SU1436931A1 - Garden pruner - Google Patents

Abstract

The invention relates to a gardening tool and can be used for pruning branches of orchards and vineyards. The purpose of the invention is to increase the operational properties. The pruner consists of a cutting knife 1 and a shear knife 2, provided with handles. The cutting knife 1 is connected to the shear knife 2 by axis 3 with flats and threaded part 9. Washer 8 is seated on axis 3 without the possibility of rotation, nut 4 is screwed on threaded part 9. The faces 8 facing one another and are nut-shaped. When tightening the nut 4, the toothed surfaces of the nut 4 and the washers 8 interlock with each other, not allowing the securing during operation of the pruner due to joint rotation with the axis 3. 6 кл. (L

Description

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I The invention relates to a garden-garden tool and is intended to cut branches of trees and shrubs.

The purpose of the invention is to improve performance, reduce wear and improve the adjustment of the gap between the blades.

Figure 1 schematically shows the I pruner, General view; figure 2 - I view And figure 1; on fig.Z - section bb nts figure 1; figure 4 - section bb In figure 2; on fig.Z - locked position of the teeth of the washer and nut; 6 shows the position of the teeth of the washer and nut at the moment of adjusting the required clearance between the shears of the shears; 7 of the collapsed position of the handle and the locking mechanism, made in the form of a self-locking gear pair, including a washer 8, mounted on the end of the axis 3 without the possibility of rotation, to a nut 4, a part 9 of the axis 3 screwed onto the thread part, 9 surfaces JO and 11, whereby the spike N of teeth 12 is equal to the required clearance S between the pruning knives, the angle to the edge of the outer face 13 of the tooth is equal to or less than the angle of elevation of the thread axis of the hinge joint 14 of the tooth 14 joint axis,

The mounting of the locking mechanism is carried out as follows.

The swivel axis 3 is installed in the round holes 15 of the cutting and cutting blades 1 and 2, and the washers 8 are put on the flats 16 of the axle shafts in such a way that the toothed surface 10 faces outwards. The nut 4 is then screwed onto the toothed surface 11 to the washer 8 until it is in contact with its toothed surface 10, after which the predetermined clearance S between the blades 1 and 2 is adjusted. Adjustment is made by turning the nut 4, while the tooth that surface of the nut slides along the toothed surface of the washer, When a predetermined gap between the knives is reached, the teeth of the nut and the washers are installed in the valleys of each other and interlock with each other.

Thus, the entire locking mechanism is mounted on the swivel axis, acquiring the possibility of joint rotation with axis 3, since the locking mechanism is not rigidly connected with the knives 1 and 2, the self-unscrewing of the nut 4 prevents the edges 14 of the teeth 12, and if necessary unscrewing the nut is necessary make an effort, a little more effort screwing. At the same time the edges of the teeth

12 nuts and washers, sliding one on top of the other, select the gap between the knives 1 and 2, making it possible to unscrew the nut. The self-unscrewing of the nut is prevented by the fact that the angle of inclination of the edge 14 of the tooth is greater than the angle of elevation of the thread of the axis of the hinge joint.

When screwing the nut, the tooth slides freely over the tooth of the washer,

since the angle of inclination of the upper edges 13 of the teeth is equal to or less than the angle of elevation of the thread of the axis of the hinge joint.

The length of branches offered by the pruner is manufactured similarly to the known pruners.

The execution of the locking mechanism in the form of a self-locking gear pair eliminates the premature replacement of the thread of the hinge joint, improves the adjustment of the necessary clearance between the blades, simplifies the design and manufacturing technology, and reduces the cost of the secateurs by eliminating drilling and threading the knife for the screw of the locking mechanism .

of the invention

Secateurs, including cutting and counter-cutting knives, pivotally connected by an axis with a threaded part, a nut, handles, between which a spacer spring is installed, a fixed position of the handle and a locking mechanism of the hinge joint, characterized in that increase operational properties by reducing and;

and improving the adjustment of pa () of the gap between the knives, the articulated locking mechanism is made in the form of a self-locking toothed pair, including a washer mounted on the end of the axis without the possibility of rotation, having a face toothed surface facing the corresponding face toothed surface that is filled to the nut, moreover, the height of each notch face gear. one

surface is equal to the working gap between the pruning shears, the angle of inclination of the outer end faces of each tooth is equal or less, and the angle of inclination of the lateral radial faces of the teeth is greater than the angle of the thread lift on the threaded part of the wasp.

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Claims (1)

Claim Secateurs, including cutting and anti-cutting knives, articulated by an axis with a threaded part, a nut, handles, between which are installed. on a spacer spring, a beet clamp of the handle and the locking mechanism of the swivel, characterized in that, in order to improve performance by reducing wear 55 and improving the adjustment of the working gap between the knives, the locking mechanism of the swivel is made in the form of a self-locking tooth surface 3 equal to the working gap between the knives of the pruning shear, the angle of inclination of the external end faces of each tooth is equal to or less, and the angle of inclination 5 on the lateral radial edges of the teeth is greater than the angle lifting threads on the threaded part of the axis. ry, including a washer mounted on the end of the axis without the possibility of rotation, having an end gear surface facing the corresponding end gear surface, made on the nut, and the height of each gear end gear 8 ~ 8 figa