WO2018157308A1

WO2018157308A1 - Lockable type rope winding device

Info

Publication number: WO2018157308A1
Application number: PCT/CN2017/075263
Authority: WO
Inventors: 李生广; 邓静; 李满天; 何宇能
Original assignee: 深圳龙海特机器人科技有限公司
Priority date: 2017-02-28
Filing date: 2017-02-28
Publication date: 2018-09-07

Abstract

A lockable type rope winding device, comprising a shell (10). A first rotary shaft (20) is provided within the shell (10); a winding drum (22) for winding a rope belt (23), a coil spring (21) for driving the winding drum (22) to rotate and a ratchet wheel (24) coaxially disposed with the winding drum (22) are fixedly sheathed on the first rotary shaft (20); the ratchet wheel (24) is fixedly connected with the winding drum (22). A pawl (30) for connecting a locking wire (33) and locking the ratchet wheel (24), a second rotary shaft (31) for supporting the pawl (30), and an elastic piece (32) for pushing the pawl (30) to detach from the ratchet wheel (24) are further provided within the shell (10). And the shell (10) is provided with a via hole (11) for the rope belt (23) and the locking wire (33) to pass through. The lockable type rope winding device can lock the rope belt (23); when the lockable type rope winding device is in an unlocking state, the winding drum (22) and the coil spring (21) can together drive the rope belt (23) to be rolled up.

Description

Lockable rope reel device

[0001] The present invention is in the field of mechanical technology, and more particularly, it relates to a lockable reel device.

Background technique

[0002] When carrying heavy objects, people often need to use ropes to tie heavy objects and then carry them. The ropes can transmit force and are suitable for carrying heavy objects from long distances. However, in general, the length of the strap is fixed. However, in the handling process, it is often required that the weight can gradually approach the target position from the starting position, so that the strap can be freely extended or shortened. In the prior art, a pulley or a rope reel or the like is often used to achieve elongation and shortening of the strap, but the movement of the strap in this manner is continuous and cannot be locked, that is, the strap cannot be fixed at a set length. This will cause the weight to be carried by the rope, the pulley and the rope will move, the length of the rope cannot be controlled, and the force applied to the weight is not well controlled and unstable.

technical problem

[0003] It is an object of the present invention to provide a lockable reel device which is intended to solve the problem that the cord cannot be locked, the length thereof is uncontrollable, and the force of the cord acting on the weight is also unstable.

Problem solution

Technical solution

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: providing a lockable reel device, comprising a housing, wherein the housing is provided with a first rotating shaft, and the first rotating shaft outer fixing sleeve is provided a reel of a wound cord, a coil spring for driving the reel, and a ratchet disposed coaxially with the reel, the ratchet being fixedly coupled to the reel, the housing further comprising: a pawl for connecting the locking wire and locking the ratchet, a second rotating shaft supporting the pawl, and an elastic member for pushing the pawl out of the ratchet, the housing is provided with the upper a cord and a through hole through which the locking wire passes.

[0005] Further, the ratchet is sleeved on the reel.

[0006] Further, the elastic member is a torsion spring, the torsion spring is sleeved on the second rotating shaft, and one end of the torsion spring is fixed on the casing, and the other end of the torsion spring is The pawls are fixedly connected.

[0007] Further, the pawl is bent toward the ratchet near an end of the ratchet. [0008] Further, the upper jaw of the pawl is provided with a positioning hole that is coupled to the locking line.

[0009] Further, the positioning hole is located at one end of the pawl near the second rotating shaft.

[0010] Further, the first rotating shaft is disposed at a central area of the casing, and the second rotating shaft is disposed at a corner of the casing.

[0011] Further, the reel is provided with a threaded hole, and the screw is inserted through the coil spring and screwed into the threaded hole to fix the reel and the coil spring.

[0012] Further, a friction reducing block is disposed at the through hole.

[0013] Further, a plurality of support plates are disposed on a side of the casing that is connected to the first rotating shaft and the second rotating shaft.

[0014] Further, the housing partially protrudes outward to form a fixing seat, and the fixing seat is provided with a fixing hole for fixing the housing.

Advantageous effects of the invention

Beneficial effect

[0015] The beneficial effect of the lockable reel device provided by the present invention is that: compared with the prior art, the reel of the lockable reel device of the present invention cooperates with the coil spring, so that the cord can be rolled up or Stretching, during this process, the rotation of the reel will drive the ratchet to rotate. When it is necessary to lock the strap, the locking line pulls the pawl toward the ratchet to lock the ratchet, and then fix the reel and the coil spring. The rope on the reel is also locked and can no longer be stretched or shortened; when it is not necessary to lock the strap, the lock line is loosened, and the pawl pushes the pawl out of the ratchet under the action of the elastic member, so that the strap can Free to stretch or roll up. Brief description of the drawing

DRAWINGS

1 is a schematic structural view of a lockable reel device according to an embodiment of the present invention;

2 is a schematic structural diagram of a lockable reel device with a cord and a locking line according to an embodiment of the present invention;

[0018] In the drawings: 10-shell; 20-first shaft; 21- coil spring; 22-roll; 23-rope; 11-through hole; ratchet-2 4; pawl-30; second shaft -31 ; Elastic member - 32; Locking wire - 33; Positioning hole - 34; Threaded hole - 25; Screw - 26; Friction reducing block - 12; Support plate - 13; Mounting seat - 14; Embodiments of the invention

[0019] In order to make the technical problems, technical solutions, and advantageous effects of the present invention more comprehensible, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0020] Referring to Figures 1 and 2, the lockable reel device of the present invention will now be described. The lockable reel device includes a housing 10, and a first rotating shaft 20 is disposed in the housing 10. The outer rotating sleeve of the first rotating shaft 20 is provided with a coil spring 21, and the outer fixing sleeve of the coil spring 21 is provided with a reel 22. The inner side of the coil spring 21 is fixedly connected to the first rotating shaft 20, the outer side of the coil spring 21 is fixedly connected to the inner side of the reel 22, the cord 23 is wound around the outer circumference of the reel 22, and one end of the cord 23 is fixed to the reel 22, and the other end is Passing through the through hole 11 through which the supply cord 23 is provided on the casing 10, extending outside the casing 10 and connecting the external load, and stretching the rope 23 wound around the reel 22, the coil spring The pair of reels 22 produces a restoring force. After the stretching is cancelled, the restoring force causes the cord 23 wound around the reel 22 to be rolled up; the reel 24 is fixedly coupled to the reel 22, and the reel 22 is identical to the ratchet 24 In the shaft arrangement, the housing 10 is further provided with a pawl 30 for locking with the ratchet 24 and an elastic member 32 for pushing the pawl 30 away from the ratchet 24, and the second rotating shaft 31 is for supporting the pawl 30, and the pawl 30 is wound. The second rotating shaft 31 rotates, and the locking claw 33 is connected to the pawl 30, and the locking wire 33 moves on the housing 10. The through hole 11 is worn out, the elongation of the rope 23 or the reel 22 driving the rope 2 3 to roll up will drive the ratchet 24 to rotate. When the locking strap 23 is required to be locked, the locking line 33 is pulled to drive the pawl 30 to rotate into the ratchet. At the tooth groove of the 24, the pawl 30 locks the ratchet 24 so that the reel 22 and the coil spring 21 fixedly coupled to the ratchet 24 can no longer be rotated, and the cord 23 wound around the reel 22 is also locked. There is no need to lock the strap 23吋, the lock line 33 is loose, the elastic member 32 drives the pawl 30 away from the ratchet 24, the ratchet 24 can rotate freely, and the spool 22 and the coil spring 21 fixedly connected to the ratchet 24 can also rotate freely, so that The strap 2 3 can be freely stretched or rolled up.

[0021] Compared with the prior art, the reel 22 of the lockable reeling device of the present invention cooperates with the coil spring 21 so that the cord 23 can be rolled up or elongated, in the process, the reel 22 rotates. The ratchet 24 is rotated, and when the cord 23 is locked, the locking line 33 pulls the pawl 30 toward the ratchet 24, and the pawl 30 extends into the slot of the ratchet 24 to lock, thereby locking the ratchet 24, and thus The reel 22 and the coil spring 21 are fixed, and the cord 23 wound around the reel 22 is also locked and can no longer be stretched or shortened; when the locking strap 23吋 is not required, the locking cord 33 is loosened, the spine The pawl 30 pushes the pawl 30 out of the ratchet 24 under the action of the elastic member 32, The cord 23 can be freely stretched or rolled up.

[0022] Further, the pawl 30 is distributed toward the cogging direction of the ratchet wheel 24, and is locked by the ratchet wheel 24 in cooperation with the pawl 30. The ratchet wheel 24 has a helical tooth structure, and in the locked state, the teeth of the helical tooth face are inserted. The pawl 30 has a pressure toward the reel 22, so that the locking effect is better and the locking is more stable; in the present embodiment, the strap 23 is wound on the reel 22 in the direction of the counterclockwise, so the strap 23 is stretched. During the process, the force of the coil spring 21 on the reel 22 is a smooth needle, and the reel 22 drives the ratchet wheel 24 to have a tendency to rotate along the needle, locking the device 吋, due to the distribution of the pawl 30 toward the tooth groove of the ratchet 24, the spine The claw 30 is inserted into the tooth groove and meshes with the helical tooth, and the ratchet wheel 24 has a tendency to rotate under the action of the restoring force of the coil spring 21, so that the pawl 30 can tightly bear against the helical tooth to achieve locking, when the lock needs to be unlocked.吋, the cord 23 is gently pulled, so that the ratchet 24 rotates in the direction of the needle, so that the ratchet 24 pushes the pawl 30 to rotate in the reverse direction. Under the restoring force of the elastic member 32, the pawl 30 is away from the ratchet 24, and the strap 23 is restored. By the state of telescopic. In other embodiments, the cord 23 can also be wound on the reel 22 in the direction of the reel, so that the tension of the coil spring 21 against the reel 22 during the stretching process is reversed, the reel 22 The ratchet wheel 24 has a tendency to rotate the counter-rotating needle. After the device is locked, the pawl 30 is inserted into the tooth groove and meshes with the helical tooth due to the distribution of the pawl 30 toward the tooth groove of the ratchet wheel 24. The ratchet wheel 24 recovers the force at the coil spring 21. Under the action, there is a tendency of the reverse needle to rotate, so that the pawl 30 can firmly hold the helical tooth to achieve locking. When the locking cymbal needs to be released, the strap 23 is gently pulled, so that the ratchet 24 rotates in the direction of the needle, so that the ratchet 24 The pawl 30 is pushed in the reverse direction to move away from the ratchet 24 under the restoring force of the elastic member 32, and the strap 23 is restored to the state of being freely stretchable.

[0023] Further, referring to FIG. 1 and FIG. 2, in the present embodiment, the ratchet 24 is sleeved on the reel 22, so that the force of the reel 22 acting on the ratchet 24 is distributed along the inner surface of the ratchet 24, The multiple effective forces act to drive the ratchet 24 to rotate, and the reel 22 and the ratchet 24 rotate together to be more efficient and flexible.

[0024] Further, the central axis of the ratchet 24 coincides with the central axis of the reel 22, the reel 22 drives the ratchet 24 to rotate coaxially, the rotation is smooth, and the process of stretching and rolling the strap 23 is smoother, and The reel 22 is rotated to any position for locking, and the pawl 30 has the same force and uniform distribution to the ratchet 24, and the locking process is more stable.

[0025] Further, referring to FIG. 1 and FIG. 2, in the embodiment, the elastic member 32 is a torsion spring, and the torsion spring is sleeved on the second rotating shaft 31. One end of the torsion spring is fixed on the casing 10, and the other end is fixed. Fixed on the pawl 30, the torsion spring has a restoring force to the pawl 30, and when the device needs to be locked, a force is applied to the pawl 30 to rotate and insert into the slot When the device is not required to be locked, the force on the pawl 30 is removed, and the restoring force of the torsion spring against the pawl 30 drives the pawl 30 away from the ratchet wheel 24.

Further, referring to FIG. 1 and FIG. 2, in the present embodiment, the pawl 30 is bent near the ratchet 24 end to the ratchet 24, and the pawl 30 can be inserted deeper into the tooth groove, and the locking is more tight and locked. better result.

[0027] Further, the shape of the pawl 30 near the end of the ratchet wheel 24 is adapted to the tooth groove, the contact area of the pawl 30 and the helical tooth is increased, and the force of the pawl 30 on the ratchet 24 is greater, and the device is locked tighter. .

[0028] Further, referring to FIG. 1 and FIG. 2, in the embodiment, the pawl 30 is provided with a positioning hole 34, and one end of the locking wire 33 connected to the pawl 30 passes through the positioning hole 34 and the pawl. 30 is connected, and the positioning hole 34 is used to position the connection position of the locking wire 33 on the pawl 30 so that the locking wire 33 does not slide on the pawl 30, and the locking wire 33 drives the movement of the pawl 30 to be more stable. Preferably, the locking wire 33 is knotted at the end after passing through the positioning hole 34, and the fixing manner is simple in structure and easy to install.

[0029] Further, referring to FIG. 1 and FIG. 2, in the embodiment, the positioning hole 34 is located at one end of the pawl 30 near the second rotating shaft 31, and prevents the locking wire 33 from being too close to the ratchet 24 to be easily wound into the ratchet 24 in.

[0030] Further, referring to FIG. 1 and FIG. 2, in the embodiment, the first rotating shaft 20 is disposed in a central region of the casing 10, and is reserved for the coil spring 21, the reel 22, the cord 23, and the ratchet 24 The plurality of spaces rotate, the second rotating shaft 31 is disposed at a corner of the casing 10, and the pawl 30 connected thereto is also located at a corner of the casing 10, which saves the internal space of the casing 10.

[0031] Further, the second rotating shaft 31 is located at a corner of the casing 10, and the torsion spring is also located at a corner of the casing 10, and one end of the torsion spring is respectively fixed on the two sides of the casing 10 adjacent to the corner, so that In one case, the force of the torsion spring on the housing 10 is distributed on both sides, and the load on the side of the housing 10 is reduced to protect the housing 10.

[0032] Further, referring to FIG. 1 and FIG. 2, in the embodiment, the reel 22 is provided with a threaded hole 25, and the screw 26 is passed through the coil spring 21 and then screwed into the threaded hole 25, and the reel 22 is Fixed with the coil spring 21, this fixing method is simple in operation and structurally stable.

[0033] Further, referring to FIG. 1 and FIG. 2, in the embodiment, the anti-friction block 12 is disposed at the through hole 11, and the anti-friction block 12 is disposed around the through hole 11, and the inner surface of the anti-friction block 12 is processed. Smooth, reducing the friction between the strap 23 and the locking wire 33 passing therethrough, so that the movement of the strap 23 and the locking wire 33 is smoother.

[0034] Further, referring to FIG. 1 and FIG. 2, in the embodiment, on the housing 10 and the first rotating shaft 20 and the second The side surfaces of the rotating shaft 31 are connected with a plurality of supporting plates 13. Preferably, the supporting plates 13 are radially distributed around the first rotating shaft 20, and the supporting plate 13 can reduce the first rotating shaft 20 and the second rotating shaft 31 during the rotation. The force of the housing 10, the protective housing 10 is not easily damaged, and the vibration of the housing 10 can be reduced, so that the lockable reel device is stable during use.

[0035] Further, referring to FIG. 1 and FIG. 2, in the embodiment, the housing 10 is partially protruded outwardly to form a fixing seat 14, and the fixing seat 14 is provided with a fixing hole 15 for fixing the housing 10. When it is desired to mount the lockable reel device on other equipment, screws 26 can be passed through the fixing holes 15 to mount the mount 14 to the device.

[0036] Further, the fixing seat 14 is disposed near the second rotating shaft 31 for increasing the thickness of the part 10 of the housing, so that the two ends of the torsion spring have more space for fixing, and the fixing is also more fixed. stable.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, and improvements made within the spirit and scope of the present invention should be included in the present invention. Within the scope of protection.

Claims

Claim

The lockable reel device is characterized in that: a housing is provided, and a first rotating shaft is disposed in the housing, and the first rotating shaft outer fixing sleeve is provided with a reel for winding the cord, and is used for driving the reel a rotating coil spring and a ratchet disposed coaxially with the reel, the ratchet being fixedly coupled to the reel, the housing further comprising: a pawl for supporting the locking line and locking the ratchet, and supporting a second rotating shaft of the pawl and an elastic member for pushing the pawl out of the ratchet, and the casing is provided with a through hole through which the rope and the locking wire pass. A lockable reel device according to claim 1, wherein: said ratchet is sleeved on said reel.

The lockable reel device according to claim 1, wherein: the elastic member is a torsion spring, the torsion spring is sleeved on the second rotating shaft, and one end of the torsion spring is fixed to the The other end of the torsion spring is fixedly coupled to the pawl.

A lockable reel device according to claim 1, wherein: said pawl is bent toward said ratchet near an end of said ratchet.

A lockable reel device according to claim 1, wherein: said pawl upper jaw is provided with a positioning hole for engaging said lock line.

The lockable reel device according to claim 5, wherein: said positioning hole is located at an end of said pawl adjacent to said second rotating shaft.

The lockable reel device according to any one of claims 1 to 6, wherein: the first rotating shaft is disposed in a central area of the housing, and the second rotating shaft is disposed in the housing. at the corner.

The lockable reel device according to any one of claims 1 to 6, wherein: the reel is provided with a threaded hole, and a screw is inserted through the coil spring to be screwed into the threaded hole. The reel is fixed to the coil spring.

The lockable reel device according to any one of claims 1 to 6, wherein the through hole is provided with a friction reducing block.

The lockable reel device according to any one of claims 1 to 6, wherein: a side of the casing connected to the first rotating shaft and the second rotating shaft is provided with a plurality of supports Board.

The lockable reel device according to any one of claims 1 to 6, wherein: the housing partially protrudes outward to form a fixing seat, and the fixing seat is fixed for fixing a fixing hole of the housing.