Ignition switch of gas stove

Abstract

An ignition switch has a switch member with a closed device therein, a knob and an electromagnetic valve a driving device. The knob is provided on the switch member for driving the closed device. The switch member further is provided with a chamber, in which a driving device is received. The driving device connects the knob and the electromagnetic valve, whereby the electromagnetic valve is activated while the knob is pressed.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to a gas stove and more particularly to an ignition switch of the gas stove.

2. Description of the Related Art

A conventional ignition switch mounted in a gas stove has a closed device and an electromagnetic valve. While user turns a knob of the stove, it drives a shaft of the closed device pushing a plug of the electromagnetic valve for gas flowing to a burner of the stove for burning. After that, a heater, which electrically connects the electromagnetic valve, generates current to activate the electromagnetic valve according to the heat of the burner.

In the conventional ignition switch, the electromagnetic valve is arranged next to the closed device, so that the ignition switch has a greater length. As a result, the stove has to provide sufficient length in height or in width to receive the ignition switch. In other words, the conventional ignition switch makes the stove large.

For an improved ignition switch, the electromagnetic valve is arranged perpendicular to the closed device to reduce the length thereof. Typically, there are two types of that. First, a coupler is provided to connect the shaft of the closed device and the plug of the electromagnetic valve. The plug of the electromagnetic valve is activated by the shaft of the closed device via the coupler while the knob is turned. The ignition switch has to change the orientation of the gas channel, so that the switch is totally different from the conventional switch and that increases the cost. Second, a transmission device is provided to connect the knob and the electromagnetic valve. The electromagnetic valve is activated by the knob via the transmission device. The transmission device is installed independently that might be easy to be impacted and damaged in assembly. There is no ignition switch in the present market without any drawback.

SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide an ignition switch of a gas stove, which the gas channel is kept as the conventional one and the transmission device will not be impacted and the length of the switch is decreased.

According to the objectives of the present invention, an ignition switch comprises a switch member, a knob, an electromagnetic valve and a driving device. The switch member has a closed device therein and a chamber in which the driving device is received. The knob is provided on the switch member for driving the closed device. The driving device connects the knob and the electromagnetic valve, whereby the electromagnetic valve is activated while the knob is pressed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of a first preferred embodiment of the present invention;

FIG. 2 is a rear view of the first preferred embodiment of the present invention;

FIG. 3 is top rear view of the first preferred embodiment of the present invention;

FIG. 4 is a sectional view along the 4-4 line of FIG. 3;

FIG. 5 is perspective view of the pushing member of the first preferred embodiment of the present invention;

FIG. 6 is a sectional view of the first preferred embodiment of the present invention, showing the motion of the driving device, and

FIG. 7 is a rear view of a second preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIG. 1 to FIG. 5, an ignition switch 10 of the first preferred embodiment of the present invention comprises a switch member 12, a closed device 13 in the switch member 12, a knob 14 at an end of the switch member 12 to drive the closed device 13, an electromagnetic valve 16 beside the switch member 12 and an ignition device 17. These elements are as same as the conventional one, so I'll not describe the detail. The characters of the present invention are described hereunder:

The switch member 12 has a base 22 and a cap 24. The base 22 has a gas inlet 221, a gas tube 222, a first gas tube 223, a second gas tube 224, a receiving tube 225 and a cone valve chamber 226. The base 22 further has a chamber 26, which has a first chamber 28 on a top thereof, a second chamber 30 communicated with the first chamber 28 and the receiving tube 225 and a order hole 31 communicated with the first chamber 28. The closed device 13 is mounted in the valve chamber 226, the electromagnetic valve 16 is mounted in the receiving tube 225 and the knob 14 is mounted on the cap 24.

The switch 10 of the present invention further comprises a driving device 18 mounted in the chamber 26, which has a driving member 32, a transmission member 34 and a pushing member 36.

The driving member 32 has a main member 40 on which a hole 42 is provided to fit a shaft 38 of the knob 13 and a pressing portion 44 projected from the main member 40.

The transmission member 34 has a beam 46 and an elastic device 48. The shaft 46 is inserted in the first chamber 28 having a post 50, a first block 52 at a bottom end of the post 50 and a second block 54 at a top end of the post 50 to be connected to the pressing portion 44. The elastic device 48 is a spring 48 fitted to the post 50 between the second block 54 and a pad plate 56 mounted in the order hole 31. An O-ring is mounted in the order hole 31 connected to a bottom thereof. The O-ring 58 is fitted to the post 50 to prevent gas from leakage out of the first chamber 28.

The pushing member 36 is received in the second chamber 30 having a barrel-like base portion 60, a pushing portion 62, a plug 161 on the base portion 60 to be connected to the electromagnetic valve 16, a positioning portion 64, which is a slot, and an inclined stop portion 66 in the positioning portion 64. The first block 52 of the beam 46 is connected to the stop portion 66 and is restricted by the positioning portion 64, so that the first block 52 is restricted between the stop portion 66 and the positioning portion 64.

As shown in FIG. 6, while the knob 14 is pressed, the shaft 38 is moved downward to drive the beam 46 of the transmission member 34 downward. In the meantime, the first block 52 of the beam 46 pushes the pushing member 36 to activate the electromagnetic valve 16 for gas flowing to a burner of the stove. While the knob 14 is moved back to its original position, the shaft 38 is moved upward and the elastic device 48 forces the beam 46 and the driving member 32 upward. As a result, the pushing member 36 is moved back to its original portion by the electromagnetic valve 16.

The ignition switch 10 of the present invention, under a circumstance of not changing the gas channel of the conventional ignition switch, provides the chamber 26 and the driving device 18 in the switch member 12 and beside the closed device 13 to control the electromagnetic valve 16. To compare with the conventional ignition switch as described above, the ignition switch 10 of the present invention has a shorter length, which helps the stove to decrease the size thereof and to use the space in the stove more flexible. In addition, the present invention has less components to prevent the transmission device form being impacted and damaged.

As shown in FIG. 7, an ignition switch 70 of the second preferred embodiment of the present invention, which is similar to the ignition switch 10 of the first preferred embodiment, except that a base 71 of the second preferred embodiment is different from the base 22 of the first preferred embodiment. The base 71 has a gas inlet 72 on a receiving tube 74. The ignition switch 70 of the second preferred embodiment works as same as the ignition switch 10 of the first preferred embodiment.

The scope of the ignition switch of the present invention should not restricted in the specification and the drawings. The present invention can be applied to any type of stove.

In conclusion, the ignition switch of the present invention still applies the conventional switch member and the electromagnetic valve under the circumstance of not changing the gas channel of the conventional ignition switch and has a shorter length, which helps the stove to decrease the size thereof and to use the space in the stove more flexible. In addition, the present invention prevents the transmission device form being impacted and damaged.

Claims

1. An ignition switch, comprising:

a switch member, in which a closed device and a chamber are provided;

a knob provided on the switch member for driving the closed device;

an electromagnetic valve, and

a driving device received in the chamber of the switch member to connect the knob and the electromagnetic valve, whereby the electromagnetic valve is activated while the knob is pressed.

2. The ignition switch as defined in claim 1, wherein the driving device has a driving member connected to a shaft of the knob, a transmission member movably mounted in the chamber of the switch member with an end thereof connected to the driving member and a pushing member mounted between the electromagnetic valve and the pushing member.

3. The ignition switch as defined in claim 1, wherein the switch member has a base and a cap secured to the base, the closed member is provided in the base, the electromagnetic valve on a side of the base, the knob is provided on the cap and the chamber communicated with the cap and the electromagnetic valve.

4. The ignition switch as defined in claim 3, wherein the chamber has a first chamber and a second chamber connected with each other and the second chamber is open at an end thereof and the transmission member is received in the first chamber and the pushing member is received in the second chamber.

5. The ignition switch as defined in claim 1, wherein the driving member has a main member fixed to a shaft of the knob, a pressing portion on a side of the main member to be connected to the transmission member.

6. The ignition switch as defined in claim 5, wherein the main member has a hole to be fitted to the shaft of the knob.

7. The ignition switch as defined in claim 5, wherein the pressing portion is projected outwardly from the main member.

8. The ignition switch as defined in claim 2, wherein the transmission member is moveable in the switch member and is exerted by a spring force.

9. The ignition switch as defined in claim 8, wherein the transmission member has a beam with an end thereof received in the chamber and an end thereof connected to the driving member, an elastic device mounted between the end the beam connected to the driving member and an interior wall of the switch member.

10. The ignition switch as defined in claim 9, wherein the beam has a post a first block on an end of the post to be connected to the pushing member and a second block on an end of the post to be connected to the driving member.

11. The ignition switch as defined in claim 10, wherein the pushing member has a base portion, a pushing portion on the base portion facing the electromagnetic valve and a stop portion on the base portion to be connected to the transmission member.

12. The ignition switch as defined in claim 10, wherein the switch member has an order hole communicated with the first chamber and an O-ring mounted in the order hole for leakproof.

13. The ignition switch as defined in claim 11, wherein the pushing member has a positioning portion at an end thereof facing the stop portion.