CN203742310U - Electromagnetic lock - Google Patents

Abstract

The utility model relates to an electromagnetic lock, which comprises a mounting shell. A containment space is arranged in the mounting shell, and an electromagnet, an iron core, an upper toothed plate, a lower toothed plate, and a shift fork are sequentially arranged in the containing space, and the electromagnet is arranged in the mounting shell. The upper part, the iron core and the upper toothed disc are coaxially fixedly connected, the lower toothed disc is coaxially fixedly connected with the shift fork, there is a gap between the electromagnet and the iron core, and the upper toothed plate and the lower toothed plate are respectively arranged on the opposite side to be able to interact with each other. The meshed teeth are provided with a torsion spring that makes the shift fork return to the unlocked position on the connecting shaft between the lower chainring and the shift fork. The teeth on the upper toothed disc and the lower toothed disc are T-shaped teeth. A protrusion is provided in the installation shell to prevent the rotation of the iron core and limit the position of the lower chainring. An unlocking arm is also included, and the unlocking arm is arranged on the upper chainring and protrudes from the surface of the installation shell. Compared with the prior art, the utility model uses the meshing of toothed discs to lock the lock, and utilizes the adsorption of magnets to unlock the lock. The utility model has a simple structure, is easy to realize, has few parts, and is convenient for maintenance.

Description

electromagnetic lock

technical field

The utility model relates to a lockset for a rail transit door, in particular to an electromagnetic lock used on a rail transit driver's door. the

Background technique

The door locks used by drivers on rail transit vehicles are generally locked by deep locking gears or locked by locking forks. The traditional fork locks are locked by gears, which have a complex structure and are not easy to maintain; and the gears of traditional locks are easy to get stuck. Bring inconvenience to daily use. the

Utility model content

Purpose of the utility model: The purpose of the utility model is to provide an electromagnetic lock with simple structure, easy maintenance and long service life. the

Technical solution: The utility model is realized by adopting the following technical solution: an electromagnetic lock, including a mounting shell, a containing space is set in the mounting shell, and an electromagnet, an iron core, an upper toothed plate, a lower toothed plate, and a shift fork are sequentially arranged in the containing space , the electromagnet is set on the upper part of the installation shell, the iron core is fixedly connected coaxially with the upper toothed disc, the lower toothed plate is fixedly connected coaxially with the shift fork, there is a gap between the electromagnet and the iron core, and the upper toothed plate and the lower toothed plate Teeth that can engage with each other are respectively arranged on the opposite sides, and when the shift fork is rotated to the locked position, the upper toothed plate and the lower toothed plate are meshed with each other. the

A torsion spring that makes the shift fork return to the unlocked position is arranged on the connecting shaft of the lower chainring and the shift fork. the

The teeth on the upper toothed disc and the lower toothed disc are T-shaped teeth. the

A protrusion is provided in the installation shell to prevent the rotation of the iron core and limit the position of the lower toothed disc. the

An unlocking arm is also included, and the unlocking arm is arranged on the upper chainring and protrudes from the surface of the installation shell. the

Beneficial effects: Compared with the prior art, the utility model uses the meshing of toothed discs to lock the lock, and utilizes the adsorption of magnets to unlock. the

Description of drawings

Fig. 1 is the structural representation of the utility model. the

Wherein 1-installation shell, 2-electromagnet, 3-iron core, 4-upper toothed plate, 5-lower toothed plate, 6-torsion spring, 7-shift fork, 8-unlocking arm. the

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings of the description:

The utility model relates to an electromagnetic lock, in particular to a fork lock used on the driver's door of a rail vehicle. It includes a metal installation shell 1, and an electromagnet 2 is arranged in the containment space in the installation shell 1. The electromagnet is arranged on the top of the containment space, and an iron core 2 is arranged near the lower side of the electromagnet. When the electromagnet 1 When energized, the electromagnet 1 will suck up the iron core 2, and the iron core 2 will fall back to its original position after the power is off. Two protrusions are set on the installation shell 1, and a concave hole corresponding to the position and size of the iron core 2 is set on the iron core 2. slot so that the core cannot rotate within the housing.

On the lower side of the iron core 2, the upper toothed plate 3 is fixedly installed. Specifically, the iron core 2 and the upper toothed plate 3 are welded together. Since the iron core 2 cannot rotate, the upper toothed plate 3 can only be installed in the installation shell 1. It moves up and down but cannot rotate, and several T-shaped teeth are set on the upper toothed disc. the

At the bottom of the upper toothed disc 3, the lower toothed disc 4 is arranged, and a number of T-shaped teeth are also arranged on the lower toothed disc. and two sets of T-shaped teeth can be staggered and meshed with each other. On the other side of the lower tooth plate, a connecting shaft is fixedly arranged, and the connecting shaft is fixedly connected to the shift fork 7. A bearing is arranged between the lock fork 7 and the installation shell 1, and due to the spacing of the lock fork 7, the lower chainring 4 can only rotate in the installation shell and cannot move up and down. the

A torsion spring 6 is arranged on the connecting shaft. When there is no external force, the torsion spring drives the lock fork 7 to return to the unlocked position. the

An unlocking arm is set on the upper toothed disc 3, and the unlocking arm stretches out of the mounting shell, and grooves are set at the corresponding positions of the mounting shell. the

The utility model is illustrated below by a specific example:

In the unlocking stage of the door leaf, the T-shaped teeth on the upper toothed plate and the lower toothed plate are against each other, and the lower toothed plate can rotate freely; when the door leaf lock pin moves with the door, the lock pin pushes the shift fork to rotate, and the shift fork drives the lower tooth The disk rotates until it reaches the meshing position of the upper and lower toothed disks. The upper toothed disk moves downward due to gravity, and the upper and lower toothed disks engage to prevent the fork from rotating and achieve the purpose of locking; when unlocking, the electromagnet is energized, and the iron core is attracted. The upper toothed plate is driven to move upward, and the upper and lower toothed plates are disengaged from the meshing position. Under the action of the torsion spring, the lower toothed plate and the shift fork rotate, and the door leaf lock pin leaves the locked position to realize unlocking. When manually unlocking, the external toggle upper chainring stretches out the unlocking arm of the mounting case. Make the upper toothed plate move upwards, the upper and lower toothed plates are out of the meshing position, and under the action of the torsion spring, the lower toothed plate and the shift fork rotate, and the door leaf lock pin leaves the locked position to realize unlocking.

Claims (5)

1. An electromagnetic lock, characterized in that: it includes a mounting shell, a containment space is set in the mounting shell, an electromagnet, an iron core, an upper toothed plate, a lower toothed plate, and a shift fork are sequentially arranged in the containing space, and the electromagnet is arranged on the installation The upper part of the shell, the iron core and the upper toothed disc are coaxially fixedly connected, and the lower toothed disc is coaxially fixedly connected with the shift fork. Interengaging teeth, when the fork is rotated to the locked position, the upper and lower chainrings mesh with each other. 2. The electromagnetic lock according to claim 1, characterized in that: a torsion spring for returning the shift fork to the unlocked position is provided on the connecting shaft between the lower chainring and the shift fork. 3. The electromagnetic lock according to claim 1, characterized in that: the teeth on the upper toothed plate and the lower toothed plate are T-shaped teeth. 4. The electromagnetic lock according to claim 1, wherein a protrusion is provided in the installation shell to prevent the rotation of the iron core and limit the position of the lower chainring. 5. The electromagnetic lock according to claim 1, further comprising an unlocking arm, the unlocking arm is arranged on the upper chainring and protrudes from the surface of the installation shell.