CN220923890U - Child car safety seat and supporting body - Google Patents

Abstract

The utility model discloses a child car safety seat, which comprises a seat body and a support body, wherein the seat body is provided with a base part, the support body is detachably connected with the base part, the child car safety seat also comprises a locking mechanism for locking and connecting the support body with the base part, the locking mechanism comprises a locking piece and a matching piece, the locking piece is movably connected with one of the support body and the base part, and the matching piece is connected with the other one of the support body and the base part; when the locking mechanism is in a locking state, the locking piece is in fit connection with the matching piece; when the locking mechanism is in an unlocking state, the locking piece is disengaged from the matching piece. The supporting body of the child car safety seat is detachably connected with the seat body, the dismounting mode is simple, the child car safety seat at least has two using modes, the supporting piece of the supporting body can assist in supporting, and the supporting body is more stable and safe when being installed on the car seat.

Description

Child car safety seat and supporting body

Technical Field

The utility model relates to the field of children products, in particular to a child car safety seat and a support body.

Background

Child car safety seats are an essential safety article for children to sit in a car. Common child car safety seat includes seat, back, head rest, handrail etc. and a plurality of surrounds form the space of taking of laminating children's health, can provide safe comfortable constraint for children. With the growth of the body of the child, the original riding space of the safety seat is gradually relatively narrow, and the child can not ride in the safety seat comfortably; however, if the child sits directly on the car seat, the car seat belt cannot be effectively restrained due to the short height of the child, so that the safety is poor. Therefore, the heightening seat cushion suitable for the elderly children to sit on the automobile is also available on the market, the riding height of the children can be improved, and the comfort and the safety are better when the heightening seat cushion is matched and bound with an automobile safety belt. Therefore, for a general household, at least two automobile safety products such as a child automobile safety seat, a heightened seat cushion and the like are required to be purchased, the service life of each product is short, and the household expense is increased.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides the child car safety seat with novel structure and convenient use and the support body suitable for the child car safety seat.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

A child car safety seat comprising a seat body and a support body, the seat body having a base portion, the support body being detachably connected to the base portion, the child car safety seat further comprising a locking mechanism for locking connection of the support body to the base portion, the locking mechanism comprising a locking member and a mating member, the locking member being movably connected to one of the support body and the base portion, the mating member being disposed in the other of the support body and the base portion; when the locking mechanism is in a locking state, the locking piece is in fit connection with the matching piece; when the locking mechanism is in an unlocked state, the locking piece is disengaged from the matching piece.

In some embodiments, the locking mechanism has at least two sets spaced apart along the circumference of the support body; and/or the locking mechanism is provided with two groups which are respectively arranged at the left side and the right side of the support body.

In some embodiments, the support is disposed above the base portion when the support is cooperatively coupled to the base portion.

In some embodiments, one of the support body and the base portion has a mounting portion and the other has a mounting groove into which the mounting portion is fittingly inserted when the support body is fittingly connected with the base portion.

In some embodiments, the support body has a mounting portion protruding downward, and the base portion has a mounting groove with an opening facing upward, and the mounting portion is insertable into the mounting groove from above when the support body is coupled with the base portion.

In some embodiments, the base portion has an upwardly projecting mounting portion, and the support body has a downwardly opening mounting slot into which the mounting portion can be inserted from below when the support body is matingly coupled to the base portion.

In some embodiments, the support body has a seat surface on which a child can sit, at least part of the mounting groove penetrates the seat surface in an up-down direction, and when the support body is connected with the base part in a matched manner, the top of the mounting part is not higher than the seat surface.

In some embodiments, the child car seat further comprises a harness for restraining a child, at least a portion of the harness being capable of passing through the mounting slot from top to bottom and being connected to the mounting portion.

In some embodiments, the locking member is relatively rotatably connected to the support body or the base portion, and has a locking end portion that is cooperatively connected with the mating member when the locking mechanism is in a locked state; when the locking mechanism is in an unlocking state, the locking end part is disengaged from the matching piece; the locking mechanism further includes a resilient member for providing a force required to rotate the locking end toward the mating member.

In some embodiments, when the support body is cooperatively connected with the base portion, the support body is disposed above the base portion, the locking member is relatively rotatably connected to the support body, a rotation axis of the locking member extends along a circumferential direction of the support body, and when the locking mechanism is in a locked state, the locking end portion is located below the rotation axis.

In some embodiments, when the support body is cooperatively connected with the base portion, the support body is disposed above the base portion, the locking member is relatively rotatably connected to the base portion, a rotation axis of the locking member extends along a circumferential direction of the base portion, and the locking end portion is disposed above the rotation axis when the locking mechanism is in the locked state.

In some embodiments, one of the locking end and the mating piece has a hook slot and the other has a protrusion, the hook slot hooking to the protrusion when the locking mechanism is in a locked state.

In some embodiments, the elastic member is a compression spring, and the compression spring and the locking end portion are disposed on two different sides of a rotation axis of the locking member.

In some embodiments, the support body includes a seat cushion main body and a support member, the seat cushion main body has a receiving cavity, the support member is movably connected to the seat cushion main body, the support member has a supporting state and a receiving state, when the support member is in the supporting state, at least part of the support member is located outside the receiving cavity, and the support member and the bottom of the seat cushion main body can be supported on the same plane; when the supporting piece is in the storage state, the supporting piece is stored in the storage cavity.

In some embodiments, the support member has two parts disposed at left and right sides of the support body, and the receiving cavity has two parts corresponding to the two support members.

In some embodiments, the receiving cavity is formed in the bottom of the seat cushion body.

In some embodiments, the seat cushion body is provided with a first stopper structure for restricting the support member from being held in the stowed state; and/or the seat cushion body is provided with a second limit structure for limiting the support member to be kept in the support state.

In some embodiments, the support is relatively rotatably coupled to the seat cushion body.

In some embodiments, the downwardly facing side of the support is planar when the support is in the supported state.

In some embodiments, when the support body is connected with the base portion in a matching manner, the support body is arranged above the base portion, at least the bottom surface of the rear portion of the support body is an arc surface, and when the support member is in a supporting state, the support member is supported at the rear portion of the support body.

In some embodiments, the support body includes a seat cushion body having a seating surface for a child to sit on, and armrest portions provided separately on left and right sides of the seat cushion body.

In some embodiments, at least one of the armrest portions is provided with a cup holder having a cup slot opening upwardly.

The support body comprises a seat cushion main body and a support piece, wherein the seat cushion main body is provided with a containing cavity, the support piece is movably connected with the seat cushion main body, the support piece is provided with a support state and a containing state, when the support piece is in the support state, at least part of the support piece is positioned outside the containing cavity, and the support piece and the bottom of the seat cushion main body can be supported on the same plane; when the supporting piece is in the storage state, the supporting piece is stored in the storage cavity.

Due to the application of the technical scheme, the support body of the child car safety seat is detachably connected with the seat body, and the dismounting mode is simple and quick, so that the child car safety seat has at least two use modes, the service life of the child car safety seat is prolonged, and the household expense is saved. For children with smaller ages, parents can cooperatively connect the support body with the base part for use, and the support body and the seat body are enclosed together to form a smaller riding constraint space; for older children, the parent can dismantle the supporter and use alone, plays the effect that increases, and the support piece of supporter can auxiliary stay this moment for the supporter is more firm, safety when installing on car seat.

Drawings

In order to more clearly illustrate the technical solution of the present utility model, the drawings used in the description of the embodiments will be briefly described.

FIG. 1 is a schematic perspective view of a child car seat according to an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a child car seat according to another embodiment;

FIG. 3 is an exploded perspective view of the child car seat according to the present embodiment;

Fig. 4 is a schematic perspective view of the support body in the present embodiment, where the support member is in a storage state;

Fig. 5 is a schematic perspective view of the support body in the present embodiment, where the support member is in a supporting state;

FIG. 6 is a schematic side view of a child car seat according to the present embodiment;

FIG. 7 is a schematic longitudinal sectional view of the child car seat according to the present embodiment;

FIG. 8 is a schematic cross-sectional view of A-A of FIG. 6, with the left locking mechanism in a locked state;

FIG. 9 is an enlarged schematic view of FIG. 8 at B;

FIG. 10 is a schematic cross-sectional view of A-A of FIG. 6, with the left locking mechanism in an unlocked state;

FIG. 11 is an enlarged schematic view of FIG. 10 at C;

FIG. 12 is a schematic side view of the support in the present embodiment, wherein the support is in a storage state;

FIG. 13 is a schematic side view of the support in the present embodiment, wherein the support is in a supporting state;

fig. 14 is a schematic top view of the support body in the present embodiment;

FIG. 15 is a schematic view in section D-D of FIG. 14, with the support in a stowed condition;

FIG. 16 is a schematic view in section D-D of FIG. 14, with the support member in a supported state;

Wherein: 100. a seat body; 110. a base portion; 111. a mounting part; 1111. a boss; 120. a backrest part; 121. a side wing; 130. a head support part;

200. A support body; 201. a mounting groove; 2011. a connection port; 210. a seat cushion main body; 211. a housing chamber; 212. a hook; 213. positioning convex parts; 214. a seating surface; 220. a support; 221. a support surface; 222. a storage surface; 223. a clamping groove; 224. a positioning groove; 230. a handrail part; 240. a cup holder; 241. a cup groove; 1002. a second axis;

300. A locking mechanism; 310. a locking member; 311. a locking end; 311a, a hook groove; 312. a connecting end; 320. a mating member; 321. a convex portion; 330. an elastic member; 340. a rotating shaft; 1001. and rotating the axis line.

Detailed Description

Preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art.

Referring to fig. 1 to 16, the present embodiment provides a child car safety seat, which includes a seat body 100 and a support body 200 detachably connected to each other, and can be used together or the support body 200 can be used alone, so as to be suitable for children in different ages, and prolong the service life of the child car safety seat.

It should be noted that, the description of the directions such as "up and down", "left and right", "front and back", "inside and outside", etc. herein is based on fig. 1, and the directions observed by the child sitting in the child car seat facing the car driving direction when the child car seat is normally installed and used are defined, and these terms of directions are merely for convenience of description and understanding, and should not be construed as limiting the present utility model.

Referring to fig. 1 to 3, in the present embodiment, a seat body 100 has a base portion 110, and a support body 200 is detachably connected to the base portion 110. The seat body 100 further includes a backrest portion 120 and a head rest portion 130, wherein the base portion 110 extends in a substantially horizontal direction, the backrest portion 120 extends in a substantially vertical direction, the backrest portion 120 is disposed at a rear portion of the base portion 110, and is configured to support a back of a child, and the left and right sides of the backrest portion 120 are further provided with side wings 121 for protection; the head rest 130 is provided at an upper portion of the backrest 120, and can be used to support the head of a child. In this embodiment, when the support body 200 is cooperatively connected with the base portion 110, the support body 200 is disposed above the base portion 110, so that the support body 200 can be used to support the buttocks and legs of a child. In this way, the support body 200 and the seat body 100 together enclose a seating space in which a child can sit, and the child car safety seat further includes a harness (not shown) for restraining the child, so that the child can be securely restrained in the seating space, and the seating safety of the child of low age is ensured.

Referring to fig. 3 to 7, one of the support body 200 and the base portion 110 has a mounting portion 111, and the other has a mounting groove 201, and when the support body 200 is coupled with the base portion 110, the mounting portion 111 is fitted and inserted into the mounting groove 201, thereby limiting the coupling of the support body 200 and the base portion 110. In this embodiment, the base 110 has an upwardly protruding mounting portion 111, and the support 200 has a mounting groove 201 with a downward opening, so that the mounting portion 111 can be inserted into the mounting groove 201 from below to perform a positioning function when the support 200 is connected to the base 110. As further shown in fig. 14, the support body 200 has a seating surface 214 on which a child can sit, and at least a part of the mounting groove 201 penetrates the seating surface 214 in the up-down direction to form a connection port 2011, and when the support body 200 is connected to the base portion 110 in a mating manner, the top of the mounting portion 111 is not higher than the seating surface 214. In the present embodiment, the mounting portion 111 is disposed in the middle of the base portion 110 along the left-right direction, and the entire mounting portion 111 extends along the front-rear direction, and the partial top of the mounting portion 111 further protrudes upward to form a mounting table 1111; correspondingly, the mounting groove 201 is also provided in the middle of the support 200 and extends in the front-rear direction, the shape of the mounting groove 201 corresponds to the shape of the mounting portion 111, and the connection port 2011 is provided at a position corresponding to the upper and lower sides of the mounting base 1111. Thus, the user can easily connect the support body 200 with the base portion 110, ensure that the mounting position of the support body 200 is accurate, and can limit the position deviation of the support body 200 and the base portion 110 in the horizontal direction after the connection, thereby improving the stability and safety of the child car safety seat in use. Referring to fig. 7, in this embodiment, when the support body 200 is cooperatively connected with the base portion 110, the top surface of the mounting base 1111 is substantially flush with the seating surface 214, and the mounting base 1111 may actually form a part of the seating surface 214. On the other hand, at least part of the seat belt of the child car seat can pass through the mounting groove 201 from top to bottom and be connected with the mounting part 111, and a connecting structure such as a buckle can be arranged on the mounting table 1111, so that components such as a crotch belt in the seat belt can be connected with the buckle, which is equivalent to directly connecting the seat belt with the seat body 100, and is helpful for improving the connection strength and stability of the seat belt.

In other embodiments, the mounting portion 111 and the mounting groove 201 may be disposed in different manners. For example, the support body 200 has a mounting portion 111 protruding downward, and the base portion 110 has a mounting groove 201 opening upward, and the mounting portion 111 can be inserted into the mounting groove 201 from above when the support body 200 is coupled with the base portion 110.

Referring to fig. 6 to 11, in the present embodiment, the child car seat further includes a locking mechanism 300 for locking the support body 200 to the base portion 110. The locking mechanism comprises a locking piece 310 and a matching piece 320, wherein the locking piece 310 is movably connected with one of the supporting body 200 and the base part 110, and the matching piece 320 is arranged on the other one of the supporting body 200 and the base part 110. When the locking mechanism is in a locked state, the locking member 310 is cooperatively connected with the matching member 320 to lock the supporting body 200 and the base portion 110 to each other; when the locking mechanism 300 is in the unlocked state, the locking member 310 is disengaged from the engaging member 320, and the supporting body 200 and the base portion 110 can be disengaged from each other. In this embodiment, the locking mechanism 300 has two sets of locking mechanisms 300 disposed on the left and right sides of the support 200, and the two sets of locking mechanisms 300 are symmetrically disposed, so that the support 200 and the base 110 can be firmly locked from the left and right sides, and the user can operate and unlock the lock with both hands. In other embodiments, the locking mechanism 300 may be provided in only one group, or may have multiple groups arranged at intervals along the circumferential direction of the support body 200, so as to lock and connect the support body 200 and the base portion 110 from different positions, thereby improving stability.

Referring to fig. 6 to 11, in each set of locking mechanisms 300, a locking member 310 is rotatably coupled to the support body 200 or the base portion 110, and the locking member 310 has a locking end 311. When the locking mechanism 300 is in the locked state, the locking end 311 is cooperatively connected with the mating piece 320; when the locking mechanism 300 is in the unlocked state, the locking end 311 is disengaged from the mating member 320. Each set of locking mechanisms 300 further includes a resilient member 330 for providing the force required to rotate the locking end 311 toward the mating member 320. In this embodiment, the locking member 310 on each side is specifically rotatably connected to the support body 200, the locking member 310 is connected to the support body 200 by a rotation shaft 340, a rotation axis 1001 of the locking member 310 extends along the circumferential direction of the support body 200, the rotation axis 1001 extends in a substantially horizontal direction, and here, the rotation axes 1001 on the left and right sides extend obliquely in a front-rear direction, and the rotation axes 1001 are substantially parallel. When the lock mechanism 300 is in the locked state, the lock end 311 thereof is located below the rotational axis 1001.

Further, in the present embodiment, in each set of locking mechanism 300, one of the locking end portion 310 and the mating member 320 has a hook slot 311a, and the other has a protrusion 321, and when the locking mechanism 300 is in the locked state, the hook slot 311a is hooked on the corresponding protrusion 321, so as to achieve locking. Referring to fig. 6 to 11, in the present embodiment, in each set of locking mechanisms 300, the locking end 311 of the locking member 310 has a hook groove 311a, and the mating member 320 has a protrusion 321, respectively. In this embodiment, the elastic member 330 is specifically a compression spring, the compression spring and the locking end 311 are disposed on two different sides of the rotation axis 1001, where a portion of the locking member 310 located on the other side of the rotation axis 1001 is referred to as a connection end 312, and two ends of the compression spring respectively abut against between the support 200 and the connection end 312, so as to apply an elastic force pushing outwards to the connection end 312 to drive the locking end 311 on the other side to rotate inwards. Therefore, the compression spring can drive the locking end 311 to be buckled with the convex 321 at the corresponding position under the action of no external force. When a user needs to unlock the locking mechanism 300, the user only needs to press the connecting end 312 inwards to overcome the elastic force of the elastic member 330, so as to drive the locking end 311 to be away from the protruding portion 321 and disengage from the protruding portion, thereby realizing unlocking. In this embodiment, since the locking mechanism 300 has two sets of two sides, the user needs to press the connecting ends 312 on both sides simultaneously to unlock the two sets of locking mechanisms 300 simultaneously, so that the supporting body 200 can be lifted up smoothly and detached from the base portion 110. On the contrary, when the user needs to mount the detached support body 200 back to the base portion 110, the mounting groove 201 of the support body 200 is only required to be correspondingly buckled on the mounting portion 111 of the base portion 110, the locking mechanisms 300 on two sides can be correspondingly positioned, and the locking pieces 310 on each side can be automatically buckled into the convex portions 321 on the corresponding positions under the action of the respective elastic pieces 330, so that quick locking is realized.

In other embodiments, the locking mechanism 300 may have other arrangements, for example, the locking member 310 may be rotatably connected to the base portion 110, the corresponding mating member 320 is disposed on the supporting body 200, the rotation axis of the locking member 310 extends along the circumferential direction of the base portion 110, and when the locking mechanism 300 is in the locked state, since the supporting body 200 is located above the base portion 110, the locking end 311 of the locking member 310 may also be located above the rotation axis thereof.

Referring to fig. 12 to 16, in the present embodiment, the support body 200 includes a seat cushion body 210, a support 220, and armrest portions 230 and the like provided separately on both left and right sides of the seat cushion body 210. Wherein the seat cushion body 210 has a seating surface 214 for seating a child. At least one of the armrest portions 230 is provided with a cup holder 240, the cup holder 240 having a cup slot 241 opening upwardly. In this embodiment, the left and right handrails 230 are respectively provided with cup holders 240 for parents or children to put water cups, milk bottles, etc.

Further, the seat cushion body 210 in the present embodiment has a receiving cavity 211, the supporting member 220 is movably connected to the seat cushion body 210, and the supporting member 220 has a supporting state and a receiving state: as shown in fig. 13 and 16, when the supporting member 220 is in the supporting state, at least a portion of the supporting member 220 is located outside the accommodating cavity 211, the supporting member 220 and the bottom of the seat cushion main body 210 can be supported on the same plane, and the supporting member 220 can be used for improving the placement stability of the supporting member 200 when the supporting member 200 is used alone; as shown in fig. 12 and 15, when the supporting member 220 is in the storage state, the supporting member 220 is stored in the storage cavity 211, so that the mating connection between the supporting body 200 and the base portion 110 is not affected.

Referring to fig. 4 and 5, in the present embodiment, the supporting member 220 has two supporting members 200 disposed on the left and right sides of the supporting member 200, the two supporting members 200 are disposed on the left and right sides of the mounting groove 201, and the two supporting members 200 are symmetrically disposed. The receiving cavities 211 have two corresponding to the two supporting members 220, and each receiving cavity 211 has a shape corresponding to the shape of the supporting member 220. Referring to fig. 15 and 16, two receiving cavities 211 are specifically formed at the bottom and the rear of the seat cushion main body 210, and each support 220 is connected to the seat cushion main body 210 in a relatively rotatable manner, specifically, one end of the support 220 is connected to the seat cushion main body 210 in a relatively rotatable manner about a second axis 1002, and the second axis 1002 extends in the left-right direction, so that the support 220 can be opened and closed in a front-rear direction.

Referring to fig. 3, 12 and 13, in the present embodiment, at least the bottom surface of the rear portion of the support body 200 is an arc surface, specifically an arc surface that gradually bends upwards from front to back, and the bottom surface of the front portion of the support body 200 is relatively horizontal; the base portion 110 has an arc-shaped top surface corresponding to the bottom surface of the support body 200, so that the support body 200 can be stably attached to the base portion 110, and the base portion 110 can provide a uniform and stable supporting force for the support body 200 from below. In this embodiment, each supporting member 220 has a supporting surface 221 and a receiving surface 222 disposed on two opposite sides of the second axis 1002, wherein the supporting surface 221 is a plane, and the receiving surface 222 is a cambered surface. When the supporting member 220 is in the supporting state, the downward side of the supporting member 220 is a plane, i.e. the supporting surface 221 is downward, and the supporting member 220 is supported at the rear of the supporting member 200 and can be supported at the same plane with the bottom surface of the front of the supporting member 200, so that the supporting member 200 can be stably placed on the car seat; when the supporting member 220 is in the storage state, the storage surface 222 faces downward, and the storage surface 222 and the rear bottom surface of the supporting body 200 are located approximately in the same arc surface, so that the storage cavity 211 is not exposed, and the mating connection between the supporting body 200 and the base portion 110 is not affected.

Referring to fig. 15 and 16, in the present embodiment, the seat cushion main body 210 is provided with a first stopper structure for restricting the supporting member 220 from being maintained in the storage state, and/or the seat cushion main body 210 is provided with a second stopper structure for restricting the supporting member 220 from being maintained in the supporting state. In this embodiment, each of the left and right sides of the support body 200 is provided with a set of first limiting structures and a set of second limiting structures. Specifically, the first limiting structure is a hook 212, the hook 212 protrudes downwards from the inner side wall of the accommodating cavity 211, and a clamping groove 223 is correspondingly formed on one side of the supporting surface 221 of the supporting member 220, so that when the supporting member 220 is in the accommodating state, the hook 212 is clamped in the clamping groove 223, and the hook 212 and the supporting member are in damping fit, so that the supporting member 220 can be prevented from being separated from the accommodating cavity 211 under the action of self gravity. On the other hand, the second limiting structure specifically includes a positioning protrusion 213, where the positioning protrusion 213 protrudes downward from the inner side wall of the accommodating cavity 211, and the positioning protrusion 213 is specifically disposed at the rear side of the hook 212; correspondingly, the positioning groove 224 is formed on one side of the receiving surface 222 of the supporting member 220, so that when the supporting member 220 is in a supporting state, the positioning convex portion 213 is correspondingly clamped in the positioning groove 224, and the positioning convex portion are in damping fit, so that the supporting member 220 can be prevented from falling off under the action of self gravity, and the stability of the supporting member 220 is improved.

Referring to fig. 15 and 16, in the present embodiment, there is no complex locking mechanism between the supporting member 220 and the seat cushion main body 210, the matching structure of the supporting member and the seat cushion main body is simple, and the supporting member 220 can be driven to rotate by overcoming the acting force between the hook 212 and the clamping groove 223 or between the positioning protrusion 213 and the positioning groove 224 only by a little force of a user, so as to switch between the supporting state and the storage state.

In summary, the child car safety seat provided in this embodiment has at least two usage modes according to the needs of children in different ages, so that the service life of the child car safety seat is prolonged. The support body 200 is simply and quickly assembled and disassembled, and the support member 220 can be opened when the support body 200 is used alone to enhance the support stability, so that the safety and comfort of the child riding the support body 200 are improved.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims (15)

1. A child car safety seat, characterized in that: the child car safety seat comprises a seat body and a support body, wherein the seat body is provided with a base part, the support body is detachably connected with the base part, the child car safety seat further comprises a locking mechanism for locking and connecting the support body with the base part, the locking mechanism comprises a locking piece and a matching piece, the locking piece is movably connected with one of the support body and the base part, and the matching piece is arranged on the other one of the support body and the base part;

When the locking mechanism is in a locking state, the locking piece is in fit connection with the matching piece;

When the locking mechanism is in an unlocked state, the locking piece is disengaged from the matching piece.

2. The child car safety seat according to claim 1, wherein: the locking mechanism is provided with at least two groups which are arranged at intervals along the circumferential direction of the supporting body; and/or the locking mechanism is provided with two groups which are respectively arranged at the left side and the right side of the support body.

3. The child car safety seat according to claim 1, wherein: when the support body is connected with the base part in a matched manner, the support body is arranged above the base part.

4. The child car safety seat according to claim 1, wherein: one of the support body and the base part is provided with a mounting part, and the other is provided with a mounting groove, and when the support body is in matched connection with the base part, the mounting part is matched and inserted into the mounting groove.

5. The child car safety seat according to claim 4, wherein: the support body is provided with a mounting part protruding downwards, the base part is provided with a mounting groove with an upward opening, and when the support body is connected with the base part in a matching way, the mounting part can be inserted into the mounting groove from above; and/or the number of the groups of groups,

The base part is provided with an upward protruding mounting part, the supporting body is provided with a downward opening mounting groove, and the mounting part can be inserted into the mounting groove from below when the supporting body is connected with the base part in a matching way.

6. The child car safety seat according to claim 5, wherein: the support body is provided with the mounting groove, the support body is provided with a seat surface for children to sit, at least part of the mounting groove penetrates through the seat surface along the up-down direction, and when the support body is connected with the base part in a matched mode, the top of the mounting part is not higher than the seat surface.

7. The child car safety seat according to claim 6, wherein: the child car safety seat further comprises a safety belt for restraining the child, and at least part of the safety belt can penetrate through the mounting groove from top to bottom and is connected with the mounting part.

8. The child car safety seat according to claim 1, wherein: the locking piece can be connected to the supporting body or the base part in a relative rotating manner, and is provided with a locking end part which is matched and connected with the matching piece when the locking mechanism is in a locking state; when the locking mechanism is in an unlocking state, the locking end part is disengaged from the matching piece; the locking mechanism further includes a resilient member for providing a force required to rotate the locking end toward the mating member.

9. The child car safety seat according to claim 8, wherein: when the supporting body is in fit connection with the base part, the supporting body is arranged above the base part, the locking piece can be connected to the supporting body in a relatively rotatable manner, the rotation axis of the locking piece extends along the circumferential direction of the supporting body, and when the locking mechanism is in a locking state, the locking end part is positioned below the rotation axis; or alternatively, the first and second heat exchangers may be,

When the supporting body is matched and connected with the base part, the supporting body is arranged above the base part, the locking piece can be connected with the base part in a relatively rotating manner, the rotating axis of the locking piece extends along the circumferential direction of the base part, and when the locking mechanism is in a locking state, the locking end part is positioned above the rotating axis.

10. The child car safety seat according to claim 8, wherein: one of the locking end part and the matching piece is provided with a hook groove, and the other is provided with a convex part, when the locking mechanism is in a locking state, the hook groove is hooked on the convex part; and/or the number of the groups of groups,

The elastic piece is a pressure spring, and the pressure spring and the locking end part are arranged on two different sides of the rotation axis of the locking piece.

11. The child car safety seat according to any one of claims 1 to 10, wherein: the supporting body comprises a seat cushion main body and a supporting piece, the seat cushion main body is provided with a containing cavity, the supporting piece is movably connected with the seat cushion main body, the supporting piece is provided with a supporting state and a containing state,

When the supporting piece is in a supporting state, at least part of the supporting piece is positioned outside the accommodating cavity, and the supporting piece and the bottom of the seat cushion main body can be supported on the same plane;

when the supporting piece is in the storage state, the supporting piece is stored in the storage cavity.

12. The child car safety seat according to claim 11, wherein: the support piece is provided with two support pieces which are respectively arranged at the left side and the right side of the support body, and the accommodating cavity is provided with two corresponding support pieces; and/or the accommodating cavity is arranged at the bottom of the seat cushion main body; and/or the number of the groups of groups,

The seat cushion main body is provided with a first limiting structure for limiting the supporting piece to be kept in the storage state; and/or the number of the groups of groups,

The seat cushion main body is provided with a second limiting structure for limiting the supporting piece to be kept in the supporting state; and/or the support is connected with the seat cushion main body in a relatively rotatable manner; and/or the number of the groups of groups,

When the supporting piece is in a supporting state, the downward side surface of the supporting piece is a plane; and/or the number of the groups of groups,

When the supporting piece is in a supporting state, the supporting piece is supported at the rear part of the supporting piece.

13. The child car safety seat according to claim 1, wherein: the support body comprises a seat cushion main body and handrail parts which are respectively arranged at the left side and the right side of the seat cushion main body, and the seat cushion main body is provided with a seat surface for children to sit.

14. The child car safety seat according to claim 13, wherein: at least one of the armrest parts is provided with a cup stand, and the cup stand is provided with a cup groove with an upward opening.

15. A support body that can be used to children's car safety seat, characterized in that: the support body according to any one of claims 1 to 14, comprising a seat cushion body and a support member, wherein the seat cushion body is provided with a receiving cavity, the support member is movably connected to the seat cushion body, the support member is provided with a supporting state and a receiving state, when the support member is in the supporting state, at least part of the support member is positioned outside the receiving cavity, and the support member and the bottom of the seat cushion body can be supported on the same plane; when the supporting piece is in the storage state, the supporting piece is stored in the storage cavity.