CN214015051U

CN214015051U - Mowing cutter and mower

Info

Publication number: CN214015051U
Application number: CN202022306034.7U
Authority: CN
Inventors: 唐利敏; 刘月安
Original assignee: Shenzhen Topband Co Ltd
Current assignee: Shenzhen Topband Co Ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-08-24
Anticipated expiration: 2030-10-16

Abstract

The utility model is suitable for a garden instrument field provides a mowing tool and lawn mower, and this mowing tool includes cutter head cover, blade disc assembly and driving motor, and this blade disc assembly includes: a blade guard; the sliding chute is arranged in the accommodating cavity; the blade is arranged in the accommodating cavity and can slide along the sliding groove; a spring disposed within the receiving cavity. The embodiment of the utility model provides a through setting up the blade safety cover, it holds the chamber to set up on the blade safety cover, set up the blade and holding the intracavity, and set up the spring holding the intracavity, the pretension pulling force that keeps holding the intracavity is provided for the blade, it sets up the spout to hold the intracavity again, make the blade can slide in the spout, the blade is thrown away from holding the intracavity under centrifugal force effect, the blade gets back to under the pulling force effect of spring and holds the intracavity, make the blade not expose outside when lawn mower stop work, thereby improve the security of lawn mower in the handling, and can avoid blade and foreign object collision and lead to the blade to damage.

Description

Mowing cutter and mower

Technical Field

The utility model belongs to the garden instrument field especially relates to a mowing tool and lawn mower.

Background

A Lawn mower (Lawn power) is a mechanical tool for trimming lawns, vegetations and the like, and comprises a machine body, a cutter head, an engine, traveling wheels, a traveling mechanism, blades, handrails and a control part.

The cutter head is arranged on the travelling wheel, the engine is arranged on the cutter head, the blade is arranged on the output shaft of the engine, and the blade mows, trims lawns, vegetations and the like by utilizing the high-speed rotation of the engine, thereby saving the operation time of weeders and reducing a large amount of human resources.

However, the blades of the existing lawn mowers are always exposed at the bottom of the lawn mowers, so that safety hazards exist when the lawn mowers are carried, and the blades can be damaged due to collision of foreign objects.

SUMMERY OF THE UTILITY MODEL

The utility model provides a mowing tool, aiming at solving the problem that the blade of a mower is always exposed outside.

The utility model discloses a realize like this, a mowing tool, be in including cutter head cover, setting cutter head assembly and the drive of cutter head cover bottom cutter head assembly pivoted driving motor, cutter head assembly includes:

the blade protection cover rotates along with the output shaft of the driving motor, an accommodating cavity is formed in the blade protection cover, and a blade outlet communicated with the accommodating cavity is formed in the side face of the blade protection cover;

the sliding chute is arranged in the accommodating cavity, and one end of the sliding chute, which is close to the knife outlet, is opened;

a blade disposed within the receiving cavity, the blade being slidable along the chute;

the spring is arranged in the accommodating cavity, one end of the spring is fixed at one end, far away from the cutter outlet, of the sliding groove, and the other end of the spring is fixedly connected with the blade.

Furthermore, the cutter head assembly further comprises a guide groove seat arranged in the accommodating cavity, and the sliding groove is arranged on the guide groove seat.

Furthermore, the cutter head assembly further comprises a blade seat arranged in the sliding groove, the blades are installed on the blade seat, and the spring is fixedly connected with the blade seat.

Furthermore, the top of the sliding groove is provided with a first limiting part.

Furthermore, the spring is fixedly connected with the blade seat through a screw, and a position avoiding groove for avoiding the head of the screw is formed in the bottom of the sliding groove.

Furthermore, a second limiting part is arranged at the end part of the avoiding groove.

Furthermore, a plurality of accommodating cavities are formed in the blade protection cover.

Further, a plurality of the accommodating cavities are uniformly arranged along the circumferential direction.

Furthermore, the middle part of blade safety cover is provided with the confession the shaft hole that driving motor's output shaft wore out, the blade disc subassembly still includes the setting and is in the shaft cover of the tip of driving motor's output shaft.

The utility model also provides a mower, be in including fuselage, setting the walking wheel and the foretell mowing tool of fuselage bottom.

The embodiment of the utility model provides a through setting up the blade safety cover, it holds the chamber to set up on the blade safety cover, set up the blade and holding the intracavity, and set up the spring holding the intracavity, keep holding the pretension pulling force that holds the intracavity for the blade provides, it sets up the spout to hold the intracavity again, make the blade can slide in the spout, when lawn mower during operation, the cutter head assembly rotates at a high speed, the blade is thrown away from holding the intracavity under the centrifugal force effect, the work of mowing, but after the lawn mower stop work, cutter head assembly stall, centrifugal force disappears, the blade gets back to and holds the intracavity under the pulling force effect of spring, make the blade not expose outside when the lawn mower stop work, thereby improve the security of lawn mower in handling, and can avoid blade and foreign object collision and lead to the blade to damage.

Drawings

FIG. 1 is a perspective view of a lawn mower according to the present invention;

FIG. 2 is a perspective view of the mowing tool according to the present invention;

FIG. 3 is an exploded view of the mowing tool provided by the present invention;

fig. 4 is a perspective structural view of the cutter head assembly provided by the present invention;

fig. 5 is an exploded view of the cutterhead assembly provided by the present invention;

FIG. 6 is a perspective view of the blade and the spring mounted on the guide slot seat;

fig. 7 is a perspective view of the guide groove seat according to the present invention.

In the figure, 10, the fuselage; 20. a traveling wheel; 30. a mowing tool; 1. a cutter head cover; 2. a cutter head assembly; 21. a blade guard; 211. an accommodating chamber; 212. a knife edge is formed; 213. a shaft hole; 22. a guide groove seat; 221. a chute; 222. a first limiting part; 223. a position avoiding groove; 224. a second limiting part; 23. a blade; 24. a spring; 25. a blade seat; 26. a screw; 27. a shaft cover; 3. the motor is driven.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model discloses a cutter head assembly includes and follows driving motor's output shaft pivoted blade safety cover, setting are in hold the spout of intracavity and set up and be in hold the spring of intracavity. The embodiment of the utility model provides a through setting up the blade safety cover, it holds the chamber to set up on the blade safety cover, set up the blade and holding the intracavity, and set up the spring holding the intracavity, keep holding the pretension pulling force that holds the intracavity for the blade provides, it sets up the spout to hold the intracavity again, make the blade can slide in the spout, when lawn mower during operation, the cutter head assembly rotates at a high speed, the blade is thrown away from holding the intracavity under the centrifugal force effect, the work of mowing, but after the lawn mower stop work, cutter head assembly stall, centrifugal force disappears, the blade gets back to and holds the intracavity under the pulling force effect of spring, make the blade not expose outside when the lawn mower stop work, thereby improve the security of lawn mower in handling, and can avoid blade and foreign object collision and lead to the blade to damage.

Example one

As shown in fig. 1, an embodiment of the present invention provides a lawn mower, which includes a mower body 10, a traveling wheel 20 disposed at the bottom of the mower body 10, and a mowing tool 30. For clarity of illustration of the position of the mowing tool 30 on the body 10, fig. 1 is shown with the bottom of the body 10 facing up in the plane of the drawing.

Specifically, the main body 10 includes a frame, a traveling mechanism, a control portion, etc., traveling wheels 20 are provided at the bottom of the main body 10, and a mowing tool 30 is provided at the bottom of the main body 10 for mowing. When mowing, the blade 23 of the mowing tool 30 is adjusted to a desired height, and the blade 23 of the mowing tool 30 is rotated at a high speed to cut grass higher than the height of the blade 23.

As shown in fig. 2 to 4, the grass cutting tool 30 includes a cutter head cover 1, a cutter head assembly 2 disposed at a bottom of the cutter head cover 1, and a driving motor 3 for driving the cutter head assembly 2 to rotate, wherein the cutter head assembly 2 includes:

the blade protection cover 21 rotates along with the output shaft of the driving motor 3, an accommodating cavity 211 is formed in the blade protection cover 21, and a blade outlet 212 communicated with the accommodating cavity 211 is formed in the side surface of the blade protection cover 21;

a slide groove 221 disposed in the accommodating cavity 211, wherein one end of the slide groove 221 close to the knife-out edge 212 is open;

a blade 23 disposed in the accommodating cavity 211, wherein the blade 23 can slide along the sliding groove 221;

and the spring 24 is arranged in the accommodating cavity 211, one end of the spring 24 is fixed at one end of the sliding chute 221, which is far away from the knife-out edge 212, and the other end of the spring 24 is fixedly connected with the blade 23.

The blade 23 in fig. 3 is not thrown away and the blade 23 in fig. 4 is thrown away.

Specifically, the cutter head cover 1 is fixedly installed at the bottom of the machine body 10, the driving motor 3 is installed on the machine body 10 of the mower, the blade protection cover 21 is arranged at the bottom of the cutter head cover 1 and installed on an output shaft of the driving motor 3, the top of the accommodating cavity 211 of the blade protection cover 21 (namely, towards one end of the cutter head cover 1) is not closed and is provided with an opening, so that the sliding groove 221, the blades 23, the spring 24 and the like can be conveniently placed in the accommodating cavity 211, and when the blades 23 slide along the sliding groove 221, the accommodating cavity 211 can be accessed from the blade outlet 212. The slide groove 221 extends from the middle to the edge of the blade protection cover 21. The sliding groove 221 may be detachably installed in the accommodating cavity 211, or may be directly opened in the accommodating cavity 211. The blade 23 may be directly disposed to slide within the chute 221.

In the embodiment of the present invention, the spring 24 is in the normal state of being unstretched and uncompressed, and the blade 23 is in the accommodating cavity 211. When the mower works, the cutter head assembly 2 rotates at a high speed under the driving of the driving motor 3, at the moment, the centrifugal force acting on the blade 23 is larger than the pulling force of the spring 24, the spring 24 is stretched, and the blade 23 slides along the sliding groove 221 and is thrown out of the accommodating cavity 211; after the mower stops working, the driving motor 3 stops working, the cutterhead assembly 2 stops rotating, the centrifugal force disappears, at the moment, the spring 24 is in a stretching state, and the blades 23 return to the accommodating cavity 211 under the action of the tensile force of the spring 24.

The embodiment of the utility model provides a through setting up blade safety cover 21, the setting holds chamber 211 on blade safety cover 21, set up blade 23 in holding chamber 211, and set up spring 24 in holding chamber 211, for blade 23 provides the pretension pulling force that keeps holding chamber 211, set up spout 221 in holding chamber 211 again, make blade 23 can slide in spout 221, when lawn mower work, cutter head assembly 2 rotates at a high speed, blade 23 is thrown away from holding chamber 211 under the centrifugal force effect, the work of mowing, but behind the lawn mower stop work, cutter head assembly 2 stall, centrifugal force disappears, blade 23 gets back to holding chamber 211 under the pulling force effect of spring 24 in, make blade 23 not expose outside when the lawn mower stop work, thereby improve the security of lawn mower in handling, and can avoid blade 23 and foreign object collision and lead to blade 23 to damage.

Example two

In an alternative embodiment of the present invention, as shown in fig. 4-6, further, the cutter head assembly 2 further includes a guide slot seat 22 disposed in the accommodating cavity 211, and the sliding slot 221 is disposed on the guide slot seat 22. The chute seat 22 is detachably mounted in the accommodation chamber 211. The guide groove seat 22 is arranged, the blade 23, the spring 24 and the like can be installed in the sliding groove 221, and then the guide groove seat 22 is installed in the accommodating cavity 211, so that the installation process can be simplified.

EXAMPLE III

In an alternative embodiment of the present invention, as shown in fig. 5, further, the cutter head assembly 2 further includes a blade seat 25 disposed in the sliding groove 221, the blade 23 is mounted on the blade seat 25, and the spring 24 is fixedly connected to the blade seat 25. The blade seat 25 acts as a slider, and when the stretched spring 24 contracts, the blade seat 25 and the blade 23 are driven to move together into the accommodating cavity 211, and when the centrifugal force acts, the blade seat 25 and the blade 23 also move together out of the accommodating cavity 211. Since the blade 23 is thin and has sharp side edges, the blade may slide in the sliding groove 221 for a long time, which may damage the side wall of the sliding groove 221 and cause the blade 23 to slide unsmoothly. By providing the blade seat 25, the blade 23 slides more smoothly.

Example four

As shown in fig. 6 and 7, in an alternative embodiment of the present invention, further, a first limiting portion 222 is disposed on the top of the sliding groove 221. The first stopper 222 prevents the blade seat 25 from falling off from the top of the slide groove 221.

Furthermore, the spring 24 is fixedly connected with the blade seat 25 through a screw 26, and a clearance groove 223 for avoiding the head of the screw 26 is arranged at the bottom of the sliding groove 221. The spring 24 and the blade seat 25 are fixedly connected through a screw 26, so that the assembly and disassembly are convenient, and the spring 24 can be replaced at any time after the spring 24 is elastically fatigued.

Further, the end of the avoiding groove 223 is provided with a second stopper 224. When the centrifugal force acts, the screw 26 connecting the spring 24 and the blade seat 25, the blade seat 25 and the blade 23 also move out of the accommodating cavity 211 together, and when the screw 26 moves to the second limiting part 224, the screw is blocked by the second limiting part 224, so that the blade seat 25 and the blade 23 cannot move out of the accommodating cavity 211 continuously, and the spring 24 cannot be extended continuously, thereby preventing the spring 24 from being stretched excessively and prolonging the service life of the spring 24.

EXAMPLE five

In an alternative embodiment of the present invention, as shown in fig. 3-5, further, a plurality of accommodating cavities 211 are provided on the blade protecting cover 21. The number of housing cavities 211 is the same as the number of blades 23 of the mower, one blade 23 being provided in each housing cavity 211. Since the blades 23 of the lawn mower are generally uniformly arranged in the circumferential direction, the plurality of housing cavities 211 are also uniformly arranged in the circumferential direction. In this embodiment, three accommodation cavities 211 are provided.

EXAMPLE six

As shown in fig. 5, in an optional embodiment of the present invention, further, the middle portion of the blade protecting cover 21 is provided with a shaft hole 213 for the output shaft of the driving motor 3 to pass through, and the cutter head assembly 2 further includes a shaft cover 27 disposed at the end of the output shaft of the driving motor 3. The shaft hole 213 is provided therein with a rotation prevention portion adapted to the output shaft of the driving motor 3. A shaft cover 27 is arranged, and the blade protection cover 21 is detachably arranged on the output shaft of the driving motor 3 through the shaft cover 27, so that the maintenance or the replacement is convenient. Of course, the blade guard 21 may be fitted to the output shaft of the drive motor 3 by interference fit, and the blade guard 21 may be fixedly attached to the output shaft of the drive motor 3.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a mowing tool, includes the cutter head cover, sets up cutter head assembly and the drive of cutter head cover bottom cutter head assembly pivoted driving motor, its characterized in that, cutter head assembly includes:

2. The grass cutting tool of claim 1, wherein the cutter head assembly further comprises a channel seat disposed within the receiving cavity, the chute being disposed on the channel seat.

3. The mowing tool according to claim 1 or 2, wherein the cutterhead assembly further comprises a blade seat disposed within the chute, the blade being mounted on the blade seat, the spring being fixedly attached to the blade seat.

4. The mowing tool according to claim 3, wherein a first stopper is provided on a top of the chute.

5. The grass cutting tool as claimed in claim 3, wherein the spring is fixedly connected with the blade seat through a screw, and a position avoiding groove for avoiding the head of the screw is formed at the bottom of the sliding groove.

6. The mowing tool according to claim 5, wherein a second stopper is provided at an end of the catching groove.

7. The grass cutting tool of claim 1, wherein a plurality of the receiving cavities are provided in the blade guard.

8. The grass cutting tool of claim 7, wherein the plurality of receiving cavities are evenly arranged in a circumferential direction.

9. The grass cutting tool as claimed in claim 1, wherein the blade guard has a shaft hole formed in a middle portion thereof through which the output shaft of the drive motor passes, and the cutter head assembly further includes a shaft cover provided at an end portion of the output shaft of the drive motor.

10. A lawnmower comprising a main body, road wheels provided at the bottom of the main body, and a mowing tool according to any one of claims 1 to 9.