CN216091113U

CN216091113U - Folding wheelchair

Info

Publication number: CN216091113U
Application number: CN202120368044.5U
Authority: CN
Inventors: 张娜
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2022-03-22
Anticipated expiration: 2031-02-07

Abstract

The utility model provides a folding wheelchair, wherein the folding wheelchair comprises a wheelchair frame, a rear wheel assembly and a front wheel assembly. The rear wheel assembly is coupled to the rear end of the wheelchair frame, wherein the front wheel assembly includes two front wheels that are detachably disposed at the front end of the wheelchair frame, the front wheels including a front wheel unit coupled to a front wheel support shaft that is detachably disposed at the lower end of the wheelchair frame, and a front wheel support shaft.

Description

Folding wheelchair

Technical Field

The utility model relates to the field of medical instruments, in particular to a folding wheelchair.

Background

The wheelchair is an important moving tool for home rehabilitation, turnover transportation, treatment and outgoing activities of wounded persons, patients and disabled persons, not only meets the requirements of physically disabled persons and persons with mobility disabilities for riding instead of walk, but also is more important to facilitate the family members to move and take care of the patients, so that the patients can do physical exercises and participate in social activities by means of the wheelchair.

The folding wheelchair is designed into a foldable structure on the basis of the original wheelchair so as to be convenient for storage and storage. The application of the folding structure enables the wheelchair to have smaller volume when not in use, saves occupied space and is particularly suitable for being stored in a trunk of a vehicle when going out.

The prior art folding wheelchairs comprise a foldable frame and a pair of rear wheels and a pair of front wheels arranged on the foldable frame, wherein the rear wheels are used as main supporting structures of a foldable bracket, and the front wheels control the walking direction of the wheelchair for a steering mechanism of the folding wheelchair. Therefore, the wheels on the left and right sides of the folding wheelchair support the foldable frame in the unfolded state. When in the folded state, the front wheels and the rear wheels of the folding wheelchair are close towards the middle, so that the size of the folding wheelchair in the transverse direction is reduced.

However, the folding wheelchair of the prior art cannot be further reduced in size when stored, and the overall length dimension does not change although the overall width is reduced after folding, which is inconvenient for storage and storage of the folding wheelchair. In addition, since the front wheel of the folding wheelchair of the related art is a mechanism that is freely rotatable, the front wheel of the folding wheelchair can be rotated even in the storage state, which affects the storage.

On the other hand, the length of the front wheel and the rear wheel of the folding wheelchair in the prior art is generally fixed, and the length can not be adjusted to be suitable for different users. For certain people, such as children or adults of large size, the fixed-size wheelchair is not suitable for their body size and is inconvenient to operate. In addition, the prior art foldable wheelchair has the problem that the user sits empty, for example, the user is inconvenient to grasp the distance between the body and the wheelchair when sitting on the wheelchair, especially for users with small stature. When the wheelchair is used, the pedal plate needs to be lifted up to sit on the seat of the wheelchair, so that the use method is very inconvenient for many users and has a great safety problem.

SUMMERY OF THE UTILITY MODEL

One of the principal advantages of the present invention is to provide a folding wheelchair that can be disassembled in a folded condition to reduce the overall length and width dimensions in the folded condition to facilitate storage and stowage of the folding wheelchair.

Another advantage of the present invention is to provide a folding wheelchair including a wheelchair frame and a front wheel assembly removably attached to the wheelchair frame, wherein the front wheel assembly is removably attached to the wheelchair frame to further reduce the overall size of the folding wheelchair in a folded position by removing the front wheel assembly, thereby facilitating storage and stowage of the folding wheelchair.

It is another advantage of the present invention to provide a folding wheelchair wherein the front wheel assembly of the folding wheelchair is nested with the wheelchair frame and the length of the front wheel assembly extending outwardly is adjustable to adjust the spacing between the front and rear wheels of the folding wheelchair to accommodate different users.

It is another advantage of the present invention to provide a folding wheelchair wherein the folding wheelchair further includes a handle assembly, wherein the handle assembly is removably attached to the wheelchair frame, and wherein removal of the handle assembly in the folded position facilitates further reduction in the overall size of the folding wheelchair for storage and storage.

Another advantage of the present invention is to provide a folding wheelchair in which the handle assembly of the folding wheelchair is mutually nested with the wheelchair frame, and the length of the forward extension of the handle assembly can be adjusted to adjust the size of the folding wheelchair in the unfolded state, which is advantageous for users of different sizes.

Another advantage of the present invention is to provide a folding wheelchair that does not require complex mechanical structures and expensive mechanical equipment. The utility model thus provides a cost-effective solution.

Another advantage of the present invention is to provide a foldable wheelchair, wherein the foldable wheelchair can adjust the distance between the user's body and the seat space of the foldable wheelchair, thereby preventing the user from sitting empty and improving the safety of the foldable wheelchair.

In accordance with one aspect of the present invention, the foregoing and other objects and advantages are achieved in a folding wheelchair comprising:

a wheelchair frame;

a rear wheel assembly, wherein the rear wheel assembly is coupled to a rear end of the wheelchair frame; and

a front wheel assembly, wherein the front wheel assembly includes two front wheels that are removably disposed at a front end of the wheelchair frame, the front wheels including a front wheel unit and a front wheel support shaft, the front wheel unit being coupled to the front wheel support shaft, the front wheel support shaft being removably disposed at a lower end of the wheelchair frame.

According to at least one embodiment of the present invention, the front wheel support shaft of the front wheel is telescopically sleeved on the wheelchair frame, and the distance between the front wheel assembly and the rear wheel assembly is adjusted by adjusting the telescopic length of the front wheel support shaft.

According to at least one embodiment of the present invention, the front wheel support shaft includes a telescopic sleeve shaft and a wheel shaft disposed at one end of the telescopic sleeve shaft, wherein the telescopic sleeve shaft is detachably sleeved in a front wheel shaft hole of the wheelchair frame, and the length of the front wheel extending outward is adjusted by adjusting the telescopic length of the telescopic sleeve shaft in the front wheel shaft hole.

According to at least one embodiment of the utility model, the axle is perpendicular to the telescopic shaft and is arranged at one end of the telescopic shaft, the front wheel unit being coupled to the axle of the front wheel support shaft.

According to at least one embodiment of the present invention, the front wheel unit is pivotably connected to the axle of the front wheel supporting shaft.

In accordance with at least one embodiment of the present invention, the wheelchair frame includes a folding mechanism, a frame support associated with the folding mechanism, wherein the front wheel assembly and the rear wheel assembly are disposed on the frame support of the wheelchair frame, the frame support being located on either side of the folding mechanism.

According to at least one embodiment of the present invention, the rack unit includes a first supporting cross bar, a second supporting cross bar, at least one supporting vertical bar, and at least one fixing connector, wherein the fixing connector is disposed between the first supporting cross bar and the second supporting cross bar, and the supporting vertical bar is disposed at one end of the first supporting cross bar and the second supporting cross bar.

According to at least one embodiment of the present invention, further comprising a handle assembly, wherein the handle assembly is detachably provided to the frame bracket of the wheelchair frame.

In accordance with at least one embodiment of the present invention, the handle assembly is telescopically disposed to the wheelchair frame, wherein the handle assembly is located at a forward end of the frame unit of the frame and extends forwardly from the frame unit.

According to at least one embodiment of the utility model, the handle assembly comprises two handle means, wherein the handle means are detachably and telescopically arranged to the second support rail of the stand unit.

According to at least one embodiment of the utility model, the handle arrangement comprises a telescopic connection telescopically arranged to the second support crossbar of the rack unit and a handle body coupled to the telescopic connection.

According to at least one embodiment of the present invention, the second supporting cross bar is provided with an adjusting hole, the telescopic connecting member is provided with at least one locking hole at a position corresponding to the adjusting hole, and the locking unit is fixed to the locking hole of the telescopic connecting member through the adjusting hole of the second supporting cross bar.

According to at least one embodiment of the present invention, the adjusting hole of the second supporting cross bar is a long strip-shaped through hole, and the locking hole of the telescopic connecting member is a round hole for fixing the locking unit.

According to at least one embodiment of the present invention, the second support rail is further provided with at least one positioning hole, wherein the telescopic connector is provided with a positioning groove at a position corresponding to the positioning hole, wherein the positioning hole controls the extension length of the handle assembly through a positioning unit.

According to at least one embodiment of the utility model, the telescopic connector further comprises a telescopic member and a carrier member, wherein the carrier member is fixed to one end of the telescopic member and the handle body is coupled to the carrier member of the telescopic connector.

According to at least one embodiment of the present invention, the wheelchair further comprises a footrest device, wherein the footrest device is coupled to the handle assembly and is linked to the handle assembly, and when the footrest device is subjected to a resistance, the footrest device drives the handle assembly to move so as to adjust a distance between a seat space of the wheelchair frame and a position of a user.

According to at least one embodiment of the present invention, the footrest device includes a footrest and a footrest link, wherein the footrest is pivotably provided to the footrest link, the footrest link is detachably and telescopically provided to a lower end of the handle body, and a height of the footrest is adjusted by adjusting a telescopic length of the footrest link.

According to at least one embodiment of the present invention, the front wheel support shaft of the front wheel is telescopically fitted to the wheelchair frame, the distance between the front wheel assembly and the rear wheel assembly is adjusted by adjusting the telescopic length of the front wheel support shaft, wherein the front wheel support shaft includes a telescopic sleeve shaft and a wheel shaft provided at one end of the telescopic sleeve shaft, wherein the telescopic sleeve shaft is detachably fitted to a front wheel shaft hole of the wheelchair frame, the length of the front wheel extending outward is adjusted by adjusting the telescopic length of the telescopic sleeve shaft in the front wheel shaft hole, wherein the wheel shaft is perpendicular to the telescopic sleeve shaft, and the wheel shaft is provided at one end of the telescopic sleeve shaft, the front wheel unit is coupled to the wheel shaft of the front wheel support shaft, wherein the front wheel unit is pivotably connected to the wheel shaft of the front wheel support shaft, wherein the wheelchair frame comprises a folding mechanism, a frame support coupled to the folding mechanism, wherein the front wheel assembly and the rear wheel assembly are disposed at the frame support of the wheelchair frame, the frame support being located at both sides of the folding mechanism, wherein the support unit comprises a first support cross bar, a second support cross bar, at least one support longitudinal bar, and at least one fixed connector, wherein the fixed connector is disposed between the first support cross bar and the second support cross bar, the support longitudinal bar is disposed at one end of the first support cross bar and the second support cross bar, further comprising a handle assembly, wherein the handle assembly is detachably disposed at the frame support of the wheelchair frame, wherein the handle assembly is telescopically disposed at the wheelchair frame, wherein the handle assembly is located at a front end of the support unit of the frame support, and the handle assembly extends forward from the stand unit, wherein the handle assembly comprises two handle devices, wherein the handle devices are detachably and telescopically disposed at the second supporting cross bar of the stand unit, wherein the handle devices comprise a telescopic connecting member and a handle main body, wherein the telescopic connecting member is telescopically disposed at the second supporting cross bar of the stand unit, the handle main body is coupled to the telescopic connecting member, wherein the second supporting cross bar is provided with an adjusting hole, the telescopic connecting member is provided with at least one locking hole at a position corresponding to the adjusting hole, wherein the locking unit is fixed to the locking hole of the telescopic connecting member through the adjusting hole of the second supporting cross bar, wherein the adjusting hole of the second supporting cross bar is an elongated through hole, and the locking hole of the telescopic connecting member is a round hole fixing the locking unit, wherein the second support rail is further provided with at least one positioning hole, wherein the telescopic connecting member is provided with a positioning groove at a position corresponding to the positioning hole, wherein the positioning hole controls the extension length of the handle assembly through a positioning unit, wherein the telescopic connecting member further comprises a telescopic member and a carrier member, wherein the carrier member is fixed to one end of the telescopic member, the handle body is coupled to the carrier member of the telescopic connecting member, further comprising a footrest device, wherein the footrest device is coupled to the handle assembly, the footrest device is linked to the handle assembly, and when the footrest device is subjected to a resistance force, the handle assembly is driven to move to adjust the distance between the seat space of the wheelchair frame and the position of the user, wherein the footrest device comprises a footrest and a footrest connecting rod, wherein the foot board is pivotally provided to the foot rest link, the foot rest link is detachably and telescopically provided to a lower end of the handle main body, and a height of the foot board is adjusted by adjusting a telescopic length of the foot rest link.

Further objects and advantages of the utility model will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description and the accompanying drawings.

Drawings

FIG. 1A is an overall schematic view of a folding wheelchair in accordance with a first preferred embodiment of the present invention, wherein the folding wheelchair is in an unfolded state.

FIG. 1B is an overall schematic view of the folding wheelchair in accordance with the first preferred embodiment of the present invention, in a folded state.

Figure 2 is a schematic view of the folded wheelchair according to the first preferred embodiment of the present invention, with a front wheel of the folded wheelchair being detachable from the wheelchair frame.

FIG. 3 is a schematic view of the foldable wheelchair in a folded state, in which a handle assembly of the foldable wheelchair is detachable from a wheelchair frame, according to the first preferred embodiment of the present invention

FIG. 4 is a partial schematic structural view of the folding wheelchair showing the front wheel adjustment state thereof according to the first preferred embodiment of the present invention.

FIG. 5 is a partial structural view of the folding wheelchair according to the first preferred embodiment of the present invention, showing the adjustment state of the handle assembly.

Figure 6A is a schematic view of a wheelchair frame of the folding wheelchair in accordance with the first preferred embodiment of the present invention, wherein the wheelchair frame is in an unfolded state.

Figure 6B is a schematic view of a wheelchair frame of the collapsible wheelchair in accordance with the first preferred embodiment of the present invention, wherein the wheelchair frame is in a collapsed state.

Figure 7 is an exploded perspective view of the front wheel assembly of the folding wheelchair in accordance with the first preferred embodiment of the present invention.

Figure 8 is an exploded view of the handle assembly of the folding wheelchair in accordance with the first preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

A collapsible wheelchair in accordance with a first preferred embodiment of the present invention is illustrated in figures 1A to 8 of the accompanying drawings and described in the following description. The folding wheelchair includes a wheelchair frame 10 and a rear wheel assembly 20 coupled to the wheelchair frame 10, wherein the rear wheel assembly 20 is coupled to a rear end of the wheelchair frame 10, and a front wheel assembly 30 coupled to a front end of the wheelchair frame 10. The wheelchair frame 10 has a folded state and an unfolded state, and is switched between the folded state and the unfolded state. When the wheelchair frame 10 is in the folded position, the front wheel assembly 30 and the rear wheel assembly 20 are drawn together with the wheelchair frame 10 from both sides to the middle to reduce the width of the wheelchair for storage and storage. When the wheelchair frame 10 is unfolded from the folded state to the unfolded state, the front wheel assembly 30 and the rear wheel assembly 20 of the folded wheelchair are unfolded (left and right) with the wheelchair frame 10, so that the user can use the wheelchair for riding.

Preferably, in the preferred embodiment of the present invention, the rear wheel assembly 20 is fixedly provided to the rear end of the wheelchair frame 10, wherein the front wheel assembly 30 is detachably provided to the front end of the wheelchair frame 10. When the folding wheelchair is in the folded condition, the front wheel assembly 30 is detachably separated from the wheelchair frame 10 so that the folding wheelchair becomes smaller in length (front-rear) dimension, which further facilitates storage of the folding wheelchair.

In detail, the front wheel assembly 30 includes two front wheels 31 (left and right front wheels), wherein the front wheels 31 are detachably provided under front ends of the wheelchair frame 10, respectively, to support the wheelchair frame 10. Each of the front wheels 31 includes a front wheel unit 311 and a front wheel support shaft 312, wherein the front wheel unit 311 is coupled to the front wheel support shaft 312, and the front wheel unit 311 supports the wheelchair frame 10 through the front wheel support shaft 312. The front wheel support shaft 312 is detachably provided to the wheelchair frame 10, so that in the folded state, the front wheel 31 is separated from the wheelchair frame 10 by detaching the front wheel support shaft 312 of the front wheel 31, thereby reducing the size of the whole folded wheelchair and facilitating storage.

In the preferred embodiment of the present invention, the front wheel support axle 312 is coupled to the wheelchair frame 10. Preferably, the front wheel support shaft 312 is sleeved on the wheelchair frame 10. The wheelchair frame 10 has two front axle holes 101 corresponding to the front wheels 31, wherein the front wheel support shaft 312 is fitted in the front axle holes 101 of the wheelchair frame 10.

It should be noted that, in the preferred embodiment of the present invention, the front wheel 31 is telescopically arranged on the wheelchair frame 10, and the length of the front wheel 31 and the length of the rear wheel 20 are adjusted by adjusting the telescopic length of the front wheel 31, so as to adapt to users of different sizes.

The front wheel support shaft 312 comprises a telescopic sleeve shaft 3121 and a wheel shaft 3122 disposed at one end of the telescopic sleeve shaft 3121, wherein the telescopic sleeve shaft 3121 is detachably sleeved in the front wheel shaft hole 101 of the wheelchair frame 10, and the length of the front wheel 31 extending outwards is adjusted by adjusting the telescopic length of the telescopic sleeve shaft 3121 in the front wheel shaft hole 101, so as to adjust the distance between the front wheel assembly 30 and the rear wheel assembly 20.

The wheel axle 3122 is perpendicular to the telescopic bush shaft 3121, and the wheel axle 3122 is provided at one end of the telescopic bush shaft 3121, and the front wheel unit 311 is coupled to the wheel axle 3122 of the front wheel support shaft 312. Preferably, in this preferred embodiment of the present invention, the front wheel unit 311 is pivotably connected to the wheel shaft 3122 of the front wheel support shaft 312. More preferably, in the preferred embodiment of the present invention, the front wheel unit 311 is freely rotatable based on the axial direction of the wheel axle 3122.

The front wheel support shaft 312 of the front wheel 31 is telescopically and detachably fixed to the wheelchair frame 10, wherein the front wheel support shaft 312 and the wheelchair frame 10 can fix the position of the front wheel 31 through a fixed connection. As an example, the fixing link may be implemented as an insert, wherein the wheelchair frame 10 and the front wheel support shaft 312 are provided with corresponding shaft holes, and the insert is inserted into the corresponding shaft holes of the wheelchair frame 10 and the front wheel support shaft 312 to fix the position of the front wheel 31 and maintain the distance between the front wheel assembly 30 and the rear wheel assembly 20.

Preferably, in this preferred embodiment of the present invention, the front wheel support shaft 312 of the front wheel 31 and/or the wheelchair frame 10 is provided with at least two shaft holes to adjust the length of the front wheel 31 extending outward.

In the unfolded state, the front wheel 31 of the folding wheelchair can be adjusted in length extending outwards, so that the distance between the front wheel assembly 30 and the rear wheel assembly 20 can be adjusted to meet the use requirements of different users. When in the folded condition, the front wheel assembly 30 of the folding wheelchair is detachable from the wheelchair frame 10 to reduce the size of the folding wheelchair in the (fore-aft) length direction for storage and stowage of the folding wheelchair.

The rear wheel assembly 20 includes two rear wheel units 21, wherein the rear wheel units 21 are fixed to the bracket units 121 of the frame bracket 12.

The wheelchair frame 10 includes a folding mechanism 11, and a frame support 12 linked with the folding mechanism 11, wherein the front wheel assembly 30 and the rear wheel assembly 20 are disposed on the frame support 12 of the wheelchair frame 10. The frame brackets 12 are arranged at two sides of the folding mechanism 11, and when the folding wheelchair is folded, the frame brackets 12 are close to the middle of the folding mechanism 11 from two sides; when the folding wheelchair is unfolded, the frame brackets 12 are unfolded from the middle to both sides with the folding mechanism 11 to form a seat space 100 between the frame brackets 12.

It is worth mentioning that the folding mechanism 11 is driven by the frame bracket 12 to unfold from the folded state to the unfolded state or to fold from the unfolded state to the folded state. The folding mechanism 11 is disposed between the frame brackets 12.

The folding mechanism 11 further comprises two folding units 111 connected to each other in a crossing manner, wherein two ends of the folding units 111 are respectively connected to the frame brackets 12 in a transmission manner, and the frame brackets 12 drive the two folding units 111 connected to each other in a crossing manner to switch between the unfolding state and the folding state.

The frame bracket 12 further includes two bracket units 121, wherein the bracket units 121 are disposed outside the folding mechanism 11, an upper end of one of the folding units 111 is fixed to an upper end of one of the bracket units 121, and a lower end of the folding unit 111 is fixed to an inner side of a lower end of the other bracket unit 121. Accordingly, the upper end of the other folding unit 111 is fixed to the upper end of the other holder unit 121, and the lower end of the other folding unit 111 is fixed to the inside of the lower end of the holder unit 121.

The rack unit 121 of the frame rack 12 includes a first support rail 1211, a second support rail 1212, at least one longitudinal support bar 1213, and at least one fixed link 1214, wherein the fixed link 1214 is disposed between the first support rail 1211 and the second support rail 1212, and the longitudinal support bar 1213 is disposed at one end of the first support rail 1211 and the second support rail 1212.

Preferably, in the preferred embodiment of the present invention, the front wheel assembly 30 is disposed on the first support rail 1211 of the frame bracket 12, wherein the first support rail 1211 is located at a lower end of the fixed link 1214, and the second support rail 1212 is located at an upper end of the fixed link 1214. In the preferred embodiment of the present invention, the first support rail 1211 of the frame bracket 12 has a tubular structure, wherein the front wheel support shaft 312 of the front wheel 31 is sleeved on the first support rail 1211. Preferably, in the preferred embodiment of the present invention, the fixing link 1214 of the stand unit 121 is fixed between the first support rail 1211 and the second support rail 1212 by welding. The vertical support bars 1213 are located at the rear ends of the first support rail 1211 and the second support rail 1212, and the vertical support bars 1213 protrude upward from the second support rail 1212.

The frame unit 121 of the frame bracket 12 further includes a rear wheel support shaft 1215, wherein the rear wheel unit 21 of the rear wheel assembly 20 is provided to the rear wheel support shaft 1215 of the frame unit 121. It is worth mentioning that the rear wheel supporting shaft 1215 is provided to the supporting rail 1211 of the stand unit 121.

It is worth mentioning that one end of one of the folding units 111 is fixed to the first support rail 1211, and the other end of the folding unit 111 is fixed to the second support rail 1212 of the other of the rack units 121.

The wheelchair frame 10 further comprises at least one locking device 13, wherein the locking device 13 is used for locking the folding mechanism 13 to lock the folding mechanism 11 when the folding wheelchair is in the unfolded state, so as to maintain the unfolded state of the folding wheelchair. The locking device 13 is arranged between the folding mechanism 11 and the frame support 12. When in the unfolded state, one end of the locking device 13 is connected to a folding unit 111 of the folding mechanism 11, the other end of the locking device 13 is connected to a frame unit 121 of the frame bracket 12, and the locking device 13 is supported between the folding mechanism 11 and the frame bracket 12, whereby the locking device 13 prevents the folding mechanism 11 from rotating.

The wheelchair frame 10 further includes a two-seat frame 14, wherein the two-seat frame 14 is disposed outside the frame bracket 12, and the two-seat frame 14 is pivotably disposed on the frame bracket 12, and the two-seat frame 14 is supported by the frame bracket 12 to form the seat space 100.

The seat-side frame 14 includes a pivotal connection end 141 and a free unfolding end 142 integrally extending from the pivotal connection end 141, wherein the pivotal connection end 141 of the seat-side frame 14 is pivotally connected to the supporting side rail 1213 of the stand unit 121, and wherein the seat-side frame 14 is rotatable about the pivotal connection end 141. The free unfolded end 142 of the seat-side frame 14 may be fixed to the front end of the holder unit 121, i.e., the seat-side frame 14 and the holder unit 121 are parallel to each other in the longitudinal direction. When the unfolding free end 142 of the seat frame 14 is fixed to the front end of the holder unit 121, the seat space 100 is formed inside the seat frame 14 and above the folding mechanism 11. When the deployment free end 142 of the seat frame 14 is deployed from the front end of the holder unit 121, the seat space 100 is opened so that the body of the user can enter the seat space 100 or be removed from the seat space 100.

The wheelchair frame 10 includes at least one frame connector 15, wherein the folding mechanism 11 is secured to the frame bracket 12 by the frame connector 15, and the seat frame 14 is lockable to the front end of the frame bracket 12 by the frame connector 15. The frame connector 15 has a locking hole 150, wherein the free flared end 142 of the seat frame 14 can be secured to the locking hole 150 of the frame connector 15. The locking aperture 150 of the frame connector 15 is sized larger than the free open end 142 of the seat frame 14. Thus, the locking hole 150 of the frame connector 15 has a locking position and an unlocking position, and when the free unfolding end 142 of the seat frame 14 is moved to the locking position, the seat frame 14 is locked and fixed by the frame connector 15; when the free deployment end 142 of the seat-side frame 14 is moved to the unlocked position, the seat-side frame 14 is unlocked and can be removed from the locking hole 150.

The folding wheelchair further includes a handle assembly 40, wherein the handle assembly 40 is coupled to a front end of the wheelchair frame 10, the handle assembly 40 being supported by the wheelchair frame 10. Preferably, in the preferred embodiment of the present invention, the handle assembly 40 is detachably provided to the frame bracket 12 of the wheelchair frame 10, and when the folding wheelchair is in the unfolded state, the handle assembly 40 can be mounted to the wheelchair frame 10 for the user to operate and use; when the folding wheelchair is in the folded condition, the handle assembly 40 is detachable from the wheelchair frame 10 to reduce the size of the folding wheelchair in the (fore-and-aft) length direction, which facilitates further reduction in the volume of the folding wheelchair.

It is worth mentioning that both the front wheel assembly 30 and the handle assembly 40 can be disassembled, and in the folded state, the folding wheelchair is not stable, so that the front wheel assembly 30 and the handle assembly 40 can be stored separately after being disassembled, and the front wheel assembly 30 and the handle assembly 40 of the folding wheelchair can be prevented from colliding with other objects.

More preferably, in the preferred embodiment of the present invention, the handle assembly 40 is telescopically disposed to the wheelchair frame 10, wherein the handle assembly 40 is located at the front end of the frame unit 121 of the frame 12, and the handle assembly 40 extends forward from the frame unit 121. The position of the handle assembly 40 is adjusted by adjusting the outward extension length of the handle assembly 40 to meet the use requirements of different users.

The handle assembly 40 includes two handle devices 41, wherein the handle devices 41 are detachably and telescopically disposed on the second support rail 1212 of the holder unit 121. The handle assembly 41 includes a telescopic connector 411 and a handle body 412, wherein the telescopic connector 411 is telescopically disposed at the second support rail 1212 of the rack unit 121, and the handle body 412 is coupled to the telescopic connector 411.

The telescopic connecting member 411 can be adjustably sleeved on the second supporting cross bar 1212 of the rack unit 121, and the position of the handle body 412 can be adjusted by adjusting the length of the telescopic connecting member 411 in the second supporting cross bar 1212. The telescopic links 411 of the handle assembly 40 are mutually locked with the second support crossbar 1212 by a locking unit to prevent the handle assembly 40 from being detached from the wheelchair frame 10 during use.

The second support rail 1212 has an adjustment hole 12120, and the telescopic connector 411 has at least one locking hole 4110 at a position corresponding to the adjustment hole 12120, wherein the locking unit is fixed to the locking hole 4110 of the telescopic connector 411 through the adjustment hole 12120 of the second support rail 1212. Preferably, in the preferred embodiment of the present invention, the locking unit may be, but is not limited to, a rivet or screw connector.

It should be noted that the adjusting hole 12120 of the second support crossbar 1212 is a through hole extending in a strip shape along the front-back direction (length direction) of the second support crossbar 1212, so as to allow the telescopic connection 411 to move telescopically along the front-back direction (length direction) of the second support crossbar 1212. In short, in the preferred embodiment of the present invention, the adjusting hole 12120 of the second supporting cross bar 1212 is an elongated through hole, and the locking hole 4110 of the telescopic connector 411 is a circular hole for fixing the locking unit.

The second support cross bar 1212 is further provided with at least one positioning hole 12121, wherein the telescopic connector 411 is provided with a positioning slot 4111 at a position corresponding to the positioning hole 12121, wherein the positioning hole 12121 controls the maximum (or minimum) extension length of the handle assembly 40 through a positioning unit. It should be noted that in the preferred embodiment of the present invention, the positioning slot 4111 of the telescopic connector 411 is an elongated through hole, wherein the positioning element (such as a rivet or a screw) extends from the positioning hole 12121 of the second support rail 1212 to the positioning slot 4111 of the telescopic connector 411 to limit the maximum or minimum extension length of the telescopic connector 411.

The telescopic connection 411 further comprises a telescopic member 4112 and a carrier 4113, wherein the carrier 4113 is fixed to an end of the telescopic member 4112, and the handle body 412 is coupled to the carrier 4113 of the telescopic connection 411.

It is worth mentioning that when the folding wheelchair is used, the user can adjust the distance between the handle assembly 40 and the wheelchair frame 10 by adjusting the handle body 412 of the handle assembly 41 to drive the telescopic link 411 to move along the front-rear direction (length direction) of the second support crossbar 1212. It will be appreciated that by adjusting the distance of the handle assembly 40 from the wheelchair frame 10, the distance of the user's body from the seating space 100 is adjusted when the user is using the folding wheelchair.

Since the wheelchair is used, the user sits down and rearward in the seat space 100 of the wheelchair frame 10. Thus, when a user sits down, the handle assembly 40 can be adjusted such that the handle assembly 40 moves in the direction of the wheelchair frame 10 to facilitate the user's body proximity to the seating space 100 of the wheelchair frame 10. The closer the user sits down, the closer the body is to the seat space 100 of the wheelchair frame 10, the more the user is prevented from sitting empty. On the other hand, when the user uses the folding wheelchair, the distance between the handle assembly 40 and the wheelchair frame 10 is adjusted, so that the positions of the hands and/or feet of the user can be adjusted according to the requirements of the user.

It is worth mentioning that the carrier 4112 of the telescopic connection 411 is a sleeve structure, wherein the handle body 412 can be sleeved on the carrier 4112 of the telescopic connection 411, and the handle body 412 is carried by the carrier 4112.

The handle body 412 is fixed to the carrier 4112 of the telescopic connection 411, wherein the handle body 412 includes a handle holder 4121 and at least one plug 4122 provided to the handle holder 4121, wherein the plug 4122 is provided to an end of the handle holder 4121 and extends downward from the handle holder 4121.

The plug 4122 of the handle body 412 may be plugged into the carrier 4112 of the telescopic connection 411. The handle grip 4121 of the handle body 412 includes a first handle unit 41211 and a second handle unit 41212, wherein the plug 4122 of the handle body 412 is integrally provided to the first handle unit 41211. The second handle unit 41212 of the handle body 412 is fixed to the outside of the carrier 4112 of the telescopic connection 411, whereby the second handle unit 41212 fixes the handle body 412.

It is worth mentioning that the first handle unit 41211 and the second handle unit 41212 of the handle body 412 form an annular handle space 41210 for the user to grip. The handle assembly 40 further includes at least one handle operation plate 42, wherein the handle operation plate 42 is provided to the handle unit 41. The handle operating plate 42 is provided to the handle space 41210 of the handle main body 412, and the handle assembly 40 can be controlled by the handle operating plate 42 when the user uses the folding wheelchair.

The folding wheelchair further comprises a foot rest device 50, wherein the foot rest device 50 is coupled to the handle assembly 40, the foot rest device 50 being adapted to support the foot of the user. When the folding wheelchair is used for sitting behind a user, the foot rest 50 first contacts the foot or leg of the user. Therefore, the user can feel the folding wheelchair behind the user in advance through the position of the feet or the legs. The footrest device 50 is blocked by the user's foot or leg and transmits a force to the handle assembly 40, wherein the handle assembly 40 is driven to move toward the wheelchair frame 10, so that the seat space 100 of the wheelchair frame 10 is shortened from the user's position, and the user can more conveniently sit in the seat space 100 of the wheelchair frame 10 when sitting down, thereby avoiding the risk of the user sitting empty.

The footrest device 50 is linked to the handle assembly 40, and when the footrest device 50 is under the action of a resistance, the handle assembly 40 is driven to move synchronously, so as to adjust the distance between the seat space 100 of the wheelchair frame 10 and the position of the user.

It will be appreciated that when the user is seated, the user can adjust the distance of the foot rest device 50 by adjusting the position of the handle assembly 40, thereby adapting the position of the foot rest device 50 to the user's foot.

The footrest device 50 is detachably provided to a lower end of the handle main body 412 of the handle assembly 40, and when the folding wheelchair is folded, the footrest device 50 can be detached or folded upward to further reduce the space of the folding wheelchair. The foot rest device 50 is telescopically arranged at the lower end of the handle main body 412, and the height of the foot rest 50 from the ground is adjusted by adjusting the telescopic length of the foot rest device 50 so as to adapt to users with different heights.

The footrest device 50 includes a footrest 51 and a footrest link 52, wherein the footrest 51 is pivotally provided to the footrest link 52, the footrest link 52 is detachably and telescopically provided to the lower end of the handle body 412, and the height of the footrest 51 is adjusted by adjusting the telescopic length of the footrest link 52. The pedal plate 51 is pivotally connected to the foot rest link 52, and the pedal plate 51 can be flipped upward, so that the pedal plate 51 and the foot rest link 52 are folded, which facilitates the folding wheelchair to further reduce the occupied space.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are given by way of example only and are not limiting of the utility model. The objects of the utility model have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. A folding wheelchair, comprising:

a wheelchair frame;

2. The folding wheelchair as claimed in claim 1, wherein the front wheel support shaft of the front wheel is telescopically fitted to the wheelchair frame, and the distance between the front wheel assembly and the rear wheel assembly is adjusted by adjusting the telescopic length of the front wheel support shaft.

3. The foldable wheelchair as claimed in claim 2, wherein the front wheel support shaft comprises a telescopic sleeve shaft and a wheel shaft disposed at one end of the telescopic sleeve shaft, wherein the telescopic sleeve shaft is detachably sleeved in a front wheel shaft hole of the wheelchair frame, and the length of the front wheel extending outwards is adjusted by adjusting the telescopic length of the telescopic sleeve shaft in the front wheel shaft hole.

4. The folding wheelchair as claimed in claim 3, wherein the wheel axle is perpendicular to the telescopic sleeve shaft and is provided at one end of the telescopic sleeve shaft, the front wheel unit being coupled to the wheel axle of the front wheel support shaft.

5. The folding wheelchair as claimed in claim 4, wherein the front wheel unit is pivotably connected to the axle of the front wheel support shaft.

6. The folding wheelchair as claimed in any one of claims 1 to 5, wherein the wheelchair frame comprises a folding mechanism, frame brackets associated with the folding mechanism, and wherein the front and rear wheel assemblies are mounted to the frame brackets of the wheelchair frame, the frame brackets being located on either side of the folding mechanism.

7. The folding wheelchair as claimed in claim 6, wherein the frame includes two frame units, wherein the frame units are disposed outside the folding mechanism, wherein the frame units include a first support cross bar, a second support cross bar, at least one support longitudinal bar, and at least one fixed connecting member, wherein the fixed connecting member is disposed between the first support cross bar and the second support cross bar, and the support longitudinal bar is disposed at one end of the first support cross bar and the second support cross bar.

8. The folding wheelchair of claim 7 including a handle assembly, wherein the handle assembly is removably disposed to the frame bracket of the wheelchair frame.

9. The folding wheelchair of claim 8, wherein said handle assembly is telescopically disposed to said wheelchair frame, wherein said handle assembly is located at a forward end of said frame unit of said frame and extends forwardly from said frame unit.

10. The folding wheelchair of claim 9 wherein said handle assembly includes a two-handle arrangement, wherein said handle arrangement is removably and telescopically disposed to said second support crossbar of said frame unit.

11. The folding wheelchair as claimed in claim 10, wherein the handle means comprises a telescopic connector telescopically arranged to the second support crossbar of the rack unit and a handle body coupled to the telescopic connector.

12. The foldable wheelchair as claimed in claim 11, wherein the second support cross bar is provided with an adjustment hole, the telescopic link is provided with at least one locking hole at a position corresponding to the adjustment hole, and wherein the telescopic link is fixed to the locking hole of the telescopic link through the adjustment hole of the second support cross bar by a locking unit.

13. The foldable wheelchair as claimed in claim 12, wherein the adjusting hole of the second support cross bar is an elongated through hole, and the locking hole of the telescopic connector is a circular hole for fixing the locking unit.

14. The folding wheelchair as claimed in claim 12, wherein the second support cross bar is provided with at least one positioning hole, wherein the telescopic link is provided with a positioning groove at a position corresponding to the positioning hole, wherein the positioning hole controls the extension length of the handle assembly by a positioning unit.

15. The folding wheelchair as claimed in claim 11, wherein the telescopic connecting member comprises a telescopic member and a carrier member, wherein the carrier member is fixed to one end of the telescopic member, and the handle body is coupled to the carrier member of the telescopic connecting member.

16. The folding wheelchair of claim 11 including a footrest device coupled to the handle assembly, the footrest device being operatively coupled to the handle assembly to move the handle assembly when the footrest device is subjected to a resistance force to adjust a distance between a seat space of the wheelchair frame and a user's position.

17. The folding wheelchair as claimed in claim 16, wherein the footrest means includes a footrest plate and a footrest link, wherein the footrest plate is pivotably provided to the footrest link, the footrest link is detachably and telescopically provided to a lower end of the handle body, and a height of the footrest plate is adjusted by adjusting a telescopic length of the footrest link.

18. The folding wheelchair as claimed in claim 1, wherein the front wheel support shaft of the front wheel is telescopically fitted to the wheelchair frame, the distance between the front wheel assembly and the rear wheel assembly is adjusted by adjusting a telescopic length of the front wheel support shaft, wherein the front wheel support shaft comprises a telescopic sleeve shaft and a wheel shaft provided at one end of the telescopic sleeve shaft, wherein the telescopic sleeve shaft is detachably fitted to a front wheel shaft hole of the wheelchair frame, the length of the front wheel extending outward is adjusted by adjusting the telescopic length of the telescopic sleeve shaft within the front wheel shaft hole, wherein the wheel shaft is perpendicular to the telescopic sleeve shaft, and the wheel shaft is provided at one end of the telescopic sleeve shaft, the front wheel unit is coupled to the wheel shaft of the front wheel support shaft, wherein the front wheel unit is pivotably connected to the wheel shaft of the front wheel support shaft, wherein the wheelchair frame comprises a folding mechanism, a frame support coupled with the folding mechanism, wherein the front wheel assembly and the rear wheel assembly are disposed at the frame support of the wheelchair frame, the frame support is located at both sides of the folding mechanism, the frame support comprises two support units, wherein the support units are disposed at the outer side of the folding mechanism, wherein the support units comprise a first support cross bar, a second support cross bar, at least one support longitudinal bar, and at least one fixing connector, wherein the fixing connector is disposed between the first support cross bar and the second support cross bar, the support longitudinal bar is disposed at one end of the first support cross bar and the second support cross bar, the folding wheelchair comprises a handle assembly, wherein the handle assembly is detachably disposed at the frame support of the wheelchair frame, wherein the handle assembly is telescopically disposed at the wheelchair frame, wherein the handle assembly is located at a front end of the stand unit of the frame stand, and the handle assembly extends forward from the stand unit, wherein the handle assembly comprises two handle devices, wherein the handle devices are detachably and telescopically disposed at the second support rail of the stand unit, wherein the handle devices comprise a telescopic connector and a handle body, wherein the telescopic connector is telescopically disposed at the second support rail of the stand unit, the handle body is coupled to the telescopic connector, wherein the second support rail is provided with an adjustment hole, the telescopic connector is provided with at least one locking hole at a position corresponding to the adjustment hole, wherein the telescopic connector is fixed to the locking hole of the telescopic connector through the adjustment hole of the second support rail by a locking unit, wherein the adjusting hole of the second supporting cross bar is a long strip-shaped through hole, the locking hole of the telescopic connecting piece is a round hole for fixing the locking unit, the second supporting cross bar is provided with at least one positioning hole, the telescopic connecting piece is provided with a positioning groove at a position corresponding to the positioning hole, the positioning hole controls the extension length of the handle assembly through the positioning unit, the telescopic connecting piece comprises a telescopic piece and a bearing piece, the bearing piece is fixed at one end of the telescopic piece, the handle body is coupled to the bearing piece of the telescopic connecting piece, the folding wheelchair comprises a foot rest device, the foot rest device is coupled to the handle assembly and linked with the handle assembly, and when the foot rest device is under the action of resistance, the handle assembly can be driven to move, so as to adjust the distance between the seat space of the wheelchair frame and the position of the user, wherein the footrest device comprises a footrest and a footrest connecting rod, wherein the footrest is pivotally arranged at the footrest connecting rod, the footrest connecting rod is detachably and telescopically arranged at the lower end of the handle body, and the height of the footrest is adjusted by adjusting the telescopic length of the footrest connecting rod.