JPH01134331A - Lens with attracting tool - Google Patents

Abstract

PURPOSE:To prevent a lens from falling from clothes, a wall, etc., by providing an attracting tool which has a permanent magnet to the frame of a lens and attracting it to an attracted tool made of a ferromagnetic plate detachably through a hole and a projection. CONSTITUTION:The attracting tool B has the annular permanent magnet 3 with the hole 3a and the discoid ferromagnetic plate 4 and is fitted to the frame 1a which holds the plane lens through a couple of leg pieces 6a. The attracted tool A, on the other hand, is formed by providing the ferromagnetic projection 2a to the center part of the discoid ferromagnetic plate 2 and fitted to cloth D, a plate material, etc., on the opposite surface of the projection 2a. The attracting tool B of the frame 1a attracts the attracted tool A in a pocket of clothes so that the projection 2a enters the hole 3a, and then the lens is prevented from sliding out and falling unexpectedly when the user leans over or takes off the clothes.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a pair of suction devices using permanent magnets on the frame of a lens for near vision, far vision, or magnification.
This invention relates to a lens with an adsorption device that can be detachably attached to clothing or a wall.

(Prior art) Conventional magnifying glasses are used when characters, symbols, figures, etc. are too small to see, or near glasses and reading glasses are used when placed in a pocket or the like and placed on one eye as needed. It was common to have a frame with a handle,
Since the lens is made of glass and is relatively flat, there were some models that made the lens made of resin and shortened the handle of the frame so that it could fit in a pocket or the like, making it convenient to carry.

(Problem to be solved by the invention) However, since the lens surface is smooth, it is easy to slip, and when you take off your clothes or bend your body and look down, there is a problem that the lens may slip out of your pocket. There were cases in which one end or one end of the frame was pivoted to a cloth or leather case to prevent it from slipping out of the pocket, but since it was not attached properly to the pocket, it was impossible to sufficiently prevent it from slipping out. .

In addition, lenses that are hung on a wall or the side of a desk through holes provided in the lens frame are troublesome because the holes must be aligned with the hanging fittings.

(Means for Solving the Problems) The present invention was provided to solve the above-mentioned problems, and an adsorption tool B having a permanent magnet 3 is attached to the frame la of a flat lens l having a frame 1a. A lens l is provided and is attracted to the target device A by the attraction tool B, the attraction tool B includes a permanent magnet 3 having a hole 3a extending from one magnetic pole surface a to the other magnetic pole surface, and one of the permanent magnets 3. a ferromagnetic plate 4 attached to the magnetic pole surface a of the ferromagnetic plate 4, which protrudes from the ferromagnetic plates 2.4 of both the attracting tool A and the attracting tool B, or the ferromagnetic plate 2 or 4 of either one. The ferromagnetic protrusions 2a and 4a are detachably attracted to each other or to either one of the ferromagnetic plates 2.4 through the holes 3a of the permanent magnets 3 of the attractor B. .

(Function) The lens with the suction tool configured as described above attaches the suction target AA to a pocket of clothes or other suitable part,
By adsorbing the suction tool B on the frame 1a of the lens 1, the lens 1 does not slip out. Further, removal is easy because it is attracted by magnetic force.

Further, the magnetic lines of force of the permanent magnet 3 form a magnetic circuit with both the elastic and magnetic plates 2.4 and the ferromagnetic protrusions 2a and 4a that abut within the holes 3a of the permanent magnet 3, and the lines of magnetic force are concentrated on the protrusions 2a and 4a. Therefore, it absorbs strongly.

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

■ is a flat convex or concave lens made of resin,
It has a frame 1a, and a suction tool B is provided on the frame la.

The suction tool B has a disk-shaped ferromagnetic plate 4 attached to the magnetic pole surface a of a top plate-shaped permanent magnet 3 having a hole 3a extending from one magnetic pole surface a to the other magnetic pole surface, and a disk-shaped ferromagnetic plate 4 attached to the magnetic pole surface a of a top plate-shaped permanent magnet 3 having a hole 3a directed from one magnetic pole surface a to the other magnetic pole surface. The permanent magnet 3 is inserted into an inverted dish-shaped non-magnetic case 5 having a hole 5a that communicates with the permanent magnet 3 with the magnetic pole face facing inward, and the permanent magnet 3 and A ferromagnetic plate 4 is held integrally with the ferromagnetic plate 4, and the ferromagnetic plate 4 has a ferromagnetic protrusion 4a whose one end is a small diameter scale part 4a'.
a'' into the hole provided in the ferromagnetic plate 4, the hole 3
The small diameter scale part 4a' is further inserted into a hole in the center of a washer 6, which has a pair of leg pieces 6a, 6a protruding from the opposing periphery, and its tip is caulked. B is attached to the frame la by making a hole in the frame la of the lens 1, passing the leg piece 6a through it, and folding the protruding end onto the surface of the frame la. 6゛ is frame 1a
This is a washer interposed between the surface of the leg 6a and the bent leg piece 6a.

The suction tool B is provided with the leg piece washer 6 as described above, and the leg piece 6a
As shown in Figure 3, the ferromagnetic protrusion 2a is provided with a small-diameter scale part 2a', and the frame 1a is inserted through it and caulked to the opposite side. In some cases, it may be bonded with adhesive. The suction target A, which is paired with the suction tool B, has a ferromagnetic protrusion 2a provided at the center of a disk-shaped ferromagnetic plate 2 by caulking, and a ferromagnetic protrusion 2a on the opposite side of the protrusion 2a of the ferromagnetic plate 2. It is attached to a cloth, board, etc. using leg pieces similar to those of the suction tool.

The suction target A also has a pin 7 by extending the small diameter scale part 2a' of the ferromagnetic protrusion 2a to the non-adsorption surface side of the ferromagnetic plate 2, or a spot, brazing, or other method on the non-adsorption surface. The pin 7 is welded or the ferromagnetic plate 2. In some cases, the pin 7 is formed integrally with the protrusion 2a, the pin 7 is pierced through the fabric, etc., and the protruding pin 7 is fixed by a conventionally used pin locking device C as shown in FIG. Further, as shown in FIG. 6, there is a case where the pin 7 is used as a screw leg 8 made of a wood screw and is screwed into a plate shape such as a wall D''.

The suction device A and the suction device B installed in this way are such that the ferromagnetic plate 2 is attracted to the ferromagnetic projection 2a on the side facing the magnetic pole of the suction device B, and the ferromagnetic protrusion 2a is attracted to the ferromagnetic projection 4a in the hole 3a, and the lens l The ferromagnetic protrusions 2a and 4a are detachably fixed to the cloth D of clothing, the plate material of the wall D°, etc., and only the ferromagnetic protrusion 4a of the suction tool B is attached as shown in FIG. 7(a). In the case where it is provided and directly attracted to the ferromagnetic plate 2 (the periphery of the attraction surface of the ferromagnetic plate 2 is formed into a protruding edge to prevent the attraction position from shifting)
Conversely, there are cases where only the ferromagnetic protrusions 2a are provided and are directly attracted to the ferromagnetic plate 4, as shown in (b).

In addition, when the suction tool B is covered with the case 5 on the side facing the magnetic pole as shown in FIGS. 1, 7, etc., the case 5 is a short cylinder as shown in FIG. 8(a). When the magnetic pole face is exposed, the bottom of the case 5 is in the shape of an inverted dish, as shown in FIG. 8(b).

That is, the peripheral edge of the surface on the facing side of the magnetic pole is formed into a protruding peripheral edge 5C, which prevents the suction position of the suction target A from shifting, and also prevents the protrusion when a magnetic recording object such as a cash card accidentally comes into contact with the magnetic pole face. In some cases, the peripheral edge 5C is used to prevent close contact with the magnetic pole face to prevent the negative influence of magnetism on magnetic recording.

Figure 9 shows various embodiments of the magnetically shielded type suction tool B. Figure (a) shows a magnetic shield plate 9 of ferromagnetic nature interposed between the case 5 and the magnetic pole face, and the magnetic shield plate 9 of the case 5. (b) is a case in which the circumferential edge of a magnetic shield plate 9 attached to the side facing the magnetic pole is locked by a cylindrical case 5, and (c) in the same figure has a protruding peripheral edge 5C attached to the side facing the magnetic pole. A magnetic shield plate 9 is attached to the magnetic pole face by molding to prevent the magnetic properties of the magnetic pole face when not attracted.

In FIG. 10(a), the permanent magnet 3 is a plastic magnet molded from synthetic resin containing hard magnetic powder, the case 5 is omitted, and the ferromagnetic plate 4 is embedded in the magnetic pole face a side of the permanent magnet 3. 9(C) also uses a plastic magnet, and FIG. 10(b) has a protruding peripheral edge 3b made of the plastic magnet itself formed on the magnetic pole face.

(Effects) Since the lens with suction device according to the present invention is constructed as described above, the suction device, which is paired with the suction device provided on the frame of the lens for myopia, hyperopia, or magnification, can be attached to clothes, shirts, walls, etc. ,
By attaching the lens to a desk or other surface, the lens can be detachably adsorbed, making it extremely easy to use and dispose of the lens after use, and there is no risk of loss.

In particular, by attaching a suction device inside the pocket of clothes or a shirt and adsorbing the lens, it will not fall accidentally when the body is tilted or clothes are taken off. As it has a pin, the suction target itself can be attached to and detached from clothing using a pin locking device, which is convenient because it can be removed when changing clothes or washing clothes.

In addition, since the pair of suction devices form a magnetic circuit that concentrates on the ferromagnetic protrusions that are attracted within the holes of the permanent magnets, the attraction force is large compared to the size of the suction devices. FIG. 2 is a perspective view of the attached lens, FIG. 3 is a perspective view of another embodiment, FIG. 4 is a sectional view of an embodiment of the attachment part of the suction tool, and FIG. 5 is a perspective view of the attached lens. FIG. 6 is a front view of an embodiment in which a fixture is used, FIG. 6 is a front view of an embodiment in which the suction target is provided with a screw leg, and FIG. 7 is a cross section of another embodiment of a pair of suction tools and a suction target. Figures 8 to 1θ
The figures are cross-sectional views of various embodiments of the suction tool.

A...Adsorbed tool, B...Adsorption tool, C...Pin locking tool, D...Fabric, l...Lens, 2.4...Ferromagnetic plate, 2a, 4a. ...Ferromagnetic protrusion, 3...Permanent magnet, 3a...Hole, 5...Case, 6, 6'...Washer, 6a...Leg piece, 7...Bin, 8...・Twisted leg, 9
...Magnetic shield plate.

Figure 8 (a)(b) Figure IQ Figure q (C)

Claims (1)

[Claims] A flat lens having a frame, the frame of which is provided with an adsorption device having a permanent magnet, and the adsorption device adsorbs to an adsorbed device, the adsorption device directed from one magnetic pole surface to the other magnetic pole surface. The magnet is made up of a permanent magnet having a hole and a ferromagnetic plate attached to one of the magnetic pole faces, and is protruded from both the ferromagnetic plates of the attracting tool and the attracting tool, or from either one of the ferromagnetic plates. A lens with an adsorption device, characterized in that the ferromagnetic protrusions are removably adsorbed to each other or to either one of the ferromagnetic plates through the holes of the permanent magnets of the adsorption device.