CN106690960B - Seat tray with automatically-adjusted backrest rigidity - Google Patents
Seat tray with automatically-adjusted backrest rigidity Download PDFInfo
- Publication number
- CN106690960B CN106690960B CN201710109368.5A CN201710109368A CN106690960B CN 106690960 B CN106690960 B CN 106690960B CN 201710109368 A CN201710109368 A CN 201710109368A CN 106690960 B CN106690960 B CN 106690960B
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- China
- Prior art keywords
- base
- connector
- seat cushion
- seat
- rod
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 206010052904 Musculoskeletal stiffness Diseases 0.000 claims 3
- 238000003825 pressing Methods 0.000 abstract description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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
-
- 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
Landscapes
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Chairs Characterized By Structure (AREA)
Abstract
The utility model provides a seat tray of back rigidity automatically regulated, includes seatpad layer board, back connecting plate and base, back connecting plate one end is rotated through pivot and base and is connected, the base rotates with the seatpad layer board and is connected, back connecting plate tip is rotated with the connector and is connected, the connector other end is equipped with the connector pivot, the connector pivot is controlled and is linked to each other with tension spring respectively, the tension spring other end links to each other with the regulation slide bar, upward be equipped with pressure spring and voussoir from the bottom between base and the seatpad layer board, the voussoir upside contacts with the seatpad layer board. When a person sits on the seat, the seat cushion supporting plate is pressed down by the pressing force, the wedge blocks are pressed down, the adjusting sliding rod is driven to move backwards, so that the tension springs are stretched, the stretching degree of the heavier person is larger, the stretching range of the tension springs is narrowed due to the fact that the stretching degree of the tension springs is limited, the rigidity of the backrest is improved, and accordingly safety is improved.
Description
Technical Field
The invention belongs to the field of office chairs and swivel chairs, and particularly relates to a seat tray with automatically-adjusted back rigidity.
Background
At present, most of the backrests have a tilting function, and are connected with the backrests through torsion springs or pressure springs, so that the backrests automatically reset after external force is removed. The chinese patent publication CN203106378 discloses a seat tray using a leaf spring, which includes a tray body, a leaf spring and a back support plate. The bottom plate of the tray body forms a longitudinal groove, and the depth is gradually increased from the middle part of the bottom plate to the edge. The width of the leaf spring is slightly smaller than that of the groove, one end of the leaf spring is arranged on the bottom plate of the tray main body and close to the groove, and the other end of the leaf spring is a free end and can be bent downwards in the groove and automatically reset. The back support plate is L-shaped, the horizontal part is placed on the support transverse rib of the plate spring, and the end part is hinged with the side wall surface of the tray main body. The leaf spring provides a continuous, uniform and moderate spring support as the back support plate reclines back as the seated user's back contacts the back. However, if a person is too heavy, the person leans against the backrest with excessive force, which causes excessive deformation of the leaf springs, so that the stiffness of the backrest is insufficient, and the person on the seat is out of balance and falls down due to the excessive inclination angle, so that the safety is not ensured.
Disclosure of Invention
The invention aims to solve the problem that the backrest rigidity of a seat in the prior art cannot be automatically adjusted along with the weight change of a user, so that the seat is unsafe to use, and the seat tray which can automatically adjust the backrest rigidity according to the stress of a seat cushion, is suitable for people with different weights and has high comfort is realized.
The technical problems of the invention are mainly solved by the following technical proposal: the utility model provides a seat tray of back rigidity automatically regulated, includes seatpad layer board, back connecting plate and base, seatpad layer board both sides below vertically is equipped with the pterygoid lamina, be equipped with the base between the pterygoid lamina, the base is the U type that the opening was up, back connecting plate one end is rotated through pivot and base and is connected, the base rotates with seatpad layer board and is connected, back connecting plate tip and connector rotate and are connected, the connector other end is equipped with the connector pivot, the base both sides are equipped with the spout with connector pivot looks adaptation, the connector pivot links to each other with the tension spring respectively about, the tension spring other end links to each other with the regulation slide, the base both sides are equipped with the regulation spout with regulation slide looks adaptation, upward be equipped with pressure spring and voussoir from the bottom between base and the seatpad layer board, the voussoir cross arrangement and the mutual contact of voussoir, the left and right sides are equipped with the voussoir support respectively, the voussoir support links to each other, voussoir and support sliding connection, upside and seatpad. When a person sits on the seat, the seat cushion supporting plate is pressed down by the pressing force, the wedge blocks are pressed down, the driving adjusting sliding rod moves backwards to enable the tension spring to stretch, the tension degree of the tension spring of the heavier person is larger, as the tension degree of the tension spring is limited, the tension spring is stretched to a certain extent according to the weight, the tension spring is reduced due to the fact that the tension range of the backrest is reduced, the heavier person is, the rigidity of the backrest is improved due to the fact that the tension range of the backrest is reduced, and the fact that the backrest cannot be excessively bent backwards by the heavier person is guaranteed, so that safety is improved.
Preferably, the adjusting slide rod is sleeved with a roller, and the wedge surface of the wedge block is contacted with the adjusting slide rod through the roller. After the roller is sleeved, the wedge blocks can smoothly slide the adjusting slide rod forwards under the force, so that the force transmission effect is more obvious, and the wedge blocks cannot be blocked.
Preferably, the base is provided with a lifting adjusting rod, the seat cushion supporting plate is provided with a sliding groove, the sliding groove is matched with the lifting adjusting rod, and a limiting mechanism is arranged between the lifting adjusting rod and the connector. The common lifting adjusting rod only has the function of lifting the seat up and down, and the invention realizes another function, and the human body is leaned against the backrest through the limiting mechanism between the lifting adjusting rod and the connector, so that the backrest is fixed after a comfortable angle is found.
Preferably, the limiting mechanism is a fixing hole arranged on the connector, and the fixing hole is matched with the lifting adjusting rod. The limiting mechanism with the fixing hole is simple in structure, simple in production process and low in cost.
Preferably, the limiting mechanism is a group of unidirectional limiting teeth arranged at the lower end of the connector, an oblique angle telescopic head matched with the limiting teeth is arranged on the end face of the lifting adjusting rod, a spring is arranged between the oblique angle telescopic head and the lifting adjusting rod, a shifting fork is clamped at the bottom of the oblique angle telescopic head, and the shifting fork is connected with a shifting rod. The one-way limiting teeth expand the adjustable range, are not only limited to one limit, but also have better comfort.
The beneficial effects are that: the seat tray provided by the invention can automatically adjust the rigidity of the backrest according to the stress of the seat cushion, is suitable for people with different weights, and has better comfort. Because the deformation range of the tension spring is limited, when people with different weights sit on the seat cushion, the force born by the seat cushion supporting plate directly stretches the tension spring through the wedge block and the adjusting slide rod, so that the deformation range of the tension spring is reduced; when a human body leans on the backrest, the deformation range of the tension spring due to the force on the backrest is greatly reduced, and the rigidity of the backrest is increased. Therefore, the backrest of the invention has no safety problem of falling down caused by excessive stress and excessive backward tilting of the backrest due to excessive weight of a human body.
Drawings
Fig. 1 is a schematic view of a seat tray according to the present invention.
Fig. 2 is a front cross-sectional view of a seat tray according to the present invention.
Fig. 3 is a bottom half-sectional view of the seat tray of the present invention.
Fig. 4 is a schematic structural view between the limiting teeth and the lifting adjusting rod in the second embodiment of the present invention.
Fig. 5 is a schematic view of the structure between the wedge and the wedge bracket in the seat tray according to the present invention.
1. A seat cushion supporting plate; 2. a backrest connecting plate; 3. a base; 4. a wing plate; 5. a rotating shaft; 6. a connector; 7. a connector shaft; 8. a tension spring; 9. adjusting the slide rod; 10. adjusting the chute; 11. a pressure spring; 12. wedge blocks; 13. a lifting adjusting rod; 14. limit teeth; 15. a spring; 16. a shifting fork; 17. a deflector rod; 18. wedge bracket.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Embodiment one: as shown in fig. 1,2, 3 and 5, the invention relates to a seat tray with automatically-adjusted backrest rigidity, which comprises a seat cushion supporting plate 1, a backrest connecting plate 2 and a base 3, wherein wing plates 4 are longitudinally arranged below two sides of the seat cushion supporting plate 1, the base 3 is arranged between the wing plates 4, the base 3 is in a U shape with an upward opening, one end of the backrest connecting plate 2 is rotatably connected with the base 2 through a rotating shaft 5, the base 3 is rotatably connected with the seat cushion supporting plate 1, the end part of the backrest connecting plate 2 is rotatably connected with a connector 6, the other end of the connector 6 is provided with a connector rotating shaft 7, sliding grooves matched with the connector rotating shaft 7 are arranged on two sides of the base 3, the left side and the right side of the connector rotating shaft 7 are respectively connected with a tension spring 8, the other end of the tension spring 8 is connected with an adjusting sliding rod 9, a roller is sleeved on the adjusting sliding rod 9, a wedge surface of the wedge is contacted with the adjusting sliding rod 9 through the roller, and after the roller is sleeved on the adjusting sliding rod 9, the wedge can slide forwards slide under the force, and the force of the adjusting sliding rod is more smoothly, and the force is not blocked.
The seat is characterized in that adjusting sliding grooves 10 matched with the adjusting sliding rods 9 are formed in two sides of the base 3, a pressure spring 11 and a wedge block 12 are arranged between the base 3 and the seat cushion supporting plate 1 from bottom to top, wedge surfaces of the wedge block 12 are arranged in a crossing mode with the adjusting sliding rods 9 and are in contact with each other, wedge block brackets 18 are respectively arranged on the left side and the right side of the wedge block 12, the wedge block brackets 18 are connected with the base 3, the wedge block 12 is in sliding connection with the wedge block brackets 18, and the upper side of the wedge block 12 is in contact with the seat cushion supporting plate 1. When a person sits on the seat, the seat cushion supporting plate 1 is pressed down by the pressing force, the wedge block 12 is pressed down, the adjusting sliding rod 9 is driven to move backwards, so that the tension spring 8 is stretched, the tension degree of the tension spring 8 of the heavier person is larger, the tension degree of the tension spring 8 is limited, after the tension spring 8 is stretched according to the weight, the stretching range of the tension spring 8 is narrowed due to the backrest force, the heavier person is, the stretching range of the backrest force is smaller, the rigidity of the backrest is improved, and the backrest cannot be excessively bent backwards by the heavier person, so that the safety is improved.
The base 3 is provided with a lifting adjusting rod 13, the seat cushion supporting plate 2 is provided with a sliding groove which is matched with the lifting adjusting rod 13, and a limiting mechanism is arranged between the lifting adjusting rod 13 and the connector 6. The limiting mechanism is a fixed hole arranged on the connector 6, and the fixed hole is matched with the lifting adjusting rod 13. The limiting mechanism with the fixing hole is simple in structure, simple in production process and low in cost.
The common lifting adjusting rod 13 only has the function of lifting the seat up and down, but the invention realizes another function, and the human body is leaned against the backrest through the limiting mechanism between the lifting adjusting rod 13 and the connector 6, and the backrest is fixed after a comfortable angle is found.
The seat tray provided by the invention can automatically adjust the rigidity of the backrest according to the stress of the seat cushion, is suitable for people with different weights, and has better comfort. Because the deformation range of the tension spring 8 is limited, when people with different weights sit on the seat cushion, the force born by the seat cushion supporting plate 1 directly stretches the tension spring 8 through the wedge block 12 and the adjusting slide rod 9, so that the deformation range of the tension spring 8 is reduced; when a human body leans against the backrest, the deformation range of the tension spring 8 due to the force on the backrest is greatly reduced, and the rigidity of the backrest is increased. Therefore, the backrest of the invention has no safety problem of falling down caused by excessive stress and excessive backward tilting of the backrest due to excessive weight of a human body.
Embodiment two: as shown in fig. 1-5, the invention relates to a seat tray with automatically-adjusted backrest rigidity, which comprises a seat cushion supporting plate 1, a backrest connecting plate 2 and a base 3, wherein wing plates 4 are longitudinally arranged below two sides of the seat cushion supporting plate 1, the base 3 is arranged between the wing plates 4, the base 3 is in a U shape with an upward opening, one end of the backrest connecting plate 2 is rotatably connected with the base 2 through a rotating shaft 5, the base 3 is rotatably connected with the seat cushion supporting plate 1, the end part of the backrest connecting plate 2 is rotatably connected with a connector 6, the other end of the connector 6 is provided with a connector rotating shaft 7, sliding grooves matched with the connector rotating shaft 7 are arranged on two sides of the base 3, the left side and the right side of the connector rotating shaft 7 are respectively connected with a tension spring 8, the other end of the tension spring 8 is connected with an adjusting sliding rod 9, a roller is sleeved on the adjusting sliding rod 9, and a wedge surface of a wedge is contacted with the adjusting sliding rod 9 through the roller. After the roller is sleeved, the wedge blocks can smoothly slide the adjusting slide rod 9 forwards under the force, so that the force transmission effect is more obvious, and the wedge blocks cannot be blocked.
The seat is characterized in that adjusting sliding grooves 10 matched with the adjusting sliding rods 9 are formed in two sides of the base 3, a pressure spring 11 and a wedge block 12 are arranged between the base 3 and the seat cushion supporting plate 1 from bottom to top, wedge surfaces of the wedge block 12 are arranged in a crossing mode with the adjusting sliding rods 9 and are in contact with each other, wedge block brackets 18 are respectively arranged on the left side and the right side of the wedge block 12, the wedge block brackets 18 are connected with the base 3, the wedge block 12 is in sliding connection with the wedge block brackets 18, and the upper side of the wedge block 12 is in contact with the seat cushion supporting plate 1. When a person sits on the seat, the seat cushion supporting plate 1 is pressed down by the pressing force, the wedge block 12 is pressed down, the adjusting sliding rod 9 is driven to move backwards, so that the tension spring 8 is stretched, the tension degree of the tension spring 8 of the heavier person is larger, the tension degree of the tension spring 8 is limited, after the tension spring 8 is stretched according to the weight, the stretching range of the tension spring 8 is narrowed due to the backrest force, the heavier person is, the stretching range of the backrest force is smaller, the rigidity of the backrest is improved, and the backrest cannot be excessively bent backwards by the heavier person, so that the safety is improved.
The base 3 is provided with a lifting adjusting rod 13, the seat cushion supporting plate 2 is provided with a sliding groove which is matched with the lifting adjusting rod 13, and a limiting mechanism is arranged between the lifting adjusting rod 13 and the connector 6. The limiting mechanism is a group of unidirectional limiting teeth 14 arranged at the lower end of the connector, an oblique angle telescopic head 18 matched with the limiting teeth 14 is arranged on the end face of the lifting adjusting rod 13, a spring 15 is arranged between the oblique angle telescopic head 18 and the lifting adjusting rod 13, a shifting fork 16 is clamped at the bottom of the oblique angle telescopic head 18, and the shifting fork 16 is connected with a shifting rod 17. The one-way limiting teeth 14 expand the adjustable range, are not limited to one limit, and are good in comfort.
The common lifting adjusting rod 13 only has the function of lifting the seat up and down, but the invention realizes another function, and the human body is leaned against the backrest through the limiting mechanism between the lifting adjusting rod 13 and the connector 6, and the backrest is fixed after a comfortable angle is found.
The seat tray provided by the invention can automatically adjust the rigidity of the backrest according to the stress of the seat cushion, is suitable for people with different weights, and has better comfort. Because the deformation range of the tension spring 8 is limited, when people with different weights sit on the seat cushion, the force born by the seat cushion supporting plate 1 directly stretches the tension spring 8 through the wedge block 12 and the adjusting slide rod 9, so that the deformation range of the tension spring 8 is reduced; when a human body leans against the backrest, the deformation range of the tension spring 8 due to the force on the backrest is greatly reduced, and the rigidity of the backrest is increased. Therefore, the backrest of the invention has no safety problem of falling down caused by excessive stress and excessive backward tilting of the backrest due to excessive weight of a human body.
Claims (4)
1. The utility model provides a seat tray of back rigidity automatically regulated, includes seatpad layer board, back connecting plate and base, its characterized in that:
The seat cushion comprises seat cushion supporting plates, wherein wing plates are longitudinally arranged below the two sides of the seat cushion supporting plates, a base is arranged between the wing plates, the base is of a U-shaped structure with an upward opening, one end of a backrest connecting plate is rotatably connected with the base through a rotating shaft, the base is rotatably connected with the seat cushion supporting plates, the end part of the backrest connecting plate is rotatably connected with a connector, the other end of the connector is provided with a connector rotating shaft, the two sides of the base are provided with sliding grooves matched with the connector rotating shaft, the left side and the right side of the connector rotating shaft are respectively connected with a tension spring, the other end of the tension spring is connected with an adjusting sliding rod, the two sides of the base are provided with adjusting sliding grooves matched with the adjusting sliding rod, a pressure spring and a wedge block are arranged between the base and the seat cushion supporting plates from bottom to top, wedge blocks are arranged in a crossing manner and are mutually contacted, the left side and the right side of the wedge block supporting plates are respectively provided with wedge block brackets, the wedge blocks are connected with the base in a sliding manner, and the upper sides of the wedge blocks are contacted with the seat cushion supporting plates;
the adjusting slide rod is sleeved with a roller, and the wedge surface of the wedge block is contacted with the adjusting slide rod through the roller.
2. The seat tray with automatically adjusted back stiffness of claim 1, wherein:
The base is provided with a lifting adjusting rod, the seat cushion supporting plate is provided with a sliding groove, the sliding groove is matched with the lifting adjusting rod, and a limiting mechanism is arranged between the lifting adjusting rod and the connector.
3. A seat tray with automatically adjusted back stiffness as in claim 2, wherein:
The limiting mechanism is a fixing hole arranged on the connector, and the fixing hole is matched with the lifting adjusting rod.
4. A seat tray with automatically adjusted back stiffness as in claim 2, wherein:
the limiting mechanism is a group of unidirectional limiting teeth arranged at the lower end of the connector, an oblique angle telescopic head matched with the limiting teeth is arranged on the end face of the lifting adjusting rod, a spring is arranged between the oblique angle telescopic head and the lifting adjusting rod, a shifting fork is arranged at the bottom of the oblique angle telescopic head in a clamping mode, and the shifting fork is connected with a shifting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710109368.5A CN106690960B (en) | 2017-02-27 | 2017-02-27 | Seat tray with automatically-adjusted backrest rigidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710109368.5A CN106690960B (en) | 2017-02-27 | 2017-02-27 | Seat tray with automatically-adjusted backrest rigidity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106690960A CN106690960A (en) | 2017-05-24 |
| CN106690960B true CN106690960B (en) | 2024-04-30 |
Family
ID=58917694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710109368.5A Active CN106690960B (en) | 2017-02-27 | 2017-02-27 | Seat tray with automatically-adjusted backrest rigidity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106690960B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1085799A (en) * | 1978-03-03 | 1980-09-16 | Vernon J. Mann | Deck-mounted fishing reel |
| CN2604228Y (en) * | 2002-12-06 | 2004-02-25 | 廖世奇 | Rice mill with wedge type pressure regulating mechanism |
| CN200983987Y (en) * | 2006-09-15 | 2007-12-05 | 祝卫国 | Chair salver |
| CN201154016Y (en) * | 2008-02-01 | 2008-11-26 | 汪志刚 | Multifunctional chair for correcting posture |
| CN201360761Y (en) * | 2009-03-05 | 2009-12-16 | 陈千奎 | Locking mechanism of chair chassis |
| CN202588946U (en) * | 2012-05-16 | 2012-12-12 | 陈千奎 | Rotary chair pallet |
| CN202874564U (en) * | 2012-09-18 | 2013-04-17 | 浙江永艺家具股份有限公司 | Swivel chair chassis |
| CN203106378U (en) * | 2013-03-09 | 2013-08-07 | 汕头市丽时家具有限公司 | Seat pallet adopting plate spring |
| CN104939560A (en) * | 2015-03-26 | 2015-09-30 | 浙江永艺家具股份有限公司 | Damping adjusting device for chair seat of seat-back linkage chair |
| CN205041037U (en) * | 2015-09-27 | 2016-02-24 | 永艺家具股份有限公司 | Revolving chair stock |
-
2017
- 2017-02-27 CN CN201710109368.5A patent/CN106690960B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1085799A (en) * | 1978-03-03 | 1980-09-16 | Vernon J. Mann | Deck-mounted fishing reel |
| CN2604228Y (en) * | 2002-12-06 | 2004-02-25 | 廖世奇 | Rice mill with wedge type pressure regulating mechanism |
| CN200983987Y (en) * | 2006-09-15 | 2007-12-05 | 祝卫国 | Chair salver |
| CN201154016Y (en) * | 2008-02-01 | 2008-11-26 | 汪志刚 | Multifunctional chair for correcting posture |
| CN201360761Y (en) * | 2009-03-05 | 2009-12-16 | 陈千奎 | Locking mechanism of chair chassis |
| CN202588946U (en) * | 2012-05-16 | 2012-12-12 | 陈千奎 | Rotary chair pallet |
| CN202874564U (en) * | 2012-09-18 | 2013-04-17 | 浙江永艺家具股份有限公司 | Swivel chair chassis |
| CN203106378U (en) * | 2013-03-09 | 2013-08-07 | 汕头市丽时家具有限公司 | Seat pallet adopting plate spring |
| CN104939560A (en) * | 2015-03-26 | 2015-09-30 | 浙江永艺家具股份有限公司 | Damping adjusting device for chair seat of seat-back linkage chair |
| CN205041037U (en) * | 2015-09-27 | 2016-02-24 | 永艺家具股份有限公司 | Revolving chair stock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106690960A (en) | 2017-05-24 |
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