Husqvarna Patente

The present disclosure relates to a robotic lawn mower interaction station (200) adapted to receive a robotic lawn mower (100), where the interaction station (200) comprises a charging tower (201) that has a charging transmission arrangement (210) and is positioned on a ground plate (202). The interaction station (200) further comprises at least one marker (220, 221, 222) that is positioned to be readable by a robotic lawn mower camera arrangement (170) when the robotic lawn mower (100) is approaching the interaction station (200). Furthermore, the marker (220, 221, 222) is positioned behind a protective layer (223, 224) having such properties that the marker (220, 221, 222) is readable by the robotic lawn mower camera arrangement (170), through the protective layer (223, 224).

A filament trimmer head (100) comprises a spool holder (102) with a spool (104) mounted inside, covered by a spool cover (106) with a circular through hole (138). A bump button (126) via it's stem (128) formed on the upper surface (122) of the spool (104), extends outward through the circular through hole (138). Additionally, a first coupling feature (130) formed on the upper surface (122) of the spool (104) extends towards the bump button (126). The filament trimmer head (100) is characterized in that a seal (134) is configured to engage and surround the stem (128) of the bump button (126). The seal (134) extends from the inner side (150) of the spool cover (106) facing the spool (104) along the stem (128) of the bump button (126) to the upper surface (122) of the spool (104). The seal (134) also comprises a second coupling feature (132) configured to couple with the first coupling feature (130) formed on the upper surface (122) of the spool (104), further allowing the seal (134) and the spool (104) to cooperate therewith.

The present disclosure relates to a robotic lawn mower interaction station (200, 200') adapted to receive an oncoming robotic lawn mower (100, 100'). The interaction station (200, 200') comprises a charging tower (201) with a charging transmission arrangement (210) that is adapted to provide a charge current, delivered from a station charging unit (202), to a charging reception arrangement (156) of a docked robotic lawn mower (100, 100'). The interaction station (200, 200') comprises a reception ground plate (203, 203') that extends from the charging tower (201) towards a frontmost part (204), comprised in an entering edge (205). The ground plate (203, 203') is constituted by a plate part (206, 206') and one ridge part (207, 207') that extends a certain ridge height (h) from the plate part (206, 206').

A method for use in robotic lawnmower system comprising a robotic lawnmower (100) arranged to operate in an outdoor operational area (205), and the robotic lawnmower comprising controller (110), a memory (120), a navigation sensor (175), one or more sensors (180, 185), the memory (120) being configured to store a map application (120A) and to store data regarding sensor readings, and wherein the method comprises causing the robotic lawnmower (100) to traverse the operational area, and while doing so receiving sensor readings causing a data model of the operational area to be generated based on the stored sensor readings and causing an artificial intelligence scheduling module to be trained on the data model according to one or more operating criteria whereby the artificial intelligence scheduling module is trained to schedule operation of the robotic lawnmower in the operational area based on the sensor readings and with the aim of fulfilling the one or more operating criteria

The present disclosure relates to a robotic lawn mower (100) comprising a body (140), a control unit (110), at least one rotatable grass cutting disc (160) having a disc rotation axle (165), at least one pair of drive wheels (131A, 131B), and at least one further wheel (130A, 130B), where the wheels (130A, 130B; 131A, 131B) are adapted to contact ground (G) during normal operation. The robotic lawn mower (100) further comprises a camera arrangement (170) having a field of view (171, 171', 171") with a certain extent (178, 178', 178"), where the camera arrangement (170) comprises a lens (172) and an image sensor (173), and is attached to a chassis part (145) that is movable (M) relative to a body part (141) comprised in the body (140). The lens (172) faces an aperture (142, 342) that at least partly is formed in the body part (141), the extent (178, 178', 178") of the field of view (171, 171', 171") being changed when the body part (141) is moved relative to the chassis part (145) such that the position or size of the aperture (142, 342) is changed.

A hose reel (210) for storing a hose (202) comprises a reel body (212) onto which the hose (202) is woundable. The reel body (212) comprises a central water axle (214) and an outer surface (216) having a surface radius (D1). The hose reel (210) further comprises at least one side disc (218) formed at one lateral end of the reel body (212), and a water connection (215) for connecting the hose (202) to the central water axle (214). The water connection (215) extends from the central water axle (214) and is positioned adjacent to the at least one side disc (218). The hose reel (210) is characterized in that the hose reel (210) comprises a hose guiding structure (220) formed on the side disc (218). The hose guiding structure (220) is configured to guide an end portion (203) of the hose next to the water connection (215), on a guiding distance (D2) and afterwards on the outer surface (216), with the guiding distance (D2) being larger than the surface radius (D1).

A water connector assembly (100) comprises a first water connection device (200), and a second water connection device (300) removably couplable with the first water connection device (200). The first water connection device (200) comprises at least one first support element (216) and at least one second support element (218). The water connector assembly (100) is characterized in that the at least one first support element (216) and the at least one second support element (218) are configured to respectively inhibit and allow the decoupling between the first water connection device (200) and the second water connection device (300) when a lateral force (P) acting substantially perpendicular to an extension of the at least one first support element (216) and at the least one second support element (218) respectively is applied on the first water connection device (200).

A cover (106) is configured for at least partially covering an opening (104) of a lid (102), which is further configured to cover a container, in particular a liquid reservoir. The lid (102) has an area (A1), and the cover (106) has an area (A2) that at least partially covers the opening (104) of the lid (102). The cover (106) is movable relative to the lid (102) and is configured to move away from and towards the container within the opening (104) of the lid (102). The cover (106) is characterized in that the cover (106) comprises a plurality of arms (118) extending from the cover (106) into the container along a circumference of the cover (106). At least one of the plurality of arms (118) comprises at least one first protrusion (120); and the at least one first protrusion (120) is spaced apart from the cover (106) by a distance (D1).

A cutting assembly (1, 1', 1", 2, 10) is disclosed configured to be mounted to a lawnmower (3) to cut vegetation. The cutting assembly (1, 1', 1", 2, 10) comprises a mounting unit (4) configured to be mounted to a lawnmower body (3') of the lawnmower (3) and a cutting arrangement (5) comprising a cutting unit (6) and three or more ground engaging members (7, 7', 7", 7"') each configured to abut against a ground surface (Gs) in a ground engaging plane (Gp) to maintain a distance (d1) between the cutting unit (6) and the ground surface (Gs) during operation of the cutting assembly (1, 1', 1", 2, 10). The cutting assembly (1, 1', 1", 2, 10) further comprises a connection arrangement (8) comprising a pivot mechanism (9) pivotally attaching the cutting arrangement (5) to the mounting unit (4) around multiple axes (ax1, ax2) each being transversal to a normal (N) of the ground engaging plane (Gp). The present disclosure further relates to a pair of cutting assemblies (10, 10') and a lawnmower (3) comprising one or more cutting assemblies (1, 1', 1", 2, 10, 10').

Hand-held power tool (100) comprising a crankcase scavenged combustion engine (110) arranged to drive a work tool (120),wherein a fuel injector (230) of the equipment (100) is arranged upstream of and distanced from the combustion engine (110),wherein the hand-held power tool (100) comprises first and second airhead channels (310, 320) arranged to guide pure air to the combustion engine (110), andwherein the fuel injector (230) is intersected by a vertical plane separating the first and second airhead channels (310, 320), and/or where the fuel injector (230) is arranged in connection to at least one airhead channel (310, 320).

The present disclosure relates to a wheel cleaning device (150, 150A; 250) adapted to be attached to a swivelable wheel (130; 130A, 130B) of a robotic lawn mower (100). The swivelable wheel (130; 130A, 130B) comprises a rotatable wheel part (132), a wheel shield (133) at a center of the wheel part (132), and a holding arm (134) that is adapted to connect the wheel part (132) to the robotic lawn mower (100) in a swivelable manner, extending into the wheel part (132) via the wheel shield (133) that is fixed relative the holding arm (134). The wheel cleaning device (150, 250) comprises a cleaner holder (151, 251) that is adapted to be attached to a side of the wheel part (132), radially displaced from the wheel shield (133), and a debris removal protrusion (152, 252) that has a longitudinal extension (E) and is adapted to extend from the cleaner holder (151, 251) towards the wheel shield (133) along its longitudinal extension (E) when mounted.

The present disclosure relates to a robotic lawn mower (100) adapted for a forward travelling direction (D) and a reverse travelling direction (R) and comprising a body (140) that has a frontmost end (101) that is adapted to face the forward travelling direction (D) and ground (G) during normal operation, and a rearmost end (102) that is adapted to face the reverse travelling direction (R) and ground (G) during normal operation, the robotic lawn mower (100) further comprising at least one pair of drive wheels (131A), at least one further wheel (130B), and at least one rotatable grass cutting disc (160) having a disc rotation axle (165), wherein the robotic lawn mower (100) further comprises a mat arrangement (150) that in turn comprises a mat (151) that is positioned between the frontmost end (101) and the rearmost end (102), having a mainly longitudinally running first edge (157) that runs mainly across the forward running direction (D) and is adapted to be the part of the mat (151) that is closest to ground (G) during normal operation, where the mat arrangement (150) comprises a mat attachment arrangement (152A, 152B, 153A, 154B, 156) that connects the mat (151) to the body (140) in a movable manner.

A hand-held power tool (100) comprising a crankcase scavenged combustion engine (110) arranged to drive a work tool (120), where a first mass (170) of the equipment (100) comprises the combustion engine (110), where a second mass (180) of the equipment (100) is vibrationally decoupled from the first mass (170) by means of one or more resilient members (160), where a fuel pump (280) is arranged to deliver fuel to a fuel injector (230), where the fuel injector (230) is configured to provide a controlled amount of the fuel into an air and fuel intake flow (210) of the combustion engine (110), where the fuel injector (230) is arranged in the second mass (180) and thus separated from the first mass (170) by the one or more resilient members (160).

A system for charging of a self-propelled robotic lawnmower (1), includes a charging station (2) and a robotic lawnmower (1). The charging station (2) includes a pivoting head (4). The charging station (2) and the robotic lawnmower (1) comprise a presence sensor (7), a sensed feature (8),and second charging connectors (6). The pivoting head (4) and the robotic lawnmower (1) form an enclosure (E) around the charging connectors (6) during charging. The presence sensor (7) and the sensed feature (8) detect an opening of the enclosure (E).A method for charging a self-propelled robotic lawnmower (1) comprises the steps of: the robotic lawnmower (1) navigating towards the charging station (2), sensing an attaining of a predetermined charging position by means of a charging position presence sensor (7) and a sensed feature (8), initiating a charging procedure once said charging position is attained, and said presence sensor (7) detecting said sensed feature (8) and interrupting the charging procedure if the presence sensor (7) no longer detects the sensed feature (8).

A water guiding part (132) for a watering device (100), wherein the watering device (100) comprises an inlet (122) configured to guide a liquid into the watering device (100), and an outlet (134) configured to guide the liquid out of the watering device (100). Further, the water guiding part (132) is configured to form at least part of a connection between the inlet (122) and the outlet (134). Further, the water guiding part (132) comprises a first section (140) and a second section (142), wherein the first section (140) and the second section (142) are formed from the same material. The water guiding part (132) is characterized in that the second section (142) is configured to provide stability to the water guiding part (132), and the first section (140) is configured to change its shape to compensate frost occurring in the water guiding part (132).

A liquid guiding portion (114) of a liquid application device (100), wherein the liquid guiding portion (114) comprises an inlet (116) configured to allow inflow of the liquid into the liquid guiding portion (114), and an outlet (118) configured to allow outflow of the liquid from the liquid guiding portion (114). The liquid guiding portion (114) is characterized in that the liquid guiding portion (114) is formed from a first component (120) and a second component (122), wherein the first component (120) comprises a rigid structure which is configured to provide structural rigidity to the liquid guiding portion (114), and wherein the second component (122) comprises a frost compensating material, and is configured to change its volume due to a temperature change. Further, the first component (120) is integrally formed with the second component (122).

A method for use in a robotic lawnmower system comprising a robotic lawnmower (100) arranged to operate in an outdoor operational area (205), the robotic lawnmower comprising a satellite navigation sensor and being arranged to operate based on a GCS source. The method comprises the robotic lawnmower receiving error correction data for satellite navigation from a GCS source through the communication interface (115) and determine (410) a current position based on the received error correction data and the satellite navigation sensor (175), wherein the method further comprises navigating (420) based on based on the satellite navigation sensor (175) or based on the satellite navigation sensor (175) in combination with received error correction data from a first GCS source (245-1), determining (430) that operating conditions have changed, and in response thereto navigating (440) based on based on the satellite navigation sensor (175) in combination with received error correction data from a second GCS source (245-2).

A cutting tool (100) includes a housing (102) defining a front surface (104) and a rear surface (106), with a motor disposed within the housing (102). The cutting tool (100) further includes a cutting implement (110) extending from the housing (102) away from the front surface (104) with the cutting implement's dimensions defining a cutting plane (112). Further, a handle assembly (114) is coupled to the housing (102) towards the rear surface (106), wherein the coupling defines a fixed swivel point (P) that allows the handle assembly (114) to swivel about the rear surface (106) of the housing (102) along a swivel axis (120) that runs through it and that is orthogonal to a swivel plane (108) that comprises the swivel point (P). The cutting tool (100) is characterized in that the swivel plane (108) is backwardly inclined to the cutting plane (112) by an inclination angle (125) that is in a range of 30 to 60 degrees, preferably 35 to 45 degrees, and more preferably 40 degrees.

A skid plate for a robotic lawnmower, comprises an approximately circular plate with a central opening (13), for a hub (6b), and means of attachment (14, 15). The skid plate (2b) is attachable to the robotic lawnmower. An edge portion (7) of the circular plate is bent to extend transversally to a main plane (8) of the circular plate. An outer peripheral edge (11) thereof extends in a single plane.A robotic lawn mower comprises an electric motor connected to a rotatable cutting head (1b). The cutting head is connected to a cutting disk (3b) with at least one knife (4b) at its periphery. A skid plate (2b) as above is arranged below the cutting disk (3b).

An irrigation system (100) comprises a sprinkler (200) for watering of at least one pre-defined area (A1, A2, A3), and at least one mounting structure (300) configured such that the sprinkler (200) is removably couplable in a defined orientation to the at least one mounting structure (300). The irrigation system (100) is characterized that the sprinkler (200) comprises a position determining device (230) configured to determine a cardinal orientation of the sprinkler (200). The irrigation system (100) further comprises a control unit (224) configured to control the watering of the at least one pre-defined area (A) dependent on the determined cardinal orientation of the sprinkler (200) when the sprinkler (200) is removably coupled to one of the at least one mounting structure (300).

A cutting assembly (1) for a robotic lawnmower (2) is disclosed. The cutting assembly (1) comprises a cutting arrangement (4), a mounting unit (8), and a mechanism (5) configured to support the cutting arrangement (4) relative to the mounting unit (8) such that the cutting arrangement (4) is movable in directions (d1, d2) towards and away from a ground plane (PL1). The cutting assembly (1) further comprises a first member (m1) attached to the cutting arrangement (4) and a second member (m2) arranged on the mounting unit (8), wherein the first member (m1) is configured to abut against the second member (m2) when the cutting arrangement (4) is at a set cutting height position relative to the mounting unit (8) to prevent further movement of the cutting arrangement (4) in the direction (d1) towards the ground plane (PL1). The cutting arrangement (4) comprises one or more elastic members (7, 7') arranged to bias the cutting arrangement (4) towards the set cutting height position. The present disclosure further relates to a robotic lawnmower (2) comprising a cutting assembly (1).

The present disclosure relates to a method for operating a self-propelled robotic lawnmower 1. The lawnmower is configured to operate in a pseudo random pattern 35 in a work area 31, and comprises driving means 3, 61, processing means 63, and a camera 11. The method includes detecting 51 a rough grass patch condition, defined as an estimated ratio of uncut- to cut grass in the work area falling below a threshold. Then, a rough grass patch 37 is identified 53 using the camera, and the lawnmower steers towards and processes 55 the identified rough patch 37.

A valve arrangement (400) configured to generate a reverse flow of air to clean a pre-filter (200) for a heavy-duty dust extractor (100), the arrangement comprising:a main valve closure body (410) arranged to move between a first position (420) and a second position (430),where, in the first position (420), the main valve closure body (410) is arranged to seal a passage (440) between an ambient pressure (P2) side and a low pressure (P3) side of the valve arrangement (400),where, in the second position (430), the main valve closure body (410) is arranged to seal a passage (450) between the low pressure (P3) side of the valve arrangement (400) and a suction conduit (140, P4),the valve arrangement (400) further comprising:a control body (460), connected to the main valve closure body (410), such that a position of the main valve closure body (410) is determined by a position of the control body (460),a control chamber (461), partially defined by the control body (460), whereby a volume of the control chamber (461) is variable in relation to the position of the control body (460), anda control chamber valve (462) having an open state and a closed state for regulating a pressure (P1) in the control chamber,wherein the state of the control chamber valve (462) is determined by a trigger device (470, 480).

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