CN106171827A - The tool-free tension mechanism of chain saw - Google Patents
The tool-free tension mechanism of chain saw Download PDFInfo
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- CN106171827A CN106171827A CN201610736099.0A CN201610736099A CN106171827A CN 106171827 A CN106171827 A CN 106171827A CN 201610736099 A CN201610736099 A CN 201610736099A CN 106171827 A CN106171827 A CN 106171827A
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- chain
- chain saw
- cam
- tensioner
- knob
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Abstract
The invention discloses a kind of tool-free tension mechanism of chain saw, including chain guide and tensioner knob, it is characterized in that, described tensioner knob connects a cam, chain guide described in described actuated by cams moves on chain saw, and described chain saw is additionally provided with the locking knob for described chain guide and cam being fixed on described chain saw.Tool-free tension mechanism can be greatly improved and use the convenience of chain saw and comfort level, and can adjust the tensioner degree of chain at any time, and to improve the cutting efficiency of chain saw, the present invention solves chain saw tension mechanism and adjusts the technical problem of chain tensioner degree inconvenience.
Description
Technical field
The present invention relates to a kind of chain saw, it is more particularly related to a kind of tool-free tension mechanism of chain saw.
Background technology
Chain saw is that a kind of chain utilizing band blade drives chain high-speed rotary to transfer cutting timber or branch by power
Garden instrument.If chain is not by suitable tensioner, mistake pine may jump out of guide plate and cause operator to injure, the chain of tension
High temperature fault may be caused due to chain and the direct excessive friction of guide plate.The most during use, due to the mill of chain
Damaging, the tension force of chain can change, and after using a period of time, the length of chain is gradually increased, and its tensioner degree then can reduce.
At present, existing known chain tensioner method needs with specific purpose tool, direct or indirect adjusting screw rod and fastening
Clamping nut, this structure needs user to carry with, in-convenience in use, and instrument easily loses.
Summary of the invention
It is an object of the invention to solve at least the above, and the advantage that at least will be described later is provided.
It is a still further object of the present invention to provide a kind of tool-free tension mechanism of chain saw, tool-free tension mechanism can be significantly
Raising degree easy to use and comfort level, and the tensioner degree of chain can be adjusted at any time, to improve the cutting efficiency of chain saw, this
Invention solves chain saw tension mechanism and adjusts the technical problem of chain tensioner degree inconvenience.
In order to realize according to object of the present invention and further advantage, it is provided that a kind of tool-free tension mechanism of chain saw,
Including chain guide and tensioner knob, described tensioner knob connects a cam, and described in described actuated by cams, chain guide is at chain saw
Upper movement, described chain saw is additionally provided with the locking knob for described chain guide and cam being fixed on described chain saw.
Preferably, described chain saw is provided with the guide plate liner plate interfixed with chain guide, and described guide plate liner plate is provided with outwards
The chimb protruded out, the outline of described cam is resisted against described chimb.
Preferably, chain saw is provided with and the drive plate of described cam secure fit, and described drive plate drives described cam rotation.
Preferably, described chain saw front end is provided with main bearing, and described main bearing is provided with one protruding, described chain guide and
Guide plate liner plate runs through up and down a chute mated with described projection, and described chute is movably arranged in described projection, described convex
Edge direction is vertical with described chute direction.
Preferably, described chain saw is provided with lid and is located at the guide plate guard shield of described guide plate liner plate upper end, and described guide plate guard shield is with can
The mode shirked is arranged on described main bearing, and described guide plate guard shield is offered a circular hole, and described circular hole inner ring is provided with teeth, institute
State tensioner knob and be movably arranged on described circular hole upper end.
Preferably, described drive plate is provided with torsion spring and ratchet, two torque arm of described torsion spring support described projection with
Between the inner side of described ratchet, the cat's paw of described ratchet engages with described circular hole inner ring teeth even under the thrust of described torsion spring
Connect.
Preferably, described drive plate being offered a fluting, described upper cam surface is protruded and is provided with a jacking block, described jacking block card
It is located in described fluting.
Preferably, described cam, drive plate, circular hole, tensioner knob and described locking knob are axial by a locking cap
Fixing, described locking cap bottom is resisted against described cam and sequentially passes through described cam, drive plate, circular hole and tensioner knob
Axle center and be fixed in described locking knob.
Preferably, when described tensioner knob rotates clockwise, drive described drive plate and cam rotation, described ratchet and institute
Stating teeth sliding contact, described cam promotes described guide plate liner plate to move with tensioner chain；
When described tensioner knob rotates counterclockwise, described tensioner knob drives described drive plate and cam rotation, described spine
Pawl departs from described teeth, to discharge the chain of tensioner；
Wherein, described ratchet engages with described teeth so that described cam cannot actively rotate counterclockwise.
Preferably, being provided with cavity inside described tensioner knob, described locking knob is movably arranged in described cavity.
The present invention at least includes following beneficial effect:
1, tension mechanism is arranged on chain saw body, realizes chain tensioner function by rotating tensioner knob, convenient and reliable,
Tension mechanism is difficult to lose；
2, it is provided with ratchet and torsion spring on tension mechanism, is prevented effectively from chain guide actively retraction and causes chain to get loose.
Part is embodied by the further advantage of the present invention, target and feature by description below, and part also will be by this
Invention research and practice and be understood by the person skilled in the art.
Accompanying drawing explanation
Fig. 1 is the structural representation of chain saw；
Fig. 2 is the mounting structure schematic diagram of chain guide and main bearing；
Fig. 3 is the mounting structure schematic diagram of tension mechanism；
Fig. 4 is the perspective view of tension mechanism；
Fig. 5 is tensioner knob internal structure schematic diagram；
Fig. 6 is tension mechanism explosive view；
Fig. 7 is tensioner knob polycrystalline substance schematic diagram；
Fig. 8 is tension mechanism internal structure schematic diagram；
Fig. 9 is the structural representation of drive plate；
Figure 10 is the structural representation of cam.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to description literary composition
Word can be implemented according to this.
As Figure 1-10 shows, in a kind of embodiment, the present invention provides a kind of tool-free tension mechanism of chain saw, including: mutually
Tensioner knob 2 and lid that fixing chain guide 11 and guide plate liner plate 9 are in transmission connection with described guide plate liner plate 9 are located at described
Guide plate guard shield 3 outside guide plate liner plate 9, described guide plate guard shield 3 is removably mounted on described chain saw, chain guide
11 be mutually locked with guide plate liner plate 9 together with, described chain saw front end is provided with one for installing chain saw tension mechanism and chain
The main bearing 12 of bar guide plate 11, described main bearing 12 is provided with a strip projection 121, extends one on described protruding 121
Clamping screw 10, described chain guide 11 and guide plate liner plate 9 are provided with and run through the chute 111 coordinated, described cunning with described protruding 121
Groove 111 is movably set on described protruding 121, and it is outwardly that described clamping screw 10 runs through described chute 111, and described tensioner is revolved
Button 2 connects a cam 7, rotates tensioner knob and i.e. drives described cam 7 to rotate simultaneously, and then described cam 7 drives described guide plate
Liner plate 9 and chain guide 11 displacement on chain saw, namely chute 111 moves along the bearing of trend of projection 121, chain saw
In use there will be chain to fluff phenomenon, at this time, it may be necessary in time chain guide 11 is displaced outwardly along protruding 121,
With by chain tensioner, it is to avoid chain gets loose and affects normal use, by rotating tensioner knob 2, cam 7 is driven to rotate, and then
Related for guide plate liner plate 9 chain guide 11 is pushed out along protruding 121, with tensioner chain.
Described tension mechanism specifically includes: guide plate guard shield 3, and it is to be detachably arranged on described main bearing 12, described
Offer a circular hole on guide plate guard shield 3, described circular hole inner ring is covered with and is provided with teeth 31；
Tensioner knob 2, it is movably arranged on described circular hole upper end, it is possible to rotate freely, and described tensioner knob 2 is internal to be set
There is cavity, being movably equipped with one for tension mechanism being locked in the locking knob 1 of described chain guide upper end in described cavity, lock
Tightly knob 1 is freely rotatable is arranged in described cavity；
Drive plate 6, its rotation is arranged in described circular hole, and described drive plate upper surface is protruded and is provided with a pair first bearing pins
61, a pair second bearing pins 62 and a pair projection 63, as it is shown in figure 9, the first bearing pin 61 described in a pair, the second bearing pin described in a pair
62 and a pair described in projection 63 be symmetrically arranged at both sides, described drive plate 6 center of circle, described projection 63 is arranged close in institute
State the inner side of the first bearing pin 61, described first bearing pin 61 is arranged with a torsion spring 4 and ratchet 5 respectively, two of described torsion spring
Torque arm is supported respectively between described projection 63 and the medial wall of described ratchet 5 so that described ratchet 5 is in the thrust of described torsion spring
Engage with described teeth 31 down.Also extending through on described drive plate 6 and offer a fluting 64, described cam 7 upper surface protrudes and is provided with one
Jacking block 71, described jacking block 71 makes drive plate 6 be rotated by described cam 7 at described fluting 64, rotates tensioner knob 2
Rotating cam 7, described guide plate liner plate 9 surface is protruded and is provided with a chimb 91, and preferred chimb is arranged on the front end of chute 111, institute
The outer surface stating cam 7 is supported in the inner side of described chimb, rotates tensioner knob i.e. rotatable cam, and then promotes guide plate liner plate
9。
Wherein, described cam 7, drive plate 6, tensioner knob 2 and described locking knob are axially solid by a locking cap 8
Fixed, described locking cap 8 bottom is provided with packing ring 81 to support below described cam 4 and to sequentially pass through described convex from the bottom up
Wheel 7, drive plate 6, circular hole and tensioner knob 2 are also fixed on described locking knob 2 center, and locking cap 8 is supported residence and stated cam
7, locking knob 1 is supported residence in the cavity of tensioner knob 2 and is stated tensioner knob 2, so that the rotation of described locking knob 1, tensioner
Button 2, guide plate guard shield 3, drive plate 6, cam 7 form the tension mechanism of integral type, lock nut 8 and locking knob 1 synchronous axial system,
Being provided with female thread in described locking cap 8, described clamping screw 10 is provided with external screw thread, and described locking cap 8 is set in described locking
On bolt 10, by rotational lock knob, tension mechanism is locked on chain guide 11 so that chain guide 11 is locked at master
On bearing.
The tensioner regulation process of concrete chain is as follows:
In a kind of embodiment, because the outer surface of cam is arcuate structure, cam is also eccentric, when described tensioner is revolved
When button rotates clockwise, described rocking arm promotes described second bearing pin to synchronize to rotate clockwise with the described drive plate of drive and cam,
Described ratchet and described teeth sliding contact, form relative motion, and drive plate rotates relative to guide plate guard shield, the outer surface of cam
Orbital radius is gradually increased, and described cam outer face promotes described guide plate liner plate to be displaced outwardly with tensioner chain；
When described tensioner knob rotates counterclockwise, described rocking arm is stirred described ratchet and is rotated counterclockwise around described first bearing pin
And driving described drive plate and cam rotation, described ratchet to depart from described teeth, drive plate freely rotates counterclockwise, cam
Outer surface sweep radius is gradually reduced, and described cam departs to discharge the chain of tensioner with the chimb of described guide plate liner plate；
Wherein, when chain degree of tightness is mediated by needs, it is necessary to rotational lock knob counterclockwise, the chain of release locking
Guide plate, the most just can carry out the regulation of chain tensioner function, when, after chain guide tensioner, turn clockwise locking knob, to incite somebody to action
Chain guide is from being newly locked in main bearing.Further, during normal condition, described ratchet under the promotion of described torsion spring with described tooth
Tooth engages so that described cam cannot actively rotate counterclockwise, when the most actively rotating counterclockwise tensioner knob, and could be by chain
Bar guide plate unclamps, thus avoids chain guide actively to get loose.
In another embodiment, being fixed on by clamping screw on main bearing, chain guide and guide plate liner plate are locked at one
Rise cannot relative motion, guide plate has chute, chute mate with the projection of main bearing, it is ensured that chain guide can be along cunning
Groove direction seesaws；Having chimb on guide plate liner plate, when cam rotates clockwise, chimb can be stirred by cam 7, makes guide plate
Liner plate 9 travels forward, it is achieved chain tensioner function.Cam is provided with and the jacking block of drive plate slotted engagement, porose in the middle of two parts,
Being installed with locking cap 8, drive plate 6 cam 7 can rotate around locking cap together, and can not occur relatively rotating.Have on drive plate
Four bearing pins, two of which is fitted with ratchet and ratchet torsion spring, guide plate guard shield inner ring has teeth；Tensioner knob can also be around
Locking cap to rotate, it has rocking arm, when rotating clockwise tensioner knob 2, rocking arm can stir two other pin of drive plate
Axle, makes drive plate rotate clockwise, and at ratchet, ratchet torsion spring, under guide plate guard shield effect, drive plate cannot actively reverse, real
Existing chain tensioner function.When tensioner knob rotates counterclockwise, rocking arm thereon can stir ratchet, discharges the locking to drive plate,
Chain can get loose.When, after the tensioner knob that turns clockwise, chain guide tensioner, turn clockwise locking knob, locking knob
Owing to fitting together cannot relatively rotate with locking cap, locking knob has female thread, clamping screw has external screw thread, works as lock
When tight cap turns clockwise, it is achieved the locking function of chain guide, when rotating counterclockwise, the locking function of release chain guide.
From the above mentioned, mechanism divides tensioner part and lock portion, by a middle locking cap by two sections in series one
Rising, tensioner part can relatively rotate with locking cap, and lock portion rotates together with locking cap；Meanwhile, tensioner part is by two
Ratchet, two torsion springs, guide plate guard shield, drive plate, cam, guide plate lining, tensioner knob forms, and ratchet cannot hinder drive plate suitable
Hour hands rotate, but it can be hindered to rotate counterclockwise, and when tensioner knob drives drive plate to turn clockwise, cam revolves therewith
Turn, promote the reach of guide plate liner plate, it is achieved tensioner function；When tensioner knob rotates counterclockwise, stir ratchet, release to drive plate without
The locking that method rotates counterclockwise, chain can get loose under external force；Lock portion is by locking knob, locking cap, locking screw
Bolt forms, and locks when turning clockwise, release locking when rotating counterclockwise.Tension mechanism is arranged on chain saw body, by rotation
Turning tensioner knob and realize chain tensioner function, convenient and reliable, tension mechanism is difficult to lose；Meanwhile, tension mechanism is provided with spine
Pawl and torsion spring, be prevented effectively from chain guide actively retraction and cause chain to get loose.
Although embodiment of the present invention are disclosed as above, but it is not restricted in description and embodiment listed
Using, it can be applied to various applicable the field of the invention completely, for those skilled in the art, and can be easily
Realizing other amendment, therefore under the general concept limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details with shown here as the legend with description.
Claims (10)
1. the tool-free tension mechanism of chain saw, including chain guide and tensioner knob, it is characterised in that described tensioner knob is even
Connecing a cam, chain guide described in described actuated by cams moves on chain saw, and described chain saw is additionally provided with for being led by described chain
Plate and cam are fixed on the locking knob on described chain saw.
2. the tool-free tension mechanism of chain saw as claimed in claim 1, it is characterised in that described chain saw is provided with and chain guide phase
The most fixing guide plate liner plate, described guide plate liner plate is provided with the chimb of outward, and the outline of described cam is resisted against described convex
Limit.
3. the tool-free tension mechanism of chain saw as claimed in claim 2, it is characterised in that chain saw is provided with join fixing with described cam
The drive plate closed, described drive plate drives described cam rotation.
4. the tool-free tension mechanism of chain saw as claimed in claim 1, it is characterised in that described chain saw front end is provided with main
Seat, described main bearing is provided with one protruding, and described chain guide and guide plate liner plate run through up and down has one to mate with described projection
Chute, described chute is movably arranged in described projection, and described chimb direction is vertical with described chute direction.
5. the tool-free tension mechanism of chain saw as claimed in claim 3, it is characterised in that described chain saw be provided with lid be located at described in lead
The guide plate guard shield of plate liner plate upper end, described guide plate guard shield is arranged on described main bearing in removable lining mode, and described guide plate protects
Offering a circular hole on cover, described circular hole inner ring is provided with teeth, and described tensioner knob is movably arranged on described circular hole upper end.
6. the tool-free tension mechanism of chain saw as claimed in claim 5, it is characterised in that described drive plate is provided with torsion spring and spine
Pawl, two torque arm of described torsion spring are supported between the inner side of described projection and described ratchet, and the cat's paw of described ratchet is described
It is connected with the engagement of described circular hole inner ring teeth under the thrust of torsion spring.
7. the tool-free tension mechanism of chain saw as claimed in claim 6, it is characterised in that offer a fluting on described drive plate,
Described upper cam surface is protruded and is provided with a jacking block, and described jacking block is fastened in described fluting.
8. the tool-free tension mechanism of chain saw as claimed in claim 7, it is characterised in that described cam, drive plate, circular hole, rise
Tight knob and described locking knob are by a locking cap axial restraint, and described locking cap bottom is resisted against described cam and depends on
The secondary axle center running through described cam, drive plate, circular hole and tensioner knob is also fixed in described locking knob.
9. the tool-free tension mechanism of chain saw as claimed in claim 8, it is characterised in that described tensioner knob rotates clockwise
Time, driving described drive plate and cam rotation, described ratchet and described teeth sliding contact, described cam promotes described guide plate lining
Plate moves with tensioner chain；
When described tensioner knob rotates counterclockwise, described tensioner knob drives described drive plate and cam rotation, described ratchet with
Described teeth depart from, to discharge the chain of tensioner；
Wherein, described ratchet engages with described teeth so that described cam cannot actively rotate counterclockwise.
10. the tool-free tension mechanism of chain saw as claimed in claim 1, it is characterised in that be provided with sky inside described tensioner knob
Chamber, described locking knob is movably arranged in described cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736099.0A CN106171827B (en) | 2016-08-26 | 2016-08-26 | Tool-free tensioning mechanism of chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736099.0A CN106171827B (en) | 2016-08-26 | 2016-08-26 | Tool-free tensioning mechanism of chain saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106171827A true CN106171827A (en) | 2016-12-07 |
| CN106171827B CN106171827B (en) | 2022-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610736099.0A Active CN106171827B (en) | 2016-08-26 | 2016-08-26 | Tool-free tensioning mechanism of chain saw |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108687616A (en) * | 2018-05-07 | 2018-10-23 | 苏州贝尔纳德铁路设备有限公司 | A kind of steel-rail rail-road switch grinder transmission case and its V-ribbed belt tensioning locating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108687616A (en) * | 2018-05-07 | 2018-10-23 | 苏州贝尔纳德铁路设备有限公司 | A kind of steel-rail rail-road switch grinder transmission case and its V-ribbed belt tensioning locating device |
| CN108687616B (en) * | 2018-05-07 | 2024-02-13 | 苏州贝尔纳德铁路设备有限公司 | Transmission case of steel rail turnout grinder and multi-wedge belt tensioning positioning mechanism thereof |
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| Publication number | Publication date |
|---|---|
| CN106171827B (en) | 2022-12-09 |
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