CN212816832U

CN212816832U - Folding wheelchair

Info

Publication number: CN212816832U
Application number: CN202021025788.9U
Authority: CN
Inventors: 张钊
Original assignee: Dongguan Prestige Sporting Products Co Ltd
Current assignee: Guangdong Qunwang Technology Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-03-30
Anticipated expiration: 2030-06-05

Abstract

The utility model discloses a folding wheelchair, which comprises an underframe, a first supporting rod, a second supporting rod, a seat body and a third supporting rod; the lower end of the first supporting rod is pivoted to the front end of the bottom frame, and the upper end of the first supporting rod is pivoted to the lower end of the third supporting rod; the lower end of the second support rod is pivoted to the rear end of the base frame, the upper end of the second support rod is pivoted to the front end of the base body, and the third support rod is pivoted to the rear end of the base body; the first support rod and the second support rod are arranged in a crossed mode, a sliding groove is formed in the middle of one of the first support rod and the second support rod along the length direction of the first support rod and the second support rod, a middle shaft is arranged on the other of the first support rod and the second support rod, and the middle shaft is inserted into the sliding groove in a sliding mode, so that the first support rod and the second support rod can slide mutually to be folded or unfolded. The utility model has the advantages of simple structure and convenient use.

Description

Folding wheelchair

Technical Field

The utility model relates to a folding wheelchair, in particular to a folding wheelchair with simple structure and convenient use.

Background

Wheelchairs are generally very bulky and are usually reduced in size by folding for convenient storage. However, the existing foldable wheelchair support has a complex structure, more folding actions and complicated operation, so that for some people who are inconvenient to move or older, great effort is required for folding the wheelchairs; therefore, the existing folding wheelchair brings inconvenience to the use of the handicapped people to a certain extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a folding wheelchair with simple structure and convenient use.

In order to achieve the above purpose, the utility model provides a folding wheelchair, which comprises an underframe, a first support rod, a second support rod, a seat body and a third support rod; the lower end of the first supporting rod is pivoted to the front end of the bottom frame, and the upper end of the first supporting rod is pivoted to the lower end of the third supporting rod; the lower end of the second support rod is pivoted to the rear end of the base frame, the upper end of the second support rod is pivoted to the front end of the base body, and the third support rod is pivoted to the rear end of the base body; the first support rod and the second support rod are arranged in a crossed mode, a sliding groove is formed in the middle of one of the first support rod and the second support rod along the length direction of the first support rod and the second support rod, a middle shaft is arranged on the other of the first support rod and the second support rod, and the middle shaft is inserted into the sliding groove in a sliding mode, so that the first support rod and the second support rod can slide mutually to be folded or unfolded.

The utility model is provided with the first support rod and the second support rod, the middle part of one of the first support rod and the second support rod is provided with the chute, the middle part of the other support rod is provided with the middle shaft, and the middle shaft is arranged in the chute in a sliding way, so that the first support rod and the second support rod can be alternately unfolded or folded; in addition, the upper end of the first supporting rod is pivoted with the lower end of the third supporting rod, the upper end of the third supporting rod is pivoted with the rear end of the seat body, and the upper end of the second supporting rod is pivoted with the front end of the seat body, so that a deformable and foldable quadrilateral structure can be formed among the first supporting rod, the second supporting rod, the third supporting rod and the seat body, the whole wheelchair frame can be folded or unfolded, the structure is simple, all the rod pieces can be linked with one another, the purpose of one-time folding or unfolding can be achieved only by driving one of the first supporting rod and the second supporting rod, and the wheelchair frame is very convenient to use.

Preferably, the foldable support device further comprises an adjusting device disposed between the first support rod and the second support rod, so that the first support rod and the second support rod are locked in a folded state or an unfolded state. The relative positions of the first supporting rod and the second supporting rod can be positioned through the adjusting device, so that the purpose of locking is achieved, and the stability of the folded wheelchair after unfolding is ensured.

Preferably, the adjusting device is a telescopic device, an extending end of the telescopic device is pivoted to the lower end of the first supporting rod, and the other end of the telescopic device is pivoted to the middle shaft. The first support rod and the second support rod can be driven to automatically adjust the positions by utilizing the expansion piece without manual operation, so that automatic unfolding and folding are realized.

Specifically, the telescopic device is provided with a guide wheel, one side of the first supporting rod is provided with a guide rail along the length direction, and the guide wheel is arranged on the guide rail in a rolling manner. The cooperation of leading wheel with the guide rail can make the expansion bend ware, first bracing piece and second bracing piece three move more stably.

Preferably, the front end of the underframe is provided with a front wheel, and the rear end is provided with a rear wheel.

Preferably, a bracket is arranged at the front end of the underframe in a sliding and telescopic manner. The bracket can extend out of the bottom frame when in use to support the foot part, and can retract into the bottom frame when not in use, so that the occupied volume is reduced, and the structure of the folded frame is more compact.

Specifically, foldable wing parts are arranged on two sides of the bracket. The wing part can be opened when in use to support the foot part, and can be folded when not in use, thereby reducing the occupied volume and leading the structure of the folded frame to be more compact.

Preferably, the upper end of the third support rod extends upwards to form a backrest support rod.

Specifically, the folding wheelchair further comprises a fourth support rod, and the rear end of the fourth support rod is pivoted to the upper end of the backrest support rod.

Specifically, the folding wheelchair further comprises a supporting component, the upper end of the supporting component is pivoted to the fourth supporting rod, and the lower end of the supporting component is pivoted to the seat body. Through setting up supporting component and fourth bracing piece can make the handrail follow opening or folding up of folding wheelchair, need not secondary operation, improves the convenience of using.

Specifically, the support assembly includes an outer sleeve and an inner shaft, the inner shaft is telescopically sleeved on the outer sleeve, the lower end of the inner shaft is pivoted to the base, and the upper end of the outer sleeve is pivoted to the fourth support rod. Through the cooperation of overcoat and interior axle, can make the height-adjustable of fourth bracing piece to reinforcing suitability improves the travelling comfort of taking advantage of the seat.

Specifically, the support assembly comprises a locking shaft, and the side walls of the outer sleeve and the inner shaft are provided with locking holes, and the locking shaft can be inserted into or withdrawn from the two locking holes so as to lock or unlock the outer sleeve and the inner shaft.

Specifically, a grab rail is arranged on the fourth supporting rod in a sliding mode.

Drawings

Fig. 1 is a perspective view of the folding wheelchair of the present invention when unfolded.

Figure 2 is another perspective view of the folding wheelchair of the present invention when unfolded.

Figure 3 is a side view of the folding wheelchair of the present invention when unfolded.

Fig. 4 is an enlarged view of a portion a of fig. 2.

Fig. 5 is a movement diagram of each rod when the folding wheelchair of the present invention is folded.

Fig. 6 is a state diagram of the folding wheelchair of the present invention after being folded.

Detailed Description

In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

As shown in fig. 1 to 3, the foldable wheelchair 100 of the present invention includes a bottom frame 1, a first support bar 2, a second support bar 3, a seat body 4 and a third support bar 5; the first support bar 2, the second support bar 3 and the third support bar 5 are disposed between the base 4 and the bottom frame 1 and located at two sides of the bottom frame 1, and two sides of the foldable wheelchair 100 are completely symmetrical. The present application takes one side as an example for explanation. The lower end of the first supporting rod 2 is pivoted to the front end of the base frame 1 to form a first pivoting point A; the upper end of the first support rod 2 is pivoted with the lower end of the third support rod 5 to form a second pivot point B; the lower end of the second support rod 3 is pivoted to the rear end of the base frame 1 to form a third pivot point C; the upper end of the second support rod 3 is pivoted to the front end of the seat body 4 to form a fourth pivot point D; the third support rod 5 is pivoted to the pivoting seat at the rear end of the seat 4 to form a fifth pivoting point E. A deformable and foldable first quadrilateral structure is formed among the first support rod 2, the second support rod 3, the third support rod 5 and the seat body 4. First bracing piece 2 and second bracing piece 3 are the cross setting, just spout 21 has been seted up along the length direction of self to the side of one of them of first bracing piece 2 and second bracing piece 3, another of first bracing piece and second bracing piece 3 is equipped with axis 31, sets up spout 21 on the first bracing piece 2 of this application, is equipped with axis 31 on the second bracing piece 3. The middle shaft 31 is located between the two second support rods 3, the middle portion of each second support rod 3 is bent to protrude towards the inner side of the foldable wheelchair 100, a structure with a narrow middle portion and wide two ends is formed between the two second support rods 3, and the two ends of the middle shaft 31 are arranged at the protruding points of the two second support rods 3. The first supporting rod 2 is of a U-shaped structure, and rod pieces on two sides are located between the second supporting rods 3. The middle shaft 31 is inserted into the sliding groove 21 in a sliding manner, so that the first support rod 2 and the second support rod 3 can slide relative to each other to be folded or unfolded.

Referring to fig. 2 to 4, the foldable wheelchair 100 further includes an adjusting device disposed between the first support rod 2 and the second support rod 3, so that the first support rod 2 and the second support rod 3 are locked in a folded state or an unfolded state. The relative positions of the first support rod 2 and the second support rod 3 can be positioned through the adjusting device, so that the purpose of locking is achieved, and the stability of the folded wheelchair 100 after being unfolded is ensured. This application adjusting device is expansion bend 6, expansion bend 6 is the automatic flexible drive arrangement of circular telegram back, expansion bend 6 is located between two members of first bracing piece 2, the end that stretches out of expansion bend 6 through a pivot 22 pin joint in the lower extreme of first bracing piece 2, the other end of expansion bend 6 connect in axis 31, so that it with be the pin joint state between the second bracing piece 3. This application expansion bend 6 is electric putter, electric putter is connected with power and the circuit control board electricity that sets up on the base to realize automatic opening and close. The first support rod 2 and the second support rod 3 can be driven by the expansion piece 6 to automatically adjust the positions without manual operation, so that automatic unfolding and folding are realized. Guide wheels 61 are arranged on two sides of the telescopic device 6, the guide wheels 61 are coaxially arranged with the middle shaft 31, guide rails 23 are arranged on the inner sides of the first supporting rods 2 along the length direction, and the guide wheels 61 are arranged on the guide rails 23 in a rolling manner. The cooperation of leading wheel 61 with guide rail 23 can make the operation of expansion bend 6, first bracing piece 2 and second bracing piece 3 three more stable. The front end of chassis 1 has one and stretches out chassis 1 outer ear 11, ear 11 is equipped with front wheel 7, front wheel 7 is the universal wheel, the rear end of chassis 1 is equipped with rear wheel 8, rear wheel 8 is by motor drive.

Referring to fig. 1, a bracket 9 is slidably and telescopically disposed at the front end of the chassis 1. Foldable wing parts 91 are arranged on two sides of the bracket 9, and the inner sides of the wing parts 91 are pivoted to the bracket 9 through a rotating shaft 92, so that the wing parts 91 can be turned relative to the bracket 9. The bracket 9 and the wing part 91 can be opened when in use to support feet, and can be folded when not in use, so that the occupied volume is reduced, and the folded frame structure is more compact.

As shown in fig. 1 and 3, a backrest support rod 51 extends upward from the upper end of the third support rod 5. The foldable wheelchair 100 further includes a fourth supporting rod 110 and a supporting component 120, wherein the rear end of the fourth supporting rod 110 is pivotally connected to the upper end of the backrest supporting rod 51 to form a sixth pivot point F. The upper end of the supporting component 120 is pivotally connected to the fourth supporting rod 110 to form a seventh pivot point G, and the lower end of the supporting component 120 is pivotally connected to the seat 4 to form an eighth pivot point H. A grab bar 130 is slidably disposed on the fourth support bar 110. By providing the support assembly 120 and the fourth support rod 110, the armrests can be opened or folded along with the folding wheelchair 100, so that the secondary operation is not required, and the convenience of use is improved. A deformable second quadrilateral structure is formed among the third support bar 5, the fourth support bar 110, the support assembly 120 and the base 4. The first quadrilateral structure and the second quadrilateral structure are mutually linked.

Referring to fig. 3, the supporting assembly 120 is telescopically adjustable, and includes an outer sleeve 121, an inner shaft 122, a fixing sleeve 123, an elastic member and a locking shaft, wherein the inner shaft 122 is telescopically sleeved on the outer sleeve 121, a lower end of the inner shaft 122 is pivotally connected to the base 4, and an upper end of the outer sleeve 121 is pivotally connected to the fourth supporting rod 110. The fixing sleeve 123 is fixed outside the outer sleeve 121, the locking shaft is arranged on the fixing sleeve 123, and the elastic piece is arranged on the locking shaft and the fixing sleeve 123. The side walls of the outer sleeve 121 and the inner shaft 122 are provided with locking holes, and the locking shafts can be inserted into the two locking holes under the action of elastic pieces so as to lock the outer sleeve 121 and the inner shaft 122. When the locking shaft is pulled to exit the locking hole, the outer sleeve 121 and the inner shaft 122 can be unlocked and adjusted. The height of the fourth support bar 110 can be adjusted by the matching of the outer sleeve 121 and the inner shaft 122, so that the applicability is enhanced, and the comfort of the sitting is improved.

With the above and with reference to fig. 5 and 6, the folding and unfolding processes of the foldable wheelchair 100 of the present invention will be described in detail as follows:

when the foldable wheelchair 100 needs to be folded, the telescopic device 6 is started to contract the telescopic end of the telescopic device 6, and the telescopic device 6 drives the middle shaft 31 to move downwards along the sliding groove 21. At this time, the second support rod 3 and the first support rod 2 move relatively and move close to each other in the direction of the base frame 1. Meanwhile, the quadrilateral structure formed among the first support rod 2, the second support rod 3, the third support rod 5 and the base body 4 is deformed, the lower end of the third support rod 5 swings backwards, and the front end of the base body 4 moves towards the front lower part, so that the base body 4 integrally moves downwards and approaches the underframe 1. In addition, the upper end of the third support rod 5 swings forward, so as to drive the fourth support rod 110 and the support assembly 120 to swing and approach the base 4. Finally, when the telescopic end of the telescopic device 6 is completely contracted, the middle shaft 31 slides from the upper end of the sliding groove 21 to the lower end of the sliding groove 21, and the first support rod 2, the second support rod 3, the third support rod 5, the seat body 4, the fourth support rod 110 and the support assembly 120 are completely closed and folded. When the foldable wheelchair 100 needs to be unfolded, the first support rod 2, the second support rod 3, the third support rod 5, the seat body 4, the fourth support rod 110 and the support assembly 120 can be completely unfolded only by controlling the telescopic end of the telescopic device 6 to be opened. After the telescopic end of the telescopic device 6 is fully extended, the foldable wheelchair 100 can be unfolded and locked in the unfolded state.

The utility model arranges the first support rod 2 and the second support rod 3, the middle part of one of the two is provided with the chute 21, the middle part of the other one is provided with the middle shaft 31, and the middle shaft 31 is arranged in the chute 21 in a sliding way, so that the first support rod 2 and the second support rod 3 can be alternately unfolded or folded; in addition, the upper end of the first support rod 2 is pivoted with the lower end of the third support rod 5, the upper end of the third support rod 5 is pivoted with the rear end of the seat body 4, and the upper end of the second support rod 3 is pivoted with the front end of the seat body 4, so that a deformable and foldable quadrilateral structure can be formed among the first support rod 2, the second support rod 3, the third support rod 5 and the seat body 4, therefore, the whole wheelchair frame can be folded or unfolded, the structure is simple, all the rod pieces can be linked with one another, the purpose of one-time folding or unfolding can be achieved only by driving one of the first support rod 2 and the second support rod 3, and the use is very convenient.

The above disclosure is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereto, and therefore, the scope of the present invention is not limited to the above embodiments.

Claims

1. A folding wheelchair, characterized in that: comprises an underframe, a first supporting rod, a second supporting rod, a seat body and a third supporting rod; the lower end of the first supporting rod is pivoted to the front end of the bottom frame, and the upper end of the first supporting rod is pivoted to the lower end of the third supporting rod; the lower end of the second support rod is pivoted to the rear end of the base frame, the upper end of the second support rod is pivoted to the front end of the base body, and the third support rod is pivoted to the rear end of the base body; the first support rod and the second support rod are arranged in a crossed mode, a sliding groove is formed in the middle of one of the first support rod and the second support rod along the length direction of the first support rod and the second support rod, a middle shaft is arranged on the other of the first support rod and the second support rod, and the middle shaft is inserted into the sliding groove in a sliding mode, so that the first support rod and the second support rod can slide mutually to be folded or unfolded.

2. The folding wheelchair as claimed in claim 1, wherein: the adjusting device is arranged between the first supporting rod and the second supporting rod, so that the first supporting rod and the second supporting rod are locked in a folding state or an unfolding state.

3. A folding wheelchair as claimed in claim 2, wherein: the adjusting device is a telescopic device, the extending end of the telescopic device is pivoted to the lower end of the first supporting rod, and the other end of the telescopic device is pivoted to the middle shaft.

4. A folding wheelchair as claimed in claim 3, wherein: the telescopic device is provided with a guide wheel, one side of the first supporting rod is provided with a guide rail along the length direction, and the guide wheel is arranged on the guide rail in a rolling manner.

5. The folding wheelchair as claimed in claim 1, wherein: the front end of the chassis is provided with a front wheel, and the rear end of the chassis is provided with a rear wheel.

6. The folding wheelchair as claimed in claim 1, wherein: the front end of the underframe is provided with a bracket in a sliding and telescopic manner.

7. The folding wheelchair as claimed in claim 6, wherein: foldable wing parts are arranged on two sides of the bracket.

8. The folding wheelchair as claimed in claim 1, wherein: the upper end of the third supporting rod extends upwards to form a back supporting rod.

9. The folding wheelchair as claimed in claim 8, wherein: the folding wheelchair further comprises a fourth supporting rod, and the rear end of the fourth supporting rod is pivoted to the upper end of the backrest supporting rod.

10. The folding wheelchair as claimed in claim 9, wherein: the folding wheelchair further comprises a supporting component, the upper end of the supporting component is pivoted to the fourth supporting rod, and the lower end of the supporting component is pivoted to the seat body.

11. A folding wheelchair as claimed in claim 10, wherein: the support assembly comprises an outer sleeve and an inner shaft, the inner shaft is telescopically sleeved on the outer sleeve, the lower end of the inner shaft is pivoted on the base body, and the upper end of the outer sleeve is pivoted on the fourth support rod.

12. A folding wheelchair as claimed in claim 11, wherein: the support component comprises a locking shaft, and the side walls of the outer sleeve and the inner shaft are provided with locking holes, and the locking shaft can be inserted into or withdrawn from the two locking holes so as to lock or unlock the outer sleeve and the inner shaft.

13. The folding wheelchair as claimed in claim 9, wherein: and a grab rail is arranged on the fourth supporting rod in a sliding manner.