CN207834138U - A kind of switch for electric tool - Google Patents
A kind of switch for electric tool Download PDFInfo
- Publication number
- CN207834138U CN207834138U CN201820308937.9U CN201820308937U CN207834138U CN 207834138 U CN207834138 U CN 207834138U CN 201820308937 U CN201820308937 U CN 201820308937U CN 207834138 U CN207834138 U CN 207834138U
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- CN
- China
- Prior art keywords
- sliding block
- switch
- circuit board
- electric tool
- brush
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of switch for electric tool, including shell, be set in the shell sliding block, with sliding block fastening and expose to the compression bar of the case top, the pressure cap for being set to the compression bar top, the circuit board being set on the left of the sliding block, the brush for being anchored on the sliding block and being slidably matched with the circuit board, the pull-fork assembly for adjusting current direction being set on rear side of the sliding block and be set to diode assembly on front side of sliding block for preventing alternating current from flowing back；The circuit board is connected by conducting wire with external loading.It with this structure design, by the setting of diode assembly, can effectively avoid generating spark in sliding block sliding process, and then the service life of effective lifting switch.
Description
Technical field
The utility model is related to motor switch technical field more particularly to a kind of switches for electric tool.
Background technology
The switch of electric tool is used under the prior art, most structure design is complex, in Speed Process of DC Motor,
It strikes sparks at switch contact because the variation of electric current easily causes, and then the service life of strong influence switch, and connects with motor
In termination process, due to the effect of magnetic coil in motor operation course, has part alternating current and flow back to and flow to switch, and then to switch
Performance cause large effect.
Utility model content
The purpose of this utility model is to provide a kind of compact-sized, the switches that alternating current can be effectively prevent to flow back.
For this purpose, the utility model uses following technical scheme：
A kind of switch for electric tool, including shell, be set in the shell sliding block, with the sliding block fasten
And expose to the compression bar of the case top, the pressure cap for being set to the compression bar top, the circuit being set on the left of the sliding block
Plate, the brush for being anchored on the sliding block and being slidably matched with the circuit board, be set on rear side of the sliding block for adjusting electricity
It flows the pull-fork assembly in direction and is set to the diode assembly on front side of sliding block for preventing alternating current from flowing back；The circuit board
It is connected with external loading by conducting wire.
Wherein, the pull-fork assembly includes brush carrier block, is set to the brush carrier block close to the circuit board one
The V-type elastic brush of side wall and drive rod for driving the brush carrier block to horizontally slip, the top of the drive rod
Expose to the shell.
Wherein, the diode assembly includes switch contact, and the diode being electrically connected with the switch contact,
The switch contact piece and the contact wipe for being set to the sliding block front side wall coordinate.
Wherein, the shell includes left shell, and the right shell body to fasten with the left shell.
Wherein, guide post is provided with below the sliding block, the periphery of the guide post is arranged with spring, the upper end of the spring
Inconsistent with the bottom surface of the sliding block, the lower end of the spring and the pedestal of the guide post lower end are inconsistent, the guide post with
The sliding block is slidably matched.
Wherein, the circuit board one side adjacent with the brush is provided with the conductive layer for adjusting current potential, described
Brush is slidably matched with the conductive layer.
The beneficial effects of the utility model：The utility model includes shell, is set in the shell sliding block, with it is described
Sliding block fastens and exposes to the compression bar of the case top, the pressure cap for being set to the compression bar top, is set to the sliding block left side
The circuit board of side is anchored on the sliding block and the brush being slidably matched with the circuit board, the use being set on rear side of the sliding block
In the pull-fork assembly for adjusting current direction and it is set to the diode assembly for being used to prevent alternating current from flowing back on front side of sliding block；Institute
Circuit board is stated by conducting wire to be connected with external loading.With this structure design, switch can be effectively prevent to be connect with driving motor
When, cause alternating current to be back to switch under the action of magnetic coil in motor operation course, and then effectively promote the switch
Performance.
Description of the drawings
Fig. 1 is a kind of front exploded view of switch for electric tool of the utility model.
Fig. 2 is a kind of reverse side exploded view of switch for electric tool of the utility model.
Fig. 3 is a kind of axonometric drawing for electric tool of the utility model.
Specific implementation mode
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
In conjunction with shown in Fig. 1 to Fig. 3, a kind of switch for electric tool in the present embodiment, including left shell 12 and institute
State right shell body 13 that left shell 12 fastens, the sliding block 2 that is set between left shell 12 and right shell body 13 in cavity, with the cunning
Block 2 fastens and exposes to the compression bar 3 of the case top, the pressure cap 4 for being set to 3 top of the compression bar, is set to the sliding block 2
The circuit board 5 in left side, the brush 11 (as shown in Figure 2) for being anchored on the sliding block 2 and being slidably matched with the circuit board 5, setting
In pull-fork assembly 6 of the rear side of the sliding block 2 for adjusting current direction and be set to sliding block 2 front side for the switch with
The diode assembly 7 that alternating current flows back after driving motor connection；The circuit board 5 is connected by conducting wire 8 with external loading.
Specifically, in the present embodiment, in conjunction with shown in Fig. 2, the pull-fork assembly 6 includes brush carrier block 61, is set to institute
Brush carrier block 61 is stated close to the V-type elastic brush 63 of 5 one side wall of the circuit board and for driving the brush carrier block
61 drive rods 62 to horizontally slip, the top of the drive rod 62 expose to the shell.With this structure design, drive can be passed through
The setting of lever 62 drives brush carrier block 61 to horizontally slip, and then changes the contact between V-type elastic brush 63 and circuit board
Position, changes current direction with this, changes direction of motor rotation with this.
Further, in conjunction with shown in Fig. 1 and Fig. 3, in the present embodiment, the diode assembly 7 includes switch contact 71,
And the diode 72 being electrically connected with the switch contact 71, the switch contact 71 be set to the sliding block 2 before
The contact wipe of side wall coordinates, and the lower section of the sliding block 2 is provided with guide post 81, and the periphery of the guide post 81 is arranged with spring 82,
The upper end of the spring 82 and the bottom surface of the sliding block 2 are inconsistent, the lower end of the spring 82 and 81 lower end of the guide post
Pedestal is inconsistent, and the guide post 81 is slidably matched with the sliding block 2, the circuit board 5 and the brush 11 (as shown in Figure 2) phase
Adjacent one side is provided with the conductive layer 51 for adjusting current potential, and the brush 11 is slidably matched with the conductive layer 51.
The switch designed using the above structure, by the sliding of sliding block 2, driving is set to the brush 11 and circuit of sliding block 2
It is slided between conductive layer 51 on plate 5, then adjusts output current size, meanwhile, by the setting of diode assembly, effectively keep away
Exempt to generate spark in sliding block sliding process at switch contact, and then the service life of effective lifting switch.It is sliding in the present embodiment
The contact of block front side wall is set as two, when electric current is smaller, first contacts the first contact, with the increase of electric current, with
Two contacts are in contact, and spark is generated during switch can be effectively prevent to be closed in this way, and then influence switch electrical property.
The technical principle of the utility model is described above in association with specific embodiment.These descriptions are intended merely to explain this reality
With novel principle, and it cannot be construed to the limitation to scope of protection of the utility model in any way.Based on the explanation herein,
Those skilled in the art would not require any inventive effort the other specific implementation modes that can associate the utility model,
These modes are fallen within the scope of protection of the utility model.
Claims (6)
1. a kind of switch for electric tool, it is characterised in that：Including shell, the sliding block being set in the shell and institute
It states sliding block fastening and exposes to the compression bar of the case top, the pressure cap for being set to the compression bar top, is set to the sliding block
The circuit board in left side, is set on rear side of the sliding block brush for being anchored on the sliding block and being slidably matched with the circuit board
Pull-fork assembly for adjusting current direction and it is set to diode assembly on front side of sliding block for preventing alternating current from flowing back；
The circuit board is connected by conducting wire with external loading.
2. a kind of switch for electric tool according to claim 1, it is characterised in that：The pull-fork assembly includes electricity
Brush fixed seat is set to the brush carrier block close to the V-type elastic brush of the circuit board one side wall and for driving
The drive rod that brush carrier block horizontally slips is stated, the top of the drive rod exposes to the shell.
3. a kind of switch for electric tool according to claim 2, it is characterised in that：The diode assembly includes
Switch contact, and the diode that is electrically connected with the switch contact, the switch contact and are set to the sliding block
The contact wipe of front side wall coordinates.
4. a kind of switch for electric tool according to claim 3, it is characterised in that：The shell includes left housing
Body, and the right shell body that fastens with the left shell.
5. a kind of switch for electric tool according to claim 4, it is characterised in that：The lower section of the sliding block is arranged
There are guide post, the periphery of the guide post to be arranged with spring, the upper end of the spring and the bottom surface of the sliding block are inconsistent, the bullet
The lower end of spring and the pedestal of the guide post lower end are inconsistent, and the guide post is slidably matched with the sliding block.
6. a kind of switch for electric tool according to claim 5, it is characterised in that：The circuit board and the electricity
It brushes adjacent one side and is provided with conductive layer for adjusting current potential, the brush is slidably matched with the conductive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820308937.9U CN207834138U (en) | 2018-03-06 | 2018-03-06 | A kind of switch for electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820308937.9U CN207834138U (en) | 2018-03-06 | 2018-03-06 | A kind of switch for electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207834138U true CN207834138U (en) | 2018-09-07 |
Family
ID=63398940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820308937.9U Active CN207834138U (en) | 2018-03-06 | 2018-03-06 | A kind of switch for electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207834138U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360751A (en) * | 2018-12-12 | 2019-02-19 | 艾佛森（深圳）科技有限公司 | A kind of speed-regulating switch and electric tool |
| CN109950078A (en) * | 2019-04-18 | 2019-06-28 | 杭州科明电子有限公司 | A kind of water-proof potentiometer button switch |
| CN112238423A (en) * | 2019-07-18 | 2021-01-19 | 德丰电创科技股份有限公司 | Control assembly for power tool |
-
2018
- 2018-03-06 CN CN201820308937.9U patent/CN207834138U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360751A (en) * | 2018-12-12 | 2019-02-19 | 艾佛森（深圳）科技有限公司 | A kind of speed-regulating switch and electric tool |
| CN109950078A (en) * | 2019-04-18 | 2019-06-28 | 杭州科明电子有限公司 | A kind of water-proof potentiometer button switch |
| CN112238423A (en) * | 2019-07-18 | 2021-01-19 | 德丰电创科技股份有限公司 | Control assembly for power tool |
| CN112238423B (en) * | 2019-07-18 | 2022-04-08 | 德丰电创科技股份有限公司 | Control assembly for power tool |
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