CN106937798A - A kind of seat tray for automatically adjusting backrest rigidity - Google Patents
A kind of seat tray for automatically adjusting backrest rigidity Download PDFInfo
- Publication number
- CN106937798A CN106937798A CN201710109357.7A CN201710109357A CN106937798A CN 106937798 A CN106937798 A CN 106937798A CN 201710109357 A CN201710109357 A CN 201710109357A CN 106937798 A CN106937798 A CN 106937798A
- Authority
- CN
- China
- Prior art keywords
- voussoir
- base
- backrest
- connector
- supporting plate
- 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
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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
-
- 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
- A47C7/02—Seat parts
-
- 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)
Abstract
A kind of seat tray for automatically adjusting backrest rigidity, including seat cushion supporting plate, backrest connecting plate and base, described backrest connecting plate one end is connected by rotating shaft with base rotation, the base is rotated with seat cushion supporting plate and is connected, the backrest connecting plate end rotates with connector and is connected, the connector other end is provided with connector rotating shaft, described connector rotating shaft or so is connected with tension spring respectively, the tension spring other end is connected with regulation litter, compression spring and voussoir are provided between base and the seat cushion supporting plate from bottom to top, it is in contact on the upside of the voussoir with seat cushion supporting plate.When people is sat on seat, seat cushion supporting plate is by the power pushed, voussoir is pushed, driving regulation litter is moved rearwards by so that tension spring is stretched, heavier people's tension spring level of stretch is bigger, because the degree of drawing of tension spring is limited, so that tension spring by backrest power range of stretch because just being reduced, the rigidity of backrest is improved, so as to improve security.
Description
Technical field
The invention belongs to office chair, swivel chair mechanical field, especially a kind of seat tray for automatically adjusting backrest rigidity.
Background technology
Major part backrest has the seat for facing upward function at present, connects backrest 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 one longitudinal fluting of formation, depth in the middle part of the base plate 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 close to groove location, the other end
For free end, it can be bent downwardly and automatically reset in a groove.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 one 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
The invention aims to solve the backrest of seat in the prior art rigidly can not with user changes of weight
Automatically adjust, cause to use unsafe problem, realize a kind of can automatically adjust automatically according to the size of seat cushion stress
Backrest rigidity, adapt to different weight people using and can prevent that the people of overweight from having the seat support of damage to seat
Disk.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：One kind automatically adjusts backrest
The seat tray of rigidity, including seat cushion supporting plate, backrest connecting plate and base, the seat cushion supporting plate down either side are longitudinally provided with the wing
Be provided with base between plate, 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
The connector other end is stated 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 respectively with tension spring to be connected, the tension spring other end is connected with regulation litter, the base both sides
Provided with the regulation chute being adapted with regulation litter, compression spring and wedge are provided with from bottom to top between base and the seat cushion supporting plate
Block, the wedge surface of the voussoir and regulation litter are arranged in a crossed manner and contact 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 by voussoir rotating shaft with voussoir bracket slide, the voussoir and wedge
It is provided with the upside of torsion spring, the voussoir and is in contact with seat cushion supporting plate between block rotating shaft.When people is sat on seat, seat cushion supporting plate by
The power pushed, voussoir is pushed, and driving regulation litter is moved rearwards by so that tension spring is stretched, and the heavier people's tension spring of body weight is drawn
Stretch that degree is bigger, because the degree of drawing of tension spring is limited, after the body weight scope of drawn one, so that drawing
Power spring by backrest power range of stretch because just being reduced, and body weight is heavier, because just smaller by backrest power range of stretch, improves backrest
Rigidity, it is ensured that the people of heavyweight vehicle excessively will not swing back backrest, so as to improve security.
Voussoir rotating shaft and torsion spring are added between voussoir and voussoir support so that when press contacts adjust litter under voussoir, wedge
Block, which has, certain upwarps angle so that the direct stress angle between voussoir and regulation litter becomes big, so that direct stress diminishes, prevents
The overweight frictional force caused between voussoir and regulation litter of body weight is excessive even more so that regulation litter deformation.
Preferably, being arranged with roller on the regulation litter, the wedge surface of the voussoir passes through 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, and the sliding groove is with rising
Falling tone pole is adapted, and position-limit mechanism is provided between the lifting regulating rod and connector.Common lifting regulating rod only will
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 backrest is fixed after a comfortable angle.
Preferably, the position-limit mechanism is the fixing hole on connector, the fixing hole and lifting regulating rod phase
Adaptation.Simple in construction using the position-limit mechanism of fixing hole, 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, and spring, institute are provided between the oblique angle telescopic head and lifting regulating rod
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 can be automatically adjusted automatically according to the size of seat cushion stress backrest rigidity,
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, add the rigidity of backrest.Therefore, backrest of the invention is not present 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 rotating shaft；19th, torsion spring；20th, voussoir support.
Embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
Embodiment one：As Figure 1-5, the present invention is a kind of seat tray for automatically adjusting backrest rigidity, 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 between wing plate 4, the wing plate 4 and are provided with
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 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 tension spring 8 is connected with regulation litter 9, are covered on the regulation litter 9
Provided with roller, the wedge surface of the voussoir is in contact by roller in 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 base 3 be provided with the regulation chute 10 that is adapted of regulation 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 with adjusting that litter 9 is arranged in a crossed manner and phase mutual connection
Touch, the voussoir 12 is respectively arranged on the left side and the right side voussoir support 20, and the voussoir support 20 is connected with base 3, the voussoir 12
It is slidably connected by voussoir rotating shaft 18 with voussoir support 20, torsion spring 19 is provided between the voussoir 12 and voussoir rotating shaft 18, it is described
The upside of voussoir 12 is in contact with seat cushion supporting plate 1.Voussoir rotating shaft 18 and torsion spring 19 are added between voussoir 12 and voussoir support so that
During 12 times press contacts of voussoir regulation litter 9, voussoir 12, which has, certain upwarps angle so that between voussoir 12 and regulation litter 9
Direct stress angle becomes big, so that direct stress diminishes, preventing that body weight is overweight causes the friction between voussoir 12 and regulation litter 9
Power is excessive even more so that regulation litter 9 is deformed.
When people is sat on seat, seat cushion supporting plate 1 is pushed by the power pushed, voussoir 12, and driving regulation litter 9 is moved back by
Dynamic make it that tension spring 8 is stretched, the level of stretch of people's tension spring 8 of body weight more weight is bigger, because the degree of drawing of tension spring 8 is
Limited, after the body weight scope of drawn one, so that tension spring 8 by backrest power range of stretch because just being reduced
, body weight is heavier, because just smaller by backrest power range of stretch, improves the rigidity of backrest, it is ensured that the people of heavyweight vehicle will not mistake
Degree swings 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.It is simple in construction using the position-limit mechanism of fixing hole, it 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 backrest rigidity can be automatically adjusted 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 adds the rigidity of backrest.Therefore, backrest of the invention is not present 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 a kind of seat tray for automatically adjusting backrest rigidity, 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 between wing plate 4, the wing plate 4 and are provided with
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 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 tension spring 8 is connected with regulation litter 9, are covered on the regulation litter 9
Provided with roller, the wedge surface of the voussoir is in contact by roller in 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 base 3 be provided with the regulation chute 10 that is adapted of regulation 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 with adjusting that litter 9 is arranged in a crossed manner and phase mutual connection
Touch, the voussoir 12 is respectively arranged on the left side and the right side voussoir support 20, and the voussoir support 20 is connected with base 3, the voussoir 12
It is slidably connected by voussoir rotating shaft 18 with voussoir support 20, torsion spring 19 is provided between the voussoir 12 and voussoir rotating shaft 18, it is described
The upside of voussoir 12 is in contact with seat cushion supporting plate 1.Voussoir rotating shaft 18 and torsion spring 19 are added between voussoir 12 and voussoir support so that
During 12 times press contacts of voussoir regulation litter 9, voussoir 12, which has, certain upwarps angle so that between voussoir 12 and regulation litter 9
Direct stress angle becomes big, so that direct stress diminishes, preventing that body weight is overweight causes the friction between voussoir 12 and regulation litter 9
Power is excessive even more so that regulation litter 9 is deformed.
When people is sat on seat, seat cushion supporting plate 1 is pushed by the power pushed, voussoir 12, and regulation litter 9 causes pulling force bullet
Spring 8 is stretched, and the level of stretch of people's tension spring 8 of body weight more weight is bigger, due to the degree of drawing of tension spring 8 be it is limited, according to
Body weight is after the scope of drawn one, so that tension spring 8 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 improved, 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 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, which 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 backrest rigidity can be automatically adjusted 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 adds the rigidity of backrest.Therefore, backrest of the invention is not present 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. a kind of seat tray for automatically adjusting backrest rigidity, 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 between wing plate, the wing plate and is provided with base, 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 are set
There is the chute being adapted with connector rotating shaft, the connector rotating shaft or so is 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
Pad and be provided with from bottom to top between supporting plate compression spring and voussoir, the wedge surface of the voussoir is with adjusting 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 is turned by voussoir
Axle is connected with voussoir bracket slide, is provided between voussoir and the voussoir rotating shaft on the upside of torsion spring, the voussoir and seat cushion supporting plate phase
Contact.
2. a kind of seat tray for automatically adjusting backrest rigidity according to claim 1, 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. a kind of seat tray for automatically adjusting backrest rigidity according to claim 1 or 2, 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. a kind of seat tray for automatically adjusting backrest rigidity according to claim 3, 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. a kind of seat tray for automatically adjusting backrest rigidity according to claim 3, 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 with a driving lever to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710109357.7A CN106937798A (en) | 2017-02-27 | 2017-02-27 | A kind of seat tray for automatically adjusting backrest rigidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710109357.7A CN106937798A (en) | 2017-02-27 | 2017-02-27 | A kind of seat tray for automatically adjusting backrest rigidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106937798A true CN106937798A (en) | 2017-07-11 |
Family
ID=59469919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710109357.7A Pending CN106937798A (en) | 2017-02-27 | 2017-02-27 | A kind of seat tray for automatically adjusting backrest rigidity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106937798A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604228Y (en) * | 2002-12-06 | 2004-02-25 | 廖世奇 | Rice mill with wedge type pressure regulating mechanism |
| CN201360761Y (en) * | 2009-03-05 | 2009-12-16 | 陈千奎 | Locking mechanism of chair chassis |
| CN204635613U (en) * | 2015-03-27 | 2015-09-16 | 浙江永艺家具股份有限公司 | A kind of anti-tipping support |
| 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 |
| ES2596510A1 (en) * | 2016-08-02 | 2017-01-10 | Actiu Berbegal Y Formas S.A. | Device for tilting the backrest of office chairs (Machine-translation by Google Translate, not legally binding) |
-
2017
- 2017-02-27 CN CN201710109357.7A patent/CN106937798A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604228Y (en) * | 2002-12-06 | 2004-02-25 | 廖世奇 | Rice mill with wedge type pressure regulating mechanism |
| CN201360761Y (en) * | 2009-03-05 | 2009-12-16 | 陈千奎 | Locking mechanism of chair chassis |
| 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 |
| CN204635613U (en) * | 2015-03-27 | 2015-09-16 | 浙江永艺家具股份有限公司 | A kind of anti-tipping support |
| ES2596510A1 (en) * | 2016-08-02 | 2017-01-10 | Actiu Berbegal Y Formas S.A. | Device for tilting the backrest of office chairs (Machine-translation by Google Translate, not legally binding) |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170711 |