Attachment structure

Abstract

To provide an attachment structure which can prevent incorrect assembly of a clip member with a simple structure and maintain good assemblability.SOLUTION: An attachment structure 6 includes: an attached member 1 having a plate-like attached part 5; and a clip member 2 having one and another sandwiching pieces 13, 14 facing each other and a connection member 15 connecting the one and other sandwiching pieces 13, 14 and configured to sandwich the attached part 5 by the one and other sandwiching pieces 13, 14 from the terminal part 5a side. The one sandwiching piece 13 includes a warp part 18 which bends in a direction away from the other sandwiching piece 14 at an end at the opposite side of the connection part 15. In the attached part 5, on one of one major surface 20 and the other major surface 21 at the terminal part 5a side, structure parts 29, each of which allows the warp part 18 to get over the structure part 29 and prevents an end at the opposite side of the connection part 15 of the other sandwiching piece 14 from getting over the structure part 29, are formed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a mounting structure having a clip member that clamps a flat plate-shaped mounting target portion. [Background technology]

[0002] A structure has been known in which a clip nut, which is a clip member with a U-shaped cross section, is used to fasten a member to a mating member, such as a resin molded product, with a bolt. This structure is preferably used when fixing a member to a position where a nut cannot be provided on the mating member.

[0003] The portion of the member to be attached that is sandwiched by the clip nut is formed in a flat shape, and this portion to be attached is formed with a mounting hole portion into which the bolt is inserted and a rib for preventing the clip nut from rotating. Then, a mating member is placed on the clip nut sandwiching the seat portion, a bolt is inserted integrally from the mating member to the clip nut, and the bolt is screwed into a nut previously provided on the clip nut, whereby the member to be attached is fastened and fixed to the mating member (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2011-157024 A (pages 4-6, Figures 1-5) Summary of the Invention [Problem to be solved by the invention]

[0005] The part to which the clip nut is attached has flat surfaces on both sides, so there is a risk that the worker may confuse the front and back when attaching the clip nut. If such a mistake occurs, there is a concern that the expected attachment strength and precision will not be obtained.

[0006] The present invention has been made in consideration of the above points, and has an object to provide a mounting structure that is simple in structure and can prevent incorrect assembly of clip members while maintaining good assembly performance. [Means for solving the problem]

[0007] The mounting structure described in claim 1 comprises an attachment member having a flat attachment portion, and a clip member having one and another clamping pieces facing each other and a connecting portion connecting the one and other clamping pieces, the clip member clamping the attachment portion from its terminal side with the one and other clamping pieces, the one clamping piece having a warped portion at its end opposite the connecting portion which bends in a direction away from the other clamping piece, and the attachment portion has a structural portion formed on either one of the one main surface or the other main surface on the terminal side which allows the warped portion to go over and prevents the end of the other clamping piece opposite the connecting portion from going over it.

[0008] The mounting structure described in claim 2 is the mounting structure described in claim 1, in which the clip member is such that one of the one and the other clamping pieces is inclined relative to the other so that the distance between the one and the other clamping pieces gradually becomes wider from the warped portion toward the connecting portion. Effect of the Invention

[0009] According to the mounting structure described in claim 1, when one clamping piece having a warped portion is located on either one of the one main surface on which the structural portion is formed or the other main surface, the clip member can be attached to the mounting portion, whereas when one clamping piece is located on the other of the one main surface and the other main surface, the mounting of the clip member to the mounting portion is prevented by the structural portion. Therefore, the simple structure can prevent incorrect assembly of the clip member, and the clip member can be attached to the mounting portion in the correct condition, making it possible to maintain good assembly performance of the mounting portion relative to the mating member.

[0010] According to the mounting structure described in claim 2, in addition to the effects of the mounting structure described in claim 1, when the clip member is attached to the attachment portion, the structural part securely catches on either one of the first or second clamping pieces when the clip member attempts to come off from the attachment portion, thereby preventing the clip member from coming off from the attachment portion, and since the structural part is less likely to come into contact with the first or second clamping pieces when the clip member is attached to the attachment portion, the occurrence of rattling and the like that may result from the contact can be prevented. [Brief description of the drawings]

[0011] [Figure 1] 1 is a perspective view showing a mounting structure according to a first embodiment of the present invention; [Diagram 2] 2 is an end view corresponding to a position II in FIG. 1, showing the mounting structure in a mounted state. [Diagram 3] 1A is an end view corresponding to position II in FIG. 1, showing the state in which the clip member of the mounting structure is attached to the mounting portion in the normal position, and FIG. 1B is an end view corresponding to position II in FIG. 1, showing the state in which the clip member of the mounting structure is attached to the mounting portion in the reverse position. [Figure 4] FIG. 11 is an end view showing a clip member of a mounting structure according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] A first embodiment of the present invention will now be described with reference to the drawings.

[0013] 1 and 2, 1 denotes a member to which the attachment is to be attached. The member to which the attachment is to be attached 1 is, for example, a resin molded product, and in this embodiment, it is a resin molded product for vehicles such as automobiles. In the illustrated example, the member to which the attachment is to be attached 1 will be described taking as an example an undercover, which is a protective member. That is, the member to which the attachment is to be attached 1 in this embodiment is a vehicle part, which is attached to, for example, the lower part of the body (engine room, etc.) of an automobile or the like, and protects other parts of the body from mud, pebbles, etc., kicked up by the tires.

[0014] The workpiece 1 is attached to a counterpart member by a fastening member via a clip member 2. For example, in this embodiment where the workpiece 1 is an undercover, the counterpart member is a bumper or the like located at the front or rear of the vehicle. The workpiece 1 has one or more workpiece portions 5, to which the clip member 2 is attached, set at the terminal portion of a main body portion 4 that extends in a plane. The workpiece portions 5 and the clip member 2 form an attachment structure 6 that attaches the workpiece 1 to the counterpart member.

[0015] Here, the clip member 2 is also called a clip nut or a J nut, and is integrally provided with a clip member main body 10 curved into a U-shape made of a plate material such as metal, and a nut portion 11 which is a fastening receiving portion that receives a fastening member.

[0016] The clip member main body 10 is formed into a U-shape by connecting a plate-like first clamping piece 13 and another clamping piece 14, which are arranged opposite each other, via a curved connecting portion 15. That is, the clip member main body 10 has an opening 16 at one end between the first and other clamping pieces 13, 14, and at the other end the space between the first and other clamping pieces 13, 14 is closed by the connecting portion 15.

[0017] The nut portion 11 is formed on one of the clamping pieces 13 so as to protrude on the side opposite the other clamping piece 14. The one of the clamping pieces 13 is also formed with a warped portion (sled portion) 18 at the end opposite the connecting portion 15, i.e., at the tip portion which is the end portion on the opening 16 side. The warped portion 18 is formed by bending in a direction away from the other clamping piece 14. The warped portion 18 is located closer to the tip portion of the one of the clamping pieces 13 than the nut portion 11, and forms the tip portion of the one of the clamping pieces 13.

[0018] A working hole into which a fastening member is inserted is formed penetrating in the thickness direction in the other clamping piece 14. The working hole is located at a position facing the nut portion 11 formed integrally with one clamping piece 13.

[0019] In this embodiment, one of the first clamping piece 13 and the other clamping piece 14 is inclined relative to the other so that the distance therebetween gradually increases from the tip end, which is the end on the opening 16 side, i.e., from the warped portion 18 side, toward the connecting portion 15. In this embodiment, the first clamping piece 13 is inclined relative to the other clamping piece 14 so as to gradually approach the warped portion 18.

[0020] The nut portion 11 is formed in a cylindrical shape. Inside the nut portion 11, a female screw portion is formed into which a fastening member is screwed.

[0021] The fastening members are bolts, screws, etc. The fastening members are inserted through the mating member, the working hole of the clip member 2, and the attached portion 5 of the attached member 1, and the tip portion is screwed into the nut portion 11 of the clip member 2, thereby integrally fastening and fixing the attached member 1 to the mating member.

[0022] The attachment portion 5 of the attachment member 1 is formed in a flat plate shape. The attachment portion 5 serves as a seat portion that is clamped by the clip member 2. For example, the thickness T of the attachment portion 5 is set to be equal to or less than the minimum gap (gap at the position of the warped portion 18) between one clamping piece 13 and the other clamping piece 14 of the clip member 2. When the clip member 2 is correctly attached to the attachment portion 5 (normal position), the one clamping piece 13 of the clip member 2 is overlapped with the one main surface 20 of the attachment portion 5, and the other clamping piece 14 of the clip member 2 is overlapped with the other main surface 21 of the attachment portion 5.

[0023] The attachment portion 5 is located at the outer edge, which is the terminal portion, of the main body 4. In the illustrated example, the attachment portion 5 is located adjacent to a notch 22 formed by cutting out the outer edge, which is the terminal portion, of the main body 4 of the attachment member 1. The clip member 2 is attached to the attachment portion 5 from the outside toward the inside of the main body 4. In this embodiment, the thickness direction of the attachment portion 5 is the up-down direction. In the figure, the direction of the arrow U is the upward direction, and the direction of the arrow D is the downward direction.

[0024] The attachment portion 5 is formed with an attachment hole 23. The attachment hole 23 is formed penetrating the attachment portion 5 in the thickness direction. The tip side of the fastening member is inserted into the attachment hole 23 together with the work hole of the clip member 2 and the insertion hole of the mating member. That is, the attachment hole 23 is shaped larger than the tip side of the fastening member. In this embodiment, the attachment hole 23 is elongated in a direction intersecting or perpendicular to the thickness direction and the attachment direction of the clip member 2 to the attachment portion 5. For clarity of explanation, hereinafter, the attachment direction of the clip member 2 to the attachment portion 5 is the front-rear direction, and the direction intersecting or perpendicular to the thickness direction and the attachment direction of the clip member 2 to the attachment portion 5 is the left-right direction. In the drawings, the direction of the arrow FR is the front direction, the direction of the arrow RR is the rear direction, and the left-right direction is the left direction, and the direction of the arrow R is the right direction, based on the state viewed from the front side. In the following, the up, down, left, right, front and rear directions are set merely for convenience with respect to the mounting portion 5 shown in the figure, and these directions do not necessarily coincide with the directions of the mounting member 1 mounted on the vehicle body.

[0025] In addition, a restricting portion 25 is formed on the attached portion 5. The restricting portion 25 positions the clip member 2 relative to the attached portion 5. The restricting portion 25 also prevents the clip member 2 from rotating relative to the attached portion 5 when the fastening member is fastened. The restricting portion 25 restricts the position of the clip member 2 in the up-down and left-right directions. The restricting portions 25 are formed at least at positions opposite each other on the left and right sides with respect to the mounting hole portion 23. In this embodiment, the restricting portions 25 are formed on both the left and right sides of the mounting hole portion 23. The restricting portions 25 are located apart from the mounting hole portion 23 in the left-right direction.

[0026] Moreover, the restricting portion 25 is provided so as to protrude in the vertical direction from the attached portion 5. In this embodiment, the restricting portion 25 is provided so as to protrude upward from the attached portion 5. That is, the restricting portion 25 is formed on one main surface 20 of the attached portion 5.

[0027] In this embodiment, the regulating portion 25 is formed in a longitudinal linear rib shape along the front-rear direction. The regulating portion 25 extends linearly rearward from a position rearwardly spaced from the terminal portion 5a (notch portion 22) of the attachment portion 5. A wall portion 27 for positioning the clip member 2 is formed between the rear ends of both the regulating portions 25. The wall portion 27 protrudes in the vertical direction from one main surface 20 of the attachment portion 5. The wall portion 27 is inclined upward toward the rear side on the attachment portion 5 side, i.e., the front side, and is positioned at a position where the warped portion 18 of the clip member 2 attached to the attachment portion 5 abuts. In this embodiment, the height of the wall portion 27 from one main surface 20 is set higher than that of the regulating portion 25.

[0028] At the terminal portion 5a of the mounting portion 5, an inclined portion 5b is formed on the other main surface 21 side, i.e., the main surface opposite the regulating portion 25, which is inclined upward so that the thickness of the mounting portion 5 gradually becomes thinner toward the front side.

[0029] A structural portion 29 is formed on the front end of the restricting portion 25. The structural portion 29 is formed on either the one main surface 20 or the other main surface 21 on the terminal portion 5a side, i.e., the front side, of the attached portion 5, and is formed on the one main surface 20 in this embodiment. The structural portion 29 is formed so as to allow the warped portion 18 of the clip member 2 to get over, but to prevent the end portion of the other clamping piece 14 opposite the connecting portion 15, i.e., the rear end portion, from getting over.

[0030] The structural portion 29 is formed on either one of the main surface 20 and the other main surface 21 on the terminal portion 5a side of the mounting portion 5. In this embodiment, the structural portion 29 is a convex portion that protrudes upward from the one main surface 20.

[0031] The structural portion 29 is set to have a lower height from the one main surface 20 than the restricting portion 25. A dimension H obtained by adding the thickness T of the general portion (position excluding the inclined portion 5b) of the attached portion 5 and the height of the structural portion 29 is set to be larger than the minimum gap (gap at the position of the warped portion 18) between the one clamping piece 13 and the other clamping piece 14 of the clip member 2 and smaller than the maximum gap G (gap at the position of the connecting portion 15).

[0032] Moreover, the structural portion 29 is located between the terminal portion 5a of the mounting portion 5 and the mounting hole portion 23 in the front-rear direction. The structural portion 29 is formed in a rectangular rib shape along the terminal portion 5a of the mounting portion 5, that is, along the left-right direction. In this embodiment, a pair of structural portions 29 are set on the left and right. One end of each of these structural portions 29, 29 is connected to the restricting portions 25, 25, and the other end portions face each other and are separated from each other in the left-right direction, and the other end portions overlap the mounting hole portion 23 in the left-right direction when viewed from the front-rear direction. These structural portions 29, 29 are set to have the same or approximately the same height as each other.

[0033] When attaching the workpiece 1 to a mating member, the clip member 2 is attached to the attachment portion 5 of the workpiece 1, and the workpiece 1 together with the attached clip member 2 is overlapped and positioned on the mating member. After that, a fastening member is inserted through the mating member, the work hole in the clip member 2, and the mounting hole 23 in the attachment portion 5 of the workpiece 1, and the tip of the fastening member is screwed into the nut portion 11 of the clip member 2, thereby fastening and fixing the workpiece 1 to the mating member as a single unit.

[0034] When clip member 2 is attached to attachment portion 5, as shown in Figure 3 (a), when clip member 2 is in the correct position with one clamping piece 13 on the upper side, which is the side of one main surface 20, and the other clamping piece 14 on the lower side, which is the side of the other main surface 21, when terminal portion 5a of attachment portion 5 is inserted into opening 16 of clip member 2 and clip member 2 is pushed into attachment portion 5 from terminal portion 5a, warped portion 18 at the tip of one clamping piece 13 hits structural portion 29, and as clip member 2 is pushed in, one clamping piece 13 is pushed up by structural portion 29, opening up the gap between one clamping piece 13 and the other clamping piece 14 of clip member 2, and one clamping piece 13 (warped portion 18) overcomes structural portion 29, allowing clip member 2 to be smoothly attached to attachment portion 5.

[0035] At the position where the warped portion 18 has overcome the structural portion 29, the first clamping piece 13 is deformed to a position overlapping the first main surface 20 by the elasticity of the connecting portion 15. In the clip member 2 attached to the attached portion 5, as shown in FIG. 2, the first clamping piece 13 overlaps the first main surface 20 and the other clamping piece 14 overlaps the other main surface 21 between the restricting portions 25, 25, and the attached portion 5 is sandwiched between the first and other clamping pieces 13, 14 from above and below, and the warped portion 18 overlaps the wall portion 27. In addition, the structural portion 29 is located near the connecting portion 15 and does not directly contact the first clamping piece 13, and if the clip member 2 tries to slip forward relative to the attached portion 5, the structural portion 29 gets caught on the first clamping piece 13 and acts as a return, so to speak, to make it difficult for the clip member 2 to come off the attached portion 5.

[0036] In contrast, as shown in Figure 3(b), when the clip member 2 is in the inverted position with one clamping piece 13 on the lower side, which is the other main surface 21 side, and the other clamping piece 14 on the upper side, which is the one main surface 20 side, when the terminal portion 5a of the attached portion 5 is inserted into the opening 16 of the clip member 2 and the clip member 2 is pushed into the attached portion 5 from the terminal portion 5a, the warped portion 18 at the tip of the one clamping piece 13 is guided by the inclination of the inclined portion 5b set on the other main surface 21 at the terminal portion 5a of the attached portion 5 and moves rearward and downward, so that the tip surface of the other clamping piece 14 abuts against the base of the structural portion 29 from the front, making it difficult to get over the structural portion 29.

[0037] In this way, according to the first embodiment, a warped portion 18 that bends in a direction away from the other clamping piece 14 is formed at the end of one clamping piece 13 opposite the connecting portion 15, and a structural portion 29 is formed on either one of the main surface 20 or the other main surface 21 on the terminal portion 5a side of the attached portion 5, which allows the warped portion 18 to go over and prevents the end of the other clamping piece 14 opposite the connecting portion 15 from going over it.As a result, when the one clamping piece 13 having the warped portion 18 is positioned on either one of the main surface 20 and the other main surface 21 on which the structural portion 29 is formed, in this embodiment on the one main surface 20 side (normal position), the clip member 2 can be attached to the attached portion 5, whereas when the one clamping piece 13 is positioned on the other of the one main surface 20 and the other main surface 21, in this embodiment on the other main surface 21 side (reverse position), the attachment of the clip member 2 to the attached portion 5 is prevented by the structural portion 29. Therefore, the simple structure prevents incorrect assembly (reverse assembly) of the clip member 2, and the clip member 2 can be attached to the attachment portion 5 in the correct state, making it possible to maintain good assembly performance of the attachment member 1 relative to the mating member.

[0038] In addition, between the one main surface 20 and the other main surface 21 on which the structural portion 29 is not formed (the other main surface 21 in this embodiment), an inclined portion 5b is formed at the position of the terminal portion 5a, which guides the clip member 2 downward when the inverted clip member 2 is pushed toward the attachment portion 5. This makes it easier for the end face of the other clamping piece 14 of the inverted clip member 2 to come into contact with the structural portion 29, more reliably preventing misassembly of the clip member 2.

[0039] Furthermore, one of the one and the other clamping pieces 13, 14 of the clip member 2 is inclined relative to the other so that the distance between them gradually widens from the warped portion 18 toward the connecting portion 15. Therefore, when the clip member 2 is attached to the attachment portion 5, the structural portion 29 catches on one of the one and the other clamping pieces 13, 14, or in this embodiment, the one clamping piece 13, when the clip member 2 attempts to come off from the attachment portion 5, thereby preventing the clip member 2 from coming off from the attachment portion 5.

[0040] Furthermore, since the structural parts 29, 29 have the same or approximately the same height, rattling is unlikely to occur even if the structural parts 29, 29 abut against one of the clamping pieces 13 of the clip member 2 attached to the attachment portion 5 in the correct position. However, in this embodiment, since the one clamping piece 13 of the clip member 2 attached to the attachment portion 5 in the correct position is spaced upward relative to the structural part 29, the one clamping piece 13 and the structural part 29 are unlikely to abut, and rattling that may occur due to this abutment can be more reliably suppressed.

[0041] In the first embodiment, the clip member 2 has an example in which one of the first and second clamping pieces 13, 14 is inclined so that it gradually becomes wider relative to the other from the warped portion 18 toward the connecting portion 15. However, this is not limited to this, and even if the one and second clamping pieces 13, 14 are parallel or approximately parallel to each other, as in the second embodiment shown in Figure 4, it is possible to prevent incorrect assembly of the clip member 2 with a simple structure and maintain good assembly performance, and similar effects to those of the first embodiment can be achieved.

[0042] Furthermore, in each embodiment, the mounting member 1 is not limited to an undercover, but can be used as a protective member for a vehicle such as a fender protector, or any vehicle part that is fastened to a mating member that constitutes part of the vehicle body using the clip member 2 and a fastening member.

[0043] Furthermore, the attached member 1 is not limited to being used for a vehicle, but can be used as any part that is fastened and fixed to a mating member using the clip member 2 and a fastening member. [Industrial Applicability]

[0044] The present invention can be suitably used as a vehicle mounting structure for mounting a resin molded product such as an undercover of a vehicle. [Explanation of symbols]

[0045] 1. Mounting material 2 Clip member 5 Mounting part 5a Terminal part 6 Mounting structure 13 First clamp piece 14 Other clamping pieces 15 Connecting part 18 Warped part 20 First Main Surface 21 Other main surfaces 29 Structural section

Claims

1. A mounting member having a flat mounting portion; a clip member having one and another clamping pieces facing each other and a connecting portion connecting the one and another clamping pieces, the one and another clamping pieces clamping the attached portion from its terminal portion side, the one clamping piece has a warped portion at an end portion opposite the connecting portion, the warped portion being bent in a direction away from the other clamping piece, The mounting portion has a structure formed on one of the main surfaces on the terminal portion side, the structure allowing the warped portion to pass over the mounting portion and preventing the end portion of the other clamping piece opposite the connecting portion from passing over the mounting portion. A mounting structure characterized by:

2. In the clip member, one of the first and second clamping pieces is inclined with respect to the other so that the distance between the first and second clamping pieces gradually increases from the warped portion toward the connecting portion.

2. The mounting structure according to claim 1.

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