Automobile seat with cushion linkage rear lifting function

Abstract

The utility model relates to the technical field of automobile seats, and discloses an automobile seat with a cushion linkage rear lifting function, comprising: a seat part comprising a skeleton and a cushion arranged on the skeleton; the backrest is rotatably arranged on the seat part, and the backrest can rotate backwards to a lying position relative to the seat part; a driving support is arranged on the backrest, and a sliding groove is formed in the driving support. The lifting bracket is rotatably arranged on the framework; one end of the connecting rod is rotatably connected with the lifting support, and the other end of the connecting rod is provided with a protruding structure which is arranged in the sliding groove in a penetrating mode; when the backrest overturns backwards and lies down, after the end of the sliding groove abuts against the protruding structure, the driving support can abut against and push the protruding structure, the connecting rod drives the lifting support to rotate, and the rear end of the cushion is lifted upwards by the lifting support. The automobile seat cushion rear lifting function realization structure has the advantages that the automobile seat cushion rear lifting function realization structure is simple, the cost is low, the lifting rigidity is good, and the lifting response is fast.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and more particularly to an automotive seat with a cushion-linked lifting function. Background Art

[0002] Some car seats have reclining backrests for passengers to rest. However, when the backrest is reclined, a significant height difference can occur between the backrest and the rear end of the seat cushion. This difference can cause excessive lumbar support for the passenger, affecting comfort. To reduce this height difference and improve passenger comfort, a lifting mechanism is installed at the rear end of the seat cushion. When the backrest is reclined, this mechanism raises the rear end of the seat cushion, reducing the height difference between the backrest and the backrest.

[0003] Existing car seats with rear seat cushion lifting function mainly include the following implementation methods: (1) A rear seat cushion lifting motor is installed at the front of the seat cushion to lift the rear of the seat cushion. In this method, the motor method is expensive and the lifting stroke is insufficient; (2) A four-bar linkage + double lever drive method is used to lift the rear of the seat cushion when the backrest is reclined. In this method, the structure of the four-bar linkage + double lever is complex, with many parts, and the cost is high; (3) An air bag is installed at the rear of the seat cushion. When the backrest is reclined, the air bag is filled with gas, which lifts the rear of the seat cushion. In this method, the air bag has a long response time, slow response, and poor rigidity. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by the present invention is to propose a car seat with a simple structure, low cost, good lifting rigidity and fast lifting response, and a seat cushion linkage lifting function.

[0005] The technical solution adopted by this invention to solve its technical problem is to propose a car seat with a cushion-linked lifting function, comprising:

[0006] A seat, comprising a frame and a cushion, the cushion being disposed on the frame;

[0007] A backrest is rotatably mounted on the seat, and the backrest can rotate rearward relative to the seat to a reclining position; a drive bracket is provided on the backrest, and the drive bracket is provided with a sliding groove;

[0008] A lifting bracket and a connecting rod are provided. The lifting bracket is rotatably mounted on the frame. One end of the connecting rod is rotatably connected to the lifting bracket, and the other end of the connecting rod is provided with a protruding structure that passes through the sliding groove.

[0009] When the backrest reclines, the end of the slide groove abuts against the protruding structure, and the drive bracket pushes against the protruding structure, causing the connecting rod to drive the lifting bracket to rotate, and the rear end of the seat cushion is lifted upward by the lifting bracket.

[0010] Furthermore, the slide groove is an arc-shaped groove. When one end of the slide groove abuts against the protruding structure, the drive bracket can drive the lifting bracket to rotate clockwise through the connecting rod.

[0011] When the backrest rotates forward from the reclining position, the load acting on the lifting bracket can drive the lifting bracket to rotate counterclockwise, thereby resetting the lifting bracket.

[0012] Furthermore, when the backrest is rotated and adjusted relative to the seat within a preset angle range, the relative position of the protruding structure in the slide groove changes, and the connecting rod and the protruding structure do not move.

[0013] Furthermore, a rear horizontal tube is provided on the frame near the rear end of the seat cushion, and the lifting bracket is installed on the rear horizontal tube and can rotate along the rear horizontal tube.

[0014] Furthermore, the lifting support includes a left support, a right support, and a lifting horizontal tube. The left support is connected to one end of the lifting horizontal tube, and the right support is connected to the other end of the lifting horizontal tube. The rear horizontal tube is sequentially inserted into the left support and the right support. One end of the connecting rod is rotatably connected to the left support or the right support.

[0015] Furthermore, both the left support and the right support include a first frame and a second frame, which are detachably connected by bolts or screws.

[0016] Both the first frame and the second frame have an opening, and the openings on the first frame and the second frame together form a through hole through which the rear horizontal tube passes.

[0017] Once the bolts or screws are removed, the openings in both the first and second frames can be detached from the rear horizontal tube.

[0018] Furthermore, bushings are provided between the first frame and the rear horizontal tube, and between the second frame and the rear horizontal tube.

[0019] Furthermore, the lifting cross tube is provided with multiple suspension springs, the suspension springs are hooked onto the lifting cross tube, and the seat cushion is disposed on the suspension springs.

[0020] Furthermore, the drive bracket is integrally formed with the backrest; or the drive bracket and the backrest are separate components, and the drive bracket is fixedly connected to the backrest.

[0021] Furthermore, the frame includes a base frame, a first support, a second support, and an upper support.

[0022] One end of the first bracket is hinged to the base frame, and the other end of the first bracket is hinged to the upper bracket; the second bracket is fixedly connected to the rear horizontal tube, and the second bracket is hinged to the base frame; the rear horizontal tube is rotatably connected to the upper bracket;

[0023] The upper support is equipped with a lead screw motor, and the telescopic rod of the lead screw motor is rotatably connected to the second support; when the lead screw motor drives the telescopic rod to extend or retract, it can drive the upper support to lift or lower.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] In this invention, a drive bracket is configured on the backrest, and the drive bracket has a sliding groove. A lifting bracket is rotatably positioned near the rear end of the seat. The lifting bracket and the drive bracket are connected by a connecting rod, with a protruding structure on the connecting rod passing through the sliding groove. When the backrest is folded back, the drive bracket moves, causing the end of the sliding groove to abut against the protruding structure. As the backrest continues to fold back, the drive bracket pushes against the protruding structure (i.e., against the connecting rod), causing the connecting rod to push against the lifting bracket. The lifting bracket rotates around the rear cross tube, and the lifting cross tube drives the rear end of the suspension spring to rise, thus raising the rear end of the seat cushion. This reduces the height difference between the rear end of the seat cushion and the backrest, improving passenger lumbar comfort. In this car seat, the lifting movement of the rear end of the seat cushion and the rotation of the backrest can be linked through the drive bracket, connecting rod, and lifting bracket. The structure is simple, low-cost, and the rear lifting response of the seat cushion is fast and the rigidity is high. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of the car seat (without the seat cushion) of the present invention;

[0027] Figure 2 for Figure 1 A structural diagram from another perspective;

[0028] Figure 3 This is an assembly diagram of the rear horizontal tube, lifting bracket, connecting rod, and drive bracket;

[0029] Figure 4 for Figure 3 A schematic diagram of the structure after removing the horizontal tube;

[0030] Figure 5This is a schematic diagram of the skeleton structure;

[0031] Figure 6 for Figure 5 A structural diagram from another perspective.

[0032] In the picture:

[0033] 1. Seat; 10. Frame; 101. Rear cross tube; 102. Base frame; 103. First support; 104. Second support; 105. Upper support; 11. Screw motor; 110. Telescopic rod;

[0034] 2. Backrest; 20. Drive bracket; 201. Slide rail;

[0035] 3. Lifting support; 30. Bushing; 31. Left support; 32. Right support; 33. Lifting horizontal pipe; 310. Through hole; 311. First frame; 312. Second frame;

[0036] 4. Connecting rod; 40. Raised structure. Detailed Implementation

[0037] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0038] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0042] like Figure 1 and Figure 4 As shown, a car seat with a cushion-linked lifting function mainly includes: a seat 1, a backrest 2, a lifting bracket 3, and a linkage 4. During use, when the backrest 2 of the car seat reclines to a fully reclined mode, the backrest 2 drives the lifting bracket 3 to rise, thereby lifting the rear end of the seat cushion. This linkage achieves a simple, low-cost, and rigid structure with a fast lifting response.

[0043] Seat 1 includes a frame 10 and a seat cushion (not shown in the figure). The seat cushion is set on the frame 10 and includes components such as foam and outer skin. When in use, passengers can sit directly on the seat cushion.

[0044] The backrest 2 is rotatably mounted on the seat 1, and can rotate rearward relative to the seat 1 to a reclining position. Specifically, the backrest 2 can be angled relative to the seat 1 to change the passenger's posture and improve passenger comfort. A drive bracket 20 is mounted on the backrest 2, and the drive bracket 20 has a sliding groove 201, preferably an arc-shaped groove. In this embodiment, the drive bracket 20 and the backrest 2 are integrally formed, which simplifies the number of parts. The drive bracket 20 is part of the structure of the backrest 2, facilitating assembly and simplifying the structure. Alternatively, the drive bracket 20 can be separately mounted from the backrest 2, and the drive bracket 20 and the backrest 2 can be detachably fixed together by bolts. Separate mounting reduces the molding difficulty of the backrest 2, and the drive bracket 20 is also easy to assemble and disassemble.

[0045] The lifting bracket 3 and connecting rod 4 are included. The lifting bracket 3 is rotatably mounted on the frame 10. A rear horizontal tube 101 is disposed on the frame 10. The lifting bracket 3 is rotatably mounted on the rear horizontal tube 101. When the lifting bracket 3 rotates upward around the rear horizontal tube 101, the rear end of the seat cushion can be lifted upward. When the lifting bracket 3 rotates downward around the rear horizontal tube 101, the rear end of the seat cushion descends. One end of the connecting rod 4 is rotatably connected to the lifting bracket 3, and the other end of the connecting rod 4 is provided with a protruding structure 40. The protruding structure 40 passes through the sliding groove 201. In this embodiment, the protruding structure 40 is preferably a bolt. Of course, a protruding column-type protruding structure 40 can also be used.

[0046] In actual use, when the backrest 2 is folded back, the end of the slide groove 201 abuts against the protruding structure 40, and the drive bracket 20 can push against the protruding structure 40, causing the connecting rod 4 to drive the lifting bracket 3 to rotate, and the rear end of the seat cushion is lifted upward by the lifting bracket 3.

[0047] In this embodiment, a drive bracket 20 is configured on the backrest 2, and the drive bracket 20 is provided with a sliding groove 201. The lifting bracket 3 is rotatably disposed at a position near the rear end of the seat 1. The lifting bracket 3 and the drive bracket 20 are connected by a connecting rod 4, and the protruding structure 40 on the connecting rod 4 passes through the sliding groove 201. When the backrest 2 is folded back, the drive bracket 20 moves, causing the end of the sliding groove 201 to abut against the protruding structure 40. As the backrest 2 continues to fold back, the drive bracket 20 pushes against the protruding structure 40 (i.e., against the connecting rod 4), causing the connecting rod 4 to push against the lifting bracket 3. The lifting bracket 3 rotates around the rear cross tube 101 and lifts upward, thereby raising the rear end of the seat cushion to reduce the height difference between the rear end of the seat cushion and the backrest 2 and improve the comfort of the passenger's lower back. In this car seat, the lifting movement of the rear end of the seat cushion and the rotation of the backrest 2 can be linked by the drive bracket 20, the connecting rod 4, and the lifting bracket 3. The structure is simple, the cost is low, and the rear lifting of the seat cushion is fast and rigid.

[0048] Furthermore, in this embodiment, when one end of the slide 201 abuts against the protruding structure 40, the drive bracket 20 can drive the lifting bracket 3 to rotate clockwise via the connecting rod 4. At this time, the rear end of the seat cushion is lifted upward by the lifting bracket 3. When the backrest 2 rotates forward from the reclining position (for example, when the passenger needs to switch from a reclining posture to a sitting posture), the load acting on the lifting bracket 3 (such as the passenger's own weight and the pressing force of the seat cushion cover) can drive the lifting bracket 3 to move downward, so that the lifting bracket 3 rotates counterclockwise and resets. At this time, the rear end of the seat cushion descends together with the lifting bracket 3. When the backrest 2 rotates relative to the seat 1 within a preset angle range, for example, this angle range can be ±15 degrees from the upright position, the backrest 2 performs a comfort rotation adjustment. The relative position of the protruding structure 40 in the slide groove 201 changes, and the connecting rod 4 and the protruding structure 40 do not move. That is, during this comfort adjustment process, the protruding structure 40 moves between the positions at both ends of the slide groove 201, and the slide groove 201 does not push against the protruding structure 40 through its end. In other words, the connecting rod 4 and the protruding structure 40 do not move at this time. The comfort adjustment of the backrest 2 does not require driving the connecting rod 4 and the protruding structure 40, resulting in less movement loss.

[0049] In this embodiment, a rear horizontal tube 101 is provided on the frame 10 near the rear end of the seat cushion. The lifting bracket 3 is installed on the rear horizontal tube 101 and can rotate along the rear horizontal tube 101. The lifting bracket 3 includes a left bracket 31, a right bracket 32, and a lifting horizontal tube 33. The left bracket 31 is connected to one end of the lifting horizontal tube 33, and the right bracket 32 ​​is connected to the other end of the lifting horizontal tube 33. The rear horizontal tube 101 passes through the left bracket 31 and the right bracket 32 ​​in sequence. One end of the connecting rod 4 is rotatably connected to the left bracket 31 or the right bracket 32. Specifically, a drive bracket 20 is provided on each side of the backrest 2. Each drive bracket 20 is connected to a connecting rod 4. One connecting rod 4 is rotatably connected to the left bracket 31, and the other connecting rod 4 is rotatably connected to the right bracket 32. This ensures that when the backrest 2 drives the lifting bracket 3 to move, the two ends of the lifting bracket 3 are balanced by force. That is, when the rear end of the seat cushion is lifted upward, the force is balanced, resulting in good passenger comfort.

[0050] Both the left support 31 and the right support 32 include a first frame 311 and a second frame 312. The first frame 311 and the second frame 312 are detachably connected by bolts or screws, ensuring easy assembly and disassembly of the left support 31 and the right support 32 to the rear horizontal tube 101. Furthermore, both the first frame 311 and the second frame 312 have an opening, which is approximately semi-circular. The openings of the first frame 311 and the second frame 312 together form a through hole 310 for the rear horizontal tube 101 to pass through. When the bolts or screws are removed, the openings of the first frame 311 and the second frame 312 can be detached from the rear horizontal tube 101. In other words, the left support 31 and the right support 32 are configured as separate first frames 311 and second frames 312, connected by bolts, facilitating the assembly of the lifting support 3 onto the rear horizontal tube 101. Bushings 30 are provided between the first frame 311 and the rear cross tube 101, and between the second frame 312 and the rear cross tube 101. Multiple suspension springs are provided on the lifting cross tube 33, and the seat cushion is placed on the suspension springs.

[0051] In actual use, when the backrest 2 is folded back and reclined, the upper end of the slide groove 201 abuts against the protruding structure 40. If the backrest 2 continues to fold back, the drive bracket 20 will push against the protruding structure 40, that is, push against the connecting rod 4. The connecting rod 4 pushes down against the lifting bracket 3, and the lifting bracket 3 rotates upward around the rear horizontal tube 101, lifting the rear end of the seat cushion upward.

[0052] like Figures 5-6As shown, the frame 10 of this embodiment includes a base frame 102, a first support 103, a second support 104, and an upper support 105, forming a four-bar linkage. One end of the first support 103 is hinged to the base frame 102, and the other end is hinged to the upper support 105. The second support 104 is welded and fixed to the rear horizontal tube 101, and is hinged to the base frame 102. The rear horizontal tube 101 and the upper support 105 are rotatably connected. A lead screw motor 11 is mounted on the upper support 105; specifically, an anti-submarine tube is mounted on the upper support 105, and a motor bracket is mounted on the anti-submarine tube. The lead screw motor is rotatably mounted on the motor bracket. The telescopic rod 110 of the lead screw motor 11 is rotatably connected to the second bracket 104. When the lead screw motor 11 drives the telescopic rod 110 to extend or retract through the lead screw, it can drive the upper bracket 105 to rise or sink, thereby realizing the height adjustment of the seat cushion and improving passenger comfort.

[0053] In this solution, the seat cushion lifting function of the car seat has a simple structure and low cost; it also has good lifting rigidity and fast lifting response; it can reduce the load demand of the backrest 2 angle adjustment motor, especially the motor load when the backrest 2 returns from the reclining position.

Claims

1. A car seat with a seat cushion linkage rear lifting function, characterized in that ,include: A seat portion, comprising a frame and a cushion, wherein the cushion is arranged on the frame; A backrest is rotatably arranged on the seat, and the backrest can be rotated backward relative to the seat to a lying position; a driving bracket is arranged on the backrest, and a sliding groove is provided on the driving bracket; A lifting bracket and a connecting rod, wherein the lifting bracket is rotatably arranged on the frame; one end of the connecting rod is rotatably connected to the lifting bracket, and the other end of the connecting rod is provided with a protruding structure, and the protruding structure is inserted into the sliding groove; When the backrest is folded back and laid down, after the end of the slide slot abuts against the protruding structure, the driving bracket can push the protruding structure, so that the connecting rod drives the lifting bracket to rotate, and the rear end of the seat cushion is lifted upward by the lifting bracket.

2. The automobile seat with seat cushion linkage rear lifting function according to claim 1, characterized in that: The slide groove is arranged in an arc-shaped groove, and when one end of the slide groove abuts against the protruding structure, the driving bracket can drive the lifting bracket to rotate clockwise through the connecting rod; When the backrest rotates forward from the lying position, the load acting on the lifting bracket can drive the lifting bracket to rotate counterclockwise, so that the lifting bracket is reset.

3. The automobile seat with seat cushion linkage rear lifting function according to claim 1 or 2, characterized in that: When the backrest is rotated and adjusted relative to the seat within a preset angle range, the relative position of the protruding structure in the sliding groove changes, and the connecting rod and the protruding structure do not move.

4. The automobile seat with seat cushion linkage rear lifting function according to claim 1, characterized in that: A rear transverse tube is arranged on the frame near the rear end of the seat cushion, and the lifting bracket is installed on the rear transverse tube and can rotate along the rear transverse tube.

5. The automobile seat with seat cushion linkage rear lifting function according to claim 4, characterized in that: The lifting bracket includes a left bracket, a right bracket and a lifting cross tube, the left bracket is connected to one end of the lifting cross tube, the right bracket is connected to the other end of the lifting cross tube, and the rear cross tube is sequentially inserted into the left bracket and the right bracket; one end of the connecting rod is rotatably connected to the left bracket or the right bracket.

6. The automobile seat with seat cushion linkage rear lifting function according to claim 5, characterized in that: The left bracket and the right bracket each include a first frame body and a second frame body, and the first frame body and the second frame body are detachably connected by bolts or screws; The first frame and the second frame each have an opening, and the openings on the first frame and the second frame are mutually surrounded to form a through hole for the rear cross tube to pass through; When the bolts or screws are removed, the opening of the first frame and the opening of the second frame can be detached from the rear cross tube.

7. The automobile seat with seat cushion linkage rear lifting function according to claim 6, characterized in that: Bushings are provided between the first frame and the rear cross tube, and between the second frame and the rear cross tube.

8. The automobile seat with seat cushion linkage rear lifting function according to claim 5, characterized in that: The lifting cross tube is provided with a plurality of suspension springs, the suspension springs are hung on the lifting cross tube, and the seat cushion is arranged on the suspension springs.

9. The automobile seat with seat cushion linkage rear lifting function according to claim 1, characterized in that: The driving bracket and the backrest are integrally arranged; or the driving bracket and the backrest are separately arranged, and the driving bracket and the backrest are detachably fixedly connected.

10. The automobile seat with seat cushion linkage rear lifting function according to claim 4, characterized in that: The frame includes a bottom frame, a first bracket, a second bracket and an upper bracket. One end of the first bracket is hinged to the bottom frame, and the other end of the first bracket is hinged to the upper bracket; the second bracket is fixedly connected to the rear cross tube, and the second bracket is hinged to the bottom frame; the rear cross tube is rotatably connected to the upper bracket; The upper bracket is provided with a screw motor, and the telescopic rod of the screw motor is rotatably connected to the second bracket; when the screw motor drives the telescopic rod to telescope, the upper bracket can be driven to lift or sink.

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