Lawn mower blade

Abstract

The utility model relates to a lawn mower blade, and belongs to the technical field of lawn mower accessories, the lawn mower blade comprises a blade body and a grinding assembly installed on the blade body, the blade body comprises a cutting edge part, the grinding assembly comprises a knife stone and a fixing bolt, wherein the knife stone is installed on the blade body in a sliding mode and used for grinding the cutting edge part, and the fixing bolt is used for limiting the knife stone to the blade body. The lawn mower blade polishing device has the effect of improving the polishing convenience of the lawn mower blade.

Description

Technical Field

[0001] The present application relates to the technical field of lawn mower accessories, and in particular to a lawn mower blade. Background Art

[0002] The lawn mower is a commonly used equipment in the garden, mainly used to trim the lawn in the garden, making the lawn more neat and beautiful. The lawn mower blade is one of the core components of the lawn mower. The lawn mower blade is mainly used to cut the grass in the lawn to achieve the purpose of trimming.

[0003] Since the blade of the lawn mower will become blunt after being used for a period of time, the lawn mower blade can be detachably installed on the lawn mower. When the lawn mower blade becomes blunt, the staff can remove the lawn mower blade, grind the blade edge, and then reinstall the sharpened blade on the lawn mower for use.

[0004] However, each time the blade is removed for grinding, the staff needs to use tools to remove the blade from the lawn mower, and also needs to use tools to install the blade on the lawn mower during installation, which makes it inconvenient to grind the lawn mower blade. Utility Model Content

[0005] In order to improve the convenience of sharpening a lawn mower blade, the present application provides a lawn mower blade.

[0006] The present application provides a lawn mower blade, which adopts the following technical solution:

[0007] A lawn mower blade comprises a blade body and a grinding assembly mounted on the blade body, wherein the blade body comprises a cutting edge portion, and the grinding assembly comprises a whetstone slidably mounted on the blade body to grind the cutting edge portion and a fixing bolt that limits the whetstone on the blade body.

[0008] In order to prevent the fingers of the staff from being scratched when grinding the blade, the grinding assembly also includes a protective frame connected to the grindstone for hand-holding.

[0009] In order to ensure that the whetstone can still better press against the blade after being worn during each grinding process, the grinding assembly also includes a driving spring for driving the whetstone to press against the blade, one end of the driving spring presses against the protective frame, and the other end presses against the whetstone.

[0010] In order to enable the whetstone to be connected to the protection frame and move synchronously with the protection frame, a connecting column is provided on the whetstone, and one end of the connecting column away from the whetstone passes through the protection frame and is installed on the protection frame through a nut.

[0011] A limiting plate is arranged at one end of the connecting column close to the blade portion, a groove for the limiting plate to be embedded is provided on one side of the whetstone close to the blade portion, and a through hole for the connecting column to pass through is provided at the bottom of the groove.

[0012] In order to grind both sides of the blade portion at the same time to improve the grinding efficiency, two whetstones are symmetrically arranged, both of which are connected to the protection frame, and the blade portion is located between the two whetstones.

[0013] In order to enable the blade body to have a better pruning and cutting effect on root vegetation or branches, the blade body also includes a serration portion, and the serration portion is located on a side of the blade body away from the blade edge portion.

[0014] The saw teeth of the sawtooth portion are arc-shaped saw teeth.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. When the blade needs to be sharpened, the staff can loosen the fixing bolts, and then use their hands to hold the protection frame to drive the grindstone to move. After the grinding is completed, the staff moves the protection frame to the initial position and then tightens the protection frame on the blade body through the fixing bolts. The entire grinding process does not require the blade body to be removed from the lawn mower, making grinding more convenient;

[0017] 2. Since the whetstone will be worn out every time it is sharpened, the drive spring will make the whetstone always have a tendency to press against the blade, thereby offsetting the gap between the whetstone and the blade due to wear, so that the whetstone can still keep a close fit with the blade body after multiple sharpenings;

[0018] 3. When root plants or branches appear in the lawn and the blade cannot be trimmed and cut well, the staff can remove the blade body and turn the blade body over and install it so that the serrations are the forward rotating surface, and then the serrations can be inserted into the rhizomes of the root plants and tear the rhizomes, thereby improving the versatility of the blade body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the lawn mower blade in the embodiment of the present application.

[0020] Figure 2 It is a partial enlarged view of the embodiment of the present application.

[0021] Figure 3 It is a cross-sectional view of the grinding assembly in the embodiment of the present application.

[0022] Explanation of the reference numerals: 1. blade body; 11. blade portion; 12. serrated portion; 2. grinding assembly; 21. whetstone; 211. groove; 212. through hole; 22. protective frame; 23. drive spring; 24. fixing bolt; 25. connecting column; 251. limit plate; 26. adjusting nut. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-3 This application is described in further detail.

[0024] The present application embodiment discloses a lawn mower blade. Figure 1 The lawn mower blade includes a blade body 1 and a grinding assembly 2. The grinding assembly 2 can slide on the blade body 1 to grind the blade body 1. When the blade body 1 does not need to be grinded, the grinding assembly 2 will be limited on the blade body 1. When the blade body 1 is grinded, the blade plate body does not need to be removed from the lawn mower, which improves the convenience of grinding the blade body 1.

[0025] Reference Figure 1 and Figure 2 The blade body 1 includes a blade portion 11 and a serrated portion 12, and the blade portion 11 and the serrated portion 12 are respectively located on opposite sides of the blade body 1. The blade portion 11 can cut the lawn well, while the serrated portion 12 can cut root plants or branches well. The user can choose to cut with the blade portion 11 or the serrated portion 12 according to the actual usage. Among them, under normal circumstances, the rotation direction of the blade body 1 is the direction of the blade portion 11. If it is necessary to trim and cut root plants, the blade body 1 is removed, turned over and rotated 180 degrees so that the serrated portion 12 faces the rotation direction of the blade body 1. The grinding component 2 is mainly used to grind the blade portion 11.

[0026] Reference Figure 1 and Figure 2 The teeth of the serration part 12 are arranged at intervals along the extension direction of the blade body 1, and the teeth of the serration part 12 are arc-shaped teeth, that is, the teeth are bent toward the rotation axis direction of the blade body 1. Such an arrangement enables the teeth of the serration part 12 to better hook the roots of root plants, thereby achieving cutting of root plants.

[0027] Reference Figure 2 and Figure 3The grinding assembly 2 includes a whetstone 21, a protective frame 22, a driving spring 23 and a fixing bolt 24. The whetstone 21 is connected to the protective frame 22. The user can drive the whetstone 21 to move by driving the protective frame 22, thereby grinding the blade portion 11. The driving spring 23 drives the whetstone 21 to press against the blade portion 11. When the grinding assembly 2 is not used, the protective frame 22 will be fixed to the blade plate body by the fixing bolt 24. In addition, two whetstones 21 are provided, and the two whetstones 21 are symmetrically arranged. The blade portion 11 is located between the two whetstones 21. When the protective frame 22 is moved, the two whetstones 21 can grind the two sides of the blade portion 11 respectively, thereby improving the grinding efficiency. Since two whetstones 21 are provided, two driving springs 23 are also provided, and the two driving springs 23 correspond to the two whetstones 21 one by one. The following is an example of the installation structure of a whetstone 21.

[0028] Reference Figure 2 and Figure 3 The protection frame 22 is a U-shaped frame, and the blade portion 11 is inserted into the protection frame 22. The fixing bolt 24 is installed on the protection frame 22. The blade body 1 is provided with a bolt hole for the threaded end of the fixing bolt 24 to pass through. After the threaded end of the fixing bolt 24 passes through the blade body 1, it will pass through the protection frame 22 again and protrude from the protection frame 22 to be exposed to the outside. Then, a nut is installed at one end of the fixing bolt 24 protruding from the protection frame 22, so that the protection frame 22 can be fixed on the blade body 1.

[0029] Reference Figure 2 and Figure 3 , a connecting column 25 is provided on the whetstone 21, and the whetstone 21 is connected to the protective frame 22 through the connecting column 25. Specifically, a limiting plate 251 is integrally formed at one end of the connecting column 25, and the size of the limiting plate 251 is larger than the outer diameter of the connecting column 25. A groove 211 is provided on the side of the whetstone 21 close to the blade portion 11 for the limiting plate 251 to be embedded (the limiting plate 251 will be completely located in the groove 211), and a through hole 212 that penetrates the whetstone 21 itself is provided at the bottom of the groove 211. The groove diameter of the groove 211 is larger than the hole diameter of the through hole 212 to form a stepped hole, and the connecting column 25 will pass through the through hole 212. A through hole is provided on the protective frame 22 for the connecting column 25 to pass through, and the end of the connecting column 25 that is away from the whetstone 21 passes through the through hole and is exposed to the outside, and an adjusting nut 26 is installed on the end of the connecting column 25 that protrudes from the through hole. Such arrangement, on the one hand, enables the whetstone 21 to be connected to the protective frame 22; on the other hand, when the whetstone 21 needs to be replaced, the adjusting nut 26 is loosened and the whetstone 21 is removed from the connecting column 25, thereby making the replacement of the whetstone 21 more convenient.

[0030] Reference Figure 2 and Figure 3Since the protection frame 22 is a U-shaped frame, the driving spring 23 is located inside the protection frame 22. The driving spring 23 is sleeved on the connecting column 25, and one end of the driving spring 23 abuts against the protection frame 22; the other end abuts against the whetstone 21, so that the whetstone 21 always has an elastic force to approach the blade portion 11.

[0031] The implementation principle of a lawn mower blade in the embodiment of the present application is as follows: when the blade portion 11 needs to be sharpened, the staff can loosen the fixing bolt 24, and then pinch the protection frame 22 by hand to drive the whetstone 21 to move back and forth on the blade portion 11. After the sharpening is completed, the protection frame 22 is moved to the initial position and fixed to the blade body 1 by the fixing bolt 24.

[0032] Among them, since the whetstone 21 will be worn each time it grinds the blade portion 11, the adjustment nut 26 can be loosened, and the whetstone 21 will always have a tendency to press against the blade portion 11 under the action of the drive spring 23, so that the whetstone 21 can still maintain a close fit with the blade body 1 after multiple grindings.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lawn mower blade, characterized in that: The invention comprises a blade body (1) and a grinding assembly (2) mounted on the blade body (1), wherein the blade body (1) comprises a blade edge portion (11), and the grinding assembly (2) comprises a whetstone (21) slidably mounted on the blade body (1) for grinding the blade edge portion (11), and a fixing bolt (24) for limiting the whetstone (21) on the blade body (1).

2. A lawn mower blade according to claim 1, characterized in that: The grinding assembly (2) also includes a protective frame (22) connected to the whetstone (21) for hand-holding.

3. A lawn mower blade according to claim 2, characterized in that: The grinding assembly (2) further comprises a driving spring (23) for driving the whetstone (21) to press against the blade portion (11); one end of the driving spring (23) abuts against the protection frame (22), and the other end abuts against the whetstone (21).

4. A lawn mower blade according to claim 3, characterized in that: A connecting column (25) is provided on the grindstone (21), and one end of the connecting column (25) facing away from the grindstone (21) passes through the protection frame (22) and is mounted on the protection frame (22) via a nut.

5. The lawn mower blade according to claim 4, characterized in that: A limiting plate (251) is arranged at one end of the connecting column (25) close to the blade portion (11); a side of the whetstone (21) close to the blade portion (11) is provided with an embedding groove (211) for embedding the limiting plate (251); and a through hole (212) for the connecting column (25) to pass through is provided at the bottom of the embedding groove (211).

6. The lawn mower blade according to claim 2, characterized in that: Two whetstones (21) are symmetrically arranged, and both of the two whetstones (21) are connected to the protection frame (22), and the blade portion (11) is located between the two whetstones (21).

7. The lawn mower blade according to claim 1, characterized in that: The blade body (1) further comprises a serration portion (12), wherein the serration portion (12) is located on a side of the blade body (1) facing away from the blade edge portion (11).

8. The lawn mower blade according to claim 7, characterized in that: The saw teeth of the sawtooth portion (12) are arc-shaped saw teeth.

Images