CN210337660U

CN210337660U - Child safety seat

Info

Publication number: CN210337660U
Application number: CN201921438621.2U
Authority: CN
Inventors: 陈仲; 邢孔誉; 刘修平
Original assignee: Zhuhai Hongdian Technology Co ltd
Current assignee: Zhuhai Hongdian Technology Co ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-04-17
Anticipated expiration: 2029-08-29

Abstract

The utility model relates to a children's safety seat, include: a base (1); the seat body (2) is arranged above the base (1); a rotating member (3) provided between the seat body (2) and the base (1); and the locking and unlocking component comprises an operating handle (4) and is used for at least realizing the switching of the locking and unlocking component from a locking state to an unlocking state, the rotating component (3), the base (1) and the seat body (2) are relatively fixed in the locking state, and when the locking and unlocking component is switched to the unlocking state through the operating handle (4), the front-back inclination angle and the rotation angle around a preset axis of the seat body (2) relative to the base (1) are adjustable. This kind of children's safety seat accessible single operation realizes two kinds of function regulation of body rotation angle and body inclination, makes children's safety seat's service function adjust more convenient, and has simplified children's safety seat's structural design.

Description

Child safety seat

Technical Field

The utility model relates to a children's safety articles for use technical field especially relates to a children's safety seat.

Background

A child safety seat is a safety device that can be installed on a vehicle seat and on which a child can sit to improve the safety of the child in the vehicle. Under the condition that the automobile is collided or the speed is changed, the child safety seat can effectively reduce the impact force on the child.

Safety seats with different installation orientations, such as forward or backward facing, are preferred for children of different ages, and in order to improve the versatility of the safety seat, safety seats with a seat rotatable relative to a base are available on the market. Also, in some safety seats, the fore-aft tilt angle of the seat may be adjusted in order to improve the comfort of the ride.

However, for the safety seat in the prior art, most of the safety seats only have the functions of single seat rotation or adjustable front and back inclination angles, if two functions are integrated at the same time, the two functions are relatively independent in realization structure and complex in structure, and two postures need to be adjusted independently, so that the posture adjustment operation is complicated, and the inconvenience in use of an operator is caused.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a child safety seat can adjust the seat gesture more conveniently.

An embodiment of the utility model provides a child safety seat, include:

a base;

the seat body is arranged above the base;

the rotating component is arranged between the seat body and the base; and

the locking and unlocking component comprises an operation handle and is used for at least realizing the switching of the locking and unlocking component from a locking state to an unlocking state, and the rotating component, the base and the seat body are relatively fixed in the locking state; when the chair is switched to the unlocking state by operating the handle, the front and back inclination angle of the chair body relative to the base and the rotation angle around the preset axis can be adjusted.

In some embodiments, the rotating member is rotatably disposed about a preset axis with respect to the base to adjust a rotation angle of the seat body, and a forward and backward inclination angle of the seat body with respect to the rotating member is adjustable.

In some embodiments, the rotating component comprises:

a first portion rotatably connected to the base with respect to a predetermined axis; and

the second portion is connected above the first portion and arranged in the seat body, and a guide component is arranged between the second portion and the seat body and used for providing guide for adjusting the front and back inclination angles of the seat body relative to the rotating component.

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

In some embodiments, the base comprises a lower cover and an upper cover which are buckled with each other,

the child safety seat further comprises a limiting part, wherein the limiting part is arranged between the upper cover and the lower cover, is fixed with the lower cover and is pressed at the outer edge of the first part, and is used for limiting the degree of freedom of the rotating part which is upwards separated from the lower cover.

In some embodiments, the first portion is a disc-like structure, the second portion is an arc-like structure and is shaped to fit the shape of the seat body bottom region, a first end of the second portion extends forward to a middle region of the seat body pan, and a second end of the second portion extends upward to a middle region of the seat body back plate.

In some embodiments, the base includes a lower cover and an upper cover that are fastened to each other, and the child safety seat further includes a limiting member, the limiting member is in a ring-shaped plate-shaped structure, an outer end of the limiting member in the radial direction is fixed to the lower cover, and an inner end of the limiting member in the radial direction presses on an outer edge of the first portion that protrudes from an outer edge of the second portion in the circumferential direction.

In some embodiments, a clearance fit is adopted between the bottom surface of the rotating part and the base, and a rolling body is arranged between the bottom surface of the rotating part and the matching surface of the base.

In some embodiments, the base comprises a lower cover and an upper cover which are buckled with each other, a positioning shaft is arranged in the lower cover and is integrally formed with the lower cover, and the central line of the positioning shaft is consistent with the preset axis;

the rotating part is provided with a through hole, and the positioning shaft is inserted into the through hole from the lower end of the through hole and is rotationally matched with the through hole.

In some embodiments, the through hole is a stepped hole and comprises a first hole section and a second hole section, the first hole section is located below and matched with the positioning shaft, the diameter of the first hole section is larger than that of the second hole section, a step is formed at the joint, and the positioning shaft is limited by the step to limit the degree of freedom of downward movement of the rotating component.

In some embodiments, the operating handle is arranged in the seat body and can be pulled outwards from the front end of the seat body, and a plurality of clamping grooves are arranged at the top of the operating handle at intervals along the front-back direction and respectively correspond to a plurality of inclination angle adjusting gears of the seat body;

the locking and unlocking member further includes:

a locking lever movably provided on the rotating member along a preset axis and extending in a left-right direction of the seat body; and

the limiting groove is arranged on the top surface of the positioning shaft and comprises at least four radial groove sections, and the opposite groove sections are collinear and the inner ends of the groove sections are communicated;

when the operating handle is pulled outwards, the locking rod is forced to be pulled upwards out of the clamping groove to leave the limiting groove, so that the locking and unlocking component is in an unlocking state; when the locking rod is embedded into one of the clamping grooves, the locking rod is embedded into one of the opposite groove sections from the upper side of the limiting groove, so that the locking and unlocking component is in a locking state.

In some embodiments, a first guide groove is formed in the rotating component, and the first guide groove extends along the central line of the positioning shaft and is used for guiding the locking rod to move along a preset axis relative to the rotating component;

in the locking state, the locking rod is positioned at the bottom end of the first guide groove; in the unlocked state, the locking lever is located at the top end of the first guide groove.

In some embodiments, the locking mechanism further comprises a first resetting element connected between the locking rod and the positioning shaft for resetting the locking rod out of the limiting groove.

In some embodiments, a second guide slot is provided in the seat body, the second guide slot including:

the first groove section is arc-shaped, and the circle center of the first groove section is consistent with the circle center of the seat body for adjusting the inclination angle; and

and the second groove sections extend along the central line of the positioning shaft, and each second groove section is communicated with the first groove section and used for guiding the locking rod to enter different clamping grooves.

In some embodiments, the detent grooves have front and rear side walls, the rear side wall having a smaller inclination angle relative to the horizontal than the front side wall, such that the locking bar disengages from the detent grooves along the rear side wall when the operating handle is pulled outwardly, and in the unlocked state, the locking bar is located between adjacent detent grooves forming the top of the boss.

In some embodiments, the guide member comprises:

a first guide member and a second guide member provided on the seat body; and

the third guide groove and the fourth guide groove are arranged on the second part, are arranged at intervals along the front-back direction of the seat body and are used for limiting the maximum adjusting range of the front-back inclination angle of the seat body;

the first guide piece is matched with the third guide groove, and the second guide piece is matched with the fourth guide groove to provide guidance for adjusting the front and back inclination angles of the seat body together.

In some embodiments, the operating handle is arranged in the seat body and can be pulled outwards from the front end of the seat body to unlock the locking and unlocking component;

the operating handle is provided with a fifth guide groove which is matched with the first guide piece and used for providing guide for the movement of the operating handle, and when the operating handle moves to the position where the first guide piece is positioned at one end, close to the clamping groove, of the fifth guide groove, the locking rod is separated from the current clamping groove and positioned at the top of the boss formed between the adjacent clamping grooves.

the child safety seat further comprises a second reset element connected between the first guide and the operating handle for resetting the operating handle.

In some embodiments, the preset axis is inclined forwardly.

The utility model provides a child safety seat through applying external force to the operating handle, can make locking unblock part switch to the unblock state from the lock-out state, and the seat body is all adjustable around inclination and the rotation angle around predetermineeing the axis for the base around this moment. From this, two kinds of posture adjustment function are realized in the operation of accessible singleness, make children's safety seat's posture adjustment more convenient, can simplify children's safety seat's structure moreover.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

FIG. 1 is a perspective view of some embodiments of the child safety seat of the present invention;

FIG. 2 is a perspective view of the hidden swivel component of the child safety seat of FIG. 1;

FIG. 3 is a side view of some embodiments of the child safety seat of the present invention at a first angle of inclination;

FIG. 4 is a side view of the hidden rotating members of some embodiments of the child safety seat of the present invention at a first tilt angle;

FIG. 5 is a side view of some embodiments of the child safety seat of the present invention at a first angle of inclination pulling the operating handle outward;

FIG. 6 is a side view of some embodiments of the child safety seat of the present invention at a first angle of inclination with the operating handle pulled outward and the rotating components hidden;

FIG. 7 is a side view of some embodiments of the child safety seat of the present invention with the operating handle continuing to be pulled outward to a second tilt angle;

FIG. 8 is a side view of the hidden rotating members of some embodiments of the child safety seat of the present invention at a second tilt angle;

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

FIG. 10 is a side view of the hidden rotating members of some embodiments of the child safety seat of the present invention at a third angle of inclination;

FIG. 11 is a perspective view of some embodiments of the swivel components of the child safety seat of the present invention;

FIG. 12 is a perspective view of some embodiments of an operating handle in the child safety seat of the present invention;

FIG. 13 is a perspective view of some embodiments of a base in the child safety seat of the present invention;

fig. 14 is a schematic view illustrating a state in which the seat body of the child safety seat of the present invention is rotated to the forward position;

fig. 15 is a schematic view of the child safety seat of the present invention in a state where the seat body is rotated to the left;

FIG. 16 is a schematic view of the child safety seat of the present invention in a state where the seat body is rotated backward;

fig. 17 is a schematic view of the seat body of the child safety seat of the present invention rotating to the right.

Detailed Description

The present invention will be described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.

The terms "first", "second", and the like in the present invention are used for convenience of description only to distinguish different constituent elements having the same name, and do not indicate a sequential or primary-secondary relationship.

In the description of the present invention, it should be understood that the terms "inner", "outer", "top", "bottom", "front", "back", "left" and "right" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the scope of the present invention. The orientations "front", "rear", "left" and "right" are based on the direction of the vehicle when the child safety seat is installed in the vehicle. In the following figures, in order to clearly show the internal structure of the seat, the partial figures are half-sectional views, the sectional plane is located at the middle position of the seat in the width direction, and the sectional plane is not filled with blank areas.

Fig. 1 to 17 are schematic structural views of the child safety seat of the present invention, which will be referred to as "seat" for short. In some embodiments, as shown in fig. 1 and 2, a child safety seat includes: the seat includes a base 1, a seat body 2, a rotating member 3, and a lock-unlock member. Wherein, 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 means comprise an operating handle 4 for effecting at least the switching of the locking and unlocking means from the locked state to the unlocked state. In the locked state, the rotary member 3, the base 1, and the seat body 2 are relatively fixed; when the seat body 2 is switched to the unlocked state by operating the handle 4, both the front-rear tilt angle and the rotation angle about the preset axis of the seat body 2 with respect to the base 1 are adjustable.

The preset axis may be perpendicular to the plane of the base 1, or may be inclined with respect to the plane of the base 1. Preferably, the predetermined axis is inclined forward to prevent the seat from tipping backwards due to weight being concentrated on the backrest, so that the child is more evenly stressed during sitting.

The utility model discloses this embodiment's children's safety seat through applying external acting force to the operating handle, can make locking unblock part switch to the unblock state from the lock-out state, and the seat body is all adjustable with the rotation angle around predetermineeing the axis for the front and back inclination of base this moment. From this, two kinds of posture adjustment function are realized in the operation of accessible singleness, make children's safety seat's posture adjustment more nimble convenient, can simplify children's safety seat's structure moreover.

As shown in fig. 1 and 2, the rotating member 3 is rotatably provided about a preset axis with respect to the base 1 to adjust the rotation angle of the seat body 2, and the forward and backward inclination of the seat body 2 with respect to the rotating member 3 is adjustable.

Through set up rotary part 3 between base 1 and seat body 2, only need increase a part, just can realize the adjustment of seat body front and back inclination and rotation angle simultaneously, can reduce the structure complexity, reduce the installation cooperation link to improve the reliability of seat.

As shown in fig. 5, the rotating member 3 includes: a first portion 31 and a second portion 32, the first portion 31 is rotatably connected with the base 1 relative to a preset axis, the second portion 32 is connected above the first portion 31 and is arranged in the seat body 2, and a guiding component is arranged between the second portion 32 and the seat body 2 and is used for providing guidance for adjusting the front and back inclination angles of the seat body 2 relative to the rotating component 3.

In this embodiment, the first portion 31 of the rotating member 3 is rotatably connected to the base 1, and the second portion 32 is connected to the seat body 2 via the guide member, so that two posture adjustment functions can be simultaneously realized by the single rotating member 3, and the structure can be simplified.

Preferably, the first portion 31 and the second portion 32 are integrally formed, so that the overall structural strength of the rotating member 3 can be increased, the service life of the seat can be prolonged even when the posture of the seat is frequently adjusted, and the seat is convenient to manufacture and assemble.

As shown in fig. 2, the base 1 includes a lower cover 11 and an upper cover 12 that are engaged with each other, and the child safety seat further includes a limiting member 15, where the limiting member 15 is disposed between the upper cover 12 and the lower cover 11, fixed to the lower cover 11, and pressed against an outer edge of the first portion 31 to limit a degree of freedom of the rotating member 3 that is disengaged from the lower cover 11 upward. For example, the limiting member 15 may be fixed to the lower cover 11 by a fastener 16, or may be bonded to the lower cover. A gap or a groove is formed between the first part 31 and the second part 32, the degree of freedom of the whole rotating component 3 which is pulled out upwards is limited by pressing the outer edge of the first part 31, the limiting component 15 can be fixed by fully utilizing the structure of the chassis 1, and the structure of the seat can be more compact.

In some embodiments, as shown in fig. 5, the first portion 31 has a disc-like structure, and the second portion 32 has an arc-like structure and is adapted to the shape of the bottom region of the seat body 2, so that the rotating component 3 can smoothly transition with the contour of the seat body 2. A first end of the second portion 32 extends forward to a middle region of the seat plate of the seat body 2, and a second end of the second portion 32 extends upward to a middle region of the back plate of the seat body 2. By increasing the extension length of the second portion 32, the number of guide members or the interval length can be increased as much as possible to provide a more stable guiding action for the inclination adjustment of the seat body 2 with respect to the rotating member 3.

On the basis, for the structure with the preset axis inclined forwards, the axis of the first part 31 of the disc-shaped structure is consistent with the preset axis, the plane of the first part 31 is also inclined forwards because the plane is perpendicular to the preset axis, therefore, the height of the groove formed between the top surface of the first part 31 and the bottom surface of the second part 32 is gradually reduced from the front end to the rear end, a groove similar to a triangle is formed between the rear part of the first part 31 and the second part 32, and the front part of the first part 31 is connected with the second part 32 through the shape of an outer side wall parallel to the preset axis.

As shown in fig. 11, the rotating member 3 is provided with a weight-reducing groove 35 to effectively reduce the weight of the rotating member 3, thereby reducing the total weight of the seat. For example, the weight-reducing grooves 35 are provided in plural sets along the longitudinal extension direction of the rotary member 3, and each set of weight-reducing grooves 35 includes a plurality of weight-reducing grooves 35 arranged side by side in the width direction.

As shown in fig. 2, the base 1 includes a lower cover 11 and an upper cover 12 that are engaged with each other, the child safety seat further includes a limiting member 15, the limiting member 15 is in a ring-shaped plate structure, an outer end of the limiting member 15 in the radial direction is fixed to the lower cover 11, and an inner end of the limiting member in the radial direction is pressed on an outer edge of the first portion 31 that protrudes from an outer edge of the second portion 32 in the circumferential direction. This structure can restrict the first portion 31 in the entire circumferential direction, and can increase the effect of restraining and fixing the rotating member 3.

As shown in fig. 1, the bottom surface of the rotating member 3 is in clearance fit with the base 1, and has a predetermined clearance D, and a rolling element 14 is provided between the bottom surface of the rotating member 3 and the fitting surface of the base 1. By adopting the rolling body 14 to support the rotating component 3, the rotating component 3 can rotate relative to the base 1 more flexibly, the angle adjustment of the seat body 2 is more convenient, and the processing precision requirement of the bottom surface of the rotating component 3 and the matching surface of the base 1 and the rotating component 3 can be reduced by arranging clearance fit.

Specifically, as shown in fig. 13, a plurality of grooves are provided on the mating surface of the lower cover 12 and the first portion 31, the rolling elements 14 may adopt a wheel-shaped structure, the two ends of the rolling elements 14 along the axial direction thereof are respectively provided with a support shaft 17, the rolling elements 14 are fixed in the grooves by the support shafts 17, and the rolling elements 14 may be uniformly distributed along the circumferential direction and disposed along the respective tangential positions. Alternatively, the rolling elements 14 may also take a spherical structure.

As shown in fig. 5, the base 1 includes a lower cover 11 and an upper cover 12 which are fastened to each other, 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; the first portion 31 of the rotating member 3 is provided at a center thereof with a through hole 33, and the positioning shaft 13 is inserted into the through hole 33 from a lower end of the through hole 33 and rotatably engaged with the through hole 33. Through setting up location axle 13 and lower cover 11 integrated into one piece, can assist the intensity that increases base 1 to improve structural stability, reduce the stability when the rotatory gesture of seat is adjusted, difficult emergence is rocked, and can also reduce part quantity, improve assembly efficiency.

As shown in fig. 5, the through hole 33 is a stepped hole, and includes a first hole section 331 and a second hole section 332, the first hole section 331 is located below and is matched with the positioning shaft 13, the diameter of the first hole section 331 is greater than that of the second hole section 332, a step is formed at a connection position, and the positioning shaft 13 is limited by the step to limit the degree of freedom of the downward movement of the rotating component 3. Thus, the stopper 15 and the stepped hole together restrict the degree of freedom of the rotating member 3 in the height direction.

As shown in fig. 5 and 12, the operation handle 4 is provided in the seat body 2 and can be pulled outward from the front end of the seat body 2, and a plurality of locking grooves 431 are provided at intervals in the front-rear direction at the top of the operation handle 4, and correspond to a plurality of reclining positions of the seat body 2, for example, three reclining positions may be provided.

On this basis, as shown in fig. 2, the locking and unlocking member further includes: a lock lever 5, such as a cylindrical pin, provided movably on the rotating member 3 along the preset axis, extending in the left-right direction of the seat body 2, and having both ends inserted into the first guide groove 34; and a limit groove 131 formed on the top surface of the positioning shaft 13, wherein the top surface of the positioning shaft 13 may be higher than a step surface between the first hole section 331 and the second hole section 332, so that the locking rod 5 can enter or leave the limit groove 131. As shown in FIG. 13, the retaining groove 131 includes at least four radial groove segments, with opposing groove segments being collinear and communicating at their inner ends.

When the operating handle 4 is pulled outwards, the locking rod 5 is forced to be pulled upwards out of the clamping groove 431 to leave the limiting groove 131, so that the locking and unlocking part is in an unlocking state, and the front-back inclination angle and the rotation angle around the preset axis of the seat body 2 relative to the base 1 are adjustable; when the locking lever 5 is inserted into one of the locking grooves 431, the locking lever 5 is inserted into one of the opposing groove sections from above the limiting groove 131, so that the locking/unlocking member is in a locked state, and the seat body 2, the rotating member 3, and the base 1 are fixed as a whole. The number of sets of opposite groove sections is consistent with the gear of the seat body 2 for rotary adjustment. As shown in fig. 14, the seat body 2 is rotated to the forward position; as shown in fig. 15, the seat body 2 is rotated to the leftward position; as shown in fig. 16, the seat body 2 is rotated to the rearward position; as shown in fig. 17, the seat body 2 is rotated to the right position.

Specifically, as shown in fig. 13, the positioning shaft 13 includes a middle shaft 132 and an outer ring 133 that are coaxially disposed, the middle shaft 132 and the outer ring 133 may be connected by a reinforcing rib, so that the structural strength of the positioning shaft 13 is improved while the weight is reduced, the top surface of the middle shaft 132 is higher than the top surface of the outer ring 133, and the limiting groove 131 is formed in the top surface of the middle shaft 132, so that the locking rod 5 can be reliably inserted into the limiting groove 131 to prevent interference with the outer ring 133, thereby improving the reliability of the operation of the locking and unlocking member.

The embodiment can drive the locking rod 5 to switch between the locking state and the unlocking state through the movement of the operating handle 4, and has simple structure and reliable action; further, in a state where the lock lever 5 is disengaged from the stopper groove 131, the seat can be flexibly adjusted in the front-rear inclination angle or the rotational posture, or the seat body 2 can be adjusted in the front-rear inclination angle and the rotational posture at the same time, whereby the seat posture can be adjusted more conveniently and easily.

Further, as shown in fig. 5, the rotating member 3 is provided with first guide grooves 34, which may be, for example, oblong holes, on both left and right sides of the through hole 33, and the first guide grooves 34 extend along a center line of the positioning shaft 13, and serve to guide the movement of the locking lever 5 along a predetermined axis with respect to the rotating member 33 and limit a limit stroke of the up-and-down movement of the locking lever 5. In the unlocked state, the lock lever 5 is located at the top end of the first guide groove 34; in the locked state, the lock lever 5 is located at the bottom end of the first guide groove 34.

By providing the first guide groove 34, it is possible to guide the movement of the lock lever 5, so that the lock lever 5 moves smoothly and accurately enters or leaves the stopper groove 131, and the state switching operation of the lock/unlock mechanism is reliable.

Further, as shown in fig. 5, the seat may further include a first returning element 8, such as a spring, connected between the locking lever 5 and the positioning shaft 13 for returning the locking lever 5 out of the limit groove 131 to return the locking and unlocking member to the locked state after the seat posture adjustment is completed. Specifically, as shown in fig. 13, one end of the first reset element 8 may be connected to a central intersection position of each groove segment of the limiting groove 131, and the other end is connected to an intermediate position of the locking rod 5 along its length direction, so that the locking rod 5 is stressed in a balanced manner during movement, and is prevented from tilting, and locking and unlocking can be accurately and reliably achieved.

As shown in fig. 4, a second guide groove 21 is provided in the seat body 2 for guiding the movement of the positioning rod 5 into and out of each of the catching grooves 431 when adjusting the seat front-rear inclination angle. The second guide groove 21 includes: the first groove section 211 is arc-shaped, 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 groove segments 212 extending along the center line of the positioning shaft 13, each of the second groove segments 212 communicating with the first groove segment 211, for example, the second groove segments 212 may extend downward from the first groove segment 211 for guiding the lock lever 5 into different detent grooves 431, and the number of the second groove segments 212 is the same as the number of the steps of reclining the seat body 2.

This embodiment enables the locking lever 5 to move smoothly when the seat reclining is forward or backward, and to accurately enter or escape from each of the catching grooves 431, thereby making the seat reclining more reliable. When the seat body 2 is at a certain inclination, the locking levers 5 are fitted into the respective catching grooves 431 while being positioned at the bottom ends of the respective second groove sections 212. When the inclination angle of the seat body 2 needs to be adjusted, the locking rod 5 can be driven to move upwards along the second groove section 212 to be separated from the current blocking groove 431 by pulling the operating handle 4 outwards, when the forward and backward inclination angles of the seat body 2 are adjusted, the locking rod 5 can be driven to move along the first groove section 211 and enter the adjacent second groove section 212 by the movement of the seat body 2, and the locking rod 5 is located at the bottom end of the second groove section 212 again under the action of the first resetting element 8 so that the seat body 2 is kept locked in the adjusted inclination angle gear position. If further adjustment of the pitch gear is required, and re-operation is performed as described above, the same operating method can be used for forward and backward pitch adjustment.

As shown in fig. 12, the operation handle 4 includes an operation section 41, a positioning section 42, and an engaging section 43 connected in sequence, and the operation section 41, the positioning section 42, and the engaging section 43 form an arc-shaped structure and are adapted to the shape of the lower front region of the seat body 2. The structure not only can save the occupied space of the operating handle 4 on the seat body 2, but also can obtain a better operating angle and save the operating space.

The user can switch the locking and unlocking member from the locking state to the unlocking state through the outward operation section 41, and a positioning block 421 protruding outward is provided on the positioning section 42, for example, the positioning block 421 can be provided on the lower surface of the positioning section 42 to cooperate with the guiding groove in the seat body 2 to provide a guide for the movement of the operation handle 4. The respective catching grooves 431 are provided at intervals in the longitudinal direction of the operation knob 4 on the top surface of the catching section 43.

Still referring to fig. 12, the catching groove 431 has a front side wall 4311 and a rear side wall 4312, and the rear side wall 4312 has a smaller inclination angle with respect to a horizontal plane than the front side wall 4311 to allow the locking lever 5 to escape from the catching groove 431 along a slope formed by the rear side wall 4312 when the manipulation knob 4 is pulled outward, and in the unlocked state, the locking lever 5 is located at the top of the boss 432 formed between the adjacent catching grooves 431.

As shown in fig. 1, the guide member includes: the first guide piece 6 and the second guide piece 7 are arranged on the seat body 2 and can adopt cylindrical pins and the like; and a third guide groove 321 and a fourth guide groove 322 provided on the second portion 32 and spaced apart in the front-rear direction of the seat body 2. Wherein the first guide 6 is engaged with the third guide groove 321, and the second guide 7 is engaged with the fourth guide groove 322 to provide guidance for the reclining of the seat body 2 together, for guiding the reclining of the seat body 2, and to limit the maximum adjustment range of the reclining of the seat body 2 by the length of the guide groove. For example, the third guide groove 321 and the fourth guide groove 322 may be circular-arc-shaped oblong holes, and the center of the oblong holes coincides with the center of the seat body 2 for adjusting the tilt angle.

Still referring to fig. 12, the operation knob 4 is provided inside the seat body 2, and can be pulled outward from the front end of the seat body 2 to effect unlocking of the lock-unlocking member. The operation handle 4 is provided with a boss portion 44, the boss portion 44 may be provided on the upper surface of the guide section 42 at a position close to the position of the position locking groove 431, the boss portion 44 may be provided with a fifth guide groove 441, for example, a circular arc-shaped oblong hole, the center of which coincides with the center of the seat body 2 for adjusting the tilt angle, the fifth guide groove 441 is engaged with the first guide member 6 for providing a guide for the movement of the operation handle 4, and when the operation handle 4 moves until the first guide member 6 is located at an end of the fifth guide groove 441 close to the position locking groove 431, the locking lever 5 is disengaged from the position locking groove 431 and is located between the adjacent position locking grooves 431 to form the top of the boss 432.

As shown in fig. 4, in the initial state, the first guide 6 is located at an end away from the detent groove 431 in the third guide groove 321. As shown in fig. 6, in the process of starting to pull the operating handle 4 outward, the first guide member 6 slides inward in the third guide groove 321 until the first guide member 6 moves to an end near the detent groove 431 in the third guide groove 321, and at this time, the lock lever 5 also moves upward into the first groove section 211 to be unlocked. If the operating handle 4 is further pulled outward, the seat body 2 is brought to change the inclination angle, and the lock lever 5 moves in the first groove section 211 to enter the next detent groove 431.

According to the inclination angle adjusting mode, when the operation handle 4 is pulled outwards, unlocking of the locking and unlocking component and inclination angle adjustment of the seat body 2 can be achieved in sequence, the operation is simple, the posture adjusting process can be simplified, one-hand operation can be achieved, and the narrow operation space in the vehicle can be adapted.

Further, the chair of the present invention may further comprise a second reset element 9 connected between the first guide 6 and the operating handle 4 for resetting the operating handle 4. As shown in fig. 2, the second restoring element 9 has one end connected to the first guide member 6 at an intermediate position along its length, and a second end connected to the guide section 42 of the operating handle 4.

In the unlocked state shown in fig. 6, when the operation knob 4 is released after the reclining of the seat body 2 is adjusted, the operation knob 4 returns to the state shown in fig. 4 by the second returning member 9, and the operation knob 4 can be automatically returned.

The posture adjustment principle of the seat of the present invention will be described with reference to fig. 3 to 10. The inclination angle of the seat is the included angle between the backrest of the seat body 2 and the vertical plane, for example, the seat has three inclination angle adjusting gears including a first inclination angle, a second inclination angle and a third inclination angle, wherein the first inclination angle is smaller than the second inclination angle, and the second inclination angle is smaller than the third inclination angle.

As shown in fig. 3, the seat body 2 is schematically shown in the first inclination angle state, the first guide 6 is located at the upper limit position of the third guide groove 321, and the second guide 7 is located at the left limit position of the fourth guide groove 322. At the first inclination angle, the lock lever 5 is fitted into one of the opposing groove sections and located at the bottom end of the first guide groove 34, so that the lock-unlock member is in the locked state, thereby fixing the seat body 2, the rotary member 3, and the base 3 together, at which the seat posture cannot be adjusted.

As shown in fig. 4, the seat body 2 is in a state of hiding the rotating member 3 at the first inclination angle, at this time, the locking lever 5 is in the rightmost detent groove 431, and the first guide 5 is located at one end of the fifth guide groove 441 away from the detent groove 431.

As shown in fig. 5, when the seat posture needs to be adjusted, when the operation handle 4 is pulled outward, the locking lever 5 is moved upward along the rear side wall 4312 of the locking groove 431 by the guide of the first guide groove 34 until reaching the top of the boss 432 between the adjacent locking grooves 431, and at this time, the locking lever 5 is positioned at the top end of the first guide groove 34, so that the locking/unlocking member is switched to the unlocked state, and at this time, the forward/backward tilt angle adjustment and the rotation adjustment of the seat body 2 can be simultaneously allowed.

As shown in fig. 6, the rotary member 3 is hidden when the operation knob 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 catching groove 431, and the locking lever 5 moves along the rightmost second groove section 212 from the bottom end to the top end.

As shown in fig. 7, pulling the operating handle 4 outward further applies a force to the seat body 2, thereby bringing the seat body 2 to a rearward tilt angle, and at the same time, the locking lever 5 moves leftward along the first groove section 211 to adjust the seat body 2 to a second tilt angle. At the second inclination angle, the first guide 6 and the second guide 7 are respectively located at the middle positions of the third guide groove 321 and the fourth guide groove 322 in the respective length directions.

As shown in fig. 8, when the locking lever 5 moves leftward along the first slot segment 211 to enter the intermediate detent groove 431, the operating handle 4 is released, the operating handle 4 is pulled back inward by the second returning element 8, so that the first guide 6 remains at a position where the fifth guide groove 441 is away from the detent groove 431, and the locking lever 5 enters the bottom end of the second slot segment 212 at the intermediate position, so that the seat body 2 is locked at the second inclination angle position.

As shown in fig. 9, in order to schematically illustrate the state in which the seat body 2 is adjusted to the third inclination angle, the first guide 6 is located at the lower limit position of the third guide groove 321, and the second guide 7 is located at the right limit position of the fourth guide groove 322. The inclination angle is suitable for the child to lie in a half lying posture when riding, and is suitable for the child to use when the child is tired or falls asleep in a car.

As shown in fig. 10, which is a schematic view of hiding the rotary member 3 when the seat body 2 is adjusted to the third inclination angle, the locking lever 5 is at the bottom end of the leftmost second groove section 212, so that the locking and unlocking member is in the locked state.

The above is to the child safety seat provided by the present invention is described in detail. The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to aid in understanding the methods and their core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A child safety seat, comprising:

a base (1);

the seat body (2) is arranged above the base (1);

a rotating member (3) provided between the seat body (2) and the base (1); and

a locking and unlocking member including an operating handle (4) for effecting at least switching of the locking and unlocking member from a locked state in which the rotating member (3), the base (1) and the seat body (2) are relatively fixed to each other to an unlocked state; when the unlocking state is switched to by the operating handle (4), the front and back inclination angle of the seat body (2) relative to the base (1) and the rotation angle around the preset axis are both adjustable.

2. The child safety seat according to claim 1, wherein the rotary member (3) is rotatably provided about the preset axis with respect to the base (1) to adjust the rotation angle of the seat body (2), and the forward-backward inclination of the seat body (2) with respect to the rotary member (3) is adjustable.

3. Child safety seat according to claim 1 or 2, characterized in that the rotating part (3) comprises:

a first portion (31) rotatably connected to said base (1) with respect to said preset axis; and

and a second portion (32) connected above the first portion (31) and provided in the seat body (2), wherein a guide member is provided between the second portion (32) and the seat body (2) for guiding the seat body (2) for adjusting the forward and backward inclination angle of the rotating member (3).

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

5. Child safety seat according to claim 3, characterized in that the base (1) comprises a lower cover (11) and an upper cover (12) that snap into each other,

the child safety seat further comprises a limiting piece (15), wherein the limiting piece (15) is arranged between the upper cover (12) and the lower cover (11), fixed with the lower cover (11) and pressed on the outer edge of the first portion (31) and used for limiting the degree of freedom of the rotating component (3) which is upwards separated from the lower cover (11).

6. A child safety seat according to claim 3, characterized in that the first portion (31) is of disc-like configuration, the second portion (32) is of arc-like configuration and is adapted to the shape of the bottom region of the seat body (2), a first end of the second portion (32) extends forward to a middle region of the seat plate of the seat body (2), and a second end of the second portion (32) extends upward to a middle region of the back plate of the seat body (2).

7. The child safety seat according to claim 6, wherein the base (1) comprises a lower cover (11) and an upper cover (12) which are fastened to each other, the child safety seat further comprises a limiting member (15), the limiting member (15) is in a ring-shaped plate-shaped structure, an outer end of the limiting member (15) in the radial direction is fixed with the lower cover (11), and an inner end of the limiting member in the radial direction is pressed against the first portion (31) and protrudes out of an outer edge of the second portion (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 member (3) and the base (1), and a rolling body (14) is arranged between the bottom surface of the rotating member (3) and the matching surface of the base (1).

9. The child safety seat according to claim 1, wherein the base (1) comprises a lower cover (11) and an upper cover (12) which are fastened with each other, a positioning shaft (13) is arranged 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 the preset axis;

be equipped with through-hole (33) on rotary part (3), location axle (13) follow the lower extreme of through-hole (33) inserts in through-hole (33), and with through-hole (33) rotationally cooperate.

10. The child safety seat according to claim 9, wherein the through hole (33) is a stepped hole, and comprises a first hole section (331) and a second hole section (332), the first hole section (331) is located below and is engaged with the positioning shaft (13), the first hole section (331) has a larger diameter than the second hole section (332), and forms a step at a junction, and the positioning shaft (13) is stopped by the step to limit the degree of freedom of downward movement of the rotating member (3).

11. The child safety seat according to claim 9, wherein the operating handle (4) is provided in the seat body (2) and can be pulled outward from the front end of the seat body (2), and a plurality of detent grooves (431) are provided at intervals in the front-rear direction at the top of the operating handle (4) and respectively correspond to a plurality of reclining positions of the seat body (2);

the locking and unlocking member further includes:

a lock lever (5) provided on the rotary member (3) movably along the preset axis and extending in the left-right direction of the seat body (2); and

the limiting groove (131) is formed in the top surface of the positioning shaft (13), the limiting groove (131) comprises at least four radial groove sections, the opposite groove sections are collinear, and the inner ends of the opposite groove sections are communicated;

when the operating handle (4) is pulled outwards, the locking rod (5) is forced to be pulled upwards out of the clamping groove (431) to leave the limiting groove (131), so that the locking and unlocking component is in an unlocking state; when the locking rod (5) is embedded into one of the clamping grooves (431), the locking rod (5) is embedded into one of the opposite groove sections from above the limiting groove (131), so that the locking and unlocking component is in a locking state.

12. Child safety seat according to claim 11, characterized in that a first guide groove (34) is provided in the rotary part (3), said first guide groove (34) extending along the centre line of the positioning shaft (13) for guiding the movement of the locking lever (5) relative to the rotary part (3) along a predetermined axis;

in the locked state, the locking lever (5) is located at the bottom end of the first guide groove (34); in the unlocked state, the lock lever (5) is located at the top end of the first guide groove (34).

13. The child safety seat according to claim 11, further comprising a first reset element (8) connected between the locking lever (5) and the positioning shaft (13) for resetting the locking lever (5) disengaged from the retaining groove (131).

14. The child safety seat according to claim 11, wherein a second guide groove (21) is provided in the seat body (2), the second guide groove (21) comprising:

the first groove section (211) is arc-shaped, and the circle center of the first groove section is consistent with the circle center of the seat body (2) for adjusting the inclination angle; and

a plurality of second groove sections (212) extending along the center line of the positioning shaft (13), each second groove section (212) communicating with the first groove section (211) for guiding the locking lever (5) into a different detent groove (431).

15. Child safety seat according to claim 11, characterized in that the detent groove (431) has a front side wall (4311) and a rear side wall (4312), the rear side wall (4312) having a smaller inclination with respect to the horizontal than the front side wall (4311) so that the locking lever (5) is disengaged from the detent groove (431) along the rear side wall (4312) when the operating handle (4) is pulled outwards, in the unlocked state the locking lever (5) being located at the top of the boss (432) formed between adjacent detent grooves (431).

16. The child safety seat according to claim 3, wherein the guide member comprises:

a first guide (6) and a second guide (7) provided on the seat body (2); and

a third guide groove (321) and a fourth guide groove (322) provided on the second portion (32) and spaced apart in the front-rear direction of the seat body (2) for limiting the maximum adjustment range of the front-rear tilt angle of the seat body (2);

wherein the first guide (6) cooperates with the third guide slot (321) and the second guide (7) cooperates with the fourth guide slot (322) to collectively provide guidance for fore and aft recliner adjustment of the seat body (2).

17. The child safety seat according to claim 16, wherein the operating handle (4) is disposed in the seat body (2) and can be pulled outwards from the front end of the seat body (2) to unlock the locking and unlocking member, a plurality of detent grooves (431) are disposed at intervals along the front-rear direction on the top of the operating handle (4) and respectively correspond to a plurality of tilt angle adjustment positions of the seat body (2), and the locking and unlocking member further comprises a locking rod (5) movably disposed on the rotating member (3) along the preset axis;

the operation handle (4) is provided with a fifth guide groove (441), the operation handle is matched with the first guide piece (6) and used for providing guidance for movement of the operation handle (4), the operation handle (4) moves to the position, where the first guide piece (6) is located, of the fifth guide groove (441) is close to one end of the clamping groove (431), the locking rod (5) is separated from the clamping groove (431) and is located at the position adjacent to the top of the boss (432) formed between the clamping grooves (431).

18. The child safety seat according to claim 17, wherein the operating handle (4) is provided 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 member;

the child safety seat further comprises a second resetting element (9) connected between the first guide (6) and the operating handle (4) for resetting the operating handle (4).

19. The child safety seat according to claim 1, wherein the predetermined axis is inclined forwardly.