Door leaf external unlocking device

Abstract

The utility model discloses a door leaf external unlocking device which comprises a lock cylinder arranged on a door leaf, a trigger plate and an external operation rotating arm arranged on the top of a vehicle body and connected with a door leaf locking piece, the trigger plate is arranged on the top of the door leaf, and when the door leaf is closed, the trigger plate is located below the external operation rotating arm. The lock cylinder penetrates into the door leaf and is connected with the trigger plate through the steel wire rope assembly, the lock cylinder is rotated, the trigger plate rotates, the outer operation rotating arm is pushed to rotate, and the door leaf is unlocked. Transmission devices are respectively arranged on the door leaf and the vehicle body, and when the door leaf is opened, the transmission devices are separated and are mutually independent; when the door leaf is closed, the transmission device is closed to form continuous transmission without being limited by the door leaf, the structure is simple, and assembly is easy.

Description

Technical Field

[0001] The utility model relates to a door leaf unlocking device, in particular to an external door leaf unlocking device. Background Art

[0002] When installing the door leaf unlocking device, it is necessary to consider the door leaf opening situation, because the relative position of the door leaf and the vehicle body will change. Therefore, in the prior art, the unlocking device used for rail transit vehicle doors is installed on the vehicle body and interior, and the main structure is divided into two types: rotary type and pull-down type. The principle is to use the key to turn the lock cylinder clockwise to the unlocking state, drive the wire rope assembly to move, and then the door can be manually opened. For example, the invention patent application with publication number CN 109594867 A discloses an emergency unlocking device for a vehicle door system.

[0003] The unlocking device is installed on the door leaf, and the interface size needs to be determined according to the door leaf positioning. If the existing support types cannot meet the requirements, the mold needs to be re-opened, which takes a long time. Utility Model Content

[0004] Purpose of the utility model: The purpose of the utility model is to provide an external door leaf unlocking device that is universal for a variety of door leaves.

[0005] Technical solution: The utility model describes an external unlocking device for a door leaf, comprising a lock core and a trigger plate arranged on the door leaf, and an external operating arm arranged on the top of the vehicle body and connected to the door leaf locking member. The trigger plate is arranged at the top of the door leaf. When the door leaf is closed, the trigger plate is located below the external operating arm. The lock core penetrates the door leaf and is connected to the trigger plate through a wire rope assembly. By rotating the lock core, the trigger plate rotates, pushing the external operating arm to rotate, and the door leaf is unlocked.

[0006] The transmission devices are installed on the door leaf and the car body respectively. When the door leaf is opened, the transmission devices are separated and independent of each other; when the door leaf is closed, the transmission devices are closed to form continuous transmission, which is not limited by the door leaf itself, has a simple structure and is easy to assemble.

[0007] Preferably, a rotating arm is provided at one end of the lock core that penetrates the door leaf, and an adjuster is provided at one end of the wire rope assembly close to the lock core. The adjuster is located below the rotating arm, and the rotating arm presses down the adjuster to drive the trigger plate to rotate. The adjuster connects the wire rope assembly to the lock core and is used to adjust the effective length of the wire rope assembly.

[0008] Preferably, a first torsion spring for resetting is provided on the rotating arm.

[0009] Preferably, the adjuster comprises a mounting block and a bolt, the mounting block is slidably connected to the wire rope assembly, the bolt is inserted into the mounting block along a vertical direction of the sliding of the mounting block, and the end portion abuts against the wire rope assembly.

[0010] Preferably, the external operating rotating arm is connected to the vehicle body via a mounting frame, a limit rod for limiting the rotation range of the external operating rotating arm is provided on the mounting frame, and a second torsion spring is provided between the external operating rotating arm and the mounting frame.

[0011] Preferably, the rotating surface of the trigger plate is parallel to the moving direction of the wire rope assembly, and the trigger end of the trigger plate close to the external operating rotating arm is provided with an extension plate perpendicular to the rotating surface of the trigger plate. The extension plate makes the installation position of the rotating arm constant and fills the gap between the trigger plate and the external operating rotating arm, which is convenient for installation.

[0012] Preferably, the trigger plate is connected to the door leaf through a fixing plate, the fixing plate is a strip-shaped plate with a through hole in the middle, the trigger plate is rotatably connected to the lower surface of the fixing plate, and the trigger plate rotates to trigger the external operating rotating arm through the through hole.

[0013] Preferably, the epitaxial plate is located on the upper surface of the fixed plate.

[0014] Preferably, a third torsion spring is provided between the trigger plate and the fixing plate.

[0015] Preferably, the unlocking device also includes a steering wheel for reversing, and a support for supporting the rotation of the steering wheel, and the steering wheel is circumferentially provided with a guide groove that cooperates with the wire rope assembly.

[0016] Beneficial effects: Compared with the prior art, the utility model has the following advantages: 1. It is universal for various types of door leaves; 2. It has a simple structure; 3. It is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model in an assembled state;

[0018] Figure 2 It is a schematic diagram of the outer structure of part of the driving mechanism of the utility model;

[0019] Figure 3 It is a schematic diagram of the inner structure of part of the driving mechanism of the utility model;

[0020] Figure 4 This is a first-person perspective view of the assembly state of the trigger plate and the unlocking mechanism when the door leaf is closed;

[0021] Figure 5 A second perspective view of the assembly state of the trigger plate and the unlocking mechanism when the door leaf is closed;

[0022] Figure 6 This is a schematic diagram of the steering wheel structure of the utility model;

[0023] Figure 7 It is a schematic diagram of the assembly structure of the drive mechanism and door leaf of the utility model. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.

[0025] like Figure 4 and 5 As shown, the door leaf external unlocking device of the present invention is mainly composed of a driving mechanism and an unlocking mechanism. The driving mechanism and the unlocking mechanism are respectively arranged on the door leaf and the vehicle body. When the door leaf is closed, the two are close to form a transmission chain.

[0026] The driving mechanism is arranged on the door leaf, and mainly comprises a lock cover 1, a rotating arm 2, a torsion spring 4, a lock core 13, a wire rope assembly 5, a trigger plate 8, a fixing plate 9, a steering wheel 6, and a support 7.

[0027] like Figure 1 and Figure 2 As shown, the lock cover 1, the rotating arm 2, the torsion spring 4, and the lock core 13 constitute the driving force input end of the driving mechanism. Specifically, the lock cover 1 and the lock box are embedded in the side of the door leaf, the bearing 3 is inside the lock box, and the lock core 13 passes through the lock cover 1 and is assembled with the bearing 3. The lock core 13 is fixedly connected to the rotating arm 2, and rotating the lock core 13 can drive the rotating arm 2 to rotate downward. A torsion spring 4 is arranged between the rotating arm 2 and the lock box 1, and the torsion spring 4 is used to reset the rotating arm 2.

[0028] like Figure 5 and Figure 6 As shown, the trigger plate 8 and the fixed plate 9 constitute the driving force output end of the driving mechanism. The fixed plate 9 is a strip plate with a through hole in the middle, which is installed on the top of the door leaf and can move with the door leaf; the trigger plate 8 is a special-shaped plate, mainly composed of an L-shaped plate and an extension plate. The corner of the L-shaped plate is rotatably connected to the fixed plate 9. The side branch I of the L-shaped plate located below the fixed plate 9 is connected to the wire rope assembly 5. The extension plate extends on the side branch II. With the rotation surface of the trigger plate 8 as a reference, the extension plate is perpendicular to the rotation surface of the L-shaped plate or forms a certain angle. When the trigger plate 8 rotates around the fixed plate, the side branch 2 can pass through the through hole and go around to the top of the fixed plate 9 to push the external operating arm 10 to rotate. The extension plate is used to increase the width of the L-shaped plate, make up for the gap between the trigger plate 8 and the unlocking mechanism, and overlap on the upper surface of the fixed plate 9 to maintain the installation state of the trigger plate 8.

[0029] The input and output ends of the driving mechanism are connected by a wire rope assembly 5, such as Figure 3 As shown, the wire rope assembly 5 is provided with an adjuster 14 near the lock core 13. The adjuster 14 is mainly composed of a mounting block and a bolt. The mounting block is slidably connected to the wire rope assembly 5. The bolt is inserted into the mounting block in a direction perpendicular to the sliding direction of the mounting block and abuts against the wire rope assembly 5 to fix the position of the adjuster 14. During assembly, the adjuster 14 is located below the rotating arm 2. The rotating arm rotates, pressing down the adjuster 14, and pulling the wire rope assembly 5 to move.

[0030] There can also be at least one reversing mechanism in the driving mechanism, which includes a reversing steering wheel 6. The steering wheel 6 is a pulley structure and is mounted on the vehicle body through a support 7. The steering wheel 6 is provided with grooves circumferentially for guiding and limiting the wire rope assembly 5 to prevent the wire rope assembly from slipping.

[0031] The unlocking mechanism includes an external operating arm 10 and a mounting frame 11. The external operating arm 10 and the mounting frame 11 are installed on the top of the vehicle body, close to the door leaf unlocking piece. The main body of the external operating arm 10 is L-shaped, and rotates with the mounting frame 11 at the corner. A connecting hole is opened on a side branch of the external operating arm 10, and is connected to the door leaf unlocking piece through the connecting hole and a steel wire rope (not shown). A limit rod parallel to the rotating axis of the external operating arm 10 is provided on the mounting frame 11, and a torsion spring 12 is installed between the external operating arm 10 and the mounting frame 11 for resetting the external operating arm 10.

[0032] During assembly, the outer operating rotating arm 10 and the mounting frame 11 are installed on the top of the vehicle body, and the outer operating rotating arm 10 is connected to the door leaf unlocking piece; close the door leaf, install the trigger plate 8 and the fixing plate 9 on the top of the inner side of the door leaf, adjust their positions, so that the extended plate of the trigger plate 8 is just below the triggering end of the outer operating rotating arm 10, and when the trigger plate 8 rotates, its extended plate is enough to lift the triggered end of the outer operating rotating arm 10, so that the outer operating rotating arm 10 rotates to a suitable height to unlock the door leaf; install the steering wheel 6 and the support 7 at a suitable position on the inner side of the door leaf, pull the wire rope assembly 5, so that one end of the wire rope assembly 5 is connected to the trigger plate 8 side branch I, and the other end bypasses the steering wheel 6 guide groove and extends into the lock box, install the regulator 14, place the regulator 14 under the rotating arm 2, close the lock box, and complete the assembly. The moving direction of the wire rope assembly 5 can be parallel to the rotating surface of the trigger plate 8 or form a certain angle, preferably parallel.

Claims

1. A door leaf external unlocking device, characterized in that: The invention comprises a lock cylinder (13) and a trigger plate (8) arranged on a door leaf, and an external operating rotating arm (10) arranged on the top of a vehicle body and connected to a door leaf locking member; the trigger plate (8) is arranged on the top of the door leaf, and when the door leaf is closed, the trigger plate (8) is located below the external operating rotating arm (10), the lock cylinder (13) penetrates the door leaf and is connected to the trigger plate (8) via a steel wire rope assembly (5), and the lock cylinder (13) is rotated to drive the trigger plate (8) to rotate, thereby pushing the external operating rotating arm (10) to rotate, and the door leaf is unlocked.

2. The door leaf external unlocking device according to claim 1, characterized in that: The end of the lock core (13) that penetrates the door leaf is provided with a rotating arm (2), and the end section of the wire rope assembly (5) close to the lock core is provided with an adjuster (14). The adjuster (14) is located below the rotating arm (2). The rotating arm (2) presses down the adjuster, driving the trigger plate (8) to rotate.

3. The door leaf external unlocking device according to claim 2, characterized in that: The rotating arm (2) is provided with a first torsion spring for resetting.

4. The door leaf external unlocking device according to claim 2, characterized in that: The adjuster (14) comprises a mounting block and a bolt, the mounting block is slidably connected to the wire rope assembly (5), the bolt is inserted into the mounting block along a vertical direction of the mounting block sliding, and the end of the bolt abuts against the wire rope assembly.

5. The door leaf external unlocking device according to claim 1, characterized in that: The external operating rotating arm (10) is connected to the vehicle body via a mounting frame (11); a limit rod for limiting the rotation range of the external operating rotating arm (10) is provided on the mounting frame (11); and a second torsion spring is provided between the external operating rotating arm (10) and the mounting frame (11).

6. The door leaf external unlocking device according to claim 1, characterized in that: The rotational surface of the trigger plate (8) is parallel to the moving direction of the wire rope assembly (5), and the trigger end of the trigger plate (8) close to the external operating rotating arm (10) is provided with an extension plate perpendicular to the rotational surface of the trigger plate (8).

7. The door leaf external unlocking device according to claim 6, characterized in that: The trigger plate (8) is connected to the door leaf via a fixing plate (9); the fixing plate (9) is a strip-shaped plate with a through hole in the middle; the trigger plate is rotatably connected to the lower surface of the fixing plate (9); the trigger plate (8) rotates to pass through the through hole to trigger the external operating rotating arm (10).

8. The door leaf external unlocking device according to claim 7, characterized in that: The extension plate is located on the upper surface of the fixed plate (9).

9. The door leaf external unlocking device according to claim 7, characterized in that: A third torsion spring is provided between the trigger plate (8) and the fixing plate (9).

10. The door leaf external unlocking device according to claim 1, characterized in that: The unlocking device further comprises a steering wheel (6) for reversing direction and a support (7) for supporting the steering wheel (6) to rotate. The steering wheel (6) is provided with a guide groove in the circumference thereof for cooperating with the wire rope assembly (5).

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