CN209713435U - A kind of wheelchair foldable structure - Google Patents
A kind of wheelchair foldable structure Download PDFInfo
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- CN209713435U CN209713435U CN201821802831.0U CN201821802831U CN209713435U CN 209713435 U CN209713435 U CN 209713435U CN 201821802831 U CN201821802831 U CN 201821802831U CN 209713435 U CN209713435 U CN 209713435U
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- connecting rod
- wheelchair
- back bracket
- folding
- folding connecting
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Abstract
The utility model belongs to the field of medical instrument technology, in particular to a kind of wheelchair foldable structure, including seat support, rotation is provided with front wheel carrier and rear wheel frame for installing wheel on seat support, seat support rear portion is additionally provided with back bracket, rotation is provided with folding connecting rod in the back bracket, folding connecting rod and rear wheel frame are rotatablely connected, and control device is provided between back bracket and folding connecting rod, control device controls back bracket and folding connecting rod is relatively fixed, when wheelchair expansion, control device controls back bracket and folding connecting rod is relatively fixed, rear wheel frame, seat support, back bracket and folding connecting rod form stable triangle structure, when wheelchair folds, back bracket and folding connecting rod relatively rotate, rear wheel frame, seat support, back bracket and folding connecting rod form four-bar mechanism and carry out folding rotation, this is practical Novel purpose is to provide a kind of good folding effect, stable structure and the wheelchair foldable structure conveniently unfolded and folded.
Description
Technical field
The utility model belongs to the field of medical instrument technology, in particular to a kind of wheelchair foldable structure.
Background technique
Wheelchair is a kind of common medical instrument, is a kind of important rehabilitation tool, wheelchair it be not only limbs the disabled
With the walking-replacing tool of people with mobility problems, it is often more important that user can carry out physical exercise by wheelchair and participate in social living
Dynamic, wheelchair is a kind of walking-replacing tool and a kind of seat for resting for handicapped people, but currently on the market
Wheelchair greatly can folding storage, but most of wheelchair folding effect is poor in the market, the space that stowed rear wheels chair occupies compared with
Greatly, it has not been convenient to transport and storage of the user to wheelchair.
Summary of the invention
In order to overcome the defects of the prior art, good, structure that the purpose of this utility model is to provide a kind of folding effects
The wheelchair foldable structure stablized and conveniently unfolded and folded.
Purpose of the utility model is realized as follows:
A kind of wheelchair foldable structure, including seat support, rotation is provided with the front-wheel for installing wheel on seat support
Frame and rear wheel frame, seat support rear portion are additionally provided with back bracket, and rotation is provided with folding connecting rod in the back bracket, fold
Connecting rod and rear wheel frame are rotatablely connected, and control device is provided between back bracket and folding connecting rod, when wheelchair expansion, control
Device controls back bracket and folding connecting rod is relatively fixed, and rear wheel frame, seat support, back bracket and folding connecting rod form stabilization
Triangular structure, when wheelchair folds, back bracket and folding connecting rod are relatively rotated, rear wheel frame, seat support, back bracket and
Folding connecting rod forms four-bar mechanism and carries out folding rotation.
Clamping portion is fixedly installed in the back bracket, control device includes the clamping being movably arranged on folding connecting rod
Part, the relative rotation of shackle member and clamping portion cooperation limitation back bracket and folding connecting rod.
Limiting section is provided in the back bracket, limiting section limits the rotational angle of back bracket and folding connecting rod,
And when wheelchair expansion, clamping portion and shackle member cooperate, while folding connecting rod is resisted against on limiting section.
The clamping portion includes guide groove and the blocked hole with shackle member cooperation, and during wheelchair expansion, shackle member is first
Cooperate into guide groove, and by the guiding of guide groove and blocked hole.
Mounting groove is provided on the folding connecting rod, shackle member is slidably arranged in mounting groove, is fixedly installed in shackle member
Have control shackle member movement control unit, control unit be pierced by mounting groove and it is exposed outside.
It is provided with the elastic component of driving shackle member and clamping portion cooperation in the mounting groove, is additionally provided with limit on mounting groove
Slot, control unit are slidably arranged in mounting groove.
It is provided with sealing convex edge on the control unit, when control unit slides in limiting slot, seals convex edge always to limit
Position slot is sealed.
Rotation is provided with kinematic link on the folding connecting rod, and kinematic link and front wheel carrier are rotatablely connected, are connected by transmission
Bar moves synchronously front wheel carrier with folding connecting rod, and during wheelchair expansion, folding connecting rod moves and front wheel carrier is driven gradually to open up
It opens, and when wheelchair is fully deployed, folding connecting rod is relatively fixed with back bracket, kinematic link controls front wheel carrier and rear wheel frame phase
To fixation, in wheelchair folding process, kinematic link controls front wheel carrier and rear wheel frame synchronous folding.
Folding pedal is provided on the kinematic link.
The back bracket two sides, which rotate, is provided with handrail, and bayonet is provided on handrail, be provided in back bracket with
The protrusion of bayonet cooperation, bayonet keep handrail relatively fixed with back bracket with male cooperation.
Compared with the prior art, the utility model has prominent and beneficial technical effects that:
1, rotation is provided with folding connecting rod in back bracket described in the utility model, and folding connecting rod and rear wheel frame rotation connect
Connect, and be provided with control device between back bracket and folding connecting rod, when wheelchair expansion when, control device control back bracket with
Folding connecting rod is relatively fixed, and rear wheel frame, seat support, back bracket and folding connecting rod form stable triangle structure, triangle
Structural stability is good, and is conducive to improve the structural strength of wheelchair, and when wheelchair folds, back bracket is opposite with folding connecting rod to be turned
Dynamic, rear wheel frame, seat support, back bracket and folding connecting rod form four-bar mechanism and carry out folding rotation, the setting of four-bar mechanism
Be conducive to the linkage of rear wheel frame, seat support, back bracket and folding connecting rod, be convenient for wheelchair fast folding, and in the structure after
Wheel carrier, seat support, back bracket and folding connecting rod are turned folding, and are conducive to reduce the folded volume of wheelchair, just
It is transported in storage.
2, clamping portion is fixedly installed in back bracket described in the utility model, control device includes being movably arranged on folding
Shackle member on connecting rod, the relative rotation of shackle member and clamping portion cooperation limitation back bracket and folding connecting rod, is tied by clamping
Structure is relatively fixed with back bracket by folding connecting rod, and structure is simple, convenient for users to operation control；The clamping portion includes guiding
Slot and the blocked hole cooperated with shackle member, during wheelchair expansion, shackle member is introduced into guide groove, and leading by guide groove
Cooperate to blocked hole, the quick-fit of guide groove being provided with conducive to shackle member and blocked hole is user-friendly；It is described
Limiting section is provided in back bracket, limiting section limits the rotational angle of back bracket and folding connecting rod, and when wheelchair is unfolded
When, clamping portion and shackle member cooperate, while folding connecting rod is resisted against on limiting section, which is convenient for wheelchair rapid deployment, and takes turns
Folding connecting rod is resisted against on limiting section always in chair use process, is avoided stress concentration in shackle member, and the structure of wheelchair is improved
Intensity.
3, it is provided with mounting groove on folding connecting rod described in the utility model, shackle member is slidably arranged in mounting groove, clamping
Be fixedly installed on part control shackle member movement control unit, control unit be pierced by mounting groove and it is exposed outside, convenient for user control
Fabrication fitting, it is user-friendly, it is provided with the elastic component of driving shackle member and clamping portion cooperation in the mounting groove, avoids
Shackle member and shackle portion are from improving the safety of wheelchair, limiting slot is additionally provided on mounting groove, control unit is sliding in use process
It is dynamic to be arranged in mounting groove, avoid shackle member from being detached from from mounting groove；Sealing convex edge is provided on control unit, when control unit is limiting
When sliding in the slot of position, sealing convex edge is always sealed limiting slot, avoids sundries from entering in mounting groove from limiting slot, to lead
It causes shackle member stuck, reduces the failure rate of wheelchair.
4, rotation is provided with kinematic link on folding connecting rod described in the utility model, and kinematic link and front wheel carrier rotation connect
It connects, moves synchronously front wheel carrier with folding connecting rod by kinematic link, during wheelchair expansion, folding connecting rod is moved and driven
Front wheel carrier is gradually spread out, and when wheelchair is fully deployed, folding connecting rod is relatively fixed with back bracket, and kinematic link controls front-wheel
Frame is relatively fixed with rear wheel frame, and in wheelchair folding process, kinematic link controls front wheel carrier and rear wheel frame synchronous folding, before being convenient for
The folding and expansion of wheel carrier, the fast folding of Convenient wheelchair, rotation is provided with folding pedal on the kinematic link, can roll over
Folded pedal is conducive to reduce the folded volume of wheelchair, convenient for storage transport.
5, back bracket two sides described in the utility model, which rotate, is provided with handrail, and bayonet, backrest branch are provided on handrail
The protrusion with bayonet cooperation is provided on frame, bayonet keeps handrail relatively fixed with back bracket with male cooperation, and structure is simple, just
In folding and unfolding for handrail.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of the utility model wheelchair unfolded state；
Fig. 2 is the second structural representation of the utility model wheelchair unfolded state；
Fig. 3 is the structural schematic diagram of the utility model wheelchair folded state；
Fig. 4 is the attachment structure schematic diagram of back bracket and folding connecting rod in the utility model；
Fig. 5 is the cross-sectional view of control device in the utility model；
Fig. 6 is the structural schematic diagram of handrail in the utility model.
Figure label meaning:
1- back bracket；2- handrail；3- seat support；4- rear wheel frame；5- front wheel carrier；6- kinematic link；
7- control device；8- pedal；9- folding connecting rod；10- support leg；11- seat hinged seat；
12- handrail rotation axis；13- protrusion；The clamping portion 14-；15- hinge hole；16- limiting section；21- connecting hole；22- card
Mouthful；71- mounting groove；72- shackle member；73- control unit；74- elastic component；75- sleeve；
91- abutting portion；141- guide groove；142- blocked hole.
Specific embodiment
The utility model is further described with specific embodiment with reference to the accompanying drawing:
As shown in Fig. 1 to Fig. 6, a kind of wheelchair foldable structure, including seat support 3, rotation setting is useful on seat support 3
In installation and front wheels and rear wheels respectively on the front wheel carrier 5 and rear wheel frame 4 of installation wheel, front wheel carrier 5 and rear wheel frame 4, the present embodiment
In preferably 3 two sides of seat support be symmetrically arranged with front wheel carrier 5 and rear wheel frame 4, and front wheel carrier 5 is rotated coaxially with rear wheel frame 4, described
3 rear portion of seat support is additionally provided with back bracket 1, and rotation is provided with folding connecting rod 9 in the back bracket 1, folding connecting rod 9 with
Rear wheel frame 4 is rotatablely connected, and control device 7 is provided between back bracket 1 and folding connecting rod 9, when wheelchair expansion, control dress
It sets 7 control back brackets 1 and folding connecting rod 9 is relatively fixed, rear wheel frame 4,9 shape of seat support 3, back bracket 1 and folding connecting rod
At stable triangle structure, when wheelchair folds, back bracket 1 and folding connecting rod 9 are relatively rotated, rear wheel frame 4, seat support 3,
Back bracket 1 and folding connecting rod 9 form four-bar mechanism and carry out folding rotation, and 1 rear portion of back bracket is provided with seat in the present embodiment
Chair hinged seat 11 avoids seat hinged seat 11 from influencing the comfort of wheelchair, and avoids back bracket 1 and seat in wheelchair folding process
3 articulated position of chair bracket causes the cloth on wheelchair to damage.
Clamping portion 14 is fixedly installed in the back bracket 1, control device 7 includes being movably arranged on folding connecting rod 9
Shackle member 72, shackle member 72 and clamping portion 14 cooperation limitation back bracket 1 and folding connecting rod 9 relative rotation, due to using
Need back bracket 1 and folding connecting rod 9 relatively fixed in the process, so shackle member 72 needs to be fitted close with clamping portion 14, but
It is that each components have abrasion and deformation in use process, is unable to quick-fit so as to cause shackle member 72 and clamping portion 14,
The preferred clamping portion 14 of the utility model includes guide groove 141 and the blocked hole 142 with the cooperation of shackle member 72, and wheelchair was unfolded
Cheng Zhong, shackle member 72 is introduced into guide groove 141, and cooperates by the guiding of guide groove 141 and blocked hole 142, passes through guide groove
141 guiding is corrected the motion profile of shackle member 72, convenient for shackle member 72 and 142 quick-fit of blocked hole, conveniently makes
User uses.
Due to back bracket 1 and folding connecting rod 9 carried out by shackle member 72 it is relatively fixed, using expansion in use, card
It will appear stress concentration on fitting 72, the easy stress and deformation of shackle member 72 even damages after long-time service, preferably sets in back bracket 1
It is equipped with limiting section 16, limiting section 16 limits the rotational angle of back bracket 1 Yu folding connecting rod 9, during avoiding wheelchair from being unfolded,
Back bracket 1 and 9 rotational angle of folding connecting rod are excessive, and when wheelchair expansion, clamping portion 14 and shackle member 72 cooperate, and roll over simultaneously
Folded connecting rod 9 is resisted against on limiting section 16, is increased the contact area of folding connecting rod 9 and back bracket 1, is avoided stress from concentrating, this reality
With the abutting portion 91 being provided on novel preferred folding connecting rod 9 with the cooperation of limiting section 16.
Mounting groove 71 is provided on the folding connecting rod 9, shackle member 72 is slidably arranged in mounting groove 71, in the present embodiment
Mounting groove 71 is tubular, which advantageously reduces sundries and enter mounting groove 71, and tubular facilitates processing, in shackle member 72
It is fixedly installed the control unit 73 that control shackle member 72 moves, control unit 73 is connected through a screw thread to be fixedly connected with shackle member 72,
And control unit 73 be pierced by mounting groove 71 and it is exposed outside, it is for user-friendly control；Two groups of clampings are preferably provided in the utility model
Part 72 and two blocked holes 142, two groups of shackle members 72 are symmetricly set in mounting groove 71, are provided with bullet between two groups of shackle members 72
Property part 74, elastic component 74 drives shackle member 72 and blocked hole 142 to cooperate；
Elastic component 74 is compressed spring in the present embodiment, matches shackle member 72 always with blocked hole 142 by compressed spring
It closes, avoids in use process shackle member 72 from separating with blocked hole 142 and cause contingency, also set up on the mounting groove 71 limited
Position slot, control unit 73 is slidably arranged in mounting groove 71, and shackle member 72 is from mounting groove 71 when the setting of limiting slot avoids folding
Middle disengaging, it is user-friendly, sealing convex edge is preferably provided on control unit 73, when control unit 73 slides in limiting slot
When, sealing convex edge is always sealed limiting slot, avoids sundries from entering in mounting groove 71 from limiting slot, so as to cause shackle member
72 is stuck, reduces the failure rate of wheelchair.
Preferred mounting groove 71 is fixed on folding connecting rod 9 in the present embodiment, and 719 both ends of mounting groove are provided with sleeve
75, shackle member 72 is slidably connected with sleeve 75, convenient for reducing the abrasion in the sliding of shackle member 72, makes shackle member 72 and blocked hole
142 precisely cooperations, sleeve 75 are relatively fixed by screw and folding connecting rod 9.
Rotation is provided with kinematic link 6 on the folding connecting rod 9, and kinematic link 6 and front wheel carrier 5 are rotatablely connected, and passes through biography
Dynamic connecting rod 6 moves synchronously front wheel carrier 5 with folding connecting rod 9, and during wheelchair expansion, folding connecting rod 9 moves and drives front-wheel
Frame 5 is gradually spread out, and when wheelchair is fully deployed, and folding connecting rod 9 and back bracket 1 are relatively fixed, and kinematic link 6 controls front-wheel
Frame 5 and rear wheel frame 4 are relatively fixed, and in wheelchair folding process, kinematic link 6 controls front wheel carrier 5 and 4 synchronous folding of rear wheel frame,
Convenient for the folding and expansion of front wheel carrier 5, the fast folding of Convenient wheelchair, rotation is provided with folding on the kinematic link 6
Pedal 8, folding pedal 8 are conducive to reduce the folded volume of wheelchair, convenient for storage transport.
1 two sides of back bracket are provided with handrail 2, and 1 two sides of back bracket are provided with handrail rotation axis 12, handrail 2
On be provided with connecting hole 21, connecting hole 21 and the cooperation of handrail rotation axis 12 are rotatably arranged on handrail 2 in back bracket 1, handrail 2
On be provided with bayonet 22, the protrusion 13 cooperated with bayonet 22 is provided in back bracket 1, bayonet 22 cooperates with raised 13 and makes to help
Hand 2 and back bracket 1 are relatively fixed, and preferably protrusion 13 is arranged below handrail rotation axis 12, when user uses handrail 2,
Bayonet 22 is pushed against in protrusion 13, and bayonet 22 and protrusion 13 is avoided to be detached from.
Two clamping portions, 14 side, which rotates, in the utility model is provided with support leg 10, when wheelchair folds, support leg
10 and wheelchair rear-wheel simultaneously with ground face contact, can stand on wheelchair on ground, convenient for users to mobile wheelchair, work as wheelchair
When expansion, support leg 10 and clamping portion 14, which relatively rotate, carries out folding storage, uses wheelchair convenient for user, avoid using when branch
Support foot 10 causes user injured.
Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this
It encloses, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by the protection of the utility model
Within the scope of.
Claims (10)
1. a kind of wheelchair foldable structure, including seat support (3), rotates and be provided with for installing wheel on seat support (3)
Front wheel carrier (5) and rear wheel frame (4), seat support (3) rear portion are additionally provided with back bracket (1), it is characterised in that: the backrest branch
Rotation is provided with folding connecting rod (9) on frame (1), and folding connecting rod (9) and rear wheel frame (4) are rotatablely connected, and back bracket (1) and folding
Control device (7) are provided between folded connecting rod (9), when wheelchair expansion, control device (7) controls back bracket (1) and folds
Connecting rod (9) is relatively fixed, and rear wheel frame (4), seat support (3), back bracket (1) and folding connecting rod (9) form stable triangle
Structure, when wheelchair folds, back bracket (1) and folding connecting rod (9) are relatively rotated, rear wheel frame (4), seat support (3), backrest
Bracket (1) and folding connecting rod (9) form four-bar mechanism and carry out folding rotation.
2. a kind of wheelchair foldable structure according to claim 1, it is characterised in that: fixation is set on the back bracket (1)
It is equipped with clamping portion (14), control device (7) includes the shackle member (72) being movably arranged on folding connecting rod (9), shackle member (72)
Cooperate the relative rotation of limitation back bracket (1) and folding connecting rod (9) with clamping portion (14).
3. a kind of wheelchair foldable structure according to claim 2, it is characterised in that: be provided on the back bracket (1)
Limiting section (16), limiting section (16) limit the rotational angle of back bracket (1) Yu folding connecting rod (9), and when wheelchair expansion,
Clamping portion (14) and shackle member (72) cooperate, while folding connecting rod (9) is resisted against on limiting section (16).
4. a kind of wheelchair foldable structure according to claim 3, it is characterised in that: the clamping portion (14) includes guide groove
(141) and with shackle member (72) blocked hole (142) cooperated, during wheelchair expansion, shackle member (72) is introduced into guide groove
(141), and by the guiding of guide groove (141) and blocked hole (142) cooperate.
5. a kind of wheelchair foldable structure according to Claims 2 or 3 or 4, it is characterised in that: on the folding connecting rod (9)
It is provided with mounting groove (71), shackle member (72) is slidably arranged in mounting groove (71), and shackle member is fixedly installed control on (72)
Shackle member (72) movement control unit (73), control unit (73) be pierced by mounting groove (71) and it is exposed outside.
6. a kind of wheelchair foldable structure according to claim 5, it is characterised in that: be provided with drive in the mounting groove (71)
The elastic component (74) of dynamic shackle member (72) and clamping portion (14) cooperation, mounting groove are additionally provided with limiting slot, control unit on (71)
(73) it is slidably arranged in mounting groove (71).
7. a kind of wheelchair foldable structure according to claim 6, it is characterised in that: be provided on the control unit (73) close
Convex edge is sealed, when control unit (73) slides in limiting slot, sealing convex edge is always sealed limiting slot.
8. a kind of wheelchair foldable structure described according to claim 1 or 2 or 3 or 4 or 6 or 7, it is characterised in that: the folding
Rotation is provided with kinematic link (6) on connecting rod (9), and kinematic link (6) and front wheel carrier (5) are rotatablely connected, and is passed through kinematic link (6)
Move synchronously front wheel carrier (5) with folding connecting rod (9), during wheelchair expansion, folding connecting rod (9) moves and drives front wheel carrier
(5) it gradually spreads out, and when wheelchair is fully deployed, folding connecting rod (9) and back bracket (1) are relatively fixed, kinematic link (6) control
Front wheel carrier (5) processed and rear wheel frame (4) are relatively fixed, and in wheelchair folding process, kinematic link (6) controls front wheel carrier (5) with after
Wheel carrier (4) synchronous folding.
9. a kind of wheelchair foldable structure according to claim 8, it is characterised in that: be provided on the kinematic link (6)
Folding pedal (8).
10. a kind of wheelchair foldable structure described according to claim 1 or 2 or 3 or 4 or 6 or 7 or 9, it is characterised in that: described
Back bracket (1) two sides, which rotate, to be provided with handrail (2), is provided on handrail (2) bayonet (22), back bracket is arranged on (1)
There is the protrusion (13) with bayonet (22) cooperation, bayonet (22) keeps handrail (2) and back bracket (1) relatively solid with raised (13) cooperation
It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821802831.0U CN209713435U (en) | 2018-11-02 | 2018-11-02 | A kind of wheelchair foldable structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821802831.0U CN209713435U (en) | 2018-11-02 | 2018-11-02 | A kind of wheelchair foldable structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209713435U true CN209713435U (en) | 2019-12-03 |
Family
ID=68658315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821802831.0U Active CN209713435U (en) | 2018-11-02 | 2018-11-02 | A kind of wheelchair foldable structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209713435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7383313B1 (en) | 2022-07-13 | 2023-11-20 | イープラス合同会社 | wheelchair that can be raised and lowered |
-
2018
- 2018-11-02 CN CN201821802831.0U patent/CN209713435U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7383313B1 (en) | 2022-07-13 | 2023-11-20 | イープラス合同会社 | wheelchair that can be raised and lowered |
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