Solenoid device

Abstract

The utility model provides a solenoid device which can restrain deviation of a winding starting end portion and a winding ending end portion of a cover body. The solenoid device is provided with a solenoid and a cover body covering the solenoid, the cover body is a plate-shaped component which is wound into a barrel shape, and the plate-shaped component is provided with circumferential opposite faces which are arranged at the winding starting end and the winding ending end of the plate-shaped component and are oppositely arranged in the circumferential direction and are positioned in the circumferential direction.

Description

Technical Field

[0001] The technology of the utility model relates to a solenoid device. Background Art

[0002] The electromagnetic device of Patent Document 1 includes a solenoid for moving a plunger in an axial direction and a cover body covering the solenoid. The raw material of the cover body is formed by punching and blanking the flat plate so that the flat plate has a cylindrical arc forming portion with a plurality of cutout grooves formed on both end sides in the width direction and a mounting forming portion connected to the end of the cylindrical arc forming portion. Then, the cylindrical arc forming portion is bent so that one end of the cylindrical arc forming portion of the raw material of the cover body, that is, the end on the opposite side to the other end connected to the cylindrical mounting forming portion, is located above the other end side connected to the mounting forming portion, and the one end side and the other end side are welded to form a cylindrical cover body.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Utility Model Application Laid-Open No. 06-066005 Utility Model Content

[0006] Issues to be Solved by Utility Models

[0007] In the electromagnetic device, there is no positioning reference for positioning one end of the cylindrical arc forming portion at the other end side. Therefore, after the cylindrical arc forming portion is bent, a cylindrical cover body is formed in which one end of the cylindrical arc forming portion is not parallel to the other end.

[0008] The technology of the present invention is proposed in view of the above-mentioned situation, and an object of the present invention is to provide a solenoid device capable of suppressing deviation between a winding start end portion and a winding end end portion of a cover body.

[0009] Solutions to Solve Problems

[0010] In order to achieve the above-mentioned purpose, the first mode of the solenoid device of the technology of the utility model is characterized in that it comprises a solenoid and a cover body covering the above-mentioned solenoid, the above-mentioned solenoid comprises: a winding tube; a coil, which is wound on the above-mentioned winding tube; a plunger, which is arranged on one axial side of the through hole of the above-mentioned winding tube and moves axially by the excitation of the above-mentioned coil; and a fixed iron core, which is arranged on the other axial side of the above-mentioned through hole and has an axially extending hole for axially guiding the above-mentioned plunger, the above-mentioned cover body is a plate-like component wound into a cylindrical shape, and the above-mentioned plate-like component has circumferentially opposing surfaces at the winding starting end and the winding ending end of the above-mentioned plate-like component that are circumferentially opposed and circumferentially positioned.

[0011] The second mode of the solenoid device of the present invention is characterized in that it comprises a solenoid and a cover body covering the solenoid, wherein the solenoid comprises: a bobbin; a coil wound on the bobbin; a plunger arranged on one axial side of a through hole of the bobbin and moved axially by excitation of the coil; and a fixed iron core arranged on the other axial side of the through hole and having an axially extending hole for axially guiding the plunger, wherein the cover body is a plate-shaped member wound into a cylindrical shape, The plate-like component has mating surfaces at the winding start end and the winding end end of the plate-like component, and the mating surfaces have circumferentially opposing surfaces that are circumferentially opposed and used for circumferential positioning and axially opposing surfaces that are axially opposed and used for axial positioning. The plate-like component has an expanded diameter portion with an enlarged inner diameter at the axial end, and the expanded diameter portion has a plurality of cutout portions that are separated circumferentially and vary in axial width. The portion of the axial end of the plate-like component that is clamped by the cutout portion has an axial limiting portion that is bent toward the axial side.

[0012] Effect of utility model

[0013] The technology of the utility model can suppress the deviation of the winding start end and the winding end of the cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of an example of the solenoid device according to the first embodiment of the technology of the present invention.

[0015] Figure 2 It is a front view showing an example of the plate-shaped member 31 constituting the cover body 30 .

[0016] Figure 3A It is a perspective view showing an example of the cover body 30 .

[0017] Figure 3B 2 is a cross-sectional view showing an example of the enlarged diameter portion 32 provided at the end portion on the negative side in the X-axis direction of the cover body 30 ( Figure 3A AA section view).

[0018] Figure 4 It is a perspective view showing an example of the cover body 42 according to the second embodiment.

[0019] Figure 5 It is a perspective view showing an example of the cover body 50 according to the third embodiment.

[0020] Figure 6 It is a front view showing an example of the plate-shaped member 31 according to the first modification.

[0021] Figure 7 It is a front view showing an example of the plate-shaped member 31 according to the second modification.

[0022] Figure 8 It is a front view showing an example of the plate-shaped member 31A of the cover body 50B according to the third modification.

[0023] Fig. 9 This is a front view showing an example of a state in which the plate-shaped member 31 and the connection portions 82 and 84 are punched out from the plate material.

[0024] Fig.10 This is a front view showing an example of a state in which the plate-shaped member 31A is rolled up.

[0025] Fig.11 It is a perspective view showing an example of the cover body 50B.

[0026] Explanation of symbols

[0027] 100 solenoid device; 12 bobbin; 14 coil; 16 plunger; 18 fixed iron core; 30 cover; 31 plate-like component; 3839A winding start end; 3839B winding end; 32, 33 diameter expansion portion; 34A, 34B, 35A, 35B, 35C slit portion; 30U, 30D bending portion; 3839 mating surface; 38C1~38C3, 38D1~38D3, 39C1, 39C2, 39D1, 39D2 circumferential opposing surfaces; 39C11, 39C12, 39C21, 39C22, 39D11, 39D12, 39D21, 39D22 axial opposing surfaces; 82, 84 connecting portion; 72, 74 punch frame cutting and cutting surface. DETAILED DESCRIPTION

[0028] Hereinafter, embodiments of the technology of the present invention will be described with reference to the drawings.

[0029] For the sake of convenience, the following three axes orthogonal to each other are set as X-axis, Y-axis and Z-axis. As an example, the XY plane including the X-axis and the Y-axis is horizontal, and the Z-axis is vertical. Alternatively, the X-axis may be vertical, and the XZ plane including the Y-axis and the Z-axis may be horizontal.

[0030] In addition, the X-axis direction is the “axis O direction”, the radial direction centered on the axis O is referred to as the “radial direction”, and the circumferential direction centered on the axis O is referred to as the “circumferential direction C”.

[0031] Furthermore, the positive side in the X-axis direction is “one side in the axis O direction”, and the negative side in the X-axis direction is “the other side in the axis O direction”.

[0032] In this specification, the up-down direction, horizontal direction, upper side and lower side are only used to describe the relative positional relationship of each part. Therefore, the actual positional relationship of each part may be different from the positional relationship shown by these terms. (Structure)

[0033] Reference Figure 1 to Figure 3B , the structure of an embodiment of the solenoid device of the technology of the present utility model is described. Figure 1 It is a cross-sectional view of an example of the solenoid device according to the first embodiment of the technology of the present invention. Figure 2 It is a front view showing an example of the plate-shaped member 31 constituting the cover body 30 . Figure 3A It is a perspective view showing an example of the cover body 30 . Figure 3B 2 is a cross-sectional view showing an example of the enlarged diameter portion 32 provided at the end portion of the cover body 30 on the negative side in the X-axis direction ( Figure 3A AA section view).

[0034] like Figure 1 As shown, the solenoid device 100 includes a solenoid 1 , a valve mechanism 10 attached to the positive side of the solenoid 1 in the X-axis direction, and a cover 30 .

[0035] The solenoid device 100 is mounted on, for example, an automobile, and is used as a switching device that switches between passage and cutoff of a fluid Q such as liquid or gas.

[0036] (solenoid 1)

[0037] The solenoid 1 includes a bobbin 2 , a plunger 103 , a coil 4 , a yoke (fixed iron core) 5 , an external mounting bracket 7 , and a coil spring (biasing member) 8 .

[0038] The bobbin 2 is a cylindrical member having a through hole 21. The through hole 21 penetrates the bobbin 2 along the X-axis direction. In addition, the diameter of the through hole 21 is substantially constant along the X-axis direction.

[0039] The coil 14 is formed by winding a conductive wire around the outer peripheral portion 22 of the bobbin 2 .

[0040] The plunger 103 is disposed on the positive side in the X-axis direction in the through hole 21 of the bobbin 2 , and moves in the X-axis direction by the excitation of the coil 14 .

[0041] The yoke 5 is disposed on the negative side in the X-axis direction in the through hole 21 of the bobbin 2 , and has a hole for guiding the plunger 103 in the X-axis direction.

[0042] The bobbin 2 is made of various resin materials such as polyester and polyimide.

[0043] The plunger 103 is inserted into the through hole 21 of the bobbin 2 from the positive side in the X-axis direction, and the yoke 5 is inserted from the negative side in the X-axis direction.

[0044] The plunger 103 and the yoke 5 are each made of a magnetic material (a metal material having magnetism) such as iron.

[0045] As the coil 4 is energized, a magnetic field (magnetic force) is generated, thereby exciting the yoke 5. Then, the plunger 103 is attracted by the excited yoke 5. As a result, the plunger 103 can be moved in the X-axis direction. That is, the plunger 103 is supported by the bobbin 2 in a manner that allows it to move in the X-axis direction.

[0046] The yoke 5 has a fixing portion 59 protruding radially outward at its end on the negative side in the X-axis direction. The fixing portion 59 contacts the bobbin 2, so that the yoke 5 is positioned relative to the bobbin 2 (coil 4) in the X-axis direction.

[0047] The yoke 5 has a recessed portion 51 recessed toward the negative side in the X-axis direction on its surface on the positive side in the X-axis direction. The recessed portion 51 includes a bottom surface 511 orthogonal to the axis O (X-axis) and an inner peripheral surface (second inclined surface) 512 .

[0048] The inner peripheral surface 512 is inclined relative to the axis O so as to be separated from the axis O from the negative side to the positive side in the X-axis direction. In other words, the diameter of the recessed portion 51 gradually increases from the negative side to the positive side in the X-axis direction.

[0049] A washer 61 is disposed in a compressed state between the fixing portion 59 of the yoke 5 and the bobbin 2 , and a washer 62 is disposed in a compressed state between the external mounting bracket 7 and the bobbin 2 .

[0050] The washers 61 and 62 are annular and are arranged concentrically with the through hole 21 of the bobbin 2. The presence of the washers 61 and 62 hermetically seals the space between the bobbin 2 and the fixing portion 59 and the external mounting bracket 7.

[0051] The gaskets 61 and 62 are made of an elastic material such as polyurethane rubber.

[0052] The plunger 103 has a recessed portion 131 on its surface on the positive side in the X-axis direction, which is recessed toward the negative side in the X-axis direction. The slide valve 130 (small diameter portion 302) of the valve mechanism 10 is pressed into the recessed portion 131. Thus, the slide valve 130 is connected to the plunger 103 and can move along the X-axis direction together with the plunger 103.

[0053] The plunger 103 has a recessed portion 132 recessed toward the positive side in the X-axis direction on the surface on the negative side in the X-axis direction.

[0054] In this embodiment, the recess 131 and the recess 132 are connected by a through hole that penetrates along the X-axis direction of the plunger 103. The diameter of the through hole is set smaller than the diameters of the recess 131 and the recess 132. Therefore, a protrusion 133 is formed at the boundary between the recess 131 and the recess 132.

[0055] The plunger 103 has an outer peripheral surface (first inclined surface) 134 at the end portion on the negative side in the X-axis direction. The outer peripheral surface 134 is inclined relative to the axis O so as to approach the axis O from the positive side toward the negative side in the X-axis direction. In other words, the outer diameter of the end portion on the negative side in the X-axis direction of the plunger 103 gradually decreases from the positive side in the X-axis direction toward the negative side.

[0056] When the plunger 103 is closest to the yoke 5, the end of the plunger 103 on the negative side in the X-axis direction is located in the recess 51 of the yoke 5. Furthermore, the outer peripheral surface 134 of the plunger 103 faces the inner peripheral surface 512 of the recess 51. With this structure, interference between the plunger 103 and the yoke 5 is unlikely to occur, and they can be smoothly approached and separated.

[0057] A coil spring 8 is disposed between the plunger 103 and the yoke 5 to bias the plunger 103 toward the positive side in the X-axis direction.

[0058] The positive side of the coil spring 8 in the X-axis direction is accommodated in the recess 132 of the plunger 103 , and the negative side of the coil spring 8 in the X-axis direction is accommodated in the recess 51 of the yoke 5 .

[0059] In the non-excited state of the yoke 5, the coil spring 8 can move the plunger 103 toward the positive side in the X-axis direction. Therefore, by switching the yoke 5 between the excited state and the non-excited state, the plunger 103 can be moved alternately to the negative side and the positive side (i.e., reciprocated) along the X-axis direction.

[0060] In the present embodiment, the recess 132 opens at the opening 321 toward the negative side in the X-axis direction of the plunger 103 , and its diameter gradually decreases from the opening 321 side toward the bottom 322 side (along the X-axis direction).

[0061] In this structure, the end of the coil spring 8 on the positive side in the X-axis direction contacts the protrusion 133 and is fixed near the bottom 322 of the recess 132 of the plunger 103. On the other hand, the end of the coil spring 8 on the negative side in the X-axis direction contacts the bottom surface 511 of the recess 51 of the yoke 5 but is not fixed, and can move (displace) in a direction orthogonal to the axis O. That is, the end of the coil spring 8 on the positive side in the X-axis direction is a fixed end, and the end on the negative side in the X-axis direction is a free end. As a result, the coil spring 8 is cantilevered by the plunger 103, so even if the coil spring 8 is tilted, it is easy to smoothly return to the original position.

[0062] The cover 30 accommodates the bobbin 2 , the plunger 103 , the coil 4 , the yoke 5 , the external mounting bracket 7 , the coil spring 8 , etc. The cover 30 is connected to a connector member 92 .

[0063] The cover body 30 is a cylindrical member extending in the X-axis direction. In addition, the two opening edge portions of the cover body 30 are provided with a bent portion 30U and a bent portion 30D bent toward the axis O. The bent portion 30U and the bent portion 30D cover the outer peripheral edge portion of the fixing portion 202 of the nozzle 20 and the outer peripheral edge portion of the fixing portion 59 of the yoke 5. Thus, when the bobbin 2, the plunger 103, the coil 4, the yoke 5, the external mounting bracket 7, the coil spring 8, etc. are stored in the cover body 30, each part is fixed and assembled into the solenoid 1.

[0064] The cover 30 , like the yoke 5 , is made of a magnetic material such as iron.

[0065] A connector (not shown) for supplying electricity to the coil 4 is connected to the connector member 92. The connector member 92 is made of, for example, a resin material, similarly to the bobbin 2.

[0066] The valve mechanism 10 is attached to the positive side of the solenoid 1 in the X-axis direction.

[0067] (Valve mechanism 10)

[0068] The valve mechanism 10 includes a cylindrical nozzle 20 and a cylindrical spool 130 disposed in the nozzle 20 so as to be movable in the X-axis direction.

[0069] The nozzle 20 has a through hole (first through hole) 200 penetrating in the X-axis direction and a side hole (first side hole) 201 penetrating the cylinder wall and opening radially outward. The spool 130 is inserted into the through hole 200 of the nozzle 20 .

[0070] The nozzle 20 is made of a non-magnetic material (a metal material having no magnetism) such as stainless steel, for example.

[0071] In addition, a sealing member 140 is disposed on the outer periphery of the nozzle 20. The sealing member 140 is an elastic annular member, and is made of an elastic material such as urethane rubber.

[0072] The nozzle 20 has a fixing portion 202 protruding radially outward at the end on the negative side in the X-axis direction. The bent portion 30D formed by bending the opening edge portion on the positive side in the X-axis direction of the cover 30 of the solenoid 1 is located at the outer peripheral edge of the fixing portion 202. Thus, the valve mechanism 10 is connected to the solenoid 1.

[0073] A gasket 150 is disposed in a compressed state between the fixing portion 202 and the solenoid 1 (external mounting bracket 7). This provides an airtight seal between the valve mechanism 10 and the solenoid 1. The gasket 150 is made of an elastic material such as polyurethane rubber.

[0074] The nozzle 20 further includes a step portion (second step portion) 602 formed by the inner peripheral surface of the end portion on the positive side in the X-axis direction protruding radially inward. On the other hand, the slide valve 130 disposed in the nozzle 20 includes a step portion (first step portion) 601 formed by the outer peripheral surface of the end portion on the positive side in the X-axis direction being recessed radially inward.

[0075] According to this structure, when the slide valve 130 moves toward the positive side in the X-axis direction, the step portion 601 abuts against the step portion 602, thereby restricting the slide valve 130 from further moving toward the positive side in the X-axis direction. That is, the step portion 601 and the step portion 602 constitute the detachment prevention structure 160 that prevents the slide valve 130 from detaching from the nozzle 20.

[0076] The slide valve 130 includes a through hole (second through hole) 300 penetrating in the X-axis direction.

[0077] The slide valve 130 includes a small diameter portion 302 and a large diameter portion 301 located on the positive side in the X-axis direction relative to the small diameter portion 302. Therefore, a step portion 303 is present between the large diameter portion 301 and the small diameter portion 302.

[0078] The large diameter portion 301 has a side hole (second side hole) 3011 that penetrates the cylindrical wall and opens radially outward.

[0079] According to this structure, the sliding valve 130 can be moved along the X-axis direction, so that when the sliding valve 130 is separated from the yoke 5, the side hole 3011 is connected to the side hole 201 (connected state), and when the sliding valve 130 is in contact with the yoke 5, the connection with the side hole 201 is cut off (non-connected state).

[0080] In other words, the slide valve 130 can change the opening area of ​​the side hole 201. Thus, the slide valve 130 can adjust the flow rate of the fluid Q that flows in through the side holes 201 and 3011 and then passes through the through holes 300 and 200 toward the positive side in the X-axis direction.

[0081] The outer diameter and inner diameter of the large diameter portion 301 are set larger than those of the small diameter portion 302. By providing the large diameter portion 301, the diameter of the slide valve 130 can be increased, thereby increasing the flow rate of the fluid Q passing through the nozzle 20 (valve mechanism 10).

[0082] On the other hand, the small diameter portion 302 is pressed into the recess 132 of the plunger 103, and the slide valve 130 is connected to the plunger 103. As a result, the slide valve 130 can move in the X-axis direction together with the plunger 103. By providing the small diameter portion 302, the slide valve 130 can be connected to the solenoid 1 (plunger 103) without increasing the size of the solenoid 1.

[0083] In addition, the small diameter portion 302 is disposed apart from the nozzle 20 , and a space 203 is formed between the small diameter portion 302 and the nozzle 20 .

[0084] The small diameter portion 302 includes a side hole (third side hole) 3021 that penetrates the cylinder wall and opens radially outward. The side hole 3021 is connected to the space 203 .

[0085] Therefore, part of the fluid Q flowing in through the side hole 201 and the side hole 3011 passes through the through hole 300 toward the negative side in the X-axis direction and flows into the space 203 through the side hole 3021. Figure 1 As shown by the thick arrow in , the pressures generated by the fluid Q applied to the positive and negative surfaces of the step portion 303 in the X-axis direction can be equalized (the pressure difference can be offset). Therefore, the load generated by the fluid Q on the slide valve 130 can be reduced, and the increase in the required thrust of the solenoid 1 can be suppressed.

[0086] In the technology of the present invention, the slide valve 130 is configured to protrude from the nozzle 20 in the connected state. With this structure, the pressure around the portion of the slide valve 130 protruding from the nozzle 20 is reduced by the flow of the fluid Q. Therefore, it is possible to prevent contaminants from entering between the nozzle 20 and the slide valve 130. Even if contaminants enter between the nozzle 20 and the slide valve 130, they can be discharged smoothly due to the reduced pressure around the protruding portion of the slide valve 130. As a result, the slide valve 130 can move smoothly.

[0087] In this state (communication state), the step portion 601 of the slide valve 130 abuts against the step portion 602 , thereby preventing the slide valve 130 from being separated from the nozzle 20 .

[0088] In addition, in the present embodiment, the slide valve 130 is configured to protrude from the nozzle 20 even in the non-communication state. With this configuration, contaminants are less likely to enter between the nozzle 20 and the slide valve 130 .

[0089] In addition, the nozzle 20 has a groove (breathing groove) 170 extending from the end on the positive side in the X-axis direction to the step portion 602 in the X-axis direction on its inner peripheral surface. By providing the groove 170, when the slide valve 130 moves toward the solenoid 1 side, the fluid Q is supplied to the groove 170, so that the negative pressure between the nozzle 20 and the slide valve 130 is released, and the increase in the movement resistance of the slide valve 130 can be suppressed.

[0090] In the present embodiment, the four grooves 170 are arranged at substantially equal intervals along the circumferential direction of the nozzle 20. This can further enhance the above-mentioned effects.

[0091] In addition, the four grooves 170 may not be arranged at equal intervals along the circumferential direction of the nozzle 20. In addition, the number of grooves 170 is not limited to four, and may be one, two, three, or five or more.

[0092] In the slide valve 130 of such a structure, the outer diameter of the large diameter portion 301 is set to be substantially equal to the inner diameter of the nozzle 20. Thus, it is possible to prevent or suppress the fluid Q from flowing into the space 203 through the gap between the large diameter portion 301 and the nozzle 20, and the pressure generated by the fluid Q applied to the surface on the positive side and the negative side of the step portion 303 in the X-axis direction can be more reliably equalized.

[0093] The diameter of the side hole 3021 is set smaller than the diameter of the side hole 201. This ensures smooth flow of the fluid Q that flows in through the side holes 201 and 3011 and then passes through the through holes 300 and 200 toward the positive side in the X-axis direction.

[0094] In addition, in the present embodiment, the diameter of the side hole 3011 is set larger than the diameter of the side hole 3021 and the diameter of the side hole 201. Thereby, the above-mentioned effect can be obtained more favorably.

[0095] In addition, the slide valve 130 is made of a non-magnetic material such as stainless steel. In this case, since the slide valve 130 is not excited (magnetized), even if contaminants such as iron powder are mixed in the fluid Q, it is difficult to be adsorbed on the slide valve 130, which can prevent the contaminants from hindering the smooth operation of the slide valve 130.

[0096] (Hood body 30)

[0097] The cover body 30 will be described. The cover body 30 is a plate-shaped member 31 wound in a cylindrical shape.

[0098] like Figure 2 As shown, the plate-like member 31 includes a winding start end 3839A and a winding end end 3839B. Figure 2 FIG. 3 shows the plate-like member 31 before being wound into a cylindrical shape. Figure 3A As shown, the cover body 30 is formed by winding the plate-like member 31 into a cylindrical shape in a state where the winding start end 3839A and the winding end end 3839B are in contact with each other. Figure 1 The negative side of the cover body 30 in the X-axis direction is Figure 2 On the upper side of the paper, Figure 1 The positive side of the cover body 30 in the X-axis direction is Figure 2 Therefore, Figure 2 The upper side of the paper is called the negative side of the X-axis direction. Figure 2 The lower side of the paper in the Z direction is called the negative side.

[0099] The plate-shaped member 31 is an example of the “plate-shaped member” of the technology of the present invention. The cover body 30 is an example of the “cover body” of the technology of the present invention.

[0100] like Figure 2 and Figure 3A As shown, the plate-like member 31 includes an expanded diameter portion 32 at the negative end in the X-axis direction. The plate-like member 31 includes an expanded diameter portion 33 at the positive end in the X-axis direction. The plate-like member 31 includes a main body portion 332 between the expanded diameter portions 32 and 33.

[0101] The expanded diameter portion 32 and the expanded diameter portion 33 are examples of the “expanded diameter portion” in the technology of the present invention.

[0102] like Figure 3B As shown, the thickness of the expanded diameter portion 32 is thinner than the thickness of the main body portion 332. Specifically, in the state where the plate-like member 31 is wound into a cylindrical shape as described above, the radius R2 centered on the axis O to the inner circumference of the expanded diameter portion 32 is longer than the radius R1 centered on the axis O to the inner circumference of the main body portion 332. There is no step at the connection portion between the expanded diameter portion 32 and the outer circumference of the main body portion 332. In contrast, there is a step at the connection portion between the expanded diameter portion 32 and the inner circumference of the main body portion 332. The expanded diameter portion 32 is formed by flattening the end side on the negative side in the X-axis direction.

[0103] like Figure 2 and Figure 3A As shown, the diameter expansion portion 32 includes a slit portion 34A and a slit portion 34B. In the present embodiment, the diameter expansion portion 32 includes two slit portions 34A and 34B. For example, the slit portion 34A and the slit portion 34B each have a shape in which the width increases as it moves toward the negative side in the X-axis direction. Figure 2 As shown, when the plate-like member 31 before being rolled into a tube is viewed in a direction perpendicular to the plate surface of the plate-like member 31 , the slit portion 34A and the slit portion 34B each have a fan-shaped or V-shaped shape.

[0104] The slit portions 34A are divided before the plate-like member 31 is rolled into a cylindrical shape, and the slit portions 34A are formed when the plate-like member 31 is rolled into a cylindrical shape.

[0105] The expanded diameter portion 32 includes an insertion portion 36 for inserting the connector member 92 between the slit portions 34A and 34B. The insertion portion 36 has a rectangular shape cut from the negative end of the expanded diameter portion 32 in the X-axis direction to a part of the positive upper body portion 332.

[0106] like Figure 1 As shown, the expanded diameter portion 32 includes a bent portion 30U bent toward the axis O between two adjacent slit portions 34A and 34B.

[0107] The structure of the expanded diameter portion 33 is the same as that of the expanded diameter portion 32, so the detailed description thereof is omitted and only the different parts are described. The expanded diameter portion 32 includes two slit portions 34A and 34B, whereas the expanded diameter portion 33 includes three slit portions 35A, 35B, and 35C having the same structure as the slit portions 34A and 34B, which is different. In addition, the expanded diameter portion 33 includes an insertion portion 37 for inserting the external mounting bracket 7 between the slit portions 35B and the slit portions 35B. The insertion portion 37 has a rectangular shape cut from the end of the positive side of the expanded diameter portion 33 in the X-axis direction to a part of the upper main body portion 332 on the negative side.

[0108] In addition, the three slit portions 35A, 35B, and 35C of the expanded diameter portion 32 include a bent portion 30D bent toward the axis O between two adjacent slit portions (see also FIG. Figure 1 ).

[0109] The slits 34A, 34B, 35A, 35B, and 35C are examples of the “slits” of the present invention. The bent portions 30U and 30D are examples of the “bent portions” of the present invention.

[0110] like Figure 3A As shown, the winding start end 3839A and the winding end end 3839B are opposed to each other in the circumferential direction C when the plate-like member 31 is wound into a cylindrical shape, and have circumferentially opposed surfaces (i.e., end surfaces) that serve as a reference for positioning in the circumferential direction C. Specifically, Figure 2 As shown, the winding start end portion 3839A has a plurality of end faces 38A1, end face 38A2, and end face 38A3 that serve as references for positioning in the circumferential direction C. The winding end portion 3839B has an end face 38B1, end face 38B2, and end face 38B3 that serve as references for positioning in the circumferential direction C. The plate-like member 31 is wound into a cylindrical shape in a state where the winding start end portion 3839A and the winding end end portion 3839B are in contact with each other, whereby the end face 38A1 and the end face 38B1, the end face 38A2 and the end face 38B2, and the end face 38A3 and the end face 38B3 are respectively in contact with each other in an opposing state. In this way, the end faces ((38A1, 38B1), (38A2, 38B2), (38A3, 38B3)) are in contact with each other in an opposing state, as shown in FIG. Figure 3A As shown, the positions of the circumferential direction C of the winding start end 3839A and the winding end end 3839B can be determined.

[0111] The end faces 38A1 , 38A2 , and 38A3 and the end faces 38B1 , 38B2 , and 38B3 are examples of “circumferentially facing faces” in the technology of the present invention.

[0112] Either one of the winding start end 3839A and the winding end 3839B has at least one engaged portion that serves as a reference for multiple positioning in the X-axis direction and the circumferential direction C. In the present embodiment, the winding start end 3839A has a plurality of engaged portions 39A1 and an engaged portion 39A2. Either the other of the winding start end 3839A and the winding end 3839B has at least one engaged portion that serves as a reference for multiple positioning in the X-axis direction and the circumferential direction C. In the present embodiment, the winding end 3839B has a plurality of engaged portions 39B1 and an engaged portion 39B2.

[0113] Here, the fitting part refers to a part that fits into the fitted part, and the fitted part refers to a part that is fitted through the fitting part. The state where the fitting part fits into the fitted part includes not only the case where the boundary between the fitted part and the fitting part coincides, but also the case where there is some play in the boundary between the fitted part and the fitting part (loose fitting).

[0114] The fitting portion 39A1 and the fitted portion 39B1 have a shape in which the fitting portion 39A1 and the fitted portion 39B1 fit together. The fitting portion 39A1 and the fitted portion 39B1 are shaped such that the fitting portion 39A1 can fit together with the fitted portion 39B1 in the thickness direction of the plate-like member 31, and the fitting portion 39A1 cannot fit together with the fitted portion 39B1 in the direction perpendicular to the thickness direction and in which the winding start end 3839A and the winding end end 3839B are close (i.e., the circumferential direction C). Specifically, the fitted portion 39B1 is a cutout portion cut in such a way that the width in the X-axis direction becomes longer as it advances from the winding end end 3839B toward the inner side of the plate-like member 31 (i.e., the circumferential direction C). The fitting portion 39A1 is a protruding portion that protrudes from the winding start end portion 3839A in the circumferential direction C (a direction approaching the winding end end portion 3839B), and the width in the X-axis direction increases as the winding start end portion 3839A becomes farther away.

[0115] The fitting portion 39A2 and the fitted portion 39B2 have the same structure as the fitting portion 39A1 and the fitted portion 39B1 , and thus description thereof is omitted.

[0116] The plate-like member 31 is wound into a cylindrical shape in a state where the winding start end 3839A and the winding end end 3839B are in contact, specifically, in a state where the fitting portion 39A1 is fitted with the fitted portion 39B1 and the fitting portion 39A2 is fitted with the fitted portion 39B2. When the plate-like member 31 is wound in this way, the positions of the winding start end 3839A and the winding end end 3839B in the circumferential direction C are determined. In addition, in this case, the positions of the winding start end 3839A and the winding end end 3839B in the X-axis direction are also determined.

[0117] The fitting parts 39A1 and 39A2 are examples of the "fitting parts" and "protruding parts" of the technology of the present invention. The fitted parts 39B1 and 39B2 are examples of the "fitted parts" and "notched parts" of the technology of the present invention.

[0118] (Method for manufacturing a solenoid device)

[0119] Next, a method for manufacturing the solenoid device configured as described above will be described.

[0120] In the first step, the plate-like member 31 including the expanded diameter portions 32 , 33 , the insertion portions 36 , 37 , and the slit portions 34A, 34B, 35A, 35B, and 35C is manufactured.

[0121] In the second step, the cover body 30 is formed by winding the plate-like member 31 into a cylindrical shape so that the winding start end 3839A and the winding end end 3839B are in contact with each other.

[0122] In the third step, the solenoid 1 is positioned inside the housing 30 .

[0123] In the fourth step, the bent portion 30U and the bent portion 30D are formed, and the solenoid 1 is fixed inside the cover 30 .

[0124] Specifically, the cover 30 is formed by winding the plate-like member 31 into a cylindrical shape with the solenoid 1 positioned inside so that the winding start end 3839A and the winding end end 3839B are in contact with each other.

[0125] (Effect)

[0126] As described above, the plate-like member 31 is wound into a cylindrical shape in a state where the winding start end 3839A and the winding end end 3839B are in contact with each other, whereby the end faces 38A1 and 38B1, the end faces 38A2 and 38B2, and the end faces 38A3 and 38B3 are in contact with each other in an opposed state. Thus, the positions of the winding start end 3839A and the winding end end 3839B in the circumferential direction C are determined.

[0127] When the plate member 31 is rolled into a cylindrical shape with the fitting portion 39A1 fitted with the fitted portion 39B1 and the fitting portion 39A2 fitted with the fitted portion 39B2 , the positions of the winding start end 3839A and the winding end end 3839B in the X-axis direction and the circumferential direction C are determined.

[0128] As described above, in the first embodiment, it is possible to suppress the deviation between the winding start end portion 3839A and the winding end portion 3839B of the cover body.

[0129] The expanded diameter portion 32 includes two slit portions 34A and 34B, and the expanded diameter portion 33 includes three slit portions 35A to 35C. Therefore, the first embodiment can reduce the amount and load of collapse of the expanded diameter portions 32 and 33 compared to a case without these slit portions.

[0130] If the crushing load is relatively large, the load is applied to the parts other than the enlarged diameter parts 32 and 33 when assembling the solenoid 1, which may sometimes deteriorate the assembly accuracy. In addition, if the crushing load is relatively large, the positional deviation of the workpiece caused by it is likely to occur, making it difficult to ensure dimensional accuracy, and it will also become a major cause of accelerated mold wear. However, in this embodiment, as described above, the crushing load can be made relatively small, thereby improving the assembly accuracy and dimensional accuracy of the solenoid 1, and suppressing mold wear.

[0131] In addition, in the first embodiment, the length of the bent portion 30U and the bent portion 30D around the axis O can be reduced in the assembly process of the solenoid 1. Therefore, the caulking load for constituting the bent portion can be reduced.

[0132] [Second embodiment]

[0133] (structure)

[0134] Next, a second embodiment of the technology of the present invention will be described. The second embodiment has the same structure as the first embodiment, so the same reference numerals are given to the same parts and their description is omitted, and the different parts will be described.

[0135] Figure 4 2 is a perspective view showing an example of the cover body 42 of the second embodiment. Figure 4 As shown, the enlarged diameter portion 32 of the cover body 40 includes three slit portions 44A, 44B, and 44C having the same structure as the slit portions 34A and 34B of the first embodiment.

[0136] (Effect)

[0137] The expanded diameter portion 32 has three slit portions 44A, slit portion 44B, and slit portion 44C, one more than the first embodiment. The second embodiment can reduce the amount of crushing and the crushing load of the expanded diameter portion 32 compared to the first embodiment. In the second embodiment, the assembly accuracy and dimensional accuracy of the solenoid 1 can be improved compared to the first embodiment, and mold wear can be suppressed. The second embodiment can reduce the caulking load for forming the bending portion compared to the first embodiment.

[0138] [Third Embodiment]

[0139] (structure)

[0140] Next, a third embodiment of the technology of the present invention will be described. The third embodiment has the same structure as the first embodiment, so the same reference numerals are given to the same parts and their description is omitted, and the different parts will be described.

[0141] Figure 5 1 is a perspective view showing an example of the cover body 50 according to the third embodiment. Figure 5 As shown, the enlarged diameter portion 32 of the cover body 50 includes five slit portions 54A, 54B, 54C, 54D, and 54E having the same structure as the slit portions 34A and 34B of the first embodiment.

[0142] The enlarged diameter portion 33 of the cover body 50 includes five slit portions 55A, 55B, 55C, 55D, and 55E having the same structure as the slit portions 35A to 35C of the first embodiment.

[0143] (Effect)

[0144] The expanded diameter portion 32 includes five slit portions 54A, 54B, 54C, 54D, and 54E, two more than in the first embodiment. The expanded diameter portion 33 includes five slit portions 55A, 55B, 55C, 55D, and 55E, two more than in the first embodiment. The third embodiment can reduce the amount of crushing and the crushing load of the expanded diameter portions 32, 32 compared to the first embodiment. In the third embodiment, the assembly accuracy and dimensional accuracy of the solenoid 1 can be improved compared to the first embodiment, and mold wear can be suppressed. The third embodiment can reduce the riveting load for forming the bending portion compared to the first embodiment.

[0145] [Modifications]

[0146] Next, the modified examples of the technology of the utility model are described. The structures of the first and second modified examples have the same parts as the first embodiment, so the same reference numerals are marked on the same parts and their descriptions are omitted, and the different parts are described. The positioning reference parts of the following modified examples are different from those of the first embodiment.

[0147] (First Modification)

[0148] Figure 6 FIG. 2 is a front view showing an example of a plate-like member 60 according to a first modified example. Figure 6 As shown, the winding start end 3839A of the plate-shaped member 60 includes fitting portions 69A1 and 69A2 instead of the fitting portions 39A1 and 39A2 of the first embodiment, and the winding end 3839B includes fitted portions 69B1 and 69B2 instead of the fitted portions 39B1 and 39B2.

[0149] The interlocking portion 39A1 and the interlocked portion 39B1 of the first embodiment are shaped as follows: the interlocking portion 39A1 can interlock with the interlocked portion 39B1 in the thickness direction of the plate-like part 31, and the interlocking portion 39A1 cannot interlock with the interlocked portion 39B1 in a direction perpendicular to the thickness direction and close to the winding start end 3839A and the winding end end 3838B.

[0150] In contrast, in the first modification, the fitting portion 69A1 and the fitted portion 69B1 are shaped such that the fitting portion 69A1 can fit with the fitted portion 69B1 in the thickness direction of the plate member 60 and in the approach direction.

[0151] The fitting portion 69A1 includes a protrusion that protrudes from the winding start end 3839A in the circumferential direction C. The width of the protrusion in the X-axis direction does not change (that is, remains the same) as the winding start end 3839A becomes farther away. The fitted portion 69B1 includes a cutout that is cut at the winding end 3839B. The width of the cutout in the X-axis direction does not change (that is, remains the same) as it advances toward the inner side (that is, in the circumferential direction C) of the plate-like member 60.

[0152] The fitting portion 69A2 and the fitted portion 69B1 have the same shapes as the fitting portion 69A1 and the fitted portion 69B1 , and therefore detailed description thereof will be omitted.

[0153] However, the fitted portion 69B1 and the fitting portion 69A1 include facing surfaces in the axis O direction (X-axis direction) that face each other in the axial direction and perform axial positioning.

[0154] Specifically, the fitting portion 69A1 includes an axially facing surface 69a11, a circumferentially facing surface 69a12, and an axially facing surface 69a11.

[0155] The fitted portion 69B1 includes an axially facing surface 69b11 facing the axially facing surface 69a11, a circumferentially facing surface 69b12 facing the circumferentially facing surface 69a12, and an axially facing surface 69b11 facing the axially facing surface 69a11.

[0156] As described above, the end faces 38A1, 38A2, and 38A3 and the end faces 38B1, 38B2, and 38B3 are also circumferentially opposing faces.

[0157] As described above, the winding start end portion 3839A has five circumferentially opposed surfaces and four axially opposed surfaces. In addition, the winding end portion 3839B also has five circumferentially opposed surfaces and four axially opposed surfaces.

[0158] In the first variant, the winding start end 3839A and the winding end end 3839B have two interlocking portions (69A1, 69A2) and two interlocked portions (69B1, interlocked portion 69B2), five circumferentially opposing surfaces, and four axially opposing surfaces. The technology of the utility model is not limited to this. For example, the winding start end 3839A and the winding end end 3839B may also have one interlocking portion and one interlocked portion, three circumferentially opposing surfaces, and two axially opposing surfaces. As a case where the winding start end 3839A has three circumferentially opposing surfaces and two axially opposing surfaces, for example, the end face 38A2 is discharged to become the same surface as the circumferentially opposing surface of the interlocking portion 69A1 and the circumferentially opposing surface of the interlocking portion 69A2. The end face 38B2 is cut off to become the same surface as the circumferentially opposing surface of the interlocked portion 69B1 and the circumferentially opposing surface of the interlocked portion 69B2.

[0159] (Second Modification)

[0160] Figure 7 FIG. 2 is a front view showing an example of a plate-like member 70 according to a second modified example. Figure 7 As shown, the winding start end 3839A of the plate member 70 includes the fitting portion 39A1 of the first embodiment and the fitted portion 69B2 of the first modification. The winding end 3839B of the plate member 31 includes the fitted portion 39B1 of the first embodiment and the fitting portion 69A2 of the first modification.

[0161] (Third Modification)

[0162] The structure of the third modification example is similar to that of the third embodiment (see Figure 5 ) are the same parts, so the same figure marks are marked on the same parts and their descriptions are omitted, and the different parts are described.

[0163] Figure 8 It is a front view showing an example of the plate-shaped member 31A of the cover body 50B according to the third modification. Fig. 9 This is a front view showing an example of a state in which the plate-shaped member 31A, the connecting portions 82 and 84 , and the portion 81 other than the frame body 80 are punched out from a plate material. Fig.10 This is a front view showing an example of a cover body 50B formed by rolling up the plate-like member 31A. Fig.11 It is a perspective view showing an example of the cover body 50B.

[0164] Fig.11 The slit portions 54A, 54B, 54C, 54D, and 54E provided in the enlarged diameter portion 32 of the cover body 50B shown in the figure and the slit portions 55A, 55B, 55C, 55D, and 55E provided in the enlarged diameter portion 33 are examples of the “cutout portions” of the technology of the present invention.

[0165] Fig.11 The portion of the cover body 50B shown in the figure sandwiched by the slit portions 54A, 54B, 54C, 54D, 54E and the portion of the enlarged diameter portion 33 sandwiched by the slit portions 55A, 55B, 55C, 55D, 55E are bent toward the axis O, thereby forming bent portions 30U, 30D (see also Figure 2 ) The bent portions 30U and 30D are examples of the “axial direction restricting portion” of the technology of the present invention.

[0166] The portions sandwiched by the slit portions 54A, 54B, 54C, 54D, and 54E are the following first to fifth portions. The first portion is the portion between the slit portion 54A and the slit portion 54B in the enlarged diameter portion 32. The second portion is the portion between the slit portion 54B and the slit portion 54C in the enlarged diameter portion 32. The third portion is the two portions between the slit portion 54C and the slit portion 54D in the enlarged diameter portion 32 excluding the insertion portion 36. The fourth portion is the portion between the slit portion 54D and the slit portion 54E in the enlarged diameter portion 32. The fifth portion is the portion between the slit portion 54E and the slit portion 54A in the enlarged diameter portion 32.

[0167] The portions sandwiched by the slit portions 55A, 55B, 55C, 55D, and 55E are the following sixth to tenth portions. The sixth portion is the portion between the slit portion 55A and the slit portion 55B in the diameter expansion portion 33. The seventh portion is the two portions between the slit portion 55B and the slit portion 55C in the diameter expansion portion 33 excluding the insertion portion 37. The eighth portion is the portion between the slit portion 55C and the slit portion 55D in the diameter expansion portion 33. The ninth portion is the portion between the slit portion 55D and the slit portion 55E in the diameter expansion portion 33. The tenth portion is the portion between the slit portion 55E and the slit portion 55A in the diameter expansion portion 33.

[0168] (Hood body 50B)

[0169] The cover body 50B will be described. The cover body 50B is the plate-shaped member 31A wound in a cylindrical shape.

[0170] like Figure 8 As shown, the plate-like member 31A has a winding start end 3839C and a winding end 3839D. Figure 8 FIG. 3 shows the plate-shaped member 31A before being wound into a cylindrical shape. Fig.10 and Fig.11 As shown, the cover body 50B is formed by winding the plate-like member 31A into a cylindrical shape so that the winding start end 3839C and the winding end end 3839D are in contact with each other. Figure 1 The negative side of the cover body 30 in the X-axis direction is Figure 8 to Figure 10 On the upper side of the paper, Figure 1 The positive side of the cover body 30 in the X-axis direction is Figure 8 to Figure 10Therefore, Figure 8 to Figure 10 The upper side of the paper is called the negative side of the X-axis direction. Figure 8 to Figure 10 The lower side of the paper in the X direction is called the negative side.

[0171] like Figure 8 As shown, the winding start end 3839C of the plate-shaped member 31A has a plurality of (for example, two) engaging portions 39C01, 39C02. The winding end 3839D has a plurality of (for example, two) engaged portions 39D01, 39D02. In addition, the number of these engaging portions and engaged portions is not limited to two. It can also be three, four, etc.

[0172] The fitting portion 39C01 and the fitted portion 39D01 are shapes that can be fitted with the fitted portion 39D01 from the above-mentioned thickness direction of the plate-shaped member 31A and the above-mentioned approach direction. The fitting portion 39C01 includes a protrusion in a shape that protrudes from the winding start end 3839C to the circumferential direction C. The width of the protrusion in the X-axis direction does not change as it moves away from the winding start end 3839C (that is, remains the same). The fitted portion 39D01 includes a cutout portion in a shape that is cut out at the winding end 3839D. The width of the cutout portion in the X-axis direction does not change as it moves toward the inner side of the plate-shaped member 31A (that is, the circumferential direction C) (that is, remains the same).

[0173] The fitting portion 39C02 and the fitted portion 39D02 have the same structure as the fitting portion 39C01 and the fitted portion 39D01, and therefore the description thereof is omitted.

[0174] As described above, the fitting part is a part that fits into the fitted part, and the fitted part is a part that is fitted through the fitting part. The fitting part fits into the fitted part including not only the case where the boundary between the fitted part and the fitting part coincides, but also the case where there is some play between the boundary between the fitted part and the fitting part (loose fitting).

[0175] like Figure 8 and Fig.11 As shown, the winding start end portion 3839C and the winding end portion 3839D have circumferentially facing surfaces (i.e., end surfaces) that face each other in the circumferential direction C when the plate-like member 31A is wound into a cylindrical shape and serve as a reference for positioning in the circumferential direction C.

[0176] Specifically, if Figure 8 As shown, the winding start end portion 3839C includes circumferentially facing surfaces 38C1 to 38C3 and circumferentially facing surfaces 39C1 and 39C2 serving as a reference for positioning in the circumferential direction C at end surfaces other than the fitting portions 39C01 and 39C02 and at end surfaces in the circumferential direction C of the fitting portions 39C01 and 39C02.

[0177] The winding end portion 3839D includes circumferentially facing surfaces 38D1 to 38D3 and circumferentially facing surfaces 39D1 and 39D2 serving as references for positioning in the circumferential direction C on end surfaces other than the fitted portions 39D01 and 39D02 and on end surfaces in the circumferential direction C of the fitted portions 39D01 and 39D02.

[0178] The plate-like member 31A is wound into a cylindrical shape in such a manner that the winding start end 3839C and the winding end end 3839D are connected, whereby the circumferentially opposed surfaces 38C1 and 38D1 to 38C3 and 38D3, the circumferentially opposed surfaces 39C1 and 39D1, and the circumferentially opposed surfaces 39C2 and 39D2 are respectively connected in an opposed state. In this way, the circumferentially opposed surfaces ((38C1, 38D1) to (38C3, 38D3), (39C1, 39D1) and (39C2, 39D2)) are connected in an opposed state. Fig.11 As shown, the positions of the winding start end 3839C and the winding end 3839D in the circumferential direction C can be determined.

[0179] The winding start end portion 3839C and the winding end portion 3839D include axially facing surfaces (that is, end surfaces) that serve as a reference for axial positioning when the plate-like member 31A is wound into a cylindrical shape.

[0180] Specifically, if Figure 8 As shown, the winding start end portion 3839C has axially facing surfaces 39C11 and 39C12 and axially facing surfaces 39C21 and 39C22 that serve as references for axial positioning on end surfaces other than the end surfaces in the circumferential direction C of the fitting portion 39C01 and the fitting portion 39C02.

[0181] The winding end portion 3839D includes axially facing surfaces 39D11 and 39D12 and axially facing surfaces 39D21 and 39D22 that serve as references for axial positioning on end surfaces other than the end surfaces in the circumferential direction C of the fitted portion 39D01 and the fitted portion 39D02.

[0182] The plate-like member 31A is wound into a cylindrical shape in such a manner that the winding start end 3839C and the winding end end 3839D are connected, whereby the axially facing surfaces 39C11 and the axially facing surfaces 39D11 to the axially facing surfaces 39C22 and the axially facing surfaces 39D22 are connected in an opposed state. In this way, the axially facing surfaces ((39C11, 39D11) to (39C22, 39D22)) are connected in an opposed state, as shown in FIG. Fig.11 As shown, the axial positions of the winding start end 3839C and the winding end end 3839D can be determined.

[0183] Thus, the plate-like member 31A has a mating surface 3839 having circumferentially opposed surfaces ((38C1, 38D1) to (39C2, 39D2)) and axially opposed surfaces ((39C11, 39D11) to (39C22, 39D22)) at the winding start end 3839C and the winding end end 3839D (see Fig.10 and Fig.11 ).

[0184] However, the plate-like member 31A is formed by a plate material not shown in the figure. Fig. 9 As shown, the plate-shaped member 31A, the connecting portions 82 and 84, and the portion 81 other than the frame 80 are punched out and cut out. At the stage of being punched out from the plate material, the plate-shaped member 31A is connected to the frame 80 via the connecting portions 82 and 84.

[0185] The portion of the plate-like component 31A connected by the connecting portions 82 and 84 (i.e., the matching position) is a non-axially restricting portion of the axial end of the plate-like component 31A that is not bent toward the axial side. Specifically, the portion of the plate-like component 31A connected by the connecting portion 82 is the insertion portion 36. The portion of the plate-like component 31A connected by the connecting portion 84 is the insertion portion 37.

[0186] At the stage where the portion 81 is punched out from the plate as described above, the end sides on the positive and negative sides in the X-axis direction are crushed to form the expanded diameter portions 32 and 33. Thereafter, the outer diameter is trimmed.

[0187] Then, if Fig.10 As shown, in a state where the plate-like member 31 is connected to the frame 80 via the connecting portions 82 and 84 , the plate-like member 31 is wound up and corrected so that the winding start end portion 3839C and the winding end end portion 3839D are in contact with each other.

[0188] Then, by cutting off the connecting portions 82 and 84 from the plate-like member 31A, Fig.11 As shown, the cover body 50B is manufactured.

[0189] like Figure 8 and Fig.11As shown, a punch frame cut-off surface 72, 74 is formed at a portion of the plate-like component 31A connected to the connection portions 82, 84. The punch frame cut-off surface 72, 74 is provided at a non-axial restriction portion of the axial end portion of the plate-like component 31A that is not bent toward the axial side. The mating surface 3839 is located at an axial restriction portion of the axial end portion of the plate-like component 31A that is bent toward the axial side. Therefore, the position of the punch frame cut-off surface 72, 74 of the plate-like component 31A where the connection portions 82, 84 are cut off is separated from the mating surface 3839. Therefore, the plate-like component 31A and the connection portions 82, 84 are cut off at a position separated from the position where the winding start end portion 3839C and the winding end end portion 3839D are connected. When the plate-like component 31A and the connection portions 82, 84 are cut off, a force is applied to the cut position (connection position) of the plate-like component 31A and the connection portions 82, 84. However, the cutting position between the plate-shaped member 31A and the connecting parts 82 and 84 is far from the position where the winding start end 3839C and the winding end end 3839D meet. Therefore, the third modification can suppress the positional displacement between the winding start end 3839C and the winding end end 3839D due to the force applied for the above-mentioned cutting. Therefore, the axial and circumferential dimensions of the cover body 50B can be stabilized.

[0190] In the third modified example, the position where the punch frame cuts off the cut surface 72, 74 is the position on the opposite side of the mating surface 3839, that is, the position offset by 180 degrees. In addition, the position where the punch frame cuts off the cut surface 72, 74 is not necessarily the position offset by 180 degrees from the mating surface 3839 as long as it is located in the non-axial restriction portion.

[0191] The point that the positions where the punch frame cut-off cut surface parts 72 and 74 are located in the non-axial restriction part are not limited to the third modification, and the same applies to the first embodiment to the second modification.

[0192] (Other Modifications)

[0193] In each of the examples described above, the solenoid device is described with reference to the illustrated embodiment, but the technology of the present invention is not limited thereto, and each part constituting the solenoid device can be replaced with any structure that can exert the same function. In addition, any structure can be added.

[0194] For example, the recessed portion 131 and the recessed portion 132 of the plunger 103 may not be connected.

[0195] Alternatively, the solenoid device 100 can be used in the following manner: the fluid Q flows in from the large opening on the positive side of the valve mechanism 10 in the X-axis direction, passes through the through holes 200 and 300 , and then flows out to the radially outer side of the valve mechanism 10 through the side holes 3011 and 201 .

[0196] In addition, the disengagement prevention structure 160 can also be composed of a flange portion, which protrudes radially inward in the through hole 200 of the nozzle 20, is located between the large diameter portion 301 of the sliding valve 130 and the plunger 103, and contacts the plunger 103 when the plunger 103 moves axially to one side.

[0197] In addition, the coil spring (urging member) 8 may be fixed to the yoke 5 instead of the plunger 103 .

[0198] In addition, the urging member is not limited to the coil spring, and may be a leaf spring, a torsion spring, or the like.

Claims

1. A solenoid device, characterized in that: A solenoid and a cover covering the solenoid, wherein the solenoid comprises: a bobbin; a coil wound on the bobbin; a plunger disposed on one axial side of a through hole of the bobbin and moved axially by excitation of the coil; and a fixed iron core disposed on the other axial side of the through hole and having an axially extending hole for axially guiding the plunger. The cover body is a plate-shaped member rolled into a cylindrical shape. The plate-like member has circumferentially facing surfaces at the winding start end and the winding end end of the plate-like member, which face each other in the circumferential direction and perform circumferential positioning. The plate-shaped member includes an engaged portion at one of the winding start end and the winding end end. The plate-shaped member includes a fitting portion that fits with the fitted portion at the other of the winding start end portion and the winding end end portion.

2. The solenoid device according to claim 1, characterized in that The engaged portion and the engaging portion include axially opposing surfaces that are axially opposed and axially positioned.

3. The solenoid device according to claim 1, characterized in that The above-mentioned engaged portion and the above-mentioned engaging portion are shaped as follows: the above-mentioned engaging portion can be engaged with the above-mentioned engaged portion from the thickness direction of the above-mentioned plate-shaped component, and the above-mentioned engaging portion cannot be engaged with the above-mentioned engaged portion from a direction perpendicular to the above-mentioned thickness direction and in which the above-mentioned engaged portion and the above-mentioned engaging portion are close to each other.

4. The solenoid device according to claim 3, characterized in that The engaged portion is a notch portion cut out in such a manner that the axial width becomes longer as it moves from one of the winding start end portion and the winding end end portion toward the inner side of the plate-like member. The fitting portion is a protruding portion whose axial width increases as the other of the winding start end portion and the winding end end becomes farther away from the other of the winding start end portion and the winding end end.

5. The solenoid device according to claim 1, characterized in that The cover body has an expanded diameter portion having an expanded inner diameter at one end side in the axial direction.

6. The solenoid device according to claim 5, characterized in that The expanded diameter portion includes a plurality of slit portions whose widths change as the expanded diameter portion advances in the axial direction.

7. The solenoid device according to claim 6, characterized in that The expanded diameter portion includes a bent portion bent toward the axis side between two adjacent slit portions.

8. A solenoid device, characterized in that: A solenoid and a cover covering the solenoid are provided. The solenoid comprises: a bobbin; a coil wound on the bobbin; a plunger arranged on one axial side of a through hole of the bobbin and moved axially by excitation of the coil; and a fixed core arranged on the other axial side of the through hole and having an axially extending hole for axially guiding the plunger. The cover body is a plate-shaped member rolled into a cylindrical shape. The plate-like member has a mating surface at the winding start end and the winding end end of the plate-like member, and the mating surface has a circumferentially opposed surface for circumferential positioning and an axially opposed surface for axial positioning. The plate-like member has an expanded diameter portion with an enlarged inner diameter at an axial end portion. The expanded diameter portion includes a plurality of cutout portions separated in the circumferential direction and having varying widths in the axial direction. The portion of the axial end portion of the plate-like member sandwiched by the cutout portion includes an axial restriction portion bent toward the axial side.

9. The solenoid device according to claim 8, characterized in that The axial end of the plate-like member has a punch frame cutting surface. The punch frame cutting and cutting surface portion is provided at a non-axial restriction portion of an axial end portion of the plate-like member that is not bent toward the axial side.

Images