CN204181249U - For the elasticity reset device of Revolving chair chassis - Google Patents
For the elasticity reset device of Revolving chair chassis Download PDFInfo
- Publication number
- CN204181249U CN204181249U CN201420539160.9U CN201420539160U CN204181249U CN 204181249 U CN204181249 U CN 204181249U CN 201420539160 U CN201420539160 U CN 201420539160U CN 204181249 U CN204181249 U CN 204181249U
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- spring
- bearing pin
- bracket
- seesaw
- connecting rod
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Abstract
The utility model discloses a kind of elasticity reset device for Revolving chair chassis, comprise base, bracket, seesaw, spring and be symmetricly set on first connecting rod, the second connecting rod of seesaw front part sides, bracket is arranged in base, seesaw is arranged in bracket, one end of first connecting rod and seesaw front end are by the 4th hinge, one end of spring is connected with the 4th bearing pin, and the other end of spring hooks base.4th bearing pin can follow movement of bracket, and be connected with the 4th bearing pin by spring one end, the spring other end is connected with fixed base, and the reply being bracket by spring provides restoring force, and structure is effective simply again.
Description
Technical field
The utility model relates to swivel chair, office chair technical field, particularly a kind of elasticity reset device for Revolving chair chassis.
Background technology
Revolving chair chassis, also claims Revolving chair tray, is the vitals be contained in below swivel chair seat cushion, the lifting of seat cushion, and the elevation angle of backrest regulates and all relies on chassis.
Current Revolving chair tray is generally made up of parts such as top tray, lower joist, rotating shaft and spring assemblies, and after top rotary table and swivel chair seat back are fixed, swivel chair can do suitable reclining around the shaft, and can initiatively reply, and makes user have comfort.Such as, Chinese patent discloses a kind of pallet, and (patent No. is: 02287885.8), mainly comprise base plate, sliding seat, conical pipe and adjusting device, sliding seat is movably connected in base plate, in the middle of sliding seat, connect the conical pipe of air pressure rod, be welded on together with conical pipe in sliding seat by Taper Pipe fixed head; Described adjusting device includes adjusting rod, adjustable plate, torsion spring a, torsion spring a fixed head, adjusting rod interts in sliding seat, adjustable plate is fixedly connected on the one end in adjusting rod insertion sliding seat, the one side contact air pressure rod of adjustable plate, and another side is connected with torsion spring a; The another side of adjustable plate is provided with spin-ended of adjustable plate.
The adjusting device of above-mentioned Revolving chair tray regulates by torque spring completely, and for the people that body weight is different, the power of required torque spring needs different, makes product not have good versatility.For this problem, the patent No. is: the Chinese patent of " 201020264417.6 " discloses a kind of adjustable revolving chair tray of rolling shaft, it utilizes the restoring force that the gravity conduction being carried in seat surface is backrest, and the people that substantially can realize meeting different weight uses and do not need to regulate.But be sitting in above-mentioned pallet is installed seat on backward reclining time, due to human body parts gravity by back rest supports and proportion progressively increase, the gravity being carried in seat surface is progressively diminished, the restoring force that then gravity is transmitted to backrest diminishes thereupon, cause the backrest restoring force when maximum reclining angle not enough, restoring force too relies on the elastic recovery of elasticity reset device, therefore the crowd that is suitable for is limited in scope, the people that body weight is lighter is difficult to reclining, be difficult to reply after people's reclining that body weight is heavier stand up, most Proper Match restoring force cannot be reached.
A kind of Revolving chair chassis of special R & D design, comprise the base connecting gas bar, in order to the bracket of fixing seat support and the seesaw in order to connect the chair back, bracket is arranged in base, seesaw is arranged in bracket, be installed with the first bearing pin in the middle part of seesaw and seesaw with the first bearing pin for rotating fulcrum, first bearing pin passes bracket and is connected with base, the bilateral symmetry of seesaw front portion is provided with first connecting rod, second connecting rod, one end of first connecting rod and seesaw front end are by the 4th hinge, the other end of first connecting rod and one end of second connecting rod by the 3rd hinge and the 3rd bearing pin be connected with bracket, the other end of second connecting rod is installed with the second bearing pin and the second bearing pin passes or is connected with base after avoiding bracket, the rail groove in order to guide bracket movement locus coordinated with the first bearing pin is offered in the bilateral symmetry of bracket, first bearing pin is located in rail groove.
Above-mentioned chassis principle adopts four-point linkage mechanism, and form the conduction of power, be rotating fulcrum in the middle part of seesaw, seesaw rear portion overturns under the effect of the chair back, seesaw front portion by linkage and bracket hinged and prize bracket obliquely, bracket and seesaw are formed and link; Specifically, when seesaw is turned over, first bearing pin, between the second bearing pin and base, do not produce any relative displacement, only with bracket generation relative motion, seesaw front end upwards drags first connecting rod and moves upward, and the 3rd bearing pin of first connecting rod and second connecting rod hinged place pulls bracket to move towards the oblique upper close to seesaw, and the movement locus of bracket carries out along rail groove exactly.
In this conducting structure, the chair back is connected and fixed on the driving force of seesaw as four-point linkage mechanism, the gravity that human body puts on seat support forms by the pin joint of four-point linkage mechanism and bracket the restoring force being applied to four-point linkage mechanism, and the driving force of four-point linkage mechanism and restoring force form Antagonistic Relationship; Therefore restoring force relies on less to the elastic-restoring force of elasticity reset device, is suitable for crowd wider, and the lighter or heavier people of body weight can stand up like a cork in reclining and reply.
But in order to enable chassis play its complete effect, and bracket, the chair back are resetted when people does not lean on the chair back, so need design elasticity reset device.
Utility model content
The utility model overcomes deficiency existing in above-mentioned prior art, provides one and chassis can be enable to play its complete effect, and the elasticity reset device that can reset to bracket, the chair back when people does not lean on the chair back.
The technical solution of the utility model is achieved in that
A kind of elasticity reset device for Revolving chair chassis, comprise base, bracket, seesaw, spring and be symmetricly set on first connecting rod, the second connecting rod of seesaw front part sides, bracket is arranged in base, seesaw is arranged in bracket, one end of first connecting rod and seesaw front end are by the 4th hinge, one end of spring is connected with the 4th bearing pin, and the other end of spring hooks base.
For making enough support strengths, as preferably, the 4th described bearing pin is one whole major axis, and the two ends of the 4th bearing pin are connected with one end of first connecting rod and seesaw front end separately respectively.
As preferably, the position that the other end of spring is connected with base is in the base rear end region away from first connecting rod, second connecting rod.The benefit of such setting is: when seesaw rotates, the 4th bearing pin rotates around the first bearing pin, drives spring elongation.In this process, spring diminishes gradually relative to the arm of force (namely the first bearing pin is perpendicular to the distance of spring axis) of the first bearing pin, and the changes in amplitude of spring elongation is comparatively large thus make pulling force increase larger, by the matching relationship of spring tension and the arm of force, make in spring elongation process, spring evenly increases relative to the moment of the first bearing pin, the restoring force being transmitted to the chair back also increases gradually, people is in reclining process backward, the support force that back receives the chair back is even, experience pleasant, there will not be each stage restoring force of reclining backward too small or excessively cause uncomfortable problem.
As preferably, on the 4th bearing pin, cover has plastic bushing, and one end of spring hangs on plastic bushing.Can avoid the grating between metal thus, when making to use, overall experience is felt good.
As preferably, described spring is 1 ~ 4.Can arrange in conjunction with factors such as spring damping coefficient, space sizes.
The beneficial effects of the utility model that have employed technique scheme are:
3rd bearing pin is connected with bracket, and the 3rd bearing pin is synchronized with the movement with bracket, so the 4th bearing pin also can follow movement of bracket, spring one end is connected with the 4th bearing pin, the spring other end is connected with fixed base, the reply being bracket by spring provides restoring force, and structure is effective simply again.
Again furtherly, the position that spring is connected with base is in the base rear end region away from first connecting rod, second connecting rod; The benefit of such setting is: when seesaw rotates, the 4th bearing pin rotates around the first bearing pin, drives spring elongation.In this process, spring diminishes gradually relative to the arm of force (namely the first bearing pin is perpendicular to the distance of spring axis) of the first bearing pin, and the changes in amplitude of spring elongation is comparatively large thus make pulling force increase larger, by the matching relationship of spring tension and the arm of force, make in spring elongation process, spring evenly increases relative to the moment of the first bearing pin, the restoring force being transmitted to the chair back also increases gradually, people is in reclining process backward, the support force that back receives the chair back is even, experience pleasant, there will not be each stage restoring force of reclining backward too small or excessively cause uncomfortable problem.
Accompanying drawing explanation
Fig. 1 is the structural representation on chassis in embodiment;
Fig. 2 is the explosive view of Fig. 1.
Detailed description of the invention
Detailed description of the invention of the present utility model is as follows:
Embodiment: the reference azimuth first defining each parts of the utility model, the present invention by chassis and swivel chair when normal mounting uses, the front of swivel chair is front end, and the position that the rear of swivel chair comprises backrest place is rear end, the front end on chassis is the region away from seesaw, and the rear end on chassis is the region near seesaw.
For an elasticity reset device for Revolving chair chassis, as shown in Figure 1, 2, comprise spring 19, in order to connect gas bar base 1, in order to the bracket 2 of fixing seat support and the seesaw 3 in order to connect the chair back, bracket 2 is arranged in base 1, and seesaw 3 is arranged in bracket 2; Be installed with the first bearing pin 11 in the middle part of seesaw 3 and seesaw with the first bearing pin 11 for rotating fulcrum, first bearing pin 11 passes bracket 2 and is connected with base 1, the bilateral symmetry of seesaw 3 front portion is provided with first connecting rod 13, second connecting rod 14, first connecting rod 13 described is from lower to upper obliquely installed towards the direction close to seesaw 3, and second connecting rod 14 described is from lower to upper obliquely installed towards the direction deviating from seesaw 3.
It is hinged that the 4th bearing pin 16 is passed through in one end of first connecting rod 13 and seesaw 3 front end, the other end of first connecting rod 13 and one end of second connecting rod 14 are hinged and the 3rd bearing pin 15 interts in bracket 2 by the 3rd bearing pin 15, and the other end of second connecting rod 14 is installed with the second bearing pin 12 and second bearing pin 12 is plugged in base 1 through bracket 2; Because seesaw 3 drives bracket 2 to move by connecting rod, so offer the rail groove 17 in order to guide bracket 2 movement locus coordinated with the first bearing pin 11 and the hollow slots 18 in order to dodge the second bearing pin 12 when bracket 2 moves coordinated with the second bearing pin 12 in each symmetry in the both sides of bracket 2, rail groove 17 is also to make the first bearing pin 11, second bearing pin 12 can be located in respectively in rail groove and hollow slots through bracket 2, first bearing pin 11, second bearing pin 12 with offering of hollow slots 18.
3rd bearing pin 15 is two independently bearing pins, and the 4th described bearing pin 16 is one whole major axis, and the two ends of the 4th bearing pin 16 are connected with one end of first connecting rod 13 and seesaw 3 front end separately respectively.
Simultaneously, 4th bearing pin 16 linking springs 19, one end of spring 19 is connected with the 4th bearing pin 16, the other end of spring 19 hooks base 1, specifically, the position that the other end of spring 19 is connected with base 1 is in base 1 back-end region away from first connecting rod 13, second connecting rod 14, and be fixed with hook 54 in base 1 back-end region position, the other end of spring 19 hangs on described hook 54.
For avoiding Metal Contact to send sound, on the 4th bearing pin 16, cover has plastic bushing 55, and one end of spring 19 hangs on plastic bushing 55, and the quantity of spring 19 can be selected according to actual needs.
Claims (5)
1. the elasticity reset device for Revolving chair chassis, it is characterized in that: comprise base, bracket, seesaw, spring and be symmetricly set on first connecting rod, the second connecting rod of seesaw front part sides, bracket is arranged in base, seesaw is arranged in bracket, one end of first connecting rod and seesaw front end are by the 4th hinge, one end of spring is connected with the 4th bearing pin, and the other end of spring hooks base.
2. the elasticity reset device for Revolving chair chassis according to claim 1, is characterized in that: the 4th described bearing pin is one whole major axis, and the two ends of the 4th bearing pin are connected with one end of first connecting rod and seesaw front end separately respectively.
3. the elasticity reset device for Revolving chair chassis according to claim 1, is characterized in that: the position that the other end of spring is connected with base is in the base rear end region away from first connecting rod, second connecting rod.
4. the elasticity reset device for Revolving chair chassis according to claim 1, is characterized in that: on the 4th bearing pin, cover has plastic bushing, and one end of spring hangs on plastic bushing.
5. the elasticity reset device for Revolving chair chassis according to claim 1, is characterized in that: described spring is 1 ~ 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539160.9U CN204181249U (en) | 2014-09-18 | 2014-09-18 | For the elasticity reset device of Revolving chair chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539160.9U CN204181249U (en) | 2014-09-18 | 2014-09-18 | For the elasticity reset device of Revolving chair chassis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204181249U true CN204181249U (en) | 2015-03-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420539160.9U Active CN204181249U (en) | 2014-09-18 | 2014-09-18 | For the elasticity reset device of Revolving chair chassis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204181249U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107625324A (en) * | 2016-07-18 | 2018-01-26 | 永艺家具股份有限公司 | A kind of chair bottom and office chair |
| CN108669870A (en) * | 2018-06-05 | 2018-10-19 | 王杰 | Office seating |
-
2014
- 2014-09-18 CN CN201420539160.9U patent/CN204181249U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107625324A (en) * | 2016-07-18 | 2018-01-26 | 永艺家具股份有限公司 | A kind of chair bottom and office chair |
| CN107625324B (en) * | 2016-07-18 | 2024-04-12 | 永艺家具股份有限公司 | Office chair chassis and office chair |
| CN108669870A (en) * | 2018-06-05 | 2018-10-19 | 王杰 | Office seating |
| CN108669870B (en) * | 2018-06-05 | 2020-04-17 | 江西圣盛教育装备有限公司 | Office chair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 313300 Zhejiang City, Huzhou Province, Anji County, West Wing Road, No. 1 Patentee after: UE FURNITURE CO., LTD. Address before: 313300 Zhejiang City, Huzhou Province, Anji County, West Wing Road, No. 1 Patentee before: Zhejiang Yongyi Furniture Co.,Ltd. |