JP3646922B2 - Battery terminal connection structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery terminal connection structure, and more particularly, to a battery terminal connection structure including a battery post that can easily and reliably perform electrical connection and can also correspond to terminal shapes of a plurality of battery terminals. .
[0002]
[Prior art]
Conventionally, various battery terminal connection structures are known. For example, in the conventional battery terminal connection structure 1 shown in FIG. 7, a substantially cylindrical electrode gripping portion 4 fitted on a columnar battery post (battery electrode) 3 standing on the upper surface of the battery body 2 and The pair of leg pieces 5, 5 extending opposite from both ends of the electrode gripping portion 4 and the pair of leg pieces 5, 5 approach each other to reduce the diameter of the electrode gripping portion 4. A battery terminal 10 including a bolt 6, a washer 7, and a nut 8 as tightening means for holding in a direction 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 grip 4 is fitted to the battery post 3 with both leg pieces 5, 5 being widened. . Then, by tightening the nut 8 screwed into the shaft portion of the bolt 6 inserted through the bolt through hole 9 via the washer 7, the leg piece portions 5 and 5 are pulled toward each other, and the electrode gripping portion 4 is reduced in diameter. Is done. As a result, the electrode gripping portion 4 is pressed against the outer peripheral surface of the battery post 3, and the battery post 3 and the battery terminal 10 are connected so as to be energized.
[0004]
In the other conventional battery terminal connection structure 21 shown in FIG. 8, the nut 28 is inserted after the insertion hole 25 of the connection terminal portion 24 is inserted into the bolt-shaped battery post 23 erected on the upper surface of the battery body 22. The battery terminal 20 is used in which the battery post 23 and the connection terminal portion 24 are connected to each other so as to be energized by being screwed into a male screw portion of the battery post 23 and tightened.
Furthermore, in recent years, development of high-performance electric vehicles has been promoted in order to improve air pollution caused by automobile exhaust gas. However, a high voltage is also used as a battery terminal connection structure used for a battery mounted on an electric vehicle. Various things corresponding to are proposed.
[0005]
[Problems to be solved by the invention]
By the way, in the various battery terminal connection structures 1 and 21 as described above, the shapes of the battery posts 3 and 23 used in the different battery terminal connection structures 1 and 21 are different from each other, and are not compatible with each other.
Therefore, a plurality of battery posts 3 and 23 must be prepared in accordance with various battery terminal connection structures 1 and 21, which complicates component management and contributes to an increase in manufacturing cost.
[0006]
Further, in each conventional battery terminal connection structure 1 (21) as described above, in order to prevent the battery terminal 10 (20) from being fixed to the battery post 3 (23) due to vibrations caused by the traveling of the vehicle. In addition, it is necessary to strongly tighten the nut 8 (28).
Therefore, a tool such as an impact wrench or an electric wrench must be used for tightening the nut 8 (28), and the connection work becomes complicated, and the weight of the tool becomes a physical burden on the operator. . It is also necessary to prevent damage to the battery post 3 (23) and the battery terminal 10 (20) due to overtightening of the nut 8 (28).
[0007]
Furthermore, for example, in the case of a battery terminal used when connecting a plurality of batteries in series or in parallel to each other, such as a battery mounted on an electric vehicle or the like, the intervals between the battery posts are narrow and the tightening tools are adjacent to each other. There is a problem that it is difficult to operate by hitting other parts such as a battery post and the work efficiency is lowered.
Accordingly, an object of the present invention is to solve the above-described problems, and to provide a battery terminal connection structure that is highly versatile and easy to connect.
[0008]
[Means for Solving the Problems]
The object of the present invention is a battery terminal connection structure comprising a battery post erected on the upper surface of the battery body, and a battery terminal connected to the end of the electric wire and engaged with the battery post,
The battery post has 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, and a second connector housing fitted to the first connector housing. The battery terminal connecting structure is characterized in that a male terminal portion formed on the front end side so that the female terminal accommodated therein can be connected is integrally formed.
[0009]
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 that accommodates the female terminal is simply fitted into the first connector housing. The male terminal portion can be electrically connected to the female terminal.
[0010]
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 overtightened, and the work efficiency is not lowered due to the tightening tool hitting other parts, so that the battery terminal connection work can be significantly improved, and A highly reliable battery terminal connection structure can be obtained.
[0011]
Further, since the male post portion and the male terminal portion are integrally formed in the battery post, the battery terminal in which the battery post is inserted into the insertion hole of the connection terminal portion, for example, independently or simultaneously is connected to the male screw portion. It is possible to fasten and fix with a nut screwed to the battery terminal, or to fix a battery terminal having a terminal portion connectable to the male terminal portion to the male terminal portion.
[0012]
Therefore, the battery post of the present invention can be applied to a plurality of battery terminals having a single terminal 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, and parts management at the time of battery manufacture becomes easy.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
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 having a battery terminal connection structure according to an embodiment of the present invention, FIG. 2 is a partial cross-sectional perspective view illustrating the battery terminal connection structure shown in FIG. It is a longitudinal cross-sectional view which shows the connection state of the battery terminal connection structure shown in FIG.
[0014]
As shown in FIGS. 1 to 3, the battery terminal connection structure 31 of the present embodiment is connected to the battery post 33 erected on the upper surface of the battery main body 32 and the end of the electric wire W and the battery post 33. And a battery terminal 51 to be engaged. The pair of battery posts 33 shown in FIG. 1 correspond to the positive electrode and the negative electrode of the battery, respectively, and have exactly the same configuration.
[0015]
As shown in FIG. 2, the battery post 33 is a battery electrode in which a male screw part 34 formed on the base side and a columnar male terminal part 35 formed on the tip side are integrally formed.
A female connector housing 36, which is a first connector housing made of an insulating material such as a synthetic resin, can be screwed onto the male screw portion 34, and a cylindrical shape of a battery terminal 51 is formed on the male terminal portion 35. Female terminal 50 can be inserted (see FIG. 3).
[0016]
A female screw part 37 that can be screwed into the male screw part 34 is formed at the bottom of the female connector housing 36 formed in a substantially bottomed cylindrical shape. The periphery of the battery post 33 can be covered.
In addition, on the inner edge of the upper opening of the female connector housing 36 into which the male connector housing 41 which is the second connector housing is fitted, each of a pair of lock arms 43 and 43 provided on the side surface of the male connector housing 41 is provided. An inner flange 38 that can engage with the stop projection 43a is formed.
[0017]
As shown in FIG. 3, the male connector housing 41 is made of an insulating material such as synthetic resin, and covers the female terminal 50 and the electric wire fixing portion (not shown) of the battery terminal 51 to be accommodated in an insulated state. The female connector housing 36 is detachable by a lock mechanism that engages and disengages the locking projection 43a of the lock arm 43 with the inner flange 38.
A contact spring 52 made of a highly conductive elastic material such as phosphor bronze is inserted in the male terminal insertion hole of the female terminal 50 in order to ensure electrical continuity with the male terminal portion 35.
[0018]
Next, the connection procedure of the battery terminal connection structure 31 described above will be described.
First, the female screw portion 34 of the female connector housing 36 is screwed into the male screw portion 34 of the battery post 33 to cover the periphery of the male terminal portion 35 integrally formed on the distal end side of the male screw portion 34. The housing 36 is screwed.
On the other hand, while the end of the electric wire W is fixed to the electric wire fixing portion, the battery terminal 51 in which 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. It is assembled.
[0019]
Next, the male connector housing 41 that accommodates the female terminal 50 that is 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, 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 relatively displaceable with respect to the female connector housing 36, and the female terminal 50 is electrically connected to the male terminal portion 35. 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.
[0020]
That is, according to the battery terminal connection structure 31 of the present embodiment, the male terminal portion 35 of the battery post 33 can be connected to the female terminal 50 simply by fitting the male connector housing 36 housing the female terminal 50 into the female connector housing 36. And 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.
[0021]
Therefore, it is not necessary to provide a means for preventing overtightening of the nut in the battery terminal, and the working efficiency does not decrease when the tightening tool hits other parts. In addition, since heavy tools such as impact wrench and electric wrench are not required to tighten the nut, the battery terminal can be connected easily and securely, and the physical burden on the operator is significantly reduced. A battery terminal connection structure with high reliability that can be obtained can be obtained.
[0022]
The battery terminal connection structure of the present invention is not limited to the configurations 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. 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 accordance 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. It is. In addition, the first connector housing that can be engaged with the male screw portion of the battery post can be a male connector housing, and the second connector housing can be a female connector housing, and the lock mechanism can be configured in various configurations. .
[0023]
Also, 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.
As shown in FIG. 4, a plurality of locking lances 137 that can be engaged with the male threaded portion 34 are provided on the inner peripheral surface of the bottom of the female connector housing 136 formed in a substantially bottomed cylindrical shape. An opening is formed.
[0024]
Therefore, 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 the battery The periphery of the post 33 can be covered. Further, a plurality of rattle-preventing elastic pieces 138 project from the bottom surface of the female connector housing 136.
When the female connector housing 136 is removed from the battery post 33, the female connector housing 136 may be rotated in the loosening direction with respect to the male screw portion.
[0025]
FIGS. 5 and 6 are an exploded perspective view and a partial enlarged cross-sectional view of the 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 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. By inserting the hole 62 and screwing and tightening the nut 28, the battery terminal 60 can be fastened and fixed, and the battery post 33 and the connection terminal portion 61 can be connected so as to be energized.
[0026]
In addition, the male terminal portion 35 formed on the front end side of the battery post 33 so that the female terminal 50 can be connected to the electrode holding portion 4 which is the terminal portion of the battery terminal 10 as shown in FIG. And by tightening the nut to the bolt 6 inserted through the bolt through hole 9, both the leg pieces 5 and 5 can be pulled together to deform the electrode gripping portion 4 in a reduced diameter. 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 connected so as to be energized.
[0027]
In other words, the battery post 33 can correspond to a plurality of battery terminals 10 and 60 having a single terminal 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, and parts management at the time of manufacturing the battery becomes easy.
Therefore, according to the battery terminal connection structure 31 of the present embodiment, a battery terminal connection structure with high versatility and easy connection work can be provided.
In addition, although the two battery terminals 10 and 60 are fixed to the battery post 33 shown in FIG. 6 at the same time, they can be fixed independently of each other.
[0028]
【The invention's effect】
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 containing the female terminals is attached to the first connector housing. The male terminal portion of the battery post can be electrically connected to the female terminal simply by fitting.
[0029]
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 overtightened, and the work efficiency is not lowered due to the tightening tool hitting other parts, so that the battery terminal connection work can be significantly improved, and A highly reliable battery terminal connection structure can be obtained.
[0030]
Further, since the male post portion and the male terminal portion are integrally formed in the battery post, the battery terminal in which the battery post is inserted into the insertion hole of the connection terminal portion, for example, independently or simultaneously is connected to the male screw portion. It is possible to fasten and fix with a nut screwed to the battery terminal, or to fix a battery terminal having a terminal portion connectable to the male terminal portion to the male terminal portion.
[0031]
Therefore, the battery post of the present invention can be applied to a plurality of battery terminals having a single terminal shape but different terminal shapes. Accordingly, it is not necessary to prepare a large number of battery posts for each battery having a different battery terminal connection structure, and parts management at the time of manufacturing the battery is facilitated, so that the manufacturing cost can be reduced.
Therefore, it is possible to provide a battery terminal connection structure that is highly versatile and easy to connect.
[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.
2 is a partial cross-sectional perspective view illustrating the battery terminal connection structure shown in FIG. 1. 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. 1. 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 a partial cross-sectional enlarged view showing another connection form of the battery post in the battery terminal connection structure shown in FIG. 1. 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 main body 33 battery post 34 male screw part 35 male terminal part 36 female connector housing (first connector housing)
37 Female thread portion 41 Male connector housing (second connector housing)
43 Lock arm 50 Female terminal 51 Battery terminal

Claims (1)

A battery terminal connection structure comprising: a battery post erected on the upper surface of the battery body; and a battery terminal connected to the wire end and engaged with the battery post,
The battery post has 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, and a second connector housing fitted to the first connector housing. A battery terminal connection structure, characterized in that a male terminal portion formed on the front end side so as to connect a female terminal accommodated therein is integrally formed.

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