JP2001351605A - Battery post adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make compact the battery post adapter itself and the battery terminal to be mounted on. SOLUTION: In the battery post adapter 12 which is mounted on the battery post 1 of a stud bolt type, a hexagonal flange part 13 for preventing the pulling out of the battery terminal as well as functioning as a fitting portion of an adapter tightening tool is provided at the top end of the tube shape battery terminal mounting portion 12a having at the inner circumference a female screw 12b to be screwed on the male screw 1a of the battery post.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adapter for a battery post, which is attached to a stud bolt type battery post to securely and easily crimp a battery terminal.

[0002]

2. Description of the Related Art Conventionally, an adapter for a battery post is attached to a stud-bolt type battery post to reliably and easily crimp a battery terminal. FIG. 6 shows a known battery post adapter in such a case.

In FIG. 6, 1 is a battery post, and 2 is a battery post adapter. The battery post adapter 2 is provided at the upper end of a cylindrical battery terminal mounting portion 2a having an internal thread 12b screwed to the male thread 1a of the battery post 1 at a circular flange for preventing the battery terminal from coming off. In addition to the provision of a part 3, a hexagonal part 4 is provided at the lower end of the battery terminal mounting part 2a as a tool fitting part for tightening an adapter.

[0004]

In this case, the total height H of the battery post adapter 2 needs to be the same as the height of the battery terminal mounting portion 2a, the flange portion 3, and the hexagonal portion 4. .

The maximum dimension in the radial direction is, as shown in FIG. 7, a dimension of the width of the hexagonal part 4 larger than the diameter D of the flange part 3 due to the attachment of the battery post adapter 2 with the impact wrench 5. Under the condition that B is increased, it has to be determined by the dimension F between the vertices of the hexagonal portion 4.

Accordingly, there has been a problem that the battery post adapter 2 becomes large in both the height direction and the radial direction, and the battery terminal attached thereto becomes large.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a battery post adapter which can reduce the size of a battery terminal and a battery terminal attached thereto.

[0008]

According to a first aspect of the present invention, there is provided a battery post adapter which is mounted on a stud bolt type battery post, and has a female thread on an inner periphery thereof which is screwed to a male thread of the battery post. A battery terminal attachment flange is provided at the upper end of the battery terminal mounting portion, which also serves as a fitting portion for a tool for tightening an adapter.

In this battery post adapter, a flange is provided at the upper end of the battery terminal mounting portion, the flange serving as a fitting portion for a tool and a retaining portion for the battery terminal.
The height dimension can be reduced by omitting the elements. In addition, since the portion for fitting the tool is at the upper end, the minimum width of the portion can be made equal to the diameter of the battery terminal mounting portion, so that the maximum diameter can be reduced.

According to a second aspect of the present invention, there is provided the battery post adapter according to the first aspect, wherein the flange portion also serving as a fitting portion of the tool is formed in a hexagon shape into which an impact wrench is fitted. I do.

In this battery post adapter, the flange portion is hexagonal, so that it can be easily fastened to the battery post by an impact wrench.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view showing the relationship between the battery post adapter and the battery terminal according to the embodiment, and FIG.
FIGS. 3A and 3B are a plan view and a side sectional view showing a state in which the battery terminal is simply set to the battery post adapter. FIGS. 3A and 3B show the state of FIG. FIG. 4 is a plan view and a side sectional view showing a state in which the post fitting portion of the battery terminal is pressed against the battery post adapter, FIG. 4 is a perspective view showing the same state as FIG. 3, and FIG. It is V arrow sectional drawing. In addition, FIG.
In FIG. 5, the illustration of the electric wire side terminal is omitted.

The battery terminal 100 is to be attached to a stud bolt type battery post 1.
00, a cylindrical battery post adapter 12 is mounted.

The battery post adapter 12 is a cylindrical battery terminal mounting portion 12a having an internal thread 12b screwed to the male thread 1a of the battery post 1 on its inner periphery.
And a hexagonal portion (flange portion) 13 integrally formed at the upper end thereof.

The hexagonal portion 13 is a portion to which a tool (an impact wrench or the like) for tightening the adapter is fitted, and this portion also serves as a flange for retaining the battery terminal. Therefore, the battery post adapter 12 can be fastened to the battery post 1 by fitting the impact wrench to the hexagonal portion 13. Further, when the battery terminal 100 is crimped to the battery post adapter 12, the function of the hexagonal portion 13 as a flange can prevent the battery terminal 100 from coming off. Therefore, the two-face width B1 of the hexagonal portion 13 is at least larger than the outer diameter of the cylindrical battery terminal mounting portion 12a.

Here, the battery post adapter 12
In order to reduce the size as much as possible, the flat width B1 of the hexagonal portion 13 is
The dimensions are set to be the same as or slightly larger than the outer diameter of the cylindrical battery terminal mounting portion 12a. Accordingly, the maximum diameter is determined to be the minimum value by the distance F1 between the vertices of the hexagonal portion 13. In addition, since the hexagonal portion 13 also serves as a flange portion, the height dimension H can be reduced in size.

On the other hand, the battery terminal 100 electrically connected to the battery post adapter 12 is a terminal body 5 formed by bending a single metal plate by a press.
0, an operating lever 60 made by bending a single metal plate with a press, a rotating shaft 70, and a stud bolt 8
0.

The stud bolt 80 is provided so that the LA terminal 20 attached to the terminal of the battery cable W can be attached to the battery terminal 100 using the washer 23 and the nut 25.

The terminal main body 50 has a curved post fitting portion 51 externally fitted to the battery post adapter 12 on one end side, and the LA terminal 20 attached to the terminal of the battery cable W is connected to the other end side. Mounting seat 53 for the stud bolt 80 is provided.

The terminal body 50 is formed by bending a single band-shaped metal plate into a U-shape in the thickness direction to form the post fitting portion 51, and operating both ends of the U-shaped metal plate. Two side plates 52, 52 supporting the lever 60
Then, the rectangular pieces 55a, 55b extending substantially perpendicularly to the side edges of the extended portions of the both side plates 52, 52 are respectively bent inward and overlapped with each other to form the stud bolt mounting seat 53, and further, By forming a through hole 56 for a stud bolt in the mounting seat 53, it is configured as an integrated press product.

In this case, the two side plates 52, 52 extend in parallel with the extending directions of both ends of the U-shaped post fitting portion 51, and the distance between the two side plates 52, 52 is the post fitting portion. 51
Is set equal to the diameter of

Then, between the two side plates 52, 52 connecting the post fitting portion 51 and the stud bolt mounting seat 53,
The base of the operation lever 60 is inserted.

The operation lever 60 includes a substantially rectangular top plate 61,
The top plate 61 includes a pair of substantially circular side plates 62, 62 connected to both side edges of the front end of the top plate 61, and a curved leaf spring 65 extended to the front end of the top plate 61.

A through hole 64 is formed in the center of the top plate 61 to avoid interference with a nut 25 fastened to a stud bolt 80 described below when the operation lever 60 is tilted on the stud bolt mounting seat 53. Have been. Also, the top plate 6
Ribs 63, 63 which are bent downward for reinforcement are provided on both left and right side edges of 1.

The side plates 62, 62 are formed to have a width that fits between the side plates 52, 52 of the terminal body 50. Both ends of the rotating shaft 70 penetrated by these side plates 62, 62 are connected to the terminal body 50. Shaft holes 54 of both side plates 52 of 52
, The operation lever 60 is attached to the terminal body 50 so as to be rotatable up and down.

The rotating shaft 70 is formed by extending a trunk portion 72 extending from the flange-shaped head portion 71 through the side plates 62, 62 of the operation lever 60 and forming a small-diameter shaft portion 73 at the tip. The small diameter shaft portion 73 is fixed to the shaft hole 54 of one of the side plates 52 so as not to come off.

A leaf spring (elastic pressing means) 65 extending from the front end of the top plate 61 is bent into a substantially arc-shaped contour, so that the cam elastically presses the peripheral surface of the battery post adapter 12. The part 66 is constituted. This cam part 66
As shown in FIGS. 2 (b) and 3 (b),
(Radius) from the center of the to the outer peripheral surface (cam surface)
As shown in FIG. 2 (b), when the operation lever 60 is raised, the minimum diameter portion faces the post fitting portion 51 side as shown in FIG. 2 (b), and as shown in FIG. 3 (b). To
When the operation lever 60 is tilted to the side of the stud bolt mounting seat 53 by 90 degrees, the curved surface (cam surface) is set so that the largest diameter portion faces the post fitting portion 51 side.

As shown in FIG. 2 (b), the radius R2 at the maximum diameter portion is defined by the distance from the center of the rotating shaft 70 when the post fitting portion 51 is fitted to the battery post adapter 12, for the battery post. The maximum distance R1 to the outer periphery of the adapter 12 is set to be larger than the maximum distance R1. As shown in FIG. 3B, the operation lever 60 is depressed to appropriately press the outer peripheral surface of the battery post adapter 12 at the maximum diameter portion of the radius R2. Then, a predetermined deformation allowance δ is applied to the leaf spring 65 constituting the cam portion 66.
2 (= lap fee) occurs. FIG.
(B) shows a leaf spring 65 to indicate the existence of the deformation allowance δ2.
Is shown in an undeformed state.

The leaf spring 65 is provided along the peripheral surface of the cam portion 66, and is supported as a fixed fulcrum by connecting the base end 65a of the leaf spring 65 in the circumferential direction to the top plate 61. The T-shaped tip 65b is simply locked to the side plate 62, and thus is supported as a rotation fulcrum. The contour of the cam portion 66 is determined so that the center position in the circumferential direction (length direction) of the leaf spring 65 is the maximum diameter portion. The leaf spring 65 is separated from the side plates 62, 62, so that it can be freely deformed without being restricted by the side plates 62, 62.

The stud bolts 80 are inserted into the stud bolt mounting seats 53 from the lower surface upward. The stud bolt 80 includes a rectangular plate-shaped head 81 and a screw shaft 82, and a tip 83 of the screw shaft 82.
However, in order to fit the LA terminal 20 and the nut 25, it is formed to have a slightly smaller diameter.

Then, after being inserted upward from below, the rectangular head 81 of the stud bolt 80 is
The stud bolt mounting seat 53 is fitted in a space between the lower side plates 52, 52 and is prevented from rotating. Further, in this state, the head portion 81 of the stud bolt 80 is locked by bending the claw portion 58 formed on the rectangular plate 55b constituting the mounting seat 53, whereby the stud bolt 80 falls down. It is stopped as not.

Next, the operation will be described.

In order to connect the battery cable W to the battery terminal 100, as shown in FIG. 1, a stud bolt 80 protruding upward from the end of the terminal body 50 is attached to the LA cable attached to the terminal of the battery cable W.
This is performed by fitting the terminal 20 and fastening the nut 25 to the screw shaft portion 82 of the stud bolt 80 via the washer 23.

When the operating lever 60 is upright as shown in FIG. 2, the minimum diameter of the cam 66 is
Since it is directed to the side, a large diameter of the post fitting portion 51 is ensured. Therefore, the battery terminal 1 can be easily
00 can be externally fitted to the battery post adapter 12.

After the post fitting portion 51 is fitted to the battery post adapter 12, the operating lever 60 is turned 90 degrees in this state, and the stud bolt mounting seat 53 is moved upward as shown in FIGS. To beat. When the operation lever 60 is depressed,
The largest diameter portion of the cam portion 66 of the operation lever 60 presses and contacts the outer peripheral surface of the battery post adapter 12. Then, due to the pressing reaction force, the inner peripheral surface of the post fitting portion 51 becomes the battery terminal attaching portion 12a of the battery post adapter 12.
And an electrical and mechanical connection between the battery terminal 100 and the battery post 1 is achieved. In this state, the upper end of the battery post adapter 12 has a hexagonal portion 13 which also serves as a flange portion.
00 does not escape.

Since the top plate 61 of the operation lever 60 has a through hole 64 for avoiding interference with the nut 25,
As shown in FIG. 4, the operation lever 60 can be lowered to a position overlapping the stud bolt mounting seat 53,
When the crimping is completed, the battery terminal 100 can be made as compact as possible.

From this state, the battery terminal 100
In order to remove, the operation lever 60 is raised up to the state shown in FIG. Then, the pressing by the cam portion 66 is released, the aperture of the post fitting portion 51 is widened, and the battery terminal 100 is easily connected to the battery post adapter 12.
Can be removed from.

According to the battery terminal 100, the following various effects can be obtained.

First, in the battery terminal 100, since the cam portion 66 is constituted by the leaf spring 65, the lap margin δ2 when the cam portion 66 is pressed against the battery post adapter 12 is determined by the elasticity of the leaf spring 65. It can be absorbed by deformation.

Therefore, the force required for rotating the operation lever 60 can be reduced, and an excessive force can be prevented from being applied to the peripheral surface of the battery post adapter 12 or the battery terminal 100. As a result, deformation of the battery post adapter 12 and the battery terminal 100 can be prevented. Further, the cam portion 6 is formed by the elastic force.
Since the pressing contact force on the battery post adapter 12 is determined, the contact load is stabilized, and the connection reliability is improved.

A spring may be attached to another portion as a means for elastically contacting the cam portion 66 with the battery post adapter 12. However, in the above-described battery terminal 100, the cam portion 66 itself is provided with a leaf spring 65. , The configuration can be simplified.

In addition, the leaf spring 65 constituting the cam portion 66
Is supported by the rotation fulcrum, so that the leaf spring 65 is more easily bent and deformed, and a good elastic contact action with the battery post adapter 12 can be achieved.

In the battery terminal 100, the metal plate constituting the terminal main body 50 can be formed in a U-shape in which rectangular pieces 55a and 55b are formed on the side edges of the strip. The stud bolt mounting seat 53 is formed by bending the rectangular pieces 55a and 55b inward from both sides and superimposing them, so that the protrusion length of the rectangular pieces 55a and 55b is reduced while maintaining sufficient strength. Can be set. Therefore, the dimensions of the U-shaped metal plate in the developed shape can be reduced, and the yield can be improved by reducing the size of the metal plate.

In the terminal body 50, the portion connecting the stud bolt mounting seat 53 and the post fitting portion 51 is formed of two vertically long side plates 5 having the same width as the post fitting portion 51.
2 and 52, the second moment of area and the section modulus of the portion are increased, the bending rigidity in the vertical direction and the bending rigidity in the horizontal direction are increased, and a high-strength battery terminal is obtained.

[0046]

As described above, according to the first aspect of the present invention, at the upper end of the battery terminal mounting portion, the flange portion which functions as a tool fitting portion and a function as a battery terminal retaining portion is provided. Therefore, compared to the conventional case where a hexagonal portion as a tool fitting portion and a flange portion as a battery terminal retaining portion are separately provided, the height dimension can be reduced by omitting the elements. In addition, since the tool fitting portion is at the upper end, the minimum width of the portion can be made equal to the diameter of the battery terminal mounting portion, so that the maximum diameter can be reduced. As a result, the size of the battery post adapter can be reduced, and the size of the battery terminal can be reduced accordingly.

According to the second aspect of the present invention, since the flange portion serving as a tool fitting portion and a function as a battery terminal retaining portion is formed in a hexagonal shape, it is easily fastened to the battery post by an impact wrench. be able to.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example in which a battery terminal is attached to a battery post adapter according to an embodiment of the present invention.

FIGS. 2 (a) and 2 (b) are a plan view and a side sectional view showing a state where the battery terminal is simply set on a battery post adapter.

FIGS. 3 (a) and 3 (b) are a plan view and a side sectional view showing a state in which an operation lever of the battery terminal is turned to press a post fitting portion against a battery post adapter.

FIG. 4 is a perspective view showing the same state as in FIG. 3;

FIG. 5 is a sectional view taken along the line VV of FIG. 4;

FIG. 6 is a perspective view showing an example of a conventional battery post adapter.

FIG. 7 is a side sectional view showing a state where a conventional battery post adapter is fastened to a battery post by an impact wrench.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Battery post 1a Male screw 12 Adapter for battery post 12a Battery terminal attachment part 12b Female screw 13 Hexagonal part (flange part)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yu Fukuda 206-1 Nunobikibara, Haibara-cho, Haibara-gun, Shizuoka Prefecture Inside Yazaki Parts Co., Ltd. (72) Keiichi Ito 1 Toyota Town, Toyota-shi, Aichi Prefecture Toyota Automobile Stocks In-company (72) Inventor Kazuyuki Shiraki 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Inventor Masanori Wakui 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation F-term (reference) 5H022 BB03 CC04 CC10 CC12

Claims (2)

[Claims] 1. An adapter for a battery post attached to a stud bolt type battery post, wherein an adapter is provided at an upper end of a cylindrical battery terminal attaching portion having an internal thread which is screwed into an external thread of the battery post. An adapter for a battery post, wherein a flange for retaining a battery terminal, which also serves as a fitting portion for a fastening tool, is provided. 2. The battery post adapter according to claim 1, wherein the flange portion also serving as a fitting portion of the tool is formed in a hexagon shape into which an impact wrench is fitted. .