Blade group for mowing machine

Abstract

The utility model discloses a blade group for a mower. The blade group comprises a blade seat, a following seat, a blade pressing structure, a bottom cover plate and two mower blades, according to the blade set for the lawn mower, the two lawn mower blades are pressed and limited through the blade pressing structure, the two lawn mower blades are prevented from inclining and shaking during rotation, the stress area of the lawn mower blades is increased, and the stability of the lawn mower blades during rotation is improved; by means of the installation mode of the bottom cover plate and the blade pressing structure, two mower blades can be replaced conveniently; and the bottom cover plate can be conveniently taken down through the dismounting notch.

Description

Technical Field

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

[0002] A lawnmower, also known as a lawn trimmer, is a mechanical tool used to cut lawns and vegetation. It typically consists of a blade disc, motor, blades, handle, and control unit. When vegetation on a lawn grows long, it is trimmed to improve its appearance; this is where lawnmowers come in. Currently, lawnmowers are mostly used in parks, private lawns, and recreational areas. However, in existing lawnmowers, the blades are primarily supported by a central shaft, which can cause the blades to tilt during rotation, resulting in uneven cutting, poor stability, and inconvenient blade replacement. Utility Model Content

[0003] Purpose of the utility model: To provide a blade assembly for a lawnmower that has good stability during operation and allows for easy replacement of the lawnmower blades.

[0004] Technical solution: The blade assembly for a lawnmower provided by this utility model includes a blade holder, a follower seat, a blade pressing structure, a bottom cover plate, and two lawnmower blades;

[0005] The blade holder is mounted on the output shaft of the lawnmower via a follower mount; both lawnmower blades are mounted through the blade holder, and a blade pressing structure is mounted on the blade holder for pressing and positioning the two lawnmower blades; a bottom window is provided at the bottom of the blade holder; a removable bottom cover is mounted on the bottom window; a disassembly slot is provided on one edge of the bottom cover.

[0006] Furthermore, guide vanes are installed on the rear side of both sides of the lawnmower blades in the direction of rotation.

[0007] Furthermore, the blade pressing structure includes a positioning bolt and two pressing seats; blade windows are provided on the four vertical sides of the blade seat; opposite blade windows form a set, and the two sets of blade windows are located on the upper and lower sides of the blade seat respectively; two lawnmower blades pass through the two sets of blade windows respectively; the two pressing seats are located inside the blade seat and are used to press the two lawnmower blades respectively; the end of the positioning bolt passes through the lower lawnmower blade, the two pressing seats and the upper lawnmower blade in sequence and is screwed into the through end of the follower seat; the two pressing seats are snapped together.

[0008] Furthermore, each blade window is fitted with a U-shaped protective flange.

[0009] Furthermore, an internal hexagonal tube is fixed to the bottom cover plate; the bolt heads of the positioning bolts are inserted into the internal hexagonal tube.

[0010] Compared with the prior art, the advantages of this utility model are: the blade pressing structure is used to press and limit the two lawnmower blades, preventing the two lawnmower blades from tilting and shaking when rotating, increasing the force-bearing area of ​​the lawnmower blades, and improving the stability of the lawnmower blades when rotating; the installation method of the bottom cover plate and the blade pressing structure makes it easy to replace the two lawnmower blades; and the bottom cover plate can be easily removed using the disassembly slot. Attached Figure Description

[0011] Figure 1 This is the front view of the present invention;

[0012] Figure 2 This is a part drawing of the lawnmower blade of this utility model;

[0013] Figure 3 This is a right view of the blade holder of this utility model;

[0014] Figure 4 This is a bottom view of the blade holder of this utility model;

[0015] Figure 5 This is a cross-sectional view of the bottom cover plate of this utility model;

[0016] Figure 6 This is a cross-sectional view of the pressing seat of this utility model;

[0017] In the diagram: 1. Blade holder; 2. Follower seat; 3. Follower bolt; 4. Blade window; 5. Protective flange; 6. Lawn mower blade; 7. Guide plate; 8. Blade edge; 9. Pressing seat; 10. Positioning bolt; 11. Extension plate; 12. Positioning slot; 13. Positioning protrusion; 14. Hexagonal socket; 15. Bottom cover plate. Detailed Implementation

[0018] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings, but the protection scope of this utility model is not limited to the described embodiments.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] In the description of this utility model, it should be understood that the terms "left", "right", "front", "back", "up", "down", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and 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. Therefore, they should not be construed as limitations on this utility model.

[0021] Example 1:

[0022] like Figure 1-6 As shown, the blade assembly for a lawnmower provided by this utility model includes: a blade holder 1, a follower seat 2, a blade pressing structure, a bottom cover plate 15, and two lawnmower blades 6;

[0023] The follower seat 2 is fixed through to the top of the blade holder 1 for inserting the output shaft of the lawnmower; a follower bolt 3 for passing through the output shaft of the lawnmower is screwed onto the follower seat 2; both lawnmower blades 6 are installed through to the blade holder 1, and a blade pressing structure is installed on the blade holder 1 for pressing and positioning the two lawnmower blades 6; a bottom window is provided at the bottom of the blade holder 1; the edge of the bottom cover plate 15 is installed on the bottom window by a bottom screw cover; a disassembly slot 17 is provided on one side edge of the bottom cover plate 15.

[0024] The blade pressing structure is used to press and limit the two lawnmower blades 6 to prevent them from tilting and shaking when rotating, thereby increasing the force-bearing area of ​​the lawnmower blades 6 and improving their stability when rotating. The bottom cover plate 15 and the installation method of the blade pressing structure make it easy to replace the two lawnmower blades 6. The bottom cover plate 15 can be easily removed using the disassembly slot 17.

[0025] Furthermore, the two blades 8 of the lawnmower blade 6 are located on the front side of the rotation direction on both sides of the lawnmower blade 6; guide plates 7 are provided on the rear side of the rotation direction on both sides of the lawnmower blade 6. The guide plates 7 generate airflow during the rotation of the lawnmower blade 6, which straightens the grass blades and makes them easier for the lawnmower blade 6 to cut.

[0026] Furthermore, the blade pressing structure includes a positioning bolt 10 and two pressing seats 9; blade windows 4 are provided on the four vertical sides of the blade seat 1; the blade windows 4 on opposite vertical sides form a group and are positioned accordingly; the two groups of blade windows 4 are located on the upper and lower sides of the blade seat 1 respectively; two lawnmower blades 6 pass through the two groups of blade windows 4 respectively; the two pressing seats 9 are both located inside the blade seat 1; the end of the positioning bolt 10 passes through the lower lawnmower blade 6, the two pressing seats 9 and the upper lawnmower blade 6 in sequence and is screwed onto the through end of the follower seat 2; two extension plates 11 are fixed on the two pressing seats 9, passing through the corresponding side blade windows 4, and the corresponding lawnmower blade 6 is located between the two extension plates 11; the two pressing seats 9 on the same pressing seat 9 are used to fit the two vertical edges of the corresponding blade windows 4 respectively; a positioning slot 12 is provided on one pressing seat 9, and a positioning protrusion 13 inserted into the positioning slot 12 is provided on the other pressing seat 9.

[0027] Two extension plates 11 act as positioning latches between the pressing seat 9 and the lawnmower blade 6, so that the upper pressing seat 9 and the through end of the following seat 2 clamp the upper lawnmower blade 6, and the lower pressing seat 9 and the bolt head of the positioning bolt 10 clamp the lower lawnmower blade 6, improving the stability of the two lawnmower blades 6; the cooperation between the positioning slot 12 and the positioning protrusion 13 limits and locks the two pressing seats 9; by replacing the pressing seats 9 with different thicknesses, it can accommodate lawnmower blades 6 of different thicknesses, ensuring the installation stability of the lawnmower blades 6 and improving versatility.

[0028] Furthermore, each blade window 4 is fitted with a U-shaped protective flange 5; the upper protective flange 5 opens upwards, and the lower protective flange 5 opens downwards. The protective flange 5 provides a certain degree of protection against bending of the lawnmower blade 6.

[0029] Furthermore, an internal hexagonal tube 14 is fixed to the upper side of the bottom cover plate 15; the bolt head of the positioning bolt 10 is inserted into the internal hexagonal tube 14. By using the internal hexagonal tube 14 to insert the bolt head of the positioning bolt 10, the positioning bolt 10 is rotated and limited, preventing the positioning bolt 10 from loosening during the operation of the lawnmower.

[0030] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made to the present invention without departing from the spirit and scope of the appended claims.

Claims

1. A blade assembly for a lawnmower, characterized in that: Includes a blade holder (1), a follower seat (2), a blade pressing structure, a bottom cover (15), and two lawnmower blades (6); The blade holder (1) is mounted on the output shaft of the lawnmower via the follower seat (2); both lawnmower blades (6) are mounted through the blade holder (1), and the blade pressing structure is mounted on the blade holder (1) for pressing and positioning the two lawnmower blades (6); a bottom window is provided at the bottom of the blade holder (1); a detachable cover plate (15) is mounted on the bottom window; a disassembly slot (17) is provided on one side edge of the bottom cover plate (15).

2. The blade assembly for a lawnmower according to claim 1, characterized in that: A guide vane (7) is provided on the rear side of the rotation direction on both sides of the two lawnmower blades (6).

3. The blade assembly for a lawnmower according to claim 1, characterized in that: The blade pressing structure includes a positioning bolt (10) and two pressing seats (9); blade windows (4) are provided on the four vertical sides of the blade seat (1); opposite blade windows (4) form a group, and the two groups of blade windows (4) are located on the upper and lower sides of the blade seat (1) respectively; two lawnmower blades (6) pass through the two groups of blade windows (4) respectively; the two pressing seats (9) are located inside the blade seat (1) and are used to press the two lawnmower blades (6) respectively; the end of the positioning bolt (10) passes through the lower lawnmower blade (6), the two pressing seats (9) and the upper lawnmower blade (6) in sequence and is then threaded onto the through end of the follower seat (2); the two pressing seats (9) are snapped together.

4. The blade assembly for a lawnmower according to claim 3, characterized in that: Each blade window (4) is fitted with a U-shaped protective flange (5).

5. The blade assembly for a lawnmower according to claim 3, characterized in that: An internal hexagonal tube (14) is fixed on the bottom cover plate (15); the bolt head of the positioning bolt (10) is inserted into the internal hexagonal tube (14).

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