JPH08222200A - Fastening structure for battery post terminal - Google Patents

Abstract

PURPOSE: To provide a fastening structure for a battery post terminal allowing the use of bolts available on the market and eliminating the restriction on the fastening direction. CONSTITUTION: A polygonal rotation restricting plate 53 having at least one side 53a (53b) is formed, and a through hole 55 to be inserted with a bolt 49 is bored on the rotation restricting plate 53. The rotation restricting plate 53 is provided with a whirl stop piece 59 restricting the relative rotation to the bolt 49 when it is brought into contact with one side face 61 of the head section of the bolt 49. A terminal 31 is provided with a whirl stop rib 63 restricting the rotation of the rotation restricting plate 53 around the bolt shaft X when it is brought into contact with the side 53a (53b) of the rotation restricting plate 53.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for tightening a terminal attached to a battery post.

[0002]

2. Description of the Related Art A rod-shaped electrode (battery post) erected on the upper surface of a battery is formed by tightening a connection terminal (terminal) having an electrode grip portion with a bolt.
It is electrically connected. FIG. 7 is a perspective view showing a conventional tightening structure of a battery post terminal using a square bolt, and FIG. 8 is a front view of the vicinity of the head of the square bolt.
A wire connecting portion 3 is formed at the base end of the terminal 1 made of a conductive metal plate, and the wire connecting portion 3 is crimped to the conductor of the wire 5. A board portion 7 is continuously provided on the tip side of the electric wire connecting portion 3,
The substrate portion 7 has a bolt hole 9. A cylindrically curved electrode gripping portion 11 is continuously provided on the tip side of the substrate portion 7, and the electrode gripping portion 11 is inserted into the battery post 13. A fastening plate portion 15 is extended to the tip side of the electrode gripping portion 11, and the fastening plate portion 15 has a bolt hole 17.

As shown in the figure, the base plate portion 7 and the tightening plate portion 15 are arranged facing each other with a gap, and the bolt holes 9 and 17 are coaxially arranged. A square bolt 19 having a quadrangular head is inserted into the bolt holes 9 and 17, and a nut 21 is screwed into the tip of the inserted square bolt 19. At the upper and lower edges of the base plate portion 7 and the fastening plate portion 15, anti-rotation ribs 23 projecting outward are bent, and the anti-rotation ribs 23 sandwich the side surface of the square bolt 19 facing the head (see FIG. 8). Bolt 1
9 rotation is prevented.

Therefore, when the nut 21 screwed into the tip of the square bolt 19 is rotated, the rotation of the square bolt 19 is blocked and the base plate portion 7 and the tightening plate portion 15 move in the approaching direction. Then, the electrode gripping portion 11 becomes the battery post 13
It is tightened to.

Some conventional tightening structures use hexagon bolts. FIG. 9 is a front view of the vicinity of the head portion of a hexagonal bolt in a conventional tightening structure using a hexagonal bolt. Generally, when a commercially available hexagonal bolt 25 having a shaft diameter corresponding to the bolt holes 9 and 17 (see FIG. 7) is used, since the bolt head is small, rotation of the hexagonal bolt 25 depends on the rotation preventing rib 23. Can't be stopped.
For this reason, an anti-rotation rib 27 that abuts on one side surface of the head of the hexagon bolt 25 is provided on the outer surface of the base plate portion 7. As a result, when the nut 21 screwed into the tip of the hexagon bolt 25 is rotated, the rotation of the hexagon bolt 25 is prevented from rotating.
Blocked by 7, the terminal 1 could be clamped to the battery post 13.

[0006]

However, the square bolt 19 that blocks the rotation of the bolt by bringing the head into contact with the anti-rotation rib 23 is a dedicated bolt having a quadrangular head. However, there was a problem that the cost of parts was higher than that of commercially available hexagon bolts. On the other hand, in order to make it possible to use the commercially available hexagon bolt 25, in the structure in which the rotation stopping rib 27 is provided on the outer surface of the base plate portion 7, the bolt head and the nut have the same outer shape, so that the bolt insertion direction is prevented. Only from the side of the base plate portion 7 where the rib 27 is provided, the nut 21
Was tightened only on the tightening plate portion 15 side, and the tightening direction was restricted. The present invention has been made in view of the above circumstances, and provides a tightening structure for a battery post terminal in which a commercially available hexagon bolt can be used and the tightening direction is not restricted, and cost reduction and workability reduction can be prevented. The purpose is to plan.

[0007]

In order to achieve the above object, a battery post terminal tightening structure according to the present invention has a direction in which a battery post is sandwiched between terminals having electrode gripping portions and intersects with a central axis of the battery post. In the tightening structure of the battery post terminal for tightening the electrode gripping part to the battery post by the bolt inserted into the bolt and the nut screwed to the tip of the bolt, a rotation restricting plate having at least one side is formed,
A through hole through which the bolt is inserted is drilled in this rotation restriction plate,
The rotation restricting plate is provided with a detent piece for restricting relative rotation with the bolt by abutting on one side surface of the bolt head, and a bolt shaft of the rotating restricting plate by contacting a side of the rotation restricting plate. It is characterized in that the terminal is provided with a rotation preventing rib for restricting rotation around the terminal.

[0008]

When the bolt, which is inserted through the rotation restricting plate, is inserted into the terminal, the sides of the rotation restricting plate are brought into contact with the rotation preventing ribs of the terminal, so that the terminal and the rotation restricting plate are relatively rotated. Regulated. At the same time, one side surface of the bolt head is brought into contact with the anti-rotation piece of the rotation restricting plate, and as a result, the relative rotation of the terminal and the bolt is restricted. Further, since a rotation regulating plate that is interposed between the rotation preventing rib and the bolt head and regulates relative rotation of the terminal and the bolt is provided in a state of being inserted into the bolt, in any bolt insertion direction, The rotation of the bolt with respect to the anti-rotation rib can be restricted, and the bolt insertion direction is not restricted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a tightening structure for a battery post terminal according to the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a tightening structure according to the present invention,
2 is a front view of the vicinity of the hexagonal bolt head in the tightening structure according to the present invention, and FIG. 3 is a sectional view taken along the line AA of FIG. A wire connecting portion 33 is formed at the base end of the terminal 31 made of a conductive metal plate, and the wire connecting portion 33 is crimped to the conductor of the wire 35. A board portion 37 is continuously provided on the tip side of the wire connecting portion 33, and the board portion 37 has a bolt hole 39. An electrode gripping portion 41 that is curved in a cylindrical shape is provided on the front end side of the substrate portion 37.
And the electrode gripper 41 is inserted into the battery post 43. A tightening plate portion 45 is provided on the tip side of the electrode grip portion 41.
Is extended, and the tightening plate portion 45 has a bolt hole 47.

The base plate portion 37 and the tightening plate portion 45 are arranged facing each other with a gap therebetween, and the bolt holes 39 and 47 are coaxially arranged. A commercially available hexagonal bolt 49 is inserted into the bolt holes 39 and 47, and the tip end of the inserted square bolt 49 is screwed into the nut 51. At the time of inserting the hexagon bolt 49, a square rotation restricting plate 53 is inserted into the hexagon bolt 49.
A through hole 55 is formed in the rotation restricting plate 53, and the hexagon bolt 49 is inserted into the rotation restricting plate 53 through the through hole 55. In the rotation restricting plate 53, the hexagon bolt 49 has the bolt hole 3
When it is inserted into 9, 47, it is inserted between the head portion 57 of the hexagon bolt 49 and the tightening plate portion 45. Hexagon bolt 4
When 9 is inserted from the board portion 37 side, the rotation restricting plate 53 is sandwiched between the head portion 57 and the board portion 37.

A detent piece 59 whose one side is bent outward is formed on the rotation restricting plate 53, and the detent piece 59 has a head 57 of the hexagon bolt 49 with the hexagon bolt 49 inserted in the through hole 55. Abutting against any one side surface 61 of. That is, the hexagonal bolt 49 inserted into the through hole 55 has one side surface 61 abutting against the rotation stopping piece 59, so that the rotation restricting plate 5 is provided.
The relative rotation with respect to 3 is prevented.

A detent rib 63 is formed on the upper and lower edges of the base plate portion 37 and the fastening plate portion 45 of the terminal 31 so as to project outward and is bent. The detent rib 63 is inserted into the hexagon bolt 49. The rotation restricting plate 53 is provided with a side 53a on the side of the rotation stop piece 59 and a side 5 on the side opposite to the rotation stop piece 59.
3b (see FIGS. 2 and 3) to prevent rotation of the rotation restricting plate 53. The rotation restricting plate 53 may be one in which one of the side 53a and the side 53b is brought into contact with the rotation preventing rib 63.

The operation of the battery post terminal tightening structure thus configured will be described. When the hexagonal bolt 49 having the rotation restricting plate 53 inserted therein is inserted, for example, from the bolt hole 47 on the tightening plate portion 45 side of the terminal 31, the rotation restricting plate 53 is tightened with the head 57 of the hexagonal bolt 49. It is sandwiched between the plate part 45 and the upper and lower sides 53.
The side a and the side 53b come into contact with the rotation preventing rib 63, and the rotation around the bolt insertion axis X is blocked.

In this state, when the nut 51 screwed to the tip of the hexagon bolt 49 is rotated in the fastening direction, a rotational torque acts on the hexagon bolt 49, but one side surface 61 of the head 57 rotates. The stopper 59 is brought into contact with the stopper 59 to prevent the rotation.
As a result, the base plate portion 37 and the fastening plate portion 45 are moved in the approaching direction, and the battery post 43 is fastened to the electrode gripping portion 41.

Thus, in the tightening structure of this embodiment,
The rotation restricting plate 53 that contacts the rotation preventing rib 63 of the terminal 31 and restricts relative rotation with the terminal 31 is inserted into the hexagon bolt 49, while the rotation stopper that restricts relative rotation with the hexagon bolt 49. The piece 59 is provided on the rotation restricting plate 53, and the rotation of the hexagon bolt 49 can be prevented without restricting the insertion direction of the hexagon bolt 49.

According to the above-mentioned tightening structure, the commercially available hexagonal bolt 49 can be used, and the cost of parts can be reduced as compared with the case where the dedicated square bolt is used. In addition, the rotation restricting plate 53 inserted into the hexagon bolt 49
Since the rotation is blocked by either of the rotation preventing ribs 63 provided on the base plate portion 37 or the tightening plate portion 45, the insertion direction of the hexagon bolt 49 is not restricted.

Next, a modified example of the rotation restricting plate 53 will be described with reference to FIG. FIG. 4 is a perspective view of a rotation restricting plate provided with a rotation stopping protrusion. In this example, a rotation stopping piece 59 similar to the above is provided in the middle of the rotation restricting plate 65, and
A rotation restricting piece 67 is provided by bending the piece 65a on the side where the anti-rotation piece 59 projects. The rotation stopping piece 59 is provided with a hexagonal bolt 49 that is inserted into the through hole 55 of the rotation restricting plate 65.
The head portion 57 contacts one side surface 61 of the head portion 57 to regulate the rotation of the hexagon bolt 49. On the other hand, the rotation restricting plate 65 itself has the side 65a on the side of the rotation restricting piece 67, like the above-described rotation restricting plate 53.
Then, the side 65b on the opposite side of the rotation restricting piece 67 is sandwiched between the rotation preventing ribs 63, and the rotation is blocked.

In the tightening structure using the rotation restricting plate 65, since the rotation of the hexagon bolt 49 is blocked by the detent piece 59 provided on the surface of the rotation restricting plate 65, a bolt having a small head portion. It is possible to easily prevent the rotation of the
The distance between the 5a and the side 65b can be freely designed, and the rotation restricting plate 65 can be formed in correspondence with various terminals 31 having different distances between the upper and lower anti-rotation ribs 63. In the above description, the rotation restricting piece 67 is provided and the rotation restricting piece 67 abuts against the rotation preventing rib 63 to prevent the rotation of the rotation restricting plate 65 itself. It is also possible to omit the piece 67 and prevent the rotation by abutting the side 65a and the side 65b. Also, the side 65a and the side 6
At least one of 5b may be in contact with one of the upper and lower anti-rotation ribs 63.

Next, an application example of the tightening structure according to the present invention will be described. FIG. 5 is an explanatory diagram when applied to a lead terminal tightening structure, and FIG. 6 is an explanatory diagram when applied to a terminal tightening structure having an anticorrosion cover. In the tightening structure shown in FIG. 5, the tip 75 of the lead terminal 73, to which the electric wire 71 is connected at the base end, is divided into two parts with a cylindrical space-shaped electrode gripping portion 77 interposed therebetween. A through hole 79 is formed in the tip 75, and the forked tips 75 are separated from each other through the through hole 79.
The battery post 43 is tightened in a state of being inserted into the electrode gripping portion 77 by the hexagonal bolt 49 inserted through and the nut 51 screwed to the tip of the bolt. At this time, the above-described rotation restricting plate 53 is inserted into the hexagon bolt 49, and the rotation restricting plate 53 has a side 53 b on the opposite side of the detent piece 59, which is a stepped detent formed on the lead terminal 73. It is designed to abut the surface 81.

Therefore, when the nut 51 is tightened, the head 57 of the hexagon bolt 49 comes into contact with the anti-rotation piece 59 to prevent its rotation, and the rotation restricting plate 53 causes the anti-rotation surface 8 to rotate.
The rotation of the hexagon bolt 49 is prevented by abutting against the screw 1, and the nut can be tightened while the rotation of the hexagonal bolt 49 is blocked.

Further, in the tightening structure shown in FIG. 6, the terminal 93 is connected to the upper surface of the anticorrosion cover 91 through which the battery post 43 is inserted. A bolt 95 serving as a connecting means is planted in a standing state at the base end of the terminal 93. On the other hand, the tip 97 of the terminal 93 is bifurcated with the columnar space-shaped electrode gripping portion 99 interposed therebetween. A through hole 101 is formed in the tip 97, and the forked 97 are divided into two parts by a hexagonal bolt 49 inserted in the through hole 101 and a nut 51 screwed to the tip of the bolt to fix the battery post 43 to an electrode gripping portion. It is tightened with it inserted in 99. A standing plate 103 that is sandwiched between the tips 97 is formed on the anticorrosion cover 91, and the standing plate 103 prevents excessive tightening of the tips 97.

Also in this tightening structure, the hexagon bolt 4
The rotation restricting plate 53 described above is inserted into the rotation restricting plate 5.
3, the side 53b on the opposite side of the detent piece 59 contacts the stepped detent surface 105 formed on the terminal 93. Therefore, when the nut 51 is tightened, the hexagon bolt 49 comes into contact with the anti-rotation piece 59 to prevent rotation, and the rotation restricting plate 53 comes into contact with the anti-rotation surface 105, as in the above-described application example. Rotation is blocked,
It is possible to tighten the nut while the rotation of the hexagon bolt 49 is blocked.

[0023]

As described in detail above, according to the battery post terminal tightening structure of the present invention, the rotation restricting plate is provided so that it can be inserted into the bolt, and is abutted on the head of the bolt so that the bolt can be removed. Since a detent piece for regulating the relative rotation of the rotation regulating plate is provided on the rotation regulating plate, and a detent rib for regulating the rotation of the rotation regulating plate by contacting the rotation regulating plate is provided on the terminal, Since the rotation of the bolt having the head of a size can be restricted and a commercially available bolt can be used, the cost of parts can be reduced. Further, since a rotation regulating plate that is interposed between the rotation preventing rib and the bolt head and regulates relative rotation of the terminal and the bolt is provided in a state of being inserted into the bolt, in any bolt insertion direction, Since the rotation of the bolt with respect to the anti-rotation rib can be restricted and the bolt insertion direction is not restricted, it is possible to prevent the workability from being lowered.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a tightening structure according to the present invention.

FIG. 2 is a front view of the vicinity of a hexagon bolt head in the tightening structure according to the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a perspective view of a rotation restricting plate provided with a rotation stopping protrusion.

FIG. 5 is an explanatory view when the tightening structure according to the present invention is applied to a lead terminal tightening structure.

FIG. 6 is an explanatory view when the tightening structure according to the present invention is applied to a terminal tightening structure having an anticorrosion cover.

FIG. 7 is a perspective view showing a tightening structure of a conventional battery post terminal using a square bolt.

FIG. 8 is a front view of the vicinity of the head of the square bolt.

FIG. 9 is a front view of the vicinity of the hexagonal bolt head in the conventional tightening structure using the hexagonal bolt.

[Explanation of symbols]

 31 Terminal 41 Electrode Grip 43 Battery Post 49 Bolt 51 Nut 53 Rotation Control Plate 53a (53b) Side 55 Through Hole 57 Bolt Head 59 Rotation Stopper 61 Head Side 63 Rotation Rib

Claims (3)

[Claims] 1. A battery post is sandwiched between terminals having an electrode gripping portion, and the electrode gripping portion is formed by a bolt inserted in a direction intersecting a central axis of the battery post and a nut screwed to the tip of the bolt. In a battery post terminal tightening structure for tightening a battery post, a rotation restricting plate having at least one side is formed, and a through hole through which the bolt is inserted is formed in the rotation restricting plate, and A rotation stopper piece that restricts relative rotation with the bolt by contacting one side surface is provided on the rotation restricting plate, and a bolt shaft of the rotation restricting plate by contacting the side of the rotation restricting plate. A tightening structure for a terminal for a battery post, characterized in that a detent rib for restricting rotation around X is provided on the terminal. 2. The rotation preventing plate is formed in a quadrangle, and the detent piece is formed by bending one side of the rotation restricting plate in the direction of one plate surface. Battery post terminal tightening structure. 3. The structure for tightening a terminal for a battery post according to claim 1, wherein the bolt is a hexagonal bolt.