JPH0869783A - Electrode pole sealing part of lead-acid battery - Google Patents

Abstract

PURPOSE: To prevent the leakage into a battery of a sealing agent without increasing parts such as an O ring, etc., at the time of forming the part of sealing the electrode pole of a lead-acid battery. CONSTITUTION: A thin cylinder 9 united with an electric jar cover 1 is raised around the through hole 4 provided in the recess 2 of the electric jar cover 1 made of synthetic resin, and an inward protrusion 10 to stick fast to the periphery of the electrode pole 5 is provided at the top of the cylinder 9. Passing the electrode pole 5 through the through hole 4, and further projecting it from the cylinder 9 will make the protrusion 10 provided at the top of the cylinder 9 stick fast to the periphery of the electrode pole 5. After fixation of a terminal 8 to the electrode pole 5, a sealing agent 7 (epoxy resin) is charged in the recess 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a pole post sealing portion suitable for a sealed lead storage battery.

[0002]

2. Description of the Related Art Conventionally, the pole-pole sealing part of a sealed lead-acid battery is
A configuration as shown in FIG. 3 is adopted. A recess 3 is further provided in the recess 2 of the battery case lid 1, and the pole 5 is passed through the through hole 4 provided in the recess 3. Then, the O-ring 6 is fitted into the pole 5 and press-fitted into the recess 3 to seal the gap between the through hole 4 and the pole 5, and then the sealing agent 7 is filled into the recess 2 to form the sealing portion. ing. The O-ring 6 is for preventing the sealing agent from leaking into the battery when the sealing agent is filled. Prior to filling the sealing agent 7, the terminal 8 is attached to the pole 5.
Is fixed.

[0003]

In the structure of the conventional pole column sealing portion described above, a step of fitting the O-ring 6 in the pole column 5 and press-fitting the O-ring 6 in the concave portion 3 is required, and the number of parts (O ring ) Will also increase. The problem to be solved by the present invention is to prevent leakage of the sealing agent into the battery without increasing the number of parts such as O-rings when filling the sealing agent.

[0004]

In order to solve the above-mentioned problems, the pole pillar sealing portion of the lead storage battery according to the present invention is such that the pole pillar is passed through the through hole provided in the concave portion of the battery case lid and the concave portion is filled with the sealing agent. In the above configuration, a thin cylinder that is integral with the battery case lid is raised around the through hole, and an inward protrusion that is in close contact with the peripheral surface of the pole is provided at the upper end of the cylinder.

[0005]

In the structure according to the present invention, when the pole column is passed through the through hole and further protruded from the cylinder, the overhang provided at the upper end of the cylinder comes into close contact with the peripheral surface of the pole column. This prevents the sealing agent from leaking. No work for fitting the O-ring occurs, and some displacement of the poles is absorbed by the deformation of the thin cylinder.

[0006]

EXAMPLE A thin-walled cylinder 9 integral with the battery case lid 1 is set up around a through hole 4 provided in a recess 2 of the battery case lid 1 made of synthetic resin. An inward overhang 10 is provided that is in close contact with the surface. The cross-sectional shape of the member composed of the cylinder 9 and the overhang 10 is a hook shape. When the pole 5 is passed through the through hole 4 and further protruded from the cylinder 9, an overhang 10 provided at the upper end of the cylinder 9 comes into close contact with the peripheral surface of the pole 5. This prevents leakage of the sealing agent when filling the recess 2 with the sealing agent 7. Since a gap is formed between the through hole 4 and the pole 5, the pole 5 is slightly displaced, but the thin synthetic resin cylinder 9 is deformed to absorb the displacement. The sealing member 7 (epoxy resin) is filled in the recess 2 to complete the sealing portion. Prior to filling the sealing member 7, the terminal 8 is fixed to the pole 5.

[0007]

As described above, the pole column sealing portion according to the present invention can prevent the filler from leaking without using a separate member such as an O-ring when filling the sealing material, and thus the sealing portion is formed. The number of process steps can be reduced and the number of parts to be managed can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment according to the present invention.

FIG. 2 is a perspective view of a main part before filling a sealing agent in FIG.

FIG. 3 is a cross-sectional view showing a conventional sealing portion.

[Explanation of symbols]

 1 is a battery case lid 2 is a concave portion 4 is a through hole 5 is a pole 7 is a sealing agent 9 is a cylinder 10 is overhanging

Claims (1)

[Claims] 1. A pole post sealing portion of a lead storage battery, wherein a pole is inserted through a through hole provided in a recess of a battery case lid, and the recess is filled with a sealing agent. Launch the cylinder,
The lead pole sealing part of the lead storage battery is provided on the upper end of the cylinder with an inward protrusion that adheres closely to the peripheral surface of the pole.