CN202746460U - Brake device of electric chain saw - Google Patents
Brake device of electric chain saw Download PDFInfo
- Publication number
- CN202746460U CN202746460U CN201220481576.0U CN201220481576U CN202746460U CN 202746460 U CN202746460 U CN 202746460U CN 201220481576 U CN201220481576 U CN 201220481576U CN 202746460 U CN202746460 U CN 202746460U
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- CN
- China
- Prior art keywords
- connecting rod
- chain saw
- brake
- housing
- electric chain
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a brake device of an electric chain saw. The whole brake device comprises a brake draw bar, a connecting rod, a tension spring, an L-shaped brake plate, a brake steel belt and a pinion, wherein the front end of the brake draw bar is connected with a trigger for switching on and off the electric chain saw to form linkage; the rear end of the brake draw bar is fixedly connected with the head part of the connecting rod; the middle part of the connecting rod is hinged with one end of the brake plate; the other end of the brake plate is hinged with a housing; the middle upper part of the connecting rod is connected with the tension spring, the other end of which is positioned on the housing; a drag hook is arranged on the tail part of the connecting rod; one end of the brake steel belt is connected on the drag hook; the other end of the brake steel belt is arranged around the pinion by one circle and then positioned on the housing. The brake device of the electric chain saw disclosed by the utility model has the characteristics of reasonable design, long service life, reliability in transmission and simplicity in operation.
Description
Technical field
The utility model relates to the braking device of a kind of electric chain saw, particularly a kind of electric chain saw.
Background technique
The work of electric chain saw is by the gear of motor output through small gear and gearwheel formation, and carry out work through driving chain with the sprocket wheel of the coaxial setting of gearwheel, at this, stop fast for realizing the chain rotation after electric saw cuts out, generally all a braking device can be set, simultaneously for the purpose of safety, requirement to this braking device must be satisfied, and tests 25 times, 5 measured values before and after getting, each braking time is not more than 0.15 second, and average braking time is not more than 0.12 second.
At present, the braking device type of electric chain saw is a lot of on the market, but structure is not very perfect, more or less has short, the problems such as transmission is unreliable, complex operation in working life.
The model utility content
For the problems referred to above, the utility model has designed a kind of braking device of electric chain saw, and it has reasonable in design, long service life, reliable transmission, characteristics easy and simple to handle.
For achieving the above object, the utility model is by the following technical solutions:
A kind of braking device of electric chain saw, it is characterized in that: whole braking device comprises bracket arm, connecting rod, extension spring, " L " shape braking vane and brake steel band, the trigger that bracket arm front end wherein and switch electric chain saw are used is connected to form interlock, the rear end of bracket arm and the riveted joint of the head of connecting rod; A riveted joint of the middle part of described connecting rod and braking vane, the other end of braking vane and housing pin joint; Described connecting rod middle and upper part is connected with the described extension spring that the other end is positioned on the housing, and the afterbody of connecting rod is provided with a drag hook, connects of brake steel band on the drag hook, and the other end of brake steel band is positioned on the housing behind small gear one circle.
Above-mentioned braking device also comprises a front brake system, described front brake system is made of finger protecting baffle plate, sensitive switch and front brake connecting rod, wherein one of finger protecting baffle plate is connected with chute on being arranged on housing by the bearing pin of a strap cam, pulls before the finger protecting baffle plate can drive bearing pin and move forward and make the sensitive switch action through cam drive relative to chute; One on described front brake connecting rod is hinged with described bearing pin, and the middle part of the other end of front brake connecting rod and described " L " shape braking vane is hinged.
The pin joint place of above-mentioned braking vane and housing is provided with the torsion spring that resets for braking vane.
The rear end of above-mentioned bracket arm and the riveted joint of the head of connecting rod or welding are connected.
Above-mentioned trigger middle part is hinged with housing.
In the electric chain saw working procedure, trigger is in the state of upwards pulling, the relative connecting rod of bracket arm drivening rod middle part clockwise rotates with the articulating point of braking vane, the extension spring that limiting rod rotates is in extended state, the drag hook of connecting rod afterbody clockwise rotates and makes the brake steel band be in relaxed state, the brake steel band can not got involved the running of small gear, but small gear normal delivery power makes the sprocket wheel running drive chain work with the coaxial setting of gearwheel to gearwheel.
When needs are shut down; unclamp the trigger of electric chain saw; at this moment; connecting rod under the effect of extension spring restoring force relatively its articulating point with braking vane rotate counterclockwise, at this, the rotation of link rod head drive bracket arm rotates counterclockwise together; and make under the trigger and play deenergization; the simultaneously rotation of connecting rod afterbody drives drag hook and upwarps rapidly, brakes thereby the pulling steel band makes its contraction embrace rapidly small gear, finishes shutdown.
And when braking by the front brake system; promoting finger protecting baffle plate drive bearing pin forward slides along the chute on the housing together; at this; the reach action of the relative chute of bearing pin; be with moving cam to move forward synchronously on the one hand; and make its powered-down by cam drive to sensitive switch action; the reach of bearing pin drives the interlock that moves forward together of front brake connecting rod on the other hand; driving braking vane rotates relative to the pin joint point of itself and housing; and then the hinged connecting rod reach in drive and braking vane other end; realization is positioned at the drag hook reach of connecting rod afterbody, embraces rapidly the small gear braking thereby the pulling steel band shrinks it, finishes shutdown.
Two brake system can be carried out the selectivity operation according to corresponding needs before and after the utility model set, and that whole braking device has is reasonable in design, long service life, reliable transmission, characteristics easy and simple to handle.
Description of drawings
Fig. 1, topology layout schematic representation of the present utility model.
Embodiment
As shown in the figure, a kind of braking device of electric chain saw, whole braking device comprise bracket arm 1, connecting rod 3, extension spring 2, " L " shape braking vane 4, brake steel band 12 and small gear 13.
The trigger 14 that bracket arm 1 front end wherein and switch electric chain saw are used is connected to form interlock, and lift power-on on the trigger 14 by being hingedly fixed on the housing 15 at described trigger 14 middle parts, the pressing down powered-down of trigger 14.The head riveted joint of the rear end of bracket arm 1 and connecting rod 3, in practice, both modes that is connected adopt riveted joint or welding as required.
A riveted joint of the middle part of described connecting rod 3 and braking vane 4.Described connecting rod 3 middle and upper parts are connected with the described extension spring 2 that the other end is positioned on the housing, the afterbody of connecting rod 3 is provided with a drag hook 31, drag hook 31 is connected with one that connects brake steel band 12, and the other end of brake steel band 12 is positioned on the housing 15 after enclosing with electric chain saw small gear 13 1.
Described braking vane 4 bottoms and housing 15 are hinged, and are provided with the torsion spring 41 that braking vane 4 resets in both joints.
In the electric chain saw working procedure, trigger 14 is in the state of upwards pulling, bracket arm 1 drivening rod 3 relative connecting rod middle parts clockwise rotate with the articulating point of braking vane 4, the extension spring 2 that limiting rod 3 rotates is in extended state, the drag hook 31 of connecting rod 3 afterbodys clockwise rotates and makes brake steel band 12 be in relaxed state, brake steel band 12 can not got involved the running of brake block, but small gear 13 normal delivery power make sprocket wheel 10 running drive chains 9 work with gearwheel 11 coaxial settings to gearwheel 11.
When needs are shut down; unclamp the trigger 14 of electric chain saw; at this moment; connecting rod 3 under the effect of extension spring 2 restoring forces relatively its articulating point with braking vane 4 rotate counterclockwise, at this, the rotation of connecting rod 3 heads drive bracket arm 1 rotates counterclockwise together; and make 14 times bullet deenergizations of trigger; the simultaneously rotation of connecting rod 3 afterbodys drives drag hook 31 and upwarps rapidly, brakes thereby pulling steel band 12 makes its contraction embrace rapidly small gear 13, finishes shutdown.
Described the utility model braking device also comprises a front brake system, it is made of finger protecting baffle plate 6, sensitive switch 7 and front brake connecting rod 5, wherein 6 one of finger protecting baffle plates are connected with chute 151 on being arranged on housing by the bearing pin 8 of a strap cam 81, pull before the finger protecting baffle plate 6 can drive bearing pin 8 and move forward and make sensitive switch 7 actions through cam 8 transmissions relative to chute 151.5 one on described front brake connecting rod and described bearing pin 8 are hinged, and the middle part of the other end of front brake connecting rod 5 and described " L " shape braking vane 4 is hinged.
When braking by the front brake system; promote finger protecting baffle plate 6 forward and drive bearing pin 8 together along chute 151 slips on the housing; at this; the reach action of bearing pin 8 relative chutes 151; be with moving cam 81 to move forward synchronously on the one hand; and by cam 81 transmissions action makes it send signal and powered-down to sensitive switch 7; the reach of bearing pin 8 drives together reach interlock of front brake connecting rod 5 on the other hand; driving braking vane 4 rotates relative to the pin joint point of itself and housing 15; and then hinged connecting rod 3 reaches in drive and braking vane 4 other ends; realization is positioned at drag hook 31 reaches of connecting rod 3 afterbodys, brakes thereby pulling steel band 12 makes its contraction embrace rapidly small gear 13, finishes shutdown.
To sum up, two brake system can be carried out the selectivity operation according to corresponding needs before and after the utility model set, and that whole braking device has is reasonable in design, long service life, reliable transmission, characteristics easy and simple to handle.
The above, it only is preferred embodiments of the present utility model, be not that any pro forma restriction is done in invention, every foundation know-why of the present invention still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations or modification that above embodiment does.
Claims (5)
1. the braking device of an electric chain saw, it is characterized in that: whole braking device comprises bracket arm, connecting rod, extension spring, " L " shape braking vane, brake steel band and small gear, the trigger that bracket arm front end wherein and switch electric chain saw are used is connected to form interlock, and the rear end of bracket arm and the head of connecting rod are connected; The middle part of described connecting rod and braking vane one is hinged, the other end of braking vane and housing pin joint; Described connecting rod middle and upper part is connected with the described extension spring that the other end is positioned on the housing, and the afterbody of connecting rod is provided with a drag hook, connects of brake steel band on the drag hook, and the other end of brake steel band is positioned on the housing behind small gear one circle.
2. the braking device of a kind of electric chain saw as claimed in claim 1, it is characterized in that: described braking device also comprises a front brake system, described front brake system is made of finger protecting baffle plate, sensitive switch and front brake connecting rod, wherein one of finger protecting baffle plate is connected with chute on being arranged on housing by the bearing pin of a strap cam, pulls before the finger protecting baffle plate can drive bearing pin and move forward and make the sensitive switch action through cam drive relative to chute; One on described front brake connecting rod is hinged with described bearing pin, and the middle part of the other end of front brake connecting rod and described " L " shape braking vane is hinged.
3. the braking device of a kind of electric chain saw as claimed in claim 1 or 2, it is characterized in that: the pin joint place of described braking vane and housing is provided with the torsion spring that resets for braking vane.
4. the braking device of a kind of electric chain saw as claimed in claim 1 is characterized in that: the rear end of described bracket arm and the riveted joint of the head of connecting rod or welding are connected.
5. the braking device of a kind of electric chain saw as claimed in claim 1, it is characterized in that: described trigger and housing are hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220481576.0U CN202746460U (en) | 2012-09-20 | 2012-09-20 | Brake device of electric chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220481576.0U CN202746460U (en) | 2012-09-20 | 2012-09-20 | Brake device of electric chain saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202746460U true CN202746460U (en) | 2013-02-20 |
Family
ID=47705859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220481576.0U Expired - Lifetime CN202746460U (en) | 2012-09-20 | 2012-09-20 | Brake device of electric chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202746460U (en) |
Cited By (3)
| 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 |
| CN109027062A (en) * | 2017-06-09 | 2018-12-18 | 安德烈·斯蒂尔股份两合公司 | The hand guiding work apparatus of arrestment mechanism with cutter and for cutter |
| CN113119231A (en) * | 2019-12-31 | 2021-07-16 | 苏州金莱克精密机械有限公司 | Brake mechanism of chain saw and chain saw |
-
2012
- 2012-09-20 CN CN201220481576.0U patent/CN202746460U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027062A (en) * | 2017-06-09 | 2018-12-18 | 安德烈·斯蒂尔股份两合公司 | The hand guiding work apparatus of arrestment mechanism with cutter and for cutter |
| 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 |
| CN113119231A (en) * | 2019-12-31 | 2021-07-16 | 苏州金莱克精密机械有限公司 | Brake mechanism of chain saw and chain saw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 318000 No. 1155, Haifeng Road, Binhai Industrial Zone, Taizhou Economic Development Zone, Taizhou City, Zhejiang Province Patentee after: Zhejiang greenya Technology Co.,Ltd. Address before: 318000 No. 1155, Haifeng Road, Binhai Industrial Zone, Taizhou Economic Development Zone, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG GREEN YARD POWER MACHINERY TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |
|
| CX01 | Expiry of patent term |