JP3009795U - Arm ring with magnet - Google Patents

Abstract

(57) [Summary] [Structure] An open ring is formed by placing a magnet in the middle of a copper or brass tube, and at both ends of the tube, make a recess on the inner surface of the ring made of copper or brass. The sphere having the sphere is provided, the entire surface is plated with a noble metal, and the magnet is embedded in the recess of the sphere. [Effect] The magnet can be present in a beautiful noble metal arm ring in a state invisible from the outside.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bracelet having a magnet inside and a surface made of precious metal.

[0002]

[Prior art]

 It is believed that keeping magnets close to the human body has the effect of promoting blood circulation and preventing stiff shoulders, so several magnets, such as those connected to an arm ring, are used. However, conventional products of this type are not so beautiful because they are made by forming a metal holder by pressing a metal plate and connecting the plated product to the watch belt. It was

[0003]

[Problems to be solved by the device]

 An object of the present invention is to provide an arm ring having a sufficient beauty as an accessory, which has a magnet inside and in which the existence of the magnet is hardly known.

[0004]

[Means for Solving the Problems]

 As shown in the drawings, the arm ring with a magnet of the present invention forms an open ring by placing a magnet (4) in the middle of a tube (1) made of copper or brass, and forming an open ring at both ends of the tube. Balls (2, 2) made of brass and having a recess on the inner surface of the ring are provided, the entire surface is plated with precious metal (3), and magnets (5, 5) are embedded in the recesses of the ball.

The tube (1) made of copper or brass preferably has an outer diameter of 4 mm inside and outside and a wall thickness of about 0.5 mm.

The magnet may be arranged inside the tube by attracting and guiding it from the outside of the tube with another magnet to move it to a predetermined position. The magnet can then be fixed in place by applying a drop of adhesive. The number of magnets placed inside the tube can be increased to two or more if desired. It is preferable that the magnet is strong, but if it is too strong, it may affect the recording on the floppy disk, so it is advisable to use a ferrite magnet in consideration of the price. In that case, a magnetic flux density of 2,000 G or more, preferably about 2,500 to 3,500 G is used.

The method of joining the tube and the sphere is arbitrary, by pushing the end of the tube into the hole provided in the sphere, cutting both of them, and adhering by screw engagement, brazing, and energizing after pushing. Welding, etc. can be adopted. It is preferable to perform brazing so that a gap is not partially formed between the ball and the tube and that the subsequent plating is preferably performed.

The plating can be done according to known techniques. Typical noble metals forming the surface plating layer (3) are 18 gold, 24 gold, platinum and silver. In addition to these, the above alloys of precious metals are of course also useful, and alloys containing rhodium can also be used. The plating thickness is selected from the range of 5 to 200 μm. Normally, a thickness of 10 μm is sufficient, but a thickness of 100 μm or more and 150 μm or more is desired to obtain a solid texture. In that case, plating may be performed by the electroforming method.

The magnet is placed in the recess of the sphere by adhesion.

[0010]

[Function and effect of device]

 Regarding the magnet contained in the arm ring of the present invention, the existence inside the tube is not completely visible from the outside, and the part inside the sphere is almost invisible because it is also embedded inside. Therefore, this magnet bracelet has the same appearance as a normal bracelet and is beautiful. Elegant and luxurious made of precious metal. Moreover, the magnet is located close to the arm, and the magnets (5, 5) of the two cylinders inside the sphere and the magnet (4) inside the tube respond to each other, so that the action is surely obtained. .

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a magnet-containing arm ring of the present invention.

FIG. 2 is a plan view of the arm ring of FIG.

FIG. 3 is an enlarged cross-sectional view of a sphere portion of FIG.

[Explanation of symbols]

 1 tube 2 ball 3 plating layer 4,5 magnet

Claims (3)

[Scope of utility model registration request] 1. A surface of a tube (1) made of copper or brass, in which a magnet (4) is placed in the middle, to form an open ring, and the ends of the tube being made of copper or brass and facing inward of the ring. An arm ring with a magnet, in which a sphere (2, 2) having a recess is provided, a noble metal is plated (3) on the whole, and a magnet (5, 5) is embedded in the recess of the sphere. 2. The noble metal forming the plating layer is 18
-24 The magnet-containing arm ring of claim 1, wherein gold, platinum or silver is used. 3. The arm ring with a magnet according to claim 1, wherein a ferrite magnet having a residual magnetic flux density of at least 2,000 G, preferably 2,500 G or more is used as the magnet (4,5).