CN110463437A - Portable power grass trimmer - Google Patents

Abstract

The present invention provides that a kind of to be configured to labour few and efficiently carry out the portable power grass trimmer of cutting operation obliquely.Including strip extend and can change in the range of 1.5~3.5m the bearing part (300) of length, with the rotating knife (A) of the power source (400) of the front end for being installed on bearing part 300 and the front end by being supported on bearing part (300) driving, rotating knife (A) includes to be installed on the installation axle (14) rotated by the power of power source (400), and the cutting part (100a) that is rotated together with the installation axle (14) and the lower section positioned at cutting part (100a) and the rotatable component that contacts to earth (500) centered on installation axle (14), it is provided on bearing part (300) for being held for operator and assigns the handle (310 to the tractive force in its radicle direction to bearing part (300), 320).

Description

Portable power grass trimmer

Technical field

The present invention relates to portable power grass trimmers, more specifically, are related to being suitable for the portable of cutting operation obliquely Formula power mower.

Background technique

Portable power grass trimmer is typically configured to install rotating knife in the front end of operation pipe, by the butt side with operation pipe The rotary power of the engine of connection passes to rotating knife (for example, referring to patent document 1 via the transmission shaft for being inserted through operation pipe Fig. 1).Operator makes operation pipe swing while holding the operating handle being configured on operation pipe, makes rotating knife edge Landing ground moves left and right to carry out cutting operation.

But as described above, make operation pipe swing to carry out the existing general grass trimmer of the form of operation, although The cutting operation on level land can be carried out, but cannot say that being appropriate for inclined surface reaches the mowing work obliquely such as dykes and dams of 3m Industry.That is, repeatedly carrying out tilting the operation lifted or put down because mowing for operation pipe in such a way that rotating knife is moved along inclined-plane The influence of the weight of machine and need big labour, it is difficult to long lasting for carrying out cutting operation obliquely.

Existing technical literature

Patent document 1:WO2013/054880 bulletin

Summary of the invention

Subject to be solved by the invention

In view of the foregoing, project is to provide a kind of to be configured to efficiently tilt with few labour the present invention The portable power grass trimmer of the cutting operation on ground.

The method used for solving the problem

To solve the above-mentioned problems, the present invention adopts the following technical scheme that.

A kind of portable power grass trimmer is provided through the invention characterized by comprising bearing part, strip Ground extends, and can change length in the range of 1.5~3.5m；And rotating knife, before being installed on above-mentioned bearing part End, the power source drive of the front end by being supported on above-mentioned bearing part, above-mentioned rotating knife includes: cutting part, installation In the installation axle that the power by above-mentioned power source is rotated, rotated together with the installation axle；With the component that contacts to earth, it is located at upper The lower section of cutting part is stated, can be rotated centered on above-mentioned installation axle, is provided on above-mentioned bearing part for for operation Person holds to assign above-mentioned bearing part the handle of the tractive force to its radicle direction.

In a preferred embodiment, above-mentioned handle includes: the 1st handle, is installed on the radicle of above-mentioned bearing part, For by the hand gripping of operator；With the 2nd handle, it is installed on above-mentioned 1st handle of ratio of above-mentioned bearing part on the front Position, for by operator another hand gripping.

In a preferred embodiment, above-mentioned 1st handle forms horizontally long ring-type in the end on observation of above-mentioned bearing part.

In a preferred embodiment, above-mentioned 2nd handle symmetrically has in the end on observation of above-mentioned bearing part There are lateral extensions and the then downward U-shaped portion of the lateral extensions.

In a preferred embodiment, above-mentioned cutting part includes: holding member, is linked with above-mentioned installation axle；And line Shape cutting part, butt side are held in the holding member, and front end side extends to the radial direction foreign side of above-mentioned holding member.

In a preferred embodiment, the above-mentioned component that contacts to earth has the outer diameter bigger than the maximum outside diameter of above-mentioned holding member, It is above-mentioned threadiness cutting part by its front end extend to than the above-mentioned component that contacts to earth periphery more outward side in a manner of used.

In a preferred embodiment, the butt side of above-mentioned linear cutting part is arranged at the holding of above-mentioned holding member Mechanism is kept, and above-mentioned holding mechanism includes: linking part, links one end of above-mentioned linear cutting part；With multiple wrapping portion, In the circumferential array of above-mentioned holding member, it is wrapping with above-mentioned linear cutting part.

It in a preferred embodiment, further include that become easy the installation of above-mentioned linear cutting part easy to install uses machine Structure, it is above-mentioned it is easy to install formed with mechanism by groove portion, the groove portion include by above-mentioned multiple wrapping portion near above-mentioned linking part Wrapping portion behind position to the wrapping portion farthest from above-mentioned linking part the connected straight line in behind position including, to above-mentioned guarantor The radial direction foreign side for holding component is open.

Other features and advantages of the present invention will become more according to the explanation referring to attached drawing in embodiments described below It is illustrated.

Detailed description of the invention

Fig. 1 is the overall perspective view of the portable power grass trimmer of an embodiment of the invention.

Fig. 2 is the partial side view in cross section of the butt side of portable power grass trimmer shown in FIG. 1.

Fig. 3 is the partial side view in cross section of the front end side of portable power grass trimmer shown in FIG. 1.

Fig. 4 is the IV-IV line sectional view of Fig. 3.

Fig. 5 is the V-V line sectional view of Fig. 3.

Fig. 6 is the line VI -- VI sectional view of Fig. 4.

Fig. 7 is the VII-VII line sectional view of Fig. 4.

Fig. 8 is the VIII-VIII line sectional view of Fig. 7.

Fig. 9 is the application method explanatory diagram of portable power grass trimmer shown in FIG. 1.

Figure 10 is the Action Specification figure of portable power grass trimmer shown in FIG. 1.

Description of symbols

A grass trimmer rotating knife

B portable power grass trimmer

L straight line

The inclined-plane SL

14 installation axles

14a external screw thread

14b external screw thread

15 thread spindles

17 rotating knife pressing pieces

40 linear cutting parts

41 large-diameter portions

100 holding members

100a cutting part

101 centre bores

102 boss portions

110 upper support plate portions

111 notch sections

112 concave portions

113 protruding portions

120 connection wall portions

121 protrusions

122 groove portions

The bottom 122a (groove portion)

123 protrusions

130 bottom support casting portions

200 holding mechanisms

210 linking parts

211 wall portions

212 slits

220a, 220b, 220c, 220d wrapping portion

221 roll components

222 support shafts

230 easy to install use mechanism

240 the 1st anti-detachment mechanisms

250 the 2nd anti-detachment mechanisms

300 bearing parts

301 part 1s (bearing part)

302 part 2s (bearing part)

310 the 1st handles

311 cushion components

312 lateral extensions

313 clamp members

314 bars

320 the 2nd handles

321 lateral extensions

322 downward U-shaped portions

323 cushion components

330 support plates

331 holes

The 340 anti-plates that disperse

350 clamp members

351 slits

352 bars

370 brackets

381 throttle levers

382 stop buttons

400 power sources

400a put-put

410 engine main bodies

411 clutch drums

420 deceleration output sections

421 shells

430 deceleration mechanisms

431 the 1st axis

The 1st gear of 431a

432 the 2nd axis

The 2nd gear of 432a

440 coverings

500 contact to earth component

511 center canister portions

520 round pan portions

521 dome-shaped portions

522 peripheral parts

530 bearings

531 outer rings (bearing)

532 inner rings (bearing)

Specific embodiment

Hereinafter, illustrating the preferred embodiments of the present invention referring to attached drawing.

FIG. 1 to FIG. 8 indicates that the portable power grass trimmer B of an embodiment of the invention (hereinafter sometimes referred to simply as " is cut Careless machine B ").Grass trimmer B includes: the bearing part 300 that extends of strip ground；It is installed on the rotation of the front end of bearing part 300 Rotor A；With the front end that is loaded into bearing part 300, power source 400 for rotating driving rotating knife A.Rotating knife A packet Include cutting part 100a and the component 500 that contacts to earth under cutting part 100a.

Bearing part 300 extends with having the strip that can be formed by light metals such as such as aluminium in the present embodiment Pipe mode, there is the butt side part 1 301 and front end side part 2 302 that telescopically combine.In the bearing part The 1st handle 310 and the 2nd handle 320 for holding for operator is installed on 300.In addition, in the front end of bearing part 300 It is linked with the support plate 330 for supporting power source 400 and rotating knife A.Moreover, in the appropriate of the front end side of bearing part 300 Portion is equipped with the anti-plate 340 that disperses for preventing the blade cut off by rotating knife A from dispersing towards operator.

In the present embodiment, bearing part 300 is configured to, by as follows by part 1 301 and 302 groups of part 2 It closes, them can be made flexible, its overall length can be suitably changed.

As clearly shown in Fig. 2, the front end side part 2 302 of bearing part 300 has outer with butt side part 1 301 The corresponding internal diameter of diameter, and the specific length set of butt side inserts in part 1 301 to be combined.In the butt of part 2 302 Periphery is fixed with the clamp member 350 with slit 351, which makes slit and enabling bar 352 to rotate 351 expand diminution.If reducing slit 351, clamp member 350 fastens above-mentioned part 2 302 to part 1 301, Part 1 301 and part 2 302 is set to become stationary state, if expanding slit 351, clamp member 350 weakens above-mentioned Part 2 302 is able to carry out the stretching relative to the 1st component 301 of part 2 302 to the fastening force of part 1 301, can Bearing part 300 is set as desired length.For the length after the setting of bearing part 300, above-mentioned slit is reduced 301, the direction for making bar 352 fasten part 2 302 to clamp member 350 rotates, and becomes part 1 301 and part 2 302 Stationary state.

The length of bearing part 300 can more preferably be stretched in the range of 1.7~3.0m preferably in the range of 1.5~3.5m Contracting.

1st handle 310 is installed on the radicle of the radicle of bearing part 300, i.e. part 1 301.1st handle 310 exists The upper side of part 1 301 forms horizontally long ring-type along the end on observation of bearing part 300, by by the tubing of light metal It is bent into horizontally long cyclic annular and is formed, and wind and formed by the cushion components 311 of the production such as rubber.Under 1st handle, 310 use Portion's lateral extensions 312 are fixed on the clamp member 313 of above-mentioned part 1 301 and are installed in bearing part 300, by making Bar 314 rotates and unclamps the chucking power of clamp member 313, to as shown by the arrows in Figure 2, set the 1st as would be expected Angle of the handle 310 relative to bearing part 300.After the setting for having carried out the angle of the 1st handle 310, bar 314 is rotated Operation, restores the chucking power of clamp member 313, the 1st handle 310 is fixed on desired angle.

2nd handle 320 is in the part 1 for being installed on bearing part 300 via bracket 370 on the front than the 1st handle 310 301.2nd handle 320 has lateral extensions 321 and the then cross along the end on observation of bearing part 300 symmetrically It to the downward U-shaped portion 322 of extension, is formed and bending the tubing of light metal, and downward U-shaped portion volume 322 It is formed around the cushion components 323 by production such as rubber.

As described later, the 1st handle 310 and the 2nd handle 320 are suitable for the appropriate portion that such as right hand holds the 1st handle 310 The interval that the operator of the appropriate portion LH in the downward U-shaped portion 322 of RH, the 2nd handle 320 of left-handed draws bearing part 300 is set It sets.

In Fig. 1 and Fig. 2, symbol 381 is the output for adjusting the put-put 400a as power source 400 Throttle lever, symbol 382 are the stop buttons for making put-put 400a emergent stopping.

Rotating knife A also forms one with put-put 400a as the power source 400 for being driven to it Body, and it is installed on via support plate 330 front end of bearing part 300.

As shown in Fig. 2, put-put 400a includes engine main body 410 and deceleration output section 420.Slow down and exports Clutch drum 411 and deceleration mechanism 430 are stored in shell 421 and is constituted in portion 420.Clutch drum 411 with rotatably propped up Hold in the 1st axis 431 of shell 421 radicle side connection, be set to engine main body 410 output shaft (illustration omitted) from Clutch component (illustration omitted) cooperates, and constitutes centrifugal clutch.It has also been rotatably supported on shell 421 and the 1st axis 431 the 2nd parallel axis 432, the 1st axis 431 and the 2nd axis 432 pass through the gear (the 1st gear 431a and the 2nd tooth that are installed in the two Wheel 432a) it is intermeshed and cooperates, constitute deceleration mechanism 430.The front end of 2nd axis 432 is prominent from shell 421, the part conduct Installation axle 14 for rotating knife A works.It is respectively formed in the butt side large-diameter portion and front end side small diameter portion of installation axle 14 External screw thread 14a, 14b, the external screw thread 14a in butt side are screwed with metal rotating knife pressing piece 17.Put-put 400a is fitted into the path that the butt periphery of shell 421 is formed in via stage portion 422 in the hole 331 for being formed in support plate 330 Portion 423, and support plate 330 is clipped between stage portion 422 and engine main body 410, and it is installed in support plate 330.

In the present embodiment, engine main body 410 is covered by the covering 440 of caged, is protected by the covering 440 small The suction unit and exhaust portion of type petrol engine 400a or other functional components.

Rotating knife A is constituted as follows in the present embodiment.

As clearly shown in Fig. 3~Fig. 6, rotating knife A is installed in above-mentioned installation axle 14 and rotatable, comprising: keeps linear Cutting part 40 and constitute the holding member 100 of cutting part 100a and relative to the holding member 100 with its rotary shaft (with peace Fill the same axle center of axis 14) centered on can relative rotation the component 500 that contacts to earth.In addition, in the following description, radial direction refers to The radial direction of rotating knife A or holding member 100.

Holding member 100 includes the holding mechanism 200 for keeping the radicle of linear cutting part 40.Holding member 100 is big It causes to be formed and overlooks circle, there is upper support plate portion 110, which has at center with centre bore 101 Boss portion 102 is simultaneously formed on the outer periphery multiple recessed forniciform notch sections 111, the outer region in the upper support plate portion 110 It is equipped with above-mentioned holding mechanism 200 under it.Holding member 100 is except aftermentioned wrapping portion 220a, 220b, 220c, 220d and its Installing component etc. should be integrally formed by can pass through resin except part that metal is formed and be constituted to keep intensity.

Under above-mentioned upper support plate portion 110, via the presence in a manner of surrounding above-mentioned boss portion 102 and in upper and lower The connection wall portion 120 with specified altitude has been wholely set bottom support casting portion 130 upwards.Bottom support casting portion 130 have with The roughly the same outer diameter in above-mentioned upper support plate portion 110, from above-mentioned connection wall portion 120 in horizontal flanges shape to radial direction foreign side Extend.Above-mentioned holding mechanism 200 is formed on the horizontal upper surface (abutment wall) in the bottom support casting portion 130.

In the present embodiment, bottom support casting portion 130 is divided into two in the circumferential, is provided at two positions same The holding mechanism 200 of structure.Holding mechanism 200 substantially has the linking part 210 of the one end 41 for linking linear cutting part 40 With arranged in the circumferential direction in bottom support casting portion 130 and be wrapping with linear cutting part 40 multiple wrapping portion 220a, 220b, 220c,220d.Its shape that deforms or knot is made by heat as linear cutting part 40, such as using by one end of nylon wire Cylindric major diameter is formed at the component of the specific length of large-diameter portion or in the one end for the nylon wire rod for cutting into specific length Commercially available component made of portion 41.

As clearly shown in Fig. 4, Fig. 5, Fig. 7, Fig. 8, above-mentioned linking part 210 is formed in the following way: in upper support plate Concave portion 112 is arranged in the periphery in portion 110, erects in the bottom support casting portion 130 in face of top and is connected with above-mentioned connection wall portion 120 Wall portion 211, and be disposed thereon the slit 212 of surface open in the wall portion 211.The slit 212 is above-mentioned linear cutting part Part 40 can pass through 41 intransitable width of above-mentioned major diameter.

In the present embodiment, in each holding mechanism 200, wrapping portion 220a, 220b, 220c, 220d are utilized by opposite It is wrapping in the 1st wrapping portion 220a existing for the circumferentially spaced interval of holding member 100 of linking part 210 and relative to the 1st Portion 220a respectively separates the four of the composition of the 2nd, the 3rd and the 4th wrapping portion 220b, 220c, 220d existing for specified interval in above-mentioned circumferential direction A wrapping portion is constituted.Each wrapping portion 220a, 220b, 220c, 220d are by erectting setting perpendicular to bottom support casting portion 130 Bearing forms the roll component 221 with the drum type of circumferential groove of section concave shape and constitutes in support shaft 222.In this way, roll Component 221 is supported in the cantilever-shaped support shaft 222 (Fig. 6) that lower end is fixed on to bottom support casting portion 130.In addition, top The top position of each roll component 221 of supporting board 110 by when overlooking in face of each roll component 221 in a manner of be formed with it is above-mentioned Notch section 111.

Above-mentioned holding mechanism 200 also has the use mechanism 230 easy to install for becoming easy the installation of linear cutting part 40, This it is easy to install with mechanism 230 by setting groove portion 122 formation, the groove portion 122 comprising by multiple wrapping portion 220a, 220b, The behind position of the wrapping portion 220a (the 1st wrapping portion) near above-mentioned linking part 210 in 220c, 220d is to from above-mentioned connection The connected straight line L (Fig. 4, Fig. 5) in the behind position of the farthest wrapping portion 220d in portion 210 (the 4th wrapping portion), and to above-mentioned maintaining part The radial direction foreign side of part 100 is open.In the present embodiment, it is provided in above-mentioned connection wall portion 120 towards adjacent and is wrapping with (protrusion 121 passes through in each of upper support plate portion 110 for protrusion 121 outstanding between portion 220a, 220b, 220c, 220d Roll component 221 top position setting notch section 112 and the protruding portion 113 with the periphery for being formed in upper support plate portion 110 Plane position it is corresponding), but make side in these protrusions 121 or even the connection recessed radial direction of wall portion 120, be formed with bottom 122a linearly extends to the slot of the behind position of above-mentioned 4th wrapping portion 220d from the behind position of above-mentioned 1st wrapping portion 220a Portion 122.The bottom 122a of the groove portion 122 is not necessarily needed to be linearly, as long as being also possible to deeper comprising above-mentioned straight line L The groove portion of formation.The width up and down of the groove portion 122 is corresponding with the above-mentioned linear diameter of cutting part 40, and being preferably set to can will be recessed Enter the width up and down that the linear cutting part 40 of the groove portion 122 is constrained in the up-down direction.

In the present embodiment, be also provided on above-mentioned holding mechanism 200 prevent from being hung on above-mentioned wrapping portion 220a, The 1st anti-detachment mechanism that the linear cutting part 40 of 220b, 220c, 220d are detached from from above-mentioned 220a, 220b, 220c, 220d 240.That is, also working as the 1st anti-detachment mechanism 240 as the above-mentioned groove portion 122 easy to install for using mechanism 230 to be formed.

In the present embodiment, being additionally provided with prevents from being easy with the linear cutting part 40 that linking part 210 links from the company The 2nd anti-detachment mechanism 250 that knot 210 is detached from.2nd anti-detachment mechanism 250 formed linking part 210 wall portion 211 with it is upper It states and is provided between the 1st wrapping portion 220a from the connection protrusion 123 protruding outward in the radial direction of wall portion 120, butt and connection The linear cutting part 40 that portion 210 links bypasses the behind of the 1st wrapping portion 220a of direction behind the protrusion 123.

According to Fig. 4, Fig. 5 it is found that the holding member 100 of present embodiment is about two for clipping center and being located at opposite side The diameter that the linking part 210 at position is connected to each other is symmetrically constituted.Thereby, it is possible to by linear cutting part 40 from linking part It is hung on wrapping portion 220a, 220b, 220c, 220d on 210 paths in the clockwise direction, on the contrary, also can be by it from even Knot 210 rises is hung on wrapping portion 220a, 220b, 220c, 220d on path counterclockwise.Pass through this structure, Neng Gougen Linear cutting part 40 is suitably installed according to the direction of rotation of rotating knife A.

The component 500 that contacts to earth includes center canister portion 511 and extends from the lower end of the center canister portion 511 and have than holding member The round pan portion 520 of the big outer diameter of 100 outer diameter.The circle pan portion 520, which has, gets over outside from center canister portion 511 towards radial direction Fang Yue is displaced upwards, lower surface is in the substantially dome-shaped portion 521 of dome shape bulging and from the dome-shaped portion 521 to radius side Horizontal-extending peripheral part 522 outward.In this embodiment, center canister portion 511 is nearby formed by metal, round pan portion 520 rest part is formed by resin.In the inner surface of the center canister portion 511 of the guide member 500, by being pressed into along axial weight The outer rings 531 of two folded bearings 530 and keep two bearings 530.The guide member 500 passes through in the bearing 530 for making upside Inner ring 532 abutted with the lower surface of the boss portion 102 of holding member 100 in the state of pass through these bearings 530 and keep The front end internal thread part of the thread spindle 15 of the centre bore 101 of the boss portion 102 of component 100 is screwed into the front end side of above-mentioned installation axle 14 External screw thread 14b can be supported centered on its axis (axis of installation axle 14) with the relative rotation relative to the thread spindle 15.Together When, holding member 100 cannot be supported with the relative rotation relative to installation axle 14.

It is appreciated that linear cutting part 40 is held in holding mechanism 200 in the following way from Fig. 4, Fig. 5: from it Front end side is inserted between raised part 123 and the 1st wrapping portion 220a, and front end passes through above-mentioned groove portion 122 from the 4th wrapping portion 220d's Further extend behind to radial direction foreign side, after so that radicle side is bypassed the outside of raised part 123, from above-mentioned wall portion 211 Upper surface be embedded in slit 212, finally stretch front end side so that the side of large-diameter portion 41 and wall portion 211 engages.As described above, Because forming the groove portion 122 easy to install with mechanism 300 includes from the behind position of the 1st wrapping portion 220a to the 4th wrapping portion 220d Behind position straight line L, so as described above, linear cutting part 40 is not made to bend and be only inserted into, it will be able to be easy It guides to necessary position, in addition, being only embedded into the slit 212 of above-mentioned wall portion 211 can link with linking part 210, it is linear The installation of cutting part 40 carries out extremely simplely.In the mounted state, using can be used as above-mentioned protrusion 121 (anti-detachment wall) The above-mentioned groove portion 122 to work with the 1st anti-detachment mechanism 240 prevent linear cutting part 40 from each wrapping portion 220a, 220b, 220c, 220d are detached from.In addition, the radicle of linear cutting part 40 is because utilizing the above-mentioned of the 2nd anti-detachment mechanism 250 of formation Protrusion 123 is forced from the upper above-mentioned slit 212 of insertion in the state of bending, so being not easy to be detached from from slit 212.

Linear cutting part 40 is gradually shortened by abrasion.In this case, linear cutting part 40 can be extended as follows Development length.That is, the linear cutting part 40 of the 4th wrapping portion 220d will be hung on first as shown in imaginary line in Fig. 5 again It is hung on the 3rd wrapping portion 220c.In the present embodiment, because the peripheral part in upper support plate portion 110, which is formed with, makes each roller Shape component 221 faces the notch section 111 of top, so being easy the work for carrying out dismantling linear cutting part 40 from roll component 221 Industry and the operation for being hung on adjacent roll component 221.In this way, the development length extension of linear cutting part 40 is equivalent to phase The length of distance between adjacent roll component 221.The front end of linear cutting part 40 wear again and what development length shortened In the case of, as long as carrying out operation similar to the above and linear cutting part 40 being hung on the 2nd from the 3rd wrapping portion 220c again Wrapping portion 220b.In the case where the front end of linear cutting part 40 is further worn out and development length shortens, similarly As long as linear cutting part 40 is hung on the 1st wrapping portion 220a from the 2nd wrapping portion 220b again.It is being hung on volume 1 In the case that development length further shortens in the state of extension portion 220a, linear cutting part 40, linear cutting part 40 are replaced It is removed by lifting large-diameter portion 41 upwards from slit 212, and stretches the large-diameter portion 41 and can easily remove, Neng Gouru It is above described to be easily installed new linear cutting part 40 like that.

When starting put-put 400a, the power of engine 400a is transmitted to by deceleration by centrifugal clutch Mechanism 430, rotating knife A are started together with installation axle 14.In the present embodiment, holding member 100 revolves together with installation axle 14 Turn, therewith, linear cutting part 40 circles round at a high speed.Installation axle 14 or even linear cutting part 40 are for example with 6000~10000rpm It is rotated.By the convolution of this linear cutting part 40, the grass grown on ground can be cut off.

In the present embodiment, it is provided with as described above in the bottom of holding member 100 relative to the opposite rotation of installation axle 14 Turn the component 500 that contacts to earth freely.The component 500 that contacts to earth is not applied the rotary force of installation axle 14, and in the shape with ground By the frictional force from ground under state, do not rotate.That is, the component 500 that contacts to earth does not revolve in the state that the component 500 that contacts to earth contacts to earth Turn, on the other hand, holding member 100 or even linear cutting part 40 circle round at a high speed.Therefore, in the present embodiment, Neng Gou It contacts to earth in the state of component 500 and ground, makes to contact to earth component 500 on one side and rotating knife A is slided along landing ground, carry out on one side The grass grown on ground is cut off.Moreover, in the present embodiment, because the outer diameter for the component 500 that contacts to earth is than holding member 100 Outer diameter is big, so utilizing the periphery for the component 500 that contacts to earth when carrying out cutting operation while sliding on the ground as described above Grass is prevented to enter in a manner of close to holding member 100, so can be attached with the front end for the linear cutting part 40 that high speed is circled round Close big kinetic energy cuts off grass.

The grass trimmer B of present embodiment is configured to be suitable for passing through in the state that the component 500 that makes to contact to earth contacts to earth with ground to lead Drawing keeps rotating knife A mobile and carries out mowing obliquely.

That is, as shown in figure 9, the grass trimmer B of present embodiment be for example suitable for carry out dykes and dams inclined-plane SL mowing, stand on dike The operator of the upper surface on dam extends downward the bearing part 300 of strip along the inclined-plane SL of dykes and dams, passes through the portion of contacting to earth Part 500 connects with inclined-plane, stays in the weight of the front end of grass trimmer B on inclined-plane, holds the 1st handle 310 and the 2nd handle 320, while cutting operation is carried out while carrying out mobile in a manner of drawing bearing part 300.

More specifically, the operator of the upper surface of dykes and dams is stood on the inclined-plane from right and on one side in the upper surface of dykes and dams It advances in the case where carrying out operation on one side, the appropriate portion (example as shown in figure 1 RH shown in part) of the 1st handle 310 is held with the right hand, (example is as shown in figure 1 shown in LH in the appropriate portion in the downward U-shaped portion 322 of the part extended to the left side of the 2nd handle 320 with left-handed Part), while with traction bearing part 400 or even rotation in the state of making to contact to earth component 500 as described above and inclined-plane contacts to earth The mode of rotor A is mobile in the upper surface of dykes and dams.The operator of the upper surface of dykes and dams is stood on the inclined-plane from left and existed on one side The upper surface of dykes and dams is advanced in the case where progress operation on one side, with the appropriate portion of the 1st handle 310 of left-handed, is held with the right hand The downward U-shaped portion 322 of the part extended to the right side of the 2nd handle 320, while in the component 500 and tiltedly of making to contact to earth as described above Bearing part 300 is drawn in face in the state of contacting to earth or even the mode of rotating knife A is mobile in the upper surface of dykes and dams.In this way, in this reality It applies in mode, which situation of operation no matter is carried out while operator is on one side the inclined-plane from right or the inclined-plane from left Under, the 1st handle 310 and the 2nd handle 320 can be made to be located at and be suitable for using two hands traction bearing part 300 or even rotating knife A Position.

In grass trimmer B because will account for the most put-put 400a and rotating knife A of its total weight at Ground centralized configuration is integrated in the front end of bearing part 300, so can make rotating knife A's when carrying out above-mentioned operation The component 500 that contacts to earth reliably contacts to earth along landing ground (inclined-plane).Moreover, the butt of the bearing part 300 less kept to operator Portion, i.e. the 1st and the 2nd handle 310,320 apply weight, and the weight that operator should support in operation is extremely light, can significantly mitigate Labour of the operator in cutting operation obliquely.

In addition, the grass trimmer B of embodiment can make the length of bearing part 300 in the range, preferably of 1.5~3.5m The range of 1.7~3.0m is flexible, even also can easily be removed as above-mentioned so reach the inclined surface of dykes and dams of 3m etc. Careless operation.

Moreover, the component 500 that contacts to earth because of the spherical shape bulging in lower surface, as shown in Figure 10, can be cut with threadiness The mode that component 40 reaches the root of grass tilts rotating knife A, is able to carry out the behaviour for fitly cutting off grass from its root Make.At this point, even if with the linear cutting part 40 of high speed convolution and ground face contact, because the threadiness cutting part 40 can be soft Ground deforms, so also there is no the risk that soil or the gravelstone strength on the ground as metal cutlery are takeoff, is Safety.

Certainly, the scope of the present invention is not limited to above-mentioned embodiment, the institute in range recorded in each claims Have altered and is all contained in the scope of the present invention.

For example, use, which has, in embodiments has used the nylon wire cutting for possessing unique structure as rotating knife A The structure of the cutting part 100a of knife, but the structure of cutting part 100a is without being limited thereto, or it is equipped in installation axle hard The structure of matter alloy blade or other metal cutteves.In addition, as long as the component 500 that contacts to earth substantially is relative to installation axle 14 To holding member 100 centered on the axle center of installation axle 14 can relative rotation, the specific structure for this is not limited to reality Apply mode.

Claims (8)

1. a kind of portable power grass trimmer characterized by comprising

Bearing part extends to strip, and can change length in the range of 1.5~3.5m；With

Rotating knife is installed on the front end of the bearing part, the power source of the front end by being supported on the bearing part Driving,

The rotating knife includes:

Cutting part is installed on the installation axle rotated by the power of the power source, rotates together with the installation axle； With

Contact to earth component, is located at the lower section of the cutting part, can be rotated centered on the installation axle,

It is provided on the bearing part for being held for operator and the bearing part is assigned to its radicle direction Tractive force handle.

2. portable power grass trimmer as described in claim 1, it is characterised in that:

The handle includes:

1st handle is installed on the radicle of the bearing part, for by the hand gripping of operator；With

2nd handle is installed on the position of the 1st handle on the front described in the ratio of the bearing part, for by the another of operator One hand is held.

3. portable power grass trimmer as claimed in claim 2, it is characterised in that:

1st handle forms horizontally long ring-type in the end on observation of the bearing part.

4. portable power grass trimmer as claimed in claim 2 or claim 3, it is characterised in that:

2nd handle symmetrically has lateral extensions and the then cross in the end on observation of the bearing part To the downward U-shaped portion of extension.

5. portable power grass trimmer as described in any one of claims 1 to 4, it is characterised in that:

The cutting part includes:

Holding member links with the installation axle；With

Linear cutting part, butt side are held in the holding member, the radial direction foreign side of the lateral holding member in front end Extend.

6. portable power grass trimmer as claimed in claim 5, it is characterised in that:

The component that contacts to earth is with the outer diameter bigger than the maximum outside diameter of the holding member, and the threadiness cutting part is with its front end Square mode more outward than the periphery of the component that contacts to earth is extended to be used.

7. such as portable power grass trimmer described in claim 5 or 6, it is characterised in that:

The holding mechanism that the butt side of the threadiness cutting part is arranged at the holding member is kept,

The holding mechanism includes:

Linking part links one end of the linear cutting part；With

Multiple wrapping portion are wrapping with the linear cutting part in the circumferential array of the holding member.

8. portable power grass trimmer as claimed in claim 7, it is characterised in that:

It further include that become easy the installation of the linear cutting part easy to install uses mechanism,

It is described it is easy to install formed with mechanism by groove portion, the groove portion include by the multiple wrapping portion near the linking part Wrapping portion behind position to the wrapping portion farthest from the linking part the connected straight line in behind position including, to the guarantor The radial direction foreign side for holding component is open.