CN210868767U

CN210868767U - Grass trimmer with adjustable cutting diameter

Info

Publication number: CN210868767U
Application number: CN201920881710.8U
Authority: CN
Inventors: 安晓勇; 蒲青文; 万立军
Original assignee: Zhejiang YAT Electrical Appliance Co Ltd
Current assignee: Zhejiang YAT Electrical Appliance Co Ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-06-30
Anticipated expiration: 2029-06-12

Abstract

The utility model discloses a cutting diameter adjustable machine of beating grass belongs to the electronic garden instrument field of hand-held type, the utility model discloses in beat the grass machine including beat grass head and protection casing, be equipped with the rope of beating grass in the head of beating grass, beat the grass rope tip and wear out the head side of beating grass, be equipped with the blade that cuts off the rope of beating grass and wear out the end in the protection casing inboard, the blade is in order to change the radial distance with the head of beating grass, radial distance includes blade rotating to the first radial distance that corresponds when leaving the head of beating grass the nearest position and blade rotating to the second radial distance that corresponds when leaving the head of beating grass the most distant position, first radial distance is less than the second radial distance, the regulation of the blade of this machine of beating grass on the protection casing is more convenient, need not to dismantle the blade and can change the cutting diameter, the control range is wide, therefore, the practicality is strong, need not the human body and contacts the blade repeatedly, and.

Description

Grass trimmer with adjustable cutting diameter

[ technical field ] A method for producing a semiconductor device

The utility model relates to a hand-held type electric garden instrument, concretely relates to cutting diameter adjustable machine of beating grass.

[ background of the invention ]

A grass trimmer is a handheld tool for cutting weeds in places such as lawns, gardens, pastures and the like, reduces the labor intensity of weed trimmers when in use, improves the weeding efficiency, is clean to harvest and neat to lay, has a grass trimmer head divided into two types, namely a blade and a grass trimming rope, has strong cutting force for cutting thick shrubs and the like, is sharp at the blade edge, is easy to hurt users, has heavy volume and small application range, is more suitable for being used in open environments, needs to replace blades with different sizes on different use occasions, is troublesome to operate, is more portable when cutting is finished by exposing the grass trimming rope, can not hurt users, has high safety, only needs to discharge new grass trimming ropes inside after the exposed grass trimming ropes are broken, is convenient to operate, and has wide use range, the cutting diameter can be changed by only changing the exposed length of the grass mowing rope, so that the grass mowing rope is suitable for different environments, and is suitable for flower beds, tree bottoms, stone steps, edges, corners and dead corners except wide environments.

[ summary of the invention ]

The utility model aims to solve the technical problem that how to make the regulation of blade on the protection casing more convenient, need not dismantle the blade and can change the cutting diameter.

Solve above-mentioned technical problem, utility model adopts following technical scheme: the utility model provides a cutting diameter adjustable machine of beating grass, is including beating grass head and protection casing, it is equipped with the rope of beating grass in the head to beat grass, beat grass rope tip and wear out the head side of beating grass, its characterized in that is equipped with the blade that cuts off the rope of beating grass and wear out the end in the protection casing inboard, and the blade rotates in the protection casing in order to change and the radial distance of beating the head of grass, radial distance includes the blade rotation to the first radial distance that corresponds when the position that is the nearest from beating the head of grass and the second radial distance that the blade rotation corresponds when to the position that is the farthest from beating the head of grass, and first radial distance is less than the second radial distance.

Adopt utility model's beneficial effect:

when cutting diameter need be adjusted in the first use of beating grass, need not with the help of external instrument, directly change the position in the protection casing through the blade at the protection casing internal rotation, thereby change the blade and the radial distance of beating the grass head, confirm behind the blade position, when beating the grass head high-speed rotatory, beat the grass rope and straighten along with beating the high-speed rotatory of grass head and under the effect of centrifugal force, the part of rotatory position department to blade place surpasss beyond the blade is cut off by the blade, remaining beating the grass rope is worn out length and can be satisfied the needs of cutting diameter, it is convenient to adjust, therefore, the steam generator is simple to operate, the blade is all adjustable at the radial distance between the first nearest position of beating the grass and the farthest position at rotatory in-process distance, the control range is wide, therefore, the clothes generator is strong in practicability.

Preferably, the protective cover is provided with a knob component for driving the blade to rotate, the blade is rotated clockwise and anticlockwise within 360 degrees in the protective cover by rotating the knob component, and the protective cover is simple in structure, large in rotation range and strong in flexibility.

Preferably, the knob assembly comprises a knob body arranged on the outer side of the protective cover, a connecting rod is fixedly arranged on the knob body, one end, far away from the knob body, of the connecting rod penetrates through the protective cover, an installation table is fixedly arranged at one end, far away from the knob body, of the connecting rod, and the blade is fixedly arranged on the installation table.

The protection casing outside is arranged in to the knob body, in the protection casing outside the operation can, the security is high, even need not stop the machine of beating grass at the in-process of beating grass also can change the cutting diameter through the rotating knob body, has improved regulation efficiency and convenience, and knob body, connecting rod, mount table and blade all adopt fixed connection, simple structure, and transmission effect is good, and rotatory body drives the synchronous rotating of blade, and the controllability is strong.

Preferably, the cutting diameter data are marked on the circumference of the outer side of the knob body, a triangular prompt mark is arranged on the outer surface of the protective cover close to the knob body, and the cutting diameter data pointed by the triangular prompt mark are the size of the cutting diameter corresponding to the blade when the knob body is screwed to the position.

By adopting the data and the marks, the user can rotate the blade to the position corresponding to the required cutting diameter more conveniently and rapidly, so that the cutting diameter is adjusted more efficiently, conveniently and accurately.

Preferably, the protective cover is provided with a cylindrical mounting shell with a bottom wall, the mounting shell penetrates through the protective cover and is integrally formed with the protective cover, the knob body is in clearance connection with one end, away from the bottom wall, of the mounting shell, the bottom wall is penetrated out of one end, away from the knob body, of the connecting rod, and the mounting table is arranged on the outer side of the bottom wall.

Realize being connected of knob subassembly and protection casing through the installation shell of cylinder, the in-process of beating grass, the knob body is at last, the blade is under, knob body and installation shell gap junction, reduce the friction, it is rotatory to make things convenient for the rotatory body, when irrotational, the one end of installation shell has limiting displacement to the disc of knob body, prevent knob subassembly lapse, the diapire outside is arranged in to the mount table, the diapire also plays limiting displacement, when the protection casing is turned over, knob subassembly also can not lapse, both ends are spacing, knob subassembly can only rotate and can not slide on the protection casing, thereby make the blade change only with beat the radial distance of head of grass, diapire and knob body still have the effect of guiding orientation to the connecting rod simultaneously, make knob subassembly only can rotate in specific range, can not skew rotatory orbit, also can not rock.

As preferred, be equipped with the installation piece on the connecting rod that is close to the knob body, the diapire inboard of installation shell is equipped with the buffer seat, is equipped with the second pressure spring between installation shell and the buffer seat, and second pressure spring one end is fixed on the installation piece, the other end and the buffer seat butt of second pressure spring.

The setting of second pressure spring has the cushioning effect, makes the knob circular installation shell rotatory time elastic and be in, compares in the rigidity contact rotation more light, simultaneously at the in-process of beating grass, along with the removal of machine of beating grass with rock, the installation shell can not take place rigidity collision with the knob body yet.

Preferably, a locking device for locking and positioning the blade is further arranged in the protective cover, and the locking device comprises a groove arranged on the inner wall of the mounting shell and a lug which is arranged in the clamping groove on the knob body and realizes the locking of the knob assembly.

The blade is locked at a required position through the locking device, so that the stability and the safety of the blade are improved, the accuracy of the cutting diameter is ensured, the blade is prevented from being driven to rotate by the high-speed rotation of the rope, the radial distance between the blade and the grass mowing head is changed, and the accuracy of the cutting diameter is influenced; the adopted groove and bump locking device has the advantages of simple structure, easy processing, convenient operation and good locking effect.

Preferably, a horizontal sliding groove is formed in the inner side of the knob body, a sliding block is arranged in the horizontal sliding groove, one end of the sliding block protrudes out of the side wall of the knob body, a first pressure spring is arranged between the other end of the sliding block and the side wall of the groove, a protruding block is arranged at one end, far away from the elastic connecting piece, of the sliding block, and an opening for the protruding block to slide is formed in the position, close to the protruding block, of the.

When the knob assembly needs to be rotated, one end of the sliding block, which protrudes out of the side wall of the knob body, is pressed, the first pressure spring is compressed, the protruding block slides inwards along the opening, the protruding block is separated from the groove, the locking is released, the knob body is rotated clockwise or anticlockwise to drive the blade to rotate, after the blade reaches a required position, the end of the sliding block, which protrudes out of the side wall of the knob body, is loosened, the first pressure spring automatically resets, the protruding block is driven to slide towards the outer ring along the opening, and the first pressure spring is clamped into the.

As preferred, the one end that the slider is close to first pressure spring is equipped with buckle structure, be equipped with on the knob body with buckle structure complex draw-in groove, prevent that the slider from droing from spout and knob body in the outside slip process.

As the preferred, the slider is equipped with the horizontal direction blind hole near first pressure spring department, and the one end of first pressure spring is arranged in the horizontal direction blind hole, and the first pressure spring other end and recess lateral wall butt make first pressure spring compress and stretch out along axial direction, prevent that first pressure spring from supplying to play or popping out from the draw-in groove to radial direction because of the extrusion.

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

[ description of the drawings ]

The utility model is further described with the following drawings:

fig. 1 is a schematic view of the structure of the grass trimmer of the utility model.

Fig. 2 is a schematic perspective view of a protective cover of the utility model.

Fig. 3 is an exploded view of the protective cover of the utility model.

Figure 4 is a partial top view of the utility model shield.

Figure 5 is a sectional view of the utility model mounting housing, knob mechanism and blade assembly.

Fig. 6 is a schematic view of the three-dimensional structure of the knob mechanism with the tool bit of the utility model.

Fig. 7 is a schematic perspective view of the knob mechanism of the utility model for removing the slider.

Fig. 8 is a schematic perspective view of the slider of the present invention.

Fig. 9 is a schematic view of another angle of the slider of the present invention.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, those skilled in the art can obtain other embodiments without creative efforts, and all of them belong to the protection scope of the utility model.

In the following description, the terms such as "inner", "outer", "upper", "lower", "left", "right", etc., which indicate orientations or positional relationships, are used for convenience in describing embodiments and simplifying descriptions, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

Example (b):

as shown in fig. 1 to 9, a grass trimmer with adjustable cutting diameter comprises a grass cutting head 1 and a protective cover 2, wherein a grass cutting rope 3 is arranged in the grass cutting head 1, the end part of the grass cutting rope 3 penetrates out of the side surface of the grass cutting head, a blade 4 for cutting off the penetrating end of the grass cutting rope is arranged on the inner side of the protective cover, the blade 4 rotates in the protective cover 2 to change the radial distance with the grass cutting head 1, the radial distance comprises a first radial distance corresponding to the rotation of the blade 4 to the position closest to the grass cutting head 1 and a second radial distance corresponding to the rotation of the blade 4 to the position farthest from the grass cutting head 1, and the first radial distance is smaller than the second radial distance.

When the cutting diameter need be adjusted in the head of beating grass 1 use, need not with the help of external instrument, the direct position that changes in protection casing 2 through blade 4 internal rotation, thereby change blade 4 and the radial distance of the head of beating grass 1, confirm behind blade 4 position, when the head of beating grass 1 is high-speed rotatory, beat the grass rope 3 and straighten along with the head of beating grass 1 high-speed rotation and under the effect of centrifugal force, it is cut off by blade 4 to rotate to the position department that blade 4 is located beyond the part beyond blade 4, remaining rope 3 of beating grass wear out length can satisfy the needs of cutting diameter, it is convenient to adjust, therefore, the steam generator is simple in operation, blade 4 can all be adjusted apart from the radial distance between the head of beating grass 1 nearest position and the farthest position in the rotation process, the control range is wide, therefore, the clothes hanger is strong in practicability, need not the human body and repeatedly contacts blade 4, and is high.

In order to realize the free rotation of the blade 4 on the protective cover 2, the protective cover 2 is provided with the knob component 5 for driving the blade 4 to rotate, and the blade 4 can rotate clockwise and anticlockwise in the protective cover 2 within 360 degrees, as shown in fig. 2-7, the knob component 5 in the implementation comprises a knob body 51 arranged on the outer side of the protective cover 2, the knob body 51 is arranged on the outer side of the protective cover 2, the operation can be carried out on the outer side of the protective cover 2, the safety is high, even if the grass mower does not need to be stopped in the grass mowing process, the cutting diameter can be changed by rotating the knob body 51, and the adjusting efficiency and the convenience are improved.

In order to enable a user to rotate the blade 4 to a position corresponding to a required cutting diameter more conveniently and rapidly, so that the cutting diameter can be adjusted more efficiently, conveniently and accurately, cutting diameter data (not marked in the figure) are marked on the circumference of the outer side of the knob body 51, a triangular prompt mark (not shown in the figure) is arranged on the outer surface of the protective cover 2 close to the knob body 51, and the cutting diameter data pointed by the triangular prompt mark in the embodiment is the size of the cutting diameter corresponding to the blade 4 when the knob body 51 is rotated to the position.

As shown in fig. 3, 6 and 7, a connecting rod 52 is fixedly arranged on the knob body 51, an installation platform 53 is fixedly arranged at one end of the connecting rod 52 far away from the knob body 51, the blade 4 is fixedly arranged on the installation platform 53, the knob body 51, the connecting rod 52, the installation platform 53 and the blade 4 are fixedly connected, the structure is simple, the transmission effect is good, the blade 4 is driven to synchronously rotate by rotating the knob body 51, the controllability is strong,

in order to install the knob assembly 5 on the protection cover 2, a cylindrical installation shell 21 with a bottom wall is arranged on the protection cover 2, the installation shell 21 penetrates through the protection cover 2 and is integrally formed with the protection cover 2, the knob body 51 is in clearance connection with one end, far away from the bottom wall, of the installation shell 21, one end, far away from the knob body 51, of the connecting rod 52 penetrates out of the bottom wall, the installation platform 53 is arranged on the outer side of the bottom wall, two ends of the cylinder have a limiting effect on the knob body 51 and the installation platform 53, the knob assembly 5 can only rotate on the protection cover 2 and cannot slide, the blade 4 only changes the radial distance with the grass cutting head 1, and meanwhile, the bottom wall and the knob body 51 have a guiding and positioning effect on the connecting rod 52, so that the knob assembly 5 can only rotate within a specific range.

In order to avoid moving and shaking of the grass trimmer in the grass mowing process, as shown in fig. 3, 5 and 6, the mounting shell 21 and the knob body 51 are in rigid collision, the connecting rod 52 close to the knob body 51 is provided with the mounting block 521, the inner side of the bottom wall of the mounting shell 21 is provided with the buffer seat 211, the second pressure spring 8 is arranged between the mounting shell 21 and the buffer seat 211, one end of the second pressure spring 8 is fixed on the mounting block 521, the other end of the second pressure spring 8 is abutted to the buffer seat 211, and the knob body 51 has elasticity when rotating relative to the circular mounting shell 21, so that the knob body is lighter compared with rigid contact rotation.

In order to lock the blade 4 at a desired position, as shown in fig. 5 and 6, a locking device for locking and positioning the blade 4 is further arranged in the protective cover 2, so as to improve the stability and safety of the blade 4, ensure the accuracy of the cutting diameter, prevent the high-speed rotation of the rope from driving the blade 4 to rotate, thereby changing the radial distance between the blade 4 and the grass mowing head 1, thereby affecting the accuracy of the cutting diameter, as shown in fig. 9, the locking device comprises a groove (not shown) arranged on the inner wall of the mounting shell 21 and a lug 61 arranged in a clamping groove on the knob body 51 for realizing the locking of the knob assembly 5, and the adopted groove and lug 61 locking device has simple structure, convenient operation and good locking effect, in the embodiment, a horizontal sliding groove 512 is arranged on the inner side of the knob body 51, a sliding block 6 is arranged in the horizontal sliding groove 512, one end of the sliding block 6 protrudes out of the side wall of, a first pressure spring 7 is arranged between the other end of the sliding block 6 and the side wall of the groove, one end of the sliding block 6, which is far away from the elastic connecting piece, is provided with a convex block 61, an opening for the convex block 61 to slide is arranged at the position, which is close to the convex block 61, of the knob body 51, one end of the sliding block 6, which is close to the first pressure spring 7, is provided with a buckle structure 62, a clamping groove 513 matched with the buckle structure 62 is arranged on the knob body 51, the sliding block 6 is prevented from falling off from the sliding groove and the knob body 51 in the outward sliding process, when the knob assembly 5 needs to be rotated, one end, which protrudes out of the side wall of the knob body 51, of the sliding block 6 is pressed, the first pressure spring 7 is compressed, the convex block 61 slides inwards along the opening to separate from the groove, the locking is released, the knob body 51 is rotated clockwise or anticlockwise to drive the blade 4 to, and is clamped into the groove, so that the knob assembly 5 is locked.

In order to enable the first pressure spring 7 to be compressed or extended along the axial direction, a horizontal guide blind hole 63 is formed in the position, close to the first pressure spring 7, of the sliding block 6, one end of the first pressure spring 7 is arranged in the horizontal guide blind hole 63, the other end of the first pressure spring 7 is abutted to the side wall of the groove, the first pressure spring 7 is compressed and extended along the axial direction, and the first pressure spring 7 is prevented from being pushed up or being ejected out of the clamping groove 513 along the radial direction due to extrusion.

In other embodiments, the locking device is not limited to this, and may be in other locking forms, and any locking function that can achieve the locking function of the knob assembly and the mounting case falls within the scope of the present invention.

The above description is only for the embodiments of the present invention, but the scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the description in the above embodiments and the accompanying drawings. Any modification which does not depart from the functional and structural principles of the invention is intended to be included within the scope of the claims.

Claims

1. The utility model provides a cutting diameter adjustable machine of beating grass, is including beating grass head and protection casing, be equipped with the rope of beating grass in the head of beating grass, beat grass rope tip and wear out the head side of beating grass, its characterized in that is equipped with the blade that cuts off the rope of beating grass and wear out the end of beating grass in the protection casing inboard, and the blade rotates in the protection casing in order to change and the radial distance of the head of beating grass, radial distance includes the blade rotation to the first radial distance that corresponds when the position that is the nearest from the head of beating grass and the second radial distance that the blade rotation corresponds when the position that is the farthest from the head of beating grass, and first radial distance is less than the second radial distance.

2. The trimmer of claim 1, wherein the guard has a knob assembly for rotating the blade.

3. The mowing machine with the adjustable cutting diameter according to claim 2, wherein the knob assembly comprises a knob body arranged outside the protective cover, a connecting rod is fixedly arranged on the knob body, one end, far away from the knob body, of the connecting rod penetrates through the protective cover, a mounting table is fixedly arranged at one end, far away from the knob, of the connecting rod, and the blade is fixedly arranged on the mounting table.

4. The mowing machine with the adjustable cutting diameter according to claim 3, wherein the cutting diameter data is marked on the outer circumference of the knob body, a triangular prompt mark is arranged on the outer surface of the protective cover close to the knob body, and the cutting diameter data pointed by the triangular prompt mark is the size of the cutting diameter corresponding to the blade when the knob body is rotated to the position.

5. The mowing machine with the adjustable cutting diameter according to claim 3, wherein the protective cover is provided with a cylindrical mounting shell with a bottom wall, the mounting shell penetrates through the protective cover and is integrally formed with the protective cover, the knob body is in clearance connection with one end of the mounting shell, which is far away from the bottom wall, one end of the connecting rod, which is far away from the knob body, penetrates through the bottom wall, and the mounting table is arranged on the outer side of the bottom wall.

6. The mowing machine with the adjustable cutting diameter according to claim 5, wherein a mounting block is arranged on the connecting rod close to the knob body, a buffer seat is arranged on the inner side of the bottom wall of the mounting shell, a second pressure spring is arranged between the mounting shell and the buffer seat, one end of the second pressure spring is fixed on the mounting block, and the other end of the second pressure spring is abutted against the buffer seat.

7. A cutting diameter adjustable lawnmower according to claim 5, wherein a locking means is provided within the guard to lock the blade in position, the locking means comprising a groove provided in the inner wall of the mounting housing and a projection provided in a snap-in groove on the knob body to effect locking of the knob assembly.

8. The mowing machine with the adjustable cutting diameter according to claim 7, wherein a horizontal sliding groove is formed in the inner side of the knob body, a sliding block is arranged in the horizontal sliding groove, one end of the sliding block protrudes out of the side wall of the knob body, a first pressure spring is arranged between the other end of the sliding block and the side wall of the groove, a protruding block is arranged at one end, far away from the elastic connecting piece, of the sliding block, and an opening for the protruding block to slide is formed in the position, close to the protruding block, of the knob body.

9. The mowing machine with the adjustable cutting diameter according to claim 8, wherein a buckle structure is arranged at one end of the sliding block close to the first pressure spring, and a clamping groove matched with the buckle structure is arranged on the knob body.

10. The mowing machine with the adjustable cutting diameter according to claim 9, wherein the sliding block is provided with a horizontal guide blind hole near the first pressure spring, one end of the first pressure spring is arranged in the horizontal guide blind hole, and the other end of the first pressure spring abuts against the side wall of the groove.