An automotive seat drive mechanism and an automobile

Abstract

The present invention discloses an automotive seat drive mechanism and an automobile. The drive mechanism includes a seat frame assembly and a rigid base. The seat frame assembly is connected to the rigid base through a linkage mechanism. Each linkage mechanism includes a front connection bracket, a rear connection bracket, a drive bracket, a recliner core component, and a core component fixing bracket. The lower end of the front connection bracket is hinged to the rigid base, and the upper end of the front connection bracket is hinged to one end of the drive bracket. The other end of the drive bracket is fixedly connected to one side of the recliner core component, and the other side of the recliner core component is fixed on the core component fixing bracket. The recliner core components on the left and right sides are connected through a synchronizing rod. The seat frame assembly is provided with a recliner motor for driving the synchronizing rod to rotate. This drive mechanism can well solve the synchronization problem, has characteristics such as high strength and good self-locking property, and can avoid various quality problems caused by screw drive.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle seats, and in particular to a driving mechanism for vehicle seats. The present invention also relates to a vehicle provided with the driving mechanism for vehicle seats. Background Art

[0002] At present, when most vehicle seats are in use, the pressure is often concentrated only on the buttocks and the root of the thighs. Prolonged sitting will prevent blood circulation due to the long-term contact between muscles and blood vessels and the seat, and it is easy to cause a sense of fatigue. At the same time, the curvature of the soft tissues of the human body increases, and more of a person's weight is concentrated on the coccyx, which is harmful to spinal health.

[0003] Zero-gravity seats allow the occupant to assume a nearly lying sitting posture through a large-angle seat adjustment (the backrest reclines backward) and a retractable leg rest, and also provide good support for the body, allowing the spine to be in a natural and relaxed state; as much as possible, the pressure on the body is dispersed and balanced, muscle wear is reduced, and a constant blood flow is ensured at all times, creating a weightless and relaxed feeling.

[0004] For existing zero-gravity seats, their skeletons basically use a screw motor drive. Through the movement of the nut on the screw, the overall seat frame is pushed upward. Although this driving mechanism can achieve the function of lifting the seat, the synchronism of the movement on both sides and the rigidity of the seat in the zero-gravity state still need to be improved.

[0005] Moreover, since the gravity of the passenger needs to be overcome during the lifting process, there are very strict requirements for the screw and the nut that cooperate with it. The durability in both the bumpy creep state and normal operation is a relatively serious challenge. Summary of the Invention

[0006] The purpose of the present invention is to provide a driving mechanism for vehicle seats to solve the technical problems existing in the screw motor driving mechanism.

[0007] Another purpose of the present invention is to provide a vehicle provided with the driving mechanism for vehicle seats.

[0008] To achieve the above object, the present invention provides an automotive seat drive mechanism, which includes a seat frame assembly and a rigid base located below the seat frame assembly. The seat frame assembly and the rigid base are connected by a symmetrically arranged link mechanism on the left and right. Each link mechanism includes a front connection bracket, a rear connection bracket, a drive bracket, a core member of an angle adjuster, and a core member fixing bracket. The lower end of the front connection bracket is hinged to the front mounting point of the rigid base, and the upper end of the front connection bracket extending backward and upward is hinged to one end of the drive bracket extending backward. The other end of the drive bracket is fixedly connected to one side of the core member of the angle adjuster, and the other side of the core member of the angle adjuster is fixed on the core member fixing bracket. The core member fixing bracket is fixedly connected to the seat frame assembly. The upper end of the rear connection bracket is connected to the seat frame assembly, and the lower end of the rear connection bracket is hinged to the rear mounting point of the rigid base. The core members of the angle adjusters of the link mechanisms on the left and right sides are connected by a synchronizing rod, and the seat frame assembly is provided with an angle adjuster motor for driving the synchronizing rod to rotate.

[0009] Optionally, in the axial direction of the synchronizing rod, the drive brackets of the link mechanisms are located inside the front connection brackets, the core members of the angle adjusters are located inside the drive brackets, and the core member fixing brackets are located inside the core members of the angle adjusters.

[0010] Optionally, the end of the drive bracket connected to the core member of the angle adjuster is in a circular ring shape corresponding to the core member of the angle adjuster, and a notch groove for cooperating with one side of the core member of the angle adjuster is provided on its inner ring wall.

[0011] Optionally, the core member fixing bracket is fixedly connected to the front cross plate of the seat frame of the seat frame assembly.

[0012] Optionally, the lateral projection of the front connection bracket is in an upward-arching arc shape, and / or the vertical projection of the front connection bracket is in a "Z" shape with two reverse bending angles being obtuse angles.

[0013] Optionally, the angle adjuster motor is fixed on the outer side of the seat frame side plate of the seat frame assembly, and the synchronizing rod driven by it passes through the seat frame side plate of the seat frame assembly, the end of the drive bracket connected to the core member of the angle adjuster, and the core members of the angle adjusters on both sides.

[0014] Optionally, a motor fixing bracket is provided on the outer side of the seat frame side plate. The angle adjuster motor is installed on the motor fixing bracket through motor fixing bolts and gaskets, and a limit spring clip is provided at one end of the synchronizing rod passing through the angle adjuster motor.

[0015] Optionally, an upper mounting hole is provided at the upper end of the rear connecting bracket. The rear cross tube of the seat frame assembly passes through the upper mounting hole and is fixedly connected to the rear connecting bracket. The end of the rear cross tube is fixedly connected to the seat frame side plate of the seat frame assembly.

[0016] Optionally, the rigid base is a slide rail or a fixed base, and / or the synchronizing rod is a spline rod.

[0017] To achieve the above object, the present invention provides an automobile, including a vehicle body and a seat disposed inside the vehicle body. The seat is provided with the automobile seat drive mechanism according to any one of the above.

[0018] The automobile seat drive mechanism provided by the present invention has been specifically improved relative to the screw motor drive mechanism. Instead of using the screw and nut method to lift the front end of the seat, an angle adjuster and a unique link mechanism are used to lift the front end of the seat, so that the human gravity of the passenger is evenly released on the entire seat, avoiding the generation of heavy pressure areas due to the concentration of force and being in a zero-gravity state. Since the core components of the angle adjuster are connected by a synchronizing rod, the synchronization problem can be well solved. Moreover, the core components of the angle adjuster have characteristics such as high strength and good self-locking property, which can avoid various quality problems brought by screw transmission, thereby giving consumers a more comfortable use experience.

[0019] The automobile provided by the present invention is provided with the automobile seat drive mechanism. Since the automobile seat drive mechanism has the above technical effects, the automobile provided with this automobile seat drive mechanism should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of an automobile seat drive mechanism provided by an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of a unilateral structure in which the angle adjuster motor and the front cross plate of the seat frame are separated from the seat frame side plate;

[0022] Figure 3 is at Figure 2 On the basis of, a schematic diagram of the further decomposed structure of the installation structure of the regulator motor, the front connecting bracket, the drive bracket, the core component of the angle adjuster, and the core component fixing bracket;

[0023] Figure 4 is a decomposed schematic diagram of the hinge structure of the front connecting bracket, the drive bracket, and the rear connecting bracket;

[0024] Figure 5 is a side view of the automobile seat in the initial state;

[0025] Figure 6 is a side view of the automobile seat in the zero-gravity state.

[0026] In the figure:

[0027] 101. Motor fixing bolt 102. Gasket 103. Angle adjuster motor 104. Motor fixing bracket 105. Limit spring clip 106. Spline rod 200. Linkage mechanism 201. Rigid base 202. Rear cross tube 203. Rear connection bracket 204. Seat frame side plate 205. Angle adjuster core component 206. Seat frame front cross plate 207. Step bolt 208. Self-lubricating bearing sleeve 209. Front connection bracket 210. Drive bracket 211. Rivet 212. Core component fixing bracket Specific embodiments

[0028] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] In this article, terms such as "upper, lower, inner, outer" are established based on the positional relationship shown in the drawings. Depending on the different drawings, the corresponding positional relationship may also change accordingly. Therefore, it cannot be understood as an absolute limitation of the protection scope; moreover, relational terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any such actual relationship or order between these components.

[0030] Please refer to Figures 1 to 4 , Figure 1 , which is an overall structural schematic diagram of an automotive seat drive mechanism provided by an embodiment of the present invention; Figure 2 It is a single-sided structural schematic diagram in which the angle adjuster motor and the seat frame front cross plate are separated from the seat frame side plate; Figure 3 Based on Figure 2 , it is a structural schematic diagram in which the installation structure of the regulator motor, the front connection bracket, the drive bracket, the angle adjuster core component, and the core component fixing bracket are further decomposed; Figure 4 It is an exploded schematic diagram of the hinge structure of the front connection bracket, the drive bracket, and the rear connection bracket.

[0031] In a specific embodiment, the automotive seat drive mechanism provided by the present invention is mainly divided into two major parts: a seat frame assembly and a rigid base 201 located below the seat frame assembly. The seat frame assembly, as a whole, can be regarded as a link, which is mainly fixedly composed of a rear cross tube 202, seat frame side plates 204, a seat frame front cross plate 206, etc. Among them, the seat frame front cross plate 206 can also be a large sheet metal basin surface in front of the seat frame. The rigid base 201 can be a slide rail or other fixed bases, and its function is to provide two front and rear rotary joints for the linkage mechanism.

[0032] The seat frame assembly is connected to the rigid base 201 through a symmetric left-right connecting rod mechanism 200. Each side of the connecting rod mechanism 200 mainly consists of a front connecting bracket 209, a rear connecting bracket 203, a driving bracket 210, an angle adjuster core component 205, and a core component fixing bracket 212, etc.

[0033] Specifically, the lateral projection of the front connecting bracket 209 is an upward-arching arc, and in the vertical projection, it is a "Z" shape with two reverse bending angles being obtuse. A convex rib is stamped on the main body part between its two ends, with one side being a groove and the other side being a protruding part.

[0034] One end of the driving bracket 210 that extends backward is narrow, and the end connected to the angle adjuster core component 205 becomes larger and is circular. A notch groove that mates with one side of the angle adjuster core component 205 is provided on its inner circular wall for connection with the angle adjuster core component 205.

[0035] The lower end of the front connecting bracket 209 is provided with a lower mounting hole. This mounting hole is hinged to the front mounting point of the rigid base 201 through a stepped bolt 207. The upper end of the front connecting bracket 209 that extends backward and upward is provided with an upper mounting hole. This mounting hole is hinged to the end of the driving bracket 210 that extends backward through a rivet 211, and it can also be hinged through a bolt.

[0036] The other end of the driving bracket 210 is fixedly connected to one side of the angle adjuster core component 205. The other side of the angle adjuster core component 205 is fixed on the core component fixing bracket 212, and the core component fixing bracket 212 is fixedly connected to the front cross plate 206 of the seat frame of the seat frame assembly.

[0037] The upper end of the rear connecting bracket 203 is provided with an upper mounting hole. The rear cross tube 202 of the seat frame assembly passes through this mounting hole and is fixedly connected to the rear connecting bracket 203. The end of the rear cross tube 202 is fixedly connected to the seat frame side plate 204 of the seat frame assembly. The lower end of the rear connecting bracket 203 is provided with a lower mounting hole. This mounting hole is hinged to the rear mounting point of the rigid base 201 through a stepped bolt 207.

[0038] The angle adjuster core components 205 of the left and right connecting rod mechanisms 200 are connected through a spline rod 106, and the seat frame assembly is provided with an angle adjuster motor 103 for driving the spline rod 106 to rotate.

[0039] Specifically, in the axial direction of the spline rod 106, the driving brackets 210 of each connecting rod mechanism are located inside the front connecting bracket 209, the angle adjuster core components 205 are located inside the driving brackets 210, and the core component fixing brackets 212 are located inside the angle adjuster core components 205.

[0040] The angle adjuster motor 103 is fixed to the outer side of the seat frame side plate 204 of the seat frame assembly. The spline shaft 106 driven by it passes through the seat frame side plate 204 of the seat frame assembly, one end of the drive bracket 210 connected to the angle adjuster core part 205, and the angle adjuster core parts 205 on both sides. The spline shaft 106 plays a role in transmission and can also ensure the synchronization of the movement of the link mechanisms 200 on both sides of the seat.

[0041] The motor fixing bracket 104 is fixedly connected to the outer side of the seat frame side plate 204. The angle adjuster motor 103 is installed on the motor fixing bracket 104 through the motor fixing bolts 101. To avoid the bolt head crushing the plastic hole of the motor, a gasket 102 can be added between the two. The angle adjuster motor 103 is provided with a spline hole capable of outputting power, and a limit spring clip 105 is provided at one end of the spline shaft 106 passing through the spline hole of the angle adjuster motor 103.

[0042] It should be noted here that the angle adjuster core part 205 can be realized by using general technology, and the specific structure thereof will not be described in detail in this article.

[0043] In addition, in order to make the rotation of the hinged parts flexible, self-lubricating bearing sleeves 208 or other lubrication methods can be added to each hinged part.

[0044] Please refer to Figure 5 、 Figure 6 , Figure 5 is a side view of the vehicle seat in the initial state; Figure 6 is a side view of the vehicle seat in the zero-gravity state.

[0045] During operation, through electric control, the angle adjuster motor 103 starts to operate, and the spline hole on it starts to rotate. The spline shaft 106 transmits the rotational movement to the angle adjuster core part 205, causing it to change in angle and driving the drive bracket 210 to rotate clockwise. At this time, under the linkage action of the link mechanism, the front connection bracket 209 will rotate counterclockwise. The drive bracket 210 and the front connection bracket 209 abut against each other, and the included angle gradually becomes larger, causing the front end of the seat pan to tilt upward. At the same time, the backrest motor of the seat drives the backrest to rotate backward, making the seat fully recline, which can create a stronger sense of weightlessness and fully relax the body and mind of the occupant.

[0046] The above embodiments are only the preferred solutions of the present invention, and are not specifically limited thereto. On this basis, targeted adjustments can be made according to actual needs to obtain different implementation manners. For example, the front connection bracket 209 and the drive bracket 210 can be designed into other shapes, or, under the condition that the structural space permits, the angle adjuster motor 103 can be arranged between the two angle adjuster core parts 205, and so on. Since there are many possible implementation manners, they will not be listed one by one here.

[0047] In addition to the above-mentioned vehicle seat drive mechanism, the present invention also provides a vehicle, which can be a fuel vehicle, an electric vehicle or a hybrid vehicle. The vehicle has a vehicle body and a seat provided inside the vehicle body, and the seat is provided with the vehicle seat drive mechanism described above. For the remaining structures of the vehicle, reference may be made to the prior art and will not be elaborated herein.

[0048] The above has introduced in detail the vehicle seat drive mechanism and the vehicle provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An automotive seat drive mechanism, comprising a seat frame assembly and a rigid base located below the seat frame assembly, wherein the seat frame assembly is connected to the rigid base through a left-right symmetric link mechanism, and is characterized in that, Each of the link mechanisms includes a front connection bracket, a rear connection bracket, a drive bracket, a core component of the angle adjuster, and a core component fixing bracket; the lower end of the front connection bracket is hinged to the front mounting point of the rigid base, and the upper end of the front connection bracket extending backward and upward is hinged to one end of the drive bracket extending backward; the other end of the drive bracket is fixedly connected to one side of the core component of the angle adjuster, the other side of the core component of the angle adjuster is fixed on the core component fixing bracket, and the core component fixing bracket is fixedly connected to the seat frame assembly; the upper end of the rear connection bracket is connected to the seat frame assembly, and the lower end of the rear connection bracket is hinged to the rear mounting point of the rigid base; the core components of the angle adjusters of the link mechanisms on the left and right sides are connected by a synchronizing rod, and the seat frame assembly is provided with an angle adjuster motor for driving the synchronizing rod to rotate; in the axial direction of the synchronizing rod, the drive brackets of each of the link mechanisms are located inside the front connection brackets, the core components of the angle adjusters are located inside the drive brackets, and the core component fixing brackets are located inside the core components of the angle adjusters; the end of the drive bracket connected to the core component of the angle adjuster is in a circular shape corresponding to the core component of the angle adjuster, and a notch groove matching one side of the core component of the angle adjuster is provided on its inner circular wall.

2. The vehicle seat drive mechanism according to claim 1, characterized in that, The core component fixing bracket is fixedly connected to the front cross plate of the seat frame of the seat frame assembly.

3. The vehicle seat drive mechanism according to claim 1, wherein, The lateral projection of the front connection bracket is in an arc shape arched upward, and / or the vertical projection of the front connection bracket is in a "Z" shape with two reverse bending angles being obtuse angles.

4. The vehicle seat drive mechanism according to claim 1, wherein, The angle adjuster motor is fixed to the outside of the seat frame side plate of the seat frame assembly, and the synchronizing rod driven by it passes through the seat frame side plate of the seat frame assembly, the end of the drive bracket connected to the core component of the angle adjuster, and the core components of the angle adjusters on both sides.

5. The vehicle seat drive mechanism according to claim 4, characterized in that A motor fixing bracket is provided on the outside of the seat frame side plate, the angle adjuster motor is installed on the motor fixing bracket through motor fixing bolts and gaskets, and a limit spring clip is provided at one end of the synchronizing rod passing through the angle adjuster motor.

6. The vehicle seat drive mechanism according to claim 1, characterized in that, The upper end of the rear connection bracket is provided with an upper mounting hole, the rear cross tube of the seat frame assembly passes through the upper mounting hole and is fixedly connected to the rear connection bracket, and the end of the rear cross tube is fixedly connected to the seat frame side plate of the seat frame assembly.

7. The vehicle seat drive mechanism according to any one of claims 1 to 6, characterized in that, The rigid base is a slide rail or a fixed base, and / or the synchronizing rod is a spline rod.

8. An automobile, comprising a vehicle body and a seat disposed inside the vehicle body, characterized in that, The seat is provided with the vehicle seat drive mechanism according to any one of claims 1 to 7 above.

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