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
To burn the gas rapidly, the gas stove usually is provided with a micro-switch electrically connected to the ignition device and a plate on the axle of the knob. The micro-switch is activated when the knob is turned to make sure the ignition device burning gas. It improves the conventional stove having to start the ignition device several times for burning gas.
The gas stove with the micro-switch further is provided with a frame outside the stove to install the micro-switch, such that the size of the stove is bigger. The designer is hard to change the structure of the stove.
The primary objective of the present invention is to provide an ignition switch of a gas stove, which is provided with the micro-switch but without having to increase the size of the stove.
According to the objective of the present invention, an ignition switch comprises a switch member, a closed device, a knob assembly, a terminal switch and a driving device. The switch member has an opening. The terminal switch has a conductive end inserted into the opening of the switch member. The driving device has a conductive portion and an insulating portion to touch the conductive end of the terminal switch. The driving device is turned by the knob assembly to select the conductive portion or the insulating portion to touch the conductive end of the terminal switch.
As shown in
The switch member 12 has an opening 22. The terminal switch 18 is outside of the switch member 12 with a conductive end 24 inserted into the opening 22.
A driving device 20 has a connecting member 16 and a post 28. The connecting member 16 has a conductive portion 30, which is a barrel element and is made of a conductive material, and an insulating portion 32, which is an elongated insulating material on the conductive portion 30. The post 28 is received in the conductive portion 30 and is pivoted on an end of a shaft 34 of the knob assembly 16. The post 28 is engaged with a slot 36 on the closed device 14 to fit the connecting member 26 to the closed device 14. As a result, turning the knob assembly 16 can move the closed device 14.
As shown in
The present invention provides the driving device 20 connecting the shaft 34 and the closed device 14 to driving the closed device 14 turning and to connect or disconnect the terminal switch 18 to control the ignition device. As a result, the ignition switch of the present invention can burn gas in one ignition, and furthermore, the driving device 20 and the closed device 14 are in a firm connection for simultaneous turning.
FIGS. 4 to 6 show an ignition switch 40 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 driving device 42 is fitted to the closed device 44 at an end thereof connecting to a knob assembly. The driving device 42 has a disk-like conductive portion 50 and an elongated insulating portion 52 on the conductive portion 50 along a radial direction. The ignition switch 40 of the second preferred embodiment has all the functions above.