CN112449846A

CN112449846A - Mower and control mechanism thereof

Info

Publication number: CN112449846A
Application number: CN201910853496.XA
Authority: CN
Inventors: 陈亚明; 徐锋; 冯增辉; 冯春亭; 姚远; 吴迪
Original assignee: FJ Dynamics Technology Co Ltd
Current assignee: FJ Dynamics Technology Co Ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2021-03-09

Abstract

The invention discloses a mower and an operating mechanism thereof, wherein the mower comprises a mower body, a mowing mechanism and an operating mechanism. The mowing mechanism is disposed in a lower space of the body. The control mechanism comprises at least one control rod and at least one control body, wherein the control rod is provided with a high end part and a low end part corresponding to the high end part, the control body comprises a mounting seat and a pivot seat rotatably arranged on the mounting seat, the mounting seat is arranged on the machine body, the low end part of the control rod is arranged on the pivot seat, and when the high end part of the control rod swings back and forth, the low end part of the control rod drives the pivot seat to rotate relative to the mounting seat.

Description

Mower and control mechanism thereof

Technical Field

The invention relates to a mowing machine, in particular to a mower and an operating mechanism thereof.

Background

A lawn mower is an automated mechanical tool for trimming a lawn that can replace labor to reduce labor and labor costs. The conventional lawn mower comprises a main body, a mowing mechanism, a steering wheel, a speed change mechanism and a parking mechanism, wherein the mowing mechanism is arranged in a lower space of the main body, the steering wheel, the speed change mechanism and the parking mechanism are respectively arranged at different positions of the main body, so that when a user sits on the main body, the user can control the traveling direction of the lawn mower through the steering wheel, the traveling speed of the main body is controlled through the speed change mechanism, and the parking mechanism reliably keeps the lawn mower in a parking state. The steering wheel, the speed change mechanism and the parking mechanism of the existing mower are independent from each other, which brings more challenges to beginners, such as the fact that the beginners often have busy hands and feet when operating the mower through the steering wheel, the speed change mechanism and the parking mechanism, and even are easy to cause safety accidents.

Disclosure of Invention

An object of the present invention is to provide a lawn mower and an operating mechanism thereof, wherein the lawn mower provides an operating mechanism capable of controlling a traveling direction and a traveling speed of the lawn mower to facilitate a user to conveniently operate the lawn mower.

An object of the present invention is to provide a lawn mower and an operating mechanism thereof, wherein the operating mechanism is capable of operating the lawn mower between a parked state and a driving state. In other words, the control mechanism is an integrated mechanism integrating speed control, direction control and operating state control to simplify the control of the mower.

An object of the present invention is to provide a lawn mower and an operating mechanism thereof, wherein the operating mechanism provides two operating levers, which are symmetrically disposed on opposite sides of a main body of the lawn mower, and a user seated on the main body can conveniently operate the lawn mower through the two operating levers. For example, the forward walking and walking speed of the mower can be controlled when a user pushes two levers forwards simultaneously and in the same amplitude, the backward and backward speed of the mower can be controlled when the user pulls the two levers forwards simultaneously and in the same amplitude, and the steering of the mower can be controlled when the two levers are pushed or pulled in different amplitudes.

An object of the present invention is to provide a lawn mower and a control mechanism thereof, in which the magnitude of the forward pushing and backward pulling of the lever is limited to control the fastest speed (including the fastest forward speed and the fastest backward speed) of the lawn mower, thereby securing the safety of the lawn mower.

It is an object of the present invention to provide a lawn mower and an operating mechanism thereof, wherein the operating mechanism provides a front rotation limiter and a rear rotation limiter, wherein the front rotation limiter and the rear rotation limiter are used for limiting the maximum amplitude of the operating lever pushed forward and pulled backward, respectively.

An object of the present invention is to provide a lawn mower and a control mechanism thereof, wherein the control mechanism provides two hydraulic buffers disposed at the front side and the rear side of the lever, respectively, wherein the hydraulic buffers can enhance the user's comfort when pushing the lever forward or pulling the lever backward, so as to prevent the speed of the lawn mower from reaching the fastest speed rapidly from 0km/h without being controlled.

An object of the present invention is to provide a lawn mower and a control mechanism thereof, wherein the hydraulic shock absorber enables the lever to have a tendency to return to a vertical position and a displacement when a pushing force or a pulling force applied to the lever by a user is weakened or canceled, so as to automatically reduce the speed of the lawn mower, thereby ensuring the safety of the lawn mower.

An object of the present invention is to provide a lawn mower and an operating mechanism thereof, wherein the lawn mower provides a mowing mechanism which is adjustably held in a lower space of a main body, and a height of the mowing mechanism from the ground can be automatically adjusted.

It is an object of the present invention to provide a lawn mower and an operating mechanism thereof, wherein the lawn mower provides an elevation mechanism, the elevation mechanism is provided to the main body, and the lawn mowing mechanism is drivably provided to the elevation mechanism, wherein the elevation mechanism is capable of automatically adjusting the relative position of the lawn mowing mechanism and the main body to adjust the height of the lawn mowing mechanism from the ground.

An object of the present invention is to provide a lawn mower and an operating mechanism thereof, wherein if the lawn mower touches an obstacle such as a stone during the lawn mowing process, the height adjusting mechanism allows the lawn mower to be automatically raised when the lawn mower is acted by the obstacle such as the stone so as to prevent the lawn mower from being damaged by the impact of the obstacle such as the stone.

An object of the present invention is to provide a lawn mower and an operating mechanism thereof, wherein the height adjusting mechanism provides an electric driving unit and an adjusting unit driveably connected to the electric driving unit, the lawn mowing mechanism is disposed on the adjusting unit, wherein the electric driving unit can automatically drive the adjusting unit to adjust the ground clearance of the lawn mowing mechanism by the adjusting unit driving the lawn mowing mechanism to ascend and descend.

According to one aspect of the present invention, there is provided a lawn mower comprising:

a body;

a mowing mechanism, wherein the mowing mechanism is arranged in the lower space of the body; and

an operating mechanism, wherein the operating mechanism comprises at least one operating rod and at least one operating body, wherein the operating rod has a high end and a low end corresponding to the high end, wherein the operating body comprises a mounting seat and a pivot seat rotatably disposed on the mounting seat, the mounting seat is disposed on the machine body, the low end of the operating rod is mounted on the pivot seat, and when the high end of the operating rod swings back and forth, the low end of the operating rod drives the pivot seat to rotate relative to the mounting seat.

According to an embodiment of the present invention, the control mechanism includes two control levers and two control bodies, and the mounting seats of the two control bodies are respectively arranged on the machine body symmetrically to each other, so that the two control levers are symmetrical to each other.

According to an embodiment of the present invention, the mount has a pivot space and an upper opening communicating with the pivot space, the pivot base is held in the pivot space of the mount, and the lower end portion of the lever extends to the pivot space through the upper opening of the mount.

According to an embodiment of the present invention, the manipulation body further includes a stand switch disposed at an outer side of the mounting base, wherein the lower end portion of the manipulation lever is rotatably mounted to the pivot base to contact the stand switch after the lower end portion of the manipulation lever swings to the outer side of the mounting base.

According to an embodiment of the present invention, the outer side of the mounting seat has a positioning notch communicating the pivot space and the upper opening, and the standing switch corresponds to the positioning notch of the mounting seat, wherein the lower end portion of the lever can be positioned in the positioning notch of the mounting seat.

According to an embodiment of the present invention, the pivot base has a receiving groove, a receiving channel and a swinging channel, the receiving channel communicates with the receiving groove at an upper portion of the pivot base, and the receiving channel corresponds to the upper opening of the mount base, the swinging channel communicates with the receiving groove at an outer side of the pivot base, wherein the lower end portion of the lever extends to the receiving groove through the receiving channel of the pivot base, and the lower end portion of the lever can enter and be held at the swinging channel.

According to an embodiment of the present invention, the pivot base includes a front side wall, a rear side wall and an inner side wall, the front side wall and the rear side wall are spaced apart from each other and are disposed to face each other, a front side and a rear side of the inner side wall are disposed to the front side wall and the rear side wall, respectively, to form the swing passage between the front side wall and the rear side wall, and the receiving groove is formed between the front side wall, the rear side wall and the inner side wall, wherein the lower end portion of the lever is rotatably mounted to the front side wall and the rear side wall.

According to an embodiment of the present invention, the manipulation body further includes a swing stopper, the swing stopper is disposed on the pivot base and protrudes from the receiving groove to allow the swing stopper to limit a swing range of the manipulation lever toward an inner side of the mounting base by abutting against the lower end portion of the manipulation lever.

According to an embodiment of the present invention, the manipulation body further includes a swing stopper, wherein the swing stopper is disposed on the inner sidewall of the pivot base, and the swing stopper protrudes from the receiving groove to allow the swing stopper to limit a swing range of the manipulation lever toward an inner side of the mounting base by abutting against the lower end portion of the manipulation lever.

According to an embodiment of the present invention, the inner sidewall of the pivot base has a swing stopper through hole, the swing stopper through hole communicates with the receiving groove, wherein the swing stopper extends from an outer side of the inner sidewall to the receiving groove through the swing stopper through hole of the inner sidewall.

According to an embodiment of the present invention, the manipulation body further includes a front rotation stopper and a rear rotation stopper, the front rotation stopper and the rear rotation stopper are respectively provided to the mounting seat and protrude from the pivot space, and the front rotation stopper corresponds to the pivot seat at a front side of the pivot seat to allow the front rotation stopper to limit a rotation amplitude of the pivot seat by abutting against the front side of the pivot seat, and the rear rotation stopper corresponds to the pivot seat at a rear side of the pivot seat to allow the rear rotation stopper to limit a rotation amplitude of the pivot seat by abutting against the rear side of the pivot seat.

According to one embodiment of the invention, the pivot mount further comprises a front extending wall and a rear extending wall, the front extension wall extends from a lower end of the front side wall to a front side, the rear extension wall extends from a lower end of the rear side wall to a rear side, wherein the manipulation body further comprises a front side rotation stopper and a rear side rotation stopper, the front side rotation stopper and the rear side rotation stopper are respectively provided to the mount and protrude from the pivot space, and the front side rotation stopper corresponds to the front extension wall to allow the front side rotation stopper to limit a rotation amplitude of the pivot base by abutting against the front extension wall, and the rear side rotation stopper corresponds to the rear extension wall, to allow the rear rotation limiter to limit the rotation amplitude of the pivot mount by abutting against the rear extension wall.

According to an embodiment of the present invention, the mount has a front-side rotation stopper penetration hole and a rear-side rotation stopper penetration hole, the front-side rotation stopper penetration hole and the rear-side rotation stopper penetration hole communicating with the pivot space, respectively, wherein the front-side rotation stopper extends from the bottom of the mount to the pivot space through the front-side rotation stopper penetration hole, and the rear-side rotation stopper extends from the bottom of the mount to the pivot space through the rear-side rotation stopper penetration hole.

According to an embodiment of the present invention, the manipulating body includes a rotating shaft, the pivot base is disposed at a middle portion of the rotating shaft, and two ends of the rotating shaft are respectively rotatably disposed at the mounting base.

According to an embodiment of the invention, the steering body comprises an angle sensor, which is arranged at the mounting and connected to the shaft.

According to one embodiment of the invention, the angle sensor is arranged outside the mounting seat.

According to an embodiment of the present invention, the manipulation body further includes at least two hydraulic buffers, each of the hydraulic buffers is disposed at the mount, respectively, and a lower end of at least one of the hydraulic buffers extends to the front extension wall and a lower end of at least one of the hydraulic buffers extends to the rear extension wall.

According to an embodiment of the present invention, the lawn mower further comprises an elevation mechanism, wherein the elevation mechanism comprises an electric driving unit and an adjusting unit, the electric driving unit is disposed on the main body, the adjusting unit is disposed on the main body and is drivably connected to the electric driving unit, wherein the lawn mowing mechanism is disposed on the adjusting unit to adjustably maintain the lawn mowing mechanism in a lower space of the main body by the elevation mechanism.

According to an embodiment of the present invention, the adjusting unit comprises a front rotating shaft, a rear rotating shaft, two front mounting bodies, two rear mounting bodies, two front pivoting arms, two rear pivoting arms, two front pushing arms, two rear pushing arms and two connecting arms, wherein each front mounting body is symmetrically arranged on the machine body, two ends of the front rotating shaft are respectively rotatably arranged on each front mounting body, wherein each rear mounting body is symmetrically arranged on the machine body, two ends of the rear rotating shaft are respectively rotatably arranged on each rear mounting body and are drivably connected to the electric driving unit, wherein a middle part of each front pivoting arm is respectively arranged on two ends of the front rotating shaft, wherein a middle part of each rear pivoting arm is respectively arranged on two ends of the rear rotating shaft, wherein the upper end portion of each said pushing and extending front arm is rotatably mounted at the outer end of the front arm of each said pivoting front arm, and the lower end portion of each said pushing and extending front arm is mounted at the grass cutting mechanism, wherein the upper end portion of each said pushing and extending rear arm is rotatably mounted at the outer end of the rear arm of each said pivoting rear arm, and the lower end portion of each said pushing and extending rear arm is mounted at the grass cutting mechanism, wherein the two ends of each said connecting arm are rotatably mounted at the inner end of the front arm of said pivoting front arm and the inner end of the rear arm of said pivoting rear arm.

According to another aspect of the present invention, there is further provided a control mechanism, comprising:

a lever, wherein said lever has a high end and a low end corresponding to said high end; and

a control body, wherein the control body comprises a mounting seat and a pivot seat rotatably disposed on the mounting seat, the lower end of the control rod is mounted on the pivot seat, and when the upper end of the control rod swings back and forth, the lower end of the control rod drives the pivot seat to rotate relative to the mounting seat.

Drawings

Fig. 1 is a perspective view of a lawn mower according to a preferred embodiment of the present invention.

Fig. 2 is an exploded view of the lawn mower according to the above preferred embodiment of the present invention.

Fig. 3 is a perspective view of an operating mechanism of the lawn mower according to the above preferred embodiment of the present invention.

Fig. 4 is an exploded view of the control mechanism of the lawn mower according to the above preferred embodiment of the present invention.

Fig. 5 is a front view of the lawn mower according to the above preferred embodiment of the present invention, illustrating the lawn mower in a parked state.

Fig. 6 is another front view of the lawn mower according to the above preferred embodiment of the present invention, illustrating the lawn mower in a driving state.

Fig. 7A is a side view of the mower according to the above preferred embodiment of the present invention, illustrating the mower in a driving state, wherein the mower has a speed of 0 km/h.

Fig. 7B shows the structure of a control lever and a control body of the control mechanism when the mower is in the above state according to the above preferred embodiment of the present invention.

Fig. 8A is another side view of the mower according to the above preferred embodiment of the present invention, illustrating the mower in the driving state, wherein the mower travels forward.

Fig. 8B shows the structural states of the control lever and the control body of the control mechanism when the mower according to the above preferred embodiment of the present invention is in the above state.

Fig. 9A is another side view of the mower according to the above preferred embodiment of the present invention, illustrating the mower in the driving state, wherein the mower travels backward.

Fig. 9B shows the structural states of the control lever and the control body of the control mechanism when the mower according to the above preferred embodiment of the present invention is in the above state.

Fig. 10 is a perspective view of an elevation mechanism of the lawn mower according to the above preferred embodiment of the present invention.

Fig. 11 is an exploded view of the height adjusting mechanism of the lawn mower according to the above preferred embodiment of the present invention.

Fig. 12A is a side view schematically illustrating a state of the lawnmower according to the above preferred embodiment of the present invention.

Fig. 12B is a perspective view of the height-adjusting mechanism of the lawn mower according to the above preferred embodiment of the present invention in the above state.

Fig. 13A is a side view schematically illustrating another state of the lawn mower according to the above preferred embodiment of the present invention.

Fig. 13B is a perspective view of the height-adjusting mechanism of the lawn mower according to the above preferred embodiment of the present invention in the above state.

Fig. 14A is a side view schematically illustrating another state of the lawn mower according to the above preferred embodiment of the present invention.

Fig. 14B is a side view schematically illustrating still another state of the lawnmower according to the above preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 to 14B of the drawings of the present specification, a lawn mower according to a preferred embodiment of the present invention is disclosed and illustrated in the following description, wherein the lawn mower includes a main body 10, a mowing mechanism 20, an elevating mechanism 30, and an operating mechanism 40, wherein the elevating mechanism 30 is disposed on the main body 10, the mowing mechanism 20 is disposed on the elevating mechanism 30, so as to adjustably maintain the mowing mechanism 20 in a lower space of the main body 10 by the elevating mechanism 30, such that the elevating mechanism 30 can automatically adjust a relative position of the mowing mechanism 20 and the main body 10 to adjust a ground clearance of the mowing mechanism 20 according to actual needs, and the elevating mechanism 30 maintains the ground clearance of the mowing mechanism 20 in an adjusted state, wherein the operating mechanism 40 is disposed on the main body 10, to operate the mower via the operating mechanism 40.

Referring to fig. 1 and 2, the body 10 includes a frame 11, a power mechanism 12, and a set of wheels 13, wherein the power mechanism 12 is disposed on the frame 11, each of the wheels 13 is disposed at a front portion and a rear portion of each of two sides of the frame 11, and each of the wheels 13 can be directly or indirectly connected to the power mechanism 12, so that each of the wheels 13 can drive the body 10 to walk when the power mechanism 12 provides power. The height adjusting mechanism 30 is provided to the frame 11 of the body 10, and the height adjusting mechanism 30 is located at a lower portion of the frame 11 of the body 10. The manipulation mechanism 40 is provided to the frame 11 of the body 10, and the manipulation mechanism 40 is located at an upper portion of the frame 11 of the body 10.

In particular, the control mechanism 40 comprises at least one control body 41 and at least one control rod 42, wherein the manipulating body 41 further includes a mounting seat 411 and a pivoting seat 412 rotatably provided to the mounting seat 411, the mounting seat 411 is provided to the frame 11 of the body 10, wherein the lever 42 has a high end 421 and a low end 422 corresponding to the high end 421, wherein the lower end 422 of the lever 42 is mounted to the pivot mount 412, to hold the high end 421 of the lever 42 in the upper portion of the frame 11, wherein after the high end 421 of the lever 42 is driven to swing back and forth at the upper portion of the frame 11, the lower end 422 of the control rod 42 can drive the pivot seat 412 to rotate relative to the mounting seat 411, so as to control the walking direction and walking speed of the lawn mower. That is, the user can manipulate the lawn mower by riding a seat provided at an upper portion of the frame 11 and by holding the high end 421 of the joystick lever 42.

More specifically, in this specific example of the mower shown in fig. 1 to 14B, the control mechanism 40 includes two control bodies 41 and two control levers 42, wherein the mounting seats 411 of each control body 41 are symmetrically disposed on opposite sides of the frame 11 of the main body 10, so that the two control levers 42 are correspondingly held on opposite sides of the frame 11 of the main body 10.

It should be noted that the manner of disposing the mounting seat 411 of the manipulating body 41 on the frame 11 of the main body 10 is not limited in the lawn mower of the present invention, for example, in a preferred example of the lawn mower of the present invention, the mounting seat 411 may be mounted on the frame 11 by means of screws or a screw and nut combination, and in another preferred example of the lawn mower of the present invention, the mounting seat 411 may be disposed on the frame 11 by means of welding.

The control mechanism 40 includes at least one angle sensor 43, wherein the angle sensor 43 is connected to the power mechanism 12, and the angle sensor 43 is configured to detect a rotation angle of the pivot seat 412 of the control body 41 to control the power output by the power mechanism 12, so as to control the lawn mower. Preferably, when the lever 42 is in the vertical position, the angle of the pivot base 412 of the manipulation body 41 is defined as 0 degree, and the power mechanism 12 is prohibited from outputting power.

Referring to fig. 3 and 4, the mounting seat 411 has a pivot space 4111 and an upper opening 4112 communicating with the pivot space 4111, wherein the pivot seat 412 is held in the pivot space 4111 of the mounting seat 411, and the lower end 422 of the control rod 42 is mounted to the pivot seat 412 after extending to the pivot space 4111 through the upper opening 4112 of the mounting seat 411. Preferably, the pivot base 412 is suspended in the pivot space 4111 of the mounting seat 411 so as not to be blocked by the inner wall of the mounting seat 411 for forming the pivot space 4111 when the pivot base 412 rotates in the pivot space 4111 of the mounting seat 411. The upper opening 4112 of the mounting seat 411 allows the lower end 422 of the lever 42 to swing, so that the lower end 422 of the lever 42 can drive the pivot seat 412 to rotate in the pivot space 4111 relative to the mounting seat 411.

Specifically, the manipulating body 40 further includes a rotating shaft 44, wherein the pivot seat 412 is disposed in the middle of the rotating shaft 44, and both ends of the rotating shaft 44 are respectively rotatably disposed on the mounting seat 411, such that the pivot seat 412 is rotatably retained in the pivot space 4111 of the mounting seat 411. Preferably, the pivot base 412 and the rotating shaft 44 are fixedly installed, and both ends of the rotating shaft 44 are respectively installed to the installation base 411 through bearings. The angle sensor 43 is mounted to the mounting seat 411, and a detector (detection shaft) of the angle sensor 43 is drivably mounted to an end of the rotating shaft 44, so that the angle sensor 43 can detect the rotation angle of the pivot seat 412 by detecting the rotation amplitude of the rotating shaft 44.

Further, referring to fig. 3 and 4, the control mechanism 40 includes a position switch 45, the position switch 45 is disposed outside the mounting seat 411 and is connected to the power mechanism 12, wherein the lower end portion 422 of the control lever 42 is rotatably mounted on the pivot seat 412 to contact the position switch 45 after the lower end portion 422 of the control lever 42 swings to the outside of the mounting seat 411, so that the position switch 45 can provide a parking signal, and the power mechanism 12 can be prevented from providing power when the parking signal is executed, so that the lawn mower is in a parking state. Preferably, the control mechanism 40 further comprises a mounting plate 46, wherein the mounting plate 46 is used for mounting the standing switch 45 to the outer side of the mounting seat 411, so as to arrange the standing switch 45 to the outer side of the mounting seat 411. Alternatively, the stand switch 45 may be directly installed at the outer side of the mounting seat 411 to dispose the stand switch 45 at the outer side of the mounting seat 411.

Preferably, the outer side of the mounting seat 411 has a positioning notch 4113, the positioning notch 4113 communicates with the pivoting space 4111 and the upper opening 4112, the position switch 45 corresponds to the positioning notch 4113 of the mounting seat 411, and the lower end 422 of the control rod 42 can be positioned in the positioning notch 4113 of the mounting seat 411 to place the lawn mower in the parking state. It can be understood that, when the lower end 422 of the control rod 42 swings outwards and is positioned in the positioning notch 4113 of the mounting seat 411, the control rod 42 is prevented from swinging forwards and backwards by the side wall of the mounting seat 411 forming the positioning notch 4113, so as to ensure the safety of the lawn mower. That is, in the case that the low end portion 422 of the control lever 42 is not separated from the positioning notch 4113 of the mounting seat 411, even when a user applies a pushing or pulling force on the high end portion 421 of the control lever 42 to drive the control lever 42 to swing back and forth, the control lever 42 will not swing back and forth, so as to ensure the safety of the lawn mower.

Preferably, with continued reference to fig. 3 and 4, the pivot base 412 has a receiving groove 4121, a receiving channel 4122 and a swinging channel 4123, the receiving channel 4122 communicates with the receiving groove 4121 at the upper part of the pivot base 412, and the receiving channel 4122 corresponds to the upper opening 4112 of the mounting base 411, the swinging channel 4123 communicates with the receiving groove 4121 at the outer side of the pivot base 412, wherein the lower end portion 422 of the lever 42 extends to the receiving groove 4121 through the receiving channel 4122 of the pivot base 412, and the lower end portion 422 of the lever 42 can enter and be held in the swinging channel 4123. Specifically, the pivot base 412 includes a front wall 4124, a rear wall 4125 and an inner wall 4126, the front wall 4124 and the rear wall 4125 are spaced apart and disposed opposite to each other, the front side and the rear side of the inner wall 4126 are disposed on the front wall 4124 and the rear wall 4125 respectively to form the swing passage 4123 between the front wall 4124 and the rear wall 4125 and to form the receiving groove 4121 between the front wall 4124, the rear wall 4125 and the inner wall 4126, wherein the lower end portion 422 of the lever 42 is rotatably mounted on the front wall 4124 and the rear wall 4125.

Further, the control body 41 includes a swing stopper 413, the swing stopper 413 is disposed on the pivot seat 412 and protrudes out of the receiving groove 4121, so as to allow the swing stopper 413 to limit the swing range of the control rod 42 toward the inner side of the mounting seat 411 by abutting against the lower end 422 of the control rod 42. Specifically, the pivot base 412 has a swing stopper through hole 4127, the swing stopper through hole 4127 communicates with the receiving groove 4121, wherein the swing stopper 413 extends from the outer side of the inner sidewall 4126 to the receiving groove 4121 through the swing stopper through hole 4127 of the inner sidewall 4126, such that the swing stopper 4127 protrudes from the receiving groove 4121. It will be appreciated that the swing limit 413 limits the swing of the lower end 422 of the lever 42 to the inside of the mounting seat 411, so that the lever 42 can be maintained in a vertical position to facilitate the user to control the mower via the control mechanism 40.

Further, the manipulating body 41 includes a front side rotation stopper 414 and a rear side rotation stopper 415, the front side rotation stopper 414 and the rear side rotation stopper 415 are respectively disposed at the mounting seat 411 and protrude from the pivot space 4111, and the front side rotation stopper 414 corresponds to the pivot seat 412 at a front side of the pivot seat 412 to allow the front side rotation stopper 414 to limit a rotation amplitude of the pivot seat 412 by abutting against the front side of the pivot seat 412, and the rear side rotation stopper 415 corresponds to the pivot seat 412 at a rear side of the pivot seat 412 to allow the rear side rotation stopper 415 to limit a rotation amplitude of the pivot seat 412 by abutting against the rear side of the pivot seat 412, so that a traveling speed and a retreating speed of the lawn mower can be controlled. Preferably, the height dimension of the pivoting space 4111 of the front rotation limiter 414 protruding out of the mounting seat 411 is smaller than the height dimension of the pivoting space 4111 of the rear rotation limiter 415 protruding out of the mounting seat 411, in such a way that the maximum traveling speed of the lawn mower is controlled to be greater than the maximum backward speed.

Specifically, the pivot base 412 further includes a front extension wall 4128 and a rear extension wall 4129, wherein the front extension wall 4128 extends from the lower end of the front side wall 4124 to the front side, and the rear extension wall 4129 extends from the lower end of the rear side wall 4125 to the rear side. Preferably, the front extension wall 4128 and the front side wall 4124 are a unitary structure, and the rear extension wall 4129 and the rear side wall 4125 are a unitary structure. The front rotation stopper 414 corresponds to the front extension wall 4128 to allow the front rotation stopper 414 to limit the forward rotation of the pivot base 412 by abutting against the front extension wall 4128, and correspondingly, the rear rotation stopper 415 corresponds to the rear extension wall 4129 to allow the rear rotation stopper 415 to limit the backward rotation of the pivot base 412 by abutting against the rear extension wall 4129. For example, in one specific example of the lawn mower of the present invention, the amplitude of forward rotation of the pivot base 412 is limited to within 15 °, and the amplitude of backward rotation of the pivot base 412 is limited to within 10 °. Specifically, the fastest walking speed of the lawn mower can be controlled to be 18km/h by limiting the forward rotation range of the pivot seat 412 in the pivot space 4111 of the mounting seat 411 to be within 15 °, and the fastest retreating speed of the lawn mower can be controlled to be 12km/h by limiting the backward rotation range of the pivot seat 412 in the pivot space 4111 of the mounting seat 411 to be within 10 °.

More specifically, the mounting seat 411 has a front rotation limiter penetration hole 4114 and a rear rotation limiter penetration hole 4115, the front rotation limiter penetration hole 4114 and the rear rotation limiter penetration hole 4115 communicate with the pivot space 4111, respectively, wherein the front rotation limiter 414 passes through the front rotation limiter penetration hole 4114 and extends from the bottom of the mounting seat 411 to the pivot space 4111, such that the front rotation limiter 414 protrudes out of the pivot space 4111 of the mounting seat 411, and the rear rotation limiter 415 passes through the rear rotation limiter penetration hole 4115 and extends from the bottom of the mounting seat 411 to the pivot space 4111, such that the rear rotation limiter 415 protrudes out of the pivot space 4111 of the mounting seat 411.

Further, the manipulating body 41 includes at least two hydraulic buffers 416, each of the hydraulic buffers 416 is disposed on the mounting seat 411, and a lower end of at least one of the hydraulic buffers 416 extends to the front extension wall 4128, and a lower end of at least one of the hydraulic buffers 416 extends to the rear extension wall 4129. When the high end 421 of the control rod 42 swings forward to drive the pivot base 412 to rotate forward in the pivot space 4111 of the mounting base 411 by the control rod 42, the hydraulic buffer 416 corresponding to the rear extension wall 4129 of the pivot base 412 can act to enhance the resistance of the user pushing forward the high end 421 of the control rod 42, thereby improving comfort. Accordingly, when the low end 422 of the control rod 42 swings backward to drive the pivot base 412 to rotate backward in the pivot space 4111 of the mounting base 411 by the control rod 42, the hydraulic buffer 416 corresponding to the front extension wall 4128 of the pivot base 412 can act to enhance the resistance of the user pulling the high end 421 of the control rod 42 forward and backward, thereby improving the comfort. Preferably, when the pushing or pulling force applied by the user to the high end 421 of the lever 42 is weakened or cancelled, the hydraulic buffer 416 has a tendency and displacement to restore the lever 42 to the vertical state, so as to ensure the safety of the mower.

Fig. 5 shows the lawn mower in the parking state, wherein the lever 42 is swung outward to position the lower end 422 of the lever 42 in the positioning notch 4113 of the mounting seat 411, so that the lower end 422 of the lever 42 abuts against the position switch 45, and thus the power mechanism 12 is prevented from outputting power. It can be appreciated that the side wall of the mounting seat 411 forming the positioning notch 4113 can limit the swing back and forth of the lower end 422 of the lever 42 to prevent the mower from being misoperated.

Fig. 6-7B show the mower in the riding condition with the lower end 422 of the lever 42 disengaged from the alignment notch 4113 of the mount 411 to maintain the lever 42 in an upright position. When the user pushes the high ends 421 of the two levers 42 simultaneously and equally to swing the levers 42 forward, the low ends 422 of the levers 42 drive the pivot bases 412 to rotate in the pivot spaces 4111 of the mounting seats 411, and the angle sensor 43 can detect the rotation angle of the pivot bases 412 to determine the walking speed of the lawn mower required by the user according to the rotation angle of the pivot bases 412 detected by the angle sensor 43, referring to fig. 8A and 8B. When a user pulls the high ends 421 of the two levers 42 at the same time and with the same amplitude to swing the levers 42 backward, the low ends 422 of the levers 42 drive the pivot bases 412 to rotate in the pivot spaces 4111 of the mounts 411, and the angle sensor 43 can detect the rotation angle of the pivot bases 412 to determine the backward speed of the lawn mower required by the user according to the rotation angle of the pivot bases 412 detected by the angle sensor 43, referring to fig. 9A and 9B.

The height-adjusting mechanism 30 includes an electric driving unit 31 and an adjusting unit 32 connected to the electric driving unit 31 in a driving manner, with reference to fig. 10 and 11, wherein the electric driving unit 31 and the adjusting unit 32 are respectively provided to the main body 10, and the mowing mechanism 20 is provided to the adjusting unit 32. When the electric driving unit 31 drives the adjusting unit 32, the adjusting unit 32 can lift the mowing mechanism 20 to automatically adjust the ground clearance of the mowing mechanism 20.

More specifically, the electric drive unit 31 and the adjustment unit 32 are respectively disposed in the lower space of the main body 10, so that the adjustment unit 32 can hold the mowing mechanism 20 in the lower space of the main body 10.

With continued reference to fig. 10 and 11, the adjustment unit 32 includes a front shaft 321, a rear shaft 322, two front mounting bodies 323, two rear mounting bodies 324, two front pivot arms 325, two rear pivot arms 326, two front push arms 327, two rear push arms 328, and two connecting arms 329.

Each of the front installation bodies 323 is symmetrically disposed to the body 10, and both ends of the front rotation shaft 321 extend to be rotatably installed to each of the front installation bodies 323, respectively, such that the front rotation shaft 321 is rotatably held in a lower space of the body 10. Specifically, the front mounting body 323 may be mounted to the body 10 by means of a screw or a screw and nut to be fitted to each other, thereby disposing the front mounting body 323 to the body 10. Alternatively, the front mounting body 323 may be welded to the body 10, thereby disposing the front mounting body 323 to the body 10. Alternatively, the front mounting body 323 and a part of the mechanism of the body 10 are of an integrated structure, so that the front mounting body 323 is disposed on the body 10.

Each of the front mounting bodies 323 is respectively disposed at the frame 11 of the body 10, and each of the front mounting bodies 323 is respectively disposed at a lower portion of the frame 11, thereby rotatably holding the front rotating shaft 321 in a lower space of the body 10. In one specific example of the lawn mower of the present invention, the front mounting body 323 may be mounted to the frame 11 by means of screws or a screw and nut fit with each other. In another specific example of the mower of the present invention, the front mounting body 323 is welded to the frame 11. In another specific example of the mower of the present invention, the front mounting body 323 and the frame 11 are a single structure.

Accordingly, each of the rear mounting bodies 324 is symmetrically disposed to the main body 10, and both ends of the rear rotating shaft 322 extend to be rotatably mounted to each of the rear mounting bodies 324, such that the rear rotating shaft 322 is rotatably held in the lower space of the main body 10, wherein the rear rotating shaft 322 is drivably disposed to the electric driving unit 31 to allow the electric driving unit 31 to drive the rear rotating shaft 322 to rotate in the lower space of the main body 10. Specifically, the rear mounting body 324 may be mounted to the body 10 by means of screws or a screw and nut fit with each other, thereby disposing the rear mounting body 324 to the body 10. Alternatively, the rear mounting body 324 may be welded to the body 10, thereby disposing the rear mounting body 324 to the body 10. Alternatively, the rear mounting body 324 and a part of the mechanism of the main body 10 are of an integrated structure, so that the rear mounting body 324 is disposed on the main body 10. For example, in one specific example of the mower of the present invention, the rear mounting body 324 may be mounted to the frame 11 by screws or by a screw and nut fit. In another specific example of the mower of the present invention, the rear mounting body 324 is welded to the frame 11. In another specific example of the mower of the present invention, the rear mounting body 324 and the frame 11 are of a unitary construction.

Each of the pivoting forearms 325 has an outer forearm end 3251 and an inner forearm end 3252, wherein the middle of each of the pivoting forearms 325 is rotatably mounted at both ends of the front rotating shaft 321, so that each of the pivoting forearms 325 is synchronously rotated by the front rotating shaft 321. Accordingly, each of the rear pivoting arms 326 has a rear arm outer end 3261 and a rear arm inner end 3262, wherein the middle portion of each of the rear pivoting arms 326 is rotatably mounted at both ends of the rear rotating shaft 322, so that each of the rear pivoting arms 326 is rotated synchronously by the rear rotating shaft 322. The high end of each said push forearm 327 is pivotally mounted to said forearm outer end 3251 of each said pivot forearm 325, and the low end of each said push forearm 327 is mounted to said mower mechanism 20. Accordingly, a high end portion of each said push-pull rear arm 328 is rotatably mounted to said rear arm outer end 3261 of each said pivot rear arm 326, respectively, and a low end portion of each said push-pull rear arm 328 is mounted to said mower mechanism 20, respectively. Each connecting arm 329 has a front end portion 3291 and a rear end portion 3292 corresponding to said front end portion 3291, respectively, wherein said front end portion 3291 of each said connecting arm 329 is rotatably mounted to said inner forearm end 3252 of each said pivoting forearm 325, respectively, and said rear end portion 3292 of each said connecting arm 329 is rotatably mounted to said inner rear arm end 3262 of each said pivoting rear arm 326, respectively.

Preferably, a lower end of each of the front pushing arms 327 is rotatably mounted to the mowing mechanism 20, and a lower end of each of the rear pushing arms 328 is rotatably mounted to the mowing mechanism 20, so that each of the front pushing arms 327 and each of the rear pushing arms 328 can vertically lift the mowing mechanism 20 when each of the front pushing arms 327 and each of the rear pushing arms 328 is driven to rotate. More preferably, the length of the front pushing arm 327 is greater than the length of the rear pushing arm 328, so that when each front pushing arm 327 and each rear pushing arm 328 are driven to rotate, each front pushing arm 327 and each rear pushing arm 328 can drive the mowing mechanism 20 to horizontally and vertically lift, i.e., the mowing mechanism 20 can be kept horizontal all the time during the driving and lifting of the mowing mechanism 20. In a preferred example of the mower of the present invention, the difference between the length dimension of the push-extend front arm 327 and the length dimension of the push-extend rear arm 328 ranges from 3mm to 6mm (including 3mm and 6 mm). Preferably, the difference in length dimensions of the front push-extension arm 327 and the rear push-extension arm 328 is 4 mm.

With continued reference to fig. 10 and 11, the pivoting forearm 325 has a first forearm extension 3253 and a second forearm extension 3254, wherein the direction of extension of the first forearm extension 3253 and the direction of extension of the second forearm extension 3254 are acutely angled to form a forearm opening 3255 between the first forearm extension 3253 and the second forearm extension 3254. For example, the pivoting forearm 325 is generally "V" shaped or "V" shaped. A middle portion of the pivoting forearm 325 is fixedly mounted to an end of the front spindle 321 such that the first forearm extension 3253 of the pivoting forearm 325 forms the inner forearm end 3252 and the second forearm extension 3254 of the pivoting forearm 325 forms the outer forearm end 3251, with the forearm opening 3255 of the pivoting forearm 325 facing downward.

It is worth mentioning that the way of fixedly mounting the middle of the pivoting forearm 325 at the end of the front spindle 321 is not limited in the mower of the invention. For example, in a preferred example of the lawn mower of the present invention, the front rotary shaft 321 has a first key groove, and the middle of the pivoting front arm 325 has a front arm through hole and a second key groove communicating with the front arm through hole, wherein the end of the front rotary shaft 321 penetrates and is held in the front arm through hole of the pivoting front arm 325 so that the first key groove and the second key groove correspond to each other, and a flat key is held in the first key groove of the front rotary shaft 321 and the second key groove of the pivoting front arm 325 so as to fixedly mount the pivoting front arm 325 on the front rotary shaft 321. Optionally, a middle portion of the pivoting front arm 325 is welded to an end of the front hinge 321 to fixedly mount the middle portion of the pivoting front arm 325 to the front hinge 321.

Accordingly, the pivoting rear arm 326 has a first rear arm extension 3263 and a second rear arm extension 3264, wherein the direction of extension of the first rear arm extension 3263 and the direction of extension of the second rear arm extension 3264 have an acute included angle to form a rear arm opening 3265 between the first rear arm extension 3263 and the second rear arm extension 3264. For example, the shape of the pivoting rear arm 326 is substantially "V" or "√" shaped. A middle portion of the rear pivot arm 326 is fixedly mounted to an end portion of the rear spindle 322 such that the first rear arm extension 3263 of the rear pivot arm 326 forms the rear arm inner end 3262 and the second rear arm extension 3264 of the rear pivot arm 326 forms the rear arm outer end 3261, and the rear arm opening 3265 of the rear pivot arm 326 faces upward.

It should be noted that the manner of fixedly mounting the middle portion of the pivotal rear arm 326 at the end of the rear spindle 322 is not limited in the lawn mower of the present invention. For example, in a preferred example of the lawn mower of the present invention, the rear spindle 322 has a third key groove, the rear pivot arm 326 has a rear arm through hole and a fourth key groove communicating with the rear arm through hole in the middle thereof, wherein the end of the rear spindle 322 penetrates and is held in the rear arm through hole of the rear pivot arm 326 such that the third key groove and the fourth key groove correspond to each other, and a flat key is held in the third key groove of the rear spindle 322 and the fourth key groove of the rear pivot arm 326 to fixedly mount the rear pivot arm 326 to the rear spindle 322. Optionally, a middle portion of the pivoting rear arm 326 is welded to an end portion of the rear hinge 322 to fixedly mount the middle portion of the pivoting rear arm 326 to the rear hinge 322.

Referring to fig. 10 and 11, the height of the front spindle 321 and the height of the rear spindle 322 are the same, the middle of the front pivoting arm 325 is fixedly mounted to the end of the front spindle 321 with the front arm opening 3255 of the front pivoting arm 325 facing downward, and the middle of the rear pivoting arm 326 is fixedly mounted to the end of the rear spindle 322 with the rear arm opening 3265 of the rear pivoting arm 326 facing upward, such that the height of the front arm inner end 3252 of the front pivoting arm 325 is lower than the height of the rear arm inner end 3262 of the rear pivoting arm 326, and the height of the front arm outer end 3251 of the front pivoting arm 325 is the same as the height of the rear arm outer end 3261 of the rear pivoting arm 326, such that the push-out front arm 327 rotatably mounted to the front arm outer end 3251 of the front pivoting arm 325 and the push-out rear arm 328 rotatably mounted to the rear arm outer end 3261 of the rear pivoting arm 326 are made to be rotated so as to be rotated The mowing mechanism 20 mounted to the lower end of the push-extend front arm 327 and the lower end of the push-extend rear arm 328 is horizontally held in the lower space of the body 10. It will be appreciated that the connecting arm 329 is inclined. Preferably, the connecting arm 329 is convexly curved, so that the electric driving unit 31 can easily drive the rear rotating shaft 322 to simultaneously drive the front rotating shaft 321 to rotate via the connecting arm 329, thereby driving the mowing mechanism 20 to vertically ascend and descend.

With continued reference to fig. 10 and 11, the front mounting body 323 has a first through hole 3230, and both ends of the front rotating shaft 321 extend to the outer side of each front mounting body 323 through the first through hole 3230 of each front mounting body 323, respectively, to allow the middle of the pivoting front arm 325 to be fixedly mounted to the end of the front rotating shaft 321 at the outer side of the front mounting body 323. Preferably, an end of the front rotating shaft 321 is rotatably mounted to the first through hole 3230 of the front mounting body 323 by a bearing.

Specifically, the anterior mounting body 323 has a first anterior splint 3231 and a second forearm splint 3232, wherein the first anterior splint 3231 and the second forearm splint 3232 have a notch, respectively, and the first anterior splint 3231 and the second forearm splint 3232 are mounted to each other in such a manner that the notch of the first anterior splint 3231 and the notch of the second forearm splint 3232 correspond to each other, so that the first through hole 3230 is formed between the first anterior splint 3231 and the second forearm splint 3232.

Accordingly, the rear mounting body 324 has a second through hole 3240, and both ends of the rear rotating shaft 322 extend to the outside of each rear mounting body 324 through the second through hole 3240 of each rear mounting body 324, respectively, to allow the middle portion of the pivoting rear arm 326 to be fixedly mounted to the end of the rear rotating shaft 322 at the outside of the rear mounting body 324. Preferably, an end of the rear rotary shaft 322 is rotatably mounted to the second through hole 3240 of the rear mounting body 324 through a bearing.

Specifically, the rear mounting body 324 has a first rear arm bridge 3241 and a second rear arm bridge 3242, wherein the first rear arm bridge 3241 and the second rear arm bridge 3242 have a notch, respectively, and the first rear arm bridge 3241 and the second rear arm bridge 3242 are mounted to each other in such a manner that the notch of the first rear arm bridge 3241 and the notch of the second rear arm bridge 3242 correspond to each other, so that the second through hole 3240 is formed between the first rear arm bridge 3241 and the second rear arm bridge 3242.

Preferably, referring to fig. 10 and 11, each of the pushing and extending forearms 327 has a slide 3270, and the outer end 3251 of the pivoting forearm 325 is rotatably mounted on the slide 3270 of the pushing and extending forearm 327, so that when the front side of the mowing mechanism 20 is acted upon by an upward force by an obstacle such as a rock, the mowing mechanism 20 exerts an upward force on the pushing and extending forearm 327, so as to allow the pushing and extending forearm 327 to move relative to the pivoting forearm 325 by sliding the outer end 3251 of the pivoting forearm 325 along the slide 3270 of the pushing and extending forearm 327, so that the front side of the mowing mechanism 20 can be tilted higher than the rear side, thus preventing the obstacle such as the rock from directly impacting the mowing mechanism 20 to damage the mowing mechanism 20.

With continued reference to fig. 10 and 11, the electric driving unit 31 includes an electric push rod 311 and a driving swing arm 312, wherein the electric push rod 311 has a mounting end 3111 and a telescopic end 3112 corresponding to the mounting end 3111, the mounting end 3111 of the electric push rod 311 is mounted to the body 10, one end of the driving swing arm 312 is rotatably mounted to the telescopic end 3112 of the electric push rod 311, and the other end of the driving swing arm 312 is fixedly disposed at the rear rotating shaft 322. When the telescopic end 3112 of the electric push rod 311 is telescopic, the electric push rod 311 can drive the rear rotating shaft 322 to synchronously rotate through the driving swing arm 312.

Referring to fig. 1 and 2, the grass cutting mechanism 20 further includes a protective housing 21, at least one driving motor 22 and at least one cutting blade 23, wherein the protective housing 21 has a grass cutting space 211, a grass outlet 212 and at least one mounting channel 213, the grass outlet 212 communicates with the grass cutting space 211 at a side of the protective housing 21, the mounting channel 213 communicates with the grass cutting space 211 at an upper portion of the protective housing 21, wherein the driving motor 22 is mounted at the upper portion of the protective housing 21, and a rotor mechanism of the driving motor 22 extends from the upper portion of the protective housing 21 to the grass cutting space 211 through the mounting channel 213, and the cutting blade 23 is drivably mounted to the rotor mechanism of the protective housing 21 to hold the cutting blade 23 in the grass cutting space 211 of the protective housing 21. Four corners of the protection housing 21 are respectively disposed at the lower end of each of the front pushing arms 327 and the lower end of each of the rear pushing arms 328, so as to allow each of the front pushing arms 327 and each of the rear pushing arms 328 to lift the mowing mechanism 20. When the lawnmower is used to cut grass, the cutting blade 23 can cut grass in the grass cutting space 211, and the cut grass clippings can be discharged out of the grass cutting space 211 through the grass outlet 212. Preferably, the mowing mechanism 20 further comprises at least one roller 24, wherein each roller 24 is rotatably mounted on the front side of the protective housing 21 for supporting the protective housing 21.

Referring to fig. 12A to 13B, a user may control the telescopic end 3112 of the electric putter 311 to extend or retract, for example, the user may control the telescopic end 3112 of the electric putter 311 to extend or retract by, but not limited to, a control button provided on the body 10. When the telescopic end 3112 of the electric push rod 311 is shifted from a retracted state to an extended state, the electric push rod 311 rotates the rear rotating shaft 322 through the driving swing arm 312, the rear rotating shaft 322 rotates each of the rear pivoting arms 326 synchronously to lower the height of the rear arm outer end 3261 of each of the rear pivoting arms 326, and at the same time, the rear arm inner end 3262 of each of the rear pivoting arms 326 rotates each of the front pivoting arms 325 through each of the connecting arms 329 to lower the height of the front arm outer end 3251 of each of the front pivoting arms 325, because the height of the front arm outer end 3251 of each of the front pivoting arms 325 and the height of the rear arm outer end 3261 of each of the rear pivoting arms 326 are synchronously lowered, so that the ground clearance of the mowing mechanism 20 is adjusted. Accordingly, when the telescopic end 3112 of the electric push rod 311 is shifted from the extended state to the retracted state, the electric push rod 311 rotates the rear rotating shaft 322 in the opposite direction through the driving swing arm 312, the rear rotating shaft 322 rotates each of the rear pivoting arms 326 synchronously to raise the height of the rear arm outer end 3261 of each of the rear pivoting arms 326, and at the same time, the rear arm inner end 3262 of each of the rear pivoting arms 326 rotates each of the front pivoting arms 325 through each of the connecting arms 329 to raise the height of the front arm inner end 3251 of each of the front pivoting arms 325, because the height of the front arm outer end 3251 of each of the front pivoting arms 325 and the height of the rear arm outer end 3261 of each of the rear pivoting arms 326 are raised synchronously, the ground clearance of the mowing mechanism 20 is adjusted.

Referring to fig. 14A and 14B, in the process of trimming lawn using the lawn mower, if the front side of the mowing mechanism 20 touches an obstacle such as a stone, the obstacle such as the stone exerts an upward force on the front side of the mowing mechanism 20 to further force the mowing mechanism 20 upward on the push-out front arm 327, so as to allow the push-out front arm 327 to move relative to the pivot front arm 325 by sliding the front arm outer end 3251 of the pivot front arm 325 along the slide way 3270 of the push-out front arm 327, so that the front side of the mowing mechanism 20 can be inclined higher than the rear side, which can prevent the obstacle such as the stone from directly impacting the mowing mechanism 20 to damage the mowing mechanism 20.

It will be appreciated by persons skilled in the art that the above embodiments are only examples, wherein features of different embodiments may be combined with each other to obtain embodiments which are easily conceivable in accordance with the disclosure of the invention, but which are not explicitly indicated in the drawings.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. A lawnmower, comprising:

a body;

2. The lawnmower of claim 1, wherein the steering mechanism comprises two of the steering levers and two of the steering bodies, the mounts of the two steering bodies being respectively disposed symmetrically to each other on the main body so that the two steering levers are symmetrical to each other.

3. The mower of claim 2 wherein the mount has a pivot space and an upper opening communicating with the pivot space, the pivot mount being retained in the pivot space of the mount, the lower end of the lever extending through the upper opening of the mount to the pivot space.

4. The mower of claim 3 wherein the control body further comprises a stand switch disposed outside the mount, wherein the lower end of the lever is rotatably mounted to the pivot mount to contact the stand switch upon swinging of the lower end of the lever outside the mount.

5. The mower of claim 4 wherein the mount has a locating notch on an exterior side thereof, the locating notch communicating the pivot space and the upper opening, the stand switch corresponding to the locating notch of the mount, wherein the lower end of the lever is positionable in the locating notch of the mount.

6. The mower of claim 5 wherein the pivot mount has a receiving channel communicating with the receiving channel at an upper portion of the pivot mount and corresponding to the upper opening of the mount, a receiving channel communicating with the receiving channel at an outer side of the pivot mount, and a swing channel extending through the receiving channel of the pivot mount to the receiving channel and accessible and retainable to the swing channel by the lower end of the lever.

7. The mower of claim 6 wherein said pivot mount comprises a front side wall, a rear side wall and an inner side wall, said front and rear side walls being spaced from and facing each other, said inner side wall having front and rear sides disposed on said front and rear side walls, respectively, to form said swing passage between said front and rear side walls and said receiving slot between said front, rear and inner side walls, wherein said lower end of said lever is rotatably mounted to said front and rear side walls.

8. The mower of claim 6 wherein the control body further comprises a swing stopper disposed on the pivot mount and protruding from the receiving groove to allow the swing stopper to limit the swing range of the lever toward the inside of the mount by abutting against the lower end of the lever.

9. The mower of claim 7 wherein the control body further comprises a swing stopper, wherein the swing stopper is disposed on the inner sidewall of the pivot mount and protrudes from the receiving groove to allow the swing stopper to limit the swing amplitude of the lever toward the inside of the mount by abutting against the lower end of the lever.

10. The mower of claim 9 wherein the inner side wall of the pivot mount has a swing stop aperture, the swing stop aperture communicating with the receiving slot, wherein the swing stop extends from an outer side of the inner side wall to the receiving slot through the swing stop aperture of the inner side wall.

11. The lawnmower of any one of claims 1 to 10, wherein the manipulation body further comprises a front-side rotation stopper and a rear-side rotation stopper, the front-side rotation stopper and the rear-side rotation stopper being provided to the mount and protruding from the pivot space, respectively, and the front-side rotation stopper corresponding to the pivot base on a front side of the pivot base to allow the front-side rotation stopper to restrict a rotation amplitude of the pivot base by abutting against the front side of the pivot base, and the rear-side rotation stopper corresponding to the pivot base on a rear side of the pivot base to allow the rear-side rotation stopper to restrict a rotation amplitude of the pivot base by abutting against the rear side of the pivot base.

12. The mower of claim 7 wherein the pivot mount further comprises a front extending wall and a rear extending wall, the front extension wall extends from a lower end of the front side wall to a front side, the rear extension wall extends from a lower end of the rear side wall to a rear side, wherein the manipulation body further comprises a front side rotation stopper and a rear side rotation stopper, the front side rotation stopper and the rear side rotation stopper are respectively provided to the mount and protrude from the pivot space, and the front side rotation stopper corresponds to the front extension wall to allow the front side rotation stopper to limit a rotation amplitude of the pivot base by abutting against the front extension wall, and the rear side rotation stopper corresponds to the rear extension wall, to allow the rear rotation limiter to limit the rotation amplitude of the pivot mount by abutting against the rear extension wall.

13. The mower of claim 9 wherein the pivot mount further comprises a front extending wall and a rear extending wall, the front extension wall extends from a lower end of the front side wall to a front side, the rear extension wall extends from a lower end of the rear side wall to a rear side, wherein the manipulation body further comprises a front side rotation stopper and a rear side rotation stopper, the front side rotation stopper and the rear side rotation stopper are respectively provided to the mount and protrude from the pivot space, and the front side rotation stopper corresponds to the front extension wall to allow the front side rotation stopper to limit a rotation amplitude of the pivot base by abutting against the front extension wall, and the rear side rotation stopper corresponds to the rear extension wall, to allow the rear rotation limiter to limit the rotation amplitude of the pivot mount by abutting against the rear extension wall.

14. The mower of claim 13 wherein the mount has a front rotation stop aperture and a rear rotation stop aperture, the front and rear rotation stop apertures communicating with the pivot space, respectively, wherein the front rotation stop extends from the bottom of the mount to the pivot space through the front rotation stop aperture and the rear rotation stop extends from the bottom of the mount to the pivot space through the rear rotation stop aperture.

15. The mower according to any one of claims 1 to 10, wherein the control body comprises a shaft, the pivot base is disposed at a middle portion of the shaft, and both ends of the shaft are rotatably disposed at the mounting base, respectively.

16. The mower of claim 13 wherein the main body comprises a shaft, the pivot mount is disposed at a middle portion of the shaft, and two ends of the shaft are rotatably disposed at the mounting seats, respectively.

17. The lawnmower of claim 16, wherein the control body comprises an angle sensor disposed on the mount and connected to the shaft.

18. The mower of claim 17 wherein the angle sensor is disposed outside of the mount.

19. The mower of claim 12, wherein the control body further comprises at least two hydraulic buffers, each of the hydraulic buffers being disposed at the mount, respectively, and a lower end of at least one of the hydraulic buffers extending to the front extension wall and a lower end of at least one of the hydraulic buffers extending to the rear extension wall.

20. The mower of claim 18 wherein the control body further comprises at least two hydraulic buffers, each of the hydraulic buffers being disposed at the mount, and a lower end of at least one of the hydraulic buffers extending to the front extension wall and a lower end of at least one of the hydraulic buffers extending to the rear extension wall.

21. The lawnmower of any one of claims 1-10, further comprising an elevation mechanism, wherein the elevation mechanism comprises an electric drive unit and an adjustment unit, the electric drive unit being disposed on the main body, the adjustment unit being disposed on the main body and being drivably connected to the electric drive unit, wherein the mowing mechanism is disposed on the adjustment unit to adjustably maintain the mowing mechanism in a lower space of the main body by the elevation mechanism.

22. The lawnmower of claim 11, further comprising an elevation mechanism, wherein the elevation mechanism comprises an electric drive unit and an adjustment unit, the electric drive unit being disposed on the body, the adjustment unit being disposed on the body and being drivably connected to the electric drive unit, wherein the mowing mechanism is disposed on the adjustment unit to adjustably maintain the mowing mechanism in a lower space of the body by the elevation mechanism.

23. The lawnmower of claim 15, further comprising an elevation mechanism, wherein the elevation mechanism comprises an electric drive unit and an adjustment unit, the electric drive unit being disposed on the body, the adjustment unit being disposed on the body and being drivably connected to the electric drive unit, wherein the mowing mechanism is disposed on the adjustment unit to adjustably maintain the mowing mechanism in a lower space of the body by the elevation mechanism.

24. The lawnmower of claim 20, further comprising an elevation mechanism, wherein the elevation mechanism comprises an electric drive unit and an adjustment unit, the electric drive unit being disposed on the body, the adjustment unit being disposed on the body and being drivably connected to the electric drive unit, wherein the mowing mechanism is disposed on the adjustment unit to adjustably maintain the mowing mechanism in a lower space of the body by the elevation mechanism.

25. The mower of claim 24 wherein the adjustment unit comprises a front pivot, a rear pivot, two front mounts, two rear mounts, two front pivot arms, two rear pivot arms, two front push arms, two rear push arms, and two connecting arms, wherein each of the front mounts is symmetrically disposed on the main body, and wherein each of the front pivot ends is rotatably mounted on each of the front mounts, wherein each of the rear mounts is symmetrically disposed on the main body, and wherein each of the rear pivot ends is rotatably mounted on each of the rear mounts and drivably connected to the electric drive unit, wherein each of the front pivot arms has a middle portion disposed on each of the front pivot ends, and wherein each of the rear pivot arms has a middle portion disposed on each of the rear pivot ends, wherein the upper end portion of each said pushing and extending front arm is rotatably mounted at the outer end of the front arm of each said pivoting front arm, and the lower end portion of each said pushing and extending front arm is mounted at the grass cutting mechanism, wherein the upper end portion of each said pushing and extending rear arm is rotatably mounted at the outer end of the rear arm of each said pivoting rear arm, and the lower end portion of each said pushing and extending rear arm is mounted at the grass cutting mechanism, wherein the two ends of each said connecting arm are rotatably mounted at the inner end of the front arm of said pivoting front arm and the inner end of the rear arm of said pivoting rear arm.

26. A steering mechanism, comprising:

27. The steering mechanism of claim 26, wherein said mounting block has a pivot space and an upper opening communicating with said pivot space, said pivot block being retained in said pivot space of said mounting block, said lower end of said joystick extending through said upper opening of said mounting block to said pivot space.

28. The steering mechanism of claim 27, wherein the steering body further includes a stand switch disposed outside of the mount, wherein the lower end of the steering rod is rotatably mounted to the pivot mount to contact the stand switch upon swinging of the lower end of the steering rod outside of the mount.

29. The steering mechanism of claim 28, wherein an outer side of said mounting block has a positioning notch communicating said pivot space and said upper opening, said standing switch corresponds to said positioning notch of said mounting block, wherein said lower end of said joystick can be positioned in said positioning notch of said mounting block.

30. The steering mechanism of claim 29, wherein said pivot mount has a receiving slot, a receiving channel and a swinging channel, said receiving channel communicates with said receiving slot at an upper portion of said pivot mount and said receiving channel corresponds to said upper opening of said mounting mount, said swinging channel communicates with said receiving slot at an outer side of said pivot mount, wherein said lower end of said steering rod extends to said receiving slot through said receiving channel of said pivot mount and said lower end of said steering rod is accessible and retainable to said swinging channel.

31. The steering mechanism of claim 30, wherein said pivot mount includes a front side wall, a rear side wall and an inner side wall, said front and rear side walls being spaced from and facing each other, said inner side wall having front and rear sides disposed on said front and rear side walls, respectively, to form said swinging passage between said front and rear side walls and said receiving slot between said front, rear and inner side walls, wherein said lower end portion of said steering lever is rotatably mounted to said front and rear side walls.

32. The steering mechanism of claim 31, wherein said steering body further comprises a swing stopper, wherein said swing stopper is disposed on said inner sidewall of said pivot base and protrudes from said receiving slot to allow said swing stopper to limit the swing amplitude of said steering rod toward the inside of said mounting base by abutting against said lower end of said steering rod.

33. The steering mechanism of claim 32, wherein the inner side wall of the pivot post has a swing stop aperture, the swing stop aperture communicating with the receiving slot, wherein the swing stop extends from an outer side of the inner side wall to the receiving slot through the swing stop aperture of the inner side wall.

34. The manipulation mechanism of claims 26 to 33, wherein the manipulation body further comprises a front rotation stopper and a rear rotation stopper, the front rotation stopper and the rear rotation stopper being respectively provided to the mount and protruding from the pivot space, and the front rotation stopper corresponding to the pivot base at a front side of the pivot base to allow the front rotation stopper to limit a rotation amplitude of the pivot base by abutting against the front side of the pivot base, and the rear rotation stopper corresponding to the pivot base at a rear side of the pivot base to allow the rear rotation stopper to limit a rotation amplitude of the pivot base by abutting against the rear side of the pivot base.

35. The steering mechanism of claim 31, wherein the pivot mount further comprises a front extending wall and a rear extending wall, the front extension wall extends from a lower end of the front side wall to a front side, the rear extension wall extends from a lower end of the rear side wall to a rear side, wherein the manipulation body further comprises a front side rotation stopper and a rear side rotation stopper, the front side rotation stopper and the rear side rotation stopper are respectively provided to the mount and protrude from the pivot space, and the front side rotation stopper corresponds to the front extension wall to allow the front side rotation stopper to limit a rotation amplitude of the pivot base by abutting against the front extension wall, and the rear side rotation stopper corresponds to the rear extension wall, to allow the rear rotation limiter to limit the rotation amplitude of the pivot mount by abutting against the rear extension wall.

36. The steering mechanism of claim 34, wherein the pivot mount further comprises a front extending wall and a rear extending wall, the front extension wall extends from a lower end of the front side wall to a front side, the rear extension wall extends from a lower end of the rear side wall to a rear side, wherein the manipulation body further comprises a front side rotation stopper and a rear side rotation stopper, the front side rotation stopper and the rear side rotation stopper are respectively provided to the mount and protrude from the pivot space, and the front side rotation stopper corresponds to the front extension wall to allow the front side rotation stopper to limit a rotation amplitude of the pivot base by abutting against the front extension wall, and the rear side rotation stopper corresponds to the rear extension wall, to allow the rear rotation limiter to limit the rotation amplitude of the pivot mount by abutting against the rear extension wall.

37. The steering mechanism of claim 36, wherein said mounting block has a front rotation stop aperture and a rear rotation stop aperture, said front and rear rotation stop apertures communicating with said pivot space, respectively, wherein said front rotation stop extends from a bottom of said mounting block to said pivot space through said front rotation stop aperture and said rear rotation stop extends from said bottom of said mounting block to said pivot space through said rear rotation stop aperture.

38. The manipulation mechanism of claim 37, wherein the manipulation body comprises a shaft, the pivot base is disposed at a middle portion of the shaft, and two ends of the shaft are rotatably disposed at the mounting base, respectively.

39. The steering mechanism of claim 38, wherein said steering body includes an angle sensor disposed in said mounting base and coupled to said shaft.

40. The steering mechanism of claim 35, wherein said steering main body further comprises at least two hydraulic buffers, each of said hydraulic buffers being disposed at said mount, respectively, and a lower end of at least one of said hydraulic buffers extending to said front extension wall and a lower end of at least one of said hydraulic buffers extending to said rear extension wall.

41. The manipulation mechanism according to claim 39, wherein the manipulation main body further comprises at least two hydraulic buffers, each of which is provided to the mount, respectively, and a lower end of at least one of the hydraulic buffers extends to the front extension wall and a lower end of at least one of the hydraulic buffers extends to the rear extension wall.