초록 ▼

A power tool and spindle lock. The spindle lock includes a spring and a detent arrangement to control and buffer the rotation of the spindle and to delay the engagement of the locking elements. In some aspects, the invention provides a spindle lock including a spring element which applies substantia

A power tool and spindle lock. The spindle lock includes a spring and a detent arrangement to control and buffer the rotation of the spindle and to delay the engagement of the locking elements. In some aspects, the invention provides a spindle lock including a spring element which applies substantially equal spring force to delay the operation of the spindle lock when the spindle is rotated in the forward direction or in the reverse direction. In some aspects, the invention provides two spring members which cooperate to apply the substantially equal force to delay the operation of the spindle lock when the spindle is rotated in the forward direction or in the reverse direction.

대표청구항 ▼

A power tool and spindle lock. The spindle lock includes a spring and a detent arrangement to control and buffer the rotation of the spindle and to delay the engagement of the locking elements. In some aspects, the invention provides a spindle lock including a spring element which applies substantia

A power tool and spindle lock. The spindle lock includes a spring and a detent arrangement to control and buffer the rotation of the spindle and to delay the engagement of the locking elements. In some aspects, the invention provides a spindle lock including a spring element which applies substantially equal spring force to delay the operation of the spindle lock when the spindle is rotated in the forward direction or in the reverse direction. In some aspects, the invention provides two spring members which cooperate to apply the substantially equal force to delay the operation of the spindle lock when the spindle is rotated in the forward direction or in the reverse direction. plate assembly as in claim 3 further comprising means for producing a release force in a direction opposite to the force transmitted by said stored energy element, said release force preventing said adjusting element from moving by itself in the adjusting direction. 8. A pressure plate assembly as in claim 1 wherein the arresting element comprises a transport securing section which can be brought into transport-securing interaction with an opposing transport-securing section, said transport-securing interaction essentially preventing the arresting element from moving in the arresting direction. 9. A pressure plate assembly as in claim 8 wherein said arresting element has an elongated body section extending in the arresting direction, the transport-securing section on the arresting element being provided at one end of said body section. 10. A pressure plate assembly as in claim 8 wherein said transport securing interaction can be deactivated by centrifugal force. 11. A pressure plate assembly as in claim 10 further comprising a transport securing projection extending essentially radially from one of said transport-securing section of arresting element and said opposing transport securing section, and an opening in the other of said transport securing section of said arresting element and said opposing transport securing section. 12. A pressure plate assembly as in claim 8 wherein said opposing transport-securing section is provided on said gripping element. 13. A pressure plate assembly as in claim 12 wherein said opposing transport-securing section is provided on said gripping element where contact with said blocking element occurs. 14. A pressure plate assembly as in claim 12 wherein said arresting element comprises an elongate body area which can be brought into arresting interaction with the gripping element, the transport-securing section on the arresting element extending essentially parallel to and axially spaced said body area and having a free end which can be brought into securing interaction with the gripping element. 15. A pressure plate assembly as in claim 1 wherein said arresting element comprises a transport-securing section which can be brought into transport-securing interaction with an opposed transport-securing section on said stored energy element. 16. A pressure plate assembly as in claim 15 wherein said transport-securing section on said arresting element comprises a transport-securing projection extending axially toward said stored energy element, said opposed transport-securing section having an opening which is open in the axial direction. 17. A pressure plate assembly as in claim 15 wherein said transport securing interaction can be produced by axial displacement of the pressure plate relative to the housing, said displacement being induced by said stored energy element and exceeding the installation position of the pressure plate relative to the housing. 18. A pressure plate assembly as in claim 1 wherein said adjusting element comprises a transport-securing section which can be brought into transport-securing interaction with an opposed transport-securing section on said gripping element. 19. A pressure plate assembly as in claim 18 wherein said opposing transport-securing section is provided on said gripping element where contact with said blocking element occurs. 20. A pressure plate assembly as in claim 19 wherein said gripping element comprises a blocking section where contact with said blocking element occurs, said blocking section extending between said adjusting element and said pressure plate, said transport-securing section of said adjusting element extending toward said pressure plate. 21. A pressure plate assembly as in claim 18 wherein said transport-securing interaction can be produced by moving the pressure plate relative to the housing beyond the normal installation position. 22. A pressure plate assembly as in claim 18 wherein said adjusting element has an opening and said arresting element comprises an arresting interaction area which engages in said opening with clearance in the adjusting direction. 23. A pressure plate assembly for a friction clutch, comprising: a housing having an axis of rotation; a pressure plate mounted in said housing with freedom to move axially relative to said housing; a stored energy element mounted in said housing and transmitting force along a path from said housing to said pressure plate; a wear-compensating device in the path of force transmission, said wear-compensating device comprising at least one adjusting element which is movable in an adjusting direction to compensate for wear; a blocking element which can be fixed in position relative to said housing; a gripping element attached to said pressure plate, said gripping element blocking said at least one adjusting element against movement in said adjusting direction before wear occurs, said gripping element coming into contact with said blocking element when wear occurs, and an arresting element which can be shifted in an arresting direction when said gripping element comes into contact with said blocking element, thereby arresting the gripping element in a position corresponding to the amount of wear which has occurred, said arresting element comprising a transport securing section which cooperates with said adjusting element to prevent moving the adjusting element in the adjusting direction prior to attaching the housing to a centrifugal mass, and an arresting interaction area which permits relative movement between the adjusting element and the arresting element when wear occurs, said transport securing section allowing essentially no relative movement between the adjusting element and the arresting element prior to attaching the housing to the centrifugal mass. 24. A pressure plate assembly as in claim 23 wherein the adjusting element comprises an elongate opening extending in the adjusting direction and having a length which is longer than the arresting interaction area, said arresting interaction area engaging in said opening during operation, the transport securing section having a length in the adjusting direction which is essentially the same as the length of the opening. 25. A pressure plate assembly as in claim 24 wherein said arresting interaction area extends essentially radially into said elongate opening, and said transport-securing section extends radially from said arresting interaction area. 26. A pressure plate assembly as in claim 24 wherein said transport-securing section is disengageable from said opening by the action of centrifugal force. 27. A pressure plate assembly as in claim 23 further comprising means for producing a release force in a direction opposite to the force transmitted by said stored energy element, said release force preventing said adjusting element from moving by itself in the adjusting direction. ounted in one plane of the load moment lock in a direction perpendicular to an axis of the load moment lock, and wherein the play compensating device has wedge faces which rest against at least one of the output element and the locking elements, and at least one spring which pretensions the play compensating device perpendicular to the axis of the load moment lock in the sense of reducing the distance between the play compensating device, the output element and the locking elements. 2. An adjustment device according to claim 1 wherein the wedge faces include such an angle with an axis of symmetry of the load moment lock that the connection between the play compensating device on one side and the at least one of the output element and the locking elements on the other is self-locking. 3. An adjustment device according to claim 1 or 2 wherein the wedge faces of the play compensating device bear against counter wedge faces of the output element and substantially flat faces of the play compensating device bear against one of opposing faces of the locking elements and parts of the opposing faces. 4. An adjustment device according to claim 1 or 2 wherein the output element has protrusions or curvatures formed symmetrical to the axis of symmetry of the load moment lock for spot or linear contact of substantially rectilinear or inclined faces of the play compensating device. 5. An adjustment device according to claim 4 wherein the wedge faces of the play compensating device bear against the protrusions or curvatures of the output element arranged symmetrical relative to the axis of symmetry of the load moment lock and the substantially rectilinear surfaces of the play compensating device bear against the opposing faces of the locking elements or parts of the opposing faces. 6. An adjustment device according to claim 4 wherein the wedge faces of the play compensating device bear against inclined expanding faces of the locking elements and the substantially rectilinear faces of the play compensating device bear against the protrusions or curvatures of the output element. 7. An adjustment device according to claim 1 wherein the drive element has recesses which with torque on the drive side after lifting the frictional contact of the locking elements against the adjustment housing bear with positive engagement against claws of the output element and entrain same in the drive direction.