CN2800736Y - Chain saw - Google Patents
Chain saw Download PDFInfo
- Publication number
- CN2800736Y CN2800736Y CN 200520073391 CN200520073391U CN2800736Y CN 2800736 Y CN2800736 Y CN 2800736Y CN 200520073391 CN200520073391 CN 200520073391 CN 200520073391 U CN200520073391 U CN 200520073391U CN 2800736 Y CN2800736 Y CN 2800736Y
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- CN
- China
- Prior art keywords
- tusk
- chain
- cam pack
- chain saw
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a chain saw which is provided with a chain tensioner. The utility model comprises a cam assembly, a rotating assembly of the rotatable cam assembly, a matching and connecting piece which is arranged between the cam assembly and a chain plate, and a cover plate which is matched and connected to a shell, wherein the rotating assembly comprises a pressure element, a tensioning hand wheel and a locking wheel, the pressure element corresponding to the shell can axially move and is supported on the chain plate, the tensioning hand wheel is sheathed on the pressure element, the tensioning hand wheel and the pressure element can correspondingly rotate around a same shaft, and the locking wheel is matched and connected with the cover plate. When the chain saw is in a chain tension regulating state, the tension hand wheel is matched and connected with the cam assembly, and the locking wheel and the cam assembly are separated. When the chain saw is in a locked state, the tensioning hand wheel and the cam assembly are separated, and the locking wheel is matched and connected with the cam assembly. Thus, by using the mutual matching and connecting conversion among the tensioning hand wheel, the locking wheel and the cam assembly, and consequently, the excessive abrasion of the locking element can be effectively avoided. The tension operation force and the locked operation force of the saw blade can be reduced.
Description
Affiliated technical field
The utility model relates to a kind of garden class instrument, especially a kind of chain saw.
Background technology
Chain saw in the class instrument of garden is typically provided with casing, and motor is installed in casing, and motor links to each other with a sprocket wheel by transmission device.On sprocket wheel, connected chain, thereby this chain cuts branch around chain crop rotation high speed rotating under the driving of motor.One carrier bar longitudinal extension is outside casing and be arranged on the position that aligns with this sprocket wheel, and above-mentioned chain also is set on this carrier bar simultaneously, so that carrier bar leads to chain.
Such chain saw generally also is provided with the saw blade tensioning apparatus in order to guarantee saw blade tensioning and locking in use.This class saw blade tensioning apparatus has following several frame mode substantially: thus a kind of be to come the tensioning saw blade from directly moving the distance that changes between carrier bar and the sprocket wheel with screw thread pulling connecting plate; This structure self has self-locking property owing to the screw thread tensioning, general Hui Song in use not, but be difficult to realize that on this structure carrier bar tensioning and the integrated and instrument of exempting from that compresses regulate, and regulate and need rotation much to enclose screw threads, operate easy inadequately.The second way is to come quick tensioning saw blade with cam pack face or helicoid at the relative position that its radial push carrier bar changes itself and sprocket wheel; But only class formation is in order to realize quick tensioning, and the cam pack lift of design is big and self can't realize self-locking, though use preceding tensioning like this saw blade in use be easy to Hui Song.
At the second way, self-locking after a kind of structure of pinning the tensioning handwheel with the Elastic Teeth on the cover plate end face realizes tensioning has appearred, but in actual use since Elastic Teeth all the time under certain pressure with the engagement of the end face tooth of tensioning handwheel, engaging tooth is worn easily on the one hand, need during tensioning extra power to overcome the engaging pressure of Elastic Teeth on the other hand, use relatively effort.
Summary of the invention
Deficiency for the saw blade tensioning apparatus that overcomes existing chain saw, the utility model provides a kind of chain saw that is provided with improved chain stretching device, this tensioning apparatus can be avoided quick tensioning and locking saw blade the excessive wear of locking element in the use again and lost efficacy.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of chain saw, be provided with casing, be installed in the sprocket wheel on the casing, the carrier bar that aligns with described sprocket wheel and connect chain on described sprocket wheel, described carrier bar extends in outside the casing and to described chain and leads, described chain saw also is provided with chain stretching device, this chain stretching device can be regulated described carrier bar makes its described relatively casing and sprocket wheel be offset along the direction that described carrier bar extends, described chain stretching device comprises cam pack, the rotary components of rotatable described cam pack, be arranged on the counterpart between described cam pack and the described carrier bar and connect cover plate on described casing, described rotary components can lock the described relatively casing of described cam pack, it is characterized in that: described rotary components comprises clamping element, tensioning handwheel and locking wheel, described clamping element can move axially and be supported on the described carrier bar by described relatively casing, described tensioning handwheel sleeve is located on the described clamping element, and described tensioning handwheel and described clamping element can carry out relative the rotation around coaxial, described locking wheel and described cover plate are matched, when described chain saw was in the chain tension adjustment state, described tensioning handwheel and the matched and described locking wheel of described cam pack and described cam pack were separated; When described chain saw was in the lock state, described tensioning handwheel and described cam pack were separated and described locking wheel and described cam pack are matched.
Further be, described locking wheel is arranged between described cam pack and the described cover plate, and be respectively equipped with the 5th tusk and the 6th tusk on its inner ring and the outer ring, and the inboard of the outer ring of described cam pack and described cover plate is respectively equipped with the 3rd tusk and the 7th tusk, described the 5th tusk is optionally matched with described the 3rd tusk, and described the 6th tusk and described the 7th tusk are matched.
Further be, described tensioning handwheel can described relatively cover plate moves axially and can push described locking wheel, and this tensioning handwheel is provided with the 4th tusk, and described the 4th tusk is optionally matched with the 3rd tusk of described cam pack.The beneficial effects of the utility model are that its saw blade tensioning apparatus connects by the slippage each other of tensioning handwheel, locking wheel and cam pack, thereby effectively avoids the excessive wear of locking element, and reduces the operating physical force to saw blade tensioning and locking.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the partial sectional view corresponding to chain saw of the present utility model, and wherein this chain saw is in the tensioning adjustment state.
Fig. 2 is the three-dimensional exploded view of the saw blade tensioning apparatus of Fig. 1 chain saw.
Fig. 3 is the stereogram of the cover plate of the tensioning apparatus among Fig. 2.
Fig. 4 is the enlarged drawing of a circle in Fig. 1.
Fig. 5 is the partial sectional view that the chain saw among Fig. 1 is in the lock state.
Fig. 6 is the enlarged drawing of b circle in Fig. 5.
Among the figure: 1. the horizontal Y-axis of casing 2. motor 3. transmission devices, 4. sprocket wheel 5. chains, 6. carrier bar 9. cam packs, 11. rotary components 13. counterparts, 14. cylindrical portion 15. cover plates, 16. knob 17. cam panels, 18. jog 19. first tusks 20. the 4th tusk 21. clamping elements 22. the 5th tusk 23. tensioning handwheels 24. the 6th tusk 25. locking wheels, 26. second tusk 27. breast wheels 28. the 3rd tusk 29. clamping pads 30. the 7th tusk 31. lock-screws, 32. second flexible member 33. first flexible members 34. the 3rd flexible member 35. protuberances, 37. X. of pushing section
Embodiment
With reference to Fig. 1, be a kind of chain saw corresponding to embodiment of the present utility model, it is provided with casing 1, and motor 2 is installed in casing 1, and motor 2 links to each other with a sprocket wheel 4 by transmission device 3, and this sprocket wheel 4 is installed in outside the casing 1.On sprocket wheel 4, connected chain 5, thereby this chain 5 is made high speed rotating cutting branch around sprocket wheel 4 under the driving of motor 2.One carrier bar, 6 longitudinal extensions are outside casing 1 and be arranged on the position that aligns with this sprocket wheel 4, and above-mentioned chain 5 also is set on this carrier bar 6 simultaneously, so that carrier bar 6 and it is led.
With further reference to Fig. 2 to Fig. 4, above-mentioned chain saw also is provided with chain stretching device 7, and this chain stretching device 7 is used to regulate carrier bar 6, and the direction X (promptly laterally) that its relative casing 1 and sprocket wheel 5 are extended along carrier bar 6 is offset, thus tensioning and lock above-mentioned chain 5.Described chain stretching device 7 comprise cam pack, rotatable described cam pack rotary components, be arranged on the counterpart 13 between described cam pack and the described carrier bar 6 and connect cover plate 15 on described casing 1.
Above-mentioned cam pack is provided with cam 9 and the breast wheel 27 matched with cam 9.This cam 9 comprises first tusk 19 that cam pack panel 17 is fixedly linked.This breast wheel 27 is respectively equipped with second tusk 26 and the 3rd tusk 28 in the form of a ring on its inner ring and the outer ring, wherein second tusk 26 is meshed with first tusk 19 of above-mentioned cam 9.
Above-mentioned rotary components 11 is installed in outside the cover plate 15, and comprises clamping element 21, tensioning handwheel 23 and locking wheel 25, and wherein tensioning handwheel 23, locking wheel 25 are also in the form of a ring.This clamping element 21 can carry out the cylindrical portion 14 that axial Y (bearing of trend that promptly is parallel to motor 2) moved and be provided with main part 12 and autonomous body 12 outside vertically extending hollows relative to described casing 1, and wherein main part 12 is provided with knob 16.Above-mentioned cam pack is relatively-movable to be set on the cylindrical portion 14 of described clamping element 21.Be provided with first flexible member 33 between first tusk 19 of the main part 12 of described clamping element 21 and described cam pack.In addition, a supporting pad 29 is arranged between cylindrical portion 14 and the carrier bar 6, and clamping element 21 is supported on the described carrier bar 6 by this supporting pad 29 like this.One lock-screw 31 is fixedly connected on the casing 1 and passes carrier bar 6 and is threaded mutually with the hollow columnar portion 14 of clamping element 21 with supporting pad 29.Described tensioning handwheel 23 is set on the described clamping element 21 movably, and described tensioning handwheel 23 can carry out relative the rotation around coaxial Y with described clamping element 21.The pushing portion 37 that this tensioning handwheel 23 extends internally cyclic lug 35 and extends vertically downward from protuberance 35, and be provided with the 4th tusk 20 in the inboard of this pushing portion 37.In addition, the outer ring of tensioning handwheel 23 is provided with the jog of being convenient to grip 18.Above-mentioned locking wheel 25 is positioned at the below of pushing portion 37, is convenient to pushing portion 37 and optionally pushes it, and be respectively equipped with the 5th tusk 22 and the 6th tusk 24 on its inner ring and the outer ring.In addition, be provided with second flexible member 32 between locking wheel 25 and the cover plate 15.The breast wheel 27 of above-mentioned cam pack is arranged on the inboard of tensioning handwheel 23 and locking wheel 25, and its 3rd tusk 28 optionally is meshed with the 4th tusk 20 of described tensioning handwheel 23 or the 5th tusk 22 of locking wheel 25.
Described counterpart 13 stretches out from described carrier bar 6 one, and when the saw saw was in the lock state, this counterpart 13 contacted with the cam 17 of cam pack.
Above-mentioned cover plate 15 is relatively-movable to connect on casing 1 and stretches out and be provided with the 7th tusk 30.Locking wheel 25 is arranged between the 7th tusk 30 and the breast wheel 27, and the 7th tusk 30 is matched with the 6th tusk 24 of locking wheel 25.In addition, be provided with the 3rd flexible member 34 between the protuberance 35 of this cover plate 15 and tensioning handwheel 23.
The corresponding the utility model saw blade 5 of Fig. 5 is in the partial sectional view of the chain saw of tensioning adjustment state.Press down regulating wheel handwheel 23 earlier, make tensioning handwheel 23 and breast wheel 27 be meshing with each other, and locking wheel 25 breaks away from mutually with breast wheel 27 under the downward pushing effect of the pushing portion 37 of tensioning handwheel 23, and rotate tensioning handwheel 23 then to drive breast wheel 27 rotations, and the rotation of the rotating band moving cam 9 of breast wheel 27, make counterpart 13 on the cam panel 17 ejection carrier bars 6, and thereby make carrier bar 6 produce away from laterally the moving of sprocket wheel 4, thereby chain 5 is tensioned.Be back to Fig. 1, after chain 5 is tensioned, unclamp tensioning handwheel 23, under the acting in conjunction of second flexible member 32 and the 3rd flexible member 34, tensioning handwheel 23 and locking wheel 25 are made progress ejection and are turned back to initial position, like this, tensioning handwheel 23 breaks away from breast wheels 27 and locking wheel 25 is meshed with breast wheel 27, in addition this moment locking wheel 25 with connect (engagement) of cover plate 15, thereby effectively stoped the revolution of breast wheel 27, also promptly stoped the Hui Song of cam pack, thereby guaranteed when chain 5 is tensioned locked again.At last, rotatably compress the knob 16 of element 21, compress mutually with carrier bar 6 by lock-screw 31, chain saw is in the lock state like this, can normally be used.
Claims (10)
1. chain saw, be provided with casing, be installed in the sprocket wheel on the casing, the carrier bar that aligns with described sprocket wheel and connect chain on described sprocket wheel, described carrier bar extends in outside the casing and to described chain and leads, described chain saw also is provided with chain stretching device, this chain stretching device can be regulated described carrier bar makes its described relatively casing and sprocket wheel be offset along the direction that described carrier bar extends, described chain stretching device comprises cam pack, the rotary components of rotatable described cam pack, be arranged on the counterpart between described cam pack and the described carrier bar and connect cover plate on described casing, described rotary components can lock the described relatively casing of described cam pack, it is characterized in that: described rotary components comprises clamping element, tensioning handwheel and locking wheel, described clamping element can move axially and be supported on the described carrier bar by described relatively casing, described tensioning handwheel sleeve is located on the described clamping element, and described tensioning handwheel and described clamping element can carry out relative the rotation around coaxial, described locking wheel and described cover plate are matched, when described chain saw was in the chain tension adjustment state, described tensioning handwheel and the matched and described locking wheel of described cam pack and described cam pack were separated; When described chain saw was in the lock state, described tensioning handwheel and described cam pack were separated and described locking wheel and described cam pack are matched.
2. chain saw according to claim 1, it is characterized in that: described locking wheel is arranged between described cam pack and the described cover plate, and be respectively equipped with the 5th tusk and the 6th tusk on its inner ring and the outer ring, and the inboard of the outer ring of described cam pack and described cover plate is respectively equipped with the 3rd tusk and the 7th tusk, described the 5th tusk is optionally matched with described the 3rd tusk, and described the 6th tusk and described the 7th tusk are matched.
3. chain saw according to claim 2, it is characterized in that: described tensioning handwheel can described relatively cover plate moves axially and can push described locking wheel, this tensioning handwheel is provided with the 4th tusk, and described the 4th tusk is optionally matched with the 3rd tusk of described cam pack.
4. according to claim 2 or 3 described chain saws, it is characterized in that: the breast wheel that described cam pack is provided with the cam panel, is fixedly connected on first tusk on the cam panel and is meshed with described first tusk, the inner ring of this breast wheel and outer ring are respectively equipped with second tusk and described the 3rd tusk, and described first tusk is meshed with described second tusk.
5. chain saw according to claim 1 is characterized in that: described cam pack is relatively-movable to be set on the described clamping element.
6. chain saw according to claim 1 is characterized in that: be provided with first flexible member between described clamping element and the described cam pack.
7. chain saw according to claim 1 is characterized in that: be provided with second flexible member between described locking wheel and the described cover plate.
8. chain saw according to claim 1 is characterized in that: be provided with the 3rd flexible member between described tensioning handwheel and the described cover plate.
9. chain saw according to claim 1 is characterized in that: described counterpart stretches out from described carrier bar one.
10. chain saw according to claim 1 is characterized in that: a lock-screw is threaded mutually with described clamping element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073391 CN2800736Y (en) | 2005-07-05 | 2005-07-05 | Chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073391 CN2800736Y (en) | 2005-07-05 | 2005-07-05 | Chain saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2800736Y true CN2800736Y (en) | 2006-08-02 |
Family
ID=36845435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520073391 Expired - Fee Related CN2800736Y (en) | 2005-07-05 | 2005-07-05 | Chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2800736Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355986A (en) * | 2009-03-18 | 2012-02-15 | 加德纳制造有限责任公司 | Quick-tightening device for chain saw and chain unit for same |
| CN110238915A (en) * | 2019-05-14 | 2019-09-17 | 嘉兴劲境电子商务有限公司 | A kind of numerically-controlled machine tool of rapid changing knife |
-
2005
- 2005-07-05 CN CN 200520073391 patent/CN2800736Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355986A (en) * | 2009-03-18 | 2012-02-15 | 加德纳制造有限责任公司 | Quick-tightening device for chain saw and chain unit for same |
| CN102355986B (en) * | 2009-03-18 | 2014-09-17 | 胡斯华纳有限公司 | Quick-tightening device for chain saw and chain unit for same |
| CN110238915A (en) * | 2019-05-14 | 2019-09-17 | 嘉兴劲境电子商务有限公司 | A kind of numerically-controlled machine tool of rapid changing knife |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Kong Zhao Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060802 Termination date: 20090705 |