CN105075493A - Grass trimmer - Google Patents

Abstract

The invention provides a grass trimmer comprising an extension rod assembly, a grass trimming head, a handle, a motor driving the grass trimming head to rotate, and a switch used for controlling the motor. The grass trimming head comprises a thread spool used for arranging a grass trimming thread. The grass trimmer also comprises a manual thread releasing mechanism comprising an operation member independent of the switch, a transmission member controlled by the operation member and a driving device driven by the transmission member to drive the thread spool to release the grass trimming thread. The extension rod assembly comprises a longitudinally-extending first extension rod and a second extension rod connected to the first extension rod movably. The handle is arranged on the first extension rod and the grass trimming head is arranged on the second extension rod. The first and second extension rods are provided with inner cavities. The transmission member is basically arranged in the inner cavities of the first extension rod and the second extension rod. The grass trimmer can reduce the loss of the grass trimming thread and is small in packaging size.

Description

Mower

Technical field

The present invention relates to a kind of garden instrument, particularly relate to a kind of mower.

Background technology

Green vegetation is the requisite a kind of environmental key-elements of we mankind, and the consciousness of greening becomes more and more popular.No matter the courtyard of golf course, football pitch, villa garden, villa, or common residential quarter, green turf is ubiquitous, brings life and vigor to the life of people.If but have left arranging of people, these turfs can become height rise and fall, disorderly and unsystematic.

Mower, as a kind of garden instrument arranging turf, is just being subject to the favor of more and more user.Mower generally by driving beat the grass line rotate make it to beat the grass, generally include extension rod, the moving head being located at extension rod one end that lengthwise extends, be located on extension rod and keep at a certain distance away the handle arranged, the motor driving moving head to rotate with moving head, moving head comprises lid that holding seat and holding seat connect, is arranged on drum between holding seat and lid, and line of beating the grass to be wrapped on drum and to stretch out from holding seat.During work, moving head be driven in rotation drive beat the grass line locking rotate thus beat the grass.

Beat the grass because line of beating the grass rotates, therefore, line end of beating the grass is very easy to wearing and tearing, and the line of beating the grass after wearing and tearing does not reach required radius of beating the grass, and efficiency of beating the grass reduces greatly.For solving the problem, mower needs arrange payingoff mechanism, to adjust on suitable opportunity the length that line of beating the grass stretches out holding seat.

Common payingoff mechanism has two kinds, and one is switching on and shutting down automatic paying-out mechanisms, as the term suggests, switching on and shutting down payingoff mechanism all can unwrapping wire automatically when each startup and shutdown, without the need to extra operation, but all can unwrapping wire just because of each startup and shutdown, line loss of beating the grass consumption is very serious.Another kind is manual payingoff mechanism, comprises the operating parts for operator's operation, is controlled and be movably set in the steel wire rope on extension rod by operating parts, is driven to drive drum to discharge the drive unit of line of beating the grass by steel wire rope.Operator just can realize the manual unwrapping wire of drum by operation operating parts, but in order to meet operation comfort, extension rod all does very long usually, so substantially increases the packaging volume of mower, is not only inconvenient to transport, and improves cost of transportation.

Summary of the invention

For overcoming the defect of prior art, first technical problem to be solved by this invention is to provide and a kind ofly not only reduces beat the grass line loss consumption and the less mower of packaging volume.

For solving the problems of the technologies described above, first technical scheme of the present invention is:

A kind of mower, comprise extension rod assembly, be located at the moving head of described extension rod assembly one end, be located on described extension rod assembly and to keep at a certain distance away the handle arranged, the motor driving described moving head to rotate around rotation with described moving head, controlling the switch of described motor.Described moving head comprises the drum for arranging line of beating the grass, described mower also comprises manual payingoff mechanism, described manual payingoff mechanism comprises the operating parts independent of described switch, the driving member controlled by described operating parts, by described driving member drive with drive described drum discharge described in beat the grass the drive unit of line, described extension rod assembly comprises the first extension rod that lengthwise extends and the second extension rod being movably connected on described first extension rod, described first extension rod is located at by described handle, described moving head is located at described second extension rod, described first and second extension rods are equipped with inner chamber, described driving member basic setup is in the inner chamber of described first and second extension rods.

Compared with prior art, mower of the present invention comprises manual payingoff mechanism, and this manual payingoff mechanism, by controlling independent of the operating parts of switch-linear hybrid, avoids the waste of each switching on and shutting down all unwrapping wire, the loss of line thus minimizing is beaten the grass; And extension rod assembly is set to the first and second extension rods of flexible connection mutually, when transport or when depositing mower, makes to produce relative movement between the first and second extension rods, thus greatly reduce the packaging volume of mower.

Preferably, described first and second extension rods have the primary importance mutually connected and the second place of mutually throwing off.

Preferably, adopt between described first and second extension rods and be threaded.

Preferably, described first extension rod is provided with electrode slice, and described second extension rod is provided with electric wire, and when described first extension rod and the second extension rod connect, described electrode slice is electrically connected with described electric wire.

Preferably, described driving member comprises the first driving section be connected with described operating parts and the second driving section arranged relative to described first driving section activity, and described second driving section is connected with described drive unit.

Preferably, when described first extension rod and the second extension rod connect mutually, described first driving section and the second driving section connect mutually, and when described first extension rod and the second extension rod are thrown off mutually, described first driving section and the second driving section are thrown off mutually.

Preferably, described manual payingoff mechanism also comprises the match connecto be located between described first driving section and the second driving section, described match connecto comprises to be located in described first extension rod and the counterpart be connected with described first driving section, to be located in described second extension rod and the sliding part be connected with described second driving section, described sliding part can connect with described counterpart or throw off.

Preferably, described match connecto also comprises the actuating device be located at described first extension rod and connected for impelling described counterpart and sliding part, thus described first driving section and the second driving section are linked together, operate described operating parts, by described first driving section, drive described second driving section to move to the direction near described operating parts, drive described drum to discharge line of beating the grass to drive described drive unit.

Preferably, described actuating device comprises the ring-type pedestal be fixed in described first extension rod, described ring-type pedestal comprises the Part II that Part I and internal diameter are less than described Part I, described counterpart can be moved to the second place to the direction near described operating parts from primary importance by the bearing of trend operatively along described first extension rod, during primary importance, described counterpart and described sliding part are thrown off, during the second place, described Part II impels described counterpart and described sliding part to connect.

Preferably, described match connecto also comprises the first elastic component be located at for impelling described counterpart and sliding part to throw off between described counterpart and described first extension rod.

Preferably, described match connecto also comprises the slide block being located at described ring-type pedestal movably, and described first driving section is connected to described slide block, and described counterpart pivotable is arranged at described slide block, and described first elastic component is located between described counterpart and described slide block.

Preferably, described match connecto also comprises and being located between described slide block and described ring-type pedestal for impelling described slide block to the tensioning apparatus of the direction movement away from described operating parts.

Preferably, described tensioning apparatus comprises the second elastic component be located between described ring-type pedestal and slide block.

Preferably, described actuating device comprises activity and is located at described first extension rod and the actuated piece abutted against with described counterpart and the impeller being located at described second extension rod, when described first extension rod and the second extension rod connect, described impeller promotes the motion of described actuated piece, and described actuated piece impels described counterpart and described sliding part to connect.

Preferably, described actuated piece is connected with described first extension rod, and the first extension rod and the second extension rod are connected mutually.

Preferably, described actuated piece moves and is coupled to described first extension rod.

Preferably, the moving direction of described actuated piece is perpendicular to the bearing of trend of described first extension rod.

Preferably, described match connecto also comprises the holding device be located at for impelling described counterpart and sliding part to throw off between described counterpart and described first extension rod.

Preferably, described holding device comprises Flexible element.

Preferably, described Flexible element is torsion spring.

Preferably, described match connecto also comprises and being located between described counterpart and described first extension rod for impelling described counterpart to the tensioning apparatus of the direction movement away from described operating parts.

Preferably, described tensioning apparatus comprises flexible member.

Preferably, described flexible member is set to stage clip, and described stage clip is arranged along the lengthwise bearing of trend of described first extension rod.

Preferably, described counterpart can pivotable relative to described first extension rod.

Preferably, described first extension rod is scalable relative to the second extension rod.

Preferably, described manual payingoff mechanism also comprises the pulley assembly be located in described extension rod assembly, and described driving member is arranged at described pulley assembly.

Preferably, described pulley assembly comprises the fixed pulley that is fixed at described first extension rod and to be connected with described operating parts and can by operatively along the movable pulley of the bearing of trend movement of described first extension rod, described movable pulley than fixed pulley closer to described operating parts, described driving member is sheathed on described fixed pulley and described movable pulley outer rim, described driving member comprises the stiff end being fixedly connected on described second extension rod and the movable end being connected to described drive unit, and described stiff end is between described fixed pulley and movable pulley.

Preferably, the diameter of described fixed pulley is less than the diameter of described movable pulley.

Preferably, one of outer rim tangent line between described fixed pulley and movable pulley is parallel to the bearing of trend of described first extension rod.

Preferably, described manual payingoff mechanism also comprises the resetting means be located at for making described movable pulley reset between described movable pulley and described first extension rod.

Preferably, described resetting means comprises the second stage clip.

Preferably, described driving member is flexible drive axle.

Second technical problem to be solved by this invention is to provide one mower using method simply and easily.

For solving the problems of the technologies described above, second technical scheme of the present invention is:

A kind of using method of mower, described mower comprises the first extension rod that lengthwise extends and the second extension rod being movably connected on described first extension rod, be located at the handle of described first extension rod, be located at the moving head of described second extension rod away from first extension rod one end, drive the motor that described moving head rotates around rotation, control the switch of described motor, described moving head comprises the drum for arranging line of beating the grass, described mower also comprises manual payingoff mechanism, described manual payingoff mechanism comprises the operating parts independent of described switch, controlled by described operating parts and be located at the driving member of described first and second extension rod inner chambers, by described driving member drive with drive described drum discharge described in beat the grass the drive unit of line, described using method comprises the steps: described first extension rod and the second extension rod to connect, operate described operating parts, described driving member drive described drive unit drive described drum discharge described in beat the grass line.

Compared with prior art, mower of the present invention, connects the first extension rod and the second extension rod, just can operate operating parts, makes driving member drive drive unit to drive drum to discharge line of beating the grass.Therefore operate very simple, convenient.

Preferably, the second driving section that described driving member comprises the first driving section and is flexibly connected with described first driving section, after described using method comprises the steps: described first extension rod and the second extension rod to connect further, operate described operating parts again to pull described first driving section, described first driving section and the second driving section are linked together.

Preferably, the second driving section that described driving member comprises the first driving section and is flexibly connected with described first driving section, after described using method comprises the steps: described first extension rod and the second extension rod to connect further, described first driving section and the second driving section link together.

Preferably, described first extension rod is provided with electrode slice, and described second extension rod is provided with electric wire, and when described first extension rod and the second extension rod connect, described electrode slice is electrically connected with described electric wire.

Accompanying drawing explanation

Below in conjunction with drawings and embodiments, the invention will be further described.

Fig. 1 is the stereogram that mower that first embodiment of the invention provides removes moving head place side casing;

Fig. 2 is the complete machine generalized section of the mower that first embodiment of the invention provides;

Fig. 3 is the enlarged diagram of first, second extension rod junction of the mower shown in Fig. 2, and now the first extension rod and the second extension rod are thrown off, and the first driving section and the second driving section are thrown off;

Fig. 4 is the enlarged diagram of first, second extension rod junction of the mower shown in Fig. 2, and now the first extension rod coordinates with the second extension rod, and the first driving section is in the non-free state pulled, and the first driving section and the second driving section are thrown off;

Fig. 5 is the enlarged diagram of first, second extension rod junction of the mower shown in Fig. 2, now the first extension rod coordinates with the second extension rod, first driving section is in the state of being pulled, and the second driving section does not produce motion, and the first driving section and the second driving section connect;

Fig. 6 is the enlarged diagram of first, second extension rod junction of the mower shown in Fig. 2, now the first extension rod coordinates with the second extension rod, first driving section and the second driving section connect, and the first driving section is in the state of being pulled and makes the second driving section move a certain distance to carry out unwrapping wire relative to the second extension rod;

Fig. 7 is the amplification view of first, second extension rod junction of mower that second embodiment of the invention provides, and now the first extension rod and the second extension rod are thrown off, and the first driving section and the second driving section are thrown off;

Fig. 8 is the amplification view of first, second extension rod junction of mower that second embodiment of the invention provides, and now the first extension rod coordinates with the second extension rod part, and actuated piece is not pushed, and the first driving section and the second driving section are thrown off;

Fig. 9 is the amplification view of first, second extension rod junction of mower that second embodiment of the invention provides, now the first extension rod and the second extension rod connect completely, and actuated piece is pushed, and the first driving section and the second driving section connect, first driving section is in the non-free state pulled;

Figure 10 is the amplification view of first, second extension rod junction of mower that second embodiment of the invention provides, now the first extension rod and the second extension rod connect completely, first driving section and the second driving section connect, and the first driving section is in the state of being pulled and makes the second driving section move a certain distance to carry out unwrapping wire relative to the second extension rod;

Figure 11 is the amplification view of first, second extension rod junction of mower that third embodiment of the invention provides, and now the second extension rod is in extended position relative to the first extension rod, and movable pulley is in free state;

Figure 12 is the amplification view of first, second extension rod junction of mower that third embodiment of the invention provides, and now the second extension rod is in retracted position relative to the first extension rod, and movable pulley is in free state;

Figure 13 is the amplification view of first, second extension rod junction of mower that third embodiment of the invention provides, now the second extension rod is in retracted position relative to the first extension rod, movable pulley is in the state of being pulled, and driving member is driven and moves a certain distance to carry out unwrapping wire relative to the second extension rod.

Wherein,

15, extension rod assembly 64, first end 116, open end

22, moving head 66, the second end 118, pars intermedia

23, main handle 68, the first lug boss 120, internal thread

24, assist handle 70, the first stopper section 124, angle

26, motor 72, the first ring-type pedestal 126, elastic component

27, switch 74, Part I 127, the second projection

28, holding seat 76, Part II 128, the second ring-type pedestal

30, lid 80, the first elastic component 129, elastic component

32, drum 82, the first slide block 130, first extension rod

34, line 84 of beating the grass, projection 132, the second extension rod

36, rotating shaft 86, the first mating part 133, driving member

38, power brick 88, the second mating part 134, fixed pulley

40, operating parts 90, the second elastic component 136, movable pulley

41, driving member 92, inner chamber 140, stiff end

42, drive unit 94, limiting section 142, movable end

43, lever 96, the first extension rod 146, outer rim tangent line

46, first extension rod 98, second extension rod 150, moving pulley bracket

47, electrode slice 100, the first driving section 152, limiting section

48, second extension rod 102, second driving section 154, control piece

49, electric wire 104, the second counterpart 156, elastic component

50, external screw thread 105, the second slide block 158, mount pad

52, internal thread 106, the second sliding part 160, cavity

54, first sleeve 108, actuated piece 162, butting section

56, second sleeve the 110, three sleeve pipe 200, mower

57, first driving section 111, external screw thread

58, second driving section 112, impeller

60, first counterpart 114, link

62, first sliding part

Embodiment

As depicted in figs. 1 and 2, the mower 200 of the present embodiment comprises extension rod assembly 15, be located at the moving head 22 of extension rod assembly 15 one end, to be located on extension rod assembly 15 and to keep at a certain distance away the handle arranged with moving head 22, drive the motor 26 that moving head 22 rotates around rotation, switch 27. moving head 22 of control motor 26 comprises the drum 32 for arranging line 34 of beating the grass, in addition in the present embodiment, moving head 22 also comprises holding seat 28, the lid 30 connected with holding seat 28, drum 32 is arranged between holding seat 28 and lid 30, line 34 of beating the grass to be wrapped on drum 32 and to stretch out from holding seat 28.

When mower 200 works, moving head 22 is driven rotation by motor 26, drives line 34 of beating the grass to rotate and forms cut surface.Mower 200 to be mentioned by handle the line 34 that makes to beat the grass and is rotated along it cut surface formed and beat the grass by user.

For convenience of description, " axis ", " circumference " of this specification and other description relevant to orientation all with the rotation of moving head 22 for reference.As the bearing of trend that " axis " is the rotation along moving head 22; " circumference " is the direction of the rotation around moving head 22.

In the present embodiment, drive the motor 26 of moving head 22 coaxially to arrange with moving head 22, more excellent, the output shaft Direct driver moving head 22 of motor 26, namely the rotating shaft 36 of moving head 22 is the output shaft of motor 26, simple and compact for structure.It may occur to persons skilled in the art that, other that also motor 26 can be arranged on extension rod assembly 15 is arbitrarily local and drive moving head 22 to rotate by specific transmission mechanism also can.

In the present embodiment, extension rod assembly 15 is provided with power source away from one end of moving head 22, is specially power brick 38, is preferably lithium battery bag.Thus, power source and moving head 22 are located at the two ends of extension rod assembly 15 respectively, and handle is positioned at the stage casing of extension rod assembly 15 relatively near the position of power source, thus whole mower 200 center of gravity is rationally distributed, and operator is mentioned by handle can be comparatively laborsaving when mower 200 works.

As depicted in figs. 1 and 2, mower 200 also comprises manual payingoff mechanism, and manual payingoff mechanism comprises the operating parts 40 arranged independent of switch 27, the driving member 41 controlled by operating parts 40, driven to drive drum 32 to discharge the drive unit 42 of line 34 of beating the grass by driving member 41.

In the present embodiment, the holding part that operating parts 40 is adjacent to handle is arranged.The holding part of handle refers to the part that on handle, operator holds with a hand.The holding part of the contiguous handle of operating parts is arranged, and operator can be in one's hands control operation part 40 while handle and the unwrapping wire of stopping, without the need to interrupting the work of mower 200, easy to operate.Certain operating parts also can be arranged on other position of mower 200.

Because this manual payingoff mechanism is by controlling independent of the operating parts 40 of switch 27, avoids the waste of all unwrapping wire of at every turn starting shooting, thus reducing the loss of line of beating the grass.

Preferably, driving member 41 is flexible drive axle 41, concrete, and driving member 41 is steel wire.Preferably, flexible drive axle 41 is contained in extension rod assembly 15 substantially, can protect flexible drive axle 41, thus extends the life-span of flexible drive axle 41.Flexible drive axle 41 is substantially contained in extension rod assembly 15 and refers to that the major part of flexible drive axle 41 is contained in extension rod assembly 15, and flexible drive axle partly can be contained in in the casing near moving head at least in addition.In addition, the partially flexible power transmission shaft be connected with operating parts may be exposed at outside extension rod assembly, and certainly, this part flexible drive axle also can be contained in assist handle and extension rod assembly.It may occur to persons skilled in the art that, other driving member, as other wire, plastic tape or litzendraht wire also can.All employings and the similar technical scheme of the present embodiment all should be encompassed in protection scope of the present invention.

In the present embodiment, handle comprises the main handle 23 and assist handle 24 that keep at a certain distance away and arrange, and switch 27 is arranged on main handle 23, and operating parts 40 is arranged on main handle 23 equally.Setting like this, operator only just need can control mower 200 by the switch 27 on operation main handle 23 and operating parts 40 and carry out work of beating the grass and unwrapping wire.Certainly, switch 27 and operating parts 40 also can be separately positioned on main handle 23 and assist handle 24, and the operation of such switch 27 and operating parts 40 is non-interference.Operator is when controlling mower 200 and working by assist handle 24, when wanting to carry out unwrapping wire operation to drum 32, only need to take advantage of a situation on assist handle 24 control operation part 40, and do not need the duty changing mower 200, also the work of beating the grass of mower 200 can not be interrupted, easy to operate, this advantage is more obvious when mower 200 is in deburring state.Certainly, operating parts 40 is arranged on other position of mower 200, as be arranged on extension rod assembly 15 near the position of main handle or assist handle or be arranged on main handle with switch gap certain distance also can, as long as can be mentioned by handle can also control operation part while mower 200 makes it to beat the grass for operator.All employings and the similar technical scheme of the present embodiment all should be encompassed in protection scope of the present invention.

Drive unit 42 comprises the lever 43 controlled by operating parts 40 that to be connected with driving member 41.Lever 43 drives drum 32 between a first state and a second state along the axially-movable of the rotation of moving head 22.In the first state, drum 32 and holding seat 28 synchronous rotary; In the second state, between drum 32 and holding seat 28, produce rotary speed difference.

In the first state, drum 32 and holding seat 28 synchronous rotary, be wrapped in beat the grass line 34 and holding seat 28 synchronous rotary on drum 32, and the part that line 34 of beating the grass stretches out holding seat 28 rotates and can beat the grass, and can prune lawn.

In the second state, drum 32 and holding seat 28 depart from, the centrifugal force that line 34 of beating the grass rotates drives drum 32 and holding seat 28 to produce relative motion, thus it is poor to produce rotary speed, and then the centrifugal force of line 34 of beating the grass can pull it outwards to throw away a part to realize unwrapping wire, namely longer line 34 free end of beating the grass stretches out outside holding seat 28, makes mower 200 have larger radius of beating the grass.

Extension rod assembly 15 comprises the first extension rod 46 that lengthwise extends and the second extension rod 48 being movably connected on the first extension rod 46, the first extension rod 46 is located at by handle, moving head 22 is located at the second extension rod 48, first extension rod 46 and the second extension rod 48 are equipped with inner chamber, and driving member 41 basic setup is in the inner chamber of the first extension rod 46 and the second extension rod 48.So, adopt between first extension rod 46 and the second extension rod 48 and be flexibly connected, in transport with when depositing mower 200, the second extension rod 48 can be made to move relative to the first extension rod 46, to reduce the volume of mower, thus greatly reduce the packaging of mower 200 and deposit volume, reduce packaging, cost of transportation and save parking space.

With further reference to Fig. 3 to Fig. 6, preferably, the first extension rod 46 and the second extension rod 48 have the primary importance mutually connected and the second place of mutually throwing off.So, when using mower, the first extension rod 46 and the second extension rod 48 connect mutually, now operate operating parts 40, and driving member 41 drives drive unit 42 to drive drum to discharge line of beating the grass.Thus operate height for operator improves, substantially improve operation man-machine.And when transporting and deposit mower, first extension rod 46 and the second extension rod 48 are thrown off mutually, like this, the first extension rod 46 and the second extension rod 48 overlap can be made to place, thus greatly reduce the packaging of mower and deposit volume, and then reduce packaging, cost of transportation and save parking space.

Further, adopt and be threaded, so arrange between the first extension rod 46 and the second extension rod 48, structure is simple, and cost is lower.First extension rod 46 arranges external screw thread 50, the second extension rod 48 is arranged the internal thread 52 that can connect with external screw thread 50.Internal thread 52 and external screw thread 50 connect the first extension rod 46 and the second extension rod 48 are linked together; Internal thread 52 and external screw thread 50 are thrown off and are connected the first extension rod 46 and the second extension rod 48 are thrown off mutually.Correspondingly, internal thread 52 also can be arranged on the first extension rod 46, and the external screw thread 50 that can connect with internal thread 52 is arranged on the second extension rod 48.

First extension rod 46 is provided with electrode slice 47, and the second extension rod 48 is provided with electric wire 49, and when the first extension rod 46 and the second extension rod 48 connect, electrode slice 47 is electrically connected with electric wire 49.Thus the electrical connection realized between power brick 38 and motor 26, carry out work of beating the grass.

For convenience of manufacturing and installing, the first extension rod 46 is fixedly installed the first sleeve 54, external screw thread 50 is arranged on the first sleeve 54.Second extension rod 48 is arranged rotationally the second sleeve 56, internal thread 52 is arranged at inside the second sleeve 56.So, only need rotate the second sleeve pipe and make it rotate relative to the second extension rod 48, make internal thread 52 and external screw thread 50 connect just can to realize the first extension rod 46 and the second extension rod 48 links together simultaneously.The second extension rod 48 can't be made to rotate relative to the first extension rod 46, thus make easy for installation, laborsaving.

The second driving section 58 that driving member 41 comprises the first driving section 57 and arranges relative to the first driving section 57 activity, when first extension rod 46 and the second extension rod 48 connect mutually, first driving section 57 and the second driving section 58 connect mutually, when first extension rod 46 and the second extension rod 48 are thrown off mutually, the first driving section 57 and the second driving section 58 are thrown off mutually.So, first extension rod 46 and the second extension rod 48 connect, and when the first driving section 57 and the second driving section 58 connect mutually, mower can carry out work of beating the grass, and operating parts 40 can be operated, drive drum 32 to discharge line (see Fig. 2) of beating the grass to be driven drive unit 42 by driving member.And the first extension rod 46 and the second extension rod 48 are thrown off mutually, when the first driving section 57 and the second driving section 58 are thrown off mutually, be convenient to deposit and transport mower.

Manual payingoff mechanism also comprises the match connecto be located between the first driving section 57 and the second driving section 58, match connecto comprises to be located in the first extension rod 46 and the first counterpart 60 be connected with the first driving section 57, to be located in the second extension rod 48 and the first sliding part 62, first sliding part 62 be connected with the second driving section 58 can connect with the first counterpart 60 or throw off.

First one end, driving section 57 and operating parts 40 (see Fig. 2) matched, the other end and the first counterpart 60 matched.Second one end, driving section 58 and drive unit 42 (see Fig. 2) matched, the other end and the first sliding part 62 matched.

In the present embodiment, the first counterpart 60 can pivotable relative to the first extension rod 46, thus connects or pivotable between the position of throwing off at the first sliding part 62.Certainly, the first counterpart 60 also can be arranged to move relative to the first extension rod 46, as long as can realize connecting with the first sliding part 62 or throwing off.

First sliding part 62 is located in the second extension rod 48 movably, and one end of the second driving section 58 is fixedly connected with the first sliding part 62, and the other end and the drive unit 42 of the second driving section 58 are matched.

First counterpart 60 comprises the first end 64 that connects with the first driving section 57 of driving member second end 66 relative with first end 64, second end 66 has the first lug boss 68, first sliding part 62 has the first stopper section 70, first lug boss 68 operationally by the first stopper section 70 backstop or disengagement, thus makes the first driving section 57 and the second driving section 58 connect or throw off.

Match connecto also comprises the first actuating device be located at the first extension rod 46 and connected for impelling the first counterpart 60 and the first sliding part 62.First actuating device comprises the first ring-type pedestal 72 be fixed in the first extension rod 46, first ring-type pedestal 72 comprises the Part II 76 that Part I 74 and internal diameter are less than Part I 74, when the first counterpart 60 moves from Part I 74 to Part II 76, Part II 76 impels the first counterpart 60 and the first sliding part 62 to connect.Thus the first driving section 57 and the second driving section 58 are linked together.

In the present embodiment, after the first extension rod 46 and the second extension rod 48 connect, need to operate operating parts 40, to pull the first driving section 57, the first driving section 57 and the second driving section 58 are linked together.As Fig. 4 and Fig. 5, concrete, pull operation part 40 (see Fig. 2) is with making the first driving section 57 drive the first counterpart 60 from Part I 74 to the process of Part II 76 movement, internal diameter because of Part II 76 is less than the internal diameter of Part I 74, thus impel the first counterpart 60 to the extension axis pivotable near the first extension rod 46, finally, first lug boss 68 of the first counterpart 60 and the first stopper section 70 of the first sliding part 62 matched, thus the first driving section 57 and the second driving section 58 to be linked together.As shown in Figure 6, now, continue to pull the first driving section 57, just can move a certain distance H1 relative to the second extension rod 48 in the second driving section 58, thus the second driving section 58 drives drive unit 42 to discharge to drive drum 32 line (see Fig. 2) of beating the grass.

Further, electrode slice 47 is arranged at the first ring-type pedestal 72, so, makes mower compact conformation.

Match connecto also comprises the first holding device be located between the first counterpart 60 and the first extension rod 46, and the first holding device is used for impelling the first counterpart 60 and the first sliding part 62 to throw off.So, can make can to realize between the first driving section 57 and the second driving section 58 connecting or throwing off repeatedly, thus further facilitate user and deposit mower.

First holding device comprises Flexible element.Flexible element comprises the first elastic component 80, and preferably, the first elastic component is set to torsion spring 80.Certainly, Flexible element also can be set to other elastic component such as stage clip, extension spring.

Further, be provided with the first slide block 82, first slide block 82 removable relative to the first extension rod 46 between the first counterpart 60 and the first extension rod 46, the first elastic component is located between the first counterpart 60 and the first slide block 82.And the first driving section 57 is connected to the first slide block 82.

As shown in Figure 4, in the present embodiment, the first counterpart 60 comprises the first mating part 86 and the second mating part 88, first slide block 82 is provided with the first projection 84.First mating part 86 and the second mating part 88 all pivotable are located on the first projection 84, and torsion spring 80 is also arranged on the first projection 84, and one end of torsion spring 80 and the first mating part 86 lean, and the other end and second mating part 88 of torsion spring 80 lean.When first driving section 57 is in free state, torsion spring 80 makes the first mating part 86 and the second mating part 88 separate larger angle, thus makes the first counterpart 60 and the first sliding part 62 keep throwing off.When pulling the first driving section 57, internal diameter because of Part II 76 is less than the internal diameter of Part I 74, thus impel the first mating part 86 and the second mating part 88 to overcome the elastic force of torsion spring 80, all to the extension axis pivotable near the first extension rod 46, finally, first counterpart 60 and the first sliding part 62 matched, thus the first driving section 57 and the second driving section 58 to be linked together.

In addition, the first counterpart 60 also can be arranged to only comprise a mating part, now one end of torsion spring 80 and above-mentioned mating part against, its other end and the first slide block 82 or the first extension rod 46 against.

Certainly, first counterpart 60 also can be arranged to elastic component, when pulling the first driving section 57, internal diameter because of Part II 76 is less than the internal diameter of Part I 74, first counterpart 60 produces distortion to the extension axis pivotable near the first extension rod 46, finally, the first counterpart 60 and the first sliding part 62 matched, thus the first driving section 57 and the second driving section 58 to be linked together.When release first driving section 57 makes it be in free state, the first counterpart 60 recovers deformation, thus throws off with the first sliding part 62.It may occur to persons skilled in the art that, other type first counterpart 60, as long as operationally can connect with the first sliding part 62 or throw off.All employings and the similar technical scheme of the present embodiment all should be encompassed in protection scope of the present invention.

Match connecto also comprises to be located between the first counterpart 60 and the first extension rod 46 for making the first slide block 82 to the first tensioning apparatus of the direction movement away from operating parts 40 (see Fig. 2).Thus driving member is control effectively to drive unit 42.

First tensioning apparatus comprises flexible member, and flexible member comprises the second elastic component 90.Preferably, the second elastic component 90 is set to stage clip 90, and stage clip 90 is arranged along the lengthwise bearing of trend of the first extension rod 46.Certainly, the second elastic component 90 also can be set to the elastic components such as torsion spring, extension spring or rubber parts.

In the present embodiment, the first ring-type pedestal 72 comprises inner chamber 92 and limiting section 94, and stage clip is arranged in inner chamber 92, and one end of stage clip 90 is resisted against limiting section 94, and the other end of stage clip 90 is resisted against the first slide block 82.When the first driving section 57 is in free state, stage clip 90 promotes the first slide block 82 and moves to the direction away from operating parts 40 (see Fig. 2), thus tensioning first driving section 57.And when operating operating parts 40, the first driving section 57 can be pulled to move to the direction near operating parts 40 with the active force driving the first slide block 82 to overcome stage clip 90, because the first counterpart 60 and the first sliding part 62 connect mutually, thus drive the second driving section 58 to move relative to the second extension rod 48, and then drive unit 42 is driven to drive drum 32 unwrapping wire.

As shown in Fig. 7 to 10, the second embodiment of the present invention.In the present embodiment, same between the first extension rod 96 with the second extension rod 98 have the primary importance mutually connected and the second place of mutually throwing off, and between the first extension rod 96 with the second extension rod 98, same employing is threaded.Difference is, the match connecto between the first driving section 100 and the second driving section 102.Describe in detail for above-mentioned difference below.

Still adopt between first extension rod 96 with the second extension rod 98 and be threaded, so, there is between the first extension rod 96 and the second extension rod 98 primary importance cooperatively interacted and the second place of mutually throwing off.

For convenience of mower use, transport and deposit, accordingly, when the first extension rod 96 and the second extension rod 98 coordinate, the first driving section 100 and the second driving section 102 cooperatively interact; When first extension rod 96 and the second extension rod 98 are thrown off, the first driving section 100 and the second driving section 102 are thrown off mutually.

Second counterpart 104 is still arranged to can pivotable relative to the first extension rod 96, thus connects or pivotable between the position of throwing off at the second sliding part 106.Certainly, the second counterpart 104 also can be arranged to move relative to the first extension rod 96, as long as can realize connecting with the second sliding part 106 or throwing off.

Be provided with second one end, slide block 105, first driving section 100 between second counterpart 104 and the first extension rod 96 to be movably connected with operating parts 40 (see Fig. 2), first driving section 100 other end is connected with the second slide block 105.Second counterpart 104 pivotable is located on the second slide block 105.

Match connecto comprises the second actuating device be located at the first extension rod 96 and connected for impelling the second counterpart 104 and the second sliding part 106 equally.

In the present embodiment, second actuating device comprises activity and is located at the first extension rod 96 and the actuated piece 108 abutted against with the second counterpart 104 and the impeller 112 being located at the second extension rod 98, when first extension rod 96 and the second extension rod 98 connect, impeller 112 promotes actuated piece 108 and moves, actuated piece 108 impels the second counterpart 104 and the second sliding part 106 to connect further, and then the first driving section 100 and the second driving section 102 are linked together, pull operation part 40 (see Fig. 2), the first driving section 100 and the second driving section 102 is just driven to move relative to the first extension rod 96 and the second extension rod 98, thus drive drive unit 42 to drive drum 32 to discharge line 34 (see Fig. 2) of beating the grass.

Preferably, actuated piece 108 moves and is coupled to the first extension rod 96.The moving direction of actuated piece 108 is perpendicular to the bearing of trend of the first extension rod 96.

Preferably, impeller 112 is connected with the first extension rod 96, and then the first extension rod 96 and the second extension rod 98 are connected mutually, thus mower is beaten the grass.Setting like this, impeller 108 connecting not only for the first extension rod 96 and the second extension rod 98.Simultaneously for making the second counterpart 104 and the second sliding part 106 connect, thus make this mower compact conformation, cost is lower, and while the first extension rod 96 and the second extension rod 98 are connected mutually, just can realize the second counterpart 104 and the second sliding part 106 connects mutually, therefore operation is very easy, fast.

Concrete, the first extension rod 96 is fixed with the 3rd sleeve pipe the 110, three sleeve pipe 110 and is provided with external screw thread 111.Actuated piece 108 one end and the second counterpart 104 lean, and the extension of actuated piece 108 other end passes the 3rd sleeve pipe 110.Impeller 112 is located at the second extension rod 98 rotationally, impeller 112 comprises the link 114 be connected with the second extension rod 98, the open end 116 relative with link 114 and is connected the pars intermedia 118 of link 114 and open end 116, open end 116 and pars intermedia 118 all keep at a certain distance away with the second extension rod 98, and pars intermedia 118 is provided with internal thread 120.Like this, the 3rd sleeve pipe 110 can be inserted between impeller 112 and the second extension rod 98, simultaneously rotation forces part 112, thus together with the first extension rod 96 is connected with the second extension rod 98.

In addition, when the 3rd sleeve pipe 110 inserts in the process of impeller 112, impeller 112 can promote actuated piece 108 and move to the direction vertical with the first extension rod 96 bearing of trend, because actuated piece 108 one end and the second counterpart 104 lean, thus impel the second counterpart 104 relative to the second slide block 105 pivotable, finally make the second stopper section on the second lug boss on the second counterpart 104 and the second sliding part 106 connect, the first driving section 100 and the second driving section 102 are linked together.As shown in FIG. 10 and 11, now by operation operating parts 40, the first driving section 100 is pulled to move a certain distance H2 to drive the second slide block 105 to the direction near operating parts 40, because the second counterpart 104 and the second sliding part 106 connect mutually, thus drive the second driving section 102 to move relative to the second extension rod 98, and then drive unit 42 is driven to drive drum 32 unwrapping wire.

The open end 116 of impeller 112 is provided with angle 124, the end face internal diameter of angle 124 is greater than the internal diameter of pars intermedia 118, so make when the 3rd sleeve pipe 110 is with the mating process of impeller 112, actuated piece 108 easily enters impeller 112 and is pushed part 112 and promotes, thus actuated piece 108 is moved along the direction vertical with the first extension rod 96 bearing of trend.And move to the direction extending axis near the first extension rod 96.

Match connecto comprises the second holding device be located between the second counterpart 104 and the first extension rod 96 further, and the second holding device is used for impelling the second counterpart 104 and the second sliding part 106 to throw off.Second holding device is located between the second slide block 105 and the second counterpart 104, and the second holding device comprises Flexible element, and Flexible element comprises elastic component 126.Preferably, elastic component 126 is set to torsion spring 126.Certainly, elastic component 126 also can be set to other elastic-like parts such as extension spring, stage clip, rubber parts.

Second slide block 105 is provided with the second projection 127, and torsion spring 126 is sheathed on the second projection 127, and one end of torsion spring 126 is resisted against the second slide block 105, and the other end of torsion spring 126 is resisted against the second counterpart 104.So, when outward winding impeller 112 and the 3rd sleeve pipe 110 time, torsion spring 126 impels the second counterpart 104 pivotable, move to the direction extending axis away from the first extension rod 96 to promote actuated piece 108, final second counterpart 104 no longer includes the motive force of actuated piece 108, and the second counterpart 104 and the second sliding part 106 disengage, and then the first driving section 100 and the second driving section 102 are thrown off, now, the first extension rod 96 and the second extension rod 98 also disengage.So, substantially reduce the packaging of mower and deposit volume, facilitating and deposit and transport.

In the present embodiment, match connecto comprises equally for making the second slide block 105 drive the second counterpart 104 to the second tensioning apparatus of the direction movement away from operating parts 40 (see Fig. 2), and the second tensioning apparatus is located between the second counterpart 104 and the first extension rod 96.Further, the first extension rod 96 internal fixtion is provided with the second ring-type pedestal 128, and tensioning apparatus is located between the second ring-type pedestal 128 and the second slide block 105.

Second tensioning apparatus comprises flexible member, and flexible member comprises elastic component 129, and preferably, elastic component 129 is set to stage clip 129, and stage clip 129 is arranged along the lengthwise bearing of trend of the first extension rod 96.Certainly, above-mentioned elastic component 129 also can be set to the elastic-like parts such as extension spring, torsion spring, rubber parts.In addition, the effect of tensioning apparatus and concrete mounting means and the first embodiment similar, in this not go into detail.

As shown in Figure 11 to 13, the third embodiment of the present invention.In the present embodiment, the first extension rod 130 is scalable relative to the second extension rod 132, and driving member 133 identical movement is arranged at the inner chamber of the first extension rod 130 and the second extension rod 132.Certainly, the first extension rod 130 and the second extension rod 132 also can adopt other version outside flexible syndeton, as thrown off.

Arrange expansion regulating mechanism (not shown) between first extension rod 130 and the second extension rod 132, expansion regulating mechanism is for regulating the relative telescopic position between the first extension rod 130 and the second extension rod 132.As is known to the person skilled in the art, expansion regulating mechanism has much different implementations, is no longer described in detail at this.Moreover, also can setting position locking mechanism (not shown) between the first extension rod 130 and the second extension rod 132, after the first extension rod 130 and the second extension rod 132 are adjusted to suitable relative position, position locking mechanism locks it.Equally, position locking mechanism also has much different implementations, and in this not go into detail.

Manual payingoff mechanism also comprises the pulley assembly be located in extension rod assembly 15 (see Fig. 1), and driving member 133 is arranged at pulley assembly, and pulley assembly is controlled by operating parts 40 (see Fig. 2).Pull operation part 40, can make pulley assembly drive driving member 133 to move, thus drive drive unit 42 to drive drum to carry out unwrapping wire.

In the present embodiment, pulley assembly comprises the fixed pulley 134 being fixed at the first extension rod 130 and the movable pulley 136 be connected with operating parts 40, operation operating parts 40 can make movable pulley 136 move along the bearing of trend of the first extension rod to the direction near operating parts 40, movable pulley 136 than fixed pulley 134 closer to operating parts 40, driving member 133 is sheathed on fixed pulley 134 and movable pulley 136 outer rim, driving member 133 comprises the stiff end 140 being fixedly connected on the second extension rod 132 and the movable end 142 being connected to drive unit 42 (see Fig. 2), and stiff end 140 is between fixed pulley 134 and movable pulley 136.Certainly, pulley assembly, except only arranging a fixed pulley and a movable pulley, also can arrange other the pulley assembly form such as multiple fixed pulleys, as long as when the first extension rod 130 is movable relative to the second extension rod 132, can tighten up driving member 133 all the time.

When movable pulley 136 is in free state, flexible first extension rod 130 and the second extension rod 132, the distance between movable pulley 136 and fixed pulley 134 all keeps constant.

Describe in detail relative to the first extension rod 130 indentation for the second extension rod 132, as shown in figure 11, movable pulley 136 is in free state, and the second extension rod 132 is when being in extended position relative to the first extension rod 130, if movable pulley 136 axle center to fixed pulley 134 axle center is X along the distance on the first extension rod 130 lengthwise bearing of trend, stiff end 140 to fixed pulley 134 axle center is Y along the distance on the first extension rod 130 lengthwise bearing of trend, as shown in figure 12, second extension rod 132 is in retracted position relative to the first extension rod 130, second extension rod 132 moves relative to the fixed pulley 134 being fixed at the first extension rod 130 with stiff end 140, stiff end 140 to fixed pulley 134 axle center is Y+K along the distance on the first extension rod 130 lengthwise bearing of trend, that is stiff end 140 is K relative to fixed pulley 134 axle center along the displacement on the first extension rod 130 lengthwise bearing of trend, now the second extension rod 132 is relative to the first extension rod 130 indentation distance also non-K, thus make driving member 133 be in tensioning state all the time.Therefore, when transport with when depositing mower, the second extension rod 132 is relative to the first extension rod 130 indentation, and driving member 133 is in tensioning state all the time, conveniently deposits and transports.No matter the second extension rod 132 is in any indentation or extended position relative to the first extension rod 130, driving member 133 is all in tensioning state, more convenient to operate, when operator need not confirm use or deposit mower, where the second extension rod 132 should move to relative to the first extension rod 130.

The process that second extension rod 132 stretches relative to the first extension rod 130 is contrary with said process, namely the process of Figure 11 is stretched over from the retracted position of such as Figure 12, in this process, driving member 133 is still in tensioning state all the time, therefore, when pulling movable pulley 136, driving member 133 just can be made to drive drive unit 42 to drive drum 32 to discharge line 34 (see Fig. 2) of beating the grass, thus realize manual unwrapping wire.

Movable pulley 136 is connected to operating parts 40 (see Fig. 2), and movable pulley 136 is removable along the lengthwise bearing of trend of the first extension rod 130.When operation operating parts 40, movable pulley 136 just can move to the direction away from fixed pulley 134 along the lengthwise bearing of trend of the first extension rod 130, drive the movable end 142 of driving member 133 to move to the direction near the first extension rod 130, and the movable end 142 of driving member 133 move equally along the lengthwise bearing of trend of the first extension rod 130 simultaneously.Concrete, if movable pulley 136 is to the direction displacement L away from fixed pulley 134, the movable end 142 of driving member 133 just can be driven to the direction displacement 2L near the first extension rod 130.So, because movable end 142 is connected to drive unit 42 (see Fig. 1), driving member 133 just can drive drive unit 42 to drive drum 32 to discharge line 34 (see Fig. 1) of beating the grass, thus realizes manual unwrapping wire.

Preferably, the diameter of fixed pulley 134 is less than the diameter of movable pulley 136.So, greatly can reduce manual payingoff mechanism and take up room, make mower compact conformation.

One of outer rim tangent line between fixed pulley 134 and movable pulley 136 146 is parallel to the bearing of trend of the first extension rod 130.So, when no matter the second extension rod 132 stretches relative to the first extension rod 130, or when pulling movable pulley 136 pairs of mowers to carry out manual unwrapping wire, the transmission of driving member 133 is all more smooth and easy, laborsaving.

As shown in figure 12, manual payingoff mechanism also comprises the resetting means 148 be located between movable pulley 136 and the first extension rod 130, when inoperation movable pulley 136, distance between movable pulley 136 and fixed pulley 134 remains X, and now defining movable pulley 136 is initial position relative to the position residing for fixed pulley 134.With further reference to Figure 13, when operation movable pulley 136 makes it along the lengthwise bearing of trend of the first extension rod 130, and to the direction displacement L away from fixed pulley 134, distance now between movable pulley 136 and fixed pulley 134 be X+L now movable pulley 136 be in unwrapping wire position, then discharge movable pulley 136, movable pulley 136 resets to initial position as shown in figure 12 under the effect of resetting means 148.So, can repeatedly discharge to the drum 32 of mower line 34 (see Fig. 2) of beating the grass.

Further, the first extension rod 130 is provided with moving pulley bracket 150 movably, and movable pulley 136 is located on moving pulley bracket 150, and the first extension rod 130 is installed with limiting section 152.When movable pulley 136 is in free state, resetting means 148 makes movable pulley 136 be returned to initial position.Now moving pulley bracket 150 one end and limiting section 152 connect, and moving pulley bracket 150 other end and resetting means 148 connect.And moving pulley bracket 150 is connected with operating parts 40, operation operating parts 40 like this, just drive movable pulley 136 to move to the direction away from limiting section 152 by moving pulley bracket 150, thus pull driving member 133 to drive drum 32 to discharge line 34 (see Fig. 2) of beating the grass to make drive unit 42.

In the present embodiment, moving pulley bracket 150 is connected with operating parts 40 by control piece 154.Preferably, control piece 154 is set to flexible piece.Certainly, also can be set to other forms such as inflexibility part, as long as energy transmitting force is to moving pulley bracket 150, moving pulley bracket 150 can be moved along the lengthwise bearing of trend of the first extension rod 130.

Resetting means 148 comprises elastic component 156.Preferably, elastic component 156 is set to stage clip 156, and stage clip 156 is arranged along the lengthwise bearing of trend of the first extension rod 130.Certainly, elastic component 156 also can be set to other elastic-like parts such as extension spring, torsion spring or rubber parts.

One end of stage clip 156 is resisted against the first extension rod 130, and the other end of stage clip 156 is resisted against moving pulley bracket 150.Further, be installed with mount pad 158 in the first extension rod 130, mount pad 158 has cavity 160 and butting section 162.Moving pulley bracket 150 is located in cavity 160 movably, and limiting section 152 is located at mount pad 158, and one end of stage clip 156 is resisted against butting section 162, and moving pulley bracket 150 is between stage clip 156 and limiting section 152.

In the present embodiment, no matter first extension rod 96 and the second extension rod 98 are at extended position or retracted position, all the time the state of connecting is in, and driving member 133 is in tensioning state all the time, and indirectly connect with operating parts 40, and with drive unit 42 (see Fig. 2), therefore when using mower, the second extension rod 98 can be made to be in extended position relative to the first extension rod 96, now can operate operating parts 40 to move to the direction near operating parts 40 relative to the second extension rod 98 to make the movable end 142 of driving member, thus drive drive unit 42 to drive drum 32 to discharge line 34 (see Fig. 2) of beating the grass, and when the second extension rod 98 is in retracted position relative to the first extension rod 96, greatly reduce parking space and the packaging volume of mower.Therefore, this mower not only can reduce line loss consumption of beating the grass, and packaging volume is less.

It may occur to persons skilled in the art that, the present invention can also have other implementation, as long as but its technical spirit adopted is identical with the present invention or close, or any change of making based on the present invention and replacing all within protection scope of the present invention.

Claims (36)

1. a mower, comprise extension rod assembly, be located at the moving head of described extension rod assembly one end, to be located on described extension rod assembly and to keep at a certain distance away the handle arranged with described moving head, drive the motor that described moving head rotates around rotation, control the switch of described motor, described moving head comprises the drum for arranging line of beating the grass, described mower also comprises manual payingoff mechanism, described manual payingoff mechanism comprises the operating parts independent of described switch, the driving member controlled by described operating parts, by described driving member drive with drive described drum discharge described in beat the grass the drive unit of line, it is characterized in that: described extension rod assembly comprises the first extension rod that lengthwise extends and the second extension rod being movably connected on described first extension rod, described first extension rod is located at by described handle, described moving head is located at described second extension rod, described first and second extension rods are equipped with inner chamber, described driving member basic setup is in the inner chamber of described first and second extension rods.

2. mower according to claim 1, is characterized in that: described first and second extension rods have the primary importance mutually connected and the second place of mutually throwing off.

3. mower according to claim 2, is characterized in that: adopt between described first and second extension rods and be threaded.

4. mower according to claim 2, is characterized in that: described first extension rod is provided with electrode slice, and described second extension rod is provided with electric wire, and when described first extension rod and the second extension rod connect, described electrode slice is electrically connected with described electric wire.

5. mower according to claim 2, it is characterized in that: described driving member comprises the first driving section be connected with described operating parts and the second driving section arranged relative to described first driving section activity, and described second driving section is connected with described drive unit.

6. mower according to claim 5, it is characterized in that: when described first extension rod and the second extension rod connect mutually, described first driving section and the second driving section connect mutually, when described first extension rod and the second extension rod are thrown off mutually, described first driving section and the second driving section are thrown off mutually.

7. mower according to claim 5, it is characterized in that: described manual payingoff mechanism also comprises the match connecto be located between described first driving section and the second driving section, described match connecto comprises to be located in described first extension rod and the counterpart be connected with described first driving section, to be located in described second extension rod and the sliding part be connected with described second driving section, described sliding part can connect with described counterpart or throw off.

8. mower according to claim 7, it is characterized in that: described match connecto also comprises the actuating device be located at described first extension rod and connected for impelling described counterpart and sliding part, thus described first driving section and the second driving section are linked together, operate described operating parts, by described first driving section, drive described second driving section to move to the direction near described operating parts, drive described drum to discharge line of beating the grass to drive described drive unit.

9. mower according to claim 8, it is characterized in that: described actuating device comprises the ring-type pedestal be fixed in described first extension rod, described ring-type pedestal comprises the Part II that Part I and internal diameter are less than described Part I, described counterpart can be moved to the second place to the direction near described operating parts from primary importance by the bearing of trend operatively along described first extension rod, during primary importance, described counterpart and described sliding part are thrown off, during the second place, described Part II impels described counterpart and described sliding part to connect.

10. mower according to claim 9, is characterized in that: described match connecto also comprises the first elastic component be located at for impelling described counterpart and sliding part to throw off between described counterpart and described first extension rod.

11. mowers according to claim 10, it is characterized in that: described match connecto also comprises the slide block being located at described ring-type pedestal movably, described first driving section is connected to described slide block, described counterpart pivotable is arranged at described slide block, and described first elastic component is located between described counterpart and described slide block.

12. mowers according to claim 11, is characterized in that: described match connecto also comprises to be located between described slide block and described ring-type pedestal for impelling described slide block to the tensioning apparatus of the direction movement away from described operating parts.

13. mowers according to claim 12, is characterized in that: described tensioning apparatus comprises the second elastic component be located between described ring-type pedestal and slide block.

14. mowers according to claim 8, it is characterized in that: described actuating device comprises activity and is located at described first extension rod and the actuated piece abutted against with described counterpart and the impeller being located at described second extension rod, when described first extension rod and the second extension rod connect, described impeller promotes the motion of described actuated piece, and described actuated piece impels described counterpart and described sliding part to connect.

15. mowers according to claim 14, is characterized in that: described actuated piece is connected with described first extension rod, and the first extension rod and the second extension rod are connected mutually.

16. mowers according to claim 14, is characterized in that: described actuated piece moves and is coupled to described first extension rod.

17. mowers according to claim 14, is characterized in that: the moving direction of described actuated piece is perpendicular to the bearing of trend of described first extension rod.

18. mowers according to claim 7, is characterized in that: described match connecto also comprises the holding device be located at for impelling described counterpart and sliding part to throw off between described counterpart and described first extension rod.

19. mowers according to claim 18, is characterized in that: described holding device comprises Flexible element.

20. mowers according to claim 19, is characterized in that: described Flexible element is torsion spring.

21. mowers according to claim 7, is characterized in that: described match connecto also comprises to be located between described counterpart and described first extension rod for impelling described counterpart to the tensioning apparatus of the direction movement away from described operating parts.

22. mowers according to claim 21, is characterized in that: described tensioning apparatus comprises flexible member.

23. mowers according to claim 22, is characterized in that: described flexible member is set to the first stage clip, and described first stage clip is arranged along the lengthwise bearing of trend of described first extension rod.

24. mowers according to claim 7, is characterized in that: described counterpart can pivotable relative to described first extension rod.

25. mowers according to claim 1, is characterized in that: described first extension rod is scalable relative to the second extension rod.

26. mowers according to claim 1, is characterized in that: described manual payingoff mechanism also comprises the pulley assembly be located in described extension rod assembly, and described driving member is arranged at described pulley assembly.

27. mowers according to claim 26, it is characterized in that: described pulley assembly comprises the fixed pulley that is fixed at described first extension rod and to be connected with described operating parts and can by operatively along the movable pulley of the bearing of trend movement of described first extension rod, described movable pulley than fixed pulley closer to described operating parts, described driving member is sheathed on described fixed pulley and described movable pulley outer rim, described driving member comprises the stiff end being fixedly connected on described second extension rod and the movable end being connected to described drive unit, and described stiff end is between described fixed pulley and movable pulley.

28. mowers according to claim 27, is characterized in that: the diameter of described fixed pulley is less than the diameter of described movable pulley.

29. mowers according to claim 27, is characterized in that: one of outer rim tangent line between described fixed pulley and movable pulley is parallel to the bearing of trend of described first extension rod.

30. mowers according to claim 27, is characterized in that: described manual payingoff mechanism also comprises the resetting means be located at for making described movable pulley reset between described movable pulley and described first extension rod.

31. mowers according to claim 30, is characterized in that: described resetting means comprises the second stage clip.

32. mowers according to claim 1, is characterized in that: described driving member is flexible drive axle.

The using method of 33. 1 kinds of mowers, it is characterized in that: described mower comprises the first extension rod that lengthwise extends and the second extension rod being movably connected on described first extension rod, be located at the handle of described first extension rod, be located at the moving head of described second extension rod away from first extension rod one end, drive the motor that described moving head rotates around rotation, control the switch of described motor, described moving head comprises the drum for arranging line of beating the grass, described mower also comprises manual payingoff mechanism, described manual payingoff mechanism comprises the operating parts independent of described switch, controlled by described operating parts and be located at the driving member of described first and second extension rod inner chambers, by described driving member drive with drive described drum discharge described in beat the grass the drive unit of line, described using method comprises the steps: described first extension rod and the second extension rod to connect, operate described operating parts, described driving member drive described drive unit drive described drum discharge described in beat the grass line.

The using method of 34. mowers according to claim 33, it is characterized in that: the second driving section that described driving member comprises the first driving section and is flexibly connected with described first driving section, after described using method comprises the steps: described first extension rod and the second extension rod to connect further, operate described operating parts again to pull described first driving section, described first driving section and the second driving section are linked together.

The using method of 35. mowers according to claim 33, it is characterized in that: the second driving section that described driving member comprises the first driving section and is flexibly connected with described first driving section, after described using method comprises the steps: described first extension rod and the second extension rod to connect further, described first driving section and the second driving section link together.

The using method of 36. mowers according to claim 33, it is characterized in that: described first extension rod is provided with electrode slice, described second extension rod is provided with electric wire, and when described first extension rod and the second extension rod connect, described electrode slice is electrically connected with described electric wire.