DE2107803A1 - Writing utensils, in particular tube pens - Google Patents

Description

Writing utensil, in particular tube pen The invention relates on a writing instrument, in particular a tube pen, with a pen tip with a hole to hold the falling weight and a writing tube into which a hair wire attached to the lower end of the drop weight protrudes, as well as with an ink storage space connected to the bore at the upper end of the pen tip.

In the case of the previously known writing implements of this type, there was a drop weight from a cylindrical body, which in the rest position with the vertical position of the Device was due to gravity on a ring shoulder so that the tip of the Hair wire protruded from the bottom of the writing tube. Was using the writing instrument when the writing tube was placed on the pad, the Hair wire the falling weight upwards, so that it lifted off the ring shoulder and the The tip of the hair wire was level with the plane of the drawing.

When ink dried up in the writing tube and with it the flow of ink was obstructed, so the user could the dried ink particles through Shake the writing instrument in the axial direction, because this shaking movement the drop weight was moved back and forth and the hair wire moved in the writing tube.

The movement of the falling weight led in the axial direction.

to the fact that this hit the ring shoulder once and then in the other direction bumped against the drop weight safety device. This created jerky movements of the tip of the pen, causing ink to be thrown out. In addition, there is only one shaking movement running in the axial direction of the falling weight, it could happen that despite the movement of the writing implement Indian ink dried up in the writing tube because the hair wire did not move when was not written with the device.

It is therefore the object of the invention to create a writing instrument, in which the drying of ink in the writing tube is more reliably prevented and where in particular no in axial direction of the writing instrument running shaking movements are required to move the hair wire.

This task is performed in a writing instrument of the type mentioned at the beginning solved by a swinging movements of the falling weight and with it connected spring element, which has one end at one with respect to the falling weight stationary point is attached.

Through the use and special fastening of a spring element it is achieved that the falling weight and thus also the hair wire itself then in an axial direction Moved when the writing instrument itself moves in another direction Direction executes. For example, the falling weight can oscillate in an axial direction be moved if you hit the writing instrument from the side, which then dried up Ink residues are removed from the writing tube.

The drop weight from the spring element is preferably in the rest position held in the axial direction in a central position, so that it is in the rest position does not rest on any shoulder or a stop, but emerges from this Center position can move axially in both directions. This will cause shocks Stops of the falling weight Contact surfaces prevented.

In a preferred embodiment, there is the spring element from a wire running in the axial direction of the hair wire, the upward merges in an arcuate course into an open circular ring, whose circular plane is substantially perpendicular to the axial direction of the hair wire, and that in the inner wall of the bore receiving the drop weight has an annular receiving groove is provided. This spring element can therefore be very easily inserted into the receiving groove clamp and is held there, so that an axial oscillating movement of the falling weight and the hair wire opposite the writing tube is possible.

The hair wire and the wire of the spring element can, for example consist of one piece and the drop weight can be attached to them. Through this very simple production results.

The invention is illustrated below with reference to an exemplary embodiment showing figures explained in more detail.

Fig. 1 shows the pen tip of a tube pen with a Spring element according to the invention.

FIG. 2 shows the spring element from the pen tip according to FIG. 1.

The pen tip shown in Figure 1 contains a cylindrical Body 2. The space 9 connects the pen tip with one not shown Shank of the tubular pen provided ink storage space. In the cylindrical Body 2 is provided with a bore 6 to which the writing tube 8 connects at the bottom.

The bore 10 connects the space 9 with the helically wound Ventilation channel 12. This connection is required to ensure a To create pressure equalization between the ink storage room and the surrounding area.

In the bore 6 is the falling weight 3, which in this Case is spherical. At this falling weight is the downward one Hair wire 7 attached, which in the rest position something down from the writing tube 8 protrudes.

The drop weight 3 is on a spring element consisting of a wire 4, 4 ' attached, which is clamped in a groove 5 in the inner wall of the bore 6. As As can be seen in FIG. 2, the spring element consists of a wire that has a falling weight runs out in the direction of the hair wire 7 upwards and then arcuate merges into an open circular ring 4 ', the circular plane of which is essentially perpendicular runs towards the direction of the hair wire. The curved transition of the wire allows a swinging movement of the falling weight in the direction of the longitudinal axis of the hair wire, and the open annulus allows resilient compression for insertion to allow in the annular groove 5.

According to the invention, the falling weight 3 is thus made by means of a spring element held, which is attached to the inner wall of the bore 6. So that this spring element holds the falling weight in a central position in which the hair wire Writing tube 8 protrudes and from which the falling weight in both axial directions can be moved is of course a corresponding adjustment between the weight of the falling weight and the spring constant of the spring element required.

In an embodiment that is advantageous in terms of manufacturing technology Hair wire 7 and wire 4 from one piece and the drop weight 3 is on this wire attached. In this way, hair wire and spring element can be made from one piece can be prefabricated, and the drop weight can subsequently be pressed on or onto others Way to be attached.

By means of the drop weight according to the invention and the spring element it is thus possible, by simply moving the pen tip, even through Lateral movements or a swinging movement of the falling weight by bumping into it 3 to generate, through which the hair wire 7 moves back and forth in the writing tube 8 is removed and thereby all dried ink residues from the writing tube will.

The invention can of course also be used with other writing implements use with falling weight and cleaning wire, which in the rest of the structure differ from the differentiate in Figure 1 illustrated embodiment.

Claims (6)

Expectations W Writing utensil, especially tube pen, with a pen tip with a hole to hold the falling weight and a writing tube into which a hair wire attached to the lower end of the drop weight protrudes, as well as with an ink storage room connected to the bore at the upper end of the writing tip, characterized by a swinging motion of the falling weight (3) enabling and with this connected spring element (), which with one end at a relative of the falling weight (3) stationary point (5) is attached. 2. Writing implement according to claim 1, characterized in that the Drop weight (3) from the spring element (4) in the rest position in the axial direction in a Middle position is held. 3. Writing implement according to claim 1 or 2, characterized in that the spring element (4) is connected to the upper end of the falling weight (3). 4. Writing implement according to one of claims 1 to 3, characterized in that that the spring element consists of one extending in the axial direction of the hair wire (7) Wire (4) consists of which goes up in an arched course merges into an open circular ring (4 '), the circular plane of which is essentially perpendicular to the axial direction of the hair wire (7), and that in the inner wall of the Drop weight (3) receiving bore (6) an annular receiving groove (5) is provided is. 5. Writing implement according to claim 4, characterized in that the hair wire (7) and the wire (4) consist of one piece to which the drop weight (3) is attached is. 6. writing implement 'according to one of claims 1 to 5, characterized in that that the falling weight (3) is spherical. L e r s e i t e