CN107839556B

CN107839556B - Child restraint system

Info

Publication number: CN107839556B
Application number: CN201710954020.6A
Authority: CN
Inventors: 赵国松
Original assignee: Ch Baby Co ltd
Current assignee: Ch Baby Co ltd
Priority date: 2017-10-13
Filing date: 2017-10-13
Publication date: 2024-07-23
Anticipated expiration: 2037-10-13
Also published as: CN107839556A

Abstract

The invention discloses a child restraint system, which comprises a base and a seat, wherein a turntable bracket is fixed on the base, a turntable matched with the turntable bracket is arranged at the bottom of the seat, at least three clamping claws are arranged on the turntable bracket, and each clamping claw is pressed at the edge part of the turntable at intervals to limit the turntable position; the turntable is also provided with a pitching adjusting frame, the seat is arranged on the pitching adjusting frame, a matched angle locking mechanism is further arranged between the pitching adjusting frame and the seat, and the pitching adjusting frame comprises a bottom bracket and two support plates which are vertically arranged on the bottom bracket side by side; one end of each supporting plate is provided with a first guide rod, and the other end is provided with a second guide groove along the movement path of the seat for adjusting the pitching angle; the seat is provided with a first guide groove matched with the first guide rod and a second guide rod matched with the second guide groove; the guide bars move along the corresponding guide grooves to guide the seat to adjust the pitch angle.

Description

Child restraint system

Technical Field

The invention relates to the field of children supplies, in particular to a child restraint system.

Background

The automobile child safety seat is also called a child restraint system CRS (Child Restraint System), and is a seat which is specially designed for children of different ages (or weights), is installed in an automobile and can effectively improve the riding safety of the children. The European regulations ECE R44/03 define a child safety seat as follows: a child safety protection system that can be secured to a motor vehicle, consisting of a harness assembly or flexible member with a buckle, an adjustment mechanism, an accessory, etc. Can be combined with additional devices such as portable child's bed, infant carrier, auxiliary seat or crash shield. In the event of a collision or sudden deceleration of the vehicle, the impact force on the child is slowed down and the body movement of the child is restricted to reduce injury to the child and ensure the riding safety of the child.

In many child safety seats, a child is restrained in the safety seat by a harness that is connected to the body or shell of the safety seat. The seat shell itself is typically connected to the vehicle by an automotive harness and a harness that is connected to the shell and extends toward a vehicle anchorage point to which the harness is attached by a latch hook connector.

Along with the update of the generation of products and the continuous demands of consumers on the functions of the products, china patent document with publication No. CN204020629U discloses a rotating mechanism of a child safety seat for vehicles, which comprises a disc-shaped rotating disc, wherein the rotating disc is arranged above an upper cover of a chassis of the child safety seat, and the rotating disc is arranged below a seat body of the child safety seat. The technical scheme well solves the problem of rotation of the child safety seat, but the problem of locking and stress after rotation is to be improved.

Chinese patent publication No. CN204020629U discloses a rotating mechanism of a child safety seat for a vehicle, which includes a disc-shaped rotating disc disposed above a chassis upper cover of the child safety seat, and disposed below a seat body of the child safety seat. According to the technical scheme, the problem of rotation of the child safety seat is well solved, but the sitting posture pitching of the child after rotation is still relatively fixed, and the use requirement that a user can adjust at will cannot be met.

Chinese patent publication No. CN205440044U discloses an ISOFIX connecting device of a child car seat and a child car seat, wherein the ISOFIX connecting device includes an ISOFIX connector slidably disposed on the child car seat, the ISOFIX connecting device further includes a first lock mechanism for locking the ISOFIX connector with the child car seat when the ISOFIX connector extends out of the child car seat, and a linking mechanism for unlocking the first lock mechanism when the ISOFIX connector is locked with the car seat. When the ISOFIX connecting device is used for installing the child automobile seat on the automobile seat, the position between the ISOFIX connector and the child automobile seat is in a locking state, so that the ISOFIX connector can be prevented from retracting, and the first locking mechanism can be unlocked after the ISOFIX connector is locked with the automobile seat, so that the child automobile seat can be pushed, and the child automobile seat is very convenient to install. However, according to the technical scheme, the ISOFIX connectors on two sides need to be independently operated, and the stability of unlocking actions needs to be improved.

The Chinese patent document with the publication number of CN205498677U discloses a headrest height adjusting mechanism of an infant car safety seat, which is mainly used for adjusting the height of the headrest on the infant car safety seat, and the structure of the headrest height adjusting mechanism comprises a seat, a headrest, a limiting strip, an adjusting piece, a gear component and the like, wherein the gear component comprises an adjusting seat with one end rotatably connected to the headrest and the other end arranged as a gear end, a gear shaft is arranged at the gear end of the adjusting seat, the gear shaft can be elastically clung to the headrest and is selectively matched with a plurality of gear tooth grooves on the limiting strip, and a driving inclined plane is arranged at the lower end of the adjusting piece to drive the gear shaft to be separated from the gear tooth grooves. The problem of headrest regulation can be solved to this technical scheme, but locking effect remains to be improved.

More importantly, the child restraint systems of the related art do not integrate and comb the individual components, are individually optimized, and do not provide comprehensive protection for the child.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the child restraint system with good component matching effect and greatly improved overall safety.

The technical scheme of the invention is as follows:

The child restraint system comprises a base and a seat, wherein a turntable bracket is fixed on the base, a turntable matched with the turntable bracket is arranged at the bottom of the seat, at least three clamping claws are arranged on the turntable bracket, and the clamping claws are pressed at the edge part of the turntable at intervals to limit the position of the turntable;

The turntable is also provided with a pitching adjusting frame, the seat is arranged on the pitching adjusting frame, a matched angle locking mechanism is further arranged between the pitching adjusting frame and the seat, and the pitching adjusting frame comprises a bottom bracket and two support plates which are vertically arranged on the bottom bracket side by side; one end of each supporting plate is provided with a first guide rod, and the other end is provided with a second guide groove along the movement path of the seat for adjusting the pitching angle; the seat is provided with a first guide groove matched with the first guide rod and a second guide rod matched with the second guide groove; the guide bars move along the corresponding guide grooves to guide the seat to adjust the pitch angle.

According to the invention, rotation and pitching adjustment are integrated, so that the number of parts in the constraint system can be reduced on the premise of ensuring the use effect, and the matching relationship is optimized, thereby improving the use experience and reducing the production cost.

Specifically, the seat can be displaced relative to the support plate through the cooperation of the guide rod and the guide groove, so that pitching adjustment is realized. Wherein the guide groove and the guide bar are mutually matched components, so that the first guide bar is arranged on the seat and the first guide groove is arranged on the supporting plate can be regarded as equivalent replacement of the technical scheme in the application. The second guide groove and the second guide rod are exchanged in position.

The guide rod and the guide groove are matched, so that the seat can be adjusted, guiding and limiting can be provided for the action of the seat, the safety seat cannot be loosened due to the added adjusting function, and potential safety hazards are reduced.

Where "defining a carousel position" refers to defining a carousel displacement in three dimensions, rather than limiting a carousel rotation. The rotary shaft line of the rotary table can be positioned through the three clamping jaws so as to rotate the installation rotary table, and the rotation resistance of the rotary table can be effectively reduced while the installation strength is ensured by the clamping jaws, so that easier operation experience is realized. Meanwhile, the clamping jaw is easy to produce, so that the production cost can be effectively reduced, and the product competitiveness is improved.

Further, the supporting piece is in a vertically arranged plate shape, the bottom edge of the supporting piece is provided with a folded edge, and the folded edge is attached to the base and fixed through bolts; the clamping jaw is positioned at the top edge of the supporting piece; two clamping claws on the same supporting piece are arranged in opposite directions, a clamping groove is formed between each clamping claw and the top edge of the supporting piece, and the edge of the turntable stretches into and is limited in each clamping groove; the top edge of the support piece is provided with a folding lug for supporting the bottom surface of the turntable.

The plate-shaped supporting piece in the design is easy to produce, the production cost can be effectively reduced, the yield is improved, and meanwhile, different inclinations compared with the horizontal inclination can be conveniently provided for the turntable through the clamping jaw on the top surface; the clamping groove is matched with the edge of the turntable, so that the mounting strength is ensured, the assembly difficulty is reduced, the error requirement on parts is low, and the design and production difficulty is greatly reduced. The single structure can be used on different types of products, and the adaptability is improved.

The contact area between the supporting piece and the turntable can be effectively reduced by the lug bearing turntable, so that the friction force is reduced. The abrasion of the rotary table and the supporting piece can be conveniently protected by changing the thickness, the hardness and other parameters of the folding lugs, so that the service life of the product is prolonged, and the stability is improved.

Further, the base is provided with a rotation locking mechanism which acts with the turntable, and the rotation locking mechanism comprises:

The push-pull handle is slidably arranged on the base;

a lock pin mounted on the push-pull handle;

An elastic driving piece acting between the push-pull handle and the base to drive the push-pull handle to enter the locking position;

The push-pull handle is characterized in that strip-shaped guide holes are formed in two opposite sides of the push-pull handle, and guide posts respectively extending into the guide holes are arranged on the base.

The relative position relationship between the base and the turntable is locked by the lock pin, so that the rotation locking is realized, and the operation is simple and the effect is good.

Further, the support plate has a first upturned portion extending toward the rear side of the seat, and a second upturned portion extending toward the front side of the seat; the first guide rod is positioned at the top of the first upturned part, and the second guide groove is positioned at the top of the second upturned part; the collet is an integral structure, including:

A disc part which is attached and fixed with the top surface of the turntable;

A supporting part extending upwards from the edge of the disc part and matched with the first upturned part;

And the supporting part is positioned on the disc part and is abutted against the lateral side of the second upturned part.

The front and back of the seat means that the baby faces forward and back in the normal use state of the safety seat. However, in the rotatable safety seat, a front-rear concept is a concept that specifically refers to a front-rear direction of the safety seat in a normal use state of the vehicle or the like. Therefore, the first upturned portion and the second upturned portion of the support plate are distant from each other in the seat front-rear direction in this aspect. The benefit of this design is that it provides a more stable installation. The farther the first upturned part and the second upturned part are away from the gravity center of the seat, the larger the formed equivalent supporting plane is, and correspondingly, the more stable supporting effect can be provided.

Further, the angle locking mechanism includes:

a plurality of lock holes arranged on the second upturned part along a movement path of the seat for adjusting the pitching angle;

A latch slidably mounted on the seat;

A driving handle for enabling the lock pin to enter or exit the lock hole.

The locking of the seat and the bottom bracket is realized by driving the lock pin through the driving handle, so that the locking of the seat and the supporting plate is realized, the locking strength can be effectively improved by locking the seat and the supporting plate supporting the seat, and the possibility of unexpected unlocking is avoided.

Further, sliding installation has the safety subassembly that is used for being connected with the vehicle in the base, install the location rack on the safety subassembly, be equipped with on the base with this location rack matched with slip locking mechanical system, slip locking mechanical system includes:

the locking piece is provided with a locking position clamped into the positioning rack and a unlocking position separated from the positioning rack;

the unlocking handle is arranged on the base in a sliding manner, a guide inclined hole for driving the locking rod to switch between a locking position and a unlocking position is formed in the unlocking handle, and at least one part of the locking piece extends into the guide inclined hole;

And the guide piece is positioned on the base and used for limiting the movement path of the locking rod when the locking position and the unlocking position are switched.

The locking rod is driven to move by the unlocking handle, and the guide piece provides a stable movement path for the locking rod, so that flexible adjustment of the safety assembly in the length direction can be realized. The locking rod is used for realizing synchronous locking or unlocking of a plurality of parts of the safety assembly, so that uneven stress or deflection of the safety assembly is avoided, and the safety of the safety seat is improved.

Further, the turntable support is provided with a second guide hole corresponding to the position and the extending direction of the guide piece, and the end part of the locking rod sequentially penetrates through the second guide hole and the guide piece on the corresponding side and then further extends to be matched with the positioning rack on the corresponding side.

The locking rod passes through the guide piece firstly and then is matched with the positioning rack on the corresponding side, and the stress part of the locking rod, which acts with the unlocking handle, and the driving part matched with the positioning rack can be isolated through the guide piece, so that the influence of redundant movement of the unlocking handle on the matching with the positioning rack is avoided, the locking effect of the sliding locking mechanism is improved, and the safety of the safety seat is improved.

Further, the seat is provided with a stress belt and a locking mechanism for adjusting the length of the stress belt, and the stress belt is provided with at least one anchor point for connecting the seat and the vehicle;

The locking mechanism is fixed on the seat and is provided with a force strap channel for the force strap to pass through, and the force strap channel has a closed state for shrinking and limiting the force strap to move and an opposite open state;

wherein the load-bearing force strap is capable of driving the locking mechanism to maintain the force strap path in a closed state.

The length of the stress belt extending out of the seat is limited by the stop belt component, so that the needed stress belt can be flexibly regulated in different use scenes and working conditions, and a user can conveniently install the safety seat. And the unlocking structure can conveniently complete the free movement of the stress belt, so that the complicated disassembly step after the installation is completed is avoided. For example, when a user needs to adjust the turnover condition of the vehicle inner seat, the adaptation of the safety seat can be realized without complex operation, and the operation feeling of the user is greatly improved.

Further, be equipped with on the back of seat along the headrest that the back slides and goes up and down is equipped with the high locking mechanical system of mutually supporting between back and headrest, high locking mechanical system includes:

A plurality of height locking grooves arranged in the backrest along a movement direction of the headrest;

a locking cross pin engaged with the height locking groove;

The height adjusting handle is arranged on the headrest in a sliding mode and comprises a body attached to the front side of the headrest and a driving part located at the bottom end of the body, the driving part penetrates through the headrest and extends into the backrest, a reversing inclined hole is formed in the driving part, the locking transverse pin penetrates through the reversing inclined hole, and the height adjusting handle drives the locking transverse pin to be clamped into or withdraw from the height locking groove through the reversing inclined hole under the sliding state.

The headrest can be adjusted according to the height of children in different age stages, the characteristic of high growth speed of the children is fully considered, and the adaptability of products is improved. The locking transverse pin can be driven to be clamped into or withdrawn from the height locking groove through the movement of the height adjusting handle, so that the adjustment of the headrest is realized, the structure is simple, and the operation effect is stable. The movement direction of the height adjusting handle is consistent with the adjusting direction of the headrest, so that the user has low learning cost and good operation experience.

Further, the height adjusting handle is provided with a lifting state for enabling the locking transverse pin to exit the height locking groove; and the locking transverse pin is clamped into the pressing state of the height locking groove, and an elastic driving piece for driving the height adjusting handle to be kept in the pressing state is arranged between the headrest and the height adjusting handle.

The height adjusting handle can be kept in a pressing state through the elastic driving piece, so that accidental unlocking of the height locking mechanism in the use process of the safety seat is avoided, and safety of the safety seat is improved.

Furthermore, the body of the height adjusting handle is provided with a hollowed-out area, and the bottom edge of the hollowed-out area is provided with a positioning seat; the front side of the headrest is provided with a footstock which extends to the hollowed-out area and is positioned above the positioning seat, and the elastic driving piece is a pressure spring which is propped between the footstock and the positioning seat.

The positioning seat is arranged in a hollowed-out area on the body of the height adjusting handle, so that the positioning seat and the hollowed-out area can also play a role of a guide post and a guide hole; from the viewpoint of user experience, a smoother use feeling can be obtained.

Further, dodging holes are formed in the headrest, driving portions of the height adjusting handles enter the backrest through the dodging holes, an outer cover corresponding to the dodging holes is arranged on the rear side wall of the headrest, and the driving portions are located in the outer cover.

The height adjusting handle is connected with two sides of the backrest through the avoidance holes, the component layout of the height locking mechanism can be flexibly realized, the operation part of the user is arranged near the headrest and more accords with the operation habit of the user, and the components such as the locking transverse pin are arranged outside the backrest and accord with the design requirement of the safety seat.

Further, side collision protection pieces are respectively arranged on two sides of a backrest of the seat, each side collision protection piece comprises a shell covered on the corresponding side of the backrest, and a cavity structure is arranged between the shell and the outer wall of the backrest; the shell comprises a collision part positioned on the side direction of the backrest, the edge of the collision part facing the back side of the backrest is inwards bent to form a buffer part, and a plurality of deformation absorbing holes which are distributed from top to bottom are formed in the buffer part.

Through the cavity that the casing of side collision protection spare and back formed, can provide effectual collision buffering for children to avoid the injury. The design of deformation absorbing holes can improve the energy absorption effect of the side impact protection piece, and avoid protection failure in serious collision. Compared with other design forms, the scheme of integrally mounting on the backrest of the seat body can avoid a movement mechanism, simplify the mounting form and avoid a crack which can cause secondary injury to children.

Further, the edge of the collision part facing the front side of the backrest is a first arc, the edge of the collision part facing the back side of the backrest is a second arc, and the surrounding area of the first arc and the second arc is the collision part; the outer wall of the backrest of the seat is provided with a limiting step, and the first arc abuts against the limiting step to limit; the deformation absorbing holes are horizontally arranged strip-shaped holes.

The collision part is formed by encircling the first arc and the second arc, so that the stress performance of the collision part can be effectively optimized, the deformation of the collision part during working is reduced, and stable protection is provided for the seat body. The side collision protection piece can be prevented from displacing relative to the seat body in the collision process by matching the limiting step and the collision part, so that the stress performance of the side collision protection piece is improved; and the acting force is distributed to the whole side impact protection part, so that protection failure possibly occurring in the shell of the side impact protection part under the limit condition is avoided.

The transverse direction of the strip-shaped hole is the relative horizontal direction of the safety seat in normal use. Because the external force direction of the stress is mostly from the front, the back, the left and the right of the safety seat in the use process of the safety seat, the transverse strip-shaped holes can absorb the stress to the greatest extent, and the safety performance of the safety seat is improved.

The invention has the following advantages:

(1) The rotary shaft line of the turntable can be positioned through the three clamping jaws so as to rotate the installation turntable, and the clamping jaws can effectively reduce the rotation resistance of the turntable while guaranteeing the installation strength, so that easier operation experience is realized;

(2) The clamping jaw type easy to produce is adopted, the whole structure is simple, the production cost can be effectively reduced, and the product competitiveness is improved;

(3) Through the cooperation of the guide rod and the guide groove, the seat can be adjusted and simultaneously guide and limit the action of the seat, so that the loosening of the safety seat caused by the added adjusting function is avoided, and the potential safety hazard is reduced;

(4) The integrated collet can form a frame for installing the turntable and the supporting plate, and a plurality of parts are fixedly integrated, so that the stress condition of the parts is effectively optimized, and the service life and the stability of the parts are improved;

(5) The locking of the seat and the bottom bracket is realized by driving the lock pin through the driving handle, so that the locking of the seat and the supporting plate is realized, the locking strength can be effectively improved by locking the seat and the supporting plate supporting the seat, and the possibility of unexpected unlocking is avoided;

(6) The functions and the layout of a plurality of components in the constraint system are systematically integrated, so that the safety performance can be effectively improved, and the production cost is reduced.

Drawings

FIG. 1 is a schematic diagram of a child restraint system of the present embodiment;

FIG. 2 is a schematic cross-sectional view of a child restraint system;

FIG. 3 is a schematic view of a specific structure of a support plate of the child restraint system;

FIG. 4 is an enlarged schematic view of FIG. 2 at A;

FIG. 5 is a schematic view of a specific construction of a pitch control frame of the child restraint system;

FIG. 6 is an enlarged schematic view of FIG. 5 at B;

FIG. 7 is a schematic illustration of a specific construction of a child restraint system safety assembly;

FIG. 8 is an enlarged schematic view of FIG. 7 at C;

FIG. 9 is a schematic rear view of a child restraint system;

FIG. 10 is an enlarged schematic view of FIG. 2 at D;

FIG. 11 is a schematic illustration of a specific construction of a child restraint system mounting panel;

FIG. 12 is an enlarged schematic view of FIG. 11 at E;

FIG. 13 is a schematic view of the internal structure of a headrest of the child restraint system;

FIG. 14 is an enlarged schematic view of FIG. 13 at F;

FIG. 15 is a schematic illustration of a particular configuration of a child restraint system with a cover on the back of the headrest;

FIG. 16 is an enlarged schematic view of the portion H of FIG. 15;

FIG. 17 is a schematic view of the enclosure of FIG. 15 removed;

FIG. 18 is an enlarged schematic view of FIG. 17 at G;

FIG. 19 is a schematic view of a child restraint system side impact protector;

FIG. 20 is a schematic view of a side impact protector construction;

Fig. 21 is a schematic view of an internal structure of the side impact protector.

Detailed Description

The following describes specific embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 21, a child restraint system is described one by one according to each functional block.

In terms of the rotation function, a turntable bracket 21 is fixed on the base 10 of the child restraint system, a turntable 22 matched with the turntable bracket 21 is arranged at the bottom of the seat 11, the turntable 22 is in a circular ring shape, and four claws 211, namely a first claw 2111, a second claw 2112, a third claw 2113 and a fourth claw 2114, are arranged on the turntable bracket 21. The jaws 211 are pressed against the edge 221 of the turntable 22 at intervals to define the turntable 22 position.

In this embodiment, the supporting members 212, 213 are only engaged with the turntable 22 via the claws 211, and there is no other rotating shaft engaged with the turntable 22 in the middle of the base 10.

Specifically, the claws 211 are provided on the support 212 and the support 213 arranged side by side, and provided on the support 212 are the first claws 2111, the second claws 2112; and the first claw 2111 and the second claw 2112 are arranged opposite to each other, a clamping groove is formed between the first claw 2111 and the second claw 2112 and the top edge of the support member 212, and the edge part 221 of the turntable 22 extends into and is limited in the clamping groove. Correspondingly, the third claw 2113 and the fourth claw 2114 are disposed on the supporting member 213, and another clamping groove is formed between the third claw 2113 and the fourth claw 2114 and the top edge of the supporting member 213, and the edge 221 of the turntable 22 extends into and is limited in the clamping groove. The two clamping grooves can effectively fix the turntable 22, so that the turntable 22 is in running fit. The top edges of the supporting members 212 and 213 are provided with a plurality of lugs 215 for supporting the bottom surface of the turntable 22, and in this embodiment, the lugs 215 are also provided with a plurality of lugs.

The support 212 and the support 213 are stably connected to the base 10 in addition to the turntable 22 to be stably mounted. Therefore, the supporting piece 212 and the supporting piece 213 are vertically arranged plate-shaped, and the punched plate can be selected, so that the production is convenient. The bottom edges of the support 212 and the support 213 are provided with flanges 214, and the flanges 214 are attached to the base 10 and fixed by bolts.

In order to increase the stability of the support 212 and the support 213, a stiffening connection 216 is provided between the support 212 and the support 213, the stiffening connection 216 being located at the periphery of the turntable 22 and having an arcuate edge 2161 adapted to the contour of the turntable 22 in the region adjacent to the turntable 22.

The seat 11 is stably mounted on the base 10 by the supporting members 212 and 213, and in order to prevent the optional rotation of the turntable 22 in an accident, the base 10 is provided with a rotation locking mechanism 23 which acts with the turntable 22, and the rotation locking mechanism 23 includes:

A push-pull handle 231 slidably mounted on the base 10;

a lock pin 232 mounted on the push-pull handle 231;

a resilient driving member (not shown) acting between the push-pull handle 231 and the base 10 to urge the push-pull handle 231 into a locked position;

the push-pull handle 231 is provided with bar-shaped guide holes 2311 on opposite sides thereof, and the base 10 is provided with guide posts 2312 respectively extending into the guide holes 2311.

In this embodiment, two locking pins 232 are provided, and the same sides of the two locking pins 232 are connected to each other to form a U-shaped structure, the bottom of the U-shape is fixedly installed in the push-pull handle 231, and the locking pins 232 are provided with a linear groove for fixing the bottom of the U-shape. In order to improve the fixing effect of the lock pins 232, a limiting pressing block 233 is arranged on the base 10, a limiting channel for guiding the lock pins 232 to reciprocate is arranged between the limiting pressing block and the base 10, and two corresponding lock pins 232 of the limiting pressing block 233 are arranged and are respectively and independently installed.

In this embodiment, a pitching frame 31 is fixed to the turntable 22, and the seat 11 is mounted on the pitching frame 31 with an angle adjustable. The pitch adjusting frame 31 is provided with locking grooves (not shown) which are matched with the locking pins 232 to position the rotation angle of the turntable 22, the locking grooves are concave parts corresponding to the shape of the locking pins 232, a plurality of groups of locking grooves are arranged at the position, close to the turntable 22, of the pitch adjusting frame 31, for example, four groups of locking grooves are distributed at equal intervals on the circumference and are used for limiting four directions (forward direction, reverse direction, left side direction and right side direction) commonly used by the seat 11, and correspondingly, more positions can be arranged to provide richer operations. According to the corresponding regulations, only the locking grooves in the forward direction and the backward direction, namely the front and back directions of the pitching adjusting frame 31, which are close to the turntable 22, can be completely locked, and the locking grooves in the other directions only provide a limiting function, so that the operation of a user is facilitated. And when the lock pin 232 is not positioned in the lock groove in the front-rear direction of the pitching adjusting frame 31 close to the turntable 22, a corresponding reminding mechanism is arranged to remind the user of corresponding potential safety hazards.

During the use process:

when the user needs to rotate the seat 11, the push-pull handle 231 is driven by force, the push-pull handle 231 moves back to the seat 11 against the elastic force of the elastic driving member under the guidance of the guide post 2312, and simultaneously the lock pin 232 is driven to move back to the seat 11 so as to withdraw from the locking groove, at this time, the turntable 22 can freely rotate in the directions defined by the first claw 2111, the second claw 2112, the third claw 2113 and the fourth claw 2114, when the user rotates the seat 11 to the required position, the push-pull handle 231 is released, the push-pull handle 231 moves towards the seat 11 under the guidance of the guide post 2312 by the elastic force of the elastic driving member, and meanwhile the lock pin 232 is driven to move towards the seat 11 so as to enter the locking groove, so that the locking in the rotating direction of the seat 11 is completed, and the user waits for starting again. If the locking pin 232 fails to enter the locking slot, the corresponding alert mechanism prompts the user to pay attention to the corresponding safety hazard.

In terms of the pitching adjusting function, an angle locking mechanism 32 matched with the pitching adjusting frame 31 of the child restraint system is further arranged between the pitching adjusting frame 31 and the seat 11, and the pitching adjusting frame 31 comprises a bottom bracket 311, and a supporting plate 312 and a supporting plate 313 which are vertically arranged on the bottom bracket 311 side by side; along the movement path of the seat 11 for adjusting the pitch angle, one end of the support plate 312 and the support plate 313 is provided with a first guide rod 331, and the other end is provided with a second guide groove 332; the seat 11 is provided with a first guide groove (located at the back of the seat 11 and thus not shown) that mates with the first guide bar 331, and a second guide bar 333 that mates with the second guide groove 332; the guide bars move along the corresponding guide grooves to guide the seat 11 to adjust the pitch angle.

In the specific arrangement of the guide rod and the guide groove, the first guide rod 331 is an integral rod piece, and the first guide groove 332 is two arranged on two axial sides of the first guide rod 331; the first guide bar 331 penetrates the support plate 312 and the support plate 313, and both end portions of the first guide bar 331 are respectively seated in the first guide grooves of the corresponding sides, so that the first guide bar 331 can slide along the first guide grooves.

Similarly, the second guide rods 333 are one, two ends of the second guide rods 333 are respectively fixed on the seat 11, and the middle parts of the second guide rods 333 penetrate through the second guide grooves 332 of the support plates 312 and 313. The second guide bar 333 is free to slide along the second guide groove 332.

The cooperation of the first guide lever 331 and the first guide groove, and the cooperation of the second guide lever 333 and the second guide groove 332 enable the pitch adjustment of the seat 11 with respect to the pitch adjustment frame 31.

In order to better realize the pitching action, the bottom edges of the support plate 312 and the support plate 313 are provided with folds 314 which are attached to the shoe 311, and a pressing strip 315 which is overlapped on each fold 314 and is fixed to the shoe 311 is arranged between the support plate 312 and the support plate 313. Specifically, the pressing strips 315 are two pressing strips arranged side by side and arc-shaped.

The support plate 312 and the support plate 313 are provided with respective carrying folds 316 which cooperate with the seat 11. Correspondingly, the bottom of the seat 11 is provided with a reinforcing bead (located on the back of the seat 11 and therefore not shown) against the carrying flange 316. And the carrying flaps 316 on support panel 312 and support panel 313 are folded toward each other.

In this embodiment, the child restraint system is further provided with a base 10, a turntable 22 is rotatably mounted on the base 10, and a pitching frame 31 is fixed on the top surface of the turntable 22. The turntable 22 is in a circular ring shape, the arc shape of the pressing bar 315 corresponds to the turntable, and the turntable 22 and the pressing bar 315 clamp the supporting plate 312 and the supporting plate 313 which are protected by the bottom bracket 311 up and down.

In a specific form, the shoe 311 is similar to the support plate, and has a first upturned portion 341 extending toward the rear side of the seat 11, and a second upturned portion 342 extending toward the front side of the seat 11; the first guide bar 331 is located at the top of the first upturned portion 341, and the second guide groove is located at the top of the second upturned portion 342; and the shoe 311 is an integral structure comprising:

A disk portion 3111 attached to the top surface of the turntable 22;

A support portion 3112 extending upward from an edge of the disc portion 3111 and engaged with the first upturned portion 341;

And a support 3113 located on the disc portion 3111 and abutting laterally to the second upturned portion 342.

To this end, the seat 11 has been well-suited for pitching and firmly mounting on the base 10, and the angle locking mechanism 32 includes, in order to prevent movement of the seat 11 relative to the base 10:

a plurality of locking holes 321 arranged on the second upturned portion along a movement path of the seat 11 for adjusting the pitch angle;

A latch 322 slidably mounted on the seat 11;

a driving handle 323 for moving the lock pin into or out of the lock hole.

A guide holder 324 fixed to the seat 11, a driving handle 323 slidably mounted on the guide holder 324, and a limit groove 3241 for limiting a sliding path of the driving handle 323 is provided in the guide holder 324. The guide seat 324 is provided with a limiting hole 3242, one end of the lock pin 322 penetrates through the limiting hole 3242 to be matched with the lock hole 321, and the other end of the lock pin 322 is provided with a deflector rod 325 extending along the radial direction of the lock pin 321; the driving handle 323 is provided with a driving inclined hole 3231 which is inclined with the moving path of the lock pin 322, and the deflector rod 325 extends into the driving inclined hole 3231.

In this embodiment, the left and right sides of the guide seat 324 are provided with limiting holes 3242, so that the lock pins 322 with the shifting lever 325 are provided with left and right sides, and can be respectively matched with the lock holes 321 on the support plate 312 and the support plate 313.

During the use process:

When the user needs to unlock and perform pitching adjustment, the user pulls the driving handle 323 back to the seat 11 with force, under the action of the driving inclined hole 3231, the two toggle rods 325 are driven to approach each other, so that the two lock pins 322 approach each other and withdraw from the lock holes 321 on the support plate 312 and the support plate 313, at this time, the locking of the seat 11 and the pitching adjustment frame 31 is released, under the support of the bearing flange 316 and the reinforcing raised strips, and under the guidance of the first guide rod 331 and the first guide groove, and the second guide rod 333 and the second guide groove 332, the seat 11 can perform pitching adjustment relative to the pitching adjustment frame 31, when the user adjusts to a required angle, the driving handle 323 is released, the driving handle 323 moves towards the seat 11 under the action of the elastic reset component, under the action of the driving inclined hole 3231, the two toggle rods 325 are driven to move away from each other, so that the two lock pins 322 are separated from each other and enter the lock holes 321 on the support plate 312 and the support plate 313, at this time, the locking of the seat 11 and the pitching adjustment frame 31 is waited for secondary triggering.

As for the adjusting function of the safety assembly, the safety assembly 51 for connecting with the vehicle is slidably mounted in the base 10, the safety assembly 51 is mounted with a positioning rack 52, the base 10 is provided with a sliding locking mechanism 53 matched with the positioning rack 52, and the sliding locking mechanism 53 comprises:

A locking piece 531, wherein the locking piece 531 is provided with a locking position clamped into the positioning rack 52 and a unlocking position separated from the positioning rack 52;

an unlocking handle 532 slidably mounted on the base 10, the unlocking handle 532 being provided with a guide inclined hole 533 for driving the locking lever to switch between the locking position and the unlocking position, a portion of the locking piece 531 extending into the guide inclined hole 533;

A guide 534 is located on the base 10 for defining a path of movement of the locking lever when switching positions between the locking position and the unlocking position.

In terms of the specific arrangement of the locking piece 531: the locking piece 531 is a rod-shaped locking lever and penetrates the guide inclined hole 533. The end of the locking piece 531 further extends through the guide piece 534 of the corresponding side and then is engaged with the positioning rack 52 of the corresponding side.

In this embodiment, the safety assembly 51 is an ISOFIX assembly, so the safety assembly 51 is two sets of safety assemblies arranged side by side, the locking member 531 is arranged between the two sets of safety assemblies 51 along a direction perpendicular to the moving direction of the safety assembly 51, and two ends of the locking member 531 are respectively matched with the positioning racks 52 in the corresponding side mounting assemblies.

In terms of the specific arrangement of the unlocking handle 532: the unlocking handle 532 includes a grip portion (at the bottom of the base 10 and thus not shown), a connecting portion 5321, and a driving portion 5322, which are sequentially engaged, and a guide inclined hole 533 is provided on the driving portion 5322. The guide inclined hole 533 is a bar-shaped hole, and an angle between an extending direction of the guide inclined hole 533 and a sliding direction of the unlocking handle 532 is preferably 45 degrees. And the guide inclined holes 533 are two arranged at intervals, and the locking piece 531 sequentially penetrates through each guide inclined hole 533.

A cooperating guide mechanism 535 is provided between the unlocking handle 532 and the base 10, the sliding direction of the unlocking handle 532 being parallel to the direction of movement of the safety assembly 51. Specifically, the guide mechanism 535 includes a first guide hole 5351 provided in a bar shape on the unlocking handle 532, and a guide post 5352 provided on the base 10 to extend into the first guide hole 5351.

In this embodiment, the unlocking handle 532 is long, extending from the middle of the base 10 to the front of the base 10, so that in order to provide a stable unlocking action, the guide mechanism 535 is provided with a plurality of sets of guide mechanisms 5353, for example, as shown in the figure, and guide mechanisms 5354.

In terms of the specific arrangement of the guide 534, the guide 534 is a strip-shaped guide slot, the extension direction of which is perpendicular to the movement direction of the safety component 51.

In this embodiment, a turntable bracket 21 is fixed on the base 10, a turntable 22 matched with the turntable bracket 21 is arranged at the bottom of the seat 11, a pitching adjusting frame 31 is fixed on the turntable 22, and the seat 11 is installed on the pitching adjusting frame 31 in an angle-adjustable manner. The turntable support 21 is provided with a second guide hole 211 corresponding to the position and the extending direction of the guide member 534, and the end portion of the locking member 531 sequentially passes through the second guide hole 211 and the guide member 534 on the corresponding side and then further extends to be matched with the positioning rack 52 on the corresponding side.

In terms of the specific arrangement of the positioning rack 52:

the positioning rack 52 is uniformly provided with a plurality of helical teeth, one side tooth surface of each helical tooth is a working surface 521 which is mutually clamped with the locking piece 531 at the locking position, and the other side tooth surface is a reset surface 522 which pushes the locking piece 531 to enter the unlocking position when the safety component 51 is reset. And the reset surface 522 is parallel to the extending direction of the guide inclined hole 533.

During the use process of the user:

When a user needs to push the safety assembly 51 inwards, only a part of the safety assembly 51 exposed out of the base 10 needs to be inferred, the movement of the safety assembly 51 drives the positioning rack 52 to move inwards, so that the reset surface 522 of the positioning rack 52 abuts against the locking piece 531, and the locking piece 531 moves upwards under the limit of the guide piece 534, so that the retraction of the safety assembly 51 is realized.

When the user needs to extend the length of the safety assembly 51, a pulling force needs to be applied to the holding portion of the unlocking handle 532, at this time, the unlocking handle 532 moves towards the outer side of the base 10, and the locking piece 531 moves upwards under the driving of the guiding inclined hole 533 and the limit of the guiding piece 534, so that the user is separated from the working surface 521 of the positioning rack 52, the unlocking of the safety assembly 51 is achieved, and the safety assembly 51 can freely adjust the length. When the user adjusts to the desired length, the unlock handle 532 is released. The unlocking handle 532 moves to the inner side of the base 10 under the action of a reset elastic piece (not shown), the locking piece 531 moves downwards under the drive of the guide inclined hole 533 and the limit of the guide piece 534, so as to engage the working surface 521 of the positioning rack 52, lock the safety assembly 51, and the sliding locking mechanism 53 completes a working process and waits to be triggered again.

As regards the adjustment function of the force strap, the components of the child restraint system mainly concern the force strap 12 for connecting the seat 11 to an anchor point (not shown, i.e. a fixed point on a vehicle or the like) and a locking mechanism 13 for adjusting the length of the force strap 12, the locking mechanism 13 comprising:

a bracket 131 fixed to the seat 11;

A stop band member 132 movably mounted on the bracket 131 for limiting movement of the force-bearing band 12;

an unlocking mechanism 14 mounted on the seat 11 or bracket 131 and cooperating with the stop band member 132 for driving the stop band member 132 to release the restriction of the force-bearing zone 12.

The specific locking mechanism 13 is configured such that the bracket 131 is U-shaped in the vertical direction in fig. 1, the U-shaped opening is used for installing the stop band element 132, and a channel 133 through which the force strap 12 passes is provided between the stop band element 132 and the bottom end of the U-shape. The stop band element 132 has a spatial axis of rotation, which in this embodiment is defined by the rotation axis 135. And the outer circumferential surface of the stop band 132 has a force-strap locking portion 1321 protruding toward the bottom end of the U shape and a force-strap releasing portion 1322 relatively far from the bottom end of the U shape, so that the force-strap locking portion 1321 can reduce the cross-sectional area of the channel 133 and the force-strap releasing portion 1322 can increase the cross-sectional area of the channel 133. Accordingly, the force strap locking portion 1321 is provided with friction teeth (not shown) that interact with the force strap 12.

The stop band member 132 has a locked state against the force strap 12 in the channel 133 and a unlocked state releasing the force strap 12 in the channel 133, corresponding to the size of the cross-sectional area of the channel 133.

In this embodiment, the bracket 131 is preformed integrally with the stop band member 132, and the bracket 131 is further provided with screw holes 134 for mounting with the seat 11. In other embodiments, bracket 131 may double as seat 11, i.e., by directly mounting stop band member 132 to seat 11, and channel 133 is formed by the surrounding of stop band member 132 and seat 11.

In order to enhance the locking effect of the locking mechanism 13, the locking mechanism 13 further includes a first elastic member (not shown) for maintaining the stop band member 132 in a locked state, the first elastic member being a coil spring wound between the bracket 131 and the stop band member 132, the coil spring being selectively wound on the rotation shaft 135. The stop band element 132 remains in the locked state.

The locking mechanism 13 is positioned on the rear side of the backrest 110 of the seat 11 near the top of the backrest 110, i.e., above in fig. 1. And the unlocking mechanism 14 and the locking mechanism 13 are provided at the same position.

The unlocking mechanism 14 specifically includes:

a driving member, i.e., a button 141 slidably mounted on the seat 11, movably mounted on the seat 11 and adapted to drive the stop band member 132 into a release state;

The second elastic member, i.e. the coil spring 142 sleeved on the positioning rod 1411, is used for separating the driving member from the stop band member 132 to reset the button 141.

Specifically, the button 141 is provided with a positioning rod 1411 and a trigger tongue 1412, and the second elastic member is that the trigger tongue 1412 is abutted against the stop band member 132. Accordingly, the stop band element 132 is provided with a trigger stem 1323 that radially protrudes outwardly from itself and mates with the trigger tongue 1412.

The top of the backrest 110 of the seat 11 is provided with a mounting plate 111, the mounting plate 111 is fixed at the top of the backrest 110 of the seat 11 through two unfolded wings, the middle part of the mounting plate 111 is hollowed out to form a mounting chamber 15, a bracket 131 and a stop band part 132 in the locking mechanism 13 are positioned in the mounting chamber 15, the unlocking mechanism 14 is positioned outside the mounting chamber 15, and a part of the unlocking mechanism extends into the mounting chamber 15 to be matched with the stop band part 132. A part of the top wall 151 of the installation chamber 15 is a detachable structure, and the unlocking mechanism 14 is installed on the top wall 151. The top wall 151 is 7-shaped for enclosing the seat 11 to form the mounting chamber 15.

In this embodiment, the positioning rod 1411 of the button 141 is slidably inserted into a cross rod on the top wall 151, and two corresponding coil springs 142 are respectively disposed on the left and right sides of the button 141, and the trigger tongue 1412 is a rectangular long plate with a rectangular cross section, which is provided for the purpose of increasing the contact area with the trigger handle 1323 and improving the stability of the trigger action. The coil spring 142 is wound around the cross bar and abuts against the button 141 and the top wall 151 at both ends, respectively. The push button 141 is further provided with a stopper 1413 to be engaged with the top wall 151, to prevent the push button 141 from being pushed out of the top wall 151 by the coil spring 142.

The side wall 152 of the mounting chamber 15 facing away from the top wall 151, i.e. on the mounting plate 111, is provided with an inlet 1521 and an outlet 1522 for the force strap 12 to pass through, corresponding to the position of the channel 133. The back 110 is also provided at the rear side thereof with a decorative plate 16 covered outside the installation chamber 15, and the decorative plate is provided with a guide opening 161 corresponding to the positions of the tape inlet 1521 and the tape outlet 1522. The inlet 1521 and the outlet 1522 are only a relative concept, for example, the inlet when the working length of the force-bearing belt 12 is adjusted to be longer is the outlet when the working length of the force-bearing belt 12 is adjusted to be shorter.

Different parts of the force-bearing belt 12 pass through the channel 133, and after passing through the channel 133, the length of the force-bearing belt 12 is locked to become a working length, and the length which does not pass through the channel 133 is a standby length, so that the working length of the force-bearing belt 12 can be changed according to the fact that the force-bearing belt 12 passes through the channel 133.

During use;

When the user needs to adjust the working length of the force-bearing belt 12, the button 141 is pressed forcefully, and the button 141 overcomes the elastic force of the spiral spring 142 under the guidance of the positioning rod 1411 and moves into the installation chamber 15; during movement, the trigger tongue 1412 presses against the trigger lever 1323 and drives the stop band member 132 to rotate around the rotation shaft 135 in a counterclockwise direction in the drawing, the stop band member 132 rotates against the elastic force of the first elastic member, at this time, the force-bearing band locking portion 1321 of the stop band member 132 moves away from the bracket 131 in the counterclockwise direction in the drawing, the force-bearing band releasing portion 1322 moves closer to the bracket 131 in the counterclockwise direction in the drawing, the cross-sectional area of the channel 133 increases, the force-bearing band 12 can move freely, and the user can conveniently adjust.

When the adjustment is completed, the user releases the button 141. The button 141 moves away from the mounting chamber 15 under the elastic force of the coil spring 142 and the guide of the positioning rod 1411, the trigger tongue 1412 no longer applies pressure to the trigger lever 1323, the stop band 132 is driven by the elastic force of the first elastic member to rotate clockwise in the drawing, at this time, the force-receiving band locking portion 1321 of the stop band 132 approaches the bracket 131 clockwise in the drawing, the force-receiving band releasing portion 1322 moves away from the bracket 131 clockwise in the drawing, the cross-sectional area of the channel 133 is reduced, and the force-receiving band 12 is locked.

At this time, if the child restraint system is subjected to an external force, the force strap 12 is loaded, so that the force strap 12 tends to move rightward in the drawing, so that the force strap locking portion 1321 of the stop strap member 132 is subjected to a frictional force in a downward direction in the drawing, so that the stop strap member 132 is always kept in a locked state, improving the safety performance of the stroller until the push button 141 is triggered again.

In terms of the headrest height adjusting function, the headrest 61 of the child restraint system is slidably lifted along the backrest 110, and a height locking mechanism 62 is provided between the backrest 110 and the headrest 61, the height locking mechanism 62 including:

a plurality of height locking grooves 621 arranged in the backrest 110 in the direction of movement of the headrest 61;

A locking cross pin 622 engaged with the height locking groove 621;

a height adjustment handle 623 slidably mounted on the headrest 61, the height adjustment handle 623 comprising a body 6231 fitted to the front side of the headrest 61, and a driving portion 6232 located at the bottom end of the body 6231, the driving portion extending through the headrest 61 and into the backrest 110, a reversing inclined hole 6233 being provided in the driving portion 6232, a locking cross pin 622 extending through the reversing inclined hole 6233, the height adjustment handle 623 driving the locking cross pin 622 to be caught or withdrawn into the height locking groove 621 through the reversing inclined hole 6233 in a sliding state.

In a specific form of the height adjustment handle 623, the height adjustment handle 623 is elongated, a guide hole 6234 extending in the direction of movement of the body 6231 of the height adjustment handle 623 is provided, and a guide post 611 moving along the guide hole 6234 is provided on the front side of the headrest 61. The body of the height adjusting handle 623 is provided with a hollowed-out area 6235, and the bottom edge of the hollowed-out area 6235 is provided with a positioning seat 6236; the front side of the headrest 61 is provided with a top seat 612 extending to the hollow area 6235 and located above the positioning seat 6236, and the elastic driving member (not shown) is a compression spring that is pressed between the top seat 612 and the positioning seat 6236. In this embodiment, the positioning seat 6236 is a cross boss, and the compression spring is wound on the cross boss to prevent displacement; the top seat 612 is a square bump with shape matching with the hollowed-out area 6235, and the top seat 612 is matched with the hollowed-out area 6235 to supplement the guiding function of the guiding hole 6234 and the guiding column 611.

On the mounting of the height adjustment handle 623, a pillow 615 is attached and fixed to the front side of the headrest 61, and the body of the height adjustment handle 623 is located between the headrest 61 and the pillow 615. The headrest 61 is provided with a relief hole 613, a driving portion of the height adjustment handle 623 enters the backrest 110 through the relief hole, a housing 614 corresponding to the position of the relief hole 613 is provided on the rear side wall of the headrest 61, and the driving portion 6232 is located in the housing 614. The two opposite side walls of the outer housing 614 are provided with bar holes 6141 for limiting the movement path of the locking transverse pin 622 to be blocked into or withdrawn from the height locking groove 621, and two ends of the locking transverse pin 622 respectively penetrate through the bar holes 6141 on the corresponding side from the reversing inclined hole 6233 and extend into the corresponding side and the height locking groove 621. In the present embodiment, the extending direction of the bar hole 6141 is perpendicular to the moving direction of the height adjustment handle 623. In other embodiments, the direction of extension of the slot 6141 is different from the direction of movement of the height adjustment handle 623.

In operation of the height adjustment handle 623, a flexible cable 6237 is connected to the top of the body of the height adjustment handle 623, and the other end of the flexible cable 6237 extends to the outside of the region where the headrest 61 is clamped with the pillow 615 and is provided with a pull ring 6238. By pulling the pull ring 6238, the height adjustment handle 623 can be brought into a lifted state in which the lock cross pin 622 is withdrawn from the height lock groove 621; the release tab 6238, by the elastic force of the elastic driving member, the height adjustment grip 623 can be brought into a depressed state in which the lock cross pin 622 is caught in the height locking groove 621.

In the arrangement of the height locking groove 621, two racks 1101 are installed side by side in the backrest 110 to provide the height locking groove 621, and a limit stop 1102 protruding in the tooth height direction is provided at an end of each rack 1101.

During the use process:

When the user needs to adjust the height of the headrest 61, only the pull ring 6238 is required to be pulled, the pull ring 6238 can pull the height adjusting handle 623 through the flexible pull cable 6237, and the height adjusting handle 623 moves upwards on the movement path formed by the top seat 612, the hollowed-out area 6235, the guide hole 6234 and the guide post 611; the driving part 6232 of the height adjusting handle 623 applies pushing force to the locking cross pin 622 through the reversing inclined hole 6233 during upward movement, and the locking cross pin 622 is far away from the backrest 110 under the guidance of the bar hole 6141, so that both ends are separated from the height locking groove 621 to realize unlocking, and at this time, the user can freely adjust the height of the headrest 61.

When the user releases the pull tab 6238 after adjusting in place, the height adjustment handle 623 receives the elastic force of the elastic driving member, thus moving downward on the top seat 612 as a movement path formed with the hollowed-out area 6235, the guide hole 6234 and the guide post 611; the driving part 6232 of the height adjusting handle 623 applies a pulling force to the locking cross pin 622 through the reversing inclined hole 6233 in the downward movement process, and the locking cross pin 622 approaches the backrest 110 under the guidance of the strip hole 6141, so that the two ends are clamped into the height locking groove 621 to realize locking, and the height locking mechanism 62 completes once complete locking and unlocking and waits to be triggered again.

In terms of side impact protection, the child restraint system is provided with side impact protection members 41 on both sides of the backrest 110 of the seat 11, respectively, the side impact protection members 41 include a housing 410 covered on the corresponding side of the backrest 110, and a cavity structure is formed between the housing 410 and the outer wall of the backrest 110; the housing 410 includes a collision part 411 located at the side of the backrest 110, the collision part 411 is bent inwards towards the edge of the back side of the backrest 110 to form a buffer part 412, and a plurality of deformation absorbing holes 413 are arranged on the buffer part 412 from top to bottom.

In terms of the specific form of the case 410 of the side impact protector 41:

The edge of the collision part 411 facing the front side of the backrest 110 is a first arc 4111, the edge of the collision part 411 facing the rear side of the backrest 110 is a second arc 4112, and the surrounding area of the first arc 4111 and the second arc 4112 is the collision part 411. In the present embodiment, the second arc 4112 also serves as an interface between the collision portion 411 and the buffer portion 412. The first arc 4111 and the second arc 4112 enclose to form the collision portion 411, and thus the collision portion 411 is formed in a shape of small both ends and large middle in the height direction of the seat 11. As shown in fig. 1, the backrest 110 of the seat 11 has an arc shape, and the thickness of the cavity structure between the housing 410 and the outer wall of the backrest 110 gradually increases in the front-to-rear direction of the seat 11 in order to conform to the arc shape of the backrest 110 of the seat 11. The width of the buffer portion 412 gradually increases from top to bottom, and gradually decreases after reaching the middle of the height direction of the buffer portion 412. Therefore, the side of the collision part 411 facing the seat 11 can be kept relatively vertical, and in order to improve the stress performance of the collision part 411, the collision part 411 is provided with a reinforcing rib 4113 which is higher or lower than the surface of the collision part 411.

In terms of the specific form of the deformation absorbing holes 413 of the side impact protector 41:

The deformation absorbing holes 413 are horizontally arranged strip-shaped holes. The transverse direction is a relatively horizontal direction in fig. 1, and the inner edge of the deformation absorbing holes 413 has a smooth edge. The deformation absorbing hole 413 extends to the collision portion 411 beyond the boundary position of the collision portion 411 and the buffer portion 412 near one end of the collision portion 411. In a specific parameter, the length of the strain absorbing hole 413 is about 80% of the width of the buffer portion 412. Since the width of the buffer portion 412 varies with the height direction of the seat 11, the length of the deformation absorbing holes 413 also varies with the height direction of the seat 11. The width of the deformation absorbing holes 413 is preferably 8mm.

In terms of the mounting details of the side impact protector 41:

The outer wall of the backrest 110 of the seat 11 is provided with a limit step 1101, and the edge of the collision part 411 facing the front side of the backrest 110 abuts against the limit step 1101 to limit. An inner wall of the collision part 411 is provided with an inner screw housing 4114, and is fixed to the backrest 110 of the seat 11 by a screw engaged with the inner screw housing 4114. A reinforcing rib 4115 is provided between the inner wall of the collision portion 411 and the outer wall of the female screw housing 4114. Each of the internally threaded sleeves 4114 is provided with a plurality of reinforcing ribs 4115.

It should be noted that the functional components of the child restraint system of the present invention are not simply stacked, but rather interact in an interrelated manner, thereby providing an essential improvement in child safety, and a synergistic combination of the functions. For example, the swivel function and the pitch adjustment function can greatly increase the degree of freedom in adjustment of the seat; for another example, the height adjustment of the headrest can affect the overall gravity center of the restraint system, and the design of the stress belt can effectively overcome the protection effect of the restraint system after the gravity center is raised. Similar synergy is numerous, and one skilled in the art can readily understand the various combinations and synergistic effects of the present invention. Accordingly, the foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the invention, as various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The child restraint system comprises a base and a seat, wherein a turntable support is fixed on the base, a turntable matched with the turntable support is arranged at the bottom of the seat, the child restraint system is characterized in that the turntable support comprises two supporting pieces, each supporting piece is in a vertically-arranged plate shape and is provided with two clamping claws, each clamping claw is pressed at the edge of the turntable at intervals to limit the position of the turntable, the clamping claws are positioned at the top edge of the supporting piece, the two clamping claws on the same supporting piece are oppositely arranged, clamping grooves are formed between each clamping claw and the top edge of the supporting piece, the edge of the turntable stretches into and is limited in each clamping groove, a hem is arranged at the bottom edge of the supporting piece, and the hem is matched with the base and is fixed through bolts; the top edge of the supporting piece is provided with a folding lug for supporting the bottom surface of the turntable;

The turntable is also provided with a pitching adjusting frame, the seat is arranged on the pitching adjusting frame, a matched angle locking mechanism is further arranged between the pitching adjusting frame and the seat, and the pitching adjusting frame comprises a bottom bracket and two support plates which are vertically arranged on the bottom bracket side by side; one end of each supporting plate is provided with a first guide rod, and the other end is provided with a second guide groove along the movement path of the seat for adjusting the pitching angle; the seat is provided with a first guide groove matched with the first guide rod and a second guide rod matched with the second guide groove; the guide rods move along the corresponding guide grooves to guide the seat to adjust the pitching angle;

the seat is provided with a stress belt and a locking mechanism for adjusting the length of the stress belt, and the stress belt is provided with at least one anchor point for connecting the seat and a vehicle;

2. A child restraint system according to claim 1, wherein the base is provided with a rotational locking mechanism for interaction with the turntable, the rotational locking mechanism comprising:

The push-pull handle is slidably arranged on the base;

a lock pin mounted on the push-pull handle;

3. A child restraint system as claimed in claim 1, wherein the support plate has a first upturned portion extending toward the rear of the seat and a second upturned portion extending toward the front of the seat; the first guide rod is positioned at the top of the first upturned part, and the second guide groove is positioned at the top of the second upturned part; the collet is an integral structure, including:

A disc part which is attached and fixed with the top surface of the turntable;

4. A child restraint system according to claim 3, wherein the angle locking mechanism comprises:

A latch slidably mounted on the seat;

A driving handle for enabling the lock pin to enter or exit the lock hole.

5. A child restraint system according to claim 1, wherein a safety assembly for connection to a vehicle is slidably mounted in the base, the safety assembly having a positioning rack mounted thereon, the base having a slide lock mechanism for engagement with the positioning rack, the slide lock mechanism comprising:

6. A child restraint system according to claim 5, wherein the turntable support is provided with second guide holes corresponding to the positions and extending directions of the guide members, and the end portions of the locking bars sequentially pass through the second guide holes and the guide members on the corresponding sides and then further extend to be matched with the positioning racks on the corresponding sides.

7. A child restraint system according to claim 1, wherein the seat back is provided with a headrest slidably movable up and down along the back, and wherein a cooperating height lock mechanism is provided between the back and the headrest, the height lock mechanism comprising:

a locking cross pin engaged with the height locking groove;

8. A child restraint system according to claim 7, wherein the height adjustment handle has a raised condition for withdrawing the locking cross pin from the height locking slot; and the locking transverse pin is clamped into the pressing state of the height locking groove, and an elastic driving piece for driving the height adjusting handle to be kept in the pressing state is arranged between the headrest and the height adjusting handle.

9. The child restraint system of claim 8, wherein the body of the height adjustment handle has a hollowed-out area, and a positioning seat is provided at a bottom edge of the hollowed-out area; the front side of the headrest is provided with a footstock which extends to the hollowed-out area and is positioned above the positioning seat, and the elastic driving piece is a pressure spring which is propped between the footstock and the positioning seat.

10. A child restraint system according to claim 9, wherein the headrest is provided with an avoidance hole through which the driving portion of the height adjustment handle enters the backrest, the rear side wall of the headrest is provided with a housing corresponding to the avoidance hole, and the driving portion is located in the housing.

11. The child restraint system of claim 1, wherein side impact protectors are provided on each side of the backrest of the seat, the side impact protectors comprising a housing covering a corresponding side of the backrest, a cavity structure being provided between the housing and an outer wall of the backrest; the shell comprises a collision part positioned on the side direction of the backrest, the edge of the collision part facing the back side of the backrest is inwards bent to form a buffer part, and a plurality of deformation absorbing holes which are distributed from top to bottom are formed in the buffer part.

12. The child restraint system of claim 11, wherein the edge of the strike toward the front of the backrest is a first arc, the edge of the strike toward the back is a second arc, and the area enclosed by the first and second arcs is the strike; the outer wall of the backrest of the seat is provided with a limiting step, and the first arc abuts against the limiting step to limit; the deformation absorbing holes are horizontally arranged strip-shaped holes.