CN203325618U - Speed adjustment switch - Google Patents
Speed adjustment switch Download PDFInfo
- Publication number
- CN203325618U CN203325618U CN2013202757642U CN201320275764U CN203325618U CN 203325618 U CN203325618 U CN 203325618U CN 2013202757642 U CN2013202757642 U CN 2013202757642U CN 201320275764 U CN201320275764 U CN 201320275764U CN 203325618 U CN203325618 U CN 203325618U
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- resistance
- speed adjustment
- speed
- resistor
- adjusting plate
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Abstract
The utility model relates to a speed adjustment switch and mainly solves the problem that the service life of an existing speed adjustment switch is affected due to the shortcoming that a surface material of a resistor is easy to abrade. A polished sheet (5) made of a mirror surface glass material is arranged on a speed adjustment plate (4) of the speed adjustment switch; a first resistor (2) is connected with a second resistor (3) through the polished sheet (5); the polished sheet (5) can do linear reciprocating motion along the first resistor (2) and the second resistor (3) through the speed adjustment plate (4). The speed adjustment plate of the speed adjustment switch is made of a material with an extremely small friction coefficient, so that the friction of the speed adjustment switch can be reduced to the maximum extent; during adjustment, the phenomenon that the usability of a product is affected because the speed adjustment plate and the surfaces of the resistors are abraded caused by friction is effectively avoided, so that the service life of the product is effectively prolonged.
Description
Technical field
The utility model relates to a kind of switch, refers in particular to the speed-regulating switch on a kind of electric tool.
Background technology
Electric tool be a kind of by motor or electromagnet, be power, by transmission mechanism, drive working head to carry out the hand-hold type of operation or movable mechanized tool.The characteristics such as that electric tool has is easy to carry, simple to operate, diverse in function, can greatly reduce labor intensity, increase work efficiency, realize mechanization of manual operations, thereby be widely used in the fields such as building, house decoration, automobile, machinery, electric power, bridge, gardening, and enter in a large number family.
The inside of electric tool is equipped with speed-regulating switch, and the degree of fastening button realizes that the resistance on speed-regulating switch is regulated, and changes the size of electric current, thereby the power output of change motor is to realize the speed governing effect.At present, the speed-regulating switch of electric tool adopts the metal-rubber sheet to realize the adjusting to resistance, due to sheet rubber in slipping, easily from wearing and tearing and wearing and tearing bottom resistance, while causing using for a long time, resistance changes, and can not reach instructions for use, cause reduce the useful life of product, increase cost.
Summary of the invention
For the shortcoming and the weak point that overcome background technology, the utility model provides a kind of speed-regulating switch, solves existing speed-regulating switch and has the shortcoming of abrasion resistence, thereby affect the problem in useful life.
The technical solution of the utility model is: a kind of speed-regulating switch, comprise wiring board, the first resistance, the second resistance and speed adjusting plate, described the first resistance and the second resistance are painted on wiring board, and be provided with interval and be parallel distribution between described the first resistance and the second resistance, the head of described speed adjusting plate is the mating plate that conducting glass material that coefficient of friction is little is made, between described the first resistance and the second resistance, by described mating plate, be connected, and described wear plate can be along the first resistance and the second resistance straight reciprocating motion by described speed adjusting plate.
Described the first resistance and the second resistance are Chip-R or fixed carbon resister.
Described speed adjusting plate is board-type.
Described speed adjusting plate is made by glass material.
Described wiring board is made by resin material.
The utlity model has following beneficial effect: because the speed adjusting plate of this speed-regulating switch has adopted the little material of coefficient of friction to make; therefore; can protect to the full extent the one the second resistance; when regulating; effectively avoid being worn fast because friction causes resistance; thereby affect the serviceability of product, effectively extended the useful life of product.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model embodiment mono-.
The structural representation that Fig. 2 is the utility model embodiment bis-.
In figure, wiring board 1, the first resistance 2, the second resistance 3, speed adjusting plate 4, mating plate 5.
Embodiment
Below for accompanying drawing, embodiment of the present utility model is described further:
By Fig. 1, shown in Fig. 2, a kind of speed-regulating switch, comprise wiring board 1, the first resistance 2, the second resistance 3 and speed adjusting plate 4, described wiring board 1 is made by resin material, described the first resistance 2 and the second resistance 3 are painted on wiring board 1, and be provided with interval and be parallel distribution between described the first resistance 2 and the second resistance 3, described speed adjusting plate 4 is provided with the mating plate 5 that conducting glass material is made, between described the first resistance 2 and the second resistance 3, by described mating plate 5, be connected, and described mating plate 5 can be along the first resistance 2 and the second resistance 3 straight reciprocating motions by described speed adjusting plate 4.According to such scheme, because the speed adjusting plate of this speed-regulating switch has adopted the material that coefficient of friction is little to make, therefore, can reduce to the full extent its frictional force, when regulating, effectively avoid being worn fast because friction causes speed adjusting plate and resistive surface, thereby affect the serviceability of product, effectively extended the useful life of product.
In the utility model, described the first resistance 2 and the second resistance 3 are Chip-R or fixed carbon resister.As shown in Figure 1, described the first resistance 2 and the second resistance 3 are fixed carbon resister, and shown in Fig. 2, described the first resistance 2 and the second resistance 3 are Chip-R, Chip-R comprises the tie point that a plurality of resistances are different, by the slip speed adjusting plate, to connect certain tie point, realizes regulating.
In the utility model, described speed adjusting plate 4 is board-type.The employing conducting glass material is made.Because speed adjusting plate is the little material of coefficient of friction, in unassembled situation, speed adjusting plate is the vertical bar type, saves material, reduces costs.In the time of after assembling, by button, press speed adjusting plate 4 to make its distortion, as shown in Fig. 1, just then can realize sliding, realize the purpose of speed governing, adopt full glass to make, make its sliding capability good, and improve operating characteristics.
Embodiment should not be considered as the restriction to utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection range of the present utility model.
Claims (5)
1. a speed-regulating switch, comprise wiring board (1), the first resistance (2), the second resistance (3) and speed adjusting plate (4), described the first resistance (2) and the second resistance (3) are painted on wiring board (1), and be provided with interval and be parallel distribution between described the first resistance (2) and the second resistance (3), it is characterized in that: described speed adjusting plate (4) is provided with the mating plate (5) that conducting glass material is made, between described the first resistance (2) and the second resistance (3), by described mating plate (5), be connected, and described mating plate (5) can be along the first resistance (2) and the second resistance (3) straight reciprocating motion by described speed adjusting plate (4).
2. according to the described speed-regulating switch of claim 1, it is characterized in that described the first resistance (2) and the second resistance (3) are post-chip resistance or fixed carbon resister.
3. according to the described speed-regulating switch of claim 1 or 2, it is characterized in that described speed adjusting plate (4) is for board-type.
4. according to the described speed-regulating switch of claim 1 or 2, it is characterized in that described speed adjusting plate (4) made by glass material.
5. according to the described speed-regulating switch of claim 1 or 2, it is characterized in that described wiring board (1) made by resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202757642U CN203325618U (en) | 2013-05-21 | 2013-05-21 | Speed adjustment switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202757642U CN203325618U (en) | 2013-05-21 | 2013-05-21 | Speed adjustment switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203325618U true CN203325618U (en) | 2013-12-04 |
Family
ID=49664932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202757642U Expired - Fee Related CN203325618U (en) | 2013-05-21 | 2013-05-21 | Speed adjustment switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203325618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183343A (en) * | 2014-07-15 | 2014-12-03 | 常州大学 | Current sampling resistor and regulation method of same of large-current driving motor |
-
2013
- 2013-05-21 CN CN2013202757642U patent/CN203325618U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183343A (en) * | 2014-07-15 | 2014-12-03 | 常州大学 | Current sampling resistor and regulation method of same of large-current driving motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140521 |