CN217771853U - Chair back lifting mechanism - Google Patents
Chair back lifting mechanism Download PDFInfo
- Publication number
- CN217771853U CN217771853U CN202220961403.2U CN202220961403U CN217771853U CN 217771853 U CN217771853 U CN 217771853U CN 202220961403 U CN202220961403 U CN 202220961403U CN 217771853 U CN217771853 U CN 217771853U
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- adjusting
- groove
- chair back
- lifting
- frame
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- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 230000005489 elastic deformation Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The utility model discloses a chair back lifting mechanism, which comprises a supporting frame and a chair back frame which can move up and down along the supporting frame; the support frame is provided with an adjusting groove extending up and down, and one side edge of the adjusting groove is connected with a plurality of gear grooves which extend out of the outer side of the adjusting groove and incline downwards; the chair back frame is rotationally connected with a lifting adjusting piece which can swing left and right, and the lifting adjusting piece is provided with an adjusting part inserted in the adjusting groove or the gear groove; the chair back lifting frame is provided with an elastic reset piece for driving the adjusting part to slide into the gear groove from the adjusting groove; the lifting adjusting piece is provided with a locking structure, and when the adjusting part slides downwards from the top end of the adjusting groove and upwards from the bottom end of the adjusting groove, the locking structure is respectively used for locking the adjusting part to prevent the adjusting part from swinging left and right and unlocking the adjusting part to allow the adjusting part to swing left and right. The beneficial effects of the utility model reside in that, the structure is retrencied more, and the fault rate is lower.
Description
Technical Field
The utility model relates to a back of chair elevating system mainly uses the technical field at office chair.
Background
The back of the chair is an important part for providing the supporting comfort level of the human body in a sitting posture state, and at present, in order to effectively provide wider adaptability, the back of the chair is often configured to be adjustable in lifting mode so as to be suitable for different people to serve as the upper body height of the chair. The existing lifting adjusting mechanism generally adopts a friction fit or salient point fit mode, so that the adjustment of the chair back forms gear adjustment. The two gear adjusting modes are usually triggered by a button to realize adjustment, but the structure is not intuitive in operation, short in service life and poor in stability.
For example, patent application with publication number CN209573966U discloses a quick return structure of a lifting chair back: the chair back lifting structure realizes the gear adjustment of chair back lifting through the contact of the buckle part of the buckle and the gear of the lifting gear strip and the return action of the elastically compressed torsion spring on the buckle; through the highest gear of the lifting gear strip, the ring-shaped spring of the clamp spring and the opening width of the groove hole slightly smaller than the diameter of the ring-shaped spring, the ring-shaped spring is buckled into the groove hole when the chair back lifting structure is lifted to the highest position, so that the buckling part of the buckle is not contacted with the gear of the lifting gear strip, and the lifting chair back can integrally descend; the separation of the ring-shaped spring and the slotted hole and the return of the buckle are realized through the contact of the slope contact and the slope bevel edge; however, the parts of the technical scheme are too complex, the clamp spring and the torsion spring are arranged, the clamp spring structure also needs to be specially processed, and the installation and processing costs are high; when the chair is used, the buckle is clamped in the gear strip, the chair back bears most of load of a user, and the structural strength cannot be guaranteed; is easy to damage after long-term use.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a back of chair elevating system, the structure is retrencied more, and the fault rate is lower.
The utility model discloses a realize through following technical scheme.
A chair back lifting mechanism comprises a supporting frame and a chair back frame which can move up and down along the supporting frame; the support frame is provided with an adjusting groove extending up and down, and one side edge of the adjusting groove is connected with a plurality of gear grooves which extend out of the outer side of the adjusting groove and incline downwards; the chair back frame is rotationally connected with a lifting adjusting piece which can swing left and right, and the lifting adjusting piece is provided with an adjusting part inserted in the adjusting groove or the gear groove; the chair back lifting structure is provided with an elastic reset piece for driving the adjusting part to slide into the gear groove from the adjusting groove; the lifting adjusting piece is provided with a locking structure, and when the adjusting part slides downwards from the top end of the adjusting groove and upwards from the bottom end of the adjusting groove, the locking structure is respectively used for locking the adjusting part to prevent the adjusting part from swinging left and right and unlocking the adjusting part to allow the adjusting part to swing left and right.
As a further improvement of the utility model, the locking structure comprises a sliding plate which can move up and down along the supporting frame, and the sliding plate is provided with a transverse groove and a longitudinal groove; the transverse groove allows the adjusting part to pass through and swing left and right, so that the adjusting part is in an unlocking state; the longitudinal groove is connected to the bottom edge of the transverse groove, and when the adjusting part slides into the longitudinal groove from the transverse groove, the longitudinal groove can clamp the adjusting part to enable the adjusting part not to swing left and right, so that the adjusting part is in a locking state.
As a further improvement of the utility model, two racks extending up and down are arranged on the supporting frame; the left side and the right side of the sliding plate are respectively provided with an elastic connecting part meshed with the corresponding rack, and the elastic connecting parts can generate elastic deformation so that the sliding plate can move up and down along the supporting frame.
As a further improvement of the utility model, the top edge or the bottom edge of the sliding plate is provided with a notch; the elastic connecting part comprises a limiting part of the sliding plate from the notch to the side edge, and at least one clamping structure formed by protruding the side edge of the limiting part outwards, and the clamping structure is clamped into the tooth space of the rack.
As a further improvement, the support frame is fixedly connected with a fixing plate, and the adjusting groove, the gear groove and the rack are formed on the fixing plate.
As a further improvement of the utility model, the chair back frame is provided with a through hole which is communicated from front to back; the lifting adjusting piece is rotatably connected to the front face of the chair back frame, the adjusting portion is formed by extending the lifting adjusting piece backwards, and the adjusting portion penetrates through the through hole, the transverse groove or the longitudinal groove and is inserted into the adjusting groove or the gear groove.
As a further improvement of the utility model, the front surface of the chair back frame is provided with a cylinder body which extends forwards; the lifting adjusting piece is provided with a lantern ring structure, and the lantern ring structure is rotatably sleeved on the column body.
As a further improvement of the utility model, the front side of the chair back frame is provided with a fence structure surrounding the lifting adjusting piece; the both ends of elasticity piece that resets support respectively on the inner wall of lift adjustment spare and rail structure.
As a further improvement of the present invention, the lifting adjusting member has a protrusion thereon, and the elastic restoring member has one end sleeved on the protrusion.
As a further improvement of the utility model, the supporting frame is provided with two longitudinal supports which are symmetrical left and right, and the chair back frame is provided with two longitudinal beams which can slide up and down along the longitudinal supports; all be equipped with adjustment tank and gear groove on two vertical supports, all be equipped with lift adjustment spare on two longerons.
The utility model has the advantages that:
the chair back lifting device provided by the invention does not need to be additionally provided with a control switch, and a user only needs to apply upward or downward pulling force to the chair back frame during adjustment to adjust the lifting, so that the operation is very convenient and practical, compared with a lifting and sliding mechanism adopted in the prior art, the whole mechanism is more simplified, and the production and processing cost is reduced.
Drawings
The preferred embodiments of the present invention will hereinafter be described in detail to facilitate an understanding of the objects and advantages of the invention, with reference to the accompanying drawings, in which:
FIG. 1 is an exploded view of a chair back lift mechanism;
FIG. 2 is a schematic structural view of a locking structure;
FIG. 3 is a schematic structural diagram of a fixing plate;
FIG. 4 is a schematic view of the elevation adjustment member;
fig. 5 is a partial structural view of the chair back frame.
Detailed Description
The invention is explained in more detail below with reference to the drawings and exemplary embodiments.
The terms upper, lower, left, right, front, rear, front, back, top, bottom and the like in the description, or which may be referred to in the specification, are defined with respect to the configurations shown in the drawings, and the words "inner" and "outer" refer to the relative concepts toward and away from the geometric center of a particular component, respectively, and thus may be changed accordingly depending on the position in which it is located and the state of use. Therefore, these and other directional terms should not be construed as limiting terms.
Referring to fig. 1-5, a back of chair elevating system, includes support frame 1, back of chair frame 4, the bottom of support frame 1 and the seat support rear end fixed connection on the chair, support frame 1 is upwards buckled after extending one section backward by the bottom, until extending to its top, back of chair frame 4 has back of chair frame for support user's back, its sliding connection is in the front of support frame 1 to can reciprocate along support frame 1, adjust its height.
The support frame 1 is provided with an adjusting groove 22 extending up and down, one side of the adjusting groove 22 is connected with a plurality of gear grooves 21, the gear grooves 21 extend out to the outer side of the adjusting groove 22 and incline downwards, and the inclination range is 40-60 degrees. The back of the chair frame 4 is provided with a lifting adjusting piece 52, the lifting adjusting piece 52 is a strip-shaped structure, one end of the lifting adjusting piece 52 is rotatably connected to the back of the chair frame 4, so that the lifting adjusting piece 52 can swing left and right, the lifting adjusting piece 52 is provided with an adjusting part 521, and the adjusting part 521 is inserted into the adjusting groove 22 or the gear groove 21. When the adjusting portion 521 is inserted into a certain position-shifting slot 21 and abuts against the end of the position-shifting slot 21, the back-rest frame 4 is fixed relative to the supporting frame 1, and when the user pulls the back-rest frame 4 upwards, the adjusting portion 521 slides from the end of the position-shifting slot 21 to the root until sliding into the adjusting slot 22, so that the back-rest frame 4 can move upwards along the supporting frame 1.
The chair back lifting structure is provided with an elastic restoring member 51 acting on the lifting adjusting member 52 for driving the adjusting part 521 to slide from the adjusting slot 22 into the gear slot 21. When the adjusting part 521 slides from the shift slot 21 of the current layer into the adjusting slot 22, the adjusting part 521 slides into the shift slot 21 of the previous layer under the action of the elastic restoring member 51, so that the backrest frame 4 can only be adjusted upwards but cannot be adjusted downwards. When a user pulls the chair back frame 4 upwards, the height of the chair back frame can be adjusted by multiple gears, and the number of the gears is consistent with the number of the gear grooves 21.
The lifting adjusting piece 52 is provided with a locking structure, and when the adjusting part 521 slides downwards from the top end of the adjusting groove 22 and upwards from the bottom end of the adjusting groove 22, the locking structure is respectively used for locking the adjusting part 521 so that the adjusting part 521 cannot swing left and right, and unlocking the adjusting part 521 to allow the adjusting part to swing left and right. Therefore, after the user adjusts the backrest frame 4 to the highest gear, the backrest frame 4 is pulled upwards to make the adjusting portion 521 slide into the adjusting slot 22 and locate at the top end of the adjusting slot 22, under the locking action of the locking structure, the adjusting portion 521 cannot be driven by the elastic reset piece 51 to be clamped into the gear slot 21, that is, the backrest frame 4 can move up and down freely, after the backrest frame 4 is pulled downwards to make the adjusting portion 521 move to the bottom end of the adjusting slot 22, under the unlocking action of the locking structure, the adjusting portion 521 recovers the ability of swinging left and right, so that the user can adjust the backrest frame 4 in multiple gears again when pulling upwards.
For the locking arrangement it comprises a slide plate 3, said slide plate 3 having a transverse slot 31 and a longitudinal slot 32. The sliding plate 3 is square and clamped between the back frame 4 and the support frame 1, and the sliding plate 3 is slidably connected to the support frame 1 and can slide up and down along the support frame 1. The transverse slot 31 allows the adjustment portion 521 to pass through and swing left and right without interfering with the sliding of the adjustment portion 521 into or out of the gear slot 21, i.e., the adjustment portion 521 is in an unlocked state when passing through the transverse slot 31. The longitudinal grooves 32 are connected to the bottom edges of the transverse grooves 31 such that the transverse grooves 31 and the longitudinal grooves 32 form an L-shaped groove. The width of the longitudinal groove 32 is slightly larger than that of the adjustment portion 521, so that when the adjustment portion 521 slides from the transverse groove 31 into the longitudinal groove 32, the longitudinal groove 32 can block the adjustment portion 521 so that it cannot swing left and right, i.e. the adjustment portion 521 is in a locked state when it is located in the longitudinal groove 32.
When the adjustment portion 521 slides from the uppermost gear groove 21 into the adjustment groove 22 and moves to the top end of the adjustment groove 22, the adjustment portion 521 passes through the transverse groove 31 and abuts against the top edge of the transverse groove 31. When the adjustment part 521 moves downward along the adjustment groove 22, the adjustment part 521 is slid into the longitudinal groove 32 by the transverse groove 31 to be in a locked state. When the adjusting part 521 moves upward after moving to the bottom end of the adjusting slot 22, the adjusting part 521 is in the unlocked state by sliding the longitudinal slot 32 into the transverse slot 31.
In order to keep the adjusting part 521 stable in a locked state or an unlocked state, two racks 23 extending up and down are arranged on the support frame 1; the sliding plate 3 has elastic connection portions at left and right sides thereof, which are engaged with the corresponding racks 23, respectively, and the elastic connection portions are elastically deformed so that the sliding plate 3 can move up and down along the supporting frame 1. Therefore, when the adjusting portion 521 abuts against the top edge of the transverse slot 31 and moves upwards, the sliding plate 3 can be driven to move upwards, when the adjusting portion 521 abuts against the bottom edge of the longitudinal slot 32 and moves downwards, the sliding plate 3 can be driven to move downwards, otherwise, the sliding plate 3 cannot move upwards and downwards through the engagement of the elastic connecting portion thereof and the rack 23, so that the adjusting portion 521 can be stably kept in the longitudinal slot 32 and the transverse slot 31 respectively when being in the locking state and the unlocking state.
Further, the sliding plate 3 is provided with a slot 333 at the top or bottom edge thereof, the elastic connection portion includes a limiting portion 331 from the slot 333 to the side edge of the sliding plate 3, and at least one engaging structure 332 formed by the side edge of the limiting portion 331 protruding outwards, and the engaging structure 332 is engaged into the tooth space of the rack 23. The sliding plate 3 is provided with the slot 333, the root of the elastic connecting part is integrally connected with the sliding plate 3, the body of the elastic connecting part extends outwards from the root, so that the elastic connecting part can be bent and deformed in the left-right direction, and the clamping and embedding structure 332 can be separated from the tooth gap of the rack 23 and then clamped into the tooth gap above or below, so that the sliding plate 3 can slide up and down along the rack 23.
Still further, be equipped with fixed plate 2 on the front of support frame 1, fixed plate 2 passes through the fastener to be fixed on support frame 1, adjustment tank 22, gear groove 21, rack 23 all form on fixed plate 2 for above functional structure is more reasonable in structural layout, avoids influencing the sliding connection relation of back of the chair frame 4 and support frame 1, and in addition through with these functional structure integration of adjustment tank 22, gear groove 21, rack 23 on fixed plate 2, also make overall structure more compact.
In order to make the sliding connection between the support frame 1 and the back frame 4 more compact and reduce the gap between the two, a through hole 41 is formed in the back frame 4 and penetrates in the front and back direction, the lifting adjusting piece 52 is rotatably connected to the front surface of the back frame 4, the adjusting part 521 is formed by extending the lifting adjusting piece 52 backwards, the lifting adjusting piece 52 and the adjusting part 521 are of an integral structure, and the adjusting part 521 passes through the through hole, the transverse groove 31 or the longitudinal groove 32 and is inserted into the adjusting groove 22 or the gear groove 21.
With respect to the rotational connection relationship between the lifting adjusting piece 52 and the back frame 4, the front surface of the back frame 4 has a column 42 formed extending forward; the lift adjustment member 52 has a collar structure 522, and the collar structure 522 is rotatably sleeved on the column 42. More specifically, the collar structure 522 is formed at the top end of the elevation adjusting member 52, and the adjusting portion 521 is formed at the rear surface of the lower portion of the elevation adjusting member 52.
The front surface of the seat back frame 4 has a rail structure 43 surrounding the lifting adjusting member 52, the upper portion of the rail structure 43 wraps the collar structure 522, and the lower portion has a certain width in the left-right direction, so as to allow the lifting adjusting member 52 to swing left and right. The two ends of the elastic restoring member 51 are respectively supported on the lifting adjusting member 52 and the inner wall of the fence structure 43, so that the lifting adjusting member 52 can be stably supported by elasticity.
Still further, in order to avoid the falling of the elastic resetting piece 51, and to ensure that the elastic resetting piece 51 can always act on the same position of the lifting adjusting piece 52, and further can stably drive the lifting adjusting piece 52 to reset, the lifting adjusting piece is provided with a convex part 523, the convex part 523 is in a columnar structure, and the elastic resetting piece 51 is provided as a resetting spring, and one end of the elastic resetting piece is sleeved on the convex part 523.
In addition, the front of the seat back frame 4 is provided with a cover plate 44, and the cover plate 44 is fixedly connected to the rail structure 43, so as to form a closed space with the rail structure 43 for accommodating the lifting adjusting member 52 and the elastic restoring member 51, thereby playing a role in protecting the two.
In addition, in order to make the up-and-down sliding of the back frame 4 more stable and avoid the left-and-right direction deviation, so as to cause the back frame 4 to be blocked when moving up and down, the support frame 1 is provided with two longitudinal supports which are bilaterally symmetrical, the support frame 1 is in a forked structure on the whole structure, the back frame 4 is provided with two longitudinal beams which can slide up and down along the longitudinal supports, the two longitudinal supports are respectively provided with an adjusting groove 22 and a gear groove 21, the two longitudinal beams are respectively provided with a lifting adjusting part 52, and the integral structure of bilateral symmetry is arranged, so that the lifting action is more stable and reliable.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments can be modified, or some technical features can be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A chair back lifting mechanism comprises a supporting frame and a chair back frame which can move up and down along the supporting frame; the device is characterized in that the support frame is provided with an adjusting groove extending up and down, and one side edge of the adjusting groove is connected with a plurality of gear grooves extending out of the outer side of the adjusting groove and inclining downwards; the chair back frame is rotationally connected with a lifting adjusting piece which can swing left and right, and the lifting adjusting piece is provided with an adjusting part inserted in the adjusting groove or the gear groove; the chair back lifting structure is provided with an elastic reset piece for driving the adjusting part to slide into the gear groove from the adjusting groove; the lifting adjusting piece is provided with a locking structure, and when the adjusting part slides downwards from the top end of the adjusting groove and upwards from the bottom end of the adjusting groove, the locking structure is respectively used for locking the adjusting part to prevent the adjusting part from swinging left and right and unlocking the adjusting part to allow the adjusting part to swing left and right.
2. The chair back riser mechanism of claim 1, wherein the locking structure includes a slide plate movable up and down the support bracket, the slide plate having a transverse slot and a longitudinal slot; the transverse groove allows the adjusting part to pass through and swing left and right, so that the adjusting part is in an unlocking state; the longitudinal groove is connected to the bottom edge of the transverse groove, and when the adjusting part slides into the longitudinal groove from the transverse groove, the longitudinal groove can clamp the adjusting part to prevent the adjusting part from swinging left and right, so that the adjusting part is in a locking state.
3. The chair back lifting mechanism of claim 2, wherein the support frame is provided with two racks extending up and down; the left side and the right side of the sliding plate are respectively provided with an elastic connecting part meshed with the corresponding rack, and the elastic connecting parts can generate elastic deformation so that the sliding plate can move up and down along the supporting frame.
4. The chair back lifting mechanism of claim 3, wherein the sliding plate is provided with a notch at the top edge or the bottom edge; the elastic connecting part comprises a limiting part of the sliding plate from the notch to the side edge, and at least one clamping structure formed by the outward protrusion of the side edge of the limiting part, and the clamping structure is clamped into the tooth gap of the rack.
5. The chair back lifting mechanism of claim 3, wherein the support frame is fixedly connected with a fixing plate, and the adjusting groove, the gear groove and the rack are formed on the fixing plate.
6. The chair back lifting mechanism according to claim 2, wherein the chair back frame is provided with a through hole which is through from front to back; the lifting adjusting piece is rotatably connected to the front face of the chair back frame, the adjusting portion is formed by extending the lifting adjusting piece backwards, and the adjusting portion penetrates through the through hole, the transverse groove or the longitudinal groove and is inserted into the adjusting groove or the gear groove.
7. The chair back lifting mechanism according to claim 6, wherein the front face of the chair back frame is provided with a column extending forwards; the lifting adjusting piece is provided with a lantern ring structure, and the lantern ring structure is rotatably sleeved on the column body.
8. The chair back lift mechanism of claim 6, wherein the front face of the chair back frame has a rail structure surrounding the lift adjustment member; the both ends of elasticity piece that resets support respectively on the inner wall of lift adjustment spare and rail structure.
9. The chair back lifting mechanism of claim 8, wherein the lifting adjusting member has a protrusion thereon, and one end of the elastic return member is sleeved on the protrusion.
10. The chair back lifting mechanism according to any one of claims 1 to 9, wherein the support frame has two longitudinal brackets which are symmetrical left and right, and the chair back frame has two longitudinal beams which can slide up and down along the longitudinal brackets; all be equipped with adjustment tank and gear groove on two vertical supports, all be equipped with lift adjustment spare on two longerons.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220961403.2U CN217771853U (en) | 2022-04-25 | 2022-04-25 | Chair back lifting mechanism |
| PCT/CN2022/135745 WO2023207088A1 (en) | 2022-04-25 | 2022-12-01 | Chair back lifting/lowering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220961403.2U CN217771853U (en) | 2022-04-25 | 2022-04-25 | Chair back lifting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217771853U true CN217771853U (en) | 2022-11-11 |
Family
ID=83907830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220961403.2U Active CN217771853U (en) | 2022-04-25 | 2022-04-25 | Chair back lifting mechanism |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN217771853U (en) |
| WO (1) | WO2023207088A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023207088A1 (en) * | 2022-04-25 | 2023-11-02 | 安吉瑞宝家具有限公司 | Chair back lifting/lowering mechanism |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT239565Y1 (en) * | 1995-03-21 | 2001-03-05 | Miotto Internat Company | HEIGHT ADJUSTMENT DEVICE FOR A CHAIR BACKREST |
| CN209573966U (en) * | 2018-11-13 | 2019-11-05 | 佛山市科智美家具有限公司 | A kind of Rapid reset structure going up and down the chair back |
| CN213720942U (en) * | 2020-03-10 | 2021-07-20 | 安吉金标家具厂 | Chair back adjusting frame, lifting chair tray and lifting chair |
| CN214284091U (en) * | 2021-02-04 | 2021-09-28 | 张武宗 | Lifting chair structure with adjustable chair back |
| CN113229660A (en) * | 2021-05-25 | 2021-08-10 | 永艺家具股份有限公司 | Chair back lifting device |
| CN215936838U (en) * | 2021-09-29 | 2022-03-04 | 佛山市恒发家具科技有限公司 | Chair back lifting adjusting mechanism and chair |
| CN217771853U (en) * | 2022-04-25 | 2022-11-11 | 浙江瑞尚智能家居有限公司 | Chair back lifting mechanism |
-
2022
- 2022-04-25 CN CN202220961403.2U patent/CN217771853U/en active Active
- 2022-12-01 WO PCT/CN2022/135745 patent/WO2023207088A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023207088A1 (en) * | 2022-04-25 | 2023-11-02 | 安吉瑞宝家具有限公司 | Chair back lifting/lowering mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023207088A1 (en) | 2023-11-02 |
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