Grass trimmer with protective cover convenient to disassemble and assemble

Abstract

The utility model provides a grass trimmer with a protective cover convenient to disassemble and assemble. The grass trimmer comprises a grass trimming main machine, a handle assembly and the protective cover. The lower end of the handle assembly is rotationally connected with the rear side of a shell in the grass mowing main machine, the protective cover is fixed to the rear side of the shell, and the protective cover partially surrounds the outer side of a grass mowing head on the grass mowing main machine; an open slot is formed in the middle of the front side of the protective cover and is horizontally embedded with the rear part of the shell; a limiting rib is horizontally arranged on the inner wall of the opening groove, a limiting groove matched with the limiting rib is formed in the rear side of the shell, and the limiting rib is horizontally inserted into the limiting groove; a counterbore is formed in the rear side of the middle of the open groove. The protective cover and the shell are fastened through a screw which is arranged in the counterbore in a penetrating mode and is in threaded connection with the shell. The grass trimmer has the advantages that the protective cover and the shell of the grass trimmer main machine are convenient to fix, and the protective cover is convenient to replace.

Description

Technical Field

[0001] This utility model relates to the field of grass trimmer technology, and more specifically, to a grass trimmer with an easy-to-install and remove protective cover. Background Technology

[0002] A lawn mower is a garden tool used to trim lawns. Currently, lawn mowers on the market mainly consist of a mowing main unit, a handle assembly, and a protective cover. The lower end of the handle assembly is rotatably connected to the rear side of the housing in the mowing main unit. The protective cover is fixed to the rear side of the housing and partially surrounds the outside of the mowing head on the mowing main unit. In addition, the protective cover is fixed to the side wall of the housing by multiple screws spaced around the circumference of the protective cover. In the above-mentioned existing lawn mower structure, since the protective cover needs to be fixed to the housing by multiple screws, there are disadvantages such as inconvenience in fixing the protective cover to the housing and inconvenience in replacing the protective cover. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a grass trimmer with easy-to-install and remove protective cover, which has the advantages of easy fixing of the protective cover and the shell of the grass trimmer, and easy replacement of the protective cover.

[0004] This utility model provides a grass trimmer with an easy-to-install and remove protective cover, including a grass trimmer main unit, a handle assembly, and a protective cover; the lower end of the handle assembly is rotatably connected to the rear side of the housing in the grass trimmer main unit, the protective cover is fixed to the rear side of the housing, and the protective cover partially surrounds the outer side of the grass trimmer head on the grass trimmer main unit; an opening groove is provided in the middle of the front side of the protective cover, and the opening groove is horizontally fitted with the rear side of the housing; a limiting rib is horizontally provided on the inner wall of the opening groove, and a limiting groove adapted to the limiting rib is provided on the rear side of the housing, and the limiting rib is horizontally inserted into the limiting groove; a countersunk hole is provided on the rear side located in the middle of the opening groove, and the protective cover and the housing are fastened by screws that pass through the countersunk hole and are threaded to the housing.

[0005] By adopting the above structure, the protective cover can be horizontally inserted and positioned with the housing, and the protective cover can be fixed to the housing with only one screw. This has the advantages of convenient fixing of the protective cover to the housing of the grass trimmer and convenient replacement of the protective cover.

[0006] In one possible implementation, the front end of the protective cover is provided with two limiting blocks, which are symmetrically arranged on both sides of the opening slot. The housing is provided with limiting holes that are adapted to the limiting blocks, and each limiting block is horizontally inserted into the limiting hole on the corresponding side. By adopting this structure, after each limiting block is engaged with the limiting hole on the corresponding position, the protective cover and the housing located on both sides of the opening slot can be further limited, thereby further improving the firmness and reliability of the protective cover and the housing after assembly.

[0007] In one possible implementation, each limiting plug has a chamfered surface on its outer wall at the front end. The chamfered surface is used to guide the limiting plug to be inserted into the limiting plug. With this structure, when the limiting plug is inserted into the limiting plug, the chamfered surface can guide the limiting plug to be inserted into the limiting plug by cooperating with the wall of the limiting plug, thus making it easier for the limiting plug to be inserted into the limiting plug.

[0008] In one possible implementation, a positioning notch is provided in the middle of the opening groove, and a protrusion adapted to the positioning notch is provided on the outer wall of the housing. The protrusion is horizontally fitted into the positioning notch. With this structure, after the protective cover and the housing are horizontally inserted, the protrusion on the housing can fit into the positioning notch on the protective cover, thereby further limiting the position of the protective cover and the housing, that is, further preventing the protective cover from swaying left and right relative to the housing.

[0009] In one possible implementation, two symmetrically arranged reinforcing ribs are provided on the outer top of the protective cover, with each rib extending from front to back. By adopting this structure, the deformation resistance of the protective cover can be improved, that is, the structural strength of the protective cover can be improved.

[0010] In one possible implementation, a cutting blade is vertically fixed at the top edge of the inner side of the protective cover. The cutting blade is used to cut off excess trimming rope in the trimming head. With this structure, after the trimming rope extending out of the trimming head wears down and a section of trimming rope is pulled out of the trimming head, the excess trimming rope can be easily cut off by the cutting blade. This prevents interference between the trimming rope and the protective cover when the trimming machine drives the trimming head to rotate. In other words, the trimming rope extending out of the trimming head can be easily cut to a suitable length by the cutting blade.

[0011] In one possible implementation, the upper end of the cutting blade is provided with a horizontally bent section, and the inner top of the protective cover is provided with a groove. The bent section is vertically embedded in the groove and is fastened to the protective cover by screws. With this structure, the cutting blade can be reliably fixed to the inner top of the protective cover. Furthermore, with the cooperation of the bent section and the groove, when the cutting blade cuts the excess straw rope, it can prevent the cutting blade from rotating relative to the protective cover, thereby improving the reliability of the cutting blade in cutting the straw rope. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2This is a three-dimensional structural diagram of the present invention after the handle assembly has been removed;

[0014] Figure 3 This is a partial exploded three-dimensional structural diagram of the present invention after the handle assembly has been removed. Detailed Implementation

[0015] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0016] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0017] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0018] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] See Figure 1-3 As shown in the figure, this application discloses a lawn mower with easy-to-install and remove protective cover, including a lawn mower main unit 1, a handle assembly 2, and a protective cover 3; the lower end of the handle assembly 2 is rotatably connected to the rear side of the housing 11 in the lawn mower main unit 1, the protective cover 3 is fixed to the rear side of the housing 11, and the protective cover 3 partially surrounds the outer side of the lawn mower head 12 on the lawn mower main unit 1; an opening groove 31 is provided in the middle of the front side of the protective cover 3, and the opening groove 31 is horizontally fitted with the rear part of the housing 11; a limiting rib 32 is horizontally provided on the inner wall of the opening groove 31, and a limiting groove 111 adapted to the limiting rib 32 is provided on the rear side of the housing 11, and the limiting rib 32 is horizontally inserted into the limiting groove 111; a countersunk hole 33 is provided on the rear side of the middle part of the opening groove 31, and the protective cover 3 and the housing 11 are fastened by screws that pass through the countersunk hole 33 and are threadedly connected to the housing 11.

[0020] The front end of the protective cover 3 is provided with two limiting blocks 34, which are symmetrically arranged on both sides of the opening slot 31. The housing 11 is provided with limiting holes 112 that are adapted to the limiting blocks 34. Each limiting block 34 is horizontally inserted into the limiting hole 112 on the corresponding side. By adopting this structure, after each limiting block is engaged with the limiting hole on the corresponding position, the protective cover and housing located on both sides of the opening slot can be further limited, thereby further improving the firmness and reliability of the protective cover and housing after assembly.

[0021] Each limiting plug 34 has a chamfered surface 341 on its outer wall at the front end. The chamfered surface 341 is used to cooperate with the wall of the limiting plug hole 112 for guidance so that the limiting plug 34 can be inserted into the limiting plug hole 112. With this structure, when the limiting plug is inserted into the limiting plug hole, the chamfered surface can cooperate with the wall of the limiting plug hole for guidance so that the limiting plug can be inserted into the limiting plug hole, thus making the limiting plug more smoothly inserted into the limiting plug hole.

[0022] A positioning notch 35 is provided in the middle of the opening groove 31, and a protrusion 113 adapted to the positioning notch 35 is provided on the outer wall of the housing 11. The protrusion 113 is horizontally fitted in the positioning notch 35. With this structure, after the protective cover and the housing are horizontally inserted, the protrusion on the housing can be fitted with the positioning notch on the protective cover, thereby further limiting the position of the protective cover and the housing, that is, further preventing the protective cover from swaying left and right relative to the housing.

[0023] The outer top of the protective cover 3 is provided with two reinforcing ribs 36 arranged symmetrically from left to right, and each reinforcing rib 36 extends from front to back; by adopting this structure, the deformation resistance of the protective cover can be improved, that is, the structural strength of the protective cover can be improved.

[0024] A cutting blade 4 is vertically fixed at the top edge of the inner top of the protective cover 3. The cutting blade 4 is used to cut off the excess trimming rope 121 in the trimming head 12. With this structure, after the trimming rope protruding from the trimming head wears down and a section of trimming rope is pulled out from the trimming head, the excess trimming rope can be easily cut off by the cutting blade. This prevents interference between the trimming rope and the protective cover when the trimming host drives the trimming head to rotate. In other words, the trimming rope protruding from the trimming head can be easily cut to a suitable length by the cutting blade. In addition, the structure of the trimming head that can store the trimming rope is the existing technology on the market, so it will not be described in detail here.

[0025] The upper end of the cutting blade 4 is provided with a horizontally bent section 41, and the inner top of the protective cover 3 is provided with a groove 37. The bent section 41 is vertically embedded in the groove 37 and is fastened to the protective cover 3 by screws. With this structure, the cutting blade can be reliably fixed on the inner top of the protective cover. With the cooperation of the bent section and the groove, when the cutting blade cuts the excess straw rope, it can avoid the cutting blade from rotating relative to the protective cover, which can improve the reliability of the cutting blade in cutting the straw rope.

[0026] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A grass trimmer with an easily detachable protective cover, comprising a grass trimmer main unit (1), a handle assembly (2), and a protective cover (3); the lower end of the handle assembly (2) is rotatably connected to the rear side of the housing (11) in the grass trimmer main unit (1), the protective cover (3) is fixed to the rear side of the housing (11), and the protective cover (3) partially surrounds the outer side of the grass trimmer head (12) on the grass trimmer main unit (1); characterized in that: An opening groove (31) is provided in the middle of the front side of the protective cover (3), and the opening groove (31) is horizontally fitted with the rear part of the housing (11); a limiting rib (32) is horizontally provided on the inner wall of the opening groove (31), and a limiting groove (111) adapted to the limiting rib (32) is provided on the rear side of the housing (11), and the limiting rib (32) is horizontally inserted into the limiting groove (111); a countersunk hole (33) is provided on the rear side of the middle part of the opening groove (31), and the protective cover (3) and the housing (11) are fastened by screws that pass through the countersunk hole (33) and are threadedly connected to the housing (11).

2. The lawn mower with easily detachable protective cover according to claim 1, characterized in that: The front end of the protective cover (3) is provided with two limiting plugs (34). The two limiting plugs (34) are symmetrically arranged on both sides of the opening slot (31). The housing (11) is provided with limiting holes (112) that are adapted to the limiting plugs (34). Each limiting plug (34) is horizontally inserted into the limiting hole (112) on the corresponding side.

3. The lawn mower with easily detachable protective cover according to claim 2, characterized in that: Each of the limiting plugs (34) has a chamfered surface (341) on the outer wall of its front end. The chamfered surface (341) is used to cooperate with the wall of the limiting hole (112) for guidance so that the limiting plug (34) can be inserted into the limiting hole (112).

4. The lawn mower with easily detachable protective cover according to any one of claims 1-3, characterized in that: The opening groove (31) is provided with a positioning notch (35) in the middle, and the outer wall of the housing (11) is provided with a protrusion (113) that is adapted to the positioning notch (35), and the protrusion (113) is horizontally fitted into the positioning notch (35).

5. The lawn mower with easily detachable protective cover according to claim 1, characterized in that: The outer top of the protective cover (3) is provided with two reinforcing ribs (36) arranged symmetrically on the left and right, and each reinforcing rib (36) extends from front to back.

6. The lawn mower with easily detachable protective cover according to claim 1, characterized in that: A cutting blade (4) is vertically fixed at the top edge of the inner top of the protective cover (3). The cutting blade (4) is used to cut off excess straw rope (121) in the straw trimmer (12).

7. The lawn mower with easily detachable protective cover according to claim 6, characterized in that: The upper end of the cutting blade (4) is provided with a horizontally bent section (41), and the inner top of the protective cover (3) is provided with a groove (37). The bent section (41) is vertically embedded in the groove (37), and the bent section (41) is fastened to the protective cover (3) by screws.

Images