Child safety seats

Abstract

The present invention relates to a child safety seat, comprising: a base (1); a seat body (2), arranged above the base (1); a rotating component (3), arranged between the seat body (2) and the base (1); and a locking and unlocking component, comprising an operating handle (4), used to at least realize the switching of the locking and unlocking component from a locked state to an unlocked state. In the locked state, the rotating component (3), the base (1) and the seat body (2) are relatively fixed. When the seat body (2) is switched to an unlocked state by operating the handle (4), the front and rear tilt angles of the seat body (2) relative to the base (1) and the rotation angle around a preset axis can be adjusted. This child safety seat can realize two functional adjustments of the body rotation angle and the body tilt angle through a single operation, making the use function adjustment of the child safety seat more convenient and simplifying the structural design of the child safety seat.

Description

Technical Field

[0001] The present invention relates to the technical field of child safety products, and in particular to a child safety seat. Background Art

[0002] A child safety seat is a safety device that can be installed on a car seat for children to improve their safety. In the event of a collision or speed change, a child safety seat can effectively reduce the impact on the child.

[0003] For children of different ages, it is best to choose safety seats with different installation directions, such as the seat facing forward or backward. In order to improve the versatility of safety seats, safety seats with seats that can rotate relative to the base have appeared on the market. Moreover, in some safety seats, the front and rear inclination angles of the seats can be adjusted to improve riding comfort.

[0004] However, most of the safety seats in the prior art only have a single function of seat rotation or front and rear tilt adjustment. If both functions are integrated at the same time, the implementation structures of the two functions are relatively independent and complex, and the two postures need to be adjusted separately, which makes the posture adjustment operation more cumbersome and inconvenient for the operator. Summary of the invention

[0005] An embodiment of the present invention provides a child safety seat, which can more conveniently adjust the seat posture.

[0006] An embodiment of the present invention provides a child safety seat, comprising:

[0007] Base;

[0008] The seat body is arranged above the base;

[0009] A rotating member disposed between the seat body and the base; and

[0010] The locking and unlocking components include an operating handle, which is used to at least realize the switching of 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 front and rear inclination angles of the seat body relative to the base and the rotation angle around the preset axis can be adjusted.

[0011] In some embodiments, the rotating component is rotatably arranged relative to the base around a preset axis to adjust the rotation angle of the seat body, and the front and rear inclination angle of the seat body relative to the rotating component is adjustable.

[0012] In some embodiments, the rotating component includes:

[0013] A first part is rotatably connected to the base relative to a predetermined axis; and

[0014] The second part is connected to the upper part of the first part and is arranged in the seat body. A guide component is arranged between the second part and the seat body to provide guidance for adjusting the front and rear inclination angle of the seat body relative to the rotating component.

[0015] In some embodiments, the first portion and the second portion are integrally formed.

[0016] In some embodiments, the base includes a lower cover and an upper cover that are interlocked.

[0017] The child safety seat also includes a limiting member, which is arranged between the upper cover and the lower cover and fixed to the lower cover and pressed on the outer edge of the first part to limit the freedom of the rotating component to separate upward from the lower cover.

[0018] In some embodiments, the first part is a disc-shaped structure, the second part is an arc-shaped structure and is adapted to the shape of the bottom area of ​​the seat body, the first end of the second part extends forward to the middle area of ​​the seat body seat plate, and the second end of the second part extends upward to the middle area of ​​the seat body back plate.

[0019] In some embodiments, the base includes a lower cover and an upper cover that are interlocked, and the child safety seat also includes a limiter, which is an annular plate structure, and the radial outer end of the limiter is fixed to the lower cover, and the radial inner end is pressed on the outer edge of the first part that protrudes circumferentially from the second part.

[0020] In some embodiments, a clearance fit is adopted between the bottom surface of the rotating component and the base, and a rolling body is provided between the bottom surface of the rotating component and the matching surface of the base.

[0021] In some embodiments, the base includes a lower cover and an upper cover that are interlocked, a positioning shaft is provided in the lower cover and is integrally formed with the lower cover, and a center line of the positioning shaft is consistent with a preset axis;

[0022] A through hole is arranged on the rotating component, and the positioning shaft is inserted into the through hole from the lower end of the through hole and rotatably matched with the through hole.

[0023] In some embodiments, the through hole is a stepped hole, including a first hole segment and a second hole segment. The first hole segment is located at the bottom and cooperates with the positioning shaft. The diameter of the first hole segment is larger than that of the second hole segment, and a step is formed at the connection. The positioning shaft is limited by the step to limit the freedom of the rotating component to move downward.

[0024] In some embodiments, the operating handle is disposed in the seat body and can be pulled outward from the front end of the seat body, and a plurality of slots are provided at intervals along the front-to-back direction on the top of the operating handle, respectively corresponding to a plurality of inclination adjustment gears of the seat body;

[0025] The lock and unlock components also include:

[0026] A locking rod, movably disposed on the rotating member along a preset axis and extending in the left-right direction of the seat body; and

[0027] A limiting groove is provided on the top surface of the positioning shaft, the limiting groove comprises at least four radial groove sections, the opposite groove sections are collinear and the inner ends are connected;

[0028] Among them, when the operating handle is pulled outward, the locking rod is forced to move upward out of the positioning groove to leave the limiting groove, so that the locking and unlocking components are in an unlocked state; when the locking rod is embedded in one of the positioning grooves, the locking rod is embedded in one of the opposite groove sections from above the limiting groove, so that the locking and unlocking components are in a locked state.

[0029] In some embodiments, a first guide groove is provided in the rotating component, and the first guide groove extends along the center line of the positioning shaft, and is used to provide guidance for the movement of the locking rod relative to the rotating component along the preset axis;

[0030] In a locked state, the locking rod is located at the bottom end of the first guide groove; in an unlocked state, the locking rod is located at the top end of the first guide groove.

[0031] In some embodiments, a first resetting element is further included, which is connected between the locking rod and the positioning shaft and is used to reset the locking rod that is out of the limiting groove.

[0032] In some embodiments, a second guide groove is provided in the seat body, and the second guide groove includes:

[0033] The first groove section is in an arc shape, and the center of the circle coincides with the center of the circle for adjusting the inclination angle of the seat body; and

[0034] A plurality of second slot sections extend along the center line of the positioning shaft, and each second slot section is communicated with the first slot section for guiding the locking rod to enter different positioning slots.

[0035] In some embodiments, the locking slot has a front side wall and a rear side wall, and the inclination angle of the rear side wall relative to the horizontal plane is smaller than that of the front side wall, so that when the operating handle is pulled outward, the locking rod disengages from the locking slot along the rear side wall. In the unlocked state, the locking rod is located at the top of the boss formed between adjacent locking slots.

[0036] In some embodiments, the guide member comprises:

[0037] A first guide member and a second guide member are provided on the seat body; and

[0038] The third guide groove and the fourth guide groove are arranged on the second part and are arranged at intervals along the front-rear direction of the seat body, and are used to limit the maximum adjustment range of the front-rear tilt angle of the seat body;

[0039] The first guide member cooperates with the third guide groove, and the second guide member cooperates with the fourth guide groove to jointly provide guidance for adjusting the front and rear tilt angle of the seat body.

[0040] In some embodiments, the operating handle is disposed in the seat body and can be pulled outward from the front end of the seat body to unlock the locking and unlocking component;

[0041] The operating handle is provided with a fifth guide groove, which cooperates with the first guide member to provide guidance for the movement of the operating handle. When the operating handle moves to the end where the first guide member is located in the fifth guide groove close to the positioning groove, the locking rod disengages from the current positioning groove and is located at the top of the boss formed between adjacent positioning grooves.

[0042] In some embodiments, the operating handle is disposed in the seat body and can be pulled outward from the front end of the seat body to unlock the locking and unlocking component;

[0043] The child safety seat also includes a second resetting element connected between the first guide member and the operating handle and used for resetting the operating handle.

[0044] In some embodiments, the preset axis is tilted forward.

[0045] The present invention provides a child safety seat, wherein an external force is applied to an operating handle to switch a locking and unlocking component from a locked state to an unlocked state, and at this time, the front and rear inclination angle of the seat body relative to the base and the rotation angle around a preset axis are both adjustable. Thus, two posture adjustment functions can be achieved through a single operation, making the posture adjustment of the child safety seat more convenient and simplifying the structure of the child safety seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0047] Figure 1 are three-dimensional diagrams of some embodiments of the child safety seat of the present invention;

[0048] Figure 2 for Figure 1 A perspective view of the child safety seat with a hidden rotating component;

[0049] Figure 3 A side view of some embodiments of the child safety seat of the present invention at a first tilt angle;

[0050] Figure 4 A side view of a child safety seat according to some embodiments of the present invention with a rotating component hidden when the child safety seat is at a first tilt angle;

[0051] Figure 5 A side view of an operating handle pulled outward when some embodiments of the child safety seat of the present invention are at a first tilt angle;

[0052] Figure 6 A side view of some embodiments of the child safety seat of the present invention when the operating handle is pulled outward and the rotating component is hidden when the child safety seat is at a first tilt angle;

[0053] Figure 7 A side view of some embodiments of the child safety seat of the present invention when the operating handle is further pulled outward to adjust to a second inclination angle;

[0054] Figure 8 A side view of a child safety seat according to some embodiments of the present invention with a rotating component hidden when the child safety seat is at a second tilt angle;

[0055] Fig. 9 is a side view of some embodiments of the child safety seat of the present invention at a third inclination angle;

[0056] Fig.10 A side view of a child safety seat according to some embodiments of the present invention with a rotating component hidden when the child safety seat is at a third inclination angle;

[0057] Fig.11 are three-dimensional diagrams of some embodiments of the rotating components in the child safety seat of the present invention;

[0058] Fig.12 The three-dimensional diagrams of some embodiments of the operating handles in the child safety seat of the present invention;

[0059] Fig.13 are three-dimensional diagrams of some embodiments of the base of the child safety seat of the present invention;

[0060] Fig.14 It is a schematic diagram of a state in which the seat body of the child safety seat of the present invention is rotated to a forward position;

[0061] Fig.15 It is a schematic diagram of a state in which the seat body of the child safety seat of the present invention is rotated to face left;

[0062] Fig.16 It is a schematic diagram of a state in which the seat body of the child safety seat of the present invention is rotated to face backward;

[0063] Fig.17 It is a schematic diagram of a state in which the seat body of the child safety seat of the present invention is rotated to the right. DETAILED DESCRIPTION

[0064] The present invention is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Each aspect so defined can be combined with any other aspect or aspects, unless explicitly stated not to be combined. In particular, any feature that is considered to be preferred or advantageous can be combined with one or more other features that are considered to be preferred or advantageous.

[0065] The terms "first", "second" and the like appearing in the present invention are only for the convenience of description to distinguish different components with the same name, and do not indicate a priority or primary and secondary relationship.

[0066] In the description of the present invention, it is necessary to understand that the terms "inside", "outside", "top", "bottom", "front", "rear", "left" and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention. Among them, the directions "front", "rear", "left" and "right" are all based on the direction of the vehicle when the child safety seat is installed in the vehicle. Moreover, in order to clearly show the internal structure of the seat in the following figures, some of the figures use half-section views, and the cutting plane is located in the middle of the seat along the width direction, and the section is not filled with blank areas.

[0067] Figures 1 to 17 Schematic diagram of the structure of the child safety seat of the present invention, hereinafter referred to as "seat". Figure 1 and Figure 2 As shown, the child safety seat comprises: a base 1, a seat body 2, a rotating component 3 and a locking and unlocking component. The seat body 2 is arranged above the base 1, and the rotating component 3 is arranged between the seat body 2 and the base 1; the locking and unlocking component comprises an operating handle 4, which is used to at least switch the locking and unlocking component from a locked state to an unlocked state. In the locked state, the rotating component 3, the base 1 and the seat body 2 are relatively fixed; when the unlocking state is switched to the unlocking state by operating the handle 4, the front and rear inclination angle of the seat body 2 relative to the base 1 and the rotation angle around the preset axis can be adjusted.

[0068] The preset axis can be perpendicular to the plane where the base 1 is located, or can be inclined relative to the plane where the base 1 is located. Preferably, the preset axis is inclined forward to prevent the seat from tilting backward due to the weight concentrated on the backrest, so that the child is more evenly stressed when sitting.

[0069] The child safety seat of this embodiment of the present invention can switch the locking and unlocking components from the locked state to the unlocked state by applying an external force to the operating handle, and at this time, the front and rear tilt angles of the seat body relative to the base and the rotation angle around the preset axis can be adjusted. Thus, two posture adjustment functions can be achieved through a single operation, making the posture adjustment of the child safety seat more flexible and convenient, and simplifying the structure of the child safety seat.

[0070] like Figure 1 and Figure 2 As shown, the rotating component 3 is rotatably arranged relative to the base 1 around a preset axis to adjust the rotation angle of the seat body 2, and the front and rear inclination angle of the seat body 2 relative to the rotating component 3 is adjustable.

[0071] By providing a rotating component 3 between the base 1 and the seat body 2, the front and rear inclination angle and the rotation angle of the seat body can be adjusted simultaneously by adding only one part, which can reduce the complexity of the structure, reduce the installation and matching links, and thus improve the reliability of the seat.

[0072] like Figure 5 As shown, the rotating component 3 includes: a first part 31 and a second part 32, the first part 31 is rotatably connected to the base 1 relative to a preset axis, the second part 32 is connected above the first part 31, and is arranged in the seat body 2, and a guide component is provided between the second part 32 and the seat body 2, which is used to provide guidance for adjusting the front and rear inclination angle of the seat body 2 relative to the rotating component 3.

[0073] In this embodiment, the first part 31 of the rotating component 3 is rotatably connected to the base 1, and the second part 32 is connected to the seat body 2 through a guide component. Two posture adjustment functions can be simultaneously achieved through a single rotating component 3, which can simplify the structure.

[0074] Preferably, the first portion 31 and the second portion 32 are integrally formed, which can increase the overall structural strength of the rotating component 3 and also increase the service life of the seat when the seat posture is frequently adjusted, and is easy to manufacture and assemble.

[0075] like Figure 2 As shown, the base 1 includes a lower cover 11 and an upper cover 12 that are interlocked, and the child safety seat also includes a limiter 15. The limiter 15 is arranged between the upper cover 12 and the lower cover 11 and is fixed to the lower cover 11, and is pressed on the outer edge of the first part 31, and is used to limit the freedom of the rotating part 3 to escape from the lower cover 11 upward. For example, the limiter 15 can be fixed to the lower cover 11 by a fastener 16, or can also be bonded. There is a gap or groove between the first part 31 and the second part 32. By pressing the outer edge of the first part 31 to limit the freedom of the entire rotating part 3 to escape upward, the structure of the chassis 1 can be fully utilized to fix the limiter 15, which can make the structure of the seat more compact.

[0076] In some embodiments, Figure 5 As shown, the first part 31 is a disc-shaped structure, and the second part 32 is an arc-shaped structure and is adapted to the shape of the bottom area of ​​the seat body 2, so that the outer contour of the rotating part 3 and the seat body 2 can be smoothly transitioned. The first end of the second part 32 extends forward to the middle area of ​​the seat plate of the seat body 2, and the second end of the second part 32 extends upward to the middle area of ​​the back plate of the seat body 2. By increasing the extension length of the second part 32, the number or interval length of the guide parts can be increased as much as possible, so as to provide a more stable guiding effect for the inclination adjustment of the seat body 2 relative to the rotating part 3.

[0077] On this basis, for the structure in which the preset axis is tilted forward, the axis of the first part 31 of the disc-shaped structure is consistent with the preset axis, and the plane where the first part 31 is located is also tilted forward because it is perpendicular to the preset axis. As a result, the groove formed between the top surface of the first part 31 and the bottom surface of the second part 32 gradually decreases in height from the front end to the rear end, and a triangular groove is formed between the rear part of the first part 31 and the second part 32. The front part of the first part 31 and the second part 32 are connected by the shape of the outer wall parallel to the preset axis.

[0078] like Fig.11 As shown, the rotating component 3 is provided with a weight-reducing groove 35 to effectively reduce the weight of the rotating component 3, thereby reducing the total weight of the seat. For example, a plurality of groups of weight-reducing grooves 35 are provided along the length extension direction of the rotating component 3, and each group of weight-reducing grooves 35 includes a plurality of weight-reducing grooves 35 arranged side by side along the width direction.

[0079] like Figure 2 As shown, the base 1 includes a lower cover 11 and an upper cover 12 that are interlocked, and the child safety seat also includes a limiter 15, which is an annular plate structure, and the radial outer end of the limiter 15 is fixed to the lower cover 11, and the radial inner end is pressed on the outer edge of the first part 31 that protrudes from the second part 32 in the circumferential direction. This structure can limit the first part 31 in the entire circumferential direction, and can increase the restraining and fixing effect on the rotating component 3.

[0080] like Figure 1 As shown, a clearance fit is adopted between the bottom surface of the rotating component 3 and the base 1, with a preset clearance D, and a rolling body 14 is provided between the bottom surface of the rotating component 3 and the mating surface of the base 1. By adopting the rolling body 14 to provide support for the rotating component 3, the rotation of the rotating component 3 relative to the base 1 can be made more flexible, and the angle adjustment of the seat body 2 can be made more convenient. In addition, by setting a clearance fit, the machining accuracy requirements for the bottom surface of the rotating component 3 and the mating surface of the base 1 and the rotating component 3 can be reduced.

[0081] Specifically, Fig.13As shown, the mating surfaces of the lower cover 12 and the first part 31 are provided with a plurality of grooves, the rolling body 14 can adopt a wheel-shaped structure, and the two ends of the rolling body 14 along its own axis are respectively provided with support shafts 17, and the rolling body 14 is fixed in the groove through the support shafts 17, and each rolling body 14 can be evenly distributed along the circumferential direction and arranged along their respective tangential positions. Alternatively, the rolling body 14 can also adopt a spherical structure.

[0082] like Figure 5 As shown, the base 1 includes a lower cover 11 and an upper cover 12 that are interlocked, a positioning shaft 13 is provided in the lower cover 11 and is integrally formed with the lower cover 11, and the center line of the positioning shaft 13 is consistent with the preset axis; a through hole 33 is provided at the center position of the first part 31 of the rotating component 3, and the positioning shaft 13 is inserted into the through hole 33 from the lower end of the through hole 33 and rotatably cooperates with the through hole 33. By integrally forming the positioning shaft 13 with the lower cover 11, the strength of the base 1 can be increased, the structural stability can be improved, the stability of the seat during rotation posture adjustment can be reduced, and shaking is not easy to occur, and the number of parts can be reduced, and the assembly efficiency can be improved.

[0083] like Figure 5 As shown, the through hole 33 is a stepped hole, including a first hole section 331 and a second hole section 332. The first hole section 331 is located at the bottom and cooperates with the positioning shaft 13. The diameter of the first hole section 331 is larger than that of the second hole section 332, and a step is formed at the connection. The positioning shaft 13 is limited by the step to limit the freedom of the rotating component 3 to move downward. Therefore, the limiter 15 and the stepped hole jointly constrain the freedom of the rotating component 3 in the height direction.

[0084] like Figure 5 and Fig.12 As shown, the operating handle 4 is arranged in the seat body 2 and can be pulled outward from the front end of the seat body 2. The top of the operating handle 4 is provided with a plurality of locking grooves 431 at intervals along the front-to-back direction, which respectively correspond to a plurality of inclination adjustment gears of the seat body 2. For example, three inclination adjustment gears can be set.

[0085] On this basis, if Figure 2 As shown, the locking and unlocking components also include: a locking rod 5, such as a cylindrical pin, which is movably arranged on the rotating component 3 along the preset axis, extending along the left and right direction of the seat body 2, and both ends are inserted into the first guide groove 34; and a limiting groove 131, which is arranged on the top surface of the positioning shaft 13, and the top surface of the positioning shaft 13 can be higher than the step surface between the first hole section 331 and the second hole section 332, so as to facilitate the locking rod 5 to enter or escape from the limiting groove 131. Fig.13 As shown, the limiting groove 131 includes at least four radial groove segments, and the opposite groove segments are collinear and the inner ends are connected.

[0086] When the operating handle 4 is pulled outward, the locking rod 5 is forced to move upward out of the positioning groove 431 to leave the limiting groove 131, so that the locking and unlocking components are in an unlocked state, and the front and rear tilt angles of the seat body 2 relative to the base 1 and the rotation angle around the preset axis are adjustable; when the locking rod 5 is embedded in one of the positioning grooves 431, the locking rod 5 is embedded in one of the relative groove sections from above the limiting groove 131, so that the locking and unlocking components are in a locked state, and the seat body 2, the rotating component 3 and the base 1 are fixed as a whole. The number of groups of relative groove sections is consistent with the gear position of the rotation adjustment of the seat body 2. Fig.14 As shown, the seat body 2 is rotated to the forward position; Fig.15 As shown, the seat body 2 is rotated to the left position; Fig.16 As shown, the seat body 2 is rotated to a rearward position; Fig.17 As shown, the seat body 2 is rotated to the right position.

[0087] Specifically, Fig.13 As shown, the positioning shaft 13 includes a coaxially arranged intermediate shaft 132 and an outer ring 133. The intermediate shaft 132 and the outer ring 133 can be connected by reinforcing ribs, which can reduce the weight while improving the structural strength of the positioning shaft 13. The top surface of the intermediate shaft 132 is higher than the top surface of the outer ring 133, and the limiting groove 131 is opened on the top surface of the intermediate shaft 132. In this way, the locking rod 5 can be reliably embedded in the limiting groove 131 to prevent interference with the outer ring 133, thereby improving the reliability of the locking and unlocking components.

[0088] This embodiment can switch between a locked state and an unlocked state by driving the locking rod 5 to move the operating handle 4, and has a simple structure and reliable operation. Moreover, when the locking rod 5 is out of the limiting groove 131, the seat can be flexibly adjusted in terms of its fore-and-aft inclination or rotational posture, or the seat body 2 can be adjusted in terms of its fore-and-aft inclination and rotational posture at the same time, thereby making the seat posture adjustment more convenient and easy to operate.

[0089] Furthermore, if Figure 5 As shown, the rotating component 3 is provided with first guide grooves 34 on both sides of the through hole 33, for example, they can be oblong holes, and the first guide grooves 34 extend along the center line of the positioning shaft 13, and are used to provide guidance for the movement of the locking rod 5 along the preset axis relative to the rotating component 33, and limit the upper and lower movement limit of the locking rod 5. In the unlocked state, the locking rod 5 is located at the top end of the first guide groove 34; in the locked state, the locking rod 5 is located at the bottom end of the first guide groove 34.

[0090] The first guide groove 34 can provide guidance for the movement of the locking rod 5, so that the locking rod 5 moves smoothly and accurately enters or leaves the limiting groove 131, thereby making the state switching action of the locking and unlocking mechanism reliable.

[0091] Furthermore, if Figure 5 As shown, the seat may further include a first reset element 8, such as a spring, connected between the locking rod 5 and the positioning shaft 13, for resetting the locking rod 5 that has escaped from the limiting groove 131, so that the locking and unlocking components are reset to the locked state after the seat posture adjustment is completed. Fig.13 As shown, one end of the first reset element 8 can be connected to the central intersection of each groove segment of the limiting groove 131, and the other end is connected to the middle position of the locking rod 5 along its own length direction, so that the locking rod 5 is subjected to balanced force during movement to prevent tilting, and can accurately and reliably achieve locking and unlocking.

[0092] like Figure 4 As shown, the seat body 2 is provided with a second guide groove 21, which is used to provide guidance for the positioning rod 5 to move into or out of each locking groove 431 when adjusting the front and rear tilt angle of the seat. The second guide groove 21 includes: a first groove section 211, which is in an arc shape, and the center of the circle is consistent with the center of the circle for adjusting the tilt angle of the seat body 2; and a plurality of second groove sections 212, which extend along the center line of the positioning shaft 13, and each second groove section 212 is connected to the first groove section 211. For example, the second groove section 212 can extend downward from the first groove section 211 to guide the locking rod 5 to enter different locking grooves 431. The number of the second groove sections 212 is the same as the number of gears for adjusting the tilt angle of the seat body 2.

[0093] This embodiment can make the locking rod 5 move smoothly when the seat is tilted forward and backward, and accurately enter or leave each slot 431, so that the seat tilt adjustment is more reliable. When the seat body 2 is at a certain tilt angle, the locking rod 5 is embedded in the corresponding slot 431 and is at the bottom of the corresponding second slot section 212. When the tilt angle of the seat body 2 needs to be adjusted, the locking rod 5 can be driven to move upward along the second slot section 212 to leave the current slot 431 by pulling the operating handle 4 outward. When the front and rear tilt angle of the seat body 2 is adjusted, the locking rod 5 will be driven to move along the first slot section 211 and enter the adjacent second slot section 212 through the movement of the seat body 2. Under the action of the first reset element 8, the locking rod 5 is again at the bottom of the second slot section 212 to keep the seat body 2 locked at the adjusted tilt gear. If the tilt gear needs to be further adjusted, the above method is repeated. The same operation method can be used for adjusting the tilt forward and backward.

[0094] like Fig.12 As shown, the operating handle 4 includes an operating section 41, a positioning section 42 and a locking section 43 which are connected in sequence, and the operating section 41, the positioning section 42 and the locking section 43 form an arc-shaped structure, and are adapted to the shape of the front area below the seat body 2. This structure can not only save the space occupied by the operating handle 4 on the seat body 2, but also obtain a better operating angle and save operating space.

[0095] The user can switch the locking and unlocking components from the locked state to the unlocked state by operating the outward section 41. The positioning section 42 is provided with a positioning block 421 protruding outward. For example, the positioning block 421 can be provided on the lower surface of the positioning section 42 so as to cooperate with the guide groove in the seat body 2 to provide guidance for the movement of the operating handle 4. The respective positioning grooves 431 are arranged at intervals on the top surface of the engaging section 43 along the length direction of the operating handle 4.

[0096] Still refer to Fig.12 The locking groove 431 has a front side wall 4311 and a rear side wall 4312, and the inclination angle of the rear side wall 4312 relative to the horizontal plane is smaller than that of the front side wall 4311, so that when the operating handle 4 is pulled outward, the locking rod 5 disengages from the locking groove 431 along the slope formed by the rear side wall 4312. In the unlocked state, the locking rod 5 is located at the top of the boss 432 formed between adjacent locking grooves 431.

[0097] like Figure 1 As shown, the guide component includes: a first guide member 6 and a second guide member 7, which are arranged on the seat body 2 and can be cylindrical pins, etc.; and a third guide groove 321 and a fourth guide groove 322, which are arranged on the second part 32 and are spaced apart along the front-to-back direction of the seat body 2. The first guide member 6 cooperates with the third guide groove 321, and the second guide member 7 cooperates with the fourth guide groove 322 to jointly provide guidance for the front-to-back tilt adjustment of the seat body 2, and to play a guiding role in the tilt adjustment of the seat body 2, and the maximum adjustment range of the front-to-back tilt of the seat body 2 is limited by the length of the guide groove. For example, the third guide groove 321 and the fourth guide groove 322 can be arc-shaped oblong holes, and the center of the oblong hole is consistent with the center of the tilt adjustment of the seat body 2.

[0098] Still refer to Fig.12 The operating handle 4 is arranged in the seat body 2 and can be pulled outward from the front end of the seat body 2 to unlock the locking and unlocking components. The operating handle 4 is provided with a boss portion 44, which can be arranged on the upper surface of the guide section 42 near the position of the positioning groove 431. The boss portion 44 can be provided with a fifth guide groove 441, for example, an arc-shaped oblong hole is adopted, and its center is consistent with the center of the circle of the inclination adjustment of the seat body 2. The fifth guide groove 441 cooperates with the first guide member 6 to provide guidance for the movement of the operating handle 4. When the operating handle 4 moves to the end of the first guide member 6 located at the fifth guide groove 441 near the positioning groove 431, the locking rod 5 is separated from the positioning groove 431 and is located between adjacent positioning grooves 431 to form the top of the boss 432.

[0099] like Figure 4 As shown, in the initial state, the first guide member 6 is located at an end of the third guide groove 321 away from the locking groove 431. Figure 6As shown, when the operating handle 4 is initially pulled outward, the first guide member 6 slides inward in the third guide slot 321 until the first guide member 6 moves inward in the third guide slot 321 to one end close to the locking slot 431, at which time the locking rod 5 also moves upward to the first slot section 211 to unlock. If the operating handle 4 is continuously pulled outward, the seat body 2 will be driven to change its inclination angle, and at the same time the locking rod 5 moves in the first slot section 211 to enter the next locking slot 431.

[0100] This type of inclination adjustment method can unlock the locking and unlocking components and adjust the inclination of the seat body 2 in sequence when the operating handle 4 is pulled outward. It is easy to operate, simplifies the posture adjustment process, can be operated with one hand, and can adapt to the relatively small operating space inside the vehicle.

[0101] Furthermore, the seat of the present invention may further include a second resetting element 9 connected between the first guide member 6 and the operating handle 4, for resetting the operating handle 4. Figure 2 As shown, one end of the second reset element 9 is connected to the middle position of the first guide member 6 along its length direction, and the second end is connected to the guide section 42 of the operating handle 4.

[0102] exist Figure 6 In the unlocked state shown in FIG. 1 , after adjusting the inclination angle of the seat body 2 , if the operating handle 4 is released, the operating handle 4 will return to the position under the action of the second reset element 9 . Figure 4 In the state shown, the operating handle 4 can be automatically reset.

[0103] The following will be combined Figures 3 to 10 The inclination angle of the seat is the angle between the backrest of the seat body 2 and the vertical plane. For example, the seat has three inclination adjustment gears, including a first inclination angle, a second inclination angle and a third inclination angle. The first inclination angle is smaller than the second inclination angle, and the second inclination angle is smaller than the third inclination angle.

[0104] like Figure 3 The figure is a schematic diagram of the state of the seat body 2 at the first inclination angle, the first guide member 6 is located at the upper limit position of the third guide groove 321, and the second guide member 7 is located at the left limit position of the fourth guide groove 322. At the first inclination angle, the locking rod 5 is embedded in one of the opposite groove sections and is located at the bottom end of the first guide groove 34, so that the locking and unlocking components are in a locked state, thereby fixing the seat body 2, the rotating component 3 and the base 3 together, and the seat posture cannot be adjusted at this time.

[0105] like Figure 4 As shown, it is a schematic diagram of the state of hiding the rotating component 3 when the seat body 2 is at the first inclination angle. At this time, the locking rod 5 is in the rightmost locking groove 431, and the first guide member 5 is located at the end of the fifth guide groove 441 away from the locking groove 431.

[0106] like Figure 5 As shown, when the seat posture needs to be adjusted, when the operating handle 4 is pulled outward, under the guidance of the first guide groove 34, the locking rod 5 moves upward along the rear side wall 4312 of the positioning groove 431 until it reaches the top of the boss 432 between the adjacent positioning grooves 431. At this time, the locking rod 5 is located at the top of the first guide groove 34, so that the locking and unlocking components are switched to the unlocked state, and the front and rear inclination angle adjustment and rotation adjustment of the seat body 2 can be allowed at the same time.

[0107] like Figure 6 , which is a schematic diagram of the state in which the rotating component 3 is hidden when the operating handle 4 is pulled outward. At this time, the first positioning member 6 reaches the limit position of the fifth guide groove 441 close to the locking groove 431, and the locking rod 5 moves from the bottom to the top along the second groove section 212 on the far right.

[0108] like Figure 7 As shown, if the operating handle 4 is continuously pulled outward, a force will be applied to the seat body 2, thereby driving the seat body 2 to adjust the inclination angle backward, and at the same time, the locking rod 5 moves leftward along the first slot section 211 to adjust the seat body 2 to the second inclination angle. At the second inclination angle, the first guide member 6 and the second guide member 7 are respectively located at the middle position of the third guide groove 321 and the fourth guide groove 322 along their respective length directions.

[0109] like Figure 8 As shown, when the locking rod 5 moves to the left along the first slot section 211 to enter the middle locking slot 431, the operating handle 4 is released, and the operating handle 4 is pulled back inward under the action of the second reset element 8, so that the first guide member 6 is still in the position of the fifth guide slot 441 away from the locking slot 431, and the locking rod 5 enters the bottom end of the second slot section 212 in the middle position, so that the seat body 2 is locked in the second inclination angle position.

[0110] like Fig. 9 As shown, it is a schematic diagram of the state where the seat body 2 is adjusted to the third inclination angle, the first guide member 6 is located at the lower limit position of the third guide groove 321, and the second guide member 7 is located at the right limit position of the fourth guide groove 322. This inclination angle is suitable for children to be in a semi-lying posture when riding, and is suitable for children to use when they are tired or fall asleep during riding.

[0111] like Fig.10 As shown, it is a schematic diagram of hiding the rotating component 3 when the seat body 2 is adjusted to the third inclination angle, and the locking rod 5 is at the bottom end of the second groove section 212 on the far left, so that the locking and unlocking component is in a locked state.

[0112] The above is a detailed introduction to a child safety seat provided by the present invention. Specific embodiments are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A child safety seat, characterized in that: include: The base (1) comprises a lower cover (11) and an upper cover (12) which are interlocked, wherein a positioning shaft (13) is provided in the lower cover (11) and is integrally formed with the lower cover (11), and a center line of the positioning shaft (13) is consistent with a preset axis; A seat body (2) is arranged above the base (1); a rotating component (3) disposed between the seat body (2) and the base (1); a through hole (33) being provided on the rotating component (3); the positioning shaft (13) being inserted into the through hole (33) from the lower end of the through hole (33) and rotatably matched with the through hole (33); and A locking and unlocking component, comprising an operating handle (4), which is arranged in the seat body (2) and can be pulled outward from the front end of the seat body (2) to at least realize the switching of the locking and unlocking component from a locked state to an unlocked state. In the locked state, the rotating component (3), the base (1) and the seat body (2) are relatively fixed; when the seat body (2) is switched to the unlocked state by the operating handle (4), the front and rear inclination angle of the seat body (2) relative to the base (1) and the rotation angle around a preset axis are both adjustable; The top of the operating handle (4) is provided with a plurality of latching grooves (431) at intervals along the front-to-back direction, respectively corresponding to a plurality of inclination adjustment gears of the seat body (2); the locking and unlocking component further comprises: a locking rod (5) movably disposed on the rotating component (3) along the preset axis and extending in the left-right direction of the seat body (2); and A limiting groove (131) is provided on the top surface of the positioning shaft (13), the limiting groove (131) comprising at least four radial groove segments, the opposite groove segments being collinear and having inner ends connected; When the operating handle (4) is pulled outward, the locking rod (5) is forced to move upward out of the positioning groove (431) to leave the limiting groove (131), so that the locking and unlocking component is in an unlocked state; when the locking rod (5) is embedded in one of the positioning grooves (431), the locking rod (5) is embedded in one of the opposite groove sections from above the limiting groove (131), so that the locking and unlocking component is in a locked state.

2. The child safety seat according to claim 1, characterized in that: The rotating component (3) is rotatably arranged relative to the base (1) around the preset axis to adjust the rotation angle of the seat body (2), and the front and rear inclination angle of the seat body (2) relative to the rotating component (3) is adjustable.

3. The child safety seat according to claim 1 or 2, characterized in that: The rotating component (3) comprises: A first portion (31) is rotatably connected to the base (1) relative to the preset axis; and The second part (32) is connected to the top of the first part (31) and is arranged in the seat body (2). A guide component is provided between the second part (32) and the seat body (2) for providing guidance for adjusting the front and rear inclination angle of the seat body (2) relative to the rotating component (3).

4. The child safety seat according to claim 3, characterized in that: The first part (31) and the second part (32) are integrally formed.

5. The child safety seat according to claim 3, characterized in that: The child safety seat further comprises a limiting member (15), wherein the limiting member (15) is disposed between the upper cover (12) and the lower cover (11) and is fixed to the lower cover (11), and is pressed against the outer edge of the first part (31), so as to limit the degree of freedom of the rotating member (3) to separate upward from the lower cover (11).

6. The child safety seat according to claim 3, characterized in that: The first part (31) is a disc-shaped structure, the second part (32) is an arc-shaped structure and is adapted to the shape of the bottom area of ​​the seat body (2), the first end of the second part (32) extends forward to the middle area of ​​the seat plate of the seat body (2), and the second end of the second part (32) extends upward to the middle area of ​​the back plate of the seat body (2).

7. The child safety seat according to claim 6, characterized in that: The base (1) comprises a lower cover (11) and an upper cover (12) which are interlocked, and the child safety seat further comprises a limiter (15), wherein the limiter (15) is an annular plate-shaped structure, wherein the radial outer end of the limiter (15) is fixed to the lower cover (11), and the radial inner end is pressed on the outer edge of the first part (31) which protrudes from the second part (32) in the circumferential direction.

8. The child safety seat according to claim 1, characterized in that: A clearance fit is adopted between the bottom surface of the rotating component (3) and the base (1), and a rolling body (14) is provided between the bottom surface of the rotating component (3) and the matching surface of the base (1).

9. The child safety seat according to claim 1, characterized in that: The through hole (33) is a stepped hole, comprising a first hole section (331) and a second hole section (332); the first hole section (331) is located at the bottom and cooperates with the positioning shaft (13); the diameter of the first hole section (331) is larger than that of the second hole section (332), and a step is formed at the connection; the positioning shaft (13) is limited by the step to limit the freedom of the rotating component (3) to move downward.

10. The child safety seat according to claim 1, characterized in that: A first guide groove (34) is provided in the rotating component (3), and the first guide groove (34) extends along the center line of the positioning shaft (13) and is used to provide guidance for the movement of the locking rod (5) relative to the rotating component (3) along a preset axis; In the locked state, the locking rod (5) is located at the bottom end of the first guide groove (34); in the unlocked state, the locking rod (5) is located at the top end of the first guide groove (34).

11. The child safety seat according to claim 1, characterized in that: It also includes a first resetting element (8), connected between the locking rod (5) and the positioning shaft (13), and used for resetting the locking rod (5) that has escaped from the limiting groove (131).

12. The child safety seat according to claim 1, characterized in that: A second guide groove (21) is provided in the seat body (2), and the second guide groove (21) comprises: The first groove section (211) is in an arc shape, and the center of the circle is consistent with the center of the circle for adjusting the inclination angle of the seat body (2); and A plurality of second slot sections (212) extend along the center line of the positioning shaft (13), and each of the second slot sections (212) is connected to the first slot section (211) and is used to guide the locking rod (5) into different positioning slots (431).

13. The child safety seat according to claim 1, characterized in that: The locking groove (431) comprises a front side wall (4311) and a rear side wall (4312); the rear side wall (4312) has an inclination angle relative to a horizontal plane smaller than that of the front side wall (4311), so that when the operating handle (4) is pulled outward, the locking rod (5) is disengaged from the locking groove (431) along the rear side wall (4312); in the unlocked state, the locking rod (5) is located at the top of a boss (432) formed between adjacent locking grooves (431).

14. The child safety seat according to claim 3, characterized in that: The guide component comprises: A first guide member (6) and a second guide member (7) are provided on the seat body (2); and A third guide groove (321) and a fourth guide groove (322) are provided on the second part (32) and are arranged at intervals along the front-rear direction of the seat body (2) and are used to limit the maximum adjustment range of the front-rear tilt angle of the seat body (2); The first guide member (6) cooperates with the third guide groove (321), and the second guide member (7) cooperates with the fourth guide groove (322), so as to jointly provide guidance for adjusting the front and rear tilt angle of the seat body (2).

15. The child safety seat according to claim 14, characterized in that: The operating handle (4) is arranged in the seat body (2) and can be pulled outward from the front end of the seat body (2) to unlock the locking and unlocking component. The top of the operating handle (4) is provided with a plurality of latching grooves (431) at intervals along the front-to-back direction, respectively corresponding to a plurality of inclination adjustment gears of the seat body (2). The locking and unlocking component also includes a locking rod (5) movably arranged on the rotating component (3) along the preset axis. The operating handle (4) is provided with a fifth guide groove (441) which cooperates with the first guide member (6) to provide guidance for the movement of the operating handle (4); when the operating handle (4) moves to the point where the first guide member (6) is located at one end of the fifth guide groove (441) close to the locking groove (431), the locking rod (5) is disengaged from the locking groove (431) and is located at the top of a boss (432) formed between adjacent locking grooves (431).

16. The child safety seat according to claim 15, characterized in that: The operating handle (4) is arranged in the seat body (2), and can be pulled outward from the front end of the seat body (2) to unlock the locking and unlocking component; The child safety seat further comprises a second resetting element (9), which is connected between the first guide member (6) and the operating handle (4) and is used to reset the operating handle (4).

17. The child safety seat according to claim 1, characterized in that: The preset axis is inclined forward.

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