Tool handle with end face

Abstract

The invention relates to a knife having a handle (1) made of plastic fastened to a blade, the handle having a first groove (2) open toward the end of the handle, the first groove being closed by an end cap or end disk (5) made of plastic or metal, wherein the end cap / end disk is located in the groove or abuts against the groove, and at least two tongue-shaped bodies (6) parallel to the longitudinal axis A of the handle are integrally formed on the back side of the end cap / end disk, the tongue-shaped bodies extending into a longitudinal recess (8) starting from the first groove and protruding inwardly toward the blade, wherein the inner wall of the longitudinal recess has a plurality of longitudinal ribs (9) made of plastic parallel to the longitudinal axis of the handle and protruding on opposite wall surfaces, and the free end of the tongue-shaped body has at least one tooth (10) or rack on the outside, the tooth / rack being retained by being engaged in the longitudinal rib.

Description

Technical Field

[0001] The present invention relates to a knife having a handle made of plastic fastened to a blade, the handle having a first groove open toward the end of the handle, the first groove being closed by an end cap or end disk made of plastic or metal, wherein the end cap / end disk is located in the groove or abuts against the groove, and at least two tongue-shaped bodies parallel to the longitudinal axis of the handle are integrally formed on the back side of the end cap / end disk, the tongue-shaped bodies extending into a longitudinal recess which starts from the first groove and protrudes inwardly toward the blade. Background Art

[0002] It is known to cover the end of a knife handle with an end cap, the back of which has a pin which engages in a groove at the end of the handle and is held in the groove wall by a protruding projection on the pin (EP 2 503 320 B1). A large pressing force is required to tighten the end cap in the handle groove.

[0003] It is also known to close an end-side opening of a tool handle by means of an end face which engages in the opening and on the inside of which a pin projects and which projects into the opening in a clamping manner. Summary of the invention

[0004] The object of the present invention is to improve a tool of the type mentioned at the outset in such a way that the end cap or the end face can be mounted simply and easily, tolerance compensation is provided and in the process a secure and reliable hold is achieved.

[0005] According to the invention, this object is achieved in that the inner wall of the longitudinal recess has a plurality of longitudinal ribs made of plastic and parallel to the longitudinal axis of the handle and protruding on the opposite wall surfaces, and the free end of the tongue-shaped body has at least one tooth or a rack on the outside, which is retained by being engaged in the longitudinal ribs.

[0006] Such a structure of the end cap or end face allows tolerance compensation and a joining process with minimal effort and this is also done in a cold state without heating. In this case, a secure and reliable hold in the handle end is achieved, even with large dimensional tolerances.

[0007] It is important that the teeth or rack displace the plastic material of the longitudinal ribs by the elastic pressure of the tongue and in this way form a recess in the longitudinal ribs, in which the teeth or rack engages in a form-fitting manner. Therefore, before the end cap or the end face is pushed into the handle end, the longitudinal ribs do not have a recess for the teeth or rack, but the teeth or rack themselves form a recess, in particular an undercut, in the longitudinal ribs by their outward pressure in a self-grooving manner. In this case, the tongue, the teeth and / or the rack consist of a harder material than the plastic material of the longitudinal ribs.

[0008] It is preferably provided that the tongue has at its base a groove or a notch which reduces the cross section of the tongue and increases the elastic bendability of the tongue. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 An embodiment of the invention is shown in the drawing including an axial section of an end plate closing the end of the handle and is described in detail below together with an alternative. DETAILED DESCRIPTION

[0010] The knife blade has an integrally formed elongated projection (Erl) which extends into the plastic knife handle 1. The knife handle has a first opening in the form of a shallow groove 2 at the end facing away from the blade and therefore on its end face, the axis of which is parallel or coaxial to the longitudinal axis of the handle 1 or forms an acute angle of 50 to 70 degrees with the longitudinal axis of the handle 1, so that in the latter case the bottom 3 of the groove 2 is arranged obliquely relative to the longitudinal axis A of the handle.

[0011] The groove 2 is surrounded by an edge 4 protruding toward the end of the handle, and the height H of the edge is 1 / 5 to 1 / 10 of the diameter D of the groove 2. A flat, disc-shaped end plate 5 is positively embedded in the groove 2, and the end plate fills the groove 2 at least near the bottom, wherein the edge 4 protrudes from the disc-shaped end plate 5, so that the thickness of the end plate 5 is less than the height H of the edge 4.

[0012] The visible outer surface of the end plate 5 made of plastic or metal preferably has an embossed or raised pattern, in particular a logo. At least two mutually parallel tongues 6 are integrally formed on the inner side of the end plate 5, which are arranged substantially axially parallel to the longitudinal axis A of the handle and form narrow gaps 7 between them.

[0013] In order to accommodate the two tongue-shaped bodies 6, the plastic material of the handle 1 has a longitudinal recess 8 coaxial with the axis A, and the two tongue-shaped bodies 6 are inserted into the longitudinal recess, wherein the inner wall of the longitudinal recess constitutes two protruding longitudinal ribs 9, which are constructed to be approximately axially parallel to the longitudinal axis A of the handle 1 and are arranged opposite to each other in the longitudinal recess 8.

[0014] Two or more tongues 6 each have teeth 10 or racks on the outside near their free ends, which teeth / racks are pressed into the plastic of the corresponding longitudinal ribs 9 by pushing the material apart when the end plate / end cap with its tongues 6 is pressed into the handle end. In the case of a rack, this rack protrudes on the outside of the corresponding tongue 6 transversely to the longitudinal axis A. In this case, the tongues 6, the teeth or racks 10 are made of a harder material than the plastic material of the longitudinal ribs 9.

[0015] Preferably, the longitudinal recess 8 has a cross-sectional diameter Q which tapers towards the bottom 11 of the longitudinal recess 8, so that the pressure of the teeth 10 or rack on the longitudinal rib 9 increases as the tongue 6 goes deeper into the longitudinal recess 8. A particularly secure hold is achieved when the teeth or rack form an undercut groove transversely in the longitudinal rib 9.

[0016] The longitudinal ribs 9 do not have grooves for the teeth 10 or rack of the tongue 6, but rather the teeth 10 or rack of the tongue 6 form their respective grooves in the longitudinal ribs 9 through their elastic pressure acting on the longitudinal ribs 9, wherein the tongue maintains its pressure on the longitudinal ribs 9 after the end plate / end cap is pressed into the end of the handle, so that the size of the self-formed groove increases over time and the retention is improved.

[0017] The tongues 6 can each have a material reduction (cutout 12 or groove) in their base region close to the end disk 5 in order to determine the strength of the spring force of the tongues in this way.

[0018] The end plate / end cap 5 together with its tongue 6 is made of metal or of plastic. In the latter case, the plastic of the tongue, the teeth and / or the rack 10 has a greater hardness than the plastic of the handle 1 and the longitudinal ribs 9.

[0019] Instead of an end plate, an end cap can also be used, which does not engage in the groove 2, but completely covers the end face of the handle end on the outside. On the back side of the end cap, a tongue 6 also protrudes, which extends into the longitudinal recess 8 and is held in the ribs 9 in the same way, respectively, by teeth or racks.

Claims

1. A knife, comprising a handle (1) made of plastic fastened to a blade, the handle having a first groove (2) open toward the end of the handle, the first groove being closed by an end cap or end disk (5) made of plastic or metal, wherein the end cap or end disk (5) is located in the first groove (2) or abuts against the first groove, and at least two tongue-shaped bodies (6) parallel to the longitudinal axis (A) of the handle are integrally formed on the back side of the end cap or end disk, the tongue-shaped bodies extending into a longitudinal recess (8) starting from the first groove (2) and protruding inwardly toward the blade, Features: The inner wall of the longitudinal recess (8) has a plurality of longitudinal ribs (9) parallel to the longitudinal axis (A) of the handle and protruding on the opposite wall surfaces and made of plastic, and the free end of the tongue-shaped body (6) has at least one tooth (10) or rack on the outside, which is retained by being embedded in the longitudinal rib (9) by digging, and the tooth (10) or rack displaces the plastic material of the longitudinal rib (9) by the elastic pressure of the tongue-shaped body (6), and in this way forms a groove in the longitudinal rib, in which the tooth (10) or rack is embedded in a form-fitting manner.

2. The tool according to claim 1, characterized in that: The tongue (6), the tooth (10) or the rack consists of a harder material than the plastic material of the longitudinal ribs (9).

3. The tool according to claim 1 or 2, characterized in that: The tongue (6) has a groove or a notch (12) at its root portion for reducing the cross section of the tongue, and the groove or the notch improves the elastic bendability of the tongue.

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