CN107397364A - Damper regulation mechanism for leisure chaise longue - Google Patents
Damper regulation mechanism for leisure chaise longue Download PDFInfo
- Publication number
- CN107397364A CN107397364A CN201610364765.2A CN201610364765A CN107397364A CN 107397364 A CN107397364 A CN 107397364A CN 201610364765 A CN201610364765 A CN 201610364765A CN 107397364 A CN107397364 A CN 107397364A
- Authority
- CN
- China
- Prior art keywords
- fixture block
- slide bar
- regulation
- damper
- chaise longue
- 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.)
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
- A47C1/027—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of clamps or friction locking members
Abstract
The present invention relates to a kind of damper regulation mechanism for leisure chaise longue, described damper regulation mechanism includes regulation drive link, first fixture block, second fixture block, slide bar and the fixed support played a supporting role to damper regulation mechanism and slide bar, first fixture block, second fixture block is sheathed on fixed support, slide bar is arranged in the first fixture block, between second fixture block, and first fixture block, the relative medial surface of second fixture block is provided with the chute coordinated with slide bar, regulation drive link passes through fixed support, first fixture block, regulation head is connected with after second fixture block, adjust head and regulation drive link synchronous axial system, regulation head rotates and then oppresses the second fixture block towards a direction makes first, second fixture block clamps slide bar；The present invention embraces slide bar by first, second fixture block, further through the regulation head pressure different from the cooperation application of the second fixture block so that the enclasping force that regulation head rotational positioning applies to slide bar is different, so as to adjust the frictional force of slide bar.
Description
Technical field
The present invention relates to a kind of leisure chaise longue, more particularly to a kind of damper regulation mechanism for leisure chaise longue.
Background technology
When people's outdoor leisure amusement indoors, leisure chaise longue is through commonly used；The back rest meeting of general leisure chaise longue
Tilt backwards, to provide optimal relaxed position.
Many leisure chaise longues are because the man-machine size matching relationship of backrest and seat surface is without fastidious at present, and user is in reclining process
In, backrest particularly Lumbar departs from human body waist, and the two directly forms hanging gap, causes the seat under reclining state to lose
The support to human body waist is lost, is exactly " race waist " that we are commonly called as, human spine, which cannot be supported effectively, causes many sittings
Health problem, rest can not be loosened well；Meanwhile user, during reclining, buttocks is relatively fixed with seat surface, and
Backrest rubs upwards with respect to human body back, causes the discomfort of " clothes is pulled in chopping ", also causes indecency perception.
A kind of ad hoc seat back of the body coordinated type leisure chaise longue of meter, is hinged by backrest and arm-rest frame, meanwhile, backrest is cut with scissors with mounting again
Connect, low after height before mounting, mounting front end is connected with arm-rest frame by sliding bar, can be lifted mounting rear end during backrest reclining
Rise, while the weight of people is applied on inclined mounting, and the gravity of human body is divided into a downward pressure and one backward
Reaction force；Human body is applied to the power on mounting, by component transmission, can feed back on backrest, backrest is provided a branch
Support；The component that the people of different weight is applied on slide bar is different, causes the frictional force between slide bar and mounting and reaction backward
Power is also different；Therefore for the people of different weight during backrest has fallen, the thrust of backrest feedback is also different；Simultaneously because structure
Limitation can not meet the demand of Overweight people, because the frictional force between slide bar and mounting can not be adjusted, the dynamics that backrest has fallen
It can not be matched between slide bar frictional force, so using not enough comfortably, a kind of damper regulation mechanism need to be designed to adjust slide bar
Frictional force, make various body weight crowd can use it is comfortable.
The content of the invention
In order to solve the above-mentioned technical problem, it is an object of the invention to provide a kind of damper regulation mechanism for leisure chaise longue,
The damper regulation mechanism embraces slide bar by first, second fixture block, coordinates application different from the second fixture block further through regulation head
Pressure so that the enclasping force applied to slide bar is different, so as to adjust the frictional force of slide bar, makes dynamics and cunning that backrest has fallen
Reaction force on bar backward reaches relative equilibrium, so that backrest can stop in any angle, and has one just to arrive
The power support back at place, improves comfort；Meanwhile the damper regulation mechanism by slide bar is applied different clamping force with
Frictional force of the leisure chaise longue when having fallen is adjusted, to be adapted to the crowd of different weight.
In order to realize above-mentioned purpose, present invention employs following technical scheme：
For the damper regulation mechanism of leisure chaise longue, described damper regulation mechanism includes regulation drive link, the first fixture block, the
Two fixture blocks, slide bar and the fixed support played a supporting role to damper regulation mechanism and slide bar, the first fixture block, the second fixture block set
On fixed support, slide bar is arranged between the first fixture block, the second fixture block, and the inner side that the first fixture block, the second fixture block are relative
Face is provided with the chute coordinated with slide bar, and regulation drive link is connected with regulation after passing through fixed support, the first fixture block, the second fixture block
Head, regulation head and regulation drive link synchronous axial system, regulation head rotates and then oppresses the second fixture block towards a direction makes first, second folder
Block clamps slide bar, and regulation head rotates in the opposite direction, unclamps first, second fixture block.
Spacing that is, tightness between first, second fixture block chute determine the frictional force size of slide bar, work as friction
When power is sufficiently large, slide bar is locked, slide bar is no longer slided.
Preferably, carrying the locating piece coordinated with regulation head on the lateral surface of the second fixture block, locating piece is with adjusting head phase
To this one side be provided with multiple positioning steps being twist distributed from shallow to deep, regulation head have spiral end face and
Spiral end face is provided with the boss coordinated with positioning step, and regulation head rotation makes boss be caught in corresponding positioning step.Boss
Being caught in different positioning steps when adjusting head rotation causes spacing between first, second fixture block to produce change, and then makes the
First, the second fixture block produces change to the clamping force size of slide bar, and positioning step has positioning action, boss is may remain in accordingly
Position；In addition, the cooperation of boss and positioning step can increase regulation feel so that be formed certainly during two helicoid fittings
Lock.
Preferably, fixed support is to be vertically arranged with slide bar, described fixed support is hollow sleeve pipe, and sleeve pipe divides
For two sections of extra heavy pipe and tubule, the intersection of extra heavy pipe and tubule forms step, and the first fixture block, the second fixture block are set on tubule, and
First fixture block offsets with step.Fixed support is to be vertically arranged with slide bar so that first, second fixture block is in fixed support circumference side
To fixation is kept, regulation head, which can arbitrarily rotate, is caught in different gears；Fixed support is divided into two sections of thickness so that first,
Two fixture blocks are stuck at step, are fixed in fixed support length direction.
Preferably, one end of first, second fixture block is connected by screw, set between the other end of first, second fixture block
There is stage clip.Locating piece is caught in deeper positioning step inwardly the second fixture block of extruding, and the second fixture block in the case where adjusting head turning effort
Slide bar is further extruded, and when adjusting head release i.e. boss is caught in shallower positioning step, then the second fixture block is being pressed
Spring force effect is lower to be resetted.
Preferably, being arranged with bushing on slide bar, described bushing is stuck between the first fixture block, the second fixture block, and is served as a contrast
Cover outer wall and be provided with the breach through whole bushing set along liner sleeve length direction.The setting of bushing can increase and slide bar
Contact surface, bushing are provided with breach and can deformed upon when being squeezed, so as to increase the cladding dynamics to slide bar.
Compared with prior art, design philosophy of the invention and beneficial effect are：
The present invention embraces slide bar by first, second fixture block, coordinates application different from the second fixture block further through regulation head
Pressure, the regulation head face relative with the second fixture block are engaged provided with spiral positioning step with positioning boss so that regulation head
The enclasping force that rotational positioning applies to slide bar is different, so as to adjust the frictional force of slide bar, makes dynamics and cunning that backrest has fallen
Reaction force on bar backward reaches relative equilibrium, so that backrest can stop in any angle, and has one just to arrive
The power support back at place, improves comfort；Meanwhile the damper regulation mechanism by slide bar is applied different clamping force with
Frictional force of the leisure chaise longue when having fallen is adjusted, to be adapted to the crowd of different weight.
Furtherly, mounting is tilting, and the angle for making backrest fall becomes big, makes one the rest that can more loosen；
Human body is applied to the power on mounting, is divided into a downward pressure and a reaction force backward, can be with by component transmission
Feed back on backrest, backrest is provided the support of an appropriate benefit, and the support of people's backrest of different weight feedback is to differ
Sample, while comfort is improved, reach the relative equilibrium of a backrest and mounting a power between the two, make backrest in office
One angle of meaning can be stopped easily；Meanwhile during backrest reclining, the gravity for loading on mounting is transmitted to backrest reply
The ratio of power incrementally increases, and provides rational backrest restoring force all the time in whole process so that the lighter or heavier people of body weight
Easily reclining and reply it can stand up.And other kinds of leisure chaise longue uses locking mechanism or use to reach this effect
Motor drive mechanism, the present invention have just reached equivalent effect by above-mentioned setting, have saved cost, simplified structure.
Further say, damper regulation mechanism of the invention coordinates with mounting slide bar, makes body weight can be met more than 100KG
Needs；The slide bar being obliquely installed is provided with below mounting, the weight of people is applied on slide bar by mounting, and slide bar is by the weight of human body
Power is divided into a downward pressure and a reaction force backward；Downward pressure is applied on damper regulation mechanism, backward
Reaction force conduct to the resilience dynamics of backrest；The component that the people of different weight is applied on damper regulation mechanism is different,
Cause frictional force and the reaction force backward of damper regulation mechanism also different；Damper regulation mechanism elastic while it can also adjust
Save this frictional force；Reaction force backward is then transmitted on backrest, and the people of different weight is during backrest has fallen, backrest
The thrust of feedback is also different；Simultaneously by the cooperation of flexible restoring organ and damper regulation mechanism, make the dynamics that backrest has fallen with
Reaction force on slide bar backward reaches relative equilibrium, so that backrest can stop in any angle, and has one just to arrive
The power support back of benefit, improves comfort；Damper regulation mechanism adjusts frictional force of the leisure chaise longue when having fallen, to fit
Close the crowd of different weight.
Brief description of the drawings
Fig. 1 is schematic diagram of the leisure chaise longue of the present invention in original state in embodiment；
Fig. 2 is schematic diagram of the leisure chaise longue of the present invention in backrest reclining state；
Fig. 3 is dimensional structure diagram of the leisure chaise longue of the present invention in original state；
Fig. 4 is Fig. 3 A portions enlarged drawing；
Fig. 5 is dimensional structure diagram of the leisure chaise longue of the present invention in backrest reclining state；
Fig. 6 is the explosive view of leisure chaise longue of the present invention；
Fig. 7 is the explosive view of flexible restoring organ；
Fig. 8 is the partial sectional view of flexible restoring organ；
Fig. 9 is the fit structure schematic diagram of damper regulation mechanism and slide bar；
Figure 10 is the partial sectional view that damper regulation mechanism is engaged with slide bar；
Figure 11 is the explosive view of damper regulation mechanism and slide bar；
Figure 12 is the explosive view of damper regulation mechanism and another angle of slide bar.
Embodiment
The embodiment of the present invention is made a detailed explanation below in conjunction with the accompanying drawings.
The reference azimuth of each part of the definition present invention first, the present invention by leisure chaise longue in normal use, before leisure chaise longue
Side be front end, and the region where the rear of leisure chaise longue includes backrest be rear end, and people is sitting on leisure chaise longue when leaning on backward, backrest rotation
Mounting is driven to movement in front of leisure chaise longue.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can be straight
Connect connected, can also be indirectly connected by intermediary.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Damper regulation mechanism of the present invention is the important component of the present embodiment leisure chaise longue, one kind as shown in Fig. 1~Fig. 8
Leisure chaise longue, a kind of leisure chaise longue is may also be referred to as, include the arm-rest frame 2 of backrest 1, mounting 4 and the both sides of mounting 4, two arm-rest frames 2
It is connected by chair body support frame 3, the left and right sides of backrest 1 is be hinged with two arm-rest frames 2 respectively, the rear end both sides of mounting 4 difference
Be hinged with the left and right sides of backrest 1, backrest 1 is different with the pin joint position of backrest 1 from the pin joint and mounting 4 of arm-rest frame 2, mounting
4 are in the lower section of backrest 1 and the pin joint of arm-rest frame 2 with the pin joint position of backrest 1, described described mounting 4 relative to
Horizontal plane is set and the high rear end in the front end of mounting 4 is low, and the front end of mounting 4 is slidably connected again while rotation connection with arm-rest frame 2,
Mounting 4 is driven to travel forward and lift the rear end of mounting 4 when backrest 1 rotates backward, in the pin joint position of backrest 1 and arm-rest frame 2
Put or the pin joint opening position of mounting 4 and backrest 1 is provided with flexible restoring organ 6.
Specifically, the L-shaped connecting plate 10 of the left and right sides of backrest 1, the rear end both sides of mounting 4 are symmetricly set in addition to
Be arranged with two supports 8, an arm 16 and the backrest 1 of L-shaped connecting plate 10 are fixedly linked, another arm 17 of L-shaped connecting plate 10 with
Support 8 is be hinged, and intersection 18 and the rear end of arm-rest frame 2 of the two-arm of L-shaped connecting plate 10 are hinged.
As shown in Fig. 6,7,8, described flexible restoring organ 6 is arranged on the pin joint opening position of mounting 4 and backrest 1,
Just it is provided at another arm 17 and the articulated position of support 8 of L-shaped connecting plate 10, as shown in Figure 7, Figure 8, flexible restoring organ 6
Including wind spring 12, it is arranged at another arm 17 and the articulated position of support 8 of L-shaped connecting plate 10 and as the steady pin of rotating fulcrum
19 and the projection 20 that is connected with backrest 1, specifically, projection 20 is fixedly installed on another arm 17 of L-shaped connecting plate 10；Volume
One end of spring 12 is connected with steady pin 19, and the other end of wind spring 12 abuts with projection 20, drives projection 20 to promote when backrest 1 rotates
Wind spring 12 deforms upon and then produces elastic force；Further say, slot 21 is provided with steady pin 19, and one end of wind spring 12 is inserted in
In slot, the other end of wind spring 12 forms crotch 22, and described crotch 22 is hooked on projection 20；The end of steady pin 19 passes through spiral shell
13 and R of mother pins 14 lock；To avoid rubbing between metal, a plastic spacer 9 is respectively provided with the both sides of wind spring 12, is provided with support 8
Limit the rotational angle of backrest 1 or the spacing gain 23 of the movement travel of mounting 4, projection 20 are plugged in spacing gain 23 simultaneously.
As shown in Fig. 2,3,5, a slide bar for being inclined relative to horizontal setting 7 is respectively provided with the down either side of mounting 4, is helped
The damper regulation mechanism 5 for the force of sliding friction of slide bar 7 to be supported and adjusted to slide bar 7 is connected with hand cradle 2.Before slide bar 7
End is fixedly linked with mounting 4, is fixedly linked after the rear end bending of slide bar 7 with mounting 4.
As shown in figs. 9 to 12, described damper regulation mechanism 5 includes regulation drive link 24, the first fixture block 26, the second fixture block
27 and the fixed support 28 played a supporting role to damper regulation mechanism 5 and slide bar 7, one end of regulation drive link 24 is with adjusting
Handle 25 is saved, fixed support 28 is connected with arm-rest frame 2, and the first fixture block 26, the second fixture block 27 are sheathed on fixed support 28, slide bar
7 are arranged between the first fixture block 26, the second fixture block 27, and the relative medial surface of the first fixture block 26, the second fixture block 27 be provided with
The chute 29 that slide bar 7 coordinates, regulation drive link 24 other end connect after passing through fixed support 28, the first fixture block 26, the second fixture block 27
Regulation first 30, regulation first 30 and the regulation synchronous axial system of drive link 24 are connected to, the regulation other end of drive link 24 is flat, and adjusts first 30
The mounting groove 31 to match with regulation drive link 24 other end shape, size is correspondingly provided with, the regulation other end of drive link 24 is inserted in
In mounting groove 31 and it is screwed, regulation first 30 rotates and then oppresses the second fixture block 27 towards a direction makes first, second folder
Block 26,27 clamps slide bar 7, and regulation first 30 rotates in the opposite direction, unclamps first, second fixture block 26,27.
Specifically, for fixed support 28 with slide bar 7 to be vertically arranged, described fixed support 28 is hollow sleeve pipe, and
Sleeve pipe is divided into 33 two sections of extra heavy pipe 32 and tubule, the intersection formation step 34 of extra heavy pipe 32 and tubule 33, the first fixture block 26, second folder
Block 27 is set on tubule 33, and the first fixture block 26 offsets with step 34.
Further say, carried on the lateral surface of the second fixture block 27 with adjusting first 30 locating pieces 35 coordinated, locating piece 35
With adjusting first 30 this relative one side provided with the multiple positioning steps 36 being twist distributed from shallow to deep, first 30 tool of regulation
There is spiral end face 37 and the boss 38 coordinated with positioning step 36 is provided with spiral end face 37, first 30 rotation of regulation makes convex
Platform 38 is caught in corresponding positioning step 36.
One end of first, second fixture block 26,27 is connected by screw, is set between the other end of first, second fixture block 26,27
There is stage clip 39.
Bushing 40 is arranged with slide bar 7, described bushing 40 is stuck between the first fixture block 26, the second fixture block 27, and is served as a contrast
Cover 40 outer walls and be provided with the breach 41 through whole bushing 40 set along the length direction of bushing 40；When bushing 40 is by the second folder
When block 27 extrudes, it may occur that shrink, increase the cladding dynamics to slide bar 7.
Backrest 1 backward reclining when, mounting 4 and slide bar 7 are moved forward, while the rear end of mounting 4 is lifted up so that mounting 4
And the front end of slide bar 7 produces the rotation of low-angle, drive first, second fixture block 26,27 and regulation is first 30, regulation drive link 24 is carried out
Synchronous axial system, therefore place's rotational angle is smaller, therefore positioning of the positioning step 36 to boss 38 is not influenceed.
Above content described in this specification is only illustration made for the present invention.Technology belonging to the present invention
The technical staff in field can make various modifications or supplement to described specific embodiment or using similar mode
Substitute, content without departing from description of the invention or surmount scope defined in the claims, this all should be belonged to
The protection domain of invention.
Claims (5)
1. for the damper regulation mechanism of leisure chaise longue, it is characterized in that：Described damper regulation mechanism includes regulation drive link, first
Fixture block, the second fixture block, slide bar and the fixed support played a supporting role to damper regulation mechanism and slide bar, the first fixture block,
Two fixture blocks are sheathed on fixed support, and slide bar is arranged between the first fixture block, the second fixture block, and the first fixture block, the second fixture block phase
To medial surface be provided with the chute coordinated with slide bar, regulation drive link connects through fixed support, the first fixture block, after the second fixture block
It is connected to regulation head, regulation head and regulation drive link synchronous axial system, regulation head rotates and then oppresses the second fixture block towards a direction makes the
First, the second fixture block clamps slide bar, and regulation head rotates in the opposite direction, unclamps first, second fixture block.
2. the damper regulation mechanism according to claim 1 for leisure chaise longue, it is characterised in that：The lateral surface of second fixture block
Upper to carry the locating piece coordinated with regulation head, locating piece this one side relative with regulation head is provided with from shallow to deep twist
Multiple positioning steps of distribution, regulation head have spiral end face and are provided with spiral end face convex with positioning step cooperation
Platform, regulation head rotation make boss be caught in corresponding positioning step.
3. the damper regulation mechanism according to claim 1 for leisure chaise longue, it is characterised in that：Fixed support is with slide bar
It is vertically arranged, described fixed support is hollow sleeve pipe, and sleeve pipe is divided into the boundary of two sections of extra heavy pipe and tubule, extra heavy pipe and tubule
Place forms step, and the first fixture block, the second fixture block are set on tubule, and the first fixture block offsets with step.
4. the damper regulation mechanism according to claim 1 for leisure chaise longue, it is characterised in that：First, second fixture block
One end is connected by screw, and stage clip is provided between the other end of first, second fixture block.
5. the damper regulation mechanism according to claim 1 for leisure chaise longue, it is characterised in that：Lining is arranged with slide bar
Set, described bushing are stuck between the first fixture block, the second fixture block, and liner outer wall is provided with along what liner sleeve length direction was set and passed through
Wear the breach of whole bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364765.2A CN107397364B (en) | 2016-05-20 | 2016-05-20 | Damping adjusting mechanism for leisure chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364765.2A CN107397364B (en) | 2016-05-20 | 2016-05-20 | Damping adjusting mechanism for leisure chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107397364A true CN107397364A (en) | 2017-11-28 |
| CN107397364B CN107397364B (en) | 2023-06-02 |
Family
ID=60389645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610364765.2A Active CN107397364B (en) | 2016-05-20 | 2016-05-20 | Damping adjusting mechanism for leisure chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107397364B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0680713A1 (en) * | 1994-04-21 | 1995-11-08 | Zitmeubelen Jori, N.V. | Mechanism for a relaxation chair |
| US20030075394A1 (en) * | 2001-10-24 | 2003-04-24 | Shields Roy E. | Positionable linear friction lock assembly |
| CN1775144A (en) * | 2005-12-09 | 2006-05-24 | 黄星浩 | Chair back regulating device |
| CN101912205A (en) * | 2010-07-30 | 2010-12-15 | 林长贞 | Leisure rocking chair |
| CN104223821A (en) * | 2013-09-24 | 2014-12-24 | 浙江永艺家具股份有限公司 | Base plate of swivel chair |
| CN204561492U (en) * | 2015-04-27 | 2015-08-19 | 李占巨 | A kind of chair that can meet different human body and sitting posture needs |
| CN205831500U (en) * | 2016-05-20 | 2016-12-28 | 安吉上工永艺五金制造有限公司 | Damper regulation mechanism for leisure chaise longue |
-
2016
- 2016-05-20 CN CN201610364765.2A patent/CN107397364B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0680713A1 (en) * | 1994-04-21 | 1995-11-08 | Zitmeubelen Jori, N.V. | Mechanism for a relaxation chair |
| US20030075394A1 (en) * | 2001-10-24 | 2003-04-24 | Shields Roy E. | Positionable linear friction lock assembly |
| CN1775144A (en) * | 2005-12-09 | 2006-05-24 | 黄星浩 | Chair back regulating device |
| CN101912205A (en) * | 2010-07-30 | 2010-12-15 | 林长贞 | Leisure rocking chair |
| CN104223821A (en) * | 2013-09-24 | 2014-12-24 | 浙江永艺家具股份有限公司 | Base plate of swivel chair |
| CN204561492U (en) * | 2015-04-27 | 2015-08-19 | 李占巨 | A kind of chair that can meet different human body and sitting posture needs |
| CN205831500U (en) * | 2016-05-20 | 2016-12-28 | 安吉上工永艺五金制造有限公司 | Damper regulation mechanism for leisure chaise longue |
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| Publication number | Publication date |
|---|---|
| CN107397364B (en) | 2023-06-02 |
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