JPH0670286U - Electrical equipment enclosure case - Google Patents

Abstract

(57) [Summary] [Structure] A box body 10 having a bottom surface and four side walls 10a, 10b for accommodating and arranging electrical equipment and the like, and a lid body 20 fitted to close the opening of the box body. In an electric equipment enclosure case, at least a pair of holding pieces 21a, 21b for holding each of the four side walls by external fitting in the vicinity of the opening of the box in the lid, and extending in a direction substantially parallel to the holding direction of the side walls by the holding pieces. Providing a positioning piece 21d for projecting,
The box body is provided with a notch groove 10f for guiding the positioning piece when fitting the lid body and for restricting the movement of the lid body in a direction substantially perpendicular to the holding direction. [Effect] The weight of the case as a whole can be reduced, a predetermined strength as the case can be secured, and the work of assembling the lid can be easily performed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a case for housing and arranging an electric device mounted on a vehicle, and more particularly to an electric device surrounding case which forms a housing by using a lid.

[0002]

[Prior art]

 Conventionally, a housing as shown in FIG. 1 has been used as an outer case for housing electric devices such as an amplifier and a tuner mounted on a vehicle. As shown in the figure, this is a rectangular parallelepiped box in which one side is opened by raising a part to be the side wall 1a on four sides by cutting and bending a sheet metal having a plate thickness t = 0.8 mm or 1.0 mm. The body 1 is formed, and the same sheet metal is processed to erect the portion to be the side wall 2a to form the lid body 2 with one surface open, and the lid body 2 is externally fitted from the opening direction of the box body 1. At the same time, screws are screwed into the screw holes 1b and 2b formed on the side walls of both to fix the two, and a case for accommodating and arranging electrical equipment and the like is provided.

In such a case structure, since the side walls 1a and 2a of the box body 1 or the lid body 2 are only raised by bending, the bending strength in the direction perpendicular to the side wall surface is ensured. Therefore, it is necessary to use the thick metal plate as described above. On the other hand, in response to the demands of the times, weight reduction of the devices installed in vehicles has become an important issue. Therefore, weight reduction is being considered even for cases that store such electrical equipment. As a means of reducing the weight, it is conceivable to reduce the thickness of the metal plate forming the case. However, if the plate is simply thinned with the conventional structure, the rigidity of the case itself will decrease and New problems such as insufficient strength and difficulty in assembling work arise in terms of workability and workability when assembling the lid.

[0004]

[Problems to be solved by the device]

 In view of the above-mentioned problems of the prior art, an object of the present invention is a case including a box body and a lid body for accommodating electric devices mounted on a vehicle, which maintains a predetermined strength and Another object of the present invention is to provide an electric equipment enclosure case that is light in weight and that can be easily assembled.

[0005]

[Means for Solving the Problems]

 An electric equipment enclosure case according to the present invention comprises a box body having a bottom surface and four side walls for accommodating and arranging electric equipment, and a lid body fitted to close the opening of the box body. The lid has at least a pair of holding pieces for holding each of the four side walls by external fitting in the vicinity of the opening of the box, and the holding direction of the side wall by the holding pieces is A positioning piece extending in a substantially parallel direction is provided, and the box body guides the positioning piece when the lid body is fitted to the box body and moves the lid body in a direction substantially perpendicular to the holding direction. It is characterized by having a notched groove to regulate.

[0006]

[Action]

 After storing and arranging electrical equipment in a box with an open top surface, when installing a lid to close the opening, fit the upper end of each of the four side walls of the box with a holding piece provided on the lid. It is held by joining. Therefore, as compared with the conventional case where the both are connected by the screw means, the both are more firmly connected, and a predetermined strength can be secured as the housing even if the plate is made thin.

Further, when the lid is fitted, if the holding piece in only one direction (for example, the Y direction) and the side wall held by the holding piece are only aligned, the holding piece in the other direction (for example, the X direction) is held. There is a case where the position of the piece and the side wall held by it shifts, but a positioning piece provided on the lid body in a direction substantially parallel to one holding direction (for example, the Y direction) is provided on the box body. Not only is it guided by the notch groove, but its movement in the other holding direction (for example, the X direction) is restricted, so it is easy to perform only by aligning the holding piece in one direction with the side wall held by it. The lid can be fitted and coupled.

[0008]

【Example】

 Hereinafter, an embodiment of an electric equipment enclosure case according to the present invention will be described with reference to the drawings. FIG. 2 is a perspective view showing the external appearance of the lid 20 and the box 10 that form the electrical equipment surrounding case according to the present embodiment before they are fitted together. As shown in the figure, the box body 10 is made by cutting a metal plate having a thickness of 0.5 mm to 0.6 mm, which is cut into a substantially cross shape, and bending up the four sides (in the Z direction) to stand up to form the side walls 10a and 10b. Further, the side walls 10b are provided with connecting pieces 10c, and the adjacent side walls are fixed at the four corners by means such as caulking or spot welding 10g. As a result, the box body 10 has high rigidity in the rising direction of the side wall (Z direction) and in the direction perpendicular to the side wall surface (X, Y direction), and sufficient strength is secured.

Further, at the upper ends of the four side walls, a sandwiched portion 10d is formed by displacing the side wall surface inward by press molding or the like. Further, each of the held portions 10d is provided with two protruding portions 10e formed so as to protrude inside the box body by hitting with a punch or the like (FIG. 3 (c)). reference). At the center of the held portion 10d located at the upper end of one side wall, a part of the portion is cut down substantially horizontally toward the inside of the box, and when the lid is erroneously fitted, the inside of the box is closed. A stopper piece 10h is formed as an extending portion for preventing the falling. If a plurality of stopper pieces are provided, the effect of preventing the depression is more effective, but it is sufficient to provide the stopper pieces at one place as in the present embodiment. Furthermore, a cutout groove 10f having a width of about 1.0 to 1.5 mm and extending downward is formed at both ends of the held portion 10d. A corner R portion 10 i is formed at the open end of the cutout groove 10 f.

On the other hand, with respect to the lid body 20, a metal plate having a plate thickness of 0.5 mm to 0.6 mm, which is similar to the box body, is cut into a substantially square shape, and bent portions 21 extending downward in the Z direction are provided at four end portions thereof. Two pairs of holding pieces (an outer holding piece 21a and an inner holding piece 21b) for holding the side wall of the box body by external fitting are formed in two sets each. In addition, one of the four bent portions (the bent portion on the front side in the middle of FIG. 2 (a)) is bent toward the inside of the lid body at both ends in the direction perpendicular to the surface of the bent portion (Y direction). There is provided a positioning piece 21d that extends toward, that is, parallel to, the holding direction of the held portion by the pair of holding pieces.

When the lid body 20 is assembled to close the box body 10, the positioning piece 21d is guided to the notch groove 10f provided in the box body 10 so that the positioning piece 21d is perpendicular to the holding direction (X direction). ), Which prevents the lid body 20 from being displaced. The positioning piece 21d and the cutout groove 10f for guiding the positioning piece 21d are provided at two positions to form two sets of positioning means. However, even one set can sufficiently perform the positioning operation.

FIG. 3 shows a normal fitting state in which the box body 10 and the lid body 20 having the above-described configuration are fitted and coupled to each other to form one body. FIG. 3 (a) is a plan view of the case in such a fitted state, and FIGS. 3 (b) and 3 (c) are partially enlarged sectional views taken along the lines AA and BB in FIG. 3A. Is shown. As shown in FIG. 3 (a), on each of the four side surfaces of the case, there are two holding parts for connecting the holding pieces 21a and 21b of the lid body 20 to the held portion 10d of the box body 10 by external fitting. They are provided in pairs.

The region shown in FIG. 3B is not a holding fit relationship, but is a portion where the lid body 20 is simply fitted onto the box body 10, and the two are in a closely joined state. The area shown in FIG. 3 (c) is a holding and connecting portion, which is one of the features of the present invention, and the held portion 10d of the box is closely contacted by the outer holding piece 21a and the inner holding piece 21b of the lid. It is in a state of being held. Further, in this state, the projecting portion 10e provided on the held portion 10d is engaged with the coupling hole 21c provided on the inner holding piece 21b, thereby preventing the positional displacement between the two and further strengthening the coupled state. I am supposed to.

FIG. 4 shows a sectional view of the entire enclosing case according to the present embodiment. FIG. 4 (a) is a sectional view taken along the line CC of FIG. 3 (a), and FIG. ) Is a sectional view taken along the line D-D in FIG. Next, a procedure for assembling the above-described lid body and box body according to the present embodiment to form an electric equipment surrounding case will be described.

First, in the internal space of the box body 10, the box body itself is used as a chassis, or a separate chassis member is fixed inside, and various electric parts and the like are mounted. When the mounting of the components is completed, the lid is assembled in the next step so as to close the opening of the box. When assembling this lid, first of all, the holding pieces 21a, 21b formed at one of the bent portions provided on all four sides of the lid (shown in FIG. 2 (a)) and the four sides of the box The positioning piece 21d (provided at the left end of the holding piece 21a, paying attention to the alignment with the held portion 10d (shown in FIG. 2B) of one of the held portions provided in the 2 (a) (shown in FIG. 2 (a)) is fitted so as to be guided into the notch groove 10f (shown in FIG. 2 (b)) provided in the box body, and it can be securely and easily fitted without deviation. Can be assembled into

It should be noted that since the corner R portion 10i is provided at the opening end of the notch groove 10f, the positioning piece 21d can be guided more easily, and as shown in FIG. 3 (c). As described above, since the end portion of the inner holding piece 21b is formed in a divergent shape, the guided portion 10d can be more easily guided. As is clear from the above description, when assembling the lid, it is not necessary to pay attention to the fitting positions on all four sides, and the fitting positions on only one side, that is, the holding pieces 21a, 21b and the held portion 10d. The lid can be easily assembled by only setting the viewpoint to the positional relationship between the lid and the positioning piece 21d and the notch groove 10f.

Further, as a means for connecting the lid body and the box body, a pair of holding pieces 21a and 21b and a held portion 10d are used as a fitting and holding method, and a protruding portion 10e and an engaging hole 21c are used as a concave and convex engaging method. As a result, it is possible to secure the workability such that they can be joined by one-touch operation, and the rigidity is improved in the joint state of the two in terms of strength.

FIG. 5 is a cross-sectional view for explaining the action of the stopper piece 10h, and as shown in the drawing, even if the lid 20 is misaligned due to incorrect fitting, The end portion (for example, the outer holding piece 21a) abuts the upper surface of the stopper 10h to prevent the end portion from falling into the box body.

[0019]

[Effect of device]

 As described above, according to the electric equipment enclosure case of the present invention, at least a pair of holding pieces (21a, 21b) are provided on each of the four sides of the lid body and are located at the upper ends of the four side walls of the box body. A fitting and coupling method of holding the held portion (10d) by external fitting is adopted, and a positioning piece (21d) extending substantially parallel to the holding direction by the holding piece and a notch groove (10f) for guiding the same. ) Is provided, even if the thickness of the sheet metal forming the case is reduced, the assembly work can be easily performed without lowering the strength (rigidity) of the case.

That is, it is possible to achieve the weight reduction of the entire case, the workability when assembling the lid, and the rigidity of the case, all at the same time.

[Brief description of drawings]

FIG. 1 is an external perspective configuration diagram showing a conventional electric device surrounding case.

FIG. 2 is an external perspective view showing an embodiment of an electric equipment surrounding case according to the present invention.

3A and 3B are diagrams showing a state in which a lid and a box constituting an electric equipment surrounding case according to the present invention are joined by a normal fitting, FIG. 3A being a plan view thereof, and FIG. FIG. 3C is a partially enlarged sectional view taken along the line AA, and FIG. 3C is a partially enlarged sectional view taken along the line BB.

FIG. 4 is a view showing a connection state of an electric equipment surrounding case according to the present invention by normal fitting, FIG. 4 (a) being a sectional view taken along the line CC of FIG. 3 (a), and FIG. 4 (b). FIG. 3 is a sectional view taken along line D-D in FIG.

FIG. 5 shows an electric equipment enclosure case according to the present invention.
It is sectional drawing which shows the operation state of the stopper for preventing lid fall-down when a lid is erroneously fitted.

[Explanation of symbols for main parts]

 10 Boxes 10a, 10b Side walls 10c Coupling piece 10d Clamped part 10e Projection part 10f Notch groove 10h Stopper 10i Corner R part 20 Lid 21 Bent part 21a Outer gripping piece 21b Inner gripping piece 21c Engagement piece 21d

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiro Miyashita 25-1, Nishimachi, Yamada, Kawagoe, Saitama Prefecture 1 Pioneer Co., Ltd. Kawagoe Plant (72) Inventor Hideki Kinoshita 25-1, Nishimachi, Yamada, Kawagoe, Saitama Prefecture Pioneer Co., Ltd. Kawagoe Factory (72) Inventor Katsuya Hosokawa 25-1 Nishimachi, Yamada, Kawagoe City, Saitama Prefecture Pioneer Co., Ltd. Kawagoe Factory (72) Nobuhiro Sekine 25-1 Nishimachi, Yamada, Kawagoe City, Saitama Prefecture Pioneer Co., Ltd. Kawagoe Plant (72) Inventor Junichi Sakurabayashi 25, Nishi-machi, Yamada, Kawagoe City, Saitama Prefecture 1 Pioneer Co., Ltd. Kawagoe Plant

Claims (2)

[Scope of utility model registration request] 1. An electric equipment enclosure case comprising a box body having a bottom surface and four side walls for accommodating and arranging electric equipment and the like, and a lid body fitted to close the opening of the box body. The lid has at least a pair of holding pieces for holding each of the four side walls by external fitting near the opening of the box, and extends in a direction substantially parallel to the holding direction of the side wall by the holding pieces. The box body has a protruding piece, and the box body is a notch groove for guiding the positioning piece when the lid body is fitted into the box body and for restricting movement of the lid body in a direction substantially perpendicular to the holding direction. An electric equipment enclosure case characterized by having. 2. The electrical equipment enclosure according to claim 1, further comprising an extension portion extending toward the inside of the box body in substantially parallel to the bottom surface of the box body, in the vicinity of the upper end of the side wall of the box body. Case.