Rail transit door lock device

Abstract

The utility model discloses a rail transit door lock device, including mounting seat, transmission plate, side surface positioning wheel, lock pin, guide rail, switch, connecting rod one and connecting rod two, one side of transmission plate is connected with connecting rod one, connecting rod two through short axle, forms hinged point no.

Description

Technical Field

[0001] This utility model relates to the field of rail transit door systems, and in particular to a rail transit door lock device. Background Technology

[0002] In existing rail transit door systems, locking devices mostly use independent motors or cylinders for control, resulting in complex structures, large space requirements, and high costs. A few locking devices do not require a power source such as a motor or cylinder, but the locking method is passive, lacking active locking force on the door leaf. This makes it impossible to overcome the rebound force of the door leaf sealing strip, resulting in a lack of airtightness in the door system and making it unsuitable for higher operating speed requirements.

[0003] Therefore, it is necessary to develop new types of rail transit door lock devices to overcome the above problems. Utility Model Content

[0004] Purpose of the utility model: To address the shortcomings and defects of the existing technology, this utility model provides a rail transit door lock device that does not require a dedicated motor or cylinder for the door lock. Instead, it directly utilizes the torque output from the drive motor or cylinder on the top mechanism of the door or other structures. The door lock has an active locking function and can provide sufficient active clamping force to the door leaf. This clamping force can overcome the rebound force of the door leaf sealing strip. The door system has airtight performance and is suitable for the door requirements of vehicles with higher operating speed levels.

[0005] Technical solution: The rail transit door lock device of this utility model is characterized by: including a mounting base, a transmission plate, a side positioning wheel, a locking pin, a guide rail, a switch, a connecting rod one, and a connecting rod two; one side of the transmission plate is connected to connecting rod one and connecting rod two through a short shaft to form hinge point one; one end of connecting rod two is connected to the transmission plate, and the other end of connecting rod two is connected to the locking pin to form hinge point two, and connecting rod two is connected to the mounting base to form a fixed point; the locking pin is connected to the guide rail, and the locking pin moves linearly to the left in a fixed groove of the mounting base.

[0006] The other side of the transmission plate is connected to a motor or cylinder on the top mechanism of the door or other structures of the door.

[0007] The locking pin is connected to the guide rail by bolts.

[0008] The rollers on the locking pin correspond to the tracks on the door leaf, causing the door leaf to move with the locking pin.

[0009] The door panel is located within the rail transit door system.

[0010] The mounting base is equipped with a side positioning wheel and a switch.

[0011] Beneficial Effects: Compared with existing technologies, this utility model has the following significant advantages: This utility model proposes a simple, small-sized, and low-cost door locking device. It eliminates the need for a dedicated motor or cylinder for the door lock, directly utilizing the torque output from a drive motor or cylinder on the top mechanism or other structure of the door. Furthermore, the door lock has an active locking function, providing sufficient active clamping force to the door leaf. This clamping force overcomes the rebound force of the door leaf sealing strip, ensuring airtightness of the door system, making it suitable for vehicles operating at higher speeds. After locking, the door lock enters a mechanical dead-point position, ensuring secure locking independent of the drive motor, resulting in higher safety and reliability. Simultaneously, the door lock device, in conjunction with the slide rail installed on the door leaf, provides lower guidance for the opening and closing actions. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the locked state of this utility model. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the unlocked state of this utility model. Figure 1 ;

[0014] Figure 3 This is a schematic diagram of the locked state of this utility model. Figure 2 ;

[0015] Figure 4 This is a schematic diagram of the unlocked state of this utility model. Figure 2 ;

[0016] In the diagram, 1 is the mounting base; 2 is the transmission plate; 3 is the side positioning wheel; 4 is the locking pin; 5 is the guide rail; 6 is the switch; 7 is the first connecting rod; 8 is the second connecting rod; 9 is the fixing point; 10 is the first hinge point; and 11 is the second hinge point. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] The door lock device of this utility model has an active locking function, providing an active pressing and locking point for the lower part of the door system. Simultaneously, the door lock device can be installed on the lower rear side of the door leaf, forming a lower guide system for the door system together with the sliding track installed on the door leaf.

[0019] The door lock device mainly consists of a mounting base 1, a guide rail 5, a locking pin 4, a side positioning wheel 3, a transmission plate 2, a first connecting rod 7, and a second connecting rod 8. It has both mechanical locking and transmission guiding functions. The door lock device is equipped with a limit switch, which can issue a safety locking signal when the door is in the locked position. The locking pin 4 is connected to the first connecting rod 7 by a shaft, forming a hinge point 10 that can move along a fixed track. The first connecting rod 7, the second connecting rod 8, and the transmission plate 2 are connected by a shaft, forming a movable hinge point 11. The other end of the second connecting rod 8 is mounted on the mounting base 1, forming a rotatable fixed point 9. The transmission plate 2 is connected to the top mechanism of the car door, transmitting the torque output from the top mechanism's drive motor to the locking device. That is, the transmission plate 2 drives the first connecting rod 7 to move via hinge point 11, the first connecting rod 7 drives the locking pin 4 to move via hinge point 10, and the locking pin 4 drives the door leaf to move via a slide rail mounted on the door leaf. Finally, hinge point 10 moves to below the line connecting hinge point 2 11 and fixed point 9, forming a mechanical dead point position, and the door closes and locks in place.

[0020] like Figure 1 , 2 As shown, the locking device in this utility model includes a mounting base 1, a transmission plate 2, a side positioning wheel 3, a locking pin 4, a guide rail 5, a switch 6, a connecting rod 1 7, a connecting rod 2 8, a fixing point 9, a hinge point 1 10, and a hinge point 2 11.

[0021] One side of the transmission plate 2 is connected to connecting rod 7 and connecting rod 8 via a short shaft, forming hinge point 10. One end of connecting rod 8 is connected to the transmission plate 2, and the other end is mounted on the mounting base 1, forming a fixed point 9. One end of connecting rod 7 is connected to the transmission plate 2, and the other end is connected to the locking pin 4, forming hinge point 11. The other side of the transmission plate 2 is connected to a power source such as a motor or cylinder on the top mechanism of the door or other structures of the door, and can be driven to move. The locking pin 4 is connected to the guide rail 5 by bolts, and can make directional linear movement in the fixed groove on the mounting base 1. The roller on the locking pin 4 cooperates with the slide rail on the door leaf, driving the door leaf to move with the locking pin 4, providing a lower guide for the opening and closing action, and performing the opening, closing, locking and unlocking actions.

[0022] like Figure 3 , 4 As shown, when locked, the transmission plate 2 connected to the power source drives the locking pin 4 (door leaf) to move via connecting rod 7 and connecting rod 8. Link point 11 moves within the fixed groove on the mounting base 1 until hinge point 10 moves below the line connecting hinge point 11 and fixed point 9, forming a mechanical dead point position, and the door leaf closes and locks in place. At this time, connecting rod 7 triggers switch 6, sending a lock-in signal.

[0023] When unlocking, the transmission plate 2, connected to the power source, drives the locking pin 4 (door leaf) to move via connecting rod 7 and connecting rod 8. Link point 11 moves within the fixed groove on the mounting base 1. Hinge point 10, pulled by the transmission plate 2, drives hinge point 11 to move, exiting the mechanical dead-point locking position and further pushing open the locking pin 4 (door leaf) to achieve the door opening action. Connecting rod 7 triggers switch 6, sending an unlocking / locking signal.

[0024] This invention proposes a simple, compact, and low-cost vehicle door locking device. It eliminates the need for a dedicated motor or cylinder for the lock, directly utilizing the torque output from a drive motor or cylinder on the top mechanism or other structure of the door. The lock features an active locking function, providing sufficient active clamping force to overcome the rebound force of the door's sealing strip. This ensures the door system has airtight performance, making it suitable for vehicles operating at higher speeds. Furthermore, once locked, the lock reaches a mechanical dead position, ensuring secure locking independent of the drive motor, resulting in enhanced safety and reliability. Simultaneously, the lock, in conjunction with a sliding track mounted on the door, provides lower guidance for the opening and closing actions.

Claims

1. A rail transit door locking device, characterized in that: It includes a mounting base (1), a transmission plate (2), a side positioning wheel (3), a locking pin (4), a guide rail (5), a switch (6), a connecting rod one (7), and a connecting rod two (8); one side of the transmission plate (2) is connected to the connecting rod one (7) and the connecting rod two (8) through a short shaft to form a hinge point one (10); one end of the connecting rod two (8) is connected to the transmission plate (2), and the other end of the connecting rod two (8) is connected to the locking pin (4) to form a hinge point two (11), and the connecting rod two (8) is connected to the mounting base (1) to form a fixed point (9); the locking pin (4) is connected to the guide rail (5), and the locking pin (4) moves linearly to the left in the fixed groove of the mounting base (1).

2. The rail transit door lock device according to claim 1, characterized in that: The other side of the transmission plate (2) is connected to the motor or cylinder on the top mechanism of the door or other structure of the door.

3. The rail transit door lock device according to claim 1, characterized in that: The locking pin (4) is connected to the guide rail (5) by bolts.

4. The rail transit door lock apparatus according to claim 1, wherein: The rollers on the locking pin (4) correspond to the slide rails on the door leaf, causing the door leaf to move with the locking pin (4).

5. The rail transit door lock device according to claim 4, characterized in that: The door is located within the rail transit door system.

6. The rail transit door lock apparatus according to claim 1, wherein: The mounting base (1) is provided with a side positioning wheel (3) and a switch (6).

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