Child safety seats

Abstract

The invention discloses a child safety seat, comprising a passive protection device, two controllers, a wire whose two ends are respectively connected to the two controllers, and a control circuit unit whose two ends are respectively connected to the two controllers. The passive protection device comprises a triggered device, whose two ends are respectively connected to the two controllers in a detachable manner, and each controller has a first working state and a second working state that can be switched to each other. When the two controllers are in the first working state, the two ends of the wire are respectively connected to the two ends of the triggered device through the two controllers, and the passive protection device is in a closed state; when the two controllers are in the second working state, the two controllers respectively disconnect the two ends of the wire from the two ends of the triggered device, and the two ends of the control circuit unit are respectively connected to the two ends of the triggered device through the two controllers, and the passive protection device is in a to-be-triggered state.

Description

Technical Field

[0001] The invention relates to a child safety seat. Background Art

[0002] Child safety seats are used to protect children's riding safety, including a seat body and a restraining mechanism connected to the seat body. When an actual collision occurs, due to the inertial force caused by the strong impact force, even if the child is restrained by the restraining mechanism (restraint belt or block) on the child safety seat, the child's body will still lean forward. On the one hand, the child's body will often be strongly compressed and injured due to the force of the restraining mechanism. On the other hand, the child's body may hit other objects in the car due to the excessive forward movement of the child's body, causing injury to the child. Therefore, some child car seats are equipped with airbags to protect children when the airbags are inflated and collided when a collision occurs. However, the airbag system in the prior art does not have an anti-misfire device. If a collision occurs when the child safety seat is not used normally (such as when the child is not sitting, when the child is placed in the child safety seat, or when the child is getting out of the child safety seat), the airbag will still inflate and pop out. Summary of the invention

[0003] In order to solve the above problems, an object of the present invention is to provide a child safety seat.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: a child safety seat, including a passive protection device, two controllers, a wire whose two ends are respectively connected to the two controllers, and a control circuit unit whose two ends are respectively connected to the two controllers in a detachable manner, the passive protection device includes a triggered device, the two ends of the triggered device are respectively connected to the two controllers, each controller has a first working state and a second working state that can be switched to each other,

[0005] When both controllers are in the first working state, the two ends of the wire are connected to the two ends of the triggered device through the two controllers, and the passive protection device is in a closed state; when both controllers are in the second working state, the two controllers disconnect the two ends of the wire from the two ends of the triggered device, and the two ends of the control circuit unit are connected to the two ends of the triggered device through the two controllers, and the passive protection device is in a waiting state.

[0006] Furthermore, the child safety seat includes a seat body and a restraining mechanism, each controller includes a connector connected to the restraining mechanism, two ends of the wire are respectively connected to the connectors in the two controllers, two ends of the triggered device are connected to the connectors in the two controllers, two sockets corresponding to the two controllers are provided on the seat body, two ends of the control circuit unit are respectively connected to the sockets in the two controllers, when the connector in the controller is separated from the corresponding socket, the controller is in a first working state, and when the connector in the controller is connected to the corresponding socket, the controller is in a second working state.

[0007] Furthermore, each controller also includes a sliding member slidably connected to the connector and having two working positions. When the controller is in a first working state, the sliding member in the controller is in the first working position, and when the controller is in a second working state, the sliding member in the controller is in the second working position; each controller also includes a state switching mechanism arranged between the connector and the sliding member.

[0008] Furthermore, an elastic member is provided between the plug-in member and the sliding member, which enables the sliding member to slide from the second working position to the first working position.

[0009] Furthermore, the socket has a blocking portion which can push the sliding member from the first working position to the second working position when the plug-in member is inserted.

[0010] Optionally, the state switching mechanism includes a first conductor and a second conductor arranged on the connector, with a gap between the first conductor and the second conductor, and two ends of the triggered device are respectively connected to the first conductors in the two controllers.

[0011] The state switching mechanism also includes a third conductor and a fourth conductor arranged on the sliding member, a gap is provided between the third conductor and the fourth conductor, and two ends of the wire are respectively connected to the third conductors in the two controllers.

[0012] When the controller is in the first working state, the first conductor and the third conductor in the controller are in contact with each other, so that the end of the triggered device connected to the controller is connected to the end of the wire; when the controller is in the second working state, the first conductor and the second conductor in the controller are conductively connected by contacting the fourth conductor and the second conductor in the controller is connected to the end of the control circuit unit connected to the corresponding socket, so that the end of the triggered device connected to the controller is connected to the end of the control circuit unit, and the first conductor and the second conductor in the controller are separated from the third conductor, so that the end of the triggered device connected to the controller and the end of the control circuit unit are disconnected from the end of the wire.

[0013] Preferably, the sliding member is made of insulating material, and when the controller is in the first working state, the sliding member in the controller covers the first conductor and the second conductor in the same controller.

[0014] Optionally, the state switching mechanism includes a switch disposed on the connector, two ends of the wire are respectively connected to switches in two controllers, and two ends of the triggered device are respectively connected to switches in two controllers, and the state switching mechanism also includes a driving part disposed on the sliding member and capable of toggling the switch to open and close.

[0015] When the controller is in the first working state, the switch in the controller is closed, so that the end of the triggered device connected to the controller is connected to the end of the wire. When both controllers are in the second working state, the switch in the controller is opened, so that the end of the triggered device connected to the controller is disconnected from the end of the wire.

[0016] Preferably, a fifth conductor is provided on the connector, and the two ends of the triggered device are respectively connected to the fifth conductors in the two controllers. When the litigation controller is in the second working state, the fifth conductor in the controller is connected to the end of the control circuit unit connected to the corresponding socket.

[0017] Preferably, the sliding member is made of insulating material, and when the controller is in the first working state, the sliding member in the controller covers the fifth conductor in the same controller.

[0018] Furthermore, the restraining mechanism is a block, and the passive protection device is arranged in the block. When the block is connected to the seat body, the two controllers are in the second working state; when the block is disengaged from the seat body, the two controllers are in the first working state.

[0019] Furthermore, the control circuit unit has a power supply, and when both controllers are in the second working state, the triggered device and the control circuit unit form a closed loop.

[0020] Due to the adoption of the above technical scheme, the child safety seat of the present invention can switch the two controllers to the first working state when the child safety seat is not in normal use. Due to the connection of the wires, a completely closed protection circuit is formed between the two controllers and the triggered device, thereby preventing the passive protection device from accidentally exploding when the child safety seat is not in normal use. When the child safety seat is in normal use, the two controllers can be switched to the second working state, the wires are disconnected from the passive protection device, and the control circuit unit and the triggered device can form a new closed circuit, thereby achieving control in the event of a collision, so that the passive protection device is triggered to protect the safety of the child. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1This is a schematic diagram of the connection structure of the passive protection device and the controller of the child safety seat in the first embodiment of the present invention;

[0022] Attached Figure 2 For attachment Figure 1 A schematic diagram of the structure of a gas generator for a child safety seat shown;

[0023] Attached Figure 3 For attachment Figure 1 A schematic diagram of the structure of a connector in a controller of a child safety seat shown;

[0024] Attached Figure 4 For attachment Figure 1 A schematic diagram of the structure of a sliding member in a controller of a child safety seat shown;

[0025] Attached Figure 5 For attachment Figure 1 A schematic diagram of the structure of the controller of the child safety seat shown in the first working state;

[0026] Attached Figure 6 For attachment Figure 5 A schematic cross-sectional structure diagram of ;

[0027] Attached Figure 7 For attachment Figure 1 A schematic diagram of the structure of the controller of the child safety seat in the second working state;

[0028] Attached Figure 8 For attachment Figure 7 A schematic cross-sectional structure diagram of ;

[0029] Attached Fig. 9 For attachment Figure 1 A schematic diagram of the structure of a socket in a child safety seat shown;

[0030] Attached Fig.10 For attachment Figure 1 A schematic diagram of the structure of a child safety seat when a connector is connected to a socket;

[0031] Attached Fig.11 This is a schematic diagram of the connection structure of the passive protection device and the controller of the child safety seat in the second embodiment of the present invention;

[0032] Attached Fig.12 For attachment Fig.11 A schematic diagram of the structure of the controller of the child safety seat shown in the first working state;

[0033] Attached Fig.13 For attachment Fig.12 Schematic diagram of the structure of the switch;

[0034] Attached Fig.14 For attachment Fig.11A schematic diagram of the structure of the controller of the child safety seat in the second working state;

[0035] Attached Fig.15 For attachment Fig.14 Schematic diagram of the switch structure.

[0036] The numbers in the figure are:

[0037] 1. Passive protection device; 11. Gas generator; 12. Pipe joint; 13. Air outlet;

[0038] 2. Controller; 21. Connector; 211. First conductor; 212. Second conductor; 213. Fifth conductor; 214. Lead wire; 22. Sliding member; 221. Third conductor; 222. Fourth conductor; 223. Slide slot; 23. Elastic member; 24. Switch; 241. First connecting pin; 242. Second connecting pin; 243. Slide block;

[0039] 3. Connecting wires; 4. Wires; 5. Control circuit unit;

[0040] 6. Socket. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

[0042] Embodiment 1

[0043] From the attached Figure 1 To Attachment Fig.10 As can be seen from the structural diagram, the child safety seat in this embodiment includes a passive protection device 1, two controllers 2, a wire 4 whose two ends are respectively connected to the two controllers 2, and a control circuit unit 5 whose two ends are respectively connected to the two controllers 2.

[0044] The passive protection device 1 includes a triggered device, and the triggered device in this embodiment is a gas generator 11. The passive protection device 1 has a closed state and a ready-to-trigger state. In the closed state, the passive protection device 1 will not be triggered. In the ready-to-trigger state, the passive protection device 1 can be triggered. Figure 1 In the embodiment shown, the passive protection device 1 includes the above-mentioned gas generator 11 and an air bag 13 connected to the gas generator 11 through a pipe joint 12. Figure 2 As shown, one end of the gas generator 11 connected to the airbag 13 has a gas outlet 112, and the other end is a signal input end 111, which is electrically connected to the controller 2. The control circuit unit 5 can control the gas generator to trigger the gas ejection.

[0045] The controller 2 is electrically connected to the passive protection device 1, and the state of the passive protection device 1 is switched by switching the working state of the controller 2. Specifically, the two controllers 2 are connected to the two ends of the triggered device in the passive protection device 1 through the connecting wires 3, as shown in the attached Figure 1 and attached Figure 2 As shown, there are two connecting wires 3, one end of the two connecting wires 3 is connected to the corresponding controller 2, and the other end is connected to the positive and negative electrodes of the signal input terminal 111 of the gas generator 11. Each controller 2 has a first working state and a second working state that can be switched with each other. When the two controllers 2 are in the first working state, the two ends of the wire 4 are connected to the two connecting wires 3 through the two controllers 2, and the two ends of the control circuit unit 5 are disconnected from the two connecting wires 3, so that the triggered device is short-circuited by the wire 4, and the passive protection device 1 is in a closed state. When the two controllers 2 are in the second working state, the two ends of the control circuit unit 5 are connected to the corresponding connecting wires 3 through the two controllers 2, and the two ends of the wire 4 are disconnected from the corresponding connecting wires 3 through the two controllers 2, and the passive protection device 1 is in a state to be triggered.

[0046] The control circuit unit 5 has a power supply. When the two controllers 2 are in the first working state, the two ends of the control circuit unit 5 are disconnected from the two controllers 2 and the two connecting wires 3, and then the two ends of the gas generator 11 are disconnected, so that the control circuit unit 5 loses control and power supply to the gas generator 11. At the same time, the two ends of the wire 4 are connected to the two connecting wires 3 through the two controllers 2, so that the gas generator 11 is short-circuited by the wire 4. In this way, when the two ends of the gas generator 11 are affected by static electricity or other factors and generate voltage, the gas generator 11 will not explode by mistake. When the two controllers 2 are in the second working state, the two ends of the control circuit unit 5 are connected to the corresponding connecting wires 3 through the two controllers 2, and the two ends of the wire 4 are disconnected from the corresponding connecting wires 3 and the control circuit unit 5 through the two controllers 2, so that the control circuit unit 5 and the gas generator 11 form a closed loop, so as to control the triggering of the gas generator 11 when the car is hit.

[0047] The child safety seat includes a seat body (not shown in the attached drawings) and a restraining mechanism (not shown in the attached drawings), each controller 2 includes a connector 21 connected to the restraining mechanism, two ends of a wire 4 are respectively connected to the connectors 21 in the two controllers 2, two ends of the triggered device are connected to the connectors 21 in the two controllers 2 (i.e. one end of the connecting wire 3 is connected to the corresponding connector 21), and two sockets 6 corresponding to the two controllers 2 are provided on the seat body, and two ends of the control circuit unit 5 are respectively connected to the two sockets 6. When the connector 21 in a certain controller 2 is separated from the corresponding socket 6, the controller 2 is in the first working state, and when the connector 21 in a certain controller 2 is connected to the corresponding socket 6, the controller 2 is in the second working state. The restraining mechanism is connected and separated from the seat body by the connection and separation of the connector 21 and the corresponding socket 6, and at the same time, the connection and disconnection between the triggered device and the control circuit unit 5 are realized. Therefore, when the child safety seat is not used normally and the restraining mechanism is not connected, the passive protection device 1 is in a closed state and cannot be triggered. When the child sits on the child safety seat and the restraining mechanism is connected, the passive protection device 1 is in a waiting state and can be triggered.

[0048] The control circuit unit 5 in this embodiment is preferably disposed inside the seat body. In other implementations, the control circuit unit 5 may also be externally connected to the outside of the seat body.

[0049] In this embodiment, the restraint mechanism is a stopper, which is detachably arranged in front of the seat body to prevent the child sitting in the seat body from moving forward. The passive protection device is arranged in the stopper. When the stopper is connected to the seat body, the two controllers 2 are in the second working state, and the passive protection device 1 is in the waiting state; when the stopper is detached from the seat body, the two controllers 2 are in the first working state, and the passive protection device 1 is in the closed state. The specific structure of the seat body and the stopper is not the invention point of this application and will not be introduced here.

[0050] Each controller 2 also includes a sliding member 22 slidably connected to the plug-in member 21, and the sliding member 22 has two working positions. When the controller 2 is in a first working state, the sliding member 22 is in the first working position, and when the controller 2 is in a second working state, the sliding member 22 is in the second working position. Figure 3-8 In the embodiment shown in the figure, the two working positions of the sliding member 22 are arranged up and down along the plug-in member 21, and the second working position is located above the first working position. Fig.10 As shown, when the plug connector 21 is connected to the socket 6 , the sliding member 22 at least partially enters the socket 6 .

[0051] The socket 6 has a blocking portion (not shown in the drawings) that can push the slide 22 from the first working position to the second working position when the plug 21 is inserted. When the plug 21 is inserted into the socket 6 from top to bottom, when the slide 22 contacts the blocking portion, it will no longer follow the plug 21 to continue to move downward due to the blocking of the blocking portion, thereby causing relative sliding with the plug 21 to change the working position. An elastic member 23 is provided between the plug 21 and the slide 22 to enable the slide 22 to slide from the second working position to the first working position. After the plug 21 is separated from the socket 6, it loses the blocking of the blocking portion, and the elastic member 23 will push the slide 22 to the first working position.

[0052] Each controller also includes a state switching device disposed between the plug-in connector 21 and the sliding member 22. As described above, in this embodiment, when both controllers 2 are in the first working state, the wire 4 is connected to the connecting wire 3, and the control circuit unit 5 is disconnected from the connecting wire 3. In this embodiment, a preferred specific structure of the state switching device that can achieve this is provided:

[0053] The state switching device includes a first conductor 211 and a second conductor 212 arranged on the plug connector 21, and a gap is provided between the first conductor 211 and the second conductor 212 so that the two do not contact each other, and the first conductor 211 in each controller 2 is connected to the corresponding connecting wire 3. The state switching device also includes a third conductor 221 and a fourth conductor 222 arranged on the sliding member 22, and a gap is provided between the third conductor 221 and the fourth conductor 222 so that the two do not contact each other, and the third conductor 221 in the two controllers 2 is respectively connected to the two ends of the wire 4. When a certain controller 2 is in the first working state, the end of the control circuit unit 5 is separated from the plug connector 21 and disconnected, and the sliding member 22 therein is in the first working position, and the first conductor 211 therein is in contact with the third conductor 221, so that the connecting wire 3 connected to the controller 2 is connected to the wire 4, that is, the connection between the triggered device and the wire 4 is realized, and the triggered device is short-circuited. When a controller 2 is in the second working state, the sliding member 22 therein is in the second working position, and the first conductor 211 and the second conductor 212 therein are conducted through contact with the fourth conductor 222, and the second conductor 212 is connected to the end of the control circuit unit 5 connected to the corresponding socket 6, so that the connecting wire 3 connected to the controller 2 is connected to the control circuit unit 5, that is, the connection between the triggered device and the control circuit unit is realized; at the same time, the first conductor 211 and the second conductor 212 in the controller 2 are separated from the third conductor 221, so that the connecting wire 3 connected to the controller 2 and the end of the control circuit unit 5 are disconnected from the wire 4, that is, the triggered device and the control circuit unit are disconnected from the wire 4 at the same time.

[0054] In a more preferred embodiment, the slider 22 is made of insulating material, such as plastic or insulating rubber. When the slider 22 is in the first working position, the slider 22 covers the first conductor 211 and the second conductor 212 in the same controller 2, thereby playing an insulating role and preventing the conductors from being exposed. This not only plays a safety role, but also can prevent misconduct caused by contact with other conductive materials.

[0055] Working principle:

[0056] When the child safety seat is not in normal use and the restraint mechanism is not connected, the connectors 21 of the two controllers 2 are separated from the sockets 6 on the seat body. Therefore, both ends of the control circuit unit 5 are disconnected from the controller 2, causing it to lose control of the gas generator 11. Figure 5 and attached Figure 6 As shown, under the action of the elastic member 23, the sliding member 22 is maintained at the first working position, and the first conductor 211 on the plug-in member 21 contacts the third conductor 221 on the sliding member 22, so that the wire 4 is connected to the connecting wire 3. At this time, the wire 4 is connected to both ends of the gas generator 11, so that the gas generator 11 is short-circuited. When the plug-in member 21 hits other objects and generates static electricity, or when a voltage is generated at both ends of the gas generator 11 due to other factors, the wire 4 can form a short-circuit protection for the gas generator 11, so that the passive protection device 1 is in a closed state that cannot be triggered, thereby preventing the gas generator 11 from accidentally exploding;

[0057] When a child is seated on the child safety seat and the restraint belt is connected, the connectors 21 of the two controllers 2 are inserted into the corresponding sockets 6 on the seat body. Figure 6 and attached Figure 8 As shown, under the action of the blocking portion on the socket 6, the sliding member 22 slides relative to the connector 21 to the second working position. At this time, the third conductor 221 on the sliding member 22 is separated from the first conductor 211 on the connector 21, so that the wire 4 and the connecting wire 3 are disconnected and no longer conductive. At the same time, the fourth conductor 222 on the sliding member 22 is in contact with the first conductor 211 and the second conductor 212 on the connector 21, so that the control circuit unit 5 and the gas generator 11 form a closed loop. The control circuit unit can trigger and control the passive protection device 1. When the current in the loop changes suddenly, the current signal can be directly transmitted to the gas generator 11, so that it detonates to inflate the airbag 13.

[0058] Embodiment 2

[0059] Reference Fig.11 To Attachment Fig.15 The main difference between the child safety seat in this embodiment and the first embodiment is the structure of the state switching device.

[0060] The state switching device in this embodiment includes a switch 24 arranged on the connector 21, and the switches 24 in the two controllers 2 are respectively connected between the two ends of the wire 4 and the corresponding connecting wire 3. The state switching device also includes a driving part arranged on the sliding member 22 and capable of toggling the switch 24 to open and close. When a controller 2 is in the first working state, the end of the control circuit unit 5 is separated from the connector 21 and disconnected, and the sliding member 22 is in the first working position. The switch 24 is closed, and the wire 4 is connected to the corresponding connecting wire 3, so that the wire 4 short-circuits the gas generator 11. When the sliding member 22 is in the second working position, the switch 24 is opened, the wire 4 is disconnected from the connecting wire 3, and the control circuit unit 5 is connected to the connecting wire 3, so that the control circuit unit 5 and the gas generator 11 form a parallel circuit unit, and the parallel circuit unit and the external power supply 6 form a closed loop.

[0061] The plug connector 21 is provided with a fifth conductor 213, and the connecting wire 3 is connected to the fifth conductor 213 on the corresponding plug connector 21. When the controller 2 is in the second working state, the fifth conductor 213 is connected to the end of the control circuit unit 5 connected to the corresponding socket 6.

[0062] In a more preferred embodiment, the sliding member 22 is made of insulating material. When the sliding member 22 is in the first working position, the sliding member 22 covers the fifth conductor 213 to play an insulating role.

[0063] In a more preferred embodiment, the switch 24 has a first connection pin 241 and a second connection pin 242, the wire 4 and the connecting wire 3 are respectively connected to the first connection pin 241 and the second connection pin 242, and the fifth conductor 213 is connected to the second connection pin 242 through the wire 214. When the switch 24 is closed, the first connection pin 241 and the second connection pin 242 are connected, and when the switch 24 is opened, the first connection pin 241 and the second connection pin 242 are disconnected and no longer connected.

[0064] In this embodiment, a specific structure of a switch 24 is provided, which has a rotatable shift block 243. The shift block 243 has a closed working position that puts the switch 24 in a closed state and an open working position that puts the switch 24 in an open state. The sliding member 22 has a shift groove 223 that can shift the shift block 243 to rotate, that is, the above-mentioned driving part.

[0065] Working principle:

[0066] When the child safety seat is not in normal use and the restraint mechanism is not connected, the connector 21 of the controller 2 is separated from the socket 6 on the seat body, so that the two ends of the control circuit unit 5 are disconnected. Fig.12 and attached Fig.13As shown, under the action of the elastic member 23, the sliding member 22 is maintained in the first working position. At this time, the sliding groove 223 on the sliding member 22 slides the sliding block 243 of the switch 24 to the closed working position, the switch 24 is closed, the wire 4 is connected to the connecting wire 3, and the gas generator 11 is short-circuited. In this way, the control circuit unit 5 loses control of the gas generator 11, and the wire 4 forms a short-circuit protection for the gas generator 11, so that the passive protection device 1 is in a closed state that cannot be triggered, thereby preventing the gas generator 11 from accidentally exploding;

[0067] When a child sits on the child safety seat and has the restraint belt connected, the connector 21 of the controller 2 is inserted into the socket 6 on the seat body. Fig.14 and attached Fig.15 As shown, under the action of the blocking portion on the socket 6, the sliding member 22 slides to the second working position relative to the plug-in connector 21. At this time, the sliding groove 223 on the sliding member 22 slides the sliding block 243 of the switch 24 to the open working position, the switch 24 is turned on, and the two ends of the wire 4 are disconnected. The control circuit unit 5 and the gas generator 11 form a closed loop. The control circuit unit 5 can trigger and control the passive protection device 1. When the circuit in the loop changes suddenly, the current signal can be directly transmitted to the gas generator 11 to detonate it to inflate the airbag 13.

[0068] The child safety seat in the above embodiment can switch the two controllers to the first working state when the child safety seat is not in normal use. Due to the connection of the wires, a completely closed protection circuit is formed between the two controllers and the triggered device, thereby preventing the passive protection device from accidentally exploding when the child safety seat is not in normal use. When the child safety seat is in normal use, the two controllers can be switched to the second working state, the wires are disconnected from the passive protection device, and the control circuit unit and the triggered device can form a new closed circuit, so that control can be achieved in the event of a collision, so that the passive protection device is triggered to protect the safety of the child.

[0069] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A child safety seat, characterized in that: The invention comprises a passive protection device (1), two controllers (2), a wire (4) having two ends respectively connected to the two controllers (2), and a control circuit unit (5) having two ends respectively connected to the two controllers (2) in a detachable manner, wherein the passive protection device (1) comprises a triggered device, wherein two ends of the triggered device are respectively connected to the two controllers (2). The child safety seat comprises a seat body and a restraining mechanism, each of the controllers (2) comprises a connector (21) connected to the restraining mechanism, two ends of the wire (4) are respectively connected to the connectors (21) in the two controllers (2), two ends of the triggered device are connected to the connectors (21) in the two controllers (2), the seat body is provided with two sockets (6) corresponding to the two controllers (2), two ends of the control circuit unit (5) are respectively connected to the two sockets (6), Each of the controllers (2) has a first working state and a second working state that can be switched to each other. When the plug connector (21) in the controller (2) is separated from the corresponding socket (6), the controller (2) is in the first working state. When the plug connector (21) in the controller (2) is connected to the corresponding socket (6), the controller (2) is in the second working state. The restraining mechanism is a block, and the passive protection device (1) is arranged in the block. When the block is detached from the seat body, the two controllers (2) are both in a first working state, the two ends of the wire (4) are respectively connected to the two ends of the triggered device through the two controllers (2), and the passive protection device (1) is in a closed state; when the block is connected to the seat body, the two controllers (2) are both in a second working state, the two controllers (2) respectively disconnect the two ends of the wire (4) from the two ends of the triggered device, and the two ends of the control circuit unit (5) are respectively connected to the two ends of the triggered device through the two controllers (2), and the passive protection device (1) is in a waiting state for triggering; Each of the controllers (2) further comprises a sliding member (22) slidably connected to the plug-in member (21) and having two working positions; when the controller (2) is in a first working state, the sliding member (22) in the controller (2) is in the first working position; and when the controller (2) is in a second working state, the sliding member (22) in the controller (2) is in the second working position; each of the controllers (2) further comprises a state switching mechanism arranged between the plug-in member (21) and the sliding member (22).

2. The child safety seat according to claim 1, characterized in that: An elastic member (23) is provided between the plug-in member (21) and the sliding member (22), which enables the sliding member (22) to slide from the second working position to the first working position.

3. The child safety seat according to claim 1, characterized in that: The socket (6) has a blocking portion capable of pushing the sliding member (22) from the first working position to the second working position when the plug-in member (21) is inserted.

4. The child safety seat according to claim 1, characterized in that: The state switching mechanism comprises a first conductor (211) and a second conductor (212) arranged on the plug connector (21), a gap being provided between the first conductor (211) and the second conductor (212), and two ends of the triggered device being connected to the first conductors (211) in the two controllers (2) respectively. The state switching mechanism further comprises a third conductor (221) and a fourth conductor (222) arranged on the sliding member (22), a gap being provided between the third conductor (221) and the fourth conductor (222), and two ends of the wire (4) are respectively connected to the third conductors (221) in the two controllers (2). When the controller (2) is in a first working state, the first conductor (211) and the third conductor (221) in the controller (2) are in contact, so that the end of the triggered device connected to the controller (2) is connected to the end of the wire (4); when the controller (2) is in a second working state, the first conductor (211) and the second conductor (212) in the controller (2) are connected by contact with the fourth conductor (222) and the second conductor (212) in the controller (2) is connected to the end of the control circuit unit (5) connected to the corresponding socket (6), so that the end of the triggered device connected to the controller (2) is connected to the end of the control circuit unit (5), and the first conductor (211) and the second conductor (212) in the controller (2) are separated from the third conductor (221), so that the end of the triggered device connected to the controller (2) and the end of the control circuit unit (5) are disconnected from the end of the wire (4).

5. The child safety seat according to claim 4, characterized in that: The sliding member (22) is made of insulating material, and when the controller (2) is in a first working state, the sliding member (22) in the controller (2) covers the first conductor (211) and the second conductor (212) in the same controller (2).

6. The child safety seat according to claim 1, characterized in that: The state switching mechanism comprises a switch (24) arranged on the plug-in connector (21), two ends of the wire (4) are respectively connected to the switches (24) in the two controllers (2), and two ends of the triggered device are respectively connected to the switches (24) in the two controllers (2), and the state switching mechanism further comprises a driving unit arranged on the sliding member (22) and capable of toggling the switch (24) to open and close. When the controller (2) is in a first working state, the switch (24) in the controller (2) is closed, so that the end of the triggered device connected to the controller (2) and the end of the wire (4) are connected; when both controllers (2) are in a second working state, the switch (24) in the controller (2) is opened, so that the end of the triggered device connected to the controller (2) and the end of the wire (4) are disconnected.

7. The child safety seat according to claim 6, characterized in that: The plug connector (21) is provided with a fifth conductor (213), and two ends of the triggered device are respectively connected to the fifth conductors (213) in the two controllers (2). When the controller (2) is in the second working state, the fifth conductor (213) in the controller (2) is connected to the end of the control circuit unit (5) connected to the corresponding socket (6).

8. The child safety seat according to claim 7, characterized in that: The sliding member (22) is made of insulating material, and when the controller (2) is in the first working state, the sliding member (22) in the controller (2) covers the fifth conductor (213) in the same controller (2).

9. The child safety seat according to claim 1, characterized in that: The control circuit unit (5) has a power supply, and when the two controllers (2) are both in the second working state, the triggered device and the control circuit unit (5) form a closed loop.

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