Lawn mower

Abstract

The utility model provides a mowing machine. The mowing machine comprises a frame; the controller is used for controlling the mowing machine to move and work on the ground; the functional device is arranged on the periphery of the frame and provides input information for the controller, and the controller controls the mower based on the input information; the protection device extends from the frame to the outer side of the functional device, a protection part for protecting the functional device in at least one of the length direction, the width direction and the height direction of the mower is formed on the protection device, and the protection part is arranged on the outer side of the functional device in the horizontal direction. Functional devices of the mower are prevented from being damaged due to collision with obstacles or when the mower topples over, and the stability and the safety of the mower are improved.

Description

[0001] This application claims priority to Chinese patent application filed on July 6, 2023 and with application number CN202310825935.2, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the technical field of garden tools, and in particular to a lawn mower. Background Art

[0003] A lawn mower is a mechanical tool used to trim grass, vegetation, etc. With the development of technology, intelligent lawn mowers are increasingly widely used. Intelligent lawn mowers are usually equipped with a variety of control devices and sensor devices to help control the movement and operation of the lawn mower, and to help the lawn mower sense surrounding information or interact with the user during the movement and operation process.

[0004] In the prior art, the control device and the sensor device are installed on the housing of the lawn mower. When the lawn mower is in use, the control device and the sensor device may collide with obstacles; or when the lawn mower is tilted for maintenance, the control device and the sensor device may collide with the ground; the control device and the sensor device are easily damaged by the collision, the maintenance cost is high, and the stability and safety of the lawn mower are affected. Summary of the invention

[0005] In view of this, an object of the present disclosure is to provide a lawn mower, the control device and the sensor device of which are not easily damaged by collision.

[0006] In order to achieve one of the above disclosed purposes, the present disclosure provides a lawn mower, comprising:

[0007] Frame;

[0008] A controller, controlling the lawn mower to move and work on the ground;

[0009] a functional device, disposed around the frame, providing input information to the controller, and the controller controls the lawn mower based on the input information;

[0010] The protective device extends from the frame to the outside of the functional device, and is formed with a protective portion for protecting the functional device in at least one direction of the length direction, width direction and height direction of the lawn mower. The protective portion is arranged on the outside of the functional device in the horizontal direction.

[0011] As a further improvement of the embodiment of the present disclosure, the functional device includes a sensor device that provides the controller with information about the surrounding environment of the lawn mower, and the protective part is entirely outside the sensing range of the sensor device.

[0012] As a further improvement of the embodiment of the present disclosure, the sensor device includes a front sensor device arranged at the front part of the frame; the protective device includes a front protective device, at least part of the front protective device is arranged in front of the front sensor device in the horizontal direction.

[0013] As a further improvement of the embodiment of the present disclosure, the front guard device includes a front bracket and a front guard part, the front bracket is connected to the lawn mower frame, and the front guard part extends along the outer peripheral surface of the front sensor device to provide protection for the surface of the front sensor device facing the outside of the lawn mower.

[0014] As a further improvement of the embodiment of the present disclosure, the functional device includes a rear sensor device arranged at the rear of the frame; the protective device includes a rear protective device, at least part of the rear protective device is arranged behind the rear sensor device in the horizontal direction.

[0015] As a further improvement of the embodiment of the present disclosure, the rear guard device includes a rear guard portion and a rear bracket connected to the rear portion of the frame, the rear guard portion includes a first rear guard portion extending from the rear bracket along the height direction of the lawn mower toward a direction away from the ground, and a second rear guard portion connected to the first rear guard portion and extending along the width direction of the lawn mower; the interval between the rear guard portion and the rear sensor device is not less than 10 mm.

[0016] As a further improvement of the disclosed embodiment, the lawn mower also includes a front cover arranged at the front part of the frame; the functional device includes a front detection assembly arranged on the front cover; the protective device includes a front anti-collision strip arranged to protrude forward from the front cover; the main part of the front anti-collision strip extends along the width direction of the lawn mower, and its extension length is greater than or equal to the length of the front cover extending along the width direction of the lawn mower.

[0017] As a further improvement of the embodiment of the present disclosure, the front anti-collision strip includes a flexible shell and a built-in sensor, wherein the sensor is arranged at the front side of the inner wall of the flexible shell closest to the flexible shell, and when the flexible shell is hit by an external force, the sensor is triggered to send a collision signal; a flexible support member is arranged on the rear side of the sensor, and the middle and rear part of the flexible shell is designed as a cavity. The flexible shell is compressed toward the middle and rear by an external force, and the sensor moves toward the cavity along with the flexible shell.

[0018] As a further improvement of the embodiment of the present disclosure, the functional device includes a human-machine operating mechanism arranged on either the left or right side of the frame, and the human-machine operating mechanism includes a joystick and an operating platform; the protective device includes a side protective device, the main body of the side protective device extends from the frame to the outside of the human-machine operating mechanism, and is spaced apart from the human-machine operating mechanism in the width direction of the lawn mower.

[0019] As a further improvement of the disclosed embodiment, the highest point of the side guard is flush with or higher than the highest point of the joystick; the outer edge of the side guard body is coplanar with the outermost side of the frame or exceeds the outermost side of the lawn mower frame; the side guard and the human-machine operating mechanism are spaced apart by no less than 10 mm along the width direction of the lawn mower.

[0020] In order to achieve one of the above-mentioned disclosed purposes, the present disclosure provides a lawn mower, comprising: a frame; a cutting deck connected to the bottom of the frame; a human-machine operating mechanism, arranged on either side of the frame, including a joystick and an operating platform; a side guard, a main body of which extends from the frame to the outside of the human-machine operating mechanism, with a gap from the human-machine operating mechanism in the horizontal direction, and a highest point of which is flush with or higher than the highest point of the joystick; when the side guard contacts the ground, it provides support for the lawn mower.

[0021] As a further improvement of the disclosed embodiment, the outer edge of the main body of the side guard is coplanar with the outermost side of the lawn mower frame or exceeds the outermost side of the lawn mower frame.

[0022] As a further improvement of the embodiment of the present disclosure, the side guard device and the human-machine operating mechanism are spaced apart by no less than 10 mm along the width direction of the lawn mower.

[0023] As a further improvement of the embodiment of the present disclosure, the lawn mower further includes a driving wheel and a cutting deck. When the lawn mower tilts, the side protection device, the driving wheel and the cutting deck together support the lawn mower.

[0024] As a further improvement of the embodiment of the present disclosure, the side guard connecting portion is provided on the vehicle frame, and the side guard is detachably mounted on the side guard connecting portion.

[0025] As a further improvement of the embodiment of the present disclosure, the main body extends from the frame toward the outside of the human-machine operating mechanism, and the side protection device includes a first extension portion and a second extension portion, the first extension portion extends from the frame toward a direction away from the frame, and the second extension portion extends from the first extension portion toward a direction away from the ground.

[0026] As a further improvement of the embodiment of the present disclosure, the first extension portion extends obliquely in a direction away from the frame and at the same time away from the ground, wherein an angle between the oblique extension direction and the horizontal plane is not less than 30 degrees.

[0027] As a further improvement of the embodiment of the present disclosure, the side guard device includes a third extension portion, which extends from the second extension portion in a direction parallel to the movement of the lawn mower, and the extension length is greater than two-thirds of the length of the operating platform.

[0028] As a further improvement of the embodiment of the present disclosure, the operating console includes an operating device for a passenger to operate to control the movement of the lawn mower, and a display device for presenting information of the lawn mower.

[0029] In order to achieve one of the above-mentioned disclosed purposes, the present disclosure provides a lawn mower, comprising: a frame; a controller, controlling the lawn mower to move and work on the ground; a functional device, arranged around the frame, providing input information to the controller, and the controller controls the lawn mower based on the input information; a protective device, extending from the frame to the outside of the functional device, forming a protective part for protecting the functional device in at least one direction of the length direction, width direction and height direction of the lawn mower, and the protective part is arranged on the outside of the functional device in the horizontal direction.

[0030] As a further improvement of the embodiment of the present disclosure, the functional device includes a sensor device that provides the controller with information about the surrounding environment of the lawn mower, and the protective part is entirely outside the sensing range of the sensor device.

[0031] As a further improvement of the embodiment of the present disclosure, the sensor device includes a front sensor device arranged at the front part of the frame; the protective device includes a front protective device, at least part of the front protective device is arranged in front of the front sensor device in the horizontal direction.

[0032] As a further improvement of the embodiment of the present disclosure, the front guard device includes a front bracket and a front guard part, the front bracket is connected to the lawn mower frame, and the front guard part extends along the outer peripheral surface of the front sensor device to provide protection for the surface of the front sensor device facing the outside of the lawn mower.

[0033] As a further improvement of the embodiment of the present disclosure, the front protective part is made of plastic material.

[0034] As a further improvement of the embodiment of the present disclosure, the functional device includes a rear sensor device arranged at the rear of the frame; the protective device includes a rear protective device, at least part of the rear protective device is arranged behind the rear sensor device in the horizontal direction.

[0035] As a further improvement of the embodiment of the present disclosure, the rear guard device includes a rear guard portion and a rear bracket connected to the rear portion of the frame, the rear guard portion includes a first rear guard portion extending from the rear bracket along the height direction of the lawn mower toward a direction away from the ground, and a second rear guard portion connected to the first rear guard portion and extending along the width direction of the lawn mower.

[0036] As a further improvement of the embodiment of the present disclosure, the interval between the rear protective portion and the rear sensor device is not less than 10 mm.

[0037] As a further improvement of the embodiment of the present disclosure, the outer dimensions of the rear guard portion are between 300-350 mm in the height direction of the lawn mower and between 280-330 mm in the width direction of the lawn mower.

[0038] As a further improvement of the disclosed embodiment, the lawn mower also includes a front cover arranged at the front part of the frame; the functional device includes a front detection assembly arranged on the front cover; the protective device includes a front anti-collision strip arranged to protrude forward from the front cover; the main part of the front anti-collision strip extends along the width direction of the lawn mower, and its extension length is greater than or equal to the length of the front cover extending along the width direction of the lawn mower, and when there is an obstacle in front of the lawn mower, the front anti-collision strip is the first to contact the obstacle.

[0039] As a further improvement of the embodiment of the present disclosure, the front anti-collision strip includes a flexible shell and a built-in sensor, and the sensor is arranged closest to the front side of the inner wall of the flexible shell. When the flexible shell is hit by external force, the sensor is triggered to send a collision signal.

[0040] As a further improvement of the embodiment of the present disclosure, the middle and rear part of the flexible shell is designed as a cavity, the flexible shell is compressed toward the middle and rear part by an external force, and the sensor moves toward the cavity along with the flexible shell.

[0041] As a further improvement of the embodiment of the present disclosure, a flexible support is provided on the rear side of the sensor.

[0042] As a further improvement of the embodiment of the present disclosure, the flexible shell is made of rubber material, and the sensor includes silicone material.

[0043] As a further improvement of the embodiment of the present disclosure, the front detection assembly includes an ultrasonic detection unit and a lighting unit, the ultrasonic detection unit and the lighting unit are arranged on the front cover, and the front anti-collision strip is arranged below the front cover.

[0044] As a further improvement of the embodiment of the present disclosure, the front part of the frame is provided with a first front cross beam and a second front cross beam in sequence from near to far distance from the ground, the ultrasonic detection unit is horizontally arranged between the first front cross beam and the second front cross beam, and the front anti-collision strip is provided in front of the first front cross beam.

[0045] As a further improvement of the embodiment of the present disclosure, the functional device includes a human-machine operating mechanism arranged on either the left or right side of the frame; the protective device includes a side protection assembly, the side protection assembly body extends from the frame to the outside of the human-machine operating mechanism, and is spaced apart from the human-machine operating mechanism in the width direction of the lawn mower.

[0046] As a further improvement of the embodiment of the present disclosure, the side protection assembly and the human-machine operating mechanism are spaced apart by no less than 10 mm along the width direction of the lawn mower.

[0047] The lawn mower provided by the present disclosure is provided with a protective device outside the functional components of the lawn mower, thereby preventing the functional components of the lawn mower from being damaged due to collision with obstacles or when the lawn mower falls over, thereby improving the stability and safety of the lawn mower. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic structural diagram of a lawn mower provided in one embodiment of the present disclosure;

[0049] Figure 2 for Figure 1 Schematic diagram of the structure on the opposite side of the mower;

[0050] Figure 3 for Figure 1 Front view of the lawn mower;

[0051] Figure 4 for Figure 1 rear view of the mower;

[0052] Figure 5 for Figure 2 A top view of a portion of the structure of a lawn mower;

[0053] Figure 6 for Figure 5 An enlarged cross-sectional view of part of the structure of the middle mower along line AA.

[0054] Figure 7 for Figure 5 Cross-sectional view of the front bumper strip in FIG. DETAILED DESCRIPTION

[0055] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings.

[0056] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the embodiments of the present disclosure do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0057] A lawn mower, also known as a lawn machine, is used to move on the ground and perform vegetation cutting and maintenance work. The lawn mower can be powered by a variety of methods, and for example, the lawn mower uses a battery to provide power for movement and work.

[0058] Combination Figures 1 to 5 As shown, the present disclosure takes a riding smart lawn mower as an example for specific introduction. In other embodiments, the lawn mower may also be a smart lawn mower, a push lawn mower, etc. The lawn mower 100 includes a frame 10; a seat for an operator to sit on is provided on the frame 10 (not shown in the figure); a moving module 101, a cutting deck 11, a control module and a protective device are provided on the frame 10.

[0059] The frame 10 provides structural support for the lawn mower 100. Exemplarily, the frame 10 extends continuously and is formed by one or more parts connected together. Alternatively, the frame 10 can also be formed by a combination of separate parts connected by dynamic connectors.

[0060] The mobile module 101 is used to carry the frame 10, and generally includes one or more driving wheels 13 and a driving motor for driving the driving wheels 13. The mobile module 101 drives the lawn mower 100 to move forward along the front F shown in the figure in the working area, or to move in other directions for work.

[0061] The cutting deck 11 is connected to the bottom of the frame 10 and generally includes one or more cutting units (not shown in the figure) for trimming or cutting vegetation in the working area. The cutting unit generally includes a cutter disc, a blade and other parts.

[0062] The control module includes at least one of a controller and a functional device. The controller is used to control the lawn mower. The functional device provides input information to the controller. The controller controls the lawn mower to move and work in a pre-set manner based on the information input by the functional device. The functional device usually includes a control device and a sensor device. The control device is used for the user to control the lawn mower and the interaction between the lawn mower and the user. The sensor device is used to identify and sense the environmental information of the lawn mower 100, such as the map or geographic location information of the lawn mower 100, the obstacle information around the lawn mower 100, etc. The functional device is composed of a variety of components, which will be described in detail below when it comes to specific applications.

[0063] The protective device is used to protect the lawn mower 100. When the lawn mower 100 topples over actively or passively, or collides with an obstacle, the components at the corresponding positions where the protective device is arranged are protected. This will be described in detail below when it comes to specific applications.

[0064] In one embodiment of the present disclosure, a lawn mower 100 includes a frame 10; a cutting deck 11 connected to the bottom of the frame 10; functional devices, in this embodiment, the functional devices include a human-machine operating mechanism 20. The human-machine operating mechanism 20 is arranged on either side of the frame 10, including a joystick 21 and an operating platform 23; the operating platform 23 includes an operating device for a passenger to operate to control the movement of the lawn mower 100, and a display device that presents interactive information of the lawn mower 100; the operating device can be a control button and other components; a protective device, in this embodiment, the protective device includes: a side protective device 30, the main body of the side protective device 30 extends from the frame 10 to the outside of the human-machine operating mechanism 20, in the width direction of the lawn mower, the side protective device 30 and the human-machine operating mechanism 20 are arranged at intervals, that is, in the horizontal direction, the side protective device 30 is at a certain interval from the human-machine operating mechanism 20, and its highest point is flush with or higher than the highest point of the joystick 21; when the side protective device 30 contacts the ground, it forms support for the lawn mower 100.

[0065] The side protection device 30 in this embodiment can protect the human-machine operating mechanism 20 when the lawn mower 100 rolls over. For example, the rollover is mainly caused by active rollover when the lawn mower 100 parts are replaced, or passive rollover caused by external force collision.

[0066] In the implementation of the present disclosure, the side guard 30 is coplanar with the outermost side of the frame 10 of the lawn mower 100 or exceeds the outermost side of the frame 10 of the lawn mower. Taking the forward direction F of the lawn mower 100 as a reference, the outer side specifically refers to the left and right sides of the lawn mower 100. With this structural arrangement, when the lawn mower 100 falls in the direction where the side guard 20 is installed, the first parts of the lawn mower 100 to touch the ground are at least the side guard 30, so that the parts of the lawn mower 100 are protected.

[0067] In the implementation mode of the present disclosure, when the lawn mower 100 tilts, the side guard 30 and at least one of the driving wheel 13 and the cutting deck 11 jointly support the lawn mower 100. Specifically, the outermost sides of the driving wheel 13 and the cutting deck 11 can be arranged in the same plane, or can be located on different vertical planes perpendicular to the ground. When the outermost sides of the driving wheel 13 and the cutting deck 11 are in the same plane, the side guard 30 is in the same plane with the two, so that when the lawn mower 100 overturns, the three together support the lawn mower 100. When the outermost sides of the driving wheel 13 and the cutting deck 11 are not in the same vertical plane, the outermost side of the side guard 30 is in the same plane with the one of the two that is closer to the outermost side, so as to ensure that when the lawn mower 100 overturns, the side guard 30 protects the lawn mower 100.

[0068] In the implementable manner of the present disclosure, "the side guard 30 is spaced a certain distance from the human-machine operating mechanism in the horizontal direction", and the certain distance specifically refers to the side guard 30 and the human-machine operating mechanism 20 being spaced a certain distance apart in the horizontal direction, and the spacing of the distance can be specifically set as needed; in the preferred embodiment of the present disclosure, the spacing between the two is not less than 10 mm, so that when the lawn mower 100 rolls over and the side guard 30 lands first, it is prevented from being deformed toward the inside of the lawn mower 100 due to excessive force, thereby preventing the human-machine operating mechanism 20 from being damaged.

[0069] In the implementation mode of the present disclosure, a side guard connection portion 31 is provided on the lawn mower frame 10, and the side guard 30 is detachably mounted on the side guard connection portion 31. Through the detachable installation mode, the side guard 30 is easy to replace; the lawn mower 100 is protected at the lowest cost. The detachable connection mode can be achieved by fixing with bolts and nuts, snap-fitting, etc., and the side guard 30 and the side guard connection portion 31 can be made of the same or different materials; no further description is given here.

[0070] In a preferred embodiment of the present disclosure, the side guard 30 includes a first extension portion 33 and a second extension portion 35. The first extension portion 33 extends from the frame 10 in a direction away from the frame 10, and the second extension portion 35 extends from the first extension portion 33 in a direction away from the ground. With the ground on which the lawn mower 100 is located as a reference, the extension direction of the first extension portion 33 can be horizontal to the ground, or can be extended at an angle to the ground, so as to achieve support and protection for the lawn mower in the width direction of the lawn mower. The extension direction of the second extension portion 35 can be a direction perpendicular to the ground, or can be a direction at an angle to the direction perpendicular to the ground, so as to achieve support and protection for the lawn mower in the height direction of the lawn mower.

[0071] In a preferred embodiment of the present disclosure, the first extension portion 33 extends obliquely in a direction away from the frame 10 and away from the ground, wherein the angle between the oblique extension direction and the horizontal plane is not less than 30 degrees. This arrangement can prevent the side guard 30 from interfering with other sensors disposed on the frame 10, save the manufacturing cost of the side guard 30, and provide a good supporting effect.

[0072] In a preferred embodiment here, the extension direction of the second extension portion 35 is perpendicular to the ground, so that when the robot rolls over, the outermost side of the entire second extension portion 35 touches the ground, thereby achieving better support and protection.

[0073] It should be noted that in the implementation of the present disclosure, the first extension portion 33 and the second extension portion 35 are arranged in cooperation, and the combination can generally be set as one group, or can be set as multiple groups as needed. In the preferred embodiment of the present disclosure, the first extension portion 33 and the second extension portion 35 are arranged in cooperation as two groups, and the two groups are arranged at intervals. Multiple supports are formed on the side of the lawn mower 100 to achieve a better protection effect.

[0074] The preferred side protection device disclosed in the present invention includes a third extension portion 37, which extends from the second extension portion 35 in a direction parallel to the movement of the lawn mower 100, and the extension length is greater than two-thirds of the length of the operating table 23, so as to achieve protection in the length direction of the lawn mower. It should be noted here that the third extension portion 37 can extend from the second extension portion 35 in one direction, or can extend from the second extension portion 35 in two opposite directions; when the first extension portion 33 and the second extension portion 35 are set to 2 groups or more, the third extension portion 37 can be set as a whole as one section, or can be set to multiple sections corresponding to at least 2 groups of second extension portions 35, and the superimposed length of the multiple sections of the third extension portion 37 is greater than two-thirds of the length of the operating table 23.

[0075] In the specific embodiment of the present disclosure, two groups of first extension portions 33 are symmetrically arranged. Correspondingly, the second extension portions 35 include two groups arranged corresponding to the two groups of first extension portions 33 . The third extension portion 37 is arranged to connect the ends of the two second extension portions 35 that are not connected to the first extension portion 33 .

[0076] The lawn mower 100 provided in this embodiment can protect the lawn mower 100 when it rolls over by disposing a side protection device 30 corresponding to the outer side of the human-machine operating mechanism 20, thereby avoiding damage to the human-machine operating mechanism 20 and improving the structural stability and safety of the lawn mower 100.

[0077] In another embodiment provided by the present disclosure, the specific structures of the control module and the protective device are different. The lawn mower 100 includes: a frame 10; a controller (not shown in the figure), which controls the lawn mower to move and work on the ground; a functional device, which is arranged around the frame 10 and provides input information to the controller, and the controller controls the lawn mower 100 based on the input information; a protective device, which extends from the frame to the outside of the functional device, and is formed with a protective part that protects the functional device in at least one direction of the length direction, width direction and height direction of the lawn mower, and the protective part is arranged outside the functional device in the horizontal direction.

[0078] In a specific embodiment, the functional device includes a sensor device, which provides the controller with information about the surrounding environment of the lawn mower, and the protective part is entirely outside the sensing range of the sensor device to avoid affecting the sensing of the surrounding environment by the sensor device.

[0079] Specifically, the sensor device includes at least one front sensor device 40 arranged at the front part of the frame 10; the protective device includes: a front protective device 50, extending from the frame 10 toward the front sensor device 40, at least part of the front protective device 50 is arranged in front of the front sensor device 40 in the horizontal direction, and the lowest point of the front protective device 50 is outside the detection range of the front sensor device 40; in this way, the front protective device 50 is prevented from blocking the detection of the front sensor device 40; the setting of the front protective device 50 in this embodiment can protect the lawn mower when the lawn mower collides forward or tilts forward and overturns; it should be noted that the front protective device 50 mainly protects the front sensor device 40.

[0080] In a preferred embodiment of the present disclosure, "the front guard 50 is arranged in front of the front sensor device 40 in the horizontal direction", that is, in the horizontal direction, the front guard 50 is spaced apart from the front sensor device 40, and the spacing of the spacing can be specifically set as needed; thereby, when the lawn mower collides forward or falls forward and the front guard 50 collides or touches the ground first, it is avoided that the front guard 50 is deformed toward the middle of the lawn mower due to excessive force, thereby preventing the front sensor device 40 from being damaged.

[0081] In a specific embodiment of the present disclosure, the front protection device 50 includes a front bracket 51 and a front protection part 53; the front bracket 51 is connected to the lawn mower frame 10, and extends from the frame 10 in a direction away from the ground. With the ground on which the lawn mower 100 is located as a reference, the extension direction of the front bracket 51 can be an angle with the ground; it can also be extended in a horizontal direction with the ground first, and then in a direction perpendicular to the ground, so as to achieve support and protection for the front sensor device 40 in the length direction and height direction of the lawn mower. The front protection part 53 at least partially covers the outer edge of the front end of the front sensor device 40, so as to achieve support and protection for the front sensor device 40 in the width direction of the lawn mower. It should be noted that the covering is a spatial covering. When the front of the robot 100 collides, or tilts forward and flips to the ground, the front guard device 50 is hit or touches the ground before the front sensor device 40. Because the two are in a "covering" relationship, the front guard device 50 protects the front sensor device 40 to ensure that the front guard device 50 protects the lawn mower when the front of the lawn mower collides, or tilts forward and flips to the ground.

[0082] Preferably, the front guard 53 is made of plastic material, so that the sensing effect of the front sensor device 40 will not be affected by the metal shielding. The front bracket 51 and the front guard 53 can be manufactured in one piece, or they can be detachably connected; accordingly, the material of the front bracket 51 and the material of the front guard 53 can be the same or different; in the preferred embodiment of the present disclosure, the front bracket 51 and the front guard 53 are detachably connected. When the lawn mower 100 is moving, the front part is more likely to be hit; the front guard 53 is made of plastic material, which saves replacement costs, and the front guard 53 made of plastic material has a certain elastic deformation space, which is more conducive to protecting the front sensor device 40.

[0083] The lawn mower of this embodiment is provided with a front protection device 50 corresponding to the front sensor device 40, so that the lawn mower can be protected when the lawn mower collides forward or tips over forward, thereby improving the structural stability and safety of the lawn mower.

[0084] In another embodiment provided by the present disclosure, the specific structures of the sensor device and the protective device are different. The lawn mower 100 includes: a frame 10; a sensor device, including at least one rear sensor device 60 arranged at the rear of the frame 10; a protective device, the protective device of this embodiment includes: a rear protective device 70, the rear protective device 70 extends from the frame 10 in a direction away from the ground, and the main body of the rear protective device 70 is U-shaped, and the U-shaped arrangement makes the rear protective device 70 not appear in the detection range of the rear sensor device 60. In this way, the rear protective device 70 blocks and avoids the detection effect of the rear sensor device 60. The setting of the rear protective device 70 in this embodiment can protect the lawn mower 100 when it collides backward or tips over backward; it should be noted that the rear protective device 70 mainly protects the rear sensor device 60.

[0085] The functions of the rear sensor device 60 and the front sensor device 40 disclosed in the present invention may be the same or different, and the components may be the same or different, which will not be described in detail here.

[0086] In the specific embodiment of the present disclosure, the rear guard 70 further includes a rear bracket 73 connected to the rear portion of the frame 10, and the rear guard body 71 is connected to the rear bracket 73, so that when the rear guard 70 contacts the ground, it supports the lawn mower 100. The rear guard 70 and the rear sensor 60 are arranged at intervals from each other; the interval arrangement makes it possible for the rear guard 70 to be hit or landed before the rear sensor 60 when the lawn mower 100 collides or flips backwards, so that the rear guard 70 protects the rear sensor 60.

[0087] The rear bracket 73 extends from the frame 10 in a direction away from the frame 10 to provide support and protection along the length direction of the lawn mower; the rear bracket 73 and the rear guard body 71 can be manufactured as one piece, or can be detachably connected; the materials of the two can be the same or different. In a preferred embodiment of the present disclosure, the rear bracket 73 is detachably connected to the rear guard body 71, which makes it easy to disassemble and replace the rear guard body 71.

[0088] In the specific embodiment of the present disclosure, the rear guard device body 71 extends from the rear bracket 73 in a direction away from the ground to protect the rear sensor device 60 in the height direction of the lawn mower. The U-shaped arrangement of the rear guard device body 71 prevents the rear guard device 70 from appearing in the detection range of the rear sensor device 60. Specifically, the U-shaped opening faces the ground, the U-shaped rear guard device body 71 is spaced a certain distance from the rear sensor device 60, the U-shaped crossbeam is higher in the vertical direction than the highest point of the detection range of the rear sensor device 60, and the two sides of the U-shape are located at a position that does not block the detection range of the rear sensor device 60. This arrangement prevents the rear guard device 70 from blocking the detection effect of the rear sensor device 60 on the rear obstacles, or prevents the rear sensor device 60 from mistakenly treating the rear guard device 70 as an obstacle. In addition, the crossbeam portion of the rear guard device body 71 protects the rear sensor device 60 in the width direction of the lawn mower.

[0089] In a preferred embodiment of the present disclosure, "a certain interval" specifically refers to that the rear guard body 71 and the rear sensor device 60 are spaced apart in the horizontal direction, and the spacing of the interval can be specifically set as needed; in a specific embodiment of the present disclosure, the interval between the rear guard body 71 and the rear sensor device 60 is not less than 10 mm, so that when the lawn mower collides backward or tilts backward and the rear guard body 71 collides or touches the ground first, it is avoided that the rear guard body 71 is deformed toward the middle of the lawn mower 100 due to excessive force, thereby preventing damage to the rear sensor device 60.

[0090] In the preferred embodiment of the present disclosure, the outer dimensions of the rear guard body 71 are between 300-350 mm in the height direction perpendicular to the ground, and between 280-330 mm in the width direction parallel to the ground. That is, the height of the two sides of the U-shape is between 300-350 mm, and the size of the U-shaped crossbeam is between 280-330 mm. This preferred setting method is combined with "the U-shaped arrangement so that the rear guard 70 will not appear in the detection range of the rear sensor 60", and while achieving a good protection effect, it also avoids the rear guard 70 blocking the detection of the rear sensor 60 to the greatest extent.

[0091] The lawn mower of this embodiment is provided with a rear protection device 70 corresponding to the rear sensor device 60 , so that the lawn mower 100 can be protected when the lawn mower 100 collides backward or overturns backward, thereby improving the structural stability and safety of the lawn mower.

[0092] Please also see Figure 6 In another embodiment provided by the present disclosure, a lawn mower 100 includes: a frame 10, a front cover 15 is provided at the front of the frame; a front detection assembly 80 is provided on the front cover 15; a front bumper strip 90, the front bumper strip 90 is provided protruding from the front cover 15 in the vertical direction, the main body portion extends in the transverse direction, and its length is greater than or equal to the transverse length of the front cover 15. When there is an obstacle in front of the lawn mower, the front bumper strip 90 first contacts the obstacle. The provision of the front bumper strip 90 in this embodiment can protect the lawn mower 100 when the lawn mower 100 collides forward; the front bumper strip 90 senses obstacles, and when it contacts the obstacles, it immediately feeds back to the lawn mower 100 for emergency obstacle avoidance, so as to protect the components at the front of the lawn mower, especially the front detection assembly 80.

[0093] Exemplarily, the front detection assembly 80 of the present disclosure may include an ultrasonic detection unit 81 and a lighting unit 82, and the ultrasonic detection unit 81 and the lighting unit 82 are arranged on the front cover 15, and the front protection assembly 80 is arranged below the front cover 15; the front protection assembly 80 is arranged at a relatively low position to facilitate the advance identification of obstacles of various heights in front of the lawn mower 100.

[0094] In a preferred embodiment of the present disclosure, the front part of the vehicle frame 10 is provided with a first front cross beam 17 and a second front cross beam 19 in order from near to far from the ground, the ultrasonic detection unit 81 is horizontally arranged between the first front cross beam 17 and the second front cross beam 19, and the front anti-collision strip 90 is provided in front of the first front cross beam 17. In this way, when the front cover 15 encounters a collision, the rear part of the ultrasonic detection unit 81 has sufficient buffer space to avoid damage to the ultrasonic detection unit 81, so as to form a good protection for the ultrasonic detection unit 81.

[0095] In the specific implementation mode of this disclosure, please refer to Figure 6 and Figure 7 The front bumper strip 90 includes a flexible shell 91 and a sensor 93 disposed in the shell 91. The sensor 93 is disposed on the front side closest to the inner wall of the shell 91. When the flexible shell 91 is hit by a certain external force, the sensor 93 is triggered to send a collision signal. When the front bumper strip 90 encounters an obstacle, the flexible shell 91 is deformed by the force. The sensor 93 disposed on the front side of its inner wall determines that there is an obstacle in front of the lawn mower by detecting the displacement caused by vibration or deformation. The lawn mower receives the signal sent by the sensor 93 and avoids the obstacle or stops moving in a pre-set manner to avoid further damage to the front detection assembly 80. Exemplarily, the sensor 93 may include one or more common vibration sensors or displacement sensors, which are not listed here one by one.

[0096] In a preferred embodiment of the present disclosure, a cavity 95 is designed in the middle and rear of the flexible shell 91. The flexible shell 91 is compressed toward the middle and rear by an external force, and the sensor 93 moves with the shell toward the cavity 95. The arrangement of the cavity 95 ensures that when the front bumper strip 90 encounters an obstacle and deforms, the sensor 93 has a certain buffer space, so that the sensor 93 is not easily damaged by the collision.

[0097] In a preferred embodiment of the present disclosure, a flexible support member 97 is provided at the rear side of the sensor 93. The provision of the flexible support member 97 enables the flexible housing 91 to have a certain support strength, and will not be easily deformed when encountering a small obstacle that will not cause damage to the lawn mower, thereby avoiding false alarms of obstacles and avoiding frequent shutdowns of the lawn mower.

[0098] In a preferred embodiment of the present disclosure, the flexible housing is made of rubber material, and the sensor includes silicone material. Exemplarily, the main body material of the flexible housing 91 includes ethylene propylene diene monomer (EPDM), which has good oxidation resistance and high temperature resistance, and is suitable for application scenarios where the lawn mower works for a long time in an open air environment. The sensor 91 includes electronic components and silicone material. The silicone material has good elasticity and deformation resistance, so that the sensor 91 has a long service life.

[0099] In summary, the lawn mower provided by the present disclosure is provided with a protective device outside the control device and the sensor device of the lawn mower, thereby preventing the control device and the sensor device of the lawn mower from being damaged due to collision with obstacles or tipping over of the lawn mower, thereby improving the stability and safety of the lawn mower.

[0100] It should be noted that "some body" or "some part" can be a part of the corresponding "component", that is, "some body" or "some part" can be integrally formed with the "other parts of the component"; or it can be an independent component that can be separated from the "other parts of the component", that is, "some body" or "some part" can be independently manufactured and then combined with the "other parts of the component" into a whole. The expression of the above-mentioned "some body" or "some part" in this disclosure is only one of the implementation methods, for the convenience of reading, rather than limiting the scope of protection of this disclosure, as long as it contains the above-mentioned features and has the same function, it should be understood as an equivalent technical solution of this disclosure.

[0101] It should be noted that the above describes some embodiments of the present disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or sequential order shown to achieve the desired results.

[0102] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples; based on the concept of the present disclosure, the above embodiments or technical features in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of simplicity.

[0103] The embodiments of the present disclosure are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A lawn mower, characterized in that: include: Frame; A controller, controlling the lawn mower to move and work on the ground; a functional device, disposed around the frame, providing input information to the controller, and the controller controls the lawn mower based on the input information; The protective device extends from the frame to the outside of the functional device, and is formed with a protective portion for protecting the functional device in at least one direction of the length direction, width direction and height direction of the lawn mower. The protective portion is arranged on the outside of the functional device in the horizontal direction.

2. The lawn mower according to claim 1, characterized in that The functional device includes a sensor device for providing the controller with information about the surrounding environment of the lawn mower, and the entire protection portion is outside the sensing range of the sensor device.

3. The lawn mower according to claim 2, characterized in that The sensor device comprises a front sensor device arranged at the front part of the frame; the protective device comprises a front protective device, at least part of which is arranged in front of the front sensor device in the horizontal direction.

4. The lawn mower according to claim 3, characterized in that The front protection device comprises a front bracket and a front protection part, wherein the front bracket is connected to the lawn mower frame, and the front protection part extends along the outer peripheral surface of the front sensor component to provide protection for the surface of the front sensor component facing the outer side of the lawn mower.

5. The lawn mower according to claim 2, characterized in that: The functional device comprises a rear sensor device arranged at the rear of the frame; the protective device comprises a rear protective device, at least part of which is arranged behind the rear sensor device in the horizontal direction.

6. The lawn mower according to claim 5, characterized in that The rear guard device includes a rear guard portion and a rear bracket connected to the rear portion of the frame, the rear guard portion includes a first rear guard portion extending from the rear bracket along the height direction of the lawn mower toward a direction away from the ground, and a second rear guard portion connected to the first rear guard portion and extending along the width direction of the lawn mower; the interval between the rear guard portion and the rear sensor device is not less than 10 mm.

7. The lawn mower according to claim 2, characterized in that The lawn mower also includes a front cover arranged at the front part of the frame; the functional device includes a front detection assembly arranged on the front cover; the protective device includes a front anti-collision strip arranged to protrude forward from the front cover; the main part of the front anti-collision strip extends along the width direction of the lawn mower, and its extension length is greater than or equal to the length of the front cover extending along the width direction of the lawn mower.

8. The lawn mower according to claim 7, characterized in that The front anti-collision strip includes a flexible shell and a built-in sensor, wherein the sensor is arranged at the front side of the inner wall of the flexible shell closest to the flexible shell, and the sensor is triggered to send a collision signal when the flexible shell is hit by an external force; a flexible support member is arranged on the rear side of the sensor, and the middle and rear part of the flexible shell is designed as a cavity. The flexible shell is compressed toward the middle and rear by an external force, and the sensor moves toward the cavity along with the flexible shell.

9. The lawn mower according to claim 2, characterized in that: The functional device includes a human-machine operating mechanism arranged on either the left or right side of the frame, and the human-machine operating mechanism includes a joystick and an operating platform; the protective device includes a side protective device, the main body of the side protective device extends from the frame to the outside of the human-machine operating mechanism, and is spaced apart from the human-machine operating mechanism in the width direction of the lawn mower.

10. The lawn mower according to claim 9, characterized in that The highest point of the side guard is flush with or higher than the highest point of the joystick; the outer edge of the side guard body is coplanar with the outermost side of the frame or exceeds the outermost side of the lawn mower frame; the side guard and the human-machine operating mechanism are spaced at least 10 mm apart in the width direction of the lawn mower.

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