Grass trimming head of mower with anti-winding function

Abstract

The utility model discloses a mowing head of a mowing machine with an anti-winding function, which comprises a mounting seat, an output shaft rotationally mounted in the mounting seat, a mowing disc sleeved on the output shaft in a penetrating manner, and a limiting piece mounted on the output shaft and used for limiting the separation of the mounting seat and the mowing disc, and a dustproof baffle disc is arranged between the mounting seat and the mowing disc. The dustproof blocking disc comprises a fixed disc and a rotating disc, the fixed disc is arranged on the output shaft in a penetrating and sleeving mode, the output shaft can drive the fixed disc and the mowing disc to rotate, the rotating disc is rotationally connected with the fixed disc, the installing base is covered with the rotating disc, and the rotating disc is attached to the mowing disc. The grass mowing head has the advantages that the dustproof baffle disc is arranged between the mounting seat and the grass mowing disc, the mounting seat is covered with the dustproof baffle disc, the dustproof baffle disc is attached to the grass mowing disc, parts are in close fit, gaps are reduced, grass roots or grass branches laid by the grass mowing head are prevented from entering the grass mowing head from the gaps and winding the output shaft, and work of the grass mowing head is not affected; and the working efficiency of the grass trimming head is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to a lawn mower head with an anti-entanglement function for grass branches when mowing grass with a lawn mower, and in particular to a lawn mower head with an anti-entanglement function. Background Art

[0002] As people's requirements for quality of life increase, the living environment has become an issue that people are more and more concerned about. People usually build a large number of lawns, gardens, golf courses, etc. in cities and homes to beautify the environment. However, lawns, gardens, golf courses, etc. need to be regularly maintained so that the lawns that have become undulating and messy after a period of free growth can become neat and pleasing to the eye. As a garden tool for taking care of grass, lawn mowers are becoming more and more popular among users.

[0003] For example, the patent disclosed in the publication number CN113575170A discloses a grass trimmer head and a grass trimmer, which include a transmission component housing and a head shell. A motor and a transmission component are provided between the transmission component housing and the head shell to drive the transmission component housing and the head shell to rotate synchronously. As shown in the drawings in the patent specification, the transmission component housing is provided with slots for heat dissipation and an impeller that rotates synchronously with the transmission component.

[0004] The existing mower head structure has the following problems: grass roots or branches knocked down by the mower head can easily enter the interior of the mower head through the slots on the transmission assembly housing, entangle the transmission assembly and the motor, and cause damage to the mower head. Utility Model Content

[0005] The utility model aims to solve the problem that grass clippings are easily entangled with a mowing head, and the technical problem to be solved by the utility model is to provide a mowing head of a lawn mower with an anti-entanglement function.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is as follows: a mower head of a lawn mower with an anti-entanglement function includes a mounting seat, an output shaft rotatably mounted in the mounting seat, a mowing disc sleeved on the output shaft, and a limiting member installed on the output shaft and limiting the separation of the mounting seat and the mowing disc; a dust shield is provided between the mounting seat and the mowing disc, the dust shield includes a fixed disc and a rotating disc, the fixed disc is sleeved on the output shaft, the output shaft can drive the fixed disc and the mowing disc to rotate, the rotating disc is rotatably connected to the fixed disc, the rotating disc is covered outside the mounting seat, and the rotating disc is close to the mowing disc.

[0007] A further preferred solution of the present invention is that: an annular groove is provided on the fixed disk, and a clamping edge that can be elastically deformed and can be clamped into the annular groove is provided on the rotating disk.

[0008] A further preferred solution of the present utility model is that: a protrusion is provided on the fixing disc, and an insertion cavity for inserting the protrusion is provided on the mowing disc.

[0009] A further preferred solution of the present invention is that the limiting member adopts a nut or a retaining spring.

[0010] A further preferred solution of the present invention is that the output shaft and the mowing disc, and the output shaft and the fixed disc are matched through a spline structure.

[0011] A further preferred solution of the present invention is that an inclined surface is provided in the spline keyway on the output shaft that matches the fixed disk to limit the installation depth of the fixed disk on the output shaft.

[0012] A further preferred solution of the present invention is that: an inner ring convex edge is provided on the fixed disk, and a spline structure for matching the fixed disk and the output shaft is provided on the inner ring convex edge.

[0013] A further preferred solution of the present invention is that: a mounting cavity for mounting the output shaft is provided on the mounting seat, and the inner ring convex edge is located in the mounting cavity.

[0014] A further preferred solution of the present invention is that the fixing plate is provided with an outer ring ridge located outside the inner ring ridge, and the mounting seat is provided with an annular groove located outside the mounting cavity, and the outer ring ridge is inserted into the annular groove.

[0015] A further preferred solution of the present invention is that: a through hole is provided on the mounting seat, the through hole is connected to the annular groove, and a positioning hole that can be aligned with the through hole is provided on the outer ring flange.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] A dustproof baffle is provided between the mounting seat and the mowing disc. The dustproof baffle covers the mounting seat and fits the mowing disc. The parts fit closely together to reduce gaps, thereby preventing grass roots or grass branches knocked down by the mowing head from entering the mowing head through the gaps and wrapping around the output shaft, affecting the work of the mowing head, and effectively improving the working efficiency of the mowing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as limiting the scope of the present invention. In addition, unless otherwise specified, the drawings only conceptually represent the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1This is a schematic diagram of the overall structure of the grass trimming head;

[0020] Figure 2 for Figure 1 Schematic cross-section diagram;

[0021] Figure 3 for Figure 1 Exploded diagram;

[0022] Figure 4 Schematic diagram of the overall structure of the mounting base;

[0023] Figure 5 It is the overall structural diagram of the output shaft;

[0024] Figure 6 One of the cutaway diagrams showing the insertion of the rotating disk into the fixed disk;

[0025] Figure 7 The second cross-sectional diagram of the rotating disk being inserted into the fixed disk;

[0026] Figure 8 This is a partial exploded view of the mowing disc.

[0027] In the figure: 1. Mounting seat; 2. Mowing disc; 3. Limiting piece; 4. Blade; 5. Dust shield disc; 6. Mounting cavity; 7. Output shaft; 8. Insertion cavity; 9. First annular groove; 10. Second annular groove; 11. Protrusion; 12. Inner ring convex edge; 13. Outer ring convex edge; 14. Fixed disc; 15. Rotating disc; 16. Lower edge; 17. Through hole; 18. Spline; 19. Inclined surface; 20. Bump; 21. Protrusion; 22. Annular groove; 23. Clamping edge; 24. Gourd mouth. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0029] It should be noted that like reference numerals denote like items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0030] This embodiment mainly describes the mower head with an anti-entanglement function, as follows:

[0031] like Figure 1As shown, the mower head of the lawn mower with an anti-entanglement function includes a mounting base 1, an output shaft 7 rotatably mounted in the mounting base 1, a mowing disc 2 sleeved on the output shaft 7, and a limit member 3 mounted on the output shaft 7 and limiting the separation of the mounting base 1 and the mowing disc 2. A dust baffle 5 is provided between the mounting base 1 and the mowing disc 2 to prevent grass clippings from entering the interior of the mowing head.

[0032] The mounting base 1 is connected to the lawn mower, and a mounting cavity 6 is provided in the mounting base 1. The output shaft 7 is rotatably installed in the mounting cavity 6 to ensure the installation accuracy and stability of the output shaft 7. The lawn mower power supply is connected to the output shaft 7 through an electric wire and provides power for the rotation of the output shaft 7.

[0033] like Figure 4 As shown, an annular groove is provided on the mounting seat 1 , and the annular groove is divided into a first annular groove 9 and a second annular groove 10 for installation and insertion of the dust baffle 5 .

[0034] like Figure 5 As shown, the output shaft 7 can be divided into three ends, and the lower end of the output shaft 7 is connected to the dust baffle plate 5. Specifically, a spline 18 is provided on the lower end of the output shaft 7, and a through hole is provided in the middle of the dust baffle plate 5. A keyway corresponding to the spline 18 is provided in the hole. The lower end of the output shaft 7 and the dust baffle plate 5 are connected and fixed by means of the spline 18, and an inclined surface 19 is provided between the spline 18 and the spline 18 at the lower end of the output shaft 7. When the dust baffle plate 5 is installed to the lower end of the output shaft 7, the inclined surface 19 between the splines 18 limits the installation depth of the dust baffle plate 5 at the lower end of the output shaft 7. At the same time, the setting of the inclined surface 19 can also increase the friction between the dust baffle plate 5 and the output shaft 7, thereby improving the transmission efficiency.

[0035] The middle end of the output shaft 7 is connected to the mowing disc 2. Specifically, a plurality of protrusions 20 are provided on the middle end of the output shaft 7. Preferably, there are six protrusions 20, which pass through the middle of the mowing disc 2. A protrusion 21 is provided on the side wall of the protrusion. The protrusion 21 is clamped between the protrusions 20, so that the mowing disc 2 rotates synchronously when the output shaft 7 rotates.

[0036] A thread is provided on the upper end of the output shaft 7, and the output shaft 7 is connected to the limit member 3 through a thread. The limit member 3 is a nut, which limits the separation of the mounting seat 1, the dust baffle 5 and the mowing disc 2. In other embodiments, the limit member 3 can also be a retaining spring, which is clamped on the output shaft 7 through the retaining spring, so that the retaining spring limits the mowing disc 2 from separating from the output shaft 7.

[0037] like Figure 6 、 7 As shown, the dust shield plate 5 includes a fixed plate 14 and a rotating plate 15. The fixed plate 14 is sleeved on the output shaft 7 in a spline connection manner. The output shaft 7 can drive the fixed plate 14 to rotate.

[0038] The fixed disk 14 is provided with an inner ring flange 12 and an outer ring flange 13. The spline 18 structure for matching the fixed disk 14 with the output shaft 7 is set on the inner ring flange 12, which reduces the volume of the fixed disk 14 and reduces the production cost. The inner ring flange 12 is located in the mounting cavity 6, and the inner ring flange 12 can increase the strength of the fixed disk 14 and improve the connection stability between it and the output shaft 7.

[0039] The outer ring flange 13 is located outside the inner ring flange 12 and in the first annular groove 9 outside the mounting cavity 6 . The outer ring flange 13 is inserted into the first annular groove 9 , which can further improve the connection stability between the fixing plate 14 and the mounting seat 1 .

[0040] A positioning hole is provided on the outer ring flange 13, and a through hole 17 is provided on the mounting seat 1. The through hole 17 connects the space outside the mounting seat 1 and the first annular groove 9. When removing the grass trimmer head, align the positioning hole on the outer ring flange 13 with the through hole 17 on the mounting seat 1, and then lock the fixing plate 14 by inserting a connecting piece such as a pin or bolt, so that the output shaft 7 cannot rotate and then the grass trimmer head can be removed.

[0041] The rotating disk 15 is rotatably connected to the fixed disk 14. Specifically, the fixed disk 14 is provided with a protrusion 11, and the protrusion 11 is provided with an annular groove 22. A card edge 23 is provided on the edge of the rotating disk 15, and the card edge 23 is elastically deformed and snapped into the annular groove 22. The mowing disk 2 is provided with an insertion cavity 8 for inserting the protrusion 11. The protrusion 11 is inserted into the insertion cavity 8 of the mowing disk 2, and the rotating disk 15 is abutted against the mowing disk 2, eliminating the gap between the rotating disk 15 and the mowing disk 2.

[0042] A lower edge 16 is provided on the edge of the rotating disk 15 , enclosing the mounting seat 1 within the rotating disk 15 .

[0043] like Figure 8 As shown, the mowing disc 2 is provided with a blade 4, which is connected to the mowing disc 2 in a gourd-shaped connection manner. The blade 4 is easy to disassemble, reduces wear, and is not easy to fall off.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0045] The above is a detailed introduction to the mower head with anti-entanglement function provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A mower head with an anti-entanglement function, comprising a mounting base, an output shaft rotatably mounted in the mounting base, a mowing disc sleeved on the output shaft, and a stopper mounted on the output shaft to limit separation of the mounting base and the mowing disc, characterized in that: A dustproof baffle is provided between the mounting seat and the mowing disc. The dustproof baffle includes a fixed disc and a rotating disc. The fixed disc is sleeved on the output shaft. The output shaft can drive the fixed disc and the mowing disc to rotate. The rotating disc is rotatably connected to the fixed disc. The rotating disc is covered outside the mounting seat and is close to the mowing disc.

2. The mower head with anti-winding function according to claim 1, characterized in that: The fixed disk is provided with an annular clamping groove, and the rotating disk is provided with a clamping edge which can be elastically deformed and can be clamped into the annular clamping groove.

3. The mower head with anti-winding function according to claim 2, characterized in that: The fixing disc is provided with a protrusion, and the mowing disc is provided with an inserting cavity for the protrusion to be inserted.

4. The mower head with anti-winding function according to claim 1, characterized in that: The limiting member is a nut or a retaining spring.

5. The mower head with anti-winding function according to claim 1, characterized in that: The output shaft and the mowing disc, and the output shaft and the fixed disc are matched through a spline structure.

6. The mower head with anti-winding function according to claim 5, characterized in that: An inclined surface is provided in the spline keyway on the output shaft that matches the fixed disk to limit the installation depth of the fixed disk on the output shaft.

7. The mower head with anti-winding function according to claim 6, characterized in that: The fixed disk is provided with an inner ring convex edge, and the spline structure for the fixed disk to cooperate with the output shaft is arranged on the inner ring convex edge.

8. The mower head with anti-winding function according to claim 7, characterized in that: The mounting seat is provided with a mounting cavity for mounting the output shaft, and the inner ring convex edge is located in the mounting cavity.

9. The mower head with anti-winding function according to claim 8, characterized in that: The fixing plate is provided with an outer ring convex edge located at the periphery of the inner ring convex edge, and the mounting seat is provided with an annular groove located at the periphery of the mounting cavity, and the outer ring convex edge is inserted into the annular groove.

10. The mower head with anti-winding function according to claim 9, characterized in that: The mounting seat is provided with a through hole, which is connected to the annular groove, and the outer ring convex edge is provided with a positioning hole that can be aligned with the through hole.

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