CN218892464U - Zero gravity vehicle seat and seat frame - Google Patents

Abstract

The utility model relates to a zero-gravity vehicle seat and a seat frame. The seat frame includes a base to be fixed on the vehicle floor, a seat frame positioned above the base, a front link pivotally connected at one end to the seat frame, and a reclining mechanism, which includes a reclining link and a drive The inclination driving mechanism for the rotation of the inclination adjustment mechanism, the other end of the front link is hinged with one end of the inclination adjustment link, and the other end of the inclination adjustment link is pivotally connected with the base, wherein the seat frame also includes a front synchronous lever. According to the utility model, the two ends of the front synchronizing rod are respectively fixedly connected to the pivot connection points of the inclination adjustment link and the base on the left and right sides of the seat frame. The zero-gravity vehicle seat includes the above-mentioned seat frame. The utility model can make the zero-gravity seat have more adjustability.

Description

Zero gravity vehicle seat and seat frame

technical field

The utility model relates to the field of vehicles. Specifically, in a first aspect, the present invention relates to a seat frame for a zero-gravity vehicle seat. In a second aspect, the present invention relates to a zero-gravity vehicle seat comprising the seat frame.

Background technique

Traditional vehicle seats are generally adjusted using a four-bar linkage (one on each side of the seat), which consists of a front link, a seat frame, a rear link and a base, where there are front and rear links. Two pivot points, the front link connects the two front pivot points, the rear link connects the two rear pivot points, and the lower pivot point is fixed to the base, the frame of the seat frame connects the upper pivot point.

This four-bar linkage mechanism enables height adjustment of the vehicle seat, as well as integrated reclining adjustment, where the seat frame can be tilted upward to a certain angle around a certain pivot point. However, the vehicle seat cannot realize a complete seat reclining function, and the comfort of the occupants cannot be guaranteed.

In recent years, zero-gravity seats have been more and more used in vehicles because of their advantages of ensuring the comfort of occupants to the greatest extent. Current zero-gravity seats usually use a five-link mechanism to adjust the inclination and height of the seat, so as to meet the requirements of the zero-gravity seat for adjusting the seat posture of the occupant.

CN113147532A discloses a seat frame adjustment structure of a zero-gravity vehicle seat, including a base, a seat frame, a front link, a rear link and an inclination adjustment link. Compared with a traditional four-bar linkage, it increases The inclination adjustment link constitutes a five-link mechanism to provide height adjustment and inclination adjustment of the seat, wherein one end of the front link is pivotally connected with the seat frame, the other end is pivotally connected with one end of the inclination adjustment link, and the inclination adjustment link The other end of the rod is pivotally connected to the base. Height adjustment and inclination adjustment are controlled by two rotating drive mechanisms, only one works at a time, and the other is in a self-locking state to switch between height adjustment and inclination adjustment. Each rotary driving mechanism includes an arc rack fixed on the base and a driving gear meshed with it, and the driving gear is arranged on the front and rear connecting rods. When the height is adjusted, the rotation drive mechanism arranged on the rear link works to drive the rear link to rotate (at this time the tilt adjustment link is locked, so the rear link, seat frame, front link and base form a four-link mechanism) to adjust the seat height. When performing reclining adjustment, the rotating drive mechanism arranged on the front connecting rod works to drive the reclining adjusting connecting rod to rotate around its pivot connection point with the base, so that the seat frame rotates around the rear upper pivot point (at this time, the rear The link locks so the seat frame cannot rotate about the rear lower pivot point), thereby adjusting the seat reclining angle.

CN214647735U also discloses a seat frame adjustment structure of a similar zero-gravity vehicle seat, including a base, a seat frame, a front link, a rear link and an inclination adjustment link. Compared with a traditional four-bar linkage, It also increases the tilt adjustment link to form a five-bar linkage mechanism to provide height adjustment and tilt adjustment of the seat, wherein one end of the front link is pivotally connected with the seat frame, and the other end is pivotally connected with one end of the tilt adjustment link , the other end of the inclination adjustment link is pivotally connected with the base. The height adjustment and inclination adjustment are also controlled by two rotary drive mechanisms, each of which includes an arc rack and a drive gear meshed with it, wherein for height adjustment, the arc rack is arranged on the rear link, and the drive gear is arranged on the On the frame of the seat frame, for inclination adjustment, the arc rack is arranged on the inclination adjustment connecting rod, and the driving gear is arranged on the base. When the height is adjusted, the rotating drive mechanism arranged at the rear of the seat works to drive the rear connecting rod to rotate (at this time, the tilt adjustment connecting rod is locked, so the rear connecting rod, seat frame, connecting rod or front connecting rod and the base constitute Four-bar linkage mechanism), thereby adjusting the height of the seat. When performing inclination adjustment, the rotating drive mechanism arranged at the front of the seat works to drive the inclination adjustment connecting rod to rotate around its pivot connection point with the base, so that the seat frame rotates around the rear lower pivot point (at this time, the rear The link locks so the seat frame cannot rotate about the rear upper pivot point), thereby adjusting the seat reclining angle.

In order to synchronize the movement of both sides of the seat, the front and rear parts of the seat are provided with synchronous rods respectively, and the two ends of the synchronous rods at the front are respectively fixedly connected to the pivot connection points of the front connecting rod and the inclination adjustment connecting rod, and the rear The two ends of the synchronous rod on the upper part are respectively fixedly connected to the pivot connection points of the rear link and the seat frame.

There remains a need for improved seat frame adjustment structures for zero-gravity vehicle seats.

Contents of the invention

The purpose of the utility model is to improve the existing zero-gravity vehicle seat. In one aspect, the utility model provides a seat frame for a vehicle zero-gravity seat. The seat frame includes a base to be fixed on the vehicle floor, a seat frame positioned above the base, a front link pivotally connected at one end to the seat frame, and a reclining mechanism, which includes a reclining link and a drive The inclination angle driving mechanism that the inclination adjustment mechanism rotates, the other end of the front link is hinged with one end of the inclination adjustment link, and the other end of the inclination adjustment link is pivotally connected with the base. The seat frame also includes a front synchronization lever to synchronize the reclining movement on both sides of the seat. According to the utility model, the two ends of the front synchronizing rod are respectively fixedly connected to the pivot connection points of the inclination adjustment link and the base on the left and right sides of the seat frame. With this arrangement, the front synchronization lever is closer to the base than in prior arrangements.

According to an embodiment, the inclination driving mechanism includes a driving motor, a driving gear connected to an output shaft of the motor, and a rack meshed with it. The rack is arranged on the base, and the motor and the driving gear are arranged on the inclination adjusting link.

According to another embodiment, the inclination driving mechanism includes a spindle motor and a lead screw engaged with an output end of the spindle motor. The main shaft motor is arranged on the inclination adjustment connecting rod, and one end of the leading screw is arranged on the base. The rotation of the output end of the spindle motor causes it to move along the lead screw, driving the inclination adjustment link to rotate around its pivot point with the base. With this arrangement, it is no longer necessary to provide a drive gear and a rack.

According to an embodiment, the reclining link can be switched between a locked state and an activated state. In the locked state, the reclining link is in a horizontal position substantially in line with the base. In an activated state, the reclining link can pivot around it and the base. Turn the pivot point for tilt adjustment.

According to an embodiment, the seat frame further includes a height adjustment mechanism, which includes a height adjustment link and a height drive mechanism, one end of the height adjustment link is pivotally connected to the rear side of the base, and the other end is pivotally connected to the rear side of the seat frame. On the side, the height driving mechanism drives the height adjustment connecting rod to rotate. With this arrangement, height adjustment of the seat is achieved.

According to an embodiment, the height driving mechanism includes a driving motor, a driving gear connected to the output shaft of the motor and a rack meshed with it. The rack is arranged on the height adjustment link, the motor and the drive gear are arranged on the frame of the seat frame, or the rack is arranged on the base, and the motor and the drive gear are arranged on the height adjustment link. With the former arrangement, the seat frame is allowed to rotate around the pivotal connection point between the height adjustment link and the base (i.e., the rear lower pivot point) when the inclination is adjusted. With the latter arrangement, the seat frame is allowed to rotate around the pivot connection point between the height adjustment link and the seat frame (ie, the rear upper pivot point) when the inclination is adjusted.

According to another embodiment, the height driving mechanism includes a spindle motor and a lead screw engaged with an output end of the spindle motor. The main shaft motor is arranged on the height adjustment link, and one end of the leading screw is arranged on the base, or the main shaft motor is arranged on the front side of the frame of the seat frame, and one end of the leading screw is arranged on the rear side of the base. The rotation of the output end of the main shaft motor causes it to move along the lead screw, driving the height adjustment link to rotate around its pivot connection point with the base. With this arrangement, it is no longer necessary to provide a drive gear and a rack.

Preferably, both the left and right sides of the seat frame are provided with an inclination adjustment mechanism and/or a height adjustment mechanism. With this arrangement, the force borne by the adjustment mechanism can be dispersed, the stability of the adjustment mechanism can be improved, and a smaller drive motor or spindle motor can be selected to reduce the cost of the seat.

According to an embodiment, the base is a slide rail structure, and the seat frame can slide along the slide rail along with the inclination adjustment mechanism and the height adjustment mechanism, so as to realize the seat front and rear adjustment function.

In another aspect, the utility model provides a zero-gravity vehicle seat, which includes the above-mentioned seat frame.

The vehicle seat of the utility model also adopts an additional inclination adjustment link, which can form a five-bar linkage mechanism together with the front link, the seat frame, the rear link (ie the height adjustment link) and the base (each side of the seat Each has one), where there are two pivot points at the front and rear, the front link and the reclining link each connect a front pivot point, the rear link connects two rear pivot points, and the lower The pivot point is fixed to the base, and the frame of the seat frame is connected to the upper pivot point. Furthermore, the front link and the recliner link are articulated to each other. In the locked state, the five-bar linkage becomes a four-bar linkage because the reclining link is locked and roughly in line with the base, allowing height adjustment, while in the activated state, the seat adjusts as the reclining link rotates. The chair frame can be tilted, thereby adjusting the inclination.

It is also conceivable not to provide a height adjustment link, so that the seat frame is pivotally connected directly to the base at the rear side.

Compared with the current five-link mechanism, the structure of the utility model is improved, so that the zero-gravity seat vehicle can have more adjustability.

Description of drawings

Some embodiments of the invention will be explained in more detail in the accompanying drawings, in which:

Fig. 1A is a perspective view of the vehicle seat frame of the present invention, wherein the reclining adjustment link is in an activated upward tilting state;

Figure 1B is a perspective view of the vehicle seat frame of Figure 1A with parts removed for clarity;

Fig. 2A and Fig. 2B are respectively the perspective view of the vehicle seat frame adopting the reclining adjustment mechanism of single motor and dual motors according to the first embodiment of the present invention, wherein the reclining connecting rod is in the horizontal locking state;

2C and 2D are perspective views of the vehicle seat frame of FIGS. 2A and 2B , respectively, with the recliner link in an activated upward tilt state;

Fig. 3A and Fig. 3B are the perspective views of the vehicle seat frame adopting the reclining mechanism of the single motor and the double motor of the second embodiment of the present invention respectively, wherein the reclining connecting rod is in the horizontal locking state;

Fig. 3C is a partially enlarged perspective view of Fig. 3A;

Figure 3D is a perspective view of another angle of Figure 3A;

Fig. 4A and Fig. 4B are respectively the perspective views of the vehicle seat frame adopting the tilt adjustment mechanism of single motor and double motor according to the third embodiment of the present invention, wherein the tilt adjustment connecting rod is in the horizontal locking state;

Fig. 4C is a partially enlarged perspective view of Fig. 4A;

Figure 4D is a perspective view of another angle of Figure 4A;

Fig. 5A and Fig. 5B are respectively the perspective views of the vehicle seat frame adopting single-motor and double-motor reclining adjustment mechanisms according to the fourth embodiment of the present invention, wherein the reclining adjustment connecting rod is in the horizontal locking state;

Fig. 5C is a partially enlarged perspective view of Fig. 5A;

Figure 5D is a perspective view of another angle of Figure 5A;

Fig. 6A is a perspective view of the vehicle seat frame of the fifth embodiment of the present invention, wherein the reclining adjustment link is in a horizontally locked state;

6B and 6C are partial enlarged perspective views of FIG. 6A, respectively;

Figure 6D is a perspective view of Figure 6A, wherein the recliner link is in an activated upward tilt state;

Fig. 7A is a perspective view of the vehicle seat frame of the sixth embodiment of the present invention, wherein the reclining adjustment link is in a horizontally locked state;

7B and 7C are partial enlarged perspective views of FIG. 7A, respectively;

Figure 7D is a perspective view from another angle of Figure 7A;

Fig. 8A and Fig. 8B are the perspective views of the vehicle seat frame adopting single-motor and double-motor reclining mechanism according to the seventh embodiment of the present invention, wherein the reclining connecting rod is in the horizontal locking state;

Fig. 8C is a partially enlarged perspective view of Fig. 8A;

Figure 8D is a perspective view from another angle of Figure 8A;

Fig. 9A and Fig. 9B are the perspective views of the vehicle seat frame adopting single-motor and double-motor inclination adjustment mechanisms according to the eighth embodiment of the present invention, wherein the inclination adjustment connecting rod is in the horizontal locking state;

Fig. 9C is a partially enlarged perspective view of Fig. 9A;

FIG. 9D is a perspective view of FIG. 9A from another angle.

In the figures, embodiments of the invention are shown in a simplified manner for the sake of clarity. The drawings are not necessarily shown to scale. Like reference numerals in the figures indicate like parts.

Detailed ways

Embodiment of the utility model is described below with reference to accompanying drawing. For ease of description, directional terms are used below with reference to the orientation of the vehicle seat when installed in the vehicle.

Figures 1A and 1B illustrate the basic idea of the present invention. As shown in the figure, the seat frame 1 includes a base 10 to be fixed on the vehicle floor, a seat frame 20 above the base 10, a front link 30 pivotally connected to the seat frame 20 at one end, and a rear link 40 (i.e. height adjustment link) and inclination adjustment link 50, the other end of front link 30 is hinged with one end of inclination adjustment link 50, and the other end of inclination adjustment link 50 is pivotally connected with base 10, thus base 10, seat frame 20, the front link 30, the rear link 40 and the inclination adjustment link 50 form a five-bar linkage (the seat both sides respectively have one). In addition, the seat frame 1 also includes a rear cross bar 60 and a front synchronizing bar 70 to synchronize the movement of both sides of the seat. As shown in Figure 1B, the two ends of the front synchronizing rod 70 are respectively fixed at the two pivot connection points between the two reclining connecting rods 50 on the left and right sides of the seat frame 1 and the base 10, so that the reclining connecting rods 50 can Rotation about an axis R0 extending through the two pivotal connection points. The base 10 is a slide rail structure, so that the seat can also be adjusted forward and backward.

For height adjustment and inclination adjustment, the utility model conceives multiple ways to drive the inclination adjustment connecting rod 50 and the height adjustment connecting rod 40 to rotate.

2A-2D show a first embodiment of the present invention. The seat frame 100 includes a base 110 to be fixed to the vehicle floor, a seat frame 120 located above the base 110 , a front link 130 , a rear link 140 (ie, a height adjustment link) and an inclination adjustment link 150 . Base 110, seat frame 120, front link 130, rear link 140 and inclination adjustment link 150 constitute a five-bar linkage (there are one on both sides of the seat). In addition, the seat frame 100 also includes a rear cross bar 160 and a front synchronization bar 170 to synchronize the movement of both sides of the seat. As shown in Figure 2C, the two ends of the front synchronizing rod 170 are respectively fixed at the two pivot connection points between the two tilt adjustment links 150 on the left and right sides of the seat frame 100 and the base 110, so that the tilt adjustment links 150 can Rotation about an axis R10 extending through the two pivotal connection points.

In this example, the inclination driving mechanism includes a driving motor 180, a driving gear (not shown) connected to the output shaft of the motor and a rack (not shown) meshing with it, wherein the rack is arranged on the base 110, and the motor And drive gear are arranged on the inclination adjustment link 150. The height drive mechanism includes a drive motor 191, a drive gear (not shown) connected with the motor output shaft transmission and a rack (not shown) meshed with it, wherein the rack is arranged on the height adjustment link 140, the motor and the drive The gears are provided on the frame of the seat frame 110 . During reclining (when the height adjustment link 140 is locked), as the reclining link 150 rotates, the seat frame 110 pivots around two pivots that extend through the two height adjustment links 140 and are pivotally connected to the base 110. The axis R11 of the connection point (ie the rear lower pivot point) rotates. When the height is adjusted (at this time, the inclination adjustment link 150 is locked and is in a horizontal position, as shown in Figures 2A-2B), since the inclination adjustment link 150 is roughly in line with the base 110, the five-bar linkage mechanism becomes a four-link mechanism. lever mechanism for height adjustment.

2A and 2C show a seat frame 100 including a reclining mechanism using a single motor 180, and FIGS. 2B and 2D show a seat frame 100 including a reclining mechanism using dual motors 180, one on each side of the seat. The motor 180 drives the two inclination adjustment connecting rods 150 respectively. In the case of the single motor 180, the driving motor 180 and the driving motor 191 are respectively arranged on both sides of the seat, so as to facilitate load balancing.

3A-3D show a second embodiment of the present invention. The seat frame 200 includes a base 210 to be fixed to the vehicle floor, a seat frame 220 located above the base 210 , a front link 230 , a rear link 240 (ie, a height adjustment link) and an inclination adjustment link 250 . The base 210, the seat frame 220, the front link 230, the rear link 240 and the reclining link 250 form a five-link mechanism (one on each side of the seat). In addition, the seat frame 200 also includes a rear cross bar 260 and a front synchronization bar 270 to synchronize the movement of both sides of the seat. As shown in Figure 3C, the two ends of the front synchronizing rod 270 are respectively fixed at the two pivot connection points between the two tilt adjustment links 250 on the left and right sides of the seat frame 200 and the base 210, so that the tilt adjustment links 250 can Rotate about an axis extending through the two pivotal connection points (i.e. the axis of the synchronization lever 270).

In this example, the inclination driving mechanism includes a spindle motor 280 and a lead screw 290 engaged with the output end of the spindle motor 280 . The spindle motor 280 is arranged on the inclination adjusting link 250 , and one end of the lead screw 290 is arranged on the base 210 . The rotation of the output end of the spindle motor 280 causes it to move along the lead screw 290 , driving the inclination adjustment link 250 to rotate around its pivot point with the base 210 . The height drive mechanism includes a drive motor 291, a drive gear (not shown) connected with the motor output shaft transmission and a rack (not shown) meshed with it, wherein the rack is arranged on the height adjustment link 240, the motor and the drive The gears are provided on the frame of the seat frame 210 . During reclining (when the height adjustment link 240 is locked), as the reclining link 250 rotates, the seat frame 210 pivots around two pivots that extend through the two height adjustment links 240 and are pivotally connected to the base 210 . The axis R21 of the connection point (ie the rear lower pivot point) rotates. When the height is adjusted (at this time, the inclination adjustment link 250 is locked and is in a horizontal position, as shown in Figures 3A-3B), since the inclination adjustment link 250 is roughly in line with the base 210, the five-bar linkage mechanism becomes a four-link mechanism. lever mechanism for height adjustment.

Fig. 3 A shows and comprises the seat frame 200 of the inclination adjustment mechanism that adopts single motor 280, and Fig. 3 B shows the seat frame 200 that comprises the inclination adjustment mechanism that adopts double motor 280, and a motor 280 is respectively arranged on the left and right sides of the seat, drives two respectively. Root inclination adjustment connecting rod 250. In the case of a single motor 280, the spindle motor 280 and the drive motor 291 are respectively arranged on both sides of the seat for load balancing.

4A-4D show a third embodiment of the present invention. The seat frame 300 includes a base 310 to be fixed to the vehicle floor, a seat frame 320 above the base 310 , a front link 330 , a rear link 340 (ie, a height adjustment link) and an inclination adjustment link 350 . Base 310, seat frame 320, front connecting rod 330, rear connecting rod 340 and inclination adjustment connecting rod 350 constitute a five-bar linkage mechanism (respectively one on both sides of the seat). In addition, the seat frame 300 also includes a rear cross bar 360 and a front synchronization bar 370 to synchronize the movement of both sides of the seat. As shown in Figure 4C, the two ends of the front synchronizing rod 370 are respectively fixed at the two pivot connection points between the two tilt adjustment links 350 on the left and right sides of the seat frame 300 and the base 310, so that the tilt adjustment links 350 can Rotation about an axis extending through the two pivotal connection points (i.e. the axis of the synchronization lever 370).

In this example, the inclination driving mechanism includes a driving motor 380, a driving gear (not shown) connected to the output shaft of the motor and a rack 390 meshed with it, wherein the rack 390 is arranged on the base 310, and the motor and the driving gear It is arranged on the inclination adjustment link 350. The height driving mechanism includes a spindle motor 391 and a lead screw 392 engaged with the output end of the spindle motor 391 . The main shaft motor 391 is arranged on the height adjustment connecting rod 340, and one end of the leading screw 392 is arranged on the base 310. The rotation of the output end of the main shaft motor 391 causes it to move along the lead screw 392 , driving the height adjustment link 340 to rotate around its pivotal connection point with the base 310 . When the reclining is adjusted (the height adjusting link 340 is locked at this moment), along with the reclining adjusting link 350 rotates, the seat frame 310 extends around the two height adjusting links 340 that are pivotally connected with the seat frame 320. The axis R31 (ie the axis of the rear crossbar 360) of the pivot connection point (ie the rear upper pivot point) rotates. When the height is adjusted (at this time, the inclination adjustment link 350 is locked and is in a horizontal position, as shown in Figures 4A-4B), since the inclination adjustment link 350 is roughly in line with the base 310, the five-bar linkage mechanism becomes a four-link mechanism. Lever mechanism for height adjustment.

Fig. 4A shows the seat frame 300 comprising the reclining mechanism using a single motor 380, and Fig. 4B shows a seat frame 300 comprising a reclining mechanism adopting dual motors 380, and a motor 380 is respectively arranged on the left and right sides of the seat, driving two motors respectively. Root inclination adjustment connecting rod 350. In the case of a single motor 380, the driving motor 380 and the spindle motor 391 are respectively arranged on both sides of the seat, so as to facilitate load balancing.

5A-5D show a fourth embodiment of the present invention. The seat frame 400 includes a base 410 to be fixed to the vehicle floor, a seat frame 420 above the base 410 , a front link 430 , a rear link 440 (ie, a height adjustment link) and an inclination adjustment link 450 . Base 410, seat frame 420, front link 430, rear link 440 and inclination adjustment link 450 constitute a five-bar linkage (there are one on both sides of the seat). In addition, the seat frame 400 also includes a rear cross bar 460 and a front synchronization bar 470 to synchronize the movement of both sides of the seat. As shown in Figure 4C, the two ends of the front synchronizing rod 470 are respectively fixed at the two pivot connection points between the two reclining link 450 on the left and right sides of the seat frame 400 and the base 410, so that the reclining link 450 can Rotate about an axis extending through the two pivotal connection points (i.e. the axis of the synchronization lever 470).

In this example, the inclination driving mechanism includes a spindle motor 480 and a lead screw 490 engaged with the output end of the spindle motor 480 . The main shaft motor 480 is arranged on the inclination adjusting link 450 , and one end of the lead screw 490 is arranged on the base 410 . The rotation of the output end of the spindle motor 480 causes it to move along the lead screw 490 , driving the inclination adjustment link 450 to rotate around its pivot point with the base 410 . The height driving mechanism includes a spindle motor 491 and a lead screw 492 engaged with the output end of the spindle motor 491 . The main shaft motor 491 is arranged on the height adjustment connecting rod 440 , and one end of the lead screw 492 is arranged on the base 410 . The rotation of the output end of the main shaft motor 491 causes it to move along the leading screw 492, driving the height adjustment link 440 to rotate around its pivot connection point with the base 410. During inclination adjustment (at this time, the height adjustment link 440 is locked), along with the inclination adjustment link 450 rotation, the seat frame 410 extends around the two height adjustment links 440 that are pivotally connected with the seat frame 420. The axis R41 (ie the axis of the rear crossbar 460 ) of the pivot connection point (ie the rear upper pivot point) rotates. When the height is adjusted (at this time, the inclination adjustment link 450 is locked and is in a horizontal position, as shown in Figures 5A-5B), since the inclination adjustment link 450 is roughly in line with the base 410, the five-bar linkage mechanism becomes a four-link mechanism. Lever mechanism for height adjustment.

Figure 5A shows the seat frame 400 including the reclining mechanism using a single motor 480, and Figure 5B shows the seat frame 400 including the reclining mechanism using double motors 480, and a motor 480 is respectively arranged on the left and right sides of the seat to drive two motors respectively. Root inclination adjustment link 450. In the case of a single motor 480, the main shaft motor 480 and the main shaft motor 491 are respectively arranged on both sides of the seat to facilitate load balancing.

6A-6D show a fifth embodiment of the present invention. The seat frame 500 includes a base 510 to be fixed to the vehicle floor, a seat frame 520 above the base 510 , a front link 530 , a rear link 540 (ie a height adjustment link) and an inclination adjustment link 550 . Base 510, seat frame 520, front link 530, rear link 540 and inclination adjustment link 550 constitute a five-bar linkage (there are one on both sides of the seat). In addition, the seat frame 500 also includes a rear cross bar 560 and a front synchronization bar 570 to synchronize the movement of the two sides of the seat. As shown in Figure 5C, the two ends of the front synchronizing rod 570 are respectively fixed at the two pivot connection points between the two reclining link 550 on the left and right sides of the seat frame 500 and the base 510, so that the reclining link 550 can Rotate about an axis extending through the two pivotal connection points (i.e. the axis of the synchronization lever 570).

In this example, the inclination driving mechanism includes a driving motor 580, a driving gear (not shown) connected to the output shaft of the motor and a rack 590 meshing therewith, wherein the rack 590 is arranged on the base 510, and the motor and the driving gear It is arranged on the inclination adjustment link 550 . The height driving mechanism includes a spindle motor 591 and a lead screw 592 engaged with the output end of the spindle motor 591 . The spindle motor 591 is disposed on the front side of the frame of the seat frame 520 , and one end of the lead screw 592 is disposed on the rear side of the base 510 . The rotation of the output end of the main shaft motor 591 causes it to move along the leading screw 592, driving the height adjustment link 540 to rotate around its pivot connection point with the base 510. During reclining (when the height adjustment link 540 is locked), as the reclining link 550 rotates, the seat frame 510 pivots around two pivots that extend through the two height adjustment links 540 and are pivotally connected to the base 510. The axis R51 of the connection point (ie the rear lower pivot point) rotates. When the height is adjusted (at this time, the inclination adjustment link 550 is locked and is in a horizontal position, as shown in Figures 6A-6C), since the inclination adjustment link 550 is roughly in line with the base 510, the five-bar linkage mechanism becomes a four-link mechanism. Lever mechanism for height adjustment.

In this example, the drive motor 580 and the spindle motor 591 are respectively arranged on both sides of the seat, so as to facilitate load balancing.

7A-7D show a sixth embodiment of the present invention. The seat frame 600 includes a base 610 to be fixed to the vehicle floor, a seat frame 620 above the base 610 , a front link 630 , a rear link 640 (ie, a height adjustment link) and an inclination adjustment link 650 . Base 610, seat frame 620, front link 630, rear link 640 and inclination adjustment link 650 form a five-bar linkage (there are one on both sides of the seat). In addition, the seat frame 600 also includes a rear cross bar 660 and a front synchronization bar 670 to synchronize the movement of both sides of the seat. As shown in Figure 6C, the two ends of the front synchronizing rod 670 are respectively fixed at the two pivot connection points between the two tilt adjustment links 650 on the left and right sides of the seat frame 600 and the base 610, so that the tilt adjustment links 650 can Rotate about an axis extending through the two pivotal connection points (i.e. the axis of the synchronization lever 670).

In this example, the inclination driving mechanism includes a spindle motor 680 and a lead screw 690 engaged with the output end of the spindle motor 680 . The main shaft motor 680 is arranged on the inclination adjusting link 650 , and one end of the lead screw 690 is arranged on the base 610 . The rotation of the output end of the spindle motor 680 causes it to move along the lead screw 690 , driving the inclination adjustment link 650 to rotate around its pivot point with the base 610 . The height driving mechanism includes a spindle motor 691 and a lead screw 692 engaged with the output end of the spindle motor 591 . The main shaft motor 691 is arranged on the front side of the frame of the seat frame 620, and one end of the leading screw 692 is arranged on the rear side of the base 610. The rotation of the output end of the main shaft motor 691 causes it to move along the lead screw 692 , and drives the height adjustment link 640 to rotate around its pivot connection point with the base 610 . During reclining (when the height adjustment link 640 is locked), as the reclining link 650 rotates, the seat frame 610 pivots around two pivots that extend through the two height adjustment links 640 and are pivotally connected to the base 610. The axis R61 of the connection point (i.e. the rear lower pivot point) rotates. When the height is adjusted (at this time, the inclination adjustment link 650 is locked and is in a horizontal position, as shown in Figures 7A-7D), since the inclination adjustment link 650 and the base 610 are roughly in a straight line, the five-bar linkage mechanism becomes a four-link mechanism. lever mechanism for height adjustment.

In this example, the spindle motor 680 and the spindle motor 691 are respectively arranged on two sides of the seat, so as to facilitate load balancing.

8A-8D show a seventh embodiment of the present invention. The seat frame 700 includes a base 710 to be fixed to the vehicle floor, a seat frame 720 above the base 710 , a front link 730 , a rear link 740 (ie, a height adjustment link) and an inclination adjustment link 750 . Base 710, seat frame 720, front link 730, rear link 740 and inclination adjustment link 750 constitute a five-bar linkage (there are one on both sides of the seat). In addition, the seat frame 700 also includes a rear cross bar 760 and a front synchronization bar 770 to synchronize the movement of the two sides of the seat. As shown in Figure 7C, the two ends of the front synchronizing rod 770 are respectively fixed at the two pivot connection points between the two tilt adjustment links 750 on the left and right sides of the seat frame 700 and the base 710, so that the tilt adjustment links 750 can Rotate about an axis extending through the two pivotal connection points (i.e. the axis of the synchronization lever 770).

In this example, the inclination driving mechanism includes a driving motor 780, a driving gear (not shown) connected to the output shaft of the motor and a rack 790 meshed with it, wherein the rack 790 is arranged on the base 710, and the motor and the driving gear It is arranged on the inclination adjustment link 750. The height drive mechanism includes a drive motor 791, a drive gear (not shown) connected to the output shaft of the motor and a rack 792 meshed with it, wherein the rack 792 is arranged on the base 710, and the drive motor 791 and the drive gear are arranged at the height Adjust the connecting rod 740. During reclining (at this time the height adjustment link 740 is locked), as the reclining link 750 rotates, the seat frame 710 pivotally extends through the two height adjustment links 740 and is pivotally connected to the seat frame 720 . The axis R71 (ie, the axis of the rear crossbar 760 ) of the pivot connection point (ie, the rear upper pivot point) rotates. When the height is adjusted (at this time, the inclination adjustment link 750 is locked and is in a horizontal position, as shown in Figures 8A-8B), since the inclination adjustment link 750 is roughly in line with the base 710, the five-bar linkage mechanism becomes a four-link mechanism. lever mechanism for height adjustment.

Figure 8A shows a seat frame 100 comprising a reclining mechanism using a single motor 780, and Figure 8B shows a seat frame 700 comprising a reclining mechanism employing dual motors 780, one motor 780 is provided on each of the left and right sides of the seat to drive two motors respectively. Root inclination adjustment link 750. In the case of a single motor 780, the driving motor 780 and the driving motor 791 are respectively arranged on both sides of the seat to facilitate load balancing.

9A-9D show an eighth embodiment of the present invention. The seat frame 800 includes a base 810 to be fixed to the vehicle floor, a seat frame 820 above the base 210 , a front link 830 , a rear link 840 (ie, a height adjustment link) and an inclination adjustment link 850 . Base 810, seat frame 820, front link 830, rear link 840 and inclination adjustment link 850 form a five-bar linkage (there are one on both sides of the seat). In addition, the seat frame 800 also includes a rear cross bar 860 and a front synchronization bar 870 to synchronize the motion of the two sides of the seat. As shown in Figure 8C, the two ends of the front synchronizing rod 870 are respectively fixed at the two pivot connection points between the two reclining link 850 on the left and right sides of the seat frame 800 and the base 810, so that the reclining link 850 can Rotate about an axis extending through the two pivotal connection points (i.e. the axis of the synchronization lever 870).

In this example, the inclination driving mechanism includes a spindle motor 880 and a lead screw 890 engaged with the output end of the spindle motor 880 . The main shaft motor 880 is arranged on the inclination adjustment link 850 , and one end of the lead screw 890 is arranged on the base 810 . The rotation of the output end of the spindle motor 880 causes it to move along the lead screw 890 , driving the inclination adjustment link 850 to rotate around its pivot point with the base 810 . The height drive mechanism includes a drive motor 891, a drive gear (not shown) connected to the output shaft of the motor and a toothed rack 892 engaged therewith, wherein the rack 892 is arranged on the base 810, and the drive motor 891 and the drive gear are arranged at the height Adjust the connecting rod 840. When the reclining is adjusted (the height adjusting link 840 is locked at this moment), along with the reclining link 850 rotates, the seat frame 810 extends around the two height adjusting links 840 which are pivotally connected with the seat frame 820. The axis R81 (ie the axis of the rear crossbar 860) of the pivot connection point (ie the rear upper pivot point) rotates. When the height is adjusted (at this time, the inclination adjustment link 850 is locked and is in a horizontal position, as shown in Figures 9A-9B), since the inclination adjustment link 850 is roughly in line with the base 810, the five-bar linkage mechanism becomes a four-link mechanism. Lever mechanism for height adjustment.

Figure 9A shows a seat frame 800 including a reclining mechanism using a single motor 880, and Figure 9B shows a seat frame 800 including a reclining mechanism using a double motor 880, one motor 880 is provided on the left and right sides of the seat to drive two motors respectively. Root inclination adjustment connecting rod 850. In the case of a single motor 880, the spindle motor 880 and the drive motor 891 are respectively arranged on both sides of the seat for load balancing.

In some cases, features disclosed in this disclosure may be used independently of other features. On the other hand, the features disclosed in the present invention may be combined when necessary to provide various combinations.

The words and expressions used in the present invention are descriptive rather than restrictive, and the use of these words and expressions is not intended to exclude from the scope of the present invention any equivalents of the properties shown and described. Various modifications, variations and substitutions are possible within the scope of the claims. The claims are intended to cover all such equivalents.

Claims (12)

1. A seat frame, which includes a base to be fixed on the vehicle floor, a seat frame above the base, a front link pivotally connected at one end to the seat frame, and an inclination adjustment mechanism, the inclination adjustment The mechanism includes an inclination adjustment link and an inclination drive mechanism that drives the inclination adjustment mechanism to rotate. The other end of the front link is hinged to one end of the inclination adjustment link, and the other end of the inclination adjustment link is pivotally connected to the base. The seat frame also includes a front The front synchronous rod is characterized in that the two ends of the front synchronous rod are respectively fixedly connected to the pivotal connection points of the inclination adjustment link on both sides of the seat frame and the base. 2. The seat frame according to claim 1, wherein the inclination driving mechanism comprises a driving motor, a driving gear connected with the output shaft of the motor and a toothed rack meshed therewith, wherein the toothed rack is arranged on the base, and the motor and the drive gear are arranged on the inclination adjustment connecting rod. 3. The seat frame according to claim 1, wherein the inclination driving mechanism comprises a main shaft motor and a lead screw engaged with the output end of the main shaft motor, wherein the main shaft motor is arranged on the inclination adjustment connecting rod, and one end of the leading screw is arranged On the base, the rotation of the output end of the spindle motor causes it to move along the lead screw, driving the inclination adjustment link to rotate around its pivot point with the base. 4. The seat frame according to claim 1, wherein the reclining link is switched between a locked state and an activated state, and in the locked state, the reclining link is in a horizontal position, in line with the base, and in the activated state , the inclination adjustment link can rotate around its pivot connection point with the base. 5. The seat frame according to any one of claims 1-4, wherein the seat frame further comprises a height adjustment mechanism, which includes a height adjustment link and a height driving mechanism, wherein one end of the height adjustment link pivots The other end is pivotally connected to the rear side of the seat frame, and the height driving mechanism drives the height adjustment link to rotate. 6. The seat frame according to claim 5, wherein the height driving mechanism comprises a driving motor, a driving gear connected to the output shaft of the motor and a rack meshed with it, wherein the rack is arranged on the height adjustment link The motor and the driving gear are arranged on the frame of the seat frame, or the rack is arranged on the base, and the motor and the driving gear are arranged on the height adjustment link. 7. The seat frame according to claim 5, wherein the height driving mechanism comprises a main shaft motor and a lead screw engaged with the output end of the main shaft motor, wherein the main shaft motor is arranged on the height adjustment connecting rod, and one end of the lead screw is arranged On the base, the rotation of the output end of the spindle motor causes it to move along the lead screw, driving the height adjustment link to rotate around its pivotal connection point with the base, Or the main shaft motor is arranged on the front side of the frame of the seat frame, and one end of the leading screw is arranged on the rear side of the base, so that the output end of the main shaft motor rotates and causes it to move along the leading screw, driving the height adjustment connecting rod around it and the base The pivot connection point turns. 8. The seat frame according to any one of claims 1-4, characterized in that, the left and right sides of the seat frame are provided with inclination adjustment mechanisms. 9. The seat frame according to claim 5, characterized in that height adjustment mechanisms are provided on the left and right sides of the seat frame. 10. The seat frame according to claim 5, wherein the base is a slide rail structure, and the seat frame can slide along the slide rail along with the reclining adjustment mechanism and the height adjustment mechanism. 11. A seat frame according to any one of claims 1-4, characterized in that the seat frame is directly pivotally connected to the base at the rear side. 12. A zero-gravity vehicle seat, characterized in that it comprises the seat frame according to any one of claims 1-11.

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