KR20240109788A - Vehicle power supply connector - Google Patents

Abstract

The power supply connector for a vehicle according to an embodiment of the present invention includes a power connection portion that is connected to the charging unit of the vehicle and has a connection portion to which an external power supply unit is coupled; and a cover part that is coupled to one side of the power connection part to open and close and accommodates the connection part inside, wherein the cover part has a cover body forming a communication space on the inside, and the external power supply unit penetrates the cover body. It is formed of a penetrating opening and an elastic partition installed in the opening to partition the communication space from the outside, and the opening is connected to an opposing surface facing the connecting part and a non-opposing surface to the connecting part to provide the external power supply. Regardless of the extension direction, the cover is connected to the power connection in a closed state, improving product convenience and charging stability.

Description

Vehicle power supply connector {Vehicle power supply connector}

The present invention relates to a power supply connector for a vehicle, and more specifically, to a power supply connector that is connected to a vehicle charging unit and supplies power to the outside.

As the importance of environmental issues rises, interest in reducing carbon dioxide emissions grows around the world, and interest in and demand for electric vehicles that are driven by electrical energy through energy storage devices such as batteries, instead of vehicles that use internal combustion engines as driving power, has increased significantly. did.

Electric vehicles use rechargeable batteries and are equipped with a charging inlet that can charge external power to the battery for driving. Battery capacity has recently increased with the development of electric vehicles.

Accordingly, V2L (Vehicle to Load) technology was developed to supply energy stored in the battery of an electric vehicle to external devices, and a vehicle power supply connector was also developed to electrically connect the battery and external devices.

The vehicle power supply connector is connected to the charging inlet of an electric vehicle on one side and to an external outlet on the other side in order to electrically relay the battery and external devices.

At this time, in order to prevent foreign substances or moisture from entering the charging part, the conventional vehicle power supply connector has a cover formed to accommodate the charging part inside, but the cover must be opened during charging by an external cable connected to an external outlet.

However, as the vehicle power supply connector is an external device and is used outside where it is difficult to supply power through normal methods, there is a problem of reduced stability as the charging part is opened during charging. The shape of the external outlet is diverse, so optimized design accordingly. There was a problem that it was difficult.

One embodiment of the present invention was devised to solve the above problems, and improves the convenience and usability of the product by expanding the opening through which the external power supply passes.

The power supply connector for a vehicle according to an embodiment of the present invention includes a power connection portion that is connected to the charging unit of the vehicle and has a connection portion to which an external power supply unit is coupled; and a cover part that is coupled to one side of the power connection part to open and close and accommodates the connection part inside, wherein the cover part has a cover body forming a communication space on the inside, and the external power supply unit penetrates the cover body. It is formed of a penetrating opening and an elastic partition installed in the opening to partition the communication space from the outside, and the opening is connected to an opposing surface facing the connecting part and a non-opposing surface to the connecting part to provide the external power supply. Irrespective of the extension direction of the cover, the cover is connected to the power connection in a closed state.

The cover body may be formed of the opposing surface, a side having a fixing protrusion extending to both sides of the opposing surface and being locked to the power connector, and the non-opposing surface connected to both the opposing surface and the side. , the side surface is elastically deformed around the opening portion so that the fixing protrusion is separated from the power connection portion and the cover portion can be opened.

The open portion may be formed of an opposing open portion that crosses the opposing surface and a non-opposing open portion that crosses a portion of the non-opposing surface, and the fixing protrusions are formed on both sides of the opposing open portion to adjust the elastic strain of the side surface. can be increased.

It is preferable that the cover part further has a reinforcing bus bar embedded in the cover body on one side of the hinge part fastened to the power connection part.

The cover body is formed of an outer body disposed on the outside and an inner body assembled inside the outer body, so that the elastic partition and the reinforcing bus bar can be buried inside the cover body.

The outer body has a guide protrusion that simultaneously penetrates the elastic partition and the reinforcing bus bar to guide the burial position, and penetrates at least one of the elastic partition and the reinforcing bus bar and is inserted through an assembly hole of the inner body. An assembly rib to which the fixing member is fastened may be formed.

The inner body may be formed with a support end on which the outer peripheral surface of at least one of the elastic compartment and the reinforcing bus bar is supported.

As discussed above, various effects including the following can be expected according to the problem-solving means of the present invention. However, the present invention does not require all of the following effects to be achieved.

The power supply connector for a vehicle of the present invention significantly improves stability by expanding the opening part of the cover into an opposing opening part facing the connection part and a non-opposing opening part so that the cover is coupled to the housing while external power parts of various shapes are connected to the connection part. .

In addition, by expanding the opening, the elastic strain on the side of the cover is increased, allowing the user to open and close the cover more easily, thereby improving convenience. At the same time, a reinforcing bus bar is installed on one side of the hinge to ensure durability of the cover.

In addition, the cover body is formed into an external body and an internal body, and an elastic partition and a reinforcing bus bar are installed between the external body and the internal body to facilitate assembly and improve product durability.

1 is a perspective view of a power supply connector for a vehicle according to an embodiment of the present invention.
Figure 2 is a perspective view of Figure 2 in an open state.
Figure 3(a) is a perspective view of the cover part of Figure 2 in another direction, and Figure 3(b) is an exploded perspective view of Figure 3(a).
Figure 4(a) is a perspective view with the inner body removed from Figure 3(a), and Figure 4(b) is a bottom perspective view with the outer body removed from Figure 3(a).
Figure 5 is a cross-sectional perspective view taken in the direction V-V of Figure 3(a).
FIG. 6 is a diagram illustrating a method of releasing the fixing protrusion in a cross-sectional perspective view taken in the direction VI-VI of FIG. 1.
Figures 7(a) and 7(b) are partial perspective views of external power units of various embodiments coupled to the vehicle power supply connector of Figure 1.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, in order not to confuse the gist of the present invention, descriptions of well-known functions or configurations are omitted.

The cover body of the vehicle power supply connector of the present invention has the same shape and is formed of an external body and an internal body that are joined, so that opposing surfaces, sides, non-opposing surfaces, and reinforcement areas are formed on the external body and the internal body, respectively. In order to avoid duplication, each face formed on the external body is referred to as 'first', and each face formed on the internal body is referred to as 'second'. When explained in an integrated manner, the opposing face, side, and ratio are referred to. It shall be referred to as the opposing surface and reinforcement area.

In addition, in the case of integrated explanation, when referring to the opposing surface, side, non-opposing surface, and reinforcement area, no separate symbol is given, and it is defined to mean all of the surfaces formed on the outer body and the inner body.

Figure 1 is a perspective view of a vehicle power supply connector according to an embodiment of the present invention, Figure 2 is a perspective view of the open state of Figure 2, Figure 3(a) is a perspective view of the cover part of Figure 2 in another direction, and Figure 3(b) ) is an exploded perspective view of Figure 3(a), Figure 4(a) is a perspective view with the inner body removed from Figure 3(a), and Figure 4(b) is a perspective view of the outer body removed from Figure 3(a). It is a perspective view of the bottom in an as-built state, and FIG. 5 is a cross-sectional perspective view taken in the V-V direction of FIG. 3(a).

FIG. 6 is a diagram showing a method of releasing the fixing protrusion in a cross-sectional perspective view taken in the direction VI-VI of FIG. 1, and FIGS. 7(a) and 7(b) show an external power supply unit of various embodiments of the vehicle power supply connector of FIG. 1. This is a partial perspective view of the combined state.

Referring to Figures 1 to 7, the vehicle power supply connector 10 of the present invention is connected to the charging part of the vehicle, and the power connection part 100 is formed with a connection part 120 to which the external power supply unit 20 is coupled. It includes a cover part 200 that is coupled to one side of the 100 to open and close and accommodates the connection part 120 inside, and the cover part 200 is a cover body forming a communication space 213 on the inside. 210), an opening 220 through which the external power unit 20 passes through the cover body 210, and an elastic body installed in the opening 220 to partition the communication space 213 from the outside. It is formed as a partition 230, and the open part 220 is connected to an opposing surface facing the connecting part 120 and a non-opposing surface to the connecting part 120, so as to extend in the direction of extension of the external power supply unit 20. Regardless, the cover part 200 is connected to the power connection part 100 in a closed state.

The vehicle power supply connector 10 is connected to a charging unit connected to the vehicle's internal battery to supply electric energy from the battery to the outside, and is generally used when using external devices outdoors.

To this end, the vehicle power supply connector 10 is provided with a power connection part 100 that electrically relays the battery and external devices. The power connection part 100 has an inner part that accommodates electrical components for electrical connection between the battery and external devices. It is formed of a housing 110, a connecting portion 120 through which the external power supply 20 of an external device is connected to one side of the housing 110, and an inlet coupling portion 130 coupled to the charging unit of the vehicle.

In addition, a connection space 111 is formed in the housing 110 so that the external power supply 20 can be connected to the connection part 120, and an extension part 112 extends from one side of the housing 110 to one side of the connection part 120. ) is formed to form a fixed end 113 to which the cover part 200 is coupled so that the connection space 111 can be easily opened and closed.

At this time, the extension part 112 is disposed above the connection part 120 while the power connection part 100 is coupled to the charging part to prevent moisture, etc. from flowing upward while the external power supply part 20 is connected, and the cover It is preferable that the part 200 is opened downward so that the external outlet 21 can be more easily coupled to the connection part 120.

The fixing end 113 is recessed along a portion of the outer circumferential surface of the extension part 112 so that the fixing protrusion 214 formed along the outer circumferential surface of the cover part 200 is inserted and fixed. At this time, the fixing end 113 is It is recessed along the outer peripheral surface of the inner surface of the extension part 112 and is formed on both sides of the housing 110 so that the cover part 200 is stably coupled and simultaneously presses the side of the cover part 200 so that it can be easily separated. do.

The connection portion 120 is formed on one side of the housing 110 to be accommodated in the connection space 111, and a connection portion is formed so that a commonly used external outlet 21 can be coupled thereto. In Korea, a 220V external outlet (21) is generally used, so a corresponding connection part is formed, but the shape of the connection part can be changed as needed, and various external outlets (21) can be combined. It can be formed into complex shapes.

The inlet coupling portion 130 is formed on the other side of the housing 110 and has a shape that is coupled to the charging part (charging inlet) formed in the vehicle, and is electrically connected to the battery through a terminal to receive energy.

The cover part 200 is coupled to one side of the power connection part 100 to open and close, so that the connection space 111 where the connection part 120 is formed is opened and closed so that the external power supply part 20 can be easily coupled to the connection part 120. At the same time, it has a structure that can be coupled to the housing 110 even when the external power supply unit 20 is coupled to the connection part 120, thereby protecting the connection part 120 during storage and providing improved stability that improves product durability.

For this purpose, the cover part 200 includes a cover body 210 that closes the connection space 111, an opening part 220 that penetrates the cover body 210 and penetrates the external power supply unit 20, and an opening part 220. It is formed of an elastic partition 230 that separates the connection space 111 installed in from the external space to protect the connection part 120 from the outside, and at the same time, the cover part while the external power supply unit 20 is coupled to the connection part 120. (200) is capable of being coupled to the housing (110).

At this time, in order to improve the durability of the coupling between the cover part 200 and the housing 110, it is preferable that a reinforcing bus bar 240 embedded in the cover body 210 is further formed on one side of the coupling part.

Specifically, the cover body 210 is formed by combining an outer body 211 formed on the outside while coupled to the housing 110 and an inner body 212 formed on the inside while coupled to the housing 110. And, on the inside, a communication space 213 is formed in communication with the connection space 111, and the external power supply unit 20 is accommodated in a state coupled to the connection part 120.

In addition, a fixing protrusion 214 that protrudes along a portion of the side of the cover body 210 and is caught by the fixed end 113 of the housing 110, and a hinge to which the housing 110 is coupled to open and close the cover portion 200. A branch 215 is further formed.

The external body 211 includes a first opposing surface 2111 disposed to face the connecting portion 120, a pair of first opposing surfaces 2112 formed on both sides of the first opposing surface 2111, and a first opposing surface 2111. A hinge portion 215 is formed of a first non-opposing surface 2113 that is connected to a surface 2111 and a pair of first side surfaces 2112 and is formed not to face the connection part 120, and is connected to the housing 110. ) is formed on one side of the first reinforcement area 2114 in which the non-opposing open portion 222 is not formed, and the inner surface guides the embedding (assembly) position of the elastic partition 230 and the reinforcement bus bar 240. A guide protrusion 2115 and an assembly rib 2116 coupled to the inner body 212 are formed.

At this time, the guide protrusion 2115 penetrates the elastic partition 230 and the reinforcing bus bar 240 at the same time and supports the first guide protrusion 21151 that guides the burial position and one side of the reinforcing bus bar 240. It is formed with a second guide protrusion 21152 that prevents the reinforcing bus bar 240 from being separated from the buried position when the cover part 200 is assembled.

In addition, the assembly rib 2116 is formed to protrude from the first non-opposing surface 2113 and is inserted into the receiving protrusion 2126 through at least one of the elastic partition 230 and the reinforcing bus bar 240, The fixing member 300 inserted through the assembly hole 2127 formed on one side of the receiving protrusion 2126 is fastened to form the outer body 211, the reinforcing bus bar 240, the elastic compartment 230, and the inner body 212. ) are sequentially stacked and assembled into the cover body 210.

At this time, for more stable assembly, a plurality of assembly ribs 2116 may be formed, but if necessary, the fixing member 300 may be coupled to only some of the assembly ribs 2116 to reduce the weight of the cover portion 200. .

The inner body 212 includes a second opposing surface 2121 disposed to face the connecting portion 120, a pair of second side surfaces 2122 formed on both sides of the second opposing surface 2121, and a second opposing surface 2121. A hinge portion 215 is formed of a second non-opposing surface 2123 that is connected to a surface 2121 and a pair of second side surfaces 2122 and is formed not to face the connection part 120, and is connected to the housing 110. ) is formed on one side of the second reinforcement area 2124 in which the non-opposing open portion 222 is not formed, and the outer surface guides the burial (assembly) position of the elastic partition 230 and the reinforcement bus bar 240. A support end 2125 is formed, and a receiving protrusion 2126 coupled to the external body 211 and a reinforcing rib 2128 to supplement the durability of the second reinforcing area 2124 are formed on the inner surface.

In addition, the support end 2125 is recessed to a predetermined depth on the outer surface of the pair of second side surfaces 2122 and the second opposing surface 2121 to support the outer peripheral surface of the elastic compartment 230, and has a receiving protrusion 2126. protrudes from the inner surface of the second opposing surface 2121 to allow the assembly rib 2116 to be inserted inward.

At this time, an assembly hole 2127 is formed on one side of the receiving protrusion 2126, so that the fixing member 300 is inserted from the outside of the receiving protrusion 2126 to the inside of the assembly rib 2116 through the assembly hole 2127 ( 300) is fastened, and the outer body 211 and the inner body 212 are brought into close contact so that the elastic partition 230 and the reinforcing bus bar 240 are stably assembled.

In addition, the reinforcing rib 2128 is formed to protrude from one side of the second reinforcing area 2124, that is, the hinge portion 215, to reinforce the physical durability of the connection portion between the housing 110 and the cover portion 200, and the cover body ( 210) It is preferable that the pair of side surfaces are formed in a direction that intersects the direction of elastic deformation so as not to reduce the elastic deformation rate.

In summary, the cover body 210 has an opposing surface facing the connection portion 120 by combining the external body 211 and the internal body 212, a pair of sides formed on both sides of the opposing surface, and an opposing surface. A communication space 213, that is, a connection, is formed as a non-opposing surface that is connected to the surface and side and is formed not to face the connection part 120, and is distinguished from the outside by the extension part 112 and the connection part 120 of the housing 110. Forms a space 111.

In addition, the reinforcement area defines a part of the cover body 210 formed on one side of the hinge part 215 where the cover part 200 and the housing 110 are connected, and is an area where the reinforcement bus bar 240 is buried. That is, it refers to the area of the non-opposing surface and the pair of sides formed on one side of the hinge portion 215, and the reinforcing bus bar 240 is formed on the inside to form a housing ( 110) and provides elasticity to prevent the durability of the cover part 200 from being deteriorated, which may occur as the pair of side parts are repeatedly deformed for opening and closing the cover part 200.

In addition, the outer body 211 and the inner body 212 have a structure for adjusting the buried position of the elastic partition 230 and the reinforcing bus bar 240 and a structure for combining the outer body 211 and the inner body 212. This improves the assembly workability of the cover body 210.

The fixing protrusion 214 protrudes outward from a portion of the outer peripheral surface of the pair of sides of the cover body 210 and is caught and fixed to the fixing end 113 on the inside of the extension part 112, and is fixed when the side is pressed from both sides. It is separated from the stage 113 so that the cover part 200 is opened and closed.

At this time, a non-opposing opening portion 222 is formed in parallel with the side surface on the non-opposing surface to increase the elastic deformation rate of the side surface, and thus the user can cause the fixing protrusion 214 to separate from the fixing end 113 with less force. However, the elastic restoring force is also improved by the reinforcing bus bar 240 disposed in the reinforcing area formed on the side, so that the fixing force does not deteriorate even when used repeatedly.

The hinge portion 215 protrudes from the non-opposite surface and is coupled to the housing 110 so that the cover portion 200 rotates around the hinge portion 215 to open and close the connection space 111. However, the hinge portion 215 corresponds to an example in which the housing 110 and the cover portion 200 are coupled.

The opening 220 is formed through the cover body 210 so that the external cable 22 connected to the external outlet 21 can pass through when the external outlet 21 is coupled to the connection part 120. The open portion 220 is formed by connecting an opposing open portion 221 penetrating the opposing surface and a non-opposing opening portion 222 penetrating the non-opposing surface.

At this time, the opposing open portion 221 is formed to cross the entire opposing surface to further improve the lateral elastic strain rate, but the non-opposing opening portion 222 is formed only on a portion of the non-opposing surface to form a reinforcement area on one side of the housing. It is desirable to ensure durability of the connection portion between (110) and the cover portion (200).

Accordingly, not only when the external cable 22 of the external power unit 20 extends in a direction parallel to the direction in which the connection part 120 and the external outlet 21 are coupled, but also when the external cable 22 is connected to the connection part 120 and the external outlet 21. Even when the outlet 21 extends in a direction crossing the direction in which it is coupled, the cover part 200 can be coupled to the housing 110 while the external power unit 20 is coupled to the connection part 120, thereby improving user convenience. significantly improves.

In addition, even when external environmental conditions are poor, the connection space 111 can be closed while the external power unit 20 is coupled to the connection part 120, thereby providing electrical connection stability and significantly lowering the possibility of accidents caused by foreign substances. User safety is also improved.

The elastic partition 230 is formed of a buried body 231 disposed between the outer body 211 and the inner body 212, and an elastic portion 232 disposed in the opening portion 220 to form a connection space 111. It partitions from the outside and at the same time allows the external cable 22 to extend to the outside of the connection space 111 through the elastic portion 232.

For this purpose, the embedded body 231 extends from both sides of the elastic portion 232 and is disposed between the first and second opposing surfaces (2111 and 2121) and the first and second non-opposing surfaces (2113 and 2123) to provide elasticity. The portion 232 is stably installed in each of the opposing open portion 221 and the non-opposing open portion 222, and preferably a first through hole 2311 through which the assembly rib 2116 passes is formed and supported. The outer peripheral surface is seated along the stage 2125 to ensure a more robust assembly.

At this time, a seating hole 2312 through which the first guide protrusion 21151 penetrates is further formed to guide the buried position of the elastic compartment 230 so that the worker can more easily assemble the cover portion 200.

The elastic portion 232 has a cut line 2321 cut in the direction of extension of the open portion 220 and a direction transverse to the extension direction of the open portion 220, and a cut line 2321 of the open portion 220 by the cut line 2321. It is formed of an elastic rib 2322 that is elastically deformable in the extension direction and in a direction transverse to the extension direction of the opening portion 220, so that the external cable 22 deforms the elastic rib 2322 to open the connection space 111 to the outside. and divides it so that the external cable 22 can be easily extended to the outside.

At this time, the cut line 2321 allows the elastic rib 2322 to be more easily elastically deformed and provides a space to accommodate a part of the external cable 22, thereby reducing the degree of deformation of the elastic portion 232 to a certain extent, thereby improving durability. Secure.

The reinforcing bus bar 240 has a U-shape so that it is buried in the reinforcing area on the non-opposing surface and the side, thereby improving the durability of the cover part 200 with the expanded open part 220 and at the same time increasing the elastic restoring force.

At this time, the reinforcement bus bar 240 is guided in its buried position by the first and second guide protrusions 21151 and 21152, and a second through hole 241 through which the assembly rib 2116 penetrates is formed to make it more easily and stably. Let it be assembled.

Therefore, the power supply connector 10 for a vehicle of the present invention forms an opening 220 formed of an opposing open part 221 and a non-opposing opening part 222 in the cover part 200 to connect the outside of the external power unit 20. Regardless of the direction in which the outlet 21 and the external cable 22 are connected, the cover part 200 can be coupled to the housing 110, providing improved electrical stability and convenience.

In addition, by expanding the opening portion 220, the elastic strain rate of the cover portion 200 is increased so that the user can easily separate the cover portion 200 from the housing 110, thereby increasing the effect of improving convenience and simultaneously increasing the elastic strain of the cover portion 200. Deterioration in durability that may occur due to the expanded opening 220 having a reinforcement area in which no reinforcement area is formed and a reinforcement bus bar 240 formed inside the reinforcement area may occur due to repetitive elastic deformation of the side. Prevents problems with durability degradation.

In the above, preferred embodiments of the present invention have been described by way of example, but the scope of the present invention is not limited to these specific embodiments, and any appropriate changes that can be made within the scope described in the patent claims are within the scope of protection of the present invention. It applies.

20 External power unit
21 External outlet 22 External cable
10 Vehicle power supply connector
100 Power connection 110 Housing
111 Connection space 112 Extension part
113 fixed end
120 connection 130 inlet connection
200 cover part
210 Cover body 211 External body
2111 1st facing side 2112 1st side
2113 1st non-opposing surface 2114 1st reinforcement area
2115 Guide projection
21151 1st guide projection 21152 2nd guide projection
2116 assembly rib
212 Inner body 2121 Second facing surface
2122 2nd side 2123 2nd non-opposing side
2124 Second reinforcement area
2125 support end 2126 receiving protrusion
2127 Assembly hole 2128 Reinforcement rib
213 communication space 214 fixed protrusion
215 hinge part
220 opening part 221 opposing opening part
222 Non-opposed opening
230 Elastic division 231 Buried body
2311 1st through hole 2312 Seating hole
232 elastic part 2321 incision line
2322 elastic rib
240 Reinforcement bus bar 241 2nd through hole
300 fixing member

Claims (7)

A power connection unit connected to the vehicle's charging unit and formed with a connection unit to which an external power supply unit is coupled; and
It includes a cover part that is coupled to one side of the power connection part to open and close and accommodates the connection part inside,
The cover part
It is formed of a cover body forming a communication space on the inside, an opening through which the external power supply passes through the cover body, and an elastic partition installed in the opening to partition the communication space from the outside,
The opening part is
A power supply connector for a vehicle, characterized in that the opposing surface facing the connecting portion is connected to the connecting portion and the non-opposing surface, and is connected to the power connecting portion in a closed state of the cover portion regardless of the extension direction of the external power supply portion.
According to paragraph 1,
The cover body is
It is formed of the opposing surface, a side on which fixing protrusions are formed that extend to both sides of the opposing surface and are locked to the power connector, and the non-opposing surface is connected to both the opposing surface and the side,
A power supply connector for a vehicle, wherein the side surface is elastically deformed around the opening portion so that the fixing protrusion separates from the power connection portion and opens the cover portion.
According to paragraph 2,
The opening part is
It is formed by an opposing opening portion crossing the opposing surface and a non-opposing opening portion crossing a portion of the non-facing surface,
The fixing protrusion is
A power supply connector for a vehicle, characterized in that it is formed on both sides of the opposing opening to increase the elastic strain of the side.
According to paragraph 1,
The cover part
A power supply connector for a vehicle, characterized in that a reinforcing bus bar embedded in the cover body is further formed on one side of the hinge portion fastened to the power connection portion.
According to paragraph 4,
The cover body is
A power supply connector for a vehicle, characterized in that it is formed of an external body disposed on the outside and an internal body assembled to the inside of the external body, wherein the elastic partition portion and the reinforcing bus bar are buried inside the cover body.
According to clause 5,
The external body is
A guide protrusion that simultaneously penetrates the elastic partition and the reinforcing bus bar to guide the burial position, and a fixing member that penetrates at least one of the elastic partition and the reinforcing bus bar and is inserted through an assembly hole of the inner body are fastened. A power supply connector for a vehicle, characterized in that an assembly rib is formed.
According to clause 5,
The inner body is
A power supply connector for a vehicle, characterized in that a support end is formed to support an outer peripheral surface of at least one of the elastic compartment and the reinforcing bus bar.

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