Valve device

Abstract

A valve device that controls cooling water of a heat generator of a vehicle, includes: a housing having a housing main body that forms an internal space, a port, and a housing opening portion; a valve having a valve body that rotates around a rotation axis in the internal space and a shaft stem provided to the rotation axis, and that opens and closes the port according to a rotation position of the valve body; a partition portion having a partition portion main body that partitions the internal space from an outside of the housing main body, and a shaft stem insertion hole that is formed in the partition portion main body to allow one end of the shaft stem to be inserted therethrough; and a driving portion that is provided to an opposite side of the partition portion with respect to the internal space, and that rotationally drives the valve body. The valve has a restricted portion. The partition portion has an annular restriction recess that is recessed from a surface of the partition portion main body on the internal space side toward the driving portion side on a radially outer side of the shaft stem insertion hole, a restriction portion that is formed on a part of a circumferential direction of the restriction recess and that restricts rotation of the valve body by abutting against the restricted portion, and a foreign matter accumulation portion that is recessed from a bottom surface of the restriction recess toward the driving portion side.

Description

[0001] This application is a divisional application of the Chinese Patent Application No. 201980036337.9, with the title of "Valve device", filed on May 29, 2019. TECHNICAL FIELD

[0002] The present application relates to a valve device. BACKGROUND

[0003] Conventionally, a valve device having a valve body that rotates is known.

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: US Patent No. 8695542 Specification SUMMARY

[0007] For example, in the valve device described in Patent Document 1, the inner wall of the housing that forms the internal space is formed in a cylindrical shape. In addition, the outer peripheral wall of the valve body that is rotatably provided in the internal space is formed in a cylindrical shape.

[0008] Therefore, the distance between the outer peripheral wall of the valve body and the inner wall of the housing is the same in the circumferential direction, that is, it is constant in the entire range of the circumferential direction of the inner wall of the housing and the valve body. Thus, in the case where a foreign matter in the cooling water in the internal space enters the gap between the outer peripheral wall of the valve body and the inner wall of the housing, the foreign matter is difficult to be discharged even if the valve body rotates, so it is likely that the foreign matter continues to accumulate in the gap. If the foreign matter continues to accumulate in the gap, it is likely to cause poor operation of the valve body. In addition, it is likely that the load torque related to the driving of the valve body increases, and the pressure loss resistance increases.

[0009] An object of the present application is to provide a valve device capable of suppressing poor operation of a valve body.

[0010] <10-1> Non-circular housing inner wall

[0011] The first technical solution of the present application is a valve device capable of controlling the cooling water of a heat generating body of a vehicle, comprising a housing and a valve.

[0012] The housing has a housing main body having a cylindrical housing inner wall formed on the inside to form an internal space, and a port that is opened on the housing inner wall and connects the internal space with the outside of the housing main body.

[0013] The valve has a valve body capable of rotating in the internal space around a rotation axis along the axis of the housing inner wall, and a valve body opening portion formed to connect the outer peripheral wall of the valve body with the inner peripheral wall, capable of opening and closing the port according to the rotation position of the valve body.

[0014] The inner wall of the housing is formed so that the distance from the shaft differs in the circumferential direction.

[0015] Therefore, in the case where the shape of the outer peripheral wall of the valve body in a cross section perpendicular to the rotation axis of the valve body is circular, the distance of the outer peripheral wall of the valve body from the inner wall of the housing differs in the circumferential direction. That is, the distance of the outer peripheral wall of the valve body from the inner wall of the housing is not constant in the circumferential direction, and the gap between the outer peripheral wall of the valve body and the inner wall of the housing is formed to have a larger portion and a smaller portion in the circumferential direction. Thus, even in the case where a foreign matter in the cooling water in the internal space enters the gap between the outer peripheral wall of the valve body and the inner wall of the housing, the foreign matter is moved to the larger gap by the rotation of the valve body, and the foreign matter can be easily discharged from the gap. Thus, it is possible to suppress the malfunction of the valve body due to the continuous accumulation of the foreign matter in the gap between the outer peripheral wall of the valve body and the inner wall of the housing. In addition, it is possible to suppress the increase in the load torque related to the driving of the valve body and the increase in the pressure loss resistance. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above objects and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which: Figure 1 The above objects and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which:

[0017] Figure 1 is a schematic view showing a cooling system to which the valve device of the first embodiment is applied.

[0018] Figure 2 is a schematic view showing the arrangement of the valve device of the first embodiment in a vehicle.

[0019] Figure 3 is a sectional view of the valve device of the first embodiment.

[0020] Figure 4 is a sectional view of the vicinity of the sealing unit of the valve device of the first embodiment.

[0021] Figure 5 is a perspective sectional view of the valve device of the first embodiment.

[0022] Figure 6 is a VI-VI line sectional view of Figure 3

[0023] Figure 7 is a view showing the relationship between the rotation position of the valve body and the opening / closing state of the valve body opening of the valve device of the first embodiment.

[0024] Figure 8 is a view of Figure 3 from the direction of arrow VIII.

[0025] Figure 9 is a view of Figure 3 ​Fig. 1 is a perspective view showing a valve device according to a first embodiment of the present application.

[0026] Figure 10 Fig. 2 is a perspective view showing a part of the valve device according to the first embodiment of the present application.

[0027] Figure 11 Fig. 3 is a sectional view showing the vicinity of a drive section of the valve device according to the first embodiment of the present application.

[0028] Figure 12 Fig. 4 is a sectional view showing the vicinity of the drive section of the valve device according to the first embodiment of the present application.

[0029] Figure 13 Fig. 5 is a sectional view showing the vicinity of the drive section of the valve device according to the first embodiment of the present application.

[0030] Figure 14 Fig. 6 is a sectional view showing the vicinity of the drive section of the valve device according to the first embodiment of the present application.

[0031] Figure 15 Fig. 7 is a plan view showing the drive section of the valve device according to the first embodiment of the present application.

[0032] Figure 16 Fig. 8 is a sectional view showing the vicinity of the drive section of the valve device according to the first embodiment of the present application.

[0033] Figure 17 Fig. 9 is an exploded perspective view showing a part of the drive section cover and the drive section of the valve device according to the first embodiment of the present application.

[0034] Figure 18 Fig. 10 is an exploded perspective view showing a part of the drive section cover and the drive section of the valve device according to the first embodiment of the present application.

[0035] Figure 19 Fig. 11 is a view showing the drive section of the valve device according to a second embodiment of the present application.

[0036] Figure 20 Fig. 12 is a view showing a valve of the valve device according to a third embodiment of the present application.

[0037] Figure 21 Fig. 13 is a view showing a part of the valve of the valve device according to the third embodiment of the present application.

[0038] Figure 22 Fig. 14 is a perspective view showing the valve of the valve device according to the third embodiment of the present application.

[0039] Figure 23 Fig. 15 is a perspective view showing the valve of the valve device according to the third embodiment of the present application.

[0040] Figure 24 Fig. 16 is a view showing a part of the valve of the valve device according to the third embodiment of the present application.

[0041] Figure 25is a sectional view showing a part of the valve and a sealing unit of the valve device of the 3rd embodiment.

[0042] Figure 26 is a perspective view showing the valve and the sealing unit of the valve device of the 3rd embodiment.

[0043] Figure 27 is a perspective view showing a part of the valve of the valve device of the 3rd embodiment.

[0044] Figure 28 is a sectional view showing a part of the valve of the valve device of the 3rd embodiment.

[0045] Figure 29 is a view for explaining a manufacturing process of the valve of the valve device of the 3rd embodiment.

[0046] Figure 30 is a view for explaining a manufacturing process of the valve of the valve device of the 3rd embodiment.

[0047] Figure 31 is a view for explaining a manufacturing process of the valve of the valve device of the 3rd embodiment.

[0048] Figure 32 is a view for explaining a manufacturing process of the valve of the valve device of the 3rd embodiment.

[0049] Figure 33 is a sectional view showing a part of the valve and a sealing unit of the valve device of the 4th embodiment.

[0050] Figure 34 is a sectional view showing a part of the valve of the valve device of the 5th embodiment.

[0051] Figure 35 is a perspective view showing a mold device used in a manufacturing process of the valve of the valve device of the 5th embodiment.

[0052] Figure 36 is a perspective view showing a part of the mold device used in the manufacturing process of the valve of the valve device of the 5th embodiment.

[0053] Figure 37 is a perspective view showing a part of the mold device used in the manufacturing process of the valve of the valve device of the 5th embodiment.

[0054] Figure 38 is a perspective view showing a part of the mold device used in the manufacturing process of the valve of the valve device of the 5th embodiment.

[0055] Figure 39 is a view for explaining a manufacturing process of the valve of the valve device of the 5th embodiment.

[0056] Figure 40 is a view for explaining a manufacturing process of a valve of the valve device of the 5th embodiment.

[0057] Figure 41 is a view for explaining a manufacturing process of a valve of the valve device of the 5th embodiment.

[0058] Figure 42 is a sectional view showing the valve device of the 6th embodiment.

[0059] Figure 43 is a view showing the valve device of the 6th embodiment.

[0060] Figure 44 is a schematic view showing the arrangement of the valve device of the 6th embodiment in a vehicle.

[0061] Figure 45 is a view showing the valve device of the 6th embodiment.

[0062] Figure 46 is a perspective view showing the valve device of the 6th embodiment.

[0063] Figure 47 is a view showing the valve device of the 6th embodiment. Figure 42 is a view from the direction of arrow XLVII.

[0064] Figure 48 is a perspective view showing the valve device of the 6th embodiment.

[0065] Figure 49 is a view showing a part of the valve device of the 6th embodiment.

[0066] Figure 50 is a sectional view showing a pipe member, a seal unit, a gasket of the valve device of the 6th embodiment.

[0067] Figure 51 is an exploded view showing a part of the valve device of the 6th embodiment.

[0068] Figure 52 is a sectional view showing the vicinity of a partition wall through-hole of the valve device of the 6th embodiment.

[0069] Figure 53 is a sectional view showing the vicinity of a partition wall through-hole of the valve device of the 7th embodiment.

[0070] Figure 54 is a sectional view showing the vicinity of a partition wall through-hole of the valve device of the 8th embodiment.

[0071] Figure 55 is a sectional view showing the vicinity of a partition wall through-hole of the valve device of the 9th embodiment.

[0072] Figure 56 is a view showing the partition wall through-hole of the valve device of Embodiment 10.

[0073] Figure 57 is a view showing the partition wall through-hole of the valve device of Embodiment 10.

[0074] Figure 58 is a view showing the partition wall through-hole of the valve device of Embodiment 11.

[0075] Figure 59 is a sectional view showing the vicinity of the partition wall through-hole of the valve device of Embodiment 12.

[0076] Figure 60 is a view showing the partition wall through-hole of the valve device of Embodiment 13.

[0077] Figure 61 is a view showing the valve device of Embodiment 14.

[0078] Figure 62 is a view showing the valve device of Embodiment 14. Figure 61 from the arrow LXII direction.

[0079] Figure 63 is a view showing the valve device of Embodiment 14. Figure 61 from the arrow LXIII direction.

[0080] Figure 64 is a view showing the valve device of Embodiment 14. Figure 61 from the arrow LXIV direction.

[0081] Figure 65 is a view showing the valve device of Embodiment 14. Figure 61 from the arrow LXV direction.

[0082] Figure 66 is a view showing the valve device of Embodiment 14. Figure 62 from the arrow LXVI direction.

[0083] Figure 67 is a sectional view of the LXVII-LXVII line of Figure 62 .

[0084] Figure 68 is a sectional view of the LXVIII-LXVIII line of Figure 64 .

[0085] Figure 69 is a sectional view of the LXIX-LXIX line of Figure 67 .

[0086] Figure 70 is a sectional view of the LXX-LXX line of Figure 62 .

[0087] Figure 71 is a view showing the valve device of Embodiment 14.Figure 62 Sectional view of LXXI-LXXI line.

[0088] Figure 72 yes Figure 62 Sectional view of line LXXII-LXXII.

[0089] Figure 73 yes Figure 62 Sectional view of line LXXIII-LXXIII.

[0090] Figure 74 This is a perspective view of the valve device according to the 14th embodiment.

[0091] Figure 75 This is a perspective view of the valve device according to the 14th embodiment.

[0092] Figure 76 This is a perspective view of the valve device according to the 14th embodiment.

[0093] Figure 77 This is a perspective view of the valve device according to the 14th embodiment.

[0094] Figure 78 This is an exploded view showing a portion of the valve device according to the 14th embodiment.

[0095] Figure 79 yes Figure 62 A cross-sectional view of the LXXIX-LXXIX line.

[0096] Figure 80 This is a diagram showing the drive unit cover and a part of the drive unit of the valve device according to the 14th embodiment.

[0097] Figure 81 This is a diagram showing the retaining component of the valve device according to the 14th embodiment.

[0098] Figure 82 It is Figure 81 The diagram viewed from the direction of arrow LXXXII.

[0099] Figure 83 This is a plan view showing the drive section of the valve device in the 14th embodiment.

[0100] Figure 84 yes Figure 62 Sectional view along line LXXXIV-LXXXIV.

[0101] Figure 85 This is an exploded perspective view showing the drive unit cover and a part of the drive unit of the valve device according to the 14th embodiment.

[0102] Figure 86is an exploded perspective view showing a part of the drive section cover and the drive section of the valve device of the 14th embodiment.

[0103] Figure 87 is a view showing a part of the drive section cover and the drive section of the valve device of the 1st embodiment.

[0104] Figure 88 is a view showing a retaining member of the valve device of the 1st embodiment.

[0105] Figure 89 is a view showing a part of the valve device of the 14th embodiment. Figure 88 is a view as seen from the arrow direction LXXXIX.

[0106] Figure 90 is a view showing the valve of the valve device of the 14th embodiment.

[0107] Figure 91 is a view showing a part of the valve device of the 14th embodiment. Figure 90 is a view as seen from the arrow direction XCI.

[0108] Figure 92 is a view showing a part of the valve device of the 14th embodiment. Figure 90 is a view as seen from the arrow direction XCII.

[0109] Figure 93 is a view showing a part of the valve device of the 14th embodiment. Figure 90 is a view as seen from the arrow direction XCIII.

[0110] Figure 94 is a view showing a part of the valve device of the 14th embodiment. Figure 90 is a view as seen from the arrow direction XCIV.

[0111] Figure 95 is a view showing a part of the valve device of the 14th embodiment. Figure 93 is a view as seen from the arrow direction XCV.

[0112] Figure 96 is a view showing a part of the valve device of the 14th embodiment. Figure 91 is a view showing a part of the valve device of the 14th embodiment.

[0113] Figure 97 is a perspective view showing the valve of the valve device of the 14th embodiment.

[0114] Figure 98 is a perspective view showing the valve of the valve device of the 14th embodiment.

[0115] Figure 99 is a perspective view showing the valve and the seal unit of the valve device of the 14th embodiment.

[0116] Figure 100 is a view showing a part of the valve of the valve device of the 14th embodiment.

[0117] Figure 101is a perspective view showing a part of the valve of the valve device of the 14th embodiment.

[0118] Figure 102 is an exploded perspective view showing a part of the valve of the valve device of the 14th embodiment.

[0119] Figure 103 is a sectional view showing the partition wall portion of the valve device of the 14th embodiment.

[0120] Figure 104 is a perspective view showing a part of the partition wall portion of the valve device of the 14th embodiment.

[0121] Figure 105 is a sectional view showing the shaft bearing portion of the valve device of the 14th embodiment and its vicinity.

[0122] Figure 106 is a sectional view showing the shaft bearing portion of the valve device of the 14th embodiment and its vicinity.

[0123] Figure 107 is a perspective view showing the shaft bearing portion of the valve device of the 14th embodiment and its vicinity.

[0124] Figure 108 is a sectional view of CVIII-CVIII line of Figure 67 .

[0125] Figure 109 is a sectional view showing the gap between the valve body and the inner wall of the housing of the valve device of the 14th embodiment.

[0126] Figure 110 is a view showing the housing of the valve device of the 14th embodiment.

[0127] Figure 111 is a perspective view showing the housing of the valve device of the 14th embodiment.

[0128] Figure 112 is a sectional view of CXII-CXII line of Figure 64 .

[0129] Figure 113 is a view showing the relationship between the rotational position of the valve body and the opening degree of the port of the valve device of the 15th embodiment.

[0130] Figure 114 is a view showing the relationship between the rotational position of the valve body and the overlapping ratio of the valve body opening portion and the port of the valve device of the 15th embodiment.

[0131] Figure 115 is a view showing the valve device of the 16th embodiment.

[0132] Figure 116 is a view showing a valve of the valve device of Embodiment 17.

[0133] Figure 117 is a view showing a valve of the valve device of Embodiment 18.

[0134] Figure 118 is a sectional view showing a part of a partition wall portion of the valve device of Embodiment 19.

[0135] Figure 119 is a sectional view showing a partition wall portion and its vicinity of the valve device of Embodiment 20.

[0136] Figure 120 is a view showing a housing of the valve device of Embodiment 21.

[0137] Figure 121 is a perspective view showing the housing of the valve device of Embodiment 21.

[0138] Figure 122 is a view showing a relationship between a rotational position of a valve body and a proportion of coincidence with a valve body opening portion and a port of the valve device of Embodiment 22.

[0139] Figure 123 is a view showing a relationship between a rotational position of a valve body and a proportion of coincidence with a valve body opening portion and a port of the valve device of Embodiment 23.

[0140] Figure 124 is a view showing a relationship between a rotational position of a valve body and an opening degree of a port of the valve device of Embodiment 24.

[0141] Figure 125 is a view showing a relationship between a rotational position of a valve body and a proportion of coincidence with a valve body opening portion and a port of the valve device of Embodiment 24.

[0142] Figure 126 is a sectional view showing a shaft rod sealing portion and its vicinity of the valve device of Embodiment 25.

[0143] Figure 127 is a schematic view showing a cooling system to which the valve device of Embodiment 26 is applied. DETAILED DESCRIPTION

[0144] Hereinafter, valve devices of a plurality of embodiments are described based on the drawings. In addition, the same reference numerals are assigned to substantially identical constituent sites in the plurality of embodiments, and the description is omitted. Furthermore, the substantially identical constituent sites in the plurality of embodiments function to have the same or similar effects.

[0145] (Embodiment 1)

[0146] InFigure 1 The diagram shows the valve device and cooling system of the first embodiment. The valve device 10 is applied to the cooling system 9 of the vehicle 1. The vehicle 1 is equipped with an internal combustion engine (hereinafter referred to as "engine") 2 as a heat source, a cooling system 9, a heater 6, equipment 7, etc.

[0147] Cooling System

[0148] The cooling system 9 includes a valve device 10, a water pump 4, a radiator 5, and an electronic control unit (hereinafter referred to as "ECU") 8. The water pump 4 pumps coolant toward the water jacket 3 of the engine 2. The valve device 10 is located, for example, at the outlet of the water jacket 3, to adjust the flow rate of coolant supplied to the radiator 5, heater 6, and equipment 7.

[0149] Radiator 5 is a heat exchanger that exchanges heat between cooling water and air, lowering the temperature of the cooling water. Heater 6 and equipment 7 are located between valve assembly 10 and water pump 4. Here, equipment 7 includes, for example, an oil cooler, an EGR cooler, and an ATF (automatic transmission fluid) cooler.

[0150] When the coolant flows to the heater 6, heat exchange occurs between the air and the coolant inside the vehicle 1. When the coolant flows to the device 7, heat exchange occurs between the fluid (oil, EGR gas, etc.) flowing through the device 7 and the coolant. The ECU 8 controls the operation of the valve device 10, and can control the flow rate of coolant supplied to the radiator 5, heater 6, and device 7.

[0151] Valve Device

[0152] like Figure 3 As shown, the valve device 10 includes a housing 20, a valve 30, a sealing unit 35, a pipe component 50, a partition 60, a drive unit 70, and a drive unit cover 80.

[0153] The housing 20 includes a housing body 21, etc. The housing body 21 is formed, for example, of resin, and has an internal space 200 formed on its inner side. A planar mounting surface 201 is formed on the outer wall of the housing body 21. A planar tube mounting surface 202 is formed on the outer wall of the housing body 21 on the side opposite to the mounting surface 201. Here, the mounting surface 201 is formed to be substantially parallel to the tube mounting surface 202.

[0154] Here, the shell body 21 is a part of the shell 20 and refers to the part that forms the internal space 200. Therefore, although the connecting parts 231 to 233, the shell side fixing parts 251 to 256, the shell connecting parts 259, and the shell side cover fixing parts 291 to 296 described later are parts that constitute the shell 20, they are formed as parts different from the shell body 21.

[0155] In the housing main body 21, a housing opening portion 210 that connects the inside space 200 with the outside of the housing main body 21 is formed. Further, the housing main body 21 has a cylindrical housing inner wall 211 that has one end connected to the housing opening portion 210 and forms the inside space 200. Here, the housing inner wall 211 is formed so that the axis is substantially parallel to the mounting surface 201 and the pipe mounting surface 202.

[0156] The housing opening portion 210 is formed on the one end side in the longer direction of the housing main body 21, and the other end side in the longer direction is a closed surface.

[0157] The housing 20 has an inlet port 220 that is opened on the mounting surface 201 and connects the inside space 200 with the outside of the housing main body 21. The opening of the inlet port 220 on the mounting surface 201 is circular. Here, the inlet port 220 corresponds to the "port", "first port". The housing 20 has outlet ports 221, 222, 223 that are opened on the pipe mounting surface 202 and connect the inside space 200 with the outside of the housing main body 21. Here, the outlet ports 221, 222, 223 correspond to the "port", "second port".

[0158] The opening of the inlet port 220 is formed in the housing inner wall 211 at a position opposite to a position at which the openings of the outlet ports 221 to 223 are formed.

[0159] As shown in Figure 8 , the housing 20 has a relief port 224 that is opened on the pipe mounting surface 202 and connects the inside space 200 with the outside of the housing main body 21.

[0160] From the axial direction of the inlet port 220, the inlet port 220 and the relief port 224 partially overlap (see Figure 9 ).

[0161] From the end portion of the housing main body 21 on the side opposite to the housing opening portion 210, the outlet ports 221, 222, 223 are arranged in order toward the housing opening portion 210 side. The inner diameter of the outlet port 221 is larger than the inner diameters of the outlet ports 222, 223.

[0162] The valve 30 has a valve body 31, a shaft 32, and the like. The valve body 31 is formed of resin, for example. The valve body 31 is rotatably provided in the inside space 200 about a rotation axis Axr1. Here, the rotation axis Axr1 is set to be substantially parallel to the axis of the housing inner wall 211. The valve body 31 includes a first divided body 33 and a second divided body 34 that are divided by an imaginary plane Vp1 including the rotation axis Axr1 into two, and the first divided body 33 and the second divided body 34 are joined at respective joining surfaces (see Figure 6 ).

[0163] The valve body 31 includes ball valves 41, 42, and 43, a cylindrical connecting portion 44, and a cylindrical valve connecting portion 45. Here, ball valves 41, 42, and 43 correspond to "first ball valve," "second ball valve," and "third ball valve," respectively. Furthermore, the cylindrical connecting portion 44 and the cylindrical valve connecting portion 45 correspond to "cylindrical portion." Ball valves 41, 42, and 43 are each formed in a generally spherical shape, forming a valve body flow path 300 on their inner sides. The outer peripheral walls of ball valves 41, 42, and 43 are formed into spherical surfaces that bulge outwards from the radial direction of the rotation shaft Axr1. The inner peripheral walls of ball valves 41, 42, and 43 are recessed outwards from the radial direction of the rotation shaft Axr1 and are also formed into spherical surfaces.

[0164] The cylindrical connecting portion 44 is formed in a cylindrical shape to connect ball valve 41 and ball valve 42. The cylindrical valve connecting portion 45 is formed in a cylindrical shape to connect ball valve 42 and ball valve 43. Here, the cylindrical valve connecting portion 45 forms a valve body flow path 300 on its inner side. Ball valve 41, cylindrical connecting portion 44, ball valve 42, cylindrical valve connecting portion 45, and ball valve 43 are integrally formed sequentially.

[0165] Ball valves 41, 42, and 43 each have valve body openings 410, 420, and 430 that connect the internal flow path 300 of the valve body to the outside of the valve body 31. A valve space 400 is formed radially outside the cylindrical connecting portion 44 between ball valves 41 and 42. The valve space 400 communicates with the internal flow path 300 of each of the ball valves 41 and 42.

[0166] The valve body 31 is disposed in the internal space 200 such that, in the direction of the rotation axis Axr1, the valve body opening 410 corresponds to the position of the outlet port 221, the valve space 400 corresponds to the position of the inlet port 220, the valve body opening 420 corresponds to the position of the outlet port 222 and the inlet port 222, and the valve body opening 430 corresponds to the position of the outlet port 223.

[0167] The shaft 32, for example, is formed of metal in the shape of a rod and is disposed on the rotating shaft Axr1. Here, the shaft 32 is integrally disposed with the valve body 31. The shaft 32 is capable of rotating together with the valve body 31 about the rotating shaft Axr1.

[0168] Shaft 32 is made of stainless steel such as SUS430.

[0169] like Figure 3 As shown, the rotation axis Axr1 is configured to extend from the outside of the housing body 21 to the outside of the drive unit cover 80. That is, the rotation axis Axr1 is defined as a straight line that exists not only in the internal space 200 but also outside the housing body 21. The shaft 32 is provided on the rotation axis Axr1 such that it is aligned with the rotation axis Axr1.

[0170] The valve body 31 is rotatably disposed in the internal space 200 about the rotation axis Axr1. The shaft 32 is disposed on a straight line along the rotation axis Axr1. That is, the shaft 32 is disposed on at least a portion of the rotation axis Axr1.

[0171] like Figure 3 As shown, in this embodiment, the shaft 32 is configured to extend from one end face of the valve body 31 in the direction of the rotation axis Axr1, i.e., the outer side of the first outermost end face 301, through the interior of the valve body 31, i.e., the valve body internal flow path 300, to the other end face, i.e., the outer side of the second outermost end face 302.

[0172] In contrast, in other embodiments, the shaft 32 can also be configured to extend from the outer side of the first outermost end face 301 of the valve body 31 to the inner wall of the valve body 31, without protruding into the internal flow path 300 of the valve body. That is, the shaft 32 may not exist within the internal flow path 300 or the internal space 200 of the valve body; as long as it is located on a straight line along the rotation axis Axr1, its position relative to the valve body 31 is arbitrary.

[0173] The tubular component 50 is, for example, formed of resin. Figure 3 , Figure 8 As shown, the pipe component 50 includes pipe sections 511 to 517, a pipe connecting section 52, etc. Pipe sections 511 to 517 are each formed in a cylindrical shape. Pipe section 511 is positioned such that one end is located inside the outlet port 221. Pipe section 512 is positioned such that one end is located inside the outlet port 222. Pipe section 513 is positioned such that one end is located inside the outlet port 223. Pipe section 514 is positioned such that one end corresponds to the position of the overflow port 224.

[0174] Tube section 515 is provided with one end connected to tube sections 511 and 514. Tube section 516 is provided with one end connected to tube section 511. Tube section 517 is provided with one end connected to tube section 512.

[0175] The pipe connector 52 is configured to connect one end of the pipe sections 511 to 515. The pipe component 50 is fixed to the housing body 21 by the pipe connector 52 abutting against the pipe mounting surface 202. A gasket 509 is provided between the pipe connector 52 and the pipe mounting surface 202 to maintain a liquid-tight connection between the pipe component 50 and the housing body 21.

[0176] The other ends of pipes 511, 514, and 515 are connected to radiator 5 via hoses or the like. The other end of pipe 512 is connected to heater 6 via hoses or the like. The other end of pipe 513 is connected to device 7 via hoses or the like. The other end of pipe 516 is connected to a storage tank (not shown) via hoses or the like. The other end of pipe 517 is connected to a throttle (not shown) via hoses or the like.

[0177] Sealing units 35 are provided at the outlet ports 221, 222, 223, respectively. As shown, the sealing unit 35 has a valve seal 36, a sleeve 371, a spring 372, and a sealing member 373. The valve seal 36 is formed in a substantially annular shape by resin, for example, and has a seal opening portion 360 on the inner side. The valve seal 36 is provided so that one face abuts against the outer peripheral wall of the valve body 31, and can maintain liquid tightness with the outer peripheral wall of the valve body 31. Figure 4

[0178] The valve seal 36 is formed of a material in which 14% of graphite and 1% of CF (carbon fiber) are mixed in PTFE (polytetrafluoroethylene), for example. Therefore, the valve seal 36 has a lower coefficient of friction than the valve body 31 or the like, and has improved wear resistance, compression strength, and creep resistance.

[0179] The sleeve 371 is formed in a cylindrical shape by metal, for example, and holds the valve seal 36 at one end. The other end of the sleeve 371 is located inside one end of the pipe portion 511. The spring 372 is provided between one end of the sleeve 371 and one end of the pipe portion 511, and applies a force to the valve seal 36 and the sleeve 371 toward the valve body 31. The sealing member 373 is formed in a ring shape by rubber, for example, and is provided between one end of the pipe portion 511 and the outer peripheral wall of the sleeve 371, and can maintain liquid tightness between the pipe portion 511 and the sleeve 371.

[0180] The sleeve 371 is formed of stainless steel such as SUS430, for example. Therefore, the sleeve 371 has high corrosion resistance. Further, SUS430 has good press formability, so the sleeve 371 can be easily press processed.

[0181] The sealing units 35 provided at the outlet ports 222, 223 also have the same structure as the sealing unit 35 provided at the outlet port 221, so the description is omitted. The three sealing units 35 are assembled at one end of the pipe portions 511, 512, 513, respectively.

[0182] The sleeve 371, the spring 372, and the valve seal 36 of the sealing unit 35 provided at the outlet ports 222, 223 have smaller outer diameters than the sleeve 371, the spring 372, and the valve seal 36 of the sealing unit 35 provided at the outlet port 221. Here, the spring load of the spring 372 of each of the sealing units 35 provided at the outlet ports 221 to 223 is set to a load that satisfies the necessary leakage amount to compress and seal the valve seal 36. The spring constant of the spring 372 of each of the sealing units 35 provided at the outlet ports 221 to 223 differs depending on the size, because the target leakage amount and the volume differ depending on the size.

[0183] ​Spring 372 is made of stainless steel such as SUS316. Therefore, spring 372 has good elasticity and high corrosion resistance. As a result, stress corrosion cracking of spring 372 can be suppressed.

[0184] The partition wall 60 is formed, for example, of resin. The partition wall 60 is formed separately from the housing body 21. The partition wall 60 includes a partition wall body 61, etc. The partition wall body 61 is formed in a generally circular plate shape. The partition wall 60 is provided on the housing body 21 in such a way that the partition wall body 61 blocks the housing opening 210. The partition wall 60 has a shaft insertion hole 62 that extends through the center of the partition wall body 61 in the thickness direction. The valve 30 is provided such that one end of the shaft 32 is inserted through the shaft insertion hole 62. One end of the shaft 32 is supported by the partition wall body 61, and the other end is supported by the housing body 21.

[0185] The drive unit cover 80 is located on the side opposite to the internal space 200 relative to the partition wall 60, forming a drive unit space 800 between it and the partition wall 60.

[0186] The drive unit 70 is disposed in the drive unit space 800 and can drive the valve body 31 to rotate via one end of the shaft 32. The drive unit 70 includes a motor 71, a gear unit 72, etc. The gear unit 72 is connected to one end of the shaft 32. When the ECU 8 controls the power supply to the motor 71, the driving force of the motor 71 is transmitted to the shaft 32 via the gear unit 72. As a result, the valve body 31 is driven to rotate.

[0187] like Figure 5 As shown, an overflow valve 39 is provided at the overflow port 224. Under specified conditions, such as when the temperature of the cooling water reaches a specified temperature or higher, the overflow valve 39 opens, allowing communication between the internal space 200 of the overflow port 224 and the external space of the housing body 21, i.e., the inner space of the pipe section 515. When the temperature of the cooling water becomes lower than the specified temperature, the above-mentioned communication is disconnected.

[0188] like Figure 5 As shown, the relief valve 39 is positioned opposite the inlet port 220, sandwiching the valve space 400 in the middle. That is, the relief valve 39 is positioned so that it can be visually seen from the inlet port 220. More specifically, at least a portion of the relief valve 39 can be visually seen when viewed axially from the inlet port 220.

[0189] Therefore, the cooling water flowing into the internal space 200 from the inlet port 220 can directly impact the overflow valve 39, and the overflow valve 39 can be opened quickly according to the temperature of the cooling water.

[0190] like Figure 3 , Figure 6As shown, the partition wall 60 has a C-shaped limiting recess 63 that is recessed from the side of the internal space 200 of the partition wall body 61 towards the drive unit 70. A limiting portion 631 is formed between the circumferential ends of the limiting recess 63. Figure 3 , Figure 6 As shown, the valve body 31 has a first limiting protrusion 332 and a second limiting protrusion 342 extending from the end face of the drive portion 70 towards the limiting recess 63 and having their front ends located within the limiting recess 63. Therefore, the rotation of the valve body 31 is limited when the first limiting protrusion 332 abuts against the limiting portion 631 and when the second limiting protrusion 342 abuts against the limiting portion 631. That is, the valve body 31 can rotate within a range from the position where the first limiting protrusion 332 abuts against the limiting portion 631 to the position where the second limiting protrusion 342 abuts against the limiting portion 631.

[0191] The valve assembly 10 is installed on the engine 2 with its inlet port 220 connected to the outlet of the water jacket 3. Therefore, cooling water flowing into the internal space 200 from the inlet port 220 flows through the valve space 400 into the valve body flow path 300. Furthermore, by rotating the valve body 31, when the valve body openings 430, 420, and 410 overlap with the respective sealing openings 360, cooling water flows from the valve body flow path 300 through the valve body openings 430, 420, and 410 to the equipment 7, heater 6, and radiator 5, corresponding to their overlapping area.

[0192] ECU8 controls the operation of motor 71 and the rotation position of valve body 31, thereby enabling coolant to flow to device 7 for heat exchange. This cools the engine oil and EGR gas, improving fuel efficiency. Furthermore, by allowing coolant to flow to heater 6, heat exchange occurs between the air and coolant inside vehicle 1, thus warming the interior of vehicle 1.

[0193] Figure 7 This diagram illustrates the relationship between the rotational position of the valve body 31 (horizontal axis) and the opening / closing states of the valve body openings 430, 420, and 410 (vertical axis), specifically the overlapping areas of the valve body openings 430, 420, and 410 and the respective sealing openings 360. Here, the overlapping areas of the valve body openings 430, 420, and 410 and the respective sealing openings 360 correspond to the flow path area of ​​the cooling water to the device 7, heater 6, and radiator 5.

[0194] ECU8 selects a "normal mode" for use when there is a request to allow cooling water to flow to heater 6 (heater request) and a "heater cut-off mode" for use when there is no heater request, causing valve body 31 to rotate. In both the "normal mode" and "heater cut-off mode," all valve body openings 430, 420, and 410 are closed by the outer peripheral wall of valve body 31 (fully closed state: see reference).Figure 3 The region (region d) is where the flow of cooling water to equipment 7, heater 6, and radiator 5 is zero. In region d, the flow of cooling water to equipment 7, heater 6, and radiator 5 is interrupted.

[0195] In "normal mode," water is supplied to heater 6 with the highest priority. Figure 7 If valve body 31 is rotated to the right from region d, the rotational position of valve body 31 shifts to region c (adjacent to region d). In region c, valve body opening 420 begins to open, and cooling water begins to flow into heater 6. If valve body 31 is rotated further, valve body opening 420 fully opens, and the rotational position of valve body 31 shifts to region b (adjacent to region c). In region b, valve body opening 430 begins to open, and cooling water begins to flow into device 7. If valve body 31 is rotated further, valve body opening 430 fully opens, and the rotational position of valve body 31 shifts to region a (adjacent to region b). In region a, valve body opening 410 begins to open, and cooling water begins to flow into radiator 5. If valve body 31 is rotated further, valve body opening 410 fully opens (fully open state). Furthermore, when the valve body 31 is fully open (valve body opening 410), its rotational position corresponds to the rotation limit of the valve body 31. At this time, the first limiting protrusion 332 abuts against the limiting portion 631 (see reference). Figure 6 ).

[0196] In the "heater cut-off mode," water is not supplied to heater 6; water supply to device 7 is prioritized over radiator 5. Figure 7 If valve body 31 is rotated to the left from region d, it moves to region e (adjacent to region d). In region e, valve body opening 430 begins to open, and cooling water begins to flow into device 7. If valve body 31 is rotated further, valve body opening 430 fully opens, and the rotation position of valve body 31 moves to region f (adjacent to region e). In region f, only valve body opening 430 is open, and cooling water flows only into device 7. If valve body 31 is rotated further, the rotation position of valve body 31 moves to region g (adjacent to region f). In region g, valve body opening 410 begins to open, and cooling water begins to flow into radiator 5. If valve body 31 is rotated further, valve body opening 410 fully opens. ECU8 is based on... Figure 7 The “normal mode” and “heater cut-off mode” shown drive the valve body 31 to rotate, thereby achieving a balance between fuel consumption and air conditioning performance.

[0197] like Figure 2As shown, the engine 2 is equipped with an intake manifold 11, an alternator 12, a water pump 4, a compressor 13, a starter 14, a transmission 15, etc. A valve device 10 is installed in the engine 2 within a narrow space A1 between the alternator 12 and the intake manifold 11. Here, the valve device 10 is installed in the engine 2 with the drive section 70 facing downwards in the vertical direction. Therefore, steam and other air generated in the internal space 200, etc., move upwards in the vertical direction and are discharged to the storage tank via the pipe 516.

[0198] like Figure 2 As shown, a narrow space A1 for configuring the valve device 10 is formed between the alternator 12 and the intake manifold 11 of the engine 2, which are arranged horizontally. Furthermore, a compressor 13 is configured on the lower side of the narrow space A1 in the vertical direction. Therefore, the valve device 10 disposed in the narrow space A1 is surrounded by the alternator 12, the intake manifold 11, and the compressor 13.

[0199] <1-2> Shell connecting hole

[0200] like Figure 8 , Figure 9 , Figure 10 As shown, the housing 20 has fastening portions 231, 232, and 233 integrally formed with the housing body 21. The fastening portions 231, 232, and 233 protrude from their ends on the mounting surface 201 side of the housing body 21 toward the surface of the mounting surface 201. Furthermore, the housing 20 has fastening holes 241, 242, and 243 formed corresponding to the fastening portions 231, 232, and 233, respectively. Here, the fastening holes 241, 242, and 243 correspond to the "first fastening hole," "second fastening hole," and "third fastening hole," respectively.

[0201] The connecting member 240 is inserted through the connecting holes 241, 242, and 243, and is tightly connected to the engine 2. Thus, the valve device 10 is installed to the engine 2. An annular rubber port seal member 209 is provided radially outward of the inlet port 220 of the mounting surface 201. When the valve device 10 is installed to the engine 2, the port seal member 209 is compressed by the axial force of the connecting member 240. Therefore, the port seal member 209 maintains a liquid seal between the mounting surface 201 and the engine 2, preventing cooling water leakage from the inlet port 220 through the mounting surface 201 and the engine 2.

[0202] The port sealing member 209 is formed of rubber such as EPDM (ethylene propylene diene rubber), for example. Thus, the cost can be reduced. In addition, the port sealing member 209 can also be formed of H-NBR, for example. In this case, the oil resistance of the port sealing member 209 can be improved. Further, the port sealing member 209 can also be formed of FKM, for example. In this case, the water resistance and heat resistance of the port sealing member 209 can be improved. Thus, it is suitable to be employed as an engine part that is easily affected by heat.

[0203] As shown in FIG. 1, the port sealing member 209 is provided on the outer wall of the housing main body 21 of the housing 20. The port sealing member 209 is formed of rubber such as EPDM (ethylene propylene diene rubber), for example. Thus, the cost can be reduced. In addition, the port sealing member 209 can also be formed of H-NBR, for example. In this case, the oil resistance of the port sealing member 209 can be improved. Further, the port sealing member 209 can also be formed of FKM, for example. In this case, the water resistance and heat resistance of the port sealing member 209 can be improved. Thus, it is suitable to be employed as an engine part that is easily affected by heat. Figure 9 Figure 10 As shown in FIG. 1, the port sealing member 209 is provided on the outer wall of the housing main body 21 of the housing 20. The port sealing member 209 is formed of rubber such as EPDM (ethylene propylene diene rubber), for example. Thus, the cost can be reduced. In addition, the port sealing member 209 can also be formed of H-NBR, for example. In this case, the oil resistance of the port sealing member 209 can be improved. Further, the port sealing member 209 can also be formed of FKM, for example. In this case, the water resistance and heat resistance of the port sealing member 209 can be improved. Thus, it is suitable to be employed as an engine part that is easily affected by heat.

[0204] <1-2>

[0205] As described above, the present embodiment is a valve device 10 capable of controlling the cooling water of the engine 2 of the vehicle 1, and includes the housing 20, the valve 30, the partition wall portion 60, and the drive portion 70.

[0206] The housing 20 has a housing main body 21 that forms an internal space 200 on the inner side, a mounting surface 201 that is formed on the outer wall of the housing main body 21 and opposes the engine 2 in a state where it is mounted to the engine 2, an inlet port 220 that opens on the mounting surface 201 and connects the internal space 200 with the outside of the housing main body 21, a plurality of tight connection portions (231, 232, 233) that are formed integrally with the housing main body 21, and a plurality of tight connection holes (241, 242, 243) that are formed in correspondence with the plurality of tight connection portions, respectively.

[0207] The valve 30 has a valve body 31 that is rotatable within the internal space 200 about a rotation axis Axr1, a valve body internal flow path 300 that is formed on the inner side of the valve body 31 and is communicable with the inlet port 220, and a shaft 32 that is provided to the rotation axis Axr1.

[0208] The partition wall portion 60 partitions the internal space 200 from the outside of the housing main body 21.

[0209] The drive portion 70 is provided on the opposite side of the internal space 200 with respect to the partition wall portion 60, and is capable of rotationally driving the valve body 31 via the shaft 32.

[0210] The housing main body 21 is fixed to the engine 2 by a tight connection member 240 that is screwed to the engine 2 through the tight connection holes (241, 242, 243).

[0211] ​The close-contact holes include a first close-contact hole (241) formed on a radially outer side of the opening of the inlet port 220, a second close-contact hole (242) formed so as to sandwich the opening of the inlet port 220 between the first close-contact hole and the second close-contact hole, and a third close-contact hole (243) formed on the drive portion 70 side with respect to the first close-contact hole and the second close-contact hole.

[0212] The first close-contact hole (241) is formed on the drive portion 70 side with respect to the center of the inlet port 220, like the third close-contact hole (243).

[0213] Therefore, in the case where the port sealing member 209 composed of the annular elastic member is provided around the inlet port 220, when the housing main body 21 is fixed to the engine 2 with the close-contact member 240 passing through the close-contact holes 241 and 242, the port sealing member 209 can be compressed in balance. Thus, the sealability around the inlet port 220 can be effectively ensured.

[0214] Further, by fixing the close-contact 233 to the engine 2 with the close-contact member 240 passing through the close-contact hole 243, it is possible to suppress the influence of the vibration of the engine 2 on the drive portion 70.

[0215] <1-2-1>

[0216] The center Cp1 of the opening of the inlet port 220 is located on a first straight line Li1 that links the close-contact hole 241 and the close-contact hole 242.

[0217] Therefore, the port sealing member 209 can be compressed in balance even better.

[0218] In the present embodiment, the first straight line Li1 links the center of the close-contact hole 241 and the center of the close-contact hole 242. In other embodiments, the first straight line Li1 can link an arbitrary point other than the center of the close-contact hole 241 and an arbitrary point other than the center of the close-contact hole 242.

[0219] <1-2-2>

[0220] The distance between the center Cp1 of the opening of the inlet port 220 and the close-contact hole 241 is the same as the distance between the center Cp1 of the opening of the inlet port 220 and the close-contact hole 242.

[0221] The close-contact hole 241 and the close-contact hole 242 are opposed to each other while sandwiching the inlet port 220.

[0222] Therefore, the port sealing member 209 can be compressed in balance even better.

[0223] <1-2-3>

[0224] The distance of the close-coupled hole 243 from the driving portion 70 is shorter than the distance of the close-coupled hole 243 from the center Cp1 of the opening of the inlet port 220.

[0225] Therefore, it is possible to further suppress the influence of the vibration of the engine 2 on the driving portion 70.

[0226] <1-2-4>

[0227] The close-coupled hole 243 is formed so that the center is located on the driving portion 70 side with respect to an imaginary plane Vp2 that passes the center of the outlet port 223 and is orthogonal to the rotation axis Axr1 (refer to Figure 8 ). In addition, the motor 71 is disposed so that the center of gravity Cg1 is located on the close-coupled hole 243 side with respect to the rotation axis Axr1 when viewed in the axial direction of the close-coupled hole 243 (refer to Figure 8 、 Figure 9 ).

[0228] Therefore, it is possible to further suppress the influence of the vibration of the engine 2 on the driving portion 70.

[0229] <1-3>

[0230] The close-coupled hole 241 and the close-coupled hole 242 are formed so as to be point-symmetrical with respect to the center Cp1 of the opening of the inlet port 220.

[0231] The close-coupled hole 241 and the close-coupled hole 242 are on concentric circles.

[0232] Therefore, it is possible to compress the port sealing member 209 more evenly.

[0233] <1-3-1>

[0234] The close-coupled hole 241 and the close-coupled hole 242 that are point-symmetrical with respect to the center Cp1 of the opening of the inlet port 220 are formed so that a straight line that is perpendicular to the opening face of the inlet port 220 and passes the center Cp1 of the opening of the inlet port 220 passes the rotation axis Axr1.

[0235] The close-coupled hole 241 and the close-coupled hole 242 that are point-symmetrical with respect to the center Cp1 of the opening of the inlet port 220 are formed so that a straight line that is perpendicular to the opening face of the inlet port 220 and passes the center Cp1 of the opening of the inlet port 220 passes the rotation axis Axr1.

[0236] Therefore, it is possible to compress the port sealing member 209 more evenly.

[0237] <1-4>

[0238] The housing 20 has positioning portions 205, 206 formed at the mounting surface 201, enabling positioning of the housing main body 21 by engagement with other members. The positioning portions 205, 206 are formed as circular recesses from the mounting surface 201. Here, the positioning portions 205, 206 correspond to "first positioning portion" and "second positioning portion", respectively. Further, the above other members correspond to, for example, a pallet used in a manufacturing process of the valve device 10, the engine 2 as a mounting target of the valve device 10, and the like. By engaging the positioning portions 205, 206 with protrusions and the like formed in the pallet, the engine 2, positioning of the housing main body 21 with respect to the pallet, the engine 2 can be performed.

[0239] The positioning portion 205 is formed at a radially outer side of the opening of the inlet port 220. The positioning portion 206 is formed so as to sandwich the opening of the inlet port 220 between the positioning portion 205.

[0240] Therefore, the housing main body 21 can be positioned with high precision in the manufacturing process, and the machining precision can be improved. Further, at the time of mounting to the engine 2, the housing main body 21 can be positioned with high precision, and the control of the cooling water by the valve device 10 can be performed with high precision. Further, after mounting to the engine 2, the position of the housing main body 21 with respect to the engine 2 is stabilized, and the sealing performance of the port sealing member 209 can be improved.

[0241] <1-4-1>

[0242] The positioning portion 205 and the positioning portion 206 are formed so that a straight line, i.e., a second straight line Li2, linking the positioning portion 205 and the positioning portion 206 is orthogonal to a first straight line Li1 linking the close-contact hole 241 and the close-contact hole 242.

[0243] Therefore, the position of the housing main body 21 with respect to the engine 2 can be made more stable.

[0244] <1-4-2>

[0245] The center of the first straight line Li1 coincides with the center of the second straight line Li2.

[0246] Therefore, the position of the housing main body 21 with respect to the engine 2 can be made more stable.

[0247] As Figure 9As shown, the mounting surface 201 is formed on the side of the housing main body 21 opposite the tube member 50, and includes a substantially rectangular portion, three portions extending in the width direction from the rectangular portion, and a curved portion along the outer periphery of the inlet port 220. The positioning portions 205, 206 are formed on the substantially rectangular portion of the mounting surface 201. The positioning portions 205, 206 are stable while maintaining a distance. Therefore, the positioning portions 205, 206 are provided on the outer periphery of the substantially rectangular portion of the mounting surface 201.

[0248] <1-5>

[0249] The housing 20 has a mounting surface recessed portion 207 recessed from the mounting surface 201 toward the side opposite the engine 2.

[0250] Therefore, the heat of the engine 2 can be thermally insulated by the mounting surface recessed portion 207, and the influence of the heat from the engine 2 on the drive portion 70 can be suppressed.

[0251] <1-5-1>

[0252] The mounting surface recessed portion 207 is formed in a plurality, and a recessed portion inter-rib 208 is formed between the plurality of mounting surface recessed portions 207.

[0253] Therefore, the heat of the engine 2 can be thermally insulated by the mounting surface recessed portion 207, and the contact area of the mounting surface 201 with the engine 2 can be ensured.

[0254] As shown, Figure 9 The mounting surface recessed portion 207 has a rectangular recessed portion 275 having a rectangular shape, and a trapezoidal recessed portion 276 having a substantially trapezoidal shape. The recessed portion inter-rib 208 has a short direction rib 285 extending in the shorter direction of the substantially rectangular portion of the mounting surface 201, and a long direction rib 286 extending in the longer direction.

[0255] On the side of the substantially rectangular portion of the mounting surface 201 opposite the drive portion 70 with respect to the inlet port 220, two trapezoidal recessed portions 276 are formed in the shorter direction. With respect to the trapezoidal recessed portion 276, on the side opposite the inlet port 220, two rectangular recessed portions 275 are formed in the shorter direction. The short direction rib 285 is formed between the rectangular recessed portion 275 and the trapezoidal recessed portion 276. The long direction rib 286 is formed between the two trapezoidal recessed portions 276 and between the two rectangular recessed portions 275. The trapezoidal recessed portion 276 is smaller than the rectangular recessed portion 275.

[0256] On the side of the substantially rectangular portion of the mounting surface 201 opposite the drive section 70 with respect to the inlet port 220, two rectangular recesses 275 are formed in the shorter direction. On the side opposite the inlet port 220 with respect to the rectangular recess 275, two rectangular recesses 275 are formed in the shorter direction. Between the rectangular recesses 275 arranged in the longer direction, a short direction rib 285 is formed. Between the rectangular recesses 275 arranged in the shorter direction, a long direction rib 286 is formed.

[0257] The distance of the short direction rib 285 formed on the side of the substantially rectangular portion of the mounting surface 201 opposite the drive section 70 with respect to the inlet port 220 from the inlet port 220 is smaller than the distance of the short direction rib 285 formed on the side of the substantially rectangular portion of the mounting surface 201 close to the drive section 70 with respect to the inlet port 220 from the inlet port 220.

[0258] On the mounting surface 201 of the close-coupled section 231 to 233, two trapezoidal recesses 276 are formed each. Between the two trapezoidal recesses 276 in the close-coupled section 231 to 233, a short direction rib 285 is formed.

[0259] On the outer edge portion of the substantially rectangular portion of the mounting surface 201, an outer peripheral rib 287 is formed which surrounds the mounting surface recess 207.

[0260] On the outer edge portion of the mounting surface 201 of the close-coupled section 231 to 233, an outer peripheral rib 287 is formed which surrounds the mounting surface recess 207.

[0261] The mounting surface recesses 207 are formed independently of each other, and the robustness of the engine 2 against vibration can be improved by the recess-to-recess rib 208 and the outer peripheral rib 287 between the mounting surface recesses 207.

[0262] The long direction rib 286 extends in the direction of the rotation axis Axr1. That is, when viewed in the axial direction from the inlet port 220, the long direction rib 286 overlaps the rotation axis Axr1 (see FIG. 6). Figure 9 Accordingly, deformation in the direction perpendicular to the mounting surface 201 can be suppressed. If such deformation occurs, it is possible that the parts inside the valve device 10 are displaced to cause leakage of the cooling water to the inside and outside, and the function of the valve device 10 deteriorates. The present embodiment can suppress such problems.

[0263] In the present embodiment, the proportion of the size of the mounting surface recess 207 with respect to the mounting surface 201 is 5 to 9.5.

[0264] By placing the mounting surface recess 207 on the opposite side of the internal space 200 of the valve 30, the inner wall of the space of the valve 30 becomes of uniform thickness, and the spatial accuracy of the internal space 200 is improved. With good spatial accuracy of the internal space 200, the wall resistance is reduced, which can reduce pressure loss.

[0265] <1-1-5-1>

[0266] The shell body 21 is formed of polyphenylene sulfide resin (PPS) containing filler. More specifically, the shell body 21 is formed of "PPS-GF50" (PPS: 50%, glass fiber: 50%). As filler, carbon fiber, silica, talc, silicon, etc. can be used.

[0267] Therefore, it can improve the heat resistance, water absorption resistance, strength, and dimensional accuracy of the shell body 21.

[0268] The glass content relative to resin in the main body 21 of the housing can be in the range of 20% to 80%.

[0269] The valve body 31, the housing body 21, and the partition 60 are all formed of PPS.

[0270] By forming the valve body 31, housing body 21, and partition wall 60 with the same resin material, differential linear expansion can be eliminated, reducing the likelihood of jamming. If there is a differential linear expansion between the components, cooling water leakage may occur. This embodiment can suppress such problems.

[0271] By forming the valve body 31, the housing body 21, and the partition wall 60 with PPS, the strength, heat resistance, and chemical resistance of the valve body 31, the housing body 21, and the partition wall 60 can be improved.

[0272] The tube component 50 is formed, for example, from PPA (polyphthalamide). Thus, the tube component 50 can be formed by forceful demolding.

[0273] The coefficient of linear expansion of the valve body 31, housing body 21, and partition 60 formed of PPS is smaller than that of the pipe component 50 formed of PPA. Therefore, the effects of heat on strain and assembly can be reduced.

[0274] In other embodiments, the valve body 31, the housing body 21, and the partition 60 may also be formed of PPA.

[0275] <1-6>

[0276] like Figure 9 As shown, the connecting portion 233, which has a connecting hole 243 as the third connecting hole, is formed at a position adjacent to the partition wall portion 60.

[0277] Accordingly, it is possible to reduce the vibration of the driving section 70.

[0278] <1-7>

[0279] As shown in FIG. 1, the housing 20 has a plurality of close- coupled sections 231, 232, 233. The close-coupled sections 231, 232, 233 are formed in the housing main body 21, and are provided so as to be close-coupled to the engine 2. Figure 9

[0280] Accordingly, it is possible to make the thickness of the close-coupled sections 231, 232, 233 uniform. As a result, it is possible to prevent the generation of a gap, and to suppress the decrease in the strength of the resin around the shell layer at the close-coupled holes 241, 242, 243 provided in the close-coupled sections 231, 232, 233. Furthermore, in the case where the thin wall around the shell layer is broken first due to the vibration from the engine 2, it is also possible to suppress the breakage from reaching the internal space 200 due to the installation face recessed sections 207.

[0281] <1-8>

[0282] As shown in FIG. 1, the housing 20 has a plurality of close-coupled sections 231, 232, 233. The close-coupled sections 231, 232, 233 are formed in the housing main body 21, and are provided so as to be close-coupled to the engine 2. Figure 9

[0283] Accordingly, it is possible to stably position the housing main body 21.

[0284] <1-9>

[0285] As shown in FIG. 1, the housing 20 has a plurality of close-coupled sections 231, 232, 233. The close-coupled sections 231, 232, 233 are formed in the housing main body 21, and are provided so as to be close-coupled to the engine 2. Figure 9

[0286] Accordingly, with respect to the one side having only one of the three close-coupled sections, the positioning section 205 is made to have four holes, so that it is possible to ensure the balance in the left and right directions (width direction) of the housing main body 21.

[0287] <1-10>

[0288] As shown in FIG. 1, the housing 20 has a plurality of close-coupled sections 231, 232, 233. The close-coupled sections 231, 232, 233 are formed in the housing main body 21, and are provided so as to be close-coupled to the engine 2. Figure 9 ​​​As shown, the inlet port 220 is formed between the closest portion 233 of the plurality of close portions to the inlet port 220 and the positioning portion 205.

[0289] Therefore, the balance of the housing body 21 in the left-right direction (width direction) can be further ensured.

[0290] <2-1> Drive portion S / A

[0291] As shown, the partition wall portion 60 is provided in the housing opening portion 210 to partition the inside space 200 and the outside of the housing body 21, and can axially support the shaft rod 32. The drive portion cover 80 is provided on the opposite side of the inside space 200 with respect to the partition wall portion 60, and forms a drive portion space 800 between the partition wall portion 60. The drive portion 70 is provided in the drive portion space 800, and can rotationally drive the valve body 31 via the shaft rod 32. Figure 11 <2-1>

[0292]

[0293] As described above, the present embodiment is a valve device 10 capable of controlling the cooling water of the engine 2 of the vehicle 1, and includes a housing 20, a valve 30, a partition wall portion 60, a drive portion cover 80, and a drive portion 70.

[0294] The housing 20 has a housing body 21 that forms an inside space 200 on the inside, ports (220, 221, 222, 223) that connect the inside space 200 and the outside of the housing body 21, and a housing opening portion 210 that connects the inside space 200 and the outside of the housing body 21.

[0295] The valve 30 has a valve body 31 that can rotate around a rotation axis Axr1 in the inside space 200, a valve body inside flow path 300 that is formed on the inside of the valve body 31, valve body opening portions (410, 420, 430) that connect the valve body inside flow path 300 and the outside of the valve body 31, and a shaft rod 32 that is provided on the rotation axis Axr1, and can change the communication state between the valve body inside flow path 300 and the ports (220, 221, 222, 223) via the valve body opening portions (410, 420, 430) according to the rotation position of the valve body 31.

[0296] The partition wall portion 60 is provided in the housing opening portion 210 to partition the inside space 200 and the outside of the housing body 21, and can axially support the shaft rod 32.

[0297] The drive portion cover 80 is provided on the opposite side of the inside space 200 with respect to the partition wall portion 60, and forms a drive portion space 800 between the partition wall portion 60.

[0298] The drive portion 70 is provided in the drive portion space 800, and can rotationally drive the valve body 31 via the shaft rod 32. ​

[0299] In the present embodiment, no joint or the like is required between the drive section 70 and the shaft 32. Therefore, the structure in the vicinity of the drive section 70 can be made simple.

[0300] Further, by sharing the partition wall section 60 as a member that axially supports the shaft 32 and a member that houses the drive section 70, the coaxial accuracy of the drive section 70 and the valve body 31 can be improved. Further, the number of parts can be reduced.

[0301] As shown in FIG. 6, the portion of the face of the inside of the space 200 side of the partition wall section main body 61 that is inside the restriction recess 63 is located slightly more inside the space 200 side than the portion of the face of the outside of the space 200 side of the partition wall section main body 61 that is outside the restriction recess 63. Figure 11

[0302] The inner peripheral portion of the housing main body 21 that opposes the partition wall section main body 61 is stepped in shape.

[0303] The gap between the partition wall section main body 61 provided with the annular seal member 600 and the housing opening section 210 is formed in a tapered shape. By this, the annular seal member 600 can be easily disposed in the gap. If engine oil intrudes into the gap, it is possible that the annular seal member 600 swells due to the intrusion of the engine oil, breaks, and cooling water leaks. Further, if the annular seal member 600 is caught, it is possible that the annular seal member 600 breaks and cooling water leaks, and engine oil intrudes from the outside to the inside. In the present embodiment, this problem can be suppressed.

[0304] <2-1-1>

[0305] The valve device 10 further has an annular seal member 600 that is disposed between the housing opening section 210 and the partition wall section 60 and that can maintain the space between the housing opening section 210 and the partition wall section 60 as liquid-tight. The annular seal member 600 is formed in a ring shape, for example, by an elastic member such as rubber.

[0306] The inner wall of the housing opening section 210 is formed in a cylindrical shape. The partition wall section 60 has a partition wall section main body 61 that is located inside the housing opening section 210 and whose outer wall is formed in a cylindrical shape. The annular seal member 600 is disposed between the housing opening section 210 and the partition wall section main body 61. The difference between the inner diameter of the housing opening section 210 and the outer diameter of the partition wall section main body 61 is smaller than the difference between the inner diameter and the outer diameter of the annular seal member 600 in a free state. By this, the annular seal member 600 is compressed in the radial direction between the housing opening section 210 and the partition wall section main body 61.

[0307] As shown in FIG. 6, the portion of the face of the inside of the space 200 side of the partition wall section main body 61 that is inside the restriction recess 63 is located slightly more inside the space 200 side than the portion of the face of the outside of the space 200 side of the partition wall section main body 61 that is outside the restriction recess 63. Figure 11 ​As shown, in the housing opening portion 210, annular opening step surfaces 604, 605, 606 are formed. The opening step surfaces 604, 605, 606 are formed in order from the inside space 200 side in the direction of the rotation axis Axr1 toward the drive portion 70 side. The opening step surfaces 604, 606 are formed as annular planar surfaces. The opening step surface 605 is formed as a tapered surface so as to approach the rotation axis Axr1 as it goes from the drive portion 70 side toward the inside space 200 side.

[0308] In the outer edge portion of the partition wall portion main body 61, annular partition wall step surfaces 611, 612 are formed. The partition wall step surface 611 is formed as an annular planar surface in opposition to the opening step surface 604. The partition wall step surface 612 is formed as an annular planar surface in opposition to the opening step surfaces 605, 606.

[0309] The annular seal member 600 is provided between the opening step surface 604 and the partition wall step surface 611.

[0310] <2-2>

[0311] The annular seal member 600 is compressed in the radial direction between the housing opening portion 210 and the partition wall portion 60.

[0312] Therefore, by the annular seal member 600, the shaft stem 32 is centered, and the positional accuracy of the valve body 31 and the detection accuracy of the rotation angle sensor 86 described later can be improved.

[0313] The center of the inner peripheral wall of the annular seal member 600 coincides with the center of the outer peripheral wall. Therefore, the shaft stem 32 can be effectively centered by the annular seal member 600.

[0314] Further, the force acting in the axial direction of the fixing member 830 described later can be reduced, and the number of fixing members 830 can be reduced.

[0315] In the case where water pressure acts, the force acts in the direction in which the partition wall portion main body 61 is lifted, and the drive portion 70 is lifted. As a result, the fixing member 830 is lifted. However, in the present embodiment, by the annular seal, the annular seal member 600 is in a stretched state, and the partition wall portion main body 61 is difficult to move under the sliding resistance. Therefore, the force acting in the axial direction of the fixing member 830 can be reduced.

[0316] <2-2-1>

[0317] An axial gap SAx is formed between the annular seal member 600 and the housing main body 21 in the axial direction.

[0318] Therefore, the annular seal member 600 can be more effectively compressed in the radial direction between the housing opening portion 210 and the partition wall portion 60.

[0319] If the axial gap SAx is small, the annular seal member 600 becomes elongated. In this case, a force is generated in the axial direction of the annular seal member 600. In order to prevent this, it is necessary to generate a force only in the radial direction of the annular seal member 600. As this relationship, in the present embodiment, it is set that, in a cross section in a plane including the shaft of the annular seal member 600, the cross-sectional area of the annular seal member 600 / cross-sectional area of the axial gap SAx < 1.

[0320] <2-3>

[0321] The valve device 10 further has a fixing member 830 capable of fixing the housing main body 21 and the drive portion cover 80 in a state in which the partition wall portion 60 is interposed between the housing main body 21 and the drive portion cover 80.

[0322] Therefore, the position of the partition wall portion 60 is stabilized, and the shaft accuracy of the valve body 31 can be improved.

[0323] In the present embodiment, the end portion of the shaft rod 32 on the side opposite to the drive portion 70 is a sliding bearing (refer to Figure 3 ). If the shaft accuracy deteriorates, the sliding resistance increases. On the other hand, the valve seal 36 is urged toward the valve body 31 by the spring 372, and in the case in which the shaft accuracy is good, the force by which the valve seal 36 is urged by the spring 372 can be made small. Furthermore, if the shaft is displaced, there is a possibility that cooling water leaks between the valve body 31 and the valve seal 36, the heating and cooling are slowed, and the fuel consumption deteriorates, but if the shaft accuracy is good, such problems can be prevented.

[0324] Furthermore, the partition wall portion 60 and the drive portion cover 80 can be assembled to the housing main body 21 at one time, and the assembly can be simplified. Furthermore, the number of fixing members can be reduced.

[0325] The fixing member 830 is, for example, a screw that is screwed into a cover fastening hole 831 formed in the drive portion cover 80 and a fastening hole of the housing main body 21. Thus, the drive portion cover 80 is fixed to the housing main body 21 in a state in which the partition wall portion 60 is interposed between the housing main body 21 and the drive portion cover 80. In addition, a plurality of cover fastening holes are formed in the drive portion cover 80, and the fixing member 830 is inserted therethrough. In addition, a cover seal member 809 made of rubber is provided between the outer edge portion of the drive portion cover 80 and the partition wall portion 60. Thus, the drive portion space 800 is maintained to be airtight and liquid tight.

[0326] <2-4>

[0327] As Figure 11As shown, the partition wall 60 has a shaft insertion hole 62 through which one end of the shaft 32 can be inserted. The valve device 10 has a metal ring 601, which is inserted into the partition wall 60 at the shaft insertion hole 62. The metal ring 601 is formed into a ring shape from metal and is coaxially arranged with the shaft insertion hole 62. The valve device 10 has a bearing portion 602 provided inside the metal ring 601 to support one end of the shaft 32. The bearing portion 602 is, for example, a ball bearing, and is pressed into the inside of the metal ring 601.

[0328] Therefore, it is possible to suppress the situation where the bearing portion 602 cannot be maintained due to the difference in linear expansion between the resin (partition wall 60) and the metal (bearing portion 602) and resin deterioration, and thus maintain the shaft support accuracy of the shaft 32.

[0329] <2-5>

[0330] like Figure 12 As shown, the partition wall portion 60 has a partition wall recess 64 that is recessed radially outward from the drive cover 80 side of the metal ring 601 from the surface 609 on the drive cover 80 side to the opposite side of the drive cover 80. Here, the surface 609 is a planar portion formed on the drive cover 80 side of the partition wall portion 60 on the same plane as the end face of the drive cover 80 side of the metal ring 601.

[0331] Figure 11 It is a diagram showing a cross-section of the plane containing the rotation axis Axr1. Figure 12 It is a cross-sectional view showing "the plane containing the rotation axis Axr1 and perpendicular to the axis Axm1 of the motor 71". Figure 13 It is a cross-sectional view showing "the plane containing the shaft Axm1 of the motor 71 and parallel to the rotation shaft Axr1". Figure 14 It is a cross-sectional view showing "the plane containing the rotation axis Axr1 and parallel to the axis Axm1 of the motor 71".

[0332] Therefore, it is possible to suppress shrinkage or warping during the integral molding of the partition wall portion 60 and deformation caused by the pressing of the bearing portion 602. As a result, the dimensional accuracy of the outer peripheral portion of the partition wall portion 60 can be improved, and the axial accuracy of the valve body 31 can be improved.

[0333] <2-6>

[0334] like Figure 12 As shown, the drive unit 70 has a motor 71 capable of rotating the shaft 32.

[0335] <2-7>

[0336] like Figure 12 , Figure 13 As shown, the valve device 10 also includes an elastic member 74 disposed between the motor 71 and the partition 60 in a compressed state. The elastic member 74 is formed, for example, of rubber.

[0337] Therefore, by utilizing the damping effect of the elastic component 74, the vibration acting on the motor 71 can be attenuated, poor contact can be suppressed, and the working condition of the motor 71 can be maintained well.

[0338] Vibration of the motor 71 may cause sliding resistance due to movement of the partition 60, resulting in poor fuel economy. Furthermore, vibration of the motor 71 may cause output deviation of the rotation angle sensor 86 (described later), also leading to poor fuel economy. In this embodiment, the vibration of the motor 71 is suppressed by the elastic member 74, thereby preventing the aforementioned problems from occurring.

[0339] Furthermore, it simplifies the assembly of motor 71 and reduces the number of parts.

[0340] like Figure 12 As shown, the elastic member 74 is provided between the partition body 61 and the motor 71, and applies force to the partition body 61 toward the internal space 200.

[0341] Therefore, the elastic member 74 can suppress the situation where the partition body 61 floats due to the water pressure of the cooling water on the internal space 200 side. As a result, it is possible to prevent cooling water leakage and prevent overheating of the vehicle 1 caused by such leakage.

[0342] <2-8>

[0343] like Figure 14 , Figure 15 As shown, the motor 71 is configured such that shaft Axm1 is orthogonal to shaft Axs1 of shaft 32. More precisely, shafts Axm1 and Axs1 are orthogonal in a torsional relationship.

[0344] Therefore, it can improve the freedom of mounting the tube component 50.

[0345] Furthermore, the volume of the housing body 21 in the width direction can be reduced, allowing the valve device 10 to be mounted in a confined space.

[0346] In addition, it can keep the electrical components around the motor 71 away from the cooling water (internal space 200), reducing the risk of short circuits caused by water getting wet.

[0347] Furthermore, by keeping the motor 71 away from the cooling water (internal space 200), thermal damage to the motor 71 can be suppressed.

[0348] <2-9>

[0349] like Figure 15 , Figure 16As shown, the motor 71 has a motor main body 710, a motor shaft 711, a worm gear 712, motor side terminals 713, and the like. The motor main body 710 is formed in a substantially cylindrical shape, and has a stator, a coil, and a rotor, which are not shown, in the inside. The motor shaft 711 is provided integrally with the rotor at a rotation axis of the rotor, and protrudes from an axial end of the motor main body 710. A driving force of the motor 71 is output from the motor shaft 711. Here, an axis Axm1 of the motor 71 coincides with an axis of the motor shaft 711. The motor 71 is provided so that the axis Axm1 is parallel to a face 808 of the driving section cover 80 facing the partition wall section 60 (see FIG. 8). Figure 16 ).

[0350] The worm gear 712 is provided at one end of the motor shaft 711, and is rotatable integrally with the motor shaft 711. The motor side terminals 713 are formed in a long plate shape, for example, from metal. The motor side terminals 713 protrude from an end of the motor main body 710 opposite the worm gear 712, and are provided two and sandwich the axis Axm1 of the motor 71 therebetween. Here, the two motor side terminals 713 are provided in a manner that their faces are parallel to each other. End portions of the motor side terminals 713 inside the motor main body 710 are electrically connected to the coil.

[0351] As shown in FIGS. 8 and 9, Figure 16 , Figure 17 the valve device 10 further has power supply terminals 85. The power supply terminals 85 are formed in a flat plate shape of a U letter, for example, from metal, and are insert-molded to the driving section cover 80 in a manner that end portions of the terminals 85 on a terminal opening 851 side face the partition wall section 60. The power supply terminals 85 are provided two and sandwich the axis Axm1 of the motor 71 therebetween. Here, the two power supply terminals 85 are provided on the same plane. The two motor side terminals 713 of the motor 71 are respectively fitted to the terminal openings 851 of the two power supply terminals 85, and are electrically connected to the power supply terminals 85.

[0352] As shown in FIGS. 8 and 9, Figure 12 the driving section cover 80 has a connector section 84. The connector section 84 has terminals 841 on the inside. The terminals 841 are electrically connected to the power supply terminals 85. In the connector section 84, a wiring, which is not shown, is connected. Thus, power is supplied from a battery of the vehicle 1 via the wiring, the terminals 841, the power supply terminals 85, and the motor side terminals 713.

[0353] Further, on the rotation axis Axr1 of the driving section cover 80, a rotation angle sensor 86 is provided. The rotation angle sensor 86 is electrically connected to the ECU 8 via the terminals 841 and the wiring. The rotation angle sensor 86 outputs a signal corresponding to a rotation angle of the shaft 32 to the ECU 8. Thus, the ECU 8 can detect a rotation position of the valve body 31, and can control the operation of the motor 71 in accordance with the rotation position of the valve body 31.

[0354] As described above, the valve device 10 is provided with the U-shaped power supply terminal 85 which is provided to the drive section cover 80 with the end portion of the opening (terminal opening 851) side directed toward the partition wall portion 60 side, and through which the current supplied to the motor 71 flows. The motor 71 has the motor side terminal 713 connected to the opening (terminal opening 851) of the power supply terminal 85 at the end portion in the axial direction, and is disposed with the shaft Axm1 parallel to the face 808 of the drive section cover 80 directed toward the partition wall portion 60 side.

[0355] Therefore, the motor 71 can be easily assembled to the drive section cover 80 from one direction. Further, the number of parts can be reduced.

[0356] <2-10>

[0357] As shown in Figure 15 , the gear section 72 has the 1st gear 721, the 2nd gear 722, and the 3rd gear 723. The 1st gear 721 is disposed so as to mesh with the worm wheel 712 of the motor 71. The 2nd gear 722 is larger in outer diameter than the 1st gear 721, and is disposed so as to mesh with the 1st gear 721. The 3rd gear 723 is larger in outer diameter than the 2nd gear 722, and is disposed at one end of the shaft rod 32 so as to mesh with the 2nd gear 722. The 3rd gear 723 is disposed coaxially with the shaft rod 32, and can rotate integrally with the shaft rod 32.

[0358] The 1st gear 721, the 2nd gear 722, and the 3rd gear 723 are disposed so that the shaft is parallel to the shaft Axs1 of the shaft rod 32, i.e., so that the shaft is orthogonal to the shaft Axm1 of the motor 71. The driving force of the motor 71 is transmitted to the shaft rod 32 via the worm wheel 712, the 1st gear 721, the 2nd gear 722, and the 3rd gear 723.

[0359] As shown in Figure 12 , Figure 18 , the valve device 10 is further provided with a holding member 73. The holding member 73 has a snap fit portion 731 which can be snap fit-coupled to the drive section cover 80. The holding member 73 is snap fit-coupled to the drive section cover 80 so as to hold the motor 71, the 1st gear 721, and the 2nd gear 722 of the gear section 72 between the drive section cover 80. Here, the elastic member 74 is disposed in a compressed state between the motor main body 710 and the holding member 73.

[0360] As described above, the drive section 70 has the gear section 72 which can transmit the driving force of the motor 71 to the shaft rod 32. Further, the valve device 10 is further provided with the holding member 73 which has the snap fit portion 731 which can be snap fit-coupled to the drive section cover 80, and holds the motor 71 and the gear section 72 between the drive section cover 80.

[0361] Therefore, the motor 71 and gear 72 can be assembled toward the partition wall 60 while still held in the drive cover 80. Furthermore, the number of parts can be reduced.

[0362] <6-7>

[0363] like Figure 3 As shown, the partition wall portion 60 has a partition wall through hole 65 that extends outward from the shaft insertion hole 62 and opens on the outer wall of the partition wall portion body 61. In addition, the housing 20 has a housing through hole 270 that extends outward from the inner wall of the housing opening portion 210 and opens on the outer wall of the housing body 21, and is able to communicate with the partition wall through hole 65.

[0364] Therefore, cooling water flowing from the internal space 200 through the shaft insertion hole 62 toward the drive unit 70 can flow into the partition wall through hole 65. This suppresses the flow of cooling water from the internal space 200 toward the drive unit 70. Furthermore, the cooling water flowing into the partition wall through hole 65 is discharged to the outside through the housing through hole 270.

[0365] In this embodiment, the housing through hole 270 is open on the mounting surface 201. That is, when the valve device 10 is installed on the engine 2, the housing through hole 270 is covered by the engine 2.

[0366] Therefore, cooling water leaking from the inside of the valve device 10 to the outside through the housing through-hole 270 can be captured at the mounting surface 201. As a result, significant cooling water leakage can be suppressed.

[0367] <6-22>

[0368] The housing through hole 270 is open on the mounting surface 201 side.

[0369] Therefore, it can prevent external water from entering the valve device 10 through the housing through hole 270 and the partition through hole 65.

[0370] Metal components such as power supply terminals 85 located in the drive section space 800 are post-plated onto portions of the plated components after pressure punching. This prevents corrosion of the metal components and reduces poor conductivity, even if cooling water enters the drive section space 800.

[0371] In the valve device 10 used to control the cooling water of the engine 2 as in this embodiment, the valve is affected by the heat of the cooling water. Therefore, when the thickness of the valve body 31 is uneven, the expansion rate varies depending on the thickness, and the valve body 31 as a whole may deform. Particularly in this embodiment, since the inlet port 220 where the cooling water flows in is opposite a portion of the inner peripheral wall of the valve body 31, the inner peripheral wall of the valve body 31 is easily affected by heat.

[0372] <3-27>

[0373] Therefore, as Figure 3 As shown, the valve body 31 is formed such that at least the portion of its inner peripheral wall opposite to the inlet port 220 through which cooling water flows in, namely the opposing portion 310, is recessed outward. More specifically, the valve body 31 is formed such that at least the portion of its inner peripheral wall opposite to the inlet port 220 through which cooling water flows in, namely the opposing portion 310, is recessed outward.

[0374] In this way, if at least the opposing portion 310 in the inner peripheral wall of the valve body 31 is recessed to a near-uniform thickness, the overall expansion rate of the valve body 31 will be near-uniform, thus preventing deformation of the valve body 31.

[0375] <3-28>

[0376] like Figure 3 As shown, the valve seal 36 abuts against at least the portion of the outer peripheral wall of the valve body 31 corresponding to the opposing portion 310. More specifically, the valve seal 36 abuts against at least the portion of the outer peripheral wall of the valve body 31 opposite to the opposing portion 310.

[0377] If the valve body 31 is deformed, the sealing performance of the valve seal 36 will deteriorate, and the heating performance will decrease. However, in this embodiment, the above structure can prevent the deformation of the valve body 31, especially the part corresponding to the opposing part 310, so the sealing performance of the valve seal 36 can be ensured and the heating performance can be improved.

[0378] <4-6>

[0379] The housing 20 has multiple ports (221-223). With the housing body 21 installed on the engine 2, the port 222 of the vehicle 1 connected to the heater 6 is formed among the multiple ports such that it is not located at the uppermost point in the vertical direction (see reference). Figure 8 ).

[0380] Therefore, it can suppress the airflow in the cooling water to the heater 6 and suppress abnormal noises in the vehicle 1's interior.

[0381] (Second Implementation)

[0382] A portion of the valve device of the second embodiment is shown in Figure 19

[0383] <2-11>

[0384] As shown in Figure 19 , the motor 71 is disposed in the driving portion space 800 in a manner that the motor shaft 711 is perpendicular to the mounting surface 201 and the worm wheel 712 faces the opposite side to the mounting surface 201.

[0385] As described above, the motor 71 has the motor shaft 711 that outputs a driving force and the worm wheel 712 provided at the front end of the motor shaft 711, and is disposed in a manner that the motor shaft 711 is perpendicular to the mounting surface 201 and the worm wheel 712 faces the opposite side to the mounting surface 201.

[0386] Therefore, it is possible to reduce the gear height and the volume of the driving portion 70.

[0387] Further, since it is possible to arrange the motor main body 710 of the motor 71 near the engine 2 (mounting surface 201), it is possible to improve the vibration resistance of the motor 71, and the vibration acting on the motor 71 is reduced, and it is possible to improve the robustness against wire breakage.

[0388] Further, by arranging the motor 71 and the gear portion 72 in the driving portion space 800 as shown in Figure 19 , it is possible to make the width of the driving portion 70 and the driving portion cover 80 in the direction Dv1 perpendicular to the mounting surface 201 smaller than the width in the direction Dp1 parallel to the mounting surface 201.

[0389] More specifically, as shown in Figure 19 , the third gear 723 is arranged radially outward of the motor main body 710, and the first gear 721 and the second gear 722 are arranged radially outward of the worm wheel 712. In this way, the third gear 723 having a larger outer diameter is arranged near the mounting surface 201, and the first gear 721 and the second gear 722 are arranged in the free space radially outward of the worm wheel 712, and thus it is possible to reduce the volume of the driving portion 70 and the driving portion cover 80.

[0390] (Third Embodiment)

[0391] A portion of the valve device of the third embodiment is shown in Figure 20

[0392] <3-1> Spherical Valve Body

[0393] In the third embodiment, the arrangement of the ball valves 41, 42, 43, the cylindrical connecting portion 44, and the cylindrical valve connecting portion 45 of the valve body 31 at the shaft 32 is different from that of the first embodiment. As shown in​​Figure 20 As shown, the ball valve 41, the cylindrical connection portion 44, the ball valve 42, the cylindrical valve connection portion 45, and the ball valve 43 are arranged in order from the drive portion 70 side in the direction of the rotation axis Axr1 to the opposite side of the drive portion 70.

[0394] In the present embodiment, the outlet ports 221, 222, 223 are arranged in order from the drive portion 70 side in the direction of the rotation axis Axr1 to the opposite side of the drive portion 70 in the housing main body 21. The ball valves 41, 42, 43 are each capable of opening and closing the outlet ports 221, 222, 223.

[0395] At least a portion of the outer peripheral wall of the ball valves 41, 42, 43 of the valve body 31 is formed in a spherical shape, and at least a portion of the inner peripheral wall is formed to be recessed to the outside.

[0396] <3-1>

[0397] As described above, the present embodiment is a valve device 10 capable of controlling the cooling water of the engine 2 of the vehicle 1, and includes the housing 20, the valve 30, and the valve seal 36.

[0398] The housing 20 has ports (220, 221, 222, 223) that connect the inside space 200 with the outside.

[0399] The valve 30 has the valve body 31 that is rotatable in the inside space 200 about the rotation axis Axr1, the valve body inside flow path 300 that is formed on the inside of the valve body 31, the valve body opening portions (410, 420, 430) that connect the valve body inside flow path 300 with the outside of the valve body 31, and the shaft 32 that is provided to the rotation axis Axr1, and is capable of changing the communication state between the valve body inside flow path 300 and the ports (220, 221, 222, 223) via the valve body opening portions (410, 420, 430) according to the rotation position of the valve body 31.

[0400] The valve seal 36 is formed in a ring shape, is provided at a position corresponding to the ports (220, 221, 222, 223) so as to be capable of abutting against the outer peripheral wall of the valve body 31, has the seal opening portion 360 that is formed on the inside so as to be capable of communicating with the valve body opening portions (410, 420, 430) according to the rotation position of the valve body 31, and is capable of maintaining liquid tightness with the outer peripheral wall of the valve body 31.

[0401] At least a portion of the outer peripheral wall of the valve body 31 is formed in a spherical shape, and at least a portion of the inner peripheral wall is formed to be recessed to the outside.

[0402] Therefore, the molding precision of the spherical surface of the outer peripheral wall of the valve body 31 can be improved. Thus, the leakage of the cooling water at the outer peripheral wall of the valve body 31 can be suppressed.

[0403] Further, the flow path area of the valve body internal flow path 300 can be increased, and the water passage resistance can be reduced.

[0404] <3-2>

[0405] At least a portion of the inner peripheral wall of the ball valves 41, 42, 43 of the valve body 31 is formed in a spherical shape.

[0406] Therefore, at least a portion of the valve body 31 can be made to have a uniform thickness. Thus, the accuracy of the spherical surface of the outer peripheral wall of the valve body 31 can be further improved, and the flow path area of the valve body internal flow path 300 can be further increased.

[0407] <3-3>

[0408] The distance between the inner peripheral wall and the outer peripheral wall of the ball valves 41, 42, 43 of the valve body 31 is the same in at least a portion of the range in the rotation axis Axr1 direction and the circumferential direction. That is, the valve body 31 is formed so as to have a uniform thickness (uniform thickness) in at least the above range.

[0409] Therefore, at least a portion of the valve body 31 can be made to have a uniform thickness. Thus, the accuracy of the spherical surface of the outer peripheral wall of the valve body 31 can be further improved, and the flow path area of the valve body internal flow path 300 can be further increased.

[0410] <3-4>

[0411] The distance between the inner peripheral wall and the outer peripheral wall of the ball valves 41, 42, 43 of the valve body 31 is the same in at least a range corresponding to the seal opening portion 360 in the rotation axis Axr1 direction and the circumferential direction.

[0412] Therefore, the valve body 31 can be made to have a uniform thickness in the above range. Thus, the accuracy of the spherical surface of the outer peripheral wall of the valve body 31 can be further improved, and the sealing performance of the valve seal 36 can be improved.

[0413] <3-4-1>

[0414] The distance between the inner peripheral wall and the outer peripheral wall of the ball valves 41, 42, 43 of the valve body 31 is the same in at least a range corresponding to the seal opening portion 360 in the rotation axis Axr1 direction and the circumferential direction when the valve body 31 is in the fully closed state in which the entire seal opening portion 360 is blocked by the outer peripheral wall of the valve body 31.

[0415] The "range corresponding to the seal opening portion 360" refers to a range that overlaps with the projection of the seal opening portion 360 in the axial direction of the valve seal 36 when the seal opening portion 360 is projected in the axial direction of the valve seal 36.

[0416] Therefore, the sealing performance of the valve seal 36 in the fully closed state can be further improved.

[0417] <3-5>

[0418] The shaft 32 is formed integrally with the valve body 31 by insert molding.

[0419] Therefore, the controllability of the valve body 31 can be improved.

[0420] Further, the assembly work of the shaft 32 can be reduced.

[0421] <3-6>

[0422] The valve body 31 has a first divided body 33 and a second divided body 34 that are divided into two by an imaginary plane Vp1 including the rotation axis Axr1, and the first divided body 33 and the second divided body 34 are joined at respective joining surfaces 331, 341.

[0423] Therefore, the valve body 31 can be manufactured with good accuracy by die slide injection (DSI) described later.

[0424] <3-7>

[0425] As shown in Figure 20 , Figure 23 , the first divided body 33 has a first limit protrusion 332 that extends from the side of the partition wall portion 60 toward the side of the limit recess 63, with a front end portion located in the limit recess 63 (for the limit recess 63, refer to Figure 3 , Figure 6 ). The second divided body 34 has a second limit protrusion 342 that extends from the side of the partition wall portion 60 toward the side of the limit recess 63, with a front end portion located in the limit recess 63.

[0426] Therefore, the first limit protrusion 332 and the second limit protrusion 342 abut against the limit portion 631 of the limit recess 63, so that the rotation of the valve body 31 can be limited. Here, since the first limit protrusion 332 and the second limit protrusion 342 are formed in the first divided body 33 and the second divided body 34, respectively, when the first limit protrusion 332 and the second limit protrusion 342 abut against the limit portion 631 of the limit recess 63, the first divided body 33 and the second divided body 34 can be inhibited from being separated (peeled) at the joining surfaces 331, 341.

[0427] As shown in Figure 23 , 25 and the like, the first limit protrusion 332 and the second limit protrusion 342 are located radially outward with respect to the center in the radial direction of the first outermost end face 301. Thereby, the size in the circumferential direction of the first limit protrusion 332 and the second limit protrusion 342 can be increased, so that the strength of the first limit protrusion 332 and the second limit protrusion 342 can be increased.

[0428] As shown in Figure 6As shown, limiting surfaces 635 and 636 are formed on the circumferential end face of the limiting recess 63 of the limiting portion 631. A protruding limiting surface 333 capable of abutting against the limiting surface 635 is formed on the circumferential end face of the valve body 31 of the first limiting protrusion 332. A protruding limiting surface 343 capable of abutting against the limiting surface 636 is formed on the circumferential end face of the valve body 31 of the second limiting protrusion 342. Rotation of the valve body 31 is limited when the protruding limiting surface 333 abuts against the limiting surface 635 or when the protruding limiting surface 343 abuts against the limiting surface 636.

[0429] like Figure 23 , Figure 25 As shown, the corners of the first limiting protrusion 332 and the second limiting protrusion 342 opposite to the first outermost end face 301 are chamfered so that they are inclined relative to the first outermost end face 301. Therefore, even if there are foreign objects such as sand near the first limiting protrusion 332 and the second limiting protrusion 342 of the limiting recess 63, it is possible to prevent foreign objects from biting into the corners of the first limiting protrusion 332 and the second limiting protrusion 342 and the limiting recess 63.

[0430] <3-8>

[0431] The first limiting protrusion 332 extends along the mating surface 331 toward the limiting recess 63. The second limiting protrusion 342 abuts against the first limiting protrusion 332 and extends along the mating surface 331 toward the limiting recess 63.

[0432] Therefore, when the first limiting protrusion 332 and the second limiting protrusion 342 abut against the limiting portion 631 of the limiting recess 63, the separation of the first segment 33 and the second segment 34 at the joint surfaces 331 and 341 can be more effectively suppressed.

[0433] <3-9>

[0434] like Figure 20 , Figure 21 , Figure 22 As shown, the valve body 31 has a valve body opening rib 411 connecting the inner edge end of the valve body opening 410. The valve body 31 also has valve body opening ribs 421 and 422 connecting the inner edge end of the valve body opening 420. Furthermore, the valve body 31 has valve body opening ribs 431 and 432 connecting the inner edge end of the valve body opening 430. Therefore, the strength of the valve body openings 410, 420, and 430 can be improved.

[0435] Valve body opening ribs 411, 421, and 431 are formed on an imaginary plane containing the shaft Axs1 (rotation shaft Axr1) of the shaft 32, i.e., on an imaginary plane Vp1 containing the mating surfaces 331 and 341. In other words, valve body opening ribs 411, 421, and 431 are formed by sandwiching mating surfaces 331 and 341. Valve body opening ribs 422 and 432 are formed on an imaginary plane containing the shaft Axs1 (rotation shaft Axr1) of the shaft 32 and orthogonal to the imaginary plane Vp1.

[0436] like Figure 24 , Figure 25 As shown, the valve body opening rib 411 is formed at a position that moves radially inward from the imaginary spherical surface Vs1 along the outer peripheral wall of the ball valve 41 of the valve body 31.

[0437] The imaginary sphere Vs1 is an imaginary sphere that includes the outer peripheral wall of the ball valve 41.

[0438] Therefore, when the valve body 31 rotates, it can prevent the valve seal 36 from getting stuck on the valve body opening rib 411 and increasing the sliding resistance.

[0439] <3-9-1>

[0440] like Figure 24 , Figure 25 As shown, the valve body opening rib 411 is formed in an arc shape, spaced at a predetermined distance from the imaginary spherical surface Vs1. Furthermore, the valve body opening ribs 421, 422 and 431, 432 are also formed in an arc shape, spaced at a predetermined distance from the imaginary spherical surface along the outer peripheral wall of the ball valves 42 and 43.

[0441] Therefore, it can suppress the increase of sliding resistance when the valve body 31 rotates, and can increase the flow area inside the valve body opening ribs 411, 421, 422, 431, and 432.

[0442] like Figure 24 As shown, the valve body opening rib 411 is formed into an arc-shaped flat plate. The radially outer portion of the valve body opening rib 411, i.e., the outer edge 401 of the rib, is at a constant distance from the imaginary spherical surface Vs1. The radially inner portion of the valve body opening rib 411, i.e., the inner edge 402 of the rib, is at a constant distance from the imaginary spherical surface Vs1. One end of the valve body opening rib 411, i.e., the rib end 403, is connected to the portion opposite to the cylindrical connecting portion 44 in the inner edge end of the valve body opening portion 410. The other end of the valve body opening rib 411, i.e., the rib end 404, is connected to the portion on the side of the cylindrical connecting portion 44 in the inner edge end of the valve body opening portion 410.

[0443] <3-11>

[0444] like Figure 26As shown, when all the valve seal openings 360 of the valve seal 36 are completely blocked by the outer peripheral wall of the valve body 31, the mating surfaces 331 and 341 are in a position where they have left the valve seal 36.

[0445] Therefore, by forming a step difference on the outer peripheral wall in the mating surfaces 331 and 341 of the valve body 31, when the valve body 31 is in the fully closed state, leakage of cooling water between the valve seal 36 and the outer peripheral wall of the valve body 31 can be suppressed.

[0446] <3-12>

[0447] like Figure 20 As shown, the valve body 31 has a specific shape portion 441 at the cylindrical connecting portion 44. This specific shape portion 441 is formed on the mating surfaces 331 and 341 and has an outer wall with a curvature different from that of the outer peripheral wall of the cylindrical connecting portion 44. The valve body 31 also has a specific shape portion 451 at the cylindrical valve connecting portion 45. This specific shape portion 451 is formed on the mating surfaces 331 and 341 and has an outer wall with a curvature different from that of the outer peripheral wall of the cylindrical valve connecting portion 45.

[0448] Therefore, when the valve body 31 rotates, the specific shaped portions 441 and 451 do not slide with the valve seal 36, which can suppress malfunction of the valve body 31 and suppress wear of the valve seal 36.

[0449] <3-12-1>

[0450] The specific shape portions 441 and 451 are respectively formed such that the outer wall protrudes outward from the outer peripheral wall of the cylindrical connecting portion 44 and the cylindrical valve connecting portion 45.

[0451] <3-12-2>

[0452] The specific shape portions 441 and 451 may also be formed such that the outer wall is recessed inward from the outer peripheral wall of the cylindrical connecting portion 44 and the cylindrical valve connecting portion 45.

[0453] <3-12-3>

[0454] Alternatively, the outer walls of the specific shaped parts 441 and 451 may be formed as planar shapes.

[0455] like Figure 20 As shown, the length of the specific-shaped portion 441 in the axial direction Axs1 of the shaft 32 is approximately 1 / 10 of the length of the cylindrical connecting portion 44. The length of the specific-shaped portion 451 in the axial direction Axs1 of the shaft 32 is approximately 1 / 3 of the length of the cylindrical valve connecting portion 45. Therefore, it is possible to suppress the enlargement of the valve body 31.

[0456] <3-13>

[0457] likeFigure 22 As shown, the valve body 31 has an end face opening portion 415 formed in an end face in the rotation axis Axr1 direction of the ball valve 41 to connect the valve inter-space 400 formed on the radially outer side of the cylindrical connecting portion 44 between the ball valve 41 and the ball valve 42 and the valve body inner flow passage 300 of the ball valve 41, and an end face opening portion 425 formed in an end face in the rotation axis Axr1 direction of the ball valve 42 to connect the valve inter-space 400 and the valve body inner flow passage 300 of the ball valve 42. Here, the end face opening portions 415, 425 correspond to the "first end face opening portion" and the "second end face opening portion", respectively.

[0458] The inlet port 220 (refer to Figure 3 ) communicates with the valve inter-space 400. Therefore, the cooling water flowing into the internal space 200 from the inlet port 220 can flow into the valve body inner flow passage 300 via the valve inter-space 400, the end face opening portions 415, 425.

[0459] The valve inter-space 400 is open over the entire region in the circumferential direction. Therefore, the water flow resistance of the cooling water flowing into the internal space 200 from the inlet port 220 and toward the valve body inner flow passage 300 can be reduced.

[0460] As shown in Figure 9 , the valve inter-space 400 overlaps the inlet port 220 and the spill port 224 in the rotation axis Axr1 direction. Therefore, the cooling water flowing in from the inlet port 220 easily flows toward the spill port 224, and the responsiveness of the spill valve 39 can be improved.

[0461] As shown in Figure 20 , the valve inter-space 400 is formed on the radially outer side of the cylindrical connecting portion 44, which is the portion having the smallest outer diameter among the portions of the valve body 31 in the axial direction from the first outermost end face 301 to the second outermost end face 302. Further, the valve inter-space 400 has an outer diameter smaller than the radially outer side of the end face opening portions 415, 425.

[0462] <3-14>

[0463] As shown in Figure 27 , the shaft 32 is integrally formed with the valve body 31 by insert molding at the cylindrical connecting portion 44. That is, the shaft 32 is fused to the cylindrical connecting portion 44, but is not fused to portions other than the cylindrical connecting portion 44 of the valve body 31.

[0464] In the case where the insert molding portion of the shaft 32 is provided in the valve body inner flow passage 300, it is possible that the flow passage area of the valve body inner flow passage 300 becomes small and the water flow resistance becomes large, but in the present embodiment, since the insert molding portion of the shaft 32 is provided at the cylindrical connecting portion 44 outside the valve body inner flow passage 300, the water flow resistance can be reduced.

[0465] <3-15>

[0466] like Figure 27 As shown, the shaft 32 has a rotation-stopping portion 321 capable of restricting relative rotation with the cylindrical connecting portion 44. The cross-sectional shape of the rotation-stopping portion 321 is formed as a polygon. In this embodiment, the cross-sectional shape is formed as a hexagon. Here, the rotation-stopping portion 321 is formed, for example, by cutting the outer peripheral wall of the cylindrical shaft 32 into a planar shape at six points in the circumferential direction. Therefore, the outer wall of the rotation-stopping portion 321 is located radially inward relative to the outer peripheral wall of the shaft 32. In addition, the inner wall of the cylindrical connecting portion 44 is formed as a hexagon in cross-sectional shape in a manner corresponding to the shape of the rotation-stopping portion 321.

[0467] Therefore, the relative rotation of the valve body 31 and the shaft 32 can be restricted through a simple structure.

[0468] <3-16>

[0469] like Figure 28 As shown, the valve body 31 has a cylindrical valve connection part 45 and a ball valve 43. The cylindrical valve connection part 45 is connected to the ball valve 42 on the opposite side of the cylindrical connection part 44. The outer and inner peripheral walls are formed in a cylindrical shape, and a valve body internal flow path 300 is formed on the inner side. The ball valve 43 is connected to the cylindrical valve connection part 45 on the opposite side of the ball valve 42. The outer peripheral wall is formed in a spherical shape.

[0470] The outer and inner peripheral walls of the cylindrical valve connection 45 are formed in a cylindrical shape. Therefore, the flow area of ​​the flow path 300 inside the valve body can be ensured.

[0471] <3-17>

[0472] like Figure 20 As shown, the outer diameter of the outer peripheral wall of ball valve 41 is the same as that of the outer peripheral wall of ball valve 43. In addition, the outer diameter of the outer peripheral wall of ball valve 42 is also the same as that of the outer peripheral wall of ball valve 41 and the outer peripheral wall of ball valve 43.

[0473] The area of ​​the first outermost end face 301, located on the opposite side of the rotation axis Axr1 of ball valve 41 to ball valve 43, is different from the area of ​​the second outermost end face 302, located on the opposite side of the rotation axis Axr1 of ball valve 43 to ball valve 41. Here, the area of ​​the second outermost end face 302 is larger than the area of ​​the first outermost end face 301. Therefore, the length of ball valve 43 in the rotation axis Axr1 direction is shorter than the length of ball valve 41.

[0474] Therefore, the axial size of the valve body 31 can be reduced, and the volume of the valve device 10 can be reduced.

[0475] <3-18>

[0476] As shown in Figure 20 , Figure 22 , the valve body 31 has a valve body opening rib 422 connecting inner edge ends of the valve body opening portions 420 of the ball valves 42, and a valve body opening rib 432 connecting inner edge ends of the valve body opening portions 430 of the ball valves 43. Here, the valve body opening rib 422 and the valve body opening rib 432 correspond to the "2nd valve body opening rib" and the "3rd valve body opening rib", respectively.

[0477] The valve body opening rib 422 and the valve body opening rib 432 are formed at the same position in the circumferential direction of the valve body 31. That is, the valve body opening ribs 422, 432 are arranged in the direction parallel to the rotation axis Axr1. In addition, the valve body opening rib 411 and the valve body opening rib 421 are formed at the same position in the circumferential direction of the valve body 31.

[0478] Therefore, it is possible to suppress the turbulence of the cooling water flowing around the valve body opening ribs 422, 432, and it is possible to reduce the water passage resistance.

[0479] <3-19>

[0480] As shown in Figure 20 , Figure 21 , Figure 22 , the valve body 31 has end face opening ribs 416, 417 connecting the cylindrical connecting portion 44 and the ball valve 41 across the end face opening portion 415, and end face opening ribs 426, 427 connecting the cylindrical connecting portion 44 and the ball valve 42 across the end face opening portion 425. Here, the end face opening ribs 416, 417 correspond to the "1st end face opening rib", and the end face opening ribs 426, 427 correspond to the "2nd end face opening rib".

[0481] The end face opening ribs 416, 426 are each formed with two pieces sandwiching the cylindrical connecting portion 44 therebetween. The end face opening ribs 417, 427 are each formed with two pieces sandwiching the cylindrical connecting portion 44 therebetween.

[0482] In addition, the end face opening ribs 416, 426 are formed on the imaginary plane Vp1. That is, the end face opening ribs 416, 426 are formed sandwiching the joint surfaces 331, 341. Thereby, the valve body opening ribs 411, 421 and the end face opening ribs 416, 426 are formed at the same position in the circumferential direction of the valve body 31.

[0483] As shown in Figure 21 , the start positions of the end face opening ribs 426, 427 are the outer edge portions of the end face of the ball valve 41 on the side of the ball valve 42. The end positions of the end face opening ribs 426, 427 are the outer peripheral walls of the end portions of the cylindrical connecting portion 44 on the side of the ball valve 42.

[0484] AsFigure 21 As shown, the most radially outer portion of the valve body opening rib 421 protrudes further outward than the outer peripheral wall of the ball valve 42 on the side of the start position of the end face opening rib 426. The valve body opening rib 411 is provided radially outward of the linear portion of the end face opening rib 426.

[0485] As shown, the end face opening rib 426 is formed in a straight line shape on the side of the valve body inner flow passage 300 in the direction of the rotation axis Axr1. The end face opening rib 426 is formed in a curved line shape on the side of the valve space 400 in the direction of the rotation axis Axr1 on the radially outer side of the ball valve 42, and is formed in a straight line shape on the radially inner side. Figure 21 As shown, the end face opening rib 426 is formed in a straight line shape on the side of the valve body inner flow passage 300 in the direction of the rotation axis Axr1. The end face opening rib 426 is formed in a curved line shape on the side of the valve space 400 in the direction of the rotation axis Axr1 on the radially outer side of the ball valve 42, and is formed in a straight line shape on the radially inner side.

[0486] As shown, the end face opening rib 426 is formed in a straight line shape on the side of the valve body inner flow passage 300 in the direction of the rotation axis Axr1. The end face opening rib 426 is formed in a curved line shape on the side of the valve space 400 in the direction of the rotation axis Axr1 on the radially outer side of the ball valve 42, and is formed in a straight line shape on the radially inner side. Figure 28 As shown, the end face opening rib 426 is formed in a straight line shape on the side of the valve body inner flow passage 300 in the direction of the rotation axis Axr1. The end face opening rib 426 is formed in a curved line shape on the side of the valve space 400 in the direction of the rotation axis Axr1 on the radially outer side of the ball valve 42, and is formed in a straight line shape on the radially inner side.

[0487] <3-19-1>

[0488] As shown, the end face opening rib 426 is formed in a straight line shape on the side of the valve body inner flow passage 300 in the direction of the rotation axis Axr1. The end face opening rib 426 is formed in a curved line shape on the side of the valve space 400 in the direction of the rotation axis Axr1 on the radially outer side of the ball valve 42, and is formed in a straight line shape on the radially inner side. Figure 20 , Figure 22 As shown, the end face opening rib 426 is formed in a straight line shape on the side of the valve body inner flow passage 300 in the direction of the rotation axis Axr1. The end face opening rib 426 is formed in a curved line shape on the side of the valve space 400 in the direction of the rotation axis Axr1 on the radially outer side of the ball valve 42, and is formed in a straight line shape on the radially inner side.

[0489] Therefore, it is possible to suppress the turbulence of the cooling water flowing around the end face opening ribs 417, 427, the valve body opening ribs 422, 432, and to reduce the water passage resistance.

[0490] <3-20>

[0491] As shown, the end face opening rib 426 is formed in a straight line shape on the side of the valve body inner flow passage 300 in the direction of the rotation axis Axr1. The end face opening rib 426 is formed in a curved line shape on the side of the valve space 400 in the direction of the rotation axis Axr1 on the radially outer side of the ball valve 42, and is formed in a straight line shape on the radially inner side. Figure 20 , Figure 21 , Figure 22 ​​​As shown, end-face open ribs 416 and 417 form a rib end-face gap 418 between their end faces in the direction of the rotation axis Axr1 of the ball valve 41, i.e., the valve end face 419. End-face open ribs 426 and 427 form a rib end-face gap 428 between their end faces in the direction of the rotation axis Axr1 of the ball valve 42, i.e., the valve end face 429. Here, the rib end-face gap 418 corresponds to the "first rib end-face gap", and the rib end-face gap 428 corresponds to the "second rib end-face gap".

[0492] like Figure 20 , Figure 21 As shown, when viewed from a direction perpendicular to the rotation axis Axr1, the end face gap 428 of the ribs 426 and 427 can be visually seen between the end face opening ribs 426 and 427 and the end face of the ball valve 42 in the direction of the rotation axis Axr1.

[0493] Therefore, the water flow resistance at the end face openings 415 and 425 can be reduced.

[0494] <3-21>

[0495] like Figure 20 , Figure 22 As shown, the end face opening rib 417 is formed such that the surface on the ball valve 42 side is inclined relative to the rotation axis Axr1. The end face opening rib 427 is formed such that the surface on the ball valve 41 side is inclined relative to the rotation axis Axr1.

[0496] Therefore, it can reduce the water flow resistance around the end face opening ribs 417 and 427.

[0497] Next, the manufacturing method of valve 30 will be described. In this embodiment, valve 30 is manufactured using a so-called die sliding injection (DSI) method.

[0498] like Figure 29 As shown, the molding device 100 includes a first mold 110, a second mold 120, etc. The first mold 110 has a first outer mold 111 and a first inner mold 112. The second mold 120 has a second outer mold 121 and a second inner mold 122.

[0499] The first outer mold 111 has a first concave surface 113 that is recessed in a hemispherical shape from the end face of the first inner mold 112 side. The first concave surface 113 is formed to correspond to the shape of the outer peripheral wall of the ball valves 41, 42, 43 in the outer peripheral wall of the first segment 33.

[0500] The first inner mold 112 has a first convex surface 114 that protrudes in a hemispherical shape from the end face of the first outer mold 111. The first convex surface 114 is formed to correspond to the shape of the inner peripheral wall of the ball valves 41, 42, and 43 in the outer peripheral wall of the first partition 33. Here, it is set such that when the first outer mold 111 abuts against the first inner mold 112, the distance between the first concave surface 113 and the first convex surface 114 is the same in at least a portion of the range in the direction of the rotation axis Axr1 of the valve body 31 and in the circumferential direction.

[0501] The second outer mold 121 has a second concave surface 123 that is recessed in a hemispherical shape from the end face of the second inner mold 122. The second concave surface 123 is formed to correspond to the shape of the outer peripheral wall of the ball valves 41, 42, and 43 in the outer peripheral wall of the second segment 34.

[0502] The second inner mold 122 has a second convex surface 124 that protrudes in a hemispherical shape from the end face of the second outer mold 121. The second convex surface 124 is formed to correspond to the shape of the inner peripheral wall of the ball valves 41, 42, and 43 in the outer peripheral wall of the second segment 34. Here, it is set such that when the second outer mold 121 abuts against the second inner mold 122, the distance between the second concave surface 123 and the second convex surface 124 is the same in at least a portion of the range in the direction of the rotation axis Axr1 and the circumferential direction of the valve body 31.

[0503] The manufacturing method of valve 30 includes the following steps.

[0504] <3-22> Manufacturing Method of Spherical Valve Body

[0505] (Single molding process)

[0506] In a single molding process, the first segment 33 and the second segment 34 are molded with resin through the first mold 110 and the second mold 120, respectively. Specifically, as follows... Figure 29 As shown in (A), the first outer mold 111 abuts against the first inner mold 112, and the second outer mold 121 abuts against the second inner mold 122, and molten resin is injected between the first concave surface 113 and the first convex surface 114, and between the second concave surface 123 and the second convex surface 171.

[0507] like Figure 30 As shown, the resin injected from the injection section 130 of the molding device 100 flows through the gating system 131, runner 132, gates 133 and 134 to the first mold 110 and the second mold 120. When the first segment 33 and the second segment 34 cool and solidify, one molding process is completed.

[0508] <3-22-1>

[0509] When the first divided body 33 and the second divided body 34 are resin-molded in the one-time molding process, the distance between the first concave surface 113 and the first convex surface 114 and the distance between the second concave surface 123 and the second convex surface 124 are the same in at least a part of the range in the rotation axis Axr1 direction and the circumferential direction.

[0510] Therefore, it is possible to make the thickness of at least a part of the valve body 31 uniform. Thus, it is possible to further improve the accuracy of the spherical surface of the outer peripheral wall of the valve body 31, and to further increase the flow path area of the valve body inner flow path 300.

[0511] <3-23>

[0512] (sliding process)

[0513] In the sliding process after the one-time molding process, the first divided body 33 or the second divided body 34 is slid together with the first mold 110 or the second mold 120 so that the joint surfaces 331, 341 of the first divided body 33 and the second divided body 34 are opposed to each other. Specifically, as shown in (B) of FIG. 6, Figure 29 the first divided body 33 is slid together with the first outer mold 111 so that the first inner mold 112 is separated from the first outer mold 111, the second inner mold 122 is separated from the second outer mold 121, and the joint surfaces 331, 341 of the first divided body 33 and the second divided body 34 are opposed to each other.

[0514] By the sliding process, it is possible to efficiently manufacture the valve 30.

[0515] <3-24>

[0516] (shaft arrangement process)

[0517] In the shaft arrangement process after the sliding process, the shaft 32 is arranged at the rotation axis Axr1 of the valve body 31. Specifically, as shown in (C) of FIG. 6, Figure 29 the shaft 32 is arranged at the rotation axis Axr1 between the first divided body 33 and the second divided body 34.

[0518] Therefore, compared to the case where the shaft 32 is assembled after the valve body 31 is molded, it is possible to reduce the assembly work amount of the shaft 32 and the like.

[0519] <3-22>

[0520] (two-time molding process)

[0521] In the two-time molding process after the shaft arrangement process, resin is injected between the fusion portion of the joint surface of the first divided body 33 and the fusion portion of the joint surface of the second divided body 34, and the first divided body 33 and the second divided body 34 are fused.

[0522] As shown in (A) of FIG. 7, Figure 31As shown, the second divided body 34 after the 1st molding process has the fusion portions 311, 312, 313 formed in the joint surface 341. The fusion portion 311 is formed in a groove shape in such a manner that it is recessed from the joint surface 341 of the portion of the second divided body 34 corresponding to the ball valve 41. The fusion portion 312 is formed in a groove shape in such a manner that it is recessed from the joint surface 341 of the portion of the second divided body 34 corresponding to the cylindrical connecting portion 44. The fusion portion 313 is formed in a groove shape in such a manner that it is recessed from the joint surface 341 of the portion of the second divided body 34 corresponding to the ball valve 42, the cylindrical valve connecting portion 45, and the ball valve 43. In the first divided body 33, too, the fusion portions 311, 312, 313 are formed as in the second divided body 34.

[0523] The gate inlet 141 of the mold device 100 is arranged at one end of the fusion portion 311, and the gate outlet 145 is arranged at the other end of the fusion portion 311. The gate inlet 142 of the mold device 100 is arranged at one end of the fusion portion 312, and the gate outlet 146 is arranged at the other end of the fusion portion 312. The gate inlet 143 of the mold device 100 is arranged at the center of the fusion portion 313, and the gate outlets 147 are arranged at both ends of the fusion portion 313. Here, the gate inlet 142 and the gate outlet 146 are arranged at the center in the axial direction of the cylindrical connecting portion 44. Further, the gate inlet 143 is arranged at the center in the axial direction of the cylindrical valve connecting portion 45. In addition, the gate inlet 141 is arranged at the first outermost end surface 301 of the ball valve 41. The gate outlet 145 is arranged at the end surface of the ball valve 41 on the opposite side from the first outermost end surface 301. The gate outlets 147 are arranged at the second outermost end surface 302 of the ball valve 43 and at the end surface of the ball valve 42 on the side of the ball valve 41.

[0524] As shown in FIG. 6, the gate inlets 141, 142, 143 of the mold device 100 are arranged at the fusion portions 311, 312, 313, respectively. The gate inlet 141 is arranged at the first outermost end surface 301 of the ball valve 41. The gate inlet 142 is arranged at the center in the axial direction of the cylindrical connecting portion 44. The gate inlet 143 is arranged at the center in the axial direction of the cylindrical valve connecting portion 45. Figure 32 As shown in FIG. 6, the gate inlets 141, 142, 143 of the mold device 100 are arranged at the fusion portions 311, 312, 313, respectively. The gate inlet 141 is arranged at the first outermost end surface 301 of the ball valve 41. The gate inlet 142 is arranged at the center in the axial direction of the cylindrical connecting portion 44. The gate inlet 143 is arranged at the center in the axial direction of the cylindrical valve connecting portion 45.

[0525] <3-22>

[0526] As described above, the present embodiment is a manufacturing method of a valve 30 having a valve body 31 capable of rotating around a rotation axis Axr1 and a valve body inner flow path 300 formed on the inner side of the valve body 31, including a 1st molding step and a 2nd molding step.

[0527] At least a portion of the outer peripheral wall of the valve body 31 is formed in a spherical shape, and at least a portion of the inner peripheral wall is formed to be recessed toward the outer side. The valve body 31 has a 1st divided body 33 and a 2nd divided body 34 divided into two by an imaginary plane Vp1 including the rotation axis Axr1, and the 1st divided body 33 and the 2nd divided body 34 are joined at respective joining surfaces 331, 341.

[0528] In the 1st molding step, the 1st divided body 33 and the 2nd divided body 34 are respectively resin molded by a 1st mold 110 and a 2nd mold 120.

[0529] In the 2nd molding step, the 1st divided body 33 and the 2nd divided body 34 are fused by injecting resin between the fusion portions (311, 312, 313) of the joining surface 331 of the 1st divided body 33 and the fusion portions (311, 312, 313) of the joining surface 341 of the 2nd divided body 34.

[0530] By manufacturing the valve 30 with the above manufacturing method, the molding precision of the spherical surface of the outer peripheral wall of the valve body 31 can be improved. Thereby, the leakage of the cooling water at the outer peripheral wall of the valve body 31 can be suppressed.

[0531] Further, the flow path area of the valve body inner flow path 300 can be increased, and the water passing resistance can be reduced.

[0532] As described above, in the present embodiment, the valve 30 is manufactured by mold sliding injection (DSI). In the DSI molding, the valve body 31 is divided into two. Therefore, compared with the case of the usual manufacturing method in which the mold is drawn in the axial direction of the valve body 31, the number of openings of the valve body 31 or the like can be changed without increasing the drawing direction of the mold. As a result, the valve 30 can be manufactured corresponding to a complex flow diagram. In addition, in the case where the valve body 31 is integrally formed, if the number of openings increases, the number of molds for drawing increases.

[0533] In the DSI molding, since the drawing direction is the radial direction of the valve body 31, compared with the case of the usual manufacturing method in which the mold is drawn in the axial direction of the valve body 31, the mold can be prevented from being changed by rubbing against the product surface. In addition to this, the deformation of the product surface can also be prevented, so that the improvement of the sealing property is also brought about.

[0534] (4th Embodiment)

[0535] In Figure 33 , a part of the valve device of the 4th embodiment is shown.

[0536] <3-10>

[0537] like Figure 33 As shown, the valve body opening rib 411 is formed in a straight line at a predetermined distance from the imaginary spherical surface Vs1. In addition, the valve body opening ribs 421, 422 and 431, 432 are also formed in a straight line at a predetermined distance from the imaginary spherical surface along the outer peripheral wall of the ball valves 42 and 43.

[0538] Therefore, when the valve body 31 rotates, it can more effectively suppress the situation where the valve seal 36 gets stuck on the valve body opening rib 411 and the sliding resistance increases.

[0539] like Figure 33 As shown, the valve body opening rib 411 is formed as a straight, flat plate. The radially outer portion of the valve body opening rib 411, i.e., the outer edge 401 of the rib, is formed as a straight line parallel to the rotation axis Axr1, and its distance from the imaginary spherical surface Vs1 varies in the direction of the rotation axis Axr1. The radially inner portion of the valve body opening rib 411, i.e., the inner edge 402 of the rib, is formed as a straight line parallel to the rotation axis Axr1, and its distance from the imaginary spherical surface Vs1 varies in the direction of the rotation axis Axr1. One end of the valve body opening rib 411, i.e., the rib end 403, is connected to the portion opposite to the cylindrical connecting portion 44 in the inner edge end of the valve body opening portion 410. The other end of the valve body opening rib 411, i.e., the rib end 404, is connected to the portion on the side of the cylindrical connecting portion 44 in the inner edge end of the valve body opening portion 410.

[0540] like Figure 33 As shown, the valve body opening rib 411 is located radially outside the ball valve 41 relative to the second limiting protrusion 342.

[0541] (Fifth Embodiment)

[0542] exist Figure 34 The image shows a portion of the valve device according to the fifth embodiment.

[0543] The valve body 31 of valve 30 includes a ball valve 46. A shaft 32 is disposed on the rotation axis Axr1 of the valve body 31. The ball valve 46 has an outer peripheral wall 461 and an inner peripheral wall 462. The outer peripheral wall 461 is spherically shaped and protrudes radially outward from the ball valve 46. The inner peripheral wall 462 is spherically shaped and recessed radially outward from the ball valve 46. Here, the distance between the outer peripheral wall 461 and the inner peripheral wall 462 is the same in at least a portion of the range along the rotation axis Axr1 and circumferentially. That is, the valve body 31 is formed such that its thickness is uniform (uniform thickness), at least within the aforementioned range.

[0544] Next, the manufacturing method of valve 30 will be explained.

[0545] like Figure 35As shown in FIG. 1, the mold device 150 is provided with an upper base 151, a lower base 152, an upper support column 153, a lower support column 154, a mold drive body 155, a first inner side mold 160, a second inner side mold 170, an outer side mold 180, and the like.

[0546] The upper base 151 is formed in a plate shape. The lower base 152 is formed in a plate shape and is disposed in parallel with respect to the upper base 151. The upper support column 153 is formed in a bar shape and is connected at one end to the upper base 151 on the opposite side to the lower base 152. The upper support column 153 is provided with eight (refer to FIG. 2) in a ring shape with one end in the upper base 151 around a central axis CAx1 of the mold device 150. Figure 36 The upper support column 153 is able to swing with the one end as a fulcrum to the other end side toward the central axis CAx1.

[0547] The lower support column 154 is formed in a bar shape and is connected at one end to the lower base 152 on the upper base 151 side. The lower support column 154 is disposed with the other end passing through a hole of the upper base 151 to be located on the opposite side to the lower base 152 with respect to the upper base 151. The lower support column 154 is provided with eight (refer to FIG. 2) in a ring shape with one end in the lower base 152 around the central axis CAx1. Figure 37 The lower support column 154 is able to swing with the one end as a fulcrum to the other end side toward the central axis CAx1.

[0548] The first inner side mold 160 is disposed at the respective other end of the eight upper support columns 153. That is, the first inner side mold 160 is provided in total eight. The second inner side mold 170 is disposed at the respective other end of the eight lower support columns 154. That is, the second inner side mold 170 is provided in total eight.

[0549] As shown in FIG. 1, the first inner side mold 160 has a first convex surface 161 at a portion of an outer wall. The first convex surface 161 is formed in a spherical shape. The second inner side mold 170 has a second convex surface 171 at a portion of an outer wall. The second convex surface 171 is formed in a spherical shape. Figure 38 As shown in FIG. 1, the first inner side mold 160 and the second inner side mold 170 are alternately arranged in a circumferential direction so that the first convex surface 161 and the second convex surface 171 face the opposite side to the central axis CAx1. Thereby, the first convex surface 161 and the second convex surface 171 can form a spherical surface that is continuous in the circumferential direction.

[0550] Figure 35 The outer side mold 180 has a concave surface 181 at an inner wall (refer to FIG. 2). The concave surface 181 is formed in a spherical shape. The outer side mold 180 is arranged outside the first inner side mold 160 and the second inner side mold 170 in a manner that the concave surface 181 opposes the first convex surface 161 and the second convex surface 171.

[0551] The outer side mold 180 has a concave surface 181 at an inner wall (refer to FIG. 2). The concave surface 181 is formed in a spherical shape. The outer side mold 180 is arranged outside the first inner side mold 160 and the second inner side mold 170 in a manner that the concave surface 181 opposes the first convex surface 161 and the second convex surface 171. Figure 39

[0552] ​​The mold drive body 155 is cylindrical. It is coaxially disposed inside the first inner mold 160 and the second inner mold 170, with respect to the central axis CAx1. Engaging grooves 156 are formed on the outer peripheral wall of the mold drive body 155. The engaging grooves 156 extend from one end of the mold drive body 155 to the other end. Eight engaging grooves 156 are formed at equal intervals along the circumference of the mold drive body 155.

[0553] The first inner mold 160 has an engaging protrusion 162 on the side opposite to the first convex surface 161. The engaging protrusion 162 can engage with the engaging groove 156 of the mold drive body 155. Furthermore, the mold drive body 155 can move in the direction of the central axis CAx1 when the engaging protrusion 162 and the engaging groove 156 are engaged. The outer peripheral wall of the mold drive body 155 is formed in a conical shape. Therefore, if the mold drive body 155 moves relative to the first inner mold 160 and the second inner mold 170 towards the upper base 151 in the direction of the central axis CAx1, the eight first inner molds 160 move towards the central axis CAx1 (see reference). Figure 39 , Figure 40 As a result, the inner diameter of the spherical surface formed by the first convex surface 161 decreases. Furthermore, if the first inner mold 160 moves and converges towards the central axis CAx1, the eight second inner molds 170 can also move and converge towards the central axis CAx1. That is, if the first inner mold 160 and the second inner mold 170 move and converge towards the central axis CAx1, the inner diameter of the spherical surface formed by the first convex surface 161 and the second convex surface 171 decreases.

[0554] The manufacturing method of valve 30 includes the following steps.

[0555] <3-25> Manufacturing Method of Spherical Valve Body

[0556] (Resin molding process)

[0557] In the resin molding process, the valve body 31 is resin molded between the outer mold 180 and the first inner mold 160 and the second inner mold 170 disposed inside the outer mold 180. Specifically, as follows... Figure 35 , Figure 39 As shown in (A), molten resin is injected into the space formed between the spherical surface formed by the first convex surface 161 and the second convex surface 171 and the concave surface 181 of the outer mold 180. When the resin cools and solidifies, the resin molding process is completed.

[0558] <3-25-1>

[0559] When the valve body 31 is resin molded in the resin molding process, the concave surface 181 is equidistant from the first convex surface 161 and the second convex surface 171 in at least a portion of the rotation axis Axr1 direction and circumferential direction (see reference). Figure 39(A)).

[0560] Therefore, at least a portion of the valve body 31 can be made uniform in thickness. This further improves the spherical accuracy of the outer peripheral wall of the valve body 31 and further increases the flow area of ​​the internal flow path 300 of the valve body.

[0561] (Mold moving process)

[0562] In the mold moving process following the resin molding process, the first inner mold 160 and the second inner mold 170 are moved inward toward the valve body 31. Specifically, as follows: Figure 39 (A), (B) Figure 40 As shown in (A) to (E), the mold drive body 155 is moved relative to the first inner mold 160 and the second inner mold 170 in the direction of the central axis CAx1, causing the first inner mold 160 and the second inner mold 170 to move towards the central axis CAx1, thereby reducing the diameter of the spherical surface formed by the first convex surface 161 and the second convex surface 171. This creates a gap between the inner peripheral wall 462 of the valve body 31 and the first convex surface 161 and the second convex surface 171. Furthermore, by moving the first inner mold 160 and the second inner mold 170 relative to the valve body 31 in the direction of the central axis CAx1, the first inner mold 160 and the second inner mold 170 are pulled out from the valve body 31.

[0563] <3-26>

[0564] like Figure 41 As shown in (A) and (B), the protrusion height H1 of the first convex surface 161 and the second convex surface 171 is set to be smaller than the distance Dm1 that the first inner mold 160 and the second inner mold 170 can move during the mold moving process.

[0565] Therefore, when the first inner mold 160 and the second inner mold 170 are pulled out from the valve body 31, the first convex surface 161 and the second convex surface 171 will not interfere with the inner peripheral wall 462 of the valve body 31, and the first inner mold 160 and the second inner mold 170 can be easily pulled out from the valve body 31.

[0566] <3-25>

[0567] As described above, this embodiment is a method for manufacturing a valve 30 having a valve body 31 capable of rotating about a rotation axis Axr1 and a valve body flow path 300 formed inside the valve body 31, including a resin molding process and a mold moving process.

[0568] At least a portion of the outer peripheral wall of the valve body 31 is formed into a spherical shape, and at least a portion of the inner peripheral wall is formed into an outward concavity.

[0569] In the resin molding step, the valve body 31 is resin molded between the outer mold 180 and the inner mold (160, 170) arranged on the inner side of the outer mold 180.

[0570] In the mold moving step, after the resin molding step, the inner mold (160, 170) is moved toward the inner side of the valve body 31.

[0571] By manufacturing the valve 30 with the above manufacturing method, the molding precision of the spherical surface of the outer peripheral wall of the valve body 31 can be improved. Thereby, the leakage of the cooling water of the outer peripheral wall of the valve body 31 can be suppressed.

[0572] Further, the flow path area of the valve body inner flow path 300 can be increased, and the water passage resistance can be reduced.

[0573] (6th Embodiment)

[0574] In Figure 42 , a valve device of the 6th embodiment is shown. The structure of the valve 30 and the like in the 6th embodiment is different from that of the 1st embodiment.

[0575] The ball valves 41, 42, the cylindrical valve connecting portion 45, and the ball valve 43 of the valve body 31 are integrally formed in this order from the drive portion 70 side in the direction of the rotation axis Axr1 toward the side opposite to the drive portion 70. The valve body 31 is formed in a cylindrical shape, and the inner peripheral wall of the ball valves 41, 42, the cylindrical valve connecting portion 45, and the ball valve 43 is formed in a substantially cylindrical surface shape centered on the rotation axis Axr1. In addition, the inner peripheral wall of the valve body 31 is formed in a tapered shape, and the inner diameter becomes larger as it goes from the drive portion 70 side in the direction of the rotation axis Axr1 toward the side opposite to the drive portion 70. The valve body 31 is formed so that the outer peripheral wall is in a spherical surface shape in the ball valves 41, 42, and 43. The shaft 32 is integrally provided with the valve body 31 at the rotation axis Axr1.

[0576] The outlet ports 221, 222, and 223 are respectively formed at positions corresponding to the ball valves 41, 42, and 43. The end portion of the pipe portion 511 on the side opposite to the outlet port 221 is connected to the radiator 5 via a hose or the like. The end portion of the pipe portion 512 on the side opposite to the outlet port 222 is connected to the heater 6 via a hose or the like. The end portion of the pipe portion 513 on the side opposite to the outlet port 223 is connected to the device 7 via a hose or the like.

[0577] As Figure 42 shown, the ball valves 41, 42, and 43 are respectively provided at positions corresponding to the outlet ports 221, 222, and 223. Here, the "position corresponding to the outlet port 221, 222, or 223" means a range overlapping with the projection when the outlet port 221, 222, or 223 is projected in the axial direction of the outlet port 221, 222, or 223.

[0578] As Figure 42As shown, the cylindrical valve connecting portion 45 is provided between the outlet port 222 and the outlet port 223 in the direction of the rotation axis Axr1.

[0579] The mounting surface 201 is formed orthogonal to the pipe mounting surface 202 (see FIG. 1). The inlet port 220 is formed so as to open on the mounting surface 201. The opening of the inlet port 220 on the mounting surface 201 is circular. Figure 43 ). The inlet port 220 is formed so as to open on the mounting surface 201. The opening of the inlet port 220 on the mounting surface 201 is circular.

[0580] As shown, the valve device 10 is mounted to the engine 2 in the narrow space A2 between the engine 2 and the inverter 16. Here, the valve device 10 is mounted to the engine 2 so that the pipe member 50 is located on the vertical direction upper side with respect to the valve 30. Figure 44

[0581] <1-1> Housing close fitting hole

[0582] As shown in FIG. 1 and FIG. 2, the housing 20 has close fitting portions 231, 232, 233 formed integrally with the housing main body 21. The close fitting portions 231, 232, 233 are formed so as to protrude from the end portion of the mounting surface 201 side of the housing main body 21 toward the face direction of the mounting surface 201. Further, the housing 20 has close fitting holes 241, 242, 243 formed in correspondence with the close fitting portions 231, 232, 233, respectively. Figure 42 Figure 43 The close fitting member 240 is inserted into the close fitting holes 241, 242, 243, and is close fitted to the engine 2. By this, the valve device 10 is mounted to the engine 2. On the radial direction outer side of the inlet port 220 of the mounting surface 201, a port sealing member 209 made of rubber is provided. The port sealing member 209 is in a state of being compressed by the axial force of the close fitting member 240 in a state in which the valve device 10 is mounted to the engine 2. By this, the port sealing member 209 can maintain the liquid tightness between the mounting surface 201 and the engine 2, and suppresses the leakage of the cooling water from the inlet port 220 via between the mounting surface 201 and the engine 2.

[0583] As shown in FIG. 1 and FIG. 2, the housing 20 has close fitting portions 231, 232, 233 formed integrally with the housing main body 21. The close fitting portions 231, 232, 233 are formed so as to protrude from the end portion of the mounting surface 201 side of the housing main body 21 toward the face direction of the mounting surface 201. Further, the housing 20 has close fitting holes 241, 242, 243 formed in correspondence with the close fitting portions 231, 232, 233, respectively.

[0584] As shown in FIG. 1 and FIG. 2, the housing 20 has close fitting portions 231, 232, 233 formed integrally with the housing main body 21. The close fitting portions 231, 232, 233 are formed so as to protrude from the end portion of the mounting surface 201 side of the housing main body 21 toward the face direction of the mounting surface 201. Further, the housing 20 has close fitting holes 241, 242, 243 formed in correspondence with the close fitting portions 231, 232, 233, respectively. Figure 43 <1-1>

[0585] As described above, the present embodiment is a valve device 10 capable of controlling the cooling water of the engine 2 of the vehicle 1, and has a housing 20 and a valve 30.

[0586]

[0587] ​​​The housing 20 has a housing main body 21 that forms an internal space 200 on an inner side, a mounting surface 201 that is formed on an outer wall of the housing main body 21 and opposes the engine 2 in a state of being mounted to the engine 2, an inlet port 220 that is opened on the mounting surface 201 and connects the internal space 200 with the outside of the housing main body 21, a plurality of fastening portions (231, 232, 233) that are formed integrally with the housing main body 21, and a plurality of fastening holes (241, 242, 243) that are formed in correspondence with the plurality of fastening portions, respectively.

[0588] The valve 30 has a valve body 31 that is rotatable within the internal space 200 about a rotation axis Axr1, and a valve internal flow path 300 that is formed on an inner side of the valve body 31 and is communicable with the inlet port 220.

[0589] The housing main body 21 is fixed to the engine 2 with a fastening member 240 that is screwed to the engine 2 through the fastening holes (241, 242, 243).

[0590] The fastening holes are formed in at least three.

[0591] The opening of the inlet port 220 is formed on an inner side of a triangle Ti1 that is formed by connecting the three fastening holes (241, 242, 243).

[0592] Therefore, in a case where the port sealing member 209 composed of a ring-shaped elastic member is provided around the inlet port 220, when the housing main body 21 is fixed to the engine 2 with the fastening member 240 that passes through the three fastening holes (231, 232, 233), the port sealing member 209 can be compressed in good balance. Thus, the sealability around the inlet port 220 can be effectively ensured.

[0593] As shown in FIG. 1, the fastening portion 231 is formed so as to protrude from the housing main body 21 in a longer direction of the housing main body 21. The fastening portions 232, 233 are formed so as to protrude from the housing main body 21 in a shorter direction of the housing main body 21. Figure 43 As shown in FIG. 1, the protrusion start position of the fastening portion 231 is a corner portion of the rectangular mounting surface 201 of the housing main body 21 on which the inlet port 220 is formed, on an opposite side to the driving portion 70. The protrusion start position of the fastening portion 232 is a portion of the inlet port 220 in the vicinity of the edge of the rectangular mounting surface 201 of the housing main body 21 on which the inlet port 220 is formed, among two edges extending in the longer direction, on an opposite side to the fastening portion 233. The protrusion start position of the fastening portion 233 is a portion of the driving portion 70 side of the end portion in the shorter direction of the housing main body 21.

[0594] Figure 43

[0595] Figure 43 ​​​As shown, the distance from the center Cp1 of the inlet port 220 to the side of the triangle Tii that links the center of the close proximity hole 241 and the center of the close proximity hole 242 is smaller than the distance from the center Cp1 to the side that links the center of the close proximity hole 242 and the center of the close proximity hole 243. The distance from the center Cp1 to the side that links the center of the close proximity hole 243 and the center of the close proximity hole 241 is smaller than the distance from the center Cp1 to the side that links the center of the close proximity hole 242 and the center of the close proximity hole 243.

[0596] <4-1> Cover fixing portion protrusion suppression

[0597] As shown in Figs. 1 and 2, the drive portion cover 80 has a cover main body 81 that forms a drive portion space 800, and cover fixing portions 821 to 826 that are formed in the outer edge portions of the cover main body 81 and are fixed to the housing main body 21. Figure 45 Figure 46 As shown in Figs. 1 and 2, the drive portion cover 80 has a cover main body 81 that forms a drive portion space 800, and cover fixing portions 821 to 826 that are formed in the outer edge portions of the cover main body 81 and are fixed to the housing main body 21.

[0598] The cover fixing portions 821 to 826 each have a cover close proximity hole 831 to 836 formed therein. The fixing member 830 is inserted through the cover close proximity holes 831 to 836 and is close proximately attached to the housing main body 21.

[0599] Here, the cover fixing portions 823 and 824 are formed so as not to protrude outward from at least one of the both end portions in the direction Dv1 perpendicular to the mounting surface 201 of the housing main body 21.

[0600] Specifically, the cover fixing portions 823 and 824 are formed so as not to protrude outward, i.e., toward the side opposite to the mounting surface 201, from the housing end portion 215, which is the end portion of the housing main body 21 on the side opposite to the mounting surface 201 in the direction Dv1 perpendicular to the mounting surface 201.

[0601] Figure 45 The imaginary plane Vp3 shown in Fig. 2 is an imaginary plane that passes through the housing end portion 215 and is parallel to the mounting surface 201. The cover fixing portions 823 and 824 are located on the mounting surface 201 side with respect to this imaginary plane Vp3.

[0602] Further, the cover fixing portions 821 and 826 are formed so as not to protrude outward, i.e., toward the mounting surface 201, from the housing end portion 216, which is the end portion of the housing main body 21 on the mounting surface 201 side in the direction Dv1 perpendicular to the mounting surface 201. That is, the cover fixing portions 821 and 826 are located on the imaginary plane Vp3 side with respect to the mounting surface 201.

[0603] Here, the cover main body 81 is a part of the drive portion cover 80, and refers to a portion that forms the drive portion space 800. Therefore, the cover fixing portions 821 to 826, although being portions that constitute the drive portion cover 80, are formed as portions different from the cover main body 81.

[0604] As shown in Figs. 1 and 2, the drive portion cover 80 has a cover main body 81 that forms a drive portion space 800, and cover fixing portions 821 to 826 that are formed in the outer edge portions of the cover main body 81 and are fixed to the housing main body 21. Figure 45 ​As shown, on the outer wall of the cover main body 81, a cover flat surface portion 811, 812, 813, a cover curved surface portion 814 are formed. The cover flat surface portion 811 is formed in one flat surface in an orthogonal manner with respect to the rotation axis Axr1. The cover flat surface portion 812 is formed in a plurality of flat surfaces in a parallel manner with respect to the rotation axis Axr1. The cover flat surface portion 813 is formed in one flat surface in an inclined manner with respect to the rotation axis Axr1. The cover curved surface portion 814 is formed in a plurality of curved surfaces in a parallel manner with respect to the rotation axis Axr1. Here, the plurality of cover curved surface portions 814 are connected to each other.

[0605] As shown, the cover fastening hole 831 to 833 are formed on the tube member 50 side with respect to the axis Axm1 of the motor 71. The cover fastening hole 834 to 836 are formed on the connector portion 84 side with respect to the axis Axm1 of the motor 71. The cover fastening hole 833 is formed at a position closer to the axis Axm1 of the motor 71 than the cover fastening hole 831, 832. The cover fastening hole 834 is formed at a position closer to the axis Axm1 of the motor 71 than the cover fastening hole 835, 836. Figure 45

[0606] <4-1>

[0607] As described above, the present embodiment is a valve device 10 capable of controlling the cooling water of the engine 2 of the vehicle 1, and includes a housing 20, a valve 30, a partition wall portion 60, a drive portion cover 80, and a drive portion 70.

[0608] The housing 20 has a housing main body 21 that forms an internal space 200 on the inside, a mounting surface 201 that is formed on the outer wall of the housing main body 21 and opposes the engine 2 in a state of being mounted to the engine 2, and ports (220, 221, 222, 223) that connect the internal space 200 and the outside of the housing main body 21.

[0609] The valve 30 has a valve body 31 that is rotatable within the internal space 200 about a rotation axis Axr1, a valve body internal flow path 300 that is formed on the inside of the valve body 31, valve body opening portions (410, 420, 430) that connect the valve body internal flow path 300 and the outside of the valve body 31, and a shaft 32 that is provided to the rotation axis Axr1, and is capable of changing the communication state between the valve body internal flow path 300 and the ports (220, 221, 222, 223) via the valve body opening portions (410, 420, 430) according to the rotation position of the valve body 31.

[0610] The partition wall portion 60 is provided to partition the internal space 200 and the outside of the housing main body 21, and has a shaft insertion hole 62 that is formed to be capable of inserting one end of the shaft 32.

[0611] ​The drive unit cover 80 is disposed on the opposite side of the internal space 200 relative to the partition wall 60, forming a drive unit space 800 between it and the partition wall 60.

[0612] The drive unit 70 is provided in the drive unit space 800 and can drive the valve body 31 to rotate via one end of the shaft 32.

[0613] The drive unit cover 80 has a cover body 81 that forms the drive unit space 800, and a cover fixing part (821-826) formed on the outer edge of the cover body 81 and fixed to the housing body 21.

[0614] The cover fixing part (821-826) is formed such that it does not protrude outward in at least one of the two ends (215, 216) of the housing body 21 in the direction perpendicular to the mounting surface 201.

[0615] Therefore, the volume of the drive unit cover 80 in the direction Dv1 perpendicular to the mounting surface 201 can be reduced, and the volume of the valve device 10 in the direction Dv1 perpendicular to the mounting surface 201 can also be reduced. As a result, the valve device 10 can be mounted in the confined space A2 of the vehicle 1.

[0616] like Figure 44 As shown, various devices are mounted around the engine 2. Therefore, the space available for mounting the valve device 10 is limited within the engine compartment. In this embodiment, since the volume of the valve device 10 can be reduced, it can be easily mounted in the confined space A2 of the vehicle 1 (see reference 1). Figure 44 ).

[0617] <4-1-1>

[0618] like Figure 45 As shown, the cover fixing parts 821 to 826 are located on an imaginary plane Vp4 that is perpendicular to the mounting surface 201. In addition, the imaginary plane Vp4 is also a plane that is perpendicular to the rotation axis Axr1 and the axis Axs1 of the shaft 32.

[0619] Therefore, the height of the drive unit cover 80 can be reduced.

[0620] <4-2>

[0621] like Figure 45 As shown, the end of the housing body 21 opposite to the mounting surface 201, namely the housing end 215, is formed such that it does not protrude outward compared to the end of the cover body 81 opposite to the mounting surface 201, namely the cover end 815. Furthermore, the cover end 815 is formed along an imaginary plane Vp3.

[0622] Therefore, the volume of the housing body 21 in the direction Dv1 perpendicular to the mounting surface 201 can be reduced, and the volume of the valve device 10 in the direction Dv1 perpendicular to the mounting surface 201 can be further reduced.

[0623] <4-2-1>

[0624] like Figure 46 As shown, the housing body 21 has a notch 212 at the end opposite to the mounting surface 201, namely the housing end 215, which exposes the partition wall portion 60.

[0625] Therefore, the volume of the valve device 10 in the direction Dv1 perpendicular to the mounting surface 201 can be further reduced.

[0626] like Figure 45 As shown, the notch 212 is formed between the cover fixing part 823 and the cover fixing part 824.

[0627] <4-3>

[0628] like Figure 45 As shown, the connector portion 84 is formed such that at least one of the two ends of the cover body 81 in the direction Dv1 perpendicular to the mounting surface 201 does not protrude outward.

[0629] Specifically, the connector portion 84 is formed such that it does not protrude outward from the end of the cover body 81 in the direction Dv1 perpendicular to the mounting surface 201, i.e., the cover end 815, which is opposite to the mounting surface 201. That is, the connector portion 84 is located on the mounting surface 201 side relative to the imaginary plane Vp3.

[0630] Furthermore, the connector portion 84 is formed such that it does not protrude outward from the end of the cover body 81 on the mounting surface 201 side (i.e., the cover end 816) in the direction Dv1 perpendicular to the mounting surface 201, i.e., on the mounting surface 201 side. That is, the connector portion 84 is located on the imaginary plane Vp3 side relative to the mounting surface 201.

[0631] <4-3-1>

[0632] like Figure 45 As shown, the connector portion 84 is formed to protrude from the outer edge of the cover body 81 in a direction other than Dv1, which is perpendicular to the mounting surface 201.

[0633] <4-3-2>

[0634] Specifically, the connector portion 84 is formed to protrude from the outer edge of the cover body 81 in a direction Dp1 parallel to the mounting surface 201. In addition, the parallel direction Dp1 is a direction perpendicular to the rotation axis Axr1 and the axis Axs1 of the shaft 32.

[0635] Accordingly, it is possible to further reduce the volume of the drive portion cover 80 in the direction Dv1 perpendicular to the mounting surface 201, and further reduce the volume of the valve device 10 in the direction Dv1 perpendicular to the mounting surface 201.

[0636] As shown in FIG. 1, the connector portion 84 is formed so as to protrude in the direction Dp1 from a portion between the cover fixing portion 825 and the cover fixing portion 826 in the outer edge portion of the cover main body 81. Figure 45

[0637] <4-4>

[0638] As described above, the present embodiment is a valve device 10 capable of controlling the coolant water of the engine 2 of the vehicle 1, and includes the housing 20, the valve 30, the partition wall portion 60, the drive portion cover 80, and the drive portion 70.

[0639] As shown in FIG. 1, the housing 20 includes a housing main body 21 that forms an internal space 200 on the inside, housing side cover fixing portions (291 to 296) that are formed as different portions from the housing main body 21 so as to protrude from the outer wall of the housing main body 21, a mounting surface 201 that is formed on the outer wall of the housing main body 21 and opposes the engine 2 in a state of being mounted to the engine 2, and ports (220, 221, 222, 223) that connect the internal space 200 and the outside of the housing main body 21. Figure 45 The valve 30 includes a valve body 31 that is rotatable in the internal space 200 about a rotation axis Axr1, a valve body internal flow path 300 that is formed on the inside of the valve body 31, valve body opening portions (410, 420, 430) that connect the valve body internal flow path 300 and the outside of the valve body 31, and a shaft 32 that is provided to the rotation axis Axr1, and is capable of changing the communication state between the valve body internal flow path 300 and the ports (220, 221, 222, 223) via the valve body opening portions (410, 420, 430) in accordance with the rotational position of the valve body 31.

[0640] The partition wall portion 60 is provided so as to partition the internal space 200 and the outside of the housing main body 21, and includes a shaft insertion hole 62 that is formed so as to allow one end of the shaft 32 to be inserted therethrough.

[0641] The drive portion cover 80 is provided on the side opposite the internal space 200 with respect to the partition wall portion 60, and forms a drive portion space 800 between the partition wall portion 60.

[0642] The drive portion 70 is provided in the drive portion space 800, and is capable of rotationally driving the valve body 31 via one end of the shaft 32.

[0643] As shown in FIG. 1, the connector portion 84 is formed so as to protrude in the direction Dp1 from a portion between the cover fixing portion 825 and the cover fixing portion 826 in the outer edge portion of the cover main body 81.

[0644] Figure 45 ​​As shown, the drive unit cover 80 has a cover body 81 that forms the drive unit space 800, and cover fixing parts (821-826) that are formed at a different location from the cover body 81 by protruding from the outer wall of the cover body 81 and are fixed to the cover fixing parts (291-296) on the housing side. Here, the cover fixing parts 821-826 are fixed to the cover fixing parts 291-296 on the housing side by fixing members 830, respectively.

[0645] The cover fixing portions (821-826) are formed such that they do not protrude outward from at least one of the two ends (215, 216) of the housing body 21 in the direction Dv1 perpendicular to the mounting surface 201. Here, the two ends of the housing body 21 in the direction Dv1 perpendicular to the mounting surface 201, namely the housing ends 215 and 216, are formed on the housing body 21 as different parts from the housing side cover fixing portions 291-296.

[0646] Therefore, the volume of the drive unit cover 80 in the direction Dv1 perpendicular to the mounting surface 201 can be reduced, and the volume of the valve device 10 in the direction Dv1 perpendicular to the mounting surface 201 can also be reduced. As a result, the valve device 10 can be mounted in the confined space A2 of the vehicle 1.

[0647] <4-5>

[0648] like Figure 45 As shown, with the housing body 21 mounted on the engine 2, the cover fixing portions 821 to 826 are formed such that they do not protrude outward from at least one of the two ends (215, 216) of the housing body 21 in the horizontal direction, which is perpendicular to the mounting surface 201 and Dv1. That is, the cover fixing portions 821 to 826 are formed such that, compared to the housing end 215, they do not protrude in the thinnest direction of the housing body 21, i.e., in the direction Dv1 perpendicular to the mounting surface 201.

[0649] Therefore, the volume of the drive unit cover 80 in the direction perpendicular to the mounting surface 201 (Dv1) and in the horizontal direction can be reduced, and the volume of the valve device 10 in the direction perpendicular to the mounting surface 201 (Dv1) and in the horizontal direction can also be reduced. As a result, the valve device 10 can be mounted in a small space A2 in the narrow space in the direction perpendicular to the mounting surface 201 (Dv1) and in the horizontal direction.

[0650] <5-1> Gap between the fixing parts on the side of the shell

[0651] like Figure 47As shown, the housing 20 has housing-side fixing portions 251 to 256 integrally formed with the housing body 21. Here, the housing-side fixing portions 251 to 253 are arranged in a direction parallel to the rotation axis Axr1 on the opposite side of the mounting surface 201, relative to the imaginary plane Vp5 which includes the rotation axis Axr1 and is parallel to the mounting surface 201. Furthermore, the housing-side fixing portions 254 to 256 are arranged in a direction parallel to the rotation axis Axr1 on the mounting surface 201 side, relative to the imaginary plane Vp5. That is, the imaginary plane Vp5 is sandwiched between the housing-side fixing portions 251 to 253 and the housing-side fixing portions 254 to 256.

[0652] Furthermore, the distance between housing-side fixing portions 251 and 252 is greater than the distance between housing-side fixing portions 252 and 253. The distance between housing-side fixing portions 254 and 255 is the same as the distance between housing-side fixing portions 255 and 256. Additionally, the distance between housing-side fixing portions 252 and 253 is smaller than the distance between housing-side fixing portions 255 and 256.

[0653] Furthermore, the housing-side fixing portion 251 is formed on the drive portion 70 side relative to the housing-side fixing portion 254 in the rotation axis Axr1 direction. The housing-side fixing portion 252 is formed on the housing-side fixing portion 256 side relative to the housing-side fixing portion 255 in the rotation axis Axr1 direction. The housing-side fixing portion 253 is formed on the side slightly opposite to the drive portion 70 relative to the housing-side fixing portion 256 in the rotation axis Axr1 direction.

[0654] Housing-side fastening holes 261-266 are formed in the housing-side fixing portions 251-256 respectively. Furthermore, the housing-side fastening holes 261-266 are generally cylindrical and are formed such that their axes are parallel to the mounting surface 201, the imaginary plane Vp5, and the vertical direction. Additionally, no threaded grooves are pre-formed on the inner peripheral walls of the housing-side fastening holes 261-266.

[0655] like Figure 47 As shown, the pipe component 50 includes pipe sections 511-514, a pipe connecting section 52, and pipe-side fixing sections 531-536. Pipe sections 511-513 are respectively configured such that their inner spaces communicate with outlet ports 221-223. Pipe section 514 is configured such that its inner space communicates with overflow port 224. Pipe sections 511 and 514 are integrally formed, and their inner spaces are interconnected. Furthermore, although pipe sections 512 and 514 are integrally formed to connect to each other via their outer walls, their inner spaces are not interconnected. The pipe connecting section 52 is integrally formed with pipe sections 511-514, connecting the ends of pipe sections 511-514 on the housing body 21 side to each other.

[0656] The tube-side fixing portions 531 to 536 are formed on the outer edge of the tube connecting portion 52 at positions corresponding to the housing-side fixing portions 251 to 256. Tube-side connecting holes 541 to 546 are formed in the tube-side fixing portions 531 to 536 respectively. Furthermore, the tube-side connecting holes 541 to 546 are generally cylindrical, and their axes are generally aligned with the axes of the housing-side connecting holes 261 to 266.

[0657] The valve device 10 includes a pipe fastening member 540. The pipe fastening member 540 passes through pipe-side fastening holes 541 to 546 and engages with housing-side fastening holes 261 to 266, thereby fixing the pipe-side fixing parts 531 to 536 and the housing-side fixing parts 251 to 256.

[0658] like Figure 48 , Figure 49 As shown, the housing-side fixing portions 251-256 are formed in a generally cylindrical shape. The housing-side fixing portions 251-256 are configured such that one axial end face is located on the same plane as the pipe mounting surface 202. The housing 20 has a housing connecting portion 259 that connects the outer peripheral wall of the other axial end face of the housing-side fixing portions 251-256 to the outer wall of the housing body 21. Thus, a housing gap Sh1 is formed between the housing-side fixing portions 251-256 and the outer wall of the housing body 21. The housing gap Sh1 is formed between the housing connecting portion 259 and the pipe-side fixing portions 531-536.

[0659] More specifically, the shell gap Sh1 is formed between the shell-side fixing parts 251-256 and the outer wall of the shell body 21 and the shell connection part 259 and the tube-side fixing parts 531-536.

[0660] Furthermore, the housing-side connecting holes 261 to 266 are respectively formed coaxially with the housing-side fixing portions 251 to 256. In addition, the ends of the housing-side connecting holes 261 to 266 on the side opposite to the tube member 50 are located closer to the tube member 50 than the housing connecting portion 259.

[0661] <5-1>

[0662] As described above, this embodiment is a valve device 10 capable of controlling the cooling water of the engine 2 of vehicle 1, comprising a housing 20, a valve 30, a pipe component 50, and a pipe connecting component 540.

[0663] The housing 20 has: a housing body 21, which forms an internal space 200 on its inner side; a housing side fixing part (251-256) integrally formed with the housing body 21; a housing side connecting hole (261-266) formed on the housing side fixing part; and ports (220, 221, 222, 223, 224) connecting the internal space 200 to the outside of the housing body 21.

[0664] The valve 30 has a valve body 31 that can rotate around a rotation axis Axr1 within an internal space 200, a valve body internal flow path 300 formed inside the valve body 31, and a valve body opening (410, 420, 430) that connects the valve body internal flow path 300 to the outside of the valve body 31. The valve body opening can change the connection state between the valve body internal flow path 300 and the port through the valve body opening according to the rotation position of the valve body 31.

[0665] The tube component 50 has a cylindrical tube portion (511, 512, 513, 514) that communicates with the inner space and the port (221, 222, 223, 224), a tube-side fixing portion (531 to 536) integrally formed with the tube portion and fixed to the housing-side fixing portion, and a tube-side connecting hole (541 to 546) formed in the tube-side fixing portion.

[0666] The pipe fastening component 540 fixes the pipe-side fixing part (531-536) and the housing-side fixing part (251-256) by passing through the pipe-side fastening hole (541-546) and screwing into the housing-side fastening hole (261-266).

[0667] The housing side fixing part (251-256) forms a gap (Sh1) between itself and the outer wall of the housing body 21.

[0668] Therefore, when the pipe component 50 is tightly connected to the housing 20 by the pipe fastening component 540, even if the housing-side fixing part (251-256) breaks, the breakage can be prevented from reaching the housing body 21. Thus, leakage of cooling water that may occur due to the tight connection of the pipe component 50 to the housing 20 can be suppressed.

[0669] In this embodiment, since the outlet port 221 is connected to the radiator 5 and has a large flow rate, the leakage of cooling water can be effectively suppressed by suppressing the cracking of the housing side fixing parts (251-256), especially the housing side fixing parts 251 and 254 near the outlet port 221, to the housing body 21.

[0670] like Figure 47 As shown, the outlet port 221 is formed between the housing-side fixing portion 251 and the housing-side fixing portion 254. Here, the housing-side fixing portions 251 and 254 are formed closer to the outlet port 221 than the housing-side fixing portions 252, 253, 255, and 256, i.e., near the outlet port 221. Furthermore, the center of the outlet port 221 is located between two parallel tangents that are tangent to the outer edges of the housing-side connecting holes 261 and 264.

[0671] <5-2>

[0672] like Figure 42As shown, the housing 20 has outlet ports 221-223. (As indicated...) Figure 42 , Figure 50 , Figure 51 As shown, the pipe component 50 has interconnected pipe sections 511 to 513. The valve device 10 includes a plurality of sealing units 35 respectively provided in the pipe sections 511 to 513, which are capable of maintaining a liquid seal between the sealing unit and the outer peripheral wall of the valve body 31.

[0673] Therefore, the number of parts can be reduced, such as with tapping. Furthermore, the assembly workload of pipe component 50 can be reduced.

[0674] The ends of the sealing units 35 in the tube sections 511 to 513 are connected to each other via the tube connection section 52. The ends of the sealing units 35 in the tube sections 511 to 513 are formed such that their respective axes are parallel to each other.

[0675] <5-2-1>

[0676] like Figure 42 As shown, the outlet ports 221-223, which are equipped with sealing units 35, are formed such that their respective axes are parallel and they are open on the pipe mounting surface 202. The outlet ports 221-223 are formed to be coaxial with the ends of the pipe sections 511-513 where the sealing units 35 are provided.

[0677] Therefore, the pipe component 50, which is assembled with multiple sealing units 35, can be assembled into the housing body 21 from one direction.

[0678] <5-3>

[0679] like Figure 42 , Figure 50 , Figure 51 As shown, the valve device 10 includes a gasket 509. The gasket 509 is formed of an elastic component such as rubber, and is provided on the radial outer side of each of the pipe sections 511 to 513 between the pipe section 50 and the pipe mounting surface 202 of the housing body 21, so as to keep the pipe section 50 and the housing body 21 liquid-tight.

[0680] like Figure 51 As shown, the tube component 50 can be assembled to the housing body 21 while the three sealing units 35 are held in the tube sections 511-513. Here, the gasket 509 is assembled to the housing body 21 together with the tube component 50 while being embedded in the gasket groove 521 formed in the tube connection section 52. That is, the tube component 50, which is equipped with multiple sealing units 35 and gaskets 509, can be assembled in one direction relative to the housing body 21 at once.

[0681] Furthermore, by assembling multiple components at once, the amount of assembly work can be reduced, thereby reducing multiple potential defects that might occur during the assembly of multiple components to a single defect, thus improving the quality of the valve device 10. This is important because devices mounted in vehicle 1 require high quality.

[0682] like Figure 50 As shown, the outer diameters of the three sealing units 35 respectively provided at pipe sections 511 to 513 are set according to the inner diameters of pipe sections 511 to 513. The outer diameter of the sealing unit 35 provided at pipe section 511 is larger than the outer diameter of the sealing units 35 provided at pipe sections 512 and 513. The outer diameter of the sealing unit 35 provided at pipe section 512 is approximately the same as the outer diameter of the sealing unit 35 provided at pipe section 513.

[0683] <5-4>

[0684] like Figure 47 As shown, the outlet ports 221 to 223 and the overflow port 224 are formed such that their centers are located on the straight line connecting two of the multiple housing-side connecting holes (261 to 266), or on the inside of the triangle formed by the three housing-side connecting holes.

[0685] Specifically, outlet port 221 is centered on the inner side of triangle To1, formed by connecting the centers of housing-side connecting holes 261, 262, and 264. Outlet port 222 is centered on the straight line Lo1 connecting the centers of housing-side connecting holes 262 and 265. Outlet port 223 is centered on the inner side of triangle To2, formed by connecting the centers of housing-side connecting holes 262, 263, and 266. Overflow port 224 is centered on the inner side of triangle To1.

[0686] Therefore, the sealing load of the gasket 509 on the radially outer side of the outlet ports 221-223 and the overflow port 224 can be dispersed and stabilized.

[0687] <5-5>

[0688] like Figure 42 As shown, the housing 20 has a pipe mounting surface 202 formed on the outer wall of the housing body 21, such that it faces the pipe component 50 when the pipe component 50 is mounted on the housing body 21. The ports formed on the housing body 21 include three outlet ports (221-223) and one overflow port 224 that open on the pipe mounting surface 202.

[0689] like Figure 47As shown, the valve device 10 includes an overflow valve 39. The overflow valve 39 is located at the overflow port 224 and allows or disconnects communication between the internal space 200 of the overflow port 224 and the outside of the housing body 21, depending on conditions. Specifically, the overflow valve 39 opens under specified conditions, such as when the temperature of the cooling water reaches a specified temperature or higher, allowing communication between the internal space 200 of the overflow port 224 and the outside of the housing body 21, i.e., the space inside the pipe section 511. When the temperature of the cooling water becomes lower than the specified temperature, the communication is disconnected.

[0690] like Figure 47 As shown, at least two of the three outlet ports (221-223) are configured such that the center of each opening is located on a straight line, namely the port arrangement line Lp1, on the pipe mounting surface 202. Here, the port arrangement line Lp1 is parallel to the mounting surface 201 and is located on the imaginary plane Vp5.

[0691] That is, at least two of the three outlet ports (221 to 223) are formed such that the centers of their respective openings are arranged in a straight line on the pipe mounting surface 202 in the direction of the rotation axis Axr1.

[0692] The overflow port 224 is formed such that the center of the opening is located away from the port arrangement line Lp1 on the opposite side of the mounting surface 201.

[0693] like Figure 42 As shown, in the direction of the rotation axis Axr1, the inlet port 220, the overflow port 224, and the intervalve space 400 overlap. Therefore, when the cooling water flowing in from the inlet port 220 is guided to the overflow port 224, the ball valves 41 and 42 can be prevented from becoming obstacles, and the temperature of the cooling water from the inlet port 220 can be smoothly transferred to the overflow valve 39, improving the responsiveness of the overflow valve 39.

[0694] Therefore, by arranging the three outlet ports (221 to 223) in a straight line, the volume of the housing body 21 can be reduced and an overflow port 224 can be formed in the housing body 21.

[0695] In addition, the overflow port 224 is formed on the housing body 21 in such a way that a portion of it is located between the outlet port 221 and the outlet port 222.

[0696] like Figure 47 As shown, a portion of the overflow port 224 is formed in the region formed by the two tangents connecting the outer edges of the outlet port 221 and the outer edges of the outlet port 222.

[0697] <5-6>

[0698] like Figure 47As shown, the three outlet ports (221 to 223) and the overflow port 224 are formed so as to partially overlap each other when viewed from the direction of the port arrangement straight line Lpl.

[0699] Therefore, the volume of the housing main body 21 in which the overflow port 224 is formed can be further reduced.

[0700] <5-7>

[0701] As shown, the overflow port 224 is formed so that the center of the opening is located on a straight line, i.e., an overflow arrangement straight line Lrl, on the pipe mounting surface 202 parallel to the port arrangement straight line Lpl. Here, the overflow arrangement straight line Lrl is located on the opposite side of the mounting surface 201 with respect to the port arrangement straight line Lpl. Figure 47

[0702] That is, the distance from the mounting surface 201 to the center of the overflow port 224 is greater than the distance from the mounting surface 201 to the center of each of the outlet ports 221, 222, and 223.

[0703] When viewed from the direction of the port arrangement straight line Lpl, the portion of at least two (221 to 223) of the three outlet ports (221 to 223) on the opposite side of the port arrangement straight line Lpl with respect to the overflow arrangement straight line Lrl and the portion of the overflow port 224 on the opposite side of the overflow arrangement straight line Lrl with respect to the port arrangement straight line Lpl are formed so as to partially overlap each other.

[0704] That is, when viewed from the direction of the rotation axis Axrl, the portion of at least two (221 to 223) of the three outlet ports (221 to 223) on the opposite side of the center with respect to the mounting surface 201 and the portion of the overflow port 224 on the opposite side of the center with respect to the mounting surface 201 overlap each other.

[0705] Further, when the centers of the three outlet ports form a triangle at the pipe mounting surface 202, the portion of the two outlet ports farther from the mounting surface 201 on the opposite side of the center with respect to the mounting surface 201 and the portion of the overflow port 224 on the opposite side of the center with respect to the mounting surface 201 overlap each other when viewed from the direction of the rotation axis Axrl.

[0706] Therefore, the volume of the housing main body 21 in which the overflow port 224 is formed can be further reduced.

[0707] <5-8>

[0708] As shown, the overflow port 224 is formed so that the center of the opening is located on a straight line, i.e., an overflow arrangement straight line Lrl, on the pipe mounting surface 202 parallel to the port arrangement straight line Lpl. Here, the overflow arrangement straight line Lrl is located on the opposite side of the mounting surface 201 with respect to the port arrangement straight line Lpl. Figure 47 ​As shown, at least two (261-263) of the plurality of housing-side connecting holes (261-266) are formed on a straight line Lh1, which is located on the overflow port 224 side relative to the port arrangement line Lp1. Here, the connecting hole arrangement line Lh1 is parallel to the port arrangement line Lp1 and the overflow configuration line Lr1, and is located on the opposite side of the port arrangement line Lp1 relative to the overflow configuration line Lr1.

[0709] like Figure 47 As shown, the overflow port 224 is formed to overlap a portion of the straight line Lh1 of the closely connected holes.

[0710] Therefore, the volume of the housing body 21 with the overflow port 224 can be further reduced.

[0711] <5-9>

[0712] like Figure 50 As shown, pipe sections 511 to 513 have a pipe section body 501 and a pipe section end 502. The pipe section end 502 is formed on the side of the pipe section body 501 opposite to the outlet ports 221 to 223 (pipe connection 52). Its inner diameter is larger than the inner diameter of the pipe section body 501, and its outer diameter is larger than the outer diameter of the pipe section body 501.

[0713] Therefore, when the tube end 502 is formed, for example, by forceful demolding, the mold can be easily pulled out while the tube end 502 is easily deformed inward, thus suppressing the rupture of the tube end 502. This, in turn, suppresses the leakage of cooling water from the tube end 502.

[0714] In addition, since the outer diameter of the tube end 502 is larger than the outer diameter of the tube body 501, it is possible to prevent the hose or the like connected to the tube end 502 from falling off.

[0715] like Figure 42 As shown, pipe portion 511 is formed extending from pipe mounting surface 202 to the side opposite to outlet port 221. Pipe portion 512 is formed extending from pipe mounting surface 202 to the side opposite to outlet port 222. Pipe portion 513 is formed by extending from pipe mounting surface 202 to the side opposite to outlet port 223, then bending and extending in a direction parallel to the rotation axis Axr1 to the side opposite to pipe portion 512.

[0716] The tube portion 513 is formed to be bent at a position corresponding to the center of the tube portion 512 in the axial direction. Therefore, a gap Sp1 is formed between the tube portion 512 on the tube mounting surface 202 side and the tube portion 513.

[0717] <5-10>

[0718] like Figure 50As shown, the tube sections 511 to 513 have tube protrusions 503 that protrude outward from the outer wall of the tube body 501.

[0719] The protrusion 503 in the tube section allows for easy determination of the fixed position of the hose relative to the tube sections 511-513, and also prevents the hose from penetrating too deeply into the tube sections 511-513.

[0720] <5-11>

[0721] like Figure 47 As shown, the tube protrusion 503 is formed on an imaginary plane Vp5 that is parallel to the mounting surface 201.

[0722] That is, such as Figure 47 As shown, when viewed axially from the outlet ports 221 to 223, the tube protrusions 503 are formed in a straight line along the direction of the rotation axis Axr1.

[0723] Therefore, the size of the pipe component 50 in the direction perpendicular to the mounting surface 201 can be reduced, and the volume of the valve device 10 can be reduced.

[0724] Additionally, there is one tube protrusion 503 for tube section 511. There are two tube protrusions 503 that sandwich tube section 512. There are two tube protrusions 503 that sandwich tube section 513 (see reference). Figure 50 ).

[0725] Since it is only necessary to limit the position of the end of the hose in the tube section 511, only one tube section protrusion 503 is formed in the tube section 511. By forming only one tube section protrusion 503 in the tube section 511, material costs can be reduced. Alternatively, in other embodiments, two tube section protrusions 503 may be formed in the tube section 511.

[0726] <5-12>

[0727] like Figure 50 As shown, the pipe component 50 has a plurality of pipe sections (511 to 514) and a pipe connecting portion 52 that connects the portions of the plurality of pipe sections (511 to 514) to the housing body 21 side.

[0728] Therefore, the number of components can be reduced, and by placing a gasket 509 between the pipe connection 52 and the housing body 21, the sealing between the pipe component 50 and the housing body 21 can be ensured.

[0729] like Figure 50As shown, the pipe connection portion 52 is formed on the sealing unit 35 side relative to the pipe protrusion 503 formed on the pipe portions 511-513. Furthermore, the outer edge of the pipe connection portion 52 is formed to extend radially outward toward the end of the pipe portion 511-514 toward the pipe mounting surface 202 side (see reference). Figure 47 , Figure 50 ).

[0730] <5-13>

[0731] like Figure 42 As shown, the housing 20 has a housing opening 210 connecting the internal space 200 to the outside of the housing body 21, and a cylindrical housing inner wall 211 that is connected at one end to the housing opening 210 to form the internal space 200. The valve 30 has a shaft 32 provided on the rotation axis Axr1.

[0732] The valve device 10 includes a partition wall portion 60, which has a partition wall body 61 provided in the housing opening 210 to separate the internal space 200 from the outside of the housing body 21, and a shaft insertion hole 62 formed in the partition wall body 61 to allow one end of the shaft 32 to be inserted.

[0733] The inner diameter of the housing opening 210 is larger than the inner diameter of the end of the housing inner wall 211 opposite to the housing opening 210.

[0734] Therefore, the flow area on the side of the housing opening 210 of the internal space 200 can be increased. As a result, the flow rate of cooling water flowing, especially toward the outlet port 221 (radiator 5) formed on the side of the housing opening 210, can be increased.

[0735] <5-13-1>

[0736] like Figure 42 As shown, an annular sealing member 600 is provided between the housing opening 210 and the partition wall body 61 of the partition wall 60, which is capable of keeping the housing opening 210 and the partition wall 60 liquid-tight.

[0737] Therefore, if the inner diameter of the housing opening 210 is made constant, a standard-shaped annular sealing component 600 with a constant inner and outer diameter can be used, thereby reducing costs.

[0738] <5-14>

[0739] like Figure 42 As shown, the inner wall 211 of the housing is formed in a conical shape so that the inner diameter decreases as it moves from the side of the housing opening 210 toward the side opposite to the housing opening 210.

[0740] Therefore, the flow area of ​​the internal space 200 can gradually increase towards the side of the shell opening 210. In addition, by not forming a step on the inner wall 211 of the shell, the water flow resistance in the internal space 200 can be reduced.

[0741] <5-15>

[0742] like Figure 47 As shown, at least two of the multiple ports (outlet ports 221 to 223) formed in the housing body 21 are arranged in a direction parallel to the mounting surface 201.

[0743] Therefore, the size of the housing body 21 in the direction perpendicular to the mounting surface 201 can be reduced, and the volume of the valve device 10 can be reduced.

[0744] <5-16>

[0745] like Figure 49 As shown, the tube fastening component 540 is a self-tapping screw that can be tapped and screwed into the fastening holes 261 to 266 on the housing side.

[0746] Therefore, it is not necessary to mold inserts such as metal parts with threaded grooves into the housing-side fixing portions 251-256. Furthermore, since a housing gap Sh1 is formed between the housing-side fixing portions 251-256 and the outer wall of the housing body 21, even if the housing-side fixing portions 251-256 break when the pipe fastening member 540 is screwed into the housing-side fastening holes 261-266, the breakage can be prevented from reaching the housing body 21.

[0747] <6-1> Partition wall through hole

[0748] like Figure 52 As shown, the partition wall portion 60 has a partition wall through hole 65 that extends outward from the shaft insertion hole 62 and opens on the outer wall of the partition wall portion body 61.

[0749] <6-1>

[0750] As described above, this embodiment is a valve device 10 capable of controlling the cooling water of the engine 2 of vehicle 1, comprising a housing 20, a valve 30, a partition 60, and a drive unit 70.

[0751] The housing 20 has: a housing body 21 forming an internal space 200 on the inside; ports (220, 221, 222, 223) connecting the internal space 200 to the outside of the housing body 21; and a housing opening 210 connecting the internal space 200 to the outside of the housing body 21.

[0752] The valve 30 has a valve body 31 that can rotate around a rotation axis Axr1 within an internal space 200, a valve body internal flow path 300 formed inside the valve body 31, a valve body opening (410, 420, 430) connecting the valve body internal flow path 300 to the outside of the valve body 31, and a shaft 32 provided on the rotation axis Axr1. The valve body 300 can change the communication state between the valve body internal flow path 300 and the port through the valve body opening according to the rotation position of the valve body 31.

[0753] The partition 60 has a partition body 61 provided in the housing opening 210 to separate the internal space 200 from the outside of the housing body 21, and a shaft insertion hole 62 formed in the partition body 61 to allow one end of the shaft 32 to be inserted.

[0754] The drive unit 70 is located on the opposite side of the internal space 200 relative to the partition wall 60, and can rotate the valve body 31 via one end of the shaft 32.

[0755] The partition wall portion 60 has a partition wall through hole 65 that extends outward from the shaft insertion hole 62 and opens into the outer wall of the partition wall portion body 61.

[0756] Therefore, cooling water flowing from the internal space 200 through the shaft insertion hole 62 toward the drive unit 70 can flow into the partition wall through hole 65. This prevents the cooling water in the internal space 200 from flowing toward the drive unit 70.

[0757] <6-1-1>

[0758] The through hole 65 of the partition wall is formed such that the cross-sectional shape perpendicular to the axis is oblong or rectangular.

[0759] Therefore, the volume of the partition body 61 can be reduced, and the influence of the surface tension of the partition through hole 65 can be suppressed, making it easier for cooling water to flow in the partition through hole 65.

[0760] Furthermore, the partition wall through hole 65 is formed such that the shorter direction of its cross-section is parallel to the axis Axh1 of the shaft insertion hole 62. Therefore, the volume of the partition wall body 61 in the axis Axh1 direction can be reduced.

[0761] <6-2>

[0762] like Figure 52 As shown, the housing 20 has a housing through hole 270 that extends outward from the inner wall of the housing opening 210 and opens on the outer wall of the housing body 21, and is able to communicate with the partition through hole 65. In addition, the housing through hole 270 opens on the end face of the housing body 21 opposite to the tube mounting surface 202.

[0763] Therefore, cooling water flowing into the partition wall through-hole 65 can be discharged to the outside through the housing through-hole 270. Furthermore, the dual structure of the partition wall through-hole 65 and the housing through-hole 270 can suppress the intrusion of water from the outside.

[0764] Here, when a large amount of cooling water flows from the internal space 200 to the drive unit 70, the cooling water can be discharged to the outside through the partition wall through hole 65 and the housing through hole 270, making the user aware of the cooling water leakage in the shaft insertion hole 62. This allows the user to address any leaks that require attention.

[0765] On the other hand, when the amount of cooling water flowing from the internal space 200 to the drive unit 70 is small, the cooling water can be accumulated in the partition wall through hole 65 and the housing through hole 270, so that the user will not notice the leakage of cooling water in the shaft insertion hole 62. Thus, leakage can be suppressed so that the user can deal with leaks that do not need to be dealt with.

[0766] <6-2-1>

[0767] The through hole 270 of the housing is formed such that the cross-sectional shape perpendicular to the axis is oblong or rectangular.

[0768] Therefore, the volume of the housing body 21 can be reduced, and the influence of the surface tension of the housing through hole 270 can be suppressed, making it easier for cooling water to flow in the housing through hole 270.

[0769] Furthermore, the through hole 270 in the housing is formed such that the shorter direction of its cross-section is parallel to the axis Axh1 of the shaft insertion hole 62. Therefore, the volume of the housing body 21 in the axis Axh1 direction can be reduced.

[0770] <6-2-2>

[0771] like Figure 52 As shown, the partition wall through hole 65 and the housing through hole 270 are formed coaxially.

[0772] Therefore, the cooling water flowing into the partition through-hole 65 can be easily discharged to the outside through the housing through-hole 270.

[0773] <6-3>

[0774] like Figure 52 As shown, the valve device 10 includes a shaft sealing component 603 and an annular sealing component 600. The shaft sealing component 603 is formed into an annular shape, mainly from an elastic component such as rubber, and is disposed on the internal space 200 side relative to the partition wall through hole 65 between the shaft 32 and the shaft insertion hole 62, which can maintain the shaft 32 and the shaft insertion hole 62 as liquid-tight.

[0775] The annular sealing member 600 is formed into a ring shape from an elastic component such as rubber. It is disposed on the internal space 200 side relative to the housing through hole 270 between the inner wall of the partition wall body 61 and the inner wall of the housing opening 210, and is capable of maintaining a liquid-tight seal between the partition wall body 61 and the inner wall of the housing opening 210. Here, the shaft sealing member 603 and the annular sealing member 600 correspond to "first sealing member" and "second sealing member," respectively.

[0776] Therefore, the shaft seal member 603 can prevent cooling water from leaking from the internal space 200 to the drive unit 70 side through the shaft insertion hole 62. In addition, the annular seal member 600 can prevent cooling water from leaking from the internal space 200 to the outside through the space between the partition wall body 61 and the housing opening 210.

[0777] Furthermore, since the shaft seal component 603 is positioned at a predetermined distance from the partition wall through hole 65 toward the inner space 200, a space can be formed between the partition wall through hole 65 and the shaft seal component 603. Therefore, in the case of minimal cooling water leakage, cooling water can accumulate in this space without the user noticing.

[0778] Furthermore, since the annular sealing member 600 is positioned at a predetermined distance from the housing through-hole 270 toward the internal space 200, a space can be formed between the housing through-hole 270 and the annular sealing member 600. Therefore, in the case of minimal cooling water leakage, cooling water can accumulate in this space without the user noticing.

[0779] <6-4>

[0780] like Figure 52 As shown, the distance Ds1 between the shaft seal component 603 and the partition wall through hole 65 is shorter than the distance Ds2 between the annular seal component 600 and the housing through hole 270.

[0781] Therefore, the space formed between the housing through-hole 270 and the annular sealing member 600 can be larger than the space formed between the partition wall through-hole 65 and the shaft sealing member 603. As a result, more cooling water can be accumulated in the space formed between the housing through-hole 270 and the annular sealing member 600.

[0782] <6-5>

[0783] like Figure 52 As shown, the partition wall portion 60 has an inner stepped surface 661 that forms a step between the partition wall through hole 65 in the shaft insertion hole 62 and the shaft seal member 603. Here, the inner stepped surface 661 is formed in an annular planar shape facing the internal space 200. The shaft seal member 603 is provided to abut against the inner stepped surface 661.

[0784] The housing 20 has a housing step surface 281 that forms a step between the housing through-hole 270 of the inner wall of the housing opening portion 210 and the annular seal member 600. Here, the housing step surface 281 is formed annularly toward the drive portion 70 side.

[0785] Therefore, in the case where the leakage of the cooling water is less, by accumulating the cooling water to the partition wall inside step surface 661, the housing step surface 281, it is possible to make the user not to notice the small amount of leakage.

[0786] Further, even if water or the like intrudes from the outside via the housing through-hole 270, by accumulating the water or the like to the partition wall inside step surface 661, the housing step surface 281, it is possible to suppress the water or the like from flowing to the shaft seal member 603, the annular seal member 600.

[0787] <6-6>

[0788] As shown in Figure 52 , the housing step surface 281 is formed conically, and the inner diameter becomes larger toward the drive portion 70 side from the inside space 200 side.

[0789] Therefore, it is possible to increase the space formed between the housing through-hole 270 and the annular seal member 600, and it is possible to accumulate more cooling water in this space.

[0790] In addition, the housing 20 has a housing step surface 282 that forms a step on the drive portion 70 side of the housing through-hole 270 of the inner wall of the housing opening portion 210. The housing step surface 282 is formed annularly toward the drive portion 70 side.

[0791] Further, the partition wall portion 60 has a partition wall outside step surface 671 that forms a step on the drive portion 70 side of the partition wall through-hole 65 of the outer wall of the partition wall portion main body 61. The partition wall outside step surface 671 is formed annularly toward the inside space 200 and the housing step surfaces 281, 282.

[0792] As shown in Figure 52 , between the outer wall of the partition wall portion main body 61 and the inner wall of the housing opening portion 210, between the housing step surface 281 and the partition wall outside step surface 671, a substantially cylindrical cylindrical space St1 is formed. The partition wall through-hole 65 and the housing through-hole 270 communicate via the cylindrical space St1.

[0793] In the case where the leakage of the cooling water is less, it is possible to accumulate the cooling water in the cylindrical space St1.

[0794] As shown in Figure 52As shown, the housing step face 281, the housing through-hole 270, and the housing step face 282 are formed in this order from the inside space 200 side toward the drive portion 70 side in the housing opening portion 210. The annular seal member 600 is positioned toward the inside space 200 side with respect to the housing step face 281.

[0795] As shown in FIG. 6, the housing 20 is provided with the housing opening portion 210, which is formed in the housing main body 21. The housing opening portion 210 is formed in the housing main body 21 so as to be open in the direction of the axis of the shaft 32. Figure 52 As shown, the inner edge portion of the end portion of the partition wall through-hole 65 on the side opposite the shaft 32 is chamfered in a tapered shape. Thereby, the cooling water on the inside of the partition wall through-hole 65 can be easily discharged.

[0796] <6-8>

[0797] As shown in FIG. 6, the housing 20 is provided with the housing opening portion 210, which is formed in the housing main body 21. The housing opening portion 210 is formed in the housing main body 21 so as to be open in the direction of the axis of the shaft 32. Figure 52

[0798] Therefore, in the case where the leakage of cooling water is large, the cooling water can be caused to flow rapidly toward the partition wall through-hole 65.

[0799] <6-9>

[0800] As shown in FIG. 6, the housing 20 is provided with the housing opening portion 210, which is formed in the housing main body 21. The housing opening portion 210 is formed in the housing main body 21 so as to be open in the direction of the axis of the shaft 32. Figure 52

[0801] Therefore, in the case where the leakage of cooling water is large, the cooling water can be caused to flow rapidly toward the partition wall through-hole 65.

[0802] <6-10>

[0803] As shown in FIG. 6, the housing 20 is provided with the housing opening portion 210, which is formed in the housing main body 21. The housing opening portion 210 is formed in the housing main body 21 so as to be open in the direction of the axis of the shaft 32. Figure 52 Therefore, even if the housing main body 21 and the partition wall portion 60 are misaligned, the communication of the partition wall through-hole 65 and the housing through-hole 270 can be ensured. Further, since the cross-sectional area of the housing through-hole 270 is larger than the cross-sectional area of the partition wall through-hole 65, the cooling water can be rapidly discharged from the housing through-hole 270 to the outside. Further, the intrusion of water or the like from the outside through the housing through-hole 270 and the partition wall through-hole 65 toward the shaft insertion hole 62 side can be suppressed.

[0804] <6-18>

[0805] As shown in FIG. 6, the housing 20 is provided with the housing opening portion 210, which is formed in the housing main body 21. The housing opening portion 210 is formed in the housing main body 21 so as to be open in the direction of the axis of the shaft 32.

[0806] Figure 52

[0807] ​​​​Therefore, in a case where leakage of the cooling water is large, the cooling water can be caused to flow rapidly to the partition wall through hole 65.

[0808] <6-19>

[0809] As shown in FIG. 20, in a state where the case 20 is mounted to the engine 2, the case through hole 270 is located on the lower side of the shaft 32. Figure 52

[0810] Therefore, in a case where leakage of the cooling water is large, the cooling water can be caused to flow rapidly to the partition wall through hole 65.

[0811] Here, the lower side of the shaft 32, for example, is the lower side than the horizontal plane including the axis Axs1 of the shaft 32, and refers to not only the directly below of the vertical direction of the shaft 32 but also a prescribed range on the lower side of the shaft 32.

[0812] <6-20>

[0813] If the directly below of the axis Axs1 of the shaft 32 is set to 0 degrees, the partition wall through hole 65 is formed in a range of 0 to 80 degrees in the circumferential direction of the shaft 32. In the present embodiment, the partition wall through hole 65 is formed so as to extend in the direction of 0 degrees from the shaft 32 side. Therefore, in a case where leakage of the cooling water is large, the cooling water can be caused to flow rapidly to the partition wall through hole 65.

[0814] Further, the partition wall through hole 65 can also be formed in a range of 30 to 80 degrees in the circumferential direction of the shaft 32. In this case, the angle of the partition wall through hole 65 becomes gentle to some extent, and the cooling water can be caused to flow like seepage. Therefore, even in a case where a problem occurs due to an unexpected leakage of the cooling water, it is possible to avoid a situation where a user reacts sensitively to an abnormality more than necessary.

[0815] <6-21>

[0816] If the directly below of the axis Axs1 of the shaft 32 is set to 0 degrees, the case through hole 270 is formed in a range of 0 to 80 degrees in the circumferential direction of the shaft 32. In the present embodiment, the case through hole 270 is formed so as to extend in the direction of 0 degrees from the shaft 32 side. Therefore, in a case where leakage of the cooling water is large, the cooling water can be caused to flow rapidly to the partition wall through hole 65.

[0817] Further, the case through hole 270, like the partition wall through hole 65, can also be formed in a range of 30 to 80 degrees in the circumferential direction of the shaft 32. In this case, the angle of the case through hole 270 becomes gentle to some extent, and the cooling water can be caused to flow like seepage. Therefore, even in a case where a problem occurs due to an unexpected leakage of the cooling water, it is possible to avoid a situation where a user reacts sensitively to an abnormality more than necessary.

[0818] ​(7th embodiment)

[0819] In Figure 53 part of the valve device of the 7th embodiment is shown.

[0820] <6-5>

[0821] As Figure 53 shown, the partition wall portion 60 has a partition wall inner step surface 662 that forms a step between the partition wall through-hole 65 of the shaft insertion hole 62 and the shaft seal member 603. Here, the partition wall inner step surface 662 is formed as a ring-shaped planar surface toward the inside space 200 side. The partition wall inner step surface 662 is formed on the partition wall through-hole 65 side with respect to the partition wall inner step surface 661.

[0822] Accordingly, a space can be formed between the partition wall inner step surface 662 and the shaft seal member 603. Thus, in the case where leakage of the cooling water is less, by accumulating the cooling water in this space, it is possible to make the user not notice the small amount of leakage.

[0823] Further, even if water or the like intrudes from the outside via the housing through-hole 270, by accumulating the water or the like in this space, it is possible to suppress the water or the like from flowing to the shaft seal member 603.

[0824] The housing step surface 281 is formed as a ring shape toward the inside space 200 side. The partition wall outer step surface 671 is formed as a ring shape toward the drive portion 70 and the housing step surface 281 side between the housing step surface 281 and the ring-shaped seal member 600. Here, the partition wall outer step surface 671 and the housing step surface 281 are opposed and separated by a prescribed distance. Accordingly, between the outer wall of the partition wall portion main body 61 and the inner wall of the housing opening portion 210, a labyrinth-shaped passage P1 is formed between the ring-shaped seal member 600 and the housing through-hole 270.

[0825] Accordingly, even if water or the like intrudes from the outside via the housing through-hole 270, by accumulating the water or the like in the passage P1, it is possible to suppress the water or the like from flowing to the ring-shaped seal member 600.

[0826] As Figure 53 shown, in the radial direction of the housing opening portion 210, the height Hp1 of the portion of the labyrinth-shaped passage P1 on the drive portion 70 side is smaller than the height Hp2 of the portion of the passage P1 on the inside space 200 side. Accordingly, from the housing through-hole 270 side, the passage P1 changes from a narrower portion to a wider portion. Accordingly, by the narrower portion of the passage P1, it is difficult for water to flow from the housing through-hole 270 side to the ring-shaped seal member 600 side. Further, by the narrower portion of the passage P1, it is difficult for water to flow from the inside space 200 side to the housing through-hole 270 side.

[0827] (8th embodiment)

[0828] In Figure 54 Fig. 8, a part of the valve device of the 8th embodiment is shown. The position of the housing through-hole 270 and the like in the 8th embodiment is different from that in the 6th embodiment.

[0829] <6-11>

[0830] As Figure 54 shown, the positions of the shafts of the partition wall through-hole 65 and the housing through-hole 270 upward of the shaft (Axh1) of the shaft rod insertion hole 62 are different from each other. Here, the housing through-hole 270 is formed on the drive portion 70 side with respect to the partition wall through-hole 65.

[0831] Therefore, even if water or the like intrudes from the outside via the housing through-hole 270, the flow of water or the like via the partition wall through-hole 65 to the shaft rod insertion hole 62 side can be suppressed.

[0832] <6-11-1>

[0833] As Figure 54 shown, if the distance between the shaft of the partition wall through-hole 65 and the shaft of the housing through-hole 270 is set to L, and the size of the housing through-hole 270 upward of the shaft (Axh1) of the shaft rod insertion hole 62 is set to D, the partition wall through-hole 65 and the housing through-hole 270 are formed so as to satisfy the relation of D≦L≦10D.

[0834] Therefore, even if water or the like intrudes from the outside via the housing through-hole 270, the flow of water or the like via the partition wall through-hole 65 to the shaft rod insertion hole 62 side can be more effectively suppressed.

[0835] <6-12>

[0836] As Figure 54 shown, the partition wall portion 60 has a partition wall outer step surface 671 formed with a step between the partition wall through-hole 65 and the housing through-hole 270 of the outer wall of the partition wall portion main body 61.

[0837] Therefore, even if water or the like intrudes from the outside via the housing through-hole 270, by accumulating water or the like on the partition wall outer step surface 671, the flow of water or the like via the partition wall through-hole 65 to the shaft rod insertion hole 62 side can be suppressed.

[0838] As Figure 54 shown, the housing through-hole 270 is formed on the drive portion 70 side with respect to the housing step surface 282 and the partition wall outer step surface 671. Here, the partition wall outer step surface 671 and the housing step surface 282 are opposed to each other and apart by a prescribed distance. Therefore, between the outer wall of the partition wall portion main body 61 and the inner wall of the housing opening portion 210, a labyrinth-like passage P2 is formed between the housing through-hole 270 and the partition wall through-hole 65.

[0839] Therefore, even if water or the like intrudes from the outside via the housing through-hole 270, by accumulating water or the like in the passage P2, it is possible to suppress the water or the like from flowing to the shaft rod insertion hole 62 side via the partition wall through-hole 65.

[0840] As shown in Figure 54 , in the radial direction of the housing opening portion 210, the height Hp1 of the portion of the labyrinth-like passage P2 on the drive portion 70 side is smaller than the height Hp2 of the portion of the passage P2 on the inside space 200 side. Therefore, from the housing through-hole 270 side, the passage P2 changes from a narrower portion to a wider portion. Therefore, by the narrower portion of the passage P2, water is difficult to flow from the housing through-hole 270 side to the partition wall through-hole 65 side. Further, by the narrower portion of the passage P2, water is difficult to flow from the partition wall through-hole 65 side to the housing through-hole 270 side.

[0841] In other embodiments, in the radial direction of the housing opening portion 210, the height Hp1 of the portion of the labyrinth-like passage P2 on the drive portion 70 side can also be larger than the height Hp2 of the portion of the passage P2 on the inside space 200 side. In this case, from the housing through-hole 270 side, the passage P2 changes from a wider portion to a narrower portion. Therefore, water that intrudes from the outside of the housing through-hole 270 is captured at the narrower portion of the passage P2 and is difficult to flow to the partition wall through-hole 65 side. On the other hand, water on the partition wall through-hole 65 side easily flows to the housing through-hole 270 side via the passage P2.

[0842] (9th Embodiment)

[0843] A portion of the valve device of the 9th embodiment is shown in Figure 55 .

[0844] <6-13>

[0845] As shown in Figure 55 , the valve device 10 is provided with a bearing portion 602. The bearing portion 602 is provided on the drive portion 70 side with respect to the partition wall through-hole 65 of the shaft rod insertion hole 62, and shaft supports one end of the shaft rod 32.

[0846] Therefore, by causing cooling water that flows from the inside space 200 to the drive portion 70 side to flow to the partition wall through-hole 65, it is possible to suppress the cooling water from flowing to the bearing portion 602.

[0847] <6-14>

[0848] As shown in Figure 55 , the shaft rod insertion hole 62 has a small-diameter portion 621 in which the bearing portion 602 is provided on the inside, a large-diameter portion 622 in which the inside diameter is larger than that of the small-diameter portion 621 and in which the partition wall through-hole 65 is provided, and an insertion hole step surface 623 that is formed between the small-diameter portion 621 and the large-diameter portion 622.

[0849] The step surface 623 in the through hole is formed annularly toward the inside space 200 side. As shown in Figure 55 A substantially cylindrical cylindrical space St2 is formed between the shaft seal member 603 and the bearing portion 602 on the radially outer side of the shaft 32. The partition wall through hole 65 is connected to the cylindrical space St2.

[0850] Therefore, by storing the cooling water flowing from the inside space 200 toward the drive portion 70 side in the cylindrical space St2, it is possible to suppress the cooling water from flowing to the bearing portion 602. Further, even if water or the like intrudes from the outside via the housing through hole 270, by storing the water or the like in the cylindrical space St2, it is possible to suppress the water or the like from flowing to the bearing portion 602.

[0851] (10th Embodiment)

[0852] A portion of the valve device of the 10th embodiment is shown in Figure 56 , Figure 57

[0853] <6-15>

[0854] As shown in Figure 56 ,in the partition wall through hole 65, a partition wall through hole step surface 651 is formed that forms a step between one end and the other end of the partition wall through hole 65. Figure 57

[0855] The partition wall through hole step surface 651 is formed to face toward the vertically downward side in a state in which the valve device 10 is mounted to the engine 2. Due to this, the cross-sectional area of the vertically downward side of the partition wall through hole 65 is larger than the cross-sectional area of the vertically upward side.

[0856] Therefore, even if water or the like intrudes from the outside via the housing through hole 270, by storing the water or the like in the partition wall through hole step surface 651, it is possible to suppress the water or the like from flowing to the shaft through hole 62.

[0857] (11th Embodiment)

[0858] A portion of the valve device of the 11th embodiment is shown in Figure 58 ,

[0859] <6-15>

[0860] As shown in Figure 58 , the partition wall through hole step surface 651 is formed to face toward the vertically upward side in a state in which the valve device 10 is mounted to the engine 2. Due to this, the cross-sectional area of the vertically upward side of the partition wall through hole 65 is larger than the cross-sectional area of the vertically downward side.

[0861] ​Therefore, in a case where leakage of the cooling water is less, by storing the cooling water to the stepped surface 651 in the partition wall through-hole, the user can not notice the small amount of leakage.

[0862] (12th Embodiment)

[0863] In Figure 59 , a part of the valve device of the 12th embodiment is shown.

[0864] <6-16>

[0865] As Figure 59 shown, the partition wall through-hole 65 and the housing through-hole 270 are formed so that the respective axes are not orthogonal with respect to the axis Axh1 of the shaft insertion hole 62.

[0866] Therefore, even if water or the like intrudes from the outside via the housing through-hole 270, it is possible to suppress the water or the like from flowing to the shaft insertion hole 62 via the partition wall through-hole 65.

[0867] In addition, the partition wall through-hole 65 and the housing through-hole 270 are formed so that the axes thereof intersect each other.

[0868] (13th Embodiment)

[0869] In Figure 60 , a part of the valve device of the 13th embodiment is shown.

[0870] <6-17>

[0871] As Figure 60 shown, the partition wall through-hole 65 is formed so that the cross-sectional area gradually increases as it goes from the radially inner side of the shaft insertion hole 62 toward the radially outer side.

[0872] Therefore, in a case where leakage of the cooling water is more, it is possible to rapidly discharge the cooling water from the housing through-hole 270 to the outside via the partition wall through-hole 65.

[0873] (14th Embodiment)

[0874] In Figures 61-77 , a valve device of the 14th embodiment is shown.

[0875] The shapes and the like of the housing 20, the valve 30, the pipe member 50, the drive section cover 80, and the like in the present embodiment are different from those of the first embodiment.

[0876] As Figure 61 shown, the valve device 10 of the present embodiment is disposed in a narrow space Al so that the drive section cover 80 is on the vertically downward side with respect to the housing main body 21, and the mounting surface 201 opposes the engine 2.

[0877] As Figure 65As shown, when viewed from a direction perpendicular to the mounting surface 201, the base of one side h11 of the two sides (h11, h12) of the approximately triangular connecting portion 231 is formed at a position overlapping with the inlet port 220 when viewed in the longer direction of the housing body 21. Furthermore, the base of one side h21 of the two sides (h21, h22) of the connecting portion 232 is formed at a position overlapping with the inlet port 220 when viewed in the longer direction of the housing body 21.

[0878] That is, one of the starting positions of the connecting portions (231, 232) of the two closest connecting holes (241, 242) to the inlet port 220 is formed at a position overlapping with the inlet port 220 when viewed in the longer direction of the housing body 21.

[0879] Therefore, the housing body 21 can be stably fixed to the engine 2.

[0880] The base of one of the two sides (h31, h32) of the connecting portion 233 is formed in a position that does not overlap with the inlet port 220 when viewed in the longer direction of the housing body 21.

[0881] That is, one of the starting positions of the connecting portion (233) of the connecting hole (243) furthest from the inlet port 220 is formed in a position that does not overlap with the inlet port 220 when viewed in the longer direction of the housing body 21.

[0882] like Figure 65 As shown, within the region R1 enclosed by the straight lines Lth11 and Lth12 along the two sides (h11 and h12) of the connecting part 231, there are connecting holes (242 and 243) of two other connecting parts (232 and 233).

[0883] like Figure 65 As shown, the straight line along edge h11 of the connecting part 231 (i.e., edge line Lth11), the straight line along edge h21 of the connecting part 232 (i.e., edge line Lth21), and the straight line along edge h32 of the connecting part 233 (i.e., edge line Lth32) intersect with the entrance port 220.

[0884] That is, in each of the connecting holes 241 to 243, if the edges h11, h21, and h32 of the connecting portions 231 to 233 are extended, they will intersect with the inlet port 220.

[0885] like Figure 65 As shown, the side h32 of the connecting portion 233 of the connecting portion 243 furthest from the inlet port 220 on the side of the inlet port 220 has the smallest tilt angle relative to the longer direction of the housing body 21 compared with the other sides (h11, h12, h21, h22, h31).

[0886] As Figure 65 illustrated, the positioning portion 205 is formed on an extension line of the edge h12 of the close-joining portion 231. Further, the positioning portion 206 is formed on an extension line of the edge h22 of the close-joining portion 232.

[0887] That is, the positioning portions (205, 206) by which the positioning of the case main body 21 is enabled by being engaged with other components are formed on the extension lines of the edges (h12, h22) of the close-joining portions (231, 232).

[0888] <2-12>

[0889] As Figures 79-82 illustrated, the holding member 73 has one snap-fit portion 731. As Figure 79 , Figure 80 illustrated, the holding member 73 is formed such that the snap-fit portion 731 is located radially outward of the worm wheel 712.

[0890] Therefore, compared with the holding member 73 (refer to Figures 87-89 ) of the first embodiment in which two snap-fit portions 731 are formed on each of the two sides of the motor main body 710, it is possible to reduce the volume of the holding member 73 in the direction perpendicular to the shaft Axm1 of the motor 71, that is, the direction Dv1 perpendicular to the mounting surface 201. Therefore, it is possible to reduce the volume of the drive portion cover 80 and the valve device 10 in the direction Dv1 perpendicular to the mounting surface 201.

[0891] Further, compared with the first embodiment (refer to Figure 87 ), since it is possible to bring the motor 71 close to the mounting surface 201, that is, the engine 2, the vibration acting on the motor 71 is reduced, and it is possible to improve the robustness against disconnection.

[0892] As Figures 61-65 illustrated, the tube portion 512 of the tube member 50 is formed so as to be inclined toward the drive portion cover 80 and extend.

[0893] <2-13>

[0894] As Figure 67 illustrated, the holding member 73 is formed such that the snap-fit portion 731 is located on the tube member 50 side with respect to the rotation axis Axr1.

[0895] Therefore, it is possible to reduce the volume of the drive portion cover 80 in the direction Dv1 perpendicular to the mounting surface 201, and it is possible to suppress interference of the drive portion cover 80 with the tube member 50, particularly, the tube portion 512.

[0896] In other embodiments, the snap-fit portion 731 can also be formed between the third gear 723 and the motor-side terminal 713 (refer to Figure 80 , Figure 83 ).

[0897] In this case, the retaining member 73 of the first embodiment, which has two snap-fit ​​parts 731 formed on each side of the motor body 710 (see also...) Figures 87-89 Compared to the previous method, the volume of the retaining member 73 on the direction perpendicular to the shaft Axm1 of the motor 71, i.e., the direction perpendicular to the mounting surface 201, can be reduced.

[0898] exist Figures 90-102 The text indicates the valve 30 and a portion thereof in this embodiment.

[0899] The shape of the valve body 31 of the valve 30 in this embodiment is similar to that of the valve 30 in the first and third embodiments. The arrangement direction of the ball valve 41, cylindrical connecting portion 44, ball valve 42, cylindrical valve connecting portion 45, and ball valve 43 in the valve 30 of this embodiment is different from that in the third embodiment, but the same as in the first embodiment. That is, the valve 30 of this embodiment has the ball valve 41, cylindrical connecting portion 44, ball valve 42, cylindrical valve connecting portion 45, and ball valve 43 arranged sequentially from the side opposite to the drive portion 70 in the direction of the rotation axis Axr1 toward the drive portion 70. The ball valves 41, 42, and 43 are respectively configured to open and close the outlet ports 221, 222, and 223 (see reference). Figure 67 ).

[0900] like Figure 93 , Figure 94 As shown, the valve body opening 410 of the ball valve 41 has a large opening 412 and an extended opening 413. The large opening 412 is formed such that it extends from one end of the first partition 33 in the circumferential direction toward the other end. The extended opening 413 is formed such that it extends from the other end of the large opening 412 to near the other end of the first partition 33 in the circumferential direction. The size of the extended opening 413 in the direction of the rotation axis Axr1 is smaller than the size of the large opening 412 in the direction of the rotation axis Axr1. The opening area of ​​the valve body opening 410 is the area of ​​the combined opening areas of the large opening 412 and the extended opening 413.

[0901] Because the valve body opening 410 has an extended opening 413, the flow rate of cooling water to the radiator 5 can gradually increase during the initial opening of the outlet port 221. This helps to suppress rapid temperature changes in the cooling water caused by heat exchange in the radiator 5.

[0902] In this embodiment, only the valve body opening 410 has an extended opening 413. In contrast, in other embodiments, the same opening as the extended opening 413 may also be provided at the valve body openings 420 and 430. In this case, it is possible to suppress rapid temperature changes in the cooling water caused by heat exchange between the heater 6 and the device 7.

[0903] <3-29>

[0904] The size of the valve body opening 410 of the ball valve 41, which is the first ball valve, is larger than the size of the valve body opening 420 of the ball valve 42, which is the second ball valve, and the size of the valve body opening 430 of the ball valve 43, which is the third ball valve.

[0905] That is, the valve body openings 420 and 430 of ball valves 42 and 43, which are formed by two ball valves in succession, are smaller, while the valve body opening 410 of ball valve 41, which is formed as a single ball valve, is the largest.

[0906] Cooling water from inlet port 220 flows into the intervalve space 400 between ball valves 42, 43 and ball valve 41. The cooling water is then distributed to the sides of ball valves 42, 43 and ball valve 41. Here, if the amount of cooling water required on the sides of ball valves 42, 43 and ball valve 41 is uneven, proper distribution of cooling water cannot be achieved. Therefore, ball valve 41, which has the largest valve body opening 410, requires more cooling water and is not continuous with other ball valves 42, 43, which have smaller valve body openings 420, 430. That is, if the two ball valves were continuous, the amount of cooling water required for both ball valve openings would be needed; therefore, the smaller opening ball valves (42, 43) are made as continuous as possible.

[0907] <4-4>

[0908] like Figure 62 As shown, the housing 20 has a housing side cover fixing part (291-296) formed as a different part from the housing body 21, protruding from the outer wall of the housing body 21.

[0909] The drive unit cover 80 has a cover body 81 that forms the drive unit space 800, and a cover fixing part (821-826) that is formed at a different part from the cover body 81 and is fixed to the cover fixing part (291-296) on the housing side.

[0910] The cover fixing portions (821-826) are formed such that at least one of the two ends (215, 216) of the housing body 21 in the direction parallel to the mounting surface 201 does not protrude outward. In this embodiment, the cover fixing portions (821-826) are formed such that at least one of the two ends (215, 216) of the housing body 21 in the direction parallel to the mounting surface 201 does not protrude outward. Here, the two ends of the housing body 21 in the direction parallel to the mounting surface 201, namely the housing ends 215, 216, are formed on the housing body 21 as different parts from the housing side cover fixing portions 291-296.

[0911] Therefore, the volume of the drive unit cover 80 in the direction parallel to the mounting surface 201, Dp1, can be reduced, and the volume of the valve device 10 in the direction parallel to the mounting surface 201, Dp1, can also be reduced. As a result, the valve device 10 can be mounted in the confined space A1 of the vehicle 1.

[0912] In this embodiment, the direction Dp1 parallel to the mounting surface 201 is a direction perpendicular to the vertical direction, that is, a direction parallel to the horizontal direction. Furthermore, the direction Dp1 parallel to the mounting surface 201 is perpendicular to the direction Dv1 perpendicular to the mounting surface 201.

[0913] <4-5>

[0914] like Figure 62 As shown, with the housing body 21 mounted on the engine 2, the cover fixing portions 821-826 are formed such that they do not protrude outward from at least one of the two ends (215, 216) of the housing body 21 in the horizontal direction parallel to the mounting surface 201 (Dp1). In this embodiment, the cover fixing portions 821-826 are formed such that they do not protrude outward from the two ends (215, 216) of the housing body 21 in the horizontal direction parallel to the mounting surface 201 (Dp1). That is, the cover fixing portions 821-826 are formed such that, compared to the housing ends 215, 216, they do not protrude in the direction Dp1, which is the thinnest direction of the housing body 21 and parallel to the mounting surface 201.

[0915] Therefore, the volume of the drive unit cover 80 in the horizontal direction parallel to the mounting surface 201 (Dp1) can be reduced, and the volume of the valve device 10 in the horizontal direction parallel to the mounting surface 201 (Dp1) can also be reduced. As a result, the valve device 10 can be mounted in a narrow space A1 in the horizontal direction parallel to the mounting surface 201 (Dp1).

[0916] In this embodiment, the valve device 10 is disposed in the narrow space A1 (see reference) between the alternator 12 and the intake manifold 11. Figure 2 , Figure 62Therefore, by reducing the volume of the valve device 10 in the direction Dp1 parallel to the mounting surface 201, the valve device 10 can be disposed in the narrow space Al without interfering with the alternator 12 and the intake manifold 11.

[0917] <7-1> Housing side cover fixing portion

[0918] The present embodiment is a valve device 10 capable of controlling cooling water of an engine 2 of a vehicle 1, and includes a housing 20, a valve 30, a pipe member 50, a partition wall portion 60, a drive portion cover 80, a drive portion 70, and a fixing member 830.

[0919] As shown in Figure 61 , Figure 62 , Figures 64-68 , Figures 73-78 The housing 20 includes a housing main body 21 that forms an internal space 200 on the inside, ports (220, 221, 222, 223, 224) that connect the internal space 200 with the outside of the housing main body 21, housing side cover fixing portions 291 to 296 that are formed as different portions from the housing main body 21 in a manner protruding from the outer wall of the housing main body 21, and housing side cover fastening holes 290 formed in the housing side cover fixing portions 291 to 296.

[0920] The valve 30 includes a valve body 31 that is rotatable in the internal space 200 about a rotation axis Axr1, and a shaft 32 provided to the rotation axis Axr1, and is capable of opening and closing the ports (221, 222, 223) in accordance with the rotation position of the valve body 31.

[0921] The pipe member 50 includes cylindrical pipe portions (511, 512, 513, 514) that are installed to the housing main body 21 and that have an internal space that communicates with the ports (221, 222, 223, 224).

[0922] The partition wall portion 60 is provided to partition the internal space 200 from the outside of the housing main body 21, and includes a shaft insertion hole 62 that is formed so as to allow one end of the shaft 32 to be inserted therethrough.

[0923] The drive portion cover 80 is provided on the opposite side from the internal space 200 with respect to the partition wall portion 60, and includes a cover main body 81 that forms a drive portion space 800 with the partition wall portion 60, cover fixing portions 821 to 826 that are formed as different portions from the cover main body 81 in a manner protruding from the outer wall of the cover main body 81, and cover fastening holes 831 to 836 formed in the cover fixing portions 821 to 826.

[0924] The drive portion 70 is provided in the drive portion space 800, and is capable of rotationally driving the valve body 31 via one end of the shaft 32.

[0925] The fixing component 830 passes through the cover fastening holes 831-836 and is screwed into the cover fastening hole 290 on the housing side, thereby fixing the cover fixing part 821-826 to the housing side cover fixing part 291-296.

[0926] The housing side cover fixing portions 291 to 296 have a cover fixing base 298 protruding from the outer wall of the housing body 21, and a cover fixing protrusion 299 protruding from the cover fixing base 298 toward the cover fixing portions 821 to 826 and fixed to the cover fixing portions 821 to 826.

[0927] like Figure 64 As shown, at least a portion of the tube component 50 is located on the opposite side of the cover fixing protrusion 299 relative to the cover fixing base 298.

[0928] In this way, since the cover fixing protrusion 299 is formed to protrude from the cover fixing base 298 to the side opposite to the tube member 50, interference between the housing side cover fixing portions 291-296 and the tube member 50 can be suppressed, and the degree of freedom of mounting the tube member 50 can be improved. In addition, the volume in the direction of the rotation axis Axr1 of the valve device 10 can be reduced. Therefore, the valve device 10 can be easily mounted in the confined space A1 of the vehicle 1.

[0929] Furthermore, in this embodiment, at least a portion of the tube component 50 is located on the opposite side of the cover fixing protrusion 299 relative to the cover fixing base 298 of the housing side cover fixing portions 291-293 (see reference). Figure 64 wait).

[0930] <7-2>

[0931] like Figure 73 As shown, the cover fixing protrusion 299 forms a cover gap Sc1 between itself and the outer wall of the cover body 81.

[0932] Therefore, when the drive unit cover 80 is tightly connected to the housing 20 via the fixing member 830, even if the cover fixing protrusion 299 of the housing side cover fixing part 291 to 296 breaks, the breakage can be prevented from reaching the housing body 21. Thus, leakage of cooling water that may occur due to the tight connection of the drive unit cover 80 to the housing 20 can be effectively suppressed.

[0933] <7-3>

[0934] like Figure 73 As shown, the axial length L4 of the housing side cover connecting hole 290 is shorter than the length L3. The length L3 is the sum of the length L1 of the cover fixing base 298 and the length L2 of the cover fixing protrusion 299 along the axial direction of the housing side cover connecting hole 290. That is, L4 <L3=L1+L2。

[0935] Therefore, the strength of the housing side cover fixing parts 291 to 296 can be ensured.

[0936] <7-4>

[0937] like Figure 73 As shown, the axial length L5 of the fixing member 830 inside the housing side cover connecting hole 290 is shorter than the axial length L4 of the housing side cover connecting hole 290. That is, L5 <L4。

[0938] Therefore, it is possible to prevent the housing side cover fixing portions 291 to 296 from breaking when the fixing member 830 is screwed into the housing side cover fastening hole 290. In addition, since the front end of the fixing member 830 will not jump out to the side opposite to the cover fixing protrusion 299 relative to the cover fixing base 298, it is possible to prevent the front end of the fixing member 830 from interfering with the tube member 50.

[0939] <7-5>

[0940] like Figure 73 As shown, the fixing component 830 is a self-tapping screw that can simultaneously tap and screw into the housing side cover connecting hole 290.

[0941] Therefore, it is not necessary to mold inserts such as metal parts with threaded grooves into the housing side cover fixing portions 291-296. Furthermore, since an inter-cover gap Sc1 is formed between the cover fixing protrusion 299 of the housing side cover fixing portions 291-296 and the outer wall of the cover body 81, even if the housing side cover fixing portions 291-296 break when the fixing member 830 is screwed into the housing side cover connecting hole 290, the breakage can be prevented from reaching the housing body 21.

[0942] In addition, the axial length L5 of the fixing member 830 inside the tight-fitting hole 290 of the housing side cover corresponds to the tapping length of the fixing member 830.

[0943] like Figure 64 As shown, the tube portion 512 extends toward the drive cover 80. The tube portion 512 extends toward one of the two sides of the housing body 21 in the shorter direction, where a connecting portion (231) is provided. The tube portion 512 extends toward the housing end 215, which is the end of the housing body 21 that is farther from the rotation axis Axr1 from the two ends (215, 216) in the direction Dp1 parallel to the mounting surface 201, that is, the end of the housing body 21 that protrudes in the direction Dp1 from the outer wall of the part forming the internal space 200.

[0944] The pipe portion 512 is formed so as to extend from the outlet port 222, which is the port that is arranged in the middle of the outlet ports 221, 222, 223 that are arranged in a straight line in the housing main body 21. The pipe portion 512 is formed so as to extend from the outlet port 222, which is the port that is arranged in the center of the longer direction of the housing main body 21 with respect to the drive portion cover 80.

[0945] The front end portion of the pipe portion 512 is located on the opposite side of the housing main body 21 from the housing protrusion 219. The side of the front end portion of the pipe portion 512 with respect to the cover fixing base portion 298 of the housing side cover fixing portion 293 is located on the opposite side from the cover fixing protrusion 299.

[0946] As shown in FIG. 6, the housing side cover fixing portions 291 to 293 are formed on the pipe member 50 side with respect to an imaginary plane Vp6 that contains the rotation axis Axr1 and is parallel with respect to the mounting surface 201. The housing side cover fixing portions 294 to 296 are formed on the mounting surface 201 side with respect to the imaginary plane Vp6. Figure 62

[0947] The housing side cover fixing portions 291, 296 are formed on the front end portion side of the pipe portion 516 with respect to an imaginary plane Vp7 that contains the rotation axis Axr1 and is perpendicular with respect to the mounting surface 201. The housing side cover fixing portions 292 to 295 are formed on the front end portion side of the pipe portion 512 with respect to the imaginary plane Vp7.

[0948] A cover-to-cover gap Sc1 is formed between the cover fixing protrusion 299 of the housing side cover fixing portions 291 to 296, which are formed as described above, and the outer wall of the cover main body 81.

[0949] <8-1> Foreign matter accumulation portion

[0950] The present embodiment is a valve device 10 that is capable of controlling the cooling water of an engine 2 of a vehicle 1, and includes a housing 20, a valve 30, a partition wall portion 60, and a drive portion 70.

[0951] The housing 20 has a housing main body 21 that forms an internal space 200 on the inside, ports (220, 221, 222, 223) that connect the internal space 200 with the outside of the housing main body 21, and a housing opening portion 210 that connects the internal space 200 with the outside of the housing main body 21.

[0952] The valve 30 has a valve body 31 that is capable of rotating within the internal space 200 about a rotation axis Axr1, and a shaft 32 that is provided to the rotation axis Axr1, and is capable of opening and closing the ports (221, 222, 223) in accordance with the rotational position of the valve body 31.

[0953] ​The partition wall portion 60 has a partition wall portion main body 61 provided at the housing opening portion 210 to partition the inside space 200 from the outside of the housing main body 21, and a shaft rod insertion hole 62 formed at the partition wall portion main body 61 to enable insertion of one end of the shaft rod 32 therethrough.

[0954] The drive portion 70 is provided at the side opposite to the inside space 200 with respect to the partition wall portion 60, and is capable of rotationally driving the valve body 31 via one end of the shaft rod 32.

[0955] As shown in Figure 69 , the valve 30 has a first restriction protrusion 332 and a second restriction protrusion 342 formed at the valve body 31 as restricted portions.

[0956] As shown in Figure 69 , Figure 103 , Figure 104 , the partition wall portion 60 has a ring-shaped restriction recess 63 recessed from the side of the inside space 200 of the partition wall portion main body 61 toward the side of the drive portion 70 on the radially outer side of the shaft rod insertion hole 62, a restriction portion 631 formed at a portion of the circumferential direction of the restriction recess 63, capable of restricting the rotation of the valve body 31 by abutting against the first restriction protrusion 332 and the second restriction protrusion 342, and a foreign matter accumulation portion 68 recessed from the bottom surface 630 of the restriction recess 63 toward the side of the drive portion 70.

[0957] Therefore, the foreign matter present inside the restriction recess 63 and the foreign matter accumulated on the bottom surface 630 of the restriction recess 63 can be accumulated to the foreign matter accumulation portion 68. Thus, the foreign matter can be distanced from the first restriction protrusion 332 and the second restriction protrusion 342 as the restricted portions and the restriction portion 631, and the foreign matter being sandwiched between the first restriction protrusion 332, the second restriction protrusion 342, and the restriction portion 631 can be suppressed. Thus, the deterioration of the driving accuracy of the valve body 31 caused by the accumulation of the foreign matter to the restriction portion 631 can be suppressed. In addition, the deterioration of the sensor accuracy of the rotation angle sensor 86 caused by the accumulation of the foreign matter to the restriction portion 631 can be suppressed.

[0958] <8-2>

[0959] As shown in Figure 103 , Figure 104 , the restriction recess 63 has an inner cylindrical wall surface 632 formed at the radially inner side as a cylindrical wall surface, and an outer cylindrical wall surface 633 formed at the radially outer side as a cylindrical wall surface.

[0960] Therefore, the foreign matter inside the restriction recess 63 can be suppressed from intruding into the shaft rod insertion hole 62. Thus, the sealing property of the shaft seal member 603 can be ensured.

[0961] <8-3>

[0962] As shown in Figure 103 , Figure 104As shown, at least a portion of the foreign matter accumulation portion 68 is formed on the outer cylinder wall surface 633 side relative to the bottom surface 630 of the limiting recess 63.

[0963] Therefore, foreign objects on the bottom surface 630 of the limiting recess 63 can be guided to the foreign object accumulation portion 68 radially outward of the limiting recess 63, causing the foreign objects to move away from the shaft insertion hole 62. This ensures the sealing performance of the shaft sealing component 603.

[0964] <8-5>

[0965] like Figure 69 As shown, the inner cylinder wall surface 632 can guide the rotation of the valve body 31 by sliding with the first limiting protrusion 332 and the second limiting protrusion 342, which are the restricted parts.

[0966] Therefore, the rotation of the valve body 31 can be stabilized. In addition, by accumulating foreign matter in the foreign matter accumulation part 68, it is possible to suppress the foreign matter from getting stuck between the inner cylinder wall surface 632 and the first limiting protrusion 332 and the second limiting protrusion 342, and suppress the deterioration of the sliding properties of the inner cylinder wall surface 632 and the first limiting protrusion 332 and the second limiting protrusion 342.

[0967] <8-6>

[0968] like Figure 103 , Figure 104 As shown, the limiting part 631 is formed by extending from the inner cylinder wall surface 632 to the outer cylinder wall surface 633.

[0969] Therefore, the strength of the limiting part 631 can be ensured.

[0970] <8-7>

[0971] like Figure 103 , Figure 104 As shown, the length L11 of the radially restricting portion 631 of the restricting recess 63 is greater than the length L12 of the radially foreign matter accumulation portion 68 of the restricting recess 63.

[0972] Therefore, the strength of the limiting part 631 can be ensured.

[0973] <8-12>

[0974] like Figure 104 As shown, the foreign matter accumulation portion 68 is formed in a C-shape in a cross-section perpendicular to the axis of the shaft insertion hole 62.

[0975] Therefore, a partition wall through hole 65 can be formed between the circumferential ends of the foreign matter accumulation section 68.

[0976] <8-13>

[0977] like Figure 103 , Figure 104As shown, the partition wall portion 60 has a partition wall through hole 65 extending outward from the shaft insertion hole 62 and opening on the outer wall of the partition wall portion body 61. The partition wall through hole 65 is formed between the circumferential ends of the foreign matter accumulation portion 68.

[0978] Therefore, it is possible to make effective use of space and to miniaturize the main body 61 of the partition section.

[0979] <8-14>

[0980] like Figure 104 As shown, the bottom surface 630 of the limiting recess 63 is formed such that the circumferential length L21 between the circumferential ends of the foreign matter accumulation portion 68 increases as it moves toward the radially outward.

[0981] Therefore, the strength of the portion of the outer cylinder wall 633 side of the partition body 61 can be ensured between the circumferential ends of the foreign matter accumulation portion 68.

[0982] <8-15>

[0983] like Figure 103 , Figure 104 As shown, the limiting portion 631 is formed such that it extends radially outward on the bottom surface 630 of the limiting recess 63.

[0984] <8-16>

[0985] like Figure 104 As shown, the limiting portion 631 is formed such that its circumferential length L22 increases as it moves toward the radially outer side of the limiting recess 63.

[0986] Therefore, the strength of the portion of the outer cylinder wall 633 side of the limiting part 631 can be ensured.

[0987] <8-17>

[0988] like Figure 67 , Figure 103 As shown, with the housing 20 installed on the engine 2, the foreign matter accumulation part 68 is located on the lower side of the valve body 31.

[0989] More specifically, the foreign matter accumulation section 68 is located on the lower side in the vertical direction relative to the valve body 31.

[0990] Therefore, the foreign matter accumulation portion 68 is located below the bottom surface 630 of the limiting recess 63. This allows foreign matter within the limiting recess 63 to be effectively guided towards the foreign matter accumulation portion 68.

[0991] The partition body 61 is the same as the shell body 21, for example, formed of "PPS-GF50".

[0992] Therefore, it can improve the heat resistance, water absorption resistance, strength, and dimensional accuracy of the partition body 61.

[0993] <9-1> Flow path of shaft bearing section

[0994] This embodiment is a valve device 10 capable of controlling the cooling water of the engine 2 of a vehicle 1, comprising a housing 20, a valve 30, and a shaft bearing portion 90.

[0995] The housing 20 has a housing body 21 that forms an internal space 200 on the inside, and ports (220, 221, 222, 223) that connect the internal space 200 to the outside of the housing body 21.

[0996] The valve 30 has a valve body 31 that can rotate around a rotation axis Axr1 within an internal space 200 and a shaft 32 provided on the rotation axis Axr1, and can open and close ports (221, 222, 223) according to the rotation position of the valve body 31.

[0997] like Figures 105-107 As shown, the shaft bearing portion 90 includes: a bearing portion body 91, which extends in a cylindrical shape from the inner wall of the housing body 21 that forms the internal space 200, which is the inner wall opposite to the end of the shaft 32, i.e., the opposing inner wall 213, and is capable of supporting the end of the shaft 32 on the inside; and a bearing portion flow path 92, which is formed by connecting the inner peripheral wall and the outer peripheral wall of the bearing portion body 91.

[0998] Therefore, even if air accumulates inside the bearing body 91, it can be discharged to the outside of the bearing body 91 via the bearing flow path 92. This prevents the end of the shaft 32 and the shaft bearing portion 90 from sliding in a dry state. Consequently, wear on the end of the shaft 32 or the shaft bearing portion 90 can be suppressed.

[0999] <9-2>

[1000] like Figure 107 As shown, the bearing section flow path 92 is formed to extend from the portion of the bearing section body 91 on the side of the opposing inner wall 213 to the end on the opposite side of the opposing inner wall 213.

[1001] Therefore, even if air accumulates inside the bearing body 91, it can be quickly discharged to the outside of the bearing body 91 via the bearing flow path 92.

[1002] <9-3>

[1003] like Figure 105 , Figure 106 As shown, the valve body 31 has a valve body end hole 314, which is formed such that the end of the shaft 32 and the bearing body 91 are located inside the valve body end hole 314.

[1004] Therefore, by arranging the bearing portion main body 91 inside the valve body end hole portion 314, the volume in the rotation axis Axr1 direction of the housing main body 21 can be reduced. Thus, the valve device 10 can be downsized.

[1005] <9-4>

[1006] As shown in Figure 105 , Figure 106 , the shaft rod bearing portion 90 has a cylindrical inside bearing portion 93 arranged inside the bearing portion main body 91 and capable of axially supporting the end portion of the shaft rod 32 inside.

[1007] Therefore, the wear of the bearing portion main body 91 can be suppressed.

[1008] <9-5>

[1009] As shown in Figure 105 , Figure 106 , the valve body 31 has a valve body end hole portion 314 formed so as to have the end portion of the shaft rod 32 and the bearing portion main body 91 inside. The shaft rod bearing portion 90 has a cylindrical inside bearing portion 93 arranged inside the bearing portion main body 91 and capable of axially supporting the end portion of the shaft rod 32 inside. The difference between the inner diameter of the valve body end hole portion 314 and the outer diameter of the bearing portion main body 91 is smaller than the difference between the inner diameter of the bearing portion main body 91 and the outer diameter of the end portion of the shaft rod 32.

[1010] That is, the cylindrical gap S1 between the valve body end hole portion 314 and the bearing portion main body 91 is relatively small and is not formed to such a size that the cooling water actively flows therethrough.

[1011] <9-6>

[1012] As shown in Figure 105 , Figure 106 , in the state where the housing 20 is mounted to the engine 2, the shaft rod bearing portion 90 is located on the lower side of the opposing inner wall 213.

[1013] More specifically, the shaft rod bearing portion 90 is located on the vertically lower side with respect to the opposing inner wall 213.

[1014] Therefore, the shaft rod bearing portion 90 is located on the vertically upper side of the internal space 200, and the air in the cooling water inside the internal space 200 is likely to accumulate inside the bearing portion main body 91. However, even if the air accumulates inside the bearing portion main body 91, the air can be discharged to the outside of the bearing portion main body 91 via the bearing portion flow path 92.

[1015] In the present embodiment, the bearing portion main body 91 is formed in a substantially cylindrical shape. The bearing portion flow path 92 is formed so as to extend from an end portion on the opposite inner wall 213 side of the bearing portion main body 91 to an end portion on the opposite side from the opposite inner wall 213. The bearing portion flow path 92 is formed with two at equal intervals in the circumferential direction of the bearing portion main body 91, sandwiching the shaft of the bearing portion main body 91 (refer to Fig. 6). Figure 107 ).

[1016] As shown in Fig. 6, the inner side bearing portion 93 is formed with a bearing notch portion 931. The inner side bearing portion 93 is formed in a substantially cylindrical shape, for example, from a resin such as PPS. The bearing notch portion 931 is formed so as to connect the inner peripheral wall and the outer peripheral wall of the inner side bearing portion 93, and so as to extend from one end portion to the other end portion of the inner side bearing portion 93. Figure 107

[1017] Therefore, even if air accumulates on the inner side of the inner side bearing portion 93, it is possible to discharge this air to the outer side of the inner side bearing portion 93 via the bearing notch portion 931. Furthermore, by forming the bearing notch portion 931 in the inner side bearing portion 93, it is possible to easily arrange the inner side bearing portion 93 between the end portion of the shaft rod 32 and the bearing portion main body 91.

[1018] The bearing notch portion 931 is formed so as to extend from one end portion to the other end portion of the inner side bearing portion 93, inclining with respect to the shaft of the inner side bearing portion 93.

[1019] Therefore, at any portion in the circumferential direction of the inner side bearing portion 93, it is possible to bring the inner peripheral wall of the inner side bearing portion 93 into abutment with the outer peripheral wall of the end portion of the shaft rod 32, regardless of the position in the axial direction. Thus, in the structure in which the bearing notch portion 931 is formed in the inner side bearing portion 93, it is possible to stably shaft-support the shaft rod 32.

[1020] As shown in Fig. 6, the bearing portion main body 91 is formed so as to extend to the lower side of the end portion on the vertically upward side of the outlet port 221. That is, the front end portion of the bearing portion main body 91 is located on the lower side than the end portion on the vertically upward side of the outlet port 221. Figure 105 Figure 106 Therefore, it is possible to easily discharge air on the inner side of the bearing portion main body 91 to the outside of the housing main body 21 via the outlet port 221.

[1021] Therefore, it is possible to easily discharge air on the inner side of the bearing portion main body 91 to the outside of the housing main body 21 via the outlet port 221.

[1022] <10-1> Non-circular housing inner wall

[1023] The present embodiment is a valve device 10 capable of controlling the cooling water of an engine 2 of a vehicle 1, and is provided with a housing 20 and a valve 30.

[1024] ​​The housing 20 has a housing main body 21 formed with a cylindrical housing inner wall 211 that forms an internal space 200 on the inner side, and ports (220, 221, 222, 223) that are opened in the housing inner wall 211 and connect the internal space 200 with the outside of the housing main body 21.

[1025] As shown in Figure 67 , Figure 108 , the valve 30 has a valve body 31 that is rotatable in the internal space 200 about a rotation axis Axr1 along the axis Axn1 of the housing inner wall 211, and valve body opening portions (410, 420, 430) that are formed by connecting the outer peripheral wall of the valve body 31 with the inner peripheral wall, and that are openable and closable in accordance with the rotational position of the valve body 31. In the present embodiment, the axis Axn1 coincides with the rotation axis Axr1.

[1026] As shown in Figure 108 , Figure 109 , the housing inner wall 211 is formed so that the distance Dna1 from the axis Axn1 differs in the circumferential direction.

[1027] Therefore, in the case where the shape of the outer peripheral wall of the valve body 31 in a cross section perpendicular to the rotation axis Axr1 is circular, the distance Dgn1 of the outer peripheral wall of the valve body 31 from the housing inner wall 211 differs in the circumferential direction. That is, the distance Dgn1 of the outer peripheral wall of the valve body 31 from the housing inner wall 211 is not constant in the circumferential direction, and the gap Sb10 between the outer peripheral wall of the valve body 31 and the housing inner wall 211 is formed with a larger portion (gap Sb01) and a smaller portion (gap Sb02) in the circumferential direction (refer to Figure 109 ). Thus, even in the case where a foreign object in the cooling water in the internal space 200 enters the gap Sb10 between the outer peripheral wall of the valve body 31 and the housing inner wall 211, the foreign object is moved to the larger gap Sb01 by the rotation of the valve body 31, and can be easily discharged from this gap Sb01. Thus, it is possible to suppress malfunction of the valve body 31 due to the continuous accumulation of the foreign object in the gap Sb10 between the outer peripheral wall of the valve body 31 and the housing inner wall 211. Furthermore, it is possible to suppress an increase in the load torque related to the driving of the valve body 31, and an increase in the pressure loss resistance.

[1028] <10-2>

[1029] As shown in Figure 108 , Figure 109 , the valve body 31 is formed so that the distance Dga1 from the rotation axis Axr1 to the outer peripheral wall is constant in the circumferential direction. That is, the outer peripheral wall of the valve body 31 is formed in a circular shape in a cross section perpendicular to the rotation axis Axr1.

[1030] Therefore, as described above, the distance Dgn1 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing is different in the circumferential direction. The gap Sb10 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing has a larger portion (gap Sb01) and a smaller portion (gap Sb02) in the circumferential direction. Therefore, it is possible to suppress malfunction of the valve body 31 caused by the continuous accumulation of foreign matter in the gap Sb10 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing.

[1031] <10-3>

[1032] like Figure 108 As shown, the inner wall 211 of the shell is formed to be non-circular in a cross section perpendicular to the axis Axn1.

[1033] Therefore, the gap Sb10 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing has a larger portion (gap Sb01) and a smaller portion (gap Sb02) in the circumferential direction.

[1034] <10-4>

[1035] like Figure 108 As shown, the inner wall 211 of the shell is formed as a polygon in a cross section perpendicular to the axis Axn1.

[1036] Therefore, the cross-section of the inner wall 211 of the housing can be made close to a circle to reduce the radial volume of the housing body 21, and a larger portion (gap Sb01) and a smaller portion (gap Sb02) are formed in the gap Sb10 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing.

[1037] Furthermore, in this embodiment, the inner wall 211 of the housing is formed to be octagonal in a cross-section perpendicular to the axis Axn1. Moreover, the connecting portions of each side of the octagonal inner wall 211, i.e., the corners 214, are smooth curves (see reference). Figure 108 , Figure 109 ).

[1038] Therefore, the radial volume of the housing body 21 can be further reduced. In addition, the accumulation of foreign matter at the corners 214 of the inner wall 211 of the housing can be suppressed.

[1039] <10-5>

[1040] like Figure 67 As shown, in the section containing the largest outer diameter of the valve body 31, and perpendicular to the axis Axn1 of the inner wall 211 of the housing (e.g. Figure 67 In the cross-section of the surface represented by Pd1, the distance Dgn1 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing is different in the circumferential direction.

[1041] Therefore, in the "portion of the valve body 31 where the influence of foreign matter is large", it is possible to discharge foreign matter from the gap Sb10 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing.

[1042] <10-6>

[1043] As shown in FIG. 10, in the "cross section of the face indicated by Pd2 in FIG. 9", the distance Dgn1 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing differs in the circumferential direction. Figure 67 Figure 67 Therefore, in the "portion of the gap Sb10 that is closed throughout the entire area in the circumferential direction of the valve body 31", it is possible to discharge foreign matter from the gap Sb10.

[1044] Therefore, in the "portion of the valve body 31 where the influence of foreign matter is large", it is possible to discharge foreign matter from the gap Sb10 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing.

[1045] <10-7>

[1046] As shown in FIG. 10, in the "cross section of the face indicated by Pd2 in FIG. 9", the distance Dgn1 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing differs in the circumferential direction. Figure 68

[1047] The present embodiment is also provided with an overflow valve 39. The overflow valve 39 is provided at the overflow port 224 and opens and closes the overflow port 224 according to conditions.

[1048] In a situation where foreign matter cannot be removed along the flow of the cooling water, the foreign matter accumulates in the internal space 200, and when the overflow valve 39 is opened, it is possible for the foreign matter to be caught and for the overflow valve 39 to remain in an open state.

[1049] Therefore, in the present embodiment, by forming the inner wall 211 of the housing so that the distance Dna1 from the axis Axn1 differs in the circumferential direction and so that the distance Dgn1 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing differs in the circumferential direction, it is possible to easily discharge foreign matter from the gap Sb10 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing. As a result, it is possible to inhibit the foreign matter from being caught in the overflow valve 39 and for the overflow valve 39 to remain in an open state.

[1050] <10-8>

[1051] As shown in FIG. 10, in the "cross section of the face indicated by Pd2 in FIG. 9", the distance Dgn1 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing differs in the circumferential direction. Figure 67 As shown in FIG. 10, in the "cross section of the face indicated by Pd2 in FIG. 9", the distance Dgn1 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing differs in the circumferential direction.​​

[1052] In a "cross section of a face including the valve seal 36 and perpendicular to the axis Axn1 of the housing inner wall 211 (for example Figure 67 In the "cross section of a face indicated by Pd1 in the housing 20", the distance Dgn1 between the outer peripheral wall of the valve body 31 and the housing inner wall 211 differs in the circumferential direction.

[1053] Therefore, the foreign matter can be removed from the periphery of the valve seal 36 in the gap Sb10 between the outer peripheral wall of the valve body 31 and the housing inner wall 211. Thus, damage to the outer peripheral wall of the valve body 31 caused by the foreign matter being pinched between the outer peripheral wall of the valve body 31 and the valve seal 36 can be suppressed.

[1054] <10-9>

[1055] As shown in FIG. 1, the housing 20 has a housing opening portion 210 that connects an end portion in the direction of the axis Axn1 of the housing inner wall 211 of the inner peripheral surface and that connects the inside space 200 with the outside of the housing main body 21. Figure 67

[1056] The valve 30 has a shaft 32 provided to the rotation axis Axr1.

[1057] The partition wall portion 60 has a partition wall portion main body 61 provided to the housing opening portion 210 to partition the inside space 200 from the outside of the housing main body 21, and a shaft insertion hole 62 formed in the partition wall portion main body 61 to enable insertion of one end of the shaft 32.

[1058] The drive portion 70 is provided to the opposite side of the partition wall portion main body 61 from the inside space 200, and is capable of rotationally driving the valve body 31 via one end of the shaft 32.

[1059] The annular seal member 600 is provided between the housing opening portion 210 and the partition wall portion main body 61, and is capable of maintaining liquid tightness between the housing opening portion 210 and the partition wall portion main body 61.

[1060] The inner peripheral surface of the housing opening portion 210 is formed in a cylindrical shape.

[1061] Thus, by forming the housing inner wall 211 in a cross section that is not a true circle and by forming the inner peripheral surface of the housing opening portion 210 in a cylindrical shape, the foreign matter can be easily removed from the gap Sb10 between the outer peripheral wall of the valve body 31 and the housing inner wall 211, and the sealability of the housing opening portion 210 and the partition wall portion main body 61 can be ensured.

[1062] ​In this embodiment, the valve body 31 includes ball valves 41, 42, and 43 whose inner and outer peripheral walls are spherical. In contrast, in other embodiments, the valve body 31 may be formed as a cylinder, for example. In this case, by forming the inner wall 211 of the housing as described above, foreign matter can be easily removed from the gap Sb10 between the outer peripheral wall of the valve body 31 and the inner wall 211 of the housing.

[1063] <11-1> Overflow Valve Covering Section

[1064] This embodiment is a valve device 10 capable of controlling the cooling water of the engine 2 of a vehicle 1, comprising a housing 20, a valve 30, an overflow valve 39, and a shielding part 95.

[1065] The housing 20 has: a housing body 21 forming an internal space 200 on the inside; an inlet port 220 connecting the internal space 200 to the outside of the housing body 21 for cooling water to flow in; and an overflow port 224 connecting the internal space 200 to the outside of the housing body 21.

[1066] The valve 30 has a valve body 31 that is rotatable about a rotation axis Axr1 within an internal space 200 and a shaft 32 provided on the rotation axis Axr1.

[1067] An overflow valve 39 is provided at the overflow port 224, which opens or closes depending on the conditions, allowing or disconnecting the communication between the internal space 200 and the outside of the housing body 21 via the overflow port 224.

[1068] Here, the opening condition of the overflow valve 39 is, for example, "when the ambient temperature reaches or exceeds a predetermined temperature." The overflow valve 39 opens, for example, when the coolant temperature reaches or exceeds a predetermined temperature, allowing communication between the internal space 200 of the overflow port 224 and the space inside the outer part of the housing body 21, i.e., the inner side of the pipe section 515. When the coolant temperature is lower than the predetermined temperature, this communication is disconnected. Therefore, in cases where the coolant temperature rises excessively, such as when the vehicle 1 overheats, coolant can flow from the internal space 200 to the external radiator 5 to cool the coolant.

[1069] like Figure 112 As shown, the shielding part 95 can shield the overflow valve 39 so that the overflow valve 39 cannot be seen from the inlet port 220. More specifically, the overflow valve 39 is shielded by the shielding part 95 when viewed axially from the inlet port 220, and is therefore not visible to the naked eye.

[1070] Therefore, it is possible to prevent the cooling water flowing into the interior space 200 from the inlet port 220 from directly impacting the relief valve 39. Thus, even when high-temperature cooling water flows in momentarily or locally, it is possible to prevent the relief valve 39 from mistakenly interpreting overheating and opening erroneously. Therefore, overheating of the vehicle 1 can be appropriately suppressed by the relief valve 39.

[1071] <11-2>

[1072] like Figure 112 As shown, the shielding part 95 is provided on the housing body 21 in such a way that it is located on the overflow port 224 side relative to the shaft 32.

[1073] Therefore, by positioning the shielding part 95 close to the overflow valve 39, the direct impact of cooling water on the overflow valve 39 can be suppressed more effectively.

[1074] <11-4>

[1075] like Figure 110 , Figure 112 As shown, the shielding portion 95 is formed such that when the inlet port 220, the overflow valve 39, and the shielding portion 95 are projected onto the axial direction of the inlet port 220 or the overflow port 224, the projection of the inlet port 220 overlaps with the projection of the overflow valve 39, forming portion B1. Figure 110 The projection of the area above the area represented by the grid in the middle.

[1076] Therefore, it can reliably prevent cooling water from directly impacting the overflow valve 39 and ensure water flow by reducing the flow path area as necessary.

[1077] <11-5>

[1078] like Figure 112 As shown, the valve 30 side surface 951 of the shielding part 95 is formed to resemble the shape of the inner wall of the housing body 21 that forms the internal space 200, namely the inner wall 211 of the housing.

[1079] Therefore, it is possible to suppress the occurrence of fluid flow disturbances within the internal space 200 caused by the shielding portion 95. In addition, it is possible to prevent stress concentration in the shielding portion 95 and improve the durability of the housing body 21.

[1080] <11-6>

[1081] like Figure 112 As shown, the shielding part 95 is formed into a plate shape, and the plate thickness is uniform.

[1082] Therefore, stress concentration in the shielding part 95 can be prevented, and the durability of the housing body 21 can be improved.

[1083] In the present embodiment, the spill valve 39 is opened "when the temperature of the surroundings is a prescribed temperature or higher". In contrast, in other embodiments, the spill valve 39 can also be opened "when the pressure is a prescribed pressure or higher". Alternatively, the spill valve 39 can also be opened "when the temperature of the surroundings is a prescribed temperature or higher" and "when the pressure is a prescribed pressure or higher". In this case as well, it is possible to suppress the malfunction of the spill valve 39 by suppressing the direct impact of the cooling water on the spill valve 39 by the shield portion 95.

[1084] (15th Embodiment)

[1085] Based on Figure 113 、 Figure 114 The valve device of the 15th embodiment will be described. The structure of the valve body 31 of the 15th embodiment is different from that of the 14th embodiment.

[1086] In the present embodiment, the formation positions and sizes of the valve body opening portions 410, 420, 430 in the circumferential direction of the valve body 31 are different from those of the 14th embodiment.

[1087] In the present embodiment, the arrangement direction and shape of the ball valve 41, the cylindrical connection portion 44, the ball valve 42, the cylindrical valve connection portion 45, and the ball valve 43 are the same as those of the 14th embodiment (see Figures 90-102 , etc.). Furthermore, in the present embodiment, the valve body opening portion 410 has a large opening portion 412 and an extended opening portion 413, like the 14th embodiment (see Figure 93 、 Figure 94 , etc.).

[1088] <12-1> Flow diagram

[1089] The present embodiment is a valve device 10 capable of controlling the cooling water of the engine 2 of the vehicle 1, and includes a housing 20, a valve 30, a driving portion 70, and an ECU 8 as a control portion.

[1090] The housing 20 has an internal space 200, an outlet port 221 as a radiator port connected to the internal space 200 and connected to the radiator 5 of the vehicle 1, an outlet port 222 as a heater port connected to the internal space 200 and connected to the heater 6 of the vehicle 1, and an outlet port 223 as a device port connected to the internal space 200 and connected to the device 7 of the vehicle 1. Hereinafter, for simplicity, the outlet ports 221, 222, 223 will be appropriately referred to as the radiator port 221, the heater port 222, and the device port 223, respectively.

[1091] The valve 30 has a valve body 31 that is rotatable about a rotation axis Axr1 within an internal space 200, and can open or close the radiator port 221, heater port 222 or equipment port 223 depending on the rotation position of the valve body 31.

[1092] The drive unit 70 can drive the valve body 31 to rotate.

[1093] The ECU8 controls the operation of the drive unit 70 and controls the rotation drive of the valve body 31, thereby controlling the flow of cooling water between the radiator port 221 and the radiator 5, between the heater port 222 and the heater 6, and between the device port 223 and the device 7.

[1094] like Figure 113 , Figure 114 As shown, ECU8 can control drive unit 70 and valve body 31 such that: as valve body 31 is driven to rotate in the direction of rotation, after all the openings of radiator port 221, heater port 222 and device port 223 become a predetermined opening greater than 0, heater port 222 and device port 223 are closed, and only the opening of radiator port 221 becomes the aforementioned predetermined opening.

[1095] Therefore, by setting the above-mentioned opening degree to a level that can improve the cooling efficiency of the engine 2, and by controlling the drive unit 70 and the valve body 31 so that only the radiator port 221 opening degree is the above-mentioned opening degree, the cooling efficiency of the engine 2 under high load can be maximized.

[1096] <12-2>

[1097] like Figure 113 , Figure 114 As shown, the ECU8 can control the drive unit 70 and the valve body 31 so that: as the valve body 31 is driven to rotate in the direction of rotation, after the radiator port 221, heater port 222 and device port 223 are all at the specified openings, the heater port 222 and device port 223 are closed in sequence.

[1098] Therefore, the heat exchange from heater 6 can be immediately disconnected, improving the cooling efficiency of engine 2.

[1099] <12-9>

[1100] The opening degree specified above is set to 60% or more.

[1101] Therefore, by controlling the drive unit 70 and the valve body 31 so that the opening degree of only the radiator port 221 is the specified opening degree, the cooling efficiency of the engine 2 under high load can be appropriately maximized.

[1102] In addition, in the present embodiment, the above-mentioned prescribed opening degree is set to 100% in order to maximize the cooling efficiency of the engine 2.

[1103] Therefore, by controlling the drive section 70 and the valve body 31 so that only the radiator port 221 opening degree becomes the above-mentioned prescribed opening degree, it is possible to maximize the cooling efficiency of the engine 2 at the time of high load.

[1104] <12-10>

[1105] The outer peripheral wall and the inner peripheral wall of the valve body 31 are formed in a spherical shape (see FIG. 12). Figure 67

[1106] The valve 30 has a valve body inner flow path 300 formed on the inner side of the inner peripheral wall of the valve body 31, a valve body opening portion 410 as a radiator opening portion formed so as to connect the outer peripheral wall and the inner peripheral wall of the valve body 31, which changes in accordance with the valve body 31 rotation position, in the overlapping ratio with the radiator port 221, that is, the radiator overlapping ratio, a valve body opening portion 420 as a heater opening portion formed so as to connect the outer peripheral wall and the inner peripheral wall of the valve body 31, which changes in accordance with the valve body 31 rotation position, in the overlapping ratio with the heater port 222, that is, the heater overlapping ratio, and a valve body opening portion 430 as an equipment opening portion formed so as to connect the outer peripheral wall and the inner peripheral wall of the valve body 31, which changes in accordance with the valve body 31 rotation position, in the overlapping ratio with the equipment port 223, that is, the equipment overlapping ratio. Hereinafter, in order to simplify, the valve body opening portions 410, 420, 430 will be appropriately referred to as the radiator opening portion 410, the heater opening portion 420, and the equipment opening portion 430, respectively.

[1107] In this way, the present embodiment can be realized by a rotary valve of the valve body 31 whose outer peripheral wall and inner peripheral wall are spherical.

[1108] Here, more specifically, the radiator overlapping ratio is the ratio of the overlapping area of the seal opening portion 360 of the valve seal 36 of the seal unit 35 provided in the radiator port 221 and the radiator opening portion 410 with respect to the maximum value of the overlapping area, which corresponds to the opening degree of the radiator port 221.

[1109] More specifically, the heater overlapping ratio is the ratio of the overlapping area of the seal opening portion 360 of the valve seal 36 of the seal unit 35 provided in the heater port 222 and the heater opening portion 420 with respect to the maximum value of the overlapping area, which corresponds to the opening degree of the heater port 222.

[1110] ​More specifically, the device overlap ratio is the ratio of the overlapping area of the seal opening portion 360 of the valve seal 36 of the sealing unit 35 provided at the device port 223 and the device opening portion 430, with respect to the maximum value of the overlapping area of the seal opening portion 360 of the valve seal 36 of the sealing unit 35 provided at the device port 223 and the device opening portion 430, corresponding to the opening degree of the device port 223.

[1111] <12-11>

[1112] When the radiator overlap ratio is greater than 0, the radiator port 221 is opened, and the valve body internal flow path 300 communicates with the radiator 5 via the radiator opening portion 410 and the radiator port 221. Thus, at this time, the cooling water flows from the valve body internal flow path 300 to the radiator 5 side.

[1113] When the heater overlap ratio is greater than 0, the heater port 222 is opened, and the valve body internal flow path 300 communicates with the heater 6 via the heater opening portion 420 and the heater port 222. Thus, at this time, the cooling water flows from the valve body internal flow path 300 to the heater 6 side.

[1114] When the device overlap ratio is greater than 0, the device port 223 is opened, and the valve body internal flow path 300 communicates with the device 7 via the device opening portion 430 and the device port 223. Thus, at this time, the cooling water flows from the valve body internal flow path 300 to the device 7 side.

[1115] Next, based on Figure 113 , Figure 114 the flow of the cooling water of the valve device 10 of the present embodiment is described in detail.

[1116] As shown in Figure 113 , Figure 114 , when the rotational position of the valve body 31 is 0 (degrees) as a reference position (the rotational position Pr0 in Figure 114 ), that is, when one of the first limiting protrusion 332 or the second limiting protrusion 342 abuts against the limiting portion 631 and the rotation of the valve body 31 is limited, the opening degrees of the radiator port 221, the heater port 222, and the device port 223 are all 0% (fully closed). Hereinafter, in the case where it is written as Pr0-13, it means the rotational position Pr0-13 in Figure 114 .

[1117] By the control of the driving portion 70 by the ECU 8, the valve body 31 is rotationally driven to one side in the rotational direction, and when the rotational position of the valve body 31 is greater than 0, between Pr2 and Pr3, the opening degree of the heater port 222 increases at a predetermined ratio from 0 (%). Thus, the cooling water corresponding to the opening degree of the heater port 222 flows to the heater 6 side. The opening degree of the heater port 222 reaches 100% (fully open: the above-described predetermined opening degree) at Pr3.

[1118] If the valve body 31 is further rotationally driven to one side in the rotational direction, the opening degree of the radiator port 221 increases from 0(%) at a prescribed ratio between Pr6 and Pr7. Thereby, an amount of cooling water corresponding to the opening degree of the radiator port 221 flows to the radiator 5 side.

[1119] Here, the increase ratio of the opening degree of the radiator port 221 between Pr6 and Pr7 per unit rotational angle of the valve body 31 is smaller than the increase ratio of the opening degree of the radiator port 221 between Pr7 and Pr8 (refer to Figure 113 , Figure 114 ).

[1120] If the valve body 31 is further rotationally driven to one side in the rotational direction, the opening degree of the radiator port 221 increases from 0(%) at a prescribed ratio between Pr6 and Pr7. Thereby, an amount of cooling water corresponding to the opening degree of the radiator port 221 flows to the radiator 5 side.

[1121] If the valve body 31 is further rotationally driven to one side in the rotational direction, the opening degree of the radiator port 221 increases from 0(%) at a prescribed ratio between Pr6 and Pr7. Thereby, an amount of cooling water corresponding to the opening degree of the radiator port 221 flows to the radiator 5 side.

[1122] Here, the increase ratio of the opening degree of the radiator port 221 between Pr6 and Pr7 per unit rotational angle of the valve body 31 is smaller than the increase ratio of the opening degree of the radiator port 221 between Pr7 and Pr8 (refer to Figure 113 , Figure 114 ). This is because the radiator opening portion 410 is formed of the extension opening portion 413 and the large opening portion 412 (refer to Figure 93 , Figure 94 , etc.). That is, the increase ratio of the opening degree of the radiator port 221 becomes small when the extension opening portion 413 overlaps the seal opening portion 360, and becomes large when the large opening portion 412 overlaps the seal opening portion 360.

[1123] Therefore, at the initial stage of opening of the radiator port 221, it is possible to gradually increase the flow rate of cooling water toward the radiator 5. Thereby, it is possible to suppress a sharp temperature change of cooling water due to heat exchange by the radiator 5.

[1124] Further, the increase ratio of the opening degree of the radiator port 221 between Pr6 and Pr7 per unit rotation angle of the valve body 31, and the increase ratio of the opening degree of the radiator port 221 between Pr7 and Pr8 are smaller than the increase ratio of the opening degree of the heater port 222 between Pr2 and Pr3, the increase ratio of the opening degree of the device port 223 between Pr4 and Pr5 (refer to Figure 113 、 Figure 114 ).

[1125] Therefore, it is possible to make the change in the flow rate of the cooling water toward the radiator 5 at the initial stage of opening more gradual than the change in the flow rate of the cooling water toward the heater 6 and the device 7. Thus, it is possible to suppress a sharp change in the temperature of the cooling water due to heat exchange by the radiator 5.

[1126] If the valve body 31 is further rotationally driven to one side in the rotational direction, the opening degree of the heater port 222 decreases from 100% at a prescribed ratio between Pr9 and Pr10. Thus, the amount of the cooling water flowing to the heater 6 side decreases in correspondence with the opening degree of the heater port 222. The opening degree of the heater port 222 becomes 0% (fully closed) at Pr10. Thus, the heater port 222 is closed, and the flow of the cooling water toward the heater 6 side is cut off.

[1127] If the valve body 31 is further rotationally driven to one side in the rotational direction, the opening degree of the device port 223 decreases from 100% at a prescribed ratio between Pr11 and Pr12. Thus, the amount of the cooling water flowing to the device 7 side decreases in correspondence with the opening degree of the device port 223. The opening degree of the device port 223 becomes 0% (fully closed) at Pr1...

Claims

1. A valve device capable of controlling the cooling water of a vehicle's heating element, characterized in that, have: The housing has a housing body that forms an internal space on the inside, a port that connects the internal space to the outside of the housing body, and a housing opening that connects the internal space to the outside of the housing body. The valve has a valve body that can rotate about a rotation axis within the aforementioned internal space, and a shaft provided on the aforementioned rotation axis, and is capable of opening and closing the aforementioned port according to the rotational position of the aforementioned valve body. The partition wall includes a partition wall body located at the opening of the housing to separate the internal space from the exterior of the housing body, and a shaft insertion hole formed in the partition wall body to allow one end of the shaft to be inserted through; and The drive unit is located on the opposite side of the aforementioned partition wall portion in the aforementioned internal space, and can rotate the valve body via one end of the aforementioned shaft. The valve described above has a restricted portion formed in the valve body; The aforementioned partition wall has an annular limiting recess recessed radially outward from the inner space side of the partition wall body toward the drive section side, a limiting portion formed in a circumferential part of the limiting recess and capable of limiting the rotation of the valve body by abutting against the restricted portion, and a foreign matter accumulation portion recessed from the bottom surface of the limiting recess toward the drive section side. The aforementioned limiting recess has an inner cylindrical wall surface formed on the radially inner side as a cylindrical wall surface, and an outer cylindrical wall surface formed on the radially outer side as a cylindrical wall surface; The valve described above has a valve body cylindrical portion that extends in a cylindrical shape from the valve body toward the drive portion side; The front end of the valve body cylinder is located radially outside the inner cylinder wall.

2. The valve device as claimed in claim 1, characterized in that, At least a portion of the aforementioned foreign matter accumulation portion is formed on the outer cylinder wall side relative to the bottom surface of the aforementioned limiting recess.

3. The valve device as claimed in claim 1, characterized in that, The bottom surface of the aforementioned limiting recess is formed in a conical shape, such that the bottom surface of the aforementioned limiting recess approaches the aforementioned driving part from the inner cylinder wall side toward the outer cylinder wall side.

4. The valve device as claimed in claim 1, characterized in that, The inner cylinder wall surface can guide the rotation of the valve body by sliding against the restricted part.

5. The valve device as claimed in claim 1, characterized in that, The aforementioned limiting portion is formed to extend from the inner cylinder wall surface to the outer cylinder wall surface.

6. The valve device as claimed in claim 5, characterized in that, The length of the limiting portion in the radial direction of the aforementioned limiting recess is greater than the length of the foreign matter accumulation portion in the radial direction of the aforementioned limiting recess.

7. The valve device according to any one of claims 1 to 6, characterized in that, With the housing installed on the heating element, the foreign matter accumulation portion is located on the lower side of the valve body.

8. The valve device as claimed in claim 1, characterized in that, The valve described above has a labyrinth-forming part formed in the valve body cylinder that is capable of forming a labyrinth-like space between itself and the inner cylinder wall.

9. The valve device as claimed in claim 8, characterized in that, The aforementioned labyrinth-forming section is formed such that it protrudes radially inward from the front end of the aforementioned valve body cylinder.

10. The valve device as claimed in claim 1, characterized in that, The valve body cylindrical portion is formed such that it is located on the inner cylinder wall side relative to the limiting portion in the radial direction of the limiting recess.

11. A valve device capable of controlling the cooling water of a vehicle's heating element, characterized in that, have: The housing has a housing body that forms an internal space on the inside, a port that connects the internal space to the outside of the housing body, and a housing opening that connects the internal space to the outside of the housing body. The valve has a valve body that can rotate about a rotation axis within the aforementioned internal space, and a shaft provided on the aforementioned rotation axis, and is capable of opening and closing the aforementioned port according to the rotational position of the aforementioned valve body. The partition wall includes a partition wall body located at the opening of the housing to separate the internal space from the exterior of the housing body, and a shaft insertion hole formed in the partition wall body to allow one end of the shaft to be inserted through; and The drive unit is located on the opposite side of the aforementioned partition wall portion in the aforementioned internal space, and can rotate the valve body via one end of the aforementioned shaft. The valve described above has a restricted portion formed in the valve body; The aforementioned partition wall has an annular limiting recess recessed radially outward from the inner space side of the partition wall body toward the drive section side, a limiting portion formed in a circumferential part of the limiting recess and capable of limiting the rotation of the valve body by abutting against the restricted portion, and a foreign matter accumulation portion recessed from the bottom surface of the limiting recess toward the drive section side. The aforementioned foreign matter accumulation portion is formed in a C-shape in a cross-section perpendicular to the axis of the aforementioned shaft insertion hole; The aforementioned partition wall portion has a partition wall through hole that extends outward from the aforementioned shaft insertion hole and opens on the outer wall of the aforementioned partition wall portion body; The aforementioned through-hole in the partition wall is formed between the circumferential ends of the aforementioned foreign matter accumulation portion.

12. A valve device capable of controlling the cooling water of a vehicle's heating element, characterized in that, have: The housing has a housing body that forms an internal space on the inside, a port that connects the internal space to the outside of the housing body, and a housing opening that connects the internal space to the outside of the housing body. The valve has a valve body that can rotate about a rotation axis within the aforementioned internal space, and a shaft provided on the aforementioned rotation axis, and is capable of opening and closing the aforementioned port according to the rotational position of the aforementioned valve body. The partition wall includes a partition wall body located at the opening of the housing to separate the internal space from the exterior of the housing body, and a shaft insertion hole formed in the partition wall body to allow one end of the shaft to be inserted through; and The drive unit is located on the opposite side of the aforementioned partition wall portion in the aforementioned internal space, and can rotate the valve body via one end of the aforementioned shaft. The valve described above has a restricted portion formed in the valve body; The aforementioned partition wall has an annular limiting recess recessed radially outward from the inner space side of the partition wall body toward the drive section side, a limiting portion formed in a circumferential part of the limiting recess and capable of limiting the rotation of the valve body by abutting against the restricted portion, and a foreign matter accumulation portion recessed from the bottom surface of the limiting recess toward the drive section side. The aforementioned foreign matter accumulation portion is formed in a C-shape in a cross-section perpendicular to the axis of the aforementioned shaft insertion hole; The bottom surface of the aforementioned limiting recess is formed such that its circumferential length increases between the circumferential ends of the aforementioned foreign matter accumulation portion as it moves radially outward.

13. A valve device capable of controlling the cooling water of a vehicle's heating element, characterized in that, have: The housing has a housing body that forms an internal space on the inside, a port that connects the internal space to the outside of the housing body, and a housing opening that connects the internal space to the outside of the housing body. The valve has a valve body that can rotate about a rotation axis within the aforementioned internal space, and a shaft provided on the aforementioned rotation axis, and is capable of opening and closing the aforementioned port according to the rotational position of the aforementioned valve body. The partition wall includes a partition wall body located at the opening of the housing to separate the internal space from the exterior of the housing body, and a shaft insertion hole formed in the partition wall body to allow one end of the shaft to be inserted through; and The drive unit is located on the opposite side of the aforementioned partition wall portion in the aforementioned internal space, and can rotate the valve body via one end of the aforementioned shaft. The valve described above has a restricted portion formed in the valve body; The aforementioned partition wall has an annular limiting recess recessed radially outward from the inner space side of the partition wall body toward the drive section side, a limiting portion formed in a circumferential part of the limiting recess and capable of limiting the rotation of the valve body by abutting against the restricted portion, and a foreign matter accumulation portion recessed from the bottom surface of the limiting recess toward the drive section side. The aforementioned limiting portion is formed such that it extends radially outward on the bottom surface of the aforementioned limiting recess.

14. The valve device as claimed in claim 13, characterized in that, The aforementioned limiting portion is formed such that its circumferential length increases as it moves toward the radially outer side of the aforementioned limiting recess.

Images