阅读说明：本技术 一种用于椅子的摇手轴 (Hand crank shaft for chair ) 是由 林士涵 朱红梅 于 2020-07-13 设计创作，主要内容包括：本发明公开了一种用于椅子的摇手轴,包括摇手轴主体,摇手轴主体由手持部、驱动部以及连接手持部与驱动部的连接部构成,摇手轴主体上设置有臂力训练机构,臂力训练机构由施力机构和力度调节机构组成,施力机构设置于手持部上,施力机构上还设置有用于限位施力机构的锁止机构,力度调节机构设置于驱动部上,驱动部的端部设有限位机构,施力机构和力度调节机构经连接板连接。本发明通过设有的臂力训练机构可以在使用摇手轴驱动按摩结构进行按摩背部的同时训练臂力,解决了现有技术中摇手轴功能单一的问题,实用性高；通过设有的限位机构实现了摇手轴主体的可拆分形式,进而使用握力训练机构可以实现握力的训练,进一步增强摇手轴的实用性。(The invention discloses a hand cranking shaft for a chair, which comprises a hand cranking shaft main body, wherein the hand cranking shaft main body is composed of a hand-held part, a driving part and a connecting part for connecting the hand-held part and the driving part, an arm force training mechanism is arranged on the hand cranking shaft main body and consists of a force application mechanism and a force adjusting mechanism, the force application mechanism is arranged on the hand-held part, a locking mechanism for limiting the force application mechanism is also arranged on the force application mechanism, the force adjusting mechanism is arranged on the driving part, a limiting mechanism is arranged at the end part of the driving part, and the force application mechanism and the force adjusting mechanism are connected through a connecting plate. The arm strength training mechanism can be used for training the arm strength while massaging the back by using the hand crank shaft to drive the massage structure, so that the problem of single function of the hand crank shaft in the prior art is solved, and the practicability is high; but the split form of hand cranking shaft main part has been realized through the stop gear who is equipped with, and then uses grip training mechanism can realize the training of grip, further strengthens hand cranking shaft's practicality.)

1. The utility model provides a hand cranking shaft for chair, includes hand cranking shaft main part (1), hand cranking shaft main part (1) comprises handheld portion, drive division and the connecting portion of connecting handheld portion and drive division, a serial communication port, be provided with arm power training mechanism on hand cranking shaft main part (1), arm power training mechanism comprises application of force mechanism (3) and dynamics adjustment mechanism (4), application of force mechanism (3) set up in handheld portion, still be provided with the locking mechanism who is used for spacing application of force mechanism (3) on application of force mechanism (3), dynamics adjustment mechanism (4) set up on the drive division, the tip of drive division is equipped with stop gear (2), application of force mechanism (3) and dynamics adjustment mechanism (4) are connected through connecting plate (6), be provided with grip training mechanism (5) on the connecting portion.

2. The hand cranking shaft for chair according to claim 1, wherein the force application mechanism (3) is composed of a first limiting sleeve (302) and a second limiting sleeve (304), a first limiting groove (301) is formed in the peripheral side of the hand-held portion, the cross section of the hand-held portion located in the first limiting groove (301) is rectangular, the first limiting sleeve (302) is sleeved on the first limiting groove (301), a second limiting groove (303) is formed in the peripheral side of the first limiting sleeve (302), the cross section of the first limiting sleeve (302) located in the second limiting groove (303) is circular, the second limiting sleeve (304) is sleeved on the second limiting groove (303), and one end of the connecting plate (6) is fixedly arranged at the bottom of the first limiting sleeve (302).

3. The hand crank shaft for chair as claimed in claim 2, wherein the hand grip is sleeved with a first spring (305), and the first spring (305) is located at the bottom end of the first limit sleeve (302).

4. The hand crank shaft for the chair according to claim 2, wherein the force adjusting mechanism (4) is composed of an operation cavity (401) arranged in the driving part, a connecting column (405) fixedly arranged at the other end of the connecting plate (6), a plug board (404) fixedly arranged at the end part of the connecting column (405) and two extrusion plates (402) arranged oppositely to the plug board (404) and positioned at the bottom of the operation cavity (401), the connecting column (405) is vertically sleeved in the operation cavity (401), the extrusion plates (402) are fixedly arranged at the bottom of the operation cavity (401), and the end parts of the extrusion plates (402) are fixedly provided with rubber heads (403).

5. The hand crank shaft for chair as claimed in claim 4, wherein the locking mechanism is a conical surface (3021) provided at the top end of the first limit sleeve (302), and the top end of the first limit sleeve (302) is equally divided into four through four vertical openings, the conical surface (3021) is an externally threaded conical surface, and a nut (3022) is screwed on the conical surface (3021).

6. The hand crank shaft for the chair according to claim 1, wherein the grip training mechanism (5) is specifically an adjusting mechanism (505) provided at the connecting portion, the adjusting mechanism (505) is composed of a cylindrical section (5051) and a rectangular section (5052), a sleeve (504) matched with the rectangular section (5052) is sleeved on the adjusting mechanism (505), an expansion link (502) is fixedly arranged on the peripheral side of the sleeve (504), a top plate (503) is fixedly arranged at the end of the expansion link (502), and a second spring (501) is sleeved on the expansion link (502).

7. The hand crank shaft for chair according to claim 1, wherein the limiting mechanism (2) is composed of a rectangular block (201) fixedly disposed at the end of the connecting portion and a positioning mechanism disposed on the rectangular block (201).

8. The hand crank shaft for a chair according to claim 8, wherein the positioning mechanism is embodied as a conical block (203), and the conical block (203) is fixedly arranged at the bottom end of the rectangular block (201).

Technical Field

The invention relates to a hand crank shaft, in particular to a hand crank shaft for a chair.

Background

The first patent is as follows: the invention discloses a manual massage chair (application number: CN201410232823.7), belonging to the technical field of massage device structures. The manual massage chair is designed mainly for the following purposes: the chair aims to solve the problem that when people rest on the chair, the arms can be moved, and the effect of massaging the back of the body is achieved through the movement of the arms. The manual massage chair mainly comprises a crank, armrests, a seat board, chair legs, a chair back, a threaded rod and a transmission belt. The method is characterized in that: the crank and the threaded rod can rotate 360 degrees; the crank passes through the armrest and the seat plate, the bottom of the armrest is provided with a groove, the threaded rod is arranged on the chair back, the bottom of the threaded rod is also provided with a groove, and the two grooves are provided with transmission belts; the crank on the armrest can be rotated by the arm to drive the armrest bottom to rotate, and the threaded rod is driven to rotate by the friction force between the groove surface at the armrest bottom and the transmission belt, so that the effects of movement and massage are realized.

However, the crank handle is only used for driving the threaded rod in the specific implementation, so that the practicability is greatly reduced, and the utilization rate of the components is poor. We have therefore improved this and propose a hand crank for a chair.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a hand crank shaft for a chair.

In order to solve the technical problems, the invention provides the following technical scheme:

the invention relates to a hand cranking shaft for a chair, which comprises a hand cranking shaft main body, wherein the hand cranking shaft main body is composed of a hand holding part, a driving part and a connecting part for connecting the hand holding part and the driving part, an arm strength training mechanism is arranged on the hand cranking shaft main body and consists of a force application mechanism and a force adjusting mechanism, the force application mechanism is arranged on the hand holding part, a locking mechanism for limiting the force application mechanism is further arranged on the force application mechanism, the force adjusting mechanism is arranged on the driving part, a limiting mechanism is arranged at the end part of the driving part, the force application mechanism and the force adjusting mechanism are connected through a connecting plate, and a holding force training mechanism is arranged on the connecting part.

As a preferred technical solution of the present invention, the force application mechanism is composed of a first limiting sleeve and a second limiting sleeve, a first limiting groove is formed on the periphery of the handheld portion, the cross section of the handheld portion located in the first limiting groove is rectangular, the first limiting sleeve is sleeved on the first limiting groove, a second limiting groove is formed on the periphery of the first limiting sleeve, the cross section of the first limiting sleeve located in the second limiting groove is circular, the second limiting sleeve is sleeved on the second limiting groove, and one end of the connecting plate is fixedly disposed at the bottom of the first limiting sleeve.

As a preferable technical solution of the present invention, a first spring is sleeved on the handheld portion, and the first spring is located at a bottom end of the first limiting sleeve.

As a preferred technical scheme of the invention, the force adjusting mechanism is composed of an operation cavity arranged on the driving part, a connecting column fixedly arranged at the other end of the connecting plate, an inserting plate fixedly arranged at the end part of the connecting column and two extrusion plates positioned at the bottom of the operation cavity and arranged opposite to the inserting plate, the connecting column is vertically sleeved in the operation cavity, the extrusion plates are fixedly arranged at the bottom of the operation cavity, and the end parts of the extrusion plates are fixedly provided with rubber heads.

As a preferred technical scheme of the present invention, the locking mechanism is specifically a tapered surface disposed at a top end of the first limiting sleeve, the top end of the first limiting sleeve is equally divided into four parts through four vertical openings, the tapered surface is specifically an external thread tapered surface, and a nut is connected to the tapered surface in a threaded manner.

As a preferred technical scheme of the invention, the grip strength training mechanism is specifically an adjusting mechanism arranged on the connecting portion, the adjusting mechanism is composed of a cylindrical section and a rectangular section, a sleeve matched with the rectangular section is sleeved on the adjusting mechanism, a telescopic rod is fixedly arranged on the peripheral side of the sleeve, a top plate is fixedly arranged at the end of the telescopic rod, and a second spring is sleeved on the telescopic rod.

As a preferred technical solution of the present invention, the limiting mechanism is composed of a rectangular block fixedly disposed at an end of the connecting portion and a positioning mechanism disposed on the rectangular block.

As a preferred technical solution of the present invention, the positioning mechanism is specifically a conical block, and the conical block is fixedly disposed at the bottom end of the rectangular block.

The invention has the beneficial effects that: this kind of a hand crank axle for chair:

1. the arm strength training mechanism can be used for training the arm strength while massaging the back by using the hand crank shaft to drive the massage structure, so that the problem of single function of the hand crank shaft in the prior art is solved, and the practicability is high;

2. the detachable form of the hand crank shaft main body is realized through the limiting mechanism, so that the grip training can be realized by using the grip training mechanism, and the practicability of the hand crank shaft is further enhanced;

3. because the hand cranking shaft main part is Z shape, consequently creative design application of force mechanism and dynamics adjustment mechanism make the position of holding of user's handheld hand cranking shaft just can realize the dynamics regulation of arm strength training, strengthens the convenience travelling comfort in the use.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a sectional view schematically illustrating a handle shaft for a chair according to the present invention;

FIG. 2 is a schematic view of a force adjustment mechanism for a hand crank of a chair according to the present invention;

FIG. 3 is a schematic diagram of a grip training mechanism for a hand crank of a chair according to the present invention;

FIG. 4 is a schematic view of a force applying mechanism for a hand crank shaft of a chair according to the present invention;

FIG. 5 is a schematic view of a locking mechanism for a handle shaft of a chair according to the present invention;

FIG. 6 is a schematic structural view of a limiting mechanism of a handle shaft for a chair according to the present invention;

FIG. 7 is a schematic view of a tapered surface of a hand crank shaft for a chair according to the present invention;

fig. 8 is a schematic view of a chair incorporating the present invention.

In the figure: 1. a handle shaft main body; 2. a limiting mechanism; 201. a rectangular block; 202. a conical block; 3. a force application mechanism; 301. a first limit groove; 302. a first limit sleeve; 3021. a conical surface; 3022. a nut; 303. a second limit groove; 304. a second limit sleeve; 305. a first spring; 4. a force adjusting mechanism; 401. an operating chamber; 402. a pressing plate; 403. a rubber head; 404. inserting plates; 405. connecting columns; 5. a grip strength training mechanism; 501. a second spring; 502. a telescopic rod; 503. a top plate; 504. a sleeve; 505. an adjustment mechanism; 5051. a cylindrical section; 5052. a rectangular section; 6. a connecting plate; 7. a connecting cylinder.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.