CN112227835A

CN112227835A - Closing buffer mechanism of electromagnetic lock

Info

Publication number: CN112227835A
Application number: CN202011110604.3A
Authority: CN
Inventors: 刘子春
Original assignee: Individual
Current assignee: Tao Xuemei
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-01-15
Anticipated expiration: 2040-10-16
Also published as: CN112227835B

Abstract

The invention relates to the technical field of security and protection, and discloses a closing buffer mechanism of an electromagnetic lock, which comprises a door seat, wherein one side of the door seat is movably connected with a door plate, the other side of the door seat is fixedly connected with a limiting seat, the middle part of the limiting seat is fixedly provided with a lock body, the middle part of one end of the door plate is fixedly provided with an iron plate which is positioned at the middle part of a movable groove and corresponds to the lock body, and one end of the inner cavity of the door plate is fixedly provided with an iron rod. According to the invention, the auxiliary door opening mechanism is arranged, so that after the lock body is powered off, because the lock body weakens with the attraction force between the iron plates, the door plate can be driven by the iron plates to automatically open through mutual exclusion between the fixed magnetic blocks and the first movable magnetic blocks and mutual exclusion between the right end of the iron rod and the fixed magnetic blocks, the problem that the door plate is not easy to open due to the fact that the iron plates are magnetized because the contact time between the electrified lock body and the iron plates is long is avoided, and the iron plates are still adsorbed with the lock body after the lock body is powered off, and the door plate opening efficiency is improved.

Description

Closing buffer mechanism of electromagnetic lock

Technical Field

The invention relates to the technical field of security protection, in particular to a closing buffer mechanism of an electromagnetic lock.

Background

The design of electromagnetic lock (or called magnetic lock) is the same with the electro-magnet, utilizes the principle of electromagnetism, and when the electric current passed through the silicon steel sheet, the electromagnetic lock can produce powerful suction and tightly holds the effect that adsorbs iron plate and reach the lock door, as long as little electric current electromagnetic lock will produce magnetic force big enough, cuts off the power supply promptly after the access control system discernment personnel of control electromagnetic lock power is correct, and the electromagnetic lock loses suction and can open the door.

The electromagnetic lock is usually arranged in a district or a place where only designated personnel can enter, the electromagnetic lock is powered off and the access control system is automatically opened by swiping a card, fingerprints or human face recognition, when the electromagnetic lock is normally used, an iron plate on one side of a door plate can collide with a lock body due to inertia force and magnetic force adsorption, so that loud sound and vibration are generated, a rubber pad is added for buffering, but the iron plate and the lock body still collide to influence the normal service life of equipment, the rubber pad has the problems of vibration falling, corrosion and the like, so that the problem that the door of the electromagnetic lock still can be closed and generate noise after the electromagnetic lock is used for a long time is generated, the normal work and rest of people are influenced, and after the iron plate on one side of the door plate is in contact with the electrified electromagnetic lock for a long time, the iron plate can be magnetized, so that after the power of the electromagnetic lock is off, a certain thrust is still required to be applied to, is not beneficial to the normal use of the electromagnetic lock.

Disclosure of Invention

Aiming at the defects of the existing electromagnetic lock in the use process in the background technology, the invention provides a closing buffer mechanism of the electromagnetic lock, which has the advantages of closing buffer and auxiliary door opening and solves the technical problems in the background technology.

The invention provides the following technical scheme: a closing buffer mechanism of an electromagnetic lock comprises a door seat, a door plate is movably connected with one side of the door seat, the other side of the door seat is fixedly connected with a limiting seat, the middle part of the limiting seat is fixedly provided with a lock body, an iron plate corresponding to the lock body in the middle of the movable groove is fixedly arranged in the middle of one end of the door plate, an iron rod is fixedly arranged at one end of the inner cavity of the door panel, an electrified coil positioned on the outer surface of the iron rod is fixedly arranged at one end of the inner cavity of the door panel, and one side of the electrified coil is provided with a long groove for exposing the wire core, the magnetic pole at the right end of the iron rod is the same as the magnetic pole at the outer side of the lock body, one end of the inner cavity of the door plate is movably sleeved with a conductive plate, and one side of current conducting plate and the inside sinle silk swing joint of circular telegram coil, the inner chamber activity of the one end of current conducting plate through spring and door plant is cup jointed, the movable groove that supplies the current conducting plate to remove is seted up to the inner chamber of door plant one end.

Preferably, the middle part of the lock body is fixedly provided with a fixed magnetic block, the middle part of the inner cavity of the iron plate is movably sleeved with a first movable magnetic block, and the magnetic pole at the outer end of the fixed magnetic block is the same as the magnetic pole at the outer end of the first movable magnetic block.

Preferably, the inner cavity of the iron plate is fixedly connected with a second movable magnetic block located between the right end of the iron rod and the first movable magnetic block, the magnetic pole at the outer end of the second movable magnetic block is the same as the magnetic pole at the inner end of the first movable magnetic block, and the magnetic pole at the inner end of the second movable magnetic block is the same as the magnetic pole at the right end of the iron rod.

The invention has the following beneficial effects:

1. according to the electromagnetic lock, the closing buffer mechanism is arranged, so that when the door plate is closed, the current conducting plate moves for a certain distance along the movable groove under the action of centrifugal force, the distance for the current conducting plate to move is different according to the force when the door plate is closed, the lengths of wire cores contacted with the current conducting plate are different, the number of turns of the circular current coil on the surface of the iron rod is different, the magnetic force generated by the iron rod under the action of the current coil is increased, a certain repulsion force is generated between the magnetic pole at the right end of the iron rod and the magnetic pole of the lock body through the same magnetic pole, the inertia force generated when the door plate rotates and the suction force of the lock body to the iron plate are overcome through the repulsion force, the force generated when the door plate rotates is weakened, the final lock body is contacted with the iron plate.

2. According to the invention, the auxiliary door opening mechanism is arranged, so that after the lock body is powered off, because the lock body weakens with the attraction force between the iron plates, the door plate can be driven by the iron plates to automatically open through mutual exclusion between the fixed magnetic blocks and the first movable magnetic blocks and mutual exclusion between the right end of the iron rod and the fixed magnetic blocks, the problem that the door plate is not easy to open due to the fact that the iron plates are magnetized because the contact time between the electrified lock body and the iron plates is long is avoided, and the iron plates are still adsorbed with the lock body after the lock body is powered off, and the door plate opening efficiency is improved.

3. According to the invention, the second movable magnetic block positioned between the right end of the iron rod and the first movable magnetic block is additionally arranged in the middle of the iron plate, so that when the door plate is closed, buffering can be carried out through magnetic repulsion between the first movable magnetic block and the second movable magnetic block and magnetic repulsion between the second movable magnetic block and the right end of the iron rod, the iron plate can be further buffered when contacting the lock body, the impact between the door plate and the limiting seat is further reduced, and the noise generated by the impact between the door plate and the limiting seat is further reduced.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic diagram of an electrical coil of the present invention;

FIG. 3 is a schematic cross-sectional view of a structural iron plate according to the present invention;

FIG. 4 is an enlarged view of the point A in FIG. 1.

In the figure: 1. a door seat; 2. a door panel; 3. a lock body; 4. a fixed magnetic block; 5. an iron plate; 6. a second movable magnetic block; 7. a first movable magnetic block; 8. an iron rod; 9. an electrified coil; 10. a conductive plate; 11. a spring; 12. a movable groove; 13. a limiting seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a closing buffer mechanism of an electromagnetic lock comprises a door base 1, a door plate 2 is movably connected to one side of the door base 1, a limiting base 13 is fixedly connected to the other side of the door base 1, a lock body 3 is fixedly installed in the middle of the limiting base 13, an iron plate 5 corresponding to the lock body 3 in the middle of a movable groove 12 is fixedly installed in the middle of one end of the door plate 2, an iron rod 8 is fixedly installed at one end of an inner cavity of the door plate 2, an energizing coil 9 located on the outer surface of the iron rod 8 is fixedly installed at one end of the door plate 2, an elongated groove for exposing a wire core is formed in one side of the energizing coil 9, a magnetic pole at the right end of the iron rod 8 is identical to a magnetic pole outside the lock body 3, a conductive plate 10 is movably sleeved at one end of the inner cavity of the door plate 2, one side of the conductive plate, the inner cavity of one end of the door panel 2 is provided with a movable groove 12 for the conductive plate 10 to move, when the door control system provided with the electromagnetic lock is closed, the door panel 2 rotates to enable the iron plate 5 to approach the lock body 3 and to be finally attracted, the conductive plate 10 moves in the movable groove 12 by the action of centrifugal force during rotation, and the position of one side of the conductive plate 10, which is in contact with the core of the energizing coil 9, is changed, so that the number of the energizing turns of the energizing coil 9 surrounding the outer surface of the iron rod 8 is increased, because the magnetic force generated by the iron rod 8 under the action of the energizing coil 9 is related to the number of the energizing turns of the coil surrounding the outer surface of the iron rod, when the rotating speed of the door panel 2 is faster, the moving distance of the conductive plate 10 is longer under the action of the centrifugal force, thereby the number of the energizing turns of the energizing coil 9 surrounding the iron rod, and the right end of the iron rod 8 and the magnetic pole on the outer surface of the lock body 3 are the same, so that the magnetic repulsion force generated between the iron rod 8 and the lock body 3 can properly weaken the inertia force of the door plate 2 and the suction force of the lock body 3 to the iron plate 2, the rotating speed of the door plate 2 is reduced, and the vibration and the emitted noise generated when the lock body 3 is in contact with the iron plate 5 are reduced.

Wherein, the middle part fixed mounting of lock body 3 has fixed magnetic path 4, the middle part activity of 5 inner chambers of iron plate has cup jointed first moving magnetic path 7, and fixed magnetic path 4 outer end magnetic pole is the same with first moving magnetic path 7 outer end magnetic pole, make through the card swiping, fingerprint or face identification, make 3 outage backs of lock body, because iron plate 5 contacts with lock body 3 and various magnetic paths that have magnetism for a long time, lead to iron plate 5 to be magnetized, make iron plate 5 still can adsorb together with lock body 3 after the outage, influence door plant 2's the efficiency of opening the door, then through fixed magnetic path 4 outer end and the same effect of first moving magnetic path 7 outer end magnetic pole this moment, make produce certain repulsion between the two, make door plant 2 separate with spacing seat 13 under the effect of repulsion, thereby ensured door plant 2 efficiency of opening the door after accomplishing authentication.

The inner cavity of the iron plate 5 is fixedly connected with a second movable magnetic block 6 positioned between the right end of the iron rod 8 and the first movable magnetic block 7, the magnetic pole at the outer end of the second movable magnetic block 6 is the same as the magnetic pole at the inner end of the first movable magnetic block 7, and the magnetic pole at the inner end of the second movable magnetic block 6 is the same as the magnetic pole at the right end of the iron rod 8, when the door plate 2 is opened, the inner end of the second movable magnetic block 6 has the same function as the magnetic pole at the outer end of the first movable magnetic block 7, so that a certain gap can be generated among the three, when the door is closed, the lock body 3 is about to be in contact with the iron plate 5, the gap generated by magnetic repulsion.

The using method of the invention is as follows: when the iron rod is in an initial state, a wire core at one side in the electrified coil 9 is in contact with the conductive plate, and under the action of the conductive plate 10, current preferentially flows through the conductive plate 10 with small resistance, so that the electrified coil 9 only passes through a plurality of turns of coils which are not in contact with the conductive plate 10 to enable the iron rod 8 to generate weak magnetism;

when closed: when the door plate 2 is automatically or manually closed, the compression spring 11 of the conductive plate 10 moves along the movable groove 12 through the centrifugal force generated when the door plate 2 rotates, the position of a wire core in the electrified coil 9 contacted with one side of the conductive plate 10 is changed, so that the number of turns of the electrified part of the electrified coil 9 surrounded by the outer surface of the iron rod 8 is increased, the iron rod 8 generates magnetic force with relative strength under the action of different electrified turns of the electrified coil 9, and a certain repulsion force is generated between the magnetic pole at the outer end of the lock body 3 and the magnetic pole at the right end of the iron rod 8 because the magnetic pole at the outer end of the lock body 3 is the same as the magnetic pole at the right end of the iron rod 8, so that the door plate can overcome the suction force of the lock body 3 to the iron plate 5 and the inertia force generated when the door plate 2 rotates, thereby the rotating speed of the door plate 2 is slowly reduced, and when the door plate 2, the repulsion force generated by the same magnetic poles between the first movable magnetic block 7 and the lock body 3 and between the second movable magnetic block 6 and the first movable magnetic block 7 further reduces the power generated when the iron plate 5 rotates, and simultaneously weakens the attraction of the lock body 3 to the iron plate 5, so that the power between the door plate 2 and the limiting seat 13 is greatly weakened when the door plate 2 and the limiting seat 13 are closed under the action of the iron plate 5 and the lock body 3, thereby reducing the vibration and the noise generated by the collision of the two;

when open: after the fingerprint, card swiping or face recognition is completed by the lock body 3, the lock body 3 is automatically powered off, under the mutual exclusion effect between the fixed magnetic block 4, the first movable magnetic block 7, the second movable magnetic block 6 and the first movable magnetic block 7, the first movable magnetic block 7 stretches out vertically, meanwhile, the door plate 2 overcomes the defect that the contact time of the iron plate 5 and the power-on lock body 3 is long, so that the attraction force generated between the iron plate 5 and the power-off lock body 3 is generated, and the door plate 2 is opened.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a closed buffer gear of electromagnetic lock, includes door seat (1), one side swing joint of door seat (1) has door plant (2), spacing seat (13) of opposite side fixedly connected with of door seat (1), the middle part fixed mounting of spacing seat (13) has lock body (3), its characterized in that: the middle part of one end of the door plate (2) is fixedly provided with an iron plate (5) which is positioned at the middle part of the movable groove (12) corresponding to the lock body (3), an iron rod (8) is fixedly arranged at one end of the inner cavity of the door plate (2), an electrified coil (9) positioned on the outer surface of the iron rod (8) is fixedly arranged at one end of the inner cavity of the door plate (2), one side of the electrified coil (9) is provided with a long groove for exposing the wire core, the magnetic pole at the right end of the iron rod (8) is the same as the magnetic pole at the outer side of the lock body (3), one end of the inner cavity of the door plate (2) is movably sleeved with a conductive plate (10), one side of the conductive plate (10) is movably connected with the inner wire core of the electrified coil (9), one end of the conductive plate (10) is movably sleeved with the inner cavity of the door panel (2) through a spring (11), the inner cavity of one end of the door plate (2) is provided with a movable groove (12) for the conductive plate (10) to move.

2. A closing damper mechanism of an electromagnetic lock according to claim 1, wherein: the middle part of the lock body (3) is fixedly provided with a fixed magnetic block (4), the middle part of the inner cavity of the iron plate (5) is movably sleeved with a first movable magnetic block (7), and the magnetic pole at the outer end of the fixed magnetic block (4) is the same as the magnetic pole at the outer end of the first movable magnetic block (7).

3. A closing damper mechanism of an electromagnetic lock according to claim 2, wherein: the inner cavity of the iron plate (5) is fixedly connected with a second movable magnetic block (6) which is positioned between the right end of the iron rod (8) and the first movable magnetic block (7), the magnetic pole at the outer end of the second movable magnetic block (6) is the same as the magnetic pole at the inner end of the first movable magnetic block (7), and the magnetic pole at the inner end of the second movable magnetic block (6) is the same as the magnetic pole at the right end of the iron rod (8).