JPH022461U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a key with magnetic pole information showing a first embodiment of the present invention, Fig. 2 is an exploded perspective view of the key, Fig. 3 is a vertical sectional view along the X-Y line of Fig. Fig. 4 is a perspective view of a key body showing a second embodiment of the present invention, Fig. 5 is a perspective view of a key having magnetic pole information using the same key body, and Fig. 6 shows a third embodiment of the present invention. FIG. 7 is a perspective view of a key with magnetic pole information using the key body; FIG. 8 is a perspective view of the key body showing the fourth embodiment of the present invention; FIG. 9 is a perspective view of the key body. A perspective view of a key having magnetic pole information using the main body. FIG. 10 is a perspective view of a key having magnetic pole information showing a fifth embodiment of the present invention. Explanation of symbols, 1, 1-1,..., 1-3...Key with magnetic pole information, 2, 2-1,..., 2-3
...Key body, 3a, 3a-1,..., 3a-3
...One side part, 3b, 3b-1,..., 3b
-3...Other side part, 4N, 4S, 4N-1, 4
S-1...Permanent magnet for magnetic pole information, 4N-2, 4N-
3... N magnetic pole for magnetic pole information, 4S-1, 4S-3... S magnetic pole for magnetic pole information, 5, 5-1,..., 5-3...
Magnet insertion hole, 6, 6-1,..., 6-4
...Magnetic pole information section, 7...Magnetic powder generation prevention protective film.

Claims (1)

[Scope of claim for utility model registration] (1) 1 along the insertion direction of the key on the key body
A magnet insertion part such as a recess, a through hole, or a groove as described above is formed, and a plurality of permanent magnets having magnetic poles of N pole and S pole are arranged and fixed in the magnet insertion part with an appropriate width and arrangement pitch to form a P pole. (P is an integer of 2 or more) A magnetic pole formed by forming a permanent magnet for magnetic pole information or fixing a permanent magnet for magnetic pole information formed by magnetizing multiple N and S poles at an appropriate magnetization pitch A permanent magnet forming the information part and forming the magnetic pole information part is formed of a rare earth magnet, and the generation of magnetic powder on the surface of the permanent magnet exposed from the key body due to breakage of the permanent magnet is prevented. A key with magnetic pole information formed with a protective film that prevents the generation of magnetic particles. (2) When the magnetic pole information part is formed of a plurality of permanent magnets, there are a plurality of magnet insertion parts for inserting, arranging, and fixing the permanent magnets, and these plurality of magnet insertion parts are free. The scope of claim for utility model registration (1) is formed at equal intervals.
Key with magnetic pole information listed in ). (3) The magnet insertion portions formed at unequal intervals have magnetic pole information as described in claim (2) of the utility model registration claim, in which the magnet insertion portions are formed with different widths along the key insertion direction. Key. (4) The magnetic pole information permanent magnet formed on the key body by magnetizing multiple N and S poles is a practical magnet in which the N and S poles are formed with pitches of irregular width. A key having magnetic pole information as set forth in claim (1) of patent registration. (5) The above-mentioned permanent magnet for magnetic pole information is inserted and fixed into the magnet insertion part by molding means of rare earth resin magnet, and then magnetized and formed into multiple magnetic poles for magnetic pole information.Request for Utility Model Registration. Keys with magnetic pole information listed in range (1).