JPH0351600Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a gas filling valve equipped with a nozzle guide into which a filling nozzle is inserted and a support arm supporting a valve body.

(Prior Art) Conventionally, gas filling valves in which liquefied gas is filled into a container by fitting a filling nozzle into the filling port of a gas container include a gas filling device disclosed in Japanese Utility Model Publication No. 50-36265.

In the above gas filling device, clamps are pivotally attached to both sides of a container housing a piston so as to be able to open and close freely, and a valve body that interlocks with the piston is provided at the front of the container, and a filling nozzle is attached to the tip of the valve body. It is constructed by protruding so as to be slidable under pressure. When the filling nozzle is inserted into the filling opening of the gas container by the operation of the piston, the tips of both clamps hug the rear surface of the filling opening,
At the same time, the filling nozzle is forced into an open state and filled with liquefied gas. Further, this gas filling device is used by being freely suspended from the ceiling of a workplace using a wire.

However, the above-mentioned gas filling device has a structure that
This inevitably increases the weight, making it difficult to handle during work, and fitting the filling nozzle into the gas container's filling port is time-consuming, which not only delays the filling process, but also makes it difficult to move the filling nozzle into the gas container's filling port. When the valve is inserted into the valve, the tip of the filling nozzle may hit the periphery of the filling port or the valve body, causing damage.

(Problems to be solved by the invention) The present invention was devised in view of the above-mentioned problems with conventional gas filling devices.
The object of the present invention is to provide a gas filling valve that protects a filling nozzle from hitting a filling port member during insertion work.

(Means for Solving the Problems) The gas filling valve of the present invention that achieves the above problems has a support arm attached to the gas filling valve body to support the lower surface of the valve body that reciprocates in conjunction with the piston. At the same time, at the bottom position of the filling nozzle,
The present invention is characterized in that a U-shaped nozzle guide is provided which fits into the lower part of the filling port of the gas container when the filling nozzle is inserted into the filling port of the gas container.

(Example) An example of the present invention will be described based on the drawings. In the drawings, A is a gas filling valve body. The main body A is composed of a container body 5 to which a clamp 3 is attached, and a valve body 1 having a filling nozzle 2 at its tip.

The container body 5 consists of a handle portion 5a and a cylinder 6, and a piston rod 8 is fixedly connected to a piston 7 within the cylinder 6, and projects forward from a front lid 5b of the container body 5.

Air passages 30, 30 are arranged on the front dead center side and the rear dead center side of the cylinder 6, respectively, and the air passages 30, 30 are communicated with the secondary side of the switching valve 28, and the air passages 30, 30 are connected to the secondary side of the switching valve 28. A squeeze pump is connected to the primary side. By switching the switching valve 28, compressed air is injected into the front and rear portions of the piston 7 at appropriate times to move the piston rod 8 forward and backward. The front lid 5b has mounting pieces 9 on both left and right sides thereof.
are provided, the clamps 3 are each pivotally mounted in a forwardly projecting manner, and a support arm 10 is attached to the lower part of the support arm 10 so as to project forward, and a roller 11 is provided at the distal end of the support arm 10.

The piston rod 8 has a pressing spring 12 fitted to its tip, and is provided with a locking fitting part 8a around the approximate center, and the locking fitting part 8a is provided with a filling nozzle 2 at its tip. A valve body 1 is fitted and protruded. A sliding surface 1a on the lower surface of the valve body 1 is supported by a roller 11 at the tip of the support arm 10 so as to be able to reciprocate.

The valve body 1 is formed into a tubular shape and is integrally provided with a conduit portion 13 through which high-pressure liquefied gas is introduced. The rear end of the valve body 1 is fitted and fixed to the locking fitting part 8a of the piston rod 8 to form a closed state, and the filling nozzle 2 is attached to the distal end of the valve body 1 through the nozzle body 14 through a pressure slide. It is protruded so that it can move freely.

The filling nozzle 2 is fitted from the tip side of the tubular nozzle body 14, and the fitting part 2a at the rear thereof is inserted into the valve seat 14a provided protrudingly inside the nozzle body 14. Attach the cap nut 1 to the threaded portion 2b at the rear end of the protruding fitting portion 2a through the packing 15.
6 is screwed on. Subsequently, the nozzle body 14 is screwed onto the front end of the valve body 1 with the pressure spring 12 at the tip of the piston rod 8 in contact with the recess on the rear surface of the cap nut 16. With this screw connection, the bag nut 16
The front packing 15 is always pressed against an annular convex portion 14a' projecting from the rear surface of the valve seat 14a, and the filling nozzle 2 is allowed to slide freely under pressure while projecting from the tip of the nozzle body 14.

In addition, the filling nozzle 2 has several through holes 17 formed on the circumferential surface of the fitting part 2a, and when the filling nozzle 2 is slid under pressure, the through holes 17 move toward the rear side of the valve body 1. The high-pressure liquefied gas from the conduit section 13 flows out to the nozzle hole 18. Furthermore, a ring-shaped packing 19 is fitted to the periphery of the tapered fitting portion 2a at the tip of the filling nozzle 2, so that the filling nozzle 2 is brought into close contact with the inner surface of the filling port 20 of the gas container B.

Note that there are press pins 21 and 2 on both sides of the rear part of the valve body 1.
1 is provided protrudingly.

The clamp 3 has its tip bent inward, has a contact surface 3b for contacting the pressing pin 21 on its rear inner surface, and is pivoted to the mounting piece 9 so as to be able to open and close. A movable end of a butterfly spring 23 that is wound around the pivot 22 is latched to the center of the clamp 3 to constantly press the clamps 3 in the closing direction. Press pins 2 on both sides of valve body 1
1 is brought into engagement abutment. Further, on both sides of the tip of the valve body 1, clamping pieces 24, 24 are attached which clamp the upper and lower surfaces of the clamp 3 and prevent the clamp 3 from moving up and down when it slides.

A nozzle guide 4 for guiding the filling nozzle 2 to the filling port 20 of the gas container B is attached to a position below the filling nozzle 2 of the gas filling valve main body A configured as described above.

The nozzle guide 4 has a U-shaped fitting part 4b formed at the tip of a long plate-shaped mounting part 4a.
The width of the fitting recess 4c is made slightly larger than the outer diameter of the valve body 1, and the fitting recess 4c is formed by protruding in both left and right directions.

The width of the fitting recess 4c is the filling port 2 of the gas container B.
The width is approximately the same as the width of the angular circumferential surface 25 of the lower portion, and the tip of the fitting portion 4b is opened at the tip. In addition,
When attaching the nozzle guide 4 to the filling port of the gas container B, the dimensions of the center of the filling nozzle 2 and the lower surface of the fitting portion 4b are set to the heights of the filling port 20 of the valve body 26 and the lower end of the square circumferential surface portion 25. While matching, the fitting part 4
Attach it so that the tip of b protrudes forward from the tip of the filling nozzle 2. Thus, the filling nozzle 2 is protected by the nozzle guide 4 at the front, below, and on both left and right sides.

Next, to explain the operation of the gas filling valve with the above configuration, hold the handle part 5a of the gas filling valve main body A, which is suspended vertically from the ceiling of the workplace, with your hand,
The front part of the fitting recess 4c of the nozzle guide 4 is fitted into the lower end of the square circumferential surface part 25 of the gas container valve body 26, and the tip of the filling nozzle 2 is guided to the filling port 20 of the gas container B and inserted. do.

Subsequently, the switching valve button 28a of the container body 5 is pressed to inject compressed air to the rear dead center side of the cylinder 6, and the valve body 1 interlocked with the piston rod 8 is advanced to move the filling nozzle 2 into the gas container B. filling port 20
Insert it inside. The valve body 1 and the nozzle body 14 follow the filling nozzle 2 and slide forward on the roller 11 of the support arm 10, and at the same time as the through hole 17 of the filling nozzle 2 is opened, the pressing pins 21 on both sides of the valve body 1 move forward. to close the clamp 3.

The closed clamp 3 then hugs the rear part of the valve body 26 of the gas container.

In this state, the liquefied gas introduced from the conduit portion 13 of the valve body 1 flows through the valve body 1 side passage 27 - through hole 17 -
The gas container B is filled through the nozzle hole 18,
After filling with a predetermined amount of high-pressure liquefied gas, the switching valve button 28a is pressed in the opposite direction to inject compressed air into the front dead center side of the cylinder 6. Therefore,
The piston rod 8 and the valve body 1 move backward to close the through hole 17 of the filling nozzle 2, and at the same time close the clamp 3.
Open and expand. Then, the filling nozzle 2 is removed from the filling port 20 of the gas container B.

Furthermore, when the filling nozzle 2 is inserted into the filling port 20 of the gas container B, or during filling, the filling nozzle 2
When a force is applied to shift the filling nozzle 2 vertically and horizontally, the filling nozzle 2 is held in the fitted state by the hugging action between the nozzle guide 4 fitted into the square circumferential surface and the clamp 3. Furthermore, as shown in FIG. 4, a fitting part 4b of the nozzle guide 4 provided at the lower part of the filling nozzle 2
is formed to protrude from the filling nozzle 2 forward and on both left and right sides, so that the filling nozzle 2 at the tip of the valve body 1 can be easily inserted into the gas container B and its valve body 2 during operation.
The filling nozzle 2 can be protected in the fitting recess 4c without being damaged by impact.

In the above embodiment, the clamps 3 are attached to both the left and right sides of the valve body 1, but the clamps 3 are attached only to one side of the valve body 1, and are attached to the valve body 26 of the gas container from the side. It may also be held (not shown).

(Operations and Effects) As described above, the present invention includes a supporting arm 10 that supports the lower surface of the valve body 1 that reciprocates in conjunction with the piston 7 on the container body 5 of the gas filling valve body A, and also provides a support arm 10 that supports the lower surface of the valve body 1 that reciprocates in conjunction with the piston 7. A U-shaped nozzle guide 4 that fits into the lower part of the filling port of the gas container B when the filling nozzle 2 is inserted into the filling port of the gas container B was installed at the bottom of the gas container B. Guides the angular circumferential surface at the bottom of the filling port without swinging,
Next, the nozzle guide 4 moves the filling nozzle to the gas container B.
By being able to be guided to the filling port of the container, insertion and insertion can be performed easily and reliably.

Further, the filling nozzle being filled with gas can be firmly held in the fitted state by the locking part located in front of the filling nozzle of the clamp that moves to open and close, and the nozzle guide, so that gas leakage does not occur.

Furthermore, since the nozzle guide is provided so as to protrude in front of the tip of the filling nozzle and on both the left and right sides,
Protects the tip of the filling nozzle and prevents it from being damaged by impact.

Thus, the intended purpose can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of a gas filling valve in which the present invention is implemented, Fig. 2 is a partially cutaway plan view of Fig. 1, Fig. 3 is a left side view of Fig. 1, and Fig. 4 is a filling valve. FIG. 5 is a partially cutaway enlarged plan view showing the nozzle part, FIG. 5 is a sectional view taken along the line V-V in FIG. 1, and FIG. 6 is a partially cutaway front view showing the gas filling valve attached to the filling port of the gas container. Figure 7 is a partially cutaway plan view of Figure 6;
FIG. 8 is an enlarged partially cutaway plan view showing the filling nozzle fitted into the valve body. In the figure, A: gas filling valve body, B: gas container, 1: valve body, 2: filling nozzle, 3: clamp,
4: Nozzle guide, 4b: Fitting portion, 4c: Fitting recess, 20: Filling port, 25: Square peripheral surface portion, 26: Gas container valve body.

Claims (1)

[Scope of utility model registration request] A container body 5 attached to the clamp 3 so as to be able to open and close freely;
It has a valve body 1 which interlocks with the piston 7 in the container body 5 and has a filling nozzle 2 protruding from its tip so as to be elastically slidable, and the filling nozzle 2 is fitted into the filling opening of the gas container B. In the gas filling valve body A, which is adapted to hold the gas container B by closing the clamp 3, the lower surface of the valve body 1, which reciprocates in conjunction with the piston 7, is supported on the vessel body 5. Support arm 1
0, and a U-shaped nozzle guide 4 is installed at the lower part of the filling nozzle 2, which fits into the lower part of the filling port of the gas container B when the filling nozzle 2 is inserted into the filling port of the gas container B. A gas filling valve featuring: