EP1647416A1 - Sharpener with integrated protective cap - Google Patents

Abstract

A pencil cap (4) is articulated with respect to a sharpener housing (2) via hinge (5). The cap is turned about the hinge axis (14), tangential to the cap and the housing, to either closed position (15) or opened position, blocking or allowing pencil entry into the pencil introduction opening of the housing.

Description

The invention relates to a particular intended for sharpening a cosmetic pencil sharpener according to the preamble of claim 1.

Common cosmetic pencils usually have a sift mine from a relatively soft lead mass, which is subject to high wear due to their consistency. A cosmetic pencil must therefore be sharpened very often. The refill mass also generally contains a relatively high proportion of liquid, which is why the pen tip of a cosmetic pencil is quickly unusable in open storage by dehydration. Due to these circumstances, a cosmetic pencil in constant smoke is only optimally usable, if at the same time a sharpener to the need for Nachspitzen is tangible. In addition, it is expedient to protect the pen tip during storage by means of a protective cap turned up to avoid damage or rapid dehydration. At the same time, the protective cap ensures that the environment is not polluted by the pen tip. In particular, for the reasons mentioned above, therefore, a sharpener with integrated protective cap in connection with a cosmetic pencil is advantageous.

From DE 20 2004 005 040 U1 such a sharpener is known. The known sharpener comprises a sleeve-like sharpener housing with an open insertion end, through which a pin to be sharpened can be introduced against a peeling device arranged in the sharpener housing. At the end facing away from the insertion end of the sharpener housing, a further sleeve-like housing portion is arranged, which serves as a protective cap for the pin. This further housing portion is open to the side facing away from the sharpener housing side, so that this open end is arranged opposite to the insertion end of the sharpener housing.

From EP 1 120 285 A1 a holding device for a sharpener is also known. The holding device is formed as a molded body made of a rubber-elastic material, which is releasably adhering to a pin in the manner of a cap skirt encompassing the cap from a pin end forth. The holding device further carries a retaining projection, which is designed for releasably engaging in the pin guide channel of a sharpener.

Furthermore, from US Pat. No. 6,568,090 B2 a protective cap for a pin is known, in the lateral cap wall of which a peeling device is integrated, so that the protective cap simultaneously constitutes a sharpener for the pin.

The invention has for its object to provide an easily realizable and manageable sharpener with integrated cap.

This object is achieved by the features of claim 1. Thereafter, the sharpener includes a sharpener housing with a scarfing device received therein. The sharpener housing has an insertion opening arranged substantially concentrically with a pin guide axis of the peeling device for insertion of a pin to be sharpened. The sharpener further includes a protective cap for placement on the pin. The protective cap has an open end and a closed end opposite to a cap axis.

According to the invention, the sharpener housing is hingedly connected to the protective cap, so that the protective cap is reversibly pivotable relative to the sharpener housing into a closed position and an open position. The closed position is characterized in that the cap closes the insertion of the sharpener housing. The open position is characterized in that the insertion of the sharpener housing is released by the protective cap.

The sharpener according to the invention simultaneously achieves several handling advantages. On the one hand, the actual peeling device of the sharpener and the protective cap are captively secured to one another by the articulated connection. This ensures that during storage of protected with the cap cosmetic pencil or its entrainment in a bag or the like, the actual sharpener is always tangible, but on the other hand, during the sharpening process, the cap can not be lost nor must be kept or stored explicitly. Furthermore, in the closed position, the sharpener housing is closed by the protective cap, so that during storage or optionally during transport of the sharpener no chip waste can fall out of the sharpener housing. Finally, the sharpener is easy to handle due to the hinge connection between the sharpener housing and the protective cap, in particular easily adjustable between the open position and the closed position. The sharpener according to the invention is also comparatively easy to produce.

In a particularly space-saving design of the sharpener is designed such that in the closed position, the cap axis is substantially colinear, that is aligned with the pin guide axis, so that the open end of the cap is facing away from the sharpener housing and the closed end of the cap directly connects to the insertion end of the sharpener housing. Expediently, the sharpener housing and the protective cap projecting along the pin guide axis or the cap axis have substantially the same cross-sectional shape, so that the sharpener in the closed position has a substantially homogeneous rod-like shape. The sharpener is thus adapted to the male pin in terms of its shape and is thus particularly space-saving stored with the pen. The sharpener housing and the protective cap preferably have a round or polygonal cross-sectional shape.

The pivot axis of the articulated connection formed between the sharpener housing and the protective cap is preferably tangential with respect to the pin guide axis and the cap axis aligned. This is understood to mean that the pivot axis is perpendicular with respect to the pin guide axis and cap axis and at a distance therefrom. In particular, the pivot axis essentially touches the circumference of the sharpener housing and the protective cap. Alternatively, the pivot axis can also be aligned radially or parallel with respect to the pin guide axis and the cap axis.

In a particularly easily implementable embodiment of the sharpener, the articulated connection between the sharpener housing and the protective cap is designed as a film hinge. In this embodiment, the sharpener housing and the protective cap advantageously form part of a comparatively inexpensively producible one-piece injection-molded part, in particular made of plastic.

To avoid that the sharpener, e.g. when stored in a bag, unintentionally "rises", that is, the sharpener housing and the cap unintentionally pivoted out of the closed position, the sharpener expediently comprises at least one closing element, the sharpener housing and protective cap in the closed position releasably holds together. The or each such closing element is preferably formed by a projection which is integrally formed on the protective cap, that it engages in the closed position in the insertion opening of the sharpener housing. Conveniently, in this case the detachable connection between the sharpener housing and the protective cap is produced by a frictional connection in that the or each closing element in the closed position radially acts on the sharpener housing or the peeling device arranged therein. Alternatively, the closing element is designed to produce a latching connection, screw connection or the like between the sharpener housing and the protective cap.

The peeling device accommodated in the sharpener housing preferably comprises a sharpener body on which a peeling blade is held inclined with respect to the pin guide axis. In particular, in a case of a Spanfanggehäuses closed sharpener housing easy removal of To enable chip wastes, the sharpener body is preferably removably inserted into the sharpener housing. In an embodiment which is both simple in terms of handling technology and manufacturing technology, the sharpener body can be removed from the sharpener housing or pushed back into it through the insertion opening. On the one hand to facilitate the withdrawal of the sharpener body from the sharpener housing and on the other hand to achieve a stable guidance of the sharpener body in the sharpener housing, at least one approximately radially with respect to the pin guide axis outwardly projecting projection is advantageously provided on an insertion of the sharpener body. The sharpener housing has in the region of the insertion opening to the or each projection on a substantially complementary shaped incision. When the sharpener body is inserted, the or each projection lies substantially precisely in the corresponding recess of the sharpener housing. The or each projection preferably protrudes slightly beyond the outer wall of the sharpener housing and thus forms a handle for withdrawing the sharpener body.

A particularly stable embodiment of the peeling device with a comparatively small outer circumference is realized in that the peeling blade is provided with a blade width tapering towards the insertion side of the peeling device. This shape of the peeling knife is already considered inventive in its own right. The tapering blade width is preferably realized by an outer edge of the peeling blade opposite the cutting edge of the peeling blade being rounded or bevelled at least in an area facing the insertion side. In order to ensure a stable support of the peeling knife and to further reduce the space requirement of the peeling device, a knife holder adapted, in particular complementary to the peeling blade, is expediently formed on the sharpener body.

Fig. 1

in perspektivischer Ansicht von schräg oben einen Spitzer mit einem eine Schäleinrichtung aufnehmenden Spitzergehäuse und einer gelenkig mit diesem verbundenen Schutzkappe in Schließstellung,

Fig. 2

in Seitenansicht den Spitzer gemäß Fig. 1 in halb geöffneter Stellung,

Fig. 3

in perspektivischer Ansicht von schräg oben den Spitzer gemäß Fig. 1 in Öffnungsstellung,

Fig. 4

in perspektivischer Ansicht von schräg unten den Spitzer gemäß Fig. 1 in Öffnungsstellung,

Fig. 5

in einem Längsschnitt V-V gemäß Fig. 1 das Spitzergehäuse und die Schutzkappe,

Fig. 6

in einem Längsschnitt VI-VI gemäß Fig. 1 das Spitzergehäuse und die Schutzkappe,

Fig. 7

in Draufsicht auf eine Oberseite die Schäleinrichtung des Spitzers gemäß Fig. 1,

Fig. 8

in Seitenansicht die Schäleinrichtung gemäß Fig. 7 und

Fig. 9

in Draufsicht auf eine Unterseite die Schäleinrichtung gemäß Fig. 7.

An embodiment of the invention will be explained in more detail with reference to a drawing. Show:

Fig. 1

in a perspective view obliquely from above a sharpener with a peeling device receiving sharpener housing and a hinged thereto protective cap in the closed position,

Fig. 2

in side view, the sharpener of FIG. 1 in a half-open position,

Fig. 3

in a perspective view obliquely from above the sharpener of FIG. 1 in the open position,

Fig. 4

in a perspective view obliquely from below the sharpener of FIG. 1 in the open position,

Fig. 5

in a longitudinal section VV of FIG. 1, the sharpener housing and the protective cap,

Fig. 6

in a longitudinal section VI-VI of FIG. 1, the sharpener housing and the protective cap,

Fig. 7

in top view on an upper side of the peeling device of the sharpener of FIG. 1,

Fig. 8

in side view, the peeling device of FIG. 7 and

Fig. 9

in a plan view of an underside of the peeling device according to FIG. 7.

Corresponding parts are always provided in all figures with the same reference numerals.

In Fig. 1, a sharpener 1 is shown. The sharpener 1 comprises a sharpener housing 2 with a peeling device 3 received therein for sharpening a cosmetic pencil (not shown in more detail). The sharpener 1 further comprises a protective cap 4 for placement on the cosmetic pencil, in particular on its pen tip. The sharpener housing 2 and the protective cap 4 are connected to each other in an articulated manner via a film hinge 5. The sharpener housing 2 and the protective cap 4 thus form a one-piece component, which is produced in particular as a plastic injection-molded part.

The sharpener housing 2 has substantially the shape of a cup with a cylindrical housing wall 6, which at one longitudinal end through a cup bottom forming housing end wall 7 is completed. The housing end wall 7 opposite longitudinal end of the sharpener housing 2 is open and serves as an insertion opening 8 (Fig. 2 and 3) for the cosmetic pencil to be sharpened. By the symmetry axis of the cylindrical housing wall 6, a housing longitudinal axis 9 is defined, which coincides with a pin guide axis 9 'of the peeling device 3.

The protective cap 4 is also substantially cup-shaped and comprises a cylindrical cap wall 10 with an open end 11 (in particular FIG. 4) and a closed end 13 (in particular FIG. 3) opposite this in the direction of a cap axis 12.

The film hinge 5 connects the end face of the sharpener housing 2 carrying the insertion opening 8 with the closed end 13 of the protective cap 4 in such a way that the sharpener housing 2 and the protective cap 4 are pivotable relative to each other about a pivot axis 14 oriented substantially tangentially with respect to the sharpener housing 2 and the protective cap 4 , The pivot axis 14 thus extends - regardless of the pivot position of the sharpener housing 2 with respect to the cap 4 - always perpendicular and spaced both to the housing longitudinal axis 9 (and the coincident with this pin guide axis 9 ') and to the cap axis 12th

In Fig. 1, a subsequently designated as the closed position 15 first pivot position of the sharpener housing 2 with respect to the protective cap 4 is shown. In this position, the closed end 13 of the protective cap 4 directly adjoins the end face of the sharpener housing 2 which carries the insertion opening 8, so that the insertion opening 8 is closed by the protective cap 4. The pin guide axis 9 'and the cap axis 12 are in this case arranged in alignment with each other. The sharpener housing 2 and the protective cap 4 have substantially the same diameter, so that the cap wall 10 is arranged in alignment with the housing wall 6. In the closed position 15, the sharpener 1 thus essentially has the shape of a simple cylinder rod. The open end 11 of the Protective cap 4 is in this case arranged on a free end of this bar shape, so that the sharpener 1 in the closed position 15 can be attached to a cosmetic pencil.

During storage and optionally during transport, the sharpener 1 is intended in the closed position 15, so that under these circumstances, on the one hand the sharpener housing 2 with optionally contained therein chip waste is securely closed, but on the other hand, the open end 11 of the cap 4 is accessible.

For sharpening a cosmetic pencil, the sharpener 1 is intended to be pivoted about the half-open pivot position shown in FIG. 2 into an open position 16 shown in FIGS. 3 and 4, in which the sharpener housing 2 and the protective cap 4 are arranged at an angle to each other or even approximately parallel to one another are. In this open position 16, the insertion opening 8 of the sharpener housing 2 is released by the protective cap 4, so that the cosmetic pencil to be sharpened can be inserted along the pin guide axis 9 'through the insertion opening 8 into the sharpener housing 2.

In FIGS. 5 and 6, the sharpener housing 2 and the protective cap 4 of the sharpener 1 are shown in two mutually perpendicular longitudinal sections. In this illustration, it is particularly clear that the protective cap 4 has a cap interior 17 for partially receiving the cosmetic pencil. The diameter of the cap interior 17 is in this case adapted to the male cosmetic pencil so that it can insert into the protective cap 4 only with the application of a predetermined force or can be removed therefrom. This serves on the one hand the captive safety of the protective cap 4 on the cosmetic stick to be protected. On the other hand, the protective cap 4 is preferably designed in such a way that the inner wall 18 delimiting the cap interior 17 surrounds the circumference of the cosmetic pencil used on all sides under pretension, so that the pen tip to be protected is sealed against the outside world. The cap interior 17 is optionally in a region adjacent to the closed end 13 19 conically formed in adaptation to the pen tip of the male cosmetic pencil, so that the protective cap 4 tightly encloses the pen tip of the cosmetic pencil used. In this way, on the one hand, a particularly good mechanical protection for the sensitive pen tip is achieved and, on the other hand, a desiccation of the pen tip is counteracted particularly effectively.

As can be seen in FIGS. 5 and 6, the sharpener housing 2 has a housing interior 20. The housing interior 20 is open towards the insertion opening 8 and serves to receive the peeling device 3, which is shown in greater detail in FIGS. 7 to 9.

The peeling device 3, which represents the actual pointed aggregate of the sharpener 1, comprises a sharpener body 21, on which a paring knife 22 is fastened. The sharpener body 21 comprises a pin guide sleeve 23 whose bore 24 (Figure 3) defines a pin guide channel which is filled by the sharpening cosmetic pencil during the sharpening operation and which is centered with respect to the pin guide axis 9 '.

To the pin guide sleeve 23 includes a knife holder 26 in the axial direction. The knife holder 26 is formed like a wedge (in particular Fig. 8), wherein along the wedge slope, a support surface 27 is formed for the paring knife 22. On the support surface 27, the paring knife 22 is supported such that a cutting edge 28 of the paring knife 22 cuts approximately at a predetermined angle.

The support surface 27 and the peeling blade 22 facing side of the peeling device 3 is referred to as the top 29. The opposite side of the peeling device 3 is accordingly designated as the underside 30. As can be seen in particular from FIG. 7, a cutting slot 31 is formed between the cutting edge 28 and the adjacent area of the knife holder 26, which enables the chip ejection during the sharpening process. On the underside 30 is in a peeling knife 22 opposite portion of the knife holder 26 a approximately trapezoidal opening 32 is provided which facilitates in particular the ejection of peeled off during the sharpening soft lead mass of the cosmetic pencil. The extended into the range of the knife holder 26 pin guide channel is thus open through the cutting slot 31 to the top 29 and through the opening 32 to the bottom 30.

The paring knife 22 is preferably designed such that the blade width tapers in the direction of the pin guide sleeve 23. This knife shape, which is advantageous in terms of high stability and at the same time particularly small footprint, is in particular realized by an outer edge 33 of the peeling knife 22 opposite the cutting edge 28 being chamfered in a region facing the pin guide sleeve 23 in the installed position. The remote from the pin guide sleeve 23 in the installed position region of the outer edge 33, however, is preferably rounded as in conventional sharpening knives. The bearing surface 27 is adapted to the shape of the peeling blade 22 in order to ensure a precise and stable installation of the peeling blade 22.

On the outer circumference of the pin guide sleeve 23 two diametrically opposed projections 34 are formed, which serve as handles for inserting the peeling device 3 in the sharpener housing 2 and for pulling out the peeling device 3 from the sharpener housing 2. The peeling device 3 is inserted with the knife holder 26 ahead through the insertion opening 8 into the housing interior 20 of the sharpener housing 2. In the inserted state, the pin guide sleeve 23 closes off approximately flush with the insertion opening 8, so that the insertion opening 8 of the sharpener housing 2 coincides with an insertion opening 8 'of the bore 24. Each projection 34 lies in a corresponding recess 35 (FIGS. 2, 5 and 6) which is introduced into the housing wall 6 in an area adjacent to the insertion opening 8. The projections 34 preferably protrude slightly beyond the outer circumference of the sharpener housing 2, so that they are easily accessible for pulling out the peeling device 3. The removal of the peeling device 3 from the sharpener housing 2 is in particular for Elimination of chip wastes and remains of mines from the sharpener housing 2 provided.

At the closed end 13 of the protective cap 4, four closing elements 36 are attached, which releasably fix the sharpener 1 in the closed position, so that unintentional opening of the sharpener 1 is avoided. Each closing element 36 forms a projecting from the closed end 23 in the direction of the cap axis 12 projection of approximately kreissegmentförmigenm cross section. The four closing elements 36 thus form together about a cross-slotted ring. The closing elements 36 are in this case positioned so that they can be used when closing the sharpener 1 under a predetermined closing pressure in the bore 24 of the pin guide sleeve 23. In the closed position, the closing elements 36 thus engage in the insertion opening 8 of the pin housing 2, wherein they act on the pin guide sleeve 23 of the peeling device 3 radially and thus oppose the opening of the sharpener 1, a holding force. The closing elements 36 are chamfered or rounded at their outer edge in order to avoid tilting of the closing elements 36 with the guide sleeve 23.

Optionally, the sharpener 1 further comprises a cleaning rod 37. The cleaning rod is preferably integrally formed on the cap 4 so that it protrudes beyond the closed end 13, and thus in the open position 16 of the cap 4 with respect to the sharpener housing 2 protrudes freely, while it the closed position 15 abuts the outer circumference of the sharpener housing 2. The cleaning rod 37 may alternatively be integrally formed on the spray housing 2 or be pluggable attached to the protective cap 4 or the spray housing 2. The sharpener 1 further optionally includes a mortar former (not shown) for rounding off the pen nib during the sharpening operation, as commonly found in cosmetic sharpeners.

LIST OF REFERENCE NUMBERS

1

Sharpener

2

sharpener housing

3

peeling device

4

protective cap

5

film hinge

6

housing wall

7

Housing end wall

8th

insertion

8th'

insertion

9

housing longitudinal axis

9 '

Pencil guide axis

10

cap wall

11

open end

12

cap axis

13

closed end

14

swivel axis

15

closed position

16

open position

17

Cap interior

18

inner wall

19

Area

20

Housing interior

21

sharpener body

22

paring knife

23

Pin guide sleeve

24

drilling

25

axis

26

knife holder

27

bearing surface

28

cutting edge

29

top

30

bottom

31

cutting slot

32

opening

33

outer edge

34

head Start

35

incision

36

closing element

37

Swab

Claims (14)

Sharpener (1) having a sharpener housing (2) which receives a peeling device (3) for a pin to be sharpened and which has an insertion opening (8) for the pin arranged substantially concentrically with a pin guide axis (9 ') of the peeling device (3) and with a protective cap (4) provided for placement on the pin and having an open end (11) and a closed end (13) opposite a cap axis (12),
characterized,
that the sharpener housing (2) is so pivotally connected to the protective cap (4), that the protective cap (4) relative to the sharpener housing (2) in a closed position, in which the protective cap (4) the insertion opening (8) of the sharpener housing (2 ), as well as in an open position (16), in which the insertion opening (8) of the sharpener housing (2) is released for insertion of the pin, is pivotable. Sharpener (1) according to claim 1,
characterized,
that in the closed position (15), the cap axis (12) is arranged substantially co-linear with the pin guide axis (9 '), wherein the open end of the protective cap (4) facing away from the sharpener housing (2). Sharpener (1) according to claim 1 or 2,
characterized,
that the sharpener housing (2) and the protective cap (4) projected along the pin guide axis (9 ') or the cap axis (12) have substantially the same cross-sectional shape. Sharpener (1) according to one of claims 1 to 3,
characterized,
in that the sharpener housing (2) and the protective cap (4) are pivotable relative to each other about a pivot axis (14) oriented tangentially with respect to the pin guide axis (9) and the cap axis (12). Sharpener (1) according to one of claims 1 to 4,
characterized,
in that the sharpener housing (2) and the protective cap (4) are connected to one another in an articulated manner by means of a film hinge (5). Sharpener (1) according to one of claims 1 to 5,
marked by
at least one closing element (36) which is designed to releasably fix the sharpener housing (2) and the protective cap (4) in the closed position (15) to one another. Sharpener (1) according to claim 6,
characterized,
in that the or each closing element (36) is formed by a projection (34) which is formed on the closed end of the protective cap (4) so as to act in the closed position (15) forming a radial movement relative to the pin guide axis (9 ') Force fit in the insertion opening (8) of the sharpener housing (2) engages. Sharpener (1) according to one of claims 1 to 7,
characterized,
in that the peeling device (3) comprises a sharpener body (2) which is removably inserted into the sharpener housing (2) and on which a peeling blade (22) is held in an inclined position relative to the pin guide axis (9 '). Sharpener (1) according to claim 8,
characterized,
in that the sharpener body (2) can be removed from the sharpener housing through the insertion opening (8). Sharpener (1) according to claim 9,
characterized,
in that the sharpener body (2) has at least one protrusion (34) projecting approximately radially with respect to the pin guide axis (9 ') and lying in a substantially complementary shaped cut (35) of the sharpener housing (2). Sharpener (1) according to one of claims 8 to 10,
characterized,
in that the peeling blade (22) has a blade width tapering in the direction of the pin guide sleeve (23). A sharpener (1) having a sharpener body (21) having a bore (24) defining a pin guide channel, and a peeling knife (22) biased against a pin guide axis (9 ') of the pin guide channel against a knife holder (26) of the pin guide Sharpener body (21) is mounted so that it projects with a cutting edge (28) in a cutting slot (31) of the sharpener body (21),
characterized,
in that the peeling blade (22) has a blade width tapering in the direction of an insertion opening (8 ') of the bore (24). Sharpener (1) according to claim 12,
characterized,
in that an outer edge (33) of the peeling blade (22) lying opposite the cutting edge (28) is chamfered or rounded at least in one region facing the insertion opening (8 ') of the bore (24). Sharpener (1) according to claim 12 or 13,
marked by
a form of knife holder (26) adapted to the paring knife (22).

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