CN220558198U - Front support frame and folding wheelchair - Google Patents

Abstract

The application provides a front support frame and a folding wheelchair, relates to the technical field of medical equipment, and is used for solving the technical problem that the current folding wheelchair cannot be suitable for mounting front wheels and/or rear wheels with different sizes and has poor adaptability; the first support arms extend along a first direction, two second support arms are oppositely arranged on two sides of the first support arms, one ends of the second support arms are connected with the first support arms, and the other ends extend along a second direction; the second support arm comprises a first connecting part, an adjusting part and a second connecting part which are sequentially arranged along a second direction, wherein the first connecting part is connected with the first support arm; the adjusting part is configured to adjust an overall length of the second support arm in the second direction to fold the folding wheelchair. The folding wheelchair provided by the application can be suitable for the installation of front wheels and/or rear wheels with different sizes, and can avoid the interference phenomenon of the front wheels and the rear wheels when being folded.

Description

Front support frame and folding wheelchair

Technical Field

The application relates to the technical field of medical equipment, in particular to a front support frame and a folding wheelchair.

Background

The folding wheelchair is a riding-instead tool for special people such as disabled people, elderly people, medical clinical rehabilitation patients and the like, and is widely applied because of being foldable, portable and small in occupied space.

The existing folding wheelchair comprises a front supporting frame and a rear supporting frame, wherein the rear supporting frame is usually used for installing a rear wheel, the front supporting frame is used for installing a front wheel, the front wheel and the rear wheel are arranged at intervals and keep a certain distance, so that when the folding wheelchair is folded, the front wheel and the rear wheel do not interfere with each other, and the folding wheelchair is guaranteed to be completely folded so as to be convenient to store and store.

However, according to different demands of customers, the folding wheelchair needs to be replaced with front wheels and/or rear wheels of larger sizes, and interference conditions exist between the front wheels and the rear wheels when the folding wheelchair is folded, so that the folding wheelchair cannot be completely folded, and therefore, the current folding wheelchair cannot be suitable for mounting the front wheels and/or the rear wheels of different sizes and has poor adaptability.

Disclosure of Invention

The utility model provides an aim at provides a preceding support frame and folding wheelchair, can be applicable to the installation of not unidimensional front wheel and/or rear wheel to can avoid folding time, the interference phenomenon appears in front wheel and rear wheel, in order to guarantee that folding wheelchair is folding completely, promote its adaptability.

In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions:

a first aspect of the embodiments of the present application provides a front support for mounting a front wheel of a folding wheelchair; the front support frame comprises a first support arm and two second support arms; the first support arms are used for mounting the front wheels, the first support arms extend along a first direction, the two second support arms are oppositely arranged on two sides of the first support arms along the first direction, one ends of the second support arms are connected with the first support arms, and the other ends of the second support arms extend along a second direction; the second support arm comprises a first connecting part, an adjusting part and a second connecting part which are sequentially arranged along a second direction, wherein the first connecting part is connected with the first support arm; the adjusting part is detachably arranged between the first connecting part and the second connecting part, and the adjusting part is configured to adjust the whole length of the second supporting arm along the second direction so as to enable the folding wheelchair to fold.

In an alternative embodiment, the adjustment portion is configured as a support having different lengths.

In an alternative embodiment, the adjustment portion is configured as a telescoping member; the telescopic piece at least comprises one telescopic joint, and two adjacent telescopic joints are sleeved together and connected in a sliding manner.

In an alternative embodiment, a first connector is provided at an end of the first connecting portion facing the adjusting portion; the first connecting part is connected with the adjusting part through the first connecting head.

In an alternative embodiment, a second connector is arranged on one side of the second connecting part facing the adjusting part; the second connecting part is connected with the adjusting part through the second connector.

In an alternative embodiment, the first connection head and/or the second connection head are configured as telescopic connection heads.

In an alternative embodiment, the front support further comprises at least one connecting rod; the connecting rod extends along a first direction, and two ends of the connecting rod are respectively connected with the adjusting part.

In an alternative embodiment, the connecting rod is integrally formed with both of the adjustment portions; the first supporting arm and the first connecting parts positioned on two sides of the first supporting arm are of an integrated structure.

In an alternative embodiment, the front support frame is further provided with a cover; the covering piece is arranged on the second supporting arm, and at least covers the connection part of the adjusting part and the first connecting part and the connection part of the adjusting part and the second connecting part.

A second aspect of the embodiments of the present application provides a folding wheelchair, which includes a front wheel, a rear support frame, a pedal, a backrest support and the front support frame of the first aspect; the front support frame comprises a first support arm and a second support arm, and the front wheel and the pedals are respectively arranged on the first support arm; the front support frame is connected with the backrest bracket through the second support arm and rotates relative to the backrest bracket; the rear support frame is connected with the backrest bracket and rotates relative to the backrest bracket; the rear wheel is mounted on the rear support frame.

Compared with the related art, the front support frame and the folding wheelchair provided by the embodiment of the application have the following advantages:

the embodiment of the application provides a folding wheelchair, which is characterized in that an adjusting part is arranged on a second supporting arm of a front supporting frame so as to adjust the length of the second supporting arm along a second direction; one end of the second supporting arm is connected with the first supporting arm, and the other end of the second supporting arm is connected with the rear supporting frame so as to distance between the first supporting arm and the rear supporting frame. Further, the front wheel is arranged on the first supporting arm, and the rear wheel is arranged on the rear supporting frame, so that the distance between the front wheel and the rear wheel in the second direction is adjusted.

In the related art, the whole length of the front support frame in the second direction is not adjustable, and when the folding wheelchair is folded, the front wheels and the rear wheels with larger sizes are replaced, so that the folding wheelchair cannot be folded completely due to interference between the front wheels and the rear wheels.

However, in the embodiment of the application, the adjusting part is arranged on the second supporting arm so as to adjust the length of the front supporting frame along the second direction, so that the front wheel and the rear wheel have a larger distance in the second direction when a customer changes the front wheel and/or the rear wheel with larger size, and the front wheel and the rear wheel are not interfered when the folding wheelchair is folded, so that the folding wheelchair is completely folded; the distance between the front wheel and the rear wheel in the second direction can be adjusted according to the mounted front wheel and rear wheel, namely the folding wheelchair is applicable to the mounting of front wheels and/or rear wheels with different sizes, and has good adaptability.

In addition to the technical problems, technical features constituting the technical solutions, and beneficial effects brought by the technical features of the technical solutions described above in the embodiments of the present disclosure, other technical problems that can be solved by the front support frame and the folding wheelchair provided in the embodiments of the present disclosure, other technical features included in the technical solutions, and beneficial effects brought by the technical features will be described in further detail in the detailed description of the present disclosure.

Drawings

Fig. 1 is a schematic structural view of a folding wheelchair provided in an embodiment of the present application in an unfolded state;

FIG. 2 is a schematic view of the mechanism of the folding wheelchair of the present embodiment in the unfolded state;

FIG. 3 is a schematic view of a folding wheelchair according to an embodiment of the present application in a folded state;

FIG. 4 is a schematic view of a mechanism of a folding wheelchair according to an embodiment of the present application in a folded state;

fig. 5 is a schematic structural view of a front support frame according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram illustrating the detachment of the front support according to the embodiment of the present application.

Reference numerals:

10-a front support frame;

11-front wheels; 12-a first support arm; 13-a second support arm; 131-a first connection; 132-an adjustment part; 133-a second connection; 14-connecting rods;

20-a backrest support;

30-a rear supporting frame;

31-rear wheels;

40-bracket connecting rod;

50-seat links;

60-a seat support;

70-armrests;

80-pedaling;

100-folding wheelchair.

Detailed Description

As described in the background art, the folding wheelchair of the related art cannot be adapted to the installation of front wheels and/or rear wheels of different sizes, and has poor adaptability. The inventors have found that the cause of this problem is: the distance between the front support frame and the rear support frame of the existing folding wheelchair along the front-rear direction can not be adjusted, after the front wheel or the rear wheel with larger size is replaced, the distance between the front wheel and the rear wheel is reduced, and when the folding wheelchair is folded, the front wheel and the rear wheel interfere, so that the folding wheelchair can not be completely folded.

In view of the above technical problems, an embodiment of the present application provides a folding wheelchair, in which an adjusting portion is provided on a second support arm of a front support frame to adjust a length of the second support arm along a second direction; one end of the second supporting arm is connected with the first supporting arm, and the other end of the second supporting arm is connected with the rear supporting frame so as to distance between the first supporting arm and the rear supporting frame. Further, the front wheel is arranged on the first supporting arm, and the rear wheel is arranged on the rear supporting frame, so that the distance between the front wheel and the rear wheel in the second direction is adjusted.

By arranging the adjusting part on the second supporting arm, the length of the front supporting frame along the second direction is adjusted, so that the situation that a customer has a larger distance between the front wheel and the rear wheel in the second direction when the customer replaces the front wheel and/or the rear wheel with larger size is met, and the front wheel and the rear wheel are not interfered when the folding wheelchair is folded, so that the folding wheelchair is completely folded; the distance between the front wheel and the rear wheel in the second direction can be adjusted according to the mounted front wheel and rear wheel, namely the folding wheelchair is applicable to the mounting of front wheels and/or rear wheels with different sizes, and has good adaptability.

In order to make the above objects, features and advantages of the embodiments of the present application more comprehensible, the following description will make the technical solutions of the embodiments of the present application clear and complete with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which are within the scope of the protection of the present application, will be within the purview of one of ordinary skill in the art without the exercise of inventive faculty.

For the convenience of describing the embodiments of the present application, a coordinate system in the drawings will be described first, wherein the X axis is a first direction, and the first direction may be a left direction and a right direction of the folding wheelchair; the Y axis is in a second direction, and the second direction can be the front direction and the rear direction of the folding wheelchair; the Z-axis direction is a third direction, which may be the height direction of the folding wheelchair.

As shown in fig. 1 to 4, the folding wheelchair 100 provided in the embodiment of the present application includes a front support frame 10, a backrest support frame 20, armrests 70, front wheels 11, rear wheels 31, a rear support frame 30, a support link 40, a seat support 60, a seat link 50, pedals 80, and the like; wherein the front support frame 10, the backrest support frame 20, the rear support frame 30 and the support links 40 are hinged together and form a foldable and deformable first link mechanism.

The front support frame 10, the backrest support 20, the seat support 60 and the seat connecting rod 50 are hinged together to form a second connecting rod mechanism which can be folded and deformed, and the second connecting rod mechanism is linked with the first connecting rod mechanism so as to realize the follow-up folding or unfolding of the seat support 60 in the whole unfolding or folding process of the folding wheelchair 100.

Specifically, the front support frame 10 is used for mounting a front wheel 11, also referred to as a front wheel bracket, and a pedal 80 is also mounted at the front end of the front support frame 10 to provide foot support for a user. The rear support bracket 30 is used for mounting a rear wheel 31, also referred to as a rear wheel bracket.

The backrest bracket 20 comprises a first mounting part and a second mounting part, the first mounting part is used for mounting a backrest cushion of the folding wheelchair 100, the second mounting part is used for being connected with the front support frame 10, the seat bracket 60 and the rear support frame 30, one end of the front support frame 10 far away from the front wheel 11 and one end of the rear support frame 30 far away from the rear wheel 31 can be respectively and rotatably connected to the second mounting part of the backrest bracket 20 and can rotate relative to the backrest bracket 20, namely, the front support frame 10 and the rear support frame 30 are both hinged to the backrest bracket 20 and can respectively rotate relative to the backrest bracket 20.

A support connecting rod 40 is arranged between the rear support frame 30 and the front support frame 10, and two ends of the support connecting rod 40 are respectively hinged with the rear support frame 30 and the front support frame 10, namely, the front support frame 10, the backrest support 20, the rear support frame 30 and the support connecting rod 40 are mutually connected in a rotating way to form a rotating shaft point a, b, c, d so as to form a first connecting rod mechanism capable of being folded and deformed to realize folding of the front support frame 10, the rear support frame 30 and the backrest support 20 of the folding wheelchair 100. When the folding wheelchair 100 is in the unfolded state, the backrest bracket 20 and the rear support bracket 30 are in limit support with each other, so that a stable triangle structure with the rotation axis points a, c and d is formed.

The seat connecting rod 50 is used for connecting the seat support 60 and the front support frame 10, wherein one end of the seat connecting rod 50 is hinged with the seat support 60, and the other end of the seat connecting rod 50 is hinged with the front support frame 10, namely, the front support frame 10, the seat connecting rod 50, the seat support 60 and the backrest support 20 are mutually hinged and form a rotating shaft point e, f, g, a, so as to form a foldable and deformable second connecting rod mechanism, and realize follow-up folding of the seat support 60 in the whole folding and unfolding processes of the folding wheelchair 100.

As shown in fig. 5 and 6, the front support frame 10 provided in the embodiment of the present application includes a first support arm 12 and two second support arms 13, wherein the first support arm 12 extends along a first direction, and the first support arm 12 is used for mounting the front wheel 11 and the pedals 80.

The two second supporting arms 13 are oppositely arranged at two sides of the first supporting arm 12 along the first direction, the second supporting arms 13 extend along the second direction, one end of each second supporting arm 13 is connected with the first supporting arm 12, and the other end of each second supporting arm can be connected with the backrest bracket 20 and rotate relative to the backrest bracket 20; illustratively, two sides of the first supporting arm 12 are respectively connected with two second supporting arms 13, and the three form a U-shaped structure.

Further, the second support arm 13 includes a first connection portion 131, an adjusting portion 132, and a second connection portion 133 sequentially disposed along the second direction, wherein the first connection portion 131 is connected with the first support arm 12. For example, the first connecting portion 131 and the first support arm 12 may be a unitary structure.

The second connection portion 133 is connected to the backrest bracket 20, the adjustment portion 132 is detachably mounted between the first connection portion 131 and the second connection portion 133, and the adjustment portion 132 is configured to adjust the overall length of the second support arm 13 along the second direction, so that the folding wheelchair 100 is folded.

Illustratively, the adjusting part 132 may be configured to have different length of supporting members, so that when a user replaces the front wheel 11 or the rear wheel 31 with a larger size, a supporting member with a proper length is selected to be mounted on the first connecting part 131 and the second connecting part 133, so as to adjust the overall length of the second supporting arm 13 along the second direction, thereby adjusting the distance between the front wheel 11 and the rear wheel 31 along the second direction.

In the related art, the overall length of the front support frame 10 in the second direction is not adjustable, and when the folding wheelchair 100 is replaced with a front wheel 11 and/or a rear wheel 31 with a larger size, there is an interference between the front wheel 11 and the rear wheel 31 when the folding wheelchair 100 is folded, so that the folding wheelchair 100 cannot be folded completely.

However, in the embodiment of the present application, the adjusting portion 132 is provided on the second supporting arm 13 to adjust the length of the front supporting frame 10 along the second direction, so as to satisfy that when the customer changes the front wheel 11 and/or the rear wheel 31 with a larger size, the front wheel 11 and the rear wheel 31 have a larger distance along the second direction, so as to ensure that the front wheel 11 and the rear wheel 31 do not interfere when the folding wheelchair 100 is folded, so that the folding wheelchair 100 is completely folded; the distance between the front wheel 11 and the rear wheel 31 in the second direction can be adjusted according to the installed front wheel 11 and rear wheel 31, namely, the folding wheelchair 100 can be suitable for installing the front wheel 11 and/or the rear wheel 31 with different sizes, and has good adaptability.

On the basis of the above embodiments, in the front support frame 10 provided in the embodiments of the present application, the adjusting portion 132 is configured as a telescopic member, the telescopic member includes at least one telescopic joint, and two adjacent telescopic joints are sleeved together and slidingly connected.

Specifically, the telescopic member is configured to include one sleeve or a plurality of sleeves, each sleeve serving as one telescopic joint, the sleeve may be a square tube, and the sleeve is provided with a plurality of adjustment holes at equal intervals along the length direction thereof, and is connected with the first connection portion 131 or the second connection portion 133 by selecting the adjustment holes, so as to achieve adjustment of the length of the entire second support arm 13.

Or, the telescopic piece comprises a plurality of sleeves sleeved in sequence, and two adjacent sleeves slide relatively. In order to adjust the length of the telescopic piece, the adjusting holes of the two adjacent sleeves connected by the fastener are selected to adjust the overall length of the two sleeves.

For example, the telescopic member includes a first sleeve having a plurality of first adjustment holes arranged at intervals and a second sleeve having a plurality of second adjustment holes arranged at intervals, which are sleeved together, and the first sleeve is connectable with the first connection portion 131 and the second sleeve is connectable with the second connection portion 133.

When the user changes the front wheel 11 or the rear wheel 31 with a larger size, the length of the second supporting arm 13 needs to be adjusted, and a suitable first adjusting hole is selected to be connected with the second adjusting hole, so that the telescopic member does not need to be detached from the first connecting portion 131 and the second connecting portion 133, and only the relative positions of the first sleeve and the second sleeve in the second direction need to be adjusted, so as to adjust the length of the whole second supporting arm 13.

The first connecting portion 131 is provided with a first connector, the first connector is disposed at an end of the first connecting portion 131 facing the adjusting portion 132, and the first connecting portion 131 is connected to the adjusting portion 132 through the first connector. For example, the first connector is connected with the telescopic piece, and the first connector can be inserted into the first sleeve of the telescopic piece and is installed with the first adjusting hole.

Correspondingly, the second connecting portion 133 is provided with a second connector, the second connector is disposed at an end of the second connecting portion 133 facing the adjusting portion 132, and the second connecting portion 133 is connected to the adjusting portion 132 through the second connector. For example, the second connector is connected with the telescopic piece, and the second connector can be inserted into the second sleeve of the telescopic piece and is installed with the second adjusting hole.

On the basis of the above embodiment, in order to meet the needs of different users for adjusting the second support arm 13, in this embodiment, the first connector and/or the second connector are configured as telescopic connectors, that is, the first connector and the second connector can be adjusted along the second direction, and the adjusting holes adapted to the first connector and the second connector can be selected for installation, so as to adjust the overall length of the second support arm 13.

For example, the length of the first connector in the second direction is adjustable, and when the user changes the front wheel 11 or the rear wheel 31 with a larger size, the user needs to adjust the length of the first connector and select a suitable first adjusting hole, so that the overall length of the first connector and the telescopic member can be adjusted, so as to adjust the distance between the front wheel 11 and the rear wheel 31 in the second direction.

Further, for improving the structural strength of the front support frame 10 and facilitating installation of the seat cushion, the front support frame 10 provided in the embodiment of the present application further includes at least one connecting rod 14, the connecting rod 14 extends along the first direction, and two ends of the connecting rod 14 are respectively connected with the adjusting portion 132. For example, the front support frame 10 includes a connecting rod 14, two ends of the connecting rod 14 are respectively connected to the adjusting portions 132, and the connecting rod 14 and the two adjusting portions 132 may be an integral structure.

On the basis of the above embodiments, the front support frame 10 provided in the embodiments of the present application is further provided with a cover; the covering member is disposed on the second support arm 13, and covers at least a junction of the adjusting portion 132 and the first connecting portion 131 and a junction of the adjusting portion 132 and the second connecting portion 133.

For example, a cover is provided on each of the second support arms 13, and the cover may wrap the second support arms 13. The covering piece covers the connection part of the first connection part 131 and the first connection head and the connection part of the second connection head and the second connection part 133, so that the arrangement can prevent external water vapor and the like from entering into each connection part to corrode the front support frame 10, and the service life of the folding wheelchair 100 is prolonged.

In this specification, each embodiment or implementation is described in a progressive manner, and each embodiment focuses on a difference from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Generally, terms should be understood at least in part by use in the context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, at least in part depending on the context. Similarly, terms such as "a" or "an" may also be understood to convey a singular usage or a plural usage, depending at least in part on the context.

It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A front support frame for mounting front wheels of a folding wheelchair; the front support frame is characterized by comprising a first support arm and two second support arms;

the first support arms are used for mounting the front wheels, the first support arms extend along a first direction, the two second support arms are oppositely arranged on two sides of the first support arms along the first direction, one ends of the second support arms are connected with the first support arms, and the other ends of the second support arms extend along a second direction;

the second support arm comprises a first connecting part, an adjusting part and a second connecting part which are sequentially arranged along a second direction, wherein the first connecting part is connected with the first support arm;

the adjusting part is detachably arranged between the first connecting part and the second connecting part, and the adjusting part is configured to adjust the whole length of the second supporting arm along the second direction so as to enable the folding wheelchair to fold.

2. The front support of claim 1, wherein the adjustment portions are configured as supports having different lengths.

3. The front support of claim 1, wherein the adjustment portion is configured as a telescoping member;

the telescopic piece at least comprises one telescopic joint, and two adjacent telescopic joints are sleeved together and connected in a sliding manner.

4. A front support according to any one of claims 1 to 3, wherein the first connection portion is provided with a first connection head towards one end of the adjustment portion;

the first connecting part is connected with the adjusting part through the first connecting head.

5. The front support of claim 4, wherein a second connector is provided at a side of the second connection portion facing the adjustment portion;

the second connecting part is connected with the adjusting part through the second connector.

6. The front support of claim 5, wherein the first connector and/or the second connector are configured as telescoping connectors.

7. The front support of claim 1, further comprising at least one connecting rod;

the connecting rod extends along a first direction, and two ends of the connecting rod are respectively connected with the adjusting part.

8. The front support of claim 7, wherein the connecting rod is integrally formed with both of the adjustment portions;

the first supporting arm and the first connecting parts positioned on two sides of the first supporting arm are of an integrated structure.

9. The front support of claim 1, further provided with a cover;

the covering piece is arranged on the second supporting arm, and at least covers the connection part of the adjusting part and the first connecting part and the connection part of the adjusting part and the second connecting part.

10. A folding wheelchair comprising a front wheel, a rear support frame, a pedal, a back support frame and a front support frame according to any one of claims 1 to 9;

the front support frame comprises a first support arm and a second support arm, and the front wheel and the pedals are respectively arranged on the first support arm;

the front support frame is connected with the backrest bracket through the second support arm and rotates relative to the backrest bracket;

the rear support frame is connected with the backrest bracket and rotates relative to the backrest bracket; the rear wheel is mounted on the rear support frame.