child safety seat tilt and swivel adjustment mechanism
By integrating tilt and swivel adjustment functions into a compact structure, the problem of high mechanical complexity in existing technologies is solved, achieving simplified assembly and improved safety and comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AN HUI WORLDWISE BABY SAFE-TECH CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-26
AI Technical Summary
Existing child safety seats have complex tilt and swivel adjustment mechanisms with many parts, making assembly difficult.
The integrated design combines pitch and rotation adjustment functions into a compact structure. Through the cooperation of key components such as turntable, gear shifter, oblique slot and vertical slot, stable rotation and multi-angle pitch adjustment are achieved.
The number of parts has been significantly reduced, the assembly process has been simplified, the performance and reliability of the product have been improved, and the safety and comfort of children riding in the vehicle have been ensured.
Smart Images
Figure CN224276905U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a child safety seat, and more particularly to a tilt and rotation adjustment mechanism for a child safety seat. Background Technology
[0002] Child safety seats are typically installed securely in car seats to ensure the safety of children while traveling in a vehicle. A child safety seat consists of a base and a backrest. To accommodate children of different ages and for comfort, an adjustable tilt mechanism is usually provided between the base and the backrest. Furthermore, to accommodate forward-facing and left-right orientation installations, a rotating mechanism is required between the backrest and the base.
[0003] For example, the chair tilt angle adjustment structure and child safety seat disclosed in application publication number CN108128221A achieves the tilt angle of the chair by means of a fixed shaft with a shaft connection to the base on the fixed frame, and an arc-shaped fixed frame located in an arc-shaped track. The tilt angle of the chair is achieved by moving the arc-shaped fixed frame in the arc-shaped track, that is, by adjusting the position of the arc-shaped fixed frame on the chair body.
[0004] The rotating connection structure between the base and the chair body disclosed in application publication number CN108237955A allows the chair body to be fixed relative to the base in four directions through the cooperation between the four locking components and the two locking rods on the linkage lock. In addition, the structure has good reliability after locking by locking at two points in each direction and connecting the fixed shaft.
[0005] Most existing child safety seats are equipped with both tilt and swivel adjustment mechanisms, which increases the complexity of the mechanism, adds more parts, and makes product assembly more troublesome. Utility Model Content
[0006] The technical problem to be solved by this utility model is to provide a highly integrated and easy-to-assemble tilt and rotation adjustment mechanism for a child safety seat.
[0007] The technical solution of this utility model to solve the above-mentioned technical problems is: a tilt and rotation adjustment mechanism for a child safety seat, including a seat body, a base and a turntable; the turntable is rotatably mounted on the base;
[0008] The turntable has four locking grooves evenly distributed on its outer periphery; the turntable has a gear frame at its center, and the gear frame has multiple parallel pitch and tilt gear grooves; the turntable has two sliding grooves located on both sides of the pitch and tilt gear grooves.
[0009] A fixed frame is fixed to the back of the chair body. The fixed frame includes two support walls and a base plate. The base plate is located on the bottom surface of the turntable. The two support walls are respectively connected to the back of the chair back through corresponding sliding grooves. The two support walls are respectively provided with vertical grooves opened along the height direction of the support walls. The support walls can move along the sliding grooves and the base plate can move along the base of the turntable.
[0010] The front end of the rotary release handle is provided with a locking tongue that can be inserted into the locking slot;
[0011] The front end of the angle adjustment handle is provided with two support arms, each with an oblique groove. The gear shaft passes through the oblique groove and the vertical groove on the fixed frame and falls into the tilt gear groove.
[0012] A further preferred technical solution of this utility model is: pulling the angle adjustment handle, the gear shaft moves along the inclined groove, so that the gear shaft moves upward from the bottom of the vertical groove, thereby disengaging from the pitch gear groove.
[0013] A further preferred embodiment of this utility model is that the base is provided with a groove for rotating and releasing the handle.
[0014] A further preferred embodiment of this utility model is as follows: a first spring is provided between the rotary release handle and the base; a second spring is provided between the angle adjustment handle and the base.
[0015] A further preferred embodiment of this utility model is that the upper surfaces of the two arms are connected to the back of the chair body by screws.
[0016] A further preferred embodiment of this utility model is: the base has a recessed hole at its center, and the edge of the recessed hole has a first annular stop;
[0017] The turntable is provided with an annular vertical wall and a second annular stop on its periphery, with the second annular stop located on the periphery of the annular vertical wall;
[0018] The turntable is located inside the concave hole, and the second annular stop is located outside the first annular stop.
[0019] A further preferred embodiment of this utility model is that the turntable and the fixing frame are injection molded parts.
[0020] A further preferred embodiment of this utility model is: a sliding guide structure is provided between the rotary release handle and the base, including a guide protrusion on the handle and a guide groove on the base.
[0021] A further preferred embodiment of this utility model is that the width of both the oblique groove and the vertical groove is greater than the diameter of the gear shaft;
[0022] The inclined groove includes a guide section and a control section that are interconnected. The guide section extends horizontally, and the control section extends obliquely upward. The lower end of the control section is aligned with the lower end of the vertical groove.
[0023] The upper end of the inclined groove is higher than the upper opening end of the gear slot.
[0024] A further preferred embodiment of this utility model is: the gear shift frame includes a plurality of spaced gear shift protrusions, and the pitch gear shift groove is formed between adjacent gear shift protrusions.
[0025] Among them, the foremost and the last gear shift protrusions extend upwards by a certain distance to be higher than the other gear shift protrusions, thereby limiting the maximum forward and backward movement range of the gear shift shaft relative to the gear shift bracket.
[0026] Compared with existing technologies, the advantages of this utility model are: the tilt and rotation adjustment mechanism of this utility model integrates tilt and rotation adjustment functions into a compact structure through integrated design. This technology significantly reduces the number of parts and avoids the complexity caused by multiple independent adjustment mechanisms in traditional designs. Through the ingenious cooperation of key components such as the turntable, gear shifter, oblique groove, and vertical groove, efficient functional integration is achieved, simplifying the overall mechanism and making the product more concise and compact.
[0027] The tilt and swivel adjustment mechanism of the child safety seat integrates tilt and swivel adjustments into a compact structure. Four locking grooves evenly distributed around the outer circumference of the turntable engage with the locking tongue of the rotary release handle, ensuring stable rotation and locking of the seat and guaranteeing safety in different rotation positions. Simultaneously, the center position bracket and multiple tilt position grooves of the turntable engage with the angled and vertical grooves of the angle adjustment handle, enabling multi-angle tilt adjustment of the seat. This highly integrated design not only reduces the number of parts and lowers production costs but also improves the overall performance and reliability of the product. Attached Figure Description
[0028] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.
[0029] Figure 1 A schematic diagram of the overall structure of a child safety seat;
[0030] Figure 2A structural disassembly diagram of a child safety seat;
[0031] Figure 3 A schematic diagram of the structure of the backrest of a child safety seat;
[0032] Figure 4 A schematic diagram of a portion of the chair back structure. Figure 1 ;
[0033] Figure 5 A schematic diagram of a portion of the chair back structure. Figure 2 ;
[0034] Figure 6 A schematic diagram of the turntable and the rotating release handle;
[0035] Figure 7 This is a schematic diagram showing the assembly of the angle adjustment handle and the base;
[0036] Figure 8 This is a partial schematic diagram of the turntable and base after assembly;
[0037] Figure 9 This is a partial schematic diagram of the angle adjustment handle and the turntable;
[0038] Figure 10 A schematic diagram of the overall structure of the turntable for a child safety seat;
[0039] Figure 11 This is a schematic diagram of the overall structure of the angle-adjustable handle. Detailed Implementation
[0040] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.
[0041] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined and explained in subsequent figures.
[0042] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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 utility model. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and cannot be considered as limitations on this utility model.
[0043] like Figure 1 As shown in the figure, the tilt and rotation adjustment mechanism 100 of the child safety seat achieves high integration and convenient operation through several key components and their cooperation, which significantly improves the user experience and safety of the child safety seat.
[0044] First, the turntable 30 is rotatably mounted on the base 20. Its four evenly distributed locking slots 31, in conjunction with the locking tongue 71 at the front of the rotary release handle 70, enable precise and stable locking at different rotation angles. This ensures the child safety seat remains in the set rotation position while the car is in motion, effectively preventing safety hazards caused by accidental seat rotation. Simultaneously, the gear shift bracket 50 at the center of the turntable 30 has multiple parallel tilt and tilt grooves 51. Combined with the oblique grooves 82 on the two support arms 81 at the front of the angle adjustment handle 80 and the vertical grooves 63 on the support wall 61 of the fixing frame 60, the gear shift shaft 83 can move flexibly within these grooves and accurately fall into the tilt and tilt grooves 51, thereby achieving multi-angle tilt and tilt adjustment of the seat 10.
[0045] This technology not only meets the personalized needs of children of different ages and heights for their seating angle, but also maintains a smooth and stable adjustment process, avoiding discomfort to children caused by rapid or unstable angle changes.
[0046] Secondly, such as Figure 5 As shown, the fixing frame 60 is firmly fixed to the back of the chair body 10. Its two support walls 61 pass through the sliding grooves 38 on the turntable 30 and are connected to the back of the chair body. The base plate 62 is located on the bottom surface of the turntable 30. The support walls 61 move along the sliding grooves 38, and the base plate 62 moves along the base of the turntable 30. This structure provides stable support and a reliable movement path for the tilt adjustment of the chair body 10, ensuring that the chair body 10 can smoothly change its angle during adjustment without wobbling or jamming. At the same time, the upper ends of the two arms 81 are connected to the back of the chair body 10 by screws, further enhancing the connection strength between the fixing frame 60 and the chair body 10, making the entire adjustment mechanism more stable and reliable during use.
[0047] In fact, in the tilt and swivel adjustment mechanism of a child safety seat, such as Figure 3 , Figure 4 , Figure 9 , Figure 11 As shown, the two support arms 81 at the front end of the angle adjustment handle 80 are respectively provided with inclined grooves 82. The gear shaft 83 passes through the inclined groove 82 and the vertical groove 63 on the fixed frame 60, and finally falls into the tilt and pitch groove 51 on the gear frame 50. It cleverly utilizes the structural features of the inclined groove 82 and the vertical groove 63 to realize the flexible movement of the gear shaft 83 in different grooves, thereby completing the tilt and pitch adjustment of the chair body 10.
[0048] The specific working process is as follows: When the tilt angle of the chair body 10 needs to be adjusted, the user pulls the angle adjustment handle 80. As the handle 80 moves, its front support arm 81 drives the gear shift shaft 83 to move along the inclined groove 82. The inclined groove 82 allows the gear shift shaft 83 to move upward from the bottom of the vertical groove 63. As the gear shift shaft 83 moves upward along the inclined groove 82, it gradually disengages from the tilt position groove 51 it is currently in. This process not only achieves smooth movement of the gear shift shaft 83, but also ensures that the gear shift shaft 83 can smoothly transition between different grooves through the precise cooperation of the inclined groove 82 and the vertical groove 63, reducing friction and jamming during movement.
[0049] Finally, once the gear shift shaft 83 is completely disengaged from the tilt shift groove 51, the user can adjust the tilt angle of the seat 10 as needed until a suitable seating position is found. This technology not only improves the flexibility and convenience of adjustment but also ensures the stability and reliability of the adjustment process through a precise mechanical structure, providing children with a safer and more comfortable riding experience.
[0050] like Figure 2 ,like Figure 6 and Figure 8 As shown, the base 20 has a slot 21 for the rotary release handle 70 to move. The slot 21 provides a clear and stable movement path for the rotary release handle 70, ensuring that it can move smoothly back and forth during operation. At the same time, a first spring s1 is provided between the rotary release handle 70 and the base 20. This spring not only provides the handle with appropriate elastic force so that it can automatically reset after operation, but also plays a buffering role during adjustment, reducing the operating force and improving the comfort and convenience of adjustment.
[0051] When the seat needs to be rotated, the user pulls the rotation release handle 70. The locking tongue 71 at the front of the handle disengages from the locking groove 31 on the outer periphery of the turntable 30, allowing the turntable 30 to rotate freely. At this time, the first spring s1 is stretched, storing elastic potential energy. When the user releases the rotation release handle 70, the first spring s1 releases its elastic potential energy, automatically pulling the handle back to its initial position. The locking tongue 71 re-inserts into the locking groove 31, locking the turntable 30 in the new rotation position. This process not only ensures the operational stability and reliability of the rotation release handle 70, but also reduces the force required for operation through the buffering effect of the spring, improving the user experience.
[0052] Additionally, a second spring s2 is provided between the angle adjustment handle 80 and the base 20. When the user needs to adjust the tilt angle of the chair 10, they pull the angle adjustment handle 80. As the handle 80 moves, its front support arm 81 drives the shift shaft 83 to move along the inclined groove 82, causing the shift shaft 83 to move upward from the bottom of the vertical groove 63, thus disengaging from the current tilt position groove 51. During this process, the second spring s2 is stretched, storing elastic potential energy. When the user releases the angle adjustment handle 80, the second spring s2 releases its elastic potential energy, automatically pulling the handle back to its initial position, and the shift shaft 83 falls back into the new tilt position groove 51, completing the angle adjustment.
[0053] During installation, the upper ends of the two arms 81 of the angle adjustment handle 80 are connected to the back of the chair body 10 with screws. This ensures a secure connection between the angle adjustment handle 80 and the chair body 10, providing reliable mechanical support and making the entire adjustment mechanism more stable and reliable during use.
[0054] Preferably, in the tilt and rotation adjustment mechanism of the child safety seat, the base 20 has a recess 21 at its center, and the edge of the recess 21 has a first annular stop b1. The turntable 30 has an annular vertical wall 33 and a second annular stop b2 on its periphery, with the second annular stop b2 located outside the annular vertical wall 33. The turntable 30 is installed inside the recess 21, and the second annular stop b2 is located outside the first annular stop b1. This structural design, through the cooperation of the annular stop and the recess, achieves stable installation and positioning of the turntable 30 on the base 20, ensuring that the turntable 30 can rotate freely within a certain range, while preventing accidental detachment or excessive movement during use.
[0055] The second annular stop b2 cooperates with the first annular stop b1 to form a stable limiting structure. This design not only ensures the precise installation position of the turntable 30 on the base 20, but also restricts the axial movement of the turntable 30 through the interaction of the annular stops, allowing it to rotate smoothly on the base 20. During use, even if the vehicle encounters bumps or external impacts while driving, the turntable 30 will not easily detach from the base 20, thus ensuring the stability and reliability of the entire adjustment mechanism.
[0056] Preferably, the turntable 30 and the fixing frame 60 are injection molded parts. Injection molding is a highly efficient production method that can produce a large number of precise parts in a short time. This process not only improves production efficiency but also reduces the scrap rate during production, ensuring product quality and consistency.
[0057] In addition, a sliding guide structure g is provided between the rotary release handle 70 and the base 20, including a guide protrusion g1 on the handle and a guide groove g2 on the base 20. By sliding the guide protrusion g1 in the guide groove g2, it is ensured that the rotary release handle 70 can move smoothly and accurately along a predetermined path during operation, thereby realizing the locking and unlocking functions of the turntable 30.
[0058] Furthermore, such as Figure 11 As shown, the widths of both the inclined groove 82 and the vertical groove 63 are greater than the diameter of the gear shift shaft 83, ensuring that the gear shift shaft 83 can move freely within the grooves and reducing friction and jamming during movement. The inclined groove 82 includes a guide section 821 and a control section 822 that are interconnected. The guide section 821 extends horizontally, and the control section 822 extends obliquely upward. The lower end of the control section 822 is aligned with the lower end of the vertical groove 63, while the upper end of the inclined groove 82 is higher than the upper opening of the gear shift groove 51.
[0059] The guide section 821 of the inclined groove 82 extends horizontally, and when the gear shaft 83 moves within this area, the gear shaft 83 will not move vertically. This technique cleverly prevents the gear shaft 83 from accidentally dislodging from the target gear groove 51 during operation, especially when the angle adjustment handle 80 is accidentally touched. This anti-misoperation measure significantly improves the stability and reliability of the adjustment mechanism and reduces adjustment failures or instability caused by accidental operation.
[0060] Furthermore, the upper end of the inclined groove 82 is higher than the upper opening of the gear shift groove 51. This technical feature ensures that when the gear shift shaft 83 moves to the upper position of the inclined groove 82 (pulled all the way down), it can smoothly disengage from the gear shift groove 51, thereby achieving quick and flexible gear shifting. This not only improves the convenience of adjustment but also ensures the smoothness and efficiency of the adjustment process. Figures 8 to 10 As shown, the design of the shift lever 50 includes multiple spaced-apart shift protrusions 52, which form multiple tilt shift grooves 51. This design allows the shift lever 83 to move between different tilt shift grooves 51, thereby achieving tilt angle adjustment of the chair body 10. Specifically, as... Figure 10 As shown, the foremost gear shift protrusion 52a and the rearmost gear shift protrusion 52b extend upwards by a certain distance, making them higher than the other gear shift protrusions 52. This technique limits the maximum forward and backward movement range of the gear shift shaft 83 relative to the gear shift bracket 50, ensuring that the gear shift shaft 83 does not exceed the predetermined movement range during adjustment.
[0061] This invention describes the tilt and rotation adjustment mechanism of a child safety seat. Specific examples are used to illustrate the principle and implementation of this invention. The descriptions of these embodiments are merely for the purpose of helping to understand this invention and its core concepts. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.
Claims
1. A tilt and swivel adjustment mechanism for a child safety seat, characterized in that: It includes a chair body, a base, and a turntable; the turntable is rotatably mounted on the base; The turntable has four locking grooves evenly distributed on its outer periphery; the turntable has a gear frame at its center, and the gear frame has multiple parallel pitch and tilt gear grooves; the turntable has two sliding grooves located on both sides of the pitch and tilt gear grooves. A fixed frame is fixed to the back of the chair body. The fixed frame includes two support walls and a base plate. The base plate is located on the bottom surface of the turntable. The two support walls are respectively connected to the back of the chair back through corresponding sliding grooves. The two support walls are respectively provided with vertical grooves opened along the height direction of the support walls. The support walls can move along the sliding grooves and the base plate can move along the base of the turntable. The front end of the rotary release handle is provided with a locking tongue that can be inserted into the locking slot; The front end of the angle adjustment handle is provided with two support arms, each with an oblique groove. The gear shaft passes through the oblique groove and the vertical groove on the fixed frame and falls into the tilt gear groove.
2. The tilt and rotation adjustment mechanism of the child safety seat according to claim 1, characterized in that: Pull the angle adjustment handle, and the gear shaft moves along the inclined groove, causing the gear shaft to move upward from the bottom of the vertical groove, thereby disengaging from the pitch gear groove.
3. The tilt and rotation adjustment mechanism of the child safety seat according to claim 1, characterized in that: The base is provided with a slot for rotating and releasing the handle.
4. The tilt and rotation adjustment mechanism of the child safety seat according to claim 1, characterized in that: A first spring is provided between the rotary release handle and the base; A second spring is provided between the angle adjustment handle and the base.
5. The tilt and rotation adjustment mechanism of the child safety seat according to claim 1, characterized in that: The upper surfaces of the two arms are connected to the back of the chair body by screws.
6. The tilt and rotation adjustment mechanism of the child safety seat according to claim 1, characterized in that: The base has a recessed hole at its center, and a first annular stop is provided at the edge of the recessed hole; The turntable is provided with an annular vertical wall and a second annular stop on its periphery, with the second annular stop located on the periphery of the annular vertical wall; The turntable is located inside the concave hole, and the second annular stop is located outside the first annular stop.
7. The tilt and rotation adjustment mechanism of the child safety seat according to claim 1, characterized in that: The turntable and the mounting frame are injection molded parts.
8. The tilt and rotation adjustment mechanism of the child safety seat according to claim 1, characterized in that: The rotary release handle is provided with a sliding guide structure between itself and the base, including a guide protrusion on the handle and a guide groove on the base.
9. The tilt and rotation adjustment mechanism of the child safety seat according to claim 1, characterized in that: The widths of both the oblique groove and the vertical groove are greater than the diameter of the gear shaft; The inclined groove includes a guide section and a control section that are interconnected. The guide section extends horizontally, and the control section extends obliquely upward. The lower end of the control section is aligned with the lower end of the vertical groove. The upper end of the inclined groove is higher than the upper opening end of the gear slot.
10. The tilt and rotation adjustment mechanism of the child safety seat according to claim 1, characterized in that: The gear shift bracket includes multiple spaced gear shift protrusions, with the pitch gear shift grooves formed between adjacent gear shift protrusions. Among them, the foremost and the last gear shift protrusions extend upwards by a certain distance to be higher than the other gear shift protrusions, thereby limiting the maximum forward and backward movement range of the gear shift shaft relative to the gear shift bracket.