Blade structure, blade and mower

Abstract

The utility model discloses a blade structure, a blade and a mower, and relates to the technical field of mowers, in order to solve the problem that an existing blade is inconvenient to replace, the blade structure comprises a blade, the blade is provided with a mounting hole and a channel communicated with the mounting hole, the channel extends to a cutting edge on one side of the blade, and a connecting structure is mounted on a cutter head. And a mounting hole for passing through the mounting hole to attach the blade to the cutterhead.

Description

TECHNICAL FIELD

[0001] The utility model relates to lawn mower technical field more specifically, relate to a blade structure, blade and lawn mower. BACKGROUND

[0002] Lawn mower is a kind of mechanical tool for trimming lawn, vegetation etc., it is by cutter head, engine, running wheel, running gear, blade, handrail, control part is formed.Lawn is cut by blade, different lawn mower, usually adopt different blade connecting mode, one is fixed connection, blade is fixed relative to cutter head, under this connecting mode, blade cutting effect is good.

[0003] The existing blade is fixed to cutter head by screw, and the blade is a wearing part, often has replacement demand, but the mode of fixing blade by screw makes the replacement of blade inconvenient.

[0004] Therefore, how to solve the problem that the existing blade is inconvenient to replace is the problem that the technical personnel in the field urgently solve at present. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a blade structure, can realize the quick installation and disassembly of blade.

[0006] Another purpose of the utility model is to provide a blade, when the blade wears, the blade can be quickly replaced.

[0007] Another purpose of the utility model is to provide a lawn mower comprising the above-mentioned blade structure, when the blade wears, the blade can be quickly replaced.

[0008] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0009] A kind of blade structure, comprising:

[0010] Blade, blade is equipped with mounting hole and passageway communicated with mounting hole, passageway extends to the side blade of blade;

[0011] Connecting structure is installed on cutter head, for passing through mounting hole, to attach blade on cutter head.

[0012] Preferably, the central axis of the blade extending in the width direction divides the blade into two sides, the mounting hole is located in one side, and the passageway extends towards the direction close to the other side.

[0013] Preferably, further including spring, one end of connecting structure is equipped with first limit part, spring is used to provide the pre-tightening force that makes first limit part move towards cutter head bottom end surface, the maximum external dimension of first limit part is greater than the outer diameter of mounting hole, to limit blade between cutter head bottom end surface and first limit part.

[0014] Preferably, the channel comprises a first channel and a second channel;

[0015] The first channel is in communication with the mounting hole, and the extension direction of the first channel is arranged at an acute angle with the central axis direction of the blade. One end of the second channel is in communication with the first channel, and the other end is in communication with the outside of the blade. The extension direction of the second channel is perpendicular to the central axis direction of the blade.

[0016] Preferably, the connecting structure comprises a first connecting piece with an internal thread structure and a second connecting piece with an external thread structure. The internal thread structure is threadedly connected with the external thread structure. The first connecting piece has a first limiting portion at one end away from the internal thread structure.

[0017] Preferably, the first connecting piece comprises a working portion and a mounting portion arranged at the first limiting portion. The working portion is used to connect the first limiting portion and the mounting portion. The first limiting portion, the working portion and the mounting portion are coaxially arranged. The diameter of the working portion is smaller than that of the first limiting portion. The diameter of the mounting portion is smaller than that of the working portion. The mounting portion is connected with the working portion through a conical surface. The mounting portion is provided with an internal thread structure.

[0018] Preferably, the second connecting piece comprises a second limiting portion and a connecting portion arranged at the second limiting portion. The second limiting portion is coaxially arranged with the connecting portion. The diameter of the connecting portion is smaller than that of the second limiting portion. The connecting portion is provided with an external thread structure at one end away from the second limiting portion.

[0019] Preferably, the center of the mounting hole is located on the central axis of the blade. The diameter of the mounting hole is greater than the outer diameter of the working portion and smaller than the outer diameter of the first limiting portion. The width of the first channel and the second channel is smaller than the outer diameter of the working portion and greater than the outer diameter of the mounting portion.

[0020] Preferably, it further comprises an embedded piece arranged at the cutter head. The embedded piece is internally provided with a slide channel penetrating through the embedded piece. One end of the slide channel is provided with an inner conical surface abutting the conical surface.

[0021] Preferably, one end of the embedded piece away from the inner conical surface is provided with an annular groove for connecting the spring. The annular groove is arranged around the outer periphery of the slide channel.

[0022] Preferably, the embedded piece and the cutter head are of an integrated structure. The embedded piece is a metal piece.

[0023] A blade is provided with a mounting hole and a channel in communication with the mounting hole. The channel extends to one side of the blade.

[0024] A mower comprises the blade structure according to any one of the preceding claims.

[0025] The blade structure provided by the utility model discloses a blade and a connecting structure, the blade is provided with a mounting hole and a channel communicated with the mounting hole, the channel extends to one side of the blade, the blade can be directly sleeved on the connecting structure through the channel, the blade can be quickly mounted and dismounted, the channel extends to one side of the blade, when the cutter head rotates and drives the blade to rotate, the blade is subjected to a radial force and a tangential force, so that the connecting structure does not cause abrasion to the channel of the blade.

[0026] The blade structure is provided in the above manner, and the channel and the mounting hole of the blade can be used to quickly dismount and replace the blade. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced, and obviously, the drawings in the following description are only the embodiments of the utility model, and other drawings can be obtained according to the provided drawings without creative labor for the ordinary skilled in the art.

[0028] Figure 1 It is an exploded view of the blade structure provided by the utility model;

[0029] Figure 2 It is a sectional view of the blade structure provided by the utility model;

[0030] Figure 3 It is a structural schematic view of the blade provided by the utility model;

[0031] Figure 4 It is a structural schematic view of the first connecting piece provided by the utility model;

[0032] Figure 5 It is an installation schematic view of the blade structure provided by the utility model.

[0033] Reference signs:

[0034] 01-cutter head;

[0035] 1-blade, 11-mounting hole, 12-channel, 121-first channel, 122-second channel, 13-round hole, 14-blade edge;

[0036] 2-connection structure, 21-first connecting piece, 211-first limiting part, 212-working part, 213-mounting part, 214-tapered surface, 22-second connecting piece, 221-second limiting part, 222-connecting part;

[0037] 3-spring;

[0038] 4-embedded part, 41-inner tapered surface, 42-annular groove. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0040] In the utility model, unless explicitly defined and limited, the terms such as "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0041] It should be noted that the "up, down" and other orientation words in the following are defined based on the drawings of the specification.

[0042] The core of the utility model is to provide a blade structure, which can realize the quick installation and disassembly of the blade 1. Another core of the utility model is to provide a blade, when the blade 1 is worn, the blade 1 can be quickly replaced. Another core of the utility model is to provide a lawn mower comprising the above-mentioned blade structure, when the blade 1 is worn, the blade 1 can be quickly replaced.

[0043] Please refer to Figures 1 to 5 A kind of blade structure comprising blade 1 and connection structure 2.

[0044] Specifically, the blade 1 is provided with a mounting hole 11 and a channel 12 communicating with the mounting hole 11, the channel 12 extends to a side cutting edge 14 of the blade 1, by providing the channel 12, the blade 1 can be directly sleeved on the connecting structure 2 through the channel 12, realizing the quick installation and disassembly of the blade 1, the channel 12 extends to the side cutting edge 14 of the blade 1, when rotating the cutter 01 in the direction shown in the figure to drive the blade 1 to rotate, the blade 1 is subjected to the radial force F1 and the tangential force F2 of the connecting structure 2, it can be seen that the connecting structure 2 will not cause wear to the channel 12 of the blade 1 when the cutter 01 rotates.

[0045] The connecting structure 2 is installed on the cutter 01 and used for penetrating the mounting hole 11 to attach the blade 1 on the cutter 01, when installing the blade 1, the connecting structure 2 penetrates the channel 12, the connecting structure 2 enters the mounting hole 11 along the channel 12, and finally the blade 1 is installed on the cutter 01 of the mower.

[0046] The blade structure arranged in the above manner can realize the quick disassembly and replacement of the blade 1 through the channel 12 and the mounting hole 11 of the blade 1.

[0047] In the above embodiment, the central axis of the blade 1 extending in the width direction divides the blade 1 into two sides, the mounting hole 11 is located on one side, and the channel 12 extends towards the direction close to the other side.

[0048] It should be noted that the opening of the channel 12 on the side of the cutting edge 14 is farther away from the rotation axis of the cutter 01 than the mounting hole 11, which can effectively prevent the blade 1 from sliding off the connecting structure 2 under the action of centrifugal force when the cutter 01 rotates.

[0049] Further, the spring 3 is further included, one end of the connecting structure 2 is provided with a first limiting portion 211, the spring 3 is used for providing a pre-tightening force for moving the first limiting portion 211 towards the bottom end face of the cutter 01, the maximum external dimension of the first limiting portion 211 is greater than the outer diameter of the mounting hole 11, so as to limit the blade 1 between the bottom end face of the cutter 01 and the first limiting portion 211.

[0050] It can be understood that the connecting structure 2 is movably connected with the cutter head 01 through the spring 3, one end of the connecting structure 2 is provided with a first limiting portion 211 for limiting the blade 1, in the initial state, the spring 3 has a pre-tightening force for moving the first limiting portion 211 to the bottom end face of the cutter head 01, the connecting structure 2 enters the mounting hole 11 through the channel 12, and is used for mounting the blade 1 on the cutter head 01 of the mower, and the blade 1 is limited on the connecting structure 2 through the first limiting portion 211, when it is needed to mount the blade 1, a force opposite to the pre-tightening force is applied to the first limiting portion 211, so that the first limiting portion 211 moves away from the bottom end face of the cutter head 01, the blade 1 is mounted on the connecting structure 2 through the channel 12 and the mounting hole 11, and then the applied force is removed, so that the connecting structure 2 returns to the initial position under the pre-tightening force of the spring 3, and the blade 1 is limited between the bottom end face of the cutter head 01 and the first limiting portion 211, when it is needed to dismount the blade 1, a force opposite to the pre-tightening force is applied to the first limiting portion 211, so that the first limiting portion 211 moves away from the bottom end face of the cutter head 01, and the blade 1 is taken off from the connecting structure 2 through the channel 12 and the mounting hole 11.

[0051] In the above embodiment, the channel 12 includes a first channel 121 and a second channel 122, the first channel 121 is in communication with the mounting hole 11, the extension direction of the first channel 121 is arranged at an acute angle with the extension direction of the central axis A of the blade 1, and the second channel 122 is in communication with the first channel 121 at one end and is in communication with the outside of the blade 1 at the other end, and the extension direction of the second channel 122 is perpendicular to the central axis direction of the blade 1.

[0052] It should be noted that the channel 12 includes the first channel 121 and the second channel 122, and the two side edges of the second channel 122 are perpendicular to the blade edge 14, and since the thickness of the blade edge 14 is relatively thin, if the first channel 121 is parallel to the second channel 122, a relatively large triangular sheet will be generated at the blade edge 14, which is easy to break. Therefore, the channel 12 is arranged in the above structure to reduce the risk of breaking of the blade 1.

[0053] In the above case, the connecting structure 2 includes a first connecting piece 21 with an internal thread structure and a second connecting piece 22 with an external thread structure, the internal thread structure is threadedly connected with the external thread structure, and the first connecting piece 21 is provided with the first limiting portion 211 at one end away from the internal thread structure.

[0054] It can be understood that the first connecting piece 21 and the second connecting piece 22 are connected through threads, when any one of the connecting pieces is worn, the worn connecting piece can be replaced, and the entire connecting structure 2 does not need to be replaced, so as to reduce the cost.

[0055] Further, the first connecting piece 21 comprises a working part 212 and a mounting part 213 arranged at the first limiting part 211, the working part 212 is used to connect the first limiting part 211 and the mounting part 213, the first limiting part 211, the working part 212 and the mounting part 213 are coaxially arranged, the diameter of the working part 212 is smaller than that of the first limiting part 211, the diameter of the mounting part 213 is smaller than that of the working part 212, the mounting part 213 is connected with the working part 212 through a taper surface 214, and the mounting part 213 is provided with an internal thread structure.

[0056] It should be noted that the first connecting piece 21 passes through the cutter head 01, the first connecting piece 21 comprises the first limiting part 211, the working part 212 and the mounting part 213, and the second connecting piece 22 comprises the second limiting part 221 and the connecting part 222, the first limiting part 211 and the second limiting part 221 are arranged at the lower surface and the upper surface of the cutter head 01 respectively.

[0057] In the above embodiment, the second connecting piece 22 comprises the second limiting part 221 and the connecting part 222 arranged at the second limiting part 221, the second limiting part 221 and the connecting part 222 are coaxially arranged, the diameter of the connecting part 222 is smaller than that of the second limiting part 221, and the end of the connecting part 222 away from the second limiting part 221 is provided with an external thread structure.

[0058] It can be understood that the first connecting piece 21 and the second connecting piece 22 are threadedly connected through the mounting part 213 and the connecting part 222.

[0059] On the basis of the above embodiment, the center of the mounting hole 11 is located on the central axis of the blade 1, the diameter of the mounting hole 11 is greater than the outer diameter of the working part 212 and smaller than the outer diameter of the first limiting part 211, and the width of the first channel 121 and the second channel 122 is smaller than the outer diameter of the working part 212 and greater than the outer diameter of the mounting part 213.

[0060] It should be noted that the center of the mounting hole 11 is located on the central axis of the blade 1, the width of the channel 12 is smaller than the outer diameter of the working part 212 and greater than the outer diameter of the mounting part 213; the outer diameter of the mounting hole 11 is greater than the outer diameter of the working part 212 and smaller than the outer diameter of the first limiting part 211, so that when the blade 1 is installed, the mounting part 213 slides from the channel 12, the mounting hole 11 of the blade 1 is sleeved on the working part 212 of the first connecting piece 21, the blade 1 can rotate around the working part 212, and the blade 1 will not fall off from the working part 212 due to the limiting action of the first limiting part 211.

[0061] The blade 1 is further provided with a circular hole 13 on the side away from the mounting hole 11, the diameter of the circular hole 13 is greater than the outer diameter of the working part 212 and less than the outer diameter of the first limiting part 211, the circular hole 13 is used as a backup connection mode, when the mounting hole 11 and the channel 12 are damaged, the blade 1 can be installed by using the circular hole 13, so as to save cost and reduce resource waste.

[0062] In the above embodiment, the insert 4 provided on the cutter head 01 is further included, the insert 4 is internally provided with a sliding channel penetrating through the insert 4, and the sliding channel is provided with an inner taper surface 41 abutting the taper surface 214.

[0063] It can be understood that the working part 212 and the mounting part 213 are connected through the taper surface 214, the insert 4 is provided on the cutter head 01, the taper surface 214 abuts the inner taper surface 41, so that the connecting structure 2 and the insert 4 are more closely abutted, which helps to enhance the stability of the connecting structure 2.

[0064] As a preferred embodiment, the insert 4 is provided with an annular groove 42 at the end away from the inner taper surface 41, the annular groove 42 is arranged around the outer periphery of the sliding channel.

[0065] It should be noted that the spring is arranged between the second limiting part 221 and the insert 4, the spring has a pre-tightening force, the second limiting part 221 is provided with a pushing force by the spring, so that the taper surface 214 of the first connecting piece 21 is tightly abutted with the inner taper surface 41 of the insert 4; the second limiting part 221 is pressed, so that the mounting part 213 of the first connecting piece 21 is extended out of the cutter head 01, and the blade 1 can be withdrawn from the mounting part 213 through the channel 12.

[0066] In the above case, the insert 4 and the cutter head 01 are of an integrated structure, and the insert 4 is a metal piece.

[0067] It can be understood that the insert 4 can be a metal piece, so as to strengthen the hardness of the structure.

[0068] A blade, the blade 1 is provided with a mounting hole 11 and a channel 12 communicating with the mounting hole 11, the channel 12 extends to the side cutting edge 14 of the blade 1.

[0069] It should be noted that this kind of blade 1 can realize quick disassembly and installation of the blade 1 without disassembling the connecting structure 2.

[0070] In summary, the blade structure provided by the utility model, when the blade 1 needs to be installed or removed, the second limiting part 221 is pressed downward to make the second connecting piece 22 move downward, and the first connecting piece 21 is simultaneously driven to move downward, until the mounting part 213 of the first connecting piece 21 is stretched out from the embedded part 4, so that the blade 1 can be removed along the mounting part 213, to realize quick disassembly of the blade 1, or the blade 1 is directly installed on the mounting part 213, then the second limiting part 221 is loosened, the second connecting piece 22 is pushed upward by the restoring force of the spring, and the first connecting piece 21 is simultaneously driven to move upward, until the tapered surface 214 of the first connecting piece 21 is tightly attached to the inner tapered surface 41 of the embedded part 4, so that the installation and replacement of the blade 1 are realized.

[0071] In addition to the blade structure disclosed in each of the above embodiments, the utility model also provides a lawn mower comprising the above blade structure, and the structures of other parts of the lawn mower refer to the prior art, and will not be described herein.

[0072] It should be noted that in the specification, the relationship terms such as first and second are only used to distinguish one entity from another entity, and do not necessarily require or imply any actual relationship or order between the entities.

[0073] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0074] The above provides a detailed introduction to the blade structure, the blade and the lawn mower. The principle and implementation mode of the utility model are described by applying specific examples, and the above embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that, for ordinary skilled persons in the technical field, the utility model can be improved and modified without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. A blade structure, characterized in that, The utility model relates to a cutting blade connecting structure, including: A blade (1) is provided with a mounting hole (11) and a channel (12) communicated with the mounting hole (11), and the channel (12) extends to one side cutting edge (14) of the blade (1); A connecting structure (2) is installed on the cutter head (01) and is used for penetrating the mounting hole (11) to attach the blade (1) on the cutter head (01).

2. The blade structure of claim 1, wherein The central axis of the blade (1) extending in the width direction divides the blade (1) into two sides, the mounting hole (11) is located in one side, and the channel (12) extends towards the direction close to the other side.

3. The blade structure of claim 1, wherein Further including a spring (3), one end of the connecting structure (2) is provided with a first limiting part (211), the spring (3) is used for providing the pre-tightening force that makes the first limiting part (211) move towards the bottom end face of the cutter head (01), and the maximum external dimension of the first limiting part (211) is greater than the outer diameter of the mounting hole (11), so as to limit the blade (1) between the bottom end face of the cutter head (01) and the first limiting part (211).

4. The blade structure of claim 3, wherein The channel (12) includes a first channel (121) and a second channel (122); The first channel (121) is communicated with the mounting hole (11), the extension direction of the first channel (121) is arranged at an acute angle with the central axis direction of the blade (1), one end of the second channel (122) is communicated with the first channel, the other end is communicated with the outside of the blade (1), and the extension direction of the second channel (122) is perpendicular to the central axis direction of the blade (1).

5. The blade structure of claim 4, wherein, The connecting structure (2) includes a first connecting piece (21) with an internal thread structure and a second connecting piece (22) with an external thread structure, the internal thread structure is threadedly connected with the external thread structure, and the first connecting piece (21) is provided with the first limiting part (211) away from the internal thread structure.

6. The blade structure of claim 5, wherein, The first connecting piece (21) includes a working part (212) and a mounting part (213) arranged on the first limiting part (211), the working part (212) is used for connecting the first limiting part (211) and the mounting part (213), the first limiting part (211), the working part (212) and the mounting part (213) are coaxially arranged, the diameter of the working part (212) is smaller than that of the first limiting part (211), the diameter of the mounting part (213) is smaller than that of the working part (212), the mounting part (213) and the working part (212) are connected through a conical surface (214), and the mounting part (213) is provided with the internal thread structure.

7. The blade structure of claim 5, wherein The second connecting piece (22) comprises a second limiting part (221) and a connecting part (222) arranged on the second limiting part (221), the second limiting part (221) and the connecting part (222) are coaxially arranged, and the diameter of the connecting part (222) is smaller than that of the second limiting part (221), and the connecting part (222) is provided with the external thread structure at one end away from the second limiting part (221).

8. The blade structure of claim 6, wherein The center of the mounting hole (11) is located on the central axis of the blade (1), the diameter of the mounting hole (11) is greater than the outer diameter of the working part (212) and smaller than the outer diameter of the first limiting part (211), and the width of the first channel (121) and the second channel (122) is smaller than the outer diameter of the working part (212) and greater than the outer diameter of the mounting part (213).

9. The blade structure of claim 6, wherein, Further comprising an embedded part (4) arranged on the cutter head (01), the embedded part (4) is internally provided with a sliding channel penetrating through the embedded part (4), and one end of the sliding channel is provided with an inner taper surface (41) abutting the taper surface (214).

10. The blade structure of claim 9, wherein, One end of the embedded part (4) away from the inner taper surface (41) is provided with an annular groove (42) for connecting the spring (3), and the annular groove (42) is arranged around the outer periphery of the sliding channel.

11. The blade structure of claim 10, wherein, The embedded part (4) and the cutter head (01) are of an integrated structure, and the embedded part (4) is a metal part.

12. A blade characterized in that, The blade (1) is provided with a mounting hole (11) and a channel (12) communicating with the mounting hole (11), and the channel (12) extends to one side of the blade (1).

13. A lawnmower characterised in that, The blade structure of any one of claims 1-11 is included.

Images