Zero-gravity seat with seat frame independent forward moving function

Abstract

The zero-gravity seat with the seat frame independent forward moving function comprises a support assembly used for being assembled to an automobile sliding rail assembly, a seat frame is arranged above the support assembly, a backrest is rotationally installed at the rear end of the support assembly, and the rear end of the seat frame can rotate relative to the support assembly and can slide front and back relative to the support assembly; 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 can have the independent forward moving function and the zero-gravity function at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a zero-gravity seat with a seat frame independent forward movement function. Background Art

[0002] Car seats are one of the most important parts of cars, which can provide comfortable and safe riding positions for drivers and passengers. With the expansion of the automobile market, both automobile manufacturers and consumer terminals have put forward more stringent requirements on the comfort of car seats.

[0003] At present, some front-row seat backrests on the market have a forward-tilting function. The forward-tilting backrest can increase the activity space for rear-row passengers, allowing passengers to support their legs on the front-row seat backrest when resting. In existing seat structures, the backrest of the front-row seat is usually rotatably mounted on the rear end of the seat cushion frame. When the backrest rotates forward, the seat cushion is stationary relative to the backrest. The backrest is restricted by the interference of the seat cushion and cannot be tilted forward at a large angle, resulting in limited activity space for rear-row passengers and the passengers' legs cannot get more comfortable support. In order to solve the above technical problems, some seats use a separate setting of the seat cushion and the backrest, and the folding space under the backrest is freed up by moving the seat cushion forward alone, so that the backrest can be tilted forward at a large angle.

[0004] However, for mid- to high-end cars, in order to meet the comfort of the front seat passengers, the front seats usually have a zero-gravity function, that is, the backrest is rotated and installed at the rear end of the seat frame, and when the backrest is tilted backward, the front end of the seat frame can also be lifted up. In zero-gravity mode, the user can lie on the seat in a very comfortable posture. In this way, on the basis of giving the seat cushion a separate forward movement function, it is difficult for the seat to take into account the zero-gravity function. Summary of the invention

[0005] In view of this, the present invention provides a zero-gravity seat with an independent forward movement function of a seat frame, aiming to overcome the technical difficulty that the independent forward movement function of a seat cushion in a car seat is incompatible with the zero-gravity function.

[0006] To achieve the above purpose, the technical solution of the present invention is as follows:

[0007] A zero-gravity seat with a seat frame independent forward movement function, comprising a bracket assembly for assembly to a vehicle slide rail assembly, a seat frame is arranged above the bracket assembly, a backrest is rotatably mounted at the rear end of the bracket assembly, and the seat frame rear end can be rotated relative to the bracket assembly and can slide forward and backward relative to the bracket assembly;

[0008] The front end of the seat frame is hinged with an upper linkage component, the front end of the bracket assembly is hinged with a lower linkage component, and the ends of the upper linkage component and the lower linkage component 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 comprises two groups of upper rails arranged in parallel and symmetrically, a crossbeam is fixedly supported between the two groups of upper rails, there are two groups of transition frames, the two groups of transition frames are respectively fixed on the two groups of upper rails, a first support rod is horizontally placed between the front parts of the two groups of transition frames, and the base of the motor is rotatably connected to the first support rod through an adapter.

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

[0019] Preferably, the upper linkage components and the lower linkage components are provided in two groups in one-to-one correspondence, the two groups of upper linkage components and the lower linkage components are located at both sides of the front end of the seat frame, and the two groups of the lower linkage components are synchronously connected via a third synchronization rod.

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

[0021] Preferably, the slide groove is inclined, and the height of the front end is lower than the height of the rear end.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The zero-gravity seat with the independent forward movement function of the seat frame provided by the present invention forms a four-bar linkage mechanism among the upper linkage component, the lower linkage component, the bracket assembly and the seat frame. 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 part of the seat frame to rotate upward, thereby realizing the zero-gravity function of the seat and improving the riding comfort of the front passengers.

[0024] 2. When the backrest needs to be flattened forward, the driving device drives the rear end of the seat frame to slide forward relative to the bracket assembly. During the forward sliding process of the rear end of the seat frame, 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, that is, the seat frame as a whole moves forward relative to the bracket assembly, thereby eliminating the spatial interference under the backrest and providing space for the backrest to fold forward to meet the comfort of the rear occupants' foot support.

[0025] 3. Since the seat frame and the backrest adopt a split design, when the backrest is fixed, the electric drive mechanism drives the lower linkage component to rotate, which can drive the front part of the seat frame to rotate upward, so as to achieve the purpose of adjusting the inclination of the seat cushion separately, meeting the passengers' needs for multi-functional adjustment of the seat and further improving the user's riding comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a zero-gravity chair;

[0027] Figure 2 This is a side view of the zero gravity chair;

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

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

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

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

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

[0033] Figure 8 It is a schematic diagram showing the connection relationship between the slide rail assembly A, the bracket assembly 1 and the driving device 6. DETAILED DESCRIPTION

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

[0035] The directions "front", "back", "up", "down", "left" and "right" mentioned in this embodiment are based on the directions of the car seat in normal use.

[0036] like Figure 1 As shown, a zero-gravity seat with an independent forward movement function of the seat frame includes a slide rail assembly A for assembly to the floor of the car, 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 mounted at the rear end of the bracket assembly 1, and a driving mechanism capable of driving the backrest 7 to rotate forward or backward is provided on the backrest 7. The driving mechanism for driving the seat back to rotate forward and backward can adopt an electric adjuster, which is a prior art and will not be described in detail here. The rear end of the seat frame 2 can both rotate relative to the bracket assembly 1 and slide forward and backward relative to the bracket assembly 1. Further, as Figure 2and 3 As shown, an upper linkage component 3 and a lower linkage component 4 whose ends are hinged to each other are provided between the front end of the seat frame 2 and the bracket assembly 1. One end of the upper linkage component 3 is hinged to the front end of the seat frame 2, and the other end is hinged to the lower linkage component 4. The end of the lower linkage component 4 away from the upper linkage component 3 is hinged to the front end of the bracket assembly 1.

[0037] Recombination Figure 4 and 5 It can be seen that the support assembly 1 is provided with an electric drive mechanism 5 and a drive device 6, wherein the electric drive mechanism 5 is used to drive the lower linkage component 4 to rotate, and the drive device 6 is used to drive the rear end of the seat frame 2 to slide forward and backward relative to the support assembly 1. When the drive device 6 is closed, the electric drive mechanism 5 drives the lower linkage component 4 to rotate, and can force the rear end of the seat frame 2 to rotate under the transmission action of the upper linkage component 3, so that the front end of the seat frame 2 is lifted upward. When the electric drive mechanism 5 is closed, the drive device 6 drives the rear end of the seat frame 2 to slide forward and backward, and can force the upper linkage component 3 to rotate with the lower linkage component 4 as a fulcrum, so as to realize the forward and backward movement of the seat frame 2.

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

[0039] Since the seat frame 2 and the backrest 7 adopt a split design, when the backrest 7 is fixed, the electric drive mechanism 5 drives the lower linkage component 4 to rotate, which can drive the front part of the seat frame 2 to rotate upward, thereby achieving the purpose of independently adjusting the inclination angle of the seat cushion, meeting the occupant's demand for multi-functional adjustment of the seat, and further improving the user's riding comfort.

[0040] Furthermore, Figure 2As shown, the bracket assembly 1 includes a transition frame 1a fixedly mounted on the slide rail assembly A, and an adapter plate 1b extending upward is fixedly disposed at the rear end of the transition frame 1a, and the lower end of the backrest 7 is rotatably mounted on the adapter plate 1b.

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

[0042] Please refer to Figure 4 and 6 The driving device 6 includes a motor 61, a screw rod 62 driven to rotate by the motor 61, and a nut sleeve 63 threadedly mounted on the screw rod 62. The motor 61 is rotatably connected to the front end of the transition frame 1a, the screw rod 62 extends backward along the length direction of the transition frame 1a, and a connecting component 64 is fixed on the nut sleeve 63. The end of the connecting component 64 away from the nut sleeve 63 is rotatably connected to the pin shaft b. The motor 61 drives the nut sleeve 63 to move forward along the screw rod 62, and can drive the rear end of the seat frame 2 to move forward along the slide groove a under the traction of the connecting component 64.

[0043] Re-attend Figure 4 and 6 To ensure the reliability of the entire structural assembly, a downward extending adapter plate 10 is fixed to the rear end of the seat frame 2, and a pin shaft b is installed at the lower end of the adapter plate 10. The driving device 6 drives the pin shaft b to slide forward, which can drive the adapter plate 10 and the rear end of the seat frame 2 to move forward.

[0044] like Figure 7 As shown, the slide rail assembly A includes two sets of lower rails A2 arranged in parallel and symmetrically, the two sets of lower rails A2 are used to be fixedly installed on the vehicle floor, and two sets of upper rails A1 are mounted on the two sets of lower rails A2 so as to slide forward and backward. Figure 8 As shown, a crossbeam A3 is fixedly supported between the two groups of upper rails A1 to ensure the synchronization of the forward and backward sliding of the two groups of upper rails A1. There are two groups of transition frames 1a, and the two groups of transition frames 1a are respectively fixed on the two groups of upper rails A1. A first support rod 8 is horizontally placed between the front parts of the two groups of transition frames 1a, and a driving device 6 is arranged between the two groups of transition frames 1a, wherein 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 engaged with the first support rod 8, and the rear end is rotatably connected to the base of the motor 61. In order to ensure the stability of the structure of the bracket assembly 1, a second support rod 13 is horizontally placed between the rear parts of the two groups of transition frames 1a.

[0045] Further, such as Figure 7 As shown, there are two groups of upper linkage components 3 and lower linkage components 4, which correspond one to one. The two groups 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 groups of lower linkage components 4 are synchronously connected through the third synchronization rod 12. The electric drive mechanism 5 can drive the two groups of lower linkage components 4 to rotate synchronously when it works.

[0046] For example Figure 1 and 4 As shown, the number of the pin shaft b and the adapter plate 10 are both two groups, and they correspond one to one. The two groups of adapter plates 10 are respectively arranged on both sides of the rear end of the seat frame 2. Figure 8 As shown, the first synchronization rod 9 is connected between the two groups of pin shafts b, the end of the connecting component 64 away from the nut sleeve 63 is connected to the first synchronization rod 9, and the second synchronization rod 11 is connected between the ends of the two groups of adapter plates 10 away from the pin shaft b. The motor 61 drives the nut sleeve 63 to move linearly along the screw rod 62, driving the connecting component 64 and the first synchronization rod 9 to move, that is, it can drive the pin shafts b at both ends of the first synchronization rod 9 to slide forward and backward along the slide groove 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 constructed 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 the front end. With this design, the rear end of the seat frame 2 is connected to the rear end of the transition frame 1a, which can leave installation space for the upper linkage component 3 and the lower linkage component 4 at the front. The lower end of the transition frame 1a has a bent portion 1a1, which is fixedly installed on the corresponding upper rail A1.

[0048] Re-attend Figure 6 and 8 , the slide a is tilted, and its front end height is lower than the rear end height. When the seat is in the sitting position, the pin b is located at the rear end of the slide a (refer to Figure 4 ), when the driving device 6 drives the rear end of the seat frame 2 to move forward, the pin shaft b slides from the rear end to the front end under the guidance of the slide groove a (refer to Figure 5 ), that is, it is possible to drive the seat frame 2 to move downward and forward at the same time. Such a motion trajectory can further increase the folding space below the backrest 7 to ensure that the backrest 7 can be flattened forward.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A zero-gravity seat with a seat frame independent forward movement function, comprising a bracket assembly (1) for assembly to a vehicle slide rail assembly (A), a seat frame (2) being arranged above the bracket assembly (1), a backrest (7) being rotatably mounted at the rear end of the bracket assembly (1), characterized in that: The rear end of the seat frame (2) can rotate relative to the bracket assembly (1) and can also slide forward and backward relative to the bracket assembly (1); The front end of the seat frame (2) is hingedly connected to an upper linkage component (3), the front end of the bracket assembly (1) is hingedly connected to a lower linkage component (4), and the ends of the upper linkage component (3) and the lower linkage component (4) are hingedly connected to each other; the bracket assembly (1) is provided with an electric drive mechanism (5) and a drive device (6), wherein the electric drive mechanism (5) is used to drive the lower linkage component (4) to rotate, and the drive device (6) is used to drive the rear end of the seat frame (2) to slide forward and backward relative to the bracket assembly (1); When the driving device (6) is in a closed state, the electric driving mechanism (5) drives the lower linkage component (4) to rotate, and can force the rear end of the seat frame to rotate under the transmission action of the upper linkage component (3); when the electric driving mechanism (5) is in a closed state, the driving device (6) drives the rear end of the seat frame (2) to slide forward and backward, and can force the upper linkage component (3) to rotate with the lower linkage component (4) as a fulcrum, so as to realize the forward and backward movement of the seat frame (2).

2. The zero-gravity chair with independent forward movement function of the seat frame according to claim 1, characterized in that: It also includes a slide rail assembly (A), wherein the bracket assembly (1) includes a transition frame (1a) fixedly mounted on the upper rail of the slide rail assembly (A), the rear end of the transition frame (1a) is provided with an adapter plate (1b) extending upward, and the lower end of the backrest (7) is rotatably mounted on the adapter plate (1b).

3. The zero-gravity chair with independent forward movement function of the seat frame according to claim 2, characterized in that: The transition frame (1a) is provided with a slide groove (a) extending along its length direction at the rear portion thereof, and the rear end of the seat frame (2) is rotatably supported in the slide groove (a) via a pin shaft (b), and the pin shaft (b) can slide forward and backward along the slide groove (a); the driving device (6) is used to drive the pin shaft (b) to slide forward and backward in the slide groove (a), so as to drive the rear end of the seat frame (2) to move forward and backward relative to the transition frame (1a).

4. The zero-gravity chair with independent forward movement function of the seat frame according to claim 3, characterized in that: The driving device (6) comprises a motor (61), a screw rod (62) driven to rotate by the motor (61), and a nut sleeve (63) threadedly sleeved on the screw rod (62); the base of the motor (61) is rotatably connected to the front end of the transition frame (1a); a connecting component (64) is fixedly provided on the nut sleeve (63); and one end of the connecting component (64) away from the nut sleeve (63) is rotatably connected to the pin shaft (b).

5. The zero-gravity chair with independent forward movement function of the seat frame according to claim 4, characterized in that: A transfer plate (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 plate (10).

6. The zero-gravity chair with independent forward movement function of the seat frame according to claim 5, characterized in that: The slide rail assembly (A) comprises two groups of upper rails (A1) arranged in parallel and symmetrically, a crossbeam (A3) is fixedly supported between the two groups of upper rails (A1), the number of the transition frames (1a) is two groups, the two groups of transition frames (1a) are respectively fixed 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), and the base of the motor (61) is rotatably connected to the first support rod (8) through an adapter (c).

7. The zero-gravity chair with independent forward movement function of the seat frame according to claim 6, characterized in that: The number of the pin shafts (b) and the adapter plates (10) are both two groups, and they correspond one to one. The two groups of adapter plates (10) are respectively arranged on both sides of the rear end of the seat frame (2). A first synchronization rod (9) is connected between the two groups of the pin shafts (b), and one end of the connecting component (64) away from the nut sleeve (63) is connected to the first synchronization rod (9).

8. The zero-gravity chair with independent forward movement of the seat frame according to claim 6, characterized in that: The upper linkage components (3) and the lower linkage components (4) are each provided with two groups, and correspond one to one. The two groups of upper linkage components (3) and lower linkage components (4) are located at both sides of the front end of the seat frame (2), and the two groups of lower linkage components (4) are synchronously connected via a third synchronization rod (12).

9. The zero-gravity chair with independent forward movement function of the seat frame according to claim 3, characterized in that: The transition frame (1a) is a plate-like structure, and in its length direction, is arranged in a shape that gradually becomes higher from the front end to the rear end.

10. The zero-gravity chair with independent forward movement of the seat frame according to claim 9, characterized in that: The slide groove (a) is arranged to be inclined, and the height of the front end is lower than the height of the rear end.

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