An automotive seat integrating height adjustment and angle adjustment

Abstract

The present invention discloses an automotive seat with integrated height adjustment and angle adjustment, which includes a seat body. The seat body includes a base skeleton and a backrest skeleton, and further includes a height adjustment mechanism and an angle adjustment mechanism. The height adjustment mechanism includes a bottom support member, a rear link, an upper link, and a front link. The angle adjustment mechanism includes a bottom support member, an angle adjustment link, a drive link, a front link, and an upper link. The bottom support member, the front link, and the upper link are common components of the height adjustment mechanism and the angle adjustment mechanism. The bottom support member, the rear link, the upper link, and the front link are sequentially connected by revolute pairs adjacent to each other. The rear link is connected to a height adjustment drive source, and when the height adjustment drive source works, it drives the rear link to move, thereby realizing the height adjustment of the automotive seat. The present invention is convenient for production and manufacturing, reduces the layout space and manufacturing cost of the seat, makes the movement of the automotive seat more stable, and further improves the riding comfort.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive seat adjustment, and specifically, to an automotive seat with integrated height adjustment and angle adjustment. Background Art

[0002] With the increasing development of automotive technology, the safety and comfort of automotive seats, which are in close contact with drivers, have attracted more and more attention. How to better provide convenient seat adjustment functions for drivers or passengers has become a research hotspot.

[0003] End-users have higher and higher requirements for seat attitude adjustment, such as seat inclination adjustment and seat height adjustment. However, for these two adjustment functions, most of the existing adjustment devices are independent adjustments. For example, for height adjustment, the existing solutions include using a four-link mechanism, driven by an E-pump motor (i.e., a gear motor) with gear transmission, or a four-link mechanism, driven by a lead screw motor with lead screw transmission, etc. For inclination adjustment, such as the front inclination adjustment of the seat pan, it is driven by a lead screw motor and adopts a rocker-slider form. The maximum inclination adjustment angle is basically fixed at about 10°. Or, like a rocker-slider device, two lead screw motors directly push the seat upward to make the seat tilt at a larger angle of about 20°. However, to achieve angle and height adjustment above, two sets of independent mechanisms are required. For seats with these two functions, there are no advantages in terms of space and cost. Especially for electric vehicles with an increasingly smaller requirement for seat height, the design of the existing technology no longer has an advantage in terms of space. A lower seat height is beneficial for increasing more battery space to potentially improve the vehicle's range. Therefore, reducing the seat height will be a major trend for automotive seats in the future.

[0004] The height of an automotive seat is an important standard for measuring the quality of a vehicle. In today's society, with increasingly serious pollution and scarce resources, electric vehicles are being more and more widely promoted and applied. Therefore, there is an urgent need for a new type of automotive seat that combines height adjustment and angle adjustment to solve the problems in the existing technology. Summary of the Invention

[0005] The present application provides an automotive seat with integrated height adjustment and angle adjustment, which simplifies the structure, is convenient for manufacturing, reduces the layout space and manufacturing cost, makes the seat move smoothly, and improves the riding comfort.

[0006] The present application is achieved through the following technical solutions:

[0007] An automotive seat with integrated height adjustment and angle adjustment, including a seat body, which includes a base frame and a backrest frame, and also includes a height adjustment mechanism and an angle adjustment mechanism. The height adjustment mechanism includes a bottom support member, a rear link, an upper link, and a front link. The angle adjustment mechanism includes a bottom support member, an angle adjustment link, a drive link, a front link, and an upper link. The bottom support member, the front link, and the upper link are common components of the height adjustment mechanism and the angle adjustment mechanism. The bottom support member, the rear link, the upper link, and the front link are sequentially connected by revolute pairs adjacent to each other. The rear link is connected to a height adjustment drive source. When the height adjustment drive source works, it drives the rear link to move, thereby realizing the height adjustment of the automotive seat. The front end of the bottom support member is connected to the middle of the angle adjustment link by a revolute pair. The front end of the angle adjustment link is connected to the bottom end of the front link by a revolute pair. The other end of the angle adjustment link is connected to one end of the drive link by a revolute pair. The other end of the drive link is connected to the bottom support member by a revolute pair. The drive link is connected to an angle adjustment drive source. When the angle adjustment drive source works, the drive link drives the angle adjustment link to move along the body of the drive link, thereby realizing the angle adjustment of the automotive seat.

[0008] As a preferred embodiment of the present application, the drive link includes a slider and a slide bar. The rear end of the slide bar is connected to the middle of the bottom support member by a revolute pair. Under the drive of an external force, the slider can slide on the slide bar, and the slider is connected to the angle adjustment link by a revolute pair.

[0009] As a preferred embodiment of the present application, the middle of the angle adjustment link is connected to the front end of the bottom support member by a revolute pair. One end of the angle adjustment link is located at the front end of the bottom support member, and the other end of the angle adjustment link is located above the bottom support member.

[0010] As a preferred embodiment of the present application, the specific structure of the revolute pair adopts the form of a hinge or a hinge.

[0011] As a preferred embodiment of the present application, the bottom support member is fixed on a vehicle body bracket, a vehicle body, or a slide rail.

[0012] As a preferred embodiment of the present application, the upper link is fixed on the side plate of the base frame, or the upper link is directly replaced by the base frame.

[0013] As a preferred embodiment of the present application, the height adjustment drive source and the angle adjustment drive source work independently of each other.

[0014] As a preferred embodiment of the present application, the height adjustment drive source uses an E-pump motor to drive a toothed plate to move.

[0015] As a preferred embodiment of the present application, the angle adjustment driving source adopts electric drive, hydraulic drive, pneumatic drive or electromagnetic drive.

[0016] As a preferred embodiment of the present application, the angle adjustment link is divided into two sections by a rotating pair, and an included angle is formed between the axes of the two sections of the angle adjustment link, and the included angle is an acute angle, a right angle or an obtuse angle.

[0017] As a preferred embodiment of the present application, the included angle between the axes of the two sections of the angle adjustment link is an acute angle of 15-85 degrees, 30-80 degrees, 35-75 degrees or 40-70 degrees. Such an acute angle structure can enable the angle adjustment link to achieve large-angle adjustment in place of the overall angle adjustment mechanism through a small range of movement, so that the seat body forms a large inclination state in place or returns from the large inclination state.

[0018] As a preferred embodiment of the present application, the middle part of the bottom support member combined with the rear end of the sliding rod is a branch extending upward from the middle part of the bottom support member for fixing the rotating pair. The branch can be fixed above the middle part of the bottom support member, or the branch is integrally formed with the bottom support member, which is more convenient for the physical and mechanical transmission between the links.

[0019] As a preferred embodiment of the present application, the definition of the middle part is: along the length direction of the bottom support member or the angle adjustment link, it is 1 / 3 to 2 / 3 away from the two end points of the rod.

[0020] In this article, the term "integration of height adjustment and angle adjustment" refers to the integration of the height adjustment mechanism and the angle adjustment mechanism, especially that the height adjustment mechanism and the angle adjustment mechanism include more than one, preferably more than two, more preferably more than three common components, especially common movable components and relatively fixed components that cooperate with the movable components. The movement and cooperation of the common components can simultaneously play the role of adjusting the height of the vehicle seat and adjusting the inclination angle of the vehicle seat.

[0021] In the present invention, the motor used to drive the link can adopt the commonly used motor types in the art, including but not limited to E-pump motors.

[0022] For electric vehicles, currently there is a trend to pursue a smaller seat height, which can improve the riding comfort of many riders. On the other hand, increasing the seat height is beneficial to increasing more battery space to improve the vehicle's cruising range. In order to achieve a better balance between the two pursuits, it is a reasonable choice to control the seat height of the electric vehicle within an appropriate range.

[0023] The design concept of the present invention is to simultaneously achieve the functions of adjusting the height and angle of the vehicle seat while reducing the height of the vehicle seat. In view of this, the inventor uses two sets of motors and cleverly shares some structural components for height adjustment and angle adjustment. Since the needs of each user are different, the functions of height adjustment and angle adjustment of the vehicle seat need to be separated and independently carried out to meet the comfort requirements of users. Therefore, when the height adjustment is carried out in this application, the key component for angle adjustment - the angle adjustment link is locked, and when the angle adjustment is carried out, the key component for height adjustment - the rear link is also locked, thereby realizing that the two different function adjustments can be independently carried out without mutual influence.

[0024] The present invention has the following beneficial effects: Two sets of independent motors are used to separately achieve the height adjustment and angle adjustment of the vehicle seat. The two sets of motors work independently without interference, and some structural components are shared, greatly simplifying the structure, facilitating production and manufacturing, reducing the layout space and manufacturing cost of the seat, making the movement of the vehicle seat more stable, and further improving the riding comfort. Brief Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the overall structure of a vehicle seat with integrated height adjustment and angle adjustment according to this application.

[0026] Figure 2 It is a schematic diagram of the structure of a vehicle seat with integrated height adjustment and angle adjustment according to this application when the angle is in the designed state.

[0027] Figure 3 It is a schematic diagram of the structure of a vehicle seat with integrated height adjustment and angle adjustment according to this application when the angle is in the middle state.

[0028] Figure 4 It is a schematic diagram of the structure of a vehicle seat with integrated height adjustment and angle adjustment according to this application when the angle is in the maximum state.

[0029] Figure 5 It is a schematic diagram of the mechanical drive principle structure of a vehicle seat with integrated height adjustment and angle adjustment according to this application.

[0030] Figure 6 It is a schematic diagram of the mechanical analysis principle structure of a vehicle seat with integrated height adjustment and angle adjustment according to this application.

[0031] Figure 7 It is a schematic diagram of the mechanical movement mode structure of a vehicle seat with integrated height adjustment and angle adjustment according to this application.

[0032] Figure 8Schematic diagram of the mechanical analysis principle of an automotive seat with integrated height adjustment and angle adjustment in three height states of the present application (including Figure 8 a, 8b, 8c).

[0033] Figure 9 As Figure 2 , Figure 3 , Figure 4 Schematic diagram of the mechanical analysis principle of an automotive seat in three angle states (including Figure 9 a, 9b, 9c). Detailed implementation manner

[0034] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings: These embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present invention is not limited to the following embodiments.

[0035] Embodiment:

[0036] As Figure 1 shown, an automotive seat with integrated height adjustment and angle adjustment includes a seat body 1. The seat body 1 includes a base frame 10 and a backrest frame 11, and further includes a height adjustment mechanism and an angle adjustment mechanism. The height adjustment mechanism includes a bottom support member 2, a rear link 6, an upper link 5, and a front link 4. The angle adjustment mechanism includes a bottom support member 2, an angle adjustment link 3, a drive link, a front link 4, and an upper link 5. The bottom support member 2, the front link 4, and the upper link 5 are common components of the height adjustment mechanism and the angle adjustment mechanism. The bottom support member 2 is fixed to a vehicle body bracket, the vehicle body, or a slide rail. The upper link 5 is fixed to the side plate of the base frame, or the upper link is directly replaced by the base frame.

[0037] The bottom support member 2, the rear link 6, the upper link 5, and the front link 4 are sequentially connected by revolute pairs adjacent to each other. The rear link 6 is connected to an E-pump motor. When the E-pump motor operates, it drives the rear link 6 to rotate, thereby realizing the height adjustment of the automotive seat.

[0038] The drive link includes a slider 8 and a slide bar 7. The rear end of the slide bar 7 is connected to the middle of the bottom support member 2 by a revolute pair. The front end of the bottom support member 2 is connected to the middle of the angle adjustment link 3 by a revolute pair. The angle adjustment link 3 is divided into two sections, and the axes of these two sections form an acute angle, a right angle, or an obtuse angle. One section is located between the revolute pair 23 and the revolute pair 38, and the other section is located between the revolute pair 23 and the revolute pair 34. One end of the angle adjustment link 3 is located at the front end of the bottom support member 2, and the other end of the angle adjustment link 3 is located above the bottom support member.

[0039] Preferably, the axes of the two segments of the angle adjustment link 3 form an acute angle of 15 - 85 degrees, preferably 30 - 80 degrees, more preferably 35 - 75 degrees, and even more preferably 40 - 70 degrees. Such an acute angle structure enables the angle adjustment link 3 to achieve a large in-situ angle adjustment of the entire angle adjustment mechanism through a small movement, so that the seat body 1 can form a large inclination state (recline) in-situ or return from the large inclination state (recline).

[0040] In an alternative embodiment, the middle part of the bottom support 2 combined with the rear end of the sliding rod 7 is a branch extending upward from the middle part of the bottom support 2 to fix the rotary pair 27. This branch can be fixed above the middle part of the bottom support 2, or this branch is integrally formed with the bottom support 2. The setting of this branch not only facilitates more choices for the layout position / space of the driving devices (height adjustment driving source and angle adjustment driving source, not shown) such as lead screw motors for driving the height adjustment mechanism and the angle adjustment mechanism to work, but also helps to maintain the structural integrity of the bottom support 2, thereby ensuring that the bottom support 2 has sufficient mechanical strength and service life.

[0041] The middle part of this embodiment is defined as: along the length direction of the bottom support or the angle adjustment link, it is 1 / 3 - 2 / 3 away from the two end points of the rod.

[0042] The front end of the angle adjustment link 3 is connected to the bottom end of the front link 4 by a rotary pair, and the other end of the angle adjustment link 3 is connected to the slider 8 by a rotary pair. The driving link is connected to a lead screw motor. When the lead screw motor works, the slider 8 slides on the sliding rod 7, and the driving link drives the angle adjustment link 3 to move along the body of the driving link, thereby realizing the angle adjustment of the vehicle seat. The height adjustment driving source and the angle adjustment driving source work independently. The specific structure of the rotary pair can adopt a hinge.

[0043] The rotary pairs in this application can all be the same. For the convenience of expressing the connection structure relationship between the links, different symbols are marked for the rotary pairs here, and the function is only to refer to the structural position without any difference: rotary pair 23; rotary pair 26; rotary pair 27; rotary pair 34; rotary pair 38; rotary pairs 45, 56, 78.

[0044] As Figure 2 、 3 、4 show the schematic diagrams of the seat structures in the designed, middle, and maximum angle states respectively, Figure 4 which include the bottom support 2, the angle adjustment link 3, the front link 4, the upper link 5, the rear link 6, the sliding rod 7, and the slider 8, Figure 4 The seat in this state is suitable for the occupant to lie flat and rest.

[0045] As Figure 5As shown, it is a schematic structural diagram of the mechanical drive principle of an automotive seat. The left side represents the height adjustment mechanism, and the right side represents the angle adjustment mechanism. Among them, the height adjustment mechanism uses an E-pump motor to drive the toothed plate to move. B represents the large gear, and S represents the small gear. The angle adjustment mechanism uses a lead screw motor, and 3 in the figure is the angle adjustment link. The meanings of the remaining symbols are the same as above.

[0046] As Figure 6 shown, although the height adjustment mechanism and the angle adjustment mechanism share some links, during operation, the two mechanisms work independently. When the height adjustment mechanism comes into play, the E-pump motor drives the rear link 6 to rotate upward. The rotation of the rear link 6 drives the upper link 5 to move upward, and the upward movement of the upper link 5 further drives the front link 4 to rotate forward, thus realizing the height adjustment of the seat. It should be noted that when the seat is adjusted in height, the angle adjustment link 3 is always in a locked state.

[0047] As Figure 6 、 7 shown, Figure 7 it is an analysis diagram of the mechanical movement mode of the seat angle from the designed state to the maximum state. When the angle adjustment mechanism comes into play, the lead screw motor starts and drives the slider 8 to slide backward and downward on the slide bar 7, thereby driving the angle adjustment link 3 between the rotating pairs 23 and 38 to rotate downward. Under the action of the rotating pair 23, the angle adjustment link 3 between the rotating pairs 23 and 34 rotates upward, and then drives the front link 4 to move upward. The upward movement of the front link 4 drives the upper link 5 to rotate backward, thus realizing the angle adjustment of the seat. It is worth noting that when the seat is adjusted in angle, the rear link 6 is always in a locked state relative to the upper link 5.

[0048] As Figure 8 shown, Figure 8 a is a schematic structural diagram of the mechanical analysis principle in the designed height state of the seat, Figure 8 b is a schematic structural diagram of the mechanical analysis principle in the middle height state of the seat, Figure 8 a is a schematic structural diagram of the mechanical analysis principle in the maximum height state of the seat.

[0049] As Figure 9 shown, Figure 9 a is a schematic structural diagram of the mechanical analysis principle of the automotive seat in the designed angle state, Figure 9 b is a schematic structural diagram of the mechanical analysis principle of the automotive seat in the middle angle state, Figure 9 c is a schematic structural diagram of the mechanical analysis principle of the automotive seat in the maximum angle state.

[0050] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An automotive seat integrated with height adjustment and angle adjustment, comprising a seat body, and the seat body includes a base skeleton and a backrest skeleton, characterized in that, It further includes a height adjustment mechanism and an angle adjustment mechanism. The height adjustment mechanism includes a bottom support, a rear link, an upper link, and a front link. The angle adjustment mechanism includes a bottom support, an angle adjustment link, a drive link, a front link, and an upper link. The bottom support, the front link, and the upper link are common components of the height adjustment mechanism and the angle adjustment mechanism. The bottom support, the rear link, the upper link, and the front link are sequentially connected by revolute pairs adjacent to each other. The rear link is connected to a height adjustment drive source. When the height adjustment drive source works, it drives the rear link to move, thereby realizing the height adjustment of the vehicle seat. The front end of the bottom support is connected to the middle of the angle adjustment link by a revolute pair. The front end of the angle adjustment link is connected to the bottom end of the front link by a revolute pair. The other end of the angle adjustment link is connected to one end of the drive link by a revolute pair. The other end of the drive link and the bottom support are connected by a revolute pair. The drive link is connected to an angle adjustment drive source. When the angle adjustment drive source works, the drive link drives the angle adjustment link to move along the body of the drive link, thereby realizing the angle adjustment of the vehicle seat; The drive link includes a slider and a slide bar. The rear end of the slide bar and the middle of the bottom support are connected by a revolute pair. Under the drive of an external force, the slider can slide on the slide bar. The slider and the angle adjustment link are connected by a revolute pair; The middle of the angle adjustment link and the front end of the bottom support are connected by a revolute pair. One end of the angle adjustment link is located at the front end of the bottom support, and the other end of the angle adjustment link is located above the bottom support; The angle adjustment link is divided into two sections by a revolute pair, and an included angle is formed between the axes of the two sections of the angle adjustment link; The included angle between the axes of the two sections of the angle adjustment link is an acute angle of 15 - 85 degrees. Such an acute angle structure enables the angle adjustment link to achieve large-angle in-situ adjustment of the entire angle adjustment mechanism through a small range of movement, so that the seat body can form a large inclination state in-situ or reset from the large inclination state; The definition of the middle part is: along the length direction of the bottom support or the angle adjustment link, it is 1 / 3 - 2 / 3 away from the two end points of the rod; 2. The vehicle seat according to claim 1, wherein, The specific structure of the revolute pair adopts the form of a hinge or a hinge; 3. The vehicle seat according to claim 1, characterized in that, The bottom support is fixed on the vehicle body bracket, the vehicle body, or the slide rail; 4. The automotive seat according to claim 1, characterized in that, The upper link is fixed on the side plate of the base frame, or the upper link is directly replaced by the base frame; 5. The vehicle seat according to claim 1, characterized in that The height adjustment drive source and the angle adjustment drive source work independently; 6. The vehicle seat according to claim 1, characterized in that, The height adjustment drive source uses an E-pump motor to drive the toothed plate to move; 7. The vehicle seat according to claim 1, characterized in that, The angle adjustment drive source adopts electric drive, hydraulic drive, pneumatic drive, or electromagnetic drive; 8. The vehicle seat according to claim 1, characterized in that, The middle part of the bottom support combined with the rear end of the slide bar is a branch extending upward from the middle of the bottom support to fix the revolute pair. This branch can be fixed above the middle of the bottom support, or this branch is integrally formed with the bottom support.

Images