DE6752003U - PEN FOR VERY THIN MINES - Google Patents

Description

"Pen for very thin mixes"

The hearing refers to a pen for thin hines, especially drawing leads, the diameter of which is less than 1.0 mm. Such mines, because of their low strength, are subject to both deployment and also when using them there is an increased risk of breakage »This applies above all to the advancement after the appropriate Wear of the front end of the iline protruding from the pen tip of the pen housing.

TJm breaks in the thin hips at the. Insertion, and to avoid during use, it is known to guide the hins inside the housing by various means _3, for example resilient sleeves, and ± n the writing tip

e: Provide a guide tube protruding from this tit. The lines are fed "with mechanical pencils moist by means of one or more clamping pliers or Feed drag sleeves, with the help of which the Hine each «SS sis bit is. YorsohubriGliiiuiig moved · isj um to be prevented from falling out by a brake. D: cuck pencils of the type mentioned above have emerged with regard to the risk of breakage and the advance of the,! • linen not proven

Pens with a twist mechanism, i.e. the Mines gradually advanced by turning a rotary link and by placing them on a solid surface can be pushed back are in terms of insertion disadvantageous new Hinen. As a rule, this insertion must go through the writing tip

'and in doing so it is difficult to find that

Introduce mines cleanly and reliably prevent them from breaking «.

In the case of a known thin-lead pen with a push-twist mechanism, these difficulties arise as a result

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tries, that one has a two-part case, a j & wide-part writing tip and a, firmly with a Gewiademuffe provided guide tube has provided.

After disassembling the pen in the protruding

The parts described can be used in the new mine in feed rate be inserted into the mine guide tube, iu which then threaded the push pin of the rotary push mechanism must become. This known pen is thus constructed in a very complicated way and requires a lot of work Operations when inserting new mines and brings the

I _I risk that the thin and naturally sensitive

The push pin is damaged, in particular bent, while it is outside the mine guide tube

The aim of the innovation is to create a pen for very thin leads with a rotary slide mechanism, the to avoid the disadvantages outlined above; is simple and a lot lighter Replacement of mines enabled

f ·· n

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It consists mainly in the fact that the seated in a shaft-like housing and by means of a rear Rotary knob-operated rotary push mechanism firmly with one, the push pin of the rotary push mechanism and the mine comprehensive guide tube is connected with his

lower part far into one, the outer diameter of the

Guide tube © 8 corresponding hole in the writing tip is visible.

Sa in this type of game 3rüiarüngS3? Öhr- of. Push pin always largely or completely covered _v the push pin against pre-bending or other damage ittt protected are installing new mines. " The new Hinen are slightly against the feed direction in the Fiihruagßrohr '\ pushed in fully retracted push pin and are there & urctt in joining the writing

. tip with the housing against the risk of breakage. Through this,

^: that the guide tube with its lower. Te.fl vjeit into a

their corresponding bore of the writing tip can be pushed into it

is, it is guided neatly in the center and lies beneath it no dangerous stresses »

It serves the same purpose that in further development of the ! Price increases the writing tip by means of a far into the Housing reaching approach, in particular Gewin.deansatzes can be connected, in particular screwed, to the housing.

It preferably contains the lower part of the guide tube

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receiving bore with one of j . For protruding lead guides, a writing tip made of elastic material "with a funnel-shaped discharge opening, to which the lower end of the guide tube comes close.

This partially known arrangement has the consequence that the writing lead is safe practically over its entire length is led and held.

Furthermore, both the housing of the Pen sls also the nib e ± part off): Lldet. As a result, the pen has a low mechanical effort and is quick and easy to dismantle and reassemble.

The pen according to the invention expediently has a tapered wallting of the housing and a tapered one Magazine for Ee serveminen, which is part of the rotary push mechanism «,

The following is a "Preferred Embodiment" example des Hßuerunn: describe on the basis of the drawing.

The pen illustrated in this longitudinal section -.reist on a one-piece shaft-like housing 1, in whose lower Eade a unitary writing tip 2 with a far into reaching thread on sat z 'j einschraubb & r · Ia upper 2? Eil of the housing 1 is located a turning and sliding mechanism 4 -., by means of a rüekw art strength knob 5 "to operate and is fixedly connected to a long, projecting from the housing bottom I'ührungsrohr 6" Ta this leads to that by which Srehschubmechanüc 4 up and down movable push pin 7, which "brings a thin, not shown lead, which can be inserted into the guide tube 6 from below, through the writing tip 2 into the writing position when it is pushed down.

The writing tip 2 is a downwardly protruding lead guide 8 with an outer diameter of the lead exactly corresponding inner diameter ^ o as a r, ach above Subsequent I-line brake ordered from elastic material, e.g. from foam rubber or foam plastic 9 with funnel-shaped inlet opening 10, which inserted into a relatively long widened © hole 11 is. This has an oa, the outer diameter of the guide tube 6 only slightly exceeding inner diameter " so that the! guide tube 6 natiber glcriteo? dn the hole 11 is retractable «,

The mine is "when moving downwards by the push pin 7," when moving back. by. AIIF encounter when retracted push pin 7, as well as "in writing and drawing" bit on a short distance between the Hinenbremse 9 »yd the lower end of the guide tube 6 is constantly over its entire length comprises, centrally guided and thus protected against breakage.

If it is used up, then the rest of it is down through the "Moved push pin 7 or di © from this in writing position spent new mine from the mines lead 8 pushed out.

In order to be able to use a new cinema, the writing tip Z is first unscrewed from the housing 1. Since now the thin and sensitive push pin 7 only with its bottom. Since it protrudes from the guide tube 6, the risk of bending is very low. In order to completely exclude this risk, the push pin 7 only needs to be completely withdrawn so that it is then protected against damage over its entire length by the guide tube 6.

Eaeh unscrewing the one-piece writing tip 2 from the one-piece housing 1 and after the getst necessary Complete return of the push pin 7 in its highest position it is only necessary that insert a new mine from below into the 3? ührung.r: year 6 and screw the writing tip 2 into the housing 1. Here the lower part of the guide tube slides 6 into the bore 11 of the writing tip 2 until it reaches the internal brake 9. The considerable length of the G-thread attachment 3 and the hole 11 of the writing tip 2 guarantee a clean, concentric sliding in of the lower part of the guide tube, it 6 generally the bore 11 of the writing tip 2.

Since between the Uandung of the housing 1 and the required part of the rotary thrust mechanism 4 as? ie d «? m Fühnangsrohr 6 a cavity 12 of an annular cross-section exists, this cavity can be called Hagazia can be used for replacement leads.

Claims (4)

. Pen for very thin leads, especially character leads, which by means of a Drehsohubmechanik, a Writing tip can be brought through into the writing pad are, characterized in that in a shaft-like Housing (1) sit and send by means of a rear Rotary knob it (5) attachable sliding screw mechanism (4) firmly with one, the push pin (7) of the Brehsehubmechanik (4) and the guide tube (6) surrounding the mine is connected, which with its lower part far into a, the outer diameter of the! guide tube (6) corresponding Bore (11) of the writing tip (2) can be inserted. 2. pen according to claim 1, characterized in that the writing tip (2) by means of a projection, in particular a threaded projection, which extends far into the housing (1) (5) connectable with the Geb '^ ee (l), in particular is screwable. Postal checking account: Karlsruhe 76979 · Bank account: Deutsche Bank AG. Villtngen 146 332 3. Pen according to claims 1 and 2, ö.adureh characterized in that the lower part of the]? ührungsrolires (6} receiving bore (ll) of the with an I-line guide protruding from it (8) provided writing tip (2) an elastic material existing mine brake (9) "Sit funnel-shaped Introductory opening (10) to which the ■ the lower end of the guide tube (6) comes close to it « 4. Writing pen according to claims 1 to 3 »thereby characterized in that the housing (1) and the writing tip (2) are in one piece. 5- pen according to claims 1 to 4, characterized characterized in that it has a through the wall of the housing (l) and a tapered part of the rotary thrust mechanism (4) has formed magazine (12) and the guide tube (6) for Heserveminen.