Pitching angle and rotation integrated mechanism of child safety seat

Abstract

The utility model discloses a child safety seat pitching angle and rotation integrated mechanism, the mechanism comprises a base, a seat body, a U-shaped rotating frame, a handle assembly and a locking piece, the periphery of the center of the base is provided with a plurality of limiting grooves used for locking the rotation direction of the seat body, the U-shaped rotating frame is provided with a front guide groove and a rear guide groove, and the limiting grooves are used for limiting the rotation direction of the seat body. The handle assembly comprises a driving part, a main body and a handle part, the driving part is provided with a horizontal groove and an inclined groove, a front guide shaft is installed on the back of the chair body, the locking piece is located in a concave cavity of the driving part and is matched with the front guide shaft through a first shaft hole, and the driving shaft penetrates through a second shaft hole of the locking piece and the inclined groove of the driving part; by pulling the handle assembly, the locking piece can rotate around the first shaft part to realize locking and unlocking functions, and the key innovation lies in that the mechanism allows the chair body to rotate under all pitching angle gears, so that the flexibility and convenience of operation are remarkably improved, and more efficient and safer use experience is provided for a user.

Description

Technical Field

[0001] This utility model relates to a child safety seat, and more particularly to an integrated mechanism for the tilt angle and rotation of 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. These two independent actuators increase the structural complexity of the child safety seat.

[0003] The integrated adjustment mechanism for chair body rotation and tilt angle of CN109532586B includes a guide frame installed on the back of the chair body and a handle assembly for adjusting the tilt angle of the chair body. The bottom of the guide frame is pivotally connected to the base so that the chair body can rotate relative to the base. The guide frame is provided with a movable limiting block with a drive shaft. The upper surface of the base has at least two limiting holes. The handle assembly drives the limiting block to fall into or leave the limiting holes by controlling the drive shaft. The handle assembly can adjust the tilt angle of the chair body base. At the same time, the handle assembly can be used to control the limiting block to fall into or leave the limiting holes on the base, so as to control the orientation of the chair body to rotate or be confined to the base. It can be seen that the handle assembly can simultaneously control the tilt angle between the chair body and the base, and control the rotation or confinement of the chair body base. This integrated mechanism simplifies the traditional two-set mechanism.

[0004] The integrated mechanism has the following problems: Patent CN109532586B can drive the chair back to adjust the tilt angle synchronously through the handle, but it can only achieve rotational adjustment at specific tilt angle positions, and cannot achieve rotational adjustment at all tilt angle positions. This will inevitably increase the inconvenience of rotational adjustment. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an integrated tilt and rotation mechanism for a child safety seat that improves ease of operation. Specifically, the seat can be rotated at all tilt positions, thus improving ease of operation.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is: an integrated mechanism for the tilt angle and rotation of a child safety seat.

[0007] It includes a base, a chair body, a U-shaped rotating frame, a handle assembly, and a locking component; the U-shaped rotating frame is connected to the center of the base via a central axis; the center of the base is provided with multiple circumferentially distributed limiting grooves;

[0008] The U-shaped rotating frame includes a bottom wall and two first side walls. The front section of the two first side walls is provided with a pair of parallel front guide grooves, and the rear end of the bottom wall is provided with a rear guide groove. The bottom wall corresponding to the front guide groove is provided with a plurality of stop grooves distributed along the length direction.

[0009] The handle assembly includes an integral drive unit, a main body, and a handle unit. The drive unit includes two second sidewalls, with a horizontal groove and an oblique groove provided between the two second sidewalls. A front guide shaft is installed on the back of the chair.

[0010] The locking member includes a first shaft portion having a first shaft hole, a second shaft portion having a second shaft hole, and a hook portion. The locking member is located in a cavity between two second sidewalls of the driving part. The front guide shaft passes through the first shaft hole of the locking member, the horizontal groove of the driving part, and the front guide groove of the U-shaped rotating frame. A driving shaft passes through the second shaft hole of the locking member and the oblique groove of the driving part.

[0011] In the first state, the hook of the locking member passes through one of the stop slots of the U-shaped rotating frame and extends into the limiting slot of the base. At this time, the rotation of the chair body relative to the base is locked. When the handle assembly is pulled to move a certain distance, the drive shaft slides in the inclined slot of the handle assembly, causing the locking member to rotate around the first shaft. The hook of the locking member rotates away from the limiting slot of the base and the stop slot of the U-shaped rotating frame, and the rotation lock is released. At this time, it is in the second state.

[0012] A further preferred technical solution of this utility model is as follows: In the second state, if the handle assembly is pulled forward, the chair body can slide relative to the base to adjust the tilt angle, and the front guide shaft slides in the front guide groove; or in the second state, the chair body can be rotated so that the U-shaped rotating frame corresponds to the next limiting groove on the base.

[0013] A further preferred embodiment of this utility model is as follows: a front fixing frame and a rear guide block are installed on the bottom of the chair back; the front guide shaft is installed on the front fixing frame; the rear guide block includes a neck and a limiting part, the neck is located in the rear guide groove and the limiting part is located on the rear side of the rear guide groove.

[0014] The front fixing frame is a U-shaped metal frame. The bottom of the U-shaped metal frame is connected to the back of the chair body. Shaft holes are opened on the two arms of the U-shaped metal frame, and the front guide shaft passes through the shaft holes.

[0015] A further preferred embodiment of this utility model is: four limiting grooves are evenly arranged in a ring around the base at 90-degree intervals.

[0016] A further preferred embodiment of this utility model is as follows: the front end of the U-shaped rotating frame is provided with a forward-curving part, and the rear end is provided with a backward-curving part; the forward-curving part and the backward-curving part are lower than the U-shaped rotating frame; the rear side of the base is provided with a backward-pressing part, and the front side of the base is provided with a forward-pressing part; the forward-pressing part presses down on the forward-curving part, and the backward-pressing part presses down on the backward-curving part;

[0017] Correspondingly, the base is provided with annular grooves corresponding to the front and rear upturned portions.

[0018] A further preferred embodiment of this utility model is: it also includes a reset spring, wherein there are two reset springs, one end of which is connected to the base and the other end of which is connected to the side of the main body of the handle assembly.

[0019] A further preferred embodiment of this utility model is as follows: the back of the chair body is provided with a groove for installing a handle assembly; the main body of the handle assembly is provided with a guide groove, and the back of the chair is provided with a guide post. When the handle assembly moves relative to the chair body, the guide post can move within the guide groove.

[0020] A further preferred embodiment of this utility model is that the inclination angle of the inclined groove is 30°-60°, and the sliding stroke of the drive shaft in the inclined groove is 10-20mm.

[0021] A further preferred embodiment of this invention is that the extension direction of the horizontal groove is consistent with the movement direction of the handle assembly.

[0022] A further preferred embodiment of this utility model is that the mating surface between the hook of the locking member and the gear slot and the limiting slot is an inclined surface, so that the hook can be inserted into or removed from the gear slot and the limiting slot more smoothly.

[0023] Compared with existing technologies, the advantages of this invention are as follows: Traditional child safety seats typically require adjusting the seat to a specific tilt angle before rotation, which is extremely inconvenient in practical use. This invention, however, utilizes an integrated mechanism that allows users to easily rotate the seat at different tilt angles. This technology breaks the limitations of traditional seat operation sequences, eliminating the need for repeated adjustments and greatly improving operational flexibility and convenience. For example, when switching the seat from facing the rear of the vehicle to facing the front, the user can directly pull the handle assembly to complete the rotation without first adjusting the seat's tilt angle, saving time and effort.

[0024] This technical solution allows users to freely rotate the seat at any tilt angle, meaning parents can quickly adjust the seat direction according to the child's immediate needs without worrying about the order of operations or angle limitations. This high degree of flexibility provides greater convenience for parents while also allowing children to have a more comfortable experience in the car, reducing discomfort or crying that may be caused by inconvenient seat adjustments.

[0025] Specifically, through the cooperation of the U-shaped rotating frame, front guide groove, rear guide groove, gear position groove, and locking component, this mechanism maintains a high degree of stability during operation. The design of the front guide shaft and rear guide block ensures smooth movement of the chair body during tilt and rotation adjustments, avoiding usage problems caused by wobbling or jamming. Simultaneously, the precise engagement of the locking component's hook with the gear position groove and limiting groove provides a reliable locking function, ensuring the chair body's stability during operation and enhancing the overall reliability of the product.

[0026] Furthermore, this integrated mechanism not only combines tilt and rotation functions but also offers greater functional flexibility through optimized design. For example, the tilt angle of the inclined slots and the sliding stroke design of the drive shaft make locking and unlocking actions more precise and efficient. Meanwhile, the design of four limiting slots evenly distributed at 90-degree intervals provides users with multiple preset angle options to meet the needs of different scenarios. Attached Figure Description

[0027] 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.

[0028] Figure 1 A schematic diagram of the overall structure of a child safety seat;

[0029] Figure 2 This is a disassembly diagram of the integrated mechanism in this embodiment;

[0030] Figure 3 Diagram of the cooperative structure of the integrated mechanism Figure 1 ;

[0031] Figure 4 Diagram of the cooperative structure of the integrated mechanism Figure 2 ;

[0032] Figure 5 Diagram of the cooperative structure of the integrated mechanism Figure 3 ;

[0033] Figure 6 The integrated mechanism is shown on the back of the chair. Figure 1 ;

[0034] Figure 7 The integrated mechanism is shown on the back of the chair. Figure 2 ;

[0035] Figure 8 This is a side sectional view of the integrated mechanism after assembly.

[0036] Figure 9 The integrated mechanism is shown on the back of the chair. Figure 3 ;

[0037] Figure 10 This is a schematic diagram of the overall structure of the U-shaped rotating frame in this embodiment;

[0038] Figure 11 This is a schematic diagram of the overall structure of the handle assembly in this embodiment;

[0039] Figure 12 This is a schematic diagram of the base structure in this embodiment;

[0040] Figure 13 This is a schematic diagram of the overall structure of the front fixing frame in this embodiment;

[0041] Figure 14 This is a schematic diagram of the overall structure of the locking component in this embodiment;

[0042] Figure 15 This is a schematic diagram of the overall structure of the rear guide block in this embodiment. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] like Figure 1 As shown, the child safety seat's tilt and swivel integrated mechanism 100, as Figure 2As shown, its core components include a base 101, a seat 102, a U-shaped rotating frame 103, a handle assembly 104, and a locking element 105. The base 101 serves as the foundation of the entire mechanism, providing stable support and connecting to the car seat. The seat 102 is the part that the child directly contacts, and its backrest is equipped with a front guide shaft 60, which works in conjunction with the U-shaped rotating frame 103 to adjust the tilt angle.

[0046] In addition, the U-shaped rotating frame 103 is connected to the center of the base 101 via the central shaft 10. Its unique structure allows it to support the chair body 102 and achieves locking and unlocking of the rotation function through interaction with the locking member 105. The handle assembly 104 is the core component of operation. By pulling the handle 50, the user can drive the locking member 105 to move, thereby achieving adjustment of the tilt angle or switching of the rotation function in different states.

[0047] Furthermore, the locking component 105, through the cooperation of its hook b3 with the limiting groove 20 of the base 101 and the stop groove 13 of the U-shaped rotating frame 103, precisely controls the rotation locking and unlocking of the chair body 102, ensuring operational reliability and safety. It should be noted that the base 101 has multiple circumferentially distributed limiting grooves 20 around its center position; by providing multiple circumferentially distributed limiting grooves 20 around the center position of the base 101, and cooperating with the hook b3 of the locking component 105, precise positioning of the chair body 102 at four key angles can be achieved. This meets the seating needs of children of different ages. Other specific technical solutions will be described in detail below:

[0048] like Figure 10 As shown, the U-shaped rotating frame 103 consists of a bottom wall 12 and two first side walls 11. At the front end of the two first side walls 11, a pair of parallel front guide grooves h1 are provided to guide the movement of the front guide shaft 60, ensuring the stability and flexibility of the chair body 102. Meanwhile, as... Figure 6 As shown, a rear guide groove h2 is provided at the rear end of the bottom wall 12. This guide groove cooperates with the rear guide block 15 to precisely guide the tilt angle adjustment of the chair body 102, so that it can smoothly achieve tilting movements at different angles, thereby meeting the needs of children's riding comfort and safety in different scenarios.

[0049] On the bottom wall 12 where the front guide groove h1 is located, a plurality of stop grooves 13 are evenly distributed along its length. These stop grooves 13 are specially designed for the hook b3 of the locking member 105. When the hook b3 is inserted into the corresponding stop groove 13, the chair body 102 can be precisely locked to ensure its stability in a specific position.

[0050] like Figure 11As shown, the handle assembly 104 consists of an integrally formed drive unit 30, a main body 40, and a handle part 50. The drive unit 30 has two second sidewalls 32, between which a horizontal groove c1 and an oblique groove c2 are machined. A front guide shaft 60 is mounted on the back of the chair body 102. This shaft is inserted into the horizontal groove c1 and can slide back and forth within the groove, thereby guiding the movement of the handle assembly 104. The oblique groove c2 is used to insert the drive shaft 70. The horizontal groove c1 is relatively short. This technique aims to ensure that the hook b3 of the locking member 105 can be accurately inserted into the corresponding stop groove 13 to achieve a reliable locking function. The extension direction of the horizontal groove c1 is consistent with the movement direction of the handle assembly 104, ensuring smooth and precise operation.

[0051] like Figure 14 As shown, the locking member 105 consists of a first shaft portion b1, a second shaft portion b2, and a hook portion b3. The first shaft portion b1 has a first shaft hole b11, and the second shaft portion b2 has a second shaft hole b21. The locking member 105 is installed in the cavity between the two second sidewalls 32 of the drive unit 30. The front guide shaft 60 passes sequentially through the first shaft hole b11 of the locking member 105, the horizontal groove c1 of the drive unit 30, and the front guide groove h1 of the U-shaped rotating frame 103. When unlocking or locking is required, the first shaft portion b1 of the locking member 105 will pitch and rotate around the front guide shaft 60, thereby driving the hook portion b3 to insert or retract into the stop groove 13 and the limiting groove 20, realizing the locking and unlocking functions. More specific locking and unlocking techniques will be described below.

[0052] A drive shaft 70 passes through both the second shaft hole b21 of the locking member 105 and the inclined groove c2 of the drive part 30. The inclined groove c2 is an inclined channel with a certain inclination angle (e.g., 30°-60°), and its main function is to convert the linear motion of the handle assembly 104 into the rotational motion of the locking member 105. The inclination angle of the inclined groove c2 determines the magnitude and direction of the horizontal component force generated when the drive shaft 70 slides in the groove. This horizontal component force is key to pushing the locking member 105 to rotate around the first shaft b1.

[0053] When the handle assembly 104 is stationary, the drive shaft 70 is located in the preset position of the inclined groove c2, and the hook b3 of the locking member 105 is inserted into the stop groove 13 or the limiting groove 20 to achieve the locking function. When the user pulls the handle part 50 outward, the handle assembly 104 moves outward as a whole. The drive shaft 70 is connected to the locking member 105, and the locking member 105 is located in the cavity of the handle assembly 104. The drive shaft 70 slides in the inclined groove c2 as the handle assembly 104 moves.

[0054] like Figures 3 to 6 , Figure 9As shown, during actual operation, when the locking member 105 rotates, its hook b3 will disengage from the gear position groove 13 or the limiting groove 20, thereby unlocking the rotation function. When the user releases the handle part 50, the return spring s pulls the handle assembly 104 back to its original position, the drive shaft 70 slides in the opposite direction in the inclined groove c2, and the locking member 105 rotates in the opposite direction around the first shaft part b1 under the action of the return spring, and the hook b3 re-inserts into the gear position groove 13 or the limiting groove 20, realizing the locking function.

[0055] In other words, the drive shaft 70 passes through both the second shaft hole b21 of the locking member 105 and the inclined groove c2 of the drive part 30. When the handle part 50 is pulled outward, the drive shaft 70 slides within the inclined groove c2. Due to the inclination angle of the inclined groove c2, the drive shaft 70 generates a horizontal component force, pushing the locking member 105 to pitch and rotate around the first shaft part b1. This rotation allows the hook part b3 of the locking member 105 to disengage from or insert into the stop groove 13 and the limiting groove 20, thereby achieving the locking or unlocking function. When the user releases the handle part 50, the return spring s pulls the handle assembly 104 back to its original position, the drive shaft 70 slides in the opposite direction, and the locking member 105 rotates in the opposite direction under the action of the return spring, returning to the initial locked state.

[0056] In the first state, the hook b3 of the locking member 105 passes through one of the stop slots 13 of the U-shaped rotating frame 103 and extends into the limiting slot 20 of the base 101, thereby locking the rotation of the chair body 102 relative to the base 101.

[0057] When the handle assembly 104 is pulled a certain distance, the drive shaft 70 slides in the inclined groove c2, causing the locking member 105 to rotate around the first shaft b1. With this rotation, the hook b3 disengages from the limiting groove 20 of the base 101 and the stop groove 13 of the U-shaped rotating frame 103, thereby releasing the rotation lock and entering the second state.

[0058] Furthermore, in the second state, continuing to pull the handle assembly 104 forward can achieve the following two operations:

[0059] In the first configuration, the chair body 102 can slide relative to the base 101, thereby adjusting the tilt angle. In this configuration, the front guide shaft 60 slides within the front guide groove h1, guiding the movement trajectory of the chair body 102 and ensuring a smooth and precise adjustment process.

[0060] Additionally, the seat body 102 can be rotated to align the U-shaped rotating frame 103 with the next limiting slot 20 on the base 101, thus completing the rotation. This ability to flexibly switch between tilt angle adjustment and rotation operation in a second state is the core technical effect of this solution. Users can flexibly choose between tilt angle adjustment or rotation operation as needed. This technology allows users to easily rotate the seat body at any tilt angle without first adjusting to a specific angle, greatly improving operational flexibility. It not only enhances the convenience and flexibility of using child safety seats but also significantly improves the product's practicality and user experience.

[0061] like Figure 8 As shown, the back of the chair body 102 is equipped with a front fixing bracket 14 and a rear guide block 15. (As indicated...) Figure 13 As shown, the front fixing frame 14 adopts a U-shaped metal structure, denoted as U-shaped metal frame k, and its bottom is firmly connected to the back of the chair body 102. Figure 9 As shown, shaft holes k1 are respectively opened on the two arms of the U-shaped metal frame k, and the front guide shaft 60 is installed in these shaft holes k1, thereby realizing a stable connection between the front guide shaft 60 and the chair body 102.

[0062] Preferably, such as Figure 15 As shown, the rear guide block 15 includes a neck 151 and a limiting portion 152. The neck 151 is located within the rear guide groove h2, and the limiting portion 152 is located on the rear side of the rear guide groove h2. The cooperation between the neck 151 and the rear guide groove h2 ensures that the chair body 102 can move smoothly along a predetermined trajectory when adjusting the tilt angle, providing precise guidance. Moreover, by designing the rear guide block 15 to include the neck 151 and the limiting portion 152, the overall structural strength is enhanced.

[0063] In addition, the structural design of the neck 151 and the restraint 152 ensures that the rear guide block 15 provides guidance and restraint functions without adding extra space, maintaining the overall compactness of the child safety seat.

[0064] Preferably, such as Figure 2 and Figure 12 As shown, the base 101 has four limiting grooves arranged in a ring and evenly spaced at 90-degree intervals. This enables precise positioning of the chair body 102 at four key angles: 0 degrees, 90 degrees, 180 degrees, and 270 degrees. This multi-angle positioning function meets the needs of different scenarios, such as facilitating childcare and adjusting the seating direction inside a vehicle.

[0065] Preferably, the U-shaped rotating frame 103 has a forward-curved portion 16 at its front end and a backward-curved portion 17 at its rear end, both of which are lower than the main body of the U-shaped rotating frame 103. The base 101 has a front pressing portion 18 on its front side and a rear pressing portion 19 on its rear side. The front pressing portion 18 and the rear pressing portion 19 respectively press down on the forward-curved portion 16 and the backward-curved portion 17 of the U-shaped rotating frame 103, providing a limiting and stabilizing function. Correspondingly, the base 101 has an annular groove r that matches the forward-curved portion 16 and the backward-curved portion 17.

[0066] In actual operation, the U-shaped rotating frame 103 is inserted into the base 101 through the area of ​​the annular groove r where the front pressure part 18 and the rear pressure part 19 are not provided. Due to the presence of the front tilting part 16 and the rear tilting part 17, the U-shaped rotating frame 103 can rotate smoothly within the annular groove r.

[0067] Furthermore, it should be noted that there are two return springs (s). One end of the return spring (s) is connected to the base 101, and the other end is connected to the side of the main body 40 of the handle assembly 104. When the user operates the handle assembly 104 to complete the locking or unlocking action, the return spring (s) can automatically pull the handle assembly 104 back to its initial position, without requiring manual reset by the user. This automatic reset function greatly improves the convenience and efficiency of operation and reduces the cumbersome steps for the user during use.

[0068] Preferably, such as Figure 7 As shown, the back of the chair body 102 has a groove p1 for mounting the handle assembly 104. The main body 40 of the handle assembly 104 has a guide groove p2, and the back of the chair body 102 has a guide post p3. When the handle assembly 104 moves relative to the chair body 102, the guide post p3 can slide within the guide groove p2, thereby ensuring that the movement of the handle assembly 104 is smooth and accurate.

[0069] More preferably, the inclination angle of the inclined groove c2 is 30°-60°. This angle range is carefully set to ensure that the force required by the user when pulling the handle assembly 104 is moderate. It avoids requiring excessive force due to an excessively small angle, and also avoids excessively long operating strokes due to an excessively large angle, thereby optimizing the convenience and comfort of operation. Furthermore, the sliding stroke of the drive shaft 70 within the inclined groove c2 is 10-20mm. This stroke range ensures that the locking element 105 can accurately complete the transition from locking to unlocking, while avoiding unnecessary excessive strokes, improving the accuracy and efficiency of operation.

[0070] Furthermore, the mating surfaces of the hook b3 of the locking member 105 with the gear slot 13 and the limiting slot 20 are designed as bevels, allowing the hook b3 to smoothly insert into or disengage from the gear slot 13 and the limiting slot 20, thereby improving the efficiency and reliability of locking and unlocking. This technical approach improves the efficiency of locking and unlocking, reduces the risk of failure due to friction or resistance, and enhances the stability and reliability of the product. At the same time, the smooth locking and unlocking action also improves the user's operating experience.

[0071] 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.

[0072] This paper describes the integrated tilt and rotation mechanism of the child safety seat provided by this utility model. Specific examples are used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An integrated mechanism for the tilt and rotation of a child safety seat, characterized in that: It includes a base, a chair body, a U-shaped rotating frame, a handle assembly, and a locking component; the U-shaped rotating frame is connected to the center of the base via a central axis; the center of the base is provided with multiple circumferentially distributed limiting grooves. The U-shaped rotating frame includes a bottom wall and two first side walls. The front section of the two first side walls is provided with a pair of parallel front guide grooves, and the rear end of the bottom wall is provided with a rear guide groove. The bottom wall corresponding to the front guide groove is provided with a plurality of stop grooves distributed along the length direction. The handle assembly includes an integral drive unit, a main body, and a handle unit. The drive unit includes two second sidewalls, with a horizontal groove and an oblique groove provided between the two second sidewalls. A front guide shaft is installed on the back of the chair. The locking component includes a first shaft portion having a first shaft hole, a second shaft portion having a second shaft hole, and a hook portion. The locking element is located in the cavity between the two second side walls of the drive unit; the front guide shaft passes through the first shaft hole of the locking element, the horizontal groove of the drive unit, and the front guide groove of the U-shaped rotating frame; a drive shaft passes through the second shaft hole of the locking element and the oblique groove of the drive unit. In the first state, the hook of the locking member passes through one of the stop slots of the U-shaped rotating frame and extends into the limiting slot of the base. At this time, the rotation of the chair body relative to the base is locked. When the handle assembly is pulled to move a certain distance, the drive shaft slides in the inclined slot of the handle assembly, causing the locking member to rotate around the first shaft. The hook of the locking member rotates away from the limiting slot of the base and the stop slot of the U-shaped rotating frame, and the rotation lock is released. At this time, it is in the second state.

2. The integrated tilt and rotation mechanism of the child safety seat according to claim 1, characterized in that: In the second state, by continuing to pull the handle assembly forward, the chair body can slide relative to the base to adjust the tilt angle, and the front guide shaft slides within the front guide groove; or in the second state, the chair body can be rotated so that the U-shaped rotating frame corresponds to the next limiting groove on the base.

3. The integrated tilt and rotation mechanism of the child safety seat according to claim 1, characterized in that: A front fixing frame and a rear guide block are installed on the bottom of the chair back. The front guide shaft is installed on the front fixing frame. The rear guide block includes a neck and a limiting part. The neck is located in the rear guide groove and the limiting part is located on the rear side of the rear guide groove. The front fixing frame is a U-shaped metal frame. The bottom of the U-shaped metal frame is connected to the back of the chair body. Shaft holes are opened on the two arms of the U-shaped metal frame, and the front guide shaft passes through the shaft holes.

4. The integrated tilt and rotation mechanism of the child safety seat according to claim 1, characterized in that: Four limiting grooves are evenly arranged around the base at 90-degree intervals.

5. The integrated tilt and rotation mechanism of the child safety seat according to claim 1, characterized in that: The U-shaped rotating frame has a front tilted part at the front end and a rear tilted part at the rear end; the front tilted part and the rear tilted part are lower than the U-shaped rotating frame, the rear side of the base has a rear pressing part, and the front side of the base has a front pressing part; the front pressing part presses down on the front tilted part, and the rear pressing part presses down on the rear tilted part; Correspondingly, the base is provided with annular grooves corresponding to the front and rear upturned portions.

6. The integrated tilt and rotation structure of the child safety seat according to claim 1, characterized in that: It also includes two return springs, one end of which is connected to the base and the other end of which is connected to the side of the main body of the handle assembly.

7. The integrated tilt and rotation structure of the child safety seat according to claim 1, characterized in that: The back of the chair body is provided with a groove for installing a handle assembly; the main body of the handle assembly is provided with a guide groove, and the back of the chair is provided with a guide post. When the handle assembly moves relative to the chair body, the guide post can move within the guide groove.

8. The integrated tilt and rotation mechanism of the child safety seat according to claim 1, characterized in that: The inclination angle of the inclined groove is 30°-60°, and the sliding stroke of the drive shaft in the inclined groove is 10-20mm.

9. The integrated tilt and rotation mechanism of the child safety seat according to claim 1, characterized in that: The horizontal groove extends in the same direction as the handle assembly.

10. The integrated tilt and rotation mechanism of the child safety seat according to claim 1, characterized in that: The hook of the locking member has a beveled surface that mates with the gear slot and the limiting slot, so that the hook can be inserted into or removed from the gear slot and the limiting slot more smoothly.

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