CN102423816A - Saw blade of portable cutting machine and portable cutting machine using same - Google Patents
Saw blade of portable cutting machine and portable cutting machine using same Download PDFInfo
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- CN102423816A CN102423816A CN2011102378904A CN201110237890A CN102423816A CN 102423816 A CN102423816 A CN 102423816A CN 2011102378904 A CN2011102378904 A CN 2011102378904A CN 201110237890 A CN201110237890 A CN 201110237890A CN 102423816 A CN102423816 A CN 102423816A
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- saw blade
- output shaft
- portable cutter
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Abstract
The invention provides a saw blade of a portable cutting machine, wherein the portable cutting machine comprises a shell body, a swing output shaft, a motor and a transmission mechanism, wherein the swing output shaft partially extends out of the shell body; the motor is accommodated in the shell body; the transmission mechanism is arranged between the swing output shaft and the motor; the saw blade comprises a connection part, wherein the connection part is provided with an installation hole which is arranged at the swing output shaft, and a first edge and a second edge which extend along the lengthwise direction and are correspondingly arranged; and the saw blade further comprises a base part which extends from the connection part along the direction from the first edge to the second edge, and a cutting part is arranged at one side of the base part along the lengthwise direction of the connection part, which is far away from the installation hole. The technical scheme is that a curved surface can be cut from a workpiece, so convenience is brought to users. In addition, the invention further provides a swing cutting machine using the saw blade.
Description
Technical field
The present invention relates to a kind of saw blade of portable cutter.
The invention still further relates to a kind of portable cutter that uses above-mentioned saw blade.
Background technology
The saw blade of existing swing cutting machine; Its whole elongated shape; Have the saw blade main body, be positioned at said saw blade main body one end and be used to be installed to the installing hole on the swing cutting machine output shaft, and be positioned at the saw blade main body away from the other end of said installing hole and be used for the sawtooth of cut workpiece.Because said sawtooth is positioned at the end of said saw blade, and its identical with said saw blade body width, when causing its cut workpiece, can only be smooth with cutting workpiece, and can not cut out curved surface, thereby can't satisfy user's demand according to user's demand.
Summary of the invention
The present invention provides a kind of saw blade of portable cutter, and a kind of portable cutter that uses said saw blade also is provided.
For realizing above-mentioned purpose, technical scheme of the present invention is: a kind of saw blade of portable cutter, and said portable cutter comprises: housing; Part is stretched out the swing output shaft of said housing and output swing; Be housed in the motor in the said housing, and output is rotated; The rotation of said motor is converted into the transmission mechanism of the swing of said swing output shaft; Said saw blade comprises: connecting portion, and it has the installing hole that is mounted to said swing output shaft, and said connecting portion has first limit and second limit that longitudinally extends and is oppositely arranged; Said saw blade also comprises: on said connecting portion along said first limit to the extended base portion of direction on said second limit, said base portion has cutting part along said connecting portion longitudinally away from a side of said installing hole.
Preferably, said base portion is the part on the said connecting portion of protrusion second limit.
Preferably, the only extremely direction on said second limit extension of said base portion along said first limit.
Preferably, said base portion is 2 millimeters to 80 millimeters along the length span of himself bearing of trend.
Preferably, said base portion evenly distributes along the width of himself bearing of trend.
Preferably, said width span is 5 millimeters to 11 millimeters.
Preferably, said cutting part is made up of sawtooth, and sawtooth tilts to extend with respect to said base portion, and its bearing of trend is towards said first limit.
Preferably, said cutting part is made up of sawtooth, and the crown of said sawtooth forms an arc line of cut.
Preferably, said base portion extends along straight line back to the sidewall of cutting part.
The present invention also provides a kind of portable cutter, is used for processing work, comprising: housing; Part is stretched out the swing output shaft of said housing and output swing; Be housed in the motor in the said housing, and output is rotated; The rotation of said motor is converted into the transmission mechanism of the swing of said swing output shaft; The hunting frequency of said swing output shaft is more than or equal to 20000 times/minute, and said swing output shaft is equipped with aforementioned saw blade.
Compared with prior art, saw blade of the present invention, thus realized that through the structure of conventional blade having been carried out improve the portable cutter that said saw blade is installed can cut out curved surface on workpiece, expanded the function of the portable cutter of traditional output swing.Promptly when the user uses saw blade cut workpiece of the present invention; Can only utilize base portion cutting,, and extend out from connecting portion one side of said saw blade because the width of base portion is narrower; It is under the drive of said swing output shaft; Can cut out the curved surface of arbitrary shape at surface of the work, bring facility for user's work and life, satisfy user's needs greatly.In addition, portable cutter of the present invention more than or equal to 20000 times/minute, make that the cutting efficiency of said saw blade is high, and the curved surface that cuts out is smooth through hunting frequency.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
The stereogram of a kind of portable cutter that Fig. 1 provides for first embodiment of the invention;
Fig. 2 is the sketch map of portable cutter described in Fig. 1;
Fig. 3 is the sketch map of portable cutter described in Fig. 1;
Fig. 4 is the sketch map of portable cutter described in Fig. 1;
Fig. 5 is that portable cutter described in Fig. 2 is along the cutaway view of straight line P-P;
Fig. 6 removes left half housing stereogram afterwards for portable cutter described in Fig. 1;
Fig. 7 further removes supporting seat stereogram afterwards for portable cutter described in Fig. 6;
Fig. 8 is the perspective exploded view of the motor and the driving shaft of portable cutter described in Fig. 1;
Fig. 9 is the perspective exploded view of the swing output shaft of portable cutter described in Fig. 1;
Figure 10 is the stereogram after motor, supporting seat and the swing output shaft of portable cutter described in Fig. 6 assembled;
Figure 11 is used to connect the front view of a side of motor for the supporting seat of portable cutter described in Figure 10, and wherein tool drives axle and shift fork are installed on the said supporting seat;
Figure 12 is the upward view of supporting seat described in Figure 11;
Figure 13 is the part perspective exploded view of motor, supporting seat and driving shaft described in Figure 10;
Figure 14 is the sketch map of the saw blade of portable cutter described in Fig. 1;
Figure 15 is the perspective exploded view of the supporting component of portable cutter described in Fig. 1;
Figure 16 is the stereogram of the supporting component of portable cutter described in Fig. 1;
Figure 17 installs the sketch map of fan-shaped saw blade for portable cutter described in Fig. 1;
Figure 18 is the phantom of portable cutter described in Fig. 3, and wherein electric machine casing is cut open to show the air channel inlet by part;
Figure 19 is that portable cutter described in Fig. 2 is along the cutaway view of straight line I-I;
The sketch map of the saw blade of a kind of portable cutter that Figure 20 provides for second embodiment of the invention;
The sketch map of the saw blade of a kind of portable cutter that Figure 21 provides for third embodiment of the invention;
The sketch map of the saw blade of a kind of portable cutter that Figure 22 provides for four embodiment of the invention;
Figure 23 is the part sketch map of saw blade among Figure 22, and wherein the sawtooth edge direction opposite with the base portion bearing of trend extended;
The side view of a kind of portable cutter that Figure 24 provides for fifth embodiment of the invention;
Figure 25 is the part decomposing schematic representation of portable cutter described in Figure 24;
Figure 26 is the stereogram of the connector of supporting component among Figure 25;
Figure 27 is the stereogram of the base plate of supporting component among Figure 25;
The sketch map of a kind of supporting component that Figure 28 provides for sixth embodiment of the invention;
Figure 29 is the sketch map of supporting component among Figure 28;
Figure 30 is the part decomposing schematic representation of supporting component among Figure 29;
The sketch map of a kind of supporting component that Figure 31 provides for seventh embodiment of the invention;
Figure 32 is the sketch map of supporting component among Figure 31.
Wherein,
10. portable cutter 23. fresh air inlets 38. motor shafts
12. housing 24. transmission mechanism resettlement sections 40. electric motor fans
14. motor 26. power brick resettlement sections 42. power lines
15. power brick 28. grip parts 44. driving shafts
16. swing output shaft 32. switch modules 45. first spring bearings
18. transmission mechanism 33. guidance sets 46. eccentric parts
19. end wall 34. triggers part 47. driving shaft support members
20. saw blade 35. left half housing, 48. shift forks
21. supporting component 36. control elements 49. resettlement sections
22. motor resettlement section 37. right half housing, 50. axis holes
51. 104. coupling assemblings, 164. first limits, mating part
166. portable cutters 52. spline 106. saw blades are slotted
53. screw 108. guidance sets 168. housings
54. eccentric shaft 112. is regulated fluting 170. swing output shafts
55. fixture 114. lock-screws 172. supporting components
56. capacity eccentric bearing 115. nuts 174. securing members
58. drive division 116. bearings 175. packing rings
60. installation portion 118. assemblies 176. saw blades
62. first actuating arm, 122. connecting plates, 178. body shells
64. first drive surface, 124. air outlets, 180. head capsules
70. instrument installation end 125. baffle plates 182. connectors
184. base plates 72. second spring bearing, 126. air channels enter the mouth
74. the 3rd spring bearing 128. through holes 186. first housings
76. securing member 130. saw blades 188. second housings
77. packing ring 132. installing holes 190. circular ports
78. supporting seat 134. connecting portions 192. annular steel rings
80. first host cavity, 136. second sidewalls, 193. screw holes
82. second host cavity, 138. base portions, 194. counterparts
83. screw 139. serrations 196. are against plate
84. opening 140. saw blades 198. guidance sets
86. first perforate, 142. installing holes, 200. through holes
87. screw 144. connecting portions 202. bottom plate screw holes
88. second perforate, 146. second sidewalls, 204. screws
89. chock 148. base portions 206. fixed heads
90. connecting portion 150. installing holes 208. rollers
92. base portion 152. saw blades 210. fixed heads fluting
94. installing hole 154. installing holes 212. supporting components
96. first limit, 156. connecting portions, 214. connectors
98. surface 158. second sidewalls, 216. base plates
100. serrations 160. base portions 218. installing plates
102. base plate 162. serrations 220. are against plate
222. guidance set 228. is against plate 233. butting sections of slotting
224. upper surface 230. supporting components 234. guidance sets
232. against plate 226. slot
The specific embodiment
Consult Fig. 1, Fig. 5 and Fig. 6; First embodiment of the invention provides a kind of portable cutter 10 to comprise housing 12, is housed in the motor 14 in the housing 12; The power brick 15 of electric energy is provided for said motor 14; Swing output shaft 16 by motor 14 drivings; Transmission mechanism 18 between motor 14 and swing output shaft 16 is installed in the saw blade 20 that is used to the work of cutting on the swing output shaft 16, is used to be resisted against the supporting component 21 that workpiece (not shown) surface to be cut provides support for portable cutter 10.
Please consult Fig. 1, Fig. 3 and Fig. 4 in the lump, motor resettlement section 22 integral body are the drum of hollow, and because whole lengthwise extends to form motor resettlement section lengthwise bearing of trend.The lengthwise bearing of trend along said motor resettlement section, thus motor resettlement section 22 1 end closures have end wall 19, and the other end is connected with transmission mechanism resettlement section 24, and has the circumferential side wall that circumferentially centers on motor 14.Be provided with fresh air inlet 23 at end wall 19, realize heat radiation so that air-flow circulates.The said circumferential side wall of motor resettlement section 22 is provided with the support bar (not shown) that the lengthwise bearing of trend extends along the motor resettlement section; And the circumferential arrangement and the quantity of said support bar lengthwise bearing of trend along the motor resettlement section are no less than three, to be used for motor 14 stable being supported in the motor resettlement section 22.
See also Fig. 1 and Fig. 6; Power brick resettlement section 26 is connected with transmission mechanism resettlement section 24; And be set up in parallel mutually with grip part 28; Promptly the lengthwise bearing of trend extends along said grip part, and when the user used portable cutter 10 to cut work, power brick resettlement section 26 was positioned at the side of grip part back to the user.Power brick resettlement section 26 is the drum of hollow; One end is connected to transmission mechanism resettlement section 24; Its other end seals setting; Thereby formed airtight relatively receiving space in 26 inside, power brick resettlement section, can prevent contamination by dust that power brick 15 is produced by work or by bump and destroy, moreover can prevent effectively that power brick 15 from losing.
In order to improve the stability of portable cutter 10 in cutting process; Can the surface of power brick resettlement section 26 towards workpiece be resisted against on the workpiece; Make the propelling portable cutter 10 that the user can be stable carry out cutting work, and need not firmly to keep portable cutter 10 to be in vacant state, thereby realized improving when cutting stability; Saved user's muscle power again, brought great advantage to the user.In order to strengthen the wearability on said surface, can wear-resistant coating be set on said surface, other anti-wear components such as metal derby etc. perhaps are installed.
Control portable cutter 10 also is installed on housing 12 whether starts the switch module 32 that carries out work.Switch module 32 comprises the triggering part 34 and the control element 36 that is connected with power brick 15 and motor 14 that supplies user's operation, and pass through of user-operable triggers part 34 and control control elements 36, with startup or close portable cutter 10.After switch module 32 is assembled to portable cutter 10; Its integral body between grip part 28 and power brick resettlement section 26 so that user operation; In this embodiment; Switch module 32 is arranged on the grip part 28, and control element 36 is housed in 28 inside, grip part rationally utilizing the inner space of grip part 28, and the user is easy and simple to handle.
Processing and manufacturing for the ease of housing 12; Can be along said grip part the lengthwise bearing of trend with a housing left side half housing 35 that part transmission mechanism resettlement section 24, part grip part 28 and part power brick resettlement section 26 form of serving as reasons in 12 minutes, and the right side half housing of forming by motor resettlement section 22, part transmission mechanism resettlement section 24, part grip part 28 and part power brick resettlement section 26 37.A left side half housing 35 adopts one-body molded processing respectively with right half housing 37, so is provided with and realizes housing 12 easy processing and manufacturings, and be convenient to assembling.
Power brick 15 is housed in the power brick resettlement section 26, and it is made up of five battery units, and rated voltage is 18V, when power is sufficient in the time of so can satisfying portable cutter 10 work, possesses very good portability again.Power brick 15 is connected with power line 42, and being used to be switched to external power source is that power brick 15 is charged.
Further, portable cutter 10 also can not have power brick 15, and is only supplied power by AC power, and just need not be provided with power brick resettlement section 26 on the housing 12 this moment, thereby reduced machine volume.Moreover practiced thrift cost.
See also Fig. 2 and Fig. 5; Motor 14 is housed in 22 inside, motor resettlement section, comprises stator, rotor and the motor shaft 38 that extends in the same way with said motor resettlement section lengthwise bearing of trend and the electric motor fan 40 that promising motor 14 dispels the heat is installed on motor shaft 38.The lengthwise bearing of trend along said motor resettlement section, electric motor fan 40 when it rotates, can drive air-flow and in fresh air inlet 23 entering motor resettlement sections 22, blow to said stator and said rotor realization heat radiation between the end wall of said rotor and motor resettlement section 22.
In this embodiment, motor 14 is a direct current generator, if portable cutter 10 is arranged to adopt ac-powered, then corresponding motor 14 also can adopt alternating current generator.
The rated speed of motor 14 is more than or equal to 20000 rev/mins, and the rotating speed of motor 14 further is greater than 30000 rev/mins, when satisfying portable cutter 10 this moment and have powerful motivation, has service life preferably again.
Please consult Fig. 1, Fig. 7 and Fig. 8 in the lump; Transmission mechanism 18 is contained in the transmission mechanism resettlement section 24; Comprise driving shaft 44; Be set in first spring bearing 45 on the driving shaft 44, with the driving shaft support member 47 of first spring bearing, 45 interference fit with supporting driving shaft 44, the shift fork 48 that is installed in the eccentric part 46 on the driving shaft 44 and cooperates with eccentric part 46.In this embodiment, constituted movement conversion mechanism through eccentric part 46 and shift fork 48, the rotation that motor 14 is exported converts the swing of swinging output shaft 16 to, swings cutting to drive saw blade 20.
Driving shaft 44 and motor shaft 38 coaxial settings make that the bearing of trend of driving shaft 44 is identical with motor resettlement section lengthwise bearing of trend.Driving shaft 44 is independent of motor shaft 38, and is driven by motor shaft 38, and it has drive axis O-O.Driving shaft 44 1 ends have and are used for the axis hole 50 that connects with motor shaft 38, other end setting-up eccentricity spare 46.The hexagon that axis hole 50 is centrosymmetric, motor shaft 14 and axis hole 50 shape are mutually joined, and so the cooperation between the two is firm, relative slip can not occur.
In order to reduce the vibrations of driving shaft 44 and motor shaft 14, in axis hole 50, be provided with spline 52, be provided with buffer layer at spline 52 outer surfaces, said buffer layer can be materials such as rubber, resin.
Certainly, driving shaft 44 can directly be formed by motor shaft 38, and just need not to use spline 52 this moment, and setting-up eccentricity spare 46 cooperates with shift fork 48 on motor shaft 38, and so implementation structure is simple, processing and manufacturing easily, and the transmission process vibrations are less.
Driving shaft support member 47 comprises the resettlement section 49 that is used to accommodate first spring bearing 45, and centers on resettlement section 49 settings and be used for fixing the mating part 51 that is mounted to housing 12.Resettlement section 49 is the tubular of hollow; When first spring bearing 45 is mounted to resettlement section 49; Between the madial wall of itself and resettlement section 49 is interference fit; Thereby the position of realizing first spring bearing 45 is by firm qualification, thus being supported in the driving shaft support member 47 of realizing that driving shaft 44 can be stable.The mating part is fixedly installed on the motor resettlement section 22 through screw 53a and screw 53b, thereby has realized the fixed-site of driving shaft support member 47.
Further; For the position that makes motor 14 more stable; 49 ends back to motor 14 are equipped with fixture 55 in the resettlement section; And fixture 55 runs through driving shaft support member 47 through two screws and is threaded mutually with screw on the motor 14, to realize the bearing of trend fixed-site of motor 14 along drive axis O-O.
After driving shaft 44 was mounted to driving shaft support member 47, eccentric part 46 49 stretched out with fixture 55 central areas from the resettlement section, and to cooperate with shift fork 48, shift fork 48 is swung.
Shift fork 48 is fixedly mounted on the swing output shaft 16, and protrudes from swing output shaft 16 along the circumferential extension of swing output shaft 16, and its bearing of trend forms the shift fork bearing of trend.When portable cutter 10 carries out in the process of work; The movement locus of eccentric part 46 is in the plane of vertical drive shaft axes O-O; In eccentric part 46 and process that shift fork 48 cooperates; The plane at the frictional force direction that produces between the two and said movement locus place is coplane mutually, and promptly the direction of frictional force and drive axis O-O are perpendicular.Because said shift fork bearing of trend and said motor shaft bearing of trend are not provided with in the same way; With offset by self part by eccentric part 46 to edge that shift fork 48 applies the frictional force component perpendicular to said shift fork bearing of trend, thereby the edge of realizing having reduced shift fork 48 is perpendicular to the vibrations on the said shift fork bearing of trend.In this embodiment; Said shift fork bearing of trend and the vertical setting each other of drive axis O-O bearing of trend; Make eccentric part 46 can not produce displacement thus perpendicular to said shift fork bearing of trend with respect to shift fork 48; Make not produce frictional force between eccentric part 46 and the shift fork 48, realize that shift fork 48 can not produce vibrations along vertical said shift fork bearing of trend perpendicular to said shift fork bearing of trend.Thus through making eccentric part 46 can not produce displacement perpendicular to the said second lengthwise bearing of trend with respect to shift fork 48; Make transmission mechanism 18 can not produce basically vibrations or shake less; This moment, portable cutter 10 can adopt rotating speed more than or equal to 20000 rev/mins motor; Even adopt rotating speed, and has preferable operational comfort greater than 30000 rev/mins motor.
See also 7 and Fig. 9, shift fork 48 comprises and wholely extending and drive division 58 that cooperates with eccentric part 46 and the installation portion 60 that is connected with said swing output shaft 16 along said shift fork bearing of trend.
For the structure that makes shift fork 48 more stable; Between the first actuating arm 62a and the second actuating arm 62b, be connected with linking arm 64; And the linking arm 64 and the first actuating arm 62a and the second actuating arm 62b adopt one-body molded processing, and make the integrated stress intensity of shift fork 48 reach best thus.
Please consult Fig. 6, Fig. 7 and Figure 10 in the lump; In order to make eccentric part 46 and shift fork 48 not by contamination by dust; To avoid between the two frictional force big and damage, in portable cutter 10, be provided with the receiving space of a sealing, eccentric part 46 is housed in the said receiving space with shift fork 48; To keep between the two, keep lubricated mated condition not by contamination by dust.In this embodiment, portable cutter 10 also is provided with supporting seat 78 in housing 12, cooperates with driving shaft support member 47 through supporting seat 78 to form said receiving space.
Please consult Fig. 7, Figure 11 and Figure 12 in the lump, be formed with first host cavity 80 that is used to accommodate eccentric part 46 and part shift fork 48 in the supporting seat 78 and be communicated with and be mainly used in and accommodate second host cavity 82 of swinging output shaft 16 with said first host cavity.First host cavity 80 has the openend matched with the resettlement section of driving shaft support member 47 49; When driving shaft support member 47 is assembled to supporting seat 78; The entity part of resettlement section 49 is housed in the said openend; Thereby realize that eccentric part 46 can stretch into first host cavity 80, to cooperate with shift fork 48.Further screw 53a and screw 53b are threaded with screw 83a and screw 83b on being arranged on supporting seat 78 mutually, are fixedly connected between realization housing 12, driving shaft support member 47 and supporting seat 78 threes, thereby make the structure of portable cutter 10 firm.
Please consult Figure 11, Figure 12 and Figure 13 in the lump; Be mounted on the supporting seat 78 for the ease of swing output shaft 16; On the sidewall of second host cavity 82, opening 84 is set away from first host cavity 80; And, accommodate part swing output shaft 16 to be respectively applied for along first perforate 86 and second perforate 88 that the direction of the drive axis O-O of motor 14 is offered.Shift fork 48 will be swung output shaft 16 again and stretch into second host cavity 82 and fit together with shift fork 48 from first perforate 86 after opening 84 stretches into said receiving space, realize that so swing output shaft 16 is mounted to supporting seat 78 with shift fork 48.Further; Supporting seat 78 is provided with and the opening 84 shape chock 89 of joining mutually; Realize after swing output shaft 16 is mounted to supporting seat 78 with shift fork; Make supporting seat 78 inside form the receiving space of sealing, promptly this moment, first host cavity 80 and second host cavity 82 formed airtight said receiving space of accommodating eccentric part 46 and shift fork 48.
In this embodiment, in order to make supporting seat 78 preferable stress intensity is arranged, and have thermal diffusivity preferably, supporting seat 78 is processed for metal material, and preferably, it is processed for aluminum alloy materials.
See also Figure 14, on supporting seat 78, also be provided with and be used for the screw 87 that is fixedly connected with supporting component 21, thereby realize supporting component 21 firm being fixed on the portable cutter 10.Because the housing 12 in the portable cutter 10, motor 14, transmission mechanism 18, swing output shaft 16 and supporting component 21 all directly are fixedly connected with supporting seat 78 mutually; Each part of realizing portable cutter 10 links together mutually closely; Make integrated stress intensity reach best, and reduced vibrations to the full extent.
Please consult Fig. 7 and Fig. 9 in the lump; Swing output shaft 16 has output shaft axis R-R, and the hunting frequency that swing output shaft 16 centers on output shaft axis R-R is carried out cutting work more than or equal to 20000 rev/mins thereby further drive saw blade 20; Higher cutting efficiency is arranged; Further, the hunting frequency of swing output shaft 16 has better cutting efficiency this moment greater than 30000 rev/mins.
The output shaft axis R-R and the drive axis O-O of swing output shaft 16 laterally arrange.So be provided with and make swing output shaft 16 in the course of the work, can to have reduced to swing the vibrations of output shaft 16, not make cutting process more stable in the displacement that produces the drive of shift fork 48 under on the output shaft axis R-R direction.
When portable cutter 10 cuts work; The frictional force direction and the drive axis O-O that produce between eccentric part 46 and the shift fork 48 are perpendicular; This moment since shift fork 48 with swing output shaft 16 for being fixedly connected; Feasible shift fork 48 at this moment receives the frictional force perpendicular to drive axis O-O with swing output shaft 16 integral body, is arranged in parallel owing to swing the output shaft axis R-R and the drive axis O-O of output shaft 16, so the direction of said frictional force is vertical with output shaft axis R-R; Therefore swing output shaft 16 and can not receive, it can not produced along the displacement of output shaft axis R-R bearing of trend along the frictional force of output shaft axis R-R bearing of trend.Realize thus working as portable cutter 10 in cutting the course of work; Swing output shaft 16 is only swung under the drive of transmission mechanism 18; And can not produce the displacement on himself output shaft axis R-R direction; Reduce the vibrations that portable cutter 10 produces in the course of the work greatly, improved operational comfort.In this embodiment, the output shaft axis R-R of swing output shaft 16 and the drive axis O-O of driving shaft 44 are parallel to each other, and vertical each other with said shift fork bearing of trend, and this moment, the vibrations of portable cutter 10 reached minimum, and it is best that operational comfort reaches.
Please consult Fig. 9 and Figure 12 in the lump; After swing output shaft 16 is mounted to supporting seat 78; Second spring bearing 72 and the 3rd spring bearing 74 can be respectively and the madial wall of first perforate 86 of supporting seat 78 and second perforate 88 interference fit mutually; Thereby realize to limit the position of second spring bearing 72 and the 3rd spring bearing 74, and then realize limiting the position of swing output shaft 16, and nationality makes between second host cavity 82 and the swing output shaft 16 realization seal to be connected by second spring bearing 72 and the 3rd spring bearing 74 are installed; Thereby it is inner to have avoided dust to get into said receiving space, and then has avoided pollution eccentric part 46 and shift fork 48.
The hunting frequency of swing output shaft 16 when work is more than or equal to 20000 times/minute, and its hunting frequency further also can be arranged to so make portable cutter 10 have higher cutting efficiency greater than 30000 times/minute.In this embodiment, the rotating speed of swing output shaft 16 equals 20000 times/minute, so when satisfying high cutting efficiency, makes portable cutter 10 have long service life.
See also Figure 14; Saw blade 20 is installed on the swing output shaft 16, and together swings in company with swing output shaft 16, and the hunting frequency of therefore working as swing output shaft 16 is more than or equal to 20000 times/timesharing; The hunting frequency of saw blade 20 is too more than or equal to 20000 times/minute; Accordingly, when the swing output shaft 16 hunting frequency greater than 30000 times/timesharing, the hunting frequency of saw blade 20 is also greater than 30000 times/minute.In this embodiment, the hunting frequency of saw blade 20 equals 20000 times/minute.
Connecting portion 90 is writing board shape, and it has two relatively and the first side wall 92a and the second sidewall 92b that extend along connecting portion 90 longitudinallies, and all adjacent with the first side wall 92a and the second sidewall 92b, and has the 3rd sidewall 92c of an installing hole 94.The first side wall 92a and the second sidewall 92b respectively with the adjacent position of the 3rd sidewall 92c, form the first limit 96a and the second limit 96b respectively.
The periphery that the 3rd sidewall 92c is provided with installing hole 94 is the circular arc transition of the said installing hole 94 of semi-surrounding; And the center of circle of circular arc overlaps with the center of circle of installing hole 94; It can be saved portable cutter 10 and be the headspace of saw blade 20, and makes saw blade 20 more smooth and easy with cooperating of portable cutter 10 when swing.
The shape of installing hole 94 can be polygon, circle and other shapes that is centrosymmetric; In this embodiment; Installing hole 94 be shaped as polygon, it can be joined with the polyhedron-shaped shape mutually of instrument installation end 70, when realizing the 16 output swings of swing output shaft; Can drive saw blade 20 and can not produce relative slip, and can as required saw blade 20 be limited in a plurality of different angles position.When saw blade 20 is assembled to 10 last times of portable cutter, installing hole 94 is socketed on the swing output shaft 16, and through fastening the two the relative position relation of securing member 76.When portable cutter 10 work; Saw blade 20 forms a swinging plane under swing output shaft 16 drives; Said swinging plane is vertical with the output shaft axis R-R of said swing output shaft 16; Be that said swinging plane and said grip part lengthwise bearing of trend parallel setting, so just the user carries out cutting work through grip part 28 promotion portable cutters 10.The first side wall 92a and all vertical said swinging plane in the extension plane of the second sidewall 92b in this embodiment.
The direction of base portion 92 96a to the second limit 96b along first limit is extended, and from the position protrusion connecting portion 90 of the second sidewall 92b away from installing hole 94, and base portion 92 is the part after the protrusion connecting portion 90.Base portion 92 has cutting part along the longitudinally of connecting portion 90 away from a side of installing hole 94, and promptly said cutting part is in the end of saw blade 20 away from the swing output shaft, and base portion 92 has the surface 98 with the cutting part adjacency.In this embodiment, the only direction of 96a to the second limit 96b extension of base portion 92 along first limit, cutting part is the serrations 100 that some sawtooth are formed, when cut workpiece, surface 98 and said swinging plane coplane.
In this embodiment, base portion 92 promptly along the constant width of its bearing of trend, so makes the stress intensity of base portion 92 better for evenly to extend connecting portion 90 from the second sidewall 92b, and in the process of utilizing serrations 100 cut workpiece, is not easy fracture.The said sawtooth of on the serrations 100 each includes crown and tooth root; Crown is along line of cut of formation arranged in a straight line; Under the drive of swing output shaft 16; The crown that is arranged in a linear is constantly swung cut workpiece, and has preferable cutting efficiency, said tooth root to be used for said sawtooth is fixedly connected with base portion 92.
Swing cutting in order to adapt to portable cutter 10; Be subject to the distance between the crown of pendulum angle and adjacent sawtooth of portable cutter 10; The distance that connecting portion must be able to be satisfied along the length of himself longitudinally make said saw-tooth wobble is greater than the crown distance of adjacent sawtooth, and concrete size no longer describes in detail at this as space is limited.
According to different use needs; Base portion 92 can be arranged to different sizes along the length L of its bearing of trend with the width W of relative its bearing of trend; Length L span such as base portion 92 can be 2 millimeters to 80 millimeters; Wherein preferable length can be selected from 15 millimeters to 40 millimeters, and preferably length is selected from 20 to 35 millimeters.The width W span of base portion 92 can be 5 millimeters to 11 millimeters, and wherein preferable width can be selected from 7 millimeters, 8 millimeters and 9 millimeters, promptly 7 millimeters to 9 millimeters.The saw blade 20 of choosing above-mentioned preferred length and width can make cut workpiece reach a preferable cutting effect.
Connecting portion 90 can be divided into two parts and form, and promptly a part is provided with installing hole 94, and another part is provided with base portion 92.Connecting portion 90 has the segment thickness of installing hole 94 greater than the part that is provided with base portion 92; And adopt modes such as welding, riveted joint to be fixedly connected between two parts; So setting can be so that saw blade 20 processing and fabricatings; Simultaneously also be arranged to different thickness, make saw blade 20 have preferable stress intensity, and make it have preferable cutting effect according to the function and usage difference between connecting portion 90 zoness of different.
According to different use needs, can be arranged to different angle δ between the line of cut of serrations 100 and the first side wall 92a, the span of said angle δ can be 65 ° to 120 °, wherein preferable angle value can be selected from 80 ° to 110 °.Said angle δ chooses above-mentioned preferable angle value can make the cutting performance of saw blade 20 perform to preferable states.
In order to make base portion 92 more stable with the syndeton of connecting portion 90; Make saw blade 20 in the cut workpiece process; Base portion 92 can not rupture with the junction of connecting portion 90; Can be arranged to the cambered surface transition back to the surface of serrations 100 and the second sidewall 92b junction of connecting portion 90 at base portion 92, at this moment, the part of base portion 92 for stretching out connecting portion 90 after the said cambered surface transition.
In order to improve saw blade 20 in cutting curved surface process safe property, connecting portion 90 is not provided with sawtooth with the end wall of cutting part 100 adjacency, preferably is the plane and is provided with.So when the user cuts work; If maloperation is stretched into interior with said end wall; The user just can't promote portable cutter 10 and cut forward this moment; So avoided the user to carry out curved surface when cutting, changed cut direction and cause connecting portion 90 to be twisted off, the part of further having avoided the twisting off harm users that flies out by workpiece.
Certainly, be not used in the effective cutting length of cutting during curved surface in order to increase saw blade 20, also can away from the end face of installing hole 94 sawtooth be set at connecting portion 90, the sawtooth of connecting portion 90 and serrations 100 sawtooth are same to be arranged along straight line.A certain position on the cut workpiece plane inclined-plane can be set, and said inclined-plane can be arranged between installing hole 94 and connecting portion 90 and base portion 92 link positions when using separately for the ease of saw blade 20 simultaneously on connecting portion 90.Certainly, saw blade 20 can only have serrations 100, and sawtooth is not set on connecting portion 90, and does not have said inclined-plane.
Thereby saw blade 20 can cut out curved surface through the portable cutter that the structure of conventional blade has been carried out improve the output swing that has realized installation saw blade 20 on workpiece, expanded the function of traditional wobble cutting machine.Promptly when the user uses saw blade 20 cut workpiece of the present invention; Can only utilize base portion 92 to cut,, and extend out from connecting portion one side of said saw blade because the width of base portion is narrower; It is under the drive of said swing output shaft; Can cut out the curved surface of arbitrary shape at surface of the work, bring facility for user's work and life, satisfy user's needs greatly.
Please consult Fig. 1, Figure 15 and Figure 16 in the lump, portable cutter 10 is resisted against through supporting component 21 and carries out cutting work on the workpiece.Supporting component 21 comprises the coupling assembling 104 that is used to be resisted against the base plate 102 of surface of the work and is used for base plate 102 is connected to portable cutter 10.
Be provided with guidance set 108 at saw blade fluting 106 away from ends of swing output shaft 16.The swing process that guidance set 108 is used to saw blade 20 provides guiding, to reduce the vibrations of saw blade 20 in the process of swing cut workpiece.In this embodiment, guidance set 33 comprises and is oppositely arranged on saw blade the slot first guide roller 108a and the second guide roller 108b of 106 both sides.When portable cutter 10 cut workpiece; Saw blade 20 can be held between the first guide roller 108a and the second guide roller 108b, and when saw blade 20 cutting curved surfaces, can be resisted against on one of them roller (the first guide roller 108a or the second guide roller 108b), and roller this moment (the first guide roller 108a or the second guide roller 108b) can rotate; Do not hinder thereby can not constitute the oscillating motion of saw blade 20; So be provided with, can in cutting curved surface process, prevent that saw blade 20 from squinting; Thereby improved whole cutting accuracy greatly, reduced the risk of saw blade 20 simultaneously because of the too violent fracture of vibrations.Preferably; Serrations 100 is closed in the saw blade 20 and the first guide roller 108a or the contacted zone of the second guide roller 108b; And the distance of the said tooth root of region distance of said contact is greater than 1 millimeter and less than 20 millimeters; So be provided with and make the guiding of guidance set 33 and damping effect better; And between said two guide rollers and said tooth root, reserved 1 mm distance, produced wear problems thereby realize effectively having avoided installation because of guide roller to exist tolerance to cause between guide roller and the said sawtooth.
The abutment face of base plate 102 is not limited to rectangle, and it can also be made into other shapes like circle, triangle, other polygons or the like.
Between base plate 102 and coupling assembling 104, be connected through locking mechanism; And locking mechanism is exercisable to be in and to discharge said base plate and make it can be with respect to first state of swing output shaft adjusting position; And lock second state of said base plate, thereby realize that the user can be according to the position of demand fixed base plate 102 with respect to said swing output shaft position.
In this embodiment; Said locking mechanism comprises and is arranged on the boss 110 of base plate 102 back to the surface of said abutment face; The lock-screw 114 that passes boss 110 and can be threaded mutually with coupling assembling 104, and the nut 115 corresponding with lock-screw 114.
In this embodiment, the quantity of lock-screw 114 is two, thereby realizes the position of qualification base plate 102 that can be stable, and between lock-screw 114 and base plate 102, pad is set, to prevent lock-screw 114 damage base plates 102.
When the user need use different saw blades to cut work; Need to regulate the position of base plate 102; So that guidance set 33 can adapt to every kind of size that saw blade is different; This moment, the user can loosen lock-screw 114, and base plate 102 can slide to realize that base plate 102 can be along cut direction with respect to swing output shaft 16 adjusting positions with respect to lock-screw 114 through regulating fluting 112, and be said first state of said locking mechanism this moment; When the user regulates the position of the base plate 102 that finishes, and with lock-screw 114 lockings, this moment, base plate 102 was locked the position with respect to swing output shaft 16, realized that said locking mechanism is in said second state.
Coupling assembling 104 comprises the bearing 116 that is connected with said lock-screw 114, and an assembly 118 that is used to be mounted to portable cutter 10.
Bearing 116 is mounted to the boss 110 of base plate 102, and bearing 116 has the guide plate that guiding is provided when moving for boss 110.In this embodiment; Said guide plate is two side plates 118 that are oppositely arranged on the bearing 116; And two side plates 120 lay respectively at a side of boss 110; Realization is sandwiched in boss 110 between two side plates 120, and the surface that side plate 120 and boss 110 are faced mutually fits each other, so realizes when adjusting base plate 102, can carrying out stable guiding through two side plates 120.
Between two side plates 120, be provided with connecting plate 122, connecting plate 122 is provided with the screw corresponding with lock-screw 114, is used to make lock-screw 114 to pass to be threaded mutually with nut 115 from said screw.
When portable cutter 10 cut workpiece, can be resisted against on the surface of the work saw blade 20 this moment cut workpiece under the drive of swing output shaft 16, and the said abutment face of the 3rd sidewall 92c vertical base plate 70 of saw blade 20 through supporting component 21.In this embodiment; If the angle value scope of the line of cut of said abutment face and serrations 100 is α; The angle of swing output shaft 16 output pivot angles is β, and when swing output shaft 16 was in β/2 pivot angles, the angle value of said abutment face and said line of cut angle was γ; Then the maximum angle value of α is γ+β/2, and then the minimum angles value of α is γ-β/2.Wherein, the value of γ is selected from 80 ° to 100 °, and at this moment, portable cutter 10 has cutting effect relatively preferably, and preferably the value of γ is 90 °, can make portable cutter 10 reach best cutting effect.The value of β can be 2.8 °, 3.2 ° or 4 ° or the like, and this moment is through calculating the scope that just can draw α, and such as as γ being 80 ° and β when being 3.2 °, the span of α is 78.4 ° to 81.6 °; When γ is 90 ° and β when being 3.2 °, the span of α is 88.4 ° to 91.6 °, and all the other situation are enumerated at this no longer one by one.
In order to accelerate the radiating rate of saw blade 20 in the cutting course of work; Can in the housing 12 of portable cutter 10, fan be set; And near the position of saw blade 20 air outlet towards saw blade 20 is set at housing 12, and between said fan and said air outlet, is formed with the air channel that air feed stream flows, so setting; Make said fan can drive that air communication is crossed said air channel and air outlet flows to saw blade 20; Thereby can accelerate the cooling velocity of saw blade 20, the temperature of so having avoided saw blade 20 is too high and rupture, and has also avoided the user to contact saw blade 20 simultaneously and is scalded.
See also Fig. 1 and Figure 18; In this embodiment; Circumferentially be provided with air outlet 124 along the output shaft axis R-R of swing output shaft 16 on the housing 12; And the direction that air outlet extends towards connecting portion 90 lengthwises of saw blade 20, the air-flow of so realizing flowing out from air outlet 124 can maximum area the surface through saw blade 20, realize that radiating effect is best.
Said fan is installed on the motor shaft of motor 14; It is the electric motor fan 40 of motor radiating; And between motor resettlement section 22 to air outlet 124, be provided with the air channel of perforation; So that the air-flow that electric motor fan 40 produces can flow to air outlet 124 through said air channel, and flow to saw blade 20 from air outlet 124.In this embodiment; Motor resettlement section 22 is provided with air channel inlet 126 along the said circumferential side wall side of drive axis O-O; And air channel inlet 126 closes on motor 14; So setting can realize that air-flow gets into before the said air channel, at first can take away the heat that motor 14 courses of work produce, thereby realizes that the air-flow that makes full use of electric motor fan 40 work generations is motor 14 and saw blade 20 heat radiations simultaneously.
Please consult Figure 18 and Figure 19 in the lump; The air channel inlet 126 in said air channel is arranged on right half housing 37; And air outlet 124 is arranged on left half housing 35, so said air channel need extend on left half housing 35 from the right side half housing 37, wherein said air channel is through supporting seat 78; The air-flow of flowing through in the said air channel this moment can cooperate the heat that produces to take away eccentric part 46 with shift fork 48, thereby has realized being the transmission mechanism heat radiation.
In this embodiment; The position of corresponding right half housing 37 and left half housing 35 is formed with the through hole 128 that runs through supporting seat 78 on supporting seat 78, and nationality arrives the air outlet 124 of left half housing 35 at last by air channel inlet 126 through holes 128 to supporting seat 78 of the right side half housing 37 at this moment; Formed a unimpeded air channel; The air-flow that this moment, electric motor fan 40 produced at first can be for motor 14 dispels the heat, immediately air-flow after air channel inlet 126 gets into said air channel, the said through hole 128 of can flowing through; This moment, air-flow can be with taking away because of eccentric part 46 and shift fork 48 fricative heats on the supporting seat 78; Last air-flow flows to saw blade 20 from air outlet 124, further be saw blade 20 heat radiations, thereby realizes reaching the best through the heat dispersion that said air channel causes portable cutter 10 is set.
Directly flow through eccentric part 46 during with shift fork 48 for fear of the air-flow in said air channel; Its dust that carries constitutes pollution to eccentric part 46 and shift fork 48; So through hole 128 is not communicated with said receiving space; But preferably the sidewall thickness between the two is less than 20 millimeters, and have preferable radiating effect to said receiving space this moment.Preferably, the thickness of said sidewall is smaller or equal to 5 millimeters, like 5 millimeters, 4 millimeters, 3 millimeters, 2 millimeters, 1 millimeter or 0.5 millimeter etc.
In order to increase the current rate that gets into air channel inlet 126, electric motor fan 40 is designed to centrifugal fan, so cooperates air channel inlet 126 circumferential arrangement along motor resettlement section 22, the flow velocity of air-flow in the said air channel is speeded, and then better radiating effect is arranged.Further, the direction internal diameter of the said circumferential side wall of motor resettlement section 22 inlet 126 along fresh air inlet 23 to air channel becomes greatly gradually, the air-flow velocity that makes through said air channel so is set further increases, and it is best that radiating efficiency reaches.
See also 1; A left side half housing 35 be provided with baffle plate 125, and baffle plate 125 be arranged on the swing output shaft 16 stretch out the circumferential position of the part of housing 12, air outlet 124 is arranged on the baffle plate 125; Realize that the air-flow that flows out blows to the cut direction of saw blade 20; In the time of for saw blade 20 heat radiations, also can the chip that produce in the saw blade cutting process be blown away, make cutting work that preferable sight line arranged.
Certainly; Those skilled in the art also possibly be provided with a radiator fan that is independent of electric motor fan 40 in housing 12; Said radiator fan can directly be provided with the position of corresponding air outlet 124, and so realization is fast from the air-flow velocity that air outlet 124 flows out, and realizes the heat radiation of saw blade 20 is reached best.Certainly those skilled in the art also possibly make other design alteration, but as long as its function and effect and the present invention is same or similar all should be covered by in the protection domain of the present invention.
Seeing also Figure 20, is the saw blade 130 of the portable cutter that provides of second embodiment.Saw blade 130 comprises the connecting portion 134 with installing hole 132, and from the base portion 138 that the second sidewall 136b of connecting portion 134 extends connecting portion 134, is arranged on the serrations 139 on the base portion 138.
The saw blade 20 that the function of saw blade 130 and structure and first embodiment provide is basic identical; Its difference is: connecting portion 134 is away from the horizontal range in end face to installing hole 132 centers of circle of installing hole 132; Greater than the horizontal range in any point to installing hole 132 centers of circle on the base portion 138, promptly connecting portion 134 is away from the end level protrusion base portion 138 of installing hole 132.When portable cutter cuts curved surface through saw blade 130 on workpiece; Have only base portion 138 in the slit that workpiece cuts, to cut; And the part of connecting portion 134 protrusion can be blocked by workpiece planarization, thereby connecting portion 134 can't get in the slit that workpiece is cut open, and so is provided with and can prevents that connecting portion 134 from getting in the slit of cutting; And then prevented connecting portion 134 from being applied the pressure of vertical said swinging plane direction and saw blade 130 is damaged by curved surface; Simultaneously also can remind the user need adjust angle, the projection that makes connecting portion 134 is the contact workpiece surface no longer, and safety is smooth and easy more to realize cutting process.
Seeing also Figure 21, is the saw blade 140 of the portable cutter that provides of the 3rd embodiment.Saw blade 140 comprises the connecting portion 144 with installing hole 142, and extends the base portion 148 of connecting portion 144 from the second sidewall 146b of connecting portion 144.
The saw blade 20 that the function of saw blade 140 and structure and first embodiment provide is basic identical, and its difference is: the first side wall 146a of connecting portion 144 and connecting portion 144 are away from being the cambered surface transition between the end wall of installing hole 150.So be provided with, can reduce the quality of saw blade 140, thereby in the process of cut workpiece, the vibrations of saw blade 140 be less, make cutting more accurate, and himself be not easy to be shaken damage.
Seeing also Figure 22, is the saw blade 152 of the portable cutter that provides of the 4th embodiment.Saw blade 152 comprises the connecting portion 156 with installing hole 154, and goes up extended base portion 160 from the second sidewall 158b of connecting portion 156.
Certainly; If with two free ends of circular arc line of cut and the center of circle of himself be connected to form one fan-shaped, in the time of outside the center of circle of installing hole 154 is positioned at this sector region, promptly the center of circle of the center of circle of installing hole 154 and arc line of cut does not coincide; At this moment; It is smaller that the maximum occurrences of said difference h can be provided with, and such as less than 20 millimeters, concrete numerical value is according to concrete design and decide.So be provided with and effectively reduce the width of base portion 160, thereby be more prone to cut out curved surface.
Because aspect factors such as structure setting and size; Possibly exist not is that whole said lines all exist intersection point with base portion 160 back to the sidewall of serrations 162; If but have the part of intersection point, and satisfying the situation of foregoing description, then all should be covered by in the protection domain of the present invention.
See also Figure 23, in order further to improve cutting efficiency, the sawtooth of serrations 162 can tilt to extend with respect to base portion 160, and its bearing of trend is towards first limit 164 of connecting portion 156, and promptly sawtooth extends along the direction opposite with the bearing of trend of base portion 160.If this moment, said portable cutter was equipped with the base plate that aforementioned embodiments is introduced; So be provided with sawtooth towards; Can also in cutting process, strain position relation between base plate and the workpiece, make the two cooperation tightr, thereby can reduce the vibrations in the cutting process.
See also Figure 22, the effective cutting length when being not used in the cutting curved surface in order to increase saw blade 152, connecting portion 156 is provided with sawtooth away from the end face of installing hole 154, and the sawtooth of said sawtooth and serrations 162 is arranged along same circular arc line.
Please consult Figure 24 and Figure 25 in the lump, the portable cutter 166 that provides for fifth embodiment of the invention comprises housing 168, motor (not shown), transmission mechanism (not shown), swing output shaft 170, supporting component 172, securing member 174 and saw blade 176.
Motor is arranged in the body shell 178, and it rotates through motor shaft output.Transmission mechanism is positioned at body shell 178 and head capsule 180, and its rotation with motor output converts oscillating motion to, and drive swing output shaft 170 will be swung output.Swing output shaft 170 is contained in the head capsule 180, and the one of which end is polyhedron-shaped and stretches out head capsule 180, and this end central area axially is provided with a screwed hole along swing output shaft 170, and this screwed hole is used for being threaded mutually with securing member 174.In order to make securing member 174 and swing being connected between the output shaft 170 more firm, on securing member 174, be arranged with packing ring 175.
Supporting component 172 comprises connector 182 and base plate 184.When supporting component 172 is assembled to portable cutter 166, connector 182 will be sandwiched between saw blade 176 and the head capsule 180, and so setting can prevent effectively that connector 182 from coming off from head capsule 180, and base plate 184 provides support for saw blade 176 cut workpiece.
Please consult Figure 25 and Figure 26 in the lump.Connector 182 is processed by flexible material, has first housing 186 and second housing 188, and is formed at the circular port 190 between first housing and second housing.It can be set in head capsule 180 outsides, and is used for fixing the position relation between supporting component 172 and the portable cutter 166.In this embodiment, connector 182 is plastic products.
It is tightr for what it can be cooperated with head capsule 180 adopting flexible material to process connector 182.After connector 182 cover is connected to head capsule 180, just can overcome the tolerance of size through the elastic deformation of flexible material, connector 182 is cooperated closely with head capsule 180.Said flexible material can also be rubber, pliability preferred metal etc.; Do not enumerate one by one at this as space is limited; But the content that discloses according to the present invention as long as the function of its realization and effect and said flexible material are same or similar, all should be covered by in the protection domain of the present invention.
The head capsule 10 of first housing 186 and second housing 188 and portable cutter 166 shape is mutually joined; Promptly be assembled to 166 last times of portable cutter when supporting component 172; It is connected on the head capsule of portable cutter through connector 182 covers; At this moment, connector 182 is between saw blade 176 and head capsule 180, and swing output shaft 170 stretches out saw blade 176 work that drive from circular port 190.The aperture sidewall of circular port 190 is provided with annular steel ring 192, prevents that saw blade 176 from directly contacting and the hole wall that weares and teares with the hole wall of circular port 190 in the course of the work, thereby plays the effect of protection connector 182.
In order better to limit the position of connector 182; Can increase the frictional resistance between connector 182 and the housing 168; As towards the surface of portable cutter 166 skid resistant course being set,, rubber strip etc. is set perhaps like rubber coating at first housing 186 and/or second housing 188.Certainly those skilled in the art can also limit the position relation between connector 182 and the portable cutter 166 through other modes, but need only the function of its realization and effect the present invention is same or similar all should be covered by in the protection domain of the present invention.
Be respectively arranged with screw hole 193 at first housing 186 and second housing 188 around the position of circular port 190, be used for being fixedly connected with base plate 184.Certainly; The position and the quantity of screw hole 193 are not limited to foregoing description; It can be provided with needs according to structure and be arranged on other positions, and quantity also can be arranged to three, four or the like, as long as the relation of the position between fixed connecting piece 182 that can be firm and the base plate 184.
Can very easily supporting component 172 be mounted to portable cutter 166 through connector 182; Be about to head capsule 180 outsides that connector 182 covers are received portable cutter 166; When needs are dismantled; At first securing member 174 is unloaded, just can together take off connector 182 together with saw blade 176 this moment from portable cutter 166, bring great convenience to the user.
Please consult Figure 25 and Figure 27 in the lump.Base plate 184 comprises counterpart 194, against plate 196 and guidance set 198.
The zone that centers on through hole 200 at counterpart 194 is provided with bottom plate screw hole 202.The quantity in bottom plate screw hole 202 and position are all corresponding with the quantity and the position of the screw hole 192 of connector 182, and in this embodiment, the quantity in bottom plate screw hole 202 is two, and its position is corresponding with the position of two screw holes 192 of connector 182 respectively.When plate 196 is installed to connector 182, for through the two positions relation of two screws, 204 lockings.
Roughly be writing board shape against plate 196, its surface back to counterpart 194 is an abutment face, is used for when portable cutter 166 cut workpiece; Be resisted against the surface of workpiece; Make cutting operation more stable, and can reduce the vibrations in the cutting process, prevent to damage saw blade 176 because of vibrations.Said abutment face roughly is rectangle; It has pair of long edges line and pair of short edges line; When supporting component 172 is assembled into 166 last times of portable cutter; The axis extended line of swing output shaft 170 is in the projection on the extension plane of said abutment face, and is vertical with said long sideline, and with said minor face line parallel.In two said minor face lines, the minor face line away from said swing output shaft is X with swing output shaft 170 at the projector distance of said abutment face relatively; Axis and the sawtooth of saw blade 176 of swing output shaft 170 are Y at the projector distance of said abutment face, and because of the quantity of said sawtooth can be for a plurality of, so projector distance Y is said axis and the said sawtooth maximal projection distance at said abutment face; In this embodiment, projector distance X >=projector distance Y so is provided with and is supported in the time of can making saw blade 176 cut workpiece that assembly 172 is stable more, reliable supporting.Preferably, projector distance X >=40 millimeter so are provided with and can further improve the stability of cutting.
It is used for when portable cutter 166 cut workpiece, accommodating saw blade 176 along the fluting 204 that extends against plate 196 longitudinallies being provided with one against plate 196 away from an end of counterpart 194, makes saw blade 176 can pass fluting 204 cut workpiece.
In order to strengthen, can some gussets be set on the surface that counterpart 194 is set against plate 196 against the stress intensity of plate 196.
Guidance set 198 comprises fixed head 206 and two rollers 208.
Abutment face against plate 196 is not limited to rectangle, and it can also be made into other shapes like circle, triangle, other polygons or the like.Accordingly, also can change accordingly,, all should be covered by in the protection domain of the present invention as long as its technical spirit is identical with the present invention or its change belongs to those skilled in the art's common practise against the shape of plate 196, counterpart 194 and guidance set 198.
Please consult Figure 28 to Figure 30 in the lump, the supporting component 212 of the portable cutter that provides for sixth embodiment of the invention.Supporting component 212 comprises having connector 214 and base plate 216.
The functional structure of the supporting component 172 that supporting component 212 and the 5th embodiment provide is basic identical; Its difference is: base plate 216 comprises the installing plate 218 that is connected with connector 214; Be assembled on the connector against plate 220, and be installed in the guidance set 222 on the plate 220.
Installing plate 218 adopts plastic material to process, and it is rectangular shape, and has upper surface 224a and lower surface 224b.Upper surface 224a is connected with connector 214 along an end of installing plate 218 longitudinallies, and in this embodiment, installing plate 218 adopts integrative-structure to process with connector 214.Upper surface 224a is provided with some screw holes, is used for position relation fixing through screw and against plate 220.Upper surface 224a is provided with a fluting 226 along installing plate 218 longitudinallies away from an end of connector 214, and slots and 226 extend along said longitudinally.Fluting 226 has notch 226a, and the sidewall of notch 226a formation depression, is that guidance set 222 is reserved certain spaces.When installing plate 218 with when plate 220 fits together, lower surface 224b is with matched against plate 220.
Process for metal material against plate 220, it is rectangular shape, and has the abutment face 220a that is used for against workpiece.Surperficial 220b against plate 220 back to abutment face 220a is used for connecting with the lower surface 224b of installing plate 218.Surface 220b is provided with the corresponding screw hole of screw hole with installing plate 218, thereby realizes against passing through fixing the two the position relation of screw between plate 220 and the installing plate 218.In this embodiment, adopt corrosion resistant plate to process against plate 220, have good wear resistance thereby make against plate 220.
Position against the fluting 226 of plate 220 corresponding installing plates 218 is provided with against plate fluting 228, and fluting 226 and run through base plate 216 against plate fluting 228 makes the saw blade of portable cutter can pass the fluting cut workpiece.
Can take some measures; Make installing plate 218 and concern more firm against the position between the plate 220; And prevent the situation of wearing and tearing installing plate 218, in this embodiment, be provided with the flanging that bends towards installing plate 218 against the edge of the surperficial 220b of plate 220; Thereby effectively protected installing plate 218, and can play further spacing effect.
Guidance set 222 is arranged at against the notch place of plate fluting 228, and when when plate 220 and installing plate 218 fit together, guidance set 222 stretches out the upper surface 224a of installing plate 218 from 226 the notch 226a of slotting.The concrete function structure and the guidance set 198 in the 5th embodiment of guidance set 222 are basic identical, do not repeat as space is limited to introduce at this.
In this embodiment, supporting component 212 simple in structure makes overall structure compact more, and whole stress intensity had significantly and improve, and makes support more reliable and more stable.
See also Figure 31 and Figure 32, the supporting component 230 of the portable cutter that provides for seventh embodiment of the invention.
The functional structure of the supporting component 212 that supporting component 230 and the 6th embodiment provide is basic identical; Its difference is: the side against plate 232 towards workpiece of base plate 230; Have the first plane 232a and the second plane 232c; Wherein the second plane 232c is used for against workpiece, and the extension Plane intersects of the first plane 232a and the second plane 232c, thus make butting section 233 that fluting is set and part that guidance set 234 is installed towards direction perk away from the first plane 232a.The influence that can effectively reduce to shake to cutting so is set, and promptly saw blade can pass said fluting, cut workpiece then; So saw blade and the vibrations of workpiece position contacting are the most violent; In this embodiment, against plate 232 only by the first plane 232a against workpiece, and the second plane 232c can be towards the direction perk away from workpiece; Can not come in contact thereby make with the most violent zone of vibrations against plate 232; Thereby reduced the vibrations of base plate 230, and then reduced the vibrations that pass to portable cutter by base plate 230, improved user's comfort greatly.
Supporting component and saw blade that aforementioned a plurality of embodiment is introduced; Can be separately as a cover accessory product; Owing to adopted the mode of socket that base plate is mounted on the portable cutter; Therefore need the housing of portable cutter not improved, have extensive applicability, brought facility to the user.Certainly; The saw blade that is used with said base plate is not limited to the structure of aforementioned introduction, can also adopt other saw blade, like saw blade, straight blade or the like; Do not enumerate one by one at this, just can use as long as according to actual needs said base plate is carried out simple modification.
Further; Supporting component in the 5th embodiment to the seven embodiments can adopt also that supporting component has the structure of the base plate of position adjustable in first embodiment; Supporting component of introducing when aforementioned a plurality of embodiments thus and saw blade are during separately as accessory product; Through making the base plate adjustable positions of supporting component, thereby make the supporting component can adaptive a greater variety of saw blades.
What it may occur to persons skilled in the art that is, the concrete structure of the portable cutter among the present invention can have a lot of versions, but major technique characteristic and the present invention of the used technical solution are same or similar, all should be covered by in the protection domain of the present invention.
Claims (10)
1. the saw blade of a portable cutter, said portable cutter comprises:
Housing;
Part is stretched out the swing output shaft of said housing and output swing;
Be housed in the motor in the said housing, and output is rotated;
The rotation of said motor is converted into the transmission mechanism of the swing of said swing output shaft;
Said saw blade comprises:
Connecting portion, it has the installing hole that is mounted to said swing output shaft, and said connecting portion has first limit and second limit that longitudinally extends and is oppositely arranged;
It is characterized in that said saw blade also comprises:
On said connecting portion along said first limit to the extended base portion of direction on said second limit, said base portion has cutting part along said connecting portion longitudinally away from a side of said installing hole.
2. according to the saw blade of the said portable cutter of claim 1, it is characterized in that: said base portion is the part on the said connecting portion of protrusion second limit.
3. according to the saw blade of the said portable cutter of claim 2, it is characterized in that: the only extremely direction on said second limit extension of said base portion along said first limit.
4. according to the saw blade of the said portable cutter of claim 3, it is characterized in that: said base portion is 2 millimeters to 80 millimeters along the length span of himself bearing of trend.
5. according to the saw blade of the said portable cutter of claim 1, it is characterized in that: said base portion evenly distributes along the width of himself bearing of trend.
6. according to the saw blade of the said portable cutter of claim 5, it is characterized in that: said width span is 5 millimeters to 11 millimeters.
7. according to the saw blade of the said portable cutter of claim 1, it is characterized in that: said cutting part is made up of sawtooth, and sawtooth tilts to extend with respect to said base portion, and its bearing of trend is towards said first limit.
8. according to the saw blade of the said portable cutter of claim 1, it is characterized in that: said cutting part is made up of sawtooth, and the crown of said sawtooth forms an arc line of cut.
9. the saw blade of said portable cutter according to Claim 8, it is characterized in that: said base portion extends along straight line back to the sidewall of cutting part.
10. a portable cutter is used for processing work, comprising:
Housing;
Part is stretched out the swing output shaft of said housing and output swing;
Be housed in the motor in the said housing, and output is rotated;
The rotation of said motor is converted into the transmission mechanism of the swing of said swing output shaft;
It is characterized in that: the hunting frequency of said swing output shaft is more than or equal to 20000 times/minute, and said swing output shaft is equipped with like the arbitrary said saw blade of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102378904A CN102423816A (en) | 2010-08-18 | 2011-08-18 | Saw blade of portable cutting machine and portable cutting machine using same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010264483 | 2010-08-18 | ||
| CN201010264483.8 | 2010-08-18 | ||
| CN2011102378904A CN102423816A (en) | 2010-08-18 | 2011-08-18 | Saw blade of portable cutting machine and portable cutting machine using same |
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| CN102423816A true CN102423816A (en) | 2012-04-25 |
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| CN2011102378904A Pending CN102423816A (en) | 2010-08-18 | 2011-08-18 | Saw blade of portable cutting machine and portable cutting machine using same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014195174A1 (en) * | 2013-06-03 | 2014-12-11 | Kwb Tools Gmbh | Tool for machining a workpiece |
| CN108340010A (en) * | 2018-04-23 | 2018-07-31 | 芜湖市默煜轩包装制品有限公司 | A kind of machine components cutter device for preventing cutting blade from deviating |
| US10478908B2 (en) * | 2016-10-28 | 2019-11-19 | Robert Bosch Tool Corporation | Oscillating jig saw blade |
| DE102019212706A1 (en) * | 2019-08-23 | 2021-02-25 | Robert Bosch Gmbh | Sawing tool |
| EP4032646A1 (en) * | 2021-01-22 | 2022-07-27 | Black & Decker, Inc. | Accessories for oscillating power tools |
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| US20030070307A1 (en) * | 2001-09-29 | 2003-04-17 | Andrew Walker | Power tool |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014195174A1 (en) * | 2013-06-03 | 2014-12-11 | Kwb Tools Gmbh | Tool for machining a workpiece |
| US10478908B2 (en) * | 2016-10-28 | 2019-11-19 | Robert Bosch Tool Corporation | Oscillating jig saw blade |
| CN108340010A (en) * | 2018-04-23 | 2018-07-31 | 芜湖市默煜轩包装制品有限公司 | A kind of machine components cutter device for preventing cutting blade from deviating |
| DE102019212706A1 (en) * | 2019-08-23 | 2021-02-25 | Robert Bosch Gmbh | Sawing tool |
| EP4032646A1 (en) * | 2021-01-22 | 2022-07-27 | Black & Decker, Inc. | Accessories for oscillating power tools |
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Application publication date: 20120425 |