A low-position seat adjustment mechanism and seat frame

Abstract

The application discloses a low-sitting-position seat adjusting mechanism and a seat framework, which comprises a high-adjusting component, the high-adjusting component comprising a U-shaped guide support, a driving motor, a lead screw and a boss; and a seat pan assembly, the outer surface of the seat pan assembly being fixedly connected with a rear pipe, the inner surface of one side of the seat pan assembly being axially connected with a first connecting plate, one end of the first connecting plate being axially connected with a connecting seat two, the lower surface of the connecting seat two being slidably connected with a lower left slide rail, the inner surface of the other side of the seat pan assembly being axially connected with a second connecting plate, and one end of the second connecting plate being axially connected with a connecting seat one; by optimizing the driving system, especially by replacing the traditional combination of a gear and a toothed plate with the combination of a motor and a lead screw nut mechanism, the rear end space can be released, and the height of the seat in the vertical direction can be further compressed. Meanwhile, the backrest rotating shaft can be lowered, the problem of the top waist of the large-angle turning framework is solved, and the comfort of the vehicle seat is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and in particular to a low-sitting-position seat adjustment mechanism and a seat frame. Background Technology

[0002] Currently, new energy vehicles are a significant trend in the industry. Since their power comes from battery packs, which are typically located under the vehicle chassis, this inevitably raises the floor and reduces the space available for seating. Customers currently have a strong demand for low-profile (industry term: Low Block) frame platforms. When positioning the seats, OEMs specify the frame block value, which is the vertical distance from point H to the bottom of the slide rail. Point H (hip point) represents the connection point between the torso and thighs of the human model, i.e., the hip point. A smaller block value means less space the vehicle seat can occupy in the height direction; typically, the block value is required to be controlled at 180mm or even lower.

[0003] It is no exaggeration to say that optimizing the structural height of a seat can potentially increase a vehicle's driving range, thereby enhancing the core competitiveness of the seat frame platform. A Chinese patent discloses a "car seat height adjustment device" (application number CN201910657455.3). This device adjusts height by placing one or two drive motors on the inner and outer front ends of the seat frame, and using a lead screw or long rack to directly drive two rear links in a four-bar linkage to rotate—the so-called spindle or long rack solution in the industry. While this patent optimizes the overall height of the seat cushion structure, the two high-adjustment links have a long span and are symmetrically arranged under the seat cushion frame. This not only results in a complex structure and heavy weight, but also occupies a significant amount of space under the seat cushion, making it difficult to install ventilation and heating devices, control modules, etc., thus greatly limiting its practical application. Summary of the Invention

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a low-position seat adjustment mechanism and seat frame. By installing the height adjustment component between the rear tube of the seat assembly and connecting seats three and four, a simple and compact structure is achieved without affecting the slide rail adjustment, maximizing the release of space under the seat. By optimizing the drive system, especially by replacing the traditional gear and toothed plate combination with a combination of motor and lead screw and nut mechanism, rear space can be released, and the vertical height of the seat can be further reduced. At the same time, the backrest pivot can be lowered, solving the problem of the frame pressing against the waist at large angles, and simultaneously improving the comfort of the vehicle seat. The direct application of thrust to the rear linkage by the lead screw results in high transmission efficiency, fewer parts, simple structure, low cost, and convenient production and assembly. Under the same arrangement conditions, the structure with direct force application by the lead screw and nut provides higher locking strength and is suitable for situations where all seat belt fixing points are located on the seat.

[0005] The present invention also provides a low-posture seat adjustment mechanism and a seat frame as described above, comprising: a height adjustment component, the height adjustment component including a U-shaped guide bracket, a drive motor, a lead screw, and a boss; a seat assembly, the outer surface of which is fixedly connected to a rear tube, one inner surface of which is axially connected to a first connecting plate, one end of which is axially connected to a connecting seat two, the lower surface of which is slidably connected to a lower left slide rail, the other inner surface of which is axially connected to a second connecting plate, one end of which is axially connected to a connecting seat one, the lower surface of which is slidably connected to a lower right slide rail; a paddle fixedly connected to the outer surface of the rear tube, the paddle being movably connected to the U-shaped guide bracket by a bolt one, a rear connecting rod fixedly connected to the outer surface of the rear tube, the outer surface of which is movably connected to a connecting seat four by a bolt two, the connecting seat four being slidably connected to the lower left slide rail. The aforementioned structure, by installing the high-adjustment component between the rear tube of the seat assembly and connecting seats three and four, achieves a simple and compact structure without affecting the slide rail adjustment, maximizing the release of space under the seat. Optimizing the drive system, especially by replacing the traditional gear and toothed plate combination with a combination of a motor and a lead screw and nut mechanism, frees up rear space, further reducing the seat's vertical height. Simultaneously, the backrest pivot can be lowered, solving the problem of lumbar support during large-angle flattening of the frame and improving vehicle seat comfort. Applying thrust directly to the rear linkage via the lead screw results in high transmission efficiency, fewer parts, a simple structure, low cost, and convenient production and assembly. Under the same layout conditions, the structure with direct force application via the lead screw and nut provides higher locking strength and is suitable for situations where all seat belt anchor points are located on the seat.

[0006] According to the present invention, a low-posture seat adjustment mechanism and seat frame are provided, wherein the output end of the drive motor is connected to a lead screw via a lead screw nut, and one end of the lead screw is fixedly connected to a U-shaped guide bracket. This enables the adjustment of the seat's vertical height.

[0007] According to the present invention, a low-position seat adjustment mechanism and seat frame are provided, wherein one end of the lead screw is a flange face, the flange face is connected to the connecting seat four by a bolt three, and a bushing is provided on the outer surface of the bolt three and the inside of the flange face. This allows for smooth movement between the moving parts when the seat is raised or lowered.

[0008] According to the present invention, a low-position seat adjustment mechanism and seat frame are provided, wherein a boss is fixedly connected to the surface of the rear linkage, and the boss is movably connected to a U-shaped guide bracket. This movable connection allows the seat to be adjusted for both rising and falling.

[0009] According to the present invention, a low-position seat adjustment mechanism and seat frame are provided, wherein the drive motor is fixedly connected to the outer surface of the rear tube via a bracket, thereby securing the drive motor.

[0010] According to the present invention, a low-sitting-position seat adjustment mechanism and seat frame are provided, wherein a base plate is fixedly connected between the lower left slide rail and the lower right slide rail, and a connecting bracket is fixedly connected to the outer surface of the seat assembly, which facilitates the connection of the seat assembly and the installation of the front and rear moving parts.

[0011] According to the present invention, a low-posture seat adjustment mechanism and seat frame are provided, wherein a connecting seat three is slidably connected to the upper surface of the lower right slide rail, and the connecting seat three is movably connected to the seat assembly via a movable bracket. This facilitates the adjustment of the seat's vertical height.

[0012] Beneficial effects

[0013] 1. Compared with the prior art, this invention achieves a simple and compact structure by installing the high-adjustment component between the rear tube of the seat assembly and connecting seat three and connecting seat four, without affecting the slide rail adjustment, thus maximizing the release of space under the seat.

[0014] 2. Compared with existing technologies, this invention optimizes the drive system, especially by replacing the traditional gear and toothed plate combination with a combination of motor and lead screw and nut mechanism. This can free up rear space, further compress the height of the seat in the vertical direction, and allow the backrest pivot to move downwards, solving the problem of the frame pressing against the waist at large angles and improving the comfort of the vehicle seat.

[0015] 3. Compared with the prior art, this invention directly applies thrust to the rear connecting rod through the lead screw, resulting in high transmission efficiency, fewer parts, simple structure, low cost, and very convenient production and assembly. Under the same arrangement conditions, the structure of the lead screw and nut directly bearing the force of this invention has higher locking strength and can be applied to situations where all fixing points of the seat belt are arranged on the seat. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is an overall structural diagram of a low-sitting-position seat adjustment mechanism and a seat frame according to the present invention;

[0018] Figure 2 This is a schematic diagram of a low-sitting-position seat adjustment mechanism and a high-profile component of the seat frame according to the present invention;

[0019] Figure 3 This is a schematic diagram of the lowest position of the seat basin assembly of the seat frame and the low-position adjustment mechanism of the low-position seat of the present invention.

[0020] Figure 4 This is a schematic diagram of the highest position of the seat basin assembly of the seat frame, which is a low-position seat adjustment mechanism of the present invention.

[0021] Legend:

[0022] 1. High-adjustment component; 101. U-shaped guide bracket; 102. Bolt 1; 103. Lead screw; 104. Drive motor; 105. Paddle; 106. Boss; 107. Bolt 2; 108. Bolt 3; 2. Rear tube; 3. Connecting bracket; 4. Rear connecting rod; 5. Seat assembly; 6. First connecting plate; 7. Lower left slide rail; 8. Base plate; 9. Lower right slide rail; 10. Second connecting plate; 11. Connecting seat 3; 12. Connecting seat 4; 13. Connecting seat 1; 14. Connecting seat 2. Detailed Implementation

[0023] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0024] Reference Figure 1-4This invention discloses a low-position seat adjustment mechanism and seat frame, comprising: a height adjustment component 1 for adjusting the height of the seat; the height adjustment component 1 includes a U-shaped guide bracket 101, a drive motor 104, a lead screw 103, and a boss 106 for connecting the height adjustment component 1 to facilitate installation. The drive motor 104 is fixedly connected to the outer surface of the rear tube 2 via the bracket, and the output end of the drive motor 104 is connected to the lead screw 103 via a lead screw nut. One end of the lead screw 103 is fixedly connected to the U-shaped guide bracket 101. One end of the lead screw 103 is a flange face, which is connected to the connecting seat 12 via bolts 108. Bushings are provided on the outer surface of the bolts 108 and inside the flange face.

[0025] The seat assembly 5 is the internal structure of the car seat. A rear tube 2 is fixedly connected to the outer surface of the seat assembly 5 for securing it. A first connecting plate 6 is axially connected to the inner surface of one side of the seat assembly 5, connecting the connecting seat 14 and the seat assembly 5. One end of the first connecting plate 6 is axially connected to the connecting seat 14, connecting to the lower left slide rail 7. The lower surface of the connecting seat 14 is slidably connected to the lower left slide rail 7, providing support and sliding conditions. A second connecting plate 10 is axially connected to the inner surface of the other side of the seat assembly 5, connecting the connecting seat 13 and the seat assembly 5. One end of the second connecting plate 10 is axially connected to the connecting seat 13, connecting to the lower right slide rail 9. The lower surface of the connecting seat 13 is slidably connected to the lower right slide rail 9, providing sliding conditions. A lever 105 is fixedly connected to the outer surface of the rear tube 2 for fixing. The lever 105 is movably connected to the U-shaped guide bracket 101 via bolt 102.

[0026] A rear connecting rod 4 is fixedly connected to the outer surface of the rear tube 2. A connecting seat 12 is movably connected to the outer surface of the rear connecting rod 4 via bolt 2 107 for connecting with the lower left slide rail 7. The connecting seat 12 is slidably connected to the lower left slide rail 7. A boss 106 is fixedly connected to the surface of the rear connecting rod 4 for connecting the rear connecting rod 4 and the U-shaped guide bracket 101. The boss 106 is movably connected to the U-shaped guide bracket 101. A base plate 8 is fixedly connected between the lower left slide rail 7 and the lower right slide rail 9 for fixing the lower left slide rail 7 and the lower right slide rail 9. A connecting bracket 3 is fixedly connected to the outer surface of the seat assembly 5 for connecting the seat back. A connecting seat 11 is slidably connected to the upper surface of the lower right slide rail 9 for connecting the lower right slide rail 9. The connecting seat 11 is movably connected to the seat assembly 5 via a movable bracket.

[0027] Working principle: The drive motor 104 of the high-adjustment component 1 is located at the lowest end of the lead screw 103. The end of the lead screw 103 is flattened to form a flange surface with mounting holes and a bushing. It is fixed to the connecting seat 12 by bolts 3 and 108. The upper end of the lead screw 103 is welded to the U-shaped guide bracket 101 and connected to the paddle 105 welded to the rear tube 2 of the seat assembly 5 by bolts 1 and 102. The U-shaped guide bracket 101 is coupled to the boss 106 on the rear connecting rod 4. The rear connecting rod 4 is fixed to the rear tube 2 by welding, and its lower part is hinged to the connecting seat 12 by bolts 2 and 107 and a bushing.

[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A low sitting position chair adjustment mechanism and a chair frame, characterized by, The utility model relates to a high -tune component (1) and a seat basin assembly (5), and the high -tune component (1) includes U type guide bracket (101), drive motor (104), screw rod (103), boss (106), and the seat basin assembly (5) includes the rear pipe (2) of fixed connection of the outer surface of the seat basin assembly (5), the first connecting plate (6) of the inner surface axle connection of one side of the seat basin assembly (5), the lower left slide rail (7) of the lower surface sliding connection of the one end of the first connecting plate (6) through the axle connection of connecting seat no. The utility model relates to a high -tune component (1) and a seat basin assembly (5), and the high -tune component (1) includes U type guide bracket (101), drive motor (104), screw rod (103), boss (106), and the seat basin assembly (5) includes the rear pipe (2) of fixed connection of the outer surface of the seat basin assembly (5), the first connecting plate (6) of the inner surface axle connection of one side of the seat basin assembly (5), the lower left slide rail (7) of the lower surface sliding connection of the one end of the first connecting plate (6) through the axle connection of connecting seat no. The utility model relates to a high -tune component (1) and a seat basin assembly (5), and the high -tune component (1) includes U type guide bracket (101), drive motor (104), screw rod (103), boss (106), and the seat basin assembly (5) includes the rear pipe (2) of fixed connection of the outer surface of the seat basin assembly (5), the first connecting plate (6) of the inner surface axle connection of one side of the seat basin assembly (5), the lower left slide rail (7) of the lower surface sliding connection of the one end of the first connecting plate (6) through the axle connection of connecting seat no. The utility model relates to a high -tune component (1) and a seat basin assembly (5), and the high -tune component (1) includes U type guide bracket (101), drive motor (104), screw rod (103), boss (106), and the seat basin assembly (5) includes the rear pipe (2) of fixed connection of the outer surface of the seat basin assembly (5), the first connecting plate (6) of the inner surface axle connection of one side of the seat basin assembly (5), the lower left slide rail (7) of the lower surface sliding connection of the one end of the first connecting plate (6) through the axle connection of connecting seat no.

2. A low sitting position seat adjustment mechanism and seat frame according to claim 1, characterized in that, The utility model relates to a high -tune component (1) and a seat basin assembly (5), and the high -tune component (1) includes U type guide bracket (101), drive motor (104), screw rod (103), boss (106), and the seat basin assembly (5) includes the rear pipe (2) of fixed connection of the outer surface of the seat basin assembly (5), the first connecting plate (6) of the inner surface axle connection of one side of the seat basin assembly (5), the lower left slide rail (7) of the lower surface sliding connection of the one end of the first connecting plate (6) through the axle connection of connecting seat no.

3. The low sitting position seat adjustment mechanism and seat frame according to claim 1, characterized by, The utility model relates to a high -tune component (1) and a seat basin assembly (5), and the high -tune component (1) includes U type guide bracket (101), drive motor (104), screw rod (103), boss (106), and the seat basin assembly (5) includes the rear pipe (2) of fixed connection of the outer surface of the seat basin assembly (5), the first connecting plate (6) of the inner surface axle connection of one side of the seat basin assembly (5), the lower left slide rail (7) of the lower surface sliding connection of the one end of the first connecting plate (6) through the axle connection of connecting seat no.

4. The low sitting position seat adjustment mechanism and seat frame according to claim 1, wherein The utility model relates to a high -tune component (1) and a seat basin assembly (5), and the high -tune component (1) includes U type guide bracket (101), drive motor (104), screw rod (103), boss (106), and the seat basin assembly (5) includes the rear pipe (2) of fixed connection of the outer surface of the seat basin assembly (5), the first connecting plate (6) of the inner surface axle connection of one side of the seat basin assembly (5), the lower left slide rail (7) of the lower surface sliding connection of the one end of the first connecting plate (6) through the axle connection of connecting seat no.

5. The low sitting position seat adjustment mechanism and seat frame according to claim 1, wherein ​ 6. The low sitting position seat adjustment mechanism and seat frame according to claim 1, wherein ​ 7. The low sitting position seat adjustment mechanism and seat frame according to claim 1, wherein ​

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