CN214018183U - Folding wheelchair frame - Google Patents

Folding wheelchair frame Download PDF

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Publication number
CN214018183U
CN214018183U CN202021661436.2U CN202021661436U CN214018183U CN 214018183 U CN214018183 U CN 214018183U CN 202021661436 U CN202021661436 U CN 202021661436U CN 214018183 U CN214018183 U CN 214018183U
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China
Prior art keywords
frame
rod
wheelchair
bar linkage
wheel assembly
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CN202021661436.2U
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Chinese (zh)
Inventor
梁松兴
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Zhongshan Aolike Medical Equipment Technology Co ltd
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Zhongshan Aolike Medical Equipment Technology Co ltd
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Priority to CN202021661436.2U priority Critical patent/CN214018183U/en
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Abstract

The utility model discloses a folding wheelchair frame, include: the wheelchair comprises a front wheel assembly, a rear wheel assembly, a foldable wheelchair main body and a locking device; the four-bar linkage mechanism which enables the front wheel assembly and the rear wheel assembly to be folded and unfolded is arranged between the front wheel assembly and the wheelchair main body, the locking device is arranged on the wheelchair main body and used for enabling the wheelchair main body to be kept stable after being unfolded, during use, the foldable wheelchair main body can be kept stable under the action of the locking device, when the wheelchair is not used, the locking device is unlocked, the foldable wheelchair main body can be folded, in addition, the front wheel assembly and the rear wheel assembly can also be folded and unfolded through the four-bar linkage mechanism, the space is saved, and the transportation is convenient.

Description

Folding wheelchair frame
Technical Field
The utility model relates to a field medical equipment field, in particular to folding wheelchair frame.
Background
With the development of medical technology, the number of large-scale surgery patients is increased. People need to be in bed for a long time after undergoing major surgery. Occasional out-of-bed activities after a slightly stable condition may be beneficial for more rapid recovery of physical health. However, due to the operation, the patient is difficult to independently get out of the bed for activity, the wheelchair is a good tool for walking instead of walk, and most people can get out of the bed for activity by means of the wheelchair. In addition, many elderly people have inconvenience in legs and feet and need to move better with the help of a wheelchair. The existing wheelchair frame has the problems of large volume, incapability of being folded, large occupied space when not used, inconvenience for transportation and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a folding wheelchair frame, this folding wheelchair frame has advantages such as convenient folding, saving space, convenient transportation.
According to the utility model discloses an embodiment of first aspect provides a folding wheelchair frame, including: the wheelchair comprises a front wheel assembly, a rear wheel assembly, a foldable wheelchair main body and a locking device; a four-bar linkage mechanism which enables the front wheel assembly and the rear wheel assembly to be folded and unfolded is arranged between the front wheel assembly and the wheelchair main body, and the locking device is arranged on the wheelchair main body and used for keeping the wheelchair main body stable after being opened.
According to the utility model discloses walking stick has following technological effect at least:
most unable folding of current wheelchair, occupation space is big, unfavorable transportation when having bulky, unable folding, not using, the utility model provides a collapsible wheelchair frame, during the use, collapsible wheelchair main part can remain stable under locking device's effect, when not using, unties locking device, and collapsible wheelchair main part can realize folding, and front wheel subassembly and rear wheel subassembly also can be folded through four-bar linkage folding, practice thrift space, convenient transportation.
According to some embodiments of the present invention, the wheelchair main body comprises an upper four-bar linkage and a lower four-bar linkage, the upper four-bar linkage and the lower four-bar linkage are rotatably connected together, and the upper four-bar linkage is capable of being linked to the lower four-bar linkage.
According to some embodiments of the invention, the upper four-bar linkage comprises: a backrest frame, a cushion frame and an armrest frame; the rear end of cushion frame with back frame rotatable coupling in the first tie point of back frame, the handrail frame includes head rod and second connecting rod, the head rod with second connecting rod rotatable coupling, the head rod with back frame rotatable coupling in the second tie point of back frame, the head rod sets up the top of second tie point, the second connecting rod with cushion frame rotatable coupling.
According to some embodiments of the invention, the lower four-bar linkage comprises: the cushion frame, the backrest frame, the connecting frame and the connecting rod are arranged on the backrest frame; the connecting frame is rotatably connected to a third connecting point of the backrest frame, the third connecting point is arranged below the second connecting point, and the connecting frame is rotatably connected with the rear end of the connecting rod; the front end of the connecting rod is rotatably connected with the cushion frame.
According to some embodiments of the utility model, the cushion frame with be equipped with the connecting piece between the connecting rod, connecting piece one end and cushion frame fixed connection, the other end and connecting rod rotatable coupling.
According to some embodiments of the invention, the locking device comprises: first articulated seat and the articulated seat of second, first articulated seat sets up on the back frame, the articulated seat of second sets up on the link, the articulated back of first articulated seat and the articulated back of the articulated seat of second forms court the contained angle of front wheel subassembly direction is alpha, and 90< alpha < 180.
According to some embodiments of the utility model, be equipped with elastic buckle on the back frame, be equipped with the fastener on the link, elastic buckle, the last joint post that is equipped with of elastic buckle, be equipped with the joint hole on the fastener, joint post joint is in the joint is downthehole.
According to some embodiments of the present invention, a buffer member is provided between the back frame and the connecting frame, and the buffer member is fixed to the back frame or the connecting frame.
According to some embodiments of the invention, the four bar linkage comprises: the connecting rod, the connecting frame, the supporting frame and the connecting support rod are arranged on the connecting rod; one end of the connecting strut is rotatably connected with the connecting rod, the other end of the connecting strut is rotatably connected with the front end of the supporting frame, and the rear end of the supporting frame is rotatably connected with the connecting frame; the front wheel assembly is connected to the connecting support rod, and the rear wheel assembly is connected to the connecting rod.
According to some embodiments of the present invention, a foot rest is provided at the front end of the support frame; the pedal frame is rotatably connected with the support frame.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a first overall schematic diagram of an embodiment of the present invention;
FIG. 2 is a second overall schematic diagram of the embodiment of the present invention;
FIG. 3 is a schematic view of a support frame according to an embodiment of the present invention;
FIG. 4 is a schematic view of an armrest frame assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view of the connection between the backrest frame and the connecting frame according to the embodiment of the present invention;
FIG. 6 is a schematic view of a back frame assembly according to an embodiment of the present invention;
fig. 7 is a schematic view of a connector assembly according to an embodiment of the present invention.
Reference numerals: the front wheel assembly 1, the rear wheel assembly 2, the locking device 4, the backrest frame 31, the seat cushion frame 33, the armrest frame 32, the first connecting rod 321, the second connecting rod 322, the connecting frame 35, the connecting rod 34, the connecting piece 5, the first hinged seat 311, the second hinged seat 351, the elastic buckle 41, the clamping piece 42, the clamping column 411, the clamping hole 421, the buffer piece 7, the supporting frame 36, the connecting support rod 37 and the pedal frame 6.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like 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 invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that if an orientation description is referred to, for example, the directions or positional relationships indicated by the upper, lower, front, rear, left, right, etc. are the directions or positional relationships shown on the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if there are several, greater than, less than, exceeding, above, below, within, etc., the terms, wherein several means are one or more, and several means are two or more, and greater than, less than, exceeding, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number.
In the description of the present invention, if the terms first, second, etc. appear, they are only used for distinguishing technical features, but they are not to be interpreted as indicating or implying relative importance or implying that the number of the indicated technical features is indicated or that the precedence of the indicated technical features is implied.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
As shown in fig. 1 and 2, one embodiment of the present invention provides a folding wheelchair frame, including: a front wheel assembly 1, a rear wheel assembly 2, a foldable wheelchair main body and a locking device 4; be equipped with the four-bar linkage who makes front wheel subassembly 1 and rear wheel subassembly 2 take up and unfold between front wheel subassembly 1 and rear wheel subassembly 2 and the wheelchair main part, locking device 4 sets up in the wheelchair main part, locking device 4 is used for making the wheelchair main part open the back and remain stable, during the use, collapsible wheelchair main part can remain stable under locking device 4's effect, when not using, untie locking device 4, collapsible wheelchair main part can realize folding, in addition, front wheel subassembly 1 and rear wheel subassembly 2 also can take up and unfold through four-bar linkage, save space, convenient transportation.
As shown in fig. 1 and 2, according to some embodiments of the present invention, the wheelchair main body includes an upper four-bar linkage and a lower four-bar linkage, the upper four-bar linkage and the lower four-bar linkage are rotatably connected together, the upper four-bar linkage is folded and unfolded to link the lower four-bar linkage together, the upper four-bar linkage and the lower four-bar linkage share a part of the connecting rod, the upper four-bar linkage drives the lower four-bar linkage to be folded and unfolded together when folded and unfolded, and it is very convenient to fold and unfold the wheelchair main body.
As shown in fig. 1, 2, and 4, according to some embodiments of the present invention, the upper four-bar linkage includes: a backrest frame 31, a seat cushion frame 33, and an armrest frame 32; the rear end of the cushion frame 33 and the backrest frame 31 are rotatably connected to a first connecting point of the backrest frame 31, the armrest frame 32 comprises a first connecting rod 321 and a second connecting rod 322, the first connecting rod 321 and the second connecting rod 322 are rotatably connected, the first connecting rod 321 and the backrest frame 31 are rotatably connected to a second connecting point of the backrest frame 31, the first connecting point is arranged above the second connecting point, the second connecting rod 322 is rotatably connected with the cushion frame 33, when the wheelchair main body needs to be folded, the backrest frame 31 is pressed downwards to enable the backrest frame 31 to approach the cushion frame 33, meanwhile, the first connecting rod 321 of the armrest frame 32 also approaches the second connecting rod 322, folding is completed, the folding mode is simple, and operation is convenient.
As shown in fig. 1 and 2, according to some embodiments of the present invention, the lower four-bar linkage comprises: a cushion frame 33, a backrest frame 31, a connecting frame 35 and a connecting rod 34; the connecting frame 35 is rotatably connected to a third connecting point of the backrest frame 31, the third connecting point is arranged below the second connecting point, and the connecting frame 35 is rotatably connected with the rear end of the connecting rod 34; the front end of the connecting rod 34 is rotatably connected with the cushion frame 33, the connecting rod shared by the lower four-bar linkage mechanism and the upper four-bar linkage mechanism is the backrest frame 31 and the cushion frame 33, when the wheelchair main body is folded, the backrest frame 31 approaches to the cushion frame 33, the connecting frame 35 rotates outwards, and the connecting rod 34 approaches to the cushion frame 33, so that the folding of the lower four-bar linkage mechanism is completed.
As shown in fig. 1 and 2, according to some embodiments of the present invention, a connecting member 5 is disposed between the cushion frame 33 and the connecting rod 34, one end of the connecting member 5 is fixedly connected to the cushion frame 33, the other end is rotatably connected to the connecting rod 34, the connecting member 5 plays a transitional role, and the connecting rod 34 is conveniently connected to the cushion frame 33 by the design of the connecting member 5.
As shown in fig. 5, according to some embodiments of the present invention, the locking device 4 comprises: first articulated seat 311 and the articulated seat 351 of second, first articulated seat sets up on 331 back frame 31, the articulated seat 351 of second sets up on link 35, the articulated contained angle that forms towards the direction of front wheel subassembly 1 after first articulated seat 311 and the articulated seat 351 of second is alpha, and 90 degrees < alpha <180, when expanding the wheelchair main part, the wheelchair main part keeps stable state under locking device 4's effect, when will folding up the wheelchair main part, make alpha be greater than 180 and can make locking device unblock, make the wheelchair main part fold up.
As shown in fig. 5-7, according to some embodiments of the present invention, elastic buckle 41 is disposed on backrest frame 31, clamping element 42 is disposed on link 35, elastic buckle 41 is disposed on elastic buckle, clamping column 411 is disposed on elastic buckle, clamping hole 421 is disposed on clamping element 42, clamping column 411 is connected to clamping element 421, connection between elastic buckle 41 and clamping element 42 makes the wheelchair main body more stable after being opened, and since clamping column 411 is connected to clamping hole 421, it will not easily be separated when bearing external force or external vibration, so that the wheelchair main body will not easily fold or fall apart when bearing external force or external vibration after being unfolded.
As shown in fig. 5-7, according to some embodiments of the present invention, a buffer 7 is disposed between the backrest frame 31 and the connecting frame 35, the buffer 7 is fixed on the backrest frame 31 or the connecting frame 35, the buffer 7 can effectively reduce the vibration and prevent the friction between the backrest frame 31 and the connecting frame 35, so as to protect the backrest frame 31 and the connecting frame 35 from being damaged, and the buffer 7 can be made of rubber or foam.
As shown in fig. 1 and 2 and 3, according to some embodiments of the present invention, a four-bar linkage includes: a connecting rod 34, a connecting frame 35, a supporting frame 36 and a connecting support rod 37; one end of the connecting strut 37 is rotatably connected with the connecting rod 34, the other end is rotatably connected with the front end of the supporting frame 36, and the rear end of the supporting frame 36 is rotatably connected with the connecting frame 35; the front wheel assembly 1 is connected to the connecting support rod 37, the rear wheel assembly 2 is connected to the connecting rod 34, the connecting support rod 37 and the connecting rod 34 are driven to fold through backward rotation of the connecting frame 35, and therefore the front wheel assembly 1 and the rear wheel assembly 2 are folded, the connecting frame 35 and the connecting rod 34 are shared by the four-bar mechanism and the lower four-bar mechanism, and therefore when the wheelchair main body is folded, the front wheel assembly 1 and the rear wheel assembly 2 can also be folded together.
As shown in fig. 1 and 2, according to some embodiments of the present invention, the front end of the supporting frame 36 is provided with a foot rest 6; the pedal frame 6 is rotatably connected with the supporting frame 36, the pedal frame 6 is convenient for patients or the old to put feet, and when the wheelchair is not used, the pedal frame 6 can also be rotated and folded, so that the wheelchair occupies smaller space.
In the description of the present specification, if reference is made to the description of "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", and "some examples", etc., it is intended that a particular feature, structure, material, or characteristic described in connection with the embodiment or example be included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. Folding wheelchair frame, its characterized in that includes: a front wheel assembly (1), a rear wheel assembly (2), a foldable wheelchair main body and a locking device (4); a four-bar linkage mechanism enabling the front wheel assembly (1) and the rear wheel assembly (2) to be folded and unfolded is arranged between the front wheel assembly (1) and the rear wheel assembly (2) and the wheelchair main body, the locking device (4) is arranged on the wheelchair main body, and the locking device (4) is used for enabling the wheelchair main body to be kept stable after being opened; the wheelchair main body comprises an upper four-bar linkage mechanism and a lower four-bar linkage mechanism, the upper four-bar linkage mechanism and the lower four-bar linkage mechanism are rotatably connected together, and the upper four-bar linkage mechanism can be linked with the lower four-bar linkage mechanism for folding and unfolding.
2. The folding wheelchair frame of claim 1 wherein said upper four bar linkage comprises: a backrest frame (31), a cushion frame (33) and an armrest frame (32); the rear end of cushion frame (33) with back frame (31) rotatable coupling in the first tie point of back frame (31), handrail frame (32) include head rod (321) and second connecting rod (322), head rod (321) with second connecting rod (322) rotatable coupling, head rod (321) with back frame (31) rotatable coupling in the second tie point of back frame (31), the first tie point sets up the top of second tie point, second connecting rod (322) with cushion frame (33) rotatable coupling.
3. The folding wheelchair frame of claim 2 wherein said lower four-bar linkage comprises: the cushion frame (33), the backrest frame (31), the connecting frame (35) and the connecting rod (34); the connecting frame (35) is rotatably connected to a third connecting point of the backrest frame (31), the third connecting point is arranged below the second connecting point, and the connecting frame (35) is rotatably connected with the rear end of the connecting rod (34); the front end of the connecting rod (34) is rotatably connected with the cushion frame (33).
4. A folding wheelchair frame as claimed in claim 3, characterized in that a connecting member (5) is provided between the cushion frame (33) and the connecting rod (34), one end of the connecting member (5) being fixedly connected to the cushion frame (33) and the other end being rotatably connected to the connecting rod (34).
5. A folding wheelchair frame as claimed in claim 3, characterized in that the locking device (4) comprises: the backrest frame comprises a first hinged seat (311) and a second hinged seat (351), the first hinged seat is arranged on (331) the backrest frame (31), the second hinged seat (351) is arranged on the connecting frame (35), an included angle formed after the first hinged seat (311) is hinged to the second hinged seat (351) and towards the direction of the front wheel assembly (1) is alpha, and 90 degrees < alpha <180 degrees.
6. The folding wheelchair frame of claim 5, wherein the backrest frame (31) is provided with an elastic buckle (41), the connecting frame (35) is provided with a clamping piece (42), the elastic buckle (41) is provided with a clamping column (411), the clamping piece (42) is provided with a clamping hole (421), and the clamping column (411) is clamped in the clamping hole (421).
7. A folding wheelchair frame as claimed in claim 3, characterized in that a buffer (7) is provided between the back frame (31) and the connecting frame (35), which buffer (7) is fixed to the back frame (31) or the connecting frame (35).
8. A folding wheelchair frame as claimed in claim 3, wherein the four-bar linkage comprises: the connecting rod (34), the connecting frame (35), the supporting frame (36) and the connecting support rod (37); one end of the connecting support rod (37) is rotatably connected with the connecting rod (34), the other end of the connecting support rod is rotatably connected with the front end of the support frame (36), and the rear end of the support frame (36) is rotatably connected with the connecting frame (35); the front wheel assembly (1) is connected to the connecting support rod (37), and the rear wheel assembly (2) is connected to the connecting rod (34).
9. The frame for a folding wheelchair as claimed in claim 8, characterized in that the front end of the support frame (36) is provided with a foot rest (6); the pedal frame (6) is rotatably connected with the support frame (36).
CN202021661436.2U 2020-08-11 2020-08-11 Folding wheelchair frame Active CN214018183U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021661436.2U CN214018183U (en) 2020-08-11 2020-08-11 Folding wheelchair frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021661436.2U CN214018183U (en) 2020-08-11 2020-08-11 Folding wheelchair frame

Publications (1)

Publication Number Publication Date
CN214018183U true CN214018183U (en) 2021-08-24

Family

ID=77332243

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021661436.2U Active CN214018183U (en) 2020-08-11 2020-08-11 Folding wheelchair frame

Country Status (1)

Country Link
CN (1) CN214018183U (en)

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