Sliding door unlocking device for shielding door

Abstract

The utility model discloses a sliding door unlocking device for a shielding door, which belongs to the field of shielding door systems and comprises a shell, and a sliding frame is arranged on the shell. The lock cylinder rotates to drive the lock rod to ascend, the sliding frame drives the lock rod to ascend in a translation sliding mode and is used in cooperation with the inclined block and the follow-up plate at the lower end of the lock rod, a passenger operation part and a worker operation part are arranged in a separated mode, when one is damaged, normal use of the other one is not affected, and use safety is improved. A limiting strip is arranged on a jacking plate connected to a lock cylinder and used in cooperation with a protrusion on a follow-up plate, after the limiting strip rotates to a certain degree, limiting can be achieved, and the jacking plate is prevented from being separated from the follow-up plate, a fixing plate, a first spring and a tension reset assembly are arranged on a lock rod and a retainer, and the first spring is used for providing reset elastic force; the pulling force resetting assembly is used for providing resetting pulling force, rapid resetting of the locking rod can be guaranteed, and when one of the locking rods is damaged, the other locking rod can continue to play a resetting role.

Description

Technical Field

[0001] The utility model relates to the field of shielding door systems, in particular to a sliding door unlocking device for shielding doors. Background Art

[0002] In order to reduce the pressure of ground traffic and make it more convenient for people to travel, many cities are developing subway construction. However, in order to ensure the safety of passengers, a screen door system will be installed next to the platform close to the subway track. The sliding door in the screen door system is used to separate the platform from the track to prevent passengers on the platform from falling into the track due to carelessness or crowding, causing casualties and affecting the normal operation of the train. During the use of the screen door, the use of electromagnetic locks can ensure that the sliding door has a good locking effect. When encountering an emergency, a manual unlocking device is required to quickly unlock the sliding door to ensure that passengers can evacuate quickly.

[0003] The existing patent number is: CN213330483U discloses "A Subway Sliding Door Unlocking Device". In this patent, the door unlocking device includes a housing, a lock core, a handle, a lock rod, a trigger plate, a slider and other parts, with a simple structure and low production cost. However, in the above patent, the handle for passenger unlocking and the lock core for staff unlocking are installed together. When one of them is operated, the other will also move. When one of them fails, both need to be replaced at the same time. When one of them fails and cannot rotate, the other will also be unable to rotate, which will affect the rapid unlocking in an emergency. In addition, the handle and the lock core both use a rotating method to drive the lock rod to move. The operation method is single and is not conducive to rapid operation on the passenger side. At the same time, in the above patent, only one spring is used to reset the lock rod, and the reset effect is poor. If the spring is damaged, the rapid reset of the lock rod cannot be guaranteed, which will affect the normal use of the door lock device. Utility Model Content

[0004] The main purpose of the utility model is to provide a sliding door unlocking device for a shielding door, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A sliding door unlocking device for a shield door, comprising a housing, a sliding frame is arranged on the housing, a lock core is arranged on the housing, a partition is arranged inside the housing, and the partition separates the sliding frame from the lock core, a retaining frame is arranged at the upper end of the housing, and a lock rod penetrating the retaining frame is connected to the housing, a fixing plate is arranged on the lock rod, and a first spring is arranged on the fixing plate, a tension reset assembly is arranged on the upper end of the retaining frame, and the tension reset assembly is connected to the lock rod;

[0007] A guide rod is fixed inside the shell, and a return spring is sleeved on the guide rod. The sliding frame is arranged on the guide rod, and a driving block is installed on the sliding frame. A lifting plate is connected to the lock core, and a limit strip is provided at the end of the lifting plate. An inclined block and a follower plate are fixed to the lower end of the lock rod, and a protrusion is provided on the follower plate.

[0008] Preferably, one end of the reset spring abuts against the inner wall of the shell, and the other end abuts against the sliding frame, the shell is provided with a round hole, the lock core is installed in the round hole, and the upper end of the lock rod is provided with a trigger plate.

[0009] Preferably, a threaded joint is fixed to the upper end of the retaining frame, the first spring is sleeved on the locking rod, and the upper end of the first spring contacts the upper transverse plate of the retaining frame.

[0010] Preferably, the tension reset assembly includes a connecting seat, a threaded hole, a second spring, a connecting plate, a mounting sleeve, a screw hole and a fixing screw, the two ends of the second spring are respectively fixedly connected to the connecting seat and the connecting plate, the threaded hole is opened on the connecting seat, and the connecting seat is connected to the threaded joint through the threaded hole.

[0011] Preferably, the mounting sleeve is fixed on the connecting plate, and the connecting plate and the mounting sleeve are arranged on the locking rod, the screw hole is opened on the mounting sleeve, the fixing screw is threadedly connected in the screw hole, and the end of the fixing screw abuts against the locking rod.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the sliding door unlocking device for the shield door, the lock core rotates to lift the lock rod, the sliding frame lifts the lock rod by means of translational sliding, and is used in conjunction with the inclined block and the follower plate at the lower end of the lock rod to separate the passenger operating part and the staff operating part. When one of them is damaged, it will not affect the normal use of the other, thereby improving the safety of use. A limit strip is provided on the jacking plate connected to the lock core, which is used in conjunction with the protrusion on the follower plate. After rotating to a certain extent, it can be limited to prevent the jacking plate from being separated from the follower plate. A fixed plate, a first spring and a tension reset assembly are arranged on the lock rod and the retaining frame. The first spring is used to provide a reset elastic force, and the tension reset assembly is used to provide a reset tension, which can ensure the rapid reset of the lock rod. When one of them is damaged, the other can continue to play a reset role, which will not affect the reset process of the lock rod. The tension reset assembly is fixed on the threaded joint and the lock rod for easy disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a structural schematic diagram of the lock core of the utility model;

[0015] Figure 3 This is a schematic diagram of the split structure of the utility model;

[0016] Figure 4 For this utility model Figure 4 The enlarged view of point A in the middle;

[0017] Figure 5 This is a schematic diagram of the structure of the lock rod of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the tension reset component of the utility model.

[0019] In the figure: 1. shell; 2. sliding frame; 3. lock core; 4. partition; 5. retaining frame; 6. lock rod; 7. fixing plate; 8. first spring; 9. tension reset assembly; 901. connecting seat; 902. threaded hole; 903. second spring; 904. connecting plate; 905. mounting sleeve; 906. screw hole; 907. fixing screw; 10. inclined block; 11. follower plate; 12. protrusion; 13. lifting plate; 14. limit strip; 15. round hole; 16. threaded joint; 17. guide rod; 18. reset spring; 19. drive block. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-Figure 6As shown, a sliding door unlocking device for a shielding door comprises a housing 1, a sliding frame 2 is arranged on the housing 1, a lock core 3 is arranged on the housing 1, a partition 4 is arranged inside the housing 1, and the partition 4 separates the sliding frame 2 from the lock core 3, a retaining frame 5 is arranged at the upper end of the housing 1, and a lock rod 6 penetrating the retaining frame 5 is connected to the housing 1, a fixing plate 7 is arranged on the lock rod 6, and a first spring 8 is arranged on the fixing plate 7, a tension reset component 9 is arranged at the upper end of the retaining frame 5, and the tension reset component 9 is connected to the lock rod 6, and the interior of the housing 1 is fixed. There is a guide rod 17, and a return spring 18 is sleeved on the guide rod 17, the sliding frame 2 is arranged on the guide rod 17, and a driving block 19 is installed on the sliding frame 2, a lifting plate 13 is connected to the lock core 3, and a limit strip 14 is provided at the end of the lifting plate 13, an inclined block 10 and a follower plate 11 are fixed to the lower end of the lock rod 6, and a protrusion 12 is provided on the follower plate 11, one end of the return spring 18 abuts against the inner wall of the housing 1, and the other end abuts against the sliding frame 2, a round hole 15 is provided on the housing 1, and the lock core 3 is installed in the round hole 15, and the lock rod The upper end of the lock rod 6 is provided with a trigger plate, the upper end of the retaining frame 5 is fixed with a threaded joint 16, the first spring 8 is sleeved on the lock rod 6, and the upper end of the first spring 8 contacts the upper horizontal plate of the retaining frame 5, the lock cylinder 3 rotates to bring the lock rod 6 up, and the sliding frame 2 uses a translational sliding method to bring the lock rod 6 up, and cooperates with the inclined block 10 and the follower plate 11 at the lower end of the lock rod 6 to separate the passenger operation part and the staff operation part. When one of them is damaged, it will not affect the normal use of the other, thereby improving the safety of use. A limit strip 14 is provided on the connected lifting plate 13, which is used in conjunction with the protrusion 12 on the follower plate 11. After rotating to a certain extent, it can be limited to prevent the lifting plate 13 from being separated from the follower plate 11. A fixed plate 7, a first spring 8 and a tension reset component 9 are arranged on the locking rod 6 and the retaining frame 5. The first spring 8 is used to provide a reset elastic force, and the tension reset component 9 is used to provide a reset tension. This can ensure the rapid reset of the locking rod 6. When one of them is damaged, the other can continue to play a reset role and will not affect the reset process of the locking rod 6.

[0022] When using the unlocking device, for the passenger side, the passenger holds the handle on the sliding frame 2, so that the sliding frame 2 moves along the guide rod 17 and compresses the reset spring 18, and the driving block 19 drives the inclined block 10. The inclined block 10 is forced to move the locking rod 6 up until the trigger plate contacts the switch to start the electromagnetic lock, and then the shielding door is opened. In this process, the locking rod 6 moves up with the fixing plate 7 to compress the first spring 8, and the tension reset component 9 is in a stretched state. When the sliding frame 2 is released, the sliding frame 2 is reset under the action of the reset spring 18, and the locking rod 6 is pressed against the first spring 8 on the retaining frame 5 and the tension reset component 9. To reset the lock cylinder 3, the staff uses the key to rotate the lock cylinder 3, and the lock cylinder 3 rotates with the lifting plate 13. The lifting plate 13 drives the follower plate 11 and the lock rod 6 to rise, and the trigger plate is used to trigger the switch. Similarly, the first spring 8 is compressed, and the tension reset component 9 is stretched. After the lock cylinder 3 is released, the lock rod 6 is reset under the positioning action of the first spring 8 and the tension reset component 9. In the process of unlocking the lock cylinder 3, when it is rotated to an appropriate angle, the limit strip 14 is in limit contact with the protrusion 12, which can play a limiting role to prevent the lifting plate 13 from rotating excessively. When the shielding door is unlocked, it can be opened for evacuation of personnel.

[0023] Through the above implementation scheme, the tension reset assembly 9 includes a connecting seat 901, a threaded hole 902, a second spring 903, a connecting plate 904, a mounting sleeve 905, a screw hole 906 and a fixing screw 907, the two ends of the second spring 903 are respectively fixedly connected to the connecting seat 901 and the connecting plate 904, the threaded hole 902 is opened on the connecting seat 901, and the connecting seat 901 is connected to the threaded joint 16 through the threaded hole 902, the mounting sleeve 905 is fixed on the connecting plate 904, and The connecting plate 904 and the mounting sleeve 905 are sleeved on the locking rod 6, the screw hole 906 is opened on the mounting sleeve 905, the fixing screw 907 is threadedly connected in the screw hole 906, and the end of the fixing screw 907 abuts against the locking rod 6, the connecting seat 901 in the tension reset assembly 9 is threadedly connected to the threaded joint 16, and the mounting sleeve 905 is fixed to the locking rod 6 by the fixing screw 907, which is convenient for disassembly and can also adjust the initial length of the second spring 903, and has high flexibility and adaptability.

[0024] During the installation of the tension reset component 9, the entire tension reset component 9 is sleeved on the locking rod 6, the connecting seat 901 is installed on the threaded joint 16 through the threaded hole 902, the connecting plate 904 and the mounting sleeve 905 are moved to the corresponding positions, the fixing screw 907 is screwed into the screw hole 906, and the mounting sleeve 905 is fixed by the fixing screw 907. After the tension reset component 9 is installed, it can be used. As the locking rod 6 rises, the mounting sleeve 905 and the connecting plate 904 rise together, and the connecting seat 901 is fixed on the retaining frame 5, so the second spring 903 is stretched. When the trigger plate at the upper end of the locking rod 6 contacts the switch and the corresponding structure is released, under the joint action of the first spring 8 and the second spring 903, the locking rod 6 can be quickly lowered and reset, which will not affect the normal closing of the shielding door. The structure is simple and the use effect is excellent.

[0025] The above content describes the use principle, features and beneficial effects of the utility model. Relevant personnel in the field can understand from the above content that the above content does not limit the utility model. The above embodiments and instructions describe the basic principles and features of the utility model. Under the premise of conforming to the concept of the utility model, the utility model can also be modified in various ways, and these modifications should fall within the scope of protection required by the utility model.

Claims

1. A sliding door unlocking device for a shielding door, comprising a housing (1), a sliding frame (2) being provided on the housing (1), and a lock core (3) being provided on the housing (1), characterized in that: A partition (4) is provided inside the housing (1), and the partition (4) separates the sliding frame (2) from the lock core (3); a retaining frame (5) is provided at the upper end of the housing (1), and a locking rod (6) penetrating the retaining frame (5) is connected to the housing (1); a fixing plate (7) is provided on the locking rod (6), and a first spring (8) is provided on the fixing plate (7); a tension reset assembly (9) is provided at the upper end of the retaining frame (5), and the tension reset assembly (9) is connected to the locking rod (6); A guide rod (17) is fixed inside the housing (1), and a return spring (18) is sleeved on the guide rod (17); the sliding frame (2) is arranged on the guide rod (17), and a driving block (19) is installed on the sliding frame (2); a lifting plate (13) is connected to the lock cylinder (3), and a limit strip (14) is provided at the end of the lifting plate (13); an inclined block (10) and a follower plate (11) are fixed at the lower end of the lock rod (6), and a protrusion (12) is provided on the follower plate (11).

2. The sliding door unlocking device for a shielding door according to claim 1, characterized in that: One end of the return spring (18) abuts against the inner wall of the housing (1), and the other end abuts against the sliding frame (2); a circular hole (15) is provided on the housing (1), the lock core (3) is installed in the circular hole (15), and a trigger plate is provided at the upper end of the lock rod (6).

3. The sliding door unlocking device for a shielding door according to claim 2, characterized in that: A threaded joint (16) is fixed to the upper end of the retaining frame (5); the first spring (8) is sleeved on the locking rod (6), and the upper end of the first spring (8) contacts the upper transverse plate of the retaining frame (5).

4. The sliding door unlocking device for a shielding door according to claim 3, characterized in that: The tension reset assembly (9) comprises a connecting seat (901), a threaded hole (902), a second spring (903), a connecting plate (904), a mounting sleeve (905), a screw hole (906) and a fixing screw (907); the two ends of the second spring (903) are respectively fixedly connected to the connecting seat (901) and the connecting plate (904); the threaded hole (902) is provided on the connecting seat (901), and the connecting seat (901) is connected to the threaded joint (16) via the threaded hole (902).

5. The sliding door unlocking device for a shielding door according to claim 4, characterized in that: The mounting sleeve (905) is fixed on the connecting plate (904), and the connecting plate (904) and the mounting sleeve (905) are sleeved on the locking rod (6). The screw hole (906) is opened on the mounting sleeve (905), and the fixing screw (907) is threadedly connected in the screw hole (906), and the end of the fixing screw (907) abuts against the locking rod (6).

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