CN101670596B - Chain saw - Google Patents
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- CN101670596B CN101670596B CN200810212988.2A CN200810212988A CN101670596B CN 101670596 B CN101670596 B CN 101670596B CN 200810212988 A CN200810212988 A CN 200810212988A CN 101670596 B CN101670596 B CN 101670596B
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Abstract
The invention discloses a chain saw, which comprises a shell, a chain wheel which is mounted in the shell and is used for driving a saw chain, and a link joint which guides the saw chain, wherein the link joint extends out of the shell, and can longitudinally move relative to the shell. The chain saw also comprises a saw chain tensioning device and a rotating device, wherein the saw chain tensioning device comprises a stressed part arranged on the link joint, and a driving part acting on the stressed part and driving the link joint to move longitudinally; the rotating device rotates the driving part and is provided with a central axis vertical to the link joint; and a radial engaging and disengaging device is arranged between the rotating device and the driving part. The technical scheme in the invention can cause the chain saw to tightly press the link joint at the same time of tensioning the saw chain, and is convenient in assembly, strong in man-machine functions, stable and not easy to abrade.
Description
Technical field
The present invention relates to a kind of chain saw, especially a kind of chain saw with chain tension adjusters.
Background technology
PCT patent application WO9833631 discloses a kind of chain saw with chain stretching device on August 6th, 1998, and wherein, displaying strain of chain plate of chain is fixed between two clamping disks, and is fixed on housing together with them, and can relatively vertically move by housing.A hitching post, through a hole in an eccentric wheel and the elongated hole on housing, twists to be fixed in and guided on housing, and among the clamping disk that can vertically move, eccentric wheel is fixed on housing by its bolt head.In order to tensioning saw chain, first bolt is needed to unclamp, rotate eccentric wheel, thus make bolt and clamping disk come directly towards direction to carrier bar to move, when saw chain reaches desired tensile force, stop operating eccentric wheel, and then tight a bolt, thus eccentric wheel and clamping disk and carrier bar are fixed on position set on housing by stressed effect.This saw chain tension method is relatively complicated, and carrier bar locking easily absent-mindedness, thus causes the tensile force of saw chain to relax, and adding the danger that saw chain is jumped off from carrier bar, to this, can only be solve by regularly saw chain being carried out follow-up tensioning.
For solving above-mentioned chain saw tensioning problem, Chinese patent notification number is that on November 10th, 2004, mandate disclosed a kind of chain saw to CN 1174841C, this chain saw has a chain tension adjusters, wherein, this chain saw has a housing, and have one sprocket wheel on the housing and a carrier bar aimed at this sprocket wheel are installed, this carrier bar stretches away and cyclically leads to the saw chain with sprocket engagement from housing, this carrier bar adjustably can be mounted relative to housing and sprocket wheel in the vertical movably by a tensioning apparatus, and tensioning apparatus has an eccentric wheel that can be fixed on the backstop on carrier bar and can rotate by means of a rotating element, this rotating element is by two shellies, outer hand wheel forms, in, outer hand wheel can be mutually plug-in, and relatively rotate around a common axis, wherein, interior handwheel can move vertically relative to housing and can be supported on carrier bar, outer hand wheel is connected to carry rotating manner with eccentric wheel, and between interior handwheel and outer hand wheel, and be all connected by an offside snap connectors between outer hand wheel with housing, after saw chain tension, this offside snap connectors can make interior handwheel and outer hand wheel can the connection of geo-stationary.By said structure, this chain saw is after saw chain tension, and carrier bar is not easily relaxed, and ensure that the effective tensile force of saw chain, but in the process of tensioning, need internal handwheel and outer hand wheel to operate respectively, and complicated operation, Study on Man-Machine Function is more weak.
For solving Study on Man-Machine Function problem, Chinese patent notification number is that CN1138620C discloses a kind of chain saw, this chain saw comprise one be rotatably supported in housing and for the saw chain that guided on carrier bar sprocket wheel, one for making that carrier bar vertically moves and having the chain tension adjusters that makes the eccentric wheel of carrier bar movement and a rotating device making eccentric wheel rotate, wherein, rotary connecting device between rotating device and eccentric wheel is formed as clamping clutch, regulates its transposition clamping power corresponding to required chain tension.This structure makes in saw chain tension process, and only need get final product the saw chain of tensioning simultaneously to a rotating device operation and compress carrier bar, easy to operate, Study on Man-Machine Function be strong, but set clamping clutch easily weares and teares, and stable not.
Summary of the invention
For the deficiencies in the prior art, the technical problem to be solved in the present invention is to provide a kind of chain saw, and this chain saw has strong, the stable and nonabradable chain tension adjusters of a Study on Man-Machine Function.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that
A kind of chain saw, comprise a housing, dress to hold in described housing and for driving the carrier bar of the sprocket wheel of saw chain and a described saw chain of guiding, described carrier bar stretches out by housing, and can vertically move by relatively described housing, described chain saw also comprises a chain tension adjusters, described chain tension adjusters comprise one be arranged at stressed member on described carrier bar and one act on described stressed member and the driving link driving carrier bar to vertically move, and rotate the rotating device of described driving link, described rotating device has the central axis of a vertical described carrier bar, rotating device is facing to carrier bar centrally the moving axially of axis, wherein, a radial arrangement of clutch is provided with between described rotating device and described driving link.
Described radial arrangement of clutch comprises first clutch part and second clutch part further, and described second clutch part and described rotating device keep geo-stationary.
Described first clutch part is selectable against described second clutch part by the radial elastic part bias voltage of a relatively described central axis.
Described first clutch part and described radial elastic part are supported on the bottom surface of described driving link described carrier bar dorsad.
The described driving link dorsad bottom surface of described carrier bar and an outer wall be fixedly installed on described bottom surface forms a revolving part, and described revolving part is coaxial with described driving link, described radial elastic part dorsad described first clutch part end against described outer wall.
Described revolving part is provided with at least one groove in the radial direction of relatively described rotating device central axis, and described first clutch part and described radial elastic part are contained in described groove.
Further, described chain saw also comprises one for closing the guard shield of described housing, and described tensioning apparatus is placed in described guard shield.
Described guard shield is provided with an opening, and described rotating device connects described driving link through described opening.
Described revolving part is provided with at least one connector in carrier bar side dorsad, and described connector is through the opening that described guard shield is arranged and be flexibly connected described guard shield.
Described revolving part is connected with an axial elasticity part in carrier bar side dorsad, and described axial elasticity part is revolving part described in described rotating device central axial direction bias voltage.
Further, described driving link is configured to an eccentric wheel, and described stressed member is configured to the stopper that is fixed on described carrier bar.
Technical solution of the present invention can make chain saw compress carrier bar while tensioning saw chain, and easy to assembly, Study on Man-Machine Function is strong, stable, not easy to wear.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the partial front elevation view after chain saw guard shield of the present invention moves;
Fig. 2 is that chain saw of the present invention is at tensioning apparatus sectional view;
Fig. 3 is chain saw tensioning device perspective exploded view of the present invention;
Fig. 4 is the eccentric wheel region top view of chain saw of the present invention along the I-I direction of Fig. 2;
Fig. 5 is that chain saw guard shield of the present invention moves front view after handwheel;
Fig. 6 is schematic perspective view inside chain saw handwheel of the present invention.
Wherein: 1, chain saw; 3, housing; 5, saw chain;
7, sprocket wheel; 9, carrier bar; 91, elongated hole;
11, guard shield; 111, outer burnishing surface; 112, shelly edge;
12, rotating device; 13, eccentric wheel; 14, stopper;
15, closing sleeve; 151, threaded portion; 152, flat side;
153, flange; 154, central axis; 17, bolt;
19, briquetting; 21, back-up ring; 23, handwheel;
231, the axle collar; 232, flange; 233, ring surface;
25, groove; 27, the first clutch part; 271, projection;
29, the second clutch part; 291, arc groove; 31, revolving part;
311, outer wall; 33, elongate recesses; 35, radial spring;
371, bridge piece; 372, spring-latch; 373, fan-shaped latch;
374, seal face; 39, axle spring; 41, hollow gear
Detailed description of the invention
As shown in Figure 1, chain saw 1 involved in the present invention comprises a housing 3, one for driving, the sprocket wheel 7 of saw chain 5 is rotating to be bearing in this housing 3, and wherein, this sprocket wheel 7 is driven (not shown) by a transmission device by power set, simultaneously, this chain saw 1 also comprises a carrier bar 9, and this carrier bar 9 one end is supported in housing 3, the other end extending longitudinally go out this housing 3, one saw chain 5 is set on sprocket wheel 7 and carrier bar 9, and can directed along carrier bar 9 boundary cycle.In order to regulate the tension force of saw chain 5, what carrier bar 9 can be longitudinal moves relative to described housing 3, makes the gap variable between carrier bar 9 and sprocket wheel 7, and saw chain 5 can be tensioned or lax.
As shown in Figure 1 to Figure 3, for tensioning saw chain 5 and by carrier bar 9, of being fixed on housing 3 is suitable on the position of adjusted saw chain 5 tensile force, this chain saw 1 also has a chain tension adjusters, and this tensioning apparatus is placed in one in the guard shield 11 of closure casing 3.Wherein, this tensioning apparatus comprises a rotating eccentric wheel 13 near carrier bar 9 side, the rotating device 12 of control eccentric 13 rotation and a radial arrangement of clutch, described eccentric wheel 13 abuts against a stopper 14 be arranged on carrier bar 9, when rotating device 12 operate described eccentric wheel 13 rotate time, described eccentric wheel 13 is against described stopper 14 and promote stopper 14 and vertically move outside housing 3 along housing 3, described stopper 14 drives described carrier bar 9 to vertically move to leaving housing 3 direction immediately, make carrier bar 9 away from sprocket wheel 7, saw chain 5 is tensioned, wherein, described eccentric wheel 13 also can be configured to turbine, gear etc., described stopper 14 also can be configured to scroll bar, tooth bar etc., as long as described rotating device 12 can be made to make the relative housing 3 of described carrier bar 9 vertically move by transmission rear-drive.
Described radial arrangement of clutch is arranged at the revolving joint between this rotating device 12 and eccentric wheel 13, for connecting described rotating device 12 and described eccentric wheel 13, this radial arrangement of clutch corresponds to tension force needed for required saw chain 5 and adjusts its radial clutching force in advance.In tensioning process, when being also tensioned in the gathering sill that saw chain 5 falls into carrier bar 9 longitudinal edge completely simultaneously, carrier bar 9 moving resistance slowly improves, rotating device 12 is rotated further, until after mobile carrier bar 9 exceeded the radial clutching force in radial arrangement of clutch by the binding force that saw chain 5 produces, radial arrangement of clutch makes rotating device 12 and described eccentric wheel 13 throw off, rotating device 12 has continued to compress carrier bar 9 and has worked, when eccentric wheel 13 then keeps throwing off, state is constant, and namely saw chain 5 keeps certain tensile force constant.Therefore, radial arrangement of clutch ensure that saw chain 5 always has identical chain tension after having operated saw chain tension, this tension force is determined by the radial clutching force of the radial arrangement of clutch regulating out in the factory, feel irrelevant with the individual of user, user in saw chain tension process can be tensioned to easily as best effort process and pre-designed chain tension state.
In best mode for carrying out the invention, rotating device 12 comprises the handwheel 23 of a closing sleeve 15 and and this closing sleeve 15 geo-stationary, described closing sleeve 15 has a central axis 154, described eccentric wheel 13 is rotatably connected by described radial arrangement of clutch with described closing sleeve 15, and described closing sleeve 15 central axis 154 is coaxial with described eccentric wheel 13 turning cylinder center line.This closing sleeve 15 inside is configured a threaded portion 151, and outside is then configured to a flat side 152, and this closing sleeve 15 is coordinated by the external thread part of internal thread part 151 and a bolt 17, and this closing sleeve 15 can be tightened on this bolt 17.The end of this bolt 17 is fixed in housing 3, and the vertical described housing 3 in the threaded portion of this bolt 17 stretches out, and be connected with described closing sleeve 15 through after the elongated hole 91 extending longitudinally that described carrier bar 9 is arranged, the vertical described carrier bar 9 of this closing sleeve 15 is arranged.Wherein, this closing sleeve 15 is arranged with a briquetting 19 near carrier bar 9 one end, this briquetting 19 is arranged between described radial arrangement of clutch and described carrier bar 9, and for compressing carrier bar 9 after chain saw 1 tensioning, to keep the rate of tension of chain saw 1, make in the course of the work, saw chain 5 can not relax because of the vibrations of chain saw 1, causes danger to user.Meanwhile, described closing sleeve 15 cover on the one end near carrier bar 9 has a back-up ring 21, and this back-up ring 21, for spacing described briquetting 19, to prevent this briquetting 19 from deviating from from this closing sleeve 15, ensures the stability of structure.And the other end of this closing sleeve 15 by one with the handwheel 23 of this closing sleeve 15 geo-stationary surround, with this closing sleeve 15 user-friendly, for this reason, closing sleeve 15 has the outstanding flange 153 of a radial direction on the end deviating from carrier bar 9, being arranged in handwheel 23 and being bearing on the axle collar 231 taken shape in handwheel 23 by its upper side of its form fit, and by spacing with this handwheel 23 all-in-one-piece flange 232 on bottom surface.
Described guard shield 11 has a circular shelly groove 25 coaxial with closing sleeve 15, this groove 25 and described handwheel 23 form fit, make this handwheel 23 can insert in described groove 25, and described closing sleeve 15 can be driven to rotate relative to the guard shield 11 covering sprocket wheel 7 and saw chain 5 tensioning apparatus, tensioning saw chain 5 and compression carrier bar 9.
As shown in Figures 2 to 4, described radial arrangement of clutch comprises first clutch part 27 and second clutch part 29, described eccentric wheel 13 is without connecting described first clutch part 27 in relative rotation, this first clutch part 27 is arranged in eccentric wheel 13 bottom surface of carrier bar 9 side dorsad and the confined space of a revolving part 31 composition, wherein, described revolving part 31 is coaxial with described eccentric wheel 13 and without being connected in relative rotation.In the radial direction of carrier bar 9 side, multiple elongate recesses 33 is provided with at described revolving part 31, described elongate recesses 33 can hold the first clutch part 27 closed with this elongate recesses 33 quantity and matching form, this first clutch part 27 inserts in elongate recesses 33, and radial spring 35 connects this elongate recesses 33 bottom land excessively, described elongate recesses 33 bottom land be by the outer wall 311 in described revolving part 31 wherein one section formed, described in described radial spring 35 bias voltage, the first clutch part 27 is away from this elongate recesses 33 bottom land, this first clutch part 27 is also provided with a projection 271 in another section of this elongate recesses 33 bottom land dorsad, in best mode for carrying out the invention, this projection 271 is constructed a semi-cylindrical, and be integrally constituted with the first clutch part 27.
The second clutch part 29 that this radial arrangement of clutch comprises by flat side 152 act on closing sleeve 15 geo-stationary to be set in described closing sleeve 15 peripheral, and closing sleeve 15 synchronous axial system can be followed, the second clutch part 29 axis and described closing sleeve central axis coaxial.Simultaneously, described second clutch part 29 described first off member 27 relevant position is arranged between handwheel 23 on described closing sleeve 15 and briquetting 19 coordinating, and be provided with the arc groove 291 of cooperation first clutch part 27 projection 271, under normal conditions, on described first clutch part, the projection 271 of 27 is contained in the arc groove 291 of described second clutch part 29.
As Fig. 2, as shown in Figure 5, the revolving part 31 of described placement first clutch part 27 is provided with several bridge piece 371 in carrier bar 9 side dorsad, and described bridge piece 371 overlaps through the opening arranged in described guard shield 11 groove 25 and described guard shield 11, make the described guard shield 11 of the connection of the first clutch part 27 and eccentric wheel 13 safety and stability, simultaneously, described closing sleeve 15 is through the center drilling of described revolving part 31, and keep geo-stationary by flat side 152 effect with this revolving part 31, make this revolving part 31 and closing sleeve 15 can synchronous axial system, while rotation, described bridge piece 371 can move around described guard shield 11 groove 25 edge of opening.Simultaneously, axle spring 39 is provided with between handwheel 23 and described revolving part 31, revolving part 31 described in this axle spring 39 bias voltage, and by described revolving part 31 to the first clutch part 27 be contained in revolving part and eccentric wheel 13 1 power towards carrier bar 9, make, when carrier bar 9 stopper 14 withstands eccentric wheel 13 end face near carrier bar 9 side, to automatically revert to the eccentric wheel face against eccentric wheel 13 by rotation handwheel 23.Further, by this axle spring 39 bias voltage, described briquetting 19 can be made to engage with described back-up ring 21, thus ensure the described closing sleeve 15 of the stable connection of briquetting 19.
As shown in Figures 3 to 6, this guard shield 11 groove 25 open circumferential edge is arranged to a hollow gear 41, described handwheel 23 with its smooth bottom surface axially mounting on the outer burnishing surface 111 of guard shield 11, in order to accept handwheel 23, hollow gear 41 region that guard shield 11 is opened at groove 25 has a shelly edge 112, and handwheel 23 just sinks to wherein.
At described revolving part 31 in carrier bar 9 side dorsad also with multiple punching structure, they are constructed to the circular arc spring-latch 372 with axis and radial elastic in radial outer region, these spring-latch 372 respectively carry fan-deck card tooth 373 on its free outer end, spring-latch 372 is provided with seal face 374 that is vertical and spring-latch 372, and this seal face 374 is preferably arranged at the latch rear end of described fan-shaped latch 373, described handwheel is in the inside near revolving part 31, be provided with the ring surface 233 coordinating described seal face 374, this ring surface 233 is coaxial with described revolving part 31, after movable eccentric wheel 13 tensioning saw chain is with by handwheel 23, continue rotation hand wheel 23, handwheel 23 axially continues mobile, while compressing carrier bar 9 by briquetting 19, seal face 374 on ring surface 233 engage spring tongue 372 set on handwheel 23, thus make spring-latch 372 elastic deformation, fan-shaped latch 373 on spring-latch 372 engages hollow gear 41, fastening described handwheel 23.
By appeal structure, the saw chain tension of chain saw of the present invention and carrier bar compress be achieved in that when user take chain saw 1 need tensioning saw chain 5 time, first described guard shield 11 is buckled in the relevant position on housing 3, rotate handwheel 23 afterwards, handwheel 23 drives described closing sleeve 15 to be moved axially facing to carrier bar 9 on described bolt 17 by threaded engagement, simultaneously by engaging with the first clutch part 27 with the second clutch part 29 of this closing sleeve 15 geo-stationary, and drive the first clutch part 27 to rotate, first clutch part 27 band movable eccentric wheel 13 rotates, thus under eccentric wheel 13 acts on, carrier bar 9 vertically moves, saw chain 5 starts tensioning, now, the tensile force of saw chain 5 is less than the radial spring force 35 in the first clutch part 27 pre-set in factory, be rotated further handwheel 23, after saw chain 5 tensioning reaches the optimum tensile force pre-set in factory, the radial spring force pre-set described in the tensile force of saw chain 5 is greater than, the first clutch part 27 and the second clutch part 29 are thrown off, eccentric wheel 13 keeps static, and saw chain 5 rate of tension remains unchanged.Handwheel 23 rotates and the briquetting 19 driving closing sleeve 15 and closing sleeve 15 to connect continues to move to carrier bar 9 direction, compress carrier bar 9, simultaneously, the ring surface 233 that handwheel 23 is arranged engages the seal face 374 on described spring-latch 372, thus make the fan-shaped latch 373 that spring-latch 372 is arranged engage the hollow gear of described guard shield 11 slot opening, 41, fastening described handwheel 23, completes tensioning.
Claims (11)
1. a chain saw, comprise a housing (3), dress to hold in described housing (3) and for driving the carrier bar (9) of the sprocket wheel of saw chain (5) (7) and the described saw chain (5) that leads, described carrier bar (9) stretches out by housing (3), and can relatively described housing (3) vertically move, described chain saw (1) also comprises a chain tension adjusters, described chain tension adjusters comprise one be arranged at stressed member (14) on described carrier bar (9) and one act on described stressed member (14) and the driving link (13) driving carrier bar (9) to vertically move, and rotate the rotating device (12) of described driving link (13), described rotating device (12) has the central axis (154) of a vertical described carrier bar (9), described rotating device (12) comprises the handwheel (23) of a closing sleeve (15) and and this closing sleeve (15) geo-stationary, handwheel (23) drives described closing sleeve (15) to be moved axially at the upper carrier bar (9) that faces toward of bolt (17) by threaded engagement, described rotating device (12) is facing to described carrier bar (9) moving axially along described central axis (154), it is characterized in that: between described rotating device (12) and described driving link (13), be provided with a radial arrangement of clutch.
2. chain saw according to claim 1, it is characterized in that: described radial arrangement of clutch comprises first clutch part (27) and second clutch part (29), described second clutch part (29) and described rotating device (12) keep geo-stationary.
3. chain saw according to claim 2, is characterized in that: described first clutch part (27) is selectable against described second clutch part (29) by radial elastic part (35) bias voltage of a relatively described central axis.
4. chain saw according to claim 3, is characterized in that: described first clutch part (27) and described radial elastic part (35) are supported on the bottom surface of described driving link (13) described carrier bar (9) dorsad.
5. chain saw according to claim 4, it is characterized in that: described driving link (13) the dorsad bottom surface of described carrier bar (9) and an outer wall be fixedly installed on described bottom surface (311) forms a revolving part (31), described revolving part (31) is coaxial with described driving link (13), and described radial elastic part (35) dorsad described first clutch part (27) is held against described outer wall (311).
6. chain saw according to claim 5, it is characterized in that: described revolving part (31) is provided with at least one groove (33) in the radial direction of relatively described rotating device central axis (154), described first clutch part (27) and described radial elastic part are contained in described groove (33).
7. according to the chain saw in claim 5 to 6 described in any one, it is characterized in that: described chain saw (1) also comprises one for closing the guard shield (11) of described housing, and described tensioning apparatus is placed in described guard shield (11).
8. chain saw according to claim 7, is characterized in that: described guard shield (11) is provided with an opening, and described rotating device (12) connects described driving link (13) through described opening.
9. chain saw according to claim 8, it is characterized in that: described revolving part (31) is provided with at least one connector (371) in carrier bar (9) side dorsad, described connector (371) is through the opening that described guard shield is arranged and be flexibly connected described guard shield (11).
10. chain saw according to claim 9, it is characterized in that: described revolving part (31) is connected with an axial elasticity part (39) in carrier bar (9) side dorsad, and described axial elasticity part (39) is revolving part (31) described in the bias voltage of described rotating device central axis (154) direction.
11. chain saws as claimed in any of claims 1 to 6, is characterized in that: described driving link (13) is configured to an eccentric wheel, and described stressed member (14) is configured to the stopper that is fixed on described carrier bar (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810212988.2A CN101670596B (en) | 2008-09-10 | 2008-09-10 | Chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810212988.2A CN101670596B (en) | 2008-09-10 | 2008-09-10 | Chain saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101670596A CN101670596A (en) | 2010-03-17 |
| CN101670596B true CN101670596B (en) | 2015-04-22 |
Family
ID=42018120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810212988.2A Active CN101670596B (en) | 2008-09-10 | 2008-09-10 | Chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101670596B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8932114B2 (en) * | 2009-06-25 | 2015-01-13 | Blount, Inc. | Chain link sharpening method and apparatus |
| CN102441920B (en) * | 2010-10-01 | 2014-10-08 | 苏州宝时得电动工具有限公司 | Chain saw |
| WO2012126501A1 (en) * | 2011-03-18 | 2012-09-27 | Husqvarna Ab | Chainsaw with guide bar clamping and chain tensioning assembly |
| CN102284745A (en) * | 2011-08-15 | 2011-12-21 | 浙江格瑞斯实业有限公司 | Chain saw |
| DE102012215461A1 (en) * | 2012-06-28 | 2014-01-02 | Robert Bosch Gmbh | Machine tool separating device |
| DE102013003850A1 (en) * | 2013-03-06 | 2014-09-25 | Andreas Stihl Ag & Co. Kg | Hand-held implement with a tensioning device for a chain |
| CN107600209A (en) * | 2016-07-12 | 2018-01-19 | 苏州宝时得电动工具有限公司 | Pedrail mechanism and the hay mover with the pedrail mechanism |
| CN110788938A (en) * | 2019-11-29 | 2020-02-14 | 常州格力博有限公司 | Chain saw |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3688522A (en) * | 1969-12-29 | 1972-09-05 | Hilti Ag | Overload clutch permitting torque transmission during overload |
| US4819779A (en) * | 1986-04-08 | 1989-04-11 | Andreas Stihl | Centrifugal clutch |
| CN1316944A (en) * | 1999-07-07 | 2001-10-10 | 罗伯特·博施有限公司 | Chain saw |
-
2008
- 2008-09-10 CN CN200810212988.2A patent/CN101670596B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3688522A (en) * | 1969-12-29 | 1972-09-05 | Hilti Ag | Overload clutch permitting torque transmission during overload |
| US4819779A (en) * | 1986-04-08 | 1989-04-11 | Andreas Stihl | Centrifugal clutch |
| CN1316944A (en) * | 1999-07-07 | 2001-10-10 | 罗伯特·博施有限公司 | Chain saw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101670596A (en) | 2010-03-17 |
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Application publication date: 20100317 Assignee: POSITEC MACHINERY (CHINA) CO., LTD. Assignor: Baoshide Electric Tools Co., Ltd., Suzhou Contract record no.: 2015320010084 Denomination of invention: Mechanical chain saw Granted publication date: 20150422 License type: Exclusive License Record date: 20150602 |
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