JP2001266844A - Connecting structure of battery terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting structure of battery terminal which is superior in general-purpose properties and easy in connection work. SOLUTION: The battery terminal connecting structure 31 comprises a battery post 33 which is installed on the top side of a battery body 32, and a battery terminal 51 which is engaged with the battery post 33 as well as being connected with the electric wire edge. The battery post 33 is formed with a male screw portion 34, which is formed at the substrate side so that the female connector housing 36 covering the surrounding of the battery post 33 may be screwed, and a male terminal portion 35 integrally as one unit, which is formed at the top end so that the female terminal 50 which is housed in the male connector housing 41 to be fitted with the female connector housing 36 may be connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery terminal connection structure, and more particularly, to a battery post which can easily and surely make an electrical connection and can cope with terminal shapes of a plurality of battery terminals. The present invention relates to a battery terminal connection structure provided.

[0002]

2. Description of the Related Art Conventionally, various types of battery terminal connection structures have been known. For example, in the conventional battery terminal connection structure 1 shown in FIG. 7, a substantially cylindrical electrode gripping portion 4 fitted externally to a columnar battery post (battery electrode) 3 erected on the upper surface of the battery body 2. ,
A pair of leg pieces 5, 5 extending from both ends of the electrode gripping portion 4 and a direction in which the pair of leg pieces 5, 5 approach each other to reduce the diameter of the electrode gripping portion 4. A battery terminal 10 having bolts 6, washers 7 and nuts 8 as fastening means for holding the battery is used.

[0003] When the battery terminal 10 fixed to the end of the electric wire W is fixed to the battery post 3, the electrode gripping portion 4 is held in a state where both leg pieces 5 and 5 are spread.
To the battery post 3. Then, by tightening a nut 8 screwed through a washer 7 to a shaft portion of the bolt 6 inserted into the bolt through hole 9, the two leg pieces 5,
5 are attracted to each other, and the electrode gripping portion 4 is reduced in diameter. As a result, the electrode gripping portion 4 comes into pressure contact with the outer peripheral surface of the battery post 3, and the battery post 3 and the battery terminal 10 are electrically connected.

In another conventional battery terminal connection structure 21 shown in FIG. 8, a connection terminal portion 24 is attached to a bolt-shaped battery post 23 erected on the upper surface of a battery body 22.
After the insertion hole 25 is inserted, the nut 28 is screwed into the male screw portion of the battery post 23 and tightened to use the battery terminal 20 in which the battery post 23 and the connection terminal portion 24 are electrically connected. ing. Furthermore, in recent years, the development of high-performance electric vehicles has been promoted in order to improve air pollution caused by vehicle exhaust gas. However, even when a battery terminal connection structure used for a battery mounted on an electric vehicle has a high voltage, Have been proposed.

[0005]

However, in the various battery terminal connection structures 1 and 21 described above, the shapes of the battery posts 3 and 23 used for the different battery terminal connection structures 1 and 21 are different from each other. Not completely compatible with each other. Therefore, a plurality of battery posts 3 and 23 must be prepared in accordance with the various battery terminal connection structures 1 and 21, complicating parts management and the like, and increasing the manufacturing cost.

Further, in the conventional battery terminal connection structure 1 (21) as described above, the fixing of the battery terminal 10 (20) to the battery post 3 (23) is not loosened due to the vibration accompanying the running of the vehicle. , It is necessary to strongly tighten the nut 8 (28). Therefore,
A tool such as an impact wrench or an electric wrench has to be used for tightening the nut 8 (28), so that the connection work becomes complicated and the weight of the tool imposes a physical burden on the operator. Also, the battery post 3 (23) and the battery terminal 10 due to excessive tightening of the nut 8 (28)
It is also necessary to prevent (20) from being damaged.

Further, for example, in the case of a battery terminal used for connecting a plurality of batteries in series or parallel to each other, such as a battery mounted on an electric vehicle or the like, the interval between the battery posts is narrow, and the tightening is performed. There is a problem that it is difficult to operate the tool by hitting another component such as a battery post adjacent thereto, and the working efficiency is reduced. Therefore, an object of the present invention is to solve the above-mentioned problems, and to provide a battery terminal connection structure having high versatility and easy connection work.

[0008]

SUMMARY OF THE INVENTION The object of the present invention comprises a battery post erected on the upper surface of a battery body, and a battery terminal connected to an end of an electric wire and engaged with the battery post. A battery terminal connection structure, comprising: a male screw portion formed on a base side of the battery post so that a first connector housing that covers the periphery of the battery post can be engaged with the battery post; This is achieved by a battery terminal connection structure in which a male terminal portion formed on the distal end side so that a female terminal accommodated in a second connector housing to be connected can be connected is integrally formed. .

According to the above configuration, after the first connector housing is engaged with the male screw portion of the battery post, the second connector housing containing the female terminal is simply fitted into the first connector housing. The male terminal portion of the battery post can be electrically connected to the female terminal.

Therefore, it is not necessary to tighten the nut using a tightening tool, and the battery post and the electric wire can be electrically connected by simple connector fitting. Therefore, there is no need to provide a means for preventing the nut from being excessively tightened, and the tightening tool does not hit other parts to lower the working efficiency, so that the connection work of the battery terminal can be significantly improved, and A highly reliable battery terminal connection structure can be obtained.

In the battery post, since the male screw portion and the male terminal portion are integrally formed, the battery terminal having the battery post inserted into the insertion hole of the connection terminal portion independently or simultaneously is provided. The battery terminal having a terminal portion connectable to the male terminal portion can be fixed to the male terminal portion by tightening and fixing with a nut screwed to the male screw portion.

Therefore, the battery post of the present invention can be applied to a plurality of battery terminals having different terminal shapes while having a single shape. Therefore, it is not necessary to prepare a large number of battery posts for each battery having a different battery terminal connection structure, which facilitates parts management and the like during battery manufacture.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a battery terminal connection structure according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an exploded perspective view of a main part of a battery provided with a battery terminal connection structure according to an embodiment of the present invention, and FIG.
3 is a partial sectional perspective view illustrating the battery terminal connection structure shown in FIG. 3, and FIG. 3 is a longitudinal sectional view showing the connection state of the battery terminal connection structure shown in FIG.

As shown in FIGS. 1 to 3, the battery terminal connection structure 31 of the present embodiment is connected to a battery post 33 erected on the upper surface of a battery main body 32, connected to an end of an electric wire W and And a battery terminal 51 to be engaged with the battery post 33. Note that the pair of battery posts 33 shown in FIG. 1 correspond to the positive and negative electrodes of the battery, respectively, and have exactly the same configuration.

As shown in FIG. 2, the battery post 33 is a battery electrode in which a male screw portion 34 formed on the base side and a cylindrical male terminal portion 35 formed on the tip side are integrally formed. is there. A female connector housing 36, which is a first connector housing made of an insulating material such as a synthetic resin, can be screwed into the male screw portion 34, and a battery terminal 51 is connected to the male terminal portion 35.
(See FIG. 3, FIG. 3).
reference).

At the bottom of the female connector housing 36 formed in a substantially bottomed cylindrical shape, a female screw portion 37 which can be screwed with the male screw portion 34 is formed.
Can cover the periphery of the battery post 33. A pair of lock arms 43 provided on the side surface of the male connector housing 41 is provided at the inner edge of the upper opening of the female connector housing 36 into which the male connector housing 41 as the second connector housing is fitted. An inner flange 38 with which the stopping projection 43a can be engaged is formed.

As shown in FIG. 3, the male connector housing 41 is made of an insulating material such as a synthetic resin, and insulates the female terminal 50 of the battery terminal 51 and an electric wire fixing portion (not shown). And a locking mechanism for engaging and disengaging the locking projections 43a of the lock arm 43 with the inner flange 38. The locking mechanism 43 is detachable from the female connector housing 36. A contact spring 52 made of a highly conductive elastic material such as phosphor bronze is provided in the male terminal insertion hole of the female terminal 50 in order to secure conduction with the male terminal portion 35.
Is inserted.

Next, the above-described battery terminal connection structure 31
The connection procedure will be described. First, the female thread portion 37 of the female connector housing 36 is attached to the male thread portion 34 of the battery post 33.
The female connector housing 36 is screwed so as to cover the periphery of the male terminal 35 formed integrally with the distal end of the male screw 34. On the other hand, the battery terminal 51 in which the end of the electric wire W is fixed to the electric wire fixing portion and the contact spring 52 is inserted into the male terminal insertion hole of the female terminal 50 is surrounded by the male connector housing 41. Assembled.

Next, the male connector housing 41 accommodating the female terminal 50 externally connected to the male terminal portion 35 is fitted into the upper opening of the female connector housing 36.
At this time, the locking projections 43 a of the pair of lock arms 43 provided on the male connector housing 41 are engaged with the inner flange 36 of the female connector housing 36.
As a result, the male connector housing 41 is locked so as not to be displaceable relative to the female connector housing 36, and the female terminal 50 is electrically connected to the male terminal portion 35. still,
When the engagement between the lock arms 43 and 43 and the inner flange 36 is released, the male connector housing 41 can be removed from the female connector housing 36.

That is, according to the battery terminal connection structure 31 of the present embodiment, the male terminal portion 35 of the battery post 33 is connected only by fitting the male connector housing 36 accommodating the female terminal 50 to the female connector housing 36. Female terminal 5
0 can be electrically connected. Therefore, it is not necessary to tighten the nut using a tightening tool, and the battery post 33 and the electric wire W can be electrically connected by simple connector fitting.

Accordingly, it is not necessary to provide a means for preventing the nut from being overtightened in the battery terminal, and it is possible to prevent the tightening tool from hitting other parts and reducing the working efficiency. Also, since a heavy tool such as an impact wrench or an electric wrench for tightening the nut is not required, the connection work of the battery terminal can be performed very easily and reliably, and the physical burden on the operator is significantly reduced. Thus, a highly reliable battery terminal connection structure capable of being connected can be obtained.

The battery terminal connection structure of the present invention is limited to the configuration of the female connector housing 36, the male connector housing 41, the battery terminal 51, and the male terminal portion 35 in the battery terminal connection structure 31 of the above embodiment. However, it goes without saying that various forms can be adopted. For example, the male terminal portion 35 in the above embodiment
Is formed in a columnar shape in conformity with the cylindrical female terminal 50, but the shape of the male terminal portion can be appropriately changed according to the shape of the female terminal to be fitted. Also, the first connector housing that can be engaged with the male screw portion of the battery post can be a male connector housing, the second connector housing can be a female connector housing, and various configurations such as a lock mechanism can be adopted. .

A female connector housing 136 as shown in FIG. 4 can be used as the first connector housing that can be engaged with the male screw portion of the battery post.
The female connector housing 1 having a substantially bottomed cylindrical shape.
As shown in FIG.
An opening in which a plurality of locking lances 137 that can be engaged with the projection 4 are protruded from the inner peripheral surface is formed.

Therefore, the female connector housing 136
When the female connector housing 136 is pushed in from above the battery post 33, the locking lance 137 is locked to the thread of the male screw portion 34, so that the female connector housing 136 is engaged and covers the periphery of the battery post 33. Can be. or,
On the bottom surface of the female connector housing 136, a plurality of elastic pieces 138 for preventing rattling are projected. And
The female connector housing 136 is connected to the battery post 33.
When removing the female connector housing 136 from the male screw portion 34, the female connector housing 136 may be rotated in the loosening direction.

FIGS. 5 and 6 are an exploded perspective view and an enlarged partial cross-sectional view of a main part showing another connection form of the battery post 33 in the battery terminal connection structure 31 of the above embodiment. As shown in FIG. 5, an insertion hole formed in the connection terminal portion 61 of the battery terminal 60 is inserted into the male screw portion 34 formed on the base side of the battery post 33 so that the female connector housing 36 can be screwed. The battery terminal 60 is fastened and fixed by inserting the hole 62 and screwing and tightening the nut 28.
The battery post 33 and the connection terminal portion 61 can be connected to be able to conduct electricity.

A male terminal 3 formed on the tip end of the battery post 33 so that the female terminal 50 can be connected thereto.
5 includes a battery terminal 1 as shown in FIG.
In addition, the electrode gripping portion 4 which is the terminal portion of the outer ring 0 is externally fitted, and a nut is fastened to the bolt 6 inserted into the bolt through hole 9, thereby pulling the two leg pieces 5, 5 toward each other to reduce the diameter of the electrode gripping portion 4. Can be done. Therefore, the electrode gripping portion 4 is pressed against the outer peripheral surface of the male terminal portion 35, so that the battery post 33 and the battery terminal 10 can be electrically connected.

That is, the battery post 33 can correspond to a plurality of battery terminals 10 and 60 having a single shape but different terminal shapes. Therefore, it is not necessary to prepare a large number of battery posts for each battery having a different battery terminal connection structure, which facilitates parts management and the like during battery manufacture. Therefore, according to the battery terminal connection structure 31 of the present embodiment, it is possible to provide a battery terminal connection structure having high versatility and easy connection work. Although the two battery terminals 10 and 60 are fixed to the battery post 33 shown in FIG. 6 at the same time, they may be fixed independently.

[0028]

As described above, according to the battery terminal connection structure of the present invention, after the first connector housing is engaged with the male screw portion of the battery post, the male connector housing accommodating the female terminal is connected to the first connector housing. The male terminal portion of the battery post can be electrically connected to the female terminal simply by being fitted into the connector housing.

Therefore, it is not necessary to tighten the nut using a tightening tool, and the battery post and the electric wire can be electrically connected by simple connector fitting. Therefore, there is no need to provide a means for preventing the nut from being excessively tightened, and the tightening tool does not hit other parts to lower the working efficiency, so that the connection work of the battery terminal can be significantly improved, and A highly reliable battery terminal connection structure can be obtained.

In the battery post, since the male screw portion and the male terminal portion are integrally formed, the battery terminal having the battery post inserted through the insertion hole of the connection terminal portion independently or simultaneously is provided. The battery terminal having a terminal portion connectable to the male terminal portion can be fixed to the male terminal portion by tightening and fixing with a nut screwed to the male screw portion.

Therefore, the battery post of the present invention can be applied to a plurality of battery terminals having different terminal shapes while having a single shape. Therefore, there is no need to prepare a large number of battery posts for each battery having a different battery terminal connection structure, and parts management and the like during battery manufacture are facilitated, so that manufacturing costs can be reduced. Therefore, it is possible to provide a battery terminal connection structure having high versatility and easy connection work.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part of a battery provided with a battery terminal connection structure according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional perspective view illustrating a battery terminal connection structure shown in FIG.

FIG. 3 is a longitudinal sectional view showing a connection state of the battery terminal connection structure shown in FIG. 1;

FIG. 4 is a partial cross-sectional perspective view showing a modification of the female connector housing shown in FIG.

FIG. 5 is an exploded perspective view of a main part showing another connection form of the battery post in the battery terminal connection structure shown in FIG. 1;

6 is an enlarged partial cross-sectional view showing another connection form of the battery post in the battery terminal connection structure shown in FIG.

FIG. 7 is an exploded perspective view of a main part of a battery provided with a conventional battery terminal connection structure.

FIG. 8 is an exploded perspective view of a main part of a battery provided with another conventional battery terminal connection structure.

[Explanation of symbols]

31 Battery Terminal Connection Structure 32 Battery Body 33 Battery Post 34 Male Thread 35 Male Terminal 36 Female Connector Housing (First Connector Housing) 37 Female Thread 41 Male Connector Housing (Second Connector Housing) 43 Lock Arm 50 Female Terminal 51 Terminal for battery

Claims (1)

[Claims] 1. A battery terminal connection structure comprising: a battery post erected on an upper surface of a battery main body; and a battery terminal connected to an end of an electric wire and engaged with the battery post. A male screw portion formed on the base side so that a first connector housing covering the periphery of the battery post can be engaged with the first connector housing; and a second connector housing fitted in the first connector housing. A battery terminal connection structure, wherein a male terminal portion formed on the distal end side so that the formed female terminal can be connected is integrally formed.