CN2297844Y

CN2297844Y - Labour-saving gardening shears

Info

Publication number: CN2297844Y
Application number: CN 97234319
Authority: CN
Inventors: 王锰墩
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-17
Filing date: 1997-04-17
Publication date: 1998-11-25
Anticipated expiration: 2007-04-17

Abstract

The utility model relates to a pair of labour-saving gardening shears by using a connecting rod type lever to save labour. The utility model is mainly characterized in that a blade holder is pivoted with a driven rod, the lower end of the point of the driven rod is additionally provided with a drive rod, and the middle section of the drive rod is connected with the end of the driven rod by a connecting rod. By using the drive rod to match with the connecting rod, the driven rod is controlled to drive a blade to cut. The utility model can be used for various gardening shears, such as a pruner, scissors, hedge shears, etc. The utility model can be suitable for using by women or puny persons, and the utility model has the advantages of indefatigability, no volume increase and high practicality.

Description

Labor-saving gardening scissors

The utility model relates to a kind of orchard shears, refers in particular to the labor-saving gardening scissors that has utilized lever principle.

In the process of growth of general trees, if too luxuriant branches and leaves are not pruned, not only can influence fruit growth and attractive in appearance, easily rolling over drops injures the pedestrian because of high wind blows simultaneously, therefore regularly the pruning leaf is a necessity job of horticultural gardening, cause mixed and disorderly uncultivated scene to avoid branches and leaves to grow wild, attractive in appearance to keep the flower garden.

And the work nature of trimming leaf must can not by pruning tool, difference at its purposes and place, be to develop to be fit to " secateurs ", the patterns such as " averruncators " that is suitable for " hedge clipper " of pruning large stretch of hedge and is used in the pruning of eminence branches and leaves that general flowers and trees are pruned, the consumer can choose proper tools according to individual demand.

With regard to the structure structural design of aforesaid secateurs, hedge clipper or averruncator, generally only consider its " tongs " function emphatically, and do not consider for the operation ease aspect more, cause generally all is that shearing force is operated effort enough by force, be not suitable for general women or more small and weak people's use, thereby influence its whole practical value and market competitiveness.

Studying carefully the reason of its " operation effort ", mainly is to be that the improper institute of its tongs control structure design causes.Tradition tongs instrument system directly extends lever in the other end integral type of its tongs blade, pushes lever by two hands and drives the tongs blade and merge and carry out tongs, the mode of this direct application of force, effort comparatively that yes.

See also averruncator commonly used as shown in Figure 1, the imperfection part of traditional structural design is described.As shown in the figure, it mainly is in a tool rest 10 that is provided with suitable shape cutting edge 11 blade 12 that is pivoted, and be pivoted with a follower lever 13 at tool rest 10 rear sides, at follower lever 13 nearly middle section positions one connecting rod 14 and blade 12 terminal pivot knots are set again, sentence a torque spring (not shown) as reset components at follower lever 13 and tool rest 10 pivots knot, and the collar 15 that extend tool rest 10 lower ends can be for being connected the body of rod 16 that a suitable length is set, respectively be provided with assembly pulley 17 at collar 15 and follower lever 13 ends in addition, 18 for tying up the stay cord 19 that is located on the collar 15 around the home, pullling these stay cord 19 controlled follower levers 13 ends has a down dip, and then the connecting rod that is pivoted of its stage casing of interlock 14 drives blades 12 and produces to execute and change and to the edge of a knife 11 clampings of tool rest 10, thereby reaches the function of tongs.Wait to discharge stay cord 19, then borrow torque spring to move and impel follower lever 13 to reset, make it to reply the kenel that end is faced upward, promptly interlock blade 12 is with cutting edge 11 and separates open configuration.

From above-mentioned averruncator structure commonly used, be with stay cord 19 direct pull follower levers 13 control blades 12 tongs.Owing to be subjected to the unsuitable excessive restriction of overall volume, therefore the length of its follower lever 13 can be not oversize, force arm is lacked and is the direct application of force like this, so the user must spend the clamping of bigger strength ability stretchy follower lever 13 interlock connecting rods 14 with control blade 12, for women or more small and weak people, be inapplicable, even strong-bodied people also can't use for a long time, cause its practicality good inadequately, this problem can not solve by the length that increases follower lever 13 merely, because the excessive both inconvenience of volume collection is also inconvenient when using operation.

The purpose of this utility model is to provide a kind of labor-saving gardening scissors, can carry out tongs with less power, is suitable for various crowds' uses and convenient collection.

The utility model is achieved in that its design mainly is the blade that is pivoted on tool rest, and be pivoted with a follower lever by its relative position relation that can change blade and tool rest cutting edge of having a down dip or face upward at the tool rest rear side, this follower lever front-end position and blade end pivot knot, collude between follower lever end and the tool rest and be provided with a back-moving spring, be characterized in: also be provided with the drive link and the connecting rod that constitute lever construction, the below of the follower lever drive link that is pivoted is pivoted on the tool rest, between the end of the stage casing of drive link and follower lever, connecting rod is set, when the drive link end has a down dip, drivening rod interlock follower lever; The long chute of activity remaining in the time of can providing the blade tongs to pivot is provided at itself and blade pivot part position place follower lever.The utility model can be applicable to averruncator, secateurs or hedge clipper.

According to said structure, we can find the utlity model has following advantage: the drive link that (1), utilization are located to set up below the follower lever that is pivoted on the tool rest, the suitable binding that cooperates a connecting rod that drive link and follower lever are carried out, make it on to the control of follower lever and blade, form a kind of link-type lever construction, reach operation effortlessly.(2) province's force mode of forming of the link-type lever construction that constitutes by drive link and connecting rod can be applicable to various orchard shearses such as secateurs, hedge clipper and averruncator, thereby improves the practicality and the convenience of various orchard shearses.(3) this orchard shears can be fit to women or more small and weak people and use, simultaneously under long-time operation also than indefatigability.(4) cause the variation of volume owing to the length that needn't increase follower lever, so the unlikely convenience that influences its collection and operation.

Describe the utility model in detail below in conjunction with accompanying drawing.

Fig. 1: the structural representation that is averruncator commonly used.

Fig. 2: be the STRUCTURE DECOMPOSITION schematic diagram that the utility model is applied to averruncator.

Fig. 3: the textural association that is the utility model averruncator concerns schematic diagram.

Fig. 4: the structure action relationships schematic diagram that is the utility model averruncator.

Fig. 5: be the schematic diagram (clamping state) that the utility model is applied to secateurs.

Fig. 6: be the schematic diagram (open configuration) that the utility model is applied to secateurs.

Fig. 7: be the schematic diagram that the utility model is applied to hedge clipper.

Description of reference numerals is as follows:

10-tool rest 11-cutting edge

12-blade 13-follower lever

14-connecting rod 15-collar

The 16-body of rod 17,18-assembly pulley

19-stay cord 20-tool rest

21-cutting edge 22-blade

The long chute of 23-follower lever 231-

24-back-moving spring 25-drive link

26-connecting rod 27-stay cord

30-tool rest 31-lever

32-blade 33-follower lever

The long chute 34-of 331-connecting rod

35-drive link 40-tool rest

41-lever 42-blade

43-follower lever 44-connecting rod

45-drive link 46-lever

Consult Fig. 2 to Fig. 4, be the embodiment that the utility model is applied to averruncator, it mainly is the blade 22 that is pivoted in tool rest 20 front sides that are provided with suitable shape cutting edge 21, and be pivoted with a follower lever 23 at tool rest 20 rear sides, be provided with a long chute 231 and blade 22 terminal pivot knots at follower lever 23 front-end positions, between follower lever 23 ends and tool rest 20, collude in addition and be provided with a back-moving spring 24, the relative position relation that can change blade 22 and the cutting edge 21 of tool rest 20 that has a down dip or face upward by follower lever 23 carries out tongs, it is characterized in that: tool rest 20 be pivoted follower lever 23 places below set up a

drive link

25,26 bindings of one connecting rod are set between the end of the stage casing of this drive link 25 and follower lever 23 are the interlock state, when imposing external force (using stay cord 27 as shown in the figure) control drive link 25 ends and have a down dip, through of cutting edge 21 clampings of connecting rod 26 interlock follower levers 23 control blades 22 to tool rest 20, after waiting to discharge drive link 25, utilize elastic recovery drawing follower lever 23 ends of back-moving spring 24 to face upward, simultaneously interlock blade 22 breaks away from the cutting edge 21 of tool rests 20 and open-shaped, drive link 25 is faced upward reset, finish its whole functional structures and operation like this.

In the design of aforementioned structure, here, the lever construction that drive link 25 and connecting rod 26 constitute, when tongs, have a down dip with stay cord 27 pulling drive links 25 ends, again by connecting rod 26 interlock follower levers 23, like this, moment and component effect that lever transmission by drive link 25 and connecting rod 26 produces, so can drive blade 22 with lighter power carries out tongs, can be fit to women or more small and weak people's use, and cause long-time operation to be easy to tired problem, it be used in the operation in reality have splendid practicality because of it is comparatively laborsaving and unlikely.

Form and operator scheme according to aforesaid structure, the utility model also can be applicable to general secateurs and hedge clipper.Be the embodiment that is applied to secateurs as shown in Figure 5 and Figure 6, it mainly is the movable blades 32 that is pivoted in the lever 31 of integral type and the appropriate position between the tool rest 30, one end of blade 32 and the follower lever 33 pivots knot that is hubbed on tool rest 30, required activity remaining when long chute 331 being set pivoting with the position of blade 32 pivots knots on the follower lever 33 so that blade 32 tongs to be provided, be provided with a spring (not shown) between follower lever 33 and the tool rest 30, the end of follower lever 33 is another drive link 35 pivots knot to be pivoted on a connecting rod 34 and the tool rest 30 then, is coated with one deck plastic cement lever on this drive link 35.When pushing the lever of drive link 35 like this, connecting rod 34 follower levers 33 drive blade 32 to tool rest 30 clampings, carry out tongs, constitute a Labour saving branch shears.

Be illustrated in figure 7 as the embodiment that the utility model is applied to hedge clipper, tool rest 40, lever 41 and blade 42 are done the lengthening design, the relation of the relation of its blade 42 and follower lever 43 and follower lever 43 and connecting rod 44, drive link 45 and the tactic pattern of secateurs are roughly the same, add a long lever 46 at drive link 45 ends, control follower lever 43 by lever 46 drive drive links 45 and connecting rod 44 and do the tongs action with blade 42, as a same reason, owing to set up drive link 45 and connecting rod 44, become a kind of labour-saving hedge clipper.

In sum, the lever construction that the utility model utilizes drive link and connecting rod to constitute, according to lever principle, make it under the situation that does not change follower lever length, structure that can be commonly used is laborsaving over half at least, become a kind of various user's operations and more tireless labour-saving orchard shears of being fit to, make it more practical.

Claims

1, a kind of labor-saving gardening scissors, its design mainly is the blade that is pivoted on tool rest, and be pivoted with a follower lever by its relative position relation that can change blade and tool rest cutting edge of having a down dip or face upward at the tool rest rear side, this follower lever front-end position and blade end pivot knot, collude between follower lever end and the tool rest and be provided with a back-moving spring, it is characterized in that: also be provided with the drive link and the connecting rod that constitute lever construction, drive link is pivoted below the follower lever that is pivoted on the tool rest, between the end of the stage casing of drive link and follower lever, connecting rod is set, when the drive link end has a down dip, drivening rod interlock follower lever.

2, labor-saving gardening scissors according to claim 1 is characterized in that the long chute of activity remaining in the time of can providing the blade tongs to pivot is provided at itself and blade pivot part position place follower lever.