Multifunctional grass trimmer

Abstract

The utility model provides a multifunctional grass trimmer. The multifunctional grass trimmer comprises a grass trimming main machine, a handle assembly and a 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; the multifunctional grass trimmer further comprises a support and a guide wheel. The rear end of the support is connected to the outer wall of the shell, and the support and the handle assembly are arranged in a front-back corresponding mode. The guide wheel is horizontally and rotatably connected to the front end of the bracket; according to the grass trimmer, the wall surface can be effectively prevented from being abraded, and the smoothness of the grass trimmer main machine moving relative to the wall surface can be improved.

Description

Technical Field

[0001] This utility model relates to the field of grass cutter technology, and more specifically, to a multi-functional grass cutter. Background Technology

[0002] A lawnmower is a garden tool used for trimming lawns. Currently, Chinese Patent Publication No. CN104969716A discloses a lawnmower. When trimming lawns at the base of a wall, to prevent the rotating nylon rope in the working head from hitting and damaging the wall, a trimming wire is installed at the front end of the working head. This allows the trimming wire to rest against the wall, limiting the working head's movement and overcoming the defect of the nylon rope hitting the wall. However, in this lawnmower structure, relying on the trimming wire to rest against the wall and move the working head along the wall results in friction between the trimming wire and the wall, causing wear and tear on both the wall and the trimming wire. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a multi-functional lawn mower that can effectively avoid wear and tear on the wall surface and improve the smoothness of the lawn mower moving relative to the wall surface.

[0004] This utility model provides a multi-functional lawn mower, including a lawn mower 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 lawn mower main unit, the protective cover is fixed to the rear side of the housing, and the protective cover partially surrounds the outside of the lawn mower head on the lawn mower main unit; the multi-functional lawn mower also includes a bracket and guide wheels; the rear end of the bracket is connected to the outer wall of the housing, and the bracket and the handle assembly are arranged in a front-to-back correspondence; the guide wheels are rotatably connected to the front end of the bracket.

[0005] By adopting the above structure, when the lawn mower is trimming the lawn located at the base of the wall, the guide wheel can abut against the wall and roll along the wall, thereby effectively avoiding wear and tear on the wall and improving the smoothness of the lawn mower moving relative to the wall.

[0006] In one possible implementation, a support wheel is rotatably connected to the outer top of one side of the protective cover. When the multi-functional lawn mower is in trimming mode, the guide wheel and the support wheel are simultaneously supported on the ground and can roll along the ground. With this structure, when the multi-functional lawn mower is in trimming mode, the guide wheel and the support wheel can simultaneously support on the ground and roll along the ground, thereby improving the stability and reliability of the multi-functional lawn mower's movement relative to the ground when it is in trimming mode and moving horizontally relative to the ground. Furthermore, when the lawn mower is in trimming mode, the main mower can rotate relative to the handle in the handle assembly by means of the connecting rod in the handle assembly. In addition, the structure that the connecting rod in the handle assembly can rotate relative to the handle in the handle assembly is existing technology on the market and will not be described in detail here. Moreover, when the lawn mower is in normal lawn mowing mode, the axis of the mowing head in the main mower is in a vertical state, and when the lawn mower is in trimming mode, the axis of the mowing head in the main mower is in a horizontal state.

[0007] In one possible implementation, a first pin is provided through the support wheel and is coaxially arranged with the support wheel. The lower end of the first pin is fixed to the protective cover, and the support wheel is rotatably connected to the first pin. With this structure, under the action of the first pin, the support wheel can be reliably horizontally rotatably connected to the protective cover.

[0008] In one possible implementation, the rear end of the bracket is provided with two symmetrical connecting arms. Each connecting arm has a boss on the inner side of its rear end. The outer walls of the left and right sides of the housing are provided with grooves. The two connecting arms extend to the left and right sides of the housing respectively, and each boss is embedded in the groove on the corresponding side. Each connecting arm is rotatably limited with the housing. With this structure, the bosses on the two connecting arms are engaged with the grooves on the housing. After each connecting arm is rotatably limited with the housing, the bracket can be reliably connected to the housing and rotatably limited, thus enabling the bracket to reliably support the guide wheel.

[0009] In one possible implementation, at least one limiting block is provided on the outer wall of each boss, and a limiting groove adapted to the limiting block is provided on the side wall of the groove. The limiting block is fitted into the limiting groove at the corresponding position to restrict the rotation of the bracket relative to the housing. By adopting this structure, the rotation of the bracket relative to the housing can be restricted after the limiting block and the limiting groove are fitted together, which has the advantage of simple rotation limiting structure of connecting arm and housing.

[0010] In one possible implementation, each boss has a plurality of limiting blocks spaced apart in the circumferential direction around the boss on its outer wall. The side wall of the groove has a limiting groove corresponding to a plurality of limiting blocks located on the same side of the housing. Each limiting block is fitted into the limiting groove at the corresponding position to restrict the rotation of the bracket relative to the housing. By adopting this structure, after each limiting block is fitted into the limiting groove at the corresponding position, the rotation of the bracket relative to the housing can be further restricted, which can further improve the reliability of the rotation limiting of the bracket and the housing.

[0011] In one possible implementation, each connecting arm has a countersunk hole at its rear end, and the bracket and housing are fastened together by screws that pass through the countersunk holes and are threaded onto the housing. With this structure, each connecting arm can be more reliably fastened to the housing, thereby further improving the reliability of the rotation limit of the bracket and housing.

[0012] In one possible implementation, a second pin is inserted through the guide wheel and is coaxially arranged with the guide wheel. The upper end of the second pin is fixed to the front end of the bracket, and the guide wheel is rotatably connected to the second pin. With this structure, the guide wheel can be reliably rotatably connected to the front end of the bracket under the action of the second pin. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention in the state of mowing lawn.

[0014] Figure 2 This is a partial three-dimensional structural diagram of the present invention when it is in the trimming and use state;

[0015] Figure 3 This is a partial exploded three-dimensional structural diagram of the present invention after the handle assembly has been removed.

[0016] Figure 4 for Figure 3 A magnified structural diagram of point A in the middle. Detailed Implementation

[0017] 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.

[0018] 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.

[0019] 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.

[0020] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] See Figure 1-4 As shown in the figure, this application discloses a multi-functional lawn mower, 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, and the protective cover 3 is fixed to the rear side of the housing 11, and the protective cover 3 partially surrounds the outside of the lawn mower head 12 on the lawn mower main unit 1; the multi-functional lawn mower also includes a bracket 4 and a guide wheel 5; the rear end of the bracket 4 is connected to the outer wall of the housing 11, and the bracket 4 and the handle assembly 2 are arranged in a front-to-back correspondence; the guide wheel 5 is rotatably connected to the front end of the bracket 4.

[0022] A support wheel 6 is horizontally rotatably connected to the outer top of one side of the protective cover 3. When the multi-functional lawnmower is in trimming mode, the guide wheel 5 and the support wheel 6 are simultaneously supported on the ground and can roll along the ground. With this structure, when the multi-functional lawnmower is in trimming mode, the guide wheel 5 and the support wheel 6 can simultaneously support on the ground and roll along the ground, thereby improving the stability and reliability of the multi-functional lawnmower's movement relative to the ground when it is in trimming mode and moving horizontally relative to the ground. Furthermore, when the lawn mower is in the trimming state, the main mower unit can rotate 90 degrees relative to the handle in the handle assembly by the connecting rod in the handle assembly, so that the lawn mower is in the trimming state; in addition, the structure that the connecting rod in the handle assembly can rotate 90 degrees relative to the handle in the handle assembly is the existing technology on the market, so it will not be described in detail here; furthermore, when the lawn mower is in the normal lawn mowing state, the axis of the mowing head in the main mower unit is in a vertical state, and when the lawn mower is in the trimming state, the axis of the mowing head in the main mower unit is in a horizontal state.

[0023] A first pin 7, coaxially arranged with the support wheel 6, is inserted through the support wheel 6. The lower end of the first pin 7 is fixed to the protective cover 3, and the support wheel 6 is rotatably connected to the first pin 7. With this structure, under the action of the first pin, the support wheel can be reliably horizontally rotatably connected to the protective cover.

[0024] The rear end of the bracket 4 is provided with two symmetrical connecting arms 41. Each connecting arm 41 has a boss 42 on the inner side of its rear end. The outer walls of the left and right sides of the housing 11 are provided with grooves 111. The two connecting arms 41 extend to the left and right sides of the housing 11 respectively, and each boss 42 is embedded in the groove 111 on the corresponding side. Each connecting arm 41 is rotatably limited with the housing 11. With this structure, the bosses on the two connecting arms are engaged with the grooves on the housing. After each connecting arm is rotatably limited with the housing, the bracket can be reliably connected to the housing and rotatably limited, which enables the bracket to reliably support the guide wheel.

[0025] Each boss 42 has at least one limiting block 43 on its outer wall, and the side wall of the groove 111 has a limiting groove 112 that matches the limiting block 43. The limiting block 43 is fitted into the limiting groove 112 at the corresponding position to limit the rotation of the bracket 4 relative to the housing 11. By adopting this structure, the rotation of the bracket relative to the housing can be limited after the limiting block and the limiting groove are fitted together, which has the advantage of simple rotation limiting structure between the connecting arm and the housing.

[0026] Each boss 42 has a number of limiting blocks 43 spaced apart in the circumferential direction around the boss 42 on its outer wall. The side wall of the groove 111 has a limiting groove 112 corresponding to the limiting blocks 43 on the same side of the housing 11. Each limiting block 43 is fitted into the limiting groove 112 at the corresponding position to limit the rotation of the bracket 4 relative to the housing 11. By adopting this structure, after each limiting block is fitted into the limiting groove at the corresponding position, the rotation of the bracket relative to the housing can be further limited, which can further improve the reliability of the rotation limiting of the bracket and the housing.

[0027] Each connecting arm 41 has a horizontally countersunk hole 44 at its rear end. The bracket 4 and the housing 11 are also fastened by screws that pass through the countersunk hole 44 and are threaded to the housing 11. With this structure, each connecting arm can be more reliably fastened to the housing, thereby further improving the reliability of the rotation limit of the bracket and the housing.

[0028] A second pin 8 is inserted through the guide wheel 5 and is coaxially arranged with the guide wheel 5. The upper end of the second pin 8 is fixed to the front end of the bracket 4, and the guide wheel 5 is rotatably connected to the second pin 8. With this structure, the guide wheel can be reliably horizontally rotatably connected to the front end of the bracket under the action of the second pin.

[0029] 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 multi-functional mower, comprising a 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 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 outside of the mower head (12) on the mower main unit (1); characterized in that: The multi-functional lawn mower also includes a bracket (4) and a guide wheel (5); the rear end of the bracket (4) is connected to the outer wall of the housing (11), and the bracket (4) and the handle assembly (2) are arranged in a front-to-back correspondence; the guide wheel (5) is horizontally rotatably connected to the front end of the bracket (4).

2. The multi-functional lawn mower according to claim 1, characterized in that: A support wheel (6) is horizontally rotatably connected to the outer top of one side of the protective cover (3); when the multi-functional lawn mower is in the trimming state, the guide wheel (5) and the support wheel (6) are used to support the ground at the same time and can roll along the ground.

3. The multi-functional lawn mower according to claim 2, characterized in that: A first pin (7) is provided in the support wheel (6) and is coaxially arranged with the support wheel (6). The lower end of the first pin (7) is fixed to the protective cover (3). The support wheel (6) is rotatably connected to the first pin (7).

4. The multi-functional lawn mower according to any one of claims 1-3, characterized in that: The rear end of the bracket (4) is provided with two symmetrical connecting arms (41). Each connecting arm (41) has a boss (42) on the inner side of its rear end. The outer walls of the left and right sides of the housing (11) are provided with grooves (111). The two connecting arms (41) extend to the left and right sides of the housing (11) respectively, and each boss (42) is embedded in the groove (111) on the corresponding side. Each connecting arm (41) is rotated and limited with the housing (11).

5. The multi-functional lawn mower according to claim 4, characterized in that: Each of the bosses (42) has at least one limiting block (43) on its outer wall. The side wall of the groove (111) is provided with a limiting groove (112) that is adapted to the limiting block (43). The limiting block (43) is fitted into the limiting groove (112) at the corresponding position to limit the rotation of the bracket (4) relative to the housing (11).

6. The multi-functional lawn mower according to claim 5, characterized in that: Each of the bosses (42) has a number of limiting blocks (43) spaced apart around the boss (42) in the circumferential direction. The side wall of the groove (111) has a limiting groove (112) corresponding to the limiting blocks (43) located on the same side of the housing (11). Each limiting block (43) is fitted into the limiting groove (112) at the corresponding position to limit the rotation of the bracket (4) relative to the housing (11).

7. The multi-functional lawn mower according to claim 6, characterized in that: Each of the connecting arms (41) has a countersunk hole (44) horizontally provided at its rear end. The bracket (4) and the housing (11) are also fastened by screws that pass through the countersunk hole (44) and are threaded to the housing (11).

8. The multi-functional lawn mower according to any one of claims 1-3, characterized in that: A second pin (8) is provided in the guide wheel (5) and is coaxially arranged with the guide wheel (5). The upper end of the second pin (8) is fixed to the front end of the bracket (4). The guide wheel (5) is rotatably connected to the second pin (8).

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