Multi-directional leg support device for vehicle seat

Abstract

The utility model discloses a multidirectional leg supporting device for a vehicle seat, and belongs to the technical field of vehicle seats. Comprising a mounting bracket unit; the telescopic connecting rod assembly is hinged to the mounting support unit, and the telescopic connecting rod assembly can do reciprocating telescopic motion; the bearing framework plate is connected to the telescopic connecting rod assembly, and the telescopic connecting rod assembly can drive the bearing framework plate to move front and back; the device is characterized by further comprising an outer housing which is fixedly mounted on the bearing framework plate; the stretching leg supporting plate is connected to the supporting framework plate in a sliding manner; the stretching driving unit is installed on the bearing framework plate, and the stretching driving unit can drive the stretching leg supporting plate to move; the overturning pedal plate is rotationally connected to the stretching leg support plate and rotates relative to the stretching leg support plate; and the turnover driving mechanism is used for driving the turnover pedal plate to perform turnover action, namely stretching and storage. The leg support device has the advantages that multi-directional telescopic adjustment of the leg support device is realized, the legs of a driver and passengers are efficiently stretched and supported to the greatest extent, the feet of the passengers are supported, and the riding comfort is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle seats, and particularly relates to a multi-directional leg rest device for vehicle seats. Background Art

[0002] At present, adjusting the front-back position of the vehicle seat and the tilt angle of the backrest to meet the riding comfort of passengers is the most basic function of the vehicle seat. In some luxury SUVs, commercial vehicles or tour buses, in order to ensure the comfort of passengers during long-term rides and increase the attractiveness of the vehicle, automobile manufacturers often connect a seat leg rest to the front side of the vehicle seat. When a passenger sits on a seat equipped with a leg rest structure, they can drive the leg rest structure to extend according to their own needs and place the lower leg on the support plate of the leg rest mechanism. This can effectively relax the leg muscles and relieve the numbness, fatigue and soreness of the lower legs caused by long-term bending during riding, enabling passengers to sit or lie down in a more comfortable posture. When not in use, the leg rest mechanism can be retracted and placed flat on the front side of the seat to save space.

[0003] In the publicly available Chinese patent literature, there are many relevant technical information about the leg rest telescopic mechanism of vehicle seats. Some examples are CN202764741U (automobile seat leg rest skeleton), CN207860026U (electric leg rest for commercial seats), CN212890018U (seat leg rest skeleton with diverse interfaces), CN212313364U (four-direction leg rest mechanism for automobile seats), etc. Typically, a leg rest device for a vehicle seat disclosed in a patent document with the publication number CN118046814A includes: a base bracket installed at the lower part of the seat cushion of the vehicle seat; a rear link connected to the side of the base bracket; a front link connected to the side of the base bracket above the rear link; a main link hinged to one end of the rear link and the middle part of the front link; a support link connected to one end of the front link; and a leg rest link connected to one end of the main link and the support link. The rear link, front link, main link, support link and leg rest link are arranged in pairs facing each other in the width direction of the base bracket. It also includes: a main tube spanning across a pair of the main links; an auxiliary tube opposite to the main tube and spanning across a pair of leg rest links; and a motor assembly connected to the main tube and to the auxiliary tube, which can minimize the weight and the number of components of the leg rest device of the vehicle seat. However, it has the common drawbacks of the above-mentioned patent documents: when the leg rest device is unfolded, it can only support the human thigh and the upper part of the lower leg, while the lower part of the passenger's lower leg and both feet are suspended and have no corresponding support, resulting in a lower comfort level for the lower part of the legs and being unable to effectively relieve the soreness of the feet during long-term rides.

[0004] The utility model patent with the authorization announcement number CN216185691U discloses a six-way electric leg support device for a car seat, including a calf length adjustment mechanism, a knee angle adjustment mechanism, and a foot pedal adjustment mechanism; the calf length adjustment mechanism includes a three-stage telescopic frame, and a flexible telescopic driving mechanism fixed in the three-stage telescopic frame for driving the three-stage telescopic frame to extend and retract; the knee angle adjustment mechanism is fixed on the calf length adjustment mechanism for driving the calf length adjustment mechanism to pitch and rotate; the foot pedal adjustment mechanism is fixed at the front end of the calf length adjustment mechanism. It is composed of three main modules: the knee angle adjustment mechanism, the calf length adjustment mechanism, and the foot pedal adjustment mechanism, forming a six-way electric adjustment, and the above modules can be adjusted separately to achieve a comfortable posture setting. Although it has the advantages of improving comfort and reducing costs, its overall structure is complex, the number of components is large, the assembly is cumbersome, and there is a risk of mutual interference between the components, which increases the risk of operating safety and causes high production costs. It also leads to poor transmission efficiency and reduces the stability of operation, and there is also the problem of cumbersome operation.

[0005] In view of the above situation, it is necessary to reasonably improve the leg support device of the existing vehicle seat. For this reason, the applicant has made a useful design, and the technical scheme to be introduced below is produced under this background. Utility Model Content

[0006] The purpose of the utility model is to provide a multi-directional leg support device for vehicle seats which has a compact structure, firm connections between components, and is reliable and durable. It helps to provide maximum support for human legs by adding an extendable leg support plate and a flip-up foot pedal so that the leg support device can achieve multi-directional adjustment of length, vertical height and foot support, thereby enhancing the luxury and comfort of the vehicle. It is also helpful to simplify the drive structure so as to effectively and reliably realize the extension and storage actions and significantly reduce the complexity of the structure, and is convenient for optimizing the structure to ensure superior smoothness during operation and reduce the shaking gap.

[0007] To achieve the above object, the technical solution provided by the present utility model is as follows: A multi-directional leg rest device for a vehicle seat, comprising a mounting bracket unit fixedly connected to the vehicle seat frame; a telescopic link assembly hinged to the mounting bracket unit and capable of reciprocating telescopic movement; a supporting skeleton plate connected to a position on the side of the telescopic link assembly away from the mounting bracket unit, and the telescopic link assembly capable of driving the supporting skeleton plate to move back and forth; characterized in that it further comprises: an outer housing fixedly installed on the supporting skeleton plate, and a receiving space formed between the outer housing and the supporting skeleton plate; an extended leg rest plate slidably connected to a surface of the supporting skeleton plate opposite to the telescopic link assembly, and the extended leg rest plate disposed in the receiving space between the outer housing and the supporting skeleton plate, and the extended leg rest plate capable of reciprocating up and down relative to the supporting skeleton plate and protruding downward from the receiving space; an extension driving unit installed on the supporting skeleton plate and capable of driving the extended leg rest plate to move; a flip pedal rotatably connected to a position below a surface of the extended leg rest plate opposite to the telescopic link assembly, and the flip pedal capable of rotating relative to the extended leg rest plate; a flip driving mechanism installed at the connection between the extended leg rest plate and the flip pedal, and the flip driving mechanism for driving the flip pedal to perform a flipping action, i.e., extension and retraction.

[0008] In a specific embodiment of the present utility model, the mounting bracket unit includes a pair of mirror-symmetrically arranged connecting plates, a reinforcing cross beam arranged horizontally is connected between the two connecting plates, and a plurality of connecting plate fixing holes for fixedly connecting with the vehicle seat frame are respectively formed on the two connecting plates.

[0009] In another specific embodiment of the present utility model, the telescopic link assembly further includes a driving rod, a pair of power arms, a pair of power arm links, a pair of adjusting links and a pair of leg rest links; wherein, the two power arms are arranged oppositely and are respectively hinged to their corresponding connecting plates, and the driving rod is arranged between the two power arms and is positioned at the end of the upper part of the power arm close to the hinge with the connecting plate. The two power arm links are respectively overlapped with their corresponding power arms in a cross manner and are hinged to each other in the middle. The lower ends of the two adjusting links are respectively hinged to the lower ends of their corresponding power arm links, and the upper ends of the two adjusting links are respectively hinged to the lower parts of their corresponding connecting plates. The lower ends of the two leg rest links are respectively hinged to the lower ends of their corresponding power arms, and the extended leg rest plate is positioned and connected at the upper ends of the two leg rest links and the two power arm links.

[0010] In yet another specific embodiment of the present utility model, the telescopic link assembly further includes a telescopic power mechanism, which includes an extension driving motor I, a worm and worm gear device and an extension driving screw I; wherein, the worm and worm gear device is fixedly installed on the strengthening cross beam of the installation bracket unit through a mounting plate, and the outer shell of the extension driving motor I is fixedly connected to the outer shell of the worm and worm gear device, and the output end of the extension driving motor I is in transmission connection with the transmission component inside the worm and worm gear device. The extension driving screw I penetrates into the worm and worm gear device and is in transmission connection therewith. One end of the extension driving screw I in the length direction is connected to the driving rod of the telescopic link assembly, and the extension driving screw I can drive the telescopic link assembly to make the extended leg rest plate and the flip footrest perform extension or retraction actions.

[0011] In still another specific embodiment of the present utility model, a side matching frame of the supporting skeleton plate is arranged at the edge positions of the left and right ends of the supporting skeleton plate, and outer shell connecting plates are formed towards the supporting skeleton plate at the edge positions of the left and right ends of the outer housing. The two outer shell connecting plates are respectively fixedly connected to their corresponding side matching frames of the supporting skeleton plate, so that the outer housing is fixedly installed on the supporting skeleton plate.

[0012] In still another specific embodiment of the present utility model, at the edge positions of the left and right ends of the stretching leg support plate, a stretching leg support plate guide rail plate is formed at each position. On the surface of the supporting skeleton plate facing the stretching leg support plate, a pair of supporting skeleton plate sliding tracks are fixedly installed. The two stretching leg support plate guide rail plates are respectively slidably connected to the corresponding supporting skeleton plate sliding tracks and can slide along the supporting skeleton plate sliding tracks, so that the stretching leg support plate can reciprocally slide on the supporting skeleton plate.

[0013] In a further specific embodiment of the present utility model, the stretching driving unit includes a stretching driving motor II, a stretching driving transmission box, a stretching driving screw II, and a scissor link assembly. Among them, the stretching driving motor II is fixedly installed at the bottom position of the surface of the supporting skeleton plate opposite to the telescopic link assembly. The stretching driving transmission box is connected to the output end of the stretching driving motor II and is positioned and installed at the lower part of the stretching leg support plate, and the stretching driving transmission box is in transmission connection with the stretching driving motor II. The stretching driving screw II passes through the stretching driving transmission box and is in transmission connection with it. The length direction of the stretching driving screw II is parallel to the stretching leg support plate, and the stretching driving transmission box can drive the stretching driving screw II to perform a reciprocating motion along its length direction. The scissor link assembly is arranged on the surface of the supporting skeleton plate opposite to the telescopic link assembly, and the scissor link assembly is connected to the stretching leg support plate and can drive the stretching leg support plate to move. The scissor link assembly includes at least two sets of link groups connected in sequence from top to bottom. The link group is formed by two cross links intersecting in an X-shaped structure. The centers of the two cross links are hinged by a cross link rotating shaft, and adjacent link groups are hinged by a link hinge shaft. At the top connection of the two cross links at the top of the scissor link assembly, a scissor link connection column is also installed. At the top end of the stretching driving screw II, a stretching driving screw connection seat is also connected. The scissor link connection column extends into the stretching driving screw connection seat and is fixedly connected to it, so that the stretching driving screw II is in transmission connection with the scissor link assembly, and the stretching driving screw II can drive the scissor link assembly to perform stretching and retracting actions. At the bottom connection of the two cross links at the bottom of the scissor link assembly, a stretching leg support plate connection seat is also installed. The stretching leg support plate is connected to the scissor link assembly through the stretching leg support plate connection seat.

[0014] In a further specific embodiment of the present utility model, a receiving groove for the extended leg support plate is formed at the bottom part of the extended leg support plate. The shape of the receiving groove for the extended leg support plate is adapted to the shape of the plate body of the flip pedal. When the flip pedal is in the retracted state, it is cooperatively installed in the receiving groove for the extended leg support plate, and the bottom part of the flip pedal is rotatably connected to the bottom part of the extended leg support plate.

[0015] In yet another specific embodiment of the present utility model, the flip driving mechanism includes a flip driving motor, a flip driving transmission box, a flip driving screw rod, a pair of connecting frames, and a flip driving gear block. Among them, the flip driving mechanism is integrally arranged on the surface of the extended leg support plate opposite to the telescopic link assembly. The flip driving motor is fixedly installed on the extended leg support plate, and the flip driving transmission box is connected to the output end of the flip driving motor. The two connecting frames are arranged at intervals and are also fixedly connected to the extended leg support plate. The flip driving transmission box is installed on one of the connecting frames. The flip driving transmission box is in transmission connection with the flip driving motor. The flip driving screw rod passes through the flip driving transmission box and is in transmission connection with it. The flip driving transmission box can drive the flip driving screw rod to perform reciprocating motion along its length direction. One end of the flip driving screw rod in the length direction is also connected with a flip driving screw rod connecting head. The flip driving gear block is rotatably connected between the two connecting frames, and the flip driving gear block passes through the plate body of the extended leg support plate. The flip driving gear block is in transmission connection with the flip driving screw rod connecting head through a connecting rod. During the reciprocating motion of the flip driving screw rod, it can drive the flip driving gear block to rotate through the flip driving screw rod connecting head.

[0016] In yet another specific embodiment of the present utility model, a plurality of rotating shaft connecting seats are convexly formed at the bottom part of the flipping footrest. The plurality of rotating shaft connecting seats extend towards the extending leg support plate, and a rotating shaft is also cooperatively installed on the plurality of rotating shaft connecting seats. The rotating shaft extends along the length direction of the flipping footrest and passes through the plurality of rotating shaft connecting seats. A rotating shaft sector gear member is fixedly sleeved at the middle position in the length direction of the rotating shaft. A rotating shaft sector gear member is fixedly sleeved at the middle position in the length direction of the rotating shaft. A pair of sector gear member positioning brackets are formed on the extending leg support plate and at positions corresponding to the rotating shaft sector gear member. The rotating shaft sector gear member is cooperatively installed between the two sector gear member positioning brackets and can reciprocally rotate. The shaft body of the rotating shaft passes through the two sector gear member positioning brackets and realizes rotational cooperation therewith. The flipping drive gear block of the flipping drive mechanism passes through the plate body of the extending leg support plate and extends into the space between the two sector gear member positioning brackets. The flipping drive gear block meshes with the rotating shaft sector gear member. The flipping drive gear block can drive the rotating shaft sector gear member to rotate and further drive the rotating shaft and the flipping footrest body to perform a flipping action.

[0017] After the present utility model adopts the above structure, it has the following beneficial effects: First, by adding an extended leg support plate and a flip pedal, after the support skeleton plate extends itself driven by the telescopic link assembly, the extended leg support plate and the flip pedal can move downward from the support skeleton plate driven by the extension drive unit, so as to achieve the maximum support for the human leg, relieve the fatigue of the lower leg of passengers during long-term sitting, and at the same time can meet the use needs of passengers with different body sizes, that is, different leg lengths, and achieve the support for the lower part of the lower leg. Then, the flip pedal can be flipped outward driven by the flip drive mechanism, and the flip pedal can form an angle with the extended leg support plate, and the feet of the passenger can be placed on the flip pedal, so that the leg rest device realizes multi-directional adjustment of length, vertical height and foot support, and has excellent smoothness and small shaking clearance during operation, effectively improving the luxury and comfort of the vehicle, and having significant promotional significance; Second, since the telescopic link assembly is integrally connected to the mounting bracket unit and the support skeleton plate, it does not additionally occupy the space at the rear of the mounting bracket unit, that is, the bottom of the vehicle seat. The extension drive unit is integrally connected to the support skeleton plate and drives the movement of the extended leg support plate by using a scissor link assembly, thus greatly simplifying the installation structure and reducing the space occupation, being beneficial to the reasonable distribution of the space at the bottom of the seat, having a firm combination, being easy to install, having a high assembly efficiency, a small complexity of the drive structure, a small range of movement during telescopic movement and extension drive, and a more stable movement track, and being more reliable in support during unfolding and storage, ensuring the reliability of use; In addition, by setting an outer cover shell fixedly connected to the support skeleton plate, the outer cover shell and the support skeleton plate are combined to form a box structure, and the extended leg support plate is accommodated in the box structure and can move downward and penetrate out of the box structure. The structure of telescopic retraction effectively ensures the overall stability of the device, and can save space to a certain extent. When the extended leg support plate is not extended outward, it is not only convenient for the driver and passengers to get in and out, but also has good action consistency. When the passenger is sitting on the seat, the multi-directional adjustment of the leg rest device can be realized efficiently and conveniently, thus ensuring the comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is an exploded perspective view of the present utility model;

[0020] Figure 3 is an exploded perspective view of the present utility model from another angle;

[0021] Figure 4 is a schematic diagram of the connection structure between the extended leg support plate and the extension drive unit of the present utility model;

[0022] Figure 5 This is a schematic structural diagram of the present utility model in the extended state;

[0023] In the figure: 1. Installation bracket unit, 11. Connecting plate, 111. Connecting plate fixing hole, 12. Reinforcing cross beam; 2. Telescopic link assembly, 21. Driving rod, 22. Power arm, 23. Power arm link, 24. Adjusting link, 25. Leg support link, 26. Telescopic power mechanism, 261. Extension driving motor I, 262. Worm and worm gear device, 263. Extension driving screw I; 3. Support skeleton plate, 31. Side fitting frame of support skeleton plate, 32. Sliding track of support skeleton plate; 4. Outer housing, 41. Accommodation space, 42. Outer housing connecting plate; 5. Extended leg support plate, 51. Guide rail plate of extended leg support plate, 52. Accommodation groove of extended leg support plate, 53. Positioning bracket for sector gear part; 6. Extension driving unit, 61. Extension driving motor II, 62. Extension driving transmission box, 63. Extension driving screw II, 631. Extension driving screw connecting seat, 64. Scissor link assembly, 641. Link group, 6411. Cross link, 6412. Cross link rotating shaft, 642. Link hinge shaft, 643. Scissor link connecting column, 644. Extended leg support plate connecting seat; 7. Flipping footrest, 71. Swivel shaft connecting seat, 72. Swivel shaft, 73. Swivel shaft sector gear part; 8. Flipping driving mechanism, 81. Flipping driving motor, 82. Flipping driving transmission box, 83. Flipping driving screw, 831. Flipping driving screw connecting head, 84. Connecting frame body, 85. Flipping driving gear block. Detailed implementation manners

[0024] The following will be described in detail by way of embodiments. However, the descriptions of the embodiments are not limitations on the solutions of the present utility model. Any formal but non-substantive equivalent transformation made based on the concept of the present utility model should be regarded as falling within the scope of the technical solutions of the present utility model.

[0025] In the following descriptions, all directional or azimuthal concepts such as up, down, left, right, front and back are based on Figure 1 the position shown, and thus cannot be understood as special limitations on the technical solutions provided by the present utility model.

[0026] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Please refer to Figures 1 to 5 , which shows a multi-directional leg rest device for a vehicle seat, including a mounting bracket unit 1 fixedly connected to the vehicle seat frame; a telescopic link assembly 2, the telescopic link assembly 2 is hinged to the mounting bracket unit 1, and the telescopic link assembly 2 can achieve reciprocating telescopic movement; a supporting skeleton plate 3, the supporting skeleton plate 3 is connected to a position on the side of the telescopic link assembly 2 away from the mounting bracket unit 1, and the telescopic link assembly 2 can drive the supporting skeleton plate 3 to move back and forth, so as to achieve the length adjustment of the leg rest device in the horizontal direction and realize the extension or retraction of the leg rest device.

[0028] As the technical key points of the technical solution provided by the present utility model: the multi-directional leg rest device for the vehicle seat further includes an outer housing 4, the outer housing 4 is fixedly installed on the supporting skeleton plate 3, and a receiving space 41 is formed between the outer housing 4 and the supporting skeleton plate 3; an extended leg rest plate 5, the extended leg rest plate 5 is slidably connected to the surface of the supporting skeleton plate 3 opposite to the telescopic link assembly 2, and the extended leg rest plate 5 is disposed in the receiving space 41 between the outer housing 4 and the supporting skeleton plate 3, and the extended leg rest plate 5 can reciprocate up and down relative to the supporting skeleton plate 3 and protrude downward from the receiving space 41, so as to achieve the length adjustment of the leg rest device in the vertical direction, meet the use of passengers with different leg lengths, and improve the comfort; an extension driving unit 6, the extension driving unit 6 is installed on the supporting skeleton plate 3, and the extension driving unit 6 can drive the extended leg rest plate 5 to move; a flip pedal 7, the flip pedal 7 is rotatably connected to a position below the surface of the extended leg rest plate 5 opposite to the telescopic link assembly 2, and the flip pedal 7 can rotate relative to the extended leg rest plate 5; a flip driving mechanism 8, the flip driving mechanism 8 is installed at the connection between the extended leg rest plate 5 and the flip pedal 7, and the flip driving mechanism 8 is used to drive the flip pedal 7 to perform a flipping action, that is, extension and retraction. As Figure 4 shown, when the flip pedal 7 completes the flipping, it can be positioned and inclined at the front end of the extended leg rest plate 5, and the flip pedal 7 can effectively relieve the fatigue of the feet as a pedal for the human foot to rest on.

[0029] Furthermore, the mounting bracket unit 1 includes a pair of mirror-symmetrically arranged connecting plates 11, the connecting plates 11 are in the shape of a triangular plate-like member, a reinforcing cross beam 12 is arranged horizontally between the two connecting plates 11, and a plurality of connecting plate fixing holes 111 for fixedly connecting with the vehicle seat frame are respectively formed on the two connecting plates 11.

[0030] Please continue to refer to Figure 1 With Figure 2 And focusing on combiningFigure 5 , the aforementioned telescopic link assembly 2 further includes a driving rod 21, a pair of power arms 22, a pair of power arm links 23, a pair of adjusting links 24 and a pair of leg rest links 25; wherein, the two aforementioned power arms 22 are arranged oppositely and are respectively hinged to the corresponding connecting plates 11, and the aforementioned driving rod 21 is arranged between the two power arms 22 and is positioned at the end of the upper part of the power arm 22 close to the hinged end with the connecting plate 11. The two aforementioned power arm links 23 are respectively cross-overlapped with the corresponding power arm 22 and are hinged to each other in the middle. The lower end parts of the two aforementioned adjusting links 24 are respectively hinged to the lower end parts of the corresponding power arm link 23, and the upper end parts of the two adjusting links 24 are respectively hinged to the lower parts of the corresponding connecting plates 11. The lower end parts of the two aforementioned leg rest links 25 are respectively hinged to the lower end parts of the corresponding power arms 22, and the aforementioned extended leg rest plate 5 is positioned and connected at the upper end parts of the two aforementioned leg rest links 25 and the two aforementioned power arm links 23.

[0031] In this embodiment, the aforementioned telescopic link assembly 2 further includes a telescopic power mechanism 26, and the telescopic power mechanism 26 includes an extension driving motor I 261, a worm and worm gear device 262 and an extension driving screw I 263; wherein, the aforementioned worm and worm gear device 262 is fixedly installed on the strengthening cross beam 12 of the aforementioned mounting bracket unit 1 through a mounting plate, and the outer shell of the aforementioned extension driving motor I 261 is fixedly connected to the outer shell of the aforementioned worm and worm gear device 262, and the output end of the extension driving motor I 261 is in transmission connection with the transmission component inside the aforementioned worm and worm gear device 262. The aforementioned extension driving screw I 263 penetrates into the worm and worm gear device 262 and is in transmission connection with it. One end of the extension driving screw I 263 in the length direction is connected to the driving rod 21 of the aforementioned telescopic link assembly 2, and the extension driving screw I 263 can drive the aforementioned telescopic link assembly 2 so that the aforementioned extended leg rest plate 5 and the flip pedal 7 perform extension or retraction actions.

[0032] Please refer to Figure 2 and Figure 3 , at the edge positions of the left and right ends of the aforementioned supporting skeleton plate 3, a side matching frame 31 of the supporting skeleton plate is respectively arranged, and on the edge positions of the left and right ends of the aforementioned outer housing 4, outer housing connecting plates 42 are respectively formed towards the aforementioned supporting skeleton plate 3, and the two outer housing connecting plates 42 are respectively fixedly connected to the corresponding side matching frames 31 of the supporting skeleton plate, so that the outer housing 4 is fixedly installed on the aforementioned supporting skeleton plate 3.

[0033] In this embodiment, guide plates 51 of the extended leg rest plate are respectively formed at the edge positions of the left and right ends of the aforementioned extended leg rest plate 5, and as Figure 2As shown, the number of the stretching leg support plate guide rails 51 is two, and a pair of support frame plate sliding tracks 32 are fixedly installed on the surface of the support frame plate 3 facing the stretching leg support plate 5. The two stretching leg support plate guide rails 51 are respectively slidably connected to the corresponding support frame plate sliding tracks 32 and can slide along the support frame plate sliding tracks 32, so that the stretching leg support plate 5 can reciprocally slide on the support frame plate 3.

[0034] In the actual production process and use process, a soft foaming material is coated on the outer housing 4 and the stretching leg support plate 3, and thus a leg support can be formed. When a passenger is sitting, the legs can be placed on the leg support to relieve the muscle soreness caused by long-term sitting.

[0035] Please refer to Figure 3 and combine with Figure 4, the aforementioned stretching drive unit 6 includes a stretching drive motor II 61, a stretching drive transmission case 62, a stretching drive screw rod II 63, and a scissor link assembly 64; wherein, the aforementioned stretching drive motor II 61 is fixedly installed at the bottom position of the surface of the aforementioned supporting skeleton plate 3 opposite to the aforementioned telescopic link assembly 2, the aforementioned stretching drive transmission case 62 is connected to the output end of the aforementioned stretching drive motor II 61 and is positioned and installed at the lower part of the stretching leg support plate 5, and the stretching drive transmission case 62 is in transmission connection with the aforementioned stretching drive motor II 61, the aforementioned stretching drive screw rod II 63 passes through the aforementioned stretching drive transmission case 62 and is in transmission connection with it, the length direction of the stretching drive screw rod II 63 is parallel to the aforementioned stretching leg support plate 5, and the stretching drive transmission case 62 can drive the aforementioned stretching drive screw rod II 63 to reciprocate along its length direction; the aforementioned scissor link assembly 64 is arranged on the surface of the aforementioned supporting skeleton plate 3 opposite to the aforementioned telescopic link assembly 2, and the scissor link assembly 64 is connected to the aforementioned stretching leg support plate 5 and can drive the stretching leg support plate 5 to move, the aforementioned scissor link assembly 64 includes at least two sets of link groups 641 connected in sequence from top to bottom, the aforementioned link group 641 is formed by two cross links 6411 crossing in an X-shaped structure, the centers of the two cross links 6411 are hinged through a cross link rotating shaft 6412, and adjacent link groups 641 are hinged through a link hinge shaft 642, a scissor link connection column 643 is also installed at the top connection of the two cross links 6411 at the top of the scissor link assembly 64, and a stretching drive screw rod connection seat 631 is also connected to the top end of the aforementioned stretching drive screw rod II 63, the aforementioned scissor link connection column 643 extends into the aforementioned stretching drive screw rod connection seat 631 and is fixedly connected to it, so that the aforementioned stretching drive screw rod II 63 is in transmission connection with the aforementioned scissor link assembly 64, and the stretching drive screw rod II 63 can drive the scissor link assembly 64 to perform stretching and retracting actions, and a stretching leg support plate connection seat 644 is also installed at the bottom connection of the two cross links 6411 at the bottom of the scissor link assembly 64, and the aforementioned stretching leg support plate 5 is connected to the aforementioned scissor link assembly 64 through the stretching leg support plate connection seat 644.

[0036] Further, a stretching leg support plate accommodation groove 52 is formed at the bottom part of the aforementioned stretching leg support plate 5, the shape of the stretching leg support plate accommodation groove 52 is adapted to the plate shape of the aforementioned flip pedal 7, and when the flip pedal 7 is in the retracted state, it is fitted and installed in the stretching leg support plate accommodation groove 52, and the bottom part of the flip pedal 7 is rotatably connected to the bottom part of the aforementioned stretching leg support plate 5.

[0037] Please refer to Figures 2 to 5, the aforementioned flipping drive mechanism 8 includes a flipping drive motor 81, a flipping drive transmission case 82, a flipping drive screw 83, a pair of connecting frames 84 and a flipping drive gear block 85; among them, the aforementioned flipping drive mechanism 8 is integrally arranged on the surface of the aforementioned extending leg support plate 5 opposite to the aforementioned telescopic link assembly 2, the aforementioned flipping drive motor 81 is fixedly installed on the extending leg support plate 5, and the aforementioned flipping drive transmission case 82 is connected to the output end of the aforementioned flipping drive motor 81, and the two aforementioned connecting frames 84 are arranged at intervals and are also fixedly connected to the aforementioned extending leg support plate 5, and the aforementioned flipping drive transmission case 82 is installed on one of the connecting frames 84, the aforementioned flipping drive transmission case 82 is in transmission connection with the aforementioned flipping drive motor 81, the aforementioned flipping drive screw 83 passes through the aforementioned flipping drive transmission case 82 and is in transmission connection with it, and the flipping drive transmission case 82 can drive the aforementioned flipping drive screw 83 to perform reciprocating motion along its length direction, and a flipping drive screw connecting head 831 is also connected to one end of the length direction of the aforementioned flipping drive screw 83, the aforementioned flipping drive gear block 85 is rotatably connected between the two aforementioned connecting frames 84, and the flipping drive gear block 85 passes through the plate body of the extending leg support plate 5, and the flipping drive gear block 85 is in transmission connection with the aforementioned flipping drive screw connecting head 831 through a connecting rod member, and during the reciprocating motion of the aforementioned flipping drive screw 83, it can drive the flipping drive gear block 85 to rotate through the flipping drive screw connecting head 831.

[0038] Further, a plurality of flipping shaft connecting seats 71 are convexly formed on the bottom part of the aforementioned flipping footrest 7, the plurality of aforementioned flipping shaft connecting seats 71 extend towards the aforementioned extending leg support plate 5, and a flipping shaft 72 is also fitted and installed on the plurality of flipping shaft connecting seats 71, the flipping shaft 72 extends along the length direction of the aforementioned flipping footrest 7 and passes through the plurality of flipping shaft connecting seats 71; and a flipping shaft sector gear member 73 is fixedly sleeved at the middle position of the length direction of the aforementioned flipping shaft 72, and a pair of sector gear member positioning brackets 53 are also formed on the aforementioned extending leg support plate 5 and at positions corresponding to the flipping shaft sector gear member 73, the flipping shaft sector gear member 73 is fitted and installed between the two sector gear member positioning brackets 53 and can reciprocate, and the shaft body of the aforementioned flipping shaft 72 passes through the two sector gear member positioning brackets 53 and is in rotational cooperation with them, and the flipping drive gear block 85 of the aforementioned flipping drive mechanism 8 passes through the plate body of the extending leg support plate 5 and extends into the space between the two sector gear member positioning brackets 53, and the flipping drive gear block 85 is in meshing with the aforementioned flipping shaft sector gear member 73, and the flipping drive gear block 85 can drive the aforementioned flipping shaft sector gear member 73 to rotate and further drive the aforementioned flipping shaft 72 and the flipping footrest 7 body to perform a flipping action.

[0039] Please continue to refer toFigures 1 to 5 , briefly describe the working principle of the technical solution provided by the present utility model: When the multi-directional leg rest device is installed, first, the mounting bracket unit 1 is fixedly connected to the frame structure of the vehicle seat. Then, the telescopic power mechanism 26 is connected to the driving rod 21. Subsequently, the extension leg rest plate 5 with the extension driving unit 6 and the flipping footrest 8 is connected to the supporting frame plate 3 and is in sliding fit therewith. After that, the outer housing 4 is fixedly installed on the supporting frame plate 3. Finally, the telescopic power mechanism 26, the extension driving unit 6, and the flipping driving mechanism 8 are all electrically connected to the leg rest control unit (not shown in the figure), thus completing the overall installation of the aforementioned driving device 4. The telescopic power mechanism 26 is integrally received at a lower side position of the mounting bracket unit 1 without occupying extra space. The extension driving unit 6 and the flipping driving mechanism 8 can also be built into the supporting frame plate 3, thus greatly simplifying the installation structure of the leg rest device. At the same time, the combination is stable, the installation is simple, and the assembly efficiency is high. When a passenger needs to extend and open the leg rest device to obtain the most comfortable riding experience, please refer to Figure 5 , first, the passenger can control the aforementioned telescopic power mechanism 26 to act by operating the leg rest control unit, so that the extension driving screw I 263 moves and drives the driving rod 21 to act. At this time, the aforementioned power arm 22 starts to rotate in a direction away from the mounting bracket unit 1 under the action of the driving rod 21. The supporting frame plate 3, the outer housing 4, the extension leg rest plate 5, and the flipping footrest 7 start to unfold under the combined action of the power arm connecting rod 23, the adjusting connecting rod 24, and the leg rest connecting rod 25, thus completing the unfolding action of the leg rest device. At this time, the passenger can control and adjust the leg rest control unit, so as to realize the adjustment control and locking of the supporting frame plate 3, and adjust the supporting frame plate 3 to a position that the passenger is satisfied and comfortable with. Further, the passenger operates the leg rest control unit again, so that the aforementioned extension driving unit 6 works. At this time, the extension driving motor II 61 drives the extension driving screw II 63 to move through the transmission of the extension driving transmission box 62. Then, the extension driving screw II 63 realizes the extension action of the scissor link assembly 64, so that the scissor link assembly 64 drives the extension leg rest plate 5 and the flipping footrest 7 to move downward and move out of the outer housing 4. At this time, the extension leg rest plate 5 can effectively support the lower part of the passenger's calf. When the extension leg rest plate 5 extends to a preset position, the aforementioned flipping driving mechanism 8 is controlled to work by operating the leg rest control unit. The flipping driving motor 81 controls the flipping driving screw 83 to move through the flipping driving transmission box 82, so as to realize the rotation of the flipping driving gear block 85. Subsequently, the flipping driving gear 85 can drive the rotating shaft sector gear member 73 to rotate, and further drive the aforementioned rotating shaft 72 and the flipping footrest 7 body to flip outward. At this time, the flipping footrest 7 can be used for the human foot to step on, effectively relieving foot fatigue and further improving the comfort of use.

[0040] It should be noted that the above embodiments can be freely combined as needed. The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

[0041] In summary, the technical solution provided by the present invention makes up for the deficiencies in the existing technology, successfully completes the invention task, and faithfully realizes the technical effects described by the applicant in the above technical effect column.

Claims

1. A multi-directional leg support device for a vehicle seat, comprising a mounting bracket unit (1), the mounting bracket unit (1) being fixedly connected to a vehicle seat frame; a telescopic link assembly (2), the telescopic link assembly (2) being hinged to the mounting bracket unit (1), and the telescopic link assembly (2) being capable of reciprocating telescopic motion; a supporting frame plate (3), the supporting frame plate (3) being connected to a side position of the telescopic link assembly (2) away from the mounting bracket unit (1), and the telescopic link assembly (2) being capable of driving the supporting frame plate (3) to move forward and backward; characterized in that: Also includes: An outer cover shell (4), the outer cover shell (4) is fixedly mounted on the supporting frame plate (3), and a receiving space (41) is formed between the outer cover shell (4) and the supporting frame plate (3); an extension leg support plate (5), the extension leg support plate (5) is slidably connected to a side surface of the supporting frame plate (3) opposite to the telescopic connecting rod assembly (2), and the extension leg support plate (5) is arranged in the receiving space (41) between the outer cover shell (4) and the supporting frame plate (3), and the extension leg support plate (5) can reciprocate up and down relative to the supporting frame plate (3) and extend out of the receiving space (41); an extension drive unit (6), the extension drive unit (6) A unit (6) is installed on the supporting frame plate (3), and the extension drive unit (6) can drive the extension leg support plate (5) to move; a flip foot pedal (7), the flip foot pedal (7) is rotatably connected to the lower position of the side surface of the extension leg support plate (5) opposite to the telescopic connecting rod assembly (2), and the flip foot pedal (7) can rotate relative to the extension leg support plate (5); a flip drive mechanism (8), the flip drive mechanism (8) is installed at the connection between the extension leg support plate (5) and the flip foot pedal (7), and the flip drive mechanism (8) is used to drive the flip foot pedal (7) to flip, i.e., to extend and retract.

2. A multi-directional leg support device for a vehicle seat according to claim 1, characterized in that: The mounting bracket unit (1) comprises a pair of connection plates (11) arranged in mirror symmetry, a reinforcing crossbeam (12) arranged in a horizontal direction is connected between the two connection plates (11), and a plurality of connection plate fixing holes (111) for achieving fixed connection with a vehicle seat frame are respectively formed on the two connection plates (11).

3. A multi-directional leg support device for a vehicle seat according to claim 2, characterized in that: The telescopic connecting rod assembly (2) further comprises a driving rod (21), a pair of power arms (22), a pair of power arm connecting rods (23), a pair of adjusting connecting rods (24) and a pair of leg support connecting rods (25); wherein the two power arms (22) are arranged opposite to each other and are respectively hinged to their corresponding connecting plates (11), and the driving rod (21) is arranged between the two power arms (22) and is positioned at an end position close to the upper part of the power arm (22) and the connecting plate (11), and the two power arm connecting rods (23) are respectively hinged to their corresponding power arms ( 22) are cross-stacked and hinged in the middle, the lower ends of the two adjusting links (24) are respectively hinged to the lower ends of the corresponding power arm links (23), and the upper ends of the two adjusting links (24) are respectively hinged to the lower parts of the corresponding connecting plates (11), the lower ends of the two leg support links (25) are respectively hinged to the lower ends of the corresponding power arms (22), and the extension leg support plate (5) is positioned and connected at the upper ends of the two leg support links (25) and the two power arm links (23).

4. The multi-directional leg support device for a vehicle seat according to claim 3, characterized in that: The telescopic connecting rod assembly (2) further comprises a telescopic power mechanism (26), the telescopic power mechanism (26) comprising an extension drive motor I (261), a worm gear device (262) and an extension drive screw I (263); wherein the worm gear device (262) is fixedly mounted on the reinforcing crossbeam (12) of the mounting bracket unit (1) via a mounting plate, and the outer housing of the extension drive motor I (261) is fixedly connected to the outer housing of the worm gear device (262), and the extension drive motor I (2 The output end of the extension drive screw rod (261) is connected to the transmission component inside the worm gear device (262), and the extension drive screw rod I (263) penetrates into the worm gear device (262) and is connected to the transmission component therewith. One end of the extension drive screw rod I (263) in the length direction is connected to the drive rod (21) of the telescopic connecting rod assembly (2), and the extension drive screw rod I (263) can drive the telescopic connecting rod assembly (2) to extend or retract the extension leg support plate (5) and the flip foot pedal (7).

5. The multi-directional leg support device for a vehicle seat according to claim 1, characterized in that: A supporting frame plate side matching frame (31) is provided at the left and right end edges of the supporting frame plate (3), and an outer cover shell connecting plate (42) is formed at the left and right end edges of the outer cover shell (4) facing the supporting frame plate (3). The two outer cover shell connecting plates (42) are respectively fixedly connected to the corresponding supporting frame plate side matching frames (31), so that the outer cover shell (4) is fixedly mounted on the supporting frame plate (3).

6. The multi-directional leg support device for a vehicle seat according to claim 1, characterized in that: A leg extension support plate guide plate (51) is formed at the edge positions of the left and right ends of the leg extension support plate (5), and a pair of supporting frame plate sliding rails (32) are fixedly installed on the side surface of the supporting frame plate (3) facing the leg extension support plate (5). The two leg extension support plate guide plates (51) are respectively slidably connected to their corresponding supporting frame plate sliding rails (32) and can slide along the supporting frame plate sliding rails (32), thereby allowing the leg extension support plate (5) to slide back and forth on the supporting frame plate (3).

7. The multi-directional leg support device for a vehicle seat according to claim 1, characterized in that: The extension drive unit (6) includes an extension drive motor II (61), an extension drive transmission box (62), an extension drive screw II (63) and a scissor-type connecting rod assembly (64); wherein the extension drive motor II (61) is fixedly mounted to the bottom position of the side surface of the supporting frame plate (3) opposite to the telescopic connecting rod assembly (2), the extension drive transmission box (62) is connected to the output end of the extension drive motor II (61) and is positioned at the lower position of the extension leg support plate (5), and the extension drive transmission box (62) is connected to the extension drive motor II (61) to achieve transmission connection, and the extension drive The extension drive screw II (63) passes through the extension drive transmission box (62) and realizes transmission connection therewith, the length direction of the extension drive screw II (63) is kept parallel to the extension leg support plate (5), and the extension drive transmission box (62) can drive the extension drive screw II (63) to reciprocate along its length direction; the scissor-type connecting rod assembly (64) is arranged on the side surface of the supporting frame plate (3) opposite to the telescopic connecting rod assembly (2), and the scissor-type connecting rod assembly (64) is connected to the extension leg support plate (5) and can drive the extension leg support plate (5) to move, and the scissor-type connecting rod assembly (64) is arranged on the side surface of the supporting frame plate (3) opposite to the telescopic connecting rod assembly (2), and the scissor-type connecting rod assembly (64) is connected to the extension leg support plate (5) and can drive the extension leg support plate (5) to move. 4) comprises at least two groups of connecting rod groups (641) connected in sequence from top to bottom, wherein the connecting rod group (641) is formed by two cross connecting rods (6411) crossing in an X-shaped structure, the centers of the two cross connecting rods (6411) are hinged by a cross connecting rod rotating shaft (6412), and adjacent connecting rod groups (641) are hinged by a connecting rod hinge shaft (642), a scissor connecting rod connecting column (643) is also installed on the top connection of the two cross connecting rods (6411) at the top of the scissor connecting rod assembly (64), and an extension drive screw connecting seat (631) is also connected to the top end of the extension drive screw II (63), The scissor-type connecting rod connecting column (643) extends into the extension drive screw connecting seat (631) and is fixedly connected thereto, so that the extension drive screw II (63) and the scissor-type connecting rod assembly (64) are connected in transmission, and the extension drive screw II (63) can drive the scissor-type connecting rod assembly (64) to achieve the extension and storage action, and an extension leg support plate connecting seat (644) is also installed on the bottom connection of the two cross links (6411) at the bottom of the scissor-type connecting rod assembly (64), and the extension leg support plate (5) is connected to the scissor-type connecting rod assembly (64) through the extension leg support plate connecting seat (644).

8. The multi-directional leg support device for a vehicle seat according to claim 1, characterized in that: A leg extension support plate receiving groove (52) is formed on the bottom portion of the leg extension support plate (5), the shape of which is adapted to the shape of the plate body of the flip foot pedal (7), and when the flip foot pedal (7) is in a stored state, it is cooperatively installed in the leg extension support plate receiving groove (52), and the bottom portion of the flip foot pedal (7) is rotatably connected to the bottom portion of the leg extension support plate (5).

9. The multi-directional leg support device for a vehicle seat according to claim 8, characterized in that: The flipping drive mechanism (8) comprises a flipping drive motor (81), a flipping drive transmission box (82), a flipping drive screw (83), a pair of connecting frames (84) and a flipping drive gear block (85); wherein the flipping drive mechanism (8) is arranged as a whole on a side surface of the extending leg support plate (5) opposite to the telescopic connecting rod assembly (2), the flipping drive motor (81) is fixedly mounted on the extending leg support plate (5), and the flipping drive transmission box (82) is connected to the output end of the flipping drive motor (81), and the two connecting frames (84) are arranged at intervals and are also fixedly connected to the extending leg support plate (5), and the flipping drive transmission box (82) is installed on one of the connecting frames (84), and the flipping drive transmission box (82) and the flipping drive motor (81) are realized. Transmission connection, the flip driving screw (83) passes through the flip driving transmission box (82) and realizes transmission connection therewith, and the flip driving transmission box (82) can drive the flip driving screw (83) to reciprocate along its length direction, and a flip driving screw connecting head (831) is also connected to one end of the flip driving screw (83) in the length direction, and the flip driving gear block (85) is rotatably connected between the two connecting frames (84), and the flip driving gear block (85) passes through the extension leg support plate (5) plate body, and the flip driving gear block (85) and the flip driving screw connecting head (831) are connected to each other through a connecting rod. During the reciprocating motion of the flip driving screw (83), it can drive the flip driving gear block (85) to rotate through the flip driving screw connecting head (831).

10. The multi-directional leg support device for a vehicle seat according to claim 9, characterized in that: A plurality of flip shaft connection seats (71) are convexly formed on the bottom portion of the flip foot pedal (7), and the plurality of flip shaft connection seats (71) are extended toward the leg extension support plate (5), and a flip shaft (72) is also mounted on the plurality of flip shaft connection seats (71), and the flip shaft (72) is extended along the length direction of the flip foot pedal (7) and passes through the plurality of flip shaft connection seats (71); and a flip shaft fan-shaped gear member (73) is fixedly mounted at the middle position in the length direction of the flip shaft (72), and a pair of fan-shaped gear member positioning brackets (53) are also formed on the leg extension support plate (5) and at the position corresponding to the flip shaft fan-shaped gear member (73), and the flip shaft fan-shaped gear member (73) is fixedly mounted on the middle position in the length direction of the flip shaft (72). The shaft sector gear member (73) is mounted between the two sector gear member positioning brackets (53) and is capable of reciprocating rotation, while the shaft body of the flip shaft (72) passes through the two sector gear member positioning brackets (53) and is rotationally matched therewith, and the flip driving gear block (85) of the flip driving mechanism (8) passes through the plate body of the stretching leg support plate (5) and penetrates into the space between the two sector gear member positioning brackets (53), and the flip driving gear block (85) is meshed with the flip shaft sector gear member (73), and the flip driving gear block (85) can drive the flip shaft sector gear member (73) to rotate and further drive the flip shaft (72) and the flip foot pedal (7) body to perform a flipping action.

Images