CN100387409C - Chain saw - Google Patents
Chain saw Download PDFInfo
- Publication number
- CN100387409C CN100387409C CNB200610099358XA CN200610099358A CN100387409C CN 100387409 C CN100387409 C CN 100387409C CN B200610099358X A CNB200610099358X A CN B200610099358XA CN 200610099358 A CN200610099358 A CN 200610099358A CN 100387409 C CN100387409 C CN 100387409C
- Authority
- CN
- China
- Prior art keywords
- aforementioned
- cam
- centrifugal clutch
- main shaft
- rotation
- 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B17/00—Chain saws; Equipment therefor
- B27B17/08—Drives or gearings; Devices for swivelling or tilting the chain saw
- B27B17/083—Devices for arresting movement of the saw chain
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B17/00—Chain saws; Equipment therefor
- B27B17/08—Drives or gearings; Devices for swivelling or tilting the chain saw
- B27B17/10—Transmission clutches specially designed for chain saws
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The present invention provides a chain saw which can effectively shorten the braking time of a chain without using an electric brake. The composing of the chain saw is as follows: a centrifugal clutch (18) is externally fitted to a spindle (7), a cam (11) and a connecting body (21) are integrally provided with a sprocket (13), the cam (11) forming a cam teeth 27 at the centrifugal clutch (18) side, the connecting body (21) abutting with a weight member (19) of the centrifugal clutch (18). A same shaped cam teeth (27) are formed on the opposed surface to the cam (11) in the centrifugal clutch (18), a guide groove (24) inclined at a predetermined lead angle from the axial direction of the spindle (7) is provided on the outer peripheral surface of the spindle (7), and a connecting groove (23) is provided on the inner peripheral surface of the centrifugal clutch (18). A steel ball (25) is fitted between both grooves, and a coil spring (26) energizing the centrifugal clutch (18) to the direction departing from the cam (11) is provided between the centrifugal clutch (18) and a washer (22).
Description
Technical field
The present invention relates to a kind of chain saw, it is provided with guide post being built-in with on the housing of motor, thus make chain along this guide post rotation to being cut material cutting.
Background technology
For chain saw, come in the housing of drive electric motor at the closed procedure that has by trigger, to support along lateral shaft by the main shaft that Motor Drive is rotated, side at housing, be provided with the sprocket wheel that rotates by the rotation of main shaft and forwards outstanding flat guide post, and between sprocket wheel and guide post, open and be provided with chain.Therefore, the rotation by sprocket wheel makes the periphery rotation of chain along guide post, thus can be to round log etc. be cut material cutting.
In this chain saw, trigger is carried out opening operation and stops after the power supply of motor, if the chain rotation that is produced by inertia is ignored, then can damage and be cut material or reduce operability, so often use a kind of so-called electronic brake, this electronic brake is set up in parallel the braking circuit with restraining coil in the drive circuit of motor, so that make this braking circuit closure when trigger disconnects, thereby the backward current that flows in motor is braked.
Yet, only depending on electronic brake, chain can not reach with the opening operation of trigger and constantly stop simultaneously, can produce some braking times.So, the present patent application people has proposed the invention of following a kind of clutch apparatus in patent documentation 1, that is: it is provided with first cam integratedly on sprocket wheel, and main shaft be provided with can with second cam of first cam-engaged, this second cam can independently rotate and by to the first cam side application of force, on the outer peripheral face of main shaft, be provided with by rake and the gathering sill that constitutes towards circumferential fastener, and axial link slot is set on the inner peripheral surface of second cam, and crosses over two grooves and make steel ball chimeric.According to this clutch apparatus, when main shaft begins to rotate, by and second cam between the rotation difference that produces second cam is advanced and with first cam-engaged, when main shaft being braked by electronic brake, the rotation official post that relative second cam of main shaft is delayed gets second cam and retreats, and arrives fastener, removes thus and being connected of first cam, compare with the braking time of being undertaken by electronic brake separately, more can shorten the braking time of chain.
[patent documentation 1] TOHKEMY 2004-314452 communique
Yet have following problems in this invention: because the need of work electronic brake of clutch apparatus, if therefore electronic brake generation work is bad, clutch apparatus just can not be worked so, thereby can not shorten braking time.Have again, because the motor restraining coil that needs backward current to use, therefore hindered the miniaturization of motor to a certain extent and cause whole maximization, and can't fully guarantee the main coil of motor and maximum output is restricted.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of chain saw,, also do not need electronic brake, just can shorten the braking time of chain effectively, and can expect to realize miniaturization and increase maximum output even this chain saw has utilized this clutch apparatus.
In order to reach aforementioned purpose, technical scheme 1 described invention is characterised in that, dress makes the hammer parts to the outstanding centrifugal clutch of radiation direction by the rotation of main shaft outside on main shaft, and cam and connector are set integratedly on sprocket wheel, this cam is formed with first cam tooth in centrifugal clutch one side, this connector is outstanding to the outer circumferential side of centrifugal clutch, and when the hammer parts are outstanding, can connect, centrifugal clutch with opposed of cam on, formation can with second cam tooth of first cam tooth engagement, any one party at the inner peripheral surface of the outer peripheral face of main shaft and centrifugal clutch is provided with gathering sill, this gathering sill lead angle according to the rules is provided with and the chimeric connecting portion of gathering sill the opposing party from the axioversion of main shaft, and, be provided with centrifugal clutch to the application of force unit that carries out the application of force away from the direction of cam
When motor starting, poor by the rotation that between main shaft and centrifugal clutch, produces, make centrifugal clutch to the cam side shifting and cam tooth is meshed each other, and the hammer parts of the centrifugal clutch that causes by the rotation of following main shaft is outstanding, make centrifugal clutch and connector integrated, make the rotation of sprocket wheel and integrated spindle axis thus, and stop power supply to motor from driving condition, at this moment, rotation by main shaft reduces the hammer parts that make centrifugal clutch and deviates from from connector, and centrifugal clutch is deviated from from cam by application of force unit, interdict the one rotation of main shaft and sprocket wheel thus.
According to technical scheme 1 described invention, even the braking time that electronic brake also can shorten chain effectively is not set.Particularly by adopting centrifugal clutch, can stablize and carry out reliably from the rotation transmission and the blocking thereof of main shaft to the cam side.And, by no longer needing electronic brake, under same output, can reach the miniaturization of motor and realize whole densification,, can correspondingly fully guarantee the main coil of motor and improve maximum output though restraining coil is not set under same size.
According to technical scheme 2 described inventions, except that the effect of technical scheme 1, can carry out reliably stopping to deviate from of cam when motor is switched on and centrifugal clutch, and improve the trustworthiness of clutch work.
Description of drawings
Fig. 1 is the local longitudinal sectional view of chain saw.
Fig. 2 is the partial lateral cutaway view of the chain saw under the motor off-state, and the right side is the local expanded view of main shaft.
Fig. 3 is the partial lateral cutaway view of the chain saw under the motor closure state, and the right side is the local expanded view of main shaft.
Fig. 4 is the key diagram of the cam tooth shape in expression cam and the centrifugal clutch, and the figure of upside represents the front of cam surface, and the figure of central authorities represents the side, and the figure of downside represents the expanded view of cam part.
Fig. 5 is the key diagram of the modification of expression cam tooth shape, and the figure of upside represents the front of cam surface, and the figure of central authorities represents the side, and the figure of downside represents the expanded view of cam part.
Symbol description is as follows:
1 chain saw, 2 housings, 3 motor, 4 output shafts
7 main shafts, 11 cams, 12 flanges, 13 sprocket wheels
15 guide posts, 16 chains, 18 centrifugal clutches, 21 connectors
23 link slots, 24 gathering sills, 25 steel balls, 26 helical springs
Inclined-plane, 27 cam tooth 28 gentle slopes, 29 abrupt slope
The specific embodiment
Below, based on accompanying drawing embodiments of the present invention are described.
Fig. 1 is the local longitudinal sectional view of an example of expression chain saw, and the figure on right side is the partial lateral cutaway view among Fig. 2.In the chain saw 1, motor 3 (is made as the place ahead with the right side among Fig. 1,2) towards the place ahead to be contained in the housing 2, the place ahead at its output shaft 4, with main shaft 7 by 5,6 on ball bearing be bearing in vertical with output shaft 4 laterally, the bevel gear 8,9 that is individually fixed on output shaft 4 and the main shaft 7 is engaged with each other, the rotation of output shaft 4 can be passed to main shaft 7 thus.And, the end with bevel gear 9 opposite sides in the main shaft 7 is run through housing 2 and is given prominence to the side, the cam 11 of independently rotary tubular is housed outside on this outstanding end 10, this cam 11 extends in inboard (ball bearing 6 sides) and is provided with flange 12, but is fixed with the sprocket wheel 13 that one is rotated with vertical configuration ground on cam 11.On the side of the place ahead of this sprocket wheel 13 and housing 2, flat guide post 15 is fixed with forwards outstanding posture by set bolt 14, between the surrounding edge of sprocket wheel 13 and guide post 15, be provided with the chain 16 of ring-type.Therefore, if sprocket wheel 13 rotations, then chain 16 is arranged at groove 17 rotations of the surrounding edge of guide post 15 along depression.
On the other hand, between cam on the main shaft 7 11 and ball bearing 6, coaxial and with the extraterrestrial discoid centrifugal clutch 18 that diameter is housed greater than the flange 12 of cam 11 of vertical configuration with main shaft 7.This centrifugal clutch 18, be circumferentially to interconnect along three hammer parts 19 that the radiation direction connects movably in periphery by connecting spring 20, thereby known forms to the shrinkage direction application of force, between flange on the cam 11 12 and sprocket wheel 13, but the chimeric rotatably connector 21 that plate-like is installed of one, the internal diameter of this connector 21 opening to the inside is slightly larger than the external diameter of centrifugal clutch 18, and (when motor 3 stops) covering centrifugal clutch 18 in non-contacting mode under normal conditions.The 22nd, expression is clamped and fixed in the packing ring between flange 12 and the connector 21.
On the inner peripheral surface of centrifugal clutch 18, the open axial link slot 23 of ball bearing 6 sides upwards caves in equably in week and is arranged on three positions.On the other hand, on the outer peripheral face of main shaft 7, the gathering sill 24 that tilts with the lead angle of regulation from the axle center of main shaft 7 equally week upwards equably depression be arranged on three positions, chimeric between separately link slot 23 and gathering sill 24 have a steel ball 25 that becomes connecting portion.Therefore, for centrifugal clutch 18, can be at the relative main shaft 7 of the scope that each steel ball 25 rotates in gathering sill 24 along axially moving forward and backward, and rotate with main shaft 7 one, and between packing ring 22 and centrifugal clutch 18, be situated between helical spring 26 as application of force unit is housed, when motor 3 stops, with centrifugal clutch 18 to steel ball 25 be positioned at gathering sill 24 the rear end (for main shaft 7 and centrifugal clutch 18, main shaft 7 axially on will give prominence to end 10 sides and describe as the place ahead.) the position application of force of Fig. 2.
And, on the flange 12 and the mutual opposed faces between the centrifugal clutch 18 of cam 11, as shown in Figure 4, be formed with the identical shaped cam tooth 27 that becomes first cam tooth and second cam tooth respectively.With regard to this cam tooth 27, it is that gentle slope 28 and opposite side are inclined-plane, abrupt slope 29 (inclined plane of the present invention) that shape is a circumferential side, and is arranged at six positions circumferential giving prominence to the interval that equates.Therefore, if centrifugal clutch 18 advances to flange 12 sides, then two cam tooth 27 mesh each other.
In the chain saw 1 that as above constitutes, under the halted state of motor shown in Figure 23, centrifugal clutch 18 is positioned at the going-back position that breaks away from from the flange 12 of cam 11 owing to the application of force of helical spring 26 as previously mentioned, and the hammer parts 19 of centrifugal clutch 18 also are positioned at the punctured position that does not connect with connector 21.
Here,, and come drive motor 3, then make main shaft 7 rotations (right rotation among Fig. 1) by the rotation of output shaft 4 and via bevel gear 8,9 to motor 3 energisings if the not shown trigger of being located at housing 2 is carried out closed procedure.Rotation by this main shaft 7, with centrifugal clutch 18 between to have produced the rotation that centrifugal clutch 18 relative main shafts 7 delay poor, therefore, when each steel ball 25 was forwards rotated along gathering sill 24, centrifugal clutch 18 overcame the application of force of helical spring 26 and advances.Connect at this progressive position and cam 11, cam tooth 27 is engaged with each other.
At this moment, if by with the rotation of the centrifugal clutch 18 of main shaft 7 servo-actuateds, the centrifugal force that acts on hammer parts 19 surpasses by connecting the contraction power that spring 20 produces, and then respectively hammers parts 19 into shape and moves and connect with the inner face of connector 21 to the radiation direction.Therefore, cam 11 is connected with main shaft 7 via centrifugal clutch 18 and connector 21, and sprocket wheel 13 is with cam 11 rotations, and therefore chain 16 can be cut material by chain 16 cuttings along guide post 15 rotations.
If because of cutting finishes to disconnect trigger, and stop power supply to motor 3, then the rotating speed of centrifugal clutch 18 reduces with main shaft 7, and the centrifugal force that acts on hammer parts 19 reduces, therefore, by connecting the application of force of spring 20, hammer parts 19 move and break away from from connector 21 to shrinkage direction, and blocking is via the rotation transmission of connector 21 to cam 11.Along with the work of this centrifugal clutch 18, the application of force centrifugal clutch 18 by helical spring 26 retreats each steel ball 25 when gathering sill 24 rearward rotates, so cam tooth 27 engagement each other is disengaged, and turns back to the position of Fig. 2.At this moment, if even it is poor to produce the rotation of a little between cam 11 and centrifugal clutch 18, the inclined-plane, abrupt slope 29 that then is formed on the cam tooth 27 connects each other, and with cam 11 to away from direction pushing, therefore can carry out deviating from of centrifugal clutch 18 reliably.
Like this, though cam 11 is free rotation state with sprocket wheel 13 relative main shafts 7, but because guide post 15 and and its surrounding edge sliding-contact and the rotation chain 16 between friction, can therefore chain 16 and sprocket wheel 13 be stopped the rotation immediately for chain 16 and the bigger brake force of sprocket wheel 13 effects.
According to the chain saw 1 of mode as mentioned above, dress centrifugal clutch 18 outside on main shaft 7, and cam 11 and the connector 21 be formed with cam tooth 27 be set integratedly on sprocket wheel 13, centrifugal clutch 18 with 11 opposed on cam on form identical shaped cam tooth 27, gathering sill 24 is set on the outer peripheral face of main shaft 7, and gathering sill 24 is set on the inner peripheral surface of centrifugal clutch 18, and make steel ball 25 and two grooves chimeric, and be provided with centrifugal clutch 18 to helical spring 26 away from the direction application of force of cam 11, when motor 3 startings, poor by the rotation that produces between main shaft 7 and the centrifugal clutch 18, centrifugal clutch 18 is advanced and cam tooth is meshed each other, and the outstanding centrifugal clutch 18 and the connector 21 of making of the hammer parts 19 by centrifugal clutch 18 is integral, thus, make sprocket wheel 13 and the rotation of main shaft 7 one, when stopping from driving condition to motor 3 power supplies, rotation minimizing by main shaft 7 makes the hammer parts 19 of centrifugal clutch 18 deviate from from connector 21, and centrifugal clutch 18 is deviated from from cam 11 by helical spring 26, interdict main shaft 7 thus and rotate, thereby even the braking time that electronic brake also can effectively shorten chain 16 is not set with the one of sprocket wheel 13.Particularly, by adopting centrifugal clutch 18, can stablize and carry out reliably from main shaft 7 to the rotation transmission of cam 11 sides with and blocking.And, no longer need electronic brake, under same output, can reach the miniaturization of motor 3 thus and realize whole densification, though and restraining coil is not set under same size, also can correspondingly fully guarantee the main coil of motor 3 and improve maximum output.
Here, particularly the cam tooth 27 of cam 11 and centrifugal clutch 18 is provided with inclined-plane, abrupt slope 29, this inclined-plane 29 is by following rotation difference between cam 11 and the centrifugal clutch 18 butt with cam tooth 27 the other side's side that produce, twocouese is deviated from the direction pushing, can stop the deviating from of cam 11 and centrifugal clutch 18 when motor 3 power supply thus reliably, and improve the trustworthiness of clutch work.
In aforementioned manner, on the outer peripheral face of main shaft, gathering sill is set, and the inner peripheral surface of centrifugal clutch is provided with link slot, but in contrast, also can form to stipulate the gathering sill of lead angle inclination in the centrifugal clutch side, and form axial link slot in the main shaft side, and make the motion of centrifugal clutch advance and retreat by the rotation difference between main shaft and the centrifugal clutch.And, for connecting portion, can replace steel ball, and adopt for example semicircular projection of outer peripheral face one side-prominent setting at the inner peripheral surface or the main shaft of centrifugal clutch, make the gathering sill of this projection and opposite side chimeric, thus the structure that centrifugal clutch is led.
And, the application of force unit of centrifugal clutch is not limited to coil spring, also can adopt other formation such as disk spring and leaf spring, and be not limited to compress the application of force, also can be to carry out stretched force-applying at the rear of centrifugal clutch.
In addition, in aforementioned manner, though being cam, structure is loaded on the outstanding end of main shaft outward, also be not limited to this structure, also the rotating shaft of cam and main shaft split ground can be carried out axle supporting, not make cam and centrifugal clutch opposed on same by main shaft.
The inclined plane that twocouese is deviated from the cam tooth of direction pushing when clutch is worked can be arranged on the cam tooth of any one party of cam and centrifugal clutch.Certainly, can suitably carry out the quantity increase and decrease and the shape change of cam tooth, as shown in Figure 5, also can replace the inclined-plane, abrupt slope 29 of cam tooth 27, and be provided with along axial tabular surface 30.
Claims (2)
1. chain saw, in having the housing of motor, to support along lateral shaft by the main shaft that aforementioned Motor Drive is rotated, and side at aforementioned housing, sprocket wheel and guide post are set, this sprocket wheel and aforementioned main shaft arranged coaxial and rotate along with the rotation of aforementioned main shaft, this guide post is more outstanding than this sprocket wheel, and between aforementioned sprocket wheel and guide post, open and establish chain, rotation by aforementioned sprocket wheel can make the surrounding edge rotation of aforementioned chain along aforementioned guide post, and this chain saw is characterised in that:
Dress makes the hammer parts to the outstanding centrifugal clutch of radiation direction by the rotation of aforementioned main shaft outside on aforementioned main shaft, and cam and connector are set integratedly on aforementioned sprocket wheel, this cam is formed with first cam tooth in aforementioned centrifugal clutch one side, this connector is outstanding to the outer circumferential side of aforementioned centrifugal clutch, and when aforementioned hammer parts are outstanding, can connect, aforementioned centrifugal clutch with opposed of aforementioned cam on, formation can with second cam tooth of aforementioned first cam tooth engagement
Any one party at the inner peripheral surface of the outer peripheral face of aforementioned main shaft and centrifugal clutch is provided with gathering sill, this gathering sill according to the rules lead angle from the axioversion of aforementioned main shaft, be provided with and the chimeric connecting portion of aforementioned gathering sill the opposing party, and, be provided with aforementioned centrifugal clutch to the application of force unit that carries out the application of force away from the direction of aforementioned cam
During aforementioned motor starting, poor by the rotation that between aforementioned main shaft and centrifugal clutch, produces, make aforementioned centrifugal clutch to aforementioned cam side shifting and aforementioned cam tooth is meshed each other, and the hammer parts of the aforementioned centrifugal clutch that causes by the rotation of following aforementioned main shaft is outstanding, make aforementioned centrifugal clutch and aforementioned connector integrated, make the rotation of aforementioned sprocket wheel and aforementioned integrated spindle axis thus, and stop power supply to aforementioned motor from driving condition, at this moment, rotation by aforementioned main shaft reduces the hammer parts that make aforementioned centrifugal clutch and deviates from from aforementioned connector, and aforementioned centrifugal clutch is deviated from from aforementioned cam by aforementioned application of force unit, interdict the one rotation of aforementioned main shaft and sprocket wheel thus.
2. chain saw according to claim 1, it is characterized in that, at least one side in second cam tooth of first cam tooth of cam and centrifugal clutch is provided with the inclined plane, utilization is followed the rotation difference of aforementioned cam and centrifugal clutch and the connecting of this inclined plane of causing and the opposing party's cam tooth, with above-mentioned cam and above-mentioned centrifugal clutch to deviating from the direction pushing mutually.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005295321A JP4801961B2 (en) | 2005-10-07 | 2005-10-07 | Chainsaw |
| JP2005295321 | 2005-10-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1944006A CN1944006A (en) | 2007-04-11 |
| CN100387409C true CN100387409C (en) | 2008-05-14 |
Family
ID=37594383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610099358XA Expired - Fee Related CN100387409C (en) | 2005-10-07 | 2006-07-17 | Chain saw |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1772237B1 (en) |
| JP (1) | JP4801961B2 (en) |
| CN (1) | CN100387409C (en) |
| DE (1) | DE602006004130D1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5910858B2 (en) * | 2012-01-16 | 2016-04-27 | 日立工機株式会社 | Chain saw |
| WO2014142722A1 (en) * | 2013-03-15 | 2014-09-18 | Husqvarna Ab | Chainsaw with self-locking knob assembly |
| CN107414184B (en) * | 2017-08-28 | 2023-06-13 | 浙江动一新能源动力科技股份有限公司 | Chain board compaction structure of chain saw and chain saw |
| RU2750205C1 (en) * | 2020-10-28 | 2021-06-24 | Федеральное государственное бюджетное образовательное учреждение высшего образования «Брянский государственный инженерно-технологический университет» | Working body of portable motor saw |
| RU2770694C1 (en) * | 2021-02-24 | 2022-04-21 | федеральное государственное бюджетное образовательное учреждение высшего образования "Брянский государственный инженерно-технологический университет" | Working body of a portable motor saw |
| US20230356427A1 (en) * | 2022-05-03 | 2023-11-09 | Milwaukee Electric Tool Corporation | Chainsaw sharpening features and devices |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4197640A (en) * | 1978-09-18 | 1980-04-15 | Beaird-Poulan Division, Emerson Electric Co. | Safety braking apparatus for portable chain saw |
| JPH08336809A (en) * | 1995-04-11 | 1996-12-24 | Makita Corp | Brake device for chain saw |
| US5813123A (en) * | 1995-05-11 | 1998-09-29 | Andreas Stihl Ag & Co. | Motor chainsaw with a chain braking device |
| CN2631719Y (en) * | 2003-07-26 | 2004-08-11 | 浙江铁鎯电动工具有限公司 | Brake stopper of electric chain saw |
| EP1468796A1 (en) * | 2003-04-16 | 2004-10-20 | Makita Corporation | Chain saw with a clutch braking mechanism |
| CN2698539Y (en) * | 2004-05-17 | 2005-05-11 | 长春神箭电动工具有限责任公司 | Electric chain saw |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57175705U (en) * | 1981-05-01 | 1982-11-06 | ||
| JPS6255744U (en) * | 1985-09-27 | 1987-04-07 | ||
| JP3263284B2 (en) * | 1995-09-04 | 2002-03-04 | 株式会社マキタ | Electric chainsaw |
| DE10001511A1 (en) * | 2000-01-15 | 2001-07-19 | Stihl Maschf Andreas | Hand-held motor chain saw with centrifugal clutch has torsionally elastic damper element between take-off part and intermediate element |
-
2005
- 2005-10-07 JP JP2005295321A patent/JP4801961B2/en not_active Expired - Fee Related
-
2006
- 2006-07-17 CN CNB200610099358XA patent/CN100387409C/en not_active Expired - Fee Related
- 2006-10-02 EP EP20060020720 patent/EP1772237B1/en not_active Expired - Fee Related
- 2006-10-02 DE DE200660004130 patent/DE602006004130D1/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4197640A (en) * | 1978-09-18 | 1980-04-15 | Beaird-Poulan Division, Emerson Electric Co. | Safety braking apparatus for portable chain saw |
| JPH08336809A (en) * | 1995-04-11 | 1996-12-24 | Makita Corp | Brake device for chain saw |
| US5813123A (en) * | 1995-05-11 | 1998-09-29 | Andreas Stihl Ag & Co. | Motor chainsaw with a chain braking device |
| EP1468796A1 (en) * | 2003-04-16 | 2004-10-20 | Makita Corporation | Chain saw with a clutch braking mechanism |
| CN2631719Y (en) * | 2003-07-26 | 2004-08-11 | 浙江铁鎯电动工具有限公司 | Brake stopper of electric chain saw |
| CN2698539Y (en) * | 2004-05-17 | 2005-05-11 | 长春神箭电动工具有限责任公司 | Electric chain saw |
Also Published As
| Publication number | Publication date |
|---|---|
| DE602006004130D1 (en) | 2009-01-22 |
| EP1772237B1 (en) | 2008-12-10 |
| CN1944006A (en) | 2007-04-11 |
| JP2007098913A (en) | 2007-04-19 |
| JP4801961B2 (en) | 2011-10-26 |
| EP1772237A1 (en) | 2007-04-11 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 Termination date: 20130717 |