IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0240962
(2002-01-17)
|
우선권정보 |
DE-101 06 034(2001-02-09) |
국제출원번호 |
PCT/DE02/000113
(2002-01-17)
|
§371/§102 date |
20021224
(20021224)
|
국제공개번호 |
WO02/064321
(2002-08-22)
|
발명자
/ 주소 |
- Baumann,Otto
- Saur,Dietmar
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
10 인용 특허 :
14 |
초록
▼
The invention is based on a power tool having a beater mechanism (14) and a coupling device (12, 100), which can be engaged and disengaged in order to make and break a drive connection (16, 102) of the beater mechanism (14). It is proposed that the coupling device (12, 100) has a synchronizing devic
The invention is based on a power tool having a beater mechanism (14) and a coupling device (12, 100), which can be engaged and disengaged in order to make and break a drive connection (16, 102) of the beater mechanism (14). It is proposed that the coupling device (12, 100) has a synchronizing device (18, 112), with a detent mechanism ( 20, 110) which transmits a drive moment and which in a synchronizing operation has at least two corresponding detent elements (22, 24, 108), at least one of the detent elements (22) being movable about its detent position upon an overlooking moment, counter to the spring force of a spring element (26, 116).
대표청구항
▼
The invention claimed is: 1. A drilling-and/or chipping hammer having a beater mechanism (14) and a coupling device (12, 100), which is engageable and disengageable in order to make and break a drive connection (16, 102) of the beater mechanism (14), wherein the coupling device (12, 100) has a sync
The invention claimed is: 1. A drilling-and/or chipping hammer having a beater mechanism (14) and a coupling device (12, 100), which is engageable and disengageable in order to make and break a drive connection (16, 102) of the beater mechanism (14), wherein the coupling device (12, 100) has a synchronizing device (18, 112), with a detent mechanism (20, 110) which transmits a drive moment to the beater mechanism (14 ) and which has at least two corresponding detent elements (22, 24, 108), wherein said coupling device (12, 100) has two coupling elements (32, 44, 104, 122), wherein the two coupling elements (32, 44, 104, 122) are synchronized by the synchronizing device (18, 112) when the coupling device (12, 100) is engaged, at least one of the detent elements (22) being movable about its detent position upon an overlooking moment, counter to a spring force of a spring element (26, 116), wherein said coupling elements (32, 44, 104, 122) have correspondingly embodied clawlike positive-engagement elements (48, 50) bridging said synchronizing device (18, 112) when the coupling device (12) is fully engaged. 2. The drilling-and/or chipping hammer of claim 1, wherein the detent element (22) that is movable counter to a spring force is formed by a roller body, and the detent element (24, 108) , corresponding to the detent element (22) embodied as a roller body, is formed by a recess. 3. The drilling-and/or chipping hammer of claim 2, wherein the detent element (22) embodied as a roller body is formed by a ball, which is braced on a conical ring (114) that is displaceable on a drivable shaft axially counter to a spring (116). 4. The drilling-and/or chipping hammer of claim 3, wherein the conical ring (114), once the drive connection is made, is axially fixed by a stop (124). 5. The drilling-and/or chipping hammer of claim 3, wherein the detent element (22) embodied as a ball is braced radially inward on the displaceable conical ring (114) and can be brought radially outward into operative connection with the corresponding detent element (108) as a recess. 6. The drilling-and/or chipping hammer of claim 1, wherein the detent element (22) is movable out of its detent position counter to an annular spring (26). 7. The drilling-and/or chipping hammer of claim 6, wherein the detent element (22), at the onset of the synchronizing operation, is displaced along a conical face (28) counter to the annular spring (26). 8. The drilling-and/or chipping hammer of claim 7, wherein the conical face (28) is formed onto one end of a component that is displaceable axially and fixed against relative rotation on a drivable shaft (30), and a detent element (24) embodied as a recess extends into the conical face (28). 9. The drilling-and/or chipping hammer of claim 8, wherein at the onset of the synchronizing operation, the detent element (22 ) is guided radially outward along the conical face (28). 10. The drilling-and/or chipping hammer of claim 8, wherein a component (64) that transmits a pulse of the beater mechanism (14) is connected to the displaceable component (32) via a connection (76), which transmits a force in the pulse direction. 11. The drilling-and/or chipping hammer of claim 1, wherein a curvature radius of at least two detent elements (22) embodied as recesses is the same as a curvature radius of the detent elements ( 22) embodied as roller bodies. 12. The drilling-and/or chipping hammer of claim 1, wherein the detent element (22) is supported in one part of a drive element (74) of the beater mechanism (14). 13. The drilling-and/or chipping hammer of claim 1, wherein the coupling device (12) has positive-engagement elements ( 48, 50, 128, 130), which after the synchronizing operation come into engagement along with the detent mechanism (20, 110).
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