阅读说明：本技术 割草机及其转向操控方法 (Mower and steering control method thereof ) 是由 于万钊 韦群力 陈辉 于 2020-12-25 设计创作，主要内容包括：本发明提供了一种割草机及其转向操控方法,所述割草机包括主体部,所述主体部包括行走轮和电机,所述电机驱动所述行走轮行走；支撑部,所述支撑部连接在主体部上,供操作者双手握持；操作部,用以调节所述电机的转速和/或转向,所述操作部连接在所述支撑部上,且所述操作部被配置为在操作者握持所述支撑部时能够被操作。相较于现有技术,本发明结构简单且仅需手部进行小幅度动作即可操控割草机的前进/后退、转弯和零转向,有效地保持人体重心稳定与平衡,使得操控更加方便安全。(The invention provides a mower and a steering control method thereof, wherein the mower comprises a main body part, the main body part comprises a travelling wheel and a motor, and the motor drives the travelling wheel to travel; the supporting part is connected to the main body part and is held by two hands of an operator; an operating portion to adjust a rotational speed and/or a steering of the motor, the operating portion being connected to the support portion and configured to be operable when an operator grips the support portion. Compared with the prior art, the mower has a simple structure, can control the advancing/retreating, turning and zero steering of the mower only by performing small-amplitude actions by hands, effectively keeps the gravity center of a human body stable and balanced, and is more convenient and safer to control.)

1. A lawn mower, comprising:

the main body part comprises a travelling wheel and a motor, and the motor drives the travelling wheel to travel;

the supporting part is connected to the main body part and is held by two hands of an operator;

an operating portion to adjust a rotational speed and/or a steering of the motor, the operating portion being connected to the support portion and configured to be operable when an operator grips the support portion.

2. The mower of claim 1, wherein: the operation part is provided with a pair of detection pieces and connectors electrically connected with the detection pieces, and the detection pieces are used for sending out operation signals according to displacement generated by hand operation of an operator.

3. The mower of claim 2, wherein: the detection element is a potentiometer type sensor, can generate different displacements according to the amplitude of hand operation and output corresponding voltage values, and the displacements comprise linear displacements and/or angular displacements.

4. A lawnmower as claimed in claim 3, wherein: the mower is also provided with a controller, the controller is electrically connected with the operating part through the connector, and sends a control command to the mower according to an operating signal sent by the detection piece, and the control command comprises a forward/backward command, a turning command and a zero-steering command.

5. The mower of claim 4, wherein: the hand operation of the operator includes left and right hand equidirectional operation of the pair of operation portions and left and right hand operation of the pair of operation portions in opposite directions.

6. The mower of claim 5, wherein: the equidirectional operation comprises a clockwise operation moving from an initial position to a front end position and a counterclockwise operation moving from the initial position to a rear end position;

the reverse direction operations include a left-hand counterclockwise operation while a right-hand clockwise operation, and a left-hand clockwise operation while a right-hand counterclockwise operation.

7. The mower of claim 6, wherein: when the left hand and the right hand operate in the same direction and have the same amplitude, the control instruction is a forward/backward instruction;

when the left hand and the right hand operate in the same direction with different amplitudes, the control instruction is a turning instruction;

and when the left hand and the right hand operate in opposite directions with the same amplitude, the control command is a zero steering command.

8. The mower of claim 7, wherein: the pair of operation parts are respectively provided with a thumb clamping groove, and an operator can put fingers into the thumb clamping grooves and poke the thumb clamping grooves to perform clockwise operation or anticlockwise operation; the pair of operation parts are respectively provided with an elastic component which is used for resetting the thumb clamping groove to an initial position.

9. The mower of claim 8, wherein: the thumb clamping groove can rotate around the pair of operating parts and generate angular displacement, and the rotation angle of the thumb clamping groove relative to the initial position is-30 degrees.

10. The mower of claim 9, wherein: the supporting part comprises a first holding part and a second holding part, and the thumb clamping grooves are arranged on the first holding part and the second holding part in a mirror symmetry mode.

11. The mower of claim 10, wherein: the supporting part is an integrated component, the first holding part and the second holding part are horizontally inclined and arranged in a mirror symmetry mode, and an included angle of the connecting part of the first holding part and the second holding part is an obtuse angle.

12. The mower of claim 10, wherein: the supporting part is arranged in a split mode, the first holding part and the second holding part are vertically inclined and arranged in a mirror symmetry mode, and the first holding part and the second holding part are n-shaped.

13. The mower of claim 7, wherein: the pair of operation portions are provided at both ends of the support portion.

14. The mower of any one of claims 1 to 13, wherein: the pair of safety switches are used for controlling the on-off of an electromagnetic brake of the mower and are respectively in physical and electrical connection with the pair of operation parts, so that an operator can operate the pair of operation parts after pressing the pair of safety switches first, and the mower is controlled to complete corresponding actions.

15. A method for steering a lawnmower, comprising the steps of applying the lawnmower according to any one of claims 1 to 13, and essentially:

s1, when the left hand and the right hand both operate the steering control mechanism clockwise in the same amplitude, the control command is forward; when the left hand and the right hand both operate the steering control mechanism anticlockwise with the same amplitude, the control instruction is backward movement;

s2, when the left hand operates the steering control mechanism clockwise or anticlockwise, the right hand operates in any direction and the operation amplitude is smaller than that of the left hand, the control command is a front right turning command or a rear right turning command respectively; when the right hand operates the steering control mechanism clockwise or anticlockwise, the left hand operates in any direction and the operation amplitude is smaller than that of the right hand, the control instruction is a front left turning instruction or a rear left turning instruction respectively;

s3, when the left hand operates the steering control mechanism clockwise and the right hand operates the steering control mechanism anticlockwise with the same amplitude, the control instruction is a zero steering instruction; when the steering control mechanism is operated clockwise by the right hand and counterclockwise by the left hand with the same amplitude, the control command is a zero steering command.

Technical Field

The invention relates to a mower and a steering control method thereof, and belongs to the field of garden tools.

Background

At present, the electric-driven standing type zero-steering mower is gradually replacing the traditional gasoline-driven standing type zero-steering mower, and the control mode of the electric-driven standing type zero-steering mower is completely the same as that of the traditional gasoline-driven standing type zero-steering mower.

Because the operator is a standing type driving, the hands of the operator must always hold the handrails to maintain body balance, when the operator moves forwards and backwards to switch, the operator needs to change hands to hold different handrails before and after the operator can switch the direction of the operating lever, and when the operator turns a corner without turning, the operator needs to respectively operate the handrails left and right and operate the handrails reversely, which brings great inconvenience to the operator.

In view of the above, it is necessary to provide a lawn mower and a steering method thereof to solve the above problems.

Disclosure of Invention

The invention aims to provide a mower and a steering control method thereof, so that the control is more convenient and safer.

To achieve the above object, the present invention provides a lawnmower comprising: the main body part comprises a travelling wheel and a motor, and the motor drives the travelling wheel to travel; the supporting part is connected to the main body part and is held by two hands of an operator; an operating portion to adjust a rotational speed and/or a steering of the motor, the operating portion being connected to the support portion and configured to be operable when an operator grips the support portion.

As a further improvement of the present invention, the operation portion is provided with a pair of detection pieces for emitting an operation signal in accordance with a displacement generated by an operation of a hand of an operator, and connectors electrically connected to the detection pieces, respectively.

As a further improvement of the invention, the detection element is a potentiometer type sensor which can generate different displacements according to the amplitude of the hand operation and output corresponding voltage values, and the displacements comprise linear displacements and/or angular displacements.

As a further improvement of the present invention, the mower further comprises a controller electrically connected to the operating unit via the connector, and configured to issue control commands to the mower based on an operation signal issued by the detector, wherein the control commands include a forward/backward command, a turn command, and a zero turn command.

As a further improvement of the present invention, the hand operation by the operator includes operating the pair of operation portions with the left and right hands in the same direction and operating the pair of operation portions with the left and right hands in opposite directions.

As a further improvement of the present invention, the equidirectional operation includes a clockwise operation moving from the initial position to the front end position and a counterclockwise operation moving from the initial position to the rear end position;

the reverse direction operations include a left-hand counterclockwise operation while a right-hand clockwise operation, and a left-hand clockwise operation while a right-hand counterclockwise operation.

As a further improvement of the invention, when the left hand and the right hand operate in the same direction and with the same amplitude, the control command is a forward/backward command;

when the left hand and the right hand operate in the same direction with different amplitudes, the control instruction is a turning instruction;

and when the left hand and the right hand operate in opposite directions with the same amplitude, the control command is a zero steering command.

As a further improvement of the present invention, the pair of operation parts respectively have a thumb slot, and an operator can put fingers into the thumb slots and poke the thumb slots to perform clockwise operation or counterclockwise operation; the pair of operation parts are respectively provided with an elastic component which is used for resetting the thumb clamping groove to an initial position.

As a further improvement of the present invention, the thumb engaging groove is rotatable around the pair of operating portions and angularly displaces, and the rotation angle of the thumb engaging groove is-30 ° to-30 ° compared to the initial position.

As a further improvement of the present invention, the support portion includes a first holding portion and a second holding portion, and the thumb slots are arranged on the first holding portion and the second holding portion in a mirror symmetry manner.

As a further improvement of the present invention, the supporting portion is an integral member, the first holding portion and the second holding portion are horizontally inclined and arranged in mirror symmetry, and an included angle between the connecting portions of the first holding portion and the second holding portion is an obtuse angle.

As a further improvement of the present invention, the supporting portion is provided in a split manner, the first holding portion and the second holding portion are vertically inclined and arranged in a mirror symmetry manner, and the first holding portion and the second holding portion are n-shaped.

As a further improvement of the present invention, the pair of operation portions are provided at both ends of the support portion.

As a further improvement of the present invention, the present invention further includes a pair of safety switches, wherein the pair of safety switches are used for controlling the on/off of the electromagnetic brake of the mower, and are respectively physically and electrically connected to the pair of operation portions, so that an operator needs to press the pair of safety switches before operating the pair of operation portions, thereby operating the mower to complete corresponding actions.

In order to achieve the above object, the present invention further provides a steering control method for a lawn mower, which applies the lawn mower described above, and mainly includes the following steps:

s1, when the left hand and the right hand both operate the steering control mechanism clockwise in the same amplitude, the control command is forward; when the left hand and the right hand both operate the steering control mechanism anticlockwise with the same amplitude, the control instruction is backward movement;

s2, when the left hand operates the steering control mechanism clockwise or anticlockwise, the right hand operates in any direction and the operation amplitude is smaller than that of the left hand, the control command is a front right turning command or a rear right turning command respectively; when the right hand operates the steering control mechanism clockwise or anticlockwise, the left hand operates in any direction and the operation amplitude is smaller than that of the right hand, the control instruction is a front left turning instruction or a rear left turning instruction respectively;

s3, when the left hand operates the steering control mechanism clockwise and the right hand operates the steering control mechanism anticlockwise with the same amplitude, the control instruction is a zero steering instruction; when the steering control mechanism is operated clockwise by the right hand and counterclockwise by the left hand with the same amplitude, the control command is a zero steering command.

The invention has the beneficial effects that: the invention has simple structure, can control the advancing/retreating, turning and zero steering of the mower only by small-amplitude action of hands, effectively keeps the gravity center of the human body stable and balanced, and leads the control to be more convenient and safer.

Drawings

Fig. 1 is a structural view of a steering operation mechanism according to a first embodiment of the present invention applied to a lawnmower.

Fig. 2 is a sectional view showing a steering operation mechanism according to the present invention.

Fig. 3 is an exploded view of the steering control mechanism of the present invention.

Fig. 4 is a structural view of the first grip portion in the present invention.

Fig. 5 is a relationship diagram of the rotation angle of the thumb engaging groove in fig. 4 and the voltage value output by the detecting member.

Fig. 6 is a diagram showing the correspondence relationship between the voltage value output from the detection member and the rotational speed output value of the controller in fig. 5.

Fig. 7 is a circuit configuration diagram of a controller and other devices in the present invention.

Fig. 8 is an exploded view of a steering control mechanism according to a second embodiment of the present invention.

Fig. 9 is a schematic structural view of a steering control mechanism in a third embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The present invention discloses a steering mechanism 100 for use in a garden tool, which may be a lawn mower or other garden tool, and is not limited thereto or thereby. For clarity of description, the following description will take the steering control mechanism 100 as an example, and the specific structure of the steering control mechanism 100 will be described in detail.

As shown in fig. 1, the lawn mower includes a main body 30, an operation panel 40, and a pedal 50, wherein the main body 30 includes a road wheel 31 and a motor (not shown) for driving the road wheel 31 to travel. Specifically, a differential connected to the motor is provided in the mower for enabling the traveling wheels 31 on the left and right sides to roll at different rotational speeds. Of course, the traveling wheel 31 may have other structures, including but not limited to, a hub motor, etc., and is not limited herein.

The operation panel 40 and the pedal 50 are disposed at a rear end of the main body 30 of the lawn mower, and the steering control mechanism 100 is disposed on the operation panel 40 and electrically connected to a controller (not shown) of the lawn mower, so that an operator can stand on the pedal 50 to operate the steering control mechanism.

As shown in fig. 2 and 3, the steering control mechanism 100 includes a support portion 10 for holding by both hands of a user, the support portion 10 includes a first holding portion 11 and a second holding portion 12, the first holding portion 11 and the second holding portion 12 are respectively disposed on the left and right sides of the operation panel 40, and the first holding portion 11 and the second holding portion 12 are preferably mirror-symmetrical. Specifically, the support portion 10 is fixedly mounted on the operation panel 40 through a locking mechanism 13, and two ends of the support portion 10 are connected to the locking mechanism 13. The first holding part 11 and the second holding part 12 of the present embodiment are horizontally and obliquely arranged, so that an operator can hold the first holding part 11 and the second holding part 12 transversely with the left hand and the right hand, respectively, to keep the balance of the operator in the shaking of the mower, and the arrangement is more ergonomic.

In an embodiment of the present invention, the first holding portion 11 and the second holding portion 12 may be fixedly connected, that is, the first holding portion 11 and the second holding portion 12 may be an integral component, and an included angle formed at a connection position of the first holding portion 11 and the second holding portion 12 is an obtuse angle, so that the first holding portion 11 and the second holding portion 12 are integrally in an inverted V shape, which is convenient for being held by two hands. Specifically, the first holding portion 11 and the second holding portion 12 may be in the form of a support rod, and may be selected according to actual needs, and are not limited herein.

Specifically, the length of the first grip 11 and the second grip 12 for holding a hand is set to be N1, and the length of the first grip 11 and the second grip 12 in the horizontal direction is set to be N2, wherein N1 is greater than or equal to 140mm, and N2 is between 225 mm and 450 mm. According to experience, the width of fingers except the thumb of a common person is L1, the distance from the tiger mouth to the tip of the thumb is L2, and the distance between the outer edges of the fingers with two hands extending straight forward, namely the width of the shoulder of the adult is L3, wherein L1 is between 80 and 100mm, L2 is between 60 and 75mm, and L3 is about 450 mm. The length of the first holding part 11 and the second holding part 12 used for holding parts is the finger gripping range, namely N1 is more than or equal to L1+ L2, and N1 is more than or equal to 140 mm. When the length of the first holding part 11 and the second holding part 12 in the horizontal direction is larger than the shoulder width of a human body, the operation is inconvenient, and at this time, 0.5L3 is more than or equal to N2 is more than or equal to L3, namely N2 is between 225 mm and 450 mm.

The support portion 10 is further provided with an operation portion 20 fixed on the support portion 10, and the operation portion 20 is configured to be operated when an operator holds the support portion 10 to adjust the rotation speed of the motor and realize steering.

Specifically, the pair of operation portions 20 are provided, the pair of operation portions 20 are respectively provided on the first holding portion 11 and the second holding portion 12 and are arranged in mirror symmetry, and the pair of operation portions 20 are used for sending out operation signals according to displacement generated by hand operation of an operator. The pair of operation portions 20 are used for controlling the traveling of the mower, and an operator can operate the pair of operation portions 20 through fingers when holding the first holding portion 11 and the second holding portion 12 with both hands, so that the operation is not required to be performed through the forward and backward movement of arms, and the problems of unstable center of gravity and the like caused in the operation process are avoided.

Further, the pair of operation parts 20 respectively have a thumb engaging groove 23, and the operator can put a finger into the thumb engaging groove 23 and move the thumb engaging groove 23 to perform a clockwise operation or a counterclockwise operation. The finger may be a thumb, and the detection member 21 described below outputs a voltage signal by swinging the thumb back and forth.

As shown in fig. 4, specifically, the distance from the thumb engaging groove 23 to the center of the finger grip of the support 10 (i.e., the height of the thumb engaging groove 23) is N3, and in the embodiment of the present invention, the height N3 of the thumb engaging groove 23 is set to be 50-70 mm. Since the length of the thumb is limited, the angle α at which the thumb engaging groove 23 can be rotated around the pair of operating parts 20 by the thumb is limited, and the angle α is set to-30 ° to 30 ° in the present invention.

The pair of operation parts 20 are provided with elastic components 24, one end of each elastic component 24 is connected with the thumb clamping groove 23, and the other end of each elastic component 24 is arranged on the support part 10. The elastic assembly 24 is used for resetting the thumb clamping groove 23 to an initial position, so that parking braking can be accurately realized by the controller. In the present invention, the elastic component 24 may be a return spring or a torsion spring, and the specific arrangement form may be selected according to actual needs, which is not limited herein.

Further, the pair of operation parts are respectively provided with a detection piece 21 and a connector 22 electrically connected with the detection piece 21, the detection piece 21 is used for sending out an operation signal according to displacement generated by hand operation of an operator, and the controller is electrically connected with the operation part 20 through the connector 22, so that a control command can be sent to the mower according to the operation signal sent out by the detection piece 21. In this embodiment, the detecting element 21 is a potentiometer sensor, which can generate different displacements according to the operation range of the hand and output corresponding voltage values to output voltage signals. The displacement comprises linear displacement and/or angular displacement, and the angular displacement can be generated through the thumb clamping groove 23 in the invention, namely, the pair of operation parts 20 can generate the angular displacement through the detection piece 21 and convert the operation state into corresponding voltage values, and send operation signals to the controller, so that the controller can send control instructions according to the corresponding voltage values, thereby controlling the forward/backward movement, turning or zero-turning of the mower, and controlling the speed of the mower according to the amplitude of the specific angular displacement. Of course, in other embodiments, the detecting element 21 may also be other elements for detecting hand operation, including but not limited to displacement sensor, light sensor or pressure sensor, and the like, which is not limited herein.

Specifically, the hand operation of the operator includes the left and right hands operating the pair of operation portions 20 in the same direction and the left and right hands operating the pair of operation portions 20 in opposite directions. The equidirectional operation comprises a clockwise operation moving from an initial position to a front end position and a counterclockwise operation moving from the initial position to a rear end position; the reverse direction operations include a left-hand counterclockwise operation while a right-hand clockwise operation, and a left-hand clockwise operation while a right-hand counterclockwise operation.

Further, the operation part 20 includes a fixing part 211 and a rotating part 212, wherein the fixing part 211 is fixed on the support part 10, the rotating part 212 is rotatable relative to the fixing part 211, and the detecting member 21 is used for detecting the angle of rotation of the rotating part 212 relative to the fixing part 211. Specifically, the rotating portion 212 can rotate in two directions relative to the fixing portion 211, and the thumb engaging groove 23 is disposed on the rotating portion 212 and drives the rotating portion 212 to rotate synchronously, so as to facilitate operation by fingers. The fixing portion 211 is provided with a first position, a second position and a third position, wherein the second position is an initial position of the rotating portion 212 and the second position is located between the first position and the third position, the third position is a maximum position of the rotating portion 212, and the first position is a maximum position of the rotating portion 212 in a reverse rotation direction. When the rotating part 212 is located at the first position, the voltage value output by the detecting member 21 is minimum; when the rotating portion 212 is located at the third position, the voltage value output by the detecting member 21 is the maximum.

As shown in fig. 5 and 6, in a preferred embodiment of the present invention, the voltage value output by the detecting element 21 can be set to be 0-5V, that is, when the rotating portion 212 is located at the first position, the voltage value output by the detecting element 21 is 0V, and when the rotating portion 212 is located at the third position, the voltage value output by the detecting element 21 is 5V. Accordingly, the rotation angle α of the rotating portion 212 is set to-20 ° to 20 °, and the range of the voltage value outputted from the detecting member 21 is in positive linear correlation with the rotation angle α, that is, when the rotation angles α of the pair of operating portions 20 are-20 °, 0 ° and 20 °, respectively, the rear end position, the initial position and the front end position are respectively corresponded, and simultaneously the voltage value outputted from the detecting member 21 is 0V, 2.5V and 5V, respectively. In other words, the pair of operation units 20 can output a high voltage signal by rotating clockwise, and can output a low voltage signal by rotating counterclockwise.

In a specific embodiment of the present invention, when the pair of operating parts 20 each rotate clockwise to output a high voltage signal, the controller sends a control command to the lawn mower to drive the left tire and the right tire to advance, respectively; when the pair of operation units 20 each output a low voltage signal by rotating counterclockwise, the controller sends a control command to the lawnmower, thereby driving the left tire and the right tire to move backward.

Further, when the left hand and the right hand operate in the same direction and have the same amplitude, the control command is a forward/backward command; when the left hand and the right hand operate in the same direction with different amplitudes, the control instruction is a turning instruction; and when the left hand and the right hand operate in opposite directions with the same amplitude, the control command is a zero steering command.

Accordingly, the controller speed output of the mower, i.e., the speed at which the left and right tires advance or retreat, depends on the specific voltage value output from the detector 21. When the voltage value range output by the detection piece 21 is (2.5, 5), the rotating speed output of the controller is increased along with the increase of the voltage value, and the corresponding rotating speed output range of the controller is 0-100%, and when the voltage value range output by the detection piece 21 is [0, 2.5 ], the rotating speed output of the controller is reversely increased along with the decrease of the voltage value, and the corresponding rotating speed output range of the controller is 0-100%. That is, the voltage value range (2.5, 5) is a forward range, the voltage value range [0, 2.5 ] is a backward range, and when the voltage value output from the detector 21 is about 2.5V, the pair of operation portions 20 are at the initial positions, the controller rotation speed output is 0, and the voltage value range is in the intermediate range. The specific range between the middle sections can be set according to needs, and certainly, the range between the middle sections can not be set to be too small, so that an operator can conveniently control the range.

As shown in fig. 4 and 7, the pair of operation parts 20 are further provided with a safety switch 25, and the safety switch 25 can be used for controlling on/off of an electromagnetic brake of the garden tool and establishing physical and electrical connections with the pair of operation parts 20, respectively, so that an operator needs to press the pair of safety switches 25 before operating the pair of operation parts 20, thereby operating the corresponding actions performed by the garden tool. The pair of operation parts 20 are in a locked state before the safety switch 25 is triggered, no response is made to any operation, and the pair of operation parts 20 can be operated and used only after the safety switch 25 is triggered, namely, an operator starts the safety switch 25 in a state of ensuring safe operation, so that the aim of realizing 'double-action' operation can be effectively realized, and misoperation can be effectively avoided.

As shown in fig. 8, in the second embodiment of the present invention, the present invention further provides a steering control mechanism 200, which includes a support portion 10, and the support portion 10 includes a first grip portion 11 and a second grip portion 12 integrally provided. The first holding portion 11 and the second holding portion 12 are horizontally inclined and arranged in a mirror symmetry manner, and an included angle between the first holding portion 11 and the second holding portion 12 at a connection position is an obtuse angle. A pair of operation parts 20 are arranged on the first holding part 11 and the second holding part 12. The first grip 11 and the second grip 12 have the same structure as the steering mechanism 100 of the first embodiment, and the pair of operating units 20 are speed-adjusting knobs. The speed-adjusting handle 20 is disposed at two ends of the supporting portion 10, and includes a detecting member 21, an elastic member 24 and a safety switch 25 in the first embodiment as shown in fig. 3, and since the structures of the detecting member 21, the elastic member 24 and the safety switch 25 are the same as those in the first embodiment, the description thereof is omitted. The speed regulating rotating handles are respectively arranged on the first holding part 11 and the second holding part 12, and the two speed regulating rotating handles 20 are in mirror symmetry. In the embodiment, the rotation angle of the speed regulating rotating handle 20 is preferably set to-20 to 20 degrees, and an operator can control the corresponding tire to move forward or backward by rotating the speed regulating rotating handle clockwise or anticlockwise.

As shown in fig. 9, in a third embodiment of the present invention, the present invention further provides a steering control mechanism 300, which includes a support portion 10, and the support portion 10 includes a first grip portion 11 and a second grip portion 12 that are separately arranged. The first holding portion 11 and the second holding portion 12 are inclined in the vertical direction and preferably arranged in a mirror symmetry manner, and the first holding portion 11 and the second holding portion 12 are n-shaped, so that an operator can hold the first holding portion 11 and the second holding portion 12 vertically with the left hand and the right hand respectively to keep balance of the operator in shaking of the mower. At this time, the length of the first grip 11 and the second grip 12 for holding a hand is still set to be N1, and the length of the first grip 11 and the second grip 12 in the horizontal direction is still set to be N2, where N1 is greater than or equal to 140mm, and N2 is located between 225 mm and 450 mm.

The invention also discloses a control method of the mower with the steering control mechanism 100, which mainly comprises the following steps:

s1, when the left hand and the right hand both operate the steering control mechanism clockwise in the same amplitude, the mower is in a forward state;

when the left hand and the right hand both operate the steering control mechanism anticlockwise with the same amplitude, the mower is in a retreating state;

s2, when the steering control mechanism is operated clockwise or anticlockwise by the left hand, the right hand operates in any direction and the operation amplitude is smaller than that of the left hand, the turning center is on the right side, and the mower is in a front right turning state or a rear right turning state;

when the steering control mechanism is operated by the right hand clockwise or anticlockwise, the left hand operates in any direction, and the operation amplitude is smaller than that of the right hand, the turning center is positioned on the left side, and the mower is in a front left turning state or a rear left turning state;

s3, when the left hand operates the steering control mechanism clockwise and the right hand operates the steering control mechanism anticlockwise with the same amplitude, the mower is in a right zero-steering turning state;

when the steering control mechanism is operated clockwise by the right hand and anticlockwise by the left hand in the same amplitude, the mower is in a left zero-steering turning state.

In conclusion, the invention has simple structure, and can control the forward/backward movement, the turning and the zero steering of the garden tool only by performing small-amplitude actions by hands, thereby effectively keeping the gravity center of the human body stable and balanced and ensuring that the control is more convenient and safer.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.