JP2001027337A - Gas cock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use the parts of gas cocks different in function in common and to reduce the manufacturing cost by forming a first butt section abutting on a stopper pawl at the ignition position and not abutting on it when a stopper is moved to a rotating action shaft side and a second butt section specifying the rotation terminal position of the rotating action shaft. SOLUTION: When a rotating action shaft 2 is rotated to the ignition position, a stopper pawl 62 on the outer periphery of a stopper 6 abuts on a first butt section 10b, and the further rotation of the stopper 6 is prohibited. when the stopper 6 is lifted, the stopper pawl 62 does not abut on the first butt section 10b formed at the abutting position of the stopper pawl 62 in the lowered state of the stopper 6, the rotating action shaft 2 is further rotated to reach the slow fire position, then the stopper pawl 62 abuts on a second butt section 10c. Most of parts can be used in common by newly assembling a cam plunger and a stopper in the cam plunger fitting space of a gas cock different in type from the gas cock that a coupling pawl 53 on the outer periphery of a cam plunger 5 is coupled with a coupling groove 61 on the inner periphery of the stopper 6 for a run-in action.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas cock for adjusting the amount of gas supplied to a gas burner by turning a turning operation shaft to adjust the heating power. The present invention relates to a gas cock that, after igniting a gas burner, further drives a rotary operation shaft beyond an ignition position.

[0002]

2. Description of the Related Art As a conventional gas cock of this type, for example, according to Japanese Utility Model Publication No. 4-24310, a valve closing position is set to 0 degree, and a rotary operation shaft is rotated to an ignition position set at 115 degree. After igniting the gas burner and returning the rotating operation shaft to the 95-degree full open position, the thermal power is adjusted between the flash position set at the 150-degree position and the weak position set at the 45-degree position. It is known to do so. In a gas cock of the type that drives the rotary operation shaft further than this type of ignition position, when the rotary operation shaft is rotated from the valve closing position to the ignition position, the rotation operation shaft is restricted so as not to exceed the ignition position. In addition, a mechanism is required that can rotate to the low-fire position after ignition is completed.

[0003]

In addition to the gas cock operated to drive over the ignition position, the fully open position is set before the ignition position, and after the ignition, the thermal power is adjusted from the valve closing position to the fully open position. As a result, there is a gas cock of a type in which a driving operation beyond the ignition position cannot be performed after ignition. The above-mentioned conventional gas cock of the type that can be driven in and the gas cock of the type that cannot be driven in are designed completely independently and have no parts that can be shared. In Japan, gas cocks of the type that cannot be driven in are more frequently used, so they can be manufactured in large quantities and reduce the cost of gas cocks. Failure occurs.

[0004] In view of the above problems, an object of the present invention is to provide a gas cock that cannot be driven in and a gas cock that can be driven in and can be used in common with components.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a rod-shaped valve rod which can reciprocate in the axial direction with an engaging pin perpendicular to the axial direction protruding from the rod. A rotary operation shaft in which a split groove is engraved and an engagement pin is movably engaged in the split groove, an urging means for urging the valve rod toward the rotary operation shaft, and closing the rotary operation shaft At the time of pivoting operation from the position to the valve opening direction, it engages with the above-mentioned engagement pin, moves in the axial direction in conjunction with the rotation of the rotation operation shaft in the valve opening direction, and moves the valve rod with the urging means. A cam plunger that moves against the force and removes the rotational force in the valve-opening direction with respect to the rotation operation shaft to release the engagement with the engagement pin and move the valve rod back by the urging force of the urging means. In a gas cock provided with a cylinder, a cylindrical stopper is loosely fitted on the outer periphery of the cam plunger, and the stopper is rotated in the axial direction. A second urging means for urging the operating shaft side is provided, and an engaging claw is protruded from an outer peripheral surface of the cam plunger, and the engaging claw is engaged when the engaging pin is engaged with the cam plunger. When the engagement pin is disengaged from the cam plunger, the stopper is moved by the second urging means toward the rotation operation shaft. An engagement groove that allows movement is formed on the inner peripheral surface of the stopper, and a stopper claw is projected from the outer peripheral surface of the stopper, and the rotation operation shaft is opened from the closed position on the inner surface of the case body surrounding the stopper. When the rotary operation is performed in the direction of rotation, the rotation position of the rotary operation shaft is restricted by contacting the stopper claw at the ignition position set in the middle of the rotation, but when the stopper is moved to the rotation operation shaft side, the stopper is stopped. A first abutting portion that does not abut against the claw, and a stopper Parts is characterized in that the formation of the second abutting portions defining a rotational end position of the rotation operating shaft in a state that has moved to the pivoted shaft.

The function of engaging the rotation operation shaft and reciprocating the valve rod is shared by the cam plunger, and the function of regulating the rotation of the rotation operation shaft at the ignition position and the rotation end position is shared by the stopper. The cam plunger and the stopper according to the present invention can be incorporated into a space for mounting the cam plunger in a gas cock of a type that cannot be driven in. Thereby, most of the parts other than the cam plunger in the gas cock of the type that cannot be driven in can be shared.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, reference numeral 1 denotes a gas cock according to the present invention. Reference numeral 2 denotes a rotating operation shaft. As shown in FIG. 2, when the valve closing position (stop) is set to 0 degree and the ignition operation position (ignition) is set to a position of 115 degrees at a stretch, the rotating operation shaft becomes Further rotation is prohibited at the ignition position, and an ignition device (not shown) operates to ignite a gas burner (not shown). When the ignition is completed, the user releases the hand from the rotating operation shaft 2 so that the rotating operation shaft 2 automatically returns to the fully open position (full open) set at the position of 95 degrees. Thereafter, the rotating operation shaft 2 can be rotated to a low-fire position (low-fire) set at a position of 150 degrees beyond the ignition position, and a low-fire position (low-low) set at a position of 45 degrees from the low-light position is set. ) Can be adjusted freely. Then, after the cooking is completed, the rotary operation shaft 2 is returned to the valve closing position.

As shown in FIG. 1, a gas cock 1 has a tapered closing member 3 incorporated therein. The amount of gas supplied from 11 to the gas burner is adjusted. Further, a valve stem 4 is attached through the center of the closet 3. FIG.
The valve stem 4 is held reciprocally in the axial direction with the vertical direction as the axial direction. The valve setter 41 fixed to the valve stem 4 and forming a part of the valve stem 4 is perpendicular to the axis. The engagement pin 42 is fixed. Rotating operation shaft 2
A split groove 21 is engraved at the end of the groove. An engaging pin 42 is located in the split groove 21. When the rotary operation shaft 2 is rotated, the engagement pin 42 is interlocked with the rotary operation shaft 2. Rotate. Referring also to FIG. 3, the cam plunger 5 is formed in a substantially cylindrical shape, and a mountain-shaped cam 51 is formed at the upper end. A cover plate 7 is screwed to the case 10 of the gas cock 1, and a half-moon-shaped window hole 71 corresponding to the cam 51 is formed in the cover plate 7. The cam 51 is inserted into the window hole 71 when the rotary operation shaft 2 is in the valve closing position. When the rotary operation shaft 2 is rotated toward the ignition position, the cam 51 sinks below the cover plate 7. Then, the cam plunger 5 is moved away from the cover plate 7, that is, downward. The inner peripheral surface of the cam plunger 5 has vertical grooves 5 into which both ends of the engaging pin 42 are inserted.
2 is engraved. The vertical groove 52 includes a slope portion 52a formed at a lower portion and a straight portion 52b continuing upward from the slope portion 52a. The cam plunger 5 is urged upward by a spring 5a, and the valve rod 4 is urged upward by a spring 4a. Is the slope 5
When the rotary operation shaft 2 is turned to the ignition position, the turning power is transmitted from the engagement pin 42 to the cam plunger 5. Both ends of the engaging pin 42 and the inclined surface 52a rotate to the ignition position without being shifted by the frictional force. Therefore, as shown in FIG. 5, as the cam plunger 5 descends, the valve rod 4 also descends and pushes the valve body 1a of the electromagnetic safety valve. At this time, gas is supplied from the gas discharge port 12 to the pilot burner. In this state, an ignition device (not shown) operates to ignite a gas burner (not shown). A thermocouple heated by a flame is attached near the gas burner, and the electromagnet incorporated in the safety valve is excited by the thermoelectromotive force of the thermocouple, so that the valve shaft extending below the valve body 1a is attracted. The valve element 1a is kept open. When the ignition is confirmed and the hand is released from the rotary operation shaft 2, both ends of the engagement pin 42 slide on the inclined surface 52a and move to the straight portion 52b by the urging force of the spring 4a. Then, as shown in FIG. 6, the valve rod 4 is pushed upward by the urging force of the spring 4a and separates from the valve body 1a of the safety valve. However, since the electromagnet in the safety valve is excited, the valve body 1a does not move in the open state. On the other hand, a pair of engaging claws 53 is provided on the outer peripheral surface of the cam plunger 5 so as to protrude. 61
Is engraved. The engagement groove 61 includes a slope portion 61a and a straight portion 61b continuous with the slope portion 61a. When the turning operation shaft 2 is in the valve closing position, the engaging claw 53 is in contact with the inclined surface 61a. When the turning operation shaft 2 is turned from the valve closing position to the ignition position, the turning force is applied to the engaging claw 53. The engaging pawl 53 and the slope 61a are not displaced by the frictional force during rotation. Then, as shown in FIG. 5, the cam plunger 5 descends during the rotation, so that the stopper 6 also descends along with the cam plunger 5 while resisting the urging force of the spring 6a. FIG.
Release the hand from the rotating operation shaft 2 as shown in FIG.
Is slightly returned, the engaging claw 53 moves from the slope portion 61a to the straight portion 61b, and the stopper 6 is pushed upward by the urging force of the spring 6a.

A single stopper pawl 62 is provided on the outer peripheral surface of the stopper 6. Referring to FIG.
A first abutting portion 10b is formed on the inner peripheral surface of the first abutting portion 10b for stopping the further rotation of the stopper 6 with the stopper claw 62 in contact with the rotating operation shaft 2 rotated to the ignition position.
However, the first abutting portion 10b is formed at a position where it comes into contact with the stopper claw 62 in a state where the stopper 6 is lowered, and when the stopper 6 is pushed up by the spring 6a as described above, the stopper is stopped. The claw 62 does not come into contact with the first abutting portion 10b. Then, the rotation operation shaft 2 can be further rotated, and the stopper pawl 6
The rotation operation shaft 2 can be rotated until the second abutment comes into contact with the second abutting portion 10c. The second abutting portion 10c is provided with the stopper pawl 62 when the rotary operation shaft 2 has reached the flashing position.
Are formed so as to abut. When the rotary operation shaft 2 is returned to the valve closing position, the stopper claw 62 is
a so that the rotation operation shaft 2 cannot be further rotated in the return direction.

The gas cock 1 is a type of a gas cock which can be turned to a flashing position beyond the ignition position as shown in FIG. 2, but the turning operation shaft 2 is once turned to the ignition position. Thereafter, when changing to a gas cock of a type that cannot be rotated beyond the fully open position, the cam plunger 5 and the stopper 6 may be removed, and one dedicated cam plunger may be set.

Further, in the above-described embodiment, the ignition is performed in the fully open state, and after the ignition is further performed, the heating power is reduced to the low temperature. However, for example, as shown in FIG. It may be configured so that the full opening state is obtained by performing the driving operation further. In recent years, the use of high-calorie gas burners, which have a large maximum combustion volume, has increased.However, high-calorie gas burners can sufficiently ignite even at medium heat, and the ignition sound becomes stronger when ignited in the fully open state. Or, the fire may overflow from the cooking pot, and the user may be surprised.

[0012]

As is apparent from the above description, according to the present invention, a gas cock of a type that can be driven over the ignition position and a gas cock of a type that cannot be driven can largely share parts. It is possible to reduce the manufacturing cost of a gas cock that can be driven in with a small number of products.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a rotation phase of a rotation operation shaft.

FIG. 3 is an exploded perspective view showing the shapes of a cam plunger and a stopper.

FIG. 4 is a IV-IV diagram in FIG.

FIG. 5 is a sectional view showing a state at the time of ignition.

FIG. 6 is a sectional view showing a state after ignition.

FIG. 7 is a diagram showing another example of the rotation phase of the rotation operation shaft.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gas cock 2 Rotating operation shaft 3 Closer 4 Valve stem 5 Cam plunger 6 Stopper

Claims (1)

[Claims] An engaging pin perpendicular to the axial direction is protruded from a rod-shaped valve rod that is reciprocally movable in the axial direction, and a split groove is formed at the tip, and the engaging pin moves in the split groove. A rotating operation shaft that freely engages, an urging means for urging the valve rod toward the rotation operation shaft, and the engagement when the rotation operation shaft is rotated from the valve-closing position to the valve-opening direction. It engages with the pin and moves in the axial direction in conjunction with the rotation of the rotary operation shaft in the valve opening direction, moves the valve rod against the urging force of the urging means, and opens the valve with respect to the rotary operation shaft. A gas stopper provided with a cam plunger that releases engagement with the engagement pin by removing the rotational force in the direction and moves the valve rod back by the urging force of the urging means. And a second urging means for urging the stopper toward the rotational operation shaft in the axial direction. When the engaging pin is engaged with the cam plunger, the engaging pin engages with the engaging claw to prohibit the stopper from moving toward the rotation shaft. When the engagement of the engagement pin with the cam plunger is released, an engagement groove is formed on the inner peripheral surface of the stopper by the second biasing means to allow the stopper to move toward the rotation shaft. A stopper is provided on an outer peripheral surface of the stopper, and a stopper is provided at an ignition position set in the middle of the rotation when the rotation operation shaft is rotated from the valve closing position to the valve opening direction on the inner surface of the case body surrounding the stopper. The first abutting portion that does not abut against the stopper claw and the stopper portion rotate when the stopper is moved to the rotating operation shaft side, while the stopper abuts on the claw to restrict further rotation of the rotating operation shaft. Rotating the operating shaft while moving to the operating shaft side Gas cock, characterized in that the formation of the second abutting portions defining the end position.