TWI838106B - Descending device - Google Patents

Abstract

This disclosure is directed to a descending device for a rope, which includes a body, a clamping cam, a pulley and an operating assembly. The clamping cam is surrounded by the rope, the cam is pivoted to the body, and a resetting spring is attached to the clamping cam to rotate the clamping cam so that the rope is clampped between the clamping cam and the body. The pulley is pivoted to the clamping cam. The operating assembly has a handle and an arm, the handle is pivoted to the body, the handle has a stopper, and the arm is pivoted to the handle. The handle may be rotated toward a loosening direction so that the arm is moved to abut the pulley and the block, and a continual rotation of the handle may further rotate the clamping cam to loosen the rope. When the handle is continually rotated towards the loosening direction, a rotation of the pulley leads to a slip of the arm from the pulley, and the clamping cam is rotated and by the resetting spring to reset and clamp the rope.

Description

Rope rappelling device

The present invention relates to a rappelling device, in particular to a rappelling device that can automatically clamp when the handle is pulled to the end of the release stroke.

The existing rappelling device generally includes a housing, a cam and a handle. The cam is arranged in the housing and the rope is wound around the cam. The cam can rotate so that the rope is clamped between the cam and the housing so that the rappelling device is fixed to a certain position on the rope, and the person is hung on the housing. The handle is pivoted on the housing and linked to the cam, and the person can rotate the cam by pulling the handle to loosen the cam from the rope, and the rappelling device can slide down along the rope. However, when the person wants to stop the rappelling, the handle needs to be reversed. When the person is rappelling, he/she continues to apply force to the handle, so when he/she wants to stop the rappelling, he/she needs to change the direction of the force, which is inconvenient to operate.

In view of this, the inventor has conducted intensive research on the above-mentioned existing technologies and applied theories to try his best to solve the above-mentioned problems, which has become the goal of the inventor's improvement.

The present invention provides a rappelling device that can automatically clamp when the handle is pulled to the end of the release stroke.

The present invention provides a rappelling device for a rope, which comprises a body, a clamping cam, a pulley and an operating assembly. The clamping cam is for the rope to be wound around, the cam is pivoted on the body, and a return spring is attached to the clamping cam to rotate the clamping cam to clamp the rope between the clamping cam and the body. The pulley is pivoted on the clamping cam. The operating assembly comprises a handle and a swing arm, the handle is pivoted on the body, the handle has a block, and the swing arm is pivoted on the handle. The handle can be rotated in a loosening direction to move the swing arm to abut against the pulley and the block. The handle continues to rotate to further push the clamping cam to rotate and loosen the rope. When the handle continues to rotate in the loosening direction, the pulley rotates to make the swing arm slip off the pulley, and the clamping cam is reset by the reset spring to clamp the rope.

In one embodiment of the present invention, the main body includes a hanging hole.

In one embodiment of the present invention, the main body includes a first shell and a second shell that are relatively assembled, the first shell has an inner side surface and an outer side surface, the clamping cam is arranged on the inner side surface, the first shell has a slide groove, the pulley is located on the outer side surface, and the pulley is pivoted on the clamping cam with a pulley shaft and the pulley shaft passes through the slide groove. The handle is pivoted on the outer side surface.

In one embodiment of the present invention, the operating assembly includes a locking latch, which is hinged on the handle and can be rotated to a position to engage the body to lock the handle.

In one embodiment of the present invention, the main body has an opening for passing the rope.

In one embodiment of the present invention, when the handle can be reversed relative to the loosening direction, the swing arm can be pushed away from the block by the pulley and bypass the pulley.

In one embodiment of the present invention, the end of the swing arm has a curved surface, and when the swing arm abuts against the pulley, the curved surface abuts against the pulley.

The rappelling device of the present invention has a pulley on its clamping cam. When the user wants to loosen the rope, he rotates the pull handle in the loosening direction, and the pull handle pushes the pulley with its upper swing arm to rotate the clamping cam to loosen the rope for rappelling. When the user wants to stop rappelling during the rappelling process, the user only needs to continue to rotate the pull handle in the loosening direction to make the swing arm slide off the pulley, and the clamping cam will reset the clamping rope. Therefore, the user does not need to change the force direction and the operation is convenient.

10: Rope

100: Body

101: Hanging hole

102: Chute

103: Open mouth

110: First shell

111: Outer side

112: Inner side

113: Locking slot

120: Second shell

200: Clamp the cam

201: Camshaft

202:Reset spring

210:Pulley

211: Pulley shaft

300: Operation components

310: handle

311:Block

312: handle shaft

320: Locking bolt

330: Swing arms

331: swing arm shaft

332:Curved surface

D: Loosening direction

Figure 1 is a three-dimensional schematic diagram of a rope descent device according to an embodiment of the present invention.

Figure 2 is a three-dimensional exploded schematic diagram of the rope descent device of an embodiment of the present invention.

Figure 3 is a schematic diagram of the rappelling device of the embodiment of the present invention with its handle in the initial position and locked.

Figure 4 is a schematic diagram of the rappelling device of the embodiment of the present invention with its handle in the initial position and unlocked.

Figures 5 to 7 are schematic diagrams of the release action of the rappelling device of the embodiment of the present invention.

Figures 8 to 9 are schematic diagrams of the terminal clamping action of the rappelling device of the embodiment of the present invention.

Referring to FIG. 1 and FIG. 2 , an embodiment of the present invention provides a rappelling device for a rope 10. The rappelling device of the present invention comprises a body 100, a clamping cam 200, a pulley 200 and an operating assembly 300.

As shown in FIG. 2 , the main body 100 is generally a hollow flat body, and the main body 100 includes a first shell 110 and a second shell 120 that are assembled relatively. The first shell 110 has an inner side surface 112 and an outer side surface 111, and the first shell 110 has a slide groove 102. The handle 300 is pivoted on the outer side surface 111. The edge of the first shell 110 and the edge of the second shell 120 are arranged at intervals at one side of the main body 100 to form an opening 103. The main body 100 includes a hanging hole 101, and the hanging hole 101 passes through the main body 100 for setting a hanging person.

As shown in FIG2 , the clamping cam 200 is pivoted on the body 100 and the rope 10 is wound around it. Specifically, the clamping cam 200 is pivoted on the body 100 with a camshaft 201, and the camshaft 201 is disposed in the body 100. At least one end of the camshaft 201 is connected to the inner side surface 112 of the first housing 110, and in this embodiment, the other end of the camshaft 201 is connected to the second housing 120. The clamping cam 200 is configured corresponding to the inner side surface 112 of the first housing 110 and is accommodated in the body 100. The rope 10 can pass through the opening 103 of the body 100 and enter the body 100 to be wound around the clamping cam 200. The clamping cam 200 is provided with a return spring 202, which is respectively connected to the clamping cam 200 and the body 100 to rotate the clamping cam 200 to a clamping position as shown in FIG. 5. When the clamping cam 200 is at the clamping position, the rope 10 is clamped between the clamping cam 200 and the inner wall of the body 100.

As shown in FIG2 , the pulley 200 is pivoted on the clamping cam 200 with a pulley shaft 211. The pulley 200 is located on the outer side 111 of the first housing 110 and the pulley shaft 211 passes through the slide groove 102 to connect the pulley 200 and the clamping cam 200. The length of the slide groove 102 corresponds to the predetermined rotation stroke of the clamping cam 200. When the clamping cam 200 rotates, the pulley 200 can move along the slide groove 102. As shown in FIG3 to FIG5 , when the clamping cam 200 is in the clamping position, the clamping cam 200 is located at one end of the slide groove 102.

As shown in FIG2 , the operating assembly 300 includes a handle 300, a swing arm 330, and a locking latch 320. The handle 300 is pivoted to the body 100 at a handle axis 312. Specifically, the handle 300 is pivoted on the outer side surface 111 of the first housing 110 of the body 100, and the handle 300 has a block 311. When the handle 300 rotates along the handle axis 312, the block 311 moves around the handle axis 312. The swing arm 330 is pivoted to the handle 300 at a swing arm axis 331 so as to be rotatable, and when the handle 300 rotates along the handle axis 312, the swing arm 330 moves around the handle axis 312. The end of the swing arm 330 has an arc surface 332, and the arc surface 332 extends with the swing arm shaft 331 as the center. In this embodiment, the swing arm shaft 331 is axially parallel to the aforementioned handle shaft 312, pulley shaft 211 and cam shaft 201.

As shown in FIG. 1 and FIG. 2 , the locking latch 320 is pivoted on the handle 300. When the handle 300 is at an initial position as shown in FIG. 1 and FIG. 3 , the locking latch 320 can rotate to a position of a locking groove 113 on the clamping body 100 to lock the handle 300. Specifically, the initial position is located at one end of the rotation stroke of the handle 300.

When the locking latch 320 is rotated out of the locking groove 113 and the body 100 is released as shown in FIG4 , the handle 300 can be rotated in a release direction D away from the initial position along the handle axis 312 as shown in FIG5 .

As shown in Figures 6 and 7, the handle 300 can rotate in the release direction D to move the swing arm 330 to the end of the arc surface 332 against the pulley 200 and one side of the swing arm 330 against the block 311. At this time, the block 311 and the pulley 200 are respectively against the opposite sides of the swing arm 330 in the longitudinal direction, so the handle 300 continues to rotate to further push the clamping cam 200 to rotate away from the clamping position and release the rope 10. After the rope 10 is released, the rappelling device can slide down along the rope 10.

As shown in FIG8 and FIG9 , when the pull handle 300 continues to rotate in the loosening direction D after the clamping cam 200 releases the rope 10, the pulley 200 rotates and moves relative to the swing arm 330 along the arc surface 332. When the pulley 200 moves relative to the swing arm 330 to the other side of the swing arm 330 in the longitudinal direction, the pulley 200 and the block 311 abut against the same side of the swing arm 330 in the longitudinal direction, so that the swing arm 330 slides off the pulley 200. After the swing arm 330 slides off the pulley 200, the clamping cam 200 is rotated and reset to the clamping position by the reset spring 202 to clamp the rope 10. Then, when the handle 300 is reversed relative to the release direction D, the swing arm 330 can be pushed away from the block 311 by the pulley 200 and bypass the pulley 200 to allow the handle 300 to reverse.

The rappelling device of the present invention has a pulley 200 on its clamping cam 200. When the user wants to loosen the rope 10, he rotates the pull handle 300 in the loosening direction D, and the pull handle 300 pushes the pulley 200 with its upper swing arm 330 and rotates the clamping cam 200 to loosen the rope 10 for rappelling. When the user wants to stop rappelling during the rappelling process, the user only needs to continue to rotate the pull handle 300 in the loosening direction D to make the swing arm 330 slide off the pulley 200, and the clamping cam 200 will reset the clamping rope 10. Therefore, the user does not need to change the force direction and the operation is convenient.

The above is only a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Other equivalent variations that apply the patent spirit of the present invention should all fall within the patent scope of the present invention.

10: Rope

100: Body

102: Chute

103: Open mouth

110: First shell

111: Outer side

112: Inner side

113: Locking slot

120: Second shell

200: Clamp the cam

201: Camshaft

202:Reset spring

210:Pulley

211: Pulley shaft

300: Operation components

310: handle

311:Block

312: handle shaft

320: Locking bolt

330: Swing arms

331: swing arm shaft

332:Curved surface

D: Loosening direction

Claims (8)

A rappelling device is used for a rope, and the rappelling device comprises: a body; a clamping cam for the rope to be wound around, pivoted on the body, the clamping cam is attached with a return spring to rotate the clamping cam to clamp the rope between the clamping cam and the body; a pulley pivoted on the clamping cam; and an operating assembly, comprising a handle and a swing arm, the handle pivoted on the body, the handle having A baffle, the swing arm is hinged on the pull handle, the pull handle can rotate in a loosening direction to move the swing arm to abut against the pulley and the baffle, and the pull handle continues to rotate to further push the clamping cam to rotate and loosen the rope, wherein when the pull handle continues to rotate in the loosening direction, the pulley rotates to make the swing arm slip off the pulley, and the clamping cam is rotated and reset by the reset spring to clamp the rope. A rappelling device as described in claim 1, wherein the body includes a hanging hole. A rappelling device as described in claim 1, wherein the body comprises a first shell and a second shell which are assembled relative to each other, the first shell having an inner side surface and an outer side surface, the clamping cam being arranged on the inner side surface, the first shell having a slide groove, the pulley being located on the outer side surface, and the pulley being pivoted on the clamping cam by a pulley shaft and the pulley shaft passing through the slide groove. A rappelling device as described in claim 3, wherein the handle is pivotally disposed on the outer side. A rappelling device as described in claim 1, wherein the operating assembly includes a locking latch, the locking latch is pivoted on the handle, and the locking latch can be rotated to a position where it engages with the body to lock the handle. A rappelling device as described in claim 1, wherein the body has an opening for passing the rope. A rappelling device as described in claim 1, wherein when the pull handle is reversed relative to the release direction, the swing arm can be pushed away from the block by the pulley and bypass the pulley. The rappelling device described in claim 1, wherein the end of the swing arm has a curved surface, and when the swing arm abuts against the pulley, the curved surface abuts against the pulley.

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