CN213462992U

CN213462992U - Blade structure for mower, cutting cutter disc with blade structure and mower

Info

Publication number: CN213462992U
Application number: CN202020803473.6U
Authority: CN
Inventors: 杜帅
Original assignee: Ninebot Beijing Technology Co Ltd
Current assignee: Weilan continental (Beijing) Technology Co.,Ltd.
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-06-18
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a cutting blade dish, lawn mower that is used for blade structure of lawn mower and has it, a blade structure for the lawn mower includes: the blade is provided with a cutting edge, and the length direction of the cutting edge is a tool tip; the protection part is coated outside the blade and coats the cutter point. According to the utility model discloses a blade structure for lawn mower through setting up the cladding of protection part outside the blade and cladding knife tip, can be at the high-speed rotatory during operation of blade structure for protection part plays the guard action to the knife tip of energy concentration, thereby can prevent effectively that the knife tip from causing the damage to operator or other objects.

Description

Blade structure for mower, cutting cutter disc with blade structure and mower

Technical Field

The utility model belongs to the technical field of the cutter manufacturing technique and specifically relates to a cutting blade disc, lawn mower that is used for the blade structure of lawn mower and has it.

Background

In the related art, the blades of the lawn mower are mounted on the cutter head, and the cutting edges on both sides of the blades are particularly sharp. When a cutter head of the mower rotates at a high speed to throw the blades to cut, the energy generated by the blades is large, the damage of a cutter tip to people or objects is very large, the operation is improper slightly, and serious personal safety accidents such as cutting hands or feet of people can occur, and the mower is extremely dangerous.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model discloses an aim at propose a blade structure for lawn mower, prevent effectively that the knife tip from causing damage blade structure to operator or other objects.

Another object of the present invention is to provide a cutting blade disc using the above blade structure.

Still another object of the present invention is to provide a mower with the above cutter disc.

According to the utility model discloses a blade structure for lawn mower of first aspect embodiment includes: the cutting blade is provided with a cutting edge, and the end part of the cutting edge in the length direction is a cutter point; the protection part is coated outside the blade and coats the cutter point.

According to the utility model discloses a blade structure for lawn mower through setting up the cladding of protection part outside the blade and cladding knife tip, can be at the high-speed rotatory during operation of blade structure for protection part plays the guard action to the knife tip of energy concentration, thereby can prevent effectively that the knife tip from causing the damage to operator or other objects.

According to some embodiments of the utility model, be formed with on the protection part by its edge to the sunken breach of dodging in middle part, part the cutting edge is in dodge breach department and expose.

According to some embodiments of the present invention, the blade is rectangular sheet-shaped, the cutting edges are provided on both sides of the blade in the width direction, two avoidance notches are formed in the protection portion, and the two avoidance notches correspond to the two cutting edges one to one; or one side of the blade in the width direction is provided with the cutting edge, and the protection part is provided with one avoidance notch corresponding to the cutting edge.

According to some embodiments of the present invention, both sides of the blade in the width direction all have the cutting edge, just at least one apex angle department of the blade is formed with the unfilled corner structure, so that have unfilled corner structure department the length of the cutting edge of the blade is less than the length of the blade.

According to some embodiments of the invention, the opening width of the avoiding notch is gradually reduced along the direction away from the edge of the protection part.

According to some embodiments of the present invention, the protection portion is a protection sleeve having an accommodation cavity, a portion of the blade is located in the accommodation cavity, and a portion of the cutting edge as another portion of the blade extends out of the accommodation cavity from the avoidance notch; or the protective part is a protective layer coated on the blade; or the guard portion and the blade are integrally formed.

According to some embodiments of the invention, the protective part is when the protective sheath, the one end of the length direction of the protective sheath has an opening for putting into the blade.

According to some embodiments of the utility model, be formed with the mounting hole that link up along its thickness direction on the blade, be formed with on the protection part with the hole of dodging that the mounting hole is relative.

According to some embodiments of the present invention, the number of the mounting holes is one, and the mounting hole is located at one end of the blade in the length direction; or the mounting holes are arranged at intervals along the symmetrical axis of the length direction of the blade.

According to the utility model discloses cutting cutter dish of second aspect embodiment, include: a cutter head body; a plurality of blade structures, it is a plurality of blade structure is followed the circumference interval of blade disc body sets up on the blade disc body, blade structure is according to the utility model discloses the blade structure for lawn mower of above-mentioned first aspect embodiment.

According to the utility model discloses lawn mower of third aspect embodiment includes: a mower body; cutting mechanism, cutting mechanism includes drive connection's drive division and cutter disc, wherein, cutter disc rotationally sets up the bottom of lawn mower body, cutter disc is according to the utility model discloses the cutter disc of the embodiment of the above-mentioned second aspect.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a blade configuration for a lawn mower according to an embodiment of the present invention;

fig. 2 is a schematic view of a blade arrangement for a lawn mower according to an embodiment of the present invention;

FIG. 3 is a schematic view of a guard for a blade structure of a lawn mower according to an embodiment of the present invention;

FIG. 4 is a schematic view of a blade configuration for a lawn mower according to another embodiment of the present invention;

fig. 5 is a schematic view of a blade arrangement for a lawn mower according to another embodiment of the present invention;

fig. 6 is a schematic view of a guard for a blade structure of a lawn mower according to another embodiment of the present invention;

fig. 7 is a schematic view of a cutter disc according to an embodiment of the present invention.

Reference numerals:

100: a blade structure;

1: a blade; 11: a blade; 12: a knife tip; 13: mounting holes;

2: a protection part; 21: avoiding the notch; 22: avoiding holes;

200: a cutter disc; 201: the cutter head body.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A blade structure 100 for a lawn mower according to an embodiment of the present invention is described below with reference to fig. 1-6.

As shown in fig. 1 to 6, a blade structure 100 for a lawn mower according to an embodiment of the first aspect of the present invention includes a blade 1 and a guard portion 2.

Specifically, referring to fig. 1 to 6, the insert 1 has an edge 11, and the end of the edge 11 in the longitudinal direction is a cutting edge 12. The protection part 2 covers the blade 1 and covers the blade edge 12.

The cutting edge 12 may be provided at both ends of the cutting edge 11 in the longitudinal direction (as shown in fig. 2 and 5), and the protection member 2 covers the cutting edge 12 at both ends of the cutting edge 11. Therefore, the knife tip 12 of the blade 1 is arranged in the protection part 2, when the blade structure 100 rotates at a high speed to work, the protection part 2 can protect the knife tip 12 with concentrated energy, so that the knife tip 12 can be effectively prevented from damaging people or other objects, and the safety of the blade structure 100 is improved.

According to the utility model discloses a blade structure 100 for lawn mower makes 2 cladding of protection portion outside blade 1 and cladding knife tip 12 through setting up, at the high-speed rotatory during operation of blade structure 100 for 2 knife tips 12 to energy concentration of protection portion play the guard action, thereby can prevent effectively that knife tip 12 from leading to the fact the damage to people or other objects, have improved the security of blade structure 100.

According to some embodiments of the present invention, as shown in fig. 1 to 3, the protection portion 2 is formed with an avoidance gap 21 recessed from an edge thereof to a middle portion thereof. Wherein, the protecting part 2 can be provided with an avoiding gap 21 (not shown), and at this time, the blade 1 can be provided with a blade 11 at any side of the width direction; alternatively, the protection portion 2 may be provided with two relief notches 21 (as shown in fig. 3), and in this case, the blade 1 may be provided with the cutting edges 11 on both sides in the width direction (as shown in fig. 2 and 5). The partial cutting edge 11 is exposed at the relief notch 21. When the cutter disc 100 of the mower works, the blade 11 at the position of the avoiding notch 21 is used for mowing, so that the blade structure 100 can be effectively ensured to have good mowing performance.

Further, referring to fig. 2 and 5 in combination with fig. 3 and 6, the blade 1 is rectangular sheet-shaped, the blade 1 has the cutting edges 11 on both sides in the width direction, two avoidance notches 21 are formed on the protection portion 2, and the two avoidance notches 21 correspond to the two cutting edges 11 one to one. Thereby, the working efficiency of the blade structure 100 is improved. Meanwhile, the cutting edge 11 may be symmetrical about the central axis of the blade 1 in the width direction, and the two avoiding notches 21 are symmetrical about the central axis of the protection part 2 in the width direction, so that the blade 1 and the protection part 2 have simple structures and are convenient to process. Alternatively, one side of the blade 1 in the width direction has the blade 11, and the protecting part 2 is formed with one relief notch 21 (not shown) corresponding to the blade 11, so that the processing of the blade 1 and the protecting part 2 is easy, and the cost is reduced.

Further, both sides of the blade 1 in the width direction have the cutting edges 11, and a corner cut structure is formed at least one corner of the blade 1 so that the length of the cutting edge 11 of the blade 1 having the corner cut structure is smaller than the length of the blade 1. As shown in fig. 2, two corners of the same end of the blade 1 in the length direction are both formed with a corner cut structure. In the installation of the blade 1, the unfilled corner structure can play a fool-proof role, can effectively avoid the installation error of the blade 1 and is convenient for cutting the blade 1 after heat treatment. In addition, the weight of the blade 1 is also effectively reduced, facilitating a lightweight design of the blade structure 100.

According to some optional embodiments of the present invention, the opening width of the avoidance notch 21 is gradually reduced in the direction away from the edge of the protection part 2. As shown in fig. 3 and 6, the shape of the cross section of the relief notch 21 is substantially trapezoidal, and the cutting edge 11 is located at the end of the relief notch 21 having a larger width, thereby increasing the area of the cutting edge 11 during operation and improving the operating efficiency of the blade structure 100.

Optionally, the protection part 2 is a protective sleeve with a receiving cavity, a part of the blade 1 is located in the receiving cavity, and a part of the cutting edge 11 as another part of the blade 1 extends out of the receiving cavity from the relief notch 21. Referring to fig. 2 and fig. 3 in combination with fig. 1, the protection part 2 is a protection sleeve with a hollow inside, and when the two ends of the blade 1 in the width direction are both provided with the cutting edges 11, the two ends of the protection sleeve in the width direction are both provided with the avoidance notches 21, so that the cutting edges 11 can extend out of the avoidance notches 21 to form the accommodating cavity. When any end of the blade 1 in the width direction is provided with the cutting edge 11, an avoiding notch 21 is arranged at the end, corresponding to the cutting edge 11, in the width direction of the protective sleeve, so that the cutting edge 11 can extend out of the accommodating cavity from the avoiding notch 21.

Or alternatively, the guard 2 is a protective layer applied to the outside of the blade 1. Therefore, the manufacturing processes of the protection part 2 can be reduced, the cost is reduced, and meanwhile, the protection part 2 is simple in structure and convenient to operate by coating the protection layer on the blade 1.

Of course, the present invention is not limited thereto, and the protection portion 2 and the blade 1 may be integrally formed. Wherein, the protection part 2 and the blade 1 can be integrally formed by injection molding. With such an arrangement, the manufacturing process of the blade structure 100 is simplified, and the cost is reduced.

Further, when the protection part 2 is a sheath, one end of the sheath in the longitudinal direction has an opening for placing the blade 1. The sheath may be formed separately and the blade 1 then placed into the sheath through the opening in the sheath. With the arrangement, when the blade 1 is damaged, only the blade 1 needs to be replaced without replacing a protective sleeve, so that the maintenance cost of the blade structure 100 is reduced.

According to some embodiments of the utility model, be formed with the mounting hole 13 that link up along the thickness direction on the blade 1, be formed with the hole of dodging 22 relative with mounting hole 13 on the protection part 2. For example, referring to fig. 1 to 6, the mounting hole 13 is a through hole penetrating in the thickness direction of the insert 1, the avoiding hole 22 penetrates the protection portion 22 in the thickness direction of the protection portion 2, and the mounting hole 13 and the avoiding hole 22 are disposed to face each other when the protection portion 2 is assembled to the insert 1. Thus, by providing the mounting hole 13 and the relief hole 22, when the blade structure 100 is mounted to the cutter disc 200 of the lawn mower, the protector can thread a threaded fastener, such as a bolt, through the mounting hole 13 and the relief hole 22 and then threadedly connect the blade structure 200 to fix the entire blade structure 100 to the cutter disc 200, thereby effectively ensuring the firmness of mounting the blade structure 100 and effectively improving the safety of the lawn mower. It is understood that the specific number of the mounting holes 13 and the avoiding holes 22 can be set according to actual requirements and designs to better meet practical applications.

In some alternative embodiments, as shown in fig. 1-3, the mounting hole 13 is one, and the mounting hole 13 is located at one end of the blade 1 in the length direction. In this case, the protection member 2 may have one escape hole 22, and the position of the escape hole 22 is opposite to the position of the mounting hole 13. So configured, the blade structure 100 is simple in structure and easy to machine and install.

Of course, the present invention is not limited thereto, and in other alternative embodiments, the mounting hole 13 may be a plurality of mounting holes 13, and the plurality of mounting holes 13 are arranged at intervals along the symmetry axis of the length direction of the blade 1. In the description of the present invention, "a plurality" means two or more. As shown in fig. 4, 5 and 6, the number of the mounting holes 13 is two, and the two mounting holes 13 are provided at intervals in the longitudinal direction of the insert 1. Therefore, the installation stability of the blade structure 100 is enhanced on one hand by arranging the plurality of installation holes 13 on the blade 1, and the length of the blade structure 100 at the actual cutting part of the blade 1 during operation can be adjusted according to actual operation requirements on the other hand, so that the flexibility of the blade structure 100 during operation is ensured.

In some alternative embodiments, referring to fig. 2 and 5, both ends of the cutting edge 11 are provided with the cutting tips 12, and the protecting part 2 covers the cutting tips 12 of the cutting edge 11, so that the protecting part 2 protects each cutting tip 12 of the cutting edge 11, and even if the installation direction of the blade 1 is wrong, the blade 1 can be prevented from being damaged on the body of an operator due to improper operation. At least one end of the relief notch 21 extends to at least one cutting edge 12 of the cutting edge 11 corresponding thereto. Any end of the notch 21 may be extended to the cutting edge 12 of the corresponding cutting edge 11, or both ends of the notch 21 may be extended to the cutting edge 12 of the corresponding cutting edge 11. So set up, protection part 2's simple structure, the processing of being convenient for.

In some alternative embodiments, the protector 2 is a rubber protector or a PU (polyurethane) foam protector. The rubber protection part has the advantages of good wear resistance, high elasticity, high breaking strength and the like. The PU foaming protection part has the advantages of high tensile strength, good corrosion resistance, low cost, long service life and the like. But is not limited thereto.

As shown in fig. 7, according to the cutting cutter disc 200 of the embodiment of the second aspect of the present invention, including the cutter disc body 201 and the plurality of blade structures 100, the plurality of blade structures 100 are disposed on the cutter disc body 201 along the circumferential interval of the cutter disc body 201, and the blade structures 100 are the blade structures 100 for the lawn mower according to the embodiment of the first aspect of the present invention.

According to the cutter disc 200 of the embodiment of the present invention, by using the blade structure 100 for a lawn mower according to the above-mentioned first aspect of the present invention, the blade structure 100 on the cutter disc 200 can be effectively prevented from damaging the human body due to improper operation,

according to the utility model discloses lawn mower of third aspect embodiment (not shown), including lawn mower body and cutting mechanism, cutting mechanism includes drive connection's drive portion and cutter disc 200, and wherein, cutter disc 200 rotationally sets up in the bottom of lawn mower body, and cutter disc 200 is according to the utility model discloses above-mentioned second aspect embodiment's cutter disc 200.

According to the utility model discloses a some embodiments, the lawn mower can be for the robot that mows, and cutting mechanism's drive division is located the lawn mower body, and cutter disc 200 is connected with the drive division electricity, and cutter disc 200 installs in the bottom of lawn mower body, and cutter disc 200 can rotate around self the central axis, guarantees that blade structure 100 on cutter disc 200 can carry out diversified mowing.

According to the utility model discloses lawn mower through rotationally setting up cutting cutter disc 200 in the bottom of lawn mower body, and cutting cutter disc 200 is according to the utility model discloses the cutting cutter disc 200 of the embodiment of above-mentioned second aspect, from this, can avoid the lawn mower to cause the damage because of the improper operation to people's health effectively, guaranteed the good performance of mowing of lawn mower simultaneously again.

Other constructions and operations of the mower according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A blade structure for a lawn mower, comprising:

the blade is provided with a cutting edge, and the end part of the cutting edge in the length direction is a tool tip;

the protection part is coated outside the blade and coats the cutter point.

2. The blade structure for a lawnmower according to claim 1, wherein the guard portion has an escape notch formed therein and recessed from an edge thereof toward a middle portion, and a part of the blade edge is exposed at the escape notch.

3. The blade structure for a lawn mower according to claim 2, wherein said blade is in a rectangular plate shape,

the two sides of the blade in the width direction are provided with the cutting edges, two avoiding notches are formed in the protection part, and the two avoiding notches correspond to the two cutting edges one to one; or

One side of the blade in the width direction is provided with the cutting edge, and the protection part is provided with one avoidance notch corresponding to the cutting edge.

4. The blade structure for a lawn mower according to claim 3, wherein both sides of the blade in the width direction have the cutting edges, and wherein at least one top corner of the blade is formed with a corner-lacking structure so that the length of the cutting edge of the blade where the corner-lacking structure is provided is smaller than the length of the blade.

5. The blade structure for a lawn mower according to claim 2, wherein an opening width of the relief notch gradually decreases in a direction away from the edge of the guard portion.

6. The blade structure for a lawn mower according to claim 2,

the protecting part is a protecting sleeve with an accommodating cavity, one part of the blade is positioned in the accommodating cavity, and one part of the blade is used as the other part of the blade and extends out of the accommodating cavity from the avoiding gap; or

The protective part is a protective layer coated on the blade; or

The guard portion is integrally formed with the blade.

7. The blade structure for a lawn mower according to claim 6,

the protection portion is the protective sheath, the one end of the length direction of protective sheath has the opening that is used for putting into the blade.

8. The blade structure for a lawnmower according to any one of claims 1 to 7, wherein the blade is formed with a mounting hole penetrating in a thickness direction thereof, and the guard portion is formed with a relief hole opposing the mounting hole.

9. The blade structure for a lawn mower according to claim 8,

the number of the mounting holes is one, and the mounting holes are positioned at one end of the blade in the length direction; or

The mounting holes are multiple and are arranged at intervals along the symmetrical axis of the length direction of the blade.

10. A cutter disc, comprising:

a cutter head body;

a plurality of blade structures, a plurality of said blade structures being disposed on said cutterhead body at intervals along a circumferential direction of said cutterhead body, said blade structures being in accordance with any one of claims 1-9 for a lawn mower.

11. A lawn mower, comprising:

a mower body;

cutting mechanism, cutting mechanism includes drive connection's drive division and cutter disc, wherein, cutter disc rotationally sets up the bottom of lawn mower body, cutter disc be according to the cutter disc in claim 10.