CN216253431U

CN216253431U - Electrical box and electrical equipment comprising same

Info

Publication number: CN216253431U
Application number: CN202121991922.5U
Authority: CN
Inventors: 王日聪; 杨经良; 钟志成
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-04-08
Anticipated expiration: 2031-08-23

Abstract

The utility model provides an electric box and electric equipment comprising the same, relates to the technical field of electric boxes, and solves the technical problem that the waterproof effect of the electric box is general. The electric box comprises a box body and a box cover which is covered at an opening of the box body, wherein a waterproof edge is arranged at the opening of the box body, a gap is formed between the inner wall of the box cover and the end part of the waterproof edge, and a sealing element is also arranged between the box cover and the waterproof edge; the magnetic shielding part is arranged between the box body and the box cover; the electrical equipment comprises an electrical box. According to the utility model, the rubber pad is designed between the cover plate and the waterproof edge of the electric appliance box, so that the sealing and protecting effects are achieved, the moisture-proof, dust-proof and waterproof grades of the electric appliance box are improved, and the shielding effect of the electric appliance box is improved by arranging the conductive cloth liner; the rubber pad is adhered to the electric appliance box cover by using the 3M back glue, and the conductive cloth pad is adhered to the electric appliance box cover through the conductive glue, so that the positioning can be realized accurately, the processing time and the assembling time are reduced, the assembling, disassembling and maintaining efficiency is improved, the manufacturing cost is low, and the electric appliance box cover is suitable for mass production.

Description

Electrical box and electrical equipment comprising same

Technical Field

The utility model relates to the technical field of electrical boxes, in particular to a waterproof electrical box and electrical equipment comprising the same.

Background

Patent No. CN 202565623U's patent has announced a waterproof electrical apparatus box, including box body and electrical apparatus lid, the electrical apparatus lid mountable is in the opening side of box body, the edge of box body four sides lateral wall is provided with the capillary groove. If water flows to the outside of the electric appliance box, the water flows away along the waterproof groove and cannot enter the inside of the electric appliance box.

Although the electric appliance box has a certain waterproof effect, the waterproof effect is not good, the electromagnetic wave shielding performance is poor, and components and parts are easily interfered by electromagnetism.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a waterproof electrical box and electrical equipment comprising the same, and aims to solve the technical problem that the waterproof effect of the electrical box is general in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides an electrical box which comprises a box body and a box cover, wherein the box cover is covered at an opening of the box body, a waterproof edge is arranged at the opening of the box body, and a sealing element is arranged between the box cover and the waterproof edge.

As a further improvement of the utility model, the sealing element is an annular rubber pad.

As a further improvement of the utility model, the ring width of the rubber pad is smaller than the width of the waterproof edge.

As a further improvement of the utility model, the rubber pad is made of an industrial rubber plate, and the hardness is Shore (A)60 +/-5A.

As a further improvement of the present invention, the sealing member is stuck to the lid.

As a further improvement of the utility model, the sealing element and the box cover are adhered by using 3M glue.

As a further improvement of the utility model, the box also comprises a magnetic shielding piece arranged between the box body and the box cover.

As a further improvement of the present invention, the magnetic shield is disposed side by side with the seal and inside the seal.

As a further improvement of the utility model, the magnetic shielding piece is a conductive cloth liner.

As a further improvement of the utility model, one end of the magnetic shielding piece close to the sealing piece is overlapped on the waterproof edge.

As a further improvement of the utility model, the setting width between the magnetic shielding piece and the waterproof edge is not less than 3 mm.

As a further improvement of the utility model, the thickness of the magnetic shield is greater than the thickness of the seal.

As a further improvement of the present invention, the magnetic shield is attached to the lid by a conductive adhesive.

As a further improvement of the utility model, the surface resistance value of the conductive cloth gasket is not more than 0.3 omega.

As a further improvement of the utility model, the conductive cloth liner comprises a grid pattern conductive cloth positioned on the surface layer and a PU fireproof sponge positioned on the bottom layer.

As a further improvement of the utility model, the box cover edge part extends vertically to form a first folding edge, a gap is formed between the first folding edge and the end part of the waterproof edge, and the height of the first folding edge is greater than the thickness of the sealing element.

As a further improvement of the utility model, the gap between the first folded edge and the waterproof edge is 1.5mm or 0.5 mm.

As a further improvement of the present invention, the first folding edge end portion extends perpendicularly to the box body direction to form a second folding edge.

The utility model provides electrical equipment which comprises the electrical box.

Compared with the prior art, the utility model has the following beneficial effects:

according to the electric appliance box provided by the utility model, the sealing element, namely the rubber pad, is designed between the cover plate and the waterproof edge of the electric appliance box, so that the sealing and protecting effects are achieved, and the moisture-proof, dust-proof and waterproof grades of the electric appliance box are improved.

In the further improved scheme of the electrical box provided by the utility model, the magnetic shielding piece, namely the conductive cloth liner, is arranged between the waterproof edge and the electrical box cover, so that the shielding effect of the electrical box is improved, and the shielding requirements in GJB151B-2013 electromagnetic emission and sensitivity requirements and measurements of military equipment and subsystems are met.

In the further improved scheme of the electrical box provided by the utility model, the rubber pad is adhered to the electrical box cover by using 3M back adhesive, and the conductive cloth liner is provided with conductive adhesive and can be directly adhered to the electrical box cover, so that the positioning can be realized accurately, the processing time and the assembling time are reduced, the dismounting and maintenance efficiency is improved, the manufacturing cost is low, and the electrical box is suitable for mass production products.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of an electrical box of the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the electrical box of the present invention;

FIG. 3 is a schematic view of the electrical box of the present invention in a perspective view from the bottom up;

FIG. 4 is a bottom view of the appliance case of the present invention;

FIG. 5 is a cross-sectional view along AA in FIG. 4;

FIG. 6 is a structural view of a conductive cloth gasket in the electric box of the present invention;

fig. 7 is a schematic structural diagram of an electrical box in the electrical equipment of the present invention.

FIG. 1, box body; 2. a box cover; 21. a first folded edge; 22. a second folded edge; 3. a waterproof edge; 4. a rubber pad; 5. a conductive cloth liner; 51. grid pattern conductive cloth; 52. PU fireproof sponge; 100. an electrical box grounding block; 200. a metal shield joint; 300. an electric appliance box fixing nut; 400. aerial plug; 500. an element board mounting block; 600. an electrical box mounting code; 700. and (5) fixing the wire hook.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

As shown in fig. 1 and 7, the present invention provides an electrical box, which comprises a box body 1 and a box cover 2 covering an opening of the box body 1, wherein a waterproof edge 3 is arranged at the opening of the box body 1, the waterproof edge 3 is a protruding edge structure vertically extending outwards from the top edge of the opening of the box body 1, and a sealing member is further arranged between the box cover 2 and the waterproof edge 3. The box body 1 and the box cover 2 are formed by bending stainless steel plates, corners are welded seamlessly, complete sealing is guaranteed, and a good electromagnetic shielding effect is achieved.

As shown in fig. 1, 2 and 5, by arranging the waterproof edge 3 and arranging the sealing member between the waterproof edge 3 and the box cover 2, the double waterproof effect is realized, the sealing protection effect of the electric box is improved, and the moisture-proof, dust-proof and waterproof grades of the electric box are improved.

As an alternative embodiment of the utility model, shown in fig. 3 and 4, the sealing element is an annular rubber gasket 4. The rubber pad 4 is a circular ring or square ring structure, based on the shape of the box cover 2.

As shown in fig. 1 and 2, further, the width of the rubber pad 4 is smaller than that of the waterproof rim 3.

Specifically, for example, the width of the waterproof rim 3 is 14mm or more, and the ring width of the rubber pad 4 is 11mm or more.

Furthermore, the rubber pad 4 is made of an industrial rubber plate, the hardness is Shore (A)60 +/-5A, the special laser machine is used for blanking and forming, the protection grade requirement of the electrical box IP55 is met, the raw materials are cheap, the processing technology is simple, and the cost is low.

As an alternative embodiment of the present invention, as shown in fig. 5, the sealing member is adhered to the cap 2.

Specifically, the sealing element and the box cover 2 are adhered by using 3M glue.

As an alternative embodiment of the utility model, the magnetic shielding box further comprises a magnetic shielding piece arranged between the box body 1 and the box cover 2.

Specifically, in the present embodiment, the magnetic shield is disposed side by side with the sealing member and is located inside the sealing member. And the magnetic shielding piece is also of an annular structure, particularly a circular ring or a square ring, and is determined according to the shape of the sealing piece or the box body 1.

As an alternative embodiment of the utility model, the magnetic shield is a conductive cloth liner 5.

Further, one end of the magnetic shielding piece close to the sealing piece is arranged on the waterproof edge 3. That is, the conductive cloth pad 5 needs to have a certain contact area with the waterproof rim 3.

It should be noted that the width of the installation between the magnetic shielding member and the waterproof rim 3 is not less than 3mm, that is, the width of the waterproof rim 3 is 14mm, and the width of the contact area between the conductive cloth pad 5 and the waterproof rim 3 is at least 3mm, so the ring width of the rubber pad 4 is at most 11mm, and the end of the rubber pad 4 is flush with the end of the waterproof rim 3.

Specifically, in this embodiment, the thickness of the magnetic shield is greater than the thickness of the seal.

The width of the waterproof edge 3 and the rubber pad 4 can be designed according to the specific metal plate machining process, but the contact distance between the conductive cloth gasket 5 and the waterproof edge 3 is ensured to be more than 3mm, the thickness of the rubber pad 4 is thinner than that of the conductive cloth gasket 5, and the conductive cloth gasket 5 can be ensured to be conducted with the box cover 2 and the electric appliance box body 1 to form a closed space. The incoming and outgoing lines of the electrical box are butted by adopting the metal shielding joint 200 and the aviation plug 400, so that the protection grade of the electrical box is improved, and a good shielding effect is ensured.

Further, the magnetic shielding piece is adhered to the box cover 2 through conductive adhesive.

Further, the surface resistance of the conductive cloth pad 5 is not more than 0.3 Ω.

As shown in fig. 6, further, the conductive cloth pad 5 includes a grid-patterned conductive cloth 51 on the surface layer and a PU fireproof sponge 52 on the bottom layer. Wherein, the surface resistance of the corrugated conductive cloth 51 is not more than 0.3 Ω. The conductive adhesive is coated on the surface of the PU fireproof sponge 52.

The conductive cloth liner 5 is provided with conductive adhesive on one side, the surface resistance value is not more than 0.3 omega, and when the frequency change rate changes from 20MHZ to 10GHZ, the shielding effect of the PU fireproof sponge 52 is in the area of 160mmX10mm, and the average decibel born by the conductive cloth liner is 120 db.

As an alternative embodiment of the present invention, as shown in fig. 1, the section of the box cover 2 is C-shaped, and has a first folded edge 21 and a second folded edge 22, the first folded edge 21 is formed by extending the box cover 2 vertically downwards, and the second folded edge 22 is formed by extending the end of the first folded edge 21 vertically towards the box body 1; a gap is reserved between the first folding edge 21 and the end part of the waterproof edge 3, and the height of the first folding edge 21 is larger than the thickness of the sealing piece. The hem design of lid has played the effect of drainage, and the rainwater just directly flows down along the hem when falling 2 tops of electrical apparatus box lid.

As another alternative embodiment of the present invention, as shown in fig. 2, the end of the box cover 2 extends vertically downwards to form a first folded edge 21, a gap is formed between the first folded edge 21 and the end of the waterproof edge 3, and the height of the first folded edge 21 is greater than the thickness of the sealing member. The hem design of lid has played the effect of drainage, and the rainwater just directly flows down along the hem when falling 2 tops of electrical apparatus box lid.

Further, in both embodiments, the box cover 2 has a square structure, and the first folding edges 21 are disposed at three sides of the box cover 2.

Specifically, the gap between the first folded edge 21 and the waterproof edge 3 is 1.5mm or 0.5 mm.

Through the structural design, the utility model provides the electrical box which can meet the rain requirement in GJB 1913A-2006, the protection level reaches IP55, and the electromagnetic compatibility meets the test requirement in GJB151B-2013 military equipment and subsystem electromagnetic emission and sensitivity requirements and measurement.

The utility model also provides electrical equipment which comprises the electrical box. The electric box is an electric box with higher protection grade and good shielding effect.

Further, the electrical box further comprises an electrical box grounding block 100, a metal shielding joint 200, an electrical box fixing nut 300, an aerial plug 400, an element plate mounting block 500, an electrical box mounting code 600 and a wire fixing hook 700.

When the protection grade of the electrical box provided by the utility model is tested according to the method specified in GJB 150.8-1986 and the environmental conditions specified in 3.6.6 in GJB 1913A-2006, the test is passed.

The shielding meets the shielding requirement of GJB151B-2013 electromagnetic emission and sensitivity requirement and measurement of military equipment and subsystems.

It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in fig. 1 to facilitate the description of the utility model and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. An electrical box comprises a box body and a box cover arranged at an opening of the box body in a covering mode, and is characterized in that a waterproof edge is arranged at the opening of the box body and is a convex edge structure formed by vertically and outwardly extending from the top edge of the opening of the box body; and a sealing element is also arranged between the box cover and the waterproof edge.

2. The appliance cartridge of claim 1, wherein the seal is an annular rubber gasket.

3. The appliance box of claim 2, wherein the rubber gasket has a loop width less than the waterproof rim width.

4. The electrical box of claim 2, wherein the rubber pad is made of an industrial rubber sheet with a hardness of shore 60 ± 5A.

5. The appliance cartridge of claim 1, wherein the seal is affixed to the cartridge cover.

6. The appliance box of claim 5, wherein the sealing member is adhered to the box cover by a 3M adhesive.

7. The appliance casing according to any one of claims 1 to 6, further comprising a magnetic shield disposed between the casing and the lid.

8. The appliance box according to claim 7, wherein the magnetic shield is positioned alongside the seal and inside the seal.

9. The appliance casing of claim 8, wherein the magnetic shield is a conductive cloth liner.

10. The appliance box of claim 7, wherein the magnetic shield overlaps the waterproof rim proximate an end of the seal.

11. The electrical box of claim 10, wherein the width of the bridge between the magnetic shield and the waterproof rim is not less than 3 mm.

12. The appliance box of claim 7, wherein the magnetic shield thickness is greater than the seal thickness.

13. The appliance box according to claim 7, wherein the magnetic shield is affixed to the box cover by a conductive adhesive.

14. The appliance box of claim 9, wherein the conductive fabric liner has a surface resistance of no greater than 0.3 Ω.

15. The appliance box according to claim 9, wherein the conductive cloth liner comprises a corrugated conductive cloth on a surface layer and a PU fire sponge on a bottom layer.

16. The appliance box of claim 1, wherein the box cover edge extends vertically to form a first flap, a gap is formed between the first flap and the waterproof edge, and the first flap is greater in height than the thickness of the sealing member.

17. The appliance cartridge of claim 16, wherein the gap between the first flap and the waterproof rim is 1.5mm or 0.5 mm.

18. The appliance casing of claim 16, wherein the first folded end extends perpendicularly to the casing to form a second folded edge.

19. An electrical appliance comprising an appliance cartridge as claimed in any one of claims 1 to 18.