CN217241451U

CN217241451U - Grass mowing head and grass mowing machine

Info

Publication number: CN217241451U
Application number: CN202120907543.7U
Authority: CN
Inventors: 刘强
Original assignee: Suzhou Dake Investment Consulting Co ltd
Current assignee: Suzhou Dake Investment Consulting Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2022-08-23
Anticipated expiration: 2031-04-29

Abstract

The application provides a grass mowing head which can be driven to rotate around a preset axis and comprises a grass mowing disc and a cover body, wherein the grass mowing disc comprises a power receiving part, a first positioning mechanism and a second positioning mechanism; the power receiving part is configured to receive the driving force transmitted by the cover body; the first positioning mechanism is configured to hold a grass mowing rope; a second positioning mechanism configured to hold the blade in a manner that allows the blade to rotate; the first positioning mechanism is provided with a first positioning groove, a second positioning groove and a third positioning groove, the first positioning groove, the second positioning groove and the third positioning groove are used for limiting the grass beating rope, the first positioning groove and the second positioning groove are arranged at an angle, and the first positioning groove is parallel to the third positioning groove. This application can assemble respectively through first positioning mechanism and second positioning mechanism and beat grass rope and blade to be suitable for the pruning of different plants, be favorable to expanding the application scene of machine of beating grass, the cost is also lower simultaneously.

Description

Grass mowing head and grass mowing machine

Technical Field

The utility model relates to a garden instrument field especially relates to a grass mowing head and grass mowing machine.

Background

A grass trimmer is a garden tool and is mainly used for trimming lawns. A common grass trimmer comprises an operating rod, a motor, a grass trimmer head and other mechanisms. The grass cutting head can select one of a blade and a grass cutting rope as a working head, the blade is suitable for cutting weeds and thin shrubs with high hardness, and the grass cutting rope is suitable for cutting grass with low hardness. When various weeds are present on the lawn, one mowing head cannot perform trimming well, and the preparation of two mowing heads causes cost increase.

Disclosure of Invention

The application provides a can adaptation beat grass rope and beat grass head and machine of beating grass of blade.

Specifically, the application provides a grass mowing head which can be driven to rotate around a preset axis, the grass mowing head comprises a grass mowing disc and a cover body, and the grass mowing disc comprises a power receiving part, a first positioning mechanism and a second positioning mechanism; the power receiving part is configured to receive the driving force transmitted by the cover body; the first positioning mechanism is configured to hold a grass mowing rope; a second positioning mechanism configured to hold the blade in a manner that allows the blade to rotate; the first positioning mechanism is provided with a first positioning groove, a second positioning groove and a third positioning groove, the first positioning groove, the second positioning groove and the third positioning groove are used for limiting the grass beating rope, the first positioning groove and the second positioning groove are arranged at an angle, and the first positioning groove is parallel to the third positioning groove.

Further, the first positioning groove is perpendicular to the second positioning groove.

Further, the first positioning mechanism includes a first positioning protrusion, a second positioning protrusion, and a third positioning protrusion, the first positioning protrusion and the second positioning mechanism form a first positioning groove, the second positioning protrusion and the second positioning mechanism form a second positioning groove, and the third positioning protrusion and the second positioning mechanism form a third positioning groove.

Furthermore, the third positioning protrusion comprises a bottom wall and a side wall formed by protruding from the bottom wall, the side wall is arranged opposite to the second positioning mechanism, and the second positioning groove is formed among the bottom wall, the side wall and the second positioning mechanism.

Furthermore, the grass mowing disc is provided with an accommodating space for accommodating the cover body, and the side wall is located between the accommodating space and the second positioning groove.

Further, the third positioning protrusion comprises a plurality of side walls, a second positioning groove is formed between two adjacent side walls, and the second positioning mechanism and the adjacent side wall form another second positioning groove.

Furthermore, the second positioning mechanism comprises a positioning seat and a positioning part arranged on the positioning seat, the positioning part comprises a first limiting part and a second limiting part which are arranged at intervals, a limiting space of the blade is formed between the first limiting part and the second limiting part, and the second limiting part at least partially covers the first limiting groove and the third limiting groove.

Furthermore, the first limiting part is parallel to the second limiting part, and the radial size of the first limiting part is smaller than that of the second limiting part.

Further, the grass mowing disc comprises a guide portion, and the guide portion is located between the power receiving portion and the second positioning mechanism in the circumferential direction of the grass mowing disc.

On the other hand, this application still provides a grass mower, grass mower includes operating means, drive arrangement and as before the grass-mowing head, drive arrangement is configured to the drive grass-mowing head rotates.

This application can assemble respectively through first positioning mechanism and second positioning mechanism and beat grass rope and blade to be suitable for the pruning of different plants, be favorable to expanding the application scene of machine of beating grass, the cost is also lower simultaneously.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the grass-mowing head of the present application.

FIG. 2 is a schematic view of the grass cutting disc of the grass cutting head of FIG. 1, with the grass cutting cord uninstalled and the blades installed.

Fig. 3 is a partially enlarged view of the region O shown in fig. 2.

FIG. 4 is a schematic view of the grass cutting disc of the grass cutting head of FIG. 1, with the grass cutting cord and blades installed.

Fig. 5 is a schematic structural view of another embodiment of the grass-mowing head of the present application.

FIG. 6 is a schematic view of an embodiment of the present lawnmower.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the exemplary embodiments below do not represent all embodiments consistent with the present application.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed after "comprises" or "comprising" is inclusive of the element or item listed after "comprising" or "comprises", and the equivalent thereof, and does not exclude additional elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The application provides a grass mowing head which can be driven to rotate around a preset axis, the grass mowing head comprises a grass mowing disc and a cover body, and the grass mowing disc comprises a power receiving part, a first positioning mechanism and a second positioning mechanism; the power receiving part is configured to receive the driving force transmitted by the cover body; the first positioning mechanism is configured to hold a grass mowing rope; a second positioning mechanism configured to hold the blade in a manner that allows the blade to rotate; the first positioning mechanism is provided with a first positioning groove, a second positioning groove and a third positioning groove, the first positioning groove, the second positioning groove and the third positioning groove are used for limiting the grass beating rope, the first positioning groove and the second positioning groove are arranged at an angle, and the first positioning groove is parallel to the third positioning groove.

Referring to fig. 1, the grass cutting head of the present embodiment includes a grass cutting disc 1 and a cover 2 installed on the grass cutting disc 1, wherein the cover 2 is used for transmitting power of a driving device (e.g., a motor) to the grass cutting disc 1, so as to drive a grass cutting rope or a blade assembled on the grass cutting disc to rotate, thereby performing trimming operation.

Referring to fig. 2 to 4, the grass mowing disc 1 includes a disc body 10, a power receiving portion 11, a first positioning mechanism 12 and a second positioning mechanism 13. The power receiving part 11 is used for receiving power transmitted by the cover body 2, specifically, the cover body 2 includes a cover body 20, a power transmitting part 21 connected with the cover body, and an air guiding structure 22, and the power transmitting part 21 can be directly connected with a driving device (for example, a motor), so that the grass mowing disc 1 can rotate around the central axis of the grass mowing disc (or the cover body) along with the cover body 2, and further the grass mowing rope 3 or the blade 4 is driven to perform cutting action. The wind guiding structure 22 is used as a fan blade to guide air. In the present embodiment, the number of the power receiving portions 11 is two and formed on the boundary of the disc main body 10, and the two power receiving portions 11 are substantially symmetrical with respect to the central axis of the grass mowing disc 1.

The first positioning mechanism 12 includes a first positioning protrusion 121, a second positioning protrusion 122, and a third positioning protrusion 123, and the first positioning protrusion 121, the second positioning protrusion 122, and the third positioning protrusion 123 are sequentially arranged along the circumferential direction of the second positioning mechanism 13. A first positioning groove 1210 is formed between the first positioning protrusion 121 and the second positioning mechanism 13, a second positioning groove 1220 is formed between the second positioning protrusion 122 and the second positioning mechanism 13, a third positioning groove 1230 is formed between the third positioning protrusion 123 and the second positioning mechanism 13, and the three positioning grooves are respectively used for holding three sections of the grass mowing rope. The first positioning slot 1210 (or the first positioning protrusion 121) and the second positioning slot 1220 (or the second positioning protrusion 122) are disposed at an angle and parallel to the third positioning slot 1230, so that the grass mowing rope 3 is substantially U-shaped when being mounted on the grass mowing disc. Preferably, the first positioning groove 1210 is perpendicular to the second positioning groove 1230.

The second positioning protrusion 122 includes a bottom wall 1221 and a sidewall 1222 protruding from the bottom wall 1221, the sidewall 1222 is disposed opposite to the second positioning mechanism 13, and a second positioning slot 1220 is formed between the bottom wall 1221, the sidewall 1222 and the second positioning mechanism. The grass mowing disc 1 is provided with a containing space for containing the grass mowing disc, and the side wall 1222 is positioned between the containing space and the second positioning groove 1220, so that the cover body 2 is prevented from pressing the grass mowing rope 3 in the process of being assembled to the grass mowing disc 1, and the grass mowing rope 3 is prevented from being damaged.

Referring to fig. 5, the number of sidewalls may be multiple, such as sidewall 1222A and sidewall 1222B. A second positioning slot 1220A is formed between two

adjacent sidewalls

1222A, 1222B, and the second positioning mechanism 13 and the adjacent sidewall form another second positioning slot 1220B. The grass mowing rope 3 is longer at the beginning, so that the grass mowing rope 3 sequentially passes through the first positioning groove 1210, the second positioning groove 1220A and the third positioning groove 1230; after the grass mowing rope is used for a period of time, the edge of the tail end of the grass mowing rope is seriously worn and can be cut off, and the part originally kept in the second positioning groove 1220A is placed in the second positioning groove 1220B, so that the extending length of the grass mowing rope is kept unchanged, and the grass mowing rope can continue to work. Of course, if the cord is initially short, the cord may be directly retained in the first positioning groove 1210, the second positioning groove 1220B and the third positioning groove 1230.

With reference to fig. 1 to 4, the second positioning mechanism 13 includes a positioning seat 131 and a positioning element 132 installed on the positioning seat, the positioning element 132 includes a first limiting portion 1321 and a second limiting portion 1322 arranged at an interval, the first limiting portion 1321 is parallel to the second limiting portion 1322, and a radial dimension of the first limiting portion 1321 is smaller than a radial dimension of the second limiting portion 1322. The first position-limiting portion 1321 and the second position-limiting portion 1322 form a position-limiting space of the blade therebetween. When the blade 4 is mounted, the abdicating hole 31 (the radial dimension of which is larger than the first limiting portion 1321 and smaller than the second limiting portion 1322) of the blade 4 is firstly made to pass through the first limiting portion 1321, and then the blade 4 is pulled outwards, so that the blade 4 is kept in the limiting space. In this embodiment, the positioning element 132 is a rivet and is fixed in the fixing hole 130 of the positioning seat by riveting. In other embodiments, the positioning element 132 may also be a bolt, a screw, or the like.

The second position-limiting portion 1322 at least partially covers the first position-limiting groove 1210 and the third position-limiting groove 1230. Preferably, the second position-limiting portion 1322 also partially covers the second positioning slot 1220, so that the second position-limiting portion 1322 and each position-limiting slot can hold the mowing cord 2 together.

The grass mowing disc 1 further comprises a guide part 14, a plurality of positioning parts 15, a plurality of supporting parts 16 and a fool-proof part 17. The guiding portion 14 is used for guiding the cover 2, the positioning portion 15 is used for circumferential limiting of the cover 2, the supporting portion 16 is used for supporting the cover 2, and the fool-proof portion 17 only allows the cover to be installed in a correct manner. The guide part 14 is positioned between the adjacent power receiving part 11 and the second positioning mechanism 13 in the circumferential direction of the grass mowing disc 1; the positioning part 15 is positioned between the adjacent guide part 14 and the second positioning mechanism 13; the supporting part 16 is positioned in the center of the supporting plate 1, and the central axis of the supporting part 16 is overlapped with the central axis of the whole grass mowing plate 1; the fool-proof portion 17 is disposed adjacent to the positioning portion 15.

On the other hand, this application still provides a machine of beating grass. Referring to fig. 6, the grass trimmer of the present embodiment includes an operating device 5, a driving device 6, a battery pack 7 and the grass trimmer head. The operating device 5 comprises a rod-shaped structure, a holding mechanism and a control structure arranged on the rod-shaped structure. The driving means 6 may comprise a motor for driving the grass-mowing head in rotation about a predetermined axis, which in this embodiment is both the central axis of the grass-mowing head and the axis of the motor. The battery pack 7 is used to power the motor. In other embodiments, the battery pack is not provided, and the alternating current power supply can be used for supplying power.

This application can assemble respectively through first positioning mechanism and second positioning mechanism and beat grass rope and blade to be suitable for the pruning of different plants, expanded the application scene of machine of beating grass, the cost is also lower simultaneously.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. A grass cutting head capable of being driven to rotate around a predetermined axis, comprising a grass cutting disc and a cover mounted on the grass cutting disc, characterized in that the grass cutting disc comprises:

a power receiving portion configured to receive the driving force transmitted by the cover;

a first positioning mechanism configured to hold a mowing cord;

a second positioning mechanism configured to hold the blade in a manner that allows the blade to rotate;

the grass beating rope limiting device comprises a grass beating rope, a first positioning mechanism, a second positioning mechanism and a third positioning mechanism, wherein the first positioning mechanism is provided with a first positioning groove, a second positioning groove and a third positioning groove, the first positioning groove, the second positioning groove and the third positioning groove are used for limiting the grass beating rope, the first positioning groove and the second positioning groove are arranged in an angle mode, and the first positioning groove is parallel to the third positioning groove.

2. The grass-mowing head according to claim 1, wherein the first positioning groove is perpendicular to the second positioning groove.

3. The grass-mowing head according to claim 1, wherein the first positioning mechanism comprises a first positioning protrusion, a second positioning protrusion and a third positioning protrusion, the first positioning protrusion and the second positioning mechanism form a first positioning groove, the second positioning protrusion and the second positioning mechanism form a second positioning groove, and the third positioning protrusion and the second positioning mechanism form a third positioning groove.

4. The grass-mowing head according to claim 3, wherein the third positioning protrusion comprises a bottom wall and a side wall formed by protruding from the bottom wall, the side wall is arranged opposite to the second positioning mechanism, and the second positioning groove is formed among the bottom wall, the side wall and the second positioning mechanism.

5. The grass-mowing head according to claim 4, wherein the grass-mowing disc has a housing space for accommodating the cover, and the side wall is located between the housing space and the second positioning groove.

6. The grass-mowing head according to claim 4, wherein the third positioning protrusion comprises a plurality of side walls, one second positioning groove is formed between two adjacent side walls, and the second positioning mechanism and the adjacent side wall form another second positioning groove.

7. The grass-mowing head according to claim 1, wherein the second positioning mechanism comprises a positioning seat and a positioning member mounted on the positioning seat, the positioning member comprises a first limiting portion and a second limiting portion which are arranged at intervals, a limiting space of the blade is formed between the first limiting portion and the second limiting portion, and the second limiting portion at least partially covers the first limiting groove and the third limiting groove.

8. The grass-mowing head according to claim 7, wherein the first limiting part is parallel to the second limiting part, and the radial dimension of the first limiting part is smaller than that of the second limiting part.

9. The grass-mowing head according to claim 1, wherein the grass-mowing disc comprises a guide portion located between the power receiving portion and the second positioning mechanism in a circumferential direction of the grass-mowing disc.

10. A lawnmower comprising an operating means, a drive means and a grass cutting head according to any one of claims 1 to 9, the drive means being configured to drive the grass cutting head in rotation.