CN1693034A - Hand machine tool with a hammer mechanism - Google Patents
Hand machine tool with a hammer mechanism Download PDFInfo
- Publication number
- CN1693034A CN1693034A CNA2005100712774A CN200510071277A CN1693034A CN 1693034 A CN1693034 A CN 1693034A CN A2005100712774 A CNA2005100712774 A CN A2005100712774A CN 200510071277 A CN200510071277 A CN 200510071277A CN 1693034 A CN1693034 A CN 1693034A
- Authority
- CN
- China
- Prior art keywords
- hammer
- elastic mechanism
- motion
- hand held
- cutter
- 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.)
- Pending
Links
- 230000033001 locomotion Effects 0.000 claims abstract description 29
- 238000009527 percussion Methods 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 241001397306 Proales Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- 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
-
- 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
- B25D2216/0015—Tools having a percussion-only 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
- B25D2216/0023—Tools having a percussion-and-rotation mode
-
- 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
- B25D2250/185—Pressure equalising means between sealed chambers
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
A hand machine tool is equipped with a hammer mechanism, which has a hammer ( 1 ) that moves axially back and forth in a guide tube ( 2 ); a spring mechanism ( 4 ) is provided, which exerts a force on the hammer ( 1 ) and can set the hammer ( 1 ) into a movement toward a tool ( 3 ) that can be inserted into the hand machine tool. The hammer mechanism produces a very high individual hammering energy at a relatively low hammering frequency by virtue of the fact that after each impact, the hammer ( 1 ) is set into a motion counter to the force of the spring mechanism ( 4 ) in order to stress this spring mechanism and after the stressing of the spring mechanism ( 4 ), the hammer ( 1 ) is abruptly released again so that it flies toward the tool ( 3 ).
Description
Technical field
The present invention relates to a kind of hand held power machine with percussion mechanism, especially hammer drill and/or jump bit, this percussion mechanism has one at a reciprocating hammer of guiding inner axial tube, wherein there is one hammer applied the elastic mechanism of power, can makes this hammer towards the direction motion that can be inserted in the cutter in the hand held power machine by it.
Background technology
This enforcement repeated impacts compression shock device motion, that be used for electropneumatic hammer drill and/or jump bit as what know from DE 198 10 088 C1, is made up of an eccentric driving device, a piston and a hammer.By these three elements one is rotatablely moved and to change ballistic motion into.Hammer is axially reaching motion backward forward as follows in guide pipe: make its proal piston by eccentric driving device, sealed the air cushion between piston and hammer, thus, this hammer freely cutter in being inserted in machine flies to.This hammer is transferred to cutter with its impact energy, and obtains a reciprocal momentum there.Simultaneously, piston makes it toward swivel motion by eccentric driving device, thus, forms certain vacuum in the air cushion between piston and hammer.In case piston arrives its reversal point, and hammer also flies to piston continuing, the air cushion between hammer and piston just compacted and be compressed thereupon, thereby when and then piston travelled forward again, this hammer flew to towards cutter forward with a more speed.In a this compression shock device, piston and hammer are with identical frequency movement.Big single-impact energy under little frequency of impact is impossible to this percussion mechanism.This is suitable for a so-called elastic bow-shaped percussion mechanism (Federbuegelschlagwerk) equally, as disclosed by EP 544 865 B1.Wherein make the angle Support of making by spring steel be in oscillating movement, and this spring steel drive hammer forward towards cutter or towards the drift motion that is arranged between cutter and the hammer by an eccentric driving device.The resilient energy of hammer will be stored in elastic bow-shaped, and be released again when advance the puck, as in a pneumatic percussion mechanism.
Summary of the invention
Task of the present invention is, the percussion mechanism of the described type of beginning is provided, and this percussion mechanism can realize by simple as far as possible technical measures, and can be implemented in big single-impact energy under the little frequency of impact by them.
According to the present invention, a kind of hand held power machine has been proposed, especially hammer drill and/or jump bit, has a percussion mechanism, this percussion mechanism has one at a reciprocating hammer of guiding inner axial tube, an elastic mechanism that hammer is applied power is wherein arranged, can make this hammer towards the direction motion that can be inserted in the cutter in the hand held power machine by it, wherein, have device, these devices make hammer in each power motion of impacting the back against elastic mechanism, so that load this elastic mechanism, and these devices suddenly discharge this hammer again after the elastic mechanism tensioning, and thus, this hammer moves towards the direction of cutter under the driving of elastic mechanism and flies to.
Thus, this hammer is impacting the back initiatively against the power motion of elastic mechanism at every turn, and this hammer has obtained very high energy for new impact after being released subsequently.
The favourable structure of the present invention can be obtained by the following description.
The suitable drive mechanism that is used to hammer into shape is set up one with hammer and is transmitted being connected of power after implementing one-shot, and make of the power motion of this hammer against elastic mechanism, and,, just unclamp the connection of this transmission power in case hammer reaches certain position in the motion against the power of elastic mechanism.
A favourable elastic mechanism is made up of a pressure accumulating chamber that is full of compressible medium, and this pressure accumulating chamber is arranged in the side that deviates from cutter that guide pipe is hammered into shape.This pressure accumulating chamber can be by gas, be preferably air or a kind of liquid is full of.This compressible medium---gas or liquid---is held and is for good and all remained in the pressure accumulating chamber, need only compensate certain leakage loss of pressure accumulating chamber.For this reason, a pump can be set, this pump is carried compressible medium to pressure accumulating chamber, with compensation leakage loss.The pump power of this pump can be very low, because need only compensate the leakage loss in pressure accumulating chamber.Such pump in light weight, that volume is little can be integrated in the hand held power machine.
Another kind of favourable elastic mechanism can be made up of one or more compression springs and/or tension spring, and these springs are supported on the hammer on the one hand, is supported on one on the other hand on convex shoulder fixing on the hammer direction of motion.
Description of drawings
By means of two embodiment shown in the diagram the present invention is explained in detail.Accompanying drawing is:
Fig. 1 has a percussion mechanism and one and is configured to the hammer drill of elastic mechanism of pressure accumulating chamber or a profilograph of jump bit.
Fig. 2 has the hammer drill of the elastic mechanism that a percussion mechanism and is made up of compression spring/tension spring or the profilograph of jump bit.
The specific embodiment
Fig. 1 shows a profilograph with hand held power machine of percussion mechanism.This hand held power machine for example is hammer drill and/or jump bit.Only show percussion mechanism in the schematic diagram of this hand held power machine, this percussion mechanism is a technical scheme of the present invention.Functional part all other, that be present in the hand held power machine in due form is all not shown.
Percussion mechanism is made up of a hammer 1 with known manner, and this hammer can be supported in a guide pipe 2 with moving back and forth.In the cutter holder of hand held power machine, plugging in a cutter 3, for example a drill bit or a hammer drill.If this hammer 1 flies to cutter 3 forward, this hammer just is transferred to cutter 3 with its impact momentum.Between cutter 3 and hammer 1 a drift (not shown) can also be set in guide pipe 2, this drift will be delivered on the cutter 3 from hammering 1 impact momentum that receives into shape.
Hammer 1, drive by an elastic mechanism travelling forward on the direction that is inserted in the cutter 3 in the hand held power machine and to cause that the power that acts on the hammer 1 of this elastic mechanism is pointed to direction of forward movement.This elastic mechanism is a pressure accumulating chamber 4 that is full of by a kind of compressible medium in the embodiment shown in fig. 1, and this pressure accumulating chamber is in a side that deviates from cutter of hammer 1 in guide pipe 2.This pressure accumulating chamber 4 forms the border by the sidewall of guide pipe 2, the hammer 1 that slides and by being arranged on rear wall 5 on the guide pipe 2, on the end that deviates from cutter 3 of guide pipe in guide pipe.Embed a seal 6 between the sidewall of hammer 1 and guide pipe 2, the sealing part stops compressible medium to leak out from pressure accumulating chamber 4.
This compressible medium can be a kind of liquid or a kind of gas.Preferably be full of pressure accumulating chamber 4 by air.In order to compensate leakage loss in pressure accumulating chamber 4, in this pressure accumulating chamber 4, connected a pump 7, can carry the compressible medium that is used to compensate leakage loss to pressure accumulating chamber 4 by this pump.Because need only compensate the leakage loss of compressible medium, thus one have just enough than the small-sized pump 7 of low pump work rate because this pump is in light weight and volume is little, so can at an easy rate it be installed in the hand held power machine.
Percussion mechanism has a drive unit, and this drive unit makes hammer 1 power motion against elastic mechanism in each impact tool 3 backs, and loads this elastic mechanism thus.The drive unit of being mentioned is such structure, and promptly this drive unit will hammer 1 again suddenly and discharge after elastic mechanism is loaded, so that is flown to tool orientation by the hammer 1 of elastic mechanism driving.Elastic mechanism not only is loaded by hammering 1 recoil strength into shape, and arrives high tensioning by independent drive unit on one's own initiative, and thus, hammer 1 obtains very high impulsive force by the release of elastic mechanism.Thus, even when relatively little frequency of impact, also can produce very high single-impact energy.
Below explain in detail in the embodiment shown in fig. 1 above-mentioned drive unit:
Be connected a bar 8 that extends with hammer 1 in its side that deviates from cutter 3 on guide pipe 2 longitudinal axis, the rear wall 5 that this bar passes guide pipe 2 is inserted into.Seal 9 between the perforation in the rear wall 5 of bar 8 and guide pipe 2 has prevented that compressible medium from overflowing from pressure accumulating chamber 4.Bar 8 stops near a driving wheel 10 in the pressure accumulating chamber outside, and this driving wheel can be around an axle rotation perpendicular to guide pipe 2 longitudinal axis.This driving wheel is by the axle 11 of a unshowned motor, for example by a Cylindrical gear actuator (not illustrating in the drawings) driven rotary.Driving wheel 10 is provided with a bearing pin 13, and it staggers with respect to the rotating shaft 12 of driving wheel, and this bearing pin erects from driving wheel 10 perpendicular to the drawing plane earth.The end towards driving wheel 10 of bar 8 is configured like this as hook portion 14, makes bearing pin 13 to be moved in the hook portion 14 in one of driving wheel 10 changes.Be in behind impact tool in swivel motion if hammer 1 into shape, then bar is together with the direction motion of hook portion 14 towards driving wheel 10.At this, the bearing pin 13 of the driving wheel 10 that is rotating slips in the hook portion 14, and on the direction of rotation of driving wheel 10---clockwise direction---in an embodiment drive bar 8 together with hammer 1, make the direction motion of hammer 1 thus, and be compressed at this at the medium of pressure accumulating chamber 4 towards the rear wall 5 of guide pipe 2.The thing followed is, the pressure towards the direction of cutter 3 that acts on the hammer 1 increases very doughtily.In case driving wheel 10 rotation half-turns and thus bearing pin 13 arrive one from guide pipe 2 position 13 farthest, bearing pin 13 just skids off again from hook portion 14.Carve at this moment, hammer 1 is released, and it is because the driving of the pressure of pressure accumulating chamber 4 forms a new impact to the direction motion of cutter 3.The rotary speed of driving wheel 10 can be regulated like this, and when hammer 1 when being in behind one-shot once more in swivel motion, the hook portion 14 of bar 8 ends is always just in time above the bearing pin 13 of driving wheel 10.
Replace a drive unit of trying hard to recommend moving hammer 1 against elastic mechanism also being set by the drive unit of bar 8 against the power pulling hammer 1 of elastic mechanism.So this drive unit can be arranged on the side towards cutter of hammer 1.Be different from exemplified be used to hammer into shape 1 drive unit, can also use other any mechanism, this mechanism makes hammer 1 motion in the single back of impacting of each of hammer against the power of elastic mechanism, with the tensioning elastic mechanism.
Figure 2 illustrates the cross sectional representation of a hand held power machine, wherein elastic mechanism is not to be made up of pressure accumulating chamber as the embodiment among Fig. 1, but has used one or more tension springs and/or compression spring therein.Except this elastic mechanism, all other function element is identical with the embodiment of above-mentioned Fig. 1, and Fig. 2 be provided with at the identical label of Fig. 1.
As shown in Figure 2, in the chamber of guide pipe 2, between the rear wall 5 of hammer 1 and guide pipe a compression spring 15 has been installed, this compression spring is supported on the rear wall 5 of guide pipe 2 on the one hand, is supported on the other hand on the hammer 1.As the substituting or replenishing of this compression spring 15, can also be at hammer 1 on the side of cutter 3, a tension spring 16 is set.This tension spring is connected with hammer 1 on the one hand, is connected with a convex shoulder of guide pipe 2 on the other hand.Replace only a compression spring and/or a tension spring, also can use a plurality of compression springs and/or tension spring, these springs are given and are hammered 1 required impulsive force into shape.
Claims (5)
1. hand held power machine, especially hammer drill and/or jump bit have a percussion mechanism, this percussion mechanism has an axial reciprocating hammer (1) in a guide pipe (2), and an elastic mechanism (4,15 that hammer (1) is applied power is wherein arranged, 16), can make this hammer (1) towards the direction motion that can be inserted in the cutter (3) in the hand held power machine, it is characterized in that by it, has device (8,10,13,14), these devices make hammer (1) impact the back against elastic mechanism (4 at every turn, 15,16) power motion is so that load this elastic mechanism, and these devices (8,10,13,14) at elastic mechanism (4,15,16) suddenly discharge this hammer (1) after the tensioning again, thus, this is hammered into shape at elastic mechanism (4,15,16) move towards the direction of cutter (3) under the driving and fly to.
2. according to the hand held power machine of claim 1, it is characterized in that these devices (8,10,13,14) form by a drive unit, this drive unit is set up one with hammer (1) and is transmitted being connected of power after hammer applies one-shot, and make of the power motion of this hammer against elastic mechanism (4,15,16), in case should the hammer (1) at it against elastic mechanism (4, arrived a definite position in the motion of power 15,16), this drive unit unclamps the connection of this transmission power again.
3. according to the hand held power machine of claim 1 or 2, it is characterized in that this elastic mechanism (4,15,16) is made up of a pressure accumulating chamber (4) that is full of compressible medium, this pressure accumulating chamber is in guide pipe (2) on the side that deviates from cutter (3) of hammer (1).
4. according to claim 3 hand held power machine, it is characterized in that this pressure accumulating chamber (4) can be by a pump (7) input compressible medium.
5. according to claim 1 or 2 hand held power machines, it is characterized in that, this elastic mechanism (14,15) form by one or more compression springs (15) and/or tension spring (16), these springs are supported on the hammer (1) on the one hand, be supported on one on the other hand on the fixing convex shoulder (5,17) on this hammer direction of motion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004022623A DE102004022623A1 (en) | 2004-05-07 | 2004-05-07 | Hand tool with a striking mechanism |
| DE102004022623.7 | 2004-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1693034A true CN1693034A (en) | 2005-11-09 |
Family
ID=34684124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100712774A Pending CN1693034A (en) | 2004-05-07 | 2005-05-08 | Hand machine tool with a hammer mechanism |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20050247462A1 (en) |
| CN (1) | CN1693034A (en) |
| DE (1) | DE102004022623A1 (en) |
| FR (1) | FR2869825A1 (en) |
| GB (1) | GB2413777A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949260A (en) * | 2010-07-22 | 2011-01-19 | 浙江师范大学 | Auxiliary hammer mechanism of percussive hammer capable of releasing after storing energy and energy-storage type percussive hammer |
| CN102275152A (en) * | 2010-06-10 | 2011-12-14 | 喜利得股份公司 | Power tool |
| WO2012024843A1 (en) * | 2010-08-27 | 2012-03-01 | Bosch Power Tools (China) Co., Ltd. | Striking mechanism |
| CN109070324A (en) * | 2016-08-31 | 2018-12-21 | 麦迪克药业分布有限责任公司 | Orthopedic impact device with the transmitting mass for transmitting controllable, repeatable and reversible impact force |
| CN110340852A (en) * | 2019-08-13 | 2019-10-18 | 油特机械工具（大连）有限公司 | A kind of rechargeable punching point rifle of high precision and long service life |
| CN112296947A (en) * | 2020-02-27 | 2021-02-02 | 杨新军 | Slider striking formula electric impact drill |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7198116B1 (en) * | 2005-10-25 | 2007-04-03 | Xiaojun Chen | Wholly air-controlled impact mechanism for high-speed energy-accumulating pneumatic wrench |
| DE102007000393A1 (en) * | 2007-07-19 | 2009-01-22 | Hilti Aktiengesellschaft | Hand tool with pneumatic percussion |
| US9931721B2 (en) * | 2009-12-18 | 2018-04-03 | Accelerated Fastening, LLC | Installation system for ceiling mounted items |
| US8695726B2 (en) | 2010-12-29 | 2014-04-15 | Medical Enterprises LLC | Electric motor driven tool for orthopedic impacting |
| EP3517064B1 (en) | 2010-12-29 | 2023-09-06 | DePuy Synthes Products, Inc. | Electric motor driven tool for orthopedic impacting |
| DE102012206445A1 (en) * | 2012-04-19 | 2013-10-24 | Hilti Aktiengesellschaft | machine tool |
| US11579344B2 (en) | 2012-09-17 | 2023-02-14 | Government Of The United States Of America, As Represented By The Secretary Of Commerce | Metallic grating |
| CN104227666A (en) * | 2013-06-20 | 2014-12-24 | 苏州宝时得电动工具有限公司 | Electric hammer |
| US11083512B2 (en) | 2016-08-31 | 2021-08-10 | DePuy Synthes Products, Inc. | Orthopedic device delivering a controlled, repeatable impact |
| SE545906C2 (en) * | 2022-12-09 | 2024-03-12 | Atlas Copco Ind Technique Ab | Hand-held percussive tool |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE20365E (en) * | 1937-05-18 | Portable power hammer | ||
| US1464824A (en) * | 1922-03-22 | 1923-08-14 | Electric Hammer Company | Electric hammer |
| US2145760A (en) * | 1936-07-24 | 1939-01-31 | Milwaukee Electric Tool Corp | Electric hammer |
| US2501542A (en) * | 1947-10-15 | 1950-03-21 | Harold S Sheldon | Hammer tool |
| US2655921A (en) * | 1951-07-09 | 1953-10-20 | Edward J Haboush | Vibratory tool for operating bone sets, bone chisels, and bone nail drivers |
| US2905034A (en) * | 1958-04-18 | 1959-09-22 | Ralph M Turner | Reciprocatory impact hand tool |
| GB1124527A (en) * | 1966-05-19 | 1968-08-21 | Sonomotive Engineers Ltd | Improvements in or relating to percussive tools and machines |
| US3599731A (en) * | 1969-12-01 | 1971-08-17 | Del Guy Inc | Drilling apparatus |
| DE2346519A1 (en) * | 1972-09-18 | 1974-04-11 | Technology Inc Const | HYDRAULICALLY OPERATED IMPACT DEVICE |
| US3887018A (en) * | 1974-01-25 | 1975-06-03 | Murray L Jayne | Fluid driven hammers |
| US4030556A (en) * | 1975-09-22 | 1977-06-21 | Phillips Raymond J | Miniature impact tool |
| DE3304916A1 (en) * | 1983-02-12 | 1984-08-16 | Robert Bosch Gmbh, 7000 Stuttgart | DRILLING HAMMER |
| DE3428333C1 (en) * | 1984-08-01 | 1986-03-13 | Byrne, Rodger J., 4005 Meerbusch | Electric tacker |
| DE58903355D1 (en) * | 1989-01-11 | 1993-03-04 | Sulzer Ag | HYDRAULIC DRILLING HAMMER. |
| DE19810088C1 (en) * | 1998-03-10 | 1999-08-26 | Bosch Gmbh Robert | Hammer and boring drill |
| DE19843642B4 (en) * | 1998-09-23 | 2004-03-25 | Wacker Construction Equipment Ag | Air spring hammer mechanism with return air spring |
-
2004
- 2004-05-07 DE DE102004022623A patent/DE102004022623A1/en not_active Withdrawn
-
2005
- 2005-05-03 FR FR0551153A patent/FR2869825A1/en not_active Withdrawn
- 2005-05-03 US US11/120,355 patent/US20050247462A1/en not_active Abandoned
- 2005-05-05 GB GB0509188A patent/GB2413777A/en not_active Withdrawn
- 2005-05-08 CN CNA2005100712774A patent/CN1693034A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275152A (en) * | 2010-06-10 | 2011-12-14 | 喜利得股份公司 | Power tool |
| CN102275152B (en) * | 2010-06-10 | 2016-08-03 | 喜利得股份公司 | Toolroom machine |
| CN101949260A (en) * | 2010-07-22 | 2011-01-19 | 浙江师范大学 | Auxiliary hammer mechanism of percussive hammer capable of releasing after storing energy and energy-storage type percussive hammer |
| CN101949260B (en) * | 2010-07-22 | 2013-07-24 | 浙江师范大学 | Auxiliary hammer mechanism of percussive hammer capable of releasing after storing energy and energy-storage type percussive hammer |
| WO2012024843A1 (en) * | 2010-08-27 | 2012-03-01 | Bosch Power Tools (China) Co., Ltd. | Striking mechanism |
| CN109070324A (en) * | 2016-08-31 | 2018-12-21 | 麦迪克药业分布有限责任公司 | Orthopedic impact device with the transmitting mass for transmitting controllable, repeatable and reversible impact force |
| CN109070324B (en) * | 2016-08-31 | 2023-02-17 | 德普伊新特斯产品公司 | Orthopedic impacting device with projectile mass that delivers controlled, repeatable and reversible impact forces |
| CN110340852A (en) * | 2019-08-13 | 2019-10-18 | 油特机械工具（大连）有限公司 | A kind of rechargeable punching point rifle of high precision and long service life |
| CN110340852B (en) * | 2019-08-13 | 2024-02-27 | 油特机械工具（大连）有限公司 | High-precision long-life rechargeable point punching gun |
| CN112296947A (en) * | 2020-02-27 | 2021-02-02 | 杨新军 | Slider striking formula electric impact drill |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004022623A1 (en) | 2005-12-08 |
| FR2869825A1 (en) | 2005-11-11 |
| GB0509188D0 (en) | 2005-06-15 |
| US20050247462A1 (en) | 2005-11-10 |
| GB2413777A (en) | 2005-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |