Light rail trolley running anti-misoperation door opening safety device

Abstract

The utility model provides a kind of light rail trolley driving anti-misoperation door opening safety device, including shell, the inside of shell is provided with driving piece, the upper end of driving piece is movably provided with lock tongue, the lower end of lock tongue is provided with spring, the side of driving piece is fixedly connected with rack, the inside of shell is provided with driving motor, the output of driving motor is fixedly connected with gear, gear and rack are mutually engaged, the lower end of lock tongue is fixedly connected with emergency pull rod.The utility model is provided with emergency pull rod, in emergency, lock tongue can be pulled out of lock hole.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to a safety device for preventing accidental opening of doors while a light rail trolley is in motion. Background Technology

[0002] In a broad sense, transportation refers to all man-made devices used for human transportation, including cars, ships, and airplanes. During operation, it is necessary to ensure that doors remain locked to prevent accidental opening by passengers. Simultaneously, in emergency situations, the doors need to be operable for rescue and evacuation. This invention provides a safety device that can be opened manually in an emergency. Utility Model Content

[0003] This utility model discloses a safety device for preventing accidental door opening during the operation of a lightweight railcar, comprising a housing, an active component inside the housing, a locking tongue movably mounted on the upper end of the active component, and a spring mounted on the lower end of the locking tongue. Under the action of the spring, the locking tongue remains in an outwardly extended state, and when the device is in operation, the locking tongue engages in a pre-set lock hole to lock the door.

[0004] A rack is fixedly connected to one side of the driving component, and a drive motor is installed inside the housing. A gear is fixedly connected to the output end of the drive motor, and the gear and rack mesh with each other. When the drive motor is started, the driving component is raised or lowered through the gear and rack transmission, thereby enabling the lock tongue to extend into or disengage from the lock hole.

[0005] An emergency pull rod is fixedly connected to the lower end of the locking tongue. In case of emergency, the emergency pull rod can be pulled down, causing the locking tongue to descend and disengage from the lock hole, where the spring is compressed.

[0006] Preferably, the front of the outer shell is provided with an inner shell component, one end of the emergency pull rod extends into the interior of the inner shell component, the interior of the inner shell component is provided with a lever, and the lever is fixedly connected to the end of the emergency pull rod. The front of the inner shell component is provided with a transparent plate, and the transparent plate is provided with holes. Further, the transparent plate is divided into two parts, fixed to the edge frame and the inner side plate, with a connection point between the edge frame and the inner side plate. The gap between the edge frame and the inner side plate is the hole. In case of emergency, the inner side plate can be pressed to dislodge it, at which point the lever can be released, causing the latch to descend.

[0007] Preferably, the active component includes a main board, the upper part of which is bent to form a sleeve, and the locking tongue is slidably engaged in the sleeve.

[0008] Preferably, the upper part of the main board is punched and bent into a horizontally arranged bent section, and the lower end of the spring abuts against the bent section. The bent section supports the spring, keeping the locking tongue in an extended state.

[0009] Preferably, a limit post is provided at the upper end of the bent section, and a spring is sleeved on the limit post. A screw is inserted through the lower end of the bent section, and the screw is threaded onto the limit post. The screw is used to limit the post, and the limit post prevents the spring from falling off.

[0010] Preferably, the lower side of the main board is provided with a first folded edge, and both the upper and lower parts of the first folded edge are provided with insertion holes. An electromagnet is provided inside the outer casing, and the output end of the electromagnet cooperates with the insertion holes. The electromagnet and the insertion holes limit and fix the driving component, and there are two insertion holes, that is, the locking tongue has two working states: upper position and lower position.

[0011] Preferably, the main board has a second folded edge in the middle, and the rack includes a plate body with a connecting hole. The second folded edge and the connecting hole cooperate with each other. That is, the rack is fixed to the driving member through the connecting hole and the second folded edge.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The device is equipped with a bending section, spring, emergency pull rod, and sliding latch. In case of emergency, pulling down the emergency pull rod compresses the spring, causing the latch to slide down and retract from the keyhole. At this time, the device is in the "unlocked" state, and the car door can be opened. In addition, the lever at the lower end of the emergency pull rod is located between the inner shell and the transparent panel to prevent passengers from operating it directly.

[0014] 2. It is equipped with a drive motor, electromagnet, and active component. The active component moves up and down with the drive motor, and the locking tongue on it also moves accordingly to realize the "locking" or "unlocking" of the door. In addition, the electromagnet, in conjunction with the socket on the active component, realizes the limit of the active component. Since the device is electrically controlled, it prevents passengers from accidentally opening the door. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 This is a bottom view of the present invention;

[0017] Figure 3 This is an exploded view of the present invention;

[0018] Figure 4 This is a three-dimensional schematic diagram of the active component of this utility model;

[0019] Figure 5 This is a schematic diagram of the drive motor of this utility model;

[0020] Figure 6 This is a schematic diagram of the rack of this utility model.

[0021] List of reference numerals in the attached diagram:

[0022] 1. Outer shell; 2. Transparent panel; 3. Locking tongue; 4. Opening; 5. Inner shell; 6. Pulley; 7. Electromagnet; 8. Driving component; 9. Drive motor; 10. Rack; 11. Spring; 12. Limiting post; 13. Screw; 14. Emergency pull rod; 15. Gear;

[0023] 81. First fold; 82. Socket; 83. Main board; 84. Second fold; 85. Bending section; 86. Sleeve; 101. Board body; 102. Connecting hole. Detailed Implementation

[0024] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0025] like Figures 1 to 6 As shown, a safety device for preventing accidental opening of doors on a light rail trolley includes a housing 1, which is a sheet metal bending part. An active component 8 is provided inside the housing 1. A locking tongue 3 is movably mounted on the upper end of the active component 8. A spring 11 is provided on the lower end of the locking tongue 3. That is, the locking tongue 3 can slide up and down relative to the active component 8, and under the action of the spring 11, the locking tongue 3 extends upward.

[0026] A rack 10 is fixedly connected to one side of the driving component 8. A drive motor 9 is installed inside the housing 1. A gear 15 is fixedly connected to the output end of the drive motor 9. The gear 15 and the rack 10 mesh with each other. When the drive motor 9 is started, the driving component 8 is raised and lowered through the transmission of the gear 15 and the rack 10.

[0027] An emergency pull rod 14 is fixedly connected to the lower end of the locking tongue 3. In case of an emergency and if the device malfunctions, the locking tongue 3 can be lowered and retracted from the keyhole by pulling down the emergency pull rod 14.

[0028] The outer casing 1 has an inner casing 5 on its front side. One end of the emergency pull rod 14 extends into the inner casing 5. A lever 6 is located inside the inner casing 5 and is fixedly connected to the end of the emergency pull rod 14. By pressing down on the lever 5, i.e., pulling down the emergency pull rod 14, the latch 3 slides downwards. The inner casing 5 has a transparent plate 2 on its front side, and the transparent plate 2 has holes. Pressing down on the center of the transparent plate 2 separates the central plate, exposing the lever 6, allowing operation.

[0029] The active component 8 includes a main board 83, the upper part of which is bent to form a sleeve 86. The locking tongue 3 is slidably engaged in the sleeve 86, that is, the sleeve 86 encloses the locking tongue 3 inside.

[0030] The upper part of the main board 83 is punched and bent into a horizontal shape, with a bending section 85. The lower end of the spring 11 abuts against the bending section 85. That is, the bending section 85 supports the spring 11 from below, ensuring that the locking tongue 3 remains in an upward-extending state.

[0031] A limit post 12 is provided at the upper end of the bent section 85, and a spring 11 is sleeved on the limit post 12. That is, the limit post 12 restricts the position of the spring 11 and prevents it from falling off. A screw 13 is inserted at the lower end of the bent section 85, and the screw 13 is threaded onto the limit post 12. The limit post 12 is fixedly connected to the bent section 85 by the screw 13.

[0032] The lower side of the motherboard 83 is provided with a first folded edge 81. The upper and lower parts of the first folded edge 81 are provided with sockets 82, that is, two sockets 82 are provided, that is, the active component 8 has two working positions, upper and lower. The inside of the outer shell 1 is provided with an electromagnet 7, and the output end of the electromagnet 7 cooperates with the socket 82. The output end of the electromagnet 7 extends out and is inserted into the socket 82 to limit the active component 8 and reverse movement.

[0033] The motherboard 83 has a second folded edge 84 in the middle. The rack 10 includes a board body 101, on which a connecting hole 102 is provided. The second folded edge 84 and the connecting hole 102 cooperate with each other. That is, the rack 10 is fixedly connected to the second folded edge 84 by plugging in.

[0034] Working principle: When in use, the device is fixedly connected to the car door, and the opening 4 reserved at the bottom of the outer shell 1 is used to fix the control cable. When the vehicle is running, the electromagnet 7 is energized and its output end retracts from the upper socket 82, driving the motor 9 to work. Through the gear 15 and rack 10, the rotating part 8 rises, that is, the upper locking tongue 3 extends out and engages in the locking hole on the frame. Then the electromagnet 7 is recharged and its output end extends into the lower socket 82.

[0035] In case of an emergency, if it is necessary to open the car door, the transparent panel 2 is damaged, and then the lever 6 is pressed down. The emergency lever 14 is used to pull down the latch 3, so that the latch 3 retracts from the lock hole.

[0036] The technical means disclosed in this utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A safety device for preventing accidental door opening during the operation of a lightweight railcar, characterized in that, Includes a housing (1), inside which is provided an active member (8), the upper end of the active member (8) is provided with a locking tongue (3) that moves up and down, and the lower end of the locking tongue (3) is provided with a spring (11). A rack (10) is fixedly connected to one side of the active component (8), and a drive motor (9) is provided inside the outer shell (1). A gear (15) is fixedly connected to the output end of the drive motor (9), and the gear (15) and the rack (10) mesh with each other. An emergency pull rod (14) is fixedly connected to the lower end of the locking tongue (3).

2. The safety device for preventing accidental door opening during the operation of a light rail trolley according to claim 1, characterized in that: The outer shell (1) has an inner shell component (5) on its front side. One end of the emergency pull rod (14) extends into the interior of the inner shell component (5). The inner shell component (5) has a lever (6) inside it, and the lever (6) is fixedly connected to the end of the emergency pull rod (14). The inner shell component (5) has a transparent plate (2) on its front side, and the transparent plate (2) has holes.

3. The safety device for preventing accidental door opening during the operation of a light rail trolley according to claim 1, characterized in that: The active component (8) includes a main board (83), the upper part of which is bent to form a sleeve (86), and the locking tongue (3) is slidably engaged in the sleeve (86).

4. The safety device for preventing accidental door opening during the operation of a light rail trolley according to claim 3, characterized in that: The upper part of the main board (83) is punched and bent into a horizontally arranged bending section (85), and the lower end of the spring (11) abuts against the bending section (85).

5. The safety device for preventing accidental door opening during the operation of a light rail trolley according to claim 4, characterized in that: The upper end of the bent section (85) is provided with a limiting post (12), and the spring (11) is sleeved on the limiting post (12). The lower end of the bent section (85) is provided with a screw (13), and the screw (13) is threaded onto the limiting post (12).

6. The safety device for preventing accidental door opening during the operation of a light rail trolley according to claim 3, characterized in that: The motherboard (83) has a first folded edge (81) on one side of its lower part. The upper and lower parts of the first folded edge (81) are provided with sockets (82). The outer shell (1) is provided with an electromagnet (7), and the output end of the electromagnet (7) is matched with the socket (82).

7. The safety device for preventing accidental door opening during the operation of a light rail trolley according to claim 3, characterized in that: The motherboard (83) has a second folded edge (84) in the middle. The rack (10) includes a plate body (101) and a connecting hole (102) is provided on the plate body (101). The second folded edge (84) and the connecting hole (102) cooperate with each other.

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