CN115339552A - Backrest folding structure - Google Patents
Backrest folding structure Download PDFInfo
- Publication number
- CN115339552A CN115339552A CN202210773063.5A CN202210773063A CN115339552A CN 115339552 A CN115339552 A CN 115339552A CN 202210773063 A CN202210773063 A CN 202210773063A CN 115339552 A CN115339552 A CN 115339552A
- Authority
- CN
- China
- Prior art keywords
- backrest
- contact surface
- pushing
- movable
- folding structure
- 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.)
- Pending
Links
- 230000009471 action Effects 0.000 abstract description 6
- 230000007306 turnover Effects 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J1/00—Saddles or other seats for cycles; Arrangement thereof; Component parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J1/00—Saddles or other seats for cycles; Arrangement thereof; Component parts
- B62J1/10—Internal adjustment of saddles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K15/00—Collapsible or foldable cycles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention relates to a seat of a foldable walking tool, in particular to a backrest folding structure for the foldable walking tool. A backrest folding structure is characterized by comprising a first member and a second member which are arranged at the rotary fixing position of a backrest and a seat plate, wherein one of the first member and the second member is fixed with the backrest, the other of the first member and the second member is fixed with the seat plate, the first member is fixed with one end of a movable part, the other end of the movable part extends towards the second member, the end face of the second member is provided with a first pushing surface used for being in contact with the first member, and the first pushing surface is an inclined surface or an arc surface. The invention has the advantages that the backrest is not easy to be folded by mistake under the action of external force, the use is convenient, and the cost is lower.
Description
Technical Field
The invention relates to a seat of a foldable walking tool, in particular to a backrest folding structure for the foldable walking tool.
Background
Chinese patent publication No. CN200942835Y discloses a folding scooter, which comprises a cushion and a backrest, wherein a foldable frame is arranged at the lower side of the cushion, and the backrest is hinged at the rear end of the cushion. In order to reduce the production cost, the cushion and the backrest are made of plastics, and the backrest is light and is not provided with a locking mechanism or a safety mechanism at the hinged part of the backrest and the cushion, so that the backrest is very easy to turn over and fold on the cushion under the action of wind, and is inconvenient to use.
Disclosure of Invention
The invention aims to provide a backrest folding structure which is not easy to fold by mistake under the action of external force, is convenient to use and has lower cost.
In order to achieve the purpose, the invention adopts the following technical scheme: a backrest folding structure comprises a first member and a second member which are arranged at the rotary fixing position of a backrest and a seat plate, wherein one of the first member and the second member is fixed with the backrest, the other of the first member and the second member is fixed with the seat plate, the first member is fixed with one end of a movable part, the other end of the movable part extends towards the second member, the end surface of the second member is provided with a first pushing surface which is used for contacting with the first member, the first pushing surface is an inclined surface, the plane of the first pushing surface is inclined relative to the rotary fixing axis of the rotary fixing position, or the first pushing surface is an arc surface, and an opening formed by the arc surface is arranged forwards or backwards; when the backrest and the seat plate are folded, the first component is positioned on the side of the second component, and the movable part is contacted with the side surface of the second component; when the backrest and the seat plate are unfolded, the movable part is positioned right in front of or right behind the first pushing surface of the second component.
When a user folds the backrest, the backrest is stressed to turn so as to enable the movable part at the first component to be in contact with the second component, at the moment, the first pushing surface of the second component is in contact with the first contact surface firstly, because the first pushing surface is an arc surface or an inclined surface, one end of the movable part close to the second component is not fixed with the first component, the end part of the movable part can move laterally, along with the continuous movement of the second component, the movable part can move to the side of the second component, and therefore the front side or the rear side of the second component is free of barriers, and the whole folding of the backrest is achieved. The backrest is turned by pushing or squeezing the movable part away at first and providing larger force to the backrest, so that the backrest is prevented from being easily blown by wind due to lighter backrest and is not easy to fold due to external force; the folding of the backrest can be realized only by overcoming the resistance provided by the movable part, and the user only needs to turn over the backrest, so that the backrest can be folded very conveniently; the invention only adds the first component and the second component, and has less parts and lower cost. Wherein, the first part and the movable part can be made of plastic and integrally formed.
Preferably, the end face of the movable portion, which is used for contacting with the first pushing face, is a first contact face, the movable portion is provided with a linkage protrusion extending towards the side, the end face of the linkage protrusion, which is used for contacting with the first pushing face, is a second contact face, the second contact face is far away from the first pushing face of the second component compared with the first contact face, and when the backrest and the seat plate are folded, the side face of the linkage protrusion of the movable portion contacts with the side face of the second component.
When the user turns the backrest, the first pushing surface of the second component contacts with the first contact surface firstly, after the movable part is pushed to move towards the side, the first pushing surface of the second component contacts with the second contact surface again, and the movable part moves to the side of the second component completely along with the continuous turning of the backrest. The backrest turnover device has the advantages that the linkage bulges are arranged to play a certain buffering role, so that safety accidents caused by too fast turnover of the backrest when a user turns the backrest with a large force are avoided; meanwhile, the end part of the movable part can be prevented from being excessively displaced at one time, so that the service life of the movable part is prolonged.
Preferably, the first contact surface is an inclined surface, and a plane on which the first contact surface is located is inclined with respect to a rotation fixing axis of the rotation fixing place. The first contact surface is an inclined surface, so that the force required by the end part of the movable part to move towards the side is reduced, and the phenomenon of blocking in the process of folding the backrest is avoided.
Preferably, the second contact surface is an inclined surface, and an inclination angle of the second contact surface is larger than an inclination angle of the first contact surface. Namely, the included angle formed between the second contact surface and the first pushing surface is larger than the included angle formed between the first contact surface and the first pushing surface. Above-mentioned setting is so that the first promotion face of second part is changeed and is removed to the bellied side of linkage from the preceding rear side of second contact surface, can play certain buffering effect in, has great card pause when avoiding the back to fold the action, can improve use comfort and stability.
Preferably, the second member further includes a second pushing surface for contacting a second contact surface, the second pushing surface is closer to the first contact surface than the first pushing surface, and a third contact surface for contacting a side surface of the movable portion is connected between the second pushing surface and the first pushing surface. The second pushing surface is matched with the second contact surface, and the third contact surface is matched with the movable part and the side surface of the linkage protrusion, so that the area of the lateral contact surface of the second component and the movable part is increased, the movable part is conveniently pushed to move towards the lateral side, and the stability of the seat provided by the invention is improved when the seat is used.
Preferably, the movable portion is arc-shaped, and an arc opening formed by the movable portion faces the rotation fixing position and takes the rotation fixing axis as the center of the arc opening. When the backrest is folded, the second component can be always contacted with the movable part because the movable part is arc-shaped, thereby improving the stability of the folding backrest when in use.
Preferably, the movable portion is formed with a bent portion at a position away from the end portion, and the opening direction of the bent portion is opposite to the moving direction of the movable portion pushed by the second member. The arrangement is such that the movable portion is not deflected by taking the joint of the movable portion and the first member as a center after being subjected to thrust, and can be deflected at the bent portion.
Preferably, the end of the movable part is provided with a relief groove with a lateral opening, and the opening direction of the relief groove is the same as the moving direction of the movable part pushed by the second component. The above arrangement makes the end of the movable part lighter and also facilitates the moulding of the first and second contact surfaces, facilitating the first part to be made of plastic.
Preferably, the backrest or the seat plate is provided with a plurality of limiting grooves, the first part is provided with a plurality of limiting protrusions extending into the limiting grooves, and the width of each limiting protrusion is smaller than that of each limiting groove. Through setting up spacing groove and spacing arch to confirm first part setting position, guarantee the effective contact of second part and movable part.
Preferably, the first member is provided with a protection portion located right in front of or right behind an end portion of the movable portion, the protection portion is closer to the second member than the movable portion, and a gap is provided between the protection portion and the movable portion. The protection part is arranged to protect the second component and the movable part to a certain degree so as to prevent foreign matters from entering between the first component and the second component.
The invention has the advantages that the backrest is not easy to be folded by mistake under the action of external force, the use is convenient, and the cost is lower.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the hinge of the back rest and the seat plate of the present invention;
FIG. 3 is a schematic view of the construction of a first component of the present invention;
fig. 4 is a schematic view of the backrest of the present invention in a second section.
Detailed Description
The invention is further described below with reference to the figures and specific embodiments.
As shown in fig. 1, 3 and 4, the backrest folding structure disclosed in this embodiment includes a first member 3 and a second member 4 disposed at the rotation fixing position of the backrest 1 and the seat plate 2, the first member 3 is fixed on the seat plate 2 by a fastener, and the second member 4 is integrally formed with the backrest 1. The first member 3 is fixed to one end of the movable portion 31, and the other end of the movable portion 31 extends rearward and toward the second member 4 side. The left side and the right side of the lower end of the backrest 1 are respectively provided with a hinge part 11 which extends forwards and is used for being rotationally fixed with the seat plate 1, and the second component 4 is arranged at the position of the hinge part 11 deviating from the rotation axis of the backrest 1 and the seat plate 2.
As shown in fig. 2, 3 and 4, the front end face of the second member 4 has a first pushing surface 41 for contacting the first member 3, the first pushing surface 41 is a slope, and the plane of the first pushing surface 41 is inclined with respect to the rotation fixing axis of the rotation fixing place. When the backrest 1 and the seat plate 2 are folded, the first component 3 is positioned at the side of the second component 4, and the movable part 31 is contacted with the side surface of the second component 4; when the backrest 1 and the seat plate 2 are unfolded, the movable portion 31 is located right in front of the first pushing surface 41 of the second member 4.
The end face of the movable portion 31 for contacting the first pushing surface 41 is a first contact face 311, the movable portion 31 has an interlocking projection 312 extending laterally, the end face of the interlocking projection 312 for contacting the first pushing surface 41 is a second contact face 313, the second contact face 313 is farther from the first pushing surface 41 of the second member 4 than the first contact face 311, and when the backrest 1 and the seat plate 2 are folded, the side face of the interlocking projection 312 of the movable portion 31 contacts the side face of the second member 4. The first contact surface 311 is an inclined surface, the plane of the first contact surface 311 is inclined with respect to the axis of the rotation fixture at the rotation fixture, the second contact surface 313 is an inclined surface, and the inclination angle of the second contact surface 313 is greater than that of the first contact surface 311.
The second member 4 further has a second pushing surface 42 for contacting the second contact surface 313, the second pushing surface 42 is closer to the first contact surface 311 than the first pushing surface 41 when the backrest 1 is unfolded, and a third contact surface 43 for contacting the side surface of the movable portion 31 is connected between the second pushing surface 42 and the first pushing surface 41.
As shown in fig. 2 and 3, the first member 3 is circular, the movable portion 31 extends backward along the circumferential direction of the outer edge of the first member 3 to make the movable portion 31 arc-shaped, and the arc-shaped opening formed by the movable portion 31 faces the rotation fixing position and takes the rotation fixing axis as the center of the arc-shaped opening. The movable portion 31 is formed with a bent portion 32 at a position deviated from the end portion, and the opening direction of the bent portion 32 is opposite to the moving direction of the movable portion 31 pushed by the second member 4. The end of the movable part 31 is provided with an abdicating groove 33 with a side opening, and the opening direction of the abdicating groove 33 is the same as the moving direction of the movable part 31 pushed by the second component 4. The first member 3 is provided with a protective portion 30 located right behind the end of the movable portion 31, the protective portion 30 is closer to the second member 4 than the movable portion 31, and a gap 301 is provided between the protective portion 30 and the movable portion 31.
The seat 2 department is equipped with a plurality of open-ended spacing grooves 21 that make progress, and a plurality of spacing grooves 21 set up along the fore-and-aft direction interval, and first part 3 is equipped with a plurality of spacing archs 34 that stretch into the spacing inslot, and a plurality of 34 intervals side by side set up in first part 3 with one side, and spacing protruding 34 width is less than the width of spacing groove 21. In this embodiment, the first member 3 has a mounting hole 35 in the middle, and a fastener passes through the mounting hole 35 and fixes the first member 3 to the seat plate 2, such that the mounting hole 35 is coaxial with the rotation fixing axis; the position of the movable part can be reasonably adjusted by rotating the first component 3, the limiting protrusion 34 moves in the limiting groove 21, and finally the first component 3 is fixed through the fastening piece.
The invention has the advantages that the backrest is not easy to be folded by mistake under the action of external force, the use is convenient, and the cost is lower.
Claims (10)
1. A backrest folding structure is characterized by comprising a first member and a second member which are arranged at the position where a backrest and a seat plate are rotationally fixed, wherein one of the first member and the second member is fixed with the backrest, the other of the first member and the second member is fixed with the seat plate, the first member is fixed with one end of a movable part, the other end of the movable part extends towards the second member, the end surface of the second member is provided with a first pushing surface used for being in contact with the first member, the first pushing surface is an inclined surface, the plane of the first pushing surface is obliquely arranged relative to the axis of the rotationally fixed position, or the first pushing surface is an arc surface, and an opening formed by the arc surface is arranged forwards or backwards;
when the backrest and the seat plate are folded, the first component is positioned on the side of the second component, and the movable part is contacted with the side surface of the second component;
when the backrest and the seat plate are unfolded, the movable part is positioned right in front of or right behind the first pushing surface of the second component.
2. The backrest folding structure according to claim 1, wherein the end surface of the movable portion for contacting with the first pushing surface is a first contact surface, the movable portion has a linking protrusion extending laterally, the end surface of the linking protrusion for contacting with the first pushing surface is a second contact surface, the second contact surface is farther from the first pushing surface of the second member than the first contact surface, and when the backrest and the seat board are folded, the side surface of the linking protrusion of the movable portion contacts with the side surface of the second member.
3. The back-rest fold structure of claim 2, wherein the first contact surface is a sloped surface, and the plane of the first contact surface is disposed obliquely to the axis of the rotational fixation.
4. The backrest folding structure as claimed in claim 3, wherein said second contact surface is a slope, and an inclination angle of said second contact surface is larger than that of said first contact surface.
5. The back-rest folding structure according to claim 2, wherein the second member further has a second pushing surface for contacting the second contact surface, the second pushing surface being closer to the first contact surface than the first pushing surface, and a third contact surface for contacting the movable side surface is connected between the second pushing surface and the first pushing surface.
6. The backrest-folding structure as claimed in claim 1, wherein the movable portion is arc-shaped, and the arc-shaped opening formed by the movable portion faces the rotation-fixing portion and takes the rotation-fixing axis as the center of the arc-shaped opening.
7. The backrest-folding structure as claimed in claim 1 or 6, wherein the movable portion is formed with a bend at a position away from the end portion, and the bend is formed to have an opening direction opposite to the moving direction of the movable portion urged by the second member.
8. The backrest folding structure as claimed in claim 1, wherein the end of the movable portion is provided with a laterally opened receding groove, and the direction of the opening of the receding groove is the same as the moving direction of the movable portion pushed by the second member.
9. The backrest folding structure as claimed in claim 1, wherein the backrest or the seat plate has a plurality of limiting grooves, the first member has a plurality of limiting protrusions extending into the limiting grooves, and the width of the limiting protrusions is smaller than the width of the limiting grooves.
10. The backrest-folding structure as claimed in claim 1, wherein the first member is provided with a protection member located right in front of or right behind an end of the movable member, the protection member is closer to the second member than the movable member, and a gap is provided between the protection member and the movable member.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210773063.5A CN115339552A (en) | 2022-06-30 | 2022-06-30 | Backrest folding structure |
| PCT/CN2023/103011 WO2024002121A1 (en) | 2022-06-30 | 2023-06-28 | Backrest folding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210773063.5A CN115339552A (en) | 2022-06-30 | 2022-06-30 | Backrest folding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115339552A true CN115339552A (en) | 2022-11-15 |
Family
ID=83949055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210773063.5A Pending CN115339552A (en) | 2022-06-30 | 2022-06-30 | Backrest folding structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115339552A (en) |
| WO (1) | WO2024002121A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024002121A1 (en) * | 2022-06-30 | 2024-01-04 | 浙江联宜电机有限公司 | Backrest folding structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5997088A (en) * | 1996-11-16 | 1999-12-07 | Bayerische Motoren Werke Aktiengesellschaft | Vehicle seat |
| KR200250514Y1 (en) * | 2001-06-08 | 2001-10-19 | 정관영 | A foldable chair without legs |
| US20050242547A1 (en) * | 2004-04-30 | 2005-11-03 | Wonderland Nurserygoods Co., Ltd. | Stroller frame foldable in two directions |
| US20080258524A1 (en) * | 2007-04-20 | 2008-10-23 | Cosco Management, Inc. | Juvenile vehicle seat with backward-folding backrest |
| CN102205801A (en) * | 2011-05-19 | 2011-10-05 | 上海延锋江森座椅有限公司 | Turnover and foldable seat |
| US20140062146A1 (en) * | 2012-08-31 | 2014-03-06 | Robert E. Haut | Foldable stroller capable of folding a seatback automatically |
| US20160016629A1 (en) * | 2013-04-01 | 2016-01-21 | Jianmin Wang | Draw-bar box type portable folding electro-tricycle with folding chair function |
| CN109177832A (en) * | 2018-08-28 | 2019-01-11 | 重庆长安汽车股份有限公司 | A kind of rumble seat |
| CN110667679A (en) * | 2019-09-20 | 2020-01-10 | 东莞金旺儿童用品有限公司 | Seat frame assembly, stroller and folding method thereof |
| CN211252730U (en) * | 2019-10-22 | 2020-08-14 | 许华胜 | Baby carriage |
| CN212921673U (en) * | 2020-05-12 | 2021-04-09 | 绍兴上虞日星五金制品有限公司 | Foldable linked seat for children's carriage |
| CN113230049A (en) * | 2021-03-29 | 2021-08-10 | 浙江英洛华康复器材有限公司 | Folding wheelchair |
| CN114348158A (en) * | 2021-12-31 | 2022-04-15 | 东阳市联宜机电有限公司 | Scooter |
| CN114537571A (en) * | 2022-04-14 | 2022-05-27 | 广东银狐医疗科技股份有限公司 | Backrest and armrest linkage folding seat and scooter |
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| FR2920012B1 (en) * | 2007-08-17 | 2010-03-26 | Peugeot Citroen Automobiles Sa | ADJUSTABLE AND RETRACTABLE SEAT IN TWO POSITIONS AND A METHOD OF ESCAMOTATION |
| CN110775137A (en) * | 2019-10-12 | 2020-02-11 | 好孩子儿童用品有限公司 | Children's seat pocket and children's shallow |
| CN110682958A (en) * | 2019-10-22 | 2020-01-14 | 许华胜 | Baby carriage |
| CN110712672A (en) * | 2019-10-22 | 2020-01-21 | 许华胜 | Child's seat subassembly |
| CN215423712U (en) * | 2021-08-03 | 2022-01-07 | 安吉县盛信办公家具有限公司 | Seat with foldable backrest |
| CN215245076U (en) * | 2021-08-06 | 2021-12-21 | 珠海阳光儿童用品有限公司 | Seat basket |
| CN115339552A (en) * | 2022-06-30 | 2022-11-15 | 东阳市联宜机电有限公司 | Backrest folding structure |
| CN217864470U (en) * | 2022-06-30 | 2022-11-22 | 东阳市联宜机电有限公司 | Scooter with foldable seat |
| CN115258018A (en) * | 2022-07-01 | 2022-11-01 | 东阳市联宜机电有限公司 | Folding seat and folding tool of riding instead of walk |
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2022
- 2022-06-30 CN CN202210773063.5A patent/CN115339552A/en active Pending
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2023
- 2023-06-28 WO PCT/CN2023/103011 patent/WO2024002121A1/en unknown
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5997088A (en) * | 1996-11-16 | 1999-12-07 | Bayerische Motoren Werke Aktiengesellschaft | Vehicle seat |
| KR200250514Y1 (en) * | 2001-06-08 | 2001-10-19 | 정관영 | A foldable chair without legs |
| US20050242547A1 (en) * | 2004-04-30 | 2005-11-03 | Wonderland Nurserygoods Co., Ltd. | Stroller frame foldable in two directions |
| US20080258524A1 (en) * | 2007-04-20 | 2008-10-23 | Cosco Management, Inc. | Juvenile vehicle seat with backward-folding backrest |
| CN102205801A (en) * | 2011-05-19 | 2011-10-05 | 上海延锋江森座椅有限公司 | Turnover and foldable seat |
| US20140062146A1 (en) * | 2012-08-31 | 2014-03-06 | Robert E. Haut | Foldable stroller capable of folding a seatback automatically |
| US20160016629A1 (en) * | 2013-04-01 | 2016-01-21 | Jianmin Wang | Draw-bar box type portable folding electro-tricycle with folding chair function |
| CN109177832A (en) * | 2018-08-28 | 2019-01-11 | 重庆长安汽车股份有限公司 | A kind of rumble seat |
| CN110667679A (en) * | 2019-09-20 | 2020-01-10 | 东莞金旺儿童用品有限公司 | Seat frame assembly, stroller and folding method thereof |
| CN211252730U (en) * | 2019-10-22 | 2020-08-14 | 许华胜 | Baby carriage |
| CN212921673U (en) * | 2020-05-12 | 2021-04-09 | 绍兴上虞日星五金制品有限公司 | Foldable linked seat for children's carriage |
| CN113230049A (en) * | 2021-03-29 | 2021-08-10 | 浙江英洛华康复器材有限公司 | Folding wheelchair |
| CN114348158A (en) * | 2021-12-31 | 2022-04-15 | 东阳市联宜机电有限公司 | Scooter |
| CN114537571A (en) * | 2022-04-14 | 2022-05-27 | 广东银狐医疗科技股份有限公司 | Backrest and armrest linkage folding seat and scooter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024002121A1 (en) * | 2022-06-30 | 2024-01-04 | 浙江联宜电机有限公司 | Backrest folding structure |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024002121A1 (en) | 2024-01-04 |
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