CN109984504A - A kind of collapsible leg rest mechanism and seat - Google Patents
A kind of collapsible leg rest mechanism and seat Download PDFInfo
- Publication number
- CN109984504A CN109984504A CN201811101499.XA CN201811101499A CN109984504A CN 109984504 A CN109984504 A CN 109984504A CN 201811101499 A CN201811101499 A CN 201811101499A CN 109984504 A CN109984504 A CN 109984504A
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- CN
- China
- Prior art keywords
- leg rest
- drive
- drive rod
- frame
- sliding rail
- Prior art date
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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
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
- A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
Abstract
The present invention relates to a kind of collapsible leg rest mechanism and seats, including base frame unit, that is, include the slide track component for having the seat frame of seat frame and being mounted in seat frame；Leg rest frame is pivotally connected to the slide track component and can pivot between folding position and expanded position relative to the slide track component around the first pivot axis；Operating unit, including drive shaft, drive member, first connecting rod and bar-link drive, rotation of the first connecting rod in response to the drive shaft, and drive bar-link drive to drive the slide track component to be moved to gathering to another position in expanded position from the position collapsed into expanded position, and leg rest frame is driven to be moved to another position folded and unfolded in position from the position folded and unfolded in position.Collapsible leg rest mechanism of the invention folds, expansion is more laborsaving, and maximum angle folding can be carried out to leg rest frame, and after being unfolded leg rest can extend it is longer.
Description
Technical field
The invention belongs to technical field of furniture more particularly to a kind of collapsible leg rest mechanism and seats.
Background technique
Chair be for it is artificial make, study when the office furniture that is seated, office worker, which is seated for a long time after office, can feel tired
Labor, in order to alleviate work fatigue, office worker be seated office duration it is longer after require relax.Traditional office chair
All be to be made of backrest, seat cushion and sustainable chair leg, backrest, seat cushion position be all it is relatively-stationary, can not lie for people
Lower rest.Office worker usually requires in addition to purchase the furniture for being suitble to lie down and is just able to achieve the office that is seated, recumbency rest, but this
Sample needs to occupy office space space, and the office for being not suitable for narrow space uses.Based on the above issues, some band leg rest rests
Chair gradually appear, leg rest portion rolls into one with chair by various modes, than if any one kind with leg support frame or putting
The chair of leg frame, the leg support frame can be overturn between extended position and folding position；However, the leg branch at folding position
Frame is basically perpendicular to seat frame, that is, inwardly collapse it is inadequate, so when leg support frame is in folding position, the leg of user
Portion can touch leg support frame, this may cause discomfort；In addition, leg support frame hampers the downside of chair when at folding position
Cleaning；It is more laborious when besides leg support frame is unfolded or folds.
In view of the above technical problems, applicant devises a kind of collapsible leg support mechanism and seat, and has applied for that invention is special
Benefit, Authorization Notice No. CN27477253U.This collapsible leg support mechanism and seat include seat frame；Leg rest frame,
It is pivotally connected to seat frame and can be pivoted between folding position and expanded position relative to seat frame；In folding position
It is below seat frame and at an acute angle with seat frame to set the setting of leg rest frame；In expanded position leg rest frame and seat frame
It is substantially coplanar.However in practical applications, it has been found that this collapsible leg support mechanism, the footrest rack gap of chair is big, shakes
It is dynamic serious, and the length of footrest rack expansion elongation and the height of lifting are all inadequate, cause foot prop inadequate in comfort level above.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide it is a kind of fold, expansion it is more laborsaving, and can
To carry out maximum angle folding to leg rest frame, and leg rest can extend longer collapsible leg rest mechanism after expansion, the present invention
Purpose also reside in a kind of seat using the collapsible leg rest mechanism be provided.
In order to achieve the above purpose, present invention employs technical solutions below:
A kind of collapsible leg rest mechanism, including
Base frame unit, including the seat frame with seat frame and the slide track component being mounted in seat frame, institute
Stating slide track component is three section rails；
Leg rest frame is pivotally connected to the slide track component and can surround the first pivotal axis relative to the slide track component
Line pivots between folding position and expanded position；In the folding position, the leg rest frame is arranged in the seat frame
Lower section and at an acute angle with the seat frame；In the expanded position, the leg rest frame is substantially located with the seat frame
On the same face；
Operating unit, the drive shaft including first pivot axis rear is arranged in are parallel to first pivot axis
And it is rotatably mounted in the seat frame, and:
Actuator, for driving drive shaft to rotate around center axis；
First connecting rod and bar-link drive, the first connecting rod and drive connecting rod to drive in response to the rotation of the drive shaft
Mechanism with drive the slide track component from collapse a position into expanded position be moved to collapse it is another into expanded position
One position, and drive leg rest frame be moved to from the position folded and unfolded in position fold and unfold it is another in position
One position.
Preferably, the actuator is operating stick, the operating stick is connected to one end of the drive shaft.
Preferably, the first connecting rod is L-shaped, one end of first connecting rod is fixed on the driving shaft and with the rotation of drive shaft
Then rotation.
Preferably, two slide track components are symmetricly set on the two sides of seat frame, sliding rail there are two the slide track components
Component includes external slide rail, middle sliding rail and interior sliding rail, and the external slide rail is symmetrically mounted on the two sides of seat frame, middle sliding rail installation
It can slide back and forth in external slide rail and along external slide rail, the interior sliding rail is mounted in middle sliding rail and can slide back and forth along middle sliding rail.
Preferably, it is fixed with first crossbar before the front end of described two symmetrically arranged middle sliding rails, it is described two right
Claim to be fixed with second crossbar between the front end of the interior sliding rail of setting.
Preferably, the bar-link drive includes leg rest telescoping drive mechanism and leg rest turnover driving mechanism, it is described
Leg rest telescoping drive mechanism be used to driving the slide track component from collapse a position into expanded position be moved to gathering to
Another position in expanded position, the leg rest turnover driving mechanism is for driving the leg rest frame from folding and unfolding position
The position set is moved to another position folded and unfolded in position.
Preferably, the leg rest telescoping drive mechanism include the first drive rod, the second drive rod, third drive rod and
One end of 4th drive rod, first drive rod is flexibly connected with the second drive rod, one end of second drive rod and seat
The side of portion's frame is rotatablely connected, and one end of the other end and third drive rod of the second drive rod is hinged, third drive rod it is another
One end is hinged with second crossbar, and one end of the 4th drive rod and the second drive rod are hinged, the other end of the 4th drive rod with
First crossbar is hinged.
Preferably, the both ends of first drive rod are provided with universal joint, one end of the first drive rod and first connecting rod
The other end be connected by universal joint, the other end of the first drive rod is connect by universal joint with the second drive rod.
Preferably, the tie point of first drive rod and the second drive rod is between the both ends of the second drive rod,
Connection of the hinge joint of four drive rods and the second drive rod in the second drive rod other end and the first drive rod and the second drive rod
Between point.
Preferably, the 4th drive rod includes the articulated section at both ends and the interconnecting piece of centre, the hinge at the both ends
Socket part is not in the same plane.
Preferably, the leg rest frame includes the footrest rack being symmetrical arranged in interior sliding rail two sides, before two footrest racks
End is provided with toe board.
Preferably, the leg rest turnover driving mechanism include be symmetricly set on middle sliding rail front end two second connecting rods and
It is symmetrical arranged two the 5th drive rods in interior sliding rail front end；One end of the second connecting rod is fixed on middle sliding rail front end, and second
The other end of connecting rod and the rear end of ipsilateral footrest rack are hinged；One end of 5th drive rod and the front end of ipsilateral interior sliding rail are cut with scissors
It connects, the other end and ipsilateral footrest rack of the 5th drive rod are hinged；Second connecting rod, the 5th drive rod, interior sliding rail and footrest rack it
Between constitute four-bar mechanism.
Preferably, the two sides of the seat frame are also equipped with positive stop spring plate, the positive stop spring plate is located at external slide rail
Rear end.
Preferably, the positive stop spring plate includes fixed part and sticking department, the positive stop spring plate by fixed part install to
In seat frame, the sticking department is equipped with lead-in chamfered in face of the side of slide track component, and lock tab bubble is provided on sticking department,
Limitation locking hole is offered on the interior sliding rail, when leg rest frame collapses, interior sliding rail is slided backward, the limiting lock on interior sliding rail
Determine hole and is moved to completion locking on the lock tab bubble of positive stop spring plate.
Preferably, the other end of the drive shaft is hinged with spring guide holder, the seat frame is additionally provided with spring
The guiding axis of fixing seat, the spring guide holder is inserted in spring fixed seat, between the spring fixed seat and spring guide holder
It is also equipped with pressure spring.
A kind of seat, including back frame and collapsible leg rest mechanism described above, the back frame attachment base
Portion's frame.
Compared with prior art, the beneficial effects of the present invention are:
1. the present invention folds, expansion is more laborsaving, and can carry out maximum angle folding to leg rest frame, put when folding
Leg frame is downwardly turned over around pivoting point greater than 90 degree and finally at an acute angle or even close to parallel with seat frame, in this way when not making
Leg rest is in use, human leg will not touch leg rest frame, and shape seems more beautiful, and the ground below portions is clear
It is clean not will receive any obstruction.
2. slide track component of the present invention is more able to satisfy people so that leg rest frame length of run is longer using three section rail mechanisms
Use need.
3. the first drive rod both ends of the invention use universal joint, the side of power in drive rod loading process is efficiently solved
To uncertain problem, it is as a result simply, easy to operate.
4. in foot telescoping drive mechanism of the invention, having angle between the first drive rod and the second drive rod, and first drives
The both ends of lever and these three points of one end of the second drive rod constitute triangle, and not due to the length of the first drive rod
Become, and during leg rest overturning driving machine driving, the hinge of one end of the second drive rod to the first drive rod and the second drive rod
The distance between contact does not change, and variation is only between one end of the second drive rod and one end of the first drive rod
Distance, this two edge lengths of triangle variation is constant, and control third edge lengths change to change triangular shaped shift theory,
To drive the expansion and gathering of slide track component, on the other hand one side stable structure has been raised the height of leg rest frame again, has been made
It is more attractive, hale and hearty to obtain leg rest.
5. passing through the structure setting of positive stop spring plate and interior sliding rail, structure is simple, and locking effect is good, can effectively avoid slide rail group
Part failure occurs.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of collapsible leg rest mechanism of the invention in the deployed state.
Fig. 2 is the explosive view of collapsible leg rest mechanism of the invention.
Fig. 3 is the structural schematic diagram at collapsible leg rest mechanism of the invention another visual angle in the deployed state.
Fig. 4 is the structural schematic diagram of collapsible leg rest mechanism of the invention during expansion.
Fig. 5 is the structural schematic diagram of collapsible leg rest mechanism of the invention under rounding state.
Fig. 6 is the structural schematic diagram of drive shaft Yu leg rest telescoping drive mechanism.
Fig. 7 is the partial enlarged view in Fig. 1 at A.
Fig. 8 is the partial enlarged view in Fig. 4 at B.
Fig. 9 is the cooperation schematic diagram of drive shaft, first connecting rod, the first drive rod and spring guide holder.
Figure 10 is the side view that leg rest frame cooperates between leg rest frame and slide track component in rounding state.
Figure 11 is cooperation schematic diagram of the leg rest frame in rounding state between leg rest frame and slide track component.
Figure 12 is the anti-excessively dead schematic diagram of leg rest frame first crossbar in rounding state.
It is identified in figure as follows:
It is seat frame 1, slide track component 2, leg rest frame 3, the first pivot axis 4, drive shaft 5, actuator 6, first connecting rod 7, outer
Sliding rail 8, middle sliding rail 9, interior sliding rail 10, first crossbar 11, second crossbar 12, leg rest telescoping drive mechanism 13, leg rest overturning driving
Mechanism 14, the first drive rod 15, the second drive rod 16, third drive rod 17, the 4th drive rod 18, universal joint 19, articulated section 20,
Interconnecting piece 21, footrest rack 22, toe board 23, second connecting rod 24, the 5th drive rod 25, positive stop spring plate 26, spring guide holder 27, bullet
The fixed metal plate 29 of spring fixing seat 28, guide rail, internal rail metal plate 31, munnion 32, C-shaped axle bed 33, C-shaped baffle 34, adds middle rail metal plate 30
Strong bar 35, fixed part 36, sticking department 37, lead-in chamfered 38, lock tab steep 39, limitation locking hole 40, limited post 41.
Specific embodiment
A specific embodiment of the invention is made a detailed explanation with reference to the accompanying drawing.
The reference azimuth of each component of the definition present invention first, the present invention is by chassis and seat in normal mounting in use, seat
The front of chair is front end, and the rear of seat includes that the position where backrest is rear end, and the two sides of seat are side.
Embodiment:
A kind of collapsible leg rest mechanism, including
Base frame unit, including the seat frame with seat frame 1 and the slide track component being mounted in seat frame 12,
Seat frame 1 has substantially quadrilateral structure, and slide track component 2 is three section rail assemblies；
Leg rest frame 3 is pivotally connected to the slide track component 2 and can surround the first pivot relative to the slide track component 2
Shaft axis 4 pivots between folding position and expanded position；As shown in figure 5, the leg rest frame 3 is set in the folding position
It sets below the seat frame 1 and at an acute angle with the seat frame 1；As shown in Figure 1, Figure 3, in the expanded position,
The leg rest frame 3 is substantially on the same face with the seat frame 1；
Operating unit, the drive shaft 5 including 4 rear of the first pivot axis is arranged in, is parallel to first pivotal axis
It line 4 and is rotatably mounted in the seat frame 1, and:
Actuator 6, for driving drive shaft 5 to rotate around center axis, specifically, actuator 6 is operating stick, operating stick
It is connected to one end of the drive shaft 5, and operating stick is approximately perpendicular to the setting of drive shaft 5；
First connecting rod 7 and bar-link drive, the first connecting rod 7 and drive connecting rod to drive in response to the rotation of the drive shaft 5
Motivation structure is to drive the slide track component 2 to be moved to gathering into expanded position from the position collapsed into expanded position
Another position, and drive leg rest frame 3 to be moved to from the position folded and unfolded in position and fold and unfold in position
Another position.Specifically, first connecting rod 7 is L-shaped, and one end of first connecting rod 7 is fixed in drive shaft 5 and with drive shaft
5 rotation and rotate, fixed point is substantially at the center of drive shaft 5.
It is fixed with the fixed metal plate 29 of guide rail in the two sides of seat frame 1, slide track component 2 there are two groups, and two groups of slide track components 2 are right
Claim on the fixed metal plate 29 of the guide rail for being mounted on two sides.Specifically, slide track component 2 includes external slide rail 8, middle sliding rail 9 and interior cunning
Rail 10, wherein external slide rail 8 is symmetrically mounted on the fixed metal plate 29 of guide rail of two sides, and middle sliding rail 9 is mounted in external slide rail 8 and can edge
External slide rail 8 slides back and forth, and interior sliding rail 10 is mounted in middle sliding rail 9 and can slide back and forth along middle sliding rail 9.
As shown in Fig. 1, Fig. 3~Fig. 6, the rail metal plate 30 in being fixedly arranged at the front end with of middle sliding rail 9, between two middle rail metal plates 30
It is fixed with first crossbar 11；It is fixedly arranged at the front end with internal rail metal plate 31 in interior sliding rail 10, is fixed between two internal rail metal plates 31
Two cross bars 12.
As shown in Fig. 1~Fig. 6, bar-link drive includes leg rest telescoping drive mechanism 13 and leg rest turnover driving mechanism
14.Wherein the leg rest telescoping drive mechanism 13 is for driving the slide track component 2 one from gathering into expanded position
Position is moved to gathering to another position in expanded position, and the leg rest turnover driving mechanism 14 is described for driving
Leg rest frame 3 is moved to another position folded and unfolded in position from the position folded and unfolded in position.
Specifically, leg rest telescoping drive mechanism include the first drive rod 15, the second drive rod 16, third drive rod 17 with
And the 4th drive rod 18.The both ends for stating the first drive rod 15 are provided with universal joint 19, and one end of the first drive rod 15 connects with first
The other end of bar 7 is connected by universal joint 19, and the other end of the first drive rod 15 is connected by universal joint 19 and the second drive rod 16
It connects.One end of second drive rod 16 and the side of seat frame 1 are rotatablely connected, and the other end and third of the second drive rod 16 drive
One end of bar 17 is hinged, and the other end of third drive rod 17 and second crossbar 12 are hinged, and hinge joint is close to second crossbar
Middle part.One end of 4th drive rod 18 and the second drive rod 16 are hinged, the other end of the 4th drive rod 18 and the first cross
Bar 11 is hinged, and hinge joint is close to the middle part of first crossbar 11.Further, the first drive rod 15 and the second drive rod 16
Tie point is between the both ends of the second drive rod 16, and the hinge joint of the 4th drive rod 18 and the second drive rod 16 is in the second drive rod
Between 16 other ends and the first drive rod 15 and the tie point of the second drive rod 16.As optimization, the 4th drive rod 18 includes two
The interconnecting piece 21 of the articulated section 20 at end and centre, the articulated section 20 at the both ends is not in the same plane.This design avoids
It contacts between second drive rod 16 and first crossbar 11, has avoided between the two abrasion, while also reducing the 4th driving
The contact area of bar 18 and the second drive rod 16 reduces abrasion, increases service life.It was collapsed in leg rest telescoping drive mechanism
Cheng Zhong, if first crossbar 11 is moved rearwardly into after the second drive rod 16 and the hinge joint of seat frame 1, the second drive rod 16
The driving capability to leg rest telescoping drive mechanism will be lost, this position namely dead point.Occurs dead point situation in order to prevent,
Limited post 41 is provided on two drive rods 16, when first crossbar 11 is moved rearwardly into certain position, first crossbar 11 will be in limit
Column 41, thus avoid crossing dead point, as shown in Figure 10,
Leg rest frame 3 includes the footrest rack 22 being symmetrical arranged in interior 10 two sides of sliding rail, is provided in the front end of two footrest racks 22
Toe board 23.
Leg rest turnover driving mechanism 14 includes being symmetricly set on two second connecting rods 24 of middle 9 front end of sliding rail and being symmetrical arranged
Two the 5th drive rods 25 in interior 10 front end of sliding rail.One end of second connecting rod 24 is fixed on middle rail metal plate 30, is particularly located at
The lateral surface of middle 9 front end of sliding rail, the other end of second connecting rod 24 and the rear end of ipsilateral footrest rack 22 are hinged.5th drive rod 25
One end and internal rail metal plate 31 it is hinged, specific hinge joint is located at the front end of interior sliding rail 10, the other end of the 5th drive rod 25 with together
The footrest rack 22 of side is hinged, and hinge joint is between the both ends of footrest rack 22.At this point, second connecting rod 24, the 5th drive rod 25, interior
Four-bar mechanism is constituted between sliding rail 10 and footrest rack 22, as shown in Figure 10,11.
As shown in figure 8, prevent middle sliding rail 9 and interior sliding rail 10 from skidding off external slide rail to limit to slide track component 2,
The two sides of seat frame 1 are also equipped with positive stop spring plate 26, and the positive stop spring plate 26 is located at the rear end of external slide rail 8.The limit
Elastic slice 26 includes fixed part 36 and sticking department 37, and the positive stop spring plate 26 is installed by fixed part 36 to seat frame 1, described
Sticking department 37 is equipped with lead-in chamfered 38 in face of the side of slide track component 2, and lock tab bubble 39 is provided on sticking department 37, described interior
Limitation locking hole 40 is offered on sliding rail 10, leg rest frame 3 collapse when, interior sliding rail 10 slides backward, when interior sliding rail 10 after
When end touches lead-in chamfered 38, interior sliding rail 10 inwardly squeezes lead-in chamfered 38, when interior sliding rail 10 slides backwards on limiting lock
When determining hole 40 and being moved to the lock tab bubble 39 of positive stop spring plate 26, the homing under the effect of elasticity of sticking department 37, lock tab bubble 39
Into in limitation locking hole 40, to complete to lock.
As shown in fig. 1~fig. 5, be further fixed on munnion in the lower end of seat frame 1, the munnion 32 and seat frame 1 it
Between be connected with reinforcing rod 35, for reinforcing the intensity of munnion 32.It is fixed with C-shaped axle bed 33 in the two sides of the lower beam of munnion 32,
Drive shaft 5 is connected at the c-shaped opening of C-shaped axle bed, and C-shaped axle bed 33 is close in drive shaft 5 and is provided with C-shaped baffle 34, C-shaped baffle
34 opening and c-shaped opening it is contrary, C-shaped baffle 34 is installed and is fixed by screw and formed afterwards with C-shaped axle bed 33
Whole axis hole, for fixing drive shaft 5.
As shown in Figure 1, the other end of drive shaft 5 is hinged with spring guide holder 27, it is solid to be additionally provided with spring in seat frame 1
Reservation 28, the guiding axis of spring guide holder 27 are inserted in spring fixed seat 28, between spring fixed seat 28 and spring guide holder 27
It is also equipped on pressure spring figure and does not identify.This design is in order to the power-assisted when folding and unfolding.
The present embodiment separately provides a kind of seat, including not identifying on back frame figure and collapsible leg rest described above
Mechanism, the back frame connect seat frame 1.It is placed in seat frame 1 and leg rest frame 3 and fixes the Soft Rolls such as cushion
Material forms seat, and people is sitting in seat frame, can hand operating stick, driving drive shaft rotation makes to drive first connecting rod movement,
And then the movement of the first drive rod is driven, a drive rod drives the movement of the second drive rod, third drive rod and the 4th drive rod fortune again
It is dynamic, and then stretch leg rest telescoping drive mechanism 13 forward, meanwhile, third drive rod 17 drives second crossbar movement, and then band
Dynamic 5th drive rod 25 movement finally makes second connecting rod 24, the 5th drive rod 25, structure between interior sliding rail 10 and footrest rack 22
It is operated at four-bar mechanism, leg rest frame 3 is finally made to overturn opening forward.When needing to fold leg rest frame 3, opposite direction is only needed
Rotate operating stick.
Above content is only illustrations made for the present invention described in this specification.Technology belonging to the present invention
The technical staff in field can make various modifications or additions to the described embodiments or by a similar method
Substitution, content without departing from description of the invention or beyond the scope defined by this claim should belong to this
The protection scope of invention.
Claims (17)
1. a kind of collapsible leg rest mechanism, it is characterised in that: including
Base frame unit, including the seat frame with seat frame (1) and the slide rail group being mounted on seat frame (1)
Part (2), the slide track component (2) are three section rails；
Leg rest frame (3) is pivotally connected to the slide track component (2) and can surround relative to the slide track component (2)
First pivot axis (4) pivots between folding position and expanded position；In the folding position, the leg rest frame (3) is set
It sets below the seat frame (1) and at an acute angle with the seat frame (1)；In the expanded position, the leg rest frame
Frame (3) and the seat frame (1) are substantially on the same face；
Operating unit is parallel to first pivot including the drive shaft (5) at the first pivot axis (4) rear is arranged
It shaft axis (4) and is rotatably mounted on the seat frame (1), and:
Actuator (6), for driving drive shaft (5) to rotate around center axis；
First connecting rod (7) and bar-link drive, the first connecting rod (7) and drive in response to the rotation of the drive shaft (5)
Bar-link drive is to drive the slide track component (2) to be moved to gathering to expansion from the position collapsed into expanded position
Another position in position, and drive leg rest frame (3) from the position folded and unfolded in position be moved to folding and
Another position in expanded position.
2. according to a kind of collapsible leg rest mechanism described in claim 1, it is characterised in that: the actuator (6) is operating stick,
The operating stick is connected to one end of the drive shaft (5).
3. according to a kind of collapsible leg rest mechanism described in claim 1, it is characterised in that: the first connecting rod (7) is L-shaped, the
One end of one connecting rod (7) is fixed on drive shaft (5) and rotates with the rotation of drive shaft (5).
4. according to a kind of collapsible leg rest mechanism as claimed in claim 3, it is characterised in that: there are two the slide track components (2), and two
A slide track component (2) is symmetricly set on the two sides of seat frame (1), slide track component (2) include external slide rail (8), middle sliding rail (9) with
And interior sliding rail (10), the external slide rail (8) are symmetrically mounted on the two sides of seat frame (1), middle sliding rail (9) is mounted on external slide rail
(8) it can slide back and forth in and along external slide rail (8), the interior sliding rail (10) is mounted in middle sliding rail (9) and can be before middle sliding rail (9)
After slide.
5. according to a kind of collapsible leg rest mechanism as claimed in claim 4, it is characterised in that: described two symmetrically arranged middle sliding rails
(9) it is fixed with first crossbar (11) before front end, is fixed between the front end of described two symmetrically arranged interior sliding rails (10)
Second crossbar (12).
6. according to a kind of collapsible leg rest mechanism described in claim 5, it is characterised in that: the bar-link drive includes leg rest
Telescoping drive mechanism (13) and leg rest turnover driving mechanism (14), the leg rest telescoping drive mechanism (13) is for driving the cunning
Rail assembly (2) is moved to from the position collapsed into expanded position to be collapsed to another position in expanded position, described
Leg rest turnover driving mechanism (14) is for driving the leg rest frame (3) to be moved to from the position folded and unfolded in position
Fold and unfold another position in position.
7. according to a kind of collapsible leg rest mechanism as claimed in claim 6, it is characterised in that: the leg rest telescoping drive mechanism includes
First drive rod (15), the second drive rod (16), third drive rod (17) and the 4th drive rod (18), first drive rod
(15) one end is flexibly connected with the second drive rod (16), and the one of one end of second drive rod (16) and seat frame (1)
Side rotation connection, one end of the other end and third drive rod (17) of the second drive rod (16) is hinged, third drive rod (17)
The other end and second crossbar (12) hingedly, one end and the second drive rod (16) of the 4th drive rod (18) hingedly, 4 wheel driven
The other end of lever (18) and first crossbar (11) are hinged.
8. according to a kind of collapsible leg rest mechanism as claimed in claim 7, it is characterised in that: be arranged on second drive rod (16)
There are limited post (41).
9. according to a kind of collapsible leg rest mechanism as claimed in claim 7, it is characterised in that: the both ends of first drive rod (15)
It being provided with universal joint (19), one end of the first drive rod (15) is connected with the other end of first connecting rod (7) by universal joint (19),
The other end of first drive rod (15) is connect by universal joint (19) with the second drive rod (16).
10. according to a kind of collapsible leg rest mechanism as claimed in claim 7, it is characterised in that: first drive rod (15) and the
The tie point of two drive rods (16) is between the both ends of the second drive rod (16), the 4th drive rod (18) and the second drive rod (16)
Hinge joint between the second drive rod (16) other end and the first drive rod (15) and the tie point of the second drive rod (16).
11. according to a kind of collapsible leg rest mechanism described in any one of claim 10, it is characterised in that: the 4th drive rod (18) includes
The interconnecting piece (21) of the articulated section (20) at both ends and centre, the articulated section (20) at the both ends is not in the same plane.
12. according to a kind of collapsible leg rest mechanism as claimed in claim 6, it is characterised in that: the leg rest frame (3) includes symmetrical
Footrest rack (22) in interior sliding rail (10) two sides is set, and the front end of two footrest racks (22) is provided with toe board (23).
13. according to a kind of collapsible leg rest mechanism described in claim 12, it is characterised in that: the leg rest turnover driving mechanism
It (14) include being symmetricly set on two second connecting rods (24) of middle sliding rail (9) front end and being symmetrical arranged in interior sliding rail (10) front end
Two the 5th drive rods (25)；One end of the second connecting rod (24) is fixed on middle sliding rail (9) front end, second connecting rod (24) it is another
One end and the rear end of ipsilateral footrest rack (22) are hinged；Before one end of 5th drive rod (25) and ipsilateral interior sliding rail (10)
End is hinged, and the other end of the 5th drive rod (25) and ipsilateral footrest rack (22) are hinged；Second connecting rod (24), the 5th drive rod
(25), four-bar mechanism is constituted between interior sliding rail (10) and footrest rack (22).
14. according to a kind of collapsible leg rest mechanism as claimed in claim 4, it is characterised in that: the two sides of the seat frame (1) are also
It is equipped with positive stop spring plate (26), the positive stop spring plate (26) is located at the rear end of external slide rail (8).
15. according to a kind of collapsible leg rest mechanism described in claim 14, it is characterised in that: the positive stop spring plate (26) includes solid
Determine portion (36) and sticking department (37), the positive stop spring plate (26) is installed by fixed part (36) on seat frame (1), the lock
Determine portion (37) and be equipped with lead-in chamfered (38) in face of the side of slide track component (2), lock tab bubble is provided on sticking department (37)
(39), limitation locking hole (40) are offered on the interior sliding rail (10), when leg rest frame (3) are collapsed, interior sliding rail (10) is backward
It slides, the limitation locking hole (40) on interior sliding rail (10), which is moved on the lock tab bubble (39) of positive stop spring plate (26), completes locking.
16. according to a kind of collapsible leg rest mechanism as claimed in claim 2, it is characterised in that: the other end of the drive shaft (5) is cut with scissors
It is connected to spring guide holder (27), the seat frame (1) is additionally provided with spring fixed seat (28), the spring guide holder (27)
Guiding axis is inserted in spring fixed seat (28), is also equipped with pressure between the spring fixed seat (28) and spring guide holder (27)
Spring.
17. a kind of seat, it is characterized in that including back frame and the collapsible leg rest as described in claim 1 to 16 any one
Mechanism, the back frame connect seat frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811101499.XA CN109984504A (en) | 2018-09-20 | 2018-09-20 | A kind of collapsible leg rest mechanism and seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811101499.XA CN109984504A (en) | 2018-09-20 | 2018-09-20 | A kind of collapsible leg rest mechanism and seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109984504A true CN109984504A (en) | 2019-07-09 |
Family
ID=67128341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811101499.XA Withdrawn CN109984504A (en) | 2018-09-20 | 2018-09-20 | A kind of collapsible leg rest mechanism and seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109984504A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113768305A (en) * | 2020-07-02 | 2021-12-10 | 永艺家具股份有限公司 | Multifunctional leisure chair frame structure and supporting and sitting method thereof |
-
2018
- 2018-09-20 CN CN201811101499.XA patent/CN109984504A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113768305A (en) * | 2020-07-02 | 2021-12-10 | 永艺家具股份有限公司 | Multifunctional leisure chair frame structure and supporting and sitting method thereof |
| CN113768305B (en) * | 2020-07-02 | 2023-07-25 | 永艺家具股份有限公司 | Multifunctional leisure chair frame structure and supporting and sitting method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190709 |