DE1204107B - pen - Google Patents

Description

Ballpoint pen The invention relates to a ballpoint pen with a replaceable Ballpoint pen refill in a particularly simple design.

In the previously known simple ballpoint pens with exchangeable ballpoint pen refills, the length of the shaft is kept greater than the length of the refill tube, ie. That is, the ballpoint pen refill is inserted into the holder shaft. For maintaining and securing the pen refill within the pen shaft special clamping devices are provided, but are usually found in the front quarter or in the shaft closing piece, rare within the stem bore.

In a special version of this type of ballpoint pen becomes a ballpoint pen refill with a flexible plastic tube that is slightly longer than the Removal of the two stops held in the ballpoint pen shaft, used whereby the plastic tube is slightly bent to the side when the shaft sleeve is screwed together and is immovably stuck in the axial direction by the suspension.

All of these embodiments consist of several individual parts that must be assembled during assembly, and also have a complicated and long writing instrument shaft. As a result, these pens come out proportionately expensive.

The invention has now set itself the task of providing a particularly favorable one and to create cheap type of ballpoint pens with replaceable ballpoint pen refills. This is achieved in the ballpoint pen mentioned at the outset by virtue of the fact that according to the invention on the slightly curved in the tension-free state, preferably made of metal manufactured ballpoint pen refill a shaft of such a length and so attached is that only part of the ballpoint pen refill is covered by the shaft and the back from the shaft protruding ballpoint pen refill serves as a shaft, the attachment of the shaft on the ballpoint pen refill solely through the resilient clamping of the cocked one Ballpoint pen refill takes place within the straight bore of the shaft.

To protect the pen tip when not in use, a protective cap can be placed on the tip of the ballpoint pen in the usual way, which then on the protruding from the fore-end, free rear end of the Ballpoint pen refill can be repositioned, or the fore-end is given a cylindrical one Recess in which the writing tip after repositioning the ballpoint pen refill can be made to disappear. These two embodiments are special to choose from the usual stick leads with a conical writing tip. With the latter The cylindrical recess can also be implemented with a removable intermediate piece can be added.

With ballpoint pen refills with a collar on the lead tube, as is generally the case are used for ballpoint pens, the clip-on barrel is made in two parts executed that the federal government comes to lie within the partial area, the parting line is set up so that after the ballpoint pen refill has been repositioned, the writing tip lies within the fore-end. Preferably at the writing end of the slip-on shaft provided a displaceable sleeve, which by means of the ballpoint pen refill something can be pushed forward and then the writing tip of the then again retracted ballpoint pen refill.

The plug-on shaft is preferably made of a plastic, in particular made of injectable plastic.

In the drawing, some exemplary embodiments of the subject matter of the invention are shown and then described in more detail. It shows F i g. 1 shows a ballpoint pen with a plug-in ballpoint pen refill according to the invention in a longitudinal section, the shaft having a recess, FIG . 2 shows another embodiment of such a ballpoint pen with a triangular fore-end and a removable tip protection cap, FIG. 3 shows an embodiment of the ballpoint pen according to the invention with a collar ballpoint pen refill and a two-part shaft, FIG . 4 the subject of FIG. 3 with repositioned ballpoint pen refill, F i g. 5 shows an embodiment similar to FIG. 1, but with an exchangeable intermediate piece, F i g. 6 the subject of FIG. 5 with repositioned intermediate piece, FIG . 7 shows a ballpoint pen according to the invention with a feed sleeve for plug-in ballpoint pen refills, FIG . 8 the subject of FIG. 7 with advanced feed sleeve, FIG. 9 shows a ballpoint pen according to the invention with a feed sleeve for ballpoint pen refills, FIG . 10 the subject of FIG. 9 with advanced feed sleeve.

The ballpoint pen according to FIG. 1 consists of one of the usual ballpoint pen refills 1 with the conical ballpoint pen tip 1 ', onto which the shaft 2 is pushed. The round shaft 2 is tapered towards both ends and has a recess 3 at the rear end. The holding of the ballpoint pen refill 1 within the bore of the shaft 2 takes place in such a way that the ballpoint pen refill 1 is slightly bent, whereby an intensive clamping within the shaft bore is achieved. The pen is drawn in the form shown in the writing position. When the writing instrument is not in use, the ballpoint pen tip is protected by repositioning the shaft so that the ballpoint pen tip l! rests within the recess 3 of the shaft 2.

The ballpoint pen design according to FIG. The basic design of 2 corresponds to the design described above, only the recess at the end of the shaft has been omitted. The shaft 4 is triangular, but the edges are slightly rounded. To protect the ballpoint pen tip 1 ' , a protective cap 5 made of elastic plastic is attached, which advantageously snaps into the groove of the ballpoint pen tip I'. When writing, the protective cap 5 is attached to the rear end of the ballpoint pen refill 1 protruding from the shaft 4. This position of the protective cap 5 is shown in the drawing F i g. 2 indicated by dashed lines.

When using normal retractable ballpoint pen refills which have a collar 9 on the ballpoint pen refill 6 , the shaft 7, 8 according to FIG. 3 advantageously carried out in two parts. The collar 9 of the ballpoint pen refill 6 is arranged within the parting line in such a way that it simultaneously offers the ballpoint pen refill a hold against axial displacement. The joining of the two parts 7 and 8 of the shaft is carried out in a simple manner so that one part, for. B. the part 8, a cylindrical extension 8 ' and the other part 7 has a corresponding recess 7' . By repositioning the two parts 7 and 8 , according to FIG. 4 the ballpoint pen tip 6 ′ to lie within the shaft part 8.

The F i g. 5 shows an embodiment similar to FIG. 1, only a tip-shaped intermediate piece 11 is inserted within the recess of the shaft 10. After removing the intermediate piece 11 from the shaft 10 , the ballpoint pen refill 1 can be withdrawn, whereupon the intermediate piece 11 according to FIG. 6 is put back on. In order to enable the intermediate piece 11 to be pulled off and attached without removing the ballpoint pen refill 1 , the intermediate piece 11 can be made of an elastic plastic and slotted in the longitudinal direction. In this embodiment, it is then easily possible to pull it off the ballpoint pen refill 1 from the side.

In the case of the in Fig. 7 , a longitudinally displaceable feed sleeve 12 is provided at the front end of the shaft 10 ' , which surrounds the writing tip I' of the ballpoint pen refill 1 on the outside with a conical bead. A cylindrical intermediate sleeve 13 is inserted between the feed sleeve 12 and the ballpoint pen refill 1. If the writing tip of this ballpoint pen is to be protected, the plug-in ballpoint pen refill only needs to be pushed forward a little and then withdrawn again, whereby the position according to FIG . 8 is reached. The intermediate sleeve 13 prevents the ballpoint pen refill 1 from being pulled back too far. 7 , the feed sleeve 12 must be pushed back all the way.

This embodiment becomes even simpler using the ballpoint pen refills 6 with a collar 9 according to FIG. 9. The intermediate sleeve can be dispensed with here, since the collar simultaneously serves as a stop both for the writing position of the ballpoint pen refill and for the feed sleeve 15 . The F i g. 10 shows the ballpoint pen with the advanced feed sleeve 15 which covers the slender writing tip 6 '. For better resilience of the feed sleeve 15 within the enlarged bore of the fore-end 14, the sleeve 15 can be partially slit so that it rests resiliently within the bore. Preferably, a corresponding stop for the advanced position of the sleeve 15, for. B. a small collar which engages in a groove in the shaft bore is provided.

Claims (2)

1. A pen with a replaceable ballpoint pen refill, characterized in that the in the voltage-free state bit by curved, preferably metal-made pen refill (1, 6), a shaft (2; 4; 7.8; 10; lO ') of such Length and is attached in such a way that only part of the ballpoint pen refill. is covered by the shaft and the ballpoint pen refill protruding backwards from the shaft also serves as the shaft, the attachment of the shaft (2; 4; 7,8; 10; 10 ') to the ballpoint pen refill (1, 6) solely through the resilient clamping of the cocked ballpoint pen refill (1, 6) takes place within the straight bore of the shaft. 2. Ballpoint pen according to claim 1, characterized in that a cylindrical recess (3) for receiving the ballpoint pen tip (Y) is provided at one end of the clip-on shaft (4) when the ballpoint pen refill (1) is moved into the rest position. 3. Ballpoint pen according to claim 1, characterized by a protective cap (5) made of elastic plastic which can be slipped onto the ballpoint pen tip (Y) and can be reversed onto the free rear end of the ballpoint pen needle (1). 4. Ballpoint pen according spoke 1, characterized in that the attachable shaft (7, 8) for receiving a ballpoint pen refill (6) with a collar (9) is in two parts and of such a form that the collar comes to lie within the partial area and when Repositioning the ballpoint pen refill (6), the ballpoint pen tip (6 ') is protected within one shaft part (8). 5. Ballpoint pen according to claim 2, characterized in that a removable intermediate piece (11) is inserted into the recess of the attachable shaft (10). 6. Ballpoint pen according to claim 5, characterized in that the removable intermediate piece (11) is made of elastic plastic and is provided with a continuous longitudinal slot. 7. Ballpoint pen according to claim 2, characterized in that in the recess of the attachable shaft (10 ', 14) a longitudinally displaceable feed sleeve (12, 15) and in particular an intermediate sleeve (13) is provided in the case of plug-in leads. 8. Ballpoint pen according to spoke 7, characterized in that the feed sleeve (12, 15) is slotted in the longitudinal direction to achieve a resilient frictional connection within the bore of the attachable shaft (10 ', 14). 9. Ballpoint pen according to spoke 7 or 8, characterized in that the feed sleeve (12, 15) has a bead and the bore of the attachable shaft (10 ', 14) has a groove or similar forms of construction as a stop to limit the feed movement. 10. Ballpoint pen according to one or more of the preceding claims, characterized in that the slip-on shaft (2; 4; 7,8; 10; 10 ') is made of a plastic, in particular injection-molded plastic. Publications considered: German utility model No. 1685 230.