CN110755215A

CN110755215A - Folding wheelchair support

Info

Publication number: CN110755215A
Application number: CN201911034094.3A
Authority: CN
Inventors: 张钊
Original assignee: DONGGUAN WEIXIN SPORTS ARTICLES Co Ltd
Current assignee: DONGGUAN WEIXIN SPORTS ARTICLES Co Ltd; Dongguan Prestige Sporting Products Co Ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-02-07

Abstract

The invention discloses a folding wheelchair bracket, which comprises a first supporting rod, a second supporting rod, a third supporting rod, a bottom rod, a connecting rod, a seat body and a locking mechanism, wherein the first supporting rod is connected with the second supporting rod through the connecting rod; the upper end of the first supporting rod is pivoted with the second supporting rod, and the lower end of the first supporting rod is pivoted with one end of the bottom rod; the lower end of the second supporting rod is pivoted with the upper end of the third supporting rod; the lower end of the third supporting rod is pivoted with the other end of the bottom rod; one end of the connecting rod is pivoted with the front end of the seat body, and the other end of the connecting rod is pivoted with the middle part of the first supporting rod; the rear end of the seat body is pivoted with the third supporting rod; the locking mechanism is arranged between the first support rod and the second support rod and can lock or unlock the first support rod and the second support rod mutually. The folding wheelchair bracket has the advantages of simple and convenient folding, small volume after folding, convenient carrying and storage and low cost.

Description

Folding wheelchair support

Technical Field

The invention relates to a folding wheelchair support, in particular to a folding wheelchair support which is simple and convenient to fold, small in size after being folded, convenient to carry and store and low in cost.

Background

The existing wheelchairs are generally in a non-foldable form, have larger volume, occupy larger storage space when not in use, and are inconvenient to carry and store. Therefore, the volume of the portable electronic device is reduced by adopting a folding mode, so that the portable electronic device is convenient to store and carry. However, there are two folding methods for the existing folding wheelchair, one is manual folding, and the other is automatic folding. The manual folding has more folding actions and inconvenient operation, and for some people with inconvenient actions or older ages, great effort needs to be consumed; although the automatic folding is convenient to operate, the folding structure is complex, the cost is high, the price is high, and the economic pressure is great for the disabled.

Disclosure of Invention

The invention aims to provide a folding wheelchair support which is simple and convenient to fold, small in size after being folded, convenient to carry and store and low in cost.

In order to achieve the purpose, the folding wheelchair support provided by the invention comprises a first support rod, a second support rod, a third support rod, a bottom rod, a connecting rod, a seat body and a locking mechanism; the upper end of the first supporting rod is pivoted with the second supporting rod to form a first pivoting point, and the lower end of the first supporting rod is pivoted with one end of the bottom rod to form a second pivoting point; the lower end of the second supporting rod is pivoted with the upper end of the third supporting rod to form a third pivoting point; the third supporting rod is pivoted with the other end of the bottom rod to form a fourth pivoting point; one end of the connecting rod is pivoted with the front end of the seat body to form a fifth pivot point, and the other end of the connecting rod is pivoted with the middle part of the first supporting rod to form a sixth pivot point; the rear end of the seat body is pivoted with the third supporting rod to form a seventh pivoting point; the locking mechanism is arranged between the first support rod and the second support rod and can lock or unlock the first support rod and the second support rod mutually.

Compared with the prior art, the upper end of the first support rod is pivoted with the second support rod, the third support rod is pivoted with the second support rod, and the bottom rod is respectively pivoted with the first support rod and the third support rod, so that a deformable and foldable quadrilateral structure is formed among the first support rod, the second support rod, the third support rod and the bottom rod, and the support of the folding wheelchair support can be folded or unfolded. Meanwhile, the connecting rod is respectively pivoted with the first supporting rod and the seat body, and the seat body is pivoted with the third supporting rod, so that another deformable and foldable polygon is formed among the connecting rod, the seat body, the third supporting rod, the first supporting rod and the second supporting rod, and the foldable wheelchair support can be unfolded or folded. The user only needs to control the second support rod to turn relative to the first support rod after unlocking, so that the integral folding can be realized, and the folding is simple and convenient; and the folded folding wheelchair bracket is flat, the size of the folding wheelchair bracket is greatly reduced, the occupied space is small, and the folding wheelchair bracket is very convenient to carry and store. In addition, due to the fact that the locking mechanism is arranged, the first supporting rod and the second supporting rod are manually locked or unlocked through the locking mechanism, compared with the traditional folding wheelchair which is automatically folded and unfolded through the electric push rod, the folding wheelchair avoids the adoption of electric push rods and other parts with higher cost, greatly reduces the cost, and is beneficial to wide use.

Preferably, a first connecting piece is fixed at the upper end of the third supporting rod, and one end of the first connecting piece is pivoted with the lower end of the second supporting rod; the middle of the first connecting piece is of a hollow structure, so that the second supporting rod can pass through the lower end of the second supporting rod when the second supporting rod is turned over relative to the third supporting rod.

Preferably, a second connecting member is fixed to the second support rod, and the second connecting member is pivotally connected to the upper end of the first support rod.

Preferably, the second support rod is of a tubular structure, the locking mechanism is arranged inside the lower end of the second support rod, a locking seat is arranged in the middle of the first support rod, and the locking mechanism and the locking seat can be locked or unlocked.

Specifically, the locking mechanism comprises a locking pin, and when the first support rod and the second support rod are mutually extended and locked, the locking pin is inserted into the locking seat.

Specifically, the locking mechanism further comprises an elastic element having an elastic force to insert the locking pin into the locking seat. The elastic element can ensure that the folding wheelchair support can automatically keep a locking state when in an unfolding state, thereby preventing accidental folding and improving the use safety.

Specifically, the locking mechanism further comprises a positioning seat arranged in the second support rod, the locking pin is sleeved on the positioning seat in a sliding manner, the elastic element is sleeved between the positioning seat and the locking pin, and two ends of the elastic element respectively abut against the positioning seat and a flange at the front end of the locking pin. The positioning seat can guide the sliding of the locking pin and can also position the elastic element, so that the locking mechanism runs more stably and reliably.

Specifically, the folding wheelchair support further comprises a flexible operation piece, one end of the flexible operation piece is connected with the locking mechanism and drives the locking mechanism to release the lock, and the other end of the flexible operation piece extends outwards. The flexible operation piece is arranged, so that the folding wheelchair support can be unlocked more conveniently and quickly before being folded.

Preferably, the folding wheelchair support further comprises a fourth support rod and a handrail rod, wherein one end of the fourth support rod is pivoted to the first support rod to form an eighth pivot point, the other end of the fourth support rod is pivoted to the middle of the handrail rod, and the other end of the handrail rod is pivoted to the middle of the second support rod to form a ninth pivot point. Through the arrangement of the fourth supporting rod and the grab rail, the fourth supporting rod and the grab rail can be mutually folded along with the first supporting rod and the second supporting rod to be linked, so that the purpose of synchronous and automatic folding is achieved, and the convenience of folding is improved.

Preferably, the folding wheelchair support further comprises rollers, and the rollers are respectively arranged at the lower ends of the first support rod and the third support rod. The arrangement of the idler wheels can enable the folding wheelchair support to form a wheelchair, so that the wheelchair is convenient for disabled people to use.

Preferably, the foldable wheelchair support further comprises a footrest member, and the footrest member is disposed at the lower end of the first support rod and is foldable in a reversible manner. Will the footrest spare is to set up with overturning, can be when using convenient to use user to hold the foot, improves the travelling comfort of using, can fold up when not using again, reduces the volume that occupies, conveniently carries.

Specifically, the folding wheelchair support further comprises a lock release operation piece, and the lock release operation piece is arranged at the upper end of the second support rod and connected with the other end of the flexible operation piece.

Preferably, the upper section of the first support rod and the lower section of the second support rod are arranged in an overlapping manner.

Drawings

Figure 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 elevational view of the folding wheelchair of the present invention in the unfolded position.

Fig. 4 is an enlarged view of a portion a in fig. 1.

Figure 5 is a cross-sectional view of the locking mechanism of the folding wheelchair of the present invention.

FIG. 6 is a cross-sectional view of the release operating member and the second support rod of the foldable wheelchair of the present invention.

FIG. 7 is a view showing the state of the folding wheelchair with the bars in operation.

Figure 8 is a state view of the folding wheelchair of the present invention after it is folded.

Detailed Description

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

As shown in fig. 1 to 3, the folding wheelchair frame 100 of the present invention comprises a first support rod 1, a second support rod 2, a third support rod 3, a bottom rod 4, a connecting rod 5, a locking mechanism 6 and a base body 140; the first support rod 1, the second support rod 2, the third support rod 3, the bottom rod 4, the connecting rod 5 and the locking mechanism 6 are disposed on the left and right sides of the seat body 140. The upper section of the first support rod 1 and the lower section of the second support rod 2 are partially overlapped, the upper end of the first support rod 1 is pivoted with the second support rod 2 to form a first pivoting point a, and the lower end of the first support rod 1 is pivoted with one end of the bottom rod 4 to form a first pivoting point b; the first support bar 1 forms the front foot of the folding wheelchair frame 100. The lower end of the second support rod 2 is pivoted with the upper end of the third support rod 3 to form a third pivot point c; the second support bar 2 forms a backrest bar of the folding wheelchair frame 100. The middle part of the third supporting rod 3 is pivoted with the other end of the bottom rod 4 to form a fourth pivoting point d; the third support bar 3 forms the rear foot of the folding wheelchair frame 100. One end of the connecting rod 5 is pivoted with the front end of the seat body 140 to form a fifth pivot point e, and the other end of the connecting rod is pivoted with the middle part of the first supporting rod 1 to form a sixth pivot point f; the connecting rod 5 is located at the front side of the first support bar 1. The rear end of the base 140 is pivotally connected to the third support bar 3 to form a seventh pivot point g; the seventh pivot point g is located between the third pivot point c and the fourth pivot point d. The locking mechanism 6 is disposed between the first support rod 1 and the second support rod 2 and can lock or unlock the first support rod 1 and the second support rod 2 with each other.

As shown in fig. 3 and 4, a first connecting member 31 is fixed at the upper end of the third support bar 3, and one end of the first connecting member 31 is pivotally connected to the lower end of the second support bar 2; the middle of the first connecting piece 31 is of a hollow structure, so that the second supporting rod 2 can pass through the lower end of the second supporting rod 2 when being turned over relative to the third supporting rod 3. A second connecting piece 21 is fixed on the second supporting rod 2, and the second connecting piece 21 is pivoted with the upper end of the first supporting rod 1.

Referring to fig. 4 and 5, the second support rod 2 is a tubular structure, the locking mechanism 6 is disposed inside the lower end of the second support rod 2, the middle of the first support rod 1 is provided with a locking seat 11, and the locking mechanism 6 and the locking seat 7 can be locked or unlocked. The locking mechanism 6 comprises a locking pin 61, an elastic element 62 and a positioning seat 63, the locking pin 61 is slidably disposed in the second support rod 2, and when the first support rod 1 and the second support rod 2 are mutually extended and locked, the locking pin 61 is inserted into the locking seat 11. The elastic element 62 is a compression spring and has an elastic force to insert the locking pin 61 into the locking seat 11. The elastic element 62 can ensure that the folding wheelchair frame 100 can automatically keep a locking state when in an unfolding state, thereby preventing accidental folding and improving the use safety. The positioning seat 63 is disposed in the second support rod 2, the locking pin 61 is slidably sleeved on the positioning seat 63, the elastic element 62 is sleeved between the positioning seat 63 and the locking pin 61, and two ends of the elastic element respectively abut against the positioning seat 63 and a flange 61a at the front end of the locking pin 61. The positioning seat 63 is provided to guide the sliding of the locking pin 61 and also to position the elastic element 62, so that the operation of the locking mechanism 6 is more stable and reliable.

Referring to fig. 5 and 6, the foldable wheelchair frame 100 further includes a flexible operating member 7, one end of the flexible operating member 7 is connected to the locking mechanism 6 and drives the locking mechanism 6 to unlock, and the other end extends outward. The application the flexible operation member 7 is rope or copper wire. The flexible operating member 7 is connected to the locking pin 61 at one end and extends outwardly at the other end to fold the back of the wheelchair frame 100 or other easily accessible location. The flexible operation member 7 can be arranged to make the folding wheelchair support 100 more convenient and faster to unlock before folding. The folding wheelchair support 100 further comprises a lock release operation part 8, the lock release operation part 8 is arranged at the upper end of the second support rod 2, the lock release operation part 8 comprises a lock release button 81 and a fixing part 82, the fixing part 82 is fixed with the lock release button 81, the flexible operation part 7 is connected with the fixing part 82 of the lock release operation part 8, and the fixing part 82 can adjust the tension degree of the flexible operation part 7; the flexible operation member 7 can be driven by operating the release operation member 8, and the locking pin 61 is pulled to slide by the flexible operation member 7. Specifically, the lock release operation member 8 is slidably disposed at the upper end of the second support rod 2, and the sliding direction is along the length extending direction of the second support rod 2. A return spring 9 for returning the lock release operation member 8 is provided between the lock release operation member 8 and the second support bar 2. A guide wheel 22 is arranged in the upper end of the second support rod 2, and the guide wheel 22 is pivoted in a mounting seat at the upper end of the second support rod 2. The end of the flexible operation member 7 is wound around the guide wheel 22 and extends downwards to be connected with the unlocking operation member 8, so that the unlocking operation member 8 is pressed, and the flexible operation member 7 and the locking pin 61 are pulled to realize unlocking. The flexible operation member 7 may be directly connected to the release operation member 8, and the return spring 9 may be an extension spring, so that the release operation member 8 may be pulled to release the lock. Of course, the lock release operation member 8 may be set in a translational or rotational manner, so that the flexible operation member 7 is pulled, and finally the lock release purpose is achieved.

As shown in fig. 3, the foldable wheelchair frame 100 further includes a fourth support rod 10 and a handrail rod 110, wherein one end of the fourth support rod 10 is pivoted to the first support rod 1 to form an eighth pivot point h, the other end of the fourth support rod is pivoted to the middle of the handrail rod 110 to form a ninth pivot point i, and the other end of the handrail rod 110 is pivoted to the middle of the second support rod 2 to form a tenth pivot point j. The first pivot point a is located between the third pivot point c and the tenth pivot point j. The eighth pivot point h is located between the sixth pivot point f and the first pivot point a, and the sixth pivot point f is located between the second pivot point b and the eighth pivot point h. By arranging the fourth support rod 10 and the grab rail 110, the four support rods can be mutually folded along with the first support rod 1 and the second support rod 2 to be linked, so that the purpose of synchronous and automatic folding is achieved, and the convenience of folding is improved.

Referring to fig. 2 and 3, the foldable wheelchair frame 100 further includes a roller 120 and a footrest member 130, the roller 120 is respectively disposed at the lower ends of the first support rod 1 and the third support rod 3, wherein the roller 120 on the third support rod 3 is driven by a motor 150. The wheels 120 are provided to allow the folding wheelchair frame 100 to be a wheelchair for the convenience of the disabled. The footrest member 130 is disposed at the lower end of the first support rod 1 and can be folded in a reversible manner. The footrest pieces 130 are arranged in a turnover mode, so that a user can conveniently put feet when the footrest pieces are used, the use comfort is improved, the footrest pieces can be folded when not used, the occupied volume is reduced, and the footrest is convenient to carry.

With the above and with reference to fig. 7 and 8, the folding process of the foldable wheelchair of the present invention is described in detail as follows:

when folding, the footrest member 130 is first manually turned over and folded. And then the lock release operating part 8 is manually pressed to pull the flexible operating part 7, so that the locking pin 61 is withdrawn from the locking seat 7, and at this time, the first support rod 1 and the second support rod 2 can rotate mutually. Then, the upper end of the second support rod 2 is manually driven to turn over around the first pivot point a in a counterclockwise direction. At this time, the lower end of the second support rod 2 drives the third support rod 3 to swing clockwise. Meanwhile, the connecting rod 5 swings clockwise, so that the first supporting rod 1, the second supporting rod 2, the third supporting rod 3, the seat body 140 and the bottom rod 4 are drawn close to each other. Meanwhile, the fourth support rod 10 and the grab bar 110 are folded relatively along with the turning of the second support rod 2 and are drawn toward the seat body 140. Until finally, the first support rod 1, the second support rod 2, the third support rod 3, the seat body 140, the bottom rod 4, the fourth support rod 10 and the grab bar 110 are close to each other, so that the folding wheelchair is folded and is in a flat state. When the wheelchair is unfolded, the above reverse operations are only needed, and then all the rod pieces are unfolded mutually, and finally the locking pin 61 is automatically inserted into the locking seat 11 under the elastic force action of the spring element 62, so that the first supporting rod 1 and the second supporting rod are locked mutually, and then the whole folding wheelchair is locked in an unfolded state.

Compared with the prior art, the upper end of the first support rod 1 is pivoted with the second support rod 2, the third support rod 3 is pivoted with the second support rod 2, and the bottom rod 4 is respectively pivoted with the first support rod 1 and the third support rod 3, so that a deformable and foldable quadrilateral structure is formed among the first support rod 1, the second support rod 2, the third support rod 3 and the bottom rod 4, and the support of the foldable wheelchair support 100 can be folded or unfolded. Meanwhile, the connecting rod 5 is pivotally connected to the first supporting rod 1 and the seat body 140 respectively, and the seat body 140 is pivotally connected to the third supporting rod 3, so that another deformable and foldable polygon is formed among the connecting rod 5, the seat body 140, the third supporting rod 3, the first supporting rod 1 and the second supporting rod 2, thereby achieving the purpose of unfolding or folding the foldable wheelchair support 100. The user only needs to control the second support rod 2 to turn relative to the first support rod 1 after unlocking, so that the integral folding can be realized, and the folding is simple and convenient; and the folded folding wheelchair support 100 is flat, the size of the folding wheelchair support 100 is greatly reduced, the occupied space is small, and the folding wheelchair support is convenient to carry and store. In addition, due to the fact that the locking mechanism 6 is arranged, the first supporting rod 1 and the second supporting rod 2 are manually locked or unlocked through the locking mechanism 6, compared with the traditional folding wheelchair which is automatically folded and unfolded through the electric push rod, the folding wheelchair avoids the adoption of electric push rods and other parts with high cost, greatly reduces the cost, and is beneficial to wide application.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the present invention, which is therefore intended to cover all equivalent changes and modifications within the scope of the present invention.

Claims

1. A folding wheelchair support is characterized in that: comprises a first supporting rod, a second supporting rod, a third supporting rod, a bottom rod, a connecting rod, a seat body and a locking mechanism; the upper end of the first supporting rod is pivoted with the second supporting rod to form a first pivoting point, and the lower end of the first supporting rod is pivoted with one end of the bottom rod to form a second pivoting point; the lower end of the second supporting rod is pivoted with the upper end of the third supporting rod to form a third pivoting point; the third supporting rod is pivoted with the other end of the bottom rod to form a fourth pivoting point; one end of the connecting rod is pivoted with the front end of the seat body to form a fifth pivot point, and the other end of the connecting rod is pivoted with the middle part of the first supporting rod to form a sixth pivot point; the rear end of the seat body is pivoted with the third supporting rod to form a seventh pivoting point; the locking mechanism is arranged between the first support rod and the second support rod and can lock or unlock the first support rod and the second support rod mutually.

2. A folding wheelchair frame as claimed in claim 1, wherein: a first connecting piece is fixed at the upper end of the third supporting rod, and one end of the first connecting piece is pivoted with the lower end of the second supporting rod; the middle of the first connecting piece is of a hollow structure, so that the second supporting rod can pass through the lower end of the second supporting rod when the second supporting rod is turned over relative to the third supporting rod.

3. A folding wheelchair frame as claimed in claim 1, wherein: and a second connecting piece is fixed on the second supporting rod and is pivoted with the upper end of the first supporting rod.

4. A folding wheelchair frame as claimed in claim 1, wherein: the second supporting rod is of a tubular structure, the locking mechanism is arranged in the lower end of the second supporting rod, the middle of the first supporting rod is provided with a locking seat, and the locking mechanism and the locking seat can be locked or unlocked.

5. A folding wheelchair frame as claimed in claim 4, in which: the locking mechanism comprises a locking pin, and when the first supporting rod and the second supporting rod are mutually stretched and locked, the locking pin is inserted into the locking seat.

6. A folding wheelchair frame as claimed in claim 5, in which: the locking mechanism further comprises an elastic element having an elastic force to insert the locking pin into the locking seat.

7. A folding wheelchair frame as claimed in claim 6, in which: the locking mechanism further comprises a positioning seat arranged in the second supporting rod, the locking pin is sleeved on the positioning seat in a sliding mode, the elastic element is sleeved between the positioning seat and the locking pin, and two ends of the elastic element respectively abut against the positioning seat and a flange at the front end of the locking pin.

8. A folding wheelchair frame as claimed in claim 1, wherein: the folding wheelchair support further comprises a flexible operation piece, one end of the flexible operation piece is connected with the locking mechanism and drives the locking mechanism to release the lock, and the other end of the flexible operation piece extends outwards.

9. A folding wheelchair frame as claimed in claim 1, wherein: the folding wheelchair support further comprises a fourth supporting rod and a handrail rod, wherein one end of the fourth supporting rod is pivoted to form an eighth pivot point on the first supporting rod, the other end of the fourth supporting rod is pivoted to the middle of the handrail rod, and the other end of the handrail rod is pivoted to form a ninth pivot point in the middle of the second supporting rod.

10. A folding wheelchair frame as claimed in claim 1, wherein: the folding wheelchair support further comprises idler wheels, and the idler wheels are respectively arranged at the lower ends of the first supporting rod and the third supporting rod.

11. A folding wheelchair frame as claimed in claim 1, wherein: the folding wheelchair support further comprises a foot rest piece which is arranged at the lower end of the first supporting rod and can be folded in a turnover mode.

12. A folding wheelchair frame as claimed in claim 8, in which: the folding wheelchair support further comprises a lock releasing operation piece, and the lock releasing operation piece is arranged at the upper end of the second supporting rod and connected with the other end of the flexible operation piece.

13. A folding wheelchair frame as claimed in claim 1, wherein: the upper section of the first supporting rod and the lower section of the second supporting rod are arranged in an overlapping mode.