Rail transit half-height door electromagnetic lock

Abstract

The utility model relates to the technical field of subway half -height door electromagnetic lock provides a track traffic half -height door electromagnetic lock, include: installation bottom plate, side mounting plate, electric appliance connector, unlocking position sensor, locking position sensor, electromagnetic lock shell, lock bar, electromagnetic coil, reset spring and oil seal shaft sleeve, the electromagnetic lock shell fixed mounting is in installation bottom plate, and side mounting plate sets up in electromagnetic lock shell one side, and electric appliance connector, unlocking position sensor and locking position sensor install in side mounting plate outside, and the inductive end of unlocking position sensor sets up in half -height door closed position top, and the inductive end of locking position sensor sets up in lock bar unlocking position front side, and the lock bar is through reset spring and is slidably arranged in the electromagnetic lock shell, and the electromagnetic coil sets up in lock bar top, the utility model discloses reasonable in structure, convenient to dismouting, electromagnetic lock control is stable, and the service life is long.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic locks for half-height doors in subways, and in particular to an electromagnetic lock for half-height doors in rail transit. Background Technology

[0002] An electromagnetic lock for platform screen doors is a locking mechanism used to lock sliding doors to prevent them from being opened by external factors such as wind pressure. An electromagnetic lock device can lock a sliding door and mainly consists of an electromagnetic lock coil, a lock rod transmission mechanism, and locking and unlocking position sensors. Due to the structural differences of half-height platform screen doors, electromagnetic locks used on half-height platform screen doors are divided into left and right sides; their functions are the same, but their structures differ somewhat.

[0003] As disclosed in application number CN202320599873.3, a quick-release structure for an electromagnetic lock on a subway half-height door belongs to the technical field of electromagnetic lock fixing devices. It includes an electromagnetic lock and a quick-release assembly. The electromagnetic lock is fixed on the quick-release assembly. The quick-release assembly includes a perforated corner piece and an irregular corner bracket. The perforated corner piece covers the irregular corner bracket. The perforated corner piece includes an irregular corner bracket fixing area and an electromagnetic lock fixing area. An adjustment elongated hole is provided in the irregular corner bracket fixing area. An opening is provided on the irregular corner bracket at a position corresponding to the adjustment elongated hole. A first fixing bolt is provided in the adjustment elongated hole and the opening for fixing. An electromagnetic lock fixing component is provided on the outside of the electromagnetic lock.

[0004] However, in existing electromagnetic lock devices, the electromagnetic coil and the locking rod are parallel and are driven by a connecting plate. This causes the direction of the force on the torque locking rod to shift over time, affecting the stability of the electromagnetic lock. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a semi-high electromagnetic lock for rail transit doors.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An electromagnetic lock for a half-height door in rail transit includes: a mounting base plate, a side mounting plate, an electrical connector, an unlock position sensor, a lock position sensor, an electromagnetic lock housing, a locking rod, an electromagnetic coil, a return spring, and an oil seal bushing. The electromagnetic lock housing is fixedly mounted on the mounting base plate, and the side mounting plate is located on one side of the electromagnetic lock housing. The electrical connector, the unlock position sensor, and the lock position sensor are mounted on the outside of the side mounting plate. The sensing end of the unlock position sensor is located above the closed position of the half-height door, and the sensing end of the lock position sensor is located in front of the unlock position of the locking rod. The upper end of the locking rod is connected to the electromagnetic lock housing through the return spring, and the lower end of the locking rod is slidably connected to the bottom of the electromagnetic lock housing through the oil seal bushing. The electromagnetic coil is located above the locking rod.

[0008] Preferably, the electrical connector includes a power connector and a sensor connector, wherein the power connector is connected to an external power source, and the sensor connector is electrically connected to an unlocking sensor and a locking sensor.

[0009] Preferably, the electromagnetic lock housing is provided with a lock rod position detection hole, and the sensing end of the lock position sensor extends into the detection hole to monitor the lock rod position.

[0010] Preferably, the mounting base plate is provided with a mounting flange, and the mounting base plate is connected to the fixed side box of the half-height door through the mounting flange. The mounting flange is provided with an adjustment elongated hole. The mounting base plate is also provided with an electromagnetic lock housing mounting hole and a side mounting plate mounting hole.

[0011] Preferably, the upper end of the locking rod is provided with a mounting plate, the upper end of the return spring is fixedly connected to the lower side of the mounting plate, and the lower end of the return spring is fixedly connected to the bottom of the electromagnetic lock housing.

[0012] Preferably, the sliding stroke of the locking rod is 9±0.5mm, and the locking rod is made of 304 stainless steel.

[0013] Preferably, a sealing gasket is provided at the connection points of each component.

[0014] Preferably, the oil seal bushing is made of brass, and the oil seal bushing contains high-temperature resistant lubricating oil.

[0015] The advantages of this utility model are as follows: This utility model has a reasonable structure and is easy to use. It uses an electromagnetic coil to pull up the locking rod, and a return spring to keep the locking rod locked on the half-height door. The side mounting plate facilitates the installation of electrical connectors, unlocking position sensors, and locking position sensors, thus facilitating disassembly and maintenance. The unlocking position sensor is used to detect whether the sliding door is closed, thereby controlling the opening and closing of the electromagnetic coil. The locking position sensor is used to detect whether the locking rod is pushed up, thereby determining whether it is a manual operation. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0017] Figure 1 This is the front view of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the electromagnetic lock of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the mounting base plate of this utility model;

[0020] Figure 4This is a structural schematic diagram of the electromagnetic lock housing and mounting base plate of this utility model;

[0021] Figure 5 This is a structural schematic diagram of the side mounting plate and mounting base plate of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Mounting base plate; 2. Side mounting plate; 3. Electrical connector; 4. Unlock position sensor; 5. Lock position sensor; 6. Electromagnetic lock housing; 7. Locking rod; 8. Electromagnetic coil; 9. Return spring; 10. Oil seal bushing; 31. Power connector; 32. Sensor connector; 61. Detection hole; 11. Mounting flange; 12. Adjustment elongated hole; 13. Electromagnetic lock housing mounting hole; 14. Side mounting plate mounting hole; 71. Mounting plate. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1, combined with Figure 1 , Figure 2 , Figure 4 andFigure 5 Explanation:

[0028] An electromagnetic lock for a semi-high door in rail transit includes: a mounting base plate 1, a side mounting plate 2, an electrical connector 3, an unlock position sensor 4, a lock position sensor 5, an electromagnetic lock housing 6, a locking rod 7, an electromagnetic coil 8, a return spring 9, and an oil seal bushing 10. The electromagnetic lock housing 6 is fixedly mounted on the mounting base plate 1. By setting separate mounting base plate 1 and side mounting plate 2, the entire electromagnetic lock unit can be more flexibly installed on the door frame or the wall next to the track. Installers can fix the mounting base plate 1 and side mounting plate 2 separately according to the site conditions, making the operation relatively simple and the installation space requirements relatively flexible.

[0029] The side mounting plate 2 is located on one side of the electromagnetic lock housing 6. The electrical connector 3, the unlock position sensor 4, and the lock position sensor 5 are installed on the outside of the side mounting plate 2. By centrally installing the electrical connector 3, the unlock position sensor 4, and the lock position sensor 5 on the outside of the side mounting plate 2, it is convenient for the connection, inspection, and maintenance of the wiring.

[0030] The sensing end of the unlocking sensor 4 is located above the half-height door closed position, and the sensing end of the locking sensor 5 is located in front of the unlocking position of the locking rod 7. Through the precise setting of the sensors, the accuracy of the electromagnetic lock opening and closing is improved, preventing the door from being locked before it is fully closed.

[0031] The sliding stroke of the locking rod 7 is 9±0.5mm. The locking rod 7 is made of 304 stainless steel, which can prevent rust.

[0032] Sealing gaskets are installed at the joints of each component, and sealing gaskets are added between components to enhance the sealing performance.

[0033] The upper end of the locking rod 7 is connected to the electromagnetic lock housing 6 via a return spring 9, and the lower end of the locking rod 7 is slidably connected to the bottom of the electromagnetic lock housing 6 via an oil seal bushing 10. The electromagnetic coil 8 is located above the locking rod 7, with a coil impedance of 70Ω±10%. When the electromagnetic coil 8 is not energized, the return spring 9 will automatically push the locking rod 7 back to the default locked position. This design is simple and reliable, ensuring that the locking rod 7 can automatically return to a safe state in the event of a power outage or a malfunction of the electromagnetic coil 8.

[0034] The electrical connector 3 includes a power connector 31 and a sensor connector 32. The power connector 31 is connected to an external power source, and the sensor connector 32 is electrically connected to the unlock position sensor 4 and the lock position sensor 5.

[0035] The electromagnetic lock housing 6 is provided with a locking rod 7 position detection hole 61, and the sensing end of the locking position sensor 5 extends into the detection hole to monitor the position of the locking rod 7.

[0036] The oil seal bushing is made of brass and contains high-temperature resistant lubricating oil, which reduces dust, water droplets, and water vapor from entering through this location.

[0037] Example 2, based on Example 1, combined with... Figure 3 Explanation:

[0038] The mounting base plate 1 is provided with a mounting flange 11, which connects to the fixed side box of the half-height door. The mounting flange 11 has an adjustment elongated hole 12. The mounting base plate 1 also has an electromagnetic lock housing mounting hole 13 and a side mounting plate mounting hole 14. This design provides a larger contact area and a more reliable mechanical connection point than a flat surface, allowing the electromagnetic lock to be more securely fixed to the fixed side box of the half-height door, reducing potential positional shifts or loosening due to vibration or impact. The adjustment elongated hole 12 is used to adjust the mounting position of the mounting base plate 1. The electromagnetic lock housing mounting hole 13 and the side mounting plate mounting hole 14 provide accurate mounting positions for the electromagnetic lock housing and the side mounting plate.

[0039] Example 3, based on Example 2, combined with Figure 2 Explanation:

[0040] The upper end of the locking rod 7 is provided with a mounting plate 71, the upper end of the return spring 9 is fixedly connected to the lower side of the mounting plate 71, and the lower end of the return spring 9 is fixedly connected to the bottom of the electromagnetic lock housing 6.

[0041] The return spring 9 is used to ensure that the locking rod 7 remains in the locked position when no external force is applied.

[0042] The working principle of this utility model is as follows: During use, the electromagnetic lock performs an engaging action during the door opening process. When the door control unit receives the door opening command from the central interface panel, the door control unit activates the electromagnetic coil 8, and the locking rod 7 is pulled up before the motor actuates. During the door closing process, the electromagnetic lock performs a locking action. When the half-height door is closed and the unlocking position sensor 4 detects the position signal, the door control unit deactivates the electromagnetic coil 8, and the locking rod 7 falls to the locked position under the force of the return spring 9. When a passenger or station staff manually opens the half-height door, the locking rod 7 is pushed up by the mechanical components, and the door control unit detects the manual operation through the locking position sensor 5. If the electromagnetic coil 8 fails to drive due to station power failure, door control unit failure, etc., the locking rod 7 falls down under the spring force and remains in the half-height door locked position. This utility model has a reasonable structure, is easy to disassemble and assemble, has stable electromagnetic lock control, and a long service life.

[0043] For those skilled in the art, this utility model is not limited to the details of the exemplary embodiments described above, and can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model; therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present utility model should be included within the protection scope of the technical solution of the present utility model.

Claims

1. An electromagnetic lock for a half-height door in rail transit, characterized in that, include: The mounting base (1), side mounting plate (2), electrical connector (3), unlock position sensor (4), lock position sensor (5), electromagnetic lock housing (6), lock rod (7), electromagnetic coil (8), return spring (9) and oil seal bushing (10) are installed. The electromagnetic lock housing (6) is fixedly installed on the mounting base (1). The side mounting plate (2) is set on one side of the electromagnetic lock housing (6). The electrical connector (3), unlock position sensor (4) and lock position sensor (5) are installed on the outside of the side mounting plate (2). The sensing end of the unlock position sensor (4) is set above the half-height door closed position. The sensing end of the lock position sensor (5) is set in front of the unlock position of the lock rod (7). The upper end of the lock rod (7) is connected to the electromagnetic lock housing (6) through the return spring (9). The lower end of the lock rod (7) is slidably connected to the bottom of the electromagnetic lock housing (6) through the oil seal bushing (10). The electromagnetic coil (8) is set above the lock rod (7).

2. The electromagnetic lock for a semi-high door in rail transit according to claim 1, characterized in that, The electrical connector (3) includes a power connector (31) and a sensor connector (32). The power connector (31) is connected to an external power source, and the sensor connector (32) is electrically connected to an unlocking sensor (4) and a locking sensor (5).

3. The electromagnetic lock for a semi-high door in rail transit according to claim 1, characterized in that, The electromagnetic lock housing (6) is provided with a locking rod (7) position detection hole (61), and the sensing end of the locking position sensor (5) extends into the detection hole to monitor the position of the locking rod (7).

4. The electromagnetic lock for a semi-high door in rail transit according to claim 1, characterized in that, The mounting base plate (1) is provided with a mounting flange (11), and the mounting base plate (1) is connected to the fixed side box of the half-height door through the mounting flange (11). The mounting flange (11) is provided with an adjustment elongated hole (12). The mounting base plate (1) is also provided with an electromagnetic lock housing mounting hole (13) and a side mounting plate mounting hole (14).

5. The electromagnetic lock for a semi-high door in rail transit according to claim 1, characterized in that, The upper end of the locking rod (7) is provided with a mounting plate (71), the upper end of the return spring (9) is fixedly connected to the lower side of the mounting plate (71), and the lower end of the return spring (9) is fixedly connected to the bottom of the electromagnetic lock housing (6).

6. The electromagnetic lock for a semi-high door in rail transit according to claim 1, characterized in that, The sliding stroke of the locking rod (7) is 9±0.5mm, and the locking rod (7) is made of 304 stainless steel.

7. The electromagnetic lock for a semi-high door in rail transit according to claim 1, characterized in that, Sealing gaskets are installed at the joints of each component.

8. The electromagnetic lock for a semi-high door in rail transit according to claim 1, characterized in that, The oil seal bushing (10) is made of brass, and the oil seal bushing (10) is filled with high-temperature resistant lubricating oil.

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