CN2135912Y

CN2135912Y - Labour-saving branch shears

Info

Publication number: CN2135912Y
Application number: CN 92219324
Authority: CN
Inventors: 陈立章; 王凤玲
Original assignee: XIADINGJIA GARDENING TOOL FACTORY LONGKOU CITY
Current assignee: XIADINGJIA GARDENING TOOL FACTORY LONGKOU CITY
Priority date: 1992-07-13
Filing date: 1992-07-13
Publication date: 1993-06-16
Anticipated expiration: 2002-07-13

Abstract

The utility model relates to labor-saving branch shears, which are a gardening tool. The labor-saving branch shears are additionally provided with the curvature of the circular arc-shaped shears blade on the basis of the prior art; when the branches are sheared, the 'branch receiving' phenomenon is not easy to occur. The inner surface on the blade side of the upper shears is provided with a small auxiliary blade which can make the shears sharper; the phenomenon of the mutual 'blade nibbling' between the upper shears and lower shears can be avoided; the width of the shears handles can be increased, and the diameter of the belaying cleat spring can be decreased. The labor-saving branch shears is labor-saving and comfortable in the operating process.

Description

Labour-saving branch shears

A kind of power-saving tree pruner.

The utility model is a kind of garden tool set.

The utility model is the innovation transformation that has carried out having matter on the basis of prior art, existing and the similar pruner of the utility model, have following shortcoming: 1, the sword spring degree of pruner circular arc is little, its radius is many more than 50mm, and the branch of flowers and trees is often squeezed from clip and skids off when beta pruning; 2, shearing blade is not sharp, and this is because a side edge is all opened on the sword limit of existing pruner.3, because last lower scissors all opens is single-blade, two cuttves are gnawed shearing blade each other easily when beta pruning.4, scissors is narrow holding the place, general width about 15mm, the fatigue and the pain that work long hours and cause hand.5, it is thicker to make the steel wire diameter of goat's horn spring, and elastic force is excessive, holds effort.6, all be that stop pincers or stop pincers support are are directly forged and pressed in the inner face groove of scissors handle in original technology, this sampling technology is complicated, useless power when useless.

At the deficiency of above-mentioned prior art, we have designed, and a kind of beta pruning is sharp, rapid operation, hold the pruner that comfortable, simplified manufacturing process, materials are economized.

The design finishes like this, last scissors 5, lower scissors 4 is by cutting axle bolt 2, packing ring 1 makes it superimposed with clamp nut 3 and is connected, scissors can open automatically by goat's horn spring 7 or pupa spring 8, tail end at the scissors handle has stop pincers 14, it connects stop pincers support 11 by stop pincers support shaft 12, there is a leaf spring 9 to prop up the tail end of stop pincers, its innovative point is the radius of scissors 5 and lower scissors 4 circular arc swords on having reduced on the basis of prior art, the camber of the shearing blade that forms under such radius strengthens, when beta pruning, just be difficult for causing " telling branch ", simultaneously have a little secondary sword on last scissors 5 sword side inner face sword limits, strengthened the sharpness of scissors, avoided last lower scissors to gnaw the phenomenon of sword each other again, increased scissors the width of holding the place, when work, just be difficult for causing the fatigue and the pain of hand like this, reduced goat's horn spring 7 gauges of wire, the resistance when when beta pruning, just having reduced to hold.Stop is clamped support 11 be riveted on a tail end of cutting, so just saved and in the original prior art stop has been clamped support and forge and press at scissors the complicated technology of inner face by rivet 10 and 13.

Be the formed circular arc sword of going up scissors 5 of radius (R) with 40-45mm for well, the circular arc sword that with 39-44mm is the formed lower scissors 4 of radius (R) is for well.

And be that the formed circular arc sword of going up scissors 5 of radius (R) is best with 44mm, the he arcuate blade that with 43mm is the formed lower scissors 4 of radius (R) is best, both be difficult for taking place " telling branch " phenomenon during in beta pruning at the sword of the circular arc of making under such radius, it is just right that scissors is dehisced, " tell branch " because dehisced greatly easily, dehisced little and can not cut thicker slightly branch.

Cutting the width at the place of holding is good with 20-25mm.

Cutting the width at the place of holding is best with 21mm, too wide materials and the weight that has just increased scissors.

Goat's horn spring 7 gauges of wire are 2mm, so both scissors can be strutted, the unlikely again excessive resistance that causes when holding cutter.

At the little secondary sword that last scissors 5 sword side inner face sword limits are opened, its width is 0.5-1mm.

Advantage of the present utility model is: 1, increased the camber of last scissors 5 and lower scissors 4 circular arc swords, the branch of flowers and trees just is difficult for skidding off from clip when beta pruning like this; 2, have little secondary sword at last scissors 5 sword side inner face swords, so just make scissors 5 have twolip, both can when beta pruning, increase its sharpness, very laborsaving, overcome again and gone up the shortcoming that lower scissors is gnawed sword each other in original technology; 3, owing to increased the width of scissors handle, scissors grip when work

Just pleasant; 4, reduced goat's horn spring 7 gauges of wire and just equaled to have reduced its elastic force, the resistance when also just having reduced scissors grip work; 5, simplified technology greatly in also more original technology of installing of stop pincers.

Fig. 1--1 front view of the present utility model

1--packing ring 2--cuts axle bolt 4--lower scissors 5--and goes up scissors

The standby pupa spring of 6--spring hitch 7--goat's horn spring 8--9--leaf spring

11--stop pincers support 12--stop pincers support shaft 14--stop pincers

Fig. 1--2 end views of the present utility model

1--packing ring 2--cuts axle bolt 3--clamp nut

10.13--rivet

Fig. 2 rearview of the present utility model (mouth-open)

2--cuts axle bolt 3--clamp nut 4--lower scissors

The last scissors 6--of 5--spring hitch 7--goat's horn spring

9--leaf spring 10,13--rivet 12--stop pincers support shaft

14--stop pincers

The utility model structure installs, uses all simple and convenient, and this is in aforementioned and clear in conjunction with the accompanying drawings, so embodiment is omitted.

Claims

1, a kind of power-saving tree pruner, by last scissors 5, lower scissors 4 makes it superimposed with clamp nut 3 and is connected by cutting axle bolt 2 packing rings 1, scissors can open automatically by goat's horn spring 7 or pupa spring 8, tail end at the scissors handle has stop pincers 14, it connects stop pincers support 11 by stop pincers support shaft 12, there is a leaf spring 9 to prop up the tail end of stop pincers, the radius that it is characterized in that scissors 5 and lower scissors 4 circular arc swords on reducing on the basis of prior art, have little secondary sword on last scissors 5 sword side inner face sword limits, having increased this cuts the width of holding the place, reduced goat's horn spring 7 gauges of wire, stop has been clamped support 11 be riveted on the tail end of cutting handle by rivet 13.

2, a kind of power-saving tree pruner as claimed in claim 1 is characterized in that with 40-45mm being that the formed upward scissors 5 circular arc swords of radius (R) are good, is that the formed lower scissors 4 circular arc swords of radius (R) are good with 39-44mm.

3, a kind of power-saving tree pruner as claimed in claim 2 is characterized in that with 44mm being the formed circular arc sword of going up scissors 5 of radius (R) for well, and the circular arc sword that with 43mm is the formed lower scissors 4 of radius (R) is for well.

4, a kind of power-saving tree pruner as claimed in claim 1, it is characterized in that cutting the width at the place of holding is good with 20-25mm.

5, a kind of power-saving tree pruner as claimed in claim 4, it is characterized in that cutting the width at the place of holding is best with 21mm.

6, a kind of power-saving tree pruner as claimed in claim 1 is characterized in that goat's horn spring 7 gauges of wire are 2mm.

7, a kind of power-saving tree pruner as claimed in claim 1 is characterized in that its width of little secondary sword that scissors 5 sword side inner face sword limits are left is 0.5-1mm.