Child safety seat

Abstract

The utility model discloses a child safety seat, and particularly relates to the child seat field, the child safety seat comprises a seat body and an adult seat back rotatably connected with one end of the seat body, the middle part of the seat body is provided with a cylindrical cavity, a mounting cylinder is slidably placed in the center of the cylindrical cavity, the mounting cylinder is coaxially sleeved with a plurality of annular buffer airbags, and the annular buffer airbags are arranged in the cylindrical cavity. Annular buffer air bags are arranged in the cylindrical cavity, coaxial annular plates are placed between the adjacent annular buffer air bags, the annular buffer air bag arranged on the outermost layer is attached to the annular side wall of the cylindrical cavity, the mounting barrel is in threaded connection with a stud base, and the top of the stud base is fixedly connected with a child safety seat barrel; the side wall of the seat is provided with a plurality of exhaust holes communicating with the cylindrical cavity, fixing mechanisms fixedly connected with the stud bases in an inserted mode are installed at the four corners of the seat, the fixing mechanisms are provided with transverse stress threshold values, and the child safety seat benefits from dispersion and conduction of impact force, so that the probability that a child is injured is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of children's seats, and particularly relates to a children's safety seat. Background Art

[0002] A children's safety seat is a car seat specially designed for children, aiming to protect children from injuries in traffic accidents. These seats have different types and specifications according to the age, weight and height of children to ensure the best safety performance.

[0003] Existing children's safety seats are usually rigidly connected to car seats. When a car collision occurs, only the flexible materials and seat belts of the children's safety seats themselves are relied on for buffering, and there is still a certain probability of children being injured. Therefore, a new type of children's safety seat is needed. Summary of the Utility Model

[0004] To solve the above problems, the utility model discloses a children's safety seat.

[0005] To achieve the above object, the technical solution of the utility model is as follows:

[0006] A children's safety seat includes a seat, and an adult backrest rotatably connected to one end of the seat. A cylindrical cavity is opened in the middle of the seat, and an installation cylinder is slidably placed at the center of the cylindrical cavity. The installation cylinder is coaxially sleeved with a plurality of annular buffer air bags, and annular plates coaxial with the center are placed between adjacent annular buffer air bags. The annular buffer air bag arranged on the outermost layer is attached to the annular side wall of the cylindrical cavity. The installation cylinder is threadedly connected with a stud seat, and a children's safety chair cylinder is fixedly connected to the top of the stud seat. A plurality of exhaust holes communicating with the cylindrical cavity are opened on the side wall of the seat. Fixing mechanisms inserted and fixed with the stud seat are installed at the four corners of the seat, and the fixing mechanisms are provided with a lateral force threshold.

[0007] As a preferred technical solution of the utility model, installation grooves are opened at the four corners of the top of the seat. Each group of fixing mechanisms includes: a plug inserted and installed up and down in the installation groove. A first spring is connected to the bottom of the plug, and the bottom of the first spring abuts against the bottom wall of the installation groove. The round head end of the plug is inserted into the stud seat, and the top surface of the flat head end of the plug is flush with the top surface of the seat. A movable pin is horizontally slidably installed on one side of the flat head end of the plug.

[0008] As a preferred technical solution of the utility model, the round head end of the plug is hollow, and an annular groove for setting the lateral force threshold is opened on the outer side wall of the round head end of the plug, and the annular groove is flush with the top surface of the seat.

[0009] As a preferred technical solution of the present utility model, a second spring is connected to the end of the movable pin away from the connector, and the end of the second spring away from the movable pin abuts against the side wall of the installation groove. An inner groove is formed by a protrusion on the top of the movable pin.

[0010] As a preferred technical solution of the present utility model, starting from the axis of the installation cylinder, the wall thickness of several annular buffer air bags becomes thinner as the distance from the axis of the installation cylinder increases.

[0011] As a preferred technical solution of the present utility model, several exhaust holes are evenly distributed on the four vertical side walls of the seat.

[0012] As a preferred technical solution of the present utility model, a straight groove is formed at the top edge of the seat, and a magnetic strip is embedded in each straight groove. An adult seat cushion is adapted to the top of the seat, and a magnetic strip adapted to the magnetic strip in the straight groove is fixedly connected to the bottom surface of the adult seat cushion.

[0013] The beneficial effects of the present utility model are as follows:

[0014] First, when a child is sitting normally in the child safety chair cylinder, the four fixing mechanisms respectively fix the four corners of the stud base. After a vehicle collision, when the lateral force generated by the stud base on the fixing mechanism is greater than the lateral force threshold of the fixing mechanism, the round head end of the connector breaks along the annular groove, so that the installation cylinder and the stud base, together with the child safety chair cylinder, move in a buffered manner. Among them, several annular buffer air bags are used to buffer the moving installation cylinder, and the annular plates between adjacent annular buffer air bags conduct the force dispersion from the installation cylinder outward, thereby reducing the impact force received by the child. Thanks to the dispersion and conduction of the impact force, the probability of the child being injured is reduced.

[0015] Second, when the annular buffer air bag is subjected to excessive force, the annular buffer air bags with thinner wall thickness start to break in sequence to consume energy, and the air generated by the breakage is discharged from the exhaust holes. Thanks to the insurance setting of the breakage of the annular buffer air bag, the probability of the child being injured is further reduced.

[0016] Third, when an adult is sitting, the connection between the fixing mechanism and the stud base is disconnected, the stud base and the child safety chair cylinder are removed, and an adult seat cushion is laid on the top of the seat. Thanks to the switchable design of the child riding mode and the adult riding mode, the versatility of the overall seat is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of installing a child safety chair cylinder according to an embodiment of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of installing an adult seat cushion according to an embodiment of the present utility model;

[0019] Figure 3 Structural schematic diagram of the seat, adult backrest, installation cylinder, fixing mechanism and magnetic strip in the embodiment of the present utility model;

[0020] Figure 4 Structural schematic diagram of the magnetic strip and adult seat cushion in the embodiment of the present utility model;

[0021] Figure 5 Structural schematic diagram of the stud base and child safety chair cylinder in the embodiment of the present utility model;

[0022] Figure 6 Cross-sectional view of the seat, installation cylinder, annular buffer airbag, annular plate, fixing mechanism and magnetic strip in the embodiment of the present utility model;

[0023] Figure 7 Cross-sectional view of the seat and fixing mechanism in the embodiment of the present utility model;

[0024] Figure 8 In the embodiment of the present utility model Figure 7 Enlarged view of part A;

[0025] Figure 9 Structural schematic diagram of the plug connector in the embodiment of the present utility model.

[0026] List of drawing reference numerals:

[0027] 1, seat; 101, exhaust hole; 102, linear groove; 103, installation groove; 104, cylindrical cavity;

[0028] 2, adult backrest; 3, installation cylinder; 4, annular buffer airbag; 5, annular plate; 6, stud base; 7, child safety chair cylinder;

[0029] 8, fixing mechanism; 801, plug connector; 802, first spring; 803, movable pin; 804, second spring;

[0030] 9, magnetic strip; 10, adult seat cushion. Detailed implementation manners

[0031] The present utility model will be further clarified below in conjunction with the drawings and detailed implementation manners. It should be understood that the following detailed implementation manners are only used to illustrate the present utility model and not to limit the scope of the present utility model.

[0032] Please refer to Figure 1-9, A child safety seat, comprising a seat 1 and an adult backrest 2 rotatably connected to one end of the seat 1. A cylindrical cavity 104 is formed in the middle of the seat 1, and an installation cylinder 3 is slidably placed at the center of the cylindrical cavity 104. The installation cylinder 3 cannot be taken out from the top opening of the cylindrical cavity 104. The upper surface of the installation cylinder 3 fits the inner cavity top wall of the cylindrical cavity 104, and the installation cylinder 3 can only slide horizontally inside the cylindrical cavity 104. A plurality of annular buffer airbags 4 are coaxially sleeved on the installation cylinder 3, and coaxial annular plates 5 are placed between adjacent annular buffer airbags 4. The annular plate 5 is used to spread and conduct the force of the internal annular buffer airbag 4 to the external annular buffer airbag 4. The outermost annular buffer airbag 4 fits the annular side wall of the cylindrical cavity 104. Starting from the axis of the installation cylinder 3, the wall thickness of the plurality of annular buffer airbags 4 becomes thinner as the distance from the axis of the installation cylinder 3 increases. When the force is too large, the annular buffer airbags 4 with thinner wall thickness start to rupture in sequence to consume energy, and the air generated by the rupture is discharged from the exhaust holes 101. The installation cylinder 3 is threadedly connected to a stud base 6, and a child safety chair cylinder 7 is fixedly connected to the top of the stud base 6. A plurality of exhaust holes 101 communicating with the cylindrical cavity 104 are formed in the side wall of the seat 1. The plurality of exhaust holes 101 are evenly distributed on the four vertical side walls of the seat 1. Fixing mechanisms 8 inserted and fixed to the stud base 6 are installed at the four corners of the seat 1, and the fixing mechanisms 8 are provided with a lateral force threshold. During normal riding, the four fixing mechanisms 8 respectively fix the four corners of the stud base 6. When a collision occurs, the lateral force generated by the stud base 6 on the fixing mechanisms 8 is greater than the lateral force threshold of the fixing mechanisms 8, and the four fixing mechanisms 8 disconnect the lateral restraint on the stud base 6. The stud base 6 displaces in the collision direction, and a plurality of annular buffer airbags 4 are used for buffering, and the annular plates 5 between adjacent annular buffer airbags 4 disperse the force from the installation cylinder 3 and conduct it outward.

[0033] The child safety chair cylinder 7 is wrapped with a flexible material and is provided with a child safety belt, which is not shown in the attached drawings of the child safety belt instruction manual. The annular buffer airbag 4 presses against the outer wall of the installation cylinder 3, making it difficult for the installation cylinder 3 to rotate under a small force. There is a certain gap between the threads of the installation cylinder 3 and the stud base 6, so that the stud base 6 can be screwed and rotated to fit the seat 1 without the installation cylinder 3 rotating.

[0034] Installation grooves 103 are formed at the four corners of the top of the seat 1. Each fixing mechanism 8 includes: a plug connector 801 slidably installed up and down in the installation groove 103. A first spring 802 is connected to the bottom of the plug connector 801, and the bottom of the first spring 802 abuts against the bottom wall of the installation groove 103. The round head end of the plug connector 801 is inserted into the stud base 6, and the top surface of the flat head end of the plug connector 801 is flush with the top surface of the seat 1. A movable pin 803 is horizontally slidably installed on one side of the flat head end of the plug connector 801. Under the elastic force of the first spring 802, the round head end of the plug connector 801 is inserted upward into the round hole of the stud base 6.

[0035] The round head end of the connector 801 is hollow. An annular groove for setting the lateral force threshold is provided on the outer side wall of the round head end of the connector 801, and the annular groove is flush with the top surface of the seat 1. The design of the hollow round head end of the connector 801 and the annular groove is such that when the lateral force generated by the stud base 6 on the fixing mechanism 8 is greater than the lateral force threshold of the fixing mechanism 8, the round head end of the connector 801 breaks along the annular groove, causing the mounting cylinder 3, the stud base 6, and the child safety chair cylinder 7 to move in a buffered manner.

[0036] One end of the movable pin 803 away from the connector 801 is connected to a second spring 804, and one end of the second spring 804 away from the movable pin 803 abuts against the side wall of the mounting groove 103. An inner groove is provided on the top protrusion of the movable pin 803. When the flat head end of the connector 801 is completely pressed down, the round head end of the connector 801 is completely retracted into the mounting groove 103, and the movable pin 803 pops out under the elastic force of the second spring 804 to block the upward movement of the flat head end of the connector 801, so that the round head end of the connector 801 remains completely retracted into the mounting groove 103. The inner groove of the movable pin 803 is used for pulling the movable pin 803 to move with a finger. When the finger pulls the movable pin 803 to move away from the connector 801, the connector 801 pops up, and the round head end of the connector 801 is inserted upward into the round hole of the stud base 6.

[0037] Linear grooves 102 are provided at the top edge of the seat 1, and a magnetic strip 9 is embedded in each linear groove 102. An adult seat cushion 10 is adapted to the top of the seat 1, and a magnetic strip 9 adapted to the magnetic strip 9 in the linear groove 102 is fixedly connected to the bottom surface of the adult seat cushion 10. The connection between the fixing mechanism 8 and the stud base 6 is disconnected, the stud base 6 and the child safety chair cylinder 7 are removed, and the adult seat cushion 10 is laid on the top of the seat 1. The magnetic strip 9 on the bottom surface of the adult seat cushion 10 is attracted to the magnetic strip 9 in the linear groove 102, and the magnetic strip 9 on the bottom surface of the adult seat cushion 10 is snapped into the linear groove 102.

[0038] Working principle:

[0039] When a child is sitting normally in the child safety chair cylinder 7, the four fixing mechanisms 8 respectively fix the four corners of the stud base 6 to maintain the stability of the child safety chair cylinder 7 during riding. When the lateral force generated by the stud base 6 on the fixing mechanism 8 is greater than the lateral force threshold of the fixing mechanism 8, the round head end of the connector 801 breaks along the annular groove, causing the mounting cylinder 3, the stud base 6, and the child safety chair cylinder 7 to move in a buffered manner. Among them, several annular buffer airbags 4 are used to buffer the moving mounting cylinder 3, and the annular plates 5 between adjacent annular buffer airbags 4 conduct the force received from the mounting cylinder 3 outwardly in a dispersed manner, thereby reducing the impact force received by the child. When the annular buffer airbag 4 is subjected to too much force, the annular buffer airbag 4 with a thin wall starts to break in sequence to consume energy, and the air generated by the break is discharged from the exhaust hole 101;

[0040] When an adult rides, disconnect the connection between the fixing mechanism 8 and the stud base 6, remove the stud base 6 and the child safety chair tube 7, and lay an adult cushion 10 on the top of the chair seat 1.

[0041] It should be noted that the above content only illustrates the technical idea of the present utility model, and the protection scope of the present utility model cannot be limited thereby. For those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements all fall within the protection scope of the claims of the present utility model.

Claims

1. A child safety seat, comprising a seat (1), and an adult backrest (2) rotatably connected to one end of the seat (1), characterized in that, A cylindrical cavity (104) is formed in the middle of the seat (1), and an installation cylinder (3) is slidably placed at the center of the cylindrical cavity (104). A plurality of annular buffer air bags (4) are coaxially sleeved on the installation cylinder (3), and annular plates (5) with the same axis are placed between adjacent annular buffer air bags (4). The outermost annular buffer air bag (4) is attached to the annular side wall of the cylindrical cavity (104). The installation cylinder (3) is threadedly connected with a stud base (6), and a child safety chair cylinder (7) is fixedly connected to the top of the stud base (6). A plurality of exhaust holes (101) communicating with the cylindrical cavity (104) are formed in the side wall of the seat (1). Fixing mechanisms (8) inserted and fixed with the stud base (6) are installed at the four corners of the seat (1), and the fixing mechanisms (8) are provided with a lateral force threshold value.

2. A child safety seat according to claim 1, characterized in that, Installation grooves (103) are formed at the four corners of the top of the seat (1). Each fixing mechanism (8) includes: a plug connector (801) slidably installed up and down in the installation groove (103). A first spring (802) is connected to the bottom of the plug connector (801), and the bottom of the first spring (802) abuts against the bottom wall of the installation groove (103). The round head end of the plug connector (801) is inserted into the stud base (6), and the top surface of the flat head end of the plug connector (801) is flush with the top surface of the seat (1). A movable pin (803) is horizontally slidably installed on one side of the flat head end of the plug connector (801).

3. A child safety seat according to claim 2, characterized in that, The round head end of the plug connector (801) is hollow, and an annular groove for setting the lateral force threshold value is formed on the outer side wall of the round head end of the plug connector (801), and the annular groove is flush with the top surface of the seat (1).

4. A child safety seat according to claim 2, characterized in that, A second spring (804) is connected to the end of the movable pin (803) away from the plug connector (801), and the end of the second spring (804) away from the movable pin (803) abuts against the side wall of the installation groove (103). An inner groove is formed by the protrusion on the top of the movable pin (803).

5. A child safety seat according to claim 1, characterized in that, Starting from the axis of the installation cylinder (3), the wall thickness of the plurality of annular buffer air bags (4) becomes thinner as the distance from the axis of the installation cylinder (3) increases.

6. A child safety seat according to claim 1, characterized in that, The plurality of exhaust holes (101) are evenly distributed on the four vertical side walls of the seat (1).

7. A child safety seat according to claim 1, wherein, A straight groove (102) is formed at the top edge of the seat (1), and a magnetic strip (9) is embedded in each straight groove (102). An adult seat cushion (10) is adapted to the top of the seat (1), and a magnetic strip (9) adapted to the magnetic strip (9) in the straight groove (102) is fixedly connected to the bottom surface of the adult seat cushion (10).

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