CN1689776A - Motor chain saw - Google Patents
Motor chain saw Download PDFInfo
- Publication number
- CN1689776A CN1689776A CN200510067041.3A CN200510067041A CN1689776A CN 1689776 A CN1689776 A CN 1689776A CN 200510067041 A CN200510067041 A CN 200510067041A CN 1689776 A CN1689776 A CN 1689776A
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- brake
- lever
- switch
- chain saw
- sliding component
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- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 239000011135 tin Substances 0.000 claims 1
- 229910052718 tin Inorganic materials 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 239000010974 bronze Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/08—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360 degrees
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/20—Self-tightening brakes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
- Braking Arrangements (AREA)
Abstract
A power-driven chainsaw is specified, comprising a chain brake device 20 consisting of a brake drum 21 and a brake band 22 looped around same, and two actuating devices for triggering the chain brake device 20, one of which is configured as a kickback brake 23 and the other as a coasting brake 24. To produce a chain braking system that is simple to manufacture and includes actuating devices for the chain brake device 20 independent of one another and acting with different braking forces, the kickback brake 23 engages the end of the brake band 22 with a brake lever 26 loaded by a strong kickback brake spring 29 and the coasting brake 24 engages the brake band 22 between the point of engagement of the brake lever 26 and the brake drum 21 with a tensioning dog 32 loaded by a weaker coasting brake spring 34 via a force transmission linkage 33.
Description
Technical field
The present invention relates to a kind of motor chain saw.
Background technology
In the known motor chain saw (DE 196 18 640 A1) that is provided with the link stop device, for quick stop saw chain, the non-return brake, be also referred to as recoil brake (Kickbackbremse) and have an adjustment (adjusting) lever that loads by strong non-return tripping spring, the non-return brake be converted to by its ready position its with the operating position of brake band tension on brake drum on the time this adjustment (adjusting) lever make the brake band lever be fixed on turning cylinder swing on the housing around it.On the brake band lever, fixing the end of the free brake band section of the brake band that twines brake drum.Adjustment (adjusting) lever is swung around the turning cylinder that is fixed on the housing by an arc hand guard member when the non-return brake is converted on its operating position.Inertia operation brake has one and is arranged on and is used to connect the operating parts of chain saw drive unit and the transmission part between the brake band lever, and has the weak inertia that loads brake band on application position and move tripping spring.The brake band lever has second turning cylinder parallel with first turning cylinder, the brake band lever can be around this second turning cylinder swing when inertia operation brake service, so that the operating parts that is used to start chain saw when starting the non-return brake keeps irrelevant with reaction force basically.The motor that drives chain saw and brake drum is connected and is turn-offed by operating parts, and this operating parts acts on the switch pin of a telegraph key, and the latter is loaded by an interior stage clip.If operating parts is released, then before inertia operation brake is operated, at first makes telegraph key and motor is turn-offed.In order when operating the non-return brake, to turn-off motor, in the current loop of motor, additionally be provided with a microswitch, its switch pin can be by an one-body molded flange operation on adjustment (adjusting) lever.In case the non-return brake starts by arc hand guard member, adjustment (adjusting) lever is swung with flange, force down switch pin thus and microswitch opened, even so that when operating parts keeps operation and telegraph key is closed thus the motor current loop also be disconnected.
Summary of the invention
According to the present invention, a kind of motor chain saw has been proposed, have: a housing; One be arranged in the housing, electronic saw chain drive unit preferably; A link stop device that is arranged in the housing, it has a brake drum and twines the brake band of brake drum, this brake band is used by an extended tape section in the brake drum and is fixed in the housing and can loading a pulling force by brake drum on extended another free strip section, so that brake band is converted to application position with the brake drum braking by slack position; Have two operating means that are used on the free strip section of brake band, producing pulling force, one of them is configured for the non-return brake that makes the chain saw fast braking and another is configured to inertia operation brake, and wherein: non-return brake and inertia operation brake act directly on the application point spaced apart from each other on the free strip section of brake band mutually dividually.
The advantage that motor chain saw of the present invention has is, directly be coupling on the brake band by non-return brake and inertia operation brake, irrelevant each other the reaching of non-return brake and inertia operation brake do not hindered each other, and the pulling force of inertia operation brake on the brake band of the link stop device device that produces available simple structure realizes that this descends the manufacturing cost of chain saw significantly on the other hand.
The favourable further configuration and the improvement of the motor chain saw that can obtain in such scheme, providing by measure described below.
Advantageously, inertia operation brake at the application point on the tape section between the application point of brake drum and non-return brake.
According to a favourable form of implementation of the present invention, inertia operation brake has a grasping piece and a force transfering device that is connected with grasping piece that grasps the free strip section, this force transfering device is moved the tripping spring loading and grasping piece is coupling in this wise the manual operation part that is used to connect the saw chain drive unit by inertia, promptly grasping piece makes the spring force of inertia operation tripping spring be delivered on the brake band as pulling force when the unclamp operation part.Therefore pulling force and inertia move the braking time relevant with pulling force of brake and can irrespectively be regulated by the appropriate designs of inertia operation tripping spring simply by the pulling force that the non-return brake is applied on the brake band.
According to a preferred form of implementation of the present invention, force transfering device is configured to bar, and it has a switch lever of fixedlying connected with operating parts and one and is hinged on transmission bar on the grasping piece that is configured to grasp finger.Electric switch in current loop that is arranged on the power saws chain drive mechanism is presented in the oscillating stroke of switch lever in this wise with a switch operator, promptly makes switch closure and make the switch disconnection when operating operation spare when the unclamp operation part.A sliding component hingedly is connected with a brake lever that acts on the brake band of non-return brake, this sliding component movably remains on the switch lever and constitutes in this wise, and promptly the shift motion that this sliding component is arranged in switch operator when the non-return brake does not work reaches when the non-return brake works this sliding component and pulled out by the shift motion from switch operator.For closed electric switch, when the manual operating parts of operation, switch operator is moved by sliding component.By this structural configuration, inertia operation brake and non-return brake are worked under their situations to same electric switch response, thus-be different from the single electric switch of known motor chain saw-only need in the current loop of saw chain drive unit, be provided with.This also helps the decline of manufacturing cost.
Advantageously, inertia operation tripping spring acts on the switch lever in this wise, i.e. the swing of this spring switch lever that can cause by the operation by operating parts is clamped and behind the unclamp operation part switch lever is resetted.
Advantageously, sliding component on switch lever movably clamping connect by a pin-groove and realize.
Advantageously, sliding component has an elongated hole and grasps and refers to have a guide finger with its swinging axle concentric, and this guide finger extend in the elongated hole.
Advantageously, brake lever is connected with the hand guard member by a pin; And being articulated and connected of brake lever and sliding component forms by centering on elongated hole pin, in the sliding component.
Advantageously, an action of reset spring on sliding component, this spring make elongated hole on the elongated hole edge of the front portion on the brake lever swaying direction rests on pin on the brake lever with constituting the power transmission chain.
According to a favourable form of implementation of the present invention, brake band is formed from steel and brake drum is made by copper alloy in the shell zone that is braked the band encirclement at least.Here brake drum can integrally be made up of copper alloy or also can only be to have a ring of being made by copper alloy, and this ring is sealed by shape then, hot pressing shrink-fit or by welding, bonding etc. being fixed on the brake drum.Also can be, infiltrate copper in the exterior domain at brake drum during the brake drum sintering, in the contact area of brake band, have high copper component thus.Material by brake drum and brake band be chosen in that the wearing and tearing of link stop device keep very little behind inertia operation brake a large amount of braking period of the number.
According to a favourable form of implementation of the present invention, brake band is provided with one and the contacted phosphate coating of brake drum (Phosphatschicht).This phosphate coating plays the effect that makes brake band and the break-in of brake drum protectiveness and greatly shortens the break-in characteristic of link stop device, and promptly the mutual rubbing surface of brake drum and brake band is level and smooth.
Description of drawings
To describe the present invention in detail by the embodiment shown in the accompanying drawing in the following description.Accompanying drawing represents,
Fig. 1: partly show in mode of operation, have the longitudinal section of the motor chain saw of link stop device, non-return brake (R ü ckschlagbremse) and inertia operation brake (Auslaufbremse),
Fig. 2: the view identical in non-return brake starting state with Fig. 1,
Fig. 3: turn-off and the view identical in the state that comes into force of inertia operation brake thus with Fig. 1 at motor chain saw.
The specific embodiment
In Fig. 1 only with within the scope of the invention the electro-motor chain saw shown in the interested link stop system have a housing 10, mold integratedly in the rear end of this housing one first-hand 11, and be configured with support teeth 12 at its front end face, be used for chain saw is placed on workpiece for sawing.Side is provided with a second-hand 13 thereon near housing 10 front ends, and this second-hand extends the longitudinal axis perpendicular to housing 10 arcly, promptly extends perpendicular to the drawing plane earth in Fig. 1.In housing 10, be provided with an electronic saw chain drive unit 15, a driving pinion 16 in this drive unit only is shown among the figure for simplicity's sake, and this pinion does not have on the output shaft 17 that places a motor with relatively rotating and passes through sprocket wheel that meshes with saw chain formation of an actuator drives.Saw chain is leading on a support member of stretching out from housing in known manner.In order to connect and turn-off saw chain drive unit 15, be provided with one be connected in the motor current loop, have an electric switch 18 that is configured to the switch operator of switch pin 181, this switch pin can carry out switch by a manual operation part 19.Microswitch of preferred use is as electric switch 18.
The link stop system comprises the operating means of a link stop device 20 and two operational chain brake apparatus 20, and one of them is configured to non-return brake 23, and it plays the effect that makes the chain saw fast braking in less than 0.15 second; Reach another and be configured to inertia operation brake 24, it is causing when manual operating parts 19 turn-offs saw chain drive unit 15 that by operating saw chain is in 1 second braking time inside brake at the most.
On switch lever 35, connect 39 and keeping a sliding component 40 movably by a pin-groove.This sliding component 40 can grasp on the guide finger 41 that is provided with coaxially with its axis of oscillation that refers on 32 at one and be led by elongated hole 42 with moving axially, and guide finger 11 stretches in this elongated hole.Deviate from sliding component on the end of switch lever 35, sliding component 40 is connected with brake bar 26, wherein also forms by an elongated hole 46 that is formed in the sliding component 40 to be articulated and connected, and the pin 27 on the lever arm 261 of brake lever 26 passes this elongated hole and stretches out.A back-moving spring 43 that is configured to extension spring acts on the sliding component 40, this spring makes sliding component 40 keep cooperating with brake bar 26 all the time, and its mode is always to constitute the contact of power transmission chain ground at the elongated hole edge of the front portion of elongated hole 46 on the swaying direction of brake lever 26 on the pin on the brake lever 26 27.Sliding component 40 quilts are moulding and orientation in this wise, to be sliding component remain on the sliding component end of sliding on the switch lever 35 movably with it extend in the shift motion of switch pin 181 of electric switch 18 (Fig. 3), and be like this, promptly when manual operation part 19 operation and when causing the swing of switch lever 35 thus, sliding component makes switch pin 181 move the closure that (Fig. 1) and the latter cause electric switch 18.If sliding component 40 moves relative to switch lever 35 on this position, as shown in Figure 2, then sliding component 40 discharges switch pin 181, and switch pin resets under the stage clip effect of switch inside and electric switch is cut-off.
Below will come the working method of description chain brakes tout court by the view among Fig. 1 to 3.
Shown in Fig. 1 is that motor chain saw is in the operating position.By the operation of manual operation part 19, switch lever 35 makes inertia operation tripping spring 34 compress around its swinging axle swing thus.Sliding component 40 makes the switch pin 181 of electric switch 18 move to closing direction, and electric switch 18 is closed and the motor that is used to drive saw chain is energized.Saw chain will drive and not have with pinion 16 and cooperate the brake drum 21 on the power transmission shaft 17 also to rotate with relatively rotating by driving pinion 16, and wherein this brake drum 21 can loosely lean against rotation under the situation above it at brake band 22 with not being subjected to braking.
Shown in Fig. 2 is motor chain saw in a duty, and wherein operating personnel make manual operation part 19 keep pushing and non-return brake 23 is activated.Non-return brake 23 is started in this wise, and promptly hand guard member 14 will be because a rebound campaign that makes progress of housing 10 will be bumped being held in the operator of second-hand on 13 reaches on hand thus and swing on the direction of arrow in Fig. 1 45.Swing by this hand guard member 14 deasil swings brake lever 26 via pin 27.Make by toggle link 28 releases of overvoltage by this oscillating motion.Pressed brake lever 26 to move forward by the non-return tripping spring 29 of prestrain.Brake lever 26 is drawing brake band 22 and is reaching forward brake band is pressed on the brake drum 21, so that tightly wrap function certainly by what be applied to high-tensile strength on the brake band 22 and brake band 22 by strong non-return (Rueckschlag) tripping spring 29, on brake drum 21, produced high brake force and it is suddenly braked.Swing by brake lever 26 makes sliding component 40 move relative to switch lever 35, makes the sliding component end detach switch pin 181 thus, as shown in Figure 2.Therefore switch pin 181 is released, and electric switch is disconnected.In the case, the coupling of sliding component 40 on brake lever 26 is performed such, and promptly constantly makes electric switch 18 disconnections before the pulling force that is caused by non-return tripping spring 29 is applied to tight on the brake band 22.
Fig. 3 represents the motor chain saw in the position out of service, and non-return brake 23 does not respond.By discharged manual operation part 19 by the operator, switch lever 35 is resetted by inertia operation tripping spring 34.The switch pin 181 of electric switch 18 is released thus and resets under the effect of inner stage clip, so that electric switch 18 is disconnected and makes the current loop of motor to interrupt.Backswing by switch lever 35 will via transmit bar 36 make grasp refer to 32 in Fig. 1 counter-clockwise swing.The grasping finger 32 that is engaged in the groove 44 is delivered to the spring force that inertia moves tripping spring 34 on the brake band 22, so that pulling force of effect on this brake band, this pulling force also makes brake band 22 draw forward and strains on brake drum 21, and the shutoff along with motor makes its braking thus.Because the spring force of inertia operation tripping spring 34 is significantly smaller than the spring force of non-return tripping spring 29, it is longer than stopping needed braking time by 23 responses of non-return brake until saw chain to stop and making thus the braking time that saw chain stops until brake drum 21.
In order to reach when hand sawing-machine turn-offs, after a large amount of braking periods the wearing and tearing of link stop device 20 as much as possible little, brake band 22 is formed from steel and brake drum 21 is made by an Albatra metal-.Here preferably by ormolu, signal bronze and albronze constitute.Brake drum 21 can fully be made by copper alloy or only be to have the outer shroud of being done by copper alloy.Important only is, is made up of copper alloy with the contact-making surface of brake band 22.For protectiveness ground break-in, promptly smooth with the contact-making surface of brake band 22 in order to reach brake drum 21 in the running-in time that shortens, brake band 22 is provided with one and brake drum 21 contacted phosphate coating.
Claims (15)
1. motor chain saw has: a housing (10); One be arranged in the housing (10), electronic saw chain drive unit (15) preferably; A link stop device (20) that is arranged in the housing (10), it has a brake drum (21) and twines the brake band (22) of brake drum (21), this brake band is used by an extended tape section (221) in the brake drum (21) and is fixed in the housing (10) and can loading a pulling force by brake drum (21) extended another free strip section (222) on, so that brake band is converted to the application position that brake drum (21) is braked by slack position; Having two is used for going up the operating means that produces pulling force at the free strip section (222) of brake band (22), one of them is configured for the non-return brake (23) that makes the chain saw fast braking and another is configured to inertia operation brake (24), it is characterized in that: non-return brake (23) and inertia operation brake (24) act directly on the application point spaced apart from each other on the free strip section (222) of brake band (22) mutually dividually.
2. according to the motor chain saw of claim 1, it is characterized in that: inertia operation brake (24) is positioned between the application point of brake drum (21) and non-return brake (23) at the application point on the tape section (222).
3. according to the motor chain saw of claim 1 or 2, it is characterized in that: inertia operation brake (24) has a grasping piece and a force transfering device that is connected with grasping piece that grasps free strip section (222), this force transfering device moves the manual operation part (19) that tripping spring (34) loads and make grasping piece (32) to be coupling in this wise to be used to connect saw chain drive unit (15) by inertia, and promptly grasping piece (32) is delivered on the brake band (22) spring force of inertia operation tripping spring (34) as pulling force when unclamp operation part (19).
4. according to the motor chain saw of claim 3, it is characterized in that: what grasping piece was configured to a supporting swingably grasps finger (32), and it passes the groove (44) in the free strip section (222) that is arranged on brake band (22).
5. according to the motor chain saw of claim 4, it is characterized in that: force transfering device is configured to power and transmits bar (33), this power transmit bar have one that fixedly connected with operating parts (19), can be hinged on the transmission bar (36) that grasps on the finger (32) with the switch lever (35) of the fixing swinging axle swing of housing and one around one, wherein this hingedly preferably penetrates guide finger (37) in this elongated hole (38), that be configured on the transmission bar (36) by the elongated hole (38) in the switch lever (35) and one and realizes.
6. according to the motor chain saw of claim 5, it is characterized in that: the electric switch (18) in current loop that is arranged on power saws chain drive mechanism (15) extend in the oscillating stroke of switch lever (35) in this wise with a switch operator, promptly makes this electric switch (18) closed and make switch (18) disconnection by switch operator when unclamp operation part (19) by switch operator when operating operation spare (19).
7. according to the motor chain saw of claim 6, it is characterized in that: inertia operation tripping spring (34) acts on the switch lever (35) in this wise, and promptly clamped the reaching of swing of this spring switch lever (35) that can cause by the operation by operating parts (19) makes switch lever (35) reset behind unclamp operation part (19).
8. according to the motor chain saw of claim 6 or 7, it is characterized in that: non-return brake (23) has: one act on the free strip section (222), can be by the brake lever (26) of a hand guard member (14) swing, this brake lever is loaded by non-return tripping spring (29); And sliding component (40) that hingedly is connected with brake lever (26), this sliding component remains on switch lever (35) movably and goes up and be so constructed, promptly when non-return brake (23) shift motion that this sliding component is arranged in switch operator when not working reach when non-return brake (23) when working this sliding component pulled out by shift motion from switch operator; And by sliding component (40) switch operator is moved at the manual operating parts of operation when (19) for closed electric switch (18).
9. motor chain saw according to Claim 8 is characterized in that: sliding component (40) on switch lever (35) movably clamping connect (39) by a pin-groove and realize.
10. according to Claim 8 or 9 motor chain saw, it is characterized in that: sliding component (40) has an elongated hole (42) and grasps finger (32) and has a guide finger (41) with its swinging axle concentric, and this guide finger extend in the elongated hole (42).
11. to one of 10 motor chain saw, it is characterized in that: brake lever (26) is connected with hand guard member (14) by a pin (27) according to Claim 8; And being articulated and connected of brake lever (26) and sliding component (40) by forming around elongated hole (46) pin (27), in the sliding component (40).
12. motor chain saw according to claim 11, it is characterized in that: a back-moving spring (43) acts on the sliding component (40), this spring make elongated hole (46) on the elongated hole edge of the front portion on brake lever (26) swaying direction rests on pin (27) on the brake lever (26) with constituting the power transmission chain.
13. the motor chain saw according to one of claim 1 to 12 is characterized in that: brake band (22) be formed from steel and at least the shell zone that band (21) surrounds that is braked of brake drum (21) make by copper alloy.
14. the motor chain saw according to claim 13 is characterized in that: copper alloy comprises zinc, tin or aluminium.
15. the motor chain saw according to claim 13 or 14 is characterized in that: brake band (22) is provided with one and the contacted phosphate coating of brake drum (21).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004020421.7 | 2004-04-27 | ||
| DE102004020421.7A DE102004020421B4 (en) | 2004-04-27 | 2004-04-27 | Motor chain saw with non-return brake and coast brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1689776A true CN1689776A (en) | 2005-11-02 |
| CN100577376C CN100577376C (en) | 2010-01-06 |
Family
ID=34638872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510067041A Expired - Fee Related CN100577376C (en) | 2004-04-27 | 2005-04-27 | Motor chain saw |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN100577376C (en) |
| DE (1) | DE102004020421B4 (en) |
| GB (1) | GB2413525B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528430B (en) * | 2006-10-19 | 2011-05-11 | 富世华智诺株式会社 | Brake system of chain saw and chain saw |
| CN102672273A (en) * | 2012-05-25 | 2012-09-19 | 浙江亚特电器有限公司 | Chain saw with protection plate positioning mechanism |
| CN101570027B (en) * | 2008-04-30 | 2013-01-30 | 苏州宝时得电动工具有限公司 | Electric tool brake apparatus |
| CN101758518B (en) * | 2008-12-23 | 2013-01-30 | 苏州宝时得电动工具有限公司 | Brake device of electric tool |
| CN103419251A (en) * | 2013-08-09 | 2013-12-04 | 宁波好使特电器有限公司 | Chain saw |
| CN105127511A (en) * | 2015-09-08 | 2015-12-09 | 嘉兴百佳机械有限公司 | Supporting mechanism for braking connecting rod in electric chain saw braking device |
| 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 |
| CN111148595A (en) * | 2017-09-25 | 2020-05-12 | 罗伯特·博世有限公司 | Chain saw system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009070060A1 (en) | 2007-11-26 | 2009-06-04 | Husqvarna Ab | Chainsaw brake arrangement |
| EP2465654B1 (en) * | 2010-12-17 | 2017-07-26 | Robert Bosch GmbH | Chainsaw |
| RU2015143991A (en) * | 2013-03-14 | 2017-04-20 | Хускварна Аб | FREE-DRIVE / CHAIN BRAKE MECHANISM |
| WO2015133940A1 (en) * | 2014-03-04 | 2015-09-11 | Husqvarna Ab | Coast brake control system |
| CN115699556A (en) | 2020-06-11 | 2023-02-03 | 米沃奇电动工具公司 | Voltage-based braking method for power tool |
| EP4390172A1 (en) * | 2022-12-20 | 2024-06-26 | Andreas Stihl AG & Co. KG | Hand-held work device with a braking device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4121339A (en) * | 1977-08-10 | 1978-10-24 | Milovan Nikolich | Safety brake mechanism for chain saws |
| US4197640A (en) * | 1978-09-18 | 1980-04-15 | Beaird-Poulan Division, Emerson Electric Co. | Safety braking apparatus for portable chain saw |
| DE3430840A1 (en) * | 1984-08-22 | 1986-03-06 | Fa. Andreas Stihl, 7050 Waiblingen | MOTOR CHAIN SAW |
| DE4330850A1 (en) * | 1993-09-11 | 1995-03-16 | Stihl Maschf Andreas | Mechanical two-circuit braking system |
| FR2733932B1 (en) * | 1995-05-11 | 1999-01-22 | Stihl Maschf Andreas | ENGINE CHAIN CHAINSAW EQUIPPED WITH A CHAIN BRAKING DEVICE |
| DE19931251A1 (en) * | 1999-07-07 | 2001-01-11 | Bosch Gmbh Robert | Chainsaw |
-
2004
- 2004-04-27 DE DE102004020421.7A patent/DE102004020421B4/en not_active Expired - Fee Related
-
2005
- 2005-04-25 GB GB0508333A patent/GB2413525B/en not_active Expired - Fee Related
- 2005-04-27 CN CN200510067041A patent/CN100577376C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528430B (en) * | 2006-10-19 | 2011-05-11 | 富世华智诺株式会社 | Brake system of chain saw and chain saw |
| CN101570027B (en) * | 2008-04-30 | 2013-01-30 | 苏州宝时得电动工具有限公司 | Electric tool brake apparatus |
| CN101758518B (en) * | 2008-12-23 | 2013-01-30 | 苏州宝时得电动工具有限公司 | Brake device of electric tool |
| CN102672273A (en) * | 2012-05-25 | 2012-09-19 | 浙江亚特电器有限公司 | Chain saw with protection plate positioning mechanism |
| CN103419251A (en) * | 2013-08-09 | 2013-12-04 | 宁波好使特电器有限公司 | Chain saw |
| CN105127511A (en) * | 2015-09-08 | 2015-12-09 | 嘉兴百佳机械有限公司 | Supporting mechanism for braking connecting rod in electric chain saw braking device |
| 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 |
| CN111148595A (en) * | 2017-09-25 | 2020-05-12 | 罗伯特·博世有限公司 | Chain saw system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2413525A (en) | 2005-11-02 |
| GB2413525B (en) | 2006-04-19 |
| CN100577376C (en) | 2010-01-06 |
| DE102004020421B4 (en) | 2016-01-28 |
| GB0508333D0 (en) | 2005-06-01 |
| DE102004020421A1 (en) | 2005-11-24 |
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