JPS6140720Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is capable of
This relates to a refueling nozzle in which an automatic valve closing mechanism is prevented from operating.

Generally, a refueling nozzle is constructed as shown in FIG. That is, 1 in the figure indicates the main body of the refueling nozzle,
The main body 1 is provided with a main valve 2, an automatic valve closing mechanism 3 having a diaphragm 3A, an oil supply pipe 4, a lever 5 for opening the main valve, and the like. An opening 7 is formed in the circumferential surface of the tip 6 of the oil supply pipe 4, and the opening 7 and the automatic valve closing mechanism 3 are connected via an air conduit 8. As a result, the main valve 2 is opened by the lever 5 and refueling work is performed, and when the lubricating liquid level rises, the opening 7 is closed, a pressure difference is generated before and after the diaphragm 3A, and the pressure difference automatically closes the diaphragm 3A. The valve mechanism 3 operates and automatically closes the main valve 2.

However, in the conventional refueling nozzle configured in this way, the opening 7 is located at the tip end 6 as shown in FIG.
Since the aperture 7 is opened on the circumferential surface of the fuel filler port, when the aperture 7 comes into contact with the inner circumferential surface of the fuel filler port of the fuel tank of the vehicle to be refueled, the aperture 7 is blocked by the inner circumferential surface of the fuel filler port. As a result, the refueling nozzle operates the automatic valve closing mechanism 3 as if the refueling liquid level were to block the opening 7, and the main valve 2 closes before refueling reaches the predetermined level. There were flaws.

In addition, as a result of the above, the refueling worker must constantly pay attention to the posture of the refueling nozzle so that the opening 7 of the refueling nozzle does not come into contact with the inner circumferential surface of the refueling port of the fuel tank, which is extremely dangerous. It also had the drawback of being troublesome.

The present invention improves the above-mentioned drawbacks and provides a refueling nozzle that eliminates the sudden activation of the automatic valve closing mechanism during refueling work and the need to constantly monitor the orientation of the refueling nozzle. be.

In order to achieve this objective, the feature of the configuration adopted by the present invention is that a recess is formed in the circumferential direction at the tip of the oil supply pipe, and the opening is located in the deep wall surface of the recess.

This will be explained below together with the embodiment shown in FIG.

FIG. 2 shows the distal end 6 of the oil supply pipe 4. A circular recess 9 is formed in the circumferential direction in the distal end 6, and an opening 10 is provided in the inner wall of the recess 9. The aperture 10 communicates with the self-closing valve mechanism 3 via the air conduit 8.

By configuring this embodiment in this way,
Even if the tip 6 comes into contact with the inner peripheral surface of the fuel filler port of the fuel tank, the opening 10 will not come into contact with the inner peripheral surface of the fuel filler port, and even if it is in a position facing the inner peripheral surface, the air will flow in an annular shape. It is possible to prevent an accident in which the automatic valve-closing mechanism 3 suddenly operates before the lubricating liquid level reaches the opening 10 by being sufficiently supplied from the recess 9 .

Note that the present invention is not limited to the above-mentioned embodiments, and various shapes such as a half-moon shape or a half-oval shape can be adopted for the recessed portion.

Further, the automatic valve closing mechanism 3 may be of a type provided on the side surface of the main valve 2, and furthermore, the main valve 2 may be a pistol-type refueling nozzle provided in the handle of the refueling nozzle.

The present invention has been described in detail above, and has the following effects.

Since a circumferential recess is formed at the tip of the refueling nozzle and the opening is located on the deep wall of the recess, even if the opening faces the inner peripheral surface of the fuel tank's refueling port, it is sufficient for the automatic valve-closing mechanism. air is supplied,
Accidents such as the main valve suddenly closing can be prevented.

In connection with the above item, it is convenient for the refueling operator because the refueling operator does not have to constantly watch the attitude of the refueling nozzle so that the opening 7 does not come into contact with the inner circumferential surface of the refueling port.

Since it is only necessary to change the pipe of the conventional refueling nozzle, it can be manufactured without requiring additional costs.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a conventional oil supply nozzle, and FIG. 2 is a sectional view showing the tip of the oil supply pipe of the oil supply nozzle according to the present invention. DESCRIPTION OF SYMBOLS 1... Main body, 2... Main valve, 3... Automatic valve closing mechanism, 4... Oil supply pipe, 5... Lever, 6... Tip, 8... Air conduit, 9... Recess, 10... Open hole.

Claims (1)

[Scope of utility model registration request] A main valve and an automatic valve closing mechanism are provided in a main body having an oil supply pipe, and an opening provided at the tip of the oil supply pipe and the automatic valve closing mechanism are connected via an air conduit,
In a refueling nozzle that closes the main valve via an automatic valve closing mechanism when the opening is closed due to a rise in the liquid level, a recess is formed in the circumferential direction at the tip of the refueling pipe, A refueling nozzle characterized in that the opening is located on a wall surface at a deep side of the recess.