Cover assembly structure

Abstract

To suppress erroneous assembly of a cover.SOLUTION: The clip includes a shaft part 31 inserted into through-holes 11a and 21a of flat plate parts 11 and 21 of the cover and the housing which are overlapped with each other at the assembly completion position, a first locking part 32 which locks a peripheral edge part of the through-hole of the flat plate part of the cover, and a second locking part 42 which passes through the through-holes while being bent. And a second locking portion 33 configured to lock a peripheral edge portion of the through hole in the flat plate portion of the housing at a position where the second locking portion 33 comes out of the through hole in the flat plate portion of the housing, wherein the cover is provided with a locked portion 12 configured to lock a movement of the second locking portion in a direction opposite to an insertion direction of the second locking portion into the through hole to the cover locking portion at an assembly completion position, and the cover locking portion is provided with an abutting portion 43 configured to abut against the locked portion approaching in the insertion direction to prevent erroneous assembly of the cover.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a cover assembly structure. [Background technology]

[0002] Conventionally, a cover covers an opening in the internal space of a housing and is attached to the housing at that position. For example, Patent Document 1 listed below discloses a cover attachment structure in which the cover is fixed to the housing with screws. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-187573 Summary of the Invention [Problem to be solved by the invention]

[0004] Some cover assembly structures assemble the cover and the housing using a clip inserted into the through-holes of the respective flat plate portions. The clip has a shaft inserted into the through-holes of the overlapping flat plate portions, a first locking portion that locks each flat plate portion from the cover side, and a second locking portion that locks each flat plate portion from the housing side. In this cover assembly structure, the second locking portion is passed through the through-hole while being bent, thereby sandwiching the periphery of the through-hole in the flat plate portion of the cover and the periphery of the through-hole in the flat plate portion of the housing between the first locking portion and the second locking portion. Therefore, in consideration of the ease of installation, for example, the distance between the first locking portion and the second locking portion is wider than the total thickness of the overlapping flat plate portions, creating play corresponding to the difference. In some cover assembly structures, a cover locking portion is provided to prevent the cover from moving in the direction of removal in order to prevent rattling due to the play. In conventional cover assembly structures, even if the flat plate portions are not stacked in the correct position due to the cover getting caught on the cover locking portion, there may be play or the synthetic resin cover may become deformed, and the clip may be installed even if the cover is incorrectly assembled.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a cover assembly structure that can prevent incorrect assembly of the cover. [Means for solving the problem]

[0006] The present invention provides a cover, a housing to which the cover is attached, a clip for holding the cover and the housing at an assembly completion position, and a cover locking portion for locking the cover at the assembly completion position, wherein the clip has a shaft portion to be inserted into through holes in flat plate portions of the cover and the housing that are overlapped with each other at the assembly completion position, a first locking portion provided at one end of the shaft portion for locking a peripheral portion of the through hole in the flat plate portion of the cover, and a second locking portion provided at the other end of the shaft portion for locking the respective through holes while being bent. and a second locking portion that is inserted through the through hole in the flat plate portion of the housing and locks the peripheral edge of the through hole in the flat plate portion of the housing at the position where it exits the through hole in the flat plate portion of the housing, the cover is provided with an engaged portion that locks the movement of the second locking portion in the opposite direction to the insertion direction of the through hole into the cover engaging portion at the assembly completion position, and the cover locking portion is provided with an abutment portion that abuts the engaged portion approaching in the insertion direction, thereby preventing incorrect assembly of the cover. [Effects of the Invention]

[0007] In the cover assembly structure according to the present invention, even if the clip is inserted into the through-hole when the cover is improperly assembled, the second locking portion cannot be removed from the through-hole of the housing, and therefore the clip cannot be completely attached. Therefore, the cover assembly structure according to the present invention can prevent improper assembly of the cover. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing a cover assembly structure according to an embodiment, showing a state in which the cover is correctly assembled. [Figure 2] FIG. 2 is a diagram showing the cover assembly structure of the embodiment, showing the cover in an incorrectly assembled state. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cover assembly structure according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiment.

[0010] [Embodiment] One embodiment of a cover assembly structure according to the present invention will be described with reference to FIGS.

[0011] 1 and 2, reference numeral 1 indicates a cover assembly structure of this embodiment. This cover assembly structure 1 includes a cover 10, a housing 20 to which the cover 10 is attached, and a clip 30 that holds the cover 10 and the housing 20 in the assembly completion position. This cover assembly structure 1 also includes a cover locking portion 41 that locks the cover 10 in the assembly completion position.

[0012] The cover 10 is made of a synthetic resin material. The cover 10 has a flat plate portion 11 at a position where it is held relative to the housing 20 (FIGS. 1 and 2). The flat plate portion 11 has a through hole 11a formed therein, through which the clip 30 is inserted.

[0013] The housing 20 is molded from a synthetic resin material. Although not shown, the housing 20 has an internal space for accommodating an object, and the opening of this internal space is closed by the cover 10. The housing 20 is provided with a flat plate portion 21 at a position where it is held relative to the cover 10 (FIGS. 1 and 2). The flat plate portion 21 is formed with a through-hole 21a through which the clip 30 is inserted.

[0014] When the cover 10 and the housing 20 are fully assembled, their flat plate portions 11, 21 are overlapped and the clips 30 are inserted into the coaxially arranged through holes 11a, 21a, whereby the cover 10 and the housing 20 are held together by the clips 30 (FIGS. 1 and 2). The clip 30 shown here is made of synthetic resin material.

[0015] The clip 30 has a shaft portion 31 that is inserted into the through holes 11 a, 21 a of the flat plate portions 11, 21 of the cover 10 and the housing 20 that are stacked together in the assembled position, a first locking portion 32 that locks the flat plate portions 11, 21 from the cover 10 side, and a second locking portion 33 that locks the flat plate portions 11, 21 from the housing 20 side ( FIGS. 1 and 2 ). The first locking portion 32 is provided on one end of the shaft portion 31 and locks the peripheral portion of the through hole 11 a in the flat plate portion 11 of the cover 10. The second locking portion 33 is provided on the other end of the shaft portion 31 and is passed through the respective through holes 11 a, 21 a while being bent, and locks the peripheral portion of the through hole 21 a in the flat plate portion 21 of the housing 20 at a position where the shaft portion 31 exits the through hole 21 a in the flat plate portion 21 of the housing 20.

[0016] The clip 30 sandwiches the overlapping flat plate portions 11, 21 between the first locking portion 32 and the second locking portion 33 when the assembly is complete (FIGS. 1 and 2). The clip 30 is molded from a synthetic resin material, and in consideration of the large tolerance variations, etc., the distance between the first locking portion 32 and the second locking portion 33 is wider than the total thickness of the overlapping flat plate portions 11, 21 to allow for play corresponding to the difference in thickness, in order to facilitate and ensure installation. Therefore, rattle may occur between the cover 10 and the housing 20, and as a result, a load applied to the second locking portion 33 may apply an unnecessary overload to the clip 30. To prevent this, the cover assembly structure 1 is provided with the cover locking portion 41.

[0017] The cover locking portion 41 locks the cover 10 so that the cover 10 is not pulled away from the housing 20 in the axial direction of the shaft portion 31 of the clip 30 when the cover 10 is in the assembly completion position (FIG. 1). Therefore, the cover 10 is provided with a locked portion 12 that locks the cover locking portion 41 in the assembly completion position when the cover 10 moves in the opposite direction to the insertion direction of the second locking portion 33 into the through holes 11a, 21a (FIG. 1). The cover 10 has a protruding portion 13 that protrudes from the flat plate portion 11 in the opposite direction to the insertion direction, and the locked portion 12 is provided at the tip of the protruding portion 13 on the protruding direction side. The locked portion 12 shown here protrudes from the tip of the protruding portion 13 in a direction perpendicular to the insertion direction of the second locking portion 33.

[0018] Here, cover locking portion 41 may be provided on housing 20, or may be provided on an installation member that is installed so as not to displace relative to housing 20. For example, here, another housing 40 is installed and fixed to a member (not shown) on which housing 20 is installed and fixed, and this other housing 40 is an installation member that is installed so as not to displace relative to housing 20 (FIGS. 1 and 2). Therefore, here, cover locking portion 41 is provided on this other housing 40. Cover locking portion 41 shown here is disposed with a gap between it and box main body 42 of housing 40 in the axial direction of shaft portion 31 of clip 30, and locks locked portion 12 of cover 10 inserted into the gap with box main body 42 (FIG. 1).

[0019] In this cover assembly structure 1, after the housing 20 and another housing 40 are installed and fixed to the same member, the cover 10 is installed on the housing 20 while the locked portion 12 is inserted into the gap between the box body 42 and the cover locking portion 41, and the respective through holes 11a, 21a are aligned coaxially to overlap the respective flat portions 11, 21. In this state, in the cover assembly structure 1, the clip 30 is inserted into the respective through holes 11a, 21a, and the respective flat portions 11, 21 are clamped between the first locking portion 32 and the second locking portion 33 of the clip 30 (FIG. 1).

[0020] On the other hand, if the flat plate portions 11, 21 of the cover 10 are overlapped without inserting the locked portion 12 into the gap between the box main body 42 and the cover locking portion 41, the locked portion 12 will get caught on the cover locking portion 41, resulting in an incorrect assembly (Fig. 2). In the cover assembly structure 1, a measure is taken in the cover locking portion 41 to prevent the attachment of the clip 30 from being completed in an incorrect assembly state of the cover 10. The cover locking portion 41 is provided with an abutment portion 43 that abuts the locked portion 12 approaching in the insertion direction into the through-holes 11a, 21a of the second locking portion 33, thereby preventing incorrect assembly of the cover 10 (Figs. 1 and 2). This abutting portion 43 is a protruding portion that protrudes from the cover locking portion 41 in the opposite direction to the insertion direction of the second locking portion 33, and abuts against the locked portion 12 before the second locking portion 33 comes out of the through holes 11a, 21a (FIG. 2). As a result, in this cover assembly structure 1, even if the clip 30 is inserted into the through holes 11a, 21a when the cover 10 is in an incorrectly assembled state, the second locking portion 33 cannot come out of the through hole 21a of the housing 20, and therefore the attachment of the clip 30 cannot be completed (FIG. 2). Therefore, this cover assembly structure 1 can prevent incorrect assembly of the cover 10. [Explanation of symbols]

[0021] 1 Cover assembly structure 10 Cover 11,21 Flat plate part 11a, 21a through hole 12 Locked part 20 Case 30 clips 31 Shaft 32 First locking portion 33 Second locking portion 40 Another housing (installation material) 41 Cover locking part 43 Contact part

Claims

1. Cover and a housing to which the cover is attached; a clip for holding the cover and the housing in an assembly completion position; a cover locking portion that locks the cover in the assembly completion position; Equipped with the clip has a shaft portion to be inserted into the through holes of the respective flat plate portions of the cover and the housing that are overlapped with each other at the assembly completion position, a first locking portion provided at one end of the shaft portion and locking a peripheral portion of the through hole in the flat plate portion of the cover, and a second locking portion provided at the other end of the shaft portion and passed through the respective through holes while being bent, and locking a peripheral portion of the through hole in the flat plate portion of the housing at a position where the clip has exited the through hole in the flat plate portion of the housing; the cover is provided with a locked portion that locks the movement of the second locking portion in a direction opposite to the insertion direction of the second locking portion into the through hole at the assembly completion position, The cover assembly structure is characterized in that the cover engaging portion is provided with an abutment portion that abuts the engaged portion approaching in the insertion direction, thereby preventing incorrect assembly of the cover.

2. The cover assembly structure according to claim 1 , wherein the abutting portion abuts against the locked portion before the second locking portion comes out of the through hole.

3. 3. The cover assembly structure according to claim 1, wherein the cover engaging portion is provided on the housing or on an installation member that is installed so as not to be displaced relative to the housing.

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