JPS6319726Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field This invention is used in the field of various gas appliances such as gas stoves, gas stoves, and bath burners.

b. Prior Art Gas appliances, especially gas stoves with automatic ignition devices, open and close the gas passage, open and close the electric circuit, and operate the electric ignition device by rotating the operating shaft. When operating the switch, the first and second switches are operated simultaneously to open the lock, but when the switch reaches the open position, only the second switch must be turned off, and the interlocking operation mechanism is It was complicated, required time and effort to operate, and was extremely troublesome. In particular, in push-and-turn type gas sticks, as seen in Japanese Patent Publication No. 54-24530, for example, the operating shaft is pushed in at the starting position and then turned in the opening direction, so there are two movements: a pushing action and a turning action. However, in the so-called one-touch type gas kettle, which only has a rotational operation, the operation is only a rotation. Therefore, it is mechanically difficult to turn on only the second switch after turning on the two switches.

c Purpose of the invention The purpose of this invention is to open and close the gas passage and open and close the first and second switches at the same time with a one-touch operation using only rotational motion, and to open and close the first and second switches simultaneously by loosening the rotational force of the operating shaft. The second purpose is to provide a switch operation device that can easily and reliably turn off the second switch.The second purpose is to simplify the mechanism of the switch operation section and eliminate the need for a separate accessory device or complicated mechanism. The point is that it has become possible to implement it in many existing types of gas kottok.

d Means for solving the problem In order to solve the above technical problem, the present invention:
A Kotoku body 3 having a gas inlet 1 and a gas outlet 2 is provided with a closure 4 for switching the gas passage from closed to open or vice versa, and an operating shaft 5 for rotating the operating shaft 5. 1st. 2nd two cams 6.7
In a gas tank in which each cam 6.7 operates a corresponding first and second switch 8.9, the first cam 6 is moved relative to the operating shaft 5 by a small angle θ. A support shaft 1 is provided with a gap 10 so as to rotate together with the first cam 5, and a support shaft 1 protrudes from the first cam 6 when the operating shaft 5 rotates.
A linking body 13 is provided that can eccentrically move left and right with 1 as a fulcrum, and a linking pin 18 that moves eccentrically and engages with the engaging portion 19 of the second cam 7 when the operation shaft 5 rotates in the forward direction is provided on the linking body 13. A return spring 12 is provided which returns the second cam 7 to its original position when the engagement is disengaged when the operating shaft 5 is released from the normal rotation.

Embodiment The operating shaft 5 is a round bar, but a part of the circumferential surface is cut flat in the axial direction to make it have a circular cross section.
The second cam 6.7 and the connecting body 13 are fitted into each other. The shaft hole 6a of the first cam 6 has a floating gap 10 of a small angle θ between it and the operating shaft 5, so that when the shaft 5 rotates in the direction of forward rotation (arrow A in Fig. 2), there is a delay of a small angle θ. The first cam 6 follows and thereafter rotates in the same body.

The shaft hole 7a of the second cam 7 is a round hole, and is therefore free to rotate relative to the shaft 5. The shaft hole 13a of the connecting body 13 is a hollow hole that is larger than the cross section of the shaft 5, and is free to move within a predetermined range in the horizontal direction with respect to the shaft 5.
It is defined so that it is fixed in a vertically divided groove 17 formed in 6 and is integral in the rotational direction. This link 13
The supporting shaft 11 is attached to the projecting piece 6b of the first cam 6, and the supporting shaft 11 can be used as a fulcrum for eccentric movement. Also, this linking body 13 has a linking pin 1 for the second cam 7.
8, and a concave engaging portion 19 on the corresponding second cam 7 side. This linking pin 18 and the engaging portion 19
When the operating shaft 5 is in the starting position, it is in the engageable position, engaged during forward rotation, and disengaged when the rotational force is released.

The second cam 7 has a protrusion 20 protruding in the circumferential direction and a stopper 20 provided on the holding frame 14 at the starting position.
It is received by the engine and allowed to rotate in the forward direction from the starting position, but is prevented from rotating in the opposite direction.

Switch 8 corresponding to the first and second cams 6 and 7.
One side of 9 (e.g. 8) is for opening and closing the electric circuit,
The other one (eg 9) is used to operate the gas igniter. Both switches 8 and 9 are fixedly mounted on the base plate 24 of the Kotoku main body 3 in a vertically stacked manner, and are connected to contact pieces 8a and 9a by corresponding cam protrusions 6b and 7b, respectively.
is now being pressed down. The operating shaft 5 and the closure 4 in the lock main body 3 are always coupled together in the rotating direction, and when the operating shaft 5 rotates the closure 4 in the positive direction from the starting position (closed), the gas vent opens. 4a matches the gas outlet 2.

e Action When the operating shaft 5 is in the starting position, the closing member 4 closes the gas outlet 2, and both the first and second cams 6.7 are also different from the corresponding switches 8.9. (Fig. 1, Fig. 2, Fig. 4)
figure).

When the operating shaft 5 is rotated in the positive direction (arrow A) using the operating knob 22 from this state, when the operating shaft 5 is first rotated by a small angle θ, the first
Since the cam 6 does not rotate, the support shaft 11 also remains stationary, but the engagement pin 15 integrated with the operation shaft 5 moves the linking body 13 radially outward (in the direction of arrow B) about the support shaft 11 as a fulcrum. Move eccentrically to Due to this eccentric movement, the linking pin 18 of the linking body 13 engages with the engaging portion 19 of the second cam 7 and becomes integrated in the forward rotation direction.

When the operating shaft 5 is further rotated in the opening direction, after the small angle θ, the first cam 6 rotates together with the operating shaft 5, and the second cam 7 rotates in the same body as the linking body 13. At the position rotated by a predetermined angle (approximately 90 degrees), the two corresponding switches 8.9 are turned on almost simultaneously. At the same time, the gas passage is also opened by the closure 4.

After that, or when the positive rotational force of the operating shaft 5 is released midway, the linking pin 18 of the linking body 13 that has been engaged with the engaging portion 19 of the second cam 7 due to the pressing force due to the eccentric movement is moved by the spring 23. At that moment, the second cam 7 is rotated in the reverse direction (in the direction of arrow C) by the return spring 12 that is energized by the second cam 7.
The protruding piece 20 is instantly returned to its original position in contact with the stopper 21. Therefore, only the second switch 9 corresponding to the second cam 7 is switched from switch-in to off.

f. Effects of the invention As explained above, this invention provides a linking body that can engage with the second cam at the starting position, and when the operating shaft is operated in the forward rotation direction, it engages by eccentric movement and moves the second cam to the second cam. By rotating the same body as the first cam, it is possible to operate both switches at the same time at the fully open position.If the forward rotational force is released at the fully open position or halfway, the engagement will instantly disengage and only the second cam will operate. can be automatically returned to its original position by a return spring and the second switch can be turned off.This series of operations can be performed with a simple configuration of a one-touch type gas kettle that operates only by rotational movement. It is reliable and smooth, and can be easily manufactured by simply installing two cams and a connecting body on the operating part without changing the internal structure of the gas tank, so it can be installed on many types of gas tanks, and the structure is simple and durable. It has practical effects such as being inexpensive.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional front view of a gas tank showing an embodiment of this invention, and Figures 2, 3, and 4 are respectively
A cross-sectional view of the A-A line, the B-B line, and the C-C line in the figure,
Figures 5, 6, and 7 are operational diagrams in Figures 2, 3, and 4, Figures 8 and 9 are operational diagrams in the fully open position, and Figure 10 is the main parts. FIG. 1...Gas inlet, 2...Gas outlet, 3...
Kotoku body, 4... Closing device, 5... Operating axis, 6...
First cam, 7...Second cam, 8...First switch, 9...Second switch, 10...Idling gap, 1
1... Support shaft, 12... Return spring, 13... Linking body.

Claims (1)

[Scope of utility model registration request] A Kotoku body 3 having a gas inlet 1 and a gas outlet 2 is provided with a closure 4 for switching the gas passage from closed to open or vice versa, and an operating shaft 5 for rotating the operating shaft 5. 1st. 2nd two cams 6.7
In a gas tank in which each cam 6.7 operates a corresponding first and second switch 8.9, the first cam 6 is moved relative to the operating shaft 5 by a small angle θ. A support shaft 1 is provided with a gap 10 so as to rotate together with the first cam 5, and a support shaft 1 protrudes from the first cam 6 when the operating shaft 5 rotates.
A linking body 13 is provided that can eccentrically move left and right with 1 as a fulcrum, and a linking pin 18 that moves eccentrically and engages with the engaging portion 19 of the second cam 7 when the operation shaft 5 rotates in the forward direction is provided on the linking body 13. A switch operating device for a gas tank, characterized in that it is provided with a return spring 12 that returns the second cam 7 to its original position when the engagement is disengaged when the operating shaft 5 is released from forward rotation.