CN2291783Y

CN2291783Y - Shears for gardening

Info

Publication number: CN2291783Y
Application number: CN 97203406
Authority: CN
Inventors: 黄绣足
Original assignee: SHANGRMENG ENTERPRISE CO Ltd
Current assignee: SHANGRMENG ENTERPRISE CO Ltd
Priority date: 1997-04-14
Filing date: 1997-04-14
Publication date: 1998-09-23
Anticipated expiration: 2007-04-14

Abstract

The utility model provides a pair of shears for gardening, which comprises a fixed jaw clamp, a movable jaw clamp, a braking piece and two grab handles, wherein the movable jaw clamp is pivoted on the fixed jaw clamp, a cutting edge section is arranged on one side of the movable jaw clamp corresponding to the fixed jaw clamp, one end of the braking piece is pivoted on the fixed jaw clamp, the other end of the braking piece is provided with a sliding slot with a scheduled length corresponding to one end of the movable jaw clamp, a pin joint piece is connected with one end of the movable jaw clamp together and the two grab handles are respectively connected to the tail end of the fixed jaw clamp and the free end of the braking piece. Thus, when the two grab handles are correspondingly opened and closed, because of the change of the position of the pin joint piece on the inner side of the sliding slot, the length of a force applying arm can be effectively changed and the labour saving efficiency can be achieved.

Description

Shears for gardening

The utility model is relevant with horticultural apparatus, is meant a kind of Shears for gardening (two) with laborsaving effect especially.

Known to look-ahead technique, the chiasma type scissors that generally generally is the X type in order to the Shears for gardening of pollard, it is for people to use when pruning thicker branch, for having the preferable effect of exerting oneself, except the application of force of user's palpus increase to its lever, another way is designed to the pivoting point and the distance between lever (being force arm) at its blade position longer; When the handle designs of Shears for gardening is oversize, make more labour-saving effect of operator though can reach, also will increase the weight of lever, make the burden of operator's both hands on the contrary, and then influence the handling of this Shears for gardening; And oversize if handle designs gets, the volume of tool integral body also will increase relatively, and it is inconvenient that collection also becomes.

In recent years, there is the dealer that Shears for gardening is designed to as shown in Figure 1 structure, wherein more offer a chute 2 on a handle of a knife 1 end of this structure, another handle of a knife 3 can be slided in this chute 2 by set a connection piece 4 on it, and make this handle of a knife 3 produce moving relative to this handle of a knife 1, this kind structural design also can't effectively increase the length of force arm, and the angle that this handle of a knife 1 and handle of a knife 3 are externally opened mutually is bigger, there is no the labour-saving effect.

Main purpose of the present utility model is promptly providing a kind of Shears for gardening (two), and the length of its force arm can change with the action of two lever foldings, to have the labour-saving effect.

For reaching aforementioned purpose, the utility model provides a kind of Shears for gardening (two), and it includes a fixed jaw; One movable jaw is hubbed on this fixed jaw, and a blade part is located at a side of its relative fixed jaw; One brake, be hubbed on this fixed jaw with the one end, end offers a chute of predetermined length to pressing from both sides an end by movable jaw in addition, use for an articulated part can placing this chute inboard to the mode that moves back and forth along this gate shafts, and this articulated part and link together with this activity jaw one end; Two levers are connected to terminal and this brake free end of this fixed jaw.

A kind of Shears for gardening (two) that the utility model provides, it cooperates by this brake and limiting section, can make this be relatively fixed jaw and bigger angle of movable jaw unlatching, and its force arm can change along with the opening and closing movement of this two lever, realistic user demand, and have the labour-saving effect, edge is, the utility model meets the important document of novel patent really, files an application in accordance with the law.

Relevant detailed construction of the present utility model, function and characteristics can be cooperated illustrated detailed description and understood fully by following examples.

Fig. 1 one has used the schematic appearance of Shears for gardening.

Fig. 2 is the combination stereogram of the utility model one preferred embodiment.

Fig. 3 is the three-dimensional exploded view of the utility model one preferred embodiment.

Fig. 4 is the phantom of the utility model one preferred embodiment.

Fig. 5 is the action schematic diagram of the utility model one preferred embodiment, shows the situation that its force arm changes.

Fig. 6 is the action schematic diagram of the utility model one preferred embodiment, shows the variation situation of the maximum opening angle of lever.

At first, see also second to the 4th figure, the Shears for gardening 10 of the utility model one preferred embodiment, it includes a fixed jaw 12, be hubbed at the movable jaw 14 on this fixed jaw 12, an and brake 16 that articulates with this fixed jaw 12 and movable jaw 14 precalculated positions simultaneously, and two

levers

18,20 of being located at this fixed jaw 12 and brake 16 ends respectively.

This fixed jaw 12, be equipped with one first perforation 22 on it, one folded up portion 24 is bent to form in this fixed jaw 12 1 sides, so that this fixed jaw 12 1 side Jie Ding limiting section 26 of curved invaginated type without exception, and on this folded up portion 24 and be equipped with one second the perforation 28, again, these fixed jaw 12 upper ends are more locked and are provided with a chopping block 30.

This activity jaw 14 generally is＜type, and it is 22 corresponding with this first perforation to which is provided with one the 3rd perforation 32, use for a bolt 34 be placed through its two in, and cooperate a nut 36, and should activity jaw 14 and fixed jaw 12 interlockings together; In addition, these activity jaw 14 lower ends also are provided with one the 4th perforation 38, and these activity jaw 14 upper ends also cut that to be provided with a blade part 40 corresponding with this chopping block 30, so that be used for pollard.

This brake 16, generally be long strip-board shape, its upper end is equipped with a pivoted hole 42, these pivoted hole 42 inboards also are provided with an axially extending large diameter portion 44 and a little inside diameter 46, in order to corresponding with this second perforation 28, by a bolt 48 and a nut 50 this brake 16 is articulated with fixed jaw 12, makes the head 52 of this bolt 48 this large diameter portion 44 inboards of can submerging fully; One chute 54 is opened in this position, brake 16 stage casing, and to should the 4th perforation 38, for an articulated part 56, be a bolt, be arranged in the 4th perforation 38 and the chute 54.

This two

lever

18,20 is fixedly arranged on this fixed jaw 12 and brake 16 ends respectively, uses for the user to grip.

Combination by above-mentioned respectively this member, as shown in Figure 5, when this Shears for gardening 10 folds relatively in this two

lever

18,20, the length of its force arm (i.e. the point of application P1 of this lever 18 and this articulated part 56 distance) is L1, when making the lateral deviation commentaries on classics outwardly of this brake 16, can impel this articulated part 56 up to move in these chute 54 inboards when opening outside this lever 18; And when opening outside this lever 18 when the end 58 that makes this brake 16 with this activity jaw 14 is positioned on the same axis, this articulated part 56 will slide to this chute 54 inboard apical margins, and the length of force arm will increase to L2.From the above, the action of in the utility model, opening outside this lever 18, force arm can increase thereupon; Otherwise if this lever 18 action for folding, then force arm can shorten gradually.In addition, the inboard that is positioned at this large diameter portion 44 owing to the head 52 of this bolt 48 does not have and exposes, so it will can not influence the action of this activity jaw 14.

Again, as shown in Figure 6, after outside this lever 18 is positioned on the same axis to the end 58 that makes this brake 16 with this activity jaw 14, this lever 18 still can more extraterrestrial, so that make this brake 16 more towards upper deflecting one angle θ, and the top outer rim that makes this brake 16 is connected to this limiting section 26 upper limbs, at this moment, can open a bigger angle relatively between this fixed jaw 12 and the movable jaw 14.

Of the present utility model being characterised in that: when this brake 16 relatively should activity jaw 14 ends 58 axial court when tilting an angle θ, this fixed jaw 12 is opened maximum angle with movable jaw 14, the branch that can make the operator be convenient to desire to wipe out place its two between, sheared on this two

lever

18,20 and force in; The action that folds along with this lever 18, when the end 58 of this brake 16 and this activity jaw 14 is positioned on the same axis, the force arm of this Shears for gardening 10 is in maximum state (L2), then, the strength that the operator puts on this lever 18 multiply by the moment that this force arm L2 can produce maximum, in other words, at this moment, the operator only need apply less strength can be with these blade part 40 incision branch inboards.And the application of force that continues along with the operator, the degree of depth of these blade part 40 incision branches will be more and more big, and its width of position that breaks in the branch inboard is narrower, thus, this Shears for gardening 10 is also little for the shearing square that branch applied, and these Shears for gardening 10 its force arms of the present utility model meet the demand of the actual operating position of Shears for gardening cutter also for gradually short.

What is particularly worth mentioning is that, in the utility model this limiting section its not necessarily must be designed to pattern described in the previous embodiment, as long as it can make this brake can not be resisted in its inboard deflection smoothly, and the deflection angle of this brake of controlled, promptly meet of the present utility model required.

Claims

1. Shears for gardening, it is characterized in that: it includes:

One fixed jaw;

One movable jaw is hubbed on this fixed jaw, and a blade part is located at its side of this fixed jaw relatively;

One brake, be hubbed on this fixed jaw with the one end, end offers a chute of predetermined length to pressing from both sides an end by movable jaw in addition, use for an articulated part can placing this chute inboard to the mode that moves back and forth along this gate shafts bobbin, and this articulated part and link together with this activity jaw one end;

Two levers are connected to terminal and this brake free end of this fixed jaw.

2. Shears for gardening according to claim 1 is characterized in that: wherein this fixed jaw is provided with a limiting section for the position that this brake one end is pivoted, in order to control the pivoting angle of this brake.

3. Shears for gardening according to claim 2 is characterized in that: wherein this limiting section is to be arranged with recessed in this fixed jaw one side, and the outer rim of this brake one end is connected to the inner edge of this limiting section.

4. Shears for gardening according to claim 1 is characterized in that: wherein more be provided with a chopping block on this fixed jaw, in order to the blade part relative engagement of this activity jaw.