CN110337888A - A kind of adjustable grass-mowing machine of cutting diameter - Google Patents

Abstract

The invention discloses a kind of adjustable grass-mowing machines of cutting diameter, belong to hand electric garden instrument field, grass-mowing machine includes moving head and shield in the present invention, rope of beating the grass is equipped in moving head, rope end portion of beating the grass is pierced by moving head side, cutting is equipped on the inside of shield to beat the grass the blade of traversing through end of restricting, blade in shield turn to change the radial distance with moving head, the second corresponding radial distance when radial distance the first radial distance and blade turn corresponding when including blade turn to the position nearest from moving head to the position farthest from moving head, first radial distance is less than the second radial distance, adjusting of the blade of the grass-mowing machine on shield is more convenient, without the i.e. changeable cutting diameter of removal of inserts, adjustable range is wide, it is practical, blade is contacted repeatedly without human body, it is highly-safe.

Description

A kind of adjustable grass-mowing machine of cutting diameter

[technical field]

Invention is related to hand electric garden instrument, and in particular to a kind of adjustable grass-mowing machine of cutting diameter.

[background technique]

Grass-mowing machine is the hand-held tool for the weeds in the place such as cutting lawns, garden, pasture, the use of grass-mowing machine The labor intensity for reducing weeding worker improves weeding ratio, and harvesting is clean, laying is neat, the moving head point of grass-mowing machine For blade and two kinds of rope of beating the grass, the cutting force degree of blade is stronger, is more suitable for cutting sturdy shrub etc., and cutting edge of a knife or a sword at knife-blade Benefit is easy to damage user, and volume is heavy, and the scope of application is small, is more suitable for using in open environment, for difference Use occasion, need to re-replace various sizes of blade, troublesome in poeration, cord type of beating the grass grass-mowing machine has been restricted by exposed beat the grass Lighter at cutting, rope of beating the grass will not damage user, highly-safe, after exposed fracture of rope of beating the grass, need to only put Internal new rope of beating the grass out, easy to operate, the use scope of cord type of beating the grass grass-mowing machine is wide, and flexibility ratio is high, need to only change and beat Straw rope protruded length changes cutting diameter, makes it is suitable for different environment, in addition to open environment, to flower bed, tree bottom, stone Rank, edge, corner, dead angle are applicable, and change rope leakage length of beating the grass is beaten in rotation process by being mounted on beating the grass to restrict Double-edged blade cutting of opening on careless machine shield is completed, therefore cutting diameter is determined by position of the blade on protective cover of lawn mower , change the cutting diameter of grass-mowing machine by changing position of the blade on shield, is at present locked blade by screw It being fixed on shield, when needing to adjust cutting diameter, screw under spiral shell removes blade, after moving on to new position, then screw again Blade is locked, need by tool complete repeated disassembled and assembled, adjust it is cumbersome, take time and effort, and improve hurt can It can property.

[summary of the invention]

The technical problems to be solved by the invention are how to make adjusting of the blade on shield more convenient, do not have to disassembly The i.e. changeable cutting diameter of blade.

Above-mentioned technical problem is solved, invention adopts the following technical scheme that a kind of adjustable grass-mowing machine of cutting diameter, including beats Toothed burclover and shield, the moving head is interior to be equipped with rope of beating the grass, and the rope end portion of beating the grass is pierced by moving head side, which is characterized in that Cutting is equipped on the inside of shield to beat the grass the blade of traversing through end of restricting, blade in shield turn to change the radial direction with moving head Distance, the radial distance the first radial distance and blade corresponding when including blade turn to the position nearest from moving head The second corresponding radial distance when turn to the position farthest from moving head, the first radial distance is less than the second radial distance.

Using advantageous effect of the invention:

When needing to adjust cutting diameter in moving head use process, without extraneous tool, directly existed by blade The position that rotation changes in shield in shield determines blade position to change the radial distance of blade and moving head It postpones, when moving head high speed rotation, rope of beating the grass is with moving head high speed rotation and stretches under the influence of centrifugal force, rotation to blade It is cut off beyond the part other than blade by blade at the position at place, remaining rope of beating the grass, which is pierced by length, can meet cutting diameter Needs, adjust it is convenient, easy to operate, blade is in the diameter in rotary course between moving head proximal most position and highest distance position Adjustable to distance, adjustable range is wide, practical, contacts blade repeatedly without human body, highly-safe.

Preferably, being equipped with the knob assembly with cutting blade turn on shield, knife is realized by rotation knob assembly 360 degree clockwise and anticlockwise turns of the piece in shield, structure is simple, and turn range is big, strong flexibility.

Preferably, the knob assembly includes the knob body being located on the outside of shield, fixation is set in knob body Have a connecting rod, the connecting rod passes through shield far from one end of knob body, the connecting rod far from knob body one End is fixed with erecting bed, and the blade fixation is located on erecting bed.

Knob body is placed on the outside of shield, is operated on the outside of shield, highly-safe, even if during beating the grass The grass-mowing machine that do not need to stop can also change cutting diameter by turn knobs ontology, improve and adjust efficiency and convenience, knob Ontology, connecting rod, erecting bed are all made of with blade and are fixedly connected, and structure is simple, and transmission effect is good, and rotating body band cutting blade is same Turn is walked, controllability is strong.

Preferably, cutting diameter data are indicated in knob body outer circumference, in protection cover outer surface close to knob Triangle prompt mark is equipped at ontology, the cutting diameter data that triangle prompt mark is directed toward are that knob body is threaded to this position When blade corresponding to cutting diameter size.

Using above-mentioned data and mark, user can be more convenient and rapidly that blade turn is straight to required cutting On the corresponding position of diameter, adjust cutting diameter more efficient, convenient, accurate.

Preferably, shield be equipped with the columnar mounting shell with bottom wall, mounting shell pass through shield and with protection Cover is integrally formed, and knob body and mounting shell are connected far from a splaying of bottom wall, and connecting rod is worn far from one end of knob body Bottom wall out, the erecting bed are placed in bottom wall outer.

The connection that knob assembly and shield are realized by columnar mounting shell, during beating the grass, knob body upper, Under, knob body is connect blade with mounting shell gap, reduces friction, rotating body is facilitated to rotate, when not rotating, mounting shell One end has position-limiting action to the disk of knob body, prevents knob assembly slide downward, erecting bed is placed in bottom wall outer, bottom wall Also function to position-limiting action, when shield turns over, knob assembly will not slide downward, both ends limit, knob assembly is anti- On shield can only turn and cannot slide, thus the only radial distance with moving head for changing blade, while bottom wall and rotation Button ontology also has the function of guide-localization to connecting rod, rotate knob assembly can only in particular range, does not deviate by rotation Transition mark, will not shake.

Preferably, the connecting rod close to knob body is equipped with mounting blocks, the inside bottom wall of mounting shell is equipped with buffing pad, The second pressure spring is equipped between mounting shell and buffing pad, second pressure spring one end is fixed on mounting blocks, the other end of the second pressure spring with Buffing pad abuts.

The setting of second pressure spring have buffer function, make knob opposing circular mounting shell rotate when it is elastic, compared to Rigid contact rotate it is lighter, while during beating the grass, with the movement and shaking of grass-mowing machine, mounting shell and knob Rigid collision will not occur for ontology.

Preferably, being additionally provided in shield by the locking device of blade locking positioning, the locking device includes setting It groove on mounting shell inner wall and is located in knob body and being caught in the convex block for realizing knob assembly locking in groove.

Blade is locked on required position by locking device, improves the stability and safety of blade, it is ensured that cut The accuracy for cutting diameter, prevents the high speed rotation band cutting blade turn of rope, thus change the radial distance of blade and moving head, To influence the accuracy of cutting diameter；The groove and convex block locking device of use, structure is simple, easy to process, convenient for operating, Locking effect is good.

Preferably, being equipped with horizontal concrete chute on the inside of knob body, sliding block, one end of sliding block are equipped in the horizontal concrete chute Outside this body sidewall of highlight knob, the first pressure spring, separate elasticity on sliding block are equipped between the other end and recess sidewall of the sliding block One end of connector is equipped with convex block, and knob body is equipped with the opening slided for convex block at convex block.

When needing to rotate knob assembly, one end outside this body sidewall of sliding block highlight knob is pinned, compresses the first pressure spring, convex block Along opening slid inward, it is detached from groove, is unlocked, clockwise or counterclockwise knob body, band cutting blade turn, blade Behind position needed for reaching, one end outside this body sidewall of sliding block highlight knob is unclamped, the first pressure spring automatically resets, and convex block edge is driven to open Mouth is slided to outer ring, is caught in groove, is realized the locking of knob assembly.

Preferably, sliding block is equipped with buckle structure close to one end of the first pressure spring, knob body is equipped with and buckle structure The card slot of cooperation, anti-limited slip block fall off from sliding slot and knob body during sliding in and out.

Preferably, sliding block is equipped with horizontally-guided blind hole at the first pressure spring, one end of the first pressure spring is placed in level and leads Into blind hole, the first pressure spring other end is abutted with recess sidewall, so that the first pressure spring is in axial direction compressed and is stretched out, is prevented first Pressure spring is since squeezing action has been supplied to radial direction or is popped up from card slot.

These features and advantages of invention will the detailed exposure in following specific embodiment, attached drawing.

[Detailed description of the invention]

Invention is described further with reference to the accompanying drawing:

Fig. 1 is invention grass-mowing machine structural schematic diagram.

Fig. 2 is invention shield part isometric structural schematic diagram.

Fig. 3 is invention shield part isometric structural decomposition diagram.

Fig. 4 is invention shield top partial view diagram.

Fig. 5 is invention mounting shell, Knob mechanisms and blade assembling view.

Fig. 6 is the Knob mechanisms schematic perspective view that invention is equipped with cutter head.

Fig. 7 is the Knob mechanisms schematic perspective view of invention removal sliding block.

Fig. 8 is invention sliding block schematic perspective view.

Fig. 9 is another angle schematic perspective view of invention sliding block.

[specific embodiment]

The technical solution of inventive embodiments is explained and illustrated below with reference to the attached drawing of inventive embodiments, but following realities Applying example is only the preferred embodiment invented, and not all.Based on the implementation example in the implementation mode, those skilled in the art are not having Obtained other embodiments under the premise of creative work are made, the protection scope of invention is belonged to.

In the following description, occur term "inner", "outside", "upper", "lower", the indicating positions such as "left", "right" or Positional relationship, description embodiment merely for convenience and simplified description, rather than the device or member of indication or suggestion meaning Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to invention.

Embodiment:

As shown in Figures 1 to 9, the adjustable grass-mowing machine of a kind of cutting diameter, including moving head 1 and shield 2, moving head 1 Interior be equipped with is beaten the grass rope 3, and 3 ends of rope of beating the grass are pierced by moving head side, and cutting is equipped on the inside of shield and is beaten the grass the knife of traversing through end of restricting Piece 4, to change the radial distance with moving head 1, radial distance includes 4 turn of blade to from beating to blade 4 for turn in shield 2 It is corresponding when corresponding the first radial distance and 4 turn of blade to the position farthest from moving head 1 when the nearest position of toothed burclover 1 The second radial distance, the first radial distance is less than the second radial distance.

When needing to adjust cutting diameter in 1 use process of moving head, without extraneous tool, directly pass through blade 4 The position that rotation changes in shield 2 in shield 2 determines to change the radial distance of blade 4 Yu moving head 1 Behind 4 position of blade, when 1 high speed rotation of moving head, rope 3 of beating the grass is with 1 high speed rotation of moving head and stretches under the influence of centrifugal force Directly, it is cut off beyond the part other than blade 4 by blade 4 at the position where rotation to blade 4, remaining rope 3 of beating the grass is pierced by length Degree can meet the needs of cutting diameter, and it is convenient to adjust, and easy to operate, blade 4 is in rotary course apart from the most peri position of moving head 1 The radial distance set between highest distance position is adjustable, and adjustable range is wide, practical, contacts blade 4 repeatedly without human body, It is highly-safe.

In order to realize free turn of the blade 4 on shield 2, the knob with 4 turn of cutting blade is equipped on shield 2 Component 5 realizes 360 degree clockwise and anticlockwise turns of the blade 4 in shield 2, as shown in Figure 2 to 7, in this implementation In knob assembly 5 include the knob body 51 for being located at the outside of shield 2, knob body 51 is placed in 2 outside of shield, is protecting 2 outside operation of cover, highly-safe, not needing to stop grass-mowing machine even if during beating the grass can also be by turn knobs ontology 51 change cutting diameter, improve and adjust efficiency and convenience.

In order to which user can be more convenient and rapidly by 4 turn of blade to the required corresponding position of cutting diameter On, it adjusts cutting diameter more efficient, convenient, accurate, cutting diameter data (figure is indicated in 51 outer circumference of knob body In do not indicate), 2 outer surface of shield at knob body 51 be equipped with triangle prompt mark (not shown), this The cutting diameter data that embodiment intermediate cam shape prompt mark is directed toward are that knob body 51 is threaded to when this position corresponding to blade 4 The size of cutting diameter.

As shown in Fig. 3, Fig. 6 and Fig. 7, connecting rod 52 is fixed in knob body 51, connecting rod 52 is far from knob sheet One end of body 51 is fixed with erecting bed 53, and the fixation of blade 4 is located on erecting bed 53, knob body 51, connecting rod 52, erecting bed 53 are all made of with blade 4 and are fixedly connected, and structure is simple, and transmission effect is good, rotation knob body 51 with the synchronous turn of cutting blade 4, Controllability is strong,

In order to which knob assembly 5 to be mounted on shield 2, shield 2 is equipped with the columnar mounting shell 21 with bottom wall, Mounting shell 21 passes through shield 2 and is integrally formed with shield 2, knob body 51 and a splaying of the mounting shell 21 far from bottom wall Connection, connecting rod 52 are pierced by bottom wall far from one end of knob body 51, and erecting bed 53 is placed in bottom wall outer, columnar both ends pair Knob body 51 and erecting bed 53 have position-limiting action, make knob assembly 5 on shield 2 can only turn and cannot slide, from And the only radial distance with moving head 1 for changing blade 4, while bottom wall and knob body 51 also have connecting rod 52 and lead To the effect of positioning, it rotate knob assembly 5 can only in particular range, do not deviate by rotational trajectory, will not shake.

In order to avoid during beating the grass, with the movement and shaking of grass-mowing machine, as shown in Figure 3, Figure 5 and Figure 6, mounting shell 21 occur rigid collision with knob body 51, and the connecting rod 52 close to knob body 51 is equipped with mounting blocks 521, mounting shell 21 Inside bottom wall is equipped with buffing pad 211, the second pressure spring 8 is equipped between mounting shell 21 and buffing pad 211,8 one end of the second pressure spring is fixed On mounting blocks 521, the other end of the second pressure spring 8 is abutted with buffing pad 211, the rotation of 51 opposing circular mounting shell 21 of knob body When elastic rotated compared to rigid contact lighter.

In order to be locked in blade 4 at desired position, as shown in Figure 5 and Figure 6, it is additionally provided in shield 2 by knife The locking device of the locking positioning of piece 4, improves the stability and safety of blade 4, it is ensured that the accuracy of cutting diameter prevents from restricting High speed rotation band 4 turn of cutting blade of son, to change the radial distance of blade 4 Yu moving head 1, to influence cutting diameter Accuracy, as shown in figure 9, locking device includes the groove (not shown) being located on 21 inner wall of mounting shell and is located at knob sheet The convex block 61 for realizing that knob assembly 5 locks in groove, 61 locking device of groove and convex block of use, structure letter are caught on body 51 Single, convenient for operation, locking effect is good, in the present embodiment, horizontal concrete chute 512, horizontal concrete chute is equipped on the inside of knob body 51 It is equipped with sliding block 6 in 512, outside 51 side wall of one end highlight knob ontology of sliding block 6, is set between the other end and recess sidewall of sliding block 6 There is the first pressure spring 7, one end far from flexible connector is equipped with convex block 61 on sliding block 6, and knob body 51 is equipped at convex block 61 For convex block 61 slide opening, sliding block 6 close to one end of the first pressure spring 7 be equipped with buckle structure 62, knob body 51 be equipped with The card slot 513 that buckle structure 62 cooperates, anti-limited slip block 6 fall off from sliding slot and knob body 51 during sliding in and out, need When rotating knob assembly 5, one end outside 6 highlight knob ontology of sliding block, 51 side wall being pinned, compressing the first pressure spring 7, convex block 61 is along opening Mouth slid inward, is detached from groove, unlocks, clockwise or counterclockwise knob body 51, band 4 turn of cutting blade, blade 4 Behind position needed for reaching, one end outside 6 highlight knob ontology of sliding block, 51 side wall is unclamped, the first pressure spring 7 automatically resets, and drives convex block 61 slide along outward opening circle, are caught in groove, realize the locking of knob assembly 5.

In order to make the first pressure spring 7 in axial direction compress or stretch out, sliding block 6 is equipped with horizontally-guided at the first pressure spring 7 One end of blind hole 63, the first pressure spring 7 is placed in horizontally-guided blind hole 63, and 7 other end of the first pressure spring is abutted with recess sidewall, makes One pressure spring 7 is in axial direction compressed and is stretched out, and prevents the first pressure spring 7 since squeezing action has been supplied to radial direction or from card slot It is popped up in 513.

It should be noted that in other embodiments, locking device is not limited thereto, it can also be other locking shapes Formula is each fallen in the protection scope of invention as long as being that by the lock function of knob assembly and mounting shell.

The above, the specific embodiment only invented, but the protection scope invented is not limited thereto, and is familiar with this The technical staff in field should be understood that invention including but not limited to attached drawing and above content described in specific embodiment.It is any Modification without departing from the function and structure principle of invention is intended to be included in the range of claims.

Claims (10)

1. a kind of adjustable grass-mowing machine of cutting diameter, including moving head and shield, the moving head is interior to be equipped with rope of beating the grass, beat the grass Rope end portion is pierced by moving head side, which is characterized in that is equipped with cutting on the inside of shield and beats the grass the blade of traversing through end of restricting, blade exists To change the radial distance with moving head, the radial distance includes blade turn to recently from moving head for turn in shield When position when the first corresponding radial distance and blade turn to the position farthest from moving head corresponding second it is radial away from From the first radial distance is less than the second radial distance.

2. the adjustable grass-mowing machine of cutting diameter according to claim 1, which is characterized in that be equipped with band moving knife on shield The knob assembly of piece turn.

3. the adjustable grass-mowing machine of cutting diameter according to claim 2, which is characterized in that the knob assembly includes being located at Knob body on the outside of shield is fixed with connecting rod, the one end of the connecting rod far from knob body in knob body Across shield, it is fixed with erecting bed far from one end of knob in the connecting rod, the blade fixation is located on erecting bed.

4. the adjustable grass-mowing machine of cutting diameter according to claim 3, which is characterized in that in knob body outer circumference On indicate cutting diameter data, protection cover outer surface at knob body be equipped with triangle prompt mark, triangle prompt The cutting diameter data that mark is directed toward are the size that knob body is threaded to cutting diameter corresponding to blade when this position.

5. the adjustable grass-mowing machine of cutting diameter according to claim 3, which is characterized in that shield is equipped with bottom wall Columnar mounting shell, mounting shell pass through shield and are integrally formed with shield, and knob body and mounting shell are far from bottom wall The connection of one splaying, connecting rod are pierced by bottom wall far from one end of knob body, and the erecting bed is placed in bottom wall outer.

6. the adjustable grass-mowing machine of cutting diameter according to claim 5, which is characterized in that close to the connecting rod of knob body Mounting blocks are equipped with, the inside bottom wall of mounting shell is equipped with buffing pad, and the second pressure spring, the second pressure are equipped between mounting shell and buffing pad Spring one end is fixed on mounting blocks, and the other end of the second pressure spring is abutted with buffing pad.

7. the adjustable grass-mowing machine of cutting diameter according to claim 5, which is characterized in that be additionally provided in shield by knife The locking device of piece locking positioning, the locking device include the groove being located on mounting shell inner wall and are located in knob body It is caught in the convex block that knob assembly locking is realized in groove.

8. the adjustable grass-mowing machine of cutting diameter according to claim 7, which is characterized in that be equipped with water on the inside of knob body Smooth slot, is equipped with sliding block in the horizontal concrete chute, outside this body sidewall of one end highlight knob of sliding block, the other end of the sliding block with The first pressure spring is equipped between recess sidewall, one end far from flexible connector is equipped with convex block on sliding block, and knob body is close to convex block Place is equipped with the opening slided for convex block.

9. the adjustable grass-mowing machine of cutting diameter according to claim 8, which is characterized in that sliding block close to the first pressure spring one End is equipped with buckle structure, and knob body is equipped with the card slot cooperated with buckle structure.

10. the adjustable grass-mowing machine of cutting diameter according to claim 9, which is characterized in that sliding block is at the first pressure spring Equipped with horizontally-guided blind hole, one end of the first pressure spring is placed in horizontally-guided blind hole, and the first pressure spring other end is supported with recess sidewall It connects.