CN201881006U - Handheld chain saw - Google Patents
Handheld chain saw Download PDFInfo
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- CN201881006U CN201881006U CN201020559567XU CN201020559567U CN201881006U CN 201881006 U CN201881006 U CN 201881006U CN 201020559567X U CN201020559567X U CN 201020559567XU CN 201020559567 U CN201020559567 U CN 201020559567U CN 201881006 U CN201881006 U CN 201881006U
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- chain
- saw
- friction
- housing
- chain saw
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Abstract
The utility model discloses a handheld chain saw. The handheld chain saw comprises a housing, a chain wheel arranged in the housing and used for driving a saw chain, and a chain plate used for guiding the motion of the saw chain, wherein, the chain plate extends out of the outer part of the housing in the longitudinal direction and can move in the longitudinal direction relative to the housing; the handheld chain saw comprises a saw chain tension device, wherein, the saw chain tension device comprises a force bearing piece arranged on the chain plate, a drive piece for driving the force bearing piece to enable the force bearing piece to drive the chain plate to move in the longitudinal direction, a rotating device for driving the drive piece, and a transmission device arranged between the rotating device and the drive piece; the transmission device comprises a clamping piece arranged on the rotating device, a rotating piece transmitting with the clamping piece in a unidirectional meshed manner, and a friction clutch device comprising a first friction piece and a second friction piece which are mutually sleeved; and the saw chain tension device can press the chain plate while tensioning the saw chain, can effectively prevent the tensioned chain plate from loosening, saves labor during operation, and has the advantages of high structural stability and low manufacturing cost.
Description
Technical field
The utility model relates to a kind of chain saw, especially a kind of hand-held type chain saw with chain tension adjusters.
Background technology
European patent application publication No. EP2036688A2 discloses that the singlehanded wheel of a kind of utilization carries out the tensioning saw chain and guide plate compresses, but needs the saw chain structure of another handwheel of reverse rotation when changing saw chain.This chain saw comprises that is rotatably supported in a sprocket wheel in the housing and saw chain that be used for being guided on carrier bar, a tension assembly that is used for the tensioning chain saw, this tension assembly comprises the arbor wheel mechanism that carrier bar is vertically moved, this arbor wheel mechanism is provided with the reverse rotation operation when being convenient for changing saw chain of leg that the surface has a rib, one side of this arbor wheel mechanism is provided with the helicla flute that is meshed with the carrier bar projection, so that thereby helicla flute promotes projection and moves and drive carrier bar and vertically move the tensioning saw chain to hull outside when rotating this arbor wheel mechanism, the relative spiral fluted opposite side of arbor wheel mechanism is provided with open tubular column, this open tubular column surface is centered on by an annular clutch part, the outer cover of this annular clutch part is provided with slip ring, this slip ring is rotated by a ring spring unidirectional drive, and the driving wheel that is provided with the key tooth cooperates with handwheel key tooth and is used for manually rotating and makes the drive wheel ring spring drive the slip ring rotation.Slip ring, annular clutch part and the mutual socket of open tubular column three, wherein annular clutch part in enclose face, peripheral surface and enclose the face friction engagement respectively with in open tubular column peripheral surface and the slip ring, thereby form the friction clutch mechanism that a cover transmits moment of torsion.When being rotated in the forward handwheel, utilized the characteristic of ring spring, thereby ring spring can be held slip ring tightly moment of torsion is passed to arbor wheel by friction clutch mechanism, and during the reverse rotation handwheel, ring spring is inoperative to slip ring, promptly can't make slip ring rotate transmit moment of torsion, need enclosing arm and could discharging saw chain of reverse rotation arbor wheel mechanism this moment.Because tensioning saw chain and replacing saw chain need be regulated different handwheels, tension structure complexity, inconvenient operation.
The utility model content
At the deficiencies in the prior art, the technical problems to be solved in the utility model provides a kind of hand-held type chain saw of saw chain tensioning rapid operation.
For solving the problems of the technologies described above, the technical solution of the utility model is achieved in that a kind of hand-held type chain saw, comprise housing, be arranged in the described housing and be used to drive the sprocket wheel of saw chain and one be the carrier bar of described saw chain motion guide, carrier bar extends longitudinally out described hull outside, and can vertically move by described relatively housing, this chain saw comprises a chain tension adjusters, wherein, chain tension adjusters comprises that one is arranged at the stressed member on the described carrier bar, with the driving link that drives described stressed member, thereby making stressed member drive carrier bar vertically moves, drive the tumbler of described driving link, and be arranged between tumbler and the driving link and be provided with transmission device, described transmission device comprises the shackle member that is arranged at tumbler, and with the tumbler of shackle member one way engagement transmission, and comprise first friction member of mutual socket and the friction engaging and disengaging gear of second friction member.
Described driving link is set to eccentric wheel, and described stressed member is arranged to mesh the retaining head that connects with the eccentric wheel cam surface.Described tumbler comprises a closing sleeve and a relative static handwheel with this closing sleeve, and described handwheel is provided with the butting section.Described transmission device further comprises pedestal, and described pedestal is provided with and connects eccentric connector, locking device and annular lip.Described chain saw further comprises the guard shield that is used to settle described tensioning apparatus and is used for closure casing, guard shield opening with profile of tooth end face is set on the described guard shield, and described locking device comprises with the profile of tooth end face can select profile of tooth part that meshes and the slope that connects with the handle butting section.
Described locking device is made by the material that can produce strain.
Described tumbler is arranged to pivoted housing, and the outer periphery of described pivoted housing is equipped with the oblique latch with the shackle member engagement.At least one friction member is provided with inside and outside surface in described first, second friction member, and this friction member only has a surface to be arranged to rubbing surface and another friction member produces friction.
The inner peripheral surface of described pivoted housing is arranged to rubbing surface, and described friction member with inside and outside surface is fixedly sleeved in the annular lip of pedestal, and the outer surface of described friction member is arranged to rubbing surface and the pivoted housing inner peripheral surface circumferentially meshes.
In another embodiment, described friction member with inside and outside surface is fixedly sleeved in pivoted housing, and the outer surface that the inner surface of this friction member is arranged to rubbing surface and annular lip circumferentially meshes.
Hand-held type chain saw of the present utility model has in the tensioning saw chain and compresses carrier bar, and rapid operation, good stability, manufacturing cost are relatively low.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is the partial front elevation view of chain saw after guard shield moves in the utility model.
Fig. 2 is the tensioning apparatus cutaway view of chain saw in the utility model.
Fig. 3 is the perspective exploded view of tensioning apparatus first state of chain saw in the utility model.
Fig. 4 is the perspective exploded view of tensioning apparatus second state of chain saw in the utility model.
Fig. 5 be in the utility model the frictional force arrangement of clutch overlook the direction schematic diagram.
Fig. 6 is the handwheel engagement rotary sleeve schematic perspective view of chain saw in the utility model.
Fig. 7 is the perspective exploded view of second kind of embodiment of the utility model chain saw tensioning device.
Wherein:
5 chain saw 19b mating part 155a slopes
6 housings, 27 rotary sleeves, 151 handwheels
7 sprocket wheel 27b inner peripheral surfaces, 152 closing sleeves
9 carrier bars, 29 stage clips, 153 central axis
10 friction engaging and disengaging gears, 31 pedestals, 160 screws
11 saw chains, 33 eccentric wheels, 161 torsion springs
13 guard shield 33a cam surfaces, 162 connectors
15 tumbler 33b through hole connecting portions, 273 oblique latches
16 shackle member, 35 briquettings, 300 annular lip
16a Access Division 36 back-up rings, 302 openings
310 perforates of 17 top boards, 37 bolts
17a perforate 37a external thread part 311 connectors
17b connecting hole 91 retaining 312 locking device
17c notch 93 elongated hole 312a slopes
18 screws, 131 guard shield opening 312b profile of tooth parts
19 C shape elastic components, 132 profile of tooth end faces, 313 connectors
19 ' annular element 152a internal thread part, 330 transmission mechanisms
The specific embodiment
With reference to shown in Figure 1, the chain saw 5 that the utility model specific embodiment relates to comprises a housing 6, sprocket wheel 7 rotating this housings 6 that are bearing in that are used for driving saw chain 11, wherein, this sprocket wheel 7 drives the rotation (not shown) by a transmission device by power set, and this Power Drive Unit can be set to motor or engine.This chain saw 5 also comprises a carrier bar 9, and these carrier bar 9 one end bearings are in housing 6, and the other end extends this housing 6 at these carrier bar 9 longitudinal directions, and saw chain 11 is set on described sprocket wheel 7 and the carrier bar 9, and can being directed along this carrier bar 9 edges circulation.In order to regulate the tension force of saw chain 11, this carrier bar 9 can move relative to described housing 6 along these carrier bar 9 longitudinal extension directions, makes gap variable size between this carrier bar 9 and the sprocket wheel 7, thereby makes described saw chain 11 to be tensioned or lax.
With further reference to Fig. 2, Fig. 3 and Fig. 4, one that is fixed on the housing 6 for tensioning saw chain 11 and with carrier bar 9 is suitable for adjusting on the position of saw chain 11 tensile forces, this chain saw 5 is provided with a chain tension adjusters, and this tensioning apparatus is placed in a guard shield 13 that is used for closure casing 6.Wherein, this tensioning apparatus comprises one near the tumblers 15 that carrier bar 9 is provided with and 33, one of movable eccentric wheels are controlled and driving eccentric wheel 33 moves, and transmission mechanism 330, and wherein transmission mechanism comprises friction engaging and disengaging gear 10; The cam surface 33a of eccentric wheel 33 abuts against a retaining that is fixedly connected on carrier bar 9 91, when operation tumbler 15 rotates described eccentric wheel 33, this eccentric wheel 33 is against described retaining 91 and to promote retaining 91 mobile towards housing 6 outside along described carrier bar 9 longitudinal extension directions, described immediately retaining 91 a drive carrier bar 9 move towards leaving housing 6 directions along carrier bar 9 longitudinal extension directions, make carrier bar 9 away from sprocket wheel 7, thus the described saw chain 11 of tensioning.Wherein eccentric wheel 33 can be configured to other forms such as worm gear, gear, the worm screw that described retaining 91 also can be configured to cooperate with worm gear, gear, tooth bar etc. move relative to described housing 6 along these carrier bar 9 longitudinal extension directions as long as can make described tumbler 15 order about described carrier bar 9 by transmission device.
In the utility model preferred forms, tumbler 15 comprise a closing sleeve 152 with one with these closing sleeve 152 relative static handwheels 151, described closing sleeve 152 has a central axis 153, described friction engaging and disengaging gear 10 is coupled on the closing sleeve 152 with eccentric wheel 33, and eccentric wheel 33 turning cylinder center lines are coaxial with closing sleeve 152 central axis 153.Closing sleeve 152 inside have internal thread part 152a, housing 6 is provided with bolt 37, bolt 37 is provided with external thread part 37a, housing 6 is fixed in the one end, vertical this housing 6 of the other end stretches out and passes and is arranged at the elongated hole 93 of carrier bar 9 along carrier bar 9 longitudinal extensions, closing sleeve 152 connects by its internal thread part 152a and bolt 37 external thread part 37a engagement, and closing sleeve 152 relative carrier bars 9 vertically are provided with.Wherein, closing sleeve 152 is being provided with briquetting 35 near carrier bar 9 one ends, this briquetting 35 is used for carrying out spacing to eccentric wheel 33 between friction engaging and disengaging gear 10 and carrier bar 9, and after saw chain 11 tensionings, carrier bar 9 is compressed to keep the rate of tension of saw chain 11, make in the course of the work, saw chain 11 can not relax because of the vibrations of chain saw 5, and the user is caused danger.Simultaneously, also be fixed with back-up ring 36 near on the end of briquetting 35 on the closing sleeve 152, this back-up ring 36 is used for spacing described briquetting 35, deviates from from this closing sleeve 152 to prevent this briquetting 35, guarantees stability of structure.The other end of closing sleeve 152 is surrounded by relative closing sleeve 152 static handwheels 151, operates this closing sleeve 152 for the convenience of the user, and closing sleeve 152 and handwheel 151 chimeric connecting drive closing sleeve 152 when guaranteeing handwheel 151 rotations and move together.In addition, be provided with the leg 155 of circumferential setting in the inboard of handwheel 151, the terminal part of described leg 155 forms slope 155a.
The closing sleeve 152 of tumbler 15 passes on the guard shield 13 the guard shield opening 131 with the circle of closing sleeve 152 coaxial settings, and handwheel 151 and these guard shield opening 131 form fit, make the leg 155 of handwheel 151 embed in the described guard shield opening 131, the housing section of handwheel 151 protrudes in the outside of guard shield 13, in addition, the bottom of this guard shield opening 131 is provided with the profile of tooth end face 132 that circumferentially is provided with along guard shield opening 131.When being rotated in the forward tumbler 15, handwheel 151 drives closing sleeve 152 and rotates relative to guard shield 13, can carry out the operation of tensioning saw chain easily by transmission mechanism 330, friction engaging and disengaging gear 10 and eccentric wheel 33.Herein indication be rotated in the forward relative reverse rotation, be rotated in the forward the positive hour hands direction of rotation that is often referred to tumbler 15 relative chain saw housings 6, on the contrary, reverse rotation is often referred to the direction that is rotated counterclockwise of tumbler 15 relative chain saw housings 6; Certainly those skilled in the art also can do opposite understanding with above-mentioned forward and reverse rotation.
As shown in Figure 3, Figure 4, described friction engaging and disengaging gear 10 comprises pedestal 31, rotary sleeve 27, C shape friction member 19, stage clip 29; Wherein, pedestal 31 is being provided with connector 313 near described eccentric wheel 33 1 sides, this connector 313 and pedestal 31 are configured to one, and cooperate the through hole connecting portion 33b on the described eccentric wheel 33 to connect described eccentric wheel 33, after making that connector 313 connects described eccentric wheel 33, eccentric wheel 33 can keep relative static with connector 313.One side end face of the described dorsad eccentric wheel 33 of pedestal 31 is provided with the annular lip 300 of extending to rotation hand wheel 151 directions, the outer surface of annular lip 300 offers opening 302, annular lip 300 inboards are provided with at least one connector 311, in the utility model preferred forms, this pedestal 31 is provided with three connectors 311 altogether, and each connector 311 all is configured to a cannulated threaded post.C shape friction member 19 outer surfaces are arranged to rubbing surface, two inside kink 19a of terminal formation that the opening part of C shape friction member 19 is adjacent, C shape friction member 19 is sheathed on the outer surface of pedestal 31 annular lip 300, and two relative kink 19a are engaged in respectively in the opening 302 on annular lip 310 surfaces on the C shape friction member 19, thereby make that C shape friction member 19 relative pedestals 31 are fixedly connected; Rotary sleeve 27 is provided with top board 17, the outer circumference surface of rotary sleeve 27 is provided with oblique latch 273, the outer surface engagement that the inner peripheral surface 27b of rotary sleeve 27 is arranged to rubbing surface and C shape friction member 19 produces tangent direction friction power, and rotary sleeve 27 just forms friction pair with C shape friction member 19 like this.Top board 17 passes the connecting hole 17b that is provided with on it and cooperates with connector 311 by screw 18, thereby C shape friction member 19 is contained between rotary sleeve 27 and the pedestal 31.Stage clip 29 is sheathed on the closing sleeve 152, the top board 17 of one end bias voltage rotary sleeve 27, and other end bias voltage handwheel 151 produces certain axial displacement thereby make friction engaging and disengaging gear 10 can overcome the relative closing sleeve 152 of stage clip 29 active forces along central axis 153.Be equipped with the perforate 17a coaxial on pedestal 31, the top board 17, can make closing sleeve 152 pass pressing plate 17 perforate 17a and pedestal 31 perforates 310 backs are connected with bolt 37 with the central axis 153 of closing sleeve 152.
With reference to shown in Figure 5, the main part of pedestal 31 is provided with the locking device 312 that a plurality of edges circumferentially evenly are provided with, locking device 312 quantity are provided with three in the present embodiment, the slope 312a that protrudes to handwheel 151 directions all is set on each locking device 312, and this slope 312a selectively compresses with the slope 155a that is arranged at handwheel 151 legs 155 and connects; In addition, the same side of each slope 312a is provided with profile of tooth part 312b, this profile of tooth part 312b selectively connects with profile of tooth end face 132 engagements that are arranged at guard shield opening 131, profile of tooth part 312b quantity in the present embodiment is provided with two, is arranged at that the profile of tooth part 312b of pedestal 31 and leg 155 made by the material that can produce strain.
As shown in Figure 3, Figure 4, carry out tensioning and carrier bar 9 is pressed in housing 6 for driving 10 pairs of saw chains of friction engaging and disengaging gear 11 easily when being rotated in the forward handwheel 151, and when the lax described saw chain 11 of reverse rotation handwheel 151, need not overcome stronger frictional force, transmission mechanism 330 is arranged to one-way driving mechanism.Handwheel 151 inboards are connected with at least one shackle member 16 by screw 160, shackle member 16 in the present embodiment is provided with three, this shackle member 16 is provided with Access Division 16a and is used for and rotary sleeve 27 peripheral tiltedly latch 273 one way engagement, for shackle member 16 being connected in handwheel 151 medial surfaces, at handwheel 151 medial surfaces corresponding connector 162 is set, shackle member 16 is connected on the connector 162 by screw 160, wherein be provided with torsion spring 161 between connector 162 and the shackle member 16, this torsion spring 161 can be given elastic force towards handwheel 151 centers of Access Division 16a of described shackle member 16, make when handwheel 151 connects described friction engaging and disengaging gear 10, the Access Division 16a of this shackle member 16 can mesh with the oblique latch 273 unidirectional clampings of described rotary sleeve 27 peripheries, thereby between tumbler 15 and friction engaging and disengaging gear 10, form unidirectional transmission, be 273 rotations of the oblique latch of shackle member 16 unidirectional drives, and shackle member 16 is with motionless oblique latch 273 rotations during reverse rotation.This unidirectional transmission makes that when being rotated in the forward described tumbler 15 handwheel 151 drives this shackle member 16 rotations, and shackle member 16 drives described rotary sleeve 27 rotations.Utilize the friction force between C shape friction member 19 corrugated outer walls and the rotary sleeve 27 inner peripheral surface 27b, rotary sleeve 27 drives 19 rotations of C shape friction member, because C shape friction member 19 relative pedestals 31 fixedly install, therefore C shape friction member 19 drives pedestal 31 rotations, thereby make eccentric wheel 33 rotations that are coupled to pedestal 31 connectors 313, eccentric wheel 33 makes retaining 91 drive carrier bars 9 against described retaining 91 and moves towards leaving housing 6 directions along carrier bar 9 longitudinal extension directions, thereby carrier bar 9 is away from sprocket wheel 7 tensioning saw chains 11.When changing saw chain 11, reverse rotation tumbler 15, the Access Division 16a of shackle member 16 is creeped on this oblique latch 273, rotary sleeve 27 keeps static and the 152 continuation reverse rotations of handwheel 151 drive closing sleeves at this moment, when closing sleeve 152 unclamps and breaks away from and be arranged at the engagement of the bolt 37 of housing 6, this moment can be with guard shield 13 together with tensioning apparatus from chain saw 5 dismountings.
By adopting said structure, saw chain 11 tensionings of the utility model chain saw 5 and carrier bar 9 compress and are achieved in that when the user takes chain saw 5 and needs tensioning saw chain 11, the guard shield 13 that at first will be connected with tumbler 15 is buckled in the relevant position on the described housing 6, closing sleeve 152 and the bolt 37 that is arranged at housing 6 and passes carrier bar 9 elongated holes 93 are connected, the forward rotation handwheel 151 again, making handwheel 151 drive described closing sleeve 152 threaded engagement also relative carrier bar 9 on described bolt 37 moves axially, meanwhile, this handwheel 151 cooperates by the shackle member 16 Access Division 16a of connection on it and the oblique latch 273 of rotary sleeve 27 peripheries, driven rotary cover 27 rotates synchronously, make rotary sleeve 27 by and C shape friction member 19 between friction drive C shape friction member 19 and rotate synchronously with pedestal 31, pedestal 31 drives eccentric wheel 33 rotation synchronously and the effect carrier bar 9 that connect on it and vertically moves, saw chain 11 beginning tensionings.At this moment, the tensile force of saw chain 11 is less than the frictional force of friction engaging and disengaging gear 10 generations that set in advance in factory.Be rotated further handwheel 151, when saw chain 11 tensionings have reached behind the optimum tensile force that factory sets in advance, saw chain 11 tensionings are finished.At this moment, the tensile force of saw chain 11 forms a binding force to the reaction force of carrier bar 9, this binding force by the retaining that is provided with on the carrier bar 9 91 be delivered to this retaining 91 eccentric wheel that cooperate 33 on, and further be delivered on the friction engaging and disengaging gear 10 that is arranged between eccentric wheel 33 and the tumbler 15.After saw chain 11 is finished tensioning, this reaction force size has surpassed above-mentioned friction clutch power, continue rotation hand wheel 151, friction clutch 10 is influenced the reaction force that eccentric wheel 33 produces by tensile force, carries out clutch, in the present embodiment, skid between pivoted housing 27 inner peripheral surface 27b and C shape friction member 19 outer walls, thereby make pedestal 31 stop operating, eccentric wheel 33 keeps static, and saw chain 11 rates of tension remain unchanged.Handwheel 151 continues rotation and thereby the briquetting 35 that drives closing sleeve 152 and be connected in closing sleeve 152 continues to move to carrier bar 9 directions and compresses carrier bar 9.Under the effect of thrust, the slope 155a of side enclosure wall 155 is meshing with each other and mutual extrusion in slope 312a on the locking device 312 and the handwheel 151, cause locking device 312 radially outward to produce strain, and profile of tooth part 312b just in time is being meshed with the profile of tooth end face 132 that is arranged at guard shield opening 131 in the radial direction, thereby form another ratchet device, promptly when handwheel 151 rotates to tensioning carrier bar 11 and compresses the state of carrier bar 11, friction engaging and disengaging gear 10 just automatically is locked together with guard shield 13, thereby has guaranteed that carrier bar 9 can not get loose in the course of the work.
It is to be noted, above-mentioned chain tension adjusters is in the tensioning process, the operator carries out blind dress, and promptly the operator only needs the closing sleeve 152 of tumbler 15 is threadedly connected on the bolt 37, and need not with the cam surface 33a of eccentric wheel 33 with keep off 91 and aim at.Because retaining 91 puts in place even without contacting with the cam surface 33a of eccentric wheel 33 in installation process, may just contact with the end face of eccentric wheel 33, but when closing sleeve 152 is threadedly connected to bolt 37, stage clip 29 can produce elastic compression to handwheel 151 directions, as long as handwheel 151 drives closing sleeve 152 relative bolt 37 rotations, eccentric wheel 33 just produces corresponding the rotation thereupon, when the cam surface 33a of eccentric wheel 33 turn to keep off 91 be meshed the position time, under stage clip 29 active forces, friction engaging and disengaging gear 10 153 produces the displacement away from handwheel 151 directions in closing sleeve 152 along central axis, and eccentric wheel 33 cam surface 33a can mesh automatically with retaining 91 and put in place this moment.Adopt this mounting means, the job step that need aim at when having saved saw chain 11 tensionings has improved operating efficiency widely.
And when needs more during saw chain, reverse rotation tumbler 15 drives closing sleeve 152 produces relative compaction direction on bolt 37 displacement, make the slope 155a and the slope 312a on the locking device 312 of handwheel 151 interior side enclosure wall 155 throw off engagement, locking device 312 recovers strain, the engagement of the profile of tooth end face 132 of automatic disengagement of the profile of tooth part 312b on the locking device 312 at this moment and guard shield opening 131, promptly anti-loose structure has automatically terminated locking; Continue backward rotation handwheel 151 this moment, break away from the bolt 37 that is arranged at housing 6 until closing sleeve 152, this moment, guard shield 13 can shirk from chain saw 5 together with tensioning apparatus.
Friction engaging and disengaging gear 10 is the revolving joints that are arranged between this tumbler 15 and the eccentric wheel 33, because the annular lip 300 of C shape friction member 19 relative pedestals 31 is fixedly connected, thereby make friction engaging and disengaging gear 10 produce the tensioning that friction clutch power realizes saw chain 11 by C shape friction member 19 and rotary sleeve 27 single faces, this friction member structure requirement on machining accuracy that utilizes C shape friction member 19 single faces to produce friction clutch power is low, convenient processing and manufacturing, consequent manufacturing cost also reduces greatly.When making in factory in advance corresponding to saw chain 11 required best saw chain tension force, friction engaging and disengaging gear 10 required friction clutch power just adjust, feel irrelevant with user's individual, therefore, friction engaging and disengaging gear 10 can guarantee that saw chain 11 always has identical saw chain tensile force after having operated the saw chain tensioning.
With reference to shown in Figure 7, be second kind of embodiment of the present utility model, in order to express easily, the structure identical with first embodiment adopts identical numbering to represent, do not give unnecessary details herein.In the present embodiment, annular friction spare 19 ' institute has replaced C shape friction member 19, offer notch 17c on the top board 17 of pivoted housing 27, the peripheral wall of annular friction spare 19 ' is provided with the mating part 19b with notch 17c engagement, makes that by notch 17c and the engagement of mating part 19b the relative pivoted housing of annular friction spare 19 ' 27 is fixedly connected.Annular friction spare 19 ' is sheathed on pedestal 31 annular lip 300, make and produce tangent direction friction power between the inner surface of annular friction spare 19 ' of friction engaging and disengaging gear 10 ' and annular lip 300 outer surfaces, be that annular friction spare 19 ' forms a friction pair with pedestal annular lip 300, annular friction spare wherein 19 ' can be made by corrugated steel, also available working of plastics or other material are made, annular friction spare 19 ' inner surface be arranged to that corrugated helps designing and annular lip 300 between frictional force.Certainly, the best frictional force of friction engaging and disengaging gear 10 ' be design in advance according to the required tensile force of saw chain tensioning fixed.
Certainly, those skilled in the art it is also contemplated that the structure of the friction engaging and disengaging gear in the utility model 10 is done some changes, the kink 19a that C shape friction member 19 in for example can first embodiment extends internally is arranged to outward extending kink, rotary sleeve 27 is provided with corresponding mating part, thereby by kink and being connected of mating part the C shape friction member 19 and the position of rotary sleeve 27 being fixed, C shape friction member 19 madial walls and pedestal 31 annular lip 300 outer surfaces produce single-sided friction like this.The rubbing surface of C shape friction member 19 can also be arranged to shiny surface or other form has the surface except being arranged to the corrugated male and fomale(M﹠F).Can be integrally formed with the annular friction spare 19 ' among second embodiment with pivoted housing 27, rubbing surface is set perhaps direct inner peripheral surface 27b with pivoted housing 27 and annular lip 300 surface generation single-sided friction are used for the transmission tensioning.
Claims (10)
1. hand-held type chain saw comprises:
Housing;
Be arranged in the housing and be used to drive the sprocket wheel of saw chain;
Be the carrier bar of described saw chain motion guide, described carrier bar extends longitudinally out described hull outside, and can be relative
Described housing vertically moves;
And chain tension adjusters, described chain tension adjusters comprises the stressed member that is arranged at carrier bar, drive described stressed member and drive the driving link that carrier bar vertically moves, drive the tumbler of described driving link, and be arranged between tumbler and the driving link and be provided with transmission device;
It is characterized in that: described transmission device comprises the shackle member that is arranged at tumbler, with the tumbler of shackle member one way engagement transmission, and comprises first friction member of mutual socket and the friction engaging and disengaging gear of second friction member.
2. hand-held type chain saw according to claim 1 is characterized in that: described driving link is set to eccentric wheel, and described stressed member is arranged to mesh the retaining head that connects with the eccentric wheel cam surface.
3. hand-held type chain saw according to claim 1 is characterized in that: described tumbler comprises a closing sleeve and a relative static handwheel with this closing sleeve, and described handwheel is provided with the butting section.
4. hand-held type chain saw according to claim 1 is characterized in that: described transmission device further comprises pedestal, and described pedestal is provided with and connects eccentric connector, locking device and annular lip.
5. hand-held type chain saw according to claim 1, it is characterized in that: described chain saw further comprises the guard shield that is used to settle described tensioning apparatus and is used for closure casing, guard shield opening with profile of tooth end face is set on the described guard shield, and described locking device comprises with the profile of tooth end face can select profile of tooth part that meshes and the slope that connects with the handle butting section.
6. hand-held type chain saw according to claim 5 is characterized in that: described locking device is made by the material that can produce strain.
7. hand-held type chain saw according to claim 5 is characterized in that: described tumbler is arranged to pivoted housing, and the outer periphery of described pivoted housing is equipped with the oblique latch with the shackle member engagement.
8. hand-held type chain saw according to claim 7 is characterized in that: at least one friction member is provided with inside and outside surface in described first, second friction member, wherein only has a surface to be arranged to rubbing surface and another friction member generation friction.
9. hand-held type chain saw according to claim 8, it is characterized in that: the inner peripheral surface of described pivoted housing is arranged to rubbing surface, described friction member with inside and outside surface is fixedly sleeved on the annular lip of pedestal, and described outer surface with the friction member on inside and outside surface is arranged to rubbing surface and the pivoted housing inner peripheral surface circumferentially meshes.
10. hand-held type chain saw according to claim 7 is characterized in that: described friction member with inside and outside surface is fixedly sleeved in pivoted housing, and the outer surface that the inner surface of annular friction spare is arranged to rubbing surface and annular lip circumferentially meshes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020559567XU CN201881006U (en) | 2010-09-29 | 2010-09-29 | Handheld chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020559567XU CN201881006U (en) | 2010-09-29 | 2010-09-29 | Handheld chain saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201881006U true CN201881006U (en) | 2011-06-29 |
Family
ID=44178534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020559567XU Expired - Lifetime CN201881006U (en) | 2010-09-29 | 2010-09-29 | Handheld chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201881006U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012041192A1 (en) * | 2010-09-29 | 2012-04-05 | 苏州宝时得电动工具有限公司 | Chain saw |
| CN102430811A (en) * | 2010-09-29 | 2012-05-02 | 苏州宝时得电动工具有限公司 | Handheld chain saw |
| CN109870797A (en) * | 2019-04-19 | 2019-06-11 | 上海熠达光电科技有限公司 | Cohesion device and endoscope electric booster system |
| CN109870797B (en) * | 2019-04-19 | 2024-04-30 | 上海熠达光电科技有限公司 | Enclasping device and endoscope electric power assisting system |
-
2010
- 2010-09-29 CN CN201020559567XU patent/CN201881006U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012041192A1 (en) * | 2010-09-29 | 2012-04-05 | 苏州宝时得电动工具有限公司 | Chain saw |
| CN102430811A (en) * | 2010-09-29 | 2012-05-02 | 苏州宝时得电动工具有限公司 | Handheld chain saw |
| CN102430811B (en) * | 2010-09-29 | 2013-10-16 | 苏州宝时得电动工具有限公司 | Handheld chain saw |
| CN109870797A (en) * | 2019-04-19 | 2019-06-11 | 上海熠达光电科技有限公司 | Cohesion device and endoscope electric booster system |
| CN109870797B (en) * | 2019-04-19 | 2024-04-30 | 上海熠达光电科技有限公司 | Enclasping device and endoscope electric power assisting system |
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