WO2020063811A1

WO2020063811A1 - Automatic lawnmower and method for controlling automatic lawnmower

Info

Publication number: WO2020063811A1
Application number: PCT/CN2019/108389
Authority: WO
Inventors: 焦石平; 查亚红; 赵凤丽; 周晓青
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2018-09-27
Filing date: 2019-09-27
Publication date: 2020-04-02
Also published as: CN111601498A; CN111601498B; CN211240850U; CN116849018A

Abstract

An automatic lawnmower (100) and a method for controlling the automatic lawnmower (100), the lawnmower (100) comprising: a body, provided with a shell (101) and a driving mechanism (102) for driving the body to move; a main lawnmowing unit (103) positioned below the shell (101) and having a first cutting area (108); a trimming unit (104) positioned on the outer side of the main lawnmowing unit (103) and having a second cutting area (112) different to the first cutting area (108), the side of the second cutting area (112) furthest from the first cutting area (108) at least being flush with the outer side face of the shell (101) and/or partially extending beyond the outer side face of the shell (101); and a protective cover, the protective cover being configured to at least cover the part of the trimming unit (104) positioned on the outer side of the shell (101) and/or the part flush with the outer side face of the shell (101) when the trimming unit (104) is in a working state. The present automatic lawnmower (100) and the method for controlling said automatic lawnmower (100) can prevent the trimming unit (104) from harming personnel during operation, increasing the safety of the automatic lawnmower (100).

Description

Automatic lawn mower and method for controlling the same

This application requires that the application date is September 27, 2018, the application number is 201811132143.2, and the invention name is "Automatic Lawn Mower and Method for Controlling the Automatic Lawn Mower" and that the application date is September 27, 2018, Application No. The priority of the Chinese patent application is 201821581582.7, the invention name is "Automatic Lawn Mower and Method for Controlling the Automatic Lawn Mower", the entire contents of which are incorporated herein by reference.

Technical field

The present invention generally relates to the safety protection technology of a lawn mower, in particular to an automatic lawn mower with a protective cover and a method for controlling the automatic lawn mower.

Background technique

At present, some garden tools are more commonly used in daily life. However, these tools often have sharp blades and other parts that are potentially harmful to the operator. Therefore, the safety of the operator must be considered when designing these tools, so that the possibility of injury caused by incorrect operation is minimized. Industry standards also specify safety regulations on some tools to ensure operator safety.

Automatic lawn mowers are a common garden tool. At present, most automatic lawn mowers cannot cut edge areas such as lawns well, making the overall effect of the lawnmuffing unsatisfactory. For this split grass cutter, a trimming unit is added to the main mowing unit, and the edge area of the lawn is cut by the trimming unit. However, since the trimming unit is usually disposed outside or at least partially outside the lawnmower casing, the trimmer unit is directly exposed to the exterior of the lawnmower casing when the trimming unit is in operation. Easy to cause harm to nearby people.

Summary of the Invention

In view of the foregoing, an automatic lawn mower and a method for controlling the automatic lawn mower according to the present invention are proposed to improve the safety of the lawn mower and avoid personal injury when the trimming unit works.

According to one aspect of the present invention, an automatic lawn mower is provided, including:

A fuselage, provided with a housing and a running mechanism driving the fuselage to move;

The main mowing unit is located under the casing and has a first cutting area;

A trimming unit is located outside the main mowing unit and has a second cutting area different from the first cutting area. A side of the second cutting area away from the first cutting area is at least connected to the shell. The outer side of the body is flush and / or partially beyond the outer side of the housing;

A protective cover configured to cover at least a portion of the trimming unit outside the casing and / or a portion flush with an outer side surface of the casing when the trimming unit is in a working state.

In an embodiment according to the present invention, the trimming unit can be automatically switched between a working state and a non-working state or a manual operation between the working state and the non-working state.

According to an embodiment of the present invention, a detection unit and a control unit are further included. The control unit is electrically connected to the detection unit and the trimming unit, and the control unit automatically controls an office according to a detection signal of the detection unit. The trimming unit automatically switches between working and non-working states.

According to an embodiment of the present invention, it further includes a control unit, an operation unit provided on the casing, and the control unit is electrically connected to the operation unit; when the operation unit receives a preset signal, all the The control unit controls the trimming unit to switch between a working state and a non-working state.

According to an embodiment of the present invention, it further includes a control unit and a wireless signal receiving unit; wherein the wireless signal receiving unit is configured to receive a preset signal transmitted from a user terminal; the control unit is electrically connected to the signal receiving unit. Connection; when the signal receiving unit receives the preset signal, the control unit controls the trimming unit to switch the working state and the non-working state.

In one embodiment according to the present invention, the preset signal is generated by a manual operation.

In an embodiment according to the present invention, the protective cover is configured to expose the trimming unit at least partially when the trimming unit is in a non-operating state.

In an embodiment according to the present invention, the protective cover includes: a movable cover configured to be switchable between an open state and a closed state, and when the movable cover is in a closed state, At least a portion of the trimming unit located outside the casing and / or a portion flush with an outer side surface of the casing is covered.

In an embodiment according to the present invention, the movable shield is configured to perform a rotational movement or a lifting movement along an axis direction of the trimming unit to switch between an open state and a closed state.

According to an embodiment of the present invention, the trimming unit includes a mowing part and a driving mechanism for driving the mowing part to rotate.

In one embodiment according to the present invention, the movable shield is configured to rotate around a drive shaft of the driving mechanism to switch between the open state and the closed state.

According to an embodiment of the present invention, it further includes a gear set connected to the driving shaft of the driving mechanism, the movable shield is connected to the gear set, and the driving mechanism drives the driving shaft when the driving shaft rotates. The gear set rotates, which in turn drives the movable shield to rotate.

In an embodiment according to the present invention, the movable shield is provided on the mowing part through a threaded connection, and is configured to be able to spirally rotate around the mowing part to be in the open state and the closed state. Switch between.

According to an embodiment of the present invention, a lifting mechanism provided on the casing is further included. The lifting mechanism includes a lifting motor and a transmission mechanism. The lifting motor drives the transmission mechanism to drive the movable shield to Lifting movement to switch between the open state and the closed state.

In one embodiment according to the present invention, the transmission mechanism is a link mechanism.

In one embodiment according to the present invention, the front end of the movable shield is configured as a comb structure.

In an embodiment according to the present invention, the protective cover further comprises: a fixed protective cover, the fixed protective cover is configured such that when the movable protective cover is in a closed state, the movable protective cover and the fixed protective cover Collectively cover the trimming units.

In one embodiment according to the present invention, the fixed shield is located inside the housing.

In one embodiment according to the present invention, the fixed shield is located at least partially outside the casing.

In one embodiment according to the present invention, the trimming unit is disposed on a front side, a left side, or a right side of the main mowing unit.

In an embodiment according to the present invention, the trimming unit is located outside the casing during operation.

In an embodiment according to the present invention, the trimming unit is provided on the outer side of the housing through a connection structure, the protective cover is connected to the housing through a link mechanism, and the link mechanism is configured to be capable of Rotate in the vertical direction to drive the protective cover to move in the vertical direction to cover the edge trimming unit when the edge trimming unit is in a working state.

According to an embodiment of the present invention, the trimming unit is disposed outside the housing through a mounting shaft, and the mounting shaft is configured as a telescopic structure. When in a retracted state, the trimming unit Retracted inside the casing; when the mounting shaft is in an extended state, the trimming unit protrudes to the outside of the casing.

In an embodiment according to the present invention, the trimming unit is located at least partially inside the casing when working.

According to an embodiment of the present invention, the trimming unit includes a mowing part and a driving mechanism for driving the mowing part to rotate. The mowing part includes a mowing element and is used for accommodating and fixing the mowing element. An accommodating portion, the accommodating portion is disposed on a drive shaft of the driving mechanism.

In an embodiment according to the present invention, the driving mechanism and the receiving portion are located at least partially inside the casing.

In one embodiment according to the present invention, the mowing element comprises a mowing rope or a flinger made of a metal material or a flexible material without a cutting edge.

In one embodiment according to the present invention, the protective cover has a cylindrical or semi-cylindrical structure.

According to another aspect of the present invention, a method for controlling mowing of an automatic lawn mower as described above is provided, including:

Switch the mower to the edge of the lawn;

When the trimming unit is in a working state, the control protective cover covers at least a portion of the trimming unit outside the casing and at least a portion of the trimming unit outside the casing and / or the trimming unit The outer side is flush.

According to the automatic lawn mower and the method for controlling the automatic lawn mower of the present invention, by adding a protective cover, and during the trimming work, the control protective cover covers at least the portion of the trimming unit located outside the casing and / Or the part which is flush with the outer side of the casing, so as to avoid harm to the personnel when the trimming unit works, and improve the safety of the automatic lawn mower.

BRIEF DESCRIPTION OF THE DRAWINGS

These and / or other aspects and advantages of the present invention will become clearer and easier to understand from the following detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, in which:

1A is a schematic top view of an automatic lawn mower according to a first embodiment of the present invention, in which a movable shield is in an opened state;

FIG. 1B is a schematic side view of the automatic lawn mower shown in FIG. 1A, wherein the movable shield is in an opened state; FIG.

1C is a schematic top view of an automatic lawn mower according to a first embodiment of the present invention, wherein the movable shield is in a closed state;

FIG. 1D is a schematic side view of the automatic lawnmower shown in FIG. 1C, wherein the movable shield is in a closed state; FIG.

2A is a schematic diagram of an arrangement of a trimming unit and a protective cover of an automatic lawn mower according to a first embodiment of the present invention, wherein the movable cover is in an opened state;

2B is a schematic diagram of an arrangement of a trimming unit and a protective cover of the automatic lawn mower according to the first embodiment of the present invention, wherein the movable cover is in a closed state;

3 is a schematic top view of an automatic lawn mower according to a second embodiment of the present invention, wherein the movable shield is in an opened state;

4A is a schematic top view of an automatic lawn mower according to a third embodiment of the present invention, wherein the movable shield is in an opened state;

4B is a schematic top view of an automatic lawn mower according to a third embodiment of the present invention, wherein the movable shield is in a closed state;

5A is a schematic front view of an automatic lawn mower according to a fourth embodiment of the present invention, wherein the protective cover is in an opened state;

5B is a schematic front view of an automatic lawn mower according to a fourth embodiment of the present invention, wherein the protective cover is in a closed state;

6A is a schematic front view of an automatic lawn mower according to a fifth embodiment of the present invention, in which a live protective cover is in an opened state;

6B is a schematic top view of the automatic lawnmower shown in FIG. 6A, wherein the protective cover is in an opened state;

6C is a schematic front view of an automatic lawn mower according to a fifth embodiment of the present invention, wherein the protective cover is in a closed state;

FIG. 6D is a schematic top view of the automatic lawnmower shown in FIG. 6C, wherein the protective cover is in a closed state.

detailed description

In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Before introducing, explain the meaning of related terms in this article.

The main mowing unit, the main mowing unit of the automatic lawn mower, is used to complete most mowing tasks.

The trimming unit is an auxiliary mowing part of the automatic lawn mower, and is used for mowing the area where the main mowing unit is inconvenient or impossible to cut, such as the edge area of a lawn.

"Located on the outside of the casing" means outside the occupied portion of the casing.

As mentioned earlier, most lawn mowers cannot completely cut the blade edge when cutting grass, that is, the mowing effect on the edge area of the lawn is not good, and the partial splitter, although equipped with a device that can cut the edge area Grass trimming unit, but usually the trimming unit is at least partly or completely exposed to the outside, which has hidden safety hazards and is easy to cause harm to the human body and the like. Based on this, the present invention proposes an automatic lawn mower, which is not only equipped with a trimming unit for mowing the edge area of a lawn, etc., but also has a protective cover to prevent the trimming unit from causing harm to the human body and the like, which improves the automatic Lawn mower safety.

The automatic lawn mower according to the embodiment of the present invention is described in detail below with reference to FIGS. 1A to 6D in order to better understand the present invention.

Example one

As shown in FIGS. 1A-1D, an automatic lawn mower 100 according to a first embodiment of the present invention includes a housing 101, a driving mechanism 102, a main mowing unit 103, a trimming unit 104, a fixed guard 105, and a movable guard. 106.

The casing 101 and the running mechanism 102 mounted on the casing constitute the body of the automatic lawn mower 100. The running mechanism 102 is used to drive the movement of the fuselage. The running mechanism includes, for example, a left wheel, a right wheel, and a front wheel, and a power mechanism (not shown) that drives the left wheel, the right wheel, and the front wheel to rotate to drive the fuselage. The mechanism is, for example, a motor, which can be powered by a battery.

The main mowing unit 103 is disposed below the casing 101 and is completely covered by the casing 101, so that it will not cause harm to the human body and the like when the main mowing unit 103 is working. Exemplarily, the main mowing unit 103 includes three symmetrically arranged blades 107, which can be rotated by a driving mechanism (for example, a motor) to perform mowing, and the three blades are formed as shown in FIGS. 1A and 1C. The first cutting area 108 shown in the figure, that is, the main mowing unit 103 can cut grass in the first cutting area 108, in other words, when plants such as grass are located in the first cutting area 108, they can be cut by the main The unit 103 cuts to complete the trimming of the main area of the lawn.

The trimming unit 104 is located outside the main mowing unit 103. For example, in this embodiment, the trimming unit 104 is located on the right side of the main mowing unit 103 and on the right edge region of the casing 101. It should be understood that although the trimming unit 104 is located on the right side of the main mowing unit 103 in this embodiment, in other embodiments according to the present invention, the trimming unit 104 may be located in front of the main mowing unit 103 Positions such as sides or left sides can be arranged as required, and are not limited to the manner given by the present invention.

As shown in FIGS. 1B and 1D, the trimming unit 104 includes a mowing unit and a driving mechanism 109 that drives the mowing unit to rotate. The mowing unit includes a mowing element 111 and a mechanism for accommodating the fixed mowing element 111. The accommodating portion 110, that is, the trimming unit 104 includes a driving mechanism 109, an accommodating portion 110, and a mowing element 111. The drive mechanism 109 is, for example, a power device such as a motor, and has a drive shaft that can rotate. The accommodating portion 110 is provided on the driving shaft of the driving mechanism 109 and is capable of rotating under the driving of the driving shaft. The mowing element 111 is mounted on the accommodating portion 110 and can rotate with the rotation of the accommodating portion 110 to perform mowing. Exemplarily, the mowing element 111 includes a rope or a blade. Exemplarily, the rope is made of a material such as nylon, and the blade is made of a metal material without a cutting edge or a flexible material. By adopting this manufacturing method, the potential damage of the mowing element 111 to the operator and the like can be reduced, and the situation of being accidentally cut by the mowing element can be avoided.

As shown in FIG. 1A and FIG. 1C, the mowing element 111 forms a second cutting area 112, that is, the trimming unit 104 can mow the lawn in the second cutting area 112. In other words, when plants such as grass are located in the second cutting area When inside 112, it can be cut by the trimming unit 104 to trim the edge area of the lawn.

Further, in this embodiment, the driving mechanism 109 and the accommodating portion 110 are generally located inside the casing 101, that is, the driving mechanism 109 and the accommodating portion 110 are mostly located inside (or inside) the casing 101, and only partially outside the casing 101 (Or outside). Accordingly, unlike the first cutting region 108 which is completely located inside the casing 101, the second cutting region 112 is partially located inside the casing 101 and partially located outside the casing 101. Therefore, if there is no necessary protective measure, there is a hidden safety hazard when the trimming unit 104 is in the working state, and it is easy to cause harm to the human body and the like. It should be understood that, in other embodiments, the driving mechanism 109 and the accommodating portion 110 may also be completely located inside the casing 101, or more portions may be located outside the casing 101, or entirely outside the casing 101, and accordingly, The second cutting region 112 may also change, but the side of the second cutting region 112 remote from the first cutting region 108 is at least flush with the outer side of the casing 101. As shown in FIG. 1A and FIG. 1C, in this embodiment, the second cutting area 112 partially exceeds the outer side (more specifically, the right side) of the housing 101, but in order to meet the working requirements of the trimming unit, In the embodiment, the side of the second cutting region 112 that is far from the first cutting region 108 (the right side of the second cutting region 112 in this embodiment) is at least the outer side of the housing 101 (in this embodiment, it is The right side of the case 101 is flush.

Further, in this embodiment, the trimming unit can be automatically switched between a working state and a non-working state or switched by means of a manual operation. Specifically, the automatic lawn mower 100 further includes a detection unit (not shown) and a control unit (not shown). The control unit automatically controls the trimming unit to automatically switch the working state according to a detection signal of the detection unit. And non-working status. In one embodiment, the detection unit includes a boundary detection sensor. When the boundary detection sensor detects a boundary, a signal is sent to the control unit, and the control unit controls the trimming unit 104 to start the working state. In another embodiment, the detection unit includes arrival detection Sensor, when the arrival detection sensor detects the base station, send a signal to the control unit, the control unit controls the trimming unit 104 to start the non-working state; in another embodiment, the detection unit includes an obstacle detection sensor, and when the obstacle detection sensor detects an obstacle When the object is moving, a signal is sent to the control unit, and the control unit controls the trimming unit 104 to start the non-working state. The trimming unit 104 can also switch between the working state and the non-working state by manual operation. In an embodiment, the automatic lawn mower 100 further includes a control unit, an operation unit provided on the casing, the control unit is electrically connected to the operation unit; and when the operation unit receives a preset signal, the control unit controls The unit controls the trimming unit to switch the working state and the non-working state. More specifically, the operation unit includes keys or buttons, and the corresponding control keys / buttons are manually operated to switch the working state and the non-working state of the trimming unit. In another embodiment, the automatic lawn mower 100 further includes a control unit and a wireless signal receiving unit, wherein the wireless signal receiving unit is configured to receive a preset signal transmitted from a user terminal; the control unit and the signal receiving unit Electrical connection; when the signal receiving unit receives the preset signal, the control unit controls the trimming unit to switch the working state and the non-working state. Specifically, the preset signal is generated by a manual operation, and the preset signal includes a start signal and / or a stop signal. When a start signal is generated through manual operation, the control unit controls the trimming unit to switch to a working state; when a stop signal is generated through manual operation, the control unit controls the trimming unit to switch to a non-working state.

In this embodiment, in order to avoid potential safety hazards when the trimming unit 104 is in a working state, a protective cover is provided for the trimming unit 104, and the protective cover is configured to cover at least the trimming unit when the trimming unit is in a working state. A portion of the trimming unit 104 located outside the casing 101 and / or a portion flush with an outer side surface of the casing 101.

Please refer to FIG. 1A to FIG. 1D again. In this embodiment, the protective cover includes a fixed cover 105 and a movable cover 106. For example, the fixed cover 105 and the movable cover 106 adopt a substantially semi-cylindrical structure. Can be made from hard materials. The fixed shield 105 is provided in such a manner that a portion thereof is located inside the casing 101 and a portion is located outside the casing 101. The movable shield 106 is configured to be switchable between an open state (as shown in FIGS. 1A and 1B) and a closed state (as shown in FIGS. 1C and 1D), and the trimming unit 104 is switched to the working state to In the closed state, at least a portion of the trimming unit 104 located outside the casing 101 and / or a portion flush with an outer side surface of the casing 101 is covered. The fixed shield 105 is configured to cover the trimming unit 104 together with the movable shield 106 and the fixed shield 105 when the movable shield 106 is in a closed state.

Further, when the movable shield 106 is in an open state, a part of the area of the trimming unit 104 may be exposed (that is, exposed outside the casing 101). For example, in the present invention, the protective cover may be configured to expose or partially expose the trimming unit 104 when the trimming unit 104 is in a non-working state. This can prevent the protective cover from touching the ground or obstacles when the automatic lawn mower is traveling, which will affect the passability of the automatic lawn mower.

Preferably, in this embodiment, as shown in FIG. 1C, the front end of the movable shield 106 is configured as a comb structure, so that the movable shield 106 can better comb the grass when the movable shield 106 is rotated from the open state to the closed state. Into the protective cover. Further, the gap between the combs of the makeup structure is less than 8.6 mm.

Please refer to FIGS. 1A to 1D again. In this embodiment, the movable shield 106 is configured to switch between the open state and the closed state in a rotating manner. More specifically, the movable shield 106 is configured to rotate around a driving shaft of the driving mechanism 109 to switch between the open state and the closed state.

The arrangement of the protective cover and the trimming unit in this embodiment is described in detail below with reference to FIGS. 2A and 2B.

As shown in FIGS. 2A and 2B, in this embodiment, the fixed cover 105 is disposed under the driving mechanism 109 and covers a part of the accommodation portion 110. The movable shroud 106 is provided on the driving shaft 113 of a driving mechanism (for example, a motor) 109 through a gear set 114 and a connecting member 115, and can be switched between an open state and a closed state under the driving of the driving shaft 113. Specifically, the gear set 114 includes a first gear 116, a second gear 117, a rotating shaft 118, and a third gear 119. The first gear 116 is fixed on the driving shaft 113 and can rotate with the driving shaft 113. The third gear 119 may Rotate freely around the drive shaft; the second gear 117 is a double gear that can rotate freely around the rotating shaft 118; the connector 115 is connected to the third gear 119 and the movable shield 106, and the movable shield 106 can be driven when the third gear 119 rotates Rotates around the drive shaft 113.

As shown in FIG. 2A, the movable shield 106 is in an open state. When the driving mechanism 109 is driven, the driving shaft 113 drives the first gear 116 to rotate, the first gear 116 drives the second gear 117 to rotate, and the second gear 117 drives the third The gear 119 rotates, and the third gear 119 drives the movable shield 106 around the driving shaft 113 through the connecting member 115 until the movable shield 106 rotates to completely cover the mowing element 111 as shown in FIG. 2B. At this time, the movable shield 106 is in a closed state; the driving mechanism 109 is reversed to realize the reset of the movable shield 106 to an open state.

It should be understood that although the transmission of the gear set 114 is a 2-stage transmission deceleration in this embodiment, in other embodiments, it may also be a multi-stage transmission deceleration, such as a 3-stage or 4-stage transmission deceleration.

Of course, it can be understood that the movable shield 106 can also perform a lifting movement along the axial direction of the trimming unit 104 to switch between an open state and a closed state. More specifically, the automatic lawn mower 100 further includes a lifting mechanism (not shown) provided on the casing 101. The lifting mechanism includes a lifting motor and a transmission mechanism. The lifting motor drives the transmission mechanism to drive the transmission mechanism. The movable shield 106 performs a lifting movement to switch between the open state and the closed state. In one embodiment, the transmission mechanism is a link mechanism. In another embodiment, the transmission mechanism is a rack and pinion mechanism.

The trimming process of the automatic lawn mower 100 according to this embodiment is, for example, when the automatic lawn mower 100 is running, the driving mechanism 109 stops running, the movable guard 106 is opened, and the automatic lawn mower 100 runs for a period of time according to a set program After the distance stops, the grass is gathered in the fixed shield 105, the movable shield 106 is closed, and the driving mechanism 109 starts to cut grass. After the mowing is completed, the driving mechanism 109 stops running, the movable shield 106 opens, and the automatic lawn mower 100 continues to run, so that the edge mowing function is achieved back and forth.

Example two

As shown in FIG. 3, the automatic lawn mower 200 according to the second embodiment of the present invention includes a housing 201, a traveling mechanism 202, a main mowing unit 203, a trimming unit 204, a fixed shield 205, and a movable shield 206. The structure of the automatic lawnmower 200 in this embodiment is substantially the same as that of the automatic lawnmower 100 shown in the first embodiment. The main lawnmower unit 203 has a first cutting area 207 in the housing 201, and the trimming unit 204 has at least The second cutting region 208 is partially located outside the housing 201. The difference from the automatic lawn mower 100 disclosed in the first embodiment is that in this embodiment, the fixed cover 205 is completely located inside the housing 201, and when the movable cover 206 is in an open state, it is located inside the housing 201 (As shown in FIG. 3), when the movable shield 206 is in a closed state, the movable shield 206 is located on the outer side of the housing, and the mowing element of the trimming unit is completely covered together with the fixed shield 205, at this time the trimming The mowing element of the unit cuts the grass, thereby avoiding injury to the human body and the like when the mowing element works.

As for the structure of each component of the automatic lawn mower, and the arrangement manner and driving manner of the fixed shroud 205 and the movable shroud 206 are the same as or similar to those described in the first embodiment, details are not described herein again.

Example three

As shown in FIGS. 4A and 4B, an automatic lawn mower 300 according to a third embodiment of the present invention includes a housing 301, a driving mechanism 302, a main mowing unit 303, a trimming unit 304, a fixed shield 305, and a movable shield 306. The structure of the automatic lawn mower 300 of this embodiment is substantially the same as that of the automatic lawn mower 100 shown in the first embodiment, except that, in this embodiment, the trimming unit 304 is installed at the place through the installation shaft 307. The outer side of the casing 301, that is, the trimming unit 304 is completely located outside the casing 301.

Preferably, in this embodiment, the mounting shaft 307 is configured as a telescopic structure. When in the retracted state, the trimming unit 304 is retracted inside the casing 301. When the mounting shaft 307 is in the extended state, the repairing shaft 307 is retracted. The side unit 304 protrudes to the outside of the casing 301. Of course, in this embodiment or other embodiments, the mounting shaft 307 may also be configured as a non-telescoping structure, such as a fixed structure, that is, the trimming unit 304 is always located outside the housing 301.

As for the structure of each component of the automatic lawn mower, and the arrangement manner and driving manner of the fixed shroud 305 and the movable shroud 306 are the same as or similar to those described in the first embodiment, details are not described herein again.

Embodiment 4

As shown in FIGS. 5A and 5B, an automatic lawn mower 400 according to a fourth embodiment of the present invention includes a housing 401, a running mechanism 402, a main mowing unit 403, a trimming unit 404, and a protective cover 405. The structure of the automatic lawn mower 400 of this embodiment is substantially the same as that of the automatic lawn mower 300 shown in the third embodiment. The difference is that in this embodiment, the protective cover 405 is provided as a whole and is no longer divided into movable protective covers. And the fixed shield, or in this embodiment, the shield 405 as a whole is a movable shield. In this embodiment, the protective cover 405 is configured to switch between the open state and the closed state in a lifting manner, and when in the closed state, the trimming unit 404 includes a driving mechanism and a mowing part, etc. All parts are completely covered. Exemplarily, in this embodiment, the protective cover 405 is configured to be capable of being raised and lowered along the axis of the trimming unit 404 to switch between the open state and the closed state. Exemplarily, in this embodiment, the trimming unit 404 is provided on the outer side of the housing 401 through the connection structure 407, the protective cover 405 has a cylindrical structure, and is connected to the housing 401 through the link mechanism 406. The link mechanism 406 It is configured to be able to rotate in the vertical direction to drive the protective cover to perform a lifting movement in the vertical direction to cover the edge trimming unit 404 when the edge trimming unit 404 is in a working state.

The structures of the casing 401, the driving mechanism 402, the main mowing unit 403, and the trimming unit 404 of the automatic lawn mower are the same as or similar to those of the previous embodiment, and are not repeated here. The driving method of the connecting rod may be a motor driving method, which is not specifically limited herein.

The trimming process of the automatic lawnmower 400 according to this embodiment is, for example, when the lawnmower is running, the driving mechanism of the trimming unit 404 stops running, the protective cover 405 is lifted by its driving device, and the lawnmower is set as After stopping for a certain distance after a predetermined program, the driving device controls the protective cover 405 to fall, completely covering the head area of the mowing unit of the trimming unit 404, and the driving mechanism of the trimming unit 404 starts to cut grass. After the mowing is completed, the protection The cover 405 is controlled to be lifted by its driving device, and the lawnmower continues to operate, thus reciprocating the edge mowing function.

Example 5

As shown in FIGS. 6A to 6D, an automatic lawn mower 500 according to a fifth embodiment of the present invention includes a housing 501, a running mechanism 502, a main mowing unit 503, a trimming unit 504, and a protective cover 505. The structure of the automatic lawn mower 500 of this embodiment is substantially the same as that of the automatic lawn mower 100 shown in the first embodiment. The main mowing unit 503 has a first cutting area 506 located in the housing 501, and the trimming unit 504 has at least The second cutting region 507 is partially located outside the casing 501. The difference from the automatic lawn mower 100 disclosed in the first embodiment is that in this embodiment, the protective cover 505 is integrally provided and is no longer divided into a movable cover and a fixed cover, or in this embodiment, the protective cover The cover 505 includes only a movable shield. In this embodiment, the protective cover 505 has a substantially semi-cylindrical structure, and is configured to switch between the open state and the closed state in a rotating manner. Specifically, the protective cover 505 is provided on the mowing part of the trimming unit 504 through a screw connection, and is configured to be able to spirally rotate around the mowing part to switch between the open state and the closed state.

The structures of the housing 501, the driving mechanism 502, the main mowing unit 503, and the trimming unit 504 of the automatic lawn mower are the same as or similar to those of the previous embodiment, and are not repeated here. The driving manner of the protective cover 505 may be driven by the driving mechanism of the trimming unit 504 similar to the first embodiment, or may be driven by a separate motor, which is not specifically limited herein.

The trimming process of the automatic lawnmower 400 according to this embodiment is, for example, when the lawnmower is running, the driving mechanism of the trimming unit 504 stops running, and the protective cover 505 is controlled to rotate to the trimming unit 504 by its driving device. In the upper part, the lawnmower stops after traveling a certain distance according to the set program. The driving device controls the protective cover 505 to rotate and fall, and covers the part of the trimming unit 504 outside the casing 501. The driving mechanism of the trimming unit 504 Start mowing. After the mowing is completed, the protective cover 505 is controlled to rotate and rise by its driving device, and the lawn mower continues to run, so as to achieve the edge mowing function.

The embodiments of the present invention have been described above, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the embodiments described. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

An automatic lawn mower includes:

A fuselage, provided with a housing and a running mechanism driving the fuselage to move;

The main mowing unit is located under the casing and has a first cutting area;

A trimming unit is located outside the main mowing unit and has a second cutting area different from the first cutting area. A side of the second cutting area away from the first cutting area is at least connected to the shell. The outer side of the body is flush and / or partially beyond the outer side of the housing;

A protective cover configured to cover at least a portion of the trimming unit outside the casing and / or a portion flush with an outer side surface of the casing when the trimming unit is in a working state.
The lawn mower according to claim 1, wherein the trimming unit is capable of automatically switching between a working state and a non-working state or switching between a working state and a non-working state by means of a manual operation.
The lawnmower according to claim 2, further comprising a detection unit, a control unit, and the control unit is electrically connected to the detection unit and the trimming unit, and the control unit is based on the detection by the detection unit Signal to automatically control the trimming unit to automatically switch between working and non-working states.
The lawn mower according to claim 2, further comprising a control unit, an operation unit provided on the housing, the control unit being electrically connected to the operation unit; the operation unit receiving a pre- When a signal is set, the control unit controls the trimming unit to switch the working state and the non-working state.
The lawn mower according to claim 2, further comprising a control unit and a wireless signal receiving unit; wherein the wireless signal receiving unit is configured to receive a preset signal transmitted from a user terminal; the control unit and the The signal receiving unit is electrically connected; when the signal receiving unit receives the preset signal, the control unit controls the trimming unit to switch the working state and the non-working state.
The lawn mower according to claim 4 or 5, wherein the preset signal is generated by a manual operation.
The lawnmower according to claim 2, wherein the protective cover is configured to expose the trimming unit at least partially when the trimming unit is in a non-working state.
The lawn mower according to claim 1, wherein the protective cover comprises:

A movable shield configured to be switchable between an open state and a closed state, and covering at least a portion of the trimming unit located outside the casing when the movable shield is in a closed state, and And / or a portion flush with the outer side of the casing.
The lawn mower according to claim 8, wherein the movable shroud is configured to perform a rotational movement or a lifting movement along an axis direction of the trimming unit to switch between an open state and a closed state.
The lawnmower according to claim 9, wherein the trimming unit comprises a mowing part and a driving mechanism for driving the mowing part to rotate.
The lawn mower according to claim 10, wherein the movable shroud is configured to rotate around a driving shaft of the driving mechanism to switch between the open state and the closed state.
The lawn mower according to claim 11, further comprising a gear set connected to a drive shaft of the drive mechanism, the movable shield is connected to the gear set, and the drive mechanism drives the drive When the shaft rotates, the gear set is rotated, thereby driving the movable shield to rotate.
The lawnmower according to claim 10, wherein the movable shroud is provided on the mowing part by a thread connection, and is configured to be able to spirally rotate around the mowing part to be in the open state. And the closed state.
The lawn mower according to claim 9, further comprising a lifting mechanism provided on the casing, the lifting mechanism comprising a lifting motor and a transmission mechanism, wherein the lifting motor drives the transmission mechanism to drive the The movable shield performs a lifting movement to switch between the open state and the closed state.
The lawn mower according to claim 14, wherein the transmission mechanism is a link mechanism.
The lawn mower according to claim 8, wherein a front end of the movable shield is configured as a comb-like structure.
The lawn mower according to claim 8, wherein the protective cover further comprises:

A fixed shield, the fixed shield is configured to cover the trimming unit together with the movable shield and the fixed shield when the movable shield is in a closed state.
The lawn mower according to claim 17, wherein the fixed shield is located inside the casing.
The lawn mower according to claim 17, wherein the fixed shield is located at least partially outside the casing.
The lawn mower according to claim 1, wherein the trimming unit is disposed on a front side, a left side, or a right side of the main mowing unit.
The lawn mower according to claim 1, wherein the trimming unit is located outside the casing when the trimming unit is in operation.
The lawnmower according to claim 21, wherein the trimming unit is provided on the outside of the casing through a connection structure, and the protective cover is connected to the casing through a link mechanism, and the connection The lever mechanism is configured to be capable of rotating in the vertical direction to drive the protective cover to move in the vertical direction to cover the edge trimming unit when the edge trimming unit is in a working state.
The lawnmower according to claim 21, wherein the trimming unit is disposed outside the casing through a mounting shaft, and the mounting shaft is configured as a telescopic structure, and when in a retracted state, The trimming unit is retracted inside the casing; when the mounting shaft is in an extended state, the trimming unit protrudes to the outside of the casing.
The lawn mower according to claim 1, wherein the trimming unit is located at least partially inside the casing when the trimming unit is in operation.
The lawn mower according to claim 1, wherein the trimming unit comprises a mowing part and a driving mechanism for driving the mowing part to rotate, and the mowing part comprises a mowing element and is used for accommodating and fixing The accommodating portion of the mowing element is disposed on a drive shaft of the driving mechanism.
The lawn mower according to claim 25, wherein the driving mechanism and the receiving portion are located at least partially inside the casing.
The lawn mower according to claim 25, wherein the mowing element comprises a rope or a blade made of a metal material or a flexible material without a cutting edge.
The lawn mower according to claim 1, wherein the protective cover has a cylindrical or semi-cylindrical structure.
A method for controlling mowing of an automatic lawn mower according to claim 1, comprising:

Switch the mower to the edge of the lawn;

When the trimming unit is in a working state, the control guard covers at least a portion of the trimming unit located outside the casing and / or a portion flush with an outer side surface of the casing.