CN106690960A - Seat tray capable of automatically adjusting rigidity of backrest - Google Patents
Seat tray capable of automatically adjusting rigidity of backrest Download PDFInfo
- Publication number
- CN106690960A CN106690960A CN201710109368.5A CN201710109368A CN106690960A CN 106690960 A CN106690960 A CN 106690960A CN 201710109368 A CN201710109368 A CN 201710109368A CN 106690960 A CN106690960 A CN 106690960A
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- CN
- China
- Prior art keywords
- backrest
- base
- voussoir
- connector
- seat
- 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.)
- Granted
Links
- 230000001105 regulatory effect Effects 0.000 claims description 24
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000000837 restrainer Substances 0.000 claims 2
- 230000037396 body weight Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 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 Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention provides a seat tray capable of automatically adjusting the rigidity of a backrest. The seat tray comprises a seat cushion supporting plate, a backrest connecting plate and a base, wherein on end of the backrest connecting plate is rotatably connected with the base through a rotary shaft; the base is rotatably connected with the seat cushion supporting plate; the end part of the backrest connecting plate is rotatably connected with a connector; a connector rotary shaft is arranged at the other end of the connector; left and right sides of the rotary shaft of the connector are connected with a tension spring respectively; the other end of the tension spring is connected with an adjusting sliding rod; a pressure spring and a wedge are arranged between the base and the seat cushion supporting plate from bottom to top; the upper side of the wedge is in contact with the seat cushion supporting plate. When people sit on a seat, a downward force is applied to the seat cushion supporting plate and the wedge is pressed down to drive the adjusting sliding rod to move backward, so that the tension spring is stretched; the stretching degree of the tension spring is greater when people have heavier weight; the stretching degree of the tension spring is limited, so that a stretching range of the tension spring is reduced due to a backrest force and the rigidity of the backrest is improved, and furthermore, the safety is improved.
Description
Technical field
The invention belongs to office chair, swivel chair mechanical field, the seat tray that especially a kind of backrest rigidity is automatically adjusted.
Background technology
Major part backrest has the seat for facing upward function at present, and backrest is connected by torsion spring or stage clip, is removing backrest
Automatically reset after external force.Chinese patent such as Publication No. CN203106378 discloses a kind of seat tray of use leaf spring, wraps
Include a tray main body, a leaf spring and a back rest supports plate.Tray main body base plate formed a longitudinal fluting, depth from base plate middle part to
Edge is gradually increased.Leaf spring width is slightly less than recess width, and one end is arranged on tray main body base plate near groove location, the other end
It is free end, can be in a groove bent downwardly and automatically reset.Back rest supports plate is "L" shaped, and horizontal component is shelved on plate
On the support cross rib of spring, end is hinged with tray main body side wall.When seated user's back contact backrest, back rest supports plate is dynamic to layback
When, leaf spring provides a lasting, uniform and appropriate resilient support.But, such as personage's overweight, Overexertion is leaned on
Backrest, causes leaf spring excessive deformation, make backrest rigidity not enough, angle of inclination it is excessive and cause seat on people's disequilibrium and
Fall down, there is insecurity.
The content of the invention
Backrest the invention aims to solve seat in the prior art rigidly can not be with the changes of weight of user
Automatically adjust, cause to use unsafe problem, realize a kind of to be automatically adjusted automatically according to the size of seat cushion stress
Backrest rigidity, the people for adapting to different weight uses, comfortableness seat tray higher.
Above-mentioned technical problem of the invention is mainly what is be addressed by following technical proposals：A kind of backrest rigidity is automatic
The seat tray of regulation, including seat cushion supporting plate, backrest connecting plate and base, the seat cushion supporting plate down either side are longitudinally provided with the wing
Plate, is provided with base between the wing plate, the base be it is opening up U-shaped, described backrest connecting plate one end by rotating shaft with
Base rotation is connected, and the base is rotated with seat cushion supporting plate and is connected, and the backrest connecting plate end rotates with connector and is connected, institute
State the connector other end and be provided with connector rotating shaft, the base both sides are provided with the chute being adapted with connector rotating shaft, the company
Connect device rotating shaft or so to be connected with tension spring respectively, the tension spring other end is connected with regulation litter, the base both sides
The regulation chute being adapted with regulation litter is provided with, compression spring and wedge is provided between the base and seat cushion supporting plate from bottom to top
Block, the wedge surface of the voussoir is arranged in a crossed manner with regulation litter and contacts with each other, and the voussoir is respectively arranged on the left side and the right side voussoir branch
Frame, the voussoir support is connected with base, and the voussoir is connected with voussoir bracket slide, voussoir upside and seat cushion supporting plate phase
Contact.When people is sat on seat, seat cushion supporting plate is subject to the power that pushes, and voussoir is pushed, drive regulation litter to be moved rearwards by so that
Tension spring is stretched, and the heavier people's tension spring level of stretch of body weight is bigger, because the degree of drawing of tension spring is limited, root
After according to the body weight scope of drawn one, so that tension spring by backrest power range of stretch because just being reduced, body weight is heavier,
Because just smaller by backrest power range of stretch, the rigidity of backrest is improve, it is ensured that the people of heavyweight vehicle excessively will not swing back backrest,
So as to improve security.
Preferably, being arranged with roller on the regulation litter, the wedge surface of the voussoir is by roller and regulation litter phase
Contact.It is arranged with after roller, voussoir very smooth can will adjust litter stress forward slip, and the transmission effect of power is brighter
It is aobvious, will not be stuck.
Preferably, the base is provided with lifting regulating rod, the seat cushion supporting plate is provided with sliding groove, the sliding groove with rise
Falling tone pole is adapted, and position-limit mechanism is provided between the lifting regulating rod and connector.Common lifting regulating rod only have by
The effect of seat oscilaltion, and the present invention realizes another function, by spacing between lifting regulating rod and connector
Mechanism, realizes human body and leans against on backrest, finds and be fixed backrest after a comfortable angle.
Preferably, the position-limit mechanism is the fixing hole on connector, the fixing hole and lifting regulating rod phase
Adaptation.Using the position-limit mechanism of fixing hole, simple structure, production technology is also simple, with low cost.
Preferably, the position-limit mechanism is one group of unidirectional limiting tooth located at connector lower end, the lifting regulating rod
End face is provided with the oblique angle telescopic head being adapted with limiting tooth, is provided with spring between the oblique angle telescopic head and lifting regulating rod, institute
State oblique angle telescopic head bottom and be arranged with shift fork, the shift fork is connected with a driving lever.One group of unidirectional limiting tooth expands adjustable model
Enclose, be not limited only to one it is spacing, comfortableness is more preferable.
Beneficial effect：The present invention realize it is a kind of backrest rigidity can be automatically adjusted automatically according to the size of seat cushion stress,
The people for adapting to different weight uses, the more preferable seat tray of comfortableness.Because the deformation range of tension spring is limited, when not
When taking seat cushion with the people of body weight, the power that seat cushion supporting plate is received directly is stretched tension spring by voussoir and regulation litter,
So as to reduce the deformation range of tension spring；When the top backrest of human body, the shape that tension spring occurs by the power on backrest
Become scope to have greatly reduced, increased the rigidity of backrest.Therefore, backrest of the invention does not exist because of body weight mistake
Weight, and cause backrest stress excessive and swing back excessively, cause to make one the safety problem of wrestling.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of seat tray of the present invention.
Accompanying drawing 2 is the elevational cross-sectional view of seat tray of the present invention.
Accompanying drawing 3 is that seat tray of the present invention looks up semi-cutaway.
Accompanying drawing 4 is the structural representation between limiting tooth and lifting regulating rod in the embodiment of the present invention two.
Accompanying drawing 5 is the structural representation between voussoir described in seat tray of the present invention and the voussoir support.
1st, seat cushion supporting plate；2nd, backrest connecting plate；3rd, base；4th, wing plate；5th, rotating shaft；6th, connector；7th, connector rotating shaft；8、
Tension spring；9th, litter is adjusted；10th, chute is adjusted；11st, compression spring；12nd, voussoir；13rd, lifting regulating rod；14th, limiting tooth；
15th, spring；16th, shift fork；17th, driving lever；18th, voussoir support.
Specific embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
Embodiment one：As shown in Fig. 1,2,3,5, the present invention is the seat tray that a kind of backrest rigidity is automatically adjusted, including
Seat cushion supporting plate 1, backrest connecting plate 2 and base 3, the down either side of seat cushion supporting plate 1 are longitudinally provided with wing plate 4, between the wing plate 4
It is provided with base 3, the base 3 is opening up U-shaped, and described one end of backrest connecting plate 2 is connected by rotating shaft 5 with base rotation
2, the base 3 is rotated with seat cushion supporting plate 1 and is connected, and the end of backrest connecting plate 2 rotates with connector 6 and is connected, the connection
The other end of device 6 is provided with connector rotating shaft 7, and the both sides of the base 3 are provided with the chute being adapted with connector rotating shaft 7, the connection
Device rotating shaft 7 or so is connected with tension spring 8 respectively, and the other end of the tension spring 8 is connected with regulation litter 9, and the regulation is slided
Roller is arranged with pole 9, the wedge surface of the voussoir is in contact by roller with regulation litter 9, and rolling is arranged with regulation litter 9
After cylinder, voussoir very smooth can will adjust the stress forward slip of litter 9, and the transmission effect of power becomes apparent from, will not be stuck.
The both sides of the base 3 be provided with the regulation regulation chute 10 that is adapted of litter 9, the base 3 and seat cushion supporting plate 1 it
Between be provided with compression spring 11 and voussoir 12 from bottom to top, the wedge surface of the voussoir 12 is arranged in a crossed manner with regulation litter 9 and phase mutual connection
Touch, the voussoir 12 is respectively arranged on the left side and the right side voussoir support 18, and the voussoir support 18 is connected with base 3, the voussoir 12
It is slidably connected with voussoir support 18, the upside of the voussoir 12 is in contact with seat cushion supporting plate 1.When people is sat on seat, seat cushion support
Plate 1 is subject to the power that pushes, and voussoir 12 is pushed, and drives regulation litter 9 to be moved rearwards by so that tension spring 8 is stretched, and body weight is heavier
The level of stretch of people's tension spring 8 is bigger, because the degree of drawing of tension spring 8 is limited, according to the body weight scope of drawn one
Afterwards, so that tension spring 8 by backrest power range of stretch because just being reduced, body weight is heavier, because by backrest power range of stretch
It is just smaller, improve the rigidity of backrest, it is ensured that the people of heavyweight vehicle excessively will not swing back backrest, so as to improve security.
The base 3 is provided with lifting regulating rod 13, and the seat cushion supporting plate 2 is provided with sliding groove, the sliding groove and rising-falling tone
Pole 13 is adapted, and position-limit mechanism is provided between the lifting regulating rod 13 and connector 6.The position-limit mechanism is located at connection
Fixing hole on device 6, the fixing hole is adapted with lifting regulating rod 13.Using the position-limit mechanism of fixing hole, simple structure is raw
Production. art is also simple, with low cost.
Common lifting regulating rod 13 is only by the effect of seat oscilaltion, and the present invention realizes another function,
By the position-limit mechanism between lifting regulating rod 13 and connector 6, realize human body and lean against on backrest, find a comfortable angle
Backrest is fixed after degree.
The present invention realize it is a kind of can automatically adjust backrest rigidity automatically according to the size of seat cushion stress, adapt to not consubstantiality
The people of weight uses, the more preferable seat tray of comfortableness.Because the deformation range of tension spring 8 is limited, when different weight
When people takes seat cushion, the power that seat cushion supporting plate 1 is received directly is stretched tension spring 8 by voussoir 12 and regulation litter 9, so that
Reduce the deformation range of tension spring 8；When the top backrest of human body, the deformation that tension spring 8 occurs by the power on backrest
Scope has been greatly reduced, and increased the rigidity of backrest.Therefore, backrest of the invention does not exist because body weight is overweight,
And cause backrest stress excessive and swing back excessively, cause to make one the safety problem of wrestling.
Embodiment two：As Figure 1-5, the present invention is the seat tray that a kind of backrest rigidity is automatically adjusted, including seat cushion
Supporting plate 1, backrest connecting plate 2 and base 3, the down either side of seat cushion supporting plate 1 are longitudinally provided with wing plate 4, are provided between the wing plate 4
Base 3, the base 3 is opening up U-shaped, and described one end of backrest connecting plate 2 is connected 2, institute with base rotation by rotating shaft 5
State base 3 to be connected with the rotation of seat cushion supporting plate 1, the end of backrest connecting plate 2 rotates with connector 6 and is connected, and the connector 6 is another
One end is provided with connector rotating shaft 7, and the both sides of the base 3 are provided with the chute being adapted with connector rotating shaft 7, the connector rotating shaft
7 or so are connected with tension spring 8 respectively, and the other end of the tension spring 8 is connected with regulation litter 9, are covered on the regulation litter 9
Roller is provided with, the wedge surface of the voussoir is in contact by roller with regulation litter 9.It is arranged with after roller, voussoir can flow very much
Smooth will adjust the stress forward slip of litter 9, and the transmission effect of power becomes apparent from, will not be stuck.
The both sides of the base 3 be provided with the regulation regulation chute 10 that is adapted of litter 9, the base 3 and seat cushion supporting plate 1 it
Between be provided with compression spring 11 and voussoir 12 from bottom to top, the wedge surface of the voussoir 12 is arranged in a crossed manner with regulation litter 9 and phase mutual connection
Touch, the voussoir 12 is respectively arranged on the left side and the right side voussoir support 18, and the voussoir support 18 is connected with base 3, the voussoir 12
It is slidably connected with voussoir support 18, the upside of the voussoir 12 is in contact with seat cushion supporting plate 1.When people is sat on seat, seat cushion support
Plate 1 is subject to the power that pushes, and voussoir 12 is pushed, and drives regulation litter 9 to be moved rearwards by so that tension spring 8 is stretched, and body weight is heavier
The level of stretch of people's tension spring 8 is bigger, because the degree of drawing of tension spring 8 is limited, according to the body weight scope of drawn one
Afterwards, so that tension spring 8 by backrest power range of stretch because just being reduced, body weight is heavier, because by backrest power range of stretch
It is just smaller, improve the rigidity of backrest, it is ensured that the people of heavyweight vehicle excessively will not swing back backrest, so as to improve security.
The base 3 is provided with lifting regulating rod 13, and the seat cushion supporting plate 2 is provided with sliding groove, the sliding groove and rising-falling tone
Pole 13 is adapted, and position-limit mechanism is provided between the lifting regulating rod 13 and connector 6.The position-limit mechanism is located at connection
One group of unidirectional limiting tooth 14 of device lower end, the end face of the lifting regulating rod 13 is provided with the oblique angle telescopic head being adapted with limiting tooth 14
18, spring 15 is provided between the oblique angle telescopic head 18 and lifting regulating rod 13, the bottom of oblique angle telescopic head 18 is arranged with dials
Fork 16, the shift fork 16 is connected with a driving lever 17.One group of unidirectional limiting tooth 14 expands adjustable extent, is not limited only to a limit
Position, comfortableness is more preferable.
Common lifting regulating rod 13 is only by the effect of seat oscilaltion, and the present invention realizes another function,
By the position-limit mechanism between lifting regulating rod 13 and connector 6, realize human body and lean against on backrest, find a comfortable angle
Backrest is fixed after degree.
The present invention realize it is a kind of can automatically adjust backrest rigidity automatically according to the size of seat cushion stress, adapt to not consubstantiality
The people of weight uses, the more preferable seat tray of comfortableness.Because the deformation range of tension spring 8 is limited, when different weight
When people takes seat cushion, the power that seat cushion supporting plate 1 is received directly is stretched tension spring 8 by voussoir 12 and regulation litter 9, so that
Reduce the deformation range of tension spring 8；When the top backrest of human body, the deformation that tension spring 8 occurs by the power on backrest
Scope has been greatly reduced, and increased the rigidity of backrest.Therefore, backrest of the invention does not exist because body weight is overweight,
And cause backrest stress excessive and swing back excessively, cause to make one the safety problem of wrestling.
Claims (5)
1. the seat tray that a kind of backrest rigidity is automatically adjusted, including seat cushion supporting plate, backrest connecting plate and base, its feature exist
In：The seat cushion supporting plate down either side is longitudinally provided with wing plate, and base is provided between the wing plate, and the base is opening up
U-shaped, described backrest connecting plate one end is connected by rotating shaft with base rotation, and the base is rotated with seat cushion supporting plate and is connected, described
Backrest connecting plate end rotates with connector and is connected, and the connector other end is provided with connector rotating shaft, and the base both sides set
There are the chute being adapted with connector rotating shaft, described connector rotating shaft or so to be connected with tension spring respectively, the tension spring
The other end is connected with regulation litter, and the base both sides are provided with the regulation chute being adapted with regulation litter, the base and seat
Be provided with compression spring and voussoir from bottom to top between pad supporting plate, the wedge surface of the voussoir with adjust that litter is arranged in a crossed manner and phase mutual connection
Touch, the voussoir is respectively arranged on the left side and the right side voussoir support, and the voussoir support is connected with base, the voussoir and voussoir support
It is slidably connected, the voussoir upside is in contact with seat cushion supporting plate.
2. the seat tray that a kind of backrest rigidity according to claim 1 is automatically adjusted, it is characterised in that：The regulation is slided
Roller is arranged with pole, the wedge surface of the voussoir is in contact by roller with regulation litter.
3. the seat tray that a kind of backrest rigidity according to claim 1 and 2 is automatically adjusted, it is characterised in that：The bottom
Seat is provided with lifting regulating rod, and the seat cushion supporting plate is provided with sliding groove, and the sliding groove is adapted with lifting regulating rod, the lifting
Position-limit mechanism is provided between adjusting rod and connector.
4. the seat tray that a kind of backrest rigidity according to claim 3 is automatically adjusted, it is characterised in that：The position restrainer
Structure is the fixing hole on connector, and the fixing hole is adapted with lifting regulating rod.
5. the seat tray that a kind of backrest rigidity according to claim 3 is automatically adjusted, it is characterised in that：The position restrainer
Structure is one group of unidirectional limiting tooth located at connector lower end, and the lift adjustment rod end surface is provided with the oblique angle being adapted with limiting tooth
Telescopic head, is provided with spring between the oblique angle telescopic head and lifting regulating rod, the oblique angle telescopic head bottom is arranged with shift fork, institute
Shift fork is stated to be connected with a driving lever.
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 true CN106690960A (en) | 2017-05-24 |
| CN106690960B 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 |
|---|---|
| CN106690960B (en) | 2024-04-30 |
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