CN110787002A - Foldable wheelchair capable of turning - Google Patents

Abstract

The invention discloses a turning and foldable wheelchair, which comprises a frame, the frame includes an upper strut, and both ends of the upper strut are connected to a seat back; an upper mounting frame is installed on both sides of the seat back, and the upper mounting frame supports the seat; The turning mechanism is connected to the lower support rod of the upper support rod, and the two ends of the lower support rod are connected to the rear wheel; the lower installation frame of the lower support rod is extended and connected, and the lower installation frame is installed with the front wheel and is connected to the rear wheel through the hinge frame and connected to the upper part an installation frame; an upper armrest frame pivotally connected to the seat back; a lower armrest frame pivotally connected to the seat and movably supporting the upper armrest frame; a telescopic rod telescopically sleeved in the upper armrest frame, and the telescopic rod is installed with a control handle; Battery compartment for lower mounting frame. The invention connects the seat, the wheel and the back of the chair through the frame, and at the same time utilizes the flip mechanism and the automatic locking mechanism to fold and self-lock, so as to avoid the trouble of single function of the electric wheelchair in the past.

Description

A flip foldable wheelchair

technical field

The present application belongs to the technical field of wheelchairs, and in particular, relates to a wheelchair that is flipped and foldable.

Background technique

At present, the wheelchairs sold on the market are divided into manual wheelchairs and electric wheelchairs. Electric wheelchairs are divided into fixed or folding wheelchairs. Folding wheelchairs can be easily stored and are more and more respected by the market. However, the current folding wheelchair lacks armrests and needs to be disassembled separately when it is unfolded for use, and most of them are bolted, which is troublesome to install. In addition, there is no automatic lock when unfolding. In order to prevent the folding and deformation, the parts will be interference fit and friction will be increased, which is very troublesome to use. There is a lack of a more suitable and versatile electric motor wheelchair.

SUMMARY OF THE INVENTION

In view of this, the technical problem to be solved by this application is to provide a flip-and-foldable wheelchair, which connects the seat, the wheel and the back of the chair through a skeleton, and at the same time uses a flip mechanism and an automatic locking mechanism to fold and self-lock, so as to avoid the need for electric power in the past. The wheelchair functions a single hassle.

In order to solve the above technical problems, the present invention discloses a flip-and-foldable wheelchair, which includes a skeleton, the skeleton includes an upper strut, and both ends of the upper strut are connected to the seat back; The frame supports the seat; the lower support rod of the upper support rod is connected by the turning mechanism, and the two ends of the lower support rod are connected to the rear wheel; The chair wheel is connected to the upper mounting frame; the upper armrest frame is pivotally connected to the seat back; the lower armrest frame is pivotally connected to the seat and movably supports the upper armrest frame; control handle; and a battery compartment mounted on the lower mounting frame.

According to an embodiment of the present invention, the above-mentioned turning mechanism includes an upper pivot arm sleeved and fixed on both ends of the upper support rod, one end of the upper pivot arm is pivotally connected to the lower pivot arm sleeved on the lower support rod, and the other end is provided with an adjusting bolt to adjust the The bolt is movably pressed against the branch of the lower pivot arm, the branch is adhered to the rubber pad, the upper end of the adjusting bolt is pressed against the limit by the nut, and the lower end is sleeved with a compression spring.

According to an embodiment of the present invention, an automatic locking mechanism is further provided between the upper strut and the lower strut, and the automatic locking mechanism includes a snap block fixed at the center of the upper strut and a corresponding locking block mounted on the lower strut. a buckle seat; wherein the buckle block is pressed against the lower strut by the radian of the upper end, and has a buckle groove facing the buckle seat; the buckle seat comprises a guide column sleeve arranged at intervals on the lower strut, and the guide column sleeve has a relative chute; The pull rods are respectively penetrated through the guide column sleeve, the pull rod is located at the outer end of the guide column sleeve and is connected by a pull tab, and the inner end is connected by a buckle rod corresponding to the buckle groove; and a spring sleeved on the pull rod and located in the guide column sleeve; Pull the pull tab to drive the pull rod telescopic spring, so that the buckle rod is buckled or separated from the buckle groove; when the buckle rod is buckled with the buckle groove, the adjusting bolt is pressed against the branch of the lower pivot arm.

According to an embodiment of the present invention, the upper mounting frame has a bent portion bent from the lower side of the seat to the back side of the seat, the bent portion is connected by a cross bar, and the cross bar is pivotally connected to the seat back through a sleeve connecting piece.

According to an embodiment of the present invention, a pedal is further mounted on the front end of the lower mounting frame.

According to an embodiment of the present invention, the middle section of the upper handrail frame has a positioning column extending downward, and the side surface of the positioning column has a positioning groove; The guide column groove of the positioning column, and the side of the handle is provided with an adjusting pin for locking the positioning groove.

According to an embodiment of the present invention, the above-mentioned adjusting pin includes a disc portion exposed on the side of the handle; a paddle portion extending from the upper end of the disc portion; pin section.

According to an embodiment of the present invention, the upper end of the upper armrest frame is glued with a leather pad.

According to an embodiment of the present invention, the telescopic rod has a plurality of limit holes, and the upper armrest frame has limit pins that are snapped and inserted into the limit holes.

Compared with the prior art, the present application can obtain the following technical effects:

The seat, the wheel and the back of the chair are connected by the skeleton, and at the same time, the flip mechanism and the automatic locking mechanism are used to fold and self-lock, so as to avoid the trouble of single function of the electric wheelchair in the past.

Of course, any product implementing the present application does not necessarily need to achieve all of the above-mentioned technical effects at the same time.

Description of drawings

The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:

FIG. 1 is a perspective view of a flip-foldable wheelchair according to an embodiment of the present application;

Fig. 2 is the installation schematic diagram of the turning mechanism of the embodiment of the present application;

3 is a schematic diagram of an automatic locking mechanism according to an embodiment of the present application;

4 is a schematic diagram of the installation of the upper armrest frame and the lower armrest frame according to the embodiment of the present application;

FIG. 5 is a schematic view of the separation of FIG. 4 .

reference number

Frame 10, upper strut 11, upper mounting frame 12, lower strut 13, lower mounting frame 14, hinge frame 15, bending portion 16, cross bar 17, connecting piece 18, seat back 20, seat 30, flip mechanism 40, upper pivot arm 41, lower pivot arm 42, adjusting bolt 43, support 44, compression spring 45, rear wheel 51, front wheel 52, upper armrest 60, positioning post 61, positioning groove 62, lower armrest 70, handle 71, guide column groove 72, adjusting pin 73, disc part 74, paddle part 75, pin column part 76, telescopic rod 80, control handle 81, battery box 82, pedal 83, limit pin 84 , Automatic locking mechanism 90, buckle block 91, buckle seat 92, buckle groove 93, guide column sleeve 94, chute 95, pull rod 96, pull tab 97, buckle rod 98.

Detailed ways

The embodiments of the present application will be described in detail below with reference to the accompanying drawings and examples, so as to fully understand and implement the implementation process of how to apply technical means to solve technical problems and achieve technical effects in the present application.

Please refer to FIG. 1 . FIG. 1 is a perspective view of a flip-and-foldable wheelchair according to an embodiment of the present application. As shown in the figure, a flip-foldable wheelchair includes a frame 10, the frame 10 includes an upper strut 11, and both ends of the upper strut 11 are connected to the seat back 20; The frame 12 supports the seat 30; the lower stay 13 of the upper stay 11 is connected to the lower stay 11 through the turning mechanism 40, and the two ends of the lower stay 13 are connected to the rear wheel 51; Install the front wheel 52 and connect the rear wheel 51 through the hinge frame 15 and connect to the upper mounting frame 12; pivot to the upper armrest frame 60 of the seat back 20; pivot to the seat 30 and movably support the lower armrest frame 60 The armrest frame 70 ; the telescopic rod 80 telescopically sleeved in the upper armrest frame 60 , the telescopic rod 80 is mounted with the control handle 81 ; and the battery box 82 mounted on the lower mounting frame 14 .

In an embodiment of the present invention, the frame 10 constitutes an integral support of the wheelchair, the seat back 20 is connected and fixed through the upper strut 11, and the upper mounting frame 12 supporting the seat 30 is installed on both sides of the seat back 20, and the lower strut 13 is connected to the rear wheel 51, and the lower mounting frame 14 is laterally extended for installation and connection to the front wheel 52, and then connected to the rear wheel 51 through the hinge frame 15, and finally connected to the upper mounting frame 12 to complete the overall fixing, The frame 10 is formed to complete the stable support.

In addition, an upper armrest frame 60 is also pivotally connected to both sides of the seat back 20 , and cooperates with the lower armrest frame 70 pivotally connected to the seat 30 to form an integral armrest, which is convenient for users to use. A telescopic rod 80 is passed through the inner side of the upper armrest frame 60, and a control handle 81 is installed at the end thereof. Preferably, the telescopic rod 80 has a plurality of limit holes, and the upper armrest frame 60 has limit pins 84 that are snapped and inserted into the limit holes. Through telescopic adjustment, it is more flexible to adapt to different user experiences. In addition, a battery box 82 for storing batteries is also installed on the lower installation frame 14 to realize electric control.

Please refer to FIG. 2 , which is a schematic diagram of the installation of the turning mechanism according to the embodiment of the present application. The turning mechanism 40 includes an upper pivot arm 41 sleeved and fixed on both ends of the upper support rod 11 , one end of the upper pivot arm 41 is pivotally sleeved with the lower pivot arm 42 of the lower support rod 13 , and the other end is provided with an adjustment bolt 43 , and the adjustment bolt 43 The support portion 44 of the lower pivot arm 42 is movably pressed against the support portion 44, the support portion 44 is adhered to the rubber pad, the upper end of the adjusting bolt 43 is pressed against the limit by the nut, and the lower end is sleeved with a compression spring 45. In this embodiment, the upper support rod 11 is pivotally connected to the lower pivot arm 42 sleeved on the lower support rod 13 through the sleeved upper pivot arm 41 , and at the same time, the other end of the relative pivot joint is abutted with the adjusting bolt 43 . Specifically, the adjusting bolt 43 is mounted on the upper pivot arm 41, the lower end is sleeved with a compression spring 45, and the upper end is limited by a nut, which can be compressed against the lower pivot arm 42, and can form the effect of buffering and shock absorption when the wheelchair is opened. . Preferably, the upper pivot arm 41 is bent and pivoted to the lower pivot arm 42 with a bending angle to form a certain telescopic stroke of the adjusting bolt 43 .

Please refer to FIG. 3 , which is a schematic diagram of an automatic locking mechanism according to an embodiment of the present application. An automatic locking mechanism 90 is also provided between the upper strut 11 and the lower strut 13. The automatic locking mechanism 90 includes a buckle block 91 fixed in the center of the upper strut 11 and a corresponding buckle mounted on the lower strut 13. Block 92.

In an embodiment of the present invention, when the automatic locking mechanism 90 rotates the upper strut 11 and the lower strut 13, the buckling block 91 and the buckling seat 92 can be separated and folded along with the overall folding and rotation, and also It can buckle and open the wheelchair, and realize the automatic locking and positioning function.

Specifically, the buckle block 91 is pressed against the lower strut 13 by the radian of the upper end, and has a buckle groove 93 facing the buckle seat 92; 94 has opposite sliding grooves 95; pull rods 96 are respectively passed through the guide column sleeve 94, the pull rod 96 is located at the outer end of the guide column sleeve 94 and is connected by a pull tab 97, and the inner end is connected by a buckle rod 98 corresponding to the buckle groove 93; and A spring sleeved on the pull rod 96 and located in the guide column sleeve 94; wherein by pulling the pull tab 97, the pull rod 96 is driven to expand and contract the spring, so that the buckle rod 98 is buckled or separated from the buckle groove 93; when the buckle rod 98 buckles the buckle groove 93 , the adjusting bolt 43 is pressed against the branch 44 of the lower pivot arm 42 .

The upper mounting frame 12 has a bent portion 16 that is bent from the lower side of the seat 30 to the rear side of the seat back 20 . The bent portion 16 is connected by a cross bar 17 , and the cross bar 17 is pivotally connected to the seat back 20 through a sleeve connecting piece 18 . . When the seat 30 is turned over, it can be rotated through the connecting piece 18, and can also be supported by the bending portion 16 when it is opened, which is stable and reliable.

A pedal 83 is also installed on the front end of the lower installation frame 14, which is convenient for users to pedal.

Next, please refer to FIG. 4 and FIG. 5 together. FIG. 4 is a schematic view of the installation of the upper armrest frame and the lower armrest frame according to the embodiment of the present application; FIG. 5 is a schematic diagram of separation of FIG. 4 . The middle section of the upper armrest frame 60 has a positioning column 61 extending downward, and the side of the positioning column 61 is provided with a positioning groove 62; the front end of the lower armrest frame 70 has a handle 71 that supports the upper armrest frame 60, and the handle 71 is hollow and has an insertion setting The guide post groove 72 of the position post 61 is provided, and the side of the handle 71 has an adjusting pin 73 for locking the positioning groove 62 movably.

In this embodiment, the middle section of the upper armrest frame 60 has a positioning column 61 extending downward, the corresponding handle 71 has a guide column groove 72 for inserting the positioning column 61, and the interior is hollow at the same time, and the side of the positioning column 61 has The positioning groove 62 is recessed, and the side of the handle 71 has an adjusting pin 73 inserted into it, which can movably lock the positioning post 61 to achieve fixation and separation, facilitate extraction, disassembly and folding, and improve the convenience of use.

The adjusting pin 73 includes a disc portion 74 exposed on the side of the handle 71 ; a paddle portion 75 extending from the upper end of the disc portion 74 ; Section 76. By rotating the paddle portion 75, the disc portion 74 drives the pin portion 76 to rotate eccentrically, abuts or separates the positioning groove 62, locks or opens the pin portion 76, and realizes the separation of the upper armrest frame 60 and the lower armrest frame 70. Folding, the portability is greatly improved.

It is worth mentioning that the upper end of the upper armrest frame 70 is glued with a leather pad, which is comfortable to use. In addition, the upper end of the handle 71 has an arc, and the arc surface cooperates with the upper armrest frame 60, so that the transition is smooth and the stability is better.

The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various various other combinations, modifications and environments, and can be modified within the scope of the concept of the application described herein, using the above teachings or skill or knowledge in the relevant field. However, modifications and changes made by those skilled in the art do not depart from the spirit and scope of the present application, and should all fall within the protection scope of the appended claims of the present application.

Claims (9)

1. A reversible and collapsible wheelchair comprising:

the chair comprises a framework, a chair body and a chair back, wherein the framework comprises an upper support rod, and two ends of the upper support rod are connected with the chair back; the upper mounting frames are mounted on two sides of the chair back and support the chair seat; a lower support rod connected with the upper support rod through a turnover mechanism, wherein two ends of the lower support rod are connected with a rear chair wheel; the lower mounting frame is connected with the lower support rod in an extending mode, a front chair wheel is mounted on the lower mounting frame, and the lower mounting frame is connected with the rear chair wheel through a hinge frame and is connected to the upper mounting frame;

an upper armrest frame pivoted to the chair back;

a lower armrest frame pivoted to the seat and movably supporting the upper armrest frame;

the telescopic rod is sleeved in the upper armrest frame in a telescopic manner and is provided with a control handle; and

and the battery box is arranged on the lower mounting frame.

2. The wheelchair of claim 1, wherein the turnover mechanism comprises an upper pivot arm fixed to two ends of the upper stay, one end of the upper pivot arm is pivotally connected to the lower pivot arm of the lower stay, the other end of the upper pivot arm is provided with an adjusting bolt, the adjusting bolt is movably pressed against a support part of the lower pivot arm, the support part is adhered with a rubber pad, the upper end of the adjusting bolt is limited and pressed against by a nut, and the lower end of the adjusting bolt is sleeved with a compression spring.

3. The wheelchair of claim 1 wherein an automatic locking mechanism is disposed between the upper and lower struts, the automatic locking mechanism comprising a locking block fixed at the center of the upper strut and a corresponding locking seat mounted on the lower strut; the buckling block is pressed against the lower support rod by the radian of the upper end and is provided with a buckling groove facing the buckling seat; the buckling seat comprises guide post sleeves arranged on the lower support rod at intervals, and the guide post sleeves are provided with opposite sliding grooves; pull rods respectively penetrating through the guide post sleeves, wherein the outer ends of the pull rods positioned on the guide post sleeves are connected through pull pieces, and the inner ends of the pull rods are connected through buckling rods corresponding to the buckling grooves; the spring is sleeved on the pull rod and positioned in the guide post sleeve; the pull piece is pulled to drive the pull rod to stretch the spring, so that the buckling rod is buckled with or separated from the buckling groove; when the buckling rod is buckled with the buckling groove, the adjusting bolt presses against the supporting part of the lower pivot arm.

4. The wheelchair of claim 1 wherein the upper frame has a bent portion that is bent from the underside of the seat to the rear of the seat, the bent portion being connected by a cross bar that is pivotally connected to the back by a sleeved connection.

5. The reversible and collapsible wheelchair as claimed in claim 1, wherein said lower mounting frame is further provided at a front end thereof with a pedal.

6. The reversible and foldable wheelchair as claimed in claim 1, wherein the middle section of the upper armrest frame has a positioning column extending downwards, and the side of the positioning column has a positioning groove; the front end of the lower armrest frame is provided with a support handle which supports the upper armrest frame, the support handle is hollow and is provided with a guide column groove in which the positioning column is inserted, and the side surface of the support handle is provided with an adjusting rotating pin for movably locking the positioning groove.

7. The reversible and collapsible wheelchair as claimed in claim 6, wherein said adjustment pivot pin comprises a disk portion exposed at a side of said holder; a dial part extending to the upper end of the disc part; and a pin column part eccentrically arranged on the disc part and capable of being embedded in the positioning groove.

8. The wheelchair of claim 6 wherein the upper frame is glued to the skin pad.

9. The wheelchair of claim 1 wherein the extendable rod has a plurality of limiting holes, and the upper armrest frame has a limiting pin inserted into the limiting holes.

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