WO2015172744A1

WO2015172744A1 - Grass cutting machine and pay-off method for grass cutting machine

Info

Publication number: WO2015172744A1
Application number: PCT/CN2015/079128
Authority: WO
Inventors: 马一纯; 张士松; 牟国良; 钟红风; 刘芳世; 庞晓丽; 贝克⋅罗伯特; 马丁⋅布兰登
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2014-05-16
Filing date: 2015-05-16
Publication date: 2015-11-19

Abstract

A grass cutting machine comprises an extension rod (20), a housing (25), a grass cutting head (22), handles (23, 24), a main motor (26), and a main switch (27). The grass cutting head (22) comprises an accommodating seat (28), a cover (30), and a wire coil (32). The wire coil (32) has a first state that is static relative to the accommodating seat (28). The grass cutting machine further comprises a pay-off mechanism. The pay-off mechanism comprises a pay-off electronic switch (40) independent of the main switch (27), and a control device. The pay-off electronic switch (40) electrically controls in an operable manner the control device to make the wire coil (32) in a second state with a rotation speed difference relative to the accommodating seat (28). An operator can carry out pay-off operation whenever required without interrupting the work of the grass cutting machine, and the pay-off operation is simple and convenient.

Description

Method for laying grass and lawn mower

Technical field

The invention relates to a garden tool, in particular to a grass cutter.

Background technique

Green vegetation is an essential environmental element for our human beings, and the awareness of greening is becoming more and more popular. Whether it is a golf course, a football field, a manor, a villa's courtyard, or an ordinary residential community, green turf is everywhere, bringing vitality and vitality to people's lives. But if you leave people's care, these turf will become ups and downs and chaos.

As a gardening tool for turf, the lawn mower is being favored by more and more users. The lawnmower generally drives the grass by rotating the grass, usually including an extension rod extending longitudinally, a grass head provided at one end of the extension rod, a handle disposed on the extension rod and spaced apart from the grass head. And driving the grass for rotating the grass head, the grass head comprises a receiving seat, a cover matched with the receiving seat, a wire disc disposed between the receiving seat and the cover, and the grassing wire is wound on the wire tray and protrudes from the receiving seat. When working, the grass head is driven to rotate to drive the grass line to rotate synchronously to fight grass.

The lawnmower usually has two states of use, one of which is a conventional grassing state. At this time, the plane formed by the rotation of the grass line is parallel to the ground plane, and is used for quickly handling the large lawn; Another use state is the trimming state. At this time, the plane formed by the rotation of the grass line is perpendicular to the ground plane, and is used to take care of the lawn at the edge of the road.

Because the grass line rotates and grass is hit, the end of the grass line is very easy to wear, and the worn grass line does not reach the required grassing radius, and the grassing efficiency is greatly reduced. To this end, a wire-removing mechanism is required on the lawn mower to adjust the length of the grass-line extending from the receptacle at an appropriate time.

There are two kinds of normal pay-off mechanisms, one is the automatic pay-off mechanism of the switch machine. As the name suggests, the switch-off mechanism will automatically release the line every time it is turned on and off, no additional operation is required, but it is because of each time. Both the power on and off will be put on the line, and the loss of the grass line is more serious. The other is a tapping and paying mechanism. The tapping and paying mechanism has a triggering member protruding from the cover. When the cover is used, the cover is struck on the ground to trigger the triggering of the triggering device. The main disadvantage is that the trimming operation is performed on the lawnmower. At that time, it is necessary to reverse the lawn mower so that the lid can strike the ground to release the line, not only to interrupt the trimming and grassing work but also to be cumbersome to operate.

In another pay-off mechanism, an operating member independent of the main switch is disposed in the grip portion, and the movement of the operating member is transmitted to the reel through the transmission connecting member, so that the speed difference between the reel and the receiving seat is released. However, this manual pay-off mechanism requires a transmission member that extends substantially through the longitudinally extending extension rod to be able to handle the hand. The movement of the moving member is transmitted to the reel. Therefore, the telescopic type or the disassembled type is provided with respect to the extended extension rod, and the installation structure of the transmission member is complicated, and the reliability is not guaranteed.

Another type of pay-off mechanism includes an operating member for operation by an operator, a wire rope controlled by the operating member and movably disposed on the extension rod, and a driving device for driving the reel to release the grass line by the wire rope. The operator can realize the manual threading of the reel by operating the operating member, but in order to satisfy the operation comfort, the extension rod is usually made long, which greatly increases the packaging volume of the lawnmower, which is not only inconvenient to transport, but also improved. The cost of transportation.

Summary of the invention

In order to overcome the deficiencies of the prior art, the problem to be solved by the present invention is to provide a lawn mower that reduces the loss of grass lines and is easy to operate.

In order to solve the above problems, the technical solution of the present invention is: a lawnmower comprising a longitudinally extending extension rod, a casing disposed at one end of the extension rod, and being disposed on the extension rod and the casing a handle disposed at a distance, a grass head connected to the casing, a main motor that drives the grass head to rotate about an axis, and a main switch that controls the main motor, the grass head includes a receiving seat, and a cover that is mated by the receiving seat, a wire reel disposed between the receiving seat and the cover, the wire reel having a first state that is relatively stationary with the receiving seat, wherein the grass mower further includes a pay-off mechanism, the pay-off mechanism comprising a pay-off electronic switch independent of the main switch, and a control device, the pay-off electronic switch operatively electrically controlling the control device to enable the reel to be capable of receiving A second state of difference in rotational speed is generated between the seats.

Preferably, the operating speed of the main motor during operation is constant.

Preferably, the control device comprises an electric drive independent of the main motor, the pay-off mechanism comprising a transmission driven by an electric drive, the electric drive driving the reel in the first state and the Movement between the two states.

The electric drive includes a secondary motor that is independent of the main motor. The transmission device includes a motion conversion mechanism disposed between the secondary motor and the reel, and the motion conversion mechanism converts the rotational motion of the secondary motor into a rotational motion of the reel relative to the housing to generate a speed difference. The motion conversion mechanism includes a transmission member fixedly coupled to an output shaft of the secondary motor, a pivoting member driven by the transmission member, and an intermediate member driven by the pivoting member, the intermediate member driving the reel to move relative to the receiving seat .

Preferably, the transmission member is disposed to be fixedly coupled to the eccentric cam of the output shaft, and the pivoting member is disposed as a lever centered on the pivot axis, wherein the pivot shaft fixedly connects the first end of the lever to the casing, the lever The second end abuts the peripheral surface of the eccentric cam.

In another alternative, the transmission member is disposed to be fixedly coupled to the end surface cam of the output shaft, and the pivoting member is disposed as a lever centered on the pivot axis, wherein the pivot shaft fixedly connects the first end of the lever In the casing, the second end of the lever abuts against the cam surface of the end cam.

Further, an elastic member is disposed between the pivoting member and the casing.

Preferably, the transmission further includes a speed reduction mechanism disposed between the secondary motor and the transmission member. The speed reduction mechanism is provided as a planetary gear mechanism.

The control device also includes a stop device that controls the secondary motor to stop rotating. The stopping device includes a sensing unit, and a control unit that receives the signal of the sensing unit and stops the control of the secondary motor.

Preferably, the sensing element comprises a Hall sensor disposed on the casing, and a magnetic member disposed on the transmission, the Hall sensor being disposed adjacent to the magnetic member.

In one arrangement, the motor shaft of the secondary motor is disposed perpendicular to the motor shaft of the main motor.

Alternatively, the motor shaft of the secondary motor is arranged parallel to the motor shaft of the main motor.

Preferably, the electric drive comprises an electromagnet. The electromagnet has an output for linear motion, and the transmission includes a third drive train disposed between the output end and the spool.

Preferably, the third drive train includes a rotating member pivotally coupled to the casing, and a sliding member driven by the rotating member, the sliding member driving the reel to move relative to the receiving seat. The rotating member is disposed as a lever centered on the pivoting shaft, wherein the pivoting shaft is disposed at a middle portion of the lever, the first end of the lever is coupled to the output end, and the second end of the lever abuts the sliding member.

Preferably, the payoff electronic switch controls energization and de-energization of the electromagnet.

Alternatively, the control device includes a control circuit electrically coupled to the main motor for controlling the main motor to switch between a normal operating speed and a payout speed. The control circuit is a PWM modulation circuit.

Preferably, the payoff speed is less than the working speed.

Preferably, the control circuit is a brake switch circuit.

Alternatively, the payout speed is greater than the working speed.

Preferably, when the main switch is activated, the reel is in a first state, and when the pay-off electronic switch is activated, the reel is in a second state.

Preferably, a slider is disposed between the receiving seat and the wire reel, and the slider is fixedly coupled to the receiving seat in a radial direction, and the wire releasing mechanism further comprises an activity. a stopping device of the receiving seat, the stopping device has a first position and a second position, and when the stopping device is in the first position, The stopping device limits radial movement of the slider relative to the receiving seat, and the slider is radially movable relative to the receiving seat when the stopping device is in the second position.

Preferably, the stopping device comprises a stopping member pivoted on the receiving seat. In the first position, the stopping member stops the sliding block, and in the second position, the stopping member and the stopping member The slider is disengaged.

Preferably, when the pay-off electronic switch is activated, the stopper is pivoted from the first position to the second position relative to the receiving seat by the inertial force.

Preferably, when the payout electronic switch is released, the stop is pivoted from the second position to the first position.

Preferably, the stopping means comprises a resetting means provided between the stop and the receiving seat, the resetting means causing the stop to return from the second position to the first position.

Preferably, the pivot axis of the stop overlaps the axis of rotation of the receptacle.

Preferably, when the main switch is activated, the stopper is in a first position that restricts radial movement of the slider relative to the receiving seat.

Preferably, the reel is provided with a circumferentially extending toothed groove, and the toothed groove includes a first toothed edge and a second toothed edge which are oppositely disposed, the first toothed edge and the first The number of teeth on the second toothed edge is the same and circumferentially staggered, the tooth includes a radially extending radial face, and the slider is provided with protruding teeth that are radially movable within the toothed groove. When the protruding tooth abuts against the radial surface, the reel is in the first state; when the protruding tooth does not abut the radial surface, the reel is in the second state.

Preferably, the tooth comprises a circumferentially obliquely extending circumferential surface, and the wire reel is in the second state when the protruding tooth abuts the circumferential surface.

Preferably, a biasing member is disposed between the receiving seat and the slider, and the biasing member urges the slider to keep the protruding teeth abutting the radial surface.

Preferably, the reel moves circumferentially along the axis.

Alternatively, the spool moves axially along the axis.

Preferably, the main switch is electrically connected to the control device.

Preferably, the pay-off electronic switch is disposed adjacent to the grip or grip of the handle. The handle includes a main handle and an auxiliary handle disposed at a certain distance. The main switch is disposed on the main handle, and the pay-off electronic switch is disposed on the auxiliary handle.

Preferably, the pay-off electronic switch is a single-pole double-throw switch, and the single-pole double-throw switch is selectively in a first closed position and a second closed position, and the main switch is activated to rotate the reel and the receiving seat synchronously. At this time, the single-pole double-throw switch is in the first closed position; the single-pole double-throw switch is activated, and the single-pole double-throw switch is switched from the first closed position to the second closed position, so that a speed difference is generated between the coil and the receiving seat; The throwing switch returns the single-pole double-throw switch from the second closed position to the first closed position, so that a speed difference is generated between the reel and the receiving seat, and after the preset time, the reel and the receiving seat resume synchronous rotation.

The invention is also realized by a pay-off method of a grass-carrying machine, and the pay-off method comprises the following steps: starting the pay-off electronic switch to generate a speed difference between the wire reel and the receiving seat.

Preferably, the operating step further comprises releasing the payoff electronic switch.

Preferably, before starting the pay-off electronic switch, the main switch is activated to cause the main motor to drive the receiving seat to rotate synchronously with the reel.

Another method for releasing the line includes the following steps: starting the main switch to rotate the reel and the receiving seat synchronously; starting the electronic switch to make a speed difference between the reel and the receiving seat, after a preset time, the reel Resynchronous rotation with the housing.

In order to solve the above problems, another technical solution of the present invention is: a lawnmower comprising a longitudinally extending extension rod, a casing disposed at one end of the extension rod, and being disposed on the extension rod and a handle disposed at a distance from the casing, a grass head connected to the casing, a main motor that drives the grass head to rotate about an axis, and a main switch that controls the main motor, the grass head includes a receiving a seat, a cover that is coupled to the receiving seat, and a wire disc disposed between the receiving seat and the cover, the wire reel having a first state that is relatively stationary with the receiving seat, wherein the grass is The machine further includes a pay-off mechanism including a pay-off electronic switch independent of the main switch, and a control device, the pay-off electronic switch operatively electrically controlling the control device to enable the reel In a second state in which a rotational speed difference is generated between the housing and the housing, the running speed of the main motor during operation is constant.

Preferably, the operating speed of the main motor during operation is constant.

Preferably, the transmission member is disposed to be fixedly coupled to the eccentric cam of the output shaft, and the pivoting member is configured to A lever having a pivot axis as a center of rotation, wherein the pivot shaft fixedly connects the first end of the lever to the casing, and the second end of the lever abuts against a peripheral surface of the eccentric cam.

In order to solve the above problems, another technical solution of the present invention is: a lawnmower comprising a longitudinally extending extension rod, a casing disposed at one end of the extension rod, and being disposed on the extension rod and a handle disposed at a distance from the casing, a grass head connected to the casing, a main motor that drives the grass head to rotate about an axis, and a main switch that controls the main motor; the grass head includes a receiving body a seat, a cover coupled to the receiving seat, a reel disposed between the receiving seat and the cover, the reel having a first state relatively stationary with the receiving seat; the lawnmower Also included is a payout mechanism including a control switch and a control device, the control switch operatively electrically controlling the control device to cause the spool to be in a rotational speed difference between the receptacle and the receptacle Two states.

In one embodiment, the control device includes a control circuit electrically coupled to the main motor for controlling the main motor to transition between a normal operating speed and a payout speed.

In one embodiment, the control circuit is a PWM modulation circuit.

In one embodiment, the payoff speed is less than the operating speed.

In one embodiment, the control circuit is a brake switch circuit.

In one embodiment, the control switch is the main switch or a payoff electronic switch that is independent of the main switch.

In order to solve the above problems, another technical solution of the present invention is: a method for paying off a lawnmower, and the method for paying off includes the following steps: starting a control switch to generate a speed difference between the wire reel and the receiving seat.

In one embodiment, the operating step further includes releasing the control switch.

In one embodiment, before the control switch is activated, the main motor drives the housing to rotate synchronously with the reel.

In order to solve the above problems, another technical solution of the present invention is: a method for paying a grass-carrying machine, the method for releasing the wire includes the following steps: starting the main switch to rotate the wire disc and the receiving seat synchronously; and starting the control switch, A speed difference is generated between the reel and the accommodating seat. After the preset time, the reel and the accommodating seat resume synchronous rotation.

In order to solve the above problem, another technical solution of the present invention is: a method for paying off a lawnmower, the control switch is a pay-off electronic switch independent of the main switch, and the pay-off electronic switch is a single knife The double throw switch, the single pole double throw switch is selectively in a first closed position and a second closed position, and the payoff method comprises the following steps: starting the main switch to rotate the reel and the receiving seat synchronously, and the single pole double throw The switch is in the first closed position; the discharge electronic switch is activated, and the single-pole double-throw switch is switched from the first closed position to the second closed position, so that a speed difference is generated between the wire reel and the receiving seat; the discharge electronic switch is released, and the single-knife is released The double throw switch returns from the second closed position to the first closed position, and the reel and the receiving seat resume to rotate synchronously.

In order to solve the above problem, another technical solution of the present invention is: a method for paying a lawnmower, the control switch is a main switch, the main switch is a single pole double throw switch, and the single pole double throw switch is selectable a first closed position and a second closed position, the pay-off method comprising the steps of: activating the main switch to rotate the reel synchronously with the receiving seat, wherein the main switch is in the first closed position; and the single-pole double-throw switch is from the first Closed position conversion value second closed position, causing a speed difference between the reel and the receiving seat; restarting the main switch, returning the single-pole double-throw switch from the second closed position to the first closed position, and the reel and the receiving seat are restored Rotate.

Compared with the prior art, the lawn mower of the present invention comprises a pay-off mechanism, and the pay-off mechanism is controlled by a pay-off electronic switch independent of the main switch, thereby avoiding waste of paying off each time the switch is turned off, thereby reducing grassing The loss of the wire; and the pay-off electronic switch is disposed in the vicinity of the grip portion or the grip portion of the handle, and the operator can control the pay-off electronic switch while holding the handle to release the line without interrupting the lawnmower. Work and easy to operate.

In order to overcome the deficiencies of the prior art, the first technical problem to be solved by the present invention is to provide a lawn mower that not only reduces the loss of the grass line but also has a small package volume.

In order to solve the above technical problem, the first technical solution of the present invention is:

A lawn mower comprising an extension rod assembly, a grass head disposed at one end of the extension rod assembly, a handle disposed on the extension rod assembly and spaced apart from the grass head, and driving the hit A motor that rotates around the axis of rotation controls the switch of the motor. The grass head includes a wire reel for setting a grassing line, the grass mower further includes a manual pay-off mechanism, and the manual pay-off mechanism includes an operation member independent of the switch, and is controlled by the operation member a transmission member, a driving device driven by the transmission member to drive the reel to release the grassing line, the extension rod assembly comprising a longitudinally extending first extension rod and a movable connection to the first extension rod a second extension rod, the handle is disposed on the first extension rod, the grass head is disposed on the second extension rod, and the first and second extension rods are each provided with an inner cavity, the transmission The pieces are disposed substantially in the inner cavity of the first and second extension rods.

Compared with the prior art, the lawn mower of the present invention comprises a manual pay-off mechanism, and the manual pay-off mechanism is controlled by an operation member independent of the switch setting, thereby avoiding waste of paying off each time the switch machine is off, thereby reducing grass clipping. The loss of the wire; and the extension rod assembly is configured as a first and a second extension rod that are movably coupled to each other to cause relative movement between the first and second extension rods when transporting or storing the lawnmower, thereby greatly reducing the amount of movement The packaging volume of the grass machine.

Preferably, the first and second extension rods have a first position that is mated with each other and a second position that is disengaged from each other.

Preferably, a threaded connection is adopted between the first and second extension rods.

Preferably, the first extension rod is provided with an electrode piece, and the second extension rod is provided with an electric wire, and the electrode piece is electrically connected to the electric wire when the first extension rod is mated with the second extension rod.

Preferably, the transmission member includes a first transmission portion coupled to the operating member and a second transmission portion movably disposed relative to the first transmission portion, the second transmission portion being coupled to the driving device.

Preferably, when the first extension rod and the second extension rod are mated with each other, the first transmission portion and the second transmission portion are coupled to each other, and when the first extension rod and the second extension rod are disengaged from each other, The first transmission The portion and the second transmission portion are disengaged from each other.

Preferably, the manual pay-off mechanism further includes a mating device disposed between the first transmission portion and the second transmission portion, the mating device including the first extension rod and the a connector connected to the first transmission portion, a sliding member disposed in the second extension rod and connected to the second transmission portion, the sliding member being engageable or disengageable from the adapter member.

Preferably, the mating device further includes an actuating device disposed on the first extension rod for engaging the mating member with the sliding member, thereby connecting the first transmission portion and the second transmission portion Together, the operating member is operated to drive the second transmission portion to move toward the operating member through the first transmission portion to drive the driving device to drive the reel to release the grassing line.

Preferably, the actuating device comprises an annular seat fixedly disposed in the first extension rod, the annular seat body comprising a first portion and a second portion having an inner diameter smaller than the first portion, the mating The member is operatively movable from a first position to a second position in a direction of extending the first extension rod toward the operating member, the adapter being disengaged from the slider when in the first position The second portion urges the mating member to mate with the slider.

Preferably, the mating device further includes a first elastic member disposed between the adapter and the first extension rod for causing the adapter to be disengaged from the slider.

Preferably, the mating device further includes a slider movably disposed on the annular seat body, the first transmission portion is coupled to the slider, and the adapter member is pivotally disposed on the slider Block, the first elastic member is disposed between the adapter and the slider.

Preferably, the mating device further comprises a tensioning device disposed between the slider and the annular seat for urging the slider to move away from the operating member.

Preferably, the tensioning device comprises a second elastic member disposed between the annular seat and the slider.

Preferably, the actuating device comprises an actuating member movably disposed on the first extending rod and abutting the mating member, and a pushing member disposed on the second extending rod, the first extending rod The pusher urges the actuating member to move when mated with the second extension rod, the actuating member causing the mating member to mate with the slider.

Preferably, the actuating member is coupled to the first extension rod and the first extension rod and the second extension rod are mated to each other.

Preferably, the actuating member is movably coupled to the first extension rod.

Preferably, the moving direction of the actuating member is perpendicular to the extending direction of the first extension rod.

Preferably, the mating device further comprises a gap between the adapter and the first extension rod for A retaining device that urges the adapter to disengage from the slider.

Preferably, the retaining device comprises an elastic unit.

Preferably, the elastic unit is a torsion spring.

Preferably, the mating device further comprises a tensioning device disposed between the adapter and the first extension rod for causing the adapter to move away from the operating member.

Preferably, the tensioning device comprises a resilient element.

Preferably, the elastic element is provided as a compression spring, and the compression spring is arranged along a longitudinal extension direction of the first extension rod.

Preferably, the adapter is pivotable relative to the first extension rod.

Preferably, the first extension rod is telescopic with respect to the second extension rod.

Preferably, the manual pay-off mechanism further includes a pulley assembly disposed in the extension rod assembly, and the transmission member is disposed on the pulley assembly.

Preferably, the pulley assembly includes a fixed pulley fixed to the first extension rod and a movable pulley connected to the operation member and operatively movable along an extending direction of the first extension rod, the movable pulley Closer to the operating member than the fixed pulley, the transmission member is sleeved on the outer edge of the fixed pulley and the movable pulley, the transmission member includes a fixed end fixedly coupled to the second extension rod and connected to the The movable end of the driving device, and the fixed end is located between the fixed pulley and the movable pulley.

Preferably, the diameter of the fixed pulley is smaller than the diameter of the movable pulley.

Preferably, one of the tangents of the outer edge between the fixed pulley and the movable pulley is parallel to the extending direction of the first extension rod.

Preferably, the manual pay-off mechanism further includes a reset device disposed between the movable pulley and the first extension rod for resetting the movable pulley.

Preferably, the resetting device comprises a second compression spring.

Preferably, the transmission member is a flexible transmission shaft.

A second technical problem to be solved by the present invention is to provide a simple and convenient method of using a lawnmower.

In order to solve the above technical problem, the second technical solution of the present invention is:

A method of using a lawnmower, comprising: a longitudinally extending first extension rod and a second extension rod movably coupled to the first extension rod, a handle disposed on the first extension rod, a grass head disposed at an end of the second extension rod away from the first extension rod, a motor driving the grass head to rotate about the rotation axis, and a switch for controlling the motor, the grass head including a grass for setting Line reel, said hit The grass machine further includes a manual pay-off mechanism, the manual pay-off mechanism comprising an operating member independent of the switch, a transmission member controlled by the operating member and disposed in the inner cavity of the first and second extension rods, The driving member drives the driving device for driving the wire reel to release the grassing line, and the using method comprises the steps of: fitting the first extension rod and the second extension rod to operate the operation member, The transmission member drives the driving device to drive the wire reel to release the grassing line.

Compared with the prior art, the lawnmower of the present invention can operate the operating member by fitting the first extension rod and the second extension rod, so that the transmission member drives the driving device to drive the reel to release the grassing line. Therefore, the operation is very simple and convenient.

Preferably, the transmission member includes a first transmission portion and a second transmission portion movably coupled to the first transmission portion, the method of use further comprising the steps of: arranging the first extension rod and the second extension rod After that, the operating member is operated to pull the first transmission portion to connect the first transmission portion and the second transmission portion together.

Preferably, the transmission member includes a first transmission portion and a second transmission portion movably coupled to the first transmission portion, the method of use further comprising the steps of: arranging the first extension rod and the second extension rod After that, the first transmission portion and the second transmission portion are coupled together.

DRAWINGS

The invention will now be further described with reference to the drawings and embodiments.

1 is a schematic cross-sectional view of a whole machine of a lawnmower according to a first embodiment of the present invention.

Figure 2 is an enlarged cross-sectional view of the head of the lawnmower shown in Figure 1, in which the lever is in the rest position.

Figure 3 is an enlarged cross-sectional view of the head of the lawnmower shown in Figure 1, at which time the lever drives the spool to move.

Fig. 4 is a perspective exploded view showing the thread take-up mechanism of the head of the lawnmower shown in Fig. 1.

5 to FIG. 9 are schematic diagrams showing the state change process of the slider and the reel in the process of controlling the pay-off of the pay-off mechanism shown in FIG.

Figure 10 is an enlarged schematic view showing the relative position of the Hall element in the head of the lawnmower and the magnetic member on the transmission member along the line A-A of Figure 2, in which case the Hall element is adjacent to the magnetic member.

Figure 11 is an enlarged schematic view showing the relative position of the Hall element in the head of the lawnmower and the magnetic member on the transmission member along the line B-B of Figure 3, in which case the Hall element is offset from the magnetic member by 180 degrees.

FIG. 12 is a schematic flow chart of the take-up mechanism of FIG. 1 controlling the wire take-up line.

Figure 13 is an enlarged cross-sectional view showing the head of the lawnmower according to the second embodiment of the present invention.

Figure 14 is an enlarged cross-sectional view showing the head of the lawnmower of the third embodiment of the present invention.

Figure 15 is a view showing the mating relationship between the lever and the slider shown in section C-C of Figure 14;

16 to FIG. 20 are schematic diagrams showing a state change process of the reel and the receiving seat and the cover during the process of controlling the pay-off of the pay-off mechanism shown in FIG. 14;

21 to 23 are views showing the operation of the control circuit of the lawnmower according to the fourth and fifth embodiments of the present invention.

Fig. 24 is a view showing the change of the rotational speed of the main motor of the lawnmower according to the fourth embodiment of the present invention.

Figure 25 is a view showing the change of the rotational speed of the main motor of the lawnmower according to the fifth embodiment of the present invention.

Figure 26 is a flow chart showing the operation of the lawnliner's take-up control in the fourth and fifth embodiments of the present invention.

27 to 29 are views showing the operation of the control circuit of the lawnmower according to the sixth embodiment of the present invention.

Fig. 30 is a view showing the change of the rotational speed of the main motor of the lawnmower according to the sixth embodiment of the present invention.

Figure 31 is an enlarged cross-sectional view showing the head of a lawnmower according to a seventh embodiment of the present invention.

Fig. 32 is a perspective exploded view showing the thread take-up mechanism of the head of the lawnmower shown in Fig. 31;

33 to FIG. 35 are schematic diagrams showing the state change process of the slider and the stopper device during the process of controlling the payout of the pay-off mechanism shown in FIG.

Figure 36 is a perspective exploded view showing the thread take-up mechanism in the head of the lawnmower according to the eighth embodiment of the present invention.

37 to 39 are schematic views showing the state change process of the slider and the stopper device during the process of controlling the pay-off of the lawn-lifting mechanism of the lawnmower shown in FIG.

40 to 41 are schematic views showing the operation of a control circuit of a lawn mower according to a ninth embodiment of the present invention;

Figure 42 is a view showing the change of the rotational speed of the main motor of the lawnmower according to the ninth embodiment of the present invention.

Figure 43 is a perspective view of the lawnmower of the tenth embodiment of the present invention with the one side of the grass head removed;

Figure 44 is a cross-sectional view showing the whole machine of the lawnmower according to the tenth embodiment of the present invention;

Figure 45 is an enlarged schematic view showing the joint of the first and second extension rods of the lawnmower shown in Figure 44, wherein the first extension rod and the second extension rod are disengaged, and the first transmission portion and the second transmission portion are disengaged;

Figure 46 is an enlarged schematic view showing the joint of the first and second extension rods of the lawnmower shown in Figure 44. At this time, the first extension rod cooperates with the second extension rod, and the first transmission portion is in a non-pull free state, first The transmission portion is disconnected from the second transmission portion;

Figure 47 is an enlarged schematic view showing the joint of the first and second extension rods of the lawnmower shown in Figure 44, in which the first extension rod cooperates with the second extension rod, the first transmission portion is in the pulled state, and the second transmission portion No motion is generated, and the first transmission portion is mated with the second transmission portion;

Figure 48 is an enlarged schematic view showing the connection of the first and second extension rods of the lawnmower shown in Figure 44. The first extension rod cooperates with the second extension rod, the first transmission portion is coupled with the second transmission portion, the first transmission portion is in the pulled state, and the second transmission portion is moved relative to the second extension rod by a certain distance to perform the payout ;

Figure 49 is an enlarged cross-sectional view showing the joint of the first and second extension rods of the lawnmower according to the eleventh embodiment of the present invention, in which the first extension rod and the second extension rod are disengaged, the first transmission portion and the second transmission portion Disengage

Figure 50 is an enlarged cross-sectional view showing the joint of the first and second extension rods of the lawnmower according to the eleventh embodiment of the present invention. At this time, the first extension rod cooperates with the second extension rod portion, and the actuator is not pushed. a transmission portion is disconnected from the second transmission portion;

Figure 51 is an enlarged cross-sectional view showing the joint of the first and second extension rods of the lawnmower according to the eleventh embodiment of the present invention, in which the first extension rod and the second extension rod are completely mated, and the actuator is pushed, a transmission portion is coupled to the second transmission portion, and the first transmission portion is in a non-pull free state;

Figure 52 is an enlarged cross-sectional view showing the joint of the first and second extension rods of the lawnmower according to the eleventh embodiment of the present invention, in which the first extension rod and the second extension rod are completely mated, the first transmission portion and the second portion The transmission portion is mated, the first transmission portion is in a pulled state, and the second transmission portion is moved a certain distance relative to the second extension rod to perform a payout;

Figure 53 is an enlarged cross-sectional view showing the junction of the first and second extension rods of the lawnmower according to the twelfth embodiment of the present invention, wherein the second extension rod is in an extended position with respect to the first extension rod, and the movable pulley is in a free state;

Figure 54 is an enlarged cross-sectional view showing the junction of the first and second extension rods of the lawnmower according to the twelfth embodiment of the present invention, wherein the second extension rod is in a retracted position with respect to the first extension rod, and the movable pulley is in a free state;

Figure 55 is an enlarged cross-sectional view showing the junction of the first and second extension rods of the lawnmower according to the twelfth embodiment of the present invention, wherein the second extension rod is in a retracted position relative to the first extension rod, and the movable pulley is in a pulled state. The transmission member is driven to move a certain distance relative to the second extension rod to perform the payout.

among them,

100 lawn mower 26 main motor 34 grass line

20 extension rod 27 main switch 34a free end

22 grass head 28 housing seat 35 strip hole

23 main handle 30 cover 36 rotating shaft

24 auxiliary handle 32 reel 37 toothed groove

25 Case 33 Slider 38 Battery pack

39 First toothed edge 60 Eccentric cam 150 Pivot shaft

40 pay-off electronic switch 60' end cam 154 biasing member

41 second toothed edge 61 elastic element 174 slide

42 lever 63 first tooth 176 bearing

44 Lever first end 65 Second tooth 178 Limiter

45 radial face 66 planetary gear mechanism 180 first limit surface

46 lever second end 67 third tooth 182 second limit surface

47 circumferential faces 68 Hall sensors 184 bumps

48 lever middle arm 69 fourth tooth 186 stop

49 protruding teeth 70 electromagnet 190 protrusion

50 pivot shaft 70a output 192 stop

52 elastic parts 72 magnetic parts 200 lawn mower

53 first slope 74 middleware 300 lawnmower

54 biasing member 74a center hole 400 lawnmower

55 second slope 75 through hole 401 stop device

56 times motor 78 limiter 403 stop

56a Motor shaft 142 Lever 405 Reset device

57 rolling friction parts 144 first end of the lever

58 output shaft 146 second end of lever

1015, extension rod assembly 1064, first end 1116, open end

1022, grass head 1066, second end 1118, middle part

1023, main handle 1068, first raised portion 1120, internal thread

1024, auxiliary handle 1070, first stop 1124, oblique

1026, motor 1072, first annular seat 1126, elastic member

1027, switch 1074, first part 1127, second stud

1028, receiving seat 1076, second part 1128, second annular seat

1030, cover 1080, first elastic member 1129, elastic member

1032, reel 1082, first slider 1130, first extension rod

1034, grass line 1084, stud 1132, second extension rod

1036, rotating shaft 1086, first mating part 1133, transmission parts

1038, battery pack 1088, second mating part 1134, fixed pulley

1040, operating member 1090, second elastic member 1136, movable pulley

1041, transmission member 1092, inner cavity 1140, fixed end

1042, drive unit 1094, limit unit 1142, active end

1043, lever 1096, first extension rod 1146, outer edge tangent

1046, first extension rod 1098, second extension rod 1148, resetting device

1047, electrode sheet 1100, first transmission portion 150, movable pulley bracket

1048, second extension rod 1102, second transmission portion 152, limiting portion

1049, wire 1104, second adapter 154, control

1050, external thread 1105, second slider 156, elastic member

1052, internal thread 1106, second slide 158, mount

1054, first sleeve 1108, actuating member 160, cavity

1056, second sleeve 1110, third sleeve 162, abutting portion

1057, first transmission portion 1111, external thread 200, lawn mower

1058, the second transmission portion 1112, the pushing member

1060, first adapter 1114, connection end

1062, the first sliding member

detailed description

1 to 12 show a lawnmower 100 according to a first embodiment of the present invention.

Referring to FIG. 1 , the lawn mower 100 of the present embodiment includes an extension rod 20 extending longitudinally and a head disposed at one end of the extension rod 20 . The head includes a casing 25 , a main motor 26 disposed in the casing 25 , And a grass head 22 driven by the main motor 26 to rotate about an axis; the grass cutter 100 further includes a handle disposed on the extension rod 20 and spaced apart from the casing 25, and a main switch 27 for controlling the main motor. The grass head 22 includes a receiving seat 28, a cover 30 that is coupled to the receiving seat 28, and a reel 32 that is disposed in the inner cavity formed by the receiving seat 28 and the cover 30. The spool 32 has a first state that is relatively stationary with the receptacle 28. When the main switch 27 controls the rotation of the main motor 26, the reel 32 rotates in synchronization with the housing 28 in the first state.

When the grass cutter 100 is in operation, the grass line 34 is wound on the wire tray 32 and protrudes from the container holder 28. When the grass head 22 is driven to rotate by the main motor 26, the grass line 34 extends out of the receiving seat 28 and the cover 30. The free end 34a of the lumen is rotated to form a cutting face. The user lifts the lawnmower 100 through the handle to grass the cutting surface formed by the grassing line 34 along its rotation. The lawnmower 100 can be switched between a grassing state in which the free end 34a of the grass line 34 is horizontally rotated and a trimming state in the vertical rotation to meet different cutting use requirements.

For the convenience of description, the "axial", "circumferential" and other orientation-related descriptions of this specification are Reference is made to the axis of rotation of the grass head 22. For example, "axial direction" is an extending direction along the rotation axis of the grass head 22; "circumferential direction" is a direction around the rotation axis of the grass head 22.

In this embodiment, the main motor 26 driving the grass head 22 is disposed coaxially with the grass head 22. Preferably, the output shaft of the main motor 26 directly drives the grass head 22, that is, the rotating shaft 36 of the grass head 22 is The motor shaft of the main motor 26 is an output shaft, and the structure is simple and compact. It will be appreciated by those skilled in the art that the main motor 26 can be disposed anywhere else of the extension rod 20 and that the grass head 22 can be rotated by a particular transmission mechanism.

In this embodiment, the end of the extension rod 20 away from the grass head 22 is provided with a power source, specifically a DC power source, and the DC power source is a battery pack 38, preferably a lithium battery pack. Thus, the DC power source and the grass head 22 are disposed at both ends of the extension rod 20, and the handle is disposed on the extension rod 20 at a position relatively close to the electric drive, so that the center of gravity of the entire lawnmower 100 is reasonable, and the operator lifts the handle through the handle. When the grass machine 100 works, it can be more labor-saving.

The lawnmower 100 further includes a pay-off mechanism, the pay-off mechanism includes a pay-off electronic switch 40 independent of the main switch 27, and a control device, and the pay-off electronic switch operatively electrically controls the control device to make the line The disk is in a second state in which a difference in rotational speed can be generated between the disk and the housing. In this embodiment, the rotation speed of the main motor is constant during operation; the control device includes an electric drive, and the pay-off mechanism includes a transmission driven by the electric drive, and the electric drive drives the reel in the first state and the second state through the transmission. Exercise between. Specifically, the electric drive is a secondary motor 56 disposed within the casing 25, and the secondary motor 56 is controlled to be activated by the payout electronic switch 40. When the main switch 40 controls the main motor 26 to rotate, the payout electronic switch 40 activates the secondary motor 56 to drive the reel 32 to move to a second state in which the rotational speed difference is generated from the receptacle 28. The payout electronic switch 40 is disposed adjacent to the grip or grip of the handle. In this embodiment, the secondary motor 56 is perpendicular to the main motor 26, that is, the motor shaft 56a of the secondary motor 56 is disposed perpendicular to the motor shaft 36 of the main motor 26, and the present embodiment vertically includes vertical relationships or the same in the same plane. The vertical relationship of the face.

Referring to FIGS. 2 and 3, in the first state, the reel 32 rotates synchronously with the receiving seat 28, and the grassing line 34 wound on the bobbin 32 rotates in synchronization with the receiving seat 28, and the grassing line 34 extends out of the receiving seat 28. Part of the rotation can be used to trim the lawn. In the second state, the reel 32 is disengaged from the receiving seat 28, and the centrifugal force of the rotation of the grassing line 34 causes the reel 32 to move relative to the receiving base 28, thereby generating a difference in rotational speed, and the centrifugal force of the grass 34 can pull the direction. A portion of the outer scooping is used to achieve the payout, i.e., the longer free end 34a of the mowing line 34 extends out of the receptacle 28, giving the lawnmower 100 a greater grassing radius.

The grip of the handle refers to the portion of the handle that the operator holds by hand. The pay-off electronic switch is disposed adjacent to the grip portion of the handle, and the pay-off electronic switch can be disposed on the handle or in other positions of the lawnmower. Referring to FIG. 1, in the embodiment, the handle includes a main handle 23 and an auxiliary handle 24 disposed at a distance, the main switch 27 is disposed on the main handle 23, and the pay-off electronic switch 40 is disposed on the auxiliary handle 24. With this arrangement, the operator can more easily lift and control the work of the lawn mower through the main handle 23 and the auxiliary handle 24.

In the present embodiment, the main switch 27 and the payout electronic switch 40 are respectively disposed on the main handle 23 and the auxiliary handle 24, and the operations of the main switch 27 and the payout electronic switch 40 do not interfere with each other. When the operator wants to perform the pay-off operation of the reel 32 when the mower 100 is controlled by the auxiliary handle 24, it is only necessary to control the pay-off electronic switch 40 on the auxiliary handle 24 without changing the grass. The working state of the machine 100 does not interrupt the grassing work of the lawnmower 100, and the operation is convenient. This advantage is more obvious when the lawnmower is in the trimming state.

Of course, the pay-off electronic switch 40 is disposed at other positions of the lawnmower, such as at a position close to the main handle or the auxiliary handle on the extension rod 20, or at a distance from the main switch on the main handle, as long as the operation is performed. The handle can be lifted by the handle to lift the grass and control the electronic switch. Any technical solutions similar to the present embodiment should be covered within the scope of the present invention.

Since the pay-off mechanism is controlled by the pay-off electronic switch independent of the main switch, the waste of the pay-off is avoided every time the switch is turned on and off, thereby reducing the loss of the grass line; and the pay-off electronic switch is adjacent to the grip of the handle Set or set on the grip of the handle, the operator can trigger the pay-off electronic switch while holding the handle to trigger the main switch, without interrupting the work of the lawnmower and facilitating the laying operation. Therefore, regardless of whether the main motor 26 is operated or not, the secondary motor 56 is driven to drive the reel 32 by controlling the payout electronic switch 40, so that the reel 32 and the holder 28 are relatively moved to generate a difference in rotational speed, and the payout can be realized.

With further reference to Figures 2 and 3, the secondary motor 56 is provided with an output shaft 58 that includes a first drive train disposed between the output shaft 58 and the spool 32. The first drive train is a motion conversion mechanism that converts the rotational motion of the secondary motor 56 into a rotational motion that produces a speed difference between the spool and the receptacle. The first drive train includes a transmission member that is fixedly coupled to the output shaft 58, a pivot member that is driven by the transmission member, and an intermediate member 74 that is driven by the pivot member.

In the present embodiment, the transmission member is disposed to be fixedly coupled to the eccentric cam 60 of the output shaft 58. The pivoting member is disposed as a lever 42 having a pivot axis 50 as a center of rotation, wherein the pivot shaft 50 fixes the first end 44 of the lever 42 Connected to the casing 25, the second end 46 of the lever abuts the cam peripheral surface of the eccentric cam 60. The elastic member 52 is disposed between the portion of the lever 42 adjacent to the second end 46 and the casing 25. The elastic member 52 in this embodiment is a tension spring, and the tension spring can be replaced by other elastic members of similar functions. The action of the resilient member 52 causes the second end 46 of the lever to always abut the cam peripheral surface of the eccentric cam 60. When the secondary motor 56 rotates, the output shaft 58 drives the eccentric cam 60 to rotate together. Due to the configuration of the cam peripheral surface of the eccentric cam 60 itself, it drives the second end 46 of the lever 42 against the pivoting shaft 50 against the force of the elastic member 52. motion. In addition, the lawnmower 100 is provided with a restricting member 78 that moves in the direction to the extreme position when the lever 42 moves in a direction away from the receiving seat 28 to abut against the restricting member 78. Only when the pay-off electronic switch 40 is activated to rotate the secondary motor 56, the lever 42 overcomes the force of the elastic member 52 to drive the reel 32 to move and release the line, thereby reducing the waste of the grass line.

The lever 42 can directly or indirectly drive the spool 32 to move circumferentially. Movement of the lever 42 drives the circumferential movement of the spool 32 about its axis of rotation to move between the first state and the second state.

The secondary motor 56 has a motor shaft 56a. Preferentially, the transmission further includes a second driveline disposed between the motor shaft 56a and the output shaft 58. The second drive train is provided as a speed reduction mechanism, and the speed reduction mechanism in this embodiment employs a planetary gear mechanism 66. Of course, those skilled in the art can envisage replacing with other reduction transmission mechanisms, such as other gear transmission methods, pulley transmissions and the like.

Referring further to Figures 4 and 5, in the present embodiment, the lever 42 indirectly drives the reel 32 to move circumferentially. Preferably, between the lever 42 and the reel 32, a slider 33 that is fixed to the receiving seat 28 in a circumferential direction and is radially movable is provided. Specifically, the receiving seat 28 is provided with a radially extending strip hole 35. The slider 33 is disposed in the strip hole 35 and is circumferentially fixed to the receiving seat 28 to be radially movable.

The slider 33 is moved radially so that the circumferential movement of the reel 32 and the housing 28 produce a difference in rotational speed. The reel 32 is provided with a circumferentially extending toothed groove 37. The toothed groove 37 includes a first toothed edge 39 and a second toothed edge 41, and a first toothed edge 39 and a second toothed edge 41. The number of teeth on the same is circumferentially staggered, and each tooth on the first toothed edge 39 includes a radially extending radial face 45 and a circumferentially obliquely extending circumferential face 47 on the second toothed edge 41 Each of the teeth includes a radially extending radial surface 45 and a circumferentially obliquely extending circumferential surface 47; the slider 33 is provided with protruding teeth 49 that are radially movable within the toothed groove 37, the protruding teeth 49 and the radial direction When the surface 45 abuts, the slider 33 drives the reel 32 to rotate in synchronization with the accommodating seat 28; when the protruding teeth 49 abut against the circumferential surface 47, the slider 33 drives the reel 32 to move relative to the accommodating seat 28, thereby generating a speed difference.

A biasing member 54 is disposed between the receiving seat 28 and the slider 33. The biasing member 54 biases the slider 33 to keep the slider 33 in the synchronous rotation of the driving reel 32 and the receiving seat 28. Therefore, only when the sliding force of the slider 33 is driven against the urging force of the biasing member 54, the circumferential movement of the reel 32 and the accommodating seat 28 generate a difference in rotational speed. The biasing member 54 of this embodiment is a coil spring, and those skilled in the art will appreciate that other biasing members, such as tension springs, can achieve the same effect.

An intermediate member 74 that is fixed to the receiving seat 28 in the circumferential direction and axially movable is provided between the lever 42 and the slider 33. Specifically, the middle arm 48 of the lever is provided with an opening, the intermediate member 74 is also provided with a central hole 74a through which the lever 42 is opened, and the intermediate member 74 is commonly mounted on the rotating shaft 36 through the central hole 74a; the lever 42 utilizes the middle arm of the lever 48 abuts the intermediate member 74 to enable the intermediate member 74 to be driven. The receiving seat 28 is provided with an axially extending through hole 75, and the intermediate member 74 is partially passed through the through hole 75 so as to be fixed to the receiving seat 28 in the circumferential direction and axially movable.

The lever 42 drives the intermediate member 74 to move axially to drive the slider 33 to move radially. Specifically, the intermediate member 74 is provided with a first inclined surface 53 disposed obliquely with respect to the axial direction, and the slider 33 is provided with a second inclined surface 55 extending obliquely with respect to the axial direction, when the intermediate member 74 is axially moved toward the wire reel 32. At this time, the first inclined surface 53 abuts against the second inclined surface 55 to cause the slider 33 to move radially, thereby driving the coil 32 to move circumferentially by the engagement of the protruding teeth 49 and the toothed grooves 37. It is to be understood by those skilled in the art that only one inclined surface disposed obliquely in the axial direction may be disposed between the intermediate member 74 and the slider 33. Any technical solution similar to the present embodiment should be covered within the scope of the present invention.

In order to reduce the friction between the lever 42 and the intermediate member 74, the second end 46 of the lever 42 is provided with a rolling friction member 57, in particular a rolling bearing, which causes the friction between the lever 42 and the intermediate member 74 to be rolling friction, thereby greatly The wear of the lever 42 and the intermediate member 74 is reduced to increase the life of the lawnmower 100. Of course, other types of rolling friction members 57 such as balls, rollers, end bearings, and the like may also be used.

In this embodiment, the grass cutter 100 is further provided with an elastic member 61 for biasing the intermediate member 74 to abut against the lever 42. Only when the force of the elastic member 61 is overcome can the intermediate member 74 be axially oriented toward the line. The disk 32 moves and radially drives the drive slider 33 and ultimately drives the spool 32 to move circumferentially.

Thus, in the present embodiment, the lever 42 drives the reel 32 to move between three positions, in the first position, the reel 32 is in the first state; in the second position, the reel 32 is in the second state; At the three positions, the reel 32 is again in the first state.

Specifically, as shown in FIG. 5, in the first position, the protruding teeth 49 on the slider 33 abut against the radial surface 45 of the first toothed edge 39, and the slider 33 can drive the wire reel 32 to synchronize with the receiving seat 28. Rotate.

As shown in Fig. 6, in the second position, the protruding teeth 49 on the slider 33 do not abut against the radial faces 45 of any of the teeth on either of the toothed sides, and the second position has two cases: one case The protruding tooth 49 abuts against the circumferential surface 47 of the second toothed edge 41, and the linear movement of the slider 33 drives the reel 32 to rotate relative to the receiving seat 28; in another case, the protruding tooth 49 does not have a circumferential surface. 47 abut, the reel 32 rotates to drive The grass line 34 rotates, and the centrifugal force generated by the free end 34a of the grass line also drives the reel 32 to rotate relative to the holder 28.

As shown in FIG. 7, in the third position, the protruding teeth 49 on the slider 33 abut against the radial faces 45 on the second toothed edges 41, and the slider 33 can drive the wire reels 32 to rotate synchronously with the receiving seats 28. The direction in which the biasing member 54 urges the spool 32 is opposite to the direction in which the lever 42 biases the spool 32. Specifically, the biasing direction of the biasing member 54 to the slider 33 is opposite to the biasing direction of the lever 42 to the slider 33. More specifically, the biasing direction of the biasing member 54 to the slider 33 is opposite to the intermediate member 74. The direction of application of the block 33 is reversed.

The biasing member 54 drives the reel 32 to move from the third position to the fourth and fifth positions. In the fourth position, the reel 32 is in the second state, and in the fifth position, the reel 32 is in the first state.

Specifically, as shown in FIG. 8, in the fourth position, the protruding teeth 49 on the slider 33 do not abut against the radial faces 45 of any of the teeth on either of the toothed sides, and the fourth position has two cases: In one case, the protruding teeth 49 abut against the circumferential surface 47 of the first toothed edge 39, the slider 33 drives the reel 32 to rotate relative to the receiving seat 28, and in the other case, the protruding tooth 49 does not have a circumferential surface. When the 47 is abutted, the rotation of the reel 32 drives the grass to rotate, and the centrifugal force generated by the free end 34a of the grass also drives the reel 32 to rotate relative to the holder 28.

As shown in FIG. 9, in the fifth position, the protruding teeth 49 on the slider 33 abut against the radial faces 45 of the first toothed edges 39, and the slider 33 drives the reels 32 to rotate in synchronization with the receiving seats 28.

Referring back to FIG. 4, the slider 33 is provided with a weight 51. In this embodiment, the counterweight 51 rotates with the slider 33 to the centrifugal force generated by the slider 33 and the biasing member 54 biases the slider 33. The same direction. In the conventional switch-on and take-off mechanism, the direction of the centrifugal force generated by the weight of the counterweight with the slider is opposite to the direction of the biasing force of the biasing member to the slider. Therefore, when the lawnmower 100 of the present embodiment is turned on and off, the slider 33 cannot drive the reel 32 to rotate and pay the line. Only when the payout electronic switch 40 is activated, the secondary motor 56 can be driven, and the slider 33 can be driven. The reel 32 is rotated to release the line, thereby reducing the loss of the grass line. Of course, a separate weight is not provided on the slider 33, and an eccentric mass distribution may be provided on the slider. In this case, a weight is provided in a portion where the weight of the slider is heavy.

Since the direction of the centrifugal force generated by the rotation of the weight 51 is the same as the direction of the biasing force of the biasing member 54 to the slider 33, it is conceivable by those skilled in the art that the biasing member may not be provided, and only the centrifugal force generated by the rotation of the weight 51 is generated. The wire reel 32 is moved from the third position to the fourth and fifth positions.

In the present embodiment, the protruding teeth 49 are two, and the two protruding teeth 49 are disposed at a certain distance in the extending direction of the slider 33, which is the diameter of the center circle of the toothed groove 37, so that the first protruding teeth 49 When the first toothed edge 39 is engaged with the tooth, the second protruding tooth 49 can be radially other of the toothed groove 37 The end engages with the second toothed edge 41 to make the force of the wire reel 232 more uniform. It will be appreciated by those skilled in the art that only one protruding tooth may be provided.

The control device includes a stop device that controls the secondary motor to stop rotating. The stopping device includes a sensing unit, and a control unit that receives the signal of the sensing unit and controls the shutdown of the secondary motor. In this embodiment, the control unit is electrically connected to the main switch 27.

Referring to FIGS. 2, 3, 10, and 11, the sensing element includes a Hall inductor 68 disposed in the casing 25, and a magnetic member 72 disposed on the transmission, the Hall sensor 68 and the magnetic member. 72 is next to the setting. In this embodiment, the Hall sensor 68 is fixedly disposed in the casing 25, the magnetic member 72 is disposed on the eccentric cam 60 on the end surface of the Hall inductor 68, and the magnetic member 72 is a magnet; Other magnetically replaceable materials that interact with Hall sensor 68 are employed.

When the payout electronic switch 40 is activated, the secondary motor 56 rotationally drives the eccentric cam 60 to rotate about the secondary motor output shaft 58, and the magnetic member 72 disposed on the eccentric cam 60 has a first state that is opposite to the Hall sensor 68, and The second state in which the Hall sensors 68 are staggered from each other. When the magnetic member 72 has the first state with the Hall sensor 68, the sensing unit generates an inductive signal; when the magnetic member 72 has the second state with the Hall sensor 68, the inductive signal disappears. In this embodiment, the control unit is configured as a PCB board, and once the PCB board receives the sensing signal generated by the sensing unit, the secondary motor 56 is stopped.

Referring to Fig. 12, the operation of the pay-off mechanism during the operation of the lawnmower 100 of the present embodiment will be described below. The main switch 27 is activated to rotate the reel 32 and the receiving base 28 synchronously, and the PCB board is powered; the pay-off electronic switch 40 is activated, and the secondary motor 56 rotates and drives the reel 32 to move and the receiving seat 28 generates a rotational speed difference when the secondary motor The 56-drive eccentric cam 60 is rotated to 0.5 revolutions, that is, the time period from the time when the secondary motor 56 rotates, the time delay eccentric cam 60 rotates for 0.5 weeks, and the PCB board starts detecting the sensing signal. If the control unit does not receive the sensing signal, that is, the magnetic member 72 and the Hall sensor 68 are still in the second state that are mutually offset, the control unit does not perform the stop control of the secondary motor 56, and the secondary motor 56 continues to rotate. Once the PCB board receives the sensing signal, i.e., the magnetic member 72 has a first state that is opposite to the Hall sensor 68, the control unit automatically performs control that the secondary motor 56 stops rotating.

As described above, regardless of whether the main switch 27 is activated or not, the lawn mower 100 activates the pay-off electronic switch 40 independent of the main switch 27 regardless of whether it is in an active state or a non-operating state, and the reel 32 can be brought into line. Therefore, in the embodiment, in the operation process of the pay-off mechanism of the grass-carrying machine 100, the electronic switch 40 can be activated to generate a speed difference between the wire reel 32 and the receiving base 28; the electronic switch 40 is manually released. The disc 32 and the receiving seat 28 are restored to be relatively stationary, thereby achieving the reeling of the reel 32.

Figure 13 shows a lawnmower 200 according to a second embodiment of the present invention.

The lawn mower 200 has a similar structure to that of the first embodiment 100, and the differences will be described below in detail, and the same structures are denoted by the same reference numerals and will not be described again.

In the present embodiment, the main motor 26 and the secondary motor 56 are disposed in parallel with each other in the casing 25, that is, the motor shaft 36 of the main motor row 26 is disposed in parallel with the motor shaft 56a of the secondary motor 56. Of course, the position of the primary motor 26 and the secondary motor 56 is not limited to the manner enumerated, and those skilled in the art can consider the relative tilt setting.

The second drive train between the motor shaft 56a of the secondary motor 56 and the output shaft 58 is a speed reduction mechanism that includes a planetary gear mechanism 66. A second drive train disposed between the spool 32 and the secondary motor output shaft 58 includes a transmission member coupled to the output shaft 58, a pivot member driven by the transmission member, and an intermediate member 74 driven by the pivot member. In this embodiment, the transmission member is disposed to be fixedly coupled to the end surface cam 60' of the output shaft 58, and the pivoting member is disposed as a lever 42 having a pivoting shaft 50 as a center of rotation, wherein the pivot shaft 50 has the first end 44 of the lever 42 Fixedly coupled to the housing 25, the second end 46 of the lever abuts the cam surface of the end cam 60'. An elastic member 52 disposed between the portion of the lever 42 adjacent to the second end 46 and the casing 25 is provided. The action of the resilient member 52 causes the second end 46 of the lever to always abut the cam surface of the end cam 60'. When the secondary motor 56 rotates, the output shaft 58 drives the end face cam 60' to rotate together. Due to the configuration of the cam surface of the end face cam 60' itself, it overcomes the force of the elastic member 52 to drive the second end 46 of the lever 42 about the pivot axis. 50 sports. In addition, the lawnmower 100 is provided with a restricting member 78 that moves in the direction to the extreme position when the lever 42 moves in a direction away from the receiving seat 28 to abut against the restricting member 78. Only when the pay-off electronic switch 40 is activated to rotate the secondary motor 56, the lever 42 overcomes the force of the elastic member 52 to drive the reel 32 to move and release the line, thereby reducing the waste of the grass line.

In this embodiment, the lever 42 is also an indirect drive spool 32 for circumferential movement. The movement and construction of the drive spool 32 and the payout control and operation of the take-up mechanism to the spool 32 are incorporated in the first embodiment.

14 to 21 show a lawnmower 300 according to a third embodiment of the present invention.

The lawn mower 300 has a similar structure to the first embodiment 100, and the differences will be described below in detail, and the same structures are denoted by the same reference numerals and will not be described again.

Referring to Fig. 14, in the present embodiment, the electric actuator is an electromagnet 70 disposed in the casing 25, and the electromagnet 70 is controlled to be activated by the payout electronic switch 40. The electromagnet 70 has an output end 70a extending parallel to the motor shaft 36 of the main motor. When the payout electronic switch 40 is closed, the electromagnet 70 is energized to cause the output shaft 70a to move axially as indicated by the arrow M in FIG. When the payout electronic switch 40 is broken, the electromagnet 70 Powering down causes output shaft 70a to produce an axial movement that is opposite to the direction indicated by arrow M.

A third drive train is disposed between the output end 70a and the reel 32. Through the third drive train, the drive spool 32 is moved between the first state and the second state when the electromagnet 70 is energized. In the first state, the reel 32 rotates in synchronization with the accommodating seat 28; in the second state, a difference in rotational speed is generated between the reel 32 and the accommodating seat 28.

In the present embodiment, the reel 32 moves axially along the axis of rotation of the grass head 22 to switch between the first state and the second state.

The third drive train includes a rotating member pivotally coupled to the casing 25, and a slider 174 driven by the rotating member, the sliding member 174 driving the spool 32 to move relative to the receiving seat 28 in the axial direction. In this embodiment, the rotating member is disposed as a lever 142 having a pivoting shaft 150 as a center of rotation, wherein the pivoting shaft 150 is located at an intermediate portion of the lever 142, and the first end 144 of the lever 142 is mated with the slider, and the second end 146 of the lever The lever 142 is in a bent strip shape, and the pivot shaft 50 is perpendicular to the rotating shaft 36 of the grass head 22, and the structural layout is reasonable.

Specifically, the receiving seat 28 is provided with an axially extending through hole 175. The sliding member 174 partially passes through the through hole 175 and abuts against the reel 32, so that the axial movement of the sliding member 174 can drive the reel 32 to move axially. In this embodiment, the sliding member 174 is located between the lever 142 and the grass head 22, so that when the wire is released, the cover 30 is not required to strike the ground, and the lawn mower does not need to be interrupted when the lawn mower is in the trimming working state. The work is easy to operate. The slider 174 is fixed to the receiving seat 28 in a circumferential direction but axially movable.

Compared with directly driving the reel 32 housed between the receiving seat 28 and the cover 30, the structure of the lever 142 indirectly driving the reel 32 through the sliding member 174 is simpler, and it is not necessary to provide other mating structures on the reel 32. The receiving seat 28 of the grass head 22 of the present embodiment can be adapted to many separately sold reel attachments on the market, especially the reel 32 for tapping the pay line, so that the consumer can replace the reel 32.

Referring to FIG. 15, during operation of the lawnmower 300, the slider 174 is rotated by the receiving seat 28 in synchronization with the receiving seat 28. If the lever 142 directly abuts against the slider 174 and drives the slider 174 to move axially, the lever 142 The friction between the slider 174 and the slider 174 causes a very large amount of wear, which greatly reduces the life of the lawnmower 300. In order to reduce the wear between the lever 142 and the slider 174, in this embodiment, a rotary friction member is disposed between the lever 142 and the slider 174. Specifically, the sliding member 174 is provided with a supporting surface, the rotating friction member is a bearing 176, the bearing 176 is supported on the supporting surface, and the lever 142 abuts on the end surface of the bearing 176 to drive the bearing 176 to move in the axial direction to drive the sliding member 174. Move in the axial direction. Preferably, the bearing 176 is an end bearing that can have the lever 142 and the slider 174 The sliding friction in direct contact becomes a rolling friction between the two, thereby greatly reducing the friction and thus the wear.

In this embodiment, the bearing 176 is sleeved on the sliding member 174 and loosely engaged with the sliding member 174. Thus, the bearing 176 can follow the sliding member 174 or not rotate with the sliding member 174 according to the degree of loose fitting, and the bearing 176 The friction between the lever 142 and the bearing 176 is smaller when not rotating, and the life of the lawnmower 300 can be further improved.

To further reduce the friction, those skilled in the art will appreciate that a rolling member such as a ball, a roller or the like may be provided at the second end 146 where the lever 142 abuts the end surface of the bearing 176, and the friction between the lever 142 and the end surface of the bearing 176 may be reduced. , thereby further increasing the service life of the lawnmower 300.

Preferably, the second end 146 of the lever 142 has a fork shape, and the two ends of the fork are symmetrically disposed with respect to the bearing 176, and the force applied by the lever 142 to the bearing 176 is more uniform and reasonable.

It will be appreciated by those skilled in the art that the second end 146 of the lever 142 has other shapes, such as a simple strip shape; or the second end 146 of the lever 142 may not be provided with a rolling member. Any technical solutions similar to the present embodiment should be covered within the scope of the present invention.

The lever 142 drives the reel 32 to disengage from the receiving seat 28 against the biasing force of the biasing member 154 under the action of the payout electronic switch 40. When the payout electronic switch 40 is released, the electromagnet 70 is de-energized, and the output end 70a generates an axial movement opposite to the direction indicated by the arrow M, and the reel 32 is returned to the receiving seat 28 by the biasing member 154. During the recovery process of the reel 32, the sliding member 174 is moved in a direction away from the receiving seat 28. In order to limit the range of motion of the slider 174, the slider 174 is prevented from being disengaged from the receptacle 28, and the trimmer 300 is further provided with a stopper 178 which can abut against the end of the slider 174 away from the receptacle 28. In this embodiment, the limiting member 178 is matched with the rotating shaft 36 of the grass head 22 and has a first limiting surface 80 perpendicular to the rotating shaft 36. The first limiting surface 80 can restrict the sliding member 174 from moving away from each other. The range of motion of the holder 28 is adjusted to ensure the connection of the slider 174 to the holder 28. Preferably, the limiting member 178 is further provided with a second limiting surface 82 that can abut the end surface of the bearing 176 away from the receiving seat 28, and the second limiting surface 82 can restrain the bearing 176 from being away from the bearing when the bearing 176 abuts against the bearing 176. The range of motion of the seat 28 direction. In this embodiment, since the end of the sliding member 174 away from the receiving seat 28 is farther away from the receiving seat 28 than the end of the bearing 176 away from the receiving seat 28, the second limiting surface 82 is perpendicular to the rotating shaft 36 of the grass head 22, and The first limiting surface 80 is adjacent to the receiving seat 28. Therefore, in the embodiment, one of the limiting members 178 simultaneously limits the range of motion of the sliding member 174 and the bearing 176, and has a simple structure and a reasonable layout.

As shown in FIG. 16, the wire tray 32 is provided with at least one protrusion 184 on the end surface of the receiving seat 28, and the line At least one protrusion 190 is disposed on the end surface of the disk 32 adjacent to the cover 30. The at least one protrusion 184 and the at least one protrusion 190 are disposed opposite to each other in the axial direction of the disk 32, and the receiving seat 28 is provided with at least a circumferential distribution. Two stops 186, the cover 30 is provided with at least one stop portion 192 distributed circumferentially, and the stop portion 192 and the stop portion 186 are staggered in the circumferential direction, and when the wire reel 32 is in the first state, the at least A protrusion 184 is engaged with one of the at least two stops 186, or the at least one protrusion 190 is engaged with the at least one stop 192. When the protrusion 184 is engaged with the stopper portion 186, the reel 32 rotates in synchronization with the holder 28 in the first state. The protrusion 190 is engaged with the stopper portion 192, the reel 32 rotates in synchronization with the cover 30, and the cover 30 is always rotated synchronously with the holder 28, whereby the reel 32 and the holder 28 are also rotated in the first state. Regardless of the change in the number of projections and stops, in the first position, a projection engages with a stop. Accordingly, regardless of the change in the number of projections and stops, in the third position, a projection is engaged with a stopper.

Thus, during the axial movement of the wire disc 32, during the contact of the projections 184 on the spool 32 with the adjacent two stops 186 on the receptacle 28, the projections 190 on the spool 32 will be associated with the cover 30. The upper stop portion 192 between the two stopping portions 186 abuts, so as to prevent the reel 32 from being disconnected from the receiving seat 28 and the cover 30 for a long time, thereby achieving a controllable length of the paying line and ensuring the grass-grawing machine 300 Reliable work.

During normal operation of the lawnmower 300, the reel 32 is held in the first state and the first position by the biasing member 154. At this time, the reel 32 is engaged with the receiving seat 28 and rotates synchronously with the receiving seat 28, and is wound around the disc. The grass line on the 32 extends the lawn outside the receptacle 28.

When the grass line 34 is worn to a certain extent and the desired grassing radius is not reached, the operator can drive the wire tray 32 through the pay-off mechanism. Specifically, the operator activates the payout electronic switch 40, the electromagnet 70 is energized, and the output end 70a moves axially to drive the lever 142 to rotate. The first end 144 of the lever 142 pivots about the pivot shaft 150 away from the receiving seat 28, The pivoting of one end 144 pivots the second end 146 of the driving lever 142 toward the receiving seat 28, and the movement of the second end 146 toward the receiving seat 28 presses the bearing 176, the sliding member 174, and the reel 32 to make the line The disc 32 gradually reaches the second position as shown in Fig. 17, at which time the projection 184 on the reel 32 is disengaged from the stop 186 on the receptacle 28, and the projection 190 on the reel 32 and the cover 30 The stopper portion 192 has not yet abutted, a speed difference is generated between the reel 32 and the receiving seat 28, and the reel 32 is in the second state, and the centrifugal force of the grassing line 34 wound on the reel 32 pulls it from the reel 32. A portion, i.e., the longer free end of the grass line 34 extends beyond the receptacle 28, allowing the grass cutter 300 to have a larger grassing radius.

After reaching the second position as shown in FIG. 17, the reel 32 continues to move away from the edge by the lever 142. Moving away from the accommodating seat 28 until the reel 32 reaches the third position as shown in FIG. 18, at this time, the reel 32 is again in the first state, and the projection 190 on the reel 32 and the stopper on the cover 30 When the 192 abuts, since the cover 30 is engaged with the accommodating seat 28, the reel 32 rotates again in synchronization with the accommodating seat 28, and the tying line wound on the reel 32 again hits the grass at a normal rotational speed.

When the third position shown in FIG. 18 is reached, the lever 142 is depressed to the extreme position, the biasing member 154 is also compressed to the limit, and the biasing member 154 has a tendency to urge the spool 32 to move toward the receiving seat 28. At this time, if the payout electronic switch 40 is released, the reverse movement of the electromagnet output end 70a causes the lever 142 to no longer pass the bearing 176, the slider 174 lowers the reel 32, and the reel 32 acts on the biasing member 154 and the cover. 30 is disengaged and moved toward the receiving seat 28 to the fourth position shown in Fig. 19, at which time the projection 190 on the reel 32 is disengaged from the stop portion 192 on the cover 30, and the projection 184 on the reel 32. The retaining portion 186 on the receiving base 28 has not yet abutted, and the reel 32 is again in the second state. The rotational speed difference between the reel 32 and the cover 30 and the receiving seat 28 is again generated, and the grassing line wound on the reel 32 is wound. 34 and then pull out a section and put the line.

The reel 32 continues to move toward the receiving seat 28, gradually reaching the fifth position as shown in FIG. 20, and the reel 32 is again in the first state. At this time, the protrusion 184 and the next stopping portion 186 abut, the line The disk 32 is engaged with the holder 28 and rotated synchronously to pluck the grass at a normal rotational speed.

The operation of the pay-off mechanism of the lawnmower 300 of the present embodiment will be described below. The pay-off electronic switch 40 is activated to cause a speed difference between the electromagnet 70 driving the reel 32 and the receiving seat 28; the pay-off electronic switch 40 is manually released, and the reel 32 and the receiving seat 28 are restored to be relatively stationary, thereby realizing the reel 32. Release the line. In this embodiment, only one component of the payoff switch 40 controls the energization and disconnection of the electromagnet, which simplifies the structure, is convenient to operate, and further reduces the cost.

Another optional wire-drawing operation of the pay-off mechanism starts the main switch 27 before starting the pay-off electronic switch 40, so that the reel 32 rotates synchronously with the receiving seat 28; the pay-off electronic switch 40 is activated to drive the electromagnet 70 The movement of the reel 32 and the receiving seat 28 generate a difference in rotational speed; the payout electronic switch 40 is released, and the reel 32 and the receiving base 28 resume synchronous rotation; thereby achieving the payout of the reel 32.

In the fourth embodiment of the lawnmower of the present invention, the structure of the grassing head adopts a structure similar to that of the first embodiment, except that the lawnmower eliminates the electric drive and the transmission of the driving coil relative to the housing. Device. The slider weight is disposed near one end of the biasing member, so that when the speed of the grass head is reduced in the direction of rotation, the slider cooperates with the biasing member to drive the coil to generate a speed difference with respect to the receiving seat. The reel rotates in a radial direction when it is in a second state in which the housing seat is in a speed difference.

Referring to FIGS. 21 to 23, the control device of the fourth embodiment includes a control electrically connected to the main motor 26. The control circuit is used to control the main motor 26 to switch between a normal operating speed and a payout speed. The control circuit preferably employs a PWM modulation circuit E1.

Referring to Fig. 21, the power source P supplies power to the main switch K1, and the main switch K1 is electrically connected to the main motor M. The PWM modulation circuit E1 includes a payoff electronic switch K2. The PWM modulation circuit is a well-known motor control technology in the industry and will not be described here.

Referring to Fig. 22, in the normal cutting operation state of the lawnmower, the main switch K1 is closed, the main motor M is started to rotate, and the rotating shaft of the main motor M drives the reel 32 to rotate synchronously with the receiving base 28.

Referring to FIG. 23, when the lawn mower needs to pay off due to wear during the cutting process, the payout electronic switch K2 is closed, and the rotation speed of the main motor M is controlled by the PWM modulation circuit E1, and the main motor M rotates at a speed V. A change occurs, and a speed difference rotation occurs between the reel 32 and the housing 28 under the action of the centrifugal force of the slider.

The operating speed V of the main motor M includes the operating rotational speed V0 and the payout rotational speed V1. In the present embodiment, the payout speed V1 is smaller than the operating speed V0.

Referring to Fig. 24, the course of the change of the operating speed V of the main motor M with time T is illustrated. Under normal working conditions, the working speed V0 of the main motor M of the lawnmower is between 5,000 and 10,000 rpm, and the preferred operating speed V0 is 8,500 rpm. The pay-off rotational speed V1 of the present embodiment is smaller than the working rotational speed V0, and thus the pay-off rotational speed V1 is set between 0 and 3500 rpm, and preferably the take-up rotational speed V1 is 3000 rpm. On the time axis T, wherein during the time period t1, the running speed of the main motor M is reduced from the working speed V0 to the pay-off speed V1, the time period t1 is less than 1 second; the pay-off speed V1 is maintained for the t2 time period, the t2 time The segment is within 0.2 to 2 seconds; during the t3 period, the operating speed of the main motor M is restored from the payout speed V1 to the operating speed V0, which is also less than 1 second.

In the fifth embodiment of the lawnmower of the present invention, the structure of the grassing head adopts a structure similar to that of the first embodiment, except that the lawnmower eliminates the electric drive for driving the cable tray relative to the housing seat and the transmission thereof. Device. The slider weight is disposed at an end away from the biasing member, so that when the grass head increases in the rotational direction thereof, the slider cooperates with the biasing member to drive the coil to generate a speed difference with respect to the receiving seat. The reel rotates in a radial direction when it is in a second state in which the housing seat is in a speed difference.

Referring to Figures 21 to 23, and Figure 25, the control device of the fifth embodiment includes a control circuit electrically coupled to the main motor 26 for controlling the change in the rotational speed of the main motor 26 during operation. The control circuit uses a PWM modulation circuit. The difference from the fourth embodiment is that the payout speed V1 is greater than the operating speed V0. During the change of the running speed V of the main motor M with the time T, wherein during the time period t1, the running speed of the main motor M is increased from the working speed V0 to the pay-off speed V1, and the t1 period is less than 1 second; The line speed V1 is maintained for a period of t2, and the period t2 is within 0.2 to 2 seconds; during the period of time t3, the running speed of the main motor M is restored from the pay-off speed V1 to the working speed V0, and the period t3 is also less than 1 second. . As with the fourth embodiment, the operating speed V0 of the main motor M is between 5,000 and 10,000 rpm, and preferably the operating speed V0 is 8,500 rpm. The pay-off rotational speed V1 of the present embodiment is greater than the working rotational speed V0, and thus the pay-off rotational speed V1 is set between 11,000 and 15,000 rpm, and preferably the take-up rotational speed V1 is 12000 rpm.

Referring to Fig. 26, the operation of the pay-off mechanism of the fourth and fifth embodiments of the present embodiment will be described below. The main switch K1 is activated to rotate the reel 32 and the receiving base 28 at the working speed V0; the pay-off electronic switch K2 is activated, and the main motor M is increased or decelerated to V1, so that the speed difference between the reel 32 and the receiving seat 28 is generated. The main motor M is maintained at the increasing speed or the decreasing speed V1 for a preset period of time, and the main motor M speed is restored to the working speed V0, and the reel is finished. The preset holding period of the fourth and fifth embodiments is 0.2 to 2 seconds.

Referring to FIG. 27 to FIG. 30, in the sixth embodiment of the lawnmower of the present invention, the structure of the grass head is the same as that of the fourth embodiment, and details are not described herein. The control device includes a control circuit electrically coupled to the main motor 26 for controlling a change in the rotational speed of the main motor 26 during operation. In the present embodiment, the payout speed V1 is smaller than the operating speed V0. The control circuit preferably employs a brake switch circuit E2.

Referring to Fig. 27, the power source P supplies power to the main switch K1, and the main switch K1 is electrically connected to the main motor M. The brake switch circuit E2 includes a pay-off electronic switch K3, and the pay-off electronic switch K3 is a single-pole double-throw switch. The single-pole double-throw switch has an NC end and a NO end, and the NC end and a NO end are selectively in a closed position.

Referring to Fig. 28, in the normal operation of the lawnmower, the NC end of the payout electronic switch is in the closed position, the main switch K1 is closed, and the main motor M is operated at full speed.

Referring to Fig. 29, when the line is released, the NC end of the payout electronic switch is opened, the NO end is in the closed position, the main motor M is short-circuited, and the main motor M speed is reduced to zero.

Referring again to FIG. 28, the NO end of the payout electronic switch is released, the NC end of the payout electronic switch is in the closed position, and the main motor M resumes full speed operation.

Referring to Fig. 30, the variation of the operating speed V of the main motor M with time T is illustrated. Under normal working conditions, the working speed V0 of the main motor M of the lawnmower is between 5,000 and 10,000 rpm, and the preferred operating speed V0 is 8,500 rpm. The take-up speed V1 is 0 rpm, that is, the take-up speed V1 of the main motor M is reduced to zero. On the time axis T, wherein during the time period t1, the operating speed of the main motor M is reduced to zero by the operating speed V0, the t1 period is less than 1 second; the zero speed is maintained for the t2 period, the t2 period is not fixed because The operator needs to release the neutral switch of the pay-off electronic switch and close it. The output end of the electronic switch NC; during the t3 time period, the operating speed of the main motor M after the NC end of the payout electronic switch is closed returns from zero to the working speed V0, and the time period t3 is also less than 1 second.

The operation of the pay-off mechanism of the sixth embodiment will be described below. The main switch K1 is activated to rotate the reel 32 and the receiving base 28 synchronously; the NO end of the payoff electronic switch is closed, the main motor M is decelerated to zero, a speed difference is generated between the reel 32 and the receiving seat 28; and the payoff electronic switch is released. At the NO end, the NC end of the electronic switch is closed, the main motor speed is restored, and the reel and the receiving seat resume synchronous rotation.

The wire-drawing operation disclosed in the fourth to sixth embodiment of the lawnmower of the present invention is different from the previous embodiment in that the wire is discharged during normal operation, that is, the cutting-off electronic switch is selected while the cutting operation is not interrupted. It can be placed, easy to operate, simple and reliable.

31 to 35 show a lawnmower 400 according to a seventh embodiment of the present invention.

The lawnmower 400 has a similar structure to the lawnmower 100 of the first embodiment, and the differences will be specifically described below. For convenience of description, the same structures are denoted by the same reference numerals.

As shown in FIG. 31 and FIG. 32, in the same manner as the first embodiment, the housing 28 is provided with a cover 30, and the inner cavity formed by the receiving seat 28 and the cover 30 is provided with a reel 32. A slider 33 is disposed between the accommodating seat 28 and the reel 32. The slider 33 and the accommodating seat 28 are circumferentially fixed and radially movable, and the manner in which the slider 33 and the reel 32 are coupled to each other is first. The embodiments are the same and will not be described in detail.

In this embodiment, when the main switch (not shown) controls the rotation of the main motor 26, the reel 32 is in the first state, and at this time, the reel 32 is stationary with respect to the receiving base 28, that is, synchronously rotating with the receiving seat 28, at this time The grass machine 400 cannot be placed. In the second state, the pay-off electronic switch (not shown) controls the relative movement of the reel 32 and the receiving seat 28 to cause a relative speed difference between the reel 32 and the receiving base 28. Thereby achieving the release line. Therefore, the lawnmower 400 is controlled by the pay-off electronic switch independent of the main switch, and the main switch is operated when the switch is turned on and off, so that the pay-off electronic switch can be operated according to actual needs. It avoids the waste of paying off the line every time, which further reduces the loss of the grass line.

Specifically, the pay-off mechanism further includes a stopping device 401 disposed on the receiving seat 28, the stopping device 401 has a first position and a second position, wherein the slider between the first position and the second position, the slider 33 is moved radially relative to the receptacle 28 to move the spool 32 relative to the receptacle 28. Thereby, a relative speed difference is generated between the reel 32 and the receptacle 28. In turn, the line is released.

Further, when the stopping device 401 is in the first position, the stopping device 401 restricts the radial movement of the slider 33 relative to the receiving seat 28, so that the reel 32 and the receiving base 28 remain relatively stationary, and the payout cannot be performed. When the stop device 401 is in the second position, the slider 33 is radially movable relative to the receptacle 28. The radial movement of the slider 33 relative to the receiving seat 28 can push the wire reel 32 relative to the receiving seat 28 At a certain angle, a relative speed difference is generated between the reel 32 and the receiving base 28, and the payout is performed.

The stop device 401 includes a stop member 403 pivotally disposed on the receiving seat 28. When the stop member 403 is in the first position, the stop member 403 stops the slider 33 to limit the radial direction of the slider 33 relative to the receiving seat 28. The movement is made such that the reel 32 is stationary with respect to the holder 28, and the payout cannot be performed. When the stopper 403 is pivoted to the second position, the slider 33 is radially movable relative to the receiving seat 28, so that the wire reel 32 can be rotated by a certain angle with respect to the receiving seat 28 to realize the payout.

Preferably, the pivot axis of the stop 403 overlaps the axis of rotation of the receptacle 28. In this way, the structure of the pay-off mechanism can be made compact, and the size of the lawnmower 400 is small. Of course, the pivot axis of the stopper 403 and the axis of rotation of the receiving seat 28 may also be disposed so as not to overlap, and preferably, may be disposed in parallel with each other.

As in the first embodiment, a biasing member 54 is provided between the housing seat 28 and the slider 33, and the biasing member 54 biases the slider 33 to keep the protruding teeth (not shown) in a radial direction (not shown). )Abut.

The stop device 401 further includes a reset device 405 disposed between the stop member 403 and the receptacle 28, the reset device 405 causing the stop member 403 to return from the second position to the first position. In this embodiment, the reset device 405 is provided as a compression spring 405. Of course, the reset device 405 can also be provided as a tension spring, a torsion spring or the like.

As shown in FIGS. 32 and 33, specifically, the stopper 403 has a stopper projection 407 and a mounting portion 409, and the slider 33 has a first end portion 411 which can extend out of the outer peripheral portion of the housing seat 28 and the first portion The end portion 411 is opposite to the second end portion 413, and the second end portion 413 is located inside the outer peripheral portion of the receiving seat 28. The biasing member 54 is disposed between the receiving seat 28 and the second end portion 413. The slider 33 further has a hollow portion 415 and an abutting portion 417 between the first end portion 411 and the second end portion 413, and the abutting portion 417 is from the second end portion 413 toward the center of rotation of the receiving seat 28. extend.

In addition, one end of the compression spring 405 is disposed on the mounting portion 409, and the other end of the compression spring 405 abuts against the receiving seat 28, and the direction of the force of the pressing spring 405 against the stopper 407 is opposite to the rotation direction of the receiving seat.

When the stopper 403 is in the first position under the urging force of the compression spring 405, the stopper projection 407 abuts against the abutting portion 417 of the slider 33. When the stopper 403 is pivoted from the first position to the second position, the stopper protrusion 407 is disengaged from the abutting portion 417 of the slider 33 against the urging force of the compression spring 405, so that the slider 33 is at the biasing member 54. Under the action of the radial movement relative to the receiving seat 28, the slider 33 is moved in a direction extending out of the receiving seat 28, thereby pushing the wire reel 32 (see FIG. 32) to rotate at a certain angle with respect to the receiving seat 28 to realize the payout.

As shown in FIG. 33, when the grass cutter 400 is in the non-working state, the stopper 403 is at the compression spring 405. The force is in a first position that restricts the radial movement of the slider 33 relative to the receptacle 28. At this time, the abutting portion 417 of the slider 33 is kept in contact with the stopper projection 407 of the stopper 403 by the urging force of the biasing member 54.

As shown in FIG. 34, the main switch is activated, and at this time, the stopper 403 is still in the first position restricting the radial movement of the slider 33 with respect to the housing 28 by the action of the compression spring 405. When the slider 33 rotates with the holder 28, a centrifugal force is generated to the slider 33, and the centrifugal force direction is opposite to the biasing direction of the slider by the biasing member 54 at this time. Therefore, the slider 33 overcomes the urging force of the biasing member 54 under the action of the centrifugal force, away from the rotation axis of the accommodating seat 28, and has a certain gap with the stopper 403. However, the stopper 403 restricts the radial movement of the slider 33 with respect to the housing seat 28 in a direction extending beyond the outer peripheral portion of the housing seat 28. The reel 32 (see Fig. 32) is kept relatively stationary with the holder 28, and the lawn mower 400 cannot perform the payout. Thereby avoiding the loss of the grass line.

As shown in FIG. 35, when the pay-off electronic switch (not shown) is activated, the rotation speed of the accommodating seat 28 is rapidly lowered, so that the accommodating seat 28 has a certain acceleration, and the acceleration direction is opposite to the rotation direction of the accommodating seat 28. Due to the inertia of the stopper 403, the stopper 403 has a tendency to maintain the original motion state, that is, the stopper 403 has a certain inertial force and rotates in the opposite direction of the acceleration under the action of the inertial force. . Specifically, while the rotation speed of the receiving seat 28 is rapidly decreased, the inertial force of the stopper 403 is greater than the force of the compression spring 405, so that the stopper 403 overcomes the force of the compression spring 405 under the action of the inertial force, and The receptacle 28 is pivoted from the first position to the second position. At this time, the stopper protrusion 407 of the stopper 403 is disengaged from the abutting portion 417 of the slider 33, and since the stopper of the stopper 403 is not provided, at the same time, since the rotation speed of the holder 28 is greatly lowered, the slider 33 is greatly lowered. The centrifugal force is smaller than the urging force of the biasing member 54. Therefore, the slider 33 moves radially against the receiving seat 28 against the centrifugal force by the biasing member 54, and moves the slider 33 in the direction of extending out of the receiving seat 28. Thereby, the wire reel 32 (see FIG. 32) is rotated by a certain angle with respect to the receiving seat 28 to realize the payout. In this way, the line electronic switch can be selected to start the line release according to the need, thereby avoiding the waste of the grass line.

Referring again to Fig. 34, when the payout electronic switch is released, the centrifugal force of the slider 33 is greater than the biasing force of the biasing member 54 due to the rapid increase in the rotational speed of the receptacle 28. At this time, the slider 33 overcomes the urging force of the biasing member 54 under the action of the centrifugal force, and moves radially relative to the accommodating seat 28 in the direction of retracting the outer peripheral portion of the accommodating seat 28, thereby pushing the reel 32 to rotate relative to the accommodating seat 28. At a certain angle, a speed difference is generated between the reel 32 and the receiving base 28 to realize the payout. Wherein, the radial movement of the slider 33 pushes the movement of the reel relative to the receiving seat 28 to be the same as that of the first embodiment, and details are not described in detail.

In addition, when the payout electronic switch is released, the rotation speed of the receiving seat 28 is rapidly increased to make the receiving seat There is a certain acceleration, and the direction of the acceleration is the rotation direction of the housing 28, and the direction of the inertial force of the slider 33 is opposite to the direction of the above acceleration. Therefore, at this time, the stopper 403 is pivoted from the second position to the first position by its inertia and the resetting means 405, at which time the abutting portion 417 of the slider 33 is retained with the stopper projection of the stopper 403. 407 is adjunctive. Thereby, the radial movement of the slider 33 with respect to the housing 28 is restricted, at which time the lawnmower 400 is in a normal working state.

In summary, you can choose to activate the pay-off electronic switch to make the line as needed, avoiding the waste of the grass line. In addition, the payout can also be performed when the payout electronic switch is released, thereby improving the payout efficiency.

Referring again to FIG. 33, when the main switch is operated to shut down the lawnmower 400, the centrifugal force of the slider 33 disappears, and the slider 33 is radially outward from the biasing member 54 under the action of the biasing member 54. After moving a certain distance, it is stopped by the stopper 403. At the same time, when the shutdown is performed, since the inertial force of the stopper 403 is insufficient to overcome the urging force of the compression spring 405, the stopper 403 is held in the first position by the compression spring 405, and the slider 33 is responsive thereto. The abutment portion 417 remains in contact with the stop projection 407 of the stopper 403. Thereby, the radial movement of the slider 33 with respect to the housing 28 is restricted, and at this time, the lawnmower 400 cannot perform the payout. Therefore, when the main switch is operated to shut down the lawnmower 400, the payout cannot be performed, and the loss of the grass line is avoided.

36 to 38 show a lawnmower according to an eighth embodiment of the present invention.

The lawnmower has a similar structure to the lawnmower 400 of the seventh embodiment, and the difference is the stopping device in the pay-off mechanism, which will be described in detail below. For the convenience of description, the same structure is denoted by the same reference numeral. .

As shown in FIG. 36, the housing 28 is provided with a cover 30, and the inner cavity formed by the housing 28 and the cover 30 is provided with a reel 32. A slider 33 is disposed between the housing 28 and the reel 32. The slider 33 and the holder 28 are circumferentially fixed and radially movable, and a biasing member 54 is disposed between the slider 33 and the housing 28.

As in the seventh embodiment, in the present embodiment, when the main switch (not shown) controls the rotation of the main motor 26, the reel 32 is in the first state, and at this time, the reel 32 is stationary with respect to the housing 28, that is, with the housing. 28 synchronous rotation, at this time the grass machine 400 can not put the line. In the second state, the pay-off electronic switch (not shown) controls the relative movement of the reel 32 and the receiving seat 28 to cause a relative speed difference between the reel 32 and the receiving base 28. Thereby achieving the release line.

The stop device 420 includes a stop member 422 pivotally disposed on the receiving seat 28. When the stop member 422 is in the first position, the stop member 422 stops the slider 33 to limit the radial direction of the slider 33 relative to the receiving seat 28. The movement is made such that the reel 32 is stationary with respect to the holder 28, and the payout cannot be performed. When the stopper 422 is pivoted to the second position, the slider 33 is radially movable relative to the receiving seat 28, so that the reel 32 can be pushed relative to the receiving The receptacle 28 is rotated at a certain angle to achieve the payout.

In this embodiment, the pivot axis of the stopper 422 and the axis of rotation of the receiving seat 28 are parallel to each other.

As shown in FIGS. 36 to 38, specifically, the stopper 422 has a stopper projection 424, and the slider 33 has an abutting portion 426. When the stopper 422 is in the first position, the stopper protrusion 424 of the stopper 422 abuts against the abutting portion 426 of the slider 33, and the stopper 422 stops the slider 33 to restrict the slider 33 relative to the receiving seat. The radial movement of 28. When the stopper 422 is in the second position, the stopper projection 424 of the stopper 422 is disengaged from the abutting portion 426 of the slider 33, and the slider 33 is radially movable relative to the housing 28.

As shown in FIG. 37, when the lawnmower 400 is in the non-operating state, the abutting portion 426 of the slider 33 remains in contact with the stopper projection 424 of the stopper 422 under the action of the biasing force of the biasing member 54. .

As shown in FIG. 38, the main switch is activated, and the stopper 403 is rotated in synchronization with the housing 28. Further, when the slider 33 rotates with the holder 28, centrifugal force is generated to the slider 33, and the centrifugal force direction is opposite to the biasing direction of the slider by the biasing member 54 at this time. Therefore, the slider 33 overcomes the urging force of the biasing member 54 under the action of the centrifugal force, and is away from the rotation axis of the accommodating seat 28, and the abutting portion 426 of the slider 33 and the stopper projection 424 of the stopper 422 have a certain relationship. gap. At this time, the reel 32 (see Fig. 32) remains relatively stationary with the holder 28, and the lawn mower 400 cannot perform the payout. Thereby avoiding the loss of the grass line.

When the stop 422 is in the first position, the center of gravity 428 of the stop 422, the center of rotation 430 is substantially in line with the center of rotation 432 of the receptacle.

As shown in FIG. 39, when the pay-off electronic switch (not shown) is activated, since the rotational speed of the accommodating seat 28 is rapidly lowered, the acceleration of the accommodating seat 28 reaches a certain value, and the acceleration direction is opposite to the rotational direction of the accommodating seat 28, Due to the inertia of the stopper 422, the stopper 422 has a tendency to maintain the original motion state, that is, the stopper 422 has a certain inertial force, and in the opposite direction of the acceleration under the action of the inertial force. Rotating, and the angle at which the stop member 422 is rotated relative to the receptacle 28 is sufficient to disengage the stop projection 424 from the abutment portion 426 of the slider 33 such that the stop member 422 pivots from the first position to the second position. Specifically, while the rotational speed of the receiving seat 28 is rapidly lowered, the stopper 422 is pivoted relative to the receiving seat 28 from the first position to the second position. At this time, the stopper protrusion 422 of the stopper 403 is disengaged from the abutting portion 426 of the slider 33, and since the stopper of the stopper 403 is not provided, at the same time, since the rotation speed of the holder 28 is greatly lowered, the slider 33 is greatly reduced. The centrifugal force is less than the force of the biasing member 54. Therefore, the slider 33 is moved radially relative to the housing 28 against the centrifugal force by the biasing member 54, and the slider 33 is moved in a direction extending out of the housing 28, thereby pushing the spool 32 (see FIG. 32) relative to each other. The receiving seat 28 is rotated at a certain angle to realize the payout. In this way, the line electronic switch can be selected to start the line release according to the need, thereby avoiding the waste of the grass line.

Referring again to Fig. 38, when the payout electronic switch is released, the centrifugal force of the slider 33 is greater than the biasing force of the biasing member 54 due to the rapid increase in the rotational speed of the receptacle 28. At this time, the slider 33 overcomes the urging force of the biasing member 54 under the action of the centrifugal force, and moves radially relative to the accommodating seat 28 in the direction of retracting the outer peripheral portion of the accommodating seat 28, thereby pushing the reel 32 to rotate relative to the accommodating seat 28. At a certain angle, a speed difference is generated between the reel 32 and the receiving base 28 to realize the payout. Wherein, the radial movement of the slider 33 pushes the movement of the reel relative to the receiving seat 28 to be the same as that of the first embodiment, and details are not described in detail.

In addition, when the payout electronic switch is released, the stopper 422 is rotated relative to the receiving seat 28 due to the centrifugal force, and finally the center of gravity 428 of the stopper 422 is kept at the furthest distance from the center of rotation 432 of the receiving seat 28, at this time. The center of gravity of the stopper 422 has its center of rotation 430 and the center of rotation 432 of the receiving seat 28, thereby pivoting the stopper 422 from the second position to the first position, at which time the abutting portion 426 of the slider 33 remains The stop projections 424 of the blocking member 422 abut. Thereby, the radial movement of the slider 33 with respect to the housing 28 is restricted, at which time the lawnmower 400 is in a normal working state.

In summary, in this embodiment, the pay-off electronic switch can be selected to start the pay-off according to the need, thereby avoiding the waste of the grass-line. In addition, the payout can also be performed when the payout electronic switch is released, thereby improving the payout efficiency.

Referring again to FIG. 37, when the main switch is operated to shut down the lawnmower 400, the centrifugal force of the slider 33 disappears, and the slider 33 is radially outward in the direction away from the biasing member 54 by the biasing force of the biasing member 54. After moving a certain distance, it is stopped by the stopper 422. At the same time, when the shutdown is performed, the angle of rotation of the stopper 422 is small, which is insufficient to disengage the stopper protrusion 424 from the abutting portion 426. Therefore, the abutting portion 426 of the slider 33 is still at this time. It abuts against the stop projection 424 of the stopper 422. Thereby, the radial movement of the slider 33 with respect to the housing 28 is restricted, and at this time, the lawnmower 400 cannot perform the payout. Therefore, when the main switch is operated to shut down the lawnmower 400, the payout can not be performed, and the loss of the grass line is avoided.

Referring to FIG. 40 to FIG. 42 , in the ninth example of the lawnmower of the present invention, the structure of the grass head is the same as that of the fourth embodiment, and details are not described herein. The difference is that the control switch is a main switch, and the control device includes a control circuit electrically connected to the main motor 26, and the main switch controls the control circuit to change the rotational speed of the main motor 26 during operation. In the present embodiment, the payout speed V1 is smaller than the operating speed V0. The control circuit preferably employs a brake switch circuit E3.

Referring to FIG. 40, the power source P supplies power to the main switch K1, and the main switch K1 is electrically connected to the main motor M. the Lord The switch K1 is a single pole double throw switch, and the single pole double throw switch has an NC end and a NO end, and the NC end and a NO end are selectively in a closed position.

Referring to Fig. 40, in the normal operation of the lawnmower, the NC end of the main switch is in the closed position, and the main motor M is operated at full speed.

Referring to Fig. 41, when the line is released, the NC terminal of the main switch is opened, the NO end is in the closed position, the main motor M is short-circuited, and the main motor M speed is reduced to zero.

Referring again to FIG. 40, the NO end of the payout electronic switch is released, the NC end of the payout electronic switch is in the closed position, and the main motor M resumes full speed operation.

Referring to Fig. 42, the variation of the operating speed V of the main motor M with time T is illustrated. Under normal working conditions, the working speed V0 of the main motor M of the lawnmower is between 5,000 and 10,000 rpm, and the preferred operating speed V0 is 8,500 rpm. The take-up speed V1 is 0 rpm, that is, the take-up speed V1 of the main motor M is reduced to zero. On the time axis T, wherein during the time period t1, the operating speed of the main motor M is reduced to zero by the operating speed V0, the t1 period is less than 1 second; the zero speed is maintained for the t2 period, the t2 period is not fixed because The operator needs to release the main switch NO end and then close the main switch NC end; in the t3 time period, after the main switch NC end is closed, the running speed of the main motor M is restored from zero to the working speed V0, and the t3 time period is also less than 1 second.

The operation of the pay-off mechanism of the ninth embodiment will be described below. Closing the NC end of the main switch K1, rotating the reel 32 and the receiving base 28 synchronously, closing the NO end of the main switch K1, the main motor M is decelerated to zero, and a speed difference is generated between the reel 32 and the receiving seat 28; When the NO end of the switch is closed, the NC end of the main switch is closed, the rotation speed of the main motor is resumed, and the reel and the receiving seat resume synchronous rotation.

The ninth embodiment and the four-to-sixth embodiment of the pay-off operation are similar, and all of them are placed in the normal work, that is, the cutting control can be performed without interrupting the cutting work, and the operation is convenient. The structure is simple and reliable.

As shown in FIG. 43 and FIG. 44, the lawnmower 1200 of the tenth embodiment includes an extension rod assembly 1015, a grass head 1022 disposed at one end of the extension rod assembly 1015, and is disposed on the extension rod assembly 1015 and the grass head 1022. a handle disposed at a distance, a motor 1026 that drives the grass head 1022 to rotate about the axis of rotation, and a switch 1027 that controls the motor 1026. The grass head 1022 includes a wire reel 1032 for setting the grass line 1034, and in this embodiment, The grass head 1022 further includes a receiving seat 1028 and a receiving seat 1028. The mating cover 1030 and the reel 1032 are disposed between the receiving seat 1028 and the cover 1030, and the grassing line 1034 is wound around the bobbin 1032 and protrudes from the receiving seat 1028.

When the lawnmower 1200 is in operation, the grass head 1022 is driven to rotate by the motor 1026 to drive the grass line 1034 to rotate to form a cutting surface. The user lifts the lawnmower 1200 through the handle to make the grassing line 1034 cut grass along the cutting surface formed by the rotation.

For convenience of description, the "axial", "circumferential", and other orientation-related descriptions of the present embodiment are all referenced to the axis of rotation of the grass head 1022. For example, "axial direction" is an extending direction along the rotation axis of the grass head 1022; "circumferential direction" is a direction around the rotation axis of the grass head 1022.

In this embodiment, the motor 1026 driving the grass head 1022 is disposed coaxially with the grass head 1022. Preferably, the output shaft of the motor 1026 directly drives the grass head 1022, that is, the rotating shaft 1036 of the grass head 1022 is the motor 1026. The output shaft is simple and compact. It will be appreciated by those skilled in the art that the motor 1026 can also be disposed anywhere else of the extension rod assembly 1015 and can be rotated by a particular transmission mechanism to drive the grass head 1022.

In this embodiment, the end of the extension rod assembly 1015 away from the grass head 1022 is provided with a power source, specifically a battery pack 1038, preferably a lithium battery pack. Thus, the power source and the grass head 1022 are respectively disposed at two ends of the extension rod assembly 1015, and the handle is located at a position of the middle portion of the extension rod assembly 1015 relatively close to the power source, so that the center of gravity of the entire lawn mower 1200 is reasonable, and the operator passes When the handle lifts the grass 1200, it can be more labor-saving.

As shown in FIG. 43 and FIG. 44, the lawnmower 1200 further includes a manual pay-off mechanism including an operating member 1040 disposed independently of the switch 1027, a transmission member 1041 controlled by the operating member 1040, and driven by the transmission member 1041. The drive unit 1042 that drives the grass line 1034 is released by the drive reel 1032.

In this embodiment, the operating member 1040 is disposed adjacent to the grip portion of the handle. The grip of the handle refers to the portion of the handle that the operator holds by hand. The operating member is disposed adjacent to the grip portion of the handle, and the operator can control the operating member 1040 while holding the handle to release the line without interrupting the work of the lawnmower 1200, and the operation is convenient. Of course, the operating member can also be placed at other locations of the lawnmower 1200.

Since the manual pay-off mechanism is controlled by the operating member 1040 that is independent of the switch 1027, waste of pay-off is avoided every time the power is turned on, thereby reducing the loss of the grass line.

Preferably, the transmission member 1041 is a flexible transmission shaft 1041. Specifically, the transmission member 1041 is a steel wire. Preferably, the flexible drive shaft 1041 is substantially received within the extension rod assembly 1015 to protect the flexible drive shaft 1041, thereby extending the life of the flexible drive shaft 1041. The fact that the flexible transmission shaft 1041 is substantially received in the extension rod assembly 1015 means that most of the flexible transmission shaft 1041 is housed in the extension rod assembly 1015. At least some of the drive shafts are housed in the casing near the grass head. In addition, a portion of the flexible drive shaft coupled to the operating member may be exposed outside of the extension rod assembly. Of course, the portion of the flexible transmission shaft may also be received in the auxiliary handle and the extension rod assembly. Those skilled in the art will appreciate that other transmission members, such as other wires, plastic strips or braided wires, may also be used. Any technical solutions similar to the present embodiment should be covered within the scope of the present invention.

In this embodiment, the handle includes a main handle 1023 and an auxiliary handle 1024 disposed at a distance, the switch 1027 is disposed on the main handle 1023, and the operating member 1040 is also disposed on the main handle 1023. With this arrangement, the operator can control the grass hopper 1200 to perform grassing work and paying off by operating the switch 1027 and the operating member 1040 on the main handle 1023. Of course, the switch 1027 and the operating member 1040 can also be disposed on the main handle 1023 and the auxiliary handle 1024, respectively, such that the operations of the switch 1027 and the operating member 1040 do not interfere with each other. When the operator controls the lawnmower 1200 through the auxiliary handle 1024 to operate the wire reel 1032, it is only necessary to control the operating member 1040 on the auxiliary handle 1024 without changing the grass 1200. The working state will not interrupt the grass-cutting work of the lawnmower 1200, and the operation is convenient. This advantage is more obvious when the lawnmower 1200 is in the trimming state. Of course, the operating member 1040 is disposed at other positions of the lawnmower 1200, such as at a position near the main handle or the auxiliary handle on the extension rod assembly 1015, or at a distance from the switch on the main handle, as long as the operator It is also possible to control the operating member while lifting the lawn mower 1200 by the handle to make it grass. Any technical solutions similar to the present embodiment should be covered within the scope of the present invention.

The drive unit 1042 includes a lever 1043 that is coupled to the transmission member 1041 and controlled by the operating member 1040. The lever 1043 drives the spool 1032 to move axially along the axis of rotation of the grass head 1022 between the first state and the second state. In the first state, the reel 1032 rotates in synchronization with the accommodating seat 1028; in the second state, a difference in rotational speed is generated between the reel 1032 and the accommodating seat 1028.

In the first state, the reel 1032 rotates synchronously with the receiving base 1028, and the grassing line 1034 wound on the bobbin 1032 rotates synchronously with the receiving seat 1028, and the portion of the grassing line 1034 extending beyond the receiving seat 1028 can be used for grassing. Trim the lawn.

In the second state, the reel 1032 is disengaged from the receiving seat 1028, and the centrifugal force rotating by the grassing line 1034 drives the reel 1032 to move relative to the receiving seat 1028, thereby generating a rotational speed difference, and the centrifugal force of the grassing line 1034 can pull the direction. A portion of the outer shovel is used to achieve the payout, that is, the longer free end of the grassing line 1034 extends out of the receptacle 1028, so that the grass hopper 1200 has a larger grassing radius.

The extension rod assembly 1015 includes a first extension rod 1046 extending longitudinally and a second extension rod 1048 movably coupled to the first extension rod 1046. The handle is disposed on the first extension rod 1046, and the grass head 1022 is disposed at the The two extension rods 1048, the first extension rod 1046 and the second extension rod 1048 are each provided with a lumen, and the transmission member 1041 is disposed substantially in the inner cavity of the first extension rod 1046 and the second extension rod 1048. As such, an active connection is made between the first extension rod 1046 and the second extension rod 1048. When transporting and storing the lawnmower 1200, the second extension rod 1048 can be moved relative to the first extension rod 1046 to reduce grass clipping. The size of the machine greatly reduces the packaging and storage volume of the lawnmower 1200, reducing packaging, transportation costs and saving storage space.

With further reference to FIGS. 45-48, preferably, the first extension rod 1046 and the second extension rod 1048 have a first position that mates with each other and a second position that is disengaged from each other. Thus, when the lawnmower is used, the first extension rod 1046 and the second extension rod 1048 are mated with each other. At this time, the operating member 1040 is operated, and the transmission member 1041 drives the driving device 1042 to drive the reel to release the grassing line. Thereby, the operator is improved in operating height, and the operation man-machine is greatly improved. When the grass cutter is to be transported and stored, the first extension rod 1046 and the second extension rod 1048 are disengaged from each other, so that the first extension rod 1046 and the second extension rod 1048 can be overlapped, thereby greatly reducing the grass. The packaging and storage volume of the machine, which reduces packaging, transportation costs and saves storage space.

Further, the first extension rod 1046 and the second extension rod 1048 are screwed together, and the arrangement is simple, and the cost is low. An external thread 1050 is disposed on the first extension rod 1046, and an internal thread 1052 engageable with the external thread 1050 is disposed on the second extension rod 1048. The internal thread 1052 is mated with the external thread 1050 to connect the first extension rod 1046 and the second extension rod 1048 together; the internal thread 1052 is disengaged from the external thread 1050 to cause the first extension rod 1046 and the second extension rod 1048 Disengage from each other. Correspondingly, the internal thread 1052 can also be disposed on the first extension rod 1046, and the external thread 1050 that can be mated with the internal thread 1052 is disposed on the second extension rod 1048.

The first extension rod 1046 is provided with an electrode sheet 1047, and the second extension rod 1048 is provided with an electric wire 1049. When the first extension rod 1046 is mated with the second extension rod 1048, the electrode sheet 1047 is electrically connected to the electric wire 1049. Thereby, the electrical connection between the battery pack 1038 and the motor 1026 is realized, and the grassing work is performed.

For ease of manufacture and installation, a first sleeve 1054 is fixedly disposed on the first extension rod 1046, and an external thread 1050 is disposed on the first sleeve 1054. A second sleeve 1056 is rotatably disposed on the second extension rod 1048, and the internal thread 1052 is disposed inside the second sleeve 1056. Thus, the first extension rod 1046 and the second extension rod 1048 can be joined together by simply rotating the second sleeve to rotate relative to the second extension rod 1048 while mating the internal thread 1052 with the external thread 1050. The second extension rod 1048 is not rotated relative to the first extension rod 1046, thereby facilitating installation and labor saving.

The transmission member 1041 includes a first transmission portion 1057 and a second transmission portion 1058 movably disposed relative to the first transmission portion 1057. When the first extension rod 1046 and the second extension rod 1048 are mated with each other, the first transmission portion The portion 1057 and the second transmission portion 1058 are coupled to each other. When the first extension rod 1046 and the second extension rod 1048 are disengaged from each other, the first transmission portion 1057 and the second transmission portion 1058 are disengaged from each other. In this way, when the first extension rod 1046 and the second extension rod 1048 are mated, when the first transmission portion 1057 and the second transmission portion 1058 are mated with each other, the lawn mower can perform grass-grazing work and can operate the operation member 1040 to pass The transmission member drives the driving device 1042 to drive the reel 1032 to release the grassing line (see Fig. 44). When the first extension rod 1046 and the second extension rod 1048 are disengaged from each other, when the first transmission portion 1057 and the second transmission portion 1058 are disengaged from each other, it is convenient to store and transport the lawn mower.

The manual pay-off mechanism further includes a mating device disposed between the first transmission portion 1057 and the second transmission portion 1058. The mating device includes a first fit disposed in the first extension rod 1046 and connected to the first transmission portion 1057. The first sliding member 1062 is disposed in the second extension rod 1048 and connected to the second transmission portion 1058. The first sliding member 1062 can be mated or disengaged from the first adapter member 1060.

One end of the first transmission portion 1057 is mated with the operating member 1040 (see FIG. 44), and the other end is mated with the first adapter member 1060. The second transmission portion 1058 has one end mated with the driving device 1042 (see FIG. 44) and the other end mated with the first sliding member 1062.

In the present embodiment, the first adapter member 1060 is pivotable relative to the first extension rod 1046 to pivot between a position that is mated or disengaged from the first slider member 1062. Of course, the first adapter 1060 can also be disposed to move relative to the first extension rod 1046 as long as it can be engaged or disengaged from the first slider 1062.

The first sliding member 1062 is movably disposed in the second extending rod 1048. One end of the second transmission portion 1058 is fixedly coupled to the first sliding member 1062, and the other end of the second transmission portion 1058 is coupled to the driving device 1042.

The first adapter 1060 includes a first end 1064 that mates with the first transmission portion 1057 of the transmission member and a second end 1066 opposite the first end 1064. The second end 1066 has a first raised portion 1068, the first sliding portion The member 1062 has a first stop portion 1070 that is operatively stopped or disengaged by the first stop portion 1070 to mate or disengage the first transmission portion 1057 from the second transmission portion 1058. .

The mating device further includes a first actuating device disposed on the first extension rod 1046 for engaging the first adapter member 1060 with the first slider member 1062. The first actuating device includes a first annular seat body 1072 fixedly disposed in the first extension rod 1046. The first annular seat body 1072 includes a first portion 1074 and a second portion 1076 having an inner diameter smaller than the first portion 1074. When the adapter 1060 is moved from the first portion 1074 to the second portion 1076, the second portion 1076 causes the first adapter 1060 to mate with the first slider 1062. Thereby the first transmission portion 1057 and the second transmission portion 1058 are coupled together.

In this embodiment, after the first extension rod 1046 and the second extension rod 1048 are mated, the operation member 1040 needs to be operated to pull the first transmission portion 1057 to connect the first transmission portion 1057 and the second transmission portion 1058 together. As shown in FIG. 46 and FIG. 47, specifically, the operating member 1040 (see FIG. 44) is pulled to cause the first transmission portion 1057 to drive the first adapter member 1060 from the first portion 1074 to the second portion 1076, due to the second The inner diameter of the portion 1076 is smaller than the inner diameter of the first portion 1074, thereby causing the first adapter 1060 to pivot toward the extended axis adjacent the first extension rod 1046, and finally, the first projection 1068 of the first adapter 1060 and the first The first stop 1070 of the slider 1062 mates to connect the first transmission portion 1057 with the second transmission portion 1058. As shown in FIG. 48, at this time, the first transmission portion 1057 is continuously pulled, and the second transmission portion 1058 is moved by a certain distance H1 with respect to the second extension rod 1048, so that the second transmission portion 1058 drives the driving device 1042 to drive the reel. 1032 releases the grass line (see Figure 44).

Further, the electrode sheet 1047 is disposed on the first annular seat body 1072, so that the grass cutter is compact in structure.

The mating device further includes a first retaining device disposed between the first adapter member 1060 and the first extension rod 1046, the first retaining device for urging the first adapter member 1060 to disengage from the first slider member 1062. In this way, repeated fitting or disengaging between the first transmission portion 1057 and the second transmission portion 1058 can be realized, thereby further facilitating the user to store the grass cutter.

The first retaining device comprises an elastic unit. The elastic unit includes a first elastic member 1080, and preferably, the first elastic member is provided as a torsion spring 1080. Of course, the elastic unit can also be provided as a compression spring, a tension spring or the like.

Further, a first slider 1082 is disposed between the first adapter 1060 and the first extension rod 1046. The first slider 1082 is movable relative to the first extension rod 1046, and the first elastic member is disposed on the first mating The piece 1060 is between the first slider 1082. And the first transmission portion 1057 is connected to the first slider 1082.

As shown in FIG. 46, in the embodiment, the first connecting member 1060 includes a first mating portion 1086 and a second mating portion 1088. The first slider 1082 is provided with a first stud 1084. The first mating portion 1086 and the second mating portion 1088 are pivotally disposed on the first stud 1084. The torsion spring 1080 is also disposed on the first stud 1084, and one end of the torsion spring 1080 is mated with the first end. The portion 1086 abuts and the other end of the torsion spring 1080 abuts the second mating portion 1088. When the first transmission portion 1057 is in the free state, the torsion spring 1080 separates the first mating portion 1086 and the second mating portion 1088 by a large angle, thereby keeping the first mating member 1060 and the first slider 1062 disengaged. When the first transmission portion 1057 is pulled, the inner diameter of the second portion 1076 is smaller than the inner diameter of the first portion 1074, thereby causing the first mating portion 1086 and the second mating portion 1088 to overcome. The elastic force of the torsion spring 1080 is pivoted toward the extending axis of the first extension rod 1046. Finally, the first adapter member 1060 is mated with the first sliding member 1062, thereby the first transmission portion 1057 and the second transmission portion 1058. connected.

In addition, the first adapter 1060 may be configured to include only one mating portion. At this time, one end of the torsion spring 1080 abuts the mating portion, and the other end of the torsion spring 1080 abuts the first slider 1082 or the first extension rod 1046. by.

Of course, the first adapter 1060 can also be provided as an elastic member. When the first transmission portion 1057 is pulled, since the inner diameter of the second portion 1076 is smaller than the inner diameter of the first portion 1074, the first adapter 1060 is deformed toward the first extension. The extension axis of the rod 1046 pivots, and finally, the first adapter 1060 mates with the first slider 1062 to connect the first transmission portion 1057 with the second transmission portion 1058. When the first transmission portion 1057 is released to be in a free state, the first adapter member 1060 is restored to be deformed to be disengaged from the first slider 1062. Those skilled in the art will appreciate that other types of first adapters 1060 can be operatively coupled or disengaged from the first sliders 1062. Any technical solutions similar to the present embodiment should be covered within the scope of the present invention.

The mating device further includes a first tensioning device disposed between the first adapter member 1060 and the first extension rod 1046 for moving the first slider 1082 away from the operating member 1040 (see FIG. 44). Thereby the transmission member is effectively controlled to the drive unit 1042.

The first tensioning device includes a resilient member and the resilient member includes a second resilient member 1090. Preferably, the second elastic member 1090 is disposed as a compression spring 1090, and the compression spring 1090 is disposed along the longitudinal extension direction of the first extension rod 1046. Of course, the second elastic member 1090 can also be provided as an elastic member such as a torsion spring, a tension spring or a rubber member.

In this embodiment, the first annular seat body 1072 includes a cavity 1092 and a limiting portion 1094. The compression spring is disposed in the inner cavity 1092, and one end of the compression spring 1090 abuts against the limiting portion 1094, and the compression spring 1090 One end abuts against the first slider 1082. When the first transmission portion 1057 is in the free state, the compression spring 1090 pushes the first slider 1082 to move away from the operating member 1040 (see FIG. 44), thereby tensioning the first transmission portion 1057. When the operating member 1040 is operated, the first transmission portion 1057 can be pulled to drive the first slider 1082 to move toward the operating member 1040 against the urging force of the compression spring 1090, because the first adapter member 1060 and the first sliding member The 1062 is mated with each other to drive the second transmission portion 1058 to move relative to the second extension rod 1048, thereby driving the driving device 1042 to drive the reel 1032 to pay.

As shown in Figures 49 to 10, a second embodiment of the present invention. In this embodiment, the first extension rod 1096 and the second extension rod 1098 also have a first position that is mated with each other and a second position that is disengaged from each other. The first extension rod 1096 and the second extension rod 1098 are also the same. Threaded connection. The difference is the mating device between the first transmission portion 1100 and the second transmission portion 1102. The following is a detailed description of the above differences. Detailed introduction.

The first extension rod 1096 and the second extension rod 1098 are still threadedly connected, such that the first extension rod 1096 and the second extension rod 1098 have a first position that cooperates with each other and a second position that is disengaged from each other.

In order to facilitate the use, transportation and storage of the lawnmower, correspondingly, when the first extension rod 1096 and the second extension rod 1098 are mated, the first transmission portion 1100 and the second transmission portion 1102 cooperate with each other; the first extension rod 1096 and the first When the extension rod 1098 is disengaged, the first transmission portion 1100 and the second transmission portion 1102 are disengaged from each other.

The second adapter 1104 is still configured to be pivotable relative to the first extension rod 1096 to pivot between a position that is mated or disengaged from the second slider 1106. Of course, the second adapter 1104 can also be disposed to move relative to the first extension rod 1096 as long as it can be engaged or disengaged from the second slider 1106.

A second slider 1105 is movably disposed between the second adapter 1104 and the first extension rod 1096. One end of the first transmission portion 1100 is coupled to the operating member 1040 (see FIG. 44), and the other end of the first transmission portion 1100 It is connected to the second slider 1105. The second adapter 1104 is pivotally disposed on the second slider 1105.

The mating device also includes a second actuating device disposed on the first extension rod 1096 for engaging the second mating member 1104 with the second slider 1106.

In this embodiment, the second actuating device includes an actuating member 1108 disposed on the first extension rod 1096 and abutting the second mating member 1104, and a pushing member 1112 disposed on the second extension rod 1098, the first extension When the rod 1096 is mated with the second extension rod 1098, the pushing member 1112 pushes the movement of the actuator 1108, and the actuation member 1108 further causes the second fitting member 1104 to be mated with the second sliding member 1106, thereby the first transmission portion 1100. Connecting with the second transmission portion 1102, pulling the operating member 1040 (see FIG. 44), the first transmission portion 1100 and the second transmission portion 1102 are moved relative to the first extension rod 1096 and the second extension rod 1098, thereby driving The drive unit 1042 drives the reel 1032 to release the grass line 1034 (see Fig. 44).

Preferably, the actuating member 1108 is movably coupled to the first extension rod 1096. The direction of movement of the actuator 1108 is perpendicular to the direction of extension of the first extension rod 1096.

Preferably, the pushing member 1112 is coupled to the first extension rod 1096, thereby coupling the first extension rod 1096 and the second extension rod 1098 to each other, so that the lawn mower performs grassing. As such, the pusher 108 is used not only for the mating of the first extension rod 1096 and the second extension rod 1098. At the same time, the second adapter 1104 is matched with the second sliding member 1106, so that the grass cutter is compact and low in cost, and When the first extension rod 1096 and the second extension rod 1098 are mated to each other, the second adapter member 1104 and the second slider member 1106 can be mated with each other, so that the operation is very convenient and fast.

Specifically, the first extension rod 1096 is fixedly provided with a third sleeve 1110, and the third sleeve 1110 is provided with an external thread 1111. One end of the actuating member 1108 abuts against the second mating member 1104, and the other end of the actuating member 1108 extends through the third sleeve 1110. The pushing member 1112 is rotatably disposed on the second extending rod 1098. The pushing member 1112 includes a connecting end 1114 connected to the second extending rod 1098, an open end 1116 opposite to the connecting end 1114, and a connecting connecting end 1114 and an open end 1116. The intermediate portion 1118, the open end 1116 and the intermediate portion 1118 are each spaced apart from the second extension rod 1098, and the intermediate portion 1118 is provided with internal threads 1120. Thus, the third sleeve 1110 can be inserted between the pusher 1112 and the second extension rod 1098 while the pusher 1112 is rotated to mate the first extension rod 1096 and the second extension rod 1098 together.

In addition, when the third sleeve 1110 is inserted into the pushing member 1112, the pushing member 1112 will push the actuator 1108 to move in a direction perpendicular to the extending direction of the first extending rod 1096, because one end of the actuating member 1108 is mated with the second one. The member 1104 abuts, thereby causing the second adapter 1104 to pivot relative to the second slider 1105, ultimately causing the second projection on the second adapter 1104 and the second stop on the second slider 1106. The first transmission portion 1100 is coupled to the second transmission portion 1102. As shown in FIGS. 52 and 11, the first transmission portion 1100 can be pulled to move the second slider 1105 in a direction close to the operating member 1040 by a certain distance H2 by operating the operating member 1040, because the second adapter 1104 is The second sliding members 1106 are coupled to each other to drive the second transmission portion 1102 to move relative to the second extension rod 1098, thereby driving the driving device 1042 to drive the reel 1032 to pay.

The open end 1116 of the pushing member 1112 is provided with a slanting opening 1124. The inner diameter of the end surface of the slanting opening 1124 is larger than the inner diameter of the intermediate portion 1118, so that the actuating member 1108 is easily accessed during the mating of the third sleeve 1110 and the pushing member 1112. The pusher 1112 is pushed by the pusher 1112 to move the actuator 1108 in a direction perpendicular to the direction in which the first extension bar 1096 extends. And moving in a direction close to the axis of extension of the first extension rod 1096.

The mating device further includes a second retaining device disposed between the second adapter 1104 and the first extension rod 1096, the second retaining device for urging the second adapter 1104 and the second slider 1106 to disengage. The second holding device is disposed between the second slider 1105 and the second adapter 1104, the second holding device includes an elastic unit, and the elastic unit includes an elastic member 1126. Preferably, the elastic member 1126 is provided as a torsion spring 126. Of course, the elastic member 1126 can also be provided as a tension spring, a compression spring, a rubber member or the like.

The second slider 1105 is provided with a second protrusion 1127. The torsion spring 126 is sleeved on the second protrusion 1127, and one end of the torsion spring 126 abuts against the second slider 1105, and the other end of the torsion spring 126 abuts. For the second adapter 1104. As such, when the pusher 1112 and the third sleeve 1110 are unscrewed, the torsion spring 126 causes the second adapter 1104 to pivot to urge the actuator 1108 to move away from the axis of extension of the first extension rod 1096, ultimately The second adapter 1104 has no urging force of the actuating member 1108, and the second adapter 1104 is disengaged from the second slider 1106, so that the first transmission portion 1100 and the second transmission portion 1102 are disengaged. An extension rod 1096 and the second extension rod 1098 are also disengaged. In this way, the packaging and storage volume of the lawnmower is greatly reduced, which facilitates storage and transportation.

In this embodiment, the mating device also includes a second tensioning device for moving the second slider 1105 to move the second adapter 1104 away from the operating member 1040 (see FIG. 44), the second tensioning device The second adapter 1104 is disposed between the first extension rod 1096 and the first extension rod 1096. Further, a second annular seat body 1128 is fixedly disposed in the first extension rod 1096, and the tensioning device is disposed between the second annular seat body 1128 and the second slider 1105.

The second tensioning device comprises an elastic element comprising an elastic member 1129. Preferably, the elastic member 1129 is provided as a compression spring 129 which is arranged along the longitudinal extension of the first extension rod 1096. Of course, the elastic member 1129 may also be provided as a tension spring, a torsion spring, a rubber member or the like. In addition, the function and specific installation manner of the tensioning device are similar to those of the first embodiment, and will not be described in detail herein.

As shown in Figures 53 to 13, a third embodiment of the present invention. In this embodiment, the first extension rod 1130 is retractable relative to the second extension rod 1132, and the transmission member 1133 is also movably disposed in the inner cavity of the first extension rod 1130 and the second extension rod 1132. Of course, the first extension rod 1130 and the second extension rod 1132 can also adopt other structural forms other than the telescopic connection structure, such as detachable.

A telescopic adjustment mechanism (not shown) is disposed between the first extension rod 1130 and the second extension rod 1132, and the telescopic adjustment mechanism is for adjusting a relative telescopic position between the first extension rod 1130 and the second extension rod 1132. As known to those skilled in the art, there are many different implementations of the telescopic adjustment mechanism, and details are not described herein again. Furthermore, a position locking mechanism (not shown) may be disposed between the first extension rod 1130 and the second extension rod 1132. When the first extension rod 1130 and the second extension rod 1132 are adjusted to the appropriate relative positions, the position is The locking mechanism locks it. Similarly, the position locking mechanism also has many different implementation manners, which will not be described in detail herein.

The manual take-up mechanism also includes a pulley assembly disposed within the extension rod assembly 1015 (see FIG. 43), the transmission member 1133 is disposed on the pulley assembly, and the pulley assembly is controlled by the operating member 1040 (see FIG. 44). Pulling the operating member 1040 causes the pulley assembly to drive the transmission member 1133 to move, thereby driving the driving device 1042 to drive the reel for discharging.

In this embodiment, the pulley assembly includes a fixed pulley 1134 fixed to the first extension rod 1130 and The movable pulley 1136 connected to the operating member 1040 can move the movable pulley 1136 in the direction of extending the first extending rod toward the operating member 1040. The movable pulley 1136 is closer to the operating member 1040 than the fixed pulley 1134. The transmission member 1133 The sleeve 1133 is disposed on the outer edge of the fixed pulley 1134 and the movable pulley 1136. The transmission member 1133 includes a fixed end 1140 fixedly coupled to the second extension rod 1132 and a movable end 1142 coupled to the driving device 1042 (see FIG. 44), and the fixed end 1140 is located Between the pulley 1134 and the movable pulley 1136. Of course, the pulley assembly may be provided with a plurality of fixed pulleys and the like in addition to only one fixed pulley and one movable pulley. As long as the first extension rod 1130 moves relative to the second extension rod 1132, it can always be tightened. The transmission member 1133 is sufficient.

When the movable pulley 1136 is in the free state, the first extension rod 1130 and the second extension rod 1132 are telescoped, and the distance between the movable pulley 1136 and the fixed pulley 1134 is kept constant.

The second extension rod 1132 is retracted with respect to the first extension rod 1130 as an example. As shown in FIG. 53, the movable pulley 1136 is in a free state, and the second extension rod 1132 is in an extended position relative to the first extension rod 1130. If the distance of the axial center of the movable pulley 1136 to the longitudinal extension of the first extension rod 1130 is X, the distance from the fixed end 1140 to the axial center of the fixed pulley 1134 along the longitudinal extension direction of the first extension rod 1130 Y, as shown in FIG. 54, the second extension rod 1132 is in a retracted position relative to the first extension rod 1130, and the second extension rod 1132 has a fixed end 1140 with respect to the fixed pulley 1134 fixedly disposed on the first extension rod 1130. Moving, the distance from the fixed end 1140 to the fixed pulley 1134 in the longitudinal extension direction of the first extension rod 1130 is Y+K, that is, the fixed end 1140 is elongated along the first extension rod 1130 with respect to the axis of the fixed pulley 1134. The moving distance in the extending direction is K, and the second extending rod 1132 is also retracted by a distance K from the first extending rod 1130, so that the transmission member 1133 is always in a tension state. Therefore, when transporting and storing the lawnmower, the second extension rod 1132 is retracted relative to the first extension rod 1130, and the transmission member 1133 is always in a tensioned state for convenient storage and transportation. Regardless of the second extension rod 1132 in any retracted or extended position relative to the first extension rod 1130, the transmission member 1133 is in a tensioned state, which is more convenient to operate, and the operator does not need to confirm the use or storage of the lawnmower, the second extension rod 1132 is relative to where the first extension rod 1130 should be moved.

The process of extending the second extension rod 1132 relative to the first extension rod 1130 is opposite to the above-described process, i.e., from the retracted position of FIG. 54 to the process of FIG. 53, during which the transmission member 1133 is still in tension. Therefore, when the movable pulley 1136 is pulled, the transmission member 1133 can drive the driving device 1042 to drive the reel 1032 to release the grassing line 1034 (see FIG. 44), thereby achieving manual winding.

The movable pulley 1136 is coupled to the operating member 1040 (see FIG. 44), and the movable pulley 1136 is movable along the longitudinal extension of the first extension rod 1130. When the operating member 1040 is operated, the movable pulley 1136 can be along the first The longitudinal extension of the extension rod 1130 and the movement away from the fixed pulley 1134, while driving the movable end 1142 of the transmission member 1133 to move toward the first extension rod 1130, and the movable end 1142 of the transmission member 1133 is also along the first The extension rod 1130 moves in the longitudinal extension direction. Specifically, if the movable pulley 1136 moves the distance L away from the fixed pulley 1134, the movable end 1142 of the transmission member 1133 can be moved by a distance 2L in the direction of approaching the first extension rod 1130. Thus, because the movable end 1142 is coupled to the driving device 1042 (see FIG. 43), the transmission member 1133 can drive the driving device 1042 to drive the reel 1032 to release the grassing line 1034 (see FIG. 43), thereby implementing manual unwinding.

Preferably, the diameter of the fixed pulley 1134 is smaller than the diameter of the movable pulley 1136. In this way, the space occupied by the manual pay-off mechanism can be greatly reduced, and the grass-cutting machine is compact.

One of the tangents 1146 of the outer edge between the fixed pulley 1134 and the movable pulley 1136 is parallel to the extending direction of the first extension rod 1130. Thus, when the second extension rod 1132 is expanded and contracted with respect to the first extension rod 1130, or when the movable pulley 1136 is pulled to manually lift the lawn mower, the transmission of the transmission member 1133 is smoother and less laborious.

As shown in FIG. 54, the manual pay-off mechanism further includes a resetting device 1148 disposed between the movable pulley 1136 and the first extension rod 1130. When the movable pulley 1136 is not operated, the distance between the movable pulley 1136 and the fixed pulley 1134 is always maintained at X. At this time, the position where the movable pulley 1136 is located with respect to the fixed pulley 1134 is defined as the initial position. With further reference to FIG. 55, when the movable pulley 1136 is operated to extend in the longitudinal direction of the first extension rod 1130 and to move away from the fixed pulley 1134 by a distance L, the distance between the movable pulley 1136 and the fixed pulley 1134 is X+. L At this time, the movable pulley 1136 is in the pay-off position, and then the movable pulley 1136 is released, and the movable pulley 1136 is reset by the reset device 1148 to the initial position as shown in FIG. Thus, the cord 1032 of the lawnmower can be repeatedly released to the grass line 1034 (see Fig. 44).

Further, the first extension rod 1130 is movably provided with a movable pulley bracket 1150. The movable pulley 1136 is disposed on the movable pulley bracket 1150, and the first extension rod 1130 is fixed with a limiting portion 1152. When the movable pulley 1136 is in the free state, the reset device 1148 returns the movable pulley 1136 to the initial position. At this time, one end of the movable pulley bracket 1150 is coupled to the limiting portion 1152, and the other end of the movable pulley bracket 1150 is coupled to the reset device 1148. The movable pulley bracket 1150 is connected to the operating member 1040. When the operating member 1040 is operated, the movable pulley bracket 1150 can be moved to move away from the limiting portion 1152 by the movable pulley bracket 1150, thereby pulling the transmission member 1133 to drive the driving device 1042 to drive the coil 1032. Release the grass line 1034 (see Figure 44).

In this embodiment, the movable pulley bracket 1150 is connected to the operating member 1040 through the control member 1154. Preferably, the control member 1154 is provided as a flexible member. Of course, it can also be set to other forms such as non-flexible parts. As long as the force can be transmitted to the movable pulley bracket 1150, the movable pulley bracket 1150 can be moved along the longitudinal extension direction of the first extension rod 1130.

The reset device 1148 includes an elastic member 1156. Preferably, the elastic member 1156 is provided as a compression spring 156 which is arranged along the longitudinal extension direction of the first extension rod 1130. Of course, the elastic member 1156 can also be provided as a tension spring, a torsion spring or a rubber member or the like.

One end of the compression spring 156 abuts against the first extension rod 1130, and the other end of the compression spring 156 abuts against the movable pulley bracket 1150. Further, a mounting seat 1158 is fixed in the first extension rod 1130, and the mounting seat 1158 has a cavity 1160 and an abutting portion 1162. The movable pulley bracket 1150 is movably disposed in the cavity 1160. The limiting portion 1152 is disposed on the mounting seat 1158. One end of the compression spring 156 abuts against the abutting portion 1162, and the movable pulley bracket 1150 is located between the compression spring 156 and the limiting portion 1152. between.

In this embodiment, the first extension rod 1096 and the second extension rod 1098 are always in the mating state, whether in the extended position or the retracted position, and the transmission member 1133 is always in tension and indirectly coupled with the operating member 1040. And with the driving device 1042 (see FIG. 44), so when the lawnmower is used, the second extension rod 1098 can be in the extended position relative to the first extension rod 1096, at which time the operating member 1040 can be operated to make the transmission member The movable end 1142 moves relative to the second extension rod 1098 in a direction close to the operating member 1040, thereby driving the driving device 1042 to drive the reel 1032 to release the grassing line 1034 (see FIG. 44); and when the second extension rod 1098 is opposite to the first When the extension rod 1096 is in the retracted position, the storage space and packaging volume of the lawn mower are greatly reduced. Therefore, the lawn mower can not only reduce the loss of the grass line, but also the packaging volume is small.

It will be appreciated by those skilled in the art that the present invention may have other implementations, but as long as the technical essence employed is the same or similar to the present invention, or any changes and substitutions made based on the present invention are in the present invention. Within the scope of protection.

Claims

A lawn mower comprising a longitudinally extending extension rod, a casing disposed at one end of the extension rod, a handle disposed on the extension rod and spaced apart from the casing, and coupled to the machine a grass head of the shell, driving a main motor that rotates around the axis of the grass head, and a main switch that controls the main motor, the grass head includes a receiving seat, a cover that is mated with the receiving seat, and is disposed in the receiving a reel between the seat and the cover, the reel having a first state of being relatively stationary with the receiving seat, wherein the lawnmower further comprises a pay-off mechanism, and the pay-off mechanism comprises an independent a pay-off electronic switch and a control device of the main switch, the pay-off electronic switch operatively electrically controlling the control device to cause the reel to be in a second state capable of generating a rotational speed difference between the housing and the receiving seat .
A lawnmower according to claim 1 wherein said control means includes a control circuit electrically coupled to the main motor, said control circuit for controlling the main motor between a normal operating speed and a line speed Conversion.
A lawnmower according to claim 2, wherein said control circuit is a PWM modulation circuit.
A lawnmower according to claim 2, wherein said pay-off speed is less than the working speed.
A lawnmower according to claim 2, wherein said control circuit is a brake switch circuit.
A lawnmower according to claim 2, wherein said pay-off speed is greater than the working speed.
The lawnmower according to claim 1, wherein said reel is in a first state when said main switch is activated, and said reel is in a second state when said pay-off electronic switch is activated.
The lawnmower according to claim 7, wherein a slider is disposed between the receiving seat and the wire reel, and the slider and the receiving seat are circumferentially fixed and radially movable. The take-up mechanism further includes a stop device disposed on the receiving seat, the stop device having a first position and a second position, wherein the stop device is in the first position, the stop The device limits radial movement of the slider relative to the receiving seat, and the slider is radially movable relative to the receiving seat when the stopping device is in the second position.
The lawnmower according to claim 8, wherein the stopping device comprises a stopper pivoted to the receiving seat, and in the first position, the stopping member stops the slider, In the two positions, the stop is disengaged from the slider.
The lawnmower according to claim 9, wherein when the payout electronic switch is activated, the stopper pivots from the first position to the first position relative to the receiving seat under the action of inertial force Two locations.
The lawnmower of claim 10 wherein said stop member pivots from a second position to a first position when said payoff electronic switch is released.
A lawnmower according to claim 9, wherein said stopping means comprises a resetting means provided between said stopper and said receiving seat, said resetting means for causing said stopper to be second The position is restored to the first position.
A lawnmower according to claim 9, wherein the pivot axis of the stop overlaps the axis of rotation of the receptacle.
The lawnmower of claim 9 wherein said stop member is in a first position that limits radial movement of said slider relative to said receiving seat when said main switch is activated.
A lawnmower according to claim 1, wherein said pay-off electronic switch is a single-pole double-throw switch, and the single-pole double-throw switch is selectively in a first closed position and a second closed position to activate said main switch , the reel rotates synchronously with the receiving seat, and the single-pole double-throw switch is in the first closed position; the single-pole double-throw switch is activated to switch the single-pole double-throw switch from the first closed position to the second closed position, so that the reel and the receiving A speed difference is generated between the seats; the single-pole double-throw switch is released, and the single-pole double-throw switch is restored from the second closed position to the first closed position, so that a speed difference is generated between the reel and the receiving seat, and after a preset time, the reel is The housing seat resumes synchronous rotation.
A method for paying a lawnmower, the lawnmower according to claim 1, the method for releasing the wire comprises the following steps: activating the payoff electronic switch to generate a speed difference between the wire reel and the receiving seat.
The method of paying for a lawnmower according to claim 16, the operating step further comprising releasing the payoff electronic switch.
The method of claim 16 or 17, wherein before the actuating electronic switch is activated, the main switch is activated to cause the main motor to drive the housing to rotate synchronously with the reel.
A method for paying for a lawnmower, the lawnmower according to claim 1, the method for releasing the wire comprises the following steps: starting the main switch to rotate the wire reel and the receiving seat synchronously; and starting the electric switch to make the wire reel A speed difference is generated between the reel and the accommodating seat. After the preset time, the reel and the accommodating seat resume synchronous rotation.