A special lock for the protective cover behind the secondary screen cabinet

Abstract

The present invention relates to a secondary screen cabinet, and specifically, to a special lock for a protective cover of a secondary screen cabinet with an open space behind the screen. The lock comprises a lock base, a mounting plate, a latch and a control rod. A through hole and a limit hole are provided on the lock base. The control rod is inserted into the through hole. A baffle is provided at one end of the control rod, and the other end is connected to the latch. The control rod can move back and forth in the through hole. A paddle is provided on the latch to limit the movement of the control rod. The paddle is located in the limit hole. A locking mechanism is also provided on the lock base. When the locking mechanism is in a locked state, the paddle is stuck by the locking mechanism to limit the movement of the paddle. When the locking mechanism is in an open state, the paddle can move in the limit hole. The lock base is provided on a mounting plate, and the mounting plate is installed on the secondary screen cabinet. A card slot matching the latch is provided on the protective cover of the secondary screen cabinet. The lock of the present invention has a simple structure, reduces the required space, and meets the space design and installation requirements of the protective cover of the secondary screen cabinet.

Description

Technical Field

[0001] The invention relates to a secondary screen cabinet, in particular to a special lock for a protective cover of a rear air switch of a secondary screen cabinet. Background Art

[0002] The prior art does not have a special lock for the air switch protective cover behind the secondary screen cabinet, and this aspect is still blank at present. The space required by similar household high-voltage distribution box locks and drawer cabinet locks is too large, which greatly affects the overall structural design of the air switch protective cover behind the secondary screen cabinet. At present, there is an urgent need for a special lock to provide a locking function for the protective cover. First, the lock body of the currently commonly used cabinet door lock is a square that is more than 3CM in diameter. It is too large and cannot meet the space design and installation requirements of the secondary screen cabinet protective cover. Second, the lock body of the existing rotary cabinet lock is round and is clamped by nuts alone, which is easy to slip. Third, the lock body of the existing lock is complex and is tightened and sealed at the factory. When one of the components is worn, it must be replaced as a whole, resulting in waste. Fourth, the existing lock is an integrated lock core and locking part. When the lock core is stuck or the key is lost, the entire lock and even the entire protective cover must be destroyed to open the protective cover, which increases the risk of power equipment. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a special lock for the air switch protective cover behind the secondary screen cabinet. The lock has a simple structure, reduces the required space, and meets the space design and installation requirements of the secondary screen cabinet protective cover.

[0004] To solve the above problems, the technical solution provided by the present invention is: a special lock for a protective cover of an empty door behind a secondary screen cabinet, which includes a lock base, a mounting plate, a latch and a control rod. A through hole and a limit hole are provided on the lock base, and the control rod is inserted into the through hole. A baffle is provided at one end of the control rod, and the other end is connected to the latch. The control rod can move back and forth in the through hole; a paddle is provided on the latch for limiting the movement of the control rod, and the paddle is located in the limit hole. A locking mechanism is also provided on the lock base. When the locking mechanism is in a locked state, the paddle is stuck by the locking mechanism and the movement of the paddle is restricted. When the locking mechanism is in an open state, the paddle can move in the limit hole; the lock base is provided on the mounting plate, and the mounting plate is installed on the secondary screen cabinet. A slot matching the latch is provided on the protective cover of the secondary screen cabinet.

[0005] In the present invention, when in use, the lock base is connected to the mounting plate, and the lock base is fixed to the secondary screen cabinet through the mounting plate, and is arranged on the outside of the screen cabinet, and a slot matching the latch tongue is provided on the protective cover behind the secondary screen cabinet; when it is necessary to lock the protective cover, the latch tongue is inserted into the slot, and then the locking mechanism is put into a locked state, the locking mechanism latches the paddle, thereby limiting the movement of the latch tongue, so that the latch tongue is firmly stuck in the slot, and the protective cover is closed and locked; when it is necessary to open the protective cover, the locking mechanism is opened, and then the paddle is paddled, the paddle drives the latch tongue to move, so that the latch tongue is moved out of the slot, the latch tongue is connected to the control rod, and the control rod can move back and forth in the through hole, one end of the control rod is provided with a baffle, and the other end is connected with the latch tongue, and the movement stroke of the control rod is limited by the setting of the baffle and the paddle of the latch tongue, the control rod will not move, and the control rod can only move back and forth in the through hole.

[0006] Furthermore, the locking mechanism includes a locking disc and a padlock column, one end of the locking disc is hinged to the lock base, and the other end is provided with a first slot, and the padlock column is fixed on the lock base. When the first slot on the locking disc is sleeved on the padlock column, the locking disc clamps the paddle.

[0007] Furthermore, the padlock column is provided with a second slot for a padlock. When locking the protective cover, a lock is hung outside the second slot, so that the locking disc is stuck on the padlock column and cannot be opened, thereby ensuring that the latch is firmly stuck in the slot.

[0008] Furthermore, the control rod is sleeved with a spring, and an annular plate is provided at one end of the through hole near the baffle, one end of the spring is connected to the annular plate, and the other end is fixed to the control rod. The spring is sleeved on the control rod, and when the paddle is moved, the spring is compressed, and when the paddle is released, the latch is automatically reset by the elastic force of the spring.

[0009] Compared with the prior art, the beneficial effects are: the present invention provides a special lock for the air-opening protective cover behind the secondary screen cabinet. The lock adopts a combination of disc limiting and tongue locking to achieve multi-dimensional design, reduce the required space, and have a simple lock structure, which meets the space design and installation requirements of the secondary screen cabinet protective cover. The lock adopts multi-layer locking to achieve external hanging of the lock. When the key is lost or in an emergency, the lock can be unlocked by simply destroying the external padlock without affecting the lock itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the lock of the present invention.

[0011] Figure 2 It is a structural schematic diagram of the lock of the present invention in the locked state.

[0012] Figure 3It is a structural schematic diagram of the lock base and the mounting plate of the present invention.

[0013] Figure 4 This is a schematic structural diagram of the first state of the connection between the latch and the control rod of the present invention.

[0014] Figure 5 This is a schematic diagram of the structure of the second state in which the latch tongue and the control rod are connected according to the present invention.

[0015] Figure 6 It is a schematic diagram of the lock base structure of the present invention. DETAILED DESCRIPTION

[0016] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0017] like Figures 1 to 6 As shown, a special lock for a protective cover of an air switch behind a secondary screen cabinet, which includes a lock base 1, a mounting plate 2, a latch 3 and a control rod 4. A through hole 5 and a limit hole 6 are provided on the lock base 1. The control rod 4 is inserted into the through hole 5. A baffle 7 is provided at one end of the control rod 4, and the other end is connected to the latch 3. The control rod 4 can move back and forth in the through hole 5; a paddle 8 for limiting the movement of the control rod 4 is provided on the latch 3, and the paddle 8 is located in the limit hole 6. A locking mechanism is also provided on the lock base 1. When the locking mechanism is in a locked state, the paddle 8 is stuck by the locking mechanism and the movement of the paddle 8 is restricted. When the locking mechanism is in an open state, the paddle 8 can move in the limit hole 6; the lock base 1 is provided on the mounting plate 2, and the mounting plate 2 is installed on the secondary screen cabinet. A card slot matching the latch 3 is provided on the protective cover of the secondary screen cabinet.

[0018] like Figure 1 , Figure 2As shown, in the present invention, when in use, the lock base 1 is connected to the mounting plate 2, and the lock base 1 is fixed to the secondary screen cabinet through the mounting plate 2, and is arranged on the outside of the screen cabinet, and a card slot matching with the card tongue 3 is provided on the protective cover of the secondary screen cabinet; when the protective cover needs to be locked, the card tongue 3 is inserted into the card slot, and then the locking mechanism is in a locked state, and the locking mechanism clamps the paddle 8, thereby limiting the movement of the card tongue 3, so that the card tongue 3 is firmly stuck in the card slot, and the closing of the protective cover is realized. When the protective cover needs to be opened, the locking mechanism is opened, and then the paddle 8 is toggled, and the paddle 8 drives the tongue 3 to move, so that the tongue 3 is removed from the slot, and the tongue 3 is connected to the control rod 4, and the control rod 4 can move back and forth in the through hole 5. A baffle 7 is provided at one end of the control rod 4, and the other end is connected to the tongue 3. The setting of the baffle 7 and the paddle 8 of the tongue 3 limits the movement stroke of the control rod 4, and the control rod 4 will not move, so that the control rod 4 can only move back and forth in the through hole 5.

[0019] In the present invention, the control rod 4 adopts an I-shaped design, one end of which is used to fit into the groove in the tongue 3 to realize the transmission of the control rod 4 to the tongue 3, and the other end cooperates with the limiting hole 6 of the base control rod 4 and is automatically reset by a spring. The tongue 3 and the control rod 4 are tightly connected by the cooperation of the I-shaped rod and the groove. The tongue 3 remains locked under the action of the spring, and the locking disc 9 clamps the paddle 8 to limit its inability to be shifted down, thereby realizing the limitation of the paddle 8. When the locking disc 9 is closed, the paddle 8 is restricted on the disc, and the tongue 3 cannot slide down, thereby realizing the locking function; when the disc is opened, the paddle 8 can be manually pressed down, the tongue 3 is opened, and the lock is opened.

[0020] Specifically, the locking mechanism includes a locking disc 9 and a padlock column 10. One end of the locking disc 9 is hinged to the lock base 1, and the other end is provided with a first slot 11. The padlock column 10 is fixed on the lock base 1. When the first slot 11 on the locking disc 9 is sleeved on the padlock column 10, the locking disc 9 clamps the paddle 8.

[0021] The padlock column 10 is also provided with a second slot 12 for padlocking. When locking the protective cover, a lock is hung outside the second slot 12, so that the locking disc 9 is stuck on the padlock column 10 and cannot be opened, thereby ensuring that the latch 3 is firmly stuck in the slot.

[0022] In addition, a spring is sleeved on the control rod 4, and an annular plate is provided at one end of the through hole 5 near the baffle 7. One end of the spring is connected to the annular plate, and the other end is fixed to the control rod 4. The spring is sleeved on the control rod 4. When the paddle 8 is moved, the spring is compressed. When the paddle 8 is released, the tongue 3 is automatically reset by the elastic force of the spring.

[0023] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A special lock for the protective cover of the air switch behind the secondary screen cabinet, characterized in that: The invention comprises a lock base (1), a mounting plate (2), a latch tongue (3) and a control rod (4); a through hole (5) and a limiting hole (6) are provided on the lock base (1); the control rod (4) is inserted into the through hole (5); a baffle (7) is provided at one end of the control rod (4); and the other end is connected to the latch tongue (3); the control rod (4) can move back and forth in the through hole (5); a paddle (8) for limiting the movement stroke of the control rod (4) is provided on the latch tongue (3); the paddle (8) is located in the limiting hole (6); a locking mechanism is also provided on the lock base (1); when the locking mechanism is in a locked state, the paddle (8) is stuck by the locking mechanism to limit the movement of the paddle (8); when the locking mechanism is in an open state, the paddle (8) can The lock base (1) is arranged on the mounting plate (2), the mounting plate (2) is installed on the secondary screen cabinet, and a slot matching the latch tongue (3) is provided on the secondary screen cabinet protection cover; the locking mechanism comprises a locking disc (9) and a padlock column (10), one end of the locking disc (9) is hinged to the lock base (1), and the other end is provided with a first slot hole (11), and the padlock column (10) is fixed to the lock base (1), when the first slot hole (11) on the locking disc (9) is sleeved on the padlock column (10), the locking disc (9) clamps the paddle (8); the control rod (4) is I-shaped, one end of which is matched with the slot in the latch tongue (3) to realize the transmission of the control rod (4) to the latch tongue (3), and the other end is matched with the limiting hole (6).

2. A special lock for a secondary screen cabinet rear panel opening protection cover according to claim 1, characterized in that: The padlock column (10) is also provided with a second slot hole (12) for padlocking.

3. A special lock for a secondary screen cabinet rear open protection cover according to claim 1 or 2, characterized in that: The control rod (4) is also sleeved with a spring, and an annular plate is provided at one end of the through hole (5) close to the baffle (7), one end of the spring is connected to the annular plate, and the other end is fixed to the control rod (4).

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