EP1036672B1 - Sharpener - Google Patents

Description

The invention relates to a so-called container sharpener with the preamble of the features listed in claim 1 (DE 27 45 600 A1).

With such container sharpeners, the detachably fixed hood serves as chip catcher for the peeling waste. It prevents unwanted pollution of the environment Tips before.

For reasons of manufacturing rationalization, it is known that from a bottom part and an existing detachably attached cover as separate casing Manufacture unit and a separate on the bottom of the casing to fix the manufactured sharpener, such as a simple version as a mass article is generally common and inexpensive to manufacture. This sharpener consists of generally only from one containing the guide channel with a conical tip end and made of plastic or metal, e.g. Aluminum-made pointed case and a cutting knife blade attached to it, which is fixed to the sharpener housing by screwing or by one-piece encapsulation with the tip housing material is accomplished. It is everyone as a mass-produced sharpener. Container sharpener with separate, from bottom part and hood existing casing and such pin fixed in it or mine sharpeners are previously known from the aforementioned DE 27 45 600 A1, wherein the fixation of the sharpener on the bottom part of the casing is a clamp connection is.

Enclosures for such sharpening units are usually used for aesthetic reasons elaborately designed. Often these cases are with additional Enriched functional parts, their technical or design design is adapted to specific customer requirements and thereby the production of the casing parts, make their hood especially expensive. Because of the often very different customer requests in terms of technical and design The number of pieces requested by the market are too low to a high manufacturing outlay for the casing and to justify its technical and design design.

The invention has for its object this problem by technical means to solve, which is the basis for a production of the envelope housing in rational Creates quantities. This object is solved by claim 1. Through this Solution, the molded projections are designed in such a way that they can be or snap fixation of a small-format sharpener by acting on it External walls from the outside in or a large-format sharpener Spreading pressurization of wall areas of its housing from the inside outwardly between them. For the application of the expansion pressure it is of course necessary that the exposed wall areas of are accessible from the outside for the projections.

Due to the invention, it is no longer necessary for differently sized Spitzer to produce a separate casing for each. If in the generic term of claim 1 is a tension or snap fixation, acts it is preferred to use the types of connection described in the "Manual of Connection Technology "by Carl-Otto Bauer, Carl Hanser Verlag Munich Vienna 1991 pp. 269 ff. And 295 ff. Are described in detail. By the ability of Envelope housing, in the same way different sharpener clamping or snap-fix and still their guide channel for the pen or lead end to be positioned exactly in relation to the through opening of the casing, becomes the basis for a profitable number of envelopes or casing parts created.

Claim 2 embraces the fact that the pointed case is straight Large-format tips mostly molded from thin-walled plastic are. This is initially necessary for injection technology reasons, sink marks to prevent. It also saves material. This leads to, that especially the case of large-format sharpener one on its outside jagged case bottom, from which the side walls of the pointed case project freely downwards from home. That gives it on one Stand-up sharpener has a compact design and creates inherently the possibility of freely projecting towards the bottom Side walls of the sharpener housing through the molded projections of the bottom part of the To reach behind the casing (claim 2). As a result, the invention takes advantage of circumstances with large-format, mass-produced lace, which thereby their intended use according to the invention within an envelope housing do not have to be adjusted individually.

Claim 3 includes a special design of the projections, which in precise positional positioning in a simpler, but technically particularly effective manner of the respective sharpener within the casing.

In claim 4 relates to a particularly effective embodiment of the clamping or Snap fixation when clamping a large-format sharpener revealed. The of Intended for fixing the cover of the casing Form surrounding wall or parts of such a surrounding wall of the bottom part together with the projections protruding upwards from the base part a clamping groove, between the side walls of which over the case bottom the large-format sharpener protruding down the side walls can be clamped particularly effectively. That comes from position security the positionally fixed large-format sharpener on the bottom part of the casing. This will act on the sharpener or the sharpener housing when sharpening Peak forces are particularly well absorbed. A loosening of the sharpener within the case is not to be worried even in the event of strong vibrations.

Fig. 1

eine perspektivische Gesamtansicht einer erfindungsgemäßen Spitzereinheit im Montageendzustand.

Fig. 2

die Spitzereinheit nach Fig. 1 mit einem kleinformatigen Spitzer in einer Explosionsdarstellung seiner Einzelteile.

Fig. 3

eine Spitzereinheit analog Fig. 2 mit einem großformatigen Spitzer ebenfalls in einer Explosionsdarstellung seiner Einzelteile.

Fig. 4

eine perspektivische, vergrößerte Ansicht des Bodenteils des Hüllgehäuses.

Fig. 5

eine Seitenansicht des Bodenteils in Blickrichtung des Pfeiles IV in Fig. 3.

Fig. 6

eine Draufsicht auf die dem Spitzer zugewandte Oberseite des Bodenteils.

The object of the invention is explained in more detail with reference to exemplary embodiments shown in the figures. Show it:

Fig. 1

an overall perspective view of a sharpener unit according to the invention in the final assembly state.

Fig. 2

1 with a small-format sharpener in an exploded view of its individual parts.

Fig. 3

a sharpener unit analogous to FIG. 2 with a large-format sharpener also in an exploded view of its individual parts.

Fig. 4

a perspective, enlarged view of the bottom part of the envelope housing.

Fig. 5

a side view of the bottom part in the direction of arrow IV in Fig. 3rd

Fig. 6

a plan view of the top of the bottom part facing the sharpener.

The sharpener unit optionally contains a large-format pencil or lead sharpener 1 or a small-format sharpener 2 and the respective sharpener 1 or 2 surrounding and fixing envelope 3. This envelope 3 is in turn from a base part 4 and a hood 5.

The hood 5 can be clamped to the bottom part 4 with its lower edge region 6. For this purpose, the hood 5 with its edge region 6 is pulled over the base 7 of the bottom part 4 protruding upwards, in the exemplary embodiment all around self-contained surrounding wall 8 slipped over. The dimensioning of the The edge area 6 of the hood 5 in relation to the surrounding wall 8 is hit that the hood 5 with the edge area on the outer surface of the surrounding wall 8 sits tight in the form of a clamp seat. Expediently the hood 5 is precisely positioned with its lower edge 9 on the outer surface or the outer cover surface 10 of the base 7.

A U-shaped clamping rib 11 also stands out of the base 7 of the base part 4 upwards. The U-shaped clamping rib 11 is within the Surrounding wall 8 delimited room arranged. The two U parallel legs 12, 13 of the clamping rib 11 protrude with their free ends into the middle the base 7 into it. The crosshead 14 of the U-shape of the clamping rib 11 runs forming a spacing gap 15 parallel to the adjacent part of the surrounding wall 8. The same spacing gap 15 is between the parallel legs 12, 13 of the U-shape of the clamping rib 11 on the one hand and the inner surfaces the surrounding wall 8 or that forming part of the surrounding wall 8 Corner base 16 recessed. This spacing gap 15 is used to hold the clamp the lower ends 17 of the side walls 18, 19 and the rear wall 20 of the housing of the larger sharpener 1. To increase the lateral elastic bendability of the outer parallel leg 13 and the crosshead 14 of the clamping rib 11 there are the cutouts 21, 22. This is bendability perpendicular to the two flanks of the crosshead 14 and the parallel leg 11.12 possible. In this respect, the lateral resilience of the parallel legs serves 12,13 and the crosshead 14 also the fixation of the smaller sharpener 2 in Contact the inside walls of the parallel legs 12, 13 and the crosshead 14. This fixation is also a tension connection.

The front side 23 of the hood 5 is penetrated by the through opening 24. This lead-through opening 24 is at the level of the attachment edge 9 of the hood 5 open. It can be closed by a blind 25. The blind 25 is on the inside 26 of the hood 5 in longitudinal guides 27, 28 guided in a longitudinally displaceable manner. At the The outer end of the blind 25 is an integrally formed protruding outward Handle projection 29 on the one hand for opening and closing actuation of Hand and on the other hand as an envelope stop in both opening and in Closed position.

Furthermore, the base part 4 is also provided with receiving slots 30, 31 for a cleaning stick 32 provided. The receiving slots 30, 31 are as clamping slots effective. In the fixing position, the cleaning stick 32 is also from the environment shielded below the hood 5. Its handle end 33 is in the fixing position within a shielded opening 34 on the bottom part 4.

From Fig. 3, the large-format sharpener 1 is special from its bottom side good to see. This view shows the rugged structure of the bottom of the Sharpener housing 35 of the large-format sharpener 1. It is a plastic injection molded part, its outwardly compact side walls 18, 19, the rear wall 20 and its front wall 37 in which the opening 36 of the pointed channel bears are thin-walled and with their peripheral edges 38 a footprint for the pointed housing 35 on the surface 39 of the bottom part 4 form. In the clamping or joining position, the side walls 18, 19 and Back wall 20 of large-format sharpener 1 clamped in spacing gap 15, which between the clamping rib 11 and its parallel legs 12, 13 on the one hand and the surrounding wall 8 and the corner base 16 are clamped on the other hand is. This clamping ensures that the position is secured even when shaken on the bottom part 4.

LIST OF REFERENCE NUMBERS

1

large-format sharpener

2

small format sharpener

3

enveloping housing

4

the bottom part

5

Hood

6

border area

7

base

8th

surrounding wall

9

edge

10

Outside deck area

11

clamping rib

12

parallel leg

13

parallel leg

14

transverse rib

15

spacing gap

16

corner base

17

Lower end

18

Side wall

19

Side wall

20

rear wall

21

recess

22

recess

23

front

24

Through opening

25

louvre

26

inside

27

longitudinal guide

28

longitudinal guide

29

handle projection

30

receiving slot

31

receiving slot

32

Swab

33

handle end

34

Floor partial opening

35

sharpener housing

36

opening

37

front wall

38

edge

39

Surface d. Bottom part 4

Claims (4)

1. Sharpener unit

   having a pencil or core sharpener (1, 2) and

   having a casing (3), enclosing the latter, as a shaving collector, this casing (3) containing a base part (4) and a closure cover (5) fixed releasably thereon,

   at least in each case one of the casing parts (4, 5)

   having or leaving free a through-passage opening, which allows access to the sharpener (1, 2) for sharpening purposes, and/or

   being provided with shaped protrusions (12, 13) which project into the housing interior and are intended for fixing the sharpener with clamping or snap-in action,

   characterized in that the shaped protrusions (12, 13) are positioned and designed such that they optionally secure between them

   a small-format sharpener, by acting on the outer walls of the housing from the outside to the inside, or

   a large-format sharpener, by subjecting wall regions of its housing to expanding pressure from the inside to the outside.
2. Sharpener unit according to Claim 1, characterized

   in that the shaped protrusions (12, 13) project from the base part (4) of the casing (3), the sharpener (1, 2) being positioned on said base part by way of its housing base side, which is directed away from the sharpening blade, and

   in that the side walls of the sharpener housing of the large-format sharpener are at least partially accessible for rear engagement by the shaped protrusions (12, 13).
3. Sharpener unit according to Claim 1 or 2, characterized in that the shaped protrusions form a U-shaped clamping rib which optionally have the inner flanks of their U-legs engaging around the housing of the small-format sharpener in a pincer-like manner from the outside or have the outer flanks of their U-legs butting from the inside against side walls of the housing of the large-format sharpener which project freely beyond the housing base, the crossbar of the U-shape forming a positioning stop for the sharpener.
4. Sharpener unit according to Claim 3, characterized

   in that projecting from the surface of the base part of the casing are at least parts of a surrounding wall or a continuous surrounding wall (8), the latter, in the closed position, acting on at least two mutually opposite side walls of the fitted-over cover at least partially from the inside such that they are fixed by expanding clamping action, and

   in that at least one U-leg of the clamping rib and/or the crossbar connecting the U-legs run/runs parallel to, and at a distance from, at least part of the surrounding wall (8) such that the surrounding wall or the part thereof, on the one hand, and at least one U-leg and/or the U-crossbar, on the other hand, form between them a clamping groove for fixing with clamping action at least one side wall of the sharpener housing of the large-format sharpener which projects beyond the sharpener-housing base.

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