CN100345661C - Electric driver - Google Patents
Electric driver Download PDFInfo
- Publication number
- CN100345661C CN100345661C CNB2004100942038A CN200410094203A CN100345661C CN 100345661 C CN100345661 C CN 100345661C CN B2004100942038 A CNB2004100942038 A CN B2004100942038A CN 200410094203 A CN200410094203 A CN 200410094203A CN 100345661 C CN100345661 C CN 100345661C
- Authority
- CN
- China
- Prior art keywords
- mentioned
- driven
- driven roller
- input component
- maintaining part
- 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.)
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Links
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 6
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0042—Connection means between screwdriver handle and screwdriver shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
-
- 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
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
Abstract
To transmit fixed turning force without abrasion of parts in simple structure for applying the rotational driving force larger in loosening a screw than that in thread fastening to a driver bit in a turning force transmitting means of a motor-driven screw driver. This motor-driven screw driver includes: a rotary input member 106 driven to rotate by a driving motor; a driving roller 108 to which the rotational driving force is transmitted; a rotary output member 110 connected to a bit holder to be driven to rotate; and a driven ball 112 held on the rotary output shaft and engaged with the driving roller 108 to transmit the rotational driving force to the rotary output shaft. The driving roller 108 is displaced to a rotary input member 106 depending on the normal rotation of the rotary driven input member round the central axis of rotation and the reversion, and engaged with the driven ball 112 at different points, thereby varying the rotational driving force transmitted from the rotary input member 106 through the driving roller, and the driven roller to the rotary output member 110.
Description
Technical field
The present invention relates to a kind of electric screw driver, especially relate to following such electric screw driver, promptly transmit the rotary actuator of rotary driving force to the cutter head clamper from drive motors, when unclamping screw (reverse), when comparing, bigger rotary driving force can be sent on the cutter head clamper with this electric screw driver trip bolt (just changeing).
Background technology
Electric screw driver is compared during with trip bolt when unclamping the screw of having tightened at first, must apply bigger rotary driving force.On the other hand, when trip bolt, if apply excessive rotary driving force, screw itself and by the fastening part of described screw, and the basis of electric screw driver can produce excessive power on one's body, thereby exist they are caused the danger of damage.
Therefore, the rotary actuator that usually transmits rotary driving force by drive motors to driver bit in the electric screw driver has and is limited in torque limiting apparatus below the regulation with being sent to rotary driving force on the driver bit.
Fig. 1 shows an example of this torque limiting apparatus.Have in this torque limiting apparatus 10: rotation drives the cylindric part 12 that links to each other with driver bit, accept rotary driving force and drive shaft rotating 14 from drive motors, the locational roller 16 of opposition side on a pair of diametric(al) that is arranged on this driving shaft is arranged on a pair of ball 20 in the locational radially through hole of opposition side on the diametric(al) of being located at cylindric part 12 and pushes the spring assembly (not shown) of this ball by means of regulation elastic force along direction in the radial direction.During trip bolt, driving shaft 14 rotates in the counterclockwise direction, above-mentioned roller 16 is fastened on (this roller existence is concerned by the position shown in the solid line relatively) above-mentioned ball 20, and driving shaft 14 is rotated in a clockwise direction when loosening screw, roller 16 is fastened on (there is position relation shown by dashed lines in same relatively roller) above-mentioned ball 20, thereby rotary driving force is delivered on the above-mentioned driver bit by same ball 20, cylindric part 12.If surpass setting to the rotary driving force that cylindric part 12 transmits by driving shaft 14, ball 20 is just resisted the elastic force F that radially inwardly is applied on it, and move to radial outside, driving shaft dallies thus, cuts off the transmission (for example referring to Patent Document 1) of rotary driving force.Though this torque limiting apparatus is torque limiting like this, but fastening or when loosening screw, because roller is identical with respect to (the pivot axis of self-powered moving axis) radial position of ball engaging, therefore the rotary driving force maximum that can transmit is also identical, thus can not satisfy above-mentioned when unclamping screw generation than the requirement of large driving force.
Be directed to this, have following form: rotating driveshaft 14 forms shape shown in Figure 2, whereby, when driving shaft 14 is rotated in a clockwise direction for loosening screw, compare when rotating in the counterclockwise direction for trip bolt with driving shaft 14, as shown in the figure, can be by means of this rotating driveshaft be fastened in the radial position of separating from the rotary middle spindle of same rotating driveshaft 14 with respect to the clamped position of ball 20, thus bigger rotary driving force is delivered to (for example patent documentation 2) on this ball 20.
In this structure, if use this drill bit a period of time, will produce wearing and tearing on rotating driveshaft 14 and snap portions ball 20, therefore their clamped position will reduce to the rotary driving force that ball 20 applies from rotating driveshaft just to the radially inner side displacement.
And then, exist such form to use in the mono-directional overrun clutch process only when loosening screw, this rotating driveshaft does not dally, from rotating driveshaft required rotary driving force is passed to ball, but in this case, if this screw that loosens is fastening excessive, will burn out drive motors, this screwdriver of not stall of operator will be injured and produce dangerous.
[patent documentation 1] special fair 2-42631
[patent documentation 2] real fair 2-12053
Summary of the invention
Purpose of the present invention just provides a kind of electric screw driver of being furnished with the rotary actuator that can address the above problem.
That is, the invention provides a kind of electric screw driver, this electric screw driver comprises: the fixing cutter head clamper that keeps driver bit;
Be used for rotary driving force with drive motors and be delivered to rotary actuator on the cutter head clamper, it is characterized in that,
Rotary actuator has:
The rotation input component of accepting the rotary driving force of drive motors and rotatablely moving;
Be fastened on the driven roller of rotary driving force on this rotation input component, from this rotation input component transmission around this rotation input component pivot axis;
Be connected, can be simultaneously the rotation output of center rotation with above-mentioned cutter head clamper driving with the above-mentioned pivot axis of above-mentioned rotation input component;
Remain on this rotation output and be fastened on the above-mentioned driven roller, and transmit rotary driving force, this rotary driving force is delivered to driven ball on this rotation output from this driven roller,
When above-mentioned driven roller is central forward rotation and counter-rotating at above-mentioned rotation driving input component with above-mentioned rotary middle spindle line, with respect to the displacement of above-mentioned rotation input component, and above-mentioned relatively driven ball is fastened on from the different direction position of above-mentioned pivot axis, whereby, make the rotary driving force difference of transmitting to above-mentioned rotation output by this driven roller, driven ball from above-mentioned rotation input component.
According to this electric screw driver, because can be when being rotated in the forward and during counter-rotating, change the rotary driving force that transmits to driven ball from driven roller, so when screw is fastening and screw when loosening, just can produce suitable rotary driving force.In addition, owing to transmit rotary driving force, so just can reduce the minimizing of the above-mentioned rotary driving force that causes because of wearing and tearing by means of the engaging of driven roller and ball.
Specifically, it is the cylindric portion of concentric circles that the rotation output has peripheral with the rotation input component, keep this driven ball by means of this cylindric, when driven roller was rotated in the forward with counter-rotating at above-mentioned rotation input component, can be fastened on above-mentioned rotary middle spindle line with above-mentioned driven ball be in the different radial position at center.
In addition, more particularly, the rotation input component comprises the roller maintaining part, and this roller maintaining part has: be rotated in the forward and driven roller and driven ball keep first maintaining part of this driven roller when fastening at this rotation input component; Second maintaining part that when this rotation input component counter-rotating and driven roller and driven ball fasten, keeps this driven roller; And the displacement portion that allows driven roller displacement between first maintaining part and second maintaining part.
As other embodiment, above-mentioned rotation input component has with above-mentioned pivot axis form right angle and faces first of above-mentioned rotation output;
Above-mentioned rotation output be have towards and be parallel to second above-mentioned first discoid parts;
This rotation output has the through hole that extends to the face of opposition side from above-mentioned second face, keeps above-mentioned driven ball in this through hole, and from above-mentioned second towards above-mentioned first face portion give prominence to;
Above-mentioned first keeps above-mentioned driven roller and makes the radially setting of the axis of driven roller along above-mentioned pivot axis, and this driven roller can engage with above-mentioned driven ball on different positions with above-mentioned second identity distance when being rotated in the forward with counter-rotating.
More particularly, the rotation input component comprises the roller maintaining part, and this roller maintaining part has:
Be rotated in the forward and driven roller and driven ball keep first maintaining part of this driven roller when fastening at this rotation input component;
Second maintaining part that when this rotation input component counter-rotating and driven roller and driven ball fasten, keeps this driven roller;
And the displacement portion that allows driven roller displacement between first maintaining part and second maintaining part,
The driven roller that remains in second maintaining part is in more approaching above-mentioned second position than the driven roller that remains in first maintaining part, and is fastened on the driven ball.
More concrete is, above-mentioned driven ball have from this rotation output above-mentioned second with and the outstanding size of the face of opposition side, can push driven ball with predetermined elastic force to above-mentioned driven roller by means of the ball pushing portion that sets in abutting connection with the face of above-mentioned opposition side.
The accompanying drawing summary
Fig. 1 is the cutaway view that revolving force transmission device major part in the existing electric screw driver is shown.
Fig. 2 is the cutaway view that the revolving force transmission device major part of other form in the existing electric screw driver is shown.
Fig. 3 is the longitudinal sectional view of electric screw driver among the present invention.
Fig. 4 is an A-A line cutaway view among Fig. 3, shows the state of screw when fastening.
Fig. 5 is above-mentioned A-A line cutaway view, the state when showing screw and loosening.
Fig. 6 is the longitudinal sectional view of other form of implementation of electric screw driver of the present invention.
Fig. 7 is a B-B line cutaway view among Fig. 6.
Symbol description
100 electric screw drivers, 102 cutter head clampers, 102-1 centre bore, 102-2 locks ball, 102-3 ball, 104 rotary actuators, 105 decelerators, 106 rotation input components, 106-1 roller maintaining part, 106-2 first maintaining part, 106-3 second maintaining part, 106-4 displacement portion, first of 106-5,108 driven rollers, 110 rotation outputs, the cylindric portion of 110-1,110-2 is through hole radially, second of 110-3, the 110-4 through hole, 112 driven balls, 120 cylinder cover bodies, 124 spring regulating devices, 124-1 cylindrical portion, the 124-2 conical surface, 124-3 ball thrust piece, 124-4 helical spring, 124-5 nose circle barrier part, 124-6 spring thrust piece, 124-7 spring end fastener, 124-8 spring regulating part, 130 alignment pins, a radial position, b radial position, F elastic force, α angle, β angle
The specific embodiment
(Fig. 3-7) hereinafter with reference to the accompanying drawings illustrates the form of implementation of the electric screw driver among the present invention.
Fig. 3 is the longitudinal sectional view of electric screw driver 100 among the present invention.Fig. 4 is an A-A line cutaway view among Fig. 3, shows the state of screw when fastening.And Fig. 5 shows the state when screw loosens among Fig. 3.
As shown in the figure, electric screw driver 100 comprise (what insert from right-hand member shown in Fig. 3) be used for fixing the cutter head clamper 102 that keeps the driver bit (not shown) and (what be provided with at left end shown in Fig. 1) in the future the rotary driving force of self-driven motor (not shown) be delivered to the rotary actuator 104 on the cutter head clamper 102.
In Fig. 3,120 is the cylindrical shell body of electric screw driver, and the front end of this cylindrical shell body is provided with spring regulating device 124, is used to regulate radially inside elastic force towards driven ball 112.This spring regulating device 124 comprises: at cylindrical shell body 120 front ends with the fastening cylindrical portion 124-1 of screw; Can be in this cylindrical portion at axis direction motion ball thrust piece 124-3 that be provided with, that have the conical surface 124-2 that is fastened on the driven ball 112; Shown in Fig. 3, impose on the helical spring 124-4 of this ball thrust piece 124-3 spring pressure left; Shown in Fig. 3, the right-hand member of cylindrical portion 124-1 be fastened on screw and the co-axially fixed nose circle barrier part of this cylindrical portion 124-5 on, move at axis direction by means of screw thread rotation and spring regulating part 124-8 on helical spring 124-4, apply suitable pushing force by spring thrust piece 124-6 and spring end fastener 124-7.The driver bit (not shown) inserts from the right side in the centre bore 102-1 of cutter head clamper 102, and 102-2 fixes by the locking ball.In case be inserted in the cutter head clamper 102, the alignment pin 130 that extends along this electric screw driver central axis is pushed left, acts on the starting switch of drive motors.As mentioned above, when trip bolt, resist fastening power and become big, if the power that is delivered on the driven roller 108 from rotation input component 106 surpasses above-mentioned elastic force F at radially outer component, driven ball 112 just radially outward moves, follow in this, ball thrust piece 124-3 (shown in Fig. 3) moves right, near this ball thrust piece right part inclined plane inwardly pushes ball 102-3 in radial direction, thus, by pushing alignment pin 130 left, disconnect the starting switch of drive motors, thereby stop the driving of this electric screw driver.
Fig. 6 and Fig. 7 illustrate other form of implementation of electric screw driver among the present invention.
This electric screw driver basic structure is all identical, but transmission mechanism and the foregoing description of rotating the rotary driving force between input component 106 and the rotation output 110 are different.
That is, in this embodiment, rotation input component 106 has first (being dextrad face among Fig. 7) 106-5 towards rotation output 110, and this inner rotary output 110 is for having abreast towards discoid of second 110-3 of first 106-5.Rotation output 110 is formed with the through hole 110-4 that extends along above-mentioned rotation direction, and driven ball 112 remains in this through hole 110-4 movably.First 106-5 keeps driven roller 108, and the axis that makes this driven roller is along the radial direction that is the center with above-mentioned rotary middle spindle line.This driven roller 108 is fastened on the driven ball 112 at circumferencial direction along with the rotation of rotation input component 106.
Specifically, as shown in Figure 7, on first 106-5 of rotation input component 106, be formed with along extend as the circumferential direction of above-mentioned rotation, towards the roller maintaining part 106-1 of second opening, driven roller 108 rotatable settings in this roller maintaining part 106-1, its axis with the direction (being diametric(al)) of above-mentioned circumferencial direction quadrature on.The end of roller maintaining part 106-1 (at Fig. 7 downside), when rotation input component 106 is rotated counterclockwise when screw loosens, be fastened on the driven ball 112 by means of driven roller 108 and be fastened on this downside end, and be formed with and be used for and this driven ball 112 rotates the second maintaining part 106-3 that joins in the counterclockwise direction.In addition, the opposition side of roller maintaining part 106-1 (at Fig. 7 upside) end, when rotation input component 106 is rotated in a clockwise direction when screw is fastening, be fastened on the above-mentioned end by means of being fastened on the driven ball 112, and be formed with the first maintaining part 106-2 that joins by driven ball 112 and 110 rotations of rotation output.In this embodiment, the ball pushing 124-3 of portion is be adjacent to rotation output 110 discoid, applies elastic force on the axis direction driven ball 112 is pressed against mode on the driven roller 108 on this rotation output 110.
As shown in the figure, roller keeps groove bottom for what tilt, and the above-mentioned second maintaining part 106-3 is superficial, and the first maintaining part 106-2 is deep.Therefore, the driven roller 108 that remains among the second maintaining part 106-3 is compared with the driven roller 108 in remaining on the first maintaining part 106-2, the position is more near second 110-3, fasten with driven ball 112, therefore and identical among first embodiment, can in first maintaining part, apply bigger rotary driving force to rotating output 110.
Claims (6)
1. an electric screw driver comprises:
The fixing cutter head clamper that keeps driver bit;
Be used for rotary driving force with drive motors and be delivered to rotary actuator on the cutter head clamper,
It is characterized in that rotary actuator has:
The rotation input component of accepting the rotary driving force of drive motors and rotatablely moving;
Be fastened on the driven roller of rotary driving force on this rotation input component, from this rotation input component transmission around this rotation input component pivot axis;
Be connected, can be simultaneously the rotation output of center rotation with above-mentioned cutter head clamper driving with the above-mentioned pivot axis of above-mentioned rotation input component;
Remain on this rotation output and be fastened on the above-mentioned driven roller, and transmit rotary driving force, this rotary driving force is delivered to driven ball on this rotation output from this driven roller,
When above-mentioned driven roller is central forward rotation and counter-rotating at above-mentioned rotation driving input component with above-mentioned rotary middle spindle line, with respect to the displacement of above-mentioned rotation input component, and above-mentioned relatively driven ball is fastened on the different points, whereby, make from above-mentioned rotation input component the rotary driving force difference of transmitting to above-mentioned rotation output by this driven roller, driven ball around above-mentioned pivot axis.
2. electric screw driver as claimed in claim 1, it is characterized in that, above-mentioned rotation output has the cylindric portion that forms concentric circles with rotation input component periphery, above-mentioned driven ball is by this cylindric maintenance, when driven roller was rotated in the forward with counter-rotating at above-mentioned rotation input component, being fastened on above-mentioned rotary middle spindle line with above-mentioned driven ball was in the different radial position at center.
3. electric screw driver as claimed in claim 2 is characterized in that, the rotation input component comprises the roller maintaining part, and this roller maintaining part has:
Be rotated in the forward and driven roller and driven ball keep first maintaining part of this driven roller when fastening at this rotation input component;
Second maintaining part that when this rotation input component counter-rotating and driven roller and driven ball fasten, keeps this driven roller;
And the displacement portion that allows driven roller displacement between first maintaining part and second maintaining part.
4. electric screw driver as claimed in claim 1 is characterized in that, above-mentioned rotation input component has with above-mentioned pivot axis form right angle and faces first of above-mentioned rotation output;
Above-mentioned rotation output be have towards and be parallel to second above-mentioned first discoid parts;
This rotation output has the through hole that extends to the face of opposition side from above-mentioned second face, keeps above-mentioned driven ball in this through hole, and from above-mentioned second towards above-mentioned first face portion give prominence to;
Above-mentioned first keeps above-mentioned driven roller and makes the radially setting of the axis of driven roller along above-mentioned pivot axis, and this driven roller can engage with above-mentioned driven ball on different positions with above-mentioned second identity distance when being rotated in the forward with counter-rotating.
5. electric screw driver as claimed in claim 4 is characterized in that, the rotation input component comprises the roller maintaining part, and this roller maintaining part has:
Be rotated in the forward and driven roller and driven ball keep first maintaining part of this driven roller when fastening at this rotation input component;
Second maintaining part that when this rotation input component counter-rotating and driven roller and driven ball fasten, keeps this driven roller;
And the displacement portion that allows driven roller displacement between first maintaining part and second maintaining part,
The driven roller that remains in second maintaining part is in more approaching above-mentioned second position than the driven roller that remains in first maintaining part, and is fastened on the driven ball.
6. electric screw driver as claimed in claim 5, it is characterized in that, above-mentioned driven ball have from this rotation output above-mentioned second with and the outstanding size of the face of opposition side, the ball pushing portion that can be provided with by means of the face in abutting connection with above-mentioned opposition side pushes driven ball with predetermined elastic force to above-mentioned driven roller.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003390943A JP3992676B2 (en) | 2003-11-20 | 2003-11-20 | Electric screwdriver |
| JP2003390943 | 2003-11-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1657235A CN1657235A (en) | 2005-08-24 |
| CN100345661C true CN100345661C (en) | 2007-10-31 |
Family
ID=34718167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100942038A Active CN100345661C (en) | 2003-11-20 | 2004-11-19 | Electric driver |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP3992676B2 (en) |
| KR (1) | KR100556041B1 (en) |
| CN (1) | CN100345661C (en) |
| HK (1) | HK1080031B (en) |
| TW (1) | TWI253377B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5769385B2 (en) * | 2010-05-31 | 2015-08-26 | 日立工機株式会社 | Electric tool |
| DE102010030055A1 (en) * | 2010-06-15 | 2011-12-15 | Hilti Aktiengesellschaft | Electrically operated bolt gun and method for operating the bolt gun |
| TWI491477B (en) * | 2012-09-21 | 2015-07-11 | Nitto Kohki Co | Electric screwdriver |
| JP6482351B2 (en) | 2015-03-27 | 2019-03-13 | 日東工器株式会社 | Screwing member tightening tool |
| JP6591553B2 (en) * | 2015-08-31 | 2019-10-16 | 日東工器株式会社 | Power tools |
| KR102102106B1 (en) | 2015-12-25 | 2020-04-20 | 니토 코키 가부시키가이샤 | Threaded member tightening tool and drive time setting method for threaded member tightening tool |
| TWI702117B (en) * | 2019-08-07 | 2020-08-21 | 佳銘精密工業有限公司 | Torque joint structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4775269A (en) * | 1986-10-23 | 1988-10-04 | Hilti Aktiengesellschaft | Hand held tool with removable chuck |
| JPH0212053Y2 (en) * | 1984-03-23 | 1990-04-04 | ||
| JPH0242631B2 (en) * | 1982-03-15 | 1990-09-25 | ||
| CN2174300Y (en) * | 1993-09-02 | 1994-08-17 | 辛富荣 | Clutch for electric screwdriver |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2991002B2 (en) * | 1993-05-12 | 1999-12-20 | 日本電気精器株式会社 | Torque control mechanism for micro torque driver |
| JP2000190246A (en) * | 1998-12-21 | 2000-07-11 | Nakamura Seisakusho:Kk | Torque driver |
-
2003
- 2003-11-20 JP JP2003390943A patent/JP3992676B2/en not_active Expired - Lifetime
-
2004
- 2004-08-18 KR KR1020040064928A patent/KR100556041B1/en active IP Right Grant
- 2004-11-19 CN CNB2004100942038A patent/CN100345661C/en active Active
- 2004-11-19 TW TW093135651A patent/TWI253377B/en active
-
2006
- 2006-01-04 HK HK06100054.7A patent/HK1080031B/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0242631B2 (en) * | 1982-03-15 | 1990-09-25 | ||
| JPH0212053Y2 (en) * | 1984-03-23 | 1990-04-04 | ||
| US4775269A (en) * | 1986-10-23 | 1988-10-04 | Hilti Aktiengesellschaft | Hand held tool with removable chuck |
| CN2174300Y (en) * | 1993-09-02 | 1994-08-17 | 辛富荣 | Clutch for electric screwdriver |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1080031B (en) | 2008-06-06 |
| KR100556041B1 (en) | 2006-03-03 |
| KR20050049324A (en) | 2005-05-25 |
| TW200529987A (en) | 2005-09-16 |
| JP2005153033A (en) | 2005-06-16 |
| CN1657235A (en) | 2005-08-24 |
| HK1080031A1 (en) | 2006-04-21 |
| TWI253377B (en) | 2006-04-21 |
| JP3992676B2 (en) | 2007-10-17 |
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