CN104874834B - Impact drill - Google Patents
Impact drill Download PDFInfo
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- CN104874834B CN104874834B CN201510091522.1A CN201510091522A CN104874834B CN 104874834 B CN104874834 B CN 104874834B CN 201510091522 A CN201510091522 A CN 201510091522A CN 104874834 B CN104874834 B CN 104874834B
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- Prior art keywords
- impact drill
- regulating element
- tooth
- main shaft
- static side
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D16/006—Mode changers; Mechanisms connected thereto
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Drilling And Boring (AREA)
Abstract
The present invention relates to a kind of impact drills, including housing, the main shaft being arranged in housing, gear mechanism, it is fixed on the moved end tooth that can be moved on the main shaft and with the main shaft, the static side tooth that can be meshed with the moved end tooth, impact drill further includes the function changing-over mechanism for may be selected to perform percussion action, function changing-over mechanism includes the regulating element being rotatably arranged on housing, it and can be along main shaft axial movement but non-rotatable clutch part relative to housing, regulating element is used to adjust the output torque of main shaft and be operatively controlled the clutch part and move axially to limit the static side tooth spiral to turn so as to selectively be combined between clutch part and the static side tooth.Above-mentioned impact drill, after clutch part axial movement is combined with static side tooth, impact drill can enter conflicting model, clutch part is disposed radially within the periphery of static side tooth, its space in the axial direction of main shaft is overlapped with dynamic and static end tooth, and the axial dimension for making impact drill is relatively short, compact-sized.
Description
Technical field
The present invention relates to impact drill, more particularly to a kind of impact drill with impact function switching construction.
Background technology
Traditional impact drill generally includes main shaft, is fixed on main shaft and can be with moved end tooth that main shaft moves together and quiet
End tooth.The end face of moved end tooth and static side tooth is respectively arranged with waveform fluted disc.When moved end tooth and static side tooth engagement, the production of moved end tooth
Raw certain percussion action, impact drill are in conflicting model；When moved end tooth is not engaged with static side tooth, impact drill is in drilling mould
Formula or torsion shaping modes.Shift fork or rotating cam ring are usually provided with to detach moved end tooth and static side tooth, this mode, due to
Element is increased on the axial direction of main shaft to realize power and energy so that the axial dimension of impact drill is larger.
Invention content
Based on this, it is necessary to provide a kind of impact drill having compared with short axial size.
A kind of impact drill, including housing, the main shaft being arranged in housing, to the main shaft passing power gear mechanism,
The moved end tooth that can be moved on the main shaft and with the main shaft, the static side tooth that can be meshed with the moved end tooth are fixed on,
Impact drill further includes the function changing-over mechanism for may be selected to perform percussion action, and the function changing-over mechanism includes rotationally setting
It the regulating element that is placed on housing and can be moved axially relative to housing along main shaft but non-rotatable clutch part, the tune
Section element is used to adjust the output torque of main shaft and be operatively controlled the clutch part to move axially so that the clutch part
It is selectively combined between the static side tooth and is turned with limiting the static side tooth spiral.
Static side tooth is loosely sleeved on the main shaft in one of the embodiments, and clutch part is sleeved on the outer of static side tooth
Portion.Its circumferencial direction of clutch part upper edge is equipped with multiple grooves, and multiple protrusions are correspondingly provided on the static side tooth.
Regulating element can be successively in first position, the second position, the third place with respect to housing in one of the embodiments,
Between reciprocating rotation；During first position, the main shaft sustainably exports rotation and impact, and impact drill is in conflicting model；Second
Position, the main shaft sustainably export rotation, and impact drill is in drill mode；The third place, the main shaft can be according to adjustings
The preset value output torque of element, impact drill are in screw batch mode.When regulating element is in first position, clutch part and static side
Tooth combines, and when the regulating element is in the second position, clutch part is disengaged with static side tooth.
Function changing-over mechanism further includes setting on the housing and can draw in axial sliding in one of the embodiments,
Bar, the pull rod are arranged on the outside of the clutch part and are fixed together with the clutch part.
The pull rod is connect with clutch part by wire loop in one of the embodiments, and the wire loop relies on elastic force
It is fixed on the pull rod and wraps pull rod, the wire loop has across pull rod and fixed to the end on the clutch part
Portion.
The main shaft is equipped with fore bearing and rear bearing, the moved end tooth and static side tooth position in one of the embodiments,
Between the fore bearing and rear bearing, wherein the moved end tooth is close to the fore bearing, the clutch part and the fore bearing
Between be additionally provided with the axial resetting spring for oppressing the clutch part；The impact drill further includes the tune being sleeved on the procapsid
Element is saved, the pull rod is equipped with protrusion, and the inner wall of the regulating element is equipped with for the groove projected through, described recessed
Cam surface is formed between the side of slot and the end face of groove, the end face of the groove is also formed with the first confined planes.
The impact drill, which further includes, in one of the embodiments, is fixed on the fore bearing and by the regulating element
Pressing plate on the housing is limited, the limit protrusion of the restricted regulating element rotation angle, institute are set on the pressing plate
It states and stop section is correspondingly provided on regulating element.
The gear mechanism includes can be rotatably set in ring gear and the institute in housing in one of the embodiments,
The planetary gear train that ring gear engagement is used for imparting power to main shaft is stated, is additionally provided between the regulating element and the procapsid
The screw lid being threadedly coupled with the regulating element, wherein, the end face of the ring gear is equipped with end tooth, the screw lid with it is described
Compression spring, support column and gasket are equipped between end tooth, the support column passes through the housing to be in contact with the end tooth, the pressure
Spring bears against the screw lid and passes through the gasket and is pressed on the support column.
The groove is included on the inner wall of regulating element circumferentially symmetrically arranged first in one of the embodiments,
Groove and the second groove, the protrusion include the first protrusion corresponding with the first groove and the second groove and the second protrusion respectively,
Size of wherein first protrusion on regulating element circumferencial direction is more than size of second protrusion on regulating element circumferencial direction,
First protrusion is less than size of second protrusion in regulating element radially in the size of regulating element radially；First groove is being adjusted
The size saved on element circumferencial direction is more than size of second groove on regulating element circumferencial direction；Regulating element is recessed in first
The second confined planes are additionally provided on the outside of slot, the shielding plate that part covers the second groove is provided with above the second groove.
In one of the embodiments, the clutch part relative to housing towards moved end tooth direction move axially when, it is described
Clutch part can realize disengaging with static side tooth.
The moved end tooth is always maintained at meshing state with static side tooth in one of the embodiments,；Or the moved end tooth with
Cut spring is additionally provided between static side tooth, when the clutch part is combined with the static side tooth but the impact drill dallies, separation
Spring makes moved end tooth be detached with static side tooth.
Above-mentioned impact drill, after clutch part axial movement is combined with static side tooth, impact drill can enter conflicting model, clutch part diameter
The periphery of static side tooth is arranged on to ground, the space in the axial direction of main shaft is overlapped with dynamic and static end tooth, makes the axial ruler of impact drill
It is very little relatively short, it is compact-sized.
Description of the drawings
Fig. 1 is the explosive view of the impact drill of embodiment one；
Fig. 2 is the schematic diagram of ring gear in Fig. 1；
Fig. 3 is that the impact drill of embodiment one is in the constructed profile of screw batch mode；
Fig. 4 is that the impact drill of embodiment one is in the constructed profile of screw batch mode, it is shown that screw lid and ring gear
Between fit structure；
Fig. 5 is the schematic diagram of torque cover in Fig. 1；
Fig. 6 is the schematic diagram of another angle of torque cover shown in fig. 5；
Fig. 7 is pull rod and the schematic diagram of torque cover mated condition；
Fig. 8 is the pressing plate of impact drill of embodiment one and the matching relationship schematic diagram of torque cover；
Fig. 9 is that the impact drill of embodiment one is in the constructed profile of drill mode；
Figure 10 is that the impact drill of embodiment one is in the constructed profile of conflicting model；
Figure 11 is in schematic side view during conflicting model for the impact drill of embodiment one；
Figure 12 is the constructed profile of the impact drill of embodiment two.
Related elements reference numeral in figure is as follows：
100th, impact drill 110, housing 120, main shaft
122nd, fore bearing 124, rear bearing 130, gear mechanism
132nd, planetary gear train 1322, planetary gear 1324, planet carrier
134th, ring gear 1342, end tooth 1344, support column
1346th, gasket 1348, compression spring 140, screw lid
150th, torque cover 152, the first groove 1522, cam surface
154th, the second groove 156, the first confined planes 157, the second confined planes
158th, shielding plate 159, stop section 160, moved end tooth
170th, static side tooth 182, clutch part 183, pull rod
1832nd, annulus 1834, the 1836, first protrusion of side arm
1837th, the second protrusion 184, wire loop 1842, end
185th, resetting spring 190, pressing plate 192, limit protrusion
200th, impact drill 210, housing 220, main shaft
260th, moved end tooth 270, static side tooth 282, clutch part
283rd, pull rod 290, cut spring
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more saturating
It is thorough 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 elements 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, then there is no intermediary elements.Term as used herein " vertically ", " horizontal ", "left", "right" and similar statement
For illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " including one or more phases
The arbitrary and all combination of the Listed Items of pass.
Below in conjunction with the accompanying drawings, illustrate the better embodiment of impact drill.
Embodiment one
It please refers to Fig.1 to Figure 11, the present invention provides a kind of impact drills 100 of three functions, can be by operatively in screw
It criticizes (or torque adjusting), drilling, impact once working for Three models.Impact drill 100 includes housing 110, is arranged on housing
Main shaft 120 in 110, the gear mechanism 130 to 120 passing power of main shaft.The front end that main shaft 120 is located at impact drill 100 is used for
Drive work head work (not shown).After housing 110 and motor mating (not shown), gear mechanism 130 is by the output of motor
The higher rotation speed of axis passes to main shaft 120 again after reducing.
It please refers to Fig.1 and Fig. 3, gear mechanism 130 includes planetary gear train 132 and can be rotatably set in housing 110
Ring gear 134.Planetary gear train 132 includes multigroup planetary gear set.Aforementioned ring gear 134 is arranged on the planetary gear set of final stage
It place and is meshed with the planetary gear 1322 in the planetary gear set of final stage.Planet carrier 1324 in the planetary gear set of final stage then with
Main shaft 120 is connected the power of the output shaft of motor passing to main shaft 120.
It please refers to Fig.3, the outside of housing 110 is cased with screw lid 140.The outside of screw lid 140 is cased with torque cover 150.It turns round
Power cover 150 is provided with internal thread, which is coupled with the external screw thread outside screw lid 140, makes torque cover 150 and screw lid
Reach spiral connection between 140.Screw lid 140 can only be moved axially by the limitation of housing 110.Therefore, when torque cover 150 rotates
When, screw lid 140 will move axially.Operation torsion cover 150 moves axially screw lid 140, and the purpose is to corrective actions
Pressure on 134 end face of ring gear, enables ring gear 134 that resistance to be overcome to rotate, and impact drill 100 is made to be in spiral batch mould
Formula；Or make ring gear 134 that cannot rotate, impact drill 100 is made to be in drill mode or conflicting model.
The form of wherein torque cover 150 is not limited to the present embodiment, and those skilled in the art, which are contemplated that, is designed into phase
To the adjusting knob of housing movement, this essence is to provide the regulating element of operator's manual operation, can also use other adjustings
Element is replaced.
The regulating element of the present embodiment is rotated around 120 axis of main shaft relative to housing 110 and is set, and can successively first, the
2nd, reciprocating rotation between the third place corresponds to impact, drilling and screwdriver (torque adjusting) these three different Working moulds respectively
Formula.Under conflicting model, main shaft 120 exports lasting rotation and impact；Under drill-through pattern, main shaft 120 exports lasting rotation；Spiral shell
Under silk batch mode, main shaft 120 is according to the preset value output torque of regulating element.
It please refers to Fig.3 and Fig. 4, in the present invention, end tooth 1342 is provided on the end face of ring gear 134.End tooth 1342 and spiral shell
Support column 1344, gasket 1346 and compression spring 1348 are disposed between spiral cover 140, wherein support column 1344 passes through housing 110
To be contacted with end tooth 1342, for 1348 one end pressure-bearing of compression spring in screw lid 140, the other end is then pressed in support column by gasket 1346
On 1344.In the present invention, 6 support columns 1344 are provided with, are evenly arranged along the circumferencial direction of ring gear 134, accordingly, compression spring
1348 are provided with 6, in this way so that screw lid 140 gives ring gear 134 pressure when moving axially compares in a circumferential direction
Uniformly.
When torque cover 150 rotates, screw lid 140 moves axially under the limitation of housing 110.Screw lid 140 makees axis
To during movement, screw lid 140 is compressed axially the compression spring 1348 that aforementioned 6 are evenly arranged, and compression spring 1348 is then resisted against support
On the gasket 1346 of 1344 end face of column, gasket 1346 then pushes down 6 support columns being evenly arranged 1344.Support column 1344 acts on
On end tooth 1342 on 134 end face of ring gear.The decrement of compression spring 1348 is bigger, and the pressure that compression spring 1348 can be provided is bigger,
The pressure of support column 1344 is bigger, needs the torque overcome bigger when the end tooth 1342 on ring gear 134 rotates, is transmitted to
The torque of main shaft 120 can be bigger.When ring gear 134 is killed completely, then ring gear 134 cannot rotate, at this point, ring gear
134 be the equal of a part for housing 110, and peak torque can be output on main shaft 120 by the planetary gear set of final stage.
Please also refer to Fig. 1, Fig. 3, Fig. 4, Fig. 9 and Figure 10, the beater mechanism of impact drill 100 includes moved end tooth 160 and quiet
End tooth 170.The fore bearing 122 being supported in housing 110 and rear bearing 124 are provided on main shaft 120.Main shaft 120 and two axis
The inner ring held is clearance fit, and main shaft 120 is allow to slide axially.Moved end tooth 160 and static side tooth 170 be located at fore bearing 122 with
Afterwards between bearing 124, wherein moved end tooth 160 is close to fore bearing 122, and static side tooth 170 is close to rear bearing 124.Moved end tooth 160 and master
It 120 secure fit of axis and can be moved with main shaft 120.Static side tooth 170 be then loosely sleeved on main shaft 120 and with moved end tooth
160 keep meshing state.
When static side tooth 170 can rotate, moved end tooth 160 rotates together with static side tooth 170, and impact drill 100 is in screw
Batch or drill mode.Moved end tooth 160 and the teeth portion faying face of static side tooth 170 are an inclined-planes, therefore when static side tooth 170 is limited
When can not rotate, main shaft 120 drives moved end tooth 160 to rotate, and under the action of inclined-plane, will generate an axis along main shaft 120
To thrust, which makes moved end tooth 160 be detached with static side tooth 170, and main shaft 120 is driven to move along its axis.In main shaft 120
In the case of making high speed rotation, axial impact that main shaft 120 will generate certain frequency makes impact drill 100 be in conflicting model.
Impact drill 100, which is additionally provided with, makes moved end tooth 160 may be selected to perform the function switch machine of percussion action with static side tooth 170
Structure.Function changing-over mechanism includes being sleeved on clutch part 182, pull rod 183, connecting rod 183 and the clutch part outside static side tooth 170
182 wire loop 184 and the resetting spring 185 being arranged between fore bearing 122 and clutch part 182.Wherein, clutch part 182 with
Static side tooth 170 is least partially overlapped in the axial direction of main shaft 120.
Clutch part 182 is limited by housing 110, can be moved axially relative to housing 110 but non-rotatable.Clutch part
182 can selectively be combined with static side tooth 170 under the control of pull rod 183 with limit static side tooth 170 rotate or with static side tooth
170 detach to release the limitation for rotating static side tooth 170.Its circumferencial direction of 182 upper edge of clutch part may be provided with multiple grooves, this
It is 4 in invention.The end of static side tooth 170 in the radial direction thereof is then provided with equal number of protrusion.When protrusion coordinates with groove,
Static side tooth 170 is restricted from enough rotations.After protrusion and groove axial separation, static side tooth 170 can rotate.Certainly, protrusion with
The position of groove can be interchanged.
It please refers to Fig.1 and Fig. 3, pull rod 183 includes the annulus 1832 being sleeved on housing 110.It is symmetrical on annulus 1832
There are two side arms 1834 for setting.Wire loop 184 is fixed on using own resilient on pull rod 183, while is wrapped on pull rod 183,
Pull rod 183 and glade plane space of the housing 110 in main shaft 120 radially can be maintained in this way.There are two ends for the setting of wire loop 184
1842, two ends 1842 are each passed through the sliding slot (not shown) on pull rod 183 and housing 110, are then attached to clutch part 182
In the hole of both sides.In this way, pull rod 183, in the axial movement of 110 upper edge main shaft 120 of housing, pull rod 183 can pass through wire loop
184 drive clutch parts 182 move axially.
It please refers to Fig.3, Fig. 9 and Figure 10, resetting spring 185 are arranged between fore bearing 122 and clutch part 182.Reset bullet
Spring 185 is constantly in compressive state, oppresses clutch part 182 for axial, clutch part 182 is enable to be matched with static side tooth 170,
It is rotated with limiting static side tooth 170.When being in screwdriver or drill mode due to impact drill 100, clutch part 182 and static side tooth are needed
170 be phase separation, therefore, sharp in of the invention in order to which clutch part 182 is enable to be maintained at the state detached with static side tooth 170
With torque cover 150 come limit pull rod 183, make clutch part 182 be maintained under the elastic force effect of resetting spring 185 with
The state that static side tooth 170 detaches, discharges pull rod 183 by rotary torsion cover 150, pull rod 183 is made no longer to limit clutch part 182
Axial movement, and then clutch part 182 can the elastic force of resetting spring 185 act on be moved to what is coordinated with static side tooth 170
Position.
Fig. 5 to Fig. 7 is please referred to, the inner wall of torque cover 150 is symmetrically arranged with the first groove 152 and second along its circumferencial direction
Groove 154.First protrusion 1836 corresponding with the first groove 152 is respectively equipped on two side arms 1834 of pull rod 183 and with the
Two grooves, 154 corresponding second protrusion 1837.Fig. 5 is please referred to, there are one convex for formation between the side and end face of the first groove 152
Wheel face 1522 is similarly formed a cam surface (not shown) between the side and end face of second groove 154.First groove, 152 He
The end face of second groove 154 forms the first confined planes 156 of an arc.Due to the reaction force of resetting spring 185, is utilized
One confined planes 156 can resist the first protrusion 1836 and the second protrusion 1837.
Impact drill 100 can gradually increase the pressure to ring gear 134, make impact drill in use, rotary torsion cover 150
100 convert between screw batch mode-drill mode-conflicting model.Therefore, it functionally requires, torque cover 150 is not rotating
Before in place (ring gear 134 is not killed, just kill ring gear 134 after being set as 336 degree of rotation in the present invention), torsion
Cover 150 cannot release the axial limiting to pull rod 183.Since the first groove 152 and the second groove 154 are symmetrical arranged, torsion
Cover 150 just will appear the first protrusion 1836 and the second protrusion 1837 and the first groove 152 and second during rotateing in place
The situation that 154 position of groove coincides, can if this when of the first protrusion 1836 and the second protrusion 1837 are fallen into groove
It causes to enter conflicting model in advance.
In order to solve above-mentioned contradiction, in the present embodiment, make size of first protrusion 1836 on 150 circumferencial direction of torque cover
More than size of second protrusion 1837 on 150 circumferencial direction of torque cover, ruler of first protrusion 1836 in torque cover 150 radially
Very little to be then less than size of second protrusion 1837 in torque cover 150 radially, popular point says that the first protrusion 1836 is wide and short, second
Protrusion 1837 is thin and grows.Size of first groove 152 on 150 circumferencial direction of torque cover is more than the second groove 154 in torque cover
Size on 150 circumferencial directions, meanwhile, torque cover 150 is additionally provided with the second confined planes 157 in 152 outside of the first groove, in second
154 top of groove is provided with the shielding plate 158 that part covers the second groove 154.
In 150 rotation process of torque cover, when the first wide and short protrusion 1836 is turned at the second groove 154, due to
The presence of shielding plate 158, the first protrusion 1836 will not fall into the second groove 154, and thin and length the second protrusion 1837 also may be used
To be rotated further along the second confined planes 157, will not fall into the first groove 152.Torque cover 150 is rotated further, first is convex
It plays 1836 to turn at the first groove 152, the first protrusion 1836 falls into the first groove 152, the second protrusion via cam surface 1522
1837 turn at the second groove 154 and equally fall into the second groove 154 via cam surface, and entire pull rod 183 can be detached from torque cover
150 axial limitation, then clutch part 182 can be moved axially and be combined with static side tooth 170, and impact drill 100 will enter conflicting model.
It please refers to Fig.3 and Fig. 8, pressing plate 190 is further fixed on fore bearing 122.Pressing plate 190 limits torque cover 150 in shell
On body 110.In addition, being provided with limit protrusion 192 on pressing plate 190, and stop section 159 is correspondingly arranged in torque cover 150, turned round in this way
The maximum rotation angle of power cover 150 is limited.
The transfer process of three kinds of functions of impact drill 100 is briefly described below in conjunction with the accompanying drawings.
It please refers to Fig.3, and when torque cover 150 rotates in certain angle (it is 0~252 degree in the present invention, it can be according to reality
Demand is set), the axial movement of screw lid 140 simultaneously then by gasket 1346, support column 1344 made by compression press spring 1348, compression spring 1348
For end tooth 1342.In this rotation angle, the distance of screw lid 140 to gasket 1346 is more than the end tooth on ring gear 134
1342 height, therefore always there are one the torques of enough size to overcome and produced between end tooth 1342 and support column 1344 for ring gear 134
Raw resistance generates support column 1344 and moves axially and be detached from ring gear 134, and such ring gear 134 can rotate.This rotation
In gyration, the first protrusion 1836, the second protrusion 1837 on pull rod 183 are to be against torsion under the action of resetting spring 185
On first confined planes 156 of cover 150, at this point, pull rod 183 drives clutch part 182 to move axially to be detached from by wire loop 184
The position of static side tooth 170, static side tooth 170 are freely rotatable.When impact drill 100 is operated, moved end tooth 160 on main shaft 120 with
The axial engagement of static side tooth 170 rotates together.In the above process, impact drill 100 is in screw batch mode, and can pass through adjusting
The rotation angle of torque cover 150 adjusts the output torque of main shaft 120.In addition, it chats above, the further tune of screw batch mode
During section, pull rod 183 is limited without departing from the axial direction of torque cover 150, and impact drill 100 is unlikely to unintentionally enter conflicting model.
Fig. 9 is please referred to, when torque cover 150 is from when state continues to rotate in the same direction shown in Fig. 3, screw lid 140 arrives pad
The distance of piece 1346 continues to reduce, when the distance of screw lid 140 to gasket 1346 is decreased to less than the end tooth on ring gear 134
During 1342 height, it is equivalent to support column 1344 at this time and is directly withstood by screw lid 140, is equivalent to and acts on support column 1344
Power for infinity.At this point, end tooth 1342 cannot open-top support column 1344, ring gear 134 cannot be rotated by locked, be equivalent in
Gear ring 134 is fixed on housing 110.During this, pull rod 183 is resisted always by torque cover 150, and pull rod 183 passes through wire loop
184 continue the position that clutch part 182 is driven to move axially to be detached from static side tooth 170, and static side tooth 170 is freely rotatable.It is interior at this time
Gear ring 134 is fixed, and impact drill 100 is in drill mode, and the torque that main shaft 120 exports is maximum, can be performed for user
The operation of drilling.
0 and Figure 11 are please referred to Fig.1, continues rotary torsion cover 150, screw lid 140 continues to move axially, and screw lid 140 arrives
The distance of gasket 1346 continues to reduce.When 150 terminating rotation of torque cover (for example, being rotated to after rotating 336 degree in the present invention
Position), the first protrusion 1836 is turned at the first groove 152, and the second protrusion 1837 is turned at the second groove 154, is resetting bullet
Under the reaction force of spring 185, entire pull rod 183 can be detached from the axial limitation of torque cover 150；Then, resetting spring 185 push from
Component 182, wire loop 184 and pull rod 183 are moved along 124 direction of axially rearward facing bearing of main shaft 120.Clutch part 182 is pushed
Reach male-female engagement with static side tooth 170 afterwards.Due to clutch part 182 by housing 110 limitation can not rotate, static side tooth 170
Also it is limited, it is impossible to rotate, main shaft 120 drives moved end tooth 160 to rotate, and the combination between moved end tooth 160 and static side tooth 170 is oblique
Under the action of face, the axial thrust along main shaft 120 will be generated, which makes moved end tooth 160 be detached with static side tooth 170,
And main shaft 120 is driven to move along its axis.Make high speed rotation, the axis that main shaft 120 will generate certain frequency in main shaft 120
To impact, impact drill 100 is made to be in conflicting model.
When torque cover 150 rotates backward, the conversion of state is with the above process just on the contrary, repeating no more.
In the present invention, limit static side tooth 170 using clutch part 182 and rotate, then reach and impact drill 100 is switched to impact
The purpose of pattern, clutch part 182 are arranged on outside static side tooth 170, with moved end tooth 160, static side tooth 170 in 120 axial direction of main shaft
Space overlap, therefore, clutch part 182 is not take up additional axial space；When switching to conflicting model, moved end tooth 160, static side
Tooth 170 does not need to detach, therefore also without separated space is reserved in axial direction, the axial dimension for making impact drill 100 is smaller, knot
Structure is compact.
In addition, in the present invention, clutch part 182 relative to housing 110 towards 160 direction of moved end tooth move axially when, clutch
Part 182 is detached from static side tooth 170；Clutch part 182 relative to housing 110 along when being moved far from 160 direction of moved end tooth, clutch part
182 can be combined together with static side tooth 170, therefore the axial movement of clutch part 182 rotates or release rotation to limit static side tooth 170
When, since the axial space that clutch part 182 itself occupies is small, axial movement can be accomplished completely in the sky of above-mentioned overlapping
Interior progress.Therefore, additional axial space is also not take up when clutch part 182 moves axially, makes the axial dimension of impact drill 100
It is smaller, it is compact-sized.
It is also pointed out that it may be set to be：Clutch part 182 is axial towards 160 direction of moved end tooth relative to housing 110
When mobile, clutch part 182 is combined with static side tooth 170, and clutch part 182 is moved relative to housing 110 along far from 154 direction of the second groove
When dynamic, clutch part 182 is detached from static side tooth 170.This mode, clutch part 182 is mainly axial empty occupied by static side tooth 170
Between on moved, can equally make the axial dimension of impact drill 100 smaller, it is compact-sized.
Embodiment two
Figure 12 is second embodiment of the impact drill of the present invention, essentially identical with embodiment one.The difference lies in：It is real
It applies in example two, wire loop 184 is eliminated in impact drill 200, pull rod 283 includes independent two parts, is directly anchored to shell respectively
In sliding slot on body 210, and 282 both sides of clutch part are connected to, can equally realize and control 282 axis of clutch part using pull rod 283
To mobile purpose.
In addition, in embodiment two, cut spring 290 is also increased between moved end tooth 260 and static side tooth 270.Embodiment
In one, when impact drill 100 is set in conflicting model, since dynamic and static end tooth engages always, when 10 no-load running of impact drill, also has
The action of impact has the impulsive sound of very big dynamic and static end tooth.And in embodiment two, separation bullet is increased in dynamic and static end tooth
Spring 290, when impact drill 200 is set in conflicting model, during 200 no-load running of impact drill, dynamic and static end tooth does not combine, not dynamic and static
The impulsive sound of end tooth；Only at work, main shaft 220 is driven moved end tooth 260 to overcome separation bullet to impact drill 200 by axial compressive force
The resilient rear-moving of spring 290 moves, and combines dynamic and static end tooth, just there is the action of impact at this time.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (13)
1. a kind of impact drill, including housing, the main shaft being arranged in housing, the gear mechanism, solid to the main shaft passing power
The moved end tooth that can be moved on the main shaft and with the main shaft, the static side tooth that can be meshed with the moved end tooth are scheduled on,
It is characterized in that, the impact drill further includes to may be selected to make the function changing-over mechanism that main shaft performs percussion action, the function
Switching mechanism includes being rotatably arranged in regulating element on housing and can be moved axially relative to housing along main shaft but can not
The clutch part of rotation, the regulating element are used to adjust the output torque of main shaft and are operatively controlled the clutch part axial direction
It is mobile to be turned so as to selectively be combined between the clutch part and the static side tooth with limiting the static side tooth spiral.
2. impact drill according to claim 1, which is characterized in that the static side tooth is arranged on the main shaft, it is described from
Component is sleeved on the outside of static side tooth.
3. impact drill according to claim 1, which is characterized in that the regulating element can be successively at first with respect to housing
Put, the second position, reciprocating rotation between the third place, during first position, the impact drill is in conflicting model, the second position, institute
It states impact drill and is in drill mode, the third place, the impact drill is in torque shaping modes.
4. impact drill according to claim 3, which is characterized in that when the regulating element is in first position, clutch part
It is combined with static side tooth, when the regulating element is in the second position, clutch part is disengaged with static side tooth.
5. impact drill according to claim 4, which is characterized in that fore bearing is provided on the main shaft, the function is cut
Converting mechanism further includes the pull rod being fixedly connected with the clutch part and is set between the fore bearing and clutch and axially presses
Compel the elastic component of the clutch part, regulating element turns to the second position by first position, and regulating element drives pull rod close to moved end
Tooth moves axially, until clutch is made to be disengaged with static side tooth so that static side tooth spiral to be allowed to turn；Regulating element turns to first by the second position
Position, the elastic component driving clutch are moved axially far from moved end tooth, until making clutch with static side tooth engagement to limit static side
Tooth spiral turns.
6. impact drill according to claim 5, which is characterized in that the pull rod is equipped with protrusion, the regulating element
Inner wall is equipped with for the groove projected through, and cam surface, institute are formed between the side of the groove and the end face of groove
The end face for stating groove is also formed with the first confined planes；Regulating element turns to the second position by first position, and the protrusion is by described
Groove is moved to the first confined planes along cam surface, and regulating element turns to first position by the second position, and the protrusion is by the first limit
Plane slips into the groove through cam surface.
7. impact drill according to claim 5, which is characterized in that the pull rod be arranged on the outside of the clutch part and with
Clutch part is connected by wire loop, and the wire loop is fixed on the pull rod by elastic force and wraps pull rod, the steel wire
Circle is with across pull rod and fixed to the end on the clutch part.
8. impact drill according to claim 5, which is characterized in that rear bearing, the moved end tooth are additionally provided on the main shaft
And static side tooth position is between the fore bearing and rear bearing, wherein the moved end tooth is close to the fore bearing.
9. impact drill according to claim 5, which is characterized in that the impact drill, which further includes, to be fixed on the fore bearing
And by regulating element limiting pressing plate on the housing, the restricted regulating element rotation angle is set on the pressing plate
The limit protrusion of degree is correspondingly provided with stop section on the regulating element.
10. impact drill according to claim 6, which is characterized in that the groove is included in the inner wall upper edge of regulating element
Symmetrically arranged first groove of circumference and the second groove, the protrusion include respectively corresponding with the first groove and the second groove the
One protrusion and the second protrusion, wherein size of first protrusion on regulating element circumferencial direction is more than the second protrusion in regulating element
Size on circumferencial direction, the first protrusion are less than second protrusion in regulating element radially in regulating element size radially
Size；Size of first groove on regulating element circumferencial direction is more than ruler of second groove on regulating element circumferencial direction
It is very little；Regulating element is additionally provided with the second confined planes on the outside of the first groove, is provided with that partly to cover second recessed in the second groove above
The shielding plate of slot.
11. impact drill according to claim 1, which is characterized in that the gear mechanism includes can be rotatably set in shell
Internal ring gear engages the planetary gear train for imparting power to main shaft, the regulating element and institute with the ring gear
It states and is additionally provided with the screw lid being threadedly coupled with the regulating element between housing, wherein, the end face of the ring gear is equipped with end tooth,
Between the screw lid and the end tooth be equipped with compression spring, support column and gasket, the support column pass through the housing with it is described
End tooth is in contact, and the compression spring bears against the screw lid and passes through the gasket and is pressed on the support column.
12. impact drill according to claim 1, which is characterized in that the clutch part is relative to housing towards moved end tooth side
To during axial movement, the clutch part can realize disengaging with static side tooth.
13. impact drill according to claim 1, which is characterized in that the moved end tooth is always maintained at engaging shape with static side tooth
State；Or cut spring is additionally provided between the moved end tooth and static side tooth, the clutch part is combined but described with the static side tooth
When impact drill dallies, cut spring makes moved end tooth be detached with static side tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510091522.1A CN104874834B (en) | 2014-02-28 | 2015-02-28 | Impact drill |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014100732315 | 2014-02-28 | ||
| CN201410073231 | 2014-02-28 | ||
| CN201510091522.1A CN104874834B (en) | 2014-02-28 | 2015-02-28 | Impact drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104874834A CN104874834A (en) | 2015-09-02 |
| CN104874834B true CN104874834B (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510091522.1A Active CN104874834B (en) | 2014-02-28 | 2015-02-28 | Impact drill |
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| Country | Link |
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| CN (1) | CN104874834B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107471164B (en) * | 2016-06-08 | 2020-05-26 | 南京德朔实业有限公司 | Torque output tool |
| CN109129342A (en) * | 2017-06-28 | 2019-01-04 | 苏州宝时得电动工具有限公司 | Multi-functional drill |
| CN109759373B (en) * | 2017-11-09 | 2024-07-09 | 苏州宝时得电动工具有限公司 | Multifunctional cleaning machine |
| CN108031895B (en) * | 2017-12-18 | 2018-11-20 | 绍兴伊司特家具有限公司 | A kind of novel arc drilling device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19809135A1 (en) * | 1998-03-04 | 1999-09-09 | Scintilla Ag | Electric hand machine tool |
| JP4227028B2 (en) * | 2004-01-09 | 2009-02-18 | 株式会社マキタ | Screwdriver drill |
| EP1857228B1 (en) * | 2006-05-19 | 2008-07-09 | Black & Decker, Inc. | Mode change mechanism for a power tool |
| CN101422896B (en) * | 2007-11-01 | 2012-03-28 | 苏州宝时得电动工具有限公司 | Impact drill |
| CN201220406Y (en) * | 2008-02-03 | 2009-04-15 | 南京德朔实业有限公司 | Electric tool |
| CN201223959Y (en) * | 2008-07-03 | 2009-04-22 | 陈会甫 | Multifunctional impact drill |
| CN201239943Y (en) * | 2008-07-03 | 2009-05-20 | 东莞群胜粉末冶金有限公司 | Impact switching mechanism of impact drill |
| CN201253698Y (en) * | 2008-08-15 | 2009-06-10 | 苏州宝时得电动工具有限公司 | Impact drill |
| CN201309010Y (en) * | 2008-11-27 | 2009-09-16 | 苏州宝时得电动工具有限公司 | Electric drill |
| CN102476367B (en) * | 2010-11-30 | 2014-04-16 | 苏州宝时得电动工具有限公司 | Power tool |
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2015
- 2015-02-28 CN CN201510091522.1A patent/CN104874834B/en active Active
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