CN110587722A - Chain saw - Google Patents
Chain saw Download PDFInfo
- Publication number
- CN110587722A CN110587722A CN201910993068.7A CN201910993068A CN110587722A CN 110587722 A CN110587722 A CN 110587722A CN 201910993068 A CN201910993068 A CN 201910993068A CN 110587722 A CN110587722 A CN 110587722A
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- China
- Prior art keywords
- tensioning
- chain saw
- chain
- support
- assembly
- 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.)
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- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B17/00—Chain saws; Equipment therefor
- B27B17/02—Chain saws equipped with guide bar
- B27B17/025—Composite guide bars, e.g. laminated, multisectioned; Guide bars of diverse material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B17/00—Chain saws; Equipment therefor
- B27B17/14—Arrangements for stretching the chain saw
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Sawing (AREA)
Abstract
The invention provides a chain saw. The chain saw comprises a shell, a driving system accommodated in the shell, a guide plate extending outwards from the shell, a chain arranged on the guide plate and driven by the driving system, and a tensioning assembly used for tensioning the chain, wherein the guide plate is provided with a connecting part arranged corresponding to the tensioning assembly, the tensioning assembly comprises an operating part, a tensioning part and a transmission assembly for connecting the operating part and the tensioning part in a transmission manner, and the operating part and the transmission assembly can be in tripping fit so as to release the redundant tensioning force transmitted by the tensioning assembly when a user enables the chain to be in a tensioning state through the cooperation of the tensioning assembly and the connecting part. The chain saw provided by the invention can achieve the purpose of fastening the guide plate while tensioning the chain of the chain saw by arranging the tensioning assembly, has a simple, reliable and durable structure, and reduces the production and use cost of the chain saw.
Description
Technical Field
The invention relates to a chain saw, in particular to a chain tensioning structure of the chain saw.
Background
A chainsaw is a gardening tool that cuts wood or branches by power-driving a chain with blades to rotate at high speed. If the chain is not properly tensioned, too much slack may jump off the guide plate causing injury to the operator, and an overly tight chain may cause high temperature failure due to excessive friction between the chain and the guide plate. Also, during use, there is a considerable change in the tension of the chain due to wear of the chain, which gradually increases in length over time, resulting in a decrease in the chain tension.
At present, the existing well-known chain tensioning methods are roughly divided into two categories, one category is that one or more special tools are needed to be used, an adjusting screw rod and a fastening clamping nut are directly or indirectly rotated, and the structure needs a user to carry the adjusting tool with him, so that the use is inconvenient; the other type is that the tensioning of the chain and the fixing of the guide plate are respectively realized by adjusting a handle or knob which can be rotated by hands to drive a series of adjusting structures, but the handle or knob is usually provided with an outer knob and an inner knob, and the tensioning chain is stepped: the first step is chain tensioning, and the second step is pressed tightly by the guide plate, so the step operation brings inconvenience for assembly for a user, and the structure is relatively complex.
In view of the above, there is a need for a new chain saw to solve the above technical problems. The structure is complicated, and the reliability, the durability are relatively poor.
Disclosure of Invention
The chain saw is simple in structure, reliable and durable, and production and use costs of the chain saw are reduced.
In order to achieve the above object, the present invention provides a chain saw including a housing, a driving system accommodated in the housing, a guide plate extending outward from the housing, a chain arranged on the guide plate and driven by the driving system, and a tensioning assembly for tensioning the chain, wherein the guide plate is provided with a connecting portion arranged corresponding to the tensioning assembly, the tensioning assembly includes an operating portion, a tensioning portion, and a transmission assembly for transmitting the operating portion and the tensioning portion, and the operating portion and the transmission assembly are in releasable engagement to release an excessive tensioning force transmitted by the tensioning assembly when a user places the chain in a tensioned state through engagement of the tensioning assembly and the connecting portion.
As a further improvement of the present invention, the operating portion is provided with a lower end tooth, the transmission assembly includes a bracket and an elastic module accommodated in the bracket, and the elastic module is in releasable fit with the lower end tooth.
As a further improvement of the present invention, the elastic module includes an elastic member accommodated in the bracket and a ball elastically pressed against the elastic member, and the ball is partially exposed out of the bracket and located between the elastic member and the lower end tooth, so that the transmission assembly is in releasable fit with the operating portion through the fit between the ball and the elastic member.
As a further development of the invention, the distance of the sphere from the support is one third of the diameter of the sphere.
As a further improvement of the present invention, the elastic module includes an adjusting block accommodated in the bracket, and the elastic member elastically abuts between the ball and the adjusting block, so as to adjust the compression force of the elastic member against the ball through the adjusting block.
As a further improvement of the present invention, the bracket is provided with a through hole for accommodating the elastic module, the ball body is exposed out of the bracket from one end of the through hole close to the operating part, and the adjusting block is exposed out of the other end of the through hole; the tensioning portion is provided with a through hole which is arranged corresponding to the through hole, the part of the adjusting block exposed from the through hole is contained in or penetrates through the through hole, and an operator can adjust the compression force of the elastic piece which abuts against the ball body by changing the position of the adjusting block.
As a further improvement of the present invention, the operating portion is provided with a pin, the bracket and the tensioning portion are provided with receiving holes for receiving the pin, the chain saw is further provided with a bolt corresponding to the pin, the pin penetrates through the bracket and the tensioning portion, and the bolt penetrates through the guide plate and cooperates with the pin to fasten the guide plate to the housing.
As a further improvement of the present invention, the tensioning portion is fixedly connected with the bracket through a fixing member, the operating portion is releasably connected with the bracket through an elastic module, and when a release force between the lower end tooth and the ball is greater than an engaging force therebetween, the operating portion is in release fit with the bracket.
As a further improvement of the present invention, the number of the elastic modules is three, and the elastic modules are uniformly distributed on the bracket in the circumferential direction.
As a further improvement of the invention, the tensioning part is provided with at least one helical guide, or the tensioning part is any one of a one-way cam or a two-way cam.
The invention has the beneficial effects that: the chain saw is provided with the tensioning assembly with the operating part, the tensioning part and the transmission assembly, so that the guide plate is tightly connected to the shell of the chain saw through the tensioning assembly, the operating part and the transmission assembly are arranged to be in thread-off fit, the chain can be tensioned only by rotating the operating part, the tensioning degree of the chain is conveniently controlled, and the chain saw has the characteristics of simple structure, reliability, durability, easiness in production and use while the convenience and safety in use of the chain saw are ensured.
Drawings
FIG. 1 is a perspective view of the chain saw of the present invention.
FIG. 2 is a schematic view of the internal structure of the chain saw of FIG. 1 with a portion of the housing removed.
FIG. 3 is a schematic view of the interior of the chain saw of FIG. 2 with the tension assembly removed.
Figure 4 is an exploded view of the tension assembly of figure 1.
Figure 5 is a cross-sectional view of the tension assembly of figure 1.
Figure 6 is a schematic view of the operating portion of the tensioning assembly engaged with one of the spheres.
Figure 7 is a cross-sectional view of the tension assembly shown in figure 5.
Fig. 8 is a schematic structural view of the tension part in fig. 4.
Figure 9 is a schematic perspective view of the tension assembly of figure 4 from another angle.
Fig. 10 is a schematic view of a second embodiment of the tension section.
Figure 11 is a perspective view of a third embodiment of a tension section.
Detailed Description
In order to make the purpose, technical solution and effect of the present application clearer and clearer, the present application is further described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 3, a chain saw 100 according to the present invention is shown. The chainsaw 100 includes a housing 1, a drive system 2 housed in the housing 1, a guide plate 3 extending outward from the housing 1, a chain 4 disposed on the guide plate 3 and driven by the drive system 2 to reciprocate, and a tension assembly 5 for tensioning the chain 4.
In a preferred embodiment of the present invention, the housing 1 includes a first housing (not numbered) and a second housing (not numbered) that are fastened together, and the first housing and the second housing enclose a receiving space for receiving the driving system 2, and in this embodiment, the housing 1 further includes a rear handle 11, a front handle 12 corresponding to the rear handle 11, and a trigger 21 that penetrates the housing 1 for controlling the operation of the driving system 2, so that an operator can conveniently hold the front handle 12 and the rear handle 11 and complete the operation of the chain saw 100 by pulling the trigger 21.
In the present invention, the chain saw 100 further comprises an energy supply unit 6 in power connection with the driving system 2, in the present invention, the energy supply unit 6 is a battery pack detachably mounted on the housing 1, and the battery pack is electrically connected with the driving system 2 to supply energy to the chain saw 100, but in other embodiments of the present invention, the chain saw 100 can also supply energy through the energy supply unit 6 such as an external power supply, an internal combustion engine, etc., to complete corresponding work.
Further, the chain saw 100 further comprises a protection plate 7 connected to the housing 1 and a brake device (not shown) disposed in cooperation with the protection plate 7, in a preferred embodiment of the present invention, the protection plate 7 is rotatably connected to the housing 1, and the brake device is in control connection with the driving system 2, such that when the protection plate 7 is rotated, the brake device can be activated to further control the driving system 2 to stop working, so as to prevent accidents from occurring during the use of the chain saw 100, and preferably, the brake device is a mechanical brake structure or an electronic brake structure or a mechanical and electronic combined brake structure.
The guide plate 3 is detachably mounted on the casing 1 and extends outwards from one end of the casing 1. In the present invention, the guide plate 3 is fixedly mounted on the housing 1 by the tension assembly 5, and further, the guide plate 3 is provided with a connecting portion (not numbered) through which the tension assembly 5 fixedly connects the guide plate 3 to the housing 1.
Specifically, the connecting portion is provided with a guide groove 31 and a positioning plate 32 fixedly connected to the guide plate 3, wherein a side of the positioning plate 32 close to the tensioning assembly 5 is provided with a plurality of protrusions 33 arranged in a staggered manner along the extending direction of the guide groove 31, so that the guide plate 3 can be controlled to move along the extending direction of the guide groove 31 by adjusting the tensioning assembly 5 to realize the function of tensioning or releasing the chain 4.
The chain 4 is wound on the edge of the guide plate 3 and is in driving connection with the driving system 2, so that the chain 4 can reciprocate under the driving action of the driving system 2, specifically, the chain 4 is sleeved on the guide plate 3 and a driving shaft of the driving system 2, and when the tensioning assembly 5 controls the guide plate 3 to move along the side far away from the driving shaft, the chain 4 is tensioned; when the tensioning assembly 5 controls the guide plate 3 to move along the side proximate to the drive shaft, the chain 4 is loosened.
Referring to fig. 4 to 9, the tension assembly 5 includes an operation portion 51, a tension portion 52, and a transmission assembly 53 for driving and connecting the operation portion 51 and the tension portion 52. In the present invention, the operation part 51 is an outer knob, and the outer knob 51 includes a lower end tooth 511 provided toward the tension part 52 and the transmission member 53 side and a pin 512 extending from the center of the operation part 51 toward the tension part 52 and the transmission member 53 side.
In a preferred embodiment of the present invention, the surface of the pin 512 is smooth and penetrates through the tensioning portion 52 and the transmission assembly 53, further, the pin 512 is provided with a threaded hole along the axial direction thereof, the housing 1 is provided with a bolt 13 disposed corresponding to the threaded hole, the tensioning assembly 5 is detachably connected to the housing 1 through the engagement between the threaded hole and the bolt 13, and in this embodiment, the bolt 13 passes through the guide plate 3 and cooperates with the pin 512 to fasten the guide plate 3 to the housing 1, so that when the tensioning assembly 5 is rotated to adjust the tensioning degree of the chain 4, the tensioning assembly 5 can synchronously move toward the direction close to the housing 1 through the engagement between the threaded hole and the bolt 13, thereby further clamping the guide plate 3 fixed between the tensioning assembly 5 and the housing 1, and effectively preventing the guide plate 3 from being loosened during use.
The tensioning portion 52 is used to bring the guide plate 3 via the connecting portion in the extending direction of the guide slot 31 to tension/release the chain 4. In a preferred embodiment of the present invention, the tension portion 52 is provided with an accommodating hole 521 for accommodating the pin 512, a through hole 522 disposed around the accommodating hole 521, and a spiral guide 523 disposed on a side of the tension portion 52 close to the guide plate 3, and in the present invention, at least 1 spiral guide 523 is provided, and preferably, 2 spiral guides 523 are provided.
Specifically, the spiral guide 523 is disposed corresponding to the protrusions 33 of the positioning plate 32 and is caught between two adjacent protrusions 33, and when the tensioning portion 52 rotates, the spiral guide 523 slides between two adjacent protrusions 33 to further push/drive the guide plate 3 to move along a side away from/close to the driving shaft to tension/loosen the chain 4.
The transmission assembly 53 includes a bracket 531 and an elastic module 532 received in the bracket 531, and the elastic module 532 is in releasable engagement with the operating portion 51. Specifically, the bracket 531 includes an accommodating hole 533 for accommodating the pin 512 and a through hole 534 disposed around the accommodating hole 533, the through holes 522 are disposed in one-to-one correspondence with the through holes 534, further, the bracket 531 is further provided with a blind hole 535 disposed to be offset from the through hole 534, the tension portion 52 is provided with a positioning hole 524 disposed in correspondence with the blind hole 535, and the tension portion 52 and the bracket 531 are connected integrally by a fixing member 54 penetrating through the positioning hole 524 and connected to the blind hole 535 so as to rotate under the driving of the operation portion 51.
It should be noted that the number of the through holes 534 and the blind holes 535, and the number of the through holes 522 and the positioning holes 524 respectively corresponding to the through holes 534 and the blind holes 535 in the present invention are at least 1, and preferably, the number of the through holes 534 and the blind holes 535, the number of the through holes 522 and the positioning holes 524 are 3, and the through holes 534 and the blind holes 535, the through holes 522 and the positioning holes 524 are uniformly distributed in the circumferential direction of the bracket 51 and the tensioning portion 52.
The elastic module 532 includes an elastic member 536 received in the bracket 531 and a ball 537 elastically pressed against the elastic member 536. Specifically, the elastic member 536 and the ball 537 are accommodated in the through hole 534, and the ball 537 partially penetrates the through hole 534 by the abutting action of the elastic member 536, and exposes the bracket 531 from one end of the through hole 534 near the operation portion 51 and is located between the elastic member 536 and the lower end tooth 511 to cooperate with the lower end tooth 511 so that the transmission assembly 53 is releasably engaged with the operation portion 51 by the cooperation of the ball 537 and the elastic member 536. Preferably, the distance that the sphere 537 is exposed to the support 531 is one third of the diameter of the sphere 537.
In this embodiment, the elastic member 536 is a spring, but in other embodiments of the present invention, the elastic member 536 may also be a spring plate or a structure or a part capable of performing its function. Ball 537 is a steel ball, although in other embodiments of the invention, ball 537 may be of other suitable materials or suitable shapes.
Further, the spring module 532 further includes an adjusting block 538 received in the bracket 531, and the spring 536 is elastically abutted between the ball 537 and the adjusting block 538, so that the force applied to the ball 537 by the spring 536 is further adjustable, and preferably, the force applied to the ball 537 by the spring 536 is 20N.
Specifically, adjustment block 538 is exposed from one end of through hole 534 near tensioner 52, and the exposed portion of adjustment block 538 from through hole 534 is received in or through hole 522, such that when the compressive force of resilient member 536 against ball 537 is too high/too low, the operator can adjust the position of adjustment block 538 via hole 522 and through hole 534 to balance the compressive force of resilient member 536 against ball 537. In a preferred embodiment of the present invention, the adjusting block 538 is threadedly engaged with the bracket 531 through an internal thread, so that the length of the elastic member 536 can be effectively adjusted through the thread structure, and the effective compression force of the elastic member 536 can be conveniently and effectively adjusted after the elastic member 536 is fatigued due to long-term use.
In a preferred embodiment of the present invention, the tension assembly 5 further includes a flat washer 55 and a retainer ring 56, and the pin 512 is provided with an annular groove 513 corresponding to the retainer ring 56. Specifically, when assembling the tension module 5, first, the pin 512 of the operating portion 51 is inserted through the receiving hole 533 of the bracket 531, the receiving hole 521 of the tension portion 52, the flat washer 55, and the retainer ring 56 in this order, and the retainer ring 56 is engaged with the annular groove 513, so that the operating portion 51, the bracket 531, the tension portion 52, the flat washer 55, and the retainer ring 56 are integrally combined, thereby completing the assembly of the tension module 5.
Further, the bolt 13 passes through the guide slot 31 of the guide plate 3 and the positioning plate 32 in sequence from bottom to top to be engaged with the pin 512 of the tension assembly 5, and the tension assembly 5 and the guide plate 3 are fixedly connected to the housing 1 by the rotational engagement between the pin 512 and the bolt 13, completing the assembly of the chain saw 100, and at this time, the elastic member 536 is compressed and the ball 537 is engaged with the lower end tooth 511 of the operating part 51 under the elastic support of the elastic member 536.
When the chain saw 100 of the present invention is used, if the chain 4 is loosened, the operating part 51 is rotated, and at this time, the bracket 531 and the tension part 52 connected to the bracket 531 rotate synchronously with the operating part 51 in the same direction, and the spiral guide rail 523 on the lower end surface of the tension part 52 is engaged with the protrusion 33 on the positioning plate 32, so as to push the guide plate 3 to advance, thereby tensioning the chain 4; when the chain 4 is in a tensioned state, and the tripping force between the lower end teeth 511 and the ball 537 is greater than the engaging force therebetween, the operation portion 52 and the elastic module 532 are in a tripping fit, and at this time, the operation portion 51 continues to rotate, and the bracket 531 and the tensioning portion 52 do not rotate any more, so that the chain 4 is prevented from being over tensioned, and the tensioning degree of the chain 4 is effectively controlled.
It should be noted that, in the present invention, only the case that the tensioning portion 52 is provided with at least one spiral guide rail 523 is taken as an example for illustration, in other embodiments of the present invention, the tensioning portion 52 may also be a one-way cam 52 '(as shown in fig. 10) or a two-way cam 52 "(as shown in fig. 11), etc., instead of the tensioning portion 52 provided with at least one spiral guide rail 523, and the installation manner of the tensioning portion 52 is the same as that of the tensioning portion 52 in the embodiment of the present invention, and the difference is only that when the tensioning portion 52 is the one-way cam 52' or the two-way cam 52", the number of the protrusions 33 on the positioning plate 32 is 1, and other structures and operation principles are the same as above, and therefore, no further description.
In summary, the chain saw 100 of the present invention has the tensioning assembly 5 having the operation portion 51, the tensioning portion 52 and the transmission assembly 53, so that the guide plate 3 is tightly locked and connected to the housing 1 of the chain saw 100 by the tensioning assembly 5, and the operation portion 51 and the transmission assembly 53 are detachably engaged with each other, so that the tensioning of the chain 4 can be completed by only rotating the operation portion 51, and the tensioning degree of the chain 4 can be conveniently controlled, thereby ensuring the convenience and safety of the chain saw 100, and having the characteristics of simple structure, reliability, durability, and easy production and use.
The above description is only an embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes performed by the content of the present specification and the attached drawings, or applied to other related technical fields directly or indirectly, are included in the scope of the present invention.
Claims (10)
1. A chain saw comprising a housing, a drive system housed within the housing, a guide plate extending outwardly from the housing, a chain disposed on the guide plate and drivable by the drive system, and a tensioning assembly for tensioning the chain, characterized in that: the guide plate is provided with a connecting portion correspondingly arranged with the tensioning assembly, the tensioning assembly comprises an operating portion, a tensioning portion and a transmission portion, the operating portion is connected with the transmission assembly of the tensioning portion, the operating portion is matched with the transmission assembly in a releasing mode, and therefore when a user enables the chain to be in a tensioning state through the matching of the tensioning assembly and the connecting portion, the excessive tensioning force transmitted by the tensioning assembly is released.
2. The chain saw as recited in claim 1, wherein: the operating part is provided with lower end teeth, the transmission assembly comprises a support and an elastic module contained in the support, and the elastic module is in releasable fit with the lower end teeth.
3. The chain saw as recited in claim 2, wherein: the elastic module comprises an elastic piece accommodated in the support and a ball body elastically pressed against the elastic piece, and the ball body is partially exposed out of the support and positioned between the elastic piece and the lower end teeth, so that the transmission assembly can be in releasing fit with the operating part through the fit of the ball body and the elastic piece.
4. The chain saw as recited in claim 3, wherein: the distance of the sphere exposed from the support is one third of the diameter of the sphere.
5. The chain saw as recited in claim 3, wherein: the elastic module comprises an adjusting block accommodated in the support, and the elastic piece is elastically abutted between the ball body and the adjusting block so as to adjust the compression force of the elastic piece abutting against the ball body through the adjusting block.
6. The chain saw as recited in claim 5, wherein: the support is provided with a through hole for accommodating the elastic module, the ball body is exposed out of the support from one end of the through hole close to the operating part, and the adjusting block is exposed out of the other end of the through hole; the tensioning portion is provided with a through hole which is arranged corresponding to the through hole, the part of the adjusting block exposed from the through hole is contained in or penetrates through the through hole, and an operator can adjust the compression force of the elastic piece which is pressed against the ball body by changing the position of the adjusting block.
7. The chain saw as recited in claim 3, wherein: the chain saw is characterized in that the operating part is provided with a pin column, the support and the tensioning part are respectively provided with an accommodating hole for accommodating the pin column, the chain saw is further provided with a bolt which is arranged corresponding to the pin column, the pin column penetrates through the support and the tensioning part, and the bolt penetrates through the guide plate to be matched with the pin column so as to fasten the guide plate on the shell.
8. The chain saw as recited in claim 7, wherein: the tensioning part is fixedly connected with the support through a fixing part, the operating part is in releasable connection with the support through an elastic module, and when the releasing force between the lower end tooth and the ball body is larger than the meshing force between the lower end tooth and the ball body, the operating part is in releasing fit with the support.
9. The chain saw as recited in claim 2, wherein: the number of the elastic modules is three, and the elastic modules are uniformly distributed on the support in the circumferential direction.
10. The chain saw as recited in claim 1, wherein: the tensioning part is provided with at least one spiral guide rail, or the tensioning part is any one of a one-way cam or a two-way cam.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910993068.7A CN110587722B (en) | 2019-10-18 | 2019-10-18 | Chain saw |
| EP20202674.6A EP3808520B1 (en) | 2019-10-18 | 2020-10-19 | Chain saw |
| EP21192413.9A EP3932636B1 (en) | 2019-10-18 | 2020-10-19 | Chain saw |
| EP21192415.4A EP3954513A1 (en) | 2019-10-18 | 2020-10-19 | Chain saw |
| US17/074,566 US11524423B2 (en) | 2019-10-18 | 2020-10-19 | Chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910993068.7A CN110587722B (en) | 2019-10-18 | 2019-10-18 | Chain saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110587722A true CN110587722A (en) | 2019-12-20 |
| CN110587722B CN110587722B (en) | 2024-08-16 |
Family
ID=68850943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910993068.7A Active CN110587722B (en) | 2019-10-18 | 2019-10-18 | Chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110587722B (en) |
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| CN112594340A (en) * | 2020-12-11 | 2021-04-02 | 芜湖精锋园林机械科技有限公司 | Electric saw chain connecting and fixing device |
| CN114425802A (en) * | 2020-10-29 | 2022-05-03 | 南京德朔实业有限公司 | Chain saw |
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| CN114425802A (en) * | 2020-10-29 | 2022-05-03 | 南京德朔实业有限公司 | Chain saw |
| CN112594340A (en) * | 2020-12-11 | 2021-04-02 | 芜湖精锋园林机械科技有限公司 | Electric saw chain connecting and fixing device |
| CN112594340B (en) * | 2020-12-11 | 2024-10-15 | 芜湖精锋园林机械科技有限公司 | Fixing device is connected to electric saw chain |
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| CN110587722B (en) | 2024-08-16 |
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