Child safety seat with both reclining and rotational control and method of controlling the same

Abstract

The application provides a child safety seat with both inclination angle adjustment and rotation control and a control method thereof. The bottom of the seat is provided with a metal frame rotatably connected to the base and an operation handle. The metal frame is provided with a gear slot. The operation handle controls the gear shaft to move in the first sliding track slot, so that the gear shaft is in the first state of being located in the gear slot and the second state of being located in the continuous slot. The base is provided with a locking slot, and the metal frame is provided with a locking block that can protrude and retract. The locking block has a control lever. The operation handle controls the control lever to move in the second sliding track slot to control the locking block to protrude or retract the metal frame. When the gear shaft is displaced along the length direction in the continuous slot, the control lever is simultaneously displaced along the length direction in the second sliding track slot. The inclination angle adjustment mechanism and the rotation control mechanism are highly integrated, and the seat body rotation control is supported under different inclination angles.

Description

Technical Field

[0001] This invention relates to the technical field of child safety seats, and more particularly to a child safety seat with tilt and rotation control, wherein the seat body can be tilted relative to the base, and the seat body can rotate and lock relative to the base at different tilt angles relative to the base. Background Technology

[0002] A child safety seat consists of a base and a seat body. The base is fixed to the vehicle seat, and the seat body is mounted on the base. Most existing child safety seats can rotate the seat body relative to the base to change the seat's orientation, and the seat body's tilt angle can be adjusted relative to the base.

[0003] For example, utility model patent CN211943043U discloses a child safety seat with adjustable tilt and rotation angles, including a seat body, a gear adjustment component, a rotation limiting component, a rotating disc, and a base. The seat body has an integrally injection-molded nylon guide rail with a metal slider mounted on it to limit the movement trajectory of the seat body's tilt angle and constrain the seat body and rotating disc. The gear adjustment component is located at the bottom of the seat body and is fixed to the corresponding angle hole on the rotating disc via a gear pin, allowing adjustment of the seat body's tilt angle relative to the base. The rotating disc is embedded inside the base and fixedly connected to the metal slider, limiting the movement trajectory of the seat body's rotation angle; the seat body rotates along the rotating disc.

[0004] However, the tilt adjustment mechanism and rotation control mechanism of this type of child safety seat are set up relatively independently. Not only is the operation of adjustment and control more complicated and cannot be done in one step, but the whole mechanism is also very complex, requiring high-end manufacturing equipment and processes, and complicated assembly, which increases production costs.

[0005] To this end, for example, the invention patent with publication number CN112440840A discloses a child safety seat, which includes an operating handle for switching the locking and unlocking components from a locked state to an unlocked state. In the locked state, the rotating component, the base, and the seat body are relatively fixed. When switching to the unlocked state by operating the handle, the fore-and-aft tilt angle of the seat body relative to the base and the rotation angle around a preset axis are both adjustable. The applicant has also developed an integrated adjustment mechanism for seat rotation and tilt angle, as described in the invention patent application with publication number CN109532586A.

[0006] However, this creates a technical contradiction: on the one hand, to achieve pitch angle adjustment and rotation control in one step, the two sets of mechanisms need to be unlocked and locked synchronously, and the actions of the pitch angle adjustment mechanism and the rotation control mechanism must not interfere with each other. This requires the integration of the two locking mechanisms and the relative independence of the action mechanisms, which inevitably leads to the complexity of the mechanism. On the other hand, in order to pursue the simplicity of the mechanical structure, the lightweighting of the safety seat and the reduction of manufacturing costs, the two sets of mechanisms need to be highly integrated to achieve efficient linkage between components through simple assembly relationships.

[0007] This technical contradiction is difficult to overcome, and most existing child safety seat designs have to abandon one side of the balance. For example, in the mechanism disclosed in the two existing invention patents mentioned above, the seat can only rotate relative to the base in one tilt angle adjustment position. If the seat can only rotate in an upright position, it will wake up a sleeping child. If the seat can only rotate in a tilted position, it requires a relatively large rotation space, which presents a contradiction of insufficient space for compact vehicles. Summary of the Invention

[0008] Based on the technical contradictions faced by existing child safety seats in integrating tilt angle adjustment and rotation control mechanisms, it is difficult to achieve rotation control at multiple tilt angles while simplifying the mechanism integration. This invention provides a child safety seat and its control method that combine tilt angle adjustment and rotation control. It not only achieves a high degree of integration and linkage between the two mechanisms and a highly simplified structure, but also enables rotation control of the seat in both upright and tilted states.

[0009] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a child safety seat with both tilt angle adjustment and rotation control, including a base and a seat body, wherein the base is used to be installed on a vehicle seat; the seat body includes a backrest and a seat, wherein the seat is used to be installed on the base;

[0010] The bottom of the chair seat is provided with a metal frame extending along the length of the chair body. A rotating shaft is provided on the metal frame, and the rotating shaft is rotatably connected to the center of the base so that the chair body can rotate relative to the base. The chair body can slide relative to the metal frame along the length direction to adjust the tilt angle of the chair body.

[0011] The metal frame is provided with three gear slots, which are connected by a connecting groove; a gear shaft passes through each gear slot, and the gear shaft enters any of the gear slots to keep the chair body at the corresponding tilt angle; the gear shaft switches between the three gear slots through the connecting groove.

[0012] The bottom of the chair seat is also provided with a control handle, which includes a control part arranged parallel to the metal frame and a handle part for operating the control handle;

[0013] The control unit is provided with a first sliding track groove, and the gear shaft can move within the first sliding track groove; the control handle can be in a first state where the gear shaft is located within the gear groove and a second state where the gear shaft is located within the connecting groove; the control handle switches between the first state and the second state, and the gear shaft moves within the first sliding track groove to control the gear shaft to move between the gear groove and the connecting groove.

[0014] The base is provided with at least two locking slots, and each locking slot is distributed on the same circumference with the center of the base as the center;

[0015] The metal frame is provided with a locking block that can protrude and retract, and the locking block has a control lever; the control part is provided with a second sliding track groove, and the control lever passes through the second sliding track groove; the control handle controls the control lever to move within the second sliding track groove, so as to control the locking block to protrude or retract from the metal frame;

[0016] The second sliding track groove includes, in sequence, a first inclined groove, a transition groove, a horizontal groove, and a second inclined groove connected end to end; the high end of the first inclined groove and the high end of the transition groove are connected to form an inverted V shape, the first inclined groove and the second inclined groove are arranged in parallel, and the horizontal groove connects the low end of the transition groove and the low end of the second inclined groove.

[0017] When the control lever is located at the lower end of the first inclined groove, or the lower end of the transition groove, the lower end of the second inclined groove, or the horizontal groove, the locking block protrudes from the metal frame and is embedded in the locking groove, locking the chair body onto the base in a certain orientation.

[0018] When the control lever is located at the high end of the first inclined groove, or the high end of the transition groove, or the high end of the second inclined groove, the locking block retracts into the metal frame and disengages from the locking groove, and the chair body can rotate relative to the base.

[0019] When the gear shift shaft is displaced along the length direction within the continuous groove, the control lever is simultaneously displaced along the length direction within the second sliding track groove.

[0020] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problem is: the first sliding track groove is inclined, and its inclination direction is consistent with the first inclined groove and the second inclined groove;

[0021] The lower end of the first sliding track groove has a laterally extending limiting part;

[0022] When the control handle is in the first state, the gear shaft is restricted within the restricting part so as to be simultaneously restricted within the gear slot;

[0023] When the control handle is in the second state, the gear shaft moves to the high end of the first sliding track groove to enter the connecting groove and can move within the connecting groove.

[0024] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the three gear slots include a first gear slot, a second gear slot, and a third gear slot;

[0025] When the gear shift shaft is located in the first gear shift groove, the chair body is in an upright state relative to the base. When the gear shift shaft is located in the second gear shift groove, the chair body is in an intermediate state relative to the base. When the gear shift shaft is located in the third gear shift groove, the chair body is in a supine state relative to the base.

[0026] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the three gear slots include a first gear slot, a second gear slot and a third gear slot arranged in sequence;

[0027] The arrangement direction of the first gear slot, the second gear slot, and the third gear slot is opposite to the arrangement direction of the first inclined slot, the transition slot, the horizontal slot, and the second inclined slot.

[0028] When the gear shaft is located in the first gear slot, the control lever is located at the lower end of the first inclined slot;

[0029] When the gear shaft is located in the second gear slot, the control lever is located at the lower end of the transition slot;

[0030] When the gear shaft is located in the third gear slot, the control lever is located at the lower end of the second inclined slot;

[0031] The gear shift shaft enters the connecting groove from the first gear shift groove, the lower end of the first inclined groove of the control lever moves to the higher end of the first inclined groove, the locking block retracts into the metal frame and disengages from the locking groove, and the chair body can rotate relative to the base.

[0032] The gear shift shaft enters the connecting groove from the third gear shift groove, the lower end of the second inclined groove of the control lever moves to the higher end of the second inclined groove, the locking block retracts into the metal frame and disengages from the locking groove, and the chair body can rotate relative to the base.

[0033] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problem is: the slope of the transition groove in the length direction of the second sliding track groove is greater than that of the first inclined groove or the second inclined groove.

[0034] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problem is as follows: there are four locking slots, and the four locking slots are distributed at 90-degree positions within the circumference.

[0035] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the control handle has two parallel and symmetrically arranged control parts; the handle part is located at the front end of the bottom of the chair seat, and the two control parts are respectively located on both sides of the handle part; the metal frame is arranged in parallel between the two control parts.

[0036] A spring is provided between the ends of the two control parts and the bottom of the seat; when the control handle is in the first state, the spring is in the naturally tightened state; when the handle is pulled forward, the control handle is in the second state, and the spring is stretched; when the handle is released, the control handle returns to the first state under the tension of the spring.

[0037] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the metal frame is an arc-shaped structure that matches the shape of the chair seat; an arc-shaped guide groove is provided on the metal frame; a guide strip is provided at the bottom of the chair seat, and the guide strip passes through the guide groove to guide the adjustment of the tilt angle of the chair body.

[0038] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the metal frame is provided with a longitudinal groove, and the control lever passes through both the groove and the second sliding track groove; the control handle controls the control lever to move within the second sliding track groove, thereby driving the control lever to move longitudinally within the groove, so as to control the locking block to protrude or retract into the metal frame.

[0039] Another technical solution adopted by the present invention to solve the above-mentioned technical problems is: a method for adjusting the pitch angle and controlling the rotation of a child safety seat.

[0040] Its controlled object is a child safety seat that combines tilt and rotation control, including a base and a seat body, the seat body including a backrest and a seat, the seat being mounted on the base;

[0041] The bottom of the chair seat is provided with a metal frame extending along the length of the chair body. A rotating shaft is provided on the metal frame, and the rotating shaft is rotatably connected to the center of the base so that the chair body can rotate relative to the base.

[0042] The metal frame is provided with three gear slots in sequence, including a first gear slot, a second gear slot and a third gear slot; the three gear slots are connected by a connecting slot; a gear shaft passes through the gear slot;

[0043] The bottom of the chair seat is also provided with a control handle, which includes a control part arranged parallel to the metal frame and a handle part for operating the control handle;

[0044] The control unit is provided with an inclined first sliding track groove, and the gear shaft is located in the first sliding track groove.

[0045] The base is provided with at least two locking slots, and each locking slot is distributed on the same circumference with the center of the base as the center;

[0046] The metal frame is provided with a locking block that can protrude and retract, and the locking block has a control lever; the control part is provided with a second sliding track groove, and the control lever passes through the second sliding track groove;

[0047] The second sliding track groove includes, in sequence, a first inclined groove, a transition groove, a horizontal groove, and a second inclined groove connected end to end; the high end of the first inclined groove and the high end of the transition groove are connected to form an inverted V shape, and the horizontal groove connects the low end of the transition groove and the low end of the second inclined groove.

[0048] The first sliding track groove, the first inclined groove, and the second inclined groove have the same inclination direction;

[0049] It includes the following specific steps:

[0050] In the initial state, the control handle is in the first state; when the gear shaft is located in the first gear slot and at the lower end of the first sliding track slot, the chair body is in an upright state relative to the base; the control lever is located at the lower end of the first inclined slot, and the locking block protrudes from the metal frame and is embedded in any of the locking slots, locking the chair body to the base in a certain orientation;

[0051] Step S01: Pull the handle of the control lever to bring it to the second state. The control unit drives the gear shaft to move from the low end of the first sliding track groove to the high end of the first sliding track groove, so that the gear shaft leaves the first gear groove and enters the continuous groove. At the same time, the control unit drives the control lever to move from the low end of the first inclined groove to the high end of the first inclined groove, so that the locking block retracts into the metal frame and disengages from the locking groove.

[0052] If it is necessary to adjust the orientation of the chair, then proceed to step S11;

[0053] If it is necessary to adjust the tilt angle of the chair to the middle position, then proceed to step S12;

[0054] If it is necessary to adjust the tilt angle of the chair to a supine position, then proceed to step S13;

[0055] Step S12: Adjust the chair body to slide relative to the metal frame along the length direction, the gear shaft moves along the continuous groove towards the second gear groove, and at the same time, the control lever enters the horizontal groove through the transition groove to drive the locking block to protrude out of the metal frame and embed into the locking groove;

[0056] When the gear shaft reaches the junction of the connecting groove and the second gear groove, the handle of the control lever is released to return it to the first state. The control unit drives the gear shaft from the high end of the first sliding track groove to the low end of the first sliding track groove so that the gear shaft enters the second gear groove. At the same time, the control unit drives the control lever to move to the low end of the transition groove.

[0057] At this time, the chair body is in an intermediate state relative to the base and is locked to the base in a certain orientation;

[0058] Step S13: Adjust the chair body to slide relative to the metal frame along the length direction, the gear shaft moves along the continuous groove towards the third gear groove, and at the same time, the control lever enters the horizontal groove through the transition groove to drive the locking block to protrude out of the metal frame and embed into the locking groove;

[0059] The control lever continues to move along the horizontal groove toward the second inclined groove. When the gear shaft reaches the junction of the connecting groove and the third gear groove, the control lever moves to the high end of the second inclined groove to drive the locking block to retract into the metal frame and disengage from the locking groove.

[0060] Release the handle of the control lever to return it to the first state. The control unit drives the gear shaft to move from the high end of the first sliding track groove to the low end of the first sliding track groove, so that the gear shaft enters the third gear groove. At the same time, the control unit drives the control lever to move to the low end of the second inclined groove, so that the locking block protrudes from the metal frame and is embedded in the locking groove.

[0061] At this time, the chair body is in a supine position relative to the base and is locked to the base in a certain orientation;

[0062] If it is necessary to adjust the orientation of the chair, then proceed to step S33;

[0063] Step S11: Rotate the chair body to change its orientation, and align the locking block with the locking groove on the base corresponding to the orientation; release the handle of the control handle to return it to the first state, and the control part drives the control lever to move to the lower end of the first inclined groove, so as to drive the locking block to protrude from the metal frame and embed into the locking groove;

[0064] At this time, the chair body is in an upright position relative to the base and is locked to the base in a certain orientation;

[0065] Step S33: Pull the handle of the control handle to bring it to the second state. The control part drives the control lever to move from the lower end of the second inclined groove to the higher end of the second inclined groove, so as to drive the locking block to retract into the metal frame and disengage from the locking groove.

[0066] Rotate the chair body to change its orientation, and align the locking block with the locking groove on the base corresponding to that orientation; release the handle of the control handle to return it to the first state, and the control part drives the control lever to move to the lower end of the second inclined groove, so that the locking block protrudes from the metal frame and is embedded in the locking groove;

[0067] At this time, the chair body is in a supine position relative to the base and is locked to the base in a certain orientation.

[0068] Another preferred technical solution adopted by the present invention to solve the above-mentioned technical problem is: a spring is provided between the end of the control part and the bottom of the seat; the control handle is in a first state and the spring is in a naturally tightened state; the handle of the control handle is pulled to the second state, and the spring is stretched; the handle of the control handle is released, and the control handle returns to the first state under the action of the spring's tightening stress.

[0069] Another preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is: the first gear slot, the second gear slot and the third gear slot are arranged in sequence, and the arrangement direction of the first inclined slot, the transition slot, the horizontal slot and the second inclined slot is opposite to the arrangement direction of the first gear slot, the second gear slot and the third gear slot.

[0070] The component of the displacement vector of the gear shift shaft in the gear shift groove or the continuous groove along the length direction is opposite to the component of the displacement vector of the control lever in the second sliding track groove along the length direction.

[0071] Compared with the prior art, the advantages of the present invention are: through the linkage between the metal frame and the control handle, especially the unique zigzag structure of the second sliding track groove on the control part, the tilt angle adjustment mechanism and the rotation control mechanism are highly integrated, and the component structure is simple. It does not require a complex linkage device or an automated control device, and can realize the seat body to rotate and change orientation at different tilt angle positions. This makes the child safety seat itself lightweight, reduces manufacturing costs and selling price, and makes it easier for users to install and use.

[0072] From a user experience perspective, the second inclined groove in the second sliding track allows the seat to change orientation when lying down, as the seat can rotate and change orientation at different tilt angles. This meets the needs of parents caring for children without affecting the children's sleep and rest. Furthermore, the addition of an inverted V-shaped transition groove and a first inclined groove on the front side of the horizontal groove allows the seat to change orientation when upright, solving the problem of narrow interior space making it difficult to turn.

[0073] Furthermore, the ingenious assembly relationship between the two sets of components, the pitch angle adjustment mechanism and the rotation control mechanism, enables efficient linkage. The two mechanisms do not affect each other when they are in motion. This overcomes the technical problems of existing technologies that use ropes or wires to achieve linkage, which can lead to ropes or wires getting tangled or obstructing each other during pitch angle adjustment and rotation. Attached Figure Description

[0074] 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 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.

[0075] Figure 1 Schematic diagram of a child safety seat that combines tilt adjustment and swivel control. Figure 1 ;

[0076] Figure 2 This is a schematic diagram of the base structure;

[0077] Figure 3 This is a structural diagram of the base and metal frame;

[0078] Figure 4 Schematic diagram of a child safety seat that combines tilt adjustment and swivel control. Figure 2 ;

[0079] Figure 5 Schematic diagram of a child safety seat that combines tilt adjustment and swivel control. Figure 3 ;

[0080] Figure 6 Schematic diagram of a child safety seat that combines tilt adjustment and swivel control. Figure 4 ;

[0081] Figure 7 A schematic diagram of the structure of the base, metal frame, and control handle. Figure 1 ;

[0082] Figure 8 A schematic diagram of the structure of the base, metal frame, and control handle. Figure 2 ;

[0083] Figure 9 A schematic diagram of the structure of the base, metal frame, and control handle. Figure 3 ;

[0084] Figure 10 A schematic diagram of the structure of the base, metal frame, and control handle. Figure 4 . Detailed Implementation

[0085] 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 the invention.

[0086] In the description of this invention, it should be noted that the terms "upper," "lower," "front," "rear," "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 invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and should not be considered as limitations on this invention.

[0087] like Figure 1 The child safety seat 100 provided in this embodiment has both tilt angle adjustment and rotation control, including a base 101 and a seat body 102. The base 101 is used to be installed on a vehicle seat, and the seat body 102 includes a backrest 103 and a seat 104, which is used to be installed on the base 101.

[0088] like Figure 2 and Figure 3 Combination Figure 4As shown, the upper surface of the base 101 has a rotating hole S2 at its center and four locking slots L2 around its perimeter. The four locking slots L2 are distributed at 90-degree angles on the same circumference with the rotating hole S2 as the center. The bottom of the chair seat 104 has a metal frame 10 extending along the length of the chair body 102, and a rotating shaft S1 is provided on the metal frame 10. The rotating shaft S1 passes through the rotating hole S2, so that the rotating shaft S1 is rotatably connected to the center of the base 101, allowing the chair body 102 to rotate relative to the base 101 to change the orientation of the chair body 102.

[0089] like Figures 4 to 6 As shown, a sliding groove 104C is provided at the bottom of the seat 104 along the length direction. The metal frame 10 is disposed in the sliding groove 104C and can slide along the sliding groove C. That is, the chair body 102 can slide relative to the metal frame 10 along the length direction, thereby adjusting the tilt angle of the chair body 102.

[0090] like Figure 3 and Figure 4 As shown, in this embodiment, the metal frame 10 has three sequentially arranged gear slots 11, which are, from back to front, the first gear slot 11a, the second gear slot 11b, and the third gear slot 11c. The three gear slots 11 are connected by a connecting slot 12. A gear shaft D passes through the gear slot 11. The bottom of the seat 104 is fixed to the two sides of the metal frame 10 with gear shaft fixing seats D1. A gear shaft sliding groove D2 is longitudinally opened on the gear shaft fixing seat D1, and the gear shaft D is confined within the gear shaft sliding groove D2.

[0091] Therefore, the gear shift shaft D can only move longitudinally relative to the seat 104, while the seat 104 can slide along the length direction relative to the metal frame 10. Thus, the gear shift shaft D can enter any gear shift slot 11 longitudinally to keep the chair body 102 at the corresponding pitch angle of the gear shift slot 11, or it can leave the gear shift slot 11 longitudinally and enter the connecting slot 12, and move along the length direction in the connecting slot 12 as the seat 104 slides relative to the metal frame 10, thereby switching between the three gear shift slots 11 through the connecting slot 12.

[0092] Based on the arrangement of the three gear slots 11 in this embodiment, when the gear shaft D is located in the first gear slot 11a, the chair body 102 is in an upright state relative to the base 101. When the gear shaft D is located in the second gear slot 11b, the chair body 102 is in an intermediate state between the upright state and the reclining state relative to the base 101. When the gear shaft D is located in the third gear slot 11c, the chair body 102 is in a reclining state relative to the base 101.

[0093] like Figure 1 Combination Figures 4 to 9As shown, the bottom of the seat 104 is also provided with a control handle 20. The control handle 20 includes a control part 21 arranged parallel to the metal frame 10 and a handle part 22 for operating the control handle 20. The handle part 22 is located at the front end of the bottom of the seat 104. When the chair body 102 is installed on the base 101, the handle part 22 can be pulled from the bottom front end of the seat 104 to operate the control handle 20, causing a relative displacement between the control part 21 and the metal frame 10 along the length direction, thereby adjusting the tilt angle and orientation of the chair body 102.

[0094] like Figures 7 to 9 As shown, the control unit 21 is provided with a first sliding track groove 30. The end of the gear shaft D passes through the first sliding track groove 30 and can move within it. The first sliding track groove 30 is inclined, with the inclination direction from front to back and from the lower end 30L to the higher end 30H. This matches the relative positions of the gear slots 11 and the connecting groove 12 on the metal frame 10 in this embodiment, that is, in this embodiment, the three gear slots 11 are located below the connecting groove 12.

[0095] Therefore, the control handle 20 is in the position of... Figure 7 In the first state shown, the gear shift shaft D is located within the gear shift groove 11 and simultaneously at the lower end 30L of the first sliding track groove 30. When the handle 22 is pulled forward, the control unit 21 moves forward relative to the metal frame 10, causing the gear shift shaft D to move along the first sliding track groove 30 towards the higher end 30H, thereby gradually moving the gear shift shaft D upward away from the gear shift groove 11 until the control handle 20 is in the position shown. Figure 9 In the second state shown, the gear shaft D is located in the connecting groove 12 and at the high end 30H of the first sliding track groove 30.

[0096] Thus, the control handle 20 switches between the first state and the second state, and the gear shaft D moves within the first sliding track groove 30 to control the gear shaft D to move between the gear groove 11 and the connecting groove 12.

[0097] like Figure 4 Combination Figures 7 to 10 As shown, the metal frame 10 is provided with a locking block L1 that can protrude and retract. When the locking block L1 protrudes from the metal frame 10 and is embedded in any locking groove L2, the chair body 102 is locked in the orientation corresponding to the locking groove L2. When the locking block L1 retracts into the metal frame 10 and disengages from the locking groove L2, the chair body 102 is unlocked and can rotate relative to the base 101 to change its orientation.

[0098] In other embodiments, more locking slots L2 can be arranged radially on the same circumference with the rotating hole S2 as the center on the base 101, so that the chair body 102 can be locked in more orientations. Of course, fewer locking slots L2 can also be arranged, such as two locking slots L2, one facing forward and the other facing the side seat.

[0099] The locking block L1 has a lever G. The metal frame 10 has a longitudinally arranged groove 13, and the control part 21 has a second sliding track groove 40. The lever G passes through both the groove 13 and the second sliding track groove 40. Thus, the lever G is restricted within the groove 13 and can only move longitudinally relative to the metal frame 10. When the handle part 22 is pulled and the tilt angle of the seat 104 is adjusted, a relative displacement occurs between the control part 21 and the metal frame 10 along the length direction. Therefore, the control handle 20 can control the lever G to move within the second sliding track groove 40, causing the lever G to move longitudinally within the groove 13, thereby controlling the locking block L1 to protrude or retract into the metal frame 10.

[0100] Specifically, such as Figure 7 As shown, the second sliding track groove 40 includes, from front to back, a first inclined groove 41, a transition groove 42, a horizontal groove 43, and a second inclined groove 44 connected end to end. The high end 41H of the first inclined groove 41 connects with the high end 42H of the transition groove 42 to form an inverted V shape, and the horizontal groove 43 connects the low end 42L of the transition groove 42 with the low end 44L of the second inclined groove 44.

[0101] The first inclined groove 41 and the second inclined groove 44 are arranged in parallel, and their inclination direction is from front to back and from the low end to the high end. This inclination direction is mainly based on the operating habits and is designed based on the cooperation relationship between the locking block L1, the control lever G, the slide groove 13, the control handle 20 and its second sliding track groove 40 in this embodiment. That is, when the orientation of the chair body 102 needs to be adjusted, the operation process of pulling the handle part 22, the locking block L1 retracting into the metal frame 10, and rotating the chair body 102 is achieved.

[0102] It should be noted that in this embodiment, due to the cooperation between the metal frame 10 and the control unit 21, the tilting directions of the first inclined groove 41, the second inclined groove 44 and the first sliding track groove 30 are consistent, but this does not mean that the tilting angle must also be consistent. This is because the tilting angle is constrained by two factors: the relative displacement of the metal frame 10 and the control unit 21 along the length direction and the longitudinal displacement of the gear shaft D and the control lever G. As long as the cooperation between the actions can be achieved, the tilting angle of the first sliding track groove 30 does not need to be consistent with the first inclined groove 41 and the second inclined groove 44.

[0103] As can be seen, the second sliding track groove 40 includes two high ends, namely the high end shared by the first inclined groove 41 and the transition groove 42, and the high end 44H of the second inclined groove 44. The rest of the second sliding track groove 40 is at the low ends, namely the low end 41L of the first inclined groove 41, the low end 42L of the transition groove 42, the low end 44L of the second inclined groove 44, and the horizontal groove 43. When the control lever G is located at the low end of the second sliding track groove 40, the control lever G is located at the low end of the slide groove 13, the locking block L1 protrudes from the metal frame 10 and is embedded in the locking groove L2, locking the chair body 102 onto the base 101 in a certain orientation; conversely, when the control lever G is located at the high end of the second sliding track groove 40, the control lever G is located at the high end of the slide groove 13, the locking block L1 retracts into the metal frame 10 and disengages from the locking groove L2, and the chair body 102 can rotate relative to the base 101, thereby adjusting the orientation of the chair body 102.

[0104] Due to the inclined structure of the first inclined groove 41 and the second inclined groove 44, when the control lever G is located at the low end 41L of the first inclined groove 41 or the low end 44L of the second inclined groove 44, when the handle part 22 is pulled forward, the control part 21 moves forward relative to the metal frame 10, causing the control lever G to move along the first inclined groove 41 to its high end 41H, or along the second inclined groove 44 to its high end 44H. Thus, the control lever G moves from the low end to the high end of the slide groove 13, causing the locking block L1 to retract into the metal frame 10 and disengage from the locking groove L2.

[0105] Therefore, the child safety seat 100 provided by the present invention, which combines tilt angle adjustment and rotation control, allows for displacement along the length direction between the metal frame 10 and the control unit 21, causing the gear shift shaft D to move along the length direction within the continuous groove 12 or switch between the three gear shift grooves 11. Simultaneously, the control lever G moves along the length direction within the second sliding track groove 40. Due to the zigzag structure of the second sliding track groove 40, the control locking block L1 protrudes or retracts into the metal frame 10. Thus, through the ingenious cooperation between the component structures, the tilt angle adjustment mechanism and the rotation control mechanism are highly integrated on the metal frame 10 and the control handle 20, and the seat body 102 can be rotated to change its orientation at different tilt angle positions.

[0106] The following section specifically uses the child safety seat 100, which combines pitch adjustment and rotation control, provided in this embodiment as the control object to describe in detail the pitch adjustment and rotation control method of the child safety seat provided by this invention, combined with... Figures 4 to 10 The illustrated process further explains the coordination relationship between various components during pitch angle adjustment and rotation control from a dynamic coordination perspective. Specifically, it includes the following steps:

[0107] like Figure 4 and Figure 7In the initial state shown, the control handle 20 is in the first state; the gear shaft D is located in the first gear groove 11a and at the lower end 30L of the first sliding track groove 30; the chair body 102 is in an upright state relative to the base 101; the control lever G is located at the lower end 41L of the first inclined groove 41; the locking block L1 protrudes from the metal frame 10 and is embedded in any locking groove L2, locking the chair body 102 to the base 101 in a certain orientation;

[0108] Step S01: Pull the handle 22 of the control handle 20 to bring it to the second state. The control unit 21 drives the gear shaft D from the low end 30L of the first sliding track groove 30 to the high end 30H of the first sliding track groove 30, so that the gear shaft D leaves the first gear groove 11a and enters the connecting groove 12. At the same time, the control unit 21 drives the control lever G from the low end 41L of the first inclined groove 41 to the high end 41H of the first inclined groove 41, so that the locking block L1 retracts into the metal frame 10 and disengages from the locking groove L2.

[0109] If it is necessary to adjust the orientation of the chair body 102, then proceed to step S11;

[0110] If it is necessary to adjust the tilt angle of the chair body 102 to the middle position, then proceed to step S12;

[0111] If it is necessary to adjust the tilt angle of the chair 102 to a supine position, then proceed to step S13;

[0112] Step S12: Adjust the chair body 102 to slide relative to the metal frame 10 along the length direction, and move the gear shaft D along the continuous groove 12 towards the second gear groove 11b. At the same time, the operating lever G enters the horizontal groove 43 through the transition groove 42 to drive the locking block L1 to protrude out of the metal frame 10 and embed into the locking groove L2.

[0113] When the gear shaft D reaches the junction of the connecting groove 12 and the second gear groove 11b, the handle 22 of the control handle 20 is released to return it to the first state. The control unit 21 drives the gear shaft D from the high end 30H of the first sliding track groove 30 to the low end 30L of the first sliding track groove 30, so that the gear shaft D enters the second gear groove 11b. At the same time, the control unit 21 drives the control lever G to move to the low end 42L of the transition groove 42.

[0114] At this time, as Figure 5 and Figure 8 As shown, the chair body 102 is in an intermediate state relative to the base 101 and is locked onto the base 101 in a certain orientation;

[0115] If it is necessary to adjust the tilt angle of the chair body 102 to an upright position, then proceed to step S21;

[0116] If it is necessary to adjust the tilt angle of the chair 102 to a supine position, then proceed to step S23;

[0117] Step S13: Adjust the chair body 102 to slide relative to the metal frame 10 along the length direction, and move the gear shaft D along the continuous groove 12 towards the third gear groove 11c. At the same time, the control lever G enters the horizontal groove 43 through the transition groove 42 to drive the locking block L1 to protrude out of the metal frame 10 and embed into the locking groove L2.

[0118] The control lever G continues to move along the horizontal groove 43 towards the second inclined groove 44, until the gear shaft D reaches the... Figure 9 When the connecting groove 12 and the third gear groove 11c are at the junction, the operating lever G moves to the high end 44H of the second inclined groove 44 so as to drive the locking block L1 to retract into the metal frame 10 and disengage from the locking groove L2.

[0119] If it is necessary to adjust the orientation of the chair body 102 at this time, then as follows Figure 10 The rotating chair body 102 is shown to change its orientation, and the locking block L1 is aligned with the locking groove L2 on the base 101 corresponding to that orientation;

[0120] Release the handle 22 of the control lever 20 to return it to the first state. The control unit 21 drives the gear shaft D to move from the high end 30H of the first sliding track groove 30 to the low end 30L of the first sliding track groove 30, so that the gear shaft D enters the third gear groove 11c. At the same time, the control unit 21 drives the control lever G to move to the low end 44L of the second inclined groove 44, so that the locking block L1 protrudes out of the metal frame 10 and is embedded in the locking groove L2.

[0121] At this time, as Figure 6 As shown, the chair body 102 is in a supine position relative to the base 101 and is locked onto the base 101 in a certain orientation;

[0122] If it is necessary to adjust the orientation of the chair body 102, then proceed to step S33;

[0123] If it is necessary to adjust the tilt angle of the chair body 102 to the middle position, then proceed to step S32;

[0124] If it is necessary to adjust the tilt angle of the chair 102 to an upright position, then proceed to step S31;

[0125] Step 21: Pull the handle 22 of the control handle 20 to bring it to the second state. The control part 21 drives the gear shaft D from the low end 30L of the first sliding track groove 30 to the high end 30H of the first sliding track groove 30, so that the gear shaft D leaves the second gear groove 11b and enters the connecting groove 12.

[0126] Adjust the chair body 102 to slide relative to the metal frame 10 along the length direction. The gear shaft D moves along the connecting groove 12 towards the first gear groove 11a. When the gear shaft D reaches the junction of the connecting groove 12 and the first gear groove 11a, the operating lever G passes through the transition groove 42 to the high end 41H of the first inclined groove 41, so as to drive the locking block L1 to retract into the metal frame 10 and disengage from the locking groove L2.

[0127] If it is necessary to adjust the orientation of the chair body 102 at this time, rotate the chair body 102 to change its orientation, and align the locking block L1 with the locking groove L2 on the base 101 corresponding to the orientation.

[0128] Release the handle 22 of the control lever 20 to return it to the first state. The control unit 21 drives the gear shaft D from the high end H of the first sliding track groove 30 to the low end 30L of the first sliding track groove 30 so that the gear shaft D enters the first gear groove 11a. At the same time, the control unit 21 drives the control lever G to move to the low end 41L of the first inclined groove 41 so that the locking block L1 protrudes out of the metal frame 10 and is embedded in the locking groove L2.

[0129] At this moment, chair body 102 returns to its original position. Figure 4 and Figure 7 The initial state shown is that the chair body 102 is upright relative to the base 101 and locked onto the base 101 in a certain orientation;

[0130] Step 23: Pull the handle 22 of the control handle 20 to bring it to the second state. The control unit 21 drives the gear shaft D from the low end 30L of the first sliding track groove 30 to the high end 30H of the first sliding track groove 30, so that the gear shaft D leaves the second gear groove 11b and enters the connecting groove 12.

[0131] Adjust the chair body 102 so that it slides relative to the metal frame 10 along its length. The gear shift shaft D moves along the connecting groove 12 towards the third gear shift groove 11c. Simultaneously, the control lever G moves along the horizontal groove 43 towards the second inclined groove 44. When the gear shift shaft D reaches the... Figure 9 When the connecting groove 12 and the third gear groove 11c are at the junction, the operating lever G moves to the high end 44H of the second inclined groove 44 so as to drive the locking block L1 to retract into the metal frame 10 and disengage from the locking groove L2.

[0132] If it is necessary to adjust the orientation of the chair body 102 at this time, then as follows Figure 10 The rotating chair body 102 is shown to change its orientation, and the locking block L1 is aligned with the locking groove L2 on the base 101 corresponding to that orientation;

[0133] Release the handle 22 of the control lever 20 to return it to the first state. The control unit 21 drives the gear shaft D to move from the high end 30H of the first sliding track groove 30 to the low end 30L of the first sliding track groove 30, so that the gear shaft D enters the third gear groove 11c. At the same time, the control unit 21 drives the control lever G to move to the low end 44L of the second inclined groove 44, so that the locking block L1 protrudes out of the metal frame 10 and is embedded in the locking groove L2.

[0134] At this time, as Figure 6 As shown, the chair body 102 is in a supine position relative to the base 101 and is locked onto the base 101 in a certain orientation;

[0135] If it is necessary to adjust the orientation of the chair body 102, then proceed to step S33;

[0136] If it is necessary to adjust the tilt angle of the chair body 102 to the middle position, then proceed to step S32;

[0137] If it is necessary to adjust the tilt angle of the chair 102 to an upright position, then proceed to step S31;

[0138] Step 32: Pull the handle 22 of the control handle 20 to bring it to the second state. The control unit 21 drives the gear shaft D from the low end L of the first sliding track groove 30 to the high end 30H of the first sliding track groove 30, so that the gear shaft D leaves the third gear groove 11c and enters the connecting groove 12. At the same time, the control unit 21 drives the control lever G from the low end 44L of the second inclined groove 44 to the high end 44H of the second inclined groove 44, so that the locking block L1 retracts into the metal frame 10 and disengages from the locking groove L2.

[0139] Adjust the chair body 102 to slide relative to the metal frame 10 along the length direction, and move the gear shaft D along the continuous groove 12 toward the second gear groove 11b. At the same time, the control lever G enters the horizontal groove 43 through the second inclined groove 44 to drive the locking block L1 to protrude out of the metal frame 10 and embed into the locking groove L2.

[0140] When the gear shaft D reaches the junction of the connecting groove 12 and the second gear groove 11b, the handle 22 of the control handle 20 is released to return it to the first state. The control unit 21 drives the gear shaft D from the high end 30H of the first sliding track groove 30 to the low end 30L of the first sliding track groove 30, so that the gear shaft D enters the second gear groove 11b. At the same time, the control unit 21 drives the control lever G to move to the low end 42L of the transition groove 42.

[0141] At this time, as Figure 5 and Figure 8 As shown, the chair body 102 is in an intermediate state relative to the base 101 and is locked onto the base 101 in a certain orientation;

[0142] If it is necessary to adjust the tilt angle of the chair body 102 to an upright position, then proceed to step S21;

[0143] If it is necessary to adjust the tilt angle of the chair 102 to a supine position, then proceed to step S23;

[0144] Step 31: Pull the handle 22 of the control handle 20 to bring it to the second state. The control unit 21 drives the gear shaft D from the low end 30L of the first sliding track groove 30 to the high end 30H of the first sliding track groove 30, so that the gear shaft D leaves the third gear groove 11c and enters the connecting groove 12. At the same time, the control unit 21 drives the control lever G from the low end 44L of the second inclined groove 44 to the high end 44H of the second inclined groove 44, so that the locking block L1 retracts into the metal frame 10 and disengages from the locking groove L2.

[0145] Adjust the chair body 102 to slide relative to the metal frame 10 along the length direction, and move the gear shaft D along the continuous groove 12 toward the first gear groove 11a. At the same time, the operating lever G enters the horizontal groove 43 through the second inclined groove 44 to drive the locking block L1 to protrude out of the metal frame 10 and embed into the locking groove L2.

[0146] The control lever G continues to move along the horizontal groove 43 toward the first inclined groove 41. When the gear shaft D reaches the junction of the connecting groove 12 and the first gear groove 11a, the control lever G passes through the transition groove 42 to the high end 41H of the first inclined groove 41, so as to drive the locking block L1 to retract into the metal frame 10 and disengage from the locking groove L2.

[0147] If it is necessary to adjust the orientation of the chair body 102 at this time, rotate the chair body 102 to change its orientation, and align the locking block L1 with the locking groove L2 on the base 101 corresponding to the orientation.

[0148] Release the handle 22 of the control lever 20 to return it to the first state. The control unit 21 drives the gear shaft D from the high end 30H of the first sliding track groove 30 to the low end 30L of the first sliding track groove 30, so that the gear shaft D enters the first gear groove 11a. At the same time, the control unit 21 drives the control lever G to move to the low end 41L of the first inclined groove 41, so that the locking block L1 protrudes out of the metal frame 10 and is embedded in the locking groove L2.

[0149] At this moment, chair body 102 returns to its original position. Figure 4 and Figure 7 The initial state shown is that the chair body 102 is upright relative to the base 101 and locked onto the base 101 in a certain orientation;

[0150] Step S11: Rotate the chair body 102 to change its orientation, and align the locking block L1 with the locking groove L2 on the base 101 corresponding to the orientation; release the handle 22 of the control handle 20 to return it to the first state, and the control part 21 drives the control lever G to move to the lower end 41L of the first inclined groove 41 so that the locking block L1 protrudes out of the metal frame 10 and is embedded in the locking groove L2.

[0151] At this time, the chair body 102 is locked onto the base 101 in a certain orientation;

[0152] Step S33: As Figure 9 and Figure 10 As shown, pull the handle 22 of the control handle 20 to bring it to the second state. The control part 21 drives the control lever G to move from the lower end 44L of the second inclined groove 44 to the higher end 44H of the second inclined groove 44, so as to drive the locking block L1 to retract into the metal frame 10 and disengage from the locking groove L2.

[0153] Rotate the chair body 102 to change its orientation, and align the locking block L1 with the locking groove L2 on the base 101 corresponding to the orientation; release the handle 22 of the control handle 20 to return it to the first state, and the control part 21 drives the control lever G to move to the lower end 44L of the second inclined groove 44, so that the locking block L1 protrudes out of the metal frame 10 and is embedded in the locking groove L2.

[0154] At this time, the chair body 102 is locked onto the base 101 in a certain orientation.

[0155] As can be seen, the child safety seat 100 provided in this embodiment, which combines tilt angle adjustment and rotation control, can adjust the tilt angle of the seat 102 and rotate the seat 102 to change its orientation when the seat body 102 is in an upright or reclining state by pulling the handle 22 of the control handle 20. That is, when the gear shaft D is in the first gear slot 11a or the third gear slot 11c, the control lever G is correspondingly located in the first inclined slot 41 or the second inclined slot 44.

[0156] Therefore, the child safety seat and its control method that combine tilt angle adjustment and rotation control provided by the present invention, through the linkage between the metal frame 10 and the control handle 20, especially the unique zigzag structure of the second sliding track groove 40 on the control part 21, highly integrates the two mechanisms of tilt angle adjustment mechanism and rotation control mechanism. Moreover, the component structure is simple, and there is no need for complex linkage device or automatic control device. It can realize the seat body to rotate and change orientation at different tilt angle positions, thereby making the child safety seat itself lightweight, reducing manufacturing costs and sales price, and making it easier for users to install and use.

[0157] From a user experience perspective, since the seat 102 can rotate and change its orientation at different tilt angles, the second inclined groove 44 in the second sliding track groove 40 allows the seat 102 to change its orientation when lying down, which meets the needs of parents taking care of children without affecting the children's sleep and rest. Furthermore, the addition of an inverted V-shaped transition groove 42 and a first inclined groove 41 on the front side of the horizontal groove 43 allows the seat 102 to change its orientation when standing, solving the problem of narrow interior space making it difficult to turn.

[0158] Furthermore, the ingenious assembly relationship between the two sets of components, the pitch angle adjustment mechanism and the rotation control mechanism, enables efficient linkage. The two mechanisms do not affect each other when they are in motion. This overcomes the technical problems of existing technologies that use ropes or wires to achieve linkage, which can lead to ropes or wires getting tangled or obstructing each other during pitch angle adjustment and rotation.

[0159] As can be seen from the above-described pitch angle adjustment and rotation control method of the child safety seat, in this embodiment, the arrangement direction of the first gear slot 11a, the second gear slot 11b, and the third gear slot 11c is opposite to the arrangement direction of the first inclined slot 41, the transition slot 42, the horizontal slot 43, and the second inclined slot 44. Furthermore, the component of the displacement vector of the gear shaft D in the gear slot 11 or the connecting slot 12 along the length direction is opposite to the component of the displacement vector of the control lever G in the second sliding track slot 40 along the length direction. In other words, during the pitch angle adjustment process, the movement directions of the gear shaft D and the control lever G in the length direction are opposite.

[0160] In this design of mechanical cooperation, from the perspective of the relative displacement between components, when the metal frame 10 moves backward relative to the seat 104, the gear shift shaft D moves forward relative to the metal frame 10, while the control lever G moves backward relative to the control part 21. Conversely, when the metal frame 10 moves forward relative to the seat 104, the gear shift shaft D moves backward relative to the metal frame 10, while the control lever G moves forward relative to the control part 21. In this way, the displacement of the control lever G along the length direction relative to the seat 104 is relatively small, thereby further improving the integration of the mechanism.

[0161] like Figure 4 and Figure 7 As shown, the control handle 20 has two parallel and symmetrically arranged control parts 21. The first sliding track groove 30 and the second sliding track groove 40 on the control parts 21 are also symmetrically arranged. The two control parts 21 are respectively arranged on both sides of the handle part 22, and the metal frame 10 is arranged parallel between the two control parts 21. Furthermore, the gear slot 11, the connecting groove 12 and the sliding groove 13 on the metal frame 10 all transversely penetrate the metal frame 10. The gear shaft D and the control lever G simultaneously pass through the first sliding track groove 30 and the second sliding track groove 40 on the two control parts 21, making the pitch angle adjustment and rotation control process more balanced and stable.

[0162] Furthermore, such as Figures 4 to 6 As shown, a spring T is provided between the ends of the two control parts 21 and the bottom of the seat 104. When the control handle 20 is in the first state, the spring T is in a naturally tightened state. Pulling the handle part 22 forward puts the control handle 20 in the second state, and the spring T is stretched. Releasing the handle part 22 causes the control handle 20 to return to the first state under the tension of the spring T. Of course, the same effect can also be achieved by providing an elastic element between the front end of the handle part 22 and the bottom of the seat 104, or by providing an elastic element between the middle part of the control part 21 and the bottom of the seat 104.

[0163] It should be noted that, such as Figure 1 , Figure 4 and Figure 7 As shown, this embodiment provides a child safety seat 100 with both tilt and rotation adjustment. The seat 104 and the transition between the seat 104 and the backrest 103 are both arc-shaped structures, thus conforming to the physiological curve of a child's buttocks and improving the comfort of the child in sitting and lying positions. Therefore, the metal frame 10 is an arc-shaped structure matching the shape of the seat 104, the sliding groove 104C at the bottom of the seat 104 is an arc-shaped structure matching the shape of the metal frame 10, and the control unit 21 is also an arc-shaped structure matching the shape of the metal frame 10. This adapts to the shape of the seat 104 itself. Furthermore, since the metal frame 10 passes through the rotation hole S2 of the base 101 via the bottom rotation shaft S1, this arc-shaped design gives the seat 102 a rounded feel with the bottom center of the seat 104 fixed and the seat 102 tilting smoothly when the tilt angle is adjusted, preventing the child from feeling unsafe about falling out of the seat.

[0164] like Figures 4 to 6 As shown, the metal frame 10 has an arc-shaped guide groove 14 at the front and rear. Correspondingly, the bottom of the seat 104 has two guide strips 15, which pass through the guide grooves 14 at the front and rear, respectively. This connects the metal frame 10 to the bottom of the seat 104 and guides the tilt angle adjustment of the chair body 102, making the tilt angle adjustment process smoother.

[0165] like Figure 5 and Figure 8 As shown, the lower end 30L of the first sliding track groove 30 has a laterally extending limiting part 31. When the control handle 20 is in the first state, the gear shaft D is limited in the limiting part 31, so that the gear shaft D is simultaneously limited in the gear groove 11, preventing the gear shaft D from longitudinally disengaging from the gear groove 11 after the pitch angle is adjusted to the correct position, causing back-and-forth shaking.

[0166] Furthermore, the slope of the transition groove 42 in the length direction of the second sliding track groove 40 is greater than that of the first inclined groove 41 or the second inclined groove 44, that is, from Figure 9 From the top, the transition groove 42 is steeper in the longitudinal direction than the first inclined groove 41 or the second inclined groove 44. This structural design allows the gear shaft D to leave the first gear groove 11a and enter the continuous groove 12, and move towards the second gear groove 11b or the third gear groove 11c. At the same time, the control lever G can pass through the transition groove 42 and enter the horizontal groove 43 as quickly as possible. This prevents the locking block L1 from disengaging from the locking groove L2 when only the tilt angle needs to be adjusted and the orientation does not need to be changed, thus preventing unnecessary rotation of the chair body 102.

[0167] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0168] The foregoing has described the child safety seat with both tilt and rotation adjustment and its control method provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the invention and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A child safety seat with both tilt and rotation adjustment, comprising a base and a seat body, the base being for mounting on a vehicle seat; the seat body comprising a backrest and a seat seat, the seat seat being for mounting on the base; characterized in that: The bottom of the chair seat is provided with a metal frame extending along the length of the chair body. A rotating shaft is provided on the metal frame, and the rotating shaft is rotatably connected to the center of the base so that the chair body can rotate relative to the base. The chair body can slide relative to the metal frame along the length direction to adjust the tilt angle of the chair body. The metal frame is provided with three gear slots, which are connected by a connecting groove; a gear shaft passes through each gear slot, and the gear shaft enters any of the gear slots to keep the chair body at the corresponding tilt angle; the gear shaft switches between the three gear slots through the connecting groove. The bottom of the chair seat is also provided with a control handle, which includes a control part arranged parallel to the metal frame and a handle part for operating the control handle; The control unit is provided with a first sliding track groove, and the gear shaft can move within the first sliding track groove; the control handle can be in a first state where the gear shaft is located within the gear groove and a second state where the gear shaft is located within the connecting groove; the control handle switches between the first state and the second state, and the gear shaft moves within the first sliding track groove to control the gear shaft to move between the gear groove and the connecting groove. The base is provided with at least two locking slots, and each locking slot is distributed on the same circumference with the center of the base as the center; The metal frame is provided with a locking block that can protrude and retract, and the locking block has a control lever; the control part is provided with a second sliding track groove, and the control lever passes through the second sliding track groove; the control handle controls the control lever to move within the second sliding track groove, so as to control the locking block to protrude or retract from the metal frame; The second sliding track groove includes, in sequence, a first inclined groove, a transition groove, a horizontal groove, and a second inclined groove connected end to end; the high end of the first inclined groove and the high end of the transition groove are connected to form an inverted V shape, the first inclined groove and the second inclined groove are arranged in parallel, and the horizontal groove connects the low end of the transition groove and the low end of the second inclined groove. When the control lever is located at the lower end of the first inclined groove, or the lower end of the transition groove, the lower end of the second inclined groove, or the horizontal groove, the locking block protrudes from the metal frame and is embedded in the locking groove, locking the chair body onto the base in a certain orientation. When the control lever is located at the high end of the first inclined groove, or the high end of the transition groove, or the high end of the second inclined groove, the locking block retracts into the metal frame and disengages from the locking groove, and the chair body can rotate relative to the base. When the gear shift shaft is displaced along the length direction in the continuous groove, the control lever is simultaneously displaced along the length direction in the second sliding track groove. The three gear slots include a first gear slot, a second gear slot, and a third gear slot arranged in sequence; The arrangement direction of the first gear slot, the second gear slot, and the third gear slot is opposite to the arrangement direction of the first inclined slot, the transition slot, the horizontal slot, and the second inclined slot. When the gear shaft is located in the first gear slot, the control lever is located at the lower end of the first inclined slot. When the gear shaft is located in the second gear slot, the control lever is located at the lower end of the transition slot; When the gear shaft is located in the third gear slot, the control lever is located at the lower end of the second inclined slot; The gear shift shaft enters the connecting groove from the first gear shift groove, the lower end of the first inclined groove of the control lever moves to the higher end of the first inclined groove, the locking block retracts into the metal frame and disengages from the locking groove, and the chair body can rotate relative to the base. The gear shift shaft enters the connecting groove from the third gear shift groove, the lower end of the second inclined groove of the control lever moves to the higher end of the second inclined groove, the locking block retracts into the metal frame and disengages from the locking groove, and the chair body can rotate relative to the base. The slope of the transition groove in the length direction of the second sliding track groove is greater than that of the first or the second inclined groove.

2. The child safety seat with both tilt and rotation adjustment as described in claim 1, characterized in that: The first sliding track groove is inclined, and its inclination direction is the same as that of the first inclined groove and the second inclined groove. The lower end of the first sliding track groove has a laterally extending limiting part; When the control handle is in the first state, the gear shaft is restricted within the restricting part so as to be simultaneously restricted within the gear slot; When the control handle is in the second state, the gear shaft moves to the high end of the first sliding track groove to enter the connecting groove and can move within the connecting groove.

3. The child safety seat with both tilt and rotation control as described in claim 1, characterized in that: The three gear slots include a first gear slot, a second gear slot, and a third gear slot; When the gear shift shaft is located in the first gear shift groove, the chair body is in an upright state relative to the base. When the gear shift shaft is located in the second gear shift groove, the chair body is in an intermediate state relative to the base. When the gear shift shaft is located in the third gear shift groove, the chair body is in a supine state relative to the base.

4. The child safety seat with both tilt adjustment and rotation control as described in claim 1, characterized in that: There are four locking slots, which are distributed at 90-degree intervals within the circumference.

5. The child safety seat with both tilt and rotation control as described in claim 1, characterized in that: The control handle has two parallel and symmetrically arranged control parts; the handle part is located at the front end of the bottom of the seat, and the two control parts are respectively located on both sides of the handle part; the metal frame is arranged parallel between the two control parts. A spring is provided between the ends of the two control parts and the bottom of the seat; when the control handle is in the first state, the spring is in the naturally tightened state; when the handle is pulled forward, the control handle is in the second state, and the spring is stretched. When the handle is released, the control lever returns to its first state under the tension of the spring.

6. The child safety seat with both tilt adjustment and rotation control as described in claim 1, characterized in that: The metal frame is an arc-shaped structure that matches the shape of the chair seat; an arc-shaped guide groove is provided on the metal frame; a guide strip is provided at the bottom of the chair seat, and the guide strip passes through the guide groove to guide the adjustment of the tilt angle of the chair body.

7. The child safety seat with both tilt and rotation control as described in claim 1, characterized in that: The metal frame is provided with a longitudinal groove, and the control lever passes through both the groove and the second sliding track groove. The control handle controls the control lever to move within the second sliding track groove, thereby causing the control lever to move longitudinally within the groove to control the locking block to protrude or retract into the metal frame.

8. A method for adjusting the pitch angle and controlling the rotation of a child safety seat, characterized in that: Its controlled object is a child safety seat that combines tilt and rotation control, including a base and a seat body, the seat body including a backrest and a seat, the seat being mounted on the base; The bottom of the chair seat is provided with a metal frame extending along the length of the chair body. A rotating shaft is provided on the metal frame, and the rotating shaft is rotatably connected to the center of the base so that the chair body can rotate relative to the base. The metal frame is provided with three gear slots in sequence, including a first gear slot, a second gear slot and a third gear slot; the three gear slots are connected by a connecting slot; a gear shaft passes through the gear slot; The bottom of the chair seat is also provided with a control handle, which includes a control part arranged parallel to the metal frame and a handle part for operating the control handle; The control unit is provided with an inclined first sliding track groove, and the end of the gear shaft passes through the first sliding track groove. The base is provided with at least two locking slots, and each locking slot is distributed on the same circumference with the center of the base as the center; The metal frame is provided with a locking block that can protrude and retract, and the locking block has a lever; the control part is provided with a second sliding track groove, and the lever passes through the second sliding track groove; The second sliding track groove includes, in sequence, a first inclined groove, a transition groove, a horizontal groove, and a second inclined groove connected end to end; the high end of the first inclined groove and the high end of the transition groove are connected to form an inverted V shape, and the horizontal groove connects the low end of the transition groove and the low end of the second inclined groove. The first sliding track groove, the first inclined groove, and the second inclined groove have the same inclination direction; It includes the following specific steps: In the initial state, the control handle is in the first state; when the gear shaft is located in the first gear slot and at the lower end of the first sliding track slot, the chair body is in an upright state relative to the base; the control lever is located at the lower end of the first inclined slot, and the locking block protrudes from the metal frame and is embedded in any of the locking slots, locking the chair body to the base in a certain orientation; Step S01: Pull the handle of the control lever to bring it to the second state. The control unit drives the gear shaft to move from the low end of the first sliding track groove to the high end of the first sliding track groove, so that the gear shaft leaves the first gear groove and enters the continuous groove. At the same time, the control unit drives the control lever to move from the low end of the first inclined groove to the high end of the first inclined groove, so that the locking block retracts into the metal frame and disengages from the locking groove. If it is necessary to adjust the orientation of the chair, proceed to step S11; If it is necessary to adjust the tilt angle of the chair to the middle position, then proceed to step S12; If it is necessary to adjust the tilt angle of the chair to a supine position, then proceed to step S13; Step S12: Adjust the chair body to slide relative to the metal frame along the length direction, the gear shaft moves along the continuous groove towards the second gear groove, and at the same time, the control lever enters the horizontal groove through the transition groove to drive the locking block to protrude out of the metal frame and embed into the locking groove; When the gear shaft reaches the junction of the connecting groove and the second gear groove, the handle of the control lever is released to return it to the first state. The control unit drives the gear shaft from the high end of the first sliding track groove to the low end of the first sliding track groove so that the gear shaft enters the second gear groove. At the same time, the control unit drives the control lever to move to the low end of the transition groove. At this time, the chair body is in an intermediate state relative to the base and is locked to the base in a certain orientation; Step S13: Adjust the chair body to slide relative to the metal frame along the length direction, the gear shaft moves along the continuous groove towards the third gear groove, and at the same time, the control lever enters the horizontal groove through the transition groove to drive the locking block to protrude out of the metal frame and embed into the locking groove; The control lever continues to move along the horizontal groove toward the second inclined groove. When the gear shaft reaches the junction of the connecting groove and the third gear groove, the control lever moves to the high end of the second inclined groove to drive the locking block to retract into the metal frame and disengage from the locking groove. Release the handle of the control lever to return it to the first state. The control unit drives the gear shaft to move from the high end of the first sliding track groove to the low end of the first sliding track groove, so that the gear shaft enters the third gear groove. At the same time, the control unit drives the control lever to move to the low end of the second inclined groove, so that the locking block protrudes from the metal frame and is embedded in the locking groove. At this time, the chair body is in a supine position relative to the base and is locked to the base in a certain orientation; If it is necessary to adjust the orientation of the chair, then proceed to step S33; Step S11: Rotate the chair body to change its orientation and align the locking block with the locking groove on the base corresponding to the orientation; release the handle of the control handle to return it to the first state, and the control part drives the control lever to move to the lower end of the first inclined groove so that the locking block protrudes from the metal frame and is embedded in the locking groove; At this time, the chair body is in an upright position relative to the base and is locked to the base in a certain orientation; Step S33: Pull the handle of the control handle to bring it to the second state. The control part drives the control lever to move from the lower end of the second inclined groove to the higher end of the second inclined groove, so as to drive the locking block to retract into the metal frame and disengage from the locking groove. Rotate the chair body to change its orientation and align the locking block with the locking groove on the base corresponding to that orientation; release the handle of the control handle to return it to the first state, and the control part drives the control lever to move to the lower end of the second inclined groove, so that the locking block protrudes from the metal frame and is embedded in the locking groove; At this time, the chair body is in a supine position relative to the base and is locked to the base in a certain orientation.

9. The method for adjusting the pitch angle and controlling the rotation of a child safety seat according to claim 8, characterized in that: A spring is provided between the end of the control unit and the bottom of the seat; when the control handle is in the first state, the spring is in a naturally tightened state; when the handle of the control handle is pulled to the second state, the spring is stretched. Release the handle portion of the control handle, and the control handle returns to its first state under the tension of the spring.

10. The method for adjusting the pitch angle and controlling the rotation of a child safety seat according to claim 8, characterized in that: The first gear slot, the second gear slot, and the third gear slot are arranged in sequence, and the arrangement direction of the first inclined slot, the transition slot, the horizontal slot, and the second inclined slot is opposite to the arrangement direction of the first gear slot, the second gear slot, and the third gear slot. The component of the displacement vector of the gear shift shaft in the gear shift groove or the continuous groove along the length direction is opposite to the component of the displacement vector of the control lever in the second sliding track groove along the length direction.

Images