CN219963286U - Width-adjustable wheelchair seat frame - Google Patents

Abstract

The utility model discloses a wheelchair seat frame with adjustable width, which comprises a seat frame assembly and a backrest frame assembly, wherein the backrest frame assembly is connected to the seat frame assembly; the seat frame assembly comprises a first supporting tube and a second supporting tube; the first support tube and the second support tube are arranged at intervals, a first connecting tube is arranged on the first support tube, and a second connecting tube is arranged on the second support tube; the first connecting pipe and the second connecting pipe can be movably connected, so that the interval between the first supporting pipe and the second supporting pipe can be adjusted. The first support tube and the second support tube on the seat frame assembly are arranged at intervals, the first connection tube and the second connection tube are respectively arranged on the first support tube and the second support tube, the interval distance between the first support tube and the second support tube is adjustable in a movable connection mode through the first connection tube and the second connection tube, and therefore the whole seat frame assembly can be adjusted at any time along with the growth of the child body constitution, the whole seat is not required to be replaced, and the use cost is saved.

Description

Width-adjustable wheelchair seat frame

Technical Field

The utility model relates to the field of medical supplies, in particular to a wheelchair seat frame with adjustable width.

Background

The wheelchair is provided with wheels and can help to replace a walking chair, is an important moving tool for helping disabled persons to recover at home and go out, is divided into an adult wheelchair and a child wheelchair for different people, the wheelchair seat frame is a main component part of the wheelchair, the child wheelchair seat frame on the market at present is always all detachably adjusted by adopting an integral seat frame, as the child still grows, the distance between the original wheelchair seat frame parts is reduced due to the growth of the child's body size, so that the original wheelchair cannot be used any more, the wheelchair with the new specification and size can be purchased again according to the child's body size at the moment, the wheelchair price is generally relatively expensive, and the use cost is increased intangibly if the whole wheelchair is replaced regularly along with the growth of the child body size.

Disclosure of Invention

In order to overcome at least one of the above-mentioned drawbacks of the prior art, the present utility model provides a width-adjustable wheelchair seat frame, the spacing between the seat frame components of which can be adjusted and removed according to the needs of the user.

The utility model adopts the technical proposal for solving the problems that:

the width-adjustable wheelchair seat frame comprises a seat frame assembly and a backrest frame assembly, wherein the backrest frame assembly is connected to the seat frame assembly; the seat frame assembly comprises a first supporting tube and a second supporting tube; the first support tube and the second support tube are arranged at intervals, a first connecting tube is arranged on the first support tube, and a second connecting tube is arranged on the second support tube; the first connecting pipe and the second connecting pipe can be movably connected, so that the interval between the first supporting pipe and the second supporting pipe can be adjusted.

Further, the backrest frame assembly comprises a first backrest pipe and a second backrest pipe, and the first backrest pipe and the second backrest pipe are arranged at intervals; the first backrest tube is provided with a third connecting tube, the second backrest tube is provided with a fourth connecting tube, and the third connecting tube is movably connected with the fourth connecting tube, so that the interval between the first backrest tube and the second backrest tube is adjustable.

Further, a first connecting piece is arranged at the joint of the first connecting pipe and the second connecting pipe, one end of the first connecting piece is detachably mounted on the first connecting pipe, and the other end of the first connecting piece is detachably mounted on the second connecting pipe, so that the first connecting pipe and the second connecting pipe can be movably connected.

Further, a first connecting part is arranged at the end part of the first connecting pipe, and a second connecting part is arranged at the end part of the second connecting pipe; the first connecting part is arranged opposite to the second connecting part; the first connecting part and the second connecting part are respectively provided with a plurality of clamping parts; the first connecting piece is provided with a plurality of clamping holes, and the clamping holes are arranged in one-to-one correspondence with the clamping parts, so that the first connecting piece is clamped on the first connecting part and the second connecting part, and the first connecting pipe and the second connecting pipe can be movably connected.

Further, a concave position groove is formed in the first connecting piece, the concave position groove is located between two adjacent clamping holes, a through hole is further formed in the concave position groove, and the through hole is used for being connected with the connecting piece in a through mode; the first connecting part and the second connecting part are also provided with mounting holes, and the mounting holes are arranged between two adjacent clamping parts and correspond to the through holes, so that the connecting piece is connected to the mounting holes through the through holes in a penetrating way.

Further, a second connecting piece is arranged at the joint of the third connecting pipe and the fourth connecting pipe, one end of the second connecting piece is detachably mounted on the third connecting pipe, and the other end of the second connecting piece is detachably mounted on the fourth connecting pipe, so that the third connecting pipe and the fourth connecting pipe can be movably connected.

Further, a third connecting part is arranged on the third connecting pipe, a fourth connecting part is arranged on the fourth connecting pipe, and the third connecting part is opposite to the fourth connecting part; the third connecting part and the fourth connecting part are respectively provided with a plurality of clamping blocks, the second connecting part is provided with a plurality of clamping holes, and the clamping holes are arranged in one-to-one correspondence with the clamping blocks, so that the second connecting part is clamped on the third connecting part and the fourth connecting part, and the first backrest tube is movably connected with the second backrest tube.

Further, the second connecting piece is provided with a plurality of first threaded holes, and the first threaded holes are used for penetrating through bolts; the third connecting part and the fourth connecting part are provided with a plurality of second threaded holes; the plurality of second threaded holes are arranged in one-to-one correspondence with the plurality of first threaded holes, and are used for enabling bolts to pass through the first threaded holes to be connected to the second threaded holes in a penetrating mode.

Further, the bottom end of the first support tube is connected with a first pedal tube in a penetrating way, and the bottom end of the second support tube is connected with a second pedal tube in a penetrating way; the pedal assembly is sleeved at the joint of the first pedal tube and the second pedal tube and used for fixing the first pedal tube and the second pedal tube.

Further, a first rotary connecting shaft is arranged at the bottom end of the first backrest pipe and sleeved on the first supporting pipe so that the first backrest pipe and the first supporting pipe can be rotatably connected; the bottom end of the second backrest tube is provided with a second rotating connecting shaft which is sleeved on the second supporting tube, so that the second backrest tube is rotatably connected with the second supporting tube.

In summary, the width-adjustable wheelchair seat frame provided by the utility model has the following technical effects: the first support tube and the second support tube on the seat frame assembly are arranged at intervals, the first connection tube and the second connection tube are respectively arranged on the first support tube and the second support tube, the interval distance between the first support tube and the second support tube is adjustable in a movable connection mode through the first connection tube and the second connection tube, and therefore the whole seat frame assembly can be adjusted at any time along with the growth of the child body constitution, the whole seat is not required to be replaced, and the use cost is saved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a mounting assembly according to the present utility model;

FIG. 3 is a schematic view of a first connector according to the present utility model;

FIG. 4 is a schematic view of a back rest assembly according to the present utility model;

FIG. 5 is a schematic view of a second connector according to the present utility model;

wherein the reference numerals have the following meanings:

10. a first support tube; 11. a first connection pipe; 12. a clamping part; 13. a mounting hole; 20. a second support tube; 21. a second connection pipe; 30. a first back tube; 31. a third connection pipe; 32. a second threaded hole; 33. a third connecting portion; 34. a fourth connecting portion; 35. a clamping block; 40. a second backrest tube; 41. a fourth connection pipe; 51. a first connector; 511. a clamping hole; 512. penetrating the hole; 52. a second connector; 521. a clamping hole; 522. a first threaded hole; 53. a concave groove; 61. a first rotational connection shaft; 62. a second rotary connecting shaft; 70. a foot pedal assembly; 71. a first foot pedal tube; 72. a second pedal tube; 81. a first connection portion; 82. and a second connecting part.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 to 5, the utility model discloses a wheelchair seat frame with adjustable width, which comprises a seat frame component and a backrest frame component, wherein the backrest frame component is arranged on the seat frame component, the seat frame component comprises a first support tube 10 and a second support tube 20, the first support tube 10 and the second support tube 20 are arranged at intervals, a first connecting tube 11 is arranged on the first support tube 10, a second connecting tube 21 is arranged on the second support tube 20, and the interval between the first support tube 10 and the second support tube 20 is adjustable by movably connecting the first connecting tube 11 and the second connecting tube 21.

On the basis of the above structure, when the whole wheelchair seat frame is assembled, because the seat frame assembly comprises the first support tube 10 and the second support tube 20, the first support tube 10 and the second support tube 20 are arranged at intervals, so that an interval distance is reserved between the first support tube 10 and the second support tube 20, then the first connection tube 11 is arranged on the first support tube 10, the second connection tube 21 is arranged on the second support tube 20, and the interval distance between the first support tube 10 and the second support tube 20 is adjustable in a movable connection mode through the first connection tube 11 and the second connection tube 21.

Specifically, when the user is a child, if the child grows along with the age, and the size of the child is synchronous, the original distance between the seat frames cannot meet the size requirement of the child any more, because the first support tube 10 and the second support tube 20 arranged on the seat frame assembly are arranged at intervals, the distance between the first support tube 10 and the second support tube 20 is kept between the first support tube 11 and the second support tube 20, and the first connection tube 11 and the second connection tube 21 for connecting the first support tube 10 and the second support tube 20 are movably connected with each other, so that the distance between the first support tube 10 and the second support tube 20 can be adjusted, when the size of the child grows, the distance between the seat assemblies needs to be adjusted to be wide, the first support tube 10 and the second support tube 20 can be separated from each other, and at the moment, the distance between the first connection tube 11 and the second connection tube 21 can be moved along with the first support tube 10 and the second support tube 20 when the distance between the first support tube 10 and the second support tube 20 is increased, and the distance between the first support tube 10 and the second support tube 20 is adjusted to be suitable for adjusting the distance between the first support tube 10 and the second support tube 20.

Of course, if the distance between the seat assembly needs to be narrowed, the first support tube 10 and the second support tube 20 are made to approach each other, and then, since the first connection tube 11 and the second connection tube 21 are movably connected, when the distance between the first support tube 10 and the second support tube 20 becomes smaller, the first connection tube 11 and the second connection tube 21 can move along with the first support tube 10 and the second support tube 20, and approach each other, so that the distance between the first support tube 10 and the second support tube 20 is small, and the distance between the first support tube 10 and the second support tube 20 can be adjusted to a proper position, so that the whole seat assembly can be adjusted at any time according to the physical change of a child, the whole wheelchair is not required to be replaced, and the use cost is saved.

Preferably, when the seat frame assembly is assembled according to a proper interval distance, the backrest frame assembly is installed on the seat frame assembly, so that the back of the whole user is also provided with a supporting point when the wheelchair is used, and the wheelchair is more comfortable to use.

Further, the backrest frame assembly comprises a first backrest pipe 30 and a second backrest pipe 40, the first backrest pipe 30 and the second backrest pipe 40 are arranged at intervals, a third connecting pipe 31 is arranged on the first backrest pipe 30, a fourth connecting pipe 41 is arranged on the second backrest pipe 40, and the third connecting pipe 31 and the fourth connecting pipe 41 are movably connected, so that the interval distance between the first backrest pipe 30 and the second backrest pipe 40 is adjustable.

Specifically, the first backrest pipe 30 and the second backrest pipe 40 are arranged at a distance, so that a distance is left between the first backrest pipe 30 and the second backrest pipe 40, the third connecting pipe 31 is arranged on the first backrest pipe 30, the fourth connecting pipe 41 is arranged on the second backrest pipe 40, and the third connecting pipe 31 and the fourth connecting pipe 41 are movably connected, so that the distance between the first backrest pipe 30 and the second backrest pipe 40 can be adjusted at any time.

It should be noted that, when the interval between the seat frame components needs to be widened due to the requirement of the user, the backrest frame components also need to be adjusted correspondingly so as not to affect the use of the whole seat frame components, at this time, because the third connecting pipe 31 and the fourth connecting pipe 41 adopt a movable connection mode, when the interval between the first backrest pipe 30 and the second backrest pipe 40 becomes larger, the third connecting pipe 31 and the fourth connecting pipe 41 can move along with the first backrest pipe 30 and the second backrest pipe 40, and are far away from each other so that the interval between the first backrest pipe 30 and the second backrest pipe 40 becomes larger, and therefore, the interval between the first backrest pipe 30 and the second backrest pipe 40 is increased to a proper position, and therefore, when the interval between the first backrest pipe 30 and the second backrest pipe 40 is consistent with the interval between the first supporting pipe 10 and the second supporting pipe 20, the interval between the third connecting pipe 31 and the fourth connecting pipe 41 is also required to be adjusted, and when the interval between the first backrest pipe 30 and the second backrest pipe 40 is close to each other, the interval between the third backrest pipe 31 and the second backrest pipe 40 is also changed along with the movable connection pipe 41, and the interval between the second backrest pipe 40 is reduced along with the interval between the seat frame components and the second backrest pipe 40 is changed, and the interval between the second backrest pipe and the seat frame components is reduced more reliably.

Further, the first connecting pipe 11 and the second connecting pipe 21 are provided with a first connecting piece 51, and one end of the first connecting piece 51 is detachably mounted on the first connecting pipe 11, and the other end of the first connecting piece 51 is detachably mounted on the second connecting pipe 21, so that the first connecting pipe 11 and the second connecting pipe 21 can be movably connected.

Specifically, in order to make the first connecting pipe 11 and the second connecting pipe 21 movably connected, a detachable first connecting piece 51 may be disposed at the connection position of the first connecting pipe 11 and the second connecting pipe 21, by detachably mounting one end of the first connecting piece 51 on the first connecting pipe 11 and detachably mounting the other end of the first connecting piece 51 on the second connecting pipe 21, the first connecting pipe 11 and the second connecting pipe 21 are connected and fixed, when the first connecting pipe 11 and the second connecting pipe 21 need to be detached, only the first connecting piece 51 needs to be detached to complete the operation, so that the first connecting pipe 11 and the second connecting pipe 21 can be detached or connected at any time, when the distance between the first supporting pipe 10 and the second supporting pipe 20 needs to be adjusted, only the original first connecting piece 51 needs to be detached, the first connecting pipe 11 and the second connecting pipe 21 need to be detached, the first supporting pipe 10 and the second supporting pipe 20 need to be adjusted to be at a proper position by mutually keeping away from or approaching each other, when the distance between the first supporting pipe 10 and the second supporting pipe 20 needs to be replaced, and when the first connecting pipe 21 needs to be replaced with the new connecting pipe 21 needs to be replaced, and the whole connecting pipe assembly needs to be replaced, and the assembly needs not to be replaced.

It should be noted that, the manner of movably connecting the first connecting pipe 11 and the second connecting pipe 21 may also be a manner of movably sleeving the hollow pipe at the connection position of the first connecting pipe 11 and the second connecting pipe 21, so that the first connecting pipe 11 and the second connecting pipe 21 may be detachably connected by sleeving or removing the hollow pipe, however, since the first supporting pipe 10 and the second supporting pipe 20 are disposed at intervals, when the interval between the first supporting pipe 10 and the second supporting pipe 20 needs to be enlarged, the hollow pipe connection manner is adopted, the space may be easily bent due to the stress of the hollow structure of the hollow pipe, thereby indirectly affecting the use of the seat frame assembly and causing a potential safety hazard.

Preferably, the first connecting member 51 in this embodiment may be an existing bolt member or a movable bolt member, which may be used to movably connect the first connecting tube 11 and the second connecting tube 21.

Further, a first connecting portion 81 is provided at the end of the first connecting tube 11, a second connecting portion 82 is provided at the end of the second connecting tube 21, the first connecting portion 81 and the second connecting portion 82 are opposite to each other, a plurality of clamping portions 12 are provided on the first connecting portion 81 and the second connecting portion 82, a plurality of clamping holes 511 are provided on the first connecting member 51, the plurality of clamping holes 511 and the plurality of clamping portions 12 are arranged in one-to-one correspondence, so that the first connecting member 51 is clamped on the first connecting portion 81 and the second connecting portion 82, and the first connecting tube 11 and the second connecting tube 21 can be movably connected.

Specifically, the first connecting pipe 11 is provided with the first connecting portion 81 at the end portion thereof, the second connecting portion 82 at the end portion of the second connecting pipe 21 is provided with the second connecting portion 82, and the first connecting portion 81 and the second connecting portion 82 are respectively provided with the plurality of clamping portions 12, in addition, the first connecting member 51 is further provided with the plurality of clamping holes 511, and the plurality of clamping portions 511 are arranged in one-to-one correspondence with the plurality of clamping portions 12, and the first connecting portion 81 and the second connecting portion 82 are arranged opposite to each other, so that when the first connecting pipe 11 and the second connecting pipe 21 need to be connected, one end of the first connecting member 51 can be clamped on the clamping portion 12 at the first connecting portion through the clamping holes 511, and then the other end of the first connecting member 51 is clamped on the clamping portion 12 at the second connecting portion through the clamping holes 511, so that the first connecting pipe 11 and the second connecting pipe 21 are connected, and when the first connecting pipe 11 and the second connecting pipe 21 need to be separated, the first connecting member 51 can be removed from the clamping holes 511 at the second connecting portion.

The first connector 51 may be fixed to the first and second connection portions 81 and 82 by using a detachable fixing jig or a bolt.

Further, the first connecting piece 51 is provided with a recess 53, the recess 53 is located between two adjacent clamping holes 511, a through hole 512 is further provided in the recess 53, the through hole 512 is used for connecting the connecting piece in a through mode, the first connecting portion 81 and the second connecting portion 82 are further provided with mounting holes 13, and the mounting holes 13 are located between two adjacent clamping portions 12 and are correspondingly arranged with the through hole 512, so that the connecting piece is connected to the mounting holes 13 in a through mode through the through hole 512.

Specifically, since the concave slot 53 is disposed between two adjacent clamping holes 511 on the first connecting member 51, the through holes 512 are disposed in the concave slot 53, and the mounting holes 13 are disposed on the first connecting portion 81 and the second connecting portion 82, the connecting member can be connected to the mounting hole 13 through the through holes 512 by correspondingly disposing the mounting holes 13 and the through holes 512 in the concave slot 53, so that the first connecting portion 81 and the second connecting portion 82 are connected more firmly, and the through holes 512 are disposed in the concave slot 53, when the connecting member is connected to the first connecting member 51 in a penetrating manner, the end portion of the connecting member can be hidden in the concave slot 53, and the connection between the first connecting portion 81 and the second connecting portion 82 is more attractive.

It should be noted that, the connecting piece in this embodiment may be a connecting piece such as a screw or a nut.

Further, a second connecting piece 52 is provided at the connection position of the third connecting pipe 31 and the fourth connecting pipe 41, one end of the second connecting piece 52 is detachably mounted on the third connecting pipe 31, and the other end of the second connecting piece 52 is detachably mounted on the fourth connecting pipe 41, so that the third connecting pipe 31 and the fourth connecting pipe 41 can be movably connected.

Specifically, in order to movably connect the third connecting pipe 31 and the fourth connecting pipe 41, a detachable second connecting piece 52 may be disposed at the connection position of the third connecting pipe 31, and by detachably mounting one end of the second connecting piece 52 on the third connecting pipe 31 and detachably mounting the other end of the second connecting piece 52 on the fourth connecting pipe 41, the third connecting pipe 31 and the fourth connecting pipe 41 are connected and fixed, so that when the third connecting pipe 31 and the fourth connecting pipe 41 need to be detached, the operation can be completed only by detaching the second connecting piece 52, thereby enabling the third connecting pipe 31 and the fourth connecting pipe 41 to be detached or connected at any time.

More specifically, when the distance between the backrest frame assemblies needs to be adjusted, only the second connecting piece 52 at the connection position of the third connecting pipe 31 and the fourth connecting pipe 41 needs to be removed, so that the third connecting pipe 31 and the fourth connecting pipe 41 can be moved, the first backrest pipe 30 and the second backrest pipe 40 can be adjusted by being far away from each other or being close to each other, when the distance between the first backrest pipe 30 and the second backrest pipe 40 is adjusted to a proper position, the second connecting piece with a new specification size needs to be replaced, and the whole backrest frame assembly does not need to be replaced, so that the cost is saved.

It should be noted that, the second connecting member 52 in the present embodiment may be a conventional bolt member or a movable bolt member, or the like, which may be used to movably connect the third connecting tube 31 and the fourth connecting tube 41.

Further, the third connecting pipe 31 is provided with a third connecting portion 33, the fourth connecting pipe 41 is further provided with a fourth connecting portion 34, the third connecting portion 33 is arranged opposite to the fourth connecting portion 34, the third connecting portion 33 and the fourth connecting portion 34 are respectively provided with a plurality of clamping blocks 35, the second connecting piece 52 is provided with a plurality of clamping holes 521, the clamping holes 521 are arranged in one-to-one correspondence with the clamping blocks 35, and the second connecting piece 52 is clamped on the third connecting portion 33 and the fourth connecting portion 34, and the first backrest pipe 30 and the second backrest pipe 40 can be movably connected.

Specifically, when the third connecting pipe 31 and the fourth connecting pipe 41 need to be connected, one end of the second connecting piece 52 is clamped to the clamping block 35 at the third connecting position through the clamping hole 521, and then the other end of the second connecting piece 52 is clamped to the clamping block 35 at the fourth connecting position through the clamping hole 521, so that the third connecting pipe 31 and the fourth connecting pipe 41 are connected, and when the third connecting pipe 31 and the fourth connecting pipe 41 need to be separated from each other, the second connecting piece 52 can be removed from the clamping hole 521 only by clamping the second connecting piece 52 at the third connecting position and the fourth connecting position.

The second connector 52 may be fixed to the third connector 33 and the fourth connector 34 by using a detachable fixing jig or a bolt. Further, the second connecting member 52 is provided with a plurality of first threaded holes 522, and the first threaded holes 522 are used for penetrating bolts; the third connecting portion 33 and the fourth connecting portion 34 are provided with a plurality of second threaded holes 32, and the plurality of second threaded holes 32 are arranged in one-to-one correspondence with the plurality of first threaded holes 522, so that bolts can be connected to the second threaded holes 32 through the first threaded holes 522.

Specifically, in order to make the second connection member 52 connect the third connection pipe 31 and the fourth connection pipe 41 more firmly, a plurality of first threaded holes 522 may be formed in the first connection member 51, and then a plurality of second threaded holes 32 may be formed in the third connection portion 33 and the fourth connection portion 34, and the first threaded holes 522 may be connected to the second threaded holes 32 through bolts so that the second connection member 52 connects the third connection pipe 31 and the fourth connection pipe 41 more firmly.

Further, the bottom end of the first support tube 10 of the seat frame assembly is further connected with a first pedal tube 71 in a penetrating manner, the bottom end of the second support tube 20 is connected with a second pedal tube 72 in a penetrating manner, the connection part of the first pedal tube 71 and the second pedal tube 72 is sleeved with a pedal assembly 70, and the pedal assembly 70 is used for fixing the first pedal tube 71 and the second pedal tube 72.

Specifically, in order to allow the user's foot to be relaxed, the bottom end of the first support tube 10 of the seat frame assembly is further connected with a first foot pedal 71 in a penetrating manner, the bottom end of the second support tube 20 is further connected with a second foot pedal 72 in a penetrating manner, and then the foot pedal assembly 70 is sleeved at the connection position of the first foot pedal 71 and the second foot pedal 72, so that the user can relax the foot through the foot pedal assembly 70 when sitting on the wheelchair.

It should be noted that, since the pedal assembly 70 is sleeved at the connection position between the first pedal tube 71 and the second pedal tube 72, the first pedal tube 71 and the second pedal tube 72 may be movably connected, if the distance between the seat frame assemblies of the user needs to be adjusted, the pedal assembly 70 may be removed, the first pedal tube 71 and the second pedal tube 72 may be synchronously adjusted to a suitable position, and then the pedal tube assemblies may be sleeved at the connection position.

Further, a first rotating connecting shaft 61 is disposed at the bottom end of the first backrest pipe 30, the first rotating connecting shaft 61 is sleeved on the first support pipe 10, so that the first backrest pipe 30 is rotatably connected with the first support pipe 10, a second rotating connecting shaft 62 is disposed at the bottom end of the second backrest pipe 40, and the second rotating connecting shaft 62 is sleeved on the second support pipe 20, so that the second backrest pipe 40 is rotatably connected with the second support pipe 20.

Specifically, since the first rotating connecting shaft 61 is disposed at the bottom end of the first backrest pipe 30, the first rotating connecting shaft 61 is sleeved on the first supporting pipe 10, and then the second rotating connecting shaft 62 is disposed at the bottom end of the second backrest pipe 40, and the second rotating connecting shaft 62 is sleeved on the second supporting pipe 20, so that the whole backrest frame assembly is rotatably connected to the seat frame assembly, a user can rotate the backrest frame assembly on the seat frame assembly to a comfortable position through sitting posture when using the seat frame assembly, and the comfort of the seat is improved.

In the present embodiment, the rotating connection shaft may be a connection fitting such as a conventional rotating joint or a universal connection shaft.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. The wheelchair seat frame with the adjustable width is characterized by comprising a seat frame assembly and a backrest frame assembly, wherein the backrest frame assembly is connected to the seat frame assembly; the seat frame assembly comprises a first supporting tube and a second supporting tube; the first support tube and the second support tube are arranged at intervals, a first connecting tube is arranged on the first support tube, and a second connecting tube is arranged on the second support tube; the first connecting pipe and the second connecting pipe can be movably connected, so that the interval between the first supporting pipe and the second supporting pipe can be adjusted.

2. The adjustable width wheelchair seat frame of claim 1 wherein the back frame assembly comprises a first back tube and a second back tube, the first back tube being spaced apart from the second back tube; the first backrest tube is provided with a third connecting tube, the second backrest tube is provided with a fourth connecting tube, and the third connecting tube is movably connected with the fourth connecting tube, so that the interval between the first backrest tube and the second backrest tube is adjustable.

3. The adjustable width wheelchair seat frame of claim 1 wherein a first connector is provided at a junction of the first connector and the second connector, one end of the first connector is detachably mounted on the first connector, and the other end of the first connector is detachably mounted on the second connector, so that the first connector and the second connector are movably connected.

4. A width adjustable wheelchair seat frame as claimed in claim 3 wherein the first connection tube end is provided with a first connection portion and the second connection tube end is provided with a second connection portion; the first connecting part is arranged opposite to the second connecting part; the first connecting part and the second connecting part are respectively provided with a plurality of clamping parts; the first connecting piece is provided with a plurality of clamping holes, and the clamping holes are arranged in one-to-one correspondence with the clamping parts, so that the first connecting piece is clamped on the first connecting part and the second connecting part, and the first connecting pipe and the second connecting pipe can be movably connected.

5. The adjustable width wheelchair seat frame of claim 4 wherein the first connector has a recess formed therein, the recess being located between two adjacent ones of the snap-in holes, the recess further having a through-hole therein for the through-connection of the connector; the first connecting part and the second connecting part are also provided with mounting holes, and the mounting holes are arranged between two adjacent clamping parts and correspond to the through holes, so that the connecting piece is connected to the mounting holes through the through holes in a penetrating way.

6. The adjustable width wheelchair seat frame of claim 2 wherein a second connector is provided at the connection between the third connector and the fourth connector, one end of the second connector is detachably mounted on the third connector, and the other end of the second connector is detachably mounted on the fourth connector, so that the third connector and the fourth connector can be movably connected.

7. The adjustable width wheelchair seat frame of claim 6 wherein a third connection is provided on the third connection tube and a fourth connection is provided on the fourth connection tube, the third connection being opposite the fourth connection; the third connecting part and the fourth connecting part are respectively provided with a plurality of clamping blocks, the second connecting part is provided with a plurality of clamping holes, and the clamping holes are arranged in one-to-one correspondence with the clamping blocks, so that the second connecting part is clamped on the third connecting part and the fourth connecting part, and the first backrest tube is movably connected with the second backrest tube.

8. The adjustable width wheelchair seat of claim 7 wherein the second connector has a plurality of first threaded holes for receiving bolts; the third connecting part and the fourth connecting part are provided with a plurality of second threaded holes; the plurality of second threaded holes are arranged in one-to-one correspondence with the plurality of first threaded holes, and are used for enabling bolts to pass through the first threaded holes to be connected to the second threaded holes in a penetrating mode.

9. The adjustable width wheelchair seat frame of claim 1 wherein a first foot tube is connected to the bottom end of the first support tube and a second foot tube is connected to the bottom end of the second support tube; the pedal assembly is sleeved at the joint of the first pedal tube and the second pedal tube and used for fixing the first pedal tube and the second pedal tube.

10. The adjustable width wheelchair seat frame of claim 2, wherein a first rotational connection shaft is provided at the bottom end of the first back support tube, and the first rotational connection shaft is sleeved on the first support tube, so that the first back support tube is rotatably connected with the first support tube; the bottom end of the second backrest tube is provided with a second rotating connecting shaft which is sleeved on the second supporting tube, so that the second backrest tube is rotatably connected with the second supporting tube.