JP3489714B2 - Battery terminal - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery terminal mounted and fixed on a battery electrode of a vehicle or the like.

[0002]

2. Description of the Related Art A battery terminal for connecting an electric wire on a vehicle body is attached and fixed to an electrode of a battery mounted on a vehicle or the like. 9 is an exploded perspective view of a conventional battery terminal, and FIG. 10 is a plan view showing a tightening process of the battery terminal of FIG. This type of battery terminal 1 has a tightening gap 3 formed by dividing the peripheral portion in the radial direction.
And a pair of parallel tightening plates 7 that are connected to both ends of the fixed part 5 that sandwiches the tightening gap 3 and that has a cylindrical fixing part 5 that can be inserted into the battery electrode 4. And an electric wire connecting portion 9 extended to the.

A bolt insertion hole 11 is formed in the tightening plate 7, and a bolt 13 is inserted in the bolt insertion hole 11. A washer 15 is inserted at the tip of the bolt 13 inserted into the bolt insertion hole 11, and a nut 17 is screwed. Therefore, the fixing portion 5 is inserted into the battery electrode 4 and the nut 17
When tightening, the pair of tightening plates 7 move in the approaching direction,
While the tightening gap 3 is narrowed, the inner peripheral surface of the fixing portion 5 is pressed against the outer peripheral surface of the battery electrode 4, so that the fixing and mounting can be performed under a good contact state.

[0004]

However, in the above-mentioned conventional battery terminal 1, when the nut 17 is tightened, the tightening load is concentrated on the pair of tightening plates 7 and the battery electrode 4 is sandwiched between the tightening plates. The tightening load is less likely to be transmitted to the facing portion 21 facing 7 and the pressure contact force (contact pressure) at this portion becomes low, which may reduce the contact reliability. Further, if the nut 17 is tightened until the surface pressure at the facing portion 21 becomes sufficient, the tightening load concentrated on the tightening plate 7 may deform and damage the tightening plate 7. The present invention has been made in view of the above circumstances, and provides a battery terminal that can disperse a tightening load concentrated on a tightening plate to improve contact reliability and prevent deformation and damage of the tightening plate. The purpose is to plan.

[0005]

Means for Solving the Problems A battery terminal according to the present invention for achieving the above object is a tubular fixing part having a tightening gap formed by dividing a peripheral part in a radial direction, and the fixing part sandwiching the tightening gap. A pair of parallel tightening plates continuously provided at both ends of the fixing part, and the other part of the fixing part is opposite to the facing part of the fixing part facing the tightening plate with the central axis of the fixing part interposed therebetween. In a battery terminal forming a low-strength portion having low strength, the low-strength portion is a book per unit length of a plurality of grooves formed in the facing portion in the central axis direction.
It is characterized in that it is formed by gradually increasing the number from the tightening plate toward the facing portion. The low-strength portion can be formed by gradually reducing the plate thickness of the facing portion from the tightening plate toward the facing portion.

In the battery terminal thus constructed, the low-strength portion is formed on the facing portion, so that the tightening load concentrated on the tightening plate is dispersed to other portions of the fixing portion. And the unit length of the plurality of grooves formed in the facing portion
If the low-strength portion is formed by gradually increasing the number of hits from the tightening plate toward the facing portion, the degree of tightening load distribution can be adjusted by the number of grooves. Further, the low-strength portion is formed by gradually reducing the plate thickness of the facing portion from the fastening plate toward the facing portion, whereby the degree of dispersion of the fastening load can be adjusted steplessly. .

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a battery terminal according to the present invention will be described in detail below with reference to the drawings. 1 is an exploded perspective view of a first embodiment of a battery terminal according to the present invention, FIG. 2 is a plan view of a developed component of the battery terminal shown in FIG. 1, and FIG. 3 is a fixing part of the battery terminal shown in FIG. It is an enlarged plan view. The battery terminal 31 includes a cylindrical fixing portion 33 that can be inserted into the battery electrode 4, and a pair of parallel tightening plates 3.
5 and the electrical connection portion 37 form a base portion 39. The base portion 39 can be obtained by bending a single developed component 41 shown in FIG. 2 in which a conductive metal plate is blanked.

The fixed portion 33 has a tightening gap 43 which divides the peripheral portion in the radial direction. The tightening plates 35 extend at both ends of the fixing portion 33 that sandwiches the tightening gap 43, and face each other across the tightening gap 43. The electric connection portion 37 is provided on one of the fastening plates 35 so that the vehicle body side electric wire 45 can be crimped.

A bolt insertion hole 47 is formed in the tightening plate 35, and a bolt 49 is inserted into the bolt insertion hole 47.
A washer 51 is inserted at the tip of the bolt 49 inserted into the bolt insertion hole 47, and a nut 53 is screwed.

The facing portion 55 of the fixed portion 33 facing the tightening plate 35 with the central axis m (see FIG. 3) of the fixed portion 33 interposed therebetween is
A low-strength portion 57 having a lower strength than the other portions of the fixing portion 33 is formed. The low-strength portion 57 is formed by gradually increasing a plurality of grooves (serrations) 59 formed on, for example, an inner wall surface of the facing portion 55 in the central axis direction of the fixing portion 33 from the tightening plate 35 toward the facing portion 55. Has been formed. The groove 59
May be formed on the outer peripheral surface of the facing portion 55.

In the battery terminal 31 constructed as described above, by tightening the nut 53, the tightening plates 35 move in the approaching direction, and the inner peripheral surface of the fixing portion 33 comes into pressure contact with the outer peripheral surface of the battery electrode 4. At this time, since the facing portion 55 in which the serrations 59 are concentrated becomes the low-strength portion 57 as compared with the conventional structure, the tightening load concentrated in the tightening plate 35 in the related art is dispersed in the low-strength portion 57, and the battery The surface pressure on the electrode 4 becomes uniform in the circumferential direction.

As described above, according to the battery terminal 31 described above, the plurality of serrations 59 formed on the inner wall surface of the facing portion 55 are gradually increased from the tightening plate 35 toward the facing portion 55, so that the strength is low. Since the portion 57 is formed, the tightening load concentrated on the tightening plate 35 can be dispersed, the contact reliability of the fixing portion 33 can be improved, and the deformation and damage of the tightening plate 35 can be prevented. You can

Next, a second embodiment of the battery terminal according to the present invention will be described. 4 is a plan view of a second embodiment of the battery terminal according to the present invention, FIG. 5 is a plan view of a developed component of the battery terminal shown in FIG. 4, and FIG.
FIG. 6 is a view of the developed component shown in FIG. In addition,
The same members as those shown in FIGS. 1 to 3 are designated by the same reference numerals, and the duplicate description will be omitted. In the battery terminal 61 according to this embodiment, the low-strength portion 63 is formed by gradually reducing the cross-sectional area of the facing portion 55 in the central axis direction from the tightening plate 35 toward the facing portion 55. In this embodiment, the cross-sectional area is reduced by reducing the plate thickness t of the facing portion 55. As shown in FIG.
The plate thickness t of the low-strength portion 63 can be set to about 1/2 or less of the other portions.

According to the battery terminal 61 of this embodiment, like the battery terminal 31 described above, it is possible to disperse the tightening load, which was conventionally concentrated on the tightening plate 35, and the contact reliability of the fixing portion 33 is improved. To improve
In addition to preventing deformation and breakage of the tightening plate 35, the low-strength portion 63 is formed by reducing the plate thickness, so that the degree of dispersion of the tightening load can be finely adjusted steplessly.

Next, a reference example of the battery terminal according to the present invention will be described. FIG. 7 is an exploded perspective view of a reference example of a battery terminal according to the present invention, and FIG. 8 is an example of expanded parts of the battery terminal shown in FIG. 7 (A) and (B).
It is a top view shown in (C). The same members as those shown in FIGS. 1 to 3 are designated by the same reference numerals, and duplicate explanations will be omitted. In the battery terminal 71 according to this embodiment, the cross-sectional area is reduced by reducing the substantial distance of the facing portion 55 in the central axis direction, and the low strength portion 73 is formed. As a means for reducing the substantial distance in the central axis direction, as shown in FIG. 8 (A) , one or a plurality of holes 75 are provided in the facing portion 55 in the circumferential direction .
As shown in FIG. 8B , the lower edge 55a of the facing portion 55 is cut out, and as shown in FIG.
5a and the upper edge 55b may be cut out.

According to the battery terminal 71 of this reference example , similarly to the battery terminal 31 described above, it is possible to disperse the tightening load, which has been conventionally concentrated on the tightening plate 35, and to improve the contact reliability of the fixing portion 33. To improve
In addition to preventing deformation and breakage of the tightening plate 35, the low-strength portion 73 can be formed by the blanking shape of the facing portion 55, so when a partially thin material with a partially thin plate is used. Compared with, the processing becomes easier and the material cost can be reduced.

[0017]

As described in detail above, according to the battery terminal of the present invention, since the low-strength portion is formed on the facing portion, the tightening load concentrated on the tightening plate can be dispersed. Therefore, it is possible to improve the contact reliability of the fixing portion and prevent the tightening plate from being deformed or damaged. And, the battery terminal is composed of a plurality of facing parts.
If the low-strength portion is formed by gradually increasing the number of grooves per unit length from the tightening plate toward the facing portion, the degree of dispersion of the tightening load can be easily adjusted by the number of grooves. . Further, the low-strength portion is formed by gradually reducing the plate thickness of the facing portion from the fastening plate toward the facing portion, whereby the degree of dispersion of the fastening load can be adjusted steplessly. .

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a first embodiment of a battery terminal according to the present invention.

FIG. 2 is a plan view of a developed component of the battery terminal shown in FIG.

FIG. 3 is an enlarged plan view of a fixing portion of the battery terminal shown in FIG.

FIG. 4 is a plan view of a second embodiment of the battery terminal according to the present invention.

FIG. 5 is a plan view of a developed component of the battery terminal shown in FIG.

FIG. 6 is a view of the developed component shown in FIG.

FIG. 7 is an exploded perspective view of a reference example of a battery terminal according to the present invention.

FIG. 8 is a plan view showing examples of expanded components of the battery terminal shown in FIG. 7 in (A), (B), and (C).

FIG. 9 is an exploded perspective view of a conventional battery terminal.

10 is a plan view showing a tightening process of the battery terminal of FIG. 9. FIG.

[Explanation of symbols]

31, 61, 71 Battery terminal 33 Fixed part 35 Tightening plate 43 Tightening gap 55 Face-to-face 57, 63, 73 Low strength part 59 groove

Claims (2)

(57) [Claims] 1. A cylindrical fixing part having a tightening gap formed by dividing a peripheral part in a radial direction, and a pair of parallel tightening plates connected to both ends of the fixing part sandwiching the tightening gap. A battery terminal in which a low-strength portion having lower strength than other portions of the fixing portion is formed on a facing portion of the fixing portion that faces the tightening plate with the central axis of the fixing portion interposed therebetween, wherein the low-strength portion is: A battery terminal, wherein the number of grooves per unit length formed in the facing portion in the central axis direction is gradually increased from the fastening plate toward the facing portion. 2. A cylindrical fixing part having a tightening gap formed by dividing the peripheral part in the radial direction, and a pair of parallel tightening plates connected to both ends of the fixing part sandwiching the tightening gap. A battery terminal in which a low-strength portion having lower strength than other portions of the fixing portion is formed on a facing portion of the fixing portion that faces the tightening plate with the central axis of the fixing portion interposed therebetween, wherein the low-strength portion is: A battery terminal formed by gradually reducing a plate thickness of the facing portion from the tightening plate toward the facing portion.