CN2778086Y - A chair possessing back-rest adjustable device - Google Patents
A chair possessing back-rest adjustable device Download PDFInfo
- Publication number
- CN2778086Y CN2778086Y CN 200520055831 CN200520055831U CN2778086Y CN 2778086 Y CN2778086 Y CN 2778086Y CN 200520055831 CN200520055831 CN 200520055831 CN 200520055831 U CN200520055831 U CN 200520055831U CN 2778086 Y CN2778086 Y CN 2778086Y
- Authority
- CN
- China
- Prior art keywords
- backrest
- adjusting device
- chair
- utility
- model
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Chairs Characterized By Structure (AREA)
Abstract
The utility model relates to the technical field of a chair, particularly a backrest chair with a backrest adjusting device. The utility model comprises a backrest and a bottom frame, wherein an adjusting device is installed between a cross beam of the backrest and a base of the bottom frame. The adjusting device is mainly composed of two blocks of elastic metal plates which are mutually connected through threads, and a returning device is installed at the bottoms of the elastic metal plates. The returning device is a return spring which is sheathed on a screw, and is packed with a protective cover which is spirally connected with the screw. The utility model overcomes the disadvantages that a backrest can not be adjusted because the traditional backrest chair adopts the mode that the backrest is fixedly connected with armrests. The adoption of the mode that the backrest is connected with the bottom frame by the adjusting device achieves the effects of simple structure, low cost and adjustable backrest.
Description
Technical field:
The utility model relates to the chair technical field, refers in particular to a kind of chair with backrest adjusting device.
Background technology:
Along with the development of society and the raising of living standards of the people, the level of comfort of life appliance has become an important indicator weighing its value, and chair is people live in requisite life appliance, traditional chair is when making, its backrest is that the handrail by screw or other connectors and chair is fixed together, to increase the backrest stability.Therefore, the user can not regulate its position and angle when using these chairs, and health also just can't be unfolded backward.Though some the high-grade chairs on the market have increased the chassis that can regulate rotation in the bottom of its chair now, its cost cost has improved a lot, is that common consumer is difficult to bear.
Summary of the invention:
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of simple in structure, production cost is low, seating is comfortable chair with backrest adjusting device is provided.
For achieving the above object, the technical scheme that the utility model provides is: it includes backrest, underframe, between the base of the crossbeam of backrest and underframe an adjusting device is installed.
Described adjusting device mainly is made of two elastic metal sheets that are spirally connected mutually, in the bottom of elastic metal sheet return mechanism is installed.
Described return mechanism is suit one returning spring on a screw rod, and is screwed in encapsulation together on the screw rod with a protective cover.
The utility model has overcome the mode of traditional chair because of adopting backrest and handrail to be connected and fixed, and can't adjust the shortcoming of backrest, employing by between backrest and the underframe by the adjusting device ways of connecting, reached simple in structure, cost is low, the adjustable effect of backrest.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is described further,
Accompanying drawing 1 is the utility model structural representation;
Accompanying drawing 2 is the structural representation of the utility model adjusting device.
The specific embodiment:
See shown in accompanying drawing 1～accompanying drawing 2 that preferred embodiment of the present utility model includes a backrest 10, underframe 20 and handrail, between the base 21 of the crossbeam 11 of backrest 10 and underframe 20, an adjusting device 30 is installed.This adjusting device 30 is screwed onto on crossbeam 11 and the base 21 by screw, and this adjusting device 30 mainly is made of two elastic metal sheets that are spirally connected mutually 31 and 32, in the bottom of elastic metal sheet 32 return mechanism 33 is installed.This return mechanism 33 is suit one returning spring 332 on a screw rod 331, and is screwed on the screw rod 331 and returning spring 332 encapsulates together with a protective cover 333.
When the user is sitting on the chair, stretch backward if think, then only need lean against on the backrest 10 backward, at this moment, elastic metal sheet 31 deformation, returning spring 332 shrinks simultaneously, backrest 10 is opened with certain angle backward, be convenient to lean on behind the user, in the time of before user's health hectare, elastic metal sheet 31 and returning spring 332 reinstatements.
The embodiment of the above is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model with this, so the equivalence that all shapes according to the utility model, structure and principle are done changes, all should be covered by in the protection domain of the present utility model.
Claims (3)
1, a kind of chair with backrest adjusting device includes backrest (10), underframe (20), it is characterized in that: between the base (21) of the crossbeam (11) of backrest (10) and underframe (20) adjusting device (30) is installed.
2, a kind of chair according to claim 1 with backrest adjusting device, it is characterized in that: described adjusting device (30) mainly is made of two elastic metal sheets that are spirally connected mutually (31) and (32), in the bottom of elastic metal sheet (32) return mechanism (33) is installed.
3, a kind of chair according to claim 2 with backrest adjusting device; it is characterized in that: described return mechanism (33) is for going up suit one returning spring (332) at a screw rod (331), and is screwed in the last and returning spring (332) of screw rod (331) with a protective cover (333) and encapsulates together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055831 CN2778086Y (en) | 2005-03-22 | 2005-03-22 | A chair possessing back-rest adjustable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055831 CN2778086Y (en) | 2005-03-22 | 2005-03-22 | A chair possessing back-rest adjustable device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2778086Y true CN2778086Y (en) | 2006-05-10 |
Family
ID=36752175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520055831 Expired - Fee Related CN2778086Y (en) | 2005-03-22 | 2005-03-22 | A chair possessing back-rest adjustable device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2778086Y (en) |
-
2005
- 2005-03-22 CN CN 200520055831 patent/CN2778086Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201675484U (en) | Sofa with headrest | |
| CN2894442Y (en) | Cying-sitting two-purpose chair | |
| CN200973532Y (en) | New type chair | |
| CN201929455U (en) | Chair for rectifying sitting posture | |
| CN2778086Y (en) | A chair possessing back-rest adjustable device | |
| CN205513570U (en) | Sofa with massage function | |
| CN201814165U (en) | Multifunctional chair | |
| CN2798723Y (en) | Arm-chair capable of increasing back-rest extension angle | |
| CN202027187U (en) | Omni-direction multifunctional adjustable headrest | |
| CN201718807U (en) | Office chair | |
| CN2779981Y (en) | Manager chair | |
| CN201019313Y (en) | Back of chair | |
| CN201480642U (en) | Chair with elastic backrest | |
| CN201911672U (en) | Height adjusting device for chair armrests | |
| CN202959547U (en) | Multifunctional sling chair | |
| CN208339280U (en) | A kind of high-grade sofa that can arbitrarily adjust back cushion height | |
| CN202060318U (en) | Multi-functional drawing type seat cushion for waist rest and head rest | |
| CN201831353U (en) | Moso bamboo chair | |
| CN220423542U (en) | Armrest and chair convenient to adjust | |
| CN202525609U (en) | Chair with inflatable cushion | |
| CN201767476U (en) | Chair with headrest | |
| CN102293538A (en) | Improved office chair | |
| CN201870154U (en) | Multifunctional chair | |
| CN201480674U (en) | Double-purpose chair | |
| CN201211017Y (en) | Multifunctional chair |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060510 |