DE4011087A1 - Function-controlled ball point pen - has key at housing point normally held by fingers of writer - Google Patents

Abstract

By pressure on the key (16),a lever (20) pushes the pen casing (14) so that the writing point (15) becomes free. The casing remains in this position as long as pressure is maintained on the key. The lever (20) is connected at its ends (22) with the key (16) and the casing (14). The key tips around a transversal axis (21) so that its part in front of the axis is removed from the casing when pressure is applied, allowing to be released from a securing notch (18) for its movement to expose the writing point (15). When a key is released, a spiral spring (19) between the casing and the pen ink carrier is pressed forward, thus protecting the ballpoint. At the same time, the key is guided back to its starting position its front part arresting the casing. USE/ADVANTAGE - To obviate the soiling of clothing and other textile material by ballpoint pens due to mishandling.

Description

The present invention relates to a writing instrument. From the state of the Writing instruments known in the art (e.g. ballpoint pens, fountain pens, Pencils) are used to protect against textile soiling either equipped with a cap that when not in use Writing device is plugged in, or it is - z. B. in manual Retractable ballpoint pens - the refill by pressing a button or by pushing together individual housing parts or by Rotating movement alternately in the ready to write or in the protected Position.

All of these designs have the disadvantage that they are in particular frequent picking up and putting the writing instrument aside require increased attention and still do it again and again due to incorrect handling for soiling textiles is coming.

The present invention is based on the object To create writing instrument, in which the switch from the protected to the write-ready position and vice versa none Attention is required and is only done when actually needed.

A writing instrument provides the solution to this problem Switching is achieved with the help of a button located on the Location of the housing where the writing instrument is usually is held with fingers when writing.

According to a preferred embodiment of the invention, the Expose the writing tip of the lead to the ready-to-write position required energy from the pressure that the fingers when in the usual way to take the writing instrument at hand exercise on its housing. The transfer of the writing tip into the protected position is provided by spring energy. The mine is located itself in an unchanged position relative to the housing of the  Writing instrument. The protection of the mine tip is from one in axial Direction of the mine movable sleeve taken, which this through Spring force is pushed so far over the mine tip that it is protrudes by about 1 mm. The task of removing the sleeve from the top of the Push back mine from one into the case on the Place where the writing instrument is usually touched Button released via a lever mechanism. This button, which is one Axle located further forward on the housing can tilt with one at its front end, the sleeve rests in its protective Lock position. When the button is pressed, the sleeve first released and then back over the lever mechanism (against the spring force). The one when writing with the Fingers usually exerted on the housing of the writing instrument Pressure exceeds that required to trigger the mechanism Multiple keystrokes. When the button is released, the pushes Spring pressure automatically returns the sleeve to the protective position, which returns the button to its original position and the Sleeve is locked at its front end.

In the following, the present invention will be described with reference to the Drawings described in more detail. It shows

Fig. 1 is an enlarged longitudinal section through the front part of the writing instrument,

Fig. 2 shows a section through the entire writing instrument,

Fig. 3 shows the outer view of the function-controlled writing instrument.

First, reference is made to Fig. 1. When the button ( 16 ) is pressed in the direction of the arrow, the lever ( 20 ) pushes the sleeve ( 14 ) back so that the lead tip ( 15 ) is released. The sleeve ( 14 ) remains in this position as long as pressure is exerted on the button ( 16 ). The lever ( 20 ) is articulated at both ends ( 22 ) to the button ( 16 ) or the sleeve ( 14 ). The key ( 16 ) tilts about a transverse axis ( 21 ), so that the part of the key ( 17 ) located in front of the axis moves away from the sleeve ( 14 ) when the key is pressed and releases it on the catch ( 18 ) so that the previously described movement of the sleeve ( 14 ) can take place. When the button ( 16 ) is released, the spiral spring ( 19 ) located between the lead ( 13 ) and the sleeve ( 14 ) presses the sleeve ( 14 ) forward again, so that the lead tip ( 15 ) is protected against contact. At the same time, the button ( 16 ) is returned to its starting position, whereby the sleeve ( 14 ) is locked again by the front section of the button ( 17 ). A bearing ( 23 ) prevents the sleeve ( 14 ) from deviating from its centered position during the movement process.

Referring now to FIG. 2. At the rear end of the rear housing part ( 10 ), the end of the lead is fixed by simply inserting it into a clamping sleeve ( 12 ). A flexible flap ( 24 ) can be located between the button ( 16 ) and the housing ( 11 ).

Reference is made to Figure 3.. The writing instrument according to the invention has a housing with a front housing part ( 11 ) and a rear housing part ( 12 ). On the front housing part ( 11 ) there is a large-area button ( 16 ) which is approximately flush with the rest of the housing. The tip of the lead is covered by the sleeve ( 14 ).

Claims (4)

1. Function-controlled writing instrument, characterized in that a button is located at the location of the housing at which the writing instrument is usually held with fingers when writing. 2. Function-controlled writing instrument according to claim 1, characterized characterized that the mine by means of a button, which turns on the location of the housing where the writing instrument is usually held by fingers when writing the protected position is transferred to the ready-to-write position. 3. Function-controlled writing instrument according to claim 1 and 2, characterized in that the front part of the mine by a Surrounded sleeve, which in turn from the housing of the Pen is surrounded. 4. Function-controlled writing instrument according to claim 1, 2 and 3, characterized in that the sleeve surrounding the mine is displaceable in the axial direction relative to the mine.