Speed-control switch of double-material speed changing plate
A speed-regulating switch and speed-changing board technology, applied in the direction of electrical components, etc., can solve the problems of non-wear resistance, large changes in resistance capacity of resistance bands, and easy displacement of components, and achieve the effect of simple structure
Inactive Publication Date: 2017-10-13
浙江风速电子有限公司
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Problems solved by technology
[0002] The existing speed control switch only has the function of forward speed change. In actual work, when the reverse operation is required, it can only be forced backward (or outward) by manpower. There are two options for the control board material of the speed change. They are control boards made of pure ceramic materials and control boards made of pure PCB materials. Ceramic boards are fragile during production and transportation, and the temperature rises too fast and too high, which will cause the components on the board to be easily displaced or the resistance and capacity to be easily changed. ;If the PCB board is in the form of resistance strips, the resistance capacity of the resistance strips will change greatly during the production process by external heating. And no matter whether resistance band or resistance strip is used, it is not wear-resistant
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[0019] as attached Figures 1 to 6 As shown, the present invention provides a speed regulating switch of a double-material speed change plate, which is characterized in that it includes a reversing switch 7, a plastic block 10, a fine-tuning knob 13, a handle 14, a speed change control board 15 and a speed regulating switch main body 19. A reversing switch 7 is installed on the speed switch main body 19, and the intermediate position of reversing switch 7 is provided with a reversing switch projection 8, and a plastic block 10 is installed on the speed regulating switch main body 19 of handle 14 lower ends, and plastic block 10 one ends are connected with reversing. Cooperate with the switch 7, the upward side of the plastic block 10 cooperates with the handle 14, a fine-tuning knob 13 is installed at one end of the handle 14, the main body of the speed control switch 19 is composed of the base plate 1 and the resistance strip 2, and the components on the main body of the speed...
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The invention provides a speed-control switch of a double-material speed changing plate. A speed-control switch body is provided with a two-direction switch; a two-direction switch bump is arranged at the middle position of the two-dimension switch; a plastic block is arranged at the speed-control switch body which is located at the lower end of a handle; one end of the plastic block matches with the two-dimension switch; the upper surface of the plastic block matches the handle; a fine tuning knob is arranged at one end of the handle; the speed-control switch body is composed of a base plate and a resistance strip; the devices on the speed-control switch body are arranged on the base plate; and a hollow part is formed in the base plate. The speed-control switch of the double-material speed changing plate is simple in structure; the two-direction switch and a limiting device are additionally arranged on the speed-control switch body, so that the fine tuning and limited-positioning can be done for the reverse and positive work; by combining the base plate made of a PCB with the resistance strip made of ceramic, the disadvantage of single use of the original two speed change control plates is solved.
Description
technical field [0001] The invention belongs to the technical field of speed-regulating switches, in particular to a speed-regulating switch of a double-material speed-changing plate. Background technique [0002] The existing speed control switch only has the function of forward speed change. In actual work, when the reverse operation is required, it can only be forced backward (or outward) by manpower. There are two options for the control board material of the speed change. They are control boards of pure ceramic materials and control boards of pure PCB materials. Ceramic boards are fragile during production and transportation, and the temperature rises too fast and too high, which will cause the components on the board to be easily displaced or the resistance and capacity to be easily changed. ;If the PCB board is in the form of resistance strips, the resistance capacity of the resistance strips will change greatly during the production process by external heating. If th...
Claims
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IPC IPC(8): H01H21/02H01H21/22
CPCH01H21/02H01H21/22
Inventor 任胜丰干方良
Owner 浙江风速电子有限公司