A lawnmower and a ride-on lawnmower

Abstract

The utility model discloses a mower and riding mower, and the mower includes frame, running part, mower part and power supply part, and the mower part includes mower motor and sets up the cutter of mower motor output end, and the mower motor drives cutter to rotate with the rotation axis as the pivot, and defines a minimum cylinder of wrapping cutter as the cutter's swept volume, and the swept volume is obliquely arranged to make the front side of the lower end surface of the swept volume lower than the rear side in the advancing direction of the riding mower. The cutter directly contacts the grass in the process of forming the front side part of the rotation axis in the swept volume in the rotating process to perform the mowing action, and the cutter is above the grass plane of the grassland in the process of forming the rear side part of the rotation axis in the swept volume in the rotating process, which can avoid the contact and friction between the cutter and the grass, avoid the repeated work, reduce the load, prolong the endurance time of the whole machine and prevent the cutter from being seriously worn.

Description

Technical Field

[0001] This utility model belongs to the technical field of garden operation vehicles, specifically relating to a lawnmower and a ride-on lawnmower. Background Technology

[0002] The mowing components of a ride-on lawnmower significantly impact mowing efficiency, quality, and overall machine lifespan. These components include the rotating blade. During blade rotation, a small cylinder enclosing the blade is defined as the sweeping body. Currently, the bottom surface of this sweeping body is parallel to the grass. However, as the ride-on lawnmower moves forward, the blade rotates rapidly. While the blade is rotating at the front of the mower, it performs mowing motions. Because the bottom surface of the sweeping body is parallel to the grass, and the blade is inevitably subjected to vibrations from the drive source and ground undulations, it is prone to contact with the grass again and perform mowing motions during its rotation at the rear of the mower. This leads to repeated cutting by the mowing motor, increasing the load, reducing the machine's runtime, and causing severe blade wear, thus shortening the blade's lifespan. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the prior art, the present invention provides a lawnmower and a ride-on lawnmower that can reduce repetitive mowing and improve work efficiency.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A lawnmower, comprising:

[0006] The frame extends in the direction the lawnmower is moving;

[0007] A driving component, the driving component including a drive motor and drive wheels driven by the drive motor;

[0008] A mowing component is located below the vehicle frame and is used to perform mowing operations;

[0009] A power supply component, mounted on the vehicle frame and including a battery pack, is used to supply power to at least the drive motor;

[0010] The mowing component includes a mowing motor and a cutter blade disposed at the output end of the mowing motor. The mowing motor drives the cutter blade to rotate about a rotation axis. A minimum cylinder that encloses the cutter blade is defined as the sweeping body of the cutter blade. The sweeping body is inclined so that any point on the front side of the lower end of the sweeping body is lower than any point on the rear side in the forward direction of the mower.

[0011] Furthermore, the height difference between the foremost and last endpoints of the lower end face of the sweeping body is 3mm-10mm.

[0012] Furthermore, when the mowing component is at different heights, the maximum height difference between any point on the front side and any point on the rear side of the lower end face of the sweeping body is different.

[0013] Furthermore, when the mowing component is at its lowest height, the maximum height difference between any point on the front side and any point on the rear side of the lower end face of the sweeping body is 3mm-5mm.

[0014] Furthermore, it also includes a hinge component, which includes a front hinge assembly and a rear hinge assembly. The front hinge assembly is hinged to the frame at a front upper hinge point and to the mowing component at a front lower hinge point. The rear hinge assembly is hinged to the frame at a rear upper hinge point and to the mowing component at a rear lower hinge point. The distance between the front upper hinge point and the front lower hinge point is greater than the distance between the rear upper hinge point and the rear lower hinge point.

[0015] Furthermore, the front articulation assembly includes a front tie rod, the free end of which is hinged to the frame via a locking pin. The free end of the front tie rod passes through a through hole in the locking pin and is screwed with a locking nut at each end of the locking pin.

[0016] Furthermore, at least one of the locking nuts is a flange nut.

[0017] Furthermore, it also includes an adjustment assembly hinged to the rear articulation assembly, which, by controlling the adjustment assembly and cooperating with the front and rear articulation assemblies, adjusts the mounting height of the mowing component relative to the frame.

[0018] Furthermore, the adjustment component and the rear hinge component are hinged at the adjustment hinge point. The distance between the adjustment hinge point and the rear upper hinge point is called the first distance, and the distance between the rear upper hinge point and the rear lower hinge point is called the second distance. The ratio between the first distance and the second distance is 0.65-0.85.

[0019] Furthermore, the mowing component also includes a housing for mounting the mowing motor, the housing including a top wall and a peripheral wall extending downward from the edge of the top wall, the plane enclosed by the bottom edge of the peripheral wall being parallel to the lower end face of the sweeping body.

[0020] Furthermore, the bottom end of the shell peripheral wall extends laterally outward to form the shell bottom wall, and the outer edge of the shell bottom wall bends upward to form a flange.

[0021] A rideable lawnmower, including

[0022] The frame extends along the forward direction of the riding lawnmower;

[0023] A seat, mounted on the vehicle frame, is used to support the user;

[0024] A driving component, the driving component including a drive motor and drive wheels driven by the drive motor;

[0025] A mowing component is located below the vehicle frame and is used to perform mowing operations;

[0026] A power supply component, mounted on the vehicle frame and including a battery pack, is used to supply power to at least the drive motor;

[0027] The mowing component includes a mowing motor and a cutter blade disposed at the output end of the mowing motor. The mowing motor drives the cutter blade to rotate around a rotation axis. In the forward and backward direction of the riding mower, the height of any point on the cutter blade when it is located in front of the rotation axis is lower than the height when it is located behind the rotation axis.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] The lawnmower of this invention includes a mowing motor and a blade located at the output end of the motor. The motor drives the blade to rotate around a rotation axis. A minimum cylindrical body enclosing the blade is defined as the sweeping body. The sweeping body is tilted such that, in the forward direction of the lawnmower, any point on the front side of the lower end of the sweeping body is lower than any point on the rear side, i.e., the sweeping body is lower in the front and higher in the rear. This arrangement is because the blade rotates rapidly during the forward movement of the lawnmower, forming a cylindrical sweeping body. When the sweeping body is in the forward position along the rotation axis, it directly contacts the grass to perform the mowing action. However, when the sweeping body is in the rear position along the rotation axis, it is positioned above the cut grass surface, avoiding contact and friction with the grass, thus preventing repeated work and repeated mowing. This reduces the load, increases the overall machine's operating time, and prevents severe blade wear, extending the blade's lifespan. Attached Figure Description

[0030] Figure 1 A schematic diagram of the overall three-dimensional structure of a ride-on lawnmower;

[0031] Figure 2 A three-dimensional structural diagram of one direction in which the lawnmower motor and the cutter blade are connected;

[0032] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure from another direction;

[0033] Figure 4A schematic diagram of a lawnmower motor driving a cutter blade to rotate around a rotation axis and form a sweeping body;

[0034] Figure 5 A schematic diagram showing the sweeping body tilted at 5° to conceal the cutter.

[0035] Figure 6 A schematic diagram showing the sweeper tilted at 5° to display the cutter and hide the sweeper.

[0036] Figure 7 This is a partial three-dimensional structural diagram of the riding lawnmower of this utility model;

[0037] Figure 8 for Figure 7 The diagram shows the main structure after the locking nut is tightened;

[0038] Figure 9 An exploded view of the connection between the front linkage and the locking pin;

[0039] Figure 10 A schematic diagram of the force analysis for a four-bar linkage structure with a quadrilateral cross-section formed by the front articulation assembly, the mowing component, the rear articulation assembly, and the frame.

[0040] Figure 11 A schematic diagram illustrating the application of an upward force to the rear hinge assembly at the adjustment hinge point to increase the mounting height of the mowing component relative to the frame;

[0041] Figure 12 This is a schematic diagram showing the increased mounting height of the lawnmower unit relative to the frame.

[0042] The following are the labeling details in the diagram: 1. Front upper hinge point, 2. Front lower hinge point, 3. Rear upper hinge point, 4. Rear lower hinge point, 5. Housing, 501. Top wall of housing, 502. Peripheral wall of housing, 503. Flanged edge, 6. Mowing motor, 7. Front hinge assembly, 701. Front tie rod, 702. Locking pin, 703. Locking nut, 704. Anti-detachment pin, 8. Adjusting hinge point, 9. Frame, 10. Rear hinge assembly, 11. Seat, 12. Drive wheel, 13. Cutter, 14. Sweeper. Detailed Implementation

[0043] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0044] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] like Figure 1 , Figure 7 and Figure 8 As shown, a lawnmower includes: a frame 9, a traveling component, a mowing component, a power supply component, and an articulated component. The lawnmower can be a stand-up lawnmower, a ride-on lawnmower, a smart lawnmower, or a push lawnmower.

[0047] The frame 9 extends along the forward direction of the riding lawnmower. The running gear includes a drive motor and drive wheels 12 driven by the drive motor. The mowing component is located below the frame 9 and performs mowing operations. The power supply component is located on the frame 9 and includes a battery pack, at least for supplying power to the drive motor. The articulation components include a front articulation assembly 7 and a rear articulation assembly 10, both hinged between the frame 9 and the mowing component. The front articulation assembly 7, the mowing component, the rear articulation assembly 10, and the frame 9 cooperate to form a quadrilateral four-bar structure for adjusting the mounting height of the mowing component relative to the frame 9.

[0048] like Figures 2-6 As shown, the mowing component includes a mowing motor 6 and a cutter 13 disposed at the output end of the mowing motor. The mowing motor 6 drives the cutter 13 to rotate about the rotation axis. A minimum cylinder that encloses the cutter 13 is defined as the sweeping body 14 of the cutter 13. The sweeping body 14 is inclined. Specifically, the sweeping body 14 is arranged with the front lower and the rear higher along the forward direction of the mower, so that any point on the front side of the lower end of the sweeping body 14 is lower than any point on the rear side in the forward direction of the mower.

[0049] With the hinge component, after the installation height of the mowing component relative to the frame 9 changes, the height of any point on the front side of the sweeping body 14 formed during the rotation of the cutter 13 is still lower than the height of any point on the rear side.

[0050] This design is because the blade 13 rotates rapidly during the lawnmower's forward movement, forming a cylindrical sweeping body 14. When the sweeping body is in front of the rotation axis, it directly contacts the grass to perform the mowing action. However, when the sweeping body 14 formed by the blade 13 is behind the rotation axis, it is positioned above the cut grass surface. This avoids secondary contact and friction between the blade 13 and the grass, thus preventing repeated work and repeated mowing. This reduces the load, increases the overall machine's operating time, and prevents severe wear on the blade 13, extending its service life.

[0051] Preferably, the mowing component further includes a housing 5 for mounting the mowing motor 6, wherein the front hinge assembly 7 and the rear hinge assembly 10 are both hinged between the frame 9 and the housing 5 of the mowing component.

[0052] In one embodiment, the height difference between the foremost end point and the last end point of the lower end face of the sweep body 14 is 3mm-10mm.

[0053] In one embodiment, such as Figure 7 and Figure 8 As shown, the front articulation assembly 7 is hinged to the frame 9 at the front upper articulation point 1 and to the mowing component at the front lower articulation point 2. The rear articulation assembly 10 is hinged to the frame 9 at the rear upper articulation point 3 and to the mowing component at the rear lower articulation point 4. The distance between the front upper articulation point 1 and the front lower articulation point 2 is greater than the distance between the rear upper articulation point 3 and the rear lower articulation point 4.

[0054] Among them, such as Figures 7-9 As shown, the front articulation assembly 7 includes a front tie rod 701. The free end of the front tie rod 701 is hinged to the frame 9 via a locking pin 702. The free end of the front tie rod 701 passes through a through hole on the locking pin 702 and a locking nut 703 is screwed onto both ends of the locking pin 702.

[0055] Specifically, the front hinge assembly 7 includes a U-shaped front tie rod 701. The two free ends of the front tie rod 701 are hinged to the frame 9 via locking pins 702. Each free end of the front tie rod 701 passes through a through hole on the corresponding locking pin 702. Locking nuts 703 are screwed onto both sides of the locking pin 702 at each free end of the front tie rod 701. There are two front upper hinge points 1, two front lower hinge points 2, two rear upper hinge points 3, and two rear lower hinge points 4, all arranged symmetrically from left to right. The position where each free end of the front tie rod 701 is hinged to the frame 9 forms one of the front upper hinge points 1. The distance between the front upper hinge point 1 and the front lower hinge point 2 on the same side is greater than the distance between the rear upper hinge point 3 and the rear lower hinge point 4 on the same side. The distance between the front upper hinge point 1 and the front lower hinge point 2 on the same side can be adjusted by adjusting the position of the two locking nuts 703 at each free end of the front tie rod 701.

[0056] By adjusting the positions of the two locking nuts 703 at each free end of the front tie rod 701, the distance between the upper front hinge point 1 and the lower front hinge point 2 on the same side can be easily adjusted. This distance is called the third distance, and the distance between the upper rear hinge point 3 and the lower rear hinge point 4 on the same side is called the second distance. This allows adjustment of the ratio between the third and second distances. The upper front hinge point 1 is the hinge point formed by the hinge between the front hinge assembly 7 and the frame 9; the lower front hinge point 2 is the hinge point formed by the hinge between the front hinge assembly 7 and the lawnmower component; and the upper rear hinge point 3 is the hinge point formed by the hinge between the rear hinge assembly 1 and the frame 9. The hinge point formed by the hinge of 0 and the frame 9, and the lower rear hinge point 4 is the hinge point formed by the hinge of the rear hinge assembly 10 and the mowing component. Since the cutter 13 is part of the mowing component, the tilt angle of the sweeping body 14 formed by the cutter 13 during rotation can be adjusted, thereby adjusting the contact time between the cutter 13 and the grass during rotation. This allows for adjustment of the load reduction of the lawnmower and the improvement of the overall machine's runtime. In addition, the setting of two locking nuts 703 at each free end of the front tie rod 701 can prevent the wires from loosening between the corresponding free end of the front tie rod 701 and the locking pin 702, thus providing an anti-loosening effect.

[0057] Preferably, at least one of the locking nuts 703 is a flange nut. Since flange nuts are less likely to loosen, this improves the connection strength between the corresponding free end of the front tie rod 701 and the locking pin 702.

[0058] Preferably, two mounting plates are fixed on the frame 9. Each locking pin 702 passes through a mounting hole on a corresponding mounting plate. The through hole on the locking pin 702 is located on one side of the corresponding mounting plate. The locking pin 702 is also provided with an anti-detachment hole on the other side of the corresponding mounting plate, and an anti-detachment pin 704 is inserted into the anti-detachment hole. Figure 7 and Figure 9.

[0059] The lawnmower also includes an adjustment assembly hinged to the rear hinge assembly 10. By controlling the adjustment assembly and cooperating with the front hinge assembly 7 and the rear hinge assembly 10, the mounting height of the mowing component relative to the frame 9 can be adjusted. The specific structure of the adjustment assembly is detailed in the linkage mechanism of patent CN222017233U.

[0060] Preferably, such as Figure 7 and Figure 8 As shown, the adjustment component and the rear hinge component 10 are hinged at the adjustment hinge point 8. The distance between the adjustment hinge point 8 and the rear upper hinge point 3 is called the first distance, and the distance between the rear upper hinge point 3 and the rear lower hinge point 4 is called the second distance. The ratio between the first distance and the second distance is 0.65-0.85.

[0061] This allows the adjustment hinge point 8 to be set close to the lower rear hinge point 4, thus reducing effort when adjusting the mounting height of the mowing component relative to the frame 9 by controlling the adjustment assembly. Specifically, for example... Figure 10 As shown, when adjusting hinge point 8 is close to the lower rear hinge point 4, an upward force F1 is applied to the rear hinge assembly 10 at adjusting hinge point 8. The displacement vector, i.e., the lever arm, from the rotation fulcrum (i.e., the upper rear hinge point 3) to the point of application of force F1 (i.e., adjusting hinge point 8) is r1. Thus, the torque M1, composed of force F1 and lever arm r1, causes the rear hinge assembly 10 to rotate relative to the upper rear hinge point 3, where M1 = F1 × r1. Conversely, when adjusting hinge point 8 is far from the lower rear hinge point 4, an upward force F2 is applied to the rear hinge assembly 10 at adjusting hinge point 8. The displacement vector, i.e., the lever arm, from the rotation fulcrum (i.e., the upper rear hinge point 3) to the point of application of force F1 (i.e., adjusting hinge point 8) is r1. The displacement vector of the point of application of force F2, i.e. the adjustment hinge point 8, is r2. Thus, the torque M2 formed by the force F2 and the lever arm r2 causes the rear hinge assembly 10 to rotate relative to the rear upper hinge point 3, where M2 = F2 × r2. Since the adjustment hinge point 8 at F2 is far from the rear lower hinge point 4, while the adjustment hinge point 8 at F1 is close to the rear lower hinge point 4, this makes r2 < r1. When M1 = M2, then F1 < F2. Therefore, when the adjustment hinge point 8 is set close to the rear lower hinge point 4, it is relatively easier to adjust the installation height of the mowing component relative to the frame 9 by controlling the adjustment assembly.

[0062] in Figure 11 This is a schematic diagram illustrating the application of an upward force F1 to the rear hinge assembly 10 at the adjustment hinge point 8 to increase the mounting height of the mowing component relative to the frame 9. Figure 12 This is a schematic diagram showing the increased mounting height of the mowing component relative to the frame 9. Figure 11 The height difference between the top front end of the mid-frame 9 and the bottom front end of the housing 5 is h1. Figure 12The height difference between the top front end of the middle frame 9 and the bottom front end of the shell 5 is h2, and h1 > h2, then Figure 12 The mounting height of the middle mower component relative to frame 9 is greater than Figure 11 The mounting height of the grass-cutting component relative to frame 9.

[0063] Preferably, the distance between hinge point 8 and rear upper hinge point 3 is adjusted to 177mm, and the distance between rear upper hinge point 3 and rear lower hinge point 4 is 240mm.

[0064] Among them, when the mowing component is at different heights, the maximum height difference between any point on the front side and any point on the rear side of the lower end face of the sweeping body 14 is different.

[0065] The reason is that the adjusting component and the rear hinge component 10 are hinged at the adjusting hinge point 8, and if... Figure 7 , Figure 8 , Figure 11 and Figure 12 As shown, the rear hinge assembly 10 is located at the rear of the housing 5 of the mowing component. When the installation height of the mowing component relative to the frame 9 is adjusted by controlling the adjustment assembly and by cooperating with the front hinge assembly 7 and the rear hinge assembly 10, the height of the housing 5 in the mowing component changes. Since the distance between the front upper hinge point 1 and the front lower hinge point 2 is greater than the distance between the rear upper hinge point 3 and the rear lower hinge point 4, when the height of the housing 5 in the mowing component changes, the maximum height difference between any point on the front side and any point on the rear side of the sweeping body 14 formed by the cutter 13 located at the output end of the mowing motor on the housing 5 during rotation is different.

[0066] Preferably, when the mowing component is at its lowest height, the maximum height difference between any point on the front side and any point on the rear side of the lower end face of the sweeping body 14 is 3mm-5mm. This ensures that when the mowing component is at its lowest height, the maximum height difference between any point on the front side and any point on the rear side of the lower end face of the sweeping body 14 is not too large, thereby preventing significant unevenness in the lawn after mowing, specifically preventing the lawn from forming a V-shape after mowing.

[0067] In one embodiment, such as Figure 7 and Figure 8 As shown, the housing 5 includes a top wall 501 and a peripheral wall 502 extending downward from the edge of the top wall 501. The plane enclosed by the bottom edge of the peripheral wall 502 is parallel to the lower end face of the sweeping body 14. Figure 8 It can be seen that the horizontal height of the front end of the plane enclosed by the bottom edge of the housing circumference 502 is lower than that of the rear end. Preferably, there are two cutters 13 and two mowing motors 6. Each cutter 13 and its corresponding mowing motor 6 form a mowing assembly, and the two mowing assemblies are arranged symmetrically from left to right.

[0068] Preferably, the bottom end of the shell peripheral wall 502 extends laterally outward to form the shell bottom wall, and the outer edge of the shell bottom wall bends upward to form a flange 503, see Figure 7 and Figure 8 By combining the bottom wall of the shell with the flange 503 formed by bending the outer edge of the bottom wall of the shell upward, a reinforcing rib is added to the peripheral wall 502 of the shell, thereby effectively improving the strength of the peripheral wall 502 of the shell.

[0069] A rideable lawnmower includes a frame 9, a seat 11, a running gear, a mowing component, and a power supply component. The frame 9 extends along the forward direction of the rideable lawnmower; the seat 11 is mounted on the frame 9 and serves to carry the user; the running gear includes a drive motor and drive wheels 12 driven by the drive motor; the mowing component is located below the frame 9 and performs mowing operations; the power supply component is mounted on the frame 9 and includes a battery pack, at least for supplying power to the drive motor; the mowing component includes a mowing motor 6 and a cutter blade 13 located at the output end of the mowing motor 6, the mowing motor 6 drives the cutter blade 13 to rotate about a rotation axis, and along the forward and backward direction of the rideable lawnmower, the height of any point on the cutter blade 13 when it is located in front of the rotation axis is lower than its height when it is located behind the rotation axis.

[0070] In this way, when the cutter 13 is in front of the rotation axis during rotation, it directly contacts the grass to perform the cutting action. When the cutter 13 is behind the rotation axis during rotation, it is located above the grass plane after cutting. This avoids the cutter 13 contacting and rubbing against the grass, thereby avoiding repeated work, reducing the load and increasing the overall machine's operating time. It also prevents the cutter 13 from wearing out severely and extends its service life.

[0071] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A lawnmower, comprising: The frame (9) extends along the forward direction of the lawnmower; The driving component includes a drive motor and a drive wheel (12) driven by the drive motor; A mowing component is located below the frame (9) and is used to perform mowing operations; A power supply component, disposed on the vehicle frame (9) and including a battery pack, is used to supply power to the drive motor at least; Its features are, The mowing component includes a mowing motor (6) and a cutter (13) disposed at the output end of the mowing motor (6). The mowing motor (6) drives the cutter (13) to rotate about the rotation axis. A minimum cylinder that encloses the cutter (13) is defined as the sweeping body (14) of the cutter (13). The sweeping body (14) is inclined so that any point on the front side of the lower end of the sweeping body (14) is lower than any point on the rear side in the forward direction of the mower.

2. A lawnmower according to claim 1, characterized in that: The height difference between the foremost and last endpoints of the lower end face of the sweeping body (14) is 3mm-10mm.

3. A lawnmower according to claim 1, characterized in that: When the mowing component is at different heights, the maximum height difference between any point on the front side and any point on the rear side of the lower end face of the sweeping body (14) is different.

4. A lawnmower according to claim 3, characterized in that: When the mowing component is at its lowest height, the maximum height difference between any point on the front side and any point on the rear side of the lower end face of the sweeping body (14) is 3mm-5mm.

5. A lawnmower according to claim 1 or 3, characterized in that: It also includes a hinge component, which includes a front hinge assembly (7) and a rear hinge assembly (10). The front hinge assembly (7) is hinged to the frame (9) at the front upper hinge point (1) and to the mowing component at the front lower hinge point (2). The rear hinge assembly (10) is hinged to the frame (9) at the rear upper hinge point (3) and to the mowing component at the rear lower hinge point (4). The distance between the front upper hinge point (1) and the front lower hinge point (2) is greater than the distance between the rear upper hinge point (3) and the rear lower hinge point (4).

6. A lawnmower according to claim 5, characterized in that: The front articulation assembly (7) includes a front tie rod (701), the free end of which is hinged to the frame (9) via a locking pin (702). The free end of the front tie rod (701) passes through a through hole in the locking pin (702) and is screwed with a locking nut (703) at each end of the locking pin (702).

7. A lawnmower according to claim 6, characterized in that: At least one of the locking nuts (703) is a flange nut.

8. A lawnmower according to claim 5, characterized in that: It also includes an adjustment assembly hinged to the rear articulation assembly (10), which, by controlling the adjustment assembly and cooperating with the front articulation assembly (7) and the rear articulation assembly (10), adjusts the mounting height of the mowing component relative to the frame (9).

9. A lawnmower according to claim 8, characterized in that: The adjustment component and the rear hinge component (10) are hinged at the adjustment hinge point (8). The distance between the adjustment hinge point (8) and the rear upper hinge point (3) is called the first distance. The distance between the rear upper hinge point (3) and the rear lower hinge point (4) is called the second distance. The ratio between the first distance and the second distance is 0.65-0.

85.

10. A lawnmower according to claim 1, characterized in that: The mowing component also includes a housing (5) for mounting the mowing motor (6), the housing (5) including a housing top wall (501) and a housing peripheral wall (502) extending downward from the edge of the housing top wall (501), the plane enclosed by the bottom end of the housing peripheral wall (502) being parallel to the lower end face of the sweeping body (14).

11. A lawnmower according to claim 10, characterized in that: The bottom end of the shell peripheral wall (502) extends outward laterally to form the shell bottom wall, and the outer edge of the shell bottom wall bends upward to form a flange (503).

12. A ride-on lawnmower, comprising: The frame (9) extends along the forward direction of the riding lawnmower; A seat (11) is mounted on the frame (9) and is used to carry a user; The driving component includes a drive motor and a drive wheel (12) driven by the drive motor; A mowing component is located below the frame (9) and is used to perform mowing operations; A power supply component, disposed on the vehicle frame (9) and including a battery pack, is used to supply power to the drive motor at least; Its features are, The mowing component includes a mowing motor (6) and a cutter (13) disposed at the output end of the mowing motor (6). The mowing motor (6) drives the cutter (13) to rotate around the rotation axis. Along the front and rear direction of the riding mower, the height of any point on the cutter (13) when it is located in front of the rotation axis is lower than the height when it is located behind the rotation axis.

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