Double-holding type electromagnetic lock with silencing function

Abstract

The utility model discloses a double holding type electromagnetic lock with a silencing function, which comprises a shell, an upper cover, a fixed iron core I, a fixed iron core II, a guide diamagnetic tube, a coil assembly, an O-shaped ring, a magnet, a movable iron core and a push rod, and relates to the field of electromagnetic locks. The electromagnetic lock can work normally in low-temperature environments and the like, and the service life of the electromagnetic lock is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic locks, specifically a dual-holding electromagnetic lock with a silencer. Background Technology

[0002] The silent double-holding electromagnetic lock is an innovative electromagnetic lock that combines low-noise operation with bidirectional self-holding function. With its bidirectional self-holding and silent structure, it meets the complex needs of modern high-requirement scenarios and will further develop towards lightweight, adaptive and highly integrated directions in the future.

[0003] Silent double-holding electromagnetic locks can be used in products in many fields, such as car fuel tank caps, locks for new energy vehicle charging piles, locks for shared transportation tools, and intelligent access control systems. However, in existing technologies, due to low temperatures and other reasons, the rubber ring, which is mainly used for noise reduction, is prone to sticking to the fixed iron core, causing the electromagnetic lock to fail to open and reducing its service life. Summary of the Invention

[0004] (a) Technical problems to be solved.

[0005] To address the shortcomings of existing technologies, this utility model provides a noise-reducing double-holding electromagnetic lock, which solves the problem mentioned in the background art where the rubber ring easily sticks to the fixed iron core, causing the electromagnetic lock to malfunction and reducing its service life.

[0006] (ii) Technical solution.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a silent double-holding electromagnetic lock, comprising a housing, a top cover, a first fixed iron core, a second fixed iron core, a guide antimagnetic tube, a coil assembly, an O-ring, a magnet, a movable iron core, and a push rod, characterized in that: the electromagnetic lock further includes a magnetic shielding sheet; the first fixed iron core is fixedly connected to the bottom of the housing; the second fixed iron core is fixedly connected to the top cover; the guide antimagnetic tube is installed in a through hole in the coil assembly; and one end of the push rod is connected to the movable iron core. The iron core is fixedly connected, and the other end passes through the through hole provided by the fixed iron core one or fixed iron core two. The movable iron core and push rod assembly is installed in the guide antimagnetic tube. The magnet is fixedly installed on the coil assembly. One end of the guide antimagnetic tube is sleeved on the fixed iron core one, and the other end is sleeved on the fixed iron core two. The O-ring is sleeved on the push rod and located between the movable iron core and the magnetic shielding sheet. The magnetic shielding sheet is sleeved on the push rod and located between the O-ring and the fixed iron core one or fixed iron core two. The housing and the top cover are fixedly connected.

[0008] Preferably, there are two push rods, located at both ends of the movable iron core.

[0009] Preferably, there are two magnetic shielding sheets, which are respectively fitted onto the push rods at both ends of the movable iron core.

[0010] Preferably, there are two O-rings, which are respectively fitted onto the push rods at both ends of the movable iron core.

[0011] Preferably, the material of the guide antimagnetic tube is copper, stainless steel, or plastic.

[0012] Preferably, the magnetic shielding sheet is made of copper or stainless steel.

[0013] Preferably, two magnets are fixedly installed on the outside of the coil assembly at the middle position.

[0014] (iii) Beneficial effects.

[0015] This utility model provides a noise-reducing double-holding electromagnetic lock, which has the following advantages: by adding a magnetic shielding sheet between the O-ring and the fixed iron core, the problem of O-ring sticking to the fixed iron core in low-temperature environments is effectively solved, the service life of the electromagnetic lock is extended, and the adaptability of the electromagnetic lock to the environment is increased. Attached Figure Description

[0016] Figure 1 This is an exploded view of the present invention.

[0017] Figure 2 This is a schematic diagram of the assembly of this utility model.

[0018] In the diagram: 1. Housing; 2. Top cover; 3. Fixed iron core one; 4. Fixed iron core two; 5. Guide antimagnetic tube; 6. Coil assembly; 7. O-ring; 8. Magnet; 9. Movable iron core; 10. Push rod; 11. Magnetic shielding sheet. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-2This utility model provides a silent double-holding electromagnetic lock, including a shell, a top cover, a first fixed iron core, a second fixed iron core, a guide antimagnetic tube, a coil assembly, O-rings, magnets, a movable iron core, push rods, and magnetic shielding sheets. The first fixed iron core is fixedly connected to the bottom of the shell, and the second fixed iron core is fixedly connected to the top cover. The guide antimagnetic tube is inserted into the through hole of the coil assembly. Two push rods are fixedly connected to both ends of the movable iron core. Two O-rings are respectively sleeved on the two push rods close to the movable iron core. Two magnetic shielding sheets are respectively sleeved on the two push rods away from the movable iron core. Two magnets are fixedly fixed at the middle position outside the coil assembly. The combination of the first fixed iron core, the second fixed iron core, the guide antimagnetic tube, the coil assembly, the O-rings, the magnets, the movable iron core, the push rods, and the magnetic shielding sheets is placed inside the shell. The top cover is fixedly connected to the shell. One end of the guide antimagnetic tube is sleeved on the first fixed iron core, and the other end is sleeved on the second fixed iron core.

[0021] Working principle: When the silent double-lock electromagnetic lock is powered on, the coil assembly generates magnetic force. Under the action of the magnetic force generated by the coil assembly, the movable iron core moves to the middle position. At this time, the push rod moves away from the fixed iron core under the action of the movable iron core, and the electromagnetic lock is in the open state. When it is not powered on, the magnet installed on the coil assembly magnetizes the fixed iron core. Through the magnetic force on the fixed iron core, the movable iron core drives the push rod to connect with the fixed iron core, and the electromagnetic lock is in the closed state.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A silent double-holding electromagnetic lock, comprising a housing (1), a top cover (2), a first fixed iron core (3), a second fixed iron core (4), a guide antimagnetic tube (5), a coil assembly (6), an O-ring (7), a magnet (8), a movable iron core (9), and a push rod (10), characterized in that: The electromagnetic lock also includes a magnetic shielding sheet (11), the first fixed iron core (3) is fixedly connected to the bottom of the housing (1), the second fixed iron core (4) is fixedly connected to the top cover (2), the guide antimagnetic tube (5) is installed in the through hole of the coil assembly (6), one end of the push rod (10) is fixedly connected to the movable iron core (9), and the other end passes through the through hole provided by the first or second fixed iron core. The movable iron core (9) and the push rod (10) assembly is installed in the guide antimagnetic tube (5). The magnet (8) is fixedly installed on the coil assembly (6). One end of the guide antimagnetic tube (5) is sleeved on the fixed iron core one (3) and the other end is sleeved on the fixed iron core two (4). The O-ring (7) is sleeved on the push rod and located between the movable iron core (9) and the magnetic shielding sheet (11). The magnetic shielding sheet (11) is sleeved on the push rod (10) and located between the O-ring (7) and the fixed iron core one (3) or the fixed iron core two (4). The housing (1) is fixedly connected to the top cover (2).

2. The electromagnetic lock with a silent double-holding mechanism according to claim 1, characterized in that: There are two push rods (10), located at both ends of the movable iron core (9).

3. The electromagnetic lock with a silent double-holding mechanism according to claim 1, characterized in that: There are two magnetic shielding sheets (11), which are respectively fitted onto the push rods (10) at both ends of the movable iron core (9).

4. The electromagnetic lock with a silent double-holding mechanism according to claim 1, characterized in that: There are two O-rings (7), which are respectively fitted onto the push rods (10) at both ends of the movable iron core (9).

5. The electromagnetic lock with a silent double-holding mechanism according to claim 1, characterized in that: The material of the guide antimagnetic tube (5) is copper, stainless steel or plastic.

6. The electromagnetic lock with a silent double-holding mechanism according to claim 1, characterized in that: The magnetic shielding sheet (11) is made of copper or stainless steel.

7. The electromagnetic lock with a silent double-holding mechanism according to claim 1, characterized in that: Two magnets (8) are fixedly installed on the outside of the coil assembly at the middle position.

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