CN210749900U

CN210749900U - Wheelchair folding mechanism and foldable portable wheelchair

Info

Publication number: CN210749900U
Application number: CN201921479175.XU
Authority: CN
Inventors: 曾长春; 易永贵
Original assignee: Raise Medical Industries Inc
Current assignee: Raise Medical Industries Inc
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-06-16
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses a wheelchair folding mechanism, including being used for with four main tributary poles of wheel swing joint, still include central support, central support includes that central branch and cover locate the central sleeve pipe of central branch, and central branch can relative slip with central sleeve pipe, be provided with first connecting rod and second connecting rod between main tributary pole and the central sleeve pipe, the second connecting rod is located the top of first connecting rod, the both ends of first connecting rod articulate main tributary pole and central sleeve pipe respectively, the both ends of second connecting rod articulate main tributary pole and central sleeve pipe respectively, the second connecting rod articulates there is the third connecting rod, the top of central branch is fixed with the pole head, the pole head is located central sheathed tube top, the pole head is articulated with the third connecting rod. The wheelchair folding mechanism can reduce the transverse size and the longitudinal size of the wheelchair after being folded, thereby improving the portability. The utility model also discloses a collapsible portable wheelchair of adopting this wheelchair folding mechanism.

Description

Wheelchair folding mechanism and foldable portable wheelchair

Technical Field

The utility model relates to a wheelchair technical field especially relates to a wheelchair folding mechanism and adopt this wheelchair folding mechanism's collapsible portable wheelchair.

Background

The folding mechanism of the existing wheelchair is generally realized by adopting a cross bracket, and the folding mechanism is characterized in that the folding mechanism can be only transversely folded or only longitudinally folded. The limitations of the conventional folding methods are that the wheelchair adopting the transverse folding mode has no change in the longitudinal dimension after being folded, and the wheelchair adopting the longitudinal folding mode has no change in the transverse dimension after being folded. That is, the wheelchair cannot be folded to reduce both the lateral and longitudinal dimensions, and the portability of the wheelchair cannot be improved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, one of the objects of the present invention is to provide a wheelchair folding mechanism, which can reduce the transverse size and the longitudinal size of the wheelchair after being folded. Another object of the present invention is to provide a foldable portable wheelchair using the wheelchair folding mechanism, which can reduce the transverse size and the longitudinal size after folding.

The wheelchair folding mechanism of the utility model adopts the following technical scheme to realize:

the utility model provides a wheelchair folding mechanism, includes four main tributary poles that are used for with wheel swing joint, still includes central support, central support includes that central branch and cover locate central branch's central sleeve pipe, just central branch with central sleeve pipe can relative slip, main tributary pole with be provided with first connecting rod and second connecting rod between the central sleeve pipe, the second connecting rod is located the top of first connecting rod, articulated main tributary pole and central sleeve pipe respectively in the both ends of second connecting rod, the second connecting rod articulates there is the third connecting rod, the top of central branch is fixed with the pole head, the pole head is located central sheathed tube top, the pole head with the third connecting rod is articulated.

Further, the first connecting rod is hinged to the bottom end of the central sleeve, and the second connecting rod is hinged to the top end of the central sleeve.

The utility model discloses a collapsible portable wheelchair adopts following technical scheme to realize:

a foldable and portable wheelchair comprises the wheelchair folding mechanism.

Furthermore, the foldable portable wheelchair further comprises wheels, the wheels comprise front wheels and rear wheels, and the four main supporting rods are divided into two front supporting rods movably connected with the front wheels and two rear supporting rods movably connected with the rear wheels.

Furthermore, the foldable portable wheelchair further comprises a chair back support used for assembling a chair back, wherein the chair back support comprises two chair back support rods, and the two chair back support rods are respectively hinged to the top ends of the two back support rods.

Furthermore, a handle and a brake handle are arranged at the top end of the chair back support rod.

Further, two back of the chair branches all articulate there is the handrail frame.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model provides a wheelchair folding mechanism and collapsible portable wheelchair, including four main tributary poles and central support, these four main tributary poles are used for wheel swing joint with the wheelchair, central support includes central branch and central sleeve pipe, be provided with first connecting rod, second connecting rod between main tributary pole and the central sleeve pipe, the second connecting rod articulates there is the third connecting rod, the pole head of main tributary pole articulates with the third connecting rod, the both ends of second connecting rod articulate main tributary pole and central sleeve pipe respectively;

the central support rod and the central sleeve can slide relatively, when the central support rod slides upwards relative to the central sleeve, the third connecting rod can rotate towards the central support and drive the second connecting rod to rotate towards the central support, and meanwhile, the first connecting rod can also rotate towards the central support, so that when the central support rod slides upwards relative to the central sleeve, the main support rods can approach towards the central support, the folding function is realized, and in the folding process, the four main support rods can approach towards the central support, so that the transverse size and the longitudinal size of the wheelchair can be reduced simultaneously, and the portability of the wheelchair is improved better;

because the foldable portable wheelchair adopts the wheelchair folding mechanism, the foldable portable wheelchair can be folded and simultaneously reduce the transverse size or the longitudinal size.

Drawings

FIG. 1 is a schematic structural view of a foldable portable wheelchair in an unfolded state according to a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of the wheelchair folding mechanism of the foldable portable wheelchair of FIG. 1 in an unfolded state;

FIG. 3 is a schematic structural view of the folding mechanism of the wheelchair of FIG. 2 in a transitional state;

FIG. 4 is a structural schematic view of the wheelchair folding mechanism of FIG. 2 in a folded state;

FIG. 5 is a schematic structural view of a center support of the folding mechanism of the wheelchair shown in FIG. 2;

FIG. 6 is a schematic structural view of the foldable portable wheelchair of FIG. 1 in a folded state.

In the figure: 1. a primary strut; 2. a central support; 21. a central strut; 22. a central sleeve; 3. a first link; 4. a second link; 5. a third link; 211. a club head; 6. a front wheel; 7. a rear wheel; 8. a chair back strut; 81. a handle; 82. a brake handle; 9. an armrest frame.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Fig. 1 is a schematic structural view of a foldable portable wheelchair in an unfolded state according to a preferred embodiment of the present invention. The foldable and portable wheelchair includes a wheelchair folding mechanism. Fig. 2 is a structural schematic view of the wheelchair folding mechanism in a unfolded state.

FIG. 3 is a schematic structural view of the folding mechanism of the wheelchair in a transitional state; figure 4 is a mechanism schematic view of the wheelchair folding mechanism in a folded state.

With reference to figures 2, 3 and 4, the wheelchair folding mechanism comprises four main struts 1 for articulation with the wheels, and a central support 2. Fig. 5 is a schematic structural view of the center support 2.

The central support 2 comprises a central support rod 21 and a central sleeve 22 sleeved on the central support rod 21, the central support rod 21 and the central sleeve 22 can slide relatively, a first connecting rod 3 and a second connecting rod 4 are arranged between the main support rod 1 and the central sleeve 22, the second connecting rod 4 is positioned above the first connecting rod 3, two ends of the first connecting rod 3 are respectively hinged with the main support rod 1 and the central sleeve 22, two ends of the second connecting rod 4 are respectively hinged with the main support rod 1 and the central sleeve 22, the second connecting rod 4 is hinged with a third connecting rod 5, a rod head 211 is fixed at the top end of the central support rod 21, the rod head 211 is positioned above the central sleeve 22, and the rod head 211 is hinged with the third connecting rod 5; specifically, the first link 3 is hinged at the bottom end of the center sleeve 22, and the second link 4 is hinged at the top end of the center sleeve 22.

Referring to fig. 2, 3 and 4, since the central strut 21 and the central sleeve 22 can slide relatively, when the central strut 21 slides upward relative to the central sleeve 22, the third connecting rod 5 rotates toward the central bracket 2 and drives the second connecting rod 4 to rotate toward the central bracket 2, and at the same time, the first connecting rod 3 also rotates toward the central bracket 2, when the central strut 21 slides upward relative to the central sleeve 22, the main struts 1 approach toward the central bracket 2, thereby implementing a folding function, and in the folding process, the four main struts 1 all approach toward the central bracket 2, so that the transverse dimension and the longitudinal dimension of the wheelchair can be reduced simultaneously, and the portability of the wheelchair is improved better.

Figure 6 is a schematic view of the collapsible portable wheelchair in a collapsed configuration.

Referring to fig. 1 and 6, since the foldable portable wheelchair of the present embodiment employs the wheelchair folding mechanism of the present embodiment, the foldable portable wheelchair can be folded while reducing the lateral or longitudinal dimension.

Specifically, the wheels of the foldable portable wheelchair comprise a front wheel 6 and a rear wheel 7, and four main struts 1 of the foldable portable wheelchair are divided into two front struts movably connected with the front wheel 6 and two rear struts movably connected with the rear wheel 7; the foldable portable wheelchair further comprises a chair back support used for assembling a chair back (not shown), the chair back support comprises two chair back support rods 8, the top ends of the chair back support rods 8 are provided with handles 81 and brake handles 82, and the two chair back support rods 8 are both hinged with armrest frames 9.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a wheelchair folding mechanism, includes four main tributary poles that are used for with wheel swing joint, its characterized in that: still include central support, central support includes that central branch and cover locate central branch's central sleeve pipe, just central branch with central sleeve pipe can relative slip, main tributary pole with be provided with first connecting rod and second connecting rod between the central sleeve pipe, the second connecting rod is located the top of first connecting rod, the both ends of first connecting rod articulate main tributary pole and central sleeve pipe respectively, the both ends of second connecting rod articulate main tributary pole and central sleeve pipe respectively, the second connecting rod articulates there is the third connecting rod, the top of central branch is fixed with the pole head, the pole head is located central sheathed tube top, the pole head with the third connecting rod is articulated.

2. A wheelchair folding mechanism as claimed in claim 1, wherein: the first connecting rod is hinged to the bottom end of the central sleeve, and the second connecting rod is hinged to the top end of the central sleeve.

3. A foldable and portable wheelchair is characterized in that: comprising a wheelchair folding mechanism according to claim 1 or 2.

4. A foldable and portable wheelchair, as claimed in claim 3, wherein: the foldable portable wheelchair further comprises wheels, each wheel comprises a front wheel and a rear wheel, and the four main supporting rods are divided into two front supporting rods movably connected with the front wheels and two rear supporting rods movably connected with the rear wheels.

5. The foldable and portable wheelchair as recited in claim 4, wherein: the foldable portable wheelchair further comprises a chair back support used for assembling a chair back, wherein the chair back support comprises two chair back support rods, and the two chair back support rods are respectively hinged to the top ends of the two back support rods.

6. The foldable and portable wheelchair as recited in claim 5, wherein: the top end of the chair back support rod is provided with a handle and a brake handle.

7. The foldable and portable wheelchair as recited in claim 6, further comprising: the two chair back support rods are hinged with armrest frames.