CN216535832U

CN216535832U - Folding support and folding electric wheelchair

Info

Publication number: CN216535832U
Application number: CN202122748551.4U
Authority: CN
Inventors: 郑子衡
Original assignee: Universal Robotics Ltd
Current assignee: Universal Robotics Ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-05-17
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses a folding bracket and a folding electric wheelchair, which comprise a support frame, an underframe and a folding assembly, wherein the folding assembly comprises a first connecting arm, a second connecting arm, a third connecting arm and a hinged frame; the two sides of the front end of the underframe are respectively hinged with a first connecting arm, the top ends of the two first connecting arms are respectively hinged with a second connecting arm, and the rear ends of the two second connecting arms are respectively hinged with the two sides of the rear end of the underframe; third connecting arms are arranged on two sides of the front end of the supporting frame, and the bottom ends of the two third connecting arms are hinged to the front ends of the two second connecting arms respectively; two sides of the top end of the hinged frame are respectively hinged to two sides of the rear end of the support frame; two sides of the bottom end of the hinged frame are respectively hinged to two sides of the rear end of the bottom frame. The utility model also discloses a folding electric wheelchair, wherein front wheels are pivoted on two sides of the front end of the underframe; the rear end both sides of butt all the pin joint has the rear wheel. The utility model can be folded quickly, and the formed supporting structure is stable.

Description

Folding support and folding electric wheelchair

Technical Field

The utility model relates to the technical field of folding equipment, in particular to a folding bracket and a folding electric wheelchair.

Background

At present, a lot of equipment on the market generally can set up foldable structure in order to practice thrift storage space, be convenient for transport etc. like folding table, folding chair etc. expand when using, fold up when not using, be convenient for deposit and transport.

When the wheelchair is used normally, a person sits on the wheelchair to operate the wheelchair or is pushed to walk, when the wheelchair is not used, the wheelchair needs to be placed, and if the wheelchair is placed in a general unfolding mode, the wheelchair occupies a large floor area and is inconvenient to carry outside. For this reason, foldable wheelchairs have been invented, in which the frame of the wheelchair is the supporting structure in the wheelchair, which is one of the most important components of the wheelchair. In order to meet the use functions of different wheelchairs, the wheelchairs are made into various appearance shapes, wherein the frame of the wheelchairs is generally made into a foldable frame structure for the convenience of use in daily life, and the frame of the wheelchairs in different forms can be folded, stretched, folded, disassembled and the like.

However, the existing folding structure is not flexible enough when being folded, and the folding process is complex and laborious to operate, and difficult to fold and unfold.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a folding bracket which can be folded quickly and has a stable formed supporting structure.

The second objective of the present invention is to provide a foldable electric wheelchair, which can be quickly folded and has a stable load-bearing structure.

One of the purposes of the utility model is realized by adopting the following technical scheme:

a folding bracket comprises a supporting frame, a bottom frame and a folding assembly, wherein the folding assembly comprises a first connecting arm, a second connecting arm, a third connecting arm and a hinged frame; the two sides of the front end of the underframe are both hinged with the first connecting arms, the top ends of the two first connecting arms are both hinged with the second connecting arms, and the rear ends of the two second connecting arms are respectively hinged with the two sides of the rear end of the underframe; third connecting arms are arranged on two sides of the front end of the supporting frame, and the bottom ends of the two third connecting arms are hinged to the front ends of the two second connecting arms respectively; two sides of the top end of the hinged frame are hinged to two sides of the rear end of the supporting frame respectively; two sides of the bottom end of the hinged frame are hinged to two sides of the rear end of the bottom frame respectively; the hinged frame is provided with an avoidance position for avoiding the underframe; the two second connecting arms are positioned outside two sides of the hinged frame.

As a preferred embodiment, the foldable support further comprises a backrest frame, and two sides of the bottom end of the backrest frame are respectively hinged to two sides of the rear end of the support frame; the bottom end of the backrest frame is hinged with the top end of the hinged frame.

As a preferred embodiment, the two sides of the backrest frame are respectively provided with an armrest assembly, each armrest assembly comprises an armrest rod and a hinge rod, one end of each armrest rod is hinged to the backrest frame, the other end of each armrest rod is hinged to one end of the corresponding hinge rod, and the other end of each hinge rod is hinged to the corresponding support frame.

In a preferred embodiment, the front end of the chassis is hinged with a pedal.

As a preferred embodiment, the bottom end of the bottom frame is provided with a storage box.

As a preferred embodiment, a plurality of partition plates are arranged in the storage box.

In a preferred embodiment, the supporting frame, the bottom frame and the folding assembly are made of carbon fiber.

The second purpose of the utility model is realized by adopting the following technical scheme:

a folding electric wheelchair comprises a folding bracket, wherein front wheels are pivoted on two sides of the front end of an underframe; the rear wheels are pivoted on two sides of the rear end of the underframe.

As a preferred embodiment, the rear wheels are electric wheels.

As a preferred embodiment, the supporting frame is provided with a seat board.

Compared with the prior art, the utility model has the beneficial effects that:

the supporting frame and the underframe can be connected through the folding assembly, after the second connecting arm of the folding assembly rotates forwards, the third connecting arms on two sides of the front end of the supporting frame and the first connecting arms on two sides of the front end of the underframe are driven to simultaneously rotate forwards, and then the hinged frame hinged to the underframe and the rear end of the supporting frame is pulled to rotate forwards, so that the whole supporting frame can be folded towards the underframe, namely the folding can be realized through the forward rotation of the second connecting arm, the folding process is quicker, and the operation is simple.

In addition, the second linking arm rotates the back towards the back, drives the third linking arm of support frame front end both sides and the first linking arm of chassis front end both sides and rotates backward simultaneously, and then the pulling articulates the articulated frame that articulates in chassis and support frame rear end and rotates backward, therefore whole support frame alright keep away from the chassis tensile to form the structure of propping up through first linking arm, second linking arm, third linking arm and articulated frame, bearing structure is more stable.

Drawings

FIG. 1 is a schematic view of a folding stand according to the present invention;

fig. 2 is a schematic view of another perspective structure of the foldable stand according to the present invention;

FIG. 3 is a schematic structural view of the hinge bracket of the present invention;

FIG. 4 is a schematic view of the storage case of the present invention;

FIG. 5 is a schematic structural view of the folding electric wheelchair of the present invention;

fig. 6 is a schematic structural view of the folding electric wheelchair of the present invention.

In the figure: 10. a chassis; 20. a support frame; 21. a table plate; 31. a first connecting arm; 32. a second connecting arm; 33. a third connecting arm; 34. a hinged frame; 341. avoidance positions; 40. a backrest frame; 51. a grab rail; 52. a hinged lever; 60. a foot pedal; 70. a storage box; 71. a partition plate; 80. a front wheel; 90. a rear wheel.

Detailed Description

The following description will be further described with reference to the accompanying drawings and specific embodiments, and it should be noted that any combination of the following described embodiments or technical features can be used to form a new embodiment without conflict. Except as specifically noted, the materials and equipment used in this example are commercially available. Examples of embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "back", "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, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless specifically stated otherwise.

In the description of the present application, it should be noted that unless otherwise specifically stated or limited, the terms "connected," "communicating," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a connection through an intervening medium, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the case of the example 1, the following examples are given,

as shown in fig. 1-4, the foldable support comprises a support frame 20, a bottom frame 10 and a folding assembly, wherein the folding assembly comprises a first connecting arm 31, a second connecting arm 32, a third connecting arm 33 and a hinge frame 34, the first connecting arm 31 is hinged to two sides of the front end of the bottom frame 10, the second connecting arms 32 are hinged to the top ends of the two first connecting arms 31, namely the top ends of the two first connecting arms 31 are hinged to the front ends of the two second connecting arms 32, and the rear ends of the two second connecting arms 32 are hinged to two sides of the rear end of the bottom frame 10.

In addition, third connecting arms 33 are arranged on two sides of the front end of the supporting frame 20, the bottom ends of the two third connecting arms 33 are respectively hinged to the front ends of the two second connecting arms 32, and two sides of the top end of the hinged frame 34 are respectively hinged to two sides of the rear end of the supporting frame 20. Both sides of the bottom end of the hinge frame 34 are respectively hinged to both sides of the rear end of the base frame 10, and in addition, the hinge frame 34 is provided with an avoidance position 341 for avoiding the base frame 10; two second connecting arms 32 are located on the outside of both sides of the hinge frame 34.

On the basis of the structure, when the foldable support is used, the support frame 20 and the underframe 10 can be connected through the folding assembly, so that after the second connecting arm 32 of the folding assembly rotates forwards, the third connecting arms 33 on the two sides of the front end of the support frame 20 and the first connecting arms 31 on the two sides of the front end of the underframe 10 are driven to simultaneously rotate forwards, and the hinged frames 34 hinged to the rear ends of the underframe 10 and the support frame 20 are further pulled to rotate forwards, so that the whole support frame 20 can be folded towards the underframe 10, namely, the folding can be realized by the forward rotation of the second connecting arm 32, the folding process is quicker, and the operation is simple.

It should be noted that, since the hinge frame 34 is provided with the avoiding position 341, when the supporting frame 20 is folded downward relative to the bottom frame 10, the hinge frame 34 may also be downward, and the avoiding position 341 may avoid the rear end of the bottom frame 10, so as to prevent the hinge frame 34 from being abutted against the rear end of the bottom frame 10 to cause uneven folding. In addition, the two second connecting arms 32 are located outside two sides of the hinge frame 34, so that when the two second connecting arms 32 rotate forward and are folded downward, the two second connecting arms can also get out of the hinge frame 34, and the folded volume is smaller.

In addition, second connecting arm 32 rotates the back towards the back, drives third connecting arm 33 and the first connecting arm 31 of chassis 10 front end both sides of support frame 20 both sides backward simultaneously, and then the pulling articulates the articulated frame 34 that articulates in chassis 10 and support frame 20 rear end and rotates backward, therefore whole support frame 20 alright keep away from chassis 10 tensile, and form the structure of propping up through first connecting arm 31, second connecting arm 32, third connecting arm 33 and articulated frame 34, and bearing structure is more stable.

As a preferred embodiment, the foldable stand of this embodiment further includes a back rest frame 40, both sides of the bottom end of the back rest frame 40 are hinged to both sides of the rear end of the support frame 20, respectively, and the bottom end of the back rest frame 40 is hinged to the top end of the hinge frame 34, so that when unfolded, the back rest frame 40 can be unfolded, and a person can rest on the back rest frame 40, which is more comfortable to use. When the backrest frame 40 is folded, the backrest frame 40 can be rotated forward and folded downward on the support frame 20, so that the backrest frame 40 can be folded, that is, the backrest frame 40 can be completely folded after being arranged, and the function is complete.

Further, the armrest assembly may be disposed on both sides of the backrest frame 40, and the armrest assembly includes an armrest rod 51 and a hinge rod 52, wherein one end of the armrest rod 51 is hinged to the backrest frame 40, the other end of the armrest rod 51 is hinged to one end of the hinge rod 52, and the other end of the hinge rod 52 is hinged to the support frame 20. When the backrest frame 40 is unfolded, the backrest frame 40 can be pulled upwards, the backrest frame 40 rotates backwards, the armrest rod 51 is pulled upwards by the backrest frame 40, and the linkage hinge rod 52 moves upwards, so that the whole backrest frame 40 and the armrest assembly are unfolded, a user can lean on the backrest frame 40 to hold the armrest rod 51, the use is more comfortable, the armrest rod 51, the backrest frame 40 and the hinge rod 52 can form a triangular support structure, and the formed unfolded structure is more stable.

Of course, when folding, the back frame 40 rotates forward to drive the armrest rod 51 downward, and the hinge rod 52 can rotate downward, i.e. the folding of the back frame 40 can be linked with the folding of the armrest assembly, and the folding speed is faster.

Specifically, a foot pedal 60 may be further hinged to the front end of the chassis 10, and when the foldable bicycle is used, a user sits on the support frame 20 and rotates and unfolds the foot pedal 60 forward to place the foot of the user, so that the foldable bicycle is more comfortable to use.

Further, a storage box 70 is disposed at the bottom end of the bottom frame 10, and the storage box 70 is disposed at the bottom end of the bottom frame 10, so that the folding process is not interfered, and the storage box 70 may be used for storing other objects and other structures (such as a motor) for installing the folding bracket.

As a preferable embodiment, a plurality of partition plates 71 are provided in the storage case 70, the plurality of partition plates 71 can divide the interior of the storage case 70 into a plurality of storage spaces, and different articles can be placed in the plurality of storage spaces for separate storage.

As a preferred embodiment, the supporting frame 20, the bottom frame 10 and the folding components are made of carbon fiber, so that the supporting frame is light in weight, high in strength and more convenient to carry after being folded. When the cable is unfolded for use, the strength is better, and the service life is longer.

In the case of the example 2, the following examples are given,

as shown in fig. 1-6, a foldable electric wheelchair comprises a foldable support, which includes a support frame 20, a bottom frame 10 and a folding assembly, wherein the folding assembly includes a first connecting arm 31, a second connecting arm 32, a third connecting arm 33 and a hinge frame 34, the first connecting arms 31 are hinged to both sides of the front end of the bottom frame 10, and the top ends of the two first connecting arms 31 are hinged to the second connecting arms 32, i.e. the top ends of the two first connecting arms 31 are hinged to the front ends of the two second connecting arms 32, and then the rear ends of the two second connecting arms 32 are hinged to both sides of the rear end of the bottom frame 10.

Front wheels 80 are pivoted at both sides of the front end of the underframe 10; rear wheels 90 are pivoted on both sides of the rear end of the underframe.

It should be noted that, since the hinge frame 34 is provided with the avoiding position 341, when the supporting frame 20 is folded downward relative to the bottom frame 10, the hinge frame 34 may also be downward, and the avoiding position 341 may avoid the rear end of the bottom frame 10, so as to prevent the hinge frame 34 from being abutted against the rear end of the bottom frame 10 to cause uneven folding. In addition, the two second connecting arms 32 are located outside two sides of the hinge frame 34, so that when the two second connecting arms 32 rotate forward and are folded downwards, the two second connecting arms can also avoid the hinge frame 34, and the folded volume is smaller.

Because the front wheels 80 are pivoted at both sides of the front end of the underframe 10; the rear wheels 90 are pivoted to both sides of the rear end of the abutment, so that after the unfolding, a person can sit on the support frame 20, and the front wheels 80 and the rear wheels 90 can roll to use the wheelchair.

Of course, the backrest cushion can be arranged on the backrest frame 40 for people to lean on, and the people can feel more comfortable when leaning on.

As a preferred embodiment, the rear wheel 90 is an electric wheel, and on the basis of the storage box 70 provided at the bottom end of the folding bracket, the motor body of the electric wheel, the power cord, and other structures can be installed in the storage box 70 to prevent damage due to exposure.

As a preferred embodiment, the supporting frame 20 is provided with a seat plate, which can be a soft cushion and is more comfortable in use.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A folding bracket is characterized by comprising a supporting frame, a bottom frame and a folding assembly, wherein the folding assembly comprises a first connecting arm, a second connecting arm, a third connecting arm and a hinged frame; the two sides of the front end of the underframe are both hinged with the first connecting arms, the top ends of the two first connecting arms are both hinged with the second connecting arms, and the rear ends of the two second connecting arms are respectively hinged with the two sides of the rear end of the underframe; third connecting arms are arranged on two sides of the front end of the supporting frame, and the bottom ends of the two third connecting arms are hinged to the front ends of the two second connecting arms respectively; two sides of the top end of the hinged frame are hinged to two sides of the rear end of the supporting frame respectively; two sides of the bottom end of the hinged frame are hinged to two sides of the rear end of the bottom frame respectively; the hinged frame is provided with an avoidance position for avoiding the underframe; the two second connecting arms are positioned outside two sides of the hinged frame.

2. The folding stand of claim 1 further including a back rest, both sides of a bottom end of said back rest being hingedly connected to both sides of a rear end of said support frame, respectively; the bottom end of the backrest frame is hinged with the top end of the hinged frame.

3. The folding bracket of claim 2, wherein the back frame is provided with armrest assemblies on both sides thereof, the armrest assemblies including an armrest rod and a hinge rod, one end of the armrest rod being hinged to the back frame, the other end of the armrest rod being hinged to one end of the hinge rod, and the other end of the hinge rod being hinged to the support frame.

4. The folding stand of claim 1, wherein a foot pedal is further hinged to the front end of the chassis.

5. The folding rack of any one of claims 1-4 in which a storage compartment is provided at the bottom end of the chassis.

6. The folding stand of claim 5, wherein a plurality of baffles are provided within said receptacle.

7. The folding bracket of any one of claims 1-4 wherein the support frame, the base frame, and the folding assembly are made of carbon fiber.

8. A folding electric wheelchair, which is characterized by comprising a folding bracket according to any one of claims 1 to 7, wherein front wheels are pivoted on both sides of the front end of the underframe; the rear wheels are pivoted on two sides of the rear end of the underframe.

9. The foldable, electrically powered wheelchair as recited in claim 8, wherein said rear wheels are electrically powered wheels.

10. The foldable electric wheelchair as claimed in claim 8, wherein the support frame is provided with a seat plate.