JPH0648164U - Battery terminal - Google Patents

Abstract

(57) [Summary] [Purpose] Attach the battery terminal to the battery post by tightening the bolt from the vertical direction with a tightening tool, and forcibly remove the bolt from the tightening tool when it is completely fixed. [Constitution] The tapered surface of the fastener is brought into contact with the outer end surfaces of the left and right tightening plate portions formed at the free ends of the electrode fitting portions of the terminal body, and the fastener is lowered by bolting to taper. In the battery terminal in which the clamping plates are moved toward each other by the surface to close the free end of the electrode fitting part and fixed to the battery post, it can be attached to and detached from the upper surface of the clamping plate of the terminal body. An anti-rotation member is arranged at the end of the anti-rotation member so that the anti-rotation member rises in conjunction with the tightening plate portion that rises relative to the descent of the tightening tool when tightening the bolt. At the end of tightening the bolt, remove the automatic bolt tightening tool located on the outer peripheral surface of the upper end of the bolt head.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a battery terminal attached to an electrode (battery post) of a battery mounted on an automobile or the like, and particularly, a battery terminal is attached by vertically bolting with a bolt automatic tightening tool from above. When completely fixed, the bolts are forcibly removed from the automatic bolt fasteners.

[0002]

[Prior art]

 Conventionally, in this type of battery terminal, a ring-shaped electrode fitting portion is externally fitted to a battery post protruding from the battery, and a continuous board portion is connected to the free end of the electrode fitting portion by bolts and nuts. Are arranged and fixed from the horizontal direction with an automatic tightening tool such as an impact wrench.

In recent years, the number of installed parts in the engine room of a vehicle has become extremely large and the density has increased, and when tightening from the horizontal direction, interference with other installed parts makes it difficult to perform tightening work. There were various problems, such as a short circuit if the impact lench comes into contact with the negative side post while tightening the post, and a vehicle fire will occur in the worst case.

To solve the above problem, as shown in FIGS. 4 (A) and 4 (B), the base plate 3 b and the fastening plate part 3 c are opposed to each other in the terminal body 3 so as to have a taper that expands downward. On the other hand, a caulking plate 5 is formed on both sides of the board portion 3b and the clamping plate portion 3c. The caulking plate 5 is spread downward, and bolts 4 are tightened from above so that the caulking plate 5 forms a board portion 3b. There is provided a battery terminal in which the tightening plate portion 3c is tightened so that the electrode fitting portion 3a is pressed and fixed to the post 2 of the battery 1. (Jpn. Publication No. 4-9736)

[0005]

[Problems to be solved by the device]

 Usually, in the vehicle assembly line, bolt tightening work is performed using an impact wrench, and various bolt tightening work is performed in a flow work, so torque control of the impact wrench corresponding to each work is not performed. Therefore, the bolt tightening with the impact wrench was done by the operator's experience and visual inspection of the bolt tightening condition.

The bolting of battery terminals is also usually not torque controlled. Therefore, even though the electrode fitting part of the terminal body is completely pressed into contact with the battery post due to the bolt tightening work, excessive tightening force may be applied. In the battery terminal of the above-mentioned conventional example, if excessive tightening force is applied, the battery post 2 will rotate in the X direction in FIG. 4 (A), and in the worst case, the battery terminal Problems such as damage to the connected wires may occur.

[0007] On the other hand, there are cases where the tightening work is completed in an incompletely bolted state, and in this case, the battery terminal is incompletely fixed to the battery post, which causes backlash. There is a drawback that poor contact occurs.

The present invention has been made in view of the above problems, and when a battery terminal is bolted using an un-torque controlled impact wrench, the battery terminal is completely attached to the battery post. The impact wrench is configured to be forcibly removed from the bolt when it is fixed, thus providing a battery terminal that can prevent excessive bolt tightening and incomplete bolt tightening.

[0009]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, in the present invention, a taper extending downward from the fastener is attached to the outer end surfaces of the left and right clamping plate portions formed continuously at the free ends of the annular electrode fitting portion of the terminal body. Abutting surfaces, the fastener is vertically lowered by bolting, and the tightening plates are moved horizontally by the taper surface so that they are close to each other, and the free end of the electrode fitting portion is closed to close the terminal. In a battery terminal that secures the main body to a battery post, a rotation prevention member is detachably placed on the upper surface of the tightening plate of the terminal main body, and rises relative to the lowering of the tightening tool when tightening the bolt. The anti-rotation member is lifted in conjunction with the tightening plate part, and the tip of the anti-rotation member is located on the outer peripheral surface of the upper end of the bolt head at the end of bolt tightening and the automatic bolt tightening tool is removed. It is configured to It provides a battery terminal that

More specifically, the above-mentioned fastener has an inverted U-shape consisting of an upper surface portion and both side portions, is provided with notches having the above tapered surfaces on both side portions, and has bolt holes and leg through holes on the upper surface portion. On the other hand, the rotation preventing member is provided with a head portion that is fitted onto the outer peripheral surface of the bolt head, and a leg portion that hangs down from the head portion and penetrates the leg through hole of the fastener. Place the lower end of the bolt on the upper surface of the tightening plate of the terminal body, use a long head for the bolt, and use the bolt automatic tightening tool consisting of an impact wrench at the temporary fixing position of the bolt. The head can be engaged with the head, and the impact wrench is detached from the head of the bolt by the head portion of the rotation preventing member when the bolt is tightened.

[0011]

[Action]

 In the battery terminal of the present invention, when the bolt is tightened with an automatic bolt tightening tool such as an impact wrench, the rotation prevention member rises according to the tightened state of the bolt, and the electrode fitting part is connected to the battery.・ The head of the anti-rotation member becomes almost flush with the upper surface of the bolt head when the bolt is tightened by pressing it against the post and the automatic bolt tightening tool is forcibly removed from the bolt head. Let Therefore, even if an impact wrench without torque control is used, excessive tightening force will not be applied. Therefore, it is possible to prevent the battery terminal itself from rotating around the battery post generated by the excessive tightening force on the bolt.

Further, in the above battery terminal, since the bolt automatic tightening tool does not come off from the bolt head unless the battery terminal is completely fixed, the battery terminal should be attached to the battery post in an incompletely fixed state. Can be prevented, and therefore contact failure does not occur.

[0013]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the battery terminal 10 of the present invention comprises a terminal body 11, a fastening tool 12, a rotation preventing member 13, a bolt 14, a nut 15 and a ring 16.

The terminal body 11 is a sutto type, and is formed by bending a single metal plate into two as shown in the figure, and a stud bolt 18 is projected on the wire connection portion 17 at one end to crimp the wire. The terminal (not shown) is tightened with a nut (not shown) to connect.

In the terminal main body 11, the upper portion 11a and the lower portion 11b, which are roughly the same shape, are bent at a curved portion 11c on one end side and arranged vertically opposite to each other. The portion 20 and the tightening plate portion 21 are formed. Specifically, both the upper side portion 11a and the lower side portion 11b are provided with substantially rectangular wire connecting portions 17A, 17B at one end, and the annular electrode fitting portions 20A, 20B are connected to the wire connecting portions 17A, 17B. I have set up. Cylindrical portions 20A-1 and 20B-1 are provided upright along the inner peripheral edges of these electrode fitting portions 20A and 20B.

The tip ends of the electrode fitting portions 20A, 20B are in an open state as shown in the drawing, and continuous fastening plate portions 21A, 21A ', 21B, 21B' are provided at the respective free ends. In addition, the upper tightening plate portions 21A and 21A 'are provided with locking recesses 22 for locking the rotation preventing member 13 at predetermined positions on the upper surface.

Further, the right side tightening plate parts 21A and 21B and the left side tightening plate parts 21A ′ and 21B ′ are connected to each other by bent parts 21C and 21C ′, and the left and right tightening plate parts 21A and 21A ′ are connected. , 21B and 21B 'are provided with a gap S.

[0018] Furthermore, at the outer end of the upper tightening plate portions 21A and 21A ', sliding parts 21A-1 and 21A'-1 slanting downward are provided so as to project, and the other lower tightening plate portion Slide portions 21B-1 and 21B'-1 (21B'-1 is shown in FIG. 2) inclined upward inward are provided at the outer ends of the portions 21B and 21B '.

The fastener 12 has a substantially inverted U-shape having an upper surface portion 12a and both side portions 12b and 12c, and has a bolt hole 24 formed at the center of the upper surface portion 12a and Four leg through holes 25 are provided at the four corners of the turn so as to correspond to the positions of the recesses 22 of the terminal body 11.

Further, as shown in the drawing, on both side portions 12b, 12c projecting vertically from both ends of the upper surface portion 12a, cutout portions 26, 27 having lower end openings are provided in the central portion, and these cutout portions 26, 27 are provided. Tapered surfaces 26a, 26b, 26a ', 26b', 27a, 27b, 27a ', 27b' are formed on the left and right end faces of the taper, which are horizontally opposed and extend downward in two steps. The continuous portions of the surfaces 26a to 27b 'are projecting surfaces 26c, 26c', 27c, 27c '.

The anti-rotation member 13 has an annular bolt head external fitting hole 28 formed in the rectangular head portion 13a, and projects the leg portion 29 downward from the bottom corner of the head portion 13a. I have set up. The inner diameter of the bolt head outer fitting hole 28 is set to be slightly larger than the outer shape of the head portion 14a of the bolt 14, and the bolt head 14a is rotatable inside the bolt head outer fitting hole 28.

Further, the leg portion 29 can be inserted into the leg portion through hole 25 of the fastener 13, and the tip end of the leg portion 29 can be inserted into the concave portion 22 of the terminal body 11 to be locked. As described above, the respective positions and outer shapes are associated with each other.

As shown in FIG. 2, the battery terminal 10 is in a temporarily fixed state before being attached to the battery post 2, and in the temporarily fixed state, the leg portion 29 of the rotation preventing member 13 is tightened as described above. It is inserted into the leg through hole 25 of the tool 12 and is projected inside by a predetermined length L1.

The bolt 14 is configured such that the shaft portion 14 b penetrates the bolt head outer fitting hole 28 of the rotation preventing member 13 and the bolt hole 24 of the fastener 12 and is screwed to the nut 15. Further, a ring mounting groove 14c is provided above the shaft portion 14b of the bolt 14, and after passing through the bolt hole 24, the ring 16 is assembled in the ring mounting groove 14c, and when the bolt 14 is loosened and lifted, it is tightened. The attachment 12 is interlocked and raised.

Further, the bolt 14 exposes the bolt head 14a from the head portion 13a of the rotation preventing member 13 when the battery terminal 10 is temporarily fixed, and this exposed height is L2. The exposed height L2 is the same (L1 = L2) as the length L1 in which the leg portion 29 of the rotation preventing member 13 is projected inside the fastener 12.

The nut 15 is provided between the upper tightening plate parts 21A and 21A ′ and the lower tightening plate parts 21B and 21B ′, and the screw hole 15a is connected to the right tightening plate parts 21A and 21B. It is interposed so as to be located in the gap S between the left tightening plate portions 21A 'and 21B'.

Next, an assembling process of the battery terminal 10 having the above-described structure to the battery post 2 will be described. Before attaching the battery terminal 10 to the battery post 2, as shown in FIG. 2, the taper surfaces 26a to 27b 'of the fastener 12 are slidably attached to the sliding portions 21A-1 to 21B' of the terminal body 11 from above. Contact -1. Next, the shaft portion 14b of the bolt 14 is passed through the bolt hole 24 of the tightening tool 12 from above, and is screwed onto the nut 15 interposed inside the tightening plate portions 21A to 21B '. Then, the leg portion 29 of the anti-rotation member 13 is passed through the leg hole 25 of the fastener 12, the head portion 13a is externally fitted to the bolt head portion 14a, and the lower end of the leg portion 29 is attached to the terminal body 11. Insert the battery terminal 10 into the recess 22 to temporarily fix the battery terminal 10. The rotation preventing member 13 may be attached to the fastener 12 before attaching the bolt 14.

In the temporarily fixed state, the head portion 13a of the rotation preventing member 13 has the lower end portion of the bolt head 14a fitted onto it, but since the bolt head 14a is set to be long, the head portion 13a is The length of the bolt head 14a not surrounded by 13a is relatively large.

Both side portions 12b and 12c of the fastener 12 slidably contact the sliding portions 21A-1 to 21B'-1 at the outer end portions of the fastening plate portions 21A to 21B 'of the terminal body 11. I am in contact. Since the cutouts 26 and 27 are similar, a detailed description of the cutout 27 will be omitted.

In the temporarily fixed state, there is a space S between the fastening plate portions 21A and 21A ', 21B and 21B' on both sides, and the electrode fitting portion continuous with these fastening plate portions 21A to 21B '. The free ends of 20A and 20B are in a wide open state. Therefore, the work of fitting the battery terminal 10 in the temporarily fixed state onto the battery post 2 can be easily performed.

Next, as shown in FIG. 3A, the impact wrench 30 is attached to the bolt head 14a. At this time, since the bolt head 14a has a large portion that is not surrounded by the head portion 13a of the rotation preventing member 13, the impact wrench 30 can be fitted.

The impact wrench 30 attached to the bolt head 14a tightens the bolt 14 downward from vertically upward. By this tightening operation, the above-mentioned tightening tool 12 moves downward, and the tapered surfaces 26a to 26b 'of the notch 26 project outward from the left and right tightening plate parts 21A to 21B'. Press ~ 21B'-1 inward.

The lowering of the fastening tool 12 causes the fastening plate portions 21A to 21B ′ to move relatively upward via the nut 15, and the upward movement of the fastening plate portions 21A to 21B ′ causes the fastening plate portion 21A to 21B ′ to move upward. The anti-rotation member 13 having the leg portions 29 that are locked to the attached plate portions 21A and 21A 'is interlocked and rises.

When the tightening work of the bolt 14 is continued and the battery terminal 10 is completely fixed to the battery post 2, as shown in FIG. 3 (B), the upper tightening plate portions 21 A and 21 A ′ are It abuts on the upper surfaces of the notches 26 and 27 of the fastener 12. In this state, the bolt head external fitting hole 28 of the rotation preventing member 13 and the upper surface of the bolt head 14a are substantially flush with each other due to the relationship of L1 = L2. Therefore, the impact wrench 30 is forcibly detached from the bolt head portion 14a so that the bolt 14 cannot be tightened.

As described above, the vertical tightening force of the bolt 14 is converted to the horizontal direction through the tapered surfaces 26a to 27b ′ of the tightening tool 12, and the left and right tightening plate portions 21A and 21A ′, 21B and 21B 'move toward each other and clamp the free ends of the continuous electrode fittings 20A, 20B in the closing direction. Therefore, the electrode fitting portions 20A and 20B are pressed against the outer peripheral surface of the battery post 2, and the battery terminal 10 is connected and fixed to the battery post 2.

On the other hand, in the battery terminal 10, the leg 29 of the rotation preventing member 13 is inserted into the leg through hole 25 of the fastener 12 and is inserted into the recess 22 of the terminal body 11, so that the battery 29 is pulled out. It can be easily removed. Therefore, when removing the battery terminal 10 from the battery post 2, the rotation preventing member 13 is removed to expose the bolt head 14a, and the bolt wrench 30 is engaged with the bolt head 14a so that the bolt 14 can be removed. Loosen and remove the battery terminal 10 from the battery post 2.

The battery terminal of the present invention is not limited to the above configuration. For example, the lower end of the leg portion of the rotation prevention member is fixed to the terminal body by forming a recess, but without forming the recess, It is also possible to just make contact with the upper surface of the tightening plate portion.

Further, the rotation preventing member is formed by projecting legs from the corners of the rectangular head portion, but is not limited to this shape. That is, when the battery terminal is completely fixed to the battery post, a part of the rotation preventing member is located on the outer periphery of the upper end of the bolt head to forcibly disengage the impact wrench from the bolt. good.

[0039]

[Effect of device]

 As is clear from the above description, in the battery terminal of the present invention, when mounted on the battery post, the impact wrench tightens the bolts, and when the battery terminal is completely fixed, the upper end surface of the rotation prevention member has the bolt head The impact wrench is forcibly removed from the bolt because it is located on the upper edge of the outer circumference. Therefore, even if the battery terminal is attached to the battery post using an impact wrench with no torque control on the assembly line, excessive tightening force is not applied to the bolt. Therefore, the battery terminal itself does not rotate due to excessive tightening force.

Further, the battery terminal of the present invention is set so that the bolt is completely fixed when it is detached from the impact wrench, so that the tightening work is easy and the tightening is insufficient. It is possible to prevent the contact failure due to.

Furthermore, since the tightening work can be performed without taking into consideration problems such as excessive tightening of bolts and insufficient tightening, workability can be improved. However, due to lack of experience in tightening work, it has various advantages such as not damaging parts.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state before assembly of a battery terminal of the present invention.

FIG. 2 is a front view showing a state after assembling the battery terminal.

FIG. 3A is a front view showing a bolt before tightening and FIG. 3B shows a bolt after tightening.

4A is a perspective view showing a conventional battery terminal, and FIG. 4B is a sectional view for explaining the operation of FIG.

[Explanation of symbols]

2 Battery Post 10 Battery Terminal 11 Battery Main Body 12 Tightening Tool 13 Rotation Preventing Member 14 Bolt 14a Bolt Head 15 Nut 24 Bolt Hole 25 Leg Through Hole 26,27 Notch 26a, 26a ', 26b, 26b', 27a, 27a ', 27
b, 27b 'Tapered surface 28 Bolt head external fitting hole 29 Leg 30 Impact wrench

Claims (2)

[Scope of utility model registration request] 1. Outer end surfaces of left and right tightening plate portions formed continuously at free ends of the annular electrode fitting portion of the terminal body, respectively.
The taper surface that spreads downward of the fastener is brought into contact, and the fastener is vertically lowered by bolting, and the taper surface moves the fastening plate portions in the horizontal direction in which they are close to each other. In a battery terminal in which the free end is closed and the terminal body is fixed to the battery post, a rotation prevention member is detachably placed on the upper surface of the tightening plate part of the terminal body, and the tightening tool descends when the bolt is tightened. The rotation preventing member is moved up in association with the tightening plate portion that rises relative to the bolt, and the tip of the rotation preventing member is located on the outer peripheral surface of the upper end of the bolt head when the bolt is tightened. Battery terminal configured to release the automatic tightening tool. 2. The fastener is an inverted U-shape having an upper surface portion and both side portions, notches having the tapered surface are provided on both side portions, and bolt holes and leg through holes are provided on the upper surface portion. On the other hand, the rotation preventing member is provided with a head portion externally fitted to the outer peripheral surface of the bolt head, and a leg portion pendent from the head portion and penetrating through the leg portion through hole of the fastening tool. Place the lower end on the upper surface of the tightening plate of the terminal body, use a bolt with a long head, and attach the bolt tightening tool consisting of an impact wrench to the bolt head at the temporary fixing position of the bolt. The battery terminal according to claim 1, wherein the impact wrench is disengaged from the bolt head by the head portion of the rotation preventing member when the bolt is tightened.