CN103629271A - Mechanical brake structure - Google Patents
Mechanical brake structure Download PDFInfo
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- CN103629271A CN103629271A CN201210297515.3A CN201210297515A CN103629271A CN 103629271 A CN103629271 A CN 103629271A CN 201210297515 A CN201210297515 A CN 201210297515A CN 103629271 A CN103629271 A CN 103629271A
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- brake
- base
- linkage
- brake linkage
- extension spring
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Abstract
A mechanical brake structure comprises a base and a brake assembly installed on the base. The mechanical brake structure is characterized in that the brake assembly comprises a round brake disc, a brake lever and a micro switch. The round brake disc is connected with a rotor of a motor. The brake lever is provided with a brake block and rotatably arranged on the outer side of the brake disc in a limiting mode, the lower end of the brake lever is arranged on the base in a rotatable mode, the outer side of the upper end of the brake lever is connected with an inhaul cable assembly, the inner side of the upper end of the brake lever is connected with a tension spring, the tension spring enables the brake lever to rotate inwards all the time, and therefore the trend that the brake block and the brake disc are tightly attached is formed. The micro switch is arranged on the outer side of the brake lever, when the inhaul cable is pulled, and the brake lever rotates outwards, the brake block on the inner side of the brake lever is separated from the brake disc, the outer wall of the brake lever abuts against the micro switch, and a power source is connected, so that the motor works. The mechanical brake structure is simple in structure, clear in principle, reliable in brake function and capable of being widely applied to gardening tools including an electric hoe and others and meets the European Union requirement for braking within two seconds.
Description
Technical field
The invention belongs to garden instrument technical field, specifically a kind of mechanical brake structure, is applicable to electric hoe class garden instrument.
Background technique
Along with growth in the living standard, the greening level that people live to life requires more and more higher, large-scale ecological greenery patches, city, house greenery patches, Road Green Space etc. constantly increase, therefore various garden instruments are also constantly released, and the defect that the mechanical brake mechanism of existing garden instrument exists is: brake was lost efficacy; Switch spanner machine operation effort; Volume is larger.The existing patent No. is Chinese patent < < mechanical brake structure of pruning scissors > > of CN201210002790.8, comprise a brake lever, described brake lever lower end and braking device interlock, described brake lever bottom is provided with brake lever Returnning spring, described brake lever upper end is provided with brake cap, described brake lever outside is provided with one and helps pull a cart, the described upper in-plane of helping pull a cart is provided with an outstanding salient point apical grafting brake cap lower plane, described brake cap top is provided with a sensitive switch that makes pruning shears circuit turn-on, the described left side of helping pull a cart connects a drawing cable mechanism, described drawing cable mechanism is controlled by the switch trigger of being located on pruning shears back handle, the described below connection of rotating bracket institution of helping pull a cart, swinging mounting mechanism is controlled by the front handlebar of being located in front hand grip.This relatively simple for structure, brake reliable and stable, but it can only be applicable on pruning shears, can not be for larger garden instruments such as electric hoes.European Union has increased the requirement of brake in 2 seconds to electric hoe class garden instrument in 2010, and client is after cut-off switch, the blade of rotation need stop the rotation in 2 seconds, the unexpected injury of avoiding long-time rotation to cause, therefore need develop a kind of new mechanical brake structure, meet the requirement of brake in 2 seconds of electric hoe class garden instrument.
Summary of the invention
Technical problem to be solved by this invention is to provide the mechanical brake structure of a kind of gardens electric tool, has simple in structure, the reliable feature of braking, and meets the requirement of European Union's brake in 2 seconds.
The present invention solves the problems of the technologies described above adopted technological scheme: a kind of mechanical brake structure, and comprise base and be arranged on the brake assemblies on base, it is characterized in that described brake assemblies comprises:
One brake disc, is connected with the rotor of motor;
One brake linkage with brake block, the spacing outside of being located at brake disc rotationally, the lower end of brake linkage is arranged on base rotationally, the outside of upper end is connected with traction cable, inner side is connected with an extension spring, this extension spring makes it have all the time and inwardly rotates, the trend that brake block and brake disc are close to;
One sensitive switch, is located at the outside of brake linkage and coordinates with brake linkage, when pulling traction cable, when brake linkage outwards rotates, the brake block of brake linkage inner side is separated with brake disc, and the outer wall of brake linkage and sensitive switch are inconsistent, make power connection machine operation.
As improvement, the right side central of described base forms the circular groove that can insert for brake disc, below the left outer of circular groove, be provided with an attachment post, upper left side is provided with a limited post, the lower end of described brake linkage is provided with the attachment hole coordinating with described attachment post, upper end is provided with the kink matching with limited post, and two through holes about having in the upper end of kink, wherein right through hole is connected with extension spring, effect by extension spring makes the brake block of its inner side be close to mutually trend with brake disc, left through hole is connected with traction cable, the lower end of described brake linkage is nested with on attachment post rotationally.
As improvement, on described base, the left side of brake linkage is provided with the switch groove that can insert for sensitive switch, described sensitive switch is located in switch groove, and be fixed on base by the switch cover of top, on the right side of sensitive switch, be provided with outwardly touch switch, the upper left quarter of described base is provided with the spacing inclined-plane coordinating while rotating with brake linkage, and described brake linkage is under the effect of traction cable and extension spring, take described attachment post as running shaft, between spacing inclined-plane and limited post, rotate.
Improve again, described traction cable is comprised of drag-line and Cable head, Cable head is provided with the draw-in groove that can snap in for the end pipe box of drag-line, described Cable head is through the left through hole of brake linkage, at the other end, by a jump ring, connect and fix, one end of described drag-line snaps in Cable head, and the other end passes base and is connected with handle.
Further improve, described base is provided with the notch that can derive for drag-line, and described drag-line passes notch and by a cable pressing plate, is fixed up.
Finally, the upper right quarter of described base is provided with a bayonet socket, and one end of described extension spring snaps in the right through hole of described brake linkage upper end, and the other end snaps in this bayonet socket fixing.
Compared with prior art, the invention has the advantages that: the rotation by brake linkage realizes brake or sensitive switch is opened, and is provided with extension spring on brake linkage, can realize the Rapid reset of brake linkage, so operation is very rapidly quick, as long as one-off just can be realized.The present invention's practicality simple and reasonable for structure, principle is clear, brake function is reliable, meets the requirement of European Union's brake in 2 seconds, can be widely used in electric hoe class garden instrument.
figure of description
Fig. 1 is the structural representation of the present invention when sensitive switch is opened;
Fig. 2 is the structural representation of the present invention under braking state;
Fig. 3 is the STRUCTURE DECOMPOSITION schematic diagram of figure of the present invention;
Fig. 4 ~ 8th, fundamental diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As shown in the figure, a kind of mechanical brake structure, comprise base 1 and be arranged on the brake assemblies on base 1, brake assemblies comprises the critical pieces such as brake disc 2, brake linkage 3, extension spring 4, traction cable and sensitive switch 8, brake disc 2 is circular, be arranged in the circular groove 1.1 of base 1 right side central, be connected with the rotor of motor, the inner side of brake linkage 3 is provided with brake block 3.1, below the left outer of circular groove 1.1, be provided with an attachment post 1.2, upper left side is provided with a limited post 1.3, the lower end of brake linkage 3 is provided with the attachment hole 3.2 coordinating with attachment post 1.2, upper end is provided with the kink matching with limited post 1.3, and in the upper end of kink, have two through holes 3.4 in left and right and 3.3, wherein right through hole 3.3 is connected with extension spring 4, left through hole 3.4 is connected with traction cable 5, the lower end of brake linkage 3 is nested with on attachment post 1.2 rotationally by attachment hole 3.2, by the effect of extension spring 4, make the brake block 3.1 and brake disc 2 phase snug fit trend of its inner side, the upper right quarter of base 1 is provided with a bayonet socket 1.4, one end of extension spring 4 snaps in the right through hole 3.3 of brake linkage 3 upper ends, the other end snaps in this bayonet socket 1.4 fixing, and this extension spring 4 makes brake linkage 3 have all the time inwardly rotation, the trend that brake block 3.1 and brake disc 2 are close to, traction cable is comprised of Cable head 6 and drag-line 5, Cable head 6 is provided with the draw-in groove 6.1 that can snap in for the end pipe box of drag-line 5, Cable head 6 is through the left through hole 3.4 of brake linkage 3, after the other end is by jump ring 7 clampings, be fixed in left through hole 3.4, base 1 is provided with the notch 1.6 that can derive for drag-line 5, drag-line 5 is also fixed by a cable pressing plate 9 up through notch 1.6, one end of drag-line 5 snaps in Cable head 6 and is connected with brake linkage 3 like this, the other end passes base 1 and is connected with dead-man's handle 13, when pulling drag-line 5 by dead-man's handle 13, when brake linkage 3 is outwards rotated, the brake block 3.1 of brake linkage 3 inner sides is separated with brake disc 2, and the outer wall of brake linkage 3 will be inconsistent with sensitive switch 8, power connection machine operation,
On base 1, the left side of brake linkage 3 is provided with the switch groove 1.5 that can insert for sensitive switch 8, sensitive switch 8 is located in switch groove 1.5, be positioned at the outside of brake linkage 3, and be fixed on base 1 by the switch cover 10 of top, on switch cover 10, offer three through holes 10.1, base 1 is provided with corresponding tapped hole 1.7, by three tapping screws 11, pass through hole 10.1, be screwed in tapped hole 1.7 switch cover 10 is connected and fixed, in the corner of switch cover 10, be also provided with the penetration hole 10.2 that can pass for the attachment post 1.2 on base 1, after the lower end of brake linkage 3 is nested with on attachment post 1.2 like this, can push down by the switch cover 10 of top, make brake linkage 3 more stable when rotating, can slippage, on the right side of sensitive switch 8, be provided with outwardly touch switch 8.1, the upper left quarter of base 1 is provided with the spacing inclined-plane 1.8 coordinating while rotating with brake linkage 3, brake linkage 3 is under the effect of traction cable 5 and extension spring 4, take attachment post 1.2 as running shaft, between spacing inclined-plane 1.8 and limited post 1.3, rotate.
During installation, as Fig. 4 first passes Cable head 6 the left through hole 3.4 of brake linkage 3, then jump ring 7 is stuck in the draw-in groove of Cable head 6, then one end of extension spring 4 is snapped in to the right through hole 3.3 of brake linkage 3; As Fig. 5, the attachment hole of brake linkage 3 3.2 is aimed to the attachment post 1.2 of bases 1 and put into, the other end of extension spring 7 is snapped in the bayonet socket 1.4 of base 1 fixing; As Fig. 6, the sensitive switch 8 that has connected inductance and elastic cable paper 12 is put into the position of the switch groove 1.5 of base 1; As Fig. 7, the line cloth of sensitive switch 8 is good, then switch cover 10 is covered, stamp tapping screw 11 lockings; As Fig. 8, the end pipe box of drag-line 5 is snapped in the draw-in groove 6.1 of Cable head 6, then press the position wiring of base 1, with cable pressing plate 9, push down the pipe box cap of traction cable 5, then with tapping screw locking, finally load onto the motor of brake disc 2, the assembling of whole like this mechanical brake mechanism has just completed.
Working principle is such: by dead-man's handle 13, drive drag-line 5 displacements, drag-line drives brake linkage 3 to rotate along axis K-K alignment outward, now brake block 3.1 leaves brake disc 2, remove skidding, brake linkage 3 offsets with the trigger switch 8.1 of sensitive switch 8 simultaneously, electric motor starting drives workpiece rotation, as Fig. 1; When unclamping dead-man's handle 13, brake linkage 3 reset that turns right under the effect of extension spring 4, the brake block 3.1 on brake linkage 3 is pasting brake disc 2 tightly, play damping function, motor speed is declined rapidly, by sensitive switch 8, cut off the electricity supply simultaneously, and stopped in 2 seconds.
Claims (6)
1. a mechanical brake structure, comprises base and is arranged on the brake assemblies on base, it is characterized in that described brake assemblies comprises:
One brake disc, is connected with the rotor of motor;
One brake linkage with brake block, the spacing outside of being located at brake disc rotationally, the lower end of brake linkage is arranged on base rotationally, the outside of upper end is connected with traction cable, inner side is connected with an extension spring, this extension spring makes it have all the time and inwardly rotates, and makes brake block and brake disc keep the trend of being close to;
One sensitive switch, is located at the outside of brake linkage and coordinates with brake linkage, when pulling traction cable, when brake linkage outwards rotates, the brake block of brake linkage inner side is separated with brake disc, and the outer wall of brake linkage and sensitive switch are inconsistent, make power connection machine operation.
2. mechanical brake structure according to claim 1, the right side central that it is characterized in that described base forms the circular groove that can insert for brake disc, below the left outer of circular groove, be provided with an attachment post, upper left side is provided with a limited post, the lower end of described brake linkage is provided with the attachment hole coordinating with described attachment post, upper end is provided with the kink matching with limited post, and two through holes about having in the upper end of kink, wherein right through hole is connected with extension spring, effect by extension spring makes the brake block of its inner side be close to mutually trend with brake disc, left through hole is connected with traction cable, the lower end of described brake linkage is nested with on attachment post rotationally.
3. mechanical brake structure according to claim 2, it is characterized in that on described base, the left side of brake linkage is provided with the switch groove that can insert for sensitive switch, described sensitive switch is located in switch groove, and be fixed on base by the switch cover of top, on the right side of sensitive switch, be provided with outwardly touch switch, the upper left quarter of described base is provided with the spacing inclined-plane coordinating while rotating with brake linkage, described brake linkage is under the effect of traction cable and extension spring, take described attachment post as running shaft, between spacing inclined-plane and limited post, rotate.
4. mechanical brake structure according to claim 1, it is characterized in that described traction cable is comprised of drag-line and Cable head, Cable head is provided with the draw-in groove that can snap in for the end pipe box of drag-line, described Cable head is through the left through hole of brake linkage, at the other end, by a jump ring, connect and fix, one end of described drag-line snaps in Cable head, and the other end passes base and is connected with dead-man's handle.
5. mechanical brake structure according to claim 4, is characterized in that described base is provided with the notch that can derive for drag-line, and described drag-line is also fixed by a cable pressing plate up through notch.
6. mechanical brake structure according to claim 2, is characterized in that the upper right quarter of described base is provided with a bayonet socket, and one end of described extension spring snaps in the right through hole of described brake linkage upper end, and the other end snaps in this bayonet socket fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210297515.3A CN103629271B (en) | 2012-08-21 | 2012-08-21 | A kind of mechanical brake structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210297515.3A CN103629271B (en) | 2012-08-21 | 2012-08-21 | A kind of mechanical brake structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103629271A true CN103629271A (en) | 2014-03-12 |
| CN103629271B CN103629271B (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210297515.3A Expired - Fee Related CN103629271B (en) | 2012-08-21 | 2012-08-21 | A kind of mechanical brake structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103629271B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470962A (en) * | 2017-08-29 | 2017-12-15 | 宁波动电器有限公司 | The brake structure and chain saw of a kind of chain saw |
| CN107806482A (en) * | 2017-11-20 | 2018-03-16 | 清华大学苏州汽车研究院（相城） | A kind of drawing sheet brake system for eliminating mechanical hysteresis |
| CN112938662A (en) * | 2021-03-31 | 2021-06-11 | 山东英特力光通信开发有限公司 | Portable electric retractable table for special optical cable |
| WO2023197732A1 (en) * | 2022-04-15 | 2023-10-19 | 浙江白马科技有限公司 | Garden tool |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4419857A (en) * | 1981-08-07 | 1983-12-13 | Outboard Marine Corporation | Lawn mower with combined engine brake and ignition control |
| US4979596A (en) * | 1989-06-27 | 1990-12-25 | Tecumseh Products Company | Safety brake system for an engine |
| US5086890A (en) * | 1990-03-14 | 1992-02-11 | Briggs & Stratton Corporation | Engine braking system |
| JPH08105465A (en) * | 1994-10-04 | 1996-04-23 | Kubota Corp | Flywheel brake for vertical shaft engine |
| GB2333335B (en) * | 1998-01-20 | 2002-05-15 | Lansing Linde Ltd | Band brake assembly for a vehicle |
| CN2827677Y (en) * | 2005-06-27 | 2006-10-18 | 孔钊 | Brake device on chain saw |
| CN201801736U (en) * | 2010-09-19 | 2011-04-20 | 林海潮 | Motor brake assembly of industrial sewing machine |
| CN102550307A (en) * | 2012-01-06 | 2012-07-11 | 浙江亚特电器有限公司 | Mechanical brake structure of pruning scissors |
| CN202746459U (en) * | 2012-08-21 | 2013-02-20 | 宁波奇亚园林工具有限公司 | Mechanical brake structure |
-
2012
- 2012-08-21 CN CN201210297515.3A patent/CN103629271B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4419857A (en) * | 1981-08-07 | 1983-12-13 | Outboard Marine Corporation | Lawn mower with combined engine brake and ignition control |
| US4979596A (en) * | 1989-06-27 | 1990-12-25 | Tecumseh Products Company | Safety brake system for an engine |
| US5086890A (en) * | 1990-03-14 | 1992-02-11 | Briggs & Stratton Corporation | Engine braking system |
| JPH08105465A (en) * | 1994-10-04 | 1996-04-23 | Kubota Corp | Flywheel brake for vertical shaft engine |
| GB2333335B (en) * | 1998-01-20 | 2002-05-15 | Lansing Linde Ltd | Band brake assembly for a vehicle |
| CN2827677Y (en) * | 2005-06-27 | 2006-10-18 | 孔钊 | Brake device on chain saw |
| CN201801736U (en) * | 2010-09-19 | 2011-04-20 | 林海潮 | Motor brake assembly of industrial sewing machine |
| CN102550307A (en) * | 2012-01-06 | 2012-07-11 | 浙江亚特电器有限公司 | Mechanical brake structure of pruning scissors |
| CN202746459U (en) * | 2012-08-21 | 2013-02-20 | 宁波奇亚园林工具有限公司 | Mechanical brake structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470962A (en) * | 2017-08-29 | 2017-12-15 | 宁波动电器有限公司 | The brake structure and chain saw of a kind of chain saw |
| CN107806482A (en) * | 2017-11-20 | 2018-03-16 | 清华大学苏州汽车研究院（相城） | A kind of drawing sheet brake system for eliminating mechanical hysteresis |
| CN107806482B (en) * | 2017-11-20 | 2024-04-02 | 清华大学苏州汽车研究院（相城） | Stretching type sheet brake system capable of eliminating mechanical hysteresis |
| CN112938662A (en) * | 2021-03-31 | 2021-06-11 | 山东英特力光通信开发有限公司 | Portable electric retractable table for special optical cable |
| WO2023197732A1 (en) * | 2022-04-15 | 2023-10-19 | 浙江白马科技有限公司 | Garden tool |
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| Publication number | Publication date |
|---|---|
| CN103629271B (en) | 2016-03-02 |
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Granted publication date: 20160302 Termination date: 20170821 |