FR2561586A1 - SHARPENER - Google Patents

Abstract

SHARPENER. IT INCLUDES AN INTRODUCING ORIFICE 22 FOR THE SELF-CLOSING PENCIL AND IS CHARACTERIZED IN THAT, FOR THE CLOSING OF THIS ORIFICE, SHUTTERS 28 ARE PROVIDED FOR OPENING BY PUSHING BY THE PENCIL AND WHICH ARE RETURNED TO THE CLOSED POSITION AND MAINTAINED BY AN ELASTIC CORD 30 FORMING A CLOSED LOOP.

Description

Sharpener.

  The present invention relates to a

  pencil comprising a body receiving waste size qli has a pencil introducing orifice that closes automatically in case of non-use of the pencil sharpener, the two closure members which each close half of the orifice d introduction being in the body behind the orifice

  of introduction and which can be placed in a position of

  meture by an elastic return means.

  A sharpener of this type is known by

  example according to DE-A 2 948 086. In this example,

  known pencil, the two closure members are drawers or blades which are pushed towards one another in the closed position by metal coil springs, the edges of these drawers being milled on the line of seal, so that in the closed state is formed a notch V in which the tip of the pen then enters, continuing to penetrate,

spread the drawers.

  This achievement is too costly for a mass-produced article such as the pencil sharpener in question and is also subject to operational incidents, because it is used a friction due to slippage. Care must be taken that the slide surfaces of the drawer are smooth and can not become dirty or damaged.

  and that the drawers do not get stuck while slipping.

  All of these are weak points of this size-

known pencil.

  The object of the invention is to improve a sharpener of the type indicated in the preamble so as to

  to ensure with a low technical cost a

  re and a perfect opening of the introduc-

pencil.

  The invention achieves this goal with the size-

  pencil supposed known previously indicated thanks to the fact that the two closure members are hinged flaps that can be folded inwards in the body when introducing the pencil to

carve.

  Since the invention makes use of pivoting and not sliding, the closing mechanism is much less subject to incidents. Dirt and

  damage does not interfere with pivoting. In-

  However, the requirements concerning the flap mounting accuracy are much lower than in the case of the known pencil sharpener, in which exactly long sliding surfaces must be made. Preferably, the elastic return means

  includes an elastic cord that passes under each

  let parallel to its hinge. This elastic cord is stretched during the opening of the flaps by pushing during the penetration of the pencil, and automatically closes the flaps when removing the pencil by retracting

  and pushing the flaps towards the insertion hole.

  Such an elastic cord is also cheaper and mounts more easily than the coil springs

of the state of the art.

  An additional simplification is provided if there is a single elastic bead that forms

a closed loop.

  In addition, the manufacture of the pencil sharpener

  is particularly simple if, according to a preferred embodiment of the invention, there is provided an insert member receiving the size body and o depart, on the side opposite said size body, two ribs enclosing the orifice between them body size; in the free edges of these ribs are provided recesses for receiving pins made on the flaps and the elastic cord, and the insert is engaged in a portion of the pot-shaped body having the introduction port of the pencil and is united to this part so that the ribs, pressed against the bottom of the pot, surround the insertion hole of the pot-shaped body part and the shutters close this hole. The insert and the pot-shaped body part are two plastic parts which are suitably assembled by gluing or welding after mating the flaps and the elastic cord.

  Other advantages, details and characteristics

  of the invention are apparent from the following description:

  illustrating a preferred embodiment made with the aid of the accompanying drawing, in which: FIG. 1 is a side sectional view of a pencil sharpener according to the invention, FIG. 2 is a sectional view. partial of the sharpener of Figure 1 in a direction perpendicular thereto, and Figure 3 is a partial top view of the insert without the shaped body portion

of pot.

  The sharpener has a body 10 which consists of a lower portion 12 and a pot-shaped upper portion 14 in which

  find an insert 16. In this element

  16 is mounted a body of size 18. The upper portion 14 of the body 10 and the insert 16 are permanently joined, the insert 16 can be engaged in the lower portion 12 of the body 10 and y

be immobilized by friction.

  The insert 16 has on the opposite side of the size body 18 two ribs 20a and b which on the one hand rest against the bottom of the body part 14 and, on the other hand, enclose the body of size 18 and also surround a hole 22 for introducing the pencil arranged in the upper part 14 of the body 10, as shown very clearly in FIGS. 1 and 2. In the ribs 20a and 20b there are provided recesses 24 (see FIG. 3). in which are mounted trunnions 26 of flaps 28. An elastic cord 30 forming a closed loop

  is also held in recesses 24, as shown in FIG.

  3, said elastic cord 30

  under each flap 28 parallel to its hinge

or journals 26.

  There are two flaps 28, as shown in particular in Figure 1, in which one flap is shown open and the other closed. In reality, both shutters are always open at the same time by the pencil that enters and closes at the same time

  removing the pencil so as to close off said

  this introduction 22 after removal of the pencil.

Claims (4)

  1. Pencil sharpener having a body (10)   with the size waste having an insertion hole (22) of the pencil which closes automatically in case of non-use of the pencil sharpener, the two closure members which each close half of the orifice of pencil introduction (22)   being in the body (10) behind the opening port   duction (22) and can be placed in a position of   characterized by the fact that the two closing members are hinged flaps (28) which can be folded inwards in the body (10) by the pencil to be introduced. Pencil sharpener according to claim 1, characterized in that the elastic return means   comprises an elastic cord (30) which passes under each   that flap (28) parallel to its hinge.   Pencil sharpener according to Claim 2, characterized in that an elastic cord is provided   single (30) which forms a closed loop.   4. Pencil sharpener according to claim 3, characterized in that there is provided an insert (16) receiving a size body (18) and of depart,   on the opposite side to this size body, two ribs   res (20a, 20b) enclosing between them the orifice of the waist body (18), that in the free edges of the ribs (20a, 20b) are provided recesses (24) for receiving pins (26) for the shutters (28), in that the insert (16) is engaged in a portion (14) of the pot-shaped body having the pencil insertion opening (22) and is joined to that portion (14) of such that the ribs (20a, 20b), resting against the bottom of the pot (14), surround the insertion opening (22) of the pot-shaped body part (14), the flaps closing this hole.