CN220965616U - Blade fixing structure and mower - Google Patents
Blade fixing structure and mower Download PDFInfo
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- CN220965616U CN220965616U CN202322423791.6U CN202322423791U CN220965616U CN 220965616 U CN220965616 U CN 220965616U CN 202322423791 U CN202322423791 U CN 202322423791U CN 220965616 U CN220965616 U CN 220965616U
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- blade
- connecting piece
- output shaft
- boss
- shaft assembly
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- 244000025254 Cannabis sativa Species 0.000 description 7
- 230000013011 mating Effects 0.000 description 7
- 230000000149 penetrating effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a blade fixing structure and a mower, wherein the blade fixing structure comprises a connecting piece and is connected with a motor output shaft assembly of the mower; at least one blade fixedly connected to the connecting member; the blade is fixedly arranged on the motor output shaft assembly, and the connecting piece is connected with the motor output shaft assembly in an interference fit mode. Compared with the prior art, when the mower disclosed by the utility model works, if the blade is impacted by the outside, the blade can rotate relative to the motor output shaft assembly together with the connecting piece, so that the motor output shaft assembly is buffered, and the whole system is protected.
Description
Technical Field
The utility model relates to a blade fixing structure and a mower, and belongs to the technical field of garden tools.
Background
With the continuous development of electric tool technology, mowers are also becoming more and more widely used.
At present, in the actual working process of mowers on the market, the blades are easy to generate locked rotation due to the fact that objects are impacted in the high-speed rotating process, at the moment, the blades generate opposite acting force, when the force acts on an output shaft assembly between the blades and the power supply device, the output shaft assembly is extremely easy to damage, even when the output shaft assembly transmits the force to the power supply device, the power supply device is extremely easy to damage, and the service life of an electric tool is influenced.
In addition, the blade and the output shaft assembly are not relatively fixed, so that the front side and the back side of the blade can be assembled, and a user can incorrectly assemble the blade, so that the use is affected, and potential safety hazards are brought.
In view of the foregoing, there is a need for improvements in existing blade holding structures to address the above-described problems.
Disclosure of utility model
The utility model aims to provide a blade fixing structure, which is used for enabling a blade to be fixedly connected with a connecting piece in the radial direction of the connecting piece, and then protecting an integral system when a mower works.
To achieve the above object, the present utility model provides a blade fixing structure for a lawn mower, comprising:
the connecting piece is connected with the motor output shaft assembly of the mower;
at least one blade fixedly connected to the connecting member;
the blade is fixedly arranged on the motor output shaft assembly, and the connecting piece is connected with the motor output shaft assembly in an interference fit mode.
As a further improvement of the utility model, the motor output shaft assembly comprises an output shaft and a shaft sleeve sleeved on the output shaft, the output shaft is fixedly matched with the shaft sleeve, and the shaft sleeve is in interference fit with the connecting piece.
As a further improvement of the utility model, the shaft sleeve passes through the connecting piece, the shaft sleeve is provided with a mounting table, the blade is provided with a matching hole matched with the mounting table, and the blade is mounted on the mounting table.
As a further improvement of the present utility model, the blade securing structure further includes a fastener coupled to the motor output shaft assembly to fasten the blade and the connector to the motor output shaft assembly.
As a further improvement of the utility model, the center of the connecting piece is provided with a mounting hole penetrating through the connecting piece, the boss further comprises a positioning boss positioned beside the mounting hole, the blade is provided with a positioning hole matched with the positioning boss, the positioning boss is provided with a fool-proof design, the positioning boss is an arrow boss, and the direction of the arrow boss faces the rotating direction of the blade.
As a further improvement of the utility model, a fixed column is arranged on one side of the connecting piece, which is away from the blade, the mounting hole penetrates through the fixed column, the connecting piece is also provided with a plurality of fan blades which are arranged around the fixed column, and the fan blades, the fixed column and the connecting piece are integrally formed.
As a further improvement of the present utility model, the boss includes a first limit boss and a second limit boss, a first surrounding area near the edge and a second surrounding area inside the first surrounding area are formed on the connecting member, the first limit boss is located in the first surrounding area, the second limit boss is located in the second surrounding area, and the blade is limited between the first limit boss and the second limit boss.
As a further improvement of the utility model, the blade comprises a first blade and a second blade, the first blade and the second blade are stacked up and down and are arranged in a staggered manner, and the first blade and the second blade are limited between the first limiting boss and the second limiting boss, so that the first blade and the second blade are fixedly connected with the connecting piece in the radial direction of the connecting piece.
As a further improvement of the utility model, the first limit boss is arranged in a step shape and is provided with a support table surface, a first stop surface and a second stop surface which are positioned at two sides of the support table surface, wherein the first stop surface and the second stop surface are perpendicular to the support table surface and are vertically arranged; the second limiting boss is provided with a third stop surface extending along the vertical direction, the first blade is limited between the first stop surface and the third stop surface, and the second blade is supported on the supporting table surface and is limited between the second stop surface and the third stop surface.
Another object of the present utility model is to provide a mower having the above blade fixing structure.
To achieve the above object, the present utility model provides a mower comprising:
A body;
blade fixed knot constructs, with the motor is connected, blade fixed knot constructs includes:
the connecting piece is connected with the motor output shaft assembly;
at least one blade fixedly connected to the connecting member;
the blade is fixedly arranged on the motor output shaft assembly, and the connecting piece is connected with the motor output shaft assembly in an interference fit mode.
The beneficial effects of the utility model are as follows: according to the utility model, the boss is arranged on the connecting piece, the blade and the boss are matched and installed to realize fixation, and meanwhile, the connecting piece and the motor output shaft assembly are in interference fit connection, so that when the mower works, if the blade is impacted by the outside, the blade can rotate together relative to the motor output shaft assembly with the connecting piece, the motor output shaft assembly is buffered, and the whole mower system is protected.
Drawings
Fig. 1 is a schematic perspective view of a mower according to the present utility model.
Fig. 2 is an exploded assembly view of the blade securing structure of the mower of fig. 1.
Fig. 3 is a combined schematic view of the blade holding structure of fig. 1.
Fig. 4 is a schematic perspective view of the first blade of fig. 3.
Fig. 5 is a schematic perspective view of the second blade of fig. 3.
Fig. 6 is a schematic perspective view of the connector of fig. 3.
Fig. 7 is a partial enlarged view of circle D in fig. 6.
Fig. 8 is another angular schematic view of the connector of fig. 6.
Fig. 9 is a cross-sectional view of the blade holding structure shown in fig. 3.
Fig. 10 is a cross-sectional view of the bushing of fig. 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-2, the present utility model discloses a mower 100, which comprises a housing 101, a motor 102, a blade fixing structure 103, a grass collection box 104, a traveling assembly 105 and an operating assembly 106.
The blade fixing structure 103 is located in the casing 101, and the blade fixing structure 103 includes a connector 1, and a first blade 2 and a second blade 3 fixedly connected to the connector 1, which are exemplified by a double blade in this embodiment, but in other embodiments, only one blade may be provided, which is not limited herein. The motor 102 is partially accommodated in the casing 101, the motor 102 comprises a motor output shaft assembly 4, the connecting piece 1 is in interference fit connection with the motor output shaft assembly 4, and friction transmission is used, so that when the first blade 2 or the second blade 3 is impacted by the outside, the first blade 2 or the second blade 3 can bring the connecting piece 1 together to rotate relative to the motor output shaft assembly 4 in the radial direction, the motor output shaft assembly 4 is buffered, and the whole system is protected.
The grass collection box 104 is connected with the casing 101 for collecting weeds cut by the blade fixing structure 103. The walking assembly 105 is used for supporting the mower 100 to rotate relative to the ground so that an operator can easily push the mower 100 to mow, and the walking assembly 105 comprises a pair of front wheels 1051 and a pair of rear wheels 1052. The operating assembly 106 is a push rod extending in a rearward direction from the mower 100.
As shown in fig. 3 to 5, the first blade 2 includes a first middle portion 21 provided in a flat plate shape and first cutting portions 22 provided at both ends of the first middle portion 21, the first middle portion 21 being elongated for mounting to the connector 1; the first cutting portion 22 has a first cutting edge at one end thereof facing the rotation direction of the blade for cutting the grass blades, and one end of the first cutting portion 22 facing away from the rotation direction of the blade is gradually reduced in width. The first blade 2 has a first mating hole 23 penetrating the first blade 2 and located at the center, and two sides of the first mating hole 23 have a first positioning hole 24 penetrating the first blade 2.
In order to achieve a better cutting effect and to facilitate discrimination, the second blade 3 is different from the first blade 2 in shape and structure, and the second blade 3 includes a second intermediate portion 31 provided in a flat plate shape and second cutting portions 32 provided at both ends of the second intermediate portion 31. The second intermediate portion 31 has an elongated rectangular shape for attachment to the connecting member 1, the second cutting portion 32 being twisted with respect to the second intermediate portion 31, one end of the second cutting portion 32 facing in the direction of rotation of the blade being provided with a second cutting edge for cutting grass blades. The second blade 3 has a second mating hole 33 penetrating the second blade 3 and located at the center, and two sides of the second mating hole 33 have a second positioning hole 34 penetrating the second blade 3. The second positioning hole 34 may be an arrow hole having a fool-proof function, and the directions of the two arrow holes are opposite, so that the second blade 3 cannot be assembled if it is reversed, and reverse installation can be avoided. The arrow holes are directed in the circumferential direction in the direction of the blade rotation of the second blade 3, the two arrow holes being centrally symmetrical about the center of the second mating hole 33.
In this embodiment, the first blade 2 and the second blade 3 are stacked up and down and are staggered, when cutting, the first blade 2 cuts the grass blades first, and then the second blade 3 cuts the grass blades again, so that a better grass breaking effect can be achieved. Preferably, the first mating hole 23 of the first blade 2 has a size larger than the second mating hole 33 of the second blade 3, and the first positioning hole 24 of the first blade 2 has a size larger than the second positioning hole 34 of the second blade 3.
As shown in fig. 6-8, the connecting piece 1 is in a disc-shaped arrangement, a first surrounding area a near the edge and a second surrounding area B located inside the first surrounding area a are formed on the connecting piece 1, and a rotation indication is provided in the second surrounding area B. The connecting piece 1 is provided with a first limiting boss 11 and a second limiting boss 12, the first limiting boss 11 is located in a first surrounding area A, the second limiting boss 12 is located in a second surrounding area B, and the first blade 2 and the second blade 3 are limited between the first limiting boss 11 and the second limiting boss 12, so that the first blade 2 and the second blade 3 are fixedly connected with the connecting piece 1 in the radial direction of the connecting piece 1.
Specifically, the first limiting boss 11 is arranged in a step shape, and is formed with a supporting table 111, and a first stop surface 112 and a second stop surface 113 that are positioned at two sides of the supporting table 111, wherein the first stop surface 112 and the second stop surface 113 are perpendicular to the supporting table 111, and the first stop surface 112 and the second stop surface 113 are arranged up and down; the second limiting boss 12 is provided with a third stop surface 121 extending in the vertical direction, the first blade 2 is limited between the first stop surface 112 and the third stop surface 121, and the second blade 3 is supported on the support table 111 and is limited between the second stop surface 113 and the third stop surface 121.
Preferably, the first limiting boss 11 includes a first step 114 protruding outward from the connector 1 and a second step 115 continuing to protrude outward from the end of the first step 114, the first stop surface 112 is formed at the junction of the first step 114 and the connector 1, and the second stop surface 113 is formed at the junction of the first step 114 and the second step 115.
In this embodiment, two first limiting bosses 11 are provided and are arranged in the first surrounding area a in a central symmetry manner; two second limiting bosses 12 are also provided, and are arranged in the second surrounding area B in a central symmetry manner. So set up, can carry out spacing to two first cutting portions 22 of first blade 2, also can carry out spacing to two second cutting portions 32 of second blade 3 for first blade 2 and second blade 3 be in the radial direction of connecting piece 1 with connecting piece 1 fixed connection.
The center of the connecting piece 1 is provided with a mounting hole 13 penetrating the connecting piece 1, in this embodiment, the connecting piece 1 is further provided with a first positioning boss 14 and a second positioning boss 15 extending outwards from the first positioning boss 14, and the first positioning boss 14 is located beside the mounting hole 13. The first positioning boss 14 is matched with the first positioning hole 24, and the second positioning boss 15 is matched with the second positioning hole 34, so that the first blade 2 and the second blade 3 can be fixed.
The connecting piece 1 is further provided with a third surrounding area C positioned inside the second surrounding area B, and the first positioning boss 14 and the second positioning boss 15 are both arranged in the third surrounding area C. In other words, the connecting piece 1 is divided into three annular areas from outside to inside, the first limiting boss 11 is located at the outermost layer, the second limiting boss 12 is located at the middle layer, and the first positioning boss 14 is located at the innermost layer, so that when the first blade 2 and the second blade 3 are assembled, the first blade 2 and the second blade 3 can be positioned and limited by using the first limiting boss 11, the second limiting boss 12 and the first positioning boss 14 at different positions, and the assembly stability of the first blade 2, the second blade 3 and the connecting piece 1 is further ensured.
The second positioning boss 15 is an arrow boss, and has a fool-proof design, the direction of the arrow boss faces the rotation direction of the second blade 3, and the second positioning boss 15 and the first positioning boss 14 are respectively provided with two positioning bosses and are arranged in a central symmetry manner with the mounting hole 13. The projection contour of the second positioning boss 15 on the connecting piece 1 is located in the projection contour of the first positioning boss 14 on the connecting piece 1, and the height of the first positioning boss 14 is consistent with the height of the supporting table top 111, so that the second blade 3 can be ensured to be stably supported on the supporting table top 111.
One side of connecting piece 1 deviating from first blade 2 is equipped with fixed column 16, mounting hole 13 runs through fixed column 16, connecting piece 1 still is equipped with around a plurality of fan blade leaves 17 that fixed column 16 set up, fan blade leaves 17 with fixed column 16 with connecting piece 1 integrated into one piece, when mower 100 during operation, fan blade leaves 17 can dispel the heat for the complete machine.
As shown in fig. 9-10, in the present embodiment, the motor output shaft assembly 4 includes an output shaft 41 and a shaft sleeve 42 sleeved on the output shaft 41, the output shaft 41 is fixedly matched with the shaft sleeve 42, and the shaft sleeve 42 is in interference fit with the connecting piece 1, so that the mower 100 can transmit torque by means of friction between the connecting piece 1 and the shaft sleeve 42. When the mower 100 is in operation, the blade is impacted by the outside, and the blade rotates in the radial direction relative to the shaft sleeve 42 together with the connecting member 1. The shaft sleeve 42 is accommodated in the fixed column 16 and penetrates through the connecting piece 1, the shaft sleeve 42 is provided with a first mounting table 421 and a second mounting table 422, and the first mounting table 421 is matched with the first matching hole 23; the second mounting stand 422 is matched with the second matching hole 33; the first blade 2 is mounted on the first mounting base 421, and the second blade 3 is mounted on the second mounting base 422.
The blade fixing structure 103 further comprises a fastener 5, the fastener 5 is connected with the motor output shaft assembly 4, a first aperture section 423 and a second aperture section 424 which are coaxial and sequentially reduced in diameter are arranged in the shaft sleeve 42, the first aperture section 423 is matched with the output shaft 41, the second aperture section 424 is used for the fastener 5 to penetrate through, and a gasket 6 is arranged between the fastener 5 and the second blade 3 so as to fasten the first blade 2, the second blade 3 and the connecting piece 1 on the shaft sleeve of the motor output shaft assembly 4.
In summary, according to the utility model, the boss is arranged on the connecting piece 1, the blade and the boss are mounted in a matched manner, so that the fixing is realized, and the connecting piece 1 and the motor output shaft assembly 4 are in interference fit connection, so that when the blade is impacted by the outside during the work of the mower 100, the blade can rotate together with the connecting piece 1 relative to the motor output shaft assembly 4, thereby playing a role in buffering the motor output shaft assembly 4 and protecting the whole system.
The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model.
Claims (10)
1. A blade fixing structure for a mower, comprising:
the connecting piece is connected with the motor output shaft assembly of the mower;
at least one blade fixedly connected to the connecting member;
the blade is fixedly arranged on the motor output shaft assembly, and the connecting piece is connected with the motor output shaft assembly in an interference fit mode.
2. The blade fixing structure according to claim 1, wherein: the motor output shaft assembly comprises an output shaft and a shaft sleeve sleeved on the output shaft, the output shaft is fixedly matched with the shaft sleeve, and the shaft sleeve is in interference fit with the connecting piece.
3. The blade fixing structure according to claim 2, wherein: the shaft sleeve penetrates through the connecting piece, the shaft sleeve is provided with a mounting table, the blade is provided with a matching hole matched with the mounting table, and the blade is mounted on the mounting table.
4. The blade fixing structure according to claim 1, wherein: the blade securing arrangement further includes a fastener coupled to the motor output shaft assembly to secure the blade and the connector to the motor output shaft assembly.
5. The blade fixing structure according to claim 1, wherein: the center position department of connecting piece is equipped with runs through the mounting hole of connecting piece, the boss is still including being located the location boss of mounting hole side, the blade be equipped with location boss assorted locating hole, the location boss has prevent slow-witted design, the location boss is the arrow boss, the direction orientation of arrow boss the direction of rotation of blade.
6. The blade holding structure according to claim 5, wherein: one side of the connecting piece, which is away from the blade, is provided with a fixed column, the mounting hole penetrates through the fixed column, the connecting piece is also provided with a plurality of fan blade blades which surround the fixed column, and the fan blade blades, the fixed column and the connecting piece are integrally formed.
7. The blade fixing structure according to claim 1, wherein: the boss comprises a first limiting boss and a second limiting boss, a first surrounding area close to the edge and a second surrounding area located on the inner side of the first surrounding area are formed on the connecting piece, the first limiting boss is located in the first surrounding area, the second limiting boss is located in the second surrounding area, and the blade is limited between the first limiting boss and the second limiting boss.
8. The blade holding structure according to claim 7, wherein: the blade includes first blade and second blade, just first blade with the second blade stacks from top to bottom and dislocation set, first blade with the second blade is all limited by first spacing boss with between the spacing boss of second, make first blade with the second blade be in the radial direction of connecting piece with connecting piece fixed connection.
9. The blade holding structure according to claim 8, wherein: the first limiting boss is arranged in a step shape, a supporting table surface, a first stop surface and a second stop surface are formed on two sides of the supporting table surface, the first stop surface and the second stop surface are perpendicular to the supporting table surface, and the first stop surface and the second stop surface are arranged up and down; the second limiting boss is provided with a third stop surface extending along the vertical direction, the first blade is limited between the first stop surface and the third stop surface, and the second blade is supported on the supporting table surface and is limited between the second stop surface and the third stop surface.
10. A mower, comprising:
A body;
the motor is arranged on the body and comprises a motor output shaft assembly;
blade fixed knot constructs, with the motor is connected, blade fixed knot constructs includes:
the connecting piece is connected with the motor output shaft assembly;
at least one blade fixedly connected to the connecting member;
the blade is fixedly arranged on the motor output shaft assembly, and the connecting piece is connected with the motor output shaft assembly in an interference fit mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322423791.6U CN220965616U (en) | 2023-09-06 | 2023-09-06 | Blade fixing structure and mower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322423791.6U CN220965616U (en) | 2023-09-06 | 2023-09-06 | Blade fixing structure and mower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220965616U true CN220965616U (en) | 2024-05-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322423791.6U Active CN220965616U (en) | 2023-09-06 | 2023-09-06 | Blade fixing structure and mower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220965616U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115500146A (en) * | 2021-06-22 | 2022-12-23 | 格力博(江苏)股份有限公司 | Cutting knife assembly and mower |
-
2023
- 2023-09-06 CN CN202322423791.6U patent/CN220965616U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115500146A (en) * | 2021-06-22 | 2022-12-23 | 格力博(江苏)股份有限公司 | Cutting knife assembly and mower |
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