CN113439528A

CN113439528A - Mowing appliance capable of preventing winding and clamping

Info

Publication number: CN113439528A
Application number: CN202010467758.1A
Authority: CN
Inventors: 朱俊夫
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-25
Filing date: 2020-05-28
Publication date: 2021-09-28
Also published as: TW202135645A; CN212753290U

Abstract

The invention provides a mowing appliance capable of preventing foreign objects from being wound and stuck. The mowing apparatus comprises a disc body and a plurality of protrusions. The disc body is provided with an upper surface, a lower surface, a connecting hole, a plurality of cutter holes and a plurality of openings, wherein the connecting hole is positioned in the center of the disc body and is communicated with the upper surface and the lower surface of the disc body and used for connecting the disc body to a transmission part of a mowing device, the cutter holes are positioned on the lower surface of the disc body, the openings are positioned on the peripheral edge of the disc body, and the cutter holes and the openings are mutually communicated. The plurality of convex parts are arranged on the upper surface and/or the lower surface of the disc body, and form an anti-blocking wall along with the horizontal rotation of the mowing appliance so as to protect a gap between the mowing appliance and the transmission piece.

Description

Mowing appliance capable of preventing winding and clamping

The invention claims priority from the patent application in taiwan, having priority date 3/25 of 2020 and application number 109109895.

Technical Field

The present invention relates to an improved structure of accessories of a mowing device, particularly to a mowing device which can prevent foreign objects from being entangled into a gap between the mowing device and a transmission member when mowing operation is executed and can avoid the operation stop of the mowing device caused by the entanglement and the blockage of the mowing device.

Background

In general, a lawn mower with a mowing tool is designed to have a disc body, and a peripheral edge of the disc body extends outward. The mowing tool is connected to a transmission part of a mowing device, and is used for horizontally rotating according to a power source of a motor or an engine after the motor or the engine rotates, so that the aim of mowing is fulfilled. Generally, the most common grass cutting tool is mainly made of a cutter rope piece made of plastic nylon as a main accessory for cutting grass. Generally, most common lawn mowers are mainly designed to be safe and labor-saving in operation.

However, when the user actually operates the mowing device, the mowing tool cuts grass to a fixed height along with the horizontal rotation of the disc body. The grass thus cut will fly in the air following the direction of the line of force of the mowing tool after losing grip. During the flying, grass may be entangled into the gap between the mowing device and the transmission member, and when excessive foreign objects are accumulated in the gap, the mowing device is entangled and seized, so that the power source of the motor or the engine cannot be effectively transmitted, and the mowing device stops rotating. At this time, the mowing device must be stopped to remove the foreign object winding in the gap, so as to restart the mowing device to perform mowing operation, and the winding jam is relatively increased along with the increase of mowing area and/or mowing frequency.

Therefore, the inventor of the present invention has made a study and improvement on the existing defects, and provides a grass cutter capable of preventing a winding and jamming, which can prevent a foreign object from winding into a gap between the grass cutter and the transmission member, while maintaining a design of safe operation and saving labor, so as to achieve a more practical purpose.

Disclosure of Invention

The present invention is directed to a lawn mower with an improved structure, which can prevent foreign objects from being entangled in a gap between the lawn mower and a driving member, and prevent the lawn mower from being stopped due to entanglement and jamming. The present invention provides a plurality of protrusions on the upper surface and/or the lower surface of the mowing tool. The user starts the grass cutting device to enable the grass cutting appliance to horizontally rotate according to the power source of the motor or the engine of the grass cutting appliance. When the grass cutting operation is executed, the plurality of convex parts rotate along with the horizontal rotation of the grass cutting device to form an anti-blocking wall for preventing foreign objects from being entangled into a gap between the grass cutting device and the transmission piece.

In one example embodiment, the present invention provides a lawn mowing apparatus comprising a disc and a plurality of protrusions. The disc body is provided with an upper surface, a lower surface, a connecting hole, a plurality of cutter holes and a plurality of openings, wherein the connecting hole is positioned at the center of the disc body and is communicated with the upper surface and the lower surface of the disc body and used for connecting the disc body to a transmission piece of a mowing device. The cutter holes are located on the lower surface of the disc body, the openings are located on the peripheral edge of the disc body, and the cutter holes are mutually communicated with the openings. The plurality of convex parts are arranged on the upper surface and/or the lower surface of the disc body, and form an anti-blocking wall along with the horizontal rotation of the grass cutting device so as to protect a gap between the grass cutting device and the transmission part. In one embodiment, the tray and the plurality of protrusions may be integrally formed. In another embodiment, the mowing apparatus further comprises at least one mowing tool, wherein the at least one mowing tool is mounted in the plurality of tool holes, and the disc body, the plurality of protrusions and the at least one mowing tool can be integrally formed.

In another exemplary embodiment, the present invention provides a lawn mowing apparatus comprising a tray and a plurality of protrusions. The disc body is provided with an upper surface, a lower surface, a connecting hole and at least one blade surface, wherein the connecting hole is positioned at the center of the disc body, and the connecting hole is communicated with the upper surface and the lower surface of the disc body and is used for connecting the disc body to a transmission piece of a mowing device. The at least one knife edge face is positioned on the peripheral edge of the disc body. The plurality of convex parts are arranged on the upper surface and/or the lower surface of the disc body, and form an anti-blocking wall along with the horizontal rotation of the mowing appliance so as to protect a gap between the mowing appliance and the transmission piece. In one embodiment, the tray and the plurality of protrusions may be integrally formed.

The plurality of convex parts are arranged on the upper surface and/or the lower surface of the tray body. The positions of the convex parts are arranged in a main design in an equiangular distribution with the same radius of a circle, and the convex parts are used for balancing the weight distribution of the disc body, so that the center of gravity of the mowing appliance is positioned at the center of the disc body, and the mowing appliance is prevented from shaking up and down in the rotating process due to the fact that the center of gravity of the mowing appliance shifts when the mowing appliance rotates horizontally according to the power source of a motor or an engine of the mowing appliance. When the mowing tool is connected to the transmission piece of the mowing device, the plurality of convex parts are arranged on the periphery of the outer side of the transmission piece. In one embodiment, the plurality of protrusions are individually removable and replaceable.

In another example, the lawn mower may further comprise a plurality of mounting holes, wherein the plurality of mounting holes are disposed on the upper surface and/or the lower surface of the tray and increase the number of mounting holes outward from the center of the tray. The user can adjust the installation positions of the plurality of convex parts according to the difference of the transmission parts. The plurality of mounting holes are arranged in an equiangular distribution of the same radius as the primary design. In one embodiment, the plurality of projections are individually removable and replaceable.

These and other examples of embodiments are further described below with reference to the drawings.

Drawings

Fig. 1 shows a schematic perspective view of a first embodiment of a grass cutting implement of the present invention.

Fig. 2 shows a top view of the grass cutting implement of the present invention.

Fig. 3 shows a bottom view of the grass cutting implement of the present invention.

Fig. 4 shows a schematic view of the assembly between the mowing implement and the mowing device of the invention.

Fig. 5 shows a schematic perspective view of a second embodiment of the mowing implement of the present invention.

Fig. 6 shows a top view of a second embodiment of the mowing implement of the present invention.

Fig. 7 shows a perspective view of a third embodiment of the mowing implement of the present invention.

Fig. 8 shows a schematic perspective view of a fourth embodiment of the mowing implement of the present invention.

[ notation ] to show

1 mowing device

10 mowing tool

20: disc body

211 upper surface

212 lower surface

22: tool hole

23 opening of the container

25 connecting hole

26 convex part

27 mounting hole

28 cutting edge surface

30, mowing tool

40 driving parts

Detailed Description

The invention provides an improved structure of a mowing tool, which can prevent foreign objects (such as long grass or vines) from being wound into a gap between the mowing tool and a transmission part, and avoid the situation that the mowing tool stops rotating because the mowing device cannot effectively transmit a power source of a motor or an engine due to winding and clamping. To further clarify and enable the reader of the present invention to understand the features and advantages of the present invention, the following preferred embodiments are described. It should be understood that the various embodiments shown in the figures are schematic and are not necessarily drawn to scale.

Fig. 1 and 5 show a first and a second embodiment of a mowing implement 10 according to the present invention, respectively, the mowing implement 10 comprising a tray 20 and a plurality of protrusions 26. The plate has an upper surface 211, a lower surface, a connecting hole 25, a plurality of tool holes and a plurality of openings 23. The connecting hole 25 is located at the center of the tray 20, and the connecting hole 25 communicates the upper surface 211 and the lower surface of the tray 20 and is used for connecting the tray 20 to a transmission member of a lawn mowing device. The plurality of cutter holes 22 are located in the lower surface 212 of the disc 20, as shown in FIG. 3. The plurality of openings 23 are formed at the peripheral edge of the tray 20, and the plurality of cutter holes 22 and the plurality of openings 23 communicate with each other. Wherein the tray body 20 is made of aluminum alloy, and the practicability is better. The plurality of protrusions 26 (e.g., metal baffles or steel blades) are disposed on the upper surface 211 and/or the lower surface of the tray 20, as shown in fig. 2, wherein the height of the plurality of protrusions 26 is between about 4 mm and 8 mm. The protrusions 26 form an anti-jamming wall along with the horizontal rotation of the mowing tool 10 to protect the gap between the mowing tool 10 and the transmission member 40, wherein the gap is about 1 mm to 6 mm. And the plurality of protrusions 26 are disposed in an equiangular distribution with the same radius, as shown in fig. 6, to balance the weight distribution of the tray 20, so that the center of gravity of the mowing tool 10 is located at the center of the tray 20, thereby preventing the mowing tool 10 from shaking up and down due to the shift of the center of gravity of the mowing tool 10 during the rotation process. In one embodiment, the plurality of projections 26 are individually removable and replaceable. In another embodiment, the tray 20 and the plurality of protrusions 26 of the lawn mowing apparatus 10 can be integrally formed. The lawn mower 10 further comprises at least one mowing tool 30, wherein the at least one mowing tool 30 (e.g., a cord piece made of plastic nylon) is installed in the plurality of tool holes 22. The at least one mowing cutter 30 may be secured to the plurality of cutter apertures 22 in a variety of suitable manners. In one example, the at least one mowing tool 30 is mounted and fixed to the plurality of cutter holes 22 by using knots or screws after passing through the plurality of openings 23 and the plurality of cutter holes 22. The at least one cutting blade 30 will extend outwardly along the plurality of openings 23 and perform a cutting operation as the mowing tool 10 rotates horizontally. In one embodiment, the at least one mowing cutter 30 is individually removable and replaceable. In another embodiment, the tray 20, the plurality of protrusions 26 and the at least one mowing blade 30 of the mowing apparatus 10 can be integrally formed.

Fig. 4 shows the assembly relationship between the grass cutting implement 10 and the grass cutting device 1 of the present invention, wherein the attachment hole 25 of the grass cutting implement 10 is used to attach the grass cutting implement 10 to the transmission member 40 of the grass cutting device 1. The mowing appliance 10 can be connected to the transmission 40 in a variety of suitable ways. In one example, the driving member 40 has a screw, and the screw is fixed by a corresponding nut after passing through the connecting hole 25 of the lawn mower 10. The positions of the plurality of protrusions 26 can be more precisely set within about 10 mm around the outside of the transmission member 40, and the effect is better within about 2 mm to 3 mm around the outside of the transmission member 40. The number of the plurality of protrusions 26 can be more precisely defined as the power of the transmission member is between 0.5 horsepower and 3 horsepower, and 2 protrusions are arranged; if the amount exceeds 3 horsepower, the number of the plurality of projections 26 may be added.

Fig. 7 shows a third embodiment of the mowing tool 10 of the present invention, wherein the mowing tool 10 may further comprise a plurality of mounting holes 27. The mounting holes 27 are formed on the upper surface 211 and/or the lower surface of the tray 20 and increase the number of the mounting holes from the center of the tray 20 to the outside, so that a user can adjust the mounting positions of the protrusions 26 according to the differences of the transmission members 40. And the plurality of mounting holes 27 are primarily designed in an equiangular distribution of the same radius. In one embodiment, the tray 20, the plurality of protrusions 26 and the plurality of mounting holes 27 of the lawn mowing apparatus 10 can be integrally formed.

Fig. 8 shows a fourth embodiment of mower 10 of the present invention, and mower 10 comprises a tray 20 and a plurality of protrusions 26. The tray has an upper surface 211, a lower surface, a connecting hole 25 and at least one blade surface 28, wherein the connecting hole 25 is located at the center of the tray 20, and the connecting hole 25 connects the upper surface 211 and the lower surface of the tray 20 and is used for connecting the tray 20 to a transmission member of a lawn mowing device. The at least one blade edge 28 is located on the peripheral edge of the tray 20. Wherein the tray body 20 is made of a metal blade (e.g., steel) and is more practical. The plurality of protrusions 26 (e.g., metal baffles or steel blades) are disposed on the upper surface 211 and/or the lower surface of the tray 20, wherein the height of the plurality of protrusions 26 is between about 4 mm and 8 mm. The protrusions 26 form an anti-jamming wall along with the horizontal rotation of the mowing tool 10 to protect the gap between the mowing tool 10 and the transmission member, wherein the gap is about 1 mm to 6 mm. And the positions of the plurality of convex parts 26 are distributed in an equiangular manner with the same radius of circle, so as to balance the weight distribution of the tray body 20, so that the center of gravity of the mowing appliance 10 is positioned at the center of the tray body 20, and the mowing appliance 10 is prevented from shaking up and down in the rotating process due to the deviation of the center of gravity. In one embodiment, the plurality of projections 26 are individually removable and replaceable. In another embodiment, the tray 20 and the plurality of protrusions 26 of the lawn mowing apparatus 10 can be integrally formed.

Therefore, the invention has the functions of preventing foreign objects from winding and clamping the gap between the mowing appliance and the transmission piece and avoiding the phenomenon that the mowing device stops running due to winding and clamping.

However, the summary of the present invention is only an illustration of the preferred embodiments, and the scope of the present invention should not be limited by the description, and any local variations, modifications, or additions may not depart from the scope of the present invention.

Claims

1. A grass cutting implement that prevents wind-up seizing, comprising:

a disc body having an upper surface, a lower surface, a connection hole, a plurality of cutter holes and a plurality of openings, wherein the connection hole is located at the center of the disc body, the connection hole communicates the upper surface and the lower surface of the disc body and is used for connecting the disc body to a transmission member of a mowing device, the plurality of cutter holes are located at the lower surface of the disc body, the plurality of openings are located at the peripheral edge of the disc body, and the plurality of cutter holes and the plurality of openings are communicated with each other; and

and the plurality of convex parts are arranged on the upper surface and/or the lower surface of the disc body and are used for protecting a gap between the mowing appliance and the transmission piece.

2. The winding jam preventable lawn mower of claim 1, wherein the tray is integrally formed with the plurality of protrusions.

3. The device of claim 1, further comprising at least one cutting blade, wherein the at least one cutting blade is disposed in the plurality of blade holes, and the disc, the plurality of protrusions, and the at least one cutting blade are integrally formed.

4. A grass cutting implement that prevents wind-up seizing, comprising:

the disc body is provided with an upper surface, a lower surface, a connecting hole and at least one blade surface, wherein the connecting hole is positioned at the center of the disc body, the connecting hole is communicated with the upper surface and the lower surface of the disc body and is used for connecting the disc body to a transmission part of a mowing device, and the at least one blade surface is positioned at the periphery of the disc body; and

5. The winding jam preventable lawn mower of claim 4, wherein the tray is integrally formed with the plurality of protrusions.

6. The winding jam preventable lawn mower of claim 1 or 4, wherein the plurality of protrusions are disposed in an equiangular distribution using the same radius of a circle.

7. The winding jam preventable lawn mowing appliance according to claim 1 or 4, wherein the plurality of protrusions are located around an outer side of the transmission member when the reel body is connected to the transmission member.

8. The winding jam preventable lawn mower of claim 1 or 4, wherein the plurality of protrusions are individually detachable and replaceable.

9. The mower apparatus of claim 1 or 4, further comprising a plurality of mounting holes, wherein the plurality of mounting holes are formed in the upper surface and/or the lower surface of the tray and outwardly increase the number of the mounting holes from the center of the tray, so that the plurality of protrusions can be mounted at different positions according to the driving member.

10. The winding jam preventable lawn mower of claim 9, wherein the plurality of mounting holes are equiangularly distributed using the same radius of circle.