JPH0510675U - Door locking device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a door locking device in which the magnetic attraction force of a rubber magnet does not fluctuate at all, and the door is highly dustproof and can be attracted to and retained by the box body. [Structure] A rubber magnet 2 is attached to the front surface of a sponge base member 1, and the rear surface of the base member 1 is attached to the entire surface of the front surface of the door contact plate portion 4 of the box body 3 or the rear surface of the door 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a locking device for holding a door in a distribution box storage box or the like by attracting and holding the door to the box body by a magnetic attraction force.

[0002]

[Prior Art]

 A magnet type door locking device in which a rubber magnet is fixed on the front surface of the door contact plate of the box body or on the rear surface of the door and the door is attracted to the door contact plate by magnetic attraction is already known.

However, in the conventional door locking device, since the rubber magnet is directly attached to the door, the door contact plate portion is distorted and deformed due to a defect in the sheet metal processing of the box body or an accident during transportation and use. If so, the surface of the rubber magnet is distorted and deformed accordingly, and when the door is closed, a gap is created between the surface of the rubber magnet and the back surface of the door.

The presence of such a gap causes the magnetic attraction force of the rubber magnet to vary, not only reducing the locking force of the door by the rubber magnet, but also allowing dust to enter the box body. It will be.

[0005]

[Problems to be solved by the device]

 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a door locking device that does not cause any variation in the magnetic attraction force of a rubber magnet and has a high dust-proof property that allows the door to be attracted to and retained by the box body.

[0006]

[Means for Solving the Problems]

 The door locking device of the present invention has a rubber magnet 2 attached to the surface of a sponge base member 1, and the back surface of the base member 1 is the door of the box body 3 in the following description with reference numerals in the accompanying drawings. Stick it on the entire circumference of the front surface of the contact plate 4 or the back surface of the door 5.

[0007]

[Action]

 When the door 5 is rotated about the hinge shaft on one side to close it with respect to the box body 3, the back surface of the door 5 is attracted and held by the surface of the rubber magnet 2 by the magnetic attraction force at the end of the closing operation. 5 is locked in the closed position.

[0008]

【Example】

 In the illustrated embodiment, a double-sided adhesive tape 6 is attached to the back surface of a sponge base member 1 formed of neoprene rubber in a strip shape, and a rubber magnet 2 formed in a strip shape is attached to the base member 1 by a double-sided adhesive tape 7. Has been. The base member 1 is attached to the surface of the door contact plate portion 4 of the box body 3 by the double-sided adhesive tape 6 over the entire circumference.

The base member 1 can be attached to the back surface of the door 5 over the entire circumference. Alternatively, the double-sided adhesive tape may not be used and may be attached to the box body 3 or the door 5 by applying an adhesive.

[0010]

[Effect of the device]

 As described above, in the door locking device of the present invention, the rubber magnet 2 is attached to the surface of the door contact plate portion 4 of the box body 3 or the back surface of the door 5 via the sponge base member 1. Therefore, even if the door contact plate portion 4 or the door 5 is distorted and deformed, the distorted deformation is accurately absorbed by the compressive deformation of the sponge base member 1, and the rubber magnet 2 is magnetically attracted over the entire length and width. The door contact plate portion 4 or the door 5 is evenly adhered to the door 5 without causing the force to vary, and the door 5 can be firmly locked in the closed position.

Further, since the rubber magnet 2 is in close contact with the door contact plate portion 4 or the door 5 without a gap in this manner, the intrusion of dust into the box body 3 can be properly prevented. Furthermore, the presence of the sponge base member 1 alleviates the impact when the door 5 is closed and prevents damage to the painted surface of the door 5 and the box body 3.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a door closed using a door locking device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a rubber magnet with a base member used in the door locking device.

[Explanation of symbols]

 1 Base member made of sponge 2 Rubber magnet 3 Box body 4 Door contact plate 5 Door 6 Double-sided adhesive tape 7 Double-sided adhesive tape

Claims (1)

[Claims for utility model registration] [Claim 1] A rubber magnet 2 is attached to the surface of a sponge base member 1, and the back surface of the base member 1 is the front surface of the door contact plate portion 4 of the box body 3 or the back surface of the door 5. Door locking device attached to the entire circumference of.