Leg support assembly, seat and vehicle

Abstract

The utility model relates to the technical field of leg supports, in particular to a leg support assembly, a seat and a vehicle, and aims at solving the problems that an existing leg support assembly is complex in structure, high in assembling and manufacturing cost and large in occupied space in the vehicle. In order to achieve the purpose, the leg support assembly comprises a leg support framework, a leg support panel and a telescopic mechanism, the leg support panel is slidably connected with the leg support framework, the leg support framework is rotatably arranged, and the telescopic mechanism is rotatably connected with the leg support panel; the telescopic mechanism is arranged to be capable of moving in a telescopic mode in the direction close to or away from the leg support framework, when the telescopic mechanism moves in the direction close to the leg support, the leg support framework is driven to rotate and unfold, and meanwhile the leg support panel is driven to slide and stretch out. And the telescopic mechanism drives the leg support framework to rotate and retract and drives the leg support panel to slide and retract simultaneously. According to the utility model, the unfolding of the leg support framework, the extension of the leg support panel and the reverse folding and retracting actions can be realized only by one set of telescopic mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to leg rest technical field, specifically provide a leg rest assembly, seat and vehicle. BACKGROUND

[0002] In the current automobile seat leg rest structure design and application, there is a more significant problem. The traditional leg rest structure design is relatively complex, and the unfolding action of the leg rest and the elongation action of the panel are respectively controlled by two independent motors and transmission components to control the leg rest unfolding and the panel elongation. This double drive system mode not only increases the complexity of the power system, but also leads to a series of derivative problems.

[0003] Because two sets of driving systems need to be installed, a large number of fasteners need to be used. This not only increases the material cost, but also requires precise installation and fastening of numerous fasteners during assembly, greatly increasing the assembly difficulty and time cost, making the entire assembly process complicated.

[0004] At the same time, due to the existence of the motor, the transmission component and a large number of fasteners, the volume of the entire leg rest assembly becomes larger, and the weight also increases accordingly. This not only puts great pressure on the limited space resources inside the automobile seat, and has high requirements for the space arrangement of the leg rest, but also the heavy leg rest assembly also increases the overall weight of the automobile, indirectly affecting the energy consumption and control performance of the automobile.

[0005] Correspondingly, the field needs a new leg rest assembly to solve the problems of complex existing leg rest structure, high assembly and manufacturing cost, and large occupation of vehicle interior space. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the above technical problems, that is, solving the problems of complex existing leg rest structure, high assembly and manufacturing cost, and large occupation of vehicle interior space.

[0007] In a first aspect, the utility model provides a leg rest assembly, which comprises a leg rest framework, a leg rest panel and a telescopic mechanism.

[0008] The leg rest panel and the leg rest framework are slidably connected, the leg rest framework is rotatably arranged, and the telescopic mechanism and the leg rest panel are rotatably connected.

[0009] The telescopic mechanism is arranged to be able to move in the direction of approaching or moving away from the leg rest framework, when the telescopic mechanism moves in the direction of approaching the leg rest framework, the telescopic mechanism drives the leg rest framework to rotate and unfold, and drives the leg rest panel to slide and extend, when the telescopic mechanism moves in the direction of moving away from the leg rest framework, the telescopic mechanism drives the leg rest framework to rotate and fold, and drives the leg rest panel to slide and retract.

[0010] In the case of adopting the technical scheme, the leg support assembly only needs one set of telescopic mechanism to realize the rotation and expansion of the leg support framework and the elongation of the leg support panel, and the reverse folding and contraction actions. Compared with the traditional mode of driving the leg support framework and the leg support panel by multiple sets of driving systems respectively, the structure is greatly simplified, the number of parts is reduced, the overall weight and cost are reduced, and the space utilization is improved, so that the leg support can move efficiently in limited space.

[0011] In the optional technical scheme of the leg support assembly, the telescopic mechanism includes a lead screw motor and a lead screw connected in transmission, the lead screw motor drives the lead screw to rotate and move in the axial direction at the same time when the lead screw motor rotates forward or reversely, and the lead screw is rotationally connected with the leg support panel.

[0012] In the case of adopting the technical scheme, the leg support framework and the leg support panel are driven by the telescopic movement of the lead screw relative to the lead screw motor.

[0013] In the optional technical scheme of the leg support assembly, the telescopic mechanism includes a fixed slide rail and a movable slide rail, the movable slide rail is slidably arranged on the fixed slide rail, the lead screw is rotationally connected with the movable slide rail, and the movable slide rail is rotationally connected with the leg support panel.

[0014] In the case of adopting the technical scheme, the movable slide rail slides on the fixed slide rail, and the fixed slide rail provides stable support and guiding effect for the movable slide rail, so that the movement process is more stable and smooth, and the possibility of shaking and deviation is reduced. Moreover, the connection mode disperses the stress in the movement process, avoids the stress concentration problem caused by direct connection, and enhances the reliability and durability of the entire leg support assembly.

[0015] In the optional technical scheme of the leg support assembly, a slide rail is arranged on the leg support framework, and a sliding part matched with the slide rail is arranged on the leg support panel, so that the leg support panel slides along the slide rail.

[0016] In the case of adopting the technical scheme, the slide rail guides the leg support panel and keeps the movement stable.

[0017] In the optional technical scheme of the leg support assembly, a limiting column is arranged on the leg support framework, a sliding groove hole matched with the limiting column for sliding is arranged on the leg support panel, one end of the limiting column is provided with a limiting step, and the limiting step is used to limit the leg support panel from coming out of the limiting column.

[0018] In the case of adopting the technical scheme, the stability of the leg support panel during sliding is further maintained, and the sliding groove hole end and the limiting column cooperate to maintain the set position of the leg support panel after the leg support panel slides to the set position.

[0019] In the alternative technical solution of the leg rest assembly, a bushing is sleeved on the limiting column, and the bushing is located between the limiting column and the sliding slot hole.

[0020] In the case of using the above technical solution, the bushing helps to reduce noise and abnormal sound generated by friction between the limiting column and the leg rest panel when the leg rest panel slides.

[0021] In the alternative technical solution of the leg rest assembly, the limiting column is a stepped bolt.

[0022] In the case of using the above technical solution, general components are used, and manufacturing cost is reduced.

[0023] In the alternative technical solution of the leg rest assembly, the telescopic mechanism includes a motor, a lead screw and a lead screw slider, the motor and the lead screw are rotationally connected, the lead screw slider and the lead screw are drivingly connected, the lead screw slider moves axially along the lead screw when the motor drives the lead screw to rotate forward or reversely, and the lead screw slider and the leg rest panel are rotationally connected; or, the telescopic mechanism includes a motor, a gear and a rack, the motor and the gear are rotationally connected, the gear and the rack are engaged, the rack moves linearly when the motor drives the gear to rotate forward or reversely, and the rack and the leg rest panel are rotationally connected.

[0024] In the case of using the above technical solution, the accuracy and stability of the lead screw slider transmission are utilized, and the moving distance and position of the leg rest panel can be controlled more accurately. The high efficiency and rapid responsiveness of the gear and rack transmission are utilized, and the leg rest can be rapidly unfolded or folded, so as to meet the demand of users for rapid adjustment of the leg rest.

[0025] In the second aspect, the utility model also provides a seat, the seat includes the leg rest assembly of any one of the above technical solutions.

[0026] In the third aspect, the utility model also provides a vehicle, the vehicle includes the leg rest assembly of any one of the above technical solutions.

[0027] Those skilled in the art can understand that the leg rest assembly of the utility model includes a leg rest framework, a leg rest panel and a telescopic mechanism.

[0028] The leg rest panel and the leg rest framework are slidably connected, the leg rest framework is rotationally arranged, and the telescopic mechanism and the leg rest panel are rotationally connected.

[0029] The telescopic mechanism is arranged to be capable of telescopic movement towards the direction of approaching or moving away from the leg support framework, when the telescopic mechanism moves towards the direction of approaching the leg support framework, the telescopic mechanism drives the leg support framework to rotate and expand while driving the leg support panel to slide and extend, and when the telescopic mechanism moves towards the direction of moving away from the leg support framework, the telescopic mechanism drives the leg support framework to rotate and fold while driving the leg support panel to slide and retract.

[0030] In the case of adopting the technical scheme, the leg support assembly only needs one set of telescopic mechanism to realize the rotation and expansion of the leg support framework and the extension of the leg support panel, and the reverse folding and retraction actions. BRIEF DESCRIPTION OF DRAWINGS

[0031] The preferred embodiments of the utility model will be described below with reference to the drawings, in which:

[0032] Figure 1 is the perspective view of the leg support assembly of the utility model;

[0033] Figure 2 is the exploded structure view of the leg support assembly of the utility model;

[0034] Figure 3 is the side view when the leg support assembly of the utility model is folded;

[0035] Figure 4 is the front view when the leg support assembly of the utility model is folded;

[0036] Figure 5 is Figure 4 the sectional view at A-A in Fig. 1;

[0037] Figure 6 is the side view when the leg support assembly of the utility model is unfolded;

[0038] Figure 7 is the front view when the leg support assembly of the utility model is unfolded;

[0039] Figure 8 is Figure 7 the sectional view at B-B in Fig. 2;

[0040] Figure 9 is Figure 8 the enlarged view at I in Fig. 3;

[0041] Figure 10 is the assembly schematic view between the movable slide rail and the fixed slide rail of the leg support assembly of the utility model;

[0042] Figure 11 is a schematic view of another embodiment of the telescopic mechanism of the utility model;

[0043] Figure 12 is a schematic view of another embodiment of the telescopic mechanism of the utility model.

[0044] List of reference signs:

[0045] 1, leg rest frame; 11, rotating part;

[0046] 2, leg rest panel; 21, sliding groove hole; 211, first end; 212, second end;

[0047] 3, telescopic structure; 3, telescopic mechanism; 31, screw motor; 32, screw; 33, fixed sliding rail; 34, movable sliding rail;

[0048] 4, sliding rail;

[0049] 51, limiting column; 52, limiting step; 53, nut;

[0050] 6, bushing;

[0051] 71, motor support; 72, screw fixing support;

[0052] 81, gear; 82, rack;

[0053] 91, motor; 92, screw block; 93, support seat. DETAILED DESCRIPTION

[0054] The preferred embodiments of the utility model are described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the utility model, and are not intended to limit the protection scope of the utility model. Those skilled in the art can adjust them as needed in order to adapt to specific application occasions. For example, although the leg rest assembly of the present application is described in combination with a vehicle seat, this is not restrictive, and the leg rest assembly of the utility model can also be applied to other seats, such as office seats, deck chairs, etc. The leg rest assembly can also be applied to other devices that need leg rest other than seats, such as sofa beds, hospital beds, massage beds, etc.

[0055] It should be noted that in the description of the utility model, the terms "upper", "lower", "inner", "outer" and the like indicate the direction or positional relationship of the terms, which is based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0056] In addition, it needs to be explained that, in the description of the utility model, unless another explicit provision and limitation, the term "mounting", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, can be direct connection, also can be indirectly connected through the intermediate medium, can be two elements inside the communication. For the person skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0057] To solve the problems of complex structure, high assembly and manufacturing cost and large space occupation of the existing leg support assembly, the utility model provides a leg support assembly.

[0058] With reference to Figures 1 to 3 The leg support assembly of the utility model comprises a leg support framework 1, a leg support panel 2 and a telescopic mechanism 3.

[0059] The leg support framework 1 is rotatably arranged, and the leg support panel 2 is slidably connected with the leg support framework 1, that is, the leg support panel 2 is connected with the leg support framework 1 and can slide on the leg support framework 1. Further, the telescopic mechanism 3 is rotatably connected with the leg support panel 2. The telescopic mechanism 3 is arranged to be capable of telescopic movement towards the direction close to or away from the leg support framework 1.

[0060] When the telescopic mechanism 3 moves towards the direction close to the leg support framework 1, the telescopic mechanism 3 drives the leg support framework 1 to rotate and expand at the same time and drives the leg support panel 2 to slide and extend. When the telescopic mechanism 3 moves towards the direction away from the leg support framework 1, the telescopic mechanism 3 drives the leg support framework 1 to rotate and fold at the same time and drives the leg support panel 2 to slide and retract.

[0061] The above-mentioned setting mode has the advantages that: the leg support assembly of the utility model only needs one set of telescopic mechanism 3 to realize the rotation and expansion of the leg support framework 1 and the extension of the leg support panel 2 at the same time, and the reverse folding and retracting actions. Compared with the traditional mode that multiple sets of driving systems respectively drive the leg support framework and the leg support panel, the structure is greatly simplified, the number of parts is reduced, the overall weight and cost are reduced, and the space utilization is improved, so that the leg support can efficiently move in the limited space.

[0062] The telescopic mechanism 3 and the leg support panel 2 are rotatably connected, the leg support panel 2 slides relative to the leg support framework 1 while the leg support framework 1 is driven to rotate, and this ingenious connection mode ensures that the movement of the leg support framework 1 and the leg support panel 2 is coordinated with each other during the expansion and folding of the leg support. When the telescopic mechanism 3 is telescopically moved, the leg support framework 1 is stably driven to rotate and the leg support panel 2 is stably driven to slide, avoiding the jamming or interference phenomenon caused by the asynchronous movement of each part, and providing the user with a more comfortable and reliable use experience.

[0063] In addition, the single driving system makes the operation more convenient, and the user only needs to control the operation of one mechanism to easily realize all functions of the leg rest.

[0064] In a possible implementation, the utility model provides a vehicle seat (not shown in the figure), the seat includes seat framework and leg rest assembly.

[0065] Optionally, the seat framework includes seat cushion framework, and the leg rest framework 1 is rotatably mounted on the seat cushion framework. Figure 1 Optionally, the leg rest assembly is provided with a rotating part 11 fixedly arranged on the seat cushion framework, and the leg rest framework 1 is connected with the rotating part 11, so that the leg rest framework 1 is rotated around the rotating part 11.The rotating part 11 can be a rotating shaft, a pin shaft or a step bolt, and the rotating part 11 can be set by the person skilled in the art as required, as long as the rotating part 11 can realize the rotation of the leg rest framework 1 around its axis, and all fall within the protection scope of the utility model.

[0066] Of course, the mounting position of the leg rest framework 1 is not limited to the seat framework, and the leg rest framework 1 can also be arranged on other parts of the seat, for example, the leg rest framework 1 is connected with the seat leg, and the like.Through this way, the leg rest framework 1 can realize the leg rest function by means of the stable support of the seat leg.

[0067] Optionally, the seat framework includes seat cushion framework, and the leg rest framework 1 is rotatably mounted on the seat cushion framework. Figure 2 And Figure 3 Further, the telescopic mechanism 3 includes a lead screw motor 31 and a lead screw 32.The lead screw motor 31 is fixed to the seat framework by means of a motor support 71.The lead screw motor 31 and the lead screw 32 are drivingly connected to jointly constitute an electric lead screw structure.When the lead screw motor 31 rotates forward, the lead screw motor 31 drives the lead screw 32 to rotate and moves along its axial direction to the direction of approaching the leg rest framework 1, and when the lead screw motor 31 reverses, the lead screw motor 31 drives the lead screw 32 to move away from the leg rest framework 1.Of course, the utility model does not make any limitation on the rotation direction of the lead screw motor 31, and the person skilled in the art can set the forward and reverse rotation control of the lead screw motor 31 according to the functional requirements, and all fall within the protection scope of the utility model.

[0068] Specifically, the screw motor 31 is internally provided with a screw nut matched with the screw rod 32, the inner thread of the screw nut is engaged with the outer thread of the screw rod 32 to form a screw pair. After the screw motor 31 is started, the screw pair composed of the screw nut and the screw rod 32 converts the rotary motion of the screw motor 31 into the linear motion of the screw rod 32, and the screw rod 32 moves forward or backward in the axial direction.

[0069] However, it should be noted that although the electric screw structure is described in detail, the purpose is only to clearly describe the movement mode, and is not limited to the specific structure of the electric screw. In actual application and design, the structure of the electric screw can be set according to actual needs by those skilled in the art, regardless of the structure form, as long as the screw rod 32 can realize the function of telescopic movement under the driving of the screw motor 31, and all fall within the protection scope of the utility model.

[0070] Referring to Figures 3 to 5 Further, the leg support assembly further comprises a sliding rail 4 and a limiting column 51. The sliding rail 4 is arranged on the leg support framework 1, and the leg support panel 2 is provided with a sliding part (not shown in the figure) matched with the sliding rail 4 and used for realizing the sliding function. The leg support framework 1 and the leg support panel 2 are slidingly connected through the sliding rail 4, so that when the leg support panel 2 slides, the accuracy of the movement direction can be ensured, and the stability of the leg support panel 2 during the process can be effectively maintained.

[0071] Referring to Figure 9 One end of the limiting column 51 is provided with a limiting step 52, and the leg support panel 2 is provided with a sliding groove hole 21. The end of the limiting column 51 without the limiting step 52 penetrates into the sliding groove hole 21 and passes through the sliding rail 4 and the leg support framework 1, and is fixedly connected with the leg support framework 1. The limiting step 52 is used for limiting the leg support panel 2 from sliding off the end of the limiting column 51.

[0072] Further, in order to optimize the use performance of the leg support assembly, a bushing 6 is sleeved on the limiting column 51. The bushing 6 helps to reduce the noise and abnormal sound generated by the friction between the limiting column 51 and the leg support panel 2 when the leg support panel 2 slides.

[0073] The specific movement process of the leg support assembly is as follows:

[0074] Referring to Figures 6 to 9 When the screw rod 32 moves towards the leg support panel 2, the leg support framework 1 rotates and expands, and the leg support panel 2 slides downward. In this process, the sliding groove hole 21 slides along the limiting column 51. With the sliding, when the limiting column 51 abuts against the first end 211 of the sliding groove hole 21, it means that the leg support panel 2 is elongated to the maximum length, and can provide the maximum leg support for the user.

[0075] Referring to Figures 3 to 5When the screw rod 32 moves in the direction away from the leg rest panel 2, the leg rest frame 1 rotates to fold, and the leg rest panel 2 slides upward. When the limiting column 51 abuts against the second end 212 of the sliding groove hole 21, the leg rest panel 2 completes the folding action and is accommodated on the leg rest frame 1.

[0076] The limiting column 51 can be a stepped bolt as an optional embodiment, which is locked on the leg rest frame 1 through the nut 53 to ensure stable connection.

[0077] However, it should be noted that the specific structure of the limiting column 51 is not limited in the utility model, and the limiting column 51 can be designed as a stepped bolt, and other structural forms can also be used. For example, the setting position of the limiting step 52 can be adjusted flexibly, which can be set on the end of the limiting column 51 or on the column body of the limiting column 51, or the limiting column 51 can not be provided with threads, but is connected with the leg rest frame 1 through welding, buckle clamping and other ways. The structure of the limiting column 51 can be set by the person skilled in the art according to actual needs, and falls within the protection scope of the utility model.

[0078] Further, referring to Figure 2 The leg rest assembly further comprises a screw rod fixing support 72. The screw rod fixing support 72 is fixed on the leg rest panel 2 and is rotationally connected with the end of the screw rod 32.

[0079] It should be noted that the telescopic mechanism 3 is not limited to the above movable screw rod structure, and as long as the telescopic mechanism 3 can achieve the function of telescopic movement, the action of unfolding and folding the leg rest can be realized, and the specific structure of the telescopic mechanism 3 can be set flexibly by the person skilled in the art according to actual needs, as long as it can meet the normal unfolding and folding function of the leg rest, and falls within the protection scope of the utility model.

[0080] For example, referring to Figure 10In order to further optimize the performance of the leg rest assembly, the telescopic mechanism 3 introduces a fixed slide rail 33 and a movable slide rail 34. The movable slide rail 34 is slidably arranged on the fixed slide rail 33, and the lead screw 32 is not directly rotationally connected with the leg rest panel 2, but is rotationally arranged on the movable slide rail 34, and the movable slide rail 34 is rotationally connected with the leg rest panel 2. When the lead screw 32 moves axially, the lead screw 32 drives the movable slide rail 34 to slide along the fixed slide rail 33, and the movable slide rail 44 drives the leg rest panel 2 to move, thereby realizing the unfolding and folding actions of the leg rest assembly. By using this way of driving the leg rest assembly to move through the movable slide rail 34, the stability of the structure can be effectively improved. This is because the movable slide rail 34 slides on the fixed slide rail 33, which provides stable support and guidance for it, making the movement process more stable and smooth, reducing the possibility of shaking and deviation. Moreover, this connection mode disperses the stress in the movement process, avoiding the stress concentration problem that may be caused by direct connection, thereby enhancing the reliability and durability of the entire leg rest assembly.

[0081] In addition to the structure mentioned above, the telescopic mechanism 3 can have other embodiments, and the following will illustrate other embodiments of the telescopic mechanism 3.

[0082] Referring to Figure 11 In another possible embodiment, the telescopic mechanism 3 includes a motor 91, a lead screw 32, a lead screw block 92 and a support seat 93. The support seat 93 and the motor 91 are both fixed on the seat framework, providing a stable support basis for the entire telescopic mechanism 3.

[0083] The lead screw 32 is rotationally arranged on the support seat 93 to ensure that the lead screw 32 can rotate relative to the support seat 93. The motor 91 is rotationally connected with the lead screw 32, and the motor 91 drives the lead screw 32 to rotate after being started. The lead screw block 92 is provided with a lead screw nut matched with the lead screw inside, and the lead screw nut and the lead screw 32 are engaged, so that when the lead screw 32 rotates, the lead screw block 92 will move reciprocatingly along the axial direction of the lead screw 32. The lead screw block 92 is rotationally connected with the leg rest panel 2, and the telescopic movement of the lead screw block 92 can drive the leg rest panel 2 to move, thereby realizing the unfolding and folding functions of the leg rest. This structure design utilizes the accuracy and stability of the lead screw block transmission, and can more accurately control the moving distance and position of the leg rest panel 2.

[0084] Referring to Figure 12In another possible implementation, the telescopic mechanism 3 comprises a motor 91, a gear 81 and a rack 82. The motor 91 is also fixed on the seat framework, providing a power source for the whole mechanism. The motor 91 and the gear 81 are rotationally connected, and when the motor 91 rotates forward or reversely, the gear 81 can be driven to rotate forward or reversely. The gear 81 and the rack 82 are engaged, and the rotation of the gear 81 is converted into the linear telescopic movement of the rack 82. The rack 82 and the leg support panel 2 are rotationally connected, and the linear movement of the rack 82 drives the leg support panel 2 to move, completing the unfolding and folding operation of the leg support. This structure utilizes the high efficiency and rapid response of the gear and rack transmission, and can make the leg support quickly unfold or fold, meeting the user's demand for rapid adjustment of the leg support.

[0085] In summary, the seat leg support assembly of the utility model only needs to drive a set of telescopic mechanism 3 to synchronously achieve the rotation and unfolding of the leg support and the forward extension of the leg support panel 2. Compared with the traditional complex multi-component linkage structure, the design greatly simplifies the overall structure, effectively reduces the number of components and assembly complexity, thereby improving the stability and reliability of the structure, and the user can realize multiple functions without complicated operation, improving the use experience.

[0086] As described in the first paragraph of this section, the above-mentioned implementation is only used to illustrate the principle of the utility model, and is not intended to limit the protection scope of the utility model. Under the condition of not deviating from the principle of the utility model, those skilled in the art can adjust the above-mentioned structure, so that the utility model can be applied to more specific application scenarios.

[0087] So far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Under the premise of not deviating from the principle of the utility model, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical scheme after the changes or replacements will fall within the protection scope of the utility model.

Claims

1. A leg support assembly, characterized in that, The leg support assembly includes a leg support frame (1), a leg support panel (2), and a telescopic mechanism (3); The leg support panel (2) and the leg support frame (1) are slidably connected, the leg support frame (1) is rotatably set, and the telescopic mechanism (3) and the leg support panel (2) are rotatably connected. The telescopic mechanism (3) is configured to extend and retract in a direction toward or away from the leg support frame (1). When the telescopic mechanism (3) moves toward the leg support frame (1), the telescopic mechanism (3) causes the leg support frame (1) to rotate and unfold while simultaneously causing the leg support panel (2) to slide out. When the telescopic mechanism (3) moves away from the leg support frame (1), the telescopic mechanism (3) causes the leg support frame (1) to rotate and retract while simultaneously causing the leg support panel (2) to slide back.

2. The leg support assembly according to claim 1, characterized in that, The telescopic mechanism (3) includes a lead screw motor (31) and a lead screw (32) connected by transmission. When the lead screw motor (31) rotates in the forward or reverse direction, it drives the lead screw (32) to rotate while moving along its axial direction. The lead screw (32) and the leg support panel (2) are rotatably connected.

3. The leg support assembly according to claim 2, characterized in that, The telescopic mechanism (3) includes a fixed slide rail (33) and a movable slide rail (34). The movable slide rail (34) is slidably mounted on the fixed slide rail (33). The lead screw (32) is rotatably connected to the movable slide rail (34). The movable slide rail (34) is rotatably connected to the leg support panel (2).

4. The leg support assembly according to claim 1, characterized in that, The leg support frame (1) is provided with a slide rail (4), and the leg support panel (2) is provided with a sliding part that cooperates with the slide rail (4) so ​​that the leg support panel (2) slides along the slide rail (4).

5. The leg support assembly according to claim 4, characterized in that, The leg support frame (1) is provided with a limiting post (51), the leg support panel (2) is provided with a sliding groove hole (21) that cooperates with the limiting post (51), the limiting post (51) is provided with a limiting step (52), and the limiting step (52) is used to restrict the leg support panel (2) from coming out of the limiting post (51).

6. The leg support assembly according to claim 5, characterized in that, A bushing (6) is fitted on the limiting post (51), and the bushing (6) is located between the limiting post (51) and the sliding hole (21).

7. The leg support assembly according to claim 5, characterized in that, The limiting post (51) is a stepped bolt.

8. The leg support assembly according to claim 1, characterized in that, The telescopic mechanism (3) includes a motor (91), a lead screw (32), and a lead screw slider (91). The motor (91) and the lead screw (32) are rotatably connected, and the lead screw slider (91) and the lead screw (32) are drive-connected. When the motor (91) drives the lead screw (32) to rotate in the forward or reverse direction, the lead screw slider (91) moves telescopically along the axial direction of the lead screw (32). The lead screw slider (91) and the leg support panel (2) are rotatably connected. Alternatively, the telescopic mechanism (3) includes a motor (91), a gear (81), and a rack (82). The motor (91) and the gear (81) are rotatably connected, and the gear (81) and the rack (82) mesh. When the motor (91) drives the gear (81) to rotate in the forward or reverse direction, the rack (82) moves telescopically along a straight line. The rack (82) and the leg support panel (2) are rotatably connected.

9. A type of seat, characterized in that, The seat is provided with a leg support assembly as described in any one of claims 1-8.

10. A vehicle, characterized in that, The vehicle is equipped with a leg support assembly as described in any one of claims 1-8.

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