Pulling wire structure for double-lock synchronous adaptive control and automobile seat

Abstract

This invention provides a cable structure for dual-lock synchronous adaptive control and an automotive seat, relating to the technical field of automotive seat equipment. The cable structure for dual-lock synchronous adaptive control includes a drive end, a first support portion, a second support portion, a splitter, and a synchronization adjustment component. The drive end is connected to the splitter via a first cable, the first support portion is connected to the splitter via a second cable, and the second support portion is connected to the splitter via a third cable. A synchronization adjustment component is threaded through the third cable. The synchronization adjustment component includes a synchronization housing, a synchronization pressure block, and a synchronization elastic element. The synchronization pressure block is slidably inserted into the synchronization housing, and the synchronization elastic element is disposed between the synchronization pressure block and the synchronization housing. The synchronization pressure block is loosely fitted onto the third cable. A drive conduit is fitted onto the third cable, and the drive conduit can drive the synchronization pressure block to compress the synchronization elastic element. This achieves the technical effect of dual-lock cable synchronization.

Description

Technical Field

[0001] This invention relates to the field of automotive seat equipment technology, and more specifically, to a cable structure for dual-lock synchronous adaptive control and an automotive seat. Background Technology

[0002] In MPVs, SUVs, and other vehicles, the third-row seats can be folded back. To ensure the vehicle is stably secured before folding, the bottom of the seats is often equipped with a floor lock connected to the vehicle's locking mechanism. Ideally, the folding of the seats and the engagement / disengagement of the floor lock should be synchronized: when the seats begin to fold, the floor lock unlocks first, then the seats fold freely while the floor lock retracts simultaneously. Upon resetting, the floor lock automatically unfolds and locks itself during the seat's return to its original position.

[0003] In mechanical systems that require synchronous control of two or more remote actuators via a single drive source, a "one-to-many" cable drive scheme is often used. For example, in car seats, a single main cable often drives the folding and unfolding of two floor locks simultaneously. To ensure that the two floor locks can operate synchronously and ultimately reach the same locking angle, the effective working lengths of the two branch cables must be highly consistent. The traditional solution is to install a threaded adjuster on the branch cable, manually tightening it to fine-tune the fixed length of the cable housing to compensate for travel differences caused by manufacturing or installation errors or component wear. However, this adjustment method has drawbacks: it requires precise manual adjustment, which is time-consuming and labor-intensive, and once fixed, it cannot automatically adapt to new travel differences caused by temperature changes, component deformation, or wear during use. Summary of the Invention

[0004] The purpose of this invention is to provide a cable structure for dual-lock synchronous adaptive control and an automotive seat to alleviate the technical problem of asynchronous dual-lock cables in the prior art.

[0005] In a first aspect, embodiments of the present invention provide a pull-wire structure for dual-lock synchronous adaptive control, including a drive end, a first support part, a second support part, a splitter, and a synchronous adjustment component; The drive end is connected to the splitter via a first pull wire, the first support part is connected to the splitter via a second pull wire, and the second support part is connected to the splitter via a third pull wire; The synchronization adjustment assembly is threaded through the third pull line. The synchronization adjustment assembly includes a synchronization housing, a synchronization pressure block, and a synchronization elastic element. The synchronization pressure block is slidably inserted into the synchronization housing. The synchronization elastic element is disposed between the synchronization pressure block and the synchronization housing. The synchronization elastic element is located between the synchronization pressure block and the second support part. The synchronization pressure block is loosely fitted on the third pull line. A drive tube is sleeved on the third pull line. One end of the drive tube is fixedly connected to the splitter, and the other end is fixedly connected to the synchronous pressure block, so that the drive tube can drive the synchronous pressure block to compress the synchronous elastic element.

[0006] In conjunction with the first aspect, the present invention provides one possible implementation of the first aspect, wherein the aforementioned synchronizing blocks and the synchronizing elastic members are distributed along the extending direction of the synchronizing housing; One end of the synchronizing block is provided with a limit ring, and the other end can extend out of the synchronizing housing. The end of the synchronizing block extending out of the synchronizing housing is fixedly connected to the drive cable conduit.

[0007] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein the aforementioned synchronous pressure block has a threading channel for the third pull wire to pass through.

[0008] In conjunction with the first aspect, the present invention provides one possible implementation of the first aspect, wherein the aforementioned synchronizing elastic element is a helical spring.

[0009] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein the first exposed length of the second pull wire relative to the first support portion is greater than the second exposed length of the third pull wire relative to the second support portion, so that the second support portion reaches the storage state before the first support portion.

[0010] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein the pull wire structure for dual-lock synchronous adaptive control further includes a stroke absorption component, the drive end is connected to the stroke absorption component via a first pull wire, and the stroke absorption component is connected to the splitter; The stroke absorption assembly includes a stroke absorption shell, a stroke absorption sliding sleeve, a stroke absorption elastic element, and a stroke absorption pad; The stroke-absorbing outer shell is fixedly mounted on the seat frame, the stroke-absorbing sliding sleeve is slidably mounted inside the stroke-absorbing outer shell, and the stroke-absorbing pad is slidably mounted inside the stroke-absorbing sliding sleeve. The first pull cable is located between the stroke-absorbing pad and the stroke-absorbing sliding sleeve, and the first pull cable passes through the stroke-absorbing pad. When the first pull cable is pulled by the drive end, the stroke-absorbing pad can move toward the stroke-absorbing elastic member.

[0011] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein the elastic force of the stroke-absorbing elastic member is greater than the elastic force of the synchronous elastic member.

[0012] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein a first stepped channel is provided in the above-mentioned stroke absorption pad block, and one end of the first pull wire passes through the first stepped channel.

[0013] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein one end of the first pull wire has a first plug, and the first plug is inserted into the stroke absorption pad from the end with the larger inner diameter of the first stepped channel, so that the first pull wire can pull the stroke absorption pad toward the stroke absorption elastic member.

[0014] Secondly, embodiments of the present invention provide an automobile seat, including the aforementioned cable structure for dual-lock synchronous adaptive control.

[0015] Beneficial effects: This invention provides a pull-wire structure for dual-lock synchronous adaptive control, including a drive end, a first support part, a second support part, a splitter, and a synchronization adjustment component. The drive end is connected to the splitter via a first pull wire, the first support part is connected to the splitter via a second pull wire, and the second support part is connected to the splitter via a third pull wire. A synchronization adjustment component is threaded through the third pull wire. The synchronization adjustment component includes a synchronization housing, a synchronization pressure block, and a synchronization elastic element. The synchronization pressure block is slidably inserted into the synchronization housing, and the synchronization elastic element is disposed between the synchronization pressure block and the synchronization housing, located between the synchronization pressure block and the second support part. The synchronization pressure block is loosely fitted onto the third pull wire. A drive conduit is fitted onto the third pull wire, one end of which is fixedly connected to the splitter, and the other end is fixedly connected to the synchronization pressure block, so that the drive conduit can drive the synchronization pressure block to compress the synchronization elastic element.

[0016] Specifically, during use, the user triggers the seat to flip backward via the seat control button, simultaneously unlocking the first and second support units. The drive unit then rotates and tightens the first cable. This first cable simultaneously tightens the second and third cables in the splitter. The second and third cables pull the first and second support units in a folding motion. During this process, the second support unit completes its folding motion first, while the first support unit does not. The first cable continues to pull, and the first support unit continues its folding motion. The third cable moves towards the splitter. As the third cable is pulled back, the drive cable, which is fitted onto the third cable and located between the splitter and the synchronizing pressure block, moves into the synchronizing housing. During this process, the bent drive cable changes towards a straightened state, allowing the drive cable to push the synchronizing pressure block into the synchronizing housing, thus compressing the synchronizing elastic element. This design ensures that the first and second support units complete the designated actions synchronously.

[0017] This invention provides an automotive seat, including a cable structure for dual-lock synchronous adaptive control. The automotive seat has the advantages described above compared to existing technologies, which will not be elaborated further here. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the draw wire structure for dual-lock synchronous adaptive control provided in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the synchronization adjustment component in the pull-wire structure for dual-lock synchronous adaptive control provided in an embodiment of the present invention; Figure 3 This is a cross-sectional view of the stroke absorption component in the drawer structure for dual-lock synchronous adaptive control provided in an embodiment of the present invention.

[0020] icon: 10-Flip axis; 100 - Drive end; 110 - First pull wire; 200 - First support section; 210 - Second guy wire; 300 - Second support section; 310 - Third guy wire; 320 - Drive cable conduit; 400-splitter; 500 - Synchronization adjustment component; 510 - Synchronization housing; 520 - Synchronization pressure block; 521 - Limiting ring; 530 - Synchronization elastic element; 600 - Stroke absorption assembly; 610 - Stroke absorption housing; 620 - Stroke absorption sleeve; 630 - Stroke absorption elastic element; 640 - Stroke absorption pad. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0026] See Figure 1 , Figure 2 and Figure 3As shown, this embodiment provides a pull-wire structure for dual-lock synchronous adaptive control, including a drive end 100, a first support part 200, a second support part 300, a splitter 400, and a synchronization adjustment component 500. The drive end 100 is connected to the splitter 400 via a first pull wire 110, the first support part 200 is connected to the splitter 400 via a second pull wire 210, and the second support part 300 is connected to the splitter 400 via a third pull wire 310. The synchronization adjustment component 500 is threaded through the third pull wire 310, and the synchronization adjustment component 500 includes a synchronization housing 510 and a synchronization pressure block 52. The synchronous elastic element 530 and the synchronous pressure block 520 are slidably inserted into the synchronous housing 510. The synchronous elastic element 530 is disposed between the synchronous pressure block 520 and the synchronous housing 510. The synchronous elastic element 530 is located between the synchronous pressure block 520 and the second support part 300. The synchronous pressure block 520 is loosely fitted on the third pull wire 310. A drive wire tube 320 is fitted on the third pull wire 310. One end of the drive wire tube 320 is fixedly connected to the splitter 400, and the other end is fixedly connected to the synchronous pressure block 520, so that the drive wire tube 320 can drive the synchronous pressure block 520 to press the synchronous elastic element 530.

[0027] In this embodiment, "synchronous adjustment" refers to the synchronization of the final locking positions of the first support part 200 and the second support part 300.

[0028] Specifically, during use, the user triggers the seat to flip backward via the seat control button, simultaneously unlocking the first support 200 and the second support 300. Then, the drive end 100 rotates to tighten the first cable 110. The first cable 110 simultaneously tightens the second cable 210 and the third cable 310 in the splitter 400. The second cable 210 pulls the first support 200 to fold and stow, and the third cable 310 pulls the second support 300 to fold and stow. During this process, the second support 300 completes its folding and stowage action before the first support 200 completes its action. Then, the first cable 110 continues... As the pull continues, the first support 200 continues to fold and retract, and the third pull cable 310 can move relative to the splitter 400. At this time, as the third pull cable 310 is pulled back, the drive cable 320, which is sleeved on the third pull cable 310 and located between the splitter 400 and the synchronizing pressure block 520, will move into the synchronizing housing 510. During this process, the bent drive cable 320 will change towards a straightened state, so that the starting cable can push the synchronizing pressure block 520 towards the synchronizing housing 510, thereby causing the synchronizing pressure block 520 to compress the synchronizing elastic element 530. With this setting, it can be ensured that the first support 200 and the second support 300 can complete the specified action synchronously.

[0029] It should be noted that, using the pull-wire structure for dual-lock synchronous adaptive control provided in this embodiment, workers can directly install the pull-wire structure for dual-lock synchronous adaptive control on the car seat frame during the assembly process without manually adjusting the pull-wire length. It is only necessary to ensure that the first exposed length of the second pull-wire 210 relative to the first support 200 is greater than the second exposed length of the third pull-wire 310 relative to the second support 300. With this setting, no debugging is required, improving production efficiency, and the product can be directly assembled into the vehicle.

[0030] It should be noted that the first protruding length of the second pull cable 210 relative to the first support portion 200 is greater than the second protruding length of the third pull cable 310 relative to the second support portion 300, so that the second support portion 300 reaches the retracted state before the first support portion 200. With this arrangement, when the first pull cable 110 is driven, the second support portion 300 is guaranteed to reach the retracted state before the first support portion 200, thereby ensuring the normal operation of the synchronous adjustment component 500.

[0031] It should also be noted that during use, the third pull cable 310 passes freely through the synchronization adjustment component 500 without being obstructed by it. During the synchronization phase, as the third pull cable 310 continuously pulls back to the splitter 400, the bent third pull cable 310 and the drive tube 320 gradually straighten, allowing the third pull cable 310 to be pulled into the splitter 400. The end of the drive tube 320 away from the splitter 400 drives the synchronization pressure block 520 to insert into the synchronization housing 510, thereby compressing the synchronization elastic element 530. The synchronization elastic element 530 ensures that the third pull cable 310 remains taut.

[0032] It should be noted that the length of the drive conduit 320 is greater than the straight-line distance between the splitter 400 and the synchronizing block 520.

[0033] Among them, the synchronous elastic element 530 adopts a helical spring.

[0034] The synchronous pressure block 520 has a threading channel for the third pull wire 310 to pass through.

[0035] It should also be noted that the elastic force of the synchronous elastic element 530 is greater than the elastic force of the elastic element on the second support part 300. With this setting, the third pull wire 310 can drive the second support part 300 to work first.

[0036] See Figure 1 , Figure 2 and Figure 3As shown, in the optional embodiment, the synchronous pressure block 520 and the synchronous elastic member 530 are distributed along the extension direction of the synchronous housing 510; one end of the synchronous pressure block 520 is provided with a limit ring 521, and the other end can extend out of the synchronous housing 510. The end of the synchronous pressure block 520 extending out of the synchronous housing 510 is fixedly connected to the drive cable tube 320.

[0037] Specifically, when the synchronizing block 520 is driven by the driving cable 320, the limiting ring 521 at the end of the synchronizing block 520 can compress the synchronizing elastic element 530 to contract.

[0038] See Figure 1 , Figure 2 and Figure 3 As shown, in an optional embodiment, a stroke absorption component 600 is further included. The drive end 100 is connected to the stroke absorption component 600 via a first pull cable 110, and the stroke absorption component 600 is connected to the splitter 400. The stroke absorption component 600 includes a stroke absorption housing 610, a stroke absorption sleeve 620, a stroke absorption elastic member 630, and a stroke absorption pad 640. The stroke absorption housing 610 is fixedly mounted on the seat frame, the stroke absorption sleeve 620 is slidably mounted inside the stroke absorption housing 610, and the stroke absorption pad 640 is slidably mounted inside the stroke absorption sleeve 620, located between the stroke absorption pad 640 and the stroke absorption sleeve 620. The first pull cable 110 passes through the stroke absorption pad 640, and when the first pull cable 110 is pulled by the drive end 100, the stroke absorption pad 640 can move toward the stroke absorption elastic member 630.

[0039] The first support part 200 and the second support part 300 can be the floor lock mechanism of the seat.

[0040] Specifically, during the process of the seat flipping from its normal use state to its storage state, the seat's flipping shaft 10 rotates with the car seat. The flipping shaft 10 drives the drive end 100 to rotate, which in turn pulls the first cable 110. The first cable 110 pulls the travel-absorbing pad 640, causing the travel-absorbing elastic member 630 and the travel-absorbing sliding sleeve 620 to abut against each other. Furthermore, the elastic pressure of the travel-absorbing elastic member 630 is greater than the combined force of the first support part 200 and the second support part 300. The elasticity of the spring element ensures that when the floor lock mechanism is retracted, the travel absorption pad 640 does not compress the travel absorption spring element 630. Instead, the first pull cable 110 pulls the travel absorption sleeve 620 through the travel absorption pad 640, which in turn pulls the splitter 400. The second pull cable 210 and the third pull cable 310 within the splitter 400 then pull the first support 200 and the second support 300, thus completing the retraction of the floor lock mechanism. After the floor lock mechanism is fully retracted, the seat will continue to rotate a certain angle before returning to the retracted state. During this process, the drive end 100 continuously pulls and retracts the first pull cable 110. The first pull cable 110 then drives the travel absorption pad 640 to compress the travel absorption spring element 630, compressing it. This ensures that the first pull cable 110, the second pull cable 210, and the third pull cable 310 remain taut throughout the entire process.

[0041] In addition, during the process of the seat flipping from the storage state to the normal use state, the first pull cable 110, the second pull cable 210 and the third pull cable 310 are in a taut state throughout the entire process. During the operation, the elasticity of the stroke absorbing elastic member 630 is released first, then the elasticity of the synchronous elastic member 530 and the elasticity of the reset elastic member of the first support part 200 are released simultaneously, and finally the elasticity of the reset elastic member of the second support part 300 is released.

[0042] It should be noted that the elastic force of the stroke-absorbing elastic element 630 is greater than that of the synchronous elastic element 530, and the elastic force of the synchronous elastic element 530 is greater than that of the reset elastic element of the ground lock mechanism. This arrangement ensures that the first support part 200 and the second support part 300 operate first, followed by the synchronous elastic element 530, and finally the stroke-absorbing elastic element 630.

[0043] See Figure 1 , Figure 2 and Figure 3 As shown, in the optional embodiment, a first stepped channel is provided inside the stroke absorption pad 640, and one end of the first pull wire 110 passes through the first stepped channel.

[0044] The first pull wire 110 has a first plug at one end. The first plug is inserted into the stroke absorption pad 640 from the end with the larger inner diameter of the first stepped channel, so that the first pull wire 110 can pull the stroke absorption pad 640 toward the stroke absorption elastic member 630.

[0045] Specifically, one end of the first pull line 110 is inserted into the first step channel, and the first plug at one end of the first pull line 110 is moved into the first step channel, so that the first pull line 110 can pull the stroke absorption pad 640 to move.

[0046] It should be noted that the splitter 400, the synchronization adjustment component 500, and the stroke absorption component 600 are all fixed to the seat frame.

[0047] This embodiment provides an automotive seat, including a cable structure for dual-lock synchronous adaptive control. Specifically, the automotive seat provided in this embodiment has the advantages described above compared to the prior art, which will not be repeated here.

[0048] 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 pull-wire structure for dual-lock synchronous adaptive control, characterized in that, include: The drive end (100), the first support part (200), the second support part (300), the splitter (400), and the synchronization adjustment component (500). The drive end (100) is connected to the splitter (400) via a first pull wire (110), the first support part (200) is connected to the splitter (400) via a second pull wire (210), and the second support part (300) is connected to the splitter (400) via a third pull wire (310). The synchronization adjustment component (500) is threaded through the third pull wire (310). The synchronization adjustment component (500) includes a synchronization housing (510), a synchronization pressure block (520), and a synchronization elastic element (530). The synchronization pressure block (520) is slidably inserted into the synchronization housing (510). The synchronization elastic element (530) is disposed between the synchronization pressure block (520) and the synchronization housing (510). The synchronization elastic element (530) is located between the synchronization pressure block (520) and the second support part (300). The synchronization pressure block (520) is loosely fitted on the third pull wire (310). A drive tube (320) is sleeved on the third pull wire (310). One end of the drive tube (320) is fixedly connected to the splitter (400), and the other end is fixedly connected to the synchronous pressure block (520) so that the drive tube (320) can drive the synchronous pressure block (520) to press the synchronous elastic member (530).

2. The drawstring structure for dual-lock synchronous adaptive control according to claim 1, characterized in that, The synchronizing pressure block (520) and the synchronizing elastic element (530) are distributed along the extending direction of the synchronizing housing (510); One end of the synchronizing block (520) is provided with a limiting ring (521), and the other end can extend out of the synchronizing housing (510). The end of the synchronizing block (520) extending out of the synchronizing housing (510) is fixedly connected to the drive cable (320).

3. The drawstring structure for dual-lock synchronous adaptive control according to claim 2, characterized in that, The synchronous pressure block (520) has a threading channel for the third pull wire (310) to pass through.

4. The pull-wire structure for dual-lock synchronous adaptive control according to claim 1, characterized in that, The synchronous elastic element (530) is a helical spring.

5. The pull-wire structure for dual-lock synchronous adaptive control according to claim 1, characterized in that, The first exposed length of the second pull line (210) relative to the first support part (200) is greater than the second exposed length of the third pull line (310) relative to the second support part (300), so that the second support part (300) reaches the storage state before the first support part (200).

6. The pull-wire structure for dual-lock synchronous adaptive control according to claim 1, characterized in that, It also includes a stroke absorption component (600), the drive end (100) is connected to the stroke absorption component (600) via a first pull wire (110), and the stroke absorption component (600) is connected to the splitter (400); The stroke absorption assembly (600) includes a stroke absorption housing (610), a stroke absorption sliding sleeve (620), a stroke absorption elastic element (630), and a stroke absorption pad (640). The stroke-absorbing housing (610) is fixedly mounted on the seat frame. The stroke-absorbing sleeve (620) is slidably mounted inside the stroke-absorbing housing (610). The stroke-absorbing pad (640) is slidably mounted inside the stroke-absorbing sleeve (620). The first pull cable (110) is located between the stroke-absorbing pad (640) and the stroke-absorbing sleeve (620). When the first pull cable (110) is pulled by the drive end (100), the stroke-absorbing pad (640) can move toward the stroke-absorbing elastic member (630).

7. The drawstring structure for dual-lock synchronous adaptive control according to claim 6, characterized in that, The elastic force of the stroke-absorbing elastic element (630) is greater than the elastic force of the synchronous elastic element (530).

8. The pull-wire structure for dual-lock synchronous adaptive control according to claim 6, characterized in that, The stroke absorption pad (640) has a first stepped channel, and one end of the first pull wire (110) passes through the first stepped channel.

9. The pull-wire structure for dual-lock synchronous adaptive control according to claim 8, characterized in that, One end of the first pull wire (110) has a first plug, which is inserted into the stroke absorption pad (640) from the end with the larger inner diameter of the first stepped channel, so that the first pull wire (110) can pull the stroke absorption pad (640) toward the stroke absorption elastic member (630).

10. A car seat, characterized in that, Includes the draw wire structure for dual-lock synchronous adaptive control as described in any one of claims 1-9.

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