Patent Application
20100171322
1. Field of the Invention
The present invention relates to an electromagnetic lock, and more particularly to an electromagnetic door lock device including a mounting structure for allowing the electromagnetic door lock device to be easily and quickly mounted or attached or secured to the supporting structures or walls or members or devices.
2. Description of the Prior Art
Typical electromagnetic door lock devices comprise an electromagnetic device and an armature plate or the like to be mounted or attached or secured to the supporting structures or members or devices, such as the door panels, the door frames, the cabinets, the walls or the like, and arranged for allowing the electromagnetic device and the armature plate to be acted or actuated or operated with each other in order to selectively lock the door panels to the door frames, or to selectively release the door panels from the door frames.
For example, U.S. Pat. No. 4,826,223 to Geringer et al. discloses one of the typical electromagnetic door lock devices comprising an electromagnet, a bracket for holding the electromagnet in a door frame to force the opening therein, an electrical circuit for connecting the electromagnet to a power source, an armature magnetically attached to the electromagnet, and a connector for holding the armature on a door edge in the frame for adjustable movement towards the electromagnet and a lock component.
The electromagnet and the mounting brackets and the locking plates should first be secured together, and then attached or secured onto the supporting members, door panels, door frames, cabinets, walls or the like with fasteners. However, the electromagnet and the mounting brackets and the locking plates include a heavy weight that may not be easily held by the user while attaching or securing the electromagnet and the mounting brackets and the locking plates onto the supporting members, door panels, door frames, cabinets, walls or the like.
U.S. Pat. No. 4,915,431 to Bailey discloses another typical electromagnetic door lock comprising a self-adjusting switch assembly for door-movement alert, an armature adapted for floating attachment to a door by a plunger-bolt assembly fixed to the door, and an electromagnet adapted for fixed attachment to a door frame with fasteners.
However, the electromagnet also includes a heavy weight that may not be easily held by the user while attaching or securing the electromagnet onto the supporting members, door panels, door frames, cabinets, walls or the like.
U.S. Pat. No. 4,981,312 to Frolov, U.S. Pat. No. 5,133,581 to Coleman, U.S. Pat. No. 5,184,854 to Chen, U.S. Pat. No. 5,376,910 to Geringer et al., U.S. Pat. No. 6,135,515 to Roth et al., and U.S. Pat. No. 6,260,892 to Chang disclose the other typical electromagnetic door locks each also comprising an electromagnet adapted for fixed attachment to a door frame with fasteners, and an armature plate adapted for floating attachment to a door by a plunger-bolt assembly fixed to the door and for selectively locking the door panels to the door frames, or for selectively releasing the door panels from the door frames.
However, the electromagnet also includes a heavy weight that may not be easily held by the user while attaching or securing the electromagnet onto the supporting members, door panels, door frames, cabinets, walls or the like.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional electromagnetic door lock devices.
The primary objective of the present invention is to provide an electromagnetic lock including a mounting structure for allowing the electromagnetic door lock device to be easily and quickly mounted or attached or secured to the supporting structures or walls or members or devices.
In accordance with one aspect of the invention, there is provided an electromagnetic door lock device comprising a mounting plate including at least one aperture formed therein for receiving a first fastener and for mounting the mounting plate to a supporting device, and the mounting plate including at least one protrusion extended therefrom and including a screw hole formed in the protrusion, a housing including at least one passage formed therein and aligned with the protrusion and the screw hole of the mounting plate for quickly anchoring and positioning the housing to the mounting plate, and a second fastener engaged through the passage of the housing and engaged with the screw hole of the mounting plate for easily securing the housing to the mounting plate.
The housing includes a depression formed in the housing and communicating with the passage of the housing and having an outer diameter greater than that of the passage of the housing for receiving and engaging with the protrusion.
The housing includes a recess formed in the housing and communicating with the passage of the housing and the recess includes an outer diameter greater than that of the passage of the housing for receiving and engaging with a head of the second fastener.
The mounting plate includes at least one fence extended therefrom for forming and defining the aperture of the mounting plate.
The mounting plate includes at least one fence extended therefrom for forming and defining at least one recess in the mounting plate and for weight reducing purposes.
Further objectives and advantages of the present invention will become apparent from a careful reading of the detailed description provided hereinbelow, with appropriate reference to the accompanying drawings.
Referring to the drawings, and initially to
The electromagnetic device 10 includes a mounting plate 11 having one or more apertures 12 formed therein for receiving latches or fasteners 13 which may be used to attach or secure the mounting plate 11 to either of the supporting device 8, 88 (
The mounting plate 11 further includes one or more (such as two) protrusions 17 extended downwardly therefrom, and a screw hole 18 formed in each of the protrusions 17 for receiving or engaging with a fastening means or device or fastener 20 which may be used to solidly secure a housing 30 to the mounting plate 11, in which the housing 30 is provided for receiving the typical electromagnetic members (not shown), such as the coils, the plungers, the solenoids or the like. Several examples of the typical electromagnetic members have been shown and disclosed in U.S. Pat. No. 4,981,312 to Frolov, U.S. Pat. No. 5,133,581 to Coleman, U.S. Pat. No. 5,184,854 to Chen, U.S. Pat. No. 5,376,910 to Geringer et al., U.S. Pat. No. 6,135,515 to Roth et al., and U.S. Pat. No. 6,260,892 to Chang which may be taken as the references for the present invention.
The housing 30 includes one or more (such as two) passages 31 formed therein and aligned with the protrusions 17 and the screw holes 18 of the mounting plate 11 for receiving or engaging with the protrusions 17 and the fasteners 20, and includes one or more (such as two) depressions 32 formed in the upper portion of the housing 30 and communicating with the passages 31 of the housing 30 respectively and having an outer diameter greater than that of the passages 31 of the housing 30 for receiving or engaging with the protrusions 17 respectively (
In operation or in assembling the mounting plate 11 and the housing 30 to either of the supporting device 8, 88, as shown in
It is to be noted that the mounting plate 11 may first be easily and solidly attached or secured to either of the supporting device 8, 88 with the latches or fasteners 13, and the housing 30 may then be quickly anchored and positioned to the mounting plate 11 by aligning and engaging the protrusions 17 of the mounting plate 11 into the depressions 32 of the housing 30 respectively, the fasteners 20 may then be quickly engaged through the passages 31 of the housing 30 and quickly engaged with the screw holes 18 of the mounting plate 11 for quickly securing and assembling the mounting plate 11 and the housing 30 together without holding the housing 30 for a long time.
Accordingly, the electromagnetic door lock device in accordance with the present invention includes a mounting structure for allowing the electromagnetic door lock device to be easily and quickly mounted or attached or secured to the supporting structures or members or devices.
Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the detailed construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.
