Structure for inserting bus bar into enclosure member, and auxiliary member

Abstract

To provide a structure for inserting a bus bar into an enclosure member, which enables the bus bar to be stably inserted into the enclosure member, and an auxiliary member.SOLUTION: A structure 1 for inserting a bus bar into an enclosure member comprises the enclosure member 3 that is formed in a cylindrical shape, and the bus bar 5, the lengthwise end surface of which is formed in a rectangular shape and which is inserted into the enclosure member 3 from the end surface. An auxiliary member 7, which has an outer surface formed in a curved shape so as to become thin toward the front side in the direction of inserting the bus bar 5 into the enclosure member 3, is assembled to an outer periphery on the end surface side of the bus bar 5.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a bus bar insertion structure for an enclosing member and an auxiliary member. [Background technology]

[0002] Conventionally, as a structure in which a conductor member is inserted into a surrounding member, a shielded electric wire in which a shield braid formed in a cylindrical shape is arranged around the outer periphery of the electric wire is known (see Patent Document 1). The shielded electric wire covers the electric wire with a grounded shield braid to prevent the intrusion or leakage of noise and the like into the electric wire that electrically connects electrical components. Meanwhile, in recent years, for example, electric vehicles and hybrid vehicles have been equipped with power sources such as large-capacity rechargeable batteries and batteries to improve driving range, but large-capacity power sources take a long time to charge. Therefore, it has been considered to pass a large current through the electric wire in order to shorten the charging time, but electric wires have problems such as the capacity of the current that can be passed and durability against heat generation, so it has been considered to use a bus bar instead of the electric wire. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-53704 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when a bus bar has rectangular end faces in the longitudinal direction and edged corners, the end faces can get caught on the surrounding member, potentially causing the bus bar to be misaligned in the surrounding member or damaging the surrounding member.

[0005] The present invention has been made in view of the problems inherent in the conventional art, and an object of the present invention is to provide a bus bar insertion structure for a surrounding member, and an auxiliary member, which enable a bus bar to be stably inserted into the surrounding member. [Means for solving the problem]

[0006] The bus bar insertion structure for the surrounding member in this embodiment comprises a cylindrical surrounding member and a bus bar whose longitudinal end face is formed rectangular and which is inserted into the surrounding member from the end face, and an auxiliary member whose outer surface is formed in a curved shape is attached to the outer periphery of the end face side of the bus bar so that it tapers toward the front side in the insertion direction of the bus bar into the surrounding member.

[0007] The auxiliary member of this embodiment has a main body portion that is assembled to the outer periphery of the rectangular end face side of the bus bar in the longitudinal direction, and the main body portion has a curved outer surface that tapers outward in the longitudinal direction of the bus bar. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a bus bar insertion structure for a surrounding member and an auxiliary member that allow a bus bar to be stably inserted into the surrounding member. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a side view of a bus bar insertion structure for an enclosing member according to an embodiment of the present invention; [Figure 2] 1 is a side view of the bus bar insertion structure for the enclosing member according to the embodiment, showing a state in which the bus bar is inserted at an angle into the enclosing member. FIG. [Figure 3] 10 is a cross-sectional view of the bus bar insertion structure for the surrounding member according to the embodiment, with an auxiliary member attached to the bus bar. FIG. [Figure 4] 10 is a top view of an auxiliary member of the bus bar insertion structure relative to the surrounding member according to the embodiment. FIG. [Figure 5]10 is a cross-sectional view of the bus bar insertion structure for the surrounding member according to the embodiment, with the elastic member attached to the auxiliary member. FIG. [Figure 6] 10 is a rear view of the bus bar insertion structure for the surrounding member according to the embodiment, with the elastic member attached to the auxiliary member. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] The bus bar insertion structure and auxiliary member according to the present embodiment will be described in detail below with reference to the drawings. Note that the dimensional proportions in the drawings are exaggerated for the sake of convenience and may differ from the actual proportions.

[0011] As shown in Figure 1, in the bus bar insertion structure 1 for the enclosing member of this embodiment, the bus bar 5 is applied to a part that requires a large current, such as a charging connector of a charging facility or a vehicle-side charging section to which a charging connector of an electric vehicle or hybrid vehicle is fitted.

[0012] As shown in FIGS. 1 to 6, the bus bar insertion structure 1 for the surrounding member includes the surrounding member 3, the bus bar 5, and an auxiliary member .

[0013] As shown in FIGS. 1 and 2 , the surrounding member 3 is, for example, a braided shielding member in which multiple core wires made of a conductive material are woven. The surrounding member 3 as a shielding member may also be made of metal foil. The surrounding member 3 is formed in a cylindrical shape so that the bus bar 5 can be placed inside. Both ends of the surrounding member 3 are electrically connected to, for example, the vehicle body or a shield shell electrically connected to the vehicle body and grounded. By being grounded, the surrounding member 3 forms a shield circuit and prevents noise and the like from entering the bus bar 5 or leaking from the bus bar 5. The surrounding member 3 may also be a protective member made of an insulating material that protects the bus bar 5 when the bus bar 5 is transported.

[0014] As shown in FIGS. 1 to 3 , the busbar 5 is formed in a plate shape by covering the outer periphery of a conductor portion (not shown) made of a conductive material such as copper or aluminum with an insulating coating. The length of the busbar 5 is adjusted, for example, by cutting both ends or one end in the longitudinal direction depending on the location where it is to be installed. For this reason, an end face 9 of the busbar 5 in the longitudinal direction is formed in a rectangular shape with four corners. The busbar 5 is inserted into the enclosing member 3 from the end face 9, and the outer periphery is covered by the enclosing member 3. When the busbar 5 is inserted into the enclosing member 3, the end face 9 of the busbar 5 has corners, which may catch on the enclosing member 3, causing the busbar 5 to be positioned incorrectly in the enclosing member 3 or damaging the enclosing member 3. To address this issue, an auxiliary member 7 is attached to the outer periphery of the busbar 5 on the side of the end face 9.

[0015] As shown in FIGS. 1 to 6, the auxiliary member 7 includes a main body 17 made of an insulating material such as synthetic resin. The main body 17 is formed in a cylindrical shape with a bottom that can accommodate the bus bar 5 therein. The main body 17 has a curved outer surface that tapers toward the front side in the insertion direction of the bus bar 5 into the enclosing member 3 (toward the tip end where the bottom is located, or toward the outside in the longitudinal direction of the bus bar 5). The main body 17 is provided with locking protrusions 11 that protrude inward and extend in the width direction. The locking protrusions 11 are provided on both sides of the main body 17 in the height direction (thickness direction of the bus bar 5). An elastic member 13 is accommodated inside the auxiliary member 7.

[0016] As shown in FIGS. 3, 5, and 6, the elastic member 13 is made of an elastic material such as rubber. The elastic member 13 is formed in a rectangular ring shape so that the bus bar 5 can be inserted therein. The space in the elastic member 13 into which the bus bar 5 is inserted is formed smaller than the outer shape of the bus bar 5 so that the space can fit closely to the outer periphery of the bus bar 5. The outer periphery of the elastic member 13 is provided with a plurality of (two in this example) locked portions 15 that can engage with the locking protrusions 11. The locked portions 15 engage with the locking protrusions 11 to maintain the assembly of the elastic member 13 to the auxiliary member 7 (main body 17). The elastic member 13 assembled to the auxiliary member 7 (main body 17) is brought into close contact with the outer periphery of the bus bar 5 by inserting the end face 9 of the bus bar 5 into the interior. The close contact of the elastic member 13 with the bus bar 5 maintains the assembly of the auxiliary member 7 (main body 17) to the bus bar 5. This allows the auxiliary member 7 (main body 17) to be easily attached to and detached from the bus bar 5, improving assembly efficiency. In addition, there is no need to provide a structure for attaching the auxiliary member 7 (main body 17) to the bus bar 5, which does not affect the design of the bus bar 5 and allows the reliability of the electrical connection of the bus bar 5 to be maintained.

[0017] When inserting the bus bar 5 into the enclosing member 3, the auxiliary member 7 (main body 17) attached to the outer periphery of the bus bar 5 on the end face 9 side is inserted first into the enclosing member 3. The auxiliary member 7 (main body 17) is tapered toward the front in the insertion direction (outside the longitudinal direction of the bus bar 5), making it easy to insert into the enclosing member 3. Additionally, as shown in FIG. 2 , the auxiliary member 7 (main body 17) has a curved outer surface. Therefore, even if the bus bar 5 is inserted at an angle relative to the enclosing member 3, the auxiliary member 7 will not get caught on the enclosing member 3. This allows the bus bar 5 to be positioned in the correct position within the enclosing member 3 without damaging the enclosing member 3. Additionally, because the enclosing member 3 is a shielding member, the shielding member is not damaged, allowing a stable shielded circuit to be formed.

[0018] Such a bus bar insertion structure 1 for a surrounding member includes a cylindrical surrounding member 3 and a bus bar 5 having a rectangular end face 9 in the longitudinal direction and inserted into the surrounding member 3 from the end face 9. An auxiliary member 7 having a curved outer surface is attached to the outer periphery of the bus bar 5 on the end face 9 side so as to taper toward the front in the insertion direction of the bus bar 5 into the surrounding member 3.

[0019] The auxiliary member 7 attached to the outer periphery of the bus bar 5 on the end face 9 side is inserted into the enclosing member 3 first when the bus bar 5 is inserted into the enclosing member 3. At this time, the auxiliary member 7 is formed so that it tapers toward the front in the insertion direction, making it easy to insert into the enclosing member 3. In addition, the auxiliary member 7 has a curved outer surface, so it will not get caught on the enclosing member 3. Therefore, the bus bar 5 can be positioned in the correct position in the enclosing member 3 without damaging the enclosing member 3.

[0020] Therefore, in the bus bar insertion structure 1 for such a surrounding member, the bus bar 5 can be inserted into the surrounding member 3 stably.

[0021] Further, an elastically deformable elastic member 13 is attached to the auxiliary member 7. The elastic member 13 is in close contact with the outer periphery of the bus bar 5, and holds the auxiliary member 7 to the bus bar 5.

[0022] This makes it easy to attach and detach the auxiliary member 7 to and from the bus bar 5, improving assembly efficiency. In addition, there is no need to provide a structure for attaching the auxiliary member 7 to the bus bar 5, which does not affect the design of the bus bar 5 and allows the reliability of the electrical connection of the bus bar 5 to be maintained.

[0023] The surrounding member 3 is a shielding member.

[0024] Therefore, auxiliary member 7 does not damage surrounding member 3, which serves as a shielding member, and a shield circuit can be formed stably.

[0025] Moreover, such auxiliary member 7 includes a main body 17 that is attached to the outer periphery of the rectangular end face 9 in the longitudinal direction of the bus bar 5. The outer surface of the main body 17 is formed in a curved shape so that it tapers outward in the longitudinal direction of the bus bar 5.

[0026] When inserting the bus bar 5 into the enclosing member 3, the main body 17 attached to the outer periphery of the end face 9 of the bus bar 5 is inserted first into the enclosing member 3. At this time, the main body 17 is formed so as to taper outward in the longitudinal direction of the bus bar 5, making it easy to insert into the enclosing member 3. In addition, the outer surface of the main body 17 is formed in a curved shape, so that even if the bus bar 5 is inserted at an angle relative to the enclosing member 3, it will not get caught on the enclosing member 3. Therefore, the bus bar 5 can be positioned in the correct position in the enclosing member 3 without damaging the enclosing member 3.

[0027] Therefore, with such auxiliary member 7, bus bar 5 can be inserted into surrounding member 3 stably.

[0028] Further, the main body portion 17 is fitted with an elastically deformable elastic member 13 that is in close contact with the outer periphery of the bus bar 5 and holds the main body portion 17 to the bus bar 5 .

[0029] This allows for easy attachment and detachment of main body 17 to and from bus bar 5, improving assembly efficiency. In addition, there is no need to provide a structure for attaching main body 17 to bus bar 5, which does not affect the design of bus bar 5 and allows the reliability of the electrical connection of bus bar 5 to be maintained.

[0030] Although the present embodiment has been described above, the present embodiment is not limited to this, and various modifications are possible within the scope of the gist of the present embodiment.

[0031] For example, since the surrounding member of the bus bar is a shielding member, the conductor portion is covered with an insulating coating, but this is not limited to this. For example, when the surrounding member is an insulating protective member, the bus bar may be composed of only the conductor portion. [Explanation of symbols]

[0032] 1 Busbar insertion structure for surrounding member 3 Enclosure 5 Bus Bar 7 Auxiliary parts 9 End face 13 Elastic member 17 Main body

Claims

1. a surrounding member formed in a cylindrical shape; a bus bar having a rectangular end face in a longitudinal direction, the bus bar being inserted into the surrounding member from the end face; Equipped with A bus bar insertion structure for a surrounding member, in which an auxiliary member having a curved outer surface is attached to the outer periphery of the end face side of the bus bar so that it becomes thinner toward the front side in the insertion direction of the bus bar into the surrounding member.

2. An elastically deformable elastic member is attached to the auxiliary member, The bus bar insertion structure into the surrounding member according to claim 1 , wherein the elastic member is in close contact with the outer periphery of the bus bar, and holds the auxiliary member on the bus bar.

3. The bus bar insertion structure for a surrounding member according to claim 1 or 2, wherein the surrounding member is a shielding member.

4. a main body portion that is attached to an outer periphery of a rectangular end face side of the bus bar in the longitudinal direction, The main body portion is an auxiliary member having an outer surface formed in a curved shape so as to taper outward in the longitudinal direction of the bus bar.

5. The auxiliary member according to claim 4 , wherein an elastic member that is elastically deformable and abuts tightly against an outer periphery of the bus bar to hold the main body to the bus bar is attached to the main body.

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