JP2013004218A - Attachment structure for battery terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable positioning of a battery terminal with a simple structure while saving a space.SOLUTION: To a battery 10, a battery post 12 having a circular cross section is provided to stand on a pedestal 13. A substantially-annular post connector 21 of a battery terminal 20 is fitted to the battery post 12 and then fastened so that a diameter thereof is reduced, and thereby, the battery terminal 20 is fixed to the battery post 12. A positioning mechanism A comprising an engaging part 16 and an engaged part 31 engaged with each other in a form where the post connector 21 is fitted to the battery post 12 to restrict rotation of the post connector 21 around an axis line of the battery post 12, is formed between the pedestal 13 of the battery post 12 and the post connector 21 of the battery terminal 20.

Description

  The present invention relates to a structure for attaching a battery terminal to a battery post.

  Conventionally, as an example of a structure for attaching a battery terminal to a battery, the following is known. In this type, the battery terminal is formed in a substantially annular post connection portion that can be fitted to the battery post and the diameter of the post connection portion can be reduced, and a terminal connection portion in which a stud bolt connected to the mating terminal is erected is provided integrally. It is. Then, after the post connection portion of the battery terminal is fitted to the battery post erected on the battery, the diameter of the post connection portion, that is, the battery is reduced by operating the fastening tool provided on the post connection portion. The terminal is fixed to the battery post. After that, the bolt insertion hole of the mating terminal connected to the end of the electric wire is inserted into the stud bolt of the terminal connection part, and the mating terminal is fixed to the battery terminal by screwing and tightening the nut to the stud bolt. The connection is fixed (see Patent Document 1 below).

JP 2009-187696 A

  By the way, when fixing the battery terminal to the battery post, the orientation for fixing the battery terminal by itself is determined in order to secure a space for performing the tightening operation of the clamping member of the post connecting portion and the mating terminal. However, when the post connection part of the battery terminal is first fitted to the battery post, the post connection part, that is, the battery terminal is connected to the axis of the battery post before the tightening operation is performed. There is a possibility that it may rotate and be displaced.

For this reason, since it is necessary to perform a subsequent tightening operation of the tightening tool while paying attention to the positional deviation of the battery terminal, the work efficiency may be deteriorated.
In order to avoid this, the positioning piece is integrally extended from the battery terminal and locked to a predetermined wall of the battery, or positioning is performed as a separate member on the battery terminal. It has also been proposed to position the battery against the wall of the battery, but there is a desire for a new measure because the battery terminal itself is enlarged and the structure for positioning is complicated.
The present invention has been completed based on the above circumstances, and an object of the present invention is to enable positioning of the battery terminal with a simple structure and space saving.

  In the battery terminal mounting structure of the present invention, a battery post having a circular cross section is erected on a pedestal on the battery, and a substantially annular post connecting portion fitted to the battery post is connected to a mating terminal. A battery terminal provided integrally with a terminal connection portion to be connected is provided, and the post connection portion of the battery terminal is fitted to the battery post and then tightened to reduce the diameter, whereby the battery terminal is In what is fixed to the battery post, between the pedestal of the battery post and the post connection portion of the battery terminal, the post connection portion is engaged with each other in a form fitted to the battery post. And a positioning mechanism comprising an engaging portion and an engaged portion for restricting the post connecting portion from rotating about the axis of the battery post. Characterized in place is formed.

When the post connection part of the battery terminal is properly fitted to the battery post, the rotation is restricted by the positioning mechanism provided between the base of the battery post and the post connection part, that is, the battery terminal is positioned. .
By providing the engaging portion that constitutes the positioning mechanism on the base of the battery post, the engaged portion can be set to the post connecting portion in the battery terminal, and in addition to the necessity of a separate member for positioning, The battery terminal can be changed little in shape and the size can be avoided, and the space for positioning the positioning mechanism can be accommodated within the space for the battery terminal so that the space can be saved.

The following configuration may also be used.
(1) A straight portion is provided on the outer peripheral surface of the pedestal of the battery post, and a flat leg piece facing the straight portion is suspended from a lower edge of the post connection portion of the battery terminal. Thus, the positioning mechanism is configured.
The rotation of the post connection part, that is, the battery terminal is regulated by the straight part of the outer peripheral surface of the pedestal and the leg piece at the lower edge of the post connection part coming in contact with each other in the form of straight lines.

(2) On the lower edge side of the post connection portion of the battery terminal, a pedestal fitting portion that can be fitted to the outside of the pedestal is provided, and an outer peripheral surface of the pedestal and an inner peripheral surface of the pedestal fitting portion are provided. The positioning mechanism that forms a protrusion and a recess that are fitted to each other on one and the other, and that restricts the rotation of the post connecting portion by contacting the side surface of the protrusion with the opposite side surface of the recess. Is configured.
When the side surface of the protrusion comes into contact with the side surface of the recess into which the protrusion is fitted, the rotation of the post connection portion, that is, the battery terminal is restricted.

  (3) The post connecting portion in the battery terminal is provided with a pair of extending pieces extending from both ends of the holding portion formed in a substantially annular shape so as to hold the battery post, and the pair of extending pieces. The holding portion is adapted to be reduced in diameter by being tightened by a fastening tool, and a bolt is set up at the terminal connecting portion, and a bolt insertion hole of the mating terminal is inserted into the bolt. The mating terminal is connected and fixed by tightening a nut screwed to the bolt.

  According to the present invention, the battery terminals can be positioned with a simple structure and space saving.

The front view of the state before attaching the battery terminal which concerns on Embodiment 1 of this invention to a battery post Top view of the standing part of the battery post Top view of battery terminals Sectional drawing which shows operation | movement which fits the battery terminal post connection part to a battery post. Top view of the battery post with the post connection part of the battery terminal fitted Front view Sectional view of the battery terminal post connection part fixed to the battery post The top view of the battery post and battery terminal which concern on Embodiment 2 of this invention Top view of the battery post with the post connection part of the battery terminal fitted

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, as shown in FIG. 1, the case where the battery terminal 20 is connected with respect to the battery post 12 standingly arranged by the battery 10 mounted in a motor vehicle etc. is illustrated.

  As shown in FIG. 2, the battery 10 has a structure in which a battery post 12 is placed on a pedestal 13 at a predetermined position on the upper surface of the battery body 11. The battery post 12 is formed in a truncated cone shape whose upper surface side is gradually reduced in diameter by lead or the like, and the pedestal 13 is roughly formed in a disk shape that is slightly larger than the lower surface of the battery post 12.

  As shown in FIG. 3, the battery terminal 20 is formed by pressing a thick metal plate having excellent conductivity, and the post connection portion 21 connected to the battery post 12 and a mating terminal (see FIG. 3). (Not shown) and a terminal connection portion 40 to be connected are integrally formed side by side.

  The post connection portion 21 includes a holding portion 22 having a ring shape of slightly more than 3/4 circle that is externally fitted to the battery post 12 and a pair of extensions that are extended from both ends of the holding portion 22 so as to face each other. It consists of a piece 23. The holding portion 22 has an inner diameter that can be fitted to the battery post 12 with a clearance in a natural state. As shown in FIG. 4, a plurality of vertically oriented grooves 24 for biting are formed in the peripheral surface of the holding portion 22.

  Bolts 25 are inserted through the pair of extending pieces 23, and the bolts 25 themselves are prevented from rotating, and nuts 26 are screwed onto projecting end sides of the bolts 25 from one extending piece 23. ing. Then, by tightening the nut 26, the distance between the two extending pieces 23 is narrowed, and as a result, the holding portion 22 is reduced in diameter and fixed to the battery post 12.

  The terminal connection part 40 is provided on a top surface of a base 41 having a flat box shape so as to stand up with a stud bolt 42 being prevented from rotating. The mating terminal connected to the end of the electric wire is placed on the base 41 by inserting the bolt insertion hole formed in the mating terminal into the stud bolt 42, and a nut (not shown) is screwed onto the stud bolt 42. By tightening together, the mating terminal is pressed against the base 41 and fixed.

  Now, a positioning mechanism A (see FIG. 5) for the battery terminal 20 is provided. First, as shown in FIG. 2, the base 13 of the battery post 12 has a pair of overhanging portions 15 having a predetermined width at a line symmetrical position with a center line x facing in the front-rear direction on the outer peripheral surface thereof. The projecting ends are formed so that the projecting end edges of both projecting portions 15 are linear portions 16 (corresponding to “engagement portions” of the present invention) parallel to each other.

  On the other hand, as shown in FIG. 3, the post connection part 21 of the battery terminal 20, more specifically, the center line y along the connecting direction with the terminal connection part 40 in the outer peripheral edge of the lower end of the holding part 22. A pair of leg pieces 30 are formed at line-symmetric positions with respect to each other. As shown in FIG. 1, the leg piece 30 has a shape in which a protruding piece having the same width as the protruding portion 15 of the pedestal 13 protrudes in the horizontal direction and then is bent at a right angle downward. That is, the hanging parts 31 of both leg pieces 30 are parallel to each other, and the distance between the inner surfaces of both hanging parts 31 is slightly larger than the distance between the linear parts 16 of the overhanging part 15 of the base 13. Is set. Therefore, the hanging portion 31 of the leg piece 30 corresponds to the “engaged portion” of the present invention.

  In this embodiment, the battery terminal 20 is attached with the position of the leg piece 30 adjusted to the position of the overhanging portion 15 of the pedestal 13 and the holding of the post connecting portion 21. The part 22 is fitted on the battery post 12. When the lower end of the holding portion 22 is placed on the pedestal 13, as shown in FIGS. 5 and 6, the hanging portion of the leg piece 30 is placed outside the straight portion 16 of each overhang portion 15 of the pedestal 13. 31 fits in with some clearance. In other words, the linear portion 16 of the overhanging portion 15 and the linear inner surface of the hanging portion 31 of the leg piece 30 face each other.

  Here, when the post connecting portion 21 of the battery terminal 20, that is, the holding portion 22 is about to rotate around the axis of the battery post 12, the straight portion 16 of the overhang portion 15 and the hanging portion of the leg piece 30 facing the straight portion 16. When the straight portions having a certain length such as 31 come into contact with each other, the holding portion 22 is restricted from rotating, that is, the battery terminal 20 is positioned in the rotating direction.

  Subsequently, when the nut 26 in the bolt 25 and the nut 26 provided in the post connection portion 21 is tightened with a tightening tool, the holding portion 22 is gradually reduced in diameter as shown in FIG. The holding portion 22 is fixed to the battery post 12 while biting into the surface, and the battery terminal 20 is fixed to the battery post 12. After that, the counterpart terminal is connected to the terminal connection portion 40.

  Thus, in the present embodiment, when the post connection portion 21 of the battery terminal 20 is properly fitted to the battery post 12, the straight portion 16 of the overhang portion 15 provided on the base 13 of the battery post 12 and the post The flat hanging part 31 of the leg piece 30 provided on the connection part 21 side faces, in other words, the straight parts having a certain length face each other and come into contact with each other, whereby the battery of the post connection part 21 The rotation of the post 12 around the axis is restricted, that is, the battery terminal 20 is positioned.

  By providing an overhanging portion 15 (straight line portion 16) that is an engaging portion constituting the positioning mechanism A on the base 13 of the battery post 12, the leg piece 30 (the hanging portion 31) that is the engaged portion is connected to the battery. It can be set to the post connection portion 21 in the terminal 20, and a separate member for positioning is not required, and the shape of the battery terminal 20 can be changed only slightly to avoid an increase in size. Space saving can also be achieved because the installation space is substantially within the installation space of the battery terminal 20.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS.
The positioning mechanism B of this embodiment is as follows. As shown in FIG. 8, the pedestal 13 of the battery post 12 has a line-symmetric position on the outer peripheral surface with the center line x in between, specifically, a front position offset by a predetermined distance from the center line orthogonal to the center line x. A pair of small protrusions 50 (corresponding to the “engagement part” of the present invention) are formed protrudingly (at a lower position in the figure).

  On the other hand, the post connection part 21 of the battery terminal 20, more specifically, the line-symmetrical position across the center line y in the outer peripheral edge of the lower end of the holding part 22, specifically, the center orthogonal to the center line y A pair of abutting portions 55 are formed at a rear position (upward position in the figure) offset by a predetermined distance from the line. The abutting portion 55 has a shape in which a projecting piece having the same width as that of the projecting portion 50 of the pedestal 13 protrudes in the horizontal direction and then is bent at a right angle downward. The hanging portion 56 of the abutting portion 55 is in a position that fits outside the outer peripheral surface of the pedestal 13 described above.

In the present embodiment, when the battery terminal 20 is directed to a normal posture and the holding part 22 of the post connection part 21 is externally fitted to the battery post 12, the lower end of the holding part 22 is placed on the base 13; As shown in FIG. 9, the drooping portion 56 of the corresponding abutment portion 55 enters the rear side (the upper side in the figure) of each projection 50 of the pedestal 13.
Therefore, when the post connecting portion 21 of the battery terminal 20, that is, the holding portion 22 tries to rotate around the axis of the battery post 12, for example, when trying to rotate clockwise in FIG. When the front surface of the drooping portion 56 hits the rear surface of the right projection 50 and tries to rotate counterclockwise in the figure, the front surface of the drooping portion 56 of the left abutment portion 55 is The contact with the rear surface of the part 50 restricts the holding part 22 from rotating, that is, the battery terminal 20 is positioned in the rotational direction.

  The relationship between the structural requirements of the positioning mechanism B of the second embodiment and the structural requirements of claim 3 will be described. The hanging portion 56 of the abutment portion 55 of the second embodiment is connected to the periphery of the lower end of the holding portion 22. The virtual part provided continuously over the entire region corresponds to the “pedestal fitting part” provided so as to be fitted to the outside of the pedestal in claim 3, and the hanging part of the both abutting parts 55 A portion between 56 is a “concave portion” in which the protrusion (on the pedestal side) fits in the third aspect. Therefore, the hanging portion 56 of the abutting portion 55 in the second embodiment corresponds to the “engaged portion” of the present invention.

  Also in the second embodiment, similarly to the first embodiment, the protrusion 50 that is the engaging portion constituting the positioning mechanism B is provided on the base 13 of the battery post 12, so that the abutting portion that is the engaged portion. The hanging portion 56 of 55 can be set to the post connection portion 21 in the battery terminal 20 and, in addition to the necessity of a separate member for positioning, the shape of the battery terminal 20 can be changed only slightly, and an increase in size can be avoided. Further, since the positioning space for the positioning mechanism B is substantially within the space for the battery terminal 20, space saving can be achieved.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) As a modification of the positioning mechanism according to the first embodiment, there may be only one pair of the base portion of the battery post and the pair of leg pieces on the battery terminal side. Conversely, there may be three or more pairs.
(2) The straight portion provided on the outer peripheral surface of the base of the battery post may be formed by cutting out a part of the outer peripheral surface in a straight line.

(3) As a modified example of the positioning mechanism of the second embodiment, a protrusion is provided on the outer peripheral surface of the battery post pedestal, while a pedestal fitting part that can be fitted to the outside of the pedestal provided at the battery terminal. The peripheral surface may be provided with a recess into which the above-mentioned protrusion fits almost closely.
(4) Contrary to the above, a concave portion is provided on the outer peripheral surface of the base of the battery post, while a protruding portion that fits closely into the concave portion is provided on the inner peripheral surface of the base fitting portion provided on the battery terminal. It may be.
(5) One pair may be sufficient as the protrusion and recessed part which make the pair in said (3), (4), and two or more sets may be sufficient as it.
(6) Furthermore, it is good also as a structure which provided the tooth | gear part which mesh | engages mutually on the outer peripheral surface of the base of a battery post, and the inner peripheral surface of the base fitting part of a battery terminal along the circumferential direction.

A, B ... Positioning mechanism 10 ... Battery 11 ... Battery body 12 ... Battery post 13 ... Base 15 ... Overhang part 16 ... Linear part (engagement part)
DESCRIPTION OF SYMBOLS 20 ... Battery terminal 21 ... Post connection part 22 ... Holding part 23 ... Extension piece 25 ... Bolt (clamp)
26 ... Nut (clamp)
30 ... leg piece 31 ... hanging part (engaged part)
40 ... terminal connection part 42 ... stud bolt (bolt)
50. Projection (engagement part)
55 ... Abutting part 56 ... Hanging part (engaged part)

Claims (4)

While a battery post having a circular cross section is erected on the pedestal,
A battery terminal in which a terminal connection part connected to a mating terminal is provided integrally with a post connection part having a substantially annular shape fitted to the battery post,
The battery terminal is fixed to the battery post by being tightened so that the post connecting portion of the battery terminal is reduced in diameter after being fitted to the battery post.
Between the pedestal of the battery post and the post connection portion of the battery terminal, the post connection portion is engaged with each other in a form fitted to the battery post so that the post connection portion is the battery post. A battery terminal mounting structure in which a positioning mechanism including an engaging portion and an engaged portion for restricting rotation about the axis of the battery is formed. A straight portion is provided on the outer peripheral surface of the pedestal of the battery post, and a flat leg piece facing the straight portion is suspended from a lower edge of the post connection portion of the battery terminal. The battery terminal mounting structure according to claim 1, wherein a positioning mechanism is configured. On the lower edge side of the post connection portion of the battery terminal, a pedestal fitting portion that can be fitted to the outside of the pedestal is provided,
One and the other of the outer peripheral surface of the pedestal and the inner peripheral surface of the pedestal fitting portion are formed with protrusions and recesses that are fitted to each other, and the side surfaces of the protrusions are in contact with the opposite side surfaces of the recesses. The battery terminal mounting structure according to claim 1, wherein the positioning mechanism is configured to regulate the rotation of the post connection portion by contact. The post connecting portion in the battery terminal is provided with a pair of extending pieces extending from both ends of the holding portion formed in a substantially annular shape so as to hold the battery post, and the pair of extending pieces is a fastening tool. The holding portion is adapted to be reduced in diameter by being tightened by and approached,
A bolt is set up in the terminal connection portion, and the bolt insertion hole of the mating terminal is inserted into the bolt, and the mating terminal is connected and fixed by tightening a nut screwed into the bolt. The battery terminal mounting structure according to any one of claims 1 to 3, wherein:

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