JPH066459Y2 - Liquid outlet plug for storage battery - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a liquid outlet plug for a storage battery.

[Conventional technology]

BACKGROUND ART Conventionally, a storage battery liquid spout consisting of a tubular body having an exhaust hole and a plurality of inclined splash-proof plates arranged in the tubular body at intervals in the vertical direction has been known.

[Problems to be solved by the device]

When the storage battery liquid port plug is used by being attached to the liquid port of each cell of an automobile storage battery, for example, when vibration or gas is generated during use, electrolytic spray splashes to the outside with these inclined splash-proof plates. It has the function of preventing discharge and scattering, and of causing the electrolytic solution adhering to these splash-proof plates to flow back into the cell.
In particular, in the case of a battery for automobiles, when the vibration becomes violent, the splashes fly up on the splash-proof plate and gradually rise up to the upper inclined wall, and finally pass through the wall and leak out from the exhaust hole. Further, since the air inside the liquid stopper also flows in and out of the liquid stopper, the electrolytic solution splash also rises and eventually tends to be scattered and leaked to the outside. However, particularly in recent years, improvement of overflow resistance is required as a liquid outlet plug for an automobile storage battery.

[Means for Solving the Problems]

The present invention provides a liquid outlet plug for a storage battery that satisfies the above requirements and has significantly improved overflow resistance, and has a cylindrical body having an exhaust hole and a vertical gap inside the cylindrical body. In a liquid mouth plug for a storage battery, which is composed of a plurality of inclined splash-proof plates disposed in the existing manner, these splash-proof plates are provided with downward projecting walls, and the lower splash-proof plates are provided below the downward projecting walls. Between the and, there is a gap over the entire width.

Further, the above-mentioned storage battery liquid stopper of the present invention is provided with a structure that is extremely excellent in the ability to collect and recirculate electrolyte droplets, and these inclined splash-proof plates have a wide width that descends toward the center. Of the inclined plate, which are alternately arranged on the left and right along the central axis of the inclined plate, and the downward projecting wall is formed on the longitudinal projecting wall located on the lower end side of the splash-proof plate and extending over its entire width. Become.

[Action]

In the storage battery liquid port plug of the present invention, the downwardly projecting wall provided on the splash-proof plate is caught by the electrolytic solution mist in the gas, and the electrolytic solution splashes jumping on the splash-proof plate can be caught on the splash-proof plate. Instead of going up to the splash-proof plate, it goes downwards along the downward projecting wall, and the exhaust gas also blocks upward momentum by this downward projecting wall and creates a downward airflow, The chances of capturing the liquid mist by the water-proof plate are increased, and the leakage of the electrolytic solution that gradually increases as it travels through the water-proof plate is prevented, and the captured electrolytic solution has voids over its entire width. Since the solution immediately flows down and recirculates immediately through, there is no retention of the electrolytic solution, and the overflow resistance effect is significantly improved as a whole.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 and 2 (a) (b) show an example of the present invention.
Is an exhaust hole 2 on the top wall 1a made by synthetic resin molding.
Shows a cylindrical tubular body having an opening at the lower end of the tubular body 1, a slit-shaped gas inlet 3 at the lower end of the peripheral side wall 1b, and an annular fitting groove at the inner periphery of the lower end of the peripheral side wall. Have 4. The separately formed splash-proof mechanism molded body 5 is inserted into the cylindrical body 1 through the lower end opening surface thereof, and the outer peripheral edge of the circular substrate 5a at the lower end of the splash-proof mechanism molded body 5 is inserted into the annular fitting groove 4 By accommodating the inside, the storage battery liquid port plug P is configured. The splash-proof mechanism molded body 5 is provided with a central axis 5b and a plurality of inclined splash-proof plates 5c descending toward the center side at predetermined intervals in the longitudinal direction of the central axis 5b. In the illustrated example, it is composed of six fan-shaped inclined splash-proof plates 5c, 5c, which are arranged so as to alternately project to the left and right, and these are arranged in the tubular body 1 respectively. When the arcuate outer end of the splash-proof plate 5c is closely fitted to the inner peripheral surface of the cylindrical body 1 and mounted, the lower end is located between the splash-proof plates 5c, 5c, 5c and the gas inflow hole 3 described above. The gas flow passage 6 having a jagged shape, the upper end of which communicates with the exhaust hole 2 in the top wall of the tubular body 1, is formed. Reference numeral 7 denotes a tab ear piece protruding from the circular substrate 5a of the splash-proof plate 5 fitted in the slit-shaped gas inflow hole 3 at the lower end of the tubular body 1. The configured liquid mouth plug P has a rotary engaging groove 8 for coin insertion and a cylindrical body 5 on the upper surface of its top wall.
Has a threaded portion 9 on the liquid port provided in the lid of the battery. An explosion-proof ceramic filter 10 may be interposed between the top wall of the liquid port plug P and the inside of the splash-proof mechanism molded body 5 as shown by phantom lines. The above configuration
Although it is not different from the conventional liquid spout, in the case of the present invention, the downward projecting walls 5d are integrally provided on the splash-proof plates 5c, 5c, ... And below each of the downward projecting walls 5d. A space 11 is provided over the entire width between the lower splash-proof plate 5c and the downward projection wall 5d is preferably integrally formed when the splash-proof plates 5c, 5c, ... Are molded. . It is not necessary to provide the downward protruding wall 5d on all the splash-proof plates as shown in the figure, but it is sufficient to provide the downward projecting walls 5d on a plurality of splash-proof plates 5c in the middle thereof. Also, its preferable shape is as shown in FIG.
It is preferable to form it in the longitudinal direction over the entire width of 5c, and it is preferable to make its position exist at the lowest end edge. Further, in the illustrated example, the downward projecting wall 5d is preferably hung in parallel with the central axis 5a because it is easy to manufacture in terms of molding, and in that case, the downward length of the downward projecting wall 5d takes into consideration gas flow resistance and the like. However, it can be formed longer than that shown. Further, in the illustrated example, the downward protruding wall 5d is an inclined splashproof plate.
It is provided at the lower end edge of 5c, but in the middle of the lower end edge and the upper end edge, the downward protruding wall in the middle of the entire length is replaced by the downward protruding wall of the lower end edge, or It can be added separately. When an additional intermediate protruding wall is provided, the protruding length is preferably slightly shorter than the protruding length of the downward protruding wall 5d at the lower edge.

When the liquid port plug P of the present invention is used by hermetically fitting it to the liquid port for each cell of the lid of the automobile storage battery, the electrolytic solution flowing from the gas inflow hole 3 at the lower end of the tubular body 1 is used. The gas containing mist collides with the downward projecting wall 5d provided on the splash-proof plate 5c while passing through the jagged labyrinth 6 and produces a downward airflow. Therefore, the electrolytic solution mist in the gas has an opportunity to be captured by the downward protruding wall and also by the downward flow of the electrolytic solution mist. Further, the captured electrolytic solution flows down along the splash-proof plate 5c, and smoothly and quickly through the void 11 across the entire width below the downward protruding wall 5d of the splash-proof plate 5d located on the downstream side. Flow down to reflux. On the other hand, the electrolytic solution splashed by the vibration of the automobile or the electrolytic solution that rises along the rising gas flow due to the rising gas flow is hindered from rising by the downward protruding wall, thus discharging the electrolytic solution. External leakage and overflow from the hole 1 are prevented.

Next, an overflow vibration test was performed on the batteries incorporating the liquid mouth plug of the present invention and the conventional liquid mouth plug having no downward protruding wall, respectively. The maximum liquid level of the battery is U ± 0 mm, and the charging method is 14.
It was performed by 4V constant voltage charging. The test results are shown in FIG. It was confirmed that the overflow resistance curve A of the liquid mouth plug of the present invention was remarkably improved as compared with the overflow resistance curve B of the conventional liquid mouth plug. INDUSTRIAL APPLICABILITY The present invention brings about the same effect even when the downward projecting wall is integrally formed with these spout-proof plates of the liquid port plug of the type in which the tubular body and the plurality of inclined splash-proof plates are integrally molded.

[Effect of device]

Since the liquid mouth plug of the present invention is provided with the downward projecting wall on the plurality of splash-proof plates, it has a remarkably excellent trapping effect of the electrolytic solution mist as compared with the conventional liquid spout made of the splash-proof plate lacking the downward projecting wall. Not only can it be improved, but since there is a gap over the entire width below the downward protruding wall of the splash-proof plate and between the splash-proof plate below it, the trapped electrolyte solution can be filled in the gap. Therefore, it is possible to smoothly and quickly carry out the flow-down and reflux, thus preventing the electrolytic solution from staying in the jagged exhaust maze, and thus significantly improving the overflow resistance as a whole. In this case, when the downward projecting wall is located on the lower end side of the splash-proof plate and provided over the entire width thereof, the above-mentioned effect is more favorably obtained.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an embodiment of the present invention, and FIGS. 2 (a) (b).
Fig. 3 is an exploded perspective view thereof, and Fig. 3 is a graph comparing the overflow resistance characteristics of the liquid mouth plug of the present invention and the conventional liquid mouth plug in the overflow vibration test. 1 ... Cylindrical body, 2 ... Exhaust hole, 3 ... Gas inflow hole, 5 ... Splash-proof mechanism molded body, P ... Liquid port plug, 5c ... Inclined splash-proof plate, 5d ... Downward protruding wall, 11 ... … Void

Claims (2)

[Scope of utility model registration request] 1. A storage port for a storage battery, comprising a tubular body having an exhaust hole and a plurality of inclined splashproof plates arranged in the tubular body at intervals in the vertical direction. A liquid battery stopper for a storage battery, wherein a downward projection wall is provided on the splash-proof plate, and a gap is formed over the entire width between each of the downward projection walls and the lower splash-proof plate. 2. The inclined splash-proof plate is composed of a wide inclined plate descending toward the center, and is alternately arranged on the left and right along the central axis thereof, and the downward projecting wall is formed of the splash-proof plate. The storage battery liquid spout according to claim 1, wherein the storage battery liquid spout is located on the lower end side and is formed on an elongated projecting wall over the entire width thereof.