阅读说明：本技术 一种儿童座椅 (Child seat ) 是由 肖国兵 于 2021-02-22 设计创作，主要内容包括：本发明公开了一种儿童座椅,包括安装板、第一安装座、第二安装座、座椅主体、安全带、可拆卸安全带卡座、侧护板和磁铁,所述的安装板固定设置在自动车后车架上；所述的第一安装座固定设置在安装板顶面的后部；所述的第二安装座固定设置在安装板顶面的前部；所述的座椅主体包括底板、靠板和侧护栏,所述的靠板固定设置在底板的顶面后边缘,所述的侧护栏固定设置在底板顶面前后边缘上,所述的底板底面的前部可转动的设置在第二安装座上,底板底面的后部连接在第一安装座上,所述的第一安装座受到超过第一阈值的拉力后解体,底板失去第一安装座的支撑,所述的侧护板可转动的设置在侧护栏顶部的横向杆上,本发明结构简单,使用方便。(The invention discloses a child seat which comprises a mounting plate, a first mounting seat, a second mounting seat, a seat main body, a safety belt, a detachable safety belt clamping seat, a side guard plate and a magnet, wherein the mounting plate is fixedly arranged on a rear frame of an automatic vehicle; the first mounting seat is fixedly arranged at the rear part of the top surface of the mounting plate; the second mounting seat is fixedly arranged at the front part of the top surface of the mounting plate; the seat main body comprises a bottom plate, a backup plate and side guardrails, wherein the backup plate is fixedly arranged at the rear edge of the top surface of the bottom plate, the side guardrails are fixedly arranged at the front edge and the rear edge of the top surface of the bottom plate, the front part of the bottom surface of the bottom plate is rotatably arranged on the second mounting seat, the rear part of the bottom surface of the bottom plate is connected to the first mounting seat, the first mounting seat is disassembled after being subjected to a pulling force exceeding a first threshold value, the bottom plate loses the support of the first mounting seat, and the side guardrails are rotatably arranged on transverse rods at the tops of the side guardrails.)

1. A child seat, characterized by: comprises a mounting plate, a first mounting seat, a second mounting seat, a seat main body, a safety belt, a detachable safety belt clamping seat, a side guard plate and a magnet,

the mounting plate is fixedly arranged on the rear frame of the automatic vehicle;

the first mounting seat is fixedly arranged at the rear part of the top surface of the mounting plate;

the second mounting seat is fixedly arranged at the front part of the top surface of the mounting plate;

the seat main body comprises a bottom plate, a backup plate and side guardrails, wherein the backup plate is fixedly arranged at the rear edge of the top surface of the bottom plate, the side guardrails are fixedly arranged at the front edge and the rear edge of the top surface of the bottom plate, the front part of the bottom surface of the bottom plate is rotatably arranged on a second mounting seat, the rear part of the bottom surface of the bottom plate is connected to a first mounting seat, the first mounting seat is disassembled after being subjected to a tensile force exceeding a first threshold value, the bottom plate loses the support of the first mounting seat, the side guard plate is rotatably arranged on a transverse rod at the top of the side guardrails and is provided with a torsional spring, the torsional spring can drive the side guard plate to rotate towards the outer side of the bottom plate, and the side guard plate is propped against a limiting position by a first limiting block arranged on the transverse rod, so;

the magnet is fixedly arranged at the rear part of the bottom surface of the bottom plate and can be adsorbed on the mounting plate;

the detachable safety belt clamping seat is fixedly arranged on two sides of the bottom plate and comprises a first seat body, a first fixing block, a first clamping block, a bolt, a first connecting magnet and a second connecting magnet, the first seat body is fixedly arranged on two sides of the bottom plate and is provided with a first installation cavity penetrating through the top surface and the front and rear side surfaces, the left and right side surfaces of the first seat body are symmetrically provided with first clamping grooves, the first fixing block is slidably arranged in the first installation cavity, the top surface of the first fixing block is provided with a second clamping groove at the position corresponding to the first clamping groove, the first clamping block is arranged in the first clamping groove and the second clamping groove in an interference fit manner, the first clamping block is separated from the first clamping groove and the second clamping groove after being subjected to a tensile force greater than a second threshold value, the first threshold value is smaller than the second threshold value, and the first connecting magnet is arranged on the end surface of the first clamping block facing the side guard plate, the side guard plate is provided with a second connecting magnet at a corresponding position, the end face of the first clamping block facing the center of the bottom plate is provided with a mounting hole, and the bolt is in interference fit with the mounting hole;

the two ends of the safety belt are fixed on the first clamping block by bolts;

wherein:

when a child pulls the safety belt, and the pulling force of the safety belt pulling the seat main body is greater than a first threshold value and less than a second threshold value, the first mounting seat is disassembled, the seat main body is rotated by the magnet with the second mounting seat as a circle center, and the rear part of the bottom plate is adsorbed on the mounting plate;

when a child pulls the safety belt, and the pulling force of the safety belt pulling seat main body is greater than the second threshold value, the safety belt drives the first clamping block to separate from the first seat body, the first connecting magnet and the second connecting magnet are separated, and the side protection plate rotates towards the outer side of the bottom plate under the driving of the torsion spring.

2. A child seat according to claim 1, wherein: the first mounting seat comprises a rear seat body, a rear fixing block, a rear clamping block and a damping support, the damping support is arranged on two sides of the rear part of the bottom surface of the bottom plate, the rear seat body is fixedly arranged on the top surface of the mounting plate and provided with a rear mounting hole penetrating through the top surface, the rear seat body is symmetrically provided with first rear clamping grooves on the side surface, the top surface of the rear fixing block is provided with a second rear clamping groove at the position corresponding to the first rear clamping groove, the rear fixing block is suspended in the rear mounting hole and fixed by the rear clamping block, the damping support is fixedly arranged between the rear fixing block and the bottom plate, and a cross rod of the damping support is fixedly arranged on the rear fixing block.

3. A child seat according to claim 2, wherein: the second mounting seat comprises a front mounting seat, a bearing seat and a damping support, the front mounting seat is fixedly arranged at the front part of the mounting plate, the bearing seat is arranged in the front mounting seat, and a cross rod of the damping support is rotatably arranged in the bearing seat.

4. A child seat according to claim 3, wherein: the damping support comprises a vertical rod, a transverse rod and a first damping spring, the vertical rod is fixedly arranged on the bottom surface of the bottom plate, the bottom end of the vertical rod can be arranged on the inner side end of the transverse rod in a vertically sliding mode, the first damping spring is sleeved on the vertical rod in a compression state, and the two ends of the first damping spring are respectively arranged on the bottom surface of the bottom plate and the transverse rod.

5. A child seat according to claim 4, wherein: the seat main part still include the leg and hold in the palm, the leg hold in the palm including layer board, articulated seat, second damping spring and rigidity rope, the layer board utilize articulated seat to set up on the front end of bottom plate, second damping spring be setting on the mounting panel of compression state to support layer board bottom surface front end, the both ends of rigidity rope fixed the setting respectively on layer board bottom surface and mounting panel, the preceding terminal surface of bottom plate is provided with the second stopper, second stopper and the separable support of layer board terminal surface lean on to make the layer board keep the level.

6. A child seat according to claim 5, wherein: the included angle between the side guard rail and the side guard plate is 145 degrees.

Technical Field

The invention relates to the technical field of seats, in particular to a child seat.

Background

Many people can install the seat that children took additional on bicycle or electric motor car now, and this kind of seat only is used for children to take, but lacks the structure to children's protection, when toppling over in the face of bicycle or electric motor car, and adult relies on the size to save oneself, and children can't carry out the self-protection, and it is comparatively serious to cause children's injury.

When the electric vehicle or the bicycle is in rear-end collision or sudden stop, the child can rush forwards due to inertia, and the child is injured after being separated from the vehicle body. The electric vehicle or the bicycle is easy to press children after being toppled over, and secondary damage is caused to the children.

Based on this, there is a need for a child seat that can be added to an automotive vehicle or an electric vehicle and has a protective effect.

Disclosure of Invention

The object of the present invention is to provide a child seat that solves the above mentioned problems.

In order to achieve the purpose, the invention provides the following technical scheme: a child seat comprises a mounting plate, a first mounting seat, a second mounting seat, a seat body, a safety belt, a detachable safety belt clamping seat, a side guard plate and a magnet,

the mounting plate is fixedly arranged on the rear frame of the automatic vehicle;

the first mounting seat is fixedly arranged at the rear part of the top surface of the mounting plate;

the second mounting seat is fixedly arranged at the front part of the top surface of the mounting plate;

the seat main body comprises a bottom plate, a backup plate and side guardrails, wherein the backup plate is fixedly arranged at the rear edge of the top surface of the bottom plate, the side guardrails are fixedly arranged at the front edge and the rear edge of the top surface of the bottom plate, the front part of the bottom surface of the bottom plate is rotatably arranged on a second mounting seat, the rear part of the bottom surface of the bottom plate is connected to a first mounting seat, the first mounting seat is disassembled after being subjected to a tensile force exceeding a first threshold value, the bottom plate loses the support of the first mounting seat, the side guard plate is rotatably arranged on a transverse rod at the top of the side guardrails and is provided with a torsional spring, the torsional spring can drive the side guard plate to rotate towards the outer side of the bottom plate, and the side guard plate is propped against a limiting position by a first limiting block arranged on the transverse rod, so;

the magnet is fixedly arranged at the rear part of the bottom surface of the bottom plate and can be adsorbed on the mounting plate;

the detachable safety belt clamping seat is fixedly arranged on two sides of the bottom plate and comprises a first seat body, a first fixing block, a first clamping block, a bolt, a first connecting magnet and a second connecting magnet, the first seat body is fixedly arranged on two sides of the bottom plate and is provided with a first installation cavity penetrating through the top surface and the front and rear side surfaces, the left and right side surfaces of the first seat body are symmetrically provided with first clamping grooves, the first fixing block is slidably arranged in the first installation cavity, the top surface of the first fixing block is provided with a second clamping groove at the position corresponding to the first clamping groove, the first clamping block is arranged in the first clamping groove and the second clamping groove in an interference fit manner, the first clamping block is separated from the first clamping groove and the second clamping groove after being subjected to a tensile force greater than a second threshold value, the first threshold value is smaller than the second threshold value, and the first connecting magnet is arranged on the end surface of the first clamping block facing the side guard plate, the side guard plate is provided with a second connecting magnet at a corresponding position, the end face of the first clamping block facing the center of the bottom plate is provided with a mounting hole, and the bolt is in interference fit with the mounting hole;

the two ends of the safety belt are fixed on the first clamping block by bolts;

wherein:

when a child pulls the safety belt, and the pulling force of the safety belt pulling the seat main body is greater than a first threshold value and less than a second threshold value, the first mounting seat is disassembled, the seat main body is rotated by the magnet with the second mounting seat as a circle center, and the rear part of the bottom plate is adsorbed on the mounting plate;

when a child pulls the safety belt, and the pulling force of the safety belt pulling seat main body is greater than the second threshold value, the safety belt drives the first clamping block to separate from the first seat body, the first connecting magnet and the second connecting magnet are separated, and the side protection plate rotates towards the outer side of the bottom plate under the driving of the torsion spring.

Further, the first mounting seat comprises a rear seat body, a rear fixing block, a rear clamping block and a damping support, the damping support is arranged on two sides of the rear portion of the bottom surface of the bottom plate, the rear seat body is fixedly arranged on the top surface of the mounting plate, a rear mounting hole penetrating through the top surface is formed in the rear seat body, first rear clamping grooves are symmetrically formed in the side surface of the rear seat body, a second rear clamping groove is formed in the position, corresponding to the first rear clamping groove, of the top surface of the rear fixing block, the rear fixing block is suspended in the rear mounting hole and fixed through the rear clamping block, the damping support is fixedly arranged between the rear fixing block and the bottom plate, and a cross rod of the damping support is fixedly arranged on the rear fixing block.

Furthermore, the second mounting base comprises a front mounting base, a bearing seat and a damping support, the front mounting base is fixedly arranged at the front part of the mounting plate, the bearing seat is arranged in the front mounting base, and a cross rod of the damping support is rotatably arranged in the bearing seat.

Further, shock-absorbing support include montant, horizontal pole and first damping spring, the montant fixed set up the bottom surface at the bottom plate to the gliding setting about the bottom of montant is served at the inboard of horizontal pole, first damping spring be compression state's suit on the montant, and both ends are respectively on bottom plate bottom surface and horizontal pole.

Further, the seat main part still include the leg and hold in the palm, the leg hold in the palm including layer board, articulated seat, second damping spring and rigidity rope, the layer board utilize articulated seat to set up on the front end of bottom plate, second damping spring be compression state's setting on the mounting panel to support layer board bottom surface front end, the both ends of rigidity rope fixed the setting respectively on layer board bottom surface and mounting panel, the preceding terminal surface of bottom plate is provided with the second stopper, second stopper and the separable support of layer board terminal surface lean on, so that the layer board keeps the level.

Further, the included angle between the side guard rail and the side guard plate is 145 degrees.

Compared with the prior art, the invention has the following beneficial effects:

this application can install additional on the bicycle, makes things convenient for the adult to carry children's purpose.

The child seat has high safety performance, and specifically has a two-stage protection mode, wherein the first stage is that the pulling force for the child to give the safety belt is greater than a first threshold value, and when the pulling force is smaller than a second threshold value, the first mounting seat is disassembled, at the moment, the magnet adsorbs the bottom plate, the seat body is rotated backwards by the center of the second mounting seat, namely, the child applies for backward following backward tilting, the possibility of forward sliding of the child is reduced, the advancing distance of the child is reduced, the protection purpose is achieved, after the pulling force applied to the child is increased, the safety belt drives the first clamping block to be separated from the first seat body, the first connecting magnet and the second connecting magnet are separated, the side protection plate is rotated towards the outer side of the bottom plate under the driving of the torsion spring, at the moment, the safety belt is separated from the child, the separation of the child from the vehicle is ensured, meanwhile, under the control of no magnetic force, the side, the side guard plate is used for supporting, so that a certain space is formed between the seat main body and the ground, children are protected in the space, the injury of the children is reduced, and the possibility and the injury that the vehicle overwhelms the children are reduced.

Drawings

FIG. 1 is a side view of the present invention;

FIG. 2 is a schematic view of the first mounting base and the bottom plate of the present invention;

FIG. 3 is a schematic view of a first mounting base of the present invention;

FIG. 4 is a schematic view of a second mounting base of the present invention engaged with a base plate;

FIG. 5 is a schematic view of the side guard, removable seat belt cartridge, base plate and seat belt of the present invention in combination;

FIG. 6 is a top view of the removable seat belt cartridge, base plate and seat belt assembly of the present invention;

fig. 7 is a front view of the removable seat belt cartridge of the present invention.

In the figure: mounting plate-1, first mounting seat-2, second mounting seat-3, seat body-4, safety belt-5, detachable safety belt clamping seat-6, side guard plate-7, magnet-8, damping bracket-9, rear seat body-20, rear fixing block-21, rear clamping block-22, rear mounting hole-23, first rear clamping groove-24, second rear clamping groove-25, front mounting seat-30, bearing seat-31, bottom plate-40, backup plate-41, side guard-42, leg support-43, support plate-44, hinged seat-45, second damping spring-46, rigid rope-47, second limiting block-48, transverse rod-420, vertical rod-421, torsion spring-422, first limiting block-423, torsion spring-422, The device comprises a first seat body-60, a first fixing block-61, a first clamping block-62, a bolt-63, a first connecting magnet-64, a second connecting magnet-65, a first mounting cavity-66, a first clamping groove-67, a second clamping groove-68, a mounting hole-69, a cross rod-90, a vertical rod-91 and a first damping spring-92.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to the drawings, the present invention provides an embodiment: a child seat comprises a mounting plate 1, a first mounting seat 2, a second mounting seat 3, a seat body 4, a safety belt 5, a detachable safety belt clamping seat 6, a side guard plate 7 and a magnet 8,

the mounting plate 1 is fixedly arranged on the rear frame of the automatic vehicle, and the mounting plate 1 is kept horizontal.

The first mounting seat 2 is fixedly arranged at the rear part of the top surface of the mounting plate 1, the first mounting seat 2 comprises a rear seat body 20, a rear fixing block 21, a rear clamping block 22 and a shock absorption bracket 9, the shock absorption brackets are arranged at the two sides of the rear part of the bottom surface of the bottom plate 40, the rear seat body 20 is fixedly arranged at the top surface of the mounting plate 40, and the rear seat 20 is provided with a rear mounting hole 23 penetrating the top surface, the side surface of the rear seat 20 is symmetrically provided with a first rear clamping groove 24, a second rear clamping groove 25 is arranged on the top surface of the rear fixing block 21 at a position corresponding to the first rear clamping groove 24, the rear fixing block 21 is suspended in the rear mounting hole 23, and is fixed by a rear fixture block 22, the shock absorption bracket is fixedly arranged between the rear fixture block 22 and the bottom plate 40, and a cross bar 90 of the shock absorption bracket 9 is fixedly arranged on the rear fixture block 21.

The fixed front portion that sets up at mounting panel 1 top surface of second mount pad 3, second mount pad 3 include anterior mount pad 30, bearing frame 31, shock absorber support 9, anterior mount pad 30 fixed set up in the front portion of mounting panel 40, bearing frame 31 set up in anterior mount pad 30, shock absorber support 9's horizontal pole 90 rotatable setting in bearing frame 31.

Shock absorber support 9 include montant 91, horizontal pole 90 and first damping spring 92, montant 91 fixed the setting in the bottom surface of bottom plate 40 to the gliding setting about the bottom of montant 91 is served at the inboard of horizontal pole 90, first damping spring 92 be compression state's suit on montant 91, and both ends are respectively on bottom plate 40 bottom surface and horizontal pole 90.

The seat body 4 comprises a bottom plate 40, a backup plate 41 and side guardrails 42, the backup plate 41 is fixedly arranged at the rear edge of the top surface of the bottom plate 40, the side guardrails 42 are fixedly arranged at the front and rear edges of the top surface of the bottom plate 40, the front and rear directions are directions vertical to the paper surface, each side guardrail 42 comprises a transverse rod 420 and a vertical rod 421, the front part of the bottom surface of the bottom plate 40 is rotatably arranged on the second mounting seat 3, the rear part of the bottom surface of the bottom plate 40 is connected on the first mounting seat 2, the first mounting seat 2 is disassembled after being subjected to a pulling force exceeding a first threshold value, the bottom plate 40 loses the support of the first mounting seat 2, the side guard plate 7 is rotatably arranged on the transverse rod 420 at the top of the side guardrail 42 and is provided with a torsion spring 422, the torsion spring 422 can drive the side guard plate 7 to rotate towards the outer side of the bottom plate 30 and is abutted against the limit position by a first, so that the included angle between the side guard plate 7 and the side guard rail 42 is 90-180 degrees, preferably, the included angle between the side guard rail 42 and the side guard plate 7 is 145 degrees, the seat body 4 further comprises a leg support 43, the leg support 43 comprises a supporting plate 44, a hinge seat 45, a second damping spring 46 and a rigid rope 47, the supporting plate 44 is arranged at the front end of the bottom plate 40 through the hinge seat, the second damping spring 46 is arranged on the mounting plate 40 in a compressed state and supports the front end of the bottom surface of the supporting plate 44, two ends of the rigid rope 47 are respectively fixedly arranged on the bottom surface of the supporting plate 44 and the mounting plate 1, a second limiting block 48 is arranged on the front end surface of the bottom plate 40, and the second limiting block 48 and the end surface of the supporting plate 44 can be detachably abutted so that the supporting plate 44 can be kept horizontal. The leg support can support the legs of the child, so that the child can feel more comfortable.

The magnet 8 is fixedly arranged at the rear part of the bottom surface of the bottom plate 40 and can be adsorbed on the mounting plate 1.

The detachable safety belt clamping seat 6 is fixedly arranged at two sides of the bottom plate 40, the detachable safety belt clamping seat 6 is positioned at two sides of two legs of a child, the detachable safety belt clamping seat 6 comprises a first seat body 60, a first fixing block 61, a first clamping block 62, a bolt 63, a first connecting magnet 64 and a second connecting magnet 65, the first seat body 60 is fixedly arranged at two sides of the bottom plate 60, the first seat body 60 is provided with a first mounting cavity 66 penetrating through the top surface and the front and rear side surfaces, the left and right side surfaces of the first seat body 60 are symmetrically provided with first clamping grooves 67, the first fixing block 61 is slidably arranged in the first mounting cavity 66, the top surface of the first fixing block 61 is provided with a second clamping groove 68 at the position corresponding to the first clamping groove 67, the first clamping block 62 is arranged in the first clamping groove 67 and the second clamping groove 68 in an interference fit manner, and it is worth pointing out that the first fixing block 61 is arranged at the bottom surface of the first mounting cavity 66, first joint piece 62 is receiving the pulling force that is greater than the second threshold value after, breaks away from with first draw-in groove 67 and second draw-in groove 68, and first threshold value is less than the second threshold value, and first joint piece 62 is provided with first connecting magnet 64 on the terminal surface towards side guard plate 7, side guard plate 7 be provided with second connecting magnet 65 in the place that corresponds, the existence of first connecting magnet 64 and second connecting magnet 65 can make side guard plate 7 overcome the elasticity of torsional spring 422, the laminating is on side guardrail 42, first joint piece 62 has seted up mounting hole 69 on the terminal surface towards the bottom plate center, bolt 63 and mounting hole 69 interference fit, it is worth pointing out that bolt 63 is perpendicular to first joint piece 62.

The both ends of safety belt 5 utilize bolt 63 to fix on first joint piece 62, be provided with the metal head at the tip of safety belt 5, set up the through-hole that supplies bolt 63 to pass through on the metal head, can the safety belt 5 locking on bottom plate 40 through bolt 63, and then with children's both legs locking in seat main part 4.

Wherein:

when the child pulls the safety belt 5, and the pulling force of the safety belt 5 pulling the seat main body 4 is greater than the first threshold value and less than the second threshold value, the first mounting seat 2 is disassembled, the magnet 8 rotates the seat main body 4 around the second mounting seat 3, and the rear portion of the bottom plate 40 is adsorbed on the mounting plate 1.

When the child pulls the safety belt 5, and the pulling force of the safety belt 5 pulling the seat body 1 is greater than the second threshold value, the safety belt 5 drives the first clamping block 62 to separate from the first seat body 60, the first connecting magnet 64 and the second connecting magnet 65 are separated, and the side guard plate 7 is driven by the torsion spring 422 to rotate towards the outer side of the bottom plate 40.

The use scenario is as follows:

in normal use, the seat described above is mounted on the rear hanger of a bicycle, with the base plate 40 horizontal, the support plate 44 horizontal, the side guards 7 attached to the side guards 42, and after a child sits on the seat body 4, the harness 4 is secured to the removable harness holder 6 using the latch 63, and the harness 5 can restrain the legs of the child.

When sudden braking or rear-end collision occurs, the child can be moved forward by the forward inertia, the safety belt 5 limits the position of the child, when the pulling force is greater than a first threshold value and less than a second threshold value, the first mounting seat 2 is disassembled, the disassembling process comprises that the bottom plate 40 drives the rear fixing block 21 to move upward through the shock absorption frame 9, the rear fixing block 21 is separated from the rear mounting hole 23 by overcoming the friction force between the rear fixing block 22 and the first rear clamping groove 24 and the second rear clamping groove 25, at this time, the bottom plate 40 loses the support of the first mounting seat 2, the magnet 8 adsorbs the bottom plate 40, so that the rear part of the bottom plate 40 is adsorbed on the mounting plate 1, the front end of the bottom plate 40 tilts upward, the fulcrum is the second mounting seat 3, the tendency that the child can be limited to move forward by the backward tilting of the bottom plate 40, and it is worth pointing out that the front end of the bottom plate, the second shock absorbing spring 46 tilts the support plate 44 upward, and the support plate 44 is used for preventing the child from sliding forward along the bottom plate 40, so as to limit the sliding of the child.

When the bicycle driving process is toppled over, the pulling force that children gave safety belt 5 is greater than the second threshold value, safety belt 5 can stimulate first fixed block 61 and overcome the frictional force of first joint piece 62 with first draw-in groove 67 and second draw-in groove 68, first fixed block 61 breaks away from first installation cavity 66, first connecting magnet 64 and the separation of second connecting magnet 65, at this moment, safety belt 5 breaks away from with seat main part 4, children and bicycle break away from have been realized, the thing that children followed the bicycle and slided together takes place, and after side guard plate 7 lost the pulling force of first connecting magnet 64 and second connecting magnet 65, torsional spring 422 drove side guard plate 7 and rotates, and side guard plate 7 and side guard rail 42 exist and be 145 contained angles, side guard plate 7 can support seat main part 4, so that there is space below seat main part 4, reach the purpose of protecting children.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.