CN201338260Y - Single-chisel self-locking device of electric hammer - Google Patents
Single-chisel self-locking device of electric hammer Download PDFInfo
- Publication number
- CN201338260Y CN201338260Y CNU2008201703752U CN200820170375U CN201338260Y CN 201338260 Y CN201338260 Y CN 201338260Y CN U2008201703752 U CNU2008201703752 U CN U2008201703752U CN 200820170375 U CN200820170375 U CN 200820170375U CN 201338260 Y CN201338260 Y CN 201338260Y
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- Prior art keywords
- self
- differential
- locking device
- driven wheel
- keeper
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Abstract
The utility model relates to a single-chisel self-locking device of an electric hammer, which comprises a clamping component, a gear reducer, a cylinder sleeve and a driven bevel gear. The gear reducer is fixedly connected with the clamping component; the driven bevel gear matches with the cylinder sleeve; the gear reducer is provided with a shifting button which is used for adjusting the gears of an electric hammer; the inner peripheral surface of the clamping component is provided with a first groove; the inside of the clamping component is provided with a positioning mechanism; the positioning mechanism is fixedly arranged on the cylinder sleeve; the outer surface of the positioning mechanism is provided with a first convex tooth which matches with the first groove; the positioning mechanism is arranged on the cylinder sleeve; the terminal of the cylinder sleeve is provided with the driven bevel gear; the driven bevel gear is connected with the positioning mechanism in an insertion way; and the driven bevel gear is provided with a shifting groove which matches with the shifting button. The utility model can ensure that only the chiseling is performed without any rotation when the electric hammer is used for 'chiseling' the gear, and has the advantage of good self-locking performance.
Description
(1) technical field
The utility model relates to a kind of electric hammer, especially a kind ofly guarantees only to cut a hole when electric hammer uses " cutter " shelves the single self-locking device of cutting a hole that does not change.
(2) technical background
Electric hammer is by motor, gear reduction box, the crank connecting link beater mechanism, rotating drill rod mechanism, clutch, cylinder assembly, the tool-holder gripping member, overload protection arrangement, compositions such as power switch and power supply coupling assembling, gear reduction box is fixedlyed connected with the tool-holder gripping member, the rotating shaft both sides of motor are respectively equipped with a gear, rotatablely moving of motor by the gear of rotating shaft shaft gear engagement both sides, one of them gear driven one eccentric shaft moves reciprocatingly the displacer in the cylinder block through crank connecting rod beater mechanism in cylinder, variation by the air chamber volume, make another piston in the cylinder block reciprocating in same cylinder body, make cutter obtain impact energy; Another gear driven bevel-gear sett, driven wheel of differential wherein is connected with cylinder jacket by clutch, thereby makes cutter obtain torque.
Usually, electric hammer have cut a hole simultaneously and bore, single bore, three functions of single cutter.When selecting " cutter bores " shelves and " brill " shelves for use, clutch is in bonding state, and driven wheel of differential and drive bevel gear engagement make cutter obtain torque; When selecting " cutter " shelves for use, clutch is in released state, and driven wheel of differential separates with drive bevel gear, and cutter does not rotate.
But, existing electric hammer is when selecting " cutter " shelves for use, when cutter is subjected to external impacts, torque is passed to driven wheel of differential by cylinder jacket, and clutch lacks reliable location, and driven wheel of differential drives cylinder jacket and slowly rotates under the effect of frictional force, cause cutter to rotate, make and dig out the flat groove that the groove that comes is not a rule, fall flat.
(3) summary of the invention
For overcoming the above-mentioned defective of prior art, the utility model provides a kind of can be guaranteed that electric hammer is only cut a hole and not change the self-locking device that self-locking performance is good when " cutter " shelves.
Single cutter self-locking device in the electric hammer, comprise holder, with the fixedly connected gear reduction box of described holder, cylinder jacket, with the driven wheel of differential that described cylinder jacket cooperates, it is characterized in that:
The toggle of regulating the electric hammer gear is housed on the described gear reduction box;
The inner peripheral surface of described holder is provided with first groove, described holder inside is provided with detent mechanism, described detent mechanism is fixed on the cylinder jacket, the outer surface of described detent mechanism is provided with first double wedge with described first groove fit, described detent mechanism is installed on the described cylinder jacket, the end of described cylinder jacket is equipped with driven wheel of differential, described driven wheel of differential and described detent mechanism socket connection;
Described driven wheel of differential is provided with the allocating slot that cooperates with described toggle.
Further, described detent mechanism comprises the stop collar that is connected with described holder, described first double wedge is positioned at the periphery of described stop collar, the inner headed face of described stop collar is provided with second groove, described stop collar inside is provided with keeper, and the periphery of described keeper is provided with second double wedge with described second groove fit.
Further, described gear reduction box is provided with the spacing muscle that pushes against described keeper.
Further, on described keeper and the end face that described driven wheel of differential cooperates, slot is circumferentially arranged, the gear shaping that circumferentially cooperates on the end face of described driven wheel of differential with described slot.
Further, be provided with spring between described stop collar and the described keeper.
Further, described first, second groove is circumferential axial straight trough, and described first, second double wedge is circumferential axial straight-tooth.
Further, described allocating slot is a scrobicular ring.
Technical conceive of the present utility model is: push against described keeper with the spacing muscle on the gear reduction box, keeper is fixed in the described stop collar, second double wedge on the outer surface of keeper snaps in second groove of described stop collar, stop collar cooperates with first double wedge on the described holder by first double wedge on surface, make that the position of keeper is locked, and can't rotate; When the user uses " cutter " shelves of electric hammer, described toggle makes described driven wheel of differential reach, meshes with described keeper, driven wheel of differential and drive bevel gear break away from, no torque input, thereby the part that is positioned pins, to reach the purpose of locking cutter; Mounting spring between stop collar and keeper when the gear shaping of the slot of keeper end face and bevel gear end face does not mesh, because the effect of spring can make bevel gear slowly rotate, finally reaches engagement.
When the user uses " brill " shelves of electric hammer or " cutter bore " shelves, described toggle moves after making described driven wheel of differential, separates with described keeper, driven wheel of differential and drive bevel gear engagement are given cylinder jacket with transmission of torque, thereby make cutter obtain torque.
The utlity model has and to guarantee that electric hammer the time is only cut a hole at " cutter " shelves and do not change the advantage that self-locking performance is good.
(4) description of drawings
Fig. 1 is a schematic diagram of the present utility model
Fig. 2 is a decomposing schematic representation of the present utility model
Fig. 3 is the schematic diagram of holder
Fig. 4 is the schematic diagram of stop collar
Fig. 5 is the schematic diagram of keeper
Fig. 6 is the schematic diagram of driven wheel of differential
Fig. 7 is the schematic diagram of gear reduction box
(5) specific embodiment
In conjunction with the accompanying drawings, further specify the utility model:
Single cutter self-locking device in the electric hammer comprises holder 1, gear reduction box 2, the cylinder jacket 3 of fixedlying connected with described holder 1,
The toggle 5 of regulating the electric hammer gear is housed on the described gear reduction box 2;
The inner peripheral surface of described holder 1 is provided with first groove 11, described holder 1 inside is provided with detent mechanism, described detent mechanism is fixed on the cylinder jacket, the outer surface of described detent mechanism is provided with first double wedge 611 that cooperates with described first groove 11, described detent mechanism is installed on the described cylinder jacket 3, the end of described cylinder jacket 3 is equipped with driven wheel of differential 4, described driven wheel of differential 4 and described detent mechanism socket connection;
Described driven wheel of differential 4 is provided with the allocating slot 41 that cooperates with described toggle 5.
Described detent mechanism comprises the stop collar 61 that is connected with described holder 1, described first double wedge 611 is positioned at the periphery of described stop collar 61, the inner headed face of described stop collar 61 is provided with second groove 612, described stop collar 61 inside are provided with keeper 62, and the periphery of described keeper 62 is provided with second double wedge 621 that cooperates with described second groove 612.
Described gear reduction box 2 is provided with the spacing muscle 21 that pushes against described keeper 62.
On described keeper 62 and the end face that described driven wheel of differential 4 cooperates, slot 622 is circumferentially arranged, the gear shaping 42 that circumferentially cooperates on the end face of described driven wheel of differential 4 with described slot 622.
Be provided with spring 63 between described stop collar 61 and the described keeper 62.
Described first, second groove 11,612 is circumferential axial straight trough, and described first, second double wedge 611,621 is circumferential axial straight-tooth.
Described allocating slot 41 is a scrobicular ring.
Technical conceive of the present utility model is: push against described keeper 62 with the spacing muscle 21 on the gear reduction box 2, keeper 62 is fixed in the described stop collar 61, second double wedge 621 on the outer surface of keeper 62 snaps in second groove 612 of described stop collar 61, stop collar 61 cooperates with first double wedge 11 on the described holder 1 by first double wedge 611 on surface, make that the position of keeper 62 is locked, and can't rotate; When the user uses " cutter " shelves of electric hammer, described toggle 5 makes described driven wheel of differential 4 reaches, meshes with described keeper 62, driven wheel of differential 4 and drive bevel gear break away from, and the no torque input and the part 62 that is positioned pin, thereby reach the purpose of locking cutter; Mounting spring 63 between stop collar 61 and keeper 62 when the gear shaping 42 of the slot 622 of keeper 62 end faces and bevel gear 4 end faces does not mesh, because the effect of spring 63 can make bevel gear 4 slowly rotate, finally reaches engagement.
When the user uses " brill " shelves of electric hammer or " cutter bore " shelves, described toggle 5 moves after making described driven wheel of differential 4, separates with described keeper 62, driven wheel of differential 4 and drive bevel gear engagement are given cylinder jacket 3 with transmission of torque, thereby make cutter obtain torque.
The described content of this specification embodiment only is enumerating the way of realization of inventive concept; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (7)
1, the single cutter self-locking device in the electric hammer, comprise holder, with the fixedly connected gear reduction box of described holder, cylinder jacket, with the driven wheel of differential that described cylinder jacket cooperates, it is characterized in that:
The toggle of regulating the electric hammer gear is housed on the described gear reduction box;
The inner peripheral surface of described holder is provided with first groove, described holder inside is provided with detent mechanism, described detent mechanism is fixed on the cylinder jacket, the outer surface of described detent mechanism is provided with first double wedge with described first groove fit, described detent mechanism is installed on the described cylinder jacket, the end of described cylinder jacket is equipped with driven wheel of differential, described driven wheel of differential and described detent mechanism socket connection;
Described driven wheel of differential is provided with the allocating slot that cooperates with described toggle.
2, self-locking device as claimed in claim 1, it is characterized in that: described detent mechanism comprises the stop collar that is connected with described holder, described first double wedge is positioned at the periphery of described stop collar, the inner headed face of described stop collar is provided with second groove, described stop collar inside is provided with keeper, and the periphery of described keeper is provided with second double wedge with described second groove fit.
3, self-locking device as claimed in claim 2 is characterized in that: described gear reduction box is provided with the spacing muscle that pushes against described keeper.
4, self-locking device as claimed in claim 3 is characterized in that: on described keeper and the end face that described driven wheel of differential cooperates, slot is circumferentially arranged, the gear shaping that circumferentially cooperates with described slot on the end face of described driven wheel of differential.
5, self-locking device as claimed in claim 4 is characterized in that: be provided with spring between described stop collar and the described keeper.
6, self-locking device as claimed in claim 5 is characterized in that: described first, second groove is circumferential axial straight trough, and described first, second double wedge is circumferential axial straight-tooth.
7, self-locking device as claimed in claim 6 is characterized in that: described allocating slot is a scrobicular ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201703752U CN201338260Y (en) | 2008-12-15 | 2008-12-15 | Single-chisel self-locking device of electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201703752U CN201338260Y (en) | 2008-12-15 | 2008-12-15 | Single-chisel self-locking device of electric hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201338260Y true CN201338260Y (en) | 2009-11-04 |
Family
ID=41233796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201703752U Expired - Lifetime CN201338260Y (en) | 2008-12-15 | 2008-12-15 | Single-chisel self-locking device of electric hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201338260Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011088629A1 (en) * | 2010-01-21 | 2011-07-28 | 浙江海王电器有限公司 | Self-locking device of electric hammer |
-
2008
- 2008-12-15 CN CNU2008201703752U patent/CN201338260Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011088629A1 (en) * | 2010-01-21 | 2011-07-28 | 浙江海王电器有限公司 | Self-locking device of electric hammer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG HAIWANG ELECTRICAL APPLIANCE CO., LTD. Free format text: FORMER OWNER: WANG WENJIANG Effective date: 20100526 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 321200 ZHEJIANG HAIWANG ELECTRICAL APPLIANCE CO., LTD., HUANGLONGSAN ROAD, HUANGLONG INDUSTRY ZONE, HUSHAN STREET, WUYI COUNTRY, ZHEJIANG PROVINCE TO: 321200 NO.18 HUANGLONGSAN ROAD, HUANGLONG INDUSTRIAL DISTRICT, HUSHAN STREET, WUYI COUNTY, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100526 Address after: Three road 321200 Zhejiang Huanglong County in Wuyi Province Hill Street Huanglong Industrial Zone No. 18 Patentee after: Zhejiang SKT Electric Machine Co., Ltd. Address before: Huanglong 321200 Zhejiang County in Wuyi Province Hill Street Huanglong Industrial Zone No. three Zhejiang Haiwang Electric Appliance Co. Ltd Patentee before: Wang Wenjiang |
|
| CX01 | Expiry of patent term |
Granted publication date: 20091104 |
|
| CX01 | Expiry of patent term |