Engagement device for portable information terminal

Abstract

This article is an engaging device that engages an attachment attached to a portable information terminal such as a smartphone or a portable information terminal case attached thereto (hereinafter, the portable information terminal and the portable information terminal case will be referred to as the "portable information terminal, etc.") with the portable information terminal, etc. This article includes an annular portion formed by an annular plate-like member and a disc portion formed by a disc-like plate-like member that fits inside the annular portion (a right-cylindrical space whose side faces are the inner peripheral surface of the annular portion), with the annular portion attached to one of the portable information terminal, etc. and the attachment, and the disc portion attached to the other of the portable information terminal, etc. and the attachment. With the disc portion fitted inside the annular portion, when the disc portion attempts to displace laterally relative to the annular portion (perpendicular to the axis of the right circular cylinder), the outer peripheral surface of the disc portion abuts against the inner peripheral surface of the annular portion, thereby restricting the displacement (this makes it possible to prevent or reduce unexpected separation between the attachment and the portable information terminal, etc.). Reference Photo 1, which shows the state of use, shows the annular portion attached (here, adhered with double-sided tape) to a portable information terminal or the like (here, a portable information terminal case), and Reference Photo 2, which shows the state of use, shows the disc portion attached (here, adhered with double-sided tape) to an attachment (here, a card holder).By fitting the disc portion inside the annular portion as shown in Reference Photo 3, which shows the state of use, as described above, the lateral displacement of the disc portion relative to the annular portion is restricted, and it is possible to prevent or reduce unexpected separation between the attachment and the portable information terminal or the like. Here, the attachment and the portable information terminal etc. are attached by magnetic force; specifically, one of the attachment to which the item is attached and the portable information terminal etc. may have a magnet, and the other may have metal that is attracted to the magnet, or both the attachment to which the item is attached and the portable information terminal etc. may have magnets (that attract each other) (for example, at least one of the annular portion and the disc portion may have a material part made of steel or the like that is attracted by magnetic force, and one of the portable information terminal etc. and the attachment, different from the one to which at least one of them is attached, may have a magnet that generates the magnetic force).In addition, here, a portable information terminal or the like is used as a case for a portable information terminal, but as shown in Reference Photo 4, which shows the state of use, the annular portion can be attached to the portable information terminal, and this item can engage between the attachment and the portable information terminal.

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