CN203171067U - Electric chain saw chain tightness adjusting device - Google Patents
Electric chain saw chain tightness adjusting device Download PDFInfo
- Publication number
- CN203171067U CN203171067U CN 201320061359 CN201320061359U CN203171067U CN 203171067 U CN203171067 U CN 203171067U CN 201320061359 CN201320061359 CN 201320061359 CN 201320061359 U CN201320061359 U CN 201320061359U CN 203171067 U CN203171067 U CN 203171067U
- Authority
- CN
- China
- Prior art keywords
- chain
- frame
- carrier bar
- worm
- worm gear
- 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 discloses an electric chain saw chain tightness adjusting device which comprises a machine frame, a chain wheel, a chain plate and a chain. The chain wheel is connected to the machine frame in a rotating mode, the chain plate is arranged on the machine frame, the chain is arranged on the chain plate and driven by the chain wheel, the chain plate is provided with an adjusting device which is used for adjusting the relative distance between the chain plate and the chain wheel to enable the chain to loosen or tension, and the adjusting device comprises a worm and gear device used for driving the chain plate to move and a limiting device enabling the chain plate to move back and forth relative to th machine frame. The electric chain saw chain tightness adjusting device can conveniently adjust tightness of the chain, operability is enhanced, and potential safety hazards are effectively avoided.
Description
Technical field
The utility model relates to electric chain saw chain slack adjuster.
Background technology
Electric chain saw is a kind of relatively more dangerous instrument, general user is will be through training, take place even so also have security incident, wherein, happen occasionally especially because electric chain saw in use is subjected to the injury accident that violent vibrations cause chain to become flexible even the disengaging carrier bar causes.In addition, along with development of times, the application of electric chain saw is also more and more wider, and the crowd of use is also more and more, and this security and operability to the chain saw design is had higher requirement.
Summary of the invention
Problem to be solved in the utility model provides electric chain saw chain slack adjuster, can regulate the degree of tightness of chain expediently, strengthens operability, effectively avoids potential safety hazard.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: electric chain saw chain slack adjuster, comprise frame, sprocket wheel, carrier bar and chain, described sprocket wheel switching is on frame, described carrier bar is located on the frame, described chain is located on the carrier bar and by sprocket wheel and drives, described carrier bar is provided with the distance of regulating the relative sprocket wheel of carrier bar unclamps chain or the adjusting device of tensioning, and described adjusting device comprises and drives carrier bar the worm and gear device that moves and the stopping means that the relative frame of carrier bar is moved forward and backward.The operator that is arranged so that of electric chain saw adjusted device can adjust the degree of tightness of chain before use, guarantees the operability of electric chain saw, and is extremely convenient.
Improved, described worm and gear device comprises worm gear, worm screw and adjusting nut, described worm gear is located on the frame, described worm screw is located on the frame and end and worm gear external toothing along the frame fore-and-aft direction, described adjusting nut is located on the worm screw and is fixed on the carrier bar, the rotation of described worm gear drives worm screw, worm screw rotation drive adjusting nut relative to frame move forward and backward, adjusting nut moves and drives the relative frame of carrier bar and move forward and backward and chain is unclamped or tensioning.Relative motion by worm screw and adjusting nut realizes the adjusting of chain degree of tightness, and worm screw is by worm-gear driven.
Improved, also comprise the spanner of pulling the worm gear rotation, the center of described worm gear is provided with axis body, and described axis body end is provided with the groove that cooperates with the spanner end.Spanner injects and pulls the worm gear rotation in the groove.
Improved, described worm and gear device is connected on the frame by support, and described worm gear and worm screw are all transferred on support.By support worm and gear is connected on the frame, and worm and gear can be realized rotation.
Improved, described carrier bar is provided with the bar shaped groove that arranges along the frame fore-and-aft direction, described stopping means comprises positioning screw and the bar shaped limited block that is located at band setscrew nut in the bar shaped groove, described positioning screw and bar shaped limited block all are fixed on the frame, described carrier bar is connected on the frame by positioning screw and setscrew nut, carrier bar locking when setscrew nut is tightened, carrier bar can relative frame move forward and backward when setscrew nut is loosening.Under the electric chain saw duty, setscrew nut locking makes the relative frame of carrier bar fix, when electric chain saw will be regulated the degree of tightness of chain, loosening setscrew nut makes carrier bar relative frame to move forward and backward, regulate the degree of tightness adjusting that the displacement of carrier bar on the frame fore-and-aft direction realizes chain this moment, regulate the back screwed in place nut that finishes.
Improved, also comprise the cover with the adjusting device sealing.Avoid in the practical process of electric chain saw smear metal to enter the gear adjusting device and influence its operate as normal.
Improved, the position corresponding with worm gear is provided with first through hole on the described cover, and described axis body passes first through hole makes the operator to pull the worm gear rotation in the end insertion groove with spanner.Pull the worm gear rotation in the end insertion groove of operator with spanner and just can carry out the degree of tightness adjusting to chain.
Improved, position corresponding with positioning screw on the described cover is provided with groove, described cover is installed in that the diapire of rearward recess is against on the carrier bar on the frame, described groove diapire is provided with second through hole, described positioning screw passes second through hole, and described setscrew nut is located at positioning screw and passes on the part of second through hole.Setscrew nut is located at cover outer, needn't dismantles cover and just can operate setscrew nut, and the setting of groove is convenient to the operator and setscrew nut is operated is not subjected to limited space.
Beneficial effect:
After adopting technique scheme, the degree of tightness that this utility model electric chain saw chain slack adjuster can be regulated chain expediently strengthens operability, effectively avoids potential safety hazard.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described further:
Fig. 1 is explosive view of the present utility model;
Fig. 2 is the structural representation of a kind of electric chain saw chain of the utility model slack adjuster;
Fig. 3 is a kind of structural representation of electric chain saw.
The specific embodiment
As shown in Figure 1 to Figure 3, electric chain saw chain slack adjuster, comprise frame 1, sprocket wheel 2, carrier bar 3 and chain 4, described sprocket wheel switching is on frame, described carrier bar is located on the frame, described chain is located on the carrier bar and is driven by sprocket wheel, and described carrier bar is provided with the distance of regulating the relative sprocket wheel of carrier bar unclamps chain or the adjusting device of tensioning, and described adjusting device comprises and drives carrier bar the worm and gear device that moves and the stopping means that the relative frame of carrier bar is moved forward and backward.
Described worm and gear device comprises worm gear 51, worm screw 52 and adjusting nut 53, described worm gear is located on the frame, described worm screw is located on the frame and end and worm gear external toothing along the frame fore-and-aft direction, described adjusting nut is located on the worm screw and is fixed on the carrier bar, described worm gear drives worm screw rotation, the worm screw rotation drives the relative frame of adjusting nut and moves forward and backward, adjusting nut moves and drives the relative frame of carrier bar and move forward and backward and chain is unclamped or tensioning, also comprise the spanner 6 of pulling the worm gear rotation, the center of described worm gear is provided with axis body 511, described axis body end is provided with the groove 512 that cooperates with the spanner end, described worm and gear device is connected on the frame by support 11, and described worm gear and worm screw are all transferred on support.
Described carrier bar is provided with the bar shaped groove 31 that arranges along the frame fore-and-aft direction, described stopping means comprises positioning screw 71 and the bar shaped limited block 72 that is located at band setscrew nut 73 in the bar shaped groove, described positioning screw and bar shaped limited block all are fixed on the frame, described carrier bar is connected on the frame by positioning screw and setscrew nut, carrier bar locking when setscrew nut is locked, carrier bar can relative frame move forward and backward when setscrew nut is loosening.
Also comprise the cover 12 with the adjusting device sealing, the position corresponding with worm gear is provided with first through hole 13 on the described cover, described axis body passes first through hole makes the operator to pull the worm gear rotation in the end insertion groove with spanner, the position corresponding with positioning screw is provided with groove 14 on the described cover, described cover is installed in that the diapire of rearward recess is against on the carrier bar on the frame, described groove diapire is provided with second through hole 15, described positioning screw passes second through hole, and described setscrew nut is located at positioning screw and passes on the part of second through hole.
In the actual mechanical process, earlier setscrew nut is unscrewed, make carrier bar relative frame to move forward and backward, then the end of spanner is inserted in the groove of worm gear axis body, pull spanner and make the worm gear rotation, the worm gear rotation drives the worm screw rotation, and the worm screw rotation drives the relative frame of adjusting nut and moves forward and backward, adjusting nut moves the relative frame of drive carrier bar and moves forward and backward, thereby the degree of tightness that has realized chain is regulated.
Except above preferred embodiment, the utility model also has other embodiment, those skilled in the art can make various changes and distortion according to the utility model, only otherwise break away from spirit of the present utility model, all should belong to the defined scope of the utility model claims.
Claims (8)
1. electric chain saw chain slack adjuster, comprise frame (1), sprocket wheel (2), carrier bar (3) and chain (4), described sprocket wheel switching is on frame, described carrier bar is located on the frame, described chain is located on the carrier bar and by sprocket wheel and drives, it is characterized in that: described carrier bar is provided with the distance of regulating the relative sprocket wheel of carrier bar unclamps chain or the adjusting device of tensioning, and described adjusting device comprises and drives carrier bar the worm and gear device that moves and the stopping means that the relative frame of carrier bar is moved forward and backward.
2. electric chain saw chain slack adjuster according to claim 1, it is characterized in that: described worm and gear device comprises worm gear (51), worm screw (52) and adjusting nut (53), described worm gear is located on the frame, described worm screw is located on the frame and end and worm gear external toothing along the frame fore-and-aft direction, described adjusting nut is located on the worm screw and is fixed on the carrier bar, the rotation of described worm gear drive worm screw rotation, worm screw rotation drive adjusting nut relative to frame move forward and backward, adjusting nut moves and drives the relative frame of carrier bar and move forward and backward and chain is unclamped or tensioning.
3. electric chain saw chain slack adjuster according to claim 2, it is characterized in that: also comprise the spanner (6) of pulling the worm gear rotation, the center of described worm gear is provided with axis body (511), and described axis body end is provided with the groove (512) that cooperates with the spanner end.
4. electric chain saw chain slack adjuster according to claim 3, it is characterized in that: described worm and gear device is connected on the frame by support (11), and described worm gear and worm screw are all transferred on support.
5. according to claim 3 or 4 described electric chain saw chain slack adjusters, it is characterized in that: described carrier bar is provided with the bar shaped groove (31) that arranges along the frame fore-and-aft direction, described stopping means comprises positioning screw (71) and the bar shaped limited block (72) that is located in the bar shaped groove with setscrew nut (73), described positioning screw and bar shaped limited block all are fixed on the frame, described carrier bar is connected on the frame by positioning screw and setscrew nut, carrier bar locking when setscrew nut is locked, carrier bar can relative frame move forward and backward when setscrew nut is loosening.
6. electric chain saw chain slack adjuster according to claim 5 is characterized in that: also comprise the cover (12) with the adjusting device sealing.
7. electric chain saw chain slack adjuster according to claim 6, it is characterized in that: the position corresponding with worm gear is provided with first through hole (13) on the described cover, and described axis body passes first through hole makes the operator to pull the worm gear rotation in the end insertion groove with spanner.
8. electric chain saw chain slack adjuster according to claim 7, it is characterized in that: the position corresponding with positioning screw is provided with groove (14) on the described cover, described cover is installed in that the diapire of rearward recess is against on the carrier bar on the frame, described groove diapire is provided with second through hole (15), described positioning screw passes second through hole, and described setscrew nut is located at positioning screw and passes on the part of second through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320061359 CN203171067U (en) | 2013-01-30 | 2013-01-30 | Electric chain saw chain tightness adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320061359 CN203171067U (en) | 2013-01-30 | 2013-01-30 | Electric chain saw chain tightness adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203171067U true CN203171067U (en) | 2013-09-04 |
Family
ID=49067820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320061359 Expired - Fee Related CN203171067U (en) | 2013-01-30 | 2013-01-30 | Electric chain saw chain tightness adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203171067U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121130A (en) * | 2013-01-30 | 2013-05-29 | 浙江亚特电器有限公司 | Electric chain saw chain elasticity adjusting device |
| CN106466736B (en) * | 2015-08-14 | 2019-01-04 | 南京德朔实业有限公司 | Power tool |
-
2013
- 2013-01-30 CN CN 201320061359 patent/CN203171067U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121130A (en) * | 2013-01-30 | 2013-05-29 | 浙江亚特电器有限公司 | Electric chain saw chain elasticity adjusting device |
| CN103121130B (en) * | 2013-01-30 | 2016-01-20 | 浙江亚特电器有限公司 | Electric chain saw chain slack adjuster |
| CN106466736B (en) * | 2015-08-14 | 2019-01-04 | 南京德朔实业有限公司 | Power tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20160130 |
|
| EXPY | Termination of patent right or utility model |