Side anti-collision active protection type child safety seat

Abstract

The invention provides a side face anti-collision active protection type child safety seat, and relates to the technical field of child passenger restraint and protection, the side face anti-collision active protection type child safety seat comprises a child seat, and the top of an inner side cushion of the child seat is provided with a pressed fit groove; a magnetic suction cavity is formed in the cushion; a battery mounting groove is formed in the bottom end surface of the seat cushion; the device has a child detention warning function, through pressure detection and circuit linkage design, when a child still detents on a seat after an automobile flames out, a buzzer is automatically started to give out warning, the arrangement position of the buzzer corresponds to a main driving door, a driver can be reminded at the first time, and the safety of the driver is improved. According to the anti-detention child safety seat, the potential safety hazards of high temperature, oxygen deficit and the like caused by detention of a child in a vehicle due to forgetting are avoided, the blank of a traditional child safety seat on the anti-detention function is filled, and the problems that an existing child seat is generally not provided with a targeted detention warning function, and the key safety requirement for detention prevention has obvious function deficiency are solved.

Description

Technical Field

[0001] This invention relates to the field of child occupant restraint and protection technology, and in particular to a side-impact active protection child safety seat. Background Technology

[0002] With the continuous growth of car ownership, child passenger safety has received increasing social attention. Child safety seats, as core equipment for protecting children's safety, directly impact the life safety of child occupants through their protective performance and functional integrity. Currently, the child safety seat market primarily focuses on frontal and rear-end collision protection designs, using passive protective structures such as seatbelt restraint and seat cushioning to reduce the inertial impact on the child's body during a collision. However, significant shortcomings remain in side-impact protection. On the one hand, the side protection of existing child safety seats mostly relies on the structural strength of the seat shell itself and lacks an active deployment protection mechanism. When a side collision occurs, the external force is likely to directly act on the critical side parts of the child's body (such as the head and torso), which increases the risk of injury. On the other hand, safety accidents caused by children being forgotten in cars are frequent. These accidents often occur in the daily travel scenarios of parents, who may leave the car briefly while rushing to run errands or shopping, or due to work fatigue or distraction, leaving children alone in the car. Especially in extreme environments such as high temperatures in summer and low temperatures in winter, children are very likely to suffer from heatstroke, frostbite, or even death. Most existing child seats are not equipped with targeted warning functions for children being left behind. Most child seats only focus on passive restraint protection in the event of a collision, and there is a significant lack of functionality in addressing the key safety need of preventing children from being left behind. They cannot promptly remind parents when children are forgotten, resulting in serious shortcomings in the safety protection system. Summary of the Invention

[0003] This invention relates to a side-impact active protection child safety seat, which solves the problem that existing child seats generally do not have a targeted lingering warning function, resulting in a significant functional deficiency in the key safety requirement of preventing lingering.

[0004] This invention provides a side-impact active protection child safety seat, specifically comprising: a child seat, wherein the top of the inner seat cushion of the child seat has a pressure-fitting groove; the seat cushion has a magnetic cavity inside; the bottom surface of the seat cushion has a battery mounting slot, which is located to the left of the magnetic cavity, and an iron conductive sheet c is embedded between the battery mounting slot and the magnetic cavity; the bottom surface of the inner end of the pressure-fitting groove has an insertion port penetrating the bottom surface of the seat cushion, which is located to the left of the battery mounting slot, and the battery mounting slot and the magnetic cavity are connected... A conductive iron sheet b is embedded between the sockets, and the conductive iron sheet b corresponds to the conductive iron sheet c in position. A button battery is inserted into the battery mounting slot, and the positive and negative terminals of the button battery are in contact with the conductive iron sheet b and the conductive iron sheet c, respectively. A conductive iron sheet a is embedded in the left side of the inner end of the socket, and the conductive iron sheet a corresponds to the conductive iron sheet b in position. A conductive iron sheet e is provided inside the magnetic suction cavity, and a conductive arc-shaped protrusion b is fixedly installed on the left end face of the conductive iron sheet e.

[0005] Furthermore, the left end face of the iron conductive sheet e is fixedly connected to the left side face of the inner end of the magnetic suction cavity by a spring connector; in its natural state, the conductive arc-shaped protrusion b of the spring connector is in contact with the iron conductive sheet c.

[0006] Furthermore, a set of electromagnets is fixedly installed on the right side of the inner end of the magnetic suction cavity. The electromagnets are connected in parallel with the vehicle's power supply line and are linked with the vehicle's start and stop control logic.

[0007] Furthermore, in its natural state, the iron conductive sheet e is not in contact with the electromagnet; when the electromagnet is energized and activated, the electromagnet magnetically attracts the iron conductive sheet e, at which time the spring connector is in a stretched state, and the conductive arc-shaped protrusion b disengages from the contact state with the iron conductive sheet c.

[0008] Furthermore, a pressure pad is slidably inserted inside the pressure-fitting groove, and the thickness of the pressure pad is half the depth of the pressure-fitting groove; an iron conductive sheet d is fixedly installed on the bottom end face of the pressure pad, and the iron conductive sheet d is slidably inserted inside the socket, and a conductive arc-shaped protrusion a is fixedly installed on both the left and right end faces of the iron conductive sheet d.

[0009] Furthermore, a storage groove is provided at the four corners of the bottom end face of the pressure pad, and a spring support is fixedly installed inside each storage groove. The bottom end of the spring support is in contact with the bottom surface of the inner end of the pressure fitting groove. In the natural state, the top surface of the pressure pad and the top surface of the seat cushion are at the same horizontal plane.

[0010] Furthermore, in its natural state, the iron conductive sheet d and the conductive arc-shaped protrusion a do not contact the iron conductive sheet a and the iron conductive sheet b; when the bottom surface of the pressure pad block contacts the bottom surface of the inner end of the pressure fitting groove, the two conductive arc-shaped protrusions a contact the iron conductive sheet a and the iron conductive sheet b respectively.

[0011] Furthermore, it also includes a buzzer, the two pins of which are fixedly connected to iron conductive sheet a and iron conductive sheet e respectively by wires; the buzzer is installed on the top of the outside of the car, and its position corresponds to the position of the driver's side door of the car.

[0012] Furthermore, a locking protrusion is fixedly installed on both the left and right sides of the child seat, and a threaded hole is opened at the axial center of each locking protrusion; six protective covers are provided on the outer side of the child seat; the structural outline of the protective cover is adapted to the outer edge outline of the child seat, and the six protective covers have the same structure and their sizes decrease sequentially; each protective cover has a shaft hole at both ends, and the positions of the two shaft holes correspond to the positions of the two threaded holes; it also includes two screws, one end of which is threaded through the shaft hole and connected to the threaded hole, and the other end of the screw is fixedly installed with a knob; when the six protective covers are in the unfolded state, the six protective covers together form a full-coverage shielding protection for the left, right and front sides of the child seat.

[0013] This invention provides a side-impact active protection child safety seat, which has the following beneficial effects: This invention features active side-impact protection. Through six protective covers of decreasing size and adapted structure, it can be flexibly unfolded to form a fully enclosed protective barrier. When a car is involved in a side collision, the structural deformation of the multi-layered protective covers absorbs the impact force, effectively weakening the direct effect of external forces on the child seat and the child's body, and reducing the risk of injury caused by side collisions. The protective covers can be folded and stored without affecting getting in and out of the car or storing the seat, making it highly practical.

[0014] This invention features a child retention warning function. Through pressure detection and circuit linkage design, when a child remains in the seat after the car is turned off, a buzzer automatically activates to issue a warning. The buzzer is positioned corresponding to the driver's side door, providing immediate reminders to the driver and preventing safety hazards such as high temperatures and oxygen deprivation caused by a child being left in the car due to forgetfulness. This fills the gap in the anti-retention function of traditional child safety seats. The electromagnet is linked to the car's start / stop logic, automatically disconnecting the warning circuit during driving to avoid false alarms when a child is seated. After the engine is turned off, the circuit automatically closes, triggering the warning only when a child remains in the seat, requiring no manual operation. It is compatible with daily car use and has a high degree of intelligence. Moreover, the circuit triggering relies on the child's own weight pressing on the pressure pad, achieving circuit on / off through a mechanical structure, eliminating the need for additional sensors. The structure is simple and reliable, reducing the probability of failure. Furthermore, the button battery power supply is energy-efficient and has a long service life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0017] In the attached diagram: Figure 1 A schematic diagram of the main structure of the present invention is shown; Figure 2 A schematic diagram of the left-end isometric structure of the present invention is shown; Figure 3 A schematic diagram of the right-end isometric structure of the present invention is shown; Figure 4 This diagram shows the child seat, protective cover, and knob of the present invention in a disassembled state. Figure 5 The present invention is shown Figure 4 A magnified view of the structure at point A in the middle; Figure 6 A schematic diagram of the protective cover of the present invention in its deployed state is shown; Figure 7 This diagram shows a top isometric view of the pressure pad and child seat of the present invention in a disassembled state. Figure 8 This diagram shows a bottom isometric view of the pressure pad and child seat of the present invention in a disassembled state. Figure 9 The present invention is shown Figure 8 A magnified schematic diagram of the structure at point B in the middle; Figure 10 This diagram shows a partial enlarged cross-sectional view of the pressure-fitting groove portion of the present invention; Figure 11 The present invention is shown Figure 10 A schematic diagram of the structure of the pressure pad, the iron conductive sheet e, and the button battery in the removed state; Figure 12 A schematic diagram of the structure of the pressure pad, iron conductive sheet e, button battery and child seat cushion of the present invention in a disassembled state is shown. List of reference numerals 1. Child seat; 101. Locking protrusion; 102. Threaded hole; 103. Pressure-bearing groove; 104. Socket; 105. Battery mounting slot; 106. Electromagnet; 107. Magnetic cavity; 108. Iron conductive sheet a; 109. Iron conductive sheet b; 1010. Iron conductive sheet c; 2. Protective cover; 201. Shaft hole; 3. Buzzer; 4. Knob; 401. Screw; 5. Pressure pad; 501. Spring support; 502. Storage slot; 503. Iron conductive sheet d; 504. Conductive arc protrusion a; 6. Iron conductive sheet e; 601. Conductive arc protrusion b; 602. Spring connector; 7. Button battery. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example: Please refer to Figures 1 to 12 : This invention proposes a side-impact active protection child safety seat, comprising: a child seat 1, wherein a pressure-fitting groove 103 is formed on the top of the inner side of the seat cushion of the child seat 1; a magnetic suction cavity 107 is formed inside the seat cushion; a battery mounting slot 105 is formed on the bottom end face of the seat cushion, the battery mounting slot 105 is located to the left of the magnetic suction cavity 107, and an iron conductive sheet c1010 is embedded between the battery mounting slot 105 and the magnetic suction cavity 107; a through-hole is formed on the bottom surface of the inner end of the pressure-fitting groove 103. The socket 104 on the bottom end face is located on the left side of the battery mounting slot 105. An iron conductive plate b109 is embedded between the battery mounting slot 105 and the socket 104, with the iron conductive plate b109 corresponding to the iron conductive plate c1010. A button battery 7 is inserted into the battery mounting slot 105, with its positive and negative terminals in contact with the iron conductive plate b109 and the iron conductive plate c1010, respectively. A [missing information - likely a device or component] is embedded on the left side of the inner end of the socket 104. A block of iron conductive sheet a108 is provided, and the positions of iron conductive sheet a108 and iron conductive sheet b109 are corresponding; an iron conductive sheet e6 is provided inside the magnetic suction cavity 107, and a conductive arc-shaped protrusion b601 is fixedly installed on the left end face of the iron conductive sheet e6; the left end face of the iron conductive sheet e6 is fixedly connected to the left side face of the inner end of the magnetic suction cavity 107 by a spring connector 602; in the natural state, the conductive arc-shaped protrusion b601 is in contact with the iron conductive sheet c1010; the magnetic suction cavity A set of electromagnets 106 is fixedly installed on the right side of the inner end of 107. The electromagnets 106 are connected in parallel with the vehicle's power supply line and are linked with the vehicle's start and stop control logic. In the natural state, the iron conductive sheet e6 of the spring connector 602 is not in contact with the electromagnets 106. When the electromagnets 106 are energized and started, the electromagnets 106 magnetically attract the iron conductive sheet e6. At this time, the spring connector 602 is in a stretched state, and the conductive arc-shaped protrusion b601 is separated from the contact state with the iron conductive sheet c1010.

[0020] A pressure pad 5 is slidably inserted into the pressure-fitting groove 103, and the thickness of the pressure pad 5 is half the depth of the pressure-fitting groove 103. A conductive iron sheet d503 is fixedly installed on the bottom surface of the pressure pad 5, and the conductive iron sheet d503 is slidably inserted into the socket 104. A conductive arc-shaped protrusion a504 is fixedly installed on the left and right ends of the conductive iron sheet d503. A storage groove 502 is opened at the four corners of the bottom surface of the pressure pad 5, and a spring support 501 is fixedly installed inside each storage groove 502. The bottom end of the spring support 501 is in contact with the bottom surface of the inner end of the pressure-fitting groove 103. The spring support 501 is in a natural state. In its normal state, the top surface of the pressure pad 5 is at the same level as the top surface of the seat cushion; in its natural state, the iron conductive sheet d503 and the conductive arc-shaped protrusion a504 do not contact the iron conductive sheets a108 and b109; when the bottom surface of the pressure pad 5 contacts the bottom surface of the inner end of the pressure fitting groove 103, the two conductive arc-shaped protrusions a504 contact the iron conductive sheets a108 and b109 respectively; it also includes a buzzer 3, the two pins of the buzzer 3 are fixedly connected to the iron conductive sheets a108 and e6 respectively through wires; the buzzer 3 is installed on the top of the outside of the car, and its position corresponds to the position of the driver's side door of the car.

[0021] The child seat 1 has a locking protrusion 101 fixedly installed on both sides, and each locking protrusion 101 has a threaded hole 102 at its axial center. The child seat 1 is equipped with six protective covers 2 on its outer side. The structural outline of the protective covers 2 is adapted to the outer edge outline of the child seat 1, and the six protective covers 2 have the same structure and their sizes decrease sequentially. The two ends of the protective covers 2 are provided with shaft holes 201, and the positions of the two shaft holes 201 correspond to the positions of the two threaded holes 102. It also includes two screws 401. One end of the screws 401 passes through the shaft holes 201 and is threadedly connected to the threaded holes 102. The other end of the screws 401 is fixedly installed with a knob 4. When the six protective covers 2 are in the unfolded state, the six protective covers 2 together form a full-coverage shield and protection for the left, right and front sides of the child seat 1.

[0022] The working principle of this embodiment: When the driver starts the car, the electromagnet 106, which is connected in parallel with the car's power supply line and is linked to the start / stop logic, is simultaneously energized. After being energized, the electromagnet 106 generates a strong magnetic force, which forms a magnetic attraction force on the iron conductive sheet e6 inside the magnetic suction cavity 107. Since the iron conductive sheet e6 is fixedly connected to the left side of the inner end of the magnetic suction cavity 107 through the spring connector 602, under the magnetic attraction force, the iron conductive sheet e6 overcomes the elastic tension of the spring connector 602 and moves to the right until it contacts the electromagnet 106. At this time, the spring connector 602 is in a fully stretched state. As the iron conductive sheet e6 moves to the right, the conductive arc-shaped protrusion b601 fixed on its left end face simultaneously disengages from the contact with the iron conductive sheet c1010. When the driver places the child in the child seat 1, the child's weight is applied to the top of the pressure pad 5. Under downward pressure, the pressure pad 5 compresses the spring support 501, causing it to slide downwards along the pressure-fitting groove 103 until the bottom surface of the pressure pad 5 is completely in contact with the inner bottom surface of the pressure-fitting groove 103. During this process, the iron conductive sheet d503 on the bottom surface of the pressure pad 5 moves downwards along the socket 104, and finally, the conductive arc-shaped protrusions a504 at its left and right ends respectively contact the iron conductive sheet a1 inside the socket 104. 08. The iron conductive piece b109 between the battery mounting slot 105 and the socket 104 is in contact. However, since the conductive arc protrusion b601 has detached from the iron conductive piece c1010 at this time, the circuit formed by the button battery 7, iron conductive piece b109, conductive arc protrusion a504, iron conductive piece d503, iron conductive piece a108, buzzer 3, iron conductive piece e6, conductive arc protrusion b601, and iron conductive piece c1010 is in an open state. No current flows through the buzzer 3, thus avoiding false alarms during driving. When the driver turns off the car, the car's power supply line is cut off, and the electromagnet 106 loses power simultaneously, and its magnetic attraction force disappears. At this time, the stretched spring connector 602 releases elastic potential energy, pulling the iron conductive sheet e6 to the left to reset until the spring connector 602 returns to its natural state. During this process, the conductive arc-shaped protrusion b601 on the left end face of the iron conductive sheet e6 re-makes close contact with the iron conductive sheet c1010, completing the closure of the warning circuit. If the child remains in the child seat 1, the pressure pad 5 remains under pressure, and the contact between the conductive arc-shaped protrusion a504 and the iron conductive sheets a108 and b109 remains unchanged. At this time, the circuit consisting of the button battery 7, the iron conductive sheet b109, the conductive arc-shaped protrusion a504, the iron conductive sheet d503, the iron conductive sheet a108, the buzzer 3, the iron conductive sheet e6, the conductive arc-shaped protrusion b601, and the iron conductive sheet c1010 is connected, forming a complete power supply circuit. The buzzer 3 starts after receiving power and emits a continuous buzzing warning. Because the buzzer 3 is... Installed on the top of the car exterior, corresponding to the driver's side door, the alarm can be detected immediately after the driver gets out of the car, reminding them that the child is still in the seat and avoiding the safety hazards of leaving the child in the car due to forgetfulness (such as the risk of high temperature caused by leaving the child in the car in summer). If the child has been removed from the seat, the pressure pad 5 returns to its original position under the elastic action of the spring support 501, and the iron conductive sheet d503 and the conductive arc-shaped protrusion a504 disengage from the iron conductive sheet a108 and the iron conductive sheet b109. Even if the circuit is closed, the buzzer 3 will not work because there is no current path, and it will not affect the driver's normal locking of the car and departure. After the child is seated and the safety restraints are fastened, the driver can adjust the protective cover 2 as needed. First, loosen the knob 4, causing the screw 401 to rotate in the opposite direction along the threaded hole 102 of the locking protrusion 101, thus releasing the knob 4 from pressing and fixing the protective cover 2. Then, flip the six protective covers 2 in sequence, using the shaft holes 201 at both ends of the protective cover 2 to rotate around the screw 401 to the unfolded position, so that the six protective covers 2 are stacked according to size levels, together forming a full-coverage shield for the left, right, and front sides of the child seat 1. After the protective cover 2 is adjusted, rotate the screw 401 in the forward direction along the threaded hole 102 until the knob 4 is aligned with the outermost... The side shields 2 fit tightly, and the position of all shields 2 is fixed by the threaded locking force to prevent the shields 2 from shifting due to vibration during driving. At this time, the multi-layer shields 2 form a buffer protection barrier. When the car is involved in a side collision, the shields 2 can absorb the impact force through their own structural deformation, reducing the direct impact of external force on the child seat 1 and the child's body, and achieving active side collision protection. When collision protection is not needed (such as when getting in and out of the car or when the seat is stored), the knob 4 can be loosened again to flip and fold the six shields 2 in the opposite direction, so that they are behind the child seat 1, and then the screw 401 is tightened to fix them, without taking up extra space.

Claims

1. A side impact collision active protection type child safety seat comprising a child seat (1), characterized in that, The inner side cushion top of the child seat (1) is provided with a pressure-fitted recess (103); the inner side cushion is provided with a magnetic attraction cavity (107); the bottom end surface of the inner side cushion is provided with a battery mounting groove (105), the battery mounting groove (105) is located on the left side of the magnetic attraction cavity (107), and a piece of iron conductive sheet c (1010) is embedded between the battery mounting groove (105) and the magnetic attraction cavity (107); the inner end bottom surface of the pressure-fitted recess (103) is provided with a socket (104) penetrating the bottom end surface of the inner side cushion, the socket (104) is located on the left side of the battery mounting groove (105), and a piece of iron conductive sheet b (109) is embedded between the battery mounting groove (105) and the socket (104), the iron conductive sheet b (109) corresponds to the position of the iron conductive sheet c (1010); a piece of button cell (7) is inserted into the battery mounting groove (105), the positive and negative electrodes of the button cell (7) are in contact with the iron conductive sheet b (109) and the iron conductive sheet c (1010) respectively; an iron conductive sheet a (108) is embedded on the inner end left side surface of the socket (104), and the iron conductive sheet a (108) corresponds to the position of the iron conductive sheet b (109); the magnetic attraction cavity (107) is provided with an iron conductive sheet e (6), and the left end surface of the iron conductive sheet e (6) is fixedly installed with a conductive arc-shaped protrusion b (601).

2. A side impact collision active protection type child safety seat according to claim 1, characterized in that, The left end surface of the iron conductive sheet e (6) and the inner end left side surface of the magnetic attraction cavity (107) are fixedly connected through a spring connecting piece (602); in the natural state of the spring connecting piece (602), the conductive arc-shaped protrusion b (601) is in contact with the iron conductive sheet c (1010).

3. A side impact collision active protection type child safety seat according to claim 2, characterized in that, The inner end right side surface of the magnetic attraction cavity (107) is fixedly installed with a group of electromagnets (106), the electromagnets (106) are arranged in parallel with the automobile power supply circuit, and are linked with the start and shutdown control logic of the automobile.

4. A side impact collision active protection type child safety seat according to claim 3, characterized in that, In the natural state of the spring connecting piece (602), the iron conductive sheet e (6) is not in contact with the electromagnet (106); when the electromagnet (106) is energized and started, the electromagnet (106) magnetically attracts the iron conductive sheet e (6), at this time the spring connecting piece (602) is in a stretched state, and the conductive arc-shaped protrusion b (601) is separated from the iron conductive sheet c (1010).

5. A side impact collision active protection type child safety seat according to claim 4, characterized in that, A pressure pad (5) is slidably inserted into the pressure-fitted recess (103), the thickness of the pressure pad (5) is half of the depth of the pressure-fitted recess (103); the bottom end surface of the pressure pad (5) is fixedly installed with an iron conductive sheet d (503), the iron conductive sheet d (503) is slidably inserted into the socket (104), and the left end surface and the right end surface of the iron conductive sheet d (503) are fixedly installed with a conductive arc-shaped protrusion a (504).

6. A side impact collision active protection type child safety seat according to claim 5, characterized in that The bottom end face of the pressure receiving pad (5) is provided with a receiving groove (502) adjacent to the corner part of the four edges, and a spring supporting piece (501) is fixedly installed in each receiving groove (502), and the bottom end of the spring supporting piece (501) is in contact with the inner end bottom surface of the pressure receiving groove (103); in the natural state of the spring supporting piece (501), the top end face of the pressure receiving pad (5) is in the same horizontal plane as the top end face of the cushion.

7. A side impact collision active protection type child safety seat according to claim 6, characterized in that In the natural state of the spring supporting piece (501), the ferrous conductive sheet d (503) and the conductive arc-shaped protrusion a (504) are not in contact with the ferrous conductive sheet a (108) and the ferrous conductive sheet b (109); when the bottom end face of the pressure receiving pad (5) is in contact with the inner end bottom surface of the pressure receiving groove (103), at this time, the two conductive arc-shaped protrusions a (504) are respectively in contact with the ferrous conductive sheet a (108) and the ferrous conductive sheet b (109).

8. A side impact collision active protection type child safety seat according to claim 7, characterized in that The buzzer (3) is also included, and the two pins of the buzzer (3) are fixedly connected with the ferrous conductive sheet a (108) and the ferrous conductive sheet e (6) through wires; the buzzer (3) is installed on the top of the outside of the automobile, and the layout position corresponds to the position of the main driver door of the automobile.

9. A side impact collision active protection type child safety seat according to claim 8, characterized in that The left and right sides of the child seat (1) are fixedly installed with a locking matching protruding column (101), and a threaded hole (102) is formed in the axial position of each locking matching protruding column (101); six protective covers (2) are provided on the outside of the child seat (1); the structural contour of the protective cover (2) is matched with the outside edge contour of the child seat (1), and the structures of the six protective covers (2) are consistent, and the sizes are arranged in a decreasing order; the both ends of the protective cover (2) are provided with shaft holes (201), and the positions of the two shaft holes (201) correspond to the positions of the two threaded holes (102); two screw rods (401) are also included, one end of the screw rod (401) penetrates through the shaft hole (201) and is threadedly connected with the threaded hole (102), and the other end of the screw rod (401) is fixedly installed with a knob (4); when the six protective covers (2) are in the unfolded state, the six protective covers (2) jointly form a full coverage shielding protection for the left and right sides and the front side of the child seat (1).

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