A mechanical unlocking device for electromagnetic lock

Abstract

The embodiment of the present invention discloses a mechanical unlocking device of an electromagnetic lock, comprising a mechanical lock core and an active unlocking component arranged on a cabinet door, and a passive paddle component arranged in a cabinet body, wherein a paddle 1 is arranged on the rotating shaft of the mechanical lock core, and a pushing wedge is installed on the paddle 1, and the active unlocking component comprises a movable sleeve fixedly arranged on the cabinet door, and a push rod which is telescopic along a horizontal direction is arranged at the center of the movable sleeve; the passive paddle component comprises a mounting base fixed above the electromagnetic lock, and a paddle 2 movably arranged on the mounting base, a front stop of the paddle 2 faces the push rod, and a rear stop of the paddle 2 faces the mechanical switch of the electromagnetic lock, and the push rod pushes the paddle 2 to rotate around the mounting base until the rear stop of the paddle 2 presses the mechanical switch of the electromagnetic lock; this scheme adopts a front-mounted mechanical unlocking component to solve the problem in the prior art that the mechanical unlocking device cannot be used when multiple cabinets are arranged side by side.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of electromagnetic locks, and in particular to a mechanical unlocking device for an electromagnetic lock. Background Art

[0002] The manual unlocking device of the cabinet is an indispensable part of the cabinet that uses electromagnetic locks. When the cabinet door is closed, the lock hook of the electromagnetic lock will hook the lock tongue. After the electromagnetic lock is powered on, the lock hook of the electromagnetic lock will pop open, canceling the lock on the lock tongue, and the cabinet door can be opened. However, when the cabinet is powered off, the cabinet door needs to be opened in an emergency, and a mechanical device is needed to manually unlock the electromagnetic lock.

[0003] Usually, the electromagnetic lock is installed on the cabinet body, and the lock tongue is installed on the cabinet door. When the cabinet door is closed, the lock tongue will hit the electromagnetic lock hook, thereby locking the cabinet door. The electromagnetic lock is equipped with a mechanical switch. Manually turning the switch can open the electromagnetic lock in the case of power failure. Therefore, the general manual mechanical unlocking device is installed on the side of the cabinet door close to the electromagnetic lock. The electromagnetic lock is opened by turning the mechanical switch on the electromagnetic lock through the rotating paddle of the mechanical lock. The current unlocking method must be installed on the side of the cabinet. When multiple cabinets are arranged side by side, manual unlocking in an emergency cannot be achieved. Summary of the invention

[0004] To this end, an embodiment of the present invention provides a mechanical unlocking device for an electromagnetic lock, which adopts a front-mounted mechanical unlocking component to solve the problem in the prior art that the mechanical unlocking device cannot be used when multiple cabinets are arranged side by side.

[0005] In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

[0006] A mechanical unlocking device for an electromagnetic lock, comprising a mechanical lock core and an active unlocking assembly arranged on a cabinet door, and a passive paddle assembly arranged in the cabinet and connected to a mechanical switch of the electromagnetic lock, wherein the mechanical lock core is connected to the active unlocking assembly;

[0007] When the mechanical lock core is rotated to unlock, the active unlocking assembly is driven to push the passive paddle assembly inward, so that the passive paddle assembly triggers the mechanical switch of the electromagnetic lock to realize manual opening of the electromagnetic lock.

[0008] As a preferred solution of the present invention, a paddle 1 is provided on the rotating shaft of the mechanical lock core, a pushing wedge is installed on the paddle 1, and the active unlocking component includes a movable sleeve fixed on the cabinet door, and a push rod which can be extended and retracted along the horizontal direction is provided at the center of the movable sleeve.

[0009] As a preferred solution of the present invention, the passive paddle assembly includes a mounting base fixed above the electromagnetic lock, and a paddle 2 movably arranged on the mounting base, the front stop of the paddle 2 faces the push rod, the rear stop of the paddle 2 faces the mechanical switch of the electromagnetic lock, and the push rod pushes the paddle 2 to rotate around the mounting base until the rear stop of the paddle 2 presses the mechanical switch of the electromagnetic lock.

[0010] As a preferred solution of the present invention, the outer movable sleeve of the push rod is provided with the compression spring, and the two ends of the compression spring are respectively installed on the end of the movable sleeve and the push rod.

[0011] As a preferred solution of the present invention, the cabinet body is provided with an inner hole at a position opposite to the push rod, the push rod passes through the cabinet door and is inserted into the inner hole, and the push rod slides left and right in the inner hole under the action of the pushing wedge block.

[0012] As a preferred solution of the present invention, a limiting arc groove is provided in the middle position of the paddle 2, a tension spring fixing rod inserted in the limiting arc groove is provided in the cabinet body, the paddle 2 rotates along the tension spring fixing rod through the limiting arc groove, a tension spring fixing hole is provided at the rear stop of the paddle 2, and a reset tension spring is provided between the tension spring fixing rod and the tension spring fixing hole.

[0013] As a preferred solution of the present invention, the reset tension spring drives the second paddle to return to its original position, and the rear stop of the second paddle just contacts the mechanical switch of the electromagnetic lock.

[0014] On the other hand, the present invention also provides another mechanical unlocking device for an electromagnetic lock, comprising a mechanical lock core and an electromagnetic lock installed together on a cabinet, and the mechanical lock core is located above the electromagnetic lock, and the mechanical lock core and the mechanical switch of the electromagnetic lock are connected by a transmission rope assembly, and when the key rotates the mechanical lock core, it triggers the mechanical switch of the electromagnetic lock to realize manual opening of the electromagnetic lock.

[0015] As a preferred solution of the present invention, the transmission rope assembly includes a paddle three installed on the rotating shaft of the mechanical lock core, a mounting hole is provided at the edge of the paddle three, a freely rotatable paddle two is movably installed above the electromagnetic lock through the base, a mounting hole is also provided on the front stop of the paddle two, and a steel wire rope is provided between the mounting hole on the paddle three and the mounting hole on the front stop of the paddle two.

[0016] As a preferred solution of the present invention, a through hole groove for inserting a key to rotate the mechanical lock core is provided on the cabinet door. The rear stop of the paddle three is in normal contact with the mechanical switch due to the influence of gravity. When the key is inserted into the through hole groove and the mechanical lock core is rotated, the front stop of the paddle two is driven to move downward to touch the mechanical switch of the electromagnetic lock to unlock the electromagnetic lock.

[0017] The embodiments of the present invention have the following advantages:

[0018] The mechanical unlocking device of the present invention can be used in an emergency when the electromagnetic lock is powered off to ensure normal unlocking and locking operations. The mechanical unlocking device is installed from the front to avoid the problem that the mechanical unlocking device cannot be used when multiple cabinets are arranged side by side. The structure of the mechanical unlocking device is reasonable and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0021] Figure 1 is a cross-sectional view of the mechanical unlocking device in Example 1 of the present invention;

[0022] Figure 2 It is a cross-sectional view of the mechanical unlocking device in Example 2 of the present invention.

[0023] In the figure:

[0024] 1-mechanical lock core; 2-active unlocking assembly; 3-passive paddle assembly; 4-electromagnetic lock; 5-mechanical switch; 6-paddle one; 7-pushing wedge; 8-internal perforation; 9-limiting arc groove; 10-tension spring fixing rod; 11-tension spring fixing hole; 12-reset tension spring; 13-paddle three; 14-installation hole; 15-steel hard rope; 16-through hole groove;

[0025] 201-movable sleeve; 202-thrust rod;

[0026] 301-installation base; 302-pick 2. DETAILED DESCRIPTION

[0027] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figure 1 As shown, the present invention provides a mechanical unlocking device for an electromagnetic lock. In order to open the electromagnetic lock in a power outage, the mechanical unlocking device for manually cutting off the power and opening the electromagnetic lock is arranged on the front of the cabinet door, thereby facilitating manual unlocking in an emergency.

[0030] In this embodiment, the locking and unlocking methods of the electromagnetic lock are the same as those in the prior art. The main body of the electromagnetic lock is installed on the cabinet body, and the lock tongue is installed on the cabinet door. When the cabinet door is closed, the lock tongue will hit into the electromagnetic lock hook to lock the cabinet door. When the cabinet is powered off, the electromagnetic lock needs to be manually unlocked by a manual mechanical device. The electromagnetic lock is equipped with a mechanical switch. The switch is manually turned to power on the electromagnetic lock. The electromagnetic lock can be manually opened in a power-off state. The electromagnetic lock hook pops open, canceling the locking of the lock tongue, and the cabinet door can be opened.

[0031] The manual mechanical device specifically includes a mechanical lock core 1 and an active unlocking component 2 arranged on the cabinet door, and a passive paddle component 3 arranged in the cabinet body. The mechanical lock core 1 of this embodiment is an existing commonly used lock core. After the key is inserted, it is rotated to unlock. When the mechanical lock core 1 rotates, it drives the active unlocking component 2 to move toward the cabinet body. The passive paddle component 3 opens the mechanical switch 5 of the electromagnetic lock 4 under the push of the active unlocking component 2, and energizes the electromagnetic lock 4 to release the lock tongue.

[0032] The rotating shaft of the mechanical lock core 1 is provided with a paddle 6, on which a pushing wedge 7 is installed. The active unlocking component 2 includes a movable sleeve 201 fixedly arranged on the cabinet door, and a push rod 202 which is telescopic along the horizontal direction is provided at the center of the movable sleeve 201.

[0033] The push wedge block 7 is in the shape of a wedge, and the direction from the end face installed on the paddle 6 to the end face contacting the movable sleeve 201 is specifically in the shape of a lower wedge. Therefore, when the mechanical lock core 1 drives the push wedge block 7 to rotate, the push wedge block 7 pushes the top rod 202 toward the cabinet body, driving the passive paddle assembly 3 to rotate.

[0034] An inner through hole 8 is provided at a position of the cabinet body directly opposite to the push rod 202 , and the push rod 202 passes through the cabinet door and is inserted into the inner through hole 8 . The push rod 202 slides left and right in the inner through hole 8 under the action of the pushing wedge block 7 .

[0035] The passive paddle assembly 3 includes a mounting base 301 fixed above the electromagnetic lock 4, and a paddle 2 302 movably arranged on the mounting base 301, the front stop of the paddle 2 302 faces the push rod 202, and the rear stop of the paddle 2 302 faces the mechanical switch 5 of the electromagnetic lock 4, and the push rod 202 pushes the paddle 2 302 to rotate around the mounting base 301 until the rear stop of the paddle 2 302 presses the mechanical switch 5 of the electromagnetic lock 4.

[0036] When the push rod 202 moves forward toward the inner hole 8 under the action of the pushing wedge block 7, the push rod 202 pushes the front stop of the second paddle 302, and the lower end of the second paddle 302 rotates clockwise around the mounting base 301, and the rear stop of the second paddle 302 presses the mechanical switch 5 of the electromagnetic lock 4 downward to turn on the electromagnetic lock 4 and supply power. At this time, the electromagnetic lock hook pops open, canceling the locking of the lock tongue.

[0037] In order to ensure the stability of the paddle 2 302 during rotation, a limiting arc groove 9 is provided in the middle position of the paddle 2 302, and a tension spring fixing rod 10 is provided in the cabinet body and inserted inside the limiting arc groove 9. The paddle 2 302 rotates along the tension spring fixing rod 10 through the limiting arc groove 9, ensuring that the paddle 2 302 does not shake in other directions, and the paddle 2 302 stably rotates clockwise and counterclockwise around the mounting base 301.

[0038] When the electromagnetic lock hook pops open and the locking of the lock tongue is released, the mechanical lock core 1 is returned to its position and the cabinet door can be opened by pulling it outward. In order to ensure the self-resetting function of the push rod 202, the present embodiment provides a compression spring 203 on the outer sleeve of the push rod 202, and the two ends of the compression spring 203 are respectively installed on the ends of the movable sleeve 201 and the push rod 202.

[0039] When the mechanical lock cylinder 1 is rotated in the reverse direction, the pushing wedge block 7 will be separated from the top rod 202, and the top rod 202 can slide in the movable sleeve 201 and reset under the action of the compression spring 203. The top rod 202 retracts to its original position toward the cabinet door in the horizontal direction, facilitating the next mechanical unlocking operation.

[0040] A tension spring fixing hole 11 is provided at the rear stop of the second paddle 302 , and a reset tension spring 12 is provided between the tension spring fixing rod 10 and the tension spring fixing hole 11 , and the reset tension spring 12 drives the second paddle 302 to return to its original position, and the rear stop of the second paddle 302 just contacts the mechanical switch 5 of the electromagnetic lock 4 .

[0041] That is to say, when the mechanical lock core 1 is rotated in the reverse direction, the push rod 202 is reset under the action of the compression spring 203, and then the second paddle 302 is reset under the action of the reset spring 12, the rear stop of the second paddle 302 is disengaged from the mechanical switch 5, and the electromagnetic lock 4 can work normally.

[0042] In summary, the operation of the electromagnetic lock 4 to electrically unlock is specifically as follows:

[0043] 1. The key drives the mechanical lock core 1 to rotate, pushing the wedge block 7 to use the wedge surface to push the top rod 202 to slide through the inner hole 8 toward the cabinet;

[0044] 2. The push rod 202 applies force to the front block of the second paddle 302, pushing the second paddle 302 to rotate clockwise around the mounting base 301, and the rear block of the second paddle 302 presses down the mechanical switch 5 of the electromagnetic lock 4;

[0045] 3. The electromagnetic lock 4 is energized, the lock hook is pulled to pop out the lock tongue, and the electromagnetic lock releases the fixation on the cabinet door.

[0046] The operation of the electromagnetic lock 4 relocking work is specifically as follows:

[0047] Ⅰ. The key drives the mechanical lock cylinder 1 to rotate in the opposite direction and reset, pushing the wedge block thrust rod 202. Under the action of the compression spring 203, the push rod 202 slides out of the inner hole 8 and resets, and no longer applies force to the front stop of the second paddle 302;

[0048] II. The second paddle 302 rotates in the opposite direction under the action of the reset spring 12, and the rear stop of the second paddle 302 is reset, just located on the upper surface of the mechanical switch 5 of the electromagnetic lock 4, and the electromagnetic lock 4 is powered off again;

[0049] III. Close the cabinet door, and re-fix the lock tongue of the cabinet door in the lock hook of the electromagnetic lock 4, so as to re-lock the cabinet door and restore the normal locking function of the electromagnetic lock 4.

[0050] Example 2

[0051] Different from Example 1, Figure 2 As shown, the mechanical lock core 1 and the electromagnetic lock 4 in this embodiment are both installed on the cabinet body, and the mechanical lock core 1 is arranged above the electromagnetic lock 4, a through hole groove 16 for inserting a key to rotate the mechanical lock core 1 is provided on the cabinet door, a paddle three 13 is provided on the rotating shaft of the mechanical lock core 1, a mounting hole 14 is provided on the paddle three 13, a mounting hole 14 is also provided on the front stopper of the paddle two 302, and a steel wire rope 15 is provided between the mounting hole 14 on the paddle three 13 and the mounting hole 14 on the front stopper of the paddle two 302.

[0052] The installation method of the second paddle 302 remains unchanged. When the mechanical lock core 1 rotates driven by the key, the third paddle 13 rotates synchronously therewith, pulling up the steel wire rope 15. The second paddle 302 rotates clockwise along the mounting base 301 to press down the mechanical switch 5 of the electromagnetic lock 4, thereby supplying power to the electromagnetic lock 4, and the lock hook of the electromagnetic lock 4 pops open to release the tongue lock of the cabinet door. After the key of the mechanical lock core 1 is pulled out, the cabinet door can be opened, and the second paddle 302 is reset under the action of the reset spring 12, and the electromagnetic lock is powered off again.

[0053] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A mechanical unlocking device for an electromagnetic lock, characterized in that: It comprises a mechanical lock core (1) and an active unlocking assembly (2) arranged on a cabinet door, and a passive paddle assembly (3) arranged in the cabinet and connected to a mechanical switch (5) of an electromagnetic lock (4), wherein the mechanical lock core (1) is connected to the active unlocking assembly (2); When the mechanical lock core (1) is rotated to unlock, the active unlocking component (2) is driven to push the passive paddle component (3) inward, so that the passive paddle component (3) triggers the mechanical switch (5) of the electromagnetic lock (4) to realize manual opening of the electromagnetic lock (4); A paddle (6) is provided on the rotating shaft of the mechanical lock core (1), and a pushing wedge (7) is mounted on the paddle (6). The active unlocking component (2) comprises a movable sleeve (201) fixedly arranged on the cabinet door, and a push rod (202) is provided at the center of the movable sleeve (201) and is telescopic in the horizontal direction.

2. The mechanical unlocking device of an electromagnetic lock according to claim 1, characterized in that: The passive paddle assembly (3) comprises a mounting base (301) fixed above the electromagnetic lock (4), and a second paddle (302) movably arranged on the mounting base (301), the front stop of the second paddle (302) facing the push rod (202), the rear stop of the second paddle (302) facing the mechanical switch (5) of the electromagnetic lock (4), and the push rod (202) pushes the second paddle (302) to rotate around the mounting base (301) until the rear stop of the second paddle (302) presses the mechanical switch (5) of the electromagnetic lock (4).

3. The mechanical unlocking device of an electromagnetic lock according to claim 1, characterized in that: A compression spring (203) is provided on the outer movable sleeve of the push rod (202), and two ends of the compression spring (203) are respectively mounted on the ends of the movable sleeve (201) and the push rod (202).

4. The mechanical unlocking device of an electromagnetic lock according to claim 1, characterized in that: An inner through hole (8) is provided at a position of the cabinet body directly opposite to the push rod (202); the push rod (202) passes through the cabinet door and is inserted into the inner through hole (8); and the push rod (202) slides left and right in the inner through hole (8) under the action of the pushing wedge (7).

5. The mechanical unlocking device of an electromagnetic lock according to claim 2, characterized in that: A limiting arc groove (9) is provided in the middle of the second paddle (302); a tension spring fixing rod (10) inserted in the limiting arc groove (9) is provided in the cabinet; the second paddle (302) rotates along the tension spring fixing rod (10) through the limiting arc groove (9); a tension spring fixing hole (11) is provided at the rear stop of the second paddle (302); and a reset tension spring (12) is provided between the tension spring fixing rod (10) and the tension spring fixing hole (11).

6. The mechanical unlocking device of an electromagnetic lock according to claim 5, characterized in that: The return tension spring (12) drives the second paddle (302) to return to its original position, and the rear stop of the second paddle (302) just contacts the mechanical switch (5) of the electromagnetic lock (4).

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