JPH1167184A - Bus bar for connection between batteries - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bus bar which prevents extrusion of strands of a flexible connection part from a terminal part, does not present slacks caused by creeping even when fastened to a battery terminal, and gives no deformation caused by over-fastening. SOLUTION: In this bus bar 1 whose both ends of a belt-like flexible connection part 2 which electrically connect the terminals of adjacent batteries to each other are caulked by terminal parts 4 each of which has an insert hole 5 receiving the battery terminal and a caulking cover 9. A circular strand leakage prevention part 7 is provided on an upper outer end of a flange part 6 which is mounted erect on a bottom board 8 of the terminal part 4 to surround the insertion hole 5. A lower surface of the caulking cover 9 which holds the flexible connection part 2 between it and the bottom board 8 of the terminal part 4 for caulking the flexible connection part 2 is abutted on the strand leakage prevention part 7 after the caulking has been carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible bus bar for electrically connecting terminals of a pair of batteries, and more particularly, to an insertion hole in which both ends of a strip-shaped flexible connection portion receive battery terminals. And a structure of a bus bar for connection between batteries, which is crimped and connected to a terminal portion having a crimping lid.

[0002]

2. Description of the Related Art Conventionally, various bus bars for connecting batteries have been known. As an example, a configuration of a conventional bus bar for connection between batteries as shown in FIGS. 4 and 5 will be described. As shown in FIG. 4 and FIG.
In order to electrically connect the screw-shaped battery terminals 23 and 24, a flexible connection portion 32 in which a wire 33 made of metal such as copper is knitted in a strip shape has both ends formed with insertion holes 35 for receiving the battery terminals 23 and 24, respectively. It is caulked and connected to the terminal portion 34 having the caulking lid 38. Also, the bottom plate 37 of the terminal portion 34
A flange 36 surrounding the insertion hole 35 is provided upright.
A nut 25 and a washer 26 for tightening the terminal portion 34 are screwed to the battery terminals 23 and 24.

[0003] The bus bar 31 for connection between batteries having the above configuration.
First, both ends of the flexible connection portion 32 are connected to the terminal portion 3.
After being placed on the bottom plate 37, the caulking lid 38 is caulked by being pressed by a press or the like. Then, after the insertion hole 35 of the terminal portion 34 is inserted into the battery terminals 23 and 24, the battery 21,
22. At this time, the batteries 21 and 22
Even if there is some deviation, or even if it is slightly deviated after tightening due to vibration, the flexible connection portion 32 bends appropriately, so that the nut 25 does not loosen, and there is no hindrance to the electrical connection.

[0004]

However, in the conventional bus bar 31 for connection between batteries, as shown in FIG. 5, the flexible connecting portion 32 is placed on the bottom plate 37 of the terminal portion 34 and the crimping lid 38 is used. If crimping is performed, the element wire 33 may protrude from the flange portion 36 in some cases. If crimped in this state, the element wire 33 will be fixed in a state protruding from the upper surface of the terminal portion 34, and even if the terminal portion 34 is fixed to the battery terminal 24 with the nut 25, it cannot be sufficiently tightened. However, there has been a problem that the nut 25 is loosened and the electrical conduction becomes poor.

[0005] Even if the wire 33 does not protrude, the caulking lid 38 is disengaged from the flange portion 36, so that the caulking lid 38 cannot be sufficiently tightened.
Called creep. ) Causes loosening of the nut 25. On the contrary, when the nut 25 is excessively tightened, there is a problem that the crimping lid 38 and the flexible connecting portion 34 are deformed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to prevent a wire of a flexible connection portion from protruding from a terminal portion, and to prevent slack due to creep even when tightened to a battery terminal. Another object of the present invention is to provide a bus bar for connection between batteries which is not deformed due to overtightening.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to provide a battery connecting device in which both ends of a strip-shaped flexible connecting portion are provided with an insertion hole for receiving a battery terminal and a battery upper surface for electrically connecting adjacent battery terminals. In a bus bar for connection between batteries, which is crimped and connected to a terminal portion having a crimping lid for clamping and crimping a wire together with a bottom plate abutting on the bottom plate, the insertion hole is provided upright on the bottom plate of the terminal portion. A bus bar for connection between batteries, wherein an annular element wire leakage prevention portion is provided outside the upper end of the surrounding flange portion, and the lower surface of the caulking lid is brought into contact with the material leakage prevention portion after caulking. Can be solved by

[0008] According to the battery-to-battery connection bus bar having the above-described structure, an annular element wire leakage preventing portion is provided outside the upper end of the flange portion which stands on the bottom plate of the terminal portion and surrounds the insertion hole. Therefore, the wires of the flexible connection portion do not protrude above the terminal portion, and there is no fastening failure due to the biting of the wires, so that the reliability of the battery connection bus bar can be improved. Further, since there is no appearance defect, the quality of the bus bar for connecting the batteries can be improved. Further, since the lower surface of the caulking lid is brought into contact with the material leakage preventing portion after caulking, the rigidity of the flange portion is contributed, and the rigidity of the terminal portion is enhanced. Therefore, the battery terminals can be sufficiently fastened, loosening due to creep can be reliably prevented, and parts are not deformed due to overtightening, so that the reliability of the battery connection bus bar can be further improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a bus bar for connecting batteries according to the present invention will be described below in detail with reference to FIGS. 1 to 3 and FIG. FIG. 1 is a perspective view showing an embodiment of a bus bar for connection between batteries according to the present invention, FIG. 2 is a sectional view taken along the line BB in FIG. 1, and FIG. 3 is an operation explanatory view in FIG. As shown in FIGS. 1 to 3, the battery connection bus bar 1 according to the present embodiment is a wire made of copper or the like for electrically connecting the screw-shaped battery terminals 23 and 24 of the adjacent batteries 21 and 22. Both ends of a flexible connecting portion 2 in which a band 3 is knitted are swaged and connected to a pair of terminal portions 4 and 4. The terminals 4 are connected to the battery terminals 23, 2
The bottom plate 8 is provided with a flange 6 surrounding the insertion hole 5. The insertion hole 5 receives the insertion hole 5 and a caulking lid 9. Also,
In the bus bar 1 for connecting batteries according to the present embodiment, in addition to the above-described configuration, an annular element wire leakage prevention portion 7 is provided outside the upper end of the flange portion 6. Further, a crimping lid 9 for clamping and crimping the flexible connection portion 2 together with the bottom plate 8 of the terminal portion 4 is brought into contact with the material leakage preventing portion 7 after crimping.

In the bus bar 1 for connection between batteries having the above-described structure, first, both ends of the flexible connection portion 2 are placed on the bottom plate 8 of the terminal portion 4 as shown in FIG. At this time, the caulking lid 9 is in an upright state with respect to the bottom plate 8, but the wire 3 of the flexible connection portion 2 leaks out of the upper surface of the flange portion 6 because of the wire leakage prevention portion 7. There is no such thing. Next, the caulking lid 9 is bent by a press or the like, and the flexible connecting portion 2 is pressed from above.
Is clamped between the bottom plate 8 and the caulking lid 9 and caulked. At this time, since the lower surface of the caulking lid 9 is in contact with the wire leakage prevention portion 7 formed at the end of the flange portion 6, it is possible to caulk with a sufficient pressing force without worrying about excessive caulking. it can.

In the battery connecting bus bar 1 according to the present embodiment having the above-described configuration, an annular element wire leaks out of the upper end of the flange portion 6 erected on the bottom plate 8 of the terminal portion 4 and surrounding the insertion hole 5. Since the prevention portion 7 is provided, the element wire 3 of the flexible connection portion 2 does not protrude above the terminal portion 4. Therefore, the reliability of the battery connection bus bar can be improved since there is no tightening failure due to the wire biting. Furthermore, since the appearance defect is eliminated, the quality of the battery connection bus bar can be improved. Also,
The rigidity of the flange portion 6 contributes because the lower surface of the caulking lid 9 that holds the flexible connection portion 2 together with the bottom plate 8 of the terminal portion 4 and caulks comes into contact with the material leakage prevention portion 7 after caulking. ,
The rigidity of the terminal portion 4 can be enhanced. Therefore, it is possible to sufficiently tighten the battery terminal 24, and loosening of the nut due to creep or the like can be reliably prevented. In addition, since the terminal portion 4 is not deformed due to excessive tightening, the reliability of the bus bar for connecting the batteries can be further improved.

It should be noted that the present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. For example, although the element wire leakage preventing portion 7 in the present embodiment has a shape in which the upper end of the flange portion 6 is squeezed outward and integrally formed, a ring-shaped flat plate is spot-welded to the upper end of the flange portion 6 by spot welding or the like. There is no problem with the configuration to attach.

[0013]

As described above, according to the battery-to-battery connection bus bar of the present invention, an annular element wire leakage prevention portion is provided on the outer side of the upper end of the flange portion which stands on the bottom plate of the terminal portion and surrounds the insertion hole. ing. Therefore, the wires of the flexible connection portion do not protrude above the terminal portion, and there is no fastening failure due to the biting of the wires, so that the reliability of the battery connection bus bar can be improved. In addition, since there is no appearance defect, the quality of the bus bar for connecting the batteries can be improved. Further, since the lower surface of the caulking lid is brought into contact with the material leakage preventing portion after the caulking, the rigidity of the flange portion contributes, thereby increasing the rigidity of the terminal portion. Therefore, it is possible to sufficiently tighten the battery terminal, and loosening of the nut or the like due to creep can be reliably prevented. Furthermore, since the deformation of the terminal portion and the like due to excessive tightening can be prevented,
The reliability of the battery connection bus bar can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an inter-battery connection bus bar according to the present invention.

FIG. 2 is a sectional view taken along line BB in FIG.

FIG. 3 is an operation explanatory diagram in FIG. 1;

FIG. 4 is a perspective view showing a relationship between a conventional battery connection bus bar and a battery.

FIG. 5 is a sectional view taken along line AA in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bus bar for connection between batteries 2 Flexible connection part 3 Element wire 4 Terminal part 5 Insertion hole 6 Flange part 7 Element leakage prevention part 8 Bottom plate 9 Caulking lid

Claims (1)

[Claims] An end of a strip-shaped flexible connecting portion is provided with an insertion wire for receiving a battery terminal and a bottom plate abutting on an upper surface of the battery to sandwich an element wire for electrically connecting adjacent battery terminals. An inter-battery connection bus bar that is swaged and connected to a terminal portion having a swaged lid, wherein an annular element wire is provided outside the upper end of a flange portion that stands on the bottom plate of the terminal portion and surrounds the insertion hole. A bus bar for connection between batteries, wherein a leakage prevention portion is provided, and the lower surface of the caulking lid is brought into contact with the material leakage prevention portion after caulking.