JP3060360B2 - Connection terminal for battery electrode - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a connection terminal for a battery electrode for connecting an electric wire to a battery post of a battery mounted on a vehicle or the like, and more particularly, to a battery for preventing the connection terminal from being tightened more than a predetermined setting. The present invention relates to a connection terminal for an electrode.

[0002]

2. Description of the Related Art In general, a connection terminal for a battery electrode is used to connect an electric wire to a battery post which is an electrode of a battery mounted on an automobile or the like. As shown in FIG. 16, the battery electrode connection terminal 1 includes a board portion 3 having a bolt insertion hole 2, an electric wire connection portion 4 extending from one end of the board portion 3, and the other end of the board portion 3. And an electrode grip portion 6 which is formed in a substantially truncated cone shape and externally fitted to a battery post 5 having a truncated cone shape of a battery, and a bolt insertion hole 7 so as to face the substrate portion 3. The electrode gripper 6
And a tightening plate portion 8 extending at the end of the upper portion. The fastening plate portion 8 is provided with a detent rib 10 for suppressing the rotation of the male screw member 9, and the entire battery electrode connection terminal 1 is integrally formed by bending a metal plate. .

The battery electrode connection terminal 1 is in a state where the electrode gripper 6 can be inserted into and removed from the battery post 5.
It is formed so that a predetermined interval is ensured between the substrate portion 3 and the fastening plate portion 8. The battery electrode connection terminal 1 is configured such that the substrate 3 and the tightening plate 8 are connected to the male screw member 9 and the corresponding washer 11 and female screw member (nut) in a state where the electrode grip portion 6 is fitted to the battery post 5. ) 12 to secure the battery post 5. In this example, the male screw member 9 has a square head, and the detent rib 10 is
Is a plate-like piece having an edge bent, and the detent rib 10
Is in surface contact with the flat side surface of the head of the male screw member 9 to prevent the rotation of the male screw member 9.

The battery electrode connection terminal 14 shown in FIG. 17 has a configuration in which an anticorrosion cover 15 is added to the battery electrode connection terminal 1 shown in FIG. As shown in FIG. 18, the battery electrode connection terminal 14 is in a state where the anticorrosion cover 15 is attached, and the configuration of the connection terminal main body is as follows.
It has the same configuration as the battery electrode connection terminal 1 shown in FIG.

[0005]

However, in the conventional connection terminals 1 and 14 for a battery electrode, since the detent rib 10 stops the male screw member 9 from rotating, the female screw member 12 is connected with a wrench or the like. The substrate part 3 and the tightening plate part 8 are tightened by rotating with a tightening tool, and the tightening force at this time has an appropriate value.

[0006] The appropriate value of the tightening force is such that the inner peripheral surface of the electrode gripper 6 and the outer peripheral surface of the battery post 5 are electrically connected well, that is, to such an extent that electrical contact failure does not occur. Say the value when Therefore, if the tightening is completed at an appropriate value or less, the battery electrode connection terminals 1 and 14 may come off from the battery post 5 due to vibration or the like during running of the vehicle, or a poor electrical contact may occur.

If an excessive tightening force exceeding a proper value is applied, there is a possibility that inconveniences such as breakage of the battery electrode connection terminals 1 and 14 may occur.

However, in general, unless a special tool such as a torque wrench is used to tighten the female screw member 12,
It is difficult to grasp the level of the tightening force. In addition, in the conventional battery electrode connection terminals 1 and 14 described above, the rotation preventing ribs 10 are designed to have a rigid structure, and accordingly, skill is required to quickly perform appropriate tightening. Therefore, there is a problem that the battery electrode connection terminals 1 and 14 are damaged by excessive tightening.

The damage to the battery electrode connection terminals 1 and 14 may be, for example, partial plastic deformation of the detent rib 10, the substrate 3, the fastening plate 8, the anticorrosion cover 15, and the screw member. . If this plastic deformation occurs, for example, the rotation preventing function of the male screw member 9 which is the original function of the rotation preventing rib 10 cannot be sufficiently exhibited, which may cause an accident such as poor electrical contact.

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems, and when the battery electrode connection terminal is mounted on the battery post, the connection can be easily and surely realized with a proper tightening force. An object of the present invention is to provide a connection terminal for a battery electrode in which the occurrence of damage due to tightening or the like is reliably prevented.

[0011]

SUMMARY OF THE INVENTION The object of the present invention is to provide an electric wire connecting portion for connecting electric wires, a board portion having a bolt insertion hole, and a battery post extending from an end portion of the board portion. A battery electrode connection comprising a substantially cylindrical electrode grip portion to be externally fitted, and a fastening plate portion having a bolt insertion hole and extending at an end of the electrode grip portion so as to face the substrate portion. In the terminal, the detent rib for preventing rotation of the screw member provided on one of the clamping plate portion and the substrate portion has an elastically deformable contact piece abutting on the side surface of the head of the screw member. This can be achieved by the characteristic connection terminal for battery electrode.

The above object can be achieved by elastically deforming the contact piece to allow rotation of the screw member when the torque acting on the screw member exceeds a set value.

[0013] The above object can be achieved by bending one of the contact pieces so that the contact piece has a spring characteristic, one of which is a free end, and the other is integrally formed with a detent rib.

Further, the above object can be achieved by the contact piece abutting on at least one position, preferably two opposing positions on the side surface of the head of the screw member.

[0015]

In the battery electrode connection terminal of the present invention, the detent rib for suppressing the rotation of the screw member provided on one of the fastening plate portion and the substrate portion is provided.
An elastically deformable contact piece is provided for contacting the side of the head of the screw member. As a result, when the torque acting on the screw member at the time of tightening exceeds the set value, the contact piece abutting on the side surface of the head of the screw member is elastically deformed to allow the rotation of the screw member and prevents excessive tightening. I do.

That is, the tightening torque when the detent rib allows the rotation of the screw member is sufficient to electrically connect the inner peripheral surface of the electrode holding portion of the battery electrode connection terminal and the outer peripheral surface of the battery post. It is set in advance so as to correspond to an appropriate value of the necessary and sufficient tightening force. Therefore, since the contact piece elastically deformed by the set torque or more allows rotation of the screw member and prevents excessive tightening, proper tightening is completed only by simply tightening the screw member.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a connection terminal for a battery electrode according to the present invention will be described with reference to FIG. As shown in FIG. 1, a battery electrode connection terminal 20 is connected to a substantially cylindrical battery post 5 which is an electrode of a battery mounted on an automobile or the like by an electric wire 21.
Is for connecting. The battery electrode connection terminal 20 includes a board portion 3 having a bolt insertion hole 2, an electric wire connection portion 4 extending at one end of the board portion 3, and a board portion 3.
And a substantially cylindrically shaped electrode gripping portion 6 extending to the other end of the battery and fitted to the battery post 5 of the battery, and an electrode gripping portion 6 having a bolt insertion hole 7 so as to face the substrate portion 3. And a tightening plate portion 8 extending at the end of the upper portion.

The fastening plate 8 has a male screw member 19
A rotation preventing rib 22 for suppressing the rotation of the metal plate is integrally formed by bending a metal plate. This detent rib 22
A contact portion 24 which is continuous with the fastening plate portion 8, and a contact portion which extends in a tongue shape from the connection portion 24 and whose front end side comes into surface contact with the side surface of the head of the male screw member 19 to suppress rotation of the male screw member 19. And a piece 25. This contact piece 25
When the torque acting on the male screw member 19 exceeds the setting,
A spring characteristic that allows the male screw member 19 to rotate by being elastically deformed in the direction of arrow a in the figure is provided.

The spring characteristic imparted to the contact piece 25 is set so as to correspond to the tightening torque when the contact piece 25 permits the rotation of the male screw member 19 by elastic deformation. Therefore, this tightening torque corresponds to the upper limit of the necessary and sufficient tightening force for satisfactorily electrically connecting the inner peripheral surface of the electrode grip portion 6 of the battery electrode connection terminal 20 and the outer peripheral surface of the battery post 5. Things.

The battery electrode connection terminal 20 is formed such that a predetermined distance is secured between the substrate 3 and the clamping plate 8 when the electrode grip 6 can be inserted into and removed from the battery post 5. I have. With the electrode gripping part 6 fitted to the battery post 5, the substrate part 3 and the fastening plate part 8 are fixed to the battery post 5 by being tightened by the male screw member 19, the washer 11 and the female screw member (nut) 12. You. The male screw member 19 of the present embodiment is a so-called hexagonal bolt having a hexagonal head.

At the battery electrode connection terminal 20, the female screw member 12 is tightened by rotating the female screw member 12 with a wrench or the like, but the female screw member 12 is tightened until the rotation of the male screw member 19 is permitted. Thereby, the electrode gripper 6
A sufficient and sufficient tightening force for obtaining an electrical connection between the inner peripheral surface of the battery post 5 and the outer peripheral surface of the battery post 5 acts, and the battery electrode connection terminal 20 is fixed to the battery post 5 in a good state.

When the tightening torque acting on the male screw member 19 at the time of the tightening operation reaches a set value, the contact piece 25 that has restrained the rotation of the male screw member 19 is elastically deformed and the rotation of the male screw member 19 is allowed. You. That is, even if it is tightened further, the male screw member 19 runs idle,
Excessive tightening is completely prevented.

Therefore, the battery post 5 of the battery electrode connection terminal 20 can be formed by simply tightening the female screw member 12.
Appropriate tightening will be completed. Therefore,
Skill in mounting is not required, and the connection terminal for the battery electrode can be easily and reliably mounted with an appropriate tightening force, and damage due to excessive tightening or the like can be prevented.

FIG. 2 is an exploded view of a flat state after punching to obtain the battery electrode connection terminal 20. The substantially band-shaped main body 32 is curved and formed to become the electrode gripping portion 6, and the main body 32 is formed. The tip portion 34 having the hole 33 is the fastening plate portion 8, and the protruding pieces 35 formed on both sides of the tip portion 34 are the contact pieces 25 of the detent rib 22.

Next, a second embodiment of the battery electrode connection terminal according to the present invention will be described with reference to FIG. As shown in FIG. 3, the connection terminal for battery electrode 27 has a configuration in which the anticorrosion cover 15 is added to the connection terminal for battery electrode 20 shown in FIG. Therefore, except that the anti-corrosion cover 15 is attached, the configuration is the same as that of the battery electrode connection terminal 20 shown in FIG. 1, and the same operation and effect as in the first embodiment can be obtained.

Next, a third embodiment of the battery electrode connection terminal according to the present invention will be described with reference to FIGS. FIG.
As shown in FIG. 5 and FIG.
The direction of the electric wire connection portion 4 is improved so that there is no unevenness on the female screw member 12 side that hinders the fastening operation. In other words, the battery electrode connection terminal 29 has a structure in which the wire crimping piece 30 of the wire connection portion 4 protrudes toward the male screw member 19 side, and the female screw member 12 side is maintained flat.

The structure of the anti-rotation rib 22 is the same as that of the above-described embodiment. When the tightening torque acting on the male screw member 19 exceeds a set value, the contact piece 25 is elastically deformed in the direction of arrow B in the figure. The rotation of the male screw member 19 is allowed. As a result, excessive tightening is prevented, and proper and sufficient tightening for obtaining a good electrical connection is completed.

FIG. 6 is a developed view of the battery electrode connection terminal 29 in a flat state, which has a shape substantially equal to the developed views of the first and second embodiments, and has a hole 33 of a substantially band-shaped main body 32. The tip portion 34 becomes the fastening plate portion 8 and the tip portion 34
Projecting pieces 35 formed on both sides of the rib 22 serve as contact pieces 25 of the rotation preventing rib 22.

In order to impart a predetermined spring characteristic to the contact piece 25 of the rotation preventing rib 22, various bending forms other than those described above are possible. Fourth to eighth embodiments in which the contact piece 25 is bent differently will be described with reference to FIGS. FIG. 7 shows a fourth embodiment of the battery electrode connection terminal according to the present invention. It is formed by bending. FIG. 8 is an exploded view of the battery electrode connection terminal 37 in a flat plate state. The tip portion 34 having the hole 33 of the substantially belt-shaped main body portion 32 becomes the fastening plate portion 8 and extends to both sides of the tip portion 34. The contact piece 25 of the detent rib 22 is
Becomes

FIG. 9 shows a fifth embodiment of the battery electrode connection terminal according to the present invention. The battery electrode connection terminal 39 is formed by connecting the contact piece 25 of the rotation preventing rib 22 to the connecting portion 24. It is formed by bending at an acute angle. FIG. 10 is an exploded view of the battery electrode connection terminal 39 in a flat plate state. The tip portion 34 having the hole 33 of the substantially band-shaped main body portion 32 becomes the fastening plate portion 8 and extends to both sides of the tip portion 34. The projecting piece 35 becomes the contact piece 25 of the detent rib 22.

FIG. 11 shows a sixth embodiment of the connection terminal for battery electrode according to the present invention. The connection terminal 40 for battery electrode connects the contact piece 25 of the detent rib 22 to the connecting portion 24. It is formed by bending into a U-shape. The contact piece 25 is bent at its tip so as to make surface contact with two adjacent side surfaces of the head of the male screw member 19, and unlike the above-described embodiment, the same effect as described above is obtained by one detent rib 22. be able to. FIG. 12 is an exploded view of the battery electrode connection terminal 40 in a flat plate state. The tip portion 34 having the hole 33 of the substantially band-shaped main body portion 32 becomes the fastening plate portion 8 and extends to both sides of the tip portion 34. The projecting piece 35 becomes the contact piece 25 of the detent rib 22.

FIG. 13 shows a seventh embodiment of the battery electrode connection terminal according to the present invention. The battery electrode connection terminal 41 has a V-shape at the tip end contacting the side surface of the male screw member 19. It is formed by bending. FIG.
4 is a developed view of the flat state of the battery electrode connection terminal 41. The front end portion 34 having the hole 33 of the substantially band-shaped main body portion 32 becomes the fastening plate portion 8 and is formed to extend on both sides of the front end portion 34. The projecting piece 35 becomes the contact piece 25.

FIG. 15 shows an eighth embodiment of the battery electrode connection terminal according to the present invention. This battery electrode connection terminal 42 is a further improvement of the fourth embodiment shown in FIG. It was done. That is, the contact piece 25 of the detent rib 22 is bent at a right angle to the connecting part 24,
Further, the tip portion is formed by bending into a U-shape. FIG. 16 is a developed view of the battery electrode connection terminal 42 in a flat plate state, and has the same shape as the developed view of FIG. The distal end portion 34 having the hole 33 of the substantially band-shaped main body portion 32 becomes the fastening plate portion 8, and the protruding pieces 35 formed on both sides of the distal end portion 34 become the contact pieces 25 of the detent rib 22.

As described above, the contact piece 25 can be formed in various bent forms, and by changing the bent form, the spring characteristics can be further optimized, or the yield in removing the board can be improved. Becomes possible.
In the above embodiment, the example in which the rotation preventing ribs 22 are all formed on the male screw member 19 side is shown, but it is also possible to form them on the female screw member 12 side.

[0035]

According to the connection terminal for a battery electrode of the present invention, the detent rib for suppressing the rotation of the screw member provided on either the fastening plate portion or the substrate portion is provided on the side surface of the head of the screw member. An elastically deformable contact piece is provided for abutting. As a result, when the tightening torque acting on the screw member to be tightened exceeds a set value, the contact piece of the detent rib, which has suppressed the rotation of the screw member, is elastically deformed to allow the rotation of the screw member. Further, excessive tightening is prevented.

Therefore, proper tightening of the battery electrode connection terminal can be reliably completed by an easy operation of simply tightening the screw member, and occurrence of breakage due to excessive tightening or the like can be prevented. Therefore, the tightening operation is improved, and the reliability of the battery electrode connection terminal is ensured.

[Brief description of the drawings]

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

FIG. 2 is a development view of connection terminals in FIG.

FIG. 3 is an exploded perspective view of a second embodiment of the battery electrode connection terminal according to the present invention.

FIG. 4 is a perspective view of a third embodiment of a connection terminal for a battery electrode according to the present invention.

FIG. 5 is an operation explanatory view in FIG. 4;

FIG. 6 is a development view of a connection terminal in FIG. 4;

FIG. 7 is an operation explanatory view showing a fourth embodiment of the battery electrode connection terminal according to the present invention.

FIG. 8 is a development view of a connection terminal in FIG. 7;

FIG. 9 is an operation explanatory view showing a fifth embodiment of the battery electrode connection terminal according to the present invention.

FIG. 10 is a development view of a connection terminal in FIG. 9;

FIG. 11 shows a sixth connection terminal for a battery electrode according to the present invention.
It is an operation explanatory view showing an example.

FIG. 12 is a development view of a connection terminal in FIG. 11;

FIG. 13 shows a seventh connection terminal for a battery electrode according to the present invention.
It is an operation explanatory view showing an example.

14 is a development view of the connection terminal in FIG.

FIG. 15 shows an eighth connection terminal for a battery electrode according to the present invention.
It is an operation explanatory view showing an example.

16 is a development view of the connection terminal in FIG.

FIG. 17 is an exploded perspective view showing an example of a conventional connection terminal for a battery electrode.

FIG. 18 is an exploded perspective view showing another example of a conventional connection terminal for a battery electrode.

FIG. 19 is a perspective view showing an assembled state of the anticorrosion cover in FIG. 18;

[Description of Signs] 2 Bolt insertion hole (board side) 3 Board part 4 Electric wire connection part 5 Battery post 6 Electrode gripping part 7 Bolt insertion hole (tightening plate side) 8 Tightening plate 19 Male screw member 20 Battery electrode connection Terminal (first embodiment) 21 Electric wire 22 Detent rib 24 Contact part 25 Contact piece 27 Connection terminal for battery electrode (Second embodiment) 29 Connection terminal for battery electrode (Third embodiment) 37 Connection terminal for battery electrode ( Fourth embodiment) 39 Battery electrode connection terminal (Fifth embodiment) 40 Battery electrode connection terminal (Sixth embodiment) 41 Battery electrode connection terminal (Seventh embodiment) 42 Battery electrode connection terminal (Eighth embodiment) Example)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-320718 (JP, A) JP-A-6-150902 (JP, A) JP-A 6-48164 (JP, U) JP-A 6-48164 5106 (JP, U) Japanese Utility Model H5-45899 (JP, U) Japanese Utility Model 5-72049 (JP, U) Japanese Utility Model 63-54257 (JP, U) Japanese Utility Model 57-204661 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) H01M 2/20-2/34

Claims (4)

(57) [Claims] An electric wire connecting portion for connecting an electric wire, a board portion having a bolt insertion hole, and a substantially cylindrical electrode grip extending from an end of the board portion and fitted to a battery post. A battery electrode connection terminal comprising a portion and a fastening plate portion having a bolt insertion hole and extending at an end of the electrode gripping portion so as to face the substrate portion, wherein the fastening plate portion or A battery electrode, wherein a detent rib for suppressing rotation of a screw member provided on any one of the substrate portions has a resiliently deformable contact piece abutting on a side surface of the head of the screw member. Connection terminal. 2. The connection terminal for a battery electrode according to claim 1, wherein said contact piece is elastically deformed to allow rotation of said screw member when a torque acting on said screw member exceeds a set value. 3. One of the contact pieces is a free end and the other is integrally formed with the detent rib so that a spring characteristic is produced by bending.
The connection terminal for a battery electrode as described. 4. The connection terminal for a battery electrode according to claim 1, wherein the contact piece contacts at least one location, preferably two opposed locations, on the side surface of the head of the screw member.