CN111937564B - Automatic winding grass trimmer - Google Patents
Automatic winding grass trimmer Download PDFInfo
- Publication number
- CN111937564B CN111937564B CN202010948384.5A CN202010948384A CN111937564B CN 111937564 B CN111937564 B CN 111937564B CN 202010948384 A CN202010948384 A CN 202010948384A CN 111937564 B CN111937564 B CN 111937564B
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- CN
- China
- Prior art keywords
- grass
- motor
- winding
- cap assembly
- wheel assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 244000025254 Cannabis sativa Species 0.000 title claims abstract description 111
- 238000004804 winding Methods 0.000 title claims abstract description 50
- 230000000903 blocking effect Effects 0.000 claims abstract description 22
- 238000009966 trimming Methods 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000010009 beating Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/416—Flexible line cutters
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/416—Flexible line cutters
- A01D34/4166—Mounting or replacement of the lines
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
Abstract
本发明公开了一种自动绕线打草机，包括打草头，打草头壳体靠近电机的端面上设置有棘齿，棘齿具有齿形表面和摩擦表面；当第一开关启动时，电机带动绕线轮组件和敲击帽组件以第一方向转动，阻挡件与棘齿的摩擦表面相接触，使打草头的整体得以转动，此时为工作模式；当第二开关启动时，电机带动绕线轮组件和敲击帽组件以第二方向转动，阻挡件与棘齿的齿形表面相接触，此时打草头壳体无法跟随敲击帽组件转动，从而使敲击帽组件脱离与打草头壳体的啮合，进而使绕线轮组件与打草头壳体形成相对转动来将打草绳绕装至绕线轮组件上，此时为自动绕线模式。
The present invention discloses an automatic winding grass trimmer, comprising a grass trimmer head, wherein a ratchet is arranged on the end surface of the grass trimmer head shell close to the motor, and the ratchet has a toothed surface and a friction surface; when a first switch is started, the motor drives the winding wheel assembly and the knocking cap assembly to rotate in a first direction, and a blocking member contacts the friction surface of the ratchet, so that the grass trimmer head as a whole can rotate, and this is a working mode; when a second switch is started, the motor drives the winding wheel assembly and the knocking cap assembly to rotate in a second direction, and the blocking member contacts the toothed surface of the ratchet, and at this time the grass trimmer head shell cannot rotate with the knocking cap assembly, so that the knocking cap assembly is disengaged from the grass trimmer head shell, and then the winding wheel assembly and the grass trimmer head shell form relative rotation to wind the grass trimmer rope onto the winding wheel assembly, and this is an automatic winding mode.
Description
Technical Field
The invention relates to the technical field of garden machinery, in particular to an automatic winding grass mowing machine.
Background
The grass trimmer is a common gardening tool, and the main principle is that a motor or an engine is used for driving a grass trimming head of the grass trimmer to rotate at a high speed. The flexible cutting line is wound on the reel, the reel is accommodated in the grass-cutting head, the end part of the flexible cutting line extends out through the hole in the grass-cutting head shell, and when the grass-cutting head rotates at a high speed, the flexible cutting line rotates at a high speed, so that the cutting effect is realized.
When the grass trimmer performs grass trimming operation, the grass trimming rope on the grass trimming head is gradually consumed due to abrasion. When the user performs a certain period of work, the user needs to replace the new grass rope and wind the grass rope on the spool. Traditional grass trimmer, the user need go to manual rotation spool in order to make the rope of beating grass twine to the spool, and troublesome operation, winding speed is slow, thereby also brings certain risk because the staff contacts the head of beating grass at winding in-process. In some grass mowers with automatic winding modes, the switch and locking mechanism that implement the automatic winding mode are complex and inconvenient for the user to operate.
In this regard, the chinese patent publication No. CN111133880a discloses a grass trimmer comprising: grass cutting head; the driving device is used for driving the grass cutting head to rotate by taking an axis as a shaft; the operating device is used for being operated by a user to control the grass cutting machine; the grass cutting head comprises a spool and a head shell, the spool is used for winding a grass cutting rope, and the head shell is used for accommodating at least part of the spool and is provided with a threading hole for the grass cutting rope to pass through; the driving device comprises a motor, the motor is provided with an output shaft, the grass cutting machine is provided with an automatic winding mode, and in the automatic winding mode, the motor drives at least one of the spool and the head shell to enable the spool and the head shell to rotate relatively so as to wind the grass cutting rope to the spool; the grass trimmer also comprises: a winding switch for controlling the automatic winding mode to be turned on or off; an operating member which controls the start of the winding switch when operated; and a locking mechanism capable of locking at least one of the head housing or the spool and triggering the winding switch to cause relative rotation between the head housing and the spool when the operating member is operated. According to the technical scheme disclosed in the patent, although automatic winding of the grass cutting head can be realized, the locking structure of the grass cutting head basically needs to be controlled by manually operating an operating member, in the specific embodiment of the grass cutting head, the locking mechanism always limits the rotation of the upper end face (such as the component 121) of the head shell through a movable component (such as the locking pin 171), in the actual use process, the initial position of the upper end face of the head shell cannot be well controlled, the movable component always cannot be accurately and once in limit fit with the limit part on the upper end face of the head shell, the operation experience is affected, the structure of the technical scheme is complex, and the manufacturing and assembly are inconvenient.
In view of the above, there is a need for improvement.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an automatic winding grass mower which has a simple structure and is more convenient to use, and the problems existing in the prior art can be effectively solved.
The technical scheme adopted for solving the technical problems is as follows: an automatic wire winding grass trimmer, comprising: grass cutting head; the motor is used for driving the grass cutting head to rotate by a central shaft; the first switch is used for controlling the motor to rotate at a first speed and in a first direction; the second switch is used for controlling the motor to rotate at a second speed and in a second direction; wherein the second switch has a higher start-up priority than the first switch;
The grass cutting head comprises: the reel assembly is fixedly connected with the output shaft of the motor and is used for winding a straw rope; a grass cutting head housing for receiving at least a portion of the reel assembly and forming a wire hole through which the grass cutting rope passes; the knocking cap assembly is arranged between the reel assembly and the grass-mowing head shell, and partially extends out of the grass-mowing head shell, the initial state of the knocking cap assembly is meshed with the grass-mowing head shell, and the knocking cap assembly rotates along with the reel assembly and can move along the central shaft direction to be separated from the meshing with the grass-mowing head shell; return means for driving said knocking cap assembly away from said reel assembly so as to engage said grass cutting head housing; a motor cover covering the outside of the motor;
The motor cover is provided with a blocking piece, the end face, close to the motor, of the grass cutting head shell is provided with a ratchet, and the ratchet is provided with a tooth-shaped surface and a friction surface; when the first switch is started, the motor drives the reel assembly and the knocking cap assembly to rotate in a first direction, and the blocking piece is contacted with the friction surface of the ratchet, so that the whole grass cutting head can rotate, and the grass cutting head is in a working mode; when the second switch is started, the motor drives the reel assembly and the knocking cap assembly to rotate in a second direction, the blocking piece is in contact with the tooth-shaped surface of the ratchet, the grass cutting head shell cannot rotate along with the knocking cap assembly at the moment, so that the knocking cap assembly is separated from meshing with the grass cutting head shell, and the reel assembly and the grass cutting head shell rotate relatively to wind the grass cutting rope onto the reel assembly, and an automatic winding mode is adopted at the moment.
In the above technical scheme, further, the grass mowing head shell comprises a grass mowing head base and a fastening cover which are mutually buckled, the upper end face of the grass mowing head base is provided with the ratchet, and the fastening cover is provided with an inclined surface structure meshed with the boss on the knocking cap assembly.
In the above technical scheme, further, the grass-mowing head base or the fastening cover is provided with an outgoing line block, and the outgoing line block is provided with a funnel-shaped large-chamfer line hole.
In the above technical scheme, further, the reel assembly comprises an upper partition plate, a middle partition plate, a lower partition plate and a reel base, wherein a spline housing is arranged on the lower partition plate, and a spline shaft meshed with the spline housing is arranged on the knocking cap assembly.
In the above technical scheme, further, the reel assembly is provided with 6 wire inlets.
In the above technical scheme, further, the blocking piece is a blocking piece fixedly installed below the motor cover, the blocking piece is provided with a bending part, and the bending part is used for contacting with the ratchet.
In the above technical scheme, further, the motor cover comprises a grass protecting cover, and the baffle plate is detachably arranged on the protecting cover.
In the above technical solution, further, the second speed is lower than the first speed.
In the technical scheme, further, the grass cutting head base component is matched with the winding wheel component through the bearing, a rigid body is formed, concentricity is good, and vibration caused by the concentricity of the grass cutting head base component is greatly reduced.
In the above technical scheme, further, the automatic winding control switch is the second switch, which is designed above the aluminum pipe of the grass trimmer, so that the control is reliable and simple, and no redundant structure is needed.
The beneficial effects of the invention are as follows:
1. The structure is simple, the operation is convenient, no redundant operation is needed when the automatic winding machine is used, and automatic winding can be realized only by opening the second switch;
2. The invention adopts the cooperation of the baffle plate and different end surfaces of the ratchet to realize the instant-on-instant-use of an automatic winding mode, thereby solving the problem that the initial position of the grass cutter shell in the prior art is not well confirmed;
3. the wire wheel assembly is directly locked on the output shaft of the motor, has good concentricity and rigidity, and greatly reduces vibration caused by non-concentricity;
4. The outgoing line block is provided with a funnel-shaped large chamfer angle, so that the penetration of a straw rope is facilitated. The design is simple, and the threading passing probability is greatly improved;
5. The reel assembly is provided with 6 wire inlets, and the 6 wire inlets are arranged at any positions for wire insertion, so that blind wire insertion effect can be achieved, and the reel assembly is more humanized.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an exploded detail view of the grass trimmer of the present invention.
Fig. 3 is an exploded view of the grass cutting head of the present invention.
Fig. 4 is an exploded view of the grass cutting head of another angle of the present invention.
Fig. 5 is a detailed view of the grass cutting head base of the present invention.
Fig. 6 is a detailed view of the outlet block of the present invention.
Fig. 7 is a detail of the flap of the present invention.
In the drawings, motor 1, grass protection cover 2, stop plate 31, bending part 4, screw 5, shaft sleeve 6, screw 7, bearing 8, grass head base 9, wire outlet block 91, wire hole 10, upper baffle 11, middle baffle 12, lower baffle 121, spline housing 13, wire wheel base 14, limit cover 15, return spring 16, knocking cap component 161, boss 162, spline shaft 17, fastening cover 171, inclined plane structure 18, grass cutter 19, grass head 20, grass beating rope 21, switch trigger 22, button switch 24, reel component 25, hexagonal nut 26, motor cover 27, output shaft 28, ratchet, 281, friction surface 282, tooth surface 29.
Detailed Description
Referring to fig. 1-7, embodiments of the present invention are shown: an automatic wire wound grass trimmer 18 comprising: a grass cutting head 19; a motor 1 for driving the grass-cutting head 19 to rotate about a central axis 29; the first switch is a switch trigger 21 arranged in the middle of the grass cutter connecting rod and used for controlling the motor 1 to rotate at a first speed and in a first direction; the second switch is a button switch 22 arranged at the lower end of the grass cutter connecting rod and used for controlling the motor 1 to rotate at a second speed and in a second direction; wherein, the second switch has a higher starting priority than the first switch, that is, when the second switch is in the on state, the switch trigger 21 cannot control the working state of the motor 1 no matter the switch trigger 21 is pressed down intentionally or unintentionally; wherein the second speed is substantially lower than the first speed;
Wherein, the grass cutting head 19 includes:
The reel assembly 24 is fixedly connected with the output shaft 27 of the motor 1 and is used for winding a grass rope, and the specific connection mode of the reel assembly and the motor is that the output shaft 27 penetrates through the reel assembly 24, and then the reel assembly 24 is locked on the output shaft 27 through a hexagonal nut 25;
A grass cutting head housing for accommodating at least part of the reel assembly 24 and formed with a wire hole 91 through which the grass cutting rope 20 passes; a knocking cap assembly 16 disposed between said reel assembly 24 and said grass-cutting head housing and partially protruding outside said grass-cutting head housing, said knocking cap assembly 16 being engaged with said grass-cutting head housing in an initial state, said knocking cap assembly 16 being rotatable with said reel assembly 24 and movable in an axial direction of said central shaft 19 out of engagement with said grass-cutting head housing; specifically, the grass cutting head housing comprises a grass cutting head base 8 and a fastening cover 17 which are mutually fastened, the upper end surface of the grass cutting head base 8 is provided with a ratchet 28, and the fastening cover 17 is provided with a bevel structure 171 meshed with a boss 161 on the knocking cap assembly 16;
return means, in particular a return spring 15, for driving said knocking cap assembly, 16 away from said reel assembly 24, so as to engage with said grass-cutting head housing;
The motor cover 26 covers the outside of the motor 1, and plays a role in dust prevention and protection while mounting and positioning the motor 1;
The motor cover 26 is provided with a blocking piece, the upper end face of the grass cutting head base 8 is provided with a ratchet 28, the ratchet 28 is provided with a tooth-shaped surface 282 and a friction surface 281, the blocking piece is specifically structured as a blocking piece 3 fixedly installed below the motor cover 26, the blocking piece 3 is provided with a bending part 31, the bending part 31 is used for contacting with the ratchet 28, and specifically, the blocking piece 3 is preferably a sheet made of a metal material with good heat dissipation performance and certain elasticity, such as aluminum. The ratchet 28 on the grass cutting head base 8 is preferably made of a material with high wear resistance and good heat dissipation, such as aluminum; when the first switch (i.e. the switch trigger 21) is started, the motor 1 drives the reel assembly 24 and the knocking cap assembly 16 to rotate in a first direction, and the blocking piece 3 contacts with the friction surface 281 of the ratchet 28, so that the whole grass-mowing head 19 is rotated, and the grass-mowing head is in a working mode; when the second switch (i.e. button switch 22) is activated, the motor 1 drives the reel assembly 24 and the striking cap assembly 16 to rotate in the second direction, the blocking piece 3 contacts with the tooth-shaped surface 282 of the ratchet 28, and the grass-cutting head housing cannot rotate along with the striking cap assembly 16, so that the striking cap assembly 16 is disengaged from the fastening cover 17, and the reel assembly 24 and the grass-cutting head housing rotate relatively to wind the grass-cutting rope 20 onto the reel assembly 24, which is an automatic winding mode.
Further, the grass cutting head base is provided with an outgoing line block 9, and the outgoing line block 9 is provided with a funnel-shaped large-chamfer line hole 91.
Further, the reel assembly comprises an upper partition plate 10, an intermediate partition plate 11, a lower partition plate 12 and a reel base 13, a spline housing 121 is arranged on the lower partition plate 12, and a spline shaft 162 meshed with the spline housing 121 is arranged on the knocking cap assembly 16.
Furthermore, the reel assembly is provided with 6 wire inlets, and the 6 wire inlets are arranged at any positions for wire insertion, so that a blind wire insertion effect can be realized, and the reel assembly is more humanized; the motor cover 26 further comprises a grass protecting cover 2, and the baffle 3 is detachably arranged on the grass protecting cover 2 through two screws 4.
Further, the grass cutting head base 8 is tightly matched with the reel assembly 24 through the matching of the bearing 7 and the shaft sleeve 5, so that a rigid body is formed, the concentricity is good, and the vibration caused by the non-concentricity of the grass cutting head base 8 is greatly reduced.
Further, the grass trimmer 18 also has a tapping mode for automatically discharging wires in the working mode, which is implemented by tapping the tapping cap assembly 16, and the working principle of the mode is to throw the grass trimming rope out by using centrifugal force, which is not repeated herein.
The foregoing is merely one embodiment of the present invention and is not intended to limit the invention in any way, and simple modifications, equivalent variations or modifications can be made without departing from the technical solution of the present invention, all falling within the scope of the invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010948384.5A CN111937564B (en) | 2020-09-10 | 2020-09-10 | Automatic winding grass trimmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010948384.5A CN111937564B (en) | 2020-09-10 | 2020-09-10 | Automatic winding grass trimmer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111937564A CN111937564A (en) | 2020-11-17 |
| CN111937564B true CN111937564B (en) | 2024-11-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010948384.5A Active CN111937564B (en) | 2020-09-10 | 2020-09-10 | Automatic winding grass trimmer |
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| Country | Link |
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| CN (1) | CN111937564B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12477978B2 (en) | 2022-03-18 | 2025-11-25 | Techtronic Cordless Gp | Power tool and accessory mount device |
| CN117652274A (en) * | 2022-09-08 | 2024-03-08 | 南京泉峰科技有限公司 | Lawn trimmer |
| US12532806B2 (en) | 2023-02-14 | 2026-01-27 | Techtronic Cordless Gp | Power tool and compact power feed trimmer head |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212520005U (en) * | 2020-09-10 | 2021-02-12 | 浙江中坚科技股份有限公司 | Automatic wire winding machine of beating grass |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2714878C (en) * | 2004-09-03 | 2013-02-26 | Proulx Manufacturing, Inc. | Trimmer head for use in flexible line rotary trimmers having improved line loading mechanism |
| US8418370B2 (en) * | 2010-12-22 | 2013-04-16 | Gene HOELSCHER | Retrofitting grass trimming apparatus with spinning support guide |
| US11818979B2 (en) * | 2016-01-22 | 2023-11-21 | Nanjing Chervon Industry Co., Ltd. | Grass trimmer |
| CN111133880B (en) * | 2018-11-06 | 2023-03-17 | 南京泉峰科技有限公司 | Grass trimmer |
| CN111149505B (en) * | 2018-11-08 | 2022-07-15 | 南京泉峰科技有限公司 | a lawnmower |
-
2020
- 2020-09-10 CN CN202010948384.5A patent/CN111937564B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212520005U (en) * | 2020-09-10 | 2021-02-12 | 浙江中坚科技股份有限公司 | Automatic wire winding machine of beating grass |
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| CN111937564A (en) | 2020-11-17 |
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