CN203136679U - Chain saw - Google Patents
Chain saw Download PDFInfo
- Publication number
- CN203136679U CN203136679U CN 201220663873 CN201220663873U CN203136679U CN 203136679 U CN203136679 U CN 203136679U CN 201220663873 CN201220663873 CN 201220663873 CN 201220663873 U CN201220663873 U CN 201220663873U CN 203136679 U CN203136679 U CN 203136679U
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- CN
- China
- Prior art keywords
- guide plate
- output shaft
- housing
- driving member
- chain
- 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 provides a chain saw which comprises a casing, a saw chain, a chain wheel, a guide plate matched with the chain wheel and used for supporting and guiding, a cover plate for being matched with the casing to prevent trembling of the guide plate in the vertical direction, and a chain wheel tensioning mechanism, wherein the chain wheel tensioning mechanism is integrally combined and movably arranged in the casing, so as to enable that the position states of parts such as the saw chain, the guide plate, the tension nut, the chain wheel and the like can be observed during the entire assembly process, so as to ensure accurate positioning, as well as simplicity and fastness in operation. The chain wheel tensioning mechanism comprises a tensioning nut, a drive component and a tensioning hand wheel, and the included angle between the input shaft and the output shaft of the drive component is larger than 0 degree and smaller than 180 degrees. The drive component is connected through the tensioning hand wheel, the tensioning nut fixed on the guide plate is driven to move through the drive component so as to adjust the distance between the guide plate and the chain wheel to achieve the tension of the chain saw, and the comfort degree in operation is enhanced.
Description
Technical field
The utility model relates to a kind of garden instrument, particularly a kind of chain saw.
Background technology
Chain saw is a kind of garden instrument that cuts timber or branch by staggered L shaped blade transverse movement on the power set drive saw chain.Because the chain link in the saw chain of chain saw in use can produce wearing and tearing, make saw chain elongation and become lax at guide plate to cause the chain saw cisco unity malfunction, therefore need often to regulate the tensile force of saw chain, can operate as normal to keep chain saw.
The method of adjusting at present the saw chain tensile force generally has two kinds: a kind of is to use external tool to regulate, and this method is more original, and need be by other instruments when adjusting, very inconvenient; Another kind is to regulate by the governor motion that chain saw carries, and need for example not use adjusting handle to regulate by other external tools.The present product that uses above-mentioned governor motion to carry out the adjusting of saw chain tensile force is more, and it generally is to come the saw chain tensile force is adjusted by the mobile adjustment guide plate of screw rod drive tensioning nut and the relative position of saw chain.
The chain saw of adjusting the chain saw tensile force by the way generally includes housing and cover plate, housing and cover plate are realized fastening by cooperatively interacting of the connecting hole that arranges on hard-wired bolt and the cover plate on the housing, dress holds and is useful on sprocket wheel and guide plate that cooperates described sprocket wheel described saw chain to be carried out support guide that drives saw chain in the housing, offer the guide plate installing hole on the guide plate, cover plate is provided with the chain saw strainer that screw rod drives tensioning nut, the guide plate connecting portion of tensioning nut is contained in the guide plate installing hole, can drive tensioning nut by the rotation of manual adjustments screw rod and move along the screw axis direction, thereby the relative position of adjustment guide plate and saw chain is realized the tensioning of saw chain.
In assembling process, cover plate is installed in accurately needs on the housing to satisfy: the bolt that 1, is fixed on the housing is corresponding with the connecting hole on the cover plate; 2, the guide plate connecting portion of the tensioning nut on guide plate installing hole and the cover plate is corresponding.And to satisfy assembled condition, under the certain situation in guide plate position, need manual adjusting that the position of tensioning nut on the cover board is set, yet because chain saw tensioning device is arranged on the cover plate, in assembling process, tensioning nut is hidden under the cover plate, and is not easy to observe its particular location, has therefore strengthened assembly difficulty.And manual rotary screw to be to regulate the position of tensioning nut, and it is shorter that rotary screw one circle can be regulated the stroke of tensioning nut, and the size of screw rod is limited, and it is poor to operate comfort.
Summary of the invention
At the deficiencies in the prior art, it is a kind of easy to assembly that the utility model purpose is to provide, and locking operation is simple, comfortable chain saw.
A kind of chain saw, comprise housing, saw chain, by motor-driven and be bearing in the housing and can drive the sprocket wheel of saw chain motion, described saw chain is carried out the guide plate of support guide, cooperate the clamping guide plate to prevent the cover plate that it rocks in its vertical direction with housing, described chain saw also comprises the sprocket wheel strainer, described guide plate one end bearing is in described housing, the other end extends described housing along described housing longitudinally, described sprocket wheel strainer is installed on the housing, the sprocket wheel strainer comprises tensioning nut, drive disk assembly and tensioning handwheel, described drive disk assembly comprises the power shaft that is installed on the housing and can rotates relative to housing, first driving member by the power shaft drive, second driving member that cooperates with first driving member, output shaft by the drive of second driving member, described tensioning handwheel links to each other with the power shaft of drive disk assembly, and described tensioning handwheel is at least part of to stretch out described housing, described tensioning nut is fixedly connected with guide plate and be threaded with the output shaft of drive disk assembly so that tensioning nut can drive guide plate moves relative to output shaft, described power shaft is arranged in the plane parallel with guide plate, and the power shaft of described drive disk assembly and the angle between the output shaft are greater than 0 ° and less than 180 °.
Preferably, described first driving member and second driving member are bevel gear, and described first driving member is coplanar with the rotating shaft of second driving member and parallel with guide plate.
Preferably, described first driving member is worm gear, and described second driving member is the helical tooth structure that is formed on the output shaft.
Preferably, vertical mutually between the power shaft of described drive disk assembly and the output shaft.
Preferably, described output shaft is provided with the external thread structure that matches with tensioning nut, and tensioning nut matches to realize that with external thread structure on the output shaft it moves and locking function by its inner female thread structure that arranges.
Preferably, be set with to spline screw rod on the described output shaft, screw rod can rotate along with the rotation of output shaft synchronously, and described tensioning nut is sleeved on the described screw rod, and matches to realize that with external thread structure on the screw rod it moves and locking function by its inner female thread structure that arranges.
Preferably, the one-body molded fitting recess that placement output shaft and second driving member are arranged on the described housing, described output shaft can be connected on the described output shaft to the described second driving member spline around being arranged in the fitting recess that self axis rotates.
Preferably, described tensioning nut is perpendicular to described guide plate, the guide plate connecting portion structure that described tensioning nut comprises the internal thread connecting portion that links to each other with output shaft and is used for matching with guide plate, described guide plate is provided with the guide plate installing hole that matches with guide plate connecting portion on the tensioning nut, described guide plate connecting portion is contained in the guide plate installing hole, so that tensioning nut can drive the movement of guide plate.
Preferably, be set with guide part on the described housing, described guide plate is provided with pilot hole, and described guide part is contained in the pilot hole, and the width of described guide part is identical with pilot hole, and the length of guide part is less than the length of pilot hole.
Preferably, also be provided with bolt on the described housing, described chain saw also comprises a knob that is arranged in the correcting, and described knob is provided with internal thread, this bolt passes described pilot hole and knob cooperatively interacts, and cover plate can be tightened on the described guide plate by the rotation knob.
In the utility model, by the sprocket wheel strainer is arranged in the housing, make whole assembling process can observe the location status of parts such as saw chain, guide plate, tensioning nut, sprocket wheel, make accurate positioning, simple to operate, quick, and save installation time.And connect drive disk assembly by the tensioning handwheel, described drive disk assembly is Bevel Gear Transmission, and drive the motion be fixed on the tensioning nut on the guide plate by drive disk assembly and regulate the tensioning that distance between guide plate and the sprocket wheel realizes saw chain, increased the comfort level of operation.
Description of drawings
Fig. 1 is the utility model embodiment overall structure schematic diagram;
Fig. 2 is the cutaway view of the utility model embodiment;
Fig. 3 is the sprocket wheel strainer of the utility model embodiment and the floor map of associated components;
Fig. 4 is the sprocket wheel strainer of the utility model embodiment and the schematic perspective view of associated components;
Fig. 5 is not for installing the structural representation of saw chain, cover plate and guide plate in the utility model embodiment;
Fig. 6 is not for installing the structural representation of cover plate in the utility model embodiment.
Embodiment
In order to understand technology contents of the present utility model more easily, be described as follows especially exemplified by embodiment and conjunction with figs..
Please refer to Fig. 1 and Fig. 2, a kind of chain saw 10, comprise housing 11, saw chain 12, be bearing in the housing 11 and can drive the sprocket wheel 13 that saw chain 12 moves, saw chain 12 is carried out the guide plate 14 of support guide, cooperate cover plate 15 and the sprocket wheel strainer 16 of clamping guide plate 14 to prevent that it from rocking in its vertical direction with housing 11.
Need guide plate 14 be fixed on a suitable position on the housing 11 according to the abrasion condition of saw chain 12 for the ease of tensioning saw chain 12.
Please also refer to Fig. 3 and Fig. 4, the sprocket wheel strainer 16 in the present embodiment is arranged in the housing 11, and it comprises drive disk assembly 160, tensioning nut 161 and tensioning handwheel 162.
Described drive disk assembly 160 comprises power shaft 1600, first driving member 1601 that is connected with power shaft 1600 splines, reaches the output shaft 1603 that is connected with the second driving member spline with second driving member 1602 of first driving member, 1601 engagements in the present embodiment.In the present embodiment, first driving member 1601 and second driving member 1602 are bevel gear.
Tensioning handwheel 162 can be around being arranged in the groove 110 that forms on the housing 11 that self axis rotates, and tensioning handwheel 162 at least part of grooves 110 of described housing 11 that stretch out are not to have can to carry out manual adjustment from the outside of housing 11 under the independent instrument.For the ease of the installation of output shaft 1603, an one-body molded end that fitting recess 111, the second driving members 1602 splines of placing output shaft 1603 and second driving member 1602 are arranged is sleeved on output shaft 1603 also on the housing 11.
Connect tensioning nut 161 on the output shaft 1603, tensioning nut 161 is perpendicular to guide plate, tensioning nut 161 comprises internal thread connecting portion (figure is mark not) and guide plate connecting portion 1610, output shaft 1603 is provided with the external screw thread connecting portion 1604 that matches with tensioning nut 161, and tensioning nut 161 matches to realize that with external screw thread connecting portion 1604 on the output shaft 1603 it moves and locking function by its inner internal thread connecting portion that arranges.
Be appreciated that, also can be on output shaft 1603 spline be set with screw rod, screw rod can rotate along with the rotation of output shaft 1603 synchronously, described tensioning nut 161 is sleeved on the described screw rod, and matches to realize that by its inner internal thread connecting portion that arranges it moves and locking function with screw rod.Guide plate connecting portion 1610 is wholely set on the internal thread connecting portion and with guide plate 14 fixedlys connected, have the guide plate installing hole 140 that matches with guide plate connecting portion 1610 on the guide plate 14, guide plate connecting portion 1610 is contained in the guide plate installing hole 140 realizing being converted into the rectilinear motion of tensioning nut 161 and driving guide plate 14 by the rotation with output shaft 1603 and moves along longitudinally, thereby realizes the tensioning of saw chain 10.
Be appreciated that, drive disk assembly also can adopt the worm and gear structure, drive disk assembly comprises power shaft, worm gear, output shaft, power shaft one end links to each other with the tensioning handwheel, other end spline be set with worm gear, described output shaft is provided with and the helical tooth structure of worm wheel and the threaded joints that cooperates with tensioning nut.Thereby drive the rotation of output shaft by rotating the tensioning handwheel, thereby and the rectilinear motion drive guide plate that rotatablely moving of output shaft is converted into tensioning nut that cooperates by output shaft and tensioning nut move around along longitudinally.
Please refer to Fig. 5 and Fig. 6, also be provided with guide part 113 on the housing 11, guide plate 14 is provided with the pilot hole 141 of placing guide part 113, and the width of guide part 113 is identical with pilot hole 141, and the length of guide part 113 is less than the length of pilot hole 141.Guide part 113 can play the guiding role when longitudinally moves at guide plate 14 on the one hand, has strengthened the intensity of guide plate 14 on the other hand, and the up and down string of guide plate 12 in its plane is moving at work thereby reduce chain saw 10.
Please refer again to Fig. 1, chain saw 10 comprises that also is arranged on a knob 150 on the cover plate 15 and that have internal thread, cover plate 15 is positioned at a side of housing 11 installation saw chains 12 and links to each other with housing 11, also be provided with the bolt 114 for locking cover plate 15 on the housing 11, bolt 114 passes described pilot hole 141 and cooperatively interacts with the internal thread of knob 150, cover plate 15 can be screwed by rotation knob 150.Be appreciated that also and can screw rod be set at knob 150, have the screwed hole that cooperates with screw rod on the housing 11, also cover plate 15 can be installed on the housing 11 by screwing knob 150, and compress guide plate 14 and prevent that its direction at vertical guide plate 14 from rocking.
The operation principle of the chain saw strainer of present embodiment is: when the operator needs tensioning saw chain 12, at first unscrew knob 150 to loosen cover plate 15, rotate tensioning handwheel 162 to guide plate 14 tension direction, tensioning handwheel 162 drives power shaft 1600 and 1601 rotations of first driving member, first driving member 1601 drives 1602 rotations of second driving member, second driving member 1602 drives output shaft 1603 rotations, output shaft 1603 drives the tensioning nut 161 that revolves thereon and moves to the direction of tensioning saw chain 12, tensioning nut 161 drives guide plate 14 and moves to the direction away from sprocket wheel 13 on its longitudinally, thereby saw chain 12 is stretched on guide plate 14 and the sprocket wheel 13, plays the function of saw chain 12 quick tensionings.Otherwise when the operator need unclamp saw chain 12, unclamp direction to saw chain 12 and rotate handwheel 162, guide plate 14 with reverse before a series of transmissions under to the direction motion near sprocket wheel 13, the saw chain 12 of tensioning is released, can carry out saw chain and change and keep in repair, convenient and swift.
Because sprocket wheel strainer 16 integral body are arranged in the housing 11, in assembling process, at first guide plate 14 is realized its location in the vertical by cooperating between pilot hole 141 and the guide part 113, match with the guide plate connecting portion 1610 of locking nut 161 by guide plate installing hole 140 then guide plate 14 movably is installed on the housing 11, not needing cooperating between pilot hole 141 and the guide part 113 accurately, therefore the location in fact only needs accurate positioning guide plate installing hole 140 and the position of guide plate connecting portion 1610 to get final product, easy to assembly, and the time can be observed the position of tensioning nut 161 and guide part 113 in assembling, be convenient to the installation of guide plate 14 more.Then saw chain 12 is sleeved on the transmission support assembly of sprocket wheel 13 and guide plate 14 compositions, next by above-mentioned regulative mode by stirring tensioning handwheel 162 with saw chain 12 tensionings, by the knob 150 that arranges on the cover plate 15 cover plate 15 is screwed at last, and prevent that guide plate 14 from rocking on vertical its plane.Whole assembling process can be observed the location status of parts such as saw chain 12, guide plate 14, tensioning nut 161, sprocket wheel 13, and operation is accurate, and tensioning is quick, saves time, and compact appearance is attractive in appearance simultaneously.
Though the utility model discloses as above with preferred embodiments, so it is not in order to limit the utility model.Have in the technical field under the utility model and know the knowledgeable usually, in not breaking away from spirit and scope of the present utility model, when being used for a variety of modifications and variations.Therefore, protection domain of the present utility model is as the criterion when looking claims person of defining.
Claims (10)
1. chain saw, comprise housing, saw chain, by motor-driven and be bearing in the housing and can drive the sprocket wheel of saw chain motion, described saw chain is carried out the guide plate of support guide, cooperate the clamping guide plate to prevent the cover plate that it rocks in its vertical direction with housing, described chain saw also comprises the sprocket wheel strainer, described guide plate one end bearing is in described housing, the other end extends described housing along described housing longitudinally, it is characterized in that: described sprocket wheel strainer is installed on the housing, the sprocket wheel strainer comprises tensioning nut, drive disk assembly and tensioning handwheel, described drive disk assembly comprises the power shaft that is installed on the housing and can rotates relative to housing, first driving member by the power shaft drive, second driving member that cooperates with first driving member, output shaft by the drive of second driving member, described tensioning handwheel links to each other with the power shaft of drive disk assembly, and described tensioning handwheel is at least part of to stretch out described housing, described tensioning nut is fixedly connected with guide plate and be threaded with the output shaft of drive disk assembly so that tensioning nut can drive guide plate moves relative to output shaft, described power shaft is arranged in the plane parallel with guide plate, and the power shaft of described drive disk assembly and the angle between the output shaft are greater than 0 ° and less than 180 °.
2. chain saw according to claim 1, it is characterized in that: described first driving member and second driving member are bevel gear, and described first driving member is coplanar with the rotation of second driving member and parallel with guide plate.
3. chain saw according to claim 1, it is characterized in that: described first driving member is worm gear, described second driving member is the helical tooth structure that is formed on the output shaft.
4. according to any described chain saw in the claim 1～3, it is characterized in that: vertical mutually between the power shaft of described drive disk assembly and the output shaft.
5. chain saw according to claim 4, it is characterized in that: described output shaft is provided with the external thread structure that matches with tensioning nut, and tensioning nut matches to realize that with external thread structure on the output shaft it moves and locking function by its inner female thread structure that arranges.
6. chain saw according to claim 4, it is characterized in that: be set with to spline screw rod on the described output shaft, screw rod can rotate along with the rotation of output shaft synchronously, described tensioning nut is sleeved on the described screw rod, and matches to realize that with external thread structure on the screw rod it moves and locking function by its inner female thread structure that arranges.
7. according to any described chain saw in the claim 1～3, it is characterized in that: the one-body molded fitting recess that placement output shaft and second driving member are arranged on the described housing, described output shaft can be connected on the described output shaft to the described second driving member spline around being arranged in the fitting recess that self axis rotates.
8. according to any described chain saw in the claim 1～3, it is characterized in that: described tensioning nut is perpendicular to described guide plate, the guide plate connecting portion structure that described tensioning nut comprises the internal thread connecting portion that links to each other with output shaft and is used for matching with guide plate, described guide plate is provided with the guide plate installing hole that matches with guide plate connecting portion on the tensioning nut, described guide plate connecting portion is contained in the guide plate installing hole, so that tensioning nut can drive the movement of guide plate.
9. according to any described chain saw in the claim 1～3, it is characterized in that: be set with guide part on the described housing, described guide plate is provided with pilot hole, described guide part is contained in the pilot hole, the width of described guide part is identical with pilot hole, and the length of guide part is less than the length of pilot hole.
10. chain saw according to claim 9, it is characterized in that: also be provided with bolt on the described housing, described chain saw also comprises setting knob on the cover board, described knob is provided with internal thread, this bolt passes described pilot hole and knob cooperatively interacts, and cover plate can be tightened on the described guide plate by the rotation knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220663873 CN203136679U (en) | 2012-12-05 | 2012-12-05 | Chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220663873 CN203136679U (en) | 2012-12-05 | 2012-12-05 | Chain saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203136679U true CN203136679U (en) | 2013-08-21 |
Family
ID=48964255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220663873 Expired - Fee Related CN203136679U (en) | 2012-12-05 | 2012-12-05 | Chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203136679U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009438A (en) * | 2012-12-05 | 2013-04-03 | 南京德朔实业有限公司 | Chain saw |
| CN106671030A (en) * | 2016-12-28 | 2017-05-17 | 浙江亚特电器有限公司 | Multifunctional electric tool |
-
2012
- 2012-12-05 CN CN 201220663873 patent/CN203136679U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009438A (en) * | 2012-12-05 | 2013-04-03 | 南京德朔实业有限公司 | Chain saw |
| CN103009438B (en) * | 2012-12-05 | 2015-07-15 | 南京德朔实业有限公司 | Chain saw |
| CN106671030A (en) * | 2016-12-28 | 2017-05-17 | 浙江亚特电器有限公司 | Multifunctional electric 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20211205 |