CN103182708B - Power tool - Google Patents

Power tool Download PDF

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Publication number
CN103182708B
CN103182708B CN201110447995.2A CN201110447995A CN103182708B CN 103182708 B CN103182708 B CN 103182708B CN 201110447995 A CN201110447995 A CN 201110447995A CN 103182708 B CN103182708 B CN 103182708B
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CN
China
Prior art keywords
cooperation position
fixture
output shaft
driving link
driving mechanism
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CN201110447995.2A
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Chinese (zh)
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CN103182708A (en
Inventor
张士松
庞晓丽
徐静涛
吴宇
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Positec Power Tools Suzhou Co Ltd
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Positec Power Tools Suzhou Co Ltd
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Application filed by Positec Power Tools Suzhou Co Ltd filed Critical Positec Power Tools Suzhou Co Ltd
Priority to CN201110447995.2A priority Critical patent/CN103182708B/en
Priority to PCT/CN2012/001747 priority patent/WO2013097297A1/en
Priority to EP12861565.5A priority patent/EP2799188A4/en
Priority to US14/369,676 priority patent/US9821430B2/en
Publication of CN103182708A publication Critical patent/CN103182708A/en
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Publication of CN103182708B publication Critical patent/CN103182708B/en
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Abstract

The invention discloses a power tool with a quick locking mechanism. The power tool comprises a casing, an output shaft, a fixing piece and a driving mechanism, wherein the output shaft is used for mounting a working head and driving the working head to operate, and the output shaft is provided with a bearing part extending out of the casing; the fixing piece comprises a holding part used for fixing the working head on the bearing part of the output shaft; and the driving mechanism can be switched between a first matching position and a second matching position. In the first matching position, the holding part of the fixing piece is enabled to press the working head tightly; and in the second matching position, the holding part of the fixing piece is enabled to release the working head. The driving mechanism is provided with a first elastic piece, when the fixing piece is pressed to move axially, the driving mechanism can be automatically restored to the first matching position from the second matching position under the effect of the first elastic piece. When the working head of the power tool is replaced, the operation is simple and convenient.

Description

Power tool
Technical field
The present invention relates to a kind of power tool, especially a kind of power tool of hand-held.
Background technology
Multi Role Aircraft is the common hand-held swing-type power tool of industry, and to be output shaft do oscillating motion around self axial line for its operation principle.Therefore, after user is provided with different working heads on the free end of output shaft, after straight blade, saw blade, triangle frosted dish, spade-type scraper, multiple different operating function can be realized, as sawed, cutting, grind, scrape, to adapt to different work requirements.
China's No. CN100574993Cth, issued patents, discloses a kind of swing-type power tool with quick clamping mechanism.This swing-type power tool comprises: for the work arbor of driven tool, and described instrument can be fastened between the retaining part in the tool end of tightening member and described work arbor; For the mobile device making described tightening member slide between off-position and clamped position.
In this off-position, described tightening member can be removed from described work arbor; And in this clamped position, described tightening member leans on described retaining part by spring element folder.Wherein, described tightening member comprises clamp shaft, and this clamp shaft can be inserted in described work arbor, and remains in described clamped position by the retaining mechanism in described work arbor, and can be removed when being in described off-position.Described retaining mechanism has the clamping component that can radially move.
Described retaining mechanism has the collar, clamping component can be held against this collar with moving radially, described clamping component is maintained in the recess of the described collar, described clamping component has inclined surface on its side towards described instrument, described inclined surface coordinates with the inclined surface on the described collar, thus make the described collar against the described inclined surface of described clamping component, thus drive clamping component radial motion and clamp the clamp shaft of tightening member, realize the Quick-clamped to tightening member or release.
But in above-mentioned swing-type power tool, moving assembly is the operation spanner that can rotate around the axis perpendicular to output shaft.When operation spanner turns to enable possition, rely on the cam surface extruding thrust component on spanner, and then axially move down after making retaining mechanism overcome spring force, realize the release to tightening member.During clamping tightening member, then need again spanner to be rotated back to closing position by enable possition, now retaining mechanism axially moves under the effect of spring force, and Quick-clamped tightening member.Owing to being to provide axial pressing force by the elastic force of spring, therefore, when external load is larger, axially downward external force has exceeded the axial thrust upwards that spring can provide, firm element can be made axially to move down together with after pressing spring under retaining mechanism certain, thus cause forming gap between tightening member and instrument, make loosening tool, and then occur skidding, affect operating efficiency.In addition, the quick clamping mechanism of this power tool, needs the spanner of a large-size, and all needs when discharging or clamp tightening member to pull spanner rotation, complex steps.
Therefore, the power tool that a kind of improvement is provided is necessary, to solve the problem in fact.
Summary of the invention
An object of the present invention is to provide a kind of power tool, and working head can be installed on output shaft by reliable mode by this power tool, and without the need to using the aids such as such as spanner, and operating procedure is simple, feel is better.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A kind of power tool, comprising:
Housing;
Output shaft, can rotate oscillating traverse motion around himself axis, for installing and driving working head work, described output shaft is provided with the carrier extending described housing;
Fixture, comprises the press keeping section for being fixed on by described working head on the carrier of described output shaft; And
Driving mechanism, can change between the first cooperation position and the second cooperation position, at described first cooperation position, makes the press keeping section of described fixture compress described working head; At described second cooperation position, the press keeping section of described fixture is made to discharge described working head;
Wherein, described driving mechanism is provided with the first elastic component, and press described fixture when moving axially, under the effect of described first elastic component, described driving mechanism automatically returns to described first cooperation position from described second cooperation position.
Preferably, described driving mechanism comprises driving link and the counterpart of relative motion, and mobile described driving link, can drive described fixture to move axially.
Preferably, one end of described elastic component is connected on described driving link, and the other end is connected with described housing or described output shaft.
Preferably, drive described counterpart to move axially when described driving link moves, described fixture is supported on described counterpart.
Preferably, the relatively described counterpart of described driving link moves axially, and described fixture is supported on described driving link.
Preferably, the relatively described counterpart rotational motion of described driving link, makes described driving mechanism rotate between described first cooperation position and described second cooperation position.
Preferably, described driving link around described output shaft axis or be parallel to described axis straight line rotate.
Preferably, described driving link rotates around the straight line of the axis perpendicular to described output shaft.
Preferably, described driving link rotates around the straight line of the axis perpendicular to described output shaft.
Preferably, described driving link is provided with the first engaging piece, described counterpart is provided with the second engaging piece coordinated with described first engaging piece, one of described first engaging piece and described second engaging piece are provided with first field of conjugate action for coordinating.
Preferably, described first field of conjugate action is cam surface.
Preferably, described first field of conjugate action is plane, and the axis of described first field of conjugate action and described output shaft acutangulates.
Preferably, the another one among described first engaging piece and the second engaging piece is provided with second field of conjugate action coordinated with described first field of conjugate action.
Preferably, when described driving mechanism is positioned at described second cooperation position, between described driving link and described counterpart, form self-locking.
Preferably, described driving mechanism moves to the process of described first cooperation position from described second cooperation position, and the distance of described driving link movement is greater than the distance of described fixture movement in the axial direction.
Preferably, described driving link is provided with the first limiting section, and described driven member is provided with the second limiting section, and when driving mechanism is positioned at the second cooperation position, described first limiting section coordinates with described second limiting section, limits the rotation of described driving link.
Preferably, when described driving mechanism is positioned at described second cooperation position, described fixture is by described driving mechanism rigid support, and the axial distance between the carrier of the relatively described output shaft of press keeping section of described fixture remains unchanged.
Preferably, described power tool also comprises operating mechanism, by operating described operating mechanism, described driving mechanism can be driven to move between the first cooperation position and the second cooperation position.
Preferably, be provided with the second elastic component between described driving mechanism and output shaft or housing, when described driving mechanism moves to the second cooperation position by the first cooperation position, described fixture is ejected from described output shaft by described second elastic component.
By arranging driving mechanism, when not adopting other aid, can compress or release working head by fast driving fixture, realizing Fast Installation or the dismounting of working head.By arranging the first elastic component, when axially pressing fixture, the first elastic component can make driving mechanism automatically return to the first cooperation position from the second cooperation position.Thus when the replacing of working head, decrease the operating procedure of driving mechanism, make operation simpler, there is better operating handle, working head can be changed more easily.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of first embodiment of the invention medium power instrument.
Fig. 2 is the schematic perspective view of subelement in power tool shown in Fig. 1.
Fig. 3 is the perspective exploded view of the subelement of power tool shown in Fig. 2.
The subelement that Fig. 4 is power tool shown in Fig. 2 is in the schematic perspective view of the first state, and now driving mechanism is positioned at the second cooperation position.
Fig. 5 is the sectional view of the subelement of power tool shown in Fig. 4.
The subelement that Fig. 6 is power tool shown in Fig. 2 is in the schematic perspective view of the second state, and now driving mechanism is between the second cooperation position and the first cooperation position, and working head is released.
Fig. 7 is the sectional view of the subelement of power tool shown in Fig. 6.
The subelement that Fig. 8 is power tool shown in Fig. 2 is in the schematic perspective view of the third state, and now driving mechanism is still between the second cooperation position and the first cooperation position, and working head is released.
Fig. 9 is the sectional view of the subelement of power tool shown in Fig. 8.
The subelement that Figure 10 is power tool shown in Fig. 2 is in the schematic perspective view of the 4th state, and now driving mechanism is in the first cooperation position, and working head is compacted.
Figure 11 is the sectional view of the subelement of power tool shown in Figure 10.
Figure 12 is the schematic perspective view of second embodiment of the invention medium power instrument.
Figure 13 is the schematic perspective view of the base portion of driving link in power tool shown in Figure 12.
The other direction schematic perspective view that Figure 14 is the base portion of driving link shown in Figure 13.
Figure 15 is the perspective exploded view of the subelement of power tool shown in Figure 12.
The subelement that Figure 16 is power tool shown in Figure 12 is in the schematic perspective view of the first state, and now driving mechanism is positioned at the second cooperation position, and working head is released.
Figure 17 is the sectional view of the subelement of power tool shown in Figure 16.
The subelement that Figure 18 is power tool shown in Figure 12 is in the schematic perspective view of the second state, and now driving mechanism is between the second cooperation position and the first cooperation position.
Figure 19 is the sectional view of the subelement of power tool shown in Figure 18.
The subelement that Figure 20 is power tool shown in Figure 12 is in the schematic perspective view of the third state, and now driving mechanism is positioned at the first cooperation position, and working head is compacted.
Figure 21 is the sectional view of the subelement of power tool shown in Figure 20.
Figure 22 is the schematic perspective view that the subelement of third embodiment of the invention medium power instrument is in the first state, and now driving mechanism is positioned at the second cooperation position, and working head is released.
The subelement that Figure 23 is power tool shown in Figure 22 is in the schematic perspective view of the second state, and now driving mechanism is positioned at the first cooperation position, and working head is compacted.
Figure 24 is the perspective exploded view of the subelement of power tool shown in Figure 22.
The subelement that Figure 25 is power tool shown in Figure 22 is in the schematic perspective view of the second state, and now driving mechanism is positioned at the second cooperation position, and working head is released.
The subelement that Figure 26 is power tool shown in Figure 22 is in the schematic perspective view of the second state, and now driving mechanism is positioned at the first cooperation position, and working head is compacted.
Related elements reference numeral in diagram is as follows:
100. Multi Role Aircraft 132. bar portion 155. first engaging pieces
10. casing 133. holding section 1551. first field of conjugate action
11. head capsules 134. the 3rd elastic component 156. first elastic component
111. horizontal part 14. working head 16. operating mechanisms
112. vertical portion 141. installation portion 161. actuators
113. pull-fork assembly 142. cutting part 1611. first cylinders
114. ball bearing 143. connecting portion 1612. second cylinders
115. sealed-bearing 144. centre bore 1613. first grooves
12. output shafts 145. fill hole 1614. second groove
121. axis body 146. breach 1615. driver slots
122. axle bed 15. driving mechanism 162. guides
123. epimere 151. driving link 1621. chutes
124. stage casing 152. counterpart 163. push rods
125. hypomere 1521. matrix 1631. location divisions
1251. roof 1632. guide rod portions of ear 1522.
1252. gathering sill 1523. ribs 1633. are sold
126. carrier 1524. recess 164. toggles
1261. diapire 1525. lower surface 165. second elastic components
1262. overcoat 1526. engaging piece 200. Multi Role Aircrafts
1263. projection 1527. second limiting section 21. housings
1264. groove 1528. second field of conjugate action 211. head capsules
127. inner sleeve 153. body 22. output shafts
128. accepting hole 1531. upper surface 221. axis bodies
13. switch 1532. first limiting section 2211. epimeres
131. press keeping section 154. protuberance 2212. hypomeres
222. axle bed 241. handle 93. driving mechanisms
2221. carrier 242. drive rod 930. first elastic components
23. driving mechanism 2421. second drive division 931. driving links
231. driving links 243. the 3rd elastic component 932. counterpart
2311. base portion 25. working head 934. axle portions
The flat quadrate part of 2312. sleeve 251. installation portion 9341.
2313. roof 252. breach 935. cam part
2314. first engaging piece 26. fixture 9351. low sides
2315. first field of conjugate action 261. press keeping sections 9352. are high-end
2316. recess 262. bar portion 9353. first fields of conjugate action
2317. first limiting section 263. holding section 936. sections of cooperation
2318. mesopore 900. Multi Role Aircraft 9361. engaging pieces
2319. first drive division 90. head capsule 9362. second fields of conjugate action
232. counterpart 91. output shaft 938. second elastic components
2321. matrix 911. axis body 94. working heads
2322. inner sleeve 912. axle sleeve 941. installation portions
2323. second engaging piece 913. axle bed 95. operating mechanisms
2324. second limiting section 9131. carrier 951. handles
2325. second field of conjugate action 914. through hole 952. arms
233. first elastic component 92. fixtures 953. are slotted
234. second elastic component 921. press keeping sections
24. operating mechanism 922. bar portions
Detailed description of the invention
Below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail.
Power tool of the present invention comprises housing, the output shaft be arranged in housing, the fixture be fixed on by working head on output shaft, and the driving mechanism that fixture is moved axially.Driving mechanism can be changed between the first cooperation position and the second cooperation position, at the first cooperation position, fixture by working head on output shaft; At the second cooperation position, fixture release working head, to disassemble working head from output shaft.Thus when without the need to external auxiliary instrument, can install rapidly or change working head.
The more important thing is, driving mechanism is also provided with the first elastic component, when axially pressing fixture, the first elastic component can make driving mechanism automatically return to the first cooperation position from the second cooperation position.Thus when the replacing of working head, decrease the operating procedure of driving mechanism, make operation simpler, there is better operating handle.
Detailed description of the invention one
Refer to Fig. 1 and Fig. 2, a kind of power tool, specifically a kind of Multi Role Aircraft 100, it output shaft 12 comprising the casing 10 extended in lengthwise, the head capsule 11 being connected to casing 10 front end (being defined as front end with left side in Fig. 1) and extend in head capsule 11.Wherein, in casing 10, be provided with motor (not shown), casing 10 be also provided with switch 13 to control unlatching or the shutoff of motor.Head capsule 11 comprises and to be connected with casing 10 and the horizontal part 111 arranged along horizontal direction in Fig. 1 and from the vertical portion 112 that the end of horizontal part 111 extends substantially vertical downward.Output shaft 12 is arranged at vertical direction, and its one end is arranged in head capsule 11, and the other end goes out to downward-extension in the vertical portion 112 of head capsule 11, and can do rotation oscillating traverse motion around the longitudinal axis X1 of self, and swaying direction is as shown in double-head arrow in Fig. 1.
In addition, in the inside of head capsule 11, be also provided with industry on oscillating machine the eccentric part (not shown) commonly used and pull-fork assembly 113, in order to the rotation output torque of motor to be converted into the swing output torque of output shaft 12.When eccentric part rotates, by with the coordinating of pull-fork assembly 113, the rotational motion of eccentric part is changed into the oscillating motion of output shaft 12 relative to axis X 1, and angle of oscillation is between about 0.5 to 7 degree, hunting frequency scope can be set to 5000 to 30000 times about per minute.At the free end of output shaft 12 by fixture 13 installment work 14, in present embodiment, working head 14 is a kind of straight blades, and this working head 14 can do oscillating motion along the double-head arrow direction in Fig. 1 under the drive of output shaft 12.
Compared with rotation power tool, when Multi Role Aircraft 100 works, output shaft 12 rotates oscillating traverse motion around himself axis X 1, thus produces larger sudden change moment of torsion along the both direction swung.Therefore, need very large axial chucking power to guarantee to remain on output shaft 12 by above-mentioned working head 14 under all conditions of work, can't occur skidding and affecting operating efficiency and maybe cannot work.
As shown in Figures 2 to 4, the axis X 1 place straight line of output shaft 12 is defined as longitudinal direction, and the direction vertical with axis X 1 is defined as transverse direction, and under the bottom of paper is, the top of paper is upper.Description hereinafter all adopts definition herein.Multi Role Aircraft 100 comprises the driving mechanism 15 be arranged in head capsule 11, the press keeping section 131 that the end that fixture 13 comprises relative output shaft 12 is arranged.Driving mechanism 15 can move between the first cooperation position and the second cooperation position, at the first cooperation position, makes the press keeping section 131 of fixture 13 be pressed on output shaft 12 by working head 14; At the second cooperation position, make to form gap between the press keeping section 131 of fixture 13 and working head 14, so that working head 14 is discharged from output shaft 12.By above structure, fixture 13 can be made to compress rapidly or discharge working head 14, thus working head 14 can be installed or removed rapidly.
Output shaft 12 is for being passed to working head 14 by output torque, and output shaft 12 is hollow form, is housed in the vertical portion 112 of head capsule 11, is axially supported at and is installed in parallel between ball bearing 114 in head capsule 11 and sealed-bearing 115.In present embodiment, output shaft 12 is split type, and specifically comprise axis body 121 and be connected to the axle bed 122 below axis body 121, both can not relatively rotate, to transmit driving torque.Wherein, axis body 121 is divided into three sections: epimere 123, stage casing 124 and hypomere 125, three sections be cylindric and from top to bottom diameter precedence increase.Sealed-bearing 115 is arranged on epimere 123, and ball bearing 114 is arranged on stage casing 124.Hypomere 125 is hollow form, and its one end away from stage casing 124 is radially outward protruded and is extended with two symmetrically arranged ears 1251, above ear 1251, along the circumferential direction offer thin-and-long gathering sill 1252.
Axle bed 122 is positioned at the below of axis body 121, it has carrier 126, carrier 126 comprises circular bottom wall 1261, the hollow cylindrical overcoat 1262 that axially upwards extends to form from the outward flange of diapire 1261 and from the lower surface of diapire 1261 axially to the projection 1263 of some circle distribution of downward-extension.Axle bed 122 also comprises the hollow cylindrical inner sleeve 127 upwards extended from the middle part of the diapire 1261 of carrier 126, and runs through the diapire 1261 of carrier 126 and the accepting hole 128 of inner sleeve 127.The inwall of the overcoat 1262 of carrier 126 is symmetrically formed two grooves 1264 axially arranged, for just accommodating two ears 1251 of axis body 121, by the cooperation of groove 1264 and ear 1251, relatively rotating, to transmit driving torque of restriction axis body 121 and axle bed 122.
Working head 14 is a kind of straight blade, for a person skilled in the art, is easy to expect, working head 14 also can be other annex, as saw blade, emery disc, scraper etc.This working head 14 horizontally set, it has for being arranged on tabular installation portion 141 on output shaft 12, for the cutting part 142 that cuts and the connecting portion 143 between installation portion 141 and cutting part 142.Wherein, installation portion 141 offers centre bore 144, be arranged with some installing holes 145 coordinated with the projection 1263 of output shaft 12 at the outer of centre bore 144.Installation portion 141 also offers away from one end of connecting portion 143 breach 146 being communicated with centre bore 144, thus working head 14 can be installed through fixture 13 from the side of output shaft 12 by breach 146.
Fixture 13 for working head 14 being pressed on the carrier 126 of output shaft 12, with steady job 14; Or release working head 14, to disassemble working head 14 from output shaft 12.Fixture 13, through the accepting hole 128 of output shaft 12, after coordinating, can axially movably be fixed by relative output shaft 12 with driving mechanism 15.Fixture 13 specifically comprises the ring-type press keeping section 131 being positioned at bottom and the elongated shaft 132 axially upwards extended from the middle part of press keeping section 131, and the end in bar portion 132 is provided with the holding section 133 of radially outward protruding extension, to connect with driving mechanism 15.In present embodiment, press keeping section 131 and bar portion 132 split are arranged, and are removably connected by screw thread.Obviously, press keeping section 131 and bar portion 132 also can be wholely set.
During installation, fixture 13 relatively driving mechanism 15 is fixedly installed, when driving mechanism 15 is changed between the first cooperation position and the second cooperation position, fixture 13 can be driven axially to move up and down, thus make the press keeping section 131 of fixture 13 compress or discharge working head 14.
Driving mechanism 15 comprises can the driving link 151 of relative motion and counterpart 152, mobile driving link 151, make driving mechanism 15 mobile conversion between the first cooperation position and the second cooperation position, and then fixture 13 can be driven axially to move up and down, compress to make the press keeping section 131 of fixture 13 or discharge working head 14.When the first cooperation position, fixture 13 can by the support of one of both driving link 151 and counterpart 152 axial restraint, in present embodiment, fixture 13 is specifically engaged part 152 and supports.
Below in conjunction with Fig. 2 to Fig. 4, describe the concrete structure of driving mechanism 15 in detail.The counterpart 152 that driving mechanism 15 comprises driving link 151 and is positioned at above driving link 151, driving link 151 and counterpart 152 are installed in output shaft 12, are specifically housed in the receiving space of axis body 121 and axle bed 122 formation.Fixture 13 is supported on counterpart 152, and driving link 151, when the axis X 1 of output shaft 12 rotates, drives counterpart 152 to move axially, and counterpart 152 and then drive fixture 13 move axially.
Driving link 151 is processed by rigid, comprise the body 153 of open column shape, from body 153 extend two protuberances 154 and two the first engaging pieces 155.Two protuberances 154 extend radially outwardly from the top of body 153, and insert in gathering sill 1252 corresponding on axis body 121, two protuberance 154 relative axis X1 Central Symmetries are arranged; Body 153 has upper horizontal surface 1531, and two first engaging pieces 155 form from axial upwards extension of the upper surface 1531 of body 153, and same Central Symmetry is arranged.First engaging piece 155 is close to protuberance 154, and the top axle of the first engaging piece 155 is to inclination, and form edge cam, top is first field of conjugate action 1551.First field of conjugate action 1551 raises along clockwise direction gradually, has the first lift angle.Being provided with first elastic component 156, first elastic component 156 one end between the overcoat 1262 of driving link 151 and axle bed 122 supports on overcoat 1262, and the other end is resisted against on driving link 151, thus can automatically return to initial position after driving link 151 is rotated.In addition, the upper surface 1531 of body 153 is provided with the first limiting section 1532, to coordinate with counterpart 152.When driving mechanism 15 is positioned at the second cooperation position, although driving link 151 is subject to the torsion of the first elastic component 156, under the effect of the first limiting section 1532, driving link still 151 can not rotate.In present embodiment, the first limiting section 1532 is specially the groove formed from upper surface 1531.
Counterpart 152 is processed by rigid equally, and it is arranged on the top of driving link 151 in the axial direction.Counterpart 152 is hollow form, and it comprises hollow cylindrical matrix 1521, is positioned at the roof 1522 above matrix 1521 and the some ribs 1523 from the outwardly extension in the outside of matrix 1521.On the madial wall of the hypomere 125 of axis body 121, corresponding rib 1523 is provided with depression (not shown), and rib 1523 is housed in corresponding depression, thus output shaft 12 is not rotatable relatively to make counterpart 152.The middle part of roof 1522 is provided with the recess 1524 of hollow, the bar portion 132 of fixture 13 is from top to bottom axially across the recess 1524 of counterpart 152, the holding section 133 of fixture 13 to be just housed in recess 1524 and to be supported by recess 1524, thus make fixture 13 be engaged part 152 to support, counterpart 152 can drive fixture 13 to move axially together.
Counterpart 152 has horizontal surface 1525, and its lower end is obliquely installed from lower surface 1525, forms two sections of second engaging pieces 1526 coordinated with the first engaging piece 155 of driving link 151 respectively.Matrix 1521 axially protrudes downwards from lower surface 1525 and is extended with the second limiting section 1527, to coordinate with the first limiting section 1532 of driving link 151, and the rotation of spacing driving link 151.The top axle of the second engaging piece 1526 is to inclination, and form edge cam, top is second field of conjugate action 1528.Second field of conjugate action 1528 raises in the counterclockwise direction gradually, has the second lift angle, and the second lift angle is equal with the first lift angle of driving link 151, can stably rotate by relative engagement part 152 to make driving link 151.
In present embodiment, Multi Role Aircraft 100 also comprises operating mechanism 16, manually operates operating mechanism 16, drives driving link 151 relative engagement part 152 to rotate around axis X 1, driving mechanism 15 is moved between the first cooperation position and the second cooperation position.Operating mechanism 16 specifically comprises the actuator 161 be arranged on output shaft 12, the guide 162 be arranged on actuator 161, push rod 163, the toggle 164 be connected on push rod 163, and is arranged on the second elastic component 165 between actuator 161 and head capsule 11.Manual promotion toggle 164, toggle 164 drives actuator 161 counter-guide 162 to rotate by push rod 163.
Actuator 161 roughly in hollow form cylinder, is set on the hypomere 125 of axis body 121, can rotates around axis X 1.Actuator 161 comprises superposed first cylinder 1611 and is positioned at bottom and spaced apartly on the lateral wall of larger the second cylinder 1612, first cylinder 1611 of external diameter is provided with the first groove 1613 and the second groove 1614 axially arranged.Second cylinder 1612 offers two symmetrically arranged driver slots 1615 bottom it, to coordinate with the protuberance 154 of driving link 151.One end of second elastic component 165 is housed in the first groove 1613 of the first cylinder 1611, and the other end is fixed on head capsule 11.
Guide 162 is circular, is set on the first cylinder 1611 of actuator 161, which is provided with the week upper chute 1621 arranged.Push rod 163 comprise the location division 1631 of the arc-shaped flaky vertically arranged, guide rod portion 1632 that self-align portion 1631 horizontally outward extends and toggle 164 is connected to guide rod portion 1632 free end on pin 1633, location division 1631 is housed in the second groove 1614 of the first cylinder 1611 of actuator 161, and guide rod portion 1632 is through the chute 1621 of guide 162.
As shown in Figure 3 and Figure 4, in order to make fixture 13 can move up and down better at axial direction, between the bar portion 132 and the axis body 121 of output shaft 12 of fixture 13, be axially provided with the 3rd elastic component 134.3rd elastic component 134 is set in the top in bar portion 132, and one end is resisted against on the holding section 133 of fixture 13, and the other end is resisted against on the roof of hypomere 125 of axis body 121.
Referring to figs. 2 to Fig. 4, the assembling process of subelement in the head capsule 11 that emphasis describes Multi Role Aircraft 100.First, the driving link 151 of driving mechanism 15 is arranged in the axle bed 122 of output shaft 12, and the first elastic component 156 is arranged between axle bed 122 and driving link 151; Then, counterpart 152 is mounted to the top of driving link 151, makes the second engaging piece 1526 of counterpart 152 corresponding with the first engaging piece 155 of driving link 151; Then, the bar portion 132 of fixture 13 is inserted in counterpart 152 from top to bottom, in the recess 1524 making the holding section 133 of fixture 13 be housed in counterpart 152 and interference fit, fixture 13 is engaged part 152 axial support, the end in bar portion 132 extends output shaft 12, then the press keeping section 131 of fixture 13 is threaded in the end in bar portion 132; Then, the 3rd elastic component 134 is set in the upper end in the bar portion 132 of fixture 13, make the 3rd elastic component 134 one end against holding section 133, the other end is against the diapire of the hypomere 125 of axis body 121; Then, be arranged on by axis body 121 on axle bed 122, Shi Liang ear 1251 is housed in two grooves 1264 respectively, and makes two protuberances 154 of driving link 151 be housed in two gathering sills 1252 of axis body 121 respectively; Finally, the actuator 161 of operating mechanism 16 is set on the hypomere 125 of axis body 121, again toggle 164 is set on the first cylinder 1611 of actuator 161 together with after push rod 163, guide 162 three combination, in the second groove 1614 that location division 1631 correspondence of push rod 163 is housed on the first cylinder 1611, and two protuberances 154 of driving link 151 are made to lay respectively in two driver slots 1615 of actuator 161; So far, in head capsule 11, the assembling of main element completes.
Below in conjunction with Fig. 4 to Figure 11, from the installation and removal process of the working head 14 of four state description present embodiment Multi Role Aircrafts 100.Operating mechanism 16 makes driving mechanism 15 can move conversion between the first cooperation position and the second cooperation position, when the second cooperation position, working head 14 can be inserted from side, the breach 146 of working head 14 is through behind bar portion 132, make the bar portion 132 of fixture 13 be positioned at the centre bore 144 of working head 14, the installation portion 141 of working head 14 is between the press keeping section 131 and the carrier 126 of output shaft 12 of fixture 13.Driving mechanism 15 moves to the process of the first cooperation position from the second cooperation position, fixture 13 axially moves, reduce the distance between press keeping section 131 and the diapire 1261 of carrier 126, finally make press keeping section 131 be pressed between press keeping section 131 and carrier 126 by the installation portion 141 of working head 14, working head 14 is fixed.On the contrary, driving mechanism 15 moves to the process of the second cooperation position from the first cooperation position, fixture 13 axially moves down, distance between the diapire 1261 of press keeping section 131 and carrier 126 increases, the installation portion 141 of working head 14 is released, and working head 14 can be disassembled from side from output shaft 12.
As shown in Figure 4 and Figure 5, for Multi Role Aircraft 100 is in the schematic diagram of the first state, now driving mechanism 15 is in the second cooperation position.In this position, driving link 151 overcomes the elastic force of the first elastic component 156, and relative engagement part 152 has turned clockwise certain angle, and the first engaging piece 155 of driving link 151 and the second engaging piece 1526 of counterpart 152 stagger completely, and the first elastic component 156 is compressed.Under the effect of the 3rd elastic component 134 and counterpart 152 self gravitation, counterpart 152 axially moves down certain distance, until the lower surface 1525 of counterpart 152 abuts to the upper surface 1531 of driving link 151.In addition, the second limiting section 1527 of counterpart 152 is accommodated in the first limiting section 1532 of driving link 151, thus can limit driving link 151 under the effect of the first elastic component 156, turning anticlockwise.Now, fixture 13 is in off-position, and between press keeping section 131 and carrier 126, the distance at interval is comparatively large, is greater than the thickness of the installation portion 141 of working head 14, therefore, working head 14 can be mounted to output shaft 12 from side or dismantles from output shaft 12.
It may be noted that the first cooperation position of above-mentioned driving mechanism 15 drives operating mechanism 16 to drive driving link 151 to turn an angle by external force, overcome the torsion of the first elastic component 156 simultaneously.At this cooperation position, even if cancelled external force, because the first limiting section 1532 of driving link 151 coordinates with the second limiting section 1527 of counterpart 152, although driving link 151 is subject to the twisting force of the first elastic component 156, still can not turning anticlockwise, thus make fixture 13 remain on off-position.
As shown in Figure 6 and Figure 7, for Multi Role Aircraft 100 is in the schematic diagram of the second state, now driving mechanism 15 is between the first cooperation position and the second cooperation position.User is by the pressure holding piece 131 of pressing fixture 13, and the elastic force that bar portion 132 overcomes the 3rd elastic component 134 by holding section 133 drives counterpart 152 axially to move certain distance, and the press keeping section 131 of fixture 13 not yet compresses the installation portion 141 of working head 14.In addition, in this state, although counterpart 152 has axially moved certain distance, the second limiting section 1527 of counterpart 152 has not yet been thrown off in the axial direction completely with the first limiting section 1532 of driving link 151, and the second limiting section 1527 still can play position-limiting action to the first limiting section 1532.Therefore, driving link 151, under the anticlockwise torsion of the first elastic component 156, still can not rotate, and now first field of conjugate action 1551 of driving link 151 forms a determining deviation in the axial direction with second field of conjugate action 1528 of counterpart 152.
As shown in Figure 8 and Figure 9, for Multi Role Aircraft 100 is in the schematic diagram of the third state, now driving mechanism 15 is still between the first cooperation position and the second cooperation position.Fixture 13 pushes away on further, and drives counterpart 152 axially to move further, and the second limiting section 1527 of counterpart 152 is axially separated from completely with the first limiting section 1532 of driving link 151.Driving link 151 under the twisting force of the first elastic component 156, starts to rotate counterclockwise after being removed by the resistance of counterpart 152.Driving link 151 relative engagement part 152 rotates around axis X 1, by coordinating of first field of conjugate action 1551 and second field of conjugate action 1528, drives counterpart 152 axially to move.In this state, still there is certain axial spacing between the press keeping section 131 of fixture 13 and the installation portion 141 of working head 14, now press keeping section 131 not yet extrudes installation portion 141, and working head 14 is clamped not yet.
As shown in Figure 10 and Figure 11, for Multi Role Aircraft 100 is in the schematic diagram of the 4th state, now driving mechanism 15 is in the first cooperation position, and working head 14 is clamped between the press keeping section 131 of fixture 13 and the carrier 126 of output shaft 12.Under the torsion of the first elastic component 156, driving link 151 rotates counterclockwise further, with the installation portion 141 making press keeping section 131 squeezed tight of fixture 13 live working head 14, with axial restraint working head 14.After axial spacing between the installation portion 141 and the press keeping section 131 of fixture 13 of working head 14 is eliminated completely, the recess 1524 that the holding section 133 due to fixture 13 is engaged part 152 supports, and therefore driving link 151 stops operating.In present embodiment, first lift angle of first field of conjugate action 1551 is less, be set to 9 degree, thus when first field of conjugate action 1551 of driving link 151 is coordinated with second field of conjugate action 1528 of counterpart 152, self-locking can be realized in the axial direction, when the axial load avoiding working head 5 to be subject to is excessive, and occur getting loose.In addition, move in the process of the first cooperation position at driving mechanism 15 by the second cooperation position, driving link 151 distance in rotary moving is greater than the distance that counterpart 152 axially moves, to ensure, when the first cooperation position, can form self-locking between driving link 151 and counterpart 152.
It may be noted that, in present embodiment, first lift angle of first field of conjugate action 1551 of driving link 151 is not limited to 9 degree, the material of driving link 151 is steel or iron, the coefficient of friction of first field of conjugate action 1551 is between 0.1 ~ 0.15, according to inclined-plane self-lock mechanism, therefore the first lift angle all can realize self-locking between 9 ~ 17 degree.Obviously, when driving link 151 is other material, the scope of the first lift angle also can correspondingly change.
Above, describe the clamping process of the working head 14 of present embodiment Multi Role Aircraft 100 in detail, the dispose procedure of working head 14 is then contrary with clamping process.With reference to Fig. 2 to Figure 11, when working head 14 is dismantled from output shaft 12 by needs, only manually need pull the toggle 164 of operating mechanism 16, actuator 161 is rotated clockwise.After actuator 161 turns an angle, its driver slot 1615 starts to engage with the protuberance 154 of driving link 151, and then drives driving link 151 to rotate clockwise.When driving link 151 relative engagement part 152 rotates, first field of conjugate action 1551 is relative with second field of conjugate action 1528 to be rotated, make counterpart 152 under the elastic force effect of the 3rd elastic component 134, axially move down, until the second limiting section 1527 of counterpart 152 is inserted in the first limiting section 1532 of driving link 151, the lower surface 1525 of counterpart 152 is made to abut to the upper surface 1531 of driving link 151.
In the process that counterpart 152 axially moves down, fixture 13 can be driven axially to move down, and fixture 13 releases certain distance in output shaft 12 the most at last, make to form gap between the installation portion 141 of press keeping section 131 and working head 14, release working head 14, thus working head 14 can be disassembled from output shaft 12.
In sum, the Multi Role Aircraft 100 of present embodiment is by arranging the driving mechanism 15 with driving link 151 and counterpart 152, on driving link 151 and counterpart 152, correspondence arranges first field of conjugate action 1551 and second field of conjugate action 1528 respectively, and first field of conjugate action 1551 and second field of conjugate action 1528 are all set to cam surface.When driving link 151 rotates around axis X 1, counterpart 152 can be driven to move axially by the cooperation of first field of conjugate action 1551 and second field of conjugate action 1528, thus make the press keeping section 131 of drive fixture 13 compress or discharge working head 14.This structure handled easily, and after the lift angle of first field of conjugate action 1551 is located at certain limit, inclined-plane self-locking can be realized, thus the stability of the work of guarantee.Driving mechanism 15 is when the first cooperation position, and driving link 151 rigid support counterpart 152, counterpart 152 is rigid support fixture 13 further, thus can prevent working head 14 from occurring when load is excessive loosening and skidding.After it may be noted that " rigid support " at this place refers to that fixture 13 driven-mechanism 15 supports, under axial force effect, axially can not can not there is deformation, can not be elastically compressed in driving mechanism 15.
In addition, by arranging the first elastic component 156 between driving link 151 and output shaft 12, can, when mounting fixing parts 13, driving link 13 be made to return back to the first cooperation position from the second cooperation position automatic rotation, save operating procedure, improve the simple operation of Multi Role Aircraft 100.
It may be noted that in present embodiment, driving link 151 is located axially at the below of counterpart 152, and first field of conjugate action 1551 is set to cam surface.The present invention is not limited to present embodiment, and first field of conjugate action also can be set to other curved surface, or plane acutangulate with axis X 1.In addition, the installation portion 141 of working head 14 is provided with breach 146, working head 14 can be mounted to output shaft 12 from side.The present invention is not limited to above-mentioned embodiment, the installation portion of working head also can not arrange breach, when this kind of working head is installed, the press keeping section of fixture first can be removed from bar portion, after working head being mounted to the bar portion of fixture, then press keeping section is installed in bar portion.
Detailed description of the invention two
In above-mentioned first embodiment, the driving link of driving mechanism is located axially at the below of counterpart, and obviously, driving link also can be arranged to the top being positioned at counterpart, now counterpart and output shaft can be set to one.Below in conjunction with Figure 12 to Figure 20, the second embodiment of the present invention is described.
In the lump with reference to Figure 12 and Figure 15, the Multi Role Aircraft 200 of present embodiment comprises housing 21, the output shaft 22 be arranged in housing 21, the driving mechanism 23 be arranged in output shaft 22, extend housing 21 operating mechanism 24, be arranged on the working head 25 of output shaft 22 end and the fixture 26 for steady job 25.Housing 21 has head capsule 211, and output shaft 22 is arranged in head capsule 211, and extends the lower end of head capsule 211.Operating mechanism 25 is arranged in output shaft 22, and part extends the upper end of head capsule 211.
Output shaft 22 is hollow form, comprises axis body 221 and is arranged on the axle bed 222 below axis body 221, and axis body 221 comprises cylindric epimere 2211 and to be positioned at below epimere 2211 and the larger hypomere 2212 of diameter, and axle bed 222 comprises tabular carrier 2221.
The bar portion 262 that fixture 26 comprises tabular press keeping section 261 and axially upwards extends from press keeping section 261, the free end in bar portion 262 is provided with T-shape holding section 263.Working head 25 comprises the installation portion 251 be arranged between the carrier 2221 of output shaft 22 and the press keeping section 261 of fixture 26, and installation portion 251 side is provided with breach 252.
Driving mechanism 23 can be changed between the first cooperation position and the second cooperation position, drives fixture 26 to move axially, thus the press keeping section 261 of fixture 26 is compressed or discharges the installation portion 251 of working head 25.Driving mechanism 23 comprises can driving link 231 and counterpart 232 in relative rotation, when driving link 232 rotates around the axis X 2 of output shaft 22, by with the engaging of counterpart 232, driving link 231 is axially moved by driving, and the final fixture 26 that drives axially moves.In addition, driving mechanism 23 is moving in the process of the first cooperation position from the second cooperation position, the distance that driving link 231 rotates is greater than its distance of axially moving, to ensure that driving mechanism 23 is when the first cooperation position, can stably support fixture 23, prevent fixture 23 from occurring loosening.
In conjunction with Figure 13 to Figure 15, driving link 231 is located axially at the top of counterpart 232, it open column shape sleeve 2312 comprising the base portion 2311 roughly in column and be arranged on above base portion 2311.Base portion 2311 comprises circular top wall 2313 and distinguishes axially extended first engaging piece 2314 from the both sides of roof 2313.First engaging piece 2314 is edge cam shape, and top forms first field of conjugate action 2315, first field of conjugate action 2315 and is specially cam surface.The top of roof 2313 is provided with circular depressions 2316, and bottom is axially protruded and is extended with the first limiting section 2317.The diapire of recess 2316 offers the mesopore 2318 that can pass for the holding section 263 of fixture 26, mesopore 2318 is deltiod, therefore after holding section 263 rotates to an angle, can be held in recess 2316, thus make fixture 26 and driving link 231 axially relative fixing.The lower end of sleeve 2312 is housed in the recess 2316 of base portion 2311, and interference fit, the top of sleeve 2312 forms diaxon extension protruding upward and the first drive division 2319 be oppositely arranged.
In present embodiment, counterpart 232 is one-body molded on the axle bed 222 of output shaft 22, and relative output shaft 22 is fixedly installed.Counterpart 232 comprises the open column shape matrix 2321 that axially upwards extends from the carrier 2221 of axle bed 222 and the less open column shape inner sleeve 2322 of size, and from the both sides of matrix 2321 axially extended second engaging piece 2323 respectively.Inner sleeve 2322 offers second limiting section 2324, second limiting section 2324 that can coordinate with the first limiting section 2317 of driving link 231 and be specially groove.First engaging piece 2315 corresponding matching respectively of the second engaging piece 2323 and driving link 231, shape is also substantially identical, is edge cam, has second field of conjugate action 2325 for cam surface.
Also be provided with the first elastic component 233 between driving link 231 and counterpart 232, driving mechanism 23 can be made to automatically return to the first cooperation position at the second cooperation position.Driving mechanism 23 also comprises the second elastic component 234 be axially disposed within above driving link 231, after driving link 231 axially moves, can compress the second elastic component 234.
Operating mechanism 24 rotates around axis X 2 for driving driving link 231, thus driving mechanism 23 is changed between the first cooperation position and the second cooperation position.Operating mechanism 24 specifically comprise be positioned at head capsule 211 top handle 241, be connected to drive rod 242 below handle 241, and be arranged on the 3rd elastic component 243 between handle 241 and drive rod 242.Drive rod 242 is roughly in cylindric, and its top is flat side, is connected un-rotatably with handle 241 circumference; The both sides, lower end of drive rod 242 offer groove respectively, form the second drive division 2421 coordinated with the first drive division 2319 of driving link 231.
When being rotated around axis X 2 by the handle 241 operating operating mechanism 24, handle 241 drives drive rod 242 to rotate, and drive rod 242 is coordinated with the first drive division 2319 of driving link 231 by the second drive division 2421, drives driving link 231 to rotate around axis X 2.When driving link 231 relative engagement part 232 rotates, by the cooperation of the first engaging piece 2314 and the second engaging piece 2323, driving link 231 drives fixture 26 axially to move up and down, thus the press keeping section 261 of fixture 26 is compressed or discharges the installation portion 251 of working head 25.Driving mechanism 23 is when the first cooperation position, and fixture 26 compresses working head 25, and when the second cooperation position, fixture 26 discharges working head 25.
Below in conjunction with Figure 16 to Figure 21, from the installation and removal process of the working head 25 of three state description present embodiment Multi Role Aircrafts 200.As shown in Figure 16 and Figure 17, in the first state, driving mechanism 23 is positioned at the second cooperation position.Now, driving link 231 have rotated certain angle after overcoming the elastic force of the first elastic component 233, and the first engaging piece 2314 of driving link 231 is thrown off with the second engaging piece 2323 of counterpart 232 and engaged.Driving link 231 drops to lower position in the axial direction, thus drives the press keeping section 261 of fixture 26 to move away from the carrier 222 of output shaft 22, makes to occur gap between the installation portion 251 of press keeping section 261 and working head 25, final release working head 25.In this state, the first limiting section 2317 of driving link 231 and the second limiting section 2324 of counterpart 232 coordinate, and restriction driving link 231, under the elastic force of the first elastic component 233, turns round clockwise, thus makes driving mechanism 23 remain on the second cooperation position.
As shown in Figure 18 and Figure 19, in the second state, driving mechanism 23 is between the second cooperation position and the first cooperation position.When driving mechanism 23 is positioned at the second cooperation position, manually press the press keeping section 261 of fixture 26, the bar portion 262 of fixture 26 drives driving link 231 axially to move together, and makes the first limiting section 2317 of driving link 231 and the second limiting section 2324 of counterpart 232 throw off engagement.In this state, driving link 231, by the elastic force effect of the first elastic component 233, starts relative engagement part 232 and rotates clockwise.When driving link 231 relative engagement part 232 rotates, by the cooperation of first field of conjugate action 2315 and second field of conjugate action 2325, driving link 231 is axially moved by driving further, and driving mechanism 23 is automatically moved towards the first cooperation position.
As shown in Figure 20 and Figure 21, in the third state, driving mechanism 23 is moved to the first cooperation position from the second cooperation position.In this state, in the second state, continue relative engagement part 232 and rotate around axis X 2, driving link 231 axially moves the driving link 231 of driving mechanism 23 further.Driving link 231 drives fixture 26 axially to move simultaneously, until the press keeping section 261 of fixture 26 compresses the installation portion 251 of working head 25, is stably fixed on the carrier 222 of output shaft 22 by working head 25.In the process, the first drive division 2319 of driving link 231 only slides in the second drive division 2421 of counterpart 232, circumference can not engage and be with fixed handle 241 to rotate.
Above-mentioned three state descriptions driving mechanism 23 moves to the first cooperation position by the second cooperation position, to compress and the process of steady job 25.The unloading process of working head 25 is then roughly contrary with the fixation procedure of working head 25, by operating mechanism 24, makes driving mechanism 23 move to the second cooperation position by the first cooperation position, and fixture 26 is axially moved down, to discharge working head 25.Specifically, when driving mechanism 23 is positioned at the first cooperation position, Manual operation handle 241 rotates clockwise, and the second drive division 2421 of handle 241 engages with the first drive division 2319 of driving link 231, drives driving link 231 relative engagement part 231 to rotate clockwise around axis X 2.After driving link 231 relative engagement part 232 rotates, relative second field of conjugate action 2325 of first field of conjugate action 2315 rotates clockwise, driving link 231 is subject to the effect of the second elastic component 234 simultaneously, start axially to move down, and the final fixture 26 that drives axially moves down, make the press keeping section 261 of fixture 26 discharge working head 25, thus the carrier 222 of working head 25 from output shaft 22 can be disassembled.
Detailed description of the invention three
In above-mentioned first and second embodiments, the driving link of driving mechanism is all rotate around the axis of output shaft, thus counterpart is moved axially, and driving mechanism is moved between the first cooperation position and the second cooperation position.But the present invention is not limited to said structure, driving mechanism of the present invention also can adopt other structure, as the straight line of driving link around the axes normal perpendicular to output shaft rotates.Below in conjunction with Figure 22 to Figure 26, third embodiment of the invention is described.
As shown in Figure 22 and Figure 24, present embodiment is a kind of Multi Role Aircraft 900 specifically, comprise head capsule 90, the output shaft 91 be arranged in head capsule 90, the fixture 92 that can axially movably be fixed in output shaft 91, the driving mechanism 93 driving fixture 92 to move axially, be arranged on working head 94 between fixture 92 and output shaft, and operationally drive the operating mechanism 95 of driving mechanism 93 movement.Driving mechanism 93 can move between the first cooperation position and the second cooperation position, thus fixture 92 is clamped or discharges working head 94.Driving mechanism 93 is also provided with the first elastic component 930, driving mechanism 93 can be made to automatically return to the first cooperation position from the second cooperation position.
Fixture 92 there is press keeping section 921 and from the central shaft of press keeping section 921 to the bar portion 922 upwards extended.As shown in Figure 22 and Figure 25, now driving mechanism 93 is in the second cooperation position, have certain interval between the press keeping section 921 of fixture 92 and the installation portion 941 of working head 94, the press keeping section 921 of the non-fixture 92 of working head 94 compresses, thus working head 94 can be disassembled from output shaft 91.As shown in Figure 23 and Figure 26, now driving mechanism 93 is in the first cooperation position, gap between the press keeping section 921 of fixture 92 and the installation portion 941 of working head 94 is eliminated, and the press keeping section 921 of working head 94 fixture 92 compresses, and working head 94 is clamped between fixture 92 and output shaft 91.
As shown in figure 24, in present embodiment, output shaft 91 has axis X 3, specifically comprises axis body 911 axle sleeve 912 and axle bed 913 that axially set gradually.Wherein, axle sleeve 912 is roughly in hollow cylindrical, and the bilateral symmetry of axle sleeve 912 offers two through hole 914, and the bottom of axle bed 913 is the carrier 9131 for installment work 94.Driving mechanism 93 specifically comprises driving link 931, is supported on the counterpart 932 on driving link 931 and is connected to the first elastic component 913 on driving link 931.When driving link 931 rotates, counterpart 932 can be driven axially to move up and down.
Driving link 931 has the axis X 4 perpendicular to axis X 3, and it comprises the cylindrical shaft portion 934 extended along axis X 4 and the cam part 935 being connected to one end, axle portion 934.Axle portion 934 other end relative with cam part 935 is processed with flat quadrate part 9341.Cam part 935 is roughly fan-shaped, for circumferential cam, and in being approximately perpendicular to the tabular of axis X 4, its have to axis X 4 close together low side 9351 and to axis X 4 distant high-end 9352, between low side 9351 and high-end 9352, common formation first field of conjugate action 9353, first field of conjugate action 9353 is cam surface.
In present embodiment, driving link 931 has two, and is symmetrical arranged relative to axis X 3.During assembling, diaxon portion 934 is arranged in the through hole 914 of axle sleeve 912 both sides, and can rotate around axis X 4, and two cam part 935 are housed in the inside of axle sleeve 912.First elastic component 933 is equipped with between each driving link 931 and axle bed 913, driving mechanism 93 is when the second cooperation position, first elastic component 933 to be stretched certain length by driving link 931, thus driving mechanism 93 can be made to automatically return to the first cooperation position from the second cooperation position.
In present embodiment, counterpart 932 is one-body molded with fixture 92, is arranged in the bar portion 922 of fixture 92.Obviously, counterpart 932 also can be arranged with fixture 92 split.Counterpart 932 is housed in axle sleeve 912, and is supported by the cam part 935 of driving link 931 in the axial direction.Counterpart 932, roughly in T-shape, comprises the tabular being positioned at top and coordinates section 936 and be positioned at the supporting section 936 coordinated below section 936.Coordinate section 936 perpendicular to axis X 3, the cross section perpendicular to axis X 3 is circular, and a segment distance is protruded relative to supporting section 936 respectively in both sides, thus forms the engaging piece 9361 coordinated with the cam part 935 of driving link 931 respectively.Two engaging pieces 9361 are axially supported at above the cam part 935 of driving link 931 respectively, second field of conjugate action 9362 coordinated with first field of conjugate action 9353 of cam part 935 is formed bottom engaging piece 9361, in present embodiment, second field of conjugate action 9362 is specially the plane perpendicular to axis X 3.
In addition, driving mechanism 93 also comprise be located at counterpart 932 and output shaft 91 axis body 911 between the second elastic component 938.In present embodiment, when driving mechanism 93 moves to the second cooperation position by the first cooperation position, by driving link 931 rotation drive counterpart 932 overcome the 3rd elastic component 938 elastic force and on move; Also can, when driving mechanism 93 is positioned at the second cooperation position, by axially pressing fixture 92, counterpart 932 be driven axially to move by fixture 92.
Operating mechanism 95 can manual operation, changes between the first cooperation position and the second cooperation position to make driving mechanism 93.In present embodiment, operating mechanism 95 mainly comprises handle 951, and handle 951 is generally u-shaped, and it has two relative arms 952, and the free end of arm 952 is provided with U-shaped fluting 953.Two flat quadrate parts 9341 of driving link 931 are housed in the fluting 953 of handle 951 respectively, thus during around axis X 4 turning handle 951,953 drive driving link 931 to rotate around axis X 4 with coordinating of flat quadrate part 9341 by slotting.
Below in conjunction with Figure 25 and Figure 26, specifically describe the installation and removal process of working head 94 in present embodiment.During use, manually pull handle 951 around axis X 4 reciprocating rotation, thus driving mechanism 93 is changed between the first cooperation position and the second cooperation position, thus fixture 92 is moved axially, the press keeping section 921 of fixture 92 is compressed or discharges the installation portion 941 of working head 94.When handle 951 rotates counterclockwise, by slot 953 with the coordinating of flat quadrate part 9341, drive driving link 931 to rotate; First field of conjugate action 9353 of driving link 931 engages with second field of conjugate action 9362 of counterpart 932, high-end 9352 are slided into successively from the low side 9351 of cam part 935, thus prop up counterpart 932 in the axial direction, counterpart 932 is axially moved, and then drive fixture 92 integral shaft upwards to move by the bar portion 922 of fixture 92, make the press keeping section 921 of fixture 92 compress working head 94.The process that driving mechanism 93 discharges working head 94 is then contrary, only when driving mechanism 93 is positioned at the first cooperation position, need pull handle 951 counterclockwise.
Concrete with reference to Figure 25, now driving mechanism 93 is positioned at the second cooperation position, there is comparatively wide arc gap between the press keeping section 921 of fixture 92 and the carrier 9131 of output shaft 91, therefore working head 94 can be mounted to output shaft 91 from side or disassemble from output shaft 91.In this position, handle 951 is approximately perpendicular to output shaft 91, and the low side 9351 of the cam part 935 of driving link 931 supports the engaging piece 9361 of counterpart 932.Under the effect of the second elastic component 938, counterpart 932 is axially displaced downwardly to lower position, and then drives fixture 92 axially to move down, and the spacing between the press keeping section 921 of fixture 92 and the installation portion of working head 94 is increased, final release working head 94.
Concrete with reference to Figure 26, when driving mechanism 93 is positioned at the second cooperation position, manual shaft is to the press keeping section 921 upwards pressing fixture 92, and the axis of elasticity that fixture 92 drives counterpart 932 to overcome the second elastic component 938 upwards moves.Now, under the elastic pulling force of the first elastic component 933, the counterclockwise automatic rotary of driving link 931 meeting, and then band fixed handle 951 is roughly rotated counterclockwise 90 degree, make driving mechanism 93 the second cooperation position as shown in Figure 18 move to the first cooperation position, finally make the press keeping section 921 of fixture 92 compress working head 94.Now, fixture 92 is engaged part 932 rigid support, and counterpart 932 is by driving link 931 rigid support, and therefore, the distance between the carrier 9131 of the relative output shaft 91 of press keeping section 921 of fixture 92 remains unchanged.After it may be noted that " rigid support " at this place refers to that fixture 92 driven-mechanism 93 supports, under axial force effect, axially can not can not there is deformation, can not be elastically compressed in driving mechanism 93.
Handle 951 is being rotated counterclockwise in process, driving link 931 is driven to rotate counterclockwise around its axis X 4, make first field of conjugate action 9353 of cam part 935 and the second field of conjugate action 9362 relative sliding of counterpart 932, the position of engagement moves to high-end 9352 from the low side 9351 of cam part 935 successively, thus make counterpart 932 overcome the elastic force of the second elastic component 938, axially move certain distance.When driving mechanism 93 is positioned at the first cooperation position, second field of conjugate action 9362 of the high-end 9362 support counterparts 932 of the cam part 936 of driving link 931, because first field of conjugate action 9353 is cam surface, therefore under certain condition, self-locking is formed between first cam surface 9353 and second field of conjugate action 9362, thus fixture 92 can be avoided to occur loosening, can stably clamp working head 94.
In present embodiment, moved between the first cooperation position and the second cooperation position by driving mechanism 93, make fixture 92 move axially to compress or discharge working head 94, thus can without the need under the effect of other aid, dismounting or installment work 94.In addition, the driving link 931 in present embodiment and counterpart 932 all adopt metal material, therefore, it is possible to ensure that fixture 92 is by rigid support, there will not be loosening, so that stably steady job 94.
By the understanding of above three detailed description of the invention, be appreciated that power tool of the present invention mainly by arranging driving link and the counterpart of relative motion, driving mechanism is moved between the first cooperation position and the second cooperation position.Fixture is supported on one of driving link and counterpart, when the first cooperation position, makes to be fixed on and is located axially at higher position to clamp working head; When the second cooperation position, fixture is presented axially in lower position to discharge working head.Driving link and counterpart can arrange first field of conjugate action and second field of conjugate action that can cooperatively interact, when driving mechanism is positioned at the first cooperation position, between two fields of conjugate action, form self-locking, thus can stably support works head.Driving link can the rotary motion of relative engagement part, and now first field of conjugate action can be set to cam surface, also can be inclined-plane, or can realize other curved surface of self-locking.
In addition, driving mechanism is also connected with the first elastic component on its driving link, after driving link can be made to move, automatically resets to initial position, to enable driving mechanism under certain condition, is automatically returned to the first cooperation position from the second cooperation position.Also be provided with the second elastic component between driving mechanism and output shaft, when driving mechanism moves to the second cooperation position from the first cooperation position, fixture can flexibly be released from output shaft by the second elastic component.
It may be noted that power tool of the present invention is not limited to above-mentioned embodiment, driving mechanism is not limited to adopt metal material, also can adopt non-metallic material, or elastic material.Driving link is also not limited to relative to counterpart rotational motion, also can be relative to counterpart translation, as long as one of both driving link or counterpart can be made axially mobile.In addition, driving link or driven member are also not limited to arrange first field of conjugate action and second field of conjugate action respectively, as long as one that is located axially at below in driving link or driven member arranges first field of conjugate action, another one arranges the point, the line that coordinate with this field of conjugate action.

Claims (17)

1. a power tool, comprising:
Housing;
Output shaft, can rotate oscillating traverse motion around himself axis, for installing and driving working head work, described output shaft is provided with the carrier extending described housing;
Fixture, comprises the press keeping section for being fixed on by described working head on the carrier of described output shaft; And
Driving mechanism, can change between the first cooperation position and the second cooperation position, at described first cooperation position, makes the press keeping section of described fixture compress described working head; At described second cooperation position, the press keeping section of described fixture is made to discharge described working head;
It is characterized in that: described driving mechanism is provided with the first elastic component, press described fixture when moving axially, under the effect of described first elastic component, described driving mechanism returns to described first cooperation position automatically from described second cooperation position, described driving mechanism comprises driving link and the counterpart of relative motion, mobile described driving link, can drive described fixture to move axially.
2. power tool as claimed in claim 1, is characterized in that: one end of described elastic component is connected on described driving link, and the other end is connected with described housing or described output shaft.
3. power tool as claimed in claim 1, is characterized in that: drive described counterpart to move axially when described driving link moves, described fixture is supported on described counterpart.
4. power tool as claimed in claim 1, is characterized in that: the relatively described counterpart of described driving link moves axially, and described fixture is supported on described driving link.
5. power tool as claimed in claim 1, is characterized in that: the relatively described counterpart rotational motion of described driving link.
6. power tool as claimed in claim 5, is characterized in that: described driving link rotates around the axis of described output shaft or the straight line of the axis that is parallel to described output shaft.
7. power tool as claimed in claim 5, is characterized in that: described driving link rotates around the straight line of the axis perpendicular to described output shaft.
8. power tool as claimed in claim 1, it is characterized in that: described driving link is provided with the first engaging piece, described counterpart is provided with the second engaging piece coordinated with described first engaging piece, one of described first engaging piece and described second engaging piece are provided with first field of conjugate action for coordinating.
9. power tool as claimed in claim 8, is characterized in that: described first field of conjugate action is cam surface.
10. power tool as claimed in claim 8, it is characterized in that: described first field of conjugate action is plane, the axis of described first field of conjugate action and described output shaft acutangulates.
11. power tools as claimed in claim 8, is characterized in that: the another one among described first engaging piece and the second engaging piece is provided with second field of conjugate action coordinated with described first field of conjugate action.
12. power tools as claimed in claim 1, is characterized in that: when described driving mechanism is positioned at described second cooperation position, form self-locking between described driving link and described counterpart.
13. power tools as claimed in claim 1, is characterized in that: described driving mechanism moves to the process of described first cooperation position from described second cooperation position, and the distance of described driving link movement is greater than the distance of described fixture movement in the axial direction.
14. power tools as claimed in claim 1, it is characterized in that: described driving link is provided with the first limiting section, described counterpart is provided with the second limiting section, when driving mechanism is positioned at the second cooperation position, described first limiting section coordinates with described second limiting section, limits the rotation of described driving link.
15. power tools as claimed in claim 1, it is characterized in that: when described driving mechanism is positioned at described second cooperation position, described fixture is by described driving mechanism rigid support, and the axial distance between the carrier of the relatively described output shaft of press keeping section of described fixture remains unchanged.
16. power tools as claimed in claim 1, is characterized in that: described power tool also comprises operating mechanism, by operating described operating mechanism, described driving mechanism can be driven to move between the first cooperation position and the second cooperation position.
17. power tools as claimed in claim 1, it is characterized in that: between described driving mechanism and output shaft or housing, the second elastic component is installed, when described driving mechanism moves to the second cooperation position by the first cooperation position, described fixture is ejected from described output shaft by described second elastic component.
CN201110447995.2A 2011-12-28 2011-12-28 Power tool Active CN103182708B (en)

Priority Applications (4)

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CN201110447995.2A CN103182708B (en) 2011-12-28 2011-12-28 Power tool
PCT/CN2012/001747 WO2013097297A1 (en) 2011-12-28 2012-12-28 Power tool
EP12861565.5A EP2799188A4 (en) 2011-12-28 2012-12-28 Power tool
US14/369,676 US9821430B2 (en) 2011-12-28 2012-12-28 Power tools

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US10906153B2 (en) * 2018-06-01 2021-02-02 Makita Corporation Work tool

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CN1946517A (en) * 2004-04-23 2007-04-11 C.&E.泛音有限公司 Powered hand tool comprising a clamping device for a tool
EP2070659A1 (en) * 2007-12-07 2009-06-17 Black & Decker, Inc. Power Tool with Spindle Lock
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
CN201736204U (en) * 2010-07-12 2011-02-09 苏州宝时得电动工具有限公司 Power tool
CN201792324U (en) * 2010-09-26 2011-04-13 南京德朔实业有限公司 Handheld power tool with working element rapid clamping device

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DE29809788U1 (en) * 1998-05-30 1999-09-30 Fein C & E Power-driven hand tool
CN1946517A (en) * 2004-04-23 2007-04-11 C.&E.泛音有限公司 Powered hand tool comprising a clamping device for a tool
EP2070659A1 (en) * 2007-12-07 2009-06-17 Black & Decker, Inc. Power Tool with Spindle Lock
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
CN201736204U (en) * 2010-07-12 2011-02-09 苏州宝时得电动工具有限公司 Power tool
CN201792324U (en) * 2010-09-26 2011-04-13 南京德朔实业有限公司 Handheld power tool with working element rapid clamping device

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