Mounting structure and fixtures

Abstract

To provide an attachment structure which can absorb a variation of an insertion assembling position of a fixing shaft when attaching an attachment member to a base member in which the fixing shaft such as a stud bolt is protrusively arranged, and an attachment tool for use therein.SOLUTION: When an insertion positioning piece 40 of a first component 4 is inserted and held to a positioning hole 30H of a plate-shaped part 30, and a tip part of a stud bolt 20 of a base member 2 is guided to an inclination guide face 52a of a second component 5 and inserted and held to a main body part 50 in a state that the second component 5 is engaged with the first component 4, the insertion positioning piece 40 of the first component 4 is deflected and deformed while maintaining the engagement with the second component 5, and a relative positional relation between the first component 4 and the plate-shaped part 30 is thereby adjusted along a surface direction of the plate-shaped part 30.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a mounting structure for two different members and a mounting fixture used therefor. [Background technology]

[0002] When mounting an instrument panel module on a stud bolt protruding from a dash panel, a structure is required to accommodate variations in the mounting position of the stud bolt relative to the instrument panel module. Conventionally, the opening width (diameter) of the stud bolt insertion hole in the instrument panel module was widened to allow the stud bolt to be inserted into the insertion hole even with variations, and the stud bolt was then tightened with a nut and washer after insertion to accommodate the variations and secure the module. However, since tightening work after insertion is necessary, improvements in workability are desired.

[0003] In response to this, Patent Document 1 describes a structure in which a two-part locking device is pre-attached to a plate-shaped mounting member by sandwiching it from above and below, and the stud bolt is inserted from below into a guide section provided in the lower part, and the tip of the stud is pressed against the slope of the guide section to slide, guiding it toward the back center.In this case, the locking device, which sandwiches the mounting member between two parts from above and below, allows the mounting member to move laterally, so it can be mounted even if the stud bolt's position varies. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6869924 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the fastener of Patent Document 1, when the two-part fastener is assembled to the mounting member, there is a possibility that the mounting position may vary. That is, it may be mounted too far outward from the mounting member's wide insertion hole. In this case, it may become impossible to insert the tip of the stud into the guide portion of the mounted fastener.

[0006] An object of the present invention is to provide a mounting structure and a mounting fixture for use therewith that can absorb variations in the insertion and assembly position of the fixed shaft when attaching a mounting member to a base member having a protruding fixed shaft such as a stud bolt, and that can more reliably insert and assemble the fixed shaft.

[0007] The mounting structure for solving the above problem is as follows: A mounting structure for mounting a mounting member having a plate-like portion with a positioning hole formed therethrough corresponding to a fixed shaft (e.g., a stud bolt, etc.) to a base member (e.g., a dash panel of a vehicle) from which a fixed shaft (e.g., a stud bolt, etc.) protrudes, a first member (first component) that is inserted into the positioning hole from a direction opposite to the side where the base member is located with respect to the plate-like portion and that has an insertion positioning piece that is flexible and deformable at least in a direction intersecting the insertion direction; a second member (second component) having: a cylindrical main body portion located between the base member and the plate-like portion and capable of holding the fixed shaft inserted from the base member side at a predetermined position inside; an expansion portion extending from the main body portion toward the base member side in a flared shape (flaring like a skirt) while surrounding the fixed shaft and having an inclined guide surface formed therein for guiding the tip end of the fixed shaft to the center of the main body portion when the fixed shaft is inserted; and an engagement portion extending from the main body portion toward the plate-like portion side and passing through the positioning hole to engage with the first member; When the insertion positioning piece of the first member is inserted and held in the positioning hole of the plate-like portion and the engaging portion of the second member is engaged (temporarily assembled state), and the tip of the fixed shaft of the base member is guided by the inclined guide surface of the expansion portion of the second member and inserted and held in the main body portion, the insertion positioning piece of the first member is flexibly deformed while maintaining the engagement with the second member, thereby adjusting the relative positional relationship between the first member and the plate-like portion along the surface direction of the plate-like portion.

[0008] According to the present invention, the first member (first component) is inserted and held in the positioning hole of the plate-shaped portion of the mounting member by the insertion positioning piece, thereby being positioned relative to the mounting member (positioning hole). Then, the second member (second component) is engaged with and assembled to the positioned first member. As a result, the mounting fixture assembled by engaging the second member (second component) with the first member is attached in a positioned state relative to the mounting member (positioning hole). Therefore, for example, the positioned mounting position can be set to a position that makes it easier to insert a fixed shaft inserted and fixed into the expansion portion of the second member. Furthermore, according to the present invention, when inserting the fixed shaft into the expansion portion, if the position of the tip of the fixed shaft is misaligned with the holding position of the main body, it is inserted and held in the main body while being guided by the inclined guide surface of the expansion portion. During this guidance, the first and second members slide toward the surface of the plate-shaped portion to absorb any misalignment of the fixed shaft, but the insertion positioning piece of the first member is located in a position that prevents this sliding. However, the insertion positioning piece allows the sliding by flexing, thereby absorbing any misalignment of the fixed shaft due to the sliding. That is, according to the present invention, it is possible to simultaneously position the first and second members relative to the mounting member (positioning holes) and absorb positional deviation of the fixed shaft.

[0009] The "positioning hole corresponding to the fixed shaft" means a positioning hole that serves as a guide for the mounting position when mounting the fixed shaft to the plate-like portion of the mounting member. In other words, the fixed shaft is mounted near the positioning hole in the plate-like portion.

[0010] The insertion positioning pieces are elastic locking pieces that protrude from two or more circumferential positions corresponding to the positioning holes, and are each flexible and deformable, with a locking claw at its tip end, so that when inserted into the positioning hole, they can be locked to the periphery of the positioning hole for assembly. With this configuration, the first member is assembled to the positioning hole and will not easily fall off, making it easier to engage the second member.

[0011] The first member (first component) has a head portion that covers the positioning hole and its periphery from the side opposite to the side where the base member is located when the first member (first component) is inserted and held in the positioning hole, and the head portion can be configured so that an inner peripheral recess is formed on the surface on the side where the base member is located, on the inner peripheral side from the protruding base end position of the insertion positioning piece. The presence of this inner peripheral recess facilitates flexural deformation of the insertion positioning piece.

[0012] When the first member (first component) is inserted and held in the positioning hole, it has a head portion that covers the positioning hole and its periphery from the side opposite the side where the base member is located. The head portion can have a recessed accommodation portion (which may include an inner peripheral recess) on the surface where the base member is located, capable of accommodating the insertion positioning piece that is deformed by bending from the protruding base end position of the insertion positioning piece toward the inner peripheral side. When the insertion positioning piece undergoes elastic deformation that tilts toward the inner peripheral side, which is the side opposite the protruding direction of the locking claw, the locking claw protrudes downward. By being able to accommodate the insertion positioning piece in the recessed accommodation portion, the amount of downward protrusion can be absorbed, thereby reducing interference with the plate-like portion when adjusting the relative positional relationship between the first member and the plate-like portion. This also contributes to reducing the vertical width of the head portion and making it more compact.

[0013] The second member may have opposing abutment portions that protrude toward and abut against the plate-like portion in a manner facing each other across the positioning hole when engaged with the first member inserted and held in the positioning hole of the plate-like portion by the engaging portion. By positioning the opposing abutment portions on both sides of the positioning hole, movement of the engaged first and second members toward the surface of the plate-like portion occurs stably in the form of a slide. Furthermore, the opposing abutment portions have a shape that is elongated in a predetermined direction on both sides of the position that sandwiches the positioning hole, ensuring a longer abutment surface with the plate-like portion, eliminating the risk of the first and second members dropping into the positioning hole when sliding.

[0014] The fixed shaft is a stud bolt, the main body accommodates and holds the stud bolt coaxially with a predetermined fixed axis and threadedly engaged with it, the engaging portion is coaxial with the fixed axis when the second member is engaged with the first member and protrudes through the positioning hole in a direction opposite to the side on which the base member is located, and a jig engaging portion can be provided on the protruding tip surface of the engaging portion that enables the entire second member to be rotated about the fixed axis using a predetermined jig. According to this configuration, the stud bolt threadedly engaged with the main body can be removed from the main body by rotating the entire second member about the fixed axis using a predetermined jig engaged with the jig engaging portion, making it possible to reuse the first member and the second member.

[0015] The mounting tool for solving the above problem is a mounting tool (fastener) used in the above mounting structure, and can be set in a set state in which the engaging portion of the second member is detachably engaged with the first member before the base member and the mounting member are attached. With this configuration, by keeping the first member and the second member in a set state, the mounting tool is easy to carry. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. [Figure 2] FIG. 2 is an exploded perspective view of FIG. 1. [Figure 3] FIG. [Figure 4] Cross section of Figure 1. [Figure 5] FIG. 5 is an enlarged cross-sectional view of part A in FIG. 4. [Figure 6] 6 is an enlarged cross-sectional view showing the deflection deformation of the insertion positioning piece of FIG. 5. [Figure 7] 7 is an enlarged cross-sectional view showing a state in which the insertion positioning piece of FIG. 6 is further bent. [Figure 8] 2A to 2C are cross-sectional views illustrating a procedure for forming the mounting structure of FIG. 1. [Figure 9] Cross-sectional view continuing from Figure 8. [Figure 10] Cross section B-B of Figure 9. [Figure 11] Cross-sectional view continuing from Figure 9. [Figure 12] Cross-sectional view continuing from Figure 11. [Figure 13] FIG. 13 is an explanatory diagram for explaining removal of the stud bolt in FIG. 12. [Figure 14] Plan view of Figure 13. [Figure 15] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0018] 1, this embodiment is a mounting structure 100 for mounting a mounting member 3 (e.g., a vehicle instrument panel module) having a plate-like portion 30 (bracket) with a positioning hole 30H (see FIG. 2) corresponding to the stud bolt 20, to a base member 2 (e.g., a vehicle dash panel) from which a stud bolt 20 (fixed shaft) protrudes, and a mounting fixture 1 is used for mounting. In the following description, the base member 2 side of the mounting structure 100 will be referred to as the lower side, and the opposite side (first component 4 side) will be referred to as the upper side.

[0019] The fixture 1 is made up of a first part 4 (first member) and a second part 5 (second member).

[0020] The first component 4 is a resin injection molded product shown in Figures 2 and 3. As shown in Figure 4, the first component 4 has an insertion positioning piece 40 that is inserted into and held in the positioning hole 30H from above (the side opposite to the side where the base member 2 is located) in the plate-like portion 30, and that is capable of flexural deformation at least in a direction intersecting the insertion direction (downward).

[0021] The first component 4 here has a head 41 that covers the positioning hole 30H of the plate-like component 30 and the hole periphery 30A from above (the side opposite to the side where the base member 2 is located), and as shown in Fig. 3, the insertion positioning piece 40 protrudes downward from the head 41. The head 41 has a central portion 41A formed in a disk shape around an axis Z4 that extends vertically, and an outer peripheral abutment portion 41B that is thinner than the central portion 41A and extends diagonally outward downward from the outer periphery of the central portion 41A. The central portion 41A has a central hole 41H that is formed through it in the direction of the axis Z4.

[0022] The insertion positioning pieces 40 are formed to protrude from three or more circumferential positions corresponding to the positioning holes 30H (see FIG. 10), and are elastic locking pieces each of which is flexible and has a locking claw 40A at its tip end. When inserted into the positioning hole 30H, each of the insertion positioning pieces 40 approaches or abuts against the inner wall surface of the positioning hole 30H, and the respective locking claws 40A are engaged with and assembled to the positioning hole 30H. As shown in FIG. 3, the insertion positioning pieces 40 here extend downward from three positions around the axis Z4 of the head 41 (first component 4) on the outer circumferential side of the central portion 41A, and the locking claws 40A protrude toward the outer circumferential side.

[0023] Furthermore, the first component 4 has a base-end inner peripheral recess 42 (see FIGS. 3 and 5) formed on its lower surface 41b (the side where the base member 2 is located) that is recessed upward from the protruding base end position of the insertion positioning piece 40 to the side opposite to the protruding side of the locking claw 40A (here, the inner peripheral side). The presence of this base-end inner peripheral recess 42 makes the insertion positioning piece 40 more likely to bend and deform (see FIGS. 6 and 7) so as to tilt toward the inner peripheral side.

[0024] Here, the head 41 has a base end peripheral recess 44 (see FIG. 3) formed on the lower surface 41b (the side where the base member 2 is located) that is recessed upward around the protruding base end of the insertion positioning piece 40, including the side of the base end inner peripheral recess 42. Here, the base end peripheral recess 44 is formed to penetrate vertically around the protruding base end of the insertion positioning piece 40 excluding the inner peripheral side. A connection part with the central side is formed on the inner peripheral side, and the recess formed at this connection part that is recessed upward is the base end inner peripheral recess 42 (see FIG. 5).

[0025] It should be noted that with respect to the base end inner circumferential recess 42 and the base end peripheral recess 44, the term "upward recessed" as used herein is not limited to a recessed shape with a bottom, but also includes a bottomless penetrating shape that penetrates in the vertical direction.

[0026] Furthermore, head 41 has, on its lower surface 41b (the side where base member 2 is located), a recessed accommodating portion 43 (see FIGS. 5 to 7) that can accommodate deflected insertion positioning piece 40 from the protruding base end position of insertion positioning piece 40 toward the side opposite to the protruding side of locking claw 40A (here, the inner peripheral side). As a result, even if locking claw 40A protrudes downward when insertion positioning piece 40 is deflected and tilted toward the inner peripheral side, at least a portion of locking claw 40A can be accommodated in recessed accommodating portion 43, and the thickness (vertical width) of first component 4 in this state can be reduced.

[0027] The concave accommodating portion 43 here includes the base-end inner peripheral recess 42, and is formed over a longer region on the side opposite to the protruding side of the locking claw 40A (here, the inner peripheral side) than the base-end inner peripheral recess 42. Furthermore, the concave accommodating portion 43 here is formed deeper on the side closer to the insertion positioning piece 40 (base-end inner peripheral recess 42).

[0028] 7 shows a state in which the insertion positioning piece 40 is bent to the maximum extent. In this state, the insertion positioning piece 40 not only bends by tilting around the base end side as a fulcrum, but also bends over the entire longitudinal direction of the insertion positioning piece 40. In FIG. 7, the plate-like portion 30 is thicker than in FIGS. 5 and 6, so such bending occurs.

[0029] The second component 5 is a resin injection molded body having a main body portion 50, an expanding portion 52, an engaging portion 51, and opposing abutting portions 54, 54.

[0030] 4, the main body 50 is a cylindrical portion that is located between the base member 2 and the plate-like portion 30 and is capable of accommodating and holding the stud bolt 20 inserted from the bottom (the base member 2 side). The cylindrical main body 50 accommodates and holds the stud bolt 20 therein, coaxially with a predetermined fixed axis Z5 and in a state where the stud bolt 20 is threadedly engaged with the tubular main body 50.

[0031] Specifically, the main body 50 has a cylindrical outer peripheral portion 50A and elastic pieces 50B extending obliquely upward and inward from its inner peripheral surface. The outer peripheral portion 50A here has arcuate opposing walls 50A1, 50A1 that face each other across the fixed axis Z5 in the circumferential direction, and plate-like opposing walls 50A2, 50A2 that extend inward (toward the fixed axis Z5) from a midpoint of a non-forming section of the arcuate opposing walls 50A1, 50A1 in the circumferential direction. The elastic pieces 50B are provided at multiple locations (two locations in this example) in the circumferential direction on the inner peripheral surfaces of the arcuate opposing walls 50A1, 50A1 and at multiple locations (two locations in this example) in the vertical direction. A female thread portion 50b that threadably engages with a male thread formed on the outer peripheral surface of the stud bolt 20 is formed at the tip of each elastic piece 50B.

[0032] When the stud bolt 20 is to be housed and held in the main body 50, the stud bolt 20 is inserted from below into the inner peripheral side of the outer peripheral portion 50A and abuts against the ceiling portion 50C. At this time, the tips of the elastic pieces 50B bend outward, causing the threads of the female threads 50b to ride over the threads on the outer peripheral surface of the stud bolt 20, allowing the stud bolt 20 to enter further (upward). The inserted stud bolt 20 abuts against the ceiling portion 50C, and the female threads 50b of each elastic piece 50B screw into the male threads on the outer peripheral surface, thereby holding it in a prevented state. When the stud bolt 20 abuts against the ceiling portion 50C, the assembler can confirm by touch or contact sound that the inserted stud bolt 20 has reached the prevented-removal position (assembly completion position). The ceiling portion 50C is formed with a receiving portion 50c (see Figure 4) that projects downward and is thicker to receive the stud bolt 20, with the tip of the stud bolt 20 abutting against the receiving portion 50c. Because the receiving portion 50c is thick, the abutment does not affect the engagement of the engaging portion 51. Note that the abutment is not essential. Furthermore, the thicker receiving portion 50c may be omitted if the engagement of the engaging portion 51 is unlikely to be affected by the abutment.

[0033] 4, the expansion portion 52 extends from the main body portion 50 toward the base member 2 side in a flared shape (flaring out like a skirt) while surrounding the stud bolt 20, and is internally formed with an inclined guide surface 52a for guiding the tip of the stud bolt 20 to the center of the main body portion 50 when the stud bolt 20 is inserted. The expansion portion 52 here has an entrance side opening 50p at its lower end and an exit side opening 50q at its upper end.

[0034] The inlet opening 50p at the lower end forms a wide opening that expands to a position radially outward from the outer circumferential surface of the main body 50, and serves as an entrance for the stud bolt 20 into the expanded portion 52. The outlet opening 50q at the upper end is an opening that corresponds to the diameter of the stud bolt, and opens narrower radially inward from the inner circumferential surface of the outer circumferential portion 50A of the main body 50, and serves as an entrance for the stud bolt 20 into the main body 50. The inclined guide surface 52a that extends from the inlet opening 50p at the lower end to the outlet opening 50q at the upper end is formed as a conical slope. Here, the openings of the inlet opening 50p and the outlet opening 50q and the conical slope are formed coaxially with the fixed axis Z5.

[0035] 4, the engaging portion 51 extends upward from the main body portion 50 (in the direction opposite to the side where the base member 2 is located) and passes through the positioning hole 30H to engage with the first component 4. The engaging portion 51 here is formed to protrude upward and be coaxial with the fixed axis Z5. Specifically, the engaging portion 51 has a shaft portion 51A that protrudes upward and is coaxial with the fixed axis Z5, elastic portions 51B that extend from the shaft portion 51A at multiple locations around the fixed axis Z5, folding back in the opposite direction (downward) around the outer periphery of the shaft portion 51A, and locking portions 51C at the tips of the elastic portions 51B.

[0036] As shown in FIG. 4 , when the opposing abutment portions 54, 54 are engaged with the first component 4 inserted and held in the positioning hole 30H of the plate-shaped portion 30 by the engagement portion 51, the opposing abutment portions 54, 54 face each other at positions sandwiching the positioning hole 30H and protrude upward toward and abut against the hole peripheral portion 30A of the positioning hole 30H of the plate-shaped portion 30. Here, the opposing abutment portions 54, 54 are each flat and formed parallel to each other. Specifically, the opposing abutment portions 54, 54 each have an L-shaped cross section that widens outward from the ceiling portion 50C of the main body portion 50 in the opposing directions sandwiching the positioning hole 30H and protrude upward, and the entire cross section, including the ceiling portion 50C, is formed to have a U-shaped cross section (approximately a U-shaped cross section).

[0037] The procedure for forming the mounting structure 100 will now be described.

[0038] First, as shown in FIG. 8 , the first component 4 is inserted and held in the positioning hole 30H formed through the plate-shaped portion 30 of the mounting member 3. Specifically, each insertion positioning piece 40 of the first component 4 is inserted downward into the positioning hole 30H of the plate-shaped portion 30. At this time, each insertion positioning piece 40 is bent and deformed toward the inner periphery, and as the locking claws 40A at the tip end move around to the base member 2 side of the plate-shaped portion 30, the bending deformation is released and the first component 4 is locked to the plate-shaped portion 30. Meanwhile, at this time, the outer peripheral abutting portion 41B of the head portion 41 abuts against the periphery of the positioning hole 30H in the plate-shaped portion 30, and the locking claws 40A and the outer peripheral abutting portion 41B sandwich the plate-shaped portion 30. In this way, the first component 4 is assembled to the plate-shaped portion 30 (positioning hole 30H) in a manner that prevents it from coming off.

[0039] At this time, each insertion positioning piece 40 is positioned inside the inner peripheral wall of the positioning hole 30H and comes close to or into contact with it (see FIG. 10). This positions the first component 4 with respect to the positioning hole 30H. Here, the first component 4 is positioned so that the axis Z4 of the first component 4 and the axis Z3 of the positioning hole 30H are aligned.

[0040] 9, the engaging portion 51 of the second component 5 is engaged with the first component 4 that has been assembled in a positioned state in the plate-shaped portion 30 (positioning hole 30H). This creates a temporary assembled state in which both the first component 4 and the second component 5 are assembled to the mounting member 3.

[0041] Specifically, the elastic portion 51B is inserted upward from below into the positioning hole 30H and the central hole 41H together with the shaft portion 51A. As the elastic portion 51B passes through the positioning hole 30H and the central hole 41H, it is pressed inward (toward the shaft portion 51A) by the inner wall surface of the central hole 41H, elastically deforming, and its radial width narrowing inward. This pressing force is released upon completion of passage through the central hole 41H, and the locking portion 51C, which has elastically returned to its original position and expanded outward, locks onto the inner wall surface of the central hole 41H and the upper surface of the peripheral portion. This creates an engaged state in which the second component 5 is engaged with the first component 4 in a manner that sandwiches the plate-like portion 30 and prevents it from coming loose, i.e., a provisionally assembled state in which the mounting fixture 1 is assembled to the mounting member 3.

[0042] At this time, the second part 5 passes through the center of the positioning hole 30H and the central hole 41H, as shown in Figure 10, and in the above-mentioned temporary assembly state, the axes Z4, Z3, Z5 of the first part 4, the positioning hole 30H, and the second part 5 are aligned.

[0043] 11 , in the above-mentioned temporary assembly state, the tip of the stud bolt 20 of the base member 2 is guided by the inclined guide surface 52a of the widened portion 52 of the second part 5, and is inserted and held in the main body part 50. At this time, the insertion positioning piece 40 of the first part 4 is flexed and deformed while maintaining the engagement between the first part 4 and the second part 5, and the relative positional relationship between the mounting tool 1 made up of the first part 4 and the second part 5 and the plate-like part 30 is adjusted along the surface direction of the plate-like part 30, so that the tip of the stud bolt 20 is inserted and held in the main body part 50. Here, the insertion and holding is achieved by the main body part 50 screwing onto the tip of the stud bolt 20.

[0044] Specifically, before the stud bolt 20 is inserted into the expanded portion 52, the engaging portion 51 of the second component 5 is engaged with the first component 4 with a gap S between the shank 51A and the inner wall surface of the positioning hole 30H (see FIG. 10). When the stud bolt 20 is inserted into the expanded portion 52, if the tip of the stud bolt 20 reaches the outlet-side opening 50q without coming into contact with the inclined guide surface 52a of the expanded portion 52, the tip of the stud bolt 20 will continue to advance from the outlet-side opening 50q until its tip surface abuts against the ceiling portion 50C, and will enter a held state (see FIG. 4) in which it is threadedly engaged with each elastic piece 50B (internal thread portion 50b) with its axis Z2 aligned with the fixed axis Z5.

[0045] However, when the stud bolt 20 is inserted into the expanded portion 52, the tip of the stud bolt 20 may come into contact with the inclined guide surface 52a of the expanded portion 52. In this case, as shown in FIG. 11 , the tip of the stud bolt 20 is guided by sliding on and along the inclined guide surface 52a (in the direction of arrow Q in FIG. 11 ) until it reaches the outlet opening 50q. However, during this sliding movement, the entire mounting fixture 1 (first component 4 and second component 5) is pushed downwardly along the inclined guide surface 52a (in the direction of arrow P in FIG. 11 ) by the tip of the stud bolt 20. This pushing of the mounting fixture 1 occurs as the opposing abutment portions 54, 54 slide on the lower surface of the plate-like portion 30, so the entire mounting fixture 1 moves along the surface direction of the plate-like portion 30. In other words, the tip of the stud bolt 20 pushes the entire mounting fixture 1 along the surface direction of the plate-like portion 30, thereby reaching the outlet opening 50q (see FIG. 12 ). When the stud bolt 20 reaches the outlet-side opening 50q, its tip enters through the outlet-side opening 50q and is inserted until its tip surface abuts against the ceiling portion 50C, and it is held in a state where it is threadedly engaged with each elastic piece 50B (internal thread portion 50b) with its axis Z2 aligned with the fixed axis Z5 (see FIG. 4).

[0046] However, this movement of the entire mounting fixture 1 should be prevented by the insertion positioning piece 40 of the first component 4 inserted into the positioning hole 30H, as shown in Figure 10. However, as the entire mounting fixture 1 is pushed out toward the tip of the stud bolt 20, as shown in Figure 12, the insertion positioning piece 40 located on the pushing direction side (the right side in Figures 11 and 12) is pushed by the inner peripheral wall of the positioning hole 30H, causing the pushed insertion positioning piece 40 to bend and deform, allowing the entire mounting fixture 1 to move. The insertion positioning piece 40, tilted by the bending, is accommodated in the recessed accommodation portion 43, as shown in Figures 6 and 7.

[0047] The movement of the entire mounting fixture 1 occurs within the movable range of the shaft portion 51A of the second part 5 within the positioning hole 30H. The movable range is the movable range (gap S) of the shaft portion 51A of the second part 5, which is arranged so as to pass through the positioning hole 30H.

[0048] In this embodiment, the second component 5 (see FIG. 9 ) engaged with the first component 4 positioned and held in the positioning hole 30H can be disengaged by bending the elastic portion 51B of the engaging portion 51 toward the shaft portion 51A. In this disengaged state, the engaging portion 51 can be removed from the first component 4 and the plate-like portion 30 by pulling it downward through the central hole 41H and the positioning hole 30H.

[0049] In this embodiment, the first component 4 is not engaged with the second component 5, and is merely positioned and held in the positioning hole 30H (see FIG. 8 ). By deflecting and deforming each insertion positioning piece 40 so that it tilts toward the inner periphery of the positioning hole 30H, the locking claws 40A can be released from the plate-shaped portion 30. The first component 4 can be removed from the positioning hole 30H by moving it upward in this unlocked state.

[0050] Furthermore, in the mounting fixture 1 of this embodiment, when the second component 5 is engaged with the first component 4 positioned and held in the positioning hole 30H (see FIGS. 4 and 12), the engagement portion 51 passes through the positioning hole 30H and protrudes upward (the opposite side to the side where the base member 2 is located). A jig engagement portion 51K that engages with a predetermined jig 6 is formed on the protruding tip surface 51k, as shown in FIGS. 13 and 14. Specifically, the protruding tip surface 51k here has a flat-head groove formed as the jig engagement portion 51K that can engage with the tip of a flat-head screwdriver, which is the predetermined jig 6. Therefore, by engaging the tip of the flat-head screwdriver 6 with the flat-head groove 51K and rotating the flat-head screwdriver 6 around the axis of the second component 5 (here, the fixed axis Z5: see FIG. 12) in this jig-engaged state, the stud bolt 20 that is threadedly engaged with and held in the main body 50 of the second component 5 can be removed from the second component 5 (main body 50).

[0051] 15 , before attachment to the base member 2 or the attachment member 3, the mounting fixture 1 of this embodiment can be set in a set state in which the engaging portion 51 of the second component 5 is detachably engaged with the first component 4. Here, with only the first component 4 and the second component 5 present, a secured assembled state (set state) can be achieved by inserting the engaging portion 51 of the second component 5 into the central hole 41H of the first component 4. Specifically, in the same way as engaging the second component 5 with the first component 4 positioned and held in the positioning hole 30H of the plate-shaped component 30, inserting the engaging portion 51 of the second component 5 into the central hole 41H without passing through the positioning hole 30H of the plate-shaped component 30 causes the locking portion 51C to move around the periphery of the central hole 41H toward the back in the insertion direction, thereby achieving a secured assembled state (set state).

[0052] Although one embodiment of the present invention has been described above, this is merely an example, and the present invention is not limited to this. Various modifications, such as additions and omissions, can be made based on the knowledge of those skilled in the art, as long as they do not deviate from the spirit of the claims.

[0053] In the above embodiment, when the insertion positioning piece 40 is inserted into the positioning hole 30H of the plate-shaped portion 30 and positioned, the first component 4 is assembled in a state where it is prevented from coming out by engaging with the positioning hole 30H, but it is sufficient that the insertion positioning piece 40 is at least positioned and held in the positioning hole 30H. For example, if the insertion positioning piece 40 does not have the locking claw 40A and is formed so as to be press-fitted into the positioning hole 30H, it is possible to position and hold the insertion positioning piece 40 in the positioning hole 30H.

[0054] Furthermore, the insertion positioning pieces 40 may be formed to protrude from two or more circumferential locations corresponding to the positioning hole 30H. When two insertion positioning pieces 40 are used, it is desirable that the contact surface of each insertion positioning piece 40 with the inner wall surface of the positioning hole 30H has a shape corresponding to the inner wall surface. If the positioning hole 30H is cylindrical as in the above embodiment, the contact surface can be formed as a curved surface with approximately the same diameter as the cylindrical positioning hole 30H. This allows the contact surface to be shaped to make surface contact with the inner wall surface of the positioning hole 30H, thereby improving the positioning accuracy when the insertion positioning pieces 40 are inserted into the positioning hole 30H. Note that this contact surface shape may also be applied to embodiments having three or more insertion positioning pieces 40. [Explanation of symbols]

[0055] 100 Mounting structure 1. Mounting fixture (fastener) 2 Base material 20 stud bolts 30H positioning hole 30A Hole Surrounding Area 30 Plate-shaped part 4 First part (first member) 40 Insertion positioning piece 40A Locking Claw 41 Head 42 Base end inner peripheral recess (inner peripheral recess) 43 Recessed storage section 5 Second part (second member) 50 Main body 51 Engagement portion 51k protruding tip surface 51K Jig engagement part 52 Expansion section 52a Inclined guideway 54 Opposing contact part 6 Specified jig

Claims

1. A mounting structure for mounting a mounting member having a plate-like portion with a positioning hole formed therethrough corresponding to the fixed shaft to a base member having a fixed shaft protruding therefrom, a first member having an insertion positioning piece that is inserted into and held in the positioning hole from a direction opposite to the side where the base member is located with respect to the plate-like portion, and that is flexible and deformable at least in a direction intersecting the insertion direction; a second member having: a cylindrical main body portion located between the base member and the plate-like portion, capable of holding the fixed shaft inserted from the base member side at a predetermined position inside; an expanding portion extending from the main body portion toward the base member side in a flared shape while surrounding the fixed shaft, and having an inclined guide surface formed therein for guiding the tip end of the fixed shaft to the center of the main body portion when the fixed shaft is inserted; and an engaging portion extending from the main body portion toward the plate-like portion side, passing through the positioning hole and engaging with the first member; and when the insertion positioning piece of the first member is inserted and held in the positioning hole of the plate-shaped portion and the engaging portion of the second member is engaged, and the tip end of the fixed shaft of the base member is guided by the inclined guide surface of the expansion portion of the second member and inserted and held in the main body portion, the insertion positioning piece of the first member is flexibly deformed while maintaining the engagement with the second member, thereby adjusting the relative positional relationship between the first member and the plate-shaped portion along the surface direction of the plate-shaped portion.

2. The mounting structure described in claim 1, wherein the insertion positioning pieces are formed to protrude from two or more circumferential locations corresponding to the positioning holes, each of which is flexible and deformable, and is an elastic locking piece with a locking claw at its tip end, and when inserted into the positioning hole, it is engaged with the hole periphery of the positioning hole and assembled.

3. the first member has a head portion that covers the positioning hole and the periphery of the positioning hole from a side opposite to a side on which the base member is located when the first member is inserted and held in the positioning hole; 2. The mounting structure according to claim 1, wherein the head has an inner peripheral recess formed on a surface on the side where the base member is located, the inner peripheral side from the protruding base end position of the insertion positioning piece.

4. the first member has a head portion that covers the positioning hole and the periphery of the positioning hole from a side opposite to a side on which the base member is located when the first member is inserted and held in the positioning hole; The mounting structure described in claim 1, wherein the head has a recessed accommodating portion on the surface on which the base member is located, extending from the protruding base end position of the insertion positioning piece toward the inner periphery, capable of accommodating the insertion positioning piece that has been bent and deformed toward the inner periphery.

5. 2. The mounting structure according to claim 1, wherein the second member has opposing abutment portions that protrude toward and abut against the plate-shaped portion in a manner facing each other across the positioning hole when engaged with the first member inserted and held in the positioning hole of the plate-shaped portion by the engagement portion.

6. the fixed shaft is a stud bolt, the main body accommodates and holds the stud bolt therein in a manner that is coaxial with a predetermined fixed axis and is threadably engaged with the stud bolt; When the second member is engaged with the first member, the engaging portion is coaxial with the fixed axis and protrudes through the positioning hole in a direction opposite to the side where the base member is located, and 2. The mounting structure according to claim 1, wherein a jig engaging portion is provided on a protruding tip surface of the engaging portion, which enables the entire second member to be rotated around the fixed axis by a predetermined jig.

7. A mounting fixture used in the mounting structure according to claim 1, A mounting fixture characterized in that, before the base member and the mounting member are attached, the engaging portion of the second member is in a set state in which it is detachably engaged with the first member.

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