Wheelchair frame with adjustable width and wheelchair

Abstract

The utility model discloses a wheelchair frame with adjustable width, which belongs to the technical field of wheelchairs, and comprises two brackets arranged opposite to each other, and a connecting pipe group and a pedal arranged between the two brackets, wherein the bracket comprises a seat tube for mounting a wheelchair cushion, and a back tube and a leg tube arranged at both ends of the seat tube, an axle main tube for mounting the rear wheelchair wheelchair is installed on the seat tube, a pedal adjustment tube is arranged at one end of the leg tube, the pedal is installed on the pedal adjustment tube, a wheel mounting tube is connected to the leg tube, an auxiliary tube is connected to the seat tube, and the connecting pipe group comprises a main connecting tube and an auxiliary connecting tube, wherein the main connecting tube is relatively slidably arranged between the two axle main tubes and connected by a first fixing assembly, and the auxiliary connecting tube is relatively slidably arranged between the two auxiliary tubes and connected by a second fixing assembly. The utility model can adjust the width between the front and rear wheels at the same time, and meets the use requirements of different users. The utility model also discloses a wheelchair with the above-mentioned frame.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchairs, in particular to a wheelchair frame with adjustable width and a wheelchair. Background Art

[0002] Wheelchairs are an important means of transportation for the injured, sick, and disabled to recover at home, for turnover transportation, for medical treatment, and for outdoor activities, and are widely used in various environments. The comfort of using a wheelchair is closely related to the degree of match between the wheelchair and the user's body. For example, children's bodies will gradually grow larger as they grow older, and at this time, a wider wheelchair is needed to meet the riding requirements; for another example, wheelchairs used to transfer patients in hospitals need to be configured with wheelchairs of different widths according to patients of different body sizes. If wheelchairs of different widths are replaced according to the deformation of the body shape, it will undoubtedly increase the cost of use. At this time, wheelchairs with adjustable widths are gradually appearing on the market. For example, a Chinese patent document with the announcement number CN218739378U discloses a wheelchair support vehicle with adjustable seat width, which has a connecting block on one side of the adjustment seat, and the end of the connecting block is connected to a side beam for installing an armrest. A plurality of fixing holes are evenly spaced on the connecting block, and the fixing holes can correspond to the connecting through holes on the adjustment seat. The fixing screws pass through the connecting holes and the fixing holes and then extend into the threaded holes for fixing. Different fixing holes correspond to different extension lengths of the side beams, so as to adjust the distance between the two side beams to facilitate the installation of a wider seat cushion. Although the above scheme can adjust the seat cushion, it cannot adjust the width between the wheelchair wheels on both sides, which results in the space between the front wheels on both sides for placing the legs remaining the original size. Obviously, the smaller space cannot meet the placement needs of users with larger legs, thereby affecting the comfort. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in the prior art, when the width of the seat cushion of a wheelchair is adjusted, the width between the front and rear wheels cannot be adjusted, and it is difficult to meet the usage needs of users of different body shapes. In view of this, the utility model provides a wheelchair frame with adjustable front and rear wheel widths.

[0004] The utility model also provides a wheelchair with the wheelchair frame.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a wheelchair frame with adjustable width, comprising two relatively arranged brackets and a connecting pipe group and a foot pedal arranged between the two brackets, the bracket comprising a seat tube for mounting a wheelchair seat cushion and a back tube and a leg tube arranged at both ends of the seat tube, the seat tube is provided with an axle main tube for mounting the rear wheel of the wheelchair, one end of the leg tube is provided with a pedal adjustment tube, the foot pedal is mounted on the pedal adjustment tube, the leg tube is connected with a wheel mounting tube for mounting the front wheel of the wheelchair, the seat tube is connected with an auxiliary tube, the connecting pipe group comprises a main connecting tube and an auxiliary connecting tube, the main connecting tube is relatively slidably arranged between the two axle main tubes and connected by a first fixing component, and the auxiliary connecting tube is relatively slidably arranged between the two auxiliary tubes and connected by a second fixing component.

[0006] Furthermore, two ends of the main connecting pipe are respectively inserted into the two axle main pipes, and two ends of the auxiliary connecting pipe are respectively inserted into the two auxiliary pipes.

[0007] Furthermore, a first through hole is opened on the side wall of the axle main pipe, and a plurality of first fixing holes are opened on the main connecting pipe along the length direction. The first through hole can be aligned with any one of the first fixing holes, and the first through hole and the first fixing holes are connected by the first fixing assembly.

[0008] Furthermore, the first fixing assembly includes a fixing bolt and a locking nut, the fixing bolt passes through the first through hole and the first fixing hole, and the locking nut is installed at one end of the fixing bolt.

[0009] Furthermore, a second through hole is opened on the side wall of the auxiliary tube, and a plurality of second fixing holes are opened on the auxiliary connecting tube along the length direction. The second through hole can be aligned with any one of the second fixing holes, and the second through hole and the second fixing hole are connected by the second fixing assembly.

[0010] Furthermore, the axle main tube includes a longitudinal tube and a transverse tube connected to each other, the upper end of the longitudinal tube is fixedly connected to the seat tube via a first clamp, the main connecting tube is connected to the transverse tube, the rear wheel of the wheelchair is installed at the connection between the longitudinal tube and the transverse tube, and the first through hole is opened on the transverse tube.

[0011] Furthermore, the pedal adjustment tube is in an L-shaped structure, one end of the pedal adjustment tube is slidably inserted into the leg tube, and the foot pedal is fixedly mounted on the other end of the pedal adjustment tube.

[0012] Furthermore, a second clamp is fixedly mounted on the bottom of the foot pedal, and one end of the foot pedal adjustment tube is fixedly connected to the second clamp.

[0013] Furthermore, a plurality of first pin holes are formed on the pedal adjustment tube, a second pin hole is formed on the leg tube, and the first pin holes are connected to the second pin holes by a fixing pin.

[0014] The utility model also provides a wheelchair, comprising the width-adjustable wheelchair frame as described in any of the aforementioned items, and also comprising a wheelchair seat cushion, a wheelchair front wheel and a wheelchair rear wheel, wherein the wheelchair seat cushion is mounted on the seat tube, the wheelchair front wheel is mounted on the axle main tube, and the wheelchair rear wheel is mounted on the wheel mounting tube.

[0015] The beneficial effects of the utility model are as follows: the wheelchair frame or wheelchair with adjustable width of the utility model can adjust the width of the front wheels and the width of the rear wheels of the wheelchair at the same time by adjusting the width between the two brackets, while meeting the need to install seat cushions of different widths, the space between the front wheels on both sides for placing the legs can also be adjusted to meet the needs of users of different body shapes, greatly improving the comfort of wheelchair use, and at the same time, the connecting pipe group used to connect the two brackets can improve the structural strength of the brackets and has high reliability in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a three-dimensional diagram of the wheelchair frame with adjustable width of the utility model;

[0018] Figure 2 yes Figure 1 An exploded view of the wheelchair frame with adjustable width is shown;

[0019] Figure 3 yes Figure 1 A partial enlarged view of point A in the frame of the wheelchair with adjustable width is shown.

[0020] In the figure: 1, bracket, 11, seat tube, 12, back tube, 13, foot tube, 131, second pin hole, 14, axle main tube, 140, first through hole, 141, longitudinal tube, 142, transverse tube, 143, first clamp, 15, pedal adjustment tube, 151, first pin hole, 16, wheel mounting tube, 17, auxiliary tube, 171, second through hole, 2, connecting tube group, 21, main connecting tube, 211, first fixing hole, 22, auxiliary connecting tube, 221, second fixing hole, 3, pedal, 31, second clamp, 4, first fixing assembly, 41, fixing bolt, 42, locking nut, 5, second fixing assembly. DETAILED DESCRIPTION

[0021] Now the utility model is described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the utility model in a schematic manner, so it only shows the components related to the utility model.

[0022] See also Figure 1-Figure 3 The utility model provides a wheelchair frame with adjustable width, comprising two brackets 1 arranged opposite to each other, and a connecting pipe group 2 and a foot pedal 3 connected between the two brackets 1. The bracket 1 comprises a seat tube 11 for mounting a wheelchair cushion, and a back tube 12 and a leg tube 13 respectively connected to opposite ends of the seat tube 11. An axle main tube 14 for mounting a rear wheel of the wheelchair is mounted on one end of the seat tube 11 close to the back tube 12, and a pedal adjustment tube 15 is telescopically arranged on one end of the leg tube 13 away from the seat tube 11. The foot pedal 3 is mounted on the pedal adjustment tube 15, and a wheel mounting tube 16 for mounting a front wheel of the wheelchair is connected to the leg tube 13. An auxiliary tube 17 is fixedly connected to the seat tube 11. The connecting pipe group 2 comprises a main connecting tube 21 and an auxiliary connecting tube 22. The main connecting tube 21 is relatively slidably connected between the two axle main tubes 14 and connected through a first fixing component 4, and the auxiliary connecting tube 22 is relatively slidably connected between the two auxiliary tubes 17 and connected through a second fixing component 5.

[0023] The width-adjustable wheelchair frame of the utility model has brackets 1 on both sides that are two independent structures. The two brackets 1 can move along the width direction (i.e., in the direction of approaching or moving away from each other). During the movement, the main connecting tube 21 slides relative to the axle main tube 14, and the auxiliary connecting tube 22 slides relative to the auxiliary tube 17. After sliding into place, the main connecting tube 21 is locked on the axle main tube 14 through the first fixing component 4, and the auxiliary connecting tube 22 is locked on the auxiliary tube 17 through the second fixing component 5. In this way, the two brackets 1 are fixedly connected together through the connecting tube group 2, and the user can select a wheelchair cushion of an appropriate size and fix it on the seat tube 11. By adjusting the width between the two brackets 1, the width between the front and rear wheels of the wheelchair is also adjusted, ensuring that the front side of the wheelchair has a wide enough space for the user's legs to be placed.

[0024] As a preferred embodiment, the two ends of the main connecting tube 21 are respectively inserted into the two axle main tubes 14, and the two ends of the auxiliary connecting tube 22 are respectively inserted into the two auxiliary tubes 17. In addition, the main connecting tube 21 and the auxiliary connecting tube 22 are both circular tubular structures. It can be understood that in other embodiments not shown, the main connecting tube 21 can be slidably sleeved on the outside of the axle main tube 14, and the auxiliary connecting tube 22 can be slidably sleeved on the outside of the auxiliary tube 17, which can also achieve the adjustment of the width between the two brackets 1. Of course, the cross-sections of the main connecting tube 21 and the auxiliary connecting tube 22 can also be rectangular, elliptical or other special shapes, which are not limited here.

[0025] In this embodiment, a first through hole 140 is provided on the side wall of the axle main pipe 14, and a plurality of first fixing holes 211 are provided on the main connecting pipe 21 along the length direction. The first through hole 140 can be aligned with any first fixing hole 211, and the first through hole 140 and the first fixing hole 211 are connected by a first fixing component 4. When adjusting the width between two brackets 1, after the width is adjusted to the right position, the user can fix the first through hole 140 with a corresponding first fixing hole 211 through the first fixing component 4. In a specific embodiment, three first fixing holes 211 are provided on each main connecting pipe 21 and are arranged at equal intervals to achieve multi-level adjustment. In specific implementation, under the premise of ensuring the structural strength, the adjustment accuracy of the bracket 1 can be controlled by controlling the setting distance between two adjacent first fixing holes 211.

[0026] As a preferred embodiment, the first fixing assembly 4 includes a fixing bolt 41 and a locking nut 42. The fixing bolt 41 passes through the first through hole 140 and the first fixing hole 211, and the locking nut 42 is installed at one end of the fixing bolt 41, so that the main spindle tube 14 is locked on the main connecting tube 21. In other embodiments, the locking nut 42 can also be omitted. In this case, the fixing bolt 41 is directly threadedly connected to the main spindle tube 14 and the main connecting tube 21 to achieve a fixing effect.

[0027] In this embodiment, a second through hole 171 is provided on the side wall of the auxiliary tube 17, and a plurality of second fixing holes 221 are provided on the auxiliary connecting tube 22 along the length direction. The second through hole 171 can be aligned with any second fixing hole 221, and the second through hole 171 and the second fixing hole 221 are connected by a second fixing assembly 5. The distance between two adjacent second fixing holes 221 is the same as the distance between two adjacent first fixing holes 211, so that when the main spindle tube 14 and the main connecting tube 21 are fixedly connected by the first fixing assembly 4, the auxiliary tube 17 and the auxiliary connecting tube 22 can be fixedly connected by the second fixing assembly 5. In this embodiment, the number of the second fixing holes 221 is the same as the number of the first fixing holes 211, and the structure and connection method of the second fixing assembly 5 are the same as the first fixing assembly 4, which will not be repeated here. By setting the auxiliary tube 17 to be connected with the auxiliary connecting tube 22, on the one hand, the structural strength of the bracket 1 itself can be improved, and on the other hand, the connection between the two brackets 1 can be strengthened, making the connection more reliable and effectively preventing the brackets 1 from being easily detached.

[0028] As a preferred embodiment, the axle main tube 14 includes a longitudinal tube 141 and a transverse tube 142 which are connected to each other. The upper end of the longitudinal tube 141 is fixedly connected to the seat tube 11 through a first clamp 143. The main connecting tube 21 is connected to the transverse tube 142. The rear wheel of the wheelchair is installed at the connection between the longitudinal tube 141 and the transverse tube 142. The first through hole 140 is opened on the transverse tube 142.

[0029] The pedal adjustment tube 15 is in an L-shaped structure, one end of the pedal adjustment tube 15 can be slidably inserted into the leg tube 13, and the footrest 3 is fixedly installed at the other end of the pedal adjustment tube 15. In this embodiment, a plurality of first pin holes 151 are provided on the pedal adjustment tube 15, and a second pin hole 131 is provided on the leg tube 13. The first pin hole 151 and the second pin hole 131 are connected by a fixing pin. When in use, the height of the footrest 3 can be adjusted by adjusting the length of the pedal adjustment tube 15 inserted into the leg tube 13. After the height is adjusted to the right position, the fixing pin can be passed through the second pin hole 13 and the corresponding first pin hole 151 to achieve a fixing effect.

[0030] In addition, a second clamp 31 is fixedly installed at the bottom of the pedal 3, and one end of the pedal adjustment tube 15 is fixedly connected to the second clamp 31. In specific implementation, the length of the second clamp 31 is designed to be longer so that when the width between the two brackets 1 is adjusted, the pedal adjustment tube 15 can be connected to the second clamp 31.

[0031] As a preferred embodiment, the back tube 12 is also connected to an auxiliary tube 17 , and an auxiliary connecting tube 22 may be provided between the two auxiliary tubes 17 and connected through a second fixing assembly 5 , thereby further improving the connection reliability between the two brackets 1 .

[0032] The utility model also provides a wheelchair, which includes the above-mentioned wheelchair frame, and also includes a wheelchair seat cushion, a wheelchair front wheel and a wheelchair rear wheel, the wheelchair seat cushion is installed on the seat tube 11, the wheelchair front wheel is installed on the axle main tube 14, and the wheelchair rear wheel is installed on the wheel mounting tube 16.

[0033] The wheelchair frame or wheelchair with adjustable width of the utility model can adjust the width of the front wheels and the width of the rear wheels of the wheelchair at the same time by adjusting the width between the two brackets 1. While satisfying the need to install seat cushions of different widths, the space between the front wheels on both sides for placing the legs can also be adjusted to meet the needs of users of different body shapes, greatly improving the comfort of wheelchair use. At the same time, the connecting pipe group 2 used to connect the two brackets 1 can improve the structural strength of the bracket 1 and has high reliability in use.

[0034] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the scope of the utility model through the above description. The technical scope of this utility model is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A wheelchair frame with adjustable width, characterized in that: The wheelchair wheelchair comprises two brackets arranged opposite to each other and a connecting pipe group and a pedal arranged between the two brackets, the bracket comprises a seat tube for mounting a wheelchair seat cushion and a back tube and a leg tube arranged at both ends of the seat tube, the seat tube is provided with an axle main tube for mounting the rear wheel of the wheelchair, one end of the leg tube is provided with a pedal adjustment tube, the foot pedal is mounted on the pedal adjustment tube, the leg tube is connected with a wheel mounting tube for mounting the front wheel of the wheelchair, the seat tube is connected with an auxiliary tube, the connecting pipe group comprises a main connecting tube and an auxiliary connecting tube, the main connecting tube is relatively slidably arranged between the two axle main tubes and connected by a first fixing component, the auxiliary connecting tube is relatively slidably arranged between the two auxiliary tubes and connected by a second fixing component.

2. The width-adjustable wheelchair frame according to claim 1, characterized in that: The two ends of the main connecting pipe are respectively inserted into the two axle main pipes, and the two ends of the auxiliary connecting pipe are respectively inserted into the two auxiliary pipes.

3. The wheelchair frame with adjustable width as claimed in claim 2, characterized in that: A first through hole is provided on the side wall of the axle main pipe, and a plurality of first fixing holes are provided on the main connecting pipe along the length direction. The first through hole can be aligned with any of the first fixing holes, and the first through hole and the first fixing holes are connected via the first fixing assembly.

4. The width-adjustable wheelchair frame according to claim 3, characterized in that: The first fixing assembly includes a fixing bolt and a locking nut. The fixing bolt passes through the first through hole and the first fixing hole. The locking nut is installed at one end of the fixing bolt.

5. The width-adjustable wheelchair frame according to claim 2, characterized in that: A second through hole is provided on the side wall of the auxiliary tube, and a plurality of second fixing holes are provided on the auxiliary connecting tube along the length direction. The second through hole can be aligned with any one of the second fixing holes, and the second through hole and the second fixing hole are connected via the second fixing assembly.

6. The wheelchair frame with adjustable width as claimed in claim 3, characterized in that: The axle main pipe includes a longitudinal pipe and a transverse pipe connected to each other, the upper end of the longitudinal pipe is fixedly connected to the seat pipe through a first clamp, the main connecting pipe is connected to the transverse pipe, the rear wheel of the wheelchair is installed at the connection between the longitudinal pipe and the transverse pipe, and the first through hole is opened on the transverse pipe.

7. The width-adjustable wheelchair frame according to claim 1, characterized in that: The pedal adjustment tube is in an L-shaped structure. One end of the pedal adjustment tube can be slidably inserted into the leg tube, and the foot pedal is fixedly mounted on the other end of the pedal adjustment tube.

8. The wheelchair frame with adjustable width as claimed in claim 7, characterized in that: A second clamp is fixedly mounted on the bottom of the pedal, and one end of the pedal adjustment tube is fixedly connected to the second clamp.

9. The width-adjustable wheelchair frame according to claim 7, characterized in that: The pedal adjustment tube is provided with a plurality of first pin holes, the leg tube is provided with a second pin hole, and the first pin holes are connected with the second pin holes by a fixing pin.

10. A wheelchair, characterized in that: A wheelchair frame with adjustable width comprising any one of claims 1 to 9, further comprising a wheelchair seat, a wheelchair front wheel and a wheelchair rear wheel, wherein the wheelchair seat is mounted on the seat tube, the wheelchair front wheel is mounted on the axle main tube, and the wheelchair rear wheel is mounted on the wheel mounting tube.

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