A one-button multi-control seat adjustment structure and a child safety seat

Abstract

This invention relates to the field of automotive safety products, and discloses a one-button multi-control seat adjustment structure and a child safety seat, including a base, a seat back, a rotating disc, and a sliding disc. The rotating disc is rotatably connected to the base, and the sliding disc has a connecting frame that is slidably connected to the seat back. It also includes a handle assembly, an angle stop component, a side-slide stop component, and a rotation stop component, all of which are linked to the handle assembly. This invention links the angle stop component, side-slide stop component, and rotation stop component to the handle assembly. A single operation of the handle assembly simultaneously moves the angle stop component, side-slide stop component, and rotation stop component, causing them to disengage from the third limiting part of the connecting frame, the first limiting part of the sliding disc, and the second limiting part of the base, respectively. This achieves one-button simultaneous unlocking of the three adjustment functions, making operation extremely simple and efficient, and reducing accidental activation.

Description

Technical Field

[0001] This invention relates to the field of automotive safety products technology, and more specifically, to a one-button multi-control seat adjustment structure and a child safety seat. Background Technology

[0002] Child safety seats are key equipment to ensure the safety of children in vehicles. Their core design is to restrain children in the seat through the restraint system when a collision occurs, and to effectively absorb and disperse the impact energy. With the development of technology and the improvement of user needs, high-end child safety seats have successively appeared with the following independent adjustment functions: (1) seat back rotation function: to facilitate the installation of the seat in the forward or rearward direction to adapt to children of different ages; (2) seat back angle adjustment function: to provide multiple tilt adjustment, so that children can switch between different tilt positions; (3) seat back side sliding function: the seat can slide to the side of the car door, making it easier for parents to place children in the seat.

[0003] However, these adjustment modules are mostly independently designed and need to be operated separately through different handles or buttons, which makes it cumbersome for parents to operate in the car, and children are prone to accidentally touching them. In addition, it is difficult to quickly adjust them in an emergency, resulting in insufficient overall convenience. Summary of the Invention

[0004] To address at least one of the aforementioned problems, the present invention first provides a one-button multi-control seat adjustment structure, comprising a base, a backrest, a rotating disc, and a slide plate slidably connected to the rotating disc. The rotating disc is rotatably connected to the base, and the slide plate is provided with a connecting frame slidably connected to the backrest. The structure also includes a handle assembly, an angle stop, a side-slide stop, and a rotation stop. The angle stop, side-slide stop, and rotation stop are all linked to the handle assembly. The side-slide stop and rotation stop are both movably connected to the rotating disc. The angle stop is movably connected to the connecting frame. The slide plate is provided with a first limiting portion suitable for locking with the side-slide stop. The base is provided with a second limiting portion suitable for locking with the rotation stop. The connecting frame is provided with a third limiting portion suitable for locking with the angle stop.

[0005] When the handle assembly is pulled, the handle assembly simultaneously moves the side-sliding stop, the rotation stop, and the angle stop, so that the side-sliding stop disengages from the first limiting part, the rotation stop disengages from the second limiting part, and the angle stop disengages from the third limiting part, thereby realizing the simultaneous unlocking of the chair back side-sliding, rotation, and angle adjustment operations.

[0006] Optionally, the handle assembly includes a pulling member, a handle base and a movable handle connected to each other, the handle base being mounted on the chair back, and the angle stop being movably mounted between the handle base and the movable handle; it also includes an unlocking drive, with both ends of the pulling member connected to the movable handle and the unlocking drive, and the side-sliding stop and the rotating stop both connected to the unlocking drive; when the movable handle is pulled, the movable handle moves the angle stop to disengage from the third limiting part, and simultaneously the movable handle moves the unlocking drive by pulling the pulling member, and the unlocking drive simultaneously moves the rotating stop and the side-sliding stop, so that the rotating stop disengages from the second limiting part and the side-sliding stop disengages from the first limiting part; when the movable handle is released, the pulling force of the pulling member on the unlocking drive is removed so that the unlocking drive resets.

[0007] Optionally, the angle stop component is a stop pin, which has a horizontal pin and a vertical shaft connected perpendicularly to each other. The handle base has a horizontal groove that is slidably connected to the horizontal pin, and the movable handle has an inclined groove that is slidably connected to the vertical shaft. The third limiting part is a plurality of stop holes provided on the connecting frame. The plurality of stop holes are adapted to engage with the horizontal pin to limit the position of the chair back angle adjustment. When the movable handle is pulled, the vertical shaft is driven to move in the inclined groove, so that the horizontal pin moves inward and retracts in the horizontal groove, thereby disengaging the stop pin from the stop hole to unlock the chair back angle adjustment.

[0008] The handle base is also equipped with a third reset component, the two ends of which are connected to the movable handle and the handle base respectively; when the movable handle is released, the movable handle moves under the force of the third reset component so as to drive the gear pin to lock into the gear hole again.

[0009] Optionally, the rotary disk is provided with an upward-opening mounting groove, the side-sliding stop is movably mounted in the mounting groove, and a first reset member is also installed in the mounting groove, the upper and lower ends of the first reset member being connected to the side-sliding stop and the mounting groove respectively;

[0010] The unlocking drive is slidably connected to the side sliding stop. When the movable handle is pulled, the pulling member drives the unlocking drive to move, and the unlocking drive can push the side sliding stop to move down to disengage from the first limiting part. When the movable handle is released, the unlocking drive resets, and the side sliding stop moves up under the force of the first reset member so as to lock and cooperate with the first limiting part again.

[0011] Optionally, the unlocking drive is provided with an extension arm, the lower end face of the extension arm is provided with an inclined surface, and the side sliding stop is provided with an abutment groove for the extension arm to pass through along the length direction. The inclined surface is adapted to abut against the abutment groove during the unlocking process of the unlocking drive, so as to push the side sliding stop to move down and disengage from the first limiting part.

[0012] Optionally, the first limiting part is a triangular protrusion located at the bottom of the sliding plate. The triangular protrusion has a right-angled side surface. When the sliding plate is locked with the rotating plate, the side sliding stop abuts against the right-angled side surface. There are two triangular protrusions, which are spaced apart along the sliding direction of the sliding plate, and the right-angled sides of the two triangular protrusions are opposite to each other. The sliding plate has an initial state and a sliding state. When it is in the initial state, the side sliding stop abuts against the right-angled side surface of the triangular protrusion that is forward in the sliding direction. When it is in the sliding state, the side sliding stop abuts against the right-angled side surface of the triangular protrusion that is rearward in the sliding direction.

[0013] Optionally, the triangular protrusion also has a beveled surface, and the beveled surfaces of the two triangular protrusions are arranged opposite to each other;

[0014] The side wall of the sliding plate is provided with anti-reverse protrusions, and the rotating plate is provided with a slide rail that is slidably connected to the sliding plate. The side wall of the slide rail is provided with a first protrusion and a second protrusion at intervals. When the side sliding stop and the forward triangular protrusion in the sliding direction are unlocked in the initial state, the anti-reverse protrusion and the first protrusion cooperate to limit the sliding plate to prevent it from moving back to the initial state. When the side sliding stop and the rearward triangular protrusion in the sliding direction are unlocked in the sliding state, the anti-reverse protrusion and the second protrusion cooperate to limit the sliding plate to prevent it from moving back to the sliding state.

[0015] Optionally, it further includes a second reset member, the two ends of which are respectively connected to the unlocking drive member and the rotating disk; the second limiting part is a plurality of slots circumferentially disposed on the base, when the rotating disk is locked to the base, one of the plurality of slots locks into the rotating stop member; when the movable handle is pulled, the pulling member drives the unlocking drive member to move, and the unlocking drive member drives the rotating stop member to move to disengage from the slot; when the movable handle is released, when the unlocking drive member is radially reset under the force of the second reset member, the unlocking drive member simultaneously drives the rotating stop member to move radially outward so as to lock into the slot again.

[0016] Optionally, the rotary disk is provided with a guide groove for the radial movement of the rotary stop component, the rotary stop component is provided with a screw post and a stop block that mates with the bottom surface of the guide groove, the unlocking drive component is provided with a through hole that mates with the screw post; it also includes a screw and a pressure plate connected to the pulling component, the pressure plate is installed on the upper surface of the through hole, and the screw passes through the pressure plate and is tightened with the screw post.

[0017] Compared to existing technologies, the one-button multi-control seat adjustment structure of this invention links the angle stop, side slide stop, and rotation stop components with the handle assembly. A single operation of the handle assembly simultaneously moves these components, disengaging them from the third limiting part of the connecting frame, the first limiting part of the sliding plate, and the second limiting part of the base, respectively. This achieves one-button simultaneous unlocking of the three adjustment functions. In the unlocked state, the user can continuously adjust the seat back angle relative to the connecting frame, slide the sliding plate relative to the rotation plate, and rotate the rotation plate relative to the base in one smooth motion, making operation extremely simple and efficient. Integrating the control of all adjustment functions into a single handle assembly reduces the number of independent operating points that children might accidentally touch, significantly lowering the risk of the seat back being accidentally unlocked while driving, thus ensuring high safety. The locking relationships between the angle stop component and the connecting frame, the side slide stop component and the sliding plate, and the rotation stop component and the base are clearly defined. The centralized drive of the handle assembly simplifies the internal structure and improves the overall reliability of the system.

[0018] In addition, the present invention provides a child safety seat, including the one-button multi-control seat adjustment structure described above.

[0019] Compared to existing technologies, the child safety seat described in this invention has the same advantages as the aforementioned one-button multi-control seat adjustment structure, which will not be repeated here. Attached Figure Description

[0020] Figure 1 A partial explosion of a child safety seat according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 2 A partial explosion of a child safety seat according to an embodiment of the present invention. Figure 2 ;

[0022] Figure 3 This is a partial exploded view of the one-button multi-control seat adjustment structure according to an embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional view of a child safety seat in its initial state according to an embodiment of the present invention;

[0024] Figure 5This is a cross-sectional view of the one-button multi-control seat adjustment structure in its initial state according to an embodiment of the present invention;

[0025] Figure 6 for Figure 5 Enlarged view of section A;

[0026] Figure 7 This is a cross-sectional view of a child safety seat in its initial unlocked state, according to an embodiment of the present invention.

[0027] Figure 8 This is a cross-sectional view of the one-button multi-control seat adjustment structure of this invention when it is first unlocked in its initial state.

[0028] Figure 9 This is a cross-sectional view of the one-button multi-control seat adjustment structure of this invention after it has been unlocked in its initial state and the side sliding gear has passed the forward triangular protrusion.

[0029] Figure 10 This is a cross-sectional view of the one-button multi-control seat adjustment structure according to an embodiment of the present invention, showing the side sliding gear moving to abut against the inclined surface of the rear triangular protrusion.

[0030] Figure 11 This is a cross-sectional view of the one-button multi-control seat adjustment structure of this invention when it is locked in the slid-out state;

[0031] Figure 12 This is an assembly structure diagram of the sliding disk and the rotating disk in the initial state of an embodiment of the present invention;

[0032] Figure 13 This is a cross-sectional view of the assembly structure of the sliding disk and the rotating disk in the initial state of an embodiment of the present invention;

[0033] Figure 14 This is an assembly structure diagram of the sliding disk and the rotating disk in the sliding state according to an embodiment of the present invention;

[0034] Figure 15 This is a cross-sectional view of the assembly structure of the sliding disk and the rotating disk in the sliding state according to an embodiment of the present invention;

[0035] Figure 16 This is a partial structural diagram of the one-button multi-control seat adjustment structure according to an embodiment of the present invention;

[0036] Figure 17 This is a structural diagram of a child safety seat in the lateral, non-slid-out state according to an embodiment of the present invention;

[0037] Figure 18 This is a structural diagram of a child safety seat in the slid-out state according to an embodiment of the present invention;

[0038] Figure 19This is a structural diagram of the handle assembly in an embodiment of the present invention when the angle stop component is locked;

[0039] Figure 20 This is a structural diagram of the handle assembly in an embodiment of the present invention when the angle stop is unlocked.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Base; 11. Second limiting part; 2. Rotating disk; 21. Mounting slot; 22. Slide rail; 221. First protrusion; 222. Second protrusion; 23. Guide groove; 3. Sliding disk; 31. First limiting part; 311. Right angle side; 312. Beveled side; 32. Anti-reverse protrusion; 33. Connecting bracket; 331. Third limiting part; 4. Chair back; 5. Unlocking drive component; 51. Extension arm; 511. Beveled side Surface; 52, Through hole; 6, Side sliding stop; 61, Abutment groove; 62, First reset component; 7, Rotary stop component; 71, Screw post; 72, Abutment block; 73, Second reset component; 8, Handle assembly; 81, Pressure plate; 82, Pulling component; 83, Handle base; 831, Horizontal groove; 84, Movable handle; 841, Inclined groove; 85, Third reset component; 9, Angle stop component; 91, Horizontal pin; 92, Vertical shaft. Detailed Implementation

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] In the description of this invention, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0044] 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 at least one of that feature.

[0045] This invention provides a one-button multi-control seat adjustment structure, combined with Figures 1 to 20As shown, the chair includes a base 1, a backrest 4, a rotating disk 2, and a sliding disk 3 slidably connected to the rotating disk 2. The rotating disk 2 is rotatably connected to the base 1, and the sliding disk 3 is provided with a connecting frame 33 slidably connected to the backrest 4. It also includes a handle assembly 8, an angle stop 9, a side slide stop 6, and a rotation stop 7. The angle stop 9, the side slide stop 6, and the rotation stop 7 are all linked to the handle assembly 8. The side slide stop 6 and the rotation stop 7 are both movably connected to the rotating disk 2. The angle stop 9 is movably connected to the connecting frame 33. The sliding disk 3 is provided with a locking mechanism suitable for engaging with the side slide stop 6. The base 1 is provided with a first limiting part 31 for locking with the rotating stop 7, and the connecting frame 33 is provided with a third limiting part 331 for locking with the angle stop 9. When the handle assembly 8 is pulled, the handle assembly 8 simultaneously drives the side sliding stop 6, the rotating stop 7 and the angle stop 9 to move, so that the side sliding stop 6 disengages from the first limiting part 31, the rotating stop 7 disengages from the second limiting part 11 and the angle stop 9 disengages from the third limiting part 331, thereby realizing the simultaneous unlocking of the side sliding, rotation and angle adjustment of the chair back 4.

[0046] The base 1 is fixedly installed on the car seat and is the foundation of the entire structure. The rotating plate 2 is connected to the base 1 in the horizontal plane through bearings, cylindrical bosses or similar structures to realize the rotation function of the seat. The sliding plate 3 is connected to the rotating plate 2 in a lateral (usually towards the car door) sliding manner through a linear guide rail or slide groove to realize the side sliding function of the seat. The sliding plate 3 is finally directly connected to the backrest 4 that carries the child. The connecting frame 33 is fixed on the sliding plate 3 and extends upward to slide with the backrest 4. It is usually connected to the connecting shaft through an arc-shaped slide groove so that the backrest 4 can be tilted relative to the connecting frame 33. The connecting frame 33 is provided with a third limiting part 331 (such as a multi-row toothed structure or multiple hole-like structures) to lock different tilt angles.

[0047] The handle assembly 8 is the user's only direct operating interface, typically an ergonomically designed, easy-to-grip pull ring or handle, mounted on the chair back 4 or base 1; the rotation stop 7 can be a movable locking pin or pawl, which, in the locked state, is inserted into the second limiting part 11 (multiple positioning holes or grooves) on the base 1 under the action of spring force, locking the rotating disk 2 relative to the base 1 to prevent accidental rotation; the side-sliding stop 6 can be another movable locking pin or pawl, which, in the locked state, is inserted into the first limiting part 31 (positioning hole, groove, or protrusion) on the sliding disk 3, locking the sliding disk 3 relative to the rotating disk 2 to prevent accidental side-sliding; the angle stop 9 cooperates with the third limiting part 331 on the connecting frame 33, and is normally inserted into the third limiting part 331 to prevent the angle of the chair back 4 from changing.

[0048] The angle stop 9, the side slide stop 6, and the rotation stop 7 can be mechanically linked with the handle assembly 8 through a cable, linkage, gear, or cam system. When the user pulls the handle assembly 8, the action is transmitted to the three stop components simultaneously and at the same time through the linkage mechanism.

[0049] like Figures 4 to 9 As shown, when the user pulls the handle assembly 8 to unlock, driven by the linkage mechanism, the rotation stop 7 is pulled out from the second limiting part 11 of the base 1, the side sliding stop 6 is pulled out from the first limiting part 31 of the sliding plate 3, and the angle stop 9 is pulled out from the third limiting part 331 of the connecting frame 33. At this point, the three degrees of freedom of the chair back 4—rotation, side sliding, and angle tilt—are simultaneously unlocked. Figure 10 As shown, with the chair back 4 in a pullable state, the user can either hold onto or release the handle assembly 8. Parents can gently push the chair back 4 to complete the combined actions of side-moving out of the cabin, rotating the orientation, and adjusting the tilt of the chair back 4 in one go, until the desired overall position is reached. Figure 11 As shown, once in position, the parent releases the handle assembly 8. Under the action of the return spring (usually built into each stop component or linkage mechanism), the angle stop component 9, the side slide stop component 6, and the rotation stop component 7 automatically spring back. As long as the current overall position of the chair back 4 aligns the side slide stop component 6, the rotation stop component 7, and the angle stop component 9 with the corresponding first limit part 31, second limit part 11, and third limit part 331, they will automatically re-lock and securely fix the chair back 4 in the new state.

[0050] In this embodiment, the one-button multi-control seat adjustment structure links the angle stop 9, the side slide stop 6, and the rotation stop 7 to the handle assembly 8. A single operation of the handle assembly 8 simultaneously moves the angle stop 9, the side slide stop 6, and the rotation stop 7, causing them to disengage from the third limiting part 331 of the connecting frame 33, the first limiting part 31 of the sliding plate 3, and the second limiting part 11 of the base 1, respectively. This achieves one-button simultaneous unlocking of the three adjustment functions. In the unlocked state, the user can continuously adjust the angle of the chair back 4 relative to the connecting frame 33 in one operation. The adjustment, sliding of the sliding plate 3 relative to the rotating plate 2, and the rotation of the rotating plate 2 relative to the base 1 are extremely simple and efficient to operate. The control of all adjustment functions is integrated into a single handle assembly 8, which reduces the number of independent operation points that children may accidentally touch from the source, significantly reducing the risk of the seat back 4 being accidentally unlocked while driving, thus ensuring high safety. The locking relationship between the angle stop 9 and the connecting frame 33, the side sliding stop 6 and the sliding plate 3, and the rotation stop 7 and the base 1 is clear. The centralized drive of the handle assembly 8 simplifies the internal structure and improves the overall reliability of the system.

[0051] Optionally, combined Figure 1 , Figure 2 , Figure 4 , Figure 19 , Figure 20 As shown, the handle assembly 8 includes a pulling member 82, a handle base 83 and a movable handle 84 that are movably connected to each other. The handle base 83 is mounted on the chair back 4, and the angle stop member 9 is movably mounted between the handle base 83 and the movable handle 84. It also includes an unlocking drive member 5. The two ends of the pulling member 82 are respectively connected to the movable handle 84 and the unlocking drive member 5. The side-sliding stop member 6 and the rotation stop member 7 are both connected to the unlocking drive member 5. When the movable handle 84 is pulled, the movable handle 84... The angle stop 9 is moved to disengage from the third limiting part 331. At the same time, the movable handle 84 moves the unlocking drive 5 by pulling the pulling member 82. The unlocking drive 5 simultaneously moves the rotating stop 7 and the side sliding stop 6, so that the rotating stop 7 disengages from the second limiting part 11 and the side sliding stop 6 disengages from the first limiting part 31. When the movable handle 84 is released, the pulling force of the pulling member 82 on the unlocking drive 5 is removed so that the unlocking drive 5 resets.

[0052] The handle base 83 is fixedly installed on the backrest 4, serving as the static foundation and support frame of the entire operating module. The movable handle 84 is a handle or pull ring, which is the part directly operated by the user. It is movably connected to the handle base 83 through mechanisms such as pivots and slides (such as hinges or sliding connections), allowing it to be displaced or rotated relative to the base by the user applying force. The angle stop component 9 is designed to be movably installed between the handle base 83 and the movable handle 84, so that the movement (such as rotation or translation) of the movable handle 84 will directly act on the angle stop component 9 through mechanical contact (such as pushing, pulling or pressing), causing it to displace. This is the first-level direct drive path, used to control the locking and unlocking of the backrest 4 angle adjustment.

[0053] The unlocking drive component 5 is a synchronous transmission component, typically a movable slider, lever, or turntable, with its own reset function, such as a connected reset spring. The pulling component 82 is a flexible or rigid force transmission element (such as a cable, linkage, or steel cable), one end of which is connected to the movable handle 84, and the other end to the unlocking drive component 5. When the pulling component 82 is rigid, it can synchronously drive the unlocking drive component 5 to move along with the movable handle 84. The unlocking drive component 5 can be reset even without a reset spring. When the rope is flexible, a reset spring is needed to reset the unlocking drive 5, preferably a steel wire rope. Therefore, in addition to directly driving the angle stop 9, the movement of the movable handle 84 will also transmit power to the unlocking drive 5 through the pulling member 82, causing it to move. The side-sliding stop 6 and the rotation stop 7 are both connected to the unlocking drive 5. The movement of the unlocking drive 5 will simultaneously and equally drive the side-sliding stop 6 and the rotation stop 7 to move. This is the second-level indirect drive path, used to synchronously control the locking and unlocking of the rotation and side-sliding functions.

[0054] When the user applies a single operating force (such as pulling upwards or pulling backwards) to the movable handle 84, the movable handle 84 directly pushes or pulls the angle stop 9 along its movement trajectory, causing it to disengage from the third limiting part 331 of the connecting frame 33, thus completing the angle adjustment unlocking. At the same time, the movement of the movable handle 84 pulls the unlocking drive 5 through the pulling part 82 (such as a cable). During the movement, the unlocking drive 5 synchronously drives the rotation stop 7 and the side sliding stop 6 connected to it, causing them to disengage from the second limiting part 11 of the base 1 and the first limiting part 31 of the sliding plate 3, respectively, thus completing the rotation unlocking and side sliding unlocking. The user can then adjust the angle of the seat back 4, rotate it, and slide it to the side of the car door to the most convenient position for holding and placing the child.

[0055] When the user releases the movable handle 84, the pulling force applied to the pulling member 82 is removed, and the unlocking drive member 5 automatically returns to its original position under the action of its reset device (such as a spring), driving the rotary gear member 7 and the side sliding gear member 6 to reset, and allowing the angle gear member 9 to return to its original position under its own reset force or gravity. During the return process, once the three gear members are aligned with their respective limit parts, they automatically relock to ensure driving safety.

[0056] In this embodiment, by using the movable handle 84 as both the direct drive source for the angle stop component 9 and the traction end of the pull component 82, the pull component 82 drives the unlocking drive component 5, which in turn drives the rotation stop component 7 and the side-sliding stop component 6 in sync. This forms a linkage path of first-level direct drive for angle unlocking and second-level centralized drive for rotation and side-sliding unlocking. The structure is simple and reliable, ensuring a high degree of synchronization and reliability of the three stop components' actions, truly achieving global unlocking under a single operation, with high efficiency. The angle stop component 9 is close to the chair back 4 and is directly driven by the movable handle 84, resulting in the shortest path, direct response, and clear feel. The rotation stop component 7 and the side-sliding stop component 6, located at the bottom of the chair back 4, transmit power remotely to the unlocking drive component 5 via the pull component 82 for centralized drive. This cleverly solves the problem of spatial span between the operating end and the remote locking mechanism, making the overall mechanical layout more reasonable and compact.

[0057] Optionally, combined Figure 1 , Figure 2 , Figure 19 , Figure 20 As shown, the angle stop 9 is a stop pin, which has a horizontal pin 91 and a vertical shaft 92 that are perpendicularly connected to each other. The handle base 83 has a horizontal groove 831 that is slidably connected to the horizontal pin 91, and the movable handle 84 has an inclined groove 841 that is slidably connected to the vertical shaft 92. The third limiting part 331 is a plurality of stop holes provided in the connecting frame 33. The plurality of stop holes are adapted to cooperate with the horizontal pin 91 to limit the position of the chair back 4 angle adjustment. When the movable handle 84 is pulled, the vertical shaft 92 is driven. The horizontal pin 91 moves inward within the inclined groove 841, causing it to retract inward within the horizontal groove 831, thereby disengaging the shift pin from the shift hole to unlock the seat back angle adjustment. The handle base 83 is also equipped with a third reset member 85, the two ends of which are connected to the movable handle 84 and the handle base 83, respectively. When the movable handle 84 is released, it moves under the force of the third reset member 85 to engage the shift pin with the shift hole again.

[0058] The shift pin consists of a horizontal pin 91 and a vertical shaft 92 that are perpendicularly connected to each other, and can be figuratively understood as a rigid "T"-shaped component. The handle base 83 has a horizontal groove 831, within which the horizontal pin 91 of the shift pin slides horizontally, strictly confining the horizontal pin 91 within the trajectory of the groove 831, allowing only horizontal linear reciprocating motion. Its function is to ultimately insert into or withdraw from the shift hole on the connecting frame 33. The movable handle 84 has an inclined groove 841, within which the vertical shaft 92 of the shift pin slides vertically. The direction of the inclined groove 841 is not parallel to the horizontal groove 831, but typically forms a certain angle with the horizontal direction. There are two shift pins, each corresponding to two inclined grooves 841, which are arranged in a "V" shape.

[0059] like Figure 20 As shown, when the user pulls the movable handle 84, the movable handle 84 is displaced relative to the handle base 83. At this time, the inclined groove 841 fixed on the movable handle 84 moves accordingly. Since the vertical shaft 92 is constrained in the moving inclined groove 841, and the horizontal pin 91 is constrained in the stationary horizontal groove 831, the vertical shaft 92 is forced to slide along the trajectory of the inclined groove 841. Through the rigid connection between the vertical shaft 92 and the horizontal pin 91, the horizontal pin 91 is finally forced to make a precise linear movement in the horizontal groove 831. When the movable handle 84 is pulled in the unlocking direction, through the above-mentioned groove and rail cooperation, the horizontal pin 91 is driven to move inward (i.e., in the retraction direction) in the horizontal groove 831, so that it completely exits from the corresponding stop hole on the connecting bracket 33, thereby unlocking the angle adjustment of the chair back 4.

[0060] like Figure 19 As shown, the third reset element 85 is usually a compression spring. When the user releases the movable handle 84, the elastic potential energy stored in the third reset element 85 is released, driving the movable handle 84 to automatically return to the initial position. The reset movement of the movable handle 84, through the cooperation between the inclined groove 841 and the vertical shaft 92, acts in the opposite direction, pushing the horizontal pin 91 to move outward (i.e., in the extension direction) within the horizontal groove 831. As long as the angle of the chair back 4 has been adjusted to the correct position, aligning a certain stop hole with the horizontal pin 91, the horizontal pin 91 will automatically spring into the stop hole under the spring force of the third reset element 85, completing the re-locking of the angle.

[0061] In this embodiment, the locking motion is strictly constrained to a horizontal linear motion by the sliding connection between the horizontal pin 91 of the stop pin and the horizontal groove 831 on the handle base 83. Combined with the multiple precisely arranged stop holes on the connecting frame 33, the insertion and withdrawal paths of the horizontal pin 91 are precise and without deviation, ensuring high repeatability and absolute stability of the angle locking, effectively resisting collision impacts. The inclined groove 841 on the movable handle 84 cooperates with the vertical axis 92 of the stop pin, efficiently and directly converting the complex motion of the movable handle 84 into the horizontal linear motion required by the horizontal pin 91. This combination of inclined and horizontal movement... The dual-groove drive mechanism has an extremely simple and compact structure with few parts. It achieves reliable conversion of motion modes within a limited space, with high mechanical efficiency and low failure rate. During operation, the user overcomes the spring force of the third reset piece 85 by using the movable handle 84 and drives the vertical shaft 92 to slide in the inclined groove 841, which can obtain a clear sense of force change and stroke. When the horizontal pin 91 is snapped into the gear hole under the action of the reset spring, it will produce clear auditory and tactile feedback, which can confirm that the backrest angle 4 is safely locked without visual inspection, thus improving the safety and convenience of operation.

[0062] Optionally, combined Figures 2 to 18 As shown, the rotating disk 2 has an upward-opening mounting groove 21. The side-sliding stop 6 is movably mounted in the mounting groove 21. A first reset member 62 is also installed in the mounting groove 21. The upper and lower ends of the first reset member 62 are respectively connected to the side-sliding stop 6 and the mounting groove 21. The unlocking drive member 5 is slidably connected to the side-sliding stop 6. When the movable handle 84 is pulled, the pulling member 82 drives the unlocking drive member 5 to move. The unlocking drive member 5 can push the side-sliding stop 6 downward to disengage from the first limiting part 31. When the movable handle 84 is released, the unlocking drive member 5 resets, and the side-sliding stop 6 moves upward under the force of the first reset member 62 to lock and engage with the first limiting part 31 again.

[0063] The mounting groove 21 is a specific groove or cavity with an upward opening on the rotating disk 2. It serves not only as a receiving space but also as a precision guide rail for the side sliding stop 6. The side sliding stop 6 is usually a cylindrical or square prism-shaped locking pin, which is constrained within the mounting groove 21 and can only slide vertically up and down, without swaying or tilting. This ensures its precise alignment and engagement with the first limiting part 31 on the sliding disk 3. The sliding connection between the unlocking drive 5 and the side sliding stop 6 means that the connection between the unlocking drive 5 and the side sliding stop 6 is not rigidly fixed, but rather a relatively sliding connection. For example, one end of the unlocking drive 5 has a bevel 511 or a wedge-shaped block that abuts against the groove or plane on the side of the side sliding stop 6.

[0064] like Figure 5 , Figure 6, Figure 8 As shown, when the movable handle 84 is pulled, and the pulling member 82 drives the unlocking drive member 5 to move, through this special sliding connection, the horizontal movement of the unlocking drive member 5 is converted into a vertically downward force, acting on the side-sliding stop member 6, pushing it downward along the mounting groove 21, thereby causing its upper end to disengage from the first limiting part 31 of the sliding plate 3, releasing the side-sliding lock. The first reset member 62 is usually a compression spring, the upper and lower ends of which abut against the lower surface (or internal boss) of the side-sliding stop member 6 and the bottom of the mounting groove 21, respectively. Figure 9 , Figure 10 , Figure 11 As shown, when the user releases the unlocking drive 5 and the driving force disappears, the compressed first reset member 62 (spring) will release its elastic force and push the side sliding stop member 6 upward, so that it automatically and stably returns to the initial upper position. At this time, if the sliding plate 3 has moved into place (its first limiting part 31 is aligned with the side sliding stop member 6), the stop member will automatically spring up and lock under the action of the spring force.

[0065] In this embodiment, when locked, the side-sliding stop 6 moves vertically upward to engage with the first limiting part 31, effectively resisting multi-directional impact forces generated during vehicle movement, resulting in extremely high locking reliability. When unlocked, it vertically disengages from the first limiting part 31, making it less prone to jamming. By utilizing the sliding connection between the unlocking drive 5 and the side-sliding stop 6, the lateral driving force is converted into a vertical downward thrust that drives the side-sliding stop 6, making the action less strenuous. This efficient spatial integration of horizontal operation and vertical locking motion reduces structural complexity and facilitates layout within a limited space. When the side-sliding stop 6 accurately engages with the first limiting part 31 under the spring force of the first reset part 62, it produces obvious tactile and audible feedback (such as a "click"), clearly conveying the locking signal to the user and enhancing the user's sense of security. In addition, the continuous spring preload ensures that the side-sliding stop 6 and the first limiting part 31 remain in close contact at all times, effectively avoiding the risk of locking loosening due to vehicle vibration.

[0066] Optionally, combined Figure 3 , Figure 6 As shown, the unlocking drive 5 is provided with an extension arm 51, and the lower end face of the extension arm 51 is provided with an inclined surface 511. The side sliding stop 6 is provided with an abutment groove 61 for the extension arm 51 to pass through in the length direction. The inclined surface 511 is adapted to abut against the abutment groove 61 during the unlocking process of the unlocking drive 5, so as to push the side sliding stop 6 to move down and disengage from the first limiting part 31.

[0067] The extension arm 51 is an arm-shaped structure extending from the main body of the unlocking drive 5, possessing a certain length and strength. The inclined surface 511 is an inclined plane machined into the lower end face of the extension arm 51. A long, narrow hole or groove, i.e., an abutment groove 61, is provided on the side or inside of the side-sliding stop 6 to allow the extension arm 51 to pass through along its length. The abutment groove 61 allows the extension arm 51 a certain amount of movement in the vertical direction, but constrains it in the horizontal direction. Under the action of the first reset member 62, the side-sliding stop 6 is in the locked position. At this time, the extension arm 51 of the unlocking drive 5 is inserted into the abutment groove 61, and the higher end of its inclined surface 511 may maintain a certain gap or slight contact with the upper edge of the abutment groove 61.

[0068] like Figure 6 , Figure 8 As shown, when the pulling member 82 pulls the unlocking drive member 5 to move horizontally, the extension arm 51 is displaced horizontally. As the extension arm 51 moves horizontally, the inclined surface 511 of its lower end face begins to contact the upper side wall of the abutment groove 61 and slides relative to it. Since the inclined surface 511 is inclined, every time the extension arm 51 moves horizontally a certain distance, depending on the angle of the inclined surface 511, it will force the side sliding stop member 6, which is in contact with the inclined surface 511, to produce a vertical downward displacement. This process continues, and the inclined surface 511 continuously applies pressure to the abutment groove 61, converting the horizontal pulling force into a vertical downward thrust, forcing the entire side sliding stop member 6 to overcome the elastic force of the first reset member 62 and slide downward along the mounting groove 21 until its upper end is completely disengaged from the first limiting part 31 of the sliding plate 3. Figure 9 , Figure 10 As shown, when the user releases the movable handle 84, the unlocking drive 5 returns to its horizontal position under the action of its own reset mechanism. At this time, the extension arm 51 moves back, the pressure between the inclined surface 511 and the abutment groove 61 is released, and the side sliding stop 6 moves up and resets quickly under the elastic force of the first reset component 62. During this upward movement, the abutment groove 61 may slide with the inclined surface 511 of the extension arm 51, but it will not cause any obstruction.

[0069] The abutment groove 61 is provided with a guide arc surface suitable for abutting and cooperating with the inclined surface 511, so that the contact area between the unlocking drive component 5 and the side sliding stop component 6 is small when they slide relative to each other, thus the friction is also small, making the unlocking movement smoother.

[0070] In this embodiment, the extension arm 51 is designed with an inclined surface 511, which can generate a sufficiently large vertical unlocking force with a small operating force, achieving the effect of saving effort. Moreover, the structure is simple and reliable, and the entire transmission chain is very compact. During the unlocking operation, the user can feel a smooth and damped operating feedback, which significantly improves the user's confidence. In addition, the extension arm 51 always passes through the abutment groove 61, and the two are always mechanically connected together, with no possibility of disengagement or separation, ensuring the absolute reliability of the linkage mechanism.

[0071] Optionally, combined Figures 5 to 11 As shown, the first limiting part 31 is a triangular protrusion provided at the bottom of the sliding disk 3. The triangular protrusion has a right-angled side surface 311. When the sliding disk 3 is locked with the rotating disk 2, the side sliding stop 6 abuts against the right-angled side surface 311. There are two triangular protrusions. The two triangular protrusions are arranged at intervals along the sliding direction of the sliding disk 3, and the right-angled side surfaces 311 of the two triangular protrusions are arranged opposite to each other. The sliding disk 3 has an initial state and a sliding state. When it is in the initial state, the side sliding stop 6 abuts against the right-angled side surface 311 of the triangular protrusion that is forward in the sliding direction. When it is in the sliding state, the side sliding stop 6 abuts against the right-angled side surface 311 of the triangular protrusion that is backward in the sliding direction.

[0072] The triangular protrusion is a protrusion with a cross-section approximately equal to a right triangle. It has a right-angled side 311, which forms an angle with the sliding direction of the sliding disc 3. Typically, the right-angled side 311 is perpendicular to the sliding direction or forms an acute angle to achieve reliable locking. In the locked state, the side-slip stop 6 rests laterally against this right-angled side 311. When the sliding disc 3 is subjected to an external force (such as vehicle inertia or a child's pushing force) attempting to slide laterally, this force is blocked by the side-slip stop 6 perpendicularly pressing against the right-angled side 311.

[0073] The number of triangular protrusions is preferably two. The two triangular protrusions are arranged at a certain distance along the sliding direction of the sliding disk 3. The right-angled sides 311 of the two triangular protrusions are set opposite to each other, which means that the right-angled side 311 of one triangular protrusion faces the front of the sliding direction, while the other faces the rear.

[0074] like Figure 4 , Figure 5 As shown, in the initial state, i.e., when the chair back 4 is not sliding sideways, the sliding plate 3 is in the innermost position. At this time, the side-sliding stop 6 abuts against the right-angled side 311 of the forward triangular protrusion. This triangular protrusion can prevent the sliding plate 3 from accidentally sliding outward. Figure 11 As shown, in the slide-out state, when the user slides the backrest 4 to the outermost position for easy entry and exit, the slide-out disc 3 moves into place. At this time, the side-sliding stop 6 automatically springs up under the spring force of the first reset piece 62 and abuts against the right-angled side surface 311 of the rear triangular protrusion. This triangular protrusion can prevent the slide-out disc 3 from accidentally retracting inward.

[0075] When the side sliding stop 6 abuts against the right-angled side surface 311, in the initial state, the rear end of the slide rail 22 is provided with a limit structure at the extreme position, such as a boss to limit the sliding plate 3 from sliding out from the rear side of the rotating plate 2. In the sliding state, the side wall of the slide rail 22 is provided with a limit structure to limit the sliding plate 3 from continuing to slide out, such as a protrusion, or a limit pin can be provided in the middle of the rotating plate 2 to limit the sliding position of the sliding plate 3.

[0076] In this embodiment, by designing the first limiting part 31 as two triangular protrusion structures with a specific layout, and utilizing its right-angled side surface 311 to form an abutment with the side sliding stop 6, the side sliding locking function is significantly improved in terms of reliability, operation feel and safety, and a higher strength impact-resistant locking is achieved; through the two triangular protrusion structures arranged in opposite directions, the two triangular protrusions correspond to the initial state and the sliding state respectively, and their right-angled side surfaces 311 arranged in opposite directions can respectively prevent the sliding plate 3 from moving unexpectedly in two opposite directions (retracting inward or sliding outward), thereby enhancing the stability and safety during use.

[0077] Optionally, combined Figures 12 to 18 As shown, the triangular protrusion also has a beveled surface 312, and the beveled surfaces 312 of the two triangular protrusions are arranged opposite to each other; the side wall of the sliding plate 3 is provided with an anti-reverse protrusion 32, and the rotating plate 2 is provided with a slide rail 22 that is slidably connected to the sliding plate 3. The side wall of the slide rail 22 is provided with a first protrusion 221 and a second protrusion 222 at intervals; when the side sliding stop 6 is unlocked from the front of the sliding direction in the initial state, the anti-reverse protrusion 32 and the first protrusion 221 are engaged to limit the sliding plate 3 to move back to the initial state; when the side sliding stop 6 is unlocked from the rear of the sliding direction in the sliding state, the anti-reverse protrusion 32 and the second protrusion 222 are engaged to limit the sliding plate 3 to move back to the sliding state.

[0078] Among them, one side of the triangular protrusion is a vertical right-angled side 311, which serves as a locking function, and the other side is an inclined side 312, which serves as a guiding function. A small protrusion is provided on the side wall of the sliding disc 3 (the side perpendicular to the sliding direction). The protrusion can undergo a small deformation under force. The inner side wall of the slide rail 22 (the surface in contact with the anti-reverse protrusion 32) is provided with a first protrusion 221 and a second protrusion 222 at intervals, which correspond to the positions where the anti-reverse protrusion 32 should cooperate in the initial state and the sliding state, respectively. When the operator applies a large pushing force, the two can disengage from each other. The two sides of the slide rail 22 are provided with a first protrusion 221 and a second protrusion 222 at intervals, which improves stability.

[0079] like Figure 8 , Figure 9As shown, when unlocking from the initial state and sliding outwards, the user operates to unlock, and the side-sliding stop 6 moves down, disengaging from the right-angled side surface 311 of the front triangular protrusion; as Figure 13 As shown, the user begins to pull the chair back 4 outward, and the sliding disc 3 begins to move outward. When the sliding disc 3 has just left the initial position by a small distance, the anti-reverse protrusion 32 just passes the first protrusion 221. This action prevents the sliding disc 3 from automatically sliding back to the initial position due to inertia when the user releases his hand, stabilizing it in an intermediate position of "unlocked, not fully slid out", making it convenient for the user to continue operating.

[0080] After the user places the child in the seat next to the car door, they unlock the car. The side-sliding gear 6 moves down and disengages from the right-angled side 311 of the rear triangular protrusion. Figure 15 As shown, when the user pushes the backrest 4 inward, the sliding disc 3 begins to move inward. Similarly, the anti-reverse protrusion 32 will just pass the second protrusion 222 after moving a short distance. This prevents the seat from accidentally sliding back to the sliding state due to its own weight or slight pushing force, keeping it stable in the "unlocked, not fully retracted" position, making it convenient for the user to continue the retraction operation, adjust the posture, or perform the rotation operation.

[0081] In this embodiment, based on the triangular protrusion locking structure, a collaborative design of the inclined surface 312 and the anti-reverse protrusion 32 system is introduced. Through the opposing arrangement of the inclined surfaces 312, smooth guidance is achieved. This allows the user to move along the inclined surface 312 of the triangular protrusion to a position where it locks with the right-angled surface 311 after releasing the handle 84 and continuing to push the sliding plate 3. This makes the side-sliding stop 6 more convenient to operate, as it eliminates the need to hold the unlocking component throughout the entire process. The anti-reverse mechanism further enhances the user experience. The structure of the protrusion 32 and the double protrusion on the slide rail 22 effectively prevents accidental slippage after unlocking. After unlocking, the sliding disc 3 is prone to uncontrolled sliding under its own weight or the slope of the carriage. The anti-reverse slippage protrusion 32, in cooperation with the first protrusion 221 or the second protrusion 222, immediately forms a flexible intermediate stop after the sliding disc 3 has just left the initial state or the sliding state two endpoints by a small distance. This prevents the seat back 4 from accidentally sliding back when the user lets go, changes hands, or adjusts their posture, making the operation process completely controllable and improving safety and ease of operation.

[0082] Optionally, combined Figures 5 to 11 As shown, the bottom of the sliding disk 3 is an arc-shaped surface, and the sliding path of the sliding disk 3 relative to the rotating disk 2 is an arc.

[0083] The bottom of the sliding disc 3 is an arc-shaped surface, not a flat surface. Correspondingly, the contact surface of the slide rail 22 connected to the sliding disc 3 on the rotating disc 2 is also a concave arc-shaped surface that matches the arc-shaped surface. When the sliding disc 3 moves relative to the rotating disc 2, its movement path is naturally constrained to an arc line centered on the center of this arc. When the user pulls the seat back 4 outward, the seat back 4 does not move outward in a straight line parallel to the door, but moves outward along a smooth curve. This makes the overall movement of the seat back 4 occupy less space, which is suitable for situations where the interior space is small.

[0084] In this embodiment, by designing the bottom of the sliding disc 3 and its movement path as arc-shaped, active avoidance and optimized utilization of the narrow space inside the vehicle are achieved, so that the top of the seat back 4 can avoid fixed objects inside the vehicle such as B-pillars and door frames, fundamentally avoiding scratches and interference, and making this function usable in various compact models; and the arc-shaped sliding trajectory makes the seat back 4 more supportive of the infant, allowing the infant to sit more comfortably inside the seat back 4 during the sliding process, thus improving safety.

[0085] Optionally, combined Figures 2 to 11 As shown, it also includes a second reset member 73, the two ends of which are respectively connected to the unlocking drive member 5 and the rotating disk 2; the second limiting part 11 is a plurality of slots circumferentially disposed on the base 1. When the rotating disk 2 is locked to the base 1, one of the plurality of slots locks into the rotating stop member 7. When the movable handle 84 is pulled, the pulling member 82 drives the unlocking drive member 5 to move, and the unlocking drive member 5 drives the rotating stop member 7 to move to disengage from the slot; when the movable handle 84 is released, the unlocking drive member 5 is radially reset under the force of the second reset member 73, and the unlocking drive member 5 simultaneously drives the rotating stop member 7 to move radially outward so as to lock into the slot again.

[0086] The base 1 has multiple slots arranged circumferentially. These slots are usually distributed at equal angles and correspond to different rotation positions of the seat, such as forward, reverse, and side orientation (e.g., 90°). The slots are holes or recesses for receiving the rotation stop component 7. The rotation stop component 7 is a locking pin or latch that can move radially within the rotating disk 2 (i.e., in the direction pointing towards or away from the center of rotation). In the locked state, its end is inserted into one of the slots of the base 1 to prevent relative rotation between the rotating disk 2 and the base 1.

[0087] When the user pulls the movable handle 84, the movable handle 84 drives the unlocking drive 5 to move. This movement directly or indirectly pulls the rotating stop 7, causing it to move radially inward, thus pulling it out of the slot in the base 1 and releasing the rotation lock. This process occurs simultaneously with the unlocking of the side-sliding stop 6. A second reset element 73 is added, typically a tension spring. The two ends of this tension spring are connected to the unlocking drive 5 and the rotating disk 2, respectively. When the user releases the movable handle 84, the contraction force of the second reset element 73 will pull... The unlocking drive 5 returns to its initial position; as the unlocking drive 5 resets, it synchronously pushes the rotating stop 7 to move radially outward. If the rotating disk 2 has been rotated to a preset position (its slot is aligned with the rotating stop 7), the rotating stop 7 will automatically spring into the slot under the action of the spring force, thus achieving automatic locking; if it is not aligned, the rotating stop 7 will press against the plane of the base 1 until the user rotates the chair back 4 to align the position, at which point the spring force will push it into the slot, accompanied by a clear "click" sound.

[0088] In this embodiment, the structure connecting the second reset member 73 to the unlocking drive member 5 enables the forced automatic reset and relocking of the rotation lock. When the user releases the movable handle 84, the pulling force of the second reset member 73 will forcefully pull the unlocking drive member 5 and the connected rotation stop member 7 to reset, ensuring that as long as the chair back 4 is rotated to any preset position, the rotation stop member 7 will automatically spring in and lock under the drive of the spring force, forming a safety mechanism of locking when in position and locking when released, completely avoiding the risk of the user forgetting to manually lock the rotation function, and improving safety and convenience.

[0089] Optionally, combined Figure 3 , Figure 16 As shown, the rotating disk 2 is provided with a guide groove 23 for the radial movement of the rotating stop 7. The rotating stop 7 is provided with a screw post 71 and a stop block 72 that cooperates with the bottom surface of the guide groove 23. The unlocking drive 5 is provided with a through hole 52 that cooperates with the screw post 71. It also includes a screw and a pressure plate 81 connected to the pulling member 82. The pressure plate 81 is installed on the upper surface of the through hole 52. The screw passes through the pressure plate 81 and is tightened with the screw post 71.

[0090] Among them, the guide groove 23 is a radially extending elongated groove on the rotating disk 2. This groove provides a precise track for the radial movement of the rotating stop 7, preventing it from swaying or rotating; the screw post 71 is a threaded post extending upward from the main body of the rotating stop 7; the stop block 72 is a protruding block structure on the side of the rotating stop 7, which prevents the rotating stop 7 from being accidentally pulled out from above the rotating disk 2, and achieves vertical limiting.

[0091] A through hole 52 is made on the unlocking drive component 5 at the position corresponding to the screw post 71. The pressure plate 81 is an independent metal plate installed on the upper surface of the through hole 52 of the unlocking drive component 5. The screw passes through the pressure plate 81 and the through hole 52 of the unlocking drive component 5 from above, and finally tightens into the screw post 71 on the rotating stop component 7. After tightening, the rotating stop component 7 can slide freely in the radial direction within the guide groove 23. When the screw is tightened, the pressure plate 81 presses the unlocking drive component 5 tightly, while the screw post 71 provides a strong connection. The rotating stop component 7, the unlocking drive component 5, the pressure plate 81, and the screw are rigidly connected into a moving whole. The movement of the unlocking drive component 5 will be directly converted into the precise radial movement of the rotating stop component 7 without any delay.

[0092] In this embodiment, the precise guidance and absolute vertical limit of the rotating stop 7 are achieved through the cooperative structure of the guide groove 23 and the stop block 72, effectively providing safety assurance. The rigid connection structure of the screw post 71, the pressure plate 81 and the screw achieves gapless and highly reliable power transmission between the unlocking drive 5 and the rotating stop 7. This direct screw fastening connection allows every tiny displacement of the user's operating handle 84 to be instantly and accurately converted into radial movement of the rotating stop 7, resulting in a solid operating feel, sensitive response, and improved user experience.

[0093] The pulling element 82 is preferably a steel wire rope, a flexible metal cable with high tensile strength. One end of the steel wire rope is connected to the movable handle 84, and the other end is connected to the pressure plate 81. The end of the steel wire rope can also be integrally formed into the pressure plate 81. The steel wire rope acts as a transmission medium, remotely and precisely transmitting the linear pulling force of the user on the movable handle 84 to the pressure plate 81 located inside. When the movable handle 84 is pulled, the steel wire rope is tightened, applying a linear pulling force to the pressure plate 81. The pressure plate 81, which is rigidly connected to the unlocking drive element 5 and the rotating stop element 7, is pulled. This movement simultaneously drives the rotating stop element 7 to retract radially inward and the side-sliding stop element 6 to press down, achieving dual unlocking. The flexible steel wire rope can flexibly bypass the complex internal structure of the seat. The single steel wire rope structure greatly simplifies the design, reduces the occupation of internal space and assembly complexity, and is low in cost.

[0094] Another embodiment of the present invention provides a child safety seat, including the one-button multi-control seat adjustment structure described above.

[0095] In this embodiment, the child safety seat connects the angle adjustment component 9, the side sliding component 6, and the rotation adjustment component 7 to the handle assembly 8. A single operation of the handle assembly 8 simultaneously moves the angle adjustment component 9, the side sliding component 6, and the rotation adjustment component 7, causing them to disengage from the third limiting part 331 of the connecting frame 33, the first limiting part 31 of the sliding plate 3, and the second limiting part 11 of the base 1, respectively. This achieves one-button simultaneous unlocking of the three adjustment functions. In the unlocked state, the user can continuously adjust the angle of the seat back 4 relative to the connecting frame 33 in one operation. The sliding of the slide plate 3 relative to the rotating plate 2 and the rotation of the rotating plate 2 relative to the base 1 make operation extremely simple and efficient. The control of all adjustment functions is integrated into a single handle assembly 8, which reduces the number of independent operation points that children may accidentally touch from the source, significantly reducing the risk of the seat back 4 being accidentally unlocked while driving, thus ensuring high safety. The locking relationship between the angle stop component 9 and the connecting bracket 33, the side sliding stop component 6 and the slide plate 3, and the rotating stop component 7 and the base 1 is clear. The centralized drive of the handle assembly 8 simplifies the internal structure and improves the overall reliability of the system.

[0096] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A one-key multi-control seat adjusting structure, comprising a base (1), a seat back (4), a rotating disc (2) and a sliding-out disc (3) in sliding connection with the rotating disc (2), the rotating disc (2) being in rotational connection with the base (1), the sliding-out disc (3) being provided with a connecting frame (33) in sliding connection with the seat back (4), characterized in that, It also includes a handle assembly (8), an angle stop (9), a side slide stop (6), and a rotation stop (7). The angle stop (9), the side slide stop (6), and the rotation stop (7) are all linked to the handle assembly (8). The side slide stop (6) and the rotation stop (7) are both movably connected to the rotating disk (2). The angle stop (9) is movably connected to the connecting frame (33). The sliding disk (3) is provided with a first limiting part (31) suitable for locking with the side slide stop (6). The base (1) is provided with a second limiting part (11) suitable for locking with the rotation stop (7). The connecting frame (33) is provided with a third limiting part (331) suitable for locking with the angle stop (9). The handle assembly (8) includes a pull member (82), a handle base (83) and a movable handle (84) connected to each other. The handle base (83) is installed on the chair back (4), and the angle stop member (9) is movably installed between the handle base (83) and the movable handle (84). It also includes an unlocking drive member (5). The two ends of the pull member (82) are respectively connected to the movable handle (84) and the unlocking drive member (5). The side sliding stop member (6) and the rotation stop member (7) are both connected to the unlocking drive member (5). When the movable handle (84) is pulled, the movable handle (84) drives the angle stop (9) to move to disengage from the third limiting part (331). At the same time, the movable handle (84) drives the unlocking drive (5) to move by pulling the pull member (82). The unlocking drive (5) simultaneously drives the rotation stop (7) and the side sliding stop (6) to move, so that the rotation stop (7) disengages from the second limiting part (11) and the side sliding stop (6) disengages from the first limiting part (31), thereby realizing the simultaneous unlocking of the chair back (4) side sliding, rotation and angle adjustment operation; When the movable handle (84) is released, the pulling force of the pull member (82) on the unlocking drive member (5) is removed so that the unlocking drive member (5) is reset.

2. The one-button multi-control seat adjustment structure according to claim 1, characterized in that, The rotating disk (2) is provided with an upward-opening mounting groove (21), the side sliding stop (6) is movably mounted in the mounting groove (21), and a first reset member (62) is also installed in the mounting groove (21). The upper and lower ends of the first reset member (62) are respectively connected to the side sliding stop (6) and the mounting groove (21). The unlocking drive (5) is slidably connected to the side sliding stop (6). When the movable handle (84) is pulled, the pulling member (82) drives the unlocking drive (5) to move. The unlocking drive (5) can push the side sliding stop (6) down to disengage from the first limiting part (31). When the movable handle (84) is released, the unlocking drive (5) resets. The side sliding stop (6) moves up under the force of the first reset member (62) so as to lock and cooperate with the first limiting part (31) again.

3. The one-button multi-control seat adjustment structure according to claim 2, characterized in that, The unlocking drive (5) is provided with an extension arm (51), and the lower end face of the extension arm (51) is provided with a slope (511). The side sliding stop (6) is provided with an abutment groove (61) for the extension arm (51) to pass through along the length direction. The slope (511) is adapted to abut against the abutment groove (61) during the unlocking process of the unlocking drive (5) so as to push the side sliding stop (6) to move down and disengage from the first limiting part (31).

4. The one-button multi-control seat adjustment structure according to claim 2, characterized in that, The first limiting part (31) is a triangular protrusion provided at the bottom of the sliding plate (3). The triangular protrusion has a right-angled side surface (311). When the sliding plate (3) is locked with the rotating plate (2), the side sliding stop (6) abuts against the right-angled side surface (311). There are two triangular protrusions. The two triangular protrusions are spaced apart along the sliding direction of the sliding plate (3), and the right-angled side surfaces (311) of the two triangular protrusions are opposite to each other. The sliding plate (3) has an initial state and a sliding state. When it is in the initial state, the side sliding stop (6) abuts against the right-angled side surface (311) of the triangular protrusion that is forward in the sliding direction. When it is in the sliding state, the side sliding stop (6) abuts against the right-angled side surface (311) of the triangular protrusion that is backward in the sliding direction.

5. The one-button multi-control seat adjustment structure according to claim 4, characterized in that, The triangular protrusion also has a hypotenuse (312), and the hypotenuses (312) of the two triangular protrusions are arranged opposite to each other; The side wall of the sliding plate (3) is provided with anti-reverse protrusions (32), and the rotating plate (2) is provided with a slide rail (22) that is slidably connected to the sliding plate (3). The side wall of the slide rail (22) is provided with a first protrusion (221) and a second protrusion (222) at intervals. When the side sliding stop (6) is unlocked from the front of the sliding direction in the initial state, the anti-reverse protrusion (32) and the first protrusion (221) are limited to prevent the sliding plate (3) from moving back to the initial state. When the side sliding stop (6) is unlocked from the rear of the sliding direction in the sliding state, the anti-reverse protrusion (32) and the second protrusion (222) are limited to prevent the sliding plate (3) from moving back to the sliding state.

6. The one-button multi-control seat adjustment structure according to claim 1, characterized in that, The angle stop component (9) is a stop pin, which has a horizontal pin (91) and a vertical shaft (92) that are perpendicularly connected to each other. The handle base (83) has a horizontal groove (831) that is slidably connected to the horizontal pin (91). The movable handle (84) has an inclined groove (841) that is slidably connected to the vertical shaft (92). The third limiting part (331) is a plurality of stop holes provided on the connecting frame (33). The plurality of stop holes are adapted to cooperate with the horizontal pin (91) to limit the position of the backrest (4) angle adjustment. When the movable handle (84) is pulled, the vertical shaft (92) is driven to move in the inclined groove (841), so that the horizontal pin (91) moves inward and retracts in the horizontal groove (831), thereby disengaging the stop pin from the stop hole to unlock the backrest (4) angle adjustment. The handle base (83) is also equipped with a third reset member (85), the two ends of which are connected to the movable handle (84) and the handle base (83) respectively; when the movable handle (84) is released, the movable handle (84) moves under the force of the third reset member (85) so as to drive the gear pin to lock into the gear hole again.

7. The one-button multi-control seat adjustment structure according to any one of claims 2-6, characterized in that, It also includes a second reset member (73), the two ends of which are connected to the unlocking drive member (5) and the rotating disk (2) respectively; the second limiting part (11) is a plurality of slots circumferentially disposed on the base (1). When the rotating disk (2) is locked to the base (1), one of the plurality of slots locks into the rotating stop member (7). When the movable handle (84) is pulled, the pulling member (82) drives the unlocking drive member (5) to move, and the unlocking drive member (5) drives the rotating stop member (7) to move to disengage from the slot; when the movable handle (84) is released, the unlocking drive member (5) is radially reset under the force of the second reset member (73), and the unlocking drive member (5) simultaneously drives the rotating stop member (7) to move radially outward so as to lock into the slot again.

8. The one-button multi-control seat adjustment structure according to claim 7, characterized in that, The rotating disk (2) is provided with a guide groove (23) for the radial movement of the rotating stop (7). The rotating stop (7) is provided with a screw post (71) and a stop block (72) that cooperates with the bottom surface of the guide groove (23). The unlocking drive (5) is provided with a through hole (52) that cooperates with the screw post (71). It also includes a screw and a pressure plate (81) connected to the pulling member (82). The pressure plate (81) is installed on the upper surface of the through hole (52). The screw passes through the pressure plate (81) and is tightened with the screw post (71).

9. A child safety seat, characterized in that, Includes the one-button multi-control seat adjustment structure as described in any one of claims 1-8.

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