CN85105012A - Grafting knife - Google Patents

Abstract

A kind of grafting knife has a handle 2 with a head 3, and head 3 is connected with bearing pin with a cutter device 5.Cutter device 5 has a cutting part 6 that is generally V-arrangement, and its side is propped up sheet and linked a supporting plate 9 respectively, and guide lug 11 upwards bent towards handle before this supporting plate 9 had an operation, makes supporting plate be easy to move on the stem that will cut.Supporting plate helps to cut a uniform ditch of the degree of depth.And the cutter device that bearing pin connects can be selected the degree of depth of the ditch that will cut.

Description

Grafting knife

The present invention relates to the grafting knife that a kind of grafting tree and shrubs is used.

From DE 157072 is known a kind of grafting knife arranged, it has a V-arrangement cutter, and there is supporting plate both sides, but this cutter more complicated, and makes the scarfing of a degree of depth unanimity on the surface that can not together lie prostrate.The present invention attempts to improve this situation.

According to the present invention proposes a kind of grafting knife, it has a long handle and a cutter that is generally V-arrangement thereon attached, described cutter all has supporting plate in every side that it cuts sword, it is characterized in that, the u shape head of handle connects cutter device as support member with bearing pin departing from the position of handle longitudinal axis, cutter device cut sword facing to the y direction of handle, this supporting plate that cuts the every side of sword has been stipulated the depth capacity of the ditch that cutter may cut out, like this, when drawing this u shape bar head with handle, just can make described cutter device be convenient to cut a uniform ditch of the degree of depth.

The gathering end that the profile of cutter device preferably makes V-arrangement cut two sheets of sword is connected to each other with an arcuate part.

And V-arrangement cuts the flared end of two sheets of sword should link corresponding supporting plate with a connection piece respectively, and the length of this connector has partly determined the depth capacity of described ditch.

The handle head is preferably a shape of falling u, make head link handle with the bottom of u shape, relative two support arms of this u shape should be along its length direction bending, sweep is parallel to the longitudinal axis of handle and the direction that handle longitudinal axis is left in sensing substantially, crank section that is pressed on the corresponding supporting plate of each self-forming, the interior spacing between relative two support arms of u shape matches with the olo of therebetween connector.

Link together reliably with bearing pin between relative two support arms of each connector of cutter device and u shape head, this bearing pin connects and should realize with a pin of the crank section that passes each connector and relative two support arms of u shape head.

Each supporting plate preferably laterally stretches out from coupled fitting, simultaneously to the direction of described handle longitudinal extension backward.

Guide lug should upwards bend towards handle before the operation of each supporting plate, promptly cuts the arcuate part of sword dorsad, makes supporting plate be easy to move on the stem that will cut.

Swing around bearing pin near being convenient to cutter device with the bowed shape that is pressed in the crank section on the corresponding supporting plate.

Cutter device is preferably resilient.

The present invention will be described referring now to appended each figure, wherein:

Fig. 1 represents the perspective view according to a grafting knife of the present invention;

Fig. 2 is the perspective view of the knife rest shown in Fig. 1;

Fig. 3 is the perspective view of the cutter device shown in Fig. 1; And,

Fig. 4 is the end view of the grafting knife in the operation.

In each figure, the same parts of identical numeral.

At the grafting knife shown in each figure one cutter holder device 1 is arranged, cutter holder device is made of a long handle 2, and links an end of handle 2 with a u shape 3 a usefulness bent angle 4.Head 3 is departing from the position of handle 2 longitudinal axis with bearing pin connection and support cutter device 5.

With reference to Fig. 3, cutter device has a cutting part 6 that is generally V-arrangement in detail, and wherein the gathering end of each sheet 7 is connected to each other with an arcuate part 8.The top flared end of each sheet 7 is roughly parallel to each other, and the upper end of each sheet 7 (from Fig. 1 and Fig. 3) links corresponding supporting plate 9 with a connection piece 10 respectively, and connector 10 stretches to cutter downwards, makes V-arrangement cut sword and connector 10 forms an inversed W-shape together.Supporting plate 9 laterally stretches out from coupled connector 10 respectively, extends to handle 2 backwards simultaneously.Guide lug 11 upwards bends towards handle 2 before the operation of each supporting plate, helps supporting plate to move on the stem that will cut.

The cutter holder device that draws in detail in Fig. 2 has the head 3 of a shape of falling u, and relative two support arms 31,32 of this u shape head interconnect by bottom 33, and bent angle 4 is linked in bottom 33.Two support arms 31,32 all upwards curve crank-like after one section length, sweep is parallel to Handle axis substantially and points to the direction of leaving handle longitudinal axis, and one of each self-forming is pressed in the crank section 34 on the corresponding supporting plate 9.Interior spacing between two arms 31,32 matches with the olo of the connector 10 of cutter device.Cutter device connects u shape head by a pin 40 bearing pins, and pin 40 passes each crank section 34, and adjacent connector 10 and the top vertical component that cuts sword 6 can relatively rotate cutter device and u shape head, and camber is done by the bottom of each crank section 34 for this purpose.

The axis normal of pin 40 is in the longitudinal axis of handle 2.

As shown in Figure 4, when operation, on the stem 50 that will cut, draw grafting knife in the direction of arrow A, in the power that vertically applies of cutter device 5 in handle, make and cut sword 6 and on stem, cut out a ditch, the depth capacity of this ditch is by the distance decision between the bottom surface of the lowermost portion heel rest 9 that cuts sword 6, and supporting plate 9 helps to cut a uniform ditch of the degree of depth.In Fig. 4, handle 2 has been applied a light pressure, cutter device is clockwise rotated, stem 50 is followed the sweep of each supporting plate 9 and is cut sword 6 and contacts, and will form a shallow ridges like this on stem 50.If apply bigger pressure at handle 2, so, cutter device will rotate counterclockwise with respect to the situation of Fig. 4, and the smooth lower surface of supporting plate 9 will contact with stem 50, and will cut out a darker ditch.

This shows, the invention provides a kind of grafting knife, can be with its cutting and can not influence the degree of depth of ditch on the surface that rises and falls, make trench depth very even, and this grafting knife has a rotating cutter device, Qie Ge the degree of depth can be regulated like this, and maximum depth of cut depends on the relative depth of supporting plate 9 bottom surfaces and cutting part 6.

Cutter device can be shaped with resilient sheet material and form, or forge into any suitable style, though better realizing that with a pin rotating shaft between cutter device and the head connects among embodiment at this, on the contrary this connection also can be used in instead a convex of the outer surface of each connector 10 follow crank section 34 inner surface respective card slot or realize.

Claims (10)

1, a kind of grafting knife, it has a long handle (2) and a cutter device (5) that is generally V-arrangement is attached thereto, described cutter device has supporting plate (9) in each side of cutting sword (6), it is characterized in that, head (3) connects cutter device (5) with bearing pin on a position of the longitudinal axis that departs from handle (2), cutter device cut the longitudinal axis of sword (6) towards handle, the supporting plate (9) that cuts each side of sword has been stipulated the depth capacity of the ditch that cutter device may cut out, like this, when this head was spurred by handle, described supporting plate helped to cut out a uniform ditch of the degree of depth.

2, a kind of grafting knife according to claim 1 is characterized in that, (the gathering end that its V-arrangement cuts two sheets of sword that is shaped as of (5) is connected to each other by an arcuate part (8) cutter device.

3, a kind of grafting knife according to claim 2, it is characterized in that, to cut the flared end of two arms of sword continuous with a corresponding supporting plate by a connection piece (10) respectively for its V-arrangement that is shaped as of cutter device, and the length of connector 10 partly determines the depth capacity of top described ditch.

According to the described a kind of grafting knife of the arbitrary claim in front, it is characterized in that 4, head (3) is a shape of falling u, this head is linked on the handle with the bottom of u shape.

5, a kind of grafting knife according to claim 4, it is characterized in that, relative two support arms of u shape head are all along its length direction bending, sweep is parallel to the longitudinal axis of handle and the direction that handle longitudinal axis is left in sensing substantially, one of each self-forming is pressed in the crank section (34) on the corresponding supporting plate (9), and the interior spacing between relative two support arms of u shape head matches with the olo of therebetween connector.

6, a kind of grafting knife according to claim 5 is characterized in that, connects (40) by two connectors (10) with the bearing pin between the crank section (34) of relative two support arms of u shape head cutter device and u shape head are assembled together reliably.

7, a kind of grafting knife according to claim 6 is characterized in that, each supporting plate laterally stretches out from coupled connector, simultaneously also to the direction longitudinal extension of described handle (2).

8, a kind of grafting knife according to claim 3 is characterized in that, guide lug (11) upwards bends towards handle before the operation of each supporting plate, cuts the arcuate part of sword dorsad, makes supporting plate be easy to moved on the stem that cuts.

9, a kind of grafting knife according to claim 5 is characterized in that, near helping cutter device to swing around bearing pin with the shape that is pressed in the crank section (34) on the corresponding supporting plate.

10, according to the described a kind of grafting knife of the arbitrary claim in front, it is characterized in that cutter device is resilient.

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