Mechanical unlocking device for an electromagnetic lock

Abstract

The application relates to the technical field of electromagnetic lock, in particular to a mechanical unlocking device of an electromagnetic lock, which comprises a lock body one, an electromagnetic transmission part is arranged in the lock body one, a lock tongue is movably arranged at the bottom of the electromagnetic transmission part, a lock body two is arranged on one side of the lock body one, a locking groove is arranged in the lock body two, an unlocking assembly is arranged, the unlocking assembly comprises a lock cylinder, an extrusion piece is fixedly connected to one side of the lock cylinder, a transmission piece is arranged at the bottom of the extrusion piece, an unlocking piece is arranged at the bottom of the transmission piece, and the unlocking piece is used for pushing the lock tongue out of the locking groove when the lock is mechanically unlocked; a reset piece is arranged in the lock body two, and the reset piece is used for resetting the unlocking piece; a secondary locking prevention assembly is arranged, and the secondary locking prevention assembly comprises an elastic piece; the electromagnetic lock mechanical unlocking device is provided with the extrusion piece matched with the transmission piece, the unlocking piece can be conveniently pushed to one side of the lock body one, the lock tongue is separated from the locking groove, and the purpose of unlocking the electromagnetic lock is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electromagnetic lock, in particular to a mechanical unlocking device of electromagnetic lock. BACKGROUND

[0002] The electromagnetic lock is an electric lock that relies on the attraction between the electromagnet and the iron block to close the door. It uses the principle of electricity generating magnetism to achieve the effect of locking the door. The electromagnetic lock is usually used for wooden doors, security doors and iron doors, and has stable performance and low repair rate. It is easy to install, does not need to dig a lock hole, only needs to run through a slot and fix the lock body with screws.

[0003] The current electromagnetic lock generally includes a lock body one, a lock body two, an electromagnetic transmission part, a lock tongue and a locking groove. The lock tongue is moved by the electromagnetic transmission part after being powered on. When the lock tongue enters the locking groove in the lock body two, the door can be locked. When the lock tongue leaves the locking groove in the lock body two, the door can be opened. The existing electromagnetic lock is mainly unlocked by an electronic key or an unlocking device connected to the electromagnetic lock by electricity. When the electronic key or the unlocking device connected by electricity fails, the electromagnetic lock cannot receive the opening signal, so the electromagnetic lock cannot be opened. When the electromagnetic lock itself is in a power-off state, the electromagnetic transmission part in the electromagnetic lock cannot generate electromagnetic force to drive the lock tongue to move, so the electromagnetic lock cannot be normally opened, and further improvement and optimization are needed. SUMMARY

[0004] The purpose of the present application is to provide a mechanical unlocking device of electromagnetic lock to solve the problem that when the electronic key or the unlocking device connected by electricity fails, the electromagnetic lock cannot receive the opening signal, so the electromagnetic lock cannot be opened, and when the electromagnetic lock itself is in a power-off state, the electromagnetic transmission part in the electromagnetic lock cannot generate electromagnetic force to drive the lock tongue to move, so the electromagnetic lock cannot be normally opened.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a mechanical unlocking device of electromagnetic lock, comprising a lock body one, an electromagnetic transmission part is installed inside the lock body one, a lock tongue is movably arranged at the bottom of the electromagnetic transmission part, a lock body two is arranged on one side of the lock body one, and a locking groove is arranged inside the lock body two.

[0006] The lock body two further comprises an unlocking assembly, the unlocking assembly comprises a lock cylinder, a pressing piece is fixedly connected to one side of the lock cylinder, a transmission piece is arranged at the bottom of the pressing piece, an unlocking piece is arranged at the bottom of the transmission piece, and the unlocking piece is used to push the lock tongue out of the locking groove during mechanical unlocking.

[0007] A reset piece is arranged in the lock body two, and the reset piece is used to reset the unlocking piece.

[0008] The secondary locking prevention assembly comprises an elastic member, one side of the elastic member is provided with an abutting member, the inside of the lock body two is provided with a pressing groove corresponding to the abutting member, and the transmission member is fixed through cooperation of the abutting member and the pressing groove;

[0009] The protection assembly comprises a covering member, and the covering member is used for shielding the lock core lock port.

[0010] Preferably, the inside of the lock body two is provided with an unlocking groove, and a lock core is installed at the upper end of the unlocking groove.

[0011] Preferably, the extrusion member is provided as a horizontal plate-shaped member, one side of the extrusion member is provided as a semicircle, the transmission member is movably located in the lock body two, the upper end of the transmission member is provided as an arc surface, the transmission member is provided as a semicircle, and the bottom of the transmission member extends into the locking groove.

[0012] Preferably, the inside of the locking groove movably provided with an unlocking member, the size of the unlocking member is matched with the locking groove, the middle of the unlocking member is provided with an extrusion groove, the other side of the extrusion groove is provided as an inclined surface, the extrusion groove is aligned with the transmission member, the bottom of the transmission member is attached to the upper end of the inclined surface of the extrusion groove, and one side of the unlocking member is fixedly connected with a reset member.

[0013] Preferably, the middle of the transmission member is provided with a movable groove, the movable groove is provided as a T-shaped columnar groove, one side of the movable groove penetrates the transmission member, the inside of the movable groove is fixedly installed with an elastic member, one end of the elastic member close to the penetration opening of the movable groove is fixedly connected with an abutting member, the abutting member is provided as a T-shaped columnar structure, the size of the abutting member is matched with the movable groove, and the end of the abutting member close to the penetration opening of the movable groove is aligned with the surface of the transmission member.

[0014] Preferably, the pressing groove is provided as a T-shaped columnar groove, the size of one side of the pressing groove close to the transmission member is greater than that of the abutting member, the two sides of the pressing groove penetrate the lock body two, one side of the pressing groove is fixedly installed with an abutting member one, the abutting member one is provided as a ring structure with magnetism, the inside of the pressing groove movably provided with a moving member, the moving member is provided as a columnar structure, the size of the moving member is matched with the size of one side of the pressing groove close to the transmission member, one side of the moving member away from the transmission member is fixedly connected with an abutting member two, the abutting member two is provided as a ring structure with magnetism, the abutting member two repels the abutting member one, the middle of one side of the moving member away from the transmission member is fixedly connected with an inner pushing member, one side of the inner pushing member penetrates the pressing groove and extends to the outside.

[0015] Preferably, one side of the upper end of the lock body two is provided with a rotating groove, the inside of the rotating groove movably provided with a covering member, and the covering member is provided as a plate structure with an angle, the other side of the covering member covers the outside of the lock core, one side of the covering member close to the lock core is fixedly connected with a lock port plugging member corresponding to the lock core, the lock port plugging member is provided as a horizontal strip-shaped member of rubber material, the size of the lock port plugging member is greater than that of the lock port of the lock core, one side of the covering member is provided with a rotating shaft, and the two ends of the rotating shaft movably located in the lock body two.

[0016] Preferably, the lock body two sides are provided with a placing cavity, the placing cavity is movably provided with a placing piece, the placing piece is provided as a T-shaped pulling piece, the placing piece other side is internally provided with a placing groove, the placing groove is provided with an unlocking key, and the placing piece one side is provided with a buckling groove.

[0017] Preferably, the rotating shaft lower end is provided with a pressing groove, the pressing groove is provided as a horizontal rectangular groove, the pressing groove is movably provided with a pressing piece, the pressing piece is provided as a vertical rod structure, the pressing piece bottom is provided with a positioning piece, the positioning piece is provided as a rectangular block, the placing piece upper end is provided with a positioning groove corresponding to the positioning piece, and the positioning piece bottom is located in the positioning groove.

[0018] Preferably, the rotating shaft middle part is provided with a pressing moving groove corresponding to the pressing piece, the pressing piece upper end penetrates the pressing groove and extends into the pressing moving groove, the pressing piece upper end is annularly provided with a plurality of fixing pieces, the fixing pieces are provided as semicircular protrusions, the pressing moving groove is internally provided with a transmission groove corresponding to the fixing pieces, the transmission groove is provided as a spiral groove with a semicircular cross section, and the fixing pieces are located in the transmission groove.

[0019] Compared with the prior art, the electromagnetic lock mechanical unlocking device has the following beneficial effects:

[0020] The electromagnetic lock mechanical unlocking device is provided with the pressing piece and the transmission piece, so that the unlocking piece can be pushed to the side of the lock body one, the lock tongue is separated from the locking groove, the electromagnetic lock is unlocked, the unlocking key or the electrically connected unlocking device is not lost, the electromagnetic lock cannot be opened when the electronic key or the electrically connected unlocking device fails, and the electromagnetic lock cannot be opened when the electromagnetic lock is powered off.

[0021] The transmission piece is limited after moving down, the unlocking piece keeps the state of ejecting the lock tongue, the lock tongue does not re-enter the locking groove after being ejected, the unlocking piece is reset after the lock body one and the lock body two are separated, the covering piece can protect the lock hole of the lock cylinder, dust or sundries cannot enter the lock cylinder, the covering piece is fixed outside the lock cylinder through the lock hole plugging piece, the unlocking key is not lost when mechanical unlocking is needed, the placing piece is limited through the positioning piece and the positioning groove, the placing piece is not opened by others during normal use, and the unlocking key can be taken out when needed through the transmission groove and the fixing piece.

[0022] The covering piece can protect the lock hole of the lock cylinder, dust or sundries cannot enter the lock cylinder, the covering piece is fixed outside the lock cylinder through the lock hole plugging piece, the unlocking key is not lost when mechanical unlocking is needed, the placing piece is limited through the positioning piece and the positioning groove, the placing piece is not opened by others during normal use, and the unlocking key can be taken out when needed through the transmission groove and the fixing piece.

[0023] The covering piece can protect the lock hole of the lock cylinder, dust or sundries cannot enter the lock cylinder, the covering piece is fixed outside the lock cylinder through the lock hole plugging piece, the unlocking key is not lost when mechanical unlocking is needed, the placing piece is limited through the positioning piece and the positioning groove, the placing piece is not opened by others during normal use, and the unlocking key can be taken out when needed through the transmission groove and the fixing piece. BRIEF DESCRIPTION OF DRAWINGS

[0024] The application will be further described below with reference to the drawings.

[0025] Figure 1 Structure diagram of the present application;

[0026] Figure 2 Structure diagram of the present application;

[0027] Figure 3 Structure diagram of the present application;

[0028] Figure 4 Structure diagram of the present application; Figure 3 Structure diagram of the present application;

[0029] Figure 5 Structure diagram of the present application;

[0030] Figure 6 Structure diagram of the present application;

[0031] Figure 7 Structure diagram of the present application;

[0032] In the figure: lock body one 1, lock body two 2, electromagnetic transmission part 3, lock bolt 4, unlocking slot 5, lock core 6, extrusion part 7, transmission part 8, locking slot 9, unlocking part 10, extrusion slot 11, reset part 12, movable slot 13, elastic part 14, resisting part 15, pressing slot 16, resisting part one 17, moving part 18, resisting part two 19, inner pushing part 20, rotating slot 21, covering part 22, lock opening plugging part 23, rotating shaft 24, placing cavity 25, placing part 26, unlocking key 27, buckle slot 28, pressing down slot 29, pressing down part 30, positioning part 31, positioning slot 32, fixing part 33, pressing down moving slot 34, transmission slot 35. DETAILED DESCRIPTION

[0033] In order to more clearly explain the overall concept of the present application, the following will be described in detail in an exemplary manner combined with the drawings in the specification.

[0034] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0035] In addition, in the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. However, it is noted that direct connection means that the connection between the two main bodies does not form a connection relationship through an excessive structure, but is connected to form a whole only through the connection structure. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present application, the description referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] Please refer to Figures 1-2 The present application provides a technical solution: a mechanical unlocking device for an electromagnetic lock, comprising a lock body one 1, an electromagnetic transmission part 3 is installed inside the lock body one 1, a lock tongue 4 is movably arranged at the bottom of the electromagnetic transmission part 3, a lock body two 2 is arranged on one side of the lock body one 1, and a locking groove 9 is arranged inside the lock body two 2:

[0039] The unlocking assembly comprises an unlocking slot 5 located in the lock body two 2, an upper end of the unlocking slot 5 is provided with a lock cylinder 6, the lock cylinder 6 penetrates through the lock body two 2 and extends to the outside, one side of the lock cylinder 6 is fixedly connected with an extrusion piece 7, the extrusion piece 7 can be driven to rotate through the lock cylinder 6, the extrusion piece 7 is provided in the form of a horizontal plate, one side of the extrusion piece 7 is provided in the form of a semicircle, a bottom of the extrusion piece 7 is provided with a transmission piece 8, the transmission piece 8 is movably arranged in the lock body two 2, an upper end of the transmission piece 8 is provided in the form of an arc surface, the transmission piece 8 is provided in the form of a semicircle, a bottom of the transmission piece 8 extends into a locking slot 9, the extrusion piece 7 designed in the form of a semicircle cooperates with the transmission piece 8 provided in the form of an arc at the upper end, so that the transmission piece 8 can be conveniently extruded downward, and the transmission piece 8 extends into the locking slot 9;

[0040] An unlocking piece 10 is movably arranged in the locking slot 9, the unlocking piece 10 is matched with the locking slot 9 in size, a middle of the unlocking piece 10 is provided with an extrusion slot 11, the other side of the extrusion slot 11 is provided in the form of an inclined surface, the extrusion slot 11 is aligned with the transmission piece 8, a bottom of the transmission piece 8 is attached to the upper end of the inclined surface of the extrusion slot 11, one side of the unlocking piece 10 is fixedly connected with a reset piece 12, and the unlocking piece 10 is used to push the locking bolt 4 out of the locking slot 9 when mechanical unlocking is performed;

[0041] Through the attachment of the transmission piece 8 and the inclined surface of the extrusion slot 11, when the transmission piece 8 is pressed downward, the unlocking piece 10 can be driven to move to the other side along the locking slot 9, so that the unlocking piece 10 pushes the locking bolt 4 out of the locking slot 9, the purpose of mechanical unlocking is achieved, when the electronic key or the electrically connected unlocking device malfunctions, the electromagnetic lock cannot receive the opening signal, the electromagnetic lock cannot be opened, and meanwhile, the situation that the electromagnetic lock cannot be opened when the electromagnetic lock itself is powered off is avoided, and meanwhile, the reset piece 12 fixed to one side of the unlocking piece 10 can be used to reset the unlocking piece 10 after the lock body one 1 and the lock body two 2 are separated, and the extrusion slot 11 resets the transmission piece 8 by extruding the transmission piece 8 through the inclined surface when the unlocking piece 10 is reset;

[0042] Please refer to Figures 3-4 After unlocking, the lock body two 2 in the lock body one 1 contains components such as springs, which may cause the locking bolt 4 to re-enter the locking slot 9 after unlocking, therefore, a secondary locking prevention assembly is arranged, the secondary locking prevention assembly comprises a movable slot 13, the movable slot 13 is located in the middle of the transmission piece 8, the movable slot 13 is provided in the form of a T-shaped columnar slot, the movable slot 13 penetrates through one side of the transmission piece 8, an elastic piece 14 is fixedly arranged in the movable slot 13, a resisting piece 15 is fixedly connected to one end of the elastic piece 14 close to a penetration opening of the movable slot 13, the resisting piece 15 is provided in the form of a T-shaped columnar structure, the resisting piece 15 is matched with the movable slot 13 in size, one end of the resisting piece 15 close to the penetration opening of the movable slot 13 is aligned with the surface of the transmission piece 8, and the elastic piece 14 can be used to conveniently extrude the resisting piece 15 outward;

[0043] Meanwhile, the lock body two 2 is provided with a pressing groove 16 corresponding to the abutting piece 15, the pressing groove 16 is provided as a T-shaped columnar groove, the size of the side of the pressing groove 16 close to the transmission piece 8 is greater than the abutting piece 15, the two sides of the pressing groove 16 are penetrated through the lock body two 2, after the abutting piece 15 is clamped into the pressing groove 16, the transmission piece 8 can be fixed, and then the unlocking piece 10 is fixed after pushing the lock bolt 4 out of the locking groove 9, so that the lock bolt 4 cannot re-enter the locking groove 9 when the lock body one 1 and the lock body two 2 have not been separated, and the purpose of preventing the lock body one 1 and the lock body two 2 from being locked again is achieved;

[0044] Since the unlocking piece 10 needs to be reset after unlocking is completed for subsequent use, the pressing groove 16 is fixedly provided with an abutting piece one 17 on one side, the abutting piece one 17 is provided as a ring structure with magnetism, the pressing groove 16 is movably provided with a moving piece 18 inside, the moving piece 18 is provided as a columnar structure, the size of the moving piece 18 is matched with the size of the side of the pressing groove 16 close to the transmission piece 8, and the moving piece 18 matched with the side of the pressing groove 16 is greater than the abutting piece 15, so that the abutting piece 15 can push the moving piece 18 along the pressing groove 16, the side of the moving piece 18 away from the transmission piece 8 is fixedly connected with an abutting piece two 19, the abutting piece two 19 is provided as a ring structure with magnetism, the abutting piece two 19 repels the abutting piece one 17, the repelling force between the abutting piece two 19 and the abutting piece one 17 is less than the elastic force of the elastic piece 14, and meanwhile, through the design that the abutting piece two 19 repels the abutting piece one 17, the moving piece 18 can be reset after the abutting piece 15 leaves the pressing groove 16, the middle of the side of the moving piece 18 away from the transmission piece 8 is fixedly connected with an inner pushing piece 20, the side of the inner pushing piece 20 penetrates through the pressing groove 16 and extends to the outside, through the inner pushing piece 20, the abutting piece 15 can be pushed away from the pressing groove 16 by the moving piece 18, so that the abutting piece 15 is not limited to the transmission piece 8, and the resetting piece 12 can drive the unlocking piece 10 to shrink and reset, which is convenient for subsequent use;

[0045] Please refer to Figures 5-7When the electronic key or the electrically connected unlocking device is normally used, the lock hole of the lock cylinder 6 is always open and cannot block external impurities, so a protection assembly is provided, which includes a rotating groove 21 located on one side of the upper end of the lock body two 2, and a cover 22 movably arranged in the rotating groove 21, and the cover 22 is provided as a plate-shaped structure with an angle, and the other side of the cover 22 covers the outside of the lock cylinder 6, and the cover 22 is used to block the lock hole of the lock cylinder 6 to prevent dust from entering the lock cylinder 6, and the side of the cover 22 close to the lock cylinder 6 is fixedly connected with a lock hole plugging piece 23 corresponding to the lock cylinder 6, and the lock hole plugging piece 23 is provided as a horizontal strip-shaped piece made of rubber, and the size of the lock hole plugging piece 23 is larger than the size of the lock hole of the lock cylinder 6, and the one side of the cover 22 is provided with a rotating shaft 24 movably arranged in the lock body two 2 at both ends, and the rubber lock hole plugging piece 23 can be easily clamped into the lock hole of the lock cylinder 6, and after being clamped into the lock hole of the lock cylinder 6, the cover 22 can be fixed outside the lock cylinder 6 to achieve the purpose of protecting the lock cylinder 6.

[0046] At the same time, since the unlocking key 27 may not be with you or lost when mechanical unlocking is needed, a placing cavity 25 is provided on one side of the lock body two 2, and a placing piece 26 is movably arranged in the placing cavity 25, and the placing piece 26 is provided as a T-shaped pulling piece, and the other side of the placing piece 26 is provided with a placing groove, and the unlocking key 27 is placed in the placing groove, and the one side of the placing piece 26 is provided with a buckle groove 28, and the unlocking key 27 can be placed with the lock body two 2 by the placing piece 26, so as to avoid the situation that the unlocking key 27 is not with you or lost when stored separately.

[0047] In addition, since the placing piece 26 may move when the unlocking key 27 is not used, a depression groove 29 is provided at the lower end of the rotating shaft 24, and the depression groove 29 is provided as a horizontal rectangular groove, and a depression piece 30 is movably arranged in the depression groove 29, and the depression piece 30 is provided as a vertical rod-shaped structure, and a positioning piece 31 is provided at the bottom of the depression piece 30, and the positioning piece 31 is provided as a rectangular block-shaped piece, and a positioning groove 32 is provided at the upper end of the placing piece 26 corresponding to the positioning piece 31, and the bottom of the positioning piece 31 is located in the positioning groove 32, and the placing piece 26 is fixed by clamping the positioning piece 31 into the depression piece 30, so as to avoid the movement of the placing piece 26 when the unlocking key 27 is not used.

[0048] Because when the electromagnetic lock is mechanically unlocked, the cover 22 needs to be rotated first, so a pressing displacement groove 34 is arranged in the middle of the rotating shaft 24 corresponding to the pressing piece 30, the upper end of the pressing piece 30 penetrates the pressing groove 29 and extends into the pressing displacement groove 34, the upper end of the pressing piece 30 is annularly provided with a plurality of fixing pieces 33, the fixing pieces 33 are arranged as semicircular protrusions, the inside of the pressing displacement groove 34 is provided with a transmission groove 35 corresponding to the fixing pieces 33, the transmission groove 35 is arranged as a spiral groove with a semicircular cross section, the fixing pieces 33 are located in the transmission groove 35, when the cover 22 rotates, the inside transmission groove 35 side wall rubs against the fixing pieces 33, so that the fixing pieces 33 drive the pressing piece 30 to move upward along the pressing displacement groove 34, so that the positioning piece 31 is separated from the positioning groove 32, and the placing piece 26 can be taken out of the pressing groove 29.

[0049] When mechanically unlocking, the cover 22 is first pushed away from the lock body one 1, so that the cover 22 rotates around the rotating shaft 24, the cover 22 drives the lock port plugging piece 23 to move away from the lock port of the lock cylinder 6, so that the lock cylinder 6 is no longer protected, at the same time, the cover 22 drives the rotating shaft 24 to rotate, the rotating shaft 24 rubs against the fixing pieces 33 through the inside transmission groove 35, so that the pressing piece 30 moves upward with the rotation of the cover 22, the pressing piece 30 drives the positioning piece 31 to move away from the positioning groove 32, so that the placing piece 26 is no longer limited, and the placing piece 26 can be taken out of the placing cavity 25 through the buckle groove 28, the unlocking key 27 in the placing piece 26 is taken out, the unlocking key 27 is inserted into the lock port of the lock cylinder 6, the lock cylinder 6 is rotated clockwise by ninety degrees, the lock cylinder 6 is pressed by the pressing piece 7 to move downward, the transmission piece 8 rubs against the bottom of the pressing groove 11, so that the unlocking piece 10 moves toward the lock body one 1, the bolt 4 is pushed out of the locking groove 9, the mechanical unlocking is completed, at the same time, the abutting piece 15 is aligned with the pressing groove 16, the elastic piece 14 drives the abutting piece 15 to enter the pressing groove 16 through the elastic force, the transmission piece 8 is locked, so that the bolt 4 cannot re-enter the locking groove 9, and secondary locking is formed; after the lock body one 1 and the lock body two 2 are separated, the inner pushing piece 20 is pushed toward the transmission piece 8, the inner pushing piece 20 presses the abutting piece 15 through the moving piece 18, so that the abutting piece 15 moves away from the pressing groove 16, and the transmission piece 8 is no longer limited, the resetting piece 12 drives the unlocking piece 10 to reset through the elastic force, the unlocking piece 10 resets the transmission piece 8 through the slope of the pressing groove 11, and the lock cylinder 6 is reset, so that the lock body two 2 can be normally used subsequently, the unlocking key 27 is placed in the placing piece 26, the placing piece 26 is placed in the placing cavity 25 again, the cover 22 is reversed, so that the lock port plugging piece 23 is clamped into the lock port of the lock cylinder 6, the lock cylinder 6 is protected, at the same time, the positioning piece 31 is clamped into the positioning groove 32, and the placing piece 26 is locked.

[0050] Those skilled in the art should understand that the above discussion of any embodiment is merely exemplary in nature and is not intended to imply that the present application, including the claims, be limited to these examples; the above embodiments or technical features among different embodiments can also be combined, steps can be implemented in any order, and there are many other changes to the different aspects of the present application as described above, which are not provided in detail for the sake of brevity.

[0051] The present application is intended to cover all such alternatives, modifications, and variations as come within the scope of the broadest possible interpretation of the appended claims. Accordingly, any and all such alternations, modifications, equivalents, improvements and the like are intended to be encompassed by the present application.

Claims

1. An electromagnetic lock mechanical unlocking device, comprising a lock body one (1), an electromagnetic transmission part (3) is installed inside the lock body one (1), a lock tongue (4) is movably arranged at the bottom of the electromagnetic transmission part (3), and a lock body two (2) is arranged on one side of the lock body one (1), and a locking groove (9) is arranged inside the lock body two (2), characterized in that: the lock body two (2) further comprises an unlocking assembly, the unlocking assembly comprises a lock cylinder (6), one side of the lock cylinder (6) is fixedly connected with an extrusion piece (7), the bottom of the extrusion piece (7) is provided with a transmission piece (8), the bottom of the transmission piece (8) is provided with an unlocking piece (10), and the unlocking piece (10) is used for pushing the lock tongue (4) out of the locking groove (9) when mechanically unlocking; one side of the upper end of the lock body two (2) is provided with a rotating groove (21), a cover piece (22) is movably arranged inside the rotating groove (21), and the cover piece (22) is arranged in a plate-shaped structure with an angle, the other side of the cover piece (22) covers the outside of the lock cylinder (6), one side of the cover piece (22) is provided with a rotating shaft (24), and both ends of the rotating shaft (24) are movably arranged in the lock body two (2); an accommodation cavity (25) is arranged in the middle of one side of the lock body two (2), an accommodation piece (26) is movably arranged inside the accommodation cavity (25), the accommodation piece (26) is arranged in a T-shaped pull-out piece, the other side of the accommodation piece (26) is provided with an accommodation groove, and a unlocking key (27) is placed in the accommodation groove; the lower end of the rotating shaft (24) is provided with a pressing groove (29), a pressing piece (30) is movably arranged inside the pressing groove (29), the pressing piece (30) is arranged in a vertical rod-shaped structure, the bottom of the pressing piece (30) is provided with a positioning piece (31), the upper end of the accommodation piece (26) is provided with a positioning groove (32) corresponding to the positioning piece (31), and the bottom of the positioning piece (31) is located in the positioning groove (32); a reset piece (12) is arranged in the lock body two (2), and the reset piece (12) is used for resetting the unlocking piece (10); a secondary locking prevention assembly, the secondary locking prevention assembly comprises an elastic piece (14), one side of the elastic piece (14) is provided with an abutting piece (15), the inside of the lock body two (2) is provided with a pressing groove (16) corresponding to the abutting piece (15), and the transmission piece (8) is fixed by cooperation of the abutting piece (15) and the pressing groove (16); a protection assembly, the protection assembly comprises the cover piece (22), and the cover piece (22) is used for shielding the lock opening of the lock cylinder (6).

2. A mechanical unlocking device for an electromagnetic lock according to claim 1, characterized in that: An unlocking groove (5) is arranged in the lock body two (2), the lock cylinder (6) is mounted at the upper end of the unlocking groove (5), and the lock cylinder (6) penetrates through the lock body two (2) and extends to the outside.

3. A mechanical unlocking device for an electromagnetic lock according to claim 1, characterized in that: The extrusion piece (7) is arranged in a horizontal plate-shaped piece, one side of the extrusion piece (7) is arranged in a semicircular shape, the transmission piece (8) is movably arranged in the lock body two (2), the upper end of the transmission piece (8) is arranged in an arc surface, the transmission piece (8) is arranged in a semicircular shape, and the bottom of the transmission piece (8) extends into the locking groove (9).

4. A mechanical unlocking device for an electromagnetic lock according to claim 3, characterized in that: The unlocking piece (10) is movably arranged in the locking groove (9), the unlocking piece (10) is matched with the locking groove (9) in size, the middle of the unlocking piece (10) is provided with an extrusion groove (11), one side of the extrusion groove (11) is provided as an inclined surface, the extrusion groove (11) is aligned with the transmission piece (8), the bottom of the transmission piece (8) is attached to the upper end of the inclined surface of the extrusion groove (11), and the unlocking piece (10) is fixedly connected with the reset piece (12) on one side.

5. A mechanical unlocking device for an electromagnetic lock according to claim 4, characterized in that: The middle of the transmission piece (8) is provided with a movable groove (13), the movable groove (13) is provided as a T-shaped columnar groove, one side of the movable groove (13) penetrates the transmission piece (8), the inside of the movable groove (13) is fixedly installed with an elastic piece (14), one end of the elastic piece (14) close to the penetration opening of the movable groove (13) is fixedly connected with an abutting piece (15), the abutting piece (15) is provided as a T-shaped columnar structure, the abutting piece (15) is matched with the movable groove (13) in size, and the end of the abutting piece (15) close to the penetration opening of the movable groove (13) is aligned with the surface of the transmission piece (8).

6. A mechanical unlocking device for an electromagnetic lock according to claim 1, characterized in that: The pressing groove (16) is provided as a T-shaped columnar groove, the side of the pressing groove (16) close to the transmission piece (8) is larger in size than the abutting piece (15), the pressing groove (16) penetrates the lock body two (2) on both sides, the pressing groove (16) is fixedly installed with an abutting and pressing piece one (17) on one side, the abutting and pressing piece one (17) is provided as a ring-shaped structure with magnetism, the inside of the pressing groove (16) is movably arranged with a moving piece (18), the moving piece (18) is provided as a columnar structure, the moving piece (18) is matched with the side of the pressing groove (16) close to the transmission piece (8) in size, the side of the moving piece (18) away from the transmission piece (8) is fixedly connected with an abutting and pressing piece two (19), the abutting and pressing piece two (19) is provided as a ring-shaped structure with magnetism, the abutting and pressing piece two (19) repels the abutting and pressing piece one (17), the middle of the side of the moving piece (18) away from the transmission piece (8) is fixedly connected with an inner pushing piece (20), one side of the inner pushing piece (20) penetrates the pressing groove (16) and extends to the outside.

7. A mechanical unlocking device for an electromagnetic lock according to claim 1, characterized in that: The side of the covering piece (22) close to the lock cylinder (6) is fixedly connected with a lock opening blocking piece (23) corresponding to the lock cylinder (6), the lock opening blocking piece (23) is provided as a horizontal strip-shaped piece made of rubber material, and the size of the lock opening blocking piece (23) is larger than the size of the lock opening of the lock cylinder (6).

8. A mechanical unlocking device for an electromagnetic lock according to claim 1, characterized in that: The side of the placing piece (26) is provided with a buckling groove (28).

9. A mechanical unlocking device for an electromagnetic lock according to claim 1, characterized in that: The lower pressing groove (29) is provided as a horizontal rectangular groove, and the positioning piece (31) is provided as a rectangular block-shaped piece.

10. A mechanical unlocking device for an electromagnetic lock according to claim 1, characterized in that: The middle of the rotating shaft (24) is provided with a lower pressing moving groove (34) corresponding to the lower pressing piece (30), the upper end of the lower pressing piece (30) penetrates the lower pressing groove (29) and extends into the lower pressing moving groove (34), the upper end of the lower pressing piece (30) is annularly provided with a plurality of fixing pieces (33), the fixing pieces (33) are provided as semicircular protrusions, the inside of the lower pressing moving groove (34) is provided with a transmission groove (35) corresponding to the fixing pieces (33), the transmission groove (35) is provided as a spiral groove with a semicircular cross section, and the fixing pieces (33) are located in the transmission groove (35).

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