CN210757708U - Ratchet wheel take-up device - Google Patents

Abstract

A ratchet take-up device comprises a hand wheel, a main shaft, a ratchet wheel, a pawl, a wheel rim and a tension spring, wherein the hand wheel is fixedly installed at the upper end of the main shaft, the ratchet wheel is located below the hand wheel and installed on the main shaft, an extended support shaft is fixed on the main shaft, the pawl is installed on the support shaft through the tension spring, the pawl is meshed with the ratchet wheel, the front end of the tension spring is connected with a lower leg plate, and the rear end of the tension spring is hooked on the support shaft; the wheel rim is fixed on the lower part of the main shaft, the left end of the lower leg binding band is fixedly connected with the wheel rim, and the right end of the lower leg binding band passes through the notch on the lower leg plate and is fixedly connected with the right side of the lower leg plate by bypassing the front side surface of the lower leg plate; the hand wheel is rotated to drive the main shaft and the wheel rim on the main shaft to rotate, the lower leg binding band can be wound on the wheel rim, so that the tightness of the lower leg binding band can be adjusted, and the pawl can be positioned by positioning the fulcrum shaft through the tension spring. The utility model provides a can stand and tie up tightly, conveniently dress, portable ratchet take-up.

Description

Ratchet wheel take-up device

Technical Field

The utility model relates to a ratchet take-up.

Background

In a mechanical design competition of the sixteenth college students in Zhejiang in 2019, the competition requires that students design and manufacture mechanical devices capable of improving the life quality of the old people according to the existing observation of the life of the old people. With the increasing aging progress of China's society, the aging population is also increasing. With the development of science and technology, some auxiliary wearable devices are increasing, but the binding device of these wearable devices has a fatal drawback, and the wearer need just can dress the device through bending over, and after the wearer wore the device, the action of bending over is difficult to accomplish, and ubiquitous waist vertebra disease among the old person, and such design has many adverse effects to health. With the continuous progress of society, the elderly also have higher requirements on the quality of their lives.

Disclosure of Invention

In order to overcome the defect that the wearing mode of the existing wearing equipment is clumsy and laboursome, the utility model provides a ratchet take-up device which can be tightly bound, conveniently worn and light.

The utility model provides a technical scheme that its technical problem adopted is:

a ratchet take-up device comprises a hand wheel, a main shaft, a ratchet wheel, a pawl, a wheel rim and a tension spring, wherein the upper end and the lower end of the main shaft are rotatably arranged on the rear side surface of a lower leg plate of an exoskeleton magic chair through a bearing seat; the wheel rim is fixed on the lower part of the main shaft, the left end of the lower leg binding band is fixedly connected with the wheel rim, and the right end of the lower leg binding band passes through the notch on the lower leg plate and is fixedly connected with the right side of the lower leg plate by bypassing the front side surface of the lower leg plate;

the hand wheel is rotated to drive the main shaft and the wheel rim on the main shaft to rotate, the lower leg binding band can be wound on the wheel rim, so that the tightness of the lower leg binding band can be adjusted, and the pawl can be positioned by positioning the fulcrum shaft through the tension spring.

The beneficial effects of the utility model are that:

1) the ratchet wheel take-up device is used for wearable equipment with a lower leg device, and when the equipment is worn, the equipment and the lower leg are tightly bound under the action of the take-up device;

2) the ratchet structure is used, so that the rubber belt can restrict the movement of the rubber belt and the main shaft after the equipment and the crus are tightly bound, and the equipment is always in a tight state;

3) by using the hand wheel, when a wearer stands, the hand wheel can be rotated to drive the shaft to tightly wind the rubber belt, so that the hand muscles of the old are exercised, and the injury to the lumbar of the old is reduced;

4) the utility model can be adapted to various wearable devices, thereby greatly facilitating the device wearers;

5) the utility model can be suitable for various people, and has strong adaptability;

6) simple structure, obvious effect and low cost, and can be widely popularized.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the assembly of the ratchet and pawl.

Fig. 3 is a schematic view of the connection between the rim and the lower leg strap.

Fig. 4 is a schematic view of the connection between the tension spring and the spindle.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 4, a ratchet take-up device comprises a hand wheel 1, a main shaft 8, a ratchet 2, a pawl 5, a rim 10 and a tension spring 3, wherein the upper end and the lower end of the main shaft 8 are rotatably mounted on the rear side surface of a lower leg plate of an exoskeleton magic chair through a bearing seat, the hand wheel 1 is fixedly mounted at the upper end of the main shaft 8, the ratchet 2 is positioned below the hand wheel and mounted on the main shaft 8, an extended fulcrum shaft is fixed on the main shaft 8, the pawl 5 is mounted on the fulcrum shaft through the tension spring 4, the pawl 5 is meshed with the ratchet 2, the front end of the tension spring 3 is connected with the lower leg plate, and the rear end of the tension spring 3 is hooked on the fulcrum shaft; the rim 10 is fixed on the lower part of the main shaft 8, the left end of the lower leg binding band is fixedly connected with the rim 10, and the right end of the lower leg binding band passes through the notch on the lower leg plate and is fixedly connected with the right side of the lower leg plate by bypassing the front side surface of the lower leg plate;

the hand wheel 1 is rotated to drive the main shaft 8 and the rim 10 thereon to rotate, the lower leg binding belt can be wound on the rim 10, so that the tightness of the lower leg binding belt can be adjusted, the fulcrum shaft is positioned through the tension spring 3, and the pawl 5 is positioned.

The utility model discloses a theory of operation does: the principle of the ratchet wheel take-up device is simple, and the principle of the ratchet wheel take-up device is the same as the principle of winding and tightening a cable. The equipment wearing person realizes through rotating the hand wheel with put the extension spring that the ligature of equipment and human shank is tight and loosen, simple structure, easy to operate, safe comfortable, rotatable block at any time, be fit for the equipment wearing person of shank thickness difference, ensure that every wearing person can both with equip zonulae occludens, therefore adaptability is very strong. The ratchet wheel take-up device can be mounted on various wearable devices, and achieves multiple purposes. The equipment wearing person uses this device can tie up leg device and shank under the state of standing, has liberated equipment wearing person, brings unnecessary injury to lumbar vertebrae portion when having avoided wearing equipment. The power is provided by human, and unnecessary weight brought by the energy part is reduced. Compared with other similar devices, the ratchet wheel wire take-up device is simple in use mode and easy to operate, has a special protection function for the wearer with pain in the lumbar vertebra, and prevents secondary pain from being caused to the wearer when the device is worn.

As shown in fig. 1, the ratchet 2 is connected with the main shaft 8 through a key, the support shaft is located above the bearing seat 6, the pawl 5 is rotatably connected with the support shaft, the pawl 5 is clamped on the ratchet 2 through the pressure spring 4, one end of the pressure spring 4 is connected with the support shaft extending outwards, the other end presses the pawl 5, the pawl 5 is prevented from rotating with the support shaft in the rotation process of the ratchet 2 and cannot be tightened, one end of the tension spring 3 is fixedly connected with the lower leg plate, the other end of the tension spring 3 is clamped on the support shaft and can be manually pulled out, the pawl 5 is rotated, the limit of the pawl 5 on the ratchet 2 is released, and the lower leg binding band is loosened. One end of a rubber belt 9 is fixed on one side of the lower leg plate, the other end of the rubber belt passes through a notch on the other side of the lower leg plate and then is wound on the wheel rim 10, the wheel rim 10 is connected with the main shaft 8 through a key and rotates along with the main shaft 8, the upper end of the main shaft 8 passes through a bearing, and the bearing is supported through a bearing seat fixed on the lower leg plate; the hand wheel 1 is also connected with the main shaft 8 through a key, so that the main shaft 8 can rotate along with the hand wheel 1. The main shaft 8 penetrates through two bearings, the bearings play a role in reducing friction, the two bearings are respectively installed on the two bearing seats 6 and 11, the two bearing seats 6 and 11 are fixed on the lower leg plate through screw connection, the centers of the two bearing seats are positioned on the same vertical line, and a hole of the lower end bearing seat facing the ground is closed, so that the main shaft 8 does not completely penetrate through the bearing seats 11, and the main shaft 8 is supported. The winding of rubber tape 9 is in on the wheel rim 10, after winding, rubber tape 9 can follow the motion of wheel rim 10, extension spring 3 does not play a role when ratchet take-up realizes tying up the function, when will lift equipment off, extension spring 3 just plays a role.

The tight mechanism of twining includes rubber tape 9 and wheel rim 10, is the utility model discloses an operation end drives the rotation of wheel rim 10 and the tight function of rubber tape 9 winding completion through main shaft 8, and the elasticity of rubber tape is controlled by equipment wearer completely, and the winding number of turns that can change the rubber tape to the people of difference reaches the effect of tying up tightly, has strengthened the adaptability of device to operational environment greatly.

Ratchet includes ratchet and pawl, is the utility model discloses a work end restricts the one-way rotation of main shaft 8 through ratchet 2, extension spring 3, pressure spring 4, pawl 5 to indirect restriction twines tight mechanism, ratchet can let main shaft 8 only can one-way rotation when main shaft 8 rotates, has alleviateed the elastic force that the rubber tape 9 produced because of will resumeing deformation, and after the 8 stall of main shaft, this ratchet lets twine tight mechanism and is in this state all the time, simply but also practical.

Main shaft 8 is connected the utility model discloses the bridge of work end and operation end, the utility model discloses strive for to simplify equipment dresses' action and reduce the injury to dresses lumbar vertebrae portion, liberation equipment dresses so utilize main shaft 8 to link together control end hand wheel 1 with twine tight mechanism, utilize main shaft 8 to rise the control end to the height that can operate when the people stands like this, tighten equipment and lower leg when letting equipment dresses can stand, simply be practical again.

Ratchet is as shown in fig. 3, the utility model is suitable for a wearing of equipment, in order to reduce rubber tape 8 and will resume the elastic force that deformation produced, make things convenient for equipment wearers to realize its function with less power, ratchet is equipped with on upper portion in the main shaft 8, but equipment wearers directly selects hand wheel 1 when using and realizes the device function, ratchet restricts the one-way motion of main shaft 8, after the degree of twining satisfies the requirement simultaneously, ratchet makes this state can keep. When the device is to be dismounted, only the tension spring 3 originally clamped and issued by the pawl 5 needs to be released, the tension spring 3 is originally in a stretching state and needs to restore to deform, so that the pawl 5 is driven to rotate to other directions, the main shaft 8 is not limited by the pawl 5 and is automatically loosened, and the purpose of loosening and dismounting is achieved.

The tight mechanism of twining is shown in fig. 4, the utility model discloses the purpose is for the people of the wearing equipment of convenience difference, in order to satisfy different people's demand, the tight mechanism of twining adopts the tight of ligature that leg device and shank are realized down to rubber tape 9, main shaft 8 drives wheel rim 10 and rotates, wheel rim 10 rotates the winding that makes 9 rounds of rubber tape round on wheel rim 10, reach the tight effect of ligature, different people can be according to the winding number of turns difference control elasticity degree that hand wheel number of turns is promptly, 9 relative softly in rubber tape simultaneously, what bring for the wearing person is comfortable sensation.

The utility model discloses do not need the drive of electric power and motor, when the condition just utilizes electric drive, the degree of twining tightly is very difficult control, very easily takes place the tight condition of rubber tape winding, leads to bringing discomfort for equipment wearers, and this device utilizes manual drive, and the elasticity degree of rubber tape is completely by human control, and humanized design has realized promptly like this that equipment can not bring the discomfort for the dressers again with the purpose of lower leg tie-up.

The utility model discloses a working process does: during wearing equipment, stretch into the foot after the equipment, mode through hand wheel 1, hand wheel 1 rotates and drives main shaft 8 and rotate, main shaft 8 drives wheel rim 10 and rotates, wheel rim 10 rotates the winding with 9 rounds of rubber tape on wheel rim 9, pawl 5 lets ratchet 3 can only toward one direction motion, main shaft 8 can only the folk prescription rotate promptly, think that the elasticity degree is fit for the back when equipment dresses, loosen hand wheel 1, ratchet 3 is blocked by pawl 5, main shaft 8 can not rotate, rubber tape 9 is in this state always, reach the device and the purpose that the shank was tightened, it does not produce adverse effect to it to tighten in-process ratchet. When the equipment is to be dismounted, the tension spring 3 clamped on the fulcrum shaft is released, the pawl 5 is broken off in the contraction process of the tension spring 3 due to the elastic force generated by the contraction and recovery deformation of the tension spring 3, the ratchet 2 is not bound by the pawl 5, the ratchet does not influence the motion of the main shaft any more, namely, the main shaft 8 is not restrained by rotation only in one direction, the main shaft 8 is driven to rotate by the elastic force generated by the recovery deformation of the rubber belt 9, and the rubber belt 9 winds out of the rim 10 for one circle in the rotation process, so that the purpose of dismounting is achieved. The mechanism can prevent the old people who generally have lumbar vertebra problems from bending down and tying the equipment like tying shoelaces, but the main shaft 8 is used for placing the part needing artificial participation to a high place, so that when a user needs to tie the equipment and the user, the equipment can be worn and finished in a standing state. Is convenient and protects the old wearers.

The utility model discloses regard the hand wheel as the control that realizes the action, equipment wearers only need through rotating the hand wheel, and the hand wheel drives the main shaft and rotates, and the main shaft rotates and twines the rubber area tightly, reaches the effect that equipment and people tied up tightly, and in-process ratchet plays and prevents the main shaft reversal and keep the effect that the rubber area tied up the state tightly, does not need equipment wearers to bend down and ties up equipment and self tightly. Tightening the device is facilitated by turning the hand wheel.

The utility model discloses lie in assisting equipment wearers to tie up lower leg equipment with self, realize that the process is accomplished by equipment wearers self, do not need extra energy input, saved the resource greatly, avoided unnecessary troublesome, protected lumbar vertebrae portion to have the sick person of wearing.

The above embodiments are merely preferred embodiments of the present disclosure, which are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present disclosure, should be included in the scope of the present disclosure.

Claims (1)

1. A ratchet take-up device is characterized in that: the exoskeleton magic chair comprises a hand wheel, a main shaft, a ratchet wheel, a pawl, a wheel ring and a tension spring, wherein the upper end and the lower end of the main shaft are rotatably arranged on the rear side surface of a lower leg plate of the exoskeleton magic chair through a bearing seat; the wheel rim is fixed on the lower part of the main shaft, the left end of the lower leg binding band is fixedly connected with the wheel rim, and the right end of the lower leg binding band passes through the notch on the lower leg plate and is fixedly connected with the right side of the lower leg plate by bypassing the front side surface of the lower leg plate;

the hand wheel is rotated to drive the main shaft and the wheel rim on the main shaft to rotate, the lower leg binding band can be wound on the wheel rim, so that the tightness of the lower leg binding band can be adjusted, and the pawl can be positioned by positioning the fulcrum shaft through the tension spring.

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