CN219743151U - Damping mechanism for wheelchair and wheelchair - Google Patents

Abstract

The utility model discloses a damping mechanism for a wheelchair and the wheelchair, which comprise a seat and an axle, wherein the seat is connected with the axle through the damping mechanism, the damping mechanism comprises sleeves, a support, a damper, a spring, a locking piece and a connecting rod, the two sleeves are slidably arranged on supporting legs of the seat and locked through the locking piece, the support is arranged on one sleeve, one end of the connecting rod is hinged on the other sleeve, one end of the damper is hinged on the other end of the connecting rod, the other end of the damper is hinged on the support, the spring is arranged on the damper, and the axle is arranged on the connecting rod. The damping mechanism which is rotationally connected by utilizing the three points changes the damping motion of the vertical direction into the mixed motion of the vertical motion and the transverse motion, thereby effectively avoiding the great fluctuation feeling and the hard impact feeling brought to the user when the wheelchair is damped and improving the use body feeling of the user. Meanwhile, the damping mechanism of the wheelchair is externally provided with damping parts (a damper and a spring) and is convenient to replace and maintain.

Description

Damping mechanism for wheelchair and wheelchair

Technical Field

The utility model relates to the technical field of wheelchairs, in particular to a damping mechanism for a wheelchair and the wheelchair.

Background

The wheelchair is a chair with wheels capable of helping to replace walking, mainly comprises a hand-push wheelchair and an electric wheelchair, and is an important moving tool for home rehabilitation, turnover transportation, consultation and outgoing activities of wounded persons, patients and disabled persons. The wheelchair not only meets the riding instead of walking requirements of disabled limbs and people with mobility impairment, but also is more important to facilitate the movement of family members and care of patients, so that the patients can exercise and participate in social activities by means of the wheelchair.

The common hand-push wheelchair has the advantages of simple structure, light weight, convenient movement, low manufacturing cost and the like, and is widely used in hospitals, public places and the like or temporarily used in emergency. However, the common hand push wheelchair is simple in structure, so that the experience of a user is often neglected, and particularly, the shock absorption is reduced. The shock absorption on the common wheelchair usually utilizes a spring or a shock absorber to avoid the up-and-down jolt of the seat, the working mode is straight up-and-down motion, and although the hard impact with larger feeling is not brought to a user, the user still has obvious up-and-down fluctuation feeling, and the use experience is more common. In addition, some wheelchair damper springs or dampers are typically built-in, resulting in difficult later replacement and maintenance.

Disclosure of Invention

The utility model aims to provide a damping mechanism for a wheelchair and the wheelchair, which are used for solving the problems that a damping movement mode on a common wheelchair is straight up and down, a user still has obvious up-down fluctuation feeling, and a damping piece spring or a damper of some wheelchairs is generally arranged in a built-in way, so that later replacement and maintenance are difficult.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a damper for wheelchair, includes seat and shaft, the seat with the shaft passes through damper and connects, damper includes sleeve pipe, support, bumper shock absorber, spring, retaining member and connecting rod, two sleeve pipe slidable mounting is in on the landing leg of seat and through the retaining member locks, the support is installed one of them on the sleeve pipe, the one end of connecting rod articulates another on the sleeve pipe, the one end of bumper shock absorber articulates the other end of connecting rod, the other end of bumper shock absorber articulates on the support, the spring is installed on the bumper shock absorber, the shaft is installed on the connecting rod.

The further technical scheme is that the shock absorber is a cylinder shock absorber, and the spring is arranged on a telescopic rod of the cylinder shock absorber.

The further technical scheme is that the locking piece is a butterfly bolt.

The technical scheme is that a guide structure is arranged between the sleeve and the supporting leg.

The technical scheme is that the guide structure is a convex block and a concave groove which are in sliding fit.

The further technical scheme is that cross sections of the sleeve and the supporting leg are square.

A wheelchair comprising the shock absorbing mechanism described above.

The further technical scheme is that two shock absorbers on the wheelchair are connected through a cross rod.

Compared with the prior art, the utility model has at least one of the following beneficial effects:

the utility model provides a damping mechanism for a wheelchair and the wheelchair, wherein the damping mechanism is arranged between a seat and a wheel shaft and is in three-point rotary connection, so that the traditional vertical and straight down damping motion can be changed into the mixed motion of partial vertical motion and partial transverse motion, the phenomenon that the wheelchair brings larger fluctuation sense and rigid impact sense to a user during damping is effectively avoided, and the use body sense of the user is improved. Meanwhile, the damping mechanism of the wheelchair is further externally provided with the damping piece (the damper and the spring), and the damping piece is convenient to replace and maintain when the damping piece is damaged by the spring or needs to be replaced according to the weight of a user, and is convenient to replace according to the actual conditions of the weight of the user and the like.

Drawings

Fig. 1 is a schematic view of a shock absorbing mechanism for a wheelchair and a wheelchair according to the present utility model.

FIG. 2 is a schematic view of the shock absorbing mechanism of FIG. 1 according to the present utility model.

Fig. 3 is a schematic structural view of a guide structure in the present utility model.

Fig. 4 is a schematic view of the structure of the cross bar in the present utility model.

Reference numerals: 1. a seat; 2. a wheel axle; 3. a damping mechanism; 4. a sleeve; 5. a support; 6. a damper; 7. a spring; 8. a locking member; 9. a connecting rod; 10. a support leg; 11. a guide structure; 12. a cross bar.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Embodiment one:

this embodiment is shown in fig. 1 and 2, and is a damping mechanism for a wheelchair, which comprises a seat 1 and an axle 2, wherein the seat 1 and the axle 2 are connected through the damping mechanism 3, the damping mechanism 3 comprises a sleeve 4, a support 5, a damper 6, a spring 7, a locking member 8 and a connecting rod 9, the two sleeves 4 are slidably mounted on a leg 10 of the seat 1 and locked by the locking member 8, the support 5 is mounted on one of the sleeves 4, one end of the connecting rod 9 is hinged on the other sleeve 4, one end of the damper 6 is hinged on the other end of the connecting rod 9, the other end of the damper 6 is hinged on the support 5, the spring 7 is mounted on the damper 6, and the axle 2 is mounted on the connecting rod 9. The damper 6 is a cylinder damper, and the spring 7 is mounted on a telescopic rod of the cylinder damper.

The working process of the utility model is as follows: when the wheel axle 2 bears gravity and is jolted, the wheel axle 2 transmits force to the damping mechanism 3, specifically, the wheel axle 2 transmits the received force to the connecting rod 9, the connecting rod 9 moves in an arc on the sleeve 4, the damper 6 digests and absorbs the force on the connecting rod 9 while moving in an arc, meanwhile, the large-amplitude movement of the connecting rod 9 is reduced, and the spring 7 can further strengthen the damping effect. The sleeve 4 can change the height of the damping mechanism 3, namely, adjust the height of the wheel shaft to adapt to the weight of a patient, so that the front wheel and the rear wheel are horizontal. The damping mechanism with three-point rotary connection is arranged between the seat and the wheel axle, so that the traditional vertical and straight-down damping motion can be changed into the mixed motion of part of vertical motion and part of transverse motion, the wheelchair is effectively prevented from bringing larger fluctuation sense and rigid impact sense to a user during damping, and the use body sense of the user is improved. Meanwhile, the damping mechanism of the wheelchair is further externally provided with the damping piece (the damper and the spring), and the damping piece is convenient to replace and maintain when the damping piece is damaged by the spring or needs to be replaced according to the weight of a user, and is convenient to replace according to the actual conditions of the weight of the user and the like.

Preferably, the locking member 8 is a butterfly bolt.

The butterfly bolt is convenient to screw and adjust the position of the sleeve 4.

Preferably, a guiding structure 11 is provided between the sleeve 4 and the leg 10. The guide structure 11 is a sliding fit of a bump and a groove.

The limit structure 9 includes, but is not limited to, a sliding fit of a bump and a groove. The projections and recesses may be provided on the sleeve 4 and the leg 8, respectively. The sleeve 4 and the supporting leg 10 are convenient to be assembled and matched, and meanwhile, the axial rotation between the sleeve and the supporting leg is prevented.

Preferably, the cross-section of the sleeve 4 and the leg 10 are square.

The square fit is also one of the microstructures 9, but is simpler and easier to assemble than the arrangement of the bumps and grooves.

Preferably, the two shock absorbers 6 on the wheelchair are connected by a cross bar 12.

The transverse rod 12 can be utilized between the two shock absorbers 6 to ensure the stress balance between the two wheel shafts 2 and share the pressure of the wheel shafts 2 as much as possible.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (8)

1. A damping mechanism for a wheelchair, characterized by: including seat (1) and shaft (2), seat (1) with shaft (2) are connected through damper (3), damper (3) include sleeve pipe (4), support (5), bumper shock absorber (6), spring (7), retaining member (8) and connecting rod (9), two sleeve pipe (4) slidable mounting are in on landing leg (10) of seat (1) and pass through retaining member (8) are locked, support (5) are installed in one of them sleeve pipe (4), the one end of connecting rod (9) articulates another on sleeve pipe (4), the one end of bumper shock absorber (6) articulates the other end of connecting rod (9), the other end of bumper shock absorber (6) articulates on support (5), spring (7) are installed on bumper shock absorber (6), shaft (2) are installed on connecting rod (9).

2. A shock absorbing mechanism for a wheelchair in accordance with claim 1, wherein: the shock absorber (6) is a cylinder shock absorber, and the spring (7) is arranged on a telescopic rod of the cylinder shock absorber.

3. A shock absorbing mechanism for a wheelchair in accordance with claim 1, wherein: the locking piece (8) is a butterfly bolt.

4. A shock absorbing mechanism for a wheelchair in accordance with claim 1, wherein: a guiding structure (11) is arranged between the sleeve (4) and the supporting leg (10).

5. The shock absorbing mechanism for a wheelchair of claim 4, wherein: the guide structure (11) is a protruding block and a groove which are in sliding fit.

6. A shock absorbing mechanism for a wheelchair in accordance with claim 1, wherein: the cross sections of the sleeve (4) and the supporting leg (10) are square.

7. A wheelchair, characterized in that: the wheelchair comprising the shock absorbing mechanism of any one of claims 1-6.

8. A wheelchair according to claim 7, characterised in that: the two shock absorbers (6) on the wheelchair are connected through a cross rod (12).