Mower blade

Abstract

The utility model provides a mower blade which comprises a base part, a blade body and a tilting part, the base part serves as a mounting carrier, and a mounting hole is formed in the base part; the blade body is formed by outwards extending the end part of the base part, the edge of the blade body is provided with a cutting edge, the end part of the blade body is upwards bent to form a first connecting part, the end part of the first connecting part is reversely bent to form a first cutter body, and the end part of the first cutter body is downwards bent to form a second connecting part; the end part of the second connecting part is reversely bent to form a second cutter body; and the tilting part is formed by upwards inclining and bending the rear end and / or the end part of the second cutter body. The mower blade is simple in structure, convenient to machine, high in structural strength, capable of greatly improving mowing efficiency and effect, good in use experience and long in service life.

Description

Technical Field

[0001] This utility model relates to a lawnmower, and more particularly to a lawnmower blade. Background Technology

[0002] Lawn mowers, widely used in garden maintenance, agriculture, and public greening, rely on their blade design for efficient vegetation cutting. Traditional lawn mower blades typically use flat metal blades that cut through rotation or reciprocating motion. However, as users' demands for mowing efficiency, safety, and environmental adaptability continue to increase, existing blade designs are gradually revealing the following technical shortcomings:

[0003] 1. Poor durability and impact resistance

[0004] When a flat blade encounters hard objects (such as rocks or tree roots), the impact force is concentrated at the edge or fixed point of the blade, which can easily cause the blade to curl, chip, or deform. At the same time, the continuous friction between the blade and the ground and grass stems accelerates the dulling of the edge, requiring frequent replacement or sharpening, thus increasing maintenance costs.

[0005] 2. Insufficient cutting efficiency and quality

[0006] Traditional flat blades rely on simple rotational kinetic energy to cut grass blades, lacking effective utilization of airflow. During operation, the rotating blades cannot create a stable upward airflow, causing the grass blades to be flattened rather than cut upright, resulting in poor cutting performance, especially for flattened grass or soft vegetation. In addition, the single cutting angle of the straight blades easily leads to repeated mowing or missed areas, resulting in an uneven lawn surface that requires multiple rework. Summary of the Invention

[0007] The technical problem to be solved by this utility model is to provide a lawnmower blade that is simple and compact in structure, high in strength, has good impact resistance and good mowing effect.

[0008] This utility model provides a lawnmower blade, comprising:

[0009] The base 11 serves as a mounting carrier, and the base 11 is provided with mounting holes 110.

[0010] The blade body extends outward from the end of the base 11 and has a cutting edge. The end of the blade body is bent upward to form a first connecting part 12. The end of the first connecting part 12 is bent in the opposite direction to form a first blade body 13. The end of the first blade body 13 is bent downward to form a second connecting part 14. The end of the second connecting part 14 is bent in the opposite direction to form a second blade body 15.

[0011] The raised portion 16 is formed by bending upwards at the rear end and / or end of the second blade body 15.

[0012] Furthermore, the length directions of the first blade 13 and the second blade 15 are parallel.

[0013] Furthermore, the plane containing the first connecting portion 12 and / or the second connecting portion 14 is inclined to the base portion 11.

[0014] Furthermore, the length of the blade side of the first blade 13 is greater than the length of the back side of the first blade 13.

[0015] Furthermore, the horizontal height of the blade side of the first blade 13 is higher than the horizontal height of the back side of the first blade 13.

[0016] Furthermore, the angle between the plane containing the first blade body 13 and the rotation direction of the blade body is greater than or equal to 1 degree and less than or equal to 10 degrees.

[0017] Furthermore, the horizontal height of the blade side of the second blade 15 is lower than the horizontal height of the back side of the second blade 15.

[0018] Furthermore, the angle between the plane containing the second blade body 15 and the rotation direction of the blade body is greater than or equal to 1 degree and less than or equal to 10 degrees.

[0019] Furthermore, the raised portion 16 bends upward in an arc shape around the bending line, and the length direction of the bending line is inclined to the length direction of the second blade 15.

[0020] Furthermore, the angle between the raised portion 16 and the second blade body 15 is greater than or equal to 10 degrees and less than or equal to 45 degrees.

[0021] Furthermore, the length of the second blade 15 is greater than or equal to the length of the first blade 13.

[0022] This utility model of a lawnmower blade features two blades formed by bending on different planes. This improves the overall structural strength of the blade, preventing the risk of chipping, cracking, or overall deformation when encountering hard objects. Furthermore, the blades on different planes, relative to the plane of each blade, reduce their relative length, increasing cutting force and facilitating the cutting of harder grass stems. The alternating cutting of the two blades further enhances mowing efficiency, resulting in high efficiency and good results. The raised section structure further improves the overall structural strength of the blade. During high-speed rotation, it generates an upward airflow that guides the grass stems upright towards the blade, making them easier to cut and preventing the grass from being flattened and affecting the mowing effect. It also prevents grass stems from tangling around the blade shaft, reducing jamming and further improving mowing efficiency. This utility model of a lawnmower blade has a simple structure, is easy to manufacture, has high structural strength, significantly improves mowing efficiency and results, provides a good user experience, and has a long service life. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the lawnmower blade of this utility model;

[0024] Figure 2 This is a schematic diagram of the lawnmower blade of this utility model from another angle;

[0025] Figure 3 This is a schematic diagram of the lower end structure of the lawnmower blade of this utility model;

[0026] Figure 4 This is a top view of the lawnmower blade of this utility model;

[0027] Figure 5 This is a front view of the lawnmower blade of this utility model;

[0028] Figure 6 This is a schematic diagram of the structure of a second embodiment of the lawnmower blade of this utility model;

[0029] Figure 7 This is a schematic diagram of another angle of the second embodiment of the lawnmower blade of this utility model. Detailed Implementation

[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] See Figures 1-7 This utility model provides a lawnmower blade, including a base 11 and a blade body.

[0032] The base 11 serves as a mounting carrier for fixed connection with the blade shaft (blade holder) of the lawnmower. The base 11 is provided with mounting holes 110 for bolts to pass through and achieve a fixed connection. In this application, the base 11 is a plate-shaped structure, preferably a cuboid plate-shaped structure.

[0033] The end of the base 11 extends outward to form a blade body. A blade is provided on the edge of the blade body, which faces the forward direction of the blade body during rotation to achieve grass cutting.

[0034] In this application, the end of the blade body is bent upward to form a first connecting part 12, the end of the first connecting part 12 is bent in the opposite direction (outward) to form a first blade body 13, the end of the first blade body 13 is bent downward to form a second connecting part 14, and the end of the second connecting part 14 is bent in the opposite direction (outward) to form a second blade body 15.

[0035] The above structure forms two blades located on different planes. This improves the overall structural strength of the blades, preventing the risk of chipping, breaking, or overall deformation when encountering hard objects. Furthermore, the blades on different planes, relative to the plane of each blade, reduce their relative length, increasing cutting force and facilitating the cutting of harder grass stems. The alternating cutting of the two blades provides two cutting directions and surfaces, enhancing mowing efficiency and resulting in high-efficiency and effective mowing.

[0036] The rear end or end of the second blade 15, or both the rear end and the end, are bent upwards to form a raised portion 16. The rear end of the second blade 15 refers to the end facing away from the blade, i.e., the back of the blade. This raised portion 16 can improve the overall structural strength of the blade. On the other hand, it can generate an upward airflow during high-speed rotation. Under the action of this airflow, the grass stems are guided to stand upright in the direction of the blade, making the grass stems easier to cut and preventing the grass leaves from being crushed and affecting the mowing effect. At the same time, it can prevent the grass stems from getting tangled in the blade shaft, reduce jamming, and further improve mowing efficiency.

[0037] In this application, the raised portion 16 bends upward in an arc around the bending line L. The length direction of the bending line is inclined to the length direction of the second blade 15. Specifically, one end of the bending line is located at the rear back of the second blade 15, and the other end is located at the end of the second blade 15. In this embodiment, the bending line is a straight line, and the angle between it and the length direction of the second blade is 30-45 degrees. The angle between the raised portion 16 and the second blade 15 is greater than or equal to 10 degrees and less than or equal to 45 degrees, preferably 30-45 degrees.

[0038] In this application, the length directions of the first blade 13 and the second blade 15 are parallel. Preferably, the length directions of the first blade 13, the second blade 15 and the base 11 are parallel. In this embodiment, the three are located on the same straight line. That is, from the top view, the first blade 13, the second blade 15 and the base 11 are arranged in a straight line, which can ensure the stability of the center of gravity during rotation, reduce vibration and improve operational safety.

[0039] Meanwhile, in this application, the planes where the first connecting part 12 and the second connecting part 14 are located are inclined to the plane where the base 11 is located. That is, the end of the blade body is bent upward to form the first connecting part 12; the end of the first blade body 13 is bent downward to form the second connecting part 14. The inclination angle between the first connecting part 12 and the second connecting part 14 is 30-60 degrees, preferably 45 degrees. This connecting part forms a reinforced structure, which can improve the overall rigidity and durability of the blade, reduce the risk of damage, and extend the service life.

[0040] In order to improve the mowing effect and efficiency, in this application, the first blade 13 is trapezoidal. Specifically, the length of the blade side of the first blade 13 is greater than the length of the back side of the first blade 13, that is, the length of the blade end of the first blade 13 is greater than the length of the back end, thus forming a trapezoidal structure with a long front end and a short rear end.

[0041] The two sides of the first blade 13 are bevels with opposite inclination directions. Preferably, the inclination of the inner side of the first blade 13 is greater than that of the outer side. The inner side refers to the edge of the first blade 13 near the base 11, and the outer side refers to the edge of the first blade 13 near the second blade 15. The inclination is the angle between the side edge of the first blade 13 and its length direction. The inclination of the inner edge is greater than that of the outer edge, that is, the angle between the inner edge of the first blade 13 and its length direction is greater than the angle between the outer edge of the first blade 13 and its length direction. In this embodiment, the inclination of the inner and outer sides is 70-85 degrees.

[0042] To further improve structural strength and facilitate overall cutting, in this application, the horizontal height of the blade side of the first blade 13 is higher than the horizontal height of the back side of the first blade 13, that is, the front end of the first blade 13 is higher than the rear end of the first blade 13, and the front end (blade) of the first blade 13 is inclined upward. In this embodiment, the angle between the plane where the first blade 13 is located and the rotation direction of the blade body is greater than or equal to 1 degree and less than or equal to 10 degrees. The rotation direction, that is, the plane perpendicular to the drive shaft, is usually a horizontal plane, which can improve the overall rigidity of the blade, reduce the deformation of the blade when rotating at high speed, ensure cutting accuracy and stability, and improve the overall performance and user experience of the lawnmower. At the same time, the horizontal height of the blade side of the second blade 15 in this application is lower than the horizontal height of the back side of the second blade 15, that is, the front blade of the second blade 15 is lower than the rear end, forming a downward inclined blade structure. This design allows the blade to cut into the grass better during rotation, reduce resistance, and improve cutting efficiency. Meanwhile, the tilt angle of the blade optimizes the discharge path of grass clippings, avoiding clogging and entanglement problems. In this embodiment, the angle between the plane where the second blade body 15 is located and the rotation direction of the blade body is greater than or equal to 1 degree and less than or equal to 10 degrees.

[0043] In this application, a blade body may be provided at one end of the base 11, see reference. Figures 1-5 Alternatively, blade bodies can be provided at both ends of the base 11, see reference. Figures 6-7 When there are two blades, they are arranged in a circumferentially evenly distributed manner. Since there are two blades, the overall length of the blades is relatively long. In order to improve rigidity and structural strength, a reinforcing structure 111 is provided on the base 11, which is a protruding structure formed by stamping. The blade body is provided at one or both ends of the base 11, which can form lawnmower blades of different lengths for different types of lawnmowers.

[0044] In this application, the lawnmower blade is formed entirely from a rectangular steel plate through stamping and bending.

[0045] This utility model of a lawnmower blade features two blades formed by bending on different planes. This improves the overall structural strength of the blade, preventing the risk of chipping, cracking, or overall deformation when encountering hard objects. Furthermore, the blades on different planes, relative to the plane of each blade, reduce their relative length, increasing cutting force and facilitating the cutting of harder grass stems. The alternating cutting of the two blades further enhances mowing efficiency, resulting in high efficiency and good results. The raised section structure further improves the overall structural strength of the blade. During high-speed rotation, it generates an upward airflow that guides the grass stems upright towards the blade, making them easier to cut and preventing the grass from being flattened and affecting the mowing effect. It also prevents grass stems from tangling around the blade shaft, reducing jamming and further improving mowing efficiency. This utility model of a lawnmower blade has a simple structure, is easy to manufacture, has high structural strength, significantly improves mowing efficiency and results, provides a good user experience, and has a long service life.

[0046] 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 modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lawnmower blade, characterized in that, include: The base serves as a mounting carrier, and the base is provided with mounting holes; The blade body extends outward from the base end and has a cutting edge. The end of the blade body is bent upward to form a first connecting part. The end of the first connecting part is bent in the opposite direction to form a first blade body. The end of the first blade body is bent downward to form a second connecting part. The end of the second connecting part is bent in the opposite direction to form a second blade body. The raised portion is formed by bending upwards at the rear end and / or end of the second blade body.

2. The lawnmower blade as described in claim 1, characterized in that: The length direction of the first blade is parallel to that of the second blade.

3. The lawnmower blade as described in claim 1, characterized in that: The plane containing the first connecting portion and / or the second connecting portion is inclined to the base.

4. The lawnmower blade as described in claim 1, characterized in that: The length of the cutting edge side of the first blade is greater than the length of the back side of the first blade.

5. The lawnmower blade as described in claim 1, characterized in that: The horizontal height of the cutting edge side of the first blade is higher than the horizontal height of the back side of the first blade.

6. The lawnmower blade as described in claim 5, characterized in that: The angle between the plane containing the first blade body and the rotation direction of the blade body is greater than or equal to 1 degree and less than or equal to 10 degrees.

7. The lawnmower blade as described in claim 1, characterized in that: The horizontal height of the cutting edge side of the second blade is lower than the horizontal height of the back side of the second blade.

8. The lawnmower blade as described in claim 7, characterized in that: The angle between the plane containing the second blade body and the rotation direction of the blade body is greater than or equal to 1 degree and less than or equal to 10 degrees.

9. The lawnmower blade as described in claim 1, characterized in that: The raised portion bends upward in an arc around the bending line, and the length direction of the bending line is inclined to the length direction of the second blade body.

10. The lawnmower blade as described in claim 1, characterized in that: The angle between the raised portion and the second blade body is greater than or equal to 10 degrees and less than or equal to 45 degrees.

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