DE8712318U1 - Cutting blade - Google Patents

Description

This. Ref.: K 117/7

Cutting blade

The invention relates to a cutting knife, in particular for cutting floor coverings, with a handle consisting of two shell halves detachably held together by a screw and a knife blade in one length of the handle between the two shell halves, which can be moved and pivoted in the longitudinal direction of the handle by means of a slotted guide around a locking screw that also holds the shell halves together, in two cutting positions emerging from the handle and in a storage position housed in a covered manner in the handle, which knife blade rests in a fixed position on stops on the handle in the cutting and C ' storage positions.

The object of the invention is to improve a cutting knife of this type, known from DE-PS 33 00 730, in a simple manner so that the cutting knife halves are held together securely and stably and do not expand even when the knife blade is subjected to greater loads in the cutting positions.

11' · · ♦

• · · ti .

This object is achieved according to the invention by the features
of claim 1, whereby the
Design features listed in subclaims
represent advantageous further training in task solving.

The subject matter of the invention extends not only
\j on the features of the individual claims, but also on their combination.

The two halves of the handle are
The knife blade area is held together by an additional connecting screw, which ensures a stable connection between the shell halves in the cutting positions of the knife blade, even under higher pressure loads, and prevents the shell halves from expanding and thus the knife blade from slipping in.

/--\ The connecting screw is in a convenient

molded shell port set, which also provides a finger recess for comfortable handling of the
cutting blade.

Furthermore, a holder with a knife wheel is securely fixed in the handle at the length end area opposite the knife blade. Both the knife blade and the knife wheel holder are connected by
molded stops in their positions stable
fixed.

An embodiment example according to the invention is explained in more detail below using the drawing. It shows!

Fig. 1 is a side view of a cutting blade,

Fig. 2 an inside view of a shell half of the cutting knife with knife blade,

Fig. 3 a top view of the cutting blade in the disassembled state of the two shell halves.

The cutting knife, in particular for cutting floor coverings, has a handle (2) consisting of two shell halves (1) held together in a detachable manner and has a locking screw in one longitudinal end of the handle (2) between the two shell halves (1).

(3) in the longitudinal direction of the handle by means of a slot guide

(4) movable and pivotable knife blade (5) which can be locked in two cutting positions emerging from the handle (2) and in a storage position covered in the handle (2).

The knife blade (5) has two oppositely directed cutting edges, namely a hook cutting edge (5s) at one end of the length and a straight cutting edge (5b) at the other end of the length, and a slot-shaped slot running in the longitudinal direction of the blade is cut out in the knife blade (5) as a slot guide (4).

The two shell halves (1) are connected by a screw (6) located in one end of the handle length.

■ · Kit

Nut and at the other end of the length by the pest adjusting screw (3) with nut (3a).

An additional connecting screw (7) arranged at a distance from the locking screw (3) in the sliding and pivoting area of the knife blade (5) serves to additionally connect the two shell halves (1).

This connecting screw (7) is arranged in a shell extension (9) which is formed outwards at an angle to the locking screw (3) and forms a finger recess (8) on the handle side opposite the cutting side. This shell extension (9) is located in the longitudinal and transverse direction of the handle (2) behind the locking screw (3) and is formed by a curved nose.

The connecting screw (7) passes through one half of the shell (1) and engages the nut inserted in the other half of the shell (1); the connecting screw (6) arranged in the other length end is also provided in accordance with this connecting screw (7).

The locking screw (3) is formed by a knurled screw which passes through one shell half (1) and the slotted guide (4) and engages in the nut (3a) inserted in the other shell half (1).

In the area of the shell extension (9), a knife blade stop (10) is formed on the inside of at least one shell half (1) and a second knife blade stop (11) is formed at a distance from the locking screw (3).

The knife blade stop (10) is formed by an edge of a molded rib (12) and the second knife blade stop (11) is also formed by a molded rib.

Both knife blade stops (10, 11) form a slot (13) for the knife blade (5) between the two shell halves (1).

(14) designates an access recess in the handle (2) for grasping the concealed knife blade (5).

The two shell halves (1) are each made of one piece from plastic and are fixed in position against each other by interlocking projections (15) and receiving holes or bushings (16). A palter (17) with a knife wheel (18) is releasably secured in the longitudinal end of the handle (2) opposite the knife blade (5). This holder (17) has a T-bearing piece (?0) that reaches between the shell halves (1) and behind lugs (19) of the shell halves (1) and is held between the shell halves (1) by a screw (6) with a nut that passes through both shell halves (1) and the T-bearing piece (20).

The long sides of the T-bearing piece (20) located between the shell halves (1) can be equipped with a toothing (21), which creates a non-slip and high connection surface between the shell halves (1) and the bearing piece (20).

I « &igr; ■ · &igr; *

11

II I I

4 *

The knife blade (5) is preferably designed as a snap-off blade to form the straight cutting edges (5b).

The knife wheel (1Θ) is protected in the non-use position by a cover (22) that can be pivoted about its axis of rotation.

The additional connecting screw (7) and the stop edges (10, 11) offset outwards ensure that the knife blade (5) is held in a stable position in the respective cutting position.

The T-bearing piece (20) of the holder (17) and the lugs (19) of the shell halves (1) also ensure that the knife wheel (18) is securely positioned on the handle (2).

(23) denotes molded ribs that provide the knife blade (5) with additional lateral contact surfaces.

Claims (9)

Protection claims 1. Cutting knife, in particular for cutting floor coverings, with a handle consisting of two shell halves held together by a screw and a slot in one longitudinal end of the handle between the two shell halves &Ggr;~\ to also put the shell halves together holding pest adjusting screw in the longitudinal direction of the handle by means of a slotted guide, the knife blade can be fixed in two cutting positions emerging from the handle and in an eighth storage position covered in the handle, which rests in a position-fixed manner on stops of the handle in the cutting and storage positions, characterized in that the two shell halves (1) are connected by an additional, spaced-apart from the locking screw (3) in the sliding and pivoting range of the knife blade (5). connecting screw (7) are held together. ( 2. Cutting knife according to claim 1, characterized in that the connecting screw (7) is arranged in a shell extension (9) which is formed outwards at an angle to the locking screw (3) and forms a pinger recess (8) provided on the handle side opposite the cutting side. 3. Cutting knife according to claims 1 and 2, characterized in that the shell extension (9) is located in the longitudinal and transverse direction of the handle (2) behind the locking screw (3) and is formed by a curved nose. &idigr;'"*« &zgr;&idiagr; • »·· a &igr; , • · · &igr; ■ «&ogr; ti 4. Cutting knife according to claims 1 to 3, characterized in that the connecting screw (7) passes through one shell half (1) and into a the nut inserted into the other half of the shell (1) engages. 5. Cutting knife according to claims 1 to 4, />-i characterized in that the locking screw (3) is formed by a knurled screw which passes through one shell half (1) and engages in a nut (3a) inserted in the other shell half (1). ' 6. Cutting knife according to claims 1 to 5, j characterized in that in the region of the shell Extension (9) on at least one shell half (1) a knife blade stop (10; and at a distance from the locking screw (3) a second knife blade stop (11) are formed, ■&Idigr; which has a knife blade receiving slot (13) l} between the two shell halves (1) free. 7. Cutting knife according to claims 1 to 6, characterized in that a holder (17) with a knife wheel (18) is releasably fixed in the longitudinal end of the handle (2) opposite the knife blade (5). 8. Cutting knife according to claim 7, characterized by _7l «eiehnet that the holder (17) has a between the shell halves (1) gripping, behind approaches (19) of the shell halves (1) gripping TV bearing piece (20) which is soft on its long sides - 3 &bgr; 9. has grooved contact surfaces (21) and is secured between the shell halves (1) by a screw (6) with nut that passes through both shell halves (1) and the T-bearing piece (20). Shield knife according to claims 1 to &thgr;, characterized in that the two shell halves (1) are each formed in one piece from plastic.