Zero-gravity seat angle adjuster device and automobile seat

Abstract

The embodiment of the specification provides a zero-gravity seat angle adjuster device and an automobile seat. The zero-gravity seat comprises a backrest framework, a seat cushion framework and a seat framework. Vertical upward extending connecting plates are arranged on the left and right sides of one end of the seat framework at the rear of a vehicle. The seat cushion framework is pivotably fixed on the connecting plates through a second rotating shaft. The backrest framework is pivotably fixed on the seat cushion framework through a first rotating shaft. The connecting plates are provided with guide rails. The angle adjuster device comprises an angle adjuster shell and an angle adjuster rotating disc. The angle adjuster shell is mounted on the backrest framework. The angle adjuster rotating disc is arranged in the angle adjuster shell and coaxially arranged with the first rotating shaft. The angle adjuster rotating disc can rotate relative to the angle adjuster shell. The angle adjuster rotating disc comprises a connecting part extending to the outside of the angle adjuster shell. The connecting part is provided with a pin block inserted into the guide rail. When the angle of the backrest framework or the seat cushion framework is adjusted, the vehicle sensing device can always be kept horizontal, thereby ensuring the normal work of the vehicle sensing device.

Description

Technical Field

[0001] This specification relates to the field of automotive seat technology, specifically to a zero-gravity seat adjuster device and an automotive seat. Background Technology

[0002] The seatbelt retractor's vehicle sensing device detects the vehicle's acceleration and tilt angle, and activates the webbing lock in case of an emergency. Since the retractor is installed in the seat back, it tilts along with the seat back, requiring an adjustment wheel to synchronize the tilt angle of the vehicle sensing device with the seat back, keeping it as level as possible and ensuring proper functioning.

[0003] Currently, zero-gravity seats are increasingly used in vehicles. The key feature of zero-gravity seats is that both the seat cushion and backrest can be adjusted independently, and the tilt angle can be quite large. However, existing adjustment wheel mechanisms generally only work for changes in backrest angle and cannot handle seat tilt caused by seat cushion adjustments, leading to malfunctions in the vehicle sensing system. Summary of the Invention

[0004] To address the problems in the background art, this specification provides a zero-gravity seat angle adjuster device and a car seat, which can keep the vehicle sensing device horizontal at all times when the backrest frame or seat cushion frame is adjusted, thus ensuring the normal operation of the vehicle sensing device.

[0005] The embodiments in this specification provide the following technical solution: a zero-gravity seat adjuster device.

[0006] The zero-gravity seat includes a backrest frame, a seat cushion frame, and a seat frame. The seat frame has vertically extending connecting plates on the left and right sides of one end at the rear of the vehicle. The seat cushion frame is pivotally fixed to the connecting plates via a second pivot. The backrest frame is pivotally fixed to the seat cushion frame via a first pivot. The connecting plates are provided with guide rails.

[0007] The angle adjuster device includes an angle adjuster housing and an angle adjuster turntable. The angle adjuster housing is mounted on the backrest frame, and the angle adjuster turntable is disposed inside the angle adjuster housing and arranged coaxially with the first rotating shaft. The angle adjuster turntable can rotate relative to the angle adjuster housing. The angle adjuster turntable includes a connecting part that extends out of the angle adjuster housing, and a pin is provided on the connecting part that is inserted into the guide rail.

[0008] When the backrest frame or the seat cushion frame is adjusted, the angle adjuster housing rotates around the first pivot or the second pivot, and the guide rail limits and / or guides the pin block so that the angle between the extension direction of the connecting part and the seat frame along the front-rear direction of the vehicle body remains unchanged.

[0009] Preferably, the guide rail is an arc-shaped groove, which is disposed on the connecting plate between the first rotating shaft and the second rotating shaft. The radius of the circle containing the arc-shaped groove is equal to the distance between the first rotating shaft and the second rotating shaft, and the center of the circle containing the arc-shaped groove is located on the extension line of the first rotating shaft and the second rotating shaft.

[0010] Preferably, the pin is located at the intersection of the line connecting the axis of the first rotating shaft and the axis of the second rotating shaft and the arc-shaped groove.

[0011] Preferably, when the backrest frame is angled, the arc-shaped groove limits the pin block, so that the connecting part does not move relative to the seat frame.

[0012] Preferably, when the seat cushion frame is angled, the arc-shaped groove guides the pin block, causing the connecting part to translate relative to the seat frame.

[0013] Preferably, the portion of the angle adjuster turntable located inside the angle adjuster housing has a central through hole, and the axis of the central through hole coincides with the axis of the first rotating shaft.

[0014] Preferably, the turntable is sleeved on the outside of the first rotating shaft through the central through hole, and the turntable is rotatably connected to the first rotating shaft so that the turntable can rotate relative to the turntable housing.

[0015] Preferably, the angle adjuster housing has a notch, and when the angle adjuster turntable rotates relative to the angle adjuster housing, the connecting part moves within the notch.

[0016] Preferably, the guide rail is a linear slide rail, the pin block is slidably connected to the linear slide rail, and the connecting part is connected to the pin block by an elastic element. The elastic element is always in a stretched state so that the extension line of the connecting part is always perpendicular to the linear slide rail when the backrest frame or the seat cushion frame is adjusted.

[0017] An automotive seat includes a backrest frame, a seat cushion frame, and a seat frame. The backrest frame is angle-adjustable relative to the seat cushion frame via a first pivot, and the seat cushion frame is angle-adjustable relative to the seat frame via a second pivot. It also includes a retractor and an angle adjuster device as described above. The angle adjuster device is mounted on the backrest frame, and the connecting portion of the angle adjuster turntable is connected to the vehicle sensing device of the retractor via a core wire. When the backrest frame or the seat cushion frame is angle-adjusted, an angular momentum offset is generated between the angle adjuster turntable and the angle adjuster housing. This offset is transmitted from the angle adjuster turntable to the vehicle sensing device of the retractor via the core wire, thereby keeping the vehicle sensing device horizontal.

[0018] Preferably, the car seat further includes a seat rail, which is mounted on the vehicle body, and the seat frame can slide horizontally along the seat rail.

[0019] Compared with the prior art, the beneficial effects that at least one technical solution adopted in the embodiments of this specification can achieve include at least:

[0020] By setting an adjuster turntable that can rotate relative to the adjuster housing, when the backrest frame or seat cushion frame is adjusted, an angular momentum offset is generated between the adjuster turntable and the adjuster housing, so that the angle between the extension direction of the connecting part of the adjuster turntable and the seat frame along the front-rear direction of the vehicle body remains unchanged. The connecting part is transmitted to the vehicle sensing device of the retractor through the core wire, so that the vehicle sensing device remains horizontal. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the zero-gravity seat angle adjuster device provided by the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the zero-gravity seat adjuster device provided by the present invention;

[0024] Figure 3 This is a schematic diagram of the seat cushion frame of the zero-gravity seat adjuster device provided by the present invention during adjustment;

[0025] Figure 4 This is a schematic diagram of the backrest frame of the zero-gravity seat angle adjuster device provided by the present invention during adjustment;

[0026] Figure 5 This is a schematic diagram of the backrest frame of the zero-gravity seat angle adjuster device provided by the present invention during adjustment;

[0027] Figure 6 This is a schematic diagram of another embodiment of the zero-gravity seat angle adjuster device provided by the present invention.

[0028] Figure 7 This is a structural schematic diagram of the car seat provided by the present invention.

[0029] In the diagram, 1. Seat frame; 2. Seat cushion frame; 3. Backrest frame; 4. Second pivot; 5. First pivot; 6. Connecting plate; 7. Adjuster housing; 8. Adjuster turntable; 9. Connecting part; 10. Arc groove; 11. First circle; 12. Second circle; 13. Seat slide rail; 14. Elastic element; 15. Pin block; 16. Linear slide rail. Detailed Implementation

[0030] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0031] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0033] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0034] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0035] In existing technologies, it is generally necessary to install an angle adjustment wheel device on the car seat so that the tilt angle of the vehicle sensing device can be adjusted synchronously with the seat back to keep it as horizontal as possible and ensure that the vehicle sensing device can work properly. However, with the increasing application of zero-gravity seats in vehicles, the characteristics of zero-gravity seats are that both the seat cushion and the backrest can be adjusted independently, and the tilt angle can be large. Existing angle adjustment wheel devices are generally only suitable for changes in the backrest angle and cannot be used for seat tilt caused by seat cushion adjustment. When the seat cushion is adjusted, the vehicle sensing device is difficult to adjust with the seat cushion, and the vehicle sensing device cannot keep horizontal, resulting in the vehicle sensing device not working properly.

[0036] After extensive and in-depth testing, the inventors designed a zero-gravity seat angle adjuster device and a car seat that can keep the vehicle sensing device level at all times when the backrest frame or seat cushion frame is adjusted, thus ensuring the normal operation of the vehicle sensing device.

[0037] The technical problem solved by this invention is to address the issue that the vehicle sensing device cannot maintain a horizontal position during seat adjustment.

[0038] More specifically, the solution adopted by the present invention includes: by setting an adjuster turntable that can rotate relative to the adjuster housing, when the backrest frame or seat cushion frame is adjusted, an angular momentum offset is generated between the adjuster turntable and the adjuster housing, so that the angle between the extension direction of the connecting part of the adjuster turntable and the seat frame along the front-rear direction of the vehicle body remains unchanged, and the connecting part is transmitted to the vehicle sensing device of the retractor through the core wire so that the vehicle sensing device remains horizontal.

[0039] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0040] Example 1

[0041] like Figures 1-5 As shown, a zero-gravity seat adjuster device,

[0042] The zero-gravity seat includes a backrest frame 3, a seat cushion frame 2, and a seat frame 1. The seat frame 1 has vertically extending connecting plates 6 on both sides of its rear end. The seat cushion frame 2 is pivotally fixed to the connecting plates 6 via a second pivot 4. The seat cushion frame 2 is fixedly connected to the second pivot 4, and the second pivot 4 is rotatably connected to the connecting plate 6. Rotating the second pivot 4 causes the seat cushion frame 2 to rotate, allowing the seat cushion frame 2 to be angled relative to the seat frame 1. The backrest frame 3 is pivotally fixed to the seat cushion frame 2 via a first pivot 5. The backrest frame 3 is fixedly connected to the first pivot 5, and the first pivot 5 is rotatably connected to the seat cushion frame 2, allowing the backrest frame 3 to be angled relative to the seat cushion frame 2. The connecting plate 6 is equipped with guide rails.

[0043] The angle adjuster device includes an angle adjuster housing 7 and an angle adjuster turntable 8. The angle adjuster housing 7 is fixedly installed on the backrest frame 3. The angle adjuster turntable 8 is disposed inside the angle adjuster housing 7 and is coaxially arranged with the first rotating shaft 5. The angle adjuster turntable 8 is rotatably connected to the first rotating shaft 5. The angle adjuster turntable 8 can rotate relative to the angle adjuster housing 7. The angle adjuster turntable 8 includes a connecting part 9 extending outside the angle adjuster housing 7. A pin is provided on the connecting part 9 and inserted into the guide rail. The pin is disposed on the end face of the connecting part 9 near the connecting plate 6. The pin can move along the guide rail.

[0044] When the backrest frame 3 or the seat cushion frame 2 is adjusted, the angle adjuster housing 7 rotates around the first rotating shaft 5 or the second rotating shaft 4, and the guide rail limits and / or guides the pin block. When the backrest frame 3 is adjusted, the first rotating shaft 5 drives the backrest frame 3 to rotate, and the angle adjuster housing 7 rotates together with the backrest frame 3. The guide rail limits the pin block, so that the angle adjuster turntable 8 does not move. When the seat cushion frame 2 is adjusted, the second rotating shaft 4 drives the seat cushion frame 2 to rotate, and the backrest frame 3 rotates together with the seat cushion frame 2. The pin block slides along the guide rail, causing the connecting part 9 to translate relative to the seat frame 1, thereby generating an angular momentum offset between the angle adjuster turntable 8 and the angle adjuster housing 7, so that the angle between the extension direction of the connecting part 9 and the seat frame 1 along the front-rear direction of the vehicle body remains unchanged.

[0045] By setting an adjuster turntable 8 that can rotate relative to the adjuster housing 7, when the backrest frame 3 or seat cushion frame 2 is adjusted, an angular momentum offset is generated between the adjuster turntable 8 and the adjuster housing 7, so that the angle between the extension direction of the connecting part 9 of the adjuster turntable 8 and the seat frame 1 along the front and rear directions of the vehicle remains unchanged.

[0046] like Figures 1-2As shown, in some embodiments, the guide rail is an arc-shaped groove 10, which is disposed on the connecting plate 6 between the first rotating shaft 5 and the second rotating shaft 4. When the seat cushion frame 2 drives the backrest frame 3 to rotate around the second rotating shaft 4, the first rotating shaft 5 rotates around the second rotating shaft 4, and the angle adjuster turntable 8 moves together with the first rotating shaft 5. The pin block slides in the arc-shaped groove 10, so that the connecting part 9 moves downward in translation. The angle between the extension direction of the connecting part 9 and the vertical direction remains unchanged. The radius of the circle where the arc-shaped groove 10 is located is equal to the distance between the first rotating shaft 5 and the second rotating shaft 4. The center of the circle where the arc-shaped groove 10 is located is located on the extension line of the first rotating shaft 5 and the second rotating shaft 4.

[0047] Furthermore, the pin is positioned at the intersection of the line connecting the axis of the first rotating shaft 5 and the axis of the second rotating shaft 4 with the arc-shaped groove 10. The pin contacts the inner wall of the arc-shaped groove 10. By limiting the initial position of the pin, the arc-shaped groove 10 limits the position of the pin when the backrest frame 3 is adjusted, and the angle adjuster turntable 8 does not move.

[0048] The following will explain the specific process of setting and adjusting the position of the arc-shaped groove 10:

[0049] like Figures 1-3 As shown, straight line AG is the line of symmetry of connecting part 9, A is the rotation center of the first rotating shaft 5, straight line BH passes through the second rotating shaft 4, B coincides with the rotation center of the second rotating shaft 4, straight line AG and BH are on the same extension line, AG = BH, the center of the first circle 11 is concentric with the second rotating shaft 4, the first circle 11 passes through point A, the center of the second circle 12 is point H, and it passes through point G. Arc GG' is the arc-shaped groove 10.

[0050] When the second rotating shaft 4 rotates, the adjuster housing 7, the backrest frame 3, and the seat cushion frame 2 simultaneously rotate around the second rotating shaft 4 at a certain angle (a). The position of the first rotating shaft 5 moves from A to A'. Since the connecting part 9 of the adjuster turntable 8 is rigid, the distance between A and G is fixed. Therefore, during the rotation, the pin block moves from point G to G' in the arc groove 10, keeping the distance between point G' and point A' consistent with the distance between A and G, that is, it moves downwards in translation. At this time, relative to the seat frame 1, the adjuster turntable 8 does not undergo angular displacement, while the adjuster housing 7 deflects backward by an angle a along with the seat cushion frame 2. An angular momentum displacement of angle a is generated between the adjuster turntable 8 and the adjuster housing 7, which is transmitted to the retractor vehicle sensing device through the core wire.

[0051] like Figures 4-5As shown, when the first pivot 5 rotates, the adjuster housing 7 and the backrest frame 3 will simultaneously rotate by an angle b around the first pivot 5. The connecting part 9 should also rotate accordingly. However, because the arc groove 10 limits the pin, the imaginary rotation radius of the pin intersects with the trajectory of the arc groove 10, so that the pin point G will remain stationary in the arc groove 10. Therefore, the connecting part 9 does not move. At this time, the adjuster turntable 8 does not shift angle relative to the seat frame 1, while the adjuster housing 7 deflects backward by an angle b with the backrest frame 3. An angular momentum shift of angle b is generated between the adjuster turntable 8 and the adjuster housing 7, which is transmitted to the retractor vehicle sensing device through the core wire.

[0052] like Figures 1-2 As shown, in some embodiments, the portion of the turntable 8 located inside the turntable housing 7 has a central through hole, the axis of which coincides with the axis of the first rotating shaft 5. By opening a central through hole on the turntable 8, it is convenient to connect the turntable 8 to the first rotating shaft 5, while preventing the turntable 8 from rotating together with the first rotating shaft 5.

[0053] Furthermore, the angle adjuster turntable 8 is sleeved on the outside of the first rotating shaft 5 through the central through hole. The angle adjuster turntable 8 is rotatably connected to the first rotating shaft 5. When the first rotating shaft 5 rotates, the first rotating shaft 5 drives the backrest frame 3 to rotate, and the angle adjuster housing 7 moves together with the backrest frame 3. Since the angle adjuster turntable 8 is rotatably connected to the first rotating shaft 5, the angle adjuster turntable 8 will not rotate with the first rotating shaft 5, so that the angle adjuster turntable 8 can rotate relative to the angle adjuster housing 7.

[0054] Furthermore, the angle adjuster housing 7 has a notch. When the angle adjuster turntable 8 rotates relative to the angle adjuster housing 7, the connecting part 9 moves within the notch. By creating a notch in the angle adjuster housing 7, it is ensured that when the angle adjuster turntable 8 rotates relative to the angle adjuster housing 7, the angle adjuster housing 7 will not affect the connecting part 9.

[0055] Example 2

[0056] like Figure 6 As shown, Embodiment 2 differs from Embodiment 1 in the arrangement of the guide rail and the connection method between the pin block and the connecting part. The guide rail is a linear slide rail 16, and the pin block 15 is slidably connected to the linear slide rail 16. The connecting part 9 is connected to the pin block 15 through an elastic member 14. The elastic member 14 is always in a stretched state so that when the backrest frame 3 or the seat cushion frame 2 is adjusted, the extension line of the connecting part 9 is always perpendicular to the linear slide rail 16.

[0057] By setting an elastic element 14 that is always in a stretched state, when the backrest frame 3 or the seat cushion frame 2 is adjusted, under the biasing action of the elastic element 14, the extension line of the connecting part 9 is always perpendicular to the linear slide rail 16, so that an angular momentum offset is generated between the adjuster turntable 8 and the adjuster housing 7.

[0058] Example 3

[0059] like Figures 1-7 As shown, based on the same inventive concept, this specification provides an embodiment of a car seat, including a backrest frame 3, a seat cushion frame 2, and a seat frame 1. The backrest frame 3 can be angled relative to the seat cushion frame 2 via a first pivot 5, and the seat cushion frame 2 can be angled relative to the seat frame 1 via a second pivot 4. It also includes a retractor and an angle adjuster device as described in Embodiment 1 or Embodiment 2. The angle adjuster device is mounted on the backrest frame 3, and the angle adjuster turntable 8 is connected to the vehicle sensing device of the retractor via a core wire. When the backrest frame 3 or the seat cushion frame 2 is angled, an angular momentum shift occurs between the angle adjuster turntable 8 and the angle adjuster housing 7, which is transmitted to the vehicle sensing device of the retractor via the core wire, so that the vehicle sensing device remains horizontal.

[0060] By using the above-mentioned angle adjuster device, when the backrest frame 3 is adjusted relative to the seat cushion frame 2 via the first rotating shaft 5, the angle adjuster housing 7 moves together with the backrest frame 3, the guide rail limits the pin block so that the angle adjuster turntable 8 does not move, and an angular momentum offset is generated between the angle adjuster turntable 8 and the angle adjuster housing 7, which is transmitted to the vehicle sensing device of the retractor through the core wire, so that the vehicle sensing device remains horizontal.

[0061] When the seat cushion frame 2 can be angled relative to the seat frame 1 via the second pivot 4, the backrest frame 3 rotates together with the seat cushion frame 2, and the pin slides along the guide rail, causing the connecting part 9 to translate relative to the seat frame 1. This causes an angular momentum offset between the adjuster turntable 8 and the adjuster housing 7, which is transmitted to the vehicle sensing device of the retractor through the core wire, so that the vehicle sensing device remains horizontal.

[0062] like Figure 7 As shown, in the implementation, the car seat also includes a seat slide rail 13, which is installed on the vehicle body. The seat frame 1 can slide horizontally along the seat slide rail 13. By installing the seat slide rail 13, the seat frame 1 can move back and forth in the car along the seat slide rail 13. The seat slide rail 13 is set horizontally to ensure that the seat frame 1 will not deviate at an angle when it moves along the seat slide rail 13.

[0063] Please see Figures 1-5 and Figure 7The specific workflow of the car seat using Example 1 will be described below:

[0064] When the seat cushion frame 2 needs to be adjusted, the second pivot 4 drives the seat cushion frame 2 to rotate, and the seat cushion frame 2 drives the backrest frame 3 to rotate around the axis of the second pivot 4. The adjuster housing 7 rotates together with the backrest frame 3, and the pin slides in the arc groove 10, so that the connecting part 9 moves downward in translation. The connecting part 9 will not be angularly offset relative to the seat frame 1. An angular momentum offset is generated between the adjuster turntable 8 and the adjuster housing 7, which is transmitted to the vehicle sensing device of the retractor through the core wire, so that the vehicle sensing device remains horizontal.

[0065] When the backrest frame 3 needs to be adjusted, the first pivot 5 drives the backrest frame 3 to rotate, and the backrest frame 3 drives the angle adjuster housing 7 to rotate. Since the arc groove 10 limits the pin block, the pin block will not move, so the connecting part 9 and the angle adjuster turntable 8 will not move. An angular momentum offset is generated between the angle adjuster turntable 8 and the angle adjuster housing 7, which is transmitted to the vehicle sensing device of the retractor through the core wire, so that the vehicle sensing device remains horizontal.

[0066] Please see Figure 6 The specific workflow of the car seat using Example 2 will be described below:

[0067] When the seat cushion frame 2 needs to be adjusted, the second rotating shaft 4 drives the seat cushion frame 2 to rotate, and the seat cushion frame 2 drives the backrest frame 3 to rotate around the axis of the second rotating shaft 4. The angle adjuster housing 7 rotates together with the backrest frame 3. Under the bias of the elastic element 14, the pin block 15 moves along the linear slide rail 16 to the rear of the vehicle. The angle between the connecting part 9 and the linear slide rail 16 remains unchanged, so that the angle adjuster turntable 8 and the angle adjuster housing 7 generate angular momentum offset, which is transmitted to the vehicle sensing device of the retractor through the core wire, so that the vehicle sensing device remains horizontal.

[0068] When the backrest frame 3 needs to be adjusted, the backrest frame 3 is rotated by the first rotating shaft 5, and the backrest frame 3 drives the angle adjuster housing 7 to rotate. Under the biasing action of the elastic element 14, the connecting part 9 remains stationary, so that the angle adjuster turntable 8 and the angle adjuster housing 7 generate angular momentum offset, which is transmitted to the vehicle sensing device of the retractor through the core wire, so that the vehicle sensing device remains horizontal.

[0069] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the method embodiments described later are relatively simple in description because they correspond to the system; relevant parts can be referred to the descriptions in the system embodiments.

[0070] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A zero-gravity seat angle adjuster device, characterized in that, the zero-gravity seat comprises a backrest frame, a seat cushion frame and a seat frame, the seat frame is provided with a vertically upward extending connecting plate on the left and right sides of the end behind the vehicle, the seat cushion frame is pivotally fixed on the connecting plate through a second rotating shaft, the backrest frame is pivotally fixed on the seat cushion frame through a first rotating shaft, and the connecting plate is provided with a guide rail; the angle adjuster device comprises an angle adjuster housing and an angle adjuster rotating disc, the angle adjuster housing is mounted on the backrest frame, the angle adjuster rotating disc is arranged in the angle adjuster housing and coaxially arranged with the first rotating shaft, the angle adjuster rotating disc is rotatable relative to the angle adjuster housing, the angle adjuster rotating disc comprises a connecting part extending to the outside of the angle adjuster housing, and the connecting part is provided with a pin block inserted into the guide rail; wherein, when the backrest frame or the seat cushion frame is angle adjusted, the angle adjuster housing rotates around the first rotating shaft or the second rotating shaft, the guide rail limits and / or guides the pin block, so that the angle between the extending direction of the connecting part and the seat frame along the front and rear direction of the vehicle body remains unchanged; the guide rail is a circular arc slot arranged on the connecting plate between the first rotating shaft and the second rotating shaft, the radius of the circular arc slot is equal to the distance between the first rotating shaft and the second rotating shaft, and the center of the circular arc slot is located on the extension line of the first rotating shaft and the second rotating shaft; the pin block is arranged at the intersection point of the connecting line between the axis of the first rotating shaft and the axis of the second rotating shaft and the circular arc slot; a notch is formed in the angle adjuster housing, and the connecting part moves in the notch when the angle adjuster rotating disc rotates relative to the angle adjuster housing.

2. The zero gravity seat recliner device of claim 1, wherein, When the backrest frame is angle adjusted, the circular arc slot limits the pin block, so that the connecting part does not move relative to the seat frame.

3. The zero gravity seat recliner device of claim 1 or 2, wherein, When the seat cushion frame is angle adjusted, the circular arc slot guides the pin block, so that the connecting part translates relative to the seat frame.

4. The zero gravity seat recliner apparatus of claim 1, wherein, the part of the angle adjuster rotating disc in the angle adjuster housing is provided with a center through hole, and the axis of the center through hole and the axis of the first rotating shaft coincide with each other.

5. The zero gravity seat recliner device of claim 4, wherein, the angle adjuster rotating disc is sleeved outside the first rotating shaft through the center through hole, and the angle adjuster rotating disc and the first rotating shaft are rotationally connected, so that the angle adjuster rotating disc is rotatable relative to the angle adjuster housing.

6. The zero gravity seat recliner apparatus of claim 1, wherein, the guide rail is a straight line slide rail, the pin block and the straight line slide rail are slidingly connected, the connecting part and the pin block are connected through an elastic member, the elastic member is always in a stretched state, so that the extending line of the connecting part is always perpendicular to the straight line slide rail when the backrest frame or the seat cushion frame is adjusted.

7. A car seat comprising a backrest frame, a seat cushion frame and a seat frame, the backrest frame being angularly adjustable relative to the seat cushion frame by means of a first swivel axis, the seat cushion frame being angularly adjustable relative to the seat frame by means of a second swivel axis, characterized in that The recliner device is installed on the backrest framework, and the recliner dial is connected with the car sensing device of the retractor through a core wire; wherein, when the backrest framework or the seat cushion framework is adjusted in angle, angular momentum offset is generated between the recliner dial and the recliner housing, which is transmitted to the car sensing device of the retractor through the core wire, so that the car sensing device remains horizontal.

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