EP2318182A1

EP2318182A1 - Knife sharpener

Info

Publication number: EP2318182A1
Application number: EP09738472A
Authority: EP
Inventors: Michael Haberstroh
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-29
Filing date: 2009-04-28
Publication date: 2011-05-11
Also published as: TW201000258A; WO2009133459A1

Abstract

A knife sharpener (10) comprises an oblong base body (11) that can be seized with one hand, having a sharpening device (25) for knives or the like that acts transversally to the longitudinal direction of the base body (11) inserted into the longitudinal side thereof. The base body (11) is designed as a clamp-shaped handle having means (24, 30) disposed at the ends for the stable support of the base body (11) on an uneven surface (35). With a knife sharpener (10) of said kind, improved functional safety is achieved in that a suction cup (30) is arranged at one end of the base body (11) as means for the stable support of the base body on an uneven surface (35).

Description

knife sharpener

The present invention relates to the field of home appliances. It relates to a knife sharpener according to the preamble of claim 1.

The prior art discloses a variety of portable, hand-operated knife sharpeners. Thus, DE-LJI-20 2005 008 482 describes a knife sharpening device in the form of a fish which is held by hand to draw a knife transversely to the longitudinal direction through a formed on the underside of the V-shaped grinding opening with therein abrasive sheets , In addition to the actual grinding device additional functions are realized on the device. Thus, the mouth of the fish is designed as a note holder. There is a glass cutter attached to the tail of the fish. On the back of the fish there are slits of various widths, with which glass can be broken. Due to the shape of the fish is a sufficient fixation of the device during grinding difficult to achieve. Accordingly, a bow-shaped additional part is attached to the fish, which serves as a handle and safety device to protect the hands.

From EP-Al-O 578 985 a portable, hand-operated knife sharpener is known, which has an elongate base body with a continuous planar support surface or base plate, in one half of which a handle is formed on the upper side, while in the other half V -shaped grinding openings are arranged with abrasive-coated side surfaces. Additional functions are not provided with this device. Due to the flat support surface slippage of the device on the surface during sharpening is easily possible, thereby endangering the hand and the sharpness result can be affected. Furthermore, a knife sharpener is commercially available from the company Zwilling under the type designation TWIN Sharp, which has a bow-shaped handle, which has surfaces for placement on a flat surface at both ends. At one end of the handle, a V-shaped body is formed which includes a V-shaped grinding opening with sharpening elements disposed therein. Even with this device slipping on the surface with the consequent disadvantages is possible.

Finally, it is known (see, for example, US-A-3,680,264) to provide a cylindrical squeegee with a central squeegee to fix the device on a flat surface. In such a device, however, it is difficult to provide a mechanism with which in the squeegee in a simple manner, a securely fixing negative pressure can be generated.

Knife sharpener, comprising an elongated, engageable with a hand Crundkörper, in one longitudinal side of which acts transversely to the longitudinal direction of the Crundkörpers sharpening device for knives or the like., Characterized in that the base body as a bow-shaped handle with arranged at the ends means for stable support of the main body is formed on a flat surface. Moreover, in such a sharpening device, there is no room to realize additional functions.

It is therefore an object of the invention to provide a knife sharpener, which avoids the disadvantages of the known knife sharpener and is characterized in particular by an easy and safe handling, a stable state on a flat surface and the possibility to integrate various additional functionalities.

The object is solved by the entirety of the features of claim 1. Essential for the inventive solution is that a suction cup is arranged as a means for stable support of the body on a flat surface at one end of the body. An embodiment of the invention is characterized in that the suction cup is pivotally mounted on the base body about a pivot axis lying transversely to the longitudinal direction of the base body, that the suction cup is pivotable in a pivoting range, such that when in contact with the suction cup lying flat on the base body between a first position in which it is almost perpendicular to the pad, and a second position in which it lies on the pad, can be pivoted and that the suction cup is attached to the base body by means of a pivoting mechanism, with the flat-lying on the pad suction cup through the pivoting of the base body in the suction cup creates a negative pressure. By the pivoting mechanism, which cooperates with the handle acting as He-, can be generated with little effort a very effective vacuum in the suction cup. By reaching the end of the pivoting operation of the other end of the handle, the stability of the overall arrangement is additionally increased. This stability is particularly high when, as a means for stable support of the base body on a flat surface at the other end of the base body, a flat support surface is formed.

According to another embodiment of the invention, the sharpening device is arranged on the convex upper side of the curved base body in the vicinity of the suction cup. As a result, the transverse force occurring during the sharpening process can be better introduced into the pad via the suction cup and thus made harmless.

In order to protect the sharpening device when not in use against contamination and to make the handle better usable for other purposes, it is advantageous if the sharpening device is accommodated in a recess in the base body and can be covered by a flush with the main body final cover.

Preferably, the cover is slidably mounted on the main body in its longitudinal direction between two end positions, wherein the sharpening device in one end position on the cover is free and is completely covered in the other end position. The cover can be pushed back as needed, ie when using the sharpening device, without being lost.

It is particularly advantageous for appearance and functionality when the cover is adapted in shape to the outer contour of the body and fits into the outer contour of the base body, when the cover is slidably mounted in guide elements integrally formed on the base body, and if latching means for Snap the cover are provided in the two end positions. Locking in the end positions prevents the cover from shifting unintentionally when the device is being used, thus impairing functionality.

In order to be able to carry out different types of sharpening with the device, it is advantageous if the sharpening device comprises two parting devices arranged one behind the other in the longitudinal direction of the main body, wherein in the first parting device a scraper blade extending in the longitudinal direction of the main body is arranged, and in FIG the second part device two trapezoidal blades offset from each other to form a V-shaped notch for pulling a cutting edge are arranged.

The utility value of the knife sharpener according to the invention can be further increased by integrating into the main body further functions which can be used in the household.

In particular, at the end facing away from the sharpening device of a usable as a can opener cutting mechanism can be provided, which is rotatable about a transverse to the longitudinal direction of the body rotation axis, laterally arranged on the base body and actuated by a rotary lever driving wheel and cooperating with the drive wheel at right angles cutting wheel includes, and at which am Base body at the height of the drive wheel is oriented obliquely to the cutting wheel, in particular bow-shaped, support element is provided.

In addition or alternatively, a cap lifter can be integrated into the main body at the end of the main body facing the sharpening device.

The invention will be explained in more detail with reference to an embodiment in conjunction with the drawings. Show it

1 is a perspective view of an embodiment of a knife sharpener according to the invention with integrated can opener and bottle opener in the open state (part of Figure I a) and in the closed state (part of Figure 1 b).

Fig. 2 shows the knife sharpener of Fig. 1 in plan view from above in the open

Condition (subfigure 1 a) and in the closed state (subfigure 1 b);

Fig. 3 shows the knife sharpener of Figure 1 in a side view in the open state (part of Figure I a) and in the closed state (part of Figure I b).

Fig. 4 in an enlarged detail at the end of the knife sharpener

Fig. 1 arranged suction cup; and

Fig. 5 shows the opened knife sharpener of Fig. 1 a) in the view from the front.

1 shows a perspective view of an embodiment of a knife sharpener according to the invention with integrated can opener and bottle opener in the open state (part of the figure I a) and in the closed state (part of the figure I b). The knife sharpener 10 comprises an elongated, with a hand grippable body 1 1 with round cross-section, which is designed as a bow-shaped handle and has a foot 12 and a head 13 as ends. In the vicinity of the foot 12, a sharpening device 25 for knives or the like acting transversely to the longitudinal direction of the main body 1 1 is inserted on the upper side of the base 1 1, with the aid of which a knife or the like pulled transversely to the longitudinal direction over the base 1 1 can be sharpened.

The sharpening device 25 is housed in a recess 26 or 28 in the base body 1 1 and coverable by a flush with the base body 1 1 final cover 15. The sharpening device 25 comprises two parting devices arranged one behind the other in the longitudinal direction of the main body 1 1 for sharpening, each of which has its own recess 26 or 28. The first part device has a in the longitudinal direction of the main body 1 1 extending scraper blade 27, which is firmly inserted into the base body 1 1 and at the top you can deduct a knife blade lying flat. In the second part of the device two trapezoidal blades 29 are arranged offset from each other and form a V-shaped notch for pulling a cutting edge. By means of a countersunk screw 34 at least one of the trapezoidal blades 29 are replaced.

The cover 1 5, which has transverse ribs on the top for slip resistance, is slidably mounted on the main body 1 1 in the longitudinal direction between two end positions, which are shown in the sub-figures I a) and I b), wherein the sharpening device 25 in the one End position of the cover 1 5 (part of Figure 1 a) is exposed and in the other end position (part I b) completely covered. The cover 1 5 is adapted in shape to the outer contour of the base body 1 1. It lies in a recess 14 and thereby fits into the outer contour of the base body 1 1, so that the handle is in the closed cover 1 5 in the hand well. The cover is slidably mounted in the base body 1 1 in the recess laterally integrally formed guide grooves 16. At the ends of the guide grooves 16 are knob-shaped locking elements 17, 18 provided for locking the cover 15 in the two end positions. For the safe operation of the knife sharpener 10, a good and stable fixation on the base 35 (FIG. 5) is of great importance. As a means for stable support of the base body 1 1 on a flat surface 35 a suction cup 30 is disposed at one end of the base body 1 1 (see also Fig. 4). The suction cup 30 is pivotally mounted on the base body 1 1 about a transverse to the longitudinal direction of the base body 1 1 pivot axis. It can be pivoted within a pivoting range, such that, with the suction cup 30 lying flat on the support 35, the base body 1 1 is disposed between a first position, in which it is almost perpendicular to the base 35 (FIG. 4), and a second position, in which it lies on the base 35 (FIGS. 3, 5), can be pivoted.

By a sufficiently large negative pressure in Saufnapf 30, a particularly good fixation of the knife sharpener 10 on the base 35 can be achieved. This is achieved in that the suction cup 30 is fixed to the base body 1 1 by means of a known pivot mechanism 31, which actively generates a negative pressure in the suction cup 30 by pivoting the base body 1 1 in the suction cup 30 on the pad 35 lying flat on the suction cup. The stable resting of the knife sharpener 10 on the base 35 is further improved by the fact that at the other end (the head 13) of the base body 1 1, a flat support surface 24 is formed (Fig. 3).

Due to the design of the knife sharpener 10 as an elongated handle, it is possible and advantageous to integrate into the knife sharpener 10 further functions which can be used in the household. In the embodiment shown in the figures, an additional device function at the end of the main body 1 1 ₁ facing away from the sharpening device 25 is mounted and integrated on the head 13, a cutting mechanism 19 which can be used as a can opener.

The cutting mechanism 19, which is known per se from the prior art (see, for example, WO-AI-01/40096), comprises a rotatable about a transverse to the longitudinal direction of the base body 1 1 axis of rotation, laterally arranged on the base body 1 1 and driving wheel 21, which can be operated by means of a rotary lever 20 mounted on the other side. With the drive wheel 21 acts at a right angle arranged cutting wheel 23, which cuts open the lid of a can laterally. To guide the cutting mechanism, a bow-shaped support element 22 oriented at an angle to the cutting wheel 23 is provided on the base body 11 at the level of the drive wheel 21, with which the device rests on the can lid. The bow-shaped support element 22 defines the plunge angle with which the cutting wheel is aligned with respect to the upper edge of the can when cutting. The plunge angle ensures in a known manner that the separated can lid can be easily removed from the can body.

In a preferred embodiment of the present invention, the cutting wheel is interchangeable with a grub screw in the body, i. The head of the can opener, attached so that a blunt cutting wheel can be replaced by the user very quickly and easily against a new sharp or a reground cutting wheel. For this purpose, only the set screw is released, removed the blunt cutting wheel from the receiving opening in the body, inserted the sharp cutting wheel and fixed by tightening the grub screw again.

As further functionality, on the knife sharpener 10 at the sharpening device 25 facing end (near the foot 1 2) of the main body 1 1 on the bottom of a capsule lifter 32 integrated into the main body 1 1, which has a correspondingly shaped Kapselheberklinge 33, in the Basic body 1 1 is inserted. The main body 1 1 is used for the cap lifter 32 as a handle and lever.

The main body 1 1 is made of a suitable plastic, preferably by injection molding. The cover 15 is preferably also made of plastic and may be colored from the main body 1 1 deposited or transparent. Scraper blade 27, trapezoidal blades 29, drive wheel 21, cutting wheel 23 and support member 22 are, as well as the necessary axes of rotation, made of metal (steel) or equivalent material.

For sharpening a blade, the knife sharpener 10 is placed with the suction cup 30 in the position shown in Fig. 4 on a flat surface (35 in Fig. 5) and lightly pressed, so that the suction cup 30 rests with its suction surface completely on the base 35 , Then, the base body 1 1 or handle is pivoted to the side until the head 13 of the knife sharpener 10 with the support surface 24 touches on the pad 35. As a result, a powerful negative pressure is generated within the suction cup 30 by the pivoting mechanism 31, which fixes the knife sharpener 10 on the base and makes it insensitive to the transverse movements during sharpening. If the fixation is to be released again, the main body 1 1 is pivoted back into the starting position and the negative pressure is reduced, so that the knife sharpener 10 can be easily removed from the base.

It will be apparent to those skilled in the art from the above disclosure that the knife sharpener of the present invention can also be used on non-horizontal surfaces. So it can be used not only on tables or work surfaces, but also easily on walls or vertical surfaces such as refrigerator doors and the like.

If the knife sharpener 10 is to save space, it can not only be supplied in a drawer, but it can also be attached to the latter vertical surfaces by means of a suction cup and is therefore always ready to hand.

Overall, so with the invention is a stable, easy and safe to use, multifunctional device for the household. LIST OF REFERENCE NUMBERS

10 knife sharpeners

11 basic body

12 feet

13 head

14 deepening

15 cover

16 guide groove

17,18 locking element

19 cutting mechanism (can opener)

20 rotary lever

21 driving wheel

22 supporting element (bow-shaped)

23 cutting wheel

24 support surface

25 sharpening device

26,28 recess

27 Peel off blade

29 trapezoidal blade

30 suction cup

31 swivel mechanism

32 bottle opener

33 capsule lifter blade

34 countersunk screw (hexagon socket)

35 base

Claims

claims

1. Knife sharpener (10), comprising an elongated, with one hand grippable base body (1 1), in one longitudinal side of a transverse to the longitudinal direction of the base body (1 1) acting Schärfvomchtung (25) for knives or the like., Is, the

Base body (1 1) as a bow-shaped handle with arranged at the ends of means (24, 30) for stable support of the base body (1 1) on a flat surface (35) is formed, characterized in that as a means for stable support of the base body a flat pad (35) at one end of the base body (1 1) a suction cup (30) is arranged.

2. knife sharpener according to claim 1, characterized in that the suction cup (30) on the base body (1 1) about a transverse to the longitudinal direction of the base body (1 1) pivot axis is pivotally mounted.

3. knife sharpener according to claim 2, characterized in that the suction cup (30) is pivotable in a pivoting range, such that when on the base (35) flat-lying suction cup (30) of the base body (1 1) between a first position, in which it is almost perpendicular to the base (35), and a second position in which it lies on the base (35), can be pivoted.

4. Knife Sharpener according to claim 2 or 3, characterized in that the suction cup (30) on the base body (1 1) by means of a pivot mechanism (31) is fixed, which in on the pad (35) flat-lying suction cup by the pivoting of the body ( 1 1) in the suction cup (30) generates a negative pressure.

5. knife sharpener according to one of claims 1 to 4, characterized in that as a means for stable support of the base body (1 1) on a flat surface (35) at the other end of the base body (1 1) a flat support surface (24) is formed ,

6. knife sharpener according to one of claims 1 to 5, characterized in that the sharpening device (25) on the convex upper side of the curved base body (1 1) in the vicinity of the suction cup (30) is arranged.

7. knife sharpener according to claim 6, characterized in that the sharpening device (25) in a recess (26, 28) in the base body (1 1) is housed and by a flush with the base body (11) final cover (15) is coverable.

8. knife sharpener according to claim 7, characterized in that the cover (15) on the base body (1 1) is slidably mounted in the longitudinal direction between two end positions, wherein the sharpening device (25) in one end position of the cover (15) is exposed and is completely covered in the other end position.

9. knife sharpener according to claim 8, characterized in that the cover (15) is adapted in shape to the outer contour of the base body (1 1) and in the outer contour of the base body (1 1) inserts, that the cover in on the base body ( 1 1) formed Fühmngselementen (16) is slidably mounted, and that latching means (17, 18) are provided for locking the cover (15) in the two end positions.

10. knife sharpener according to one of claims 1 to 9, characterized in that the sharpening device (25) comprises two in the longitudinal direction of the base body (1 1) successively arranged sub-devices (26, 27 and 28, 29) for sharpening that in the first sub-device (26, 27) extending in the longitudinal direction of the base body (1 1) extending scraper blade (27) is arranged, and that in the second sub-device (28, 29) two trapezoidal blades (29) offset from each other to form a V-shaped notch are arranged for pulling a cutting edge.

1 1. knife sharpener according to one of claims 1 to 7, characterized in that in the base body (11) further usable in the household functions (19, 32) are integrated.

12. knife sharpener according to claim 1 1, characterized in that on the sharpening device (25) facing away from the end of the base body (1 1) as a can opener insertable ble cutting mechanism (19) is provided.

13. knife sharpener according to claim 12, characterized in that the cutting mechanism (19) about a transverse to the longitudinal direction of the base body (1 1) axis of rotation rotatable, laterally on the base body (11) and arranged by means of a rotary lever (20) operable driving wheel (21 ) and a cutter wheel (23) cooperating with the drive wheel (21) in the right angle, and in that on the base body (1 1) at the height of the drive wheel (21), a support element, in particular a bow-shaped support, oriented obliquely to the cutting wheel (23) (22) is provided.

14. knife sharpener according to claim 1 1, characterized in that at the sharpening device (25) facing the end of the base body (1 1) a cap lifter (32, 33) is integrated in the base body (11).