WO2023201917A1

WO2023201917A1 - Cushion adjusting mechanism and seat

Info

Publication number: WO2023201917A1
Application number: PCT/CN2022/106710
Authority: WO
Inventors: 唐勋; 倪梦强
Original assignee: 延锋国际汽车技术有限公司
Priority date: 2022-04-21
Filing date: 2022-07-20
Publication date: 2023-10-26
Also published as: CN116968601A

Abstract

A cushion adjusting mechanism, which comprises a left cushion side plate (10a), a right cushion side plate (10b), a front pipe (20), a rear pipe (30), a left-front upper connecting rod (70a), a right-front upper connecting rod (70b), a left-front lower connecting rod (40a), a right-front lower connecting rod (40b), a synchronizing rod (50), a left-rear connecting rod (80a), a right-rear connecting rod (80b), and a high-speed electric motor assembly (100). When the height of the cushion is adjusted, the high-speed electric motor assembly (100) drives the left-rear connecting rod (80a), the right-rear connecting rod (80b), the left-front lower connecting rod (40a), the right-front lower connecting rod (40b), the left-front upper connecting rod (70a), the right-front upper connecting rod (70b), the left cushion side plate (10a) and the right cushion side plate (10b) to move to realize linkage of all the connecting rods of a five-connecting-rod mechanism, so that during a height adjusting process of the cushion, a change in the angle of the cushion is reduced, especially since the angle remains substantially unchanged.

Description

Cushion adjustment mechanism and seat

Technical field

The present invention relates to the technical field of seats, and in particular to a seat cushion adjustment mechanism and a seat including the seat cushion adjustment mechanism. The seat may be suitable for use in motor vehicles, in particular passenger cars.

Background technique

The four-bar linkage mechanism is commonly used in height adjustment of car seats. The four-bar linkage has only one degree of freedom, allowing the seat cushion to move along a fixed trajectory. When an occupant sits on the seat, for occupants of the same height and different weight, the distance between the thighs and the front end of the seat cushion frame is different, so the pressure on the thighs is different. Therefore, the existing seat with a four-bar linkage mechanism as the height adjustment mechanism cannot simultaneously meet the comfort needs of passengers of the same height and different weights for the seat when in use.

CN206049420U discloses a five-link seat height adjustment mechanism, in which the left and right slide connecting plates are connected to the body floor through slide rails; one end of the left and right front lower links is hinged on the left and right slides through bolts. On the road connecting plate, the other ends of the left and right front lower links are hinged to one end of the left and right front upper links and the left and right wall panels through bolts; the other ends of the left and right front upper links are hinged together. One end is welded to the rotating sleeve to form a left and right welded assembly; the front cross member passes through the left and right welded assemblies and is welded to the left and right wall panels; one end of the left and right rear connecting rods passes through The bolts are hinged on the left and right slideway connecting plates, the other ends of the left and right rear connecting rods are welded to the rear cross beam, and the rear cross beam is riveted to the left and right wall panels. The screw motor is fixed on the side plate of the seat cushion. One end of the screw motor is hinged with the upper front connecting rod. The screw motor can push the upper front connecting rod to rotate to adjust the height of the front end of the cushion.

In this prior art, the screw motor is fixed on the side panel of the seat cushion and is too close to the passenger/dummy, making the seat less comfortable. At the same time, since the driving form of the screw motor is push type, the positions of the screw and the synchronization rod are relatively limited, making the overall adjustment stroke of the screw motor small. It is only suitable for adjusting the front end of ordinary seat cushions, and cannot achieve zero adjustment of the seat. Gravity function. When adjusting the height of the rear end, the mechanism diagram is a four-bar linkage (because the fifth link is locked by the motor), and usually a non-parallelogram mechanism. During the rear-end height adjustment process, the angle between the seat cushion and the horizontal plane is not a fixed value (the angle may become larger or smaller, depending on the length relationship between the front and rear links), which will cause the seat cushion angle to change passively. Big change. Typically, the angle variation can be up to 5°, or even greater. In addition, the front cross member and the front upper link are rotatably connected. The front adjustment motor can only lock the five-bar linkage on one side, while the five-bar linkage on the other side is free, which will cause the left and right sides to The rigidity of structures varies greatly. In addition, due to various limitations of the four-link mechanism used for seat height adjustment (such as limitations on the height adjustment stroke and link force), it is difficult to achieve equal lengths of the front and rear links in the four-link mechanism. , so during the height adjustment process of the seat, there is a problem that the angle of the seat cushion changes passively.

Contents of the invention

One of the technical problems to be solved by the present invention is to provide an improved seat cushion adjustment mechanism, in particular, it can solve the problem that the seat cushion angle will passively change undesirably during the seat height adjustment process.

The second technical problem to be solved by the present invention is to provide a seat, especially a zero-gravity seat, including the above-mentioned cushion adjustment mechanism. The seat may be suitable for use in motor vehicles, in particular passenger cars.

In order to achieve the purpose of the present invention, one aspect of the present invention relates to a seat cushion adjustment mechanism, which includes:

Left cushion side panel and right cushion side panel;

A front tube, the left end of the front tube is fixedly connected to the front side of the left seat cushion side panel, and the right end of the front tube is fixedly connected to the front side of the right seat cushion side panel;

A rear tube, the left end of the rear tube is hinged to the rear side of the left seat cushion side panel, and the right end of the rear tube is hinged to the rear side of the right seat cushion side panel;

A left rear link and a right rear link, the upper end of the left rear link is fixedly connected to the left end of the rear tube, and the upper end of the right rear link is fixedly connected to both right ends of the rear tube;

The upper left front link and the right front upper link, the upper end of the left front upper link is hinged with the front side of the left seat cushion side panel, and the upper end of the right front upper link is hinged with the front side of the right seat cushion side panel;

It is characterized in that the cushion adjustment mechanism also includes:

A left front lower link, a right front lower link, a synchronizer rod and a high-profile motor assembly;

The lower end of the left front upper link is hinged to the left front lower link, and the lower end of the right front upper link is hinged to the right front lower link;

The left end of the synchronization rod is fixedly connected to the left front lower link, and the right end of the synchronization rod is fixedly connected to the right front lower link;

One end of the high-profile motor assembly is hinged to the front tube, and the other end of the high-profile motor assembly is hinged to one of the left rear link and the right rear link, such as the left rear link.

In a preferred embodiment of the present invention, the high-profile motor assembly is configured to drive the left rear link, the right rear link, the left front lower link, and the left front lower link when the seat cushion height is adjusted. The right front lower link, left front upper link, right front upper link, and left and right seat cushion side plates move to realize the linkage of each link of the five-link mechanism.

In a preferred embodiment of the present invention, the seat cushion adjustment mechanism is configured such that when the seat cushion height is adjusted, during the height adjustment process, the change in angle of the seat cushion is related to the locking of the left front lower link and the right front lower link. is reduced compared to the case. Preferably, the change in angle is substantially imperceptible to the occupant.

In a preferred embodiment of the present invention, the seat cushion adjustment mechanism is configured such that when the seat cushion height is adjusted, during the height adjustment process, the change in the angle of the seat cushion is ≤3°, especially ≤2°, especially ≤1 °. In the known prior art, during the height adjustment process, the seat cushion angle can change up to 5° or even more, and this angle change can usually be noticed by the occupant.

In a preferred embodiment of the present invention, the seat cushion adjustment mechanism further includes a structural component that connects the other one of the left rear link and the right rear link to the front lower link on the same side. coupling. Preferably, the structural component is a zero-gravity motor component or a connecting rod. In a preferred embodiment of the present invention, one end of the structural component is hinged to the corresponding front lower link, and the other end of the structural component is hinged to the corresponding rear link.

In a preferred embodiment of the present invention, the high-profile motor assembly includes: a high-profile motor and a transmission mechanism coupled with the high-profile motor.

In a preferred embodiment of the present invention, the high-profile motor assembly includes: a high-profile motor, a high-profile screw driven by the high-profile motor, and a high-profile threaded pipe driven by the high-profile screw; the high-profile motor serves as a high-profile motor One end of the assembly is hinged to the front tube, and the end of the high-profile threaded tube serves as the other end of the high-profile motor assembly to be hinged to the one rear connecting rod; when adjusting the height of the seat cushion, the high-profile motor drives the high-profile screw through the high-profile screw. The high-profile threaded pipe performs telescopic movement. Here, the high-profile lead screw and the high-profile threaded tube form the lead screw nut mechanism.

In a preferred embodiment of the present invention, the high-profile motor assembly further includes a high-profile motor bracket, the high-profile motor bracket is fixedly connected to the front tube, and the high-profile motor in the high-profile motor assembly is hinged on the high-profile motor. on the stand.

In a preferred embodiment of the present invention, the left front lower link and right front lower link and the left rear link and right rear link are respectively hinged with the base.

In a preferred embodiment of the present invention, the seat cushion adjustment mechanism further includes: a slide rail assembly, which includes a left slide rail assembly and a right slide rail assembly.

In a preferred embodiment of the present invention, the left front lower link is hinged to the front end of the left upper slide rail in the left slide rail assembly, and the right front lower link is hinged to the right upper slide rail in the right slide rail assembly. on the front end of the rail; and/or the lower end of the left rear link is hinged on the rear side of the upper left slide rail in the left slide rail assembly, and the lower end of the right rear link is hinged on the right slide rail assembly on the rear side of the upper right slide rail.

In a preferred embodiment of the present invention, the seat cushion adjustment mechanism further includes: a zero-gravity motor assembly, one end of the zero-gravity motor assembly is hinged on the right front lower link, and the other end of the zero-gravity motor assembly is hinged to the right front lower link. One end is hinged to the right rear link, wherein the zero-gravity motor assembly is configured to drive the seat cushion to adjust to the zero-gravity position when the seat cushion is adjusted in zero gravity; and during the height adjustment process of the seat cushion, The left rear link and right rear link rotate, the right rear link rotates to drive the right front lower link to rotate through the zero-gravity motor assembly, and the right front lower link rotates to drive the left front lower link to rotate through the synchronization rod.

In a preferred embodiment of the present invention, the zero-gravity motor assembly includes a zero-gravity motor and a transmission mechanism coupled with the zero-gravity motor.

In a preferred embodiment of the present invention, the zero-gravity motor assembly includes: a zero-gravity motor, a zero-gravity screw rod driven by the zero-gravity motor, and a zero-gravity threaded pipe driven by the zero-gravity screw rod; The zero-gravity motor is hinged to the right front lower link, and the end of the zero-gravity threaded pipe is hinged to the right rear link; when adjusting the seat cushion in zero-gravity, the zero-gravity motor is driven by a zero-gravity screw screw The zero-gravity threaded tube performs telescopic movement to drive the seat cushion to adjust to the zero-gravity position. Here, the zero-gravity screw and the zero-gravity threaded tube constitute the screw-nut mechanism.

In a preferred embodiment of the present invention, the hinge point of the lower end of the right rear link and the base is located above the hinge point of the other end of the zero-gravity motor assembly and the right rear link; or The hinge point between the lower end of the right rear link and the base is located below the hinge point between the other end of the zero gravity motor assembly and the right rear link; or the lower end of the right rear link and the base The hinge point of the seat, the other end of the zero-gravity motor assembly, and the hinge point of the right rear link are coaxial in the Y direction.

In a preferred embodiment of the present invention, the rear hinge point of the right rear link and the upper right slide rail in the right slide rail assembly is located between the end of the zero-gravity threaded tube in the zero-gravity motor assembly and the above the hinge point of the right rear link; or the rear hinge point of the right rear link and the upper right slide rail in the right slide rail assembly is located between the end of the zero gravity threaded tube in the zero gravity motor assembly and Below the hinge point of the right rear link; or the rear hinge point of the right rear link and the upper right slide rail in the right slide rail assembly and the end of the zero gravity threaded tube in the zero gravity motor assembly It is coaxial with the hinge point of the right rear upper link in the Y direction.

In the sense of the present invention, the Y direction represents the transverse direction of the seat. Typically, when the seat is installed in the vehicle, the Y direction is consistent with the Y direction of the vehicle coordinate system or the transverse direction of the vehicle.

In a preferred embodiment of the present invention, the zero-gravity motor assembly is located inside the right slide rail assembly and adjacent to the right slide rail assembly, and the zero-gravity motor is located inside the right slide rail assembly. Upper position.

In a preferred embodiment of the present invention, the high-profile motor assembly is located inside the left slide rail assembly and adjacent to the left slide rail assembly.

In a preferred embodiment of the present invention, the seat cushion adjustment mechanism further includes: a connecting rod, which replaces the aforementioned zero-gravity motor assembly, and one end of the connecting rod is hinged to the right front lower connecting rod. The other end of the connecting rod is hingedly connected to the right rear connecting rod. During the height adjustment process of the seat cushion, the left rear link and the right rear link rotate, the rotation of the right rear link drives the right front lower link to rotate through the link, and the right front lower link rotates through the synchronization The rod drives the left front lower link to rotate.

A second aspect of the present invention relates to a seat, which includes a seat cushion adjustment mechanism according to any of the above embodiments.

In a preferred embodiment of the present invention, during the adjustment process of the seat cushion adjustment mechanism of the present invention from the initial state to the zero-gravity state, the zero-gravity motor assembly can be used to adjust the relative angle of the right front lower link and the right rear link. The rear link adjusts the position of the rear tube. While adjusting the position of the rear tube, adjust the position of the left rear link, and at the same time adjust the position of the front tube through the non-working high-profile motor assembly, and then adjust the position of the left front upper link through the front tube and the left seat cushion side plate. Therefore, the relative angle of the left front lower link and the left rear link is adjusted to achieve zero-gravity angle adjustment of the seat cushion.

In addition, in a preferred embodiment of the present invention, the zero-gravity motor is located at an upper position inside the right slide rail assembly, away from the center of gravity of the human body, so that the adjustment process of the zero-gravity motor assembly is more comfortable. At the same time, during the zero-gravity adjustment process, the zero-gravity motor screw is far away from the synchronization rod, so the seat cushion can be adjusted at a large angle for the zero-gravity function.

In a preferred embodiment of the present invention, in the seat cushion adjustment mechanism of the present invention, when adjusting the height of the seat cushion, the high-adjustment motor assembly is started (at this time, the zero-gravity motor assembly does not work, and is similar to a connecting rod, moving the right front lower The connecting rod is connected with the right rear connecting rod). This high-profile motor assembly realizes the movement of the front tube and the left rear link. The front tube simultaneously drives the left front upper link and the right front upper link through the left and right seat cushion side plates. The movements of the left front upper link and the right front upper link drive the movements of the left front lower link and right front lower link; in addition, the left rear link drives the movement of the rear tube, and the rear tube simultaneously drives the movement of the right rear link, thereby realizing the seat cushion Height adjustment. During the height adjustment process of the seat cushion, the angles of the left rear link and the right rear link change, driving the left front lower link and the right front lower link to link up, allowing the front and rear ends of the seat cushion to be height adjusted at the same time, which can basically maintain the seat angle. Nonetheless, typically the angular changes are essentially imperceptible to the occupants, eg they do not exceed 1°. At this time, since the right front lower link and the right rear link are linked, the zero-gravity motor assembly will not be significantly pulled. In the process of simultaneous height adjustment of the front and rear ends of the seat cushion, each link of the five-link mechanism is linked, so that the front and rear ends of the seat cushion can be height adjusted at the same time, basically keeping the seat cushion angle unchanged.

In a preferred embodiment of the present invention, the left and right ends of the synchronizing rod of the present invention are fixedly connected to the left front lower link and the right front lower link, connecting the left front lower link and the right front lower link together, and the left front lower link It is rigidly connected to the right front lower link and can transmit motion through the synchronizer rod. The connection relationship between the rear tube and the left and right rear links is similar.

In a preferred embodiment of the present invention, compared with the prior art, the present invention may have the following features:

1. The present invention can realize both the front-end adjustment of the seat cushion and the rear-end adjustment of the seat cushion. Through the joint work of these two adjustment methods, it can not only achieve the "zero gravity posture", but also satisfy the requirements of the seat cushion height for passengers of different heights. needs to improve comfort.

2. The zero-gravity motor assembly couples the right front lower link and the right rear link, and is located above the inside of the right slide rail assembly and under the seat cushion, away from the center of gravity of the human body. The zero-gravity motor assembly improves comfort while not relying on slide rails.

3. Directly couple the left front lower link and the left rear link through the zero-gravity motor assembly, which can save the motor mounting bracket and reduce costs.

4. In the seat cushion height adjustment, by changing the angle of the left rear link and the right rear link, and utilizing the linkage of each link of the five-bar linkage mechanism, the rear end of the seat cushion can be adjusted.

Description of the drawings

Figure 1 is a schematic structural diagram in the form of a perspective view of the seat cushion adjustment mechanism of the present invention viewed from one direction.

Figure 2 is a schematic structural diagram in the form of a top view of the seat cushion adjustment mechanism of the present invention viewed from one direction.

Figure 3 is an exploded schematic diagram of the seat cushion adjustment mechanism of the present invention.

Figure 4 is a side view of the seat cushion adjustment mechanism according to Embodiment 1 of the present invention (with zero gravity function).

Figure 5 is a simplified schematic diagram of the seat cushion adjustment mechanism in Embodiment 1 of the present invention in the highest high-profile, forward-inclined design position (with zero-gravity function).

Figure 6 is a simplified schematic diagram of the seat cushion adjustment mechanism in Embodiment 1 of the present invention in a high-profile, lowest, forward-inclined design position (with a zero-gravity function).

7 is a simplified schematic diagram of the first four-link form and the second four-link form (with zero gravity function) compared with the seat cushion adjustment mechanism of Embodiment 1 of the present invention. Among them: the solid line in the figure indicates that the first four-link form and the second four-link form are in the initial position, and the dotted line in the figure indicates that the first four-link form and the second four-link form are in the adjusted position. .

Figure 8 is a simplified schematic diagram of the seat cushion adjustment mechanism in Embodiment 2 of the present invention in the highest high-profile, forward-inclined design position (without zero-gravity function).

Figure 9 is a simplified schematic diagram of the seat cushion adjustment mechanism in Embodiment 2 of the present invention in the lowest high-profile, forward-inclined design position (without zero-gravity function).

Figure 10 is a side view of the seat cushion adjustment mechanism according to Embodiment 3 of the present invention (with zero gravity function).

Figure 11 is a simplified schematic diagram of the seat cushion adjustment mechanism in Embodiment 3 of the present invention in the highest high-profile, forward-inclined design position (with zero gravity function).

Figure 12 is a simplified schematic diagram of the seat cushion adjustment mechanism in Embodiment 3 of the present invention in the lowest high-profile, forward-inclined design position (with zero gravity function).

Figure 13 is a simplified schematic diagram of the third four-link form (with zero gravity function) compared with the seat cushion adjustment mechanism of Embodiment 3 of the present invention. Among them: the solid line in the figure indicates that the third four-link form is in the initial position, and the dotted line in the figure indicates that the third four-link form is in the adjusted position.

Figure 14 is a side view of the seat cushion adjustment mechanism according to Embodiment 4 of the present invention (with zero gravity function).

Figure 15 is a simplified schematic diagram of the seat cushion adjustment mechanism in Embodiment 4 of the present invention in the highest high-profile, forward-inclined design position (with zero gravity function).

Figure 16 is a simplified schematic diagram of the seat cushion adjustment mechanism in Embodiment 4 of the present invention in the lowest high-profile, forward-inclined design position (with zero-gravity function).

Figure 17 is a simplified schematic diagram of the fourth four-link form and the fifth four-link form (with zero gravity function) compared with the seat cushion adjustment mechanism of Embodiment 4 of the present invention. Among them: the solid line in the figure indicates that the fourth four-link form and the fifth four-link form are in the initial position, and the dotted line in the figure indicates that the fourth four-link form and the fifth four-link form are in the adjusted position. .

Figure 18 is a simplified schematic diagram of the seat cushion adjustment mechanism in Embodiment 5 of the present invention in the highest high-profile, forward-inclined design position (without zero-gravity function).

Figure 19 is a simplified schematic diagram of the seat cushion adjustment mechanism in Embodiment 5 of the present invention in the lowest high-profile, forward-inclined design position (without zero-gravity function).

Figure 20 is a simplified schematic diagram of the seat cushion adjustment mechanism of the present invention in a zero-gravity posture.

Figure 21 is a schematic structural diagram in the form of a perspective view of the seat cushion adjustment mechanism of the present invention in a zero-gravity posture.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The following “left” and “right” are viewed from the rear side of the seat and toward the front side.

Referring to Figures 1 to 3, the seat cushion adjustment mechanism shown in the figures includes: slide rail assembly, left seat cushion side plate 10a, right seat cushion side plate 10b, front tube 20, rear tube 30, left front lower link 40a, right front lower link Connecting rod 40b, synchronizing rod 50, left front upper connecting rod 70a, right front upper connecting rod 70b, left rear connecting rod 80a, right rear connecting rod 80b, zero gravity motor assembly 90, high-profile motor assembly 100. Of course, the above-mentioned slide rail assembly and zero-gravity motor assembly 90 can be configured as needed. If zero-gravity adjustment of the seat cushion is not required, the zero-gravity motor assembly 90 can be eliminated. If sliding adjustment of the seat position is not required, the slide rail assembly can also be eliminated.

The above-mentioned slide rail assembly includes a left slide rail assembly 60a and a right slide rail assembly 60b.

The left and right ends of the front tube 20 are fixedly connected to the front sides of the left seat cushion side plate 10a and the right seat cushion side plate 10b respectively, and cannot rotate. The left and right ends of the rear tube 30 are hinged to the rear sides of the left seat cushion side panel 10a and the right seat cushion side panel 10b respectively, and can rotate.

Here, the fixed connection between the front tube 20 and the two seat cushion side panels can be understood as the front tube 20 cannot move relative to the two seat cushion side panels, which also covers the following embodiments: the front tube 20 is directly connected to the seat cushion side panels 10a. Fixed connection (first connection), such as welding, and the front tube 20 is generally connected to the seat cushion side plate 10b, for example, non-rotatably but axially movably connected, wherein due to the existence of the first connection, the front tube 20 There will be no axial movement relative to the seat cushion side plate 10b. For example, the front tube 20 is inserted into the mounting hole of the seat cushion side panel 10a and welded, and the front tube 20 is inserted into the mounting hole of the seat cushion side panel 10b without being welded. Preferably, the front tube 20 is directly and fixedly connected to the two seat cushion side panels respectively. The same applies to the fixed connection relationship of the synchronizer rod 50 to the two front lower links, and to the fixed connection relationship of the rear tube 30 to the two rear links.

The left front lower link 40a is hinged to the left front bracket 61a in the left slide rail assembly 60a and can rotate. The right front lower link 40b is hinged to the right front bracket 61b in the right slide rail assembly 60b and can rotate. Of course, if the slide rail assembly is not needed, the left front lower link 40a and the right front lower link 40b can be directly hinged on other types of bases, such as the floor or the body floor.

The left and right ends of the synchronization rod 50 are fixedly connected to the left front lower link 40a and the right front lower link 40b respectively and cannot rotate. In this way, the left front lower link and the right front lower link are rigidly connected, and motion can be transmitted through the synchronizer rod. The connection relationship between the rear tube and the left and right rear links is similar.

The upper end of the left front upper link 70a is hingedly connected to the front side of the left seat cushion side plate 10a and can rotate. The lower end of the left front upper link 70a is hingedly connected to the left front lower link 40a and can rotate. The upper end of the right front upper link 70b is hinged with the front side of the right seat cushion side plate 10b and can rotate. The lower end of the right front upper link 70b is hinged to the right front lower link 40b and can rotate.

The upper ends of the left rear link 80a and the right rear link 80b are respectively fixedly connected to the left and right ends of the rear pipe 30 and cannot rotate. The lower end of the left rear link 80a and the lower end of the right rear link 80b are hinged to the left rear bracket 62a in the left slide rail assembly 60a and the right rear bracket 62b in the right slide rail assembly 60b respectively, and can rotate.

When the zero-gravity motor assembly 90 is used to adjust the seat cushion in zero-gravity, the zero-gravity motor assembly 90 may be located inside the right slide rail assembly 60b and adjacent to the right side slide rail assembly 60b. The zero-gravity motor assembly 90 includes a zero-gravity motor 91 , a zero-gravity screw 92 driven by the zero-gravity motor 91 , and a zero-gravity threaded pipe 93 driven by the zero-gravity screw 92 for telescopic movement. The zero-gravity screw 92 and the zero-gravity threaded tube 93 constitute a screw nut mechanism. The zero-gravity motor 91 is located at an upper position inside the right slide rail assembly 60b and is hinged to the right front lower link 40b. The end of the zero-gravity threaded pipe 93 is hinged to the right rear link 80b.

The high-profile motor assembly 100 is located inside the left slide rail assembly 60a and adjacent to the left slide rail assembly 60a. It includes a high-profile motor bracket 101, a high-profile motor 102, a high-profile screw 103 driven by the high-profile motor 102, and a high-profile screw 103 driven by the high-profile screw 103. High-profile threaded pipe 104 that performs telescopic movement. The high-profile motor bracket 101 is fixedly connected to the front tube 20 and cannot rotate. The high-profile motor 102 is hinged on the high-profile motor bracket 101 and can rotate. The end of the high-profile threaded pipe 104 is hingedly connected to the left rear link 80a.

It goes without saying that the zero-gravity motor assembly 90 and the high-profile motor assembly 100 can interchange positions, that is, the zero-gravity motor assembly 90 is arranged on the left side and the high-profile motor assembly 100 is arranged on the right side.

Referring to Figures 20 and 21, when the seat cushion starts to adjust from the initial position (if the seat cushion is not in the initial position at this time, the seat cushion can be returned to the initial position first) to the zero-gravity position, the zero-gravity motor 91 and the zero-gravity screw 92 drives the zero-gravity threaded pipe 93 to move. The movement of the zero-gravity threaded pipe 93 pulls the right rear connecting rod 80b to move around its hinge point with the right rear bracket 62b in the right slide rail assembly 60b. The right rear connecting rod 80b moves at the same time. Rear tube 30 movement.

When the zero-gravity motor 91 and the zero-gravity screw 92 drive the zero-gravity threaded pipe 93 to move, the zero-gravity motor 91 drives the right front lower link 40b to move around the hinge point between it and the right front bracket 61b in the right slide rail assembly 60b. , the movement of the right front lower link 40b drives the movement of the right front upper link 70b; at the same time, the movement of the rear tube 30 drives the left rear link 80a to move around its hinge point with the left rear bracket 62a in the left slide rail assembly 60a. The movement of the rear link 80a drives the front tube 20 to move in synchronization with the movement of the right front upper link 70b through the high-profile motor assembly 100 (the high-profile motor assembly 100 is not working at this time and is equivalent to a connecting rod) to realize the seat cushion. The front end adjusts, allowing the cushion to move from its initial position to a zero-gravity position.

The following embodiment is directed to the hinge point E between the right rear link 80b and the right rear bracket 62b in the right slide rail assembly 60b relative to the end of the zero-gravity threaded tube 93 in the zero-gravity motor assembly 90 and the right rear link 80b. The different positions of the hinge point F are illustrated.

Example 1

Referring to Figures 4 to 7, this embodiment is directed to the hinge point E between the right rear link 80b and the right rear bracket 62b in the right slide rail assembly 60b being located at the end of the zero gravity threaded tube 93 in the zero gravity motor assembly 90 Above the hinge point F between the right rear link 80b and the right rear link 80b.

In this embodiment, when the height of the seat cushion needs to be adjusted, the high-regulation motor assembly 100 is started (at this time, the zero-gravity motor assembly 90 does not work, and is similar to a connecting rod connecting the right front lower connecting rod and the right rear connecting rod together), The high-profile motor 102 drives the high-profile screw 103 to rotate, and the high-profile screw 103 drives the high-profile threaded tube 104 to move. The high-profile motor 102 and the high-profile threaded tube 104 simultaneously drive the movement of the front tube 20 and the left rear link 80a. The front tube 20 passes through the left seat cushion. The side plate 10a and the right seat cushion side plate 10b simultaneously drive the left front upper link 70a and the right front upper link 70b. The actions of the left front upper link 70a and right front upper link 70b in turn drive the left front lower link 40a and the right front lower link 40b. ; In addition, the left rear link 80a drives the rear tube 30 to move, and the rear tube 30 synchronously drives the right rear link 80b to move, thereby realizing the height adjustment of the seat cushion.

During the height adjustment process of the seat cushion, the angle changes of the left rear link 80a and the right rear link 80b drive the left front lower link 40a and the right front lower link 40b to be linked, so that the front and rear ends of the seat cushion can be height adjusted simultaneously to maintain the seat cushion angle. Basically unchanged, typically, the change in seat cushion angle, that is, the change in the angle of the left and right seat cushion side panels, may not exceed 1°. At this time, since the right front lower link 40b and the right rear link 80b are linked, the zero-gravity motor assembly will not be pulled. That is to say, in this embodiment, the links of the five-link mechanism are linked during the seat cushion height adjustment process, rather than the links of the four-link mechanism, so that the front end of the seat cushion and the height of the seat cushion can be adjusted. The height of the rear end is adjusted at the same time, basically keeping the seat angle unchanged. At this time, since the left front lower link 40a and the right front lower link 40b will rotate counterclockwise synchronously (the hinge point E between the right rear link 80b and the right rear bracket 62b in the right slide rail assembly 60b is located at the zero gravity motor assembly 90 (above the hinge point F between the end of the zero-gravity threaded pipe 93 and the right rear link 80b), so that the angle α value increases, so it can compensate for the difference in the first four-link mode (as shown in Figure 7, AD = BC, CD>AB) and in the second four-link mode (as shown in Figure 7, AD<BC), the angle α value decreases during the movement, which at least partially offsets the decrease in the angle α value, making the cushion angle Basically remains the same.

When the seat starts to adjust from the initial position to the zero-gravity position, the zero-gravity threaded pipe 93 is driven to move by the zero-gravity motor 91 and the zero-gravity screw 92. The movement of the zero-gravity threaded pipe 93 pulls the right rear link 80b around it and the right The hinge point of the right rear bracket 62b in the slide rail assembly 60b moves, and the right rear link 80b moves while pulling the rear tube 30 to move.

When the zero-gravity motor 91 and the zero-gravity screw 92 drive the zero-gravity threaded pipe 93 to move, the zero-gravity motor 91 drives the right front lower link 40b to move around the hinge point between it and the right front bracket 61b in the right slide rail assembly 60b. , the movement of the right front lower link 40b drives the movement of the right front upper link 70b; at the same time, the movement of the rear tube 30 drives the left rear link 80a to move around its hinge point with the left rear bracket 62a in the left slide rail assembly 60a. The movement of the rear link 80a drives the front tube 20 to move in synchronization with the movement of the right front upper link 70b through the high-profile motor assembly 100 (at this time, the high-profile motor assembly 100 is not working and is equivalent to a connecting rod). The front end of the seat cushion is adjusted so that the seat cushion moves from the initial position to the zero-gravity position.

Example 2

Referring to Figures 8 to 9, in view of the fact that the zero-gravity motor assembly 90 does not work when the seat cushion is height-adjusted according to Embodiment 1, a connecting rod 90a can be used to replace the zero-gravity motor assembly 90 in Embodiment 1. This embodiment is used in seats without zero gravity function. One end of the connecting rod 90a is hinged to the right front lower link 40b, and the other end of the connecting rod 90a is hinged to the right rear connecting rod 80b. The seat cushion height adjustment method of this embodiment can be referred to Embodiment 1.

Example 3

Referring to Figures 10 to 13, this embodiment is directed to the hinge point E between the right rear link 80b and the right rear bracket 62b in the right slide rail assembly 60b and the end of the zero gravity threaded tube 93 in the zero gravity motor assembly 90 The case where the hinge point F is coaxial with the right rear link 80b in the Y direction.

The seat cushion height adjustment method of this embodiment can be referred to Embodiment 1, in which when adjusting the seat cushion height, the angle α value can remain basically unchanged, which is suitable for the third four-bar linkage method (as shown in Figure 13, AD =BC, CD=AB, the angle α value of the four-bar linkage mechanism remains unchanged during the movement), and the seat cushion angle remains unchanged.

When the seat starts to adjust from the initial position to the zero-gravity position, the zero-gravity threaded pipe 93 is driven to move by the zero-gravity motor 91 and the zero-gravity screw 92 .

When the zero-gravity motor 91 and the zero-gravity screw 92 drive the zero-gravity threaded pipe 93 to move, the zero-gravity motor 91 drives the right front lower link 40b to move around the hinge point between it and the right front bracket 61b in the right slide rail assembly 60b. , the movement of the right front lower link 40b drives the movement of the right front upper link 70b; at the same time, through the synchronization rod, the left front lower link and the right front lower link move synchronously, and the left front upper link and the right front upper link move synchronously to realize the front end of the seat cushion Adjust so that the seat cushion moves from the initial position to the zero gravity position.

Example 4

Referring to Figures 14 to 17, this embodiment is directed to the hinge point E between the right rear link 80b and the right rear bracket 62b in the right slide rail assembly 60b being located at the end of the zero gravity threaded tube 93 in the zero gravity motor assembly 90 and Below hinge point F between right rear link 80b.

The seat cushion height adjustment method of this embodiment is basically the same as that of Embodiment 1. When the seat cushion height is adjusted, the left front lower link 40a and the right front lower link 40b will rotate clockwise (the hinge point E between the right rear link 80b and the right rear bracket 62b in the right slide rail assembly 60b is located at the zero gravity motor (below the hinge point F between the end of the zero-gravity threaded pipe 93 in the assembly 90 and the right rear link 80b), so that the α value is reduced, which can make up for the difference in the fourth four-link mode (as shown in Figure 17 (shown in Figure 17, AD=BC, CD<AB) and in the fifth four-link mode (shown in Figure 17, AD>BC), the increase in the angle α value during the movement at least partially offsets the increase in the angle α value. Large, the seat cushion angle remains basically unchanged.

When the seat starts to adjust from the initial position to the zero-gravity position, the zero-gravity threaded pipe 93 is driven to move by the zero-gravity motor 91 and the zero-gravity screw 92. The movement of the zero-gravity threaded pipe 93 pulls the right rear link 80b around it and the right The hinge point of the right rear bracket 62b in the slide rail assembly 60b moves, and the movement of the right rear link 80b pulls the rear tube 30 to move.

Example 5

Referring to Figures 18 and 19, in view of the fact that the zero-gravity motor assembly 90 does not work when the seat cushion is height-adjusted in Embodiment 4, a connecting rod 90a can be used to replace the zero-gravity motor assembly 90 in Embodiment 4. This can be Embodiments are used in seats without zero gravity functionality. One end of the connecting rod 90a is hinged to the right front lower link 40b, and the other end is hinged to the right rear link 80b.

It should be noted that the terms used herein are for the purpose of describing specific aspects only and are not intended to limit the disclosure. As used herein, the singular forms "a," "an" and "the one" shall include the plural forms unless the context clearly dictates otherwise. It will be understood that the terms "comprising" and "includes" and other similar terms, when used in the application documents, specify the presence of stated operations, elements and/or components without excluding one or more other operations, elements. , components and/or combinations thereof. As used herein, the term "and/or" includes all and any combinations of one or more of the associated listed items. In the description of the drawings, similar reference numbers always identify similar elements.

The thicknesses of elements in the drawings may be exaggerated for clarity. Additionally, it will be understood that if an element is referred to as being on, coupled to, or connected to another element, it can be directly formed on, coupled to, or connected to the other element. connected to it, or there can be one or more intervening elements between them. In contrast, if the expressions "directly on," "directly coupled to," and "directly connected to" are used herein, it is intended that there are no intervening elements. Other words used to describe the relationship between elements should be interpreted similarly, such as "between" versus "directly between," "attached" versus "directly attached," "adjacent" versus " Directly adjacent" and so on.

It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. Thus, a first element could be termed a second element without departing from the teachings of the inventive concept.

It is also conceivable that all exemplary embodiments disclosed here can be combined with one another as desired.

Finally, it should be pointed out that the above embodiments are only used to understand the present invention and do not limit the scope of the present invention. For those skilled in the art, modifications can be made on the basis of the above embodiments without departing from the scope of the present invention.

Claims

A cushion adjustment mechanism, which includes:

Left cushion side panel and right cushion side panel;

A front tube, the left end of the front tube is fixedly connected to the front side of the left seat cushion side panel, and the right end of the front tube is fixedly connected to the front side of the right seat cushion side panel;

A rear tube, the left end of the rear tube is hinged to the rear side of the left seat cushion side panel, and the right end of the rear tube is hinged to the rear side of the right seat cushion side panel;

A left rear link and a right rear link, the upper end of the left rear link is fixedly connected to the left end of the rear tube, and the upper end of the right rear link is fixedly connected to the right end of the rear tube;

The upper left front link and the right front upper link, the upper end of the left front upper link is hinged with the front side of the left seat cushion side panel, and the upper end of the right front upper link is hinged with the front side of the right seat cushion side panel;

It is characterized in that the cushion adjustment mechanism also includes:

A left front lower link, a right front lower link, a synchronizer rod and a high-profile motor assembly;

The lower end of the left front upper link is hinged to the left front lower link, and the lower end of the right front upper link is hinged to the right front lower link;

The left end of the synchronization rod is fixedly connected to the left front lower link, and the right end of the synchronization rod is fixedly connected to the right front lower link;

One end of the high-profile motor assembly is hinged to the front tube, and the other end of the high-profile motor assembly is hinged to one of the left rear link and the right rear link.
The seat cushion adjustment mechanism according to claim 1, wherein the high-profile motor component is configured to drive the left rear link, the right rear link, and the left rear link when adjusting the seat height. The left front lower link, right front lower link, left front upper link, right front upper link, and left and right seat cushion side plates move to realize the linkage of each link of the five-link mechanism.
The seat cushion adjustment mechanism according to claim 2, wherein the seat cushion adjustment mechanism is configured such that when the seat cushion height is adjusted, during the height adjustment process, the change in the angle of the seat cushion is related to the change in the left front lower link and the right front lower link. It is reduced compared to when the connecting rod is locked.
The seat cushion adjustment mechanism according to claim 2, wherein the seat cushion adjustment mechanism is configured such that when the seat cushion height is adjusted, during the height adjustment process, the change in angle of the seat cushion is ≤3°, especially ≤2°. , especially ≤1°.
The seat cushion adjustment mechanism according to any one of claims 1 to 4, wherein the other end of the high-profile motor assembly is hingedly connected to the left rear link.
The seat cushion adjustment mechanism according to any one of claims 1 to 5, characterized in that the seat cushion adjustment mechanism further includes a structural component that connects the left rear link and the right rear link. The other is coupled with the front lower link on the same side.
The seat cushion adjustment mechanism of claim 6, wherein one end of the structural component is hinged to the front lower link, and the other end of the structural component is hinged to the other rear link.
The seat cushion adjustment mechanism according to any one of claims 1 to 7, wherein the high-profile motor assembly includes: a high-profile motor, a high-profile screw driven by the high-profile motor, and a high-profile screw driven by the high-profile screw. High-profile threaded pipe; the high-profile motor serves as one end of the high-profile motor component and is hinged with the front tube; the end of the high-profile threaded tube serves as the other end of the high-profile motor component and is hinged with the one rear link; when adjusting the seat cushion height , the high-profile motor drives the high-profile threaded pipe to perform telescopic movement through a high-profile screw.
The seat cushion adjustment mechanism according to claim 8, wherein the high-profile motor assembly further includes a high-profile motor bracket, the high-profile motor bracket is fixedly connected to the front tube, and the high-profile motor is hinged on the high-profile motor. on the stand.
The seat cushion adjustment mechanism according to any one of claims 1 to 9, wherein the left front lower link and the right front lower link and the left rear link and the right rear link are respectively hinged with the base.
The seat cushion adjustment mechanism according to any one of claims 1 to 10, characterized in that the seat cushion adjustment mechanism further includes:

A slide rail assembly, which includes a left slide rail assembly and a right slide rail assembly;

Wherein, the left front lower link is hinged on the front end of the upper left slide rail in the left slide rail assembly, and the right front lower link is hinged on the front end of the upper right slide rail in the right slide rail assembly; The lower end of the left rear link is hinged on the rear side of the upper left slide rail in the left slide rail assembly, and the lower end of the right rear link is hinged on the rear side of the upper right slide rail in the right slide rail assembly.
The seat cushion adjustment mechanism according to any one of claims 1 to 11, characterized in that the seat cushion adjustment mechanism further includes: a zero-gravity motor assembly, one end of the zero-gravity motor assembly is hinged on the right front lower connection On the rod, the other end of the zero-gravity motor assembly is hingedly connected to the right rear link, wherein the zero-gravity motor assembly is configured to drive the seat cushion toward the zero-gravity position when performing zero-gravity adjustment of the seat cushion. adjustment; and during the height adjustment process of the seat cushion, the left rear link and the right rear link rotate, the right rear link rotates through the zero-gravity motor assembly to drive the right front lower link to rotate, and the right front lower link rotates through The synchronizer rod drives the left front lower link to rotate.
The seat cushion adjustment mechanism according to claim 12, wherein the zero-gravity motor assembly includes: a zero-gravity motor, a zero-gravity screw driven by the zero-gravity motor, and a zero-gravity screw driven by the zero-gravity screw. Gravity threaded pipe; the zero-gravity motor is hinged on the right front lower link, and the end of the zero-gravity threaded pipe is hinged with the right rear link; when adjusting the seat cushion in zero gravity, the zero-gravity motor passes The zero-gravity screw drives the zero-gravity threaded tube to perform telescopic movement, thereby driving the seat cushion to adjust to the zero-gravity position.
The seat cushion adjustment mechanism according to claim 12 or 13, characterized in that:

The hinge point between the lower end of the right rear link and the base is located above the hinge point between the other end of the zero-gravity motor assembly and the right rear link; or

The hinge point between the lower end of the right rear link and the base is located below the hinge point between the other end of the zero-gravity motor assembly and the right rear link; or

The hinge point between the lower end of the right rear link and the base and the hinge point between the other end of the zero-gravity motor assembly and the right rear link are coaxial in the Y direction.
The seat cushion adjustment mechanism according to claim 13, characterized in that:

The rear hinge point of the upper right slide rail in the right rear link and right slide rail assembly is located above the hinge point of the end of the zero-gravity threaded tube and the right rear link; or

The rear hinge point of the upper right slide rail in the right rear link and right slide rail assembly is located below the hinge point of the end of the zero-gravity threaded tube and the right rear link; or

The rear hinge point of the right rear link and the upper right slide rail in the right slide rail assembly and the hinge point of the end of the zero-gravity threaded tube and the right rear upper link are coaxial in the Y direction.
The seat cushion adjustment mechanism according to any one of claims 13 to 15, wherein the zero-gravity motor assembly is located inside the right slide rail assembly and adjacent to the right slide rail assembly, and the The zero-gravity motor is located at the upper inner side of the right slide rail assembly.
The seat cushion adjustment mechanism according to any one of claims 1 to 16, wherein the high-profile motor assembly is located inside the left slide rail assembly and adjacent to the left slide rail assembly.
The seat cushion adjustment mechanism according to claim 6 or 7, wherein the structural component is a connecting rod, one end of the connecting rod is hinged to the right front lower connecting rod, and the other end of the connecting rod is connected to the right front lower connecting rod. The right rear link is hinged; wherein, during the height adjustment process of the seat cushion, the left rear link and the right rear link rotate, and the rotation of the right rear link drives the right front lower link to rotate through the structural component, And the rotation of the right front lower link drives the left front lower link to rotate through the synchronization rod.
The seat cushion adjustment mechanism according to any one of claims 1 to 18, wherein the front tube is directly and fixedly connected to the left seat cushion side panel and the right seat cushion side panel respectively, and the rear tube is directly connected to the right seat cushion side panel. The left rear link and the right rear link are directly and fixedly connected respectively, and the synchronization rod is directly and fixedly connected with the left front lower link and the right front lower link respectively.
A seat comprising the cushion adjustment mechanism according to any one of claims 1 to 19.