An automobile seat

Abstract

The application relates to the technical field of automobile seats, and discloses an automobile seat which comprises a seat body and a footrest movably arranged on the back side of the seat body, wherein the footrest has a folding position and an unfolding position on the back side of the seat body; a driving mechanism which comprises a driving motor and a rack, the driving motor is arranged on the seat body, a gear is arranged on the rotating shaft of the driving motor, the rack is in meshing transmission with the gear, the footrest is connected with the rack, and the rack can drive the footrest to switch between the folding position and the unfolding position. The automobile seat has the advantages that the driving mechanism for driving the footrest occupies a small space, the automobile seat can be adapted to various vehicle models, the unfolding and folding movement of the footrest is stable, and the load that can be borne by the footrest is high.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and more particularly to an automotive seat with a foldable footrest. Background Technology

[0002] Car seats typically have footrests on the back for rear passengers to place their feet, improving their comfort. For ease of use, the footrests are foldable; they can be unfolded when needed and folded back when not in use.

[0003] Among existing car seats with foldable footrests, gooseneck linkage and crank linkage types are the most common. These types of footrests are prone to wobbling and have poor load-bearing capacity. The drive mechanism of the footrest occupies a large space, which limits the space for the arrangement of other surrounding parts, thus restricting its application. 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 provide a car seat with a wide range of applications and good stability when the foot pedal is unfolded and folded.

[0005] The technical solution adopted by this invention to solve its technical problem is to propose a car seat, comprising:

[0006] The seat body and a footrest movably disposed on the back side of the seat body, the footrest having a folded position and an unfolded position on the back side of the seat body;

[0007] The drive mechanism includes a drive motor and a rack. The drive motor is mounted on the seat body, and a gear is provided on the shaft of the drive motor. The rack meshes with the gear for transmission. The foot pedal is connected to the rack, and the rack can drive the foot pedal to switch between the folded position and the unfolded position.

[0008] Furthermore, a limiting structure is provided on the back side of the rack on the seat body, and the rack moves against the limiting structure.

[0009] Furthermore, the limiting structure has a cylindrical surface, and the rack moves against the cylindrical surface.

[0010] Furthermore, the limiting structure has two limiting flanges, and the rack is located between the two limiting flanges.

[0011] Furthermore, the back side of the rack is provided with at least one curved surface, and when the rack drives the foot pedal to switch between the folded position and the unfolded position, the curved surface moves against the limiting structure.

[0012] Furthermore, a limiting shaft is provided on the upper edge of the seat body near the tooth side of the rack, and a guide surface is provided on the side of the rack near the limiting shaft. When the rack drives the foot pedal to switch between the folded position and the unfolded position, the guide surface moves against the limiting shaft.

[0013] Furthermore, both the drive motor and the rack are arranged along the height direction of the seat body.

[0014] Furthermore, when the footrest is in the folded position on the seat body, the footrest is against the back of the seat body; when the footrest switches from the folded position to the unfolded position, the footrest rotates downward by a preset angle, and the preset angle is greater than or equal to ninety degrees.

[0015] Furthermore, the rack is provided with a limiting groove along its length, and the seat body is provided with a limiting pin, which passes through the limiting groove.

[0016] Furthermore, the foot pedal includes a rotating shaft, a first bracket, a second bracket, and a foot pedal. The rotating shaft is rotatably mounted on the seat body. The first bracket and the second bracket are both fixedly connected to the rotating shaft, and the first bracket is hinged to the rack. The foot pedal is connected to the second bracket.

[0017] A torsion spring is sleeved on the rotating shaft. One torsion arm of the torsion spring abuts against the seat body, and the other torsion arm of the torsion spring abuts against the foot pedal. When the foot pedal is in the unfolded position, the torsion spring is in a deformed state.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] In this invention, the drive mechanism for the foot pedal consists of a drive motor, gears, and a rack. It occupies a small overall space, making the structure more compact and leaving more room for the installation of surrounding components within the seat body. Compared to methods using gooseneck linkages, crank-connecting rods, or gear sets, this drive structure occupies less space, making it applicable to a wider range of vehicle models. Both the rack and drive motor can be arranged along the height of the seat body, fully utilizing the space in that direction. During the rotation of the foot pedal, the rack is limited on both the front and rear sides by limiting shafts and limiting structures. The curved surface on the back of the rack slides against the cylindrical surface of the limiting structure, and the guide surface near the convex teeth of the rack slides against the limiting shaft. Alternatively, limiting grooves can be formed on the rack to engage with limiting pins on the seat body, ensuring reliable rack movement and preventing jamming. This, in turn, ensures reliable foot pedal movement and high structural stability during unfolding and folding movements. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the car seat of the present invention (with the footrest in the folded position);

[0021] Figure 2 for Figure 1 A schematic diagram of the structure when the middle pedal is in the extended position;

[0022] Figure 3 A structural diagram of a car seat after the seat body has been removed;

[0023] Figure 4 A structural diagram of the drive mechanism, rotating shaft, limiting structure, and limiting shaft;

[0024] Figure 5 This is a structural diagram of the rack, the limiting structure, and the limiting shaft.

[0025] Figure 6 This is a planar schematic diagram of a rack;

[0026] Figure 7 This is an assembly drawing of the rack and pinion.

[0027] In the picture:

[0028] 1. Seat body; 10. Limiting structure; 11. Limiting shaft; 101. Column surface; 102. Limiting flange; 12. Limiting pin;

[0029] 2. Foot pedal; 20. Rotating shaft; 21. First support; 22. Second support; 23. Foot pedal;

[0030] 3. Drive mechanism; 30. Drive motor; 301. Gear; 31. Rack; 311. Curved surface; 312. Guide surface; 313. Limiting groove;

[0031] 4. Torsion spring. Implementation

[0032] 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.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0034] 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.

[0035] 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.

[0036] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If 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.

[0037] like Figures 1-3 As shown, a car seat mainly includes: a seat body 1, a foldable and unfoldable footrest 2, a drive mechanism 3 for driving the footrest 2, and a torsion spring 4 disposed between the footrest 2 and the seat body 1.

[0038] The footrest 2 is movably disposed on the back side of the seat body 1, and the footrest 2 has a folded position on the back side of the seat body 1 (e.g., Figure 1 (as shown) and an unfolded position (as shown) Figure 2 As shown, the footrest 2 can be suspended at any position between the unfolded and folded positions. These unfolded and folded positions represent the two extreme positions of the footrest 2's movement. By controlling the number of rotations of the drive motor 30, the footrest 2 can be suspended at the corresponding position. When the footrest 2 is in the folded position on the seat body 1, it rests against the back of the seat body 1. When not in use, the footrest 2 is folded to the back of the seat body 1, ensuring that it does not occupy additional space in the cab and maintains a high aesthetic appeal. When the footrest 2 switches from the folded position to the unfolded position, it rotates downwards by a preset angle, which is greater than or equal to 90 degrees. At this time, the footrest 2 is tilted relative to the seat body 1. This rotation angle can be adjusted according to the comfortable height for the passenger to place their feet.

[0039] The drive mechanism 3 includes a drive motor 30 and a rack 31. The drive motor 30 is mounted on the seat body 1, and a gear 301 is mounted on the shaft of the drive motor 30. The rack 31 meshes with the gear 301 for transmission. The foot pedal 2 is connected to the rack 31, and the rack 31 can drive the foot pedal 2 to switch between the folded position and the unfolded position. During use, the drive motor 30 rotates, driving the gear 301 to rotate via its shaft. The gear 301 meshes with the rack 31, which in turn drives the foot pedal 2 to rotate, allowing the foot pedal 2 to hover at any position between the unfolded and folded positions.

[0040] Specifically, the foot pedal 2 includes a rotating shaft 20, a first bracket 21, a second bracket 22, and a foot pedal 23. The rotating shaft 20 is rotatably mounted on the seat body 1. The first bracket 21 and the second bracket 22 are both fixedly connected to the rotating shaft 20, and the first bracket 21 is hinged to the rack 31. The foot pedal 23 is connected to the second bracket 22. Two second brackets 22 are provided along the width direction of the foot pedal 23. The two second brackets 22 and the first bracket 21 are all welded to the rotating shaft 20. Therefore, when the rotating shaft 20 rotates, it will drive the foot pedal 2 to rotate. In actual use, the drive motor 30 drives the gear 301 to rotate. The gear 301 meshes with the rack 31 to rotate. Since the rack 31 is hinged to the first bracket 21, the first bracket 21 will rotate along the center of the rotating shaft 20, driving the rotating shaft 20 to rotate, thereby driving the foot pedal 23 to rotate through the second bracket 22. The rotating shaft 20 is fitted with a torsion spring 4. One torsion arm of the torsion spring 4 abuts against the seat body 1, and the other torsion arm of the torsion spring 4 abuts against the foot pedal 2. When the foot pedal 2 is in the unfolded position, the torsion spring 4 is in a deformed state. The torsion spring 4 makes the passenger feel comfortable when stepping on the foot pedal 2.

[0041] In practical use, the drive mechanism 3 of the foot pedal 2 in this embodiment consists of a drive motor 30, a gear 301, and a rack 31. It occupies little space, making the structure more compact and leaving more space for the installation of surrounding parts within the seat body. Compared to methods using gooseneck linkages, crank linkages, or gear 301 drives, this drive structure occupies less space, making it applicable to a wider range of vehicle models. Both the rack 31 and the drive motor 30 can be arranged along the height direction of the seat body 1, making full use of the space in that direction. The gear 301 and rack 31 provide smooth transmission and high transmission accuracy, preventing the foot pedal 2 from wobbling and ensuring good stability during folding and unfolding.

[0042] like Figures 3-6As shown, a limiting structure 10 is provided on the back side of the rack 31 on the seat body 1, and the rack 31 moves against the limiting structure 10. The limiting structure 10 is composed of two mutually rotatable rollers, and can rotate. The limiting structure 10 can limit the rack 31 while allowing it to move smoothly. The limiting structure 10 has a cylindrical surface 101, and the rack 31 moves against the cylindrical surface 101. The rack 31 and the cylindrical surface 101 are in line contact, avoiding interference with the movement of the rack 31. Furthermore, the limiting structure 10 has two limiting flanges 102, and the rack 31 is positioned between the two limiting flanges 102. The two flanges ensure that the rack 31 does not shift to either side. Furthermore, the back side of the rack 31 is provided with at least one curved surface 311. When the rack 31 drives the foot pedal 2 to switch between the folded position and the unfolded position, the curved surface 311 moves against the limiting structure 10. The curved surface 311 on the back side of the rack 31, rather than a plane, can ensure the smooth movement of the rack 31 and ensure that the rack 31 will not interfere with the movement.

[0043] Preferably, a limiting shaft 11 is provided on the seat body 1 along the tooth side near the rack 31, and a guide surface 312 is provided on the rack 31 near the limiting shaft 11. When the rack 31 drives the foot pedal 2 to switch between the folded position and the unfolded position, the guide surface 312 moves against the limiting shaft 11. In actual use, in this embodiment, when the rack 31 drives the foot pedal 2 to rotate, the front and rear sides are limited by the limiting shaft 11 and the limiting structure 10, respectively. The curved surface 311 on the back side of the rack 31 slides with the cylindrical surface 101 of the limiting structure 10, and the guide surface 312 on the side of the rack 31 near the convex tooth slides with the limiting shaft 11, ensuring that the movement of the rack 31 is reliable and that there is no jamming. This ensures that the foot pedal 2 moves reliably and has high structural stability during unfolding and folding movements.

[0044] It needs to be explained that, in addition to using a limiting structure 10 on the back side of the rack 31 and a limiting shaft 11 near the tooth side for limiting, the limiting structure 10 and the limiting shaft 11 can also be omitted, and a limiting groove 313 can be opened on the rack 31, and a limiting pin 12 can be provided on the seat body 1. Specifically, as... Figure 7 As shown, the rack 31 is provided with a limiting groove 313 along its length direction, and the seat body 1 is provided with a limiting pin 12. The limiting pin 12 passes through the limiting groove 131 to limit the movement of the rack 31 and ensure its reliable movement.

[0045] In this design, the drive mechanism 3 used to drive the foot pedal 2 in the car seat occupies little space, making it compatible with a wide range of car models. Furthermore, the foot pedal 2 exhibits good stability during its unfolding and folding movements, and can withstand high loads.

Claims

1. A car seat, characterized in that, include: The seat body and a footrest movably disposed on the back side of the seat body, the footrest having a folded position and an unfolded position on the back side of the seat body; The drive mechanism includes a drive motor and a rack, both of which are arranged along the height direction of the seat body. The drive motor is mounted on the seat body, and a gear is provided on the shaft of the drive motor. The rack meshes with the gear for transmission. The foot pedal is connected to the rack, and the rack can drive the foot pedal to switch between the folded position and the unfolded position. The seat body has a limiting structure along the back side of the rack, and the rack moves against the limiting structure; the limiting structure has a cylindrical surface, and the rack moves against the cylindrical surface; and the limiting structure has two limiting flanges, and the rack is located between the two limiting flanges. The back side of the rack is provided with at least one curved surface. When the rack drives the foot pedal to switch between the folded position and the unfolded position, the curved surface moves against the limiting structure. The seat body has a limiting shaft on the side of the rack near the toothed side, and the rack has a guide surface on the side near the limiting shaft. When the rack drives the foot pedal to switch between the folded position and the unfolded position, the guide surface moves against the limiting shaft.

2. The car seat according to claim 1, characterized in that, When the footrest is in the folded position on the seat body, the footrest is against the back of the seat body; when the footrest is switched from the folded position to the unfolded position, the footrest rotates downward by a preset angle, and the preset angle is greater than or equal to ninety degrees.

3. The car seat according to claim 1, characterized in that, The rack has a limiting groove along its length, and the seat body has a limiting pin, which passes through the limiting groove.

4. The car seat according to claim 1, characterized in that, The foot pedal includes a rotating shaft, a first bracket, a second bracket, and a foot pedal. The rotating shaft is rotatably mounted on the seat body. The first bracket and the second bracket are both fixedly connected to the rotating shaft, and the first bracket is hinged to the rack. The foot pedal is connected to the second bracket. A torsion spring is sleeved on the rotating shaft. One torsion arm of the torsion spring abuts against the seat body, and the other torsion arm of the torsion spring abuts against the foot pedal. When the foot pedal is in the unfolded position, the torsion spring is in a deformed state.

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