CN109877916A - A kind of electric chain saw - Google Patents
A kind of electric chain saw Download PDFInfo
- Publication number
- CN109877916A CN109877916A CN201711280021.3A CN201711280021A CN109877916A CN 109877916 A CN109877916 A CN 109877916A CN 201711280021 A CN201711280021 A CN 201711280021A CN 109877916 A CN109877916 A CN 109877916A
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- guide plate
- nutted rod
- casing
- elastic component
- tensioning
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Abstract
The invention discloses a kind of electric chain saws, belong to power tools technology field, including casing, motor, guide plate and saw chain, motor is set in casing, the rear end of guide plate is connected to casing, saw chain is set on guide plate and is driven by motor, motor driven saw chain is realized along guide plate circumferential direction shuttling movement and is cut, it further include the tensioning apparatus on casing, tensioning apparatus includes nutted rod, regulating mechanism and elastic component, the front end of nutted rod is triangular in shape and is connected to guide plate, rear end is connected to elastic component, elastic component is set between nutted rod and regulating mechanism, regulating mechanism is for adjusting elastic component, elastic component is in compressive state when locking guide plate, and elastic component drives guide plate Forward tensioning saw chain by nutted rod when unclamping guide plate.Electric chain saw provided by the invention realizes the purpose of driving guide plate Forward tensioning saw chain by the effect of elastic component, and tensioning movement is simple, is easy to implement the purpose of quickly tensioning saw chain, and do not have to be equipped with or carry the adjusting tool for being exclusively used in tensioning saw chain.
Description
Technical field
The present invention relates to power tools technology field more particularly to a kind of electric chain saws.
Background technique
With the development of electric tool and universal, electric tool has been widely used in the fields such as family, gardens, electric chain saw
It is then a kind of common electric tool.Electric chain saw is generally worked using electricity as power source drive motor, and motor, which drives, has cutting
The saw chain circulation high-speed motion of sword cuts timber or branch.In electric chain saw use process, saw chain can because cutting timber or
Branch and be worn, while can due to cutting expanded by heating.Abrasion and expansion will lead to saw chain relaxation, the elasticity meeting of saw chain
Become improper, if continuing to use can make cutting-rate decline that saw chain even occur from guide plate situations such as escape, influence using
Safety.Therefore, when saw chain relaxation, the elasticity for adjusting saw chain in time is needed to avoid sending out so that electric chain saw can work normally
Raw safety accident.
Conventionally known saw chain tension method is roughly divided into two kinds: a kind of method be by dedicated adjusting tool directly or
To realize the purpose for being tensioned saw chain, such tensioning method needs user to take with oneself for indirect turn adjusting screw rod and fastening binding nut
Band adjusts tool, and structure is complicated for electric chain saw complete machine, is not easy to realize the purpose of quickly tensioning saw chain；Another method is to pass through
Rotatable handle drives a series of adjustment mechanism movements to realize the purpose for being tensioned saw chain and resting guide, currently, such adjustment
Mechanism is generally existing, and structure is complicated, dismounting difficulty, poor reliability, locks the problems such as unreliable, and saw chain tension effect is poor.
Summary of the invention
In order to solve above-mentioned shortcoming and defect existing in the prior art, the present invention provides one kind convenient for quickly tensioning and
The electric chain saw of the stable saw chain of tension structure.
The purpose of the present invention is what is be achieved through the following technical solutions: a kind of electric chain saw, including casing, motor, guide plate and
Saw chain, motor are set in casing, and the rear end of guide plate is connected to casing, and saw chain is set on guide plate and is driven by motor, motor driven
Saw chain realizes along guide plate circumferential direction shuttling movement and cuts that the electric chain saw further includes the tensioning apparatus on casing, tensioning apparatus
Including nutted rod, regulating mechanism and elastic component, the front end of nutted rod is connected to guide plate, rear end is connected to elastic component, and elastic component is set
Between nutted rod and regulating mechanism, regulating mechanism is in compressive state when locking guide plate for adjusting elastic component, elastic component,
And elastic component drives guide plate Forward tensioning saw chain by nutted rod when unclamping guide plate, the front end of the nutted rod is triangular in shape,
The two corners of the triangle are fixedly connected on guide plate.
Further, the elastic component is spring, and spring pocket is set to the rear end of nutted rod, and nutted rod is equipped with stop collar, bullet
The front end of spring is contacted with stop collar, rear end is contacted with regulating mechanism.
Further, the regulating mechanism includes gear and the rack gear that engages with gear, and the rear end of spring is contacted with rack gear, tooth
Compressed spring when wheel drive rack gear moves forward.
Further, the rack gear is equipped with the jack for tensioning rod rear end insertion, and the rear end of nutted rod is set in jack, bullet
Spring is partially or fully located in jack, and the rear end of spring is contacted with the inner wall of jack.
Further, the regulating mechanism further includes the handle for rotating with moving gear, and gear is equipped with axially projecting
The jack-post of formation, casing are equipped with the limited post outwardly protruded and for limiting handle, and one end of handle is connected by pin rotation
It is connected to jack-post, the other end is equipped with the limit hole passed through for limited post.
Further, the casing is equipped with the mounting portion for installing regulating mechanism and the cover board for covering conjunction mounting portion,
Mounting portion includes arc panel and the platen below arc panel, and gear rotation is set in arc panel, and rack gear is set on platen, lid
Plate is equipped with the through-hole stretched out for jack-post, and handle is set to the outside of cover board.
Further, the front end of the nutted rod is equipped with pillar, the protrusion direction of pillar perpendicular to nutted rod length direction,
Guide plate is equipped with driving hole, realizes that nutted rod is connected to guide plate in pillar insertion driving hole.
Further, the casing includes main casing, and the outer wall of main casing front end is equipped with the boss for installing guide plate, convex
Platform is equipped with to be set in limiting slot with the matched limiting slot in nutted rod front end, the front end of nutted rod.
Further, the electric chain saw further includes the pressing plate being fixed on boss, and pressing plate is equipped with the bar shaped stretched out for pillar
Hole, the length direction of strip-shaped hole and the length direction of nutted rod are consistent.
Further, the casing further includes the side cover on main casing, and side cover is equipped with the platen for locking guide plate,
Tensioning apparatus is set between main casing and side cover, and boss is equipped with bolt, and pressing plate is equipped with the sets of holes that pass through for bolt, on guide plate
Equipped with the slot passed through for bolt, side cover is equipped with the circular hole that passes through for bolt, platen be equipped with the matched threaded hole of bolt,
Platen, which is tightened against on bolt, realizes locking guide plate.
The beneficial effects of the present invention are electric chain saw provided by the invention, on existing electric chain saw for being tensioned saw chain
Structure is improved, and the tensioning apparatus including nutted rod, regulating mechanism and elastic component has been added, real by the effect of elastic component
The purpose of driving guide plate Forward tensioning saw chain is showed, tensioning movement is simple, is easy to implement the purpose of quickly tensioning saw chain.
Detailed description of the invention
Fig. 1 is the schematic diagram of one electric chain saw of embodiment of the present invention entirety；
Fig. 2 is the part explosive view of one electric chain saw of the embodiment of the present invention；
Fig. 3 is the part explosive view of casing, tensioning apparatus and guide plate in one electric chain saw of the embodiment of the present invention；
Fig. 4 is the part explosive view of tensioning apparatus, guide plate and pressing plate in one electric chain saw of the embodiment of the present invention；
Fig. 5 is the connection schematic diagram of tensioning apparatus and guide plate in one electric chain saw of the embodiment of the present invention.
Specific embodiment
Elaborate with reference to the accompanying drawing to the embodiment of the present invention: the present embodiment before being with technical solution of the present invention
It puts and is implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to down
The embodiment stated.
As shown in Figure 1 and Figure 2, the embodiment of the present invention one provide electric chain saw, including casing 1, motor (not shown),
Guide plate 2 and saw chain 3, casing 1 are vertically another including main casing 11, set on the housing 12 of the vertical side of main casing and set on main casing
The side cover 13 of side.Motor is set in housing 12, and main casing 11, which is equipped with, to be sequentially connected in the driving wheel 14 of motor power output shaft,
Driving wheel is set between main casing 11 and side cover 13.The rear end of guide plate 2 is connected to main casing 11, and saw chain 3 encloses the week set on guide plate
To, while saw chain is sheathed on driving wheel 14.When electric chain saw works, electrical power work passes through power output shaft, driving wheel 14
Saw chain 3 is driven to realize the purpose of cutting timber or branch along the circumferential shuttling movement of guide plate 2.
As shown in figure 3, figure 4 and figure 5, the electric chain saw of the present embodiment further includes the tensioning apparatus on casing 1, tensioning dress
It sets including nutted rod 4, regulating mechanism and spring 41, regulating mechanism includes gear 5, the rack gear engaged with gear 6 and for driving
The handle 7 of gear rotation.The front end of nutted rod 4 is connected to guide plate 2, rear end is connected to rack gear 6, and spring 41 is set to tensioning rod rear end
Between rack gear.
The outer wall of main casing 11 is equipped with the mounting portion for installing regulating mechanism and the cover board 15 for covering conjunction mounting portion,
Mounting portion includes arc panel 16 and the platen 17 below arc panel, and the rotation of gear 5 is set in arc panel 16 and is located at main casing
Between body 11 and cover board 15, rack gear 6 is set on platen 17 and between main casing 11 and cover board 13, and cover board is fixed by screw
In on mounting portion.Gear and rack gear are set in the space that main casing, mounting portion and cover board are enclosed, convenient for improving regulating mechanism
Stability, while being convenient for assembling.
In the present embodiment, one end of handle 7 is rotationally connected with gear 5 by pin 71, and handle is located at the outer of cover board 15
Side, i.e. handle are located at side of the cover board far from main casing 11.Side cover 13 is equipped with the port 131 for device handle, side cover
Lower edge is equipped with the groove for pressing handle 7.Gear 5 is equipped with towards one end of side cover 13 and axially extends the jack-post to be formed
51, jack-post is equipped with the first pin hole 52 passed through for pin 71, and cover board 15 is equipped with the through-hole 151 stretched out for jack-post.Handle 7
One end is set there are two symmetrically arranged lug 72, and two lugs are equipped with the second pin hole 73 passed through for pin 71, and handle 7 passes through
The cooperation of pin 71 and the first pin hole 52, the second pin hole 73 is rotationally connected with the jack-post 51 on gear 5.
In order to limit handle 7, main casing 11 is equipped with the limited post 18 for being located at 17 lower section of platen and extending outward to form, hand
Handle 7 is equipped with the limit hole 74 being inserted into for limited post in one end far from gear 5.Guide plate 2 is completed fixed and is compressed to spring 41
Behind position, rotating down handle 7 is inserted into limited post 18 in limit hole 74.Then side cover 13 is fixed, handle is made to be located at port 131
It is interior, and side cover pushes down the end of handle 7 by groove.It so avoids handle 7 from rotating in body work, prevents gear 5
Cause rack gear 6 to move back trip spring 41 after loosening, keeps spring stable in compressive state after finishing assembly, guarantee to unclamp and lead
Spring 41 can drive the Forward tensioning saw chain 3 of guide plate 2 when plate 2.
Rack gear 6 is equipped with the jack 61 being inserted into for 4 rear end of nutted rod, and the rear end of nutted rod 4 is inserted into jack, and 41 sets of spring
Set on the rear end of nutted rod, and spring is partially or fully located in jack 61.For limit spring 41, nutted rod 4 is equipped with position
Stop collar 42 in the front of rack gear 6, the front end of spring 41 is contacted with stop collar, rear end is contacted with the inner wall of jack 61.Nutted rod 4
Rear end connect with rack gear 6, spring 41 be set to rack gear on jack 61 in, convenient for improve tensioning apparatus entirety installation stabilization
Property, and then guarantee the stability in use of tensioning apparatus.
Specific in the present embodiment, jack 61 is arranged along the length direction of rack gear 6 through rack gear, and jack is stepped bore,
The internal diameter of jack front end is big compared with the internal diameter of rear end, and the step for transition is provided between the front end of jack and the rear end of jack
Face.Spring 41 is partially or fully located at the inside of jack front end, and the rear end of spring is butted on step surface.The rear end of jack 61 with
The backend space cooperation of tight bar 4, jack 61 are arranged through rack gear 6, and nutted rod is big relative to the moveable stroke range of rack gear, keeps away
Exempt from nutted rod 4 cause because shift motion is restricted guide plate cannot move forward in place sufficiently tensioning saw chain.
11 front end of main casing is equipped with the boss 111 for installing guide plate 2 on the outer wall towards side cover 13, and boss is equipped with
It is axially perpendicular to the bolt 112 of boss.Casing 1 further includes the pressing plate 19 being fixed on boss, and pressing plate is equipped with and wears for bolt 112
The sets of holes 191 crossed.Side cover 13 is equipped with the platen 132 for locking guide plate 2, and side cover is equipped with the circular hole passed through for bolt 112
133, platen 132 is equipped with and the matched threaded hole of bolt.Guide plate 2 is equipped with and passes through for bolt 112 and elongated slot
21, pressing plate 19 is fixed on boss 111, and bolt 112 penetrates the slot 21 on guide plate 2 and the circular hole on side cover 133, platen 132
It is twisted by the cooperation of threaded hole and bolt 112 on bolt.It is simple for locking the structure of guide plate by platen and bolt cooperation,
Convenient for unclamping guide plate, tensioning saw chain in saw chain relaxation, platen disassembling section is simple, is exclusively used in disassembly pressure without being equipped with or carrying
The tool of disk is easy to use.
The front end of nutted rod 4 is equipped with pillar 43, the protrusion direction of pillar perpendicular to nutted rod length direction, on guide plate 2
Equipped with the driving hole 22 being inserted into for pillar 43.The nutted rod 4 is additionally provided with branch bar 411, and the top of the branch bar 411 is equipped with
Second pillar 431.The driving hole 22 is respectively arranged at the two sides up and down of the slot 21, the pillar 43 and described second convex
Column 431 is inserted into two driving holes 22 up and down respectively so that nutted rod 4 is connected to guide plate 2.Connection structure between the two is simple, and
The nutted rod 4 and branch bar 411 constitute the stability of strutting system that triangular support structure is conducive to the guide plate 2, and transmission effect is good,
And it is convenient for assembling.
Boss 111 is equipped with to be set in limiting slot with the matched limiting slot 113 in 4 front end of nutted rod, the front end of nutted rod 4,
Pressing plate 19 is equipped with the strip-shaped hole 192 stretched out for pillar 43, the length direction and item of the length direction of slot 21, limiting slot 113
The length direction in shape hole 192 is consistent with the length direction of nutted rod 4, and pillar 43 is inserted into guide plate after passing through the strip-shaped hole on pressing plate
In driving hole 22 on 2.The front end of nutted rod is set in limiting slot, convenient for improving the stability of nutted rod, the inner wall of limiting slot
There is guiding role to nutted rod, the stationarity and validity when nutted rod moves back and forth can be effectively improved.Pillar is in strip-shaped hole
When inside moving back and forth, strip-shaped hole has position-limiting action to pillar, can be further improved stationarity when nutted rod moves back and forth and
Validity.
As shown in figure 5, rotating clockwise by handle 7 with moving gear 5 when installation guide plate 2, moving back rack gear 6, bullet is unclamped
Spring 41, spring are in free state, eliminate the active force between spring and nutted rod 4, avoid nutted rod 4 because of the work by spring
Firmly the installation of guide plate 2 is caused to interfere.
After guide plate 2, saw chain 3 are installed, bolt 112 passes through the slot 21 on guide plate 2, inverse with moving gear 5 by handle 7
Hour hands rotation makes the Forward compressed spring 41 of rack gear 6.After the compression to a certain degree of spring 41, turn handle 7 downwards relative to gear 5
Dynamic, limited post 18 is inserted into the limit hole 74 on handle, is limited by the cooperation of limited post and limit hole to handle 7, from
And gear 5 and rack gear 6 is made to be in stable state.Side cover 13 is placed on main casing 11, is twisted platen 132 by being threadedly engaged
Tightly on bolt 112, platen locks guide plate 2, and side cover is fixed on a main housing.
When relaxation occurs electric chain saw for saw chain 3 after a period of work, reversed appropriate rotation platen 132 unclamps guide plate 2,
Since the spring 41 of compression has active force to nutted rod 4, nutted rod 4 moves forward under the elastic force effect of spring, and nutted rod 4 moves forward
When drive guide plate 2 Forward tensioning saw chain 3.After the tensioning of saw chain 3, platen 132 is tightened again, keeps guide plate 2 fixed.
When the abrasion of saw chain 3 needs replacing to a certain extent, platen 132 is backed out, side cover 13 is removed from main casing 11.
Rotational handle 7 is moved back with carry-over bar 6, and trip spring 41 removes guide plate 2 and saw chain 3.After the saw chain more renewed, pass through above-mentioned note
The step of installation guide plate of load, is installed.
The present embodiment realizes the purpose of driving guide plate Forward tensioning saw chain by the effect of spring, and tensioning movement is simple,
It is easy to implement the purpose of quickly tensioning saw chain.In addition, not having to be equipped with or carry due to need to only unclamp guide plate when tensioning saw chain
It is exclusively used in the adjusting tool of tensioning saw chain, advantageously reduces the acquisition cost of user, reduces operation difficulty.
In the present embodiment, casing 1 is equipped with front handlebar 81, rear handle 82 and brake baffle 83, is equipped with and is connected in casing
The brake gear of brake baffle, for realizing the purpose of emergency braking.
" front end " of above-mentioned each component refers to that the one end of each component far from rear handle, " rear end " of above-mentioned each component refer to each component
Close to one end of rear handle, " Forward " of above-mentioned each component refers to that each component is mobile towards the direction far from rear handle, on
" the moving back " for stating each component refers to each component towards close to the movement of the direction of rear handle.
It is understood that can also be real by screw or other modes between the nutted rod 4 in the present embodiment and guide plate 2
Now connect.
It is understood that the pillar 43 in the present embodiment can also be formed by the front end 90-degree bent of nutted rod 4.It can be with
Understand, the stop collar 42 and nutted rod 4 in the present embodiment can use integrally formed structure, can also use split type
The structure of assembled formation.Likewise, pillar 43 and nutted rod 4 can also use integrally formed structure or split type assembled formation
Structure.
It is understood that the spring 41 in the present embodiment can also only be needed using other flexible component substitutions
It can restore the requirement of deformation driving nutted rod Forward when compressing and unclamp after meeting stress.
It is understood that the regulating mechanism in the present embodiment can also be substituted using other structures, such as slide block structure,
It can only compress when need to meet movement or the requirement of trip spring.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and
Improvement is both fallen in the range of claimed invention.The claimed scope of the invention is by appended claims and its waits
Effect object defines.
Claims (10)
1. a kind of electric chain saw, including casing, motor, guide plate and saw chain, motor is set in casing, and the rear end of guide plate is connected to machine
Shell, saw chain are set on guide plate and are driven by motor, and motor driven saw chain is realized along guide plate circumferential direction shuttling movement and cut, the current source
Saw further includes the tensioning apparatus on casing, and tensioning apparatus includes nutted rod, regulating mechanism and elastic component, the front end of nutted rod
Be connected to guide plate, rear end is connected to elastic component, elastic component is set between nutted rod and regulating mechanism, and regulating mechanism is for adjusting bullet
Property part, elastic component when locking guide plate be in compressive state, and elastic component when unclamping guide plate by nutted rod driving guide plate before
Move tensioning saw chain, it is characterised in that: the front end of the nutted rod is triangular in shape, and the two corners of the triangle, which are fixedly connected on, to be led
Plate.
2. electric chain saw according to claim 1, which is characterized in that the elastic component is spring, and spring pocket is set to nutted rod
Rear end, nutted rod be equipped with stop collar, the front end of spring is contacted with stop collar, rear end is contacted with regulating mechanism.
3. electric chain saw according to claim 2, which is characterized in that the regulating mechanism includes gear and engages with gear
Rack gear, the rear end of spring are contacted with rack gear, compressed spring when gear driving rack moves forward.
4. electric chain saw according to claim 3, which is characterized in that the rack gear is equipped with inserting for tensioning rod rear end insertion
The rear end in hole, nutted rod is set in jack, and spring is partially or fully located in jack, and the rear end of spring is contacted with the interior of jack
Wall.
5. electric chain saw according to claim 3, which is characterized in that the regulating mechanism further includes rotating for band moving gear
Handle, gear is equipped with the jack-post of axially projecting formation, and casing, which is equipped with, to be outwardly protruded and for limiting the limit of handle
Column, one end of handle is connected to jack-post by pin rotation, the other end is equipped with the limit hole passed through for limited post.
6. electric chain saw according to claim 5, which is characterized in that the casing is equipped with the peace for installing regulating mechanism
Dress portion and for covering the cover board for closing mounting portion, mounting portion includes arc panel and the platen below arc panel, and gear rotation is set
In in arc panel, rack gear is set on platen, and cover board is equipped with the through-hole stretched out for jack-post, and handle is set to the outside of cover board.
7. electric chain saw according to claim 1-6, which is characterized in that the front end of the nutted rod is equipped with pillar,
The protrusion direction of pillar is perpendicular to the length direction of nutted rod, and for guide plate equipped with driving hole, pillar is inserted into realization in driving hole
Tight bar is connected to guide plate.
8. electric chain saw according to claim 7, which is characterized in that the casing includes main casing, main casing front end it is outer
Wall is equipped with boss for installing guide plate, boss be equipped with the matched limiting slot in nutted rod front end, the front end of nutted rod is set
In in limiting slot.
9. electric chain saw according to claim 8, which is characterized in that the electric chain saw further includes the pressure being fixed on boss
Plate, pressing plate are equipped with the strip-shaped hole stretched out for pillar, and the length direction of strip-shaped hole and the length direction of nutted rod are consistent.
10. electric chain saw according to claim 9, which is characterized in that the casing further includes the side cover on main casing,
Side cover is equipped with the platen for locking guide plate, and tensioning apparatus is set between main casing and side cover, and boss is equipped with bolt, pressing plate
The sets of holes passed through for bolt are equipped with, guide plate is equipped with the slot passed through for bolt, and side cover is equipped with the circular hole passed through for bolt,
Platen, which is equipped with, is tightened against realization locking guide plate on bolt with the matched threaded hole of bolt, platen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711280021.3A CN109877916A (en) | 2017-12-06 | 2017-12-06 | A kind of electric chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711280021.3A CN109877916A (en) | 2017-12-06 | 2017-12-06 | A kind of electric chain saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109877916A true CN109877916A (en) | 2019-06-14 |
Family
ID=66924478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711280021.3A Pending CN109877916A (en) | 2017-12-06 | 2017-12-06 | A kind of electric chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109877916A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112606107A (en) * | 2020-12-08 | 2021-04-06 | 芜湖精锋园林机械科技有限公司 | Electric saw chain blade mounting structure |
| CN113263554A (en) * | 2021-04-13 | 2021-08-17 | 浙江亚特电器有限公司 | Chain saw |
| CN114425802A (en) * | 2020-10-29 | 2022-05-03 | 南京德朔实业有限公司 | Chain saw |
| CN115922847A (en) * | 2022-12-15 | 2023-04-07 | 金华绿川科技有限公司 | Chain tensioning mechanism for chain saw convenient to adjust tension |
| US12053832B2 (en) | 2021-02-03 | 2024-08-06 | Techtronic Cordless Gp | Chainsaws |
-
2017
- 2017-12-06 CN CN201711280021.3A patent/CN109877916A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114425802A (en) * | 2020-10-29 | 2022-05-03 | 南京德朔实业有限公司 | Chain saw |
| CN112606107A (en) * | 2020-12-08 | 2021-04-06 | 芜湖精锋园林机械科技有限公司 | Electric saw chain blade mounting structure |
| US12053832B2 (en) | 2021-02-03 | 2024-08-06 | Techtronic Cordless Gp | Chainsaws |
| CN113263554A (en) * | 2021-04-13 | 2021-08-17 | 浙江亚特电器有限公司 | Chain saw |
| CN115922847A (en) * | 2022-12-15 | 2023-04-07 | 金华绿川科技有限公司 | Chain tensioning mechanism for chain saw convenient to adjust tension |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190614 |
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| WD01 | Invention patent application deemed withdrawn after publication |