CN110626242A - Seat and leg support mechanism thereof - Google Patents
Seat and leg support mechanism thereof Download PDFInfo
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- CN110626242A CN110626242A CN201911054418.XA CN201911054418A CN110626242A CN 110626242 A CN110626242 A CN 110626242A CN 201911054418 A CN201911054418 A CN 201911054418A CN 110626242 A CN110626242 A CN 110626242A
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- assembly
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- leg rest
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- 230000007246 mechanism Effects 0.000 title claims abstract description 50
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000010168 coupling process Methods 0.000 claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 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
- B60N2/90—Details or parts not otherwise provided for
- B60N2/995—Lower-leg-rests, e.g. calf-rests
Abstract
A seat and leg rest mechanism thereof, wherein, the leg rest mechanism comprises: the driving assembly is arranged on the fixed bracket; the leg support assembly comprises a first leg support component and a second leg support component, wherein the first leg support component is provided with a hole-shaped or groove-shaped sliding matching part, the second leg support component is connected with the first leg support component in a sliding mode along the extending direction of the sliding matching part, and the upper end part of the first leg support component forms a first hinge point; the coupling beam assembly comprises a power input part and a power output part, the power input part is connected with a driving part of the driving assembly, the power output part is connected with the second leg support component, and when the driving assembly is started, the power output part can drive the first leg support component to rotate relative to the first hinge point so that the leg support assembly is switched between a retracted state and an extended state; and, in the extended state, the second leg rest assembly extends relative to the first leg rest assembly, and in the retracted state, the second leg rest assembly retracts relative to the first leg rest assembly.
Description
Technical Field
The invention relates to the technical field of vehicle seats, in particular to a seat and a leg support mechanism thereof.
Background
With the development of the society and the improvement of the living standard of people, people put forward higher requirements on the comfort of the automobile seat, at present, part of automobile types require that the seat is provided with an adjustable leg support mechanism for supporting the shanks of passengers, so that the fatigue and the discomfort of the passengers caused by the long-time bending of the legs are reduced, and the comfort is further enhanced.
However, due to the limitation of installation space, the design of the supporting surface of the existing leg rest mechanism is often small, and the leg of the passenger cannot be supported well.
Therefore, how to provide a solution to overcome the above-mentioned drawbacks remains a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a seat and a leg support mechanism thereof, wherein a leg support assembly of the leg support mechanism comprises a first leg support component and a second leg support component which can slide relatively, the second leg support component can also extend relative to the first leg support component in an extending state, a supporting surface can be increased, the second leg support component can also retract relative to the first leg support component in a retracting state, and the problems of increased occupied space and incapability of installation caused by the arrangement of the two leg support components can be avoided.
In order to solve the above technical problem, the present invention provides a leg rest mechanism of a seat, including: the driving assembly is arranged on the fixed bracket; the leg support assembly comprises a first leg support component and a second leg support component, wherein the first leg support component is provided with a hole-shaped or groove-shaped sliding matching part, the second leg support component is connected with the first leg support component in a sliding mode along the extending direction of the sliding matching part, and the upper end of the first leg support component forms a first hinge point; the coupling beam assembly comprises a power input part and a power output part, the power input part is connected with a driving part of the driving assembly, the power output part is connected with the second leg support component, and when the driving assembly is started, the power output part can drive the first leg support component to rotate relative to the first hinge point so as to switch the leg support assembly between a retracted state and an extended state; in the extended state, the second leg rest assembly extends relative to the first leg rest assembly, and in the retracted state, the second leg rest assembly retracts relative to the first leg rest assembly.
Adopt above-mentioned structure, drive assembly when starting, even the roof beam assembly can drive first leg and hold in the palm the relative first pin joint of subassembly and rotate for the leg holds in the palm the assembly and can switch between the state of packing up and stretching out, can realize that conventional leg holds in the palm the mechanism and supports passenger's shank when stretching out and the function in space-saving when packing up.
More importantly, the leg support assembly of the leg support mechanism provided by the invention comprises the first leg support component and the second leg support component which are in sliding connection, and the second leg support component can also extend relative to the first leg support component when the whole leg support assembly is in an extending state, so that the supportable length of the leg support mechanism can be greatly prolonged, the size of a supporting surface can be further increased, the legs of passengers can be supported more comfortably, and the second leg support component can also retract relative to the first leg support component when in a retracting state, so that the problems of increased occupied space and incapability of installation caused by the arrangement of the two leg support components can be solved.
Optionally, even the roof beam assembly includes drive beam subassembly and transmission roof beam subassembly, the transmission roof beam subassembly includes power take off portion, the drive beam subassembly includes the live-rollers beam, the live-rollers beam is installed in support piece to support piece rotates relatively, the outer wall of live-rollers beam install with the live-rollers beam is power input roof beam, the tie-beam of contained angle setting, the power input roof beam does power input portion, the tie-beam with the transmission roof beam subassembly is articulated.
Optionally, the transmission beam assembly includes a connection beam and a power output beam, the power output beam is the power output portion, one end portion of the connection beam is hinged to the connection beam, the power output beam forms a second hinge point with the connection beam, forms a third hinge point with the other end portion of the connection beam, forms a fourth hinge point with the second leg support assembly, and the third hinge point is located between the second hinge point and the fourth hinge point.
Optionally, the fixed bolster is located the below of the cushion of seat, including along the first supporting beam of horizontal setting, first supporting beam fixed mounting, its outer wall are equipped with a second supporting beam, a second supporting beam is kept away from the tip of first supporting beam is equipped with a third supporting beam, a third supporting beam does support piece, the live-rollers overcoat install in a third supporting beam, drive assembly install in first supporting beam.
Optionally, a beam section of the first support beam, on which the drive assembly is mounted, is recessed downward, and a mounting bracket is arranged at the recessed position; the driving assembly comprises a driving support and a driving piece hinged with the driving support, the driving support is fixed on the mounting support, the driving piece is a lead screw motor, the driving part is a lead screw, and the driving piece can drive the lead screw to move along the axial direction of the lead screw.
Optionally, the support structure further comprises a limiting structure for limiting a rotation angle of the rotating beam relative to the third support beam; the limiting structure is arranged between the rotating beam and the third supporting beam, or the limiting structure is the effective stroke of the screw rod.
Optionally, a bushing is disposed between the rotating beam and the third support beam, and the third support beam is provided with a hinge portion, and the first leg rest assembly and the hinge portion form the first hinge point.
Optionally, the number of the bushings is two, the two bushings are respectively inserted into two axial end portions of the rotating beam, the outer end of the bushing is provided with a folding portion, and in an assembling state, two axial ends of the folding portion respectively abut against the corresponding end portions of the hinge portion and the rotating beam.
Optionally, one end of the hanging beam is also hinged to the hinge part; still include transition connector, transition connector locates even hang the roof beam with between the power output roof beam, perhaps, transition connector locates the tie-beam with between the power output roof beam.
Optionally, the first leg support assembly includes a first leg support, the second leg support assembly includes a second leg support, the sliding fit portion is a sliding hole formed in the first leg support, and the second leg support is slidably connected to the sliding hole.
Optionally, the sliding device further comprises a shaft sleeve, the shaft sleeve comprises a pad part and an insertion part, the insertion part is inserted into the sliding hole, and the pad part is located between the first leg support and the second leg support; the connecting piece penetrates through the shaft sleeve to connect the first leg support and the second leg support.
Optionally, the number of the first leg supports and the number of the second leg supports are two, and each of the second leg supports is in one-to-one correspondence with each of the first leg supports in a sliding connection; the second leg support assembly further comprises a supporting plate, and the supporting plate is connected with the two second leg supports.
The invention also provides a seat, which comprises a seat frame, wherein the seat frame comprises a seat body part and a seat back part, the seat body part is also provided with a leg support mechanism, and the leg support mechanism is the leg support mechanism of the seat.
Since the leg rest mechanism of the seat has the above technical effects, the seat having the leg rest mechanism also has similar technical effects, and therefore, the detailed description thereof is omitted here.
Drawings
FIG. 1 is a schematic structural view of one embodiment of a leg rest mechanism of a chair according to the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic structural view of a drive beam assembly;
FIG. 4 is a schematic structural view of a drive beam assembly;
FIG. 5 is a view showing a connection structure of a first support beam and a second support beam in the fixing bracket;
FIG. 6 is a view of the relative positions of the third support beam and the hinge and bushing of the stationary bracket;
FIG. 7 is a partial cross-sectional view of the connection of the third support beam with the hinge, bushing and turn beam in the assembled condition;
FIG. 8 is a schematic structural view of a drive assembly;
FIG. 9 is a schematic structural view of a leg rest assembly;
FIG. 10 is a cross-sectional view of the junction of the first leg rest assembly and the second leg rest assembly;
FIG. 11 is a view showing a connection structure of the leg rest mechanism and the seat frame in a retracted state;
fig. 12 is a connection structure diagram of the leg rest mechanism and the seat frame in the extended state.
The reference numerals in fig. 1-12 are illustrated as follows:
1, a driving assembly, 11 driving brackets, 12 driving parts and 121 driving parts;
2, a leg support assembly, 21 a first leg support component, 211a first leg support, 211a sliding hole, 22 a second leg support component, 221 a second leg support, 222 supporting plate, 23 shaft sleeve, 231 pad part, 232 inserting part and 24 connecting piece;
3 connecting beam assembly, 31 driving beam assembly, 311 rotating beam, 312 power input beam, 313 connecting beam, 32 transmission beam assembly, 321 connecting beam, 322 power output beam and 323 transition connector;
4 fixed bracket, 41 first support beam, 411 mounting bracket, 42 second support beam, 43 third support beam, 431 bushing, 432 hinge;
5 seat frame, 51 seat body, 52 seat back;
a first hinge shaft A1, a second hinge shaft A2, a third hinge shaft A3 and a fourth hinge shaft A4.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The terms "first", "second", and the like, as used herein are used for convenience only to describe two or more structures or components that are the same or similar in structure, and do not denote any particular limitation on the order.
The beam may be a tubular structure, a rod structure, a plate, a profile, or the like, and may be specifically selected according to differences in use positions, functions, and the like.
Referring to fig. 1-12, fig. 1 is a schematic structural view of an embodiment of a leg rest mechanism of a seat provided by the present invention, fig. 2 is an exploded view of fig. 1, fig. 3 is a schematic structural view of a driving beam assembly, fig. 4 is a schematic structural view of a driving beam assembly, fig. 5 is a structural view of a connection between a first supporting beam and a second supporting beam in a fixed bracket, fig. 6 is a relative position view of a third supporting beam and a hinge portion and a bushing in the fixed bracket, fig. 7 is a partial sectional view of a connection between the third supporting beam and the hinge portion, the bushing and a rotating beam in an assembled state, fig. 8 is a structural view of the driving assembly, fig. 9 is a structural view of the leg rest assembly, fig. 10 is a sectional view of a connection between the first leg rest assembly and the second leg rest assembly, fig. 11 is a structural view of a connection between the leg rest mechanism and a seat frame in a retracted state, fig. 12 is a structural view of, The structure of the connection structure of the leg support mechanism and the seat frame.
As shown in fig. 1 and 2, the present invention provides a leg rest mechanism for a seat, including: the driving assembly 1 is arranged on the fixed bracket 4; the leg support assembly 2 comprises a first leg support component 21 and a second leg support component 22, wherein the first leg support component is provided with a hole-shaped or groove-shaped sliding fit part, the second leg support component is connected with the first leg support component in a sliding way along the extending direction of the sliding fit part, and the upper end part of the first leg support component 21 forms a first hinge point; the coupling beam assembly 3 comprises a power input part and a power output part, the power input part is connected with the driving part 121 of the driving assembly 1, the power output part is connected with the second leg support component 22, and when the driving assembly 1 is started, the power output part can drive the first leg support component 21 to rotate relative to the first hinge point, so that the leg support assembly 2 is switched between a retracted state and an extended state; further, in the extended state, the second leg rest assembly 22 is extended relative to the first leg rest assembly 21, and in the retracted state, the second leg rest assembly 22 is retracted relative to the first leg rest assembly 21.
Adopt above-mentioned structure, drive assembly 1 is when starting, and even roof beam assembly 3 can drive first leg and hold in the palm subassembly 21 and rotate first pin joint relatively for leg holds in the palm assembly 2 and can switch between the state of packing up and stretching out, can realize that conventional leg holds in the palm the mechanism and supports passenger's shank when stretching out and save space's function when packing up.
More importantly, the leg rest assembly 2 of the leg rest mechanism provided by the invention comprises the first leg rest component 21 and the second leg rest component 22 which are connected in a sliding manner, and the second leg rest component 22 can also extend relative to the first leg rest component 21 when the whole leg rest assembly 2 is in an extending state, so that the supportable length of the leg rest mechanism 2 can be greatly prolonged, the size of a supporting surface can be further increased, the legs of passengers can be supported more comfortably, and the second leg rest component 22 can also retract relative to the first leg rest component 21 when in a retracting state, so that the problems of increased occupied space and incapability of installation caused by the arrangement of the two leg rest components can be solved.
It should be noted that the embodiment of the present invention does not limit the specific value of the angle between the leg rest assembly 2 and the vertical plane in the extended state and the retracted state, and refer to fig. 11 and 12: in the extended state, the included angle between the leg rest assembly 2 and the vertical surface can be 45-70 degrees, of course, other values can be also adopted, and the included angle can be obtained by combining certain simulation tests and the like as long as the comfort of passengers can be improved; and under the state of packing up, the leg holds in the palm the contained angle between assembly 2 and the vertical face can be negative angle (set for under the state of stretching out the leg and hold in the palm the angle between assembly 2 and the vertical face and be positive), perhaps, the leg holds in the palm assembly 2 also can be vertical state, and again perhaps, the leg holds in the palm and also can demonstrate less positive angle between assembly 2 and the vertical face, as long as do not influence the space in seat the place ahead can.
In addition, in the embodiment of the invention, the extending state of the leg support assembly 2 can also comprise a plurality of states, and different included angles can be formed between the leg support assembly 2 and the vertical surface in different states so as to better meet the use requirements of passengers; or, the included angle between the leg support assembly 2 and the vertical surface in the extending state can be continuously adjusted, so that the passenger can adjust the leg support assembly according to the habit of the passenger, and the design is more humanized.
With reference to fig. 3 and 4, the coupling beam assembly 3 may include a driving beam assembly 31 and a driving beam assembly 32, the driving beam assembly 32 may include the aforementioned power output portion, the driving beam assembly 31 may include a rotating beam 311, the rotating beam 311 may be mounted on a support, and may rotate relative to the support, where the support may be a fixedly mounted component; the outer wall of the turning beam 311 may be provided with a power input beam 312 and a connection beam 313 which are arranged at an angle with the turning beam 311, the power input beam 312 may be the aforementioned power input portion, and the connection beam 313 may be hinged to the driving beam assembly 32.
With such an arrangement, the power input and power output of the coupling beam assembly 3 can be respectively set, and the power input beam 312 of the driving beam assembly 31 can drive the rotating beam 311 to rotate around the supporting member under the action of the driving portion 121, and further can drive the connecting beam 313 to rotate, and can transmit driving force to the transmission beam assembly 32 through the connecting beam 313.
In the solution of the drawing, the connecting beam 313 and the power input beam 312 may be disposed at an angle, that is, the rotating beam 311, the power input beam 312, and the connecting beam 313 may not be coplanar. In addition, the connecting beam 313, the power input beam 312 and the rotating beam 311 can also be located on the same plane, so that the whole driving beam assembly 31 can be prepared by adopting an integrated sheet metal part, and the processing is more convenient, of course, each part of the driving beam assembly 31 can also be processed respectively and then assembled, and the realization of the function of the driving beam assembly 31 is not influenced.
The driving beam assembly 32 may include a coupling beam 321 and a power output beam 322, the power output beam 322 may be the aforementioned power output portion, one end portion of the coupling beam 321 may be hinged, as shown in fig. 1 and 2, the power output beam 322 may form a second hinge point with the coupling beam 313, a third hinge point with the other end portion of the coupling beam 321, a fourth hinge point with the second leg rest assembly 22, and the third hinge point may be located between the second hinge point and the fourth hinge point. Thus, the third hinge point can be equivalent to the fulcrum of the power output beam 322, the rotating connecting beam 313 can apply a driving force to the second hinge point of the power output beam 322, and can force the fourth hinge point of the power output beam 322 to rotate, so as to drive the leg support assembly 2 to rotate around the first hinge point, so as to achieve the extension and retraction of the leg support assembly 2, and meanwhile, the second leg support assembly 22 can extend or retract relative to the first leg support assembly 21.
It will be appreciated that the hinge points described above do not actually exist as "points", each of which actually corresponds to a hinge axis, and in connection with fig. 2, the first hinge point corresponds to the position of the first hinge axis a1, the second hinge point corresponds to the position of the second hinge axis a2, the third hinge point corresponds to the position of the third hinge axis A3, the fourth hinge point corresponds to the position of the fourth hinge axis a4, and the relative rotation of the two hinge parts is actually about the hinge axis therebetween.
In addition, in each of the above embodiments, a specific structure of the coupling beam assembly 3 is described by taking an example in which the power input and the power output are provided separately, and in fact, the power input and the power output of the coupling beam assembly 3 may be integrated into the same component. For example, the driving beam assembly 31 may not be provided, but the side of the second hinge point of the power output beam 322 is directly connected to the driving portion 121, so that the side of the second hinge point of the power output beam 322 may be the power input portion, and the side of the fourth hinge point of the power output beam 322 may be the power output portion, and the technical effects of the leg rest assembly 2 rotating to extend or retract and the second leg rest assembly 22 extending or retracting relative to the first leg rest assembly 21 can also be achieved.
Referring to fig. 5 and 6, the fixing bracket 4 may be disposed below the cushion of the seat, and includes a first supporting beam 41 disposed along the transverse direction, two ends of the first supporting beam 41 may be fixedly mounted, specifically, may be mounted on a seat body portion 51 of the seat frame 5, an outer wall of the first supporting beam 41 may be provided with a second supporting beam 42, an end portion of the second supporting beam 42 away from the first supporting beam 41 may be provided with a third supporting beam 43, the third supporting beam 43 is the aforementioned supporting member, the rotating beam 311 may be mounted on the third supporting beam 43 in an outer covering manner, and the driving assembly 1 may be mounted on the first supporting beam 41.
The structure of the turning beam 311 externally fitted on the third support beam 43 may be a circumferential full-wrap structure or a circumferential half-wrap structure, as long as the turning beam 311 can be attached to the third support beam 43, cannot be separated from the third support beam 43 in the radial direction, and can be turned relative to the third support beam 43.
In the drawings, the third support beam 43 may be a long beam, both ends of which may be connected to the two second support beams 42, respectively, and the rotating beam 311 may be sleeved on the third support beam 43 and located between the two second support beams 42. Besides, the third support beam 43 may also include two short beams, the two short beams may be respectively connected to the two second support beams 42, and the two ends of the rotary beam 311 may be respectively sleeved with the two short beams, so that the technical effect of the rotary beam 311 being externally sleeved on the third support beam 43 and rotating relative to the third support beam 43 can also be achieved.
Further, the beam section of the first support beam 41 for mounting the driving assembly 1 can be recessed downward to reduce the mounting height of the driving assembly 1, and this design can largely prevent interference between the driving assembly 1 and other components of the seat body 51.
Specifically, the recessed position of the first supporting beam 41 may be provided with a mounting bracket 411, the driving assembly 1 may include a driving bracket 11 and a driving member 12 hinged to the driving bracket 11, and in conjunction with fig. 8, the driving bracket 11 may be a substantially U-shaped plate frame, a bottom plate portion of the U-shaped plate frame may be connected to the mounting bracket 411 through a connecting member in the form of a screw, a bolt, or the like, the driving member 12 may be specifically a lead screw motor, a driving portion 121 thereof may be a lead screw, and the lead screw may be located between two side plate portions of the U-shaped plate frame.
When the driving member 12 is started, the screw rod can be displaced along the axial direction thereof to drive the driving beam assembly 31 to rotate around the third supporting beam 43 so as to transmit the driving force to the driving beam assembly 32, and meanwhile, the driving member 12 can rotate around the hinged position of the driving beam assembly and the driving support 11 so as to adapt to the rotation of the driving beam assembly 31.
In the scheme, the lead screw motor is adopted to drive the leg support assembly 2, and compared with the scheme that the traditional leg support mechanism is driven by the regulator, the lead screw motor is pushed by the lead screw to transmit the driving force, so that the adverse effect caused by eccentric rotation of the regulator can be changed, the transmission process has no twisting feeling, and the user experience is better; the response speed of the motor is high, and the adjusting speed and the efficiency are high; in addition, the screw motor is installed on the fixed support 4, and the fixed support 4 does not generate displacement in the process of extending and retracting the leg support assembly 2, that is, the screw motor does not need to extend along with the leg support assembly 2, so that the force required by the rotation process of the leg support assembly 2 can be reduced, and the structure of the leg support assembly 2 can be simpler.
As shown in fig. 6 and 7, the number of the bushes 431 may be two, the two bushes 431 may be respectively located at two ends of the rotation beam 311, and the outer ends of the bushes 431 may have folded portions which may be abutted against the axial ends of the rotation beam 311 when being mounted. Note that "outer" herein means a direction away from the axial center of the turning beam 311.
The third support beam 43 may further have a hinge portion 432, and the aforementioned first hinge point may be formed by the first leg rest assembly 21 and the hinge portion 432, and when the hinge portion 432 is installed, the hinge portion 432 may be abutted against the folded portion of the bushing 431. With such an arrangement, on one hand, the installation position of the bushing 431 can be limited, and the situation that the bushing 431 axially moves out of the rotating beam 311 in the use process can be avoided; on the other hand, the axial installation position of the rotating beam 311 can be determined, so as to ensure the stability of the connecting beam assembly 3 in the transmission process; meanwhile, the folded portion also serves as a buffer between the turning beam 311 and the hinge portion 432, which can reduce the friction between the turning beam 311 and the hinge portion 432, so as to prevent the hinge portion 432 from being damaged due to the continuous rotation of the turning beam 311 in the long-term use process, that is, the bushing 431 can be used as a whole.
With continued reference to fig. 1, an end of the hanging beam 321 may also be hinged to the hinge portion 432, and in particular, may be hinged to the first leg rest assembly 21 at the same position, so as to reduce the number of hinges.
As described above, the connection beam 313 is disposed on the outer wall of the rotary beam 311, the connection beam 313 is disposed substantially axially inward of the rotary beam 311 with respect to the axial end portion of the connection beam 313, the hinge portion 432 is formed axially outward of the rotary beam 311, so that the connection beam 313 and the coupling beam 321 hinged to the hinge portion 432 have a certain axial gap in the axial direction of the rotary beam 311, and the coupling beam 321 and the connection beam 313 are hinged to the power output beam 322, and in order to compensate for the axial gap, a transition joint 323 may be disposed between the coupling beam 321 and the power output beam 322 or between the power output beam 322 and the connection beam 313 to eliminate the axial gap, so that the connection structure of the beams of the coupling assembly 3 may be more compact and have higher stability.
As shown in fig. 9 and 10, the first leg rest assembly 21 may include a first leg rest 211, the second leg rest assembly 22 may include a second leg rest 221, and one of the first leg rest 211 and the second leg rest 221 may be provided with a sliding fit portion in a hole type or a groove type, and the other may be slidably connected with the sliding fit portion to realize relative sliding of the two leg rests. Specifically, the sliding engagement portion may be a slide hole 211a provided in the first leg holder 211, and the second leg holder 211 may slide along the extending direction of the slide hole 211 a.
Further, the shaft sleeve 23 may further include a shaft sleeve 23, the shaft sleeve 23 may include a pad 231 and an insertion part 232, the insertion part 232 may be inserted into the sliding hole 211a, the pad 231 may be located between the first leg support 211 and the second leg support 221 to reduce friction therebetween and eliminate sliding noise, and the insertion part 232 may provide a guide for relative sliding between the first leg support 211 and the second leg support 221; a connecting member 24, which may be a rivet, can be further included, and the connecting member 24 can pass through the shaft sleeve 23 to connect the first leg support 211 and the second leg support 221, and at this time, the shaft sleeve 23 can buffer the friction between the connecting member 24 and the two leg supports.
The number of the first leg holders 211 and the second leg holders 221 may be two, each of the second leg holders 221 may be slidably connected to each of the first leg holders 211 in a one-to-one correspondence, and the second leg holder assembly 22 may further include a support plate 222, the support plate 222 may be connected to the two second leg holders 221, and the support plate 222 may provide a stable support for the legs of the passenger.
Here, the embodiments of the present invention do not limit the structures of the first leg support 211 and the second leg support 221, and both of them may adopt a pipe, a rod, or a plate, a profile, etc., and as in the scheme of the drawings, both of the two leg supports may be made of angle steel.
For the leg rest mechanism provided in the embodiment of the present invention, a limiting structure may be further provided, and the limiting structure may limit a rotation angle of the rotating beam 311 with respect to the third supporting beam 43.
In one aspect, the limiting structure may be disposed between the rotating beam 311 and the third supporting beam 43, and specifically, may be a combination of an arc-shaped limiting hole disposed on the rotating beam 311 and a limiting block disposed on the third supporting beam 43.
In another alternative, the limit structure may be an effective stroke of the lead screw, so that the rotation angle of the rotation beam 311 with respect to the third support beam 43 may be limited by a range of the stroke through which the lead screw is extended or retracted.
In another alternative, the limiting structure may also be the length of the sliding hole 211a to limit the rotation angle of the rotating beam 311 relative to the third supporting beam 43 by the relative sliding range of the first leg rest assembly 21 and the second leg rest assembly 22.
In comparison, the three solutions can all realize the function of adjusting the angle of the leg rest assembly 2, and the latter two solutions do not need to add new parts, so the structure is relatively simple, and in the specific implementation, the three solutions can all be implemented alternatively or in combination.
As shown in fig. 11 and 12, the present invention further provides a seat, which includes a seat frame 5, wherein the seat frame 5 includes a seat body portion 51 and a seat back portion 52 connected to each other, and the seat body portion 51 is further provided with a leg rest mechanism, wherein the leg rest mechanism may be the leg rest mechanism of the seat according to the foregoing embodiments.
Since the leg rest mechanism of the seat has the above technical effects, the seat having the leg rest mechanism also has similar technical effects, and therefore, the detailed description thereof is omitted here.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (13)
1. A leg rest mechanism for a seat, comprising:
the driving assembly (1) is arranged on the fixed bracket (4);
the leg support assembly (2) comprises a first leg support assembly (21) and a second leg support assembly (22), wherein the first leg support assembly is provided with a sliding fit part with a hole type or a groove type, the second leg support assembly is connected with the first leg support assembly in a sliding mode along the extending direction of the sliding fit part, and the upper end of the first leg support assembly (21) forms a first hinge point;
the connecting beam assembly (3) comprises a power input part and a power output part, the power input part is connected with a driving part (121) of the driving assembly (1), the power output part is connected with the second leg support component (22), and when the driving assembly (1) is started, the power output part can drive the first leg support component (21) to rotate relative to the first hinge point, so that the leg support assembly (2) is switched between a retracted state and an extended state;
in the extended state, the second leg rest assembly (22) extends relative to the first leg rest assembly (21), and in the retracted state, the second leg rest assembly (22) retracts relative to the first leg rest assembly (21).
2. The leg support mechanism of the seat according to claim 1, wherein the coupling beam assembly (3) comprises a driving beam assembly (31) and a driving beam assembly (32), the driving beam assembly (32) comprises the power output part, the driving beam assembly (31) comprises a rotating beam (311), the rotating beam (311) is mounted on a support part and can rotate relative to the support part, a power input beam (312) and a connecting beam (313) which are arranged at an included angle with the rotating beam (311) are mounted on the outer wall of the rotating beam (311), the power input beam (312) is the power input part, and the connecting beam (313) is hinged to the driving beam assembly (32).
3. The leg rest mechanism of the seat according to claim 2, wherein the transmission beam assembly (32) comprises a connecting beam (321) and a power output beam (322), the power output beam (322) is the power output part, one end part of the connecting beam (321) is hinged, the power output beam (322) forms a second hinge point with the connecting beam (313), forms a third hinge point with the other end part of the connecting beam (321), forms a fourth hinge point with the second leg rest assembly (22), and the third hinge point is located between the second hinge point and the fourth hinge point.
4. The leg rest mechanism of a seat according to claim 3, wherein the fixed bracket (4) is arranged below a cushion of the seat and comprises a first supporting beam (41) arranged along the transverse direction, the first supporting beam (41) is fixedly installed, a second supporting beam (42) is arranged on the outer wall of the fixed bracket, a third supporting beam (43) is arranged on the end part, far away from the first supporting beam (41), of the second supporting beam (42), the third supporting beam (43) is the supporting piece, the rotating beam (311) is externally installed on the third supporting beam (43), and the driving assembly (1) is installed on the first supporting beam (41).
5. The leg rest mechanism of the seat according to claim 4, wherein the beam section of the first support beam (41) on which the drive assembly (1) is mounted is recessed downward, and the recessed position is provided with a mounting bracket (411);
drive assembly (1) including drive support (11) and with driving piece (12) of drive support (11) hinge, drive support (11) are fixed in installing support (411), driving piece (12) are screw motor, drive division (121) are the lead screw, driving piece (12) can drive the lead screw carries out the displacement along its axial.
6. The leg rest mechanism of the seat according to claim 5, further comprising a limiting structure for limiting a rotation angle of the rotation beam (311) with respect to the third support beam (43);
the limiting structure is arranged between the rotating beam (311) and the third supporting beam (43), or the limiting structure is the effective stroke of the screw rod.
7. The leg rest mechanism of the seat according to claim 4, wherein a bushing (431) is provided between the turning beam (311) and the third support beam (43), and the third support beam (43) is provided with a hinge portion (432), the first leg rest assembly (21) and the hinge portion (432) forming the first hinge point.
8. The leg rest mechanism of the seat as claimed in claim 7, wherein the number of the bushings (431) is two, the two bushings (431) are respectively inserted into two axial ends of the rotating beam (311), and the outer ends of the bushings (431) are provided with folded portions, and in an assembled state, two axial ends of the folded portions are respectively abutted against the corresponding ends of the hinge portion (432) and the rotating beam (311).
9. The leg rest mechanism of the seat according to claim 7, wherein one end of the hanging beam (321) is also hinged to the hinge portion (432);
still include transition connector (323), transition connector (323) are located link hang roof beam (321) with between power output roof beam (322), perhaps, transition connector (323) are located tie-beam (313) with between power output roof beam (322).
10. The leg rest mechanism of the seat according to any one of claims 1 to 9, wherein the first leg rest assembly (21) includes a first leg rest (211), the second leg rest assembly (22) includes a second leg rest (221), the sliding engagement portion is a sliding hole (211a) provided in the first leg rest (211), and the second leg rest (221) is slidably connected to the sliding hole (211 a).
11. The leg rest mechanism of the seat according to claim 10, further comprising a bushing (23), wherein the bushing (23) comprises a pad part (231) and a plug part (232), the plug part (232) is plugged into the sliding hole (211a), and the pad part (231) is located between the first leg rest (211) and the second leg rest (221);
the connecting piece (24) penetrates through the shaft sleeve (23) to connect the first leg support (211) and the second leg support (221).
12. The leg rest mechanism of the seat according to claim 10, wherein the number of the first leg rest (211) and the second leg rest (221) is two, and each second leg rest (221) is slidably connected with each first leg rest (211) in a one-to-one correspondence manner;
the second leg support assembly (22) further comprises a support plate (222), and the support plate (222) is connected with the two second leg supports (221).
13. A seat comprising a seat frame (5), said seat frame (5) comprising a seat portion (51) and a back portion (52), said seat portion (51) being further provided with a legrest mechanism, characterized in that said legrest mechanism is a legrest mechanism of a seat according to any of claims 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911054418.XA CN110626242A (en) | 2019-10-31 | 2019-10-31 | Seat and leg support mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911054418.XA CN110626242A (en) | 2019-10-31 | 2019-10-31 | Seat and leg support mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110626242A true CN110626242A (en) | 2019-12-31 |
Family
ID=68978525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911054418.XA Pending CN110626242A (en) | 2019-10-31 | 2019-10-31 | Seat and leg support mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110626242A (en) |
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| 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 |
| KR20230088960A (en) * | 2021-12-13 | 2023-06-20 | 광명산업(주) | Extendable leg-rest |
| WO2023134218A1 (en) * | 2022-01-11 | 2023-07-20 | 延锋国际汽车技术有限公司 | Multi-stage telescopic leg rest for seat |
| CN117382514A (en) * | 2023-12-12 | 2024-01-12 | 无锡普泽精密机械有限公司 | Leg support device of automobile seat |
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