DE1201209B - Ballpoint pen with replaceable ballpoint pen refill and multi-part barrel - Google Patents

Description

Ballpoint pen with replaceable ballpoint pen refill and multi-part Shaft The invention relates to a ballpoint pen with a replaceable ballpoint pen refill, in which the shaft consists of several shaft parts lying one behind the other in the longitudinal direction or shaft elements.

Ball points are already known in which the shaft consists of two Parts, a shaft front part and shaft back part, consists. With these pens the mine is usually after the two shaft parts have been screwed apart inserted from the back into the front part of the shaft and through the end stop of the mine held in the back of the shaft.

Nor is it new to writing implements, especially ballpoint pens, assemble from individual writing elements by plugging them together, each Writing element represents a complete writing implement correspondingly short length.

With these writing implements, however, there is only an insufficient hold of the individual writing elements are present on each other, which is why during the writing process As a result of the bending of the writing instrument, loosen the jacks and gradually a relatively short period of use the individual parts fall apart.

Another already known suggestion is for lead or Color lead pencils to attach individual conical shaft elements to the lead one behind the other and to be connected to one another by threads, the conical parts of these shaft elements when tightening the thread on the lead. As with these pens after copying the lead part protruding from the shaft, always the front one The shaft element must be unscrewed and screwed back on at the rear end, the use of these pens is very cumbersome.

The invention has now set itself the task of a ballpoint pen to create, in which the ballpoint pen shaft consists of individual shaft elements, but the disadvantages described above, namely the insufficient cohesion and the cumbersome assembly of the shaft elements can be avoided.

This is achieved with the ballpoint pen mentioned above by that the shaft elements of a ballpoint pen refill preferably formed as a plug-in refill are held together by the fact that the shaft elements attached to the lead between a widened approach of the writing tip and one at the end of the lead tube clampable shaft locking element are held positively and non-positively. That For this purpose, the shank connection element has in particular a pin with an external thread and cone part on which an end piece is screwed, whereby the cone pressed together and the ballpoint pen refill is held.

The individual shaft elements are an extension of the inventive concept provided with interlocking retaining claws, so that an additional hold of the individual shaft elements is guaranteed. These retaining claws can be both in the axial as well as in the radial direction of the shaft or in both of these Directions extend. With a radial arrangement of the retaining claws, these become somewhat guided over the center of the shaft hole receiving the pencil lead, whereby a particularly good hold is achieved.

A particular advantage of this pen version is that that the shaft of the ballpoint pen by appropriate choice of the number of shaft elements designed in different lengths and thus adapted to different lengths of ballpoint pen refills can be.

The design of the retaining claws of the individual shaft elements can thereby be designed in such a way that, apart from the shaft tip and shaft closing element, all shaft elements the same, so mutually interchangeable, are executed or that at least some the shaft elements only fit together in a certain order. In the case of the latter Execution can then also be the assembly of the shaft or the ballpoint pen can still be rated as a particularly interesting juxtaposition game. The single ones Shaft elements are then preferably kept different colors. In particular are the ballpoint pen parts or shaft elements made of plastic in the compression or injection molding process manufactured. In the drawing, two exemplary embodiments are shown the invention shown and explained in more detail below. It shows F i g. 1 one Ballpoint pen for a long ballpoint pen refill with five barrel elements and end piece, wherein the shaft elements have axially directed retaining claws, FIG. 2 one Cross section through the subject of FIG. 1 according to the section line 11-II, F i G. 3 the ballpoint pen of FIG. 1 after removal of a shaft element, whereby it is suitable for holding a shorter ballpoint pen refill, FIG. 4 a ballpoint pen with nine shaft elements and an end part for a long ballpoint pen refill, wherein the shaft elements have radially directed retaining claws, FIG. 5 the ballpoint pen the F i g. 4 after the removal of two shaft elements, which makes it suitable for receiving a shorter ballpoint pen refill and F i g. 6 a shaft element of the ballpoint pen according to FIG. 4 and 5 in perspective view.

The ballpoint pen shaft of FIG. 1 consists of the shaft tip element 3, the shaft elements 4 and the shaft closing element 5, these parts being threaded onto the lead tube of the ballpoint pen refill 1. The shaft tip element 3 sits on the shoulder of the conical writing tip 2 of the ballpoint pen refill 1. The shank connection element 5 has a pin with an external thread 7 which ends in a conical part 8. The conical part 8 preferably has one or more longitudinal slots 9 for better resilience in the radial direction. The inner wall of the cone part 8 is pressed against the end of the ballpoint pen refill 1 by the end piece 6, which has a corresponding internal thread and a matching internal cone, when it is screwed onto the shaft connection element 5 , whereby the whole pen is held together firmly.

The individual shaft elements have axially directed retaining claws 4 ', the cross-sectional shape of which is shown in FIG. 2 can be seen on. These holding claws 4 ' engage in one another, similar to a claw coupling, and give the ballpoint pen shaft a good hold.

By removing one or more shaft elements 4, the ballpoint pen shaft can be shortened so that it can be used to hold a shorter ballpoint pen refill. Thus, FIG. 1 shows a ballpoint pen with a ballpoint pen refill 1 of great length L and three shaft elements 4 and FIG. 3 a ballpoint pen with a ballpoint pen refill 1 ′ of shorter length 1 with two shaft elements 4.

The in the F i g. 4 consists of the ballpoint pen refill 1 with the ballpoint pen tip 2 and the shaft elements 10 to 18, the shaft locking element 18 being similar to the embodiment according to FIG. 1 is designed in cooperation with the end piece 6 as a clamping part. In contrast to the aforementioned embodiment, the shaft elements 10 to 18 have radially directed holding claws 12 ″, as can be seen from FIG. 6. These holding claws 12 ″ extend over the center of the bore 12 ', which is used to hold the ballpoint pen refill 1 . The assembly of the ballpoint pen according to FIG. 4 and 5 takes place in such a way that only the next shaft element is inserted and then the ballpoint pen refill 1 is pushed in by a corresponding amount.

After inserting the shaft locking element 18, the ballpoint pen refill is then used 1 completely inserted and the clamping by screwing on the end piece 6 and compilation of the whole pen achieved. The F i g. 4 shows here a ballpoint pen with a ballpoint pen refill 1 of relatively great length L and nine shaft elements, and the F i g. 5 shows the ballpoint pen with a Ballpoint pen refill 1 'of shorter length 1 after removal of the shaft elements 16 and 17. The shaft elements 10 to 15 are set up so that they are only in the Order 10, 11, 12, 13, 14 and 15 fit together while the stem connector 18 is designed with respect to the retaining claws that it is in the shaft element 15 fits. The ballpoint pen according to FIG. 4 and 5 for both longer and shorter ballpoint pen refills 1 or 1 'can be used, as well as interesting ones Serving jigsaw puzzle.

Claims (10)

Claims: 1. Ballpoint pen with replaceable ballpoint pen refill, in which the writing instrument shaft consists of several shaft parts or shaft elements lying one behind the other in the longitudinal direction, characterized in that the shaft elements (3 to 5 or 10 to 18) are supported by a ballpoint pen refill (1, 2) are held together in that the shaft elements (3, 4 or 10 to 15 or 17) attached to the ballpoint pen refill (1, 2) can be clamped between a widened approach of the writing tip (2) and one at the end of the ballpoint pen refill (1) Shank closure element (5 or 18) are held positively and non-positively. 2. Ballpoint pen according to claim 1, characterized in that the shaft elements (3 to 5 or 10 to 18) are provided with interlocking retaining claws (4 'or 12 "), so that an additional hold of the individual shaft elements (3 to 5 or 10 to 18) is guaranteed. 3. Ballpoint pen according to claim 1 or 2, characterized in that the holding claws (4 ') are the Shaft elements (3 to 5) extend in the axial direction of the writing implement. 4. Ballpoint pen according to claim 1 or 2, characterized in that the holding claws (12 ") of the shaft elements (10 to 18) extend in the predominantly radial direction of the writing implement. 5. Ballpoint pen according to claim 4, characterized in that the radial retaining claws (12 ") of the shaft elements (10 to 18) are designed so that they extend over the center of the bore and thus the shaft elements after insertion of the ballpoint pen refill a particularly favorable hold give. 6. Ballpoint pen according to one or more of the preceding claims, characterized in that the shaft elements (1 to 5 or 10 to 18) are fitted into one another so that different shaft lengths for using ballpoint pen refills of different lengths (L or l) can be achieved. 7. Ballpoint pen according to claim 6, characterized in that the shaft closure element (5 or 18) has a pin with external thread (7) and a cone part (8) on which a closure piece (6) is screwed, whereby the cone is compressed and the Ballpoint pen refill (1) is held. B. Ballpoint pen according to Claim 7, characterized in that the conical part (8) has one or more longitudinal slots (9) for better resilience. 9. Ballpoint pen according to one or more of the preceding claims, characterized in that at least some of the preferably different colored held shaft elements (3 to 5 or 10 to 18) are designed so that they only fit together in a certain order. 10. Ballpoint pen according to one or more of the preceding claims, characterized in that the ballpoint pen parts or shaft elements are made of plastic by pressing or injection molding. Publications considered: German utility model No. 1761928; British Patent Nos. 302 836, 510 649.