CN103963024B - Power tool - Google Patents
Power tool Download PDFInfo
- Publication number
- CN103963024B CN103963024B CN201310036857.4A CN201310036857A CN103963024B CN 103963024 B CN103963024 B CN 103963024B CN 201310036857 A CN201310036857 A CN 201310036857A CN 103963024 B CN103963024 B CN 103963024B
- Authority
- CN
- China
- Prior art keywords
- locking member
- output shaft
- retainer
- power tool
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
- B23D45/16—Hand-held sawing devices with circular saw blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/29—Details; Component parts; Accessories
- B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
- B27B5/32—Devices for securing circular saw blades to the saw spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B9/00—Portable power-driven circular saws for manual operation
- B27B9/02—Arrangements for adjusting the cutting depth or the amount of tilting
Abstract
The invention provides a kind of power tool, comprise: for install and drive the output shaft of working head work, for working head is fixed on securing member on output shaft, movement between locked position and off-position locking member, be used for impelling locking member all the time towards the retainer that the flexible member of locked position and can selecting coordinates with locking member, wherein locking member is used for locking and release working head.Setting like this, make operator only need press securing member, thus securing member promotes retainer, retainer is impelled to throw off and the coordinating of locking member, and locking member moves to locked position under the effect of flexible member, the bar portion of securing member is locked on output shaft, thus easily working head is arranged on output shaft.Off-position, retainer coordinates with locking member, can be removed from output shaft by securing member easily, thus improves the convenience of operation.
Description
Technical field
The present invention relates to a kind of power tool.
Background technology
Working head in power tool, as saw blade is driven by the rotary output axis be connected with the motor of power tool usually.In many cases, saw blade has one through the hole of the accommodation output shaft at center.The one end of output shaft being installed saw blade is provided with internal thread.During installation, saw blade is placed on output shaft, fastening bolt is extended in the screw thread of output shaft through the hole on saw blade, then by spanner, fastening bolt is tightened, thus saw blade is fixed on output shaft; Same, by spanner screwed tightening fixing bolt, and tightening member is taken off can take off saw blade from output shaft.The visible traditional structure be arranged on by working head on output shaft, operates very loaded down with trivial details and wastes time and energy.
Therefore, the power tool that a kind of improvement is provided is necessary, to solve the problem in fact.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of power tool, conveniently can install and remove working head.
In order to solve the problem, the invention provides a kind of power tool, described power tool comprises: output shaft, for installing and driving working head work, comprises accepting hole extending longitudinally; Securing member, for working head is fixed on described output shaft, comprises the bar portion extended in described accepting hole; Locking member, moves between locked position and off-position, for locking and discharging described securing member; Flexible member, for impelling described locking member all the time towards described locked position; Retainer, can select to coordinate with described locking member; In off-position, described retainer coordinates with described locking member, can remove described securing member from described output shaft; In off-position in locked position process, described securing member promotes described retainer, and impel described retainer to throw off and the coordinating of described locking member, described locking member moves to locked position under the effect of described flexible member; At locked position, described securing member is locked on described output shaft by described locking member.
Disclosed power tool, by operator presses securing member, make securing member promote retainer to move, retainer is impelled to throw off and the coordinating of locking member, and locking member disengagement moves to locked position after coordinating with retainer under the effect of flexible member, being locked at securing member on output shaft, thus easily working head is arranged on output shaft; Coordinated with locking member by retainer, locking member is remained on off-position, in this position, easily securing member can be removed from output shaft, improve the convenience of operation.
Preferably, described retainer axially selectively coordinating with described locking member along described output shaft.
Preferably, described retainer and described locking member one of them be provided with mating groove, another in described retainer and described locking member is provided with auxiliary section, and described mating groove matches with described auxiliary section.
Preferably, described retainer is provided with the groove matched with described securing member, and described groove is semicircle or arc.
Preferably, described bar portion comprises the bearing surface of the axis perpendicular to described output shaft, described locking member comprises the through hole that can pass for described bearing surface and the locking face coordinated with described bearing surface, described locking face is provided with the impenetrable spacing hole of described bearing surface, and wherein said through hole is communicated with described spacing hole.
Preferably, described output shaft is connected with mount pad, at described mount pad and described locking member, one of them is provided with the guide channel tilted relative to the axis of described output shaft, another in described mount pad and described locking member is provided with guidance part, and described guide channel matches with described guidance part.
Preferably, described mount pad comprises first, second Split seat, and described guide channel is formed by first, second Split seat described.
Preferably, described power tool also comprises the actuator impelling described locking member movement, and described actuator comprises first field of conjugate action engaged with described locking member, when actuator is movable, drives described locking member to move by described first field of conjugate action.
Preferably, described locking member is provided with second field of conjugate action matched with described first field of conjugate action, and described second field of conjugate action is obliquely installed relative to the axis of described output shaft.
Preferably, between described retainer and described actuator, spring is provided with.
Preferably, described actuator being axially movably arranged on described output shaft along described output shaft.
Preferably, described bar portion is provided with the tapering point coordinated with described retainer.
Preferably, described accepting hole is provided with screwed hole in the one end near described saw blade.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, further detailed description is done to the present invention.
Fig. 1 is the stereogram of power tool of the present invention.
Fig. 2 removes the partial perspective view of housing for the power tool shown in Fig. 1.
Fig. 3 is the three-dimensional exploded view of the fast fixture of power tool of the present invention.
Fig. 4 is the three-dimensional exploded view of another angle of the fast fixture of power tool of the present invention.
Fig. 5 is the partial perspective view of the fast fixture of power tool of the present invention, now, and the non-grip fastener of locking member.
Fig. 6 is the partial perspective view of the fast fixture of power tool of the present invention, now, and locking member grip fastener.
Fig. 7 is the sectional view of the fast fixture of power tool of the present invention, and now actuator is in initial position.
Fig. 8 is the sectional view of the fast fixture of power tool of the present invention, and now locking member is in off-position.
Fig. 9 is the sectional view of the fast fixture of power tool of the present invention, and now locking member is in locked position.
Figure 10 is the stereogram of another angle of power tool of the present invention.
In figure:
30. little electric circular saw 32. housing 34. motors
36. transmission component 38. saw blade 40. output shafts
Anterior 44. housing rear portion 46. housing central section of 42. housings
48. power line 49. switch 50. securing members
52. installation portion 54. accepting hole 56. centre bores
58. boss 60. connectors 62. are protruding
64. pressing plate 65. convex button 66. bar portions
68. stiff end 70. free end 72. steps
74. bearing surface 76. locking member 78. flexible members
80. retainer 81. mount pad 82. first Split seats
84. second Split seat 86. installation sleeve 88. first guiding faces
90. second guiding face 92. stopper slot 94. main bodys
96. through hole 98. spacing hole 100. locking faces
102. limiting section 104. protuberance 106. confined planes
108. adjacent surface 110. guidance part 112. auxiliary sections
114. mating groove 116. body 118. support portions
120. groove 122.U type groove 124. springs
126. actuator 128. operating portion 130. engaging pieces
132. guide part 134. guide groove 136. first fields of conjugate action
138. second field of conjugate action 139. screwed hole 140. protective covers
142. hole
Detailed description of the invention
The present invention relates to a kind of power tool, particularly relate to and working head is arranged on structure on power tool and method.Wherein power tool can be electric circular saw, little electric circular saw, oscillating machine, angle mill, diagonal cutting saw etc.; And working head can be a kind of straight blade, also can be as other annexes such as saw blade, emery disc, scrapers.
In the present embodiment, little electric circular saw is enumerated so that creating conception of the present invention to be described.
Refer to Fig. 1 and Fig. 2, a kind of little electric circular saw 30, comprise housing 32, the motor 34 be housed in housing 32, to be connected transmission component 36 for transmitting power with motor 34, driven by transmission component 36 and for saw blade 38 is installed output shaft 40(as shown in Figure 3).In describing the invention, unless otherwise noted, direction term, as front, back, left, right, up and inferior, be all relative to the normal direction using this little electric circular saw, if the direction of advance defining little electric circular saw is front, the direction contrary with the direction of advance of little electric circular saw is rear etc.
This housing 32 comprises housing front portion 42, housing rear portion 44 and is connected the housing central section 46 at housing anterior 42 and housing rear portion 44.Here housing central section 46 is handle grip portion, and certainly, handle grip portion also can be arranged on other position of housing 32 or arrange separately.
Motor is motor 34 in the present embodiment, and motor 34 passes through transmission component 36 by power transmission to output shaft 40, thus drives saw blade 38 to carry out cutting work.As well known to the skilled person, motor also can be air motor, hydraulic motor etc.Motor 34 is contained in housing rear portion 44, and motor 34 and power line 48 are electrically connected thus can be connected in AC power (not shown), and certain motor 34 also can be powered by dc-battery.Little electric circular saw 30 also comprises switch 49, and switch 49 and motor 34 are electrically connected the unlatching and stopping that being used for controlling motor 34.
As shown in Figure 3, output shaft 40 extends longitudinally, and has axis X.By securing member 50, saw blade 38 is installed in one end of output shaft 40.Output shaft 40 comprises the installation portion 52 and accepting hole 54 extending longitudinally that connect with saw blade 38.
Saw blade 38 offers centre bore 56, output shaft 40 is provided with the boss 58 coordinated with this centre bore 56.In the present embodiment, the size of centre bore 56 is greater than the size of boss 58.Therefore, little electric circular saw 30 is also provided with connector 60.Connector 60 is provided with four columniform protruding 62, for coordinating with four arc chord angles of centre bore 56.During installation, four columniform protruding 62 of connector 60 are passed installation portion 52 and coordinate with four arc chord angles 6 of centre bore 5, thus deliver power better while being firmly arranged on output shaft 40 by saw blade 38.Certainly, those skilled in the art are readily appreciated that, boss 58 can with centre bore 56 shape, size or both all mate or all do not mate.And the cross section of centre bore 56 can be a variety of shape, as circular, oval, triangle or abnormity etc.Equally, the cross section of boss 58 also can have a variety of shape, as ellipse, triangle, polygon etc.
Securing member 50 is for being arranged on output shaft 40 by saw blade 38, and saw blade 38 through the centre bore 56 of saw blade 38, and then is connected on the installation portion 52 of output shaft 40 by securing member 50.
In order to Fast Installation or dismounting saw blade 38, this little electric circular saw 30 be provided with can Fast Installation or dismounting securing member 50 fast fixture.
In the present embodiment, securing member 50 comprises the pressing plate 64 connected with saw blade 38 and the bar portion 66 extended in accepting hole 54.The bottom surface of pressing plate 64 roughly can be set to taper.The bottom surface of pressing plate is provided with convex button 65, and convenient operation person presses.Bar portion 66 is roughly cylindrical.Certainly, bar portion 66 cross section can be a variety of shape, as rectangle, ellipse etc.
Bar portion 66 comprises the stiff end 68 be connected with pressing plate 64 and the free end 70 be oppositely arranged.The end of free end 70 is tapering point.
Bar portion 66 is provided with step 72 in the position near free end 70, and this step 72 is formed with the bearing surface 74 of the axis X being approximately perpendicular to output shaft 40.In the present embodiment, the outline of bearing surface 74 is circular, and certain those skilled in the art are readily appreciated that, the outline of bearing surface 74 can be other a variety of shape, as connected shape, ellipse, triangle etc. more.And the concrete effect of tapering point 70 and bearing surface 74 can be described in detail later.
Consult Fig. 3, fast fixture comprise can between locked position and off-position mobile locking member 76, for impelling locking member 76 all the time towards the retainer 80 that the flexible member 78 of locked position and can selecting coordinates with locking member 76.
Output shaft 40 is connected with mount pad 81.In the present embodiment, mount pad 81 comprises first, second Split seat 82 and 84, and wherein the second Split seat 84 is fixedly connected with output shaft 40.In the present embodiment, the second Split seat 84 is provided with screwed hole, and output shaft 40 is provided with external screw thread at the other end away from installation portion 52, and so, output shaft 40 is linked together by threaded engagement and the second Split seat 84.Certainly, also by other mounting means well-known to those skilled in the art such as screw, rivet, welding, output shaft 40 and the second Split seat 84 can be fixed together
The outside of mount pad 81 is arranged with tool female installation sleeve 86, second Split seat 84 and is provided with external screw thread (not shown).The internal thread of installation sleeve 86 coordinates with the external screw thread of the second Split seat 84, thus is fixed together by first, second Split seat 82 and 84.Certainly, also external screw thread can be arranged on the first Split seat 82.Be appreciated that mount pad 81 also can be a single entirety; Or form a single entirety with output shaft 40; Or be fixed together by other mounting means well-known to those skilled in the art such as bolt, screw, rivet and output shaft 40.
The guide channel (non-label) coordinated with locking member 76 is provided with in mount pad 81.Locking member 76 moves in guide channel, realizes changing between locked position and off-position.
First Split seat 82 is provided with the first guiding face 88 coordinated with locking member 76.Here, the first guiding face 88 is obliquely installed relative to the axis X of output shaft 40.
As shown in Figure 4, the second Split seat 84 is provided with the second guiding face 90 coordinated with locking member 76, and equally, the second guiding face 90 is obliquely installed relative to the axis X of output shaft.
And when first, second Split seat 82 and 84 is fixed together, between the first guiding face 88 and the second guiding face 90, form the guide channel coordinated with locking member 76.Thus, guide channel is obliquely installed relative to the axis X of output shaft.
The stopper slot 92 of collecting retainer 80 is provided with in mount pad 81.Preferably, the bearing of trend of stopper slot 92 and the axis X of output shaft be arranged in parallel.Certainly, those skilled in the art are readily appreciated that, the bearing of trend of stopper slot 92 also can be obliquely installed relative to the axis X of output shaft 40.
Locking member 76 is processed by rigid, and it is installed in mount pad 81, and is positioned at the space of first, second Split seat 82 and 84 formation.Locking member 76 comprises the main body 94 roughly becoming U-shaped, and this main body 94 is provided with the through hole 96 and the impenetrable spacing hole 98 of bearing surface 74 that can pass for bearing surface 74.Wherein through hole 96 and spacing hole 98 lay respectively at the two ends of main body 94 and are interconnected.Through hole 96 can match with the outline of bearing surface 74, also can not match with the outline of bearing surface 74, only need slightly larger than the outline of bearing surface 74.And in the present embodiment, through hole 96 is roughly square.The spacing hole 98 be connected with through hole 96 is rectangle, and its width is slightly less than the length of side of through hole 96.
The surface of main body 94 is formed the locking face 100 leant with bearing surface 74.Through hole 96 is opened on this locking face 100.
Consult Fig. 5, when locking member 76 is positioned at off-position, through hole 96 is not shown with the accepting hole 54(on output shaft 40) align, can for the bearing surface 74 on securing member 50 simultaneously through through hole 96 and accepting hole 54; Consult Fig. 6, when locking member 76 is positioned at locked position, because locking member 76 radially outward movement impels through hole 96 to stagger with the accepting hole 54 on output shaft 40, and spacing hole 98 aligns at least partly with accepting hole 54, because spacing hole 98 is narrower, can not pass by the bearing surface 74 on fastener 50, and under the effect of flexible member 78, the locking face 100 on locking member 76 coordinates with bearing surface 74, thus securing member 50 is locked on output shaft 40 by locking member 76.Bar portion 66 comprises the limiting section 102 be connected with step 72, and this limiting section 102 can pass spacing hole 98.
The end that autonomous agent 94 arranges one end of through hole 96 extends radially outwardly two symmetrical protuberances 104.Protuberance 104 comprises the vertically disposed confined planes 106 with bearing surface 74.Confined planes 106 forms the space of accommodating flexible member 78 with the adjacent surface 108 on mount pad 81.That is, one end of flexible member 78 is resisted against on confined planes 106, and the other end is resisted against on adjacent surface 108.
Again see Fig. 4, locking member 76 is provided with the guidance part 110 suitable with guide channel.Certainly, guide channel also can be arranged on locking member 76, and guidance part 110 is arranged on mount pad 81.
Guidance part 110 is arranged on the both sides of through hole 98, and the bearing of trend of guidance part 100 is obliquely installed relative to locking face 100.Thus, when locking member 76 moves, fit with first, second guiding face 88 and 90 respectively in the upper and lower surface of guidance part 100, makes guidance part 100 can along relative to the axis X inclination movement of output shaft in guide channel.Certainly, understood by one of ordinary skill in the art, here, the moving direction of locking member 76 also can perpendicular to the axis X of output shaft 40.
Retainer 80 is processed by rigid, and it is movably housed in stopper slot 92, thus retainer 80 is arranged on output shaft 40 movably, and can moving axially along output shaft 40.Certainly, as understood by those skilled in the art, the moving direction of retainer 80 can tilt relative to the axis X of output shaft 40 or vertically arrange.
Retainer 80 selectively coordinates with locking member 76.Retainer 80 and locking member 76 one of them be provided with mating groove, another in retainer 80 and locking member 76 is provided with the auxiliary section of matching auxiliary section.
In the present embodiment, auxiliary section 112 is arranged on retainer 80, and mating groove 114 is arranged on locking member 76.Mating groove 114 extends along the axis of output shaft 40.
Retainer 80 comprises body 116, is extended with two auxiliary sections 112 and two support portions 118 respectively from the upper and lower surface of body 116.Body 116 is roughly sheet, is provided with the groove 120 matched with securing member 50, and wherein this groove 120 can be the shape such as semicircle or arc.During installation, the groove 120 of semicircle or arc is towards the through hole 96 on locking member 76.So, when tapering point 70 matches with groove 120, securing member 50 is made to promote the more stable of retainer 80 movement.
Two auxiliary sections 112 are extended downwards vertically from the lower surface of body 116, and Central Symmetry is arranged.When auxiliary section 112 is contained in mating groove 114, retainer 80 stops locking member 76 to move, and locking member 76 is positioned at off-position; Throw off when auxiliary section 112 and coordinate with mating groove 114, retainer 80 cannot stop locking member 76 to move, and locking member 76 moves to locked position under the effect of flexible member 78.Here, flexible member 78 can be stage clip, torsion spring etc.
Two support portions 118 form from axial upwards extension of the upper surface of body 116, and same Central Symmetry is arranged.Support portion 118 has been provided with U-type groove 122, for partial receipt spring 124.This spring 124 coordinates with locking member 76 for impelling retainer 80.
In sum, in off-position, retainer 80 coordinates with locking member 76, can from removal of fastener 50 output shaft 40, thus can quick-detachment saw blade 38; In off-position in locked position process, securing member 50 promotes retainer 80, and impel retainer 80 to throw off and the coordinating of locking member 76, locking member 76 moves to locked position under the effect of flexible member 78; At locked position, bar portion 66 is clamped on output shaft 40, and saw blade 38 is clamped between installation portion 52 and pressing plate 64, and then can Fast Installation saw blade 38.Thus when without the need to external auxiliary instrument, saw blade 38 can be changed rapidly.
Consult Fig. 3 again, in order to convenient, locking member 76 is converted to off-position from locked position, little electric circular saw also comprises the actuator 126 impelling locking member 76 movement.By operation actuator 126, locking member 76 can be moved to off-position by locked position, and then securing member 50 can be shifted out in output shaft 40.
Actuator 126 is movable to be arranged on mount pad 81, and the direction that locking member 76 can be driven to tilt along the axis X relative to output shaft 40 is moved.
Actuator 126 comprise can for the operating portion 128 of operator's operation, be connected to engaging piece 130 on operating portion 128 and guide part 132.Wherein guide part 132 matches with the guide groove 134 on mount pad 81, and actuator 126 is moved between activation point and initial position, and wherein the bearing of trend of guide groove 134 parallels with the axis of output shaft 40.So, actuator 126 moving axially operationally along output shaft 40.Certainly, the direction that actuator 126 also can tilt along the axis X relative to output shaft 40 is moved or is arranged on mount pad 81 by modes such as rotations.
Engaging piece 130 comprises first field of conjugate action 136 be obliquely installed vertically.When actuator 126 is movable, locking member 76 is driven to move by first field of conjugate action 136.
Locking member 76 is provided with the second field of conjugate action 138(of matching with first field of conjugate action 136 as shown in Figure 4), second field of conjugate action 138 is obliquely installed relative to the axis X of output shaft 40.
Pressing drive division 126, makes first field of conjugate action 136 be meshed with second field of conjugate action 138, thus drives locking member 76 to move to off-position by locked position.
Consult Fig. 7, in the present embodiment, spring 124 is arranged between retainer 80 and actuator 126.Therefore, the spring force of spring 124 impels actuator 126 to be always positioned at initial position; Impel retainer 80 all the time towards the position of engaging with locking member 76 simultaneously.Certainly, little electric circular saw 30 also can arrange two springs, and these two springs impel actuator 126 to be positioned at initial position respectively and impel retainer 80 all the time towards the position of engaging with locking member 80.
Below in conjunction with Fig. 8 and Fig. 9, describe present embodiment saw blade 38 and lock and dispose procedure.Actuator 126 can drive locking member 76 to be converted to off-position from locked position, and when locked position, securing member 50 part 76 that is locked clamps, thus is stably fixed on output shaft 40 by saw blade 38; When off-position, locking member 50 loosening fasteners 50, makes securing member 50 can remove in output shaft 40, thus is taken off by saw blade 38.Therefore, this little electric circular saw when without the need to external auxiliary instrument, can change saw blade 38 rapidly.
As shown in Figure 8, now locking member 76 is in off-position.In this position, under the effect of spring 124, retainer 80 coordinates with locking member 76.Namely, under the effect of spring 124, the auxiliary section 112 on retainer 80 is fastened in the mating groove 114 on locking member 76.And now, the through hole 96 on locking member 76 roughly aligns with the accepting hole 54 on output shaft 40.Locking face 100 on locking member 76 departs from securing member 50 and engages.At this moment, locking member 76 is in release fasteners 50, and then securing member 50 can be removed in locking member 76, thus saw blade 38 can be taken off.
It may be noted that above-mentioned off-position impels locking member 76 to move to off-position by the movement of external force operation actuator 126.When off-position, although cancelled external force, due to the effect of spring 124, actuator 126 returns back to initial position; Auxiliary section 112 card on retainer 80 is set in the mating groove 114 on locking member 76, thus makes locking member 76 remain on off-position.
Before securing member 50 is installed into output shaft 40, first saw blade 38 is arranged between the installation portion 52 of output shaft 40 and pressing plate 64.Can first saw blade 38 be arranged on the installation portion 52 of output shaft 40, then by the centre bore 56 of securing member 50 through saw blade 38, then stretch in the accepting hole 54 of output shaft 40; Also by the centre bore 56 of securing member 50 through saw blade 38, then can stretch in the accepting hole 54 of output shaft 40.
When needs are locked, user sees Fig. 3 by the convex button 65(on pressing securing member 50), the free end 70 of securing member 50 coordinates with the groove 120 of retainer 80, the axis of elasticity impelling retainer 80 to overcome spring 124 upwards moves certain distance, until auxiliary section 112 on retainer 80 departs from and the coordinating of the mating groove 114 on locking member 76.In the moving process of retainer 80, retainer 80 moves axially along output shaft 40.
As shown in Figure 9, and when the auxiliary section 112 on retainer 80 departs from and the coordinating of the mating groove 114 on locking member 76, locking member 76 is mobile also supporting rod portion 66 under the effect of flexible member 78.
It may be noted that in locking process, locking member 76 under the effect of flexible member 78 relative to the axis X inclination movement of output shaft 40; Under the effect of flexible member 78, the movement of locking member 76 impels through hole 96 to stagger with the accepting hole 54 on output shaft 40, and then makes the limiting section 102 on securing member 50 be arranged in spacing hole 98.Under flexible member 78 further effect, the locking face 100 on locking member 76 engages with the bearing surface 74 of securing member 50, and securing member 50 part 76 that is locked clamps, thus is fixed between installation portion 52 and pressing plate 64 by saw blade 38.
It may be noted that at above-mentioned locked position, locking face 100 is roughly vertical with the axis X of output shaft 40 to be arranged.
It may be noted that at above-mentioned locked position, retainer 80 Compress Spring 124.Retainer 80, under the effect of the ledge surface opposing with bearing surface 74, is maintained at position of engaging non-with locking member 76.
It may be noted that in the present embodiment, the moving direction of locking member 76 and the axis X bearing of trend relative tilt of output shaft 40 are arranged, not vertical setting.This is because little electric circular saw 30 can install the saw blade of different brands, different model, and like this thickness of saw blade is bound to disunity.Therefore, be obliquely installed, the axial gap brought due to the thickness disunity of saw blade can be eliminated.Thus, it will be appreciated by those skilled in the art that, also can coordinate with the bearing surface of securing member the axial gap eliminated and bring due to the thickness disunity of saw blade by arranging inclined plane.Certainly, arrange if the moving direction of locking member 76 is vertical with the bearing of trend of the axis X of output shaft 40, this locking member 76 also can fix certain thickness saw blade.
Above, describe the clamping process of the little electric circular saw 30 of present embodiment in detail, its dispose procedure is then contrary with clamping process.When saw blade 38 is dismantled from output shaft 40 by needs, only manually need press the drive division 128 of actuator 126, Compress Spring 124, makes actuator 126 along being parallel to moving axially of output shaft 40.Actuator 126 is in moving process, and its first field of conjugate action 136 engages with second field of conjugate action 138 on locking member 76, and then drives locking member 76 to move.Locking member 76 is when moving for mount pad 81, and locking face 100 disengagement is engaged with bearing surface 74, and through hole 96 moves to the position of roughly aliging with accepting hole 54, thus release fasteners 50.Retainer 80, under the elastic force effect of spring 124, axially moves down, because the groove 120 of retainer 80 coordinates with free end 70, therefore, can drive securing member 50, securing member 50 releases certain distance in output shaft the most at last, thus securing member 50 can be taken out easily in output shaft; Meanwhile, retainer 80 axially moves down, until auxiliary section 112 coordinates with mating groove 114, and then retainer 80 stops locking member 76 to move, and locking member 76 is positioned at off-position.
It may be noted that as shown in Figure 9 herein, in the present embodiment, accepting hole 54 is provided with screwed hole 139 in the one end near saw blade 38.If it is screwed fastening bolt or screw that securing member changes into.When installing saw blade 38, only need by securing member through the centre bore 56 on saw blade 38 and with screwed hole 139 threaded engagement, also saw blade 38 can be fixed on output shaft 40.
Refer to Figure 10, housing front portion 42 is provided with protective cover 140.Protective cover 140 comprises the hole 142 being roughly circle.This hole 142 can be closed or semiclosed, for holding actuator 126.Thus avoid end user's maloperation actuator 126; Or actuate actuator 126 owing to being placed on the table by little electric circular saw 30.
The present invention is not limited to aforementioned embodiments, those skilled in the art also may make under the enlightenment of the technology of the present invention marrow other change, as long as but its realize function and the present invention same or similar, all should be covered by scope.
Claims (13)
1. a power tool, is characterized in that: described power tool comprises:
Output shaft, for installing and driving working head work, comprises accepting hole extending longitudinally;
Securing member, for working head is fixed on described output shaft, comprises the bar portion extended in described accepting hole;
Locking member, moves between locked position and off-position, for locking and discharging described securing member;
Flexible member, for impelling described locking member all the time towards described locked position;
Retainer, can select to coordinate with described locking member;
In off-position, described retainer coordinates with described locking member, can remove described securing member from described output shaft; In off-position in locked position process, described securing member promotes described retainer, and impel described retainer to throw off and the coordinating of described locking member, described locking member moves to locked position under the effect of described flexible member; At locked position, described securing member is locked on described output shaft by described locking member.
2. power tool according to claim 1, is characterized in that: described retainer axially selectively coordinating with described locking member along described output shaft.
3. power tool according to claim 1 and 2, it is characterized in that: described retainer and described locking member one of them be provided with mating groove, another in described retainer and described locking member is provided with auxiliary section, and described mating groove matches with described auxiliary section.
4. power tool according to claim 1 and 2, is characterized in that: described retainer is provided with the groove matched with described securing member, and described groove is semicircle or arc.
5. power tool according to claim 1, it is characterized in that: described bar portion comprises the bearing surface of the axis perpendicular to described output shaft, described locking member comprises the through hole that can pass for described bearing surface and the locking face coordinated with described bearing surface, described locking face is provided with the impenetrable spacing hole of described bearing surface, and wherein said through hole is communicated with described spacing hole.
6. power tool according to claim 5, it is characterized in that: described output shaft is connected with mount pad, at described mount pad and described locking member, one of them is provided with the guide channel tilted relative to the axis of described output shaft, another in described mount pad and described locking member is provided with guidance part, and described guide channel matches with described guidance part.
7. power tool according to claim 6, is characterized in that: described mount pad comprises first, second Split seat, and described guide channel is formed by first, second Split seat described.
8. power tool according to claim 1, it is characterized in that: described power tool also comprises the actuator impelling described locking member movement, described actuator comprises first field of conjugate action engaged with described locking member, when actuator is movable, described locking member is driven to move by described first field of conjugate action.
9. power tool according to claim 8, is characterized in that: described locking member is provided with second field of conjugate action matched with described first field of conjugate action, and described second field of conjugate action is obliquely installed relative to the axis of described output shaft.
10. power tool according to claim 8, is characterized in that: between described retainer and described actuator, be provided with spring.
11. power tools according to claim 8, is characterized in that: described actuator being axially movably arranged on described output shaft along described output shaft.
12. power tools according to claim 1, is characterized in that: described bar portion is provided with the tapering point coordinated with described retainer.
13. power tools according to claim 1, is characterized in that: described working head is saw blade, and described accepting hole is provided with screwed hole in the one end near described saw blade.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310036857.4A CN103963024B (en) | 2013-01-30 | 2013-01-30 | Power tool |
| PCT/CN2014/071326 WO2014117681A1 (en) | 2013-01-30 | 2014-01-24 | Power tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310036857.4A CN103963024B (en) | 2013-01-30 | 2013-01-30 | Power tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103963024A CN103963024A (en) | 2014-08-06 |
| CN103963024B true CN103963024B (en) | 2016-04-06 |
Family
ID=51233270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310036857.4A Active CN103963024B (en) | 2013-01-30 | 2013-01-30 | Power tool |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103963024B (en) |
| WO (1) | WO2014117681A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465492B (en) * | 2017-09-08 | 2021-05-14 | 苏州宝时得电动工具有限公司 | Electric saw |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005063439A1 (en) * | 2003-12-30 | 2005-07-14 | Robert Bosch Gmbh | Hand machine tool with clamping device |
| DE102006001986A1 (en) * | 2006-01-16 | 2007-07-19 | Robert Bosch Gmbh | Clamping device for releasably securing a disc-shaped tool |
| CN101347936A (en) * | 2007-07-19 | 2009-01-21 | C.&E.泛音有限公司 | Power-driven hand tool |
| CN201669688U (en) * | 2010-04-27 | 2010-12-15 | 南京德朔实业有限公司 | Handheld power tool with fast working component clamping device |
| CN201736204U (en) * | 2010-07-12 | 2011-02-09 | 苏州宝时得电动工具有限公司 | Power tool |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20008945U1 (en) * | 2000-05-22 | 2001-10-04 | Holzma Plattenaufteiltechnik | Bearing device for a rotating, rotationally symmetrical tool |
| DE10124971B4 (en) * | 2001-05-21 | 2013-06-20 | Hilti Aktiengesellschaft | Quick clamping device for a circular saw |
| JP3936602B2 (en) * | 2002-02-27 | 2007-06-27 | リョービ株式会社 | Rotating shaft fixing device for electric tools |
| CN201493829U (en) * | 2009-08-03 | 2010-06-02 | 南京德朔实业有限公司 | Quick clamping device for laminated working element |
-
2013
- 2013-01-30 CN CN201310036857.4A patent/CN103963024B/en active Active
-
2014
- 2014-01-24 WO PCT/CN2014/071326 patent/WO2014117681A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005063439A1 (en) * | 2003-12-30 | 2005-07-14 | Robert Bosch Gmbh | Hand machine tool with clamping device |
| DE102006001986A1 (en) * | 2006-01-16 | 2007-07-19 | Robert Bosch Gmbh | Clamping device for releasably securing a disc-shaped tool |
| CN101347936A (en) * | 2007-07-19 | 2009-01-21 | C.&E.泛音有限公司 | Power-driven hand tool |
| CN201669688U (en) * | 2010-04-27 | 2010-12-15 | 南京德朔实业有限公司 | Handheld power tool with fast working component clamping device |
| CN201736204U (en) * | 2010-07-12 | 2011-02-09 | 苏州宝时得电动工具有限公司 | Power tool |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014117681A1 (en) | 2014-08-07 |
| CN103963024A (en) | 2014-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2276587A (en) | Power operated sword-type saw | |
| US7191847B2 (en) | Drive for a motor-driven hand-held tool | |
| US10040215B2 (en) | Blade and blade attachment system for an oscillating tool | |
| CN107175630B (en) | Tool-less blade separation device for power tools | |
| US10792780B2 (en) | Sander | |
| WO2006010676A2 (en) | Battery pack and electric hand machine tool | |
| EP3383163B1 (en) | Blade arrangement for hand-held power tool | |
| CN107112463B (en) | Power supply mould group, battery component and the holder of holder | |
| KR20160048804A (en) | Grinding machine housing device | |
| CN1518422A (en) | Nail clippers | |
| CN103963024B (en) | Power tool | |
| RU2639191C2 (en) | Device for securing blank in treatment machine | |
| CN210232554U (en) | High-efficient hand mill | |
| CN103962818A (en) | Operation method for mounting and dismounting working head on and from power tool | |
| CN103962817A (en) | Operation method for dismounting working head from power tool | |
| CN210256010U (en) | Accessory for power hammer and power hammer assembly | |
| CN202241200U (en) | Handheld power tool | |
| US20140053418A1 (en) | Machine Tool System | |
| CN207495418U (en) | Work head fixed mechanism and electric tool | |
| TW202022200A (en) | Fastening tool | |
| CN211867568U (en) | F-shaped clamp | |
| JP2000512561A (en) | Electric hand-held sawing machine | |
| CN103170955A (en) | Accessory clamping mechanism and power tool with same | |
| CN203418171U (en) | Saw web clamping device and reciprocating saw thereof | |
| CN108356768B (en) | Automatic pressing device for oscillating power tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170426 Address after: 215123 Jiangsu Province, Suzhou City Industrial Park East Road, No. 18 Patentee after: Technology (China) Co., Ltd. Address before: 215123 Jiangsu Province, Suzhou City Industrial Park East Road, No. 18 Patentee before: Baoshide Electric Tools Co., Ltd., Suzhou |
|
| TR01 | Transfer of patent right |