CN211244156U

CN211244156U - Foldable wheelchair

Info

Publication number: CN211244156U
Application number: CN201921974584.7U
Authority: CN
Inventors: 樊锁庆; 李洪炳
Original assignee: Danyang Kangbao Medical Technology Co ltd
Current assignee: Danyang Kangbao Medical Technology Co ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-08-14
Anticipated expiration: 2029-11-15

Abstract

The utility model discloses a foldable wheelchair, which comprises a framework, wherein the framework comprises an upper stay bar, and the two ends of the upper stay bar are connected with a 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, and two ends of the lower support rod are connected with the rear chair wheel; the lower mounting frame is connected with the lower support rod in an extending way, the lower mounting frame is provided with a front chair wheel and is connected with a rear chair wheel through a hinge frame and is connected with the upper mounting frame; an upper armrest frame pivoted on 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 way and is provided with a control handle; and a battery case mounted on the lower mounting frame. The utility model discloses a skeleton links up seat support, chair wheel and the back of the chair, utilizes tilting mechanism, the folding auto-lock of automatic latch mechanism simultaneously, avoids the trouble of electronic wheelchair function singleness in the past.

Description

Foldable wheelchair

Technical Field

The application belongs to the technical field of wheelchairs, and particularly relates to a foldable wheelchair.

Background

Wheelchairs sold in the current market are divided into manual wheelchairs and electric wheelchairs, the electric wheelchairs are also divided into fixed or folding wheelchairs, and the folding wheelchairs can be conveniently stored and are increasingly popular in the market. However, the existing folding wheelchair is lack of armrests and needs to be additionally detached when being unfolded for use, and is mostly fastened by bolts, so that the installation is troublesome. In addition, the electric wheelchair is lack of an automatic lock catch when being unfolded for use, and in order to prevent the folding and the recovery from deformation, the parts are in interference fit during design, the friction is increased, the use is very troublesome, and the electric wheelchair which is more applicable and has multiple functions is lacked.

SUMMERY OF THE UTILITY MODEL

In view of this, the technical problem to be solved in the present application is to provide a foldable wheelchair, which connects a seat, a wheel and a backrest through a frame, and simultaneously utilizes a turnover mechanism and an automatic locking mechanism to fold and self-lock, thereby avoiding the trouble of single function of the conventional electric wheelchair.

In order to solve the technical problem, the utility model discloses a foldable wheelchair, which comprises a framework, wherein the framework comprises an upper stay bar, and two ends of the upper stay bar are connected with a 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, and two ends of the lower support rod are connected with the rear chair wheel; the lower mounting frame is connected with the lower support rod in an extending way, the lower mounting frame is provided with a front chair wheel and is connected with a rear chair wheel through a hinge frame and is connected with the upper mounting frame; an upper armrest frame pivoted on 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 way and is provided with a control handle; and a battery case mounted on the lower mounting frame.

According to the utility model relates to an embodiment, wherein above-mentioned tilting mechanism establishes the last pivot arm that is fixed in the vaulting pole both ends including the cover, goes up the lower pivot arm of lower vaulting pole is located to pivot arm one end pin joint cover, and adjusting bolt is worn to establish by the other end, and adjusting bolt activity pressure supports in the portion of propping of pivot arm down, and a portion adhesion rubber pad, adjusting bolt upper end are spacing to press through the nut, and compression spring is established to the lower pot head.

According to an embodiment of the present invention, an automatic locking mechanism is further disposed between the upper brace and the lower brace, and the automatic locking mechanism includes a locking block fixed at the center of the upper brace and a corresponding locking seat mounted on the lower brace; wherein the buckling block is pressed against the lower stay bar 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 supporting rods at intervals, and the guide post sleeves are provided with opposite sliding grooves; the pull rods are respectively arranged in the guide post sleeves in a penetrating way, the outer ends of the pull rods positioned in 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; and a spring sleeved on the pull rod and positioned in the guide post sleeve; wherein, the pull piece is pulled to drive the pull rod expansion 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 is pressed against the support part of the lower pivot arm.

According to the utility model discloses an embodiment, wherein above-mentioned upper portion installing frame has by the seat support downside kink to the kink of chair back rear side, and the kink is connected by the horizontal pole, and the horizontal pole connects to the back of the chair through cup jointing the connecting piece pivot.

According to the utility model discloses an embodiment, wherein the footboard is still installed to above-mentioned lower part installing frame front end.

According to an embodiment of the present invention, the middle section of the upper armrest frame has a positioning column extending downward, and a positioning groove is formed on a side surface of the positioning column; 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 a positioning column is inserted, and the side surface of the support handle is provided with an adjusting rotating pin of a movable locking positioning groove.

According to an embodiment of the present invention, the adjusting pin includes a disk exposed to a side of the holder; a dial part extending to the upper end of the disc part; and a pin column part eccentrically arranged on the disk part and capable of being embedded in the positioning groove.

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

According to the utility model discloses an embodiment, wherein above-mentioned telescopic link has a plurality of spacing holes, goes up the handrail frame and has the buckle to insert the spacer pin of establishing into spacing hole.

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

the seat, the chair wheel and the chair back are connected through the framework, and the turnover mechanism and the automatic locking mechanism are used for folding and self-locking, so that the trouble that the conventional electric wheelchair is single in function is avoided.

Of course, it is not necessary for any one product to achieve all of the above-described technical effects simultaneously.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a perspective view of a collapsible wheelchair in accordance with an embodiment of the present application;

FIG. 2 is a schematic view of the installation of the turnover mechanism of the embodiment of the present application;

FIG. 3 is a schematic view of an automatic latching mechanism according to an embodiment of the present application;

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

Reference numerals

The chair comprises a framework 10, an upper support rod 11, an upper mounting frame 12, a lower support rod 13, a lower mounting frame 14, a hinge frame 15, a bent part 16, a cross rod 17, a connecting piece 18, a chair back 20, a chair seat 30, a turnover mechanism 40, an upper pivot arm 41, a lower pivot arm 42, an adjusting bolt 43, a support part 44, a compression spring 45, a rear chair wheel 51, a front chair wheel 52, an upper chair rest frame 60, a positioning column 61, a positioning groove 62, a lower chair rest frame 70, a support handle 71, a guide column groove 72, an adjusting rotating pin 73, a disc part 74, a shifting piece part 75, a pin column part 76, a telescopic rod 80, a control handle 81, a battery box 82, a pedal 83, a limiting pin 84, an automatic locking mechanism 90, a locking block 91, a locking seat 92, a locking groove 93, a guide column sleeve 94, a sliding groove 95, a pull rod 96, a pull.

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

Referring to fig. 1, fig. 1 is a perspective view of a collapsible wheelchair according to an embodiment of the present application. As shown in the figures, the foldable wheelchair comprises a framework 10, wherein the framework 10 comprises an upper support rod 11, and two ends of the upper support rod 11 are connected with a chair back 20; upper mounting frames 12 mounted on both sides of the backrest 20, the upper mounting frames 12 supporting the seat 30; a lower support rod 13 connected with the upper support rod 11 through the turnover mechanism 40, and two ends of the lower support rod 13 are connected with a rear wheel 51; a lower mounting frame 14 extending and connecting with the lower stay bar 13, wherein the lower mounting frame 14 is provided with a front wheel 52 and is connected with a rear wheel 51 through a hinge frame 15 and is connected with the upper mounting frame 12; an upper armrest frame 60 pivotally connected to the seat back 20; a lower armrest frame 70 pivotally coupled to the seat 30 and movably supporting the upper armrest frame 60; the telescopic rod 80 is telescopically sleeved in the upper armrest frame 60, and the telescopic rod 80 is provided with a control handle 81; and a battery case 82 attached to the lower mounting frame 14.

The utility model discloses an among the embodiment, the monolith support of wheelchair is constituteed to skeleton 10, connect fixed back of the chair 20 through last vaulting pole 11, and install the upper portion installing frame 12 that supports seat support 30 additional in the both sides of the back of the chair 20, lower vaulting pole 13 is connected to back chair wheel 51, and transversely extend lower part installing frame 14, be used for erection joint to preceding chair wheel 52, then be connected to back chair wheel 51 through hinge mount 15, finally link up upper portion installing frame 12 and accomplish holistic fixed, constitute skeleton 10, accomplish stable support.

In addition, the upper armrest frame 60 is pivoted on both sides of the backrest 20, and is matched and pivoted on the lower armrest frame 70 of the seat 30 to form an integral armrest, which is convenient for users to use. An extension rod 80 is inserted into the inside of the upper armrest frame 60, and a control handle 81 is installed at the end thereof. Preferably, the telescopic rod 80 is provided with a plurality of limiting holes, the upper handrail frame 60 is provided with a limiting pin 84 which is buckled and inserted into the limiting holes, and the telescopic handrail frame is adjusted in a telescopic mode to adapt to different user experiences and is higher in flexibility. A battery case 82 for storing a battery is attached to the lower mounting frame 14 to realize electric control.

Referring to fig. 2, fig. 2 is a schematic view illustrating an installation of the turnover mechanism according to the embodiment of the present application. The turnover mechanism 40 includes an upper pivot arm 41 fixed at two ends of the upper stay 11, one end of the upper pivot arm 41 is pivotally sleeved on a lower pivot arm 42 of the lower stay 13, an adjusting bolt 43 is penetrated at the other end, the adjusting bolt 43 is movably pressed against a support part 44 of the lower pivot arm 42, the support part 44 is adhered to a rubber pad, the upper end of the adjusting bolt 43 is limited by a nut and pressed against, and a compression spring 45 is sleeved at the lower end. In the present embodiment, the upper stay 11 is pivoted to the lower pivot arm 42 sleeved on the lower stay 13 by the sleeved upper pivot arm 41, and the other end opposite to the pivoted position is abutted by the adjusting bolt 43. Specifically, the adjusting bolt 43 is mounted on the upper pivot arm 41, the lower end is sleeved with the compression spring 45, the upper end is limited by a nut, and the adjusting bolt can be pressed on the lower pivot arm 42 in an abutting mode, so that the effect of buffering and shock absorption can be achieved 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, so as to form a certain expansion stroke of the adjusting bolt 43.

Referring to fig. 3, fig. 3 is a schematic view of an automatic locking mechanism according to an embodiment of the present application. An automatic locking mechanism 90 is further arranged between the upper support rod 11 and the lower support rod 13, and the automatic locking mechanism 90 comprises a locking block 91 fixed at the center of the upper support rod 11 and a corresponding locking seat 92 installed on the lower support rod 13.

The utility model discloses an embodiment, automatic latched device 90 is when rotating upper support rod 11 and lower support rod 13, along with holistic folding rotation, can separate between lock joint piece 91 and the lock joint seat 92 folding, and the wheelchair is opened to also can the lock joint, has realized automatic hasp locate function.

Specifically, the snap-on block 91 is pressed against the lower stay 13 by an upper end arc, and has a snap groove 93 facing the snap seat 92; the buckling seat 92 comprises a guide post sleeve 94 arranged at intervals on the lower stay bar 13, and the guide post sleeve 94 is provided with opposite sliding grooves 95; pull rods 96 respectively penetrating the guide post sleeves 94, the outer ends of the pull rods 96 positioned on the guide post sleeves 94 are connected through pull pieces 97, and the inner ends are connected through buckling rods 98 corresponding to the buckling grooves 93; and a spring sleeved on the pull rod 96 and positioned in the guide post sleeve 94; wherein, the pull tab 97 is pulled to drive the pull rod 96 to expand and contract the spring, so that the buckling rod 98 is buckled with or separated from the buckling groove 93; when the buckle lever 98 is buckled to the buckle groove 93, the adjusting bolt 43 is pressed against the support portion 44 of the lower pivot arm 42.

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

The front end of the lower mounting frame 14 is also provided with a pedal 83 for a user to pedal.

Next, please refer to fig. 4 and 5 together, fig. 4 is a schematic view illustrating an upper armrest frame and a lower armrest frame according to an embodiment of the present application; fig. 5 is a schematic diagram of the separation of fig. 4. The middle section of the upper armrest frame 60 is provided with a positioning column 61 extending downwards, and the side surface of the positioning column 61 is provided with a positioning groove 62; the front end of the lower armrest frame 70 is provided with a support handle 71 supporting the upper armrest frame 60, the support handle 71 is hollow and is provided with a guide column groove 72 inserted with the positioning column 61, and the side surface of the support handle 71 is provided with an adjusting rotating pin 73 of the movable locking positioning groove 62.

In this embodiment, the middle section of the upper armrest frame 60 is provided with a positioning column 61 extending downwards, the corresponding support handle 71 is provided with a guide column groove 72 for inserting the positioning column 61, the side surface of the positioning column 61 is provided with a concave positioning groove 62, the side surface of the support handle 71 is provided with an adjusting rotating pin 73 penetrating into the positioning groove, the positioning column 61 can be movably locked, fixing and separation are achieved, the disassembly and folding are convenient to extract, and the use convenience is improved.

The adjusting rotating pin 73 comprises a disc part 74 exposed out of the side surface of the holding handle 71; a paddle portion 75 extending to the upper end of the disk portion 74; and a pin portion 76 eccentrically provided in the disk portion 75 and fittable into the positioning groove 62. By rotating the dial piece 75, the disc part 74 drives the pin part 76 to eccentrically rotate, the positioning groove 62 is buckled or separated, the pin part 76 is locked or unlocked, the upper handrail frame 60 and the lower handrail frame 70 are separated and folded, and the portability is greatly improved.

It is worth mentioning that the upper end of the upper handrail frame 70 is glued with the leather protection pad, so that the use is comfortable. In addition, the upper end of the carrying handle 71 is provided with a radian, and the cambered surface is matched with the upper handrail frame 60, so that smooth transition is realized, and the stability is better.

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims

1. A 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 foldable wheelchair as claimed in 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 provided with a compression spring.

3. The foldable wheelchair as claimed in claim 2, wherein an automatic locking mechanism is further provided between the upper stay and the lower stay, the automatic locking mechanism comprises a locking block fixed at the center of the upper stay and a corresponding locking seat mounted on the lower stay; 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 collapsible wheelchair as claimed in claim 1 wherein said upper mounting frame has a fold from the underside of said seat to the back of the chair, said fold being connected by a cross bar pivotally connected to said back by a sleeved connecting piece.

5. The collapsible wheelchair of claim 1 in which a pedal is also mounted to a forward end of said lower mounting frame.

6. The foldable wheelchair as claimed in claim 1, wherein the upper armrest frame has a positioning column extending downward at a middle section thereof, and the positioning column has a positioning groove at a side thereof; 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 collapsible wheelchair as claimed in claim 6, wherein said adjustment pivot pin comprises a disk portion exposed to 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 collapsible wheelchair of claim 6 wherein said upper armrest frame is glued to a leather pad at the upper end.

9. The foldable wheelchair as claimed in claim 1, wherein the telescopic rod has a plurality of limit holes, and the upper armrest frame has limit pins which are snap-fitted into the limit holes.