CN110755215A - Folding Wheelchair Stand - Google Patents

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 Stand

technical field

The invention relates to a folding wheelchair bracket, in particular to a folding wheelchair bracket which is simple and convenient to fold, small in volume after folding, convenient to carry and store, and low in cost.

Background technique

Existing wheelchairs are generally in a non-foldable form, with a large volume and occupy a large storage space when not in use, making it inconvenient to carry and store. Therefore, it is usually folded to reduce its volume to facilitate storage and portability. However, the existing folding wheelchairs can be folded in two ways, one is manual folding and the other is automatic folding. Manual folding involves many folding movements and is inconvenient to operate. For some people with limited mobility or older people, it takes a lot of effort; although automatic folding is easy to operate, the folding structure is complex, high cost and expensive, and it is not suitable for disabled people. Economic pressure is great for people.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a folding wheelchair bracket that is simple and convenient to fold, small in volume after folded, convenient to carry and store, and low in cost.

In order to achieve the above purpose, the folding wheelchair bracket provided by the present invention includes a first support rod, a second support rod, a third support rod, a bottom rod, a connecting rod, a seat and a locking mechanism; the upper end of the first support rod is connected to the The second support rod is pivotally connected to form a first pivot point, the lower end of the first support rod is pivotally connected to one end of the bottom rod to form a second pivot point; the lower end of the second support rod is connected to the third support rod The upper end of the rod is pivotally connected to form a third pivot point; the third support rod is pivotally connected to the other end of the bottom rod to form a fourth pivot point; one end of the connecting rod is pivotally connected to the front end of the seat to form a third pivot point. Five pivot points, the other end is pivotally connected with the middle of the first support rod to form a sixth pivot point; the rear end of the seat is pivoted with the third support rod to form a seventh pivot point; the locking mechanism is provided Between the first support rod and the second support rod, the first support rod and the second support rod can be mutually locked or unlocked.

Compared with the prior art, because the present invention pivotally connects the upper end of the first support rod to the second support rod, and pivotally connects the third support rod to the second support rod, the The bottom rod is pivotally connected with the first support rod and the third support rod, so that a deformable and foldable structure is formed between the first support rod, the second support rod, the third support rod and the bottom rod. Quadrilateral structure, so that the bracket of the folding wheelchair bracket can be folded or unfolded. At the same time, the connecting rod is pivotally connected to the first support rod and the base, and the base is pivotally connected to the third support rod, so that the connecting rod, the base, the first support Another deformable and collapsible polygon is formed between the three support rods, the first support rod and the second support rod, so that the folding wheelchair support can be expanded or collapsed. The user only needs to control the second support rod to flip relative to the first support rod after unlocking to realize the overall folding, and the folding is simple and convenient; The volume of the folding wheelchair bracket takes up little space, and it is very convenient to carry and store. In addition, because the locking mechanism is provided, the first support rod and the second support rod can be manually locked or manually unlocked by the locking mechanism, which is compared with the automatic folding and unfolding of the traditional folding wheelchair using the electric push rod. , to avoid the use of high-cost components such as electric push rods, and the cost is greatly reduced, which is conducive to widespread use.

Preferably, a first connecting piece is fixed on the upper end of the third support rod, and one end of the first connecting piece is pivotally connected with the lower end of the second support rod; the middle of the first connecting piece is a hollow structure, When the second support rod is folded relative to the third support rod, the lower end of the second support rod can pass through.

Preferably, a second connecting piece is fixed on the second support rod, and the second connecting piece is pivotally connected with the upper end of the first support rod.

Preferably, the second support rod has a tubular structure, the locking mechanism is built in the lower end of the second support rod, the middle of the first support rod is provided with a locking seat, and the locking mechanism and the The locking seat can be locked or unlocked.

Specifically, the locking mechanism includes 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 includes 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 bracket is automatically kept in a locked state when it is unfolded, so as to prevent accidental folding and improve the safety of use.

Specifically, the locking mechanism further includes a positioning seat built into the second support rod, the locking pin is slidably sleeved on the positioning seat, and the elastic element is sleeved on the positioning seat and the locking seat The two ends of the pins are respectively abutted against the positioning seat and the flange at the front end of the locking pin. The positioning seat can not only guide the sliding of the locking pin, but also position the elastic element, so that the locking mechanism can operate more stably and reliably.

Specifically, the folding wheelchair support further includes a flexible operating member, one end of the flexible operating member is connected to the locking mechanism and drives the locking mechanism to release, and the other end extends outward. Providing the flexible operating member can make the folding wheelchair bracket more convenient and quicker to release before being folded.

Preferably, the folding wheelchair bracket further includes a fourth support rod and a handrail, one end of the fourth support rod is pivotally connected to the first support rod to form an eighth pivot point, and the other end is connected to the handrail. The middle part of the handrail is pivotally connected, and the other end of the handrail is pivotally connected to the middle part of the second support rod to form a ninth pivot point. By arranging the fourth support rod and the handrail rod, they can be linked together with the mutual folding of the first support rod and the second support rod, thereby achieving the purpose of synchronous automatic folding and improving the convenience of folding.

Preferably, the foldable wheelchair support further includes rollers, and the rollers are respectively disposed on the lower ends of the first support rod and the third support rod. The provision of the rollers can make the folding wheelchair support form a wheelchair, so as to be convenient for the disabled.

Preferably, the foldable wheelchair support further includes a footrest, which is disposed at the lower end of the first support rod and can be folded over and over. The footrests are arranged in a reversed manner, which not only facilitates the user to place their feet during use, improves the comfort of use, but also can be folded up when not in use, reducing the occupied volume and being convenient to carry.

Specifically, the folding wheelchair support further includes a release operating member, which is disposed on the upper end of the second support rod and connected with the other end of the flexible operating member.

Preferably, the upper section of the first support rod and the lower section of the second support rod are arranged to overlap.

Description of drawings

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

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

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

FIG. 4 is an enlarged view of part A in FIG. 1 .

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

6 is a cross-sectional view of the unlocking operating member and the second support rod in the folding wheelchair of the present invention.

Fig. 7 is a state diagram of the action of each rod when the folding wheelchair of the present invention is folded.

Fig. 8 is a state diagram of the folding wheelchair of the present invention after being folded.

Detailed ways

In order to describe in detail the technical content, structural features, and achieved effects of the present invention, detailed descriptions are given below with reference to the embodiments and the accompanying drawings.

As shown in FIGS. 1 to 3 , the folding wheelchair support 100 of the present invention includes 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 seat 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 arranged 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, and the upper end of the first support rod 1 is pivotally connected with the second support rod 2 to form a first pivot point a , the lower end of the first support rod 1 is pivotally connected with one end of the bottom rod 4 to form a first pivot point b; the first support rod 1 forms the front foot of the folding wheelchair bracket 100 . The lower end of the second support rod 2 is pivotally connected with the upper end of the third support rod 3 to form a third pivot point c; the second support rod 2 forms the backrest rod of the folding wheelchair bracket 100 . The middle part of the third support rod 3 is pivotally connected with the other end of the bottom rod 4 to form a fourth pivot point d; the third support rod 3 forms the rear foot of the folding wheelchair bracket 100 . One end of the connecting rod 5 is pivotally connected to the front end of the base body 140 to form a fifth pivot point e, and the other end is pivotally connected to the middle of the first support rod 1 to form a sixth pivot point f; the connecting rod 5 Located on the front side of the first support rod 1 . The rear end of the seat body 140 is pivotally connected with the third support rod 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 from each other.

3 and 4 again, the upper end of the third support rod 3 is fixed with a first connecting piece 31, and one end of the first connecting piece 31 is pivotally connected to the lower end of the second support rod 2; The middle of the first connecting member 31 is a hollow structure, so that the lower end of the second supporting rod 2 can pass through when the second supporting rod 2 is folded relative to the third supporting rod 3 . A second connecting piece 21 is fixed on the second support rod 2 , and the second connecting piece 21 is pivotally connected with the upper end of the first support rod 1 .

Please refer to FIG. 4 and FIG. 5 , the second support rod 2 has a tubular structure, the locking mechanism 6 is built in the lower end of the second support rod 2 , and the middle of the first support rod 1 is provided with a locking seat 11. The locking mechanism 6 and the locking seat 7 can be locked or unlocked. The locking mechanism 6 includes 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 the first support rod 1 and the second support rod 2 are mutually When 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 allow the locking pin 61 to be inserted into the locking seat 11 . The elastic element 62 can ensure that the folding wheelchair support 100 is automatically kept in a locked state when it is unfolded, so as to prevent accidental folding and improve the safety of use. The positioning seat 63 is built in the second support rod 2 , the locking pin 61 is slidably sleeved on the positioning seat 63 , and the elastic element 62 is sleeved on the positioning seat 63 and the locking pin 61 The locating seat 63 and the flange 61 a at the front end of the locking pin 61 are respectively abutted therebetween and at both ends. The positioning seat 63 can not only guide the sliding of the locking pin 61 but also position the elastic element 62 , so that the locking mechanism 6 can operate more stably and reliably.

Please refer to FIG. 5 and FIG. 6 again, the folding wheelchair support 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 release, and the other end is connected to the locking mechanism 6 to release the lock. Extend outward. The flexible operating member 7 of the present application is a rope or a steel wire. One end of the flexible operating member 7 is connected to the locking pin 61 , and the other end extends outward, and can extend to the back of the folding wheelchair support 100 or other positions that are easy to operate. Providing the flexible operating member 7 can make the folding wheelchair support 100 more convenient and quicker to release before being folded. The folding wheelchair support 100 further includes a release operating member 8 , which is disposed on the upper end of the second support rod 2 , and includes a release button 81 and a fixing member 82 . The fixing member 82 is fixed with the release button 81 , the flexible operating member 7 is connected with the fixing member 82 of the unlocking operating member 8 , and the fixing member 82 can adjust the tension of the flexible operating member 7 degree; operating the unlocking operating member 8 can drive the flexible operating member 7, and then pull the locking pin 61 through the flexible operating member 7 to slide. Specifically, the unlocking operation member 8 is slidably disposed on the upper end of the second support rod 2 , and the sliding direction is along the lengthwise extending direction of the second support rod 2 . A return spring 9 for restoring the unlocking operation member 8 is provided between the unlocking operation member 8 and the second support rod 2 . The upper end of the second support rod 2 is provided with a guide wheel 22 , and the guide wheel 22 is pivotally connected to the mounting seat on the upper end of the second support rod 2 . The end of the flexible operating member 7 is wound around the guide wheel 22 to extend downward and is connected to the unlocking operating member 8 . Therefore, the unlocking operating member 8 is pressed to pull the flexible operating member. 7 and the locking pin 61 to release the lock. The flexible operating member 7 can also be directly connected to the unlocking operating member 8, and the return spring 9 can be set as a tension spring, so that the unlocking can be achieved by pulling the unlocking operating member 8. Of course, the unlocking operation member 8 can also be set in the form of translation or rotation, so that it pulls the flexible operation member 7 to finally achieve the purpose of unlocking.

As shown in FIG. 3 , the folding wheelchair support 100 further includes a fourth support rod 10 and a handrail 110 . One end of the fourth support rod 10 is pivotally connected to the first support rod 1 to form an eighth pivot point h, the other end is pivotally connected to the middle of the handle bar 110 to form a ninth pivot point i, and the other end of the handle bar 110 is pivotally connected to the middle of the second support bar 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 handrail rod 110, they can be linked together with the mutual folding of the first support rod 1 and the second support rod 2, thereby achieving the purpose of synchronous automatic folding and improving the convenience of folding sex.

Please refer to FIG. 2 and FIG. 3 again, the folding wheelchair support 100 further includes a roller 120 and a footrest 130, the roller 120 is respectively disposed at the lower end of the first support rod 1 and the third support rod 3, wherein the The roller 120 on the third support rod 3 is driven by the motor 150 . The provision of the rollers 120 can make the folding wheelchair support 100 a wheelchair, so as to be convenient for the disabled. The footrest 130 is disposed at the lower end of the first support rod 1 and can be folded in a turnable manner. The footrests 130 are arranged in a reversed manner, which not only facilitates the user to place their feet when in use, and improves the comfort of use, but also can be folded up when not in use to reduce the occupied volume and facilitate portability.

7 and 8, the folding process of the folding wheelchair of the present invention is described in detail as follows:

When folded, the footrest 130 is manually turned over and folded. Then manually press the release operating member 8 to pull the flexible operating member 7 so that the locking pin 61 withdraws from the locking seat 7. At this time, the first support rod 1 and the second support The rods 2 can rotate with each other. Then, manually drive the upper end of the second support rod 2 to turn counterclockwise around the first pivot point a. At this time, the lower end of the second support rod 2 drives the third support rod 3 to swing clockwise. At the same time, the connecting rod 5 swings clockwise, so that the first support rod 1 , the second support rod 2 , the third support rod 3 , the seat body 140 and the bottom rod 4 are close to each other. At the same time, the fourth support bar 10 and the handle bar 110 are folded relative to each other with the turning of the second support bar 2 , and move closer to the seat body 140 . Until the end, 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 handrail rod 110 move closer to each other to realize the folding The wheelchair is folded and flat. When opening, it is only necessary to perform the above-mentioned reverse operation, and then expand each rod to each other, and finally the locking pin 61 is automatically inserted into the locking seat 11 under the elastic force of the spring element 62, so that the first support rod 1 It is only necessary to lock with the second locking rod, so that the entire folding wheelchair can be locked in the unfolded state.

Compared with the prior art, because the present invention connects the upper end of the first support rod 1 and the second support rod 2 pivotally, the third support rod 3 and the second support rod 2 are connected together. Pivoting, the bottom rod 4 is pivotally connected with the first support rod 1 and the third support rod 3, so that the first support rod 1, the second support rod 2, the third support rod 3 and the bottom A deformable and foldable quadrilateral structure is formed between the rods 4, so that the frame of the folding wheelchair frame 100 can be folded or unfolded. At the same time, the connecting rod 5 is pivotally connected to the first support rod 1 and the base body 140, and the base body 140 is pivotally connected to the third support rod 3, so that the connecting rod 5. Another deformable and foldable polygon is formed between the seat body 140 , the third support rod 3 , the first support rod 1 and the second support rod 2 , so that the folding wheelchair bracket 100 can be unfolded or folded. Purpose. The user only needs to control the second support rod 2 to flip relative to the first support rod 1 after unlocking to realize the overall folding, and the folding is simple and convenient; and the folded folding wheelchair bracket 100 is flat and extremely The greatly reduced size of the folding wheelchair support 100 takes up little space, and is very convenient to carry and store. In addition, because the locking mechanism 6 is provided, the first support rod 1 and the second support rod 2 can be manually locked or manually unlocked by the locking mechanism 6, which is different from the traditional folding wheelchair which uses an electric push rod to realize automatic folding. Compared with the deployment, avoiding the use of high-cost components such as electric push rods, the cost is greatly reduced, which is conducive to widespread use.

The above disclosures are only preferred examples of the present invention, and of course, the scope of the rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the scope of the patent application of the present invention still belong to the scope covered by the present invention.

Claims (13)

1. A folding wheelchair bracket, characterized in that: it comprises a first support rod, a second support rod, a third support rod, a bottom rod, a connecting rod, a seat and a locking mechanism; the upper end of the first support rod is connected to the The second support rod is pivotally connected to form a first pivot point, the lower end of the first support rod is pivotally connected to one end of the bottom rod to form a second pivot point; the lower end of the second support rod is connected to the third support rod The upper end of the rod is pivotally connected to form a third pivot point; the third support rod is pivotally connected to the other end of the bottom rod to form a fourth pivot point; one end of the connecting rod is pivotally connected to the front end of the seat to form a third pivot point. Five pivot points, the other end is pivotally connected with the middle of the first support rod to form a sixth pivot point; the rear end of the seat is pivoted with the third support rod to form a seventh pivot point; the locking mechanism is provided Between the first support rod and the second support rod, the first support rod and the second support rod can be mutually locked or unlocked. 2 . The folding wheelchair bracket according to claim 1 , wherein a first connecting piece is fixed on the upper end of the third support rod, and one end of the first connecting piece pivots with the lower end of the second support rod. 3 . The middle of the first connecting piece is a hollow structure, so as to allow the lower end of the second support rod to pass through when the second support rod is folded relative to the third support rod. 3 . The folding wheelchair support according to claim 1 , wherein a second connecting member is fixed on the second support rod, and the second connecting member is pivotally connected with the upper end of the first support rod. 4 . 4 . The folding wheelchair bracket according to claim 1 , wherein the second support rod is in a tubular structure, the locking mechanism is built in the lower end of the second support rod, and the first support rod is folded. 5 . The middle part is provided with a locking seat, and the locking mechanism and the locking seat can be locked or released. 5 . The folding wheelchair support according to claim 4 , wherein 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 inside the lock seat. 6. The folding wheelchair support of claim 5, wherein the locking mechanism further comprises an elastic element having an elastic force to insert the locking pin into the locking seat. 7 . The folding wheelchair support according to claim 6 , wherein the locking mechanism further comprises a positioning seat built into the second support rod, and the locking pin is slidably sleeved on the positioning seat, 8 . The elastic element is sleeved between the positioning seat and the locking pin, and two ends of the elastic element are respectively abutted against the positioning seat and the flange at the front end of the locking pin. 8 . The folding wheelchair support according to claim 1 , wherein the folding wheelchair support further comprises a flexible operating member, and one end of the flexible operating member is connected to the locking mechanism and drives the locking mechanism to unlock. 9 . , and the other end extends outward. 9 . The folding wheelchair bracket according to claim 1 , wherein the folding wheelchair bracket further comprises a fourth support rod and a handrail, and one end of the fourth support rod is pivotally connected to the first support rod. 10 . An eighth pivot point is formed, the other end is pivotally connected to the middle of the handrail, and the other end of the handrail is pivoted to the middle of the second support rod to form a ninth pivot. 10 . The folding wheelchair support according to claim 1 , wherein the folding wheelchair support further comprises rollers, and the rollers are respectively disposed on the lower ends of the first support rod and the third support rod. 11 . 11 . The folding wheelchair support according to claim 1 , wherein the folding wheelchair support further comprises a footrest member, and the footrest member is disposed at the lower end of the first support rod and can be folded in a turnable manner. 12 . 12. The foldable wheelchair bracket according to claim 8, wherein the foldable wheelchair bracket further comprises a release operation member, the release operation member is disposed on the upper end of the second support rod and is connected with the flexible The other end of the operating piece is connected. 13 . The folding wheelchair bracket of claim 1 , wherein the upper section of the first support rod and the lower section of the second support rod are arranged to overlap. 14 .

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