CN207027414U

CN207027414U - Multi-functional drill

Info

Publication number: CN207027414U
Application number: CN201720767427.3U
Authority: CN
Inventors: 张士松; 郑悦; 谢明健
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2017-06-28
Filing date: 2017-06-28
Publication date: 2018-02-23
Anticipated expiration: 2027-06-28

Abstract

A kind of multi-functional drill is the utility model is related to, including：Housing；Motor；Working shaft；Rotated to make working shaft produce batch (-type), including the revolving part being set on working shaft, the piston piece that is stored with the closing space of hydraulic oil in addition to can be assembled in radial motion in the closing space in the guide groove of the working shaft is provided with revolving part, the closing space includes that the high-pressure chamber of high oil pressure can be produced, and the high-pressure chamber is formed between the working shaft and the piston；Changeover module, including clutch part and the operating parts for driving the clutch part.Wherein clutch part selectively connects working shaft and the revolving part in impact unit, can complete the conversion of the impact wrench pattern of working shaft and the continuous mode of working shaft, can reduce the vibrations under impact wrench pattern using oil shock unit.

Description

Multi-functional drill

Technical field

Electric tool is the utility model is related to, more particularly to a kind of multi-functional drill.

Background technology

It is purely mechanic impact that traditional three functions, which are bored, and noise, vibration be greatly under impact wrench pattern.

Utility model content

Based on this, it is necessary to provide a kind of multi-functional drill, there is the advantages of with small vibration.

A kind of multi-functional drill, including：

Housing；

Motor, to produce power；

Working shaft, to drive work head；

Oil shock unit, rotated to make working shaft produce batch (-type), including the revolving part being set on working shaft, rotation Turn to be provided with part and be stored with the closing space of hydraulic oil in addition to can be assembled in radial motion in the closing space described Piston piece in the guide groove of working shaft, the closing space include that the high-pressure chamber of high oil pressure, the high pressure chest can be produced Room is formed between the working shaft and the piston；

Changeover module, including clutch part, wherein the clutch part can be changed between the first location and the second location, institute Clutch part is stated at the first position, the clutch part connects the working shaft and revolving part, the band when revolving part rotates Dynamic working shaft continuously rotates together；The clutch part is at the second place, the clutch part and the working shaft and rotation At least one disengagement in part, when the revolving part rotates, revolving part can intermittently promote piston piece radial motion and pass through Piston piece interval Ground shock waves working shaft in a circumferential direction.

Above-mentioned multi-functional drill, impact wrench function is realized using oil shock unit, when hydraulic oil can reduce impact Vibration, clutch part selectively connect working shaft and the revolving part in impact unit, can complete the impact wrench mould of working shaft The conversion of the continuous mode of formula and working shaft, realize the purpose of multi-functional drill gun with small vibration.

In one of the embodiments, the changeover module also includes the operating parts for driving the clutch part, the clutch For part at first position, the operating parts can be by the output torque of operatively controlled motor.

In one of the embodiments, the changeover module also includes the operating parts for driving the clutch part, the clutch For part at the second place, the operating parts can operatively be controlled the output speed of the motor.

In one of the embodiments, the operating parts can rotatably be operated around the axis of the working shaft.

In one of the embodiments, the changeover module also includes the operating parts for driving the clutch part, the operation Part includes the first operating parts and the second operating parts, wherein first operating parts is driving clutch part in first position and second Changed between position, second operating parts is used for the output torque and rotating speed for controlling the motor.

In one of the embodiments, the motor shaft of the motor passes through revolving part described in primary gear speed reducing system drive Rotate.

In one of the embodiments, the one end of the working shaft is provided with axial hole, and the other end is used to drive the work Make head, the axial hole is built-in with the camshaft for following the revolving part to rotate together, also set on the outer surface of the working shaft The radial passage for accommodating the piston piece is equipped with, is connected between the radial passage and the axial hole by radial hole, it is described Radial passage also accommodate can clogging radial hole ball, the revolving part is internally provided with to force the piston piece edge Radially towards the pushing portion of the camshaft motion；

When the pushing portion does not abut radially with the piston piece, the axial hole connects with closing space, closing space Interior hydraulic oil can enter the axial hole；

The pushing portion diametrically abuts residence when stating piston piece, and it is empty with closing that the camshaft completely cuts off the axial hole Between, and the ball blocks the radial hole, the hydraulic oil makes piston piece keep diametrically abutting shape with the pushing portion State；

The pushing portion is not from the piston piece is abutted radially to during abutting the piston piece, the piston piece The working shaft is along the circumferential direction impacted while radial motion.

In one of the embodiments, the pushing portion has climbing face and bearing surface, has at the top of the piston piece Cross face and contact surface, in the pushing portion rotation process, climbing face advance along transition face and force piston piece radial motion until Bearing surface diametrically abuts with contact surface.

In one of the embodiments, the changeover module also includes the operating parts for driving the clutch part, the operation Part is moved to drive the clutch part along the axially direction parallel to the working shaft.

In one of the embodiments, the changeover module also includes the operating parts for driving the clutch part, the operation Part includes the switching ring that can be rotated, and the switching ring is provided with the first driver slot, and the clutch part is connected with and the first driving The sliding pin that groove coordinates, described switch in ring rotation process can be axially moved clutch part by sliding pin.

Brief description of the drawings

Fig. 1 is the schematic diagram of the multi-functional drill of the embodiment of the utility model one；

Fig. 2 is the top view of multi-functional drill shown in Fig. 1；

Fig. 3 is the schematic sectional view of multi-functional drill shown in Fig. 1, wherein the multi-functional drill is in impact wrench pattern；

Fig. 4 is the schematic sectional view of multi-functional drill shown in Fig. 1, wherein the multi-functional drill is in drill jig formula；

Fig. 5 is the assembling figure of operation knob, mode switch element and impact unit；

Fig. 6 is the explosive view of the assembly shown in Fig. 5；

The schematic sectional view that Fig. 7 is impact unit and working shaft fits together；

Fig. 8-Figure 11 be impact unit A-A shown in Fig. 7 to schematic sectional view, illustrate impact unit revolving part rotate During camshaft diverse location when state；

Figure 12-Figure 15 is another schematic sectional view of impact unit shown in Fig. 7, and the revolving part for illustrating impact unit rotates During camshaft diverse location when state；

The schematic sectional view that Figure 16 is the impact unit of another embodiment and working shaft fits together；

Figure 17 be Figure 16 impact unit the course of work C-C to schematic cross-sectional view；

Figure 18 is the schematic diagram of impact unit a states in Figure 17；

Figure 19 is the schematic cross-sectional view of the multi-functional drill of another embodiment；

Figure 20 is the side view of the multi-functional drill shown in Figure 19；

When Figure 21 multi-functional drills are in impact wrench pattern along the D-D in Figure 20 to schematic cross-sectional view；

When Figure 22 multi-functional drills are in impact wrench pattern along the E-E in Figure 20 to schematic cross-sectional view；

When Figure 23 multi-functional drills are in screwdriver or drill jig formula along the D-D in Figure 20 to schematic cross-sectional view；

When Figure 24 multi-functional drills are in screwdriver or drill jig formula along the E-E in Figure 20 to schematic cross-sectional view；

When Figure 25 multi-functional drills are in impact drill pattern along the D-D in Figure 20 to schematic cross-sectional view；

When Figure 26 multi-functional drills are in impact drill pattern along the E-E in Figure 20 to schematic cross-sectional view；

Figure 27 is the explosive view locally assembled of multi-functional drill；

Figure 28 is the structural representation of operating parts and ring switch；

Figure 29 is that the clutch part of multi-functional drill of another embodiment and the clutch position of working shaft are located on the right side of impact unit When schematic diagram, multi-functional drill is in impact wrench pattern；

Figure 30 is that the clutch part of multi-functional drill of another embodiment and the clutch position of working shaft are located on the right side of impact unit When schematic diagram, multi-functional drill is in continuous mode；

Figure 31 is the schematic diagram of the first operation interface of the multi-functional drill of another embodiment；

Figure 32 to 35 is the schematic diagram of the first state of the operation interface incision ring change under difference in functionality pattern；

Figure 36 is the schematic diagram of second of operation interface of the multi-functional drill of another embodiment；

Figure 37 to 40 is the schematic diagram of state of second of operation interface incision ring change under difference in functionality pattern；

Figure 41 is the schematic diagram of second of operation interface of the multi-functional drill of another embodiment；

Figure 42 to 45 is the schematic diagram of the third state of operation interface incision ring change under difference in functionality pattern；

Figure 46 is the schematic diagram of the 4th kind of operation interface of the multi-functional drill of another embodiment；

Figure 47 to 50 is the schematic diagram of the 4th kind of state of the operation interface incision ring change under difference in functionality pattern；

Figure 51 is the schematic diagram of second of operation interface of the multi-functional drill of the embodiment shown in Fig. 1；

Figure 52 is the schematic diagram of the third operation interface of the multi-functional drill of the embodiment shown in Fig. 1；

Figure 53 is the schematic diagram of the third operation interface of the multi-functional drill of the embodiment shown in Fig. 1.

Related elements reference numeral in figure is as follows：

100th, multi-functional drill 110, housing 112, Part I

1122nd, handle portion 113, Part II 114, support member

115th, bearing 116, action pane 117, gear instruction unit

120th, motor 122, reducing gear 130, working shaft

131st, axial hole 132, interface channel 133, guide groove

134th, radial hole 140, impact unit 142, revolving part

1421st, pushing portion 1422, climbing face 1423, bearing surface

143rd, closing space 144, hydraulic oil 145, camshaft

146th, piston piece 1461, transition face 1462, contact surface

147th, ball 150, counterpart 160, changeover module

161st, clutch part 162, operating parts 163, switching ring

164th, operating knob 1642, the first operating parts 1644, the second operating parts

165th, the first driver slot 1651, first paragraph 1652, second segment

170th, battery bag 180, pull bar 182, sliding pin

192nd, variable element 230, working shaft 232, radial part

233rd, radial direction through hole 240, impact unit 242, revolving part

2422nd, sealing 243, closing space 244, hydraulic oil

246th, piston piece 247, elastic component 300, multi-functional drill

310th, housing 320, motor 322, reducing gear

330th, working shaft 340, impact unit 342, revolving part

350th, changeover module 351, the first clutch part 352, operating parts

353rd, ring 354, operating knob 3542, shell fragment are switched

3543rd, the first operating parts 3544, the second operating parts 355, the first driver slot

3551st, first paragraph 3552, second segment 356, the second driver slot

361st, moved end tooth 362, static side tooth 363, the second clutch part

364th, flexible positioning piece 370, the first pull bar 372, sliding pin

380th, the second pull bar 382, backing pin 390, ring switch

Embodiment

For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings State.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can come in many different forms Realize, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to of the present utility model The understanding of disclosure more thorough and comprehensive.

It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or it may be simultaneously present centering elements.On the contrary, when element be referred to as " directly existing " another element " on " when, Intermediary element is then not present.Term as used herein " vertically ", " horizontal ", "left", "right" and similar statement are only It is for illustrative purposes.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include The arbitrary and all combination of one or more related Listed Items.

Below in conjunction with the accompanying drawings, the better embodiment of multi-functional drill is described in detail.

Refer to Fig. 1 to Fig. 4, multi-functional drill 100 include housing 110, motor 120, working shaft 130, impact unit 140, Control circuit, counterpart 150, changeover module 160, wherein motor 120 are to export power, and impact unit 140 is making work Axle 130 produces ballistic motion (i.e. intermittent rotation or the rotation of pulsed) in a circumferential direction, and changeover module 160 can drive Dynamic counterpart 150 optionally coordinates with impact unit 140, so allow multi-functional drill 100 in impact wrench pattern and Switch between continuous mode (i.e. continuous to rotate).Under continuous mode, working shaft only continuously rotates, and does not produce batch (-type) rotation.

In one embodiment, join Fig. 3 and Fig. 4, housing 110 is used for the other elements for accommodating and positioning multi-functional drill 100, is The support framework of multi-functional drill 100.Housing 110 includes Part I 112, to install motor 120, and battery is coupled Bag 170.As shown in figure 1, the Part I 112, which also has, forms proficiency shank 1122 for gripping, battery bag 170 is arranged on handle The end in portion 1122.Motor 120, handle portion 1122, the under type of battery bag more than 170 are set, and can reduce the size in transverse direction, Meet human body operating habit simultaneously.Part I 112 is Hafu-type, is spliced by left and right two halves.Housing 110 also includes second Part 113, positioned at the side of Part I 112, its one end is embedded in the Part I 112, and working shaft 130 is then from second The other end of part 113 is stretched out work head is coupled.In Fig. 3, housing 110 is actually spliced by three parts.Certainly, Part II 113 can also be spliced by two halves formula, and further, the two halves of Part II 113 can be respectively with first The two halves of part 112 are structure as a whole, i.e., now, whole housing 110 is exactly that left and right two halves are spliced.

Motor 120 is placed in Part I 112, the axial direction of motor 120 and the row of Part I 112 and Part II 113 Column direction is consistent, also axially consistent with working shaft 130.Motor 120 can use dc motor, by foregoing battery bag 170 Power supply.

Join Fig. 3, Fig. 4 and Fig. 7 to Figure 15, impact unit 140 is oil shock unit in the form of piston, including by motor 120 By the revolving part 142 of the driving rotation of reducing gear 122, it is enclosed on the outside of the one end of working shaft 130, with working shaft 130 Closing space 143 is formed between end, and hydraulic oil 144 is sealed with the closing space 143.

The end that working shaft 130 stretches into revolving part 142 is provided with axial hole 131.Revolving part 142 is internally connected with camshaft 145.Camshaft 145, which is stretched into axial hole 131 and in axial hole 131, has rotation space, and camshaft 145 is to follow revolving part 142 rotate together.The interface channel 132 of axial hole 131 and closing space 143 is communicated with the outer surface of working shaft 130.It is convex In the rotary course of wheel shaft 145, axial hole 131 and the position of closing space 143 can be completely cut off by having；Also having allows axial hole 131 positions being connected with closing space 143, now hydraulic oil 144 can be circulated.

Guide groove 133 is additionally provided with the outer surface of working shaft 130, the guide groove 133 in a circumferential direction with interface channel 132 stagger.Guide groove 133 is at least symmetrical arranged at two in the axis both sides of working shaft 130.Guide groove 133 is along working shaft 130 Radially extend, connected between axial hole 131 by radial hole 134.

Piston piece 146 and ball 147 are accommodated in guide groove 133.Piston piece 146 can be in guide groove 133 along work The radial motion of axle 130.Being dimensioned to for ball 147 is clogging by radial hole 134, to completely cut off guide groove 133 and axle To hole 131.

Being internally provided with for revolving part 142 is multiple forcing piston piece 146 to be pushed radially towards what camshaft 142 moved Portion 1421.When revolving part 142 rotates, pushing portion 1421, camshaft 145 rotate, pushing portion 1421, the phase of camshaft 145 It is arranged to stagger 90 degree.

As shown in figs. 8 and 12, wherein, camshaft 145 allow axial hole 131 be connected with closing space 143 when, it is convex Wheel shaft 145 is horizontal, and pushing portion 1421 is located at the top of camshaft 145, does not abut piston piece 146.When pushing portion 1421 Rotate 90 degree move to diametrically with piston piece 146 holding abut state when, camshaft 145 is vertical by level conversion, and Interface channel 132 is blocked to completely cut off axial hole 131 and closing space 143, as shown in Figure 11 and Figure 15.

Pushing portion 1421 has climbing face 1422 and bearing surface 1423, and the top of piston piece 146 includes transition face 1461 and connect In contacting surface 1462, the wherein rotation process of pushing portion 1421, climbing face 1422 is successfully climbed along transition face 1461 advances and forces The radial motion of piston piece 146 diametrically abuts until bearing surface 1423 with contact surface 1462.Climbing face 1422 and transition face 1461 are disposed as inclined-plane, are easy to climb.

Join Fig. 9 to Figure 10, Figure 13 to 14, revolving part 142 rotates along the direction of arrow in the figure, and pushing portion 1421 is along piston During the top of part 146 is climbed, the axle 130 that pushes the work forward simultaneously of piston piece 146 rotates, and hydraulic oil 144 starts from interface channel 132 Into in axial hole 131.When pushing portion 1421 diametrically abuts piston piece 146, ball 147 blocks radial hole 134, convex The oily confined space of high pressure is formed in axial hole 131 around wheel shaft 145, under oil pressure effect, piston piece 146 is maintained at and pushed The position that portion 1421 abuts against.Pushing portion 1421 is rotated further, during pushing portion 1421 and piston piece 146 are out of gear mesh, liquid Force feed 144 starts to enter in axial hole 131 from interface channel 132, while the axle 130 that pushes the work forward rotates, and piston piece 146 is in oil pressure Axial hole 131 is radially away under effect to be abutted against again with next pushing portion 1421.So repeatedly, impact unit 140 pairs of working shafts 130 persistently produce impact torque.

Join Fig. 3 and Fig. 4, counterpart 150 is additionally provided with housing 110.Counterpart 150 is installed on working shaft 130 and can Working shaft 130 is driven to rotate together.Multi-functional drill 100 also includes changeover module 160, selectively connects counterpart 150 and rotation Turn part 142.When changeover module 160 is not connected to counterpart 150 with revolving part 142, the rotation of revolving part 142 is to counterpart 150 Do not work, the revolving part 142 of impact unit 140 can rotate relative to working shaft 130, and impact unit 140 can be to working shaft 130 persistently produce impact torque, into impact wrench pattern, perform the function of impact wrench.It is coupled when changeover module 160 connects When part 150 is with revolving part 142, revolving part 142 will drive working shaft 130 to rotate together when rotating by counterpart 150, equivalent to By revolving part 142 it is locked with working shaft 130 together with, therefore impact unit 140 will not impact working shaft 130, now working shaft 140 will continuously rotate, and multi-functional drill 100 enters continuous mode.

Join Fig. 2 and Fig. 3, when needing to switch between impact wrench pattern and continuous mode, it is only necessary to make changeover module 160 are connecting the state of counterpart 150 and revolving part 142 and are being not connected to switch between the state of counterpart 150 and revolving part 142 , switch very convenient.

In one of the embodiments, changeover module 160 includes clutch part 161 and drives the operating parts of clutch part 161 162.Clutch part 161 can be changed in the axial direction of working shaft 130 between a first position and a second place.Its In, join Fig. 3, clutch part 161 is in its first position in the axial direction of working shaft 130, now, clutch part 161 while and revolving part 142 and counterpart 150 matching relationship be present, revolving part 142 is connected by clutch part 161 with counterpart 150 makes the two realize moment of torsion Transmit, multi-functional drill 100 is in continuous mode.

When needing to switch to impact wrench pattern from continuous mode, it is only necessary to operate foregoing operating parts 162, make clutch Part 161 is separated after moving axially with counterpart 150, i.e., clutch part 161 is only connected with revolving part 142, but de- with counterpart 150 Open, join Fig. 4, revolving part 142 can not transmit torque to counterpart 150.Multi-functional drill 100 will enter impact wrench pattern.

In multi-functional drill 100 shown in Fig. 3 and Fig. 4, clutch part 161 for can clutch gear in axial sliding, it is set To be always maintained at mating relation with the outer ring of revolving part 142, mating relation is selectively kept with counterpart 150, naturally it is also possible to It is just opposite.

Clutch part 161 can be connected or axially slid relative by spline with counterpart 150.Clutch part 161 and revolving part 142 Between also can by spline realize connection or axially slide relative.

In one embodiment, counterpart 150 and working shaft 130 are two-piece types, and the two is fitted together.In another implementation In example, counterpart 150 and working shaft 130 are integral type, and now counterpart 150 is considered as a part for working shaft 130.

In one embodiment, as shown in Figure 3 and Figure 4, clutch part 161 is in the front of impact unit 140 and working shaft 130 Optionally combine, i.e. separate or merge.Front herein refers to：In the axial direction of working shaft 130, clutch part 161 and working shaft 130 Clutch position be located at the left side of revolving part 142, i.e. side of the impact unit 140 away from motor 120, more leaned on compared with impact unit 140 Nearly working shaft 130 stretches out one end (in Fig. 4 the left end of working shaft 130, to drive one end of work head) of housing 110.Clutch Position is clutch part 161 with working shaft 130 from the position for being engaged to disengagement.

Further, the clutch position of clutch part 161 and working shaft 130 is located at the one of revolving part 142 and working shaft 130 Between end.Because revolving part 142 is enclosed on the outside of the other end (right-hand member of working shaft 130 in Fig. 4) of working shaft 130, and and work Make to form closing space 143 between the end of axle 130.The clutch position of clutch part 161 and working shaft 130 is located at revolving part 142 When between the other end of working shaft 130, when considering the sealing between revolving part 142 and working shaft 130, it is only necessary to consider Sealing of the revolving part 142 between the side of clutch part 161 and working shaft 130, i.e. in Fig. 4, it is only necessary to consider that revolving part 142 is left Sealing between side and working shaft 130, it is possible thereby to simplify the design of encapsulation scheme.

In another embodiment, the clutch position of clutch part 161 and working shaft 130 can also be provided in revolving part 142 right side, that is, impact unit 140 is arranged on close to the side of motor 120.Now, the right-hand member of working shaft 130 stretches out revolving part 142, sealed between the left and right sides of revolving part 142 and working shaft 130, clutch part 161 equally may be used when moving To realize the function switch of multi-functional drill 100.Join Fig. 2 to Fig. 6 in the lump, operating parts 162 includes switching ring 163 and operating knob 164. Operating knob 164 is assembled in the outside of switching ring 163, to drive switching ring 163 to rotate.Support member is fixed with inside housing 110 114, the inside of support member 114 sets bearing 115.Revolving part 142 is fixed on the inner ring of bearing 115, and switching ring 163 can then turn The outside of support member 114 is enclosed on dynamicly.Operating knob 164 protrudes the outer wall of housing 110, and entirely switches ring and be located in housing 110 Portion, make the outside of housing 110 clean and tidy.Action pane 116, reference picture 2 are provided with the outer wall of housing 110, it is allowed to which operating knob 164 exists Action pane 116 rotates in the range of limiting.

When operating knob 164 moves, clutch part 161 is driven to produce axial motion when switching ring 163 can be driven to rotate.Tool Body, switching ring 163 is provided with the first driver slot 165.First driver slot 165 is included in interval in the axial direction of working shaft 130 and set The first paragraph 1651 and second segment 1652 put.Clutch part 161 is connected with the sliding pin 182 coordinated with the first driver slot 165. Sliding pin 182 can move under the promotion of switching ring 163 along Fig. 5 front and rear direction.Wherein, when sliding pin 182 is located at first When in the first paragraph 1651 of driver slot 165, clutch part 161 is in its first position；When sliding pin 182 is located at the first driver slot When in 165 second segment 1652 (shown in ginseng Fig. 5).Clutch part 161 is in its second place.Thus, by making 163 turns of switching ring Dynamic, sliding pin 182 switches between first paragraph 1651 and second segment 1652, clutch part 161 is moved up in the axial direction of working shaft 130 Dynamic, i.e., clutch part 161 is changed between its first position and the second place.

Operating knob 164 is combined with switching ring 163, can be split.In other examples, the two can also be The element of integral type, that is, switching ring 163 has the outer wall that a position protrudes from housing 100.

Sliding pin 182 is provided on one end of a pull bar 180.Pull bar 180 is generally in shaft-like, along working shaft 130 it is axially extending, the other end of pull bar 180 fixed with clutch part 161 or have it is faint be intermittently connected, with can drive from Component 161 is axially moved.

For Fig. 2 into embodiment illustrated in fig. 6, operating parts 162 is driven by way of itself is rotated around the axis of working shaft 130 Dynamic clutch part 161 is axially moved.In other examples, operating parts 162 is not limited to rotate, for example, operating parts 162 can To be to be moved along parallel to the axially direction of working shaft 130 to drive clutch part 161 to be axially moved.

Join Fig. 3 and Fig. 4, when switching between continuous mode and impact wrench pattern, it is only necessary to operate foregoing operating parts 162, clutch part 161 is separated or is coupled with counterpart 150 after moving axially.When i.e. clutch part 161 is in the second place, Disengaged with working shaft 130.

Further, according to the difference of output torque, drill jig formula and screw batch mode can also be subdivided under continuous mode. Reference picture 2, the direction of motion of operating parts 162 is provided with gear instruction unit 117 on the outer wall of housing 110, wherein, from it is lower extremely On, drill jig formula is provided with a torsion regulation stall (gear of bottom), and screw batch mode is then further provided with 5 Torsion regulation stall, to adapt to the job requirements of the screw of different size.

Further, in order to adjust moment of torsion in a continuous mode, and also to simplify operation interface, multi-functional drill 100 The control circuit being connected with motor 120 is additionally provided with, to change the output torque of motor 120.Control circuit has variable elements Part 192, wherein, in the rotation process of operating parts 162 state of variable element 192 can be made to change, so that control circuit Change the output torque of motor 120, and then the purpose of the output torque of modulation working shaft 130.

The state of variable element 192 can change the operating current of motor 120 when changing, it is defeated to reach change motor 120 Go out the purpose of moment of torsion.In one embodiment, variable element 192 can be slide resistor.In other examples, variable element 192 can also be selecting switch, and operating parts 162 can make dependent element 182 connect different circuits, and then change the defeated of motor 120 Go out moment of torsion.

The output torque of the controlled motor 120 of operating parts 162 except it is above-mentioned refer to Electronic Control realization by way of in addition to, It can also be mechanically.For example, setting safety clutch, when the torque of transmission exceedes overload torque, cross and carry off Torsion transmission in clutch between power machine 120 and working shaft 130.

Specifically, operating parts 162 is arranged to：When clutch part 161, by its second place, (multi-functional drill 100 is in impact Spanner pattern) be switched to first position (multi-functional drill 100 is in continuous mode) after, operating parts 162 can continue to be operated simultaneously Control circuit is promoted to change the output torque of motor 120.Realize above-mentioned purpose, it is only necessary to be arranged such：First driver slot 165 first paragraph 1651 has the sliding space for allowing sliding pin 182 to advance, and the sliding space does not allow sliding pin 182 in work Make to produce displacement in the axial direction of axle 130.

Similarly, under impact wrench pattern, multiple torsion regulation stalls can also be set, as shown in Fig. 2 impact wrench mould Formula is provided with two gears, and the output torque of working shaft 130 is different under two gears.Therefore, operating parts 162 is also configured to： When clutch part 161 is switched to first position (multi-functional drill 100 by its first position (multi-functional drill 100 is in continuous mode) In impact wrench pattern) after, it can continue to be operated and promote the output torque of control circuit change motor 120.Realize above-mentioned Purpose, it is only necessary to be arranged such：The second segment 1652 of first driver slot 165 has the slip for allowing sliding pin 182 to advance empty Between, and the sliding space does not allow sliding pin 182 to produce displacement in the axial direction of working shaft 130.

For multi-functional drill 100, by operating operating parts 162 multi-functional drill 100 can be made to be cut by impact wrench pattern Continuous mode is changed to, may then continue with and change Motor torque by operating operating parts 162, realizes that torsion is adjusted.Therefore, pattern Switching switch and torsion regulation share an operating element, and operation interface is succinct, easy to operate.Further, impact wrench is worked as In the case that pattern sets multiple gears, by that by operating operating parts 162 multi-functional drill 100 can be made to be switched to punching by continuous mode Spanner pattern is hit, may then continue with and change motor speed by operating operating parts 162, realize the torsion under impact wrench pattern Regulation, mode selector switch and torsion regulation share an operating element, and operation interface is succinct, easy to operate.

Further, multi-functional drill 100 is the trigger control circuit by the way of operating parts 162, changes the work of motor 120 Make electric current, so as to change the rotating speed of motor 120 and moment of torsion, and then realize the torsion regulation of working shaft 130.

Further, due to being provided simultaneously with impact wrench pattern and screw batch mode.When needing high pulling torque operating mode, with punching The realization of spanner pattern is hit, the peak torque of screw batch mode can be smaller, to be used in small moment of torsion operating mode, can obtain phase When torsion adjustable range.Therefore reducing gear 122 is only with primary gear speed reducing system, i.e. the motor shaft of motor 120 can be with Only rotated by primary gear speed reducing system drive revolving part 142, without setting complicated multiple-stage planetary gear train system Meet the requirement of the output torque of working shaft 130 adjustment.Therefore, it is more compared to tradition machinery impact unit and stage-geared Function is bored, and using oil shock unit and primary gear speed reducing system, size is small, and cost is also low, and torsion adjustable range also compares Extensively.

Impact unit 140 is oil shock unit, and the impact of working shaft 130 is realized using the effect of hydraulic oil 144.At it In his embodiment, impact unit 140 can also be the impact unit of mechanical shock structure, for example, utilizing the more of revolving part 142 The impact components that individual pushing portion 1421 is intermittently impacted on working shaft in circumferencial direction, working shaft 130 is set to enter impact wrench mould Formula, impact components can be diametrically abutted with flexible member, are once hit after end, flexible member returns impact components Position to receive impact again.

In another embodiment, above-mentioned impact unit 140 can also use the impact unit 240 shown in Figure 16 and Figure 17 Replaced.Correspondingly, working shaft 130 is replaced with working shaft 230.With reference to diagram, the framework of brief description impact unit 240 And its operation principle.

Impact unit 240 includes driving the revolving part 242 of rotation by motor.Revolving part 242 is enclosed on one end of working shaft 230 On the outside of portion, closing space 243 is formed between working shaft 230.The inwall of revolving part 242 is provided with several sealings 2422.

The radial part 232 for being provided with to contact with sealing 2422 on the surface of working shaft 230.The number of radial part 232 Quantity of the amount less than sealing 2422.The surface of working shaft 230 is provided with the radial direction through hole to stagger in a circumferential direction with radial part 232 233.Two piston pieces 246 are provided with radial direction through hole 233.Hydraulic oil 244 is provided between two piston pieces 246, and is set Having to provide makes piston piece 246 keep the elastic component 247 with the elastic force of the inner wall sealing contact condition of revolving part 242.In addition, Between the inwall of piston piece 246 and radial direction through hole 233, and space between working shaft 230, revolving part 242, piston piece 246 is also It is marked with hydraulic oil 244.Making intermittently be formed between revolving part 242 and working shaft 230 in the rotation process of revolving part 242 to produce The high-pressure chamber of high oil pressure, also interval Ground shock waves working shaft 230 in a circumferential direction during 246 radial motion of piston piece, realizes work The pulsed for making axle 230 rotates, so as to realize impact wrench pattern.

Revolving part 242 relative to working shaft 230 rotate when, enable to radial part 232 to be contacted with sealing 2422.Wherein, In the rotation process of revolving part 242, high-pressure chamber a is formed when sealing 2422 contacts with radial part 232；Sealing 2422 and footpath To portion 232 in separation, high-pressure chamber a failures.

In one of embodiment, the inwall of revolving part 242 is provided with four sealings 2422, working shaft in a circumferential direction 230 are provided with two radial parts 232, and two piston pieces 246 are provided with working shaft 230, are set between two piston pieces flexible Part 247, wherein radial part 232 stagger with piston piece 246 on the circumferencial direction of working shaft.

Join a states of impact unit 240 in Figure 17, in the rotation process of revolving part 242, the sealing 2422 and radial part During 2322 contact, two high-pressure chamber a and two low pressure are formed between the revolving part and working shaft in a circumferential direction Chamber b.High oil pressure caused by high-pressure chamber a promotes the radial motion of piston piece 246, in circle while 246 radial motion of piston piece Working shaft 230 is impacted in circumferential direction, the high-pressure chamber a and low-pressure chamber b are spaced.

Revolving part 242 is rotated further according to the direction of arrow in diagram with respect to working shaft 230, will by a states in Figure 16 gradually to Up to the b-d states in Figure 16, the moment that wherein sealing 2422 separates with radial part 2322, high-pressure chamber a and low-pressure chamber b connects Logical, high-pressure chamber a fails, and promotes piston piece 246 to reset in the presence of elastic component 247.

After revolving part 242 rotates a circle, radial part 232 will contact again with sealing 2422, realize sealing, again shape Into high-pressure chamber a so that piston piece 246 drives working shaft 230 circumferentially to rotate again.In this way, revolving part 242 constantly revolves Turn, working shaft 230 is rotated with realizing clearance-type, i.e. pulse shock.

It is similar with impact unit 140, during using impact unit 240 and working shaft 230, the clutch part 161 of multi-functional drill 100 The left side or right side of revolving part 242 can be provided in the clutch position of counterpart 150.

With reference to figure 19, in another embodiment, impact drill function switch machine is added on the basis of multi-functional drill 100 Structure, obtain a kind of multi-functional drill 300 with four functions.There is impact wrench pattern, impact wrench function can be achieved, also have There is continuous mode (including drill jig formula and screw batch mode), can be achieved to bore function and screw batch facility, impact can also be switched to Drill jig formula, to realize impact drill function.Therefore, hereafter how emphasis description sets up impact drill work(on the basis of multi-functional drill 100 Can switching mechanism, and impact drill pattern how with other pattern switchings.

In one embodiment, multi-functional drill 300 includes housing 310, motor 320, working shaft 330, impact unit 340, cut Change component 350.Wherein the principle of impact unit 340 is identical with foregoing impact unit 140, is rushed with foregoing in addition Unit 240 is hit to substitute.By impact unit 340 select be impact unit 140 exemplified by, impact unit 340 produces working shaft 330 The mode of impact wrench function makes working shaft 230 realize that the mode of impact wrench function is identical with impact unit 140.Wherein When changeover module 350 is operated, it is possible to achieve selectively making can between the revolving part 342 of impact unit 340 and working shaft 330 Moment of torsion is transmitted, so as to realize the conversion of impact wrench pattern and continuous mode.Therefore here is omitted impact unit 340 and work Make the CONSTRUCTED SPECIFICATION of matching part between axle 330.

With reference to figure 19, on working shaft 330 also along its axially be also arranged at intervals with moved end tooth 361, static side tooth 362, second from Component 363, flexible positioning piece 364.Wherein moved end tooth 361 is arranged to that working shaft 330 can be followed to rotate together, and static side tooth 362 is then Loosely it is enclosed on working shaft 330, the second clutch part 363 can move axially (forward and backward in Figure 19 with respect to working shaft 330 Direction) to control 362 turns of static side tooth or not turn, flexible positioning piece 364 acts on the elasticity of the second clutch part 363 to provide Power, the second clutch part 363 need to overcome the resistance of flexible positioning piece 364 to be axially moved or in flexible positioning piece 364 Elastic force in the presence of reset.

Impact drill pattern is further realized under continuous mode.That is, can when multi-functional drill 300 is in continuous mode To be further subdivided into drill jig formula, screw batch mode, impact drill pattern, realize bore function, screw batch facility, impact drill work(respectively Energy.

Wherein, the end face of moved end tooth 361 is engaged with the end face of static side tooth 362 in the axial direction of working shaft 330.Moved end tooth 361 and the teeth portion faying face of static side tooth 362 are an inclined-planes, therefore when static side tooth 362 can not by the limitation of the second clutch part 363 During rotation, working shaft 330 drives moved end tooth 361 to rotate, and in the presence of inclined-plane, will produce an axial direction along working shaft 330 Thrust, the thrust makes moved end tooth 361 be separated with static side tooth 362, and drives working shaft 330 to move along its axis.In working shaft 330 make under high speed rotational case, and working shaft 330 will produce the axial impact of certain frequency, multi-functional drill 100 is in impact drill Pattern, realize impact drill function.When static side tooth 362 is not limited by the second clutch part 363, multi-functional drill 300 is in drill jig formula Or screw batch mode.

Changeover module 350 is to realize the conversion of impact wrench pattern and continuous mode, also controlling the second clutch part 363 axial movement is to realize the switching of impact drill pattern.

Changeover module 350 includes the first clutch part 351, to control the operating parts 352 of the first clutch part 351, wherein the One clutch part 351 can be changed in the axial direction of working shaft 330 between a first position and a second place, with selection Ground and the revolving part 342 of impact unit 340 realize moment of torsion transmission, so as to realize the conversion of impact wrench pattern and continuous mode. Operating parts 352 is also controlling the axial movement of the second clutch part 363 to realize the switching of impact drill pattern.

Join Figure 21 and 22, the first clutch part 351 is in its second place, the revolving part with impact unit 340 in the axial direction 342 disengage, and are in impact wrench pattern without moment of torsion transmission, multi-functional drill 300 therebetween, and impact wrench function can be achieved.

Join Figure 23 and 24, manipulation operation part 352, the first clutch part 351 is moved to its first position and impact unit 340 Revolving part 342 realize moment of torsion transmission, the drill jig formula or screw batch mode that multi-functional drill 300 is switched in continuous mode.Now, Static side tooth 362 is loosely enclosed on working shaft 330, is not limited by the second clutch part 363.

Join Figure 25 and 26, continue manipulation operation part 352, be axially moved the second clutch part 363, limitation static side tooth 362 is not It can rotate, then multi-functional drill 300 is by drill jig formula or screwdriver pattern switching to impact drill pattern.

In one embodiment, the first clutch part 351 for can clutch gear in axial sliding, it is arranged to and working shaft 330 are always maintained at mating relation, selectively keep mating relation with revolving part 342, naturally it is also possible to be just opposite.First from Component 351 can be connected or axially slid relative by spline with working shaft 330.Between first clutch part 351 and revolving part 342 also Connection can be realized by spline or is axially slid relative.

Join Figure 27 and 28, in one embodiment, operating parts 352 includes switching ring 353 and operating knob 354.354 groups of operating knob Outside loaded on switching ring 353, to drive switching ring 353 to rotate.It can pass through projection between operating parts 352 and switching ring 353 The modes such as embedded groove are combined together.Switching ring 353 is then enclosed on the outside of housing 110, and switching ring 353 can make first when rotating Clutch part 351 produces axial movement, and the second clutch part 363 is produced axial movement.Operating knob 354 is arranged to and housing 310 Relatively rotate and coordinate.In other examples, user can directly operate switching ring 353 and realize its rotation.In others In embodiment, the motion of the first clutch part 351 and the second clutch part 363 can be other motion modes beyond being axially moved, Such as rotate.The direction of motion of first clutch part 351 and the second clutch part 363 is also not necessarily limited to be along the axial direction of working shaft 330.

Switching ring 353 drives the first clutch part 351 to move by the first pull bar 370.In one embodiment, switch ring 353 are provided with the first driver slot 355.First driver slot 355 is included in spaced first paragraph in the axial direction of working shaft 330 3551 and second segment 3552.

First clutch part 351 is connected with the sliding pin 372 coordinated with the first driver slot 355.Sliding pin 372 is provided in On one end of one pull bar 370.When switching the rotation of ring 353, sliding pin 372 is driven in first paragraph 3551 and second segment 3552 Middle conversion, so as to realize the axial movement of the first clutch part 351, realize the connection with revolving part 342 or separate.

Switching ring 353 makes the second clutch part 363 produce axial movement by the second pull bar 380.In one embodiment, cut The edge of ring change 353 has the second driver slot 356.Second pull bar 380 is connected with or provided with can extend into the second driving Backing pin 382 in groove 356.Switching ring 353 is axially moved the second pull bar 380 by acting on backing pin 382, and then makes second Clutch part 363 is axially moved.In the switching rotation direction of ring 353, the opportunity that the generation of backing pin 382 is axially moved is set to cut as needed It is changed to depending on the opportunity of impact drill pattern.

First clutch part 351 is to be coupled in the left side of revolving part 342 with working shaft 230, similar with multi-functional drill 100, first Clutch part 351 can also be coupled in the left side of revolving part 342 with working shaft 230.

For example, in embodiment as shown in Figure 29 and Figure 30, the right-hand member of working shaft 330 stretches out revolving part 342.Operating parts 352 position correspondence moves to right, and the clutch position of the first clutch part 351 and working shaft 330 is also correspondingly disposed in revolving part 342 Right side.Wherein the first clutch part 351 drives rotation by motor via reducer structure 322, and is kept with revolving part 342 by spline Mating so that clutch part 361 can drive revolving part 342 rotate and can relative rotating element 342 move axially.Such as Figure 29 institutes Show, the first clutch part 351 is connected with revolving part 342, but is disengaged with working shaft 330, and working shaft 330 being capable of phase with revolving part 342 To rotating, multi-functional drill 300 is in impact wrench pattern.As shown in figure 30, the first clutch part 351 be axially moved after with working shaft 330 are connected by spline, realize the moment of torsion special delivery of revolving part 342 and working shaft 330, and multi-functional drill 300 enters continuous mode, Under this continuous mode, drill jig formula, screw batch mode and impact drill pattern can be further realized.

Multi-functional drill 300 is additionally provided with the control circuit electrically connected with motor 320.By setting control circuit, realize and use The mode of electronics limits output torque：Because the moment of torsion of the direct current generator of permanent-magnet-field is substantially proportional to current of electric, pass through Limiting motor electric current can limit corresponding moment of torsion.

Control circuit includes the ring switch 390 being fixed on housing 110.Operating knob 354 has to be connect with ring switch 390 Tactile shell fragment 3542.When operating knob 354 rotates, the contact position of shell fragment 3542 and ring switch 390 changes, and realizes motor 320 The change of output torque, and then the purpose of the output torque of adjustment work axle 330.

When operating knob 354 rotates, can be achieved the regulation of drill jig formula multiple gears, and under screw batch mode multiple gears tune Section, can also realize the regulation of multiple gears under impact wrench pattern.

In embodiment shown in Figure 21 to Figure 26, when multiple functional modes of multi-functional drill 300 switch, by impact wrench mould Can first switch to drill jig formula or first switch to screw batch mode when formula switches to continuous mode.By setting the The shape of one driver slot 355 and the second driver slot 356, position etc., pattern switching is set to be performed according to predetermined logic.With reference to Accompanying drawing is further elaborated on the pattern switching under different order.

With reference to figure 31, for the schematic diagram of the first operation interface of multi-functional drill 300.Wherein, it is respectively from top to bottom：Punching Spanner pattern is hit, there are 2 gears；Screw batch mode, provided with 5 gears；Drill jig formula, 1 gear is set.It is emphasized that Numbers of gear steps herein is only for example, and to illustrate the pattern switching principle under this kind of operation interface, the quantity of gear should not be with This is limited.Operating knob 354 is driven in the switching rotation process of ring 353, has the first stroke, the second stroke, the in rotation direction Triple-travel and fourth line journey, in the different stroke stages, to realize different functional modes.

Figure 32 to Figure 35 illustrates the pattern switching principle in the first operation interface.Each pattern switching order isWherein, at operating knob 354 In the first stroke range, the first clutch part 351 is separated with revolving part 342, without torsion between revolving part 342 and working shaft 330 Power transmission, multi-functional drill 300 are in impact wrench pattern, as shown in figure 32.Now, the backing pin on the second pull bar 380 382 Outside the second driver slot 356, the sliding pin 372 on the second pull bar 380 is then located at the first paragraph 3551 of the first driver slot 355 In.When multiple gears are set under impact wrench pattern, it can be turned by operating the operating knob 354 to change the output of motor 320 Speed.

During as shown in figure 33, it is necessary to by impact wrench pattern switching to screw batch mode, then rotating operation button 354, makes behaviour Make button 354 to turn in its second stroke range, switch ring 353 will make sliding pin 372 move to the first driver slot 355 second In section 3552, the first clutch part 351 makes to realize torsion between revolving part 342 and working shaft 330 after axially moving to first position Transmit.Backing pin 382 changes with switching the relative position of ring 353.

When operating knob 354 is turned in its second stroke range, screw batch mode is arranged to.Operating knob 354 is rotated further, Operating knob 354 enters in the range of its third trip, the position that can be contacted by changing shell fragment 3542 with ring switch 390, by spiral shell Silk batch mode switches into drill jig formula, as shown in figure 34.Under screw batch mode, the output torque of motor 320 is arranged to and drill jig Output torque is different under formula.

Further, screw batch mode is divided into be set to has multiple torsion regulation stalls more.It is arranged to：In the second stroke model If rotating operation button 354, can change the position that shell fragment 3542 contacts with ring switch 390, further be varied multiple times 320 in enclosing Output torque, so as to realize that the torsion under screw batch mode is adjusted.

Under screw batch mode and drill jig formula, clutch part 352 is in first position, and working shaft 230 follows revolving part 342 1 Play continuous rotation.

Operating knob 354 is rotated further, operating knob 354 will enter in the range of its fourth line journey.As shown in figure 35, backing pin 382 Enter in the second driver slot 356 and the second clutch part 363 is limited static side tooth 362 after being axially moved and rotate, clutch part 352 Position is constant, still in first position, and then realizes the axial impact of working shaft 330, so as to complete by drill jig formula to impacting drill jig The switching of formula.

When rotating backward operating knob 354, then each pattern switching order is just opposite.

Under the first operation interface, torsion regulation and the switching regulation of each functional mode under screw batch mode are to share one Regulating element, operation interface are succinct.

Under aforesaid operations interface, the output torque and rotating speed that operate the controlled motor of operating knob 354 are by electronically controlled Mode.In addition, the output torque and rotating speed of the operation controlled motor of operating knob 354 can also be by way of Mechanical course.Example Such as, safety clutch is set, when the torque of transmission exceedes overload torque, power machine 320 and working shaft 330 in safety clutch Between torsion transmission.

With reference to figure 36, for the schematic diagram of second of operation interface of multi-functional drill 300.Figure 37 to Figure 40 is illustrated second The pattern switching principle of kind operation interface.With the first operation interface similarly：Operating knob 354 drives switching ring 353 to rotate During, there is the first stroke, the second stroke, third trip and fourth line journey in rotation direction, in the different stroke stages, To realize different functional modes.First stroke corresponds to impact wrench pattern, and the second stroke corresponds to screw batch mode, and the 3rd Stroke corresponds to drill jig formula, and fourth line journey corresponds to impact drill pattern.

It is with the difference of the first operation interface：Each pattern switching order is It is suitable with each functional mode switching under the first operation interface Sequence is different.Thus, if multi-functional drill 300 is in impact wrench pattern at the beginning, drill jig formula can be switched to, is then switched To impact drill pattern；Or drill jig formula is first switched to, then impact wrench pattern is switched back into, then drill jig formula is switched to, then switch To impact drill pattern.In other words, compared with the first operation interface, the pattern switching under second of operation interface is equivalent to first The execution sequence of each stroke is adjusted under kind operation interface.

In one embodiment, shown in Figure 36, because impact wrench pattern is between drill jig formula and screw batch mode, accordingly The shape of the first driver slot of ground 355 is also improved.Specifically, compared with the first operation interface, now the first driver slot 355 It is changed to：Middle three-stage narrow, both ends are wide.Thus, switching ring 353 is by operating knob 354 when driving rotation, and sliding pin 372 is the Changed between the narrow/wide part of one driver slot 355, drive the first clutch part 351 to axially move in the longitudinal direction.

In one embodiment, setting operation button 354 first carries out fourth line journey scope, and multi-functional drill 300 is in impact drill jig Formula, as shown in figure 37, backing pin 382 are located in the second driver slot 356, and the second clutch part 363 is in the rotation of limitation static side tooth 362 Position.First clutch part 351 is in the position for making to realize torsion transmission between revolving part 342 and working shaft 330.

When needing by impact drill pattern switching to drill jig formula, operating knob 354 drives switching ring 353 to rotate to third trip model Enclose, the second clutch part 363 axially moves to the position for no longer limiting the rotation of static side tooth 362, so as to which impact function fails, into brill Pattern, as shown in figure 38.Position of the sliding pin 372 in the first driver slot 355 changes.

Continue to make operating knob 354 to drive switching ring 353 to rotate to the first stroke range, as shown in figure 39, at sliding pin 372 In the middle narrower part to the first driver slot 355, now the first clutch part 351, which axially moves to, does not reconnect revolving part 342 With the position of working shaft 330, so as to switch into impact wrench pattern.

Continue to make operating knob 354 to drive switching ring 353 to rotate to the second stroke range, the first driver slot 355 another Wider portion coordinates with sliding pin 372, and as shown in figure 40, the first clutch part 351 is in again makes revolving part 342 and working shaft The position of torsion transmission is realized between 330, so as to switch into screw batch mode.Regulation is needed in screwdriver mode tuning moment of torsion When, it is rotated further operating knob 354.

It is similar with the first operation interface, under second of operation interface, the output torque of the motor 320 under screw batch mode It is arranged to different from output torque under drill jig formula.And further, screw batch mode is divided into be set to more multiple torsion regulation shelves Position.It is arranged to：If the rotating operation button 354 in the second stroke range, shell fragment 3542 can be changed and contacted with ring switch 390 Position, be further varied multiple times 320 output torque, so as to realize the torsion under screw batch mode adjust.Therefore, the second row When journey and third trip, operating knob 354 can operatively be changed the output torque of motor 320.

It is similar with the first operation interface, under impact wrench pattern, operating knob 354 can also be operated to vary 320 it is defeated Go out rotating speed.And or realized by changing shell fragment 3542 and position that ring switch 390 contacts.

Under second of operation interface, torsion regulation and the switching regulation of each functional mode under screw batch mode are also to share one Individual regulating element, operation interface are succinct.

With reference to figure 41, for the schematic diagram of the third operation interface of multi-functional drill 300.The third operation interface is second On the basis of operation interface, operating knob 354 is divided for the first operating parts 3543 and the second operating parts 3544, wherein the first operating parts 3543 be mode selector button, to realize cutting between impact drill pattern, drill jig formula, impact wrench pattern, screw batch mode Change；Second operating parts 3544 is torsion switch bar, to realize the regulation of multiple gears under screw batch mode.

Join Figure 42 to Figure 45, operate pattern switching order and the complete phases of Figure 37 to 40 performed by the first operating parts 3543 Together.It is with the difference of second of operation interface：Need, in screwdriver mode tuning moment of torsion, not being to continue with rotation first Operating parts 3543, but be changed to operate the second operating parts 3544 to realize.In other words, the first operating parts 3543 switches to drive 353 motions, carry out the switching of the first stroke, the second stroke, third trip and fourth line journey.Second operating parts 3544 is then special to be used To carry out torsion regulation under screw batch mode.

The advantages of setting two operating parts is：When it is other patterns to need by screwdriver pattern switching, the first operation The distance that the needs of part 3543 rotate is fewer.For example, screwdriver pattern switching is impact drill pattern, with second of operation interface phase Than due to eliminating stroke when torsion under screw batch mode is adjusted required for the first operating parts 3543, the first operating parts 3543 Less distance can be rotated, improves efficiency.

Join Figure 46 to Figure 50, be the schematic diagram of the 4th kind of operation interface of multi-functional drill 300.Under 4th kind of operation interface, The transfer sequence of each pattern with second and the third operation interface pattern switching order it is identical, wherein with second The difference of operation interface is：Torsion regulation under screw batch mode is adjusted using autoelectrinic torsion, it is not necessary to is taken The mode of rotating operation button 354.It is with the difference of the third operation interface：Torsion control under screw batch mode uses Autoelectrinic torsion is adjusted, it is not necessary to takes the mode for rotating the second operating parts 3544.

Autoelectrinic torsion regulation principle be：As load increases, the electric current increase of motor, rotating speed declines, setting electricity Threshold values is flowed, when electric current reaches reservation threshold, then controlled motor is shut down, so as to improve the accuracy of moment of torsion regulation.

Such as：Set the first current threshold；The controller controlled motor rotating speed of motor maintains rotating speed predetermined value；Detecting electricity Electromechanics stream, when current of electric reaches first current threshold, the controller controls the motor stopping.

Further, after the first current threshold is set, the second current threshold of first current threshold is set lower than, When current of electric reaches second current threshold, the rotating speed of controller controlled motor is maintained at rotating speed predetermined value N1.Rotating speed Predetermined value N1 is less than motor speed during general work state, and motor can rapidly be made instead so in follow-up control Should.For multi-functional drill 100, it has impact wrench pattern, drill jig formula, a screw batch mode, and its operation interface is also unlimited In shown in Fig. 2, can also correspondingly there is other pattern switchings order.

As shown in figure 51, multi-functional drill 100 can also have second of operation interface.Operating parts 164 is to be enclosed on switching ring Knob outside 163, switching ring 163 is driven to rotate by rotating.Torsion regulation is also to be realized by rotating operation part 164, It is identical with the mode of operation of the first operation interface of multi-functional drill 300.

As shown in figure 52, multi-functional drill 100 can also have the third operation interface.Operating parts 164 is to be enclosed on switching ring Knob outside 163, switching ring 163 is driven to rotate by rotating.Operating parts 164 further comprises the first operating parts 1642, uses Switched with implementation pattern；And second operating parts 1644, to realize that the torsion under screw batch mode is adjusted.Using two operations Part, it is possible to reduce switch back into the number of turns rotated during impact wrench pattern.And pattern switching order is then：Impact wrench pattern, spiral shell Silk batch mode, drill jig formula.

As shown in figure 53, multi-functional drill 100 can also have the 4th kind of operation interface, the pattern with the third operation interface Transfer sequence is identical, and difference is that torsion regulation is adjusted using electronic torsion, and when load increases, the electric current of motor increases to During reservation threshold, controlled motor is shut down.

Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope that this specification is recorded all is considered to be.

Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed, But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims

A kind of 1. multi-functional drill, it is characterised in that including：

Housing；

Motor, to produce power；

Working shaft, to drive work head；

Oil shock unit, rotated to make working shaft produce batch (-type), including the revolving part being set on working shaft, revolving part It is interior to be provided with the closing space for being stored with hydraulic oil in addition to the work is assembled in radial motion in the closing space Piston piece in the guide groove of axle, the closing space include that the high-pressure chamber of high oil pressure, high-pressure chamber's shape can be produced Between working shaft described in Cheng Yu and the piston；

Changeover module, including clutch part, wherein the clutch part can be changed between the first location and the second location, it is described from For component at the first position, the clutch part connects the working shaft and revolving part, and band is started building when the revolving part rotates Make axle continuously to rotate together；The clutch part is at the second place, in the clutch part and the working shaft and revolving part At least one disengagement, during revolving part rotation, revolving part can intermittently promote piston piece radial motion and pass through piston Part interval Ground shock waves working shaft in a circumferential direction.
2. multi-functional drill according to claim 1, it is characterised in that the changeover module also includes driving the clutch part Operating parts, for the clutch part at first position, the operating parts can be by the output torque of operatively controlled motor.
3. multi-functional drill according to claim 1, it is characterised in that the changeover module also includes driving the clutch part Operating parts, for the clutch part at the second place, the operating parts can operatively be controlled the output speed of the motor.
4. the multi-functional drill according to Claims 2 or 3, it is characterised in that the operating parts can surround the working shaft Axis rotatably operated.
5. multi-functional drill according to claim 1, it is characterised in that the changeover module also includes driving the clutch part Operating parts, the operating parts includes the first operating parts and the second operating parts, wherein first operating parts is driving clutch Part is changed between the first location and the second location, and second operating parts is used for the output torque for controlling the motor and turned Speed.
6. multi-functional drill according to claim 1, it is characterised in that the motor shaft of the motor passes through primary gear speed reducing Revolving part described in system drive rotates.
7. multi-functional drill according to claim 1, it is characterised in that the one end of the working shaft is provided with axial hole, separately One end is used to drive the work head, and the axial hole is built-in with the camshaft for following the revolving part to rotate together, the work Make to be additionally provided with the radial passage for accommodating the piston piece on the outer surface of axle, lead between the radial passage and the axial hole Cross radial hole connection, the radial passage also accommodate can clogging radial hole ball, the revolving part is internally provided with use To force pushing portion of the piston piece radially towards the camshaft motion；

When the pushing portion does not abut radially with the piston piece, the axial hole connects with closing space, in closing space Hydraulic oil can enter the axial hole；

The pushing portion diametrically abuts residence when stating piston piece, and the camshaft completely cuts off the axial hole and closing space, And the ball blocks the radial hole, the hydraulic oil makes piston piece keep diametrically abutting state with the pushing portion；

The pushing portion is not from the piston piece is abutted radially to during abutting the piston piece, and the piston piece is radially The working shaft is along the circumferential direction impacted while motion.
8. multi-functional drill according to claim 7, it is characterised in that the pushing portion has climbing face and bearing surface, institute Stating has transition face and contact surface at the top of piston piece, in the pushing portion rotation process, climbing face is advanced and forced along transition face Piston piece radial motion diametrically abuts until bearing surface with contact surface.
9. multi-functional drill according to claim 1, it is characterised in that the changeover module also includes driving the clutch part Operating parts, the operating parts moved to drive the clutch part along the axially direction parallel to the working shaft.
10. multi-functional drill according to claim 1, it is characterised in that the changeover module also includes driving the clutch The operating parts of part, the operating parts include the switching ring that can be rotated, and the switching ring is provided with the first driver slot, the clutch Part is connected with the sliding pin coordinated with the first driver slot, can make clutch part axial by sliding pin in the switching ring rotation process Motion.