A low-sitting zero-gravity car seat

Abstract

The present application relates to a low-sitting zero-gravity car seat, comprising long slide rails on the left and right sides and a seat frame bracket for mounting a seat cushion. Short slide rails are correspondingly mounted at the front positions of the long slide rails on the left and right sides. A force-applying member is slidably mounted on the short slide rails. The force-applying member is connected to the front position of the seat frame bracket via a front linkage bracket, and the rear position of the seat frame bracket is connected to the long slide rail via a rear linkage bracket. A first linkage point is formed between the front linkage bracket and the force-applying member, a second linkage point is formed between the front linkage bracket and the front position of the seat frame bracket, and a third linkage point is formed between the rear position of the seat frame bracket and the rear linkage bracket. The present application can be used in situations where the drive mechanism is difficult to arrange and occupies a large amount of space.

Description

Technical Field

[0001] The present application relates to the field of automobile seats, and in particular to a zero-gravity automobile seat with a low sitting position. Background Art

[0002] With the development of the times, cars have gradually become an indispensable means of transportation in people's lives. At the same time, people have begun to pursue more driving comfort and high configuration of vehicles. For vehicle driving, in addition to the overall safety and quietness of the vehicle, the comfort of the vehicle seats is also extremely important, especially today's new energy cars, SUVs, MPVs and other vehicles, which have higher demands for seat comfort. With the rapid development of smart cockpit technology, consumers have put forward higher and higher requirements for the comfort and intelligence of the cockpit. More and more car companies are launching new models equipped with "zero gravity seats".

[0003] The block values ​​of the zero-gravity seats currently on the market are very high, and the linkage mechanisms are very complex. The most common ones are the screw motor-driven "zero-gravity seats".

[0004] For example, Chinese patent publication number CN208682692U discloses a zero-gravity seat for automobiles, in which the front end of the seat frame is connected to a leg rest through a flip mechanism, and the rear end is installed with a seat back through an angle adjuster. The rear end of the seat frame is hinged to the mounting base below, and an inclination adjustment mechanism is provided between the front end and the mounting base. The inclination adjustment mechanism includes a threaded seat hinged to the lower side of the seat frame, a gear box hinged to the upper side of the mounting base, and a screw rod with one end installed in the gear box and the other end threadedly installed on the threaded seat. The gear box is equipped with a turbine and a worm that mesh with each other, wherein the turbine is mounted on the screw rod, and the worm is connected to a drive motor at the end away from the turbine meshing.

[0005] Another example is a zero-gravity seat with Chinese patent publication number CN114274848A, which includes a seat, a pair of slide rails and a pair of seat brackets. The seat is installed on the pair of slide rails through a pair of seat brackets. The front end of the seat cushion bracket in the seat is hinged to the pair of seat brackets, and a seat rear tube is screwed to the rear end of the seat cushion bracket. It also includes at least one electric screw mechanism. The motor in the electric screw mechanism is installed on the seat bracket. The screw in the electric screw mechanism directly drives the seat rear tube up and down through the screw nut, and then drives the rear end of the seat cushion frame to move up and down, thereby realizing the rearward tilt of the seat.

[0006] Regarding the above-mentioned existing solutions, the inventor believes that although this method can freely adjust the lever arm pushed by the screw to drive the tilt angle of the seat, it is not easy to arrange on seats with low block values, or it takes up more space, which undoubtedly increases the waste of space for the interior space of the vehicle. Summary of the Invention

[0007] In order to improve the situation in the above-mentioned existing solutions where the drive mechanism is difficult to arrange and occupies a large amount of space, the present application provides a low-sitting zero-gravity car seat.

[0008] This application provides a low-sitting zero-gravity car seat, which adopts the following technical solutions:

[0009] A low-sitting zero-gravity car seat comprises long slide rails on left and right sides and a seat frame bracket for mounting a seat cushion, short slide rails are correspondingly mounted at the front positions of the long slide rails on the left and right sides, a force-applying member is slidingly arranged on the short slide rails, the force-applying member is connected to the front position of the seat frame bracket through a front linkage bracket, and the rear position of the seat frame bracket is connected to the long slide rail through a rear linkage bracket; a first linkage point is formed between the front linkage bracket and the force-applying member, a second linkage point is formed between the front linkage bracket and the front position of the seat frame bracket, and a third linkage point is formed between the rear position of the seat frame bracket and the rear linkage bracket.

[0010] Optionally, a short slide rail bracket is fixedly installed between the front positions of the long slide rails on the left and right sides, and the short slide rail bracket includes a short slide rail mounting portion and a long slide rail fixing portion, and the short slide rail mounting portion and the long slide rail fixing portion are connected by a curved transition section, and a short slide rail is fixedly installed on the short slide rail mounting portion, and the long slide rail fixing portion is fixedly installed to the long slide rail; a driving device for driving the force-applying member to slide along the short slide rail is provided between the front positions of the two short slide rails.

[0011] Optionally, the driving device includes a central driving motor and a steering transmission mechanism, the two ends of the central driving motor are respectively connected to a transmission shaft, the two transmission shafts are respectively connected to the power input ends of the corresponding steering transmission mechanism, and the power output end of the rotation transmission mechanism is connected to a screw rod arranged on the short slide rail; the force-applying member is driven to slide along the short slide rail by the rotation of the screw rod.

[0012] Optionally, the rotation transmission mechanism includes a gearbox, a turbine, and a worm. The turbine and the worm are engaged with each other and installed in the gearbox. The turbine corresponds to the power input end, and the worm corresponds to the power output end.

[0013] Optionally, the force applying member includes a sliding seat driven by a screw rod and a mounting bracket fixedly mounted on the sliding seat, the front linkage bracket is hinged to the mounting bracket, and a first linkage point is formed at the hinge point between the front linkage bracket and the mounting bracket.

[0014] Optionally, the front linkage bracket is hinged to the front side of the seat frame bracket, and the hinge between the front linkage bracket and the front side of the seat frame bracket forms a second linkage point.

[0015] Optionally, the rear side position of the seat frame bracket is hinged to the upper side position of the rear linkage bracket, and the hinge between the rear side position of the seat frame bracket and the upper side position of the rear linkage bracket forms a third linkage point; the lower side position of the seat frame bracket is fixedly installed on the long slide rail.

[0016] Optionally, a torsion bar is provided on the seat frame bracket, one end of the torsion bar is provided at the third linkage point, and the other end is provided at a position at the third linkage point close to the front side of the seat frame bracket.

[0017] Optionally, the connecting line between the second linkage point and the third linkage point is set to L1. When the force-applying member drives the seat frame bracket to lift through the first linkage point, the second linkage point forms an arc displacement around the third linkage point as the center of the circle, and the lifting angle of L1 relative to the initial position is 8°-20°.

[0018] Optionally, the lifting angle of L1 relative to the initial position is 15°-20°.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. By placing the force-applying member in front and the entire movement process being a sliding operation between the force-applying member and the slide rail, the operation reliability is high, and the entire structure is located between the slide rail and the seat frame bracket of the seat cushion, so that the utilization rate of the entire space is high, and the overall height of the entire seat is relatively low, which well meets the requirement of a low sitting posture. At the same time, by utilizing the mutual cooperation between the first linkage point, the second linkage point, and the third linkage point, the seat can be easily rotated around the third linkage point, and the second linkage point can be lifted, which effectively avoids the limitations of the layout and realizes a zero-gravity seat with a low sitting posture.

[0021] 2. By utilizing the setting of long and short slide rails, compared with the traditional single motor adjustment, the synchronization of seats during driving is well achieved, and seat failures caused by insufficient synchronization are avoided, thereby improving the riding experience.

[0022] 3. The use of torsion bars effectively improves the adjustment efficiency of the seat, making the seat rotate more efficiently during adjustment.

[0023] 4. Through the linkage of the first linkage point, the second linkage point and the third linkage point, the seat can achieve a better tilt angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a low-sitting car zero-gravity seat according to an embodiment of the present application.

[0025] Figure 2 This is a schematic diagram of a partially exploded structure of a low-sitting zero-gravity car seat according to an embodiment of the present application.

[0026] Figure 3 It is a structural schematic diagram of a short slide rail bracket of a low-sitting zero-gravity car seat according to an embodiment of the present application.

[0027] Explanation of the accompanying drawings: 1. Long slide rail; 2. Seat frame bracket; 3. Short slide rail; 4. Short slide rail bracket; 5. Central drive motor; 6. Transmission shaft; 7. Screw rod; 8. Gear box; 9. Front linkage bracket; 10. Rear linkage bracket; 11. First linkage point; 12. Second linkage point; 13. Third linkage point; 14. Sliding seat; 15. Mounting bracket; 16. Torsion bar; 17. Short slide rail mounting portion; 18. Long slide rail fixing portion; 19. Curved transition section. DETAILED DESCRIPTION

[0028] The following is combined with Figures 1 to 3 This application is described in further detail.

[0029] The embodiment of the present application discloses a low-sitting zero-gravity car seat. Figures 1 to 3 , including long slide rails 1 on the left and right sides and a seat frame bracket 2 for installing a seat cushion, short slide rails 3 are correspondingly installed at the front positions of the long slide rails 1 on the left and right sides. In order to facilitate the installation of the short slide rails 3, short slide rail brackets 4 are generally fixedly installed between the long slide rails 1 on the left and right sides, and the short slide rails 3 can be fixedly installed on both sides of the short slide rail brackets 4 respectively. In this embodiment, the structure of the short slide rail bracket 4 can include a short slide rail mounting portion 17 and a long slide rail fixing portion 18, and the short slide rail mounting portion 17 and the long slide rail fixing portion 18 The connecting part adopts a curved transition section 19, so that after the short slide rail 3 is installed, the height can be flush with the long slide rail 1 or lower than the long slide rail 1, or the lower end surface of the short slide rail 3 is lower than the upper end surface of the long slide rail 1, the short slide rail 3 is fixedly installed on the short slide rail mounting portion 17, and the long slide rail fixing portion 18 is fixedly installed with the long slide rail 1. During installation, the long slide rail 1 and the short slide rail 3 are coordinated and arranged, so that the utilization rate of the entire space is high, the overall height of the entire seat is relatively low, and the requirement of low sitting posture is well achieved.

[0030] A driving device for driving the force-applying member to slide along the short slide rail 3 is provided between the front positions of the two short slide rails 3 mentioned above. The specific structure of the driving device is: it includes a central driving motor 5 and a steering transmission mechanism. The two ends of the central driving motor 5 are respectively connected to a transmission shaft 6. The two transmission shafts 6 are respectively connected to the power input ends of the corresponding steering transmission mechanism. The power output end of the rotation transmission mechanism is connected to a screw rod 7 provided on the short slide rail 3; the force-applying member is driven to slide along the short slide rail 3 by the rotation of the screw rod 7, and the short slide rail 3 and the force-applying member are in sliding cooperation.

[0031] The rotation transmission mechanism in this embodiment includes a gearbox 8, a turbine, and a worm. The turbine and the worm are engaged with each other and are installed in the gearbox 8. The turbine corresponds to the power input end, and the worm corresponds to the power output end. The central drive motor 5 drives the turbine to rotate through the transmission shaft 6, and the turbine drives the worm to rotate, thereby driving the screw 7 to rotate. When the screw 7 rotates, it can drive the force-applying member matched with it to slide along the short slide rail 3.

[0032] In this embodiment, the force-applying member is connected to the front position of the seat frame bracket 2 through the front linkage bracket 9, and the rear position of the seat frame bracket 2 is connected to the long slide rail 1 through the rear linkage bracket 10; a first linkage point 11 is formed between the front linkage bracket 9 and the force-applying member, a second linkage point 12 is formed between the front linkage bracket 9 and the front position of the seat frame bracket 2, and a third linkage point 13 is formed between the rear position of the seat frame bracket 2 and the rear linkage bracket 10.

[0033] The force-applying member includes a sliding seat 14 driven by a screw rod 7 and a mounting bracket 15 fixedly mounted on the sliding seat 14. The front linkage bracket 9 is hinged to the mounting bracket 15, and the hinge between the front linkage bracket 9 and the mounting bracket 15 forms the first linkage point 11 mentioned above; the front linkage bracket 9 is hinged to the front position of the seat frame bracket 2, and the hinge between the front linkage bracket 9 and the front position of the seat frame bracket 2 forms the second linkage point 12 mentioned above; the rear position of the seat frame bracket 2 is hinged to the upper position of the rear linkage bracket 10, and the hinge between the rear position of the seat frame bracket 2 and the upper position of the rear linkage bracket 10 forms the third linkage point 13 mentioned above; the lower position of the seat frame bracket 2 is fixedly mounted on the long slide rail 1.

[0034] During operation, the rotation of the screw rod 7 drives the sliding seat 14 to slide along the short slide rail 3, and the mounting seat on the sliding seat 14 moves synchronously with the sliding seat 14. At this time, the first linkage point 11 also moves horizontally following the displacement of the mounting seat; the displacement of the first linkage point 11 prompts the front linkage bracket 9 to move. Since the rear linkage bracket 10 is in a fixed state, the third linkage point 13 itself does not move, thereby causing the second linkage point 12 to move, causing it to move in an arc with the third linkage point 13 as the center of the circle. It can also be connected so that the first linkage point 11, the second linkage point 12, and the third linkage point 13 are the three vertices of a triangle, but the side length and angle of the triangle can change, but the vertex corresponding to the third linkage point 13 does not move. , when the vertex corresponding to the first linkage point 11 is displaced, the position of the vertex corresponding to the second linkage point 12 will naturally change. If the connecting line between the second linkage point 12 and the third linkage point 13 is set to L1, when the force-applying member drives the seat frame bracket 2 to lift through the first linkage point 11, the second linkage point 12 will subsequently form an arc displacement around the third linkage point 13 as the center of the circle, and the lifting angle α of L1 relative to the initial position is 8°-20°. The lifting angle here can be understood as the change in the angle between the side length between the corresponding vertices of the first linkage point 11 and the third linkage point 13 and the side length between the corresponding vertices of the second linkage point 12 and the third linkage point 13. Under normal circumstances, it is preferred that the lifting angle α of L1 relative to the initial position is 15°-20°.

[0035] In this embodiment, in order to effectively improve the adjustment efficiency of the seat and make the seat rotate more efficiently during adjustment, a torsion bar 16 is provided on the seat frame bracket 2. One end of the torsion bar 16 is provided at the third linkage point 13, and the other end is provided at the third linkage point 13 near the front side of the seat frame bracket 2. With the assistance of the torsion bar 16, the rotation efficiency of the seat cushion will be improved.

[0036] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A low-sitting zero-gravity car seat, comprising long slide rails (1) on the left and right sides and a seat frame bracket (2) for mounting a seat cushion, characterized in that: Short slide rails (3) are correspondingly installed at the front positions of the long slide rails (1) on the left and right sides. A force-applying member is slidably provided on the short slide rails (3). The force-applying member is connected to the front position of the seat frame bracket (2) through a front linkage bracket (9). The rear position of the seat frame bracket (2) is connected to the long slide rail (1) through a rear linkage bracket (10); a first linkage point (11) is formed between the front linkage bracket (9) and the force-applying member, and a second linkage point (12) is formed between the front linkage bracket (9) and the front position of the seat frame bracket (2). The rear position of the seat frame bracket (2) is connected to the long slide rail (1). A third linkage point (13) is formed between the side position and the rear linkage bracket (10); a short slide rail bracket (4) is fixedly installed between the front positions of the left and right long slide rails (1), and the short slide rail bracket (4) includes a short slide rail mounting portion (17) and a long slide rail fixing portion (18), and the short slide rail mounting portion (17) and the long slide rail fixing portion (18) are connected by a curved transition section (19), a short slide rail (3) is fixedly installed on the short slide rail mounting portion (17), and the long slide rail fixing portion (18) and the long slide rail ( 1) fixed installation; a driving device for driving a force-applying member to slide along the short slide rail (3) is provided between the front positions of the two short slide rails (3); the rear position of the seat frame bracket (2) is hinged to the upper position of the rear linkage bracket (10), and the hinge between the rear position of the seat frame bracket (2) and the upper position of the rear linkage bracket (10) forms a third linkage point (13); the lower position of the seat frame bracket (2) is fixedly installed on the long slide rail (1); a torsion bar (16) is provided on the seat frame bracket (2), and the torsion bar One end of (16) is arranged at the third linkage point (13), and the other end is arranged at a position near the front side of the seat frame bracket (2) at the third linkage point (13); the connecting line between the second linkage point (12) and the third linkage point (13) is set as L1, and when the force-applying member drives the seat frame bracket (2) to be lifted through the first linkage point (11), the second linkage point (12) is subsequently formed to make an arc displacement around the third linkage point (13) as the center of the circle, and the lifting angle of L1 relative to the initial position is 8°-20°.

2. The low-sitting zero-gravity car seat according to claim 1, characterized in that: The driving device comprises a central driving motor (5) and a steering transmission mechanism, wherein two ends of the central driving motor (5) are respectively connected to transmission shafts (6), the two transmission shafts (6) are respectively connected to the power input ends of the corresponding steering transmission mechanisms, and the power output end of the rotation transmission mechanism is connected to a screw rod (7) arranged on the short slide rail (3); the force applying member is driven to slide along the short slide rail (3) by the rotation of the screw rod (7).

3. The low-sitting zero-gravity car seat according to claim 2, characterized in that: The rotation transmission mechanism comprises a gear box (8), a turbine, and a worm. The turbine and the worm are meshed with each other and installed in the gear box (8). The turbine corresponds to a power input end, and the worm corresponds to a power output end.

4. The low-sitting zero-gravity car seat according to claim 2, characterized in that: The force applying member comprises a sliding seat (14) driven by a screw rod (7) and a mounting bracket (15) fixedly mounted on the sliding seat (14); the front linkage bracket (9) and the mounting bracket (15) are hingedly connected, and a first linkage point (11) is formed at the hinged position between the front linkage bracket (9) and the mounting bracket (15).

5. A low-sitting zero-gravity car seat according to any one of claims 1 to 4, characterized in that: The front linkage bracket (9) is hinged to the front side of the seat frame bracket (2), and the hinged position between the front linkage bracket (9) and the front side of the seat frame bracket (2) forms a second linkage point (12).

6. The low-sitting zero-gravity car seat according to claim 1, characterized in that: The lifting angle of L1 relative to the initial position is 15°-20°.

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