JPH02205596A - Apparatus for attaching valve opening lever to feed nozzle - Google Patents

Abstract

PURPOSE:To permit a ready assembly of a valve opening lever and a sliding rod and an easy formation of the lever from resins having an engaging groove by forming a joint between a pivot pin of said sliding rod of the ball joint type for connection with an automatic valve closing mechanism and the downwardly oriented engaging groove of said lever. CONSTITUTION:A valve opening lever 8 through actuating a valve rod 7 to open and close a main valve 3 is formed from synthetic resins into one piece. This lever has a pivot end forming a fork 9, which holds a sliding rod 25 between its prongs and has a pivot pin 26 provided therebetween passing through the sliding rod 25 and a groove 11 formed to permit the passage of the pivot pin 26 from its lower edge. To connect the lever 8 with the sliding rod 25, the pivot pin 26 is engaged with the downwardly oriented groove 11 before attaching a lever guard 12 to a feed nozzle 1 with pins 15a and 15b. The lever guard 12 prevents disengagement between the lever 8 and the pivot pin 26.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a liquid supply nozzle, and more specifically, the present invention is characterized by a joint between a sliding rod and a valve opening lever that is unlocked by liquid level detection. between the liquid supply nozzles.

(Prior art) Self-closing liquid supply nozzles used at gas stations, etc. block the ventilation pipe that opens at the tip of the nozzle with the liquid in the tank, and direct the negative pressure generated at the orifice of the pipe to the diaphragm. The valve opening lever is actuated to release the restraint of the sliding rod, which serves as the fulcrum of the valve opening lever, by displacement of the diaphragm, thereby closing the flow path.

This type of liquid supply nozzle has an engagement mechanism between the diaphragm and the sliding rod, such as a coupling mechanism as seen in Japanese Patent Application Laid-Open No. 51-33331, that is, a tapered vertical rod that is integrated with the diaphragm. There is one in which a ball is fitted to one end of a sliding rod, and the vertical rod is pulled out from the sliding rod by displacement of a diaphragm, thereby releasing the restraint of the sliding rod.

On the other hand, in recent years, efforts have been made to reduce the man-hours for molding and assembling this type of liquid supply nozzle in response to demands for lower manufacturing costs. The method of inserting a common pin into both is still used, and in order to assemble the valve opening lever with the lever guard still attached, it is necessary to use a joining method of inserting a pin. However, there was a problem in that the number of man-hours for assembly could not be reduced as desired.

(Problems to be Solved by the Invention) The present invention was made in view of the above-mentioned problems, and its purpose is to provide an improved valve opening lever that can be processed and assembled very easily. The purpose is to supply liquid supply device a.

(Means for Solving the Problems) That is, in order to achieve the above problems, the present invention provides a mechanism for engaging and disengaging the sliding rod for holding the fulcrum of the valve opening lever and the automatic valve closing mechanism by interposing a ball in the shape of a wedge. In the liquid supply nozzle of the type that enables the valve opening lever, a downward engaging groove is provided at the pivot end of the valve opening lever, and a fulcrum pin provided on the sliding rod is engaged with the engaging groove. and a valve opening lever are combined.

(Example) Therefore, the illustrated embodiment will be described below.

Figure 1 shows a liquid supply nozzle with improvements made to each part. A valve 3, a valve opening lever 8 that opens and closes the main valve 3, a sliding rod 25 that serves as a fulcrum for the valve opening lever 8, and a locking of the sliding rod 25 depending on the liquid level in the tank. The automatic valve-closing mechanism 17 is configured to release the automatic valve-closing mechanism.

The main valve 3 has a main body part 4 molded from a synthetic resin material, and a rubber 5 is baked onto the part that abuts the valve seat 6 to integrate it. Compared to conventional main valves in which rubber is baked on the main valve body or rubber attached to the main body is held between support members f, the number of processing and parts is reduced. It can also be applied to double wells as shown in Figure 3.

On the other hand, the lever guard 1 that guards the valve opening lever 8
2 is constructed separately from the main body, and a pin 1 is attached to the main body of the liquid supply nozzle 1.
It is attached by 5a and 15b. As shown in FIG. 4, this lever guard 12 is integrally formed with an insertion part 13 into which one end of the notch 14 is located.
One end is inserted and the other end is fixed with the lever guard mounting pin 15a, or the holder cap is covered and this is fixed to the lever guard by snap fitting or welding. According to
Compared to the conventional structure in which both ends of the notch 14 are fixed with pins or the like, the assembly can be simplified and the accuracy of the mounting position can be improved.

On the other hand, is the automatic valve closing mechanism 17 shown in this figure the same as the valve opening lever 8 according to the present invention? As is well known, this automatic valve closing mechanism 17 has an opening 18a at the tip of the cylinder tip 19.
It operates to close the main valve 3 when the vent pipe 18 is blocked by liquid in the tank, and a negative pressure chamber 20 communicating with the vent pipe is always urged outward by a spring 21. A sliding rod 25 biased in the retracting direction by a weak spring 24 is inserted into a sleeve 23 provided on the main body of the liquid supply nozzle 1.
A tapered two-stage pin 27 fixed to the outer surface of the sliding rod 25 is fitted into the shaft hole of the sliding rod 25, and a pole 28 provided at the upper end of the shaft hole of the sliding rod 25 is interposed in a wedge shape to connect the two. configured to be combined.

On the other hand, the valve opening lever 8 that opens and closes the main valve 3 via the valve rod 7 is integrally formed of a synthetic resin material, and is shown in FIG.
), its pivoting end is a bifurcated 9 that sandwiches the sliding rod 25.
A downwardly directed groove 11 is formed on the opposing inner surfaces of that part to fit with the fulcrum pin 26 inserted into the sliding rod 25 and to introduce the fulcrum pin 26 from below the outer edge. ing.

In the embodiment configured as described above, in order to connect the valve opening lever 8 to the sliding rod 25, the valve opening lever 8 must be connected to the main body of the liquid supply nozzle 1 in a state before the lever guard 12 is attached. Concave groove 1 formed downward with the position indicated by the chain line
1 is engaged with the fulcrum pin 26. After the nozzle lever 8 is connected to the sliding rod 25 in this way, the valve opening lever 8 is moved to the position indicated by the solid line, and then the lever guard 1
2 to the main body of the liquid supply nozzle 1 with the dowels 15a and 15b, the assembly work is completed. and lever guard 12
When the valve opening lever 8 is installed, the lever guard 12
This prevents the valve opening lever 8 from moving to the position shown by the chain line, and as a result, the connection between the valve opening lever 8 and the fulcrum pin 26 is not released.

(Effects) As described above, according to the present invention, the downward engaging groove of the valve opening lever is aligned with the fulcrum pin of the sliding rod of the type that is connected to the automatic valve closing mechanism via the ball, so that the two are connected. This not only makes it extremely easy to assemble the valve opening lever and the sliding rod, but also allows the valve opening lever with the engagement groove to be easily molded from resin or the like. The liquid supply nozzle can be provided to the market at an extremely low cost.

[Brief explanation of the drawing]

FIG. 1 is a side view of a liquid supply nozzle showing an embodiment of the present invention;
Figure 2 (aXb) is a sectional view showing the main parts of the nozzle lever;
Figure 3.4 is a diagram showing the main valve and notch.

Claims (1)

[Claims] In a liquid supply nozzle of a type that enables engagement and disengagement between the sliding rod for holding the fulcrum of the valve opening lever and the automatic valve closing mechanism by interposing a pole in a wedge shape, a downward-facing shaft is provided at the pivot end of the valve opening lever. A fluid supply characterized in that the sliding rod and the valve opening lever are connected by providing an engaging groove and engaging a fulcrum pin provided on the sliding rod with the engaging groove. Attachment device for valve opening lever on nozzle.