CN106476083A - A kind of hand saw - Google Patents

A kind of hand saw Download PDF

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Publication number
CN106476083A
CN106476083A CN201510538234.6A CN201510538234A CN106476083A CN 106476083 A CN106476083 A CN 106476083A CN 201510538234 A CN201510538234 A CN 201510538234A CN 106476083 A CN106476083 A CN 106476083A
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CN
China
Prior art keywords
latch segment
positioning disk
working plate
assembly
stopper slot
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Granted
Application number
CN201510538234.6A
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Chinese (zh)
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CN106476083B (en
Inventor
熊泰原
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Foshan V-Plus Machinery Co Ltd
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Foshan V-Plus Machinery Co Ltd
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Priority to CN201510538234.6A priority Critical patent/CN106476083B/en
Publication of CN106476083A publication Critical patent/CN106476083A/en
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Publication of CN106476083B publication Critical patent/CN106476083B/en
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Abstract

The invention provides a kind of hand saw, including working plate assembly and saw blade assembly it is characterised in that being provided with the rotary apparatuss that working plate assembly can be made to rotate below described working plate assembly.The present invention achieves the rotation of working plate assembly by setting rotary apparatuss between cradle and working plate assembly, and the positioning to working plate assembly and the automatic positioning function to special angle are achieved by locking device and angle positioning device, there is prominent substantive distinguishing features and marked improvement.

Description

A kind of hand saw
Technical field
The present invention relates to timber processing technique field, more particularly, to a kind of hand saw.
Background technology
Existing hand saw generally comprises cradle, as the working plate assembly on cradle and saw blade assembly and nose assembly, wherein said nose assembly is, with working plate assembly, the mode of being fixedly connected, This structure is extremely inconvenient when using, such as it is impossible to fast and flexible switches angle needed for cutting.
In order to solve above-mentioned technical problem, market exists a kind of carpenter's hand saw, this hand saw includes work platformses, a backup plate, a platen and a head unit, this work platforms, be placed in this work table top;This backup plate, laterally stands in the middle of this work platforms;This platen, frame high setting is above this work platforms, and this platen is connected on this backup plate;And this head unit, it is installed in this work table top rear, this head unit includes a seat of honour, one is assembled in the vertical pole above this seat of honour, the one worm screw group being assembled in this seat of honour side, one is laterally assembled in the head on this vertical pole, and saw blades groups being assembled in this head front end, this saw blades groups can slippingly be assembled on this head in front and back, when this saw blades groups is along this back-end of machine head displacement, one saw blade of this saw blades groups is on this platen towards this backup plate displacement, so that sawing-like motion is executed to a workpiece, and the center of this head, the hub head end of this platen and the center of this backup plate all fall within same datum mark.Rotary apparatuss are arranged at below head by this hand saw, its complex structure, and need when head rotates to drive saw blade to produce very big pendulum angle, are unfavorable for the setting of work platformses.
Content of the invention
The present invention is at least one defect overcoming described in above-mentioned prior art, provides a kind of hand saw being capable of flexible adaptation difference cutting angle.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of hand saw, including working plate assembly and saw blade assembly, is provided with the rotary apparatuss that working plate assembly can be made to rotate below described working plate assembly.
Described hand saw also includes the cradle in order to support working plate assembly, and described rotary apparatuss include the rotary shaft being arranged on cradle and can rotating, and described rotary shaft is fixedly connected with described working plate assembly.
Positioning disk is arranged with described rotary shaft, positioning disk is directly or indirectly fixed on cradle.
Described positioning disk is provided with to limit the stopping means of described working plate assembly rotation amplitude.
Described stopping means are the first stopper slot and/or the second stopper slot on positioning disk, and described working plate assembly is provided with can be with the first spacing bar assembly of the first stopper slot cooperation and/or the second spacing bar assembly that can coordinate with the second stopper slot.
It is provided with the locking device that can stop positioning disk and rotary shaft relative motion between described positioning disk and rotary shaft.
It is provided with positioning disk through hole in the middle part of described positioning disk, described rotary shaft top is provided with protruding shaft, described positioning disk sleeve is located in protruding shaft, described locking device is between positioning disk and protruding shaft, described locking device include screw rod and between positioning disk and protruding shaft the first latch segment and the second latch segment, described first latch segment is connected with screw flight, second latch segment is connected with screw limiting, at least there are two kinds of operating positions in screw rod rotation process, in the first operating position, described first latch segment and/or the second latch segment extrude rotary shaft and positioning disk and produce the power hindering rotary shaft and positioning disk relative motion, in the second operating position, described first latch segment and the second latch segment cannot produce the power enough to hinder rotary shaft and positioning disk relative motion.
It is connected by the first latch segment hinge pin between described first latch segment and screw rod, it is connected by the second latch segment hinge pin between second latch segment and screw rod, described second latch segment hinge pin is provided with stopper slot or spacing hole and is set on screw rod by stopper slot or spacing hole, on described screw rod, the second latch segment hinge pin be respectively provided on two sides with first collar and second collar.
Described positioning disk is provided with angle location hole, and described screw rod is additionally provided with the angle positioning device with the cooperation of angle location hole.
Described angle positioning device includes the set pull bar being set on described screw rod, one end of set pull bar is provided with lifting slide block, alignment pin with the cooperation of described angle location hole is embedded with lifting slide block, the other end of set pull bar is provided with being capable of the traction apparatuss that move horizontally of traction casing pull bar.
Described traction apparatuss include connecting rod, spanner and back-moving spring, described connecting rod one end is directly or indirectly hinged with described set pull bar, the other end is hinged with described spanner, described spanner and described working plate member hinges, described back-moving spring is placed on pull bar and is located between set pull bar and rod hinge connection position and spanner articulated position.
Described set pull bar is provided with positive stop, and it is hinged that described connecting rod and described set pull bar pass through positive stop.
It is provided with ejector pin seat above described alignment pin, between ejector pin seat and alignment pin, be provided with elastic device.
Described rotary shaft is torque-transmitting axle.
It is provided with plane needle bearing between eccentric shaft and cradle and between torque-transmitting axle and positioning disk.
Described positioning disk is provided with angle graduated scale.
Described working plate assembly includes pivot angle platform, the working plate above pivot angle platform and is located at the left backup plate on pivot angle platform and right backup plate, described first spacing bar assembly is on left backup plate, second spacing bar assembly is on right backup plate, described first stopper slot and the second stopper slot are set to when the first spacing bar assembly and the second spacing bar assembly are when moving along the first stopper slot and the second stopper slot, and the air line distance of the first spacing bar assembly and the second spacing bar assembly changes.
The present invention achieves the rotation of working plate assembly by setting rotary apparatuss between cradle and working plate assembly, the present invention changes the mode of original nose assembly rotation, change to rotate working plate assembly, avoid nose assembly and rotarily drive working plate assembly and produce the problem of wide-angle so that working plate assembly can more be flexibly adapted to different cutting angles.In addition the present invention achieves the positioning to working plate assembly and the fast positioning function to special angle also by locking device and angle positioning device, has prominent substantive distinguishing features and marked improvement.
Brief description
Fig. 1 is the structural representation of working plate assembly of the present invention and saw blade assembly;
Fig. 2 is the explosive view of rotary apparatuss of the present invention and locking device;
Fig. 3 is latch segment of the present invention and the structural representation of locking hinge pin axle;
Fig. 4 is locking device of the present invention structural representation in the locked condition;
Fig. 5 is the enlarged drawing of I part in Fig. 4;
Fig. 6 is locking device of the present invention structural representation in a relaxed state;
Fig. 7 is the enlarged drawing of II part in Fig. 6;
Fig. 8 is the sectional view of rotary apparatuss of the present invention and locking device;
Fig. 9 is the structural representation under angle positioning device positioning states of the present invention;
Figure 10 is the enlarged drawing of III part in Fig. 9;
Figure 11 is the structural representation that angle positioning device of the present invention releases under positioning states;
Figure 12 is the enlarged drawing of IV part in Figure 11;
Figure 13 is the structural representation that the present invention lifts slide block;
Figure 14 is alignment pin of the present invention and the structural representation of ejector pin seat;
Figure 15 is the structural representation of working plate assembly of the present invention;
Figure 16 is the enlarged drawing of Figure 15 part-structure;
Figure 17 is the schematic diagram of working plate assembly different rotation angle of the present invention;
Figure 18 is positioning disk of the present invention and left backup plate and right backup plate matching relationship schematic diagram;
Figure 19 is positioning disk top view of the present invention;
Figure 20 is left backup plate, the function relation figure of right backup plate spacing.
Working plate assembly 100, pivot angle platform 101, working plate 102, left backup plate 103, right backup plate 104, reinforcement 105, the first spacing bar assembly 106, the second spacing bar assembly 107, the body of rod 108, spacer 109, bearing 110, backup plate stopper slot 111, backup plate spacer 112
Saw blade assembly 200, installing plate 201, motor 202, saw blade 203, guide runner 204
Nose assembly 300, guide rail 301
Rotary apparatuss 400、Cradle 401、Eccentric shaft 402、Positioning disk 403、First plane needle bearing 404、Second plane needle bearing 405、Protruding shaft 406、First support platform 407、Second support platform 408、Outer toroid 409、Interior annular 410、Positioning disk hole 411、First stopper slot 412、Second stopper slot 413、First stop face 414、Second stop face 415、Screw rod 416、First latch segment 417、Second latch segment 418、First latch segment hinge pin 419、Second latch segment hinge pin 420、First collar 421 and second collar 422、Screwed hole 423、First jointed shaft 424、First through hole 425、Groove 427、Second jointed shaft 428、Second through hole 429、Set pull bar 433、Lifting slide block 434、Alignment pin 435、0 degree of location hole 426、45 degree of location holes 436、Angle graduated scale 437、Amplify microscope base 438、Magnifier 439、The first side wall 440、Second sidewall 441、Connecting plate 442、Low supporting surface 443、High supporting surface 444、Inclined-plane 445、Access Division 446、Bearing pin 447、Ejector pin seat 448、Spring 449、Connecting rod 450、Spanner 451、Back-moving spring 452、Positive stop 453、Connector 454.
Specific embodiment
Being for illustration only property of accompanying drawing illustrates it is impossible to be interpreted as the restriction to this patent;In order to the present embodiment is more preferably described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product;To those skilled in the art, in accompanying drawing, some known features and its explanation may be omitted and be will be understood by.Described in accompanying drawing, being for illustration only property of position relationship illustrates it is impossible to be interpreted as the restriction to this patent.Annexation described by this patent should do broadest understanding, and this annexation includes being directly connected between part and part, also includes being indirectly connected with, and so-called is indirectly connected with referring to be attached by miscellaneous part between two parts.
Embodiment 1
As shown in Figure 1, hand saw of the present invention includes cradle, as the working plate assembly 100 on cradle and saw blade assembly 200 and nose assembly 300, wherein cradle is mainly in order to support working plate assembly 100, therefore, the version of cradle can be variation, such as, can be tabular pedestal, can also be supporting structure, as long as support can be played acting on.Described saw blade assembly 200 is arranged on nose assembly 300, nose assembly 300 is provided with guide rail 301, saw blade assembly 200 includes installing version 201, motor 202 and saw blade 203 are provided with installing plate 201, the rotating shaft of motor 202 and saw blade 203 are in transmission connection, this is in transmission connection including being directly connected between motor 202 and saw blade 203 and is indirectly connected with, such as, motor passes through gear or chain tradition drives saw blade 203 to rotate, it is additionally provided with guide runner 204 on described installing plate 201, guide runner 204 is set on guide rail 301 so that saw blade assembly 200 can be mobile along guide rail 301.All using prior art, here is not repeated to describe the miscellaneous part of saw blade assembly 200 and nose assembly 300.
As shown in Fig. 2,15,16, working plate assembly 100 of the present invention includes pivot angle platform 101, working plate 102 and left backup plate 103, right backup plate 104.
Described pivot angle platform 101 is support body frame structure, in order to increase its load bearing stength, it is preferably metal material to make, it is provided with a plurality of reinforcement 105 in the framework of pivot angle platform 101, the intensity of pivot angle platform 101 can be increased further, a plurality of crisscross reinforcement 105 can also provide installing space for the installation of miscellaneous part.
Described working plate 102 is arranged on pivot angle platform 101, is typically fixed by screw or other modes, and working plate 102 is used for the processed timber of support, timber is placed on working plate 102, you can with saw blade 203, it is processed.
Described left backup plate 103 and right backup plate 104 are installed on pivot angle platform 101 the same side near saw blade assembly 200, provide an operation for timber processing and lean on benchmark, described left backup plate 103 and right backup plate 104 are all along pivot angle platform 101 while setting, the two is located at same straight line, the length sum of left backup plate 103 and right backup plate 104 is substantially equal in the side of pivot angle platform 101, the right part of left backup plate 103 is adjacent with the left part of right backup plate 104, and there is certain interval between both ends and pass through for saw blade 203.
It is provided with the rotary apparatuss 400 enabling to the rotation of working plate assembly between described cradle and working plate assembly 100.Specifically, as shown in Fig. 2 to Fig. 8, on cradle 401, rotary apparatuss 400 include rotary shaft 402, positioning disk 403, the first plane needle bearing 404 and the second plane needle bearing 405 to described rotary apparatuss 400 support.
Rotary shaft described in the present embodiment is eccentric shaft, described eccentric shaft 402 is arranged on cradle 401, eccentric shaft 402 is hollow shaft-like structure, the stepped structure of its section, as shown in Figure 8, the middle part of eccentric shaft 402 is provided with protruding shaft 406, the lower section periphery of protruding shaft 406 is provided with the first support platform 407, first support platform 407 outer peripheral edge is provided with the second support platform 408, described protruding shaft 406, first support platform 407, the top level elevation of the second support platform 408 reduces formation step structure successively, the center of circle of the outer toroid 409 of described protruding shaft 406 and interior annular 410 is not in same position, can not be overlapping, therefore, can be seen that from its sectional view(Fig. 8), the thickness of described protruding shaft 406 is simultaneously uneven, but some positions are relatively thick, and some positions are relatively thin, and certainly described outer toroid 409 and interior annular 410 can be circular or oval.Described pivot angle platform 101 is undertaken in the protruding shaft 406 of eccentric shaft 402 and is fixedly connected with protruding shaft 406, it is preferred to use mode connects for screw.Can achieve the rotation of working plate assembly 100 by eccentric shaft 402.
Eccentric shaft 402 rotates for convenience, the lower section of eccentric shaft 402 second support platform 408 is provided with the first plane needle bearing 404, first plane needle bearing 404 is undertaken between cradle 401 and eccentric shaft 402, enables to eccentric shaft 402 and rotates freely on cradle 401.
Described positioning disk 403 is generally circular laminated structure, positioning disk 403 middle part is positioning disk hole 411, positioning disk 403 passes through positioning disk hole 411 and is set in the protruding shaft 406 of eccentric shaft 402 and is directly or indirectly fixed on cradle 401, so-called indirectly such as it is fixedly connected with the miscellaneous part being fixed on cradle 401, preferentially make to be screwed naturally it is also possible to adopt welding or other fixed forms.
Because the effect of eccentric shaft 402 is so that the gap between eccentric shaft protruding shaft 406 and positioning disk 403 is not a constant value, but some local gaps are bigger, and some local gaps are smaller.It is provided with the second plane needle bearing 405 between described positioning disk 403 and eccentric shaft 402, specifically, described second plane needle bearing 405 is arranged on above eccentric shaft the second support platform 408 in order to support positioning disk 403, under the cooperation of the first plane needle bearing 404 and the second plane needle bearing 405, eccentric shaft 402 can rotate freely.
Described positioning disk 403 is provided with to limit the stopping means of described working plate assembly 100 rotation amplitude, this stopping means is the first stopper slot 412 and the second stopper slot 413 on positioning disk 403, corresponding, described working plate assembly 100 is provided with the first spacing bar assembly 106 and the second spacing bar assembly 107 that can respectively with the first stopper slot 412 and the second stopper slot 413 cooperation.
Specifically, described first stopper slot 412 is located at positioning disk 403 side outer, first stopper slot 412 be respectively arranged at two ends with the first stop face 414 and the second stop face 415, described first spacing bar assembly 106 snaps in the first stopper slot 412, and can move back and forth between the first stop face 414 and the second stop face 415 along the track of the first stopper slot 412, as shown in figure 18.
Described second stopper slot 413 is relative with the first stopper slot 412 located at positioning disk 403 opposite side, is annular trough body structure, and described second spacing bar assembly 107 is embedded in the second stopper slot 413 it is possible to slide in the second stopper slot 413, as shown in figure 18.
As shown in Figure 15,16,18, described first spacing bar assembly 106 is fixedly installed on left backup plate 103, second spacing bar assembly 107 is fixedly installed on right backup plate 104, first spacing bar assembly 106 includes the body of rod 108 being fixedly connected with left backup plate 103, for the convenience installed, the described body of rod 108 is preferably bolt or screw.Spacer 109 and bearing 110 are arranged with the body of rod 108, described spacer 109 is in order to position bearing 110, prevent bearing 110 upper and lower displacement on the body of rod 108, when the first spacing bar assembly 106 and the first stopper slot 412 coordinate, described bearing 110 is contacted with the edge of the first stopper slot 412, can reduce friction therebetween.Described second spacing bar assembly 107 structure is identical with the first spacing bar assembly 106, is not repeated to discuss.
As shown in Fig. 2 to Fig. 8, between described positioning disk 403 and protruding shaft 406, it is provided with the locking device that can stop positioning disk 403 and protruding shaft 406 relative motion.Described locking device includes screw rod 416, the first latch segment 417 and the second latch segment 418, the first latch segment hinge pin 419, the second latch segment hinge pin 420, first collar 421 and second collar 422.
One end of described screw rod 416 is provided with screw thread, screw rod 416 is divided into two parts, i.e. thread segment and smooth section.Described pivot angle platform 101 is provided with the through hole passing through for screw rod 416, so that screw rod 416 extends out from protruding shaft 406 position.
Described first latch segment 417 and the second latch segment 418 are preferably semilune, and support is on eccentric shaft the first support platform 407, and is located between described positioning disk in the hole, protruding shaft 406 and positioning disk 403, as shown in Figure 8.Certainly, the first latch segment 417 and the second latch segment 418 can also be the other shapes that other can be matched with positioning disk 403 with protruding shaft 406.Described first latch segment 417 is directly threadeded with screw rod 416, or threadeded with screw rod 416 by the first latch segment hinge pin 419, described first latch segment hinge pin 419 includes the screwed hole 423 that can engage and the first jointed shaft 424 located at screwed hole 423 lower section with screw rod 416, described first latch segment 417 is provided with first through hole 425, is flexibly connected in this first through hole 425 of the first jointed shaft 424 insertion and with first through hole 425.
Described second latch segment 418 is connected with screw rod 416 axial limiting, so-called spacing connection herein refers to it is a kind of spacing matching relationship between this second latch segment 418 and screw rod 416, i.e. the annexation between screw rod 416 and the second latch segment 418 is mainly reflected in that screw rod 416 is spacing to the second latch segment 418, that is, make the displacement of the second latch segment 418 or motion can not depart from the constraint of screw rod 416.In order to realize this spacing connection,Can be by directly or indirectly on the second latch segment 418, setting can be with the stopper slot of screw rod 416 cooperation or spacing hole,So-called indirectly on the second latch segment 418 setting stopper slot or spacing hole refer to stopper slot or spacing hole are provided on the part of the second latch segment 418 direct or indirect connection,For the present embodiment,Second latch segment 418 and screw rod 416 are linked together by the present embodiment by the second latch segment hinge pin 420,First,One the second latch segment hinge pin 420 should be provided,This second latch segment hinge pin 420 includes a groove 427,It is provided with the second jointed shaft 428 below groove 427,Described second latch segment 418 is provided with the second through hole 429,It is flexibly connected in this second through hole 429 of second jointed shaft 428 insertion and with the second through hole 429.
The not effect with the first latch segment disengaging of the restricted screw rod of first collar, but primarily serve the purpose of and during tensioning, support the second latch segment hinge pin to produce tensile force.When unclamping, second collar is then leaned on to the support of the second locking pulling force!
Support the extruding force that the second latch segment hinge pin 420 produces in the first latch segment 417 and the second latch segment 418 relative motion for convenience, the present embodiment is also on screw rod, the second latch segment hinge pin two is respectively equipped with first collar 421 and second collar 422, first collar 421 and second collar 422 are fixedly connected on screw rod 416, specifically, first collar 421 is set in the second latch segment 418 left end, the end of thread segment, and second collar 422 is set in the second latch segment 418 right-hand member.
The present invention is when using, there are two states in described locking device, i.e. relaxation state and locking state, in a relaxed state, as Fig. 6, shown in 7, first latch segment 417, it is a kind of contact free state between second latch segment 418 and protruding shaft 406 and positioning disk 403, i.e. the first latch segment 417, the power stoping protruding shaft 406 and positioning disk 403 relative motion will not be produced between second latch segment 418 and protruding shaft 406 and positioning disk 403, eccentric shaft 402 and the first latch segment 417 can be driven by pivot angle platform 101 by stirring working plate assembly 100, second latch segment 418 rotates, thus realizing the change of working plate assembly angle.
In locking action, as shown in Figure 4,5, by rotating screw rod 416, first latch segment 417 is moved away from two latch segment 418 direction along screw rod 416, the first latch segment 417 and/or the second latch segment 418 is made to produce extruding force to protruding shaft 406 and positioning disk 403, this extruding force makes the first latch segment 417 and/or the second latch segment 418 with respect to producing sufficiently large frictional force when protruding shaft 406 and positioning disk 403 displacement and then hinder protruding shaft 406 and positioning disk 403 relative motion, it is finally reached locking state, producing locating effect is.When needing to release locking state, only need rotary screw 416 in the opposite direction, first latch segment 417 is moved along screw rod 416 towards two latch segment 418 direction, the first latch segment 417 and/or the second latch segment 418 is enable the extruding force of protruding shaft 406 and positioning disk 403 to be progressively smaller until with the first latch segment 417 and the second latch segment 418 with respect to protruding shaft 406 and positioning disk 403 slidably, as shown in Figure 6,7.
Realize being automatically positioned of table assembly angle for convenience, positioning disk 403 described in this patent is provided with some angle location holes, described screw rod 416 is additionally provided with the angle positioning device with the cooperation of angle location hole.Described angle positioning device includes the set pull bar 433 being set on described screw rod 416, one end of set pull bar 433 is provided with lifting slide block 434, alignment pin 435 with the cooperation of described angle location hole is embedded with lifting slide block 434, the other end of set pull bar 433 is provided with being capable of the traction apparatuss that move horizontally of traction casing pull bar.
Described angle location hole can be configured as needed, such as the present embodiment is provided with 0 degree of location hole 426 and 45 degree of location holes 436 on positioning disk, simultaneously, determine the anglec of rotation of working plate assembly for convenience, the present embodiment is also provided with angle graduated scale 437 on positioning disk, for convenience of reading angular scale value size, the present embodiment is also provided with pivot angle platform and amplifies microscope base 438 and be fixed on the magnifier 439 amplifying on microscope base 438.
As shown in Fig. 9 is to 13, described lifting slide block 434 is by the first side wall 440, second sidewall 441 and connecting plate 442 form, the first side wall 440, second sidewall 441 all comprises a low supporting surface 443 and a high supporting surface 444, connected by inclined-plane 445 between low supporting surface 443 and high supporting surface 444, the first side wall 440, second sidewall 441 is symmetrically mounted at the both sides of described connecting plate 442, form a rail plate, specifically, described connecting plate 442 is connected to the first side wall 440, low supporting surface 443 end of second sidewall 441, described connecting plate 442 is connected with set pull bar 433, described the first side wall 440, second sidewall 441 and connecting plate 442 can be integrally formed.
Described alignment pin 435 includes an Access Division 446 and a bearing pin 447, bearing pin 447 is below Access Division 446, described alignment pin 435 is embedded on lifting slide block 434, specifically, Access Division 446 frame of alignment pin is in the first side wall 440, second sidewall 441, and can slide in pull strength lower edge the first side wall 440, second sidewall 441.Also it is fixed with ejector pin seat 448 above described Access Division 446, alignment pin 435 is connected in ejector pin seat 448, and being capable of vertically upper and lower displacement in ejector pin seat 448, but cannot lateral displacement, it is provided with brute spring 449 between Access Division 446 and ejector pin seat 448, when described alignment pin 435 is arranged to make it move with screw rod 416 on positioning disk, described angle location hole can fall just on the movement locus of alignment pin 435.
Described traction apparatuss include connecting rod 450, spanner 451 and back-moving spring 452, described connecting rod 450 is ship shape, its one end with described set pull bar 433 hinged, described hinged both included between two parts directly hinged, also include between two parts pass through third member indirectly hinged.In the present embodiment, described set pull bar 433 is provided with positive stop 453, and it is hinged that described connecting rod 450 and described set pull bar 433 pass through positive stop 453.Connecting rod 450 other end is hinged with described spanner 451, described spanner 451 end is provided with rectangle connector 454, connector 454 be respectively arranged at the two ends with a through hole, one of through hole is hinged with connecting rod 450, another through hole is hinged on pivot angle platform 101, described pivot angle platform 101 is provided with the through hole passing through for screw rod 416, described back-moving spring 452 is placed on pull bar 433 and is located between set pull bar 433 and connecting rod 450 articulated position and spanner 451 and pivot angle platform 101 articulated position, and that is, back-moving spring 452 is located between positive stop 453 and pivot angle platform 101.
When stirring working plate assembly 100, screw rod 416 and the alignment pin 435 being connected with screw rod will together be followed working plate assembly 100 and be rotated, when above alignment pin 435 moving to angle location hole, alignment pin 435 just insertion angle positioning in the hole in the presence of spring 449, it is achieved thereby that the angle of working plate assembly 100 quickly positions, then, by screwing screw rod 416, working plate assembly 100 is fixing, now, described traction apparatuss are in original state, in an initial condition, the back-moving spring 452 of traction apparatuss is nature elongation state, do not produce elastic force or do not have to produce the elastic force causing characteristic effect enough, alignment pin 435 is on the low supporting surface 443 of lifting slide block 434, as Fig. 9, shown in 10.When needing to release angle positioning, only spanner 451 need to be stirred, set pull bar 433 displacement to the right is driven by connecting rod 450, as shown in figure 11, compression reseting spring 452 simultaneously, the synchronous displacement to the right under the drive of set pull bar 433 of described lifting device 434, and gradually by alignment pin 435 from low supporting surface 443 through inclined-plane 445 transition to high supporting surface 444, meanwhile, alignment pin 435 gradually leaves angle location hole, releases the positioning to angle.When pulling spanner 451 again and making it return original state, described set pull bar 433 returns original state in the presence of back-moving spring 452 and drives lifting slide block 434 and alignment pin 435 to be back to original state simultaneously.
Embodiment 2
The present embodiment is improved to part-structure on the basis of embodiment 1, or proposes replacement scheme to part-structure, and remaining feature is same as Example 1.
Present embodiments provide a kind of alternate embodiments of eccentric shaft, the present embodiment is using conventional axle construction, this axle and the same protruding shaft 406 of eccentric shaft described in embodiment 1, the first support platform 407, the second support platform 408, but the center of circle of the conventional shaft outer toroid 409 that the present embodiment is used and interior annular 410 is overlapping, and that is, the thickness of protruding shaft 406 is uniformity.Simply when mounted so that the axis of the present embodiment conventional shaft and the axis misalignment of the positioning disk hole 411 of positioning disk, that is, make the gap between protruding shaft and positioning disk bigger than normal at some positions, less than normal at other position.
Embodiment 3
The present embodiment is improved to part-structure on the basis of embodiment 1, or proposes replacement scheme to part-structure, and remaining feature is same as Example 1.
As shown in Figure 18 is to 20, the present embodiment is improved to the connected mode of the left backup plate 103 in embodiment 1 and right backup plate 104, the present embodiment is respectively equipped with two backup plate stopper slots 111 in left backup plate 103 and right backup plate 104, left and right backup plate is arranged on pivot angle platform 101 through this backup plate stopper slot 111 by screw, such two backup plates just can slide in backup plate stopper slot 111 limited range, facilitates the regulation of the distance between two backup plates.In order to further such that the slip of backup plate is more convenient, can be with sheathed backup plate spacer 112 on described screw.
The present embodiment is also improved to the first stopper slot 412 on positioning disk and the second stopper slot 413 further,Make the first spacing bar assembly 106 and the second spacing bar assembly 107 when moving along the first stopper slot 412 and the second stopper slot 413,Air line distance S1 of the first spacing bar assembly 106 and the second spacing bar assembly 107 produces change according to the rotational angle of working plate assembly 100,This variation relation is preferably a kind of linear functional relation,I.e. with the increase of rotational angle,S1 also can mutually strain greatly,Spacing between left backup plate and right backup plate is widened,Operation for saw blade 203 provides enough spaces,Now 0 degree of position of working plate assembly 100 will be defined,Work as a left side、Right backup plate is defined as 0 degree of position of working plate assembly 100 when vertical with the axis of saw blade assembly 200,I.e. position shown in Fig. 1.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.There is no need to be exhaustive to all of embodiment.All any modification, equivalent and improvement made within the spirit and principles in the present invention etc., should be included within the protection domain of the claims in the present invention.

Claims (16)

1. a kind of hand saw, including working plate assembly and saw blade assembly it is characterised in that being provided with the rotary apparatuss that working plate assembly can be made to rotate below described working plate assembly.
2. hand saw according to claim 1, it is characterized in that, described hand saw also includes the cradle in order to support working plate assembly, and described rotary apparatuss include the rotary shaft being arranged on cradle and can rotating, and described rotary shaft is fixedly connected with described working plate assembly.
3. it is characterised in that being arranged with positioning disk in described rotary shaft, positioning disk is directly or indirectly fixed on cradle hand saw according to claim 2.
4. hand saw according to claim 3 is it is characterised in that described positioning disk is provided with to limit the stopping means of described working plate assembly rotation amplitude.
5. hand saw according to claim 4, it is characterized in that, described stopping means are the first stopper slot and/or the second stopper slot on positioning disk, and described working plate assembly is provided with can be with the first spacing bar assembly of the first stopper slot cooperation and/or the second spacing bar assembly that can coordinate with the second stopper slot.
6. hand saw according to claim 3 is it is characterised in that be provided with the locking device that can stop positioning disk and rotary shaft relative motion between described positioning disk and rotary shaft.
7. hand saw according to claim 6, it is characterized in that, it is provided with positioning disk through hole in the middle part of described positioning disk, described rotary shaft top is provided with protruding shaft, described positioning disk sleeve is located in protruding shaft, described locking device is between positioning disk and protruding shaft, described locking device include screw rod and between positioning disk and protruding shaft the first latch segment and the second latch segment, described first latch segment is connected with screw flight, second latch segment is connected with screw limiting, at least there are two kinds of operating positions in screw rod rotation process, in the first operating position, described first latch segment and/or the second latch segment extrude rotary shaft and positioning disk and produce the power hindering rotary shaft and positioning disk relative motion, in the second operating position, described first latch segment and the second latch segment cannot produce the power enough to hinder rotary shaft and positioning disk relative motion.
8. hand saw according to claim 7, it is characterized in that, it is connected by the first latch segment hinge pin between described first latch segment and screw rod, it is connected by the second latch segment hinge pin between second latch segment and screw rod, described second latch segment hinge pin is provided with stopper slot or spacing hole and is set on screw rod by stopper slot or spacing hole, on described screw rod, the second latch segment hinge pin be respectively provided on two sides with first collar and second collar.
9. hand saw according to claim 3, it is characterised in that described positioning disk is provided with angle location hole, described screw rod is additionally provided with the angle positioning device with the cooperation of angle location hole.
10. hand saw according to claim 9, it is characterized in that, described angle positioning device includes the set pull bar being set on described screw rod, one end of set pull bar is connected with lifting slide block, alignment pin with the cooperation of described angle location hole is embedded with lifting slide block, the other end of set pull bar is provided with being capable of the traction apparatuss that move horizontally of traction casing pull bar.
11. hand saws according to claim 10, it is characterized in that, described traction apparatuss include connecting rod, spanner and back-moving spring, described connecting rod one end is directly or indirectly hinged with described set pull bar, the other end is hinged with described spanner, described spanner and described working plate member hinges, described back-moving spring is placed on pull bar and is located between set pull bar and rod hinge connection position and spanner articulated position.
It is characterised in that described set pull bar is provided with positive stop, it is hinged that described connecting rod and described set pull bar pass through positive stop to 12. hand saws according to claim 11.
13. hand saws according to claim 10, it is characterised in that being provided with ejector pin seat above described alignment pin, are provided with elastic device between ejector pin seat and alignment pin.
14. hand saws according to claim 2 to 13 are it is characterised in that described rotary shaft is torque-transmitting axle.
15. hand saws according to claim 14 are it is characterised in that be provided with plane needle bearing between eccentric shaft and cradle and between torque-transmitting axle and positioning disk.
16. hand saws according to claim 5 to 13, it is characterized in that, described working plate assembly includes pivot angle platform, the working plate above pivot angle platform and is located at the left backup plate on pivot angle platform and right backup plate, described first spacing bar assembly is on left backup plate, second spacing bar assembly is on right backup plate, described first stopper slot and the second stopper slot are set to when the first spacing bar assembly and the second spacing bar assembly are when moving along the first stopper slot and the second stopper slot, and the air line distance of the first spacing bar assembly and the second spacing bar assembly changes.
CN201510538234.6A 2015-08-28 2015-08-28 Hand-pulling saw Active CN106476083B (en)

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CN203817516U (en) * 2013-09-26 2014-09-10 翟秋朗 Circular saw web cutting machine
CN203863646U (en) * 2014-05-12 2014-10-08 北京天诚同创电气有限公司 Horizontal rotation platform
CN203887956U (en) * 2014-05-13 2014-10-22 丁吉云 Multifunctional woodworking sawing and milling hand saw
CN205130043U (en) * 2015-08-28 2016-04-06 佛山佳加机械有限公司 Hand power saw

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1660532A (en) * 2004-02-23 2005-08-31 胡桂强 Electric miter cutting machine
CN200998872Y (en) * 2006-12-26 2008-01-02 宁波中强电动工具有限公司 Benchmark location mechanism for inclined cutting saw
CN101474695A (en) * 2008-12-23 2009-07-08 王骥 Cutting machine
CN102000878A (en) * 2009-08-31 2011-04-06 苏州宝时得电动工具有限公司 Oblique fracture saw
US20110162502A1 (en) * 2010-01-07 2011-07-07 Credo Technology Corporation Miter detent override mechanism
CN203817516U (en) * 2013-09-26 2014-09-10 翟秋朗 Circular saw web cutting machine
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CN203863646U (en) * 2014-05-12 2014-10-08 北京天诚同创电气有限公司 Horizontal rotation platform
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CN205130043U (en) * 2015-08-28 2016-04-06 佛山佳加机械有限公司 Hand power saw

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