CN109129343A - Multi-functional drill - Google Patents

Abstract

The present invention relates to a kind of multi-functional drills, comprising: shell；Motor；Working shaft；Oil shock unit, to make working shaft generate intermittent rotation, including the revolving part being set on working shaft；Changeover module, operating parts including clutch part and the driving clutch part, wherein the clutch part can be converted between the first location and the second location, the clutch part is at the first position, the clutch part connects the working shaft and revolving part, and working shaft continuous rotation together is driven when the revolving part rotates；The clutch part is in the second position, clutch part and at least one of the working shaft and revolving part disengage, the revolving part makes working shaft generate intermittent rotation when rotating, wherein the clutch position of the clutch part is located at side of the oil shock unit far from motor.Only need to consider the i.e. certifiable oil shock unit of sealing between revolving part one end and working shaft and the sealing between working shaft.

Description

Multi-functional drill

Technical field

The present invention relates to electric tools, more particularly to a kind of multi-functional drill.

Background technique

Traditional multi-functional drill that impact wrench function is realized using oil shock unit bores batch mould due to also needing to realize Formula (i.e. drill jig formula and/or screw batch mode) needs to consider impact wrench mode and bores the switching between batch facility mode, causes Encapsulation scheme between working shaft and oil shock unit is complex.

Summary of the invention

Based on this, it is necessary to which the encapsulation scheme provided between a kind of working shaft and oil shock unit is simply multi-functional It bores.

A kind of multi-functional drill, comprising:

Shell；

Motor, to generate power；

Working shaft, to drive work head；

Oil shock unit, to make working shaft generate intermittent rotation, including the revolving part being set on working shaft, rotation Turn to be equipped in part be stored with the enclosure space of hydraulic oil, further include can be assembled in radial motion in the enclosure space it is described Piston piece in the guide groove of working shaft；

Changeover module, including clutch part, wherein the clutch part can be converted between the first location and the second location, institute State clutch part at the first position, the clutch part connects the working shaft and revolving part, the band when revolving part rotates Dynamic working shaft continuous rotation together；The clutch part in the second position, in clutch part and the working shaft and revolving part At least one disengagement, the revolving part makes working shaft generate intermittent rotation when rotating, wherein the clutch position of the clutch part Side setting in oil shock unit far from motor.

Above-mentioned multi-functional drill realizes impact wrench function using oil shock unit, by connecting clutch part selectively The revolving part and working shaft of oil shock unit realize impact wrench mode and bore the switching between batch mode, wherein clutch part With the side for being located at oil shock unit at the cooperation of working shaft, and close to the one end of the working shaft to drive work head, The other end of working shaft is sealed by revolving part, thus, it is only necessary to consider sealing between revolving part one end end and working shaft i.e. It can guarantee the sealing between oil shock unit and working shaft.

The enclosure space includes that can generate the high-pressure chamber of high oil pressure in one of the embodiments, the high pressure Chamber is between the working shaft and the piston piece.

The one end of the working shaft is equipped with axial hole in one of the embodiments, and the other end is for driving the work Make head, the axial hole is built-in with the camshaft for following the revolving part to rotate together, also sets on the outer surface of the working shaft It is equipped with the radial passage for accommodating the piston piece, 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 is connected to enclosure space, enclosure space Interior hydraulic oil can enter the axial hole；The pushing portion abuts residence radially when stating piston piece, the camshaft every The exhausted axial hole and enclosure space, and the ball blocks the radial hole, the hydraulic oil make piston piece keep with it is described Pushing portion abuts state radially；

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.

The pushing portion has climbing face and bearing surface in one of the embodiments, 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 is abutted with contact surface radially.

The enclosure space includes that can generate the high-pressure chamber of high oil pressure in one of the embodiments, the high pressure Chamber is formed between the revolving part, the working shaft and the piston piece.

The inner wall of the revolving part is equipped with several sealings in one of the embodiments, on the surface of the working shaft Equipped with radial part, in the revolving part rotation process, the high-pressure chamber is formed when sealing is contacted with radial part.

The inner wall of the revolving part is set in a circumferential direction there are four the sealing in one of the embodiments, and two A radial part and two piston pieces, elastic component is provided between two piston pieces to provide makes piston piece and rotation The inner wall for turning part keeps elastic force in sealing contact, and the radial part and the piston piece are wrong on the circumferencial direction of working shaft It opens；

In revolving part rotation process, when the sealing and radial part contact, the revolving part makes the indoor height of high pressure chest Pressure oil pushes piston piece radial motion, and piston piece radial motion while impacts the working shaft in a circumferential direction.

When the clutch part is by being in first position in one of the embodiments, the operating parts can be operated simultaneously The control circuit is promoted to change the output torque of the motor.

When the clutch part is in the second position in one of the embodiments, the operating parts can be described in operation The output revolving speed of motor.

The multi-functional drill further includes the operating parts for driving the clutch part, the operation in one of the embodiments, Part includes the first operating parts and the second operating parts, wherein first operating parts is to drive clutch part in first position and second It is converted between position, second operating parts is to the motor described in operation change when clutch is in the first position Output torque.

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

Detailed description of the invention

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

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 mode；

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 assembly shown in fig. 5；

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

Fig. 8-Figure 11 be Fig. 7 shown in impact unit A-A to schematic sectional view, illustrate impact unit revolving part rotation The state when different location of camshaft in the process；

Figure 12-Figure 15 is another schematic sectional view of impact unit shown in Fig. 7, illustrates the revolving part rotation of impact unit The state when different location of camshaft in the process；

Figure 16 is the impact unit of another embodiment and the schematic sectional view that 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 state 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 multi-functional drill shown in Figure 19；

D-D when Figure 21 multi-functional drill is in impact wrench mode in Figure 20 to schematic cross-sectional view；

E-E when Figure 22 multi-functional drill is in impact wrench mode in Figure 20 to schematic cross-sectional view；

D-D when Figure 23 multi-functional drill is in screwdriver or drill jig formula in Figure 20 to schematic cross-sectional view；

E-E when Figure 24 multi-functional drill is in screwdriver or drill jig formula in Figure 20 to schematic cross-sectional view；

D-D when Figure 25 multi-functional drill is in impact drill mode in Figure 20 to schematic cross-sectional view；

E-E when Figure 26 multi-functional drill is in impact drill mode in Figure 20 to schematic cross-sectional view；

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

Figure 28 is the structural schematic diagram 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 mode；

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 different function mode；

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 different function mode；

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 different function mode；

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 different function mode；

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

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

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

Related elements reference numeral in figure is as follows:

100, multi-functional drill 110, shell 112, first part

1122, handle portion 113, second part 114, supporting element

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

120, motor 122, deceleration mechanism 130, working shaft

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

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

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

143, enclosure space 144, hydraulic oil 145, camshaft

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

147, ball 150, counterpart 160, changeover module

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

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

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

170, battery pack 180, push-pull rod 182, sliding pin

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

233, radial through-hole 240, impact unit 242, revolving part

2422, sealing 243, enclosure space 244, hydraulic oil

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

310, shell 320, motor 322, deceleration mechanism

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

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

353, switch ring 354, operating knob 3542, elastic slice

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

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

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

364, flexible positioning piece 370, the first push-pull rod 372, sliding pin

380, the second push-pull rod 382, backing pin 390, ring switch

Specific embodiment

To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating It is thorough comprehensive.

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

Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases Any and all combinations of the listed item of pass.

With reference to the accompanying drawing, the better embodiment of multi-functional drill is described in detail.

Please refer to figs. 1 to 4, multi-functional drill 100 include shell 110, motor 120, working shaft 130, impact unit 140, Control circuit, counterpart 150, changeover module 160, wherein motor 120 is to output power, and impact unit 140 is to make work Axis 130 generates ballistic motion (i.e. intermittent rotation or the rotation of pulsed) in a circumferential direction, and changeover module 160 can drive Dynamic counterpart 150 selectively cooperates with impact unit 140 so that multi-functional drill 100 can in impact wrench mode and Switch between continuous mode (i.e. continuous rotation).Under continuous mode, working shaft only continuous rotation does not generate intermittent rotation.

In one embodiment, join Fig. 3 and Fig. 4, shell 110 is used to accommodate and position the other elements of multi-functional drill 100, is The support frame of multi-functional drill 100.Shell 110 includes first part 112, installing motor 120, and battery is coupled Packet 170.As shown in Figure 1, the first part 112 is there are also proficiency shank 1122 is formed for holding, battery pack 170 is arranged in handle The end in portion 1122.Motor 120, handle portion 1122, the setting of 170 or more under type of battery pack, can reduce the size in transverse direction, Meet human body operating habit simultaneously.First part 112 is Hafu-type, is spliced by left and right two halves.Shell 110 further includes second Part 113, positioned at the side of first part 112, one end is embedded in the first part 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, shell 110 is actually spliced by three parts.Certainly, Second part 113 is also possible to be spliced by two halves formula, and further, the two halves of second part 113 can be respectively with first The two halves of part 112 are structure as a whole, i.e., at this point, entire shell 110 is exactly that left and right two halves are spliced.

Motor 120 is placed in first part 112, the axial direction of motor 120 and the row of first part 112 and second part 113 Column direction is consistent, also axial consistent with working shaft 130.Dc motor can be used in motor 120, by battery pack 170 above-mentioned 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 deceleration mechanism 122, set is on the outside of the one end of working shaft 130, with working shaft 130 Enclosure space 143 is formed between end, and is sealed with hydraulic oil 144 in the enclosure space 143.

The end that working shaft 130 protrudes into revolving part 142 is equipped with axial hole 131.Revolving part 142 is internally connected with camshaft 145.Camshaft 145, which protrudes into, has rotation space in axial hole 131 and in axial hole 131, camshaft 145 is to follow revolving part 142 rotate together.The outer surface of working shaft 130 is equipped with the interface channel 132 of connection axial hole 131 and enclosure space 143.It is convex In 145 rotary course of wheel shaft, there is the position that can completely cut off axial hole 131 Yu enclosure space 143；Also having allows axial hole 131 positions being connected with enclosure space 143, hydraulic oil 144 can circulate at this time.

Guide groove 133 is additionally provided on the outer surface of working shaft 130, the guide groove 133 in a circumferential direction with interface channel 132 are staggered.Guide groove 133 is at least symmetrical arranged at two in the axis two sides of working shaft 130.Guide groove 133 is along working shaft 130 It radially extends, is 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 axis 130.Being dimensioned to for ball 147 is clogging by radial hole 134, to completely cut off guide groove 133 and axis To hole 131.

Being internally provided with for revolving part 142 is multiple to force piston piece 146 to push radially towards what camshaft 142 moved Portion 1421.When revolving part 142 rotates, pushing portion 1421, camshaft 145 rotate, the phase of pushing portion 1421, camshaft 145 It is set as being staggered 90 degree.

As shown in figs. 8 and 12, wherein when camshaft 145 allows axial hole 131 to be connected with enclosure space 143, Camshaft 145 is in a horizontal position, and pushing portion 1421 is located at 145 top of camshaft, does not abut piston piece 146.Work as pushing portion 1421 rotation 90 degree move to radially with piston piece 146 keep abut state when, camshaft 145 is perpendicular by level conversion Directly, and interface channel 132 is blocked to completely cut off axial hole 131 and enclosure space 143, as shown in Figure 11 and Figure 15.

Pushing portion 1421 has climbing face 1422 and bearing surface 1423, includes transition face 1461 at the top of piston piece 146 and connects Contacting surface 1462, wherein in 1421 rotation process of pushing portion, climbing face 1422 is successfully climbed along transition face 1461 advances and forces 146 radial motion of piston piece is abutted with contact surface 1462 radially until bearing surface 1423.Climbing face 1422 and transition face 1461 are disposed as inclined-plane, convenient for climbing.

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 climbing at the top of part 146, piston piece 146 pushes the work forward the rotation of axis 130 simultaneously, and hydraulic oil 144 starts from interface channel 132 Into in axial hole 131.When pushing portion 1421 abuts piston piece 146 radially, 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 pushes The position that portion 1421 abuts against.Pushing portion 1421 continues to rotate, pushing portion 1421 and piston piece 146 it is out of gear mesh during, liquid Pressure oil 144 starts to enter in axial hole 131 from interface channel 132, while the rotation of axis 130 that pushes the work forward, and piston piece 146 is in oil pressure Axial hole 131 is radially away under effect to abut against again with next pushing portion 1421.Repeatedly, impact unit 140 pairs of working shafts 130 persistently generate impact torque.

Join Fig. 3 and Fig. 4, is additionally provided with counterpart 150 in shell 110.Counterpart 150 is installed on working shaft 130 and can Working shaft 130 is driven to rotate together.Multi-functional drill 100 further includes changeover module 160, selectively connects counterpart 150 and rotation Turn part 142.When changeover module 160 is not connected to counterpart 150 and revolving part 142, the rotation of revolving part 142 is to counterpart 150 It does not work, the revolving part 142 of impact unit 140 can be rotated relative to working shaft 130, and impact unit 140 can be to working shaft 130 persistently generate impact torque, into impact wrench mode, execute the function of impact wrench.It is coupled when changeover module 160 connects When part 150 and revolving part 142, working shaft 130 will be driven to rotate together by counterpart 150 when revolving part 142 rotates, be equivalent to Revolving part 142 and working shaft 130 are locked together, therefore impact unit 140 will not impact working shaft 130, at this time working shaft Continuous rotation, multi-functional drill 100 are entered continuous mode by 140.

Join Fig. 2 and Fig. 3, when needing to switch between impact wrench mode 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 counterpart 150 and the state of revolving part 142 , switch very convenient.

Changeover module 160 includes clutch part 161 and the operating parts for driving clutch part 161 in one of the embodiments, 162.Clutch part 161 can be converted in the axial direction of working shaft 130 between a first position and a second position.Its In, join Fig. 3, clutch part 161 is in its first position in the axial direction of working shaft 130, at this point, clutch part 161 while and revolving part 142 and counterpart 150 there are matching relationship, revolving part 142 is connect by clutch part 161 with counterpart 150 both to be made to realize torque Transmitting, multi-functional drill 100 are in continuous mode.

When needing to be switched to impact wrench mode from continuous mode, it is only necessary to operate operating parts 162 above-mentioned, make clutch Part 161 separates after moving axially with counterpart 150, i.e., clutch part 161 is only connect with revolving part 142, but de- with counterpart 150 It opens, joins Fig. 4, revolving part 142 cannot transmit torque to counterpart 150.Multi-functional drill 100 will enter impact wrench mode.

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

Clutch part 161 can be connect or be 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 fits together.In another implementation In example, counterpart 150 and working shaft 130 are integral type, and counterpart 150 is considered as a part of working shaft 130 at this time.

In one embodiment, as shown in Figure 3 and Figure 4, clutch part 161 is the front and working shaft 130 in impact unit 140 It selectively combines, 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 far 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 shell 110.Clutch Position is clutch part 161 and 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.Since revolving part 142 is covered in the other end (right end of working shaft 130 in Fig. 4) outside of working shaft 130, and and work Make to form enclosure space 143 between the end of axis 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 161 side of clutch part 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 is also possible to be arranged in revolving part Impact unit 140 is arranged in close to the side of motor 120 in 142 right side.At this point, the right end of working shaft 130 stretches out revolving part 142, it is sealed between 142 left and right sides of revolving part 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 together, 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.Supporting element is fixed with inside shell 110 114, bearing 115 is set inside the supporting element 114.Revolving part 142 is fixed on the inner ring of bearing 115, and switches ring 163 and then may be used It rotationally covers in the outside of supporting element 114.The outer wall of the prominent shell 110 of operating knob 164, and entirely switch ring and be located at shell 110 Inside keeps 110 outside of shell clean and tidy.It is provided with action pane 116 on the outer wall of shell 110, referring to Fig. 2, allows operating knob 164 It is rotated in the range of action pane 116 limits.

When operating knob 164 moves, switching ring 163 can be driven to drive clutch part 161 to generate axial movement when rotating.Tool Body, switching ring 163 is equipped with the first driver slot 165.First driver slot 165 includes being spaced to set in the axial direction of working shaft 130 The first segment 1651 and second segment 1652 set.Clutch part 161 is connected with the sliding pin 182 cooperated with the first driver slot 165. Sliding pin 182 can move under the promotion of switching ring 163 along the front and rear direction of Fig. 5.Wherein, when sliding pin 182 is located at first When in the first segment 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 position.As a result, by making 163 turns of ring of switching Dynamic, sliding pin 182 switches between first segment 1651 and second segment 1652, moves up clutch part 161 in the axial direction of working shaft 130 Dynamic, i.e., clutch part 161 is converted between its first position and the second position.

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

Sliding pin 182 is arranged on one end of a push-pull rod 180.Push-pull rod 180 is generally in rod-shaped, along working shaft 130 it is axially extending, the other end of push-pull rod 180 and clutch part 161 it is fixed or have it is faint intermittently connect, be able to drive from Component 161 is axially moved.

For Fig. 2 into embodiment illustrated in fig. 6, operating parts 162 is driven by way of the axis rotation of working shaft 130 at itself Dynamic clutch part 161 is axially moved.In other examples, operating parts 162 is not limited to rotate, for example, operating parts 162 can Being moved along the axially direction for being parallel to 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 mode, it is only necessary to operate operating parts above-mentioned 162, it separates or is coupled with counterpart 150 after moving axially clutch part 161.I.e. clutch part 161 is in the second position When, it is 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. Referring to Fig. 2, the direction of motion on the outer wall of shell 110 along operating parts 162 is provided with gear instruction unit 117, wherein from down toward 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 torque in a continuous mode, and also to simplify operation interface, multi-functional drill 100 It is additionally provided with the control circuit connecting with motor 120, to change the output torque of motor 120.Control circuit has variable elements Part 192, wherein the state of variable element 192 can be made to change in 162 rotation process of operating parts, to make control circuit Change the output torque of motor 120, and then achievees the purpose that 130 output torque of modulation working shaft.

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

Operating parts 162 control motor 120 output torque in addition to it is above-mentioned refer to electronic control realize by way of other than, It can also be mechanically.For example, setting safety clutch is crossed and is carried off when the torque of transmitting is more than overload torque Torsion transmitting in clutch between power machine 120 and working shaft 130.

Specifically, operating parts 162 is arranged to: when by its second position, (multi-functional drill 100 is in impact to clutch part 161 Spanner mode) 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 such setting: the first driver slot 165 first segment 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 generate displacement in the axial direction of axis 130.

Similarly, under impact wrench mode, multiple torsion regulation stalls also can be set, as shown in Fig. 2, impact wrench mould Formula setting is there are two gear, and the output torque of working shaft 130 is different under two gears.For this purpose, 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 mode) after, it can continue to the output torque for being operated and control circuit being promoted to change motor 120.It realizes above-mentioned Purpose, it is only necessary to such setting: the second segment 1652 of the first driver slot 165 has the sliding for allowing sliding pin 182 to advance empty Between, and the sliding space does not allow sliding pin 182 to generate displacement in the axial direction of working shaft 130.

For multi-functional drill 100, multi-functional drill 100 can be made to be cut by impact wrench mode by operating operating parts 162 Continuous mode is changed to, may then continue with and Motor torque is changed by operation operating parts 162, realizes that torsion is adjusted.Therefore, mode Switching switch and torsion, which are adjusted, shares an operating element, and operation interface is succinct, easy to operate.Further, work as impact wrench In the case where the multiple gears of mode setting, multi-functional drill 100 is set to be switched to punching by continuous mode by operation operating parts 162 can be passed through Spanner mode is hit, may then continue with and motor speed is changed by operation operating parts 162, realize the torsion under impact wrench mode It adjusts, mode selector switch and torsion adjust and shares 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, to change the revolving speed and torque of motor 120, and then realizes that the torsion of working shaft 130 is adjusted.

Further, due to being provided simultaneously with impact wrench mode and screw batch mode.When needing large torque operating condition, with punching The realization of spanner mode is hit, the peak torque of screw batch mode can be smaller, to use in small torque operating condition, can obtain phase When torsion adjustable range.Therefore deceleration mechanism 122 is only with primary gear speed reducing system, i.e. the motor shaft of motor 120 can be with It is only rotated by primary gear speed reducing system drive revolving part 142, the multiple-stage planetary gear train system without being arranged complicated comes Meet the requirement of 130 output torque of working shaft adjustment.Therefore, 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 is also possible to the impact unit of mechanical shock structure, for example, utilizing the more of revolving part 142 A pushing portion 1421 intermittently impacts the impact components on working shaft in circumferencial direction, and working shaft 130 is made to enter impact wrench mould Formula can abut impact components radially with elastic element, and after being once hit, elastic element returns impact components Position to receive impact again.

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

Impact unit 240 includes the revolving part 242 that rotation is driven by motor.242 sets of revolving part the one of working shaft 230 On the outside of end, enclosure space 243 is formed between working shaft 230.The inner wall of revolving part 242 is provided with several sealings 2422。

The radial part 232 to contact with sealing 2422 is provided on the surface of working shaft 230.The number of radial part 232 Amount is less than the quantity of sealing 2422.230 surface of working shaft is equipped with the radial through-hole being staggered in a circumferential direction with radial part 232 233.There are two piston pieces 246 for setting in radial through-hole 233.Hydraulic oil 244, and setting are provided between two piston pieces 246 Have to provide the elastic component 247 for keeping piston piece 246 with the elastic force of 242 inner wall of revolving part state in sealing contact.This Outside, between piston piece 246 and the inner wall of radial through-hole 233 and working shaft 230, revolving part 242, the sky between piston piece 246 Between be also marked with hydraulic oil 244.Make intermittently be formed between revolving part 242 and working shaft 230 in 242 rotation process of revolving part It can generate the high-pressure chamber of high oil pressure, also interval Ground shock waves working shaft 230 in a circumferential direction when 246 radial motion of piston piece, The pulsed rotation for realizing working shaft 230, to realize impact wrench mode.

When revolving part 242 is rotated relative to working shaft 230, radial part 232 is enabled to contact with sealing 2422.Wherein, In 242 rotation process of revolving part, high-pressure chamber a is formed when sealing 2422 is contacted with radial part 232；Sealing 2422 and diameter To portion 232 in separation, high-pressure chamber a failure.

In one embodiment, the inner wall of revolving part 242 is set in a circumferential direction there are four sealing 2422, working shaft It is set on 230 there are two radial part 232, is set in working shaft 230 there are two piston piece 246, is arranged between two piston pieces flexible Part 247, wherein radial part 232 is staggered on the circumferencial direction of working shaft with piston piece 246.

The a state for joining impact unit 240 in Figure 17, in 242 rotation process of revolving part, the sealing 2422 with it is radial When portion 2322 contacts, two high-pressure chamber a are formed between the revolving part and working shaft in a circumferential direction and two low Press chamber b.The high oil pressure that high-pressure chamber a is generated pushes 246 radial motion of piston piece, while 246 radial motion of piston piece Working shaft 230 is impacted on circumferencial direction, the high-pressure chamber a and low-pressure chamber b are spaced each other.

Revolving part 242 is continued to rotate according to arrow direction in diagram with respect to working shaft 230, will by a state in Figure 16 gradually to Up to the b-d state in Figure 16, wherein the moment isolated with radial part 2322 of sealing 2422, high-pressure chamber a and low-pressure chamber b connect Logical, high-pressure chamber a fails, and piston piece 246 is promoted to reset under the action of elastic component 247.

After revolving part 242 rotates a circle, radial part 232 will be contacted again with sealing 2422, realize sealing, again shape At 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, rotates working shaft 230 with realizing clearance-type, i.e. pulse shock.

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

With reference to Figure 19, in another embodiment, impact drill function switch machine is increased on the basis of multi-functional drill 100 Structure obtains a kind of multi-functional drill 300 with four functions.Has the function of impact wrench mode, it can be achieved that impact wrench, also has There is continuous mode (including drill jig formula and screw batch mode), it can be achieved that boring function and screw batch facility, impact can also be switched to Drill jig formula, to realize impact drill function.Therefore, hereafter how emphasis description on the basis of multi-functional drill 100 adds impact drill function Can switching mechanism and impact drill mode how with other pattern switchings.

In one embodiment, multi-functional drill 300 includes shell 310, motor 320, working shaft 330, impact unit 340, cuts Change component 350.Wherein the principle of impact unit 340 is identical as impact unit 140 above-mentioned, is furthermore also possible to punching above-mentioned Hit the substitution of unit 240.By impact unit 340 select be impact unit 140 for, impact unit 340 make working shaft 330 produce The mode of raw impact wrench function makes working shaft 230 realize that the mode of impact wrench function is identical with impact unit 140. When wherein changeover module 350 is operated, it may be implemented selectively to make between the revolving part 342 of impact unit 340 and working shaft 330 Torque can be transmitted, to realize the conversion of impact wrench mode and continuous mode.Therefore details are not described herein again impact unit 340 with The CONSTRUCTED SPECIFICATION of matching part between working shaft 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 set as that working shaft 330 can be followed to rotate together, and static side tooth 362 is then It loosely covers 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 the resistance for overcoming flexible positioning piece 364 that can be axially moved or in flexible positioning piece 364 Elastic force under the action of reset.

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

Wherein, the end face of moved end tooth 361 is engaged in the axial direction of working shaft 330 with the end face of static side tooth 362.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 When rotation, working shaft 330 drives moved end tooth 361 to rotate, and under the action of inclined-plane, will generate an axial direction along working shaft 330 Thrust, which separate moved end tooth 361 with static side tooth 362, and working shaft 330 is driven to move along its axis.In working shaft In the case of 330 make high speed rotation, working shaft 330 will generate the axial impact of certain frequency, and multi-functional drill 100 is made to be in impact drill Mode realizes 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.

Conversion of the changeover module 350 to realize impact wrench mode and continuous mode, also to control the second clutch part 363 axial movement is to realize the switching of impact drill mode.

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

Join Figure 21 and 22, the first clutch part 351 is in its second position, the revolving part with impact unit 340 in the axial direction 342 disengage, and transmit without torque therebetween, multi-functional drill 300 is in impact wrench mode, it can be achieved that impact wrench function.

Join Figure 23 and 24, manipulates operating parts 352, the first clutch part 351 is made to move to its first position and impact unit 340 Revolving part 342 realize torque transmitting, multi-functional drill 300 switches to drill jig formula or screw batch mode in continuous mode.At this point, Static side tooth 362 is loosely covered on working shaft 330, is not limited by the second clutch part 363.

Join Figure 25 and 26, continue to manipulate operating parts 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 mode.

In one embodiment, the first clutch part 351 be can clutch gear in axial sliding, be set as and working shaft 330 are always maintained at mating relationship, selectively keep mating relationship with revolving part 342, naturally it is also possible to be just opposite.First from Component 351 can be connect or be 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.Protrusion can be passed through between operating parts 352 and switching ring 353 The modes such as insertion groove are combined together.Switching ring 353 is then covered in the outside of shell 110, and first can be made by switching when ring 353 rotates Clutch part 351 generates axial movement, and the second clutch part 363 is made to generate axial movement.Operating knob 354 is set as and shell 310 Relatively rotate cooperation.In other examples, user can directly operate switching ring 353 and realize its rotation.In others In embodiment, the movement of the first clutch part 351 and the second clutch part 363 can be other motion modes other than being axially moved, Such as it rotates.The direction of motion of first clutch part 351 and the second clutch part 363 is also not necessarily limited to be the axial direction along working shaft 330.

Switch ring 353 and the movement of first clutch part 351 is driven by the first push-pull rod 370.In one embodiment, switch ring 353 are equipped with the first driver slot 355.First driver slot 355 includes the spaced first segment in the axial direction of working shaft 330 3551 and second segment 3552.

First clutch part 351 is connected with the sliding pin 372 with the cooperation of the first driver slot 355.Sliding pin 372 is setting the On one end of one push-pull rod 370.When switching the rotation of ring 353, drive sliding pin 372 in first segment 3551 and second segment 3552 Conversion, to realize the axial movement of the first clutch part 351, realization is connected or separated with revolving part 342.

Switching ring 353 makes the second clutch part 363 generate axial movement by the second push-pull rod 380.In one embodiment, cut The edge of ring change 353 has the second driver slot 356.Second push-pull rod 380 is connected with or equipped with can extend into the second driving Backing pin 382 in slot 356.Switching ring 353 is axially moved the second push-pull rod 380 by acting on backing pin 382, and then makes second Clutch part 363 is axially moved.In switching 353 rotation direction of ring, the opportunity for making backing pin 382 generate axial movement cuts as needed It is changed to depending on the opportunity of impact drill mode.

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

For example, the right end of working shaft 330 stretches out revolving part 342 in embodiment as shown in Figure 29 and Figure 30.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 is driven by motor via reducer structure 322 and is rotated, and is kept with revolving part 342 by spline Mating, so that clutch part 361 is able to drive the rotation of revolving part 342 and being capable of the axial movement of relative rotating element 342.Such as Figure 29 institute Show, the first clutch part 351 is connect with revolving part 342, but is disengaged with working shaft 330, and working shaft 330 being capable of phase with revolving part 342 To rotation, multi-functional drill 300 is in impact wrench mode.As shown in figure 30, the first clutch part 351 be axially moved after with working shaft 330 are connected by spline, realize the torque 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 mode can be further realized.

Multi-functional drill 300 is additionally provided with the control circuit being electrically connected with motor 320.By the way that control circuit is arranged, realizes and use The mode of electronics limits output torque: since the torque of the direct current generator of permanent-magnet-field is substantially proportional to current of electric, passing through Limiting motor electric current can limit corresponding torque.

Control circuit includes the ring switch 390 being fixed on shell 110.Operating knob 354 has to be connect with ring switch 390 The elastic slice 3542 of touching.When operating knob 354 rotates, the contact position of elastic slice 3542 and ring switch 390 changes, and realizes motor 320 The change of output torque, and then achieve the purpose that adjust 330 output torque of working shaft.

Operating knob 354 rotate when, it can be achieved that under the adjusting of the multiple gears of drill jig formula and screw batch mode multiple gears tune Section, can also realize the adjusting of multiple gears under impact wrench mode.

In embodiment shown in Figure 21 to Figure 26, when multiple functional modes of multi-functional drill 300 switch, by impact wrench mould When formula switches to continuous mode, it can be and first switch to drill jig formula, be also possible to first switch to screw batch mode.Pass through setting the One driver slot 355 and shape, the position of the second driver slot 356 etc., execute pattern switching according to scheduled logic.Below with reference to Attached drawing is further elaborated on the pattern switching under different order.

It is the schematic diagram of the first operation interface of multi-functional drill 300 with reference to Figure 31.Wherein, it is respectively as follows: punching from top to bottom Spanner mode is hit, there are 2 gears；Screw batch mode is equipped with 5 gears；1 gear is arranged in drill jig formula.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 drives in switching 353 rotation process of ring, has first stroke, second stroke, the in rotation direction Triple-travel and fourth stroke, 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 sequence isWherein, at operating knob 354 In first stroke range, the first clutch part 351 is separated with 342 phase of revolving part, without torsion between revolving part 342 and working shaft 330 Power transmitting, multi-functional drill 300 are in impact wrench mode, as shown in figure 32.At this point, the backing pin on the second push-pull rod 380 382 Except the second driver slot 356, the sliding pin 372 on the second push-pull rod 380 is then located at the first segment of the first driver slot 355 In 3551.When multiple gears are set under impact wrench mode, the defeated of motor 320 can be changed by operating the operating knob 354 Revolving speed out.

As shown in figure 33, when needing by impact wrench pattern switching to screw batch mode, then operating knob 354 is rotated, makes to grasp Make button 354 to turn within the scope of its second stroke, switches 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 Transmitting.Backing pin 382 and the relative position of switching ring 353 change.

When operating knob 354 is turned within the scope of its second stroke, it is set as screw batch mode.Operating knob 354 is continued to rotate, Operating knob 354 enters within the scope of its third trip, the position that can be contacted by changing elastic slice 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 set as and drill jig Output torque is different under formula.

Further, screw batch mode is divided into be set to multiple torsion regulation stalls more.It is arranged are as follows: in second stroke model If rotating operating knob 354 in enclosing, the position that changeable elastic slice 3542 is contacted with ring switch 390 is further varied multiple times 320 Output torque, 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 continued to rotate, operating knob 354 will enter within the scope of its fourth stroke.As shown in figure 35, backing pin 382 Limitation static side tooth 362 rotates after entering in the second driver slot 356 and being axially moved the second clutch part 363, clutch part 352 Position it is constant, still in first position, and then the axial impact of working shaft 330 is realized, to complete by drill jig formula to impact drill The switching of mode.

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

Under the first operation interface, it is to share one that the torsion under screw batch mode, which is adjusted and adjusted with the switching of each functional mode, Regulating element, operation interface are succinct.

Under aforesaid operations interface, operation operating knob 354 controls the output torque of motor and revolving speed is by electronically controlled Mode.In addition, operation operating knob 354 controls the output torque of motor and revolving speed is also possible to by way of Mechanical course.Example Such as, safety clutch is set, when the torque of transmitting is more than overload torque, power machine 320 and working shaft 330 in safety clutch Between torsion transmitting.

It is the schematic diagram of second of operation interface of multi-functional drill 300 with reference to Figure 36.Figure 37 to Figure 40 is illustrated second The pattern switching principle of kind operation interface.Similarly with the first operation interface: operating knob 354 drives switching ring 353 to rotate In the process, there is first stroke, second stroke, third trip and fourth stroke in rotation direction, in the different stroke stages, To realize different functional modes.First stroke corresponds to impact wrench mode, and second stroke corresponds to screw batch mode, third Stroke corresponds to drill jig formula, and fourth stroke corresponds to impact drill mode.

With the first operation interface the difference is that: each pattern switching sequence is Switch with functional mode each under the first operation interface suitable Sequence is different.If multi-functional drill 300 is in impact wrench mode at the beginning as a result, drill jig formula can be switched to, is then switched to Impact drill mode；Or drill jig formula is first switched to, then switch back into impact wrench mode, then switch to drill jig formula, it is then switched to Impact drill mode.In other words, compared with the first operation interface, the pattern switching under second of operation interface is equivalent to the first The execution sequence of each stroke is adjusted under operation interface.

In one embodiment, shown in Figure 36, since impact wrench mode is between drill jig formula and screw batch mode, accordingly The shape of the first driver slot of ground 355 also improves.Specifically, compared with the first operation interface, the first driver slot 355 at this time It is changed to: intermediate three-stage narrow, both ends are wide.Switching ring 353 is driven by operating knob 354 as a result, when rotating, and sliding pin 372 is the It is converted between the narrow/wide part of one driver slot 355, the first clutch part 351 is driven to axially move in the longitudinal direction.

In one embodiment, setting operation button 354 first carries out fourth stroke range, 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 limitation static side tooth 362 and rotates Position.First clutch part 351 is in the position for making that torsion transmitting is realized between revolving part 342 and working shaft 330.

When needing by impact drill pattern switching to drill jig formula, operating knob 354 drives the rotation of switching ring 353 to third trip model It encloses, the second clutch part 363 axially moves to the position that no longer limitation static side tooth 362 rotates, so that impact function fails, into brill Mode, 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 the rotation of switching ring 353 to first stroke range, as shown in figure 39, at sliding pin 372 In the intermediate narrower part to the first driver slot 355, the first clutch part 351, which axially moves to, at this time does not reconnect revolving part 342 With the position of working shaft 330, to switch into impact wrench mode.

Continue to make operating knob 354 to drive the rotation of switching ring 353 to second stroke range, the first driver slot 355 another Wider portion and sliding pin 372 cooperate, and as shown in figure 40, the first clutch part 351 is in again makes revolving part 342 and working shaft The position that torsion transmitting is realized between 330, to switch into screw batch mode.It needs to adjust in screwdriver mode tuning torque When, continue to rotate 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 set as different from output torque under drill jig formula.And further, screw batch mode is divided into be set to has multiple torsion to adjust shelves more Position.It is arranged are as follows: if rotating operating knob 354 within the scope of second stroke, what changeable elastic slice 3542 was contacted with ring switch 390 Position, is further varied multiple times 320 output torque, to realize that the torsion under screw batch mode is adjusted.Therefore, second stroke When with 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 mode, operating knob 354 can also be operated to vary 320 it is defeated Revolving speed out.Also, it is also possible to the position contacted by change elastic slice 3542 with ring switch 390 to realize.

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

Under second of operation interface, it is also to share one that the torsion under screw batch mode, which is adjusted and adjusted with the switching of each functional mode, A regulating element, operation interface are succinct.

It is the schematic diagram of the third operation interface of multi-functional drill 300 with reference to Figure 41.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 operation Part 3543 is mode selector button, to realize impact drill mode, drill jig formula, impact wrench mode, between screw batch mode Switching；Second operating parts 3544 is torsion switch bar, to realize the adjusting of multiple gears under screw batch mode.

Join Figure 42 to Figure 45, operates the sequence of pattern switching performed by the first operating parts 3543 and the complete phase of Figure 37 to 40 Together.With second of operation interface the difference is that: need in screwdriver mode tuning torque, be not to continue with rotation first Operating parts 3543, but the second operating parts 3544 of operation is changed to realize.In other words, the first operating parts 3543 is to drive switching 353 movements, carry out the switching of first stroke, second stroke, third trip and fourth stroke.Second operating parts 3544 is then special to be used To carry out torsion adjusting under screw batch mode.

The advantages of two operating parts are arranged is: when needing by screwdriver pattern switching is other modes, the first operation The distance that part 3543 needs to rotate is fewer.For example, screwdriver pattern switching is impact drill mode, with second of operation interface phase Than stroke required for the first operating parts 3543, the first operating parts 3543 when as eliminating torsion adjusting under screw batch mode Less distance can be rotated, is improved efficiency.

Join Figure 46 to Figure 50, is 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 mode is identical with the pattern switching sequence under second and the third operation interface, wherein with second Operation interface the difference is that: torsion under screw batch mode is adjusted to be adjusted using autoelectrinic torsion, does not need to take Rotate the mode of operating knob 354.With the third operation interface the difference is that: torsion under screw batch mode, which controls, to be used Autoelectrinic torsion is adjusted, and does not need the mode for taking the second operating parts 3544 of rotation.

The principle that autoelectrinic torsion is adjusted are as follows: as load increases, the electric current of motor increases, revolving speed decline, setting electricity Stream threshold values then controls motor stopping when electric current reaches reservation threshold, to improve the accuracy of torque adjusting.

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

Further, after setting the first current threshold, it is set lower than the second current threshold of first current threshold, When current of electric reaches second current threshold, the revolving speed of controller control motor is maintained at revolving speed predetermined value N1.Revolving speed Predetermined value N1 is lower than motor speed when general work state, and motor can rapidly be made instead so in subsequent control It answers.For multi-functional drill 100, with impact wrench mode, drill jig formula, screw batch mode, operation interface is also unlimited Shown in Fig. 2, can also correspondingly there are other pattern switching sequences.

As shown in figure 51, multi-functional drill 100 can also have second of operation interface.Operating parts 164 is to cover in switching ring Knob outside 163 drives switching ring 163 to rotate by rotation.It is also to be realized by rotation operating parts 164 that torsion, which is adjusted, It is identical as 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 cover in switching ring Knob outside 163 drives switching ring 163 to rotate by rotation.Operating parts 164 further comprises the first operating parts 1642, is used Switched with implementation pattern；And second operating parts 1644, to realize that the torsion under screw batch mode is adjusted.It is operated using two Part, it is possible to reduce the circle number rotated when switching back into impact wrench mode.And pattern switching sequence is then are as follows: impact wrench mode, 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 mode with the third operation interface Transfer sequence is identical, is adjusted the difference is that torsion is adjusted using electronic torsion, and when load increases, the electric current of motor is increased to When reservation threshold, motor stopping is controlled.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies 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, all should be considered as described in this specification.

The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (11)

1. a kind of multi-functional drill characterized by comprising

Shell；

Motor, to generate power；

Working shaft, to drive work head；

Oil shock unit, to make working shaft generate intermittent rotation, including the revolving part being set on working shaft, revolving part It is interior be equipped be stored with hydraulic oil enclosure space, further include that the work can be assembled in radial motion in the enclosure space Piston piece in the guide groove of axis；

Changeover module, including clutch part, wherein the clutch part can be converted between the first location and the second location, it is described from At the first position, the clutch part connects the working shaft and revolving part to component, and band is started building when the revolving part rotates Make axis continuous rotation together；The clutch part in the second position, in clutch part and the working shaft and revolving part extremely A few disengagement, the revolving part makes working shaft generate intermittent rotation when rotating, wherein the clutch position position of the clutch part In side of the oil shock unit far from motor.

2. multi-functional drill according to claim 1, which is characterized in that the enclosure space includes that can generate high oil pressure High-pressure chamber, the high-pressure chamber is between the working shaft and the piston piece.

3. multi-functional drill according to claim 2, which is characterized in that the one end of the working shaft is equipped with axial hole, separately For driving the work head, the axial hole is built-in with the camshaft for following the revolving part to rotate together, the work for one end Make to be additionally provided with the radial passage for accommodating the piston piece on the outer surface of axis, 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 the piston piece radially towards the pushing portion of the camshaft motion；

When the pushing portion does not abut radially with the piston piece, the axial hole is connected to enclosure space, in enclosure space Hydraulic oil can enter the axial hole；The pushing portion abuts residence radially when stating piston piece, and the camshaft completely cuts off institute Axial hole and enclosure space are stated, and the ball blocks the radial hole, the hydraulic oil pushes piston piece holding with described Portion abuts state radially；

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

4. multi-functional drill according to claim 3, which is characterized 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 is abutted with contact surface radially until bearing surface.

5. multi-functional drill according to claim 1, which is characterized in that the enclosure space includes that can generate high oil pressure High-pressure chamber, the high-pressure chamber are formed between the revolving part, the working shaft and the piston piece.

6. multi-functional drill according to claim 5, which is characterized in that the inner wall of the revolving part is equipped with several sealings, The surface of the working shaft is equipped with radial part, in the revolving part rotation process, is formed when sealing is contacted with radial part The high-pressure chamber.

7. multi-functional drill according to claim 6, which is characterized in that the inner wall of the revolving part is equipped in a circumferential direction Four sealings, two radial parts and two piston pieces, be provided between two piston pieces elastic component to Offer makes the inner wall of piston piece and revolving part keep elastic force in sealing contact, and the radial part and the piston piece are in working shaft Circumferencial direction on be staggered；

In revolving part rotation process, when the sealing and radial part contact, the revolving part makes the indoor high pressure oil of high pressure chest Push piston piece radial motion, piston piece radial motion when impact the working shaft in a circumferential direction.

8. multi-functional drill according to claim 1, which is characterized in that described when the clutch part is by being in first position The output torque that operating parts can be operated and the control circuit is promoted to change the motor.

9. multi-functional drill according to claim 1, which is characterized in that when the clutch part is in the second position, the behaviour Workpiece can be operated the output revolving speed of the motor.

10. multi-functional drill according to claim 1, which is characterized in that the multi-functional drill further includes driving the clutch The operating parts of part, the operating parts include the first operating parts and the second operating parts, wherein first operating parts to drive from Component is converted between the first location and the second location, and second operating parts is to when clutch is in the first position The output torque of the motor described in operation change.

11. multi-functional drill according to claim 1, which is characterized in that the motor shaft of the motor is subtracted by one-stage gear Speed system drives the revolving part rotation.