CN208639010U

CN208639010U - Grass trimmer

Info

Publication number: CN208639010U
Application number: CN201820555533.XU
Authority: CN
Inventors: 査霞红; 赵凤丽; 高彬彬; 付长帅; 倪梯闵
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2017-11-24
Filing date: 2018-04-18
Publication date: 2019-03-26
Anticipated expiration: 2028-04-18
Also published as: CN109832004A; CN208639004U; CN109832003A; CN208242236U; CN109832005A; CN208285836U; CN208639003U; CN109832006A; CN209170911U

Abstract

The utility model discloses a kind of grass trimmer, including shell and blade, shell includes bottom case, and broken grass structure further includes flange, and flange is located at bottom case end, and flange and shell form cutting chamber, blade rotation be installed on shell and being located at cut it is intracavitary.Due to the presence of flange, the flowing of air-flow makes grass be not easy to fall when influencing to cut intracavitary cutting, and flange also can directly make grass be not easy to fall, grass can cut intracavitary multiple cutting, it is equably shed when broken enough on the ground, grass is cut more tiny, and what is be laid on meadow is more uniform, the appearance on meadow is more uniform after then cutting, and broken grass is also easier to be absorbed by soil.Cutting is fine crushing enough when receiving grass is also more easier sufficiently to collect.The utility model further relates to a kind of grass trimmer.

Description

Grass trimmer

Technical field

The utility model relates to turf-mown equipment more particularly to a kind of grass trimmers.

Background technique

As the tool for being suitable for finishing lawn rapidly and efficiently, grass trimmer is in the applications such as urban afforestation and family's weeding Extensively.For the considerations of reducing air pollution, power-operated mower more receives an acclaim compared with steam-operating grass trimmer, and direct current is wireless cuts Careless machine is since the freedom of its movement is more by the favor of user, also, direct current generator has good speed adjusting performance, such as can be achieved Stepless speed regulation, speed-regulating range width, low-speed performance be good, high starting torque, high efficiency etc..

Grass trimmer, which usually all has, receives careless mode and broken careless mode.In the case where receiving careless mode, the cutting chamber and grass box of grass trimmer Between be connection, cut grass under the action of the centrifugal force enter grass box and be collected；Under broken careless mode, grass trimmer Channel between cutting chamber and grass box is closed, and the grass cut is repeatedly hit before falling by high-speed rotating cutting blade And be chopped into, finally it is taped against on ground.

But existing grass trimmer has the following deficiencies:

Existing grass trimmer is cut not fine crushing enough in cutting process medium-height grass, and grass trimmer is caused to be shed under broken careless mode Unevenly and the grass not clean situation of appearance grass receipts in the process is received, causes green surface tidiness bad.

Utility model content

For overcome the deficiencies in the prior art, the purpose of this utility model is to provide one kind can be by the fine crushing of grass cutting Grass trimmer.

The purpose of this utility model is implemented with the following technical solutions:

A kind of grass trimmer, including shell, motor and at least two blades, the shell include bottom case, the bottom case includes Roof, and the side wall extended downwardly from the ceiling edge form cutting for fluid communication between the roof and the side wall Cavity is cut, the blade is identical with the number of the sectioned housing, the blade is equipped in each sectioned housing,

When the blade rotates to the position vertical with the grass trimmer direction of travel, the blade and the side wall it Between spacing be the first spacing, when the blade rotates to the position being overlapped with the grass trimmer direction of travel, the blade Spacing between the side wall is the second spacing, and first spacing is less than second spacing.

Further, the first spacing is 2~15mm.

Further, the second spacing is 5~30mm.

Further, grass trimmer includes flange, and the flange is arranged on the side wall, and the flange is along the side wall Circumferentially extending and radially to the sectioned housing convex for the side wall.

Further, the distance between plane where flange and blade place plane are 3~20mm.

Further, the distance between plane where flange and blade place plane are 8mm.

Further, the grass trimmer includes the drive shaft for connecting the blade, diameter of the side wall in the drive shaft It is upwards 2~30mm with the distance between the blade.

Further, flange the drive shaft radially between the blade at a distance from be -30~30mm.

Further, grass trimmer includes broken grass plug and broken careless corking, and the broken grass plug is fixed on the broken careless corking side And be bonded with the broken careless corking, the broken grass plug end to the broken careless corking end forms the flange.

Further, flange has the blocking surface towards the roof.

Further, cross sectional shape of the cutting chamber on the blade Plane of rotation is ellipse.

Compared with prior art, the utility model grass trimmer further includes flange, and flange is located at bottom case end, flange and shell shape At cutting chamber, blade rotation be installed on shell and be located at cut it is intracavitary, grass cut it is intracavitary cut by blade when, due to flange In the presence of the flowing of air-flow makes grass be not easy to fall when influencing to cut intracavitary cutting, and flange also can directly make grass be not easy to fall, grass Intracavitary multiple cutting can be being cut, equably shed when broken enough on the ground, grass is cut more tiny, on meadow upper berth If it is more uniform, then cut after meadow appearance it is more uniform, broken grass is also easier to be absorbed by soil, receive grass when cutting enough It is fine crushing to be also more easier sufficiently to collect.

Detailed description of the invention

Fig. 1 is a bottom view of this practical grass trimmer；

Fig. 2 is a schematic diagram of internal structure of Fig. 1 grass trimmer；

Fig. 3 is the schematic diagram of Fig. 2 grass trimmer broken careless corking and flange；

Fig. 4 is a structural schematic diagram of one flange of Fig. 1 grass trimmer.

In figure: 100, grass trimmer；10, shell；12, upper casing；14, bottom case；20, flange；30, chamber is cut；40, blade；50, Shaft；60, broken grass plug；70, broken careless corking；80, lip reinforcing rib.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

It should be noted that it can be directly on another component when component is referred to as " being fixed on " another component Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical ", " horizontal ", "left", "right" and similar statement for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes Any and all combinations of one or more related listed items.

Referring to attached drawing 1 to 4, a kind of grass trimmer 100 includes shell, motor and at least two blades 40.Specifically, shell 10 With roof 12 and the side wall 14 extended downwardly from 12 edge of roof, the middle part of roof 12 is provided with a centre bore, for driving Moving axis passes through, and the sectioned housing 30 of a fluid communication is wherein formed between roof 12 and side wall 14, and the setting of blade 40 is being cut In cavity 30.The position that one of rear-wheel is closed on the side wall 14 of bottom case 10 is equipped with straw outlet, and cavity passes through straw outlet and grass Case connection, facilitates the grass cuttings cut off to be discharged into grass box by straw outlet, and the grass trimmer of this form may be implemented to receive from straw outlet Collect grass cuttings, or grass cuttings is allowed to be exhausted directly on meadow.If it is not necessary that setting if collecting grass cuttings, can also do not had to for Lysimachia sikokiana Straw outlet allows the grass cuttings sliced off directly to fall on meadow.

Cross sectional shape of the sectioned housing 30 on 40 Plane of rotation of blade is ellipse, progressive to provide preferable air-flow Property, so that cut-off grass is effectively improved circular cross-section sectioned housing air-flow as progressive air-flow recycles in sectioned housing Mutation causes cut-off grass to be easy the case where falling from cutting chamber, to allow grass repeatedly to cut in the cavity, when careless quilt Cutting it is broken enough when uniformly shed on the ground.It receives in careless situation also in this way, collecting the grass cut away sufficiently.Such as Shown in attached drawing 2 and attached drawing 3, the edge of blade 40 is 2~30mm along the distance between drive shaft radial direction and side wall 14 H, specifically, Ellipse has long axis and short axle in geometrical relationship, corresponding, cuts section of the chamber 30 on 40 Plane of rotation of blade and also has There are long axis X and short axle Y, wherein long axis X is arranged along the direction that grass trimmer 100 is advanced, and short axle Y is set along the direction perpendicular to long axis X It sets.As shown in Fig. 2, when blade 40 rotates to consistent with 100 direction of travel of grass trimmer, i.e., when blade 40 is overlapped with long axis X, knife The edge of piece 40 is 5~30mm along the distance between long axis X-direction and side wall 14 H1, and so distance is arranged so that before spiral case The grass in portion easily enters in spiral case, promotes the cut quality of grass trimmer, it is ensured that green surface tidiness in cutting process.It is preferred that Ground, the edge of blade 40 are 8mm, 20mm, 24mm along the distance between long axis X-direction and side wall 14 H1.When blade 40 rotates to When vertical with 100 direction of travel of grass trimmer, i.e., when blade 40 is overlapped with short axle Y, the edge of blade 40 on short axle Y with side wall 14 The distance between H2 be 2~15mm, so distance setting enables grass trimmer 100 cutting when cut to grass as much as possible Level ground edge, the foot of a wall etc. are difficult to the grass in the place cut to, to avoid also needing to carry out these places after being cut with grass trimmer Secondary cut.Preferably, the edge of blade 40 is 3mm, 5mm, 10mm along the distance between short axle Y-direction and side wall 14 H2.

The side wall 14 of shell 10 is equipped with flange 20, and flange 20 is along the circumferentially extending of side wall 14 and radially to sectioned housing 30 convexes are for side wall 14, and when the blade 40 of rotation is mowed on meadow, the disconnected grass cut off is in high-speed rotating blade 40 Effect is lower to generate centrifugal force, so that disconnected grass can be moved to side wall 14, but the grass that breaks simultaneously turns at this time in the whereabouts of the effect of gravity The disconnected grass that side 20 can be used for stopping to be cut off is fallen, and axially has gap along drive shaft between flange 20 and roof 12, this The space for holding grass is had between sample flange 20 and roof 12.Flange 20 can influence the flowing of gas in cavity, flange week To more comprising blade, gas pressure intensity is bigger in cavity, therefore grass is not easy to fall, and can repeatedly cut in the cavity.Flange 20 With the blocking surface towards roof 12, the rotation of the plane where intersection between blocking surface and side wall 14 perpendicular to drive shaft 3 Axis can effectively stop the whereabouts of the disconnected grass sliced off in this way, and the flange being arranged such improves the rotation of blade 40 The intracorporal flowing of chamber that the air-flow of generation is surrounded in roof 12 and side wall 14, so that disconnected grass is not easy from blade 40 and side wall Gap between 14 is directly fallen.The blocking surface of flange 20 and the bottom surface 14 of plane and side wall 14 where the intersection of side wall 14 are flat Together, the bottom surface of preferred blocking surface and side wall 14 is substantially in approximately the same plane, in this way, the cutting that blocking surface is lower than blade 40 is flat Face, in addition, the volume with disconnected grass in blocking surface accumulation increases, blade 40 will encounter disconnected grass group, and grass disconnected in this way will be by knife Piece 4 crushes, and the grass cuttings being interrupted can be fallen from the edge of blocking surface.

It is more preferable in order to the effect that keeps disconnected grass pulverized, preferred flange 20 along drive shaft it is radial with 40 end of blade it Between distance m be -30~30mm, blocking surface along it is axial along drive shaft 3 with the distance between blade 40 k be 3~20mm, In one embodiment, the distance can be 6mm, 8mm, 10mm, 14mm, cut in this way it is disconnected grass with rotation blade 40 again Fall on blocking surface, then as air-flow repeatedly recycles in sectioned housing, i.e., blade 40 to fall on blocking surface it is disconnected grass into Row repeatedly crushes the purpose that equally can achieve circulation cutting, neither influences to mow, can also crush to disconnected grass.

Further, to improve the effect for cutting to side, grass trimmer 100 further includes lip reinforcing rib 80, lip reinforcing rib 80 can be improved the structural strength of side wall 14, to enable the thickness of side wall 14 to further decrease, to keep blade more preferable Ground touches the grass in the place such as lawn edge, the foot of a wall.

Grass trimmer 100 further includes broken grass plug 60, broken grass match 60 be fixedly installed in broken careless 70 side of corking and with broken careless corking 70 fittings.Broken grass corking 70 forms flange 20 from broken grass 60 ends of plug between 70 end of broken careless corking.In another embodiment, Flange 20 is located at broken careless 70 end of corking and is integrally formed with broken careless corking 70.

In embodiments described above, it can be seen that the purport of the utility model is the disconnected grass for the length for stopping to be cut off It falls, or perhaps extend disconnected grass falls the time, so as to form the multiple cutting to disconnected grass, is fallen in this way on ground Grass cuttings are exactly broken grass, short grass, can form the organic fertilizer on meadow, that is, save the cost for collecting grass cuttings, while giving meadow again Increase natural free of contamination fertilizer.

The utility model is only illustrated by taking one of grass trimmer as an example, and certainly, the grass trimmer of the utility model is not It is confined to this, such as air-flotation type grass trimmer, self-driven mower or full automatic grass trimmer can be practical new using this The guide plate of type, in addition cutting element is using other forms such as cutting line, cutting chain, triangular blade or multitool sheet form etc. Also it can be applied to the utility model, and some leaf shattering machines or grass chopper etc. for crushing can also apply this reality It is managed with novel broken grassland.All all technical solutions formed using equivalent replacement or equivalent transformation are all fallen within practical It is novel it is claimed within the scope of.

It will be apparent to those skilled in the art that can make various other according to the above description of the technical scheme and ideas Corresponding change and deformation, and all these changes and deformation all should belong to the protection of the utility model claims Within the scope of.

Claims

1. a kind of grass trimmer, including shell, motor and at least two blades, the shell include bottom case, the bottom case includes top Wall, and the side wall extended downwardly from the ceiling edge, form the cutting of fluid communication between the roof and the side wall Cavity, the blade is identical with the number of the sectioned housing, and the blade is equipped in each sectioned housing,

It is characterized by: when the blade rotates to the position vertical with the grass trimmer direction of travel, the blade and institute The spacing stated between side wall is the first spacing, when the blade rotates to the position being overlapped with the grass trimmer direction of travel, Spacing between the blade and the side wall is the second spacing, and first spacing is less than second spacing.

2. grass trimmer according to claim 1, which is characterized in that first spacing is 2~15mm.

3. grass trimmer according to claim 1, which is characterized in that second spacing is 5~30mm.

4. grass trimmer according to claim 1, it is characterised in that: the grass trimmer includes flange, and the flange setting exists On the side wall, the flange is along the circumferentially extending of the side wall and radially to the sectioned housing convex for the side Wall.

5. grass trimmer according to claim 4, it is characterised in that: plane where plane where the flange and the blade The distance between be 3~20mm.

6. grass trimmer according to claim 5, it is characterised in that: plane where plane where the flange and the blade The distance between be 8mm.

7. grass trimmer according to claim 1, it is characterised in that: the grass trimmer includes the driving for connecting the blade Axis, the side wall the drive shaft radially between the blade at a distance from be 2~30mm.

8. grass trimmer according to claim 4, it is characterised in that: the flange the drive shaft radially with it is described The distance between blade is -30~30mm.

9. grass trimmer according to claim 1, it is characterised in that: the grass trimmer includes broken grass plug and broken careless corking, institute It states broken grass plug to be fixed on the broken careless corking side and be bonded with the broken careless corking, the broken grass plug end to the broken grass plug Lid end forms the flange.

10. grass trimmer according to claim 1, it is characterised in that: the flange has the blocking surface towards the roof.

11. grass trimmer according to claim 1, it is characterised in that: the cutting chamber is on the blade Plane of rotation Cross sectional shape is ellipse.