CN102814793B - Power tool and be applied to working head and the adapter of this power tool - Google Patents
Power tool and be applied to working head and the adapter of this power tool Download PDFInfo
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- CN102814793B CN102814793B CN201110153844.6A CN201110153844A CN102814793B CN 102814793 B CN102814793 B CN 102814793B CN 201110153844 A CN201110153844 A CN 201110153844A CN 102814793 B CN102814793 B CN 102814793B
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- 238000010276 construction Methods 0.000 claims description 38
- 238000010586 diagram Methods 0.000 description 19
- 238000003825 pressing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000002452 interceptive effect Effects 0.000 description 2
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- 229910001651 emery Inorganic materials 0.000 description 1
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Abstract
The present invention discloses a kind of power tool and is applied to working head and the adapter of this power tool, this power tool has for installment work head and drives the cephalomotor output shaft of described work, and described output shaft terminal shaft is to the drive division being extended with at least one and described working head and connecting.Wherein, described drive division comprises at least two projections, and described projection is at least divided into first protruding and the second projection, and described first is not protruding identical with the cross section of described second projection.Because the cross section of different layers projection is not identical, therefore the protruding wearing and tearing be subject to of different layers are not identical yet, after wherein one deck projection is worn and lost efficacy, the projection of other layer still can transmitting torque, thus substantially increases the service life of power tool and the working head be mated and adapter.
Description
Technical field
The present invention relates to a kind of can the power tool of installment work head, specifically can drive the output shaft of the cephalomotor power tool of above-mentioned work.
The invention still further relates to the working head of the output shaft that can be installed on above-mentioned power tool.
The present invention relates to two kinds of adapters in addition, a kind of is that the working head that the output shaft with above-mentioned power tool does not match is connected to above-mentioned power tool, another kind is connected on the output shaft of the power tool do not matched with it by above-mentioned working head, and the moment of torsion of power tool is passed to working head.
Background technology
Multi Role Aircraft is the swing class power tool of the common hand-held of industry, and to be output shaft do oscillating motion around self axial line for its operation principle, thus drive the operate accessories head oscillating motion being arranged on output shaft end.Common operate accessories head comprises straight blade, saw blade, triangle frosted dish and spade-type scraper etc.Therefore, after user is provided with different operate accessories heads on output shaft, multiple different operating function can be realized, as sawed, cutting, grind, scrape, to adapt to different work requirements.
Since Multi Role Aircraft has multiple detachable and working head that is that mutually change, so how fast, dismantlement work head easily and safely, just become the problem that a preecedence requirement solves.To this, industry has carried out active research, and has occurred several different interface scheme.
Such as, U.S. Patent Bulletin the 6th, 796, No. 888 and the 6th, 945, No. 862 interface schemes disclosing a kind of Multi Role Aircraft installment work head.As shown in Figure 1, in scheme disclosed in above-mentioned two sections of patents, working head 80 is a kind of straight blade specifically, and it is fixed on the output shaft 83 of multi-functional main frame 82 by securing member 81.Specifically, working head 80 offers the star-shaped openings 84 with eight fillets, and connect continuously between fillet.Accordingly, the end radial direction of output shaft 83 is protruded and is extended with four fillet type projections 85.When working head 80 is mounted to output shaft 83, star-shaped openings 84 is set in the round projection 85 of output shaft 83 just.When multi-functional main frame 82 works, output shaft 83 by protruding 85 with the coordinating of star-shaped openings 84, transfer a torque to working head 80, thus drive working head 80 rotates reciprocally swinging.
In addition, another is disclosed in No. 20080190259th, US publication application with different another interface scheme of above-mentioned interface scheme.In this interface scheme, the terminal shaft of the output shaft 91 of multi-functional main frame 90 to having protruded out some rectangular preiections 92, these projections 92 be evenly distributed on the axle center of output shaft 91 for the center of circle circumferentially.Accordingly, straight blade 93 offers some rectangular apertures 94 that can mate with above-mentioned protruding 92.It is after 90s that straight blade 93 is mounted to multi-functional main frame, and fixed by securing member 95, some protruding 92 of output shaft 91 is housed in the opening 94 of straight blade 93 respectively.When multi-functional main frame 90 works, output shaft 91 is coordinated by some rectangular preiections 92 and some rectangular apertures 94, transfers a torque to straight blade 93, thus drives straight blade 93 to rotate reciprocally swinging.
In the first interface scheme above-mentioned, protruding 85 quantity of the round on output shaft 83 are four, and size, shape are identical; In the second interface scheme, rectangular preiection 92 quantity of output shaft 91 is 12, and size, shape are also identical.Because the protruding size in above-mentioned often kind of interface scheme, shape are all identical.In use procedure, the wearing and tearing that each projection is subject to are also identical, therefore make be restricted the service life of output shaft.Equally, also there are the problems referred to above in the working head matched or adapter.
Therefore, be really necessary the Multi Role Aircraft interface that a kind of improvement is provided, comprise power tool and be applied to working head and the adapter of this power tool.
Summary of the invention
An object of the present invention is to provide a kind of power tool, the longer service life of this power tool.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is as follows: a kind of power tool, have for installment work head and drive the cephalomotor output shaft of described work, described output shaft terminal shaft is to the drive division being extended with at least one and described working head and connecting; Wherein, described drive division comprise at least two adjacent and spaced first protruding and second protruding, described first projection is not identical with the cross section of described second projection.
Preferably, described first is not protruding identical with the shape of cross section of described second projection.
Preferably, described first is protruding identical with the shape of cross section of described second projection, but vary in size.
Preferably, the quantity of described drive division is at least two, and is evenly distributed on described output shaft circumferentially.
Preferably, the quantity of described drive division is eight.
Preferably, described first protruding and described second projection at least part of overlap in the radial direction of described output shaft.
Preferably, the line at the center of described first protruding and described second projection is without the axial line of described output shaft.
Preferably, the axial height of described first protruding and described second projection is not etc.
Preferably, the shape of the cross section of described projection is that in circle, ellipse, rectangle, trapezoidal, triangle, arch any one is at least partially.
Second object of the present invention is to provide a kind of working head being installed on above-mentioned power tool, the longer service life of this working head.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is as follows: a kind of working head, the output shaft of the invention described above power tool can be installed on, this working head comprises the construction section connected with described output shaft, described construction section offers the shape connected with the drive division of described output shaft and joins portion; Wherein, the described shape portion of joining at least comprises first auxiliary section and the second auxiliary section of engaging with described first projection and described second projection respectively, and described first auxiliary section is not identical with the cross section of the second auxiliary section.
Preferably, the described shape portion of joining has the first separate installing hole and the second installing hole, and described first installing hole is described first auxiliary section, and described second installing hole is described second auxiliary section.
Preferably, described first installing hole is not identical with the shape of cross section of described second installing hole.
Preferably, described first installing hole is identical with the shape of cross section of described second installing hole, but varies in size.
Preferably, described first installing hole and the second installing hole are overlapping at least partly in the radial direction of described output shaft.
Preferably, described construction section has outward flange, and the first installing hole runs through described outward flange, and forms breach on described outward flange.
Preferably, described construction section offers centre bore, and described second installing hole runs through described centre bore, and is communicated with described centre bore.
Preferably, the shape of the cross section of described first installing hole and the second installing hole is that in circle, ellipse, rectangle, trapezoidal, triangle and arch any one is at least partially.
Preferably, the described shape portion of joining has the single installing hole of the described drive division of collecting, and described first auxiliary section and described second auxiliary section are all arranged on described installing hole.
Preferably, the quantity that described shape joins portion is at least two, and distributes along the even circumferential of described output shaft.
Preferably, described shape joins the quantity in portion is eight.
Preferably, the line at the center of described first auxiliary section and described second auxiliary section is without the axial line of described output shaft.
Preferably, the described shape portion of joining has three layers of separate installing hole, is respectively: the first installing hole, the second installing hole and the middle level installing hole be located between the first installing hole and the second installing hole.
3rd object of the present invention is to provide a kind of adapter, working head provided by the present invention can be mounted on power tool that output shaft can not directly connect with above-mentioned working head.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is as follows: a kind of adapter, and for working head of the present invention being mounted to the output shaft of power tool, described output shaft can not directly mate with described working head; Described adapter has the first change-over terminal connected with described output shaft and the second change-over terminal connected with described working head, and the terminal shaft of described second change-over terminal is to the second switching part being extended with at least one and described working head and connecting; Wherein, described second switching part comprise at least two adjacent and spaced first protruding and second protruding, described first projection is not identical with the cross section of described second projection.
Preferably, described second switching part is at least two, and is evenly distributed on described output shaft respectively circumferentially.
Preferably, the quantity of described drive division is eight.
Preferably, described first protruding and described second projection at least part of overlap in the radial direction of described output shaft.
Preferably, the line at the center of described first protruding and described second projection is without the axial line of described output shaft.
Preferably, the axial height of described first protruding and described second projection is not etc.
Preferably, the shape of the cross section of described first protruding and described second projection is that in circle, ellipse, rectangle, trapezoidal, triangle and arch any one is at least partially.
4th object of the present invention is to provide a kind of adapter, the working head that can not directly connect with the output shaft of power tool of the present invention can be mounted on power tool of the present invention.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is as follows: a kind of adapter, and for working head being mounted to the output shaft of power tool of the present invention, described working head can not directly mate with described output shaft; Described adapter has the first change-over terminal connected with described output shaft and the second change-over terminal connected with described working head, the first switching part that the terminal shaft of described first change-over terminal connects to the drive division being arranged with at least one and described output shaft; Wherein, described first switching part at least comprises first auxiliary section and the second auxiliary section of engaging with described first projection and described second projection respectively, and described first auxiliary section is not identical with the cross section of the second auxiliary section.
Preferably, described first switching part has the first separate groove and the second groove, and described first groove is described first auxiliary section, and described second groove is described second auxiliary section.
Preferably, described first groove and the second groove are overlapping at least partly in the radial direction of described output shaft.
Preferably, described first change-over terminal has outward flange, and described first groove runs through described outward flange, and forms breach on described outward flange.
Preferably, described adapter offers centre bore, and described second groove runs through described centre bore, and is communicated with described centre bore.
Preferably, the shape of the cross section of described first groove and the second groove is that in circle, ellipse, rectangle, trapezoidal, triangle and arch any one is at least partially.
Preferably, described first switching part has the single groove of the described drive division of collecting, and described first auxiliary section and described second auxiliary section are all arranged on described groove.
Preferably, the quantity of described first switching part is at least two, and distributes along the even circumferential being the center of circle with the axle center of described output shaft.
Preferably, the quantity of described first switching part is eight.
Preferably, the line at the center of described first auxiliary section and described second auxiliary section is without the axial line of described output shaft.
Compared with prior art, the invention has the beneficial effects as follows: by the output shaft end at power tool, at least two-layer projection with not identical cross-section is set, correspondingly, the construction section of corresponding working head arranges the installing hole that two-layer cross section is not identical, or the not identical two-layer projection of cross section or groove are set on corresponding adapter, at least two-layer projection of output shaft or adapter end is coordinated respectively with at least two-layer installing hole of working head.In actual applications, because the cross section of different layers projection is not identical, therefore the protruding wearing and tearing be subject to of different layers are not identical yet, after wherein one deck projection is worn and lost efficacy, the projection of other layer still can transmitting torque, thus substantially increases the service life of power tool, working head and adapter.
Accompanying drawing explanation
Fig. 1 is the perspective exploded view of a kind of Multi Role Aircraft in prior art.
Fig. 2 is the perspective exploded view of another kind of Multi Role Aircraft in prior art.
Fig. 3 is the perspective exploded view of Multi Role Aircraft in first embodiment of the invention.
Fig. 4 is the schematic diagram of the main frame of Multi Role Aircraft shown in Fig. 3.
Fig. 5 is the schematic diagram of the working head of Multi Role Aircraft shown in Fig. 3.
Fig. 6 is the structural representation after the main frame of Multi Role Aircraft shown in Fig. 3 and working head cooperation.
Fig. 7 is the schematic diagram of multi-functional main frame in second embodiment of the invention.
Fig. 8 is the schematic diagram of working head in second embodiment of the invention.
Fig. 9 is the structural representation after the cooperation of working head shown in main frame multi-functional shown in Fig. 7 and Fig. 8.
Figure 10 is the schematic diagram of working head in third embodiment of the invention.
Figure 11 is the schematic diagram of working head in four embodiment of the invention.
Figure 12 is the schematic diagram of working head in fifth embodiment of the invention.
Figure 13 is the schematic diagram of working head in sixth embodiment of the invention.
Figure 14 is the schematic diagram of working head in seventh embodiment of the invention.
Figure 15 is the schematic diagram of working head in eighth embodiment of the invention.
Figure 16 is the schematic diagram of working head in ninth embodiment of the invention.
Figure 17 is the schematic diagram of working head in tenth embodiment of the invention.
Figure 18 is the schematic diagram of working head in eleventh embodiment of the invention.
Figure 19 is the structural representation of working head in twelveth embodiment of the invention.
Figure 20 is the Facad structure schematic diagram of adapter in twelveth embodiment of the invention.
The structure schematic diagram that Figure 21 is adapter shown in Figure 20.
Figure 22 is the structural representation of the output shaft of multi-functional main frame in thirteenth embodiment of the invention.
Figure 23 is the Facad structure schematic diagram of adapter in thirteenth embodiment of the invention.
The structure schematic diagram that Figure 24 is adapter shown in Figure 23.
Figure 25 is the structural representation of the output shaft of multi-functional main frame in fourteenth embodiment of the invention.
The axial front view that Figure 26 is output shaft shown in Figure 25.
Figure 27 is the schematic diagram of working head in fifteenth embodiment of the invention.
Wherein, related elements reference numeral is listed as follows:
100. Multi Role Aircraft 114. centre bore 27. construction sections
10. main frame 115. shape is joined portion 271. shape and is joined portion
101. housing 116. first installing hole 272. first auxiliary sections
102. output shaft 117. second installing hole 273. second auxiliary sections
103. ring flange 118. outward flange 28. cut length
104. bottom surface 12. locking part 30. working heads
105. blind hole 121. bolt 301. construction sections
106. drive division 122. pressing plate 302. centre bores
107. first protruding 20. main frame 303. outward flanges
108. second protruding 21. output shaft 304. first installing holes
Protruding 305. second installing holes of 11. working heads 23. first
Protruding 306. shapes of 111. construction section 24. second join portion
112. cut length 25. drive division 31. working heads
113. step section 26. working head 311. construction sections
312. centre bore 361. shapes join portion 501. ring flange
313. shapes join portion 362. first installing hole 502. drive division
314. first installing hole 363. second installing hole 503. drive divisions
315. second installing hole 37. working head 51. adapters
316. middle level installing hole 371. shapes join portion 511. second change-over terminal
32. working head 372. first installing holes 512. first are protruding
It is protruding that 321. shapes join portion 373. second installing hole 513. second
322. first installing hole 38. working head 514. first switching parts
323. second installing hole 381. shapes join portion 515. first change-over terminal
33. working head 382. first installing hole 516. second switching parts
331. shapes join portion 383. second installing hole 60. output shaft
332. first installing hole 40. working head 61. ring flanges
333. second installing hole 401. construction section 62. drive divisions
34. working head 402. cut length 63. are outer protruding
It is protruding that 341. shapes join portion 403. installing hole 64. internal layer
342. first installing hole 41. adapter 65. inclined-planes
343. second installing hole 411. first change-over terminal 70. working heads
344. middle level installing hole 412. first groove 71. construction sections
35. working head 413. second groove 72. cutting parts
351. shapes join portion 414. first switching part 73. centre bore
352. first installing hole 415. second change-over terminal 74. shapes join portion
The outer installing hole of 353. second installing hole 416. second switching part 75.
354. middle level installing hole 42. adapter 76. internal layer installing holes
36. working head 50. output shaft 77. notch parts
Detailed description of the invention
Below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail.
One of the object of the invention is to provide one to can be applicable to oscillating-type power tool (as Multi Role Aircraft) or rotary-type grinding power tool (as sander), and provide stable, high pulling torque transmit new interface scheme.At least two-layer projection is set by the output shaft end at power tool, and makes the cross section of two-layer projection not identical; Correspondingly, corresponding working head or adapter arrange at least two auxiliary sections connected respectively with the projection of above-mentioned output shaft, thus by protruding engaging with auxiliary section, make the coordinating more closely of output shaft and working head or adapter, stable, the service life of output shaft, working head and adapter can be improved simultaneously.It is pointed out that " cross section is not identical " described in this description comprises two kinds of situations, a kind of shape difference referring to cross section; Another kind refers to that the shape of cross section is identical, but varies in size.
Refer to shown in Fig. 3, disclose a kind of swing-type power tool in the first embodiment of the present invention, i.e. Multi Role Aircraft 100.This Multi Role Aircraft 1 comprises main frame 10, can install on host 10 and the working head 11 driven by main frame 10, and by fixing for working head 11 locking part 12 on host 10.In present embodiment, working head 11 is a kind of straight blade, for a person skilled in the art, is easy to expect, working head 11 also can be other annex, as saw blade, emery disc, scraper etc.
The moment of torsion of the exportable rotary reciprocating motion of main frame 10, it is included in the housing 101 shown in part and output shaft 102 in Fig. 3.Output shaft 102 is longitudinally arranged at the inside of housing 101, and its end extends housing 101 certain distance.Be provided with motor (not shown) in housing 101 and be connected to the eccentric drive mechanism (not shown) between the motor shaft of motor and output shaft 102, motor shaft drives output shaft 102 by eccentric drive mechanism, and makes output shaft 102 rotate oscillating traverse motion around the central axis X of himself.Eccentric drive mechanism is the common structure that industry is applied to swing-type power tool, and in this not go into detail.
In present embodiment, when main frame 10 works, make output shaft 102 rotate oscillating traverse motion around its central axis X with the high-frequency of about 5000 to 30000 times per minute, and be maintained at about the little pendulum angle between 0.5 to 7 degree.
Locking part 12 is through working head 11 and then be connected in output shaft 102, thus working head 11 is fixed on the end of output shaft 102.This locking part 12 comprises bolt 121 and is set in the pressing plate 122 on bolt 121.In present embodiment, pressing plate 122 is an elastomeric pad, and relatively with bolt 121 is fixedly connected with, and can not be split.After locking part 12 is tightened, pressing plate 122 resilient abutment, in 2 sides of working head 11, can prevent owing to causing working head 11 to get loose when reciprocal even impact type load.
In order to make to be connected with can having matching structure between working head 11 with output shaft 102, the end of output shaft 102 is typically provided with special shape.In present embodiment, the end of output shaft 102 is provided with the larger ring flange of diameter 103.Ring flange 103 is circular, and it has the bottom surface 104 perpendicular to output shaft 102, offers run through ring flange 103 and the blind hole 105 extended along the axial line of output shaft 102 from the center of bottom surface 104.Locking part 12, through after working head 11, is housed in above-mentioned blind hole 105, thus is fixed on output shaft 102 by working head 11.
Ring flange 103 is axially extended with drive division 106 from bottom surface 104, for connect with working head 11 and transmitting torque to working head 11.In present embodiment, drive division 106 is axially extended some projections, these protruding regular array on bottom surface 104, and being circumferentially uniformly distributed of being the center of circle with the axle center of output shaft 105.Above-mentioned projection is specifically divided into two-layer: the first protruding 107 and second projection 108, wherein, it is the center of circle first circumferentially that first projection 107 is distributed in the axle center of output shaft, the second projection 108 be distributed in the axle center of output shaft for the center of circle and diameter little compared with the first circumference second circumferentially.Each first protruding 107 forms one group be adjacent second protruding 108, and form a drive division 106, obviously, in present embodiment, the quantity of drive division 106 has eight.
Concrete reference diagram 4, the axle center of output shaft 102 is C1, and the center of the first projection 107 is C2, and the center of the second projection 108 is C3.In present embodiment, the cross section of two projections is not identical, wherein, the cross section of the first projection 107 is roughly in arch, the cross section of the second projection 108 is roughly triangular in shape, and both quantity are eight, is evenly distributed on respectively with the axle center C1 of output shaft 102 as the center of circle, radius is respectively on circumference D1 and D2 of R1 and R2, and with layer protruding adjacent between angle be 45 degree.In addition, stagger between two-layer projection certain angle, and the line between adjacent protrusion center is not by the axial line X of output shaft 102, and the angle between each first protruding 106 and the second projection 107 be adjacent is 22.5 degree.
As seen from Figure 3, in present embodiment, the axial height of outer projection 107 and internal layer projection 108 is unequal, and outer protruding 107 higher than internal layer projection 108.Adopt this structure, can when mounted, prevent internal layer projection 108 from interfering with the pressing plate of locking part 12 on the one hand, thus ensure that the overall axial height installing rear power tool 100 is unlikely to too high; On the other hand, internal layer projection 108 can play support works head, and working head is only engaged with skin protruding 107.
With reference to figure 3 to Fig. 5, working head 11 is arranged on the end of output shaft 102, the construction section 111 that it comprises with output shaft 102 the connects cut length 112 parallel with construction section 111, step section 113 between construction section 111 and cut length and the centre bore 114 passed for locking part 12.In order to connect with output shaft 102, construction section 111 offers the shape connected with the corresponding drive division 106 of output shaft 102 and join portion 115, shape is joined 115, portion and is had first auxiliary section and the second auxiliary section of engaging respectively with the first of above-mentioned drive division 106 protruding 107 and second projection 108.In present embodiment, specifically arranging of construction section 111 is as follows, in the periphery of centre bore 114, be provided with two-layer installing hole: the first installing hole 116 and the second installing hole 117, first protruding 107 of first installing hole 116 and output shaft 102 correspondingly connects, and second protruding 108 of the second installing hole 117 and output shaft 102 correspondingly connects.First installing hole 116 and the second installing hole 117 quantity are eight, separate setting, and corresponding center to the axle center C1 of output shaft 102 distance not etc.Each first installing hole 116 and the second installing hole 117 be adjacent form a shape and join portion 115, and wherein the first installing hole 116 is the first auxiliary section that above-mentioned shape joins portion 115, and the second installing hole 117 is the second auxiliary section that above-mentioned shape joins portion 115.
Because the construction section 111 of working head 11 connects with the ring flange 103 of output shaft 102, therefore, the shape of working head 11 is joined portion 115 and is mated with the shape of the drive division 106 of output shaft 102, and size and the position of the first installing hole 116 and the second installing hole 117 and the corresponding first protruding 107 and second projection 108 are corresponding.The shape of the drive division 106 of output shaft 102 and position are described in detail above, therefore the shape in portion 115 are joined to the shape of working head 11 below and simple description is only done in position.
First, the cross section of two-layer installing hole is not identical, and the shape of cross section of the first installing hole 116 is roughly in arch, and size is slightly larger than the first projection 107; The shape of cross section of the second installing hole is roughly triangular in shape, and size slightly larger than the second projection 108, thus ensures that the shape of working head 11 is joined portion 115 and reduced fit clearance with the drive division 106 of output shaft, coordinates tightr.The quantity of the first installing hole 116 (being equivalent to the first auxiliary section) and the second installing hole 117 (being equivalent to the second auxiliary section) is eight, and be evenly distributed on respectively with the axle center C1 of output shaft 102 as the center of circle, radius is respectively on circumference D1 and D2 of R1 and R2, and the angle between adjacent with layer installing hole is 45 degree.In addition, each shape is joined between first installing hole 116 in portion 115 and the second installing hole 117 and is staggered 22.5 degree, and the line between both centers is not by the axial line X of output shaft 102.
In addition, one end that the construction section 111 of working head 11 is relative with the sawtooth of cut length 112 has outward flange 118, has three the first installing holes 116 to run through this outward flange 118, and forms breach.Because part first projection 116 runs through outward flange 117, the construction section 111 of same size can be made, the center of the first projection 116 can be set to maximum to the distance of the axle center C1 of output shaft 102, thus the moment of torsion making output shaft 102 be passed to working head 11 by the first installing hole 116 is also maximum.
In above-mentioned embodiment, first projection 107 of the drive division 106 of output shaft 102 is roughly in arch, second projection 108 is roughly triangular in shape, the shape of working head 11 is joined 115, portion and is had the first installing hole 116 and the second installing hole 117 coordinated with drive division 106, and shape is consistent with the first protruding 107 and second projection 108 respectively.To those skilled in the art, be readily appreciated that, shape of cross section that is protruding and installing hole is not limited to arch and triangle, also can be circular, oval, rectangle or trapezoidal in one, and the shape of working head is joined portion 115 and also can be arranged to an independent installing hole, as long as this installing hole has respectively with first protruding 107 of drive division 106 and interiorly lead protruding 108 the first auxiliary section coordinated and the second auxiliary sections.Specifically please refer to second embodiment of the invention as shown in Figure 7 to 10, hereafter will be described in detail.
As shown in Figure 7, in the second embodiment, the main frame 20 of Multi Role Aircraft, its output shaft 21 is provided with ring flange 22 equally, and ring flange 22 terminal shaft is to being extended with some projections.These projections are divided into two-layer equally: the first protruding 23 and second projection 24, the center of two-layer projection lay respectively at the axle center C4 of output shaft 21 for the center of circle circumferentially.Each first protruding 23 forms a drive division 25 be adjacent second protruding 24, is with the first embodiment difference, and the cross section of the first projection 23 is circular, and the cross section of the second projection 24 is oval.
As shown in Figure 8 and Figure 9, in the second embodiment, there is the working head 26 being similarly straight blade.This working head 26 has the construction section 27 connected with output shaft 21 and the cut length 28 extended from construction section side, and construction section 27 has the shape coordinated with the drive division 25 of output shaft 21 and joins portion 271.Be with the difference of the first embodiment, it is independent installing holes that shape joins portion 271, and shape is joined portion 271 and had the first auxiliary section 272 and the second auxiliary section 273 be located on this installing hole.When connecting with output shaft 21, shape joins first auxiliary section 272 in portion 271 and the second auxiliary section 273 is engaged with first protruding 23 and second protruding 24 of drive division 25 respectively, thus ensure that output shaft 21 can join coordinating of portion 271 by drive division 25 with the shape of working head 11, required enough moments of torsion are passed to working head 11.
As described in first, second embodiment above-mentioned, the new interface scheme of power tool of the present invention, by arranging at output the tip of the axis the drive division be made up of at least two-layer projection, and the shape of cross section of two-layer projection is not identical; And the shape connected with above-mentioned drive division is set on corresponding working head joins portion, the first auxiliary section and the second auxiliary section that the shape portion of joining are had at least engage with the two-layer projection of drive division, the first auxiliary section is same with the shape of cross section of the second auxiliary section not identical.After working head is mounted to output shaft, because the cross section of different layers projection is not identical, therefore the protruding wearing and tearing be subject to of different layers are not identical yet, after wherein one deck projection is worn and lost efficacy, the projection of other layer still can transmitting torque, thus substantially increases the service life of power tool, working head and adapter.
It may be noted that the structure that the output shaft of power tool of the present invention is not limited to above-mentioned embodiment and limits.For a person skilled in the art, be easy to expect, each drive division of output shaft can have plural projection.Such as, drive division is made up of three projections, and three protruding cross sections are all not identical, or two convex cross section are wherein identical, and not identical with the 3rd protruding cross section.Correspondingly, each shape portion of joining of the working head connected with output shaft then has three auxiliary sections coordinated respectively with above-mentioned three projections respectively.Below in conjunction with Figure 10 to Figure 17, concise and to the point nine kinds of deformations of setting forth working head in embodiment of the present invention three to ten one.
As shown in Figure 10, in the 3rd embodiment, working head 30 has construction section 301 and is located at the centre bore 302 in the middle part of construction section 301.Construction section 301 has outward flange 303, in the peripheral circumferential of centre bore 302, is provided with the two-layer installing hole that shape of cross section is different: eight the first installing holes 304 and eight the second installing holes 305.The second installing hole 305 that each first installing hole 304 is adjacent forms a shape and joins portion 306, and the drive division for the output shaft with medium power instrument of the present invention is matched.Be with aforementioned embodiments difference, the first installing hole 304 and the second installing hole 305 are ellipse, just differ in size.In addition, formed except breach except three the first installing holes 304 run through outward flange 303, the second installing hole 305 runs through centre bore 302 at interval of one, and is communicated with centre bore 302.
Working head 31 in 4th embodiment shown in Figure 11 is similar to the structure of working head 30 shown in Figure 10, has construction section 311 and centre bore 312.Difference is, its each shape is joined portion 313 and is made up of three installing holes: the first installing hole 314, second installing hole 315 and the middle level installing hole 316 between the first installing hole 314 and the second installing hole 315.First installing hole 314 is similarly oval, and middle level installing hole 316 and the second installing hole 315 are an oval part, and eight the second installing holes 315 run through construction section at interval of one.
Working head 32 in 5th embodiment shown in Figure 12 is similar to the structure of working head 30 shown in Figure 10, and each shape is joined portion 321 and is made up of first installing hole 322 and second installing hole 323, and difference is, the shape of the second installing hole 323 is triangle.
Working head 33 in 6th embodiment shown in Figure 13 is similar to the structure of working head 30 shown in Figure 10, and each shape is joined portion 331 and is made up of first installing hole 332 and second installing hole 333, and difference is, the shape of the first installing hole 332 is triangle.
Working head in 7th embodiment shown in Figure 14 34 is similar to the structure of working head 31 shown in Figure 11, and each shape is joined portion 341 and had three layers of installing hole equally: the first installing hole 342, second installing hole 343 and the middle level installing hole 344 between the first installing hole 342 and the second installing hole 343.Difference is, the shape of the first installing hole 342 is triangle.
Working head 35 in 8th embodiment shown in Figure 15 is similar to the structure of working head 34 shown in Figure 14, and each shape is joined portion 351 and had three layers of installing hole equally: the first installing hole 352, second installing hole 353 and the middle level installing hole 354 between the first installing hole 352 and the second installing hole 353.The shape of the first installing hole 352 is also triangle, and difference is only with the first installing hole 342 of working head 34 towards the opposite.
Working head 36 in 9th embodiment shown in Figure 16 is similar to the structure of working head 33 shown in Figure 13, each shape is joined portion 361 and is made up of first installing hole 362 and second installing hole 363, the shape of the first installing hole 352 is also triangle, and difference is only with the first installing hole 332 of working head 33 towards the opposite.
Working head in tenth embodiment shown in Figure 17 37 is similar to the structure of working head 32 shown in Figure 12, and each shape is joined portion 371 and is made up of first installing hole 372 and second installing hole 373, and difference is, the shape of the first installing hole 372 is triangle.
Working head in 11 embodiment shown in Figure 18 38 is similar to the structure of working head 37 shown in Figure 17, each shape is joined portion 381 and is made up of first installing hole 382 and second installing hole 383, the shape of the first installing hole 382 is also triangle, and difference is only with the first installing hole 372 of working head 37 towards the opposite.
Above describe the output shaft of power tool of the present invention and the working head of different structure in detail, and suppose that the shape of the drive division of output shaft can be mated with the shape portion of joining of working head, directly working head can be mounted to output shaft.In reality, often there is the situation that in output shaft and working head, shape does not match, just needing, an adapter is set in this case between working head and output shaft and carrys out transmitting torque.Below in conjunction with Figure 19 to Figure 24, the adapter in the present invention the 12 and 13 embodiment is described in detail.
Be readily appreciated that, the situation that output shaft and working head do not match has two kinds, a kind of structure that to be the drive division of output shaft be described in first embodiment of the invention, at least there is the two-layer distance of shaft centers to output shaft from the projection do not waited, and the shape portion of joining of working head is other shape, can not be matched with the drive division of output shaft.The another kind of situation structure that to be the shape portion of joining of working head be described in the first embodiment, at least have the installing hole that the two-layer axial line to output shaft distance does not wait, and the drive division of output shaft is other shape, can not connect with the shape portion of joining of working head.
For the first situation, adapter of the present invention arranges the not identical groove of at least two-layer cross section that can connect with the drive division of output shaft towards one end of output shaft, the other end towards working head then arranges the switching part that can connect with the shape portion of joining of working head.For second case, adapter arranges the not identical projection of at least two-layer cross section that can connect with the shape portion of joining of working head towards one end of working head, the other end towards output shaft then arranges the switching part that can connect with the drive division of output shaft.
As shown in Figure 19 to Figure 21, in twelveth embodiment of the invention, the output shaft of power tool is the output shaft 102 above in the first embodiment, and working head 40 is then different from the working head 11 in the first embodiment.Working head 40 comprises construction section 401 and cut length 402, and its construction section 401 only has the positive dodecagon installing hole 403 being opened in central authorities.Therefore, working head 40 can not directly be mounted to output shaft 102, needs to apply adapter 41.Adapter 41 is roughly in circular, and it has the first change-over terminal 411 towards output shaft 102.First change-over terminal 411 is provided with some grooves: the first groove 412 and the second groove 413, and connects with the first protruding 107 and second projection 108 of output shaft 102 respectively.Each first groove 412 and the second groove 413 be adjacent form one group, consist of first switching part 414, therefore form eight the first switching parts 414 altogether, match respectively with eight drive divisions 106 of output shaft 102.The shape of the drive division 106 of the output shaft 102 of the first embodiment and structure are described in detail above, are consistent with structure with drive division 106 due to the shape of the first switching part 414, therefore repeat in this difference.
In the second change-over terminal 415 that adapter 41 is relative with its first change-over terminal 411, the second switching part 416 is extended with to outstanding from central shaft, in present embodiment, the second switching part 416 is hollow positive six side's boss, thus can connect with the positive dodecagon installing hole 403 of working head 40.
Be appreciated that adapter of the present invention is not limited to said structure, as long as its first switching part has the first auxiliary section connected with the first projection of output shaft and the second auxiliary section connected with the second projection.Therefore, the first switching part also can be arranged to an independent groove, and the first auxiliary section and the second matching part are in this independent groove.In addition, the second switching part of adapter also can be other shape, star projection as shown in Figure 1 and the circle rectangular preiection shown in Fig. 2, thus the working head in Fig. 1, Fig. 2 can be connected to the output shaft of power tool of the present invention by adapter of the present invention.
As shown in Figure 12 to Figure 24, in thirteenth embodiment of the invention, working head is the working head 11 above in the first embodiment, and the output shaft 50 of power tool is then different from the output shaft 102 in the first embodiment.Output shaft 50 comprises ring flange 501, and this ring flange 501 is extended with drive division 502 from terminal shaft to outstanding, is hollow six side's convex.Therefore, working head 11 can not directly be mounted to output shaft 50, needs to apply adapter 42.Adapter 42 is roughly in circular, and it has the second change-over terminal 511 towards working head 11.Axially outstandingly in second change-over terminal 511 is extended with some projections: the first protruding 512 and second projection 513, and connects with the first installing hole 116 of working head 11 and the second installing hole 117 respectively.Each first protruding 512 forms one group be adjacent second protruding 513, consists of first switching part 514, therefore forms eight the first switching parts 514 altogether, join portion 115 match respectively with eight shapes of working head 11.The shape of the drive division 106 of the output shaft 102 of the first embodiment and structure are described in detail above, because the shape of the first switching part 514 is identical with drive division 106 with structure, therefore at this, shape of the first switching part 514 and position are repeated no more.
In the first change-over terminal 515 that adapter 51 is relative with its second change-over terminal 511, from central shaft to being recessed to form the second switching part 516, in present embodiment, the second switching part 516 is positive six side's grooves, thus can connect with positive six side's convex drive divisions 503 of output shaft 50.
Be appreciated that, adapter of the present invention is not limited to said structure, when the structure change of working head, during as shape in embodiment three to ten one, first shape that is protruding and the second projection of the first switching part can correspondingly change, and also can comprise the projection of three or more.In addition, second switching part of adapter also can be other shape, a circle rectangular recess shown in star-shaped groove as shown in Figure 1 and Fig. 2, thus working head of the present invention can be connected on the output shaft of the power tool shown in Fig. 1 and Fig. 2 by adapter of the present invention.
The quantity of the drive division of the output shaft of power tool of the present invention is not limited to eight described in embodiment one, also can be other even number or odd number.As illustrated in figs. 25 and 26, in the 14 embodiment of the present invention, be with the difference of embodiment one, the bottom even of the ring flange 61 of output shaft 60 is distributed with four drive divisions 62.The center that each drive division 62 comprises the not identical skin of cross section protruding 63 and internal layer projection 64, two projection is equally to the distance of shaft centers of output shaft 60 from unequal.In addition, the top of internal layer projection 64 is provided with the inclined-plane 65 tilted towards the axle center of output shaft 60, can avoid the pressing plate 122 interfering with locking part 12 as shown in Figure 3 equally, reduces the overall axial height of power tool.
In first embodiment of the present invention, when installment work 11, need the bolt 121 of locking part 12 to remove from output shaft 102.As shown in figure 27, the cutting part 72 that the working head 70 in fifteenth embodiment of the invention comprises construction section 71 and extends from construction section 71 one end, the middle part of construction section 72 is provided with centre bore 73.The surrounding of the centre bore 73 of construction section 71 is evenly distributed with some shapes and joins portion 74, and shape is joined portion 73 and comprised outer installing hole 75 and internal layer installing hole 76 equally.Be with the difference of working head 11, one end of the relative cutting part 72 of construction section 71 offers the notch part 77 be communicated with centre bore 73.Because notch part 77 and centre bore 73 are through, therefore installment work 70 time, without the need to locking part 12 is disassembled completely from output shaft 102, only need from locking part 12 side, make notch part 77 by the bolt 121 of locking part, thus working head 70 is mounted on output shaft 102.
Above illustrate numerous embodiments of the present invention, comprise the output shaft of power tool, corresponding working head, and by both one of be connected to the adapter of output shaft or the working head do not matched with it respectively.Easy understand, core concept of the present invention is, for output shaft, its drive division has the not identical projection of at least two-layer cross section; For working head, the shape portion of joining of its construction section has first auxiliary section and the second auxiliary section of engaging with the two-layer projection of output shaft respectively, its shape portion of joining can be arranged to two independently installing holes, also can be an independent installing hole, as long as have the first not identical auxiliary section of cross section and the second auxiliary section simultaneously; For adapter, when for different working heads is mounted on output shaft of the present invention, only need to arrange the switching part coordinated with the drive division of output shaft in one end that adapter and output shaft connect, switching part can be two independently grooves, also can be an independent groove, as long as the male cooperation that switching part can be not identical with at least two-layer cross section of output shaft; When adapter is used for working head of the present invention to be mounted to the output shaft of different power tools, only need one end adapter and working head connected that the structure identical with the drive division of output shaft of the present invention is set.
Power tool of the present invention by arranging the not identical projection of at least two-layer cross section, the first auxiliary section that relative set cross section is not identical on working head and the second auxiliary section on output shaft.Because the cross section of different layers projection is not identical, therefore the protruding wearing and tearing be subject to of different layers are not identical yet, after wherein one deck projection is worn and lost efficacy, the projection of other layer still can transmitting torque, thus substantially increases the service life of power tool, working head and adapter.
Claims (7)
1. a working head, the output shaft of power tool can be installed on, described output shaft terminal shaft is to the drive division being extended with at least one and described working head and connecting, described drive division comprises at least two adjacent and spaced first protruding and the second projections, described first is not protruding identical with the cross section of described second projection, this working head comprises the construction section connected with described output shaft, described construction section offers the shape connected with the drive division of described output shaft and join portion, it is characterized in that: the described shape portion of joining at least comprises first auxiliary section and the second auxiliary section of engaging with described first projection and described second projection respectively, described first auxiliary section is not identical with the cross section of the second auxiliary section, the described shape portion of joining has the first separate installing hole and the second installing hole, and described first installing hole is described first auxiliary section, and described second installing hole is described second auxiliary section, described construction section has outward flange, and described first installing hole runs through described outward flange, and forms breach on described outward flange.
2. working head according to claim 1, is characterized in that: described first installing hole is not identical with the shape of cross section of described second installing hole.
3. working head according to claim 1, is characterized in that: described first installing hole is identical with the shape of cross section of described second installing hole, but varies in size.
4. working head according to claim 1, is characterized in that: the quantity that described shape joins portion is at least two, and distributes along the even circumferential of described output shaft.
5. working head according to claim 1, is characterized in that: the described shape portion of joining has three layers of separate installing hole, is respectively: the first installing hole, the second installing hole and the middle level installing hole be located between the first installing hole and the second installing hole.
6. an adapter, for the output shaft by being mounted to power tool as working head as described in arbitrary in claim 1 to 5, described output shaft can not directly mate with described working head, described adapter has the first change-over terminal connected with described output shaft and the second change-over terminal connected with described working head, the terminal shaft of described second change-over terminal is to the second switching part being extended with at least one and described working head and connecting, it is characterized in that: described second switching part comprises at least two adjacent and spaced first protruding and the second projections, described first is not protruding identical with the cross section of described second projection.
7. an adapter, for working head being mounted to the output shaft of power tool, described output shaft terminal shaft is to the drive division being extended with at least one and described working head and connecting, described drive division comprises at least two adjacent and spaced first protruding and the second projections, described first is not protruding identical with the cross section of described second projection, described working head can not directly mate with described output shaft, described adapter has the first change-over terminal connected with described output shaft and the second change-over terminal connected with described working head, the first switching part that the terminal shaft of described first change-over terminal connects to the drive division being arranged with at least one and described output shaft, it is characterized in that: described first switching part at least comprises first auxiliary section and the second auxiliary section of engaging with the first projection and the second projection respectively, described first auxiliary section is not identical with the cross section of the second auxiliary section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110153844.6A CN102814793B (en) | 2011-06-09 | 2011-06-09 | Power tool and be applied to working head and the adapter of this power tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110153844.6A CN102814793B (en) | 2011-06-09 | 2011-06-09 | Power tool and be applied to working head and the adapter of this power tool |
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| Publication Number | Publication Date |
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| CN102814793A CN102814793A (en) | 2012-12-12 |
| CN102814793B true CN102814793B (en) | 2015-08-19 |
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| CN201110153844.6A Expired - Fee Related CN102814793B (en) | 2011-06-09 | 2011-06-09 | Power tool and be applied to working head and the adapter of this power tool |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015101351A1 (en) * | 2014-01-06 | 2015-07-09 | 蔡吕乾 | Quick-assembly working head of multi-use tool |
| CN105522220A (en) * | 2015-12-30 | 2016-04-27 | 扬州昇业机械有限公司 | Multi-functional swing-type tool head |
| CN110238444A (en) * | 2019-07-15 | 2019-09-17 | 扬州昇业机械有限公司 | A kind of novel and multifunctional saw blade adapter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1795301A1 (en) * | 2005-12-12 | 2007-06-13 | Festool GmbH | Disc grinder and grinding disc with quick mount-and-release mechanism |
| CN201597020U (en) * | 2009-07-01 | 2010-10-06 | 蔡吕乾 | Working head of tilting tool |
| CN201659552U (en) * | 2010-03-19 | 2010-12-01 | 南京德朔实业有限公司 | Multifunctional tool adapter |
| CN201711949U (en) * | 2010-05-28 | 2011-01-19 | 南京德朔实业有限公司 | Adapter for adapting operation elements to shaft ends of power tools |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10225583A1 (en) * | 2002-06-10 | 2004-01-08 | Robert Bosch Gmbh | Tool holder and insert tool |
| US8197309B2 (en) * | 2009-07-22 | 2012-06-12 | Chung-Han Lee | Grinding wheel assembly |
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2011
- 2011-06-09 CN CN201110153844.6A patent/CN102814793B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1795301A1 (en) * | 2005-12-12 | 2007-06-13 | Festool GmbH | Disc grinder and grinding disc with quick mount-and-release mechanism |
| CN201597020U (en) * | 2009-07-01 | 2010-10-06 | 蔡吕乾 | Working head of tilting tool |
| CN201659552U (en) * | 2010-03-19 | 2010-12-01 | 南京德朔实业有限公司 | Multifunctional tool adapter |
| CN201711949U (en) * | 2010-05-28 | 2011-01-19 | 南京德朔实业有限公司 | Adapter for adapting operation elements to shaft ends of power tools |
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