CN101570027A - Electric tool brake apparatus - Google Patents
Electric tool brake apparatus Download PDFInfo
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- CN101570027A CN101570027A CN 200810096801 CN200810096801A CN101570027A CN 101570027 A CN101570027 A CN 101570027A CN 200810096801 CN200810096801 CN 200810096801 CN 200810096801 A CN200810096801 A CN 200810096801A CN 101570027 A CN101570027 A CN 101570027A
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- brake
- electric tool
- bar
- recoil
- transfer element
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Abstract
The invention discloses an electric tool brake apparatus comprising a work piece and a brake apparatus used for fast stopping the movement of the work piece, wherein the brake apparatus comprises a brake drum, a brake ribbon winded at the periphery of the brake drum and a brake lever; and the brake lever acts on the brake ribbon to enable the brake ribbon to be switched between a first position where the work piece works in the normal work status and a second position where the work piece works after being braked. The electric tool brake apparatus further comprises a backflush brake and an inertia brake which are used for controlling the brake lever at different positions, wherein the backflush brake comprises a control lever which can enable the brake lever to rotate around a first rotation axis; the inertia brake controls the brake lever to rotate around a second rotation axis, and the first rotation axis and the second rotation axis are arranged coaxially. By adopting the structure, the invention has strong stability, lower cost and good brake effect.
Description
Technical field
The present invention relates to a kind of brake device of electric tool, especially a kind of brake apparatus of chain saw.
Background technology
Announce at United States Patent (USP) and to disclose a kind of chain saw No. 5813123 and in order to stop the saw chain brake apparatus of saw chain fast, the saw chain brake apparatus of chain saw generally all is provided with a chain saw recoil brake (Kickbackbreak), the recoil brake has an adjustment (adjusting) lever that is loaded by strong recoil tripping spring, and this adjustment (adjusting) lever makes brake bar that brake band connects be fixed on first turning cylinder swing on the housing around it when the recoil brake is converted to it brake band is stretched in operating position on the brake drum by its ready position.Wherein fixing the end of the free brake band section of the brake band that twines brake drum on the brake bar, and adjustment (adjusting) lever is swung around the turning cylinder that is fixed on the housing by an arc hand guard member when the recoil brake is converted on its operating position.In the link stop device that US5813123A1 discloses, also comprise an inertia brake, inertia 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 bar, and has the weak inertia operation tripping spring that loads brake band on application position.Brake bar has second turning cylinder parallel with first turning cylinder, and when inertia brake was operated, brake bar can be around the swing of described second turning cylinder, so that is used to when starting the recoil brake to start that the operating parts of chain saw is basic keeps haveing nothing to do with reaction force.The motor that drives chain saw and brake drum is connected and disconnection 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, telegraph key and motor section are opened.In order to disconnect motor when the operation recoil brake, additionally in the current loop of motor be provided with a microswitch, its switch pin can be operated by the flange on the integrated adjustment (adjusting) lever.In case the recoil brake starts by arc hand guard member, adjustment (adjusting) lever is swung with flange, forces down switch pin thus and makes microswitch open, make operating parts keep operation also thus during the telegraph key closure current of electric also be disconnected.This structure more complicated, articulated elements is many, need to use a switch and a microswitch, and complex structure, cost are higher.
Summary of the invention
At the deficiencies in the prior art the invention provides a kind of simple in structure, stability is strong, cost is lower and can effectively realize the brake device of electric tool, particularly chain saw brake apparatus of braking function.For solving the problems of the technologies described above, a kind of technical scheme of the present invention is: a kind of brake device of electric tool, comprise a drive unit that is arranged at housing, start the trigger switch of drive unit, the operating parts of control trigger switch, and work package and one be used for quitting work the fast brake apparatus of part motion, described brake apparatus comprises brake drum, be wrapped in the brake band of described brake drum periphery, an and brake bar, described brake bar acts on the described brake band, make described brake band to change between the second place by primary importance under the work package normal operating conditions and the work of braking work package, it is characterized in that: described brake device of electric tool further comprises recoil brake and the inertia brake that is used at diverse location control brake bar, described recoil brake comprises can make the control lever of described brake bar around the rotation of first turning cylinder, described inertia brake is controlled described brake bar and is rotated around second turning cylinder, and described first, the coaxial setting of second turning cylinder.Another kind of technical scheme of the present invention is: a kind of brake device of electric tool, comprise a drive unit that is arranged at housing, start the trigger switch of drive unit, the operating parts of control trigger switch, and work package and one be used for quitting work the fast brake apparatus of part motion, described brake apparatus comprises brake drum, be wrapped in the brake band of described brake drum periphery, an and brake bar, described brake bar acts on the described brake band, make described brake band to change between the second place by primary importance under the work package normal operating conditions and the work of braking work package, it is characterized in that: described brake device of electric tool further comprises recoil brake and the inertia brake that is used at diverse location control brake bar, described recoil brake comprises the control lever of controlling described brake bar, described control lever links to each other with described trigger switch is selectable by a control transmitting device, when the electric tool operate as normal, control transmitting device and trigger switch engagement, when the recoil brake started, control transmitting device and trigger switch were thrown off.
Wherein, above-mentioned brake device of electric tool can be that the chain saw brake apparatus also can be other brake device of electric tool, for example shrub and hedge trimmer and cutting machine, but the saw chain that described work package chain saw drives, also other work packages, for example tool section on the shrub and hedge trimmer and the blade on the cutting machine.
Can obtain in such scheme, providing the further configuration and the improvement of brake device of electric tool by measure described below.
The fixedly section that described brake band has a fixedly connected housing with extend and be connected the free section of brake bar by brake drum, and have a grasping piece that grasps the free section of brake band on the brake bar.
Described braking transmitting device comprises first transfer element, switch block and extension spring; Described control transmitting device comprises second transfer element, stage clip and safety office.
Inertia brake comprises a braking transmitting device, and described braking transmission connects described operating parts and described brake bar, and can operate described control lever and rotate around described second turning cylinder.
The recoil brake comprises a control transmitting device, and described control transmitting device connects described control lever and trigger switch, and selectable and trigger switch engagement.
Described inertia brake has first transfer element that an end that connects brake bar is provided with guide finger, the guide finger of first transfer element connects an extension spring, and load by this extension spring, when unclamping described operating parts, described extension spring is transferred to spring pressure on the brake bar by first transfer element, make brake bar be positioned at application position, brake band is transformed into the position with the brake drum braking.
Described guide finger is arranged in the elongated hole on the switch block of a pivotally connected housing, and guide finger can move in described elongated hole, thereby control described first transfer element, described switch block also comprises a projection, with the button spring that acts on the projection, but described projection attended operation part makes operating parts can stir switch block and is arranged on pivot swinging on the housing around switch block.
When operating parts during at operating position, operating parts is stirred projection drive switch block and is rotated on pivot, and switch block drives first transfer element, and first transfer element drives brake bar and swings to the operating parts direction around turning cylinder, thereby make brake band loosen the brake drum, the chain saw operate as normal, otherwise, when operating parts send out, extension spring loads first transfer element, drive brake bar and swing to the carrier bar direction around turning cylinder, brake bar drives brake band tensioning brake drum, realizes braking.
Described recoil brake have a control lever, described control lever is loaded by a recoil tripping spring, and described recoil tripping spring connects a toggle link that has comprised sliding component, male part, described male part connects an end of control lever, an other end of control lever connects one second transfer element, second transfer element connects a safety office, the machine-operated selectable engagement operations part of described safety, when the electric tool operate as normal, the machine-operated engagement operations part of described safety, when the recoil brake started, described safe office and described operating parts were thrown off.
Described control lever is provided with a connector, selectable and the described brake bar engagement of described connector, when the chain saw operate as normal, described connector and described brake bar are thrown off, when described recoil brake starts, described connector and brake bar engagement, described control lever is swung to braking direction at turning cylinder by the described brake bar of described connector effect.
When described recoil brake started, hand guard member drove control lever, control lever drives brake bar by connector and swings to braking direction around turning cylinder, and brake bar drives the free section of brake band, and made brake band tensioning brake drum, realized braking.Control lever moves to the carrier bar direction by second transfer element drive safety office simultaneously, and throws off with operating parts, avoids the drive unit overload.
After adopting such technical scheme, the brake device of electric tool stability that has braking function is strong, and cost is lower, and the recoil brake is the same with the inertia brake braking effect, and security performance is good.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a chain saw stopped status master apparent direction internal structure schematic diagram of the present invention.
Fig. 2 is the partial cutaway diagrammatic sketch of the relative Fig. 1 of chain saw normal operating conditions of the present invention.
Fig. 3 is the partial cutaway diagrammatic sketch of relative Fig. 1 under the chain saw recoil brake starting state of the present invention.
Wherein: 1, chain saw; 2, housing; 3, the first in command;
5, carrier bar; 7, the second in command; 9, hand guard member;
11, drive unit; 13, output shaft; 15, trigger switch;
151, switch pin; 17, operating parts; 18, back-moving spring;
19, brake apparatus; 21, recoil brake; 23, inertia brake;
25, brake drum; 27, brake band; 271, fixing section;
272, free section; 29, turning cylinder; 31, brake bar;
32, grasping piece; 33, control lever; 35, toggle link;
351, sliding component; 352, male part; 37, recoil tripping spring;
38, connector; 39, first transfer element; 40, gathering sill;
41, switch block; 42, projection; 43, elongated hole;
44, guide finger; 45, extension spring; 46, button spring;
49, second transfer element; 51, buckle; 53, safety office;
55, stage clip
The specific embodiment
The present invention has come out with the brake apparatus of a kind of brake device of electric tool, particularly a kind of chain saw, and existing the present invention will be described with the specific embodiment.
With reference to shown in Figure 1, in best mode for carrying out the invention, chain saw 1 has the housing 2 of a longitudinal extension, be provided with a first in command 3 in the rear end of this housing, can adorn one of lining be used for the leading carrier bar 5 of saw chain (figure does not look out) at the front end of this housing 2, also be provided with a second in command 7 near the front end of housing 2, the described second in command 7 is positioned at the top of housing 2, and, promptly in Fig. 1 to Fig. 3, extend perpendicular to the figure paper plane perpendicular to the longitudinal extension direction of housing.In housing 2, be provided with the drive unit 11 of a chain saw, described drive unit comprise chain saw motor, chain saw motor output shaft 13 and do not have transmission device in relative rotation with this output shaft, and be used for driving the sprocket (figure does not look out) of saw chain motion by this actuator drives.In order to connect and turn-off chain saw drive unit 11, also be provided with one and be connected in the current of electric loop, have the trigger switch 15 of a switch pin 151, this trigger switch 15 can be controlled by an operating parts 17, operating parts 17 is by back-moving spring 18 bias voltages, and under chain saw 1 normal operating conditions, operating parts 17 is opened, be push spare 17 bias voltage stage clips 18, the current of electric loop is connected, otherwise, unclamp operation part 17, stage clip 18 is replied, and interrupt in the current of electric loop.
This chain saw 1 also comprises a chain saw brakes that is used to stop the saw chain motion, this chain saw brakes comprises the operating means of a brake apparatus 19 and two operate brake 19, one of them brake 21 that is configured to recoil, it plays and makes the quick stopping effect of saw chain at short notice, is used to prevent the recoil active force of chain saw 1; And another is configured to inertia brake 23, and it brakes saw chain by operating parts 17, and turn-offs chain saw drive unit 11 simultaneously.
Described toggle link 35 comprises a sliding component 351 and a male part 352 (referring to Fig. 2), and this sliding component 351 can move along recoil tripping spring 37 pressure directions under the preload force effect of recoil tripping spring 37; These male part 352 1 sides are hinged on the sliding component 351; opposite side is hinged on second end of control lever 33; by this recoil tripping spring 37 and the toggle link 35 that is connected with described recoil tripping spring 37; the guard member 9 of going smoothly is in treats trigger position; and when triggering hand guard member 9, hand guard member 9 can be transformed into application position very fast.
The 3rd end of control lever 33 is connected with a wherein end of second transfer element 49; this second transfer element 49 can be a connecting rod; and be arranged in the buckle 51 on the housing 2; and this second transfer element 49 can move in buckle 51; described second transfer element, 49 other ends connect a safety office 53; being provided with one in this safety office 53 is used to prevent when the recoil brake starts; the user recovers hand guard member 9 positions by force under the situation that does not have unclamp operation part 17; make the guard member 9 of going smoothly drive the stage clip 55 that safety office 53 is returned to the chain saw enable position by the control lever 33 and second transfer element 49; this second transfer element connects described safety machine-operated 53 by connecting described stage clip 55; these safety office 53 separable attended operation parts 17; when chain saw 1 operate as normal; safety office 53 connects described operating parts 17; when recoil brake 21 started, this safety office 53 threw off with operating parts 17.
Near being provided with a connection piece 38 near control lever 33 the 3rd end, this connector 38 is plastic in one with control lever 33, this connector 38 can be a cylinder that protrudes from control lever 33, and extend along longitudinal axis perpendicular to control lever 33, promptly in Fig. 1 to Fig. 3, extend the selectable engagement brake bar 31 of this connector perpendicular to the figure paper plane.
Can be provided with the notch that the part 38 that is connected connects on the brake bar 31, make when control lever 33 engagement brake bars 31, connect more stable.
One end of described first transfer element 39 be connected in notch that the part 38 of being connected on the brake bar 31 connects near, this first transfer element 39 is arranged in the gathering sill 40 by housing 2 moulding, and can in gathering sill 40, move, the other end of this first transfer element 39 is provided with the guide finger 44 of a connection switch block 41, this guide finger 44 also is connected in the extension spring 45 that is arranged on the housing 2, the transfer element 39 of winning is loaded by described extension spring 45, when operating parts 17 is pressed, this extension spring 45 effects first transfer element 39 moves to operating parts 17 directions, thereby brake band 27 is lax, and this extension spring 45 can also be arranged on the free section 272 of brake band 27.
Described switch block 41 pivotally connected chain saw housings 2, and be provided with a button spring 46 that is used to load switch block 41 at pivot 42 places, these button spring 46 bias voltage switch blocks 41, make switch block 41 when not being subjected to other external force, keep deflection carrier bar 5 directions, also be provided with on this switch block 41 in the elongated hole 43, guide finger 44 is arranged in this elongated hole 43, and described guide finger 44 can slippage in described elongated hole 43.In best mode for carrying out the invention, this switch block 41 also is provided with a projection 46, and this projection 46 can connect described operating parts 17, is used for stirring this switch block 41 around pivot 42 swings when operating parts 17 starts; When unclamp operation part 17, load the elastic force of switch block 41 by button spring 46, make switch block 41 be partial to carrier bars 5 directions, the slippage in the elongated hole 43 of described switch block 41 of this guide finger 44, and final inwall against elongated hole 43, and guide finger 44 is transferred to the biasing force of spring on the brake bar 31 by first transfer element 39, makes brake bar 31 remain on the application position of brake band 27 tensioning brake drums 25.
When chain saw 1 was in normal operating conditions, referring to Fig. 2, described operating parts 17 was pressed, and operating parts 17 is against described safety office 53, and by the machine-operated 53 depress switch pins 151 of safety, made trigger switch 15 start, and chain saw current of electric loop is connected; Simultaneously, operating parts 17 is stirred the projection 46 on the switch block 41, switch block 41 is swung to operating parts 17 directions round pivot 42, described extension spring 45 loads first transfer element 39, the transfer element 39 of winning is moved to operating parts 17 directions in gathering sill 40, described first transfer element 39 drives described brake bar 31 and swings to operating parts 17 directions round turning cylinder 29, make the free section 272 of the brake band that is connected in grasping piece 32 on the brake bar 31 near brake drum 25, the brake band 27 of brake drum 25 peripheries is lax, and brake drum 25 does not have output shaft 13 normal rotation of chain saw drive unit 11 in relative rotation, thereby chain saw 1 operate as normal.
When starting this recoil brake 21, referring to Fig. 3, when the user recoils in the chain saw normal operating conditions, the arm that the user is grasped in the second in command promotes described hand guard member 9 and overturns to carrier bar 5 directions, thereby hand guard member 9 drives control lever 33 by turning cylinder 29 and swings to same direction, the connector 38 engagement brake bars 31 of control lever 33 by being provided with on it, and drive brake bar 31 5 directions swing round turning cylinder 29 towards carrier bar, brake bar 31 moves towards carrier bar 5 directions by the free section 272 of grasping piece 32 drive brake bands of the free section 272 of connection brake band of setting on it, make brake band 27 tensioning brake drums 25, brake drum 25 is braked, and braking and brake drum 25 do not have the output shaft 13 of the chain saw drive unit 11 that relatively rotates setting, stopping output shaft 13 rotates, make drive unit and sprocket stop operating, thereby stop the saw chain motion; Drive unit is in braking procedure, control lever 33 drives second transfer element 49 that connects in its 3rd end and moves to carrier bar 5 directions in draw-in groove 51, the safety office 53 that makes second transfer element 49 drive its connections moves to carrier bar 5 directions, make safety office 53 and operating parts 17 throw off, avoid when 13 brakings of chain saw output shaft, the chain saw current loop also is in excited state, causes electric current increase in the chain saw loop, destroys motor.
When operating parts 17 unclamps, recoil brake 19 does not start, when inertia brake 23 starts, referring to Fig. 1, the switch pin 151 of described trigger switch 15 is in off-state, chain saw does not have electric current to flow through in the 1 current of electric loop, described operating parts 17 is thrown off with the projection 46 on the described switch block 41, under the elastic force effect of described button spring 46, described switch block 41 is swung to carrier bar 5 directions round pivot 42, the slippage in the elongated hole 43 of described switch block 41 of described guide finger 44, and final inwall against elongated hole 43, thereby the active force that transmits button spring 46 is on first transfer element 39, and by first transfer element 39 with the active force of described button spring 42 to brake bar 31, make brake bar 31 swing to carrier bar 5 directions round turning cylinder 29, and brake bar 31 drives the free section 272 of brake band by grasping piece disposed thereon 32 and moves to carrier bar 5 directions, make brake band 27 tensioning brake drums 25, brake drum 25 is braked, thereby braking does not have the output shaft 13 that is arranged at chain saw drive unit 11 in relative rotation with brake drum 25, stopping output shaft 13 rotates, make drive unit and sprocket stop operating, thereby stop the saw chain motion.
The electric tool of listing in best mode for carrying out the invention is a chain saw, and simultaneously, brake device of electric tool of the present invention also is applicable to other electric tools, garden pruning tool for example, stone material cutting tool etc.
Claims (13)
1. brake device of electric tool, comprise a drive unit (11) that is arranged at housing (2), start the trigger switch (15) of drive unit (11), the operating parts (17) of control trigger switch (15), and work package and one be used for quitting work the fast brake apparatus (19) of part motion, described brake apparatus (19) comprises brake drum (25), be wrapped in described brake drum (25) peripheral a brake band (27) and a brake bar (31), described brake bar (31) acts on the described brake band (27), make described brake band (27) to change between the second place by primary importance under the work package normal operating conditions and the work of braking work package, it is characterized in that: described brake device of electric tool further comprises recoil brake (21) and the inertia brake (23) that is used at diverse location control brake bar (31), described recoil brake (21) comprises can make the control lever (33) of described brake bar (31) around the rotation of first turning cylinder, described inertia brake (23) is controlled described brake bar (31) around the rotation of second turning cylinder, described first, the coaxial setting of second turning cylinder (29).
2. according to the brake device of electric tool described in the claim 1, it is characterized in that: described brake device of electric tool is a chain saw brake apparatus, described chain saw (1) is provided with one and extends the carrier bar (5) of the described housing (2) and the described work package that leads, wherein said work package is a saw chain, described inertia brake (23) comprises one first transfer element (39), and described first transfer element (39) is used to control described control lever (31) and rotates around described turning cylinder (29).
3. according to the brake device of electric tool described in the claim 2, it is characterized in that: described control lever (33) is provided with a connection piece (38), described connector (38) and the selectable engagement of described brake bar (31), when chain saw (1) operate as normal, described connector and brake bar (31) are thrown off, when the recoil brake starts, described connector (38) and brake bar (31) engagement.
4. according to the brake device of electric tool described in the claim 3, it is characterized in that: described control lever (33) one ends connect one second transfer element (49), and described second transfer element (49) is connected with a safety office (53).
5. according to the brake device of electric tool described in the claim 4, it is characterized in that: (53) are selectable is meshed with operating parts (17) in described safety office, when chain saw (1) operate as normal, safety office (53) engagement operations part (17), when the recoil brake started, safety office (53) threw off with operating parts (17).
6. brake device of electric tool, comprise a drive unit (11) that is arranged at housing (2), start the trigger switch (15) of drive unit (11), the operating parts (17) of control trigger switch (15), and work package and one be used for quitting work the fast brake apparatus (19) of part motion, described brake apparatus (19) comprises brake drum (25), be wrapped in described brake drum (25) peripheral a brake band (27) and a brake bar (31), described brake bar (31) acts on the described brake band (27), make described brake band (27) to change between the second place by primary importance under the work package normal operating conditions and the work of braking work package, it is characterized in that: described brake device of electric tool further comprises recoil brake (21) and the inertia brake (23) that is used at diverse location control brake bar (31), described recoil brake (21) comprises the control lever (33) of the described brake bar of control (31), described control lever (33) is by control a transmitting device and selectable linking to each other of described trigger switch (15), when the electric tool operate as normal, control transmitting device and trigger switch (15) engagement, when the recoil brake started, control transmitting device and trigger switch (15) were thrown off.
7. according to the brake device of electric tool described in the claim 6, it is characterized in that: described brake device of electric tool is a chain saw brake apparatus, described chain saw is provided with one and extends the carrier bar (5) of the described housing (2) and the described work package that leads, wherein said work package is a saw chain, and described inertia brake (23) comprises the braking transmitting device that connects described operating parts (17) and described brake bar (31).
8. according to the brake device of electric tool described in the claim 7, it is characterized in that: described control lever (33) is provided with a connection piece (38), described connector (38) can be selected engagement with described brake bar (31), when chain saw (1) operate as normal, described connector is thrown off in brake bar (31), when the recoil brake starts, described connector (38) and brake bar (31) engagement.
9. according to the brake device of electric tool described in the claim 8, it is characterized in that: described braking transmitting device (36) comprises first transfer element (39), switch block (41) and extension spring (45); Described control transmitting device (48) comprises second transfer element (49), stage clip (55) and safety office (53).
10. according to the brake device of electric tool described in the claim 9, it is characterized in that: described control lever (33) one ends connect one second transfer element (49).
11. the brake device of electric tool according to described in the claim 10 is characterized in that: described second transfer element (49) connects a safety office (53).
12. according to the brake device of electric tool described in the claim 11, it is characterized in that: (53) are selectable is meshed with operating parts (17) in described safety office, when chain saw (1) operate as normal, safety office (53) engagement operations part (17), when the recoil brake started, safety office (53) threw off with operating parts (17).
13. according to the brake device of electric tool described in any in the claim 9 to 12, it is characterized in that: described first transfer element (39) one ends are provided with guide finger (44), described guide finger (44) connects described extension spring (45), and is loaded by described extension spring (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810096801 CN101570027B (en) | 2008-04-30 | 2008-04-30 | Electric tool brake apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810096801 CN101570027B (en) | 2008-04-30 | 2008-04-30 | Electric tool brake apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101570027A true CN101570027A (en) | 2009-11-04 |
| CN101570027B CN101570027B (en) | 2013-01-30 |
Family
ID=41229573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810096801 Expired - Fee Related CN101570027B (en) | 2008-04-30 | 2008-04-30 | Electric tool brake apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101570027B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151903A (en) * | 2011-03-03 | 2011-08-17 | 浙江亚特电器有限公司 | Chain saw brake alarm structure |
| CN102172927A (en) * | 2011-01-11 | 2011-09-07 | 浙江亚特电器有限公司 | Brake structure of electric chain saw |
| CN102550307A (en) * | 2012-01-06 | 2012-07-11 | 浙江亚特电器有限公司 | Mechanical brake structure of pruning scissors |
| CN110270717A (en) * | 2018-03-15 | 2019-09-24 | 苏州宝时得电动工具有限公司 | Electric cutting tool |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4335514A (en) * | 1980-08-08 | 1982-06-22 | Black & Decker Inc. | Switch-brake interlock for chain saw |
| JP3263284B2 (en) * | 1995-09-04 | 2002-03-04 | 株式会社マキタ | Electric chainsaw |
| DE19931251A1 (en) * | 1999-07-07 | 2001-01-11 | Bosch Gmbh Robert | Chainsaw |
| DE102004020421B4 (en) * | 2004-04-27 | 2016-01-28 | Robert Bosch Gmbh | Motor chain saw with non-return brake and coast brake |
| CN2827677Y (en) * | 2005-06-27 | 2006-10-18 | 孔钊 | Brake device on chain saw |
| CN201235565Y (en) * | 2008-05-05 | 2009-05-13 | 苏州宝时得电动工具有限公司 | Electric tool brake device |
-
2008
- 2008-04-30 CN CN 200810096801 patent/CN101570027B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172927A (en) * | 2011-01-11 | 2011-09-07 | 浙江亚特电器有限公司 | Brake structure of electric chain saw |
| CN102151903A (en) * | 2011-03-03 | 2011-08-17 | 浙江亚特电器有限公司 | Chain saw brake alarm structure |
| CN102151903B (en) * | 2011-03-03 | 2012-08-22 | 浙江亚特电器有限公司 | Chain saw brake alarm structure |
| CN102550307A (en) * | 2012-01-06 | 2012-07-11 | 浙江亚特电器有限公司 | Mechanical brake structure of pruning scissors |
| CN102550307B (en) * | 2012-01-06 | 2013-12-18 | 浙江亚特电器有限公司 | Mechanical brake structure of pruning scissors |
| CN110270717A (en) * | 2018-03-15 | 2019-09-24 | 苏州宝时得电动工具有限公司 | Electric cutting tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101570027B (en) | 2013-01-30 |
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