JPH0412353Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a push button operating device applied to the operating section of a gas valve in a gas appliance, for example, and particularly to a locking device thereof.

(Prior art) Conventionally, this type of pushbutton device has a pushbutton that is inserted into a button hole of an operation panel so as to be pushable and rotatable, and a so-called push-button mechanism is used to create a position where the pushbutton is projected from the operation panel and a position where the pushbutton is pushed in. The one that can be operated in a switching manner is
44063, etc., but one push button is not used for both push operation and rotation operation, and only ignition and extinguishment are performed alternately by a push-up push mechanism, and therefore the firepower is reduced. Adjustments, etc. must be made separately using other mechanisms, such as lever operations, and the push button is structured so that it can be pressed at any time, so if a child or the like accidentally presses the push button in a dangerous area, it can be dangerous. There was a problem with that.

(Problem to be solved by the invention) The present invention has been made in view of the above-mentioned problems of the conventional technology, and its purpose is to provide so-called push button operation and firepower with one push button. The purpose of this invention is to provide a mechanism with a simple structure that allows both rotational operations that can be used for adjustment, etc., to be operated in common, and also prevents the push button from being pressed within a predetermined rotational range.

(Means for Solving the Problems) In order to achieve the above object, the locking device of the gas valve push button operation mechanism in the present invention has the following features:
The valve case body has a gas inlet and a gas outlet, and is equipped with a main valve, a safety valve, a needle valve for adjusting firepower, and a push button that is operated in common for push-button operation in the push direction and needle valve adjustment in the rotation direction. In the push button operation mechanism for gas valves,
The push button 3 is fitted into the button hole 2 of the operation panel 1 so as to be pushable and rotatable against the bias of a spring 4, and a circumferential lateral groove 5 formed on the outer circumferential surface of the cylindrical portion of the push button 3. Vertical groove 6 formed on the buttonhole peripheral wall
It consists of a cam pin 7 that is commonly fitted into the cam pin 7 and a cam plate 9 that is swingably provided around a pivot shaft 8 so as to correspond to the cam pin. The two opposing guide cams 10 and 11 are engaged with the cam pin 7 so as to maintain the pushed-in position, and are disengaged when pressed again to release the pushing-in, and the push button can rotate at the pushed-in position and the pushed-back position. provided, the push button 3
A mechanism for locking the button so that it cannot be pressed in a predetermined rotation range and a mechanism for releasing the lock are constituted by a protrusion 3b provided on the push button 3 and a stepped notch 1d provided in the button guide 1a of the operation panel 1. It is what it is.

(Function) In Figures 1 to 4, when the push button 3 is pushed in the direction of arrow A, the cam pin 7 moves along the vertical groove 6 from a to b in Figure 4, and when the button is released, a spring provided inside the button is released. Since the push-back force of 4 is applied, the cam pin 7 is pushed back from b to c, and the locking portion 11 of the cam 11 is pushed back.
It is supported by point a and stops at position c. For this reason, the push button 3 is held in the pressed position. At this push-in position C, the push button 3 is rotatable because the cam pin 7 is guided by the lateral groove 5.

Next, press pushbutton 3 again from push-in position C.
As the cam pin 7 is removed from c, the cam plate 9 moves to the side by the spring 12, and when the hand is released at that position, it moves from c to a and returns to its original position. The push button 3 is rotatable even in the return position a because the cam pin 7 is guided along the lateral groove 5 by the guide.

However, when the push button 3 is turned to a predetermined rotation range S, the protrusion 3b provided on the push button 3 appears as shown in FIG.
The push button fits into a step-shaped notch 1d provided in the button guide 1a on the operation panel 1 side, so even if the push button is pressed, it will not be able to be pressed because it will hit the wall 1d' of the notch 1d.

(Effects) In the present invention, the push button 3 is fitted into the button hole 2 of the operation panel 1 so as to be pushable and rotatable against the bias of the spring 4, and the push button 3 is formed on the outer peripheral surface of the cylindrical portion of the push button 3. A cam pin 7 and a cam plate swingably provided around a pivot 8 to correspond to the cam pin so as to be commonly fitted into the horizontal groove 5 in the circumferential direction and the vertical groove 6 formed in the peripheral wall of the buttonhole. 9, the cam plate 9 engages with the cam pin 7 so as to maintain the pushed position when the push button is pushed in, and when pushed again, it comes off and the pushing is released, and the push button is held in the pushed position and the pushed back position. Two opposing guide cams 10 and 11 are provided so as to be rotatable,
A protrusion 3b provided on the push button 3 with a mechanism for locking the push button 3 so that it cannot be pressed in a predetermined rotation range and a mechanism for releasing the lock, and a stepped notch 1d provided on the button guide 1a of the operation panel 1. With this configuration, one pushbutton can be used for both push and turn operations, ignition and extinguishing can be done by push and push operations, and firepower adjustment using the needle valve can be done by rotation. Since the button can be locked to prevent it from being pressed in a predetermined rotation range, it is safe even if children or others accidentally press the button in a dangerous area.
Such a mechanism can be implemented at low cost with a simple configuration.

(Example) A hollow cylindrical button guide 1a is integrally provided on the operation panel 1, and a button hole 2 is formed in this.
The vertical groove 6 of the cam pin 7 is provided in this button guide 1a.

The push button 3 has a small cylindrical part 3a integrally provided at the tip of the cylindrical part, and the small cylindrical part 3a is made to protrude from the inside of the button hole 2 to the outside.

The lateral groove 5 of the cam pin 7 is formed on the outer peripheral surface of the cylindrical portion.

The cam pin 7 has a small protrusion 7a protruding from a base 7b, and the base 7b has both vertical and horizontal grooves 5, 6, and the small protrusion 7a.
protrudes outward and engages with the cam plate 9. The cam plate 9 is formed into a fan shape,
The base is pivotally connected to the button guide 1a by a pivot 8 so as to be swingable. A spring 12 is provided on this cam plate 9 to always apply elasticity to the side. In FIG. 6, reference numerals 15 and 16 indicate the spring hanging portions.

When the pushbutton 3 is turned in the forward direction (arrow B), the cam pin 7 moves along the horizontal groove 5 toward the extreme end 5a, and therefore moves within the range from T to U as shown in FIG. When operated, T becomes maximum and U becomes minimum. When the push button 3 is turned from T in the opposite direction (arrow C), the cam pin 7 hits the starting end 5b of the lateral groove 5, and the cam pin 7 is pushed to the S position.

FIG. 2 shows a case where the present invention is applied to an automatic ignition gas valve. In the figure, the gas is inlet 21
From there, the gas passes through a safety valve 23, a main valve (not shown), and a needle valve 29, and then flows out from the gas outlet 22.

Now, when the push button 3 is pressed, the push rod 24 is pushed by the push piece 3c, the safety valve 23 opens, and the gas outlet 2
Gas flows out from 2. At the same time actuator 33
The igniter 33 is pushed by a, and the gas is ignited.

When the safety valve 23 is attracted and the push button 3 is released, the push button is returned to the intermediate position C by the internally energized spring 4 and enters the combustion state. Next, when the push button 3 is rotated, the connecting pin 34 rotates, and the needle valve 29 rotates together with this. Needle valve 2
9 rotates, the connecting pin 34 is guided by the cam surface 35a of the fixed cam 35 integrated with the needle case 31 and moves in the axial direction.

Therefore, since the needle valve 29 moves in the axial direction while rotating, the gas passage hole 36 is widened and narrowed.
Limit gas flow.

The push button 3 is formed into a hollow cylindrical shape, and is fitted into a cylindrical button guide 1a so that it can be rotated and pushed in like a dial, and the head 3a is made to protrude from the button hole 2.

The button guide 1a and the valve case body 20 are integrally connected.

The needle case 31 is integrally connected to the valve case body.

A main valve (not shown) is provided in parallel with the safety valve 23, and is pushed open by a second push rod (not shown) by the push piece 3c when the push button is pressed, and is pushed open at the same time as the safety valve 23.

[Brief explanation of drawings]

Fig. 1 is a front view of the operating section of the push button device according to the present invention, Fig. 2 is a longitudinal cross-sectional side view when the present invention is applied to an automatic ignition gas valve, and Fig. 3 is an explanatory diagram of the action of the cam plate and cam pin. , FIG. 4 is an explanatory view of the function of the cam pin and both vertical and horizontal grooves, FIG. 5 is a perspective view of the push button lock mechanism, and FIG. 6 is an exploded perspective view of the main parts. 1...Operation panel, 2...Button hole, 3...Push button, 4, 12...Spring, 5...Horizontal groove, 6...Vertical groove, 7...Cam pin, 8...Pivot, 9...Cam Plate, 10, 11...Cam, 1a...Button guide, 1d...Notch, 3b...Protrusion.

Claims (1)

[Scope of utility model registration request] The valve case body has a gas inlet and a gas outlet,
In the push button operation mechanism for a gas valve, which includes a main valve, a safety valve, a needle valve for adjusting firepower, and a push button that is operated in common for push button operation in the pushing direction and needle valve adjustment in the rotation direction, the push button 3 is fitted into the button hole 2 of the operation panel 1 so as to be pushable and rotatable against the bias of the spring 4, and a circumferential horizontal groove 5 formed on the outer peripheral surface of the cylindrical portion of the push button 3 and the button hole peripheral wall. It consists of a cam pin 7 that is commonly fitted into a vertical groove 6 formed in the cam plate 9, and a cam plate 9 that is swingably provided around a pivot shaft 8 so as to correspond to the cam pin. When the push button is pushed in, it engages with the cam pin 7 to hold the push-in position, and when pushed again, the push-in is released, and the push button is rotated in the push-in position and the push-back position. Guide cams 10 and 11 are provided, and a mechanism for locking the push button 3 so that it cannot be pressed in a predetermined rotation range and a mechanism for releasing the lock are provided on the push button 3.
The protrusion 3b provided on the button guide 1a of the operation panel 1
1. A locking device for a push button operating mechanism for a gas valve, characterized in that the locking device comprises a step-shaped notch 1d provided in a gas valve.