DE2209509B1

DE2209509B1 - Exchange pen

Info

Publication number: DE2209509B1
Application number: DE19722209509D
Authority: DE
Inventors: Guenther 7742 St. Georgen Schmidt
Original assignee: Gebrueder Schmidt Fabrik fuer Feinmechanik GmbH and Co KG
Current assignee: Gebrueder Schmidt Fabrik fuer Feinmechanik GmbH and Co KG
Priority date: 1972-02-29
Filing date: 1972-02-29
Publication date: 1973-07-26
Also published as: DE2209509C2

Description

Zum bequemeren Betätigen der Schreibspitze kann diese nach einem weiteren Vorschlag der Erfindung For more convenient operation of the writing tip, this can be done after a further proposal of the invention

eine R.indelt"zg trageii, die in Scllreibstcllung des Drehbleistifteinsatzes wenigstens teilweise aus dem vorderen Ende des Gehäuses herausragt.a R.indelt "zg trageii, which is in the writing position of the mechanical pencil insert at least partially protrudes from the front end of the housing.

An Hand der Figuren wird ein ALISfiilll ungsbeispiel der Erfindung nähcr erläutert. Es zeigt F i g. 1 einen schematischen Axialschnitt durch den erfi ndungsgemäßen Mehrfarbenkugelschreiber und F i g. 2 eine vergrößerte Seitenansicht des erfindungswesentlichen Teils des in Fig. 1 schematisch gezeigten Drehbleistifleinsatzes. An ALIS filling example of the invention is illustrated using the figures explained in more detail. It shows F i g. 1 shows a schematic axial section through the erfi nd according to the multicolor ballpoint pen and FIG. 2 is an enlarged side view the essential part of the invention of the mechanical lead insert shown schematically in Fig. 1.

Im Gehäuse 10 des Mehrfarbenkugelschreibers sind mehrere Kugelschreiberminen 12 mit unterschiedlichen Farben angeordnet. von denen in F i g. 1 nur eine zu sehen ist. Jede Mine 12 sitzt in einem Minenträger 14, dessen rückwärtiger Teil 16 von einer Rückhol-Schraubenfeder 18 umgeben ist, die an einem Gehäuseeinsatz 20 abgestützt ist. Im rückwärtigen Ende des Gehäuses 10 sitzt ein Drücker 22 mit einer bekannten Herzkurvenmechanik 24. Der Drücker 22 wird durch eine an einem Gehäuseeinsatz 26 abgestützte Druckfeder 28 nach außen gedrückt. An seinem vorderen Ende sitzt gelenkig eine Pendelstange 30, welche in unbelastetem Zustand durch Neigen des Gehäuses 10 über das rückwärtige Ende eines beliebigen Minenträgers 14 gebracht werden kann. Beim Eindrücken des Drückers 22 wird die zugehörige Mine 12 sodann in Schreibstellung vorgeschoben und durch die Herzkurvenmechanik 24 der Drücker in dieser Stellung verrastet. Beim abermaligen Betätigen des Drückers 22 löst sich die Herzkurx enmechanik und die Jedem 18 und 28 schieben Mine und Drücker wieder in die Ausgangsstellung zurück. In the housing 10 of the multi-color ballpoint pen there are several ballpoint pen refills 12 arranged with different colors. of those in Fig. 1 only see one is. Each mine 12 sits in a mine carrier 14, the rear part 16 of which a return coil spring 18, which is supported on a housing insert 20 is. In the rear end of the housing 10 sits a pusher 22 with a known one Heart cam mechanism 24. The pusher 22 is attached to a housing insert 26 supported compression spring 28 pressed outward. At its front end sits articulated a pendulum rod 30, which in the unloaded state by tilting the housing 10 can be brought over the rear end of any mine carrier 14. When the pusher 22 is pressed in, the associated mine 12 is then in the writing position advanced and through the heart cam mechanism 24 the pusher in this position latched. When the trigger 22 is pressed again, the Herzkurx enmechanik is released and everyone 18 and 28 push the mine and pusher back into the starting position return.

Erfindungsgemäß ist in einen derartigen Mehrfarbenkugeischreiber, in welchem die vlinen 12 und die Minenträger 14 gegen eine Drehung um ihre Längsachse nicht festgehalten sind. ein allgemein mit 32 bezeichneter Drehblcistiíteinsatz eingefügt. welcher statt einer Mine 12 in einen der Minenträger 14. 16 eingesetzt ist. Er wird daher in der gleichen Weise durch den Drücker 22 und die Pendelstange 30 betätigt wie die Kugelschreiberminen. According to the invention, in such a multicolor ballpoint pen, in which the vlinen 12 and the mine carrier 14 against rotation about their longitudinal axis are not recorded. a general with 32 designated rotary valve insert inserted. which is inserted into one of the mine carriers 14, 16 instead of a mine 12. He will therefore actuated by the pusher 22 and the pendulum rod 30 in the same way like the ballpoint pen refills.

Der Drehbleistifteinsatz 32 besteht, wie im einzelnen aus F i g. 2 ersichtlich, aus einem einerseits mit dem Ansatz 50 und andererseits mit einer gerändelten Schreibspitze 34 starr verbundenen Minenrohr 36, einer das Minenrohr 36 eng umgebenden Schraubenfeder 38 mit großer Steigung, der im Innern des Minenrohrs angeordneten Bleistiftmine 40 und einem am rückwärtigen Ende der Bleistiftmine 40 anliegenden, ebenfalls im Innern des Minenrohrs 36 angeordneten Minenschieber 42. Die Schraubenfeder 38 ist um das Minenrohr 36 drehbar angeordnet. Das Minenrohr 36 weist einen vom Ansatz 50 bis zur Schreibspitze 34 durchgehenden Längsschlitz 44 auf, durch welchen zwei radiale Vorsprünge 46 des Minenschiebers 42 jeweils zwischen zwei Windungen der Schraubenfeder 38 nach außen ragen. The mechanical pencil insert 32 consists, as in detail of FIG. 2 can be seen from a on the one hand with the approach 50 and on the other hand with a knurled writing tip 34 rigidly connected lead tube 36, one of the lead tube 36 tightly surrounding helical spring 38 with a large pitch inside the mine tube arranged pencil lead 40 and one at the rear end of the pencil lead 40 abutting mine slide 42, also arranged in the interior of the mine tube 36. The coil spring 38 is rotatably arranged around the lead tube 36. The mine pipe 36 has a longitudinal slot extending from the attachment 50 to the writing tip 34 44 through which two radial projections 46 of the mine slide 42 each between two turns of the coil spring 38 protrude outward.

Das hintere Ende der Schraubenfeder 38 ist vom Minenrohr 36 radial nach außen gezogen und zu einem hakenartigen Anschlag 48 umgebogen. Die Länge dieses hakenartigen Anschlages 48 ist so gewählt. daß er bei Drehung des Minenrohrs, wobei durch Reibung zunächst die Schraubenfeder 38 mit dem Anschlag 48 mitgenommen wird, an einer benachbarten Kugelschreibermine 12 oder an der Innenwand des Gehäuses 10 anliegt und eine weitere Drehung der Schraubenfeder 38 verhindert. Dadurch gleiten die Vorsprünge 46 in den Windungen der Schraubenfeder relativ zum Minenrohr 36 und schieben die Bleistiftmine 40 vor. Umgekehrt ist auch ein Zurückdrehen des Minenrohrs 36 und ein gleichzeitiges Zurückschieben des Minenschiebers 42 möglich. The rear end of the coil spring 38 is radial from the lead tube 36 pulled outwards and bent over to form a hook-like stop 48. The length of this hook-like stop 48 is chosen. that he turns the mine tube, whereby first of all the helical spring 38 is carried along with the stop 48 by friction, on an adjacent ballpoint pen refill 12 or on the inner wall of the housing 10 and prevents further rotation of the helical spring 38. Slide through it the projections 46 in the turns of the coil spring relative to the lead tube 36 and push the pencil lead 40 forward. The reverse is also true of turning back the mine tube 36 and a simultaneous pushing back of the mine slide 42 is possible.

so daß die Bleistiftmine 40 ins Innere der Schreibspitze 34 zurückgedrückt werden kann.so that the pencil lead 40 is pushed back into the interior of the writing tip 34 can be.

Claims

Claims: 1. Interchangeable pen with displaceable in a housing and ballpoint pen refills rotatable around their longitudinal axis and a lead insert, whose mine can be advanced by a screw mechanism that can be operated from the front can, characterized in that the lead insert (32) consists of one with one Longitudinal slot (44) provided, rotatable lead tube (36) and a helical spring (38) is surrounded with a steep slope that in the mine tube (36) a mine slide (42) is displaceable with at least one projection (46) through the longitudinal slot (44) protrudes and engages between two turns of the helical spring (38), and that the helical spring (38) protrudes perpendicular to the longitudinal axis of the mine tube (36), a rotation of the helical spring (38) preventing stop (48).

2. Exchange pen according to claim 1, characterized in that the stop (48) is formed from a bent end of the helical spring (38) is.

3. Exchange pen according to claim 2, characterized in that the bent-out end (48) is bent back like a hook.

4. Exchange pen according to one of claims] to 3, characterized characterized in that the length of the hook-like bent end (48) from the lead tube (36) is chosen so that when the lead tube is rotated, it is connected to an adjacent ballpoint pen lead (12) or on the inner wall of the housing (10) comes to rest.

5. Exchange pen according to one of claims 1 to 4, characterized characterized in that the writing tip (34) has a knurling.

The invention relates to an exchangeable pen in a housing displaceable and rotatable about their longitudinal axis arranged ballpoint pen refills as well a lead insert, the lead of which is operated by a screw mechanism that can be operated from the front can be advanced.

Mechanical pencil inserts for multi-color ballpoint pens are known per se. In these known inserts, a pencil lead contained in a sleeve with a screw mechanism, e.g. B. od a feed spindle. Like., Unscrewed will. Multi-color ballpoint pens are a prerequisite for inserting such mechanical pencil inserts with mines and mine carriers that cannot rotate about their longitudinal axis, otherwise the Screw mechanism for unscrewing the pencil lead would not be operable. However, this requirement is necessary for a large number of multi-color ballpoint pens not met, so that in these pens with arranged rotatable about their longitudinal axis Mines and mine carriers the well-known mechanical pencil inserts are not used can.

From the German patent specification 484 816 is a multi-color mechanical pencil known, in which the slotted lead pipe with a wire feed screw is surrounded, the lead tube Ulldrehbar with the other parts of the adjustment mechanism of the pen is connected, while the wire feed screw with a rotatable Knurled knob is firmly connected to the tip of the lead insert.

On the other hand, the present invention is intended to provide a multi-color ballpoint pen with mines rotatably arranged around their longitudinal axis and an additional one that is flawless operable mechanical pencil insert are created. This object is achieved according to the invention solved in that the lead insert from a provided with a longitudinal slot, rotatable mine tube and surrounded by a coil spring with a large pitch is that a mine slide is displaceable in the mine tube with at least one Projection protrudes through the longitudinal slot and between two turns of the helical spring engages, and that the coil spring is perpendicular to the longitudinal axis of the mine tube protruding, a rotation of the coil spring preventing stop.

Mechanical pencils are known which also have a slotted Mine tube, a helical spring that surrounds the mine tube and is rigidly inserted into the housing and a mine slide engaging between the turns of the coil spring exhibit.

However, these mechanical pencils are not readily available for the inventive Purpose applicable because neither the coil spring can be rigidly inserted into the housing the rotation of the mine tube can still be effected from the outside, as in the well-known mechanical pencils is the case. These are the rotation of the mine tube by a rigidly connected, protruding from the rear end of the housing Cap effects. Only through the provision of a manually rotatable writing tip on the front end of the lead tube and one the rotation of the coil spring when rotating the stop which prevents the mine tube can achieve the object of the invention will.

In a preferred embodiment of the invention, the stop is formed from a bent end of the coil spring itself. He can for example with a neighboring ballpoint pen refill or with a suitable stop in the Cooperate inside the housing to prevent rotation of the coil spring. The bent-out end of the helical spring can expediently be bent back like a hook so that when it is turned it encompasses the closest ballpoint pen refill and itself hooks firmly to this. Further rotation of the helical spring is then impossible. This allows the pencil lead to be pushed out by turning the nib. It is only necessary to ensure that the distance between the bent over like a hook The end of the coil spring of the lead tube is chosen so that it is when the lead tube is rotated engages with the neighboring ballpoint pen refill.

On the other hand, it is also possible to use the various embodiments to train such a stop so that they are on rotation of the mine tube come to a suitable stop inside the housing and thus a Prevent the coil spring from rotating.