CN107962983B - Chair and leg support for chair - Google Patents
Chair and leg support for chair Download PDFInfo
- Publication number
- CN107962983B CN107962983B CN201711432954.XA CN201711432954A CN107962983B CN 107962983 B CN107962983 B CN 107962983B CN 201711432954 A CN201711432954 A CN 201711432954A CN 107962983 B CN107962983 B CN 107962983B
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- connecting rod
- leg support
- assembly
- leg
- driving
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- 230000000712 assembly Effects 0.000 claims abstract description 33
- 238000000429 assembly Methods 0.000 claims abstract description 33
- 238000005452 bending Methods 0.000 claims description 34
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 abstract description 11
- 230000003014 reinforcing effect Effects 0.000 description 12
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/02246—Electric motors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/02246—Electric motors therefor
- B60N2/02253—Electric motors therefor characterised by the transmission between the electric motor and the seat or seat parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/62—Thigh-rests
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention discloses a leg rest for a seat, which is fixedly connected with the seat through a pair of fixing brackets arranged in parallel, and comprises an outer layer leg rest assembly, an inner layer leg rest assembly, an angle adjuster assembly and a connecting rod driving assembly; the angle adjuster assembly is arranged between the pair of fixed brackets and is fixedly connected with the fixed brackets, the connecting rod driving assemblies are arranged into two groups, the power input side of each connecting rod driving assembly is connected with the angle adjuster assembly, the power output side of each connecting rod driving assembly is respectively connected with the outer layer leg support assembly and the inner layer leg support assembly, and the inner layer leg support assembly is sleeved in the outer layer leg support assembly in a sliding manner; when the angle adjuster assembly drives the connecting rod driving assembly to move, the connecting rod driving assembly drives the outer layer leg support assembly and the inner layer leg support assembly to move relatively. The left angle adjuster assembly and the right angle adjuster assembly are utilized to drive the connecting rod driving assembly to move, the connecting rod driving assembly drives the whole mechanism to ascend or descend, and simultaneously drives the outer leg support assembly to extend or retract along the inner leg support assembly, so that the supporting range of the whole leg support is changed.
Description
Technical Field
The invention relates to the field of automobile spare and accessory parts, in particular to a seat and a leg support for the seat.
Background
The chair belongs to a necessary article in life, which provides people with a seat to support the weight of the human body instead of legs, so that the legs of the people can be relaxed. According to the different use places and functions, the seat has various different structures, and the main structure of the seat is that the back of the seat is connected with a chair back at the rear end of the seat, when an occupant sits on the seat, the back of the occupant can lean against the back of the seat, and an angle adjuster is arranged between the back of the seat and the seat, so that the back of the seat can be adjusted relative to the seat to adjust the inclination angle, thereby being matched with the habits or demands of different occupants and providing better comfort.
With the development of science and technology, the requirements of comfort of the vehicle seat are increasing, especially for the luxury vehicle with high grade, the passenger seat is mostly required to be provided with an adjustable leg rest mechanism so as to provide comprehensive support for legs. In this way, the legs of the passengers are not tired due to long-time bending during long-distance travel, discomfort such as tingling or soreness can be avoided, and the passengers can sit or lie for rest in a more comfortable posture.
In order to solve the above problems, the application publication number CN103029604a discloses a seat and a leg rest adjusting device thereof, which mainly comprises an angle adjuster and a link mechanism, wherein a fixing part of the angle adjuster is used for being connected with a fixing part of the seat, a power input rod of the link mechanism is connected with a rotation output part of the angle adjuster, and a power output rod of the link mechanism is used for being connected with a leg rest to adjust the posture of the leg rest to be switched between an extended state and a retracted state.
However, the leg rest is fixed in size and cannot be adjusted, so that the support range of the leg rest device is limited, and the applicability of the leg rest device is reduced to a certain extent.
Disclosure of Invention
The invention aims to provide a leg support for a seat, which is characterized in that an inner layer leg support and an outer layer leg support are arranged, and the inner layer leg support and the outer layer leg support can generate relative movement while the leg support mechanism drives the inner layer leg support and the outer layer leg support to lift, so that the supporting range of the leg support is increased.
Another object of the present invention is to provide a seat that enables an occupant to sit or lie in a more comfortable posture by providing a leg rest for the seat on a seat body.
The first object of the invention is achieved by the following technical scheme: the leg rest for the seat is fixedly connected with the seat through a pair of fixing brackets which are arranged in parallel and comprises an outer layer leg rest assembly, an inner layer leg rest assembly, an angle adjuster assembly and a connecting rod driving assembly; the angle adjuster assembly is arranged between the pair of fixed brackets and is fixedly connected with the fixed brackets, the connecting rod driving assemblies are arranged into two groups, the power input side of each connecting rod driving assembly is connected with the angle adjuster assembly, the power output side of each connecting rod driving assembly is respectively connected with the outer layer leg support assembly and the inner layer leg support assembly, and the inner layer leg support assembly is sleeved in the outer layer leg support assembly in a sliding manner; when the angle adjuster assembly drives the connecting rod driving assembly to move, the connecting rod driving assembly drives the outer layer leg support assembly and the inner layer leg support assembly to move relatively.
Through adopting above-mentioned technical scheme, utilize controlling angle modulation ware assembly drive connecting rod drive assembly motion, when the whole mechanism of connecting rod drive assembly drive rises or descends, drive outer leg holds in the palm the assembly and stretches out or retract along inlayer leg holds in the palm the assembly to change the supporting range that whole leg held in the palm, make the use that the leg held in the palm more convenient.
Preferably, the angle adjuster assembly comprises a pair of angle adjusters, a synchronous rod connected between the two angle adjusters, and a driving motor for driving the angle adjusters to rotate; the connecting rod driving assembly is symmetrically arranged into two groups corresponding to the pair of angle adjusters, each angle adjuster comprises a fixing part fixedly connected with the middle part of the corresponding side fixing support and a rotation output part fixedly connected with the power input side of the corresponding side connecting rod driving assembly, the driving motor is arranged on the synchronizing rod, two ends of the synchronizing rod are respectively connected with the rotation output parts of the angle adjusters at two sides, and after torque output of the driving motor is transmitted to the rotation output parts of the angle adjusters through the synchronizing rod, the driving motor drives the connecting rod driving assembly to move;
each group of connecting rod driving components comprises an active rocker, a driven rocker and a connecting rod, one end of the active rocker of each group of connecting rod driving components is fixedly connected with a rotation output part of a corresponding angle adjuster, the other end of the active rocker of each group of connecting rod driving components is connected with one end of the connecting rod through a hinge shaft, and the connecting point of the connecting rod and the hinge shaft is positioned at one side, close to the active rocker, close to the symmetry center of the two groups of connecting rod driving components; the other ends of the connecting rods of each group of connecting rod driving assemblies are respectively hinged with the outer layer leg support assembly, and a pin shaft is arranged at the hinged part of the connecting rods and the outer layer leg support assembly;
the driven rocking bars are arranged between the driving rocking bars and the connecting rods, the fixed shafts are fixedly connected with the non-fixed ends of the two fixed supports, one end of each group of connecting rod driving assembly driven rocking bar is respectively and rotatably connected with two ends of the fixed shaft, and the other end of each group of connecting rod driving assembly driven rocking bar is hinged with the corresponding connecting rod;
the hinge point of the driven rocking bar and the connecting rod is positioned between the hinge point of the connecting rod and the driving rocking bar and the hinge point of the connecting rod and the outer layer leg support assembly and is close to the hinge point of the connecting rod and the driving rocking bar; and the hinge point of the driven rocking rod and the connecting rod is positioned on one side of the connecting rod away from the symmetrical center of the two groups of connecting rod driving assemblies.
Through adopting above-mentioned technical scheme, when driving motor drive angle modulation ware rotated, drive initiative rocker and rotate to the direction that is close to the connecting rod around the synchronizing lever, then initiative rocker can drive the connecting rod for when the connecting rod rotates to the direction that keeps away from initiative rocker around first pin joint, the whole upward movement of connecting rod, the driven rocker lower extreme rotates around the fixed axial direction that keeps away from initiative rocker under the drive of connecting rod, the angle between connecting rod and the driven rocker increases.
Preferably, the outer leg support assembly comprises an outer leg support plate, two sliding rails arranged on the back surface of the outer leg support plate in parallel, and an outer leg support fixing piece connected to the back surface of the outer leg support plate; the outer layer leg support fixing piece is used for fixing the sliding rails and the outer layer leg support plate, the surfaces, provided with rail grooves, of the two sliding rails are arranged oppositely, the rail grooves are arranged along the sliding direction of the inner layer leg support assembly, and the connecting rod is hinged with one end, close to the connecting rod, of the sliding rails through a pin shaft;
the inner layer leg support assembly comprises an inner layer leg support plate arranged in an assembly gap formed between the back surface of the outer layer leg support plate and the sliding rail, a sliding block arranged in the sliding rail and an inner layer leg support fixing piece connected to the back surface of the inner layer leg support plate; the slide block is connected with the connecting rod driving assembly through a linkage piece, and the inner-layer leg support fixing piece is also connected with the linkage piece.
Through adopting above-mentioned technical scheme, slider and slide rail all are connected with connecting rod drive assembly's power take off side, and when slider and slide rail produced relative movement, drive outer layer leg layer board and produce relative movement along inlayer leg layer board to make the supporting range of leg support can change.
Preferably, the linkage piece comprises two extension rods which are arranged in parallel relative to the sliding rail, a linkage shaft which is arranged at the end part of the extension rod, which is far away from the sliding block, and a linkage rod which is connected between the linkage shaft and the fixed shaft; the two ends of the linkage shaft are respectively and rotatably connected with extension rods on two sides, and the end part of the extension rod, which is far away from the fixed shaft, is fixedly connected with the side surface of the sliding block, which is far away from the sliding rail; one end of the linkage rod is fixedly connected with the linkage shaft, and the other end of the linkage rod is fixedly connected with the fixed shaft.
Through adopting above-mentioned technical scheme, when the link piece is fixed the slider relative to the fixed bolster, the slide rail still can rotate round the universal driving shaft, and the slide rail moves along the slider when receiving the effect of connecting rod.
Preferably, the edges of the driving rocker, which are close to the fixed shaft, are provided with protrusions.
Through adopting above-mentioned technical scheme, the rotatory in-process that makes the device open of initiative rocker, when protruding and fixed axle butt for the motion of device stops, and protruding accessible restriction initiative rocker's motion limits the travel that leg held in the palm device upwards moved, prevents that the slider from breaking away from the slide rail.
Preferably, the part of the connecting rod connected with the driven rocking rod protrudes towards the direction close to the symmetrical center of the two groups of connecting rod driving assemblies, and a third bending part is formed; the end part of the connecting rod, which is provided with the pin shaft, protrudes towards the direction away from the symmetrical center of the two groups of connecting rod driving assemblies, and a second bending part is formed; the end part of the driven rocking rod connected with the connecting rod protrudes towards the direction close to the symmetrical center of the two groups of connecting rod driving assemblies, and a fourth bending part is formed;
when the leg support device for the seat is in a retracted state, the driving rocker and the sliding rail are in vertical states, the sliding block is positioned at one end of the sliding rail far away from the pin shaft, and the upper end of the driven rocker is abutted with the second bending part of the connecting rod; when the leg support device for the seat is in the unfolding state, the bulge on the driving rocker is abutted with the fixed shaft, the third bending part at the lower end of the connecting rod is abutted with the fourth bending part at the lower end of the driven rocker, and the sliding block is positioned at one end of the sliding rail, which is close to the pin shaft.
By adopting the technical scheme, the upper end of the driven rocking rod is abutted with the second bending part of the connecting rod in the process of retracting the device, the angle between the connecting rod and the driven rocking rod cannot be continuously reduced, and the movement of the device is stopped; when the whole device is in an unfolding state, the third bending part at the lower end of the connecting rod is abutted with the fourth bending part at the lower end of the driven rocking rod, so that the connecting rod and the driven rocking rod are mutually clamped, the angle between the connecting rod and the driven rocking rod cannot be continuously increased, and the whole mechanism is in a self-locking state.
Preferably, the end of the driving rocker connected with the hinge shaft protrudes in a direction approaching the symmetry center of the two groups of connecting rod driving assemblies, and a first bending part is formed on the end.
By adopting the technical scheme, the first bending part increases the size of the assembly space between the driving rocker and the connecting rod, so that the mutual interference between the driving rocker and the driven rocker in the subsequent movement can be prevented.
Preferably, the side of outer leg layer board is last to be equipped with many edges perpendicularly, and the edge is including being located the positive border that the cover that keeps away from inlayer leg layer board of outer leg layer board was established the end and be located outer leg layer board both sides and with the parallel two side direction edges of slide rail, positive border and side direction border all with outer leg layer board integrated into one piece, and positive border is perpendicular with side direction border.
Through adopting above-mentioned technical scheme, after the peripheral border that sets up of outer leg layer board, make things convenient for in the fixed of outer leg support mounting and outer leg layer board, make the whole leg support device's structural stronger simultaneously.
Preferably, the end of the lateral edge far away from the positive edge is inwards bent to form a guide part; the both sides of inlayer leg layer board are equipped with inlayer leg and hold in the palm the border, and inboard border and inlayer leg layer board integrated into one piece when inlayer leg layer board slides along inlayer leg layer board, and the lateral surface on inlayer leg layer board on the inlayer leg holds in the palm the border and the guiding part friction contact of inlayer leg layer board.
By adopting the technical scheme, the guide part can play a certain guiding role on the movement of the outer layer leg supporting plate and the inner layer leg supporting plate.
The second object of the invention is achieved by the following technical scheme: a seat comprises a seat body and a leg support device arranged at the front end of the seat body, wherein the leg support device is the leg support for the seat, and a fixing support is connected with a cushion framework of the seat body through bolts.
By adopting the technical scheme, the driving motor controls the leg support device to lift upwards, and the outer layer leg support plate extends outwards along the inner layer leg support plate until the device is self-locking, so that the device is used by a person; or the control leg support device can be retracted below the seat, so that the control leg support device does not occupy a larger space in the vehicle.
In summary, the invention has the following beneficial effects:
1. the whole leg support device drives the outer layer leg support assembly to extend or retract along the inner layer leg support assembly while realizing the upward or downward movement of the leg support, so that the support range of the whole leg support is changed, the leg support is more convenient to use in an automobile, and the leg support is convenient to integrally arrange in the automobile;
2. the lifting and extending actions of the leg support device are realized simultaneously through the connecting rod driving assembly, the structural design is ingenious, and the leg support device is positioned below the seat in a retracted state, so that the occupied space is small.
Drawings
FIG. 1 is a schematic view of a leg rest apparatus in a retracted state and mounted to a seat body;
FIG. 2 is a schematic view of the leg rest in an expanded state;
FIG. 3 is a bottom view of FIG. 2;
FIG. 4 is a schematic view of the link drive assembly highlighting the leg rest apparatus in a retracted state;
FIG. 5 is a schematic view of the link drive assembly highlighting the leg rest apparatus in an extended state;
FIG. 6 is a schematic view showing the force exerted by the leg rest apparatus as it begins to move from the retracted state;
FIG. 7 is a partial schematic view showing the engagement of the protrusions on the active rocker with the stationary shaft when the leg rest apparatus is in the extended state;
FIG. 8 is an enlarged view of the portion A of FIG. 5;
FIG. 9 is a schematic view showing the leg rest apparatus in a retracted state with the passive swing lever abutting the third bend;
FIG. 10 is a schematic view highlighting an outer leg rest mount and an inner leg rest mount;
fig. 11 is a schematic view of the leg rest of fig. 1 in an expanded state.
In the figure, a first hinge point; b. a second hinge point; c. a third hinge point; 1. a seat body; 2. an outer leg rest assembly; 21. an outer layer leg support plate; 211. a positive edge; 212. lateral edges; 2121. A guide part; 22. a slide rail; 23. an outer leg rest mount; 231. a U-shaped connecting sheet; 232. a connecting strip; 2321. a bending part; 3. an inner leg support assembly; 31. an inner layer leg support plate; 312. the inner leg support edge; 32. a slide block; 4. an angle adjuster assembly; 41. an angle adjuster; 411. a fixing part; 412. a rotation output section; 42. a synchronizing lever; 43. a driving motor; 5. a link driving assembly; 51. an active rocker; 511. a first bending part; 512. a protrusion; 52. a passive rocker; 521. a fourth bending part; 53. a connecting rod; 531. a second bending part; 532. a third bending part; 533. a pin shaft; 54. a hinge shaft; 55. a fixed shaft; 6. a leg rest securing assembly; 61. a fixed bracket; 7. a linkage member; 71. an extension rod; 72. a linkage rod; 73. a linkage shaft; 74. a reinforcing shaft; 8. a reinforcing member; 81. reinforcing strips; 82. a connection part; 9. an inner leg support fixing piece; 91. a fixed rod; 92. and (5) connecting a rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper", "lower", "bottom" and "top" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
Example 1
A leg rest for a seat, as shown in fig. 1 and 2, comprises an outer leg rest assembly 2, an inner leg rest assembly 3, an angle adjuster assembly 4, a connecting rod driving assembly 5 and a leg rest fixing assembly 6. The leg rest fixing assembly 6 comprises a pair of fixing brackets 61 which are arranged in parallel, the leg rest is connected with the seat body 1 through the fixing brackets 61, one end of each fixing bracket 61 is fixed on the seat framework through a bolt and is a fixed end, and the other end of each fixing bracket 61 is a non-fixed end; the angle adjuster assembly 4 is arranged between the pair of fixed brackets 6 and fixedly connected with the fixed brackets 61, the connecting point of the angle adjuster assembly 4 and the fixed brackets 61 is positioned between the fixed ends and the non-fixed ends of the fixed brackets 61, the power input side of the connecting rod driving assembly 5 is connected with the angle adjuster assembly 4, the power output side of the connecting rod driving assembly is respectively connected with the outer leg support assembly 2 and the inner leg support assembly 3, and the outer leg support assembly 2 is in sliding connection with the inner leg support assembly 3.
The link driving assembly 5 is driven by the angle adjuster assembly 4 to move, and the outer layer leg rest assembly 2 is driven to extend or retract along the inner layer leg rest assembly 3 when the link driving assembly 5 drives the leg rest device to ascend or descend, so that the supporting range of the whole leg rest device is changed.
Referring to fig. 2, the recliner assembly 4 includes a pair of recliners 41, a synchronizing rod 42 connected between the pair of recliners 41, and a driving motor 43 for driving the rotation of the recliners 41. The angle adjuster 41 can be a disc-shaped self-locking angle adjuster for adjusting the angles of the back and the backrest of a sofa, the angle adjuster 41 mainly comprises a fixed part 411 and a rotary output part 412, the fixed part 411 of the angle adjuster 41 is used for being connected with the middle part of a fixed bracket 61 on the corresponding side so as to realize torque output through the rotary output part 412 under the action of driving force, and the rotary output part 412 of the angle adjuster 41 is used for being connected with the power input side of the connecting rod driving assembly 5; the driving motor 43 is disposed on the synchronizing rod 42, both ends of the synchronizing rod 42 are respectively connected to the rotation output parts 412 of the recliners 41 on both sides, and the torque output of the driving motor 43 is transmitted to the rotation output parts 412 of the recliners 41 through the synchronizing rod 42 to drive the link driving assembly 5 to move.
Referring to fig. 4 and 5, the link driving assemblies 5 are symmetrically arranged in two groups corresponding to the pair of the corner shifters 41, and the two groups of link driving assemblies 5 are symmetrically arranged at both ends of the synchronizing bar 42. Each group of link driving components 5 comprises an active rocker 51, a passive rocker 52 and a link 53, and the active rocker 51, the passive rocker 52, the link 53 and the fixed bracket 61 form a four-bar mechanism. The number of the driving rockers 51 is two, one end of each driving rocker 51 of each group of connecting rod driving assemblies 5 is fixedly connected with the corresponding rotation output part 412 of the angle adjuster 41, the other end of each driving rocker 51 of each group of connecting rod driving assemblies 5 is connected with one end of each connecting rod 53 through a hinge shaft 54, and the connecting point of each connecting rod 53 and the hinge shaft 54 is positioned at one side, close to the driving rocker 51, close to the symmetrical center of the two groups of connecting rod driving assemblies 5; and both ends of the hinge shaft 54 are fixedly connected with the driving rocking bars 41 respectively and are arranged parallel to the synchronizing bars 42, so that the connection of the two driving rocking bars 51 is more stable; one end of the connecting rod 53 of each group of connecting rod driving assemblies 5 is rotationally connected with the hinging shaft 54, the other end of the connecting rod 53 is hinged with the outer layer leg support assembly 2, a pin roll 533 is arranged at the hinging point of the connecting rod 53 and the outer layer leg support assembly 2, the point of the connecting rod 53 provided with the pin roll 533 is a first hinging point a, and the point of the connecting rod 53 connected with the driving rocker 51 is a third hinging point c.
Referring to fig. 4 and 5, the driven rocker 52 is disposed between the driving rocker 51 and the link 53, the fixed shafts 55 are fixedly connected to the non-fixed ends of the two fixed brackets 61, the fixed shafts 55 are disposed parallel to the hinge shafts 54, one end of the driven rocker 52 of each group of link driving assemblies 5 is respectively rotatably connected to the fixed shaft 55, the other end is hinged to the corresponding link 53, and the point at which the driven rocker 52 is hinged to the link 53 is the second hinge point b. The second hinge point b is located between the first hinge point a and the third hinge point c on the link 53, and the second hinge point b is close to the third hinge point c. The connecting rod driving assemblies 5 on two sides are connected into a whole through the arrangement of the hinge shaft 54 and the fixed shaft 55, so that the whole device is more stable.
Referring to fig. 4 and 5, the end of the driving rocker 51 connected to the hinge shaft 54 is protruded in a direction approaching the center of symmetry of the two sets of link driving assemblies 5, and a first bending portion 511 is formed; the part of the connecting rod 53 connected with the driven rocking rod 52 is protruded in a direction approaching the symmetry center of the two groups of connecting rod driving assemblies 5, a third bending part 532 is formed, and the end part of the connecting rod 53 provided with a pin 533 is protruded in a direction separating from the symmetry center of the two groups of connecting rod driving assemblies 5, and a second bending part 531 is formed; the end of the driven rocker 52 connected to the link 53 is protruded in a direction approaching the center of symmetry of the two sets of link driving assemblies 5, a fourth bent portion 521 is formed, and the lower end of the driven rocker 52 is in frictional contact with the link 53 at the second hinge point b.
The first and third bending parts 511 and 532 increase the assembly space between the driving rocker 51 and the link 53 while the driving rocker 51 and the link 53 are in frictional contact at the hinge shaft 54, and prevent interference between the driving rocker 51 and the driven rocker 52 during the subsequent movement.
Referring to fig. 2 and 3, the outer leg rest assembly 2 includes an outer leg rest 21, two slide rails 22 parallel to the back of the outer leg rest 21, and an outer leg rest fixing member 23 connected to the back of the outer leg rest 21. The surfaces of the slide rails 22 provided with rail grooves are oppositely arranged, the rail grooves are arranged along the sliding direction of the inner leg support assembly 3, and an assembly gap is formed between the slide rails 22 and the back surface of the outer leg support plate 21 and is used for installing the inner leg support assembly 3; one end of the slide rail 22, which is close to the link 53, is hinged to the link 53 by a pin 533.
Referring to fig. 2 and 3, the inner leg rest assembly 3 includes an inner leg rest 31 provided in an assembly gap formed between the outer leg rest 21 and the slide rail 22, a slider 32 provided in the slide rail 22, and an inner leg rest fixing member 9 connected to the back surface of the inner leg rest 31. The width of the inner leg support plate 31 is smaller than that of the outer leg support plate 21, and the slider 32 is connected with the link driving assembly 5 through the link 7.
Referring to fig. 4 and 5, the link 7 includes two extension rods 71 disposed in parallel with respect to the slide rail 22, a link shaft 73 provided at an end of the extension rod 71 remote from the slider 32, and a link rod 72 connected between the link shaft 73 and the fixed shaft 55. The two ends of the linkage shaft 73 are respectively and rotatably connected with the extension rods 71 at the two sides, and the end part of the extension rod 71, which is far away from the fixed shaft 55, is fixedly connected with the side surface of the sliding block 32, which is far away from the sliding rail 22; one end of the link lever 72 is fixedly connected with the link shaft 73, and the other end is fixedly connected with the fixed shaft 55, so that the fixed shaft 55 and the link shaft 73 form a single body. And the reinforcing shafts 74 are fixedly connected between the extension rods 71 at the two sides, the reinforcing shafts 74 are positioned at the positions of the extension rods 71 close to the sliding blocks 32, and the structural strength between the extension rods 71 at the two sides is reinforced by the reinforcing shafts 74.
Since the fixed shaft 55 is fixedly connected with the fixed bracket 61, the link rod 72 is fixedly connected with the fixed shaft 55 and the link shaft 73, and thus the link rod 72 forms a fixed body with the fixed bracket 61 through the fixed shaft 55, the extension rod 71 and the slide block 32 only rotate around the link shaft 73 relative to the body, and do not move relative to the fixed bracket 61.
Referring to fig. 4, when the device is in the retracted state, the slider 32 is located at one end of the sliding rail 22 far away from the pin 533, both the driving rocker 51 and the sliding rail 22 are in the vertical state, and since the height of the second hinge point b on the connecting rod 53 is higher than that of the third hinge point c on the connecting rod 53, the lower end of the connecting rod 53 is simultaneously subjected to upward tensile forces (f 1, f 2) of the driving rocker 51 and the driven rocker 52 (refer to fig. 6), so that the connecting rod 53 is in the fixed state, and the upper end of the connecting rod 53 cannot rotate even if being influenced by the dead weight of the sliding rail 22, so that the leg rest can be self-locked in the retracted state.
Referring to fig. 1 and 4, when the driving motor 43 drives the recliner 41 to rotate, the driving rocker 51 is driven to rotate around the synchronizing rod 42 in a direction away from the seat body 1, the driving rocker 51 generates thrust in a direction F1 at the lower end of the connecting rod 53 (refer to fig. 6) under the driving of the hinge shaft 54, the connecting rod 53 is driven to rotate around the pin 533 in a direction away from the seat body 1, meanwhile, the connecting rod 53 moves integrally upwards, the lower end of the driven rocker 52 is driven by the connecting rod 53 to rotate around the fixed shaft 55 in a direction away from the driving rocker 51, and the angle between the connecting rod 53 and the driven rocker 52 increases. Referring to fig. 5, the upward moving link 53 generates an F-direction driving force (refer to fig. 6) on the slide rail 22 at the pin 533, the slide block 32 is fixed relative to the fixed bracket 61, and the F-direction driving force drives the slide rail 22 to move downward along the slide block 32, and at the same time, the passive rocker 52 generates a pulling force at the lower end of the link 53, so that the slide rail 22 also rotates around the pin 533 in a direction away from the seat body 1, thereby driving the slide block 32 to rotate around the linkage shaft 73 in a direction away from the active rocker 51; the link 53 drives the entire leg rest assembly up and simultaneously the outer leg rest 21 extends along the inner leg rest 31 so that the entire assembly is in the deployed condition.
Referring to fig. 7, a protrusion 512 is provided on a ridge of the driving rocker 51 near the fixed shaft 55, and when the driving rocker 51 rotates to enable the device to be opened, the protrusion 512 abuts against the fixed shaft 55, so that the movement of the device is stopped, the driving rocker 51 cannot continue to rotate, and at this time, the slider 32 is located at one end of the slide rail 22 where the pin 533 is provided. The protrusions 512 limit the upward travel of the leg rest assembly by limiting the movement of the active rocker 51, preventing the slider 32 from disengaging the slide 22, resulting in structural failure of the assembly.
Referring to fig. 8, when the whole device is in the unfolded state, the third bending portion 532 at the lower end of the connecting rod 53 abuts against the fourth bending portion 521 at the lower end of the passive rocking rod 52, so that the connecting rod 53 and the passive rocking rod 52 are blocked mutually, and the angle between the connecting rod 53 and the passive rocking rod 52 cannot be increased continuously, so that the whole mechanism is in the self-locking state. Even if the outer leg support plate 21 is subjected to downward pressure, the locking state of the mechanism is not destroyed, and the locking between the connecting rod 53 and the passive rocking rod 52 is only more compact, so that the whole device is more stable. Referring back to fig. 1 and 5, until the driving motor 43 drives the recliner 41 to rotate reversely again, the driving rocker 51 is driven to rotate around the synchronizing rod 42 in a direction approaching the seat body 1, the connecting rod 53 rotates around the pin 533 in a direction approaching the seat body 1, and simultaneously the connecting rod 53 moves downwards, the clamping between the connecting rod 53 and the driven rocker 52 is released, and the angle between the connecting rod 53 and the driven rocker 52 is reduced; the slide rail 22 rotates around the pin 533 in a direction approaching the seat body 1 and moves along the slide block 32 in a direction approaching the seat body 1, so that the slide block 32 is driven to rotate around the linkage shaft 73 in a direction approaching the driving rocker 51; the link 53 drives the entire leg rest assembly to retract downwardly while the outer leg rest 21 is retracted along the inner leg rest 31 so that the entire assembly is in the retracted state. Referring to fig. 9, at this time, the upper end of the passive rocker 52 abuts against the second bent portion 531 of the link 53, and the angle between the link 53 and the passive rocker 52 cannot be reduced continuously, and the movement of the device is stopped.
As a preferred embodiment, referring back to fig. 3, the outer leg support plate 21 is rectangular, the side edge of the outer leg support plate 21 is vertically provided with a plurality of edges, the edges are three and are connected with each other, the outer leg support plate comprises a forward edge 211 located on the side edge, far away from the inner leg support plate 31, of the outer leg support plate 21, and two lateral edges 212 located on two sides of the outer leg support plate 21 and parallel to the sliding rail 22, the forward edge 211 is vertical to the lateral edges 212, and a certain distance is formed between the lateral edges 212 and the back surface of the sliding rail 22. And the end of the lateral edge 212 remote from the forward edge 211 is bent inwardly to form a guide 2121.
Referring to fig. 3 and 10, the outer leg rest fixing member 23 is provided on a side of the outer leg rest 21 away from the inner leg rest 31, and includes a U-shaped connecting piece 231 provided between the rear surface of the slide rail 22 and the lateral edge 212, and a connecting bar 232 provided in an assembly gap between the outer leg rest 21 and the slide rail 22. The U-shaped opening of the U-shaped connecting piece 231 is arranged towards the slide rail 22 and is fixedly connected with the back of the slide rail 22 through bolt fixing; the connecting strip 232 is vertically arranged relative to the slide rail 22, is integrally welded on the inner side surface of the outer layer leg supporting plate 21, and a certain distance exists between the connecting strip 232 and the slide rail 22, so that a space allowing the inner layer leg supporting plate 31 to slide is formed; and the two ends of the connecting strip 232 are bent inwards to form a bending part 2321, the bending part 2321 is located between the U-shaped connecting piece 231 and the lateral edge 212, and two side surfaces of the bending part 2321 are welded with the inner side surfaces of the U-shaped connecting piece and the lateral edge 212 respectively, so that the outer layer leg supporting plate 21 and the sliding rail 22 are fixed.
Referring to fig. 3 and 10, a reinforcing member 8 is further disposed between the outer leg support plate 21 and the slide rail 22, and the reinforcing member 8 is disposed on one side of the outer leg support plate 21 near the inner leg support plate 31 and parallel to the connection bar 232. The stiffener 8 comprises a stiffener 81 located in the assembly gap between the outer leg blade 21 and the slide rail 22, and a connection 82 located between the lateral edge 212 and the back of the slide rail 22; the connecting portion 82 is integrally formed at two ends of the reinforcing strip 81, one end of the connecting portion 82 is fixedly connected with the back surface of the slide rail 22 through a bolt, the other end of the connecting portion 82 is welded with the inner side surface of the lateral edge 212, and the reinforcing strip 81 is welded with the inner side surface of the outer leg supporting plate 21.
The outer leg support plates 21 are supported by the reinforcing pieces 8 and the outer leg support fixing pieces 23 at the two ends of the outer leg support plates 21 respectively, so that the structure of the outer leg support plates 21 is more stable, and when the legs of a person are placed on the outer leg support plates 21, the outer leg support plates 21 cannot be deformed due to the fact that the legs are subjected to too strong pressure; and by the arrangement of the reinforcing member 8 and the outer leg support fixing member 23, a sufficient space is provided between the outer leg support plate 21 and the slide rail 22 to install the inner leg support plate 31.
Referring to fig. 3, inner leg rest edges 312 are provided on both sides of the inner leg rest 31, and when the outer leg rest 21 slides along the inner leg rest 31, the outer side surface of the inner leg rest edge 312 on the inner leg rest 31 is in frictional contact with the guide portion 2121 of the outer leg rest 21, and the guide portion 2121 plays a certain role in guiding the movement of both.
Referring to fig. 3 and 10, the inner leg rest 31 is fixedly connected to the extension rod 71 by an inner leg rest fixing member 9, and the inner leg rest fixing member 9 includes a fixing rod 91 disposed between the extension rod 71 and the inner leg rest 31, and a connecting rod 92 formed by bending both ends of the fixing rod 91. The fixing rod 91 is vertically disposed with respect to the extension rod 71 and welded to the inner side surface of the inner leg rest 31, and the connecting rod 92 is welded to the side surface of the extension rod 71 near the lateral edge 212 to fixedly connect the extension rod 71 with the inner leg rest 31.
The number of the inner-layer leg support fixing pieces 9 is two, and the two ends of the inner-layer leg support plate 31 are symmetrically arranged, so that the inner-layer leg support plate 31 is more stable in structure after being supported; and through the setting of inlayer leg holds in palm mounting 9, can compensate the distance between inlayer leg layer board 31 medial surface and the side of slide rail 22, prevent to produce the friction between medial surface and the side of slide rail 22 of inlayer leg layer board 31.
Example 2
Referring to fig. 11, a seat includes a seat body 1 and a leg rest device provided at the front end of the seat body 1, wherein the leg rest device is the leg rest for the seat in embodiment 1, and a fixing bracket 61 is connected to a seat cushion frame of the seat body 1 by bolts.
When the driving motor 43 controls the angle adjuster 41 to drive the driving rocker 51 to rotate in a direction away from the seat body 1, the outer layer leg supporting plate 21 extends outwards along the inner layer leg supporting plate 31 while the leg supporting device is lifted upwards until the device is self-locking for use by a person; when the leg rest device is not needed, the driving motor 43 controls the angle adjuster 41 to drive the driving rocker 51 to rotate in the direction approaching the seat body 1, the leg rest device is retracted downwards, meanwhile, the outer-layer leg support plate 21 is retracted inwards along the inner-layer leg support plate 31 until the whole device is self-locked, and at the moment, the leg rest device can be retracted below the seat, and does not occupy a larger space in a vehicle.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (9)
1. The utility model provides a leg holds in palm for seat, its fixed connection with seat through a pair of parallel arrangement's fixed bolster (61), its characterized in that: comprises an outer layer leg support assembly (2), an inner layer leg support assembly (3), an angle adjuster assembly (4) and a connecting rod driving assembly (5); the angle adjuster assembly (4) is arranged between the pair of fixed brackets (61) and is fixedly connected with the fixed brackets (61), the power input side of the connecting rod driving assembly (5) is connected with the angle adjuster assembly (4), the power output side of the connecting rod driving assembly is respectively connected with the outer-layer leg support assembly (2) and the inner-layer leg support assembly (3), and the inner-layer leg support assembly (3) is sleeved in the outer-layer leg support assembly (2) in a sliding manner; when the angle adjuster assembly (4) drives the connecting rod driving assembly (5) to move, the connecting rod driving assembly (5) drives the outer layer leg support assembly (2) and the inner layer leg support assembly (3) to move relatively;
the angle adjuster assembly (4) comprises a pair of angle adjusters (41), a synchronous rod (42) connected between the two angle adjusters (41), and a driving motor (43) for driving the angle adjusters (41) to rotate; the connecting rod driving assemblies (5) are symmetrically arranged into two groups corresponding to the pair of angle adjusters (41), the two groups of connecting rod driving assemblies (5) are symmetrically arranged at two ends of the synchronous rod (42), each angle adjuster (41) comprises a fixing part (411) fixedly connected with the middle part of the corresponding side fixing support (61) and a rotating output part (412) fixedly connected with the power input side of the corresponding side connecting rod driving assembly (5), the driving motor (43) is arranged on the synchronous rod (42), the two ends of the synchronous rod (42) are respectively connected with the rotating output parts (412) of the angle adjusters (41) at two sides, and after torque output of the driving motor (43) is transmitted to the rotating output parts (412) of the angle adjusters (41) through the synchronous rod (42), the driving connecting rod driving assemblies (5) are driven to move;
each group of connecting rod driving assemblies (5) comprises a driving rocker (51), a driven rocker (52) and a connecting rod (53), one end of the driving rocker (51) of each group of connecting rod driving assemblies (5) is fixedly connected with a rotation output part (412) of a corresponding angle adjuster (41) respectively, the other end of the driving rocker (51) of each group of connecting rod driving assemblies (5) is connected with one end of the connecting rod (53) through a hinge shaft (54), and the connecting point of the connecting rod (53) and the hinge shaft (54) is positioned at one side, close to the symmetry center of the two groups of connecting rod driving assemblies (5), of the driving rocker (51); the other ends of the connecting rods (53) of each group of connecting rod driving assemblies (5) are respectively hinged with the outer layer leg support assembly (2), and a hinge pin (533) is arranged at the hinge position of each connecting rod (53) and the outer layer leg support assembly (2);
the driven rocking bars (52) are arranged between the driving rocking bars (51) and the connecting rods (53), the fixed shafts (55) are fixedly connected with the non-fixed ends of the two fixed brackets (61), one end of each driven rocking bar (52) of each group of connecting rod driving components (5) is respectively and rotatably connected with two ends of the fixed shaft (55), and the other end of each driven rocking bar is hinged with the corresponding connecting rod (53);
the hinge point of the driven rocking rod (52) and the connecting rod (53) is positioned between the hinge point of the connecting rod (53) and the driving rocking rod (51) and the hinge point of the connecting rod (53) and the outer layer leg support assembly (2) and is close to the hinge point of the connecting rod (53) and the driving rocking rod (51); and the hinge point of the driven rocking rod (52) and the connecting rod (53) is positioned on one side of the connecting rod (53) away from the symmetrical center of the two groups of connecting rod driving assemblies (5).
2. A leg rest for a seat according to claim 1, wherein: the outer leg support assembly (2) comprises an outer leg support plate (21), two sliding rails (22) arranged on the back surface of the outer leg support plate (21) in parallel, and an outer leg support fixing piece (23) connected to the back surface of the outer leg support plate (21); the outer layer leg support fixing piece (23) is used for fixing the sliding rails (22) and the outer layer leg support plate (21), the surfaces, provided with rail grooves, of the two sliding rails (22) are arranged oppositely, the rail grooves are arranged along the sliding direction of the inner layer leg support assembly (3), and the connecting rod (53) is hinged with one end, close to the connecting rod (53), of the sliding rail (22) through the pin roll (533);
the inner layer leg support assembly (3) comprises an inner layer leg support plate (31) arranged in an assembly gap formed between the back surface of the outer layer leg support plate (21) and the sliding rail (22), a sliding block (32) arranged in the sliding rail (22) and an inner layer leg support fixing piece (9) connected to the back surface of the inner layer leg support plate (31); the sliding block (32) is connected with the connecting rod driving assembly (5) through a linkage piece (7), and the inner-layer leg support fixing piece (9) is also connected with the linkage piece (7).
3. A leg rest for a seat according to claim 2, wherein: the linkage piece (7) comprises two extension rods (71) which are arranged in parallel relative to the sliding rail (22), a linkage shaft (73) which is arranged at the end part of the extension rod (71) far away from the sliding block (32), and a linkage rod (72) which is connected between the linkage shaft (73) and the fixed shaft (55); the two ends of the linkage shaft (73) are respectively and rotatably connected with the extension rods (71) at the two sides, and the end part of the extension rod (71) far away from the fixed shaft (55) is fixedly connected with the side surface of the sliding block (32) far away from the sliding rail (22); one end of the linkage rod (72) is fixedly connected with the linkage shaft (73), and the other end is fixedly connected with the fixed shaft (55).
4. A leg rest for a seat according to claim 3, wherein: the edges of the driving rocker (51) close to the fixed shaft (55) are provided with bulges (512).
5. A leg rest for a seat as claimed in claim 4, wherein: the part of the connecting rod (53) connected with the driven rocking rod (52) protrudes towards the direction close to the symmetrical center of the two groups of connecting rod driving assemblies (5), and a third bending part (532) is formed; the end part of the connecting rod (53) provided with the pin shaft (533) protrudes in a direction away from the symmetry center of the two groups of connecting rod driving assemblies (5), and a second bending part (531) is formed; the end part of the driven rocking rod (52) connected with the connecting rod (53) protrudes towards the direction approaching the symmetry center of the two groups of connecting rod driving assemblies (5), and a fourth bending part (521) is formed;
when the leg support device for the seat is in a retracted state, the driving rocker (51) and the sliding rail (22) are in a vertical state, the sliding block (32) is positioned at one end of the sliding rail (22) far away from the pin shaft (533), and the upper end of the driven rocker (52) is abutted against the second bending part (531) of the connecting rod (53); when the leg support device for the seat is in a unfolding state, a protrusion (512) on the driving rocker (51) is in contact with the fixed shaft (55), a third bending part (532) at the lower end of the connecting rod (53) is in contact with a fourth bending part (521) at the lower end of the driven rocker (52), and the sliding block (32) is positioned at one end, close to the pin roll (533), of the sliding rail (22).
6. A leg rest for a seat as set forth in claim 5, wherein: the end part of the driving rocker (51) connected with the hinge shaft (54) protrudes towards the direction close to the symmetrical center of the two groups of connecting rod driving assemblies (5), and a first bending part (511) is formed.
7. A leg rest for a seat as claimed in claim 6, wherein: the side of outer leg layer board (21) is last to be equipped with many edges perpendicularly, and the edge is including being located the cover that keeps away from inlayer leg layer board (31) of outer leg layer board (21) establish forward border (211) and be located outer leg layer board (21) both sides and with slide rail (22) two parallel side direction border (212), forward border (211) and side direction border (212) all with outer leg layer board (21) integrated into one piece, and forward border (211) are perpendicular with side direction border (212).
8. A leg rest for a seat according to claim 7, wherein: the end part of the lateral edge (212) far away from the positive edge (211) is inwards bent to form a guide part (2121); the both sides of inlayer leg layer board (31) are equipped with inlayer leg support border (312), inlayer leg support border (312) and inlayer leg layer board (31) integrated into one piece, and when inlayer leg layer board (21) are along inlayer leg layer board (31) slip, the lateral surface on inlayer leg layer board (31) on inlayer leg support border (312) and the guide part (2121) of inlayer leg layer board (21) friction contact.
9. The utility model provides a seat, includes seat body (1) and locates the leg support device of seat body (1) front end, its characterized in that: the leg rest device is a leg rest for a seat according to claim 1, wherein the fixing bracket (61) is connected to the seat cushion frame of the seat body (1) by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711432954.XA CN107962983B (en) | 2017-12-26 | 2017-12-26 | Chair and leg support for chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711432954.XA CN107962983B (en) | 2017-12-26 | 2017-12-26 | Chair and leg support for chair |
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| Publication Number | Publication Date |
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| CN107962983A CN107962983A (en) | 2018-04-27 |
| CN107962983B true CN107962983B (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711432954.XA Active CN107962983B (en) | 2017-12-26 | 2017-12-26 | Chair and leg support for chair |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108578165B (en) * | 2018-05-18 | 2023-12-19 | 艾力斯特健康科技有限公司 | Massage chair with long massage stroke |
| 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 |
| CN110626242A (en) * | 2019-10-31 | 2019-12-31 | 湖北航嘉麦格纳座椅系统有限公司 | Seat and leg support mechanism thereof |
| CN111660902A (en) * | 2020-07-13 | 2020-09-15 | 江苏忠明祥和精工股份有限公司 | Leg support adjusting structure of automobile seat |
| CN112590630A (en) * | 2020-12-29 | 2021-04-02 | 上海国琻汽车科技有限公司 | Link assembly, rotary sliding-out component, leg support device and automobile seat |
| CN113665452A (en) * | 2021-09-09 | 2021-11-19 | 浙江雅虎汽车部件股份有限公司 | Independent safety belt seat frame |
| CN113815508B (en) * | 2021-10-18 | 2023-09-12 | 阿尔特汽车技术股份有限公司 | Unmanned-based control device convenient to work |
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| CN107962983A (en) | 2018-04-27 |
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