Lawn mower

Abstract

The utility model provides a mowing machine which is provided with a machine body, a moving assembly, a cutting assembly comprising a cutting element and a guiding piece, the guiding piece is arranged in front of the cutting element in the advancing direction of the machine body, the length of the guiding piece is not smaller than the width of the cutting element in the width direction of the machine body, and the guiding piece is provided with a guiding piece covering area. The cutting element has a cutting element coverage area; the projection of the coverage area of the guide part covers the projection of the coverage area of the cutting element in the direction perpendicular to the advancing direction of the machine body, the guide part is arranged in front of the cutting element, objects such as golf balls are guided out of the cutting track away from the cutting element, the objects such as golf balls can be effectively prevented from making contact with a high-speed rotating blade, loss is reduced, and the cutting efficiency is improved. Meanwhile, the grass inlet allowing the grass to pass through is formed in the guiding piece, the degree that the grass is bent by the guiding piece is reduced, the grass enters the cutting element to be cut after passing through the grass inlet, cutting missing is reduced, and the cutting efficiency and the cutting smoothness of the cutting assembly are improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of lawn treatment machinery, in particular to a lawn mower. BACKGROUND

[0002] With the development of China's economy, the greening process of cities is gradually accelerating, and large areas of lawns such as parks, football fields, and golf courses are increasing. Lawn mowers have become essential equipment for maintaining large areas of lawns.

[0003] When the lawn mower is working on the golf course, golf balls and other objects scattered on the golf course may enter the cutting assembly of the lawn mower and be cut by the high-speed rotating blades in the cutting assembly, causing damage and loss. At the same time, the golf balls contacting the blades will cause wear or breakage of the blades, affecting the cutting efficiency, cutting effect, and service life of the lawn mower. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present disclosure provides a lawn mower that can effectively prevent golf balls and other objects from contacting high-speed rotating blades, reduce loss, improve the cutting effect and service life of the lawn mower, and ensure the cutting efficiency of the cutting assembly.

[0005] To achieve the above purpose, the present disclosure provides a lawn mower, comprising:

[0006] a machine body;

[0007] a moving assembly arranged on the machine body to support and drive the machine body to move in a working area;

[0008] a cutting assembly comprising a cutting element arranged on the machine body, the cutting element rotating around its own axis under the action of a drive;

[0009] a guide arranged on the machine body, the guide being arranged in front of the cutting element along the direction of movement of the machine body, the length of the guide being not less than the width of the cutting element along the width direction of the machine body, the guide having a guide coverage area along the width direction of the machine body, and the cutting element having a cutting element coverage area, the projection of the guide coverage area covering the projection of the cutting element coverage area along a direction perpendicular to the direction of movement of the machine body;

[0010] The guide is provided with at least one grass inlet for grass to pass through.

[0011] As a further improvement of the present disclosure, the cutting element comprises a cutter head and at least one layer of blades arranged on the cutter head, the top of the grass inlet being at a height not lower than the lowest height of the blades.

[0012] As a further improvement of the present disclosure, the width of the grass inlet is greater than 3mm and less than 42mm; the height of the bottom of the guide from the ground is greater than 0 and less than 42mm.

[0013] As a further improvement of the present disclosure, the width of the grass inlet ranges from 10mm to 30mm; the height of the bottom of the guide from the ground ranges from 15mm to 25mm.

[0014] As a further improvement of the present disclosure, the guide is mounted on the machine body by a floating structure, so that when the guide is subjected to an external force from below, the guide moves upward at least in the height direction.

[0015] As a further improvement of the present disclosure, the mower further comprises a floating height adjustment mechanism, the guide and the cutting assembly are mounted on the floating height adjustment mechanism, the floating height adjustment mechanism is used to adjust the height of the guide and the cutting assembly from the ground, and when the guide or the cutting assembly is subjected to an external force from below, the guide and the cutting assembly move upward synchronously at least in the height direction.

[0016] As a further improvement of the present disclosure, in the direction of travel of the machine body, the position of the middle part of the guide is located in front of the positions of the two ends of the guide.

[0017] As a further improvement of the present disclosure, the mower comprises at least a first cutting assembly and a second cutting assembly, in the direction of travel of the machine body, the first cutting assembly is located in front of the second cutting assembly, the middle part of the guide comprises a first part located at least partially in front of the first cutting assembly, a second part located at least partially in front of the second cutting assembly, and a third part connecting the first part and the second part, the angle formed by the extension line of the third part relative to the direction of travel of the machine body is greater than the angle formed by the extension line of the second part relative to the direction of travel of the machine body.

[0018] As a further improvement of the present disclosure, the moving assembly comprises a first wheel body and a second wheel body arranged opposite to each other on both sides of the machine body, in the transverse direction of the machine body, the length of the guide is not less than the maximum distance between the first wheel body and the second wheel body, and in the width direction of the machine body, the first wheel body and the second wheel body have a wheel body coverage area, and in the direction perpendicular to the direction of travel of the machine body, the projection of the wheel body coverage area in the transverse direction of the machine body does not protrude out of the projection of the guide coverage area.

[0019] As a further improvement of the present disclosure, the guide comprises a first end portion arranged close to the first wheel body and a second end portion arranged close to the second wheel body, the distance between the first end portion and the first wheel body is less than 42mm; the distance between the second end portion and the second wheel body is less than 42mm.

[0020] The beneficial effects of the present disclosure are: by arranging the guide in front of the cutting element, the objects such as golf balls are guided away from the cutting area of the cutting element, which can effectively avoid the objects such as golf balls from contacting the high-speed rotating blade, reduce the loss, improve the cutting effect and service life of the mower, at the same time, the guide is provided with a grass inlet for the grass to pass through, which reduces the degree of bending of the grass by the guide, so that the grass enters the cutting element for cutting after passing through the grass inlet, reduces the missed cutting, and improves the cutting efficiency and flatness of the cutting assembly. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure schematic diagram of the mower shown in some embodiments of the present disclosure.

[0022] Figure 2 The structure schematic diagram of the bottom of the mower shown in some embodiments of the present disclosure. Figure 1 The structure schematic diagram of the bottom of the mower shown in some embodiments of the present disclosure.

[0023] Figure 3 The structure schematic diagram of the side of the mower shown in some embodiments of the present disclosure. Figure 1 The structure schematic diagram of the side of the mower shown in some embodiments of the present disclosure.

[0024] Figure 4 The structure schematic diagram of the front of the mower shown in some embodiments of the present disclosure. Figure 1 The structure schematic diagram of the front of the mower shown in some embodiments of the present disclosure.

[0025] Figure 5 The structure schematic diagram of the guide in the mower shown in some embodiments of the present disclosure. Figure 1 The structure schematic diagram of the guide in the mower shown in some embodiments of the present disclosure.

[0026] Wherein, the mower-100; the body-1;

[0027] The moving assembly-2; the first wheel body-21; the second wheel body-22; the first front wheel-23; the second front wheel-24;

[0028] The cutting assembly-3; the first cutting assembly-301; the second cutting assembly-302; the cutting element-31; the cutter head-311; the blade-312;

[0029] The guide-4; the grass inlet-41; the first part-42; the second part-43; the third part-44; the first end portion-45; the second end portion-46. DETAILED DESCRIPTION

[0030] In order to make the above objectives, characteristics and advantages of the present disclosure more obvious and easy to understand, the specific embodiments of the present disclosure are described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present disclosure. However, the present disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present disclosure, so the present disclosure is not limited by the specific embodiments disclosed below.

[0031] In the present disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0032] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by those skilled in the art to which the present disclosure belongs. The terms used in the specification of the present disclosure herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] In the prior art, in order to reduce the damage of objects such as golf balls to the high-speed rotating blade, a ball pushing accessory is installed on the bottom of the mower to push the golf balls to the two sides of the mower. The distance between the ball pushing accessory and the ground is small to ensure the ball pushing efficiency of the ball pushing accessory. However, when the ball pushing accessory passes over the grass, the grass will be bent by the ball pushing accessory. When the cutting element and the ball pushing accessory are relatively close, the grass has not completely straightened up under the action of its own elasticity, and the cutting element has moved to the area where the grass is located to cut the grass. However, the grass that has not been straightened up may not be cut by the cutting element, resulting in poor cutting efficiency and poor cutting flatness.

[0035] Therefore, please refer to Figures 1 to 4An embodiment of the present disclosure provides a mower 100, which can be a hand-pushed mower, a smart mower, a riding mower, a standing mower, or a mower with multiple working modes, such as a mower with an automatic working mode and a manual mode operated by a user, and the like. The type of the mower 100 is not specifically limited herein, and the mower 100 can only be capable of realizing mowing work. Further, the mower 100 can be suitable for mowing work on a golf course or the like.

[0036] The mower 100 includes a machine body 1, a moving assembly 2 arranged on the machine body 1, a cutting assembly 3 arranged on the machine body 1, and a guide 4 arranged on the machine body 1.

[0037] The moving assembly 2 supports and drives the machine body 1 to move in a working area according to a received driving instruction. The moving assembly 2 includes a first wheel body 21 and a second wheel body 22 arranged at a rear end of the machine body 1, and a first front wheel 23 and a second front wheel 24 arranged at a front end of the machine body 1. The first wheel body 21 and the second wheel body 22 are oppositely arranged at two sides of the machine body 1, and the first wheel body 21 and the second wheel body 22 are driving wheels driven to rotate by a motor. The first front wheel 23 and the second front wheel 24 are steering wheels. Two groups of driving wheels serve as rear wheels, and two steering wheels serve as front wheels, the steering wheels are used to realize steering of the machine body 1, and the driving wheels are used to drive the machine body 1 to move. In other embodiments, two groups of driving wheels can be arranged at the front end of the machine body as front wheels. Alternatively, the mower can include three groups of driving wheels, one group of driving wheels is arranged at the front end of the machine body as front wheels, and the other two groups of driving wheels are arranged at the rear end of the machine body as rear wheels, and the movement of the three groups of driving wheels is used to realize the movement of the machine body. Alternatively, the mower can include four groups of driving wheels, two groups of driving wheels are arranged at the front end of the machine body as front wheels, and the other two groups of driving wheels are arranged at the rear end of the machine body as rear wheels.

[0038] The cutting assembly 3 includes a cutting element 31 arranged on the machine body 1. Alternatively, the cutting element 31 can be arranged at the bottom of the machine body 1. The cutting assembly 3 further includes a driving element (not shown) arranged on the machine body 1 and connected with the cutting element 31. The cutting element 31 rotates around its own axis under the driving action of the driving element. The driving element can be a motor or the like power structure, which is a prior art and will not be described herein.

[0039] The number of cutting assemblies 3 is set as one, two, three, etc. In some embodiments, the mower 100 comprises at least a first cutting assembly 301 and a second cutting assembly 302, and the first cutting assembly 301 is located in front of the second cutting assembly 302 along the traveling direction of the machine body 1. The first cutting assembly 301 and the second cutting assembly 302 are distributed in a staggered manner at the bottom of the machine body 1, so as to avoid the large space caused by the linear arrangement of the cutting assemblies 301 and 302, and to improve the compactness of the mower 100. In order to avoid the situation of grass missing, the cutting areas of the first cutting assembly 301 and the second cutting assembly 302 are connected or at least partially overlapped. The cutting element 31 can be arranged between the front and rear wheels of the moving assembly 2. It can be understood that the cutting assembly 3 can be arranged not only between the front and rear wheels, but also on the front side, rear side or side of the machine body 1. The traveling direction of the machine body 1 is indicated by the arrow A in Figure 2 .

[0040] The cutting element 31 comprises a cutter head 311 and at least one layer of blades 312 arranged on the cutter head 311. The number of cutting planes of the cutting element 31 is not specifically limited herein, that is, the cutting element 31 can have a single layer of blades 312 or multiple layers of blades 312. When the number of cutting planes is at least two, the distance between the adjacent two cutting planes is not specifically limited herein. The adjacent two cutting planes can be the upper surface and the lower surface of the cutter head 311, or the cutter head 311 comprises at least two mounting bodies arranged in the axial direction of the cutter head 311, and each mounting body is provided with a cutting plane.

[0041] In some embodiments, the plurality of blades 312 are distributed in two different cutting planes, and at least two blades 312 are arranged in each cutting plane. The blades 312 are evenly distributed along the circumference of the cutter head 311 to ensure the balance of the cutting element 31 during operation. In each cutting plane, three blades 312 are evenly distributed along the circumference of the cutter head 311. The number of blades 312 in each cutting plane can be the same or different, and is not limited to three, but can be two, four, or more. However, in order to achieve balance and improve efficiency during cutting, the blades 312 must be evenly distributed along the circumference of the cutter head 311. The plurality of blades 312 in the two cutting planes are of the same specification, which facilitates the universality of the blades 312 and effectively reduces costs. In addition, the projections of the plurality of blades 312 in a plane perpendicular to the rotation axis of the cutter head 311 do not coincide, that is, the plurality of blades 312 are distributed along the cutter head 311 in a staggered and spaced manner. This arrangement allows the cutting element 31 to achieve sequential cutting of the grass during operation. The blade 312 is a long strip-shaped blade 312, which includes at least one straight cutting edge. In this embodiment, the blade 312 has two straight cutting edges. When one cutting edge is damaged after a period of operation, the other cutting edge can still be used, which reduces the frequency of replacing the blade 312 and saves costs.

[0042] During rotation of the cutting element 31, the end of the blade 312 away from the cutter head 311 forms a circular profile, which is the cutting area of the cutting element 31. During travel of the mower 100, the circular profile formed by the blade 312 forms a cutting trajectory of the cutting element 31, that is, a mowing area formed on the lawn during cutting by the mower 100. When the cutting assembly 3 is provided with only one group, the cutting area of the cutting element 31 is the cutting area of the group of cutting elements 31. When the cutting assembly 3 is provided with at least two groups, the cutting area of the cutting element 31 is the sum of the cutting areas of all cutting elements 31. For example, referring to Figure 2 , the width of the cutting area of the cutting element 31 is the width of the cutting area formed by the first cutting assembly 301 and the second cutting assembly 302.

[0043] The guide 4 is arranged on the machine body 1, and in the advancing direction of the machine body 1, the guide 4 is arranged in front of the cutting element 31, and in the width direction of the machine body 1, the length of the guide 4 is not less than the width of the cutting element 31, and in the width direction of the machine body 1, the guide 4 has a guide coverage area, and the cutting element 31 has a cutting element coverage area; in the direction perpendicular to the advancing direction of the machine body 1, the projection of the guide coverage area covers the projection of the cutting element coverage area. The guide 4 guides the object on the ground in contact with the guide 4 to move out of the cutting area of the cutting element 31. That is, when the lawn mower 100 advances, the cutting track formed by the cutting element 31 is located within the moving track of the guide 4. Wherein, the moving track of the guide 4 is the projection track of the guide 4 on the ground when the lawn mower 100 advances. Or, in the transverse direction of the machine body 1, the two ends of the guide 4 respectively protrude out of the two sides of the cutting element 31 or are flush with the two sides of the cutting element 31. It should be noted that, in the width direction of the machine body 1, the guide coverage area is an area capable of guiding the movement of a golf ball. For example, the guide 4 includes two independent parts, and a golf ball cannot pass through the gap between the two parts, so the guide coverage area includes the gap between the two parts. Wherein, the transverse direction of the machine body 1 is indicated by arrow B in Figure 2 .

[0044] Optionally, the guide 4 guides the object on the ground in contact with the guide 4 to move out of the cutting track of the cutting element 31, and when the lawn mower 100 moves in the working area and performs cutting work, when the lawn mower 100 moves forward, the golf ball is located in front of the cutting element 31, the guide 4 in front of the cutting element 31 preferentially contacts the golf ball, and the golf ball moves to the outside of the cutting track of the cutting element 31 under the action of the guide 4, when the cutting element 31 moves to the original position of the golf ball, the golf ball has been guided away, so the cutting element 31 smoothly passes through the position, effectively avoiding the contact between the golf ball and the cutting element 31, thereby avoiding the damage of the golf ball caused by being cut by the blade 312, avoiding the wear or breakage of the blade 312 caused by the contact between the golf ball and the blade 312, improving the cutting effect, cutting effect and service life of the lawn mower 100, reducing loss, and improving use safety.

[0045] In the advancing direction of the machine body 1, the middle part of the guide 4 is located in front of the two ends of the guide 4. When the golf ball contacts the guide 4, the machine body 1 continues to move forward, and because the middle part is located in front of the two ends, the golf ball will not only move forward under the driving action of the guide 4, but also move from the middle part to the two ends in the transverse direction, until it moves to the outside of the guide 4. In this embodiment, the size of the guide 4 is greater than the size of the cutting track of the cutting element 31 in the transverse direction of the machine body 1, so as to ensure that the golf ball moved from the two sides of the guide 4 is located outside the cutting track of the cutting element 31.

[0046] Optionally, the guide 4 can also be configured to prevent the object from contacting the cutting element 31. Instead of guiding the object to move out of the cutting track of the cutting element 31, the guide 4 keeps the object in contact with the guide 4 all the time. Since the guide 4 is located in front of the cutting element 31, the object is effectively prevented from contacting the cutting element 31. When the object is kept in contact with the guide 4, the object is located in front of the guide 4 and moves synchronously with the guide 4. The user can clean the object in front of the guide 4 after a period of time, which improves the efficiency of the guide 4 in preventing the object from contacting the cutting element 31. In this embodiment, the guide 4 can extend in the transverse direction of the machine body 1, or the middle part of the guide 4 is closer to the rear end of the machine body 1 than the two ends, which is not limited herein. The front end and the rear end of the machine body 1 are located in front of and behind the machine body 1 in the advancing direction of the machine body 1, respectively. In addition, the guide 4 can have both the function of guiding the object out of the cutting track of the cutting element 31 and the function of keeping the object in contact with the guide 4 all the time.

[0047] In some embodiments, the guide 4 is located below the machine body 1 in the height direction of the machine body 1, and the projection of the machine body 1 in the height direction at least partially covers the projection of the guide 4 in the height direction. The guide 4 is at least partially located below the machine body 1, which is a reasonable layout and does not increase the length or width of the lawn mower 100, thereby ensuring the passability of the lawn mower 100. Optionally, the guide 4 is located between the front end of the machine body 1 and the cutting element 31 in the advancing direction of the machine body 1, and the guide 4 is located below the machine body 1 and does not protrude out of the front end of the machine body 1. Optionally, the guide 4 is located between the front end of the machine body 1 and the front wheel in the advancing direction of the machine body 1, or the guide 4 is located between the front wheel and the cutting element 31. In other embodiments, the guide 4 can be located in front of the machine body 1.

[0048] The material of the guide 4 is not limited herein as long as it does not affect the return of the lawn mower 100 to the base station. Optionally, the material of the guide 4 is plastic or aluminum. When the lawn mower 100 returns to the base station for charging or other maintenance operations, a magnetic strip is provided near the base station to guide the lawn mower 100 to return. If the material of the guide 4 is iron, it will affect the return of the lawn mower 100.

[0049] In order to ensure that the guide 4 can effectively prevent the golf ball from contacting the cutting element 31, the distance between the guide 4 and the ground is small, so the grass will be pressed down by the guide 4. The blade 312 is a blade 312 without a flange. When the cutter head 311 rotates, there is no upward airflow. Therefore, the grass pressed down by the guide 4 needs to stand up by itself due to its elasticity, and then it can be cut.

[0050] Please refer to Figure 1 , Figure 4 andFigure 5 The guide 4 is provided with at least one grass inlet 41 for grass to pass through. When the mower 100 is running, the grass can pass through the grass inlet 41 to reduce the degree of being bent by the guide 4, so that the grass can restore to the height of contacting the cutting element 31 under the elastic action of itself before entering the cutting element 31, the grass can be fully cut by the cutting element 31, the cutting efficiency of the cutting assembly 3 is improved, and the cutting unevenness caused by the cutting of the grass in the bent state by the cutting element 31 is reduced. By providing the grass inlet 41 on the guide 4, not only the cutting efficiency is ensured, but also the height of the bottom of the guide 4 from the ground is small, and the guiding effect of the guide 4 on the golf ball is ensured.

[0051] The number of the grass inlets 41 can be multiple, and the multiple grass inlets 41 are arranged on the guide 4 at intervals. The shape of the grass inlet 41 is not specifically limited here, which can be trapezoidal, square, rectangular, arc-shaped or the like.

[0052] In some embodiments, the height of the top of the grass inlet 41 is not lower than the lowest height of the blade 312. When the guide 4 passes above the grass, the grass can pass through the grass inlet 41 without being excessively depressed, and the grass that is not excessively depressed can enter the effective cutting range of the blade 312, so that the cutting efficiency is ensured and the cutting omission is avoided.

[0053] The diameter of the golf ball is 42 mm, and the width of the grass inlet 41 needs to be smaller than the diameter of the golf ball, so that the golf ball cannot pass through the grass inlet 41 to enter the cutting element 31. The width of the grass inlet 41 is the size of the grass inlet 41 along the horizontal direction. Optionally, the width of the grass inlet 41 is greater than 3 mm and smaller than 42 mm. The width range ensures that the grass can pass through smoothly, and by limiting the maximum horizontal size of the grass inlet 41, the golf ball and other objects are blocked by the guide 4 due to the size exceeding the range of the grass inlet 41. The lower limit of the width of the grass inlet 41 is set to 3 mm, which can avoid that the grass inlet 41 is too small to achieve effective grass amount, affecting the cutting efficiency. The upper limit of the width of the grass inlet 41 is set to 42 mm, which can avoid that the grass inlet 41 is too large to cause the golf ball to enter the cutting area, and ensure the structural strength of the guide 4. By optimizing the width of the grass inlet 41, the guide 4 not only maintains the normal mowing function, but also guides the objects out of the cutting area. Optionally, the width of the grass inlet 41 ranges from 5 mm to 40 mm, which further improves the grass amount and the strength of the guide 4, and ensures the cutting efficiency of the mower and the guiding effect on the golf ball. Optionally, the width of the grass inlet 41 ranges from 10 mm to 30 mm. Optionally, the width of the grass inlet 41 ranges from 15 mm to 28 mm. The width of the grass inlet 41 can be any value within the limited range, which is not listed here.

[0054] The height of the grass inlet 41 can be set according to actual needs, for example, 20mm-30mm, such as 25mm, so as to further ensure that the grass can pass through smoothly while the golf ball and the like are blocked outside the cutting range of the cutting element 31. Alternatively, the height of the grass inlet 41 is less than the height of the guide 4, so that the guide 4 is an independent component, facilitating its installation and removal and the like. Alternatively, some grass inlets 41 can also penetrate the guide 4 along the height direction of the machine body 1, and the guide 4 is divided into two, three, four or the like independent parts.

[0055] The height of the bottom of the guide 4 from the ground is greater than 0 and less than 42mm. The height of the bottom of the guide 4 from the ground is the vertical distance between the lower edge of the guide 4 and the ground. This range ensures that the guide 4 effectively contacts the golf ball and the like on the ground to form a guiding effect.

[0056] Alternatively, the height of the bottom of the guide 4 from the ground is 5mm-40mm, which ensures that the guide 4 can effectively contact the golf ball and the like on the ground to form a guiding effect, and also avoids that the gap between the guide 4 and the ground is too small to affect the obstacle crossing ability and the running stability of the mower 100, and avoids the problem of reduced obstacle crossing ability or object missing of the guide 4 due to improper height setting.

[0057] When the distance between the bottom of the guide 4 and the ground is 5mm-40mm, when the mower 100 runs, the object contacting the guide 4 will be blocked by the guide 4 and move outward along the surface of the guide 4, so as to avoid the cutting area of the cutting element 31. At the same time, this height range allows the guide 4 to avoid excessive extrusion of the ground when the mower 100 encounters ground protrusions or obstacles, so that the mower 100 can pass through the obstacles smoothly. By limiting the lower limit of the distance between the bottom of the guide 4 and the ground to 5mm, the guide 4 can maintain sufficient ground clearance to ensure the obstacle crossing ability during running. By limiting the upper limit of the distance between the bottom of the guide 4 and the ground to 40mm, the gap between the guide 4 and the ground is controlled to effectively guide the golf ball and the like, avoiding the object from passing through from below the guide 4 into the cutting area.

[0058] Alternatively, the height of the bottom of the guide 4 from the ground is 15mm-25mm, which further ensures the obstacle crossing ability of the mower 100 and the guiding effect of the guide 4 on the golf ball.

[0059] In some embodiments, the guide 4 is mounted on the machine body 1 through a floating structure, so that when the guide 4 is subjected to an external force from below, the guide 4 moves upward at least in the height direction, further improving the obstacle crossing ability of the lawn mower 100, and avoiding damage to the ground by the guide 4. The guide of the traditional lawn mower is fixedly installed, and when encountering ground protrusions, the machine cannot float and has poor obstacle crossing ability. The present disclosure realizes dynamic obstacle avoidance of the guide 4 through the floating structure, eliminates the risk of rigid collision while maintaining the guiding function of golf balls and the like, and enables the lawn mower 100 to smoothly cross obstacles with large height differences.

[0060] Please refer to Figure 3 , the guide 4 is lower than the machine body 1, that is, it is exposed downward from the machine body 1, and the obstacle crossing ability of the lawn mower 100 mainly depends on the position of the guide 4. In order to prevent the guide 4 from being in a lower position and affecting the movement of the lawn mower 100 when encountering obstacles, the guide 4 moves upward relative to the machine body 1 at least in the height direction as the height of the obstacle increases, and when the height of the obstacle decreases, the guide 4 moves downward in the height direction under the action of its own gravity or elastic members, etc. After the guide 4 crosses the obstacle, the guide 4 is reset to the initial position to ensure the smoothness of the movement of the lawn mower 100 and improve the obstacle crossing ability of the lawn mower 100.

[0061] The guide 4 is mounted on the machine body 1 through a floating structure, effectively preventing deformation or damage of the guide 4 caused by collision with obstacles, and improving the obstacle crossing ability of the lawn mower 100 in complex terrain. The movable characteristics of the guide 4 enable the lawn mower 100 to automatically adapt to ground undulations during movement, avoid interruptions caused by local jamming, and at the same time maintain continuous operation of the cutting assembly 3 on the lawn.

[0062] The lawn mower 100 further comprises a floating height adjustment mechanism (not shown), and the cutting assembly 3 is mounted on the floating height adjustment mechanism. The floating height adjustment mechanism is used to adjust the height of the cutting assembly 3 from the ground, and when the cutting assembly 3 is subjected to an external force from below, the cutting assembly 3 moves upward at least in the height direction.

[0063] The lawn mower 100 is provided with a plurality of gears, and the gear refers to the height of the blade 312 of the cutting element 31 from the ground. This height represents how high the machine will cut the grass when running. Specifically, the gear indicates 20mm, 25mm, 30mm, and each gear corresponds to a cutting height. Alternatively, the gear indication can be represented by numbers such as 1, 2, 3, and each number corresponds to a cutting height. Of course, the gear indication is not limited to numbers, but can also be other characters, such as English letters, Roman letters, etc. The present disclosure is not specifically limited here.

[0064] In some embodiments, the cutting element 31 has a lowest cutting height range of 20mm-30mm, and when the mower 100 is in the lowest gear, the distance H1 between the blade 312 of the cutting element 31 and the ground is 20mm. When the mower 100 is in the highest gear, the distance H2 between the blade 312 of the cutting element 31 and the ground is 30mm.

[0065] The floating height adjustment mechanism includes a gear adjusting member for adjusting the gear to change the height of the cutting element 31 from the ground, and is configured to only limit the current lowest position of the cutting device. Specifically, the floating height adjustment mechanism can be configured to adjust the gear to determine the current height of the blade 312 of the cutting element 31 from the ground, without limiting the upward movement of the cutting element 31 when subjected to an external force from below.

[0066] Specifically, the floating height adjustment mechanism can be provided with a height adjustment structure and a gear adjusting member. The gear adjusting member can be in the form of a knob. By rotating the knob to different gears, the height adjustment structure is driven to change the height of the cutting element 31 from the ground. Specifically, the height adjustment structure can be a multi-link structure, a spring structure, or other forms of floating height adjustment, which are not specifically limited in the present disclosure.

[0067] For example, the multi-link structure can be a four-bar linkage structure, and the movement of the links in the four-bar linkage structure can drive the upward and downward movement of the driving element connected to the cutting element 31, thereby achieving the height adjustment of the driving element and the cutting element 31. The height adjustment structure can limit the current cutting height and the lowest point of the driving element from the working surface, i.e., determine the height of the blade 312 of the cutting element 31 from the ground.

[0068] The multi-link structure is a movable four-bar linkage structure, which deforms when the cutting element 31 is subjected to an external force from below, so that the cutting element 31 floats upward. When the external force is removed, the cutting element 31 returns to the original position under the action of gravity. The movable four-bar linkage structure can also be connected to a reset member. When the cutting element 31 moves upward relative to the machine body 1 at least in the height direction, the reset member exerts at least a downward force on the cutting element 31. Specifically, when the cutting element 31 is subjected to an external force from below, the cutting element 31 moves upward relative to the machine body 1, and the reset member stores energy. When the external force is removed, the cutting element 31 is reset under the action of the stored energy of the reset member and the gravity of the cutting element 31.

[0069] In the embodiment, the guide 4 is installed on the floating adjustment mechanism, and the guide 4 and the cutting assembly 3 are synchronously moved upward at least in the height direction when the guide 4 or the cutting assembly 3 is subjected to an external force from below. An additional floating structure is not required, the structure of the mower 100 is saved, the structural layout is facilitated, and the cost is reduced. The integrated height control of the guide 4 and the cutting assembly 3 is realized through the floating height adjustment mechanism, which simplifies the adjustment steps and ensures the synchronism of the obstacle avoidance action. Meanwhile, the guide 4 is arranged close to the cutting assembly 3, and the cutting efficiency of the cutting assembly 3 can be ensured due to the grass inlet 41 arranged on the guide 4.

[0070] The guide 4 and the cutting assembly 3 are both installed on the floating adjustment mechanism, and the height of the guide 4 and the height of the cutting assembly 3 are relatively fixed. The bottom of the guide 4 is relatively close to the lowest height of the blade 312 of the cutting element 31, and the distance between the bottom of the guide 4 and the lowest height of the blade 312 is 4mm-10mm. Alternatively, the distance between the bottom of the guide 4 and the lowest height of the blade 312 is 5mm.

[0071] As described above, the distance between the bottom of the guide 4 and the ground is 5mm-40mm. Even if the guide 4 is in the gear of 40mm away from the ground and can float up and down, the grass will support the golf ball to a certain height away from the ground when the golf ball is on the lawn, and the guide 4 can have a good guiding effect on the golf ball.

[0072] Please refer to Figure 2 and Figure 5 , the guide 4 is arranged between the front wheel and the cutting assembly 3. The first cutting assembly 301 is arranged close to the front end of the machine body 1 relative to the second cutting assembly 302, the distance between the first cutting assembly 301 and the first front wheel 23 is small, the golf ball cannot move to the outside of the machine body 1 between the first front wheel 23 and the guide 4 under the action of the guide 4, the golf ball is stored between the first front wheel 23 and the guide 4, and moves synchronously with the guide 4 under the action of the guide 4. The distance between the second cutting assembly 302 and the second front wheel 24 is large, and the golf ball can move to the outside of the machine body 1 between the second front wheel 24 and the guide 4 under the action of the guide 4.

[0073] The middle part of the guide 4 includes a first part 42 located at least partially in front of the first cutting assembly 301, a second part 43 located at least partially in front of the second cutting assembly 302, and a third part 44 connecting the first part 42 and the second part 43. In order to reduce the frequency of user cleaning, the part of the guide 4 located at the front end is arranged close to the first cutting assembly 301, because the golf ball located between the first front wheel 23 and the guide 4 needs to be cleaned by the user. That is, the second part 43 and the third part 44 are inclined in the same direction relative to the traveling direction of the machine body 1, and the first part 42 and the third part 44 are inclined in different directions relative to the traveling direction of the machine body 1. The second part 43 and the third part 44 guide the golf ball to move in the same direction, the first part 42 and the third part 44 guide the golf ball to move in opposite directions, and in the transverse direction of the machine body 1, the length of the first part 42 is less than the sum of the lengths of the second part 43 and the third part 44, so that the probability of the golf ball contacting the second part 43 and the third part 44 is greater than the probability of the golf ball contacting the first part 42, and the golf ball is more likely to move from between the second front wheel 24 and the guide 4 to the outside of the machine body 1, thereby reducing the storage of the golf ball between the first front wheel 23 and the guide 4, and reducing the frequency of user cleaning.

[0074] The angle formed by the extension line of the third part 44 relative to the traveling direction of the machine body 1 is greater than the angle formed by the extension line of the second part 43 relative to the traveling direction of the machine body 1. Thus, the distance between the second front wheel 24 and the second part 43 is increased, the smoothness of the golf ball passing between the second front wheel 24 and the guide 4 is improved, and the probability of the golf ball being stuck between the second front wheel 24 and the guide 4 is reduced.

[0075] When the lawn mower 100 performs cutting work on a golf course, the lawn mower 100 is prone to rolling over the golf ball, causing the lawn mower 100 to travel unevenly and leading to uneven cutting of the lawn. Therefore, in some embodiments, in the transverse direction of the machine body 1, the length of the guide 4 is not less than the maximum distance between the first wheel body 21 and the second wheel body 22, and in the width direction of the machine body 1, the first wheel body 21 and the second wheel body 22 have a wheel body coverage area, and in the direction perpendicular to the traveling direction of the machine body 1, the projection of the wheel body coverage area in the transverse direction of the machine body 1 does not protrude out of the projection of the guide coverage area. Or, in the direction perpendicular to the traveling direction of the machine body 1, the projection of the first wheel body 21 and the second wheel body 22 in the transverse direction of the machine body 1 does not protrude out of the projection of the guide 4. Or, the moving track formed by the first wheel body 21 and the second wheel body 22 is located within the moving track of the guide 4. The guide 4 guides the golf ball in contact with the guide 4 to move to the outside of the moving track of the rear wheel, thereby moving the golf ball away from the first wheel body 21 and the second wheel body 22, effectively reducing the uneven travel of the lawn mower 100 caused by the first wheel body 21 or the second wheel body 22 rolling over the golf ball, and improving the cutting flatness of the lawn.

[0076] The guide 4 comprises a first end 45 arranged close to the first wheel body 21 and a second end 46 arranged close to the second wheel body 22. Optionally, the first end 45 of the guide 4 protrudes out of the first wheel body 21 and the second end 46 of the guide 4 protrudes out of the second wheel body 22, so that the golf ball in contact with the guide 4 moves out of the moving track formed by the first wheel body 21 and the second wheel body 22. Optionally, both ends of the guide 4 protrude out of the body 1, so that the moving track of the guide 4 covers the moving track formed by the first wheel body 21 and the second wheel body 22.

[0077] The moving track formed by the first wheel body 21 and the second wheel body 22 is located in the moving track of the guide 4, so that the guide 4 can also prevent the golf ball from entering the cutting element 31 from the side when the mower 100 turns, and further ensure that the golf ball can enter the cutting area of the cutting element 31.

[0078] In some embodiments, the distance between the first end 45 and the first wheel body 21 is less than 42 mm, and the distance between the second end 46 and the second wheel body 22 is less than 42 mm. By limiting the distance between the guide 4 and the rear wheel to be less than the diameter of the golf ball, the mower 100 can effectively avoid the golf ball entering the gap between the guide 4 and the rear wheel when the mower 100 moves forward, turns or moves on a slope, which can cause the mower 100 to tip over, and the golf ball can also effectively avoid entering the cutting area of the cutting element 31 from the gap between the guide 4 and the rear wheel, which can cause damage to the golf ball and the mower 100.

[0079] In some embodiments, the mower 100 can also be an intelligent mower 100, which can autonomously move and cut in the lawn area. The intelligent mower 100 not only comprises the above structure, but also comprises a controller (not shown) and an energy module (not shown). The energy module is used to provide energy for various operations of the intelligent mower 100, which can include a rechargeable battery and a charging connection structure, wherein the charging connection structure is usually a charging electrode sheet which can be used with a charging electrode sheet arranged in a docking station to charge the intelligent mower 100. The controller is signal connected with the above-mentioned moving assembly 2, cutting assembly 3 and the like, and is used to control the intelligent mower 100 to automatically move and work. The functions executed by the controller include controlling the cutting assembly 3 to start or stop working, controlling the moving assembly 2 to move, judging the power of the energy module and timely controlling the intelligent mower 100 to return to the docking station for automatic charging, executing corresponding programs in combination with the data of the environmental sensor, and the like.

[0080] In order to realize self-movement of the mower 100 for cutting work without user intervention and improve user experience, the mower 100 further comprises a positioning device arranged on the machine body 1 to obtain a position coordinate of the mower 100, and the mower 100 realizes automatic navigation according to the position coordinate to move along a preset path. The positioning device comprises a positioner for receiving satellite signals and / or base station signals and outputting positioning data. The controller is arranged in the machine body 1 and is configured to obtain position data of the mower 100 according to the positioning data output by the positioning device (positioner).

[0081] The positioning device can be offset or centrally mounted on the machine body 1. Alternatively, the positioning device can be detachably connected to the machine body 1. On the other hand, the positioning device can obtain coordinate information of the position where it is located by absolute positioning or relative positioning. Correspondingly, the positioning device can comprise a visual sensor (such as a monocular camera, a multi-view camera, a depth camera, etc.), an image sensor, a satellite positioning sensor, etc. Correspondingly, the positioning device can obtain coordinate information of the position where it is located by using one or more of the following positioning technologies: GPS technology, visual simultaneous localization and mapping (VSLAM) technology, real-time kinematic (RTK) positioning technology, etc.

[0082] The intelligent mower 100 comprises an imaging sensor to enable the intelligent mower 100 to move while avoiding obstacles. The imaging sensor is connected to the machine body 1 and is configured to collect an image in the forward direction of the machine body 1, which is at least partially an image of the working surface in the forward direction. The collected image is within the field of view of the imaging sensor. The imaging sensor can be a camera or a laser radar commonly used in the industry.

[0083] In summary, by arranging the guide in front of the cutting element, the golf ball and other objects are guided away from the cutting area of the cutting element, which can effectively avoid the golf ball and other objects from contacting the high-speed rotating blade, reduce loss, improve the cutting effect and service life of the mower, and at the same time, the guide is provided with a grass inlet for grass to pass through, which reduces the degree of bending of the grass by the guide, so that the grass passes through the grass inlet and enters the cutting element for cutting, reduces missed cutting, and improves the cutting efficiency and flatness of the cutting assembly.

[0084] The technical features of the above embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present disclosure.

[0085] The above embodiments only express several implementation manners of the present disclosure, which are described in a more specific and detailed manner, but cannot be understood as a limitation on the scope of the disclosed patent. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present disclosure, which all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent should be subject to the appended claims.

Claims

1. A lawnmower characterised in that, The lawn mower comprises: a machine body (1); a moving assembly (2) arranged on the machine body (1) and used for supporting and driving the machine body (1) to move in a working area; a cutting assembly (3) comprising a cutting element (31) arranged on the machine body (1) and used for rotating about an axis of the cutting element (31) under the driving action; a guide member (4) arranged on the machine body (1) and located in front of the cutting element (31) along a moving direction of the machine body (1), wherein the guide member (4) has a length not less than a width of the cutting element (31) along a width direction of the machine body (1), and the guide member (4) has a guide member coverage area along the width direction of the machine body (1), and the cutting element (31) has a cutting element coverage area; a projection of the guide member coverage area covers a projection of the cutting element coverage area along a direction perpendicular to the moving direction of the machine body (1); and at least one grass inlet (41) for allowing grass to pass through is arranged on the guide member (4).

2. The lawnmower as claimed in claim 1, characterized in that The cutting element (31) comprises a cutter head (311) and at least one layer of blades (312) arranged on the cutter head (311), and a top of the grass inlet (41) is located at a height not lower than a lowest height of the blades (312).

3. The lawnmower as claimed in claim 1, characterized in that The width of the grass inlet (41) is greater than 3 mm and less than 42 mm, and a height of a bottom of the guide member (4) from the ground is greater than 0 and less than 42 mm.

4. The lawnmower as claimed in claim 1, characterized in that The width of the grass inlet (41) ranges from 10 mm to 30 mm, and the height of the bottom of the guide member (4) from the ground ranges from 15 mm to 25 mm.

5. The lawnmower as claimed in any one of claims 1 to 4, characterized in that The guide member (4) is mounted on the machine body (1) through a floating structure, so that when the guide member (4) is subjected to an external force from below, the guide member (4) moves upward at least in the height direction.

6. The lawnmower as claimed in claim 5, characterized in that The lawn mower further comprises a floating height adjustment mechanism, the guide member (4) and the cutting assembly (3) are mounted on the floating height adjustment mechanism, the floating height adjustment mechanism is used for adjusting a height of the guide member (4) and the cutting assembly (3) from the ground, and when the guide member (4) or the cutting assembly (3) is subjected to an external force from below, the guide member (4) and the cutting assembly (3) move upward synchronously at least in the height direction.

7. The lawnmower as claimed in any one of claims 1 to 4, characterized in that In the moving direction of the machine body (1), a middle of the guide member (4) is located in front of both ends of the guide member (4).

8. The lawnmower of claim 7, wherein, The mower comprises at least a first cutting assembly (301) and a second cutting assembly (302), the first cutting assembly (301) is located in front of the second cutting assembly (302) along the direction of travel of the machine body (1), the middle part of the guide member (4) comprises a first part (42) located at least partially in front of the first cutting assembly (301), a second part (43) located at least partially in front of the second cutting assembly (302), and a third part (44) connecting the first part (42) and the second part (43), the angle formed by the extension line of the third part (44) relative to the direction of travel of the machine body (1) is greater than the angle formed by the extension line of the second part (43) relative to the direction of travel of the machine body (1).

9. The lawnmower as claimed in any one of claims 1 to 4, characterized in that The moving assembly (2) comprises a first wheel body (21) and a second wheel body (22) arranged oppositely on both sides of the machine body (1), along the transverse direction of the machine body (1), the length of the guide member (4) is not less than the maximum distance between the first wheel body (21) and the second wheel body (22), and along the width direction of the machine body (1), the first wheel body (21) and the second wheel body (22) have a wheel body coverage area, and along the direction perpendicular to the direction of travel of the machine body (1), the projection of the wheel body coverage area in the transverse direction of the machine body (1) does not protrude out of the projection of the guide member coverage area.

10. The lawnmower as claimed in claim 9, characterized in that The guide member (4) comprises a first end part (45) arranged close to the first wheel body (21) and a second end part (46) arranged close to the second wheel body (22), the distance between the first end part (45) and the first wheel body (21) is less than 42mm; the distance between the second end part (46) and the second wheel body (22) is less than 42mm.

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