CN107928987B

CN107928987B - Holding mechanism of wrist joint rehabilitation training device

Info

Publication number: CN107928987B
Application number: CN201711287811.4A
Authority: CN
Inventors: 徐东; 徐晗; 张明明; 李益斌; 李晓龙; 谢胜泉
Original assignee: Tongji Zhejiang College
Current assignee: Tongji Zhejiang College
Priority date: 2017-12-07
Filing date: 2017-12-07
Publication date: 2024-02-23
Anticipated expiration: 2037-12-07
Also published as: CN107928987A

Abstract

The invention discloses a holding mechanism of a wrist joint rehabilitation training device, which comprises a base and is characterized in that: the utility model discloses a wrist joint rehabilitation training device, including base, including the base, be equipped with the aircraft nose subassembly on the base, the aircraft nose subassembly is including holding subassembly and drive assembly, drive assembly is connected with mechanical output's power shaft, the power shaft is connected hold the subassembly, it comprises holding pole and angle adjustment device to hold the subassembly, angle adjustment device is adjustable to hold the angle of pole, angle adjustment device contains solid fixed ring, links firmly spacing ring and rotatable setting up the adjusting ring between solid fixed ring and spacing ring in solid fixed ring one side, angle adjustment device still contains positioner, positioner can fix a position the adjusting ring and prevent its rotation, and it can diversified help rehabilitation person carries out the training of wrist joint, makes its wrist joint's function obtain comprehensive rehabilitation training, helps rehabilitation person better recovery wrist joint function.

Description

Holding mechanism of wrist joint rehabilitation training device

Technical Field

The invention belongs to the technical field of medical equipment, and particularly relates to a holding mechanism of a wrist joint rehabilitation training device.

Background

The existing wrist joint rehabilitation training device can only train wrist palm or dorsum manus flexion and extension, the training degree of freedom is single, the wrist joint adduction/abduction degree of freedom cannot be trained, the rehabilitation speed of a patient is influenced, for the rehabilitation of the wrist joint, the wrist belongs to a multi-degree-of-freedom movable joint, and only training a certain direction is unfavorable for the comprehensive rehabilitation of the wrist joint.

The hand of the hemiplegia patient is gripped at a certain inclination angle, but the gripping tool of the existing wrist joint training device is horizontally arranged, the fact that the hand of a part of patients cannot keep the horizontal state of a normal person is not considered, the hand of the patient is at a certain inclination angle, the gripping tool is easy to loosen and fall off when the hand of the hemiplegia patient is gripped at the horizontal gripping tool, the rehabilitation training effect is affected, and even the wrist joint is damaged.

In addition, fingers of hemiplegia patients often deform and present different bending and stretching, so that a gripping tool suitable for being gripped by patients is required to be selected according to the finger shapes of different patients, but the existing wrist joint rehabilitation training device does not have the function of selecting a corresponding suitable gripping tool according to the finger shapes of the patients, and cannot meet the requirements of different hand types of different patients, so that the phenomena of loosening, falling off and the like of the hands and the gripping tools of the patients during rehabilitation training can be caused, the rehabilitation effect can be influenced, and even extra damage can be brought; of course, a problem is how to replace the holding tool conveniently and quickly, so as to reduce the workload of medical staff, and the holding tool after installation needs to be firm and stable, so that a device capable of being disassembled and assembled quickly is needed to be replaced conveniently and quickly.

Disclosure of Invention

The invention aims to provide a holding mechanism of a wrist joint rehabilitation training device, which can help a rehabilitation person to train wrist joints in multiple directions, so that the function of the wrist joints of the rehabilitation person can be comprehensively rehabilitation trained, the rehabilitation person can be helped to better recover the function of the wrist joints, the hand shape of the patient can be better adapted, and the rehabilitation effect of the patient can be obviously improved.

In order to solve the technical problems, the aim of the invention is realized as follows:

the utility model provides a wrist joint rehabilitation training device's mechanism of gripping, includes base, its characterized in that: the machine head assembly comprises a holding assembly and a driving assembly, wherein the driving assembly is connected with a power shaft for mechanical output, the power shaft is connected with the holding assembly, the holding assembly comprises a holding rod and an angle adjusting device, the angle of the holding rod can be adjusted by the angle adjusting device, the angle adjusting device comprises a fixed ring, a limiting ring fixedly connected to one side of the fixed ring and an adjusting ring rotatably arranged between the fixed ring and the limiting ring, and the angle adjusting device further comprises a positioning device which can position the adjusting ring to prevent the adjusting ring from rotating.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the adjusting ring is provided with a quick assembly disassembly component, and the holding tool is detachably arranged on the quick assembly disassembly component.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the fixed ring is provided with a ring groove for receiving the adjusting ring, the adjusting ring is embedded into the ring groove, and the limiting ring is arranged on the outer side of the adjusting ring to limit the adjusting ring to move out of the ring groove.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: continuous bulges are uniformly distributed on the peripheral surface of the adjusting ring, and the positioning device comprises positioning rods which are clamped between two adjacent bulges.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the positioning rod is provided with a groove with a size slightly larger than that of the tooth-shaped bulge, when the positioning rod is moved to enable the groove to be opposite to the tooth-shaped bulge, the tooth-shaped bulge can pass through the groove, the fixing ring and the limiting ring are respectively provided with a mounting hole and a limiting hole corresponding to the positioning rod, and the positioning rod can only move in the mounting hole and the limiting hole.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the mounting hole is internally provided with a pressure spring which is used for propping the groove away from the position opposite to the tooth-shaped bulge.

Compared with the prior art, the invention has the following outstanding and beneficial technical effects: the design of the adjusting ring realizes the switching of two degrees of freedom (abduction/adduction degrees of freedom and palmar flexion/dorsiflexion degrees of freedom) of the wrist joint, the angle adjusting mechanism is used for adjusting the angle of the holding tool, when the adjusting angle is 90 degrees, the horizontally arranged holding tool is adjusted to the abduction/adduction degrees of freedom for movement, the switching of the two degrees of freedom is realized, and at present, the wrist joint training equipment with two degrees of freedom needs two actuators (such as two motors), and compared with the wrist joint training equipment with the two degrees of freedom, the wrist joint training device has fewer parts and more simplified structure; aiming at the problem that the inclination angle exists on the hands of partial patients, the rehabilitation training requirements of the patients can be met through the adjustment of any angle.

And the holding tool of the holding mechanism is installed by adopting the quick assembly disassembly component, so that the corresponding holding tool is convenient and quick to replace for different patients.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic diagram of a grip assembly architecture.

Fig. 3 is a schematic view of the adjusting ring structure.

Fig. 4 is a schematic view of a positioning device.

Fig. 5 is a schematic diagram of the internal structure of the quick release assembly.

Fig. 6 is a schematic diagram of a quick release assembly.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, based on the examples given, which a person of ordinary skill in the art would obtain without undue burden, are within the scope of protection of the present application.

In the description of the present application, it should be understood that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application.

In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

The holding mechanism of the wrist joint rehabilitation training device, see fig. 1, comprises a base 200, wherein a holding component and a driving component 300 are arranged on the base 200, the driving component 300 is connected with a power shaft 380 with mechanical output, the power shaft 380 is connected with the holding component, and the holding component 400 consists of a holding rod 600 and an angle adjusting device 400.

Specifically, referring to fig. 2-3, the angle adjusting device 400 can adjust the angle of the grip lever 600, and the angle adjusting device 400 includes a fixing ring 420, a limiting ring 410 fixedly connected to one side of the fixing ring, and an adjusting ring 430 rotatably disposed between the fixing ring 420 and the limiting ring 410.

Preferably, the fixing ring 420 is provided with a ring groove 422 for receiving the adjusting ring, the adjusting ring 430 is embedded in the ring groove 422, and the limiting ring 410 is mounted on the outer side of the adjusting ring 430 to limit the adjusting ring 430 to move out of the ring groove 422.

Further, as shown in fig. 4, the angle adjusting device further includes a positioning device 440, and the positioning device 440 can position the adjusting ring 430 to prevent rotation.

Specifically, the outer peripheral surface of the adjusting ring 430 is provided with continuous tooth-shaped protrusions 431, and the positioning device 440 includes a positioning rod 442, where the positioning rod 442 is clamped between two adjacent tooth-shaped protrusions 431.

The positioning rod 442 is provided with a groove 4421 slightly larger than the tooth-shaped protrusion, when the positioning rod 442 is moved to enable the groove 4421 to be opposite to the tooth-shaped protrusion 431, the tooth-shaped protrusion 431 can pass through the groove 4421, so that the adjusting ring 430 can be rotated, the fixing ring 420 and the limiting ring 410 are respectively provided with a mounting hole 421 and a limiting hole 411 corresponding to the positioning rod 442, and the positioning rod 442 can only move in the mounting hole 421 and the limiting hole 411.

The mounting hole 421 is internally provided with a pressure spring 443 which normally pushes the groove 4421 away from the position opposite to the tooth-shaped protrusion 431, one end of the positioning rod 442 is provided with a pressure spring fixing seat 4422, the other end of the positioning rod 442 is fixedly connected with a pressing block 441, the pressing block 441 is pressed down to move the groove 4421 to the position opposite to the tooth-shaped protrusion 431, the adjusting ring 430 is rotated to adjust the angle, the pressing block 441 is released, the groove 4421 is moved out of the position opposite to the tooth-shaped protrusion 431, and the positioning rod 442 is clamped between the two adjacent tooth-shaped protrusions 431 again under the elastic force of the pressure spring 443 to position the adjusting ring 430 so as to be unable to rotate.

Further, the adjusting ring 430 is provided with a grip rod connection portion 431, the grip rod connection portion 431 is provided with a quick release assembly 700, and the grip rod 600 is clamped in the quick release assembly 700.

Specifically, referring to fig. 5-6, the quick release assembly 700 includes a fixing base 710, a sliding fork 720, a locking pawl 730, and a cover plate 760, the fixing base is provided with a pawl rotating shaft 770, a cavity 780 for accommodating the sliding fork 720 and the locking pawl 730, the cavity 780 includes a sliding rail for sliding the sliding fork 720, a fork pressure spring 750 is disposed in the sliding rail, the sliding fork 720 is always far away from the fork pressure spring 750, the locking pawl 730 is in a semicircular ring structure, a holding rod 600 is embedded in the semicircular ring, a rotating shaft hole 732 matched with the pawl rotating shaft 770 is disposed on the locking pawl 730, a torsion spring 740 for rotating the locking pawl 730 towards the opening 711 is mounted on the pawl rotating shaft 770, a clamping portion 731 is disposed at one end of the locking pawl 730, a bayonet 721 is disposed on the sliding fork 720, the clamping portion 731 is clamped on the bayonet 721, and the locking pawl 730 is prevented from rotating under the action of the torsion spring.

In the specific disassembly and assembly process, in the disassembly step, the holding rod 600 is clamped by the stop pawl 730, the shifting fork 720 (the dotted line position) is slid rightward (in the arrow direction), the bayonet 721 is separated from the clamping part 731, the stop pawl 730 rotates towards the opening 711 under the action of the torsion spring 740, and the sliding shifting fork 720 is sprung to the initial position by the shifting fork pressure spring 750, so that the holding rod 600 is exposed to the opening 711 (the dotted line position), and the holding rod 600 can be conveniently disassembled from the quick disassembly assembly.

The mounting step is opposite to the dismounting step, the holding rod 600 is pressed in from the opening 711, the torsion force of the torsion spring 740 is overcome, and the stopping pawl 730 is reversely rotated until the clamping part 731 is clamped by the bayonet 721, and the mounting of the holding rod 600 is completed.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention in this way, therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.

Claims

1. The utility model provides a wrist joint rehabilitation training device's mechanism of gripping, includes base, its characterized in that: the base is provided with a holding assembly and a driving assembly, the driving assembly is connected with a power shaft for mechanical output, the power shaft is connected with the holding assembly, the holding assembly is composed of a holding rod and an angle adjusting device, the angle of the holding rod can be adjusted by the angle adjusting device, the angle adjusting device comprises a fixed ring and an adjusting ring movably connected to the fixed ring, the adjusting ring is coaxial with the fixed ring and can rotate around the shaft, and the angle adjusting device also comprises a positioning device which can position the adjusting ring to prevent the adjusting ring from rotating;

the adjusting ring is provided with a quick-dismantling assembly, and the holding rod is detachably arranged on the quick-dismantling assembly;

the adjusting ring is provided with a holding rod connecting part, the holding rod connecting part is provided with a quick-release assembly, and the holding rod is clamped in the quick-release assembly; the quick-release assembly comprises a fixed seat, a sliding shifting fork, a stopping pawl and a cover plate, wherein the fixed seat is provided with a pawl rotating shaft, a cavity for accommodating the sliding shifting fork and the stopping pawl, the cavity comprises a sliding rail for the sliding shifting fork to slide, a shifting fork pressure spring is arranged in the sliding rail, the sliding shifting fork pressure spring pushes the sliding shifting fork to the direction far away from the shifting fork pressure spring, the stopping pawl is of a semicircular ring structure, a holding rod is embedded in the semicircular ring, a rotating shaft hole matched with the pawl rotating shaft is formed in the stopping pawl, a torsion spring for rotating the stopping pawl towards an opening side is arranged on the pawl rotating shaft, one end of the stopping pawl is provided with a clamping part, the sliding shifting fork is provided with a bayonet, and the clamping part is clamped on the bayonet to prevent the stopping pawl from rotating under the acting force of the torsion spring;

the fixed ring is provided with a ring groove for receiving the adjusting ring, and the adjusting ring is embedded in the ring groove;

continuous tooth-shaped protrusions are uniformly distributed on the peripheral surface of the adjusting ring, and the positioning device comprises positioning rods which are clamped between two adjacent tooth-shaped protrusions;

the positioning rod is provided with a groove with a size slightly larger than that of the tooth-shaped bulge, when the positioning rod is moved to enable the groove to be opposite to the tooth-shaped bulge, the tooth-shaped bulge can pass through the groove, the fixing ring and the limiting ring are respectively provided with a mounting hole and a limiting hole corresponding to the positioning rod, and the positioning rod can only move in the mounting hole and the limiting hole;

a pressure spring is arranged in the mounting hole, and the pressure spring pushes the groove to a direction far away from the tooth-shaped bulge.