Electronic lock of shielding door

Abstract

The invention relates to an electronic lock of a shielding door, and aims to solve the technical problems that the structural design of the conventional similar product is relatively complicated, and a mode and a structure that a solenoid valve and a sliding block simultaneously trigger lock hooks on two sides to be linked are not adopted. An electromagnetic valve is arranged on a mounting plate on one side of a base of the electronic lock, a movable iron core of the electromagnetic valve extends out of the mounting plate and is connected with one end of a sliding block, and an electromagnetic valve reset spring is arranged on the outer diameter of the movable iron core at the joint; the key point is that the other end of the sliding block is bent towards the base and protrudes upwards to form an equilateral triangle, equilateral sides on two sides of the sliding block abut against a bearing at one end of a lock hook which is attached to the base and swings in the middle, the lock hook is L-shaped, and a hook portion of one side, extending outwards, of the other end of the lock hook is higher than and extends out of the edge of one side of the base. The lower portions of the hook parts are connected with plate columns of the base through lock hook reset springs, and an emergency unlocking rod is arranged on the mounting plate on one side of the movable iron core. And in an unlocking state or an emergency state, the hook part of the lock hook is withdrawn through the swinging of the lock hook and is lower than the edge of one side of the base.

Description

Technical Field

[0001] This invention relates to platform screen doors in subway and other rail transit stations, specifically an electronic lock for platform screen doors. Background Technology

[0002] Platform screen doors are continuous barrier door systems installed at the edge of train platforms to separate the platform area from the train operating area. Their main purpose is to ensure passenger safety, improve the waiting environment, and enhance operational efficiency. The core components of a platform screen door include the door structure, drive system, control system, and power system. The electronic lock of the platform screen door, often called the door operator unit lock or isolation lock, is the core safety device responsible for locking and isolating the single sliding door in the platform screen door system. The electronic lock is a complex component integrating an electromagnetic lock, position sensor, and mechanical device. Its main functions are: after the platform screen door is closed, it is generally locked securely by energizing an electromagnet to prevent accidental opening due to train piston wind or external pressure, and allows staff to perform malfunction or maintenance operations using a mechanical key. Simultaneously, the door operator needs to be released when the electromagnet is de-energized, subsequently driving the door to open. For example, the application number 201120564686.9 disclosed in Chinese patent documents, the authorization announcement date of September 12, 2012, and the utility model name "electronic lock for shielded door"; however, the above-mentioned products and similar products have relatively complex structural designs and rarely adopt the method and structure of triggering the locking hooks on both sides simultaneously with a solenoid valve and slider. Summary of the Invention

[0003] To overcome the above shortcomings, the purpose of this invention is to provide a shielded door electronic lock that solves the technical problems of existing similar products having complex structural designs and rarely using a single solenoid valve and slider to simultaneously trigger the locking hooks on both sides. This objective is achieved through the following technical solution.

[0004] An electronic lock for a shielded door includes a solenoid valve mounted on one side of its base. The moving iron core of the solenoid valve extends out of the mounting plate and connects to one end of a slider on the same side of the base. A solenoid valve return spring is provided on the outer diameter of the moving iron core at the connection point. The key structural design feature is that the other end of the slider bends towards the base while simultaneously protruding upwards in an equilateral triangle shape. The two equilateral sides of the slider abut against one end of a locking hook that swings against the base. The locking hook is L-shaped, with the curved portion in the middle of the hook fixed to the swinging portion of the base. The hook portion on the other side of the hook extends outwards, exceeding and extending beyond the edge of the base. A locking hook return spring is provided on the other side of the other end of the hook. One end of the locking hook return spring is connected to the hook portion of the hook, and the other end is connected to the inner side below the hook portion and the plate column on the same side of the base near the lower part of the curved portion. In the unlocked state or emergency state, the hook portion retracts through the swinging motion of the hook and falls below the edge of the base.

[0005] The outer corners of the hooks extending from both sides of the base are provided with beveled ends, and the inner corners are at a 90-degree right angle. Simultaneously, the edge of the hook on this side is flush with the edge of one side of the base. This structure further improves the force reset at the outer corner of the hook and the locking action at the inner corner of the hook.

[0006] The base has notches at one end of the sliders of the locking hooks on both sides, and bearings are installed in the notches. The locking hooks are engaged with or disengaged from the sliders via the bearings. In this structure, the bearings further improve the stability and service life of the locking hooks.

[0007] An emergency unlocking lever is provided on the mounting plate on one side of the solenoid valve's protruding moving iron core. One end of the main rod of the emergency unlocking lever is fixed to the mounting plate of the base by a retaining spring, and the other end of the main rod is connected to one end of a secondary rod on one side through a connecting plate. The other end of the secondary rod is inserted into the solenoid valve through the mounting plate of the base, driving the moving iron core to move in tandem. A spring is provided on the outer diameter of the main rod between the connecting plate and the mounting plate. The above structure is an embodiment in which the emergency unlocking lever drives the slider to move through the structure of inserting into the solenoid valve.

[0008] The main rod, connecting plate, or auxiliary rod of the emergency unlocking lever is connected to the slider on one side via a fixing plate. The above structure is an embodiment where another emergency unlocking lever drives the slider to move.

[0009] The mounting plate of the base at the protruding end of the moving iron core of the solenoid valve is provided with a fixing plate as an outer cover. The slider bent inside the fixing plate corresponds to the edge bent at one end of the fixing plate. The fixing plate is fixed to the base by the edge and the downward bent lugs on both sides.

[0010] The locking hook at one end of the slider inside the fixed plate is equipped with a positioning pin, and the two ends of the positioning pin pass through and are respectively set in the upper sliding hole of the fixed plate and the lower sliding hole of the base.

[0011] The positioning pin may be a protrusion integrally formed on both the upper and lower ends of the locking hook. The above structure is an embodiment of a protrusion integrally formed on both sides of the locking hook.

[0012] The base has bushings at the curved swing points of the locking hooks on both sides, and these bushings are fixed to the base by pins. This structure improves the flexibility of the locking hooks in the hinged swing position.

[0013] At least one side of the hook portion and / or the swinging part of the hook on both sides of the base plate, and the side below the slider, are respectively equipped with microswitches. When the hook swings into position or the slider moves into position, the corresponding microswitch is triggered. The microswitches in the above structure facilitate the monitoring of the hook and the various states of the electronic lock.

[0014] This invention features a reasonable structural design, low production cost, convenient assembly and installation, good stability and safety, and a wide range of applications. It is suitable for use as an electronic lock for platform screen doors in rail transit stations, as well as for structural improvements to similar products. Attached Figure Description

[0015] Figure 1 This is a partial exploded structural diagram of the present invention.

[0016] Figure 2 yes Figure 1 The diagram shows the assembled 3D structure, with the dotted lines representing the internal structure of the fixing plate.

[0017] Figure 3 yes Figure 2 A schematic diagram of the structure in its internally locked state.

[0018] Figure 4 yes Figure 3 A structural diagram of the internal unlocked state.

[0019] Figure 5 yes Figure 3 This is a structural diagram of the internal emergency configuration.

[0020] Attached Figure Numbers and Names: 1. Base, 101. Mounting Plate, 102. Plate Column, 103. Sliding Hole, 2. Slider, 3. Solenoid Valve Return Spring, 4. Emergency Unlocking Rod, 401. Main Rod, 402. Connecting Plate, 403. Spring, 404. Secondary Rod, 5. Fixing Plate, 501. Side, 502. Upper Sliding Hole, 6. Bearing, 7. Lock Hook, 701. Hook Part, 702. Protruding Column, 8. Bushing, 9. Pin, 10. Cover Plate, 11. Lock Hook Return Spring, 12. Solenoid Valve. Implementation

[0021] The structure and use of the present invention will now be further described with reference to the accompanying drawings. Figures 1-5 As shown, the electronic lock has a solenoid valve 12 on one side of the mounting plate 101 of the base 1. The moving iron core of the solenoid valve extends out of the mounting plate of the base and is connected to one end of the slider 2 on the same side of the base. The outer diameter of the moving iron core at the connection point is provided with a solenoid valve return spring 3. The other end of the slider bends towards the base and bulges upward in an equilateral triangle. The two equilateral sides of the slider abut against one end of the locking hook 7 that swings against the base. The locking hook is L-shaped. The curved part in the middle of the locking hook is fixed to the swinging part of the base. The hook part 701 on the other side of the locking hook extends outward and is higher than and extends beyond the edge of the base. The other side of the other end of the locking hook is provided with a locking hook return spring 11. One end of the locking hook return spring is connected to the hook part of the locking hook. The other end of the locking hook return spring is connected to the inner side below the hook part of the locking hook and the plate post 102 on the same side of the base near the lower part of the middle curved part. In the unlocked state or emergency state, the hook part of the locking hook retracts through the swinging of the locking hook and is lower than the edge of the base.

[0022] The outer corners of the hooks extending from both sides of the base have beveled ends, and the inner corners form a 90-degree right angle. Simultaneously, the edge of the hook on this side is flush with the edge of one side of the base. Each end of the slider of the hook on both sides of the base has a notch, and a bearing 6 is installed within each notch. The hooks abut against or disengage from the sliders via the bearings. An emergency unlocking lever 4 is installed on the mounting plate on one side of the moving iron core extending from the solenoid valve on the base. One end of the main rod 401 of the emergency unlocking lever is fixed to the mounting plate of the base by a retaining spring. The other end of the main rod is connected to one end of a secondary rod 404 on one side via a connecting plate 402. The other end of the secondary rod is inserted into the solenoid valve through the mounting plate of the base, driving the moving iron core in linkage. A spring 403 is installed on the outer diameter of the main rod between the connecting plate and the mounting plate.

[0023] The solenoid valve has a mounting plate 5 serving as an outer cover on the outer side of the mounting plate of the base at the protruding end of the moving iron core. The curved slider inside the mounting plate corresponds to the curved edge 501 at one end of the mounting plate. The mounting plate is fixed to the base by the edge and the downwardly curved lugs on both sides. The locking hook at one end of the slider inside the mounting plate is equipped with a positioning pin. The two ends of the positioning pin pass through and are respectively set in the upper sliding hole 502 of the mounting plate and the lower sliding hole 103 of the base; the positioning pin may be a protrusion 702 integrally formed at the upper and lower ends of the locking hook. The curved swinging part in the middle of the locking hook on both sides of the base is equipped with a bushing 8, which is fixed to the base by a pin 9.

[0024] The working principle of this electronic lock is as follows: When the shielded door is closed and in the locked state, in the event of a power outage, the moving iron core of the solenoid valve and the solenoid valve return spring push the slider, overcoming the force of the return springs on both sides of the lock hooks, pushing the lock hooks upwards, and the shielded door cannot be opened at this time; In the unlocked state, after power is applied, the solenoid valve is engaged, the slider moves downwards, and the lock hooks open to both sides due to the force of the moving iron core of the solenoid valve and the lock hook return springs, thus opening the shielded door; In the emergency state, that is, in the emergency (power outage or electronic failure) state, pressing the emergency unlocking lever causes the slider to move downwards together, and the lock hooks move to both sides due to the force of the moving iron core of the solenoid valve and the lock hook return springs, thus opening the shielded door.

[0025] Based on the above structural features, the main rod, connecting plate, or auxiliary rod of the above-mentioned emergency unlocking rod can also be connected to the slider via a fixing plate; furthermore, at least one side of the hook part and / or the swinging part of the locking hook on both sides of the base plate, and the lower side of the slider are respectively provided with micro switches, which are triggered when the locking hook swings into place or when the slider moves into place.

Claims

1. A shielded door electronic lock, the base (1) of the electronic lock is provided with an electromagnetic valve (12) on one side of the mounting plate (101), the moving iron core of the electromagnetic valve extends out of the mounting plate of the base and is connected to one end of the slider (2) on the side of the base, and the outer diameter of the moving iron core at the connection is provided with an electromagnetic valve return spring (3); characterized in that The other end of the slider (2) is bent towards the base (1) and protrudes upwards in the shape of an equilateral triangle. The two sides of the equilateral triangle are respectively in contact with one end of the hook (7) which is hinged to the base. The hook is in the shape of an L. The curved part in the middle of the hook is respectively fixed to the side of the base which is hinged. The other end of the hook protrudes outwards and one side of the hook (701) is higher than the edge of the side of the base. The other side of the other end of the hook is respectively provided with a hook reset spring (11). One end of the hook reset spring is respectively connected to the hook part of the hook. The other end of the hook reset spring is respectively connected to the hook part below the inside of the hook and the plate column (102) below the middle curved part of the side of the base. In the unlocked state or emergency state, the hook part of the hook is retracted through the swinging of the hook and is lower than the edge of the side of the base.

2. The screened door electronic lock of claim 1, wherein The outer side end of the hook part (701) of the hook (7) on both sides of the base (1) is provided with an inclined end face. The inside end is a 90-degree right angle. The edge of the side of the hook is flush with the edge of the side of the base.

3. The screened door electronic lock of claim 2, wherein One end of the slider (2) of the hook (7) on both sides of the base (1) is respectively provided with a notch. The notch is respectively provided with a bearing (6). The hook is respectively in contact with or disengaged from the slider through the bearing.

4. The screened door electronic lock of claim 1, wherein The side of the installation plate (101) where the moving iron core of the electromagnetic valve (12) protrudes is provided with an emergency unlocking rod (4). One end of the main rod (401) of the emergency unlocking rod is fixed to the installation plate of the base through a snap spring. The other end of the main rod is connected to one end of the side of the auxiliary rod (404) through the connecting plate (402). The other end of the auxiliary rod is inserted into the electromagnetic valve (12) through the installation plate of the base to drive the moving iron core. The outer diameter of the main rod between the connecting plate and the installation plate is provided with a spring (403).

5. The screened door electronic lock of claim 4, wherein One side of the main rod (401), the connecting plate (402) or the auxiliary rod (404) of the emergency unlocking rod (4) is connected to the slider (2).

6. The screened door electronic lock of claim 1, wherein The outer side of the installation plate (101) of the base (1) where the moving iron core of the electromagnetic valve (12) protrudes is provided with a fixed plate (5) as an outer cover. The slider (2) which is curved and formed inside the fixed plate corresponds to the edge part (501) which is curved and formed at one end of the fixed plate. The fixed plate is fixed to the base through the edge part and the downwardly curved edges on both sides.

7. The screened door electronic lock of claim 6, wherein The hook (7) at one end of the slider (2) inside the fixed plate (5) is provided with a positioning pin. The two ends of the positioning pin are respectively inserted into the upper sliding hole (502) of the fixed plate and the lower sliding hole (103) of the base (1).

8. The screened door electronic lock of claim 7, wherein The positioning pin or the convex column (702) which is integrally formed on the end of the hook (7) is up and down.

9. The screened door electronic lock of claim 1, wherein The curved part in the middle of the hook (7) on both sides of the base (1) is respectively provided with a shaft sleeve (8). The shaft sleeve is respectively fixed to the base through the pin shaft (9).

10. The screened door electronic lock of claim 1, wherein The hook part (701) of the hook (7) on both sides of the base (1) and / or at least one side below the hook and / or the side below the slider (2) is respectively provided with a micro switch. The corresponding micro switch is triggered when the hook swings into place or the slider moves into place.

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