CN101273695B - Gardening trimmer and blade assembly therefor - Google Patents
Gardening trimmer and blade assembly therefor Download PDFInfo
- Publication number
- CN101273695B CN101273695B CN2008100845591A CN200810084559A CN101273695B CN 101273695 B CN101273695 B CN 101273695B CN 2008100845591 A CN2008100845591 A CN 2008100845591A CN 200810084559 A CN200810084559 A CN 200810084559A CN 101273695 B CN101273695 B CN 101273695B
- Authority
- CN
- China
- Prior art keywords
- blade
- distance
- central shaft
- fore
- aft direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Harvester Elements (AREA)
Abstract
The invention provides a gardening trimmer capable of improving trimming performance of the gardening trimmer. The gardening trimmer of the invention includes: a main body; a pair of blades which are provided at the main body and that the blade at least one side is supported shakably; a power mechanism which is provided within the main body and enables the pair of blades to perform opposite reciprocating angular motion. A plurality of knife edges arrayed in a comby manner is formed on each blade. The plurality of knife edges formed on one side of the blade and the plurality of knife edges formed on the other side of the blade structure a plurality of knife edge pairs which repeatedly cross and depart as the opposite reciprocating angular motion of the pair of blades. Furthermore, the invention is characterized in that at least such a knife edge forming the knife edge pair is present, the distance from a basal end of the knife edge to a shaking central shaft of the blade is a half or less of the distance from a front end of the knife edge to the shaking central shaft of the blade.
Description
Technical field
The present invention relates to be used for the gardening trimmer of the pruning operation of lawn or hedge etc.
Background technology
Record gardening trimmer in the patent documentation 1,2.Gardening trimmer possesses main body and is located at a blade of main body.At least one side blade can joltily be supported with respect to main body.Main body is built-in with and makes at least one side blade carry out the power source of reciprocal angular movement, and is in and can utilizes this power source to make a blade relatively carry out reciprocal angular movement.
Left and right symmetrically is formed with a plurality of blades that pectination is arranged on each blade.It is right to constitute a plurality of blades at a plurality of blades that form on the side blade and a plurality of blades of forming on the opposite side blade.Each blade is right, intersects repeatedly along with the relative reciprocal angular movement of a blade and leaves, thereby cut off lawn or hedge etc. repeatedly.
Patent documentation 1: TOHKEMY 2004-147562 communique
Patent documentation 2: Japanese kokai publication hei 7-194224 communique
For gardening trimmer, according to size that is formed on the blade on the blade and position, it prunes performance bigger variation.(pruning rate of unit interval) can think thus, is formed on one of the size of the blade on the blade and significant design project that the position is gardening trimmer.Yet therefore, about size and the position that is formed on the blade on the blade up to the present useful design guidelines are not proposed, in order to determine that they test repeatedly.
Summary of the invention
The present invention is used to solve the above problems.The object of the present invention is to provide a kind ofly, improve the pruning performance of gardening trimmer wittingly about being formed on the useful design guidelines of the blade on the blade.
By the gardening trimmer that the present invention specialized, possess: main body; Be located at the blade that main body and at least one side tool sword can joltily be supported; And be built in main body and make a blade carry out the relatively back and forth actuating unit of angular movement.Left and right symmetrically is formed with the blade that a plurality of pectinations are arranged on each blade.By a plurality of blades and a plurality of blades that are formed on the opposite side blade that are formed on the side blade, it is right to constitute a plurality of blades that intersect repeatedly along with the relatively back and forth angular movement of a blade and leave.And, it is characterized in that having at least such one to constitute the right blade of blade, the distance of shaking central shaft from the cardinal extremity of this blade to blade is below 0.5 times of the distance of shaking central shaft from the front end of this blade to blade.
For gardening trimmer, its blade that is formed on the blade is long more, and then a blade can be just many more in the amount of the vegetation of once back and forth cutting off in the angular movement.Yet, the amount of once cutting off vegetation when a blade more for a long time, the cut-out load that acts on a blade just becomes big, therefore, reduces the number of times of the reciprocal angular movement that a blade carries out in the unit interval.Hence one can see that, even the blade that forms on blade can not improve the pruning performance of gardening trimmer than length.
Research according to present inventors, in the distance of shaking central shaft from the cardinal extremity that is formed on the blade on the blade to blade, with respect to the distance of shaking central shaft more in short-term, for the amount of the vegetation of cutting off, can control the load that a blade is born from the front end of this blade to blade relatively lessly.And, by the distance of shaking central shaft that will be from the cardinal extremity of blade to blade, be taken as below 0.5 times of the distance of shaking central shaft, thereby can improve the pruning performance of gardening trimmer wittingly from the front end of blade to blade.
Preferably, above-mentioned gardening trimmer has at least such blade right, and the distance of shaking central shaft from the right cut-out starting point of this blade to blade is below 0.5 times of the distance of shaking central shaft from the front end that constitutes the right blade of this blade to blade.
The cut-out starting point right at this said blade be meant, blade promptly constitutes the right blade of blade crosspoint each other to the point of the cut-out that begins to carry out vegetation, begins position to most advanced and sophisticated side shifting from the base end side of blade.
By the distance of shaking central shaft that will be from the right cut-out starting point of blade to blade, be taken as below 015 times of the distance of shaking central shaft, thereby can improve the pruning performance of gardening trimmer reliably from the front end that constitutes the right blade of its blade to blade.
Preferably, above-mentioned gardening trimmer is formed on above-mentioned a plurality of blade left and right symmetricallies on separately the blade.At this moment, have at least such blade right, the distance from the right cut-out starting point of this blade to the fore-and-aft direction that shakes central shaft of blade is below 0.5 times of distance from the front end that constitutes the right blade of this blade to the fore-and-aft direction that shakes central shaft of blade.
Be meant the mirror image symmetry in this said left-right symmetry, and will be left and right directions perpendicular to the direction dictates of its plane of symmetry for convenience.In addition, fore-and-aft direction is meant the direction vertical with its left and right directions, is the parallel direction of the plane of symmetry with mirror image symmetry (left-right symmetry).
Research according to present inventors, distance from the right cut-out starting point of blade to the fore-and-aft direction that shakes central shaft of blade, with respect to short more to the distance of the fore-and-aft direction that shakes central shaft of blade, then can control the load that a blade is born more with respect to the amount of the vegetation of cutting off from the front end that constitutes the right blade of its blade relatively lessly.And, by distance that will be from the right cut-out starting point of blade to the fore-and-aft direction that shakes central shaft of blade, be taken as below 0.5 times of distance, thereby can improve the pruning performance of gardening trimmer wittingly from the front end that constitutes the right blade of its blade to the fore-and-aft direction that shakes central shaft of blade.
Preferably, above-mentioned gardening trimmer, for all blades for, cut off the distance of starting point from it to the fore-and-aft direction that shakes central shaft of blade, all are below 0.5 times of distance from the front end that constitutes the right blade of its blade to the fore-and-aft direction that shakes central shaft of blade.
Thus, can control with respect to the amount of each blade to the vegetation of cut-out, of the load of each blade bearing relatively lessly.
Preferably, above-mentioned gardening trimmer, the blade of center side that is positioned at left and right directions is right, cuts off the distance of starting point to the fore-and-aft direction that shakes central shaft of blade from it, then with respect to short more to the distance of the fore-and-aft direction that shakes central shaft of blade from the front end that constitutes the right blade of this blade.
The blade of center side that is positioned at left and right directions is right, and the pruning performance of gardening trimmer is had bigger influence.Therefore, because distance from the right cut-out starting point of the blade that is positioned at the left and right directions center side to the fore-and-aft direction that shakes central shaft of blade, with respect to shorter to the distance of the fore-and-aft direction that shakes central shaft of blade, thereby can improve the pruning performance of gardening trimmer effectively from the front end that constitutes the right blade of its blade.
Technology of the present invention is also specialized the blade assembly that is used for gardening trimmer.This blade assembly possesses the blade that a pair of quilt can joltily support mutually.Be formed with the blade that a plurality of pectinations are arranged on each blade.By be formed on the side blade a plurality of blades be formed on a plurality of blades on the opposite side blade, it is right to constitute a plurality of blades that intersect repeatedly along with the relatively back and forth angular movement of a blade and leave.And, it is characterized in that having at least such blade right, the distance of shaking central shaft from the cardinal extremity that constitutes the right blade of this blade to blade is below 0.5 times of the distance of shaking central shaft from the front end of its blade to blade.
By using this blade assembly, can improve the pruning performance of gardening trimmer wittingly.
According to the present invention, can determine the position and the size of the blade that on blade, forms quantitatively, thereby can be easy to design the blade that to realize higher pruning performance.
Description of drawings
Fig. 1 is the sectional view of lawn mower.
Fig. 2 is the upward view of lawn mower.
Fig. 3 is the figure of the blade assembly of expression embodiment 1.
Fig. 4 is the figure of the cutter of expression embodiment 1.
Fig. 5 is the figure of the bottom knife of expression embodiment 1.
Fig. 6 is the figure of the blade assembly of expression embodiment 2.
Fig. 7 is the figure of the cutter of expression embodiment 2.
Fig. 8 is the figure of the bottom knife of expression embodiment 2.
Symbol description: 10 ... lawn mower; 12 ... main body; 14 ... shell; 16 ... trigger switch; 18 ... motor; 20 ... gear train; 22,24 ... eccentric cam; 30,130 ... blade assembly; 40,140 ... cutter; 51～53,151～152 ... last cutting edge of a knife or a sword formation portion; 61～66,161～164 ... upper knife edge; 70,170 ... bottom knife; 81～84,181～183 ... following cutting edge of a knife or a sword formation portion; 61～66,191～194 ... following blade; 101～106,201～204 ... cut off starting point; R ... shake central shaft.
Embodiment
At first, the principal character with the embodiment of following explanation is listed below.
Mode 1: the blade that a pair of quilt can joltily support with respect to main body.
Mode 2: be built in the actuating unit of main body and make a blade have 180 degree phase difference ground mutually and carry out reciprocal angular movement.
Mode 3: be formed with the blade formation portion that pectination is arranged on the blade.The sidepiece of each blade formation portion is processed tartly, and is formed with the blade that pectination is arranged.
Mode 4: gardening trimmer possesses: the blade assembly that main body and quilt are fixing removably with respect to main body.
Embodiment 1:
Below, describe having implemented lawn mower of the present invention with reference to accompanying drawing.Lawn mower is a kind of of gardening trimmer, is mainly used in the pruning operation on lawn.
Fig. 1 is the sectional view of expression lawn mower 10.Fig. 2 is the upward view of expression lawn mower 10.Among Fig. 2, diagram has been omitted local structure, and the internal structure of expression lawn mower 10.
As shown in Figure 1 and Figure 2, lawn mower 10 possesses: main body 12 and be fixed in the blade assembly 30 of main body 12.Main body 12 mainly possesses: shell 14; Be located at the trigger switch 16 of shell 14; Be built in the motor 18 of shell 14; The gear train 20 that rotatablely moving of motor 18 slowed down and exported; First eccentric cam 22 and second eccentric cam 24 that are rotated by gear train 20.First eccentric cam 22 and second eccentric cam 24 are pivot with its rotating shaft 23, and the phase difference ground that has 180 degree mutually carries out the off-centre rotation.The diameter of first eccentric cam 22 is greater than the diameter of second eccentric cam 24.
With reference to Fig. 1, Fig. 2, Fig. 3, the structure of blade assembly 30 describes.Among Fig. 3, only represent blade assembly 30 in the monomer mode.At this, left and right directions and fore-and-aft direction have been stipulated for blade assembly 30 as shown in Figure 3.In addition, blade assembly 30 has the structure of mirror image symmetry, and direction dictates that therefore will be parallel with its symmetry axis is a fore-and-aft direction, and direction dictates that will be vertical with its symmetry axis is a left and right directions.
Blade assembly 30 possesses installing plate 32, cutter 40 and bottom knife 70.Installing plate 32, cutter 40 and bottom knife 70 reciprocally are connected by backing pin 34.Installing plate 32, cutter 40 and bottom knife 70 can shake as shaking central shaft independently of each other with the central shaft R of backing pin 34.Be inserted with liner component 36 between the rear end of the rear end of cutter 40 and bottom knife 70, and the relative angle of cutter 40 and bottom knife 70 is adjusted into setting.
Blade assembly 30 is fixed in main body 12 by a plurality of screws 28, and can carry out dismounting according to customer requirements.Blade assembly 30 is running stores of deterioration along with the carrying out of wearing and tearing.The user can be in blade assembly 30 deteriorations the new blade assembly 30 of stage exchange.
More by the part at rear, be formed with the embedded hole 42 of long hole shape than the backing pin 34 of cutter 40, and first eccentric cam 22 of the main body 12 that is rotatably assorted in this embedded hole 42.Thus, along with the eccentric rotary of first eccentric cam 22, cutter 40 can be that reciprocal angular movement is carried out at the center to shake central shaft R.Similarly, more by the part at rear, be formed with the embedded hole 72 of long hole shape than the backing pin 34 of bottom knife 70, and chimeric second eccentric cam 24 that main body 12 is arranged in this embedded hole 72.Thus, along with the eccentric rotary of second eccentric cam 24, bottom knife 70 can be that reciprocal angular movement is carried out at the center to shake central shaft R.At this, first eccentric cam 22 and second eccentric cam 24 carry out eccentric rotary with the phase difference ground of 180 degree mutually, and therefore, cutter 40 and bottom knife 70 back and forth rotate with the phase difference ground of 180 degree mutually.In addition, because the diameter of first eccentric cam, 22 to the second eccentric cams 24 is big, so cutter 40 moves back and forth with bigger amplitude than bottom knife 70.
With reference to Fig. 3, Fig. 4, the structure of cutter 40 is described.Among Fig. 4, only represent cutter 40 in the monomer mode.As shown in Figure 3, Figure 4, than the backing pin 34 of cutter 40 part in the place ahead more, be formed with the outstanding six roots of sensation upper knife edge formation portion 51,52,53 of pectination.Six roots of sensation upper knife edge formation portion 51,52,53 is formed by left and right symmetrically, to having the identical symbol of part mark of symmetric relation in the drawing.The sidepiece of each upper knife edge formation portion 51,52,53 is processed tartly, is formed with 12 upper knife edges 61,62,63,64,65,66 that pectination is arranged.12 upper knife edge 61,62,63,64,65,66 left and right symmetricallies form, to having the identical symbol of part mark of symmetric relation in the drawing.Below, two upper knife edges 61 that will be positioned at the center side of left and right directions are called first upper knife edge, two upper knife edges 62 that will be positioned at its left and right sides are called second upper knife edge, two upper knife edges 63 that will be positioned at its left and right sides are called the 3rd upper knife edge, two upper knife edges 64 that will be positioned at its left and right sides are called the 4th upper knife edge, two upper knife edges 65 that will be positioned at its left and right sides are called the 5th upper knife edge, and two upper knife edges 66 that will be positioned at its left and right sides are called the 6th upper knife edge.
As shown in Figure 4, each upper knife edge 61～66 all from cardinal extremity 61a～66a of being positioned at the rear to the front end 61b～66b that is positioned at the place ahead and linearly extension.In the table 1, represent about each upper knife edge 61～66: 40 the distance A of shaking central shaft R from cardinal extremity 61a～66a to cutter; From front end 61b～66b to cutter 40 shake central shaft R apart from B; Distance A is divided by the first index A/B of distance B; The distance C of 40 the fore-and-aft direction that shakes central shaft R from cardinal extremity 61a～66a to cutter; The distance D of 40 the fore-and-aft direction that shakes central shaft R from front end 61b～66b to cutter; And distance C is divided by the second index C/D of distance D.In addition, the numerical value unit of distance A, B, C, D is a millimeter.
Table 1
| Distance A | Apart from B | A/B | Distance C | Distance D | C/D | |
| First upper knife edge 61 | 33.6 | 82.4 | 0.41 | 33.2 | 81.5 | 0.41 |
| Second upper knife edge 62 | 37.6 | 83.0 | 0.45 | 32.4 | 81.3 | 0.40 |
| Distance A | Apart from B | A/B | Distance C | Distance D | C/D | |
| The 3rd upper knife edge 63 | 43.4 | 84.2 | 0.52 | 31.7 | 74.0 | 0.43 |
| The 4th upper knife edge 64 | 52.5 | 85.9 | 0.61 | 29.9 | 73.4 | 0.41 |
| The 5th upper knife edge 65 | 60.7 | 88.7 | 0.68 | 28.2 | 59.5 | 0.47 |
| The 6th upper knife edge 66 | 71.7 | 91.4 | 0.78 | 25.7 | 58.4 | 0.44 |
Usually, upper knife edge 61～66 is long more then can once prune more lawn more.Therefore, 40 the distance A of shaking central shaft R is less from cardinal extremity 61a～66a to cutter, and from front end 61b～66b to cutter 40 the upper knife edge bigger that shakes central shaft R apart from B, then can once prune a large amount of lawns more.Similarly, the distance C of 40 the fore-and-aft direction that shakes central shaft R is less from cardinal extremity 61a～66a to cutter, and the bigger upper knife edge of distance D of 40 the fore-and-aft direction that shakes central shaft R then can once be pruned a large amount of lawns more from front end 61b～66b to cutter.
In addition, 40 the distance A of shaking central shaft R is short more from cardinal extremity 61a～66a to cutter, and then upper knife edge 61～66 is near more from shaking central shaft R, thereby it is just more little to act on the load of motor 18 when cutting off the lawn.Similarly, the distance C of 40 the fore-and-aft direction that shakes central shaft R is short more from cardinal extremity 61a～66a to cutter, and then upper knife edge 61～66 is near more from shaking central shaft R, thereby it is just more little to act on the load of motor 18 when cutting off the lawn.If it is less to act on the load of motor 18, then motor 18 just can be with comparatively faster speed rotation.Its result, the vibration number of the reciprocal angular movement of last bottom knife 40,70 increases, and the breaks of time per unit increase.
From the above, distance A shown in the table 1 and distance C are less, and be then bigger apart from B and distance D, and the pruning performance of lawn mower 10 is just big more.Therefore, the first index A/B and the second index C/D of upper knife edge 61～66 are more little, and then the pruning performance of lawn mower 10 is just big more.
In addition, the pruning performance of lawn mower 10 integral body is along with the performance of first upper knife edge 61 of the center side that is positioned at left and right directions and second upper knife edge 62 and produce bigger variation.Therefore, the first index A/B and the second index C/D that are positioned at first upper knife edge 61 of center side of left and right directions and second upper knife edge 62 are more little, then can improve the pruning performance of lawn mower 10 integral body more significantly.
As shown in table 1, in the blade assembly 30 of present embodiment, then its first index A/B is more little to be positioned at the upper knife edge of center side of left and right directions.And the first index A/B of first upper knife edge 61 and second upper knife edge 62 is a very little value such below 0.5.Thus, the blade assembly 30 of present embodiment can be realized very high pruning performance.
In addition, as shown in table 1, in the blade assembly 30 of present embodiment, the second index C/D of all upper knife edges 61～66 is a very little value such below 0.5.Thus, the blade assembly 30 of present embodiment can be realized very high pruning performance.
Then, with reference to Fig. 3, Fig. 5, the structure of bottom knife 70 is described.Among Fig. 5, only represent bottom knife 70 in the monomer mode.As Fig. 3, shown in Figure 5,, be formed with the following blade formation of outstanding seven of pectination portion 81,82,83,84 than backing pin 34 part more on the front of bottom knife 70.Seven following blade formation portion 81,82,83,84 left and right symmetricallies form, to having the identical symbol of part mark of symmetric relation in the drawing.The sidepiece of each time blade formation portion 81,82,83,84 is processed tartly, is formed with 12 following blades 91,92,93,94,95,96 that pectination is arranged.12 following blade 91,92,93,94,95,96 left and right symmetricallies form, to having the identical symbol of part mark of symmetric relation in the drawing.Below, two following blades 91 that will be positioned at the center side of left and right directions are called blade first time, two following blades 92 that will be positioned at its left and right sides are called blade second time, two following blades 93 that will be positioned at its left and right sides are called blade the 3rd time, two following blades 94 that will be positioned at its left and right sides are called blade the 4th time, two following blades 95 that will be positioned at its left and right sides are called blade the 5th time, and two following blades 96 that will be positioned at its left and right sides are called blade the 6th time.
As shown in Figure 5, each time blade 91～96 all from cardinal extremity 91a～96a of being positioned at the rear to the front end 91b～96b that is positioned at the place ahead and linearly extension.In the table 2, each time blade 91～96 is represented: 70 the distance A of shaking central shaft R from cardinal extremity 91a～96a to bottom knife; From front end 91b～96b to bottom knife 70 shake central shaft R apart from B; Distance A is divided by the first index A/B of distance B; The distance C of 70 the fore-and-aft direction that shakes central shaft R from cardinal extremity 91a～96a to bottom knife; The distance D of 70 the fore-and-aft direction that shakes central shaft R from front end 91b～96b to bottom knife; And distance C is divided by the second index C/D of distance D.In addition, the numerical value unit of distance A, B, C, D is a millimeter.
Table 2
| Distance A | Apart from B | A/B | Distance C | Distance D | C/D | |
| |
34.4 | 82.4 | 0.42 | 33.8 | 82.4 | 0.41 |
| |
37.8 | 83.2 | 0.45 | 33.3 | 78.6 | 0.42 |
| The |
44.5 | 84.0 | 0.53 | 32.2 | 78.4 | 0.41 |
| The |
52.2 | 86.5 | 0.60 | 30.8 | 67.5 | 0.46 |
| The |
62.4 | 88.2 | 0.71 | 29.7 | 66.9 | 0.44 |
| The |
72.1 | 91.0 | 0.79 | 27.9 | 49.9 | 0.56 |
For following blade 91～96 also with previous described upper knife edge 61～66 similarly, its first index A/B and the second index C/D are more little, then the pruning performance of lawn mower 10 is just big more.
As shown in table 2, in the blade assembly 30 of present embodiment, then its first index A/B is more little to be positioned at the following blade of center side of left and right directions.And the first index A/B of first time blade 91 and second time blade 92 is a very little value such below 0.5.Thus, the blade assembly 30 of present embodiment can be realized very high pruning performance.
In addition, as shown in table 2, in the blade assembly 30 of present embodiment, the second index C/D of first time blade 91～5th time blade 95 is a very little value such below 0.5.Thus, the blade assembly 30 of present embodiment can be realized very high pruning performance.
As shown in Figure 3, be formed at 12 upper knife edges 61～66 and 12 following blades 91～96 that are formed at bottom knife 90 of cutter 40, it is right to constitute opposed facing 12 blades.Particularly, by first upper knife edge 61 and second time blade 91, constitute first blade to 61,91.By second upper knife edge 62 and second time blade 92, constitute second blade to 62,92.Below similarly constitute the 3rd blade to 63,93, the four blade swords to 64,94, the five blades to 65,95, the six blades to 66,96.
Each blade is right, along with the relative reciprocal angular movement of cutter 40 and bottom knife 70, and intersects repeatedly and leaves.As shown in Figure 3, both of cutter 40 and bottom knife 70 constitute right upper knife edge of each blade 61～66 and following blade 91～96 under the state of the initial point that is positioned at reciprocal angular movement, are in contact with one another near its cardinal extremity 61a～66a, 91a～96a and intersect.The crosspoint 101～106th of this moment, blade is to beginning to cut off the cut-out starting point on lawn.Cut off starting point 101～106th, the crosspoint that constitutes right upper knife edge of blade and following blade moves to the position of base end side.Here, should be noted in the discussion above that the cut-out starting point 101～106th that each blade is right, the cardinal extremity 61a～66a of the upper knife edge 61～66 right with constituting its blade and the cardinal extremity 91a～96a of following blade 91～96 are not necessarily consistent.In the present embodiment, the cardinal extremity 61a～66a of upper knife edge 61～66 and the cardinal extremity 91a～96a of following blade 91～96 are positioned at the more front end of the cut-out starting point 101～106 more right than blade separately.In addition, as shown in Table 1 and Table 2, constitute right upper knife edge of blade 61～66 and following blade 91～96 and from front end 61a～66a, 91b～96b to shake central shaft R apart from B about equally.
In table 3, to each blade to expression: from its cut off starting point 101～106 to shake central shaft R apart from E; Its apart from E divided by the 3rd desired value E/B that constitutes the right blade up and down 61～66,91～96 of its blade apart from the mean value of B
AVECut off the F of starting point 101～106 from it to the distance of the fore-and-aft direction that shakes central shaft R; It is apart from the mean value D of F divided by the distance D that constitutes the right blade up and down 61～66,91～96 of its blade
AVEFour-index value F/D
AVE
Table 3
| Apart from E | E/B AVE | Apart from F | F/D AVE | |
| First blade is to 61,91 | 36.4 | 0.44 | 35.9 | 0.44 |
| Second blade is to 62,92 | 39.9 | 0.48 | 35.4 | 0.44 |
| The 3rd blade is to 63,93 | 46.0 | 0.55 | 34.3 | 0.45 |
| The four blade sword is to 64,94 | 53.9 | 0.63 | 32.8 | 0.47 |
| The 5th blade is to 65,95 | 62.9 | 0.71 | 30.7 | 0.49 |
| The 6th blade is to 66,96 | 72.5 | 0.79 | 28.1 | 0.52 |
The blade centering that constitutes by upper knife edge 61～66 and following blade 91～96, cut off the approaching more central shaft R that shakes of starting point 101～106, the load that acts on motor 18 when then cutting off the lawn is just more little.Thus, if the electric power of supplying with to motor 18 is identical, then cut off the approaching more central shaft R that shakes of starting point 101～106, the vibration number of reciprocal angular movement of then going up bottom knife 40,70 is just big more, and the pruning performance is also high more.And, as discussed previously, constitute the big more of blade right upper knife edge 61～66 and following blade 91～96 apart from B and distance D, the amount of then once cutting off the lawn is just many more, thereby the pruning performance is just big more.Therefore, the 3rd right desired value E/B of blade
AVEWith four-index value F/D
AVEMore little, then prune performance and can increase significantly more.
In addition, for the pruning ability of the integral body of lawn mower 10, the blade of center side that is positioned at left and right directions is right, and then the image to the pruning ability of the integral body of lawn mower 10 is big more.Hence one can see that, is positioned at the 3rd right desired value E/B of blade of the center side of left and right directions
AVEWith four-index value F/D
AVEMore little, then the pruning ability of the integral body of lawn mower 10 is big more.
As shown in table 3, in the blade assembly 30 of present embodiment, the blade of center side that is positioned at left and right directions is to its 3rd desired value E/B then
AVEMore little.And, first blade to 61,91 and second blade to 62,92 the 3rd desired value E/B
AVEIt is very little value such below 0.5.Thus, the blade assembly 30 of present embodiment can be realized very high pruning performance.
In addition, as shown in table 3, in the blade assembly 30 of present embodiment, the blade of center side that is positioned at left and right directions is to its four-index value F/D then
AVEMore little.And, from first blade to the 61,91 to the 5th blade to 65,95 four-index value F/D
AVEIt all is very little value such below 0.5.Thus, the blade assembly 30 of present embodiment can be realized very high pruning performance.
Embodiment 2:
Below, describe having implemented blade assembly of the present invention with reference to accompanying drawing.The blade assembly of present embodiment is the blade that can be used at the lawn mower 10 of embodiment 1 explanation.
Fig. 6 represents the blade assembly 130 of present embodiment.Blade assembly 130 possesses: installing plate 132, cutter 140 and bottom knife 170.Installing plate 132, cutter 140 and bottom knife 170 reciprocally are connected by backing pin 134.Installing plate 132, cutter 140 and bottom knife 170 can shake as shaking central shaft independently of each other with the central shaft R of backing pin 134.Between the rear end of the rear end of cutter 140 and bottom knife 170, be inserted with the liner component 136 that is used for the relative angle of cutter 140 and bottom knife 170 is maintained setting.
As shown in Figure 6, the part more lean on the rear than the backing pin 134 of cutter 140 is formed with the embedded hole 142 of long hole shape, and first eccentric cam 22 of the main body 12 that is rotatably assorted on this embedded hole 142.Similarly, by the part of side after examination, be formed with the embedded hole 172 of long hole shape than the backing pin 134 of bottom knife 170, and chimeric second eccentric cam 24 that main body 12 is arranged on this embedded hole 172.With the blade assembly 30 that in embodiment 1, has illustrated similarly, cutter 140 and bottom knife 170 back and forth rotate with the phase differences of 180 degree mutually.
With reference to Fig. 6, Fig. 7, the structure of cutter 140 is described.Among Fig. 7, only represent cutter 140 in the monomer mode.As Fig. 6, shown in Figure 7,, be formed with four outstanding upper knife edge formation portions 151,152 of pectination than backing pin 134 part more on the front of cutter 140.Four upper knife edge formation portions 151,152 are formed by left and right symmetrically, to having the identical symbol of part mark of symmetric relation in the drawing.The sidepiece of each upper knife edge formation portion 151,152 is processed tartly, and is formed with eight upper knife edges 161,162,163,164 that pectination is arranged.Eight upper knife edges 161～164 are formed by left and right symmetrically, to having the identical symbol of part mark of symmetric relation in the drawing.Below, two upper knife edges 161 that will be positioned at the center side of left and right directions are called first upper knife edge, two upper knife edges 162 that will be positioned at its left and right sides are called second upper knife edge, two upper knife edges 163 that will be positioned at its left and right sides are called the 3rd upper knife edge, and two upper knife edges 164 that will be positioned at its left and right sides are called the 4th upper knife edge.
As shown in Figure 7, each upper knife edge 161～164 all from cardinal extremity 161a～164a of being positioned at the rear to the front end 161b～164b that is positioned at the place ahead and linearly extension.In the table 4, each upper knife edge 161～164 is represented: 140 the distance A of shaking central shaft R from cardinal extremity 161a～164a to cutter; From front end 161b～164b to cutter 140 shake central shaft R apart from B; Distance A is divided by the first index A/B of distance B; The distance C of 140 the fore-and-aft direction that shakes central shaft R from cardinal extremity 161a～164a to cutter; The distance D of 140 the fore-and-aft direction that shakes central shaft R from front end 161b～164b to cutter; And distance C is divided by the second index C/D of distance D.In addition, the numerical value unit of distance A, B, C, D is a millimeter.
Table 4
| Distance A | Apart from B | A/B | Distance C | Distance D | C/D | |
| First upper knife edge 61 | 34.4 | 71.3 | 0.48 | 34.0 | 70.6 | 0.48 |
| Second upper knife edge 62 | 36.9 | 71.8 | 0.51 | 33.6 | 70.3 | 0.48 |
| The 3rd upper knife edge 63 | 41.1 | 73.1 | 0.56 | 33.0 | 64.6 | 0.51 |
| The 4th upper knife edge 64 | 47.1 | 74.4 | 0.63 | 31.9 | 63.8 | 0.50 |
As shown in table 4, in the blade assembly 130 of present embodiment, then its first index A/B is more little to be positioned at the upper knife edge of center side of left and right directions.And the first index A/B of first upper knife edge 161 and second upper knife edge 162 is a very little value such below 0.5.Thus, the blade assembly 130 of present embodiment can be realized very high pruning performance.
In addition, as shown in table 4, in the blade assembly 130 of present embodiment, the second index C/D of all upper knife edges 161～164 is a very little value such below 0.5.Thus, the blade assembly 130 of present embodiment can be realized very high pruning performance.
Then, with reference to Fig. 6, Fig. 8, the structure of bottom knife 170 is described.Among Fig. 8, only represent bottom knife 170 in the mode of monomer.As Fig. 6, shown in Figure 8,, be formed with the following blade formation of outstanding five of pectination portion 181,182,183 than backing pin 134 part more on the front of bottom knife 170.Five up and down blade formation portion 181～183 formed by left and right symmetrically, to having the identical symbol of part mark of symmetric relation in the drawing.The sidepiece of each time blade formation portion 181～183 is processed tartly, and is formed with eight following blades 191,192,193,194 that pectination is arranged.Eight following blades 191～194 are formed by left and right symmetrically, to having the identical symbol of part mark of symmetric relation in the drawing.Below, two following blades 191 that will be positioned at the center side of left and right directions are called blade first time, two following blades 192 that will be positioned at its left and right sides are called blade second time, two following blades 193 that will be positioned at its left and right sides are called blade the 3rd time, and two following blades 194 that will be positioned at its left and right sides are called blade the 4th time.
As shown in Figure 8, each time blade 191～194 is all from being positioned at the cardinal extremity 191a～194a at rear, to the front end 191b～194b that is positioned at the place ahead and linearly extension.In table 8, each time blade 191～194 is represented: 170 the distance A of shaking central shaft R from cardinal extremity 191a～194a to bottom knife; From front end 191b～194b to bottom knife 170 shake central shaft R apart from B; Distance A is divided by the first index A/B of distance B; The distance C of 170 the fore-and-aft direction that shakes central shaft R from cardinal extremity 191a～194a to bottom knife; The distance D of 170 the fore-and-aft direction that shakes central shaft R from front end 191b～194b to bottom knife; And distance C is divided by the second index C/D of distance D.In addition, the numerical value unit of distance A, B, C, D is a millimeter.
Table 5
| Distance A | Apart from B | A/B | Distance C | Distance D | C/D | |
| |
34.7 | 71.7 | 0.48 | 34.3 | 71.7 | 0.48 |
| |
37.1 | 72.8 | 0.51 | 34.0 | 68.3 | 0.50 |
| The |
41.6 | 73.1 | 0.57 | 33.3 | 69.0 | 0.48 |
| Distance A | Apart from B | A/B | Distance C | Distance D | C/D | |
| The |
47.1 | 75.8 | 0.62 | 32.4 | 71.7 | 0.45 |
As shown in table 5, in the blade assembly 130 of present embodiment, then its first index A/B is more little to be positioned at the following blade of center side of left and right directions.And the first index A/B of first time blade 191 is a very little value such below 0.5.Thus, the blade assembly 130 of present embodiment can be realized very high pruning performance.
In addition, as shown in table 5, in the blade assembly 130 of present embodiment, the second index C/D of first time blade 191 and second time blade 192 and the 3rd time blade 193 is a very little value such below 0.5.Thus, the blade assembly 130 of present embodiment can be realized very high pruning performance.
As shown in Figure 6, be formed on eight upper knife edges 161～164 on the cutter 140 and be formed on eight following blades 191～194 on the bottom knife 170, it is right to constitute opposed facing eight blades.Particularly, by first upper knife edge 161 and second time blade 191, constitute first blade to 161,191.Below similarly, constitute second blade to 162,192, the three blades to 163,193, the four blade swords to 164,194.Both of cutter 140 and bottom knife 170 constitute right upper knife edge of each blade 161～164 and following blade 191～194 under the state of the initial point that is positioned at reciprocal angular movement, be in contact with one another near its cardinal extremity 161a～164a, 191a～194a and intersect.The crosspoint 201～204 of this moment is that blade is to beginning to cut off the cut-out starting point on lawn.
In the table 6, to each blade to expression: cut off the E of starting point 201～204 from it to the distance of shaking central shaft R; Its apart from E divided by the 3rd desired value E/B that constitutes the right blade up and down 161～164,191～194 of its blade apart from the mean value of B
AVECut off the F of starting point 201～204 from it to the distance of the fore-and-aft direction that shakes central shaft R; With and apart from the mean value D of F divided by the distance D that constitutes the right blade up and down 161～164,191～194 of its blade
AVEFour-index value F/D
AVE
Table 6
| Apart from E | E/B AVE | Apart from F | F/D AVE | |
| First blade is to 61,91 | 35.4 | 0.50 | 35.0 | 0.49 |
| Second blade is to 62,92 | 37.7 | 0.52 | 34.3 | 0.49 |
| The 3rd blade is to 63,93 | 41.8 | 0.57 | 33.4 | 0.50 |
| The four blade sword is to 64,94 | 47.7 | 0.64 | 32.8 | 0.48 |
As shown in table 6, in the blade assembly 130 of present embodiment, the blade of center side that is positioned at left and right directions is to its 3rd desired value E/B then
AVEMore little.And first blade is to 161,191 the 3rd desired value E/B
AVEIt is very little value such below 0.5.Thus, the blade assembly 130 of present embodiment can be realized very high pruning performance.
In addition, as shown in table 6, in the blade assembly 130 of present embodiment, the blade of center side that is positioned at left and right directions is to its four-index value F/D then
AVEMore little.And first blade to 161,191 and second blade to 162,192 four-index value F/D
AVEIt all is very little value such below 0.5.Thus, the blade assembly 130 of present embodiment can be realized very high pruning performance.
More than, embodiments of the present invention are explained, yet these are nothing but illustration, the protection domain to claim does not limit.The described technology of the protection domain of claim also comprises the technology that above illustrative concrete example is carried out various distortion, change.
The technology essential factor of this specification or description of drawings is a practicality of bringing into play technology by independent or various combinations, the described combination of claim when therefore being not limited to apply for.The illustrative technology of this specification or accompanying drawing is to reach a plurality of purposes simultaneously, reaches the practicality on also the possessing skills of one of them purpose itself.
Claims (11)
1. gardening trimmer possesses:
Main body;
Be located at the blade that main body and at least one side blade can joltily be supported; And
Be built in main body and make a blade carry out the relatively back and forth actuating unit of angular movement,
Be formed with the blade that a plurality of pectinations are arranged on each blade,
By a plurality of blades and a plurality of blades that are formed on the opposite side blade that are formed on the side blade, it is right to constitute a plurality of blades that intersect repeatedly along with the relatively back and forth angular movement of a blade and leave, it is characterized in that,
Have at least such one to constitute the right blade of blade, that is, the distance of shaking central shaft from the cardinal extremity of this blade to blade is below 0.5 times of the distance of shaking central shaft from the front end of this blade to blade.
2. gardening trimmer according to claim 1 is characterized in that,
Have at least such blade right, that is, the distance of shaking central shaft from the right cut-out starting point of this blade to blade is below 0.5 times of the distance of shaking central shaft from the front end that constitutes the right blade of this blade to blade.
3. gardening trimmer according to claim 1 is characterized in that,
Above-mentioned a plurality of blade left and right symmetrically is formed at blade separately,
Have at least such blade right, that is, the distance from the right cut-out starting point of this blade to the fore-and-aft direction that shakes central shaft of blade is below 0.5 times of distance from the front end that constitutes the right blade of this blade to the fore-and-aft direction that shakes central shaft of blade.
4. gardening trimmer according to claim 3 is characterized in that,
For all blades for, cut off the distance of starting point from it to the fore-and-aft direction that shakes central shaft of blade, all are below 0.5 times of distance from the front end that constitutes the right blade of this blade to the fore-and-aft direction that shakes central shaft of blade.
5. according to any described gardening trimmer in the claim 1 to 4, it is characterized in that,
The blade that is positioned at the left and right directions center side is right, cuts off the distance of starting point to the fore-and-aft direction that shakes central shaft of blade from it, then with respect to short more to the distance of the fore-and-aft direction that shakes central shaft of blade from the front end that constitutes the right blade of this blade.
6. gardening trimmer according to claim 1 is characterized in that,
Have at least such blade right, that is, the distance of shaking central shaft from the right cut-out starting point of this blade to blade is below 0.5 times of the distance of shaking central shaft from the front end that constitutes the right blade of this blade to blade.
7. gardening trimmer according to claim 1 is characterized in that,
Have at least such blade right, that is, the distance from the right cut-out starting point of this blade to the fore-and-aft direction that shakes central shaft of blade is below 0.5 times of distance from the front end that constitutes the right blade of this blade to the fore-and-aft direction that shakes central shaft of blade.
8. gardening trimmer according to claim 1 is characterized in that,
The blade that is positioned at the left and right directions center side is right, cuts off the distance of starting point to the fore-and-aft direction that shakes central shaft of blade from it, then with respect to short more to the distance of the fore-and-aft direction that shakes central shaft of blade from the front end that constitutes the right blade of this blade.
9. blade assembly, it is used for gardening trimmer, possesses the blade that a pair of quilt can joltily support mutually,
Be formed with the blade that a plurality of pectinations are arranged on each blade,
By a plurality of blades and a plurality of blades that are formed on the opposite side blade that are formed on the side blade, it is right to constitute a plurality of blades that intersect repeatedly along with the relatively back and forth angular movement of a blade and leave, it is characterized in that,
Have at least such one to constitute the right blade of blade, that is, the distance of shaking central shaft from the cardinal extremity of this blade to blade is below 0.5 times of the distance of shaking central shaft from the front end of this blade to blade.
10. blade assembly according to claim 9 is characterized in that,
Have at least such blade right, that is, the distance of shaking central shaft from the right cut-out starting point of this blade to blade is below 0.5 times of the distance of shaking central shaft from the front end that constitutes the right blade of this blade to blade.
11. blade assembly according to claim 9 is characterized in that,
The blade that is positioned at the left and right directions center side is right, cuts off the distance of starting point to the fore-and-aft direction that shakes central shaft of blade from it, then with respect to short more to the distance of the fore-and-aft direction that shakes central shaft of blade from the front end that constitutes the right blade of this blade.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-081361 | 2007-03-27 | ||
| JP2007081361A JP5084319B2 (en) | 2007-03-27 | 2007-03-27 | Horticultural hair clipper and blade assembly used for it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101273695A CN101273695A (en) | 2008-10-01 |
| CN101273695B true CN101273695B (en) | 2010-09-08 |
Family
ID=39909175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100845591A Active CN101273695B (en) | 2007-03-27 | 2008-03-25 | Gardening trimmer and blade assembly therefor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5084319B2 (en) |
| CN (1) | CN101273695B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010161943A (en) * | 2009-01-13 | 2010-07-29 | Genpei Hamono Kojo:Kk | Clipper cutter, and clipper-system mowing blade device including the same |
| CN104247633B (en) * | 2013-06-28 | 2016-12-07 | 苏州宝时得电动工具有限公司 | pruning shear blade group |
| CN110431995B (en) * | 2018-05-02 | 2022-07-01 | 上海工程技术大学 | Backpack fruit picking and branch pruning device and using method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61100940U (en) * | 1984-12-10 | 1986-06-27 | ||
| JP2004147562A (en) * | 2002-10-30 | 2004-05-27 | Ryobi Ltd | Hand-held lawn mower |
| JP4974480B2 (en) * | 2005-05-27 | 2012-07-11 | 株式会社マキタ | Trimming machine |
| JP2007049973A (en) * | 2005-08-12 | 2007-03-01 | Toshio Ohashi | Enhanced type secateurs |
-
2007
- 2007-03-27 JP JP2007081361A patent/JP5084319B2/en active Active
-
2008
- 2008-03-25 CN CN2008100845591A patent/CN101273695B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP5084319B2 (en) | 2012-11-28 |
| JP2008237087A (en) | 2008-10-09 |
| CN101273695A (en) | 2008-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101273695B (en) | Gardening trimmer and blade assembly therefor | |
| US11464171B2 (en) | Gardening trimmer | |
| CN103518553A (en) | Gardening tool | |
| CA2587107A1 (en) | Knife guard construction for sickle knife | |
| JP2005261275A (en) | Hedge trimmer | |
| CN104823596B (en) | Self-sharpening disc cutter arc-shaped insection blade and manufacturing method thereof | |
| CN110199705A (en) | Hedgerow conical surface modeling scissors mechanism | |
| JP4973220B2 (en) | Trimming machine | |
| CN105538351B (en) | A kind of Multifunctional clipping device | |
| JP4657094B2 (en) | Trimming machine | |
| CN114173547B (en) | Gardening trimmer | |
| JP4469224B2 (en) | Hedge trimmer | |
| DE20308457U1 (en) | Battery-driven lawnmower has two or more disks, to each of which two cutter blades are attached, disks being mounted on bases of plastic cylinders surrounding drive shafts | |
| CN205343189U (en) | Clipping machine with novel tool bit structure | |
| CN205272097U (en) | Clipping machine with novel structure of shifting | |
| CN209572448U (en) | Double knife cutterbar | |
| KR20110042905A (en) | The brush cutter knife and knife operating method and knife operating divice | |
| ATE261239T1 (en) | CUTTING HEAD FOR BUSH MOWERS AND EDGE TRIMMERS | |
| JPH0837870A (en) | Reel type lawn mower or weeder | |
| CN220123853U (en) | Squid cutting machine | |
| CN217523436U (en) | Grass combing knife assembly and grass combing machine | |
| SE0200835L (en) | Cylinder lawnmower and therefore designated cylinder unit | |
| JP2001057815A (en) | Clipping machine | |
| JP2007097479A (en) | Reaping blade for bush cutter | |
| JPH02195812A (en) | Device for driving reaping blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |