DE1461600B - Two f <> rKen-change pen with ball control - Google Patents

Description

1 2

The invention relates to a two-color change. A particular manufacturing advantage is thereby

Pen with backwards out of the shaft causes the two writing medium carriers in the

protruding pressure parts, in which the shape and the groove guide are completely equalized by being pushed forward.

the one writing medium carrier the other are guided by one.

Return spring is automatically reset, with 5 In the drawing, an embodiment of the

a switching ball is used to disengage and the invention is shown and then

grooves provided in the side surfaces of the printing parts. It shows

are in which the common shift ball runs, F i g. 1 a longitudinal section through a two-color

the exchangeable ballpoint pens with switching ball, plate-

Grid extensions snap into place and during the pre-shaped intermediate part and coaxial circumferential grooves,

Thrust a transverse movement in the direction of between F i g. 2 the subject of FIG. 1 by 90 °

the existing parting line between the pressure parts. turns in view,

It is according to the German utility model F i g. 3 is a view of the subject matter of FIG. 2

1755 326 and the USA patent 2 972 980 probably from above onto the printed parts,

known, with single ballpoint pens, in which the 15 F i g. 4 shows a cross section through the object

Refill by pressing the push button either in FIG. 2 according to section line IV-IV,

against the action of a return spring and F i g. 5 shows a printed part of the object of FIG

is pushed back, a switching ball to Fig. 1 and 2 in view, with the feed rod

turn, which is shown broken off in the grooves of the feed part,

Mine carrier runs, these grooves partially as 2 ° F i g. 6 a view of the plate-shaped intermediate

Parallel grooves that are in connection with the locking part of the subject of FIG. 1 and 2 and.

create a closed circulation system. 7 shows a longitudinal section through the object

whole, are trained. the F i g. 6th

With the previously known two-color change ballpoint pen according to Writing implements with automatic return of the 25 F i g. 1 and 2 consists of the upper housing part 1 and a writing medium carrier when the shaft part 2 is connected upstream, which through the intermediate piece 3 with others Writing medium carrier connected to each other by pressure. In the housing part 1 are the Pressure part, however, both lead carrier pressure parts 4 and 4 'are displaceable within the pressure part axial or inclined grooves attached, in which mounted, the lower end in the feed rods a switching ball runs, with the retention in 30 10 and 10 'pass.

Housing part latching surfaces are provided. The ball is located at the end of the feed rods 10 and 10 '

carries out a transverse movement, whereby the receptacles 8 and 8 ', which the writing

Always take the detent at the outer points of these transverse mines 7 and 7 '. The return springs 9

Movement takes place while the pressure parts are in the form of helical springs over the feed rods 10

move the grooves in the axial direction. 35 and 10 'and are supported on the one hand

With these movements, intermediate part 3 and, on the other hand, at the transition of the

a proper function and in particular for the pressure part 4 or 4 'to the feed rod 10 or

Avoid switching interference, the grooves very 10 'from.

be executed precisely, since both the front and In the upper housing part 1 is a plate-shaped

Return movement takes place in the same grooves. 4 ° intermediate part 5 inserted so that it is between

The invention has now set itself the task of a web of the housing part 1 and the intermediate

to remedy these deficiencies and at the same time a piece 3 is recorded.

tolerance-independent, simple change mechanism to · This intermediate part 5 has according to * F i g. 6 and 7

create that is particularly easy to manufacture. a transverse slot c , in which the switching

This is achieved in that the two-ball 6 is transverse to the axial direction of the writing instrument

color-changing pen with backwards out of the can move.

The pressure parts 4 and 4 'are shown in FIG. 5 runs completely spherically in the grooves of the pressure parts and is designed in the same locking manner and on the flattened part engages the extensions, in the rear shaft part in be-coaxial longitudinal grooves 11, which are connected to a flat, elongated intermediate part 5 ° at both ends in a known manner and is provided within this cross-connection that form the locking points α and b for locking the writing means. Above the latching carrier has an elongated hole in which a deflecting edge d is provided which causes the ball protruding from the intermediate part to disengage when the pressure switch ball is pushed forward, and which effects the pressure part.

share arranged grooves over the entire length as 55 In the rest position of the writing instrument are both

Parallel grooves that are in connection with the locking lead carrier in the retracted position; so

Extensions to a closed circulation - both return springs 9 press the mine carrier

system complement, are formed, the locking upwards, so that the two pressure parts 4 and 4 '

set lie in the axis of the writing instrument so that protrude from the upper housing part 1,

the locking in the middle position of the switching ball inside 60 The coaxial grooves 11 and 11 'of the pressure parts 4

half of the elongated hole of the intermediate part takes place. and 4 'are exactly on top of each other, with the two

As an extension of the inventive concept, at the lower locking points α and a ' at the cross slot c of the front locking point, which forms the switching ball 6 connection of the parallel grooves located in the transverse slot c of the intermediate part 5, an inclined edge is struck.

provided, which when the reset 65 is advanced. B. the pressure part 4 'in

Writing medium carrier by moving the F i g laterally. 1 or 2, pressed down, occurs the

Switching ball disengages the advanced nib of the ballpoint pen refill T from the

Writing medium carrier designed particularly inexpensive. Shaft sleeve 2 out, and after a small one, hardly

With a noticeable return movement , the switching ball engages in the detent position b ', as a result of which the lead carrier 4' is fixed in the front position, that is to say in the writing position.

If the other color is now to be selected, one only needs to press the other pressure part 4 downwards, and in this case the switching ball 6 is deflected laterally by the locking edge d during the first, small distance of the upstream movement, whereby the pressure part 4 'disengages and with Help the return spring 9 is pushed back into the rest position. After the lead carrier 4, 5 has been fully advanced, the pressure part 4 engages in the upper latching point b.

If you want to take back the advanced mine without advancing the other mine, it is sufficient a slight pressure on the pressure part of the mine carrier in the rest position.

This embodiment of a two-way exchangeable ballpoint pen can be made relatively cheap and ao advantageous in plastic, the retaining clip 1 'can be manufactured in one piece with the upper part 1 of the shaft.

Claims (3)

Claims: a5 1. Two-color interchangeable pen, in particular two-color ballpoint pen, with printing parts protruding to the rear from the shaft, in which the other is automatically reset by means of a return spring by advancing one writing medium carrier, a switching ball being used for disengagement and in the flat sides of the printing parts opposite one another each writing medium carrier grooves are provided in which the switching ball runs, which engages in the grid extensions provided at the end points of the grooves and during the advance makes a transverse movement in the direction of the parting line existing between the printing parts, characterized in that in the rear shaft part (1) in known Way, a flat, elongated intermediate part (5) is provided which has an elongated hole (c) for locking the writing medium carrier (4, 4 ') into which the switching ball (6) protruding on both sides from the intermediate part (5) is inserted so as to be easily displaceable is, and d the grooves (11) arranged in the pressure parts (4, 4 ') are designed over the entire length as parallel grooves which, in conjunction with the locking points (a, b) , complement each other to form a closed circulating system, the locking points (a, b) lie in the axis of the writing implement, so that the locking occurs in the middle position of the switching ball (6) within the elongated hole (c) of the intermediate part (5). 2. Two-color interchangeable pen according to claim 1, characterized in that the front latching point (α) which forms the front connection of the parallel grooves (11) has an inclined edge (d) which during the advance of the reset writing medium carrier (4) through the side Moving the ball (6) causes the advanced writing medium carrier (4 ') to disengage. 3. Two-color change pen according to claim 1 and 2, characterized in that the both writing medium carriers (4,4 ') designed completely the same in shape and in the groove guide are. 1 sheet of drawings