CN211750573U - Wheelchair folding frame and wheelchair - Google Patents
Wheelchair folding frame and wheelchair Download PDFInfo
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- CN211750573U CN211750573U CN202020141300.2U CN202020141300U CN211750573U CN 211750573 U CN211750573 U CN 211750573U CN 202020141300 U CN202020141300 U CN 202020141300U CN 211750573 U CN211750573 U CN 211750573U
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- 230000002349 favourable effect Effects 0.000 description 4
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- 238000005452 bending Methods 0.000 description 2
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
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Abstract
The utility model relates to the field of wheelchairs, and discloses a wheelchair folding frame and a wheelchair, wherein the wheelchair folding frame comprises a first folding part, a second folding part, a third folding part and a fourth folding part, the first folding part, the second folding part, the third folding part and the fourth folding part are sequentially connected in a rotating way to form a four-bar linkage mechanism, and the first folding part, the second folding part, the third folding part and the fourth folding part are matched in a rotating way to enable the wheelchair folding frame to have an open first state and a folded second state; the wheelchair folding frame is when first state is to the second state conversion, the fourth folded piece is the support, first folded piece with first folded piece and fourth folded piece junction are the rotation center, upwards rotate, the second folded piece with the third folded piece drives down at first folded piece the fourth folded piece is close to. The folding frame of the wheelchair is convenient to fold and open.
Description
Technical Field
The utility model relates to a tool field of riding instead of walk, especially a wheelchair folding leg and wheelchair.
Background
The wheelchair is used as a tool for riding instead of walk for people with mobility disabilities, is very common in use, not only enables the people with mobility disabilities to move through the wheelchair, but also increases the possibility that the people take part in social activities.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to improve prior art's shortcoming, provide a wheelchair folding leg and wheelchair, realize conveniently folding and open the wheelchair.
The technical scheme is as follows:
the wheelchair folding frame comprises a first folding piece, a second folding piece, a third folding piece and a fourth folding piece, wherein the first folding piece, the second folding piece, the third folding piece and the fourth folding piece are sequentially connected in a rotating mode to form a four-bar linkage; the first folding piece, the second folding piece, the third folding piece and the fourth folding piece are in running fit, so that the wheelchair folding frame has an open first state and a folded second state; the wheelchair folding frame is when first state is to the second state conversion, the fourth folded piece is the support, first folded piece with first folded piece and fourth folded piece junction are the rotation center, upwards rotate, the second folded piece with the third folded piece drives down at first folded piece the fourth folded piece is close to.
The first folding part, the second folding part, the third folding part and the fourth folding part are sequentially connected in a rotating way to form a four-bar linkage mechanism, the folding frame of the wheelchair has an open first state and a folded second state by utilizing the change of the rotating state of the four-bar linkage mechanism, the open first state is the state of the folding frame of the wheelchair when the wheelchair is actually used, when the wheelchair is folded, one side of the first folding part, which is far away from the fourth folding part, rotates upwards, at the moment, the fourth folding part is contacted with the bearing surface and serves as a support, the first folding part rotates upwards by taking the position connected with the fourth folding part as the center, because the first folding part is matched with the second folding part in a rotating way, and the second folding part is matched with the third folding part in a rotating way, when the first folding part rotates upwards and is gradually aligned with the fourth folding part, the second folding part and the third folding part also rotate along with each other, towards the fourth fold. The wheelchair folding frame rotates towards the second state under the action of external force, the wheelchair folding frame contracts in the transverse direction and protrudes upwards in the longitudinal direction, and folding is completed at the moment, so that the wheelchair folding frame is opened or folded and is realized through rotation of the four-bar mechanism, and the wheelchair folding frame is convenient to fold. And the wheelchair folding frame is transversely contracted, so that the wheelchair folding frame occupies a small area and is more favorable for storage.
At least one of the first folding piece, the second folding piece, the third folding piece and the fourth folding piece is provided with a first limiting piece, and the first limiting piece stops the wheelchair folding frame from rotating continuously after rotating to a first state. Because the four-bar mechanism is adopted, when the wheelchair is in the first state, the first limiting part is arranged to prevent the wheelchair folding frame from continuously rotating, the first state can be prevented from being rotated, the wheelchair folding frame is prevented from being rotated excessively, and other parts are prevented from being damaged.
The first limiting part is arranged on the first folding part and is close to or positioned at the rotary connection position of the first folding part and the second folding part. Install first locating part in the rotation junction, because this position need reserve certain space when rotating, so the installation of first locating part can not influence the installation of other spare parts, and the design is comparatively ingenious.
The first limiting part is provided with a protruding limiting part, and when the wheelchair folding frame is in the first state, the limiting part is abutted to the second folding part. And a protruding limiting part is arranged, and the limiting part is abutted against the second folding part to prevent the wheelchair folding frame from continuously rotating.
At least one of the first folding piece, the second folding piece, the third folding piece and the fourth folding piece is provided with a second limiting piece, and the second limiting piece stops the wheelchair folding frame from rotating continuously after rotating to a second state. In order to avoid that the wheelchair folding frame continues to rotate when in the second state and the rest parts are knocked to be damaged, the second limiting part is utilized to prevent the wheelchair folding frame from continuing to rotate when rotating in the second state.
The second limiting part is installed on the second folding part, and when the wheelchair folding frame is in the second state, the second limiting part is abutted to the third folding part. When the wheelchair folding frame is in the second state, the second folding part and the third folding part are close to each other, so that the second limiting part is installed on the second folding part, and when the second limiting part is in contact with the third folding part, the maximum folding position is reached, the wheelchair folding frame cannot rotate continuously, and other parts are affected.
The fourth folding piece and the second folding piece are respectively provided with a first extending end and a second extending end which extend outwards, when the wheelchair folding frame is in the first state, the first extending end and the second extending end are far away, and when the wheelchair folding frame is in the second state, the first extending end and the second extending end are close to each other. The first and second extensions are configured to facilitate connection to provide a location for other components.
The first extension end and the second extension end are both provided with installation positions, and wheel assemblies are respectively installed on the installation positions of the first extension end and the second extension end. The setting of this installation position provides an installation position for the other spare parts of installation wheelchair, does not influence the dress of wheelchair folding leg again simultaneously and trades between first state and second state, and first extension end and second extension end are downward setting, and wheel subassembly installs and directly plays the effect of accepting in this position.
First folded piece, second folded piece, third folded piece and fourth folded piece all are provided with two at least rotation hookups, first folded piece, second folded piece, third folded piece and fourth folded piece pass through rotate the hookup location and rotate, the line length of respective rotation hookup location on first folded piece, second folded piece, third folded piece and the fourth folded piece is four link mechanism's every pole effective length. When the wheelchair folding frame rotates in the first state and the second state, the fourth folding part is used as a support, and according to the principle of a link mechanism, the second folding part and the third folding part have two conditions when being close to the fourth folding part, the first condition is that the fourth folding part is close to a mode that the second folding part and the third folding part are overlapped, and the second condition is that the fourth folding part is close to a mode that the second folding part and the third folding part are flat and straight. The first mode is a rotation mode of the embodiment, and at this time, the second folding piece and the third folding piece approach to the fourth folding piece, that is, the wheelchair folding frame transversely contracts, and when the second folding piece and the third folding piece approach to the fourth folding piece, the second folding piece protrudes upward, that is, the wheelchair folding frame longitudinally protrudes outward.
The first folding piece is a seat plate, and when the wheelchair folding frame is switched from the first state to the second state, the seat plate is switched to the vertical direction. First folded piece directly is the seat, so the seat can not exist foldingly at folding in-process, and the seat is complete seat promptly, compares in current folding mechanism and folds the seat usually, and current folding mechanism all need be dismantled to the part of installing at the seat, like the cushion, and the integrality of seat is guaranteed to this folding mode, consequently can install multiple different parts at the seat, also can avoid damaging during folding. Even if the seat cushion is arranged on the seat plate, the folding of the wheelchair can be completed without dismounting the seat cushion.
The second folding piece and the third folding piece are provided with bent ends, and the bent protruding directions face towards the inside of the wheelchair folding frame. The bending part is arranged to increase the aesthetic feeling, and the protruding direction is towards the inner part of the folding frame of the wheelchair, so that the part can be closer to the central position and the protruding position is less when the wheelchair is folded.
The first folding piece, the second folding piece, the third folding piece and the fourth folding piece are all provided with two pieces and are symmetrically arranged. The mode that the symmetry was provided with two, stability reinforcing is favorable to increase of service life.
Every two first folding piece, second folding piece, third folding piece and fourth folding piece are fixed connection respectively. And the two symmetrical first folding pieces, the two symmetrical second folding pieces, the two symmetrical third folding pieces and the two symmetrical fourth folding pieces are respectively connected in a fixed connection mode, so that the stability in the transverse direction is improved, and the shaking condition can be effectively reduced.
A wheelchair comprising a wheel assembly, a back portion, an armrest and the aforementioned wheelchair fold, the back portion being mounted on the first fold and the armrest and the wheel assembly being mounted on the fourth fold. Namely, the wheelchair uses the wheelchair folding frame, so that the wheelchair is more convenient to fold.
The wheelchair further comprises a rear assembly, the rear assembly is provided with the wheel assembly and is spliced with the wheelchair folding frame, the second folding piece is provided with a first clamping part, and the first folding piece is provided with a second clamping part; the rear assembly is provided with a third clamping part facing the wheelchair folding frame and corresponding to the first clamping part, and a fourth clamping part facing the wheelchair folding frame and corresponding to the second clamping part; when the first clamping part is clamped with the third clamping part and the second clamping part is clamped with the fourth clamping part, the wheelchair folding frame is locked in a first state; when the first clamping portion and the third clamping portion are disengaged and the second clamping portion and the fourth clamping portion are disengaged, the wheelchair folding frame can be switched to a second state. When the wheelchair is used, the rear assembly is installed, and the wheel component on the rear assembly and the wheel component on the fourth folding piece are in contact with the bearing surface to support the wheelchair. The wheelchair folding frame is in the first state, the rear assembly is spliced, at the moment, the third clamping portion and the fourth clamping portion on the rear assembly are clamped on the first clamping portion and the second clamping portion respectively, so that the relative position between the first clamping portion and the second clamping portion is fixed, the positions of the first folding piece and the second folding piece are controlled to be fixed, and the wheelchair folding frame is locked in the first state. When the wheelchair folding leg needs to be folded into the second state, the first clamping portion, the third clamping portion, the second clamping portion and the fourth clamping portion are released from clamping, so that the first clamping portion and the second clamping portion are in relatively fixed contact with each other in position, the wheelchair folding leg can be folded, and the wheelchair folding leg is convenient to place.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention in a first state;
fig. 2 is a schematic perspective view of the first state to the second state according to the embodiment of the present invention;
fig. 3 is a schematic perspective view of the embodiment of the present invention in a second state;
fig. 4 is a schematic plan view of the embodiment of the present invention in the first state;
fig. 5 is a schematic plan view of the first state converting to the second state according to the embodiment of the present invention;
fig. 6 is a schematic plan view of the embodiment of the present invention in the second state;
fig. 7 is an exploded view of an embodiment of the present invention;
FIG. 8 is a schematic view of a wheelchair fold and rear assembly installation in accordance with an embodiment of the present invention;
figure 9 is a schematic view of the back rest of an embodiment of the invention;
figure 10 is a schematic view of a rear assembly with wheel assemblies removed according to an embodiment of the present invention.
Description of reference numerals:
10. a first fold; 11. rotating the connecting position; 12. a second clamping part; 20. a second fold; 21. A second extended end; 22. an installation position; 23. a bent end; 24. a first clamping part; 30. a third folding member; 40. a fourth fold; 41. a first extension end; 50. a first limit piece; 51. a limiting part; 60. a second limiting member; 70. a wheel assembly; 80. a backrest part; 90. a handrail; 01. a rear assembly; 011. a third clamping connection part; 012. and a fourth clamping part.
Detailed Description
The following describes embodiments of the present invention in detail.
As shown in fig. 1, the wheelchair folding leg includes a first folding member 10, a second folding member 20, a third folding member 30 and a fourth folding member 40, and the first folding member 10, the second folding member 20, the third folding member 30 and the fourth folding member 40 are sequentially and rotatably connected to form a four-bar linkage. As shown in fig. 1, 2 and 3, the first folding member 10, the second folding member 20, the third folding member 30 and the fourth folding member 40 are rotatably engaged to enable the wheelchair folding frame to have an open first state and a folded second state; when the wheelchair folding frame is switched to the second state from the first state, the fourth folding member 40 is a support, the first folding member 10 is used as a rotation center at the joint of the first folding member 10 and the fourth folding member 40, and the first folding member 10 rotates upwards, and the second folding member 20 and the third folding member 30 are driven by the first folding member 10 and move downwards, and the fourth folding member 40 is close to the second state.
The first folding part 10, the second folding part 20, the third folding part 30 and the fourth folding part 40 are sequentially connected in a rotating mode to form a four-bar linkage mechanism, the first unfolded state and the second folded state of the wheelchair folding frame are achieved by means of the change of the rotating state of the four-bar linkage mechanism, the first unfolded state is the state of the wheelchair folding frame when the wheelchair is actually used, when the wheelchair needs to be folded, one side, far away from the fourth folding part 40, of the first folding part 10 rotates upwards, at the moment, the fourth folding part 40 is in contact with a bearing surface and serves as a support, the first folding part 10 rotates upwards by taking the position connected with the fourth folding part 40 as the center, because the first folding part 10 is matched with the second folding part 20 in a rotating mode, and the second folding part 20 is matched with the third folding part 30 in a rotating mode, when the first folding part 10 rotates upwards and is gradually flush with the fourth folding part 40, the second and third folds 20, 30 also follow the rotation, approaching the fourth fold 40. The wheelchair folding frame rotates towards the second state under the action of external force, the wheelchair folding frame contracts in the transverse direction and protrudes upwards in the longitudinal direction, and folding is completed at the moment, so that the wheelchair folding frame is opened or folded and is realized through rotation of the four-bar mechanism, and the wheelchair folding frame is convenient to fold. And the wheelchair folding frame is transversely contracted, so that the wheelchair folding frame occupies a small area and is more favorable for storage.
The above-mentioned longitudinal direction, transverse direction, upward direction and downward direction are referred to the bearing surface when the wheelchair is used, and are transverse direction in the bearing surface direction and longitudinal direction in the vertical bearing surface direction; the direction far away from the bearing surface is upward, and the direction close to the bearing surface is downward.
In the preferred embodiment, the fourth folding member is relatively fixed and requires a support point for folding, which is the point of force to pass through the ground. When the first folding piece is broken off, the position where the fourth folding piece is matched is taken as a rotation center, so that the folding is regarded as static, namely the position of the fourth folding piece is relatively fixed.
As shown in fig. 2, at least one of the first folding member 10, the second folding member 20, the third folding member 30 and the fourth folding member 40 is provided with a first limiting member 50, and the first limiting member 50 blocks the wheelchair folding frame from rotating to the first state and then continues to rotate. Because the four-bar mechanism is adopted, when the wheelchair is in the first state, the first limiting part 50 is arranged to prevent the wheelchair folding frame from continuously rotating, so that the first state can be prevented from being rotated, the wheelchair folding frame is prevented from being rotated excessively, and other parts are prevented from being damaged.
As shown in fig. 3, the first retaining member 50 is disposed on the first folding member 10, and is close to or located at a rotational connection position of the first folding member 10 and the second folding member 20. The first limiting part 50 is arranged at the rotating connection position, and a certain space is required to be reserved in the rotating connection position, so that the installation of the first limiting part 50 cannot influence the installation of other parts, and the design is ingenious.
In the present embodiment, the first limiting member 50 is specifically installed at the rotary connection position of the first folding member 10 and the second folding member 20.
As shown in fig. 7, the first stopper 50 is provided with a protruding stopper portion 51, and when the wheelchair folding frame is in the first state, the stopper portion 51 abuts against the second folding member 20. A protruding limit part 51 is provided, and the limit part 51 is abutted against the second folding part 20 to prevent the wheelchair folding frame from continuing to rotate.
As shown in fig. 4, at least one of the first folding member 10, the second folding member 20, the third folding member 30 and the fourth folding member 40 is provided with a second limiting member 60, and the second limiting member 60 blocks the wheelchair folding frame from rotating after rotating to the second state. In order to avoid that the wheelchair folding frame continues to rotate when in the second state and the rest parts are knocked to be damaged, the second limiting piece 60 is utilized to prevent the wheelchair folding frame from continuing to rotate when rotating in the second state.
As shown in fig. 7, the second limiting member 60 is mounted on the second folding member 20, and when the wheelchair folding frame is in the second state, the second limiting member 60 abuts against the third folding member 30. When the wheelchair folding frame is in the second state, the second folding part 20 and the third folding part 30 are close to each other, so that the second limiting part 60 is installed on the second folding part 20, and when the second limiting part 60 is in contact with the third folding part 30, the maximum folding position is reached, and the wheelchair folding frame cannot continue to rotate, so that other parts are affected.
As shown in fig. 1, the fourth folding member 40 and the second folding member 20 respectively have a first extending end 41 and a second extending end 21 extending outwardly, as shown in fig. 1, when the wheelchair folding frame is in the first state, the first extending end 41 and the second extending end 21 are far away, as shown in fig. 3, when the wheelchair folding frame is in the second state, the first extending end 41 and the second extending end 21 are close to each other. The provision of the first and second extensions 41, 21 facilitates the connection to provide a location for other components. For example, to mount the wheel assembly 70, on the first extended end 41 and the second extended end 21.
As shown in fig. 2, the first extending end 41 and the second extending end 21 are both provided with mounting positions 22. The mounting location 22 is configured to provide a mounting location 22 for mounting other wheelchair components without interfering with the switching of the wheelchair's folding frame between the first and second positions. Such as mounting location 22, when wheel assembly 70 is desired to be mounted.
The wheel assemblies 70 are respectively mounted on the mounting positions 22 of the first extending end 41 and the second extending end 21. The first and second extension ends 41 and 21 are both disposed downward, and the wheel assembly 70 is mounted in this position in direct contact with the ground, so that the first and second extension ends 41 and 21 receive the wheelchair's folding frame.
As shown in fig. 7, each of the first, second, third and fourth folding members 10, 20, 30 and 40 is provided with at least two rotation connecting positions 11, and the first, second, third and fourth folding members 10, 20, 30 and 40 rotate through the rotation connecting positions 11, as shown in fig. 4, 5 and 6, the length of the connecting line of the respective rotation connecting positions 11 on the first, second, third and fourth folding members 10, 20, 30 and 40 is the effective length of each rod of the four-bar linkage mechanism.
When the wheelchair folding frame is rotated in the first state and the second state, the fourth folding member 40 is used as a support, and the second folding member 20 and the third folding member 30 are close to the fourth folding member 40 according to the principle of the link mechanism, wherein the first state is that the second folding member 20 and the third folding member 30 are overlapped and close to the fourth folding member 40, and the second state is that the second folding member 20 and the third folding member 30 are straight and close to the fourth folding member 40. The first way is blocked by the first limiting member 50, and cannot be realized, and the second way is the rotating way of the embodiment, at this time, when the second folding member 20 and the third folding member 30 approach the fourth folding member 40, that is, the wheelchair folding frame is transversely contracted, and when the second folding member 20 and the third folding member 30 approach the fourth folding member 40, the second folding member 20 protrudes upwards, that is, the wheelchair folding frame protrudes outwards in the longitudinal direction.
In this embodiment, the folded first and second ends 41 and 21 are adjacent to each other, so the wheel assemblies 70 are also adjacent to each other.
As shown in fig. 4, 5 and 6, the dashed connecting lines indicate the effective length of each rod in the four-bar linkage formed by the first, second, third and fourth folds 10, 20, 30 and 40. Each rod of the four-bar linkage mechanism is a virtual rod, and refers to a virtual rod forming the effective length of the four-bar linkage mechanism.
In the present embodiment, there are two matching manners of the rotation connecting portions 11, the first one is that one rotation connecting portion 11 is a shaft sleeve, and the other rotation connecting portion 11 is a rotating shaft, such as the matching manner of the first folding member 10 and the fourth folding member 40; second, the rotating connection 11 is a hinged connection with two mating ends, such as the first folding member 10 and the second folding member 20.
As shown in fig. 3, 6 and 7, the first folding member 10 is a seat plate, and when the wheelchair folding frame is converted from the first state to the second state, the seat plate is converted to the vertical direction. First folding piece 10 directly is the seat, so the seat can not exist foldingly in folding process, and the seat is complete seat promptly, compares and folds the seat usually in current folding mechanism, so install the part at the seat and all need dismantle, like the cushion, the integrality of seat is guaranteed to the folding mode of this embodiment, consequently can install multiple different parts at the seat, also can avoid damaging during folding.
As shown in fig. 4, the second folding member 20 and the third folding member 30 each have a curved end 23, and the curved protruding directions are both toward the inside of the wheelchair folding frame. The bending part is arranged to increase the aesthetic feeling, and the protruding direction is towards the inner part of the folding frame of the wheelchair, so that the part can be closer to the central position and the protruding position is less when the wheelchair is folded.
As shown in fig. 1 and 7, the first, second, third and fourth folding members 10, 20, 30 and 40 are symmetrically disposed. The mode that the symmetry was provided with two, stability reinforcing is favorable to increase of service life.
Every two of the first folding member 10, the second folding member 20, the third folding member 30 and the fourth folding member 40 are fixedly connected. In addition, since the two symmetrical first, second, third and fourth folds 10, 20, 30 and 40 are connected by the fixing connection, the stability in the transverse direction is improved, and the shaking is effectively reduced.
As shown in fig. 8 and 9, the wheelchair comprises a wheel assembly 70, a backrest 80, an armrest 90 and the aforementioned wheelchair folding frame, wherein the backrest 80 is mounted on the first folding member 10, and the armrest 90 and the wheel assembly 70 are mounted on the fourth folding member 40. Namely, the wheelchair uses the wheelchair folding frame, so that the wheelchair is more convenient to fold. And the folding of the wheelchair will not fold the seat plate of the wheelchair. So the seat can not exist foldingly in folding process, and the seat is complete seat promptly, compares in current folding mechanism and folds the seat usually, and current folding mechanism all need be dismantled to the part of installing at the seat, like the cushion, the integrality of seat is guaranteed to the folding mode of this embodiment, consequently can install multiple different parts at the seat, also can avoid damaging during folding. Even if the seat cushion is arranged on the seat plate, the folding of the wheelchair can be completed without dismounting the seat cushion. The wheelchair may be in the form of a stroller or in the form of a scooter.
As shown in fig. 8, 9 and 10, the wheelchair further comprises a rear assembly 01, the rear assembly 01 is provided with the wheel assembly 70, the rear assembly 01 is spliced with the folding frame of the wheelchair, the second folding member 20 is provided with a first clamping portion 24, and the first folding member 10 is provided with a second clamping portion 12;
a third clamping part 011 is arranged at the position, corresponding to the first clamping part 24, of the rear assembly 01 facing the wheelchair folding frame, and a fourth clamping part 012 is arranged at the position, corresponding to the second clamping part 12, of the rear assembly 01 facing the wheelchair folding frame;
when the first clamping portion 24 and the third clamping portion 011 are clamped and the second clamping portion 12 and the fourth clamping portion 012 are clamped, the wheelchair folding frame is locked in a first state; when the first engaging portion 24 and the third engaging portion 011 are disengaged and the second engaging portion 12 and the fourth engaging portion 012 are disengaged, the wheelchair folding leg can be switched to the second state.
When the wheelchair is used, the upper rear assembly 01 is installed, the wheel component 70 on the rear assembly 01 and the wheel component 70 on the fourth folding part 40 are contacted with the bearing surface, and the wheelchair is supported. Here, the wheelchair folding leg is in the first state, the rear assembly 01 is spliced, and at this time, the third clamping portion 011 and the fourth clamping portion 012 on the rear assembly 01 are respectively clamped on the first clamping portion 24 and the second clamping portion 12, so that the relative position between the first clamping portion 24 and the second clamping portion 12 is fixed, the positions of the first folding member 10 and the second folding member 20 are controlled to be fixed, and the wheelchair folding leg is locked in the first state. When the wheelchair folding leg needs to be folded into the second state, the first clamping portion 24, the third clamping portion 011, the second clamping portion 12 and the fourth clamping portion 012 are released, so that the first clamping portion 24 and the second clamping portion 12 are in relatively fixed contact with each other in position, and the wheelchair folding leg can be folded and placed conveniently.
It should be noted that:
the foregoing "first, second, and third … …" do not denote any particular quantity or order, but rather are used merely to distinguish one name from another.
The above horizontal, vertical, downward and upward directions are all the positions of the wheelchair folding frame in the first state, and the position of the wheelchair folding frame in actual use is taken as a reference. For example, downward means toward the ground.
The above are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereby; any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.
Claims (15)
1. The wheelchair folding frame is characterized by comprising a first folding piece, a second folding piece, a third folding piece and a fourth folding piece, wherein the first folding piece, the second folding piece, the third folding piece and the fourth folding piece are sequentially and rotatably connected to form a four-bar linkage;
the first folding piece, the second folding piece, the third folding piece and the fourth folding piece are in running fit, so that the wheelchair folding frame has an open first state and a folded second state;
the wheelchair folding frame is when first state is to the second state conversion, the fourth folded piece is the support, first folded piece with first folded piece and fourth folded piece junction are the rotation center, upwards rotate, the second folded piece with the third folded piece drives down at first folded piece the fourth folded piece is close to.
2. The wheelchair folding leg of claim 1 wherein at least one of the first folding member, the second folding member, the third folding member and the fourth folding member is provided with a first limiting member, and the first limiting member prevents the wheelchair folding leg from rotating after rotating to the first state.
3. The wheelchair folding leg of claim 2 wherein the first retaining member is disposed on the first folding member near or at the rotational connection between the first folding member and the second folding member.
4. The wheelchair folding leg as claimed in claim 3, wherein the first retaining member is provided with a protruding retaining portion, and the retaining portion abuts against the second folding member when the wheelchair folding leg is in the first state.
5. The wheelchair folding leg of claim 1 wherein at least one of the first folding member, the second folding member, the third folding member and the fourth folding member is provided with a second limiting member, and the second limiting member prevents the wheelchair folding leg from rotating after the wheelchair folding leg rotates to the second state.
6. The wheelchair folding leg of claim 5 wherein the second retaining member is mounted on the second folding member, and wherein the second retaining member abuts the third folding member when the wheelchair folding leg is in the second position.
7. The wheelchair folding leg of any one of claims 1 to 6 wherein the fourth folding member and the second folding member have a first extended end and a second extended end extending outwardly, respectively, the first extended end and the second extended end being distal when the wheelchair folding leg is in the first state, and the first extended end and the second extended end being proximal when the wheelchair folding leg is in the second state.
8. The wheelchair folding leg of claim 7 wherein the first and second extensions are each provided with a mounting location, and wherein the mounting locations of the first and second extensions are each provided with a wheel assembly.
9. The wheelchair folding leg as claimed in any one of claims 1 to 6, wherein the first folding member, the second folding member, the third folding member and the fourth folding member are each provided with at least two rotation connecting positions through which the first folding member, the second folding member, the third folding member and the fourth folding member rotate, and the respective rotation connecting positions of the first folding member, the second folding member, the third folding member and the fourth folding member are connected by an effective length of each rod of the four-bar linkage.
10. The wheelchair folding leg of claim 9 wherein the first folding member is a seat plate, and wherein the seat plate is adapted to be vertically oriented when the wheelchair folding leg is adapted to be moved from the first position to the second position.
11. The wheelchair folding stand of any one of claims 1 to 6 wherein the second folding member and the third folding member each have a curved end, the curved protruding direction being towards the inside of the wheelchair folding stand.
12. The wheelchair folding frame as claimed in any one of claims 1 to 6, wherein the first folding member, the second folding member, the third folding member and the fourth folding member are provided in two pieces and are symmetrically provided.
13. The wheelchair folding leg of claim 12 wherein each of the first, second, third and fourth folding members are fixedly attached.
14. A wheelchair comprising a wheel assembly, a back portion, an armrest and a folding frame as claimed in any one of claims 1 to 13, the back portion being mounted on the first folding member and the armrest and the wheel assembly being mounted on the fourth folding member.
15. The wheelchair of claim 14 further comprising a rear assembly, wherein the rear assembly mounts the wheel assembly, the rear assembly is coupled to the folding frame of the wheelchair, the second folding member has a first engaging portion, and the first folding member has a second engaging portion;
the rear assembly is provided with a third clamping part facing the wheelchair folding frame and corresponding to the first clamping part, and a fourth clamping part facing the wheelchair folding frame and corresponding to the second clamping part;
when the first clamping part is clamped with the third clamping part and the second clamping part is clamped with the fourth clamping part, the wheelchair folding frame is locked in a first state; when the first clamping portion and the third clamping portion are disengaged and the second clamping portion and the fourth clamping portion are disengaged, the wheelchair folding frame can be switched to a second state.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020141300.2U CN211750573U (en) | 2020-01-21 | 2020-01-21 | Wheelchair folding frame and wheelchair |
| PCT/CN2020/139927 WO2021147617A1 (en) | 2020-01-21 | 2020-12-28 | Wheelchair folding frame and wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020141300.2U CN211750573U (en) | 2020-01-21 | 2020-01-21 | Wheelchair folding frame and wheelchair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211750573U true CN211750573U (en) | 2020-10-27 |
Family
ID=72903709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020141300.2U Active CN211750573U (en) | 2020-01-21 | 2020-01-21 | Wheelchair folding frame and wheelchair |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN211750573U (en) |
| WO (1) | WO2021147617A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147617A1 (en) * | 2020-01-21 | 2021-07-29 | 广州视源电子科技股份有限公司 | Wheelchair folding frame and wheelchair |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007014680B4 (en) * | 2007-03-27 | 2009-06-18 | Pihsiang Machinery Manufacturing Co., Ltd., Sinfong | Folding, electric wheelchair |
| CN204744694U (en) * | 2015-06-13 | 2015-11-11 | 杭州树邦科技有限公司 | Foldable electric wheel chair |
| CN106309039B (en) * | 2016-08-31 | 2018-02-16 | 常州中进医疗器材有限公司 | A kind of Quick clutch mechanism and the wheelchair with the mechanism |
| CN106901921B (en) * | 2017-04-25 | 2019-11-22 | 昆山奥仕达电动科技有限公司 | Detachable electric wheelchair |
| CN108309593B (en) * | 2018-02-22 | 2019-12-03 | 哈尔滨工业大学 | A kind of sufficient isomorphism deformation type wheelchair exoskeleton robot of wheel |
| CN209019213U (en) * | 2018-09-05 | 2019-06-25 | 青岛护适通医疗科技有限公司 | A kind of fully collapsible invalid's chair retractable handle device |
| CN209075201U (en) * | 2018-09-05 | 2019-07-09 | 青岛护适通医疗科技有限公司 | A kind of fully collapsible invalid's chair main body |
| CN211750573U (en) * | 2020-01-21 | 2020-10-27 | 广州视源电子科技股份有限公司 | Wheelchair folding frame and wheelchair |
-
2020
- 2020-01-21 CN CN202020141300.2U patent/CN211750573U/en active Active
- 2020-12-28 WO PCT/CN2020/139927 patent/WO2021147617A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147617A1 (en) * | 2020-01-21 | 2021-07-29 | 广州视源电子科技股份有限公司 | Wheelchair folding frame and wheelchair |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021147617A1 (en) | 2021-07-29 |
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