DE2304372A1 - FILLING PENCIL - Google Patents

Description

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TELEPHONE 032 40 66

Patent application

of the company

FABRIQUE SUISSE DE CRAYONS CARAN D'ACHE S.A Geneva (Switzerland)

33, rue de la Terrpss.iirc ■

Filling pencil

One already knows filling pencils, comprising a hollow body, in which a tubular, displaceable part is installed, which is used to hold a pencil lead and which has a pair of pliers at one end to clamp the lead and a push button at the other end, which protrudes from the hollow body to prevent the user from displacing the movable part against the effect

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to allow a return spring, being an annular Part with a wedge-shaped longitudinal section, is arranged between the pliers and the inner wall of the hollow body and between two, in the latter, firmly scratched stops is displaceable and in the position in which he is with the one stop comes into contact with the tension of the pliers and at the same time the blocking of the sliding one Part guaranteed against the action of the spring and in the position where it comes into contact with the other stop comes the relaxation of the caliper causes, and wherein the hollow body has a brake caliper that causes friction exercises the pencil lead.

The invention relates to such a filling pencil and now aims to simplify its construction and its To reduce manufacturing costs. This object is achieved in that the displaceable tubular part consists of one Piece with the collet and the push button is made, and that the hollow body is made from one piece with the brake calliper consists.

The accompanying drawing shows a schematic and example

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one embodiment of the filler pen according to the invention. Show in it:

Fig. 1 is an axial partial section of the pen in the ready-to-write position,

Figure 2 is a similar section showing the various components of the filler pen shows in the positions that they assume at the end of the lead advance process,

3 and 4 show a section on an enlarged scale of FIGS. 1 and 2.

The filler pen shown comprises a hollow body 1, from injection-molded plastic, the end of which is 2! a hole j5 for guiding the pencil lead 4. has. The bore j £ is inside the hollow body _1 by tongues fj. extended, which consist of one piece with this and form a pair of pliers for braking the pencil lead 4_. This braking will by the tongues J5. exerted on the pencil lead Causes frictional force.

In the interior of the hollow body JL a tubular displaceable part 6 is installed, one end of which

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is slotted to form the tongues J_, which form a pair of pliers for clamping the pencil lead. For this purpose, these tongues £ are surrounded by an annular part 8, which has a wedge-shaped longitudinal section and can be moved between two stops, one of which is through the shoulder 2. of the inside of the hollow body I _- and the other by the shoulder IO of a sleeve 11 built into _{the body I 1.}

The shoulder JLO of the sleeve JLl also serves as a support for one end of a helical spring JL2 Part 6 surrounds and is supported with its other end against a shoulder JLJ5 of this part (5.

The part 6 extends practically over the entire length of the body I ^ and protrudes from the rear part of the same, to form a push button 1Λ, which is operated by the user to advance the lead out of the pencil. The part 6 has, in the vicinity of the rear filler lead end, an annular rib 15 which interacts ^{1 in} each case with an annular rib 16 with which the inside of the hollow body 1 is provided,

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Since the movable part 6 is also made of injection-molded plastic, the inherent elasticity of the body I ₁ and the part 6_, the assembly of the filler pencil will enable a sufficient pressure on this after the part 6 has been inserted into the rear opening of the hollow body ^ Part 6 is exercised until the rib 23 jumps over the rib 1 (5 and it assumes the position shown in the drawing.

It should also be noted that the sliding part (5 is open at both ends, which enables the pencil lead to be inserted into the filler pencil, both from the front and from the rear.

If the components of the filler pencil are in the Pig. 1, the part 6 is backed up by the spring JL2 to the rear part of the body J ^ and the pencil lead is pulled by the pliers consisting of the tongues, as a result of the action of the inner frustoconical surface of the ring-shaped part 8 on the inclined outer surface of these tongues , clamped.

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When writing, the components are in this position.

To advance the pencil lead, the user must press the push button 3, 4. Press to move part £ against the action of spring £. As a result of the relatively weak inclination of the inner conical surface of the annular part 8 with respect to the axis of the body JL, a self-locking between the part 8 and the tongues χ is achieved, so that when they begin to move, these two parts χ and 8 are displaced with each other and while maintaining the pressure exerted by the tongues X on the pencil lead. The latter is thus shifted at the same time as the part 6, until the point in time at which the annular part 18 comes to a stop against the shoulder £. The continuation of the feed movement of the displaceable part then releases the tongues χ from the annular part 8 and removes the tensioning effect of the pliers on the pencil lead, as shown in FIGS.

When the user releases the push button 3Λ, the part 6 is reset by the spring 12 and takes the annular part 8 with it, which is in the sleeve 11 free

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slides. When the part 8 then comes to rest against the shoulder 10, the tongues £ between the part 8, and the pencil lead wedged to clamp the latter. During this return movement of the part 6 the pencil lead, thanks to the tongues ^ des Body I ^ exerted slight clamping, stand still.

In the case where one wishes to increase the frictional force between the pliers and the pencil lead, the surface of the tongues £, which cooperates with the mine 4., Have grooves or small protrusions.

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Claims (5)

DIPL-tMO. DIETER IANDf A Tv .Hi O BÖNING . ··. ·· ..λ »τε 218 / 13.990 DE P ° ² ^. January 1973 Patent application of the company FABRIQUE SUISSE DE CRAYONS CARAN D ¹ ACHE SA Geneva (Switzerland) ~ 5, rue de Ie TerrassieTe Claims ( 1.Jfiller pencil, comprising a hollow body in which a tubular movable part is built, which serves to hold a pencil lead and which has a pair of pliers to clamp the lead at one end and a push button at the other end,
which protrudes from the hollow body to the user
to enable the displaceable part to be displaced against the action of a return spring, an annular part with a wedge-shaped longitudinal section between the pliers and the inner wall of the hollow body ./2 409815/0240 is arranged and is displaceable between two, in the latter fixed stops, and in the Position at which it comes into contact with one stop, the tension of the pliers and, at the same time, the Blocking of the movable part against the action of the spring is guaranteed and capable of which it comes into contact with the other stop causes the forceps to relax and the hollow body has a brake caliper that exerts friction on the pencil lead, characterized in that that the sliding tubular part (6) is made in one piece with the pliers (7) and the push button (14) is made, and that the hollow body (1) with the brake calliper (2) consists of one piece. 2. Filling pencil according to claim 1, characterized in that the displaceable part (6) and the hollow body (1) consist of injection-molded plastic. 3. Filling pencil according to claims 1 and 2, characterized marked that the sliding, ./3 4098 15/0240 tubular part (6) delimits a passage open at both ends. 4. Filling pencil according to claims 1 to 3, characterized characterized in that the inside of the hollow body (1) has an annular rib (16), which cooperates with an annular rib (15) on the outside of the displaceable part (6) to prevent the latter to hold back against the action of the spring (12) in the absence of a lead (4) in the filler pencil. 5. filler pencil according to claims 1 to 4, characterized in that the pliers (7) of the displaceable part (6) is provided with grooves to increase its frictional force. 409815/0240