Seat scroll variable center support structure and automobile seat

Abstract

The application provides a seat volute variable center support structure and an automobile seat, and relates to the technical field of automobile seats. The seat volute variable center support structure comprises a seat pan, a seat back and a volute. The seat pan is pivotally connected with the seat back. A fixed support member is fixedly arranged on the seat back and located at the pivot connection position of the seat pan and the seat back. A variable center support member is pivotally connected to the seat back. A guide sliding groove is formed in the variable center support member. A sliding block matched with the guide sliding groove is arranged on the seat pan. During the process of flattening the seat back, the abutting surface of the variable center support member and the volute is away from the volute. One end of the volute is clamped to the seat pan, and the other end is clamped to the fixed support member. During the process of flattening the seat back, the abutting surface of the variable center support member and the volute is concave to the abutting surface of the fixed support member and the volute. The automobile seat comprises the seat volute variable center support structure. The technical effect of good use effect of the automobile seat volute is achieved.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and more specifically, to a variable center support structure for a seat spiral and an automotive seat. Background Technology

[0002] Currently, passenger cars, truck driver seats, and other seats all have backrests that can be adjusted backward and forward. The backward adjustment range can be from 90 degrees to 180 degrees, meaning the backrest can be reclined flat for the driver to rest. However, there is a structural element involved in this process: the backrest needs to be returned to its normal position from the reclined position using a worm spring.

[0003] However, the worm spring is fixed to the seat back. Due to the characteristics of the restoring worm spring, as the outer fixed point of the worm spring rotates around the center (the inner center is fixed), its restoring force will increase sharply. This will cause the seat back to become extremely difficult to recline if it needs to be folded down before reaching the desired reclined angle. This will lead to great dissatisfaction among drivers and passengers with the folding-down function. Another scenario is that if the seat back is already folded down and another passenger gets in and needs to turn the seat back into use, the seat back will immediately fall towards the operator the moment it is unlocked. The seat back will violently impact the operator, which can easily cause an accident and poses a safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide a variable center support structure for a seat worm gear and an automotive seat, so as to alleviate the technical problem of poor user experience of the seat reset worm gear in the prior art.

[0005] In a first aspect, embodiments of the present invention provide a variable center support structure for a seat worm gear, including a seat basin, a seat back, and a worm gear;

[0006] The seat basin is pivotally connected to the seat back, and a fixed support is fixedly provided on the seat back, the fixed support being located at the pivot point between the seat basin and the seat back.

[0007] A variable center support is pivotally connected to the seat back, and a guide groove is provided on the variable center support. A slider adapted to the guide groove is provided on the seat pan. When the seat back swings relative to the seat pan, the slider can move relative to the guide groove. The slider can control the variable center support to rotate relative to the seat back, so that the contact surface between the variable center support and the worm gear moves away from the worm gear during the process of the seat back being flattened.

[0008] One end of the worm gear is engaged with the seat basin, and the other end is engaged with the fixed support. When the seat back is flat, the contact surface between the variable center support and the worm gear is recessed within the contact surface between the fixed support and the worm gear.

[0009] In conjunction with the first aspect, the present invention provides one possible implementation of the first aspect, wherein the aforementioned sitz bath has a variable center control seat, and the slider is disposed on the variable center control seat.

[0010] In conjunction with the first aspect, the present invention provides one possible implementation of the first aspect, wherein the variable center control seat has a first lug for engaging with the worm gear.

[0011] In conjunction with the first aspect, the present invention provides one possible implementation of the first aspect, wherein the aforementioned fixing support is a fixing ring seat;

[0012] The fixing ring seat is fixedly mounted on the seat back. The fixing ring seat has an abutment plate that can abut against the worm gear. The abutment plate has a second hook for engaging with the worm gear.

[0013] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein the variable center support includes a pivot seat, a control plate, and a tension plate;

[0014] A pivot is fixedly installed on the seat back, the pivot seat is pivotally connected to the pivot, the control plate is located on the outer ring of the pivot seat, and the tension plate is located on the inner ring of the pivot seat.

[0015] The guide groove is formed on the control plate, and the tension plate can abut against the worm gear.

[0016] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein the guide groove includes an arc groove and a straight groove;

[0017] The curved groove and the straight groove are interconnected, and when the seat back is laid flat, the slider is located in the straight groove.

[0018] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein the cross-sections of the aforementioned abutment plate and the tension plate are arc-shaped.

[0019] In conjunction with the first aspect, the present invention provides one possible implementation of the first aspect, wherein, when the slider is located within the linear groove, the outer edge of the tension plate is recessed within the outer edge of the abutment plate.

[0020] In conjunction with the first aspect, the present invention provides one possible implementation of the first aspect, wherein the aforementioned pivot is welded to the seat back, and the seat back is provided with a protruding seat for user support of the pivot seat.

[0021] Secondly, embodiments of the present invention provide an automobile seat, including the aforementioned seat spiral variable center support structure.

[0022] Beneficial effects:

[0023] This invention provides a variable center support structure for a seat, including a seat basin, a seat back, and a worm gear. The seat basin is pivotally connected to the seat back, and a fixed support is fixedly installed on the seat back at the pivot point between the seat basin and the seat back. A variable center support is pivotally connected to the seat back, and a guide groove is provided on the variable center support. A slider adapted to the guide groove is provided on the seat basin. When the seat back swings relative to the seat basin, the slider can move relative to the guide groove. The slider can control the variable center support to rotate relative to the seat back, so that the contact surface between the variable center support and the worm gear moves away from the worm gear when the seat back is flattened. One end of the worm gear is engaged with the seat basin, and the other end is engaged with the fixed support. When the seat back is flattened, the contact surface between the variable center support and the worm gear is recessed within the contact surface between the fixed support and the worm gear.

[0024] Specifically, when the user lays down the seat back, the fixed support and the variable center support lie down with the seat back. During this process, the worm gear contracts. In the initial stage of the seat back lying down, the worm gear winds around the arc structure formed by the contact surfaces of the fixed support and the variable center support. As the seat back lies down, the elastic potential energy of the worm gear increases. Towards the end of the seat back lying down, the slider on the seat pan slides in the guide groove on the variable center support and controls the variable center support to rotate at the pivot point between the variable center support and the seat back. This causes the contact surface between the variable center support and the worm gear to move away from the worm gear, thereby reducing the radius of the arc structure of the worm gear winding and thus reducing the elastic potential energy of the worm gear. This allows the user to lie down the seat back more easily. Conversely, when the user returns the seat back to its original position, the worm gear moves the seat back to its original position, and at the same time, the worm gear moves the variable center support to its original position, improving the user experience and reducing the probability of accidents.

[0025] This invention provides an automotive seat, including a variable center support structure with a seat spiral. The automotive seat has the advantages described above compared to existing technologies, which will not be elaborated further here. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the variable center support structure for the seat worm gear provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the variable center support member in the variable center support structure of the seat worm gear provided in an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the seat back of the variable center support structure of the seat worm provided in an embodiment of the present invention in a vertical state;

[0030] Figure 4 A schematic diagram showing the transition state between a vertical and a flat position of the seat backrest of the variable center support structure of the seat spiral provided in an embodiment of the present invention;

[0031] Figure 5 A schematic diagram of the seat back of the variable center support structure of the seat worm provided in the embodiment of the present invention in a flat state;

[0032] Figure 6 The diagram shows the worm torque of the variable center support structure for the seat worm provided in the embodiments of the present invention and the worm torque of the prior art structure.

[0033] icon:

[0034] 100 – Seat basin; 110 – Sliding block; 120 – Variable center control seat; 130 – First hanging lug;

[0035] 200 - Seat backrest;

[0036] 300 - snail coil;

[0037] 400 – Fixed support; 410 – Abutment plate; 420 – Second lug;

[0038] 500 – Variable center support; 510 – Guide groove; 511 – Arc groove; 512 – Straight groove; 520 – Pivot seat; 530 – Control plate; 540 – Tension plate; 550 – Pivot. Detailed Implementation

[0039] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0044] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, this embodiment provides a variable center support structure for a seat, including a seat basin 100, a seat back 200, and a spiral 300. The seat basin 100 is pivotally connected to the seat back 200, and a fixed support member 400 is fixedly disposed on the seat back 200, located at the pivot point between the seat basin 100 and the seat back 200. A variable center support member 500 is pivotally connected to the seat back 200, and a guide groove 510 is provided on the variable center support member 500. A slider 110 adapted to the guide groove 510 is provided on the seat basin 100. When the seat basin 100 swings relative to the seat back 200, the slider 110 can move relative to the guide groove 510. The slider 110 can control the variable center support 500 to rotate relative to the seat back 200, so that the contact surface between the variable center support 500 and the worm gear 300 moves away from the worm gear 300 during the process of the seat back 200 being laid flat. One end of the worm gear 300 is engaged with the seat basin 100, and the other end is engaged with the fixed support 400. When the seat back 200 is laid flat, the contact surface between the variable center support 500 and the worm gear 300 is recessed into the contact surface between the fixed support 400 and the worm gear 300.

[0045] Specifically, when the user lowers the seat back 200, the fixed support 400 and the variable center support 500 lower along with the seat back 200. During this process, the spiral coil 300 contracts. In the initial stage of lowering the seat back 200, the spiral coil 300 winds around the arc structure formed by the contact surfaces of the fixed support 400 and the variable center support 500. As the seat back 200 lowers further, the elastic potential energy of the spiral coil 300 increases. In the final stage of lowering the seat back 200, the slider 110 on the seat pan 100 slides within the guide groove 510 on the variable center support 500. The variable center support 500 is rotated at the pivot point between the variable center support 500 and the seat back 200, thereby causing the contact surface between the variable center support 500 and the worm gear 300 to move away from the worm gear 300. This reduces the radius of the arc structure of the worm gear 300 during winding, thereby reducing the elastic potential energy of the worm gear 300. This allows the user to better flatten the seat back 200. Conversely, when the user returns the flattened seat back 200 to its original position, the worm gear 300 drives the seat back 200 to return to its original position, and at the same time, the worm gear 300 drives the variable center support 500 to return to its original position. This improves the user experience and reduces the probability of accidents.

[0046] It should be noted that the worm gear 300 in the attached diagram of the instruction manual is a schematic structure. In actual use, the inner ring of the worm gear 300 can tightly abut against both the fixed support member 400 and the variable center support member 500. Therefore, the swing of the variable center support member 500 can adjust the tightening strength of the worm gear 300.

[0047] See Figure 1 - Figure 5As shown, in an optional embodiment, the sitz bath 100 has a variable center control seat 120, and the slider 110 is disposed on the variable center control seat 120.

[0048] Specifically, the variable center control seat 120 is fixedly mounted on the seat 100, and the slider 110 is mounted on the variable center control seat 120. The slider 110 can be adapted to the guide groove 510 of the variable center support 500.

[0049] The variable center control base 120 has a first lug 130 for attaching to the worm gear 300, and one end of the worm gear 300 can be attached to the first lug 130.

[0050] See Figure 1 - Figure 5 As shown, in the optional embodiment, the fixed support 400 adopts a fixed ring seat; the fixed ring seat is fixedly installed on the seat back 200, and the fixed ring seat has an abutment plate 410 that can abut against the worm gear 300, and the abutment plate 410 has a second hook 420 for hooking with the worm gear 300.

[0051] Specifically, the fixing ring seat is fixedly installed on the seat back 200, and the fixing ring seat is provided with an abutment plate 410. The abutment plate 410 has an abutment surface. After one end of the worm gear 300 is hung on the second hanging ear 420, the inner ring of the worm gear 300 can abut against the abutment surface of the abutment plate 410.

[0052] See Figure 1 - Figure 5 As shown, in the optional embodiment, the variable center support 500 includes a pivot seat 520, a control plate 530, and a tension plate 540; a pivot 550 is fixedly installed on the seat back 200, the pivot seat 520 is pivotally connected to the pivot 550, the control plate 530 is located on the outer ring of the pivot seat 520, and the tension plate 540 is located on the inner ring of the pivot seat 520; a guide groove 510 is formed on the control plate 530, and the tension plate 540 can abut against the worm gear 300.

[0053] The guide groove 510 includes an arc groove 511 and a straight groove 512; the arc groove 511 and the straight groove 512 are connected to each other, and when the seat back 200 is laid flat, the slider 110 is located in the straight groove 512.

[0054] The cross-sections of the abutment plate 410 and the tension plate 540 are arc-shaped.

[0055] When the slider 110 is located in the straight groove 512, the outer edge of the tension plate 540 is recessed into the outer edge of the abutment plate 410, and the abutment surface of the tension plate 540 is located at the outer edge of the tension plate 540, and the abutment surface of the abutment plate 410 is located at the outer edge of the abutment plate 410.

[0056] The pivot 550 is welded to the seat back 200, and the seat back 200 is provided with a protruding seat for the user support pivot 520. The protruding seat enables the pivot 520 to rotate straight without warping.

[0057] Specifically, the pivot seat 520, control plate 530, and tension plate 540 are integrated into one structure. When the seat back 200 is laid flat, the seat back 200 can drive the pivot seat 520 to move accordingly. The guide groove 510 on the control plate 530 moves synchronously with the control plate 530. Since the slider 110 on the seat basin 100 is stationary, when the slider 110 slides in the guide groove 510, it can cause the control plate 530 to rotate relative to the pivot 550, thereby adjusting the position of the tension plate 540 relative to the worm gear 300, and thus adjusting the tension of the worm gear 300 through the tension plate 540.

[0058] It should be noted that when the slider 110 slides within the arc groove 511 of the guide groove 510, the position of the tension plate 540 relative to the worm gear 300 will not be adjusted; that is, the tension plate 540 remains stationary relative to the abutment plate 410. When the slider 110 slides within the straight groove 512 of the guide groove 510, the position of the tension plate 540 relative to the worm gear 300 can be adjusted, causing the tension plate 540 to gradually move away from the worm gear 300; that is, the tension plate 540 moves relative to the abutment plate 410 toward the pivot center of the seat basin 100 and the seat back 200.

[0059] See Figure 5 As shown, after the seat back 200 is fully flattened, the tension plate 540 is closer to the pivot center of the seat basin 100 and the seat back 200 than the abutment plate 410. Therefore, the innermost diameter of the spiral 300 wrapped around the abutment plate 410 and the tension plate 540 will become smaller. By reducing the bending radius of the spiral 300, the user can better flatten the seat back.

[0060] See Figure 3 , Figure 5 and Figure 6As shown, for example, during the process of the seat back 200 being laid flat from a vertical 90-degree angle, within the initial first angle of flattening, the elasticity of the spiral 300 is in a proportional range (the subsequent second angle of flattening will cause the elasticity of the spiral 300 to increase dramatically), and the release of the elasticity of the spiral 300 within the first angle will not pose a danger to the user. During the continued rearward folding process, the slider 110 enters the straight groove 512 from the curved groove 511, and the sliding distance of the slider 110 within the straight groove 512 corresponds to the swing of the seat back 200. The moving angle corresponds to the second angle. At this time, the tension plate of the variable center support 500 moves backward relative to the abutment plate 410, thereby reducing the bending radius of the worm 300 and absorbing the rapidly increasing elastic potential energy of the worm 300. This makes the elastic potential energy of the worm 300 increase slowly or not at all, keeping it within the safe range of the first angle. That is, the elastic potential energy of the worm 300 will not rise sharply, making it easier for the user to flatten the seat back 200. The user can place the seat back 200 to the desired position with a small pushing force. Furthermore, during the process of the seat back 200 returning to an upright position, the worm gear 300 releases under the action of its own elastic potential energy (the worm gear 300 transitions from a small curl radius to a large curl radius, that is, the release of elastic potential energy drives the seat back 200 to swing). At this time, the elastic force of the worm gear 300 is within a safe range, so that the swing speed and force of the seat back 200 are within the user's controllable range and will not cause harm to the user. At the same time, during the release of the worm gear 300, the slider 110 moves synchronously from the straight groove 512 to the arc groove 511. During this process, the tension plate 540 of the variable center support 500 does not drive the worm gear 300 to accelerate, but the worm gear 300 drives the tension plate 540 to reset, so that the elastic force of the seat back 200 when it returns to the upright position is within a safe range and will not cause harm to the user.

[0061] It should be noted that during the seat backrest 200 restoration process, when the slider 110 moves from the straight groove 512 to the curved groove 511, the worm gear 300 first releases and drives the seat backrest 200 to reset. The seat backrest 200 then moves the variable center support 500. The worm gear 300 first transitions from a small curl radius to a large curl radius, releasing its internal space. Then, it drives the tension plate 540 of the variable center support 500 to move into the space released by the worm gear 300, thereby resetting the tension plate 540. During this process, the tension plate 540 does not drive the worm gear 300 to transition to a large curl radius, thus not increasing the elasticity of the worm gear 300 and not increasing the reset speed of the seat backrest 200.

[0062] That is, during the process of the seat back 200 being laid flat, the worm gear 300 is wound around the tension plate 540. The tension plate 540 moves inward under the action of both the slider 110 and the straight groove 512, thereby providing extra space for the worm gear 300 to contract. This allows the worm gear 300 to change from a large curl radius to a small curl radius, thereby absorbing the rapidly increasing elastic potential energy of the worm gear 300 when the seat back 200 is laid flat. This keeps the elasticity of the worm gear 300 within a suitable range, allowing the user to lay the seat back 200 flat with a small pushing force.

[0063] This embodiment provides an automobile seat, including a seat spiral variable center support structure.

[0064] Specifically, the car seat provided in this embodiment has the advantages of the aforementioned variable center support structure of the seat volute compared with the prior art, which will not be elaborated here.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A variable center support structure for a seat spiral, characterized in that, include: The sitz bath (100), the seat back (200), and the worm gear (300); The seat basin (100) is pivotally connected to the seat back (200), and a fixed support (400) is fixedly provided on the seat back (200). The fixed support (400) is located at the pivot point between the seat basin (100) and the seat back (200). A variable center support (500) is pivotally connected to the seat back (200). A guide groove (510) is provided on the variable center support (500). A slider (110) adapted to the guide groove (510) is provided on the seat basin (100). When the seat back (200) swings relative to the seat basin (100), the slider (110) can move relative to the guide groove (510). The slider (110) can control the variable center support (500) to rotate relative to the seat back (200) so that the contact surface between the variable center support (500) and the worm gear (300) moves away from the worm gear (300) during the process of the seat back (200) being laid flat. One end of the worm gear (300) is engaged with the seat basin (100), and the other end is engaged with the fixed support (400). When the seat back (200) is flat, the contact surface between the variable center support (500) and the worm gear (300) is recessed within the contact surface between the fixed support (400) and the worm gear (300). The fixed support (400) adopts a fixed ring seat; the fixed ring seat is fixedly installed on the seat back (200), and the fixed ring seat has an abutment plate (410) that can abut against the worm gear (300), and the abutment plate (410) has a second hook (420) for hooking with the worm gear (300). The variable center support (500) includes a pivot seat (520), a control plate (530), and a tension plate (540); a pivot (550) is fixedly provided on the seat back (200), the pivot seat (520) is pivotally connected to the pivot (550), the control plate (530) is located on the outer ring of the pivot seat (520), and the tension plate (540) is provided on the inner ring of the pivot seat (520); the guide groove (510) is formed on the control plate (530), and the tension plate (540) can abut against the worm gear (300).

2. The variable center support structure for the seat spiral as described in claim 1, characterized in that, The sitz bath (100) has a variable center control seat (120), and the slider (110) is disposed on the variable center control seat (120).

3. The variable center support structure for the seat worm gear according to claim 2, characterized in that, The variable center control seat (120) has a first lug (130) for attaching to the worm gear (300).

4. The variable center support structure for the seat worm gear according to claim 1, characterized in that, The guide groove (510) includes an arc groove (511) and a straight groove (512); The arc groove (511) and the straight groove (512) are interconnected. When the seat back (200) is flat, the slider (110) is located in the straight groove (512).

5. The variable center support structure for the seat spiral as described in claim 4, characterized in that, The cross-sections of the abutment plate (410) and the tension plate (540) are arc-shaped.

6. The variable center support structure for the seat spiral as described in claim 5, characterized in that, When the slider (110) is located in the straight groove (512), the outer edge of the tension plate (540) is recessed into the outer edge of the abutment plate (410).

7. The variable center support structure for the seat worm gear according to claim 1, characterized in that, The pivot (550) is welded to the seat back (200), and the seat back (200) is provided with a protruding seat for user support of the pivot seat (520).

8. A car seat, characterized in that, Includes the variable center support structure of the seat worm gear as described in any one of claims 1-7.

Images