阅读说明：本技术 手推式动力工具 (Hand-push type power tool ) 是由 杨德中 鲜超 于 2019-04-18 设计创作，主要内容包括：本发明公开了一种手推式动力工具,包括：主机,包括用于实现手推式动力工具的功能的功能元件；操作装置,连接至主机以供用户操作手推式动力工具；主机包括：用于驱动切割元件以转动轴线为轴转动的主电机；操作装置包括：操作组件,供用户操作并发出信号；操作装置还包括：信号收集装置,收集并处理操作组件发出的信号；总线；总线包括：信号线,与信号收集装置以及主机相连使得信号收集装置与主机实现通信连接。本发明能够提供一种结构简化且控制更加方便、智能的手推式动力工具。(The invention discloses a hand-push type power tool, comprising: a main body including a functional element for realizing a function of the hand-push type power tool; the operating device is connected to the main machine and is used for a user to operate the hand-push type power tool; the host computer includes: the main motor is used for driving the cutting element to rotate by taking the rotating axis as a shaft; the operation device includes: the operation assembly is used for a user to operate and send a signal; the operation device further includes: the signal collecting device is used for collecting and processing signals sent by the operating assembly; a bus; the bus comprises: and the signal line is connected with the signal collecting device and the host machine so that the signal collecting device is in communication connection with the host machine. The invention can provide the hand-push type power tool which is simplified in structure, more convenient to control and more intelligent.)

1. A hand propelled power tool comprising:

a main body including a functional element for realizing a function of the hand-push type power tool;

the operating device is connected to the main machine and is used for a user to operate the hand-push type power tool;

the host includes:

the main motor is used for driving the cutting element to rotate by taking a rotating axis as a shaft;

the operation device includes:

the operation assembly is used for a user to operate and send a signal;

the method is characterized in that:

the operation device further includes:

the signal collecting device is used for collecting and processing the signals sent by the operating assembly;

a bus;

the bus includes:

and the signal line is connected with the signal collecting device and the host machine so that the signal collecting device is in communication connection with the host machine.

2. The hand propelled power tool of claim 1, wherein:

the operating assembly further comprises a trigger for controlling the rotation of the main motor;

the signal collecting device comprises a first signal circuit board, and the first signal circuit board collects and processes signals sent by the trigger;

the main machine also comprises a control circuit board provided with a control circuit for controlling the rotation of the main motor;

the signal line is connected with the first signal circuit board and the control circuit board.

3. The hand propelled power tool of claim 1, wherein:

the main machine also comprises a self-propelled motor for driving the hand-push type power tool to realize self-walking;

the operating assembly also comprises a self-propelled switch for controlling the rotation of the self-propelled motor;

the signal collecting device comprises a second signal circuit board, and the second signal circuit board collects and processes signals sent by the self-propelled switch and the speed regulating part;

the main machine also comprises a driving circuit board provided with a driving circuit for driving the self-propelled motor to rotate;

the signal line is connected with the second signal circuit board and the driving circuit board.

4. The hand propelled power tool of claim 3, wherein:

the operating assembly also comprises a speed regulating part for regulating the rotating speed of the self-propelled motor;

the second signal circuit board collects and processes signals sent by the speed regulating part.

5. The hand propelled power tool of claim 1, wherein:

the operating assembly further comprises a trigger for controlling the main motor to rotate and a self-propelled switch for controlling the self-propelled motor to rotate;

the signal collecting device comprises a third signal circuit board, and the third signal circuit board collects and processes signals sent by the trigger and the self-propelled switch;

the main machine also comprises a control circuit board provided with a control circuit for controlling the rotation of the main motor and a driving circuit board of a driving circuit for driving the rotation of the self-propelled motor;

the signal line is connected to the third circuit board, the driving circuit board and the control circuit board.

6. The hand propelled power tool of claim 5, wherein:

the operating assembly also comprises a speed regulating part for regulating the rotating speed of the self-propelled motor;

the third signal circuit board collects and processes signals sent by the speed regulating part.

7. The hand-push type power tool according to any one of claims 3 to 6, characterized in that:

the self-propelled switch comprises a first switch and a second switch, and when the first switch and the second switch are both triggered, the self-propelled motor rotates.

8. The hand propelled power tool of claim 1, wherein:

the host comprises a Bluetooth device;

the signal collecting device comprises a fourth circuit board, the fourth circuit board collects and processes signals sent or received by the Bluetooth device, and the signal line is connected with the fourth signal circuit board and the host.

9. The hand propelled power tool of claim 1, wherein:

the host further comprises:

an illumination device for illumination;

a battery pack for providing power for the hand-push type power tool;

an adjustment assembly for adjusting the operating device;

the functional circuit board is connected with the lighting device, the battery pack and the adjusting assembly;

the signal line is connected to the functional circuit board.

10. The hand-push type power tool according to any one of claims 1 to 9, characterized in that:

the hand-push type power tool is a mower.

11. The hand-push type power tool according to any one of claims 1 to 9, characterized in that:

the hand-push type power tool is a snow sweeper.

12. The hand-push type power tool according to any one of claims 1 or 9, characterized in that:

the signal line is a signal line adopting a 485 communication protocol.

Technical Field

The invention relates to an electric machine, in particular to a hand-push type power tool.

Background

An electric machine generally comprises functional elements for performing different functions, and operating means for a user to operate the electric machine for controlling the movement of the functional elements, in particular by operating the operating means to send signals to the functional elements. Currently, most hand-push power tools, such as lawn mowers or snow throwers, and in particular dc mowers or snow throwers, utilize current control functions via switches or actuators rather than signals, which makes the machine less simple in construction and control.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a hand-push type power tool which is simplified in structure, more convenient to control and more intelligent.

In order to achieve the above object, the present invention adopts the following technical solutions:

a hand propelled power tool comprising: a main body including a functional element for realizing a function of the hand-push type power tool; the operating device is connected to the main machine and is used for a user to operate the hand-push type power tool; the host computer includes: the main motor is used for driving the cutting element to rotate by taking the rotating axis as a shaft; the operation device includes: the operation assembly is used for a user to operate and send a signal; the operation device further includes: the signal collecting device is used for collecting and processing signals sent by the operating assembly; a bus; the bus comprises: and the signal line is connected with the signal collecting device and the host machine so that the signal collecting device is in communication connection with the host machine.

Further, the operating assembly further comprises a trigger for controlling the rotation of the main motor; the signal collecting device comprises a first signal circuit board, and the first signal circuit board collects and processes signals sent by the trigger; the main machine also comprises a control circuit board provided with a control circuit for controlling the rotation of the main motor; the signal line is connected with the first signal circuit board and the control circuit board.

Furthermore, the main machine also comprises a self-propelled motor for driving the hand-push type power tool to realize self-walking; the operating assembly also comprises a self-propelled switch for controlling the rotation of the self-propelled motor; the signal collecting device comprises a second signal circuit board, and the second signal circuit board collects and processes signals sent by the self-propelled switch and the speed regulating part; the main machine also comprises a driving circuit board provided with a driving circuit for driving the self-propelled motor to rotate; the signal line connects the second signal circuit board and the driving circuit board.

Furthermore, the operating assembly also comprises a speed regulating part for regulating the rotating speed of the self-propelled motor; the second signal circuit board collects and processes signals sent by the speed regulating part.

Further, the operating assembly also comprises a trigger for controlling the rotation of the main motor and a self-propelled switch for controlling the rotation of the self-propelled motor; the signal collecting device comprises a third signal circuit board, and the third signal circuit board collects and processes signals sent by the trigger and the self-propelled switch; the main machine also comprises a control circuit board provided with a control circuit for controlling the rotation of the main motor and a driving circuit board of a driving circuit for driving the rotation of the self-propelled motor; the signal line is connected to the third circuit board, the driving circuit board and the control circuit board.

Furthermore, the operating assembly also comprises a speed regulating part for regulating the rotating speed of the self-propelled motor; the third signal circuit board collects and processes signals sent by the speed regulating part.

Further, the self-propelled switch comprises a first switch and a second switch, and when the first switch and the second switch are both triggered, the self-propelled motor rotates.

Further, the host includes a bluetooth device; the signal collecting device comprises a fourth circuit board, the fourth circuit board collects and processes signals sent or received by the Bluetooth device, and the signal wire is connected with the fourth signal circuit board and the host.

Further, the host computer further comprises: an illumination device for illumination; a battery pack for powering the hand-propelled power tool; an adjustment assembly for adjusting the operating device; the functional circuit board is connected with the lighting device, the battery pack and the adjusting assembly; the signal line is connected to the functional circuit board.

Further, the hand-push type power tool is a mower.

Further, the hand-push type power tool is a snow sweeper.

Further, the signal line is a signal line adopting a 485 communication protocol.

Further, the signal line further includes: a wire core for transmitting signals; a protection tube surrounding the wire core; wherein, the protection tube is a corrugated tube.

Further, the cross section of the protection tube is circular, and the diameter of the cross section of the protection tube is greater than or equal to 5mm and less than or equal to 15 mm.

The invention has the advantages that: the hand-push type power tool is controlled by the signal wire for collecting and processing various signals and the circuit boards, so that the structure of the hand-push type power tool is simplified, and the control is more convenient and intelligent.

Drawings

FIG. 1 is a schematic view of a lawn mower of a first embodiment of the present invention;

FIG. 2 is a plan view of a lawn mower of a first embodiment of the present invention;

FIG. 3 is a perspective view of the mower of FIG. 2;

FIG. 4 is a top view of the main body of the lawnmower of FIG. 3 with the maintenance bin in a closed position;

FIG. 5 is a perspective view of a portion of the main unit of FIG. 4 with the service bay in an open position;

FIG. 6 is a plan view of the service cartridge of FIG. 5;

FIG. 7 is a perspective view of the service cartridge of FIG. 5;

FIG. 8 is an exploded view of a portion of the structure of the mainframe of FIG. 4;

FIG. 9 is a perspective view of a partial structure of an operating device of the lawnmower of FIG. 2;

FIG. 10 is a perspective view of a portion of the operating mechanism of the mower of FIG. 2;

FIG. 11 is a perspective view of a partial structure of the host computer in FIG. 4;

fig. 12 is a perspective view of a partial structure of the host in fig. 4;

FIG. 13 is a plan view of a portion of the structure of the main unit of FIG. 4, with the lid in a closed position;

FIG. 14 is a plan view of a portion of the structure of the main unit of FIG. 4 with the lid in an open position;

FIG. 15 is a perspective view of a battery pack compartment of the host of FIG. 14;

fig. 16 is a perspective view of a partial structure of the main unit in fig. 4, with a battery pack in a removed state;

fig. 17 is a sectional view of a part of the structure of the main unit in fig. 4, with a battery pack mounted in a battery pack case;

FIG. 18 is an exploded view of the chassis and grass cover of the host of FIG. 4;

FIG. 19 is a bottom view of the chassis and grass cover of the host computer of FIG. 4;

FIG. 20 is a partial cross-sectional view of the chassis and grass cover of the host of FIG. 4;

fig. 21 is a perspective view of a partial structure of the host in fig. 4;

FIG. 22 is an exploded view of a portion of the structure of the mainframe of FIG. 4;

fig. 23 is a perspective view of a partial structure of the lawnmower in fig. 2.

Detailed Description

The electric machine shown in fig. 1 may be an electric machine for working indoors or outdoors, and in this embodiment, the electric machine is specifically exemplified by a lawn mower 100, and the lawn mower 100 may be used by a user to operate an operating device thereof to trim lawn, vegetation, and the like.

It is understood that the electric machine may be other types of tools, such as all-terrain vehicles, golf carts, and electric tools that output some form of power to perform their tool function, and indeed, it is within the scope of the present invention that such tools include the material described below.

As shown in fig. 1 to 3, a lawnmower 100 as a first embodiment includes: an operation device 11 and a host 12. The operation device 11 is used for a user to hold in hand to operate the lawn mower 100, the main machine 12 comprises a main machine housing 121, a chassis 122 and an electric device 123, the operation device 11 and the main machine housing 121 form a rotating connection, and the electric device 123 comprises a plurality of electric elements.

As shown in fig. 1 to 7, the main body casing 121 surrounds a service compartment 1211 formed to accommodate a plurality of electrical components. The maintenance bin 1211 may be surrounded by the main body casing 121, or may be a bin body independent from the main body casing 121, and it should be noted that the casing parts, such as the maintenance bin 1211 and the maintenance cover 1212, in the main body 12, which are independent from the main body casing 121, can be regarded as a part of the main body casing 121. In this embodiment, the maintenance chamber 1211 is formed with an opening facing the outside, the maintenance chamber 1211 is provided with a maintenance cover 1212 which is detachably connected to the opening of the maintenance chamber 1211, when the maintenance cover 1212 is removed, the opening of the maintenance chamber 1211 is completely opened, and when the lawn mower 100 is horizontally placed on the ground, the opening of the maintenance chamber 1211 faces upwards; when the maintenance cap 1212 covers the maintenance bin 1211, an accommodating cavity is formed between the maintenance bin 1211 and the maintenance cap 1212, and the accommodating cavity can be relatively closed by a sealing structure at an opening connection portion between the maintenance cap 1212 and the maintenance bin 1211 to prevent moisture, dust, and the like from entering the accommodating cavity.

In this embodiment, the maintenance cap 1212 is detachably connected to the main housing 121 by screws, and when the maintenance and other operations are performed on the internal components of the maintenance chamber 1211, the screws need to be detached to remove the maintenance cap 1212. Of course, it is understood that the maintenance cover 1212 and the main housing 121 may be fixedly connected by a fastener or movably connected by a connector, for example, detachably connected by a snap, slidably connected by a sliding track, or rotatably connected by a hinge, and the maintenance cover 1212 may rotate or slide relative to the main housing 121 to form a plurality of maintenance positions in which the maintenance position 1211 is at least partially opened, so as to facilitate maintenance of the lawn mower 100. As shown in fig. 8, in the present embodiment, the maintenance cap 1212 has a substantially concave shape and includes four boundaries, i.e., a front boundary, a rear boundary, a left boundary, and a right boundary, wherein the distance between the front boundary and the rear boundary is about 221 mm, the distance between the left boundary and the right boundary is about 247 mm, and a stepped structure is formed in the vertical direction. The shape and size of the service bay 1211 are similar to those of the service cover 1212, however, the shape and size of the service cover 1212 and the service bay 1211 are not limited thereto, and as another alternative embodiment, the service cover 1212 and the service bay 1211 are substantially rectangular, and the service cover 1212 has a planar structure perpendicular to the up-down direction.

The lawn mower 100 further comprises a battery pack 1237 for providing working energy, the battery pack 1237 is placed inside a battery pack compartment surrounded by the main body case 121, and in the embodiment, the maintenance compartment 1212 is disposed between the battery pack compartment 1213 and the operating device 11, and more specifically, is disposed behind the battery pack compartment 1213 and in front of the operating device 11. It is understood that the battery compartment body 1213 can be disposed at other reasonable locations on the main body 12.

In this embodiment, the maintenance warehouse 1211 accommodates therein: a first circuit board 1231 provided with a driving circuit for driving a main motor, wherein the main motor is a motor for driving the cutting element 125 to rotate; a second circuit board 1232 provided with a control circuit for controlling the driving circuit; and a third circuit board 1233 electrically connected to the fuse 1234. It is understood that the driving circuit for driving the main motor and the control circuit for controlling the driving circuit may be provided on the same circuit board, for example, the first circuit board 1231 is provided with the driving circuit for driving the main motor and the control circuit for controlling the driving circuit. In addition, other functional elements besides the fuse 1234 and the motor may also be electrically connected to the third circuit board 1233. In this embodiment, the first circuit board 1231, the second circuit board 1232, and the third circuit board 1233 are all disposed in the maintenance warehouse 1211, so that the structure and arrangement are compact, the internal space of the host is saved, and the daily maintenance is more convenient. In fact, also housed inside the maintenance silo 1211 are a fourth circuit board 1235, to which the capacitors are connected, and a fifth circuit board 1236, provided with drive circuits for driving self-propelled motors, which are the motors for driving the travelling wheels of the mower.

The wall of the maintenance warehouse 1211 is further formed with an air inlet 1211a and an air outlet 1211b, and the air flow enters from the air inlet 1211a, flows through the interior of the maintenance warehouse 1211 and flows out from the air outlet 1211b, so as to achieve the purpose of dissipating heat of each electrical component in the maintenance warehouse 1211 and also take away impurities such as dust and the like attached in the maintenance warehouse 1211. The air flow forms an air path in the maintenance cabin 1211 as shown in fig. 7, and as can be seen from fig. 7, the air path flows through each circuit board, and meanwhile, the air flow passing through the air outlet 1211b flows through the fuse 1234 and the third circuit board 1233 connected to the fuse 1234. In the present embodiment, the air path of the maintenance warehouse 1211 is mainly configured to dissipate heat of the capacitor, the fourth circuit board 1235 connected to the capacitor, the fuse 1234, and the third circuit board 1233 connected to the fuse 1234, and to fully utilize the air path to dissipate heat of other electrical components. Therefore, it can be understood that the trend of the heat dissipation air path is designed in various ways, and other types of air path designs capable of dissipating heat of the capacitor and the fuse 1234 are also within the protection scope of the present invention.

As shown in fig. 1 to 7, the chassis 122 forms a rotational connection with the operating device 11, and the rotational connection can be fixed by a locking structure when the user operates the mower 100, so that the operating device 11 is fixed relative to the chassis 122. The upper portion of the front end of the main body case 121 is detachably connected to the first lifting portion 1214, the upper portion of the rear end of the main body case 121 is detachably connected to the second lifting portion 1215, the first lifting portion 1214 is away from the operating device 11, and the second lifting portion 1215 is located between the first lifting portion 1214 and the operating device 11. It is to be understood that the position of the second lift 1215 with respect to the operating device 11 is not limited to the above-described position. The user can hold the first lifting part 1214 with one hand to lift the front end of the mower 100 upward to be at least partially detached from the ground, can hold the second lifting part 1215 with one hand to lift the rear end of the mower 100 upward to be at least partially detached from the ground, and can lift the entire mower 100 upward by holding the first lifting part 1214 and the second lifting part 1215 with both hands to be at least partially detached from the ground, but of course, the user can move, turn, or the like the mower 100 by means of the first lifting part 1214 and the second lifting part 1215. In this embodiment, the first lifting portion 1214 and the second lifting portion 1215 are a structure that can be held independently from the main housing 121 and are detachably connected to the front end and the rear end of the main housing 121, respectively, but of course, the first lifting portion 1214 and the second lifting portion 1215 can also be rotatably connected to the main housing 121, so that the first lifting portion 1214 and the second lifting portion 1215 can rotate relative to the main housing 121 along an axis parallel to the axle, thereby enabling a user to operate the first lifting portion 1214 and the second lifting portion 1215 more flexibly. Meanwhile, it is understood that the first raised part 1214 and the second raised part 1215 may also be formed by the main housing 121 itself, and are integrated with the main housing 121.

When the mower 100 is operated, the cutting element 125 rotates around the rotation axis 101 in the cutting plane, the first and second raised parts 1214 and 1215 are located on the same side of the cutting plane and on the lower side of the main body case 121 relative to the ground cutting element 125, and the first and second raised parts 1214 and 1215 are located on the upper side of the main body case 121. Furthermore, the orthographic projections of the first lifting part 1214 and the second lifting part 1215 in the cutting plane are both located in the orthographic projection of the main machine shell 121 in the cutting plane, so that when the mower 100 walks on the ground, the main machine shell 121 always contacts any wall surface perpendicular to the cutting plane before the first lifting part 1214 and the second lifting part 1215.

When the mower 100 travels along the ground until the front end of the main machine housing 121 contacts the vertical wall surface, the horizontal distance between the first raised part 1214 and the vertical wall surface is greater than 0, which causes the main machine housing 121 to contact a front obstacle before the first raised part 1214, and in order to make the overall structure of the mower 100 more reasonable and compact, the horizontal distance between the first raised part 1214 and the vertical wall surface is greater than or equal to 99 mm and less than or equal to 131 mm, specifically, in the present embodiment, the horizontal distance between the first raised part 1214 and the vertical wall surface is about 147 mm. In addition, the horizontal distance between the first raised part 1214 and the second raised part 1215 is greater than or equal to 564 mm and less than or equal to 628 mm, the lower limit of the horizontal distance requires that the first raised part 1214 and the second raised part 1215 cannot be separated too close, so that the lawn mower 100 can keep relatively smooth without large deflection when the user lifts the first raised part 1214 and the second raised part 1215, and the upper limit of the horizontal distance requires that the first raised part 1214 and the second raised part 1215 cannot be separated too far, and the orthographic projection in the cutting plane should be included in the orthographic projection of the main machine housing 121 in the cutting plane, so that the first raised part 1214 and the second raised part 1215 are prevented from being damaged by touching the wall, and the first raised part 1214 and the second raised part 1215 are also prevented from expanding the dead angle of the cutting when the lawn mower 100 cuts. In the present embodiment, the horizontal distance between the first raised part 1214 and the second raised part 1215 is about 608 mm.

Further, the horizontal distance between the foremost end of the first raised part 1214 and the rotation axis 101 is greater than or equal to 0 and less than or equal to 350 mm, which reduces the limitation of the first raised part 1214 at the front end of the main machine housing 121 on the cutting range of the cutting element 125, and to a certain extent, inhibits the blocking of the cutting element 125 from causing a dead cutting angle when the lawn mower 100 cuts. Specifically, in the present embodiment, the horizontal distance between the foremost end of the first raised part 1214 and the rotation axis 101 is about 330 mm.

As shown in fig. 1 to 8, the lawn mower 100 further includes an illumination device 124, and the illumination device 124 includes an illumination element 1241 for illumination, an illumination switch 1242 for turning on or off the illumination element 1241, an illumination indication element 1243 for indicating whether the illumination element 1241 emits light, and an illumination circuit board 1244 for controlling the illumination element 1241 and the illumination indication element 1243. In the present embodiment, the lighting elements 1241 are installed at both left and right sides of the main body case 121 close to the battery pack case 1213 in the advancing direction of the mower 100, and when the lighting switch 1242 is activated, the lighting elements 1241 emit light toward the front side in the advancing direction of the mower 100. The illuminated indicating element 1243 is located between the illuminating element 1241 and the operating device 11, as well as between the battery compartment body 1213 and the operating device 11, and in fact it will be appreciated that the illuminated indicating element 1243 can be disposed at any reasonable location within the viewing area that can be viewed by a user when positioned behind the mower 100 to operate the operating device 11.

In this embodiment, a lamp holder 1242a is further formed on the illumination switch 1242, and the illumination indicator 1243 is mounted on the lamp holder 1242a and is fixedly connected to the lamp holder 1242 a. The lighting switch 1242 is mounted on the maintenance cover 1212, and a through hole 1212a for partially exposing the lighting switch 1242 and the lighting indication element 1243 is formed on the maintenance cover 1212, so that whether the lighting element 1241 is in a light emitting state or not is discriminated by a different color presented by the lighting indication element 1243. The light switch 1242 forms an interference fit with the bore 1212a, and it will be appreciated that the light indicating element 1243 may be attached to the service cover 1212 in other attachment configurations.

An illumination circuit board 1244 for controlling the illumination element 1241 and the illumination indication element 1243 is located inside the service bay 1211, and the illumination element 1241 and the illumination indication element 1243 are each electrically connected to the illumination circuit board 1244. The lighting switch 1242 further includes an elastic portion 1242b, an interference fit is formed between the elastic portion 1242b and the through hole 1212a, when the lighting switch 1242 is pressed downward, the elastic portion 1242b is elastically deformed to make the lighting switch 1242 displace downward, and trigger the relevant electrical element on the lighting circuit board 1244, so that the lighting element 1241 is turned on.

It is understood that the illumination device 124 of the present embodiment can also be applied to other tools, such as snow plows, all terrain vehicles, golf carts, forklifts, etc., and the configuration and the position arrangement of the illumination device can be referred to the illumination device 124 of the present embodiment, which will not be described herein in detail.

As shown in fig. 1 to 10, the lawn mower 100 includes an operating device 11 connected to a main machine 12 for a user to operate the lawn mower 100. The operating device 11 includes a handle 111 for a user to push the mower 100 to walk along the ground, the handle 111 includes a holding portion 1111 for the user to hold, the holding portion 1111 includes a first holding portion 1111a and a second holding portion 1111b, the first holding portion 1111a extends along the first straight line 102, in this embodiment, the first holding portion 1111a and the second holding portion 1111b are an integrated structure, and of course, the holding portion 1111 may be formed by connecting the first holding portion 1111a and the second holding portion 1111b separately. The handle 111 further includes a connecting rod 1112 connecting the grip 1111 and the main body 12, and in the present embodiment, the connecting rod 1112 extends along a second straight line 103 perpendicular to the first straight line 102.

The operating device 11 further includes a first switch 112 and a second switch 113 that control the self-propelled motor that drives the wheels of the mower 100 to start and stop the self-propelled motor, the first switch 112 and the second switch 113 are each mounted to the handle 111, and more specifically, the first switch 112 and the second switch 113 are each mounted to the grip 1111.

The operating device 11 further includes a fifth circuit board 1236 provided with a driving circuit for driving the self-propelled motor, the first switch 112 and the second switch 113 are both electrically connected to the fifth circuit board 1236, and only when the first switch 112 and the second switch 113 are both triggered, the driving circuit on the fifth circuit board 1236 can control the self-propelled motor to start, and the lawn mower 100 can realize self-propelling along the ground, so that the self-propelled motor cannot be started even when the first switch 112 or the second switch 113 is accidentally triggered under a non-working condition, and the safety of operation is ensured. After the self-propelled motor is started, when one of the first switch 112 and the second switch 113 is released and is no longer in the trigger state, the control circuit still controls the self-propelled motor to be kept in the starting state and not to be turned off, and only when the first switch 112 and the second switch 113 are both released and are no longer in the trigger state, the self-propelled motor is turned off. It can be understood that the operating device 11 may also include a first switch 112 for controlling the self-propelled motor to start and stop, the first switch 112 is electrically connected to a fifth circuit board 1236 provided with a driving circuit for driving the self-propelled motor, and the driving circuit controls the self-propelled motor to start only when the first switch 112 is triggered more than two times, which also prevents the self-propelled motor from being triggered and started by one time accidentally, and ensures the operation safety.

In the present embodiment, the first switch 112 and the second switch 113 are mounted on the holding portion 1111, the holding portion 1111 is formed with a groove or a hole for mounting the first switch 112 and the second switch 113, and the first switch 112 and the second switch 113 are partially embedded in the groove or the hole to form a fixed connection with the holding portion 1111, it can be understood that the first switch 112 and the second switch 113 can also be connected to the surface of the holding portion 1111. In addition, the first switch 112 and the second switch 113 are disposed at the connection portion between the first holding portion 1111a and the second holding portion 1111b, that is, the portion that is most convenient to hold when operated by the user, and of course, the first switch 112 and the second switch 113 may be disposed at other positions of the operating device 11, the structure of the handle 111 is not limited to the structure in the present embodiment, and the specific positions of the first switch 112 and the second switch 113 may be set according to the specific structure of the handle 111. It is understood that the first switch 112 and the second switch 113 may be disposed without being limited to the operating device 11, and one of the switches may be disposed on the main body 12, and the self-propelled motor may be activated when both switches are activated and may be deactivated when both switches are released.

The operating device 11 further comprises a trigger 114 and a power switch 115, wherein the trigger 114 is rotatably connected to the operating device 11 and is rotatable about the third line 104 with respect to the grip 111. The trigger 114 and the power switch 115 are electrically connected to the second circuit board 1232, and the second circuit board 1232 is provided with a control circuit for controlling the driving circuit. When the power switch 115 is triggered and the trigger 114 is pulled to the start position, the control circuit controls the cutting element 125 to start rotating, and the cutting element 125 is kept rotating by triggering the power switch 115 and keeping the trigger 114 pulled to stay at the start position. In general, the trigger 115 may engage the handle 111 when resting in the activated position, such that a user may hold the trigger 114 in the activated position while operating the mower 100 by holding the handle. In this embodiment, the holding portion 1111 is formed with an inward recessed groove 1111c, when the trigger 114 is pulled to the starting position, the trigger 114 is received in the groove 1111c, which limits the position of the trigger 114 relative to the holding portion 1111 to a certain extent, so that the user can hold the trigger 114 and the holding portion 1111 more conveniently and more easily.

It is understood that the operating device 11 of the present embodiment can also be applied to other tools, such as snow plows, all terrain vehicles, golf carts, forklifts, etc., and will not be described in detail herein.

As shown in fig. 1-12, the mower 100 includes a walking assembly 126 for enabling self-walking of the mower 100, and the walking assembly 126 includes a first drive shaft 1261 for driving the walking wheel to rotate about the fourth line 105. The lawn mower 100 further comprises an elevation assembly 127 for adjusting the chassis 122 such that the chassis 122 can be displaced up and down, the elevation assembly 127 comprising an adjustment handle 1271 for receiving adjustment power, a second drive shaft 1272 for driving the chassis 122 to move, and a linkage 1273 connecting the adjustment handle 1271 and the second drive shaft 1272. The first, second and fourth axes 1261, 1272 and 105 are parallel to each other, and the second drive shaft 1272 is disposed eccentrically with respect to the fourth axis 105 and the first drive shaft 1261. When the mower 100 is in different working conditions, the height of the chassis 122 from the ground needs to be adjusted according to actual conditions, and a user operates the adjusting handle 1271 to apply a driving force to the mower 100, and the driving force drives the connecting mechanism 1273 to rotate, so that the second driving shaft 1272 and the chassis 122 are driven to rotate, and the height of the chassis 122 is adjusted.

The main body 12 also includes a grass guard 128, typically located on the rear side of the mower 100 when the user operates the mower 100, the grass guard 128 serving to prevent grass clippings from splashing toward the rear side of the mower 100. Generally, the grass guard 128 is mounted to the chassis 122 or the main body case 121, but this causes the grass guard 128 to move up and down along with the chassis 122 or the main body case 121 when the chassis 122 is adjusted in height, and the grass guard wears down with the contact with the ground over time, which affects the usability and the service life of the grass guard 128.

In this embodiment, the height adjustment assembly 127 further includes a connecting member 1274 rotatably connected to the road wheel at the road wheel center a, the connecting member 1274 being rotatably connected to the first drive shaft 1261 and fixedly connected to the second drive shaft 1272, in this embodiment, the connecting member 1274 and the second drive shaft 1272 are formed by welding, and the grass guard 128 is mounted to the second drive shaft 1272. First drive shaft 1261 supports chassis 122, and chassis 122 is rotatably coupled to first drive shaft 1261. By reasonably setting the ratio of the distance from the first driving shaft 1261 to the road wheel center a, the distance from the second driving shaft 1272 to the road wheel center a, and the distance from the first driving shaft 1261 to the road wheel center a to the second driving shaft 1272 to the road wheel center a, when the height adjustment assembly 127 adjusts the height of the chassis 122, the second driving shaft 1272 drives the connecting piece 1274 to rotate around the road wheel center a, the connecting piece 1274 drives the chassis 122 to rotate around the road wheel center a, and the displacement of the grass blocking plate 128 in the up-down direction is smaller than half of the displacement of the chassis 122 in the up-down direction. In the present embodiment, the ratio of the distance from the first driving shaft 1261 to the road wheel center a to the distance from the second driving shaft 1272 to the road wheel center a is about 1.52, so that the vertical displacement generated by the grass blocking plate 1272 is much smaller than the vertical displacement generated by the chassis 122 when the height adjusting assembly 127 adjusts the height of the chassis 122.

In fact, the grass guard 128 may be connected to the first driving shaft 1261 or other position, but when the height adjustment assembly 127 adjusts the height of the chassis 122, the position of the road wheel center a is not changed, and the connection position of the grass guard 128 is preferably closer to the position of the road wheel center a, that is, the position of the grass guard 128 connected to the main machine 12 and the position of the road wheel center a may be infinitely close to or even coincide with each other, so that the position of the grass guard 128 in the up-down direction is kept substantially constant.

As shown in fig. 1 to 15, the main body 12 further includes an energy device for providing energy sources for the self-propelled motor and the main motor, in this embodiment, the energy device is a battery pack 1237, the main body housing 121 includes a battery pack storage body 1213, and the battery pack storage body 1213 is a separate housing connected to the main body housing 121, it is understood that the battery pack storage body 1213 may also be integrally formed with the main body housing 121. The main body 12 further includes a battery compartment cover 1216, and the battery compartment cover 1216 and the battery compartment body 1213 are rotatably connected and can rotate around a fifth straight line 106. The battery pack case body 1213 is openly formed with a window 1217 communicating the inside with the outside thereof, and the battery pack case cover 1216 has an open state and a closed state with respect to the window 1217. When the battery pack bin cover 1216 is in an open state relative to the window 1217, the window 1217 communicates the inside with the outside, and the battery pack can be taken out of the battery pack bin body 1213, i.e., the battery pack and the battery pack bin body 1213 form a detachable connection; when the battery pack case cover 1216 is in a closed state with respect to the window 1217, the battery pack case body 1213 and the battery pack case cover 1216 constitute a substantially closed accommodation space, i.e., a battery pack case, in which a battery pack is accommodated.

In this embodiment, the maintenance cover 1212 further has a locking groove 1212b, the battery pack compartment cover 1216 has a locking hook 1216a, and when the battery pack compartment cover 1216 is in a closed state with respect to the window 1217, the locking hook 1216a is locked into the locking groove 1212b to form a limiting structure with the locking groove 1212b, so that the battery pack compartment cover 1216 does not rotate with respect to the battery pack compartment body 1213. It can be understood that the setting positions of the hook 1216a and the slot 1212b are flexible, the maintenance cover 1212 may be formed with the hook 1216a, and the battery pack case cover 1216 may be formed with the slot 1212b, or the hook 1216a may be formed on the battery pack case cover 1216, and the slot 1212b may be formed on the battery pack case body 1213. In addition, the limiting structure for limiting the battery pack case cover 1216 to be kept in a closed state with respect to the battery pack case body 1213 is not limited to the mating structure of the hook 1216 and the slot 1212b, and may be other detachable limiting structures, such as a magnet, a locking member, and the like.

A support portion 1213a for supporting the battery pack case cover 1216 and keeping the battery pack case cover 1216 in an open state with respect to the battery pack case body 1213 is further formed on the outer surface of the battery pack case body 1213 in a position close to the battery pack case body 1213 to which the battery pack case cover 1216 is attached. The support portion 1213 actually limits the rotation angle of the battery pack case cover 1216 relative to the battery pack case body 1213, so that the battery pack case cover 1216 cannot rotate any more after rotating a certain angle, and in this embodiment, the rotation angle of the battery pack case cover 1216 relative to the battery pack case body 1213 is about 0 to 65 °, that is, when the battery pack case cover 1216 is supported by the support portion 1213 and remains open, the angle formed between the battery pack case cover 1216 and the battery pack case body 1213 is about 65 °. It can be understood that the angle of the battery pack case cover 1216 with respect to the battery pack case body 1213 is greater than 0 ° and less than 180 °, and other range values between 0 ° and 180 ° can be set as the range of the angle of the battery pack case cover 1216 with respect to the battery pack case body 1213, according to the angle of the battery pack case body 1213 with respect to the bottom chassis 122, the structure of the main body case 121, and the like.

In this embodiment, when the battery pack compartment cover 1216 is in an open state relative to the battery pack compartment body 1213, the handle 111 can be pressed downward to lift up the end of the main body 12 away from the handle 111, so that the gravity center of the battery pack compartment cover 1216 is shifted, the battery pack compartment cover 1216 rotates under the action of gravity, and is reset from the open state to the closed state, and the hook 1216a is clamped into the slot 1212b under the action of gravity, thereby eliminating the need to manually operate the battery pack compartment cover 1216 to rotate the battery pack compartment cover 1216 from the open state to the closed state and press the battery pack compartment cover 1216 downward so that the hook 1216a is clamped into the slot 1212 b. In addition, in this embodiment, since the first lifting portion 1214 is disposed at the front end of the battery compartment body 1213 relative to the main housing 121, when the battery compartment cover 1216 is in an open state relative to the battery compartment body 1213, the first lifting portion 1214 can be lifted upward to lift the end of the main housing 12 away from the handle 111 upward, so that the battery compartment cover 1216 is reset from the open state to the closed state under the action of gravity, and the hook 1216a is clamped into the clamping groove 1212b under the action of gravity.

As shown in fig. 1 to 17, the main casing 121 includes a battery pack body 1213, the battery pack body 1213 includes a main body surrounded by a groove, the groove is recessed toward the inside of the main casing 121, the groove may be integrally formed with the main casing 121 or may be an independent structure connected to the main casing 121, the battery pack body 1213, and the battery pack body 1213 is formed with an insertion opening for inserting a battery pack 1237, which is, in this embodiment, a window 1217.

The battery pack compartment body 1213 and the battery pack compartment cover 1216 together form a battery pack compartment for accommodating the battery pack 1237.

The inside joint portion 1213b that still is formed with direction battery package 1237 and combines to the host computer casing 121 along an cartridge direction of battery package storehouse, joint portion 1213b both can be with host computer casing 121 integrated into one piece, also can be connected to battery package storehouse body 1213 or battery package storehouse lid 1216 for independent structure, in this embodiment, joint portion 1213b is the slide rail with battery package storehouse body 1213 integrated into one piece, when the battery package was packed into battery package storehouse body 1213, from last down sliding to battery package storehouse body 1213 bottom along the slide rail, of course, joint portion 1213b also can be any other structures that have the displacement guide function.

The host 12 may further include a fixing portion for fixing the battery pack 1237 at a certain position in the battery pack compartment, and after the battery pack 1237 is inserted into the bottom of the battery pack compartment 1213, the battery pack 1237 and the fixing portion may be detachably connected by manipulating the battery pack 1237 or the fixing portion, which may be a buckle, a magnetic element, or the like integrally formed or mounted to the battery pack 1237 or the host casing 121, which is not limited herein.

In the present embodiment, the battery pack 1237 is inserted into the battery pack body 1213 from the insertion port along the slide rail in the direction shown in fig. 16. In this embodiment, the battery pack case body 1213 is inclined at an angle with respect to the horizontal plane, specifically, inclined rearward from the vertical direction, and thus the battery pack 1237 is also inserted into the battery pack case body 1213 at an angle with respect to the horizontal plane. The included angle between the insertion direction of the battery pack 1237 and the horizontal plane is equal to or greater than 30 ° and equal to or less than 80 °, specifically, the included angle between the insertion direction of the battery pack 1237 and the horizontal plane is 54 °, that is, the inclination angles of the battery pack storage body 1213 and the slide rail with respect to the horizontal plane are also 54 °, although it can be understood that the included angle may be other values within the above range.

The battery pack 1237 is also formed with a charge amount display lamp 1237a for displaying the charge amount, and the charge amount display lamp 1237a emits light in the insertion direction when the battery pack 1237 is inserted to the coupling portion 1213 b. The power indicator 1237a may be disposed at any position on the battery pack 1237, and is mostly disposed on the top surface of the battery pack 1237 for visualization, in this embodiment, the power indicator 1237a is disposed at the center of the top surface of the battery pack 1237. The battery pack compartment cover 1216 is also formed with a visible portion 1216b for the user to observe the display state of the charge amount display lamp 1237a located in the battery pack compartment. The visible portion 1216b is a transparent portion made of an at least partially transparent material. In this embodiment, the visible portion 1216b is made of polished plastic having light transmittance, but the visible portion 1216b may be made of other light-transmitting material, such as glass. The visible portion 1216b is mounted to the battery compartment cover 1216, and may be integrally formed with the battery compartment cover 1216, and at this time, the entire battery compartment cover 1216 is a transparent portion, or may be an independent structure, and is fixedly connected to the battery compartment cover 1216. In this embodiment, the visible portion 1216b is a plastic casing having a smaller covering area than the battery housing cover 1216 and made of a different material from the battery housing cover 1216. The viewing portion 1216b allows the user to view the charge amount display lamp 1237a from the outside of the battery compartment while limiting the viewing range due to its own area limitation.

To ensure the machine is stable, the battery 1237 is generally installed near the center of the main body case 121 in the left-right direction, that is, the battery 1237, the battery compartment, and the charge level indicator light 1237a are generally symmetrical about the middle plane of the operating device 11 about which the trigger 114 is symmetrical.

As shown in fig. 17, the electric quantity display lamp 1237a is limited by the visible portion 1216b without considering the refraction of light, and a light emitting region having the electric quantity display lamp 1237a as a vertex and a first boundary and a second boundary as sides is formed on the bisector, and an included angle formed by the first boundary and the second boundary is 90 ° or more and 160 ° or less. It should be noted that, at this time, the center point of the electric quantity display lamp 1237a is regarded as the electric quantity display lamp 1237a, and the visible portion 1216b includes a rear side closer to the rear and a front side closer to the front in the front-rear direction, the first boundary is a ray connecting the center point of the electric quantity display lamp 1237a and the intersection point of the rear side of the visible portion 1216b and the median plane, and the second boundary is a ray connecting the center point of the electric quantity display lamp 1237a and the intersection point of the front side of the visible portion 1216b and the median plane. Specifically, in the present embodiment, the included angle formed by the first boundary and the second boundary is 129 °, that is, the maximum visible range of the electric quantity display lamp 1237a at this time is 129 °, but may be other values in the above angle range. In addition, an included angle between the first boundary and the horizontal plane is greater than or equal to 5 ° and less than or equal to 15 °, that is, an inclination angle of the visible region of the electric quantity display lamp 1237a with respect to the horizontal plane is greater than or equal to 5 ° and less than or equal to 15 °, specifically, in this embodiment, the angle is 8 °. Since the user's line of sight is inclined downward from the rear upper side of the power indicator 1237a when operating the lawn mower 100, the design of the battery pack 1237 and the power indicator 1237a inclined rearward from the vertical direction in this embodiment can enlarge the visual range of the user viewing the power indicator 1237 a. As shown in fig. 18 to 20, the bottom plate 122 (see fig. 1) further includes a surrounding wall surface 1222 for forming a cutting space 1221 for accommodating the cutting member 125 (see fig. 1), the bottom plate 122 is further formed with a grass discharge passage 1223 for discharging weeds, and the grass discharge passage 1223 includes a connection end 1223a communicating with the cutting space 1221 and a grass discharge port 1223b opposite to the connection end 1223 a. The lawn mower 100 further includes a grass collecting device connected to the grass discharge opening 1223b for collecting cut weeds and a grass clippings cover 1224 for closing the grass discharge passage 1223 to prevent weeds from being discharged from the grass discharge opening 1223 b.

The mower 100 has a grass collecting mode and a grass chopping mode; when the mower 100 is in the grass collecting mode, the grass discharge opening 1223b is opened or connected with a grass collecting device; when the mower 100 is in the grass cutting mode, the grass cutting cover 1224 is connected to the grass discharge passage 1223, closing the grass discharge passage 1223 to prevent weeds from being discharged through the grass discharge opening 1223 b. The grass cutting cap 1224 also includes a filling end 1224a that extends into the grass discharge passage 1223 such that the grass discharge passage 1223 is partially filled. The filling end 1224a includes a filling surface for enclosing the connecting end 1223a, the filling surface extending in a continuous curved surface with the surrounding wall 1222 when the grass cover 1224 encloses the grass discharge passage 1223.

In this embodiment, a step structure 1225 is formed at the junction of the grass discharge passage 1223 and the surrounding wall 1222, and when the grass cover 1224 closes the grass discharge passage 1223, a gap of about 12 mm is formed between the filling end 1224a and the step structure 1225. When the cutting member 125 rotates about the axis of rotation 101 to cut, the cut pieces of grass tend to collect in the gap or adhere to the surrounding wall 1222.

When the grass cutting cover 1224 closes the grass discharge passage 1223, the grass cutting cover 1224 blocks the otherwise partially recessed structure of the bottom plate 122, and the filling surface and the surrounding wall 1222 form a revolving structure 1226 centered about the rotation axis 101 (see fig. 1), and the revolving structure 1226 is substantially symmetrical about the rotation axis 101. It should be noted that the rotator structure 1226 is substantially symmetrical about the rotation axis 101 regardless of the gap formed between the inner filling end 1224a thereof and the step structure 1225, the thickness of the step structure 1225 formed at the junction of the grass discharge passage 1223 and the surrounding wall surface 1222, and the thickness of the filling end 1224a itself.

As shown in fig. 21 to 22, an anti-wind cover 1218 for preventing wind of weeds is further mounted on the outer rotor of the self-propelled motor for driving the road wheels. In this embodiment, the grass-winding preventing cover 1218 is a casing structure with a plurality of air ports. The grass winding prevention cover 1218 is composed of a first cover portion 1218a close to the output end of the rotor shaft of the self-propelled motor and a second cover portion 1218b close to the input end of the rotor shaft, and the first cover portion 1218a and the second cover portion 1218b are detachably connected through a buckle 1218 c.

As shown in fig. 1, 9, 10 and 23, the operating device 11 includes an operating assembly including a trigger 114 for controlling the rotation of the main motor, a self-propelled switch for controlling the start and stop of the self-propelled motor, the self-propelled switch including a first switch 112 and a second switch 113, and a speed adjusting member for adjusting the rotation speed of the self-propelled motor, the adjusting member being specifically a speed adjusting knob 116. The speed control knob 116, the first switch 112, the second switch 113, and the speed control knob 116 are all attached to the grip portion 1111 of the handle 111, but it is needless to say that only one switch may be used to control the start and stop of the self-propelled motor. The operating device 11 further includes a signal collecting device, in this embodiment, a signal circuit board 1238, and the signal circuit board 1238 is mounted inside an accommodating space formed by the operating device 11, specifically, inside an accommodating space formed by the handle 111. The trigger 114, the first switch 112, the second switch 113 and the speed knob 116 are all connected to the signal circuit board 1238, and when the trigger 114, the first switch 112, the second switch 113 and the speed knob 116 are operated by a user, signals can be generated and transmitted to the signal circuit board 1238. Of course, the signal collecting device can be a plurality of circuit boards or other electrical devices, and is not limited herein, and in the present embodiment, the signal sent by the operating assembly is transmitted to the same signal circuit board 1238, which can simplify the internal circuit structure of the lawn mower 100. It should be noted that the operation components connected to the signal circuit board 1238 are not limited to the trigger 114, the first switch 112, the second switch 113 and the speed control knob 116, and the signal circuit board 1238 may also be connected to more operation components with different functions.

As a specific embodiment, the signal collecting means may include a plurality of signal circuit boards that respectively collect and process different signals, specifically, a first signal circuit board connected to the trigger 114; a second signal circuit board connected to the first switch 112 and the second switch 113; a third signal circuit board connected to the speed knob 116. As another specific embodiment, the second signal circuit board and the third signal circuit board may be combined into one circuit board.

As another specific embodiment, the lawn mower 100 has a bluetooth control function, and the operating device 11 further includes a bluetooth signal circuit board for receiving and processing bluetooth signals, and the bluetooth signal circuit board is also accommodated in the accommodating space formed by the operating device 11.

The operation device 11 further includes a signal line 1239, and the signal line 1239 is connected to the signal circuit board 1238, the bluetooth signal circuit board, and the main unit 12 and transmits signals from the signal circuit board 1238 or the bluetooth signal circuit board to the main unit 12, specifically, to each circuit board of the main unit 12 to control each function of the lawn mower 100.

The signal line 1239 includes a wire core for signal transmission, a protection tube 1239a surrounding the wire core, specifically, the protection tube 1239a is a corrugated tube, a cross section of the protection tube 1239a is circular, a diameter of the cross section of the protection tube 1239a is 5mm or more and 15mm or less, and in the present embodiment, the diameter of the cross section of the protection tube 1239a is 10 mm.

In this embodiment, the main body 12 further includes a self-propelled motor for driving the mower 100 to perform self-walking, and a main motor for driving the cutting member 125 to rotate about the axis of rotation. Accordingly, the main machine 12 further includes a first circuit board 1231 provided with a control circuit for controlling the rotation of the main motor, and a fifth circuit board 1236 provided with a driving circuit for driving the self-propelled motor to rotate, and the signal line 1239 is connected to the first circuit board 1231 and the fifth circuit board 1236, and transmits a control signal from the operating assembly to the first circuit board 1231 and the fifth circuit board 1236, so as to control the start and stop of the self-propelled motor and the main motor, and further control the self-propelled movement of the mower 100 and the cutting of the cutting element 125. It should be noted that the signal line 1239 is not limited to be connected to the first circuit board 1231 and the fifth circuit board 1236, and may also be connected to other circuit boards or circuit elements, and in fact, in the present embodiment, the host 12 further includes a functional circuit board, to which functional elements such as the lighting device 124 (see fig. 4) and the battery pack 1237 (see fig. 16) are connected, and the signal line 1239 is further connected to the functional circuit board. All circuit boards connected to the signal line 1239 can transmit signals to the signal line 1239 and can also receive signals transmitted to the signal line 1239 by other circuit boards, and then selectively process the received signals.

The host 12 includes functional elements such as a main motor, a travel motor, a battery pack 1237, and a lighting device 124. For the lawn mower 100 with bluetooth function, the main frame 12 further includes a bluetooth device, and the signal collecting device further includes a fourth signal circuit board, i.e., a bluetooth signal circuit board, which is mounted inside a receiving space formed around the handle 111. Specifically, the bluetooth signal circuit board can collect signals from the host 12 and the signal receiving device, set or update various parameters of the host 12, and transmit the parameters to various circuit boards connected to the functional elements so as to control various functional elements of the host 12, and here, it should be noted that the bluetooth device only transmits signals to the host 12 and does not directly control the lawn mower 100.

In this embodiment, the signal line 1239 extends downward from above the handle 111 around the connecting rod 1112, is partially fixed to the connecting rod 1112, extends into the maintenance cabin 1211, and is connected to each circuit board accommodated in the maintenance cabin 1211.

In addition, the signal circuit board 1238 and the signal line 1239 of the present embodiment may also be applied to other electric machines, such as snow plows, grass trimmers, and the like.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.