chassis

Abstract

To reduce workload and satisfactorily exhibit connection strength between wall bodies, while relaxing structural constraints.SOLUTION: A housing (10) connects a first wall body (20A) and a second wall body (20B) adjacent to each other through a connection tool (30). The wall bodies each include a connection surface part (22) that is extended from an outer edge of a principal surface part (21) as a base end and has a leading end inside the housing. The connection surface part includes a hole (22a) in which the connection surface parts of the wall bodies are in contact with each other and internal spaces are communicated with each other. The connection tool includes an insertion piece part (31) that is inserted into the hole in the wall body, and an insertion part (32) that is provided in a shape in contact with the wall body at a predetermined length and applies a force in a direction in which the connection surface parts of the wall bodies are brought into contact with each other. The insertion part includes a reception port (37) that can be received from an intermediate part in an extension direction of the connection surface part when the insertion piece part is inserted into the hole.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a housing formed by connecting walls. [Background technology]

[0002] A distribution board or the like equipped with a predetermined electrical device is configured with a box-shaped housing. In such a housing, a configuration in which two or more walls are arranged and connected on the same plane or in perpendicular directions is known. Such a configuration for connecting walls is disclosed in Patent Document 1.

[0003] In Patent Document 1, two wall bodies are connected via a sheath member. One side of the wall body is provided with a bent portion, and a locking edge portion is formed by bending the tip edge of the bent portion toward the wall body at an acute angle. The sheath member has a predetermined length and is formed with a cross section that is generally arrow-shaped. The sheath member has two parallel edge portions that protrude from a sheath portion having a generally triangular insertion hole, maintaining a gap between them.

[0004] In Patent Document 1, when two wall bodies are connected, the two bent portions are arranged so that the locking edges are back-to-back. In this state, the locking edges are inserted into the insertion holes of the sheath member, and the sheath member is attached across the two bent portions. In this way, the bent portions are sandwiched between the parallel edge portions to connect the two wall bodies, and the abutting state of the two bent portions is maintained. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-65068 Summary of the Invention [Problem to be solved by the invention]

[0006] In Patent Document 1, the sheath is attached by inserting and sliding the locking edge into the insertion hole of the sheath from either end of the extending direction of the bent portion of the wall body. This requires securing space at both ends of the extending direction of the bent portion to allow the sheath to be inserted, which creates a problem of significant structural constraints, such as shortening the bent portion or making the housing itself larger.

[0007] Furthermore, in Patent Document 1, when the sheath member is slid to be attached, not only does the inner surface of the sheath come into contact with the locking edge, but the two parallel edge portions and the bent portion also come into surface contact and rub against each other. This increases frictional resistance when attaching (inserting) the sheath member, which increases the workload of attaching the sheath member and ultimately connecting the two wall bodies. While the frictional resistance can be reduced if the parallel edge portions are spaced apart from the bent portion, the sheath member's contact pressure (the pressure at which the surfaces come into contact with each other; the same applies below) between the two parallel edge portions is reduced, resulting in a problem of insufficient strength to connect the two wall bodies.

[0008] Another conventional structure for connecting two walls involves drilling holes in the bent portions of the walls and fastening them with rivets. This structure requires a dedicated riveting device, which increases the workload, and also imposes significant structural constraints, such as the need to form the holes and the surrounding structure to allow for the use of the dedicated device.

[0009] The present invention has been made in consideration of these points, and one of its objects is to provide a housing that can alleviate structural constraints, reduce the workload, and provide good connecting strength for the two wall bodies. [Means for solving the problem]

[0010] A housing according to one aspect of the present invention is a housing that is configured by a plurality of wall bodies, and at least two adjacent wall bodies are connected via a connector, and the wall bodies have a main surface portion that forms an outer peripheral surface of the housing, and a joint surface portion that is connected to the outer edge side of the main surface portion as a base end and has a tip end on the inside or outside of the housing,One of the two wall bodies has a protruding surface portion that is connected to a tip end side of the joint surface portion and protrudes in a direction facing the main surface portion, The joint surface portion has a hole that allows internal spaces to communicate with each other when the joint surface portions of the two wall bodies are in contact with each other, and the connector has an insertion piece portion that is inserted into the hole in the two wall bodies, and a clamping portion that is shaped to contact the wall body at a predetermined length in the extension direction of the outer edge and applies a force in a direction in which the joint surface portions of the two wall bodies come into contact with each other, and the clamping portion has a receiving opening that can receive the insertion piece portion from an intermediate portion in the extension direction of the joint surface portion when the insertion piece portion is inserted into the hole. a first forming portion connected to the insertion piece portion and oriented in a direction intersecting the insertion piece portion; a second forming portion formed apart from the first forming portion and sandwiching the joint surface portions of the two wall bodies with the first forming portion; and a third forming portion connecting the first forming portion and the second forming portion. Equipped with The third forming portion is in surface contact with the protruding surface portion. It is characterized by: [Effects of the Invention]

[0011] According to the present invention, a connector can be attached by clamping the two joining surfaces of two wall bodies with the joining surfaces in contact with each other using a clamping portion. Such attachment requires only inserting the insertion piece into the hole and receiving the joining surfaces through the receiving opening of the clamping portion, eliminating the need for a separate tool or sliding the connector in the direction of extension of the joining surfaces. This reduces the workload of connecting two wall bodies while easing structural constraints such as ensuring space for tools and for sliding the connector. Furthermore, because the connector can be attached without sliding, friction with the joining surfaces during attachment can be reduced, and even if the force applied from the clamping portion is increased, the attachment workload can be avoided. This allows for an increased force to be applied from the clamping portion, increasing the contact pressure between the two joining surfaces and providing excellent connection strength for the two wall bodies. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 2 is a schematic perspective view of a housing according to the first embodiment. [Figure 2] FIG. 2 is a schematic perspective view for explaining a connection structure of a wall body in the first embodiment. [Figure 3] FIG. 3 is an exploded view of FIG. 2. [Figure 4]4A is a cross-sectional view taken along line AA in FIG. 2, FIG. 4B is a cross-sectional view similar to FIG. 4A showing the state immediately before the connector is attached, and FIG. 4C is a cross-sectional view similar to FIG. 4A showing the state halfway through attaching the connector. [Figure 5] FIG. 3 is a schematic diagram of two wall bodies in the first embodiment as viewed from the inside. [Figure 6] 4B is a cross-sectional view similar to FIG. 4A, showing a wall connection structure according to a first modified example. [Figure 7] FIG. 4B is a cross-sectional view similar to FIG. 4A, showing a wall connection structure according to a second modified example. [Figure 8] 4B is a cross-sectional view similar to FIG. 4A, showing a wall connection structure according to a third modified example. [Figure 9] 4B is a cross-sectional view similar to FIG. 4A, showing a wall connection structure according to a fourth modified example. FIG. [Figure 10] 4B is a cross-sectional view similar to FIG. 4A, showing a wall connection structure according to a fifth modified example. DETAILED DESCRIPTION OF THE INVENTION

[0013] A housing according to one embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The present invention is not limited to the following embodiment, and can be appropriately modified and implemented without departing from the spirit of the present invention. For the sake of convenience, some components may be omitted from the following figures. Furthermore, in the following description, unless otherwise specified, "upper," "lower," "left," "right," "front," and "rear" refer to the directions indicated by arrows in each figure. However, the orientation of each component is merely an example, and can be changed to any orientation.

[0014] FIG. 1 is a schematic perspective view of a housing according to an embodiment. The housing 10 shown in FIG. 1 has a predetermined storage space therein, and stores predetermined electrical equipment such as a distribution board, a control panel, and a circuit breaker (not shown) in the storage space. The housing 10 is formed by connecting a plurality of panel-shaped walls. More specifically, the housing 10 has an upper wall 11, a lower wall 12, and a plurality of side walls 20 provided between the upper wall 11 and the lower wall 12. In this embodiment, a plurality of side walls 20 (four in FIG. 1) are provided side by side on both the front and rear sides of the upper wall 11 and the lower wall 12. Each of the walls 11, 12, and 20 is not particularly limited, but can be formed from a metal plate such as a steel plate.

[0015] Next, the connection structure of two side wall bodies 20 adjacent in the left-right direction will be described. Here, as a representative example, the connection structure of the part surrounded by the two-dot chain line in Fig. 1 will be described. Hereinafter, of the left and right side wall bodies 20 including the part surrounded by the two-dot chain line in Fig. 1, the side wall body 20 located on the left side will be referred to as the first wall body 20A, and the side wall body 20 located on the right side will be referred to as the second wall body 20B.

[0016] Fig. 2 is a schematic perspective view illustrating the connection structure of the walls in the embodiment. Fig. 3 is an exploded view of Fig. 2. As shown in Figs. 2 and 3, the right end of the first wall 20A and the left end of the second wall 20B are formed by bending, and are connected adjacent to each other. The first wall 20A and the second wall 20B each have a main surface portion 21 and a joining surface portion 22. The first wall 20A further has a protruding surface portion 23.

[0017] The main surface portion 21 is provided parallel to the vertical and horizontal directions and forms the outer peripheral surface of the housing 10 (see FIG. 1). The main surface portion 21 has a rectangular shape that is substantially the same as the planar shape of the first wall body 20A and the second wall body 20B, and has two long sides that extend in the vertical direction on both the left and right sides.

[0018] The joint surface portion 22 is formed to protrude rearward (inward of the housing 10) from the outer edge that forms the long side of the main surface portion 21. Therefore, the joint surface portion 22 is connected to the outer edge side of the main surface portion 21 as a base end, and has a tip end inside the housing 10. The joint surface portion 22 is oriented in a direction that is approximately perpendicular to the main surface portion 21.

[0019] The protruding surface portion 23 protrudes from the tip side of the joining surface portion 22 in a direction facing the rear surface (inner surface) of the main surface portion 21. In other words, the protruding surface portion 23 is continuous with the tip of the joining surface portion 22 and is arranged at a predetermined distance behind the main surface portion 21. The protruding surface portion 23 has a base end on the tip side of the joining surface portion 22 and a tip on the opposite side of the base end in the left-right direction. The protruding surface portion 23 is oriented in a direction that is approximately perpendicular to the joining surface portion 22.

[0020] The first wall body 20A and the second wall body 20B are arranged such that their respective main surface portions 21 are flush with each other and their respective joint surface portions 22 are in contact with each other (the state shown in FIG. 2). In this state, the rear surface of the protruding surface portion 23 of the first wall body 20A and the leading end surface (rear end surface) of the joint surface portion 22 of the second wall body 20B are arranged so as to be at the same position in the front-rear direction and are aligned in the left-right direction.

[0021] The joining surface portion 22 of each of the first wall body 20A and the second wall body 20B has holes 22a that serve as slot holes (the holes 22a of the first wall body 20A are not shown in FIG. 2). The holes 22a extend in the up-down direction, which is the extension direction of the outer edge of the main surface portion 21. The holes 22a are also formed along the boundary between the joining surface portion 22 and the main surface portion 21 (see FIG. 4B). In the state shown in FIG. 2, the holes 22a of each of the first wall body 20A and the second wall body 20B are formed at the same positions in the up-down direction and the front-rear direction, so that the internal spaces are mutually connected in the left-right direction. In this state, a connector 30 is attached across the first wall body 20A and the second wall body 20B.

[0022] The connector 30 includes an insertion piece portion 31 and a clamping portion 32. The connector 30 has a shape that extends in the vertical direction (a predetermined linear direction), which is the extension direction of the outer edges along which the joining surface portion 22 and the protruding surface portion 23 are formed. Therefore, the connector 30 including the insertion piece portion 31 and the clamping portion 32 is formed so that its cross-sectional shape is generally uniform in the extension direction, and is in contact with the joining surface portion 22 and the protruding surface portion 23 over a predetermined length in the extension direction.

[0023] The connector 30 can be formed, for example, by cutting a long member formed by extrusion molding to a predetermined length, by injection molding, or by bending a single plate member. The connector 30 is made of a metal material such as aluminum, stainless steel, or spring steel, or an appropriate resin material, and is configured to be elastically deformable by the application of an intentional external force. In the connector 30 of this embodiment, the corner side of the bent portion is formed into an arc-shaped cross section.

[0024] Fig. 4A is a cross-sectional view taken along line AA in Fig. 2. As shown in Fig. 3 and Fig. 4A, when the connector 30 is attached to the first wall body 20A and the second wall body 20B, the insertion piece 31 is inserted into the hole 22a of each of the first wall body 20A and the second wall body 20B. Since each hole 22a is formed along the boundary between the joining surface portion 22 and the main surface portion 21, when the insertion piece 31 is inserted into the hole 22a, the insertion piece 31 comes into contact with the rear surface of the main surface portion 21.

[0025] Here, the vertical length of the insertion piece 31 is formed to be the same as or slightly smaller than the vertical dimension of the hole 22a, and the thickness (front-to-back width) of the insertion piece 31 is formed to be the same as or slightly smaller than the front-to-back dimension of the hole 22a. Thus, by inserting the insertion piece 31 into the holes 22a of the first wall body 20A and the second wall body 20B, relative movement between the first wall body 20A and the second wall body 20B in the vertical and front-to-back directions is restricted. The upper end of the insertion piece 31 is chamfered (see FIG. 3), and although not shown, the lower end of the insertion piece 31 is also chamfered.

[0026] The sandwiching portion 32 is bent at multiple locations and continues from the right end of the insertion piece 31. The sandwiching portion 32 includes a first forming portion 33, a second forming portion 34, and a third forming portion 35 that connects the first forming portion 33 and the second forming portion 34 and extends in the left-right direction.

[0027] The first forming portion 33 is connected to the right end of the insertion piece 31 and faces in the front-to-rear direction, which is a direction intersecting with the insertion piece 31. Therefore, the connection portion between the first forming portion 33 and the insertion piece 31 is set at a substantially right angle. When the connector 30 is attached to each wall body 20A, 20B, the first forming portion 33 is in surface contact with the right surface of the joining surface portion 22 of the second wall body 20B.

[0028] The second forming portion 34 has an L-shaped bend, and the right surface of the portion facing the front-rear direction contacts the tip (left end) of the protruding surface portion 23 of the first wall body 20A. The second forming portion 34 is formed separated from the first forming portion 33 via the third forming portion 35. Specifically, the separation width W1 between the first forming portion 33 and the second forming portion 34 is formed to be slightly smaller than or equal to the sum of the left-right widths W2 of the protruding surface portion 23 of the first wall body 20A and the joining surface portion 22 of the second wall body 20B when the two joining surface portions 22 are in surface contact (see FIG. 4B ). As a result, the first forming portion 33 and the second forming portion 34 elastically sandwich the joining surface portion 22 and the protruding surface portion 23 of the first wall body 20A and the joining surface portion 22 of the second wall body 20B.

[0029] Here, the insertion piece portion 31, the first forming portion 33 and the second forming portion 34 are formed to be substantially flat, without being bent or curved.

[0030] The third forming portion 35 is connected to the rear ends of the first forming portion 33 and the second forming portion 34 and is oriented in the left-right direction, which intersects with the first forming portion 33 and the second forming portion 34. Therefore, the connection portions of the first forming portion 33 and the second forming portion 34 to the third forming portion 35 are set at approximately right angles.

[0031] The third forming portion 35 is in surface contact with the rear surface of the protruding surface portion 23 of the first wall body 20A and the rear end surface of the joining surface portion 22 of the second wall body 20B. Therefore, the third forming portion 35 and the insertion piece portion 31 sandwich the joining surface portions 22 of the first wall body 20A and the second wall body 20B from the front-rear direction.

[0032] Fig. 5 is a schematic diagram of two walls according to the embodiment, viewed from the inside. As shown in Fig. 5, in the first wall 20A and the second wall 20B, the joint surface 22 and the protruding surface 23 extend along the entire outer edge of the long side of the main surface 21 in the up-down direction. The joint surface 22 of the first wall 20A and the second wall 20B are in contact with each other and are connected via the connector 30.

[0033] 5, connectors 30 are provided as separate members at both ends of the joining surface portion 22 and the protruding surface portion 23 in the vertical direction (extension direction of the joining surface portion 22 and the protruding surface portion 23). Also in the same figure, connectors 30 separate from the connectors 30 at both ends are provided at intermediate portions of the joining surface portion 22 and the protruding surface portion 23 in the vertical direction, and a total of three connectors 30 are provided between the first wall body 20A and the second wall body 20B. In this way, two adjacent side walls 20 (the first wall body 20A and the second wall body 20B) can be connected via a plurality of connectors 30.

[0034] The use of three connectors 30 as shown in Figure 5 is one example and may be modified. For example, the connector 30 in the middle in the vertical direction may be omitted, and only two connectors 30 may be provided at both ends in the vertical direction. Furthermore, in addition to the two connectors 30 at both ends in the vertical direction, multiple connectors 30 may be provided at predetermined intervals, for a total of four or more connectors 30. The vertical length, attachment position, and number of connectors 30 may be modified as desired depending on various conditions, such as the size, weight, thickness, etc. of the first wall body 20A and the second wall body 20B, as well as the use of the housing 10.

[0035] Next, a method of connecting first wall body 20A and second wall body 20B with connector 30 will be described below with reference to Fig. 4B and Fig. 4C in addition to Fig. 4A. Fig. 4B is a cross-sectional view similar to Fig. 4A, showing a state immediately before the connector is attached, and Fig. 4C is a cross-sectional view similar to Fig. 4A, showing a state halfway through attaching the connector.

[0036] 4B, the positions of the joining surface portions 22 of the first wall body 20A and the second wall body 20B in the front-rear direction are aligned, and the joining surface portions 22 are arranged so as to be in surface contact with each other. As a result, the rear surface of the protruding surface portion 23 of the first wall body 20A and the rear end surface of the joining surface portion 22 of the second wall body 20B are positioned on the same plane, and the holes 22a of the first wall body 20A and the second wall body 20B are connected to each other in the left-right direction.

[0037] In this state, the vertical position of the connector 30 is aligned with each hole 22a on the rear side of the main surface portion 21 of the second wall body 20B, and then the connector 30 is moved from right to left (horizontally) toward the hole 22a of the joining surface portion 22 of the second wall body 20B.

[0038] This approach displaces the connector 30 so that the insertion piece 31 is inserted from the right side of each hole 22a, and elastically deforms the clamping portion 32 so that the second forming portion 34 contacts the rear surface of the protruding surface portion 23 of the first wall body 20A, as shown in Fig. 4C. At this time, in the clamping portion 32, a receiving opening 37 is formed between the tip side (lower end side) of the second forming portion 34 and the tip side (left end side) of the insertion piece 31, and the joining surface portion 22 and the protruding surface portion 23 are received into the clamping portion 32 through the receiving opening 37. This makes it possible to receive the joining surface portion 22 and the protruding surface portion 23 into the clamping portion 32 from the middle portion in the extension direction, without inserting and sliding the connector 30 from both the upper and lower ends of the joining surface portion 22 or the protruding surface portion 23.

[0039] When the connector 30 is further slid leftward from the state shown in Fig. 4C, the connector 30 returns to the state shown in Fig. 4A, and is attached across the first wall body 20A and the second wall body 20B. More specifically, this attached state is such that the insertion piece 31 is inserted into the holes 22a of the first wall body 20A and the second wall body 20B. This restricts the relative movement of the first wall body 20A and the second wall body 20B in the up-down and front-back directions.

[0040] In addition, the third forming portion 35 is in face contact with the rear surface of the protruding surface portion 23 of the first wall body 20A and the rear end surface of the joining surface portion 22 of the second wall body 20B, and the two joining surface portions 22 are sandwiched from the front-to-back direction between the third forming portion 35 and the insertion piece portion 31.

[0041] Furthermore, the second forming portion 34 contacts the tip surface (left end surface) of the protruding surface portion 23 of the first wall body 20A, and the first forming portion 33 comes into surface contact with the right surface of the joining surface portion 22 of the second wall body 20B. In this state, due to the elasticity of the sandwiching portion 32, the joining surface portion 22 and the protruding surface portion 23 of the first wall body 20A and the joining surface portion 22 of the second wall body 20B are sandwiched from the left and right directions by the first forming portion 33 and the second forming portion 34. Therefore, a force is applied via the first forming portion 33 and the second forming portion 34 in a direction that brings the two joining surface portions 22 into contact with each other, generating a contact pressure.

[0042] As described above, in the first embodiment, the operation of attaching the connector 30 is performed as described above, eliminating the need for additional tools such as a riveter or screwdriver, and eliminating the need to slide the connector 30 up and down. This simplifies the operation of connecting the first wall body 20A and the second wall body 20B, reducing the burden on the user. Furthermore, structural constraints such as the need to secure space for the above-mentioned tools and space for sliding the connector 30 around the connection position of the first wall body 20A and the second wall body 20B can be alleviated.

[0043] Furthermore, because the connector 30 can be attached without sliding vertically along the joint surfaces 22, etc., friction between the joint surfaces 22, etc. and the clamping portion 32 during the attachment operation can be suppressed, and the workload for attachment can be prevented from increasing even if the clamping force applied by the clamping portion 32 is increased. Therefore, the force applied by the clamping portion 32 can be increased, and the contact pressure between the two joint surfaces 22 can be increased, thereby providing good connection strength between the first wall body 20A and the second wall body 20B.

[0044] Furthermore, the sandwiching portion 32 is provided with the first to third forming portions 33 to 35 and is formed in a generally U-shape, so that the contact pressure between the two joining surface portions 22 can be ensured with a simple shape.

[0045] Furthermore, since the first forming portion 33 is in surface contact with the joining surface portion 22 of the second wall body 20B, an area for applying a clamping force from the clamping portion 32 can be secured, and the contact pressure of the two joining surface portions 22 can be effectively exerted.

[0046] Furthermore, because the third forming portion 35 and the insertion piece portion 31 sandwich the two joining surface portions 22 from the front-to-rear direction, the first forming portion 33 restricts the relative movement of the second wall body 20B in the front-to-rear direction, thereby contributing to maintaining a good connection state. Moreover, because the third forming portion 35 is in surface contact with the protruding surface portion 23, it is possible to ensure an area for the third forming portion 35 to apply a force to press the protruding surface portion 23.

[0047] Furthermore, bending the second forming portion 34 increases the rigidity of the second forming portion 34 itself, thereby enabling the clamping force of the clamping portion 32 to be exerted effectively. Also, because the bent portion of the second forming portion 34 has an arc shape, the sliding action of the second forming portion 34 relative to the protruding surface portion 23 can be made smoother when the connector 30 is attached.

[0048] Furthermore, even in a configuration having a protruding surface portion 23 like the first wall body 20A, the second forming portion 34 can come into contact with the tip of the protruding surface portion 23 and apply a clamping force from the clamping portion 32.

[0049] Furthermore, each wall body 20A, 20B is bent at a substantially right angle to form the joining surface portion 22 and the protruding surface portion 23, and the angle of the connecting portion of each component of the connector 30 is also set at a substantially right angle. This makes it possible to maintain stable and strong contact between the mutual surface-contacting portions, thereby enabling the wall bodies 20A, 20B to exhibit good connecting strength.

[0050] Furthermore, since the hole 22a is formed at the boundary between the joining surface portion 22 and the main surface portion 21, the main surface portion 21 and the insertion piece portion 31 can be brought into contact with each other, thereby more effectively exerting a force that restricts movement in the forward and backward directions.

[0051] Furthermore, since the hole 22a and the insertion piece portion 31 have a predetermined length in the vertical direction, the area over which a clamping force is applied to the joining surface portion 22 can be expanded compared to spot-shaped rivet fastening, thereby improving the connection strength.

[0052] The present invention is not limited to the above-described embodiment, and various modifications can be made to the embodiment. In the above-described embodiment, the size, shape, orientation, etc. shown in the accompanying drawings are not limited to these, and can be modified as appropriate within the scope of the effects of the present invention. In addition, the present invention can be modified as appropriate without departing from the scope of the object of the present invention.

[0053] The above-described connector 30 can be modified in various ways depending on the configuration of the wall body 20, and specific examples include the configurations of the modified examples shown in Figs. 6 to 10. Fig. 6 is a cross-sectional view similar to Fig. 4A, showing a wall body connection structure according to a first modified example. Fig. 7 is a cross-sectional view similar to Fig. 4A, showing a wall body connection structure according to a second modified example. Fig. 8 is a cross-sectional view similar to Fig. 4A, showing a wall body connection structure according to a third modified example. Fig. 9 is a cross-sectional view similar to Fig. 4A, showing a wall body connection structure according to a fourth modified example. Fig. 10 is a cross-sectional view similar to Fig. 4A, showing a wall body connection structure according to a fifth modified example.

[0054] In the first modified example shown in FIG. 6, the shape of the second forming portion 34 is changed from that of the first embodiment. The second forming portion 34 of the first modified example is provided in a shape that linearly protrudes forward from the left end of the third forming portion 35. As such, the second forming portion 34 may have various shapes as long as it can provide substantially the same function as in the above embodiment. Therefore, the second forming portion 34 may have a curved cross-sectional shape in addition to the shapes shown in FIG. 6 and FIG. 4A.

[0055] 7, the position of the hole 22a in the bonding surface portion 22 is changed from that of the first embodiment. The hole 22a in the second modification is formed in the middle portion in the extension direction (front-rear direction) of the bonding surface portion 22, and accordingly the front-rear width of the first forming portion 33 is made smaller than that of the first embodiment. In this way, the position of the hole 22a in the bonding surface portion 22 and the size of the first forming portion 33 may be changed as long as substantially the same function as in the above embodiment can be obtained.

[0056] 8, the third modified example is different from the first embodiment in that the protruding surface portion 23 of the first wall body 20A is omitted and a joining surface portion 22 is formed instead. The third forming portion 35 of the third modified example has a smaller left-right width than the third forming portion 35 of the above embodiment, and is formed with a left-right width corresponding to the thickness of the two overlapping joining surface portions 22.

[0057] 9 and the fifth modified example shown in FIG. 10, the first embodiment is modified in that the protruding surface portion 23 is formed on both the first wall body 20A and the second wall body 20B. The third forming portion 35 in the fourth and fifth modified examples is larger in left-right width than the third forming portion 35 in the above-described embodiment, and is formed with a left-right width corresponding to the sum of the left-right widths of the two adjacent protruding surface portions 23. As exemplified in the third to fifth modified examples, the formation of the protruding surface portion 23 on each of the connected wall bodies 20A, 20B is optional, and the third forming portion 35 may be changed depending on the presence or absence and length of the protruding surface portion 23.

[0058] In the fourth modified example, the left-right length of the insertion piece 31 is longer than in the first embodiment, and the first forming portion 33 contacts the tip surface (right end surface) of the protruding surface portion 23 of the second wall body 20B. In the fifth modified example, the cross section of the first forming portion 33 is formed in a crank shape, and the first forming portion 33 contacts both the right surface of the joining surface portion 22 of the second wall body 20B and the tip surface (right end surface) of the protruding surface portion 23.

[0059] In the above embodiment, the angle of the main surface portion 21 and the protruding surface portion 23 relative to the joining surface portion 22 is formed at a substantially right angle, but this is not limited thereto and the angle may be changed to an acute angle or an obtuse angle. In such a configuration, the angle of the bending portion of the connector 30 may also be changed to an acute angle or an obtuse angle other than a substantially right angle in accordance with the change in the angle.

[0060] Furthermore, a single connector 30 may have a configuration in which a plurality of second forming portions 34 of the insertion piece portion 31 and the clamping portion 32 are formed at predetermined intervals. When a plurality of insertion piece portions 31 are provided, a corresponding plurality of holes 22a are also formed in the joining surface portion 22.

[0061] Furthermore, the shape of the main surface portion 21 only needs to form the outer peripheral surface of the housing 10, and in addition to being formed flat, it may also be formed in a curved shape along an arc or a bent shape.

[0062] Furthermore, the walls connected by the connector 30 may be adjacent walls, such as the side wall 20 and the upper wall 11 or the lower wall 12. In this case, the angle between the main surface 21 and the joining surface 22 may be an acute angle, or the main surface 21 may have a bent shape.

[0063] Furthermore, in the above embodiment, the connector 30 is provided inside the housing 10, but the connector 30 may be provided outside the housing 10. In this configuration, the joint surface portion 22 has a tip end facing outward (forward) from the housing 10, and the protruding surface portion 23 protrudes from the tip side of the joint surface portion 22 in a direction facing the front surface (outer surface) of the main surface portion 21. [Explanation of symbols]

[0064] 10:Case 11: Upper wall (wall) 12: Lower wall (wall) 20: Side wall (wall) 20A: 1st wall (wall) 20B: Second wall (wall) 21: Main Face 22: Joining the face 22a: Hole 23: Emphasize the face 30: Connector 31:Penetration part 32:Hold on 33: First Formation Section 34: Second Formation Section 35: Third Formation Section 37: Receive the entrance into the mouth

Claims

1. A housing configured by a plurality of walls, at least two adjacent walls being connected via a connector, the wall body includes a main surface portion that forms an outer peripheral surface of the housing, and a joint surface portion that is continuous with the outer edge side of the main surface portion as a base end and has a tip end on the inside or outside of the housing, One of the two wall bodies has a protruding surface portion that is continuous with a tip end side of the joint surface portion and protrudes in a direction facing the main surface portion, the joint surface portion has a hole through which the internal spaces communicate with each other when the joint surface portions of the two wall bodies are in contact with each other, the connecting tool includes an insertion piece portion that is inserted into the holes in the two wall bodies, and a clamping portion that is shaped to contact the wall bodies at a predetermined length in the extending direction of the outer edge and that applies a force in a direction that causes the joining surfaces of the two wall bodies to come into contact with each other; The clamping portion includes a receiving opening that can receive the insertion piece portion from an intermediate portion in the extending direction of the joining surface portion when the insertion piece portion is inserted into the hole, a first forming portion that is continuous with the insertion piece portion and faces in a direction intersecting the insertion piece portion, a second forming portion that is formed apart from the first forming portion and that clamps the joining surface portions of the two wall bodies with the first forming portion, and a third forming portion that connects the first forming portion and the second forming portion, The housing is characterized in that the third forming portion is in surface contact with the protruding surface portion.

2. The housing according to claim 1 , wherein the first forming portion is in surface contact with the joint surface of one of the two wall bodies.

3. 3. The housing according to claim 1, wherein the third forming portion is provided at a position where the joining surface portions of the two wall bodies are sandwiched between the third forming portion and the insertion piece portion.

4. 4. The housing according to claim 1, wherein the second forming portion has a bent or curved shape.

5. 5. The housing according to claim 1, wherein the second forming portion contacts a tip of the protruding surface portion.

6. In the two wall bodies, the joining surface portion is oriented in a direction that is approximately perpendicular to the main surface portion, and the protruding surface portion is oriented in a direction that is approximately perpendicular to the joining surface portion, A housing described in any one of claims 1 to 5, characterized in that the angles of the connection portion between the insertion piece portion and the first forming portion, the connection portion between the first forming portion and the third forming portion, and the connection portion between the second forming portion and the third forming portion are set to approximately right angles.

7. 7. The housing according to claim 1, wherein the hole is formed at a boundary between the joining surface and the main surface.

8. The hole is a slot hole extending in the direction of extension of the outer edge, 8. The housing according to claim 1, wherein the insertion piece is formed to have a length equal to or slightly smaller than a length of the slot hole in the extending direction.

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