JP2016091753A - Battery terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery terminal capable of preventing both fastening piece part from deforming and securing retention force for a battery post.SOLUTION: A battery terminal 10 comprises a pair of plate-like fastening piece parts 12, 13 which project from both ends of an electrode retaining part 11 opposite each other. The pair of fastening piece parts 12, 13 are provided with through holes 17, 18, and a bolt 70 is run through the through holes 17, 18. Both the fastening piece parts 12, 13 are provided with cylindrical burring parts projecting integrally from peripheries of the through holes 17, 18. Projection ends of the burring parts (a large-cylinder burring parts 23 and a burring part 23A) provided to one fastening piece part (first fastening piece part 12)between both the fastening piece parts 12, 13 are arranged opposite a plate surface of the other fastening piece part (second fastening piece part 13) in fastening.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a battery terminal.

  The battery terminal disclosed in Patent Document 1 includes an electrode holding part (arc-shaped fastening part) surrounding the battery post and a pair of fastening pieces (plate-like) projecting outward from both ends of the electrode holding part. Projecting portion). Both fastening pieces are provided with through holes that pass through these fastening pieces coaxially. The shaft portion of the bolt is passed through the through-holes of both fastening pieces. A nut is screwed onto the shaft portion of the bolt, and both fastening pieces are displaced in a direction approaching each other, whereby the electrode holding portion is deformed in diameter and fixed to the battery post.

JP 2010-33783 A

  By the way, in the above case, the bolt and the nut may be tightened with an excessive torque, and both the tightening pieces that receive the bolt head and the nut may be curved and deformed inward. If both tightening pieces are bent and deformed inward, the deformed portions interfere before the two tightening pieces reach the proper tightening position, and a predetermined tightening allowance cannot be obtained. The holding force on the battery post may be reduced.

  The present invention has been completed on the basis of the above circumstances, a battery terminal that can prevent deformation of both fastening pieces and can secure a holding force for a battery post. The purpose is to provide.

  The present invention includes an arc-shaped electrode holding portion that surrounds a battery post, and a pair of plate-like fastening pieces that protrude from opposite ends of the electrode holding portion, and the pair of fastening pieces Are provided with through holes that pass through the tightening pieces coaxially. Bolts are passed through the through holes, and the bolt shafts are screwed into the nuts so that the bolt heads and the nuts Between the two clamping pieces, thereby reducing the diameter of the electrode holding part and fixing the battery post to the battery post, each of the clamping pieces being respectively A cylindrical burring portion that integrally protrudes from the periphery of the through hole is provided, and the protruding end of the burring portion provided in one of the tightening pieces is tightened to the other when tightened. Characterized by being placed opposite the plate surface of one part A.

Since the cylindrical burring part is integrally provided around the through-holes of both fastening pieces, it is avoided that both fastening pieces are bent and deformed during fastening.
If the projecting ends of the burring parts provided on both tightening pieces face each other at the time of tightening, the clearance obtained by adding at least the projecting dimensions of both burring parts between the plate surfaces of both tightening pieces As a result, the distance between the plate surfaces of both fastening pieces becomes too large, and there is a risk that it is not possible to obtain a fastening allowance sufficient to hold the battery post. In that respect, according to the above-described configuration, the protruding end of the burring portion provided on one of the fastening pieces is disposed so as to face the plate surface of the other fastening piece when tightened. The projecting ends are not configured to face each other, and the separation distance between the plate surfaces of both fastening pieces is not excessively increased. As a result, a predetermined holding force for the battery post can be ensured.

In Example 1 of this invention, it is a top view of the battery terminal before clamping | tightening of a volt | bolt and a nut. It is a top view of the battery terminal attached to the battery post by tightening the bolt and nut. It is sectional drawing of the battery terminal in the state of FIG. It is a front view of the battery terminal in the state of FIG. It is a side view of a battery terminal. In Example 2 of this invention, it is sectional drawing of the battery terminal attached to the battery post by clamping | tightening of a volt | bolt and a nut.

Preferred embodiments of the present invention are shown below.
The burring portion is characterized in that it is formed over the entire circumference of the through-holes of the fastening piece portions. As a result, a situation in which both the fastening pieces are bent and deformed during fastening is more reliably avoided.

  The protruding end of the burring portion provided on the one fastening piece portion is disposed in contact with the plate surface of the other fastening piece portion during fastening. According to this, even if the bolt and nut are to be tightened excessively, the protruding end of the burring portion provided on one tightening piece portion abuts on the plate surface of the other tightening piece portion, so that further Tightening can be prevented.

The burring portion provided on the one tightening piece portion is a large tube burring portion, and the burring portion provided on the other tightening piece portion is a small tube burring portion that enters the large tube burring portion when tightening. Yes. According to this, the large tube burring and the small tube burring can be arranged with a clearance corresponding to the projecting dimension of the large tube burring between the plate surfaces of both tightening pieces, Can be used effectively.
In addition, when an interval holding structure (corresponding to a third bent portion in Example 1 to be described later) is provided at the end of the other fastening piece portion to keep an interval from the one fastening piece portion. , The installation space for the mold must be secured between the space holding structure and the small tube burring part, but the installation space should be secured without any problem because the small tube burring part is smaller in diameter than the large tube burring part. Can do.

  The burring part provided in the other fastening piece part is configured to protrude toward the outside opposite to the side where the one fastening piece part is located. If it carries out like this, since both burring parts will be arrange | positioned in the position which does not influence mutually mutually, the freedom degree at the time of setting the protrusion dimension and diameter dimension of both burring parts is raised.

<Example 1>
Embodiment 1 of the present invention will be described below with reference to FIGS. The battery terminal 10 of the first embodiment is integrally formed by bending a conductive metal plate or the like, and as shown in FIG. 1, an arc-shaped electrode that surrounds the battery post 90, specifically a C-shaped electrode in plan view. A holding part 11, a pair of plate-like fastening pieces 12, 13 projecting from both ends (opening edges of both ends) of the electrode holding part 11 forward (downward in FIG. 1) to each other, and both fastening pieces And a barrel-shaped wire connecting portion 14 protruding rearward (upward in FIG. 1) from the end opposite to the side on which 12 and 13 are located.

  As shown in FIG. 4, the battery post 90 has a frustum shape that is slightly reduced in diameter upward, and is erected on the upper surface of the battery body 91. As shown in FIGS. 2 and 4, the electrode holding portion 11 has a band plate shape and can be held by covering the outer peripheral surface of the battery post 90.

  As shown in FIG. 5, the wire connection portion 14 is configured to protrude rearward from the rear upper end of the electrode holding portion 11 and is connected to the conductor portion 81 at the end of the wire 80 by crimping. The electric wire 80 is routed from the electric wire connection portion 14 so as to extend rearward. As shown in FIG. 2, the wire connecting portion 14 and the fastening pieces 12 and 13 are arranged coaxially in the wiring direction of the wire 80 (the vertical direction in FIG. 1, the front-rear direction here). Has been.

  Both fastening pieces 12 and 13 have flat seats 15 and 16 having a substantially rectangular shape (see FIG. 5) in a side view, respectively. As shown in FIG. 4, both seats 15, 16 are disposed substantially parallel to each other along the axial direction (vertical direction) of the battery post 90. In the central part of both seats 15 and 16, these seats 15 and 16 are circularly penetrated coaxially in the left-right direction (the plate thickness direction of the seats 15 and 16 and the axial direction of the bolt 70 described later). Through holes 17 and 18 are provided. Of the two fastening pieces 12 and 13, provided on the seat 15 of the fastening piece on the left side in FIG. 3 (one fastening piece, hereinafter referred to as the first fastening piece 12). The formed through-hole (hereinafter referred to as the first through-hole 17) is a right-hand tightening piece (the other tightening piece, hereinafter referred to as the second tightening piece 13) in FIG. It has a larger diameter than a through hole (hereinafter referred to as a second through hole 18) provided in the seat portion 16.

  As shown in FIG. 3, the shaft portion 71 of the bolt 70 is inserted into the through holes 17 and 18 from the side where the second fastening piece portion 13 is located toward the side where the first fastening piece portion 12 is located. It has come to be. The shaft portion 71 of the bolt 70 protrudes outward from the first through-hole 17 (on the opposite side to the side where the two fastening pieces face each other, the left side in FIG. 3), and the seat of the first fastening piece 12. It can be screwed onto a nut 60 installed on the outer surface of the portion 15. Then, when the bolt 70 and the nut 60 are tightened, both the fastening pieces 12 and 13 sandwiched between the head 72 of the bolt 70 and the nut 60 are displaced in a direction approaching each other, and together with the electrodes The holding portion 11 is deformed in a reduced diameter so that the electrode holding portion 11 is fixed to the battery post 90.

  As shown in FIGS. 4 and 5, the first fastening piece 12 has a pair of first bent portions 19 formed by bending the upper and lower end portions outward at substantially right angles. Both the first bent portions 19 are in the form of plate pieces projecting outward from the entire edges of the upper and lower ends of the seat portion 15. Between both the 1st bending parts 19, it arrange | positions so that the nut 60 installed in the outer surface of the seat part 15 of the 1st fastening piece part 12 may be clamped. Moreover, both the 1st bending parts 19 have the role which reinforces the 1st fastening piece part 12 with the large cylinder burring part 23 mentioned later.

  As shown in FIG. 4, the second fastening piece portion 13 has an upper end substantially perpendicular to the outside (the side opposite to the side where the fastening pieces 12 and 13 face each other and the right side in FIG. 4). The second bent portion 21 is bent. As shown in FIG. 2, the second bent portion 21 has a plate-like shape that protrudes outward from the entire edge of the upper end of the seat portion 16 with a larger protruding amount than the first bent portion 19. . And the 2nd bending part 21 can contact | abut to the head 72 of the volt | bolt 70 installed in the outer surface of the seat part 16 of the 2nd fastening piece part 13. FIG.

  Further, as shown in FIG. 4, the second fastening piece 13 is bent at a substantially right angle at the lower end thereof toward the inside (the side where the fastening pieces 12 and 13 face each other and the left side in FIG. 4). The third bent portion 22 is formed. The third bent portion 22 has a plate-like shape that protrudes from the entire lower edge of the seat portion 16 toward the inside with a protruding amount smaller than that of the first bent portion 19. The third bent portion 22 has a role of maintaining a constant clearance between the inner surfaces (between opposing surfaces) of the seat portions 15 and 16 of the tightening pieces 12 and 13 when the bolt 70 and the nut 60 are tightened. . Moreover, the 2nd bending part 21 and the 3rd bending part 22 have the role which reinforces the 2nd fastening piece part 13 with the small cylinder burring part 24 mentioned later.

  As shown in FIGS. 1 and 3, the two fastening pieces 12 and 13 are arranged on the inner side from the opening edges of the through holes 17 and 18 by the burring process (the sides on which the fastening pieces 12 and 13 face each other). ) Have burring portions 23 and 24 bent and raised. Of the two fastening pieces 12, 13, the first fastening piece 12 is provided with a large tube burring portion 23 having a large diameter corresponding to the opening diameter of the first through hole 17, and the second fastening piece 13. Is provided with a small tube burring portion 24 having a small diameter corresponding to the opening diameter of the second through hole 18.

  The large cylinder burring portion 23 is a cylinder that protrudes along the axial direction of the bolt 70 (the left-right direction in FIGS. 1 to 4) from the seat portion 15 of the first fastening piece portion 12 toward the second fastening piece portion 13. It is formed over the entire circumference of the first through hole 17 (see FIG. 5). The small tube burring portion 24 has a cylindrical shape protruding along the axial direction of the bolt 70 from the seat portion 16 of the second tightening piece portion 13 toward the first tightening piece portion 12, and the second through hole 18. (See also FIG. 5). An installation space for the molding die is secured between the small tube burring portion 24 and the third bent portion 22 (rib).

  As shown in FIG. 3, the inner diameter of the large tube burring portion 23 is larger than the outer diameter of the small tube burring portion 24. The inner diameter of the small tube burring portion 24 is made larger than the outer diameter of the shaft portion 71 of the bolt 70. Further, the projecting dimension of the large tube burring portion 23 is substantially the same as the protruding amount of the third bent portion 22. Further, the protruding dimension of the large tube burring portion 23 is substantially the same as that of the small tube burring portion 24. Furthermore, the large tube burring portion 23 and the small tube burring portion 24 are arranged concentrically in the axial direction of the bolt 70.

Next, a method for attaching the battery terminal 10 to the battery post 90 will be described.
Prior to mounting the battery terminal 10, the shaft portion 71 of the bolt 70 is passed through the through holes 17, 18 of both the fastening pieces 12, 13, and a nut installed on the outer surface of the seat portion 15 of the first fastening piece 12. The shaft portion 71 is loosely screwed onto 60. In this state, the electrode holder 11 of the battery terminal 10 is placed on the battery post 90 from above. At this time, the electrode holding part 11 is loosely fitted to the battery post 90, and the large cylinder burring part 23 and the small cylinder burring part 24 are arranged at intervals in the axial direction of the bolt 70.

  Subsequently, the shaft portion 71 of the bolt 70 is screwed deeply into the nut 60. Then, the tightening pieces 12 and 13 approach each other, and the electrode holding portion 11 is gradually deformed in a reduced diameter. As shown in FIGS. 2 to 4, when the bolt 70 and the nut 60 are properly tightened, the electrode holding portion 11 comes into contact with the outer peripheral surface of the battery post 90 along the circumferential direction, and the electrode holding portion 11 is connected to the battery. It is fixed to the post 90. As a result, the battery terminal 10 is attached to the battery post 90 and held.

  As shown in FIGS. 2 to 4, when the bolt 70 and the nut 60 are properly tightened, the protruding end of the large tube burring portion 23 faces the inner surface of the seat portion 16 of the second tightening piece portion 13. Further, the protruding end of the third bent portion 22 is disposed so as to be able to contact the inner surface of the seat portion 15 of the first fastening piece portion 12, thereby further approaching the fastening piece portions 12 and 13. Be regulated. Further, the small tube burring portion 24 enters the large tube burring portion 23, and the burring portions 23, 24 are prevented from interfering with each other. At this time, a slight gap is formed in the radial direction between the inner peripheral surface of the large tube burring portion 23 and the outer peripheral surface of the small tube burring portion 24.

  According to the above configuration, even if the bolt 70 and the nut 60 are excessively tightened, the projecting end of the large tube burring portion 23 abuts on the inner surface of the seat portion 16 of the second tightening piece portion 13. Further tightening of the nut 60 is prevented. In particular, since both burring portions 23 and 24 are formed around the through holes 17 and 18 of the tightening pieces 12 and 13 over the entire circumference, the torque at the time of tightening the bolt 70 and the nut 60 can be reduced. As a result, it is possible to avoid such a situation that both the burring portions 23, 24 are bent and deformed inward.

  Further, since the small tube burring portion 24 enters the large tube burring portion 23 at the time of tightening, the clearance between the inner surfaces of the both tightening piece portions 12 and 13 is defined by the large tube burring portion 23, and both the tightening pieces The clearance between the inner surfaces of the parts 12 and 13 is effectively used. Further, with such a configuration, a predetermined holding force for the battery post 90 can be obtained without excessively increasing the clearance between the inner surfaces of the fastening pieces 12 and 13.

<Example 2>
FIG. 6 shows a second embodiment of the present invention. The battery terminal 10A according to the second embodiment is different from the first embodiment in the form of burring portions 23A and 24A of both tightening pieces 12A and 13A. Others are the same as those in the first embodiment, and therefore, the same or corresponding structures as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  The through holes 17A and 18A of the tightening pieces 12A and 13A have the same opening diameter, and are configured with an opening diameter slightly larger than the outer diameter of the shaft portion 71 of the bolt 70. Of both the fastening pieces 12A and 13A, the burring portion 23A provided on the first fastening piece 12A is slightly smaller than the large burring portion 23 of the first embodiment, but the large burring portion 23, a cylindrical shape protruding along the axial direction of the bolt 70 from the seat portion 15A of the first fastening piece portion 12A toward the second fastening piece portion 13A side (left-right direction in FIG. 6), It is formed over the entire circumference of one through hole 17A.

  The burring portion 24A provided in the second fastening piece portion 13A is opposite to the first fastening piece portion 12A side from the opening edge of the second through hole 18A, contrary to the small tube burring portion 24 of the first embodiment. A cylindrical shape that protrudes along the axial direction of the bolt 70 outward from the seat 16A of the second fastening piece 13A. None, formed over the entire circumference of the second through-hole 18A.

  Here, when the bolt 70 and the nut 60 are properly tightened, the burring portion 23A provided in the first tightening piece portion 12A comes into contact with the inner surface of the seat portion 16A of the second tightening piece portion 13A, and both tightening is performed. The clearance between the inner surfaces of the attaching pieces 12A and 13A is kept constant. This is the same as in the first embodiment. On the other hand, the burring portion 24A provided in the second fastening piece portion 13A is not positioned between the inner surfaces of the two fastening piece portions 12A and 13A during fastening, and the seat portion 16A of the second fastening piece portion 13A is disposed. The first clamping piece 12A is disposed so as to protrude to the outer side opposite to the side where the burring portion 23A is located. Therefore, according to the second embodiment, both the burring portions 23A and 24A do not affect each other with respect to the formation position and the like, so that the freedom in setting the projecting dimensions and the radial dimensions of both the burring portions 23A and 24A. The degree is increased.

<Other embodiments>
Other embodiments will be briefly described below.
(1) In Example 1 and Example 2, the protruding end of the burring part (large cylinder burring part in the case of Example 1) provided in the first fastening piece part during fastening is the second fastening piece part It may be arranged so as not to contact the inner surface of the seat portion but to simply face each other.
(2) In Example 1, the outer peripheral surface of the small tube burring portion may be disposed in contact with the inner peripheral surface of the large tube burring portion during tightening. In this case, it is preferable that the approaching operation of both fastening pieces is guided by the fitting of the large tube burring portion and the small tube burring portion.
(3) In the first embodiment, the protruding end of the small tube burring portion may be in a position to enter the first through hole during tightening, or may be in a position to stay in the large tube burring portion.
(4) You may abbreviate | omit all or one part of a 1st bending part, a 2nd bending part, and a 3rd bending part from both fastening piece parts as needed.
(5) The two fastening pieces may be arranged to be inclined with respect to the axial direction of the battery post (the vertical direction in FIG. 4).

DESCRIPTION OF SYMBOLS 10 ... Battery terminal 11 ... Electrode holding part 12, 12A ... 1st fastening piece part (one fastening piece part)
13, 13A ... Second fastening piece (the other fastening piece)
17, 17A ... 1st through-hole (through-hole of one fastening piece part)
18 and 18A ... 2nd through-hole (through-hole of the other fastening piece part)
23 ... Large cylinder burring part 24 ... Small cylinder burring part 23A ... Burring part of the first fastening piece part 24A ... Burring part of the second fastening piece part 60 ... Nut 70 ... Bolt 71 ... Shaft part 72 ... Head part 90 ... Battery post

Claims (5)

An arc-shaped electrode holding portion surrounding the battery post, and a pair of plate-like fastening pieces projecting from both ends of the electrode holding portion so as to face each other, and the pair of fastening pieces are fastened to the pair of fastening pieces. A through hole is provided coaxially through one piece, a bolt is passed through the through hole, and the shaft portion of the bolt is screwed into the nut, so that the bolt is between the head and the nut. A battery terminal that is fixed to the battery post by causing both of the tightening pieces to approach each other, thereby reducing the diameter of the electrode holding portion and deforming,
Each of the fastening pieces is provided with a cylindrical burring portion that integrally projects from the periphery of the through hole, and the burring provided on one of the fastening pieces. The battery terminal is characterized in that the protruding end of the portion is arranged to face the plate surface of the other fastening piece when tightened.   2. The battery terminal according to claim 1, wherein the burring portion is formed over the entire periphery of the through hole of the fastening piece portions.   3. The battery according to claim 1, wherein a protruding end of a burring portion provided on the one fastening piece is disposed in contact with a plate surface of the other fastening piece during fastening. 4. Terminal.   The burring portion provided on the one tightening piece portion is a large tube burring portion, and the burring portion provided on the other tightening piece portion is a small tube burring portion that enters the large tube burring portion when tightening. The battery terminal according to any one of claims 1 to 3, wherein the battery terminal is provided.   The burring part provided in said other fastening piece part is a form which protrudes toward the outer side opposite to the side where said one fastening piece part is located, The thru | or 3 characterized by the above-mentioned. The battery terminal according to any one of the above.

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