JP3162922B2 - Battery terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery terminal which is fastened to a battery post and is electrically connected.

[0002]

2. Description of the Related Art As a conventional battery terminal of this type, the one shown in FIGS. 5 to 7 is known (Japanese Utility Model Publication No. 61-66).
No. 13).

As shown in FIG. 5, a battery terminal 1 is formed by pressing a conductive metal plate into a substantially U-shaped cross section.
A battery connection part 3 is provided which is folded back at a bent part 1b so that the opposing plate 1a is vertically separated (the lower side is not shown). Such a metal plate is formed by punching a copper alloy plate such as copper or brass, an aluminum plate, or an aluminum alloy plate into a predetermined shape, and is plated with zinc or copper as desired. An electric wire connection portion 5 is provided on the anti-bending portion side of the battery connection portion 3, and a terminal bolt 25 is erected on the electric wire connection portion 5. A mating terminal fixed to a wire harness (not shown) is fastened to the terminal bolt 25, and the wire harness and the battery terminal 1 are electrically connected by such fastening.

The upper and lower opposing plates 1a of the battery connecting portion 3 have a hole 7 fitted to the battery post P and a bent portion 1a.
On the b side, a notch 9 communicating the upper and lower holes is formed.
Is defined by opposed inner portions 15, 17 of the tightening portions 11, 13 constituting the bent portion 1b. The upper and lower holes 7 are provided so as to be concentric with each other, and a wall 7 a that is in contact with the peripheral surface of the battery post P protrudes from the periphery of the hole 7. The notch 9 opens on the bent portion 1b side of the battery connecting portion 3, and the inner diameter of the hole 7 is elastically expandable and contractable by the notch 9. The fastening portions 11 and 13 are provided on opposite sides of the notch 9 so as to face each other. As shown in FIG.
Tightening bolts 19 are penetrated along the inner surfaces 11a and 13a of the nut 13 and the nuts 2 are passed through the bolts 19 through washers 23.
1 is screwed. That is, by fitting the hole 7 into the battery post P and tightening the nut 21, the battery terminal 1 is fastened and fixed in a state of being electrically connected to the battery post P. The opposed inner portions 15, 17 of the fastening portions 11, 13 are inclined in a direction away from the bent portion 1b so as to increase the amount of tightening of the nut 21.

[0005]

However, in such a conventional battery terminal 1, as shown in FIG. 6, the outer portions of the fastening portions 11, 13 which come into contact with the head 19a of the bolt 19 and the washer 23. Before the nut 21 is tightened, the nuts 25 and 27 are formed so as to be substantially perpendicular to the direction in which the bolt 19 passes, so that the nut 21 is tightened as shown in FIG. As shown in FIG. 2B, the tips of the tightening portions 11 and 13 on the bent portion 1b side approach each other, and only the end portions N of the outer portions 25 and 27 on the hole 9 side become closer. The bolt 19 may come into contact with the head 19 a and the washer 23, and the tightening load may concentrate on the end N. For this reason, the fastening parts 11, 13 due to the concentration of the fastening load
In order to prevent deformation and breakage of the battery terminal, the plate thickness of the fastening portions 11 and 13 must be increased. As a result, the plate thickness of the entire battery terminal 1 increases, and the weight of the battery terminal 1 cannot be denied.

The present invention has been made in view of the above circumstances, and has as its object to provide a battery terminal capable of reducing the concentration of a tightening load acting on a tightening portion and reducing the weight.

[0007]

In order to solve the above-mentioned problems, the present invention comprises a battery connecting portion formed by folding a conductive metal plate at a bent portion so that an opposing plate is vertically separated from each other,
The battery connecting portion communicates with a hole formed in the upper and lower opposing plates and externally fitted to the battery post, and an upper and lower hole on the bent portion side so that the inner diameter of the hole can be elastically expanded and contracted. A notch, and two fastening portions for defining the notch, wherein the fastening portion abuts an outer portion of the two fastening portions and penetrates along an inner surface of the fastening portion. In the battery terminal fixed to the battery post, the distal ends of the tightening portions are attached to at least one outer side of the two tightening portions. Is formed to form an inclined portion that comes into line contact with the fastener when approaching.

[0008]

According to the present invention, when the battery terminal is connected to the battery post, the hole is fitted into the battery post and the fastener is tightened. As a result, the bent portion-side end of the fastening portion gradually approaches, the hole portion is reduced in diameter, and the battery terminal is fastened and fixed in a state of being electrically connected to the battery post. At this time, at least one of the outer sides of the two fastening portions is formed with an inclined portion that comes into line contact with the fastener when the tips of the fastening portions approach each other. The concentration of the tightening load on the outer portion of the member can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a plan view showing a battery terminal and a battery post according to this embodiment, FIG. 2 is a perspective view of FIG. 1, and FIG. 3 is a developed view of the battery terminal of FIG. FIGS. 4A and 4B are plan views of the battery terminal for explaining the operation of the present embodiment. FIG. 4A shows a state where the nut is being fastened, and FIG. 4B shows a state after the nut is fastened.

As shown in FIG. 3, the battery terminal 31 is formed by pressing a conductive metal plate 61 punched substantially symmetrically in the left and right direction at a center L of symmetry and forming a substantially U-shaped cross section. And a battery connecting portion 3 that is folded back at a bent portion 31b so that the opposing plate 31a is vertically separated. As shown in FIGS. 1 and 2, an electric wire connection portion 5 is provided on the non-bent portion side of the battery terminal 31, and a terminal bolt 25 is provided upright on the electric wire connection portion 5. Terminal bolt 25
, A mating terminal 51 fixed to the wire harness W is fastened by a nut 53, and the wire harness W and the battery terminal 31 are electrically connected by the fastening.

In the upper and lower opposing plates 31a of the battery connecting portion 3, a hole 7 fitted to the battery post P and a bent portion 1 are formed.
A notch 9 (see FIG. 3) communicating the upper and lower holes is formed on the b side, and the notch 9 is formed by the tightening portions 33,
It is defined by 35 opposing inner portions 37, 39. The upper and lower holes 7 are provided so as to be concentric, and the periphery of the hole 7 is provided with a wall 7 a in contact with the peripheral surface of the battery post P.
Are protruding. The notch 9 opens at the bent portion 31b side of the battery connection portion 3, and the inner diameter of the hole 7 is elastically expandable and contractable by the notch 9. The fastening portions 33 and 35 are provided on both sides of the notch 9 so as to face each other. This fastening part 3
3 and 35 along the inner surfaces 33a and 35a.
, And a nut 21 is screwed into the bolt 19 via a washer 23. That is, the bolt 19, the nut 21, and the washer 23 constitute a fastener.
Opposing inner portions 37, 39 of the tightening portions 33, 35 are bent so that the amount of tightening of the nut 21 is increased.
It is inclined in the direction away from.

Before the nut 21 is tightened, the head 19 a of the bolt 19 and the washer 23 are provided so as to project in a direction substantially perpendicular to the direction in which the bolt 19 penetrates.
The fastening portion 3 which comes into contact with the head 19a and the washer 23 of FIG.
The outer portions 41, 43 of the members 3, 35 are formed so as to be inclined toward the bent portion 31b so as to be separated from the fastening portions 41, 43 on the other side. That is, the entire outer portions 41 and 43 of the fastening portions 33 and 35 constitute an inclined portion.

To connect the battery terminal 31 to the battery post P, the hole 7 is fitted into the battery post P and the nut 21 is tightened. Thereby, as shown in FIG. 4, the tips of the tightening portions 33 and 35 on the bent portion 31b side gradually approach each other, the diameter of the hole 7 is reduced, and the battery terminal 31 is connected to the battery post P. Fastened and fixed in the connected state.

At this time, the outer portions 4 of the fastening portions 33, 35
Reference numerals 1 and 43 denote fastening parts 3 on the other side toward the bent part 31b.
The outer portions 41, 4 of the fastening portions 33, 35 are formed as the tips of the fastening portions 33, 35 on the bent portion 31b side approach each other, as they are formed so as to be inclined away from the fastening portions 33, 35.
3 approach a right angle to the direction of penetration of the bolt 19, and finally, as shown in FIG.
The outer portions 41 and 43 of 35 come into line contact with the head 19 a of the bolt 19 and the washer 23. For this reason, the fastening parts 33, 3
Concentration of the tightening load on the outer portions 41, 43 of the fifth member 5 is reduced, and deformation and breakage of the tightening portions 33, 35 can be prevented without increasing the thickness of the tightening portions 33, 35. Therefore, an increase in the thickness of the entire battery terminal 31 can be suppressed, and the weight of the battery terminal 31 can be reduced.

In this embodiment, the outer portions 41 and 43 of the fastening portions 33 and 35 are formed to be entirely inclined. However, an inclined portion may be formed in a part thereof, or one of the outer portions may be formed. 41
An inclined portion may be formed only in (43). Further, the outer portions 41 and 43 of the fastening portions 33 and 35 are connected to the head 1 of the bolt 19.
9a and the washer 23 are formed so as to be in line contact with each other,
A wall portion may be protruded from the outer portions 41 and 43 to make surface contact with the head portion 19a and the washer 23.
The concentration of the tightening load can be further reduced.

[0017]

As described above, according to the present invention,
Since the inclined portion is formed on at least one of the outer portions of the two tightening portions, the concentration of the tightening load on the outer portion of the tightening portion can be reduced, and the thickness of the tightening portion can be increased without increasing the plate thickness. Deformation and breakage of the attachment portion can be prevented. Therefore, an increase in the thickness of the entire battery terminal can be suppressed, and the weight of the battery terminal can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing a battery terminal and a battery post according to one embodiment of the present invention.

FIG. 2 is a perspective view of FIG.

FIG. 3 is a development view of a battery terminal of FIG. 1;

FIG. 4 is a plan view of a battery terminal for explaining the operation of the present embodiment, where (a) shows a state in which a nut is being fastened;
(B) shows the state after fastening the nut.

FIG. 5 is a perspective view of a conventional example.

FIG. 6 is a plan view of a conventional example.

7A and 7B are plan views showing a conventional example, in which FIG. 7A shows a state when a nut is fastened, and FIG. 7B shows a state after the nut is fastened.

[Explanation of symbols]

 Reference Signs List 3 Battery connection part 7 Hole part 9 Notch 19 Bolt (fastener) 21 Nut (fastener) 23 Washer (fastener) 31 Battery terminal 31a Opposing plate 31b Bent part 33 Tightening part 35 Tightening part 33a Inner surface 35a Inner surface 41 Outside Part (inclined part) 43 Outside part (inclined part)

Claims (1)

(57) [Claims] A battery connecting portion formed by folding a conductive metal plate at a bent portion so that the opposing plate is vertically separated from each other;
The battery connecting portion communicates with a hole formed in the upper and lower opposing plates and externally fitted to the battery post, and an upper and lower hole on the bent portion side so that the inner diameter of the hole can be elastically expanded and contracted. A notch, and two fastening portions for defining the notch, wherein the fastening portion abuts an outer portion of the two fastening portions and penetrates along an inner surface of the fastening portion. In the battery terminal fixedly fixed to the battery post, the holes on the bent portion side are brought close to each other, and at least one of the two tightened portions has an outer end with the front ends of the tightened portions. A battery terminal formed with an inclined portion which comes into line contact with the fastener when approaching.