CN219421612U

CN219421612U - Mower blade assembly

Info

Publication number: CN219421612U
Application number: CN202320320451.8U
Authority: CN
Inventors: 陈建华
Original assignee: Fujian Everstrong Lega Power Equipments Co Ltd
Current assignee: Fujian Everstrong Lega Power Equipments Co Ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-07-28
Anticipated expiration: 2033-02-27

Abstract

The utility model relates to the technical field of mowers, and in particular to a mower blade assembly: the cutter comprises a blade, a cutter disc, a pivot shaft, a torque spring, a connecting piece and a driving device, wherein the cutter disc is circular in shape, the pivot shaft is connected to the edge of the cutter disc, the axis of the pivot shaft is parallel to the axis of the cutter disc, the torque spring is coaxially sleeved and connected to the pivot shaft, the blade is arc-shaped, the blade is connected to the torque spring and can swing along with the pivot shaft, the connecting piece is connected to the upper part of the cutter disc, and the driving device is in transmission connection with the cutter disc through the connecting piece.

Description

Mower blade assembly

Technical Field

The utility model relates to the technical field of mowers, in particular to a mowing blade assembly.

Background

The mower is also called as weeding machine, grass mower, lawn trimmer and the like, is a mechanical tool for trimming lawns, vegetation and the like, and consists of a cutter head, an engine, travelling wheels, a travelling mechanism, a blade, an armrest and a control part.

Chinese patent grant publication No. CN214852843U discloses a mower blade replacement structure comprising a blade holder, a blade body and a fixed disc; the tool apron is of a cylindrical cavity structure with an open top, connecting grooves are uniformly formed in the circumference of a side plate of the tool apron, vertical upward inserted bars are fixedly connected to the bottom surface of each connecting groove, the number of the blade bodies is the same as that of the connecting grooves, connecting plates corresponding to the connecting grooves are fixedly connected to the end parts of the blade bodies, inserting holes corresponding to the inserted bars are formed in the connecting plates, pressing blocks corresponding to the connecting grooves one by one are arranged on the outer Zhou Gujie of the fixed disc, inserting grooves corresponding to the inserted bars are formed in the pressing blocks, in the above patent, because the end connection of blade body is in the connecting plate, when the lawn mower is inoperative, on the one hand the blade exposes outside, causes the potential safety hazard easily, and on the other hand the blade exposes outside, makes blade and other foreign matter contact damage easily during the storage, has reduced the life of blade, consequently, need a lawn mower blade subassembly, solve the blade and expose the potential safety hazard outside and extend the life of blade.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: a mower blade assembly is provided which addresses the potential safety hazards of exposed blades and extends the useful life of the blades.

In order to solve the technical problems, the utility model adopts the following technical scheme: the blade assembly of the mower comprises a blade, a cutter disc, a pivot shaft, a torque spring, a connecting piece and a driving device, wherein the cutter disc is circular;

the pin joint shaft is connected to the edge of the cutterhead, and the axis of the pin joint shaft is parallel to the axis of the cutterhead;

the torque spring coaxial sleeve is connected with the pivot shaft;

the blade is arc-shaped, is connected to the torque spring and can swing along with the pivot shaft;

the connecting piece is connected to the upper part of the cutterhead;

the driving device is in transmission connection with the cutterhead through a connecting piece;

in a first state, the cutting edge of the blade faces the circumferential surface of the cutterhead;

in the second state, the cutting edge of the blade faces the front of the cutter head.

Further, a baffle is included, and in a second state, the blade abuts against the baffle.

Further, the baffle includes limiting plate and fixed plate, the one end of fixed plate connect in the circumference of blade disc, the middle part of limiting plate connect in the middle part of the pivot seat of pivot, the one end of limiting plate be close to the circumference of blade disc connect in the other end of fixed plate.

Further, a groove is formed in the circumferential surface of the cutterhead, and in the first state, the groove is adapted to the tip portion of the blade.

Further, a sponge layer is arranged in the groove.

Further, the driving device is a driving motor.

The utility model has the beneficial effects that: the cutter comprises a torque spring, a blade and a pivot shaft, wherein the blade is connected to the torque spring and swings along with the pivot shaft, the pivot shaft is connected to the edge of the cutter head, through the structure, when the cutter head rotates, the cutter head generates centrifugal force, the centrifugal force enables the torque spring to deform, the blade is ejected, the blade edge of the cutter head faces towards the front of the rotation of the cutter head to realize mowing, when the cutter head does not rotate, the cutter head does not generate centrifugal force, the blade is not ejected under the elastic potential energy of the torque spring, the blade edge of the blade faces towards the circumferential surface of the cutter head, so that potential safety hazards caused by the blade edge of the blade in a non-weeding state are avoided, the blade edge of the blade is not damaged by contact of other foreign objects in the non-weeding state, and the service life of the blade is prolonged.

Drawings

FIG. 1 is a top view of a mower blade assembly according to an embodiment of the present utility model;

fig. 2 is a schematic perspective view of a mower blade assembly according to an embodiment of the present utility model.

Description of the reference numerals:

1. a blade; 2. a cutterhead; 3. a pin joint shaft; 4. a torque spring; 5. a connecting piece; 6. a baffle; 61. a fixing plate; 62. a limiting plate; 7. a groove; 71. a sponge layer.

Detailed Description

In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.

Referring to fig. 1 to 2, a blade 1 assembly of a mower comprises a blade 1, a cutter head 2, a pivot shaft 3, a torque spring 4, a connecting piece 5 and a driving device, wherein the cutter head 2 is circular in shape;

the pin joint shaft 3 is connected to the edge of the cutterhead 2, and the axial direction of the pin joint shaft 3 is parallel to the axial direction of the cutterhead 2;

the torque spring 4 is coaxially sleeved and connected with the pivot shaft 3;

the blade 1 is arc-shaped, and the blade 1 is connected to the torque spring 4 and can swing along with the pivot shaft 3;

the connecting piece 5 is connected to the upper part of the cutterhead 2;

the driving device is in transmission connection with the cutterhead 2 through a connecting piece 5;

in the first state, the cutting edge of the blade 1 faces the circumferential surface of the cutter head 2;

in the second state, the cutting edge of the blade 1 faces the front of the rotation of the cutter head 2.

The connecting piece is a transmission shaft, and the driving device is in transmission connection with the cutterhead through the transmission shaft.

In the above embodiment, the blade 1 is connected to the middle of the torque spring 4, when the driving device drives the cutter 2 to rotate, the blade 1 corresponds to the cutter 2 to rotate, in the first state, when the driving device does not drive the cutter 2 to rotate, the torque spring 4 cannot be shaped due to the action of centrifugal force, the blade 1 cannot be opened, the blade edge of the cutter 2 faces the circumferential surface of the cutter 2, in the second state, when the driving device drives the cutter 2 to rotate, centrifugal force is generated by the rotation of the cutter 2, the torque spring 4 deforms under the action of the centrifugal force to pop out and open the blade 1 for weeding, the blade edge of the cutter 2 faces the front of the rotation of the cutter 2, and by the structure, when the mower is not in operation, the cutter 2 does not rotate, centrifugal force is not generated, and under the elastic potential energy of the torque spring 4, the blade edge faces the circumferential surface of the cutter 2, so that the potential safety hazard generated by the blade edge of the cutter 1 in the non-weeding state is avoided, and the service life of the cutter 1 is prolonged.

As an alternative embodiment, a shutter 6 is included, said blade 1 being in a second condition resting against said shutter 6.

In the above embodiment, the baffle 6 restricts the swing of the blade 1, improving the mowing efficiency.

As an alternative embodiment, the baffle 6 includes a limiting plate 62 and a fixing plate 61, one end of the fixing plate 61 is connected to the circumferential surface of the cutterhead 2, the middle part of the limiting plate 62 is connected to the middle part of the pivot seat of the pivot shaft 3, and one end of the limiting plate 62, which is close to the circumferential surface of the cutterhead 2, is connected to the other end of the fixing plate 61.

In the above embodiment, the middle part of the limiting plate 62 is connected with the pivot seat of the pivot shaft 3 and the fixing plate 61, so that the stability of the baffle 6 is maintained.

As an alternative embodiment, the circumferential surface of the cutterhead 2 is provided with grooves 7, which grooves 7 in the first state are adapted to the nose portion of the cutterhead 1.

In the above embodiment, the blade 1 is prevented from being worn and dulled at the edge of the blade in the non-weeding state, and the mowing efficiency is reduced.

As an alternative embodiment, a sponge layer 71 is provided in the recess 7.

In the above embodiment, the tip portion may be brought into contact with the sponge layer 71, thereby further protecting the tip portion of the insert 1 from abrasion at the recess 7 portion.

As an alternative embodiment, the drive means is a drive motor.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.

Claims

1. The mower blade assembly is characterized by comprising a blade, a cutter disc, a pivot shaft, a torque spring, a connecting piece and a driving device, wherein the cutter disc is circular in shape;

the torque spring coaxial sleeve is connected with the pivot shaft;

the connecting piece is connected to the upper part of the cutterhead;

2. The mower blade assembly of claim 1 including a guard against which said blade rests in the second condition.

3. The mower blade assembly of claim 2 wherein said baffle includes a limiting plate and a fixed plate, one end of said fixed plate being connected to the circumferential surface of said cutterhead, the middle of said limiting plate being connected to the middle of the pivoting seat of said pivoting shaft, and one end of said limiting plate adjacent to the circumferential surface of said cutterhead being connected to the other end of said fixed plate.

4. The mower blade assembly of claim 1 wherein said cutter is provided with a groove on its circumferential surface, said groove being adapted to the nose portion of said blade in a first condition.

5. The mower blade assembly of claim 4 wherein said recess is provided with a sponge layer therein.

6. The mower blade assembly of claim 1 wherein said drive means is a drive motor.