JPS5826910Y2 - container capping device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cap device for a liquid container, such as a cap installed on a brake hydraulic oil tank of a field vehicle.

First, the general structure of this type of cap device used in automobiles will be explained with reference to FIG.

A flange 1b is formed in the round hole opening 1a on the top surface of the cylindrical container 1, and an inner cap 3 is attached to the top surface of the flange 1b through a packing 2. A pore 3a for air venting is provided at the center to prevent internal pressure (negative pressure) from being generated when the liquid level drops.

Further, on the hem edge of the lower end of the peripheral wall of the outer cap 4 that covers the inner cap 3, a plurality of plate portions on the circumference are folded inward to form a flange 4a, and this flange 4a forms a flange. The collar 4a is hooked on the lower surface of the flange 1b, that is, the collar 4a is inserted through the missing part of the flange 1b.

A compression spring 5 is interposed between the outer cap 4 and the inner cap 3, and the inner cap 3 is biased against the flange 1b.

In the conventional capping device configured in this way, even if the liquid level fluctuates due to vibrations or acceleration/deceleration of the vehicle body, the container opening 1
Since a is tightly sealed with the gasket 2, the temperature of the liquid does not occur from the opening 1a, and when the liquid is discharged from the supply port (not shown) of the container 1, the pore 3
Outside air flows into the container 1 through a, thereby keeping the inside of the container 1 at atmospheric pressure at all times.

However, a small amount of liquid that overflows from the pore 3a into the space between the caps 3 and 4 due to the fluctuation of the liquid level splashes due to the vibration etc. and seeps into the shoulder of the container 1, resulting in the liquid leaking out. In addition to being wasted unnecessarily, there was also the problem of staining the area around the container 1.

The present invention has been made in order to solve the above-mentioned problems, and the purpose of the present invention is to provide a cap device for a container that prevents the liquid overflowing from the air vent pores from seeping out. It's about doing.

Hereinafter, the present invention will be explained based on an illustrated embodiment.

In the capping device of the embodiment, as shown in FIG.
The brim of the cap-shaped holder 6 overlaps the circumferential part 3b of the inner cap 3, and between the retractable floor surface of the center of the inner cap 3 and the ceiling surface of the holder 6, there is a plug-shaped upper end. A cylinder 8 sealed with a gasket 7 is held in the vertical direction.

Note that a vent hole 6a is provided at one location on the bottom of the cylinder 6, while a vent hole 6a is provided at a mid-height portion of the peripheral wall of the cylinder 8.
A ventilation hole 8a is provided.

A cylindrical float 9 made of a light specific gravity material such as nylon is loosely inserted into the inner hole of the cylinder 8, and a vent 7L9a is provided on the center line of the float 9.

The outer cap 10 is similar to the outer cap 4 described above, except that a raised part is formed at the center of the upper surface to allow the holder 6 to escape.
The compression spring 5, which is interposed between both caps 10 and 3, has the function of pressing the holder 6 against the inner cap 3, and the function of pressing the inner cap 3 against the flange 1b. It serves both functions.

In the cap device of the embodiment configured as described above, in a normal state where no external force is applied to the container 1, the flows 1 to 9 are at a low position (the position shown in FIG. 2) resting on the inner cap 3, and therefore The inner space of 1 is as follows: pore 3a → float ventilation hole 9a → cylinder extraction hole 8a → holder ventilation hole 6a → holder 6
- The space between the outer caps 10 communicates with the outside air through a path, thereby maintaining the inside of the container 1 at atmospheric pressure.

Furthermore, when external force acceleration is applied to the container 1 and the liquid level shakes, as shown in FIG. 8a is closed by the circumferential surface of the float 9, thereby preventing the liquid in the cylinder 8 from scattering to the outside.

During this time, the inside air of the container 1 is temporarily cut off from the outside air, but since the time limit is short, the operation of the container 1 is not affected.

In addition to the function of sealing the inner hole of the cylinder 8, the seal 7 has the function of absorbing assembly play between the holder 6, inner cap 3, and cylinder 8, so each of these The molded dimensions of the parts may be of coarse precision, and therefore the cost of additional parts required to construct the embodiments is extremely low.

As described above, according to the container cap device according to the present invention, the outside of the pore of the inner cap is separated from the periphery by the cylinder, and the float is inserted into the inner hole of the inner cap. In the event that liquid leaks from the pore into the compartment, the vent hole to the outside of the cylinder is closed by a float, so even if the liquid level inside the container fluctuates, it will not be used unnecessarily. The liquid does not seep out, which has the effect of improving the usability of the container.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional capping device, FIG. 2 is a sectional view of a container capping device showing an embodiment of the present invention, and FIG. 3 is a partial operational view of FIG. 2. 1...Container, 1a...Container opening, 1b
...Flange, 2...Packskin, 3.
...Inner cap, 3a... Pore, 5
...Spring, 8...Cylinder, 8a...
...Drilling hole, 9...Float, 9a...
...Vent hole, 10...Outer cap.

Claims (1)

[Scope of utility model registration request] an inner cap that contacts the opening surface of the container opening flange via a packing; an outer cap that covers the inner cap and whose lower hem edge is locked to the flange; and an outer cap that is sandwiched between the two caps. In a cap device formed by a spring that presses and biases the inner cap against the flange, and in which a pore for air vent is formed in the center of the inner cap, the center of the inner cap is The outside of the float is separated by a cylinder whose tip is closed and a hole is opened at the middle height of the peripheral wall, and inside the cylinder is a float with a ventilation hole passing through it on the center line. A cap device for a container, characterized in that the cap device is fitted with a.