WO2016041102A1

WO2016041102A1 - Grass-removing plate for grass cutter

Info

Publication number: WO2016041102A1
Application number: PCT/CN2014/000986
Authority: WO
Inventors: 华杰; 华世民
Original assignee: 华杰; 华世民
Priority date: 2014-09-19
Filing date: 2014-11-10
Publication date: 2016-03-24
Also published as: CN104221579A; CN104221579B

Abstract

A grass-removing plate for a grass cutter, the grass-removing plate comprising a main body, grass-trimming cords (3) being connected on the main body, grass-trimming cord connection structures used for connecting and fixing the grass-trimming cords being arranged on the main body. A grass-trimming cord connection structure comprises: a grass-trimming cord threading hole (13) arranged on an outer wall of the main body; a swinging piece (7), a bottom portion thereof being arranged in the main body and being arced, the arced bottom portion being provided with a plurality of press-teeth (72); a rotary shaft (8), fixedly arranged inside the main body, the rotary shaft (8) being connected to a central portion of the swinging piece (7), the swinging piece (7) rotating around the rotary shaft; a torsion spring (9), penetratingly arranged on the rotary shaft, a first free end abutting against an inner wall of the main body, a second free end being penetratingly arranged on the swinging piece (7), thereby inhibiting the swinging piece (7) from rotating along the rotary shaft (8). The grass-trimming cord connection structures have the advantages that the structures are simple and that grass-cutting cords can be conveniently installed and replaced.

Description

Mower for lawn mower

Technical field

The invention relates to a weeding disc for a lawn mower.

Background technique

The herbicidal discs of the existing lawn mower are mostly composed of a turntable and a weeding cord wound around the turntable. The center of the turntable is provided with an assembly hole for connecting with the power output end of the lawn mower, and the turntable can be mowing. The power mechanism of the machine is driven to rotate at a high speed, and the inside of the turntable is provided with a coiled shaft of the weeding cord. The outer wall of the turntable is provided with a stringing hole. The weeding cord is directly wound clockwise from the front end to the spool of the disc, and finally weeding. The front end and the end of the rope are placed at a proper length through the stringing hole of the turntable to be exposed outside the turntable. Under the high-speed rotation of the turntable, the weeding rope is driven to rotate at a high speed, thereby achieving the purpose of weeding.

However, this method of coiling often causes the length of the weeding cords exposed at both ends of the turntable to be unequal in length, thereby reducing the ability of weeding: the weeding cord is easily separated during the weeding process under the high-speed rotation of the turntable. Or cut, when the weeding rope in the turntable is used up, it is impossible or difficult to replace the new weeding rope.

Summary of the invention

The technical problem to be solved by the present invention is to provide a lawn mower for a lawn mower having a simple structure and at the same time being very convenient and very simple to install and replace a mowing cord.

The technical solution adopted by the present invention to solve the above technical problem is: a lawn mower for a lawn mower comprising a body, a straw rope connected to the body, and a first body disposed on the body for connecting and fixing the grass rope The grass rope connecting structure is characterized in that: the first straw connecting structure comprises:

a first straw threading hole disposed on the outer wall of the body;

a rocking member, a bottom of the rocking member is disposed in the body, and a bottom portion of the rocking member is arc-shaped, and a curved bottom portion of the rocking member is provided with a plurality of pressing teeth;

a first rotating shaft fixedly disposed inside the body, the first rotating shaft is coupled to the middle portion of the rocking member, and the rocking member is rotatable around the first rotating shaft under the external force by the bottom portion thereof;

a torsion spring, the torsion spring is disposed on the first rotating shaft, the first free end of the torsion spring is opposite to the inner wall, and the second free end of the torsion spring is disposed on the rocking member, so that the torsion spring can inhibit the swinging member A shaft rotates.

As an improvement, the body includes an inner hollow circular base and an upper cover fixed to the circular base, and the first straw threading hole is disposed on the outer circumference of the circular base.

Further, the circular base is provided with a first concave turntable for setting the first rotating shaft, and the first rotating shaft is disposed in the first concave rotating table and then fixed by the upper cover, the torsion spring The first free end is opposite the first concave turntable.

Further improved, the top of the rocking member is provided with a convex portion, and the upper cover is provided with a through hole, and the convex portion is disposed through the through hole of the upper cover and exposed to the upper cover.

Further improved, the body is provided with two sets of the first grass rope connecting structures, and is symmetrically distributed on the body at 180 degrees.

The first straw connection structure of the above structure can be used to connect a single single strand of straw.

The herbicidal disc for lawn mower provided by the invention can also be connected with the double-stranded straw rope which is fixed and bent, and is also very convenient to be installed and replaced. The specific structure is that the body comprises a circular base with a hollow inside, and is fixed. The upper cover on the circular base, the body is further provided with a second grass rope connection structure for connecting and fixing the grass rope, the second grass rope connection structure comprises;

a second straw threading hole is disposed on the upper cover, and the second straw threading hole allows the double-strand straw rope to be bent after passing;

a connecting rod, the first end of the connecting rod is located in the circular base, the first end of the connecting rod is a free end, the upper cover is provided with a strip-shaped perforation, and the second end of the connecting rod is movably worn The inner opening portion of the strip-shaped perforation is exposed outside the body, and the second straw threading hole is connected with the strip-shaped perforation, and the bent double-strand straw rope passes through the second grass After the rope threading hole, the bent portion of the straw rope can be sleeved on the second end of the connecting rod;

a second rotating shaft is disposed in the circular base, and the second rotating shaft is coupled to a middle portion of the connecting rod, and the connecting rod is rotatable around the second rotating shaft by an external force at a free end thereof;

a compression spring disposed in the circular base, the first end of the compression spring abutting against the inner wall of the circular base, and the second end of the compression spring abuts the first end of the connecting rod.

The upper cover is provided with an outwardly convex boss, and the second straw threading hole is disposed on the boss.

The inner wall of the second straw threading hole is provided with a track groove matched with the grass rope; the boss is provided with a second end corresponding to the strip hole to allow the connecting rod to be The movable groove of the freely rotating inner groove is also disposed at an outer peripheral edge of the second straw threading hole, and the outlet position of the movable groove on the boss is disposed toward the center of the body.

a second concave turntable for arranging the second rotating shaft is disposed in the circular base, and a receiving groove for accommodating the elastic member is disposed under the second concave rotating table; the first end of the connecting rod is provided with a connecting post, The first end of the compression spring abuts against the inner wall of the receiving groove, and the second end of the compression spring passes through the connecting post of the first end of the connecting rod to abut the first end of the connecting rod.

The second end of the connecting rod has a circular arc shape, and the body is provided with two sets of the aforementioned second straw connecting structures, and is symmetrically distributed on the body at 180 degrees.

Compared with the prior art, the invention has the advantages that the first grass connecting rope structure provided by the invention has a simple structure. Single, can be used to connect fixed single-strand straw ropes, and it is very convenient to install and replace mowing ropes. In addition, the second straw connecting structure provided by the invention can also be connected to fix the double-stranded straw rope after bending.

DRAWINGS

1 is a schematic perspective view of a herbicidal disc for a lawn mower according to a first embodiment of the present invention.

FIG. 2 is a schematic perspective view showing the three-dimensional structure of the lawn mower with the upper cover removed by the lawn mower according to the first embodiment of the present invention.

3 is an exploded view of the first straw connecting structure in the first embodiment of the present invention.

4 is a schematic perspective view showing the structure of a weeding disc for a lawn mower according to a second embodiment of the present invention.

Fig. 5 is an exploded perspective view showing a weeding disc for a lawn mower according to a second embodiment of the present invention.

Figure 6 is a perspective exploded view of another embodiment of the lawn mower for a lawn mower according to a second embodiment of the present invention.

Figure 7 is an exploded view of the second straw connecting structure in the second embodiment of the present invention.

detailed description

The invention will be further described in detail below with reference to the embodiments of the drawings.

Embodiment 1

As shown in FIG. 1 to FIG. 3, in the first embodiment of the present invention, the lawn mower for the lawn mower includes a body composed of an inner hollow circular base 1 and an upper cover 2 fixed on the circular base, and is connected thereto. a straw rope 3 on the body and a first grass rope connection structure disposed on the body for connecting and fixing the grass rope;

A shaft hole A connected to the output shaft of the external power mechanism is disposed in the middle of the body.

The first straw connecting structure comprises:

a first straw threading hole 13 disposed on the circular base 1;

The rocking member 7 is provided with a convex portion 71 at the top of the rocking member 7, and the upper cover 2 is provided with a through hole 26, and the convex portion 71 is disposed through the through hole 26 of the upper cover and exposed to the upper cover. The bottom of the rocking member is arranged in an arc shape, and the curved bottom portion of the rocking member is provided with a plurality of pressing teeth 72;

a first rotating shaft 8 disposed inside the circular base, the first rotating shaft 8 is disposed in a middle portion of the rocking member 7, and the rocking member 7 is rotatable around the first rotating shaft 8 by an external force at the bottom thereof; and the circular shape a first concave turret 14 for arranging the first rotating shaft 8 is disposed in the base, and the two ends of the first rotating shaft 8 are disposed in the first concave turret 14 and then fixed by the upper cover 2;

a torsion spring 9 is disposed on the first rotating shaft 8, the first free end of the torsion spring 9 is opposite to the first concave turntable 14, and the second free end of the torsion spring is disposed on the rocking member 7, thereby The torsion spring can suppress the rotation of the rocking member along the first rotating shaft 8.

The body is provided with two sets of the aforementioned first grass rope connecting structures, and is symmetrically distributed on the body at 180 degrees.

The first straw connecting structure in this embodiment can be used for connecting and fixing a single-strand straw rope. The process and principle of installing or replacing the straw rope are as follows:

One end of a single-strand straw 3 of a required length is inserted from the entrance of the first straw threading hole 13 on the circular base 1, and the end of the single-strand straw 3 is pressed against the swinging member. At the bottom of the bottom portion 7, the bottom portion of the rocking member 7 is pressed by the end portion of the straw rope 3, and is rotated around the first rotating shaft 8. At this time, the torsion spring 9 which is passed through the first rotating shaft 8 is pressed by the torsion force to generate a reverse direction. The force, and under the reverse resilience of the torsion spring 9, the bottom pressing teeth 72 of the rocking member 7 will tightly engage the end of the straw 3;

In order to make the connection of the straw rope 3 more secure, the grass rope can be applied to the boss portion 71 at the top of the rocking member 7 by the external force during the penetration of the grass rope into the first straw threading hole 13, so that the grass rope end is made. The portion can smoothly penetrate the first straw threading hole 13, and when the external force is released from the boss 71 on the top of the rocking member 7, under the action of the upper cover and the torsion spring 9, the bottom pressing gear 72 of the rocking member 7 will The end of the straw rope 3 is firmly engaged, thereby fixing the single-strand straw rope to the body.

When the straw 3 is replaced, it is only necessary to apply an external force to the boss 71 on the top of the rocking member 7, to rotate the rocking member, and the end portion of the straw 3 is no longer engaged by the bottom pressing teeth 72 of the rocking member 7. , the straw rope 3 is taken out from the first straw threading hole 13 and then replaced with a new straw rope.

Embodiment 2

As shown in FIG. 4 to FIG. 7 , which is a second embodiment of the present invention, the embodiment is different from the first embodiment in that a second grass rope for connecting and fixing a single straw rope is further disposed on the body. The connecting structure, the second straw connecting structure comprises:

a second straw threading hole 22 is disposed on the upper cover 2, and the second straw threading hole 22 can allow the double-strand straw rope to pass through, and the specific structure is that the upper cover 2 is provided with an outward a raised boss 21, the second straw threading hole 22 is laterally disposed on the boss 21, and an entrance position of the second straw stringing hole 22 is disposed toward the outer circumference of the body, and the second grass is The inner wall of the stringing threaded hole 22 is provided with a track groove 23 which cooperates with the grassing rope. The upper cover 2 is provided with a strip-shaped perforation 24 communicating with the second grassing stringing hole 22, and the boss 21 is provided with a strip shape. The movable slot 25 corresponding to the through hole 24, the outlet position of the movable slot 25 is disposed toward the center of the circular base 1;

a connecting rod 4, the first end 41 of the connecting rod 4 is located inside the circular base 1, the second end 42 of the connecting rod 4 is a free end, and the second end 42 of the connecting rod has a circular arc shape, and the connecting rod The second end 42 of the movable portion 4 is disposed in the strip-shaped perforation 24 and partially exposed outside the upper cover 2, and the second straw threading hole 22 communicates with the strip-shaped perforation 24, and the double-stranded after bending After the straw rope 3 passes through the second straw threading hole 22, the bent portion of the straw rope 3 can be sleeved on the second end 42 of the connecting rod 4; and the second end 42 of the connecting rod 4 can also be in the foregoing The movable groove 25 on the boss 21 is freely rotatable, and the height of the second end 42 of the connecting rod 4 is not beyond the movable groove 25, so that the movable groove 25 can protect the second end 42 of the connecting rod 4 from being rotated during the rotation. External interference;

The second rotating shaft 5 is disposed inside the circular base 1 , and the second rotating shaft 5 is disposed in the middle of the connecting rod 4 , and the connecting rod 4 can rotate around the second rotating shaft 5 under the external force of the connecting rod 4 thereof. In the embodiment, the circular base 1 is provided with a second concave turntable 11 for arranging the second rotating shaft 5, and the middle of the second rotating shaft 5 is disposed in the middle of the connecting rod, The two ends of the second rotating shaft 5 are rotatably disposed in the second concave turntable 11, and the receiving groove 12 for accommodating the elastic member is disposed under the second concave rotating table 11;

a compression spring 6 disposed in the receiving groove 12 of the circular base 1, the first end of the compression spring abutting against the inner wall of the receiving groove 12, and the second end of the compression spring 6 is opposite to the first end of the connecting rod In this embodiment, the first end of the connecting rod 4 is provided with a cylindrical connecting post 43 , and the second end of the compression spring 6 is sleeved on the connecting post 43 to ensure the connection between the compression spring 6 and the connecting post 43 . The reliability, in turn, ensures that the first end of the compression spring 6 reliably abuts the first end of the connecting post 43.

In an embodiment, the body is provided with two sets of the aforementioned two grass rope connecting structures, and is symmetrically distributed on the body at 180 degrees, and the second grass rope connecting structure and the first grass rope connecting structure are arranged at intervals of 90 degrees. .

The first straw connecting structure in the embodiment can be used for connecting and fixing the double-stranded straw rope after bending, and the process and principle of installing or replacing the straw rope are as follows:

A single-strand straw rope of a required length is folded in three pairs, and the length of the straw rope at both ends after folding is ensured to be the same, and the bent portion 31 which is bent in the middle of the grass rope 3 is folded from the upper cover and the second straw rope The threaded hole 22 is inserted through the inlet, and the bent portion 31 presses the second end 42 of the connecting rod 4, and the second end 42 of the connecting rod 4 is pressed by the bent portion 31 of the straw 3, and then wound around the second The rotating shaft 5 rotates in the strip-shaped perforation 24 of the upper cover toward the center of the upper cover, and at the same time, the second end 42 of the connecting rod 4 also rotates in the movable groove 25 of the boss 21, at this time, the first end of the connecting rod 4 is always Will squeeze the compression spring 6;

When the second end 42 of the connecting rod 4 is rotated to a certain extent, the compression spring 6 is also compressed to a certain extent, the compression spring 6 will rebound, and under the resilience of the compression spring 6, the connecting rod 4 will be reset;

At this time, the second end 42 of the connecting rod 4 is rotated toward the outer circumference of the upper cover. At this time, the bent portion 31 bent in the middle of the straw 3 is just placed on the second end 42 of the connecting rod 4, in order to ensure the sleeve. The reliability of the operator can slightly pull the double-stranded straw rope outward. At this time, the straw rope 3 is firmly connected and fixed on the first straw connecting structure.

The replacement of the straw rope 3 is simpler, and it is only necessary to hold the two free ends of the double-strand straw rope, and the double-strand straw rope is pressed toward the center of the upper lid, and when the grass rope 3 is bent in the middle, the bending portion 31 is bent. After the second straw threading hole 22 and the movable slot 25 are exposed, the bent portion 31 bent in the middle of the straw rope 3 is held by both hands, and pulled out from the exit position of the movable slot 25, and then replaced with a new one. You can use the straw rope.

In this embodiment, two single-strand straw ropes can be connected and fixed on the circular base 1, and the two double-strand straw ropes can be connected and fixed on the upper cover, so that the weeding effect of the whole weeding tray is better.

Claims

A lawn mower for a lawn mower comprising a body, a straw rope (3) attached to the body, and a first grass rope connection structure disposed on the body for connecting and fixing the grass rope (3), Features are:

The first straw connecting structure comprises:

a first straw threading hole (13) disposed on the outer wall of the body;

The rocking member (7), the bottom of the rocking member (7) is disposed in the body, and the bottom of the rocking member (7) is curved, and the curved bottom portion of the rocking member (7) is provided with a plurality of pressing teeth (72);

The first rotating shaft (8) is fixedly disposed inside the body, the first rotating shaft (8) is connected with the middle portion of the rocking member (7), and the rocking member (7) can be wound around the first rotating shaft by the external force at the bottom thereof (8) Rotate;

a torsion spring (9), the torsion spring (9) is disposed on the first rotating shaft (8), the first free end of the torsion spring (9) is opposite to the inner wall, and the second free end of the torsion spring (9) is disposed The rocking member (7) is such that the torsion spring (9) can suppress the rocking member (7) from rotating along the first rotating shaft (8).
The herbicidal disc for a lawn mower according to claim 1, wherein the body comprises an inner hollow circular base (1), and an upper cover (2) fixed to the circular base (1). The first straw threading hole (13) is disposed on the outer circumference of the circular base (1).
The herbicidal disc for a lawn mower according to claim 2, wherein the circular base (1) is provided with a first concave turntable (14) for arranging the first rotating shaft (8). The first rotating shaft (8) is fixed in the first concave turntable (14) and is fixed by the upper cover (2). The first free end of the torsion spring (9) is opposite to the first concave turntable (14). ) offset.
The herbicidal disc for a lawn mower according to claim 3, characterized in that: the top of the rocking member (7) is provided with a convex portion (71), and the upper cover (2) is provided with a through hole (26) The protrusion (71) is disposed through the through hole (26) of the upper cover (2) and exposed to the upper cover (2).
The herbicidal disc for a lawn mower according to claim 4, wherein the body is provided with two sets of the first grass rope (3) connection structures, and is symmetrically distributed on the body at 180 degrees.
The herbicidal disc for a lawn mower according to claim 1, wherein the body comprises a circular base (1) having a hollow interior, and an upper cover (2) fixed to the circular base (1). The body is further provided with a second grass rope connecting structure for connecting and fixing the grass rope (3), and the second grass rope connecting structure comprises:

a second straw threading hole (22) disposed on the upper cover (2), the second straw threading hole (22) allowing the double-strand straw rope to be bent after passing;

a connecting rod (4), the first end (41) of the connecting rod (4) is located in the circular base (1), and the second end (42) of the connecting rod (4) is a free end, the upper cover (2) a strip-shaped perforation (24) is provided in the upper opening, and the second end (42) of the connecting rod (4) is movably disposed in the strip-shaped perforation (24) and partially exposed outside the body, and second The straw threading hole (22) is in communication with the strip-shaped perforation (24), and the bent double-strand straw rope is passed through the second straw stringing hole (22), and the straw rope is The bending portion (31) of 3) can be sleeved on the second end (42) of the connecting rod (4);

a second rotating shaft (5) disposed in the circular base (1), the second rotating shaft being coupled to a middle portion of the connecting rod (4), The connecting rod (4) can rotate around the second rotating shaft under the external force of the free end;

a compression spring disposed in the circular base (1), the first end (41) of the compression spring abutting against the inner wall of the circular base (1), the second end (42) of the compression spring and the connecting rod The first end (41) of (4) is offset.
The herbicidal disc for a lawn mower according to claim 6, wherein the upper cover (2) is provided with an outwardly convex boss (21), and the second straw threading hole (22) ) is disposed on the boss (21).
The herbicidal disc for a lawn mower according to claim 7, wherein the inner wall of the threading hole of the second straw rope (3) is provided with a track groove (23) that cooperates with the grass rope (3); The boss (21) is provided with an active slot (25) corresponding to the strip-shaped through hole (24) for allowing the second end (42) of the connecting rod (4) to freely rotate therein. The inlet position of the threading hole of the second straw rope (3) is disposed toward the outer circumference of the body, and the outlet position of the movable groove (25) on the boss (21) is disposed toward the center of the body.
The herbicidal disc for a lawn mower according to claim 8, characterized in that: the circular base (1) is provided with a second concave turntable (11) for providing a second rotating shaft (5), and the second concave A receiving groove (12) for accommodating the elastic member is disposed under the turret; the first end (41) of the connecting rod (4) is provided with a connecting post (43), and the first end of the pressing spring (41) Abutting against the inner wall of the receiving groove (12), the second end (42) of the compression spring (6) is passed through the connecting post (43) of the first end (41) of the connecting rod (4) to connect with the connecting rod (4) The first end (41) is offset.
The herbicidal disc for a lawn mower according to claim 9, wherein the second end (42) of the connecting rod (4) has a circular arc shape, and the body is provided with two sets of the aforementioned second grass The rope is connected to the structure and is symmetrically distributed on the body at 180 degrees.