CN207477252U - Leg support linear extendible mechanism - Google Patents
Leg support linear extendible mechanism Download PDFInfo
- Publication number
- CN207477252U CN207477252U CN201720588414.XU CN201720588414U CN207477252U CN 207477252 U CN207477252 U CN 207477252U CN 201720588414 U CN201720588414 U CN 201720588414U CN 207477252 U CN207477252 U CN 207477252U
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- Prior art keywords
- frame
- drive rod
- sliding block
- rod
- axis pin
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- 230000007246 mechanism Effects 0.000 title claims abstract description 50
- 210000003734 kidney Anatomy 0.000 claims description 12
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 11
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000003796 beauty Effects 0.000 description 2
- 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
- 238000012856 packing Methods 0.000 description 1
- 208000012802 recumbency Diseases 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
Abstract
The utility model discloses a kind of leg support linear extendible mechanisms, and including seat frame, leg rest frame and drive shaft, leg rest frame is pivotally connected to the seat frame；Being mounted in seat frame for drive shaft rotation, is connected with the first slider-crank mechanism and the first drive rod between drive shaft and leg rest frame；Leg rest frame includes the first frame, the second frame, second frame is pivoted with seat frame to be coordinated, first drive rod both ends respectively with the first slider-crank mechanism, the second frame articulation, first frame is slidably matched with the second frame, attachment device is equipped between first frame and the second frame, attachment device responds the movement of the first drive rod；The first frame extends outwardly relative to the second frame upon deployment, and when folding, the first frame is inwardly retracted relative to the second frame；The leg rest frame of the utility model is made of the first frame, the second frame being slidably matched, and has not only met the use demand of different height crowds, but also meets the space-saving requirement of folding storage.
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 leg support is linearly stretched
Contracting mechanism.
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, and besides leg rest lengths of frame cannot meet all
The requirement of people, somebody require longer, and some requirements are shorter, if setting is longer, are difficult to be contracted to when folding
Below seat cushion；If setting is shorter, it is difficult to the leg rest requirement for meeting the higher people of height.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the presence of the above-mentioned prior art, provide a kind of leg rest frame
The leg support linear extendible mechanism that frame shortens elongated upon deployment when folding, while disclosure satisfy that in stable condition during expansion want again
It asks, is not in rock；Scope of activities is small during the motion for leg rest frame simultaneously, can be completely encased by inside Soft Roll, both may be used
To realize beauty, the risk that traditional scissors angle clamp hand will not occur.
Technical solution is used by the utility model realizes its purpose of utility model：
Leg support linear extendible 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
It is connected with the first slider-crank mechanism and the first drive rod；The leg rest frame includes the first frame, the second frame, the second frame
Frame and seat frame, which pivot, to be coordinated, the first drive rod both ends respectively with the first slider-crank mechanism, the second frame articulation, the first frame
Frame is slidably matched with the second frame, and attachment device is equipped between the first frame and the second frame, the attachment device response
In the movement of the first drive rod；When leg rest frame is unfolded, the first frame is slided and is extended outwardly relative to the second frame, is being put
The first frame is slided relative to the second frame and is inwardly retracted when leg frame folds.
Preferably, first slider-crank mechanism include the first crank, first connecting rod and the first sliding block, first
One end of crank is fixedly connected with drive shaft, and 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 attachment device includes second
Connecting rod, the second sliding block and the second drive rod, one end of second connecting rod and the first drive rod and the second frame close on the first drive rod
The position of frame hinge joint is hinged, and the other end of second connecting rod is hinged with the second sliding block, and second sliding block is with being arranged on second
Sliding rail on frame is slidably matched；Second drive rod is connect with the second frame member, and the second drive rod both ends are respectively with second
Sliding block, the first frame articulation.Above structure is employed, i.e., determines track using Double-sliding rail mechanism, between control machine component
Gap it is relatively easy, so more firm in the deployed state；First drive rod, the second drive rod and the first slide crank simultaneously
Block mechanism realizes linkage, simplifies driving structure to a certain extent, so that leg rest frame is while expansion, the first frame
Extension can be synchronized outward again, elongated the entire length of leg rest frame.
Preferably, the other end of second connecting rod is hinged with the second sliding block by the first axis pin, it is equipped on sliding rail along the
The flat recess of two sliding block glide directions setting, first axis pin are plugged in flat recess.First axis pin is inserted in flat recess
It is limited, the second sliding block is made to be slided along sliding rail.
Preferably, being provided with the support plate extended in the second frame in the second frame, drive rod leads to support plate
Cross the rotation connection of the second axis pin.The both ends of drive rod are rotated around the second axis pin.
Preferably, one end of drive rod is hinged with the second sliding block by third axis pin；Third axis pin and drive rod or
Second, which slides one in the block, is connected, and is slided in drive rod or second and in the block kidney slot, the third are equipped on another
Axis pin is plugged in kidney slot.Second sliding block is moved along sliding rail, and is passed through third axis pin and stirred drive rod rotation.
Preferably, the other end of drive rod is hinged with the first frame by the 4th axis pin；4th axis pin and drive rod or
One in first frame is connected, and kidney slot is equipped on another in drive rod or the first frame, and the described the 4th
Axis pin is plugged in kidney slot.When drive rod rotates, stir the first frame further through the 4th axis pin and move in or out.
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, and another part is wrapped up and is slidably matched with guide rod, rational in infrastructure, respectively plays respective work
With.
Preferably, the nonmetallic sliding part is nylon or rubber block.
Employing the design starting point, theory and advantageous effect of the utility model of above-mentioned technical proposal is：
The leg rest frame of the utility model is made of the first frame, the second frame being slidably matched, and leg rest frame is folding
When the first frame be retracted in the second frame leg rest lengths of frame made to shorten, and upon deployment the first frame along the second frame to
Outer extension makes leg rest frame entirety elongated, has not only met the use demand of different height crowds, but also meet folding storage saving
The requirement in space；Using slider-crank mechanism, scope of activities is small during the motion, can be completely encased by soft for leg rest driving simultaneously
Packet is internal, can both realize beauty, the risk that traditional scissors angle clamp hand will not occur.The leg support of the utility model is linearly stretched
Contracting mechanism makes track more determining using Double-sliding rail mechanism, support upon deployment it is more stable, between control machine component between
Gap is relatively easy, so more firm in the on-state.
The leg rest driving of the utility model is using crank block, thus it is possible to vary the length of crank is reached with adapting to various chassis
It is identical to 95% part, greatly reduce the cost of product development, realize finished product modularization.
Description of the drawings
Fig. 1 is stereoscopic-state schematic diagram of the utility model 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 linear extendible mechanism of the utility model is the important component of leg support mechanism, below to leg
Support mechanism describes in detail, in the embodiment shown in Fig. 1~12, 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 (9)
1. leg support linear extendible 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；The leg rest frame includes the first frame, the second frame
Frame, the second frame is pivoted with seat frame to be coordinated, and the first drive rod both ends are cut with scissors respectively with the first slider-crank mechanism, the second frame
It connects, the first frame is slidably matched with the second frame, and attachment device, the connection are equipped between the first frame and the second frame
Device is in response to the movement of the first drive rod；When leg rest frame is unfolded, the first frame slides relative to the second frame and to extension
It stretches, when leg rest frame folds, the first frame is slided relative to the second frame and inwardly retracted.
2. leg support linear extendible mechanism according to claim 1, it is characterised in that：The first slider-crank mechanism packet
The first crank, first connecting rod and the first sliding block are included, one end of the first crank is fixedly connected with drive shaft, the both ends of first connecting rod
It is 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 with leading
It is slidably matched to bar；The attachment device include second connecting rod, the second sliding block and the second drive rod, one end of second connecting rod and
Position on first drive rod close to the first drive rod and the second frame articulation point is hinged, and the other end of second connecting rod and second is slided
Block is hinged, and second sliding block is slidably matched with the sliding rail being arranged on the second frame；Second drive rod and the second frame turn
Dynamic connection, and the second drive rod both ends respectively with the second sliding block, the first frame articulation.
3. leg support linear extendible mechanism according to claim 2, it is characterised in that：The other end of second connecting rod and second is slided
Block is hinged by the first axis pin, and the flat recess set along the second sliding block glide direction, first axis pin are equipped on sliding rail
It is plugged in flat recess.
4. leg support linear extendible mechanism according to claim 2, it is characterised in that：Second is provided in the second frame
The support plate extended in frame, drive rod are rotatablely connected with support plate by the second axis pin.
5. leg support linear extendible mechanism according to claim 2, it is characterised in that：One end of drive rod leads to the second sliding block
Third axis pin is crossed to be hinged；Either one in the block of the second cunning is connected and is slided in drive rod or second third axis pin with drive rod
In the block another is equipped with kidney slot, and the third axis pin is plugged in kidney slot.
6. leg support linear extendible mechanism according to claim 2, it is characterised in that：The other end of drive rod and the first frame
It is hinged by the 4th axis pin；4th axis pin is connected with one in drive rod or the first frame, and in drive rod or the first frame
Another in frame is equipped with kidney slot, and the 4th axis pin is plugged in kidney slot.
7. leg support linear extendible mechanism according to claim 2, it is characterised in that：The cross section of guide rod is circle.
8. leg support linear extendible mechanism according to claim 2, it is characterised in that：First sliding block includes and guiding
The nonmetallic sliding part that rod set connects, is surrounded by U-clamp plate outside the nonmetallic sliding part, first connecting rod, the first drive rod end
Portion is hinged with U-clamp plate.
9. leg support linear extendible mechanism according to claim 8, it is characterised in that：The nonmetallic sliding part is nylon
Or rubber block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720588414.XU CN207477252U (en) | 2017-05-10 | 2017-05-10 | Leg support linear extendible mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720588414.XU CN207477252U (en) | 2017-05-10 | 2017-05-10 | Leg support linear extendible mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207477252U true CN207477252U (en) | 2018-06-12 |
Family
ID=62484108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720588414.XU Expired - Fee Related CN207477252U (en) | 2017-05-10 | 2017-05-10 | Leg support linear extendible mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207477252U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113119818A (en) * | 2021-04-28 | 2021-07-16 | 上海工程技术大学 | Child safety seat for vehicle |
-
2017
- 2017-05-10 CN CN201720588414.XU patent/CN207477252U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113119818A (en) * | 2021-04-28 | 2021-07-16 | 上海工程技术大学 | Child safety seat for vehicle |
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| 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: 20180612 |