CN107839556B - A child restraint system - Google Patents

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

A child restraint system

Technical Field

The present invention relates to the field of children's products, in particular to a child restraint system.

Background technique

A child safety seat in a car, also known as a child restraint system (CRS), is a seat designed for children of different ages (or weights), installed in a car, and can effectively improve the safety of children riding in a car. European regulations ECE R44/03 define a child safety seat as: a child safety protection system that can be fixed to a motor vehicle and consists of a seat belt assembly with a buckle or flexible components, an adjustment mechanism, accessories, etc. It can be combined with additional devices such as a portable crib, an infant carrier, an auxiliary seat, or a collision protection device. In the event of a collision or sudden deceleration of the car, the impact force on the child is reduced and the movement of the child's body is restricted to reduce the harm to them and ensure the safety of the child riding in the car.

In many child safety seats, the child is restrained in the safety seat by a harness connected to the body or shell of the safety seat. The seat shell itself is typically connected to the vehicle by a vehicle seat belt and a tether that is connected to the shell and extends to a vehicle anchor point, where the tether is attached to the vehicle anchor point by a carabiner connector.

With the successive updates of products and the continuous requirements of consumers for product functions, a Chinese patent document with publication number CN204020629U discloses a rotating mechanism for a child safety seat for a vehicle, including a disc-shaped rotating disk, which is arranged above the upper cover of the chassis of the child safety seat and below the seat body of the child safety seat. This technical solution solves the problem of rotation of the child safety seat well, but the locking and force problems after rotation need to be improved.

The Chinese patent document with publication number CN204020629U discloses a rotating mechanism for a child safety seat for a vehicle, which includes a disc-shaped rotating disk, which is arranged above the upper cover of the chassis of the child safety seat, and the rotating disk is arranged below the seat body of the child safety seat. This technical solution solves the problem of rotating the child safety seat well, but the pitch of the child's sitting posture is still relatively fixed after the rotation, which cannot meet the user's demand for free adjustment.

The Chinese patent document with publication number CN205440044U discloses an ISOFIX connection device for a child car seat and a child car seat, wherein the ISOFIX connection device includes an ISOFIX connector, the ISOFIX connector can be slidably arranged on the child car seat, and the ISOFIX connection device also includes a first locking mechanism that locks the ISOFIX connector with the child car seat when the ISOFIX connector extends out of the child car seat, and a linkage mechanism that drives the first locking mechanism to unlock when the ISOFIX connector is locked with the car seat. When the ISOFIX connection device is installed on the car seat, the position between the ISOFIX connector and the child car seat is in a locked state, which can prevent the ISOFIX connector from retracting, and the first locking mechanism can be unlocked after the ISOFIX connector is locked with the car seat, so that the child car seat can be pushed, making the installation of the child car seat very convenient. However, the ISOFIX connectors on both sides of the technical solution need to be operated independently, and the stability of the unlocking action needs to be improved.

The Chinese patent document with publication number CN205498677U discloses a headrest height adjustment mechanism for a baby car safety seat, which is mainly used for adjusting the height of the headrest on the baby car safety seat. Its structure includes a seat, a headrest, a limit strip, an adjustment member and a gear assembly, etc. The gear assembly includes an adjustment seat with one end rotatably connected to the headrest and the other end set as the gear end. The gear end of the adjustment seat is provided with a gear shaft, which can elastically cling to the headrest and form a selective fit with multiple gear teeth on the limit strip, and then a driving inclined surface is provided at the lower end of the adjustment member to drive the gear shaft to disengage from the gear teeth. This technical solution can solve the problem of headrest adjustment, but the locking effect needs to be improved.

More importantly, the child restraint system in the relevant technology does not integrate and sort out the various components, but optimizes them individually, and cannot provide comprehensive protection for children.

Summary of the invention

In view of the deficiencies in the prior art, the present invention provides a child restraint system with good component matching effect and greatly improved overall safety.

The technical solution of the present invention is:

A child restraint system comprises a base and a seat, wherein a turntable bracket is fixed on the base, a turntable matching with the turntable bracket is provided at the bottom of the seat, and at least three claws are provided on the turntable bracket, and each claw is pressed against an edge of the turntable at intervals to limit the position of the turntable;

The turntable is also provided with a pitch adjustment frame, the seat is mounted on the pitch adjustment frame, and a matching angle locking mechanism is provided between the pitch adjustment frame and the seat, the pitch adjustment frame includes a base and two support plates standing side by side on the base; along the movement path for adjusting the pitch angle of the seat, one end of the two support plates is provided with a first guide rod, and the other end is provided with a second guide groove; the seat is provided with a first guide groove matching with the first guide rod, and a second guide rod matching with the second guide groove; the guide rods move along the corresponding guide grooves to guide the seat to adjust the pitch angle.

By integrating rotation and pitch adjustment, the present invention can reduce the number of components in the restraint system while ensuring the use effect, optimize the matching relationship, thereby improving the use experience and reducing production costs.

Specifically, the seat can be displaced relative to the support plate by the cooperation of the guide rod and the guide groove, thereby achieving pitch adjustment. The guide groove and the guide rod are mutually cooperating components, so the first guide rod is arranged on the seat and the first guide groove is arranged on the support plate, which can be regarded as an equivalent replacement of the technical solution in the present application. The second guide groove and the second guide rod are interchangeable in the same way.

The advantage of the cooperation between the guide rod and the guide groove is that the seat can be adjusted while providing guidance and limitation for the seat's movement, so that the safety seat will not become loose due to the added adjustment function, thus reducing safety hazards.

The "limited turntable position" here refers to limiting the displacement of the turntable in three-dimensional space, rather than limiting the rotation of the turntable. The three claws can locate the rotation axis of the turntable so that the turntable can be installed in rotation. The form of the claws can effectively reduce the rotation resistance of the turntable while ensuring the installation strength, thereby achieving an easier operating experience. At the same time, the claws are easy to produce, which can effectively reduce production costs and improve product competitiveness.

Furthermore, the support member is in the shape of an upright plate, and the bottom edge of the support member has a folded edge, which is in contact with the base and fixed by bolts; the claw is located at the top edge of the support member; the two claws on the same support member are arranged facing each other, and a slot is formed between each claw and the top edge of the support member, and the edge of the turntable extends into and is confined in each slot; the top edge of the support member is provided with a folded ear that supports the bottom surface of the turntable.

The plate-shaped support in this design is easy to produce, which can effectively reduce production costs and increase production. At the same time, the claws on the top surface can easily provide the turntable with different slopes compared to the horizontal inclination; the grooves and the edge of the turntable can ensure the installation strength while reducing the difficulty of assembly. The error requirements for parts are low, thus greatly reducing the difficulty of design and production. The single structure can be used on different types of products, which improves adaptability.

By supporting the turntable with the folding ears, the contact area between the support and the turntable can be effectively reduced, thereby reducing friction. By changing the thickness, hardness and other parameters of the folding ears, the wear of the turntable and the support can be easily protected, thereby extending the product life and improving stability.

Furthermore, the base is provided with a rotation locking mechanism interacting with the turntable, and the rotation locking mechanism comprises:

Push-pull handle that slides onto the base;

A locking pin mounted on the push-pull handle;

An elastic driving member acting between the push-pull handle and the base to drive the push-pull handle into a locking position;

The push-pull handle is provided with strip-shaped guide holes on opposite sides, and the base is provided with guide columns which extend into the guide holes respectively.

The relative position relationship between the base and the turntable is locked by a locking pin, thereby achieving rotation locking, which is simple to operate and has a good effect.

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 located at the top of the first upturned portion, and the second guide groove is located at the top of the second upturned portion; the bottom bracket is an integrated structure, including:

A disc portion that fits and is fixed to the top surface of the turntable;

A supporting portion extending upward from the edge of the disc portion and cooperating with the first upwardly tilted portion;

A supporting portion is located on the disc portion and is adjacent to the side of the second upwardly curved portion.

The front and back of the seat refers to the front direction when the baby is facing and the back direction when the safety seat is in normal use. However, in a rotatable safety seat, front and back is a relative concept, specifically referring to the front and back direction of the safety seat when it is in normal use in a vehicle such as a car. Therefore, in the present solution, the first upturned portion and the second upturned portion of the support plate are away from each other in the front and back direction of the seat. The advantage of this design is that it can provide a more stable installation effect. The farther the first upturned portion and the second upturned portion are from the center of gravity of the seat, the larger the equivalent support plane formed, and accordingly, a more stable support effect can be provided.

Furthermore, the angle locking mechanism comprises:

A plurality of locking holes arranged on the second upturned portion along a motion path for adjusting the pitch angle of the seat;

Slide the locking pin mounted on the seat;

Actuating handle that moves the locking pin into or out of the lock hole.

The seat and the base are locked by driving the locking pin through the driving handle, thereby locking the seat and the support plate. Locking the seat and the support plate supporting it can effectively improve the locking strength and avoid the possibility of accidental unlocking.

Furthermore, a safety component for connecting to a vehicle is slidably installed in the base, a positioning rack is installed on the safety component, and a sliding locking mechanism matching the positioning rack is provided on the base, and the sliding locking mechanism includes:

A locking member, the locking member having a locking position for engaging with the positioning rack and a releasing position for disengaging from the positioning rack;

An unlocking handle is slidably mounted on the base, and a guiding inclined hole is provided on the unlocking handle for driving the locking rod to switch between the locking position and the unlocking position, and at least a part of the locking member extends into the guiding inclined hole;

The guide member is located on the base and is used to limit the movement path of the locking rod when switching between the locking position and the unlocking position.

The unlocking handle drives the locking rod to move, and the guide member provides a stable movement path for the locking rod, so that the safety component can be flexibly adjusted in the length direction. The locking rod can be used to lock or unlock multiple parts of the safety component synchronously, avoiding uneven force or deviation of the safety component, and improving the safety of the safety seat.

Furthermore, a second guide hole corresponding to the position and extension direction of the guide member is provided on the turntable bracket, and the end of the locking rod passes through the second guide hole and the guide member on the corresponding side in sequence and then further extends to cooperate with the positioning rack on the corresponding side.

The design that the locking rod first passes through the guide part and then cooperates with the positioning rack on the corresponding side can isolate the force-bearing part of the locking rod that acts on the unlocking handle and the driving part that cooperates with the positioning rack through the guide part, thereby avoiding the unnecessary movement of the unlocking handle affecting the cooperation with the positioning rack, thereby improving the locking effect of the sliding locking mechanism and improving the safety of the safety seat.

Furthermore, the seat is provided with a force belt and a locking mechanism for adjusting the length of the force belt, and the force 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 belt channel for the force belt to pass through, and the force belt channel has a closed state that shrinks and restricts the movement of the force belt and a relatively open state;

The load-bearing belt can drive the locking mechanism to keep the load-bearing belt channel in a closed state.

The length of the force belt extending out of the seat is limited by the stop belt component, so that the required force belt can be flexibly adjusted in different usage scenarios and working conditions, which is convenient for users to install the safety seat. In addition, the unlocking structure can easily complete the free movement of the force belt, avoiding the tedious disassembly steps after installation. For example, when the user needs to adjust the folding of the seat in the vehicle, the safety seat can be adapted without complicated operations, which greatly improves the user's operating experience.

Furthermore, a headrest that slides and rises along the backrest is provided on the backrest of the seat, and a height locking mechanism that cooperates with each other is provided between the backrest and the headrest, and the height locking mechanism includes:

Multiple height locking slots arranged in the backrest along the direction of movement of the headrest;

A locking transverse pin matched with the height locking groove;

A height adjustment handle is slidably mounted on the headrest, and the height adjustment handle includes a main body attached to the front side of the headrest, and a driving part located at the bottom end of the main body, the driving part passes through the headrest and extends into the backrest, a reversing inclined hole is provided on the driving part, and the locking transverse pin passes through the reversing inclined hole. When the height adjustment handle is in a sliding state, the locking transverse pin is driven through the reversing inclined hole to engage in or exit the height locking groove.

The headrest can be adjusted in height according to children of different ages, taking into full account the characteristics of children's rapid growth and improving the adaptability of the product. The movement of the height adjustment handle can drive the locking cross pin to enter or exit the height locking slot to adjust the headrest. The structure is simple and the operation effect is stable. The movement direction of the height adjustment handle is consistent with the adjustment direction of the headrest, which has low learning cost and good operation experience.

Furthermore, the height adjustment handle has an upward state in which the locking cross pin exits the height locking groove; and a downward state in which the locking cross pin is inserted into the height locking groove. An elastic driving member is provided between the headrest and the height adjustment handle to drive the height adjustment handle to remain in the downward state.

The height adjustment handle can be kept in a depressed state by the elastic driving member, thereby avoiding accidental unlocking of the height locking mechanism during use of the safety seat, thereby improving the safety of the safety seat.

Furthermore, the body of the height adjustment handle has a hollow area, and a positioning seat is provided at the bottom edge of the hollow area; the front side of the headrest is provided with a top seat extending to the hollow area and located above the positioning seat, and the elastic driving member is a compression spring pressed between the top seat and the positioning seat.

The positioning seat is arranged in the hollow area on the body of the height adjustment handle, so the positioning seat and the hollow area can also play the role of guide column and guide hole. In this design, the elastic driving member is arranged between the top seat and the positioning seat, and the structure for guiding the movement of the height adjustment handle and the mechanism for driving the movement of the height adjustment handle are naturally combined, which can further improve the stability of the movement of the height adjustment handle; from the perspective of user experience, a smoother use experience can be obtained.

Furthermore, the headrest is provided with an avoidance hole, and the driving part of the height adjustment handle enters into the backrest through the avoidance hole. The rear side wall of the headrest is provided with an outer cover corresponding to the position of the avoidance hole, and the driving part is located in the outer cover.

The height adjustment handle is connected to both sides of the backrest through the avoidance hole, which can flexibly realize the component layout of the height locking mechanism. The user-operated part is set near the headrest to better suit the user's operating habits, while components such as the locking cross pin are set on the outside of the backrest to meet the design requirements of the safety seat.

Furthermore, side impact protection parts are respectively provided on both sides of the seat backrest, and the side impact protection parts include a shell covering the corresponding side of the backrest, and a cavity structure is formed between the shell and the outer wall of the backrest; the shell includes a collision-bearing part located on the side of the backrest, and the collision-bearing part is bent inwardly toward the edge of the back side of the backrest to form a buffer part, and a plurality of deformation absorbing holes arranged from top to bottom are provided on the buffer part.

The cavity formed by the shell of the side impact protection piece and the backrest can provide effective collision buffering for children, thus avoiding injuries. The design of the deformation absorption hole can improve the energy absorption effect of the side impact protection piece, avoiding the failure of protection in severe collisions. Compared with other design forms, the solution of installing the whole on the backrest of the seat body can avoid the movement mechanism, simplify the installation form, and avoid the gap that may cause secondary injuries to children.

Furthermore, the edge of the collision-bearing portion toward the front side of the backrest is a first arc, the edge of the collision-bearing portion toward the back side of the backrest is a second arc, and the area enclosed by the first arc and the second arc is the collision-bearing portion; a limiting step is provided on the outer wall of the seat backrest, and the first arc and the limiting step are offset against each other for limiting; the deformation absorbing hole is a horizontal strip hole.

The collision-bearing part is formed by the first arc and the second arc, which can effectively optimize the force performance of the collision-bearing part, reduce the deformation of the collision-bearing part during operation, and provide stable protection for the seat body. In addition, the coordination of the limiting step and the collision-bearing part can prevent the side impact protection part from being displaced relative to the seat body during the collision, thereby improving the force performance of the side impact protection part; and the force is distributed to the entire side impact protection part, thereby avoiding the possible protection failure of the shell of the side impact protection part under extreme conditions.

The horizontal direction of the strip hole is the relatively horizontal direction when the safety seat is in normal use. Because the external force direction of the safety seat is mostly from the front, back, left and right of the safety seat during use, the horizontal strip hole can absorb the stress to the maximum extent and improve the safety performance of the safety seat.

The present invention has the following advantages:

(1) The three claws can locate the rotation axis of the turntable so that the turntable can be rotated and installed. The form of the claws can effectively reduce the rotation resistance of the turntable while ensuring the installation strength, thereby achieving a more relaxed operating experience;

(2) The clamping claw is easy to produce and has a simple overall structure, which can effectively reduce production costs and improve product competitiveness;

(3) Through the cooperation of the guide rod and the guide groove, the seat can be adjusted while providing guidance and limit for the seat movement, so that the safety seat will not be loosened due to the added adjustment function, thus reducing safety hazards;

(4) The integrated base can form a frame for mounting the turntable and the support plate, fixing and integrating multiple components, thereby effectively optimizing the stress conditions of the components and improving the life and stability of the components;

(5) The seat and the base are locked by driving the lock pin through the driving handle, thereby locking the seat and the support plate. Locking the seat and the support plate can effectively improve the locking strength and avoid the possibility of accidental unlocking;

(6) The system integrates the functions and layout of multiple components in the restraint system, thereby effectively improving safety performance and reducing production costs.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a child restraint system according to this embodiment;

FIG2 is a schematic cross-sectional view of a child restraint system;

FIG3 is a schematic diagram of the specific structure of a support plate of a child restraint system;

FIG4 is an enlarged schematic diagram of point A in FIG2 ;

FIG5 is a schematic diagram of the specific structure of the pitch adjustment frame of the child restraint system;

FIG6 is an enlarged schematic diagram of point B in FIG5;

FIG7 is a schematic diagram of the specific structure of a child restraint system safety component;

FIG8 is an enlarged schematic diagram of point C in FIG7;

FIG9 is a schematic diagram of the back of a child restraint system;

FIG10 is an enlarged schematic diagram of point D in FIG2;

FIG11 is a schematic diagram of the specific structure of a child restraint system mounting plate;

FIG12 is an enlarged schematic diagram of point E in FIG11;

FIG13 is a schematic diagram of the specific internal structure of the child restraint system headrest;

FIG14 is an enlarged schematic diagram of point F in FIG13;

FIG15 is a schematic diagram of a specific structure of a child restraint system headrest with a cover on the back;

FIG16 is an enlarged schematic diagram of point H in FIG15;

FIG17 is a schematic diagram of removing the outer cover in FIG15;

FIG18 is an enlarged schematic diagram of point G in FIG17;

FIG19 is a schematic diagram of a side impact protection member of a child restraint system;

FIG20 is a schematic diagram of the structure of a side impact protection member;

FIG. 21 is a schematic diagram of the internal structure of the side impact protection component.

Detailed ways

The specific implementation modes of the present invention are described below with reference to the accompanying drawings.

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

As for the rotation function, a turntable bracket 21 is fixed on the base 10 of the child restraint system, and a turntable 22 matching the turntable bracket 21 is provided at the bottom of the seat 11. The turntable 22 is annular, and the turntable bracket 21 is provided with four claws 211, namely a first claw 2111, a second claw 2112, a third claw 2113 and a fourth claw 2114. The claws 211 are spaced apart and pressed against the edge 221 of the turntable 22 to limit the position of the turntable 22.

In this embodiment, the support members 212 and 213 cooperate with the turntable 22 only through the claws 211 , and there is no other rotating shaft in the middle of the base 10 that cooperates with the turntable 22 .

Specifically, the claw 211 is arranged on the supporting member 212 and the supporting member 213 arranged side by side, and the supporting member 212 is provided with a first claw 2111 and a second claw 2112; and the first claw 2111 and the second claw 2112 are arranged facing each other, and a slot is formed between the first claw 2111 and the second claw 2112 and the top edge of the supporting member 212, and the edge 221 of the rotating disk 22 extends into and is limited in the slot. Correspondingly, the supporting member 213 is provided with a third claw 2113 and a fourth claw 2114, and another slot 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 rotating disk 22 extends into and is limited in the slot. The two slots can effectively fix the rotating disk 22, thereby realizing the rotational cooperation of the rotating disk 22. The top edges of the support members 212 and 213 are provided with folding ears 215 for supporting the bottom surface of the rotating disk 22 . In this embodiment, a plurality of folding ears 215 are provided.

In addition to stably installing the turntable 22, the support members 212 and 213 must also be stably connected to the base 10. Therefore, the support members 212 and 213 are both upright plates, and stamped plates can be selected for easy production. The bottom edges of the support members 212 and 213 are both provided with a folded edge 214, which is attached to the base 10 and fixed by bolts.

In order to improve the stability of the support members 212 and 213 , a reinforcing connector 216 is provided between the support members 212 and 213 . The reinforcing connector 216 is located at the periphery of the turntable 22 and has an arc-shaped edge 2161 adapted to the contour of the turntable 22 in the area adjacent to the turntable 22 .

The seat 11 can be stably mounted on the base 10 through the support members 212 and the support members 213. In order to prevent the turntable 22 from rotating randomly in an accident, a rotation locking mechanism 23 acting on the turntable 22 is provided on the base 10. The rotation locking mechanism 23 includes:

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

A locking pin 232 mounted on the push-pull handle 231;

An elastic driving member (not shown) acting between the push-pull handle 231 and the base 10 to drive the push-pull handle 231 into a locking position;

Two opposite sides of the push-pull handle 231 are provided with strip-shaped guide holes 2311 , and the base 10 is provided with guide posts 2312 extending into the guide holes 2311 respectively.

In this embodiment, there are two lock pins 232, and the same side of the two lock pins 232 is connected to each other to form a U-shaped structure, the bottom of the U-shaped structure is fixedly installed in the push-pull handle 231, and the lock pin 232 is provided with a linear groove for fixing the bottom of the U-shaped structure. In order to improve the fixing effect of the lock pin 232, a limiting pressure block 233 is provided on the base 10, and a limiting channel for guiding the reciprocating motion of the lock pin 232 is provided between the limiting pressure block and the base 10, and two limiting pressure blocks 233 are provided corresponding to the two lock pins 232 and are installed separately.

In this embodiment, a pitch adjustment frame 31 is fixed on the turntable 22, and the seat 11 is installed on the pitch adjustment frame 31 with an adjustable angle. A lock groove (not shown) is provided on the pitch adjustment frame 31 to cooperate with the lock pin 232 to locate the rotation angle of the turntable 22. The lock groove is a concave portion corresponding to the shape of the lock pin 232. The lock groove is provided in multiple groups near the turntable 22 of the pitch adjustment frame 31, for example, four groups equidistantly distributed on the circumference, for limiting the four commonly used directions of the seat 11 (forward, reverse, left side, right side), and more positions can be provided accordingly to provide more abundant operations. According to the relevant laws and regulations, only the lock grooves in the forward and reverse directions, that is, the front and rear directions of the pitch adjustment frame 31 near the turntable 22 can be completely locked, and the lock grooves in the other directions only provide a limiting function to facilitate user operation. And when the lock pin 232 is not located in the lock groove in the front and rear directions of the pitch adjustment frame 31 near the turntable 22, a corresponding reminder mechanism is provided to remind the user to pay attention to the corresponding safety hazards.

During use:

When the user needs to rotate the seat 11, the push-pull handle 231 is driven with force. The push-pull handle 231 overcomes the elastic force of the elastic driving member under the guidance of the guide column 2312 and moves back to the seat 11, and at the same time drives the lock pin 232 to move back to the seat 11 and exit the lock slot. At this time, the turntable 22 can rotate freely in the direction 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 toward the seat 11 under the guidance of the guide column 2312 using the elastic force of the elastic driving member, and at the same time drives the lock pin 232 to move toward the seat 11 and enter the lock slot, completing the locking of the seat 11 in the rotation direction, and waiting to set off again. If the lock pin 232 fails to enter the lock slot, the corresponding reminder mechanism reminds the user to pay attention to the corresponding safety hazards.

As for the pitch adjustment function, a matching angle locking mechanism 32 is also provided between the pitch adjustment frame 31 of the child restraint system and the seat 11. The pitch adjustment frame 31 includes a base 311 and a support plate 312 and a support plate 313 standing side by side on the base 311; along the movement path for adjusting the pitch angle of the seat 11, the support plates 312 and 313 are provided with a first guide rod 331 at one end and a second guide groove 332 at the other end; the seat 11 is provided with a first guide groove (located on the back of the seat 11, so it is not shown in the figure) matching with the first guide rod 331, and a second guide rod 333 matching with the second guide groove 332; the guide rods move along the corresponding guide grooves to guide the seat 11 to adjust the pitch angle.

In the specific setting of the guide rod and the guide groove, the first guide rod 331 is an integral rod, and the first guide groove 332 is two arranged on both sides of the axial direction of the first guide rod 331; the first guide rod 331 passes through the support plate 312 and the support plate 313, and the two end parts of the first guide rod 331 are respectively placed in the first guide grooves on the corresponding sides, so that the first guide rod 331 can slide along the first guide groove.

Similarly, the second guide rod 333 is one, and both ends of the second guide rod 333 are respectively fixed on the seat 11, and the middle part of the second guide rod 333 passes through the support plate 312 and the second guide groove 332 of the support plate 313. Therefore, the second guide rod 333 can slide freely along the second guide groove 332.

The cooperation between the first guide rod 331 and the first guide groove, as well as the cooperation between the second guide rod 333 and the second guide groove 332 , can achieve pitch adjustment of the seat 11 relative to the pitch adjustment frame 31 .

In order to better achieve the pitching action, the bottom edges of the support plates 312 and 313 are provided with folded edges 314 that fit with the bottom bracket 311, and a pressure strip 315 that is superimposed on each folded edge 314 and fixed to the bottom bracket 311 is provided between the support plates 312 and 313. Specifically, the pressure strips 315 are two arranged side by side and are in an arc shape.

The support plates 312 and 313 are respectively provided with bearing folds 316 that match the seat 11. Correspondingly, the bottom of the seat 11 is provided with a reinforcing convex strip (located on the back of the seat 11, so it is not shown in the figure) that abuts against the bearing folds 316. The bearing folds 316 on the support plates 312 and 313 are bent toward each other.

In this embodiment, the child restraint system is further provided with a base 10, on which a turntable 22 is rotatably mounted, and a pitch adjustment frame 31 is fixed to the top surface of the turntable 22. The turntable 22 is annular, and the arc shape of the pressure strip 315 corresponds to the turntable. The turntable 22 and the pressure strip 315 clamp the support plate 312 and the support plate 313 protected by the bottom bracket 311 up and down.

In terms of specific form, the bottom bracket 311 is similar to the support plate, and both have 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 rod 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 bottom bracket 311 is an integrated structure, including:

A disc portion 3111 that is fixedly attached to the top surface of the rotating disc 22;

A supporting portion 3112 extending upward from the edge of the disc portion 3111 and cooperating with the first upwardly tilted portion 341;

The supporting portion 3113 is located on the disc portion 3111 and is attached to the side of the second upwardly curved portion 342 .

At this point, the seat 11 has been able to perform pitching motion and is firmly installed on the base 10. In order to prevent the seat 11 from moving relative to the base 10, the angle locking mechanism 32 includes:

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

A locking pin 322 slidably mounted on the seat 11;

A driving handle 323 is provided to enable the locking pin to enter or exit the locking hole.

A guide seat 324 is fixed on the seat 11, and a driving handle 323 is slidably mounted on the guide seat 324. A limiting groove 3241 is provided on the guide seat 324 to limit the sliding path of the driving handle 323. A limiting hole 3242 is provided on the guide seat 324. One end of the locking pin 322 passes through the limiting hole 3242 and cooperates with the locking hole 321, and the other end is provided with a lever 325 extending radially along the locking pin 321; the driving handle 323 is provided with a driving inclined hole 3231 obliquely intersecting the movement path of the locking pin 322, and the lever 325 extends into the driving inclined hole 3231.

In this embodiment, the guide seat 324 is provided with limiting holes 3242 on both sides, so there are two locking pins 322 with a lever 325, which can respectively cooperate with the locking holes 321 on the support plate 312 and the support plate 313.

During use:

When the user needs to unlock and adjust the pitch, the user pulls the driving handle 323 away from the seat 11 with force, and under the action of the driving inclined hole 3231, the two toggle rods 325 are driven to approach each other, so that the two locking pins 322 are moved to approach each other and exit the locking holes 321 on the support plate 312 and the support plate 313. At this time, the seat 11 and the pitch adjustment frame 31 are unlocked, and under the support of the bearing folded edge 316 and the reinforcing convex strip, and in cooperation with the first guide rod 331 and the first guide groove and the second guide rod 333 and the second guide groove, the seat 11 and the pitch adjustment frame 31 are unlocked. Guided by the groove 332, the seat 11 can be pitch adjusted relative to the pitch adjustment frame 31. When the user adjusts to the required angle, the driving handle 323 is released. The driving handle 323 moves toward the seat 11 under the action of the elastic reset component, and under the action of the driving inclined hole 3231, the two toggle rods 325 are driven away from each other, so that the two locking pins 322 move away from each other and enter the locking holes 321 on the support plates 312 and 313. At this time, the seat 11 and the pitch adjustment frame 31 are locked, waiting for the second trigger.

As for the adjustment function of the safety component, the child restraint system is slidably mounted in the base 10 with a safety component 51 for connecting with the vehicle, a positioning rack 52 is mounted on the safety component 51, and a sliding locking mechanism 53 matching the positioning rack 52 is provided on the base 10. The sliding locking mechanism 53 includes:

A locking member 531, wherein the locking member 531 has a locking position for locking into the positioning rack 52 and a releasing position for disengaging from the positioning rack 52;

An unlocking handle 532 is slidably mounted on the base 10. The unlocking handle 532 is provided with a guide inclined hole 533 for driving the locking rod to switch between the locking position and the unlocking position. A portion of the locking member 531 extends into the guide inclined hole 533.

The guide member 534 is located on the base 10 and is used to limit the movement path of the locking rod when switching between the locking position and the unlocking position.

In terms of the specific configuration of the locking member 531, the locking member 531 is a rod-shaped locking rod and passes through the guide inclined hole 533. The end of the locking member 531 passes through the guide member 534 on the corresponding side and then extends further to match the positioning rack 52 on the corresponding side.

In this embodiment, the safety component 51 is an ISOFIX component, so the safety component 51 is arranged in two sets side by side, and the locking member 531 is arranged between the two sets of safety components 51 in a direction perpendicular to the movement direction of the safety component 51, and the two ends of the locking member 531 respectively cooperate with the positioning rack 52 in the corresponding side installation component.

In terms of the specific configuration of the unlocking handle 532: the unlocking handle 532 includes a gripping portion (located at the bottom of the base 10, so it is not shown in the figure), a connecting portion 5321 and a driving portion 5322 connected in sequence, and a guide inclined hole 533 is provided on the driving portion 5322. The guide inclined hole 533 is a bar-shaped hole, and the angle between the extension direction of the guide inclined hole 533 and the sliding direction of the unlocking handle 532 is preferably 45 degrees. There are two guide inclined holes 533 arranged at intervals, and the locking member 531 passes through each guide inclined hole 533 in sequence.

A matching guide mechanism 535 is provided between the unlocking handle 532 and the base 10, and the sliding direction of the unlocking handle 532 is parallel to the movement direction of the safety component 51. Specifically, the guide mechanism 535 includes a first guide hole 5351 in a strip shape provided on the unlocking handle 532, and a guide column 5352 provided on the base 10 and extending into the first guide hole 5351.

In this embodiment, the unlocking handle 532 is longer, extending from the middle of the base 10 to the front of the base 10. Therefore, in order to provide a stable unlocking action, the guide mechanism 535 is provided with multiple groups, such as the guide mechanism 5353 and the guide mechanism 5354 in the figure.

In terms of the specific configuration of the guide member 534 , the guide member 534 is a strip-shaped guide groove, and the extension direction of the guide groove 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 matching the turntable bracket 21 is provided at the bottom of the seat 11, a pitch adjustment frame 31 is fixed on the turntable 22, and the seat 11 is installed on the pitch adjustment frame 31 with an adjustable angle. A second guide hole 211 corresponding to the position and extension direction of the guide member 534 is provided on the turntable bracket 21, and the end of the locking member 531 passes through the second guide hole 211 and the guide member 534 on the corresponding side in sequence, and then further extends to match the positioning rack 52 on the corresponding side.

In the specific setting of the positioning rack 52:

A plurality of oblique teeth are evenly arranged on the positioning rack 52, one side of the oblique teeth is a working surface 521 that engages with the locking member 531 in the locking position, and the other side of the tooth surface is a reset surface 522 that pushes the locking member 531 into the unlocking position when the safety component 51 is reset. The reset surface 522 is parallel to the extending direction of the guide oblique hole 533.

During user use:

When the user needs to push the safety component 51 inward, he only needs to push the part of the safety component 51 exposed outside the base 10. The movement of the safety component 51 will drive the positioning rack 52 to move inward, so that the reset surface 522 of the positioning rack 52 presses the locking member 531. The locking member 531 will move upward under the limitation of the guide member 534, thereby realizing the retraction of the safety component 51.

When the user needs to extend the length of the safety component 51, it is necessary to apply a pulling force to the gripping portion of the unlocking handle 532. At this time, the unlocking handle 532 moves toward the outside of the base 10, and the locking member 531 moves upward under the drive of the guide inclined hole 533 and the limit of the guide member 534, thereby disengaging from the working surface 521 of the positioning rack 52, thereby unlocking the safety component 51, and the safety component 51 can be freely adjusted in length. When the user adjusts to the required length, release the unlocking handle 532. The unlocking handle 532 moves toward the inside of the base 10 under the action of the reset elastic member (not shown), and the locking member 531 moves downward under the drive of the guide inclined hole 533 and the limit of the guide member 534, thereby engaging with the working surface 521 of the positioning rack 52, thereby locking the safety component 51, and the sliding locking mechanism 53 completes a working process and waits to be triggered again.

As for the adjustment function of the force belt, the components of the child restraint system mainly involve a force belt 12 for connecting the seat 11 and an anchor point (not shown in the figure, i.e., a fixed point on a vehicle or other vehicle) and a locking mechanism 13 for adjusting the length of the force belt 12. The locking mechanism 13 includes:

A bracket 131, fixed on the seat 11;

The stop band component 132 is movably mounted on the bracket 131 to limit the movement of the force-bearing band 12;

The unlocking mechanism 14 is mounted on the seat 11 or the bracket 131 and cooperates with the resistance belt component 132 to drive the resistance belt component 132 to release the restriction on the force belt 12.

The specific locking mechanism 13 is arranged as follows: the projection of the bracket 131 in the vertical direction of FIG. 1 is U-shaped, the opening of the U-shaped is used to install the resistance band component 132, and a channel 133 for the force belt 12 to pass through is provided between the resistance band component 132 and the bottom end of the U-shaped. The resistance band component 132 has a rotation axis in space, and in this embodiment, the rotation axis is formed by a rotation shaft 135. And the outer peripheral surface of the resistance band component 132 has a force belt locking portion 1321 protruding toward the bottom end of the U-shaped, and a force belt releasing portion 1322 relatively away from the bottom end of the U-shaped, so that the force belt locking portion 1321 can reduce the cross-sectional area of the channel 133, and the force belt releasing portion 1322 can increase the cross-sectional area of the channel 133. Correspondingly, the force belt locking portion 1321 is provided with friction teeth (not shown) that interact with the force belt 12.

Corresponding to the cross-sectional area of the channel 133 , the resistance band component 132 has a locking state of pressing against the force-bearing band 12 in the channel 133 and a releasing state of releasing the force-bearing band 12 in the channel 133 .

In this embodiment, the bracket 131 and the stop belt component 132 are prefabricated as a whole, and the bracket 131 is also provided with a screw hole 134 for mounting with the seat 11. In some other embodiments, the bracket 131 can be also used as the seat 11, that is, the stop belt component 132 is directly mounted on the seat 11, and the channel 133 is formed by the stop belt component 132 and the seat 11.

In order to improve the locking effect of the locking mechanism 13, the locking mechanism 13 further includes a first elastic member (not shown) for keeping the stop band component 132 in a locked state, and the first elastic member is a coil spring wound between the bracket 131 and the stop band component 132, and the coil spring can be selectively wound on the rotating shaft 135. The stop band component 132 is kept in a locked state.

The locking mechanism 13 is arranged at the rear side of the backrest 110 of the seat 11 and close to the top of the backrest 110, i.e., the upper side in Fig. 1. And the unlocking mechanism 14 and the locking mechanism 13 are arranged 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 used to drive the resistance belt component 132 to enter a released state;

The second elastic member, namely the coil spring 142 sleeved on the positioning rod 1411 , is used to separate the driving member from the resistance 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 matched with the stop belt component 132. Correspondingly, the stop belt component 132 is provided with a trigger handle 1323 protruding outward along its radial direction and matching with the trigger tongue 1412.

A mounting plate 111 is provided on the top of the backrest 110 of the seat 11. The mounting plate 111 is fixed to 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. The bracket 131 and the stop belt component 132 in the locking mechanism 13 are located in the mounting chamber 15. The unlocking mechanism 14 is located outside the mounting chamber 15 and a part of it extends into the mounting chamber 15 to cooperate with the stop belt component 132. A part of the top wall 151 of the mounting chamber 15 is a detachable structure, and the unlocking mechanism 14 is installed on the top wall 151. The top wall 151 is a 7-shaped structure, which is used to enclose the seat 11 to form the mounting chamber 15.

In this embodiment, the positioning rod 1411 of the button 141 is slidably inserted into the cross rod on the top wall 151 and is provided on each of the left and right sides of the button 141. Two corresponding coil springs 142 are also provided. The trigger tongue 1412 is a long strip with a rectangular cross section. The purpose of setting it as a long strip is to increase the contact area with the trigger handle 1323 and improve the stability of the trigger action. The coil spring 142 is wound on the cross rod and its two ends are respectively against the button 141 and the top wall 151. The button 141 is also provided with a limiter 1413 that cooperates with the top wall 151 to prevent the button 141 from being pushed out of the top wall 151 by the coil spring 142.

The side wall 152 of the installation chamber 15 facing away from the top wall 151, i.e., located on the installation plate 111, is provided with a belt inlet 1521 and a belt outlet 1522 corresponding to the position of the channel 133 for the force belt 12 to pass through. The backrest 110 is also provided with a decorative panel 16 covering the outside of the installation chamber 15, and the decorative panel is provided with a guide port 161 corresponding to the position of the belt inlet 1521 and the belt outlet 1522. The inlet and outlet of the belt inlet 1521 and the belt outlet 1522 are only relative concepts. For example, the belt inlet when the working length of the force belt 12 is adjusted to be longer is the belt outlet when the working length of the force belt 12 is adjusted to be shorter.

Different parts of the force-bearing belt 12 pass through the channel 133. After passing through the channel 133, the length of the force-bearing belt 12 is locked, that is, it becomes the working length, and the length that has not passed through the channel 133 is the standby length. Therefore, the working length of the force-bearing belt 12 can be changed according to the force-bearing belt 12 passing through the channel 133.

During use;

When the user needs to adjust the working length of the force belt 12, the button 141 is pressed hard. Under the guidance of the positioning rod 1411, the button 141 overcomes the elastic force of the coil spring 142 and moves into the installation chamber 15. During the movement, the trigger tongue 1412 presses the trigger handle 1323 and drives the resistance belt component 132 to rotate around the rotation axis 135 in the counterclockwise direction in the figure. The resistance belt component 132 overcomes the elastic force of the first elastic member and rotates. At this time, the force belt locking portion 1321 of the resistance belt component 132 moves away from the bracket 131 in the counterclockwise direction in the figure, and the force belt releasing portion 1322 approaches the bracket 131 in the counterclockwise direction in the figure. The cross-sectional area of the channel 133 is increased, and the force belt 12 can move freely, and the user can adjust it conveniently.

When the adjustment is completed, the user releases the button 141. Under the elastic force of the coil spring 142 and the guidance of the positioning rod 1411, the button 141 moves back to the installation chamber 15, the trigger tongue 1412 no longer applies pressure to the trigger handle 1323, and the resistance band component 132 rotates clockwise in the figure under the elastic force of the first elastic member. At this time, the force band locking portion 1321 of the resistance band component 132 approaches the bracket 131 in the clockwise direction in the figure, and the force band releasing portion 1322 moves away from the bracket 131 in the clockwise direction in the figure, the cross-sectional area of the channel 133 is reduced, and the force band 12 is locked.

At this time, if the child restraint system is subjected to external force, the force belt 12 bears the load, so the force belt 12 will tend to move to the right in the figure. Therefore, the force belt locking portion 1321 of the resistance belt component 132 will be subjected to the friction force in the downward direction in the figure, so the resistance belt component 132 will remain in the locked state, improving the safety performance of the stroller, until the button 141 is triggered again.

As for the height adjustment function of the headrest, the headrest 61 of the child restraint system slides and rises along the backrest 110, and a height locking mechanism 62 cooperating with each other is provided between the backrest 110 and the headrest 61. The height locking mechanism 62 includes:

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

A locking transverse pin 622 that matches the height locking slot 621;

A height adjustment handle 623 is slidably mounted on the headrest 61, and the height adjustment handle 623 includes a main body 6231 attached to the front side of the headrest 61, and a driving part 6232 located at the bottom end of the main body 6231, the driving part passes through the headrest 61 and extends into the backrest 110, a reversing inclined hole 6233 is provided on the driving part 6232, and a locking cross pin 622 passes through the reversing inclined hole 6233. When the height adjustment handle 623 is in a sliding state, the locking cross pin 622 is driven by the reversing inclined hole 6233 to engage in or exit the height locking groove 621.

In terms of the specific form of the height adjustment handle 623, the height adjustment handle 623 is in the shape of a long strip, and a guide hole 6234 extending along the direction of its movement is provided on the body 6231 of the height adjustment handle 623, and a guide column 611 moving along the guide hole 6234 is provided on the front side of the headrest 61. The body of the height adjustment handle 623 has a hollow area 6235, and a positioning seat 6236 is provided at the bottom edge of the hollow area 6235; 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 pressed between the top seat 612 and the positioning seat 6236. In this embodiment, the positioning seat 6236 is a cross protrusion, and a compression spring is wound on the cross protrusion to prevent displacement; the top seat 612 is a square protrusion that matches the shape of the hollow area 6235, and the top seat 612 cooperates with the hollow area 6235 to supplement the guiding function of the guide hole 6234 and the guide column 611.

In the installation of the height adjustment handle 623, a pillow pad 615 is 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 pad 615. The headrest 61 is provided with an avoidance hole 613, and the driving part of the height adjustment handle 623 enters the backrest 110 through the avoidance hole. The rear side wall of the headrest 61 is provided with an outer cover 614 corresponding to the position of the avoidance hole 613, and the driving part 6232 is located in the outer cover 614. The two opposite side walls of the outer cover 614 are provided with bar holes 6141 that limit the movement path of the locking transverse pin 622 to enter or exit the height locking groove 621. The two ends of the locking transverse pin 622 respectively penetrate 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 this embodiment, the extension direction of the bar hole 6141 is perpendicular to the movement direction of the height adjustment handle 623. In other embodiments, the extension direction of the strip hole 6141 is different from the movement direction of the height adjustment handle 623 .

In the 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 clamping area of the headrest 61 and the pillow pad 615 and is provided with a pull ring 6238. By pulling the pull ring 6238, the height adjustment handle 623 can enter the lifting state to make the locking cross pin 622 exit the height locking groove 621; by releasing the pull ring 6238, the height adjustment handle 623 can enter the pressing state to make the locking cross pin 622 snap into the height locking groove 621 through the elastic force of the elastic driving member.

In terms of the setting 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 stopper 1102 protruding along the tooth height direction is provided at the end of each rack 1101 .

During use:

When the user needs to adjust the height of the headrest 61, he only needs to pull the pull ring 6238. The pull ring 6238 can pull the height adjustment handle 623 through the flexible pull cable 6237. The height adjustment handle 623 moves upward on the movement path formed by the top seat 612, the hollow area 6235, the guide hole 6234 and the guide column 611; the driving part 6232 of the height adjustment handle 623 applies a thrust to the locking cross pin 622 through the reversing inclined hole 6233 during the upward movement. Under the guidance of the bar hole 6141, the locking cross pin 622 moves away from the backrest 110, so that the two ends are disengaged from the height locking groove 621 to be unlocked. At this time, the user can freely adjust the height of the headrest 61.

When the adjustment is in place, the user releases the lifting ring 6238, and the height adjustment handle 623 receives the elastic force of the elastic driving member, so it moves downward on the movement path formed by the top seat 612, the hollow area 6235, the guide hole 6234 and the guide column 611; the driving part 6232 of the height adjustment handle 623 applies a pulling force to the locking cross pin 622 through the reversing inclined hole 6233 during the downward movement, and under the guidance of the bar hole 6141, the locking cross pin 622 approaches the backrest 110, so that the two ends are stuck in the height locking groove 621 to achieve locking, and the height locking mechanism 62 completes a complete locking and unlocking, waiting to be triggered again.

As far as side impact protection is concerned, the child restraint system is provided with side impact protection parts 41 on both sides of the backrest 110 of the seat 11, and the side impact protection parts 41 include a shell 410 which is covered on the corresponding side of the backrest 110, and a cavity structure is formed between the shell 410 and the outer wall of the backrest 110; the shell 410 includes a collision-bearing part 411 located on the side of the backrest 110, and the edge of the collision-bearing part 411 toward the rear side of the backrest 110 is bent inward to form a buffer part 412, and a plurality of deformation absorbing holes 413 arranged from top to bottom are provided on the buffer part 412.

In terms of the specific form of the housing 410 of the side impact protection member 41:

The edge of the collision portion 411 facing the front side of the backrest 110 is the first arc 4111, the edge of the collision portion 411 facing the rear side of the backrest 110 is the second arc 4112, and the area enclosed by the first arc 4111 and the second arc 4112 is the collision portion 411. In this embodiment, the second arc 4112 also becomes the junction position of the collision portion 411 and the buffer portion 412. The first arc 4111 and the second arc 4112 enclose the collision portion 411, so the collision portion 411 forms a shape with small ends and a large middle in the height direction of the seat 11. As shown in Figure 1, the backrest 110 of the seat 11 is an arc, which fits the arc of the backrest 110 of the seat 11. The thickness of the cavity structure between the shell 410 and the outer wall of the backrest 110 gradually increases along the direction from front to back of the seat 11. The width of the buffer portion 412 gradually increases from top to bottom, and then gradually decreases after reaching the middle of the buffer portion 412 in the height direction. Therefore, the side of the collision portion 411 facing the seat 11 can remain relatively vertical. In order to improve the force-bearing performance of the collision portion 411, a reinforcing rib 4113 with an undulating height relative to the surface where the collision portion 411 is located is provided on the collision portion 411.

In terms of the specific shape of the deformation absorbing hole 413 of the side impact protection member 41:

The deformation absorbing hole 413 is a horizontal strip hole. The horizontal direction is the relatively horizontal direction in Figure 1, and the inner edge of the deformation absorbing hole 413 has a smooth edge. One end of the deformation absorbing hole 413 adjacent to the collision part 411 extends to the collision part 411 beyond the junction between the collision part 411 and the buffer part 412. In terms of specific parameters, the length of the deformation absorbing hole 413 is about 80% of the width of the buffer part 412 at the location. Because the width of the buffer part 412 changes with the height direction of the seat 11, the length of the deformation absorbing hole 413 also changes with the height direction of the seat 11. The width of the deformation absorbing hole 413 is preferably 8 mm.

Regarding the installation details of the side impact protection member 41:

The outer wall of the backrest 110 of the seat 11 is provided with a limiting step 1101, and the edge of the collision part 411 facing the front side of the backrest 110 is limited by the limiting step 1101. An internal threaded sleeve 4114 is provided on the inner wall of the collision part 411, and is fixed to the backrest 110 of the seat 11 by a screw matched with the internal threaded sleeve 4114. A reinforcing rib 4115 is provided between the inner wall of the collision part 411 and the outer wall of the internal threaded sleeve 4114. Each internal threaded sleeve 4114 is provided with a plurality of reinforcing ribs 4115.

It should be noted that the functional components of the child restraint system in the present invention are not simply superimposed, but are interrelated and interact with each other, which essentially improves the safety of children, and the combination of various functions can produce synergistic effects. For example, the rotation function and the pitch adjustment function can greatly increase the freedom of seat adjustment; for another example, the height adjustment of the headrest will affect the overall center of gravity of the restraint system, and the design of the force belt can effectively overcome the protective effect of the restraint system after the center of gravity is raised. There are many similar synergies, and those skilled in the art can easily understand the various combinations and synergistic effects of the present invention. Therefore, the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims (12)

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;

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.

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;

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.

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;

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.

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

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.

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:

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.

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 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.

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.