CN207477254U - Leg support driving mechanism - Google Patents
Leg support driving mechanism Download PDFInfo
- Publication number
- CN207477254U CN207477254U CN201720588483.0U CN201720588483U CN207477254U CN 207477254 U CN207477254 U CN 207477254U CN 201720588483 U CN201720588483 U CN 201720588483U CN 207477254 U CN207477254 U CN 207477254U
- Authority
- CN
- China
- Prior art keywords
- frame
- drive shaft
- sliding block
- leg support
- driving mechanism
- 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
Links
- 230000006835 compression Effects 0.000 claims description 22
- 238000007906 compression Methods 0.000 claims description 22
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920000297 Rayon Polymers 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 230000003796 beauty Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 11
- 210000003734 kidney Anatomy 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 208000012802 recumbency Diseases 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The utility model discloses a kind of leg support driving mechanism, including：Seat frame, leg rest frame and drive shaft, the leg rest frame are pivotally connected to the seat frame；Drive shaft is rotatably mounted in the seat frame, the first slider-crank mechanism and the first drive rod are connected between drive shaft and leg rest frame, first slider-crank mechanism includes the first crank, first connecting rod and the first sliding block, one end of first crank is fixedly connected with drive shaft, the both ends of first connecting rod are hinged respectively with the other end of the first crank, the first sliding block, guide rod is provided in seat frame, first sliding block is slidably matched with guide rod；The both ends of first drive rod respectively with the first sliding block, leg rest frame articulation；Using slider-crank mechanism, scope of activities is small during the motion, can be completely encased by inside Soft Roll, can both realize beauty, the risk of traditional scissors angle clamp hand will not occurs for the leg rest driving of the utility model.
Description
Technical field
The utility model is related to technical fields such as leisure chaise longue, Leisure Sofa, office chairs, more particularly to a kind of collapsible leg support
Mechanism and thing to sit on.
Background technology
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 be required for relax.Traditional office chair
All it is to be made of backrest, seat cushion and sustainable chair leg, backrest, seat cushion position are all relatively-stationary, can not be lain for people
Lower rest.Office worker, which usually requires in addition to purchase the furniture for being suitble to lie down, could realize 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 problem, some chairs with leg rest rest gradually appear, leg rest portion by various modes with chair
It rolls into one, than if any a kind of chair with leg support frame or leg rest frame, which can be in extended position and folding
It is overturn between position；Type of drive is to use four-bar mechanism, but scope of activities is big during the motion for four-bar mechanism, no
Enough both artistic and practical, occupied space is big, is susceptible to the risk of scissors hand clamp hand, more laborious when besides leg rest frame is overturn.
Utility model content
The purpose of this utility model is to overcome the deficiency in the presence of the above-mentioned prior art, provide it is a kind of fold,
Expansion is more laborsaving, and motion ratio is smoothly, and bearing capacity is strong, long lifespan；Scope of activities is small during the motion, can be complete
Full packet can both realize beauty, the leg support driving mechanism that the risk of traditional scissors angle clamp hand will not occur inside Soft Roll.
Technical solution is used by the utility model realizes its purpose of utility model：
A kind of leg support driving mechanism, including：Seat frame, leg rest frame and drive shaft, the leg rest frame is pivotally
It is connected to the seat frame；Drive shaft is rotatably mounted in the seat frame, between drive shaft and leg rest frame
The first slider-crank mechanism and the first drive rod are connected with, first slider-crank mechanism includes the first crank, the first company
Bar and the first sliding block, one end of the first crank are fixedly connected with drive shaft, the both ends of first connecting rod respectively with the first crank
The other end, the first sliding block are hinged, and guide rod is provided in seat frame, and first sliding block is slidably matched with guide rod；The
The both ends of one drive rod respectively with the first sliding block, leg rest frame articulation.
Opposite first crossbeam, second cross beam are spaced preferably, being fixed in seat frame, guide rod has always
Section and be located at the curved segment at straight section both ends, two curved segments connect first crossbeam, second cross beam respectively, the first sliding block and guide rod it is straight
Section is slidably matched.
Preferably, the cross section of guide rod is circle.With Cylindrical Surfaces Contact between guide rod sliding block, frictional resistance is small, fortune
Smoothly, bearing capacity is strong for dynamic ratio, long lifespan.
Preferably, first sliding block includes the nonmetallic sliding part being socketed with guide rod, the nonmetallic cunning
U-clamp plate is surrounded by outside moving part, first connecting rod, the end of the first drive rod and U-clamp plate are hinged.First sliding block is divided into two parts,
A part is hinged with first connecting rod, the first drive rod, and another part is wrapped up and is slidably matched with guide rod, rational in infrastructure, respectively
Play respective effect.
Preferably, the nonmetallic sliding part is nylon or rubber block.
Preferably, it is fixed with to control the operating lever of drive shaft turns in one end of drive shaft.
Two opposite supporting plates are spaced preferably, further including and when leg rest frame overturns to the pressure of power-assisted
Spring, the both ends of supporting plate are connected with seat frame, and cross bar is connected between two supporting plates, and compression spring is arranged on cross bar with driving
Between moving axis, engaging lug is fixedly installed in drive shaft, one end of compression spring is hinged by the first bulb with engaging lug, compression spring it is another
One end is hinged by the second bulb with cross bar.Compression spring compares tension spring low manufacture cost, long lifespan.
Preferably, first bulb, the second bulb are respectively connected with sleeve, two casings are in compression spring and cover
It is connected together, the first bulb, the second bulb are respectively connected to compression spring both ends.It can prevent compression spring from generating large curved in this way, together
When compression spring can be fixed between drive shaft and seat frame again.
Employing the design starting point, theory and advantageous effect of the utility model of above-mentioned technical proposal is：
1. the leg rest of the utility model, which drives, uses slider-crank mechanism, with Cylindrical Surfaces Contact, friction between guide rod sliding block
Resistance is small, and smoothly, bearing capacity is strong for motion ratio, long lifespan；Scope of activities is small during the motion, can be completely encased by Soft Roll
Inside can both realize beauty, the risk of traditional scissors angle clamp hand will not occur.Crank connecting link is realizing phase with double leval jib
In the case of same effect, the arm of force of crank connecting link is longer, more effortless.
2. the leg support mechanism of the utility model is fabricated to during unfolded using compression spring power-assisted, compression spring compared to tension spring
This low, long lifespan.
3. the leg rest driving of the utility model is using crank block, thus it is possible to vary the length of crank to adapt to various chassis,
Reach that 95% part is identical, greatly reduce the cost of product development, realize finished product modularization.
Description of the drawings
Fig. 1 is stereoscopic-state schematic diagram of the leg support mechanism in unfolded state in embodiment；
Fig. 2 is the stereoscopic-state schematic diagram of the utility model leg support mechanism in a folded configuration；
Fig. 3 is schematic diagram of the leg support mechanism when that will be unfolded；
Fig. 4 is the status diagram of leg support mechanism another angle upon deployment；
Fig. 5 is the status diagram of leg support mechanism another angle upon deployment；
Fig. 6 is the A portions enlarged drawing of Fig. 5；
Fig. 7 is the structure diagram of the second slider-crank mechanism；
Fig. 8 is the structure diagram of another angle of the second slider-crank mechanism；
Fig. 9 is the schematic diagram of leg support mechanism another angle when that will be unfolded；
Figure 10 is the status diagram of leg support mechanism another angle upon deployment；
Figure 11 is the mounting structure schematic diagram of drive shaft；
Figure 12 is the mounting plane structure diagram of drive shaft.
Specific embodiment
The technical solution of the utility model is described in further detail below by specific embodiment and with reference to attached drawing.
Embodiment：The leg support driving mechanism of the utility model be collapsible leg support mechanism important component, Fig. 1~
In embodiment shown in 12, a kind of collapsible leg support mechanism, including：
Base frame unit, including the seat frame with seat frame 1；Seat frame 1 has substantially quadrilateral structure；
Leg rest frame 2, is pivotally connected to the seat frame 1 and can be relative to the seat frame 1 around the
One pivot axis 3 pivots between folding position and expanded position；As shown in Fig. 2, in the folding position, the leg rest frame
2 are arranged on 1 lower section of the seat frame and at an acute angle with the seat frame 1；In the expanded position, such as Fig. 1,4,5,10
It is shown, wherein the leg rest frame 2 is substantially on the same face with the seat frame 1；
Operating unit, the drive shaft 4 including being arranged on 3 rear of the first pivot axis, is parallel to first pivot
Shaft axis 3 and be rotatably mounted in the seat frame 1 and：
Actuator, for drive shaft 4 to be driven to be rotated around center axis；Specifically, the actuator is operation
Bar 5, the operating lever is connected to one end of the drive shaft, and operating lever 5 is approximately perpendicular to drive shaft 4 and sets.
First slider-crank mechanism 6 and the first drive rod 44, first slider-crank mechanism 6 is in response to the drive shaft
4 rotation, and the first drive rod 44 is driven so that the leg rest frame 2 to be driven to be moved from a position in folding and expanded position
To another position in folding and expanded position.
Specifically, first slider-crank mechanism 6 includes the first crank 7,8 and first sliding block 9 of first connecting rod,
First crank 7,8 and first sliding block 9 of first connecting rod are to be arranged in pairs, and one end of the first crank 7 and the welding of drive shaft 4 are solid
Fixed, the both ends of first connecting rod 8 are hinged with the other end of the first crank 7, the first sliding block 9 respectively, and guiding is provided in seat frame 1
Bar 10, first sliding block 9 are slidably matched with guide rod 10；The both ends of first drive rod 44 respectively with the first sliding block 9, leg rest
Frame 2 is hinged.
It is fixed in seat frame 1 and is spaced opposite first crossbeam 11, second cross beam 12, guide rod 10 has a straight section
13 and the curved segment 14 at 13 both ends of straight section is located at, two curved segments 14 connect first crossbeam 11, second cross beam 12, the first sliding block 9 respectively
It is slidably matched with the straight section 13 of guide rod 10；It further says, the cross section of guide rod 10 is circle, as shown in Fig. 2, described
First sliding block 9 includes the nonmetallic sliding part 15 being socketed with guide rod 10, and the nonmetallic sliding part 15 is nylon or rubber
Block；It is surrounded by U-clamp plate 16 outside the nonmetallic sliding part 15, the center of first connecting rod 8 is between U-clamp plate 16 and and U
Clevis plate 16 is hinged.First connecting rod 8, the first drive rod 44 are hinged with U-clamp plate 16
As shown in Fig. 1,11,12, the drive shaft 4 is erected on two axle bed plates 17, the axle bed plate 17 and
One crossbeam 11 is fixedly linked and basically perpendicular to first crossbeam 11, and axle bed plate 17 is equipped with what is connected with 17 lateral edge of axle bed plate
Notch 18,18 inner end of notch form axis hole 19, further include there are two C-shaped baffle 20, drive shaft 4 is put into along notch 18 in axis hole 19
Afterwards, C-shaped baffle 20 blocks drive shaft 4 and closes notch 18, while is screwed be bonded with axle bed plate 17 again after connected.
The leg support mechanism of the present embodiment is further included in folding and expansion to the compression spring of power-assisted 21；Specifically, such as
Fig. 1, it shown in 3, further includes and is spaced two opposite supporting plates 22, the both ends of supporting plate 22 connect second cross beam 12, driving respectively
Axis 4 is connected with cross bar 23 between two supporting plates 22, and compression spring 21 is arranged between cross bar 23 and drive shaft 4, in drive shaft 4
Engaging lug 24 is fixedly installed, one end of compression spring 21 is hinged with engaging lug 24 by the first bulb 25, and the other end of compression spring 21 leads to
It is hinged with cross bar 23 to cross the second bulb 26；First bulb 25, the second bulb 26 are respectively connected with sleeve 27, two casings
27 are in compression spring 21 and connect together, and the first bulb 25, the second bulb 26 are respectively connected to 21 both ends of compression spring.
It further says, the leg rest frame 2 includes the first frame 28, the second frame 29, the first frame 28, the second frame
Frame 29 is that substantially quadrilateral structure, the first frame 28 is slidably matched, and the first frame 28 and the second frame with the second frame 29
Attachment device 30 is equipped between frame 29, and attachment device 30 is in response to the movement of the first drive rod 44；It is unfolded in leg rest frame 2
When the first frame 28 slide and extend outwardly relative to the second frame 29, when leg rest frame 2 folds the first frame 28 relative to
Second frame 29 is slided and is inwardly retracted.
First drive rod, 44 both ends are hinged with the first slider-crank mechanism 6, the second frame 29 respectively, specifically, first
One end of drive rod 44 and the first sliding block 9 in the first slider-crank mechanism 6 are hinged, and the attachment device 30 includes second and connects
Bar 33, the second sliding block 34 and the second drive rod 32, one end of second connecting rod 33 and the first drive rod close on the first drive rod 44
44 are hinged with the position of 29 hinge joint of the second frame, and the other end of second connecting rod 33 and the second sliding block 34 are hinged, and described second
Sliding block 34 is slidably matched with the sliding rail 35 being arranged on the second frame 29；Second drive rod 32 is rotatablely connected with the second frame 29,
And 32 both ends of the second drive rod are hinged with the second sliding block 34, the first frame 28 respectively；Specifically, it is equipped in the second frame 29
The support plate 38 extended in towards the second frame 29, the second drive rod 32 are rotatablely connected with support plate 38 by the second axis pin 39.
As shown in Figure 7,8, the other end of second connecting rod 33 and the second sliding block 34 are hinged by the first axis pin 36, in sliding rail 35
The flat recess 37 set along 34 glide direction of the second sliding block is equipped with, first axis pin 36 is plugged in flat recess 37.
Further say, to enable the second drive rod 32 that the first frame 28 to be driven to slide freely, the second drive rod 32
One end is hinged by third axis pin 40 with the second sliding block 34；In 40 and second drive rod 32 of third axis pin or the second sliding block 34
One is connected, and kidney slot is equipped on another in the second drive rod 32 or the second sliding block 34, the third axis pin
40 are plugged in kidney slot 41；The other end of second drive rod 32 and the first frame 28 are hinged by the 4th axis pin 42；4th pin
Axis 42 is connected with one in the second drive rod 32 or the first frame 28, and in the second drive rod 32 or the first frame 28
Another is equipped with kidney slot 43, and the 4th axis pin 42 is plugged in kidney slot 43.
The present embodiment separately provides a kind of thing to sit on, it includes back frame (not shown) and collapsible leg support as described above
Mechanism, back frame connection seat frame.It is placed in seat frame and leg rest frame and fixes the soft packing materials such as cushion
Material form seat, people is sitting in seat frame, can hand operating lever, driving drive shaft rotation, make drive the first crank block machine
Structure moves, and then the first sliding block is driven to slide, and as shown in Fig. 3,9, the first sliding block slides and drives the movement of the first drive rod again, and then
Leg rest frame is made to be opened around seat frame to overturning in front of portions, meanwhile, the first frame extends outwardly again along the second frame, makes to put
Leg lengths of frame is enough to support human leg, and final unfolded state is as shown in Fig. 1,4,10；When needing to fold leg rest frame, instead
The hand operating lever in direction, leg rest frame downwards and are turned over around seat frame, while the first frame is along the second frame to interior lines
Property movement retract, end-state is as shown in Figure 2.
Claims (8)
1. a kind of leg support driving mechanism, it is characterised in that including：Seat frame, leg rest frame and drive shaft, the leg rest frame
Frame is pivotally connected to the seat frame；Drive shaft is rotatably mounted in the seat frame, in drive shaft and leg rest
The first slider-crank mechanism and the first drive rod are connected between frame, it is bent that first slider-crank mechanism includes first
Handle, first connecting rod and the first sliding block, one end of the first crank are fixedly connected with drive shaft, and the both ends of first connecting rod are respectively with
The other end of one crank, the first sliding block are hinged, and guide rod is provided in seat frame, and first sliding block is slided with guide rod
Cooperation；The both ends of first drive rod respectively with the first sliding block, leg rest frame articulation.
2. leg support driving mechanism according to claim 1, it is characterised in that：It is opposite that interval is fixed in seat frame
First crossbeam, second cross beam, guide rod have a straight section and are located at the curved segment at straight section both ends, and two curved segments connect the first horizontal stroke respectively
The straight section of beam, second cross beam, the first sliding block and guide rod is slidably matched.
3. leg support driving mechanism according to claim 1 or 2, it is characterised in that：The cross section of guide rod is circle.
4. leg support driving mechanism according to claim 1, it is characterised in that：First sliding block is included with being oriented to rod set
The nonmetallic sliding part connect, the nonmetallic sliding part are surrounded by U-clamp plate, first connecting rod, the end of the first drive rod and U outside
Clevis plate is hinged.
5. leg support driving mechanism according to claim 4, it is characterised in that：The nonmetallic sliding part is nylon or rubber
Blob of viscose.
6. leg support driving mechanism according to claim 1, it is characterised in that：It is fixed with to control in one end of drive shaft
The operating lever of drive shaft turns processed.
7. leg support driving mechanism according to claim 1, it is characterised in that：Further include be spaced opposite two supporting plates with
And be connected when leg rest frame overturns to the compression spring of power-assisted, the both ends of supporting plate with seat frame, two supporting plates it
Between be connected with cross bar, compression spring is arranged between cross bar and drive shaft, and engaging lug is fixedly installed in drive shaft, and one end of compression spring leads to
It crosses the first bulb to be hinged with engaging lug, the other end of compression spring is hinged by the second bulb with cross bar.
8. leg support driving mechanism according to claim 7, it is characterised in that：First bulb, the second bulb are respectively
Sleeve is connected with, two casings are in compression spring and connect together, and the first bulb, the second bulb are respectively connected to compression spring two
End.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720588483.0U CN207477254U (en) | 2017-05-10 | 2017-05-10 | Leg support driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720588483.0U CN207477254U (en) | 2017-05-10 | 2017-05-10 | Leg support driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207477254U true CN207477254U (en) | 2018-06-12 |
Family
ID=62484110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720588483.0U Expired - Fee Related CN207477254U (en) | 2017-05-10 | 2017-05-10 | Leg support driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207477254U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109050369A (en) * | 2018-08-21 | 2018-12-21 | 重庆延锋安道拓汽车部件系统有限公司 | Telescopic leg holder structure for automotive seat |
| CN113261797A (en) * | 2021-05-24 | 2021-08-17 | 江西省南城县发华实业有限公司 | Student's tablet chair with flexible function is convenient for have a rest |
-
2017
- 2017-05-10 CN CN201720588483.0U patent/CN207477254U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109050369A (en) * | 2018-08-21 | 2018-12-21 | 重庆延锋安道拓汽车部件系统有限公司 | Telescopic leg holder structure for automotive seat |
| CN113261797A (en) * | 2021-05-24 | 2021-08-17 | 江西省南城县发华实业有限公司 | Student's tablet chair with flexible function is convenient for have a rest |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9420889B2 (en) | Furniture unit convertible to bed | |
| CN207477253U (en) | Collapsible leg support mechanism and thing to sit on | |
| CN207477254U (en) | Leg support driving mechanism | |
| CN203137687U (en) | Sofa used as both deck chair and bed | |
| CN113749456A (en) | Seat unit convertible into a bed | |
| JP2006502766A (en) | A reclining chair with a footrest mechanism that folds and extends upward | |
| CN109393818A (en) | Electric functions sofa | |
| CN207477252U (en) | Leg support linear extendible mechanism | |
| CN108851704A (en) | A kind of collapsible leg support mechanism and thing to sit on | |
| CN213720905U (en) | Ottoman linkage device, frame body and seat | |
| CN103347421A (en) | Furniture piece | |
| CN207461788U (en) | For the driving shaft-assembling structure of collapsible leg support | |
| RU158325U1 (en) | UPHOLSTERED TRANSFORMATION DEVICE | |
| CN112244552A (en) | Ottoman linkage device, frame body and seat | |
| CN112293997A (en) | Power stretching device | |
| KR20200047084A (en) | Electric double sofa bed | |
| CN209219611U (en) | Leg rest retractable driving device | |
| JP6163332B2 (en) | Folding chair | |
| CN207055241U (en) | The leisure chaise longue that a kind of human body power control step is closed flat | |
| CN210872789U (en) | Linkage type massage chair frame | |
| CN213820608U (en) | Power stretching device | |
| CN201452289U (en) | Deck chair | |
| CN210433155U (en) | Extension transmission assembly of automatic sofa iron frame | |
| CN208259398U (en) | A kind of adjustable chair | |
| KR101931677B1 (en) | a sofa bed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |