CN103552524B - School bus child alarm device - Google Patents

Abstract

The school bus child alarm device comprises a controller, a driver seat, a child seat and a safe door closing device; the driver seat comprises a first seat frame, a first seat cushion, a first button switch and a first backrest, wherein the first button switch is arranged between a first bottom plate of the first seat cushion and a first groove bottom of the first guide groove, and the first button switch is a normally closed switch; the child seat comprises a second seat frame, a second seat cushion, a second button switch and a second backrest, wherein the second button switch is arranged between a second bottom plate of the second seat cushion and a second groove bottom of the second guide groove, and is a normally open switch; the safe door closing device is composed of an electric element, a base of the electric element is fixedly connected with the door frame, and a power head of the electric element faces the door; if a child is in the vehicle, the electric element is electrified, the power head extends out to block the vehicle door, so that the vehicle door cannot be closed, and the child is prevented from being closed in the vehicle.

Description

School bus child alarm device

technical field

The invention relates to a safety device, in particular to a school bus child alarm device.

Background technique

At present, during the pick-up and drop-off process of kindergarten school buses, there are often kindergarten children left in the bus. Due to the high temperature and lack of oxygen in the sealed bus, the children left in the bus are suffocated to death. A kind of school bus child alarm device that prevents children from being left in the car has become a need to protect children.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a school bus child alarm device to prevent children from being left in the vehicle.

The technical scheme adopted by the present invention is: the school bus child alarm device includes a controller, a driver's seat, a child's seat and a safety door closing device; the driver's seat includes a first seat frame, a first cushion, a first button switch and a second A backrest, the first seat cushion is movably fitted in the first guide groove of the first seat frame, the first button switch is installed between the first bottom plate of the first seat cushion and the first groove bottom of the first guide groove, the first button switch The first base is fixedly connected to the bottom of the first groove, the first button of the first button switch is in contact with the first bottom plate, the first button switch is a normally closed switch, and when the driver sits on the first seat cushion, the first button switch is disconnected; The child seat includes a second seat frame, a second seat cushion, a second button switch and a second backrest, the second seat cushion is movably fitted in the second guide groove of the second seat frame, and the second button switch is installed on the Between the second base plate and the second groove bottom of the second guide groove, the second base of the second button switch is fixedly connected with the second groove bottom, the second button of the second button switch contacts the second bottom plate, and the second button switch It is a normally open switch. When the child sits on the second cushion, the second button switch is closed; the safety door closing device is composed of electric components, the electric components include electric push rods or electromagnets, and the base of the electric components is fixedly connected with the door frame. The power head of the electric component faces the door. If there is a child in the car, the electric component is energized, and the power head stretches out to block the door so that the door cannot be closed, which is used to prevent children from being locked in the car; the controller has a first alarm The indicator light and the second warning indicator light are used to indicate the situation in the vehicle; the controller is provided with a control line connected with the first button switch, the second button switch and the electric element.

The working principle of the school bus child alarm device is: after the driver opens the door, the car's control system transmits a door open signal to the controller, and the controller of the school bus child alarm device enters an automatic control state; The first button switch is in the normally closed state; after the child gets on the car and sits on the child seat, the second cushion of the child seat overcomes the spring force of the second button switch spring under the action of the child's body weight, so that the normally open first button switch The second button switch is closed; the second button switch transmits the signal that the child sits on the child seat to the controller, and the controller controls the first alarm indicator to light up, which is used to indicate that there is a child in the child seat; at the same time, the controller controls the safety door closing device When the electric element is energized, the power head of the electric element stretches out to block the door so that the door cannot be closed; after the driver gets on the car and sits on the driver's seat, the first seat cushion of the driver's seat overcomes the first button switch under the action of the driver's body weight. The elastic force of the spring drops, so that the normally closed first button switch is broken; the first button switch transmits the signal that the driver sits on the driver's seat to the controller, and the controller controls to cut off the power supply of the electric element, and the power head of the electric element resets and retracts , so that the school bus can close the door; the driver closes the door and drives the child to the destination. After the child gets off the car and leaves the child seat, the second seat cushion of the child seat returns and rises under the elastic force of the second button switch spring. The button switch is reset from closed to normally open state, and the second button switch transmits the signal that the child leaves the child seat to the controller, and the controller controls the first alarm indicator light to go out, so that the driver can know from the first alarm indicator light of the controller When the child leaves the child's seat; when the driver leaves the driver's seat, the first seat cushion of the driver's seat will reset and rise under the elastic force of the first button switch spring, and the first button switch will reset to the normally closed state from the disconnection. A button switch transmits the signal that the driver leaves the driver's seat to the controller; after the driver leaves the driver's seat, if there are children on the child seat, the second button switch on the child seat is closed, and the second button switch turns the child seat There are also children's signals transmitted to the controller, and the controller controls the power-on of the electric element of the safety door closing device. The child was locked in the car, and the life of the child was threatened.

The beneficial effects of the present invention are: the school bus child alarm device is provided with multiple protection functions, and the driver's seat, children's seat and safety door closing device of the school bus are used to monitor and control the situation in the school bus. When the seat or child seat is on the side or below, the controller controls the door to not close, forcing the driver or teacher to check whether there are children left in the car, effectively preventing children from being left in the car.

Description of drawings

Figure 1 is a structural schematic diagram of a school bus child alarm device.

Detailed ways

Below according to accompanying drawing and specific embodiment the present invention is further described:

The structural diagram of the school bus child alarm device shown in Figure 1, the school bus child alarm device includes a controller 1, a driver's seat 2, a child's seat 3 and a safety door closing device 4; the driver's seat 2 includes a first seat frame 5, The first seat cushion 6, the first button switch 7 and the first backrest 8, the first seat cushion 6 is movably fitted in the first guide groove 10 of the first seat frame 5, the first button switch 7 is installed on the first seat cushion 6 Between the base plate 11 and the first groove bottom 12 of the first guide groove 10, the first base 13 of the first button switch 7 is fixedly connected with the first groove bottom 12, and the first button 14 of the first button switch 7 is connected with the first bottom plate 11 contacts, the first button switch 7 is a normally closed switch; when the driver sits on the first cushion 6, the first button switch 7 is disconnected; the child seat 3 includes a second seat frame 15, a second cushion 16, a second button The switch 17 and the second backrest 18, the second cushion 16 are movably fitted in the second guide groove 20 of the second seat frame 15, and the second button switch 17 is installed on the second bottom plate 21 and the second guide groove 20 of the second seat cushion 16 Between the second groove bottom 22 of the second button switch 17, the second base 23 of the second button switch 17 is fixedly connected with the second groove bottom 22, and the second button 24 of the second button switch 17 is in contact with the second bottom plate 21, and the second button switch 17 It is a normally open switch; when the child sits on the second cushion 16, the second button switch 17 is closed; the safety door closing device 4 is made of an electric element 27, and the electric element 27 includes an electric push rod or an electromagnet, and the support of the electric element 27 28 is fixedly connected with the car door frame 29, and the power head 30 of the electric element 27 faces the car door 31. If a child is in the car, the electric element 27 is energized, and the power head 30 stretches out to block the car door 31, so that the car door 31 cannot be closed. Prevent children from being locked in the car; the controller 1 is provided with a first warning indicator light 32 and a second warning indicator light 33, and the controller 1 is provided with a control line and a first button switch 7, a second button switch 17 and an electric element 27 connect.

In order to implement the automatic control of the controller 1 and implement the multiple protection functions of the school bus, the controller 1 is provided with the first human body sensor 9, the second human body sensor 19, the third human body sensor 25 and the fourth human body sensor 26; 9 is arranged on the first backrest 8 of the driver's seat 2, the second human body sensor 19 is arranged on the second backrest 18 of the child seat 3, and the third human body sensor 25 is arranged on the bottom surface of the second seat frame 15 of the child seat 3 , the fourth human body sensor 26 is located on the side of the second seat frame 15 of the child seat 3; the controller 1 is provided with a control line and the first human body sensor 9, the second human body sensor 19, the third human body sensor 25 and the fourth human body sensor 26 connection; the controller 1 is connected with the first button switch 7, the first button switch 7 is connected with the second button switch 17, the second button switch 17 is connected with the electric element 27, and the electric element 27 is connected with the controller 1; the first button The switch 7 is connected in series with the second push button switch 17 , and the second push button switch 17 is connected in series with the electric element 27 .

In order to control the stroke of the first cushion 6 and the second cushion 16, and prevent the first cushion 6 and the second cushion 16 from crushing the first button switch 7 and the second button switch 17, the first guide groove 10 of the driver's seat 2 A first limit card 34 is provided, and the first limit card 34 is positioned under the first base plate 11 of the first seat cushion 6. When the first base plate 11 descends to the position of the first limit card 34, it is blocked by the first limit card 34. Stuck can not fall again, effectively prevent the first seat cushion 6 from crushing the first button switch 7; the distance from the first bottom plate 11 to the first limit card 34 is greater than the breaking stroke of the first button switch 7, to ensure that the driver sits on the After the driver's seat 2, the first cushion 6 descends and can break off the normally closed first button switch 7. The second guide groove 20 of the child seat 3 is provided with a second limit card 35, the second limit card 35 is located below the second bottom plate 21 of the second seat cushion 16, and the second bottom plate 21 drops to the second limit card 35 position, it is blocked by the second limit card 35 and cannot be lowered, effectively preventing the second seat cushion 16 from crushing the second button switch 17; the distance from the second bottom plate 21 to the second limit card 35 is greater than that of the second button switch 17 breaking strokes, to ensure that after the child sits on the children's seat 3, the normally open first button switch 7 can be closed when the second cushion 16 descends.

In order to ensure the reliability of the first button switch 7 and the second button switch 17, the driver's seat 2 is provided with a plurality of first button switches 7, and all the first button switches 7 on the driver's seat 2 are connected in parallel; 3. A plurality of second button switches 17 are provided, and all the second button switches 17 on the child seat 3 are connected in parallel; all child seat 3 on the school bus are equipped with second button switches 17; the second alarm indicator light 33 is provided with Multiple, multiple first push button switches 7 are provided, and each first push button switch 7 is correspondingly provided with a second warning indicator light 33 .

In order to implement the lifting movement of the first cushion 6 and the second cushion 16, ensure the normal operation of the first button switch 7 and the second button switch 17, the first bottom plate 11 of the first cushion 6 and the first groove of the first guide groove 10 The bottom 12 is provided with a first spring 36, which is used to increase the elastic force of the first seat cushion 6 to reset; The first cushion 6 can be closed by depressing the first button switch 7; the elastic force of the first spring 36 is greater than the gravity of the first cushion 6, so that after the driver leaves the driver's seat 2, the first cushion 6 can reset automatically. A second spring 37 is provided between the second bottom plate 21 of the second seat cushion 16 and the second groove bottom 22 of the second guide groove 20 for increasing the elastic force of the second seat cushion 16 to return. The total gravity of the child and the second cushion 16 is greater than the elastic force of the second spring 37, to ensure that when the child sits on the child seat 3, the second cushion 16 can be lowered to press the second button switch 17 to close; the elastic force of the second spring 37 is greater than The gravity of the second cushion 16 is to ensure that after the child leaves the child seat 3, the second cushion 16 can automatically reset.

The working principle of the school bus child alarm device is: after the driver opens the door 31, the control system of the car transmits a door opening signal to the controller 1, and the controller 1 of the school bus child alarm device enters an automatic control state; , the first button switch 7 of the driver's seat 2 is normally closed; after the child gets on the car and sits on the child seat 3, the second cushion 16 of the child seat 3 overcomes the second button switch 17 under the action of the child's body weight. The elastic force of the spring drops, so that the normally open second button switch 17 is closed; the second button switch 17 transmits the signal that the child sits on the child seat 3 to the controller 1, and the controller 1 controls the first alarm indicator light 32 to be bright; , the controller 1 controls the energization of the electric element 27 of the safety door closing device 4, and the power head 30 of the electric element 27 stretches out to block the car door 31 so that the car door 31 cannot be closed; The first seat cushion 6 overcomes the elastic force of the spring of the first button switch 7 under the action of the driver's body weight, so that the normally closed first button switch 7 is broken; the first button switch 7 signals the driver to sit on the driver's seat 2 Transmission to the controller 1, the controller 1 controls to cut off the power supply of the electric element 27, and the power head 30 of the electric element 27 resets and retracts, so that the school bus can close the door; the driver will drive the child to the destination after closing the door, and the child will get off and leave the child After the seat 3, the second cushion 16 of the children's seat 3 resets and rises under the action of the elastic force of the second button switch 17 spring, and the second button switch 17 is reset to a normally open state by closing, and the second button switch 17 will leave the child. The signal of the child seat 3 is transmitted to the controller 1, and the controller 1 controls the first warning indicator light 32 to go out, so that the driver can know the situation of the child leaving the child seat 3 from the first alarm indicator light 32 of the controller 1; When leaving the driver's seat 2, the first seat cushion 6 of the driver's seat 2 resets and rises under the elastic force of the first button switch 7 springs, and the first button switch 7 resets to a normally closed state by breaking off, and the first button switch 7 will The signal that the driver leaves the driver's seat 2 is transmitted to the controller 1; after the driver leaves the driver's seat 2, if there are children on the child seat 3, the second button switch 17 on the child seat 3 is closed, and the second button switch 17 will Children's seat 3 also has children's signal transmission to controller 1, and controller 1 controls the energization of electric element 27 of safety door closing device 4, and the power head 30 of electric element 27 stretches out, blocks car door 31, and car door 31 can not be closed, prevents The child was locked in the car, and the life of the child was threatened.

In order to carry out all-round monitoring to the school bus, prevent children from remaining in the car, when the driver leaves the driver's seat 2, in case the first button switch 7 fails, the first human body sensor 9 on the first backrest 8 of the driver's seat 2 The signal that the driver leaves the driver's seat 2 is transmitted to the controller 1. If there are children on the child's seat 3, in case the second button switch 17 fails, the second human body sensor 19 on the second backrest 18 of the child's seat 3 will The signal that the child is still in the child seat 3 is transmitted to the controller 1, and the controller 1 controls the electric element 27 of the safety door closing device 4 to be energized, and the power head 30 of the electric element 27 stretches out to block the car door 31, so that the car door 31 cannot be closed, preventing Children were locked in the car. When the driver leaves the driver's seat 2, if there is a child on the bottom surface of the second seat frame 15 of the child's seat 3, the third human body sensor 25 transmits the signal of the child to the controller 1, and the controller 1 controls the electric motor of the safety door closing device 4. Element 27 is energized, and the power head 30 of electric element 27 stretches out, blocks car door 31, and car door 31 can not be closed, prevents children from being shut in the car. When the driver leaves the driver's seat 2, if there is a child on the side of the second seat frame 15 of the child's seat 3, the fourth human body sensor 26 transmits the signal of the child to the controller 1, and the controller 1 controls the electric motor of the safety door closing device 4. Element 27 is energized, and the power head 30 of electric element 27 stretches out, blocks car door 31, and car door 31 can not be closed, prevents children from being shut in the car. When the power head 30 of the electric element 27 stretches out, the normally closed first button switch 7 resets and closes, the normally open second button switch 17 closes, and the power is sent by the controller 1 through the first button switch 7 and the second button switch 17. to the electric element 27, and then returns to the controller 1 by the electric element 27, forming a loop.

Claims (9)

1. School bus child alarm device. The school bus child alarm device is installed on the school bus. The school bus child alarm device includes a controller (1), a driver's seat (2), a child seat (3) and a safety door closing device (4); the driver The seat (2) includes a first seat frame (5), a first cushion (6), a first button switch (7) and a first backrest (8), and the first button switch (7) is a normally closed switch; children The seat (3) includes a second seat frame (15), a second seat cushion (16), a second button switch (17) and a second backrest (18), and the second button switch (17) is a normally open switch; The door closing device (4) is composed of an electric element (27), the base (28) of the electric element (27) is fixedly connected with the door frame (29), and the power head (30) of the electric element (27) faces the door (31); The controller (1) is provided with a first alarm indicator light (32) and a second alarm indicator light (33); the controller (1) is provided with a first human body sensor (9), a second human body sensor (19), a third The human body sensor (25) and the fourth human body sensor (26); the first human body sensor (9) is arranged on the first backrest (8) of the driver's seat (2), and the second human body sensor (19) is arranged on the child's seat On the second backrest (18) of (3), the third human sensor (25) is located on the bottom surface of the second seat frame (15) of the child seat (3), and the fourth human sensor (26) is located on the child seat ( 3) The side of the second seat frame (15); the first guide groove (10) of the driver's seat (2) is provided with a first limit card (34), and the first limit card (34) is located on the first seat cushion ( 6) under the first bottom plate (11); the second guide groove (20) of the child seat (3) is provided with a second limit card (35), and the second limit card (35) is located on the second seat cushion ( 16) below the second bottom plate (21); between the first bottom plate (11) of the first seat cushion (6) and the first groove bottom (12) of the first guide groove (10) is provided with a first spring (36 ), a second spring (37) is provided between the second bottom plate (21) of the second seat cushion (16) and the second groove bottom (22) of the second guide groove (20); it is characterized in that: the school bus The working principle of the child alarm device is: after the driver opens the door (31), the control system of the car transmits a door opening signal to the controller (1), and the controller (1) of the school bus child alarm device enters an automatic control state; the driver opens the door (31) When not in the car, the first button switch (7) of the driver's seat (2) is normally closed; (16) Under the action of the child's body weight, the elastic force of the spring of the second button switch (17) is overcome and the normally open second button switch (17) is closed; the second button switch (17) puts the child on the child's seat The signal from the chair (3) is transmitted to the controller (1), and the controller (1) controls the first alarm indicator light (32) to light; at the same time, the controller (1) controls the electric element (27) of the safety door closing device (4) Energize, the power head ( 30) Stretch out to block the car door (31), so that the car door (31) cannot be closed; after the driver gets on the car and sits on the driver's seat (2), the first seat cushion (6) of the driver's seat (2) is under the weight of the driver's body. Under the action, overcome the elastic force of the spring of the first button switch (7) to drop, so that the normally closed first button switch (7) is broken; the first button switch (7) transmits the signal that the driver sits on the driver's seat (2) to The controller (1), the controller (1) controls to cut off the power supply of the electric element (27), and the power head (30) of the electric element (27) is reset and retracted, so that the school bus can close the door; the driver drives the child to the school after closing the door. Destination, after the child gets off the car and leaves the child seat (3), the second cushion (16) of the child seat (3) resets and rises under the spring force of the second button switch (17), and the second button switch ( 17) Reset from closed to normally open state, the second button switch (17) transmits the signal that the child leaves the child seat (3) to the controller (1), and the controller (1) controls the first alarm indicator light (32) extinguish, so that the driver can know the situation of the child leaving the child seat (3) from the first alarm indicator light (32) of the controller (1); when the driver leaves the driver's seat (2), the driver's seat (2) The first seat cushion (6) resets and rises under the action of the spring force of the first button switch (7), the first button switch (7) resets to the normally closed state from the break, and the first button switch (7) moves the driver away from the driver's seat The signal from the seat (2) is transmitted to the controller (1); after the driver leaves the driver's seat (2), if there are children on the child seat (3), the second button switch (17) on the child seat (3) Closed, the second button switch (17) transmits the signal of the child seat (3) and the child to the controller (1), and the controller (1) controls the electric element (27) of the safety door closing device (4) to be energized, and the electric The power head (30) of element (27) stretches out, blocks car door (31), and car door (31) can not be closed, prevents children from being shut in the car, and threatens the life of children. 2. The school bus child alarm device according to claim 1, characterized in that: when the driver leaves the driver's seat (2), in case the first button switch (7) fails, the driver's seat (2) first The first human body sensor (9) on the backrest (8) transmits the signal that the driver leaves the driver's seat (2) to the controller (1). If there are children on the child seat (3), in case the second button switch (17) failure, the second human body sensor (19) on the second backrest (18) of the child seat (3) transmits the signal that the child is still in the child seat (3) to the controller (1), and the controller (1 ) to control the energization of the electric element (27) of the safety door closing device (4), and the power head (30) of the electric element (27) stretches out to block the door (31), so that the door (31) cannot be closed, preventing children from being locked in the car Inside. 3. The school bus child alarm device according to claim 1, characterized in that: when the driver leaves the driver's seat (2), if there is a child on the bottom surface of the second seat frame (15) of the child seat (3), , the third human body sensor (25) transmits the child's signal to the controller (1), and the controller (1) controls the electric element (27) of the safety door closing device (4) to be energized, and the power head of the electric element (27) ( 30) Stretch out to block the car door (31), so that the car door (31) cannot be closed, preventing children from being locked in the car. 4. The school bus child alarm device according to claim 1, characterized in that: when the driver leaves the driver's seat (2), if there is a child on the side of the second seat frame (15) of the child seat (3) , the fourth human body sensor (26) transmits the child's signal to the controller (1), and the controller (1) controls the electric element (27) of the safety door closing device (4) to be energized, and the power head of the electric element (27) ( 30) Stretch out to block the car door (31), so that the car door (31) cannot be closed, preventing children from being locked in the car. 5. The school bus child alarm device according to claim 1, characterized in that: when the power head (30) of the electric element (27) is stretched out, the normally closed first button switch (7) resets and closes, normally The opened second button switch (17) is closed, and the power is sent from the controller (1) to the electric element (27) through the first button switch (7) and the second button switch (17), and then returned by the electric element (27) to the controller (1), forming a loop. 6. The school bus child alarm device according to claim 1, characterized in that: the total gravity of the driver and the first seat cushion (6) is greater than the elastic force of the first spring (36), so as to ensure that the driver sits on the driver's child seat When seat (2), the first cushion (6) can be lowered and the first button switch (7) is closed; the elastic force of the first spring (36) is greater than the gravity of the first cushion (6), to ensure that the driver leaves the driver's seat After (2), the first cushion (6) can reset automatically. 7. The school bus child alarm device according to claim 1, characterized in that: the total gravity of the child and the second cushion (16) is greater than the elastic force of the second spring (37), so as to ensure that the child sits on the child seat (3), the second cushion (16) can be lowered and the second button switch (17) is closed; the elastic force of the second spring (37) is greater than the gravity of the second cushion (16) to ensure that the child leaves the child seat ( 3) After that, the second cushion (16) can reset automatically. 8. The school bus child alarm device according to claim 1, characterized in that: the distance from the first bottom plate (11) to the first limit card (34) is greater than the breaking stroke of the first button switch (7), After the driver gets on the driver's seat (2) to ensure that the first cushion (6) descends, the normally closed first button switch (7) can be disconnected. 9. The school bus child alarm device according to claim 1, characterized in that: the distance from the second bottom plate (21) to the second limit card (35) is greater than the breaking stroke of the second button switch (17), To ensure that after the child sits on the child seat (3), the normally open first button switch (7) can be closed when the second cushion (16) descends.