Mounting structure of the mounting portion and mounting structure of the flange head of the end portion of the hose pipe

Abstract

The present application provides a mounting structure of a mounted portion that suppresses breakage and deformation of the mounted portion, improves durability of the mounted portion, and achieves long service life, and a mounting structure of a flange head of an end portion of a hose pipe. In the mounting structure of the flange head of the end portion of the hose pipe in which the flange head is crimped and mounted to a mounting surface by screwing a bolt that is inserted through a bolt insertion hole and an internal thread of the mounting surface, the axis of the bolt insertion hole and the internal thread is obliquely disposed with respect to the normal line of the mounting surface in such a manner that the bolt that is inserted through the bolt insertion hole and screwed with the internal thread is inclined in a direction in which the upper portion is farther from the flange head than the lower portion. In addition, a seat surface that extends on a plane orthogonal to the axis of the bolt insertion hole and is capable of abutting against the lower surface of the head of the bolt is provided at a portion of the upper surface of the clamping member body around the bolt insertion hole.

Description

Technical Field

[0001] The present invention relates to an installation structure of an installation portion and an installation structure of a flange head at an end of a hose piping. Background Art

[0002] For example, in construction machinery, a control valve connected to a hydraulic pump is provided, and hydraulic pressure is supplied from the control valve to a traveling hydraulic motor, a rotating hydraulic motor, and various working hydraulic actuators via a hose piping (Patent Document 1, Patent Document 2).

[0003] A flange head is provided at an end of the hose piping. The flange head has a first flow path passing therethrough and is joined to an end of the hose. A ring plate portion is provided at a tip of the flange head, and a first opening of the first flow path is located in the ring plate portion.

[0004] In addition, an installation surface for installing an end of the hose piping is provided on the control valve. Second openings of a plurality of second flow paths connected to internal flow paths are located on the installation surface, and internal threads are formed around the second openings.

[0005] Moreover, a clamping device (Japanese: クランプ金具) is used when installing an end of the hose piping on the installation surface.

[0006] The clamping device is composed of a pair of clamping members (Japanese: クランプ) respectively formed with bolt insertion holes. While positioning by abutting the pair of clamping members against both sides of the flange head and arranging them, by screwing a bolt inserted into the bolt insertion hole with the internal thread on the installation surface, the flange head is pressed and installed on the installation surface by the fastening force of the bolt, and the first flow path and the second flow path are made to communicate with each other.

[0007] Prior Art Documents

[0008] Patent Documents

[0009] Patent Document 1: Japanese Patent Application Laid-Open No. 2015-215006

[0010] Patent Document 2: Japanese Patent Application Laid-Open No. 2002-188175 Summary of the Invention

[0011] Problems to be Solved by the Invention

[0012] However, in the above prior art, when installing an end of the hose piping on the installation surface using the clamping device, by installing a bolt inserted into the bolt insertion hole and screwed with the internal thread perpendicularly to the installation surface, the ring plate portion is pressed against the installation surface only in the vertical direction.

[0013] Therefore, the clamping force of conventional clamping devices is weak in the lateral direction along the mounting surface. When the flexible hose installed on the mounting surface is subjected to lateral vibration, it may sometimes break or deform.

[0014] That is, because the annular plate at the end of the flexible conduit is pressed against its end only in the vertical direction by the clamping device, the pressed area is small, the fixation of the flexible conduit is localized, and stress is concentrated. Here, when the flexible conduit moves laterally due to lateral vibration, cracks will occur in the thinner wall area such as the annular plate, resulting in damage and deformation.

[0015] The present invention was made in view of the above circumstances, and its object is to provide an installation structure for the mounted part in which the bolt is installed at an angle that is more away from the mounted part than the lower part of the bolt, thereby dispersing the stress generated in the mounting member, suppressing the damage and deformation of the mounted part, improving the durability of the mounted part, and achieving a long service life.

[0016] In addition, the present invention aims to provide an installation structure for the flange head at the end of a flexible conduit, wherein by installing the bolt in an inclined manner in a direction that is further away from the mounting part than the lower part of the bolt, the stress generated by a pair of clamping members is dispersed, thereby suppressing the breakage and deformation of the annular plate portion of the flange head, improving the durability of the flange head and achieving a long service life.

[0017] Methods for solving problems

[0018] To achieve the above objectives, one embodiment of the present invention provides an installation structure comprising an installation member having a main body portion through which a bolt insertion hole is formed, a first abutment surface disposed on the main body portion and capable of abutting against the outer peripheral surface of a mounted portion, and a second abutment surface disposed on the main body portion and capable of abutting against the upper surface of the mounted portion. The installation structure presses and mounts the mounted portion onto the mounting surface by engaging a bolt inserted into the bolt insertion hole with the internal thread of the mounting surface while the first abutment surface abuts against the outer peripheral surface of the mounted portion and the second abutment surface abuts against the upper surface of the mounted portion. The installation structure is characterized in that the axis of the bolt insertion hole and the internal thread is inclined relative to the normal of the mounting surface in a direction in which the bolt inserted into the bolt insertion hole and engaged with the internal thread is inclined at its upper part further away from the mounted portion than at its lower part.

[0019] Furthermore, one embodiment of the present invention is characterized in that a first friction portion is provided on the first abutting surface, wherein the coefficient of friction relative to the outer peripheral surface of the mounted portion is greater than the coefficient of friction of the first abutting surface.

[0020] In addition, one embodiment of the present invention is characterized in that a seat surface is provided on the upper surface of the main body at the location surrounding the bolt insertion hole, the seat surface extending on a plane orthogonal to the axis of the bolt insertion hole and capable of abutting against the lower surface of the bolt head.

[0021] In another embodiment of the present invention, there is a mounting structure for a flange head at the end of a flexible conduit. The mounting structure includes a pair of clamping members disposed on both sides of an annular plate portion constituting the end of the flexible conduit and each having a through-hole for bolt insertion. Each clamping member includes a clamping member body extending along the outer circumferential surface of the annular plate portion and having the bolt insertion holes at both ends in its extending direction; a first abutting surface disposed on the clamping member body and capable of abutting against the outer circumferential surface of the annular plate portion; and an upper abutting surface disposed on the clamping member body and capable of abutting against the upper surface of the annular plate portion. The mounting structure comprises a second abutting surface, wherein the first abutting surface abuts against the outer peripheral surface of the ring plate portion and the second abutting surface abuts against the upper surface of the ring plate portion, and the bolt inserted into the bolt insertion hole is screwed into the internal thread of the mounting surface, thereby pressing and mounting the ring plate portion onto the mounting surface. The mounting structure is characterized in that the axis of the bolt insertion hole and the internal thread is inclined relative to the normal of the mounting surface in such a way that the bolt inserted into the bolt insertion hole and screwed into the internal thread is inclined at its upper part in a direction further away from the flange head than at its lower part.

[0022] Furthermore, one embodiment of the present invention is characterized in that a first friction portion is provided on the first abutting surface, wherein the coefficient of friction relative to the outer peripheral surface of the ring plate portion is greater than the coefficient of friction of the first abutting surface.

[0023] In another embodiment of the present invention, there is a mounting structure for a flange head at the end of a flexible conduit. The mounting structure includes a pair of clamping members disposed on both sides of an annular plate portion constituting the end of the flexible conduit and each having a through-hole for bolt insertion. The flange head has a first minor diameter portion protruding from the annular plate portion and having a diameter smaller than that of the annular plate portion. Each clamping member includes a clamping member body extending along the outer circumferential surface of the annular plate portion and having bolt insertion holes at both ends in its extending direction; a second abutting surface disposed on the clamping member body and capable of abutting against the upper surface of the annular plate portion; and a clamping surface disposed on the clamping member body. The mounting structure includes a third abutment surface that abuts the main body of the fastening component and is capable of abutting against the outer peripheral surface of the first minor diameter portion. The mounting structure presses and mounts the ring plate portion onto the mounting surface by engaging the bolt inserted into the bolt insertion hole with the internal thread of the mounting surface while the second abutment surface abuts against the upper surface of the ring plate portion and the third abutment surface abuts against the outer peripheral surface of the first minor diameter portion. The mounting structure is characterized in that the axis of the bolt insertion hole and the internal thread is inclined relative to the normal of the mounting surface in a manner such that the bolt inserted into the bolt insertion hole and engaged with the internal thread is inclined at its upper part in a direction farther from the flange head than at its lower part.

[0024] Furthermore, one embodiment of the present invention is characterized in that a third friction portion is provided on the third abutting surface, wherein the coefficient of friction relative to the outer peripheral surface of the first small diameter portion is greater than the coefficient of friction of the third abutting surface.

[0025] In addition, one embodiment of the present invention is characterized in that each clamping member further comprises a first abutting surface disposed on the clamping member body and capable of abutting against the outer peripheral surface of the ring plate portion, wherein a first friction portion is provided on the first abutting surface, the friction coefficient of which is greater than that of the outer peripheral surface of the ring plate portion than that of the first abutting surface.

[0026] Furthermore, one embodiment of the present invention is characterized in that the flange head further includes a second minor diameter portion protruding from the first minor diameter portion and having a diameter smaller than that of the first minor diameter portion, and each clamping member further includes a fourth abutting surface disposed on the clamping member body and capable of abutting against the outer peripheral surface of the second minor diameter portion, wherein a fourth friction portion is provided on the fourth abutting surface, the friction coefficient of which relative to the outer peripheral surface of the second minor diameter portion is greater than that of the fourth abutting surface.

[0027] In addition, one embodiment of the present invention is characterized in that a seat surface is provided on the upper surface of the clamping member body at the location around the bolt insertion hole, the seat surface extending on a plane orthogonal to the axis of the bolt insertion hole and capable of abutting against the lower surface of the bolt head.

[0028] Invention Effects

[0029] According to one embodiment of the present invention, in a mounting structure in which the part to be mounted is pressed and mounted on the mounting surface by engaging the bolt inserted into the bolt through hole with the internal thread of the mounting surface, since the axis of the bolt through hole and the internal thread is inclined relative to the normal of the mounting surface in such a way that the upper part of the bolt inserted into the bolt through hole and engaged with the internal thread is further away from the part to be mounted than the lower part, it is advantageous to disperse the stress generated in the mounting member by the tightening of the bolt in the vertical and horizontal directions, and fix it by the fixing force in the vertical and horizontal directions, thereby suppressing the damage and deformation of the part to be mounted, improving the durability of the part to be mounted and achieving a long service life.

[0030] Furthermore, when a structure is adopted in which a first friction part is provided on the first abutting surface and the friction coefficient of the first abutting surface is greater than that of the outer peripheral surface of the mounted part, it is beneficial to suppress the sliding between the first abutting surface and the outer peripheral surface of the mounted part and improve the fixing force of the mounting member on the mounted part.

[0031] Furthermore, when a structure is adopted in which a seat surface is provided on the upper surface of the main body around the bolt insertion hole, extending on a plane orthogonal to the axis of the bolt insertion hole and capable of abutting against the lower surface of the bolt head, it is advantageous to reliably install the bolt in the direction where the bolt insertion hole and internal thread are provided.

[0032] Furthermore, according to one embodiment of the present invention, in the mounting structure of the flange head of the end of a flexible conduit that is press-fitted to the mounting surface by screwing a bolt through the bolt insertion hole into the internal thread of the mounting surface, the axis of the bolt insertion hole and the internal thread is inclined relative to the normal of the mounting surface in such a way that the upper part of the bolt through the bolt insertion hole and the bolt into the internal thread is inclined further away from the flange head than the lower part. Therefore, it is advantageous to disperse the stress generated by the bolt tightening in a pair of clamping members in the vertical and horizontal directions, and fix it by fixing force in the vertical and horizontal directions, thereby suppressing the breakage and deformation of the ring plate portion of the flange head, improving the durability of the flange head and achieving a long service life.

[0033] Furthermore, when a structure is adopted in which a first friction part is provided on the first abutting surface and the friction coefficient of the outer peripheral surface of the ring plate portion is greater than that of the first abutting surface, it is beneficial to suppress the sliding between the first abutting surface and the outer peripheral surface of the ring plate portion and improve the fixing force of the pair of clamping members on the flange head.

[0034] Furthermore, when a structure is adopted in which a third friction part is provided on the third abutment surface with a friction coefficient that is greater than that of the outer peripheral surface of the first minor diameter portion than that of the third abutment surface, it is beneficial to suppress the sliding between the third abutment surface and the outer peripheral surface of the first minor diameter portion and to improve the fixing force of a pair of clamping members on the flange head.

[0035] Furthermore, when a structure is adopted in which a fourth friction part is provided on the fourth abutment surface with a friction coefficient that is greater than that of the outer peripheral surface of the second minor diameter portion than that of the fourth abutment surface, it is beneficial to suppress the sliding between the fourth abutment surface and the outer peripheral surface of the second minor diameter portion and improve the fixing force of a pair of clamping members on the flange head.

[0036] Furthermore, when a structure is adopted in which a seat surface is provided on the upper surface of the clamping member body around the bolt insertion hole, extending on a plane orthogonal to the axis of the bolt insertion hole and capable of abutting against the lower surface of the bolt head, it is advantageous to reliably install the bolt in the direction provided with the bolt insertion hole and internal thread. Attached Figure Description

[0037] Figure 1 It is a three-dimensional view of the end of the flexible conduit being installed on the mounting surface of the control valve using a clamping device.

[0038] Figure 2 It connects the axis of the flange head to the axis of the two bolts. Figure 1 A sectional view along line AA.

[0039] Figure 3 It is a perspective view illustrating the state of the flange head being installed on the mounting surface of the control valve via bolts, clamping devices, and O-rings.

[0040] Figure 4 This is a side view illustrating the state in which the flange head is installed on the mounting surface of the control valve via bolts, clamping devices, and O-rings.

[0041] Figure 5 The diagrams are for the clamping components. (A) is a perspective view, (B) is a top view, (C) is a rear view, (D) is a side view, (E) is a bottom view, and (F) is a sectional view along line FF of (B).

[0042] Figure 6 It is a diagram illustrating the state in which the stress F generated by the tightening of the bolts in the clamping device is dispersed into stress Fx and stress Fy.

[0043] Figure 7 It connects the axis of the flange head to the axis of the two bolts. Figure 1 A sectional view along line AA.

[0044] Figure 8 This is a sectional view of the clamping component.

[0045] Figure 9 It connects the axis of the flange head to the axis of the two bolts. Figure 1 A sectional view along line AA.

[0046] Figure 10 This is a sectional view of the clamping component.

[0047] Explanation of reference numerals in the attached figures

[0048] 10 Control valve

[0049] 12 mounting brackets

[0050] 1202 Mounting Surface

[0051] 1204 internal thread

[0052] 16 Flange Head

[0053] 24. Ring plate section

[0054] 2402 Lower surface

[0055] 2404 upper surface

[0056] 2406 outer perimeter

[0057] 26. First minor diameter section

[0058] 2602 outer perimeter

[0059] 2604 upper surface

[0060] 28 Second minor diameter section

[0061] 2802 outer perimeter

[0062] 32 Clamping device

[0063] 34 A pair of clamping components

[0064] Clamping components 34A, 34C, and 34D

[0065] 3402 Clamping Component Main Body

[0066] 3404 First contact surface

[0067] 3406 Second contact surface

[0068] 3408 Third contact surface

[0069] 3410 Lower surface

[0070] 3412 Upper surface

[0071] 3414 seats

[0072] 3416 Fourth contact surface

[0073] 3418 Fifth contact surface

[0074] 36 Bolt through holes

[0075] 44 bolts

[0076] 44A Upper

[0077] 44B lower part Detailed Implementation

[0078] (First Embodiment)

[0079] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0080] In this application, the term "installed part" specifically refers, for example, to a connection portion used for installing hydraulic piping onto hydraulic equipment or hydraulic control equipment. However, in this invention, "installed part" is not limited to the components of the embodiments described below, nor is it limited to hydraulic piping; it is also intended to include connection portions or joints for installing hoses, pipes, etc., for other fluids onto the desired device.

[0081] exist Figure 1 , Figure 2 In the figure, reference numeral 10 indicates a control valve mounted on construction machinery and connected to a hydraulic pump, and reference numeral 12 indicates one of the multiple mounting seats provided on the control valve 10.

[0082] Additionally, reference numeral 16 indicates a flange head that engages with the end of the hose 14, and the flange head 16 constitutes the end of the hose piping.

[0083] The flange head 16 is mounted on the mounting surface 1202 of the mounting base 12 using the clamping device 32 of this embodiment.

[0084] First, the flange head 16, which is the part to be installed, will be explained.

[0085] like Figure 2 As shown, a first flow path 18 is formed through the flange head 16 and communicates with the interior of the hose 14.

[0086] like Figure 4 As shown, a portion of the outer periphery of the flange head 16 in the longitudinal direction is formed as a hose coupling 22, which has a threaded connector (not shown) portion covering the end of the hose 14, and a socket 20 provided on the radially outer side of the threaded connector portion and fixed to the end of the hose 14 by being hewn in the radially inner side. An annular plate portion 24 is formed at the top of the remaining portion in the longitudinal direction of the flange head 16.

[0087] In addition, the flange head 16 has a first minor diameter portion 26 that protrudes from the annular plate portion 24 and has a diameter smaller than that of the annular plate portion 24, and also has a second minor diameter portion 28 that protrudes from the first minor diameter portion 26 and has a diameter smaller than that of the first minor diameter portion 26.

[0088] The hose joint 22 and the ring plate 24 are connected via the first minor diameter portion 26 and the second minor diameter portion 28.

[0089] Both the ring plate portion 24 and the first minor diameter portion 26 have a circular outline on their outer periphery, but the outlines of the outer periphery of the ring plate portion 24 and the first minor diameter portion 26 can also be formed by polygonal or other outlines and are not limited to circular outlines.

[0090] The annular plate portion 24 forms the flange head 16 at the end of the hose 14, is placed on the mounting surface 1202, and has a lower surface 2402, an upper surface 2404, and an outer peripheral surface 2406.

[0091] The lower surface 2402 is formed as one side of the thickness direction of the annular plate portion 24, and is formed by a flat surface. The first opening 18A of the first flow path 18 (refer to...) Figure 2 It is located at the center of the lower surface 2402.

[0092] like Figure 2 As shown, a groove 2408 extending in a ring shape around the first opening 18A is provided on the lower surface 2402, and an O-ring 2410 is installed in the groove 2408.

[0093] The upper surface 2404 is formed as the other side of the thickness direction of the annular plate portion 24, and is formed by an annular flat surface. A first small diameter portion 26 is provided protruding from the inner periphery of the upper surface 2404.

[0094] The outer peripheral surface 2406 is formed by a cylindrical surface that connects the outer periphery of the lower surface 2402 and the outer periphery of the upper surface 2404.

[0095] like Figure 3 As shown, the control valve 10 is provided with a plurality of second flow paths 30, the mounting surface 1202 of the mounting base 12 is formed by a flat surface, and the second opening 30A of the second flow path 30 is located on the mounting surface 1202.

[0096] Four internal threads 1204 are provided on the mounting surface 1202 around the second opening 30A, such as... Figure 2 As shown, the four internal threads 1204 are inclined in a predetermined direction.

[0097] like Figure 1 , Figure 3As shown, the clamping device 32, which serves as an installation component, consists of a pair of clamping members 34A. The pair of clamping members 34A are disposed on both sides of the annular plate portion 24 constituting the flange head 16 and each has a through bolt insertion hole 36 formed therethrough. The pair of clamping members 34A are configured with clamping members 34A of the same shape.

[0098] like Figure 3 , Figure 5 As shown, a pair of clamping members 34A are respectively configured to include: a clamping member body 3402 (main body portion), which extends along the outer peripheral surface 2406 of the ring plate portion 24 and has bolt insertion holes 36 at both ends in the extending direction; a first abutting surface 3404, which is disposed on the clamping member body 3402 and can abut against the outer peripheral surface 2406 of the ring plate portion 24; a second abutting surface 3406, which is disposed on the clamping member body 3402 and can abut against the upper surface 2404 of the ring plate portion 24; and a third abutting surface 3408, which is disposed on the clamping member body 3402 and can abut against the outer peripheral surface 2602 of the first small diameter portion 26.

[0099] In addition, such as Figure 5 As shown, the clamping member body 3402 has a thickness in a direction orthogonal to its extension direction, and the lower surface 3410 of the face that is one of the thickness directions is formed by a single flat surface.

[0100] That is, such as Figure 5 As shown, the clamping member body 3402 extends in a semi-circular arc along the extension direction, with the first abutment surface 3404 extending from the inner end of the lower surface 3410 toward the vertical direction, the second abutment surface 3406 extending from the upper end of the first abutment surface 3404 toward the inner side in the horizontal direction, and the third abutment surface 3408 extending from the end of the second abutment surface 3406 toward the vertical direction.

[0101] In addition, the central part of the upper surface 3412, which is the other side of the thickness direction of the clamping member body 3402, is formed by a single flat surface in the extension direction, and the upper surface 3412 is provided with seat surfaces 3414 at both ends in the extension direction.

[0102] The seat surface 3414 is located on the upper surface of the clamping member body 3402 around the bolt insertion hole 36, extends on a plane orthogonal to the axis of the bolt insertion hole 36, and can abut against the lower surface of the head of the bolt 44.

[0103] like Figure 2 , Figure 4As shown, the bolt insertion hole 36 provided in the clamping member body 3402 and the axis T of the internal thread 1204 provided in the mounting surface 1202 are inclined relative to the normal L of the mounting surface 1202 in such a way that the bolt 44, which is inserted into the bolt insertion hole 36 and screwed into the internal thread 1204, is inclined at its upper part 44A in a direction further away from the flange head 16 than at its lower part 44B.

[0104] In this embodiment, the axis T of the bolt insertion hole 36 and the internal thread 1204 is formed at an angle that approaches the flange head 16 as it faces downward. The extension line of the axis T of the bolt insertion hole 36 and the internal thread 1204 intersects the axis of the flange head 16. Therefore, the bolt 44 is arranged at an angle θ relative to the normal L by being installed so that the lower part 44B approaches the axis of the flange head 16.

[0105] In detail, when viewed from a direction orthogonal to an imaginary plane orthogonal to the mounting surface 1202 and passing through the bolt insertion hole 36 and the internal thread 1204, the axis T of the bolt insertion hole 36 and the internal thread 1204 is tilted at an angle θ relative to the normal L at any point on the mounting surface 1202.

[0106] like Figure 2 , Figure 4 As shown, the angle θ of the axis T of the bolt insertion hole 36 and the internal thread 1204 relative to the normal L of the mounting surface 1202 passing through the center of the opening of the internal thread 1204 is set to be greater than 0 degrees and less than 8.4 degrees (0 < θ ≤ 8.4°). Here, the clamping member 34A is sized according to the SAE standard. When the angle θ of the axis T of the bolt insertion hole 36 and the internal thread 1204 relative to the normal L of the mounting surface 1202 is greater than 8.4 degrees, the bolt 44 will hit the flange head 16. Therefore, in this embodiment, it is set to less than 8.4 degrees.

[0107] Since the seat surface 3414 extends on a plane orthogonal to the axis of the bolt insertion hole 36, it is inclined at an angle θ relative to the lower surface 3410 and the upper surface 3412 of the clamping member 34A.

[0108] like Figure 2 , Figure 3 , Figure 4 As shown, when the flange head 16 is installed on the control valve 10, the lower surface 2402 of the annular plate portion 24 of the flange head 16 is aligned with the mounting surface 1202 of the mounting base 12 in such a way that the first opening 18A of the first flow path 18 is opposite to the second opening 30A of the second flow path 30, and a pair of clamping members 34A are arranged along the annular plate portion 24.

[0109] And, as Figure 2As shown, with the first abutting surface 3404 of the clamping member body 3402 abutting against the outer peripheral surface 2406 of the ring plate portion 24, the second abutting surface 3406 of the clamping member body 3402 abutting against the upper surface 2404 of the ring plate portion 24, and the third abutting surface 3408 of the clamping member body 3402 abutting against the outer peripheral surface 2602 of the first small diameter portion 26, the bolt 44 inserted into the bolt insertion hole 36 is screwed into the internal thread 1204 of the mounting surface 1202 via the washer 42 and fastened to the bolt insertion hole 36 of the clamping member body 3402, thereby pressing and mounting the ring plate portion 24 of the flange head 16 onto the mounting surface 1202.

[0110] At this time, as described above, in this embodiment, since the axis T of the bolt insertion hole 36 and the internal thread 1204 is inclined relative to the normal L of the mounting surface 1202, therefore, as Figure 6 As shown, the inclined stress F generated in the clamping member body 3402 by tightening the bolt 44 can be dispersed (decomposed) into a horizontal stress Fx and a vertical stress Fy. Therefore, by tightening the bolt 44, the stress Fy and stress Fx act on a pair of clamping members 34A, causing the pair of clamping members 34A to move slightly at an incline, thereby eliminating the gap with the flange head 16 and fixing the flange head 16.

[0111] That is, utilizing the stress Fy dispersed from the stress F generated by the tightening of bolt 44, such as Figure 2 As shown, the second abutment surface 3406 of the clamping member body 3402 is pressed against the upper surface 2404 of the ring plate portion 24, thereby pressing the lower surface 2402 of the ring plate portion 24 against the mounting surface 1202 of the mounting base 12. The lower surface 2402 of the ring plate portion 24 and the mounting surface 1202 are liquid-tightly connected via the O-ring 2410.

[0112] Furthermore, when the second abutment surface 3406 is in contact with the upper surface 2404 of the ring plate portion 24 in such a way that the second abutment surface 3406 can reliably press against the upper surface 2404 of the ring plate portion 24, a gap S is ensured between the lower surface 3410 of the clamping member body 3402 and the mounting surface 1202.

[0113] Furthermore, by utilizing the stress Fx dispersed from the stress F generated by the tightening of the bolts 44, the first abutment surface 3404 of the clamping member body 3402 presses against the outer peripheral surface 2406 of the ring plate portion 24, and the third abutment surface 3408 presses against the outer peripheral surface 2602 of the first small diameter portion 26. Thus, the clamping member body 3402 presses the flange head 16 toward the axis of the flange head 16. Four bolts 44 are provided along the outer periphery of the flange head 16; therefore, the clamping member body 3402 clamps the flange head 16, thereby suppressing horizontal movement of the flange head 16 and fixing it in place.

[0114] Thus, according to this embodiment, in the mounting structure of the flange head 16 being crimped and mounted to the end of the hose fitting on the mounting surface 1202 by screwing the bolt 44 inserted into the bolt insertion hole 36 into the internal thread 1204 of the mounting surface 1202, the axis T of the bolt insertion hole 36 and the internal thread 1204 is inclined relative to the normal L of the mounting surface 1202 in such a way that the upper part of the bolt 44 inserted into the bolt insertion hole 36 and screwed into the internal thread 1204 is inclined in a direction further away from the flange head 16 than the lower part. Therefore, it is advantageous to disperse the stress F generated by the tightening of the bolt 44 into a vertical stress Fy and a horizontal stress Fx, and fix it by the fixing force in the vertical and horizontal directions, thereby suppressing the breakage and deformation of the ring plate portion 24 of the flange head 16 and improving the durability of the flange head 16.

[0115] As described above, the angle θ of the axis T of the bolt insertion hole 36 and the internal thread 1204 relative to the normal L of the mounting surface 1202 is set to be greater than 0 degrees and less than 8.4 degrees. However, if the angle θ is increased within this range, the stress Fx in the horizontal direction dispersed from the stress F generated in the clamping member 34A will be greater, and the force by which the clamping member body 3402 presses the flange head 16 toward the axis of the flange head 16 will be greater. Therefore, the force that inhibits the horizontal movement of the flange head 16 can be increased, which is more conducive to inhibiting the breakage and deformation of the ring plate portion 24 and improving the durability of the flange head 16.

[0116] In addition, on the upper surface of the clamping member body 3402, around the bolt insertion hole 36, there is a seat surface 3414 that extends on a plane orthogonal to the axis of the bolt insertion hole 36 and can abut against the lower surface of the head of the bolt 44, thereby facilitating the reliable installation of the bolt 44 in the direction of the bolt insertion hole 36 and the internal thread 1204.

[0117] (Second Implementation)

[0118] Next, the second embodiment will be described.

[0119] Furthermore, in the following description of the embodiments, the same reference numerals are used for the same parts and components as in the first embodiment, and their descriptions are omitted or simplified, with emphasis placed on the differences.

[0120] In the second embodiment, the axis T of the bolt insertion hole 36 and the internal thread 1204 is inclined at an angle θ relative to the normal L of the mounting surface 1202, which is the same as in the first embodiment. In the first embodiment, the first abutting surface 3404 and the third abutting surface 3408 provided on the clamping member 34A are formed by flat surfaces. In contrast, the first abutting surface 3404 and the third abutting surface 3408 of the second embodiment are surfaces that increase frictional resistance by providing friction parts.

[0121] like Figure 7 , Figure 8 As shown, in this embodiment, a first friction part 4602 is provided on the first contact surface 3404, and the friction coefficient relative to the outer peripheral surface 2406 of the ring plate portion 24 is greater than that of the first contact surface 3404. A third friction part 4604 is provided on the third contact surface 3408, and the friction coefficient relative to the outer peripheral surface 2602 of the first small diameter portion 26 is greater than that of the third contact surface 3408.

[0122] In this embodiment, a serrated edge with a sharp tip is provided on the first contact surface 3404 as a first friction part 4602, and the coefficient of friction relative to the outer peripheral surface 2406 of the ring plate part 24 is greater than the coefficient of friction of the first contact surface 3404.

[0123] In addition, a serrated edge with a sharp tip is also provided on the third contact surface 3408 as a third friction part 4604, and the coefficient of friction relative to the outer peripheral surface 2602 of the first small diameter part 26 is greater than the coefficient of friction of the third contact surface 3408.

[0124] Thus, when serrated edges are provided on the first abutting surface 3404 and the third abutting surface 3408, the stress Fx dispersed from the stress F generated by the tightening of the bolt 44 is used to press the first abutting surface 3404 of the clamping member body 3402 against the outer peripheral surface 2406 of the ring plate portion 24, and the third abutting surface 3408 against the outer peripheral surface 2602 of the first small diameter portion 26. When the flange head 16 is fixed, the first friction portion 4602 and the third friction portion 4604 abut against each other, thereby increasing the fixing force.

[0125] Furthermore, in this embodiment, a serrated edge serving as a friction part is provided on the first contact surface 3404 and the third contact surface 3408. However, as long as the coefficient of friction is greater than the coefficient of friction of each surface, various conventionally known structures such as fine concave-convex structures and multiple protrusions can be applied to increase the coefficient of friction.

[0126] In this embodiment, serrated friction portions are provided on both the first abutment surface 3404 and the third abutment surface 3408, but the structure can also be provided on either surface. Even if friction portions are provided on either surface, the fixing force of the fixing flange head 16 can be improved.

[0127] Thus, according to this embodiment, in addition to the effects of the first embodiment, it is also beneficial to suppress the sliding between the first abutment surface 3404, where the first friction part 4602 is provided, and the outer peripheral surface 2406 of the ring plate part 24, and to suppress the sliding between the third abutment surface 3408, where the third friction part 4604 is provided, and the outer peripheral surface 2602 of the first small diameter part 26, thereby improving the fixing force of the pair of clamping members 34C on the flange head 16.

[0128] (Third Implementation)

[0129] In the third embodiment, the inclination angle θ between the axis T of the bolt insertion hole 36 and the internal thread 1204 and the normal L of the mounting surface 1202 is the same as in the first embodiment. In the second embodiment, friction portions are provided on the first abutting surface 3404 and the third abutting surface 3408. In contrast, the third embodiment has a fourth abutting surface 3416 that can increase the thickness of the clamping member body 3402 and abut against the outer peripheral surface 2802 of the second small diameter portion 28, and friction portions are provided on the first abutting surface 3404, the third abutting surface 3408, and the fourth abutting surface 3416.

[0130] like Figure 9 , Figure 10 As shown, the pair of clamping members 34D in this embodiment are configured such that the thickness in the height direction perpendicular to the mounting surface 1202 is greater than that of the pair of clamping members 34D in the first embodiment, and has a fourth abutting surface 3416 that can abut against the outer peripheral surface 2802 of the second small diameter portion 28 provided on the clamping member body 3402.

[0131] In addition, the pair of clamping members 34D have a fifth abutment surface 3418 provided on the clamping member body 3402 and capable of abutting against the upper surface 2604 of the first small diameter portion 26.

[0132] That is, such as Figure 10 As shown, the clamping component body 3402 extends in a semi-circular arc shape along the extension direction (refer to...). Figure 5The first abutment surface 3404 extends vertically upward from the inner end of the lower surface 3410, the second abutment surface 3406 extends horizontally inward from the upper end of the first abutment surface 3404, the third abutment surface 3408 extends vertically upward from the end of the second abutment surface 3406, the fifth abutment surface 3418 extends horizontally inward from the upper end of the third abutment surface 3408, and the fourth abutment surface 3416 extends vertically upward from the end of the fifth abutment surface 3418.

[0133] Furthermore, a fourth friction portion 4606 is provided on the fourth abutment surface 3416, and the coefficient of friction relative to the outer peripheral surface 2802 of the second small diameter portion 28 is greater than the coefficient of friction of the fourth abutment surface 3416.

[0134] In this embodiment, similar to the second embodiment, the first contact surface 3404 and the third contact surface 3408 are respectively provided with sharp-tipped serrated blades as the first friction part 4602 and the third friction part 4604.

[0135] Furthermore, in this embodiment, a serrated edge with a sharp tip is also provided on the fourth contact surface 3416 as the third friction part 4606, and the coefficient of friction relative to the outer peripheral surface 2802 of the second small diameter part 28 is greater than the coefficient of friction of the fourth contact surface 3416.

[0136] Thus, when serrated edges are provided on the first abutting surface 3404, the third abutting surface 3408, and the fourth abutting surface 3416, the stress Fx dispersed from the stress F generated by the tightening of the bolt 44 is used to press the first abutting surface 3404 of the clamping member body 3402 against the outer peripheral surface 2406 of the ring plate portion 24, the third abutting surface 3408 against the outer peripheral surface 2602 of the first small diameter portion 26, and the fourth abutting surface 3416 against the outer peripheral surface 2802 of the second small diameter portion 28. When fixing the flange head 16, the first friction portion 4602, the third friction portion 4604, and the fourth friction portion 4606 abut against each other, thereby further increasing the fixing force.

[0137] Furthermore, in this embodiment, a serrated edge is provided on the fourth contact surface 3416 as a friction part. However, similar to the second embodiment, as long as the coefficient of friction is made larger than the coefficient of friction of the fourth contact surface 3416, various conventionally known structures such as fine concave-convex structures and multiple protrusions can be applied to increase the coefficient of friction.

[0138] In addition, in this embodiment, serrated blades are provided on all the surfaces, including the first abutting surface 3404, the third abutting surface 3408, and the fourth abutting surface 3416. However, it is also possible to provide serrated blades only on the first abutting surface 3404 and the fourth abutting surface 3416, or only on the third abutting surface 3408 and the fourth abutting surface 3416, or only on the fourth abutting surface 3416.

[0139] Thus, according to this embodiment, in addition to the effects of the first embodiment, it is also beneficial to suppress the sliding between the first abutment surface 3404, where the first friction part 4602 is provided, and the outer peripheral surface 2406 of the ring plate portion 24; to suppress the sliding between the third abutment surface 3408, where the third friction part 4604 is provided, and the outer peripheral surface 2602 of the first small diameter portion 26; and to suppress the sliding between the fourth abutment surface 3416, where the fourth friction part 4606 is provided, and the outer peripheral surface 2802 of the second small diameter portion 28, thereby further improving the fixing force of the pair of clamping members 34D on the flange head 16.

[0140] Furthermore, horizontal positioning and fixing are achieved by the first abutment surface 3404 provided with the first friction part 4602, the third abutment surface 3408 provided with the third friction part 4604, and the fourth abutment surface 3416 provided with the fourth friction part 4606. Therefore, horizontal positioning and fixing can also be achieved by using at least one of these first abutment surfaces 3404, third abutment surfaces 3408, and fourth abutment surfaces 3416. However, when all three abutment surfaces 3404, third abutment surfaces 3408, and fourth abutment surfaces 3416 are used as in this embodiment, it is beneficial to further improve the fixing force of the flange head 16.

[0141] Furthermore, in the above embodiment, the case in which the annular plate portion 24 of the flange head 16 provided at the end of the hose fitting, which is the mounting part, is mounted on the mounting surface 1202 of the control valve 10 has been described. However, the feature of the present invention is that the bolt is inclined relative to the normal of the mounting surface. The present invention is not limited to the mounting structure at the end of the hose fitting. The application of the present invention is arbitrary. The present invention can be applied to various mounting structures of conventionally known parts.

[0142] That is, the present invention can be applied to an installation structure in which the mounting part is mounted on the mounting surface using mounting components.

[0143] For example, the mounting component is configured to have: a main body having a through bolt insertion hole, a first abutting surface disposed on the main body and capable of abutting the outer peripheral surface of the mounted part, and a second abutting surface disposed on the main body and capable of abutting the upper surface of the mounted part.

[0144] Furthermore, by engaging the bolt inserted into the bolt insertion hole with the internal thread of the mounting surface while the first abutting surface is abutting against the outer peripheral surface of the mounted part and the second abutting surface is abutting against the upper surface of the mounted part, the mounted part is pressed and mounted on the mounting surface.

[0145] At this time, since the axis of the bolt insertion hole and the internal thread is inclined relative to the normal of the mounting surface, the bolt inserted into the bolt insertion hole and engaged with the internal thread is inclined in a direction that is farther away from the mounted part than the lower part. Therefore, the stress generated by the bolt tightening on the mounting component is dispersed in the vertical and horizontal directions. The fixing force in the vertical and horizontal directions is used to fix it, thereby suppressing the damage and deformation of the mounted part, improving the durability of the mounted part and achieving a long service life.

[0146] In this case, as in the second embodiment, a first friction part with a friction coefficient greater than that of the outer peripheral surface of the mounted part relative to the first abutting surface may be provided on the first abutting surface.

[0147] Alternatively, as in the first embodiment, a seat surface can be provided on the upper surface of the main body around the bolt insertion hole, such that the seat surface extends on a plane orthogonal to the axis of the bolt insertion hole and can abut against the lower surface of the bolt head.

Claims

1. A mounting structure for a mounted part, the mounting structure comprising a mounting member having a through bolt insertion hole, a first abutment surface disposed on the main body and capable of abutting against the outer peripheral surface of the mounted part, and a second abutment surface disposed on the main body and capable of abutting against the upper surface of the mounted part, wherein the mounting structure presses and mounts the mounted part onto the mounting surface by engaging a bolt inserted into the bolt insertion hole with the internal thread of the mounting surface while the first abutment surface abuts against the outer peripheral surface of the mounted part and the second abutment surface abuts against the upper surface of the mounted part. The installation structure is characterized in that... The axis of the bolt insertion hole and the internal thread is inclined relative to the normal of the mounting surface in such a way that the bolt, which is inserted into the bolt insertion hole and screwed into the internal thread, is inclined at its upper part further away from the mounted part than at its lower part. On the first abutting surface, a first friction part is provided, which has a friction coefficient relative to the outer peripheral surface of the mounted part that is greater than the friction coefficient of the first abutting surface.

2. The mounting structure of the mounted part according to claim 1, characterized in that, A seat surface is provided on the upper surface of the main body around the bolt insertion hole, the seat surface extending on a plane orthogonal to the axis of the bolt insertion hole and capable of abutting against the lower surface of the bolt head.

3. A mounting structure for a flange head at the end of a flexible conduit, the mounting structure comprising a pair of clamping members disposed on both sides of an annular plate portion constituting the flange head at the end of the flexible conduit and respectively having bolt insertion holes formed therethrough. Each of the pair of clamping members includes a clamping member body extending along the outer peripheral surface of the ring plate portion and having bolt insertion holes at both ends in its extending direction, a first abutting surface disposed on the clamping member body and capable of abutting against the outer peripheral surface of the ring plate portion, and a second abutting surface disposed on the clamping member body and capable of abutting against the upper surface of the ring plate portion. The mounting structure involves pressing and mounting the ring plate onto the mounting surface by engaging the bolt inserted into the bolt insertion hole with the internal thread of the mounting surface while the first abutting surface is abutting against the outer peripheral surface of the ring plate and the second abutting surface is abutting against the upper surface of the ring plate. The installation structure is characterized in that... The axis of the bolt insertion hole and the internal thread is inclined relative to the normal of the mounting surface in such a way that the bolt, which is inserted into the bolt insertion hole and screwed into the internal thread, is inclined at its upper part in a direction further away from the flange head than at its lower part. On the first abutting surface, a first friction part is provided, the friction coefficient of which is greater than that of the outer peripheral surface of the ring plate portion than that of the first abutting surface.

4. A mounting structure for a flange head at the end of a flexible conduit, the mounting structure comprising a pair of clamping members disposed on both sides of an annular plate portion constituting the end of the flexible conduit and respectively having bolt insertion holes formed therethrough. The flange head has a first minor diameter portion that protrudes from the annular plate portion and has a diameter smaller than that of the annular plate portion. Each of the pair of clamping members includes a clamping member body extending along the outer peripheral surface of the ring plate portion and having bolt insertion holes at both ends in its extending direction, a second abutting surface disposed on the clamping member body and capable of abutting against the upper surface of the ring plate portion, and a third abutting surface disposed on the clamping member body and capable of abutting against the outer peripheral surface of the first small diameter portion. The mounting structure involves pressing and mounting the ring plate onto the mounting surface by engaging the bolt inserted into the bolt insertion hole with the internal thread of the mounting surface while the second abutting surface abuts against the upper surface of the ring plate and the third abutting surface abuts against the outer peripheral surface of the first small-diameter portion. The installation structure is characterized in that... The axis of the bolt insertion hole and the internal thread is inclined relative to the normal of the mounting surface in such a way that the bolt, which is inserted into the bolt insertion hole and screwed into the internal thread, is inclined at its upper part in a direction further away from the flange head than at its lower part. Each of the pair of clamping members further includes a first abutting surface disposed on the main body of the clamping member and capable of abutting against the outer peripheral surface of the ring plate portion. On the first abutting surface, a first friction part is provided, the friction coefficient of which is greater than that of the outer peripheral surface of the ring plate portion than that of the first abutting surface.

5. The mounting structure of the flange head at the end of the flexible conduit according to claim 4, characterized in that, On the third abutment surface, a third friction part is provided, the friction coefficient of which is greater than that of the outer peripheral surface of the first small diameter portion than that of the third abutment surface.

6. The mounting structure of the flange head at the end of the flexible conduit according to claim 5, characterized in that, The flange head also includes a second minor diameter portion that protrudes from the first minor diameter portion and has a diameter smaller than that of the first minor diameter portion. Each of the pair of clamping members further comprises a fourth abutting surface disposed on the main body of the clamping member and capable of abutting against the outer peripheral surface of the second small diameter portion. On the fourth abutment surface, a fourth friction part is provided, the friction coefficient of which is greater than that of the outer peripheral surface of the second small diameter portion than that of the fourth abutment surface.

7. The mounting structure of the flange head at the end of the flexible conduit according to any one of claims 3 to 5, characterized in that, A seat surface is provided on the upper surface of the clamping member body around the bolt insertion hole, the seat surface extending on a plane orthogonal to the axis of the bolt insertion hole and capable of abutting against the lower surface of the bolt head.

8. The mounting structure of the mounted part according to claim 1, characterized in that, When the axis of the bolt insertion hole and the internal thread is set to T, and the normal of the mounting surface is set to L, when the angle of inclination of the normal L relative to the axis T is set to θ, the angle θ is set to a value that satisfies 0 < θ ≤ 8.4°.

9. The mounting structure of the flange head at the end of the flexible conduit according to claim 3 or 4, characterized in that, When the axis of the bolt insertion hole and the internal thread is set to T, and the normal of the mounting surface is set to L, when the angle of inclination of the normal L relative to the axis T is set to θ, the angle θ is set to a value that satisfies 0 < θ ≤ 8.4°.

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