CN216672296U - Buried electric box and buried power distribution system - Google Patents

Abstract

The utility model discloses a buried electric box and a buried power distribution system, wherein the buried electric box comprises a distribution box and an elastic piece, and the distribution box is provided with a wire outlet; the elastic piece is connected to the outlet of the distribution box, the elastic piece is provided with a through hole, and the through hole is used for the wire of the piece to be supplied to penetrate through and is electrically connected with the distribution box; when the electric wire of the to-be-powered piece enters the distribution box, the elastic piece elastically deforms to enlarge the through hole, and the electric wire of the to-be-powered piece penetrates through the through hole; when the electric wire of the member to be powered is separated from the distribution box, the elastic member is elastically restored to seal the penetration hole. The elastic piece is in a blocking state according to elasticity so as to realize perforation, water or dust is prevented from entering the distribution box, and the waterproof performance and the protection performance of the interior of the distribution box are good. This buried type distribution system is through burying this block terminal in the ground in the great region in spaces such as indoor pedestrian street of commercial, exhibition prefab, this block terminal is buried underground in ground and is realized hiding during daily operation, avoids influencing pedestrian's ambulation, can the rational utilization space.

Description

Buried electric box and buried power distribution system

Technical Field

The utility model relates to the technical field of socket boxes, in particular to a buried electric box and a buried power distribution system.

Background

In commercial buildings, there are more and more regions with larger spaces such as pedestrian streets and exhibition halls in commercial rooms, and the regions are idle in daily operation, and when there is a stall demand, an advertisement demand, a promotion activity and a product display demand, the region can temporarily take electricity. Often, the power consumption is not too great, but is far away from the distribution room. Traditional block terminal sets up to wall hidden type block terminal, can supply to get the electricity temporarily, but the cable draws forth the back from the electronic box, and the cable just reachs the power consumption stand through ground, can influence crowd's walking like this, stumbles the cable and can cause the mechanical injury of electronic box or power consumption point junction even. The buried socket cannot be installed alone in a region with a large space such as an indoor pedestrian street, a convention and exhibition hall, and the like because of insufficient waterproof performance.

SUMMERY OF THE UTILITY MODEL

Because traditional block terminal sets up to wall hidden type block terminal, can supply to get the electricity temporarily, but the cable is followed the electronic box and is drawn forth the back, and the cable just reachs the power consumption stand through ground, can influence crowd's walking like this, trip the cable even and can cause the mechanical injury of electronic box or power consumption point junction. The buried socket cannot be installed alone in a region with a large space such as an indoor pedestrian street, a convention and exhibition hall, and the like because of insufficient waterproof performance. Accordingly, there is a need for a buried electrical box and a buried power distribution system, which can bury a distribution box in the ground and ensure the waterproof effect of the distribution box in a region with a large space such as an indoor pedestrian street and a convention and exhibition hall.

The specific technical scheme is as follows:

on one hand, the application relates to a buried electric box which comprises a distribution box and an elastic piece, wherein the distribution box is provided with a wire outlet; the elastic piece is connected to the outlet of the distribution box, the elastic piece is provided with a through hole, and the through hole is used for the wire of the piece to be supplied to penetrate through and is electrically connected with the distribution box;

when the electric wire of the to-be-powered piece enters the distribution box, the elastic piece elastically deforms to enlarge the through hole, and the electric wire of the to-be-powered piece penetrates through the through hole;

when the electric wire of the member to be powered is detached from the electric distribution box, the elastic member is elastically restored to seal the penetration hole.

Above-mentioned buried formula electronic box is when using, connects the outlet department in the block terminal with the elastic component for when this block terminal is idle, this elastic component is in the shutoff state in order to realize perforating according to elasticity, avoids water or dust to get into in the block terminal, and is good to the inside waterproof performance and the protective properties of block terminal. When the block terminal is in operating condition, the electric wire that will treat the power supply piece is worn to locate the perforation and is connected with the block terminal electricity, and this elastic component can the butt in the outer wall of electric wire according to elasticity, and sealing performance is good, and connection stability is strong, guarantees the water-proof effects of block terminal.

The technical solution is further explained below:

in one embodiment, the electrical box comprises:

the box body is provided with an accommodating cavity and a wire inlet communicated with the accommodating cavity, the socket is arranged in the accommodating cavity, and the wire inlet is used for a cable to penetrate through and is electrically connected with the socket; and

the cover body is connected to the box body in an openable mode so as to open or close the accommodating cavity, the cover body is provided with the wire outlet, and the wire outlet is used for the wire of the to-be-powered part to penetrate through and is electrically connected with the socket.

The distribution box is characterized in that the socket is arranged in the box body, and the wire outlet is arranged on the cover body, so that the connection between the wire of the power supply device to be treated and the socket is facilitated. When the block terminal need during operation, open the lid, will treat that the electric wire of power supply ware wears to locate the perforation to be connected this electric wire and perforation electricity in order to realize treating the power supply of power supply spare, closed with the lid again, make this buried formula electronic box also can bury underground in ground under operating condition, integrated performance is good, simple structure is reasonable.

In one embodiment, the buried electric box further comprises a first waterproof piece and a second waterproof piece, the first waterproof piece is connected to the inner wall of the wire inlet and used for sealing a gap between the cable and the wire inlet, the second waterproof piece is connected to the edge of the cover body connected with the box body or the edge of the box body connected with the cover body, and when the cover body is closed to the box body, the second waterproof piece is used for sealing the gap between the box body and the cover body. Through setting up first waterproof and second waterproof, guarantee this buried electrical box's leakproofness for water can't follow the outside inflow of block terminal, water-proof effects when improving the lid closure.

In one embodiment, the cover body comprises a decorative layer and a supporting layer, the supporting layer is connected to the box body in an openable and closable mode to open or close the accommodating cavity, and the decorative layer is fixedly connected to one end face, far away from the box body, of the supporting layer. The decorative layer is arranged in a ground surface adaptive mode in large-space areas such as a pedestrian street and a exhibition hall in a commercial room, so that when the cover body is closed, the hidden of the buried electric box is realized, the influence on the overall attractiveness of the ground is avoided, the supporting layer is connected with the box body in an openable mode, the supporting stability of the buried electric box is guaranteed, the structure is simple and reasonable, and the use is convenient.

In one embodiment, the tank and the support layer are made of stainless steel. The box body and the supporting layer which are supported by the stainless steel have good supporting stability and strong load bearing capacity.

In one embodiment, the buried electric box further comprises a locking device for locking or unlocking the cover body and the box body. Follow-up managers of being convenient for manage this buried electrical box through setting up locking device, and can guarantee this buried electrical box locking stability when idle state, avoid the lid to open because of receiving external force after.

In one embodiment, the number of the sockets is plural. Follow-up power supply is convenient for through setting up a plurality of sockets, and it is convenient to use.

On the other hand, this application still provides a buried distribution system, including the buried electronic box in above-mentioned arbitrary embodiment, the block terminal is used for burying underground in ground, the top surface of block terminal with ground flushes the setting.

This buried type distribution system is through burying this block terminal in the ground in the great region in spaces such as indoor pedestrian street of commercial, exhibition prefab, this block terminal is buried underground in ground and is realized hiding during daily operation, avoids influencing pedestrian's ambulation, can the rational utilization space. When the block terminal is in operating condition, wear to locate the perforation and be connected with the block terminal electricity with the electric wire of waiting to supply power spare to the realization is waited to supply power spare and is realized getting the electricity temporarily in the great region in spaces such as pedestrian street, exhibition prefab room in the commercial room, and sealing performance is good, and connection stability is strong, can guarantee the water-proof effects of block terminal.

In one embodiment, the buried power distribution system further comprises a to-be-powered piece and a cable configured to be buried in the ground, the cable being electrically connected with the distribution box, and an electric wire of the to-be-powered piece is arranged through the through hole and electrically connected with the distribution box. The cable is buried in the ground, so that mechanical damage to the junction of the electric box or the power utilization point caused by the fact that a pedestrian trips the cable is avoided. The power supply structure is simple and reasonable, the buried electric box and the cable can be buried in large-space areas such as pedestrian streets, exhibition halls and the like in commercial rooms, and the power supply of the part to be supplied is convenient.

In one embodiment, the electrical box comprises:

the box body is provided with an accommodating cavity and a wire inlet communicated with the accommodating cavity, the socket is arranged in the accommodating cavity, and the cable penetrates through the wire inlet and is electrically connected with the socket; and

the cover body is connected to the box body in an openable mode so as to open or close the accommodating cavity, the wire outlet is formed in the cover body, and the electric wire of the to-be-powered piece penetrates through the wire outlet and is electrically connected with the socket.

The cable is arranged at the wire inlet in a penetrating mode and is electrically connected with the socket, and the wire of the part to be powered is arranged at the wire outlet in a penetrating mode and is electrically connected with the socket, so that the overall connection structure of the buried power distribution system is simple and reasonable, the connection stability is high, and the use is convenient.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive labor.

Furthermore, the drawings are not to scale of 1:1, and the relative dimensions of the various elements in the drawings are drawn only by way of example and not necessarily to true scale.

FIG. 1 is a schematic diagram of an overall structure of an embodiment of an underground electrical box;

FIG. 2 is a top view of an embodiment of an underground electrical box;

fig. 3 is a schematic diagram of the overall structure of an embodiment of a buried power distribution system.

Description of reference numerals:

10. a buried electric box; 100. a distribution box; 110. an outlet; 120. a box body; 122. an accommodating chamber; 124. a wire inlet; 130. a socket; 140. a cover body; 142. a decorative layer; 144. a support layer; 200. an elastic member; 210. perforating; 300. a first waterproof member; 400. a second waterproof member; 500. a locking device;

20. a buried power distribution system; 600. an electrical cable.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "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 the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed 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 explicitly specified otherwise.

Referring to fig. 1 and 2, an embodiment of an underground electric box 10 includes an electric distribution box 100 and an elastic member 200, wherein the electric distribution box 100 is provided with an outlet 110; the elastic member 200 is connected to the wire outlet 110 of the distribution box 100, the elastic member 200 is provided with a through hole 210, and the through hole 210 is used for the electric wire of the member to be powered to penetrate and be electrically connected with the distribution box 100;

when the electric wire of the to-be-powered member enters the distribution box 100, the elastic member 200 is elastically deformed to expand the through hole 210, and the electric wire of the to-be-powered member passes through the through hole 210;

when the electrical wires of the power supply are disconnected from the distribution box 100, the elastic member 200 elastically recovers to seal the penetration hole 210.

When the buried electric box 10 is used, the elastic member 200 is connected to the wire outlet 110 in the distribution box 100, so that when the distribution box 100 is idle, the elastic member 200 realizes that the through hole 210 is in a blocking state according to the elastic force, thereby preventing water or dust from entering the distribution box 100, and having good waterproof performance and protection performance for the inside of the distribution box 100. When block terminal 100 is in operating condition, wear to locate perforation 210 and be connected with block terminal 100 electricity with the electric wire of treating the power supply piece, this elastic component 200 can butt in the outer wall of electric wire according to elasticity, and sealing performance is good, and connection stability is strong, guarantees block terminal 100's water-proof effects.

Specifically, the elastic member 200 is an elastic washer, and an outer ring of the elastic member 200 is fixedly connected to an inner wall of the outlet 110. The equipment is convenient, and waterproof performance is good.

Referring to fig. 1-3, in some embodiments, the panelboard 100 includes:

the cable connector comprises a box body 120 and a socket 130, wherein the box body 120 is provided with an accommodating cavity 122 and a wire inlet 124 communicated with the accommodating cavity 122, the socket 130 is arranged in the accommodating cavity 122, and the wire inlet 124 is used for the cable 600 to penetrate through and is electrically connected with the socket 130; and

the cover 140, the cover 140 is connected to the box 120 in an openable manner to open or close the accommodating cavity 122, the cover 140 is provided with an outlet 110, and the outlet 110 is used for a wire of a to-be-powered element to penetrate through and electrically connected to the socket 130.

The distribution box 100 is provided with a socket 130 built in the box body 120, and an outlet 110 opened on the cover 140 to facilitate connection between the electric wire to be supplied and the socket 130. When the distribution box 100 needs to work, the cover body 140 is opened, the wire of the device to be powered penetrates through the through hole 210, the wire is electrically connected with the through hole 210 to realize power supply of the part to be powered, and then the cover body 140 is closed, so that the buried distribution box 10 can be buried on the ground in a working state, the integration performance is good, and the structure is simple and reasonable.

It should be understood that the distribution box 100 in the buried electric box 10 is not provided with a circuit breaker, and does not need to consider the waterproof problem of the circuit breaker, and because the commercial multi-point power consumption is not large, the circuit breaker for protecting the socket 130 is arranged in a strong power room, and has short-circuit protection, overload protection and 30mA leakage protection. The cable 600 is led out through a strong electric room and is buried in the ground, so that the buried electric box 10 can be buried in the ground under the condition that the cable 600 is not exposed out of the ground, the whole structure is simple and reasonable, and the assembly is convenient.

Referring to fig. 1 to 3, in some embodiments, the electrical buried box 10 further includes a first waterproof member 300 and a second waterproof member 400, the first waterproof member 300 is connected to an inner wall of the wire inlet 124, the first waterproof member 300 is used for sealing a gap between the cable 600 and the wire inlet 124, the second waterproof member 400 is connected to an edge of the cover 140 connected to the box body 120 or an edge of the box body 120 connected to the cover 140, and the second waterproof member 400 is used for sealing a gap between the box body 120 and the cover 140 when the cover 140 is closed to the box body 120. By providing the first waterproof member 300 and the second waterproof member 400, the sealing property of the buried electric box 10 is ensured, so that water cannot flow in from the outside of the distribution box 100, and the waterproof effect when the cover body 140 is closed is improved.

Specifically, the first waterproof member 300 and the second waterproof member 400 are both silica gel waterproof gaskets, an outer ring of the first waterproof member 300 is fixedly connected to an inner wall of the wire inlet 124, and an outer ring of the second waterproof member 400 is fixedly connected to an edge of a connection portion of the cover body 140 and the box body 120. When the cable 600 is inserted into the wire inlet 124, the first waterproof member 300 is pressed against the outer wall of the cable 600 by elastic resilience, so as to achieve a good sealing effect. When the cover 140 is closed on the box 120, the second waterproof member 400 is clamped between the cover 140 and the box 120, so that the second waterproof member 400 can seal a connection gap between the cover 140 and the box 120, and the sealing and fastening performance and the waterproof performance are improved.

Referring to fig. 1 to 3, in some embodiments, the cover 140 includes a decorative layer 142 and a supporting layer 144, the supporting layer 144 is openably and closably connected to the case 120 to open or close the accommodating cavity 122, and the decorative layer 142 is fixedly connected to an end surface of the supporting layer 144 away from the case 120. The decoration layer 142 is matched with the ground surface of a large-space area such as a walking street and a convention and exhibition hall in a commercial room, so that when the cover body 140 is closed, the buried electric box 10 is hidden, the whole attractiveness of the ground is prevented from being influenced, the support layer 144 and the box body 120 can be connected in an opening and closing mode, the support stability of the buried electric box 10 is guaranteed, the structure is simple and reasonable, and the use is convenient.

Specifically, the decoration layer 142 is made of ceramic tiles with the same pattern as the ground, and when the cover 140 is closed on the box body 120, the decoration layer 142 is fitted to the ground, so as to hide the buried electric box 10, and the buried electric box has a high space utilization rate, thereby preventing pedestrians from interfering.

Referring to fig. 1-3, in some embodiments, the housing 120 and the support layer 144 are made of stainless steel. The stainless steel supported box body 120 and the supporting layer 144 have good supporting stability and strong load bearing capacity.

Referring to fig. 1, in some embodiments, the electrical buried box 10 further includes a locking device 500, and the locking device 500 is used for locking or unlocking the cover 140 and the box body 120. Through setting up locking device 500, follow-up managers of being convenient for manage this buried electrical box 10, and can guarantee this buried electrical box 10 locking stability when idle state, avoid lid 140 to open because of receiving external force after.

Alternatively, the tightening means may be provided as a lock, snap, pin, etc.

Referring to fig. 1, in some embodiments, the number of the sockets 130 is multiple. The plurality of sockets 130 are arranged, so that subsequent power supply is facilitated, and the use is convenient.

Preferably, the number of the sockets 130 is two, two sockets 130 are fixedly connected to the bottom wall of the accommodating cavity 122, and the cable 600 is inserted into the box body 120 and electrically connected to the two sockets 130, so as to supply power to the two sockets 130.

Referring to fig. 1 to 3, in addition, an embodiment further provides an underground power distribution system 20, including the underground electric box 10 in any of the above embodiments, the electric box 100 is used for being buried in the ground, and the top surface of the electric box 100 is flush with the ground.

This buried power distribution system 20 is buried in the ground in the large-space region such as the pedestrian street and the exhibition hall in the commercial room by burying this distribution box 100, and this distribution box 100 is buried in the ground during daily operation and is realized hiding, avoids influencing the pedestrian and walks about, can make rational use of the space. When block terminal 100 is in operating condition, wear to locate perforation 210 and be connected with block terminal 100 electricity with the electric wire of waiting to supply power piece to the realization is waited to supply power piece and is realized getting the electricity temporarily in the great region in spaces such as indoor pedestrian street of business, exhibition prefab, and sealing performance is good, and connection stability is strong, can guarantee block terminal 100's water-proof effects.

Referring to fig. 1 to 3, in some embodiments, the underground distribution system 20 further includes a to-be-powered member and a cable 600 configured to be buried in the ground, the cable 600 is electrically connected to the distribution box 100, and an electric wire of the to-be-powered member is inserted through the through hole 210 and electrically connected to the distribution box 100. The cable 600 is buried in the ground, so that mechanical damage to an electric box or a power utilization point connection position caused by a pedestrian tripping on the cable 600 is avoided. The power supply structure is simple and reasonable, the buried electric box 10 and the cable 600 can be buried in large-space areas such as pedestrian streets, exhibition halls and the like in commercial rooms, and the power supply of the part to be supplied is convenient.

Referring to fig. 1 to 3, in some embodiments, the distribution box 100 includes:

the box body 120 is provided with an accommodating cavity 122 and a wire inlet 124 communicated with the accommodating cavity 122, the socket 130 is arranged in the accommodating cavity 122, and the cable 600 penetrates through the wire inlet 124 and is electrically connected with the socket 130; and

the cover 140, the cover 140 is connected to the box 120 in an openable manner to open or close the accommodating cavity 122, the cover 140 is provided with an outlet 110, and the electric wire of the power supply member passes through the outlet 110 and is electrically connected to the socket 130.

The cable 600 is inserted into the wire inlet 124 and electrically connected to the socket 130, and the wire of the to-be-powered device is inserted into the wire outlet 110 and electrically connected to the socket 130, so that the overall connection structure of the buried power distribution system 20 is simple and reasonable, the connection stability is high, and the use is convenient.

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 "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above examples only show several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An underground electrical box, comprising:

the distribution box is provided with a wire outlet; and

the elastic piece is connected to the wire outlet in the distribution box, and is provided with a through hole for the wire of the to-be-supplied power piece to penetrate through and to be electrically connected with the distribution box;

when the electric wire of the to-be-powered piece enters the distribution box, the elastic piece elastically deforms to enlarge the through hole, and the electric wire of the to-be-powered piece penetrates through the through hole;

when the electric wire of the member to be powered is detached from the electric distribution box, the elastic member is elastically restored to seal the penetration hole.

2. The buried electrical box of claim 1, wherein the electrical box comprises:

the box body is provided with an accommodating cavity and a wire inlet communicated with the accommodating cavity, the socket is arranged in the accommodating cavity, and the wire inlet is used for a cable to penetrate through and is electrically connected with the socket; and

the cover body is connected to the box body in an openable mode so as to open or close the accommodating cavity, the cover body is provided with the wire outlet, and the wire outlet is used for penetrating a wire of a to-be-powered part and electrically connected with the socket.

3. The underground electrical box of claim 2, further comprising a first waterproof member and a second waterproof member, wherein the first waterproof member is connected to an inner wall of the wire inlet, the first waterproof member is used for sealing a gap between the cable and the wire inlet, the second waterproof member is connected to an edge of the cover body connected to the box body or an edge of the box body connected to the cover body, and when the cover body is closed to the box body, the second waterproof member is used for sealing a gap between the box body and the cover body.

4. The electrical buried box of claim 2, wherein the cover includes a decorative layer and a support layer, the support layer is openably and closably connected to the box body to open or close the receiving cavity, and the decorative layer is fixedly connected to an end face of the support layer away from the box body.

5. An underground electrical box according to claim 4, in which the box body and the supporting layer are made of stainless steel.

6. An underground electrical box according to any one of claims 2 to 5, further comprising locking means for locking or unlocking the cover to or from the box.

7. An underground electrical box according to any one of claims 2 to 5 in which the number of sockets is plural.

8. An underground power distribution system comprising an underground electrical box according to any one of claims 1 to 7, the electrical box being for burying in the ground, the top surface of the electrical box being flush with the ground.

9. The buried power distribution system of claim 8, further comprising a member to be powered and a cable configured to be buried in the ground, the cable being electrically connected to the distribution box, the wire of the member to be powered being threaded through the aperture and electrically connected to the distribution box.

10. The buried power distribution system of claim 9, wherein the power distribution box comprises:

the box body is provided with an accommodating cavity and a wire inlet communicated with the accommodating cavity, the socket is arranged in the accommodating cavity, and the cable penetrates through the wire inlet and is electrically connected with the socket; and

the cover body is connected to the box body in an openable mode so as to open or close the accommodating cavity, the wire outlet is formed in the cover body, and the electric wire of the to-be-powered piece penetrates through the wire outlet and is electrically connected with the socket.

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