CN106804198B

CN106804198B - Multifunctional grass mowing machine

Info

Publication number: CN106804198B
Application number: CN201710034792.8A
Authority: CN
Inventors: 黄龙; 安晓勇; 吴学超; 许折折
Original assignee: Zhejiang YAT Electrical Appliance Co Ltd
Current assignee: Zhejiang YAT Electrical Appliance Co Ltd
Priority date: 2017-01-18
Filing date: 2017-01-18
Publication date: 2023-05-05
Anticipated expiration: 2037-01-18
Also published as: CN106804198A

Abstract

The invention discloses a multifunctional grass cutting machine, which belongs to the field of garden tools and comprises a machine head and a handheld rod connected with the machine head, wherein a motor is arranged in the machine head and is connected with an output shaft, and the output shaft is in driving connection with a grass cutting assembly.

Description

Multifunctional grass mowing machine

[ field of technology ]

The invention relates to a multifunctional grass trimmer, and belongs to the field of garden tools.

[ background Art ]

In the existing weeding equipment field, the grass trimmer is a common garden tool, the structure of the grass trimmer mainly comprises a motor, the grass trimmer is driven by the motor to rotate, the grass trimmer is used for smashing weeds, new grass is smashed, the lawn trimming effect is achieved, and therefore labor intensity of gardeners is greatly reduced.

At present, the grass cutting machine is generally used for cutting grass in two modes, one is nylon ropes, and the other is plastic blades, and the grass cutting machine cannot cut grass with a large amount of bushes, weeds and uneven ground due to limited strength and elasticity of a cutting tool. When shrubs are arranged in the flat grasslands, the shrubs cannot be forcibly cut by the conventional grass trimmer at present, and the blades are easy to break or abrade, so that the service life of the machine is influenced.

[ invention ]

The invention aims to solve the technical problems of overcoming the defects of the prior art and providing the multifunctional grass mower which is multipurpose, can crush weeds and can cut shrubs, and has wider application range.

The technical problems are solved, and the invention adopts the following technical scheme:

the utility model provides a multifunctional grass cutting machine, includes the aircraft nose and holds the pole with the aircraft nose is connected, be equipped with the motor in the aircraft nose, the motor is connected with the output shaft, output shaft drive is connected with the subassembly of beating grass, install the cover that switches on the output shaft, the subassembly of beating grass is installed and is connected on switching and sheathe in, still detachably connected with the saw bit that the cutting shrub was used on switching.

Preferably, the grass mowing assembly comprises a cutter disc frame and a grass mowing knife, wherein the cutter disc frame is sleeved on the adapter sleeve, and the grass mowing knife is detachably connected to the cutter disc frame.

Preferably, the cutter head frame is provided with a fixed column, the fixed column is provided with a ring groove, and the grass mowing knife is fixed in the ring groove.

Preferably, the grass mowing knife is provided with a fixing hole and a sleeve hole, the fixing hole is communicated with the sleeve hole, the inner diameter of the sleeve hole is larger than the outer diameter of the fixing column, the grass mowing knife is sleeved on the fixing column through the sleeve hole when being installed, and then the grass mowing knife is clamped in the annular groove through the fixing hole.

Preferably, the cutter head is provided with a cutter groove, the fixing column is arranged in the cutter groove, and the side wall of the cutter groove is used for limiting the rotation range of the grass mowing cutter.

Preferably, the cutter head is provided with a first central hole, and the first central hole is in interference fit with the adapter sleeve or fixed through a fastener; or the cutterhead frame and the adapter sleeve are of an integrated structure.

Preferably, a first step ring is arranged on the peripheral side face of the adapter sleeve, a limiting convex ring is arranged at the first center hole, and the limiting convex ring abuts against the top of the first step ring.

Preferably, the adapter sleeve is provided with a second step ring, the adapter sleeve is provided with a pressing seat, and the saw blade is clamped between the pressing seat and the second step ring.

Preferably, the second step ring is provided with a third step ring in an axially protruding mode, the saw blade is provided with a second center hole, and the second center hole is sleeved on the third step ring.

Preferably, the grass cutting assembly comprises a grass cutting knife, and after the grass cutting assembly and the saw blade are correspondingly arranged on the adapter sleeve, an axial gap between the grass cutting knife and the saw blade is between 5mm and 40 mm.

The beneficial effects of the invention are that:

according to the invention, the adapter sleeve is additionally arranged on the output shaft of the motor, the grass cutting assembly can be arranged on the adapter sleeve, the saw blade can also be arranged on the adapter sleeve, the grass cutting assembly is mainly used for crushing new grass, the saw blade can be used for cutting shrubs, and a user can simultaneously install the grass cutting assembly and the saw blade on the adapter sleeve when using the adapter sleeve, so that the motor rotates to simultaneously drive the grass cutting assembly and the saw blade to rotate, the grass cutting function can be realized, the function of cutting shrubs can also be realized, and the grass cutting assembly can also be easily used when meeting a lawn with shrubs, and the design is designed to enable the functions of the grass cutting machine to be more diversified, so that the grass cutting range suitable for the grass cutting assembly is wider, meanwhile, the grass cutting assembly can not be influenced by thicker shrubs, so that the grass cutting assembly is protected, and the working life of the grass cutting assembly is prolonged.

Of course, the user can also independently detach the grass cutting assembly or independently detach the saw blade according to actual needs, and the grass cutting function is singly realized or the function of cutting shrubs is singly realized, so that the load of the motor is smaller, and the energy consumption is more saved.

Other features and advantages of the present invention will be disclosed in the following detailed description of the invention and the accompanying drawings.

[ description of the drawings ]

The invention is further described with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of a whole machine of a first embodiment of a grass trimmer of the present invention;

FIG. 2 is a schematic view of a machine head in a first embodiment of the grass trimmer of the present invention;

FIG. 3 is a schematic cross-sectional view of a head of a first embodiment of the grass trimmer of the present invention;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

FIG. 5 is a schematic diagram illustrating the assembly of a grass cutter and a cutterhead frame in accordance with a first embodiment of the grass cutter;

FIG. 6 is a schematic view of an assembly of a saw blade and an adapter sleeve in accordance with a first embodiment of the present invention.

[ detailed description ] of the invention

Example 1:

as shown in fig. 1 to 6, this embodiment is a grass cutting machine, including aircraft nose and the handheld pole 1 of being connected with the aircraft nose, handheld pole 1 is scalable, and the tip of handheld pole 1 is equipped with control switch 11, and the aircraft nose includes casing 21, installs motor 3 in the casing 21, and motor 3 is connected with output shaft 31, and output shaft 31 stretches out the bottom of casing 21 downwards, and guard 22 is installed to the bottom of casing 21, motor 3 is connected with output shaft 31, output shaft 31 drive is connected with grass cutting subassembly 4, install adapter sleeve 5 on the output shaft 31, grass cutting subassembly 4 detachable connection is in adapter sleeve 5 is last still detachable saw bit 6 that is used for cutting the bush.

In this embodiment, an adapter sleeve 5 is additionally installed on the output shaft 31 of the motor 3, the adapter sleeve 5 can be provided with a grass cutting component 4 and a saw blade 6, the grass cutting component 4 is mainly used for crushing new grass, the saw blade 6 can be used for cutting shrubs, when in use, a user can simultaneously install the grass cutting component 4 and the saw blade 6 on the adapter sleeve 5, and therefore the motor 3 can simultaneously drive the grass cutting component 4 and the saw blade 6 to rotate when rotating, the grass cutting function can be realized, the function of cutting shrubs can also be realized, and when a lawn with shrubs is encountered, the grass cutting component can also be easily handled, so that the grass cutting machine is designed to have more diversified functions, the applicable grass cutting range is wider, meanwhile, the grass cutting component 4 can not be influenced by thicker shrubs due to the cutting action of the saw blade 6, the grass cutting component 4 is protected, and the working life of the grass cutting component 4 is prolonged.

Of course, the user can also independently detach the grass mowing assembly 4 according to actual needs, and the grass mowing work is realized singly, so that the load of the motor 3 is smaller, and the energy consumption is saved.

The concrete structure is as follows:

referring to fig. 2 to 6, the adapter sleeve 5 is sleeved on the output shaft 31, a first step ring 51 and a second step ring 52 are arranged on the peripheral side surface of the adapter sleeve 5, the first step ring 51 is located above the second step ring 52, a fixing nut 54 is connected to the bottom of the adapter sleeve 5 through threads, the grass cutting assembly 4 is installed on the first step ring 51, and the saw blade 6 is installed between the second step ring 52 and the fixing nut 54.

Grass cutting assembly 4: the grass cutter comprises a cutter disc frame 41 and a grass cutter 42, wherein the cutter disc frame 41 is provided with a first central hole 411, the first central hole 411 is sleeved on a first step ring 51, and the connection mode between the first central hole 411 and the first step ring 51 can be in an interference fit mode; or the first central hole 411 and the first step ring 51 are fastened by fastening screws; or the cross section of the first step ring 51 is set to be non-circular, and the cross section of the first central hole 411 is matched with the cross section of the first step ring 51; or the cutter head frame 41 and the adapter sleeve 5 are directly arranged into an integrated structure, and the cutter head frame 41 can rotate together with the adapter sleeve 5 in the above modes. In this embodiment, it is preferable to integrally mold the cutterhead holder 41 and the adapter sleeve 5, and since the adapter sleeve 5 is usually a metal piece, the cutterhead holder 41 is usually an injection molding piece, and during manufacturing, the cutterhead holder 41 and the adapter sleeve 5 can be integrally injection molded by adopting a secondary encapsulation method.

In order to make the connection between the cutterhead frame 41 and the adapter sleeve 5 more stable, a first step ring 51 is arranged on the peripheral side surface of the adapter sleeve 5, a limiting convex ring 412 is arranged at the first center hole 411, and the limiting convex ring 412 abuts against the top of the first step ring 51, so that the top of the first step ring 51 plays a role in limiting the cutterhead frame 41 in the downward direction, the self gravity of the cutterhead frame 41 can be offset, and the balance during rotation can be enhanced.

The grass cutter 42 may be a nylon blade or a nylon rope, in this embodiment, preferably, the nylon blade is detachably connected to the cutterhead frame 41, and in this embodiment, two nylon blades are respectively circumferentially spaced at the outer edge of the cutterhead frame 41.

The concrete connection mode of nylon blade and cutter disc frame 41 can see fig. 5, one of them is installed in the drawing, and another is uninstalled, be equipped with fixed column 43 on cutter disc frame 41, be equipped with annular 4301 on the fixed column 43, be equipped with fixed hole 421 and trepanning 422 on the grass cutter 42, the intercommunication in the middle of fixed hole 421 and the trepanning 422, the internal diameter of trepanning 422 is greater than the external diameter of fixed column 43, and the internal diameter of fixed hole 421 is less than the external diameter of fixed column 43, and grass cutter 42 is installed through utilizing trepanning 422 to embolia fixed column 43 earlier on, then translation grass cutter 42 moves fixed hole 421 into annular 4301 to realize grass cutter 42 cartridge to annular 4301 in.

The fixing hole 421 is closer to the adapter sleeve 5 than the sleeve hole 422, so that the grass cutter 42 is not separated from the fixing hole 421 due to centrifugal effect when the cutterhead holder 41 rotates. In addition, in this embodiment, the cutterhead frame 41 is provided with a cutter groove 44, the fixing column 43 is arranged in the cutter groove 44, when the grass cutter 42 is clamped in the annular groove 4301 in this embodiment, the grass cutter 42 can still rotate in the annular groove 4301, and when the grass cutter is not working, the grass cutter 42 can be rotated and stored, after the cutter groove 44 is arranged, the two side walls of the cutter groove 44 can limit the rotation range of the grass cutter 42, so that the cutting force and the crushing force of the grass cutter 42 on weeds in the rotation process are larger.

As shown in fig. 4, the fixing post 43 in this embodiment includes three parts, including a first gasket 431, a second gasket 432 and a rivet 433, where the first gasket 431 is disposed on the top surface of the cutterhead frame 41, the second gasket 432 is disposed on the bottom surface of the cutterhead frame 41, the rivet 433 penetrates from below the cutterhead frame 41 and passes through the second gasket 432 and the first gasket 431, the top is riveted on the first gasket 431, and the ring groove 4301 is formed between the bottom of the rivet 433 and the second gasket 432, which will be understood by those skilled in the art that the fixing post 43 may be integrally formed on the cutterhead frame 41.

Specific mounting structure of the saw blade 6: in order to increase the compression area, in this embodiment, a compression seat 55 is further disposed between the second step ring 52 and the fixing nut 54, the saw blade 6 is compressed between the compression seat 55 and the second step ring 52, the bottom of the compression seat 55 in this embodiment is provided with a nut groove 551, and the fixing nut 54 is just contained in the nut groove 551 when being screwed, so that shrubs, weeds and the like are not easy to touch the fixing nut 54, and the loosening probability of the fixing nut 54 can be reduced.

In order to make the concentricity of the rotation of the saw blade 6 better, the second step ring 52 is provided with a third step ring 53 in a protruding way downwards along the axial direction, the diameter of the third step ring 53 is smaller than that of the second step ring 52, the saw blade 6 is provided with a second center hole 61, the second center hole 61 is sleeved on the third step ring 53, and in this way, the saw blade 6 cannot move radially in the rotation process, and the concentricity is better.

When the grass cutting assembly 4 and the saw blade 6 are simultaneously installed on the machine head, the axial gap between the grass cutting blade 42 and the saw blade 6 is between 5mm and 40mm, the axial gap is too small, the cutter head frame 41 is easy to interfere with the saw blade 6 when being deformed under the influence of external force in the rotation process, so that abrasion is generated on the cutter head frame 41, the axial gap is too large, the acting force of the grass cutting assembly 4 and the distance between the acting force of the saw blade 6 are easy to be caused, the shearing force is large on the adapter sleeve 5, and the service life of the adapter sleeve 5 is influenced.

While the invention has been described in terms of embodiments, it will be appreciated by those skilled in the art that the invention is not limited thereto but rather includes the drawings and the description of the embodiments above. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.

Claims

1. The multifunctional grass cutting machine comprises a machine head and a handheld rod connected with the machine head, wherein a motor is arranged in the machine head, the motor is connected with an output shaft, and the output shaft is in driving connection with a grass cutting assembly; the peripheral side surface of the adapter sleeve is provided with a first step ring, a limiting convex ring is arranged at the first central hole, and the limiting convex ring abuts against the top of the first step ring; the adapter sleeve is provided with a second step ring, the adapter sleeve is provided with a pressing seat, and the saw blade is clamped between the pressing seat and the second step ring; the second step ring is provided with a third step ring in an axial protruding mode, the saw blade is provided with a second center hole, and the second center hole is sleeved on the third step ring; the cutter head frame is provided with a fixed column, the fixed column is provided with a ring groove, and the grass mowing knife is fixed in the ring groove.

2. The multifunctional grass trimmer of claim 1, wherein the grass trimmer is provided with a fixing hole and a sleeve hole, the fixing hole is communicated with the sleeve hole, the inner diameter of the sleeve hole is larger than the outer diameter of the fixing column, and the grass trimmer is sleeved on the fixing column through the sleeve hole and then clamped in the annular groove through the fixing hole when being installed.

3. The multifunctional grass trimmer of claim 2, wherein the cutterhead is provided with a cutter slot, the fixed column is arranged in the cutter slot, and the side wall of the cutter slot is used for limiting the rotation range of the grass cutter.

4. A multifunctional grass trimmer according to any one of claims 1-3 wherein the grass cutting assembly includes a grass cutting blade, and wherein the axial gap between the grass cutting blade and the saw blade is between 5mm and 40mm after the grass cutting assembly and the saw blade are correspondingly mounted to the adapter sleeve.