Double-layer tool apron for mowing machine

Abstract

The utility model discloses a double-layer tool apron for a mower. The double-layer tool apron comprises a shell, a bottom cover and two blade mounting seats, according to the double-layer tool apron for the mowing machine, a blade can be positioned and installed through cooperation of the flat pipe, the positioning bolt and the positioning nut, the blade can swing in a small range when rigidly blocked while the blade is kept horizontal through the flat pipe, and the possibility that the blade is broken and splashed is reduced; the bottom cover is detachably mounted on the positioning bolt, so that a certain rotation limiting effect on the positioning bolt can be achieved, and the positioning bolt is prevented from loosening during rotation; the structure that the flat tube extends out of the shell is utilized, so that the blades are easy to assemble, disassemble and replace, and the types of the blades can be adaptively replaced according to mowing requirements.

Description

Technical Field

[0001] This utility model relates to a blade holder, and more particularly to a double-layer blade holder 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, existing lawnmowers often lack blades that can be easily changed to suit different cutting needs. Utility Model Content

[0003] Purpose of the utility model: To provide a double-layer blade holder for a lawnmower, which can adapt to the need for mowing by changing different types of blades.

[0004] Technical Solution: The present invention provides a double-layer blade holder for a lawnmower, comprising a housing, a bottom cover, and two blade mounting seats; both blade mounting seats are located inside the housing; two flat tubes for mounting blades are fixed on each of the two blade mounting seats; each flat tube extends out of the housing, and the four flat tubes are arranged in a cross shape when viewed from above; a positioning bolt is vertically threaded onto the inner top surface of the housing, and the positioning bolt vertically penetrates the middle of the two blade mounting seats; a bottom window is provided at the bottom of the housing; the bottom cover is detachably mounted on the bolt head of the positioning bolt for embedding and covering the bottom window; a follower seat for mounting on the output shaft of the lawnmower is provided on the top surface of the housing.

[0005] Furthermore, blade windows are provided on all four vertical sides of the housing; the blade windows on two opposite sides form a group, and the two blade windows in the same group are in corresponding positions; the two groups of blade windows are located on the upper and lower sides of the housing respectively; the flat tubes of the two blade mounting seats pass through the two groups of blade windows respectively.

[0006] Furthermore, an internal hexagonal tube for inserting the bolt head of the positioning bolt is rotatably mounted on the upper side of the bottom cover; an annular groove is coaxially provided on the bolt head of the positioning bolt; multiple locking tubes are connected on the internal hexagonal tube; a locking rod is telescopically installed on each locking tube, with one end extending into the internal hexagonal tube, and the extended end of the locking rod is hemispherical for locking onto the annular groove; a locking spring is supported between the other end of each locking rod and the bottom of the corresponding locking tube.

[0007] Furthermore, each of the two blade mounting seats is provided with a snap-fit ​​groove and a snap-fit ​​protrusion inserted into the snap-fit ​​groove.

[0008] Furthermore, two arc-shaped holes are provided on the bottom cover; two limiting protrusions, which pass through the two arc-shaped holes respectively, are fixed on the internal hexagonal tube.

[0009] Compared with the prior art, the advantages of this utility model are as follows: the cooperation between the flat tube, the positioning bolt, and the positioning nut enables the blade to be positioned and installed. While ensuring the blade is horizontal, the flat tube allows the blade to swing slightly when rigidly blocked, reducing the possibility of blade breakage and splashing. The bottom cover is detachably installed on the positioning bolt, which can play a certain role in limiting the rotation of the positioning bolt and prevent the positioning bolt from loosening during rotation. The structure of the flat tube extending out of the shell makes the blade easy to install, remove, and replace, and the type of blade can be adapted to the grass cutting needs. Attached Figure Description

[0010] Figure 1 This is the front view of the present invention;

[0011] Figure 2 This is the left view of the present invention;

[0012] Figure 3 This is a bottom view of the present invention;

[0013] Figure 4 This is a sectional view of the bottom cover of this utility model;

[0014] Figure 5 This is a cross-sectional view of the blade mounting base of this utility model;

[0015] In the diagram: 1. Housing; 2. Blade window; 3. Follower seat; 4. Follower bolt; 5. Blade mounting seat; 6. Snap-in groove; 7. Snap-in protrusion; 8. Flat tube; 9. Blade locking bolt; 10. Positioning bolt; 11. Annular groove; 12. Hexagonal socket; 13. Locking tube; 14. Locking rod; 15. Locking spring; 16. Bottom cover; 17. Bottom window; 18. Arc-shaped hole; 19. Limiting protrusion; 20. Disassembly slot. Detailed Implementation

[0016] 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.

[0017] 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.

[0018] 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.

[0019] Example 1:

[0020] like Figure 1-5 As shown, the double-layer blade holder for a lawnmower provided by this utility model includes: a housing 1, a bottom cover 16, and two blade mounting seats 5;

[0021] Both blade mounting seats 5 are located inside the housing 1; two flat tubes 8 are fixed on each of the two blade mounting seats 5; each flat tube 8 extends out of the housing 1, and the four flat tubes 8 are arranged in a cross shape when viewed from above; a blade locking bolt 9 for penetrating the blade is provided through the flat tube 8; a positioning nut is threaded onto the penetrating end of the blade locking bolt 9; a positioning bolt 10 is threaded vertically on the inner top surface of the housing 1, and the positioning bolt 10 vertically penetrates the middle of the two blade mounting seats 5; a bottom window 17 is provided at the bottom of the housing 1; a bottom cover 16 is detachably mounted on the bolt head of the positioning bolt 10 for embedding and covering the bottom window 17; a follower seat 3 for inserting the output shaft of the lawnmower is provided on the top surface of the housing 1; a follower bolt 4 for penetrating the output shaft of the lawnmower is threaded onto the follower seat 3.

[0022] The blade can be positioned and installed by using the cooperation between the flat tube 8, the blade locking bolt 9, and the positioning nut. The flat tube 8 ensures that the blade is horizontal while allowing it to swing slightly when rigidly blocked, reducing the possibility of blade breakage and splashing. The bottom cover 16 is detachably installed on the positioning bolt 10, which can limit the rotation of the positioning bolt and prevent it from loosening during rotation. The structure of the flat tube 8 extending out of the housing 1 makes the blade easy to install, remove, and replace, and the type of blade can be adapted to the grass cutting needs.

[0023] Furthermore, blade windows 2 are provided on all four vertical sides of the housing 1; the blade windows 2 on two opposite sides form a group, and the two blade windows 2 in the same group are in corresponding positions; the two groups of blade windows 2 are located on the upper and lower sides of the housing 1 respectively; the flat tubes 8 of the two blade mounting seats 5 pass through the two groups of blade windows 2 respectively.

[0024] By utilizing the different heights of the two sets of blade windows 2, the blades on the double-layer blade holder are divided into upper and lower layers, improving the efficiency and effectiveness of mowing.

[0025] Furthermore, an internal hexagonal tube 12 for inserting the bolt head of the positioning bolt 10 is rotatably mounted on the upper side of the bottom cover 16; an annular groove 11 is coaxially provided on the bolt head of the positioning bolt 10; multiple locking tubes 13 are connected on the internal hexagonal tube 12; a locking rod 14 is telescopically installed on each locking tube 13, with one end extending into the internal hexagonal tube 12, and the extended end of the locking rod 14 is hemispherical for locking onto the annular groove 11; a guide groove is provided along the length direction inside the locking tube 13, and a locking slider that slides with the guide groove is provided on the corresponding locking rod 14; a locking spring 15 is supported between the other end of each locking rod 14 and the bottom of the corresponding locking tube 13; and a disassembly slot 20 is provided on one side edge of the bottom cover 16.

[0026] The locking spring 15 drives the hemispherical end of the locking rod 14 to extend into the internal hexagonal tube 12 and then snap onto the annular groove 11. The hemispherical end of the locking rod 14 makes the bottom cover 16 easy to install and remove, realizing the detachable installation of the bottom cover 16, and facilitating the replacement of the blade after removing and installing the positioning bolt 10.

[0027] Furthermore, a snap-fit ​​groove 6 is provided on the lower side of the upper blade mounting base 5, and a snap-fit ​​protrusion 7 inserted into the snap-fit ​​groove 6 is fixed on the upper side of the lower blade mounting base 5.

[0028] The two blade mounting seats 5 are locked together by the engagement between the snap-fit ​​groove 6 and the snap-fit ​​protrusion 7.

[0029] Furthermore, two arc-shaped holes 18 are provided on the bottom cover 16; two limiting protrusions 19, which pass through the two arc-shaped holes 18 respectively, are fixed on the internal hexagon tube 12.

[0030] By utilizing the engagement between the two arc-shaped holes 18 and the two limiting protrusions 19, the internal hexagonal tube 12 can be rotated slightly, ensuring that the bolt head of the positioning bolt can be inserted into the internal hexagonal tube 12.

[0031] 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 double-layer blade holder for a lawnmower, characterized in that: The device includes a housing (1), a bottom cover (16), and two blade mounting seats (5); both blade mounting seats (5) are located inside the housing (1); two flat tubes (8) for mounting blades are fixed on each of the two blade mounting seats (5); each flat tube (8) extends out of the housing (1), and the four flat tubes (8) are arranged in a cross shape when viewed from above; a positioning bolt (10) is vertically threaded on the inner top surface of the housing (1), and the positioning bolt (10) vertically penetrates the middle of the two blade mounting seats (5); a bottom window (17) is provided at the bottom of the housing (1); the bottom cover (16) is detachably mounted on the bolt head of the positioning bolt (10) for embedding and covering the bottom window (17); a follower seat (3) for mounting on the output shaft of a lawnmower is provided on the top surface of the housing (1).

2. The double-layer blade holder for a lawnmower according to claim 1, characterized in that: Blade windows (2) are provided on all four vertical sides of the housing (1); the blade windows (2) on two opposite sides are a group, and the two blade windows (2) in the same group are in corresponding positions; the two groups of blade windows (2) are located on the upper and lower sides of the housing (1) respectively; the flat tubes (8) of the two blade mounting seats (5) pass through the two groups of blade windows (2) respectively.

3. The double-layer blade holder for a lawnmower according to claim 1, characterized in that: An internal hexagonal tube (12) for inserting the bolt head of the positioning bolt (10) is rotatably mounted on the upper side of the bottom cover (16); an annular groove (11) is coaxially provided on the bolt head of the positioning bolt (10); multiple locking tubes (13) are connected on the internal hexagonal tube (12); a locking rod (14) with one end extending into the internal hexagonal tube (12) is telescopically installed on each locking tube (13), and the end of the locking rod (14) is hemispherical for locking onto the annular groove (11); a locking spring (15) is supported between the other end of each locking rod (14) and the bottom of the corresponding locking tube (13).

4. The double-layer blade holder for a lawnmower according to claim 1, characterized in that: Each of the two blade mounting seats (5) is provided with a snap-fit ​​groove (6) and a snap-fit ​​protrusion (7) inserted into the snap-fit ​​groove (6).

5. The double-layer blade holder for a lawnmower according to claim 1, characterized in that: Two arc-shaped holes (18) are provided on the bottom cover (16); two limiting protrusions (19) that pass through the two arc-shaped holes (18) are fixed on the internal hexagonal tube (12).

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