CN105437128B - Power tool and the method for operating for the power tool - Google Patents
Power tool and the method for operating for the power tool Download PDFInfo
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- CN105437128B CN105437128B CN201510923437.7A CN201510923437A CN105437128B CN 105437128 B CN105437128 B CN 105437128B CN 201510923437 A CN201510923437 A CN 201510923437A CN 105437128 B CN105437128 B CN 105437128B
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- main shaft
- work
- power tool
- operating parts
- axially
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The present invention relates to a kind of power tool, including：Casing；Motor, is arranged in casing and outputting rotary power；Main shaft, is connected with one of several work heads and for driving the work head to rotate；Transmission mechanism, is arranged between motor and main shaft and the rotary power that motor is exported can be passed to main shaft；Storage folder, it is arranged in casing, storage folder includes for housing the collecting storehouse of the work heads that several are set up in parallel, axially-movable the off-position that main shaft can separate in the operating position connected through collecting one of storehouse and several work heads and with one of several work heads；Power tool also includes the position-limit mechanism being arranged between casing and main shaft, position-limit mechanism includes the limited block for operationally moving between two positions, in first position, main shaft is in operating position, limited block limits the main direction motion axially away from work head, in the second place, main shaft is in off-position, and limited block allows the main direction axially away from work head to move.
Description
The application is " power tool and for the power tool entitled filed in applicant's August in 2011 6 days
Method of operating ", the divisional application of the Chinese invention patent application of Application No. 201110224257.1.
Technical field
The present invention relates to a kind of power tool, more particularly to a kind of storage and quick-replaceable drill gun of achievable work head
Class power tool.
Background technology
In existing drill gun class power tool, electric drill, electric screw driver and impact drill are generally included.
Electric screw driver is for by a kind of conventional electric tool on screw-driving to workpiece.Need during use
When the screw tightened by different size, different work heads, that is, screwdriver bit are changed according to the difference of screw specification, i.e., will
The original work head installed is removed, the work head of another kind of structure is then loaded onto.In the use for needing the frequent head that more changes jobs
Under occasion, great inconvenience is brought to operator, on the one hand cause
Head is placed everywhere and is easily lost.Although there is some realize the storage of work head and quick-replaceable in some hand-operated tools,
It is that the inherent defect due to hand-operated tools, i.e. moment of torsion are little, operation is hard so that operator is easy to fatigue, causes inefficiency,
Be not suitable for using as the instrument of specialty in industrial sector.
Chinese utility model patent CN201086280Y discloses a kind of Multi-tool head electric tool, including power tool body
With multi-knife-head rotaring wheel structure, multi-knife-head rotaring wheel structure includes a multi-knife-head runner cylinder that can house multiple cutter heads, and multi-knife-head turns
Cylinder is axially slidable is connected with tool body for wheel, when multi-knife-head runner cylinder slides into the position away from tool body, can lead to
Rotation multi-knife-head runner cylinder is crossed so as to the cutter head for selecting to need.But when multi-knife-head runner cylinder is away from tool body, its main shaft
It is exposed, dust, powder can be entered during multi-knife-head runner cylinder slides inside electric tool or multi-knife-head
The inside of runner cylinder, time length can cause the multi-knife-head runner cylinder cannot to rotate carries out cutter head selection, or directly results in electronic
Instrument cannot be used.And work head is against on workpiece when work, such main shaft needs to bear reciprocal active force,
Main shaft can bring pressure to transmission mechanism and moment of torsion can not be delivered to main shaft so as to transmission mechanism.
Further, since electric tool randomness in use, thus when shutting down on main shaft installment work head cylinder
The angle of wall be it is uncertain, and the head that works to return the angle of runner cylinder be also uncertain, so in the mistake of the head that more changes jobs
Cheng Zhong, it is possible to there is angle and the dislocation of work brilliance degree of the barrel of main shaft, cause work head correctly, smoothly cannot enter
Enter the situation of main shaft.Chinese utility model patent CN201086280Y discloses multi-knife-head runner cylinder and switch gearing, works as multitool
When head runner cylinder slides into the position away from tool body, can pass through to rotate multi-knife-head runner cylinder so as to the cutter head for selecting to need；
When multi-knife-head runner cylinder slides back into tool body, which drives gangbar movement, gangbar press switch and make motor work
Make, rotating a certain angle makes sleeve angle be engaged with cutter head angle.On the one hand, the regular motor of startup in short-term is easily made
Shorten into electrical machinery life or damage；The angle staggered between another aspect sleeve and cutter head typically will not be very big, ordinary circumstance
The handle of lower cutter head is hexagonal, and the angle that remaining is staggered with sleeve is not over 60 degree, even and if electric motor micro-motion once also will
Take a turn for the better multi-turn, if motor rotation is not in place, not only cutter head cannot accurately, smoothly enter sleeve, it is also possible to cause motor
Or the damage of cutter head.
And, when cutter head is changed, cutter head is first retracted into runner cylinder by needs, knife during in order to prevent runner cylinder from moving axially
Head is held and left from runner cylinder by magnet, and Chinese utility model patent CN201086280Y discloses which and passes through on cutter head
The mode of retainer ring is set to prevent cutter head from disengaging with runner cylinder, but such cutter head needs are especially customized so that instrument
Using not with versatility.And it is directly more unstable by main shaft band dynamic cutter head speed ratio, it is because the length of main shaft is longer, main
The bounce of axle is bigger, brings some potential danger to the user of instrument.Furthermore, because runner cylinder need axial movement with
Main shaft separates, it is easy to cannot clean into dust and other impurities.
The content of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of power tool of reliable operation.
The technical solution adopted for the present invention to solve the technical problems is：A kind of power tool, including：Casing；Motor, if
Put in casing, and outputting rotary power；Main shaft, is connected with one of several work heads and for driving described several work
The rotation of one of head；Transmission mechanism, is arranged between motor and main shaft and the rotary power that motor is exported can be passed to main shaft；Deposit
Chu Jia, is arranged in casing, and the storage folder is included for housing the collecting storehouse of the work heads that several are set up in parallel, the master
Axle can be through housing operating position that one of storehouse and several work heads connect and one of with several work heads
Axially-movable between separate off-position；The power tool also includes the position-limit mechanism being arranged between casing and main shaft,
The position-limit mechanism includes the limited block for operationally moving between two positions, and in first position, the main shaft is in work
Position, the limited block limit the main direction motion axially away from work head, and in the second place, the main shaft is in release position
Put, the limited block allows the main direction axially away from work head to move.
Preferably, the power tool also includes being arranged at the operating parts can move axially along main shaft on casing, described
Operating parts drives the main shaft axially-movable.
Preferably, the operating parts is provided with the solution lock section offseted with limited block, and the operating parts is by the solution lock section
Drive limited block to move between the first position and the second position, and in the second place, the operating parts can drive
The main shaft axially-movable.
Preferably, a part for the storage folder is housed in the casing, and another part is covered simultaneously by the operating parts
And expose as operating parts is moved.
Preferably, gathering sill, the operating parts and machine are axially arranged with along main shaft in the operating parts and casing alternative one
Another of both shells is provided with the guide rail matched with gathering sill, and the operating parts is slided in gathering sill by the guide rail
And relative to casing along main shaft axially-movable.
Preferably, the first projection and the second projection are provided with along the main shaft axially spaced-apart inside the operating parts, it is described
Main shaft is provided with fixed block away from one end of the storage folder, and the fixed block is relative to main shaft axial restraint and is located at described the
Between one projection and the second projection, the fixed block being capable of the axially-movable between the first projection and the second projection.
Preferably, the casing can axially be divided into the motor part for being provided with motor along main shaft, be provided with the driving section of transmission mechanism,
The storage part of storage folder is provided with, when the main shaft is in operating position, the operating parts is axially and the driving section and storage part
Overlap；When the main shaft is in off-position, the operating parts is axially Chong Die with the motor part, with driving section part weight
It is folded.
Preferably, the limited block is around pivoting perpendicular to main shaft axial direction.
Preferably, the limited block is around pivoting parallel to main shaft axial direction.
Preferably, the limited block is along perpendicular to main shaft axially direction linear motion.
Preferably, the power tool also includes for connecting the output shaft of work head, one end of the main shaft with it is described
Transmission mechanism can transmitting torque connection, the other end of the main shaft can be connected with the output shaft and be driven by output shaft
Work head rotation.
Preferably, the position-limit mechanism also includes to first position the flexible member for compressing limited block.
Preferably, gear-box is provided with the casing, the transmission mechanism is housed in the gear-box, the gear-box
Toothed wheel box cover plate is provided with and storage folder between.
Preferably, the storage folder is rotatably supported between casing and the toothed wheel box cover plate.
Preferably, the transmission mechanism includes with the planetary gear reducing mechanism of motors and with the main shaft being connected
Pinion gear mechanism, be provided with the gear-box between the planetary gear reducing mechanism and the pinion gear mechanism every
Plate.
Preferably, the pinion gear mechanism includes the first gear being connected with the planetary gear reducing mechanism and described
3rd gear and while the second gear engaged with first gear and the 3rd gear of main shaft connection.
Also a kind of method of operating of power tool of the present invention, the power tool include：Casing；Motor, is arranged on casing
It is interior, and outputting rotary power；Main shaft, is connected with one of several work heads and for driving the rotation of one of described several work heads
Turn；Transmission mechanism, is arranged between motor and main shaft and the rotary power that motor is exported can be passed to main shaft；Storage folder, if
It is placed in casing, the storage folder includes that the main shaft can for housing the collecting storehouse of the work heads that several are set up in parallel
Through housing operating position that one of storehouse and several work heads connect and separate with one of several work heads
Axially-movable between off-position；The power tool also includes the position-limit mechanism being arranged between casing and main shaft, the limit
Position mechanism includes the limited block for operationally moving between two positions, and in first position, the main shaft is in operating position, institute
State limited block and limit the main direction motion axially away from work head, in the second place, the main shaft is in off-position, the limit
Position block allows the main direction axially away from work head to move, and the method for operating is comprised the following steps：1) limited block is operated to be in
The second place, releases restriction of the limited block to main shaft axially-movable；2) mobile main shaft is in off-position；3) operation storage folder,
Select the work head for needing；4) mobile main shaft returns back to operating position.
Preferably, the power tool also includes being arranged at the operating parts can move axially along main shaft on casing, described
Operating parts drives the main shaft axially-movable, the operating parts to be provided with the solution closing piece offseted with limited block, and the operating parts leads to
Crossing the solution closing piece drives limited block to move between the first position and the second position, and the method for operating also includes：By axle
Limited block is made after the second place to moving operation part, operating parts is continued to move to and is driven main shaft to be in off-position.
Preferably, the method for operating also includes：Moving operation part drives main shaft behind off-position, the storage folder
A part with operating parts move and expose.
Preferably, the position-limit mechanism also includes to first position the flexible member for compressing limited block, the method for operating
Also include：After the main shaft returns back to operating position, the limited block is compressed by elasticity and returns back to first position.
Compared with prior art, the invention has the beneficial effects as follows：The power tool of the present invention in the course of the work can be effective
Restriction main axle moving, it is ensured that higher reliability.
Description of the drawings
Fig. 1 is sectional view when power tool in the preferred embodiment for the present invention is in running order.
Fig. 2 is that the power tool in Fig. 1 is in sectional view when more changing jobs head status.
Fig. 3 is the part isometric exploded view of power tool in Fig. 1.
Fig. 4 is the stereogram of power tool running part in Fig. 1.
Fig. 5 is the stereogram of the slip lid of power tool in Fig. 1.
Fig. 6 is the schematic diagram of the position-limit mechanism first embodiment of power tool in Fig. 1, and now position-limit mechanism is in locking
State.
Fig. 7 is similar to Fig. 6, and wherein position-limit mechanism is in released state.
Fig. 8 is the schematic diagram of the position-limit mechanism second embodiment of power tool in Fig. 1, and now position-limit mechanism is in locking
State.
Fig. 9 is similar to Fig. 8, and wherein position-limit mechanism is in released state.
Figure 10 is the schematic diagram of the 3rd embodiment of position-limit mechanism of power tool in Fig. 1, and now position-limit mechanism is in lock
Determine state.
Figure 11 is similar to FIG. 10, and wherein position-limit mechanism is in released state.
Figure 12 is the schematic diagram that the first embodiment that work head is retreated is limited when power tool more changes jobs in Fig. 2.
Figure 13 is schematic diagram of the block piece in first position in Figure 12.
Figure 14 is schematic diagram of the block piece in the second place in Figure 12.
Figure 15 is the schematic diagram that the second embodiment that work head is retreated is limited when power tool more changes jobs in Fig. 2.
Figure 16 is schematic diagram of the block piece in first position in Figure 15.
Figure 17 is schematic diagram of the block piece in the second place in Figure 15
Figure 18 is the schematic diagram of the first embodiment of the output shaft of power tool in Fig. 1.
Figure 19 is the front view of the output shaft of power tool in Figure 18.
Figure 20 is the schematic diagram of the second embodiment of the output shaft of power tool in Fig. 1.
Figure 21 is the front view of the output shaft of power tool in Figure 20.
Figure 22 is the schematic diagram of the 3rd embodiment of the output shaft of power tool in Fig. 1.
Figure 23 is the front view of the output shaft of power tool in Figure 22.
Wherein,
1. 2. motor of casing, 3. transmission mechanism
4. 5. Working head quick-changing mechanism of output shaft, 6. battery
7. button switch 8,8a, 8b. position-limit mechanism 9. work head
11. handle, 13. fore shell, 15. gathering sill
21. motor shaft, 22. gear-box, 30. pinion gear mechanism
31. planetary gear reducing mechanism, 40. sleeve, 41. through hole
45. deep gouge of step in 42. radial protrusions 43.
The storage folder of 50. fixed block, 51. main shaft 52.
53. slip lid, 54. steel cap 56.U type springs
57. shell fragments 81,81a, 81b. limited block 82,82a. bearing pins
83. torsion spring 83b. springs, 131. perforate
221. dividing plate, 223. toothed wheel box cover plate, 225. arched member
The 3rd gear of 301. first gear, 302. second gear 303.
411. bottom surface, 412. side, 413. side
421. inclined-plane, 511. magnet, 512. annular groove
521. work heads house 522. pressing plate 523. of storehouse and are open
533. inclined-plane of the solution closing piece of 526.U type grooves 532.
535. first 536. second projection of projection, 537. tread plate
571. elasticated end, 813. side
Specific embodiment
In the preferred embodiment of power tool of the present invention, power tool is powered screwdriver, according to power source not
With can be divided into pneumatic screw driver, surge screwdriver and electric screw driver, also has direct current and dividing of exchanging in electric screw driver, this
It is bright to be preferably specifically described by taking DC electric screwdriver as an example.
Referring to figs. 1 to shown in Fig. 3, the DC electric screwdriver includes casing 1, motor 2, battery 6, transmission mechanism 3, work
Head quick-changing mechanism 5 and output shaft 4.Casing 1 is closed up by screw (not shown) by symmetrical two half shells and assembles,
Which has 11 part of handle that horizontal component and K angled with horizontal component are arranged, and currently preferred angle K is arrived at 100 degree
Between 130 degree, such gripping handle 11 can be pleasant when operating.Button switch 7, battery are provided with the top of 11 part of handle
6 bottoms for being fixed on 1 handle of casing, 11 part, 3 part of transmission mechanism are fixed and are housed in the horizontal component of casing 1.As excellent
The embodiment of choosing, the battery 6 can be lithium ion batteries.It should be noted that lithium ion battery described here is negative pole
General name of the material for the rechargeable battery of elemental lithium, according to the difference of positive electrode, which may make up many systems, such as " lithium manganese " electricity
Pond, " lithium iron " battery etc..In the present embodiment, lithium ion battery is the lithium ion battery of section 3.6V (volt).Certainly, battery
6 can also be the battery types well known to those skilled in the art such as NI-G, ni-mh.
(with the right side of drawing as rear) includes the planetary gear reducing mechanism driven by motor 2 to transmission mechanism 3 from the front to the back
31 and pinion gear mechanism 30, wherein pinion gear mechanism 30 is connected with Working head quick-changing mechanism 5, and passes through Working head quick-changing mechanism 5
The rotary motion of motor 2 is passed to into output shaft 4.Wherein Working head quick-changing mechanism 5 is included for storing different work heads
Storage folder, it is first-class that work head here refers mainly to the conventional crosspoint tip screwdriver head of electric screw driver, flat blade screwdriver, fast by arranging work head
Converting mechanism 5 can when electric screw driver is tightened or unclamps different screws the different work head of quick-replaceable.
According to the composition of above electric screw driver, electric screw driver can divide (with the right side of drawing as rear) successively from the front to the back
Into motor part D for arranging motor, the driving section C of transmission mechanism 3 is set, the storage part B of storage folder is set and output shaft is set
Output section A.
Motor 2 in the preferred embodiment for the present invention is motor, and motor is with the motor extended anteriorly out from electric machine casing
Axle 21.Motor is fixed in casing 1, and a gear-box 22 is fixed in casing 1 and is located at the front portion of motor, and gear-box 22 is used to receive
Hold planetary gear reducing mechanism 31 and pinion gear mechanism 30.Wherein planetary gear reducing mechanism 31 has three-level deceleration system, electricity
The extension of arbor 21 is engaged with planetary gear reducing mechanism 31, and planetary gear reducing mechanism 31 communicates rotational motion to little gear machine
Structure 30.So motor operation when, by planetary gear reducing mechanism 31, pinion gear mechanism 30, finally exported by output shaft 4.
In present embodiment, reducing gear is made up of to obtain wanted output speed three-level deceleration system, in other embodiment
In, depending on the rotating speed of required output, reducing gear can only include one-level or double reduction system, it is also possible to subtract including more stages
Speed system.
Pinion gear mechanism 30 is also housed in 22 in gear-box, by planetary gear reducing mechanism 31 and pinion gear mechanism
Arrange dividing plate 221 to separate the two between 30, and toothed wheel box cover plate 223 be set between gear-box 22 and Working head quick-changing mechanism 5,
So transmission mechanism 3 can be separated with storage folder 52, i.e., transmission mechanism 3 and storage folder 52 are separate.Pinion gear mechanism
30 include with planetary gear reducing mechanism 31 can the first gear 301 that is connected of transmitting torque, be connected with Working head quick-changing mechanism 5
3rd gear 303 and the second gear 302 engaged with first gear 301 and the 3rd gear 303, second gear 302 is by first
The rotation of gear 301 passes to the 3rd gear 303, and the two ends of each gear are supported by axle sleeve.The middle part of dividing plate 221 sets
The end face for having the hole passed through for the axle of first gear 301, dividing plate 221 is provided with the groove for mounting sleeve, supports little gear machine
The rear axle housing of structure 30 is fixed on dividing plate 221, and front shaft sleeve is fixed on toothed wheel box cover plate 223, toothed wheel box cover plate 223 and gear-box
22 can be fixedly linked by screw, buckle etc., thus, i.e. can be 31 points of pinion gear mechanism 30 and planetary gear reducing mechanism
Open, while and both can be closed, prevent dust, powder etc. from entering inside transmission mechanism 3, it is also possible to prevent letting out for lubricating oil
Leakage.It is intended merely to make the inner space of instrument compacter in addition, arranging three gears, so as to not affect the attractive in appearance of outside.When
So, it is also possible to be arranged as required to into two gears, one is connected with planetary gear reducing mechanism 31, another and chuck quick change
Mechanism 5 is connected.In addition, transmission mechanism 3 is not limited to above-described form, transmission mechanism 3 can only include planetary gear
Reducing gear 31, or only include pinion gear mechanism 30, or other rotary motion transmission mechanisms, such as ratchet mechanism, turbine
Mechanism etc..
Working head quick-changing mechanism 5, is connected between output shaft 4 and pinion gear mechanism 30, including can pass with the 3rd gear 303
The main shaft 51 of torque delivery connection, work head store folder 52 and operation axis 51 are moved axially and deposited with passing through or leaving work head
The slip lid 53 of storage folder 52.Main shaft 51 can be connected with output shaft 4 and drive output shaft 4 to rotate, and fore shell 13 is connected with casing 1,
A part for work head storage folder 52 is housed in fore shell 13, and another part is covered with the movement of slip lid 53 and revealed by slip lid 53
Go out.Currently preferred storage folder 52 is cylindrical shape, convenient to rotate, while it is little to take up room, naturally it is also possible to arrange squarely
Or triangle etc..When electric screw driver works, slip lid 53 is abutted with fore shell 13, so can be work head
Storage folder 52 and main shaft 51 are all closed.On toothed wheel box cover plate 223, the position of correspondence main shaft 51 is provided with what is passed through for main shaft 51
Hole, is extended with arched member 225 around 51 axis of main shaft on gear-box 22, and arched member 225 can be wholely set with gear-box 22,
Can be provided separately, by arrange arched member 225 can will be main shaft 51 partially enclosed, more changed jobs in electric screw driver
Head 9 when, i.e., slip lid 53 move to the position of rearmost end also will not it is main shaft 51 exposed out, can so prevent dust, powder
The inside of the entering tools such as end.And, toothed wheel box cover plate 223 extends to the end face of arched member 225, so as to vertically by driver
3 integrally closed of structure is together.In the course of the work, work head storage folder 52 can be closed by slip lid 53, so as to prevent ash
Dirt is entered, and when needing more to change jobs, exposes work head storage folder 52, convenient selection different work slip lid 53 is removed by
Head, is so accomplished by slip lid 53 with certain length, when slip lid 53 moves to the operating position abutted with fore shell 13, slip lid
53 with storage part B and driving section C axial overlaps, when slip lid 53 moves to the position of replaceable work head, slip lid 53 and motor
Portion's D axial overlaps, and with driving section C portion axial overlap.Certainly, the mode of the movement of slip lid 53 also has a lot, such as slip lid 53
It is rotatably mounted on casing 1, rotates between two positions of storage folder 52 covering storage folder 52 and exposing；Or similar to
The mode of sliding door, can open or close；Or the mode of window for being connected to casing 1 for pivoting etc., can realize
Storage folder 52 is closed during work, storage folder 52 is exposed when needing more to change jobs.
Output shaft 4 is form of sleeve, in which can installment work 9, and work 9 can be driven to rotate, the present invention passes through
Main shaft 51 inserts output shaft 4 and drives output shaft 4 to rotate, and then will rotation by way of output shaft 4 drives work 9 to rotate
Motion passes to work 9, can so use the work 9 of standard, and without the need for collecting work 9 is opened up on main shaft 51
Hole, it is to avoid the excessive weight and volume for increasing whole machine of 51 diameter of main shaft.Output shaft 4 is supported on fore shell 13 by a sleeve 40
In axial aperture 131, sleeve 40 is fixed in the perforate 131 of fore shell 13, provides radial support and axially position to output shaft 4.
So, directly drive the rotation of work 9 for output shaft, shorten the distance of moment of torsion transmission, so as to the use of instrument more may be used
Lean on.It is above-described be main shaft by way of output shaft indirect belt starts building to make head rotation, but, those skilled in the art hold very much
It is readily conceivable that other transmission means to substitute, such as main shaft directly drives work head to rotate, i.e., main shaft is directly with work head with can
The mode of transmitting torque connects.
Fig. 1 to Fig. 3 coordinates with reference to shown in Fig. 5, and main shaft 51 is six square shafts, and on main shaft 51, axial restraint is provided with a fixed block
50, the rear end of main shaft 51 is rotatably against on fixed block 50, and slip lid 53 can drive master by way of being connected with fixed block 50
Axle 51 is moved.The inside of slip lid 53 is provided with the first projection 535 and the second projection 536 along 51 axially spaced-apart of main shaft, in electric screw
The working condition of knife, the first projection 535 are had apart from S with 50 axially spaced-apart of fixed block, when slip lid 53 is slided backward, i.e., towards motor
2 direction is slided, and has slided after S, and the first projection 535 is axially abutted with fixed block 50, fixes so as to slip lid 53 drives
Block 50 drives main shaft 51 to move axially backward then；In the state of the replaceable work head of electric screw driver, the second projection 536 with it is solid
Determining 50 axially spaced-apart of block has apart from S, and when 53 forward slip of slip lid, i.e., the direction towards output shaft 4 is slided, slided apart from S it
Afterwards, the second projection 536 is axially abutted with fixed block 50, so as to slip lid 53 drives fixed block 50 to drive main shaft 51 axially forward then
It is mobile.Certainly, slip lid 53 drives the mode of the movement of main shaft 51 to also have a lot, such as can arrange on main shaft 51 around its outer Monday
The annular groove in week, slip lid 53 are extend in annular groove by a pin or steel wire ring and are connected with main shaft 51, so neither affect main shaft
51 rotation, nor affects on the movement that slip lid 53 drives main shaft 51.
The edge of slip lid 53 is provided with guide rail 531, and corresponding casing 1 is provided with gathering sill 15, and slip lid 53 passes through its guide rail 531
Can slide axially relative to casing 1 in gathering sill 15.It is of course also possible to be that gathering sill is set on slip lid 53, casing 1
The upper mode for arranging guide rail causes slip lid to move.In addition, the both sides outside slip lid 53 are provided with the tread plate 537 of concave or convex,
Operator's finger blocks and can prevent from skidding when slip lid 53 is moved.
Work head storage folder 52 is rotatably supported between toothed wheel box cover plate 223 and fore shell 13, work head storage folder 52
On be evenly distributed with multiple work heads along its circumferencial direction and house storehouses 521, work head houses storehouse 521 along work head storage 52 axles of folder
To part closing, a part of excircle is opened wide, and so facilitates operator to select very hold from unlimited part during work 9
Easily see the shape of 9 head of work, so as to the work 9 for quickly selecting to need.Certainly, those skilled in the art are easy to think
Arrive, it can also be totally enclosed that work head houses storehouse 521, only need to be identified in corresponding position, or directly by work head
Storage folder 52 is made transparent, conveniently can recognize.Furthermore it is possible to work head storage folder 52 and toothed wheel box cover plate 223 it
Between carry out flexibly positioned, i.e., set in the face of the position of correspondence work 9 on the end faces of toothed wheel box cover plate 223 in work head storage folder 52
Groove is put, the steel cap compressed by spring, or shell fragment is set on toothed wheel box cover plate 223, then, work head storage folder 52 is often turned over
One work 9 can all send steel cap or shell fragment falls into the voice prompt of groove, so as to convenient operator selects work
9, and because these positions pre-set, the angles of 52 rotation of work head storage folder can be avoided wrong with main shaft 51
Open.Foregoing is by way of storing folder rotation to select different work heads, naturally it is also possible to by storing intermediate straight line
The mode of motion, the head that such as works are arranged side by side along the radial direction of storage folder, select to be accomplished by radially promoting during work head to deposit
Chu Jia.In the preferred embodiment of the present invention, storage folder is axial restraint in addition, by main shaft axially-movable drive work head
Be operated into output shaft, naturally it is also possible to be arranged to main shaft axial restraint, by store folder axial movement rotate again or
Person is moved radially in the way of selecting work head, so as to can also realize can just realizing the fast of work head without removing work head
Speed is changed.
The front end of main shaft 51 is provided with magnet 511, for adsorbing work 9, when good berth head 9 is selected, operable slip lid
53 drive main shaft 51 to house storehouse 521 through the work head for housing the work 9, and work 9 is inhaled by the magnet 511 on main shaft 51
It is attached, and work head collecting storehouse 521 is left under the promotion of main shaft 51, into output shaft 4.When work, main shaft 51 drives defeated
Shaft 4 rotates, and output shaft 4 drives work 9 to rotate.
Electric screw driver needs axially to be pressed on screw or workpiece, so work 9 when being operated
Work 9 can be subject to a reverse responsive to axial force, can produce the rear shifting of main shaft 51, and the present invention is proposed to solve this problem
Three kinds of solutions, are illustrated individually below.
With reference to shown in Fig. 4 to Fig. 7, the rear end of main shaft 51 is provided with the limit for preventing main shaft 51 from retreating where closing on fixed block 50
Position mechanism 8, position-limit mechanism 8 include pivotable limited block 81, bias the torsion spring 83 of limited block 81 along 81 pivotal orientation of limited block.
One end of wherein limited block 81 props up fixed block 50, and the other end is arranged on gear-box 22 or on casing 1 by a bearing pin 82,
The diameter parallel of bearing pin 82 can be rotated in the range of certain angle around bearing pin 82 in the axis of main shaft 51, limited block 81.Turn round
One end of spring 83 is fixed on limited block 81, and the other end is against on gear-box 22 or on casing 1, and the elastic force of torsion spring 83 makes spacing
Block 81 is maintained at the first position offseted with fixed block 50 (shown in Fig. 4 and Fig. 6).Such position-limit mechanism 8 is preferably provided two,
Axisymmetrical along main shaft 51 is distributed, and can so keep stress balance, make the axial limiting of main shaft 51 relatively reliable.Work as needs
During mobile main shaft 51, the restriction to the movement of main shaft 51 can be released by slip slip lid 53.Be provided with inside slip lid 53 with it is spacing
The solution closing piece 532 that block 81 matches, solution closing piece 532 are provided with inclined-plane 533, when slip lid 53 is moved rearwards by, inclined-plane 533 and limited block
81 side 813 contacts, and limited block 81 overcomes the elastic force of torsion spring 83 to act on around bearing pin under the drive on inclined-plane 533
82 rotations, until limited block 81 is disengaged with fixed block 50, fixed block 50 is unlocked, so as to limited block 81 is in permission 51 axle of main shaft
To the second place (shown in Fig. 7) of motion.Main shaft 51 continues axial movement, and limited block 81 is stuck in the two ends of fixed block 50, this
When can be carried out the head that more changes jobs.It can thus be seen that elder generation sliding distance S is to release before slip lid 53 drives main shaft 51 to move
Restriction of the limited block 81 to 51 axially-movable of main shaft, as long as therefore the movement that meets slip lid 53 apart from S can release limited block 81 pairs
The locking of 51 axially-movable of main shaft.After work head is more finished changing, slip lid 53 moves forward, and drives main shaft 51 and fixed block 50 also forward
Mobile, the inclined-plane 533 solved on closing piece 532 is contacted with the side 813 of limited block 81 again and is separated with the reach of slip lid 53,
Limited block 81 comes back to the position axially offseted with fixed block 50 in the presence of torsion spring 83, such electric screw driver work
When, output shaft 4 is stretched in 51 front end of main shaft, and the fixed block 50 for being located at 51 rear end of main shaft is axially propped up for limited piece 81, so main
The axially-movable of axle 51 is limited, i.e., main shaft 51 cannot be retreated, so as to the use of electric screw driver is relatively reliable.
With reference to shown in Fig. 8 and Fig. 9, it is second embodiment of position-limit mechanism 8, and unlike above-mentioned position-limit mechanism 8,
Axis of the axis of bearing pin 82a perpendicular to main shaft 51, one end of limited block 81a are pivotally connected with bearing pin 82a, and the other end is formed as
It is hook-shaped, hook on fixed block 50, such fixed block 50 also can be moved rearwards by by restriction, so as to limited block 81a is in locking master
The first position (shown in Fig. 8) of 51 axially-movable of axle.The movement of slip lid 53 makes inclined-plane 533 and limited block 81a on its solution closing piece 532
Contact, limited block 81a rotate down around bearing pin 82a and release the locking to fixed block 50 in leading for inclined-plane 533, so as to spacing
The second places of the block 81a in 51 axially-movable of main shaft is allowed (shown in Fig. 9).In present embodiment, the effect of position-limit mechanism 8a is former
Reason is identical with first embodiment, repeats no more here.
With reference to shown in Figure 10 and Figure 11, being the third embodiment of position-limit mechanism 8, position-limit mechanism 8b includes limited block
, relative to 1 axial restraint of casing, limited block 81b can be along perpendicular to the side of 51 axis of main shaft for 81b and spring 83b, limited block 81b
To linear motion, one end of spring 83b is housed in limited block 81b, and the other end is connected with casing 1 or gear-box 22, spring
83b bias limited block 81b keep it in the first position that axial direction is offseted with fixed block 50 (shown in Figure 10).In present embodiment
In, and interact to release to 50 axially-movable of fixed block by the inclined-plane 533 being arranged in slip lid 53 with limited block 81b
Locking, limited block 81b overcome the elastic force of spring 83b be linearly moved to release to main shaft 51 locking the second place (Figure 11 institutes
Show).The incline direction on inclined-plane 533 here can be selected according to the direction of limited block 81b motions, and such as limited block 81b is along vertical
Directly in the horizontal motion of 51 axis of main shaft, inclined-plane 533 is relative to the direction of 51 axis of main shaft and putting down for vertical direction formation
Face inclines；Limited block 81b is moved along the vertical direction perpendicular to 51 axis of main shaft, direction of the inclined-plane 533 relative to main-shaft axis
The planar tilt formed with horizontal direction；Limited block 81b is along the direction angled with the horizontal direction perpendicular to 51 axis of main shaft
Motion, such limited block 81b have the component in horizontally and vertically both direction, therefore the incline direction on inclined-plane 533 can have many
Individual selection, those skilled in the art can be easy to think of, and repeat no more here.
Three kinds of embodiments of above-described position-limit mechanism 8, are to move to release limited block 81 pairs by slip lid 53
The locking of 51 axially-movable of main shaft, because slip lid 53 will also drive main shaft 51 to move axially, is so accomplished by slip lid 53 and first moves
One segment distance, i.e., first release locking of the limited block 81 to 51 axially-movable of main shaft, main shaft 51 could be driven again to move axially, slip lid
The first projection 535 of the movement of main shaft 51 is driven to arrange with 50 axially spaced-apart of fixed block inside 53, axially spaced a distance can pass through
The angle of inclination on inclined-plane 533 and limited block 81 ultimate range radially superposed with fixed block 50 is determining.Certainly, art technology
Personnel are it can also be appreciated that without the need for realizing that by way of slip lid 53 is moved releasing limited block 81 axially transports to main shaft 51
Dynamic locking, such as arranges outward the knob being connected with limited block 81 in casing 1, drives limited block 81 to overcome spring by turn knob
Power rotates or mobile；Or toggle or the button being connected with limited block 81 be set in casing 1 outward, by promote toggle or
Pressing button can also drive limited block 81 to overcome spring force rotation or movement etc., can realize releasing limited block 81 pairs
The locking of 51 axially-movable of main shaft.
Furthermore it is possible to flexible member is arranged between slip lid 53 and casing 1 or gear-box 22, slip lid 53 backs to end
Can be blocked by the lock on casing 1 during position, working condition can be automatically returned under elastic force when slip lid 53 is released
Position.
When needing electric screw driver to work, main shaft 51 moves forward under the drive of slip lid 53, promotes the work for having selected
Make head into output shaft 4, when needing more to change jobs, main shaft 51 is retreated under the drive of slip lid 53, because main shaft 51 and work
The one end for making head contact is provided with magnet 511, so main shaft 51 can drive the work head that work head returns to work head storage folder 52 to receive
Hold in storehouse 521.And if moved after main shaft 51 continues, work head can be driven to house in storehouse 521 out from work head, lead to not more
Change jobs head, if operator does not have found, rotary work head is stored when pressing from both sides 52, it is more likely that cause the damage of instrument.This
It is bright to propose two kinds of solutions to solve this problem, illustrate individually below.
With reference to shown in Fig. 3 and Figure 12 to Figure 14, it is to limit the first embodiment that work head is retreated with main shaft 51.Work
Head storage folder 52 is provided with pressing plate 522 in the face of one end of gear-box 22, and pressing plate 522 can be revolved together with work head storage folder 52
Turn, pressing plate 522 can be arranged with work head storage 52 integral types of folder, can be also provided separately, and present embodiment is preferably and is provided separately,
Both processing had been facilitated, had also easily assembled.The correspondence work head of pressing plate 522 houses the position in storehouse 521 and is provided with opening 523, for through master
Axle 51, is provided with U-type groove 526 on the end face that opening 523 stores folder 52 in the face of work head, for housing U-shaped spring 56, U-shaped
It is Chong Die, the elastic deformation of the design of U-type groove 526 to U-shaped spring 56 with opening 523 that spring 56 has part in free state
It is reserved with space.Because it is 6 that currently preferred work head houses the quantity in storehouse 521,523 quantity of corresponding opening are also 6
Individual, the quantity of U-type groove 526 and U-shaped spring 56 is similarly 6, and certain those skilled in the art are it is readily conceivable that opening 523, U
Type groove 526 and U-shaped spring 56 can also only arrange one, i.e. pressing plate 522 and be fixedly installed relative to gear-box 22, such main shaft 51
Pass through every time for same opening 523, do not interfere with rotary work head storage folder 52 to select work head.When main shaft 51 is retreated
And when being moved rearwards by with work head in the presence of magnet 511, the meeting of U-shaped spring 56 elastic deformation is stuck on main shaft 51, i.e., U-shaped
First position of the spring 56 in allowing main shaft 51 to move (with reference to Figure 13).Because the end of the connection work head of main shaft 51 and work
The end of head connection main shaft 51 all has chamfering or rounding, when opening for pressing plate 522 is left in the end that main shaft 51 connects work 9
During mouth 523, U-shaped spring 56 replys free state, and the part of opening 522 is blocked, and work 9 is with during the continuation retrogressing of main shaft 51
Stopped by U-shaped spring 56, i.e., the second place of the U-shaped spring 56 in the retrogressing of work 9 is limited (with reference to Figure 14).Such main shaft 51
Separate with work 9, can arbitrarily another work 9 of rotary work head storage folder 52 to select to need.In power spiral shell
When silk knife works, in order to prevent U-shaped spring 56 from resistance is caused to the rotation of main shaft 51, can axially correspond to U on main shaft 51
Arrange at the position of type spring 56 around the main shaft annular groove of 51 1 weeks 512, so U-shaped spring 56 will not be to the rotation of main shaft 51
Turn to cause to interfere.
With reference to shown in Figure 15 to Figure 17, it is to limit second embodiment that work 9 is retreated with main shaft 51.Gear box cover
A shell fragment 57 is fixed with plate 223, shell fragment 57 is arranged between work head storage folder 52 and toothed wheel box cover plate 223, on shell fragment 57
At least one elasticated end 571 is provided with, 571 part of elasticated end is stretched in the hole on toothed wheel box cover plate 223, so by elasticity
The elastic deformation of end 571, it is also possible to which work 9 is blocked in realization, prevents main shaft 51 from driving work 9 to leave work head when retreating
Storage folder 52.With reference to Figure 16, first position of the elasticated end 571 in allowing main shaft 51 to move；With reference to Figure 17, elasticated end
571 second places in the retrogressing of work 9 is limited.According to present embodiment, those skilled in the art are it is readily conceivable that can be with
Directly elasticated end 571 is stuck on toothed wheel box cover plate 223, or rigid stator is set, stator can be by elasticity work
Hole on partial occlusion toothed wheel box cover plate 223 and leave on toothed wheel box cover plate 223 hole Liang Ge positions between move.
Generally, the axially disposed interior hexagonal hole of output shaft 4, so that the work 9 for driving six sides rotates.But such as
When fruit work 9 enters output shaft 4 under the drive of main shaft 51, if six side's external forms of work 9 and hexagonal hole in output shaft 4
Angle staggers, and can bring very big inconvenience to operator.In order to prevent the generation of such case, knot of the present invention to output shaft 4
Structure is improved, and with reference to shown in Figure 18 to Figure 19, is the first embodiment of output shaft 4, and output shaft 4 is axially disposed to be led to
Be provided with hole 41, through hole 41 for the moment of torsion of output shaft 4 is passed to work 9 torque transfer part and drive work head with
The correction unit that torque transfer part matches, torque transfer part is at least one radial protrusion 42 being arranged in through hole 41, radial convex
Rise 42 can with one of face of the work 9 of six sides against and limit work 9 and rotate relative to output shaft 4.Correction unit
To be arranged at the inclined-plane 421 for closing on 3 one end of transmission mechanism in through hole 41, can be on inclined-plane when work 9 is contacted with inclined-plane 421
Drive output shaft 4 or work 9 to rotate so that through hole 41 to match with work 9 under 421 guiding, that is to say, that inclined-plane
421 serve work 9 into correction work 9 during through hole 41 relatively radially raised 42 position, that is, work 9 and an output shaft
4 rotate against, and so as to prevent the corner angle of work 9 from being blocked by radial protrusion 42,9 can smoothly enter through hole 41 to work
It is interior.Currently preferred inclined-plane 421 is circumferentially inclined, the channeling direction that so work 9 and output shaft 4 are rotated against
Definitely.In the present embodiment, radial protrusion 42 arranges 12, is circumferentially uniformly distributed, so as to output shaft 4
Normal section is formed as the dodecagon that each projection is for 150 degree, and dodecagon here is by between two hexagon circumferencial directions
It is formed by stacking every 30 degree.When main shaft 51 push the work forward 9 enter output shaft 4 when, if six sides of work 9 and the ten of output shaft
Two jiaos are staggered, and 9 six angles of working like that can be against on inclined-plane 421,9 axial movement of work, on inclined-plane 421 circumferentially
Under the inclined guiding in direction, the through hole 41 at angle and output shaft 4 that work 9 or output shaft 4 are rotated up work 9 matches,
9 output shaft 4 is smoothly entered so as to work.In addition, radial protrusion 42 and inclined-plane 421 can link together, radial protrusion
42 is axially extending along output shaft 4, and so bigger with the contact area of work 9, the effect of transmitting torque is more preferable.Certainly, radially
Projection 42 and inclined-plane 421 can also be provided separately, mode that axially disconnection or circumferencial direction stagger etc..
With reference to shown in Figure 20 to Figure 21, it is second embodiment of output shaft 4, the radial protrusion 42 in through hole 41 only sets
One is put, is dodecagonal one of angle, one end of same radial protrusion 42 arranges inclined-plane 421, and inclined-plane 421 is along circle
Circumferential direction is inclined, likewise, output shaft 4 can just drive work 9 to rotate by a radial protrusion 42, and by one tiltedly
The guiding in face 421 can also realize work 9 or the rotation of output shaft 4 so that work 9 smoothly enters output shaft 4.But,
Work head houses and gap presence is always had between storehouse 521 and work 9, and main shaft 51 drives work 9 to enter output shaft 4 every time
Before, can there is deviation in work 9 axis and the axis of main shaft 51, so working 9 can be in radial motion in output shaft 4
Space with regard to very little, in order to make work 9 have bigger motion empty relative to output shaft 4 when work 9 is into output shaft 4
Between, guide part can be further set in through hole 41, guide part is to be arranged in through hole 41 to close on work head storage folder 52
The interior step 43 of one end, the internal diameter of interior step 43 pass through inclined-plane mistake more than the internal diameter of through hole 41 between interior step 43 and through hole 41
Cross, the height vertically of interior step 43 is substantially equal to the height vertically of inclined-plane 421, so output shaft 4 is had just enter in work 9
When, work 9 has the space of bigger rotation or axially-movable relative to output shaft 4, more suitable hence into output shaft 4
Profit.
With reference to shown in Figure 22 and Figure 23, it is the third embodiment of output shaft 4, in order to prevent work 9 from entering output
It is just tip of the point of 9 peripheral six side of work just to radial protrusion 42 during axle 4, can be in 4 through hole of output shaft, 41 interior and footpath
To the deep gouge 45 that the raised 42 position settings relative at center are communicated with interior step 43, center is relative to be referred herein to and radial direction
The raised 42 centrosymmetric point in tip is located between two sides 413 of deep gouge 45, and deep gouge 45 is with being connected with through hole 41
Bottom surface 411 and two sides 412, angled transition between bottom surface 411 and through hole 41 are easily directed to work 9 in through hole 41,
Two sides 412 circumferentially incline, so when work 9 enters output shaft 4 and the point of 9 peripheral six side that work is just right
During the tip of radial protrusion 42, work 9 radial motion are to deep gouge 45, and are rotated down in leading for side 412, while in bottom surface
411 lead is downwardly into through hole 41.So ensure that work 9 can smoothly enter output in any angle
Axle 4.
The above-described radial protrusion 42 for output shaft 4 contacts the mode for driving the rotation of work 9 with work 6 face,
So work 9 uniform force, and unit area stress is little.Certainly, the radial protrusion 42 of output shaft 4 and work 9 linear contact lay
Work 9 can be driven to rotate, such as：The angle of radial protrusion 42 is not limited, as long as which can drive work 9 to rotate, its one end
Inclined-plane 421 along the circumferential direction incline, can also so realize that work 9 smoothly enters output shaft 4.
Hereinafter a present invention work quick-replaceable process will be elaborated
With reference to shown in Fig. 1, electric screw driver is in running order, and now depression of push button switch 7 can carry out twisting screw
Work.When needing to change a further type of work 9, operate slip lid 53 to move to the direction of motor, coordinate reference picture
Shown in 5, Fig. 8 and Figure 13, the inclined-plane 533 on slip lid 53 is contacted with a side 813 on limited block 81, with the shifting of slip lid 53
Dynamic, limited block 81 is pivoted to the position shown in Fig. 9 in the presence of inclined-plane 533, and now limited block 81 is relieved to fixation
The locking of 50 axially-movable of block, while slip lid 53 also moves to the position that the first projection 535 is contacted with fixed block 50；Next after
Continue the direction movement slip lid 53 to motor, slip lid 53 drives main shaft 51 mobile in the same direction therewith by fixed block 50, main shaft 51
On annular groove 512 cross U-shaped spring 56, six side parts on main shaft 51 are contacted with U-shaped spring 56 and with main shaft 51
Move afterwards and force 56 elastic deformation of U-shaped spring, until main shaft 51 is moved to and departed from U-shaped spring 56, U-shaped spring 56 returns back to freedom
State (as shown in figure 14), slip lid 53 continue to drive main shaft 51 to be moved to extreme position, and work 9 cannot cross U-shaped bullet
Spring 56 houses storehouse 521 by the work head being arranged on work head storage folder 52 so as to stay in work head storage folder 52, now
Open section find need change work 9, rotary work head storage folder 52, by required work 9 go to it is defeated
The axially opposing position of shaft 4, i.e., position as shown in Figure 2.
Next, with continued reference to Fig. 2, resetting to the direction movement slip lid 53 of output shaft 4, slip lid 53 passes through the second projection
536 are against drive main shaft 51 on fixed block 50 moves to the direction of output shaft 4, and main shaft 51 is provided with one end of magnet 511 and selects
9 afterbody of work selected contacts and adsorbs the work 9, and slip lid 53 drives main shaft 51 to move to the direction of output shaft 4, coordinates ginseng
According to Figure 20, when work 9 enters output shaft 4, under the guiding on inclined-plane 421, work 9 smoothly enters output shaft 4, and main shaft
51 continue to move to slip lid 53, until work 9 is exposed from the front end of output shaft 4, slip lid 53 is returned to and is abutted with fore shell 13
Position, now, the inclined-plane 533 on slip lid 53 is departed from limited block 81, and limited block 81 is returned under elastic reaction and fixation
The position that block 50 axially offsets, such electric screw driver have been returned to the working condition shown in Fig. 1.The mistake that whole work head is changed
Journey is simple to operate, quickly, for the user, can greatly improve operating efficiency.
The above-mentioned definition to each element is not limited in the various concrete structures mentioned in embodiment or shape, this area
Those of ordinary skill which can be carried out simply know replace.Such as motor can substitute electricity with gasoline engine or diesel engine etc.
Machine；Work head can be the polygon that section is arbitrary rule；Additionally, in above-mentioned embodiment, main shaft is stored with work head
Moving to axial between folder can also be that main shaft is fixed, and work head storage folder can either axially-movable can also rotate,
And main shaft can also be coaxially disposed etc. with motor shaft.In addition, position-limit mechanism is mainly used in limiting main shaft axially-movable, to which
Structure simultaneously has no special requirements, and the interior of visual difference casings can increase new element accordingly changing configuration, it is also possible to
Reduce unnecessary element.
Claims (16)
1. a kind of power tool, including：
Casing；
Motor, is arranged in casing, for providing rotary power；
Main shaft, for driving one of several work heads to rotate；
Transmission mechanism, is arranged between motor and main shaft and the rotary power that motor is exported can be passed to main shaft；
Storage folder, including for housing the collecting storehouse of several work heads, the main shaft can axially-movable, so as in through
House the mode of operation and release mode detached with storehouse is housed in storehouse；
Characterized in that, the power tool also includes the position-limit mechanism being arranged between casing and main shaft, the position-limit mechanism
Exercisable restriction allows the main direction axially away from work head to move.
2. power tool as claimed in claim 1, it is characterised in that：The position-limit mechanism is included operationally two positions
Between the locating part that moves, in first position, the locating part limits the main direction motion axially away from work head；In second
Put, the locating part allows the main direction axially away from work head to move.
3. power tool as claimed in claim 2, it is characterised in that：The power tool also includes that be arranged on casing can
The operating parts of axial movement, the operating parts drive the main shaft axially-movable.
4. power tool as claimed in claim 3, it is characterised in that：The operating parts can relatively described main axle moving.
5. power tool as claimed in claim 4, it is characterised in that：The operating parts have spaced first projection and
Second projection, the main shaft are provided with fixed block, and the fixed block is relative to main shaft axial restraint, first projection or second
When projection is abutted with fixed block, the operating parts and main shaft are synchronized with the movement, and the fixed block is convex positioned at first projection and second
When between block, the operating parts and the main shaft relative motion.
6. power tool as claimed in claim 3, it is characterised in that：The operating parts drives locating part to be moved by first position
To the second place, and in the second place, the operating parts can drive the main shaft axially-movable.
7. power tool as claimed in claim 3, it is characterised in that：The operating parts is provided with the unblock offseted with locating part
Portion, the operating parts drive locating part to move to the second place by first position by the solution lock section.
8. power tool as claimed in claim 3, it is characterised in that：The storage folder is including the be housed in the casing
A part and the Part II for being covered and being exposed as operating parts is moved by the operating parts.
9. power tool as claimed in claim 3, it is characterised in that：The operating parts and casing alternative one are provided with guiding
Groove, another of both the operating parts and casing are provided with the guide rail matched with gathering sill, and the operating parts is by described
Guide rail is moved in gathering sill and relative to casing axially-movable.
10. power tool as claimed in claim 2, it is characterised in that：The locating part is around parallel or perpendicular to main shaft
Axial pivots.
11. power tools as claimed in claim 2, it is characterised in that：The locating part is along the side perpendicular to main shaft axial direction
To linear motion.
12. power tools as claimed in claim 1, it is characterised in that：The power tool is also included for connecting work head
Output shaft, the transmission mechanism delivers torque to output shaft by the main shaft, so as to the output shaft driving work head
Rotation.
13. power tools as claimed in claim 2, it is characterised in that：The position-limit mechanism also includes flexible member, the bullet
Property element provide locating part by second site reversion to first position elastic force.
A kind of 14. methods of operating of power tool, the power tool as claimed in claim 1, the method for operating include with
Lower step：1) position-limit mechanism is operated to release restriction of the position-limit mechanism to main shaft axially-movable；2) mobile main shaft is in release mould
Formula；3) operation storage folder, selects the work head for needing；4) mobile main shaft recovers to mode of operation.
15. methods of operating as claimed in claim 14, it is characterised in that：The power tool also includes being arranged at energy on casing
The operating parts of enough axial movements, the operating parts drive the main shaft axially-movable, and the operating parts can relatively described main shaft shifting
Dynamic, the method for operating also includes：Restriction of the position-limit mechanism to main shaft axially-movable is released by moving axially operating parts, is continued
Moving operation part simultaneously drives main shaft to be in release mode.
16. methods of operating as claimed in claim 14, it is characterised in that：The mode of the operation storage folder is rotation storage
Folder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510923437.7A CN105437128B (en) | 2011-08-06 | 2011-08-06 | Power tool and the method for operating for the power tool |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110224257.1A CN102909698B (en) | 2011-08-06 | 2011-08-06 | Power tool and the method for operating for this power tool |
| CN201510923437.7A CN105437128B (en) | 2011-08-06 | 2011-08-06 | Power tool and the method for operating for the power tool |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110224257.1A Division CN102909698B (en) | 2011-08-06 | 2011-08-06 | Power tool and the method for operating for this power tool |
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| Publication Number | Publication Date |
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| CN105437128A CN105437128A (en) | 2016-03-30 |
| CN105437128B true CN105437128B (en) | 2017-04-05 |
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| CN201510923436.2A Active CN105437168B (en) | 2011-08-06 | 2011-08-06 | Power tool |
| CN201510924500.9A Active CN105437169B (en) | 2011-08-06 | 2011-08-06 | Power tool |
| CN201110224257.1A Active CN102909698B (en) | 2011-08-06 | 2011-08-06 | Power tool and the method for operating for this power tool |
| CN201510923437.7A Active CN105437128B (en) | 2011-08-06 | 2011-08-06 | Power tool and the method for operating for the power tool |
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| CN201510924500.9A Active CN105437169B (en) | 2011-08-06 | 2011-08-06 | Power tool |
| CN201110224257.1A Active CN102909698B (en) | 2011-08-06 | 2011-08-06 | Power tool and the method for operating for this power tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105437168B (en) * | 2011-08-06 | 2018-07-06 | 苏州宝时得电动工具有限公司 | Power tool |
| CN107283368B (en) * | 2016-04-01 | 2021-09-07 | 苏州宝时得电动工具有限公司 | Hand-held tool and method for operating same |
| CN107962522B (en) * | 2017-12-27 | 2024-02-09 | 宁波浙达技术服务有限公司 | Electric screw gun capable of automatically replacing gun head |
| CN109818285A (en) * | 2019-01-30 | 2019-05-28 | 国网浙江杭州市富阳区供电有限公司 | A kind of electrically operated device for handcart switch cabinet |
| CN110082113A (en) * | 2019-04-03 | 2019-08-02 | 陕西渭阳动力技术服务有限责任公司 | A kind of monitoring method remanufacturing diesel engine |
| CN111590524A (en) * | 2020-06-11 | 2020-08-28 | 浙江德硕电器有限公司 | Head and body quick-change structure of multifunctional power tool and multifunctional power tool |
| CN112207548B (en) * | 2020-10-01 | 2022-08-26 | 建德市远丰工具有限公司 | Screwdriver capable of automatically replacing screwdriver bit |
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| US5065498A (en) * | 1990-04-05 | 1991-11-19 | Mckenzie Archibald M | Multiple bit power drill |
| CN101563192A (en) * | 2006-12-18 | 2009-10-21 | 罗伯特·博世有限公司 | Motor-driven machine tool |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105437169A (en) | 2016-03-30 |
| CN105437169B (en) | 2019-06-04 |
| CN105437168A (en) | 2016-03-30 |
| CN102909698A (en) | 2013-02-06 |
| CN105437168B (en) | 2018-07-06 |
| CN102909698B (en) | 2016-03-30 |
| CN105437128A (en) | 2016-03-30 |
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