CN110786163A

CN110786163A - Electric pruning shears

Info

Publication number: CN110786163A
Application number: CN201810878462.1A
Authority: CN
Inventors: 徐森严; 应林奇
Original assignee: Zhejiang Dongqiao Precision Machinery Co Ltd
Current assignee: Zhejiang Dongqiao Precision Machinery Co Ltd
Priority date: 2018-08-03
Filing date: 2018-08-03
Publication date: 2020-02-14

Abstract

The invention discloses an electric pruning shear, which comprises a fixed blade assembly and a movable blade which are arranged at the front end of a machine body, wherein the fixed blade assembly comprises a cutter body and a anvil block matched with the movable blade, and a cutter groove for accommodating the movable blade is formed in the anvil block.

Description

Electric pruning shears

Technical Field

The invention relates to an electric pruning shear.

Background

The chinese patent No. 201510072074.0 discloses an electric pruning scissors, which comprises a scissors body, wherein the front end of the scissors body is provided with a movable blade and a fixed blade which are movably connected; the tail end of the scissors body is connected with a shell; a driving device for pushing the movable blade to run is arranged in the shell; a trigger is arranged at the bottom of the shell; the driving device comprises a motor, a planetary gear box, a gear set and a power module; one end of the motor is electrically connected with the power supply module, and the other end of the motor is in transmission with the planetary gear box; the planetary gearbox is in transmission with the gear set. The electric pruning scissors have the characteristics of large transmission energy, low noise, easy replacement of the blades and long service life; however, the fixed blade and the movable blade of the electric pruning shears often cannot clamp the branches to be pruned in the pruning process, the branches easily slip away from the fixed blade and the movable blade and fall off, and the electric pruning shears are inconvenient to operate and time-consuming and labor-consuming.

Disclosure of Invention

The invention aims to solve the technical problem of providing the electric pruning shears capable of better clamping branches.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an electric pruning scissors, is including setting up stationary blade subassembly and the movable blade in the organism front end, stationary blade subassembly include the cutter body and with the hammering block of movable blade looks adaptation, the hammering block on offer and be used for holding the sword groove of movable blade.

The invention further prefers to do the following: the shape of the upper end face of the anvil block is arc-shaped, and the front end of the anvil block is provided with an anti-skid part matched with the cutting edge of the movable blade.

The invention further prefers to do the following: the front end of the anvil block is higher than the middle part of the anvil block.

The invention further preferably adopts the scheme that during pruning, a branch to be pruned is clamped between the movable blade and the anvil block, a first tangent point between the branch to be pruned and the movable blade is connected with a second tangent point between the branch to be pruned and the anvil block to form a reference straight line, a first friction angle formed by a first tangent line at the first tangent point and the movable blade and a first perpendicular line of the reference straight line is α, a first critical friction angle exists between the branch to be pruned and the movable blade, and the degree of α is less than the degree of the first critical friction angle.

According to a further preferred embodiment of the present invention, a second friction angle formed by a second tangent line tangent to the anvil at the second tangent point and a second perpendicular line of the reference line is β, a second critical friction angle exists between the branch to be cut and the anvil, and the number of β degrees is smaller than the number of the second critical friction angle.

The invention further prefers to do the following: the anvil block is fixedly arranged on the cutter body through a locking screw.

The invention further prefers to do the following: the upper end surface of the anvil block is provided with anti-skidding row teeth, so that the friction force of the branches in the horizontal direction is enhanced, and the anti-skidding effect is further enhanced.

Compared with the prior art, the invention has the advantages that the movable blade and the anvil block have unique shape design, the friction force between the branches and the blades is increased, namely α degrees are smaller than the first critical friction angle, β degrees are smaller than the second critical friction angle, the self-locking phenomenon can be generated between the branches and the movable blade and the anvil block, the branches to be cut cannot slide out from the blades, the anti-skid effect is achieved, and the time and labor are saved for pruning the branches.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a partial side view of a first embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a second embodiment of the present invention;

fig. 5 is a partially enlarged view of B in fig. 4.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

First embodiment, as shown in fig. 1 to 3, an electric pruning shears comprises a fixed blade assembly 2 and a movable blade 3 which are arranged at the front end of a machine body 1, the fixed blade assembly 2 comprises a cutter body 21 and an anvil block 22 matched with the movable blade 3, a knife groove 23 for accommodating the movable blade 3 is formed in the anvil block 22, the upper end surface of the anvil block 22 is arc-shaped, an anti-slip part 24 matched with the cutting edge of the movable blade 3 is arranged at the front end of the anvil block 22, the front end of the anvil block 22 is higher than the middle part of the anvil block 22 in height, when pruning is performed, a branch 5 to be pruned is clamped between the movable blade 3 and the anvil block 22, a first friction angle formed by a first tangent line a 34, which is tangent to the movable blade 3, and a first perpendicular line a2 of the reference straight line m is α, a first friction angle formed by a second tangent point, which is tangent to the branch 5 and the movable blade 3, and a second tangent point between the anvil block 22 is smaller than a critical friction angle of a second tangent 3925 b of the anvil block 22, and a second tangent angle of the critical angle is smaller than 25 degrees of a friction angle of a fixed by a second tangent of the anvil block 22, and a critical angle of the friction angle of the critical angle of the anvil block 22, which is 3875.

Example two: as shown in fig. 4-5, the other structures are the same as the first embodiment, except that: the upper end surface of the anvil block 22 is provided with anti-skid teeth 26.

The working principle is that the friction force is increased by adjusting the shape and the angle of the blade so as to achieve the purpose of skid resistance, namely, the degree of α is smaller than the degree of a first critical friction angle, the degree of β is smaller than the degree of a second critical friction angle, a self-locking phenomenon can be generated among the branches, the movable blade and the anvil block, and the branches to be cut cannot slide out of the self-locking mechanism, so that skid resistance is realized.

The electric pruning shears provided by the invention are described in detail, specific examples are applied in the description to explain the principle and the implementation mode of the invention, and the description of the examples is only used for helping to understand the invention and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The utility model provides an electronic pruning scissors, is including setting up stationary blade subassembly and the movable blade at the organism front end, its characterized in that: the fixed blade assembly comprises a blade body and an anvil block matched with the movable blade, and the anvil block is provided with a cutter groove for accommodating the movable blade.

2. An electric pruning shear according to claim 1, wherein: the shape of the upper end face of the anvil block is arc-shaped, and the front end of the anvil block is provided with an anti-skid part matched with the cutting edge of the movable blade.

3. An electric pruning shears according to claim 2, wherein: the front end of the anvil block is higher than the middle part of the anvil block.

4. The electric pruning shears according to claim 3, wherein during pruning, a branch to be pruned is clamped between the movable blade and the anvil block, a first tangent point between the branch to be pruned and the movable blade is connected with a second tangent point between the branch to be pruned and the anvil block to form a reference straight line, a first friction angle formed by a first tangent line tangent to the movable blade at the first tangent point and a first perpendicular line of the reference straight line is α, a first critical friction angle exists between the branch to be pruned and the movable blade, and the degree of α is less than the degree of the first critical friction angle.

5. An electric pruning shear as claimed in claim 4, wherein a second tangent line tangent to said anvil at a second tangent point forms a second friction angle of β with a second perpendicular to said reference line, a second critical friction angle exists between the branch to be pruned and said anvil, and β degrees is less than the second critical friction angle.

6. An electric pruning shears according to claim 2, wherein: the anvil block is fixedly arranged on the cutter body through a locking screw.

7. An electric pruning shears according to claim 2, wherein: the upper end surface of the anvil block is provided with anti-skidding tooth rows.