JPH042625Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention uses the attraction force of a permanent magnet to detachably attract two plates, and attaches the free end of the arm provided on one plate to the other plate. The present invention relates to a key chain in which a key inserted into an arm part is anchored by the contact between the two arms.

(Prior art) Various types of key chains have been provided in the past, but these key chains do not include those in which a hook is provided inside a case made of leather or the like, and the key is moored to this hook and then wrapped in the case. Keys were often attached to medals, etc., usually made by die-casting or the like, with a chain.

(Problem that the invention aims to solve) However, the fasteners used to secure the key with a chain, etc. should not be used if the key chain comes into contact with other small items such as in a pocket and easily comes off. Since there is no point in using a key chain, the method of attaching it is relatively troublesome, and if the key chain is easy to operate, it requires quite strong fingertip force. However, there were problems such as the high cost of the chains and their assembly.

(Means for Solving the Problems) This invention is a key chain proposed to solve the above problems, and it consists of two key chains that are attached and detached by the attraction force of the permanent magnet 2. In the keychain plates 1 and 1', at least the free end 4a of the key mooring arm 4 provided on one of the plates 1 or 1' is in contact with the surface of the other plate, and the arm 4 and both A gap is provided between the plates 1 and 1' so that the key can be anchored to the arm 4.

(Function) The key holder configured in this way locks the key into the key mooring arm 4 and connects the two plates 1 and 1'.
The key is anchored to the arm by attracting it with magnetic force, and the key can be removed by separating the two plates 1, 1', making the operation very simple.

(Example) An example of this invention will be described below with reference to the drawings.

1 and 1' are two disc-shaped plates for key chains, which are molded from die-cast alloy, synthetic resin, etc., and one side of plate 1 is
A plate-shaped permanent magnet 2 is buried in the center of the plate 1' with one magnetic pole surface exposed, and a ferromagnetic plate 3 is buried in the center of one surface 1'a of the plate 1' with one side exposed. surface 1a, due to the attraction force of the permanent magnet 2.
1'a is brought into contact with and adsorbed. 1
b and 1'b are a pair of dowels for determining the suction position. The permanent magnet 2 and the ferromagnetic plate 3 are embedded integrally in the plates 1 and 1' by molding, but holes for fitting are provided in the plates 1 and 1' and they are fitted with adhesive to prevent them from falling off. In some cases, permanent magnets may be used instead of the ferromagnetic plate 3, and two permanent magnets may be attracted to each other with different polarity surfaces. Further, a notch portion 1c is provided along the peripheral edge of one of the plates 1, and the outer peripheral edge of the portion 1c serves as a key mooring arm portion 4 having a circular cross section with a smaller diameter than the thickness of the plate 1. , is slightly bent at the base 4b so that its center line is located on the surface 1a, that is, on the suction surface of the plate 1' and both plates 1, 1' when suction is performed.

Also, the peripheral edge of the other plate 1'
The arm portion 4 and the notch portion 1c are cut out at a portion corresponding to the free end portion 4a of the arm portion 4. A protrusion 1'd is provided to fill the opening of the recessed part 1c and to have a shape similar to the base 4b of the arm 4, and the arm 4 of the protrusion 1'd is
A free end 4a is located at a position corresponding to the free end 4a of the
A recessed portion 1'c is provided into which the holder is fitted and abutted.

Then, insert the key into the arm 4 and tighten the dowels 1b, 1'.
When plates 1 and 1' are attracted to each other by engaging plates 1 and 1', the free end 4a of arm 4 of plate 1 will come into contact with plate 1', and the key will be anchored. For attaching and detaching, use plate 1,
It is easy because it can be done by adsorption and desorption of 1'.

FIG. 7 and subsequent figures show other embodiments, and plate 1
is the main body of the key chain and is modeled after a car steering wheel.
The plate 1 is provided with an annular arm portion 4 for mooring the key and a connecting portion 5 integrally extending between the arm portions 4. The connecting portion 5 has a plurality of arm-shaped portions 5a, and a permanent magnet 2 is buried in the central portion where each arm-shaped portion 5a is concentrated, with one magnetic pole surface exposed.

Further, the arm portion 4 to which one arm-like portion 5a' is connected is provided with an opening for inserting a key, and the arm-like portion 5a' also has a notch at the connection portion with the arm portion 4. Reference numeral 1' denotes a plate attached to the central part of the connecting part 5, the opening of the arm part 4, and the arm-like part 5a', and the plate 1' is made of an iron plate and a stainless steel plate. , or there are cases where a magnetic plate 3 such as an iron plate or a stainless steel plate is buried with one side exposed on the side facing the plate 1, and the opening of the arm portion 4 is attracted by the permanent magnet 2 of the plate 1. It's starting to get blocked.

Therefore, by inserting the key into the arm portion 4 through the opening and adhering the plate 1' to the connecting portion 5, the key is anchored and will not slip out.

(Effects) As described above, the key holder according to this invention has two key holder plates that are attached and detached by abutting their respective surfaces due to the attraction force of a permanent magnet, and a key mooring arm provided on one of the plates. at least the free end of the plate abuts the surface of the other plate;
Since the structure has a gap between the arm and both plates that allows the key to be moored to the arm, the key can be locked by simply inserting the key into the arm of one plate and adsorbing the other plate. The key can be moored to prevent it from slipping out, and when removing the key, all you have to do is release the adhesion of the plate, so it is very easy to operate, and there is no need for the locking and unlatching operations that are required with conventional key chain stops.

In addition, if the permanent magnet and the ferromagnetic plate that attracts it are integrated into the plate by molding, no assembly is required, reducing costs and creating a clean appearance without chains or fasteners. It can be made into a good one.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of the key chain according to this invention, Fig. 2 is a sectional view of the same, Fig. 3 is a side view of one plate, Fig. 4 is a front view of the same suction surface side, and Fig. 5 is a sectional view of the same. A side view of the other plate, FIG. 6 is a front view of the non-adsorption surface side, FIG. 7 is a front view of another embodiment, and FIGS. 8 and 9 are cross-sectional views taken along line AA and line BB, respectively. It is. 1, 1'...Plate, 1a, 1a'...Adsorption surface,
1b, 1'b...Dowel, 1'c...Recess, 1'd...
...Convex portion, 2...Permanent magnet, 3...Ferromagnetic plate, 4...
...Arm part, 4a...Free end, 5...Connection part, 5a...
...arm-like part.

Claims (1)

[Scope of utility model registration request] In two key chain plates that are attached and detached by bringing their surfaces into contact with each other due to the attraction force of a permanent magnet, at least the free end of the key mooring arm provided on one of the plates is attached to the surface of the other plate. 1. A key holder characterized by having a gap between the arm portion and both plates that allow the key to be anchored to the arm portion.