CN105134894A - Tool-free adjusting structure for chain saw chain tensity - Google Patents
Tool-free adjusting structure for chain saw chain tensity Download PDFInfo
- Publication number
- CN105134894A CN105134894A CN201510410470.XA CN201510410470A CN105134894A CN 105134894 A CN105134894 A CN 105134894A CN 201510410470 A CN201510410470 A CN 201510410470A CN 105134894 A CN105134894 A CN 105134894A
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- China
- Prior art keywords
- worm gear
- chain
- large worm
- cover plate
- wheel cover
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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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a tool-free adjusting structure for the chain saw chain tensity. The tool-free adjusting structure comprises a moving block fixedly connected with a chain plate of a positioning chain, the moving block is in threaded connection with one end of a lead screw, a small worm gear is arranged at the other end of the lead screw, and a combination of the small worm gear, the lead screw and the moving block is fixed to one side of a chain wheel cover plate through a small worm gear cover; and the small worm gear is meshed with a large worm gear arranged on the other side of the chain wheel cover plate in a positioned manner, a connecting groove is formed in the back end of the large worm gear, a locking disc capable of driving the large worm gear to rotate synchronously is arranged in the connecting groove, and a middle connecting shaft of the locking disc penetrates a large worm gear inner hole and the chain wheel cover plate to be positioned on the chain wheel cover plate through a check ring. By means of the designed tool-free adjusting structure for the chain saw chain tensity, the overall adjusting process can be achieved without helps of other tools; and the tool-free adjusting structure has the beneficial effects of being easy to operate, convenient to use and high in adjusting efficiency.
Description
Technical field
The present invention relates to a kind of chain saw chain, specifically a kind of instrument of exempting from regulation structure of chain saw chain tension.
Background technique
In the middle of the use of chain saw, because of sawtooth can along with use fever expansion, it is lax that this causes the chain for locating sawtooth to produce, and for this reason, generally in use for some time, all needs to carry out correction adjustment again to the rate of tension of chain.
And at present, the regulation structure of chain tension as shown in Figure 1, it mainly comprises adjusting screw 1 and moving block 2, wherein adjusting screw 1 afterbody is provided with straight groove 11, adjusting screw 1 head is threaded with moving block 2, and moving block 2 and the carrier bar of location chain are fixed together, when needs regulate, adjusting screw 1 need be rotated by straight screwdriver or special tool, and drive moving block 2 to move by the rotation of adjusting screw 1, and then to drive and the carrier bar that is fixed together of moving block 2 moves, realize the adjustment of chain tension.At this, because whole adjustment process needs other instruments for public use to carry out, not only troublesome poeration, also brings very large inconvenience to use.
Summary of the invention
For the problems referred to above, the present invention devises a kind of instrument of exempting from regulation structure of chain saw chain tension, and its whole adjustment process can not be carried out by other instruments, has simple to operate, easy to use, that adjustment efficiency is high feature.
For achieving the above object, the present invention by the following technical solutions
A kind of instrument of exempting from regulation structure of chain saw chain tension, comprise a moving block be fixed together with the carrier bar of location chain, it is characterized in that: described moving block is connected with the threaded one end of a screw mandrel, the other end of screw mandrel is provided with a small gear, and the assemblying body of described small gear, screw mandrel and moving block relies on a small gear lid to be fixed on the side of sprocket wheel cover plate; Described small gear and one is located the large worm gear be arranged on sprocket wheel cover plate opposite side and is connected with a joggle, large worm gear rear end is provided with a connecting groove, be provided with the locking plate that can drive large worm gear synchronous axial system in connecting groove, the middle part coupling shaft of locking plate is located on sprocket wheel cover plate by a back-up ring through after large worm gear endoporus and sprocket wheel cover plate.
Further, above-mentioned locking plate rear portion is provided with an adjustment augmentor, this adjustment augmentor comprises the chute be arranged on locking plate rear end, one T-shaped piece is arranged by screw in described chute, the both sides of T-shaped piece are provided with highly ever-increasing snap fit tabs, and on T-shaped piece, be equipped with an extension lever, the bottom of extension lever is provided with inward flange and is connected together with the both sides snap fit tabs of T-shaped piece, whole extension lever can relatively T-shaped piece slide outward along chute.
Further, the end face of above-mentioned extension lever is provided with some be convenient to point put forth effort by groove.
Further, above-mentioned large worm gear is provided with anti-loosening device, this anti-loosening device comprises retaining pawl, Returnning spring and is arranged on the single syncline ratchet on outside large worm gear; Described retaining pawl and Returnning spring are positioned in the guide groove on sprocket wheel cover plate by retaining pawl lid, wherein Returnning spring is positioned at the bottom of guide groove, upper end and the retaining pawl of Returnning spring offset, and the head of retaining pawl stretches out guide groove and offsets with the oblique ratchet on large worm gear and engages.
Further, the side of above-mentioned retaining pawl is provided with push button, and this push button stretches out from the handle hole retaining pawl lid capping.
In use, user can directly rotate adjustment locking plate with hand, and then drive large worm gear synchronous axial system, and by the engagement driving of large worm gear and small gear, small gear is rotated, and the rotation of small gear will drive screw mandrel synchronous axial system, and realized the movement of moving block with being threaded of moving block by screw mandrel, and power is passed to the synchronizing moving that carrier bar realizes carrier bar by moving block, the degree of tightness between carrier bar and chain (carrier bar and chain are fixed length and are support the use) can be controlled when carrier bar moves forward and backward, thus realize just can reaching without the need to carrying implement the elasticity regulated between carrier bar and chain.
At this, for better chain adjustment rate of tension can be obtained, described locking plate rear portion is provided with an adjustment augmentor, when user uses, extension lever can be skidded off locking plate along chute, and be used as the Point of Strength of rotation lock dish with this, this extension lever stretched out effectively can strengthen the rotation arm of force of locking plate, be convenient to user's force, improve locking strong degree.And complete when regulating, extension lever is return in the chute of locking plate, space can be saved, and the vibration produced when not easily being worked is to shaking out.
In addition, after elasticity has regulated, for ensureing that carrier bar and chain loosen again, described large worm gear is provided with anti-loosening device, because the oblique ratchet on large worm gear is against clockwise oblique setting, therefore when the large worm gear that turns clockwise tightens carrier bar and chain, user is rotatable, and when being rotated counterclockwise, retaining pawl will block large worm gear wheel, so just can play the effect preventing carrier bar and chain-loose.And when user wants to adjust loose carrier bar and chain, only need retaining pawl to retrain toward the engaging of extrapolated releasing to ratchet oblique on large worm gear, be now rotated counterclockwise large worm gear and adjustable loose carrier bar and chain.At this, because retaining pawl rear portion is provided with Returnning spring, make retaining grippers for auto-reset function, when hand unclamps, retaining pawl can eject and again blocks oblique ratchet on large worm gear and realize loosening dynamic limitation function.
To sum up, the whole adjustment operation of the present invention, without the need to by other or special tool, achieves instrument of exempting from and regulates, can rotate large worm gear by direct hand, simple to operate, very easy to use.
Accompanying drawing explanation
The stereochemical structure decomposing schematic representation of Fig. 1, existing rate of tension controlling device.
Fig. 2, stereochemical structure decomposing schematic representation of the present invention;
The stereochemical structure decomposing schematic representation at Fig. 3, another visual angle of the present invention;
The perspective view of Fig. 4, the large worm gear of the present invention.
Embodiment
As in Figure 2-4, a kind of instrument of exempting from regulation structure of chain saw chain tension, comprise a moving block 1 be fixed together with the carrier bar of location chain, described moving block 1 is connected with the threaded one end of a screw mandrel 2, the other end of screw mandrel 2 is provided with a small gear 3, and the assemblying body of described small gear 3, screw mandrel 2 and moving block 1 relies on a small gear lid 31 to be fixed on the side of sprocket wheel cover plate 4.
Described small gear 3 and a worm-gear tooth 51 of locating the large worm gear 5 be arranged on sprocket wheel cover plate 4 opposite side are connected with a joggle, large worm gear 5 rear end is provided with a connecting groove 52, be provided with the locking plate 6 that can drive large worm gear 5 synchronous axial system in connecting groove 52, the middle part coupling shaft 61 of locking plate 6 is located on sprocket wheel cover plate 4 by a back-up ring 611 through after large worm gear 5 endoporus and sprocket wheel cover plate 4.
In use, user directly can rotate with hand and regulate locking plate 6, and then drive large worm gear 5 synchronous axial system, and by the engagement driving of large worm gear 5 and small gear 3, small gear 3 is rotated, and the rotation of small gear 3 will drive screw mandrel 2 synchronous axial system, and realized the movement of moving block 1 with being threaded of moving block 1 by screw mandrel 2, and power is passed to the synchronizing moving that carrier bar realizes carrier bar by moving block 1, the degree of tightness between carrier bar and chain (carrier bar and chain are fixed length and are support the use) can be controlled when carrier bar moves forward and backward, thus realize just can reaching without the need to carrying implement the elasticity regulated between carrier bar and chain.
At this, for better chain adjustment rate of tension can be obtained, described locking plate 6 rear portion is provided with an adjustment augmentor, this adjustment augmentor comprises the chute 71 be arranged on locking plate 6 rear end, one T-shaped piece 73 is arranged by screw 72 in described chute 71, the both sides of T-shaped piece 73 are provided with highly ever-increasing snap fit tabs 731, and on T-shaped piece 731, be equipped with an extension lever 74, the bottom of extension lever 74 is provided with inward flange 741 and is connected together with the both sides snap fit tabs 731 of T-shaped piece 73, whole extension lever 74 can slide along chute 71 for relatively T-shaped piece 73 outward, and be provided with on the end face of extension lever 74 some be convenient to point put forth effort by groove 742.
When user uses, extension lever 74 can be skidded off locking plate 6 along chute 71, and be used as the Point of Strength of rotation lock dish 6 with this, the extension lever 74 that this stretches out effectively can strengthen the rotation arm of force of locking plate 6, is convenient to user's force, improves locking strong degree.And complete when regulating, extension lever 74 is return in the chute 71 of locking plate 6, space can be saved, and the vibration produced when not easily being worked is to shaking out.
In addition, after elasticity has regulated, for ensureing that carrier bar and chain loosen again, described large worm gear 5 is provided with anti-loosening device, in the present embodiment, this anti-loosening device comprises retaining pawl 81, Returnning spring 82 and is arranged on the single syncline ratchet 83 on outside large worm gear 5.Described retaining pawl 81 and Returnning spring 82 are positioned in the guide groove 41 on sprocket wheel cover plate 4 by retaining pawl lid 84, wherein Returnning spring 82 is positioned at the bottom of guide groove 41, upper end and the retaining pawl 81 of Returnning spring 82 offset, and the head of retaining pawl 81 stretches out guide groove 41 and offsets with the oblique ratchet 83 on large worm gear 5 and engages.The side of described retaining pawl 81 is provided with push button 811, and this push button 811 stretches out from the handle hole 841 retaining pawl lid 84 capping.
In above structure, because the oblique ratchet 83 on large worm gear 5 is counterclockwise oblique settings, therefore when the large worm gear 5 that turns clockwise tightens carrier bar and chain, user is rotatable, and when being rotated counterclockwise, retaining pawl 81 will block large worm gear 5 and rotate, and so just can play the effect preventing carrier bar and chain-loose.And when user wants to adjust loose carrier bar and chain, only need to pin push button 811 and retaining pawl 81 is retrained toward the engaging of extrapolated releasing to ratchet 83 oblique on large worm gear 5, be now rotated counterclockwise large worm gear 5 i.e. adjustable loose carrier bar and chain.At this, because retaining pawl 81 rear portion is provided with Returnning spring 82, make retaining pawl 81 possess auto-reset function, when hand unclamps, retaining pawl 81 can eject and again blocks oblique ratchet 83 on large worm gear 5 and realize loosening dynamic limitation function.
In sum, the whole adjustment operation of the present invention, without the need to by other or special tool, achieves instrument of exempting from and regulates, can rotate large worm gear and retaining pawl by direct hand, simple to operate, very easy to use.
The above is only better embodiment of the present invention, every above principle is done according to know-why of the present invention any simple modification, equivalent variations or modification, still belong in the scope of technical solution of the present invention.
Claims (5)
1. instrument of the exempting from regulation structure of a chain saw chain tension, comprise a moving block be fixed together with the carrier bar of location chain, it is characterized in that: described moving block is connected with the threaded one end of a screw mandrel, the other end of screw mandrel is provided with a small gear, and the assemblying body of described small gear, screw mandrel and moving block relies on a small gear lid to be fixed on the side of sprocket wheel cover plate; Described small gear and one is located the large worm gear be arranged on sprocket wheel cover plate opposite side and is connected with a joggle, large worm gear rear end is provided with a connecting groove, be provided with the locking plate that can drive large worm gear synchronous axial system in connecting groove, the middle part coupling shaft of locking plate is located on sprocket wheel cover plate by a back-up ring through after large worm gear endoporus and sprocket wheel cover plate.
2. exempt from instrument regulation structure as claimed in claim 1, it is characterized in that: described locking plate rear portion is provided with an adjustment augmentor, this adjustment augmentor comprises the chute be arranged on locking plate rear end, one T-shaped piece is arranged by screw in described chute, the both sides of T-shaped piece are provided with highly ever-increasing snap fit tabs, and an extension lever is equipped with on T-shaped piece, the bottom of extension lever is provided with inward flange and is connected together with the both sides snap fit tabs of T-shaped piece, whole extension lever can relatively T-shaped piece slide outward along chute.
3. exempt from instrument regulation structure as claimed in claim 2, it is characterized in that: the end face of described extension lever is provided with some be convenient to point put forth effort by groove.
4. instrument of the exempting from regulation structure as described in right as arbitrary in claim 1-3, is characterized in that: described large worm gear is provided with anti-loosening device, and this anti-loosening device comprises retaining pawl, Returnning spring and is arranged on the single syncline ratchet on outside large worm gear; Described retaining pawl and Returnning spring are positioned in the guide groove on sprocket wheel cover plate by retaining pawl lid, wherein Returnning spring is positioned at the bottom of guide groove, upper end and the retaining pawl of Returnning spring offset, and the head of retaining pawl stretches out guide groove and offsets with the oblique ratchet on large worm gear and engages.
5. exempt from instrument regulation structure as claimed in claim 4, it is characterized in that: the side of described retaining pawl is provided with push button, this push button stretches out from the handle hole retaining pawl lid capping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410470.XA CN105134894B (en) | 2015-07-14 | 2015-07-14 | The tool-free adjustment structure of chain saw chain tension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410470.XA CN105134894B (en) | 2015-07-14 | 2015-07-14 | The tool-free adjustment structure of chain saw chain tension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105134894A true CN105134894A (en) | 2015-12-09 |
| CN105134894B CN105134894B (en) | 2018-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510410470.XA Active CN105134894B (en) | 2015-07-14 | 2015-07-14 | The tool-free adjustment structure of chain saw chain tension |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3954513A1 (en) * | 2019-10-18 | 2022-02-16 | Globe (Jiangsu) Co., Ltd. | Chain saw |
| EP4180194A1 (en) * | 2021-11-10 | 2023-05-17 | Techtronic Cordless GP | Chainsaw and method of tensioning a guide bar of a chain saw |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023057331A (en) * | 2021-10-11 | 2023-04-21 | 株式会社やまびこ | Chain saw |
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| CN204149262U (en) * | 2014-08-26 | 2015-02-11 | 胡叶芽 | A kind of swelling device of chain saw chain |
| CN204755795U (en) * | 2015-07-14 | 2015-11-11 | 浙江格林雅动力科技有限公司 | Structure is adjusted to instrument of exempting from of chain saw chain rate of tension |
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| CN200991925Y (en) * | 2006-10-19 | 2007-12-19 | 钟李杏枝 | Tool-free adjusting structure of chain saw |
| CN101549419A (en) * | 2008-04-01 | 2009-10-07 | 创科实业有限公司 | Toolless apparatus for guide bar for chain saw |
| CN201427336Y (en) * | 2009-04-17 | 2010-03-24 | 昆山格瑞得利工具有限公司 | Quick-change mechanism of gasoline chain saw |
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| WO2013136724A1 (en) * | 2012-03-14 | 2013-09-19 | Hitachi Koki Co., Ltd. | Chain saw with saw chain tensioning device |
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| CN204149262U (en) * | 2014-08-26 | 2015-02-11 | 胡叶芽 | A kind of swelling device of chain saw chain |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3954513A1 (en) * | 2019-10-18 | 2022-02-16 | Globe (Jiangsu) Co., Ltd. | Chain saw |
| US11524423B2 (en) | 2019-10-18 | 2022-12-13 | Globe (Jiangsu) Co., Ltd | Chain saw |
| EP4180194A1 (en) * | 2021-11-10 | 2023-05-17 | Techtronic Cordless GP | Chainsaw and method of tensioning a guide bar of a chain saw |
| US11673287B2 (en) | 2021-11-10 | 2023-06-13 | Techtronic Cordless Gp | Systems and methods of chainsaw tensioning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105134894B (en) | 2018-05-18 |
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Address after: 318000 No. 1155, Haifeng Road, Binhai Industrial Zone, Taizhou Economic Development Zone, Taizhou City, Zhejiang Province Patentee after: Zhejiang greenya Technology Co.,Ltd. Address before: 318000 No. 1155, Haifeng Road, Binhai Industrial Zone, Taizhou Economic Development Zone, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG GREEN YARD POWER MACHINERY TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20220422 Address after: No.1500 Haichang road Taizhou Zhejiang 318000 Patentee after: HENGBO HOLDINGS Co.,Ltd. Address before: 318000 No. 1155, Haifeng Road, Binhai Industrial Zone, Taizhou Economic Development Zone, Taizhou City, Zhejiang Province Patentee before: Zhejiang greenya Technology Co.,Ltd. |
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