JP2568461Y2 - Sealed storage battery valve prevention device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing a valve of a sealed battery from coming off.

[0002]

2. Description of the Related Art As shown in FIG. 3, a conventional valve for preventing a valve of a sealed type storage battery from coming off opens in a cell chamber D in a battery case C provided in a battery case cover B of a sealed storage battery A. A cap-shaped rubber valve F is tightly fitted to the cylinder E, and a heavy holding lid G is placed on the upper surface of the rubber valve F when performing initial charging. Thus, in the initial charging of the storage battery, the cell chamber D of the storage battery A
When the internal pressure rises, the rubber valve E receives pressure in the direction of coming out of the cylinder E due to the increase of the internal pressure, but is suppressed by the retaining lid G on the upper surface, and It prevented getting out.

[0003]

As described above, in the above-mentioned conventional apparatus, a plurality of holding lids are prepared separately for individually charging each of the sealed storage batteries. Since it is necessary to put on each valve, it is uneconomical, and the initial charging operation is troublesome. Therefore, it is preferable that the initial charging can be performed by eliminating such a lid.

[0004]

SUMMARY OF THE INVENTION The present invention satisfies the above-mentioned demands, does not require a separate holding lid, and uses the above gas pressure.
The present invention provides a device for preventing a valve of a sealed storage battery from coming off, which can prevent the rubber valve from being expanded from falling off and can perform initial charging economically and quickly.
A cap-shaped rubber valve composed of a cap-shaped rubber valve main body and an engaging projection protruding from the outer periphery of the cap-shaped rubber valve is closely fitted to a cylinder that is provided on the battery case lid of the sealed storage battery and that opens into the cell chamber of the battery case. In addition, the engagement protrusion is provided below the holding portion of the holding protrusion protruding from the upper surface of the lid, and the holding portion of the holding protrusion is provided.
In an engagement relationship above the engagement projection of the cap-shaped rubber valve.
Consisting of Te order.

[0005]

When the internal pressure of the gas generated in the battery during the initial charge of the storage battery rises, the cap-shaped rubber valve is pushed outward from the cylinder in a direction to escape from the cylinder, and expands and separates from the cylinder.
Even if Nukedeyo upwards Te, the engaging projection thereon
To suppress portion engages the restraining projection located in the engaging relationship towards
Therefore, the expanded rubber valve is prevented from falling out of the cylinder by the holding portion of the holding projection , so that the valve can be reliably prevented from coming off.
Brought to you .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a battery case cover provided on a battery case of a sealed storage battery, and a circular cylinder 3 communicating with and opening into a cell chamber 2 of the battery case is provided on the cover. Have. The above configuration is the same as that of the conventional storage battery shown in FIG. According to the present invention, as clearly shown in FIG. 2, the cap-shaped rubber valve 4 to be tightly fitted to the cylinder 3 is composed of a circular cap-shaped rubber valve main body 4a and an engaging projection 4b protruding on the outer periphery thereof. On the other hand, the battery case lid 1 has a small insertion space 5 outside the cylinder 3 and a projection 6 for holding provided with a holding portion 6a. In the illustrated example, the engagement projection 4b of the rubber valve 4 is formed in an annular flange shape at the lower end of the cap-shaped valve body 4a. Reference numeral 6 denotes a pair of cylinders 3 arranged on the left and right sides in the radial direction of the cylinder 3, and the shape thereof is a hook-shaped L-shaped projection.
The holding portions 6a, 6b are directed toward the peripheral side surface of the cylinder 3, and are horizontally projected with insertion spaces 5, 5 therebetween.

When the storage battery is initially charged, the rubber valve 4 is tightly fitted to the cylinder 3 of the lid 1 with its cap-shaped rubber valve body 4a as shown in FIG. The projections 4b are inserted through the insertion spaces 5, 5, and are positioned below the holding portions 6a, 6a of the pair of right and left holding projections 6, 6, and the holding of the holding projections 6, 6 is performed. The parts 6a, 6a
The cap-like rubber valve 4 has an engagement relationship above the engagement projection 4b . The work of inserting and providing an engagement relationship is easily performed because the engagement protrusion 5 is easily deformed by the rubber elasticity. Thus, the valve slippage prevention device of the present invention can be easily configured.

Thus, when initially charging the sealed storage battery provided with the valve stopper device of the present invention, the internal pressure of the gas generated in the cell chamber 2 increases, and the rubber valve 4 is moved from the inside by the internal pressure. It is pushed up away from the pushed open by the cylinder 3, the rubber valve 4, have a engaging projection 4b on the outer periphery, the upper side of Thus also the engaging projection 4b, the rubber
Outside the valve 4, the holding portions 6 a, 6 a of the holding projections 6 , which protrude from the battery case lid 1 in advance , are in an engagement relationship.
Thus, the engaging projections 4b engage with the holding portions 6a, 6a . That is, the holding portions 6a, 6a of the holding projections 6, 6 are:
The rubber valve 4 which is expanded against the internal pressure of the gas is suppressed from being withdrawn from the tube 3. Therefore, there is no need for a separately prepared holding lid for holding the rubber valve from its upper surface as in the related art.

The holding projections 6 may be replaced with the plurality of projections 6 as described above.
It may be formed in an annular suppressing projection having a cross-sectional shape such as a hook shape and an inner peripheral edge thereof having an annular suppressing portion.

[0011]

As described above, the device for preventing the valve of the sealed storage battery from coming off according to the present invention protrudes the cap-shaped rubber valve closely fitted to the cylinder provided on the battery case lid to the cap-shaped rubber valve body and the outer periphery thereof. consist of a an engaging projection, which the for engaging projections while closely fitted to the tube, allowed to exist in <br/> lower pressing section of suppressing a projection provided to the power tank lid,該抑e projection The cap-like rubber
Since was allowed exist in engagement with the upper projection for engaging the valve, preventing dislodgement initial charging time, the rubber valve expanded Ri by <br/> the increase in the internal pressure of the gas generated in the battery jar of the storage battery to be able to, follow
I, the use of conventional requested suppressed lid able to waste, and the economical and facilitate initial charging operation has the effect of such structures can be easily and inexpensively manufactured.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an example of a device for preventing a valve of a sealed battery according to the present invention from coming off.

FIG. 2 is an exploded perspective view of the apparatus of FIG.

FIG. 3 is a cross-sectional view of a conventional device for preventing a valve from being removed from a sealed storage battery.

[Explanation of symbols]

1 battery case cover 2 cell room 3
Tube 4 Cap-shaped rubber valve 4a Cap-shaped rubber valve body 4
b Projection for engagement 5 Space for insertion 6 Projection for holding 6
a Holding part

Claims (1)

(57) [Scope of request for utility model registration] 1. A cap-shaped rubber comprising a cap-shaped rubber valve main body and an engaging projection protruding from the outer periphery of a cylinder communicating with and opening into the cell chamber of the battery case of the sealed storage battery projecting from the battery case lid of the sealed storage battery. The valve is closely fitted, and the engagement projection is located below the holding portion of the holding projection protruding from the upper surface of the lid.
Engage the raised holding portion above the engagement projection of the cap-shaped rubber valve.
A device for preventing the valve of a sealed storage battery from falling out of the relationship .