Vehicle power supply connector

Abstract

According to one embodiment of the present invention, there is provided a vehicle power supply connector including: a power connection portion that is connected to a charging portion of a vehicle and has a connection portion formed thereon to which an external power supply portion is coupled; and a cover portion that is coupled to one side of the power connection portion in an open / close manner and that houses the connection portion inside. The cover portion is formed of a cover main body that forms a communication space inside, an opening portion that penetrates the cover main body and through which the external power supply portion passes, and an elastic partition portion that is provided in the opening portion and separates the communication space from the outside. The opening portion is formed and connected on an opposing side that faces the connection portion and a side that does not face the connection portion. The cover portion is connected to the power connection portion in a closed state regardless of the extension direction of the external power supply, thereby improving product convenience and charging stability.

Description

[Technical Field]

[0001] The present invention relates to a power supply connector for a vehicle, and more particularly to a power supply connector that is connected to a vehicle charging unit and supplies power to an external device. [Background technology]

[0002] As environmental issues have become more important, and interest in reducing carbon dioxide emissions has grown worldwide, interest in and demand for electric vehicles, which are powered by electrical energy via energy storage devices such as batteries, has increased significantly, replacing vehicles powered by internal combustion engines.

[0003] Electric vehicles use rechargeable batteries and are equipped with charging inlets that allow external power to be charged into the batteries for running the vehicle, and with the recent development of electric vehicles, battery capacities have increased.

[0004] This has led to the development of V2L (Vehicle to Load) technology, which supplies energy stored in the battery of an electric vehicle to an external device, and a vehicle power supply connector has also been developed to electrically connect the battery to an external device.

[0005] The vehicle power supply connector has one side connected to a charging inlet of the electric vehicle and the other side connected to an external outlet in order to electrically connect the battery and an external device.

[0006] In order to prevent foreign objects or moisture from entering the charging part, conventional vehicle power supply connectors have a cover that houses the charging part inside, but the cover must remain open during charging due to the external cable connected to the external outlet.

[0007] However, vehicle power supply connectors are used in external environments where it is difficult to supply power to external devices using conventional methods, which can lead to problems such as reduced stability due to the charging section being open during charging. Additionally, external outlets come in a variety of shapes, making it difficult to design an optimized version to accommodate each. Summary of the Invention [Problem to be solved by the invention]

[0008] One embodiment of the present invention has been devised to solve the above-mentioned problems, and improves the convenience and versatility of the product by widening the opening through which the external power supply passes. [Means for solving the problem]

[0009] In one embodiment of the present invention, a vehicle power supply connector includes a power connection part that is connected to a charging part of a vehicle and has a connection part to which an external power supply part is coupled, and a cover part that is coupled to one side of the power connection part so as to open and close and that houses the connection part inside, wherein the cover part is formed with a cover main body that forms a communication space inside, an opening part that penetrates the cover main body and through which the external power supply part passes, and an elastic partition part that is provided in the opening part and separates the communication space from the outside, and the opening part is formed and connected to an opposing surface that faces the connection part and a surface that does not face the connection part, and the cover part is connected to the power connection part in a closed state regardless of the extension direction of the external power supply part.

[0010] The cover body may be formed from the opposing surface, a side surface on which a fixing protrusion extending on both sides of the opposing surface and fixed to the power supply connection portion is formed, and the non-opposing surface connected to both the opposing surface and the side surface, and the side surface may be elastically deformed around the opening portion, and the fixing protrusion may detach from the power supply connection portion to open the cover portion.

[0011] 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 part of the non-opposing surface, and the fixing protrusion may be formed on both sides of the opposing open portion to increase the elastic deformation rate of the side surface.

[0012] Preferably, the cover further includes a reinforcing bus bar embedded in the cover body on one side of a hinge portion fastened to the power connection portion.

[0013] The cover body may be formed from an outer body disposed on the outside and an inner body assembled to the inside of the outer body, and the elastic compartment and the reinforcing bus bar may be embedded inside the cover body.

[0014] The outer body may be formed with a guide protrusion that penetrates the elastic partition and the reinforcing bus bar simultaneously to guide the embedding position, and an assembly rib that penetrates at least one of the elastic partition and the reinforcing bus bar to fasten a fixing member that is inserted through an assembly hole in the inner body.

[0015] The inner body may be formed with a support end at which an outer circumferential surface of at least one of the elastic compartment portion and the reinforcing bus bar is supported. [Effects of the Invention]

[0016] As explained above, the means for solving the problems of the present invention can be expected to provide various effects, including the following: However, it is not necessary for the present invention to achieve all of the following effects.

[0017] The vehicle power supply connector of the present invention significantly improves stability by expanding the cover's opening into an opposing opening facing the connection part and a non-opposing opening, allowing the cover to be connected to the housing when external power supplies of various shapes are connected to the connection part.

[0018] In addition, the opening is widened to increase the elastic deformation rate of the side of the cover, making it easier for the user to open and close the cover, improving convenience, while a reinforcing bus bar is provided on one side of the hinge portion to ensure the durability of the cover.

[0019] Furthermore, by forming the cover body from an outer body and an inner body, and providing an elastic compartment and a reinforcing bus bar between the outer body and the inner body, assembly is facilitated while improving the durability of the product. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view of a power supply connector for a vehicle according to an embodiment of the present invention; [Figure 2] FIG. 3 is a perspective view of the open state of FIG. 2. [Figure 3] 3(a) is a perspective view of the cover portion of FIG. 2 from another direction, and FIG. 3(b) is an exploded perspective view of FIG. 3(a). [Figure 4] 3(a) is a perspective view of FIG. 3(a) with the inner body removed, and FIG. 3(b) is a bottom perspective view of FIG. 3(a) with the outer body removed. [Figure 5] FIG. 4 is a cross-sectional perspective view taken along the VV direction of FIG. [Figure 6] 6 is a cross-sectional perspective view taken along the line VI-VI in FIG. 1, showing a method for releasing the fixed protrusion. [Figure 7] 2 is a partial perspective view of the vehicle power supply connector of FIG. 1 in a state where external power supply units of various embodiments are connected. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, specific embodiments of the present invention will be described with reference to the drawings, but in order to avoid losing sight of the gist of the present invention, descriptions of well-known functions or configurations will be omitted.

[0022] The cover body of the vehicle power supply connector of the present invention is formed from an outer body and an inner body that have the same shape and are joined together, and therefore the outer body and the inner body each have opposing surfaces, side surfaces, non-opposing surfaces, and reinforcing areas. To avoid duplication of explanation, however, each surface formed on the outer body will be referred to as "first," and each surface formed on the inner body will be referred to as "second," and when describing them collectively, they will be referred to as opposing surfaces, side surfaces, non-opposing surfaces, and reinforcing areas.

[0023] In addition, when describing the surfaces collectively, the opposing surfaces, side surfaces, non-opposing surfaces, and reinforcing regions are defined as referring to all surfaces formed on the outer body and inner body without being given separate symbols.

[0024] FIG. 1 is a perspective view of a vehicle power supply connector according to one embodiment of the present invention, FIG. 2 is a perspective view of the open state of FIG. 2, FIG. 3(a) is a perspective view of the cover part of FIG. 2 from another direction, FIG. 3(b) is an exploded perspective view of FIG. 3(a), FIG. 4(a) is a perspective view of FIG. 3(a) with the inner body removed, FIG. 4(b) is a bottom perspective view of FIG. 3(a) with the outer body removed, and FIG. 5 is a cross-sectional perspective view in the VV direction of FIG. 3(a).

[0025] 6 is a cross-sectional perspective view taken along the line VI-VI in FIG. 1, showing a method for releasing the fixing protrusion, and FIG. 7 is a partial perspective view showing various embodiments of the external power supply unit connected to the vehicle power supply connector in FIG. 1.

[0026] 1 to 7, a vehicle power supply connector (10) of the present invention includes a power connection part (100) that is connected to a charging part of a vehicle and has a connection part (120) to which an external power supply part (20) is connected, and a cover part (200) that is coupled to one side of the power connection part (100) so as to be openable and closable and that houses the connection part (120) therein. The cover part (200) is composed of a cover body (210) that forms a communication space (213) therein, an opening part (220) that penetrates the cover body (210) and through which the external power supply part (20) passes, and an elastic partition part (230) that is provided in the opening part (220) and that partitions the communication space (213) from the outside. The opening part (220) is connected to the power connection part (100) on a surface facing the connection part (120) and a surface not facing the connection part (120). The cover part (200) is connected to the power connection part (100) in a closed state regardless of the extension direction of the external power supply part (20).

[0027] The vehicle power supply connector 10 is connected to a charging section connected to a battery inside the vehicle, and is capable of supplying the battery's electrical energy to the outside, and is generally used when using an external device outside the vehicle.

[0028] For this reason, the vehicle power supply connector 10 is provided with a power connection section 100 that electrically connects the battery and the external device, and the power connection section 100 is formed from a housing 110 that houses electrical components for electrically connecting the battery and the external device inside, a connection section 120 to which the external power supply section 20 of the external device is connected on one side of the housing 110, and an inlet connection section 130 that is connected to the charging section of the vehicle.

[0029] In addition, the housing 110 is formed with a connection space 111 so that the external power supply unit 20 can be connected to the connection unit 120, and an extension unit 112 is formed on one side of the housing 110 and on one side of the connection unit 120, forming a fixed end 113 to which the cover unit 200 is connected, allowing the connection space 111 to be easily opened and closed.

[0030] In this case, it is preferable that the extension portion 112 is positioned above the connection portion 120 when the power supply connection portion 100 is connected to the charging portion, to prevent moisture and the like from entering from above when the external power supply portion 20 is connected, and to open the cover portion 200 downward, so that the external outlet 21 can be more easily connected to the connection portion 120.

[0031] The fixed end 113 is recessed along a portion of the outer circumferential surface of the extension portion 112, and is configured so that a fixing protrusion 214 formed along the outer circumferential surface of the cover portion 200 can be inserted and locked. In this case, the fixed end 113 is recessed along the outer circumferential surface of the inner surface of the extension portion 112, and is formed on both sides of the housing 110, so that the cover portion 200 can be stably coupled, and at the same time, the sides of the cover portion 200 can be pressed at the same time so that it can be easily detached.

[0032] The connection part 120 is formed on one side of the housing 110 so as to be accommodated in the connection space 111, and a connection portion is formed so that a commonly used external outlet 21 can be connected. In the case of Korea, a 220V external outlet 21 is generally used, so a connection portion is formed accordingly, but the shape of the connection portion can be changed as necessary, and may be formed in a composite shape so that various external outlets 21 can be connected.

[0033] The inlet coupling portion 130 is formed on the other side of the housing 110 and has a shape that can be coupled to a charging portion (charging inlet) formed in the vehicle, and is electrically connected to the battery via terminals to receive energy supply.

[0034] The cover part 200 is connected to one side of the power supply connection part 100 so as to be openable and closable, thereby opening and closing the connection space 111 in which the connection part 120 is formed, and allowing the external power supply part 20 to be easily connected to the connection part 120. The cover part 200 has a structure that allows the external power supply part 20 to be connected to the housing 110 even when connected to the connection part 120, thereby protecting the connection part 120 during storage and providing better stability that improves the durability of the product.

[0035] For this reason, the cover part 200 is formed from a cover main body 210 that closes the connection space 111, an opening part 220 through which the external power supply part 20 passes through the cover main body 210, and an elastic partition part 230 that separates the connection space 111 provided in the opening part 220 from the external space, thereby protecting the connection part 120 from the outside and enabling the cover part 200 to be connected to the housing 110 when the external power supply part 20 is connected to the connection part 120.

[0036] At this time, in order to improve the durability of the connection 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 connection portion.

[0037] Specifically, the cover body 210 is formed by combining an external body 211 formed on the outside when coupled to the housing 110 and an internal body 212 formed on the inside when coupled to the housing 110, and a communication space 213 communicating with the connection space 111 is formed on the inside, and the external power supply unit 20 is accommodated in a state coupled to the connection unit 120.

[0038] In addition, a fixing protrusion 214 protruding from a portion of the side of the cover body 210 and engaging and fixing to the fixing end 113 of the housing 110, and a hinge portion 215 to which the housing 110 is connected so that the cover portion 200 can be opened and closed are further formed.

[0039] The outer body 211 is formed from a first opposing surface 2111 arranged opposite the connection portion 120, a pair of first side surfaces 2112 formed on both sides of the first opposing surface 2111, and a first non-opposing surface 2113 connected to the first opposing surface 2111 and the pair of first side surfaces 2112 and formed so as not to oppose the connection portion 120, and a first reinforcing region 2114 in which the non-opposing open portion 222 is not formed is formed on one side of the hinge portion 215 connected to the housing 110, and a guide protrusion 2115 that guides the embedding (assembly) position of the elastic partition portion 230 and the reinforcing bus bar 240, and an assembly rib 2116 that is connected to the inner body 212 are formed on the inner surface.

[0040] In this case, the guide protrusion 2115 is formed of a first guide protrusion 21151 that simultaneously penetrates the elastic partition portion 230 and the reinforcing bus bar 240 to guide the embedded position, and a second guide protrusion 21152 that supports one side of the reinforcing bus bar 240 and prevents the reinforcing bus bar 240 from coming off from the embedded position when the cover portion 200 is assembled.

[0041] In addition, the assembly rib 2116 is formed to protrude from the first non-opposing surface 2113, penetrates at least one of the elastic partition portion 230 and the reinforcing bus bar 240, and is inserted inside the accommodating protrusion 2126, and a fixing member 300 is inserted through an assembly hole 2127 formed on one side of the accommodating protrusion 2126 and fastened thereto, so that the outer body 211, the reinforcing bus bar 240, the elastic partition portion 230, and the inner body 212 are stacked in sequence and assembled into the cover body 210.

[0042] In this case, for more stable assembly, the assembly ribs 2116 may be formed in multiple pieces, but if necessary, the fixing member 300 can be connected to only some of the assembly ribs 2116 to reduce the weight of the cover part 200.

[0043] The inner body 212 is formed of a second opposing surface 2121 arranged opposite the connection portion 120, a pair of second side surfaces 2122 formed on both sides of the second opposing surface 2121, and a second non-opposing surface 2123 connected to the second opposing surface 2121 and the pair of second side surfaces 2122 and formed so as not to oppose the connection portion 120, and a second reinforcing region 2124 in which the non-opposing open portion 222 is not formed is formed on one side of the hinge portion 215 connected to the housing 110, a support end 2125 is formed on the outer surface to guide the embedding (assembly) position of the elastic partition portion 230 and the reinforcing bus bar 240, and an accommodating protrusion 2126 coupled to the outer body 211 and a reinforcing rib 2128 to complement the durability of the second reinforcing region 2124 is formed.

[0044] In addition, the support end 2125 is recessed to a predetermined depth into the pair of second side surfaces 2122 and the outer surface of the second opposing surface 2121 to support the outer surface of the elastic partition portion 230, and the accommodating protrusion 2126 protrudes from the inner surface of the second opposing surface 2121 so that the assembly rib 2116 can be inserted inside.

[0045] At this time, an assembly hole 2127 is formed on one side of the accommodating protrusion 2126, and the fixing member 300 can be fastened to the inside of the assembly rib 2116 from the outside of the accommodating protrusion 2126 through the assembly hole 2127, thereby tightly adhering the outer body 211 and the inner body 212 and stably assembling the elastic partition portion 230 and the reinforcing bus bar 240.

[0046] In addition, the reinforcing rib 2128 is preferably formed to protrude from the second reinforcing region 2124, i.e., one side of the hinge portion 215, and is preferably formed in a direction intersecting the direction in which the pair of side surfaces are elastically deformed so as not to reduce the elastic deformation rate of the cover body 210 while reinforcing the physical durability of the connecting portion between the housing 110 and the cover portion 200.

[0047] In summary, the cover body 210 is formed by combining the outer body 211 and the inner body 212, and is composed of an opposing surface facing the connection portion 120, a pair of side surfaces formed on both sides of the opposing surface, and a non-opposing surface connected to the opposing surface and side surfaces and formed so as not to face the connection portion 120, thereby forming a communication space 213, i.e., a connection space 111, which is separated from the outside by the extension portion 112 of the housing 110 and the connection portion 120.

[0048] The reinforced region defines a portion of cover body 210 formed on one side of hinge portion 215 at which cover portion 200 and housing 110 are connected, and is the region in which reinforcing bus bar 240 is embedded. That is, it refers to the region of the non-opposing surface and pair of side surfaces formed on one side of hinge portion 215, and by embedding reinforcing bus bar 240 inside, it is possible to prevent a decrease in durability of the connection portion with housing 110 that may occur when cover portion 200 is repeatedly opened and closed, and to obtain elasticity that prevents a decrease in durability of cover portion 200 that may occur when the pair of side surfaces are repeatedly deformed due to the opening and closing of cover portion 200.

[0049] In addition, the outer body 211 and the inner body 212 are formed with a structure for adjusting the embedding positions of the elastic partition portion 230 and the reinforcing bus bar 240, and a structure for connecting the outer body 211 and the inner body 212, thereby improving the ease of assembling the cover body 210.

[0050] The fixing protrusions 214 protrude outward from a portion of the outer peripheral surface of a pair of side surfaces of the cover body 210 and are engaged and fixed to the fixing ends 113 inside the extension portions 112. When pressure is applied to the side surfaces from both sides, the fixing protrusions 214 detach from the fixing ends 113, allowing the cover portion 200 to be opened or closed.

[0051] At this time, a non-facing open portion 222 is formed on the non-facing surface alongside the side surface, which increases the elastic deformation rate of the side surface, thereby allowing the user to detach the fixing protrusion 214 from the fixing end 113 with less force. However, the reinforcing bus bar 240 arranged in the reinforcing region formed on the side surface also improves the elastic restoring force, so that the fixing force does not decrease even with repeated use.

[0052] The hinge part 215 protrudes from the opposite surface and is coupled to the housing 110, and the cover part 200 rotates around the hinge part 215, thereby opening and closing the connection space 111. However, the hinge part 215 is merely one example of coupling the housing 110 and the cover part 200.

[0053] The opening portion 220 is formed by penetrating the cover body 210 so that an external cable 22 connected to the external outlet 21 can pass through when the external outlet 21 is connected to the connection portion 120. At this time, the opening portion 220 is formed by connecting an opposing opening portion 221 that penetrates the opposing surface and a non-opposing opening portion 222 that penetrates the non-opposing surface.

[0054] In this case, the opposing open portion 221 is formed across the entire opposing surface, further improving the lateral elastic deformation rate, but the non-opposing open portion 222 is preferably formed only on a part of the non-opposing surface, and a reinforced area is formed on one side to ensure the durability of the connecting portion between the housing 110 and the cover portion 200.

[0055] This allows the cover part 200 to be connected to the housing 110 with the external power supply part 20 connected to the connection part 120 not only when the external cable 22 of the external power supply part 20 extends in a direction parallel to the direction in which the connection part 120 and the external outlet 21 are connected, but also when the external cable 22 extends in a direction intersecting the direction in which the connection part 120 and the external outlet 21 are connected, thereby significantly improving user convenience.

[0056] Furthermore, even when external environmental conditions are poor, the connection space 111 can be closed with the external power supply unit 20 connected to the connection unit 120, thereby providing a stable electrical connection and significantly reducing the possibility of accidents caused by foreign objects, thereby further improving user safety.

[0057] The elastic partition portion 230 is formed from an embedded body 231 arranged between the outer body 211 and the inner body 212, and an elastic portion 232 arranged in the open portion 220, and separates the connection space 111 from the outside and allows the external cable 22 to extend outward from the connection space 111 via the elastic portion 232.

[0058] For this reason, the embedded body 231 extends from both sides of the elastic part 232 and is positioned between the first and second opposing surfaces 2111, 2121 and the first and second non-opposing surfaces 2113, 2123, so that the elastic part 232 is stably provided in each of the opposing open part 221 and the non-opposing open part 222, and preferably has a first through hole 2311 formed therein through which the assembly rib 2116 passes, and the outer peripheral surface is placed along the support end 2125, thereby enabling more solid assembly.

[0059] At this time, a mounting hole 2312 through which the first guide protrusion 21151 passes is further formed, guiding the embedding position of the elastic partition part 230, and allowing the worker to assemble the cover part 200 more easily.

[0060] The elastic portion 232 is formed from a cut line 2321 cut in the extension direction of the open portion 220 and in a direction transverse to the extension direction of the open portion 220, and an elastic rib 2322 formed by the cut line 2321 so as to be elastically deformable in the extension direction of the open portion 220 and in a direction transverse to the extension direction of the open portion 220, and the external cable 22 deforms the elastic rib 2322 to separate the connection space 111 from the outside, while allowing the external cable 22 to easily extend to the outside.

[0061] At this time, the cut lines 2321 allow the elastic ribs 2322 to be more easily elastically deformed, and also provide a space for accommodating a part of the external cable 22, thereby reducing the degree of deformation of the elastic portion 232 to a certain extent and ensuring durability.

[0062] The reinforcing bus bar 240 has a U-shape so as to be embedded in the reinforced areas of the non-opposing surface and the side surface, and improves the durability of the cover part 200 with the expanded opening part 220, and also increases the elastic restoring force.

[0063] At this time, the embedding position of the reinforcing bus bar 240 is guided by the first and second guide protrusions 21151 and 21152, and the second through-hole 241 through which the assembly rib 2116 passes is formed, making the assembly easier and more stable.

[0064] Therefore, the vehicle power supply connector 10 of the present invention has an opening 220 formed in the cover 200, which is composed of an opposing opening 221 and a non-opposing opening 222, and the cover 200 can be connected to the housing 110 regardless of the direction in which the external outlet 21 of the external power supply unit 20 and the external cable 22 are connected, thereby providing improved electrical stability and convenience.

[0065] In addition, by expanding the opening 220, the elastic deformation rate of the cover part 200 is increased, allowing the user to easily separate the cover part 200 from the housing 110, thereby enhancing the effect of improving convenience. In addition, by providing a reinforced area where the opening 220 is not formed and a reinforcing bus bar 240 formed inside the reinforced area, problems of reduced durability that may occur due to the expanded opening 220 and the repeated elastic deformation of the side surfaces are prevented.

[0066] Although the preferred embodiments of the present invention have been described above as examples, the scope of the present invention is not limited to such specific embodiments, and any appropriate modifications within the scope of the claims fall within the scope of protection of the invention.

Claims

1. a power supply connector connected to a charging unit of the vehicle and having a connector to which an external power supply is coupled; a cover portion coupled to one side of the power supply connection portion so as to open and close, and accommodating the connection portion therein; The cover portion is the cover is formed of a cover body that forms a communication space inside, an opening that penetrates the cover body and through which the external power supply unit passes, and an elastic partition that is provided in the opening and that partitions the communication space from the outside, The opening is a power supply connector for a vehicle, characterized in that an opposing surface facing the connection portion and a surface not facing the connection portion are connected to each other, and the cover portion is connected to the power supply connection portion in a closed state regardless of the extension direction of the external power supply unit.

2. The cover body is the facing surface, a side surface on which a fixing protrusion extending from both sides of the facing surface and fixed to the power supply connection portion is formed, and the non-facing surface connected to both the facing surface and the side surface, 2. The vehicle power supply connector according to claim 1, wherein the side surface is elastically deformed around the opening, and the fixing protrusion is released from the power supply connection portion to open the cover portion.

3. The opening is The opening is formed by an opposing open portion that crosses the opposing surface and a non-opposing open portion that crosses a part of the non-opposing surface, The fixing protrusion is The vehicle power supply connector according to claim 2, wherein the openings are formed on both sides of the opposing openings to increase the elastic deformation rate of the side surfaces.

4. The cover portion is 2. The power supply connector for a vehicle according to claim 1, further comprising a reinforcing bus bar embedded in the cover body on one side of the hinge portion fastened to the power connection portion.

5. The cover body is 5. The vehicle power supply connector according to claim 4, wherein the connector is formed of an outer body disposed on the outside and an inner body assembled inside the outer body, and the elastic compartment and the reinforcing bus bar are embedded inside the cover body.

6. The outer body comprises:

6. The vehicle power supply connector according to claim 5, further comprising: a guide protrusion that penetrates the elastic partition portion and the reinforcing bus bar simultaneously to guide the embedding position; and an assembly rib that penetrates at least one of the elastic partition portion and the reinforcing bus bar and to which a fixing member that is inserted through an assembly hole in the inner body is fastened.

7. The inner body comprises: The vehicle power supply connector according to claim 5, further comprising a support end that supports an outer circumferential surface of at least one of the elastic partition portion and the reinforcing bus bar.

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