Leg rest mechanism, seat, and vehicle

Abstract

A leg rest mechanism, comprising: a base support (1), connected to a vehicle body floor of a vehicle; a supporting support (2), connected to the base support (1); a driving assembly (3), comprising a driving support (31) and a lifting structure (32) arranged on the driving support (31), wherein the driving support (31) is connected to the supporting support (2); a lifting support (4), rotatably connected to the driving support (31), wherein a transmission member (42) is provided on the lifting support (4), the transmission member (42) is rotatably connected to the lifting structure (32), and the lifting structure (32) drives the transmission member (42) such that the lifting support (4) rotates relative to the driving support (31); and a leg-rest carrier plate (5), arranged on the lifting support (4). The leg rest mechanism can achieve stable rotation of a leg rest, can save the space of the front portion of a seat, involves a simpler structure, and is suitable for rear-row seats of the vehicle. In addition, the present invention also relates to a seat and a vehicle.

Description

Leg rest mechanism, seat and vehicle

[0001] This application claims priority to Chinese Patent Application No. 202420859674.6, filed on April 23, 2024, entitled "Leg Support Mechanism, Seat and Vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of vehicle technology, specifically to a leg support mechanism, a seat, and a vehicle. Background Technology

[0003] With social development and the improvement of people's living standards, people have put forward higher requirements for the comfort of car seats, and need to further improve the functionality and comfort of seats, such as adding leg rests to support passengers' lower legs, so as to reduce the fatigue and discomfort caused by prolonged leg bending, thereby enhancing comfort.

[0004] In related technologies, the rear seats of some vehicles do not have independent frames and are mainly fixed to the vehicle floor by a rigid foam structure at the bottom of the seat cushion. However, due to structural strength limitations, the rigid foam structure cannot meet the requirements for stable rotation and extension of the leg rest. Therefore, when installing leg rests on rear seats without independent frames, the current leg rest mechanism occupies a large space and has a more complex structure.

[0005] Utility Model Content

[0006] To address the aforementioned technical problems, this disclosure provides a leg support mechanism, a seat, and a vehicle.

[0007] In a first aspect, this application discloses a leg support mechanism, comprising:

[0008] The base bracket is attached to the vehicle's floor.

[0009] A support bracket is connected to the base bracket;

[0010] A drive assembly includes a drive bracket and a lifting structure disposed on the drive bracket, the drive bracket being connected to the support bracket;

[0011] A lifting bracket is rotatably connected to the driving bracket. A transmission component is provided on the lifting bracket. The transmission component is rotatably connected to the lifting structure. The lifting structure drives the transmission component to make the lifting bracket rotate relative to the driving bracket.

[0012] The support plate frame is mounted on the lifting bracket.

[0013] Optionally, the leg support mechanism further includes an elastic element, one end of which is connected to the base bracket and the other end of which is connected to the lifting bracket;

[0014] When the lifting bracket rotates relative to the driving bracket and is lifted upward, it stretches the elastic element.

[0015] Optionally, the base support includes a left support, a right support, a base horizontal plate, and a base horizontal bar. The base horizontal plate is connected to the left support and the right support. Both the left support and the right support have support protrusions, and the base horizontal bar is connected to the two support protrusions.

[0016] The elastic element is connected to the base crossbar, and the support bracket is connected to the base crossbar.

[0017] Optionally, the drive bracket includes a left reinforcing plate, a right reinforcing plate, and a drive crossbar connected between the left and right reinforcing plates. Both the left and right reinforcing plates are connected to the support bracket, and the lifting structure is disposed on the drive crossbar.

[0018] Both the left and right reinforcing plates are inclined upward relative to the horizontal direction, and the lifting bracket is rotatably connected to the left and right reinforcing plates.

[0019] Optionally, the support bracket includes a left support plate and a right support plate, both of which are connected to the base bracket. The left support plate is connected to the left reinforcing plate and is stacked with the left reinforcing plate, and the right support plate is connected to the right reinforcing plate and is stacked with the right reinforcing plate.

[0020] Optionally, the support bracket further includes a support cross plate, which is connected to the right support plate and the left support plate, and the support cross plate is used to support the seat cushion of the seat.

[0021] Optionally, the support plate frame is slidably mounted on the lifting bracket;

[0022] The leg support mechanism further includes a sliding drive structure, which is disposed on the lifting bracket or the support plate frame to drive the support plate frame to slide relative to the lifting bracket.

[0023] Optionally, the sliding drive structure includes a first drive motor assembly, a first lead screw, and a slider. The first drive motor assembly is mounted on the support plate frame and connected to the first lead screw. The first lead screw extends along the sliding direction of the support plate frame. The slider is fixedly mounted on the lifting bracket and threadedly connected to the first lead screw.

[0024] In a second aspect, this application discloses a seat, including a seat cushion and a leg support mechanism provided in the first aspect. The seat cushion has a seat cushion portion and a leg support portion, the leg support portion is rotatable relative to the seat cushion portion, and the seat cushion portion is provided with a first slot.

[0025] The base bracket includes a base crossbar, and the support bracket includes a support plate. The support plate is located on the front side of the base crossbar in the front-back direction of the seat and above the base crossbar in the height direction of the seat. The base crossbar is engaged in the first slot. The support plate is supported at the corner of the seat cushion and the leg rest. The leg rest is connected to the support plate frame.

[0026] Optionally, the drive bracket includes a drive crossbar, which is located between the base crossbar and the support crossbar in the front-rear direction of the seat, and between the base crossbar and the support crossbar in the height direction of the seat;

[0027] The seat cushion is also provided with a second slot, and the drive crossbar is engaged in the second slot.

[0028] Thirdly, this application discloses a vehicle, including the leg support mechanism provided in the first aspect or the seat provided in the second aspect.

[0029] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0030] By configuring a base bracket, support bracket, drive assembly, lifting bracket, and support plate frame, and using a lifting structure to drive a transmission component to rotate the lifting bracket relative to the drive bracket, the lifting bracket and support plate frame can be rotated and tilted down or rotated and lifted, thereby enabling the leg rest to be folded up or unfolded. Furthermore, compared to related technologies, the base bracket is connected to the vehicle's floor, rather than to the rigid foam structure of the seat, ensuring stability during leg rest operation. Simultaneously, placing the base bracket below the seat frame saves space in the front of the seat, allowing the leg rest mechanism to be used in the rear seats of vehicles, resulting in a smaller footprint and a simpler structure.

[0031] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 is a schematic diagram of the leg support mechanism described in an embodiment of this application;

[0035] Figure 2 is a structural schematic diagram of the leg support mechanism described in an embodiment of this application;

[0036] Figure 3 is a disassembly diagram of the leg support mechanism described in the embodiment of this application;

[0037] Figure 4 is a partial disassembly diagram of the leg support mechanism described in the embodiment of this application;

[0038] Figure 5 is a side view of the leg support mechanism described in an embodiment of this application;

[0039] Figure 6 is a second side view of the leg support mechanism described in an embodiment of this application;

[0040] Figure 7 is a schematic diagram of the working state of the leg support mechanism described in the embodiment of this application;

[0041] Figure 8 is a schematic diagram of the cooperation state between the leg support mechanism and the seat cushion according to an embodiment of this application.

[0042] Explanation of reference numerals in the attached drawings: 1. Base bracket; 11. Base crossbar; 111. Spring hook; 12. Left bracket; 13. Right bracket; 14. Base crossbar; 2. Support bracket; 21. Support left side plate; 22. Support right side plate; 23. Support crossbar; 3. Drive assembly; 31. Drive bracket; 311. Left reinforcing plate; 312. Right reinforcing plate; 313. Drive crossbar; 32. Lifting structure; 321. Second drive motor assembly; 322. Second lead screw; 323. Second mounting bracket; 4. Lifting bracket; 41. First slide rail; 42. Transmission component; 43. Spring hook plate; 44. Step bolt; 5. Support plate frame; 51. Second slide rail; 6. Sliding drive structure; 61. First drive motor assembly; 62. First lead screw; 63. Slider; 64. First mounting bracket; 7. Elastic component; 10. Seat cushion. Specific Implementation

[0043] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0044] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this disclosure, and not all embodiments.

[0045] As shown in Figures 1 to 6, this application discloses a leg support mechanism for supporting the leg support on a vehicle seat and driving the leg support to fold up or open to support the passenger's lower legs.

[0046] Specifically, the leg support mechanism includes a base bracket 1, a support bracket 2, a drive assembly 3, and a lifting bracket 4. The base bracket 1 is connected to the vehicle's floor (not shown in the figure). The support bracket 2 is connected to the base bracket 1. The drive assembly 3 includes a drive bracket 31 and a lifting structure 32 mounted on the drive bracket 31, with the drive bracket 31 connected to the support bracket 2. The lifting bracket 4 is rotatably connected to the drive bracket 31, and a transmission member 42 is mounted on the lifting bracket 4. The transmission member 42 is rotatably connected to the lifting structure 32, and the lifting structure 32 drives the transmission member 42 to rotate the lifting bracket 4 relative to the drive bracket 31. A support plate 5 is mounted on the lifting bracket 4. The support plate 5 supports the leg support.

[0047] Understandably, by setting up a base bracket 1, a support bracket 2, a drive assembly 3, a lifting bracket 4, and a support plate frame 5, and by driving the transmission component 42 through the lifting structure 32 to make the lifting bracket 4 rotate relative to the drive bracket 31, the lifting bracket 4 and the support plate frame 5 can be rotated down or rotated up, thereby realizing the folding or opening of the leg support and achieving the stable rotation function of the leg support.

[0048] Furthermore, the base bracket 1 is connected to the vehicle's floor, rather than to the rigid foam structure of the seat, ensuring the stability of the leg rest during operation. Simultaneously, placing the base bracket 1 below the seat support saves space in the front of the seat, making the leg rest mechanism suitable for rear seats with a smaller footprint and simpler structure. For example, this allows for the design of leg rests in the rear seats of five-seater vehicles. Specifically, the rear seat cushions of five-seater vehicles are long cushions, typically three-seat cushions. Because they lack an independent frame, the rigid foam structure at the bottom of the cushion is connected to the vehicle floor. Due to insufficient structural strength, the rigid foam structure at the bottom of the cushion cannot directly support the leg rest. Therefore, installing leg rests in the rear seats of five-seater vehicles requires an additional cushion frame, making the overall seat structure more complex and occupying a significant amount of space under the seat. In this application, by connecting the base bracket 1 to the vehicle's floor without requiring an additional cushion frame, the structure is simpler, while ensuring the stability and reliability of the leg rest during operation. Of course, this leg support mechanism can also be used in the front or rear seats of other models.

[0049] It should be noted that in the existing technology, the base bracket 1 of the leg rest mechanism is mounted on the seat bracket. This causes the base bracket 1 to extend forward of the seat, resulting in relatively little space in the front of the rear seats, making it unsuitable for installation on the leg rest mechanism. However, directly connecting the base bracket 1 to the vehicle floor not only reduces the space occupied in front of the seat, making it suitable for rear seats, but also provides support for the leg rest mechanism through the vehicle floor. Combined with the stable structure of the leg rest mechanism itself, this allows for stable rotation and extension of the leg rest.

[0050] As shown in Figures 1 to 4, the leg support mechanism also includes an elastic element 7, one end of which is connected to the base bracket 1, and the other end is connected to the lifting bracket 4. When the lifting bracket 4 rotates relative to the drive bracket 31 and lifts upward, it stretches the elastic element 7. Specifically, the upward lifting of the lifting bracket 4 refers to the end of the lifting bracket 4 away from the drive bracket 31 gradually moving upward in the vertical direction as the lifting bracket 4 rotates.

[0051] Understandably, when the lifting support 4 is rotated relative to the driving support 31 and lifted upward under the drive of the lifting structure 32, the elastic element 7 can be gradually stretched, thereby applying a force against the driving force of the lifting structure 32 to the lifting support 4 through the elastic force of the elastic element 7, so that the lifting support 4 can move stably and avoid noise and vibration generated by the lifting support 4 during the lifting process.

[0052] As shown in Figures 1 to 3, the aforementioned base support 1 includes a left support 12, a right support 13, a base horizontal plate 14, and a base horizontal rod 11. The base horizontal plate 14 is connected to the left support 12 and the right support 13. Both the left support 12 and the right support 13 are provided with support protrusions. The two ends of the base horizontal rod 11 are respectively connected to the two support protrusions. One end of the aforementioned elastic element 7 is connected to the base horizontal rod 11, and the other end is connected to the lifting support 4; the support bracket 2 is connected to the base horizontal rod 11.

[0053] By using the support protrusions on the left bracket 12 and the right bracket 13, the base crossbar 11 is raised to a certain height, thereby reducing the length of the support bracket 2 or the drive bracket 31, thus avoiding the structural instability caused by the excessive length of the support bracket 2 or the drive bracket 31.

[0054] The left bracket 12 and right bracket 13 are used to connect to the vehicle's floor. Specifically, the left bracket 12 and right bracket 13 are fixed to the vehicle floor with screws.

[0055] For example, in one specific implementation, referring to Figure 3, a spring hook 111 is provided on the base crossbar 11, and one end of the elastic member 7 is connected to the spring hook 111. Alternatively, one end of the elastic member 7 can also be directly welded to the base crossbar 11.

[0056] It should be noted that the left support 12 and the right support 13 are connected to the base crossbar 11 by welding, and the left support 12 and the right support 13 are connected to the base crossbar 14 by welding. That is to say, the left support 12, the right support 13, the base crossbar 14 and the base crossbar 11 are connected by welding to form the base support 1, ensuring that the base support 1 has good structural strength and rigidity.

[0057] As shown in Figures 1 to 3, the aforementioned drive bracket 31 includes a left reinforcing plate 311, a right reinforcing plate 312, and a drive crossbar 313 connecting the left and right reinforcing plates 311 and 312. Both the left and right reinforcing plates 311 and 312 are connected to the support bracket 2, and the lifting structure 32 is mounted on the drive crossbar 313. The left and right reinforcing plates 311 and 312 are both inclined upwards relative to the horizontal direction, and the lifting bracket 4 is rotatably connected to the left and right reinforcing plates 311 and 312.

[0058] With this configuration, the height of the lifting bracket 4 in the seat height direction can be raised by the left reinforcing plate 311 and the right reinforcing plate 312, so that the lifting bracket 4 can reach the height to support the leg rest. After the lifting bracket 4 rotates relative to the drive bracket 31, the leg rest reaches the set height to support the passenger's legs.

[0059] Furthermore, in some embodiments, the lifting structure 32 includes a second drive motor assembly 321, a second lead screw 322, and a second mounting bracket 323. The second drive motor assembly 321 is mounted on the drive crossbar 313 via the second mounting bracket 323. The second lead screw 322 is connected to the second drive motor assembly 321 and is inclined upwards relative to the horizontal direction. One end of the second lead screw 322 away from the base bracket 1 is rotatably connected to the transmission member 42. The second drive motor assembly 321 drives the second lead screw 322 to move in its extension direction, thereby causing the lifting bracket 4 to rotate relative to the drive bracket 31.

[0060] Understandably, when the second lead screw 322 moves upward in its extension direction, the transmission member 42 drives the lifting bracket 4 to rotate upward relative to the drive bracket 31, thereby causing the lifting bracket 4 to open the leg support upward. When the second lead screw 322 moves downward in its extension direction, the transmission member 42 drives the lifting bracket 4 to rotate downward relative to the drive bracket 31, thereby causing the lifting bracket 4 to fold the leg support downward.

[0061] It should be noted that the aforementioned second drive motor assembly 321 is rotatably mounted on the second mounting bracket 323, and can swing up and down relative to the second mounting bracket 323. This increases the number of kinematic pairs. Thus, while driving the second lead screw 322 to move in its extension direction, the second drive motor assembly 321 can also drive the second lead screw 322 to swing up and down. During this process, the second lead screw 322 does not rotate around its own axis. Therefore, when the second drive motor assembly 321 drives the second lead screw 322 to move in its extension direction, its own rotation drives the lifting bracket 4 to rotate upward or downward relative to the drive bracket 31. Specifically, the second drive motor assembly 321 rotates around the axis extending in the extension direction of the drive crossbar 313.

[0062] The aforementioned second drive motor assembly 321 includes a second drive motor and a gear set, wherein one gear in the gear set meshes with the second lead screw 322, and the second drive motor drives the second lead screw 322 to move in its extension direction through the gear set.

[0063] Optionally, in some embodiments, the lifting structure 32 may include a second drive motor assembly 321 and a rack. The second drive motor assembly 321 includes a second drive motor and a gear, with the second drive motor driving the gear to rotate. The second drive motor assembly 321 is mounted on the drive crossbar 313 via a second mounting bracket 323. The rack meshes with the gear, is inclined upwards relative to the horizontal direction, and one end of the rack is rotatably connected to the transmission member 42. The second drive motor drives the rack to move in its extending direction via the gear, thereby causing the lifting bracket 4 to rotate relative to the drive bracket 31 via the transmission member 42.

[0064] As shown in Figures 1 to 3, the aforementioned support bracket 2 includes a left support plate 21 and a right support plate 22. Both the left support plate 21 and the right support plate 22 are connected to the base bracket 1. The left support plate 21 is connected to the left reinforcing plate 311 and is stacked with the left reinforcing plate 311. The right support plate 22 is connected to the right reinforcing plate 312 and is stacked with the right reinforcing plate 312. Both the left support plate 21 and the right support plate 22 are connected to the base crossbar 11.

[0065] Specifically, the support bracket 2 and the drive bracket 31 work together to provide stable support for the drive bracket 31, thereby enhancing the support effect on the lifting bracket 4.

[0066] Furthermore, the aforementioned left reinforcing plate 311 is located below the supporting left side plate 21, and the right reinforcing plate 312 is located below the supporting right side plate 22. In this way, the lifting bracket 4 and the drive bracket 31 jointly provide support for the lifting bracket 4, which helps to improve the stability of the support for the lifting bracket 4.

[0067] Furthermore, the aforementioned support bracket 2 also includes a support cross plate 23, which is connected to the right support plate 22 and the left support plate 21. The support cross plate 23 is used to support the seat cushion 10 of the seat.

[0068] Specifically, in the fore-aft direction of the seat, the support crossbar 23 is located in front of the base crossbar 11, and the drive crossbar 313 is located between the support crossbar 23 and the base crossbar 11; in the height direction of the seat, the support crossbar 23 is located above the base crossbar 11, and the drive crossbar 313 is located between the support crossbar 23 and the base crossbar 11. That is to say, the base crossbar 11, the drive crossbar 313, and the support crossbar 23 gradually rise towards the front of the seat to facilitate support for the seat cushion 10.

[0069] As shown in Figures 3 and 4, the lifting bracket 4 includes a lifting plate and a lifting crossbar connected together, with the lifting plate rotatably connected to the drive bracket 31. The transmission component 42 is connected to the lifting crossbar, and the connection method can be screwed, welded, etc.

[0070] Specifically, the aforementioned lifting plate is connected to the left reinforcing plate 311 and the right reinforcing plate 312 respectively by two stepped bolts 44. The two stepped bolts 44 are threaded to the left reinforcing plate 311 and the right reinforcing plate 312 respectively, and the lifting plate is sleeved on the stepped bolts 44 and can rotate around the stepped bolts 44.

[0071] Furthermore, the lifting bracket 4 is provided with a spring hook plate 43, and the other end of the elastic element 7 is connected to the spring hook plate 43. Specifically, the spring hook plate 43 is connected to the lifting crossbar. Preferably, the spring hook plate 43 is fixed to the lifting crossbar by welding.

[0072] Referring to Figures 1 to 4, the aforementioned support plate frame 5 is slidably mounted on the lifting bracket 4. The leg support mechanism also includes a sliding drive structure 6, which is mounted on the lifting bracket 4 or the support plate frame 5 to drive the support plate frame 5 to slide relative to the lifting bracket 4.

[0073] Understandably, the support plate 5 is slidably mounted on the lifting bracket 4. Through the sliding drive structure 6, the support plate 5 can be driven to slide relative to the lifting bracket 4 after the lifting bracket 4 is rotated and lifted, thereby extending or retracting the leg support and realizing the stable extension and retraction function of the leg support.

[0074] Referring to Figures 3 and 4, the aforementioned support plate frame 5 is a plate-shaped structure, which can increase the support area for the leg support, thereby providing stable support for the leg support.

[0075] Referring to Figures 3 and 4, the lifting bracket 4 is provided with a first slide rail 41, and the support plate frame 5 is provided with a second slide rail 51. The second slide rail 51 and the first slide rail 41 cooperate with each other to achieve sliding cooperation between the support plate frame 5 and the lifting bracket 4, thereby guiding the support plate frame 5 when it slides relative to the lifting bracket 4. The first slide rail 41 is provided on the lifting plate body of the lifting bracket 4.

[0076] For example, in one specific implementation, referring to Figures 3 and 4, two of the first slide rail 41 and the second slide rail 51 are provided. The two first slide rails 41 and the two second slide rails 51 cooperate one-to-one to further improve the stability of the lifting bracket 4 and the support plate frame 5 when they slide relative to each other.

[0077] Referring to FIG4, in some embodiments, the sliding drive structure 6 includes a first drive motor assembly 61, a first lead screw 62 and a slider 63. The first drive motor assembly 61 is mounted on the support plate frame 5 and connected to the first lead screw 62. The first lead screw 62 extends along the sliding direction of the support plate frame 5. The slider 63 is disposed on the lifting bracket 4 and threadedly connected to the first lead screw 62.

[0078] Specifically, the aforementioned sliding drive structure 6 also includes a first mounting bracket 64, through which the aforementioned first drive motor assembly 61 is mounted on the support plate frame 5. Moreover, both the first drive motor assembly 61 and the first lead screw 62 are located on the side of the support plate frame 5 facing the lifting bracket 4.

[0079] In this system, the first drive motor assembly 61 drives the first lead screw 62 to rotate around its axis. A slider 63 is mounted on the lifting bracket 4 and threadedly connected to the first lead screw 62. Since the slider 63 is fixedly mounted on the lifting bracket 4 and cannot move, the first lead screw 62 and the first drive motor assembly 61 move along the extension direction of the first lead screw 62, thereby achieving the sliding of the support plate 5 relative to the lifting bracket 4. Understandably, when the first drive motor assembly 61 drives the first lead screw 62 in different rotational directions, the movement direction of the support plate 5 relative to the lifting bracket 4 will be different.

[0080] It should be noted that the aforementioned slider 63 can be fixed to the lifting bracket 4 by welding or screwing, and this embodiment does not impose any specific restrictions.

[0081] Alternatively, in other embodiments, the first drive motor assembly 61 described above may be mounted on the lifting bracket 4, while the slider 63 may be disposed on the support plate frame 5. The slider 63 and the support plate frame 5 are fixedly connected, and the first drive motor assembly 61 drives the slider 63 to move the support plate frame 5 through the first lead screw 62.

[0082] The working process of this leg support mechanism will be explained in detail below:

[0083] As shown in Figure 1, both the lifting bracket 4 and the support plate 5 are folded at this time, and the leg support is also folded. When the leg support needs to be lifted, the second drive motor assembly 321 drives the second lead screw 322 to move upward in its extension direction, causing the lifting bracket 4 to rotate upward relative to the drive bracket 31 to the desired position via the transmission component 42, as shown in Figure 5. When the leg support needs to be extended, the first drive motor assembly 61 drives the first lead screw 62 to rotate forward, thereby driving the support plate 5 to move away from the drive bracket 31 until it reaches the desired position, as shown in Figures 2 and 6.

[0084] It should be noted that, in the states shown in Figures 2 and 6, when the leg rest needs to be folded, the first drive motor assembly 61 first drives the first lead screw 62 to rotate in the opposite direction, thereby driving the support plate 5 to move closer to the drive bracket 31, realizing the folding of the support plate 5 and the lifting bracket 4. Subsequently, the second drive motor assembly 321 drives the second lead screw 322 to move downward in its extension direction, causing the lifting bracket 4 to rotate downward relative to the drive bracket 31 to the initial position (as shown in Figure 1) through the transmission component 42, thus realizing the folding of the leg rest.

[0085] This disclosure also provides a seat, as shown in Figures 7 and 8, which includes the aforementioned leg support mechanism and seat cushion 10. The seat cushion 10 has a seat cushion portion and a leg support portion, the leg support portion being rotatable relative to the seat cushion portion, and the seat cushion portion having a first groove.

[0086] The base bracket 1 includes a base crossbar 11, and the support bracket 2 includes a support plate 23. The support plate 23 is located on the front side of the base crossbar 11 in the front-back direction of the seat and above the base crossbar 11 in the height direction of the seat. The base crossbar 11 is engaged in the first slot, and the support plate 23 is supported at the corner of the seat cushion and the leg rest. The leg rest is connected to the support plate frame 5.

[0087] The leg support mechanism is installed on the vehicle floor via a base bracket 1. The base crossbar 11 engages with the first slot, and the support plate 23 supports the corner of the seat cushion and the leg support. The leg support is connected to the support plate frame 5, thereby enabling the leg support mechanism to cooperate with the seat cushion 10. The leg support mechanism provides stable support for the seat cushion 10 and can drive the leg support to move.

[0088] Thus, during installation, the leg support mechanism can be installed on the vehicle floor first via the base bracket 1, and then the seat cushion 10 can be installed, so that the base crossbar 11 and the first slot are engaged, and the support crossbar 23 is supported at the corner of the seat cushion and the leg support, which facilitates the installation of the seat.

[0089] It should be noted that because the base bracket 1 is fixed to the vehicle floor rather than the seat bracket, it does not occupy the front space of the seat. This allows the leg rest mechanism to be used in the rear seats of five-seater vehicles, enabling the design of leg rests for the rear seats of five-seater vehicles. The rear seat cushions of five-seater vehicles are typically long cushions, usually three-seat cushions. Of course, this leg rest mechanism is generally applicable to the front or rear seats of other vehicle models.

[0090] Furthermore, referring to Figure 8, the drive bracket 31 also includes a drive crossbar 313, which is located between the base crossbar 11 and the support crossbar 23 in the seat's fore-and-aft direction, and between the base crossbar 11 and the support crossbar 23 in the seat's height direction. The seat cushion portion is also provided with a second slot, in which the drive crossbar 313 is engaged.

[0091] The stability of the seat cushion and leg support mechanism is further improved by the cooperation of the drive bar 313 and the second slot.

[0092] It should be noted that the first and second slots mentioned above are both located on the EPP (Expanded polyproplene) structure of the seat cushion 10.

[0093] This application also discloses a vehicle including the seats described in any of the above embodiments. This vehicle possesses the technical effects of the seat embodiments described above, which will not be repeated here. The vehicle can be a five-seater, a seven-seater, etc., and is not specifically limited thereto.

[0094] This application also discloses a vehicle including the leg support mechanism described in any of the above embodiments. This vehicle has the technical effects of the leg support mechanism embodiments described above, which will not be repeated here. The vehicle can be a five-seater model, a seven-seater model, etc., and is not specifically limited here.

[0095] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0096] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A leg support mechanism, characterized in that, include: The base bracket is attached to the vehicle's floor. A support bracket is connected to the base bracket; A drive assembly includes a drive bracket and a lifting structure disposed on the drive bracket, the drive bracket being connected to the support bracket; A lifting bracket is rotatably connected to the driving bracket. A transmission component is provided on the lifting bracket. The transmission component is rotatably connected to the lifting structure. The lifting structure drives the transmission component to make the lifting bracket rotate relative to the driving bracket. The support plate frame is mounted on the lifting bracket.

2. The leg support mechanism according to claim 1, characterized in that, The leg support mechanism also includes an elastic element, one end of which is connected to the base bracket and the other end of which is connected to the lifting bracket; When the lifting bracket rotates relative to the driving bracket and is lifted upward, it stretches the elastic element.

3. The leg support mechanism according to claim 2, characterized in that, The base support includes a left support, a right support, a base horizontal plate, and a base horizontal bar. The base horizontal plate is connected to the left support and the right support. Both the left support and the right support have support protrusions. The base horizontal bar is connected to the two support protrusions. The elastic element is connected to the base crossbar, and the support bracket is connected to the base crossbar.

4. The leg support mechanism according to any one of claims 1-3, characterized in that, The drive bracket includes a left reinforcing plate, a right reinforcing plate, and a drive crossbar connected between the left and right reinforcing plates. Both the left and right reinforcing plates are connected to the support bracket, and the lifting structure is disposed on the drive crossbar. Both the left and right reinforcing plates are inclined upward relative to the horizontal direction, and the lifting bracket is rotatably connected to the left and right reinforcing plates.

5. The leg support mechanism according to claim 4, characterized in that, The support bracket includes a left support plate and a right support plate. Both the left support plate and the right support plate are connected to the base bracket. The left support plate is connected to the left reinforcing plate and is stacked with the left reinforcing plate. The right support plate is connected to the right reinforcing plate and is stacked with the right reinforcing plate.

6. The leg support mechanism according to claim 5, characterized in that, The support bracket also includes a support cross plate, which is connected to the right support plate and the left support plate. The support cross plate is used to support the seat cushion of the seat.

7. The leg support mechanism according to any one of claims 1-3, characterized in that, The support plate frame is slidably mounted on the lifting bracket; The leg support mechanism further includes a sliding drive structure, which is disposed on the lifting bracket or the support plate frame to drive the support plate frame to slide relative to the lifting bracket.

8. The leg support mechanism according to claim 7, characterized in that, The sliding drive structure includes a first drive motor assembly, a first lead screw, and a slider. The first drive motor assembly is mounted on the support plate frame and connected to the first lead screw. The first lead screw extends along the sliding direction of the support plate frame. The slider is fixedly mounted on the lifting bracket and threadedly connected to the first lead screw.

9. A type of seat, characterized in that, Includes a seat cushion and a leg support mechanism as described in any one of claims 1-8, wherein the seat cushion has a seat cushion portion and a leg support portion, the leg support portion is rotatable relative to the seat cushion portion, and the seat cushion portion is provided with a first slot; The base bracket includes a base crossbar, and the support bracket includes a support plate. The support plate is located on the front side of the base crossbar in the front-back direction of the seat and above the base crossbar in the height direction of the seat. The base crossbar is engaged in the first slot. The support plate is supported at the corner of the seat cushion and the leg rest. The leg rest is connected to the support plate frame.

10. The seat according to claim 9, characterized in that, The drive bracket includes a drive crossbar, which is located between the base crossbar and the support crossbar in the front-rear direction of the seat, and between the base crossbar and the support crossbar in the height direction of the seat; The seat cushion is also provided with a second slot, and the drive crossbar is engaged in the second slot.

11. A vehicle, characterized in that, Includes the leg support mechanism as described in any one of claims 1-8 or the seat as described in any one of claims 9-10.

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