CN106041833A - Impact tool - Google Patents
Impact tool Download PDFInfo
- Publication number
- CN106041833A CN106041833A CN201511026803.5A CN201511026803A CN106041833A CN 106041833 A CN106041833 A CN 106041833A CN 201511026803 A CN201511026803 A CN 201511026803A CN 106041833 A CN106041833 A CN 106041833A
- Authority
- CN
- China
- Prior art keywords
- tip end
- piston
- end tool
- drive
- air chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/06—Means for driving the impulse member
- B25D11/12—Means for driving the impulse member comprising a crank mechanism
- B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/04—Handles; Handle mountings
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/02—Percussive tool bits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/24—Damping the reaction force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of 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
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0023—Tools having a percussion-and-rotation mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of 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
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0038—Tools having a rotation-only mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0073—Arrangements for damping of the reaction force
- B25D2217/0076—Arrangements for damping of the reaction force by use of counterweights
- B25D2217/0084—Arrangements for damping of the reaction force by use of counterweights being fluid-driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/035—Bleeding holes, e.g. in piston guide-sleeves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/131—Idling mode of tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/371—Use of springs
- B25D2250/375—Fluid springs
Abstract
It is an object, an improved technique for preventing a driving mechanism for linearly driving a tool accessory is driven in a drive mode in which an impact tool performs a hammer operation to provide. To solve the problem, a representative hammer drill on a motion converting mechanism, a percussion mechanism and a rotation transmitting mechanism. The impact mechanism comprises a percussion piston and a striker, and a second air chamber is formed at the front of the percussion piston. In a drilling mode the second air chamber is placed in an airtight state, so that a driving of this prevented. Therefore, a piston which drives the impact piston under the action of an air spring with a first air chamber is prevented from moving. Specifically, are prevented in the drilling mode of the motion conversion mechanism and the impact mechanism because they are driven.
Description
Technical field
The present invention relates to the percussion tool of a kind of processing operation carrying out and specifying.
Background technology
Disclosed in Japanese invention Patent Publication No 2004-167638
A kind of hammer drill that can select drill jig formula and hammer drill pattern both patterns.This hammer drill has:
Piston cylinder, it drives percussion hammer by air chamber；Sleeve, it is arranged on jackshaft,
In order to drive piston cylinder；Lockplate, it rotates together with sleeve；Backstopping assembly, its with
Lockplate engages.Further, in this hammer drill, lockplate engages with backstopping assembly, makes this locking
Plate is restricted with the rotation of sleeve.Therefore, under drill jig formula, it is possible to prevent and wheel hub
The piston cylinder misoperation of sleeve connection.
[patent documentation 1] Japanese invention Patent Publication No
No. 2004-167638
In above-mentioned hammer drill, by the mechanical type card of backstopping assembly Yu lockplate
Close, there to be the driving of the shifter of piston cylinder at drill jig formula lower limit fixture.It addition, according to hammer
The configuration mode of each structural element bored and the size etc. of hammer drill, it is desirable to for interpreter
The structure of mechanism that the driving of structure carries out limiting can be rationalized.
Summary of the invention
In view of the foregoing, it is an object of the invention to provide the skill of a kind of improvement
Art, the technology utilizing this improvement can be under percussion tool carry out the drive pattern impacting operation
Limit for driving tip end tool to be allowed to make the driving of the drive mechanism of linearly operating.
The problems referred to above are solved by the present invention.Preferred skill according to percussion tool involved in the present invention
Art scheme, the tip end tool of the percussion tool of the present invention can be made straight along the long axis direction of himself
Line moves and can rotate.This percussion tool have motor, the 1st drive mechanism,
2 drive mechanisms and pattern switching mechanism.1st drive mechanism is driven by a motor, and makes top work
Have for linear motion.2nd drive mechanism is driven by a motor, and makes tip end tool rotate.
Pattern switching mechanism switching the 1st drive pattern and the 2nd drive pattern.Under the 1st drive pattern,
Tip end tool is the most for linear motion.That is, under the 1st drive pattern, tip end tool is the most permissible
The most for linear motion, again can for linear motion and rotational motion.Thus, drive mould the 1st
Under formula, tip end tool carry out impacting operation to work piece.It addition, at the 2nd drive pattern
Under, tip end tool only rotates.That is, under the 2nd drive pattern, tip end tool is not made
Linear motion.Thus, under the 2nd drive pattern, tip end tool carry out beating to work piece
Hole operation.
1st drive mechanism is made up of movement conversion mechanism and beater mechanism.Motion
Shifter is driven by a motor, and the rotational motion of motor is converted to tip end tool along long axis direction
Linear motion, make piston relative to piston maintaining part slide.Typically, piston maintaining part
Being made up of cylinder, this cylinder keeps this piston when piston can slide therein.
Beater mechanism is made up of drive member and impact structure.Drive member is driven by piston and at piston
Slide along the long axis direction of tip end tool in the inside of maintaining part.Typically, drive member is in shape
Become and driven under the effect of the air spring between piston and drive member.Impact structure ratio drives
Dynamic component configures near tip end tool.That is, impact structure is arranged in tip end tool and drive member
Between.Further, impact structure is driven by drive member, impacts tip end tool, makes this top work
Tool produces impulsive force.
Under the 1st drive pattern, air chamber is set to allow for and extraneous air
The circulation status of circulation, this air chamber is positioned at the inside of piston maintaining part, is leaned on by than drive member
The space of nearly tip end tool is constituted.This outside is preferably outside and the impact of piston maintaining part
The outside of instrument.Owing to air chamber is set to circulation status, thus this air chamber is in non-gas
Close state.Such as, when air chamber is in airtight conditions, drive member needs delivery air chamber
Inner air or make this air expansion.That is, the inner air of air chamber produce restriction to drive
The resistance of the driving of dynamic component.Therefore, by making air chamber be in circulation status, air chamber
Internal air is without limitation on the driving of drive member, and allows that drive member is driven by piston
Dynamic.Thus, the 1st drive mechanism is driven, and makes tip end tool for linear motion.That is, by pushing up
Work piece is carried out impacting operation by ending tool.
It addition, under the 2nd drive pattern, be positioned at the air in drive member front
Room is set to the non-negotiable state being blocked with the circulation of outside air.Owing to air chamber is set
It is set to non-negotiable state, thus this air chamber is in airtight higher than during non-hermetically sealed state of air-tightness
State.This non-negotiable state opening that preferably (i) connects with air chamber is completely enclosed and makes
Air chamber is by airtight state；(ii) opening connected with air chamber is closed and makes air chamber
Air relative to will not flow to during circulation status outside state.Owing to air chamber is in non-streaming
Logical state, the inner air of air chamber can limit the driving of drive member.In other words, non-
Under circulation status, air chamber is blocked with outside circulation, to limit the driving of drive member.
Thus, under the confined state of driving of the 1st drive mechanism, the 2nd drive mechanism is driven,
Tip end tool is made to rotate.That is, tip end tool work piece is carried out bore operation.
When using the technical program, under the 1st drive pattern, driven by the 1st
Mechanism drives tip end tool for linear motion.It addition, at tip end tool not by the 1st drive mechanism
Under the 2nd drive pattern driven, the inner air of air chamber is utilized to limit the 1st drive mechanism
Driving.Therefore, under the 2nd drive pattern, prevent the 1st drive mechanism inadvertently by
Drive.It addition, with the structure of the driving utilizing mechanical card incompatible restriction the 1st drive mechanism
Comparing, the technical program utilizes air to limit the driving of the 1st drive mechanism, it is not necessary to arrange
It is specifically designed to the parts of the driving limiting the 1st drive mechanism, it is possible to reduce the parts of percussion tool
Number.It addition, utilize air to limit the driving of the 1st drive mechanism, it is possible to reduce because of machinery
The impact that the engaging of formula and abrasion between the parts that cause bring.
According to the preferred technical scheme of percussion tool involved in the present invention,
Piston maintaining part forms as one with the tip end tool maintaining part keeping tip end tool.Protect at piston
Holding and be formed with intercommunicating pore in portion, intercommunicating pore can make air chamber connect with the outside of piston maintaining part
Logical.Typically, the front side in piston maintaining part is provided with tip end tool maintaining part.It addition,
Intercommunicating pore is arranged between drive member and impact structure.This percussion tool has switching part,
Switching part can make sky by the connected state of the outside of switching piston maintaining part with intercommunicating pore
Air chamber switches between connected state and non-interconnected state.This switching part can switch intercommunicating pore
Open mode and closed state.It addition, switching part can make the piston connected with intercommunicating pore
The region of the outside of maintaining part switches between the 1st region and the 2nd region.Such as, connection is worked as
When hole and 1 regional connectivity of the outside of piston maintaining part, air chamber and the 1st region are all set
It is set to airtight conditions, when intercommunicating pore and 2 regional connectivity of the outside of piston maintaining part, empty
Air chamber and the 2nd region can be set to that non-hermetically sealed state.In this case, the preferably the 2nd region
Ft connection with percussion tool.
According to the preferred technical scheme of percussion tool involved in the present invention,
Piston maintaining part can be in the front orientation near tip end tool on the long axis direction of tip end tool
Put and move away between the rear position of tip end tool.In piston holding part in anterior position
State under, switching part the connected state of intercommunicating pore is set as the 1st connected state, makes
Air chamber is in described non-negotiable state.When piston holding part in rear position,
By switching part, the connected state of intercommunicating pore is set as the 2nd connected state, makes air chamber be in
Described circulation status.In the connected state of intercommunicating pore, such as, the 1st connected state of intercommunicating pore
State is the 1st regional connectivity being in air-tight state of intercommunicating pore and the outside being positioned at piston maintaining part
State, the 2nd connected state of intercommunicating pore is intercommunicating pore and the outside being positioned at piston maintaining part
It is in the state of the 2nd regional connectivity of open mode.As the example of the connected state of intercommunicating pore,
1st connected state of intercommunicating pore is by the state in switching part closed communication hole, the of intercommunicating pore
2 connected states are the state being opened intercommunicating pore by switching part.
Under the 1st drive pattern, when processing operation, tip end tool is by quilt
The pushing of workpiece, piston maintaining part moves from anterior position rearward position, thus so that
Air chamber switches to circulation status from non-negotiable state.Therefore, allow the driving of drive member,
Driven tip end tool for linear motion by the 1st drive mechanism.It addition, under the 2nd drive pattern,
The movement from anterior position rearward position on the long axis direction of tip end tool of piston maintaining part
Being restricted, piston holding part is in anterior position.It is thus possible to maintain the non-negotiable of air chamber
State.Therefore, under the confined state of driving of drive member, the 2nd drive mechanism drive
Dynamic tip end tool rotates.
According to the preferred technical scheme of percussion tool involved in the present invention,
Switching part is made up of bearing, and bearing supporting piston maintaining part enables to rotate, and supports
Piston maintaining part enables to slide along the long axis direction of tip end tool.Switching part is by supporting work
The bearing of plug maintaining part is constituted, because of without arranging special parts as switching part.That is,
The components number of percussion tool can be reduced.
According to the preferred technical scheme of percussion tool involved in the present invention,
The 1st intercommunicating pore and the 2nd intercommunicating pore that intercommunicating pore is formed from piston maintaining part are constituted.Further,
1st intercommunicating pore and described 2nd intercommunicating pore are arranged on piston on the long axis direction of tip end tool and protect
Hold in the same position in portion.That is, the 1st intercommunicating pore and the 2nd intercommunicating pore are at the major axis of tip end tool
Overlap on direction.Preferably the 1st intercommunicating pore and the 2nd intercommunicating pore are relative to piston maintaining part
Central axis and be mutually positioned at opposite side and be oppositely arranged.Owing to being provided with multiple connection
Hole, it is thus possible to reliably air chamber is switched to circulation status.Further, since multiple connections
Hole is arranged in the same position on the long axis direction of tip end tool, thus, easily by switching
The connected state of parts switching intercommunicating pore.
According to the preferred technical scheme of percussion tool involved in the present invention,
Under the 1st drive pattern, allow air chamber and the 1st space of the outside being positioned at piston maintaining part
Connection, to allow the piston driving to drive member, wherein, this air chamber is positioned at piston and keeps
The inside in portion, is constituted near the space of tip end tool by than drive member.It addition, the 2nd
Under drive pattern, air chamber is less than the 1st space with the volume of the outside being positioned at piston maintaining part
2nd space connection so that the driving of described drive member is restricted by piston.Typically,
1st space and the 2nd space are respectively positioned at the airtight space within tool body.Utilize position
Air chamber in drive member front and the sky outside piston maintaining part connected with this air chamber
Between volume control the driving of drive member.That is, when air chamber and volume are less than the 1st space
The 2nd space connection time, when connecting with air chamber and the 1st space compared with, need bigger power
Carry out the inner air of delivery air chamber or make this air expansion.Therefore, when air chamber and the 2nd
During the connection of space, the inner air of air chamber, as the development of resistance effect of drive member, limits
The driving of drive member.It addition, when air chamber and the 1st space connect, the inside of air chamber
Air, not as the development of resistance effect of drive member, allows the driving of drive member.
Use the present invention can provide the technology of a kind of improvement, utilize this improvement
Technology can limit for driving top under percussion tool does not carry out the drive pattern impacting operation
Ending tool and be allowed to make the driving of the drive mechanism of linearly operating.
Accompanying drawing explanation
Fig. 1 is the hammer drill involved by representational embodiment representing the present invention
Integrally-built side view.
Fig. 2 is the integrally-built sectional view representing hammer drill, and representational tool retainer is positioned at
State during anterior position.
Fig. 3 is the enlarged partial sectional view of Fig. 2.
Fig. 4 is the integrally-built sectional view representing hammer drill, and representational tool retainer is positioned at
State during rear position.
Fig. 5 is the enlarged partial sectional view of Fig. 4.
[description of reference numerals]
100: hammer drill；101: main part；102: helical spring；103: front side housing；104:
Motor shell；105: gear housing；105a: oil filter；106: cylinder maintaining part；
106a: gear；107: rear side housing；109: handle；110: electro-motor；111: horse
Reach axle；112: the 1 bevel gears；113: the 2 bevel gears；119: drill bit；120: motion
Shifter；121: jackshaft；123: rotor；124: ball；125: tilting member；
126: force application spring；127: piston；127a: the 1 air chamber；129: cylinder；129a:
Spring-reception portion；130: intercommunicating pore；131: the 2 air chambers；135: gear；136A:
1st external air chamber；136B: the 2 external air chamber；137: oil sealing；140: impact knot
Structure key element；143: percussion hammer；145: bump bolt；150: rotation transfer mechanism；151: the 1 teeth
Wheel；153: the 2 gears；159: tool holder；160: battery installation section；161: electricity
Pond group；170: drive pattern switching mechanism；171: switching part；172: cam.
Detailed description of the invention
Below, with reference to Fig. 1～Fig. 5 representational embodiment to the present invention
Illustrate.In the present embodiment, say using hammer drill as percussion tool example
Bright.As it is shown in figure 1, hammer drill 100 is configured to, at the apex zone installing drill of main part 101
119, make mounted drill bit 119 make linearly operating and with it along himself long axis direction
Rotate centered by the long axis ray of self action, with to work piece (such as, concrete)
Carry out hammer drill operation or drilling operation (bore operation).This drill bit 119 corresponds to this
The enforcement structure example of bright " tip end tool ".It addition, for convenience of explanation, at drill bit 119
Long axis direction on, be hammer drill 100 with the apex zone side (right side of Fig. 1) of hammer drill 100
Front side, being positioned at the back-end region side (left side of Fig. 1) with apex zone opposite side be
The rear side of hammer drill 100.
As depicted in figs. 1 and 2, main part 101 mainly includes forming hammer drill 100
The front side housing 103 of exterior contour and rear side housing 107.The drill bit 119 work by tubular
Tool retainer 159 is can be arranged on the apex zone of front side housing 103 in the way of removing.
Drill bit 119 can move along the long axis direction of himself relative to tool holder 159, and
Keep under the confined state of the rotation of circumferencial direction centered by the long axis ray of himself
On this tool holder 159.
As in figure 2 it is shown, front side housing 103 mainly includes motor shell 104 He
Gear housing 105.Motor shell 104 receives dress electro-motor 110.The horse of electro-motor 110
The long axis direction of the bearing of trend and drill bit 119 that reach axle 111 intersects (intersection) configuration.It addition,
For convenience of explanation, on the direction vertical with the long axis direction of drill bit 119, with drill bit 119
Side (upside of Fig. 2) is the upside of hammer drill 100, with electro-motor 110 side (Fig. 2
Downside) be the downside of hammer drill 100.This electro-motor 110 corresponds to the " horse of the present invention
Reach " enforcement structure example.
As in figure 2 it is shown, gear housing 105 receipts shipment manual converting mechanism 120,
Impact structure key element 140 and rotation transfer mechanism 150.The rotation output of electro-motor 110
Impact knot is passed to after being converted into linearly operating by jackshaft 121 passive movement shifter 120
Structure key element 140.Further, impact structure key element 140 makes to produce along drill bit 119 on drill bit 119
The impulsive force of long axis direction.This movement conversion mechanism 120 and impact structure key element 140 are right
Should be in the enforcement structure example of " the 1st drive mechanism " of the present invention.It addition, electro-motor 110
Rotation output be delivered to rotation transfer mechanism 150 by jackshaft 121, by this rotation
Transmission mechanism 150 passes to tool holder 159 after slowing down.So that drill bit 119 is along with it
Circumferencial direction centered by the long axis ray of self rotates.This rotation transfer mechanism 150 is corresponding
Enforcement structure example in " the 2nd drive mechanism " of the present invention.
As it is shown in figure 1, be configured with rear side housing at the rear of front side housing 103
107.Rear side housing 107 is formed for the handle 109 that operator holds.Handle 109
Along extended with the above-below direction that the long axis direction of drill bit 119 intersects.On handle 109 times
Side is provided with battery installation section 160, and set of cells 161 can be arranged on this in the way of removing
In battery installation section 160.Thered is provided by the set of cells 160 being arranged in this battery installation section 160
Drive the electric current of electro-motor 110.
As depicted in figs. 1 and 2, rear side housing 107 mainly covers front side housing
Motor shell 104 in 103.Therefore, gear housing 105 is exposed to outside.Front side housing
103 are connected with rear side housing 107 and can relative movement under the effect of helical spring 102.
Thus, vibration side body 103 in the past can be suppressed to pass to be formed at rear side when processing operation
The handle 109 of housing 107.
As in figure 2 it is shown, be provided with on the motor drive shaft 111 of electro-motor 110
1st bevel gear 112.Jackshaft 121 is provided with engaged with the 1st bevel gear 112
2 bevel gears 113.Thus, jackshaft 121 is by the 1st bevel gear the 112 and the 2nd bevel gear
113 are driven by electro-motor 110 and rotate.The axis of jackshaft 121 and electro-motor 110
The axes intersect of motor drive shaft 111, and with the long axis direction configured in parallel of drill bit 119.
As it is shown on figure 3, movement conversion mechanism 120 is arranged in electro-motor 110
The top of motor drive shaft 111.Movement conversion mechanism 120 mainly has: rotor 123, its
With jackshaft 121 arranged coaxial；Tilting member 125, it passes through ball 124 along with rotor
The rotation of 123 swings along direction before and after hammer drill 100；Piston 127, itself and tilting member 125
Connect；Cylinder 129, it receives dress piston 127.This movement conversion mechanism 120 corresponds to this
The enforcement structure example of " movement conversion mechanism " of invention.It addition, piston 127 and cylinder 129
It it is the enforcement structure example corresponding respectively to the present invention " piston " and " piston maintaining part ".
Rotor 123 is in substantially cylindric.This rotor 123 is by can be with
The pattern switching part 171 of rotor 123 and jackshaft 121 engaging is driven by jackshaft 121
And rotate.Piston 127 is the parts of bottomed cylindrical.Therefore, piston 127 is otherwise known as and " lives
Plug cylinder ".The bottom of the rear end of this piston 127 is connected with tilting member 125.Thus, piston
127 under tilting member 125 swing effect along the longitudinal direction in the inside of cylinder 129 along front
Rear is to slip.Cylinder 129 forms the rear area of tool holder 159, and with this instrument
Retainer 159 forms as one.This tool holder 159 corresponds to the " top of the present invention
Tool holder " enforcement structure example.
The rearward end of cylinder 129 is maintained at the bearing in cylinder maintaining part 106
106a supports.Further, cylinder maintaining part 106 remains fixed in gear housing 105.It addition,
Zone line on the long axis direction being positioned at drill bit 119 of cylinder 129 is maintained at gear housing
Bearing 135 on 105 supports.Thus, cylinder 129 (tool holder 159) passes through bearing
106a, 135 with can along cylinder 129 long axis direction slide and can be with the length of cylinder 129
The mode rotated centered by axle axis is kept.
It addition, on cylinder 129, be provided with the part as cylinder 129
Discoid spring-reception portion 129a.Between this spring-reception portion 129a and bearing 106a
It is provided with force application spring 126.This force application spring 126 is right in point relative to the center of cylinder 129
Claim.Further, in figure 3,1 force application spring 126 is only indicated.Force application spring 126 leads to
Cross to spring-reception portion 129a exert a force, with to cylinder 129 (tool holder 159) apply to
The power in front.
As it is shown on figure 3, impact structure key element 140 mainly has: percussion hammer 143,
It can be at the internal slide of piston 127；Bump bolt 145, it is arranged in the front of percussion hammer 143,
(impact) is clashed into by percussion hammer 143.Further, piston 127 be positioned at percussion hammer 143 rear
Space, portion forms the 1st air chamber 127a played a role as air spring.This impact structure is wanted
Element 140 corresponds to the enforcement structure example of " beater mechanism " of the present invention.It addition, percussion hammer 143
It is to correspond respectively to the present invention " drive member " and the reality of " impact structure " with bump bolt 145
Execute structure example.
The 2nd air chamber 131 it is formed with between percussion hammer 143 and bump bolt 145.
2nd air chamber 131 corresponds to the enforcement structure example of " air chamber " of the present invention.This is years old
2 air chambers 131 are by 2 intercommunicating pores 130 being formed on cylinder 129 and cylinder 129
Ft connection.This intercommunicating pore 130 corresponds to the enforcement structure example of " intercommunicating pore " of the present invention.
2 intercommunicating pores 130, on the long axis direction of cylinder 129, set in opposite directions in overlapped region
Put.It addition, in the front of bearing 135, arrange between cylinder 129 and gear housing 105
There is the oil sealing 137 of cylindrical shape.Thus, in the outside of cylinder 129, in gear 135 and oil sealing
The 2nd airtight external air chamber 136B it is formed with between 137.It addition, after gear 135
Side, is formed with the volume the 1st external air chamber 136A more than the 2nd external air chamber 136B.
1st external air chamber 136A is by the oil filter (oil being arranged in gear housing 105
Filter) 105a and the outside state maintained the circulation of air.It addition, the 1st external air chamber
136A can also be formed as airtight construction.
As it is shown on figure 3, rotation transfer mechanism 150 mainly has: the 1st gear
151, it rotates together with jackshaft 121；2nd gear 153, itself and the 1st gear 151
Engaging.2nd gear 153 be arranged on tool holder 159 (cylinder 129) upper and with this work
Tool retainer 159 (cylinder 129) forms as one, and the 2nd gear 153 is by the 1st gear
The rotation of 151 passes to tool holder 159.
According to the drive pattern selected by operator, and switch above-mentioned motion and turn
Converting mechanism 120, impact structure key element 140 and the driving of rotation transfer mechanism 150.That is,
When selection hammer drill pattern is as the drive pattern of hammer drill 100, operating shifter 120, punching
Hit structural element 140 and rotation transfer mechanism 150 is driven.So that drill bit 119 is along it
Self long axis direction is for linear motion and rotates centered by the long axis ray of self.That is, bore
119 pairs of work pieces carry out hammer drill operation.It addition, when selecting drill jig formula as hammer drill 100
Drive pattern time, only rotation transfer mechanism 150 is driven, movement conversion mechanism 120 and punching
Hit structural element 140 not driven.So that during drill bit 119 with the long axis ray of self is only
The heart rotates, i.e. drill bit 119 carries out bore operation to work piece.This hammer drill pattern and drill jig
Formula is to correspond respectively to the present invention " the 1st drive pattern " and the reality of " the 2nd drive pattern "
Execute structure example.
(drive pattern switching mechanism)
The drive pattern of hammer drill 100 is switched by drive pattern switching mechanism 170.As it is shown on figure 3,
Drive pattern switching mechanism 170 mainly has pattern switching part 171 and is operated by operator
Lever (diagram is omitted).This drive pattern switching mechanism 170 corresponds to the " mould of the present invention
Formula switching mechanism " enforcement structure example.
As it is shown on figure 3, pattern switching part 171 is portion the most cylindrically
Part.This pattern switching part 171 is in the state can slided along the long axis direction of jackshaft 121
Engage with the 1st gear 151 down.Therefore, pattern switching part 171 with the 1st gear 151
Rotate under the state of engaging.
It addition, pattern switching part 171 engages with spring-reception portion 129a, and
And long axis direction along drill bit 119 moves together with this spring-reception portion 129a and cylinder 129.
Rearward end at pattern switching part 171 is provided with convex be formed on rotor 123
The cam 172 that wheel (diagram is omitted) engages.That is, as it is shown on figure 3, work as pattern switching part
171 together with cylinder 129 during located anteriorly position, pattern switching part 171 and rotor 123
Do not engage.Therefore, rotor 123 will not be rotated by driving so that movement conversion mechanism 120
Will not be driven with impact structure key element.It addition, as it is shown in figure 5, when pattern switching part 171
When being located behind position together with cylinder 129, pattern switching part 171 blocks with rotor 123
Close.Thus, rotor 123 is driven by jackshaft 121 by pattern switching part 171 and turns
Dynamic so that movement conversion mechanism 120 and impact structure key element 140 are driven.
Lever is operated by operator and turns centered by the pivot center of regulation
Dynamic.This lever mobile restriction site and mobile allow be switched between position, work as lever
When being switched to mobile restriction site, this lever abuts with spring-reception portion 129a, limits
This spring-reception portion 129a moves to the rear of hammer drill 100；When lever is switched to mobile
When allowing position, this lever is released from the abutting state of spring-reception portion 129a, thus
Allow that this spring-reception portion 129a moves to the rear of hammer drill 100.This moves restriction site pair
Should move allow that position corresponds to hammer drill pattern in drill jig formula.
When lever is operated and is positioned at mobile restriction site, even if
Cylinder 129 (tool holder 159) by from drill bit 119 towards rearward power time,
It also is able to be limited cylinder 129 (tool holder by the lever abutted with spring-reception portion 129a
159) rearward move.Now, the pattern switching part 171 engaged with spring-reception portion 129a
Rearward movement is also restrained.Therefore, it is possible to maintain pattern switching part 171 and rotate
The non-engagement state of body 123.So that movement conversion mechanism 120 and impact structure key element 140
Will not be driven, only rotation transfer mechanism 150 is driven.That is, drive pattern is set to bore
Pattern.
It addition, when lever operated and be positioned at mobile allow put,
When cylinder 129 (tool holder 159) by from drill bit 119 towards rearward power time,
This cylinder 129 (tool holder 159) overcome force application spring 126 active force and rearward
Mobile.Now, the pattern switching part 171 engaged with spring-reception portion 129a is the most rearward
Movement, engage with rotor 123.Thus, rotor 123 is by pattern switching part 171
Driven by jackshaft 121 and rotate.So that movement conversion mechanism 120, impact structure are wanted
Element 140 and rotation transfer mechanism 150 are driven.That is, drive pattern is set to hammer drill mould
Formula.
In above-mentioned hammer drill 100, when the trigger being arranged on handle 109
When 109a is pulled, set of cells 161 provides electric current, so that electro-motor 110 is driven.And
And, drive pattern switching mechanism 170 drives hammer drill according to the drive pattern selected by operator
100。
(action of hammer drill during drill jig formula)
When drill jig formula is selected, the rearward movement of pattern switching part 171 is restricted,
Making, only rotation transfer mechanism 150 is driven.Thus, drill bit 119 is driven and is rotated,
Carry out bore operation.Under this drill jig formula, movement conversion mechanism 120 and impact structure key element 140
It is not driven to.
It is configured with in the inside of gear housing 105 for making movement conversion mechanism 120 and rotating biography
Pass the lubricant of mechanism 150 smooth rotation.It is therefoie, for example, sometimes at jackshaft 121 with turn
Produce micro-under the effect of the lubricant between kinetoplast 123 between jackshaft 121 and rotor 123
Little frictional force so that rotor 123 rotates under the effect of this frictional force.Such a turn
The rotation of kinetoplast 123 will not make movement conversion mechanism 120 generation that drill bit 119 can be made to hammer into shape
The sufficient driving force of operation, will not produce impact to drive pattern.But, due to rotor
The rotation of 123, may produce and cause along with this rotor 123 and moving of piston 127
The situations such as vibration.Then, hammer drill 100 is configured to, and limits movement conversion mechanism under drill jig formula
120 are driven inadvertently.
Specifically, as it is shown on figure 3, under drill jig formula, cylinder 129 (work
Tool retainer 159) rearward movement limited so that and this cylinder 129 is maintained at front
Position.When cylinder 129 located anteriorly position, bearing 135 connects with being positioned at of cylinder 129
The region at rear, hole 130 abuts, the 2nd air chamber the 131 and the 1st external air chamber 136A
Connection is blocked.Now, the 2nd air chamber 131 is by intercommunicating pore the 130 and the 2nd extraneous air
Room 136B connects.Thus, the 2nd air chamber 131 is hindered with the connection of the outside of hammer drill 100
Disconnected.This bearing 135 corresponds to the enforcement structure example of " switching part " of the present invention.It addition,
1st external air chamber 136A and the 2nd external air chamber 136B are to correspond respectively to the present invention
" the 1st space " and the enforcement structure example in " the 2nd space ".
Now, by the 2nd air chamber the 131 and the 2nd external air chamber 136B,
The front of percussion hammer 143 forms airtight space.In order to make percussion hammer 143 along the major axis of drill bit 119
Direction is moved, and needs to compress the inside of the 2nd air chamber the 131 and the 2nd external air chamber 136B
Air or make this air expansion.That is, the 2nd air chamber the 131 and the 2nd external air chamber 136B
Inside air play drag effect.Therefore, in order to make tilting member 125 swing, so that
Piston 127 moves along the long axis direction of drill bit 119, needs to overcome by the 2nd air chamber 131 He
The power of resistance produced by the inner air of the 2nd external air chamber 136B.
But, the small friction institute between rotor 123 and jackshaft 121
The power produced, is not enough to overcome by the 2nd air chamber the 131 and the 2nd external air chamber 136B
Resistance produced by inner air.That is, by the 2nd air chamber the 131 and the 2nd external air chamber 136B
Inner air produced by act on the resistance of percussion hammer 143 more than rotor 123 and jackshaft
The frictional force produced between 121.It is thus possible to suppress rotor 123, tilting member 125, live
Plug 127 and the movement of percussion hammer 143.That is, under drill jig formula, movement conversion mechanism 120 He
The driving of impact structure key element 140 can be solidly constrained.
(action of hammer drill during hammer drill pattern)
When hammer drill pattern is selected, allow that pattern switching part 171 rearward moves.Such as figure
Shown in 4 and Fig. 5, during hammer drill operation, operator pushes drill bit 119 to work piece so that work
Tool retainer 159 (cylinder 129) is rearward moved by this drill bit 119.By this cylinder
129 rearward movements, pattern switching part 171 rearward moves together with this cylinder 129.
By this rearward movement of pattern switching part 171, the cam 172 of pattern switching part 171
Engage with rotor 123.Thus, rotor 123 is middle by pattern switching part 171
Axle 121 drives.
Specifically, as it is shown in figure 5, under hammer drill pattern, drill bit 119 quilt
Operator pushes work piece to so that cylinder 129 (tool holder 159) is located behind position
Put.When cylinder 129 is located behind position, gear 135 is positioned at intercommunicating pore with cylinder 129
The region in 130 fronts abuts, the company of the 2nd air chamber the 131 and the 2nd external air chamber 136B
Lead to and be blocked.Now, the 2nd air chamber 131 is by intercommunicating pore the 130 and the 1st external air chamber
136A connects.
1st external air chamber 136A passes through oil filter 105a and hammer drill
The ft connection of 100.Therefore, the inner air of the 2nd air chamber 131 can be passed to hammer drill
The outside of 100.That is, the ft connection of the 2nd air chamber 131 and hammer drill 100 is allowed.Therefore,
Different from during drill jig formula, the inner air of the 2nd air chamber 131 will not produce and act on percussion hammer 143
Resistance.It is thus possible to drive piston 127, by driving piston 127, and empty via the 1st
Air chamber 127a drives percussion hammer 143.In other words, the 2nd air chamber 131 will not hinder motion to turn
Converting mechanism 120 and the driving of impact structure key element 140, can by this impact structure key element 140
Drill bit 119 is made to move along a straight line along the long axis direction of himself.Now, drill bit 119 is rotated passing
Pass mechanism 150 to drive and rotate centered by the long axis ray of himself.Therefore, drill bit 119
For linear motion by driving and rotate, to carry out hammer drill operation.
According to above-mentioned present embodiment, during drill jig formula, due to the 2nd air chamber
The resistance that the inner air of 31 produces, makes the movement of percussion hammer 143 be restricted.It is thus possible to
Movement conversion mechanism 120 and the driving of impact structure key element 140 is reliably limited during drill jig formula.
In other words, by switching the connected state of the 2nd air chamber 131 such that it is able to utilize the 2nd sky
The inner air of air chamber 131 limits the movement of percussion hammer 143.It addition, it is empty by switching the 2nd
The connected state of air chamber 131 such that it is able to release the restriction of the movement to percussion hammer 143.
It addition, according to present embodiment, use bearing 135 as switching the 2nd
The switching part of the connected state of air chamber 131.That is, utilization is arranged on showing on hammer drill 100
Some structural elements switch the connected state of the 2nd air chamber 131.Therefore, there is no need to arrange
New special parts are used as switching part.
It addition, in above-mentioned present embodiment, the 2nd air chamber 131 passes through
Intercommunicating pore 130 connects with the 1st external air chamber 136A or the 2nd external air chamber 136B,
But, it is not limited to this.It is for instance possible to use following structure: before cylinder 129 is positioned at
Under the state that orientation is put, bearing 135 closed communication hole 130, it is located behind position at cylinder 129
Under the state put, intercommunicating pore 130 opened by bearing 135.Due to the closing of intercommunicating pore 130, only
Confined space is formed in the front region of percussion hammer 143 by the 2nd air chamber 131.
It addition, in the present embodiment, bearing 135 is used to switch the 2nd empty
Air chamber the 131 and the 1st external air chamber 136A or the connection of the 2nd external air chamber 136B
State, but, it is not limited to this.For example, it is possible to arrange the intercommunicating pore 130 with cylinder 129
Corresponding connected state controls parts.This connected state controls parts and was both configured to, and cuts
Change the 2nd air chamber the 131 and the 1st external air chamber 136A or the 2nd external air chamber 136B
Connected state, be configured to again, closed communication hole 130, make the 2nd air chamber 131 energy
Enough form confined space.
In this case, connected state control parts can be according to by drive pattern
The drive pattern that switching mechanism sets switches the connected state of the 2nd air chamber 131.Such as,
Parts mechanical type can be controlled with connected state by the structural element of drive pattern switching mechanism
Engaging, make this connected state control parts move relative to intercommunicating pore 130, switch the 2nd
The connected state of air chamber 131.It addition, controller and executor can be according to by driving mould
The drive pattern that formula switching mechanism sets, makes connected state control parts relative to intercommunicating pore 130
Mobile, switch the connected state of the 2nd air chamber 131.
It addition, in the present embodiment, on the long axis direction of cylinder 129
Assigned position is formed with 2 intercommunicating pores, but, it is not limited to this.For example, it is possible at gas
At on the long axis direction of cylinder 129 2, position forms intercommunicating pore 130.
It addition, in the present embodiment, hammer drill 100 has drill jig formula and hammer drill
Pattern, but, it is not limited to this.Can also have drill bit 119 not rotate, and
Hammer pattern the most for linear motion.
In view of the purport of the invention described above, percussion tool involved in the present invention can
To use following manner.Further, each mode is possible not only to individually or is mutually combined use, also
Can use with the solution pool described in claim.
(mode 1)
Under the 2nd drive pattern, by pattern switching mechanism and the mechanical card of piston maintaining part
Close, limit piston maintaining part and move from anterior position rearward position.
(mode 2)
Under the 1st drive pattern, allow that piston maintaining part moves from anterior position rearward position.
(mode 3)
Utilize the work of the air spring of the 2nd air chamber being arranged between piston and drive member
With, piston drive drive member,
Under the 2nd drive pattern, utilize the air within air chamber and the 2nd air chamber, limit
Piston processed and the movement of drive member, thus limit the driving of the 1st drive mechanism.
(each structural element of present embodiment and each structural element of the present invention
Corresponding relation)
The corresponding relation of each structural element of present embodiment and each structural element of the present invention is such as
Under.Further, present embodiment represents an example of the mode for implementing the present invention, this
The bright structure being not limited to present embodiment.
Hammer drill 100 corresponds to an example of the structure of " percussion tool " of the present invention.
Electro-motor 110 corresponds to an example of the structure of " motor " of the present invention.
Movement conversion mechanism 120 corresponds to the structure of " the 1st drive mechanism " of the present invention
One example.
Movement conversion mechanism 120 corresponds to the structure of " movement conversion mechanism " of the present invention
One example.
Impact structure key element 140 corresponds to the structure of " the 1st drive mechanism " of the present invention
One example.
Impact structure key element 140 corresponds to of the structure of " beater mechanism " of the present invention
Example.
Piston 127 corresponds to an example of the structure of " piston " of the present invention.
Cylinder 129 corresponds to an example of the structure of " the piston maintaining part " of the present invention.
Tool holder 159 corresponds to the structure of " the tip end tool maintaining part " of the present invention
One example.
Percussion hammer 143 corresponds to an example of the structure of " drive member " of the present invention.
Bump bolt 145 corresponds to an example of the structure of " impact structure " of the present invention.
Rotation transfer mechanism 150 corresponds to the structure of " the 2nd drive mechanism " of the present invention
One example.
2nd air chamber 131 corresponds to an example of the structure of " air chamber " of the present invention.
Hammer drill pattern corresponds to an example of the structure of " the 1st drive pattern " of the present invention.
Drill jig formula corresponds to an example of the structure of " the 2nd drive pattern " of the present invention.
Drive pattern switching mechanism 170 corresponds to the knot of " the pattern switching mechanism " of the present invention
One example of structure.
Intercommunicating pore 130 corresponds to an example of the structure of " intercommunicating pore " of the present invention.
Bearing 135 corresponds to an example of the structure of " switching part " of the present invention.
1st external air chamber 136A corresponds to the structure in " the 1st space " of the present invention
One example.
2nd external air chamber 136B corresponds to the structure in " the 2nd space " of the present invention
One example.
Claims (7)
1. a percussion tool, its tip end tool can make straight line along the long axis direction of himself
Move and can rotate, it is characterised in that
There is motor, the 1st drive mechanism, the 2nd drive mechanism, pattern switching mechanism, wherein,
Described 1st drive mechanism is driven by described motor, makes described tip end tool for linear motion；
Described 2nd drive mechanism is driven by described motor, makes described tip end tool rotate；
Described pattern switching mechanism switching the 1st drive pattern and the 2nd drive pattern, described the
Under 1 drive pattern, described tip end tool is the most for linear motion, at described 2nd drive pattern
Under, described tip end tool only rotates,
Described 1st drive mechanism is made up of movement conversion mechanism and beater mechanism, wherein,
Described movement conversion mechanism is driven by described motor, the rotational motion of described motor is changed
For described tip end tool along the linear motion of long axis direction, make piston sliding relative to piston maintaining part
Dynamic；
Described beater mechanism has: drive member, and it is driven by described piston and at described piston
Slide along the long axis direction of described tip end tool in the inside of maintaining part；Impact structure, its ratio is described
Drive member configures near described tip end tool, is driven by described drive member, impacts described top
Ending tool,
Under described 1st drive pattern, air chamber is in the stream being allowed with external air currents
Logical state, to allow the driving to described drive member of the described piston, is driven machine by the described 1st
Structure drives described tip end tool for linear motion, and described air chamber is positioned at described piston maintaining part
Inside, is constituted near the space of described tip end tool by than described drive member,
Under described 2nd drive pattern, described air chamber is in and is hindered with the circulation of outside air
Disconnected non-negotiable state so that the driving of described drive member is restricted by described piston, by
Described 2nd drive mechanism drives described tip end tool to rotate.
Percussion tool the most according to claim 1, it is characterised in that
Described piston maintaining part is formed as with the tip end tool maintaining part keeping described tip end tool
Integrally,
Being formed with intercommunicating pore in described piston maintaining part, described intercommunicating pore can make described air
Room and the ft connection of described piston maintaining part,
Described percussion tool has switching part, and described switching part can be by switching described work
The outside of plug maintaining part and the connected state of described intercommunicating pore, make described air chamber in described connection
Switch between state and described non-interconnected state.
Percussion tool the most according to claim 2, it is characterised in that
Described piston maintaining part can be near described on the long axis direction of described tip end tool
Move between anterior position and the rear position away from described tip end tool of tip end tool,
When described piston holding part in described anterior position, by described switching part
The connected state of described intercommunicating pore is set as the 1st connected state, makes described air chamber be in institute
State non-negotiable state,
When described piston holding part in described rear position, by described switching part
The connected state of described intercommunicating pore is set as the 2nd connected state, makes described air chamber be in institute
State circulation status,
Under described 1st drive pattern, when processing operation, described tip end tool is by being added
The pushing of workpiece, described piston maintaining part moves to described rear position from described anterior position,
Thus, described air chamber switches to described circulation status from described non-negotiable state,
Under described 2nd drive pattern, described piston maintaining part is at the major axis of described tip end tool
Being restricted from described anterior position to the movement of described rear position on direction, described piston is protected
The portion of holding is positioned at described anterior position, to maintain the described non-negotiable state of described air chamber.
4. according to the percussion tool described in Claims 2 or 3, it is characterised in that
Described switching part is made up of bearing, and described bearing supports described piston maintaining part and makes it
Enough rotations, and, support described piston maintaining part and enable the major axis along described tip end tool
Slide in direction.
5. according to the percussion tool described in any one in claim 2～4, it is characterised in that
Described intercommunicating pore is formed from the 1st intercommunicating pore in described piston maintaining part and the 2nd connection
Hole is constituted,
Described 1st intercommunicating pore and described 2nd intercommunicating pore are on the long axis direction of described tip end tool
It is arranged in the same position of described piston maintaining part.
Percussion tool the most according to claim 5, it is characterised in that
Described 1st intercommunicating pore and described 2nd intercommunicating pore are relative to the center of described piston maintaining part
Axis and be mutually positioned at opposite side and be oppositely arranged.
7. a percussion tool, its tip end tool can make straight line along the long axis direction of himself
Move and can rotate, it is characterised in that
There is motor, the 1st drive mechanism, the 2nd drive mechanism, pattern switching mechanism, wherein,
Described 1st drive mechanism is driven by described motor, makes described tip end tool for linear motion；
Described 2nd drive mechanism is driven by described motor, makes described tip end tool rotate；
Described pattern switching mechanism switching the 1st drive pattern and the 2nd drive pattern, described the
Under 1 drive pattern, described tip end tool is the most for linear motion, at described 2nd drive pattern
Under, described tip end tool only rotates,
Described 1st drive mechanism is made up of movement conversion mechanism and beater mechanism, wherein,
Described movement conversion mechanism is driven by described motor, the rotational motion of described motor is changed
For described tip end tool along the linear motion of long axis direction, make piston in the inside of piston maintaining part
Slide；
Described beater mechanism has: drive member, and it is driven by described piston and at described piston
Slide along the long axis direction of described tip end tool in the inside of maintaining part；Impact structure, its ratio is described
Drive member configures near described tip end tool, is driven by described drive member, impacts described top
Ending tool,
Under described 1st drive pattern, allow air chamber and be positioned at outside described piston maintaining part
The 1st space connection in portion, to allow the driving to described drive member of the described piston, by described
1st drive mechanism drives described tip end tool for linear motion, and described air chamber is positioned at described work
The inside of plug maintaining part, is constituted near the space of described tip end tool by than described drive member,
Under described 2nd drive pattern, described air chamber be positioned at outside described piston maintaining part
The volume in portion is less than the 2nd space connection in described 1st space so that described piston drives described
The driving of dynamic component is restricted, described 2nd drive mechanism drive described tip end tool to turn
Dynamic motion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-078808 | 2015-04-07 | ||
| JP2015078808A JP6480788B2 (en) | 2015-04-07 | 2015-04-07 | Impact tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106041833A true CN106041833A (en) | 2016-10-26 |
| CN106041833B CN106041833B (en) | 2020-07-17 |
Family
ID=56986476
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511026803.5A Active CN106041833B (en) | 2015-04-07 | 2015-12-30 | Impact tool |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6480788B2 (en) |
| CN (1) | CN106041833B (en) |
| DE (1) | DE102016004193B4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108724112A (en) * | 2017-04-18 | 2018-11-02 | 株式会社牧田 | Hammer tool |
| CN113474125A (en) * | 2019-03-28 | 2021-10-01 | 工机控股株式会社 | Impact working machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103987388A (en) * | 2011-06-29 | 2014-08-13 | 默沙东公司 | Novel crystalline forms of a dipeptidyl peptidase-iv inhibitor |
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| EP0599537A1 (en) * | 1992-11-23 | 1994-06-01 | Black & Decker Inc. | Rotary hammer with a pneumatic hammer mechanism |
| JP2000033507A (en) * | 1998-07-16 | 2000-02-02 | Ryobi Ltd | Striking force adjusting mechanism of hammer drill |
| CN100409984C (en) * | 2002-11-20 | 2008-08-13 | 株式会社牧田 | Percussion drill |
| WO2015029660A1 (en) * | 2013-08-30 | 2015-03-05 | 日立工機株式会社 | Boring tool |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3292969B2 (en) * | 1995-08-18 | 2002-06-17 | 株式会社マキタ | Hammer drill |
| DE10294312T5 (en) * | 2001-09-17 | 2004-09-02 | Milwaukee Electric Tool Corp., Brookfield | rotary hammer |
-
2015
- 2015-04-07 JP JP2015078808A patent/JP6480788B2/en active Active
- 2015-12-30 CN CN201511026803.5A patent/CN106041833B/en active Active
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2016
- 2016-04-06 DE DE102016004193.5A patent/DE102016004193B4/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599537A1 (en) * | 1992-11-23 | 1994-06-01 | Black & Decker Inc. | Rotary hammer with a pneumatic hammer mechanism |
| JP2000033507A (en) * | 1998-07-16 | 2000-02-02 | Ryobi Ltd | Striking force adjusting mechanism of hammer drill |
| CN100409984C (en) * | 2002-11-20 | 2008-08-13 | 株式会社牧田 | Percussion drill |
| WO2015029660A1 (en) * | 2013-08-30 | 2015-03-05 | 日立工機株式会社 | Boring tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108724112A (en) * | 2017-04-18 | 2018-11-02 | 株式会社牧田 | Hammer tool |
| CN113474125A (en) * | 2019-03-28 | 2021-10-01 | 工机控股株式会社 | Impact working machine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016004193A1 (en) | 2016-10-13 |
| CN106041833B (en) | 2020-07-17 |
| DE102016004193B4 (en) | 2022-04-07 |
| JP6480788B2 (en) | 2019-03-13 |
| JP2016198829A (en) | 2016-12-01 |
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