Seat structure and vehicle

Abstract

The utility model provides a seat structure and a vehicle, the seat structure comprises a framework, a seat basin and a first driving part, the seat basin is arranged on the framework through a mounting mechanism, the rear end of the seat basin can rotate relative to the framework, and the front end of the seat basin can move back and forth relative to the framework; the first driving part is arranged on the framework and is in transmission connection with the mounting mechanism, and the first driving part can drive the mounting mechanism to drive the seat basin to sequentially have a first movement stroke for moving forwards and a second movement stroke for lifting the rear end of the seat basin to the rear upper part. According to the seat structure disclosed by the utility model, the first driving part can drive the mounting mechanism to drive the seat basin to have the first movement stroke for moving forwards and the second movement stroke for lifting the rear end of the seat basin to the rear upper part in sequence, so that a seat cushion is prevented from interfering with a backrest in the upward lifting process; and the gap between the seat cushion and the backrest is reduced, so that the exposure of a metal plate structure in the seat is avoided, and the delicate feeling of the seat structure is ensured.

Description

Technical Field

[0001] This utility model relates to the field of vehicle component technology, and in particular to a seat structure; at the same time, this utility model also relates to a vehicle equipped with the seat structure. Background Technology

[0002] As people pay more and more attention to seat comfort, the demand for comfortable use in various seat structures and modes is also increasing. When the backrest is laid flat, people can lie down and rest. However, in traditional seat structures, when the backrest is laid flat, there is a 20-80mm height difference between the seat cushion and the backrest, which cannot meet the needs of lumbar support, resulting in poor comfort when the backrest is laid flat.

[0003] To reduce the height difference between the seat cushion and the backrest when lying flat, the seat cushion usually needs to be raised. However, during the raising process, the seat cushion and the backrest are prone to interference, and raising the seat cushion will result in a large gap at the joint between the seat cushion and the backrest. Through the gap, the internal sheet metal structure of the seat can be seen, which affects the exquisiteness of the seat structure. Utility Model Content

[0004] In view of this, the present invention aims to provide a seat structure to improve the comfort of use in a lying position.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A seat structure, comprising:

[0007] skeleton;

[0008] The seat basin is mounted on the frame via a mounting mechanism, and the rear end of the seat basin can rotate relative to the frame, while the front end of the seat basin can move back and forth relative to the frame.

[0009] A first driving unit is disposed on the frame and is connected to the mounting mechanism in a transmission manner. The first driving unit can drive the mounting mechanism to move the seat basin forward in a first movement stroke and to lift the rear end of the seat basin backward and upward in a second movement stroke.

[0010] Furthermore, the frame includes sub-frames arranged opposite to each other on the left and right sides, and a rear linkage rod connecting the rear ends of the sub-frames on both sides; the mounting mechanism includes a rear mounting seat rotatably mounted on the rear linkage rod via a transmission plate, the rear mounting seat being connected to the rear end of the seat basin, and the driving end of the first driving part being hinged to the transmission plate.

[0011] Furthermore, the rear mounting base includes a rear mounting tube arranged parallel to the rear linkage rod, and a rear mounting block disposed on the rear mounting tube; the rear mounting tube is connected to the transmission plate, the rear mounting block is connected to the rear end of the seat basin, and in the initial state, the rear mounting tube is located on the front side of the rear linkage rod, and the hinge point between the drive end of the first drive unit and the transmission plate is located on the rear side of the rear linkage rod.

[0012] Furthermore, the first drive unit includes a fixed seat disposed on one of its sub-frames, and a lead screw motor disposed on the fixed seat; the lead screw motor is capable of swinging relative to the fixed seat within a preset range, and the lead screw of the lead screw motor is hingedly connected to the transmission plate.

[0013] Furthermore, the installation mechanism includes a support tube rotatably mounted on the sub-frame via an installation component, and a front mounting block sleeved outside the support tube; the front mounting block is connected to the front end of the seat basin and is capable of sliding back and forth relative to the support tube.

[0014] Furthermore, the sub-frame is provided with a second driving part, and the mounting assembly includes a mounting plate hinged to the second driving part; the mounting plate is fixedly connected to the support tube, and the second driving part can drive the front end of the seat basin to rise upward through the mounting plate.

[0015] Furthermore, each of the sub-frames includes a base and a side plate that forms a four-bar linkage with the base via a connecting rod. A third drive unit is provided on one of the side plates and is connected to the rear linkage rod for transmission. The third drive unit is used to drive the two side sub-frames to swing back and forth so that the seat basin is raised and lowered. The first drive unit is mounted on the front end of one side plate.

[0016] Furthermore, the frame is provided with a limiting part, which can abut against the mounting mechanism to limit the rotation angle of the rear end of the seat basin.

[0017] Furthermore, the limiting part includes a limiting plate disposed between the two side sub-frames, and the transmission plate can abut against the limiting plate to limit the rotation angle of the rear end of the seat basin.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] The seat structure described in this utility model, through a first driving unit driving the mounting mechanism to move the seat basin forward in a first movement stroke, and a second movement stroke to lift the rear end of the seat basin backward and upward, helps to reduce the height difference between the backrest and the seat cushion when lying flat. The first movement stroke also helps to avoid interference between the seat cushion and the backrest, and the second movement stroke helps to reduce the gap between the seat cushion and the backrest, thereby helping to avoid the exposure of the internal sheet metal structure of the seat, and thus helping to ensure the exquisite appearance of the seat structure.

[0020] Secondly, the rear mounting base is rotatably mounted on the rear linkage rod via a transmission plate. The first drive unit is connected to the rear mounting base via the transmission plate, which allows for a more direct and effective transmission of power to the rear of the seat. This reduces power loss and dispersion during transmission and improves the seat's lifting effect. In the initial state, the rear mounting tube is located in front of the rear linkage rod, and the hinge point between the drive end of the first drive unit and the transmission plate is located behind the rear linkage rod. This ensures that the seat has a first forward movement stroke and a second upward and backward movement stroke. The lead screw motor in the first drive unit can swing relative to the fixed base, facilitating the realization of the seat's first and second movement strokes.

[0021] Furthermore, the front mounting block facilitates seat installation and allows it to slide back and forth relative to the support tube, enabling the achievement of the first and second stroke movements. The cooperation of the second drive unit, mounting plate, and support tube ensures the upward lifting of the front end of the seat, thus improving its performance. The third drive unit and four-bar linkage facilitate adjusting the seat height, enhancing the seat's comfort. The limiting part, abutting against the mounting mechanism, restricts the rotation angle of the rear end of the seat, ensuring its performance. The abutting between the transmission plate and the limiting plate further restricts the rotation angle of the rear end of the seat, facilitating implementation and providing effective limiting.

[0022] In addition, another objective of this utility model is to provide a vehicle having the seat structure described above.

[0023] The vehicle described in this utility model, by setting the seat structure as described above, helps to improve the comfort of vehicle use. Attached Figure Description

[0024] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0025] Figure 1 This is a schematic diagram of the seat structure in use according to Embodiment 1 of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the basin, frame, and backrest described in Embodiment 1 of this utility model;

[0027] Figure 3 This is a schematic diagram of a portion of the seat structure described in Embodiment 1 of this utility model from a first-view perspective;

[0028] Figure 4 This is a schematic diagram of a portion of the seat structure described in Embodiment 1 of this utility model from a second perspective;

[0029] Figure 5 This is a schematic diagram of a portion of the seat structure described in Embodiment 1 of this utility model from a third-person perspective;

[0030] Figure 6 This is a schematic diagram of a portion of the seat structure described in Embodiment 1 of this utility model from a fourth perspective;

[0031] Figure 7 This is a partial structural diagram of the first driving unit and the mounting mechanism described in Embodiment 1 of this utility model;

[0032] Figure 8 This is a partial structural schematic diagram of the first driving unit described in Embodiment 1 of this utility model;

[0033] Figure 9 This is a partial internal structure diagram of the first driving unit described in Embodiment 1 of this utility model;

[0034] Figure 10 This is a schematic diagram of the connecting beam and force transmission plate described in Embodiment 1 of this utility model;

[0035] Figure 11 This is a schematic diagram of the structure of the second driving unit and the support tube as described in Embodiment 1 of this utility model;

[0036] Figure 12 This is a schematic diagram of the structure of the second drive unit and mounting plate described in Embodiment 1 of this utility model;

[0037] Figure 13 This is a schematic diagram of the internal structure of the second drive unit according to Embodiment 1 of this utility model;

[0038] Figure 14 This is a schematic diagram of the structure of the third driving unit according to Embodiment 1 of this utility model.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100. Frame; 200. Seat cushion; 300. Backrest;

[0041] 1. Frame; 2. Seat basin; 3. Rear mounting base; 4. Support tube; 5. First drive unit; 6. Second drive unit; 7. Third drive unit;

[0042] 101. Base; 1011. Slide rail; 1012. Slider; 102. Side plate; 103. Connecting rod; 1031. Meshing gear; 1032. Limiting hole; 104. Connecting plate; 105. Rear linkage rod; 106. Front linkage rod; 107. Transmission plate; 108. First mounting bracket; 109. First connecting piece; 110. Second mounting bracket; 111. Second connecting piece; 112. Limiting plate;

[0043] 401, front mounting block; 4011, oblong hole;

[0044] 301. Rear mounting tube; 302. Rear mounting block;

[0045] 501. Fixed base; 502. Lead screw motor; 503. First lead screw; 5031. Connecting beam; 504. Lead screw nut; 505. First limit block; 506. Second limit block;

[0046] 601. Second lead screw; 602. Mounting plate; 603. Connecting hole; 604. Worm gear; 605. Worm wheel;

[0047] 701. Gear; 702. Fixing plate. Detailed Implementation

[0048] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0049] In the description of this utility model, it should be noted that the directional terms used in this embodiment, such as "up," "down," "left," "right," "front," and "rear," are defined based on the vertical, horizontal, and longitudinal directions of the vehicle. Specifically, the vertical direction of the vehicle is the height direction (Z-axis), the longitudinal direction is the length direction (X-axis), and the horizontal direction is the width direction (Y-axis). Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0051] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0052] Example 1

[0053] This embodiment relates to a seat structure that addresses the problem of poor comfort when the seat is in a reclining position in the prior art by optimizing its own structure.

[0054] In terms of overall structure, the seat structure described in this embodiment includes a frame 100, a seat basin 2, and a first drive unit 5. The seat basin 2 is mounted on the frame 100 via a mounting mechanism, and its rear end is rotatable relative to the frame 100, while its front end is movable back and forth relative to the frame 100. The first drive unit 5 is mounted on the frame 100 and is connected to the mounting mechanism. The first drive unit 5 drives the mounting mechanism to move the seat basin 2 forward for a first stroke and then lifts the rear end of the seat basin 2 backward and upward for a second stroke.

[0055] The seat structure described in this embodiment, through the first drive unit 5 driving the mounting mechanism to move the seat basin 2 forward in a first movement stroke and to lift the rear end of the seat basin 2 backward and upward in a second movement stroke, helps to reduce the height difference between the backrest 300 and the seat cushion 200 when lying flat. The first movement stroke also helps to avoid interference between the seat cushion 200 and the backrest 300, and the second movement stroke helps to reduce the gap between the seat cushion 200 and the backrest 300, thereby helping to avoid the exposure of the sheet metal structure inside the seat and thus helping to ensure the exquisite appearance of the seat structure.

[0056] Based on the above overview, an exemplary structure of the seat structure described in this embodiment is as follows: Figure 1 and Figure 2 As shown in the figure. Similar to the structure of the seat cushion 200 in the prior art, the seat basin 2 serves as the main body of the seat cushion 200, and is provided with a foam body and a fabric layer covering the foam body. The seat cushion 200 is connected to the surrounding components through the seat basin 2.

[0057] As a preferred implementation method, such as Figures 3 to 6As shown, the frame 100 of this embodiment includes sub-frames 1 arranged opposite to each other on the left and right sides, and a rear linkage rod 105 connecting the rear ends of the sub-frames 1 on both sides. The mounting mechanism includes a rear mounting seat 3 rotatably mounted on the rear linkage rod 105 via a transmission plate 107. The rear mounting seat 3 is connected to the rear end of the seat basin 2, and the driving end of the first driving part 5 is hinged to the transmission plate 107. This allows the rear mounting seat 3 to be rotatably mounted on the rear linkage rod 105 via the transmission plate 107, and the first driving part 5 to be connected to the rear mounting seat 3 via the transmission plate 107. This facilitates the lifting of the rear part of the seat basin 2 and can transmit power to the rear end of the seat basin 2 more directly and effectively, reducing power loss and dispersion during transmission and providing better flexibility in use.

[0058] In terms of specific structure, in this embodiment, the rear linkage rod 105 is fixedly connected between the rear ends of the top of the two side frames 100 and serves as the mounting carrier for the rear mounting seat 3. Relative to the rear linkage rod 105, a front linkage rod 106 is fixedly connected between the front ends of the top of the two sub-frames 1. The cooperation between the front linkage rod 106 and the rear linkage rod 105 helps to improve the strength and performance of the frame 100.

[0059] As a preferred implementation method, such as Figure 7 As shown, the rear mounting base 3 includes a rear mounting tube 301 arranged parallel to the rear linkage rod 105, and a rear mounting block 302 disposed on the rear mounting tube 301. The rear mounting tube 301 is connected to the transmission plate 107, and the rear mounting block 302 is connected to the rear end of the seat basin 2. In the initial state, the rear mounting tube 301 is located on the front side of the rear linkage rod 105, and the hinge point between the drive end of the first drive unit 5 and the transmission plate 107 is located on the rear side of the rear linkage rod 105.

[0060] In terms of specific structure, corresponding to both ends of the rear mounting tube 301, transmission plates 107 are rotatably mounted at both ends of the rear linkage rod 105. The two ends of the rear mounting tube 301 are fixedly connected between the two transmission plates 107, allowing them to rotate around the axis of the rear linkage rod 105. Two rear mounting blocks 302 are rotatably mounted relative to the rear mounting tube 301 and connected to the rear end of the seat basin 2 to facilitate the installation of the rear part of the seat basin 2. The rear mounting blocks 302 can adopt a structure found in existing technology, which will not be described in detail here.

[0061] In this embodiment, in the initial state, the rear mounting tube 301 is located on the front side of the rear linkage rod 105, and the hinge point between the drive end of the first drive part 5 and the transmission plate 107 is located on the rear side of the rear linkage rod 105, which helps to ensure that the seat 2 has a first movement stroke that moves forward and a second movement stroke that lifts backward and upward.

[0062] In a preferred embodiment, the first drive unit 5 includes a fixed base 501 disposed on one of its sub-frames 1, and a lead screw motor 502 disposed on the fixed base 501. The lead screw motor 502 is capable of oscillating relative to the fixed base 501 within a preset range, and the lead screw of the lead screw motor 502 is hingedly connected to the transmission plate 107. The ability of the lead screw motor 502 in the first drive unit 5 to oscillate relative to the fixed base 501 facilitates the driving of the seat 2 to achieve the action of the first stroke and the second stroke. To distinguish it from the lead screw described below, the lead screw in the first drive unit 5 will be referred to as the first lead screw 503.

[0063] like Figure 5 and Figure 6 As shown, to facilitate the arrangement of the lead screw motor 502, the first drive unit 5 is mounted on the front end of one side plate 102 via a mounting bracket. To distinguish it from the mounting bracket described below, the mounting bracket in the first drive unit 5 is referred to as the first mounting bracket 108. The first mounting bracket 108 is fixed to the inner side of its one side plate 102. A first connecting member 109 is provided on the first mounting bracket 108, and is rotatably mounted on the front linkage rod 106 via the first connecting member 109. The first connecting member 109 here can be a clamp from the prior art, which is approximately “Ω” shaped. The first connecting member 109 has a simple structure, is easy to arrange and implement, and has good performance.

[0064] In this embodiment, the fixed base 501 is specifically installed at the bottom of the first mounting bracket 108 to mount the lead screw motor 502 at the bottom of the first mounting bracket 108. Additionally, similar to the prior art, a lead screw nut 504 is typically screwed onto the first lead screw 503. In this embodiment, the lead screw motor 502 is connected to the transmission plate 107 via the lead screw nut 504. To reduce the length of the first lead screw 503 and thus lower costs, such as... Figure 6 As shown in the figure, in this embodiment, a forward-extending connecting beam 5031 is provided on the transmission plate 107, and is connected to the lead screw nut 504 through the connecting beam 5031.

[0065] Reference Figure 7 As shown, the transmission plate 107 is generally triangular. In the initial state, the top corner of the transmission plate 107 is connected to the rear linkage rod 105, the rearmost corner of the bottom of the transmission plate 107 is hinged to the rear end of the connecting beam 5031, and the frontmost corner of the bottom of the transmission plate 107 is connected to the rear mounting tube 301. The first lead screw 503 is driven to rotate by the lead screw motor 502, causing the connecting beam 5031 to move forward or backward, pulling or pushing the transmission plate 107. This, in turn, drives the rear mounting tube 301 to rotate via the transmission plate 107, thereby facilitating the lifting and lowering of the rear end of the seat basin 2.

[0066] To further improve the performance of the seat cushion 200, in this embodiment, the frame 100 is provided with a limiting part that can abut against the mounting mechanism to limit the rotation angle of the rear end of the seat basin 2. By limiting the rotation angle of the rear end of the seat basin 2 through the abutment between the limiting part and the mounting mechanism, the performance of the seat basin 2 is ensured.

[0067] As a possible implementation method, such as Figure 10 As shown, the limiting part includes a limiting plate 112 disposed between the two side frames 1, and the transmission plate 107 can abut against the limiting plate 112 to limit the rotation angle of the rear end of the seat basin 2. Specifically, the limiting plate 112 is disposed between the rear ends of the two side frames 100 and located behind the transmission plate 107. In the initial state, the transmission plate 107 can abut against the limiting plate 112, thereby limiting the stability of the rear end of the seat basin 2 in the initial state. The limiting plate 112 has a simple structure, is easy to arrange and implement, and has a good limiting effect.

[0068] In addition, the transmission plate 107 also helps to improve the connection strength and stability between the two side sub-frames 1. To prevent abnormal noise when the limiting plate 112 abuts against the transmission plate 107, a rubber pad is provided on the side of the transmission plate 107 used for abutting and limiting the limiting plate 112.

[0069] It should be noted that in this embodiment, the limiting plate 112 may not be provided, such as... Figure 8 and Figure 9 As shown, a first limiting block 505 is typically provided at the free end of the first lead screw 503, while a second limiting block 506 is provided on the housing of the lead screw motor 502. Thus, the movement of the lead screw nut 504, connecting beam 5031, and transmission plate 107 towards the rear of the seat is limited by the contact between the first limiting block 505 and the lead screw nut 504. Conversely, the movement of the lead screw nut 504, connecting beam 5031, and transmission plate 107 towards the front of the seat is limited by the contact between the second limiting block 506 and the lead screw nut 504.

[0070] like Figure 6 As shown, the mounting mechanism includes a support tube 4 rotatably mounted on the sub-frame 1 via a mounting assembly, and a front mounting block 401 sleeved on the support tube 4. The front mounting block 401 is connected to the front end of the seat 2 and can slide back and forth relative to the support tube 4. Each front mounting block 401 has an elongated hole 4011 extending in the front-back direction. The support tube 4 passes through the elongated hole 4011, allowing the front mounting block 401 to rotate around the support tube 4 while also sliding back and forth relative to the support tube 4, thus facilitating the use when the seat 2 is raised.

[0071] In practice, by adjusting the length of the elongated hole 4011 and the stroke of the lead screw motor 502, the lifting stroke of the rear end of the seat cushion 200 can be adjusted. While pushing and pulling the first lead screw 503, the lead screw motor 502 can swing at a small angle to meet the lifting requirements of the seat basin 2.

[0072] In a preferred embodiment, a second drive unit 6 is provided on one of the frame components 1, and the mounting assembly includes a mounting plate 602 hinged to the second drive unit 6. The mounting plate 602 is fixedly connected to the support tube 4, and the second drive unit 6 can drive the front end of the seat basin 2 upward through the mounting plate 602. Here, the cooperation of the second drive unit 6, the mounting plate 602, and the support tube 4 facilitates the upward lifting of the front end of the seat basin 2, thereby improving the performance of the seat basin 2.

[0073] In terms of specific structure, such as Figures 6 to 10 As shown, relative to the sub-frame 1 equipped with the first drive unit 5, the second drive unit 6 is mounted on another sub-frame 1. To facilitate the installation of the second drive unit 6, a second mounting bracket 110 is provided on this sub-frame 1, and a second connecting member 111 is provided on the second mounting bracket 110. The second mounting bracket 110 is rotatably mounted on the front linkage rod 106 via the second connecting member 111. The second connecting member 111 here has the same structural form as the first connecting member 109 described above, and will not be described again here.

[0074] Reference Figure 11 and Figure 12 As shown in the diagram, in this embodiment, the second drive unit 6 is located at the bottom of the second mounting bracket 110. The mounting plate 602 is generally ">" shaped with its pointed end facing forward. The pointed end of the mounting plate 602 has a connecting hole 603 for connecting with the support tube 4. Specifically, the mounting plate 602 is connected to the support tube 4 by welding to the inner wall of the connecting hole 603. The top end of the mounting plate 602 is hinged to the second mounting bracket 110, and the bottom end is hinged to the drive end of the second drive unit 6. The drive end of the second drive unit 6 can apply a force to the bottom end of the mounting plate 602, causing the mounting plate 602 to rotate around its hinge point with the second mounting bracket 110 as an axis, thereby driving the front end of the base 101 to rise and fall through the support tube 4. To improve the structural strength of the mounting plate 602, reinforcing ribs can also be provided on the mounting plate 602.

[0075] In addition, such as Figure 6 As shown, the mounting assembly also includes a connecting plate 104 hinged to the first mounting bracket 108 relative to the mounting plate 602, and the connecting plate 104 extends forward and is welded to the support tube 4. The hinge points of the connecting plate 104 and the first mounting bracket 108, and the hinge points of the mounting plate 602 and the second mounting bracket 110, are both located on the axis of rotation of the support tube 4. The support tube 4 has good installation and usage stability thanks to the mounting plate 602 and the connecting plate 104.

[0076] In specific implementation, the second drive unit 6 in this embodiment can be the first motor, such as... Figures 11 to 13 As shown, the first motor's power output shaft is equipped with a worm gear 604, a worm wheel 605 connected to the worm gear 604, and a second lead screw 601 that passes through and is screwed to the worm wheel 605. The driving end of the second drive unit 6 specifically refers to the front end of the second lead screw 601, which is hinged to the bottom end of the mounting plate 602. The first motor drives the worm wheel 605 to rotate via the worm gear 604. At this time, the second lead screw 601 can move back and forth, thereby driving the mounting plate 602 to rotate around its hinge point with the second mounting bracket 110, and then driving the front end of the seat 2 to rise and fall via the support tube 4 and the front mounting block 401.

[0077] In this embodiment, the integration of the worm gear 604, worm wheel 605, and second lead screw 601 within the second drive unit 6 achieves a high degree of integration, resulting in a relatively small space occupation and facilitating optimized spatial layout. The first motor, acting as a power source, provides stable torque output. Through the transmission of the worm gear 604 and worm wheel 605, the power of the first motor is effectively transmitted to the second lead screw 601. Furthermore, the transmission between the worm wheel 605 and worm gear 604 has a large transmission ratio, which reduces the speed of the first motor while amplifying the torque, enabling the second lead screw 601 to withstand a larger load. When it is necessary to lift the front end of the seat basin 2, such as to support the weight of a heavy passenger, this structure can stably provide sufficient force to achieve the lifting and lowering of the seat basin 2, and maintains good reliability and durability during long-term use.

[0078] As a preferred structural example, each sub-frame 1 in this embodiment includes a base 101 and a side plate 102 that forms a four-bar linkage 103 mechanism with the base 101 via a connecting rod 103. A third drive unit 7, which is pulsatorically connected to the rear linkage rod 105, is provided on one side plate 102. The third drive unit 7 is used to drive the two side sub-frames 1 to swing back and forth, thereby raising and lowering the seat basin 2. Here, the arrangement of the third drive unit 7 and the four-bar linkage 103 mechanism facilitates adjustment of the seat basin 2's height, thereby improving the comfort of the seat structure. The aforementioned rear linkage rod 105 and front linkage rod 106 are specifically connected between the two side plates 102, and the first mounting bracket 108 and the second mounting bracket 110 are also provided on the corresponding side plates 102.

[0079] Furthermore, such as Figures 3 to 6As shown, the base 101 also includes a slide rail 1011 extending along the front-rear direction of the vehicle, and a slider 1012 slidably disposed in the slide rail 1011. The bottom end of each connecting rod 103 is hinged to the slider 1012, and the top end is hinged to the side plate 102. The first mounting bracket 108 is provided with clearance holes for the corresponding connecting rod 103 to pass through, so as to ensure the effectiveness of the connecting rod 103.

[0080] An exemplary structure of the third drive unit 7 is as follows: Figure 14 As shown, the third drive unit 7 includes a second motor disposed on the outer side of its side plate 102, and a gear 701 disposed on the power output end of the second motor. A connecting rod 103 corresponding to the second motor is rotatably connected to a rear linkage rod 105. The connecting rod 103 has multiple meshing teeth 1031 arranged circumferentially along the rear linkage rod 105 and meshing with the gear 701. Through the engagement of the gear 701 and the meshing teeth 1031, the second motor can drive the connecting rod 103 to rotate forward or backward, causing the two side frames 1 to swing back and forth, thereby facilitating the raising and lowering of the seat basin 2.

[0081] To limit the rotation angle of the connecting rod 103, an arc-shaped limiting hole 1032 is provided on the connecting rod 103. A fixing plate 702 located inside the connecting rod 103 is also provided on the side plate 102, and a limiting post passing through the limiting hole 1032 is provided between the fixing plate 702 and the side plate 102. The rotation angle of the connecting rod 103 is limited by the abutment between the limiting post and the end of the limiting hole 1032.

[0082] In this embodiment, when the seat structure is in use, when the lead screw motor 502 receives an electrical signal, the length of the first lead screw 503 located between the transmission plate 107 and the lead screw motor 502 decreases. This causes the rear mounting tube 301 to rotate around the rear linkage rod 105 via the transmission plate 107, resulting in the rear part of the seat basin 2 also making a circular motion around the rear linkage rod 105. During the first half of the first stroke, the rear part of the seat basin 2 is pushed by the two rear mounting blocks 302, causing the rear part of the seat basin 2 to move upwards and forwards simultaneously. The rear part of the seat cushion 200 moves away from the backrest 300, and the front mounting block 401 rotates relative to the support tube 4 while sliding forward.

[0083] During the second half of the movement of the seat basin 2, the rear part of the seat basin 2 is pulled by the rear mounting block 302. The rear part of the seat basin 2 moves upward and backward simultaneously, while the front mounting block 401 rotates relative to the support tube 4 and slides backward. At this time, the rear part of the seat cushion 200 approaches the backrest 300, reducing the gap between the seat cushion 200 and the backrest 300. When the seat basin 2 is raised to its highest position, it is limited by the limiting protrusion 5032 on the lead screw motor 502 (this state is the driver's resting state, and the vehicle is not in motion). When the seat cushion 200 is at its lowest position, it is limited by the abutment of the limiting plate 112 and the transmission plate 107. The reason for not using the lead screw motor 502 for limitation at this time is to prevent the lead screw motor 502 from being stressed during seat use, thus avoiding fatigue.

[0084] In this embodiment, the second motor drives the mounting plate 602 to rotate, which in turn lifts the support tube 4. As the seat basin 2 rotates relative to the support tube 4, the support tube 4 rotates and slides within the front mounting block 401, thus lifting the seat cushion 200 forward (the first drive unit 5 and the second drive unit 6 cannot be used simultaneously). Furthermore, when the height of the frame 100 needs adjustment, the connecting rod 103 is rotated by the third drive unit 7.

[0085] In this embodiment, the seat structure, through the cooperation of the first drive unit 5 and the rear mounting seat 3, enables the seat basin 2 to have a rear lifting function; through the cooperation of the second drive unit 6, the support tube 4, and the front mounting block 401, it enables the seat basin 2 to have a front lifting function; and through the cooperation of the third drive unit 7 and the connecting rod 103, the entire seat basin 2 can be raised and lowered. Furthermore, the first drive unit 5, the second drive unit 6, and the third drive unit 7 operate independently, providing good flexibility in use. In this embodiment, the mounting mechanism and each drive structure are all located within the frame 100, which facilitates full utilization of the seat's internal space without increasing the seat size. While adding seat functionality, it does not affect the use of other functions, thus possessing good versatility.

[0086] In addition, during the lifting process of the seat cushion 200, the seat cushion 200 tends to move forward in the first half of the travel (first travel), which helps to reduce the movement interference between the seat cushion 200 and the foam of the backrest 300. In the second half of the travel (second travel), the seat cushion 200 tends to move backward, which helps to reduce the gap between the seat cushion 200 and the foam of the backrest 300. This helps to meet the comfort of the seat structure in the lying position and also helps to enhance the refinement of the seat.

[0087] Example 2

[0088] This embodiment relates to a vehicle equipped with a seat structure as described above.

[0089] The vehicle described in this embodiment improves user comfort by setting up the seat structure as described above.

[0090] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A seat structure, characterized in that, include: Skeleton (100); The seat basin (2) is mounted on the frame (100) by a mounting mechanism, and the rear end of the seat basin (2) can rotate relative to the frame (100), and the front end of the seat basin (2) can move back and forth relative to the frame (100). The first drive unit (5) is disposed on the frame (100) and is connected to the mounting mechanism in a transmission manner. The first drive unit (5) can drive the mounting mechanism to move the seat (2) forward in a first movement stroke and to lift the rear end of the seat (2) backward and upward in a second movement stroke.

2. The seat structure according to claim 1, characterized in that: The frame (100) includes sub-frames (1) arranged opposite to each other on the left and right sides, and a rear linkage rod (105) connecting the rear ends of the sub-frames (1) on both sides. The mounting mechanism includes a rear mounting seat (3) rotatably mounted on the rear linkage rod (105) via a transmission plate (107), the rear mounting seat (3) being connected to the rear end of the seat basin (2), and the driving end of the first driving part (5) being hinged to the transmission plate (107).

3. The seat structure according to claim 2, characterized in that: The rear mounting base (3) includes a rear mounting tube (301) arranged parallel to the rear linkage rod (105), and a rear mounting block (302) provided on the rear mounting tube (301); The rear mounting tube (301) is connected to the transmission plate (107), the rear mounting block (302) is connected to the rear end of the seat (2), and in the initial state, the rear mounting tube (301) is located in front of the rear linkage rod (105), and the hinge point between the drive end of the first drive part (5) and the transmission plate (107) is located behind the rear linkage rod (105).

4. The seat structure according to claim 2, characterized in that: The first drive unit (5) includes a fixed seat (501) disposed on one of its sub-frames (1), and a lead screw motor (502) disposed on the fixed seat (501); The lead screw motor (502) can swing relative to the fixed base (501) within a preset range, and the lead screw of the lead screw motor (502) is hinged to the transmission plate (107).

5. The seat structure according to claim 2, characterized in that: The installation mechanism includes a support tube (4) that is rotatably mounted on the sub-frame (1) via an installation component, and a front mounting block (401) sleeved outside the support tube (4); The front mounting block (401) is connected to the front end of the seat (2) and can slide back and forth relative to the support tube (4).

6. The seat structure according to claim 5, characterized in that: The first of the sub-frames (1) is provided with a second driving part (6), and the mounting assembly includes a mounting plate (602) that is hinged to the second driving part (6); The mounting plate (602) is fixedly connected to the support tube (4), and the second driving part (6) can drive the front end of the seat (2) to rise upward through the mounting plate (602).

7. The seat structure according to claim 2, characterized in that: Each of the sub-frames (1) includes a base (101) and a side plate (102) that forms a four-bar linkage (103) mechanism with the base (101) via a connecting rod (103). A third drive unit (7) is provided on one of the side plates (102) and is connected to the rear linkage rod (105) for transmission. The third drive unit (7) is used to drive the two sub-frames (1) on both sides to swing back and forth so that the seat basin (2) rises and falls. The first drive unit (5) is mounted on the front end of the side plate (102) on one side.

8. The seat structure according to any one of claims 2 to 7, characterized in that: The frame (100) is provided with a limiting part, which can abut against the mounting mechanism to limit the rotation angle of the rear end of the seat (2).

9. The seat structure according to claim 8, characterized in that: The limiting part includes a limiting plate (112) disposed between the two side sub-frames (1), and the transmission plate (107) can abut against the limiting plate (112) to limit the rotation angle of the rear end of the seat (2).

10. A vehicle, characterized in that: The vehicle is equipped with a seat structure as described in any one of claims 1 to 9.

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