CN103479120B - A kind of chair back wane lock mechanism - Google Patents
A kind of chair back wane lock mechanism Download PDFInfo
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- CN103479120B CN103479120B CN201310438112.0A CN201310438112A CN103479120B CN 103479120 B CN103479120 B CN 103479120B CN 201310438112 A CN201310438112 A CN 201310438112A CN 103479120 B CN103479120 B CN 103479120B
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- lockhole
- fixture block
- torsion spring
- latch
- driving lever
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- 230000000694 effects Effects 0.000 claims description 5
- 238000003756 stirring Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 230000037396 body weight Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003042 antagnostic effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention discloses a kind of chair back wane lock mechanism, comprise the row's lockhole be symmetricly set on seesaw both sides, be symmetricly set on two torsion springs of chassis interior both sides, two latches and two plug housings; Plug housing is fixedly installed on base, and latch slides and to intert on plug housing and to coordinate with lockhole, and the first spring arm of torsion spring is connected with latch, and the second spring arm of torsion spring is connected to a drive unit for driving torsion spring to carry out back rotation.The present invention is respectively provided with row's lockhole in seesaw both sides, two latches are provided with in the other correspondence of lockhole, latch rotates according to torsion spring to realize stirring to reach the object inserting or exit lockhole, and the rotatory force of two torsion springs comes from same driving lever, make to stir locking, the unlocking motion that a driving lever just can realize two latches, structure is simplified and ingenious, easy to use.
Description
Technical field
The present invention relates to swivel chair, office chair technical field, particularly a kind of chair back wane lock mechanism.
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, torsion spring fixed head, and adjusting rod interts in sliding seat, and 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; 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, best restoring force cannot be reached.
A kind of Revolving chair chassis of special R & D design, comprise connecting the base of 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, and seesaw is arranged in bracket, and bracket is connected with elasticity reset device, its principle adopts four-point linkage mechanism, the conduction of formation power, be rotating fulcrum in the middle part of seesaw, seesaw rear portion overturns under the effect of the chair back, seesaw anterior by linkage and bracket hinged and prize bracket obliquely, bracket and seesaw are formed and link; 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 some people wishes seat back lock to identify oneself comfortable position at one, to carry out lunch break or to have a rest for a long time, so need to design a kind of seesaw locking mechanism to solve this problem, original intention seesaw is locked in a position identifying oneself suitable, has also just been fixed on by the chair back on corresponding position.
Summary of the invention
Instant invention overcomes deficiency existing in above-mentioned prior art, provide a kind of seesaw locking mechanism that can lock the swivel chair chair back, thus can by seat back lock in any one fixing angle.
Technical scheme of the present invention is achieved in that
A kind of chair back wane lock mechanism, comprises the row's lockhole be symmetricly set on seesaw both sides, is symmetricly set on two torsion springs of chassis interior both sides, two latches and two plug housings; Plug housing is fixedly installed on base, and latch slides and to intert on plug housing and to coordinate with lockhole, and the first spring arm of torsion spring is connected with latch, and the second spring arm of torsion spring is connected to a drive unit for driving torsion spring to carry out back rotation.By above-mentioned locking mechanism, the chair back can be fixed on the position that certain user feels comfortably cool.
As preferably, described drive unit comprises crank, positioning seat and driving lever, positioning seat and base are fixedly linked, positioning seat is arch and inner hollow, the upper end of positioning seat inside is provided with one to the projection of downward-extension, positioning seat inner upper end is divided into two locating slots by protruding arranging, fixture block is provided with in positioning seat, the upper end of fixture block is stuck in locating slot, the two ends of crank are connected with the second spring arm of two torsion springs, and crank connects fixture block by rocking bar, one end of driving lever is fixedly linked through base and fixture block, and the other end of driving lever is exposed to outside base; Driving lever is stirred in front and back, fixture block is made to move on in another locating slot from a locating slot, fixture block rotating band shakes mobile, thus drive two torsion springs to rotate simultaneously, under the elastic force effect of torsion spring, the first spring arm pulls latch to insert corresponding lockhole or in lockhole, exits to realize locking, the unblock of latch.Adopt same driving lever to realize locking, the unlocking motion of two latches, structure is simplified and ingenious, easy to use.
As preferably, described drive unit also comprises two in order to install the column of torsion spring, each column upper end has screwed a screw, torsion spring set is located on screw, column lower end is put up a bridge by an arch and base is fixedly linked, arch is put up a bridge and is formed axis hole between base end face, and driving lever is put up a bridge through one of them arch and is connected with fixture block.
Have employed the design starting point of the present invention of technique scheme, theory and beneficial effect is:
The present invention is respectively provided with row's lockhole in seesaw both sides, two latches are provided with in the other correspondence of lockhole, latch rotates according to torsion spring to realize stirring to reach the object inserting or exit lockhole, and the rotatory force of two torsion springs comes from same driving lever, make to stir locking, the unlocking motion that a driving lever just can realize two latches, structure is simplified and ingenious, easy to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of chair back wane lock mechanism;
Fig. 2 is the schematic diagram that the latch of chair back wane lock mechanism is in unlocked state;
Fig. 3 is the schematic diagram that the latch of chair back wane lock mechanism is in initial angle lock-out state;
Fig. 4 is the schematic diagram that the latch of chair back wane lock mechanism is in maximum angle lock-out state;
Fig. 5 is the structural representation of another angle of chair back wane lock mechanism;
Fig. 6 is the fit structure schematic diagram of crank, positioning seat and fixture block in drive unit under latch released state;
Fig. 7 is the fit structure schematic diagram of crank, positioning seat and fixture block in drive unit under latch locking state.
Detailed description of the invention
The specific embodiment of the present invention is as follows:
Embodiment: the reference azimuth first defining each parts of the present invention, 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.
As shown in Fig. 1 ~ 7, chair back wane lock mechanism of the present invention comprises the row's lockhole 21 be symmetricly set on seesaw 3 both sides, is symmetricly set on two torsion springs, 22, two latches 23 and two plug housings 24 of the inner both sides of base 1; Plug housing 24 is fixedly installed on base 1, and latch 23 slides and to intert on plug housing 24 and to coordinate with lockhole 21, and the first spring arm 25 of torsion spring 22 is connected with latch 23, and the second spring arm 26 of torsion spring 22 is connected to a drive unit for driving torsion spring 22 to carry out back rotation.
Described drive unit comprises crank 27, positioning seat 28 and driving lever 29, positioning seat 28 and base 1 are fixedly linked, positioning seat 28 is arch and inner hollow, the upper end of positioning seat 28 inside is provided with one to the curved projection 30 of downward-extension, positioning seat 28 inner upper end is divided into two locating slots 31 by protruding 30 arrange, fixture block 35 is provided with in positioning seat 28, fixture block 35 is the large structure in little bottom, top, the lower cross section of fixture block 35 is circular, fixture block 35 top is tapered, and the sectional area of fixture block 35 reduces from bottom to top gradually, the upper end of fixture block 35 is stuck in locating slot 31, the two ends of crank 27 are connected with the second spring arm 26 of two torsion springs 22, and crank 27 connects fixture block 35 by rocking bar 32, one end of driving lever 29 is fixedly linked with fixture block 35 through the gripper shoe 5 of base 1, the other end of driving lever 29 is exposed to outside base 1, driving lever 29 is stirred in front and back, fixture block 35 is made to move on in another locating slot 31 from a locating slot 31, fixture block 35 rotating band shakes and moves 27, thus drive two torsion springs 22 to rotate simultaneously, under the elastic force effect of torsion spring 22, the first spring arm 25 pulls latch 23 to insert corresponding lockhole 21 or in lockhole 21, exits to realize locking, the unblock of latch 23.
Described drive unit also comprises two in order to install the column 33 of torsion spring 22, each column 33 upper end has screwed a screw 39, torsion spring 22 is set on screw 39, column 33 lower end is fixedly linked with the base plate 4 of base 1 by an arch bridging 34, arch is put up a bridge between 34 and base 1 bottom surface and is formed axis hole 40, and driving lever 29 is connected with fixture block 35 through one of them arch bridging 34.Meanwhile, this chassis also comprises one in order to control the depression bar 38 of gas bar, and this depression bar 38 rides over the installed position of gas bar through turning round after another arch bridging 34 again through base.
As shown in Figure 2, when being in unlocked state, latch 23 departs from lockhole 21, and now, people sits on the seat, can with the arbitrarily angled dependence chair back; As shown in Fig. 3,7, when being in the initial position that do not lean on and making it to be in the lock state, stir driving lever 29, the resistance making the upper end of fixture block 35 overcome protruding 30 moves on in left side locating slot 31 from the locating slot 31 on the right, fixture block 35 rotating band shakes and moves 27, thus drive two torsion springs 22 to rotate simultaneously, under the elastic force effect of torsion spring 22, the first spring arm 25 pulls latch 23 to insert in corresponding lockhole 21 to realize the locking of latch 23.When needing the adjustment chair back to suitable position, stir driving lever 29 in the other direction, as shown in Fig. 2, Fig. 6, the resistance making the upper end of fixture block 35 overcome protruding 30 moves on in the locating slot 31 of the right from the locating slot 31 on the left side, and torsion spring 22 rotating drive latch 23 is exited in lockhole 21, now, the chair back can being leaned on to suitable position, when needing to remain on this suitable position, then repeating action above, make latch 23 insert corresponding lockhole 21, realize locking.
Fig. 3 shows when the non-reclining of the chair back, and latch 23 inserts a jack topmost and realizes locking; As shown in Figure 4, when the chair back is in maximum elevation angle and is locked, latch 23 inserts a bottom jack.
It should be noted that, backrest bracket locking mechanism is not limited only to above-mentioned mechanical mechanism, and gas bar can also be adopted to lock at an arbitrary position; Elasticity reset device is except employing metal spring, and can also adopt rubber spring or gas bar, also can be the combination of metal spring, the gentle bar of rubber spring.
Claims (2)
1. a chair back wane lock mechanism, is characterized in that: comprise the row's lockhole be symmetricly set on seesaw both sides, be symmetricly set on two torsion springs of chassis interior both sides, two latches and two plug housings; Plug housing is fixedly installed on base, and latch slides and to intert on plug housing and to coordinate with lockhole, and the first spring arm of torsion spring is connected with latch, and the second spring arm of torsion spring is connected to a drive unit for driving torsion spring to carry out back rotation; Described drive unit comprises crank, positioning seat and driving lever, positioning seat and base are fixedly linked, positioning seat is arch and inner hollow, the upper end of positioning seat inside is provided with one to the projection of downward-extension, positioning seat inner upper end is divided into two locating slots by protruding arranging, fixture block is provided with in positioning seat, the upper end of fixture block is stuck in locating slot, the two ends of crank are connected with the second spring arm of two torsion springs, and crank connects fixture block by rocking bar, one end of driving lever is fixedly linked through base and fixture block, and the other end of driving lever is exposed to outside base; Driving lever is stirred in front and back, fixture block is made to move on in another locating slot from a locating slot, fixture block rotating band shakes mobile, thus drive two torsion springs to rotate simultaneously, under the elastic force effect of torsion spring, the first spring arm pulls latch to insert corresponding lockhole or in lockhole, exits to realize locking, the unblock of latch.
2. a kind of chair back wane lock mechanism according to claim 1, it is characterized in that: described drive unit also comprises two in order to install the column of torsion spring, each column upper end has screwed a screw, torsion spring set is located on screw, column lower end is put up a bridge by an arch and base is fixedly linked, arch is put up a bridge and is formed axis hole between base end face, and driving lever is put up a bridge through one of them arch and is connected with fixture block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310438112.0A CN103479120B (en) | 2013-09-24 | 2013-09-24 | A kind of chair back wane lock mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310438112.0A CN103479120B (en) | 2013-09-24 | 2013-09-24 | A kind of chair back wane lock mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN103479120A CN103479120A (en) | 2014-01-01 |
| CN103479120B true CN103479120B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310438112.0A Active CN103479120B (en) | 2013-09-24 | 2013-09-24 | A kind of chair back wane lock mechanism |
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| Country | Link |
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| CN (1) | CN103479120B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1358821A1 (en) * | 2002-04-30 | 2003-11-05 | Klöber Gmbh & Co. | Office chair with a user-weight-dependent energy storage device |
| CN101686761A (en) * | 2007-02-27 | 2010-03-31 | 株式会社冈村制作所 | Lock device for movable member of chair |
| CN102846068A (en) * | 2012-09-18 | 2013-01-02 | 浙江永艺家具股份有限公司 | Rotary chair chassis |
| CN203555410U (en) * | 2013-09-24 | 2014-04-23 | 浙江永艺家具股份有限公司 | Chair back warped plate locking mechanism |
-
2013
- 2013-09-24 CN CN201310438112.0A patent/CN103479120B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1358821A1 (en) * | 2002-04-30 | 2003-11-05 | Klöber Gmbh & Co. | Office chair with a user-weight-dependent energy storage device |
| CN101686761A (en) * | 2007-02-27 | 2010-03-31 | 株式会社冈村制作所 | Lock device for movable member of chair |
| CN102846068A (en) * | 2012-09-18 | 2013-01-02 | 浙江永艺家具股份有限公司 | Rotary chair chassis |
| CN203555410U (en) * | 2013-09-24 | 2014-04-23 | 浙江永艺家具股份有限公司 | Chair back warped plate locking mechanism |
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| Publication number | Publication date |
|---|---|
| CN103479120A (en) | 2014-01-01 |
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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 UE FURNITURE Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A chair back rocker locking mechanism Effective date of registration: 20210914 Granted publication date: 20151202 Pledgee: China Co. truction Bank Corp Anji branch Pledgor: UE FURNITURE Co.,Ltd. Registration number: Y2021330001547 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Date of cancellation: 20221201 Granted publication date: 20151202 Pledgee: China Co. truction Bank Corp Anji branch Pledgor: UE FURNITURE Co.,Ltd. Registration number: Y2021330001547 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A locking mechanism for seat back rocker Effective date of registration: 20221215 Granted publication date: 20151202 Pledgee: Anji Zhejiang rural commercial bank Limited by Share Ltd. Pledgor: UE FURNITURE Co.,Ltd. Registration number: Y2022330003686 |
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