CN212172003U

CN212172003U - Rotatable child car safety seat with inclination and height adjustment functions

Info

Publication number: CN212172003U
Application number: CN202020948948.0U
Authority: CN
Inventors: 江礼定
Original assignee: Jiaxing Tuguan Automobile Safety Seat Co ltd
Current assignee: Jiaxing Tuguan Automobile Safety Seat Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-12-18
Anticipated expiration: 2030-05-29

Abstract

The utility model relates to a safety seat technical field, the utility model discloses a technical scheme does: a rotatable child car safety seat with tilt and height adjustment, comprising: the front end of the base is provided with a telescopic rotary adjusting handle; the rotating mechanism comprises an upper rotating disc and a lower rotating disc which are arranged on the upper side and the lower side of the base, and four rotating gear notches matched with the rotating adjusting handle are uniformly arranged on the circumferential part of the upper rotating disc; the chair body cushion is fixed at the upper end of the upper rotating disc through a reclining adjusting mechanism, and the reclining adjusting mechanism comprises a first sliding block, a reclining adjusting handle, a reclining gear pin and a chair body cushion bracket; the chair back, the chair back with the chair cushion is connected, chair back department is connected with the head rest through head rest height control mechanism, head rest height control mechanism includes front shroud, head rest gear pin, dog, back of the body lid and meshbelt.

Description

Rotatable child car safety seat with inclination and height adjustment functions

Technical Field

The utility model relates to a safety seat technical field especially involves a rotatable children's car safety seat of area slope and altitude mixture control function.

Background

According to the relevant standards of the child car safety seat, the installation direction, the inclination angle and the headrest height of children in different age groups when using the child car safety seat are different. In order to increase the applicable age of the product, functions such as a tilting angle, a headrest height and seat rotation need to be integrated on one child car safety seat. However, excessive integration may lead to an excessively complex structure of the product, which may result in an oversized seat, unstable center of gravity, poor protection in case of collision, and increased cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rotatable children's car safety seat of area slope and altitude mixture control function.

The above technical purpose of the utility model is realized with following technical scheme:

a rotatable child car safety seat with tilt and height adjustment, comprising: the front end of the base is provided with a telescopic rotary adjusting handle;

the rotating mechanism comprises an upper rotating disc and a lower rotating disc which are arranged on the upper side and the lower side of the base, and four rotating gear notches matched with the rotating adjusting handle are uniformly arranged on the circumferential part of the upper rotating disc;

the chair body cushion is fixed at the upper end of the upper rotating disc through a reclining adjusting mechanism, and the reclining adjusting mechanism comprises a first sliding block, a reclining adjusting handle, a reclining gear pin and a chair body cushion bracket;

the chair back, the chair back with the chair cushion is connected, chair back department is connected with the head rest through head rest height control mechanism, head rest height control mechanism includes front shroud, head rest gear pin, dog, back of the body lid and meshbelt.

The utility model discloses a further set up to: the upper surface of the base is provided with a bowl-shaped groove, the central part of the base is provided with a first through hole, and the inner wall of the first through hole is provided with an annular check ring;

the upper rotating disc and the lower rotating disc are located in the first through hole and are separated through an annular retainer ring, and the upper rotating disc and the lower rotating disc are locked through bolts after being folded.

The utility model discloses a further set up to: the front end of the base is provided with a first groove, the first groove is communicated with the first through hole, and the rotary adjusting handle is arranged in the first groove in a sliding manner; and ISOFIX connectors are arranged on two sides of the rear end of the base.

The utility model discloses a further set up to: the quantity of first slider is two, and two first sliders are parallel arrangement, in the first spout on rotary disk surface was gone up in the lower part embedding of first slider, the sunken end of chair body cushion support lower surface both sides is stretched into on the upper portion of first slider, chair body cushion support upper end is through bolt locking chair body cushion.

The utility model discloses a further set up to: the upper rotating disc is convexly provided with two rows of inclined lying gear teeth which are arranged in parallel, the two rows of inclined lying gear teeth are positioned at the front ends of the inner sides of the two first sliding chutes, the side part of the chair body cushion bracket is penetrated with a second sliding chute, the side part of the inclined lying adjusting handle is penetrated with a special-shaped sliding chute, the special-shaped sliding chute is an L-shaped sliding chute, and the lower part of the chair body cushion bracket is concavely provided with a third sliding chute for the inclined lying adjusting handle to extend into; the reclining gear pin simultaneously passes through the special-shaped chute on the reclining adjusting handle and the second chute on the chair body cushion bracket and is clamped into the tooth position on the reclining gear tooth, and the two ends of the reclining gear pin are additionally provided with check rings for fixation.

The utility model discloses a further set up to: the rear end of the reclining adjusting handle is provided with a first connecting end, the rear side of the lower portion of the chair body cushion support is provided with a second connecting end, and the first connecting end is connected with the second connecting end through a first spring.

The utility model discloses a further set up to: the head rest lower part is stretched out and is had a strip piece, the middle part of chair body back vertically is provided with the confession the gliding fifth spout of strip piece, the middle part of fifth spout vertically is provided with one row of head rest gear hole, strip surface lower part end is equipped with the fourth spout, the dog install in the fourth spout, meshbelt one end with the dog is connected, the other end of meshbelt passes the head rest and stretches out from the head rest top, the strip piece slip of head rest sets up in the fifth spout of chair body back and right through the front shroud the strip piece is spacing, the front shroud with chair body back fixed connection.

The utility model discloses a further set up to: a square through hole is formed in the fourth sliding groove, a back cover is fixed in the square through hole, a round hole for a headrest gear pin to pass through is formed in the surface of the back cover, a second spring is further arranged between the headrest gear pin and the back cover, and the stop block is arranged in the fourth sliding groove in a sliding mode and is in contact with the headrest gear pin; a third spring is further arranged in the fourth sliding groove and is respectively contacted with the stop block and the inner wall of the top of the fourth sliding groove; the dog has the dysmorphism face in the one side that is close to headrest gear pin, the dysmorphism face is obtuse angle Z plane.

The utility model discloses a further set up to: thickened cotton is arranged on two sides of the headrest, positioning holes are formed in the outer portions of two sides of the backrest of the chair body and close to the upper portions, side impact protection blocks are fixed in the positioning holes, and ventilation grids are arranged in the middle of two sides of the backrest of the chair body.

To sum up, the utility model discloses following beneficial effect has:

1) the utility model uses a disc type rotating mechanism to realize the rotating function, uses a push-pull mechanism with a first slider and a reclining gear pin to realize the tilt adjusting function, and uses a stop pulled by a mesh belt and a headrest height adjusting mechanism of the headrest gear pin to realize the headrest height adjusting function;

2) the first through hole is added to the center of the base, the rotating laser and the reclining adjusting mechanism are integrated into a group of connecting mechanisms and are sunk and installed in the first through hole of the base, the mechanism is simplified, and the effect of lowering the center of gravity is achieved.

Drawings

Fig. 1 is a schematic structural diagram of the base of the present invention.

Fig. 2 is an operation schematic diagram of the rotating mechanism of the present invention.

Fig. 3 is an assembly view of the reclining mechanism of the present invention.

Fig. 4 is an operation schematic diagram of the reclining adjusting mechanism of the present invention.

Figure 5 is the assembly drawing of the headrest height adjusting mechanism of the utility model.

Figure 6 is the operation schematic diagram of the headrest height adjusting mechanism of the utility model.

FIG. 7 is a schematic view of a child car seat using a five-point harness.

FIG. 8 is a schematic view of a child car seat using a three-point car seat belt.

FIG. 9 is a schematic view of a child car seat back mounted using a three-point car seat belt attachment.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the drawings and the specific embodiments.

Referring to fig. 1 to 9, the present invention provides a rotatable child car safety seat with tilt and height adjustment functions, including: the front end of the base 2 is provided with a telescopic rotary adjusting handle 1; the rotating mechanism comprises an upper rotating disc 3 and a lower rotating disc 4 which are arranged on the upper side and the lower side of the base 2, and four rotating gear notches 3-1 matched with the rotating adjusting handle 1 are uniformly arranged on the circumferential part of the upper rotating disc 3; the chair body seat cushion 25 is fixed at the upper end of the upper rotating disc 3 through a reclining adjusting mechanism, and the reclining adjusting mechanism comprises a first sliding block 21, a reclining adjusting handle 22, a reclining gear pin 23 and a chair body seat cushion bracket 24; chair body back 31, chair body back 31 with chair body cushion 25 is connected, chair body back 31 department is connected with headrest 36 through headrest height adjustment mechanism, headrest height adjustment mechanism includes front shroud 32, headrest gear pin 33, dog 34, back of the body lid 35 and meshbelt 37.

Among the above-mentioned technical scheme, seat mainly contains base 2,

seat body cushion

25 and 36 three parts of head rest, and the base characteristic includes: the two sides are provided with ISOFIX connectors 43, and the front part is provided with a rotary adjusting handle 1; the chair body characteristics include: the seat body main body plastic part is divided into a seat body cushion 25 and a seat body backrest 31, the seat body cushion 25 and the seat body backrest 31 are provided with through holes, independent five-point safety belts or three-point automobile safety belts can be used for restraining according to the age of a user, the two sides of the seat body backrest 31 can be additionally provided with a ventilating grille 42 and a side impact protection component 41, and the back is provided with a safety belt restraint bayonet 31-3 for reverse installation of a seat.

A reclining adjusting mechanism of a rotating mechanism is arranged between the base 2 and the chair body cushion 25, wherein the upper rotating disc 3 and the lower rotating disc 4 are used for realizing the rotating function, and the first sliding chute 3-3, the reclining gear 3-2, the first sliding block 21, the reclining adjusting handle 22 with a special-shaped groove, the reclining gear pin 23 and the chair body cushion bracket 24 are used for realizing the reclining angle adjusting function. Through the combination of the arranged inclined gear teeth 3-2, the first sliding chute 3-3 and the first sliding block 21, the rotation function and the inclination adjusting function are integrated in one connecting mechanism, so that the effects of simplifying the mechanism and lowering the center of gravity are achieved.

The headrest feature includes: the lower part extends out of a slender strip block 36-3, the side wing is provided with thickened cotton 36-1, and the lower part of the side wing is provided with a guide hook 36-2 for restraining the automobile safety belt.

A special connecting mechanism is arranged between the chair body and the headrest, and comprises a front cover plate 32, a stop 34 with a trapezoidal groove, a headrest gear pin 33 and a headrest pin back cover 35, and the special connecting mechanism is matched with a gear hole 31-1 on the chair body backrest 31 and a fourth sliding groove 36-4 on the headrest 36 to realize the height adjusting function of the headrest 36.

Referring to fig. 1 and 2, a bowl-shaped groove is formed in the upper surface of the base 2, a first through hole is formed in the center of the base 2, and an annular retainer ring is arranged on the inner wall of the first through hole; the upper rotary table 3 and the lower rotary table 4 are positioned in the first through hole and are separated by an annular retainer ring, and the upper rotary table 3 and the lower rotary table 4 are locked by bolts after being folded; a first groove is formed in the front end of the base 2 and communicated with the first through hole, and the rotary adjusting handle 1 is slidably arranged in the first groove; and ISOFIX connectors 43 are arranged on two sides of the rear end of the base 2.

Accordingly, to achieve 360 degree rotation of the seat cushion 25, the bottom of the body cushion also has an arcuate surface to engage the bowl-like recess in the upper surface of the base 2.

In the above technical solution, the upper rotating disc 3 and the lower rotating disc 4 are located in the first through hole and spaced apart by the annular retainer ring, so that the rotating mechanism and the base 2 are connected into a whole, meanwhile, the upper rotating disc 3 of the rotating mechanism is connected with the seat cushion 25 of the chair body, and the seat cushion 25 of the chair body can rotate relative to the base 2 by rotating the upper rotating disc 3; the first groove is a convex groove, the rotary adjusting handle 1 is of a convex structure, the tail end of the rotary adjusting handle 1 extends into the first through hole, three second sliding blocks protrude from the lower surface of the rotary adjusting handle 1, the three second sliding blocks are arranged in a triangular shape, a sixth sliding groove is formed in the first groove corresponding to the second sliding blocks, the second sliding blocks move back and forth in the sixth sliding groove, a pushing block protrudes from the middle of the lower surface of the rotary adjusting handle 1, a pushing groove is formed in the first groove corresponding to the pushing block, the pushing block moves back and forth in the pushing groove, a fourth spring is connected to the pushing block, the other end of the fourth spring is in contact with the inner wall of the front end of the pushing groove, the fourth spring is in a normal state in an initial state, the tail end of the rotary adjusting handle 1 extends into a rotary gear notch 3-1 of the upper rotary disk 3, when the upper rotating disc 3 needs to be rotated, the rotary adjusting handle 1 is pulled outwards, then the rotary adjusting handle 3 can be freely rotated, the chair body cushion 25 is driven to rotate, after the rotary adjusting handle 1 is rotated to a proper position, the rotary adjusting handle 1 is loosened, and the fourth spring can push the tail end of the rotary adjusting handle 1 to be clamped into the corresponding rotary gear notch 3-1; the provision of the ISOFIX connector 43 provides an additional means of attachment to a car seat having a standard ISOFIX interface.

Referring to fig. 2 to 4, the number of the first sliding blocks 21 is two, two first sliding blocks 21 are arranged in parallel, the lower portions of the first sliding blocks 21 are embedded into the first sliding grooves 3-3 on the surface of the upper rotating disc 3, the upper portions of the first sliding blocks 21 extend into the recessed ends on the two sides of the lower surface of the seat cushion support 24, and the upper end of the seat cushion support 24 is locked to the seat cushion 25 through bolts;

two rows of inclined lying gear teeth 3-2 which are arranged in parallel are protruded out of the upper rotating disc 3, the two rows of inclined lying gear teeth 3-2 are both positioned at the front ends of the inner sides of the two first sliding grooves 3-3, a second sliding groove 24-1 is arranged on the side part of the chair body cushion bracket 24 in a penetrating manner, a special-shaped sliding groove 22-1 is arranged on the side part of the inclined lying adjusting handle 22 in a penetrating manner, the special-shaped sliding groove 22-1 is an L-shaped sliding groove, and the lower part of the chair body cushion bracket 24 is concavely provided with a third sliding groove 24-2 for the inclined lying adjusting handle 22 to extend into; the reclining gear pin 23 simultaneously passes through a special-shaped chute 22-1 on the reclining adjusting handle 22 and a second chute 24-1 on the chair body cushion bracket 24 and is clamped into a tooth position on the reclining gear tooth 3-2, and check rings are additionally arranged at two ends of the reclining gear pin 23 for fixing;

the end of the reclining handle 22 is provided with a first connecting end, and the rear side of the lower portion of the seat support 24 is provided with a second connecting end, and the first connecting end and the second connecting end are connected through a first spring 26.

In the above technical solution, the first sliding block 21 is embedded in the first sliding groove 3-3 of the upper rotating disc 3, so that the first sliding block 21 moves in the front-back direction in the first sliding groove 3-3, and the first sliding block 21 drives the seat cushion bracket 24 and the seat cushion 25 to move in the front-back direction; the first chute 24-1 is a vertically arranged rectangular through hole, the top and the bottom of the first chute 24-1 are both arc-shaped structures, and the reclining gear pin 23 moves up and down in the first chute 24-1; the special-shaped chute 22-1 is an L-shaped chute, the front end of the special-shaped chute 22-1 is horizontal, the rear end of the special-shaped chute 22-1 is inclined, and the included angle of the special-shaped chute 22-1 is an obtuse angle; the reclining adjusting handle 22 is made of an integrally molded plastic material, the reclining adjusting handle 22 comprises a handle end and a sliding end extending into the third sliding groove 24-2, and the special-shaped sliding groove 22-1 is arranged at the sliding end; the surface of the reclining gear tooth 3-2 is provided with a plurality of tooth positions, the first connecting end is positioned at the tail end of the sliding end, and the first spring 26 is arranged to ensure that the reclining adjusting mechanism is in a locking state. In the actual operation process, the reclining adjusting handle 22 is pulled out, and the first spring 26 is in an extended state at the moment, so that the reclining gear pin 23 moves along the special-shaped chute 22-1, that is, the reclining gear pin 23 moves towards the inclined end of the special-shaped chute 22-1 and pushes away the gear position of the reclining gear tooth 3-2; subsequently, the inclination angle of the seat cushion 25 can be changed by rocking the seat cushion 25 back and forth while maintaining the tightening posture, and when the reclining adjustment handle 22 is released after the adjustment to a certain angle, the first spring 26 is contracted, so that the reclining adjustment handle 22 is retracted, and at the same time, the reclining position pin 23 falls back into the tooth position of the corresponding reclining position tooth 3-2, so that the seat cushion 25 is maintained at the adjusted angle.

Referring to fig. 5 and 6, a bar 36-3 extends from the lower portion of the headrest 36, a fifth sliding slot 31-4 for the bar 36-3 to slide is longitudinally formed in the middle of the backrest 31 of the chair body, a row of headrest gear holes 31-1 are longitudinally arranged in the middle of the fifth sliding groove 31-4, the tail end of the lower part of the surface of the strip block 36-3 is provided with a fourth sliding groove 36-4, the stop block 34 is arranged in the fourth sliding groove 36-4, one end of the webbing 37 is connected to the stopper 34, the other end of the webbing 37 passes through the headrest 36 and extends out from above the headrest 36, the bar block 36-3 of the headrest 36 is slidably arranged in the fifth sliding groove 31-4 of the chair body backrest 31 and is limited by the front cover plate 32, and the front cover plate 32 is fixedly connected with the chair body backrest 31;

a square through hole is formed in the fourth sliding groove 36-4, a back cover 35 is fixed in the square through hole, a round hole for the headrest gear pin 33 to pass through is formed in the surface of the back cover 35, a second spring 39 is further arranged between the headrest gear pin 33 and the back cover 35, and the stopper 34 is slidably arranged in the fourth sliding groove 36-4 and is in contact with the headrest gear pin 33; a third spring 38 is further arranged in the fourth sliding chute 36-4, and the third spring 38 is respectively contacted with the stop block 34 and the top inner wall of the fourth sliding chute 36-4; the stop 34 has a profiled surface on a side close to the headrest gear pin 33, which is an obtuse-angle Z-shaped surface.

In the technical scheme, the bar 36-3 moves up and down in the fifth chute 31-4, so that the headrest 36 moves up and down relative to the backrest 31 of the chair body; the special-shaped surface comprises a first plane, an inclined surface connected with the first plane and a second plane connected with the inclined surface, the first plane and the second plane are arranged in parallel, the inclined surface and the first plane and the second plane are arranged in an obtuse angle, in an initial state, the first plane is in contact with the headrest gear pin 33, the second spring 39 is compressed, and the headrest gear pin 33 at the moment extends out of a round hole at the back cover 35 and extends into the headrest gear hole 31-1 to keep the headrest 36 still; in operation, the webbing 37 is pulled upwards to drive the stopper 34 to ascend, at this time, the third spring 38 is in a compressed state, as the stopper 34 ascends, the headrest gear pin 33 moves along the profiled surface, the headrest gear pin 33 initially contacts with the first plane of the profiled surface, as the second spring 39 is in the compressed state, as the headrest gear pin 33 gradually contacts with the inclined surface, the second spring 39 drives the headrest gear pin 33 to continuously extend towards the inclined surface until the headrest gear pin 33 contacts with the second plane, at this time, the headrest gear pin 33 is separated from the headrest gear hole 31-1, then the height of the headrest 36 can be changed by keeping the state of ascending or pressing the headrest 36, when the height of the headrest 36 is adjusted, the webbing 37 is released, as the third spring 38 is in the compressed state, at this time, the third spring 38 drives the stopper 34 to descend and return to the initial position, the headrest position pin 33 returns to the first plane through the second plane and the inclined plane, so that the headrest position pin 33 contacts the first plane, and the headrest position pin 33 is pushed out and clamped into the headrest position hole 31-1, so that the headrest 36 is maintained at the adjusted height.

Referring to fig. 7 to 9, thickened cotton 36-1 is disposed on two sides of the headrest 36, positioning holes are disposed on the outer portions of two sides of the seat back 31, side impact protection blocks 41 are fixed in the positioning holes, and air permeable grilles 42 are disposed in the middle of two sides of the seat back 31.

In the technical scheme, the thickened cotton 36-1 is arranged to prevent the head of the child from slipping out; positioning holes are arranged on the outer parts of the two sides of the chair body backrest 31, and a side impact protection block 41 can be additionally arranged to additionally provide protection against side impact; the middle parts of the two sides of the chair body backrest 31 are provided with large through holes, the ventilating grilles 42 are additionally arranged at the positions of the large through holes, the ventilating grilles 42 are a shell and have curved surfaces all around, a row of grooves are formed in the middle parts of the ventilating grilles, the curved surfaces of the ventilating grilles 42 are attached to the outer side cambered surface of the chair body backrest 31, the effects of compressing and leveling the seat cloth cover are achieved, the attractive degree of the seat can be improved, the grooves in the middle parts can provide a ventilating function, and the comfort degree is improved.

Referring to fig. 7, when a young child sits on the car seat, the car seat needs to be used with a five-point seat belt. At this time, the webbing 37 of the five-point seat belt can be fixed by passing through the through holes 25-2 and 25-3 of the seat cushion 25 of the seat body and the through hole 31-2 of the back of the backrest 31 of the seat body. In particular, the webbing 37 that passes through the seat back 31 may be looped around the bottom of the seat and threaded out through the adjustment port 25-1 to adjust the tightness of the harness while securing the child car seat.

As shown in fig. 8, when a child of an older age sits on the seat, the child needs to be used with a three-point car seat belt. At the moment, the shoulder belt part of the automobile safety belt can penetrate through the back of the headrest 36, the waistband part of the automobile safety belt can penetrate through the guide grooves 25-4 in the rear part of the seat cushion 25 of the seat body, the guide hooks 36-2 at the lower ends of the two wings of the headrest can restrain the sliding of the shoulder belt part, and the guide grooves 25-4 can restrain the sliding of the waistband part, so that the safety is improved.

Referring to fig. 9, when a child of the youngest age sits on the seat, the seat body needs to be rotated 180 degrees and then fixed, at this time, the shoulder belt portion of the car seat belt can still pass through the back of the headrest 36, the waist belt portion of the car seat belt passes through the seat body guide groove 25-4, the seat belt bayonet 31-3 at the back of the upper portion of the seat body backrest 31 can restrict the sliding of the shoulder belt portion, and the guide groove 25-4 can restrict the sliding of the waist belt portion, thereby improving the safety.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A rotatable child car safety seat with tilt and height adjustment features comprising: the device comprises a base (2), wherein a telescopic rotary adjusting handle (1) is arranged at the front end of the base (2);

the rotating mechanism comprises an upper rotating disc (3) and a lower rotating disc (4) which are arranged on the upper side and the lower side of the base (2), and four rotating gear notches (3-1) matched with the rotating adjusting handle (1) are uniformly arranged on the circumferential part of the upper rotating disc (3);

the chair body seat cushion (25) is fixed at the upper end of the upper rotating disc (3) through a reclining adjusting mechanism, and the reclining adjusting mechanism comprises a first sliding block (21), a reclining adjusting handle (22), a reclining gear pin (23) and a chair body seat cushion support (24);

chair body back (31), chair body back (31) with chair body cushion (25) are connected, chair body back (31) department is connected with head rest (36) through head rest height control mechanism, head rest height control mechanism includes front shroud (32), head rest gear pin (33), dog (34), back of the body lid (35) and meshbelt (37).

2. A rotatable child car safety seat with recline and height adjustment features according to claim 1, wherein: the upper surface of the base (2) is provided with a bowl-shaped groove, the central part of the base (2) is provided with a first through hole, and the inner wall of the first through hole is provided with an annular check ring;

the upper rotating disc (3) and the lower rotating disc (4) are located in the first through hole and are separated by an annular retainer ring, and the upper rotating disc (3) and the lower rotating disc (4) are locked by bolts after being folded.

3. A rotatable child car safety seat with recline and height adjustment according to claim 2, wherein: a first groove is formed in the front end of the base (2), the first groove is communicated with the first through hole, and the rotary adjusting handle (1) is arranged in the first groove in a sliding mode; and ISOFIX connectors (43) are arranged on two sides of the rear end of the base (2).

4. A rotatable child car safety seat with recline and height adjustment features according to claim 1, wherein: the quantity of first slider (21) is two, and two first sliders (21) are parallel arrangement, in the first spout (3-3) on lower part embedding top spin carousel (3) surface of first slider (21), the sunken end of chair body cushion support (24) lower surface both sides is stretched into on the upper portion of first slider (21), chair body cushion (25) are locked through the bolt in chair body cushion support (24) upper end.

5. A rotatable child car safety seat with recline and height adjustment according to claim 4, wherein: two rows of inclined lying gear teeth (3-2) which are arranged in parallel are protruded on the upper rotating disc (3), the two rows of inclined lying gear teeth (3-2) are positioned at the front ends of the inner sides of the two first sliding grooves (3-3), a second sliding groove (24-1) is arranged on the side portion of the chair body cushion support (24) in a penetrating manner, a special-shaped sliding groove (22-1) is arranged on the side portion of the inclined lying adjusting handle (22) in a penetrating manner, the special-shaped sliding groove (22-1) is an L-shaped sliding groove, and an inclined lying adjusting handle (22) is arranged on the lower portion of the chair body cushion support (24) in a concave manner and extends into a third sliding groove (24-2); the reclining gear pin (23) simultaneously passes through a special-shaped chute (22-1) on the reclining adjusting handle (22) and a second chute (24-1) on the chair body cushion bracket (24) and is clamped into a tooth position on the reclining gear tooth (3-2), and check rings are additionally arranged at two ends of the reclining gear pin (23) for fixation.

6. A rotatable child car safety seat with recline and height adjustment according to claim 4, wherein: the end of the reclining adjusting handle (22) is provided with a first connecting end, the rear side of the lower part of the chair body cushion support (24) is provided with a second connecting end, and the first connecting end is connected with the second connecting end through a first spring (26).

7. A rotatable child car safety seat with recline and height adjustment features according to claim 1, wherein: a bar block (36-3) extends out of the lower portion of the headrest (36), a fifth sliding groove (31-4) for the bar block (36-3) to slide is longitudinally formed in the middle of the backrest (31) of the chair body, a row of headrest gear holes (31-1) are longitudinally formed in the middle of the fifth sliding groove (31-4), a fourth sliding groove (36-4) is formed in the tail end of the lower portion of the surface of the bar block (36-3), the stop block (34) is installed in the fourth sliding groove (36-4), one end of the mesh belt (37) is connected with the stop block (34), the other end of the mesh belt (37) penetrates through the headrest (36) and extends out of the upper portion of the headrest (36), the bar block (36-3) of the headrest (36) is slidably arranged in the fifth sliding groove (31-4) of the backrest (31) of the chair body and is limited to the bar block (36-3) through the front cover plate (32), the front cover plate (32) is fixedly connected with the chair body backrest (31).

8. A rotatable child car safety seat with recline and height adjustment according to claim 7, wherein: a square through hole is formed in the fourth sliding groove (36-4), a back cover (35) is fixed in the square through hole, a round hole for a headrest gear pin (33) to pass through is formed in the surface of the back cover (35), a second spring (39) is further arranged between the headrest gear pin (33) and the back cover (35), and the stop block (34) is arranged in the fourth sliding groove (36-4) in a sliding mode and is in contact with the headrest gear pin (33); a third spring (38) is further arranged in the fourth sliding groove (36-4), and the third spring (38) is respectively contacted with the stop block (34) and the inner wall of the top of the fourth sliding groove (36-4); the stop block (34) is provided with a special-shaped surface on one side close to the headrest gear pin (33), and the special-shaped surface is an obtuse-angle Z-shaped surface.

9. A rotatable child car safety seat with recline and height adjustment features according to claim 1, wherein: thickened cotton (36-1) is arranged on two sides of the headrest (36), positioning holes are formed in the positions, close to the upper portions, of the outer portions of two sides of the chair body backrest (31), side impact protection blocks (41) are fixed in the positioning holes, and ventilation grids (42) are arranged in the middles of two sides of the chair body backrest (31).