CN2871082Y - Mechanical chain saw - Google Patents
Mechanical chain saw Download PDFInfo
- Publication number
- CN2871082Y CN2871082Y CN 200620068282 CN200620068282U CN2871082Y CN 2871082 Y CN2871082 Y CN 2871082Y CN 200620068282 CN200620068282 CN 200620068282 CN 200620068282 U CN200620068282 U CN 200620068282U CN 2871082 Y CN2871082 Y CN 2871082Y
- Authority
- CN
- China
- Prior art keywords
- knob
- chain saw
- gear
- housing
- cam
- 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 mechanical chain saw, particularly relates to tensioner of chain saw which includes a knob to close contact internal thread, an armillary male tab is on one side of the knob, a disk is invaginated internal thread and goes around it, one side of the disk is gear and the other side is close connected with a cam, radial hock and inner gear on hull are on outer circle of disk, one rack go through the knob to mesh with gear without relative rotating, knob drives cam to push ejector plate to tense chain saw through jogged and separable gear and rack, armillary male tab packs the hock tightly on radial to make cam to be locked without relative rotating in respect of hull, solve the problem of using special tool to adjust existing chain saw, and the shortcomings of complicated structures and the easily loosing tensioner.
Description
Technical field
The utility model relates to a kind of mechanical chain saw, especially relates to the chain tension adjusters of chain saw.
Background technology
The saw chain of chain saw is owing to reasons such as use and temperature risings, the phenomenon that occurs elongation easily need be readjusted tensioning saw chain and locking again, and existing a large amount of chain saw tensioning device has adopted the screw screw-rod structure more, by rotary screw screw is moved, drive carrier bar tensioning saw chain.This mechanism needs special-purpose adjustment means adjustment, and operation is very inconvenient, also has serious unsafe factor simultaneously, is exactly that this class tensioning apparatus can occur becoming flexible because of the chain saw vibration, has increased the danger that saw chain falls from carrier bar.
At present existing a spot of instrument chain saw tensioning device of exempting from, as the patent No. is the tensioning apparatus of ZL01261006.6, promote carrier bar tensioning saw chain by a knob driving cam, another knob drives securing member locking carrier bar, this mechanism exists complex structure, the higher shortcoming of cost, equally also exists tensioning apparatus because of the loosening potential safety hazard of vibration.
Summary of the invention
The purpose of this utility model is to provide a kind of mechanical chain saw, and that this chain saw has is simple in structure, can not overcome the shortcoming that aforementioned known chain saw tensioning device exists because of the loosening instrument of the exempting from tensioning apparatus of vibrations.
The utility model purpose is achieved in that a kind of mechanical chain saw, has housing, sprocket wheel and carrier bar, no good being fixed on the carrier bar, a tensioning apparatus promotes push pedal makes carrier bar move in the vertical to regulate the saw chain tensile force and carrier bar is locked with respect to sprocket wheel, this tensioning apparatus comprises that a knob is fastenedly connected inner thread piece, knob simultaneously also has annular boss, a disk is inserted in inner thread piece and also can rotates around inner thread piece, disk simultaneously has gear, another side and cam are fastenedly connected, there is the internal gear engagement on the radially hock and housing the disk outer ring, and a tooth bar does not have and passes knob and gears engaged with relatively rotating, and knob is by the rack-and-pinion driving cam promotion push pedal tensioning saw chain of engageable separation, annular boss is at the radial compaction hock, makes cam not have with respect to housing that to relatively rotate ground locked.
When regulating saw chain, depress tooth bar, make the gears engaged on tooth bar and the disk, the rotation knob drives cam, promotes push pedal carrier bar is vertically moved, behind feel tensioning saw chain, lift tooth bar, compress carrier bar thereby continuation rotation knob makes inner thread piece compress housing, the radially hock on the annular boss radial compaction cam pack on the knob makes cam pack lock with respect to casing simultaneously, the last gears engaged of depressing once more on tooth bar and the cam pack makes knob assembly lock with respect to housing.
When saw chain is readjusted, lift tooth bar earlier, the rotation knob is removed the carrier bar impaction state, repeats the joint action again and just can readjust suitable chain saw tensioning state.
Compare with prior art, the utility model is simple in structure, reduces cost, and has realized single knob, has exempted from tool operation, and reliable operation has effectively been eliminated the potential safety hazard that causes tensioning apparatus to become flexible because of vibration simultaneously.
Description of drawings
Fig. 1 is a cutaway view of the present utility model.
Fig. 2 is the rearview of the utility model disk.
The specific embodiment
Below in conjunction with accompanying drawing enforcement of the present utility model is further described:
As shown in Figure 1 and Figure 2, a kind of mechanical chain saw, has housing (7), sprocket wheel (4) and the carrier bar of aiming at this sprocket wheel (4) (1), this carrier bar (1) stretches out from housing (7) and is that the saw chain circulation is led, a tensioning apparatus makes carrier bar (1) move in the vertical with respect to housing (7) and sprocket wheel (4), to regulate the saw chain tensile force and carrier bar (1) is locked.This tensioning apparatus comprises one no good (2) be fixed on the carrier bar (1), a knob (19), a cam (8).Inner thread piece (17) is fastenedly connected with knob (19), the internal thread diameter of inner thread piece (17) is identical with the external thread diameter of frame bolt (5), tooth bar (18) inserts in the knob (19) and by screw (22), spring (21), spacer pin (20) and compresses and slippage up and down within the specific limits, also have annular boss (13) below the knob (19), the circumference relative with housing (7) also is equipped with profile of tooth spring leaf (12).
Disk (24) one ends have integrated gear (15), and the other end and cam (8) are fastenedly connected.There is cantilever-shaped hock (9) outer ring, hock (9) with and the incorporate internal gear of housing (10) engagement, and and housing in annular boss offset.Disk (24) is inserted in inner thread piece (17) and can rotates around inner thread piece (17), and cam (8) outer rim goes up vertical push pedal projection (3) with push pedal (2) and offsets.Spring (16) is arranged between gear (15) and the knob, make two separation.
Inner thread piece (17) links together by the built-in fitting (6) on collar (23) and the housing (7), is convenient to install assembling.Below the built-in fitting (6) and push pedal (2) offset.Between inner thread piece (17) and built-in fitting (6), also has packing ring (14).
The end face that contacts with knob (19) at housing (7) also has end face tooth bar (11).
When regulating saw chain, inner thread piece (17) is inserted in frame bolt (5) rotation, the knob that turns clockwise (19) makes rotation axis to pressing down.When profile of tooth spring leaf (12) contacts with end face tooth bar (11) when sending the sound, depress tooth bar (18), make the engagement of tooth bar (18) and gear (15), rotation knob (19) drives cam (8), promotes push pedal (2) carrier bar (1) is vertically moved.Behind feel tensioning saw chain, lift tooth bar (18), gear (15) and tooth bar (1 8) are broken away from, at this moment owing to the effect of cam (8) resistance and hock (9), saw chain can't become flexible.Continuing the rotation knob makes inner thread piece (17) compress built-in fitting (6), push pedal (2), thereby compress carrier bar (1), hock (9) on annular boss (13) the radial compaction disk (24) on the knob (19) and the engagement of the internal gear (10) on the housing simultaneously, cam is locked with respect to casing, depress tooth bar (18) and gear (15) engagement at last once more, knob (19) is also locked with respect to housing (7).
When saw chain is readjusted, lift tooth bar (18) earlier, rotation knob (19) is removed carrier bar (1) impaction state, repeats the joint action again and just can readjust suitable chain saw tensioning state.
This shows, compare that the chain tension adjusters of this chain saw has saved special-purpose adjustment means, and is simple in structure, reduced manufacturing cost, and easy to operate, safe and reliable with prior art.
Claims (7)
1. mechanical chain saw, has housing (7), sprocket wheel (4) and carrier bar (1), one no good (2) are fixed on the carrier bar (1), a tensioning apparatus promotes push pedal (2) makes carrier bar (1) move in the vertical to regulate the saw chain tensile force and carrier bar (1) is locked with respect to sprocket wheel (4), it is characterized in that this tensioning apparatus comprises that a knob (19) is fastenedly connected inner thread piece (17), and annular boss (13) arranged, a disk (24) is inserted in inner thread piece (17) and can rotates around inner thread piece (17), disk (24) one side has gear (15), another side and cam (8) are fastenedly connected, there is internal gear (10) engagement on hock (9) and the housing (7) outer ring, tooth bar (18) nothing is passed knob (17) with relatively rotating and is separated with gear (15) slip engagement, knob (19) promotes push pedal (2) tensioning saw chain by tooth bar (18) gear (15) transmission driving cam (8), annular boss (13) radial compaction hock (9) makes cam (8) not have with respect to housing (7) that to relatively rotate ground locked.
2. mechanical chain saw according to claim 1 is characterized in that having stopper slot on the tooth bar (18), limits its slippage scope by the spacer pin that snaps in stopper slot (20).
3. mechanical chain saw according to claim 1, separate it is characterized in that having elastic component between gear (15) and the knob (19) (16).
4. mechanical chain saw according to claim 1 is characterized in that hock (9) becomes cantilever-shaped, and leans against on the ring-shaped step on the housing.
5. mechanical chain saw according to claim 1 is characterized in that the end face of the relative knob of housing (7) has end face tooth bar (11).
6. mechanical chain saw according to claim 1 is characterized in that knob (19) upward and on the circumference of end face tooth (11) correspondence is equipped with profile of tooth spring leaf (12).
7. mechanical chain saw according to claim 1 is characterized in that inner thread piece (17) is the cylindrical member of an outer smooth, and an end links chain tension adjusters and housing (7) by collar (23), and compressing contact-making surface has packing ring (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620068282 CN2871082Y (en) | 2006-01-09 | 2006-01-09 | Mechanical chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620068282 CN2871082Y (en) | 2006-01-09 | 2006-01-09 | Mechanical chain saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2871082Y true CN2871082Y (en) | 2007-02-21 |
Family
ID=37739431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620068282 Expired - Fee Related CN2871082Y (en) | 2006-01-09 | 2006-01-09 | Mechanical chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2871082Y (en) |
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 |
| CN103429405A (en) * | 2011-03-18 | 2013-12-04 | 胡斯华纳有限公司 | Chainsaw with guide bar clamping and chain tensioning assembly |
| CN106171827A (en) * | 2016-08-26 | 2016-12-07 | 苏州金莱克精密机械有限公司 | The tool-free tension mechanism of chain saw |
-
2006
- 2006-01-09 CN CN 200620068282 patent/CN2871082Y/en not_active Expired - Fee Related
Cited By (5)
| 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 |
| CN103429405A (en) * | 2011-03-18 | 2013-12-04 | 胡斯华纳有限公司 | Chainsaw with guide bar clamping and chain tensioning assembly |
| CN103429405B (en) * | 2011-03-18 | 2016-09-21 | 胡斯华纳有限公司 | Tensioning sub-component and chain saw |
| CN106171827A (en) * | 2016-08-26 | 2016-12-07 | 苏州金莱克精密机械有限公司 | The tool-free tension mechanism of chain saw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |