CN2800467Y - Switch of electric tool - Google Patents
Switch of electric tool Download PDFInfo
- Publication number
- CN2800467Y CN2800467Y CN 200520110205 CN200520110205U CN2800467Y CN 2800467 Y CN2800467 Y CN 2800467Y CN 200520110205 CN200520110205 CN 200520110205 CN 200520110205 U CN200520110205 U CN 200520110205U CN 2800467 Y CN2800467 Y CN 2800467Y
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- CN
- China
- Prior art keywords
- contact
- power supply
- switch
- electric tool
- supply terminal
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a switch of an electric tool, which comprises a shell, a manual control rod (3), a control circuit board, a switch contact, a terminal of a power supply, a switch output end, a positive and negative steering mechanism and a load power tube (22), wherein the switch contact, the terminal of a power supply, the switch output end, the positive and negative steering mechanism and the load power tube are connected with a control circuit. The utility model is characterized in that each component of the switch is all arranged on a same machine body, the control circuit board and the load power tube are arranged in the shell, the load power tube is sheathed in an insulating sealed cap (23) of the shell, a radiating fin (24) is arranged outside the insulating sealed cap, a metal fastener (25) is tightly connected with the radiating section of the load power tube through the radiating fin and the insulating sealed cap, a sliding sheet (4) of an adjustable resistance film is arranged on the manual control rod, the adjustable resistance film is used for regulating speed and is arranged on the control circuit board, the switch contact is a silver contact and has a teeterboard type structure, and a convex block (27) is arranged on the manual control rod. The utility model has the advantages of compact structure, small size, high power, convenient operation and long service life, and is easy to be matched with various electric tools.
Description
Technical field
The utility model belongs to a kind of control switch device, especially for the switching device on the electric tool.
Background technology
Common electric tool switch major function is the motor energized low rate start that makes electric tool earlier, by the alignment circuit speed-raising, motor is rotated at full speed then.Its primary structure comprises the mechanically actuated operation part, the control circuit part, rotating commutation part and driving load power tube, wherein the moving contact of the power on switch contact of the sliding contact of the speed-regulating potentiometer that is provided with in the control circuit and mechanical part, rotating commutation contact is connected with the manual control lever of mechanically actuated operation part respectively, respectively in order to forward and reverse commutation of connection, speed governing and the motor of controlling power supply.The mechanically actuated operation of conventional electric tool switch part, control circuit part, attaching plug and power tube are divided into three independent sectors more, connect with lead mutually, cause volume big, and structure is not compact, with supporting the uses inconvenience of electric tool such as electric drill.In addition, the switch contact in existing this class switch mostly is and advances friction contact or half contact pattern contact, exists the contact easy to wear, and working life is short, moves insecure deficiency.
Summary of the invention
The technical problems to be solved in the utility model provides the electric tool switch that a kind of compact conformation, volume are little, easy to use, the life-span is long.
The technical scheme that addresses the above problem is (referring to implementing illustration): the utility model comprises housing (9,23), manual control lever (3), control circuit board (21), the switch contact (11 that is connected with control circuit, 12,15,16), power supply terminal (19,20), output switching terminal (M+, M-), rotating changement (8,7) and bearing power pipe (22), it is characterized in that: each parts of this switch all are arranged on the same body: described control circuit board (21) and bearing power pipe (22) are contained in the insulating base (9) of housing, bearing power pipe (22) is covered with housing insulative cap (23), insulative cap is equipped with fin (24) outward, metal fastenings (25) passes fin, insulative cap and bearing power pipe heat radiation position are fastenedly connected, the slide (4) that is used for the adjustable resistance film (26) of speed governing on the control circuit board (21) is contained in manual control lever (3), described switch contact is a silver contact seesaw type structure, and manual control lever is provided with and acts on switch contact seesaw type moving contact (11 movingly, 12) projection (27).
Further scheme is: described power supply terminal (19,20), output switching terminal (M+, M-), rotating changement (8,7) all are arranged on the same housing.
Further scheme is again: described rotating changement structure is: be equipped with on the housing can about the reversing bar (8) stirred, commutator segment (7) is housed on the reversing bar, commutator segment commutates with output switching terminal (M+, M-) in being contained in insulating base and is connected.
The utility model is done all parts on same body, compact conformation, volume is little, easy to use, be easy to and the supporting use of various electric tools, its switch contact adopts silver contact seesaw type structure, has changed the traditional structure that advances CONTACT WITH FRICTION or the contact of half contact, it is big to have power, the advantage of long service life.Described bearing power pipe is contained in the insulating base, but the both heat radiations of guaranteed output pipe of its fin can be used as the cover plate of switch body again, have made full use of the useful space of switch, the overall volume of having dwindled switch.
Description of drawings
Fig. 1, the utility model embodiment disassembled form structural representation
Fig. 2, the utility model example structure schematic diagram
The A of Fig. 3, Fig. 2 is to structural representation
The C-C of Fig. 4, Fig. 2 is to structural representation
The B of Fig. 5, Fig. 2 is to structural representation
21 structural representations of control circuit board shown in Fig. 6, Fig. 1,4
The rearview of Fig. 7, Fig. 6
Fig. 8, the utility model embodiment manual control lever and switch contact interaction structural representation
The rearview of Fig. 9, Fig. 8
The manual control lever of Figure 10, Fig. 8 is pressed onto end status architecture schematic diagram
Figure 11, Fig. 2 commutate the B of parts 8,7 to structural representation
Figure 12, the structural representation when Figure 11 reversing bar 8 is pulled to the right
Figure 13, the structural representation when Figure 11 reversing bar 8 is pulled to the left
Figure 14, the utility model embodiment are located at the wiring structure of contact terminal schematic diagram on the same body
Figure 15, the utility model embodiment control circuit Fig. 1-handle 2-dust ring 3-manual control lever 4-slide 5-back-moving spring 6-brake member 7-commutator segment 8-reversing bar 9-insulator foot 10-Location resilient piece 11-leads directly to moving contact K
312-speed governing moving contact K
113-spring 15-speed governing fixed contact K
216-leads directly to fixed contact K
4The fast quick-recovery rectifying tube of 18-19-power supply terminal B+ 20-power supply terminal B-21-control circuit board 22-bearing power pipe V
323-plastic closure 24-fin 25-screw fastener 26-adjustable resistance film 27-projection 28-reference column
Embodiment
This routine housing is made up of insulator foot 9 and plastic closure 23, power supply terminal 19,20 is arranged on insulator foot 9 sidewalls of housing (referring to Fig. 2, Figure 14), two power supply terminals are pins type, directly inserting supply socket gets final product, needn't not establish external lead wire, compact conformation (power supply terminal that is arranged on the housing also can adopt plug-in type or welded structure).
The sub-M+ of the output switching terminal that is connected with load motor, M-also are arranged on (Figure 14) on the housing.
See Fig. 1, control circuit board 21 is arranged in the housing insulator foot 9, bearing power pipe 22 is welded on the interior control circuit board of housing, fin 24 is contained in outside the housing plastic closure 23, metal screw fastener 25 passes fin 24, plastic closure 23 is screwed into bearing power pipe 22 heat radiation positions (the D utmost point) and is fastenedly connected, to reach the effect of abundant heat radiation.
See this routine control circuit figure of Figure 15, form the square wave ON-OFF control circuit by integrated package GS069 and peripheral circuit, and be provided with the adjustable resistance film 26 that is used to adjust bearing power pipe V3 output duty cycle square wave, power supply terminal B-is on the one hand by speed governing contact K
1, K
2With control circuit bearing power pipe V
3Meet output switching terminal G2, on the other hand by straight-through contact K
3, K
4Meet output switching terminal G2, power supply terminal B+ directly meets another output switching terminal G1, and two output switching terminal G1, G2 meet the sub-M+ of output switching terminal, M-by commutator segment respectively.
The handle 1 of band stopper slot is equipped with in manual control lever 3 upper ends, and back-moving spring 5 is equipped with in the bottom, and the slide 4 of above-mentioned adjustable resistance film 26 is contained on the manual control lever 3; Projection 27 is housed on the manual control lever, act on the moving contact 12 (K1) of speed governing contact and the moving contact 11 (K3) of straight-through contact movingly respectively, described speed governing moving contact 12 and straight-through moving contact 11 are silver contact seesaw type structure, its middle part is electrically connected with power supply terminal 20 (B-), and be fulcrum with it, a side that is provided with silver contact is equipped with the spring 13 that it is pulled to speed governing fixed contact 15 and straight-through fixed contact 16 respectively, the projection 27 of opposite side elastic reaction on manual control lever.
The course of work of above-mentioned contact is: when manual control lever 3 was not depressed, the projection on it acted on speed governing moving contact 12 and straight-through moving contact 11, and all with corresponding fixed contact disconnection, the contact K5 closure of output switching terminal prevents that switch output misconnection is logical at this moment; When depressing manual control lever 3 first strokes downwards, insurance contact K5 disconnects, referring to Fig. 9, the projection 27 recessed edge that move downward act on speed governing moving contact 12 (K1), speed governing moving contact 12 under the effect of spring 13 with speed governing fixed contact 15 closures, connect control circuit, and make the output switching terminal energized, and continuing to depress manual control lever 3 downwards, the slide plate 4 on it slides on adjustable resistance film 26, progressively strengthen output voltage by the output duty cycle that increases, load motor speed is increased gradually; When manual control lever 3 by on earth the time, straight-through moving contact 11 is connected straight-through fixed contact 16 (see figure 10)s, makes the direct energized B+ of output switching terminal, B-, reaches full-speed operation, the handle stroke is the moving control of armrest.
This routine rotating changement structure is: housing insulating base 9 sidewalls be equipped with can about the reversing bar (8) stirred, reversing bar 8 lower ends act on metal Location resilient piece 10, but make reversing bar elasticity be positioned meta, position, a left side and right position, be equipped with on the reversing bar two respectively with output switching terminal G1, the commutator segment 7a that G2 is electrically connected, 7b, two commutator segments respectively with the output switching terminal M+ that is contained on the housing, the M-electrical connection that commutates, referring to Figure 11,12,13, reversing bar 8 is when meta, two commutator segments and output switching terminal M+, M-disconnects, no-output voltage, when reversing bar is pulled to the right the position (seeing Figure 12), commutator segment 7a, 7b respectively with output switching terminal M+, M-connects, when reversing bar is pulled left the position (referring to Figure 13), commutator segment 7a, 7b change direction respectively with output switching terminal M-, M+ connects; Described handle 1 is provided with the stopper slot of restriction reversing bar displacement, mustn't change electric current positive and negative electrode direction when moving with proof load.
Brake member 6 is housed on the manual control lever 3, and when handle did not have external force to apply, switch was in normal danger, and promptly brake member is connected (as the K5 among Figure 15) with static contact 19 and straight-through fixed contact 16, makes output motor or load end short circuit, is in the brake safety position.
This routine switch block all is arranged on the same body, compact conformation, volume is little, power is big, can be assigned in neatly on electronic switch and the electric tool and use, also can be used for using on the other products of controller, household electrical appliance and similar applications, the location is simple during use, operation is reliable, can realize high-power control, and has substituting strong, a advantage that matching is strong, as long as supporting corresponding handle, reversing bar input and output pin just can use on the electric tool of different products, different structure.
Claims (9)
1, a kind of electric tool switch, comprise housing (9,23), manual control lever (3), control circuit board (21), the switch contact (11 that is connected with control circuit, 12,15,16), power supply terminal (19,20), output switching terminal (M+, M-), rotating changement (8,7) and bearing power pipe (22), it is characterized in that: each parts of this switch all are arranged on the same body, described control circuit board (21) and bearing power pipe (22) are contained in the housing, bearing power pipe (22) is covered with housing insulative cap (23), insulative cap is equipped with fin (24) outward, metal fastenings (25) passes fin, insulative cap and bearing power pipe heat radiation position are fastenedly connected, the slide (4) that is used for the adjustable resistance film (26) of speed governing on the control circuit board (21) is contained in manual control lever (3), described switch contact is a silver contact seesaw type structure, and manual control lever is provided with and acts on switch contact seesaw type moving contact (11 movingly, 12) projection (27).
2, electric tool switch according to claim 1 is characterized in that: described power supply terminal (19,20), output switching terminal (M+, M-), rotating changement (8,7) all are arranged on the same housing.
3, electric tool switch according to claim 1 and 2, it is characterized in that: described rotating changement structure is: be equipped with on the housing can about the reversing bar (8) stirred, commutator segment (7) is housed on the reversing bar, and commutator segment output switching terminal (M+, the M-) commutation interior with being contained in insulating base is connected.
4, electric tool switch according to claim 1 and 2, it is characterized in that: the moving contact of the switch contact of described silver contact seesaw type structure (11,12) middle part is electrically connected with power supply terminal (20), and be fulcrum with the parts that are electrically connected with power supply terminal, a side that is provided with silver contact is equipped with the spring (13) that it is pulled to fixed contact (15,16), the projection (27) of opposite side elastic reaction on described manual control lever.
5, electric tool switch according to claim 3, it is characterized in that: the moving contact of the switch contact of described silver contact seesaw type structure (11,12) middle part is electrically connected with power supply terminal (20), and be fulcrum with the parts that are electrically connected with power supply terminal, a side that is provided with silver contact is equipped with the spring (13) that it is pulled to fixed contact (15,16), the projection (27) of opposite side elastic reaction on described manual control lever.
6, electric tool switch according to claim 1 and 2 is characterized in that: described power supply terminal (19,20) is pins type or plug-in type or welded structure.
7, electric tool switch according to claim 3 is characterized in that: described power supply terminal (19,20) is pins type or plug-in type or welded structure.
8, electric tool switch according to claim 4 is characterized in that: described power supply terminal (19,20) is pins type or plug-in type or welded structure.
9, electric tool switch according to claim 5 is characterized in that: described power supply terminal (19,20) is pins type or plug-in type or welded structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520110205 CN2800467Y (en) | 2005-06-16 | 2005-06-16 | Switch of electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520110205 CN2800467Y (en) | 2005-06-16 | 2005-06-16 | Switch of electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2800467Y true CN2800467Y (en) | 2006-07-26 |
Family
ID=36842960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520110205 Expired - Fee Related CN2800467Y (en) | 2005-06-16 | 2005-06-16 | Switch of electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2800467Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261907B (en) * | 2007-03-08 | 2010-11-10 | 松下电器产业株式会社 | Switch device |
| CN107248470A (en) * | 2017-07-20 | 2017-10-13 | 浙江风速电子有限公司 | A kind of speed-regulating switch of extra quality variable speed plate |
| WO2020142894A1 (en) * | 2019-01-08 | 2020-07-16 | 深圳拓邦股份有限公司 | Electronic device, pcb board, and power tool |
-
2005
- 2005-06-16 CN CN 200520110205 patent/CN2800467Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261907B (en) * | 2007-03-08 | 2010-11-10 | 松下电器产业株式会社 | Switch device |
| CN107248470A (en) * | 2017-07-20 | 2017-10-13 | 浙江风速电子有限公司 | A kind of speed-regulating switch of extra quality variable speed plate |
| WO2020142894A1 (en) * | 2019-01-08 | 2020-07-16 | 深圳拓邦股份有限公司 | Electronic device, pcb board, and power tool |
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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: 20060726 Termination date: 20120616 |