JP2013021159A - Cover connection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cover connection structure securely connecting a case with a cover while reducing looseness therebetween.SOLUTION: A cover connection structure 31 for connecting a case 10 having a plate-shaped case body and a wall member 12 with a cover 20 having a cover body covering an opening of the case and wall plates 22 erected from abutting surfaces of the cover body, and arranged so that the wall plates face an outer peripheral surface 12a of the wall member when the cover body is attached to the wall member, comprises: a pressing member 40 contacting with intermediate portions 22a of the wall plates in a reference direction Y to deform the intermediate portions of the wall plates toward the outer peripheral surface of the wall member; and a pair of deformation portions 23 for deforming both sides of the intermediate portions of the wall plates in the reference direction Y toward a direction away from the outer peripheral surface of the wall member. In this case, a direction in which the wall plates are parallel to the outer peripheral surface of the opposed wall member and the abutting surfaces when the cover is attached to the case is defined as the reference direction Y.

Description

  The present invention relates to a cover connection structure for attaching a cover to a case.

Conventionally, in order to protect an electronic component from external force, water, dust, and the like, a storage case in which a storage space for storing the electronic component is formed is used.
An example of this type of storage case is described in Patent Document 1. The housing case includes a lower case that covers the lower part of the electronic component, and an upper case that engages with the lower case and covers the upper part of the electronic component. When the upper case and the lower case are moved in the closing direction with the lower back portion of the upper case and the upper upper portion of the lower case joined, the square holes provided in one case in a state where both cases are closed The claws provided in the other case are fitted together, and both cases are fixed to each other.
However, in this housing case, there is a possibility that both cases will rattle due to deviations from the set values (dimension values targeted at the time of design) between the square holes and the claws, resulting in abnormal noise (chattering noise).

As a structure that suppresses the rattling, there is a housing case described in Patent Document 2. The housing case includes a case and a cover attached to the case. An inner wall portion and an outer wall portion are formed around the opening end of the cover. The outer wall portion is formed with a fitting opening which is a through hole. On the other hand, a plurality of guide ribs protruding from the inner surface are provided on the inner surface of the wall portion of the case. The guide rib is provided with a tapered portion in which the protruding height is reduced toward the opening end. On the outer surface of the wall portion, a claw portion that engages with the aforementioned fitting port is formed.
When the wall portion of the case is inserted between the inner wall portion and the outer wall portion of the cover, the claw portion is engaged with the fitting port, and the inner wall portion is bent in a direction away from the outer wall portion by the taper portion. The backlash of the cover against the case is suppressed by the elastic force that the inner wall receives from the tapered portion.

JP-A-5-12844 JP 2001-339174 A

  However, in the housing case of Patent Document 2, guide ribs are provided on the inner surface of the wall portion of the case, and the inner wall portion is disposed in the case in a curved state when the cover is attached. For this reason, there is a possibility that the accommodation space in the accommodation case becomes small or it becomes difficult to accommodate the electronic component in the accommodation case.

  The present invention has been made in view of such problems, and has a cover connection structure that securely connects the case and the cover while securing the accommodation space and suppressing the backlash between the case and the cover. The purpose is to provide.

In order to solve the above problems, the present invention proposes the following means.
The cover connection structure of the present invention includes a plate-like case main body, a case having a wall member standing from an edge of the case main body, a cover main body covering the opening of the case, and an edge of the wall member. A wall plate standing from an abutment surface of the cover main body that abuts, and the wall plate is disposed so as to face an outer peripheral surface of the wall member when the cover main body is attached to the wall member; And a cover connecting structure for connecting the cover and the case with the cover attached to the case in a direction parallel to the outer peripheral surface and the contact surface of the wall member facing the wall plate. A pressing member that comes into contact with an intermediate portion of the wall plate in the reference direction and deforms the intermediate portion of the wall plate toward an outer peripheral surface of the wall member when the reference direction is set; Part of the standard A pair of deforming portions that deform both sides of the wall member in a direction away from the outer peripheral surface of the wall member, the pressing member is connected to the case, and the pair of deforming portions are provided on the wall plate. It is characterized by being.

According to this invention, when the cover is attached to the case, the intermediate portion in the reference direction is deformed toward the wall member by the pair of deforming portions provided on the wall plate and the pressing member. The both sides of the intermediate portion in the reference direction are deformed toward the direction away from the wall member. That is, the wall plate is deformed into an arcuate shape in which the wall member side is convex. Then, the intermediate portion of the wall plate is pressed against the pressing member by the elastic force of the wall plate generated at this time, and both sides of the intermediate portion in the reference direction are pressed against the wall member. For example, when the deformed portion is formed smaller than the set value, the degree of deformation of the wall plate that is deformed into an arcuate shape is reduced. However, even in this case, the intermediate portion of the wall plate is pressed against the pressing member, and the state where both sides of the intermediate portion in the reference direction are pressed against the wall member is maintained. Thus, the backlash between the case and the cover in the direction in which the wall plate and the wall member face each other can be suppressed, and the case and the cover can be reliably connected.
Since the connection structure is provided outside the storage space formed by the case and the cover, the storage capacity of the storage space can be ensured.

Further, in the connection structure of the cover, a recess is formed on the outer peripheral surface of the wall member, the deforming portion is formed so as to protrude from the wall plate, and the deforming portion is engaged with the recess. preferable.
According to this invention, it can suppress that the cover attached to the case remove | deviates from a case.

Moreover, in the connection structure of the cover, the deforming portion is arranged such that the wall plate moves toward the standing direction at an end portion in the standing direction where the wall plate stands from the contact surface of the cover body. It is more preferable to have a guide surface formed to approach
According to the present invention, when the guide surface comes into contact with the wall member when the cover is attached to the case, the guide surface is formed as described above, so that the wall plate moves outward as the cover body approaches the wall member. Deforms to open. For this reason, it is easy to attach the cover to the case.

In the cover connection structure, the pressing member has a pressing side deformation portion formed in a curved shape that is convex toward the outer peripheral surface of the wall member, and the cover is attached to the case. In some cases, it is more preferable that the pressing side deforming portion contacts the intermediate portion of the wall plate.
According to this invention, the position where the wall plate and the pressing side deformation portion come into contact with each other by making the radius of curvature of the surface of the pressing side deformation portion side of the wall plate deformed into an arc shape larger than the curvature radius of the pressing side deformation portion. Even if it is displaced, the pressing side deformation portion can be brought into contact with the wall plate at one place.

In this case, the wall plate is supported at three locations by the pressing member and the pair of deforming portions so as to be staggered along the reference direction. When the wall plate is configured to be supported at four or more locations, for example, when the presser member is formed smaller than the initial set value, the cover is attached to the case by the placement of the presser member and the deformed portion. Sometimes the pressing member and the deformed part are slightly separated from the wall plate. If there is such a portion, there is a possibility that an abnormal noise is generated between the slightly separated portion and the wall plate.
By supporting the wall plates at three locations so as to be staggered, it is possible to prevent abnormal noise from being generated from the wall plates.

In the cover connection structure, the pressing member is more preferably a terminal block.
According to this invention, the member which deform | transforms a wall board can be shared by the terminal block connected to a case.

  Further, another cover connection structure of the present invention includes a plate-like case body, a case having a wall member standing from an edge of the case body, a cover body covering the opening of the case, and the wall member A wall plate erected from the contact surface of the cover main body that contacts the edge of the cover body, and the wall plate faces the outer peripheral surface of the wall member when the cover main body is attached to the wall member The cover is connected to the cover, and the cover is connected to the case, and the cover is attached to the case, and is parallel to the outer peripheral surface and the contact surface of the wall member facing the wall plate. When the direction to become the reference direction, a deformation portion that deforms the intermediate portion of the wall plate in the reference direction toward a direction away from the outer peripheral surface of the wall member, and the intermediate portion of the wall plate Both sides of the reference direction A pressing member that contacts and deforms both sides of the intermediate portion in the reference direction toward the outer peripheral surface of the wall member, the pressing member is connected to the case, and the deforming portion is attached to the wall plate. It is characterized by being provided.

According to this invention, when the cover is attached to the case, the wall plate of the cover is moved toward the direction in which the intermediate portion in the reference direction is separated from the wall member by the deforming portion provided on the pressing member and the wall plate. Simultaneously with the deformation, both sides of the intermediate portion in the reference direction are respectively deformed toward the wall member.
As a result, the wall plate is deformed into an arcuate shape with the pressing member side convex, and the case and the cover are securely connected by suppressing backlash between the case and the cover in the direction in which the wall plate and the wall member face each other. Can do.

  According to the cover connection structure of the present invention, it is possible to securely connect the case and the cover while securing the accommodation space and suppressing backlash between the case and the cover.

It is the perspective view which fractured | ruptured some accommodation cases in which the connection structure of the cover of 1st Embodiment of this invention is used. It is sectional drawing of cutting line A1-A1 in FIG. It is sectional drawing of cutting line A2-A2 in FIG. It is sectional drawing of the plane which shows the principal part of the storage case typically. It is sectional drawing of the plane which shows the principal part of the storage case typically. It is sectional drawing of the principal part of the storage case in which the connection structure of the cover of the modification of embodiment of this invention is used. It is sectional drawing of the principal part of the storage case in which the connection structure of the cover of the modification of embodiment of this invention is used. FIG. 8A is a cross-sectional view of the deformed portion, and FIG. 8B is a perspective view of the deformed portion, according to the cover connection structure in the modified example of the embodiment of the present invention. It is sectional drawing of the principal part of the storage case in which the connection structure of the cover of the modification of embodiment of this invention is used. It is sectional drawing of the plane which shows typically the principal part of the storage case where the connection structure of the cover of 2nd Embodiment of this invention is used.

(First embodiment)
Hereinafter, an embodiment of a cover connection structure (hereinafter also referred to as “connection structure”) according to the present invention and a housing case in which the connection structure is used will be described with reference to FIGS. 1 to 9. As shown in FIG. 1, the storage case 1 includes a case 10 and a cover 20 that covers the opening of the case 10.

The case 10 includes a case main body 11 formed in a rectangular plate shape in plan view, and a wall member 12 erected from the entire periphery of the edge of the case main body 11.
A pair of connection pieces 13 are provided on the outer peripheral surface 12 a on the short side of the case body 11 in the wall member 12. The connection piece 13 is provided on the case body 11 side of the wall member 12.
Each connection piece 13 has a through hole 13a. The case 10 can be attached to another device or the like by inserting and fixing a screw member into the through hole 13a.
A terminal block 30 and a terminal block (pressing member) 40 are connected to the outer peripheral surface 12a of the wall member 12 by a screw member (not shown). The terminal block 30 and the terminal block 40 are arranged so as to sandwich the case 10 in the case longitudinal direction X, and each is electrically connected to the inside of the case 10.
An electronic device can be accommodated in the case 10, and the electric power guided from the terminal block 30 into the case 10 is subjected to a predetermined process by the electronic device and output from the terminal block 40 or the like.

  In the present embodiment, the case 10 is formed by casting aluminum. When manufacturing the case 10, as shown in FIG. 2, a mold separated into a lower mold and an upper mold is used on the short side of the wall member 12 with the mold separation surface L as a boundary surface. An angle θ1 formed between the outer peripheral surface 12a of the wall member 12 and the case main body 11 is set to be smaller than 90 ° in order to remove the upper mold, and the outer peripheral surface 12a is a tapered taper surface.

As shown in FIG. 3 and FIG. 4, the terminal block 40 has a terminal side deformation portion (pressing side deformation portion) 41.
The terminal-side deformation portion 41 is formed in a curved surface that is convex toward the outer peripheral surface 12a of the wall member 12 in plan view. The terminal-side deformable portion 41 is disposed so as to face the central portion of the wall member 12 in the case short direction (reference direction) Y. The gap S is formed between the terminal side deformable portion 41 and the outer peripheral surface 12a of the wall member 12. The radius of curvature of the terminal side deformable portion 41 is set to a predetermined value R1.
Although not shown, the terminal block 30 is formed in the same manner as the terminal block 40.

As shown in FIGS. 1 and 2, the cover 20 is erected from a flat cover body 21 that covers the opening 10 a of the case 10 and an abutment surface 21 a of the cover body 21 that abuts the edge of the wall member 12. A pair of wall plates 22 are provided.
The wall plates 22 are provided at both ends of the cover body 21 in the case longitudinal direction X, respectively. Since each wall board 22 has the same configuration, the following description will be made on the wall board 22 disposed on the terminal block 40 side when the cover 20 is attached to the case 10.
The wall plate 22 is formed in a smaller plate shape than the cover main body 21. The wall plate 22 is disposed so as to face the outer peripheral surface 12 a of the wall member 12 when the cover 20 is attached to the case 10.
At both ends of the wall plate 22 in the case short direction Y, deformed portions 23 that protrude from the inner surface of the wall plate 22 (the surface on the center side of the cover main body 21) are formed. Each deformation part 23 is formed in a dome shape. As shown in FIG. 2, the deformable portion 23 is formed on the wall plate 22 toward the end in the Z1 direction (standing direction) where the wall plate 22 stands from the contact surface 21a of the cover main body 21 and toward the Z1 direction. It has the guide surface 23a formed so that it may approach.
In addition, the connection structure 31 of this embodiment is comprised with the terminal block 40 and a pair of deformation | transformation part 23 (refer FIG. 4).
In the present embodiment, the cover main body 21, the wall plate 22, and the pair of deformation portions 23 are integrally formed by pressing a metal plate that is an elastic material.

When the cover 20 is attached to the case 10, the direction parallel to the outer peripheral surface 12 a of the wall member 12 and the contact surface 21 a of the cover main body 21 is the case short direction Y. Hereinafter, a state in which the wall plate 22 is supported and deformed in the case lateral direction Y will be described.
When the cover 20 is attached to the case 10, the wall plate 22 of the cover 20 is inserted into the gap S formed between the wall member 12 and the terminal-side deformed portion 41 as shown in FIGS. . At this time, the terminal side deformation portion 41 of the terminal block 40 contacts the intermediate portion 22a of the wall plate 22 in the case short direction Y, and deforms the intermediate portion 22a toward the outer peripheral surface 12a of the wall member 12. At the same time, the respective deformation portions 23 deform both end portions in the case short direction Y of the wall plate 22 in a direction away from the outer peripheral surface 12 a of the wall member 12.
Thereby, the wall board 22 deform | transforms into the arch shape from which the wall member 12 side becomes convex by planar view.

According to the connection structure 31 of the present embodiment, when the cover 20 is attached to the case 10, the wall plate 22 is made short by the pair of deformed portions 23 provided on the wall plate 22 and the terminal block 40. At the same time as the intermediate portion 22a in the direction Y is deformed toward the wall member 12, both end portions in the case lateral direction Y are deformed in a direction away from the wall member 12. That is, the wall plate 22 is deformed into an arcuate shape in which the wall member 12 side is convex. Then, due to the elastic force of the wall plate 22 generated at this time, the intermediate portion 22 a of the wall plate 22 is pressed against the terminal block 40, and both end portions in the case short direction Y of the wall plate 22 are pressed against the wall member 12. For example, when one deformation portion 23 is formed smaller than the set value, the degree of deformation of the wall plate 22 that deforms into an arcuate shape as shown by a two-dot chain line in FIG. 4 is reduced. However, the state where the intermediate portion 22a of the wall plate 22 is pressed against the terminal block 40 and the both end portions in the case short direction Y are pressed against the wall member 12 is maintained.
Thereby, rattling of the case longitudinal direction X between the case 10 and the cover 20 can be suppressed, and the case 10 and the cover 20 can be reliably connected.
Since the connection structure 31 is provided outside the accommodation space formed by the case 10 and the cover 20, the accommodation capacity of the accommodation space can be ensured.

  The wall plate 22 is supported along the case lateral direction Y so as to alternate from the wall member 12 side, from the terminal block 40 side, and again from the wall member 12 side. Therefore, the wall plate 22 can be stably supported from both sides of the case longitudinal direction X without rotating about the Z1 direction.

Since the deformable portion 23 has the guide surface 23 a, when the guide surface 23 a comes into contact with the wall member 12 when the cover 20 is attached to the case 10, the wall plate 22 moves outward as the cover body 21 approaches the wall member 12. Transform to open. For this reason, the cover 20 can be easily attached to the case 10.
Further, the terminal block 40 has a terminal side deforming portion 41. For this reason, as shown in FIG. 4, by making the curvature radius R2 on the surface on the terminal side deformation portion 41 side of the wall plate 22 deformed into an arc shape larger than the curvature radius R1 of the terminal side deformation portion 41, Even when the position where the terminal side deforming portion 41 contacts is shifted, the terminal side deforming portion 41 can be brought into contact with the wall plate 22 at one place. In order to increase the radius of curvature R2, the length that the deformed portion 23 protrudes or the gap S is increased within the range in which the wall plate 22 is deformed into an arcuate shape when the cover 20 is attached to the case 10. There is a way to do it.
Therefore, the wall plate 22 can always be supported at three locations by the terminal side deformation portion 41 and the pair of deformation portions 23, and the case 10 and the cover 20 can be reliably connected.

The wall plate 22 is supported at three locations by the terminal block 40 and the pair of deforming portions 23 so as to be staggered along the case short direction Y. On the other hand, the case where the wall plate 22 is supported by the terminal block T as shown in FIG. The terminal block T is disposed so as to face the wall member 12. The terminal block T has terminal side protrusions T1 and T2 that come into contact with the wall plate 22 at the contact parts T11 and T12 when the cover 20 is attached to the case 10. The terminal-side protrusions T1 and T2 are disposed so as to be sandwiched between the pair of deformation portions 23 in the case short direction Y.
At this time, when the terminal side protrusion T2 is formed smaller than the initial set value as indicated by a two-dot chain line in the drawing, when the cover 20 is attached to the case 10, the terminal side protrusion T2 is In some cases, the wall plate 22 may be slightly separated. In this case, abnormal noise may occur between the terminal-side protrusion T2 and the wall plate 22. As described above, in order to support the wall plate 22 at four locations, the contact portions T11 and T12 require high dimensional accuracy.
By supporting the wall plates 22 at three locations so as to be staggered, it is possible to prevent abnormal noise from being generated from the wall plates 22 without requiring high dimensional accuracy.
Since the pressing member is the terminal block 40, the member that deforms the wall plate 22 can also be used as the terminal block 40 connected to the case 10. For this reason, the wall plate 22 can be deformed without increasing the number of components used in the housing case 1.

The case 10 and the cover 20 are made of metal, and a connection structure 31 is used for the housing case 1. Therefore, even when the wall plate 22 is separated from the terminal block 40, the deformed portion 23 of the wall plate 22 is pressed against the wall member 12, and even when the deformed portion 23 is separated from the wall member 12, the wall plate 22. Is pressed against the terminal block 40. As described above, the case 10 and the cover 20 are always electrically connected to have the same potential, and the shielding property between the case 10 and the cover 20 is enhanced. Therefore, the influence which the electronic device etc. which were accommodated in the storage case 1 receives from external noise can be reduced.
Since the outer peripheral surface 12a of the wall member 12 is a tapered surface as described above, the deformable portion 23 can be brought into contact with the wall member 12 more reliably when the cover 20 is attached to the case 10.

In the present embodiment, the connection structure can be variously modified as described below.
For example, as shown in FIG. 6, the recess 12b is formed in the outer peripheral surface 12a of the wall member 12, and the deformed portion 23 is engaged with the recess 12b when the cover 20 is attached to the case 10. May be.
The depth at which the recess 12 b is recessed from the outer peripheral surface 12 a is set to be smaller than the length at which the deformable portion 23 protrudes from the inner surface of the wall plate 22.
With this configuration, the degree to which the wall plate 22 deforms into an arcuate shape is reduced, but the cover 20 attached to the case 10 moves in the Z2 direction, which is opposite to the Z1 direction with respect to the case 10. Can be prevented from coming off the case 10.

As shown in FIG. 7, the recess 12 c may be formed on the outer peripheral surface 12 a of the wall member 12, and the deformed portion 27 may be formed on the wall plate 22.
The recess 12c is formed so that the space defined by the recess 12c and the outer peripheral surface 12a is substantially rectangular.
The deformable portion 27 has a guide surface 27a formed so as to approach the wall plate 22 toward the Z1 direction at the end in the Z1 direction, and a locking surface 27b substantially orthogonal to the Z2 direction at the end in the Z2 direction. have.
The length that the deformed portion 27 protrudes from the inner surface of the wall plate 22 is set to be longer than the depth at which the recessed portion 12c is recessed from the outer peripheral surface 12a. The deformable portion 27 can be formed by cutting out a part of a metal plate and cutting it up by pressing.
By configuring in this way, it is possible to more reliably prevent the cover 20 from being detached from the case 10 when the locking surface 27b of the deformable portion 27 is engaged with the recess 12c.

In the modification using the deformable portion 27, as shown in FIGS. 8A and 8B, the deformable portion 28 may be formed in a shape that leaves only half of the Z1 direction. Good.
The deformable portion 28 has a guide surface 28a formed so as to approach the wall plate 22 as it goes in the Z1 direction at the end portion in the Z1 direction, and a locking surface 28b substantially orthogonal to the Z2 direction at the end portion in the Z2 direction. have. The length that the deformed portion 28 protrudes from the inner surface of the wall plate 22 is set to be longer than the depth at which the recessed portion 12c is recessed from the outer peripheral surface 12a.
Even if the deforming portion 28 is configured in this manner, the same effect as the above-described deforming portion 27 can be obtained.

In addition, as shown in FIG. 9, the deformable portion 29 may be configured by folding the end portion of the wall plate 22 in the Z1 direction inward of the wall plate 22. In this case, the length that the deformed portion 29 protrudes from the inner surface of the wall plate 22 (the thickness of the wall plate 22) is set to be longer than the depth at which the concave portion 12c is recessed from the outer peripheral surface 12a.
Also in this modified example, a guide surface 29a is formed on the Z1 direction side of the deformed portion 29, and a locking surface 29b is formed on the Z2 direction side.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. 10, but the same parts as those of the above-described embodiment will be denoted by the same reference numerals, the description thereof will be omitted, and only different points will be described.
As shown in FIG. 10, the connection structure 32 of the present embodiment includes a deforming portion 23 provided on the inner surface of the intermediate portion 22 a of the wall plate 22 and a terminal block 46. At both ends of the terminal block 46 in the case short direction Y, terminal side protrusions 46a protruding from the wall member 12 side surface are formed.
Each terminal-side protrusion 46 a is arranged to face the wall member 12. That is, the terminal side protrusion 46 a forms a gap S between the outer peripheral surface 12 a of the wall member 12. The terminal block 46 is connected to the case 10.
When the cover 20 is attached to the case 10, the deforming portion 23 deforms the intermediate portion 22 a of the wall plate 22 in a direction away from the outer peripheral surface 12 a of the wall member 12, and the terminal side protrusion of the terminal block 46. 46a contacts both ends of the case plate in the lateral direction Y of the wall plate 22, and deforms both ends of the wall plate 22 toward the outer peripheral surface 12a.
Thereby, the wall board 22 deform | transforms into the arch shape which the terminal block 46 side becomes convex by planar view.

  Also in the connection structure 32 of the present embodiment configured as described above, the intermediate portion 22a is pressed against the wall member 12 by the elastic force of the wall plate 22, and both end portions in the case short direction Y of the wall plate 22 are terminals. It is pressed against the side protrusion 46a. Thereby, rattling of the case longitudinal direction X between the case 10 and the cover 20 can be suppressed, and the case 10 and the cover 20 can be reliably connected.

As mentioned above, although 1st Embodiment and 2nd Embodiment of this invention were explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The structure of the range which does not deviate from the summary of this invention Changes are also included. Furthermore, it goes without saying that the configurations shown in the embodiments can be used in appropriate combinations.
For example, in the first embodiment and the second embodiment, when the cover 20 can be easily attached to the case 10, the deforming portion may not have the guide surface.
Although the pressing member is a terminal block, other components connected to the case 10 can be appropriately used as the pressing member.

Moreover, in the said 1st Embodiment and 2nd Embodiment, the wall board 22 was supported by the terminal block and the deformation | transformation part at three places so that it might become alternate in the case transversal direction Y.
However, when the dimensional accuracy for forming parts such as the case 10 and the cover 20 is sufficiently high, the wall plate 22 may be supported at four or more locations.
When the terminal side protrusion T2 is formed smaller than the initial set value as shown by a two-dot chain line in FIG. 5, the terminal side protrusion T2 is adjusted by adjusting the direction in which the terminal block T is connected to the case 10. Is moved to the wall plate 22 side, and the terminal side protrusion T1 is moved to the side away from the wall plate 22. By adjusting in this way, it is possible to suitably cope with the case where the wall plate 22 is supported at four or more locations.

In the first embodiment, the deformable portions 23 are formed at both end portions of the wall plate 22 in the case short direction Y, respectively. However, the wall plate 22 is not limited to this as long as the pair of deformable portions 23 are arranged so as to sandwich the intermediate portion 22a in the case short direction Y.
Also in the connection structure 32 of the second embodiment, when the cover 20 is attached to the case 10, the pair of terminal-side protrusions 46 a only need to be arranged so as to sandwich the deformable portion 23 in the case short direction Y. .

DESCRIPTION OF SYMBOLS 1 Storage case 10 Case 10a Opening 11 Case main body 12 Wall member 12a Outer peripheral surface 12b, 12c Recessed part 20 Cover 21 Cover main body 21a Contact surface 22 Wall board 22a Middle part 23, 27, 28, 29 Deformation part 23a, 27a, 28a, 29a Guide surface 31, 32 Cover connection structure 40, 46 Terminal block (holding member)
41 Terminal side deformed part (pressing side deformed part)
Y Case short direction (reference direction)
Z1 direction (standing direction)

Claims (6)

A plate-like case main body, a case having a wall member standing from an edge of the case main body, a cover main body covering the opening of the case, and an abutment surface of the cover main body abutting on the edge of the wall member A cover having a wall plate erected from the cover, the cover body being disposed so that the wall plate faces the outer peripheral surface of the wall member when the cover body is attached to the wall member Structure,
With the cover attached to the case, when the direction parallel to the outer peripheral surface and the contact surface of the wall member facing the wall plate is a reference direction,
A pressing member that contacts an intermediate portion of the wall plate in the reference direction and deforms the intermediate portion of the wall plate toward an outer peripheral surface of the wall member;
A pair of deforming portions that deform both sides of the intermediate portion of the wall plate in the reference direction toward a direction away from the outer peripheral surface of the wall member;
The pressing member is connected to the case,
The cover connection structure, wherein the pair of deformation portions are provided on the wall plate. A recess is formed on the outer peripheral surface of the wall member,
The deformation part is formed to protrude from the wall plate,
The cover connection structure according to claim 1, wherein the deformable portion is engaged with the concave portion.   The deforming portion has a guide surface formed so as to approach the wall plate toward the standing direction at an end portion in the standing direction where the wall plate stands from the contact surface of the cover body. The cover connection structure according to claim 1, wherein the cover connection structure is provided. The pressing member has a pressing side deformation portion formed in a curved shape that is convex toward the outer peripheral surface of the wall member,
4. The cover connection structure according to claim 1, wherein when the cover is attached to the case, the pressing side deformable portion contacts the intermediate portion of the wall plate. 5. .   The cover connection structure according to any one of claims 1 to 4, wherein the pressing member is a terminal block. A plate-like case main body, a case having a wall member standing from an edge of the case main body, a cover main body covering the opening of the case, and an abutment surface of the cover main body abutting on the edge of the wall member A cover having a wall plate erected from the cover, the cover body being disposed so that the wall plate faces the outer peripheral surface of the wall member when the cover body is attached to the wall member Structure,
With the cover attached to the case, when the direction parallel to the outer peripheral surface and the contact surface of the wall member facing the wall plate is a reference direction,
A deforming portion for deforming an intermediate portion of the wall plate in the reference direction toward a direction away from the outer peripheral surface of the wall member;
A pressing member that contacts both sides of the intermediate portion of the wall plate in the reference direction and deforms both sides of the intermediate portion in the reference direction toward the outer peripheral surface of the wall member, and
The pressing member is connected to the case,
The cover connection structure, wherein the deforming portion is provided on the wall plate.

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