초록 ▼

Disclosed and taught is a novel drive mechanism for a cyclic operating tool employing an energized flywheel to provide the necessary energy to perform a working cycle. The drive mechanism disclosed is particularly useful in hand tool applications such as a hand held nailing machine. The flywheel may

Disclosed and taught is a novel drive mechanism for a cyclic operating tool employing an energized flywheel to provide the necessary energy to perform a working cycle. The drive mechanism disclosed is particularly useful in hand tool applications such as a hand held nailing machine. The flywheel may be energized by a corded or battery powered motor. The herein disclosed mechanism teaches a novel pair of ball ramp cam plates wherein a first pair of ball ramps cause an initial engagement of a clutch with the energized flywheel whereupon rotation of the clutch causes activation of a second pair of ball ramps which affect compression of a spring which acts to increase the pressure applied to the clutch thereby assuring a slip free engagement between the clutch and he flywheel throughout the working cycle of the drive mechanism. Upon completion of the drive mechanisms working cycle, the second pair of ball ramp cam plates further act to disengage the clutch from the flywheel whereby the flywheel may dissipate the unused kinetic energy remaining within the flywheel as the drive mechanism returns to the start position.

대표청구항 ▼

Disclosed and taught is a novel drive mechanism for a cyclic operating tool employing an energized flywheel to provide the necessary energy to perform a working cycle. The drive mechanism disclosed is particularly useful in hand tool applications such as a hand held nailing machine. The flywheel may

Disclosed and taught is a novel drive mechanism for a cyclic operating tool employing an energized flywheel to provide the necessary energy to perform a working cycle. The drive mechanism disclosed is particularly useful in hand tool applications such as a hand held nailing machine. The flywheel may be energized by a corded or battery powered motor. The herein disclosed mechanism teaches a novel pair of ball ramp cam plates wherein a first pair of ball ramps cause an initial engagement of a clutch with the energized flywheel whereupon rotation of the clutch causes activation of a second pair of ball ramps which affect compression of a spring which acts to increase the pressure applied to the clutch thereby assuring a slip free engagement between the clutch and he flywheel throughout the working cycle of the drive mechanism. Upon completion of the drive mechanisms working cycle, the second pair of ball ramp cam plates further act to disengage the clutch from the flywheel whereby the flywheel may dissipate the unused kinetic energy remaining within the flywheel as the drive mechanism returns to the start position. bearing bracket being arranged in a side joint of the rear hatch in the vehicle body and connected to a post of the vehicle body by way of a holding angle; and wherein the boreholes run on a rear-sided exterior of the post. 3. Holding device as claimed in claim 2, wherein the hinge bolt of the top bearing comprises a joint element which comprises a spherical segment on the bolt which is held in the corresponding bearing shells of the bearing bracket. 4. Holding device for a spare wheel of a motor vehicle, said holding device being disposed on the outside of a swivellable rear hatch and comprising a wheel carrier which is held by at least two support arms and which is supported by way of bearings on the vehicle body so as to swivel, the support arms being spaced apart and projecting from the wheel carrier and end sides thereof being connected to the bearings, the bearings being held on the vehicle body and forming a vertical swivel axis which is arranged independently of a swivel axis of the rear hatch, the wheel carrier being swivellable about the swivel axis of the bearings up to the rear hatch into a fixing position and being held on a shock absorber cross member by way of a support member in a holding element and being freely swivellable from the rear hatch into a release position, wherein a holding angle is attached with its one attachment leg for the bearing bracket to an inside wall surface of a post of the vehicle body and with its other holding leg to an outside wall surface of the post. 5. Holding device for a spare wheel of a motor vehicle, said holding device being disposed on the outside of a swivellable rear hatch and comprising a wheel carrier which is held by at least two support arms and which is supported by way of bearings on the vehicle body so as to swivel, the support arms being spaced apart and projecting from the wheel carrier and end sides thereof being connected to the bearings, the bearings being held on the vehicle body and forming a vertical swivel axis which is arranged independently of a swivel axis of the rear hatch, the wheel carrier being swivellable about the swivel axis of the bearings up to the rear hatch into a fixing position and being held on a shock absorber cross member by way of a support member in a holding element and being freely swivellable from the rear hatch into a release position, wherein the bearing bracket comprises a projecting arm which corresponds to an attachment leg of a holding angle and to which is attached a bearing segment having a U-shaped cross section and which comprises vertically spaced bearing plates having bolt boreholes, said bearing segment having a rear side which rests true to shape against an outer wall surface of a post of the vehicle body. 6. Holding device for a spare wheel of a motor vehicle, said holding device being disposed on the outside of a swivellable rear hatch and comprising a wheel carrier which is held by at least two support arms and which is supported by way of bearings on the vehicle body so as to swivel, the support arms being spaced apart and projecting from the wheel carrier and end sides thereof being connected to the bearings, the bearings being held on the vehicle body and forming a vertical swivel axis which is arranged independently of a swivel axis of the rear hatch, the wheel carrier being swivellable about the swivel axis of the bearings up to the rear hatch into a fixing position and being held on a shock absorber cross member by way of a support member in a holding element and being freely swivellable from the rear hatch into a release position, wherein a body post exhibits an insertion opening for internal arrangement of an attachment leg of a holding angle. 7. Holding device for a spare wheel of a motor vehicle, said holding device being disposed on the outside of a swivellable rear hatch and comprising a wheel carrier which is held by at least two support arms and which is supported by way of bearings on the vehicle body so as to swivel, the support arms being spaced apart and projecting from the wheel carrier and end sides thereof being connected to the bearings, the bearings being held on the vehicle body and forming a vertical swivel axis which is arranged independently of a swivel axis of the rear hatch, the wheel carrier being swivellable about the swivel axis of the bearings up to the rear hatch into a fixing position and being held on a shock absorber cross member by way of a support member in a holding element and being freely swivellable from the rear hatch into a release position, wherein a bearing bracket is enveloped by a cover element which is slidable thereon and which comprises an opening for one of the support arms and whose rear sided face rests sealingly on a wall surface of a post of the vehicle body. 8. Holding device for a spare wheel of a motor vehicle, said holding device being disposed on the outside of a swivellable rear hatch and comprising a wheel carrier which is held by at least two support arms and which is supported by way of bearings on the vehicle body so as to swivel, the support arms being spaced apart and projecting from the wheel carrier and end sides thereof being connected to the bearings, the bearings being held on the vehicle body and forming a vertical swivel axis which is arranged independently of a swivel axis of the rear hatch, the wheel carrier being swivellable about the swivel axis of the bearings up to the rear hatch into a fixing position and being held on a shock absorber cross member by way of a support member in a holding element and being freely swivellable from the rear hatch into a release position, wherein one of the bearings is a bottom bearing which comprises a bearing bracket connected to the vehicle body and a hinge element mounted on the support arm; wherein the bearing bracket comprises a rear-sided mounting plate and adjacent bracket plates which are spaced relative to each other and have bolt boreholes for the vertical swivel axis; and wherein between the bracket plates an installable hinged lever is held on slide bushings of a hinge bolt so as to swivel. 9. Holding device as claimed in claim 8, wherein between the bearing bracket and the hinge element there is a pneumatic spring which is hinged, on the one hand, to a projecting lever of the bearing bracket and, on the other hand, to a hinged lever in a receptacle. 10. Holding device as claimed in claim 9, wherein in the fixing position of the wheel carrier the pneumatic spring exhibits with the lever arm (a) a maximum closing torque; and in the case of a swivel motion of the wheel carrier in the direction of the release position, after passing through a dead point position, a maximum swivel torque with the lever arm (b). 11. Holding device as claimed in claim 8, wherein an end side of the hinge element exhibits a stop groove with which a moveable locking element mates in the release position and which is designed so as to be unlockable in order to swivel the hinge element with the wheel carrier from the release position into the fixing position. 12. Holding device as claimed in claim 11, wherein the locking element comprises a swivellable lever arranged on a bolt and the lever being engaged with a free end with the stop groove. 13. Holding device for a spare wheel of a motor vehicle, said holding device being disposed on the outside of a swivellable rear hatch and comprising a wheel carrier which is held by at least two support arms and which is supported by way of bearings on the vehicle body so as to swivel, the support arms being spaced apart and projecting from the wheel carrier and end sides thereof being connected to the bearings, the bearings being held on the vehicle body and forming a vertical swivel axis which is arranged independently of a swivel axis of the rear hatch, the wheel carrier being swivellable about the swivel axis of the bearings up to the rear hatch into a fixing position an