Novel cutter of mower

Abstract

A novel cutter of a mower comprises a connecting rod, a support fixedly connected with the connecting rod and a cover box fixedly mounted on the lower portion of the support, a lead screw is connected into the support, a mounting plate is connected to the outer vertical face of the lead screw, an easily-detached nut is connected to the lower portion of the lead screw in a meshed mode, and a cutter head is arranged between the mounting plate and the easily-detached nut. An easy-to-disassemble assembly matched with the cutterhead and the mounting plate is arranged on the easy-to-disassemble nut; by arranging the easy-to-disassemble assembly, manual disassembly can be achieved without tools such as a wrench, meanwhile, the effect of fixing the cutter is more stable than that of adopting a common bolt, loosening is avoided, and use safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mower equipment, more specifically to a new type of cutter for a lawn mower. Background Art

[0002] A lawn mower, also known as a weed cutter, lawn mower, or lawn trimmer, is a mechanical tool used to trim grass and vegetation. It consists of a cutterhead, engine, wheels, a running mechanism, blades, armrests, and controls. Mounted mowers are a key category, with either type being side-mounted or carried on the back. Side-mounted mowers are lighter, more durable, and more efficient.

[0003] The main structure of a lawn mower that cuts grass is the cutter disc. After work, grass juice, water, mud, etc. will adhere to the cutter disc. If it is not cleaned, it will easily cause the cutter disc to rust. In actual work, clean water is often used for rinsing, but the cleaning effect is general. If you want to clean it thoroughly, you have to disassemble the cutter disc, which requires tools and is not convenient to use. Utility Model Content

[0004] One advantage of the present invention is that it provides a new type of cutter for a lawn mower. By providing an easy-to-disassemble assembly, the cutter can be manually disassembled without using tools such as wrenches. At the same time, the effect of fixing the cutter is more stable than using ordinary bolts and will not loosen, thereby ensuring safe use.

[0005] In order to achieve at least one of the above advantages of the present invention, the present invention provides a new type of tool for a lawn mower, including a connecting rod, a support fixedly connected to the connecting rod, and a cover box fixedly installed at the bottom of the support. A screw rod is connected to the inside of the support, a mounting plate is connected to the outer surface of the screw rod, and an easy-to-remove nut is connected to the lower part of the screw rod in an engaged manner. A cutter disc is arranged between the mounting plate and the easy-to-remove nut, and an easy-to-remove component that cooperates with the cutter disc and the mounting plate is provided on the easy-to-remove nut.

[0006] According to one embodiment of the present invention, the easily removable component includes a limiting groove arranged on the lower surface of the mounting plate, a limiting hole extending vertically through the cutter disc, and a limiting column arranged on the easily removable nut. The limiting groove, the limiting hole, and the limiting column cooperate with each other and are connected by interference fit.

[0007] According to one embodiment of the present invention, a mounting hole extending vertically through the easily removable nut is provided, a limiting post is provided in the mounting hole in a manner that allows it to move up and down, a protrusion is connected to the lower portion of the limiting post, and a lifting rod is connected to the lower portion of the protrusion;

[0008] The diameter of the lifting rod is the same as that of the limiting column, and the diameter of the protruding portion is larger than that of the limiting column;

[0009] The upper and lower ends of the mounting hole are respectively provided with through holes with a diameter smaller than that of the mounting hole. The limiting column passes through the upper through hole, and the lifting rod passes through the lower through hole.

[0010] According to an embodiment of the present invention, a lifting ring is provided at the end of the lifting rod, and the diameter of the lifting ring is larger than the diameter of the through hole.

[0011] According to one embodiment of the present invention, the protrusion is in close contact with the connecting hole to generate a static friction force sufficient to resist the gravity it is subjected to. When the lifting rod is pulled, the protrusion moves up and down in the mounting hole. When the lifting rod is not pulled, the protrusion stays in its position.

[0012] According to one embodiment of the present invention, a positioning column is provided at the lower part of the mounting plate, and a positioning hole adapted to the positioning column is provided on the cutter disc. When the positioning column is coupled with the positioning hole, the limiting groove, the limiting hole and the limiting column are located in a coaxial position.

[0013] According to one embodiment of the present invention, a second positioning mark is provided on the cutter disc, and a first positioning mark is provided on the easily removable nut. When the positions of the first positioning mark and the second positioning mark correspond to each other, the limiting groove, the limiting hole and the limiting column are located in a coaxial position.

[0014] According to an embodiment of the present invention, a groove is provided on the easily removable nut, a wrench is fixedly provided in the groove, and the lower end of the wrench protrudes from the lower surface of the easily removable nut.

[0015] According to an embodiment of the present invention, a thread hole is provided in the middle portion of the easily removable nut and is engaged with the threaded rod.

[0016] According to an embodiment of the present invention, a connecting hole is provided at the center of the cutter disc, and the screw rod passes through the connecting hole and engages with the threaded hole of the easily detachable nut to fix the cutter disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded view of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cutter head structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the easily dismantled nut of the utility model;

[0020] In the accompanying drawings: 1. connecting rod, 2. support, 3. cover box, 4. positioning column, 5. mounting plate, 6. limiting groove, 7. screw rod, 8. cutter disc, 9. positioning hole, 10. limiting hole, 11. connecting hole, 12. thread hole, 13. easy-to-remove nut, 14. limiting column, 15. protrusion, 16. mounting hole, 17. lifting rod, 18. lifting ring, 19. wrench, 20. groove, 21. first positioning mark, 22. second positioning mark. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following will be combined with the appendix of the present invention. Figure 1 ~Attached Figure 3 , the utility model is described in more detail.

[0022] The following description is intended to disclose the present invention and enable those skilled in the art to implement the present invention. The preferred embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0023] Those skilled in the art should understand that, in the disclosure of the specification, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which 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 orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0024] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0025] The utility model provides a new type of cutter for a lawn mower, comprising a connecting rod 1, a support 2 fixedly connected to the connecting rod 1, a cover box 3 fixedly mounted on the lower part of the support 2, a screw rod 7 connected to the inside of the support 2, a mounting plate 5 connected to the outer facade of the screw rod 7, an easily removable nut 13 connected to the lower part of the screw rod 7 in an engaged manner, a cutter disc 8 is provided between the mounting plate 5 and the easily removable nut 13, and an easily removable component that cooperates with the cutter disc 8 and the mounting plate 5 is provided on the easily removable nut 13; the easily removable component comprises a limiting groove 6 provided on the lower surface of the mounting plate 5, a limiting hole 10 that passes through the cutter disc 8 from top to bottom, and a hole 13 provided on the easily removable nut 13. The limiting column 14 on the upper, limiting groove 6, limiting hole 10 and limiting column 14 cooperate with each other and are connected by interference fit; a mounting hole 16 that passes through the upper and lower parts is provided on the easily removable nut 13, and the limiting column 14 is arranged in the mounting hole 16 in a manner that can be moved up and down, and the lower part of the limiting column 14 is connected with a protrusion 15, and the lower part of the protrusion 15 is connected with a lifting rod 17; the diameter of the lifting rod 17 is the same as the diameter of the limiting column 14, and the diameter of the protrusion 15 is larger than the diameter of the limiting column 14; the upper and lower ends of the mounting hole 16 are respectively provided with a through hole with a diameter smaller than the diameter of the mounting hole 16, the limiting column 14 passes through the through hole above, and the lifting rod 1 7 passes through the through hole below; a lifting ring 18 is provided at the end of the lifting rod 17, and the diameter of the lifting ring 18 is larger than the diameter of the through hole; the protrusion 15 is in close contact with the connecting hole 11 to generate a static friction force sufficient to resist the gravity it is subjected to. When the lifting rod 17 is pulled, the protrusion 15 moves up and down in the mounting hole 16. When the lifting rod 17 is not pulled, the protrusion 15 stays in its position; a positioning column 4 is provided at the lower part of the mounting plate 5, and a positioning hole 9 adapted to the positioning column 4 is provided on the cutter disc 8. When the positioning column 4 is coupled with the positioning hole 9, the limiting groove 6, the limiting hole 10 and the limiting column 14 are in a coaxial position; A second positioning mark 22 is provided, and a first positioning mark 21 is provided on the easily removable nut 13. When the positions of the first positioning mark 21 and the second positioning mark 22 correspond, the limiting groove 6, the limiting hole 10 and the limiting column 14 are located in a coaxial position; a groove 20 is provided on the easily removable nut 13, and a wrench 19 is fixedly provided in the groove 20, and the lower end of the wrench 19 protrudes from the lower surface of the easily removable nut 13; a wire hole 12 connected to the screw rod 7 in an engaging manner is provided in the middle of the easily removable nut 13; a connecting hole 11 is provided at the center of the cutter disc 8, and the screw rod 7 passes through the connecting hole 11 and engages with the wire hole 12 of the easily removable nut 13 to fix the cutter disc 8.

[0026] The first embodiment of the present utility model is as follows:

[0027] A new type of tool for a lawn mower includes a connecting rod 1, a support 2 fixedly connected to the connecting rod 1, and a cover box 3 fixedly installed on the lower part of the support 2. The connecting rod 1 is connected to a side-hanging or back-hanging drive mechanism to drive a cutter disc 8 to rotate. A screw rod 7 is connected to the inside of the support 2, and a mounting plate 5 is connected to the outer surface of the screw rod 7. The lower part of the screw rod 7 is connected to an easily removable nut 13 in an engaged manner. A cutter disc 8 is arranged between the mounting plate 5 and the easily removable nut 13, and an easily removable component that cooperates with the cutter disc 8 and the mounting plate 5 is provided on the easily removable nut 13.

[0028] The easily removable component includes a limiting groove 6 arranged on the lower surface of the mounting plate 5, a limiting hole 10 extending from top to bottom arranged on the cutter disc 8, and a limiting column 14 arranged on the easily removable nut 13. The limiting groove 6, the limiting hole 10 and the limiting column 14 cooperate with each other and are connected by interference fit.

[0029] A thread hole 12 is provided in the middle of the easily removable nut 13 and is engaged with the screw rod 7. A connecting hole 11 is provided at the center of the cutter disc 8. The screw rod 7 passes through the connecting hole 11 and is engaged with the thread hole 12 of the easily removable nut 13 to fix the cutter disc 8. The cutter disc 8 can be fixed by tightening the easily removable nut 13.

[0030] The easily removable nut 13 is provided with a mounting hole 16 which passes through the upper and lower parts. The limiting column 14 is arranged in the mounting hole 16 in a manner that it can move up and down. The lower part of the limiting column 14 is connected with a protrusion 15, and the lower part of the protrusion 15 is connected with a lifting rod 17. The diameter of the lifting rod 17 is the same as that of the limiting column 14. The diameter of the protrusion 15 is larger than that of the limiting column 14. The protrusion 15 is in close contact with the connecting hole 11 to generate a static friction force sufficient to resist the gravity it is subjected to. When the lifting rod 17 is pulled, the protrusion 15 is in the mounting hole 16 moves up and down, and when the lifting rod 17 is not pulled, the protrusion 15 stays in its position. The protrusion 15 can not only limit the moving range of the limiting column 14 to prevent it from detaching, but also can adapt to the side of the mounting hole 16 to play a fixing role. When the limiting column 14 is inserted into the limiting groove 6, it will not detach due to gravity. The upper and lower ends of the mounting hole 16 are respectively provided with through holes with a diameter smaller than the diameter of the mounting hole 16. The limiting column 14 passes through the through hole above, and the lifting rod 17 passes through the through hole below.

[0031] A lifting ring 18 is provided at the end of the lifting rod 17 . The diameter of the lifting ring 18 is larger than the diameter of the through hole. It can limit the position and is also convenient for holding the lifting ring 18 by hand to move the limiting column 14 .

[0032] A positioning column 4 is provided at the lower part of the mounting plate 5, and a positioning hole 9 adapted to the positioning column 4 is provided on the cutter disc 8. When the positioning column 4 is coupled with the positioning hole 9, the limiting groove 6, the limiting hole 10 and the limiting column 14 are located in a coaxial position. When the cutter disc 8 is installed, the positioning column 4 is placed in the positioning hole 9 to play a positioning role.

[0033] A second positioning mark 22 is provided on the cutter disc 8, and a first positioning mark 21 is provided on the easily removable nut 13. During the process of tightening the easily removable nut 13, the first positioning mark 21 and the second positioning mark 22 will rotate relative to each other until the easily removable nut 13 is tightened. At this time, the easily removable nut 13 is fine-tuned so that the first positioning mark 21 and the second positioning mark 22 are relative to each other. At this time, the limiting groove 6, the limiting hole 10 and the limiting column 14 are in a coaxial position, and the limiting column 14 can be inserted into the limiting hole 10 and the limiting groove 6 to complete the installation.

[0034] A groove 20 is provided on the easily removable nut 13, and a wrench 19 is fixedly provided in the groove 20. The lower end of the wrench 19 protrudes from the lower surface of the easily removable nut 13, which is convenient for people to turn it by hand, and is convenient and practical.

[0035] When in use, first align the positioning hole 9 with the positioning column 4, place the cutter disc 8 on the mounting plate 5, then pull the lifting ring 18 to retract the limiting column 14 completely into the mounting hole 16, and then tighten the easily removable nut 13 onto the screw rod 7 until it is tightened. At this time, fine-tune the easily removable nut 13 so that the first positioning mark 21 and the second positioning mark 22 are opposite, and then press the lifting ring 18 downward to allow the limiting column 14 to pass through the limiting hole 10 and insert into the limiting groove 6 to complete the installation.

[0036] To disassemble, first pull the lifting ring 18 to make the limiting column 14 pass through the limiting groove 6 and the limiting hole 10, and then unscrew the easily dismantled nut 13.

[0037] It should be noted that the terms "first, second and third" in the present invention are only used for descriptive purposes and do not indicate any order. They cannot be understood as indicating or implying relative importance. These terms can be interpreted as names.

[0038] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles herein.

Claims

1. A new type of cutter for a lawn mower, comprising a connecting rod, a support fixedly connected to the connecting rod, and a cover box fixedly mounted below the support, characterized in that: A screw rod is connected to the inside of the support, a mounting plate is connected to the outer surface of the screw rod, the lower part of the screw rod is connected to an easily removable nut in an engaged manner, a cutter disc is provided between the mounting plate and the easily removable nut, and an easily removable component that cooperates with the cutter disc and the mounting plate is provided on the easily removable nut.

2. The new blade for a lawn mower according to claim 1, characterized in that: The easily detachable component includes a limiting groove arranged on the lower surface of the mounting plate, a limiting hole extending vertically through the cutter disc, and a limiting column arranged on the easily detachable nut. The limiting groove, limiting hole, and limiting column cooperate with each other and are connected by interference fit.

3. The new blade for a lawn mower according to claim 2, characterized in that: The easily removable nut is provided with a mounting hole extending vertically therethrough, the limiting column is arranged in the mounting hole in a manner that it can move up and down, the lower part of the limiting column is connected to a protrusion, and the lower part of the protrusion is connected to a lifting rod; The diameter of the lifting rod is the same as that of the limiting column, and the diameter of the protrusion is larger than that of the limiting column; The upper and lower ends of the mounting hole are respectively provided with through holes with a diameter smaller than that of the mounting hole. The limiting column passes through the upper through hole, and the lifting rod passes through the lower through hole.

4. The new blade for a lawn mower according to claim 3, characterized in that: A lifting ring is provided at the end of the lifting rod, and the diameter of the lifting ring is larger than the diameter of the through hole.

5. The new blade for a lawn mower according to claim 3, characterized in that: The protrusion is in close contact with the connecting hole to generate a static friction force sufficient to resist the gravity on it. When the lifting rod is pulled, the protrusion moves up and down in the installation hole. When the lifting rod is not pulled, the protrusion stays at its position.

6. The new blade for a lawn mower according to claim 2, characterized in that: A positioning column is provided at the lower part of the mounting plate, and a positioning hole adapted to the positioning column is provided on the cutter disc. When the positioning column is coupled with the positioning hole, the limiting groove, the limiting hole and the limiting column are located in a coaxial position.

7. The new blade for a lawn mower according to claim 2, characterized in that: A second positioning mark is provided on the cutter disc, and a first positioning mark is provided on the easily removable nut. When the positions of the first positioning mark and the second positioning mark correspond to each other, the limiting groove, the limiting hole and the limiting column are located in a coaxial position.

8. The new blade for a lawn mower according to claim 1, characterized in that: The easily dismantled nut is provided with a groove, a wrench is fixedly provided in the groove, and the lower end of the wrench protrudes from the lower surface of the easily dismantled nut.

9. The new blade for a lawn mower according to claim 1, characterized in that: The middle part of the easily detachable nut is provided with a threaded hole which is connected with the screw rod in a meshing manner.

10. The new blade for a lawn mower according to claim 9, characterized in that: A connecting hole is provided at the center of the cutter disc, and the screw rod passes through the connecting hole and engages with the screw hole of the easily detachable nut to fix the cutter disc.

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