CN210694967U - Grass trimmer - Google Patents

Abstract

The utility model discloses a grass mower, including beating the grass first subassembly, cleaning head subassembly and control rod, beat the grass first subassembly, clean the head subassembly and be functional head subassembly, each functional head subassembly is changeable to be connected in the terminal drive head subassembly of control rod. The driving head assembly comprises a rotary driving source and a dismounting and mounting unit arranged on the rotary driving source, and the dismounting and mounting unit is used for connecting the functional head assembly so that the rotary driving source drives the functional head assembly to rotate through the dismounting and mounting unit. Through add the cleaning head subassembly in the grass mower, when making this grass mower can realize beating the grass the deburring, still have the function of cleaning, realized the variety of function, can a tractor serves several purposes, the user need not to prepare in addition again and cleans equipment, can carry out gardens nursing work more conveniently.

Description

Grass trimmer

Technical Field

The utility model relates to a gardens nursing tool technical field, in particular to machine of beating grass.

Background

In the garden care work, the grass cutting, trimming, cleaning and other work are involved. However, the conventional grass trimmer has only grass cutting and trimming functions, so that the conventional grass trimmer has relatively few functions, and other equipment needs to be prepared for cleaning and other work, which brings inconvenience to garden care work.

Therefore, how to more conveniently perform garden care work is a technical problem that needs to be solved by those skilled in the art at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a grass trimmer can carry out gardens nursing work more conveniently.

In order to achieve the above object, the utility model provides a following technical scheme:

a grass trimmer comprises a grass trimming head assembly, a cleaning head assembly and an operating rod, wherein the grass trimming head assembly and the cleaning head assembly are both functional head assemblies; each functional head assembly is connected with a driving head assembly at the tail end of the operating rod in a switching mode; the driving head assembly comprises a rotary driving source and a disassembly and assembly unit arranged on the rotary driving source, wherein the disassembly and assembly unit is used for connecting the functional head assembly, so that the rotary driving source drives the functional head assembly to rotate through the disassembly and assembly unit.

Preferably, the detachment and attachment unit includes:

the first connecting structure is arranged on the torque output end of the rotary driving source so as to connect the torque output end of the rotary driving source with the torque input end of the functional head assembly;

and a second connecting structure provided on the housing of the rotary drive source to connect the housing of the rotary drive source with the housing of the functional head assembly.

Preferably, the first connecting structure is a plug-in structure capable of being limited circumferentially.

Preferably, the second connecting structure is a clamping structure to detachably fix the housing of the functional head assembly and the housing of the rotary driving source.

Preferably, the clamping structure comprises a clamping block fixed on the shell of the rotary driving source, a connecting rod structure is hinged on the shell of the functional head assembly, and the connecting rod structure is turned over to be clamped with the clamping block or released from clamping.

Preferably, the cleaning head assembly comprises a cleaning brush head and a speed reducer connected to a torque input end of the cleaning brush head, and the torque input end of the speed reducer is used for being connected with the dismounting and mounting unit.

Preferably, the cleaning brush head is annular, and a central shaft of the cleaning brush head is connected to a torque output end of the speed reducer.

Preferably, the casing of reduction gear is connected with the safety cover, clean brush head radial ascending one side expose in the safety cover, the opposite side is located inside the safety cover.

Preferably, the cutting member of the grass cutting head assembly is provided with a cutting member connecting structure for directly connecting to the detaching and installing unit, so that the rotating speed of the cutting member in the grass cutting head assembly is equal to that of the rotating driving source.

Preferably, the cleaning device further comprises a roller assembly, wherein the roller assembly comprises a roller shaft fixedly connected to the operating rod and a roller rotatably connected to the roller shaft, and the roller is used for being supported on the ground in the trimming state and the cleaning state.

The utility model provides a grass mower, at least, including the grass mowing head assembly, the cleaning head assembly of these two kinds of functional head assemblies, still include the control rod. In the grass cutting state and the trimming state, the grass cutting head assembly is connected with a rotary driving source on the operating rod so as to drive the cutting piece in the grass cutting head assembly to rotate. In the cleaning state, the cleaning head assembly is connected with the rotary driving source.

Through add the cleaning head subassembly in the grass mower, when making this grass mower can realize beating the grass the deburring, still have the function of cleaning, realized the variety of function, can a tractor serves several purposes, make this grass mower collect beat grass, deburring, clean the seam multi-functionally in an organic whole, the user need not to prepare in addition and cleans equipment, can carry out gardens nursing work more conveniently. In addition, because the cleaning head assembly and the grass mowing head assembly are alternately connected to the driving head assembly, the load of a user in a working state can be reduced, and the pressure of the cleaning head assembly and the grass mowing head assembly is not required to be born at the same time. In addition, as the brick joints are narrow, the cleaning head assembly is driven to rotate by the rotary driving source to clean, so that sundries in the brick joints can be effectively taken out, and the cleaning effect on the brick joints is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a side view of the grass trimmer in a grass cutting state;

FIG. 2 is a front view of the grass trimmer in the grass cutting state;

FIG. 3 is an exploded view of the bottom structure of FIG. 2;

FIG. 4 is a first structural diagram of the lawn mower provided by the present invention in the trimming state;

FIG. 5 is a second structural view of the lawn mower in the trimming position;

FIG. 6 is a first structural diagram of the lawn mower in a cleaning state;

FIG. 7 is a second structural view of the lawn mower in a cleaning state;

FIG. 8 is an enlarged bottom view of FIG. 7;

FIG. 9 is an exploded view of a cleaning head assembly of the grass trimmer according to the present invention;

FIG. 10 is a first side view of the cleaning head assembly of the grass trimmer of the present invention;

FIG. 11 is a second side view of the cleaning head assembly of the grass trimmer according to the present invention;

FIG. 12 is a third side structure view of the cleaning head assembly of the grass trimmer of the present invention

FIG. 13 is a structural diagram of the grass trimmer according to the present invention, in the process of connecting the cleaning head assembly and the rotary head assembly, in the state of the latch being engaged with the fixture block;

FIG. 14 is a cross-sectional view of the latch and catch portion of FIG. 13;

FIG. 15 is a structural diagram of the grass trimmer according to the present invention after the lock catch is engaged with the fixture block in the process of connecting the cleaning head assembly and the rotary head assembly;

FIG. 16 is a cross-sectional view of the latch and catch portion of FIG. 15;

FIG. 17 is a partial view of the grass-mowing head assembly of the grass mower according to the present invention;

FIG. 18 is a first structural diagram of a first connecting structure on a rotator head assembly of a grass trimmer according to the present invention;

FIG. 19 is a second structural view of the first connecting structure of the rotary head assembly of the grass trimmer according to the present invention;

FIG. 20 is a structural view of a portion of the cleaning head assembly of the grass trimmer according to the present invention, which is engaged with the first connecting structure;

fig. 21 is a schematic view of the position relationship between the circumferential spacing strip and the circumferential spacing groove when the cleaning head assembly is connected to the first connecting structure in the grass trimmer, and the hatched portion represents the circumferential spacing strip.

In fig. 1 to 21:

1-cleaning head assembly, 11-cleaning brush head, 12-protective cover, 13-reducer gear assembly, 131-input shaft, 14-gear box, 15-connecting block, 151-circumferential limiting strip, 152-inserting projection, 16-lock catch, 17-connecting rod, 18-connecting rod structure, 2-mowing head assembly, 21-cutting member, 22-connecting head, 23-protective cover, 3-roller assembly, 31-roller, 32-roller shaft, 4-operating rod, 41-handle, 42-rod body, 43-rotation driving source, 44-output shaft, 45-positioning groove, 5-first connecting structure, 51-inserting groove, 52-circumferential limiting groove, 6-second connecting structure and 61-clamping block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide a grass trimmer, which can more conveniently carry out garden nursing work.

In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In a specific embodiment of the grass trimmer provided by the present invention, please refer to fig. 1 to 21, including the grass trimmer head assembly 2, the cleaning head assembly 1 and the control rod 4, the grass trimmer head assembly 2 and the cleaning head assembly 1 are two different functional head assemblies, and of course, other functional head assemblies can be further disposed in the grass trimmer.

The tail end of the operating rod 4 is provided with a driving head assembly, and each functional head assembly is connected with the driving head assembly in a switching way, namely, the grass mowing head assembly 2 is connected to the driving head assembly or the cleaning head assembly 1 is connected to the driving head assembly. Specifically, the driving head assembly includes a rotation driving source 43 and a detachment and installation unit provided on the rotation driving source 43, the detachment and installation unit being used to connect the functional head assembly (the grass mowing head assembly 2 or the cleaning head assembly 1) so that the rotation driving source 43 drives the functional head assembly connected thereto to rotate by the detachment and installation unit, that is, the provision of the detachment and installation unit realizes the connection of the functional head assembly and the driving head assembly.

Because the grass mowing head component 2 and the cleaning head component 1 can be connected with the driving head component in a switching way, the grass mowing machine has different working states such as a grass mowing state, a trimming state and a cleaning state, and can complete different functions.

In the grass cutting state and the edging state, the grass cutting head assembly 2 is connected to the rotary drive source 43 by the detachment and attachment unit, so that the cutter 21 in the grass cutting head assembly 2 is driven to rotate by the rotary drive source 43. As shown in fig. 1 and 2, in the grass-mowing state, the rotation center line of the cutting member 21 is substantially perpendicular to the ground, the operating lever 4 is pushed to advance, and at the same time, the cutting member 21 rotates to mow grass; as shown in fig. 4 and 5, in the edging state, the rotation center line of cutter 21 is substantially parallel to the ground, lever 4 is pushed to advance, and at the same time, cutter 21 is rotated to edging. Wherein, the cutting member 21 may be a nylon rope. The rotary drive source is preferably a motor.

In the cleaning state, the cleaning head assembly 1 is connected to the rotary drive source 43 by the detachable attachment unit, so that the rotary drive source 43 drives the cleaning head 11 in the cleaning head assembly 1 to rotate, thereby cleaning the brick joints. Wherein the cleaning brush head 11 is preferably a brush head with a smaller width to better adapt to the width of the brick joint. As shown in fig. 6 to 8, after the cleaning head assembly 1 is connected to the rotary drive source 43, the cleaning head 11 is rotated while the control lever 4 is pushed forward so that the rotation center line of the cleaning head assembly 1 is substantially parallel to the floor surface, thereby cleaning the brick joints.

In this embodiment, through add cleaning head subassembly 1 in the machine of beating grass, when making this machine of beating grass realize beating the grass deburring, still have the function of cleaning, realized the variety of function, the user need not to prepare in addition again and cleans equipment, can carry out gardens nursing work more conveniently. In addition, because the cleaning head assembly 1 and the grass mowing head assembly 2 are alternately connected to the driving head assembly, the load of a user in a working state can be reduced, and the pressure of the cleaning head assembly 1 and the pressure of the grass mowing head assembly 2 do not need to be borne at the same time. In addition, as the brick joints are narrow, the rotary driving source 43 drives the cleaning head assembly 1 to rotate for cleaning, so that sundries in the brick joints can be effectively taken out, and the cleaning effect on the brick joints is good.

Further, the dismounting and mounting unit comprises in particular a first connecting structure 5 and a second connecting structure 6. The first connecting structure 5 is provided at a torque output end of the rotation driving source 43 for connecting the torque output end of the rotation driving source 43 and a torque input end of the functional head assembly. A second connecting structure 6 is provided on the housing of the rotary drive source 43 for connecting the housing of the rotary drive source 43 with the housing of the functional head assembly.

Through the arrangement of the first connecting structure 5 and the second connecting structure 6, the shell and the torque input end of each functional head assembly can be correspondingly connected with the shell and the torque output end of the rotary driving source 43, so that the shell of the functional head assembly cannot greatly shake relative to the shell of the rotary driving source 43 assembly in the process of driving the connected functional head assembly to work by the rotary driving source 43.

Further, first connection structure 5 is for can the spacing grafting structure of circumference to realize that the moment of torsion output of rotary drive source 43 rotates rather than the moment of torsion input end synchronization of last functional head subassembly, and second connection structure 6 is the joint structure, with the casing of the functional head subassembly of detachable fixed joint and rotary drive source 43, makes things convenient for the dismouting of functional head subassembly and rotary drive source 43.

When the cleaning head assembly 1 is connected to the driving head assembly, the torque output end of the rotary driving source 43 outputs torque, and the torque input end of the cleaning head assembly 1 is driven to synchronously rotate through the insertion structure. More specifically, the torque input of the cleaning head assembly 1 may be directly the cleaning brush head 11; alternatively, the cleaning head 11 may be connected to the torque output end of the rotary drive source 43 through a transmission device such as a reducer, and the input end of the transmission device is the torque input end of the cleaning head assembly 1.

As to the specific arrangement manner of the plug-in structure, optionally, as shown in fig. 11 and fig. 18, the plug-in structure may include an output shaft 44 disposed at the torque output end of the rotary drive source 43, a positioning groove 45 having a circumferential limiting capability is disposed in the output shaft 44, the positioning groove 45 having a hexagonal cross section as shown in fig. 18 is correspondingly disposed at the torque input end of the cleaning head assembly 1, the input shaft 131 is in plug-in fit with the positioning groove 45, and a limiting rib extending along the axial direction is disposed on the input shaft 131 to cooperate with the positioning groove 45 to achieve circumferential limiting. After the input shaft 131 is inserted into the positioning groove 45, the input shaft 131 can rotate synchronously with the output shaft 44, so that the torque input end of the cleaning head assembly 1 rotates synchronously with the torque output end of the rotary driving source 43.

The casing of the rotation driving source 43 may be a part that is kept stationary relative to the lever 4. Alternatively, as shown in fig. 8, the latch structure comprises a latch 61 disposed on the housing of the rotary drive source 43, and correspondingly, the housing of the cleaning head assembly 1 is hinged with a link structure 18, and the link structure 18 comprises a link 17 hinged with the housing of the cleaning head assembly 1 and a latch 16 hinged with the link 17. As shown in fig. 13 to 16, in the engaging process, the lock catch 16 is turned over and lapped on the fixture block 61, and then the connecting end of the lock catch 16 and the connecting rod 17 is pushed to swing the connecting rod 17 and the lock catch 16 until the lock catch 16 presses the fixture block 61, so that the lock catch 16 and the fixture block 61 are engaged with each other; the reverse operation enables the latch 16 to be separated from the latch 61. Alternatively still, the linkage arrangement 18 may be provided as a catch 16 hinged directly to the housing of the cleaning head assembly 1.

In addition, a connecting rod structure which is the same as the connecting rod structure can be arranged in the grass mowing head component 2 to realize clamping connection with the clamping block 61.

Obviously, other arrangements of the snap structure are also possible. In another embodiment, the buckle structure comprises a handle, an adjusting seat, a hanging buckle and a handle positioning device, and correspondingly, a locking groove is formed on the shell of the rotary driving source 43. The shell of the cleaning head assembly 1 is hinged to a first end portion of the handle through a first connecting shaft, the middle portion of the handle is connected with the adjusting seat through a second connecting shaft, the adjusting seat is connected with the hanging buckle, and the hanging buckle extends out of the first end portion of the handle. When the second end part of the pull handle is lifted, the pull handle rotates relative to the first connecting shaft and drives the second connecting shaft, the adjusting seat and the hanging buckle to be close to the locking groove. After the hanging buckle and the locking groove are buckled, the second end part of the handle is pressed down, the handle is reset reversely until the handle is positioned on the shell of the rotary driving source 43 by the handle positioning device, so that the handle can not be lifted automatically, and the locking of the hanging buckle and the locking groove is realized.

Wherein, optionally, the pull positioning device comprises a sleeve fixed on the housing of the rotation driving source 43, a compression spring arranged in the sleeve, and a ball extending from a port of the sleeve, the ball is connected to the sleeve by the compression spring, the sleeve is fixed on the housing of the rotation driving source 43, and a certain gap exists between the ball and the housing of the rotation driving source 43. In the handle resetting process, when the ball passes through, the ball can be pressed into the sleeve by the handle, after the handle passes through the ball, the ball resets and pops out under the action of the pressure spring, and the handle is clamped in a gap between the ball and the shell of the rotary driving source 43, so that the handle is limited.

Of course, in other embodiments, the snap structure may be provided as a latch hinged to the housing of the rotary drive source 43, and the corresponding latch may be provided on the housing of the cleaning head assembly 1 and the housing of the grass-mowing head assembly 2.

Preferably, the clamping structure further includes an insertion groove 51 disposed on the housing of the rotary driving source 43, and correspondingly, the housing of the cleaning head assembly 1 is correspondingly provided with an insertion protrusion 152, the insertion protrusion 152 is inserted into and matched with the insertion groove 51, a circumferential limiting groove 52 extending along the axial direction is disposed on the inner circumferential surface of the insertion groove 51, and a circumferential limiting strip 151 inserted into and matched with the circumferential limiting groove 52 is fixedly disposed on the insertion protrusion 152 to realize circumferential limiting. In the process of mounting the cleaning head assembly 1 on the rotary driving source 43, the insertion protrusion 152 is inserted into the insertion groove 51, correspondingly, the circumferential limiting groove 52 and the circumferential limiting strip 151 are matched to position the casing of the cleaning head assembly 1 and the casing of the cleaning head assembly 1 along the circumferential direction, so that the two can not rotate relatively in the circumferential direction, and then the locking operation is performed at the hasp structure, thereby providing convenience for the locking operation of the hasp structure.

More specifically, as shown in fig. 9, the insertion protrusion 152 and the circumferential stopper 151 are integrally formed on the connection block 15, and the connection block 15 is fixedly connected to the housing of the cleaning head assembly 1. Of course, on the grass mowing head assembly 2, the matching limit with the structure of the shell of the rotary driving source 43 can also be realized by arranging the structure same as the connecting block 15.

Through the cooperation of joint structure and grafting structure, can realize the quick assembly disassembly of rotary drive source 43 and grass cutting head subassembly 2 or rotary drive source 43 and cleaning head subassembly 1.

Of course, in other embodiments, the rotary drive source 43 and the cleaning head assembly 1 may be detachably connected by screws or other means.

Further, the cleaning head assembly 1 comprises a cleaning brush head 11 and a speed reducer connected to a torque input end of the cleaning brush head 11, wherein an input end of the speed reducer is used for connecting, detaching and installing units. In the cleaning state, the torque input end of the speed reducer is connected to the torque output end of the rotary driving source 43, and the speed of the speed reducer is reduced to enable the cleaning brush head 11 to meet the requirement of the cleaning rotating speed. As shown in fig. 9, the reducer may specifically include a gear box 14 and a reducer gear assembly 13 disposed in the gear box 14, and in addition, a torque input end of the reducer gear assembly 13 is in plug-in fit with a torque output end of the rotary drive source 43 to rotate synchronously.

Further, as shown in fig. 9 and 10, the cleaning brush head 11 is annular, and the central shaft of the cleaning brush head 11 is connected to the torque output end of the reducer, so that the movement locus of the cleaning brush head 11 can be well adapted.

Of course, in other embodiments, cleaning head 11 may also be square or other shapes.

Further, as shown in fig. 10 and 11, the casing of the decelerator is further connected with a protective cover 12, one side of the cleaning head 11 in the radial direction is exposed to the protective cover 12, and the other side is located inside the protective cover 12. In the cleaning state, the exposed part of the cleaning brush head 11 is positioned at the bottom, and the protective cover 12 is positioned at the upper side, so that the protective effect can be achieved, and the situation that sundries fly to hurt a user is avoided.

Furthermore, the cutting member 21 of the grass cutting head assembly 2 is provided with a cutting member connecting structure for directly connecting to the detachable and mountable unit, i.e. the cutting member 2 is not connected to the driving head assembly through a transmission device such as a reducer, so that the rotating speed of the cutting member 21 in the grass cutting head assembly 2 is equal to that of the rotary driving source 43, thereby meeting the requirements of high rotating speed for grass cutting and edge trimming.

Further, the grass trimmer also comprises a roller assembly 3, the roller assembly 3 comprises a roller shaft 32 fixedly connected to the operating rod 4 and a roller 31 rotatably connected to the roller shaft 32, as shown in fig. 3 to 8, the roller 31 is used for supporting on the ground in the trimming state and the cleaning state, so that the grass trimmer is prevented from turning over in the trimming state and the cleaning state, and the operation is more convenient. Preferably, the rotation center line of the roller 31 is disposed parallel to the output end of the rotation driving source 43.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The grass trimmer provided by the utility model is introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. A grass trimmer is characterized by comprising a grass trimming head assembly (2), a cleaning head assembly (1) and a control lever (4), wherein the grass trimming head assembly (2) and the cleaning head assembly (1) are both functional head assemblies; each functional head assembly is connected with a driving head assembly at the tail end of the operating rod (4) in a switching mode; the driving head assembly comprises a rotary driving source (43) and a dismounting and mounting unit arranged on the rotary driving source (43), wherein the dismounting and mounting unit is used for connecting the functional head assembly, so that the rotary driving source (43) drives the functional head assembly to rotate through the dismounting and mounting unit.

2. A lawnmower according to claim 1, wherein the demountable mounting unit comprises:

a first connecting structure (5) provided on a torque output end of the rotary drive source (43) to connect the torque output end of the rotary drive source (43) with a torque input end of the functional head assembly;

a second connecting structure (6) provided on the housing of the rotary drive source (43) to connect the housing of the rotary drive source (43) with the housing of the functional head assembly.

3. A lawnmower according to claim 2, wherein the first connection structure (5) is a plug-in structure that can be circumferentially limited.

4. A lawnmower according to claim 2, wherein the second connection structure (6) is a snap-fit structure to detachably secure the housing of the functional head assembly and the housing of the rotary drive source (43).

5. A lawnmower according to claim 4, wherein the latch arrangement comprises a latch (61) fixed to the housing of the rotary drive source (43), and the housing of the functional head assembly is hinged to a linkage arrangement (18), the linkage arrangement (18) being arranged to flip over to latch or unlatch the latch (61).

6. A lawnmower according to any one of claims 1 to 5, wherein the cleaning head assembly (1) comprises a cleaning brush head (11) and a reducer connected to a torque input of the cleaning brush head (11), the torque input of the reducer being for connection to the demountable mounting unit.

7. A lawnmower according to claim 6, wherein the cleaning brush head (11) is annular, the central axis of the cleaning brush head (11) being connected to the torque output of the reducer.

8. A lawnmower according to claim 7, wherein the housing of the decelerator is connected to a protective cover (12), one side of the cleaning head (11) in the radial direction being exposed to the protective cover (12), and the other side being located inside the protective cover (12).

9. A lawnmower according to any one of claims 1 to 5, wherein the cutting member (21) of the grass head assembly (2) is provided with a cutting member connection for direct connection to the demountable mounting unit, such that the rotational speed of the cutting member (21) in the grass head assembly (2) is equal to the rotational speed of the rotary drive source (43).

10. A lawnmower according to any one of claims 1 to 5, further comprising a roller assembly (3), the roller assembly (3) comprising a roller shaft (32) fixedly connected to the lever (4) and a roller (31) rotatably connected to the roller shaft (32), the roller (31) being adapted to be supported on the ground in the edging state and in the sweeping state.

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