DE2222593A1 - TUBE PEN WITH INTERCHANGEABLE TIP - Google Patents

Description

"Tube pen with exchangeable writing tip"

The invention relates to a tube writer with a head piece whose lower end is one with an as Profiled collar with wrench flat, writing tip can be screwed in and the end used with its upper »to receive a writing medium cartridge into a holder shaft can be used, in particular screwed in ^, which is used for screwing in and Unscrew the nib with a key recess corresponding to the profiled collar of the nib is·

In such known tubelet pens with replaceable writing tip, which enables writing or drawing by using a stylus to vary it with a different tube diameter, the line thickness, is applied to the profiled, for example flattened collar, in general, a small corresponds

309847 / 01S0

ORlGlNALiNSPECTED

Appropriately designed key put on to screw the writing tip out of the head piece or into the head piece can. However, this known arrangement with a separate operating key has the disadvantage that often the one separate Actuating key representing part is misplaced or lost, so that it can be used in the event of a planned change of the writing tip is not immediately at hand.

In addition, it has already become known (compare For example, the German utility model 7 016 989), the key recess in the circular top surface to be provided at the upper end of the substantially cylindrical holder shaft, so that the holder shaft removed from the head piece can also be used as an operating key for the detachable writing tip.

With such an arrangement, due to the small, corresponding to half the diameter of the holder shaft, lever arm However, only a relatively small torque can be applied when loosening a writing tip, which is particularly important when it has dried out Writing fluid encrusted writing tips and wet fingers often leads to considerable difficulties

The invention is based on the object of providing a tube pen with a replaceable writing tip, in which the The holder shaft used as a captive key enables the writing tip to be operated particularly easily, even when it is jammed or encrusted threads.

309847 / Q1S0

To solve this problem, the initially mentioned type provided according to the invention that the key recess in the substantially cylindrical side wall of the holder is introduced. The inventive arrangement of the key recesses of the side wall of the When the key recess is placed on the profiled collar of the writing tip, the holder shaft runs along the holder shaft perpendicular to the axis of rotation of the writing tip, so that the length of the holder shaft acts as a lever arm.

The key recess in the holder shaft advantageously has an opening, preferably of the same shape, diametrically opposite _T, through which the front end protrudes when the holder shaft is placed as an actuating key on the writing tip.

The formation of this through opening for the front end of the writing tip as shaped similarly to the key recess The recess has the advantage that the holder shaft can optionally be placed on both sides as a key, which also has the advantage that if one of the key recesses is damaged or broken Another key recess is always available stands.

The key recess may be in embodiment of the invention in the lower region of the barrel may be arranged _$ in which the writing means cartridge protrudes, so that calibration of both a very

309847/0150

large lever arm results, as well as the ability to control the level the writing material cartridge can be conveniently monitored from the outside.

By providing several axially spaced key recesses in the holder shaft, which can optionally also have different shapes, so that they can be used to operate writing tips with different profiled collar can be used, there is the possibility of one of the recesses in the area of the to arrange the upper and the other in the region of the lower end of the writing medium cartridge, so that the filling level is continuous can be tracked

For this purpose it can be advantageous to use the key recess and / or to design the opening diametrically opposite it as an axial longitudinal slot which extends essentially over the entire length of the writing medium cartridge.

At this point, it should be pointed out that a key recess corresponding to the profiled collar of the writing tip is not to be understood as merely referring to such recesses are, the outlines of which correspond exactly to the circumferential shape of the federal government, but all recess shapes that when placed on the profiled collar can act as a key. For example, in the case of a hexagonal collar on the writing tip, the key recess can be both a corresponding hexagonal opening and a Longitudinal slot with a width corresponding to the distance between two opposite sides of the hexagon, or as equilateral triangular opening with three times the side length

3O9Ö47 / O1SO

With particular advantage there can be at least one key recess in the upper area of the holder shaft, above the egg-bearing writing medium cartridge, so that another similar tubular pen can be used to loosen the writing tip, i.e. the holder shaft needs to be removed at all. To even the Kon simultaneously trolls of the writing medium-sized businesses in the writing agent cartridge from outside control to könnea ₅ can DI® laordnuag be such "that several SeMüsselausaelimußgea are provided axially spaced from dasea wQnigstea® ice © B @" rich of einragenden SchreiiMittGlpatroB © uad wsaigstexis © ine above that of the writing material patroae arranged in the holder shaft 1st.

To a possible scratching of Aiiß®nflä, cli @ / ia way d © s fuel casting produced Halterschafta feoi latforaea & u w®Th ± nüern _t what recesses by burrs on the Formauemhmungen for AEIA key "might be the case, can ice ai @ Sohlüsaelaus This injection part, ie these egg-molded parts when several such cables are provided, “is placed in the corresponding mold” prior to the injection molding of the holder shaft.

The different colors of the spirit part and the holder offers the possibility of entering at the same time

309847 / 01.50 '

different tube pens according to the line width of their Writing tube, the color of the injection part advantageously matching the corresponding color of the writing tip.

The holder shaft kana advantageously has a substantially cylindrical, be off ice © sleeve on both sides, because of the arrangement of the Schliisselaussalimimg a cover surface in the side wall is not absolutely necessary.

Further advantages _P Merkmal® and details of the invention will become apparent from the description of a aaohfolgeiFlen Ausführungsbeispisls on Haed of Pigures the drawing. Show:

1 shows a view of a tubular pen according to the invention partially® in the cut,

Fig. 2 of the key placed on the writing tip partially broken cage,

3 is a pellet view in the direction of arrow P in FIG.

In the provided at the lower end with an internal thread head part 1 is a write "or drawing tip 2 can be screwed, while _f at the upper LBD @ be inserted into the one writing medium cartridge 3 k & SSN, a G '1st provided 4' wind t ABAC hai tt, using dessin d £ @ head piece 1 -la is a holder 5 tlnechraubb * r.

3098 ^ 7/0160

In the lower area, of the holder shaft 5 »in those built in the musam State of the writing medium cartridge 3 with a transparent Outer wall is provided, protrudes, two axially spaced hexagonal key recesses 6 and 7 are arranged, the hexagonal in shape and size as a key surface serving profiled collar 8 correspond.

Ben key recesses 6 and 7 are correspondingly shaped Recesses 9 and 10 opposite, through which dee when putting on Holder shaft as an actuating key on the writing tip 2, the writing tube 11 can protrude outwards,

Hit 12 is the tip of a common cleaning wire, which is connected to a drop weight that can be moved to a limited extent inside the nib.

The invention is not limited to the illustrated exemplary embodiment. Thus, in addition to a different ZaIiI ₃ arrangement and shape of the key recesses as well as the push-through openings opposite them for the lower end of the writing tip, it is also possible to slip the holder shaft onto a correspondingly designed barrel surface at the upper end of the head piece, instead of, as shown, to unscrew *

Finally, it would also be possible when manufacturing the holder shaft, especially by way of injection molding, the key recess to form a little too large and into this one

309847/0180

Color-contrasting insert part subsequently secured against rotation, for example clamping into place to use.

309847/015

Claims (9)

Claims 1. Tubular pen with a head piece, in the lower end of which a profilier with a serving as a key surface th covenant provided writing tip is screwed and that with its upper, for receiving a writing medium cartridge serving end can be inserted into a holder shaft, in particular screwed in, which is for screwing in and out provide the writing tip with a key recess corresponding to the profiled collar of the writing tip is, characterized in that the key key is exempt (6,7) is introduced into the essentially cylindrical side wall of the holder shaft (5) 2. Tube pen according to claim 1, characterized in that the key recess (6,7) in the holder shaft (5) an opening (9, 10), preferably of the same shape, is diametrically opposite. 3. Tube pen according to claim 1 or 2, characterized in that that the key recess (6,7) la lower region of the holder shaft (5) is arranged into which the Writing medium cartridge (3) protrudes. 4. Tube pen according to claim 3, characterized by the provision of a plurality of axially spaced-apart genes (6,7) in the holder shaft (5) 309847 / Ö1SÖ 5. Tube pen according to one of claims 1 to 4, characterized characterized in that at least one key recess in the upper region of the holder shaft, above the protruding Writing medium cartridge is arranged. 6. tube pen according to one of claims 1 to 5, characterized in that the key recess (6,7) and / or the opening (9, 10) diametrically opposite it is designed as an axial longitudinal slot ", 7 · Tube pen according to one of Claims 1 to 6, characterized in that the key recesses and the Insert part containing opposite openings is injected into the holder shaft, which is preferably of a different color is., 8. tube pen according to one of claims 1 to 6, characterized characterized in that in the recesses of the holder shaft a colored insert part, in particular resilient, can be clamped, the inner recess of which is the key recess forms. 9. tube pen according to one of claims 1 to 8, characterized in that the holding shaft (5) has a substantially cylindrical sleeve open on both sides. 309847/01 SO