JP2022090668A - Electric equipment case - Google Patents

Abstract

To close an opening arising in a case formed by folding one plate material.SOLUTION: A electric equipment case 10 comprises a bottom plate 14, a plurality of side plates 16A, 16B that are bend from the bottom plate 14 and turned in a vertical state, a junction 22 formed by bending the side plate 16A, extending along and being jointed to an inner surface of the 16B adjacent to the side plate 16A, and a case body 11 in which an opening arises at a lower side corner between the side plates 16A, 16B adjacent to each other. A cover member 26 to cover the opening is provided inside of the case body 11, and a sealer 60 is applied to a gap between the cover member 26 and the case body 11.SELECTED DRAWING: Figure 4

Description

The present invention relates to a case for an electric device that requires water stopping performance.

Some cases that house electrical devices such as batteries are required to have water-stopping performance to prevent water from entering the case from the outside. For example, a battery case mounted on a vehicle is required to have water-stopping performance so that the battery contained therein does not come into contact with rainwater or the like.

Patent Document 1 describes a box for storing electrical equipment in which each surface of the box except the front surface is formed of a separate plate member. A bent portion is provided on the peripheral edge of each plate member, and a bent portion of an adjacent plate member is provided. The structure for assembling the box body by adhering them to each other is shown.

Japanese Unexamined Patent Publication No. 2008-12401

There is a case made by bending one plate material in the case for electric equipment. The case includes a bottom plate, a plurality of side plates that are bent and rise from the bottom plate, and a joint that is bent from the side plate and extends along the inner surface of another side plate adjacent to the bottom plate and is joined to the inner surface thereof. An opening is formed in the lower corner between two adjacent side plates. This opening varies greatly depending on the case to be manufactured, and if the opening is large, even if a liquid sealer before solidification is applied to the opening from the inside of the case, the sealer will flow out to the back of the opening, and the opening will be opened. May not be blocked.

An object of the present invention is to close an opening formed in a case formed by bending one plate material so that the water blocking performance of the case can be ensured.

The case for an electric device according to the present invention has a bottom plate, a plurality of side plates that are bent from the bottom plate to stand up, and are bent from the side plates and extend along the inner surface of another side plate adjacent to the bottom plate to the inner surface thereof. A case for electrical equipment including a case body including a joined portion and an opening is formed in a lower corner between two adjacent side plates, wherein the opening is provided inside the case body. A covering member is provided, and a sealer or an adhesive is applied to the gap between the covering member and the case body.

In the case for an electric device of the present invention, the covering member extends from a base portion of the case body in contact with the upper surface of the bottom plate, an abdomen extending diagonally upward from the base portion and covering the opening, and extending from the left and right sides of the abdomen. It has a pair of arms that are folded back and have an outer surface that touches two adjacent sides of the case body, and a tip that extends diagonally upward from the abdomen and touches the corner between the two adjacent sides of the case body. It may be provided with a head and a sealer may be filled around the covering member.

In the case for electrical equipment of the present invention, the covering member is bent so as to be in contact with the surface of the case body around the opening, and includes a covering plate covering the opening, and is between the covering plate and the case body. May be coated with an adhesive so as to surround the opening.

Since the opening is covered with a covering member and the gap between the covering member and the case body is closed with a sealer or an adhesive, the water blocking performance of the case can be ensured.

It is an exploded perspective view of a lower case and an inner case. It is a perspective view which shows the corner part of the case body of an inner case enlarged. It is a perspective view which shows the state which the covering member is arranged in the lower corner of the case body of an inner case. It is a perspective view which shows the state which filled the sealer around the covering member. It is a perspective view which shows the covering member in an enlarged manner. It is a perspective view which shows the state which the covering member was seen from another angle. It is a perspective view which shows the state which the other covering member is arranged in the corner part of the case body of an inner case. It is a perspective view which shows the other covering member in an enlarged manner. It is a figure which shows the development along the AA cross-sectional line of FIG.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. The configuration described below is an example for explanation, and the shape and the like of each member can be appropriately changed without departing from the spirit of the present invention. The same elements are designated by the same reference numerals in all drawings, and duplicate description is omitted.

FIG. 1 is an exploded perspective view of the lower case 12 and the inner case 10. The inner case 10 is a form of a case for an electric device of the present invention. The battery case body is completed by assembling the lower case 12, the inner case 10, and the upper case (not shown) forming the ceiling of the inner case 10. The battery case body contains a battery inside and is mounted on the vehicle, and the battery supplies electric power to an electric motor for driving the vehicle. If rainwater or the like comes into contact with the battery, it may cause corrosion or a short circuit between electrodes, so that the battery case is required to have water-stopping performance.

The lower case 12 functions as a support portion that supports the inner case 10 from below. The lower case 12 includes four frames 32A, 32B, 32C, 32D and a bottom plate 30 arranged under each of the frames 32A to 32D. Each frame 32A to 32D has a closed cross section and is made of aluminum. The bottom plate 30 is also made of aluminum. A frame is formed by joining the frames 32A to 32D, and a bottom plate 30 is joined to the lower surface of the frames 32A to 32D. The lower case 12 does not have a water blocking performance.

The inner case 10 is a case in which water stopping performance is required. The inner case 10 includes a case main body 11, and the case main body 11 is formed by bending a single aluminum plate material. The plate material may be another material such as an aluminum alloy or iron. The case body 11 includes a bottom plate 14 and four side plates 16A, 16B, 16C, 16D that are bent and rise from the bottom plate 14. The inner case 10 is fitted inside the frame of the lower case 12. An adhesive is applied to the upper surface of the bottom plate 30 of the lower case 12, and the lower surface of the bottom plate 14 of the inner case 10 is in contact with the adhesive, so that the inner case 10 and the lower case 12 are bonded to each other.

FIG. 2 is an enlarged view showing a portion surrounded by the alternate long and short dash line in FIG. 1 after the inner case 10 is assembled to the lower case 12. The inner case 10 includes a flange portion 20 formed by being bent outward from the upper end of each side plate 16. Further, the inner case 10 includes a joint portion 22 that is bent from the side plate 16A and extends along the inner surface of another side plate 16B adjacent to the side plate 16A. The joint portion 22 is in close contact with the inner surface of the side plate 16B and is joined to the side plate 16B by spot welding. An adhesive may be applied between the outer surface of the joint portion 22 and the inner surface of the side plate 16B to improve the water blocking performance between them. When the plate material is bent in this way to form the case body 11, an opening 24 is formed in the lower corner between the two adjacent side plates 16A and 16B.

In the inner case 10 of FIG. 1, in addition to the joint portion from the side plate 16A to the side plate 16B, the joint portion from the side plate 16A to the side plate 16D, the joint portion from the side plate 16C to the side plate 16B, and the joint portion from the side plate 16C to the side plate 16D. It has a part. Therefore, the openings 24 as shown in FIG. 2 are formed in the four lower corners of the inner case 10. Hereinafter, the opening 24 in the lower corner between the side plates 16A and 16B will be closed by the covering member, but the other openings will be closed by the covering member in the same manner.

FIG. 3 is a diagram showing a state in which the covering member 26 is arranged in the opening in the lower corner between the side plates 16A and 16B, and FIG. 4 is a diagram showing a state in which the sealer 60 is filled around the covering member 26. Is. Further, FIG. 5 is an enlarged view showing the covering member 26, and FIG. 6 is a view showing a state in which the covering member 26 is viewed from another angle.

As shown in FIG. 5, the covering member 26 has a base 40 in contact with the upper surface of the bottom plate 14 of the case body 11, an abdomen 42 extending diagonally upward from the base 40 and covering the opening 24 of the case body 11, and the abdomen 42. A pair of legs 41 provided on the lower left and right, a pair of arms 46 extending from the upper left and right of the abdomen 42, and an obliquely upward extension from the upper part of the abdomen 42, between two adjacent side surfaces of the case body 11. It comprises a head 48 having a tip 50 in contact with the corner. As shown in FIG. 6, the pair of arms 46 extends from the upper left and right sides of the abdomen 42 and is folded inward, and has an outer surface 52 in contact with two adjacent side surfaces of the case body 11. In the covering member 26, a notch is provided between the abdomen 42 and the pair of legs 41, and these are defined as separate parts. However, by eliminating this notch, the portion of the pair of legs 41 is also included. It may be in the form of an abdomen 42.

As shown in FIG. 3, the covering member 26 is arranged inside the case body 11. The covering member 26 is aligned with the lower corner of the case body 11 by contacting the inner surface of the case body 11 with the base 40 of the covering member 26, the outer surface 52 (see FIG. 6) of the pair of arms 46, and the tip 50. To. Then, as shown in FIG. 4, the sealer 60 is applied around the covering member 26 and in the gap between the covering member 26 and the case body 11. The sealer 60 is liquid at the time of application and solidifies after application.

According to the embodiment described above, the opening 24 formed in the case body 11 of the inner case 10 formed by bending one plate material is covered with the covering member 26, and the gap between the covering member 26 and the case body 11 is sealed. Since it is closed with 60, the water blocking performance on the lower side of the inner case 10 can be ensured. The lower case 12 does not have water blocking performance, but by assembling the inner case 10 to the lower case 12, the lower side of the battery case body has water blocking performance.

A gap between the bent portion of the joint portion 22 of the inner case 10 and the inner corner of the lower case 12 in order to ensure water stoppage in the upper corner between the two adjacent side plates 16A and 16B of the inner case 10. 58 (see FIG. 2) may be filled with a sealer. Further, the upper case (not shown) is adhered to the upper surface of each flange portion 20 of the inner case 10. However, since there is no flange portion 20 of the inner case 10 on the upper side of the joint portion between the frame 32A and the frame 32B of the lower case 12, there is a stepped portion 64 that is one step lower than the upper surfaces of the two flange portions 20A and 20B. It has become. Therefore, it is preferable to fill the step portion 64 with a sealer and then bond the upper case to the upper surface of the sealer together with the upper surface of each flange portion 20.

Next, another covering member will be described. FIG. 7 is a diagram showing a state in which another covering member 26A is arranged at a corner of the case main body 11 of the inner case 10A, and FIG. 8 is an enlarged view showing another covering member 26A. In FIG. 7, the thick broken line indicates the position of the adhesive 62 to be applied between the covering member 26A and the case body 11.

The covering member 26A is in the form of a covering plate that covers the opening 24 (see FIG. 2) in the lower corner of the corner of the case body 11. The covering plate 26A rises from the lower sealing portion 70 in contact with the upper surface of the bottom plate 14 of the case main body 11 and bent from the lower sealing portion 70, and has two intermediate seals in contact with two adjacent side surfaces of the case main body 11. A bulge 74 located between the stop 72,76 and the two intermediate seals 72,76 to accommodate the joint 22 (see FIG. 2) inside, the intermediate seal 72,76 and the bulge. It is provided with an upper sealing portion 78 which is bent from the upper end of the 74 and extends to the upper side of the two flange portions 20A and 20B and is in contact with the upper surface thereof. An adhesive 62 is applied between the covering plate 26A and the case body 11 so as to surround the opening 24.

The upper sealing portion 78 of the covering plate 26A is provided with a protruding portion 80 projecting downward. The protruding portion 80 is provided at a position corresponding to the stepped portion 64 (see FIG. 2) when the covering plate 26A is assembled to the case main body 11. FIG. 9 is a diagram showing a development along the AA cross-sectional line of FIG. 7. As shown in FIG. 9, the protruding portion 80 of the upper sealing portion 78 penetrates into the stepped portion 64. In this embodiment, since the covering plate 26A fills the stepped portion 64 of the case main body 11, it is possible to omit the process of filling the stepped portion 64 with the sealer when assembling the upper case.

Even if the covering plate 26A described above is used, the water blocking performance on the lower side of the inner case 10 can be ensured. The form of the covering plate 26A is not limited as long as the opening 24 at the lower corner of the corner of the case body 11 can be closed. The covering plate 26A is bent so as to be in contact with the surface of the case body 11 around the opening 24, and an adhesive 62 is applied between the covering plate 26A and the case body 11 so as to surround the opening 24. It should be. For example, the upper sealing portion 78 of FIG. 7 may be omitted, the bulging portion 74 may be in contact with the inner surface of the case body 11, and the adhesive 62 may be applied so as to surround the opening 24.

Although the inner case 10 described above is for storing a battery, it may be a case for accommodating an electric device other than the battery.

10,10A inner case (case for electrical equipment), 11 case body, 12 lower case, 14 bottom plate, 16, 16A to 16D side plate, 20, 20A, 20B flange part, 22 joint part, 24 openings, 26 covering members, 26A covering Member (cover plate), 30 bottom plate, 32A to 32D frame, 40 base, 41 pair of legs, 42 abdomen, 46 pair of arms, 48 head, 50 tip, 52 outer surface, 58 gap, 60 sealer, 62 adhesive, 64 Stepped part, 70 Lower sealing part, 72 Intermediate sealing part, 74 Bulging part, 76 Intermediate sealing part, 78 Upper sealing part, 80 Protruding part.

Claims (1)

Includes a bottom plate, a plurality of side plates that are bent and rise from the bottom plate, and a joint that is bent from the side plate and extends along the inner surface of another adjacent side plate and is joined to the inner surface thereof. A case for electrical equipment comprising a case body, wherein an opening is formed in the lower corner between the two mating side plates.
A covering member covering the opening is provided inside the case body.
A sealer or an adhesive is applied to the gap between the covering member and the case body.
A case for electrical equipment that is characterized by that.

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