An interlocking door structure

Abstract

The present invention discloses an interlocking door structure, which includes a main door assembly and a sub-door assembly. A main door locking mechanism is provided on the main door assembly, and a sub-door locking mechanism is provided on the sub-door assembly. A linkage mechanism is provided between the main door locking mechanism and the sub-door locking mechanism to enable the sub-door locking mechanism to unlock and lock synchronously with the main door locking mechanism. This interlocking door structure has the advantages of simple structure, convenient operation, having an interlocking function, being able to prevent accidental door opening, and being able to improve safety, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical box equipment, and particularly to an interlocking door structure. Background Art

[0002] Boxes such as high-voltage electrical boxes and auxiliary high-voltage boxes (or some systems call them auxiliary disconnector boxes) are core components of the electric traction system in urban rail transit, and are used to supply power for the whole vehicle traction and auxiliary equipment. Such boxes often have multiple opening doors, and usually there is a chamber where a disconnector is installed. During daily operation and maintenance, it is often necessary to first open the chamber with the disconnector (inside the main door) to cut off the power supply of the disconnector from the pantograph before subsequent maintenance work on the box or the whole vehicle can be carried out. In the past, there was no connection such as switch locking between the doors of high-voltage boxes, and each door could be opened independently without being affected by other doors. For such boxes in the past, only a sign saying "Open the door only after confirming the cut-off of high voltage" was riveted on the door of the depot socket. However, if the operator makes a wrong operation, opens the secondary door for maintenance and other related operations without opening the main door to switch the disconnector, it will pose a safety risk to the operator. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide an interlocking door structure with a simple structure, convenient operation, an interlocking function, capable of preventing wrong door opening and improving safety.

[0004] To solve the above technical problem, the present invention adopts the following technical solutions:

[0005] An interlocking door structure includes a main door assembly and a secondary door assembly. A main door locking mechanism is provided on the main door assembly, a secondary door locking mechanism is provided on the secondary door assembly, and a linkage mechanism for synchronously unlocking and locking the secondary door locking mechanism with the main door locking mechanism is provided between the main door locking mechanism and the secondary door locking mechanism.

[0006] As a further improvement of the above technical solution:

[0007] The main door assembly includes a main door panel and a main door frame that match each other, and the main door panel is arranged on the main door frame through the main door locking mechanism.

[0008] The main door locking mechanism includes a rotating member and a locking tongue. The rotating member is arranged on the side of the main door panel, one end of the locking tongue is arranged on the rotating member, and the other end is set as a buckling end for buckling with the main door frame. The linkage mechanism is arranged between the locking tongue and the secondary door locking mechanism.

[0009] The secondary door assembly includes a secondary door panel and a secondary door frame, and the secondary door locking mechanism is arranged between the secondary door panel and the secondary door frame.

[0010] The secondary door locking mechanism includes a latch, a lock base, a lock pin and an elastic reset member. The latch and the lock base are respectively arranged on the secondary door panel and the secondary door frame. The lock pin is slidably arranged on the lock base and is correspondingly arranged with the latch. The elastic reset member is arranged between the lock pin and the lock base. The linkage mechanism is arranged between the lock pin and the lock tongue.

[0011] The linkage mechanism includes a transmission member and a pull rope. The transmission member is arranged on the main door frame and is in transmission cooperation with the lock tongue. The pull rope is arranged between the transmission member and the lock pin.

[0012] The transmission member is V-shaped. The pointed angle part of the transmission member is rotatably arranged on the main door frame. The latching end of the lock tongue is in transmission cooperation with the inner side surface of the transmission member. The outer side surface of the transmission member is magnetically attracted and cooperated with the main door frame.

[0013] The V-shaped angle β of the transmission member is an obtuse angle.

[0014] Pulleys are arranged on both the main door frame and the secondary door frame. The pull rope is wound around the pulleys.

[0015] A magnetic seat is arranged on the main door frame. The transmission member is arranged on the magnetic seat.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] In the interlocking door structure of the present invention, when the main door locking mechanism is not unlocked, the secondary door locking mechanism is also in an unlocked state. That is, when the main door locking mechanism cannot be opened, the secondary door locking mechanism cannot be opened either, avoiding safety accidents caused by opening the secondary door locking mechanism first. This interlocking door structure is applied to electrical box equipment. The disconnecting switch is placed in the main door assembly. In the normal use state, both the main door assembly and the secondary door assembly are in a closed state (as Figure 2 shown), and both the main door locking mechanism and the secondary door locking mechanism are in a locked state to prevent the main door assembly and the secondary door assembly from being opened. When it is necessary to enter the secondary door assembly for maintenance work, the secondary door locking mechanism must be unlocked through the main door locking mechanism. The secondary door locking mechanism is unlocked synchronously with the main door locking mechanism. Therefore, the operator must first unlock through the main door locking mechanism, which prompts the operator to first think of opening the main door assembly, cut off the operating position of the disconnecting switch (ensuring the power supply of the pantograph is cut off), and then open the secondary door assembly to perform maintenance work inside the secondary door assembly, preventing the operator from entering the secondary door assembly when the disconnecting switch is operating, improving safety. Moreover, when the main door locking mechanism is locked, the secondary door locking mechanism is locked synchronously, which is convenient for operation. This interlocking door structure is simple in structure, convenient for operation, has an interlocking function, can prevent accidental door opening and can improve safety.

[0018] The interlocking door structure of the present invention drives the locking tongue to rotate through a rotating member, so as to realize the buckling or unbuckling of the buckling end of the locking tongue with the main doorframe. When the buckling end of the locking tongue is buckled with the main doorframe, the main door locking mechanism is in the locked state, and the secondary door locking mechanism is also in the locked state. When the buckling end of the locking tongue is unbuckled from the main doorframe, the main door locking mechanism is in the unlocked state, and the secondary door locking mechanism is also in the unlocked state. The rotational movement of the locking tongue drives the unlocking or locking movement of the secondary door locking mechanism through the transmission of the linkage mechanism.

[0019] The interlocking door structure of the present invention drives the locking tongue to rotate through a rotating member, so as to realize the buckling or unbuckling of the buckling end of the locking tongue with the main doorframe. When the buckling end of the locking tongue is buckled with the main doorframe, the main door locking mechanism is in the locked state, and the secondary door locking mechanism is also in the locked state. When the buckling end of the locking tongue is unbuckled from the main doorframe, the main door locking mechanism is in the unlocked state, and the secondary door locking mechanism is also in the unlocked state. The rotational movement of the locking tongue drives the unlocking or locking movement of the secondary door locking mechanism through the transmission of the linkage mechanism.

[0020] In the unlocking process of the interlocking door structure of the present invention, the locking tongue rotates forward under the driving action of the rotating member. The locking tongue presses against one side of the transmission member that is inclined towards the locking tongue, causing the transmission member to rotate forward. The pull rope is pulled by the rotation of the transmission member, driving the locking pin to move. When the locking tongue separates from the transmission member, the original side of the transmission member that is inclined towards the locking tongue is attracted by the magnetic force and adheres tightly to the main doorframe, preventing the locking pin from engaging with the lock buckle under the elastic restoring force of the elastic resetting member, so that when the main door locking mechanism is unlocked, the secondary door locking mechanism is also unlocked. Conversely, in the locking process, the locking tongue rotates backward under the driving action of the rotating member. The locking tongue presses against the other side of the transmission member that is inclined towards the locking tongue, causing the transmission member to rotate backward. The pull rope releases the traction force on the locking pin under the rotation of the transmission member. The locking pin moves under the elastic restoring force of the elastic resetting member until it engages with the lock buckle, so that when the main door locking mechanism is locked, the secondary door locking mechanism is also locked. Description of the Drawings

[0021] Figure 1 is a three-dimensional structural schematic diagram of the interlocking door structure of the present invention.

[0022] Figure 2 is this Figure 1 enlarged structural schematic diagram of part A in it.

[0023] Figure 3 is a linkage state diagram of the main door locking mechanism and the secondary door locking mechanism of the interlocking door structure of the present invention.

[0024] Each label in the figure represents:

[0025] 1. Main door assembly; 11. Main door panel; 12. Main door frame; 121. Magnetic seat; 2. Sub-door assembly; 21. Sub-door panel; 22. Sub-door frame; 3. Main door locking mechanism; 31. Rotating part; 32. Lock tongue; 321. Latching end; 4. Sub-door locking mechanism; 41. Lock catch; 42. Lock seat; 43. Lock pin; 44. Elastic resetting part; 5. Linkage mechanism; 51. Transmission part; 511. Inner side; 52. Pull rope; 6. Pulley. Detailed implementation mode

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0027] Figures 1 to 3 An embodiment of the interlocking door structure of the present invention is shown. The interlocking door structure includes a main door assembly 1 and a sub-door assembly 2. A main door locking mechanism 3 is provided on the main door assembly 1, and a sub-door locking mechanism 4 is provided on the sub-door assembly 2. A linkage mechanism 5 is provided between the main door locking mechanism 3 and the sub-door locking mechanism 4 to enable the sub-door locking mechanism 4 to unlock and lock synchronously with the main door locking mechanism 3.

[0028] In the interlocking door structure of the present invention, when the main door locking mechanism 3 is not unlocked, the sub-door locking mechanism 4 is also in the unlocked state, that is, when the main door locking mechanism 3 cannot be opened, the sub-door locking mechanism 4 cannot be opened either, avoiding safety accidents caused by opening the sub-door locking mechanism 4 first. The interlocking door structure of the present invention is applied to electrical box equipment. The disconnector is placed in the main door assembly 1. In the normal use state, both the main door assembly 1 and the sub-door assembly 2 are in the closed state (as Figure 2 shown), and both the main door locking mechanism 3 and the sub-door locking mechanism 4 are in the locked state to prevent the main door assembly 1 and the sub-door assembly 2 from being opened. When it is necessary to enter the sub-door assembly 2 for maintenance work, the sub-door locking mechanism 4 must be unlocked through the main door locking mechanism 3, and the sub-door locking mechanism 4 unlocks synchronously with the main door locking mechanism 3. Therefore, the operator must first unlock through the main door locking mechanism 3, which prompts the operator to first think of opening the main door assembly 1, cut off the operating position of the disconnector (ensure that the pantograph power supply is cut off), and then open the sub-door assembly 2 to perform maintenance work inside the sub-door assembly 2, preventing the operator from entering the sub-door assembly 2 when the disconnector is operating, improving safety. And when the main door locking mechanism 3 locks, the sub-door locking mechanism 4 locks synchronously, which is convenient for operation. The interlocking door structure of the present invention has a simple structure, convenient operation, an interlocking function, can prevent accidental door opening, and can improve safety.

[0029] In this embodiment, the main door assembly 1 includes a matching main door panel 11 and a main door frame 12, and the main door panel 11 is arranged on the main door frame 12 through the main door locking mechanism 3. When the main door locking mechanism 3 is in the locked state, the main door panel 11 cannot be opened, and when the main door locking mechanism 3 is in the unlocked state, the main door panel 11 can be opened.

[0030] In this embodiment, asFigure 2 and Figure 3 As shown in Figure 3 , the main door locking mechanism 3 includes a rotating member 31 and a locking tongue 32. The rotating member 31 is arranged on the side of the main door panel 11. One end of the locking tongue 32 is arranged on the rotating member 31, and the other end is set as a latching end 321 for latching with the main door frame 12. The linkage mechanism 5 is arranged between the locking tongue 32 and the secondary door locking mechanism 4. By driving the locking tongue 32 to rotate through the rotating member 31, the latching end 321 of the locking tongue 32 is latched with or unlatched from the main door frame 12. When the latching end 321 of the locking tongue 32 is latched with the main door frame 12, the main door locking mechanism 3 is in the locked state, and the secondary door locking mechanism 4 is also in the locked state. When the latching end 321 of the locking tongue 32 is unlatched from the main door frame 12, the main door locking mechanism 3 is in the unlocked state, and the secondary door locking mechanism 4 is also in the unlocked state. The locking tongue 32 rotates, and through the transmission of the linkage mechanism 5, it drives the secondary door locking mechanism 4 to unlock or lock.

[0031] In this embodiment, the secondary door assembly 2 includes a secondary door panel 21 and a secondary door frame 22. The secondary door locking mechanism 4 is arranged between the secondary door panel 21 and the secondary door frame 22. When the secondary door locking mechanism 4 is in the locked state, the secondary door panel 21 cannot be opened. When the secondary door locking mechanism 4 is in the unlocked state, the secondary door panel 21 can be opened.

[0032] In this embodiment, as Figure 2 and Figure 3 shown in Figure 3 , the secondary door locking mechanism 4 includes a lock catch 41, a lock seat 42, a lock pin 43, and an elastic reset member 44. The lock catch 41 and the lock seat 42 are respectively arranged on the secondary door panel 21 and the secondary door frame 22. The lock pin 43 is slidably arranged on the lock seat 42 and is correspondingly arranged with the lock catch 41. The elastic reset member 44 is arranged between the lock pin 43 and the lock seat 42. The linkage mechanism 5 is arranged between the lock pin 43 and the locking tongue 32. During the process of the rotating member 31 driving the locking tongue 32 to rotate and unlock, the locking tongue 32 drives the lock pin 43 to move away from the lock catch 41 through the linkage mechanism 5. When the latching end 321 of the locking tongue 32 is unlatched from the main door frame 12, the lock pin 43 is separated from the lock catch 41, realizing synchronous unlocking. The structure is simple and the operation is convenient.

[0033] In this embodiment, the linkage mechanism 5 includes a transmission member 51 and a pull rope 52. The transmission member 51 is arranged on the main door frame 12 and is in transmission cooperation with the locking tongue 32. The pull rope 52 is arranged between the transmission member 51 and the lock pin 43. When the locking tongue 32 rotates, it drives the transmission member 51 to rotate. The transmission member 51 then drives the lock pin 43 to move through the pull rope 52. Through the pull rope 52, remote transmission can be realized, which is convenient for overall layout.

[0034] In this embodiment, the transmission member 51 is V-shaped. The pointed corner portion of the transmission member 51 is rotatably arranged on the main doorframe 12. The fastening end 321 of the lock tongue 32 is in transmission cooperation with the inner side surface 511 of the transmission member 51, and the outer side surface of the transmission member 51 is in magnetic attraction cooperation with the main doorframe 12. Specifically, the rotation plane of the lock tongue 32 is parallel to the rotation axis of the transmission member 51. During the unlocking process, the lock tongue 32 rotates forward under the driving action of the rotating member 31. The lock tongue 32 presses against one side of the transmission member 51 that is inclined towards the lock tongue 32, causing the transmission member 51 to rotate forward. Under the pulling action of the rotation of the transmission member 51, the pull rope 52 pulls the lock pin 43 to move. When the lock tongue 32 is separated from the transmission member 51, the side of the transmission member 51 that was originally inclined towards the lock tongue 32 is attracted magnetically and adheres tightly to the main doorframe 12, preventing the lock pin 43 from engaging with the lock catch 41 under the elastic restoring force of the elastic resetting member 44. When the main door locking mechanism 3 is unlocked, the secondary door locking mechanism 4 is also unlocked. Conversely, during the door locking process, the lock tongue 32 rotates reversely under the driving action of the rotating member 31. The lock tongue 32 presses against the other side of the transmission member 51 that is inclined towards the lock tongue 32, causing the transmission member 51 to rotate reversely. Under the releasing action of the rotation of the transmission member 51, the pull rope 52 releases the traction force on the lock pin 43. The lock pin 43 moves under the elastic restoring force of the elastic resetting member 44 until it engages with the lock catch 41, so that when the main door locking mechanism 3 locks the door, the secondary door locking mechanism 4 also locks the door.

[0035] In this embodiment, as Figure 2 shown, the V-shaped angle β of the transmission member 51 is an obtuse angle. Specifically, the V-shaped angle β is 115° to 165°

[0036] In this embodiment, pulleys 6 are provided on both the main doorframe 12 and the secondary doorframe 22. The pull rope 52 is wound around the pulleys 6.

[0037] In this embodiment, a magnetic seat 121 is provided on the main doorframe 12, and the transmission member 51 is arranged on the magnetic seat 121. Specifically, both the transmission member 51 and the magnetic seat 121 are made of permanent magnet materials.

[0038] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. An interlocking door structure, characterized in that: It includes a main door assembly (1) and a sub-door assembly (2). A main door locking mechanism (3) is provided on the main door assembly (1), and a sub-door locking mechanism (4) is provided on the sub-door assembly (2). A linkage mechanism (5) for synchronously unlocking and locking the sub-door locking mechanism (4) with the main door locking mechanism (3) is provided between the main door locking mechanism (3) and the sub-door locking mechanism (4). The main door assembly (1) includes a matching main door panel (11) and a main door frame (12). The main door panel (11) is arranged on the main door frame (12) through the main door locking mechanism (3). The main door locking mechanism (3) includes a rotating member (31) and a locking tongue (32). The rotating member (31) is arranged on the side of the main door panel (11). One end of the locking tongue (32) is arranged on the rotating member (31), and the other end is set as a fastening end (321) for fastening with the main door frame (12). The sub-door assembly (2) includes a sub-door panel (21) and a sub-door frame (22). The sub-door locking mechanism (4) is arranged between the sub-door panel (21) and the sub-door frame (22). The sub-door locking mechanism (4) includes a lock catch (41), a lock seat (42), a lock pin (43), and an elastic reset member (44). The lock catch (41) and the lock seat (42) are respectively arranged on the sub-door panel (21) and the sub-door frame (22). The lock pin (43) is slidably arranged on the lock seat (42) and is correspondingly arranged with the lock catch (41). The elastic reset member (44) is arranged between the lock pin (43) and the lock seat (42). The linkage mechanism (5) includes a transmission member (51) and a pulling rope (52). The transmission member (51) is arranged on the main door frame (12) and is in transmission cooperation with the locking tongue (32). The pulling rope (52) is arranged between the transmission member (51) and the lock pin (43). The transmission member (51) is V-shaped. The pointed angle part of the transmission member (51) is rotatably arranged on the main door frame (12). The fastening end (321) of the locking tongue (32) is in transmission cooperation with the inner side surface (511) of the transmission member (51). The outer side surface of the transmission member (51) is in magnetic attraction cooperation with the main door frame (12).

2. The interlocking door structure according to claim 1, characterized in that: The V-shaped angle β of the transmission member (51) is an obtuse angle.

3. The interlocking door structure according to claim 2, characterized in that: Pulleys (6) are provided on both the main door frame (12) and the sub-door frame (22). The pulling rope (52) is wound around the pulleys (6).

4. The interlocking door structure according to any one of claims 1 to 3, characterized in that: A magnetic seat (121) is provided on the main door frame (12). The transmission member (51) is arranged on the magnetic seat (121).

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