CN103168567B - The dead-man's device of garden instrument - Google Patents
The dead-man's device of garden instrument Download PDFInfo
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- CN103168567B CN103168567B CN201110434092.0A CN201110434092A CN103168567B CN 103168567 B CN103168567 B CN 103168567B CN 201110434092 A CN201110434092 A CN 201110434092A CN 103168567 B CN103168567 B CN 103168567B
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- brake block
- belt wheel
- large belt
- spring
- plane
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Abstract
The dead-man's device of garden instrument, comprise the fixed head being provided with motor and output shaft, output shaft is fixed with large belt wheel, the lower end of motor shaft is stretched out fixed head and is fixed with small pulley, large belt wheel and small pulley are in transmission connection by driving-belt, fixed head is fixed with and is enclosed within output shaft and the drag ring stretched in large belt wheel, the inner chamber of large belt wheel is provided with spring and brake block, brake block one end is flexibly connected with large belt wheel, the other end is supported with spring and is coordinated, the inner chamber of described large belt wheel is also provided with backstop inclined-plane, described brake block is provided with a projection, described projection can be slided on described backstop inclined-plane.The present invention has that structure is simple, safety is high, braking effect is good, production cost is low, long service life and the advantage such as working stability is reliable.
Description
Technical field:
The present invention relates to a kind of dead-man's device of garden instrument, particularly a kind of dead-man's device of mower.
Background technology:
Mower is conventional gardens electric tool, with motor as drive unit, drives the output shaft being provided with blade to carry out operation by belt or gear drive.If need to shut down in operation way, first operator will cut off the electricity supply, and after dump, due under the effect of inertia, output shaft and blade still can run up a period of time, so can not meet security requirement, even can cause personal injury time serious.And in design objective, require that blade can stop operating in the 3-5 second after cutting off the electricity supply, therefore production firm is all provided with brake gear on mower.In the market, the brake gear of mower is provided with the spring that can move radially at large belt wheel inner chamber and is positioned at spring one end and along with the movement of spring towards or away from the brake block of drag ring, the centrifugal force of brake block is greater than the pressure of spring when working properly, brake block and drag ring are separated, and when braking, the centrifugal force of brake block is less than the pressure of spring, and brake block contacts with drag ring.The shortcoming of this structure is: during brake, the centrifugal force of brake block is less than the pressure of spring, and brake block contacts with drag ring by the back stretch only by spring, realizes braking.Although can realize braking, the time that this process need is longer, so just can not meet security requirement, do not reach the requirement that blade in design objective can stop operating in the 3-5 second after cutting off the electricity supply, meanwhile, braking effect is bad, poor stability.Therefore, be necessary to be improved.
Summary of the invention:
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide that a kind of structure is simple, safety is high, braking effect is good, production cost is low, long service life and the dead-man's device of the reliable garden instrument of working stability.
For achieving the above object, present invention employs following technical scheme:
The dead-man's device of garden instrument, comprise the fixed head being provided with motor and output shaft, output shaft is fixed with large belt wheel, the lower end of motor shaft is stretched out fixed head and is fixed with small pulley, large belt wheel and small pulley are in transmission connection by driving-belt, fixed head is fixed with and is enclosed within output shaft and the drag ring stretched in large belt wheel, the inner chamber of large belt wheel is provided with spring and brake block, brake block one end is flexibly connected with large belt wheel, the other end is supported with spring and is coordinated, the inner chamber of described large belt wheel is also provided with backstop inclined-plane, described brake block is provided with a projection, described projection can be slided on described backstop inclined-plane, when working properly, the centrifugal force of described brake block is greater than the pressure of described spring, described spring-compressed, projection on described brake block is slided at the bottom of slope along described backstop inclined-plane, described brake block is separated with described drag ring, and when braking, the centrifugal force of described brake block is less than the pressure of described spring, described spring reset, described brake block contacts with described drag ring and produces initial frictional, this frictional force drives the projection on described brake block to push up slip along described backstop inclined-plane to slope.
Described backstop inclined-plane is formed by the inwall of described large belt wheel protrudes.
Described large belt wheel is also fixed with brake block limiting plate, and described brake block limiting plate is positioned at the upper end of described brake block.
Described spring, brake block, backstop inclined-plane and brake block limiting plate are equipped with two and are all symmetricly set on the inner chamber of described large belt wheel.
The present invention has the following advantages relative to prior art tool:
1, the present invention is owing to being provided with backstop inclined-plane at the inner chamber of large belt wheel, brake block is provided with a projection, when braking, the centrifugal force of brake block is less than the pressure of spring, spring reset, brake block contacts with drag ring and produces initial frictional, and this frictional force drives the projection on brake block to push up slip along backstop inclined-plane to slope, brake block and drag ring are more pressed tighter, strengthen its frictional force and realize braking.The present invention can meet to the requirement realizing in 3 seconds of mower after cutting off the electricity supply braking in design objective, and braking effect is good and safety is high.
2, long service life brake number of times of the present invention reaches 8000 times.
3, the present invention the whole process of brake be all automatically complete do not need additional action, and working stability is reliable.
4, structure of the present invention is simple, production cost is low.
Accompanying drawing illustrates:
Fig. 1 is end view of the present invention.
Fig. 2 is installation diagram of the present invention.
Fig. 3 is partial sectional view of the present invention.
Embodiment:
See Fig. 1 to Fig. 3, according to the dead-man's device of garden instrument provided by the invention, comprise the fixed head 3 being provided with motor 1 and output shaft 2, output shaft 2 is fixed with large belt wheel 4, the lower end of motor shaft 5 is stretched out fixed head 3 and is fixed with small pulley 6, large belt wheel 4 and small pulley 6 are in transmission connection by driving-belt 7, fixed head 3 is fixed with and is enclosed within output shaft 2 and the drag ring 8 stretched in large belt wheel 4, the inner chamber of large belt wheel 4 is provided with spring 9 and brake block 10, brake block 10 one end is flexibly connected with large belt wheel 4, the other end is supported with spring 9 and is coordinated, the inner chamber of large belt wheel 4 is also provided with backstop inclined-plane 11, brake block 10 is provided with a projection 12, protruding 12 can slide on backstop inclined-plane 11, when working properly, the centrifugal force of brake block 10 is greater than the pressure of spring 9, spring 9 compresses, projection 12 on brake block 10 is slided at the bottom of slope along backstop inclined-plane 11, brake block 10 is separated with drag ring 8, and when braking, the centrifugal force of brake block 10 is less than the pressure of spring 9, spring 9 resets, brake block 10 contacts with drag ring 8 and produces initial frictional, this initial frictional drives the projection 12 on brake block 10 to push up slip along backstop inclined-plane 11 to slope, brake block and drag ring 8 are more pressed tighter, strengthen its frictional force and realize braking.
Backstop inclined-plane 11 is formed by the inwall of large belt wheel 4 protrudes, and this set makes backstop inclined-plane 11 Stability Analysis of Structures intensity higher, is unlikely to be shifted or even to rupture when sliding with projection 12 backstop on brake block 10.
Large belt wheel 4 is also fixed with brake block limiting plate 13, and brake block limiting plate 13 is positioned at the upper end of brake block 10, and the track forming brake block 10 motion prevents brake block 10 from moving in the axial direction simultaneously and ensures integrally-built stablizing.Spring 9, brake block 10, backstop inclined-plane 11 and brake block limiting plate 13 are equipped with two and all Central Symmetry is arranged on the inner chamber of large belt wheel 4.
Operation principle of the present invention is: switch on power, motor 1 drives large belt wheel 4 to overcome initial start frictional force by driving-belt 7 to make large belt wheel 4 rise to rapidly more than 2000 turns per minute by static, the centrifugal force that now weight of brake block 10 own produces overcomes starting friction power and drives the projection 12 on brake block 10 to slide at the bottom of slope along backstop inclined-plane 11, brake block 10 and drag ring 8 are departed from, now spring 9 is in compressive state, large belt wheel 4 rotating speed continues to rise to 3300 turns per minute of working speed, startup completes, and is in normal operating conditions.When needs brake, cut off the electricity supply, the rotating speed of large belt wheel 4 declines rapidly, when being down to less than 2000 turns per minute, the centrifugal force of brake block 10 is less than the pressure of spring 9, and spring 9 resets, brake block 10 contacts with drag ring 8 and produces initial frictional, this initial frictional drives the projection 12 on brake block 10 to push up slip along backstop inclined-plane 11 to slope, brake block 10 and drag ring 8 is more pressed tighter, strengthens its frictional force and realize braking.
Above-described embodiment is used for illustrative purposes only; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be limited by each claim.
Claims (1)
1. the dead-man's device of garden instrument, comprise the fixed head (3) being provided with motor (1) and output shaft (2), output shaft (2) is fixed with large belt wheel (4), the lower end of motor shaft (5) is stretched out fixed head (3) and is fixed with small pulley (6), large belt wheel (4) and small pulley (6) are in transmission connection by driving-belt (7), fixed head (3) is fixed with and is enclosed within output shaft (2) and the drag ring (8) stretched in large belt wheel (4), the inner chamber of large belt wheel (4) is provided with spring (9) and brake block (10), brake block (10) one end is flexibly connected with large belt wheel (4), the other end is supported with spring (9) and is coordinated, it is characterized in that: the inner chamber of described large belt wheel (4) is also provided with backstop inclined-plane (11), described brake block (10) is provided with a projection (12), described projection (12) can in the upper slip of described backstop inclined-plane (11), when working properly, the centrifugal force of described brake block (10) is greater than the pressure of described spring (9), described spring (9) compresses, projection (12) on described brake block (10) is slided at the bottom of slope along described backstop inclined-plane (11), described brake block (10) is separated with described drag ring (8), and when braking, the centrifugal force of described brake block (10) is less than the pressure of described spring (9), described spring (9) resets, described brake block (10) contacts with described drag ring (8) and produces initial frictional, this frictional force drives the projection (12) on described brake block (10) to push up slip along described backstop inclined-plane (11) to slope, described backstop inclined-plane (11) is formed by the inwall of described large belt wheel (4) protrudes, described large belt wheel (4) is also fixed with brake block limiting plate (13), described brake block limiting plate (13) is positioned at the upper end of described brake block (10), described spring (9), brake block (10), backstop inclined-plane (11) and brake block limiting plate (13) are equipped with two and are all symmetricly set on the inner chamber of described large belt wheel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110434092.0A CN103168567B (en) | 2011-12-22 | 2011-12-22 | The dead-man's device of garden instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110434092.0A CN103168567B (en) | 2011-12-22 | 2011-12-22 | The dead-man's device of garden instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103168567A CN103168567A (en) | 2013-06-26 |
| CN103168567B true CN103168567B (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110434092.0A Active CN103168567B (en) | 2011-12-22 | 2011-12-22 | The dead-man's device of garden instrument |
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| Country | Link |
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| CN (1) | CN103168567B (en) |
Families Citing this family (5)
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|---|---|---|---|---|
| CN107810844A (en) * | 2017-08-12 | 2018-03-20 | 陈俊 | A kind of smart home potted landscape timing irrigation device |
| CN108174693B (en) * | 2017-12-28 | 2024-03-12 | 格力博(江苏)股份有限公司 | Garden tool |
| CN108248378B (en) * | 2018-01-26 | 2023-08-15 | 浙江三锋实业股份有限公司 | Power-assisted transmission structure of running machine |
| CN210444919U (en) * | 2019-08-01 | 2020-05-05 | 天佑电器（苏州）有限公司 | Brake equipment and lawn mower |
| CN110638237B (en) * | 2019-09-26 | 2021-06-18 | 南通华夏飞机工程技术股份有限公司 | Automatic high stable aviation dining car bottom connecting device of locking |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1366803A (en) * | 2001-01-23 | 2002-09-04 | 本田技研工业株式会社 | Cutting equipment for brush |
| CN200980259Y (en) * | 2006-10-19 | 2007-11-28 | 苏州利维科电器有限公司 | Braking device for garden tool |
| CN101467507A (en) * | 2007-12-27 | 2009-07-01 | 苏州宝时得电动工具有限公司 | Brake device of garden tools |
| CN102057815A (en) * | 2010-11-18 | 2011-05-18 | 常州合力电器有限公司 | Brake device for garden grass cutter |
| CN102119607A (en) * | 2011-01-04 | 2011-07-13 | 浙江亚特电器有限公司 | Brake device for grass cutter |
| CN201911065U (en) * | 2011-01-04 | 2011-08-03 | 浙江亚特电器有限公司 | Mower brake device |
| CN102282975A (en) * | 2011-06-21 | 2011-12-21 | 浙江亚特电器有限公司 | Braking structure of lawn mower |
| CN202455866U (en) * | 2011-12-22 | 2012-10-03 | 浙江三锋实业股份有限公司 | Automatic brake device of garden instrument |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9205611D0 (en) * | 1992-03-14 | 1992-04-29 | Black & Decker Inc | Braking system |
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2011
- 2011-12-22 CN CN201110434092.0A patent/CN103168567B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1366803A (en) * | 2001-01-23 | 2002-09-04 | 本田技研工业株式会社 | Cutting equipment for brush |
| CN200980259Y (en) * | 2006-10-19 | 2007-11-28 | 苏州利维科电器有限公司 | Braking device for garden tool |
| CN101467507A (en) * | 2007-12-27 | 2009-07-01 | 苏州宝时得电动工具有限公司 | Brake device of garden tools |
| CN102057815A (en) * | 2010-11-18 | 2011-05-18 | 常州合力电器有限公司 | Brake device for garden grass cutter |
| CN102119607A (en) * | 2011-01-04 | 2011-07-13 | 浙江亚特电器有限公司 | Brake device for grass cutter |
| CN201911065U (en) * | 2011-01-04 | 2011-08-03 | 浙江亚特电器有限公司 | Mower brake device |
| CN102282975A (en) * | 2011-06-21 | 2011-12-21 | 浙江亚特电器有限公司 | Braking structure of lawn mower |
| CN202455866U (en) * | 2011-12-22 | 2012-10-03 | 浙江三锋实业股份有限公司 | Automatic brake device of garden instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103168567A (en) | 2013-06-26 |
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