CN209121621U - Leg rest turnover driving mechanism - Google Patents
Leg rest turnover driving mechanism Download PDFInfo
- Publication number
- CN209121621U CN209121621U CN201821546590.8U CN201821546590U CN209121621U CN 209121621 U CN209121621 U CN 209121621U CN 201821546590 U CN201821546590 U CN 201821546590U CN 209121621 U CN209121621 U CN 209121621U
- Authority
- CN
- China
- Prior art keywords
- drive rod
- leg rest
- frame
- drive
- seat frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The utility model relates to leg rest turnover driving mechanisms, it is arranged in seat frame, including leg rest frame, second connecting rod, 5th drive rod, second crossbar and the 6th drive rod, leg rest frame includes the footrest rack for being symmetricly set on seat frame two sides, second connecting rod is arranged symmetrically and hinged with footrest rack rear end, 5th drive rod is arranged symmetrically and hinged with two footrest racks respectively, second crossbar both ends connect two the 5th drive rods, 6th drive rod is symmetrical arranged and connect respectively with second crossbar both ends, ipsilateral footrest rack, second connecting rod, 5th drive rod and the 6th drive rod constitute four-bar mechanism；When the 6th drive rod moves to rearmost end, leg rest frame is below seat frame and at an acute angle with seat frame；When the 6th drive rod moves to front end, leg rest frame and seat frame are substantially on the same face.This leg rest turnover driving mechanism folds, expansion is more laborsaving, and can carry out maximum angle folding to leg rest frame.
Description
Technical field
The utility model belongs to technical field of furniture more particularly to leg rest turnover driving mechanism.
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.
Summary of the invention
In order to solve the above technical problems, the purpose of the utility model is to provide it is a kind of fold, expansion it is more laborsaving, and
And the collapsible leg rest machine leg rest turnover driving mechanism of maximum angle folding can be carried out to leg rest frame.
In order to achieve the above purpose, the utility model uses technical solution below:
Leg rest turnover driving mechanism, be arranged in seat frame, including leg rest frame, second connecting rod, the 5th drive rod,
Second crossbar and the 6th drive rod, the leg rest frame include the footrest rack for being symmetricly set on seat frame two sides, and second connects
Bar be symmetrical arranged and with footrest rack rear end is hinged, the 5th drive rod is symmetrical arranged and hinged, second horizontal with two footrest racks respectively
Bar both ends connect two the 5th drive rods, and the 6th drive rod is symmetrical arranged and connect respectively with second crossbar both ends, described ipsilateral
Footrest rack, second connecting rod, the 5th drive rod and the 6th drive rod constitute four-bar mechanism；It is moved to finally in the 6th drive rod
Leg rest frame is below the seat frame and at an acute angle with the seat frame when end；Before the 6th drive rod moves to most
When end, the leg rest frame and the seat frame are substantially on the same face.
Preferably, the front end of two footrest racks is connected with toe board.
Preferably, the hinge joint of the footrest rack and the 5th drive rod is between footrest rack both ends and the hinge joint more leans on
The rear end of nearly footrest rack.
Compared with prior art, the utility model has the beneficial effects that
The utility model folds, expansion is more laborsaving, and can carry out maximum angle folding to leg rest frame, is folding
When leg rest frame and seat frame it is at an acute angle or even close to parallel, in this way when not making leg rest in use, human leg will not touch
Encounter leg rest frame, and shape seems more beautiful, the ground cleaning below portions not will receive any obstruction.
When the 6th drive rod moves backward, second crossbar is driven to move backward, so that the 5th drive rod of two sides is synchronous
It moves backward, so that footrest rack be driven to rotate backward using the hinge joint of itself and second connecting rod as center of rotation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the collapsible leg rest mechanism of the utility model in the deployed state.
Fig. 2 is the explosive view of the collapsible leg rest mechanism of the utility model.
Fig. 3 is the structural schematic diagram at collapsible leg rest mechanism another visual angle in the deployed state of the utility model.
Fig. 4 is structural schematic diagram of the collapsible leg rest mechanism of the utility model during expansion.
Fig. 5 is structural schematic diagram of the collapsible leg rest mechanism of the utility model 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:
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, external slide 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
It is 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, hinged
Portion 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, spring fixed seat 28, guide rail fixed metal plate 29, middle rail metal plate 30, internal rail metal plate 31, munnion 32, C-shaped axle bed 33, C-shaped baffle
34, reinforcing rod 35, fixed part 36, sticking department 37, lead-in chamfered 38, lock tab steep 39, limitation locking hole 40, limited post 41.
Specific embodiment
Specific embodiment of the present utility model is made a detailed explanation with reference to the accompanying drawing.
The reference azimuth of each component of the utility model is defined first, and the utility model makes on chassis and seat in normal mounting
Used time, the front of seat are 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 rail group being mounted in seat frame 1
Part 2, 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 be relative to the slide track component 2 around the
One pivot axis 4 pivots between folding position and expanded position；As shown in figure 5, in the folding position, the leg rest frame
3 settings are below the seat frame 1 and at an acute angle with the seat frame 1；As shown in Figure 1, Figure 3, in the expansion position
It sets, 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 pivot
It shaft axis 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, behaviour
One end of the drive shaft 5 is connected to as bar, and operating stick is approximately perpendicular to the setting of drive shaft 5；
First connecting rod 7 and bar-link drive, rotation of the first connecting rod 7 in response to the drive shaft 5, and the company of drive
Bar driving mechanism is to drive the slide track component 2 to be moved to gathering to expanded position from the position collapsed into expanded position
In another position, and drive leg rest frame 3 to be moved to from the position folded and unfolded in position and fold and unfold position
Another position in setting.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
The rotation of moving axis 5 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
The 6th drive rod of 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 on outer
Can slide back and forth in sliding rail 8 and along external slide rail 8, interior the 6th drive rod of sliding rail 10() to be mounted on middle sliding rail 9 interior and can be along middle sliding rail 9
It slides back and forth.
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；In interior the 6th drive rod of sliding rail 10() be fixedly arranged at the front end with internal rail metal plate 31, two internal rail metal plates 31
Between be fixed with second crossbar 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 being symmetrical arranged in interior the 6th drive rod of sliding rail 10() footrest racks 22 of two sides, in two leg rests
The front end of frame 22 is provided with 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
In interior the 6th drive rod of sliding rail 10() two the 5th drive rods 25 of front end.One end of second connecting rod 24 is fixed on middle rail metal plate 30
On, it 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.
One end of 5th drive rod 25 and internal rail metal plate 31 are hinged, and specific hinge joint is located at interior the 6th drive rod of sliding rail 10() front end,
The other end of 5th drive rod 25 and ipsilateral footrest rack 22 are hinged, and hinge joint is between the both ends of footrest rack 22 and this is hinged
It puts closer to the rear end of footrest rack.At this point, second connecting rod 24, the 5th drive rod 25, interior the 6th drive rod of sliding rail 10() and put
Four-bar mechanism is constituted between foot prop 22, as shown in Figure 10,11.
As shown in figure 8, preventing middle sliding rail 9 and interior the 6th drive rod of sliding rail 10(to limit to slide track component 2) it is sliding
External slide rail out is also equipped with positive stop spring plate 26 in the two sides of seat frame 1, and the positive stop spring plate 26 is located at the rear end of external slide rail 8.
The positive stop spring plate 26 includes fixed part 36 and sticking department 37, and the positive stop spring plate 26 is installed by fixed part 36 to portions frame
On frame 1, the sticking department 37 is equipped with lead-in chamfered 38 in face of the side of slide track component 2, is provided with lock tab on sticking department 37
Bubble 39, interior the 6th drive rod of sliding rail 10() on offer limitation locking hole 40, leg rest frame 3 collapse when, interior sliding rail 10
(the 6th drive rod) slides backward, when interior the 6th drive rod of sliding rail 10() rear end when touching lead-in chamfered 38, interior sliding rail 10
(the 6th drive rod) inwardly squeezes lead-in chamfered 38, when interior the 6th drive rod of sliding rail 10() slide backwards on limitation locking hole 40
When being moved to the lock tab bubble 39 of positive stop spring plate 26, homing, lock tab bubble 39 enter limit to sticking department 37 under the effect of elasticity
In the lock hole 40 of position, 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, interior the 6th drive rod of sliding rail 10() and put
Four-bar mechanism running is constituted between foot prop 22, and leg rest frame 3 is finally made to overturn opening forward.When needing to fold leg rest frame 3
When, only need opposite direction to rotate operating stick.
Above content is only illustrate to examples for clearly illustrating the present invention described in this specification.The utility model
Person of ordinary skill in the field can make various modifications or additions to the described embodiments or using class
As mode substitute, content without departing from the utility model specification or surmount model defined in the claims
It encloses, all should belong to the protection range of the utility model.
Claims (3)
1. leg rest turnover driving mechanism, setting is in seat frame (1), it is characterised in that: including leg rest frame (3), second
Connecting rod (24), the 5th drive rod (25), second crossbar (12) and the 6th drive rod, the leg rest frame (3) include symmetrically setting
The footrest rack (22) in seat frame (1) two sides is set, second connecting rod (24) is arranged symmetrically and hinged with footrest rack (22) rear end, the
Five drive rods (25) be symmetrical arranged and respectively with two footrest racks (22) hingedly, second crossbar (12) both ends connect two the 5th drive
Lever (25), the 6th drive rod are symmetrical arranged and connect respectively with second crossbar (12) both ends, the ipsilateral footrest rack (22),
Second connecting rod (24), the 5th drive rod (25) and the 6th drive rod constitute four-bar mechanism；It is moved to finally in the 6th drive rod
Leg rest frame (3) is below the seat frame and at an acute angle with the seat frame when end；It is moved in the 6th drive rod
When front end, the leg rest frame and the seat frame are substantially on the same face.
2. according to leg rest turnover driving mechanism described in claim 1, it is characterised in that: the front end of two footrest racks (22) is connected with
Toe board (23).
3. according to leg rest turnover driving mechanism described in claim 1, it is characterised in that: the footrest rack (22) and the 5th drive rod
(25) hinge joint is between footrest rack (22) both ends and the hinge joint is closer to the rear end of footrest rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821546590.8U CN209121621U (en) | 2018-09-20 | 2018-09-20 | Leg rest turnover driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821546590.8U CN209121621U (en) | 2018-09-20 | 2018-09-20 | Leg rest turnover driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209121621U true CN209121621U (en) | 2019-07-19 |
Family
ID=67229032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821546590.8U Expired - Fee Related CN209121621U (en) | 2018-09-20 | 2018-09-20 | Leg rest turnover driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209121621U (en) |
-
2018
- 2018-09-20 CN CN201821546590.8U patent/CN209121621U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190719 Termination date: 20210920 |