CN204088099U - Switch in electric tool - Google Patents
Switch in electric tool Download PDFInfo
- Publication number
- CN204088099U CN204088099U CN201420531641.5U CN201420531641U CN204088099U CN 204088099 U CN204088099 U CN 204088099U CN 201420531641 U CN201420531641 U CN 201420531641U CN 204088099 U CN204088099 U CN 204088099U
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- China
- Prior art keywords
- movable contact
- spring
- contact spring
- terminal
- commutation
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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 - Lifetime
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 35
- 230000000994 depressogenic effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 230000007935 neutral effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Push-Button Switches (AREA)
Abstract
The utility model discloses that a kind of pivoting friction that commutates is little, switch in the electric tool flexibly of commutating, comprise the bottom base, middle pedestal, top base and the commutation pedestal that are connected successively from bottom to top, rotate in commutation pedestal and be provided with rotating shaft, in described rotating shaft, radial direction is provided with through hole, spring is provided with in through hole, the two ends of spring are respectively arranged with ball, and ball offsets with commutation pedestal.Its advantage is: rotate in commutation pedestal and be provided with rotating shaft, in rotating shaft, radial direction is provided with through hole, spring is provided with in through hole, the two ends of spring are respectively arranged with ball, ball offsets with commutation pedestal, the flexibility of commutation greatly can be improved after adopting this structure, thus commutation overlong service life, function-stable.
Description
Technical field
The utility model relates to the switch in a kind of electric tool.
Background technology
In view of the switch in conventional electric tool, comprise housing, rotate in housing and be provided with rotating shaft, on the outer wall of rotating shaft along the circumferential direction on be provided with circle location notch or a positioning convex, two locating stop pieces being provided with the positioning rib that snaps in location notch in rotating shaft in housing or being clamped by positioning convex, housing are provided with the reversing bar that drive shaft is rotated, the switch of this structure, because rotating shaft is with being plane-plane contact during housing into rotation, therefore frictional force is comparatively large, rotates dumb.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of commutation pivoting friction little, the switch in the electric tool flexibly of commutating.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the switch in a kind of electric tool, comprise the bottom base, middle pedestal, top base and the commutation pedestal that are connected successively from bottom to top, rotate in commutation pedestal and be provided with rotating shaft, in described rotating shaft, radial direction is provided with through hole, be provided with spring in through hole, the two ends of spring are respectively arranged with ball, and ball offsets with commutation pedestal.
Be provided with in described commutation pedestal and rotating and six pits that phase inversion is not corresponding, wherein two pits correspondence rotates forward, the reversion of two pit correspondences, and two pit correspondences do not turn, rotating shaft go to corresponding rotating forward, reversion or nonrotation put time, two balls are arranged in two wherein corresponding pits.
Be provided with commutation board above described commutation pedestal, commutation board is fixedly connected with rotating shaft, and on the upper surface of commutation board, eccentric setting has driving lever.
Slide between described top base and middle pedestal and be provided with push rod, the lower surface of top base is provided with guide vane end stop, and one end of push rod is connected by main spring with between guide vane end stop, and the other end of push rod is provided with button.
Described push rod is provided with counterbore, slide bar is provided with in counterbore, one end of slide bar is connected by little spring with between counterbore base, middle pedestal is provided with power supply terminal, top base is hinged with the V-arrangement movable contact spring matched with power supply terminal, the corner of V-arrangement movable contact spring is hinged on top base, and the other end and the movable contact spring of slide bar offset, and one end of movable contact spring contacts with power supply terminal when being depressed.
The angle on described V-arrangement movable contact spring both sides is between 160 ° ~ 175 °.
Described movable contact spring is positioned at that face contacted with slide bar and is provided with convex closure, slide bar can contact with convex closure when relative sliding on movable contact spring, convex closure is positioned at the side at movable contact spring turning and that end contacted with power supply terminal near movable contact spring, meet push rod when reset simultaneously, slide bar is in the moment slipping over convex closure, and movable contact spring one end departs from power supply terminal at once.
Described push rod is arranged with auxiliary spring and brake block, one end of auxiliary spring is connected with push rod, the other end is connected with the side of brake block, top base is provided with two pairs of terminals, wherein the line of one end of pair of terminal is vertical with the line of one end of another pair of terminal, and the end of each this end of terminal is equal to the distance of intersection point, rotating shaft is provided with the two parallel commutator segments for switching two pairs of terminal break-makes, wherein the other end of pair of terminal extends to the opposite side of brake block respectively and offsets with brake block simultaneously.
The beneficial effects of the utility model are: rotate in commutation pedestal and be provided with rotating shaft, in rotating shaft, radial direction is provided with through hole, spring is provided with in through hole, the two ends of spring are respectively arranged with ball, ball offsets with commutation pedestal, the flexibility of commutation greatly can be improved after adopting this structure, thus commutation overlong service life, function-stable.
Accompanying drawing explanation
Fig. 1 is the exploded view of the switch in the utility model electric tool;
Structure chart when Fig. 2 is the utility model electric tool access failure;
Fig. 3 is the structure chart of Fig. 2 when just connecting;
Fig. 4 is structure chart when button is pressed on earth in Fig. 2;
Fig. 5 is that Fig. 1 commutates the connection layout of pedestal and rotating shaft;
Fig. 6 is the structure chart of movable contact spring in Fig. 1;
Fig. 7 is local structural graph in Fig. 1;
Fig. 8 is the graph of a relation of brake block and terminal in Fig. 1.
In figure: 1, bottom base, 2, middle pedestal, 3, top base, 4, commutation pedestal, 5, rotating shaft, 6, through hole, 7, spring, 8, ball, 9, rotate forward pit, 10, reversion pit, 11, neutral gear pit, 12, commutation board, 13, driving lever, 14, push rod, 15, guide vane end stop, 16, main spring, 17, button, 18, counterbore, 19, slide bar, 20, little spring, 21, power supply terminal, 22, movable contact spring, 23, convex closure, 24, auxiliary spring, 25, brake block, 26, the first terminal, 27, second terminal, 28, 3rd terminal, 29, 4th terminal, 30, first commutator segment, 31, second commutator segment.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, switch in electric tool described in the utility model, comprise the bottom base 1, middle pedestal 2, top base 3 and the commutation pedestal 4 that are connected successively from bottom to top, rotate in commutation pedestal 4 and be provided with rotating shaft 5, in described rotating shaft 5, radial direction is provided with through hole 6, be provided with spring 7 in through hole 6, the two ends of spring 7 are respectively arranged with ball 8, and ball 8 offsets with commutation pedestal 4.
In order to rotating shaft 5 registration, stable when commutating, be provided with in described commutation pedestal 4 and rotating and six pits that phase inversion is not corresponding, wherein two pits correspondence rotates forward---rotate forward pit 9, two pit correspondences reversion---reversion pit 10, two pit correspondences do not turn, i.e. neutral gear---neutral gear pit 11, rotating shaft 5 go to corresponding rotating forward, reversion or nonrotation put time, two balls 8 are arranged in two wherein corresponding pits.Neutral gear pit 11 is between rotating forward pit 9 and reversion pit 10.
Be provided with commutation board 12 above described commutation pedestal 4, commutation board 12 is fixedly connected with rotating shaft 5, and on the upper surface of commutation board 12, eccentric setting has driving lever 13.
Slide between described top base 3 and middle pedestal 2 and be provided with push rod 14, the lower surface of top base 3 is provided with guide vane end stop 15, one end of push rod 14 is connected by main spring 16 with between guide vane end stop 15, the other end of push rod 14 is provided with button 17, when actual production, can be embedded in push rod 14 to save space main spring 16.
Described push rod 14 is provided with counterbore 18, slide bar 19 is provided with in counterbore 18, one end of slide bar 19 with bottom counterbore 18 between be connected by little spring 20, middle pedestal 2 is provided with power supply terminal 21, top base 3 is hinged with the V-arrangement movable contact spring 22 matched with power supply terminal 21, the corner of V-arrangement movable contact spring 22 is hinged on top base 3, and the other end and the movable contact spring 22 of slide bar 19 offset, and one end of movable contact spring 22 contacts with power supply terminal 21 when being depressed.
Stable in order to way circuit quick-make, the angle on described V-arrangement movable contact spring 22 both sides is between 160 ° ~ 175 °.
In order to when push-button reset, way circuit can disconnect fast, the way circuit when shaking is avoided to be communicated with suddenly, electric tool works, described movable contact spring 22 is positioned at that face contacted with slide bar 19 and is provided with convex closure 23, slide bar 19 can contact with convex closure 23 when relative sliding on movable contact spring 22, convex closure 23 is positioned at the side at movable contact spring 22 turning and that end contacted with power supply terminal 21 near movable contact spring 22, meet push rod 14 when reset simultaneously, slide bar 19 is slipping over the moment of convex closure 23, and movable contact spring 22 one end departs from power supply terminal 21 at once.
In order to prevent under fortuitous event, way circuit conducting, electric tool works, as shown in FIG. 7 and 8, described push rod 14 is arranged with auxiliary spring 24 and brake block 25, one end of auxiliary spring 24 is connected with push rod 14, the other end is connected with the side of brake block 25, top base 3 is provided with two pairs of terminals---the first terminal 26, second terminal 27, 3rd terminal 28, 4th terminal 29, wherein the first terminal 26 is vertical with the line of one end of the 4th terminal 29 with the second terminal 27 with the line of one end of the 3rd terminal 28, and the first terminal 26, second terminal 27, 3rd terminal 28, the end of the 4th this end of terminal 29 is equal to the distance of intersection point, rotating shaft 5 is provided with the two parallel commutator segments for switching two pairs of terminal break-makes---the first commutator segment 30 and the second commutator segment 31, wherein the other end of pair of terminal extends to the opposite side of brake block 25 respectively and offsets with brake block 25 simultaneously.Namely the other end of the first terminal 26 and the 3rd terminal 28 extends to the opposite side of brake block 25 and offset with brake block 25 (what adopt in the present embodiment is this structure) respectively simultaneously; Or the other end of the second terminal 27 and the 4th terminal 29 extends to the opposite side of brake block 25 respectively and offsets with brake block 25 simultaneously
Operation principle of the present utility model is: as shown in Figure 2, and now described switch is in non-operating state, and brake block 25 offsets with the first terminal 26 and the 3rd terminal 28 under the effect of auxiliary spring 24, i.e. the first terminal 26 and the 3rd terminal 28 conducting.Button press 17, push rod 14 is moved to the left thereupon, and brake block 25 departs from the first terminal 26 and the 3rd terminal 28 under the effect of auxiliary spring 24, and the first terminal 26 and the 3rd terminal 28 are in normal condition.Slide bar 19 is at the surface sliding of movable contact spring 22, when slide bar 19 slips over movable contact spring 22 corner, movable contact spring 22 rotates around pin joint under the effect of little spring 20 and slide bar 19, one end of movable contact spring 22 contacts with power supply terminal 21 at once, switching circuit conducting, switch can work, following slide bar 19 continues the surface sliding that against movable contact spring 22, movable contact spring 22 contacts with power supply terminal 21 all the time, switch keeps conducting state, if regulate turning to of electric tool, as long as so rotating lever 13, rotating shaft 5 is rotated, ball 8 proceeds to corresponding rotating forward pit 9 thereupon, in reversion pit 10, the first corresponding commutator segment 30 is communicated with the first terminal 26 and the 4th terminal 29, second commutator segment 31 is communicated with the second terminal 27 and the 3rd terminal 28, or the first commutator segment 30 is communicated with the first terminal 26 and the second terminal 27, second commutator segment 31 is communicated with the 3rd terminal 28 and the 4th terminal 29.When described switch closed by needs time, come up button 17, push rod 14 resets under the effect of main spring 16, in the process resetted, when slide bar 19 is when sliding on movable contact spring 22 convex closure 23, because convex closure 23 exceeds movable contact spring 22 surface, therefore when slide bar 19 is on convex closure 23, slide bar 19 pairs of movable contact springs 22 have the effect of individual weight, when slide bar 19 slips over convex closure 23 time, the surface contact of slide bar 19 and movable contact spring 22, be equivalent to slide bar 19 and have a displacement of moment, namely movable contact spring 22 has the short distance resilience of moment, and now one end moment of movable contact spring 22 departs from power supply terminal 21, that is certain distance is produced instantaneously between one end of movable contact spring 22 and power supply terminal 21, now, if electric tool produces microvibration, movable contact spring 22 also can not contact with power supply terminal 21, avoid original movable contact spring 22 when slowly departing from power supply terminal 21, once there be small vibrations, power supply terminal 21 and movable contact spring 22 can connect circuit again situation because of vibrations occurs, situation about being again energized after namely avoiding power-off occurs, thus ensure electric tool shut down after can not again task situation occur, avoid the operating accident of electric tool.Then slide bar 19 continues to slide on movable contact spring 22, when slipping over movable contact spring 22 turning, to another section effect of movable contact spring 22, make movable contact spring 22 rotate around pin joint and reset, strengthen the disengaging distance of movable contact spring 22 and power supply terminal 21, when button 17 resets completely, brake block 25 offsets with the first terminal 26 and the 3rd terminal 28 again, commutating circuit short circuit, motor quits work thereupon immediately, thus reaches the object of brake.
Claims (8)
1. the switch in electric tool, comprise the bottom base, middle pedestal, top base and the commutation pedestal that are connected successively from bottom to top, rotate in commutation pedestal and be provided with rotating shaft, it is characterized in that: in described rotating shaft, radial direction is provided with through hole, spring is provided with in through hole, the two ends of spring are respectively arranged with ball, and ball offsets with commutation pedestal.
2. the switch in electric tool according to claim 1, it is characterized in that: be provided with in described commutation pedestal and rotating and six pits that phase inversion is not corresponding, wherein two pits correspondence rotates forward, the reversion of two pit correspondences, two pit correspondences do not turn, rotating shaft go to corresponding rotating forward, reversion or nonrotation put time, two balls are arranged in two wherein corresponding pits.
3. the switch in electric tool according to claim 2, is characterized in that: be provided with commutation board above described commutation pedestal, commutation board is fixedly connected with rotating shaft, and on the upper surface of commutation board, eccentric setting has driving lever.
4. the switch in electric tool according to claim 2, it is characterized in that: sliding between described top base and middle pedestal is provided with push rod, the lower surface of top base is provided with guide vane end stop, and one end of push rod is connected by main spring with between guide vane end stop, and the other end of push rod is provided with button.
5. the switch in electric tool according to claim 4, it is characterized in that: described push rod is provided with counterbore, slide bar is provided with in counterbore, one end of slide bar is connected by little spring with between counterbore base, middle pedestal is provided with power supply terminal, top base is hinged with the V-arrangement movable contact spring matched with power supply terminal, the corner of V-arrangement movable contact spring is hinged on top base, the other end and the movable contact spring of slide bar offset, and one end of movable contact spring contacts with power supply terminal when being depressed.
6. the switch in electric tool according to claim 5, is characterized in that: the angle on described V-arrangement movable contact spring both sides is between 160 ° ~ 175 °.
7. the switch in electric tool according to claim 6, it is characterized in that: described movable contact spring is positioned at that face contacted with slide bar and is provided with convex closure, slide bar can contact with convex closure when relative sliding on movable contact spring, convex closure is positioned at the side at movable contact spring turning and that end contacted with power supply terminal near movable contact spring, meet push rod when reset simultaneously, slide bar is in the moment slipping over convex closure, and movable contact spring one end departs from power supply terminal at once.
8. the switch in electric tool according to claim 4, it is characterized in that: described push rod is arranged with auxiliary spring and brake block, one end of auxiliary spring is connected with push rod, the other end is connected with the side of brake block, top base is provided with two pairs of terminals, wherein the line of one end of pair of terminal is vertical with the line of one end of another pair of terminal, and the end of each this end of terminal is equal to the distance of intersection point, rotating shaft is provided with the two parallel commutator segments for switching two pairs of terminal break-makes, wherein the other end of pair of terminal extends to the opposite side of brake block respectively and offsets with brake block simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531641.5U CN204088099U (en) | 2014-09-16 | 2014-09-16 | Switch in electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531641.5U CN204088099U (en) | 2014-09-16 | 2014-09-16 | Switch in electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204088099U true CN204088099U (en) | 2015-01-07 |
Family
ID=52180781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420531641.5U Expired - Lifetime CN204088099U (en) | 2014-09-16 | 2014-09-16 | Switch in electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204088099U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282456A (en) * | 2014-09-16 | 2015-01-14 | 张家港华捷电子有限公司 | Switch in electric tool |
| CN105489413A (en) * | 2015-12-04 | 2016-04-13 | 张家港华捷电子有限公司 | Shockproof direct current switch of motor |
| CN106078626A (en) * | 2016-08-17 | 2016-11-09 | 张家港市创基机械设备制造有限公司 | Battery bag rotating mechanism in hand held electric tool |
| CN110911181A (en) * | 2019-12-03 | 2020-03-24 | 苏州华之杰电讯股份有限公司 | Movable contact group module applied to electric tool switch |
-
2014
- 2014-09-16 CN CN201420531641.5U patent/CN204088099U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282456A (en) * | 2014-09-16 | 2015-01-14 | 张家港华捷电子有限公司 | Switch in electric tool |
| CN105489413A (en) * | 2015-12-04 | 2016-04-13 | 张家港华捷电子有限公司 | Shockproof direct current switch of motor |
| CN106078626A (en) * | 2016-08-17 | 2016-11-09 | 张家港市创基机械设备制造有限公司 | Battery bag rotating mechanism in hand held electric tool |
| CN110911181A (en) * | 2019-12-03 | 2020-03-24 | 苏州华之杰电讯股份有限公司 | Movable contact group module applied to electric tool switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150107 |