CN215761003U - Electromagnetic lock - Google Patents

Abstract

The utility model provides an electromagnetic lock. The electromagnetic lock comprises a lock shell, a bolt, an electromagnet, an elastic piece, a lock pin mounting frame and a lock pin; the lock shell is provided with an installation cavity and an avoidance groove which are communicated with each other, and the avoidance groove comprises a first avoidance part and a second avoidance part which are communicated with each other; the electromagnet is arranged in the mounting cavity, the spring bolt is connected with the electromagnet, and the spring bolt comprises a blocking part which can block the second avoiding part; the elastic piece is used for driving the moving shaft to reset; the lockpin mounting bracket is provided with a mounting hole, the lockpin is detachably connected with the lockpin mounting bracket, the lockpin can penetrate through the mounting hole, the lockpin can move along the length direction of the lockpin to get in and out the mounting cavity from the first avoidance part, and the lockpin can move along the width direction of the lockpin to get in and out the mounting cavity from the second avoidance part. The electromagnetic lock provided by the utility model can be unlocked by directly pulling out the lock pin under emergency, and the unlocking mode under emergency is convenient and quick.

Description

Electromagnetic lock

Technical Field

The utility model relates to the technical field of locks, in particular to an electromagnetic lock.

Background

An electromagnetic lock is a common lockset, and the electromagnetic lock controls an electromagnet to generate a magnetic field through the on-off control of current, and the electromagnet drives a 'bolt' to extend out or retract so as to achieve the locking or unlocking function. However, when dangerous situations (such as earthquake, fire, etc.) occur, some existing electromagnetic locks cannot be opened quickly, and the danger avoiding speed of people is reduced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the electromagnetic lock provided by the utility model can be unlocked by directly pulling out the lock pin in an emergency, is convenient and quick to unlock in the emergency, is not influenced by the running condition of the electromagnet, and is beneficial to improving the danger avoiding speed or the escape speed of people.

An electromagnetic lock according to the present invention comprises: the lock shell is used for being connected with the first installation part, the lock shell is provided with an installation cavity and an avoiding groove, the avoiding groove is communicated with the installation cavity, the avoiding groove comprises a first avoiding part and a second avoiding part which are communicated with each other, and the first avoiding part and the second avoiding part are respectively positioned on two adjacent sides of the lock shell; a lock pin mounting bracket for connection with the second mounting member; the lock pin is detachably connected with the lock pin mounting frame, the lock pin can move relative to the lock shell along the length direction of the lock pin to enter and exit the mounting cavity from the first avoidance part, and the lock pin can move relative to the lock shell along the width direction of the lock pin to enter and exit the mounting cavity from the second avoidance groove; the lock bolt comprises a blocking part, the blocking part can block the second avoiding part, and the blocking part can abut against the lock pin to block the lock pin from leaving the mounting cavity from the second avoiding part; the electromagnet is connected with the lock shell, arranged in the installation cavity, connected with the bolt, and used for driving the bolt to move towards the direction close to the electromagnet so as to remove the shielding of the blocking part on the second avoiding part; the elastic piece is arranged in the installation cavity and used for driving the lock tongue to reset.

The electromagnetic lock provided by the embodiment of the utility model at least has the following beneficial effects: when the electromagnet is in a power-off state, the blocking part blocks the second avoiding part, the lock pin is inserted into the mounting cavity, and if the door is to be opened at the moment, the mutual blocking between the lock pin and the lock tongue needs to be released; however, when the lock pin is not withdrawn from the lock pin mounting bracket, the blocking portion abuts against the lock pin to prevent the lock case and the lock pin mounting bracket from being separated from each other, thereby maintaining the locked state of the door. When the electromagnet is in an electrified state, the lock tongue is moved away, the blocking part does not shield the second avoiding part any more, the lock pin cannot be blocked from leaving the mounting cavity from the second avoiding part, and the door can be opened easily at the moment. When a dangerous situation occurs, a user can directly pull out the lock pin from the lock pin mounting frame, after the lock pin is pulled out, the constraint between the lock shell and the lock pin mounting frame disappears, the lock shell and the lock pin mounting frame can be easily separated, and the door can be quickly opened; the door opening mode does not need to use a controller for controlling the electromagnet and is not influenced by the fault of the electromagnet. Namely, in normal use, the lock pin leaves the mounting cavity from the second avoiding part, and in emergency, the lock pin leaves the mounting cavity from the first avoiding part; the utility model sets the unlocking mode under normal use condition and the unlocking mode under emergency condition respectively by the locking pin leaving the mounting cavity from different positions of the avoiding groove. Therefore, the electromagnetic lock provided by the utility model can be unlocked by directly pulling out the lock pin in an emergency, the unlocking mode in the emergency is convenient and quick, the influence of the running condition of the electromagnet is avoided, and the danger avoiding speed or the escape speed of people can be improved.

According to some embodiments of the utility model, the pin mount comprises: the first connecting part is used for being connected with the second mounting part; the two second connecting portions are respectively connected with two ends of the first connecting portion, the two second connecting portions protrude towards the same side of the first connecting portion, an accommodating space is defined by the first connecting portion and the two second connecting portions together, the accommodating space is used for accommodating one part of the lock shell, mounting holes are formed in the second connecting portions, the mounting holes are used for the lock pins to penetrate through, and the mounting holes are communicated with the accommodating space.

According to some embodiments of the utility model, two of the second connection parts are connected to a top end of the first connection part and a bottom end of the first connection part, respectively, the latch comprises: the rod part is used for penetrating through the mounting hole and the accommodating space; a head connected to the top end of the rod; the second connecting part positioned at the top end of the first connecting part is abutted against the bottom surface of the head part to prevent the lock pin from falling off.

According to some embodiments of the utility model, the avoidance groove further includes a third avoidance portion, the third avoidance portion and the first avoidance portion are respectively communicated with two ends of the second avoidance portion, and the lock case includes: the first avoiding part is arranged on the top plate; the third avoidance part is arranged on the bottom plate; the two side plates are arranged at intervals, and the second avoidance part is arranged on one side plate; the top end of each side plate is connected with the top plate, the bottom end of each side plate is connected with the bottom plate, and the top plate, the bottom plate and the two side plates are arranged in an enclosing mode to form the installation cavity.

According to some embodiments of the utility model, the bolt further comprises a holding portion, the electromagnetic lock further comprises a lock cylinder, the lock cylinder comprising: the fixing part is connected with the lock shell; the rotating part is connected to the inside of the fixing part and provided with a lock hole for a key to insert; the shifting piece is connected with one end of the rotating part, is positioned in the mounting cavity and abuts against the abutting part; the rotating part and the plectrum can rotate along with the rotation of the key, and the plectrum rotates to enable the lock tongue to move.

According to some embodiments of the present invention, the electromagnetic lock further includes a limiting member, the limiting member is connected to the lock housing, one end of the limiting member protrudes into the installation cavity, and the limiting member is configured to abut against the lock tongue to block the lock tongue from moving toward a direction close to the fixing portion.

According to some embodiments of the utility model, the electromagnet comprises: the moving shaft, one end of the said moving shaft is connected with said lock tongue; the base is connected with the lock shell, the base is located in the installation cavity, the base is provided with an accommodating cavity, one end of the base is provided with a first through hole, the first through hole is communicated with the accommodating cavity, and the first through hole is used for the movement shaft to pass through and enter the accommodating cavity; the coil is arranged in the accommodating cavity and can be electrified to generate a magnetic field, and the moving shaft penetrates through the center of the coil.

According to some embodiments of the utility model, the blocking portion includes a guide wall for contacting the lock pin, the guide wall is disposed obliquely with respect to a moving path of the moving shaft, and the lock tongue moves in a direction approaching the electromagnet as the lock pin enters the mounting chamber from the second escape portion.

According to some embodiments of the present invention, a second through hole is opened at an end of the base away from the first through hole, the second through hole is communicated with the accommodating cavity, and the second through hole is used for the movement shaft to pass through; the electromagnetic lock further comprises a limit switch, the limit switch is connected to one end, provided with the second via hole, of the base, and the limit switch is used for detecting the position of the moving shaft.

According to some embodiments of the present invention, the elastic member is a spring, the elastic member is sleeved outside the moving shaft, one end of the elastic member abuts against the base, and the other end of the elastic member abuts against the lock tongue.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the following figures and examples, in which:

FIG. 1 is an overall schematic view of an electromagnetic lock of the present invention;

FIG. 2 is a schematic view of another angle of the electromagnetic lock of FIG. 1;

FIG. 3 is an exploded view of the electromagnetic lock of FIG. 1;

FIG. 4 is a schematic diagram of the internal structure of the electromagnetic lock of FIG. 1;

FIG. 5 is a schematic diagram of the internal structure of the electromagnetic lock of FIG. 1 based on another cross-section;

FIG. 6 is a schematic diagram of the electromagnetic lock in an unlocked state;

FIG. 7 is a schematic view of another angle of the electromagnetic lock in the unlocked state;

FIG. 8 is a schematic view of the electromagnetic lock in a closed state;

FIG. 9 is a schematic view of another angle of the electromagnetic lock in the closed state.

Reference numerals: 101-lock shell, 102-lock pin mounting rack, 103-lock pin, 104-lock core, 105-lock hole, 201-lock shell mounting rack, 202-adjusting groove, 301-first connecting part, 302-second connecting part, 303-mounting hole, 304-accommodating space, 305-end cover, 306-limiting part, 307-bottom plate, 308-side plate, 309-top plate, 310-head part, 311-rod part, 312-avoiding groove, 313-holding part, 314-blocking part, 315-base part, 316-lock tongue, 317-elastic part, 318-movement shaft, 319-base shell, 320-coil, 321-electromagnet, 322-first via hole, 323-switch bracket, 324-limiting switch, 325-accommodating cavity, 326-clamp spring, 401-installation cavity, 402-nut, 403-second via hole, 404-guide wall, 501-second avoiding portion, 502-third avoiding portion, 503-first avoiding portion, 601-shifting piece, 701-rotating portion and 702-fixing portion.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The utility model provides an electromagnetic lock, and referring to fig. 1 to 3, the electromagnetic lock comprises a lock shell 101, an electromagnet 321, a bolt 316, an elastic piece 317, a lock pin 103 and a lock pin mounting rack 102. The lock shell 101 is mounted on the first mounting part, the electromagnet 321, the bolt 316 and the elastic part 317 are all located inside the lock shell 101, the lock pin mounting frame 102 is mounted on the second mounting part, and the lock pin 103 is detachably connected with the lock pin mounting frame 102. The first and second mounting members are not specifically shown in the drawings, and are referred to herein primarily for illustrative purposes, and the lock case 101 and the pin mounting bracket 102 can be separated from or brought close to each other as the first and second mounting members open and close. In particular, the first mounting may be provided as a door and correspondingly the second mounting as a door frame; or the first installation part is a window, and the second installation part is a window frame; the specific arrangement of the first mounting member and the second mounting member is not enumerated here.

Referring to fig. 1 to 4, the lock case 101 has an installation cavity 401 and an avoidance groove 312, the installation cavity 401 is located inside the lock case 101, the avoidance groove 312 is communicated with the installation cavity 401, the avoidance groove 312 includes a first avoidance portion 503 and a second avoidance portion 501 which are communicated with each other, the first avoidance portion 503 and the second avoidance portion 501 are respectively located at two adjacent sides of the lock case 101, and if fig. 3 is taken as an example, the first avoidance portion 503 is located at the upper side of the lock case, and the second avoidance portion 501 is located at the rear side of the lock case 101. The lock pin 103 can move relative to the lock case 101 along its length direction (which may correspond to the up-down direction of fig. 3) to pass through the first avoiding portion 503 and extend into the installation cavity 401, or to exit from the installation cavity 401 through the first avoiding portion 503. The lock pin 103 can move relative to the lock case 101 in its width direction (which may correspond to the front-back direction of fig. 3, for a cylindrical lock pin 103, the width direction corresponds to a radial direction of the lock pin 103) to enter the installation cavity 401 from the second escape portion 501, or to exit from the installation cavity 401 through the second escape portion 501.

The locking tongue 316 comprises a blocking part 314, and the blocking part 314 is used for blocking the second avoiding part 501; the term "shield" used herein means that the lock pin 103 in the mounting chamber 401 cannot leave the mounting chamber 401 from the second escape portion 501. The electromagnet 321 is connected with the lock shell 101, and the bolt 316 is connected with the electromagnet 321. The electromagnet 321 can be energized to generate a magnetic field, and when the electromagnet 321 is energized, the latch 316 is attracted by the electromagnet 321 and moves towards the direction close to the electromagnet 321, and at this time, the blocking portion 314 does not block the second avoiding portion 501. After the electromagnet 321 is powered off, the magnetic force disappears, and the elastic member 317 drives the latch bolt 316 to reset (return to a position capable of shielding the second avoidance portion 501), so that the latch bolt 316 shields the avoidance groove 312 again. In the present invention, the description of the movement toward the electromagnet 321 or away from the electromagnet 321 is based on the change of the distance between the moving component and the coil 320 of the electromagnet 321.

In order to explain the principle and effect of the electromagnetic lock briefly, the present invention is described in the case that the first installation member is a door and the second installation member is a door frame, which means that the lock case 101 and the pin holder 102 need to be separated from each other, unless otherwise specified.

Referring to fig. 9, when the electromagnet 321 is in the power-off state, the blocking portion 314 blocks part of the avoiding groove 312 (i.e., blocks the second avoiding portion 501), and the latch 103 is inserted into the mounting cavity 401 and located at the position shown in fig. 9, and if the door is to be opened at this time, the mutual blocking between the latch 103 and the latch 316 needs to be released. However, when the lock pin 103 is not withdrawn from the lock pin mounting bracket 102, the blocking portion 314 may abut against the lock pin 103, and prevent the lock case 101 and the lock pin mounting bracket 102 from being separated from each other, thereby maintaining the locked state of the door. Referring to fig. 7, when the electromagnet 321 is in the energized state, the latch bolt 316 moves away, the blocking portion 314 no longer blocks the second avoiding portion 501, and the latch pin 103 cannot be blocked from leaving the mounting cavity 401 from the second avoiding portion 501, so that the door can be easily opened.

When a dangerous situation is met, a user can directly pull the lock pin 103 out of the lock pin mounting frame 102 (namely, the lock pin 103 leaves the mounting cavity 401 from the first avoidance part 503), after the lock pin 103 is pulled out, the constraint between the lock shell 101 and the lock pin mounting frame 102 disappears, the lock shell 101 and the lock pin mounting frame 102 can be easily separated, and the door can be quickly opened; this door opening method does not require a controller for controlling the electromagnet 321, and is not affected by a failure of the electromagnet 321. Namely, in the unlocking in the normal use, the lock pin 103 is separated from the mounting cavity 401 from the second escape portion 501, and in the unlocking in the emergency, the lock pin 103 is separated from the mounting cavity 401 from the first escape portion 503; the utility model respectively arranges the unlocking mode under normal use condition and the unlocking mode under emergency condition by the locking pin 103 leaving the mounting cavity 401 from different positions of the avoiding groove 312. Therefore, the electromagnetic lock provided by the utility model can be unlocked by directly pulling out the lock pin 103 in an emergency, the unlocking mode in the emergency is convenient and quick, the influence of the running condition of the electromagnet 321 is avoided, and the danger avoiding speed or the escape speed of people can be improved.

Referring to FIG. 3, in some embodiments, the lockpin mount 102 includes a first connecting portion 301 and a second connecting portion 302, wherein the second connecting portion 302 is provided in two; the two second connecting portions 302 are respectively connected with two ends of the first connecting portion 301, the end portions of the second connecting portions 302 protrude towards the same side of the first connecting portion 301, the first connecting portion 301 and the two second connecting portions 302 jointly define an accommodating space 304, and the accommodating space 304 is used for accommodating a part of the lock shell 101; the lock pin mounting frame 102 is provided with a mounting hole 303 for the lock pin 103 to pass through, the mounting hole 303 is formed in the second connecting portion 302, and the mounting hole 303 is communicated with the accommodating space 304. In this arrangement, if the door is to be forcibly opened, both of the second connecting portions 302 can restrict the movement of the lock pin 103; the provision of the two second connecting portions 302 can therefore improve the locked state stability of the electromagnetic lock.

Referring to fig. 2 and 3, the first connection portion 301 is connected to the second mounting element, specifically, the first connection portion 301 may be connected to the second mounting element by a bolt, the first connection portion 301 is opened with an adjustment groove 202, the bolt may pass through the adjustment groove 202, and a nut of the bolt and the second mounting element clamp the first connection portion 301 together. The bolt can slide along the adjustment slot 202 to change the mounting position of the lockpin mount 102 (adjustment during installation of the lockpin mount 102, and adjustment when the bolt is not tightened). Electromagnetic lock still includes lock shell mounting bracket 201, and lock shell mounting bracket 201 passes through the bolt to be connected with first installed part, and lock shell 101 then can be fixed through the welded mode with lock shell mounting bracket 201. The electromagnetic lock further comprises two end caps 305, the end caps 305 being connected to the ends of the lock housing 101 to close the mounting cavity 401 and thereby protect the core components of the electromagnetic lock.

In some embodiments, the latch 103 is mounted to the latch mounting bracket 102 by its own weight. Specifically, referring to fig. 1 to 3, two second connection portions 302 are connected to the top end of the first connection portion 301 and the bottom end of the first connection portion 301, respectively; the locking pin 103 includes a shaft portion 311 and a head portion 310, the shaft portion 311 is used for passing through the mounting hole 303 and the accommodating space 304 (and also used for passing through the avoiding groove 312 and entering the mounting cavity 401), and the head portion 310 is connected to the top end of the shaft portion 311. When the lock pin 103 is installed, the rod sequentially penetrates through the two installation holes 303 from top to bottom; the diameter of the head portion 310 is larger than the diameter of the mounting hole 303, and the top surface of the second connecting portion 302 on the upper side abuts against the bottom surface of the head portion 310 to prevent the lock pin 103 from falling under the action of its own weight. The lock pin 103 is installed on the lock pin installation frame 102 by means of its own weight without other fastening parts or connection parts, which is advantageous for improving the operational convenience of withdrawing the lock pin 103, thereby improving the unlocking speed in an emergency.

The lock case 101 may be substantially in the shape of a quadrangular prism, which reduces the difficulty in manufacturing the lock case 101 (for example, the quadrangular prism-shaped lock case 101 may be obtained by machining an aluminum square tube). Referring to fig. 3, the lock case 101 includes a top plate 309, a bottom plate 307 and two side plates 308, the two side plates 308 are disposed at an interval, the top ends of the side plates 308 are connected to the top plate 309, and the bottom ends of the side plates 308 are connected to the bottom plate 307. The top plate 309, the bottom plate 307 and the two side plates 308 enclose a mounting cavity 401. In the case where two second connecting portions 302 of the pin mount 102 are provided, depending on the relative positions of the lock case 101 and the pin mount 102, the escape groove 312 needs to be extended to the bottom plate 307 so that the pin 103 passes through the relatively lower one of the mounting holes 303. Correspondingly, with reference to fig. 3 to 8, the avoidance groove 312 further includes a third avoidance portion 502, the third avoidance portion 502 is disposed on the bottom plate 307, the first avoidance portion 503 is disposed on the top plate 309, the second avoidance portion 501 is disposed on one of the side plates 308, a top end of the second avoidance portion 501 is communicated with the first avoidance portion 503, and a bottom end of the second avoidance portion 501 is communicated with the third avoidance portion 502. More specifically, the rear end of the first avoidance portion 503 is communicated with the top end of the second avoidance portion 501, and the rear end of the third avoidance portion is communicated with the bottom end of the second avoidance portion 501, so that the avoidance groove 312 is in a "C" shape when viewed from the outside of the lock case 101. The lock pin 103 is inserted into the lock pin mounting frame 102 from top to bottom, so that the first avoidance portion 503 allows the rod portion 311 of the lock pin 103 to enter the mounting cavity 401, the third avoidance portion 502 allows the rod portion 311 of the lock pin 103 to pass out of the mounting cavity 401, and the second avoidance portion 501 allows the rod portion 311 to leave the mounting cavity 401 in a normal unlocking manner.

How to open the door by using the electromagnetic lock has been described above, and if the door is to be locked, one way is to energize the electromagnet 321, move the blocking portion 314 away, so that the blocking portion 314 does not block the second avoiding portion 501, then close the door, enter the lock pin 103 into the installation cavity 401 from the second avoiding portion 501, then deenergize the electromagnet 321, reset the lock tongue 316, and block the second avoiding portion 501 blocked by the blocking portion 314.

And in some embodiments, referring to fig. 4, the stop 314 includes a guide wall 404, the guide wall 404 being disposed obliquely, the guide wall 404 being for contacting the detent 103. Referring to fig. 3 and 4, the electromagnet 321 includes a moving shaft 318, one end of the moving shaft 318 is connected to the latch bolt 316, and the moving shaft 318 moves along its center line; the guide wall 404 is disposed obliquely away from the center line of the moving shaft 318, and the distance between the guide wall 404 and the center line of the moving shaft 318 gradually decreases in the moving direction of the latch 316 away from the electromagnet 321. This arrangement is provided to eliminate the need to energize the electromagnet 321 when locking the door, and to improve the ease of the door locking process. In this arrangement, if the door is to be locked, the electromagnet 321 does not need to be energized, the lock case 101 is close to the accommodating space 304 in a state where the bolt 316 blocks the second escape portion 501, and correspondingly, the lock pin 103 needs to move from back to front relative to the lock case 101 and enter the installation cavity 401 with reference to the direction of fig. 4; after the lock pin 103 contacts the guide wall 404, due to the inclined arrangement of the guide wall 404, the acting force applied by the lock pin 103 to the guide wall 404 has a component force along the direction of the center line of the moving shaft 318, and the component force drives the lock tongue 316 to move towards the direction close to the electromagnet 321, so as the lock pin 103 enters the installation cavity 401 from the second avoiding portion 501, the lock tongue 316 moves towards the direction close to the electromagnet 321 and gradually releases the shielding of the second avoiding portion 501, and then the lock pin 103 completely enters the installation cavity 401. The "inclined arrangement" of the guide wall 404 does not strictly limit the guide wall 404 to a plane in which the guide wall 404 is inclined, but the guide wall 404 may be provided as a curved surface, and the "inclination" is determined based on whether or not a line connecting both ends of the guide wall 404 (the line being a straight line) is inclined with respect to the center line of the movement shaft 318.

In some embodiments, the electromagnetic lock further has a key opening and closing function, so as to increase an unlocking mode when the electromagnet 321 is disabled, and improve the flexibility of the electromagnetic lock. Specifically, referring to fig. 3 to 9, the electromagnetic lock further includes a lock cylinder 104, the lock cylinder 104 includes a fixed portion 702, a rotating portion 701 and a shifting piece 601, the fixed portion 702 is connected with the lock shell 101, the rotating portion 701 is connected inside the fixed portion 702, the rotating portion 701 is provided with a lock hole 105, the shifting piece 601 is connected with one end of the rotating portion 701, and the shifting piece 601 is located in the installation cavity 401; the lock tongue 316 further comprises a butting part 313, the plectrum 601 butts against the butting part 313, and the lock hole 105 is used for inserting a key; after the key is inserted, the rotating part 701 and the shifting piece 601 can rotate along with the rotation of the key, and the shifting piece 601 rotates to drive the lock tongue 316 to move. Referring to fig. 6 and 8, based on the state of fig. 8, the unlocking can be realized by clockwise rotation of the paddle 601. The electromagnetic lock further comprises a snap spring 326, and the fixing portion 702 is connected with the lock shell 101 through the snap spring 326.

In the case where the lock cylinder 104 is provided, it is to avoid the lock cylinder 104 from being loosened or damaged by the lock tongue 316 striking the lock cylinder 104 when it is reset. Referring to fig. 3, 7 and 9, in some embodiments, the electromagnetic lock further includes a limit stop 306. The retainer 306 is connected to the lock case 101, one end of the retainer 306 protrudes into the mounting cavity 401, and the retainer 306 is used for abutting against the bolt 316 to prevent the bolt 316 from moving toward the fixing portion 702. The position limiter 306 may be configured as a screw to reduce the cost of the electromagnetic device.

The latch bolt 316 includes a base 315, a blocking portion 314, and a supporting portion 313, where the blocking portion 314 and the supporting portion 313 are both connected to the base 315, and the base 315 is used for supporting the limiting member 306, because the blocking portion 314 needs to be matched with the lock pin 103, and the supporting portion 313 needs to be matched with the dial 601, the limiting member 306 is not suitable for directly supporting the blocking portion 314 or the supporting portion 313, otherwise the opening and closing function of the electromagnetic lock is easily affected. In addition, the base 315 of the latch bolt 316 is also used for connecting the moving shaft 318, and referring to fig. 3 and 4, the base 315 and the moving shaft 318 are connected through a nut 402, and the nut 402 and a shaft shoulder of the moving shaft 318 jointly clamp the base 315.

Referring to fig. 3, the electromagnet 321 includes a base 319, a coil 320 and a moving shaft 318, the base 319 is connected to the lock case 101, the base 319 is located in the installation cavity 401, the base 319 has an accommodating cavity 325, one end of the base 319 is provided with a first through hole 322, the first through hole 322 is communicated with an inner cavity of the base 319, and the moving shaft 318 passes through the first through hole 322 and enters the accommodating cavity 325; the coil 320 is disposed in the receiving chamber 325, the coil 320 can be energized to generate a magnetic field, and the moving shaft 318 is disposed through the center of the coil 320 (the drawing for illustrating the internal structure of the electromagnetic lock in the drawing does not particularly distinguish between the base 319 and the coil 320). The electromagnet 321 with the arrangement mode has a small size, and the structural compactness of the electromagnetic lock is improved. Referring to fig. 4, in some embodiments, the elastic member 317 is provided as a spring, and the elastic member 317 is sleeved outside the moving shaft 318; generally speaking, for the reliability of the lock, the electromagnetic lock should be in a locked state when in a power-off state, and therefore, two ends of the elastic member 317 respectively abut against the base 319 and the base 315 of the bolt 316. It should be noted that, in the power-off state, the position-limiting member 306 will abut against the base 315 of the latch bolt 316, and at this time, the elastic member 317 is still in the compressed state, and the elastic member 317 still applies an acting force to the latch bolt 316 to push the latch bolt 316 away from the base 319; the two-directional acting force applied to the latch bolt 316 (the force applied by the stopper 306 and the force applied by the elastic member 317) can ensure the positional stability of the latch bolt 316 and ensure the shielding effect on the second avoiding portion 501.

Referring to fig. 4, in some embodiments, a second through hole 403 is formed at an end of the base 319 far from the first through hole 322, the second through hole 403 is communicated with the inner cavity of the base 319, and the second through hole 403 is used for the movement shaft 318 to pass through; referring to fig. 3 and 5, the electromagnetic lock further includes a limit switch 324, the limit switch 324 is connected to one end of the base 319, at which the second through hole 403 is opened, and the limit switch 324 is used for detecting the position of the moving shaft 318. Referring to fig. 3 and 5, the electromagnetic lock further includes a switch bracket 323, the switch bracket 323 is connected to the base 319, and the limit switch 324 is mounted on the switch bracket 323. The limit switch 324 may be configured as a photoelectric switch, a touch switch, etc., and the limit switch 324 in the present invention is configured as a touch switch; the limit switch 324 is provided to detect the position of the moving shaft 318 so as to realize the function of energizing the electromagnet 321 at a fixed time, thereby realizing the function of automatically locking after unlocking for a certain time. After the electromagnet 321 is powered on, the moving shaft 318 moves, when the end of the moving shaft 318 touches the limit switch 324, a control circuit board (not shown) of the electromagnetic lock starts to time, and after a certain time, the control circuit board is powered off to the electromagnet 321, and the electromagnetic lock is locked again. In addition, the position of the moving shaft 318 detected by the limit switch 324 can be used to monitor whether the electromagnetic lock is working normally (for example, if the limit switch 324 fails to touch the moving shaft 318 after the electromagnet 321 is powered on for a period of time, the moving shaft 318 fails to move to the preset position, and it can be determined that the electromagnetic lock is out of order).

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims (10)

1. An electromagnetic lock for locking between a first mount and a second mount, comprising:

the lock shell is used for being connected with the first installation part, the lock shell is provided with an installation cavity and an avoiding groove, the avoiding groove is communicated with the installation cavity, the avoiding groove comprises a first avoiding part and a second avoiding part which are communicated with each other, and the first avoiding part and the second avoiding part are respectively positioned on two adjacent sides of the lock shell;

a lock pin mounting bracket for connection with the second mounting member;

the lock pin is detachably connected with the lock pin mounting frame, the lock pin can move relative to the lock shell along the length direction of the lock pin to enter and exit the mounting cavity from the first avoidance part, and the lock pin can move relative to the lock shell along the width direction of the lock pin to enter and exit the mounting cavity from the second avoidance groove;

the lock bolt comprises a blocking part, the blocking part can block the second avoiding part, and the blocking part can abut against the lock pin to block the lock pin from leaving the mounting cavity from the second avoiding part;

the electromagnet is connected with the lock shell, arranged in the installation cavity, connected with the bolt, and used for driving the bolt to move towards the direction close to the electromagnet so as to remove the shielding of the blocking part on the second avoiding part;

the elastic piece is arranged in the installation cavity and used for driving the lock tongue to reset.

2. The electromagnetic lock of claim 1, wherein the pin mount comprises:

the first connecting part is used for being connected with the second mounting part;

the two second connecting portions are respectively connected with two ends of the first connecting portion, the two second connecting portions protrude towards the same side of the first connecting portion, an accommodating space is defined by the first connecting portion and the two second connecting portions together, the accommodating space is used for accommodating one part of the lock shell, mounting holes are formed in the second connecting portions, the mounting holes are used for the lock pins to penetrate through, and the mounting holes are communicated with the accommodating space.

3. An electromagnetic lock according to claim 2, wherein two of said second connecting portions are connected to a top end of said first connecting portion and a bottom end of said first connecting portion, respectively, said lock pin comprising:

the rod part is used for penetrating through the mounting hole and the accommodating space;

a head connected to the top end of the rod;

the second connecting part positioned at the top end of the first connecting part is abutted against the bottom surface of the head part to prevent the lock pin from falling off.

4. An electromagnetic lock according to claim 3, wherein the avoiding groove further comprises a third avoiding portion, the third avoiding portion and the first avoiding portion are respectively communicated with two ends of the second avoiding portion, and the lock case comprises:

the first avoiding part is arranged on the top plate;

the third avoidance part is arranged on the bottom plate;

the two side plates are arranged at intervals, and the second avoidance part is arranged on one side plate;

the top end of each side plate is connected with the top plate, the bottom end of each side plate is connected with the bottom plate, and the top plate, the bottom plate and the two side plates are arranged in an enclosing mode to form the installation cavity.

5. The electromagnetic lock of any one of claims 1 to 4, wherein the bolt further comprises a retaining portion, the electromagnetic lock further comprises a lock cylinder, the lock cylinder comprising:

the fixing part is connected with the lock shell;

the rotating part is connected to the inside of the fixing part and provided with a lock hole for a key to insert;

the shifting piece is connected with one end of the rotating part, is positioned in the mounting cavity and abuts against the abutting part;

the rotating part and the plectrum can rotate along with the rotation of the key, and the plectrum rotates to enable the lock tongue to move.

6. The electromagnetic lock of claim 5, further comprising a limiting member, wherein the limiting member is connected to the lock case, one end of the limiting member protrudes into the installation cavity, and the limiting member is configured to abut against the lock tongue to block the lock tongue from moving toward the fixing portion.

7. An electromagnetic lock according to claim 1, wherein the electromagnet comprises:

the moving shaft, one end of the said moving shaft is connected with said lock tongue;

the base is connected with the lock shell, the base is located in the installation cavity, the base is provided with an accommodating cavity, one end of the base is provided with a first through hole, the first through hole is communicated with the accommodating cavity, and the first through hole is used for the movement shaft to pass through and enter the accommodating cavity;

the coil is arranged in the accommodating cavity and can be electrified to generate a magnetic field, and the moving shaft penetrates through the center of the coil.

8. An electromagnetic lock according to claim 7, wherein the blocking portion comprises a guide wall for contacting the locking pin, the movement axis moving along its centerline, the guide wall facing away from the centerline of the movement axis, the guide wall being progressively less distant from the centerline of the movement axis in a direction of movement of the locking bolt away from the electromagnet.

9. The electromagnetic lock of claim 7, wherein a second through hole is opened at an end of the base away from the first through hole, the second through hole is communicated with the accommodating cavity, and the second through hole is used for the movement shaft to pass through; the electromagnetic lock further comprises a limit switch, the limit switch is connected to one end, provided with the second via hole, of the base, and the limit switch is used for detecting the position of the moving shaft.

10. The electromagnetic lock of claim 7, wherein the elastic member is configured as a spring, the elastic member is sleeved outside the moving shaft, one end of the elastic member abuts against the base, and the other end of the elastic member abuts against the lock tongue.

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