Zero-gravity seat with seat frame capable of independently moving forwards

Abstract

The utility model discloses a zero-gravity seat with a seat frame capable of independently moving forwards, which comprises a support component used for being assembled on an automobile slide rail assembly, the seat frame is arranged above the support component, a backrest is rotatably mounted at the rear end of the support component, and the rear end of the seat frame can rotate relative to the support component and can also slide back and forth relative to the support component. An upper linkage component is hinged to the front end of the seat frame, a lower linkage component is hinged to the front end of the support assembly, and the end of the upper linkage component is hinged to the end of the lower linkage component. An electric driving mechanism and a driving device are arranged on the support assembly, the electric driving mechanism is used for driving the lower linkage component to rotate, and the driving device is used for driving the rear end of the seat frame to slide back and forth relative to the support assembly. The zero-gravity seat cushion has the beneficial effects that the seat cushion has an independent forward moving function and a zero-gravity function at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle seats, and in particular to a zero-gravity seat with an independently forward-movable seat frame. Background Art

[0002] Vehicle seats are one of the important components of a vehicle, and they can provide a comfortable and safe seating position for the driver and passengers. With the expansion of the vehicle market, both vehicle manufacturers and consumer terminals have put forward more stringent requirements for the comfort of vehicle seats.

[0003] Currently, the backs of some front-row seats on the market have a function of tilting forward. When the backrest tilts forward, it can increase the activity space for the rear passengers, enabling the passengers to support their legs on the backrest of the front-row seat when resting. In the existing seat structure, the backrest of the front-row seat is usually rotatably installed at the rear end of the seat cushion frame. When the backrest rotates forward, the seat cushion remains stationary relative to the backrest, and the backrest is restricted by the interference of the seat cushion and cannot be tilted forward flat at a large angle, resulting in limited activity space for the rear passengers and the legs of the passengers not being able to obtain more comfortable support. To solve the above technical problems, some seats adopt a separated setting of the seat cushion and the backrest, and the seat cushion is moved forward separately to create a folding space under the backrest, so that the backrest can be tilted forward flat at a large angle.

[0004] However, for mid- to high-end vehicles, to meet the comfort requirements of the front-row occupants, the front-row seats usually have a zero-gravity function, that is, the backrest is rotatably installed at the rear end of the seat frame, and when the backrest tilts backward, the front end of the seat frame can also be lifted upward. In the zero-gravity mode, the user can lie on the seat in a very comfortable posture. In this way, it is difficult for the seat to also take into account the zero-gravity function on the basis of endowing the seat cushion with an independently forward-movable function. Summary of the Utility Model

[0005] In view of this, the utility model provides a zero-gravity seat with an independently forward-movable seat frame, aiming to overcome the technical problem that the independently forward-movable function of the seat cushion and the zero-gravity function in a vehicle seat cannot be compatible.

[0006] To achieve the above object, the technical solution of the utility model is as follows:

[0007] A zero-gravity seat with an independently forward-movable seat frame includes a bracket assembly for being assembled to a vehicle slide rail assembly. A seat frame is arranged above the bracket assembly, and a backrest is rotatably installed at the rear end of the bracket assembly. The feature is that the rear end of the seat frame can both rotate relative to the bracket assembly and slide forward and backward relative to the bracket assembly;

[0008] An upper linkage member is hinged to the front end of the seat frame, and a lower linkage member is hinged to the front end of the bracket assembly. The ends of the upper linkage member and the lower linkage member are hinged to each other;

[0009] The bracket assembly is provided with an electric drive mechanism and a drive device, wherein the electric drive mechanism is used to drive the lower linkage component to rotate, and the drive device is used to drive the rear end of the seat frame to slide forward and backward relative to the bracket assembly;

[0010] When the driving device is in the closed state, the electric driving mechanism drives the lower linkage component to rotate, and can force the rear end of the seat frame to rotate under the transmission action of the upper linkage component;

[0011] When the electric drive mechanism is in a closed state, the drive device drives the rear end of the seat frame to slide forward and backward, forcing the upper linkage component to rotate with the lower linkage component as a fulcrum to realize the forward and backward movement of the seat frame.

[0012] With the above structure, when the zero gravity function is used, the electric drive mechanism drives the lower linkage component to rotate, and the front end of the lower linkage component moves upward to drive the rear end of the upper linkage component to lift upward, thereby driving the front end of the seat frame to rotate upward with the rear end as a fulcrum, thereby realizing the zero gravity function of the seat. When the backrest needs to be flattened forward, the drive device drives the rear end of the seat frame to slide forward relative to the bracket assembly. During the process of the rear end of the seat frame sliding forward, since the upper linkage component and the lower linkage component are hinged to each other, the lower linkage component remains fixed under the control of the electric drive mechanism. Therefore, the upper linkage component can rotate forward around the hinge point with the lower linkage component, thereby driving the front end of the seat frame to move forward.

[0013] Preferably, a slide rail assembly is also included, the bracket assembly includes a transition frame fixedly mounted on the upper rail of the slide rail assembly, an adapter plate extending upward is provided at the rear end of the transition frame, and the lower end of the backrest is rotatably mounted on the adapter plate.

[0014] Preferably: the rear portion of the transition frame is provided with a slide groove extending along its length direction, the rear end of the seat frame is rotatably supported in the slide groove by a pin shaft, and the pin shaft can slide back and forth along the slide groove; the driving device is used to drive the pin shaft to slide back and forth in the slide groove, so as to drive the rear end of the seat frame to move back and forth relative to the transition frame.

[0015] Preferably, the driving device comprises a motor, a screw driven to rotate by the motor, and a nut sleeve threadedly mounted on the screw shaft, the base of the motor is rotatably connected to the front end of the transition frame, a connecting component is fixed to the nut sleeve, and the end of the connecting component away from the nut sleeve is rotatably connected to the pin shaft.

[0016] Preferably, a transfer plate extending downward is fixedly disposed at the rear end of the seat frame, and the pin is installed at the lower end of the transfer plate.

[0017] Preferably, the slide rail assembly includes two groups of upper rails arranged in parallel and symmetrically. A cross beam is fixedly supported between the two groups of upper rails. There are two groups of transition frames, which are respectively fixed on the two groups of upper rails. A first support rod is horizontally arranged between the fronts of the two groups of transition frames. The base of the motor is rotationally connected to the first support rod through an adapter.

[0018] Preferably, the number of the pin shafts and the adapter plates is two groups respectively and they are in one-to-one correspondence. The two adapter plates are respectively arranged on both sides of the rear end of the seat frame. A first synchronizing rod is connected between the two pin shafts. The end of the connecting component away from the nut sleeve is connected to the first synchronizing rod.

[0019] Preferably, the number of the upper linkage components and the lower linkage components is two groups respectively and they are in one-to-one correspondence. The two upper linkage components and the lower linkage components are located on both sides of the front end of the seat frame. The two lower linkage components are synchronously connected through a third synchronizing rod.

[0020] Preferably, the transition frame is in a plate-like structure and is shaped to gradually become higher from the front end to the rear end in its length direction.

[0021] Preferably, the chute is inclined, and the height of its front end is lower than that of the rear end.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] 1. The zero-gravity seat with an independently forward-movable seat frame provided by the present utility model forms a four-bar linkage mechanism among the upper linkage component, the lower linkage component, the bracket assembly and the seat frame. When using the zero-gravity function, the electric drive mechanism drives the lower linkage component to rotate. The front end of the lower linkage component moves upward, driving the rear end of the upper linkage component to lift upward, thereby driving the front part of the seat frame to rotate upward, realizing the zero-gravity function of the seat and improving the comfort of the front row occupants.

[0024] 2. When the backrest needs to be reclined forward, the driving device drives the rear end of the seat frame to slide forward relative to the bracket assembly. During the forward sliding of the rear end of the seat frame, since the upper linkage component and the lower linkage component are hinged to each other and the lower linkage component is fixed under the control of the electric drive mechanism, the upper linkage component can rotate forward around its hinge point with the lower linkage component, thereby driving the front end of the seat frame to move forward, that is, the whole seat frame moves forward relative to the bracket assembly, further eliminating the space interference under the backrest and providing space for the forward folding of the backrest to meet the comfort of the foot support of the rear row occupants.

[0025] 3. Since the seat frame and the backrest are designed separately, when the backrest is fixed, the linkage components can be driven by the electric drive mechanism to rotate, which can drive the front part of the seat frame to rotate upward, so as to achieve the purpose of independently adjusting the inclination angle of the seat cushion, meet the multi-functional adjustment requirements of the occupant for the seat, and further improve the comfort of the user when sitting. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of a zero-gravity seat;

[0027] Figure 2 It is a side view of the zero-gravity seat;

[0028] Figure 3 It is a side view of the zero-gravity seat in the zero-gravity state;

[0029] Figure 4 It is a schematic internal structure diagram of the zero-gravity seat in the zero-gravity state;

[0030] Figure 5 It is a side view of the zero-gravity seat when the backrest 7 is tilted forward;

[0031] Figure 6 It is a schematic internal structure diagram of the zero-gravity seat when the backrest 7 is tilted forward;

[0032] Figure 7 It is a schematic diagram showing the connection relationship of the slide rail assembly A, the bracket assembly 1, the upper linkage component 3, the lower linkage component 4 and the drive device 6;

[0033] Figure 8 It is a schematic diagram showing the connection relationship of the slide rail assembly A, the bracket assembly 1 and the drive device 6. Detailed Embodiment

[0034] The present invention will be further described below in conjunction with the embodiments and the drawings.

[0035] In this embodiment, the directions of "front", "rear", "upper", "lower", "left" and "right" mentioned refer to the directions in the normal use state of the vehicle seat.

[0036] As Figure 1 shown, a zero-gravity seat with an independently movable forward seat frame includes a slide rail assembly A for being assembled to the vehicle floor. A bracket assembly 1 is provided on the slide rail assembly A. A seat frame 2 is provided above the bracket assembly 1. A backrest 7 is rotatably installed at the rear end of the bracket assembly 1. A drive mechanism capable of driving the backrest to rotate forward or backward is provided on the backrest 7. The drive mechanism for driving the seat backrest to rotate forward and backward can adopt an electric regulator, which is a prior art and will not be elaborated here. The rear end of the seat frame 2 can not only rotate relative to the bracket assembly 1 but also slide forward and backward relative to the bracket assembly 1. Further, as Figure 2And 3 As shown, between the front end of the seat frame 2 and the bracket assembly 1, there are an upper linkage member 3 and a lower linkage member 4 with hinged ends. One end of the upper linkage member 3 is hinged to the front end of the seat frame 2, the other end is hinged to the lower linkage member 4, and the end of the lower linkage member 4 away from the upper linkage member 3 is hinged to the front end of the bracket assembly 1.

[0037] Combined with Figure 4 And 5 It can be seen that an electric drive mechanism 5 and a driving device 6 are provided on the bracket assembly 1. Among them, the electric drive mechanism 5 is used to drive the lower linkage member 4 to rotate, and the driving device 6 is used to drive the rear end of the seat frame 2 to slide back and forth relative to the bracket assembly 1. In the closed state of the driving device 6, when the electric drive mechanism 5 drives the lower linkage member 4 to rotate, under the transmission action of the upper linkage member 3, it can force the rear end of the seat frame 2 to rotate, so that the front end of the seat frame 2 is lifted upward. In the closed state of the electric drive mechanism 5, when the driving device 6 drives the rear end of the seat frame 2 to slide back and forth, it can force the upper linkage member 3 to rotate with the lower linkage member 4 as the fulcrum, so as to realize the front and back movement of the seat frame 2.

[0038] Based on the above structural design, since the upper linkage member 3 is hinged to the front end of the seat frame 2, the upper linkage member 3 and the lower linkage member 4 are hinged to each other, the lower linkage member 4 is hinged to the bracket assembly 1, and the rear end of the seat frame 2 is rotatably connected to the bracket assembly 1. Therefore, a four-bar linkage mechanism is formed among the upper linkage member 3, the lower linkage member 4, the bracket assembly 1 and the seat frame 2. When using the zero-gravity function, the electric drive mechanism 5 drives the lower linkage member 4 to rotate. The front end of the lower linkage member 4 moves upward, driving the rear end of the upper linkage member 3 to lift upward, thereby driving the front end of the seat frame 2 to rotate upward with the rear end as the fulcrum, realizing the zero-gravity function of the seat and improving the comfort of the front-row occupants. When the backrest 7 needs to be reclined forward, the driving device 6 drives the rear end of the seat frame 2 to slide forward relative to the bracket assembly 1. During the forward sliding of the rear end of the seat frame 2, since the upper linkage member 3 and the lower linkage member 4 are hinged to each other and the lower linkage member 4 is fixed under the control of the electric drive mechanism 5, the upper linkage member 3 can rotate forward around its hinge point with the lower linkage member 4, thereby driving the front end of the seat frame 2 to move forward, that is, the whole seat frame 2 moves forward relative to the bracket assembly 1, further eliminating the space interference under the backrest 7 and providing space for the backrest 7 to fold forward to meet the comfort of the rear-row occupants' foot support.

[0039] Since the seat frame 2 and the backrest 7 are designed in a split manner, when the backrest 7 is fixed, the electric drive mechanism 5 drives the lower linkage member 4 to rotate, which can drive the front part of the seat frame 2 to rotate upward, thereby achieving the purpose of separately adjusting the seat cushion inclination angle, meeting the multi-functional adjustment requirements of the occupants for the seat, and further improving the comfort of the user.

[0040] Furthermore, for another example Figure 2As shown, the bracket assembly 1 includes a transition frame 1a fixedly installed on the slide rail assembly A. A connecting plate 1b extending upward is fixedly provided at the rear end of the transition frame 1a, and the lower end of the backrest 7 is rotatably assembled on the connecting plate 1b.

[0041] It can be seen from Figure 4 and 5 that a chute a extending along the length direction of the transition frame 1a is provided at the rear part of the transition frame 1a. The rear end of the seat frame 2 is rotatably supported on the chute a through a pin shaft b, and the pin shaft b can slide back and forth along the chute a. The chute a has a guiding function, and the driving device 6 can drive the pin shaft b to slide back and forth in the chute a to drive the rear end of the seat frame 2 to move back and forth relative to the transition frame 1a, thereby driving the whole seat frame 2 to move forward.

[0042] Please refer to Figure 4 and 6 . The driving device 6 includes a motor 61, a lead screw 62 driven by the motor 61 to rotate, and a nut sleeve 63 threadedly sleeved on the lead screw 62. The base of the motor 61 is rotatably connected to the front end of the transition frame 1a. The lead screw 62 extends backward along the length direction of the transition frame 1a. A connecting member 64 is fixedly provided on the nut sleeve 63, and one end of the connecting member 64 away from the nut sleeve 63 is rotatably connected to the pin shaft b. When the motor 61 drives the nut sleeve 63 to move forward along the lead screw 62, it can drive the rear end of the seat frame 2 to move forward along the chute a under the traction of the connecting member 64.

[0043] Refer to Figure 4 and 6 again. To ensure the reliability of the assembly of the whole structure, a connecting piece 10 extending downward is fixedly provided at the rear end of the seat frame 2, and the pin shaft b is installed at the lower end of the connecting piece 10. When the driving device 6 drives the pin shaft b to slide forward, it can drive the connecting piece 10 and the rear end of the seat frame 2 to move forward.

[0044] As Figure 7 shown, the slide rail assembly A includes two groups of lower rails A2 arranged in parallel and symmetrically. The two groups of lower rails A2 are used for fixed installation on the vehicle floor. Two groups of upper rails A1 are slidably assembled on the two groups of lower rails A2. Combining Figure 8 shown, a cross beam A3 is fixedly supported between the two groups of upper rails A1 to ensure the synchronism of the forward and backward sliding of the two groups of upper rails A1. The number of the transition frames 1a is two groups, and the two groups of transition frames 1a are respectively fixedly provided on the two groups of upper rails A1. A first support rod 8 is horizontally arranged between the front parts of the two groups of transition frames 1a. The driving device 6 is arranged between the two groups of transition frames 1a. Among them, the base of the motor 61 is rotatably connected to the first support rod 8 through an adapter c. Specifically, the front end of the adapter c is fixedly clamped with the first support rod 8, and the rear end is rotatably connected to the base of the motor 61. To ensure the stability of the structure of the bracket assembly 1, a second support rod 13 is horizontally arranged between the rear parts of the two groups of transition frames 1a.

[0045] Furthermore, asFigure 7 As shown, there are two sets of upper linkage components 3 and lower linkage components 4 respectively, and they correspond one by one. The two sets of upper linkage components 3 and lower linkage components 4 are located on both sides of the front end of the seat frame 2. The two sets of lower linkage components 4 are synchronously connected by a third synchronizing rod 12. When the electric drive mechanism 5 works, it can drive the two sets of lower linkage components 4 to rotate synchronously.

[0046] For another example Figure 1 and 4 As shown, the number of pin shafts b and adapter plates 10 are both two sets, and they correspond one by one. The two sets of adapter plates 10 are respectively arranged on both sides of the rear end of the seat frame 2. Combining Figure 8 As shown, a first synchronizing rod 9 is connected between the two sets of pin shafts b. One end of the connecting component 64 away from the nut sleeve 63 is connected to the first synchronizing rod 9. A second synchronizing rod 11 is connected between the ends of the two sets of adapter plates 10 away from the pin shafts b. The motor 61 drives the nut sleeve 63 to move linearly along the lead screw 62, driving the connecting component 64 and the first synchronizing rod 9 to move, that is, it can drive the pin shafts b at both ends of the first synchronizing rod 9 to slide back and forth along the chute a.

[0047] Please refer to Figure 2 and Figure 8 , in this embodiment, the transition frame 1a is a plate-like structure. In its length direction, the transition frame 1a is configured to be gradually higher from the front end to the rear end, that is, the height of the rear end of the transition frame 1a is higher than that of the front end. With such a design, the rear end of the seat frame 2 is connected to the rear end of the transition frame 1a, which can leave an installation space for the upper linkage components 3 and lower linkage components 4 in the front part. The lower end of the transition frame 1a has a bent portion 1a1, and this bent portion 1a1 is fixedly installed on the corresponding upper rail A1.

[0048] Refer to Figure 6 and 8 again, the chute a is inclined, and the height of its front end is lower than that of the rear end. When the seat is in the sitting state, the pin shaft b is located at the rearmost end of the chute a (refer to Figure 4 ). During the process of the driving device 6 driving the rear end of the seat frame 2 to move forward, under the guidance of the chute a, the pin shaft b slides from the rearmost end to the foremost end (refer to Figure 5 ), that is, it can drive the seat frame 2 to move downward and forward simultaneously. Such a movement trajectory can further increase the folding space below the backrest 7 to ensure that the backrest 7 can be folded forward flat.

[0049] Finally, it should be noted that the above description is only the preferred embodiment of the present invention. Under the inspiration of the present invention, those of ordinary skill in the art can make various similar representations without violating the purpose and claims of the present invention. Such transformations all fall within the protection scope of the present invention.

Claims

1. A zero-gravity seat with an independently forward-movable seat frame, comprising a bracket assembly (1) for being assembled to an automotive slide rail assembly (A), a seat frame (2) is arranged above the bracket assembly (1), and a backrest (7) is rotatably installed at the rear end of the bracket assembly (1), characterized in that: The rear end of the seat frame (2) can not only rotate relative to the support assembly (1), but also slide back and forth relative to the support assembly (1). The front end of the seat frame (2) is hinged with an upper linkage member (3), and the front end of the support assembly (1) is hinged with a lower linkage member (4). The ends of the upper linkage member (3) and the lower linkage member (4) are hinged to each other. An electric drive mechanism (5) and a drive device (6) are provided on the support assembly (1). Among them, the electric drive mechanism (5) is used to drive the lower linkage member (4) to rotate, and the drive device (6) is used to drive the rear end of the seat frame (2) to slide back and forth relative to the support assembly (1). In the closed state of the drive device (6), when the electric drive mechanism (5) drives the lower linkage member (4) to rotate, it can force the rear end of the seat frame to rotate under the transmission action of the upper linkage member (3). In the closed state of the electric drive mechanism (5), when the drive device (6) drives the rear end of the seat frame (2) to slide back and forth, it can force the upper linkage member (3) to rotate with the lower linkage member (4) as the fulcrum to realize the forward and backward movement of the seat frame (2).

2. The zero-gravity seat with an independently forward-movable seat frame according to claim 1, wherein: It further includes a slide rail assembly (A). The support assembly (1) includes a transition frame (1a) fixedly installed on the upper rail of the slide rail assembly (A). A transfer plate (1b) extending upward is provided at the rear end of the transition frame (1a). The lower end of the backrest (7) is rotatably assembled on the transfer plate (1b).

3. The zero-gravity seat with an independently forward-movable seat frame according to claim 2, characterized in that: A chute (a) extending along its length direction is provided at the rear part of the transition frame (1a). The rear end of the seat frame (2) is rotatably supported in the chute (a) by a pin shaft (b), and the pin shaft (b) can slide back and forth along the chute (a). The drive device (6) is used to drive the pin shaft (b) to slide back and forth in the chute (a) to drive the rear end of the seat frame (2) to move back and forth relative to the transition frame (1a).

4. The zero-gravity seat with an independently forward-movable seat frame according to claim 3, wherein: The drive device (6) includes a motor (61), a lead screw (62) driven to rotate by the motor (61), and a nut sleeve (63) threadedly sleeved on the lead screw (62). The base of the motor (61) is rotatably connected to the front end of the transition frame (1a). A connecting member (64) is fixedly provided on the nut sleeve (63), and one end of the connecting member (64) away from the nut sleeve (63) is rotatably connected to the pin shaft (b).

5. The zero-gravity seat with an independently forward-movable seat frame according to claim 4, wherein: A transfer piece (10) extending downward is fixedly provided at the rear end of the seat frame (2), and the pin shaft (b) is installed at the lower end of the transfer piece (10).

6. The zero-gravity seat with an independently forward-movable seat frame according to claim 5, wherein: The slide rail assembly (A) includes two groups of upper rails (A1) arranged in parallel and symmetrically. A cross beam (A3) is fixedly supported between the two groups of upper rails (A1). The number of the transition frames (1a) is two groups, and the two groups of transition frames (1a) are respectively fixedly provided on the two groups of upper rails (A1). A first support rod (8) is horizontally arranged between the front parts of the two groups of transition frames (1a). The base of the motor (61) is rotatably connected to the first support rod (8) through a transfer piece (c).

7. The zero-gravity seat with an independently forward-movable seat frame according to claim 6, wherein: The number of the pin shafts (b) and the adapter plates (10) is two groups respectively, and they are in one-to-one correspondence. The two groups of adapter plates (10) are respectively arranged on both sides of the rear end of the seat frame (2). A first synchronizing rod (9) is connected between the two groups of pin shafts (b). One end of the connecting member (64) away from the nut sleeve (63) is connected to the first synchronizing rod (9).

8. The zero-gravity seat with an independently forward-movable seat frame according to claim 6, characterized in that: The number of the upper linkage member (3) and the lower linkage member (4) is two groups respectively, and they are in one-to-one correspondence. The two groups of upper linkage members (3) and lower linkage members (4) are located on both sides of the front end of the seat frame (2). The two groups of lower linkage members (4) are synchronously connected through a third synchronizing rod (12).

9. The zero-gravity seat with an independently forward-movable seat frame according to claim 3, characterized in that: The transition frame (1a) is a plate-like structure, and in its length direction, it is set to be in a shape that gradually becomes higher from the front end to the rear end.

10. The zero-gravity seat with an independently forward-movable seat frame according to claim 9, characterized in that: The chute (a) is inclined, and the height of its front end is lower than that of the rear end.

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