CN211240850U

CN211240850U - Automatic mower

Info

Publication number: CN211240850U
Application number: CN201921628737.2U
Authority: CN
Inventors: 焦石平; 钟红风; 赵凤丽; 周晓青
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2018-09-27
Filing date: 2019-09-27
Publication date: 2020-08-14
Anticipated expiration: 2029-09-27
Also published as: CN111601498A; CN116849018A; CN111601498B; WO2020063811A1

Abstract

The utility model provides an automatic mower, mower includes: the device comprises a machine body, a control device and a control device, wherein the machine body is provided with a shell and a running mechanism for driving the machine body to move; the main mowing unit is positioned below the shell and is provided with a first cutting area; a trimming unit located outside the main mowing unit and having a second cutting area different from the first cutting area, a side of the second cutting area away from the first cutting area being at least flush with and/or partially beyond an outer side of the housing; a protective cover configured to cover at least a portion of the trimmer unit that is outside of the housing and/or flush with an outer side of the housing when the trimmer unit is in an operational state. According to the utility model discloses an automatic mower can avoid the deburring unit during operation to cause the injury to the personnel, has improved automatic mower's security.

Description

Automatic mower

Technical Field

The utility model relates to a lawn mower safety protection technique generally especially relates to an automatic lawn mower with protection casing.

Background

Currently, some garden tools are commonly used in everyday life. However, these tools often have sharp blades and other components that are potentially harmful to the operator, and therefore the safety of the operator must be considered in designing the tools so that the possibility of injury from faulty operation is minimized. Industry standards also specify safety designs on some tools to ensure operator safety.

The automatic mower is a common garden tool, and most of the existing automatic mowers cannot cut edge areas of lawns and the like well, so that the overall mowing effect is not satisfactory enough. For this reason, some lawn mowers add an edging unit to the main mowing unit, by which the edge area of the lawn is cut. However, since the trimmer unit is usually disposed outside or at least partially outside the mower housing, the trimmer unit is exposed directly to the outside of the mower housing when the trimmer unit is operated, which may easily cause damage to nearby persons.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned circumstances, provided the utility model discloses an automatic lawn mower to improve the security of lawn mower, avoid the deburring unit during operation to cause personnel's injury.

According to an aspect of the utility model, a provide an automatic mower, include:

the device comprises a machine body, a control device and a control device, wherein the machine body is provided with a shell and a running mechanism for driving the machine body to move;

the main mowing unit is positioned below the shell and is provided with a first cutting area;

a trimming unit located outside the main mowing unit and having a second cutting area different from the first cutting area, a side of the second cutting area away from the first cutting area being at least flush with and/or partially beyond an outer side of the housing;

a protective cover configured to cover at least a portion of the trimmer unit that is outside of the housing and/or flush with an outer side of the housing when the trimmer unit is in an operational state.

In an embodiment according to the invention, the trimmer unit can be switched between the operative state and the inoperative state automatically or by means of manual operation.

According to the utility model discloses an in the embodiment, still include detecting element, the control unit with detecting element and deburring unit electricity are connected, the control unit basis detecting element's detected signal, automatic control deburring unit automatic switch-over operating condition and non-operating condition.

In an embodiment according to the present invention, the device further comprises a control unit, an operation unit disposed on the housing, the control unit being electrically connected to the operation unit; when the operation unit receives a preset signal, the control unit controls the trimming unit to switch between a working state and a non-working state.

In an embodiment according to the present invention, the device further comprises a control unit, a wireless signal receiving unit; the wireless signal receiving unit is used for receiving a preset signal transmitted from a user terminal; the control unit is electrically connected with the signal receiving unit; when the signal receiving unit receives the preset signal, the control unit controls the trimming unit to switch between a working state and a non-working state.

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

In an embodiment according to the invention, the protective cover is configured to at least partially expose the trimmer unit when the trimmer unit is in the inoperative state.

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

In one embodiment according to the present invention, the movable hood is configured to perform a rotational movement or an elevating movement in an axial direction of the deburring unit to switch between an open state and a closed state.

In one embodiment according to the present invention, the trimmer unit includes a grass cutting portion and a drive mechanism for driving the grass cutting portion to rotate.

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

According to the utility model discloses an in the embodiment, still include with actuating mechanism's actuating shaft connection's gear train, movable guard shield with the gear train is connected, actuating mechanism drive when the actuating shaft is rotatory, drive the gear train is rotatory, and then drives movable guard shield is rotatory.

In an embodiment according to the present invention, the movable guard is provided on the grass cutting portion by a screw connection, and is configured to be spirally rotatable around the grass cutting portion to switch between the open state and the closed state.

According to the utility model discloses an in the embodiment, still including setting up elevating system on the casing, elevating system includes elevator motor, drive mechanism, the elevator motor drive mechanism drives movable guard shield is elevating movement, thereby open mode with switch between the closed condition.

In an embodiment according to the invention, the transmission mechanism is a linkage mechanism.

In an embodiment according to the 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 shroud configured to collectively cover the trimmer unit when the movable shroud is in a closed state.

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

In an embodiment according to the invention, the stationary shield is at least partially located outside the housing.

In an embodiment according to the invention, the trimmer unit is arranged at the front, left or right side of the main mowing unit.

In an embodiment according to the invention, the trimmer unit is operatively located outside the housing.

In an embodiment according to the present invention, the trimming unit is disposed outside the housing through a connecting structure, the protection cover is connected to the housing through a link mechanism, the link mechanism is configured to rotate in a vertical direction to drive the protection cover to move in the vertical direction, so that the trimming unit is covered when the trimming unit is in an operating state.

In an embodiment according to the present invention, the trimming unit is disposed outside the housing by a mounting shaft, and the mounting shaft is configured in a telescopic structure, and when in a retracted state, the trimming unit is retracted inside the housing; the trimmer unit extends outside the housing when the mounting shaft is in the extended state.

In an embodiment according to the invention, the trimmer unit is operatively located at least partly inside the housing.

In one embodiment according to the present invention, the trimming unit includes a grass cutting portion and a driving mechanism for driving the grass cutting portion to rotate, the grass cutting portion includes a grass cutting element and a receiving portion for receiving and fixing the grass cutting element, and the receiving portion is disposed on a driving shaft of the driving mechanism.

In an embodiment according to the invention, the drive mechanism and the receiving portion are located at least partially inside the housing.

In an embodiment according to the invention, the mowing element comprises a mowing cord or a flail made of a non-cutting-edge metallic or flexible material.

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

According to the utility model discloses an automatic mower, through increasing the protection casing to at the deburring during operation, the control protection casing covers at least the deburring unit is located the part in the casing outside and/or with the part that the lateral surface of casing flushes, thereby can avoid the deburring unit during operation to cause the injury to the personnel, improved automatic mower's security.

Drawings

These and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the following detailed description of the embodiments of the invention, taken in conjunction with the accompanying drawings of which:

FIG. 1A is a schematic top view of an robotic lawnmower according to a first embodiment of the invention, wherein the movable guard is in an open position;

FIG. 1B is a schematic side view of the robotic lawnmower shown in FIG. 1A, with the movable guard in an open position;

FIG. 1C is a schematic top view of an robotic lawnmower according to a first embodiment of the invention, wherein the movable guard is in a closed position;

FIG. 1D is a schematic side view of the robotic lawnmower of FIG. 1C with the movable guard in a closed position;

FIG. 2A is a schematic illustration of the arrangement of an edging unit and a protective cover of an robotic lawnmower according to a first embodiment of the present invention, wherein the movable cover is in an open state;

FIG. 2B is a schematic illustration of the arrangement of an edging unit and a protective cover of an robotic lawnmower according to a first embodiment of the present invention, wherein the movable cover is in a closed state;

FIG. 3 is a schematic top view of an robotic lawnmower according to a second embodiment of the invention, with the movable guard in an open position;

FIG. 4A is a schematic top view of an robotic lawnmower according to a third embodiment of the invention, wherein the movable guard is in an open position;

FIG. 4B is a schematic top view of an robotic lawnmower according to a third embodiment of the invention, wherein the movable guard is in a closed position;

FIG. 5A is a schematic front view of an robotic lawnmower according to a fourth embodiment of the invention, with the hood in an open position;

FIG. 5B is a schematic front view of an robotic lawnmower according to a fourth embodiment of the invention, wherein the hood is in a closed position;

FIG. 6A is a schematic front view of an robotic lawnmower according to a fifth embodiment of the invention, with the live guard in an open position;

FIG. 6B is a schematic top view of the robotic lawnmower shown in FIG. 6A, with the hood in an open position;

FIG. 6C is a schematic front view of an robotic lawnmower according to a fifth embodiment of the invention, wherein the hood is in a closed position;

FIG. 6D is a schematic top view of the robotic lawnmower of FIG. 6C with the hood in a closed position.

Detailed Description

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

Before the introduction, the meaning of the terms in this text is explained.

The main mowing unit is a main mowing component of the automatic mower and is used for completing most mowing tasks.

An edging unit, an auxiliary mowing component of the robotic lawnmower, is used to mow areas where the main mowing unit is inconvenient or unavailable, such as edge areas of a lawn.

By 'outside the housing' is meant outside the occupied portion of the housing.

As described above, most of the conventional lawn mowers cannot completely cut the edge of the blade during mowing, that is, the lawn mowers have a poor effect of mowing the edge area of the lawn or the like, and some of the conventional lawn mowers are provided with the trimming unit capable of mowing the edge area, but the trimming unit is usually at least partially or completely exposed to the outside, which causes a safety hazard and easily causes injury to the human body or the like. The utility model provides an automatic mower based on this, it both had been equipped with the deburring unit to mow the marginal area on lawn etc. still possess simultaneously and prevent that the deburring unit from causing the protection casing of injury to human etc. has improved automatic mower's security.

An automatic mower according to an embodiment of the present invention is described in detail below with reference to fig. 1A-6D for a better understanding of the present invention.

Example one

As shown in fig. 1A to 1D, the robotic lawnmower 100 according to the first embodiment of the present invention includes a housing 101, a travel mechanism 102, a main mowing unit 103, an edging unit 104, a fixed guard 105, and a movable guard 106.

The housing 101 and the travel mechanism 102 attached to the housing constitute a body of the robotic lawnmower 100. The driving mechanism 102 is used for driving the body to move, and includes, for example, a left wheel, a right wheel, a front wheel, and the like, and a power mechanism (not shown) for driving the left wheel, the right wheel, and the front wheel to rotate so as to drive the body to move, and the power mechanism is, for example, an electric motor, which may be powered by a battery.

The main mowing unit 103 is disposed below the housing 101, and is completely covered by the housing 101, so that the main mowing unit does not cause injury to a human body or the like when operating. Illustratively, the main mowing unit 103 comprises three symmetrically arranged blades 107, the three blades 107 can be driven by a driving mechanism (e.g. a motor) to rotate so as to mow grass, and the three blades form a first cutting area 108 as shown in fig. 1A and 1C, namely, the main mowing unit 103 can mow grass in the first cutting area 108, in other words, when plants such as grass are located in the first cutting area 108, the plants can be cut by the main mowing unit 103 so as to finish the trimming of the main area of the lawn.

The trimmer unit 104 is located outside the main mowing unit 103, and in this embodiment, the trimmer unit 104 is located on the right side of the main mowing unit 103 and on the right side edge region of the housing 101, for example. It should be understood that although in the present embodiment, the trimming unit 104 is located at the right side of the main mowing unit 103, in other embodiments according to the present invention, the trimming unit 104 may be located at the front side or the left side of the main mowing unit 103, etc., which may be arranged as needed, and is not limited to the manner presented in the present invention.

As shown in fig. 1B and 1D, the edge-trimmer unit 104 includes a grass-mowing portion including a grass-mowing element 111 and a housing portion 110 for housing and fixing the grass-mowing element 111, and a drive mechanism 109 for driving the grass-mowing portion to rotate, i.e., the edge-trimmer unit 104 includes the drive mechanism 109, the housing portion 110, and the grass-mowing element 111. The drive mechanism 109 is a power unit such as a motor having a rotatable drive shaft. The accommodating portion 110 is provided on a drive shaft of the drive mechanism 109 and can be rotated by the drive shaft. The grass cutting element 111 is attached to the housing 110 and can rotate with the rotation of the housing 110 to cut grass. Illustratively, the mowing element 111 comprises a string or blade. Illustratively, the cord is made of a material such as nylon and the blade is made of a non-cutting edge metallic material or a flexible material. By this means of manufacture, potential injury to the operator or the like by the mower member 111 is reduced, and accidental cutting by the mower member is avoided.

As shown in fig. 1A and 1C, the mowing element 111 forms a second cutting area 112, i.e., the trimmer 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 112, the plants can be cut by the trimmer unit 104, and trimming of the edge area of the lawn is completed.

Further, in the present embodiment, the driving mechanism 109 and the accommodating portion 110 are generally located inside the housing 101, i.e., the driving mechanism 109 and the accommodating portion 110 are mostly located inside (or inside) the housing 101, and only partially located outside (or outside) the housing 101. Accordingly, rather than the first cutting region 108 being entirely within the housing 101, the second cutting region 112 is partially within the housing 101 and partially outside the housing 101. Therefore, if no protective measures are necessary, there is a safety risk when the trimmer unit 104 is in the operating state, and it is easy to cause injury to a human body or the like. It should be understood that in other embodiments, the driving mechanism 109 and the receiving portion 110 may be located entirely within the housing 101, or more partially outside the housing 101, or entirely outside the housing 101, and accordingly, the second cutting region 112 may also vary, 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 housing 101. As shown in fig. 1A and 1C, in the present embodiment, the second cutting region 112 partially exceeds the outer side surface (more specifically, the right side surface) of the housing 101, but in order to meet the working requirements of the trimmer unit, in other embodiments, the side of the second cutting region 112 remote from the first cutting region 108 (the right side of the second cutting region 112 in the present embodiment) is at least flush with the outer side surface (the right side surface of the housing 101 in the present embodiment) of the housing 101.

Further, in the present embodiment, the trimmer unit can be automatically switched between the operating state and the non-operating state or switched by manual operation. Specifically, the robotic lawnmower 100 further comprises a detection unit (not shown), and a control unit (not shown) for automatically controlling the trimming unit to automatically switch between the operating state and the non-operating state according to a detection signal of the detection unit. In one embodiment, the detection unit includes a boundary detection sensor, and when the boundary detection sensor detects a boundary, the detection unit sends a signal to the control unit, and the control unit controls the trimming unit 104 to start a working state; in another embodiment, the detection unit comprises an arrival detection sensor, and when the arrival detection sensor detects the base station, the detection unit sends a signal to the control unit, and the control unit controls the trimming unit 104 to start a non-working state; in another embodiment, the detection unit includes an obstacle detection sensor that sends a signal to the control unit when the obstacle detection sensor detects an obstacle, and the control unit controls the trimmer unit 104 to initiate the non-operational state. Trimmer unit 104 is also manually switchable between an operative state and an inoperative state. In one embodiment, the robotic lawnmower 100 further comprises a control unit, an operating unit disposed on the housing, the control unit being electrically connected to the operating unit; when the operation unit receives a preset signal, the control unit controls the trimming unit to switch between a working state and a non-working state. More specifically, the operation unit comprises keys or buttons, and the switching between the working state and the non-working state of the trimming unit is realized by manually operating the corresponding control keys/buttons. In another embodiment, the robotic lawnmower 100 further comprises a control unit, 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 with the signal receiving unit; and when the signal receiving unit receives the preset signal, the control unit controls the trimming unit to switch between a working state and a non-working state. Specifically, the preset signal is generated by manual operation, and the preset signal comprises a starting signal and/or a stopping signal. When a starting signal is generated through manual operation, the control unit controls the trimming unit to be switched to a working state; when the stop signal is generated through manual operation, the control unit controls the trimming unit to be switched to a non-working state.

In order to avoid safety hazards when the trimmer unit 104 is in the operative state, in this embodiment, the trimmer unit 104 is provided with a protective cover configured to cover at least a portion of the trimmer unit 104 that is outside the housing 101 and/or flush with the outer side of the housing 101 when the trimmer unit is in the operative state.

Referring again to fig. 1A to 1D, in the present embodiment, the shield includes a fixed shield 105 and a movable shield 106, and the fixed shield 105 and the movable shield 106 are, for example, substantially semi-cylindrical structures, which may be made of hard materials. The fixed shroud 105 is arranged in such a way that it is partly inside the housing 101 and partly outside the housing 101. The movable cover 106 is configured to be capable of being switched between an open state (shown in fig. 1A and 1B) and a closed state (shown in fig. 1C and 1D), and switched to the closed state when the trimmer unit 104 is in the operating state, so as to cover at least a portion of the trimmer unit 104 located outside the housing 101 and/or a portion flush with the outer side surface of the housing 101. The fixed shroud 105 is configured such that the movable shroud 106 and the fixed shroud 105 together cover the trimmer unit 104 when the movable shroud 106 is in the closed state.

Further, when the movable hood 106 is in the open state, a partial area of the trimmer unit 104 may be exposed (i.e., exposed outside the housing 101). Illustratively, in the present invention, the protective cover may be configured to expose or partially expose the trimmer unit 104 when the trimmer unit 104 is in the non-operational state. Therefore, the situation that the protective cover touches the ground or an obstacle when the automatic mower moves ahead to influence the passing performance of the automatic mower can be avoided.

Preferably, in this embodiment, as shown in fig. 1C, the front end of the movable hood 106 is configured as a comb-like structure, so that the movable hood 106 can better comb the grass into the interior of the hood when being rotated from the open state to the closed state. Further, the gaps between the combs of the dressing structure are less than 8.6 mm.

Referring again to fig. 1A-1D, in the present embodiment, the movable shield 106 is configured to be rotationally switched between the open state and the closed state. More specifically, the movable shield 106 is configured to rotate about a drive shaft of the drive mechanism 109 to switch between the open state and the closed state.

The arrangement of the shield cover and the trimmer unit in the present embodiment will be described in detail with reference to fig. 2A and 2B.

As shown in fig. 2A and 2B, the fixed shield 105 is disposed below the driving mechanism 109 in the present embodiment, and covers a part of the accommodating portion 110. The movable hood 106 is provided on a drive shaft 113 of the drive mechanism (e.g., motor) 109 through a gear train 114 and a link 115, and can be switched between open and closed states by the drive of the drive 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, wherein the first gear 116 is fixed on the driving shaft 113 and can rotate with the driving shaft 113, and the third gear 119 can freely rotate around the driving shaft; the second gear 117 is a duplicate gear and can freely rotate around a rotating shaft 118; the connecting member 115 is connected to the third gear 119 and the movable shield 106, and when the third gear 119 rotates, the movable shield 106 rotates around the driving shaft 113.

As shown in fig. 2A, 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, the second gear 117 drives the third gear 119 to rotate, and the third gear 119 drives the movable guard 106 to rotate around the driving shaft 113 through the connecting member 115, until the movable guard 106 rotates to completely enclose the mowing element 111 as shown in fig. 2B, which is the closed state of the movable guard 106; the movable shield 106 is returned to the open position by reversing the drive mechanism 109.

It should be appreciated that while the gear of the gear set 114 is a 2-speed reduction gear in the present embodiment, other multi-speed reduction gears are possible in other embodiments, such as a 3-speed or 4-speed reduction gear.

Of course, it will be appreciated that movable shield 106 may also be moved up and down along the axis of trimmer unit 104 to switch between the open and closed positions. More specifically, the robotic lawnmower 100 further comprises a lifting mechanism (not shown) disposed on the housing 101, wherein the lifting mechanism comprises a lifting motor and a transmission mechanism, and the lifting motor drives the transmission mechanism to drive the movable guard 106 to move up and down, so as to switch between the open state and the closed state. In one embodiment, the transmission mechanism is a linkage mechanism, and in another embodiment, the transmission mechanism is a rack and pinion mechanism.

The trimming process of the robotic lawnmower 100 according to the present embodiment is, for example: when the automatic mower 100 runs, the driving mechanism 109 stops running, the movable shield 106 is opened, the automatic mower 100 runs for a certain distance according to a set program and then stops, grass is gathered in the fixed shield 105, the movable shield 106 is closed, the driving mechanism 109 starts to mow, after the grass cutting is finished, the driving mechanism 109 stops running, the movable shield 106 is opened, the automatic mower 100 continues to run, and the edge mowing function is achieved in a reciprocating mode.

Example two

As shown in fig. 3, the robotic lawnmower 200 according to the second embodiment of the present invention includes a housing 201, a travel mechanism 202, a main mowing unit 203, an edging unit 204, a fixed guard 205, and a movable guard 206. The robotic lawnmower 200 of this embodiment is substantially the same as the robotic lawnmower 100 of the first embodiment, with the main mower unit 203 having a first cutting area 207 located within the housing 201, and the trimmer unit 204 having a second cutting area 208 located at least partially outside the housing 201. The difference from the automatic lawn mower 100 disclosed in the first embodiment is that in the present embodiment, the fixed guard 205 is located completely inside the housing 201, when the movable guard 206 is in the open state, it is located inside the housing 201 (as shown in fig. 3), when the movable guard 206 is in the closed state, the movable guard 206 is located outside the housing and completely encloses the mowing element of the trimmer unit together with the fixed guard 205, and the mowing element of the trimmer unit mows, so as to avoid injury to human body and the like when the mowing element works.

The structure of the components of the robotic lawnmower, and the arrangement and driving of the fixed guard 205 and the movable guard 206 are the same as or similar to those described in the first embodiment, and will not be described again.

EXAMPLE III

As shown in fig. 4A and 4B, the robotic lawnmower 300 according to the third embodiment of the present invention includes a housing 301, a travel mechanism 302, a main mowing unit 303, an edging unit 304, a fixed guard 305, and a movable guard 306. The robotic lawnmower 300 of this embodiment is substantially the same as the robotic lawnmower 100 of the first embodiment, except that in this embodiment, the trimmer unit 304 is disposed outside the housing 301 via the mounting shaft 307, i.e., the trimmer unit 304 is completely outside the housing 301.

Preferably, in the present embodiment, the mounting shaft 307 is configured in a telescopic structure, and the trimmer unit 304 is retracted inside the housing 301 when in the retracted state; the trimmer unit 304 protrudes outside the housing 301 when the mounting shaft 307 is in the extended state. Of course, in this or other embodiments, the mounting shaft 307 may also be configured in a non-telescoping configuration, such as a fixed configuration, i.e., the trimmer unit 304 is always located outside of the housing 301.

The structure of the components of the robotic lawnmower, and the arrangement and driving of the fixed shroud 305 and the movable shroud 306 are the same as or similar to those described in the first embodiment, and will not be described again.

Example four

As shown in fig. 5A and 5B, an automatic lawn mower 400 according to a fourth embodiment of the present invention includes a housing 401, a travel mechanism 402, a main mowing unit 403, an edge trimmer unit 404, and a protective cover 405. The robotic lawnmower 400 of this embodiment is substantially the same as the robotic lawnmower 300 of the third embodiment, except that in this embodiment, the protective hood 405 is integrally provided and is not divided into a movable hood and a fixed hood, or in this embodiment, the protective hood 405 is integrally provided with the movable hood. In the present embodiment, the protective cover 405 is configured to be switched between the open state and the closed state in an ascending and descending manner, and when in the closed state, completely covers all the portions of the edge trimmer unit 404 including the drive mechanism, the grass cutting portion, and the like. Illustratively, in the present embodiment, the protective cover 405 is configured to be liftable along the axis of the edge trimmer unit 404 to switch between the open state and the closed state. Illustratively, in the present embodiment, the trimmer unit 404 is disposed outside the housing 401 through a connecting structure 407, the protective cover 405 is a cylindrical structure and is connected to the housing 401 through a link mechanism 406, and the link mechanism 406 is configured to be capable of rotating in the vertical direction to drive the protective cover to perform an elevating movement in the vertical direction so as to cover the trimmer unit 404 when the trimmer unit 404 is in the working state.

The structures of the housing 401, the traveling mechanism 402, the main mowing unit 403 and the trimming unit 404 of the robotic lawnmower are the same as or similar to those of the previous embodiments, and thus, the detailed description thereof is omitted. The driving mode of the connecting rod may be a motor driving mode, and the like, and is not limited specifically herein.

The trimming process of the robotic lawnmower 400 according to this embodiment is, for example: when the mower runs, the driving mechanism of the trimming unit 404 stops running, the protective cover 405 is lifted by the driving device, the mower stops after running for a certain distance according to a set program, the driving device controls the protective cover 405 to fall down to completely cover the head area of the mowing part of the trimming unit 404, the driving mechanism of the trimming unit 404 is started to mow, after grass mowing is finished, the protective cover 405 is lifted by the driving device, the mower continues running, and the edge mowing function is achieved in a reciprocating mode.

EXAMPLE five

As shown in fig. 6A to 6D, an automatic lawnmower 500 according to a fifth embodiment of the present invention includes a housing 501, a travel mechanism 502, a main mowing unit 503, an edge trimmer unit 504, and a protective cover 505. The robotic lawnmower 500 of this embodiment is substantially the same as the robotic lawnmower 100 of the first embodiment, with the main mowing unit 503 having a first cutting area 506 located within the housing 501 and the trimmer unit 504 having a second cutting area 507 located at least partially outside the housing 501. The difference from the robotic lawnmower 100 of the first embodiment is that in this embodiment, the hood 505 is integrally provided and is no longer divided into a movable hood and a fixed hood, or in this embodiment, the hood 505 includes only a movable hood. In the present embodiment, the shield 505 has a substantially semi-cylindrical structure configured to be rotationally switched between the open state and the closed state. Specifically, the protective cover 505 is provided on the grass cutting portion of the trimmer unit 504 by a screw connection, and is configured to be spirally rotatable around the grass cutting portion to be switched 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 mower are the same as or similar to those of the previous embodiments, and are not described again. The drive of shield 505 may be driven by the drive mechanism of edger unit 504, similar to the embodiment, or may be driven by a separate motor, which is not specifically limited herein.

The trimming process of the robotic lawnmower 400 according to this embodiment is, for example: when the mower runs, the driving mechanism of the trimming unit 504 stops running, the protective cover 505 is controlled by the driving device to rotate to the upper part of the trimming unit 504, the mower stops after running for a certain distance according to a set program, the driving device controls the protective cover 505 to rotate and fall, the part, located on the outer side of the shell 501, of the trimming unit 504 is covered, the driving mechanism of the trimming unit 504 starts to mow, after the grass cutting is finished, the protective cover 505 is controlled by the driving device to rotate and rise, the mower continues to run, and therefore the edge mowing function is achieved in a reciprocating mode.

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

Claims

1. An automatic lawn mower, characterized in that the lawn mower comprises:

2. A lawnmower as claimed in claim 1, wherein the trimmer unit is capable of switching between the operative and inoperative states either automatically or by manual operation.

3. The mower according to claim 2, further comprising a detection unit and a control unit, wherein the control unit is electrically connected with the detection unit and the trimming unit, and the control unit automatically controls the trimming unit to automatically switch between an operating state and a non-operating state according to a detection signal of the detection unit.

4. The mower according to claim 2, further comprising a control unit, an operating unit provided on said housing, said control unit being electrically connected to said operating unit; when the operation unit receives a preset signal, the control unit controls the trimming unit to switch between a working state and a non-working state.

5. The lawnmower according to claim 2, further comprising a control unit, a wireless signal receiving unit; the wireless signal receiving unit is used for receiving a preset signal transmitted from a user terminal; the control unit is electrically connected with the signal receiving unit; when the signal receiving unit receives the preset signal, the control unit controls the trimming unit to switch between a working state and a non-working state.

6. A lawnmower according to claim 4 or claim 5, wherein the preset signal is generated by manual operation.

7. The mower of claim 2 wherein said protective cover is configured to at least partially expose said trimmer unit when said trimmer unit is in an inoperative condition.

8. The lawnmower of claim 1, wherein the protective cover comprises:

a movable hood configured to be switchable between an open state and a closed state, and to cover at least a portion of the trimmer unit located outside the housing and/or a portion flush with an outer side surface of the housing when the movable hood is in the closed state.

9. The mower of claim 8 wherein the movable guard is configured to move rotationally or up and down along the axis of the trimmer unit to switch between an open state and a closed state.

10. The lawnmower of claim 9, wherein the trimmer unit comprises a grass cutting portion and a drive mechanism for driving the grass cutting portion to rotate.

11. The lawnmower of claim 10, wherein the movable guard is configured to rotate about a drive shaft of the drive mechanism to switch between the open state and the closed state.

12. The lawnmower of claim 11, further comprising a gear train coupled to the drive shaft of the drive mechanism, wherein the movable guard is coupled to the gear train, and wherein the drive mechanism drives the drive shaft to rotate, thereby rotating the gear train and the movable guard.

13. The mower of claim 10, wherein the movable guard is disposed on the mower section by a threaded connection and is configured to be helically rotatable about the mower section to switch between the open state and the closed state.

14. The mower of claim 9, further comprising a lifting mechanism disposed on the housing, wherein the lifting mechanism comprises a lifting motor and a transmission mechanism, and the lifting motor drives the transmission mechanism to move the movable guard up and down so as to switch between the open state and the closed state.

15. The mower of claim 14 wherein the transmission mechanism is a linkage mechanism.

16. The mower of claim 8 wherein the front end of the movable guard is configured in a comb-like configuration.

17. The lawnmower of claim 8, wherein the protective cover further comprises:

a fixed shroud configured to collectively cover the trimmer unit when the movable shroud is in a closed state.

18. The mower of claim 17 wherein the fixed guard is located inside the housing.

19. The mower of claim 17, wherein the fixed guard is at least partially located outside of the housing.

20. The mower of claim 1 wherein the trimmer unit is disposed on a front, left or right side of the main mower unit.

21. The lawnmower of claim 1, wherein the trimmer unit is operatively located outside of the housing.

22. The lawnmower of claim 21, wherein the trimmer unit is disposed outside the housing via a linkage, and the protective cover is coupled to the housing via a linkage configured to rotate in a vertical direction to move the protective cover in the vertical direction to cover the trimmer unit when the trimmer unit is in the operating state.

23. The lawnmower of claim 21, wherein the trimmer unit is disposed outside of the housing by a mounting shaft, and the mounting shaft is configured in a telescoping configuration, the trimmer unit being retracted inside the housing when in the retracted state; the trimmer unit extends outside the housing when the mounting shaft is in the extended state.

24. The mower of claim 1 wherein said trimmer unit is at least partially positioned inside said housing when in operation.

25. The lawnmower according to claim 1, wherein the trimmer unit includes a grass cutting portion including a grass cutting element and a housing for housing and fixing the grass cutting element, and a drive mechanism that drives the grass cutting portion to rotate, the housing being provided on a drive shaft of the drive mechanism.

26. The lawnmower of claim 25, wherein the drive mechanism and the receptacle are at least partially inside the housing.

27. The mower of claim 25 wherein the mowing element comprises a cord or a blade made of a non-cutting edge metallic or flexible material.

28. The lawnmower of claim 1, wherein the guard is of a cylindrical or semi-cylindrical configuration.