JP2000268808A - Terminal part for lead battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal part for a lead battery whose manufacture is easy and mechanical intensity is excellent, since a terminal plate can be easily welded to a polar column without a jig when the terminal part is formed, a resin can be poured in every corner in a recess, and, in addition, the terminal plate can be fixed in the recess. SOLUTION: This terminal part consists of a cover 4, a polar column 7, a terminal plate 1, and a resin 6. Here, the cover 4 has a recess 5 on an upper surface thereof, and the recess 5 has a penetration hole 8 at a bottom 5c. A polar column 7 is inserted in the penetration hole 8, and a tip thereof is placed in the recess 5. A terminal plate 1 consists of a bottom late 3, and a standing part 2 stood from the bottom plate 3, the bottom plate 3 is connected with a tip of the polar column 7, and a part of a peripheral surface is contacted with a peripheral surface 5a of the recess 5 and is fixed thereto. A resin 6 is filled into upper and lower recess spaces communicated through the bottom plate 3 and right and left recess spaces communicated through the standing part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a terminal portion of a lead battery.

[0002]

2. Description of the Related Art As shown in FIG. 3, an annular lead bushing 10 is integrally formed on a battery case cover 4 in advance and a pole 7 is inserted into a through hole 11 of the lead bushing 10 as shown in FIG. After that, the lead bushing 10 and the pole 7 are welded to seal the through-hole 11, and at the same time, additional lead is applied, and a hardened resin 12 for preventing liquid leakage is flown over the lead bushing 10 and sealed. After inserting a lead alloy pole 7 into a through hole 8 on the bottom surface of the concave portion 5 formed on the upper surface of the lid 4 as shown in FIG. After fixing the terminal 7 and the terminal plate 1 with a jig, welding is performed, and a hardened resin 6 for preventing liquid leakage from flowing over the terminal plate 1 is hermetically sealed. In the latter, the resin 6 is covered with the lid 4.
When the resin is filled into the concave portion 5, the shapes of the bottom plate 3 and the rising portion 2 of the terminal plate 1 are made smaller than the peripheral shape of the concave portion 5 so that the resin 6 flows into the bottom surface and the side surface of the concave portion. In addition, 9 is an elastic member.

[0003]

However, in the former case, when the battery case cover 4 and the lead bushing 10 are integrally formed, the synthetic resin material constituting the battery case cover 4 contracts and the interface with the lead bushing 10 is reduced. There was a problem in that a gap was formed in the liquid crystal, and a complete airtight structure could not be obtained, resulting in liquid leakage. Furthermore,
Welding of the pole 7 and the lead bushing 10 was difficult and required advanced technology.

In the latter case, the terminal plate 1 and the pole 7
Since the bottom plate 3 and the rising portion 2 of the terminal plate were smaller in shape than the cover concave portion 5, it was necessary to fix the terminal plate 1 at a predetermined position with a jig for welding. However, if the fixing of the jig is incomplete, there has been a problem that the position of the terminal plate shifts from a predetermined position during welding. Further, the terminal plate 1 is fixed in the recess only by the resin 6, which has a low strength, and the resin 6 is broken by bolt tightening at the time of wiring, causing a problem that a liquid leaks from the gap.

To solve this problem, the terminal plate 1 is
There is also a method of using a terminal plate having substantially the same planar shape as the concave portion 5 so as to engage with the concave portion 5 of the resin 6.
When the resin flows into the concave portion, the bottom plate 3 and the rising portion 2 of the terminal plate prevent the flow to the bottom portion and the back portion of the concave portion 5, and as a result, a gap is generated without the resin 6 flowing uniformly into the space of the concave portion 5. However, there has been a problem that a complete airtight structure cannot be obtained and liquid leakage occurs.

The present invention has been made in view of the above problems, and an object of the present invention is to easily weld a terminal plate to a pole without using a jig when forming a terminal portion. The object of the present invention is to provide a terminal portion of a lead-acid battery that is easy to manufacture, has excellent airtightness, and has excellent mechanical strength because resin is poured into every corner of the concave portion and the terminal plate is fixed in the concave portion. .

[0007]

The terminal portion for a lead battery according to the present invention comprises a cover 4, a pole 7, a terminal plate 1 and a resin 6, and the cover 4 is provided.
Has a concave portion 5 on the upper surface, and the concave portion 5 has a through hole 8 on the bottom surface 5c.
The terminal plate 1 includes a bottom plate 3 and a rising portion 2 that rises upward from the bottom plate 3, and the bottom plate 3 is connected to the pole 7.
And at least a part of the peripheral surface is formed in the recess 5.
Are fixed in contact with the peripheral surface 5a of the
Are filled in the upper and lower recessed spaces communicated via the bottom plate 3 and the left and right recessed spaces communicated via the rising portion 2.

In the terminal plate 1 according to the present invention, at least a part of the peripheral surface of the bottom plate 3 is in contact with the peripheral surface 5a of the concave portion 5 and is fixed in the concave portion. The concave space above and below the bottom plate 3 is filled with the resin 6 by communicating with a gap between the bottom plate 3 and the peripheral surface 5a of the concave portion or a through hole of the bottom plate 3. Also, the left and right concave spaces of the rising portion 2 are filled with the resin by communicating with each other through a gap between the rising portion 2 and the concave surface 5a or a through hole of the rising portion 2.

[0009]

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

FIG. 1 is a sectional view of a terminal portion of the present invention, and FIG.
1 is a perspective view showing a terminal plate according to the present invention, wherein 1 is a terminal plate, 2 is a rising portion, 3 is a bottom plate, 4 is a lid, 5 is a concave portion of a lid, 6 is a resin, 7 is a pole, 8 Is a through hole formed in the bottom surface of the concave portion 5, and 9 is an elastic member.

The lead battery terminal of the present invention comprises a cover 5 and a pole 7.
And a terminal plate 1 and a resin 6. The lid 5 has a rectangular column-shaped recess 5 formed on the upper surface. The recess 5 has a step 5b formed on a peripheral surface 5a and a through hole 8 formed on a bottom surface 5c. The bottom surface of the recess near the periphery of the through hole 5d is recessed, and the elastic member 9 is fitted into the recessed portion.

The pole 7 is a column-shaped pole which is erected from a strap of a pole group (not shown).
And the tip is in the recess 5.

The terminal plate 1 is L-shaped, and has a bottom plate 3 and
And a rising portion 2 rising from one end of the bottom plate 3. In the bottom plate 3, a through hole 3a is formed in the center, and the tip of the pole 7 is inserted into the through hole 3a and connected by welding. The rising portion 2 has cutouts 2a, 2a formed on both side surfaces at the lower portion, and a through hole 2b formed at the center of the upper portion to facilitate connection with an external lead wire. The bottom plate 3 has a rectangular shape, and has two corners 3b, 3b that are symmetrical with the side connected to the rising portion 2 and are notched. The bottom plate 3 is placed on the step 5b, and the two corners 3
The peripheral surface excluding b and 3b is fixed in the concave portion in contact with the peripheral surface 5a of the concave portion. Then, the bottom plate 3 and the concave surface 5a are formed.
The upper and lower spaces of the concave portion communicate with each other through the two corners where they do not touch. Furthermore, in the rising portion 2, the surface opposite to the surface connected to the bottom plate 3 is substantially in contact with a part of the concave peripheral surface 5a. The central portion of the concave portion (the left side of the rising portion 2 in FIG. 1) communicates with the notches 2a.

The resin 6 is provided between the upper and lower spaces of the recess 5 via the bottom plate 3 and the left and right of the recess 5 via the rising portion 2 (see FIG. 1).
To fix the terminal plate 1 and prevent the liquid from leaking through the concave portion or impairing the airtightness.

As described above, by arranging the annular elastic member 9 around the through hole 8 on the bottom surface of the concave portion, airtightness and liquid leakage can be further prevented.

Further, in this embodiment, the concave portion 5 is formed in the shape of a quadrangular prism and the step 5b is provided in the middle. However, for example, the concave portion 5 may have a conical shape in which the peripheral surface is inclined and the upper opening is larger than the bottom. . Further, although two corners of the bottom plate 3 are cut out to communicate the upper and lower portions of the concave space, a through hole may be provided separately from the through hole 3a of the bottom plate 3 and the through hole may be used to communicate with the bottom plate 3. Although the width of the portion 2 is the same as the width of the bottom plate 3, the width may be smaller than that of the bottom plate so that the left and right recess spaces of the rising portion communicate with each other.

[0017]

As described above, according to the present invention, when resin is flowed into a concave portion, the resin flows uniformly without forming a gap in the concave portion, a complete airtight structure is formed, and liquid leakage from the terminal portion is prevented. can do. In addition, since the peripheral surface of the bottom plate is fixed in contact with the peripheral surface of the concave portion, the terminal plate is firmly fixed to the lid, the terminal strength is improved, and no resin cracks are generated by tightening bolts at the time of wiring. , Can maintain airtightness.
Furthermore, since the periphery of the bottom plate of the terminal plate is shaped to fit into the peripheral surface of the concave portion of the lid, when welding the terminal plate and the pole,
There is no need to fix the terminal board with a jig. Therefore, welding can be performed easily and quickly without requiring any special technique. In addition, since the terminal plate can be welded in a fixed state, the position of the terminal plate does not deviate from a predetermined position.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a sectional view of a terminal portion of the present invention.

FIG. 2 is a perspective view showing a terminal plate according to the present invention.

FIG. 3 is a cross-sectional view showing one embodiment of a conventional terminal portion.

FIG. 4 is a sectional view showing another embodiment of a conventional terminal portion.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 terminal plate 2 rising portion 3 bottom plate 4 lid 5 concave portion 5 a peripheral surface of concave portion 5 c bottom surface of concave portion 6 resin 7 pole column 8 through hole at bottom of concave portion

Claims (1)

[Claims] 1. A lead battery terminal portion comprising a lid (4), a pole (7), a terminal plate (1) and a resin (6), wherein the lid (4) has a concave portion (5 ), And the concave portion (5) has a through hole (8) in the bottom surface (5c). The pole (7) has an upper portion inserted into the through hole (8) and a distal end formed with a concave portion (8). 5) wherein the terminal plate (1) comprises a bottom plate (3) and a rising portion (2) rising upward from the bottom plate (3); Is connected to the tip of the pole (7),
At least a part of the peripheral surface is a peripheral surface (5a) of the concave portion (5).
The resin (6) has upper and lower concave spaces communicating with each other via the bottom plate (3) and left and right concave spaces communicating with each other via the rising portion (2). A terminal portion for a lead battery, wherein the terminal portion is filled.