Tensioner with damping low-speed recovery device

Abstract

The utility model discloses a tensioner capable of realizing automatic recovery of a braid and realizing low-speed recovery, which is novel in appearance and function, is provided with a ratchet wheel, a handle, a main shaft, a base, a volute spiral spring, a damping speed reducer and the like, and mainly solves the problems that the recovery speed of a common tensioner cannot be controlled, and the recovery speed is low. Sometimes, the braid and the hook can hurt a user for rapid recovery. Under the action of the damping speed reducer, the tensioner can slow down the recovery speed of the braid, so that a user is safer. Therefore, by means of the design, goods can be bound quickly and conveniently without affecting normal use of the automatic tensioner, meanwhile, operation of the tensioner is safer and more orderly, loading and unloading efficiency of the goods is improved, and loading and unloading of the goods are simpler and safer.

Description

Technical Field

[0001] The utility model relates to the field of tensioners, in particular to an automatic tape retracting tensioner. Background Art

[0002] With the development of the transportation industry nowadays, the emergence of the automatic tensioner product has brought advantages such as not falling off after locking, being safe and reliable, lightweight, easy to operate, and protecting objects from being damaged by shaking.

[0003] Most of the current automatic retractors use a coil spring to provide power. However, for a webbing line that is often 2m long, the coil spring needs to have sufficient power to retract it. At the beginning, the retraction speed will be very high. Due to inertia, the hook at the front of the webbing will hit the user because of inertia, which is extremely unsafe. Summary of the Invention

[0004] The purpose of the utility model is to provide a tensioner with a damping slow retraction device to solve the above-mentioned deficiencies of the prior art. This is a tensioner with a damping slow retraction device that adds a damping retraction device on the basis of being easy to operate, labor-saving, simple and convenient to use.

[0005] The technical problem of the utility model is realized through the following technical solutions:

[0006] To realize this tensioner with a damping slow retraction device, it includes a tensioner for automatically retracting the webbing as the main body, and a damping device is arranged on one side of the tensioner for automatically retracting the webbing. The damping device is designed as brake beans, track one, base one, and a damping box. The brake beans are hollow tubes, and track one passes through the hollow tubes to limit the movement of the brake beans. Track one is connected to base one, so that the brake beans can only move reciprocally along the central axis of track one.

[0007] The tensioner with a damping slow retraction device is characterized in that when the tensioner is in the non-working state, the brake beans will be on the inner side and will not affect the damping box; when the tensioner is in the retraction state, the brake beans will be thrown out due to centrifugal force, and at this time, the brake beans will slow down by rubbing against the inner wall of the damping box. By controlling the number or weight of the brake beans, the force exerted on the damping box by the brake beans thrown out by centrifugal force when the tensioner is in the retraction state can be changed, so as to control the maximum retraction speed of the tensioner.

[0008] The described tensioner with a damping slow recovery device is characterized in that when the tensioner is in an idle state, the brake blocks are on the inner side and do not affect the damping box; when the tensioner is in the recovery state, the brake blocks are thrown out due to centrifugal force, and at this time, the brake blocks slow down by rubbing against the inner wall of the damping box. By controlling the number or weight of the brake blocks, the force exerted by the brake blocks thrown out by centrifugal force on the damping box can be changed when the tensioner is in the recovery state, so as to control the maximum recovery speed of the tensioner. When the speed is lower than the predetermined speed, the spring retracts the brake blocks due to elastic force, making the brake ineffective.

[0009] The described tensioner with a damping slow recovery device is characterized in that it is directly connected to the central axis through a design of a circular shape with a flattened part to achieve synchronous rotation, and is completely fixed to the tensioner through the damping box and rivets.

[0010] The described tensioner with a damping slow recovery device is characterized in that there is no upper limit on the number of the brake beans and brake blocks, but the lower limit is at least 2. The above-mentioned brake beans and brake blocks do not touch the tops of the base one, base two and the damping box, and move on the track, enabling them to respond quickly and reducing unnecessary frictional energy loss.

[0011] Compared with the prior art, this tensioner with a damping slow recovery device has a safety design. This design makes the originally uncontrollable spring recovery system have a controllable speed, ensuring the safety of the user during operation and preventing injury. The overall structure is simple, the operation is simple, the use is convenient and safe, which can effectively improve the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a side view of the present utility model.

[0013] Figure 2 It is the side view of the present utility model with the damping box removed.

[0014] Figure 3 It is a schematic diagram of the damping structure of the present utility model.

[0015] Figure 4 It is a schematic diagram of the connection port of the present utility model.

[0016] Figure 5 It is the first demonstration of the damping device of the present utility model.

[0017] Figure 6 It is the second demonstration of the damping device of the present utility model.

[0018] In the figure: 1. Tightener, 2. Damping device, 21. Damping box, 22. Spring box, 3. First base, 31. First track, 32. Brake bean, 4. Central axis, 41. Spring, 42. Second base, 43. Second track, 44. Brake block, 5. Rivet. Detailed implementation mode

[0019] The embodiments of the present utility model will be further described in detail below with reference to the above-mentioned drawings.

[0020] As Figure 1-6 shown, it is a tightener with a damping slow recovery device, which adds a safety damping and deceleration device on the basis of the original automatic tightener. Its structure is mainly composed of a tightener 1, a damping box 2, a first track 31 and other structures.

[0021] The tightener 1 as Figure 1 shown is an automatic webbing recovery tightener, which is powered by a volute spring to achieve automatic recovery; and the locking force is provided by a ratchet, a lock piece and a retaining piece to achieve locking and fixing of goods.

[0022] The first scheme of the damping device 2 is as Figure 3 and Figure 5 shown, and it is composed of a spring box 22 and a braking device. The first scheme of the braking device is: composed of a first base 3, a first track 31 and a brake bean 32. When the tightener 1 is in an idle state, the brake bean 32 will be on the inner side and will not affect the damping box 21; when the tightener 1 is in the recovery state, the brake bean 32 will be thrown out due to centrifugal force. At this time, the brake bean 32 will decelerate by frictional contact with the inner wall of the damping box 21. By controlling the number or weight of the brake beans 32, the force exerted by the brake beans 32 thrown out by the centrifugal force on the damping box 21 when the tightener 1 is in the recovery state can be changed, so as to control the maximum recovery speed of the tightener.

[0023] The second scheme of the damping device 2 is as Figure 6 shown. The second scheme of the braking device is: composed of a spring 41, a second base 42, a second track 43 and a brake block 44. When the tightener 1 is in an idle state, the brake block 44 will be on the inner side and will not affect the damping box 21; when the tightener 1 is in the recovery state, the brake block 44 will be thrown out due to centrifugal force. At this time, the brake block 44 will decelerate by frictional contact with the inner wall of the damping box 21. By controlling the number or weight of the brake blocks, the force exerted by the brake blocks 44 thrown out by the centrifugal force on the damping box 21 when the tightener 1 is in the recovery state can be changed, so as to control the maximum recovery speed of the tightener 1. When the speed is lower than the predetermined speed, the spring 41 will retract the brake block 44 due to its elastic force, making the brake ineffective.

[0024] The damping device 2 is as follows Figure 4 shown. The boss on the central shaft 4 is matched with the same notch on the base to achieve synchronous rotation and transmit power. Then, the damping box 21 covers the braking device to fix it. At the same time, there are rivets 5 to fix the damping box 21 on the tensioner 1, forming a complete tensioner with a damping slow recovery device.

[0025] A tensioner with a damping slow recovery device obtained through this embodiment

[0026] , when the webbing is recovered, it is simple, easy to operate and safe, ensuring the safety of the user during operation and preventing injury. The overall structure is simple, the operation is simple, convenient and safe, which can effectively improve the market competitiveness of the product.

Claims

1. A tensioner with a damping slow recovery device, comprising a tensioner (1) for automatically recovering a webbing as a main body, a damping device (2) being arranged on one side of the tensioner for automatically recovering a webbing, the damping device being designed as a brake bean (32), a track (31), a base (3) and a damping box (21), the brake bean being a hollow tube, the track passing through the hollow tube to limit the movement of the brake bean, the track being connected to the base so that the brake bean can only reciprocate along the central axis of the track.

2. The tensioner with a damping slow recovery device according to claim 1, characterized in that: The damping device (2) is such that when the tensioner (1) is in a non-working state, the brake beans (32) are located on the inner side and have no effect on the damping box (21); when the tensioner is in a recovery state, the brake beans are thrown out due to centrifugal force. At this time, the brake beans decelerate by rubbing against the inner wall of the damping box. By controlling the number or weight of the brake beans, the force exerted on the damping box by the brake beans thrown out by centrifugal force when the tensioner is in a recovery state can be changed, thereby achieving the maximum speed of controlling the recovery of the tensioner.

3. The tensioner with a damping slow recovery device according to claim 1, characterized in that: The damping device (2) is such that when the tensioner (1) is in a non-working state, the brake block (44) is located on the inner side and has no effect on the damping box (21); when the tensioner is in a recovery state, the brake block is thrown out due to centrifugal force. At this time, the brake block decelerates by rubbing against the inner wall of the damping box. By controlling the number or weight of the brake block, the force exerted on the damping box by the brake block thrown out by centrifugal force when the tensioner is in a recovery state can be changed, thereby achieving the maximum speed of controlling the recovery of the tensioner. When the speed is lower than a predetermined speed, the spring (41) retracts the brake block due to elastic force, rendering the brake ineffective.

4. The tensioner with a damping slow recovery device according to claim 1, characterized in that: The damping device (2) is directly connected to the central axis (4) through a circular flattened design to achieve synchronous rotation, and is completely fixed to the tensioner (1) through a damping box (21) and rivets (5).

5. The tensioner with a damping slow recovery device according to claim 1, characterized in that: The damping device (2) includes brake beans (32) and brake blocks (44) with no upper limit in number, but a minimum of two in number. The brake beans and brake blocks do not contact the base one (3), the base two (42) and the top of the damping box (21), and move on the track, so that they can react quickly and reduce unnecessary friction energy loss.

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