DE1561783A1 - Exchange pen - Google Patents

Description

Real Patent Evaluation Institute, Vaduz / FL

• «Exchange pen ¹¹

The invention relates to an interchangeable pen with several, each displaceable in a rest and a writing position Writing medium carriers, with a locking lug being provided on each of the writing medium carriers on which the respective in Writing position located writing desk support by a rotatable locking disc is held.

Interchangeable pens of this type are known, for example, from German patent specification 915 905. task The present invention is for such interchangeable pens by reducing the number of parts to manufacture and to simplify assembly without impairing the utility value.

According to the invention, this object is achieved in that the locking lug is part of a push button that triggers the change of the writing medium carrier, with which also integrally an upper, wedge-shaped projection is connected to the upper, beveled surface of the Locking nose forms a recess in the push button, while the lower, wedge-shaped surface of the locking nose

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forms a second recess with a further projection integrally connected to the push button.

The invention is shown below as an exemplary embodiment four writing medium carriers shown and explained in more detail with reference to the drawing. Show it:

1 shows a longitudinal section through the exchangeable pen,

2 shows a side view of the integral parts according to the invention Push button,

3 this push button in a front view,

4a, b, c, d the two recognizable in the longitudinal section according to FIG Push buttons in rest and writing position,

Fig. 5a, b, c, d the position of the locking disc to the Pressure knots in the specified pattern.

In Fig. 1, two writing medium carriers 10 and 12 are shown, the writing tips 1 and 3 respectively through a recess 2 be pressed into the writing position in the housing of the interchangeable pen. The individual writing material carriers are operated by push buttons 15 and 17, which are provided with locking lugs 22. These locking lugs grip like this into a rotatable locking disk 26, 27 that the writing medium carriers are in their position (rest or writing position) be held. The locking disc 20,27 is veiv with a spring bar 30 acting as a torsion spring. bound, through which the locking disc is yerdrehbar., ... ^. This spring rod 30 is with a counter bearing 9 in the housing of the

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Change pen set; the counter bearing 9 1st with Provided holes through which the writing material carriers are pushed; .this is a good guidance of the Writing medium carrier guaranteed in the housing. The housing is provided with an end cap 19 at the upper end, from which the push buttons 15, 17 protrude laterally. The press studs have protrusions for better handling or provided with a corrugation 45. The push buttons or at least the upper one are expediently visible Part executed in the color that corresponds to the ink in the writing medium carrier.

The snaps are by means of a pin-like approach at the lower end of the push button in the writing material carrier attached {Fig. 2). Each push button 15, 17 is - as can be clearly seen in FIGS. 2 and 3 - with projections 21, 23 and the locking lug 22, which delimit the recesses 24 and 25 which are designed so as to that the locking disc 26, 27 can engage in them. Aa lower end of the projection 23 is supported by the spring or 34 with the upper end 32 * or 34 * from; the lower The end 32 ″ or 34 ″ of each spring, which are arranged coaxially around the writing medium carriers 10, 12, are supported on the counter bearing 9.

Particular attention should be paid to the formation of the locking lug 22, which is beveled on the underside

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Surface 22 * (Flg. 2) ends through which the rotary movement of the

Locking washer 26, 27 and thus the spring bar 30 is caused when the push button is out of its resting position is pressed into the writing position.

If, for example, the writing medium carrier 12, which is in the rest position in the illustration according to FIG. 1, instead of the Writing medium carrier IO are brought into writing position, the push button 17 is pressed in the direction of arrow 40. The following process can be divided into two phases structure; once the writing medium carrier 10, which is in the writing position for the tent, must be brought into the rest position in order to clear the opening 2 and, on the other hand, the next writing medium carrier 12 should move from the rest position in Get writing position. When pressing the push button abuts the beveled surface 22 * of the locking lug 22 against a projection 27 of the locking disc. Through this the locking disc (and with it the spring bar 30) is rotated. As a result of this rotation, the projection 27 disengages of the recess 24 of the writing medium carrier 10, which was previously in the writing position, so that it is supported by the spring is pushed up in the rest position; the locking disc slides with its projection 27 on the long one Along the edge of the locking lug 22 until it can snap into the lower recess 25 on the push button 15. This will

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this push button is now fixed in the rest position. Simultaneously with the outward movement of the push button 15, another projection 27 of the locking disc slides on the long edge of the locking nose 22 of the push button 17, which moves downwards. As soon as the locking disc with its projection 27 into the upper recess of the push button 17 can enter (in this phase the corresponding projection is in the lower recess 25 of the the other push button), the spring bar rotates the Locking disc back and thus fixes the projections the locking disc in the recesses 24 or 25 · The writing medium carrier 12 is thus in the writing position held. The movement of the snaps is special can be clearly seen from FIGS. 4a, 4b, 4c and 4d, while the corresponding position of the locking disk with its recesses 26 and projections 27 in FIGS. 5a ~ d as Sections through the push buttons according to Fig. 4a-d is illustrated.

In order to also absorb a strong writing pressure and the Keeping the pen nib securely in the writing position is that The upper projection is provided with a wedge-shaped surface 21 *, and the surface 22 ″ of the locking nose is also corresponding beveled. This achieves that the corresponding projection 27 of the locking disk all the more latches, the greater the exerted on the writing material carrier Writing pressure is.

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A notch 23 * on the lower projection 23 facilitates the locking disc latching into the rest position.Through this notch 23 ^f , the projection is guided particularly easily against the long edge of the locking lug 22, on which it slides into the rest position.

Because the new push button is made in one piece, it is particularly suitable for automatic production and assembly of interchangeable pens. This means that these interchangeable pens are considerably cheaper connected without their functionality being impaired in any way.

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Claims (3)

Claims 1. An interchangeable pen with several, each in a resting and a writing position displaceable writing medium carriers, wherein a locking nose is provided on each of the writing medium carriers, on which the writing medium carrier located in the writing position is held by a rotatable locking disc, characterized in that the The locking lug (22) is part of a pushbutton (15,17) which triggers the change of the writing medium carriers (10,12), with which an upper! ·, wedge-shaped (21 *) tapering projection (21) is connected, which is inclined surface (22 ") of the locking nose forms a recess (24) in the push button, while the lower, wedge-shaped surface (22 *) of the locking nose with a further, integrally connected to the push button projection (23) forms a second recess (25). 2 · interchangeable pen according to claim 1, characterized in that the wedge-shaped bevel (21 *) of the upper Projection (21) and the beveled surface (22 ") of the locking lug (22) are inclined so that the projections (27) the locking disc (26,27) remain firmly locked in place with increasing writing pressure 3. Exchange pen according to one or both of the preceding claims, characterized in that the lower Projection (23) is provided with a notch (23 *). 009817/0116 -7-