CN110403775B - Wheelchair with rocking chair function - Google Patents
Wheelchair with rocking chair function Download PDFInfo
- Publication number
- CN110403775B CN110403775B CN201910747260.8A CN201910747260A CN110403775B CN 110403775 B CN110403775 B CN 110403775B CN 201910747260 A CN201910747260 A CN 201910747260A CN 110403775 B CN110403775 B CN 110403775B
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- China
- Prior art keywords
- connecting rod
- rod
- joint plate
- clamping groove
- shaped clamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000003139 buffering effect Effects 0.000 claims abstract description 6
- 238000013016 damping Methods 0.000 claims description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 1
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000000276 sedentary effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1067—Arrangements for adjusting the seat adjusting the backrest relative to the seat portion
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Rehabilitation Tools (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention provides a wheelchair with a rocking chair function, which comprises a seat body and a seat body, wherein the seat body comprises a left-right symmetrical bracket group, and the bracket group comprises an unstable quadrilateral structure which is formed by mutually hinging a first connecting rod, a second connecting rod, a third connecting rod and a joint plate and has four hinging points; the locking device comprises a U-shaped clamping groove on the joint plate and a locking rod unit arranged on the third connecting rod, wherein the locking rod unit can be limited at least two different positions of the third connecting rod, the locking rod unit is respectively clamped and fixed at the bottom of the U-shaped clamping groove and suspended in the U-shaped clamping groove, and a first elastic piece is further arranged between the joint plate and the third connecting rod; the seat body is arranged on the left joint plate and the right joint plate. When the lock rod unit is suspended in the U-shaped clamping groove, the third connecting rod and the joint plate can relatively rotate in a limited angle, the rocking chair function can be realized by rotating the backrest, and the first elastic piece can provide elastic buffering and resetting functions for the rocking chair.
Description
Technical Field
The invention relates to the technical field of seats, in particular to a wheelchair with a rocking chair function.
Background
The seat body of the existing wheelchair (including the wheelchairs for disabled persons, strollers and other pushable seats) is usually of a fixed structure, and the existing wheelchair lacks the function of enhancing comfort. For a person who sits for a long time or needs to take a wheelchair because of physical inactivity, a sitting posture with a single posture can lead to stiff and tired body and is unfavorable for health.
Disclosure of Invention
The invention aims to provide a wheelchair capable of relieving physical stiffness caused by sedentary sitting.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The wheelchair with the rocking chair function comprises a seat body with a backrest and a seat plate and a seat body for supporting the seat body, wherein the seat body comprises a left-right symmetrical bracket group, the bracket group comprises a longitudinal first connecting rod, a second connecting rod hinged to the front end of the first connecting rod and a third connecting rod hinged to the rear end of the first connecting rod; the bracket group further comprises a joint plate, and the other ends of the second connecting rod and the third connecting rod are hinged with the joint plate, so that the first connecting rod, the second connecting rod, the third connecting rod and the joint plate form an unstable quadrilateral structure with four hinge points; the seat body further comprises a locking device arranged between the joint plate and the third connecting rod, the locking device comprises a U-shaped clamping groove arranged on the joint plate and a lock rod unit arranged on the third connecting rod, the lock rod unit can be limited at least two different positions of the third connecting rod, the lock rod unit is respectively clamped and fixed at the bottom of the U-shaped clamping groove and suspended in the U-shaped clamping groove, and a first elastic piece for buffering the relative rotation of the joint plate and the third connecting rod is further arranged between the joint plate and the third connecting rod; the seat body is arranged on the left joint plate and the right joint plate of the seat body.
Further, the bottom of the U-shaped clamping groove is provided with a plurality of parallel clamping positions for limiting the lock rod unit, and a spacing space for the lock rod unit to move back and forth is arranged between the two inner side walls of the U-shaped clamping groove.
Preferably, the third connecting rod is provided with a chute along the length direction, the lock rod unit comprises a first lock rod, a second elastic piece and a handle unit, the two ends of the first lock rod are respectively matched with the left and right groups of the first lock rods in the chute, the second elastic piece is used for driving the first lock rod to be clamped into the bottom of the U-shaped clamping groove, and the handle unit is used for pulling the first lock rod reversely and enabling the first lock rod to be suspended in the U-shaped clamping groove.
Preferably, the handle unit comprises a U-shaped second lock rod with two ends rotatably connected between the left and right joint plates, and a handle provided with a return-type groove and movably limiting the first lock rod and the second lock rod in the return-type groove, wherein the first lock rod is provided with a cam which radially abuts against the second lock rod and has a radius not exceeding the depth of the U-shaped clamping groove, and when the handle is pressed down, the second lock rod can pass through the vertex of the cam backwards and is clamped between the cam and the inner wall of the return-type groove, and meanwhile, the first lock rod is separated from the bottom of the U-shaped clamping groove.
Preferably, a transverse supporting rod is further arranged between the left bracket group and the right bracket group, and the supporting rod can limit the pressing position of the handle.
Preferably, the handle is provided with a pedal, and the first lock rod can be separated from the U-shaped clamping groove by applying downward pressure to the pedal.
Further, the third connecting rod is internally provided with a damping spring structure.
Further, the base is further hinged with a brake rod and an L-shaped brake pad, and the brake rod and the brake pad form a lever structure, so that the brake pad is abutted against or separated from the wheel when the brake rod is pulled up and down.
Further, the front ends of the two sides of the seat board are hinged with a fourth connecting rod, and the other end of the fourth connecting rod is hinged with the front end of the first connecting rod.
The invention has the beneficial effects that: when the lock rod unit is suspended in the U-shaped clamping groove, the third connecting rod and the joint plate can rotate relatively around the hinging point, and the two inner side walls of the U-shaped clamping groove limit the lock rod unit, so that the third connecting rod and the joint plate can rotate relatively in a limited angle, the backrest can be rotated back and forth to realize the rocking chair function, and the first elastic piece can provide elastic buffering and resetting functions for the rocking chair, thereby improving the comfort of use and saving more labor when rocking.
Drawings
The invention will now be described in further detail with reference to the drawings and to specific examples.
FIG. 1 is a schematic view of a wheelchair in an embodiment;
FIG. 2 is a schematic view of a seat structure according to an embodiment;
FIG. 3 is a schematic illustration of a joint plate structure;
FIG. 4 is a schematic view of the first locking bar and the articulation plate in a locked state;
FIG. 5 is a schematic view of the first lock lever in a suspended state;
Fig. 6 is a schematic structural view of the first lock lever when it is separated from the U-shaped slot of the knuckle plate.
Wherein: 1. a bracket group; 11. a first link; 12. the second connecting rod, 13, the third connecting rod, 131 and the chute; 14. a joint plate; 141. a U-shaped clamping groove; 1411. clamping; 1412. an inner sidewall; 15. a first lock lever; 16. a second elastic member; 17. a handle unit; 171. a second lock lever; 172. a loop-shaped groove; 173. a handle; 1731. a pedal; 174. a cam; 18. a first elastic member; 19. a support rod; 21. a brake lever; 22. a brake pad; 3. a seat body; 31. a seat plate; 32. a backrest; 33. a wheel; 34. and a fourth link.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
in the embodiment, the front refers to one side of the wheelchair where feet are placed; the back side of the wheelchair is the back side.
Referring to fig. 1 to 6, a wheelchair having a rocking chair function includes a seat body 3 having a backrest 32 and a seat plate 31, a seat body for supporting the seat body 3, and wheels 33 mounted at the bottom of the seat body, the seat body including a support group 1 symmetrically left and right, the support group 1 including a first link 11 longitudinally, a second link 12 hinged to the front end of the first link 11, and a third link 13 hinged to the rear end of the first link 11; the bracket set 1 further comprises an articulation plate 14, and the other ends of the second connecting rod 12 and the third connecting rod 13 are hinged with the articulation plate 14, so that the first connecting rod 11, the second connecting rod 12, the third connecting rod 13 and the articulation plate 14 form an unstable quadrilateral structure with four hinge points; the seat body further comprises a locking device arranged between the joint plate 14 and the third connecting rod 13, the locking device comprises a U-shaped clamping groove 141 arranged on the joint plate 14 and a locking rod unit arranged on the third connecting rod 13, the locking rod unit can be limited at least two different positions of the third connecting rod 13, the locking rod unit is respectively clamped and fixed at the bottom of the U-shaped clamping groove 141 and suspended in the U-shaped clamping groove 141, and a first elastic piece 18 for buffering the relative rotation of the joint plate 14 and the third connecting rod 13 is further arranged between the joint plate 14 and the third connecting rod 13; the seat body 3 is mounted on the left and right joint plates 14 of the seat body.
The hinge points among the first link 11, the second link 12, the third link 13 and the joint plate 14 may be direct hinge or indirect hinge; the first elastic member 18 may be a spring or a high stretch fiber rope or the like. When the locking rod unit is suspended in the U-shaped clamping groove 141, a certain rotational force is applied to the joint plate 14 of the seat body, namely, the backrest 32 of the seat body 3 is reciprocally rotated back and forth, so that the third connecting rod 13 and the joint plate 14 relatively rotate around the hinge point, the rotational angle is limited by the distance between the two inner side walls 1412 of the U-shaped clamping groove 141, and the distance can be designed according to the required shaking amplitude of the seat body; further, the first elastic member 18 can provide elastic buffering and resetting functions for shaking, so that the seat body can realize comfortable and safe shaking, the comfort of a user is improved, and meanwhile, a user can save more labor.
Further, the bottom of the U-shaped slot 141 has a plurality of parallel locking positions 1411 for limiting the locking bar unit, and a space for the locking bar unit to move back and forth is provided between two inner side walls 1412 of the U-shaped slot 141 (refer to fig. 3). The lock rod units can be clamped at different clamping positions 1411 by arranging a plurality of clamping positions 1411, so that the seat body 3 matched with the seat body can be kept at different angles, and the comfort of a user can be improved by adjusting according to the condition of the user.
Preferably, the third link 13 has a sliding slot 131 along a length direction, and the locking bar unit includes a first locking bar 15 with two ends respectively engaged in the left and right groups of sliding slots 131, a second elastic member 16 driving the first locking bar 15 to be clamped into the bottom of the U-shaped clamping slot 141, and a handle unit 17 pulling the first locking bar 15 reversely and suspending the first locking bar 15 in the U-shaped clamping slot 141. The second elastic member 16 may be a spring or a high elastic cord; the first lock rod 15 slides along the third connecting rod 13 under the drive of the second elastic piece 16, when the first lock rod 15 is clamped into the clamping position 1411 at the bottom of the U-shaped clamping groove 141, the third connecting rod 13 and the joint plate 14 are fixed and cannot rotate, the bracket group 1 of the seat body becomes a stable triangle structure, and at the moment, the seat body is in a normal use state which can not be shaken, namely, the use state of the conventional products in the market. The handle unit 17 is used for overcoming the elasticity of the second elastic element 16 to pull the first lock rod 15 away from the clamping position 1411 of the U-shaped clamping groove 141, when the handle unit 17 pulls the first lock rod 15 to be suspended but not completely separated from the U-shaped clamping groove 141 (i.e. beyond the highest point of the side wall of the U-shaped clamping groove 141), the relative position of the first lock rod 15 and the third connecting rod 13 is fixed through the handle, at this time, the first lock rod 15 is in a movable state and can swing between the two inner side walls 1412 of the U-shaped clamping groove 141, namely, the third connecting rod 13 and the joint plate 14 are in an unstable hinged state, but the rotation range is limited by the inner width of the U-shaped clamping groove 141, and the rocking chair with stable seat body can be realized. The handle fixing mode can be fixed at a set position by a hook or a bolt, and the handle fixing mode can be other modes.
Preferably, the handle unit 17 includes a U-shaped second locking bar 171 rotatably connected between the left and right joint plates 14 at both ends, a handle 173 having a circular groove 172 and movably limiting the first locking bar 15 and the second locking bar 171 in the circular groove 172, and a cam 174 radially abutting the second locking bar 171 and having a radius not exceeding the depth of the U-shaped clamping groove 141 on the first locking bar 15, wherein when the handle 173 is pressed down, the second locking bar 171 can pass back over the vertex of the cam 174 and is clamped between the cam 174 and the inner wall of the circular groove 172, and simultaneously the first locking bar 15 is separated from the bottom of the U-shaped clamping groove 141. When the first lock rod 15 is clamped into the clamping position 1411 of the U-shaped clamping groove 141, that is, when the first lock rod 15 is closest to the bottom surface of the U-shaped clamping groove 141, the second lock rod 171 is positioned at the front side of the cam 174, and the cam 174 does not apply force to the second lock rod 171 because of the clearance space in the return groove 172; when the handle 173 is pushed down, the cam 174 acts as a fulcrum, and the second lock lever 171 is moved by the lever to the rear side of the cam 174 beyond the apex of the cam 174 and is limited between the rear side of the cam 174 and the inner wall of the return groove 172, at this time, the radius of the cam 174 causes the second lock lever 171 to be lifted up by a certain height, i.e., a certain distance is lifted up between the knuckle plate 14 connected to the second lock lever 171 and the third link 13 relatively fixed to the handle unit 17, thereby suspending the first lock lever 15.
Preferably, a transverse supporting rod 19 is further disposed between the left and right bracket sets 1, and the supporting rod 19 can limit the pressing position of the handle 173. The support bar 19 is typically provided at the hinge point of the first link 11 and the third link 13, with both ends typically being available for mounting the wheels 33 of the seat. The support rod 19 limits the handle 173, so as to prevent the second lock rod 171 from moving downward beyond the cam 174 due to the overlarge rotation angle of the handle 173, and the first lock rod 15 returns to the clamping position 1411 of the U-shaped clamping groove 141 again to be locked under the drive of the second elastic member 16.
Preferably, the handle 173 is provided with a pedal 1731, and the first lock lever 15 and the second lock lever 171 are simultaneously pulled to descend (the second lock lever 171 is inclined backward at a certain angle (refer to fig. 5) when the first lock lever 15 is in a suspended state) by applying downward pressure to the pedal 1731, and the second lock lever 171 can be pulled to be parallel to the third link 13 (refer to fig. 6) when the pedal 1731 is pulled down, so that the first lock lever 15 can be separated from the U-shaped slot 141. After the first lock rod 15 is completely separated from the U-shaped clamping groove 141 by the pressure applied to the pedal 1731, the seat body can be folded by the unstable quadrilateral structure composed of the first connecting rod 11, the second connecting rod 12, the third connecting rod 13 and the joint plate 14. Is convenient to store or carry.
Further, the third link 13 has a damper spring structure therein. The damper springs can further improve riding comfort.
Further, the base is further hinged with a brake lever 21 and an L-shaped brake pad, and the brake lever 21 and the brake pad form a lever structure, so that the brake pad abuts against or leaves the wheel 33 when the brake lever 21 is pulled up and down. The brake lever 21 and the brake pad can be of an integrated structure, the pivot point of the brake lever is a hinge point with the seat body, and the impact force during braking can be relieved by adopting a multi-link linkage structure.
Further, the front ends of both sides of the seat plate 31 are hinged with a fourth link 34, and the other end of the fourth link 34 is hinged with the front end of the first link 11. The first connecting rod 11, the third connecting rod 13, the fourth connecting rod 34, the joint plate 14 and the seat body 3 are all movable hinge points, so that the folding of the wheelchair can be realized.
The above description should not be taken as limiting the scope of the invention, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present invention still fall within the scope of the technical solutions of the present invention.
Claims (5)
1. Wheelchair with rocking chair function, including having the seat body of back and bedplate to and be used for supporting the pedestal of seat body, its characterized in that: the seat body comprises a left-right symmetrical bracket group, wherein the bracket group comprises a longitudinal first connecting rod, a second connecting rod hinged at the front end of the first connecting rod, and a third connecting rod hinged at the rear end of the first connecting rod; the bracket group further comprises a joint plate, and the other ends of the second connecting rod and the third connecting rod are hinged with the joint plate, so that the first connecting rod, the second connecting rod, the third connecting rod and the joint plate form an unstable quadrilateral structure with four hinge points; the seat body further comprises a locking device arranged between the joint plate and the third connecting rod, the locking device comprises a U-shaped clamping groove arranged on the joint plate and a lock rod unit arranged on the third connecting rod, the lock rod unit can be limited at least two different positions of the third connecting rod, the lock rod unit is respectively clamped and fixed at the bottom of the U-shaped clamping groove and suspended in the U-shaped clamping groove, and a first elastic piece for buffering the relative rotation of the joint plate and the third connecting rod is further arranged between the joint plate and the third connecting rod; the seat body is arranged on the left joint plate and the right joint plate of the seat body; the third connecting rod is provided with a sliding groove along the length direction, the lock rod unit comprises a first lock rod, a second elastic piece and a handle unit, the two ends of the first lock rod are respectively matched with the left and right groups of the sliding grooves, the second elastic piece drives the first lock rod to be clamped into the bottom of the U-shaped clamping groove, and the handle unit is used for pulling the first lock rod reversely and suspending the first lock rod in the U-shaped clamping groove; the handle unit comprises a U-shaped second lock rod with two ends rotatably connected between the left joint plate and the right joint plate, and a handle which is provided with a return groove and movably limits the first lock rod and the second lock rod in the return groove, wherein the first lock rod is provided with a cam which radially abuts against the second lock rod and has a radius not exceeding the depth of the U-shaped clamping groove, and when the handle is pressed down, the second lock rod can pass through the top point of the cam backwards and is clamped between the cam and the inner wall of the return groove, and meanwhile, the first lock rod is separated from the bottom of the U-shaped clamping groove; a transverse supporting rod is further arranged between the left bracket group and the right bracket group, and the supporting rod can limit the pressing position of the handle; the handle is provided with a pedal, and the first lock rod can be separated from the U-shaped clamping groove by applying downward pressure to the pedal.
2. A wheelchair with rocking chair function according to claim 1, characterized in that: the bottom of the U-shaped clamping groove is provided with a plurality of parallel clamping positions for limiting the lock rod unit, and a spacing space for the lock rod unit to move back and forth is arranged between the two inner side walls of the U-shaped clamping groove.
3. A wheelchair with rocking chair function according to claim 1, characterized in that: and a damping spring structure is arranged in the third connecting rod.
4. A wheelchair with rocking chair function according to claim 1, characterized in that: the base is also hinged with a brake rod and an L-shaped brake pad, and the brake rod and the brake pad form a lever structure, so that the brake pad is abutted against or separated from the wheel when the brake rod is pulled up and down.
5. A wheelchair with rocking chair function according to claim 1, characterized in that: the front ends of the two sides of the seat board are hinged with a fourth connecting rod, and the other end of the fourth connecting rod is hinged with the front end of the first connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910747260.8A CN110403775B (en) | 2019-08-14 | 2019-08-14 | Wheelchair with rocking chair function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910747260.8A CN110403775B (en) | 2019-08-14 | 2019-08-14 | Wheelchair with rocking chair function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110403775A CN110403775A (en) | 2019-11-05 |
| CN110403775B true CN110403775B (en) | 2024-09-10 |
Family
ID=68367313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910747260.8A Active CN110403775B (en) | 2019-08-14 | 2019-08-14 | Wheelchair with rocking chair function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110403775B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4707026A (en) * | 1986-06-02 | 1987-11-17 | Johansson Paul J | Mobile rocking wheelchair with position locking means |
| CN210991244U (en) * | 2019-08-14 | 2020-07-14 | 东莞乐缘塑胶五金制品科技有限公司 | Wheelchair with rocking chair function |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3848924A (en) * | 1973-09-20 | 1974-11-19 | La Z Boy Chair Co | Mobile chair base having locking means |
| US4125269A (en) * | 1977-03-21 | 1978-11-14 | Kiel Louise A | Recliner-rocker geriatric wheel chair |
| US5897462A (en) * | 1997-04-18 | 1999-04-27 | St. Germain; Robert J. | Exercise apparatus |
| JP4341885B2 (en) * | 2002-11-06 | 2009-10-14 | 株式会社いうら | Swing mechanism of seat in a reclining wheelchair |
| CN201049027Y (en) * | 2007-05-08 | 2008-04-23 | 王翠霞 | Multifunctional wheelchair |
| CN205729651U (en) * | 2016-06-08 | 2016-11-30 | 巢湖学院 | A kind of multifunctional wheelchair |
| CN106691719B (en) * | 2016-08-24 | 2018-07-24 | 河南神行保健科技股份有限公司 | A kind of electric wheelchair with full attitude regulation |
-
2019
- 2019-08-14 CN CN201910747260.8A patent/CN110403775B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4707026A (en) * | 1986-06-02 | 1987-11-17 | Johansson Paul J | Mobile rocking wheelchair with position locking means |
| CN210991244U (en) * | 2019-08-14 | 2020-07-14 | 东莞乐缘塑胶五金制品科技有限公司 | Wheelchair with rocking chair function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110403775A (en) | 2019-11-05 |
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