CN2887612Y - Magnetic pen - Google Patents

Abstract

The utility model relates to the technical field of culture and education products, especially relates to a magnetic pen that could slim the writing trail of the magnetic tablet. The pen includes a penholder and a pen nib that is made of magnetic materials and a socket is jacketed at the exterior of the pen nib. The utility model adopts such structure that a socket is jacketed at the exterior of the pen nib which is made of iron materials that can be attracted by magnet, usually adopting iron pipes. As the iron pipe has exerted centralized line of force to the magnetic field generated by the pen nib, the magnetic field scope of pen nib could be reduced, as well as the scope of the magnetic powder in the tablet is reduced, thus the slimmer writing trail could be generated.

Description

A kind of magnetic pen

Technical field:

The utility model relates to the culture and education product technical field, writes the magnetic pen that track is write in writing on the blackboard but refer in particular to a kind of refinement magnetic picture.

Background technology:

Magnetic is drawn and to be write plate is present a kind of family children teaching aid commonly used, and it is cheap, can use repeatedly and obtain large tracts of land and popularize and welcome widely.See Fig. 1,2, when using the magnetic picture to write plate 5, need to use magnetic pen 51.The end of this magnetic pen 51 has the nib 52 that a magnet is made.Picture is write the liquid that is perfused with magnetic in the plate.When writing, nib 52 magnetic draw write slip on the plate 5 after because the magnetic attraction effect, magnetic will be write at picture and will occur corresponding picture on the plate and write track 53.Generally, the thickness of nib 52 will determine picture to write the thickness of track.See Fig. 2, by nib 52 magnetic lines of force we as can be seen, the scope of nib 52 magnetic fields effects will far surpass the diameter of nib 52, so the track 52 that causes picture to be write will be far longer than the diameter of nib 51.For example, a kind of diameter is the nib of 2mm, and the track width after its picture is write can be considerably beyond 2 millimeters.Because the track broad is so just made troubles to the user, in writing the process of drawing, can't carry out meticulous delineating, can only carry out delineating of some coarse contour images.

See that China Patent No. is: the utility model patent specification of ZL89222012.0, it discloses a magnetic pen that has square magnetic head, it reduces picture and writes the area that the method for track is reduction nib end, but, owing to need to guarantee the intensity of nib, also can't adopt the way that reduces the nib diameter to come refinement to draw the track of writing.In addition, square nib can cause in the process of writing producing to be stagnated, and writes freely not suitablely, and scratches magnetic easily and draws the plate face of writing plate.

Summary of the invention:

Technical problem to be solved in the utility model just is to overcome the deficiency of present like product, provide a kind of under the prerequisite that does not reduce the nib diameter refinement draw the magnetic pen write track.

For solving the problems of the technologies described above, the utility model has adopted following technical scheme: the nib that it comprises penholder and adopts magnetic material to make is provided with a sleeve pipe in the outer cover of nib.

Described nib top has the tip that is polished into slick and sly shape.Nib polished to improve smooth degree when writing, be convenient to the user and use.

After the utility model adopted this structure, at the outside sheathed sleeve pipe of nib, this sleeve pipe must adopt the materials such as iron that can be attracted by magnet, can adopt iron pipe usually.Because the existence of iron pipe, it has the effect of the concentration magnetic line of force to the magnetic field that nib produced, and can reduce the sphere of action of nib end magnetic field, makes nib picture be write the scope that acts on of magnetic reduces in the plate, so just can produce thinner picture and write track.

The most outstanding improvement of the utility model is exactly the diameter that need not less nib, so just can guarantee that the intensity of nib can not reduce.The utility model is compared with the present product that adopts same thickness nib, be example for example with the nib product that adopts 2mm, the track width that the utility model is write is thinner by 100%～200% than present product, its effect is fairly obvious, and everything all is obtained on the basis that does not almost change production technology, specification, has higher technique effect.

Description of drawings:

Fig. 1 is the schematic diagram of present product;

Fig. 2 is the magnetic field design sketch of present product nib;

Fig. 3 is the utility model structural representation;

Fig. 4 is the partial enlarged drawing at A place among Fig. 3;

Fig. 5 is the magnetic field design sketch of the utility model nib.

The specific embodiment:

See Fig. 3,4, the utility model comprises: penholder 1 and the nib 2 that adopts magnetic material to make are provided with a sleeve pipe 3 in the outer cover of nib 2.Usually, penholder 1 can adopt plastic material to make, and nib 2 adopts magnet, and diameter can be between 1～3mm.And sleeve pipe 3 adopts ferrous material to make.For the ease of writing, nib 2 and sleeve pipe 3 tops have the tip 21 that is polished into slick and sly shape and carry out fillet.The tip 21 of nib 2 is stretched out by sleeve pipe 3, and the extension elongation of nib 2 must be very little, so just can reach effect preferably.

Referring to Fig. 5, in the utility model, because the existence of irony sleeve pipe 3, its magnetic field that nib 2 is produced has the effect of the concentration magnetic line of force, can reduce the sphere of action of nib 2 end magnetic fields, the scope that acts on that makes 2 pairs of pictures of nib write magnetic in the plate 4 reduces, and so just can produce thinner picture and write track 41.

Claims (3)

1, a kind of magnetic pen comprises: penholder (1) and the nib (2) that adopts magnetic material to make, it is characterized in that: the outer cover in nib (2) is provided with a sleeve pipe (3).

2, a kind of magnetic pen according to claim 1 is characterized in that: described nib (2) top has the tip (21) that is polished into slick and sly shape, and sleeve pipe (3) top is processed as fillet.

3, a kind of magnetic pen according to claim 2 is characterized in that: the tip (21) of described nib (2) is stretched out by sleeve pipe (3).

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