CN108174693B - Garden tool - Google Patents
Garden tool Download PDFInfo
- Publication number
- CN108174693B CN108174693B CN201711462554.3A CN201711462554A CN108174693B CN 108174693 B CN108174693 B CN 108174693B CN 201711462554 A CN201711462554 A CN 201711462554A CN 108174693 B CN108174693 B CN 108174693B
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- Prior art keywords
- wheel
- elastic element
- large belt
- driving
- transmission
- 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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- 230000007246 mechanism Effects 0.000 claims abstract description 67
- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 230000009471 action Effects 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 5
- 238000010413 gardening Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000005489 elastic deformation Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009333 weeding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
- A01D69/10—Brakes
Abstract
The invention provides a gardening tool which comprises a supporting mechanism, a power mechanism, a transmission mechanism and a braking mechanism, wherein the power mechanism and the transmission mechanism are arranged on the supporting mechanism. Compared with the prior art, the garden tool provided by the invention is propped against the driving arm through the propping block so that the braking mechanism plays a braking role, so that the garden tool provided by the invention has the advantages of higher braking response speed and better braking effect, and the safety performance of the garden tool is improved.
Description
Technical Field
The invention relates to a garden tool, in particular to a mower with a braking mechanism.
Background
The mower is a common gardening tool, is generally driven by a motor or a gasoline engine, and drives a main shaft provided with a cutter to rotate through a belt or a gear and other transmission mechanisms, so as to mow. When the machine is required to be stopped in the operation process, the power supply is firstly cut off. At this time, the cutter still keeps rotating at a high speed for a period of time under the action of inertia, so that a certain potential safety hazard exists. In order to eliminate the safety hazard, a braking mechanism is required to stop the rotation of the cutter in a short time.
Chinese patent 201110000696.4 discloses a brake mechanism, which comprises a friction plate, a brake block matched with the friction plate, a tension spring and a guide support block. When braking, the brake block slides along the guide support block under the action of the tension spring until the brake block abuts against the friction plate. Before the brake block acts, the friction force between the brake block and the guide support block needs to be overcome under the action of the tension spring, so that the braking effect of the braking mechanism has larger delay.
In view of the above, there is a need to devise an improved garden tool to solve the above-mentioned problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a garden tool which has the advantages of high brake response speed and good brake effect.
To achieve the above object, the present invention provides a garden tool comprising: the supporting mechanism comprises a power supporting part and a transmission supporting part; the transmission supporting part protrudes outwards to form a mounting part, and a mounting groove is formed in the mounting part; the power mechanism is arranged on the power supporting part and comprises an output shaft and a driving belt pulley arranged on the output shaft; the transmission mechanism is arranged on the transmission supporting part and comprises a transmission shaft arranged in the mounting groove, a transmission wheel arranged on the transmission shaft and linked with the transmission shaft, and a large belt wheel; the periphery of the driving wheel is outwards protruded to form a supporting block; the large belt wheel is provided with a containing groove for containing the driving wheel; the brake mechanism comprises a friction plate fixedly arranged on the installation part and a brake plate pivotally arranged on the large belt wheel and matched with the friction plate; the brake pad comprises a pivoting part, and a driving arm and a driven arm which are positioned at two sides of the pivoting part; the abutting block is located between the driving arm and the driven arm.
As a further improvement of the invention, the transmission mechanism further comprises an elastic element connecting the large belt pulley and the transmission wheel, wherein one end of the elastic element is arranged on the large belt pulley, and the other end of the elastic element is arranged on the transmission wheel, so that the large belt pulley is movably arranged on the transmission wheel; when the power mechanism works, the driving belt wheel drives the large belt wheel to rotate through the belt, so that the elastic element is elastically deformed, and the driving wheel rotates under the action of the elastic element; at this time, the driving arm and the driven arm are separated from contact with the friction plate under the action of centrifugal force; when the power mechanism stops working, under the action of the elastic element, the driving wheel and the large belt wheel rotate relatively, so that the supporting block supports the driving arm, and the driven arm supports the friction plate.
As a further improvement of the invention, the periphery of the driving wheel radially outwards protrudes to form a first bulge, and a first fixing part is arranged on the first bulge; a second fixing part opposite to the first fixing part is arranged on the large belt wheel; one end of the elastic element is arranged on the first fixing part, and the other end of the elastic element is arranged on the second fixing part.
As a further improvement of the invention, the elastic element is a compression spring; in the rotation direction of the driving wheel, the first fixing part is positioned in front of the second fixing part.
As a further improvement of the invention, the elastic element is a tension spring; in the rotation direction of the driving wheel, the second fixing part is positioned in front of the first fixing part.
As a further improvement of the invention, a first limiting block and a second limiting block opposite to the first limiting block are arranged on the large belt wheel so as to limit the rotation range of the driving wheel relative to the large belt wheel.
As a further improvement of the invention, the periphery of the driving wheel is outwards protruded along the axial direction of the driving wheel to form a clamping block; the clamping block clamps the large belt pulley to prevent the large belt pulley from being separated from the driving wheel.
As a further improvement of the invention, the large belt wheel is provided with a containing cavity for containing the elastic element and a pressing sheet for limiting the elastic element in the containing cavity.
As a further improvement of the invention, a positioning groove is arranged on the side wall of the mounting part; the friction plate is annular, and the inner side wall of the friction plate protrudes outwards to form a positioning block matched with the positioning groove so as to fixedly install the friction plate on the installation part.
As a further improvement of the invention, the power mechanism is an electric motor.
The beneficial effects of the invention are as follows: compared with the prior art, the garden tool provided by the invention is propped against the driving arm through the propping block so that the braking mechanism plays a braking role, so that the garden tool provided by the invention has the advantages of higher braking response speed and better braking effect, and the safety performance of the garden tool is improved.
Drawings
Fig. 1 is a schematic perspective view of a support mechanism, a power mechanism, a transmission mechanism and a brake mechanism according to the present invention.
Fig. 2 is a schematic perspective view of a transmission mechanism and a brake mechanism.
Fig. 3 is a schematic perspective view of another angle of the transmission mechanism and the brake mechanism.
Fig. 4 is a schematic perspective view of the supporting mechanism.
Fig. 5 is a schematic diagram of the cooperation of the supporting mechanism and the friction plate.
Fig. 6 is a schematic perspective view of the drive wheel.
Fig. 7 is a schematic perspective view of another angle of the drive wheel.
Fig. 8 is a schematic perspective view of a large pulley.
Fig. 9 is a schematic perspective view of another angle of the large pulley.
Fig. 10 is a schematic perspective view of a brake pad.
Fig. 11 is a schematic perspective view of a friction plate.
Fig. 12 is a cross-sectional view of the transmission mechanism and the brake mechanism in a stable rotation.
Fig. 13 is a perspective view of the brake mechanism when actuated.
Fig. 14 is a cross-sectional view of the transmission mechanism and the brake mechanism at rest.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the invention shown in the drawings and described in accordance with the drawings are merely exemplary and the invention is not limited to these embodiments.
It should be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to aspects of the present invention are shown in the drawings, and other details not greatly related to the present invention are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, 2 and 3, the gardening tool of the present invention includes a supporting mechanism 10, a power mechanism 20 and a transmission mechanism 30 mounted on the supporting mechanism 10, a braking mechanism 40, and a working mechanism (not shown) mounted on the transmission mechanism 30.
Referring to fig. 4 and 5, the supporting mechanism 10 includes a power supporting portion 11 and a transmission supporting portion 12. The transmission supporting portion 12 is formed with a mounting portion 121 protruding outwards, and the mounting portion 121 is provided with a mounting groove 122 and a plurality of positioning grooves 123. The positioning grooves 123 are located on the outer surface of the side wall of the mounting portion 121 and uniformly distributed around the mounting groove 122. Referring to fig. 1, the power mechanism 20 is mounted on the power support portion 11, and includes an output shaft (not shown) and a driving pulley 21 mounted on the output shaft. The power mechanism 20 may be an electric motor or a gasoline engine.
Referring to fig. 1 to 4 in combination with fig. 14, the transmission mechanism 30 is mounted on the transmission support portion 12, and includes a transmission shaft 31 mounted in the mounting groove 122, a transmission wheel 32 mounted on the transmission shaft 31 and linked with the transmission shaft 31, a large pulley 33 engaged with the driving pulley 21, and an elastic member 34. The transmission shaft 31 is fixedly installed in the installation groove 122 through a bearing (not shown). Referring to fig. 6 and 7, the periphery of the driving wheel 32 is formed with a holding block 321 and a holding block 322 protruding outwards along the axial direction of the driving wheel 32. The protruding directions of the supporting block 321 and the clamping block 322 are opposite, and are respectively located at two sides of the driving wheel 32. The driving wheel 32 is also formed with a first protrusion 323 and a second protrusion 325 protruding outward in the radial direction of the driving wheel 32 at the periphery thereof. The first protrusion 323 is provided with a first fixing portion 324, and a cross section of the first fixing portion 324 is cross-shaped. Referring to fig. 8, 9 and 3, the large pulley 33 is provided with a receiving groove 331 for receiving the driving wheel 32, a receiving cavity 332 for receiving the elastic element 34, a pressing piece 333 for restricting the elastic element 34 in the receiving cavity 332, and a second fixing portion 334 opposite to the first fixing portion 324. The second fixing portion 334 has a cross-shaped cross section and is located in the receiving cavity 332. The pressing piece 333 is fixedly mounted on the large pulley 33 by a screw to limit the elastic element 34 in the accommodating cavity 332, so as to prevent the elastic element 34 from being separated from the accommodating cavity 332 when rotating at a high speed. One end of the elastic element 34 is mounted on the first fixing portion 324, and the other end is mounted on the second fixing portion 334, so that the driving wheel 32 is movably mounted on the large pulley 33, and the driving wheel 32 and the large pulley 33 are coaxial. Referring to fig. 14, in this embodiment, the elastic element 34 is a compression spring; the first fixing portion 324 is located in front of the second fixing portion 334 in the rotational direction of the driving wheel 32. In other embodiments, however, the elastic member 34 may be a tension spring. When the elastic member 34 is a tension spring, the second fixing portion 334 is located in front of the first fixing portion 324 in the rotation direction of the driving wheel 32. Referring to fig. 1 and 3, the clamping block 322 clamps the large pulley 33 to prevent the driving wheel 32 from being separated from the large pulley 33. The large belt pulley 33 is further provided with a first limiting block 335 and a second limiting block 336 opposite to the first limiting block 335, so as to limit the rotation range of the driving wheel 32 relative to the large belt pulley 33. Referring to fig. 14, when the driving wheel 32 and the large pulley 33 are stationary, the elastic deformation of the elastic element 34 is minimal, and the first protrusion 323 abuts against the first limiting block 335. Referring to fig. 12, when the driving wheel 32 and the large pulley 33 stably rotate, the elastic deformation amount of the elastic element 34 is the largest, and at this time, the second limiting block 336 abuts against the second protrusion 325 and pushes the driving wheel 32 to rotate.
Referring to fig. 2, 10 and 11, the brake mechanism 40 includes a friction plate 41 fixedly mounted on the mounting portion 121 and a brake plate 42 pivotally mounted on the large pulley 33 and engaged with the friction plate 41. The friction plate 41 is annular, and a positioning block 411 that mates with the positioning groove 123 is formed on the inner side wall thereof to protrude outward, so as to fix the friction plate 41 on the mounting portion 121. The brake block 42 includes a pivot portion 421, a driving arm 422 and a driven arm 423 disposed on two sides of the pivot portion 421, and the supporting block 321 is disposed between the driving arm 422 and the driven arm 423. The driven arm 423 has a friction wall 424 that cooperates with the friction plate 41. The curvature of the friction wall 424 matches the curvature of the side wall of the friction plate 41 so that the friction wall 424 can closely conform to the friction plate 41. The working mechanism is mounted at an end of the drive shaft 31 remote from the mounting portion 121. The operating mechanism can be a cutter for weeding or a grass mowing rope.
When the gardening tool is started, the driving pulley 21 drives the large pulley 33 to rotate through a belt (not shown), so that the elastic element 34 is elastically deformed, and the driving wheel 32 rotates under the action of the elastic element. At this time, the elastic member 34 gradually changes from the state shown in fig. 14 to the state shown in fig. 12, that is: the elastic element 34 is changed from a state of minimum elastic deformation to a state of maximum elastic deformation. When the garden tool is operated in a steady state, the resilient member 34 and the second protrusion 336 together push the driving wheel 32 to rotate. At this time, the driving arm 422 and the driven arm 423 are separated from the friction plate 41 by centrifugal force.
Referring to fig. 13, when the gardening tool is stopped, since the large pulley 33 is connected to the motor, the rotation speed decreases rapidly, and the driving wheel 32 is connected to the working mechanism, such as the cutting blade, the inertia is large, the rotation speed decreases slowly, and in addition, under the action of the elastic element 34, the driving wheel 32 and the large pulley 33 rotate relatively, so that the supporting block 321 supports against the driving arm 422, and the brake pad 42 rotates around the pivot portion 421 due to the leverage, and the driven arm 423 supports against the friction plate 41. Due to the friction between the friction wall 424 and the friction plate 41, the rotation speed of the driving wheel 32 is rapidly reduced until the driving wheel 32 stops rotating, so that the purpose of stopping the rotation of the working mechanism in a short time is achieved. The abutting block 321 abuts against the driving arm 422 to enable the braking mechanism 40 to act, and the braking pad 42 does not need to overcome any friction force before acting, so that the response speed of the braking mechanism 40 is high.
It should be noted that in other embodiments, the resilient member 34 may be eliminated without affecting the basic braking function of the braking mechanism 40. At this time, when the gardening tool is started, the driving pulley 21 drives the large pulley 33 to rotate, and the second limiting block 336 abuts against the second protrusion 325 to push the driving wheel 32 to rotate. When the gardening tool is stopped, the large belt wheel 33 is connected with the motor, the rotation speed is fast to drop, the driving wheel 32 is connected with the working mechanism, such as the cutting blade, the inertia is large, the rotation speed is slow to drop, the driving wheel 32 and the large belt wheel 33 rotate relatively, the supporting block 321 supports against the driving arm 422, the brake pad 42 rotates around the pivoting portion 421 due to leverage, and the driven arm 423 supports against the friction plate 41. Due to the friction between the friction wall 424 and the friction plate 41, the rotation speed of the driving wheel 32 is rapidly reduced until the driving wheel 32 stops rotating, so that the purpose of stopping the rotation of the working mechanism in a short time is achieved.
In summary, the garden tool of the present invention can make the braking mechanism 40 act by the abutting block 321 abutting against the driving arm 422, so that the braking response speed of the garden tool of the present invention is faster, the braking effect is better, and the safety performance of the garden tool is improved.
It is specifically pointed out that equivalent variations for the invention as taught by those skilled in the art are still within the scope of the present invention as claimed in the claims. The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention 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 invention.
Claims (8)
1. A garden tool, comprising:
the supporting mechanism comprises a power supporting part and a transmission supporting part; the transmission supporting part protrudes outwards to form a mounting part, and a mounting groove is formed in the mounting part;
the power mechanism is arranged on the power supporting part and comprises an output shaft and a driving belt pulley arranged on the output shaft, and the power mechanism is a motor;
the transmission mechanism is arranged on the transmission supporting part and comprises a transmission shaft arranged in the mounting groove, a transmission wheel arranged on the transmission shaft and linked with the transmission shaft, and a large belt wheel; the periphery of the driving wheel is outwards protruded to form a supporting block; the large belt wheel is provided with a containing groove for containing the driving wheel; and
the brake mechanism comprises a friction plate fixedly arranged on the installation part and a brake plate pivotally arranged on the large belt wheel and matched with the friction plate; the brake pad comprises a pivoting part, and a driving arm and a driven arm which are positioned at two sides of the pivoting part; the supporting block is positioned between the driving arm and the driven arm;
the transmission mechanism further comprises an elastic element which is connected with the large belt wheel and the transmission wheel, one end of the elastic element is arranged on the large belt wheel, and the other end of the elastic element is arranged on the transmission wheel, so that the large belt wheel is movably arranged on the transmission wheel; when the power mechanism works, the driving belt wheel drives the large belt wheel to rotate through the belt, so that the elastic element is elastically deformed, and the driving wheel rotates under the action of the elastic element; at this time, the driving arm and the driven arm are separated from contact with the friction plate under the action of centrifugal force; when the power mechanism stops working, under the action of the elastic element, the driving wheel and the large belt wheel rotate relatively, so that the supporting block supports the driving arm, the brake block rotates around the pivoting part, and the driven arm supports the friction plate.
2. A garden tool as claimed in claim 1, wherein: the periphery of the driving wheel radially outwards protrudes to form a first bulge, and a first fixing part is arranged on the first bulge; a second fixing part opposite to the first fixing part is arranged on the large belt wheel; one end of the elastic element is arranged on the first fixing part, and the other end of the elastic element is arranged on the second fixing part.
3. A garden tool as claimed in claim 2, wherein: the elastic element is a pressure spring; in the rotation direction of the driving wheel, the first fixing part is positioned in front of the second fixing part.
4. A garden tool as claimed in claim 2, wherein: the elastic element is a tension spring; in the rotation direction of the driving wheel, the second fixing part is positioned in front of the first fixing part.
5. A garden tool as claimed in claim 1, wherein: the large belt wheel is provided with a first limiting block and a second limiting block opposite to the first limiting block so as to limit the rotation range of the driving wheel relative to the large belt wheel.
6. A garden tool as claimed in claim 1, wherein: the periphery of the driving wheel protrudes outwards along the axial direction of the driving wheel to form a clamping block; the clamping block clamps the large belt pulley to prevent the large belt pulley from being separated from the driving wheel.
7. A garden tool as claimed in claim 1, wherein: the large belt wheel is provided with a containing cavity for containing the elastic element and a pressing sheet for limiting the elastic element in the containing cavity.
8. A garden tool as claimed in claim 1, wherein: a positioning groove is formed in the side wall of the mounting part; the friction plate is annular, and the inner side wall of the friction plate protrudes outwards to form a positioning block matched with the positioning groove so as to fixedly install the friction plate on the installation part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711462554.3A CN108174693B (en) | 2017-12-28 | 2017-12-28 | Garden tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711462554.3A CN108174693B (en) | 2017-12-28 | 2017-12-28 | Garden tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108174693A CN108174693A (en) | 2018-06-19 |
| CN108174693B true CN108174693B (en) | 2024-03-12 |
Family
ID=62548502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711462554.3A Active CN108174693B (en) | 2017-12-28 | 2017-12-28 | Garden tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108174693B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110972722B (en) * | 2019-10-25 | 2021-10-26 | 浙江亚特电器有限公司 | Garden tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000295916A (en) * | 1999-04-13 | 2000-10-24 | Honda Motor Co Ltd | Brake equipment for bush cutter |
| CN1947483A (en) * | 2006-10-16 | 2007-04-18 | 苏州利维科电器有限公司 | Braking device for garden tools |
| CN102119607A (en) * | 2011-01-04 | 2011-07-13 | 浙江亚特电器有限公司 | Brake device for grass cutter |
| CN103168567A (en) * | 2011-12-22 | 2013-06-26 | 浙江三锋实业股份有限公司 | Automatic braking device of gardening tool |
| CN106416628A (en) * | 2016-03-04 | 2017-02-22 | 浙江亚特电器有限公司 | Mowing machine |
| CN207733267U (en) * | 2017-12-28 | 2018-08-17 | 常州格力博有限公司 | Garden instrument |
-
2017
- 2017-12-28 CN CN201711462554.3A patent/CN108174693B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000295916A (en) * | 1999-04-13 | 2000-10-24 | Honda Motor Co Ltd | Brake equipment for bush cutter |
| CN1947483A (en) * | 2006-10-16 | 2007-04-18 | 苏州利维科电器有限公司 | Braking device for garden tools |
| CN102119607A (en) * | 2011-01-04 | 2011-07-13 | 浙江亚特电器有限公司 | Brake device for grass cutter |
| CN103168567A (en) * | 2011-12-22 | 2013-06-26 | 浙江三锋实业股份有限公司 | Automatic braking device of gardening tool |
| CN106416628A (en) * | 2016-03-04 | 2017-02-22 | 浙江亚特电器有限公司 | Mowing machine |
| CN207733267U (en) * | 2017-12-28 | 2018-08-17 | 常州格力博有限公司 | Garden instrument |
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| Publication number | Publication date |
|---|---|
| CN108174693A (en) | 2018-06-19 |
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Address after: No.65-1 Xinggang Road, Zhonglou Economic Development Zone, Changzhou City, Jiangsu Province Applicant after: Gelibo (Jiangsu) Co.,Ltd. Address before: 213023 Jiangsu province Changzhou Xingang Tower Road Economic Development Zone No. 65 Applicant before: CHANGZHOU GLOBE Co.,Ltd. |
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