Fastening structure

Abstract

The invention provides a fastening structure which can be firmly installed on one part to be installed and can be easily installed on the other part to be installed. The second member (4) to be mounted of the fastening structure (20) is connected to the first member (1) to be mounted via a jig (21) in a posture so as to face each other with a space therebetween. The jig (21) is configured from two members, i.e., a metal eyelet member (24) and a pin member (37). A first engagement section (22) of the jig (21) is attached to the first member (1) to be mounted in a non-expanded state, when the pin member (37) is pressed in and the first engagement section (22) is deformed to an expanded state, the jig (21) engages with the first member (1) to be mounted, the second member (4) to be mounted is attached to a second engagement section (23) of the jig (21), and when the jig (21) is rotated, the jig (21) engages with the second member (4) to be mounted.

Description

TECHNICAL FIELD

[0001] The present application relates to a fastening structure for mounting a member of one party to a member of another party. BACKGROUND

[0002] In the past, a bottom cover of an automobile has an opening portion for exposing a jacking point, and the opening portion is plugged by a cover. The cover is mounted to a side sill cover or the like via a clamp, and is detached at the time of jacking. Thus, as a clamp for mounting and detaching a member of one party (for example, a side sill cover) to a member of another party (for example, a cover), for example, there is the technology described in Patent Literature 1 (hereinafter, the technology described in Patent Literature 1 will be referred to as "Literature Known 1 Invention").

[0003] The clamp of Literature Known 1 Invention is interposed between two panels, and has an insertion portion that is inserted into a hole of a panel of one party and a fixing portion that is inserted into a hole of a panel of another party. First, the insertion portion is mounted to the panel of one party, and in this state, the panel of another party is mounted to the fixing portion. Specifically, the clamp of Literature Known 1 Invention is made of resin, and the insertion portion has an elastic piece that is slightly larger than the hole of the panel of one party. The elastic piece is slightly elastically deformed when passing through the hole, and is restored after passing through the hole, thereby being caught to the edge of the hole.

[0004] PRIOR ART DOCUMENTS

[0005] PATENT LITERATURE

[0006] Patent Literature 1: Japanese Patent Application Laid-Open No. 2009-115148 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] However, as described above, in Literature Known 1 Invention, the elastic piece is caught to the edge of the hole by the slight difference in size before and after the elastic deformation, and thus the elastic piece is easily detached from the hole. In addition, when the panel of another party is mounted to the fixing portion after the insertion portion is mounted to the panel of one party, the insertion portion sometimes becomes a shaft and rotates, and the panel of another party is difficult to be mounted to the fixing portion.

[0009] The present application has been made in view of such circumstances, and has an object to provide a fastening structure that is firmly mounted to a mounted member of one party, and easily mounts a mounted member of another party.

[0010] MEANS FOR SOLVING THE PROBLEMS

[0011] To achieve the above object, the fastening structure of the present application is characterized in that a metal eye member and a pin member are connected to each other in advance, the metal eye member has a main body portion provided with an insertion hole and mounted to a first mounted member, a plurality of leg portions extended from the periphery of the insertion hole and inserted into a first mounted hole portion of the first mounted member, and an arm portion formed on the side opposite to the leg portions with respect to the main body portion and inserted into a second mounted hole portion of a second mounted member, the pin member has a shaft portion inserted into the insertion hole, a first engagement portion composed of the leg portions and the shaft portion is inserted into the first mounted hole portion in a non-diameter-expanded state in which the leg portions are not expanded, and the shaft portion is pressed with respect to the main body portion to become a diameter-expanded state in which the leg portions are expanded, thereby becoming the first mounted member engagement state.

[0012] The fastening structure of the present application is characterized in that the shaft portion has a positioning protrusion portion which protrudes outward from the leg portions in the non-diameter-expanded state.

[0013] The fastening structure of the present application is characterized in that the positioning protrusion portion is continuous from the tip end portion of the leg portions to the main body portion in the non-diameter-expanded state, and a groove portion which does not protrude outward from the leg portions in the diameter-expanded state is formed at one end of the main body portion side in the positioning protrusion portion.

[0014] The fastening structure of the present application is characterized in that a pair of the arm portions protrude outward from the main body portion in a direction in which they are separated from each other, and in the second mounted member temporary holding state in which the arm portions are inserted into the second mounted hole portion and disposed on the side opposite to the first mounted member with respect to the second mounted member, and the first mounted member engagement state, the arm portions are engaged with the second mounted member by forward rotation with the first engagement portion as a shaft, thereby becoming the second mounted member engagement state.

[0015] The fastening structure of the present application is characterized in that the arm portions have fitting protrusion portions which protrude toward the second mounted member in the second mounted member temporary holding state, and the fitting protrusion portions are fitted to the second mounted member in the second mounted member engagement state.

[0016] The fastening structure of the present application is characterized in that the pin member has a head portion and a shaft portion extending from the head portion, and the head portion has an inclined surface portion inclined outward as it approaches the shaft portion.

[0017] The fastening structure of the present application is characterized in that the first and / or second installed member has a rotation restricting portion that restricts forward rotation in the second installed member engaged state or restricts reverse rotation opposite to the forward rotation in the second installed member temporarily held state.

[0018] The fastening structure of the present application is characterized in that the second installed member has a guide portion that guides sliding of the arm portion relative to the second installed member during a process from the second installed member temporarily held state to the second installed member engaged state.

[0019] The fastening structure of the present application is characterized in that the guide portion is an inclined surface rising from a rim of the second installed hole portion in the direction of the forward rotation.

[0020] The fastening structure of the present application is characterized in that the guide portion is an inclined surface rising from a rim of the second installed hole portion in the direction of the forward rotation.

[0021] The fastening structure of the present application is characterized in that the guide portion is an inclined surface rising from a rim of the second installed hole portion in the direction of the forward rotation.

[0022] Inventive Effects

[0023] The fastening structure of the present application is characterized in that the fastening structure is inserted into a first installed hole portion formed in the first installed member to engage with the first installed member in a first installed member engaged state, and is inserted into a second installed hole portion formed in the second installed member to engage with the second installed member in a second installed member engaged state, thereby allowing the second installed member to be installed opposite to the first installed member, wherein a metal eye member having a main body portion formed with an insertion hole and installed in the first installed member, a plurality of leg portions extending from a periphery of the insertion hole and inserted into the first installed hole portion, and an arm portion formed on a side opposite to the leg portion relative to the main body portion and inserted into the second installed hole portion, and a pin member having a shaft portion inserted into the insertion hole are pre-linked to each other, a first engagement portion composed of the leg portion and the shaft portion is inserted into the first installed hole portion in a non-diameter-expanded state capable of being inserted into the first installed hole portion, the shaft portion is pressed relative to the main body portion, thereby expanding the leg portion in a diameter-expanded state, and thereby the first installed member engaged state is achieved.

[0024] That is, the fastening structure is constituted of two members of the metal eye member and the pin member (hereinafter, the member in which the metal eye member and the pin member are joined will be referred to as "the jig"), and in a state in which the first engaging portion is inserted into the first installed hole portion, the shaft portion of the pin member pushes the leg portion of the metal eye member from the inside, so that the first engaging portion becomes a state in which the diameter is expanded, and the fastening structure becomes a first installed member engaging state. The first engaging portion is not engaged with the first installed member only by elastic deformation of the leg portion, and since the leg portion is pushed from the inside by the shaft portion in an elastically deformed state, the first engaging portion does not return to a non-expanded diameter state by chance. Therefore, the first engaging portion is firmly installed to the first installed member, and the first installed member engaging state is firm. Thus, the jig is prevented from rotating by chance when the second installed member is installed, and therefore the second installed member is easily installed.

[0025] In the fastening structure of the present application, the shaft portion has a positioning protrusion that protrudes toward the outside of the leg portion in the non-expanded diameter state. Assuming that a slit or the like that engages with the positioning protrusion is formed in the edge of the first installed hole portion, the posture of the first engaging portion when inserted into the first installed hole portion is determined by the positioning protrusion and the slit or the like. Therefore, the first engaging portion can be prevented from being inserted into the first installed hole portion in a wrong posture.

[0026] In the fastening structure of the present application, in the non-expanded diameter state, the positioning protrusion is continuous from the tip portion of the leg portion to the main body portion, and the end of the main body portion side in the positioning protrusion is formed with a groove portion that does not protrude toward the outside of the leg portion in the expanded diameter state. In the non-expanded diameter state, the positioning protrusion is engaged with the slit or the like of the first installed hole portion, so that the rotation by chance when the second installed member is installed is prevented, and therefore the second installed member is easily installed. On the other hand, in the expanded diameter state, the positioning protrusion passes through the slit or the like of the first installed hole portion, and the groove portion is disposed in the slit or the like, so that the positioning protrusion is not engaged with the slit or the like, and the jig can be rotated in the normal direction. When the jig is rotated in the normal direction, the step portion of the boundary of the groove portion and the positioning protrusion is shifted from the slit or the like, and even in a case in which the jig is lifted by chance, the step portion is engaged with the first installed member. Therefore, the jig can be prevented from being detached from the first installed member.

[0027] In the fastening structure of the present application, a pair of arm portions protrude from the main body portion toward the outside in directions in which the arm portions are separated from each other, and in a state in which the arm portions are inserted into the second installed hole portion and disposed on the side opposite to the first installed member with respect to the second installed member in a second installed member temporarily held state and the first installed member engaging state, the arm portions are engaged with the second installed member by rotation in the normal direction with the first engaging portion as the axis, so that the second installed member engaging state is achieved. That is, by rotation of the jig in the normal direction, the second installed member temporarily held state becomes the second installed member fitted state. Since the engagement is achieved by rotation in a direction different from the insertion, the second installed member engaging state is firm compared to a case in which the engagement is achieved only by the insertion.

[0028] In the fastening structure of the present application, the arm portion has an engaging protrusion that protrudes toward the second mounted member in the second mounted member temporarily held state, and the engaging protrusion is engaged with the second mounted member in the second mounted member engaged state. Thus, the second mounted member engaged state is firm. For example, unexpected rotation due to impact such as vibration can be prevented.

[0029] In the fastening structure of the present application, the pin member has a head portion and a shaft portion extending from the head portion, and the head portion has an inclined surface portion that inclines outward as it goes toward the shaft portion. When the head portion passes through the second mounted hole portion in mounting the second mounted member, the rim of the second mounted hole portion is guided along the inclined surface portion. Thus, the second mounted member is easily mounted.

[0030] In the fastening structure of the present application, the first mounted member and / or the second mounted member has a rotation restricting portion that restricts forward rotation in the second mounted member engaged state or restricts reverse rotation that is reverse to the forward rotation in the second mounted member temporarily held state. Thus, unexpected rotation of the jig is prevented, and the second mounted member is prevented from falling off.

[0031] In the fastening structure of the present application, the second mounted member has a guide portion that guides sliding of the arm portion with respect to the second mounted member in a process from the second mounted member temporarily held state to the second mounted member engaged state. By making the arm portion slide along the guide portion, the forward rotation is facilitated. Thus, the second mounted member is easily mounted.

[0032] In the fastening structure of the present application, the guide portion is an inclined surface that rises from the rim of the second mounted hole portion in the direction of the forward rotation. The arm portion smoothly slides along the inclined surface, and thus excessive stress is not generated, and the forward rotation becomes smooth. Thus, the second mounted member is easily mounted.

[0033] In the fastening structure of the present application, an engaging recess portion in which the engaging protrusion is engaged is formed in the guide portion. Thus, the second mounted member engaged state is firm.

[0034] In the fastening structure of the present application, a slit in which the positioning protrusion is engaged is formed in the rim of the first mounted hole portion. The posture of the first engaging portion when inserted into the first mounted hole portion is determined by the positioning protrusion and the slit. Thus, the first engaging portion is prevented from being inserted into the first mounted hole portion in a wrong posture. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is an exploded perspective view of a jig that constitutes the fastening structure of the embodiment of the present application.

[0036] Figure 2 is a perspective view of a jig that constitutes the fastening structure of the embodiment of the present application.

[0037] Figure 3 is a plan view of a clip that constitutes a fastening structure of an embodiment of the present application.

[0038] Figure 4 is a front view of a clip that constitutes a fastening structure of an embodiment of the present application.

[0039] Figure 5 is a side view of a clip that constitutes a fastening structure of an embodiment of the present application.

[0040] Figure 6 is a bottom view of a clip that constitutes a fastening structure of an embodiment of the present application.

[0041] Figure 7 is a front view of a clip that constitutes a fastening structure of an embodiment of the present application after deformation.

[0042] Figure 8 is a side view of a clip that constitutes a fastening structure of an embodiment of the present application after deformation.

[0043] Figure 9 is Figure 3 is a sectional view of a clip that constitutes a fastening structure of an embodiment of the present application.

[0044] Figure 10 is a sectional view of a clip that constitutes a fastening structure of an embodiment of the present application after deformation. Figure 9

[0045] is a perspective view of a first member to be fastened that constitutes a fastening structure of an embodiment of the present application. Figure 11

[0046] is a perspective view of a second member to be fastened that constitutes a fastening structure of an embodiment of the present application. Figure 12

[0047] is a front view of a first fastening process that shows a first process of fastening of a fastening structure of an embodiment of the present application. Figure 13

[0048] is a front sectional view of a first fastening process that shows a first process of fastening of a fastening structure of an embodiment of the present application. Figure 14

[0049] is a bottom sectional view of a first fastening process that shows a first process of fastening of a fastening structure of an embodiment of the present application. Figure 15 Figure 13

[0050] Figure 16 ​​is a second fastening process front view of a second fastening process of the fastening of the fastening configuration representing an embodiment of the present application.

[0051] Figure 17 is a second fastening process front sectional view of a second fastening process of the fastening of the fastening configuration representing an embodiment of the present application.

[0052] Figure 18 is Figure 13 is a second fastening process bottom sectional view of a second fastening process of the fastening of the fastening configuration representing an embodiment of the present application.

[0053] Figure 19 is a third fastening process front view of a third fastening process of the fastening of the fastening configuration representing an embodiment of the present application.

[0054] Figure 20 is a third fastening process top view of a third fastening process of the fastening of the fastening configuration representing an embodiment of the present application.

[0055] Figure 21 is a fourth fastening process front view of a fourth fastening process of the fastening of the fastening configuration representing an embodiment of the present application.

[0056] Figure 22 is a fourth fastening process top view of a fourth fastening process of the fastening of the fastening configuration representing an embodiment of the present application.

[0057] Figure 23 is Figure 22 is a fourth fastening process front sectional view of a fourth fastening process of the fastening of the fastening configuration representing an embodiment of the present application.

[0058] Figure 24 is a fifth fastening process front view of a fifth fastening process of the fastening of the fastening configuration representing an embodiment of the present application.

[0059] Figure 25 is a fifth fastening process top view of a fifth fastening process of the fastening of the fastening configuration representing an embodiment of the present application.

[0060] Figure 26 is Figure 25 is a fifth fastening process front sectional view of a fifth fastening process of the fastening of the fastening configuration representing an embodiment of the present application.

[0061] in the figure:

[0062] 1 - first mounted member, 2 - first mounted hole portion, 3 - slit, 4 - second mounted member, 5 - second mounted hole portion, 6 - circular hole portion, 7 - square hole portion, 8 - guide portion, 9 - fitting recess, 10 - rotation restriction portion, 20 - fastening structure, 21 - clamp, 22 - first engagement portion, 23 - second engagement portion, 24 - metal eye member, 25 - main body portion, 26 - base portion, 27 - insertion hole, 28 - peripheral wall portion, 29 - main body flange portion, 31 - leg portion, 32 - front end portion, 33 - inner protrusion portion, 34 - arm portion, 35 - restriction protrusion portion, 36 - fitting protrusion portion, 37 - pin member, 38 - head portion, 39 - inclined surface portion, 40 - shaft portion, 41 - guide protrusion portion, 42 - positioning protrusion portion, 43 - groove portion, 44 - step portion, 45 - non-positioning protrusion portion, 46 - guide groove portion, 47 - raised portion, 48 - locking groove, 49 - lower end portion, 50 - pin flange portion. DETAILED DESCRIPTION

[0063] Hereinafter, a fastening structure of an embodiment of the present application will be described based on the drawings. The fastening structure 20 of the present embodiment, for example, mounts a second mounted member 4 (refer to Figure 12 ) such as a cover in a posture opposed at a spaced interval to a first mounted member 1 (refer to Figure 11 ) such as a rocker panel, and links (refer to Figures 13-26 ) the mounted members 1, 4 via a clamp 21. The clamp 21 is configured of two members, a metal eye member 24 and a pin member 37 (refer to Figure 1 ), and the metal eye member 24 and the pin member 37 are linked to each other in advance (refer to Figure 2 ). The metal eye member 24 and the pin member 37 relatively move and deform in the linked state (refer to Figures 3-10 ). Further, hereinafter, a direction in which the metal eye member 24 is pressed into the pin member 37 will be referred to as Down, a direction in which the pin member 37 is pulled out from the metal eye member 24 will be referred to as Up, and side directions orthogonal to the up-down direction will be referred to as Right, Left, Front, and Back, respectively (refer to Figure 1 ).

[0064] As shown in Figure 1 and Figure 2 , the clamp 21 is used in a state in which the two members are linked in advance. As shown in Figure 1 , the pin member 37 has a head portion 38, a shaft portion 40 extending from the head portion 38 and linked to the metal eye member 24, and a pin flange portion 50 formed between the head portion 38 and the shaft portion 40 and restricting a movable region of the pin member 37 with respect to the metal eye member 24.

[0065] An inclined surface portion 39 is formed on the upper surface of the head portion 38. The inclined surface portion 39 is a pair of portions inclined toward the front and rear outer sides as the direction toward the shaft portion 40, that is, the lower side. The pin flange portion 50 is a flat plate shape and is disposed directly below the head portion 38.

[0066] The shaft portion 40 is connected to the lower surface of the pin flange portion 50 and extends toward the lower side. On the outer side surface of the shaft portion 40, a guide protrusion portion 41 and a guide groove portion 46 that guide the movement of the pin member 37 with respect to the metal eye member 24, and a protrusion portion 47 that deforms the metal eye member 24 are formed. The guide protrusion portion 41 protrudes toward the four outer sides of the front, rear, left, and right as the sides, and extends in a linear shape from the pin flange portion 50 to the lower end portion 49 of the shaft portion 40 in the up and down direction. The left and right guide protrusion portions 41 are positioning protrusion portions 42 that protrude more than the front and rear guide protrusion portions 41, and the front and rear guide protrusion portions 41 are non-positioning protrusion portions 45. The positioning protrusion portions 42 continue from the pin flange portion 50 to the lower end portion 49, and a groove portion 43 is formed at the boundary portion with the pin flange portion 50. The groove portion 43 is recessed more than the positioning protrusion portions 42 toward the center of the shaft portion 40. A step portion 44 is formed at the boundary between the positioning protrusion portions 42 and the groove portion 43. The non-positioning protrusion portions 45 continue from the pin flange portion 50 to the lower end portion 49.

[0067] The guide groove portion 46 is formed between the guide protrusion portions 41 from the pin flange portion 50 to the lower end portion 49 of the shaft portion 40. The protrusion portion 47 is formed at a portion of the middle of the guide groove portion 46 and protrudes more than the other portions of the guide groove portion 46 toward the outer sides of the sides. A portion of the protrusion portion 47 is recessed to form a locking groove 48.

[0068] The metal eye member 24 has a main body portion 25 that links the pin member 37, a plurality of leg portions 31 that extend from the main body portion 25 and are inserted into the first mounted member 1, and an arm portion 34 that is formed in the main body portion 25 and is inserted into the second mounted member 4.

[0069] The main body portion 25 has a base plate portion 26 that is a circular plate shape, a peripheral wall portion 28 that stands up from the circumferential edge of the base plate portion 26, and a main body flange portion 29 that extends from the peripheral wall portion 28. The base plate portion 26 is formed with an insertion hole 27 into which the shaft portion 40 of the pin member 37 is inserted. The insertion hole 27 is a cross shape that imitates the shape of the shaft portion 40 of the pin member 37 that has four guide protrusion portions 41. The peripheral wall portion 28 is a circular ring shape that imitates the circumference of the base plate portion 26. The main body flange portion 29 is a pair of portions that extend toward the front and rear outer sides from the lower end of the peripheral wall portion 28.

[0070] The leg portions 31 extend downward from around the insertion hole 27. An inner protrusion 33 protruding inward is formed on the inner side of the lower end of the leg portions 31, i.e., the front end portions 32. Arm portions 34 are formed on the side opposite the leg portions 31 with respect to the main body portion 25. The arm portions 34 protrude in directions away from each other from the upper end of the peripheral wall portion 28 toward the left and right outer sides. The arm portion 34 on the right side has a restriction protrusion 35 protruding downward. The lower surface of the restriction protrusion 35 is a flat surface. The arm portion 34 on the left side has a fitting protrusion 36 protruding downward. The fitting protrusion 36 is substantially semispherical and protrudes more than the restriction protrusion 35 (see FIG. 2). Figure 4 .

[0071] The shaft portion 40 of the pin member 37 is inserted into the insertion hole 27 of the metal eye member 24 from above, and the pin member 37 is coupled to the metal eye member 24 to become the clamp 21. The clamp 21 is composed of the first engagement portion 22 of the leg portions 31 and the shaft portion 40, and the second engagement portion 23 of the head portion 38 of the pin member 37 and the arm portions 34 of the metal eye member 24. As shown in FIG. 1, when the pin member 37 is in the upper limit position with respect to the metal eye member 24, the first engagement portion 22 is in a non-diameter-expanded state. Figures 2-6 As shown in FIG. 1, when the pin member 37 is in the upper limit position with respect to the metal eye member 24, the first engagement portion 22 is in a non-diameter-expanded state. In the non-diameter-expanded state, the leg portions 31 extend straight downward in an initial posture, and the leg portions 31 are not expanded outward to the side. Figures 7-10 As shown in FIG. 1, when the pin member 37 is in the upper limit position with respect to the metal eye member 24, the first engagement portion 22 is in a non-diameter-expanded state. In the non-diameter-expanded state, the leg portions 31 extend straight downward in an initial posture, and the leg portions 31 are not expanded outward to the side.

[0072] As shown in FIG. 1, when the pin member 37 is in the upper limit position with respect to the metal eye member 24, the first engagement portion 22 is in a non-diameter-expanded state. In the non-diameter-expanded state, the leg portions 31 extend straight downward in an initial posture, and the leg portions 31 are not expanded outward to the side. Figures 2-6 As shown in FIG. 1, when the pin member 37 is in the upper limit position with respect to the metal eye member 24, the first engagement portion 22 is in a non-diameter-expanded state. In the non-diameter-expanded state, the leg portions 31 extend straight downward in an initial posture, and the leg portions 31 are not expanded outward to the side. Figure 14 On the other hand, the non-positioning protrusion 45 of the guide protrusion 41 does not protrude from the leg portions 31.

[0073] As shown in FIG. 1, when the pin member 37 is in the upper limit position with respect to the metal eye member 24, the first engagement portion 22 is in a non-diameter-expanded state. In the non-diameter-expanded state, the leg portions 31 extend straight downward in an initial posture, and the leg portions 31 are not expanded outward to the side. Figures 7-10 When the pin member 37 is pressed downward in the non-diameter-expanded state, the leg portions 31 are expanded outward to the side in the first engagement portion 22 as the shaft portion 40 descends, the raised portion 47 of the shaft portion 40 pushes the inner protrusion 33 of the leg portions 31 outward to the side, and the leg portions 31 are expanded outward to the side. When the pin flange portion 50 of the pin member 37 hits the base plate portion 26 of the metal eye member 24, the descent of the pin member 37 is stopped, and the inner protrusion 33 is caught in the catch groove 48 of the raised portion 47. In this way, the first engagement portion 22 is in a diameter-expanded state.

[0074] The groove 43 of the pin member 37 is formed at the end portion of the main body 25 side of the eyelet member 24. Therefore, in the expanded state, the groove 43 is exposed below the main body 25 and does not extend from the leg portion 31 of the eyelet member 24 (see FIG. Figure 17 ).

[0075] The clamp 21 is configured as described above. Next, the first mounted member 1 and the second mounted member 4 coupled by the clamp 21 will be described with reference to the drawings.

[0076] like Figure 11 As shown, a portion of the first mounted component 1 is plate-shaped. Specifically, the first mounted component 1 has a plate-shaped portion. A first mounting hole 2 is formed in the first mounted component 1. While the first mounting hole 2 is generally circular, it is not a perfect circle due to a slit 3 formed in a portion. The first engaging portion 22 of the clamp 21 is inserted into the first mounting hole 2, and the positioning protrusion 42 of the pin member 37 is engaged with the slit 3.

[0077] like Figure 12 As shown, a portion of the second mounted component 4 is plate-shaped. Specifically, the second mounted component 4 has a plate-shaped portion. A second mounting hole 5 is formed in the second mounted component 4, and a guide portion 8 and a rotation restricting portion 10 are formed around this second mounting hole 5. The second engaging portion 23 of the clamp 21 is inserted into the second mounting hole 5. Therefore, the second mounting hole 5 has a circular hole portion 6 that mimics the shape of the main body 25 and peripheral wall 28 of the eyelet 24, and a square hole portion 7 that mimics the shape of the arm 34 of the eyelet 24. The guide portions 8 facilitate rotation of the clamp 21. The guide portions 8 are a pair of upwardly inclined surfaces that curve from the edge of the square hole 7 along a circle centered on the center of the circular hole 6. The guide portions 8 are grooves, so their bases are located deeper than the top surface in the thickness direction of the mounted component 4, and their tops are located near the top surface. A fitting recess 9 is formed at the top of the guide portions 8. The fitting recess 9 is hemispherical and concave, following the shape of the fitting protrusion 36 of the arm portion 34. The rotation restricting portion 10 restricts excessive rotation of the clamp 21. The rotation restricting portions 10 are a pair and are arranged at the front ends of the fitting protrusion 36 along the circumference of the circular hole portion 6. The rotation restricting portions 10 protrude.

[0078] Each of the mounted components 1 and 4 is constructed as described above. Next, the use order, function and effect of the fastening structure 20 will be described based on the accompanying drawings. The first engaging portion 22 of the clamp 21 before being mounted on each of the mounted components 1 and 4 is in a non-expanded state (see Figures 2-7). The jig 21 is attached to the first attached member 1, thereby becoming the first attached member temporary holding state (see Figures 13-15 ). In this state, when the first engaging portion 22 is deformed to the expanded diameter state, the jig 21 is engaged with the first attached member 1, thereby becoming the first attached member engaged state (see Figures 16-18 ). Next, the second attached member 4 is attached to the jig 21, thereby becoming the second attached member temporary holding state (see Figure 19 and 20). In this state, when the jig 21 is rotated, the jig 21 is engaged with the second attached member 4, thereby becoming the second attached member engaged state (see Figures 21-26 ).

[0079] <First attached member temporary holding state>

[0080] As shown in Figures 13-15 , the first engaging portion 22 in the non-expanded diameter state is inserted into the first attached hole portion 2 of the first attached member 1, thereby becoming the first attached member temporary holding state. In the first attached member temporary holding state, the main body portion 25 of the metal eye member 24 is attached to the upper surface of the first attached member 1. The first engaging portion 22 in the non-expanded diameter state can be inserted into the first attached hole portion 2 because the leg portions 31 are not expanded. The positioning protrusion 42 of the pin member 37 projects to the lateral outside from the leg portions 31 of the metal eye member 24, and therefore the position through which the positioning protrusion 42 can pass is the position of the slit 3 in the first attached hole portion 2. Therefore, the posture of the first engaging portion 22 when inserted into the first attached hole portion 2 is determined by the positioning protrusion 42 and the slit 3. Thus, the first engaging portion 22 is prevented from being inserted into the first attached hole portion 2 in a wrong posture. Also, when the positioning protrusion 42 is engaged with the slit 3, accidental rotation of the jig 21 is prevented when the second attached member 4 is attached to become the second attached member temporary holding state. Therefore, the second attached member 4 is easily attached.

[0081] <First attached member engaged state>

[0082] As shown in Figures 16-18As shown, while the first mounted component is temporarily held, the first engaging portion 22 is expanded, thereby achieving the first mounted component engagement state. While the first mounted component is engaged, when the pin 37 is pressed into the eyelet 24, the legs 31 of the eyelet 24 are laterally expanded outward by the shaft 40, causing the first engaging portion 22 to expand. The legs 31 are elastically deformed and pushed away from the inside by the shaft 40, preventing the first engaging portion 22 from accidentally returning to its non-expanded state. Consequently, the first engaging portion 22 is securely attached to the first mounted component 1, maintaining a secure first mounted component engagement state. This prevents accidental rotation of the clamp 21 during installation of the second mounted component 4, facilitating easy installation of the second mounted component 4.

[0083] <Second Mounted Component Temporarily Retained State>

[0084] like Figures 19-20 As shown, the second engaging portion 23 is inserted into the second mounting hole 5 of the second mounted component 4, thereby temporarily retaining the second mounted component. At this time, when the head 38 of the pin member 37 passes through the second mounting hole 5, the edge of the second mounting hole 5 is guided along the inclined surface 39 of the head 38. This facilitates installation of the second mounted component 4. In this temporary retaining state, the arm 34 of the eyelet member 24 is positioned on the upper surface, opposite the first mounted component 1, of the second mounted component 4. The engaging protrusion 36 and the restricting protrusion 35 of the arm 34 protrude downward from the upper surface of the second mounted component 4. The engaging protrusion 36 is positioned within the square hole 7 of the second mounting hole 5, near the base of the guide portion 8. The restricting protrusion 35 is positioned above the square hole 7 of the second mounting hole 5.

[0085] like Figures 21-23 As shown, in the first mounted component engagement state (expanded diameter state), the positioning protrusion 42 passes through the slit 3 of the first mounted hole portion 2, and the groove portion 43 is arranged in the slit 3 (refer to Figure 18 ), so the clamp 21 can rotate forward with the first engaging portion 22 as the axis (in Figure 22 (The rotation in the figure is a clockwise rotation). The clamp 21 rotates forward, transitioning from the second mounted component temporarily held state to the second mounted component engaged state. Because the guide portion 8 of the second mounted component 4 is an inclined surface that rises in the direction of forward rotation, during the transition from the second mounted component temporarily held state to the second mounted component engaged state, when the clamp 21 rotates forward, the engaging protrusion 36 of the eyelet member 24 is guided along the guide portion 8 to the top of the guide portion 8. The engaging protrusion 36 is guided along the guide portion 8, facilitating forward rotation. In particular, the engaging protrusion 36 slides smoothly along the inclined surface, preventing excessive stress and facilitating smooth forward rotation. Consequently, installation of the second mounted component 4 is facilitated.

[0086] The fitting protrusion 36 of the metal eye member 24 is disposed in the square hole 7 of the second mounting hole 5, so even in the case where an external force is applied in the direction of reverse rotation (in the Figure 22 direction of left rotation in the present embodiment) assuming reverse rotation in the direction opposite to the normal rotation, the fitting protrusion 36 hits the rim of the square hole 7 (refer to Figure 19 ), so the accidental reverse rotation of the jig 21 is also restricted.

[0087] As described above, in the first mounted member engagement state and the second mounted member temporary holding state, the jig 21 is rotated in the normal direction, and the second engagement portion 23 is engaged with the second mounted member 4, so as to become the second mounted member engagement state. The second engagement portion 23 is engaged with the second mounted member 4 by rotation in a direction different from the insertion into the second mounting hole 5, so the second mounted member engagement state is firm compared to the case where engagement is made only by insertion.

[0088] <Second mounted member engagement state>

[0089] As shown in Figures 24-26 , when the jig 21 is rotated in the normal direction by substantially 90 degrees from the second mounted member temporary holding state, the fitting protrusion 36 of the metal eye member 24 is fitted with the fitting recess 9 of the guide portion 8 at the top of the guide portion 8 of the second mounted member 4. Thus, the second mounted member engagement state is firm. When the jig 21 is rotated in the normal direction, the step portion 44 of the boundary between the groove portion 43 and the positioning protrusion 42 is offset from the slit 3 of the first mounting hole 2. In this state, assuming that the jig 21 is pulled up, the step portion 44 is caught in the first mounted member 1 (refer to Figure 26 ). Thus, the jig 21 is prevented from falling off from the first mounted member 1.

[0090] There is a rotation restricting portion 10 on the circular orbit of the arm portion 34 when the jig 21 is rotated in the normal direction (refer to Figure 25 ). Thus, in the second mounted member engagement state, even in the case where an external force is further applied in the direction in which the jig 21 is rotated in the normal direction, since the restricting protrusion 35 and the fitting protrusion 36 hit the rotation restricting portion 10, the accidental rotation in the normal direction of the jig 21 is restricted.

[0091] Further, in other embodiments of the present application, in the pin member, the front and rear guide protrusions are positioning protrusions.

[0092] In other embodiments, in the pin member, all of the front, rear, left, and right guide protrusions are positioning protrusions.

[0093] In other embodiments, in the pin member, any one of the front, rear, left, and right guide protrusions is a positioning protrusion.

[0094] In other embodiments, the inclined surface portion has a single surface or three or more surfaces. The inclined surface portion is, for example, a conical shape or a polygonal shape such as a triangular pyramid.

[0095] In other embodiments, the head portion does not have an inclined surface portion in the pin member.

[0096] In other embodiments, the number of arm portions in the metal eye member is arbitrary.

[0097] In other embodiments, in the metal eye member, a restricting protrusion is formed in the right arm portion and a fitting protrusion is formed in the left arm portion.

[0098] In other embodiments, in the metal eye member, the arm portions protrude to the front and rear outer sides.

[0099] In other embodiments, in the metal eye member, a fitting protrusion is formed in both arm portions.

[0100] In other embodiments, in the metal eye member, the shape of the fitting protrusion is arbitrary, for example, a semicircular cross section (so-called semi-cylindrical type) or the like. In this case, the fitting recess portion of the second mounted member also has a shape that imitates the shape of the fitting protrusion.

[0101] In other embodiments, the metal eye member does not have a fitting protrusion and the second mounted member does not have a fitting recess portion. In this case, the arm portions of the metal eye member come into contact with and slide on the second mounted member, and the arm portions are engaged with the second mounted member.

[0102] In other embodiments, the first mounted member has a rotation restricting portion. In this case, the rotation restricting portion is located on a circular track of the body flange at the time of rotation of the jig, and the body flange hits against the rotation restricting portion, whereby the accidental forward rotation or reverse rotation of the jig is restricted.

[0103] In other embodiments, when the jig is reversed, the restricting protrusion and / or the fitting protrusion of the arm portion hits against the rotation restricting portion, whereby the accidental reverse rotation of the jig is restricted.

[0104] In other embodiments, the first mounted member and the second mounted member have a rotation restricting portion.

[0105] In other embodiments, the second mounted member does not have a rotation restricting portion.

[0106] In other embodiments, the guide portion of the second mounted member is not an inclined surface.

[0107] In other embodiments, the second mounted member does not have a guide portion.

[0108] The embodiments of the present application are described in detail above, but the present application is not limited to the above-described embodiments. Furthermore, the present application can be modified in various ways without departing from the matters described in the scope of claims.

Claims

1. A fastening structure, wherein a second mounted component is mounted to a first mounted component in an engaged state and a second mounted component is engaged state, wherein the first mounted component engaged state is a state in which the fastening structure is inserted into a first mounted hole formed in the first mounted component and engaged with the first mounted component, and the second mounted component engaged state is a state in which the fastening structure is inserted into a second mounted hole formed in the second mounted component and engaged with the second mounted component, wherein the fastening structure is characterized in that: Having a metal eyelet part and a pin part pre-connected to each other, The metal eyelet component has: a main body portion having an insertion hole formed therein and mounted on the first mounted component; a plurality of legs extending from around the insertion hole and inserted into the first mounted hole portion; and an arm portion formed on a side opposite to the leg portion relative to the main body portion and inserted into the second mounting hole portion, The pin member has a shaft portion inserted into the insertion hole, The first engaging portion composed of the leg portion and the shaft portion is inserted into the first mounted hole portion in a non-expanded state capable of being inserted into the first mounted hole portion, and the shaft portion is pressed relative to the main body portion to enter an expanded state in which the leg portion is expanded, thereby achieving an engaged state with the first mounted component.

2. The fastening structure according to claim 1, wherein: The shaft portion includes a positioning protrusion that protrudes toward the outside of the leg portion in the non-expanded state.

3. The fastening structure according to claim 2, characterized in that: In the non-expanded state, the positioning protrusion is continuous from the front end of the leg portion to the main body portion. A groove portion is formed at one end of the positioning protrusion on the main body side so as not to protrude outward from the leg portion in the expanded diameter state.

4. The fastening structure according to any one of claims 1 to 3, characterized in that: The pair of arms protrude outward from the main body in directions away from each other. In a state where the arm is inserted into the second mounted hole and the second mounted component is arranged on the opposite side of the first mounted component relative to the second mounted component and the first mounted component is engaged, The arm portion engages with the second mounted member by rotating forward about the first engaging portion, thereby achieving a second mounted member engaged state.

5. The fastening structure according to claim 4, characterized in that: The arm portion has a fitting protrusion that protrudes toward the second mounted member in a state where the second mounted member is temporarily held. In the engaged state of the second mounted member, the fitting protrusion is fitted with the second mounted member.

6. The fastening structure according to any one of claims 1 to 3, characterized in that: The pin member has: a head portion; and the shaft portion extending from the head portion, The head portion has an inclined surface portion that is inclined outward toward the shaft portion.

7. The fastening structure according to claim 4, wherein: The first mounted member and / or the second mounted member has a rotation restricting portion that restricts the forward rotation in the second mounted member engaged state or restricts a reverse rotation that is reverse to the forward rotation in the second mounted member temporarily held state.

8. The fastening structure according to claim 5, wherein The second mounted member has a guide portion that guides sliding of the arm portion with respect to the second mounted member in a process from the second mounted member temporarily held state to the second mounted member engaged state.

9. The fastening structure according to claim 8, wherein The guide portion is an inclined surface that rises from a rim of the second mounted hole portion in a direction of the forward rotation.

10. The fastening structure according to claim 8, wherein An engagement recess in which the engagement protrusion is engaged is formed in the guide portion.

11. The fastening structure according to claim 2 or 3, wherein A slit that engages the positioning protrusion is formed in a rim of the first mounted hole portion.

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