JP2001351602A - Battery terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the yield of plate taking in the fabrication of a terminal body by bending a sheet of metal plate and improve the bending rigidity of the fabricated terminal body. SOLUTION: The battery terminal 100 comprises a terminal body 50 having a post fitting portion 51 and a stud bolt mounting seat 53, on which an operation lever 60 is installed. In constructing the terminal body 50 as a bent fabrication of a sheet of metal plate of a belt shape, the post fitting portion 51 is formed by bending a sheet of belt shape metal plate in U shape in the thickness direction, and the both ends of the metal plate bent in U shape are used as two side plates 52 for supporting the operating lever 60. And the rectangular members 55a, 55b which are provided by extension in nearly right angles at the side edge of the extended portion of the above both side plates are bent inwardly respectively and are combined mutually so as to form a stud bolt 80 mounting seat 53. A penetrating hole 56 of the stud bolt 80 for connecting an LA terminal 20 is formed at the mounting seat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery terminal connected to an electrode (battery post) of a battery mounted on an automobile or the like. In particular, the present invention relates to a method for rotating an operation lever without using a fastening tool such as an impact wrench. The present invention relates to a battery terminal that can be attached to and detached from a battery post with one touch by a moving operation.

[0002]

2. Description of the Related Art As an example of a battery terminal which can be attached to and detached from a battery post by rotating an operation lever, a battery terminal disclosed in Japanese Patent Application Laid-Open No. 9-289909 is known.

FIG. 8 shows the configuration of the battery terminal described in the above publication. The battery terminal 30 has an operation lever 32 rotatably attached to a terminal main body 31. The terminal main body 31 has a C-shaped post fitting portion 34 formed in a curved shape and a C-shaped post fitting portion. 3
4 and a pair of bearing block mounting pieces 3 extending in parallel from both ends.
5 and a stud bolt mounting seat 38 on the opposite side of the bearing block mounting piece 35.

A bearing block 36 is mounted on a pair of bearing block mounting pieces 35.
A turning shaft 37 having a reverse thread cut in the left half and the right half is threaded through. The turning shaft 37 is turned by the operation lever 32 to move the pair of bearing block mounting pieces 35 closer to or away from each other. By doing so, the diameter of the C-shaped post fitting portion 34 is reduced or enlarged, and the post-fitting portion 34 can be attached to and detached from the battery post 40.

[0005]

As shown in FIG. 9, a terminal body 31 of a conventional battery terminal is formed by bending a single metal plate.
A pair of bearing block mounting pieces 35 is formed on one side with the center post fitting portion 34 interposed therebetween, and a stud bolt mounting seat 38 is formed on the other side via a connecting portion 39.

Therefore, the developed shape of the metal plate for producing the metal plate is approximately T-shaped as shown in FIG. The portions indicated by the letter A in the figure correspond to the respective components when the terminal body 31 is manufactured.

In this case, since a single linear band plate (portions indicated by reference numerals 39A and 38A) corresponding to a T-shaped vertical bar is bent to form the stud bolt mounting seat 38, the band at that portion is formed. There has been a problem that the length of the plate becomes longer, the dimensions of the whole punched area are required to be wider, the yield is lower, and the cost is higher.

Further, as shown in FIG. 11, the cross section of the connecting portion 39 connecting the mounting seat 38 of the stud bolt and the post fitting portion 31 has a single-piece structure having a small vertical dimension A and a large horizontal dimension B. Considering vertical bending, there is a problem that rigidity and strength are weak because the second moment of area and the section modulus are small.

In view of the above circumstances, the present invention can improve the yield at the time of stripping when the terminal main body is formed by bending a single metal plate, and can improve the bending rigidity of the terminal main body that has been manufactured. It is an object of the present invention to provide a battery terminal that can be designed.

[0010]

According to a first aspect of the present invention, there is provided a stud bolt for connecting a wire-side terminal to the other end side while having a curved post fitting portion externally fitted to the battery post. A terminal body having a mounting seat, and a post fitting portion of the terminal body is rotatably mounted between a post fitting portion and a stud bolt mounting seat, and the post fitting portion is attached to the battery post by rotating operation. A battery terminal having an operating lever for crimping,
In configuring the terminal body as a bent product of one strip-shaped metal plate, the one strip-shaped metal plate is bent into a U-shape in a thickness direction to form the post fitting portion. The two ends of a metal plate bent in a letter shape are used as two side plates for supporting the operation lever, and rectangular pieces extending substantially at right angles to the side edges of the extended portions of the two side plates are bent inward and overlap each other. A mounting seat for the stud bolt is formed, and a through hole for the stud bolt is formed in the mounting seat.

In this battery terminal, the metal plate constituting the terminal body can be formed in a developed U-shape in which a rectangular piece is formed on a side edge of the band plate. And
Since the mounting seat is formed by bending the rectangular pieces inward from both sides and superimposing them, it is possible to set the projecting length of the rectangular pieces short while maintaining sufficient strength. Therefore, it is possible to reduce the size of the U-shaped metal plate in the developed shape,
It is possible to improve the yield at the time of stripping.

Further, since the portion connecting the mounting seat of the stud bolt and the post fitting portion is composed of two side plates, the rigidity and strength of the portion are increased.

According to a second aspect of the present invention, there is provided the battery terminal according to the first aspect, wherein a claw portion for locking a head of a stud bolt is integrally formed on the rectangular plate constituting the mounting seat. .

In this battery terminal, the stud bolt can be prevented from coming off by the claw portion.

[0015]

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

FIG. 1 is an exploded perspective view showing a relationship among a battery terminal, a battery post, and an electric wire side terminal according to the embodiment.
2A and 2B are a plan view and a side sectional view showing a state where the battery terminal is simply set on the battery post.
3 (a) and 3 (b) are a plan view and a side sectional view showing a state in which the operating lever is rotated from the state shown in FIG. 2 and the post fitting portion of the battery terminal is pressed against the battery post. 3 is a perspective view showing the same state as FIG. 3, and FIG. 5 is a sectional view taken along the line VV of FIG. 2 to 5, illustration of the electric wire side terminal is omitted.

The battery terminal 100 of this embodiment
Is for attaching to a stud bolt type battery post 1. A cylindrical battery post adapter 12 for attaching a battery terminal 100 is attached to the battery post 1.

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

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. When the battery terminal 100 is crimped to the battery post adapter 12, the function of the hexagonal portion 13 as a flange portion can prevent the battery terminal 100 from falling out. Therefore, the width across flats of the hexagonal portion 13 is at least larger than the outer diameter of the cylindrical battery terminal mounting portion 12a.

Here, in order to make the battery post adapter 12 as small as possible, the width across flats of the hexagonal portion 13 is equal to or slightly larger than the outer diameter of the cylindrical battery terminal mounting portion 12a. Dimensions are set. Further, since the hexagonal portion 13 also serves as the flange portion, the size in the height direction can be reduced in size.

On the other hand, a battery terminal 100 electrically connected to the battery post adapter 12 has a terminal body 50 formed by bending a single metal plate with a press.
And an operating lever (cam lever) 60 formed by bending a single metal plate with a press, a rotating shaft 70, and a stud bolt 80.

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 body 50 has a curved post fitting portion 51 which is fitted to the battery post adapter 12 at one end and connects the LA terminal 20 attached to the terminal of the battery cable W to the other end. The mounting seat 53 for the stud bolt 80 is provided.

The terminal main body 50 is formed by bending a single band-shaped metal plate 50A having a developed shape as shown in FIG. Rectangular pieces 55a, 55b extending at substantially right angles to the side edges of the extended portions of the side plates 52, 52 are formed with two ends of the metal plate 50A bent in a letter shape as two side plates 52, 52 supporting the operation lever 60. Are bent inward and overlapped with each other to form a mounting seat 53 for the stud bolt, and a through hole 56 for the stud bolt is formed in the mounting seat 53.

In this case, the two side plates 52, 52 extend in parallel to 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 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 prevent interference with a nut 25 fastened to a stud bolt 80 described later when the operation lever 60 is lowered 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 moved from a flange-shaped head 71 to
A body portion 72 penetrating the side plates 62 of the operation lever 60 is extended, and a small-diameter shaft portion 73 is formed at the tip thereof. The small-diameter shaft portion 73 at the tip is fixed to the shaft hole 54 of one of the side plates 52. By that, it is stopped so as not to fall out.

A leaf spring (elastic pressing means) 65 extending from the front end of the top plate 61 is curved into a substantially arc-shaped contour, so that a cam portion for elastically pressing against the peripheral surface of the battery post adapter 12 is provided. 66. This cam portion 66
As shown in FIGS. 2B and 3B, the distance (radius) from the center of the rotating shaft 70 to the outer peripheral surface (cam surface) thereof is smoothly changed. As shown in FIG. 3), when the operation lever 60 is raised, the minimum diameter portion faces the post fitting portion 51 side, and as shown in FIG. When it is tilted to the side, the curve of its 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 set such that the distance between the center of the rotating shaft 70 when the post fitting portion 51 is fitted to the battery post adapter 12 and the battery post adapter 12 The maximum distance R to the outer circumference of
When the operation lever 60 is tilted down as shown in FIG. 3B and the outer peripheral surface of the battery post adapter 12 is appropriately pressed by the maximum diameter portion of the radius R2, the cam portion 66 is formed. A predetermined deformation allowance δ2 (= lap allowance) is generated in the leaf spring 65. FIG. 3 (b)
Shows a state in which the leaf spring 65 is not deformed to indicate the existence of the deformation allowance δ2.

The leaf spring 65 is provided along the peripheral surface of the cam portion 66, and has a proximal end (one end) of the leaf spring 65 in the circumferential direction.
65a is connected to the top plate 61 and is supported as a fixed fulcrum, and a T-shaped tip (the other end) 65b is formed.
Is simply locked to the side plate 62, and is supported as a rotation fulcrum. Then, the cam portion 66 is set so that the center position in the circumferential direction (length direction) of the leaf spring 65 becomes the maximum diameter portion.
Is defined. The leaf spring 65 is provided on the side plate 6.
2 and 62, and can be freely bent and deformed without being restricted by the side plates 62 and 62.

Further, the stud bolt 80 is inserted into the stud bolt mounting seat 53 from the lower surface side 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. In this state, the rectangular plate 55b forming the stud bolt mounting seat 53
The head portion 81 of the stud bolt 80 is locked by bending the claw portion 58 formed at
The stud bolt 80 is stopped so as not to fall down.

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.

Before the battery terminal 100 is mounted on the battery post 1, as shown in FIG. 2, the operation lever 60 is in the upright position. In this state, since the minimum diameter portion of the cam portion 66 faces the post fitting portion 51 side, a large diameter of the post fitting portion 51 is secured.
Therefore, the post fitting portion 51 of the battery terminal 100 can be easily fitted on the battery post adapter 12.

When the post fitting portion 51 is fitted to the battery post adapter 12, the operating lever 60 is moved to the position 9 in this state.
It is turned by 0 degrees, and it falls down on the stud bolt mounting seat 53 as shown in FIGS. When the operation lever 60 is tilted, the largest diameter portion of the cam portion 66 of the operation lever 60 comes into pressure contact with 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 is pressed against the outer periphery of the battery terminal attachment portion 12a of the battery post adapter 12, and the electrical and mechanical connection between the battery terminal 100 and the battery post 1 is established. Achieved. In this state, the hexagonal portion 13 also serving as a flange is provided at the upper end of the battery post adapter 12, so that the battery terminal 100 does not come off.

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 diameter of the post fitting portion 51 is widened, and the battery terminal 100 can be easily removed from the battery post adapter 12.

Further, according to the battery terminal 100 of this embodiment, 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 elastic deformation of the leaf spring 65. Can be absorbed by

Accordingly, a small force is required when the operation lever 60 is rotated, and no excessive force is 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, since the pressing force of the cam portion 66 against the battery post adapter 12 is determined by the elastic force, the contact load is stabilized, and the connection reliability is improved.

A spring can be attached to another portion as a means for elastically bringing the cam portion 66 into contact with the battery post adapter 12, but in the battery terminal 100 described above, the cam portion 66 itself is 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 this battery terminal 100, as shown in FIG. 6, the metal plate 50A constituting the terminal main body 50 is formed in a U-shape in which rectangular pieces 55a and 55b are formed on the side edges of the strip. be able to. Then, the rectangular pieces 55a and 55b are bent inward from both sides and overlapped to form the stud bolt mounting seat 53, so that the rectangular pieces 55a and 55b can be maintained while maintaining sufficient strength.
The protrusion lengths of a and 55b can be set short. Therefore, the dimensions of the U-shaped metal plate 50A in the developed shape can be reduced, and the yield can be improved by reducing the plate removing dimensions.

Further, 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 two side plates 52
Is a section having a large vertical dimension A1 and a short section having a horizontal dimension B1, the section moment of area and the section modulus of the section increase, and the bending rigidity in the vertical direction and the bending rigidity in the horizontal direction increase.

[0049]

As described above, according to the first aspect of the present invention, the developed shape of the metal plate constituting the terminal body is U-shaped, and the protruding length of the rectangular piece constituting the stud bolt mounting seat is provided. Can be set short, so that the yield during plate removal can be improved by reducing the size of the development. In addition, since the portion connecting the stud bolt mounting seat and the post fitting portion is constituted by two vertically long side plates, the rigidity and strength of the portion can be increased.

According to the second aspect of the present invention, the stud bolt can be easily prevented from coming off by the claw portion.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a relationship among a battery terminal, a battery post, and an electric wire side terminal according to an embodiment of the present invention.

FIGS. 2A and 2B are a plan view and a side sectional view showing a state where the battery terminal is simply set on a battery post.

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.

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 development view of a terminal main body in the battery terminal.

FIG. 7 is a sectional view taken along the line VII-VII of FIG. 1;

FIG. 8 is a perspective view showing an example of a conventional battery terminal.

FIG. 9 is a perspective view of a terminal main body in the battery terminal of FIG.

FIG. 10 is a development view of the terminal body of FIG. 9;

FIG. 11 is a sectional view taken along the line XI-XI in FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Battery post 12 Battery post adapter 20 LA terminal (wire side terminal) 50 Terminal main body 50A Metal plate 51 Post fitting part 52 Side plate 53 Stud bolt mounting seat 56 Through hole 60 Operating lever 80 Stud bolt 100 Battery terminal

Claims (2)

[Claims] A terminal body having a curved post fitting portion externally fitted to the battery post on one end side and a stud bolt mounting seat for connecting an electric wire side terminal on the other end side; Rotatably mounted between the post fitting part of the terminal body and the stud bolt mounting seat,
A battery terminal comprising: an operating lever that presses the post fitting portion to the battery post by being rotated. When the terminal main body is configured as a single band-shaped bent metal product, A sheet-shaped metal plate is bent into a U-shape in the thickness direction to form the post fitting portion, and both ends of the U-shaped metal plate are formed as two side plates supporting the operation lever, A rectangular piece extending substantially perpendicular to the side edge of the extended portion of the both side plates is bent inward and overlapped with each other to form a mounting seat for the stud bolt, and a through hole for the stud bolt is formed in the mounting seat. A battery terminal characterized by forming: 2. The battery terminal according to claim 1, wherein a claw portion for locking a head of a stud bolt is formed integrally with the rectangular plate forming the mounting seat.