CN1817660A

CN1817660A - Magnetic pen

Info

Publication number: CN1817660A
Application number: CN 200610057801
Authority: CN
Inventors: 李振华
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-02-27
Filing date: 2006-02-27
Publication date: 2006-08-16

Abstract

A magnetic pen able to generate fine tracing on the magnetic writing board is composed of pen holder, magnetic pen tip and a sleeve iron tube of pen tip for gathering the magnetic force lines generated by pen tip.

Description

A kind of magnetic pen

Technical field:

The present invention relates to the culture and education product technical field, write 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 patent of invention 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 by this invention 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 present invention 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 present invention 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 present invention is exactly the diameter that need not less nib, so just can guarantee that the intensity of nib can not reduce.The present invention compares 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 present invention 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 a structural representation of the present invention;

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

Fig. 5 is the magnetic field design sketch of nib of the present invention.

The specific embodiment:

See Fig. 3,4, the present invention includes: 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, among the present invention, 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.

The most outstanding improvement of the present invention is exactly the diameter that need not less nib 2, so just can guarantee that the intensity of nib 2 can not reduce.The present invention compares 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 present invention 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.

Claims

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).

4, a kind of magnetic pen according to claim 1 is characterized in that: described nib (2) is one section cylinder, and the sleeve pipe (3) that adopts ferrous material to make is fixed on penholder (1) end with nib (2).