CN218759301U - Electromagnetic lock - Google Patents

Abstract

The utility model relates to a lock field that has special construction indicates an electromagnetic lock especially, has set up the portion of pulling on release mechanism, and the portion of pulling is outside extending to the shell, and therefore, when the outside under the power-off state, still kept the mode of a mechanical type unblock, behind the pulling portion, release mechanism rather than linking to each other has received the same and has pulled, makes it trigger the unblock process.

Description

Electromagnetic lock

Technical Field

The utility model relates to a lock field that has special construction indicates an electromagnetic lock especially.

Background

The electromagnetic lock is a large-key-size high-reliability full-mechanical coded lock without electronic devices.

Patent document 1 describes an electromagnetic lock having a structure that can realize unlocking and locking, can accurately feed back the on/off state of the electromagnetic lock, and has high detection sensitivity and reliable accuracy.

When the electromagnetic lock is applied to various situations such as take-out cabinets, doors and the like, a new problem is faced, and under the condition of power failure, the electromagnetic lock cannot be opened, so that the closed objects cannot be taken out, or the people inside cannot come out.

Patent document 1 is a utility model patent application document of application No. 2022222316177.

Disclosure of Invention

In order to solve the problem, the utility model provides an electromagnetic lock for solve the electromagnetic lock under the condition of not electrified, the unable condition of being opened of lock.

In order to achieve the above object, the utility model adopts the following technical scheme: the electromagnetic lock is clamped and fixed with a lock hasp, the electromagnetic lock is provided with a shell with a bayonet, the lock hasp can enter or exit from the bayonet on the shell, a lock shaft is arranged on a part, corresponding to the bayonet, of the lock hasp, and the lock shaft can be limited in the bayonet.

The beneficial effects of the utility model reside in that:

the traction part is arranged on the unlocking mechanism and extends out of the shell, so that a mechanical unlocking mode is still kept when the outside is in a power-off state, and after the traction part is pulled, the unlocking mechanism connected with the traction part is subjected to the same traction, so that the unlocking mechanism can trigger an unlocking process.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an internal structure view of the present invention.

Fig. 3 is a view showing the structure after the lock buckle is hidden.

Fig. 4 is a perspective view of the latch.

The reference numbers illustrate: 1-a housing; 2-locking the hasp; 3-bayonet; 4-locking the shaft; 5, locking and buckling; 6, locking the opening;

7-a first torsion spring; 71-a first end; 72-a second end; 8-a limiting part; 81-arc surface; 9-a protrusion;

91-a raised area; 10-a microswitch; 11-a connecting rod; 12-a second torsion spring; 13. The following examples of the present invention food made of glutinous rice flour a bumping post;

14-an electromagnet; 15-barrier sheet; 16-a spring; 17-an iron core; 18-a via hole; 19-traction part.

Detailed Description

Fig. 1 is a perspective view of an electromagnetic lock, and fig. 2 shows an internal structure view of the electromagnetic lock. In fig. 1 and fig. 2 and fig. 3, the outer part of the electromagnetic lock is composed of a housing 1, in this embodiment, a lock hasp 2 is fixed on a movable door, the lock hasp 2 is selectively moved into or out of a bayonet 3 on the housing 1 along with the movement of the movable door, a lock shaft 4 is arranged on the lock hasp 2 corresponding to the bayonet 3, and the lock shaft 4 can be limited in the bayonet 3.

The bayonet 3 is distributed on a group of side casings forming the shell 1, the movable door is turned up and down, and the locking shaft 4 is positioned and locked by the locking notch 6 in the bayonet 3 after being turned in the bayonet 3.

Be provided with hasp 5 in the shell 1 on being close to bayonet socket 3's the region, fore shaft 6 is located the end of hasp 5, and at the pivoted in-process, the part of constituteing fore shaft 6 can screw in bayonet socket 3 to under the condition that fore shaft 6 corresponds with lock axle 4, the both sides of fore shaft 6 restrict lock axle 4 in bayonet socket 3, above be the closure state of electromagnetic lock.

In the housing 1, there is a limiting structure for positioning the lock catch 5 after the lock notch 6 enters the bayonet 3, the limiting structure includes a first torsion spring 7 and a limiting portion 8, the first torsion spring 7 is sleeved at the rotating shaft of the lock catch 5, the first end 71 of the first torsion spring 7 is located in the bayonet 3, the second end 72 of the first torsion spring 7 is connected with the lock catch 5, in a natural state, the first torsion spring 7 is close to the first side of the lock catch 5, during the locking process, the lock shaft 4 will gradually enter the lock notch 6 and press the first end 71 of the first torsion spring 7, the second end 72 of the first torsion spring 7 changes in shape along with the deformation of the first end 71, the position relationship caused by the change of the second end 72 will pull the lock catch 5 to make a corresponding rotation, in this rotation trend, the head of the lock catch 5 is in close contact with the limiting portion 8, this positioning manner is advantageous in that the response time slot generated by the first torsion spring 7 in cooperation with the lock catch 5 is consistent, thereby controlling the rotation stroke of the lock catch 5 within a shorter range, which is beneficial to improve the utilization rate of the internal space of the housing 1.

As shown in fig. 4, the latch 5 is provided with a protrusion 9 on one side, the protrusion 9 is close to the rotating shaft of the latch 5, after the first torsion spring 7 is installed on the rotating shaft, the second end 72 of the first torsion spring 7 will abut against the first side of the protrusion 9, and the second end 72 contacts with a partial area of the protrusion 9 to form a non-contact area with an acute angle, which can ensure that the second end 72 cannot be disengaged from the tangential direction in which it can rotate even under its own large stress.

Still be equipped with micro-gap switch 10 in the shell 1 for the open and shut state of current electromagnetic lock of record, this micro-gap switch 10 is close to protruding portion 9, protruding portion 9 corresponds micro-gap switch 10 and is equipped with protruding region 91, when the closure state, micro-gap switch 10 can be pressed to protruding region 91, when the unblock state, protruding region 91 can follow up 5 clockwise rotations of hasp and withdraw from micro-gap switch 10, it is required to explain, the trigger switch piece on micro-gap switch 10 is open in usual, the switch piece that starts under the open in usual state is the inclined plane.

The unlocking mechanism is a connecting rod 11, the limiting part 8 is connected with the connecting rod 11, the connecting rod 11 is arranged on the area, far away from the lock catch 5, in the shell 1, a second torsion spring 12 is sleeved on a rotating shaft of the connecting rod 11, the connecting rod 11 has a tendency of rotating towards the lock catch 5 under the action of the second torsion spring 12, and the limiting part 8 is arranged on one side, close to the lock catch 5, of the connecting rod 11; the design is mainly that the second torsion spring 12 has better space occupancy rate, and can not occupy more space and influence the assembly of other parts.

The connecting rod 11 is provided with an arc-shaped surface 81 in the area adjacent to the limiting part 8, and the head of the connecting rod 11 rotates along the guide of the arc-shaped surface 81 in the unlocking and locking processes, so that the rotating speed of the lock catch 5 is slowed down by using dynamic friction, and the phenomenon that the rotating shaft of the lock catch 5 is subjected to large stress due to too fast sudden rotation is prevented.

The shell 1 is internally provided with a blocking column 13 for blocking the connecting rod 11 from transitionally rotating, under the action of the blocking column 13, the head of the lock catch 5 is prevented from transitively penetrating into the limiting part 8, the limiting part 8 is a step on the connecting rod 11, and the head of the lock catch 5 is beneficial to exit from the limiting part 8 in effective length due to the linkage relation between the lock catch 5 and the arc-shaped surface 81.

The utility model discloses an electromagnetic lock includes two kinds of situations of manual unblock and electronic unblock, contains electro-magnet 14 in the shell 1, and iron core 17 in the electro-magnet 14 corresponds with connecting rod 11, and in the circular telegram state, iron core 17 can promote toward connecting rod 11, makes connecting rod 11 anticlockwise movement to hasp 5 breaks away from spacing portion 8;

manual unblock is equipped with through-hole 18 for shell 1, and through-hole 18 is corresponding connecting rod 11, has the traction portion 19 of following through-hole 18 and wearing out on the connecting rod 11, through pulling traction portion 19, also can make connecting rod 11 anticlockwise rotate, and such advantage lies in, prevents under the outage state that the dodge gate can't open.

The traction part 19 can be tied with tools such as a rope, and the like, so that the device is convenient to pull remotely.

Because the shell 1 can be made of metal material, a blocking piece 15 made of plastic material is arranged in one surface of the interior of the shell 1 close to the iron core 17, and the blocking piece 15 can block a magnetic field in a power-on state, so that the formed electromagnet 14 is prevented from being attracted by the shell 1 to influence the propulsion of the connecting rod 11.

The iron core 17 is connected with the spring 16 in one end corresponding to the blocking piece 15, the other end of the spring 16 is arranged on the outer side of the electromagnet 14, when the electromagnet is electrified, the iron core 17 is compressed by the pushing of the iron core 17, and when the electromagnet is not electrified, the iron core 17 is pushed to reset by the resetting of the spring 16.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims (10)

1. The electromagnetic lock is clamped and fixed with a lock hasp, the electromagnetic lock is provided with a shell with a bayonet, the lock hasp can enter or exit from the bayonet on the shell, a lock shaft is arranged on a part, corresponding to the bayonet, of the lock hasp, and the lock shaft can be limited in the bayonet.

2. An electromagnetic lock according to claim 1 wherein the release mechanism is rotated anticlockwise outwards on pulling of the pull means.

3. An electromagnetic lock according to claim 1 or 2, wherein the housing is provided with a locking catch in a region adjacent the bayonet, the locking catch being adapted to be rotated by the release mechanism to screw into the bayonet to retain the lock shaft in the bayonet.

4. An electromagnetic lock according to claim 3 wherein the shackle is rotated in the opposite direction in response to rotation of the release mechanism.

5. An electromagnetic lock according to claim 4 wherein the housing has a first torsion spring and a limiting portion, the first torsion spring having one end located within the latch and the other end connected to the latch, the lock shaft extending progressively into the latch pressing against the one end of the first torsion spring such that the latch rotates as the lock shaft extends further, the limiting portion being located within the range of the latch.

6. An electromagnetic lock as claimed in claim 5 wherein the latch has a projection and the other end of the first torsion spring is urged against the projection to form a non-contact region with an acute angle.

7. An electromagnetic lock according to claim 6 wherein a microswitch is also provided within the housing, the microswitch being proximate the projection, the projection having a raised area corresponding to the microswitch.

8. The electromagnetic lock of claim 5, wherein the position-limiting portion rotates in response to rotation of the unlocking mechanism.

9. An electromagnetic lock according to claim 8 wherein the release mechanism has an arcuate surface and is slidable into the arcuate surface and along an inner edge of the arcuate surface on pulling outward of the pull means.

10. An electromagnetic lock according to claim 1 wherein the housing contains an electromagnet and the housing contains a barrier of plastics material on the side of the housing interior adjacent the core.

Images