CN1283423C - Portable tool machine - Google Patents
Portable tool machine Download PDFInfo
- Publication number
- CN1283423C CN1283423C CNB021247870A CN02124787A CN1283423C CN 1283423 C CN1283423 C CN 1283423C CN B021247870 A CNB021247870 A CN B021247870A CN 02124787 A CN02124787 A CN 02124787A CN 1283423 C CN1283423 C CN 1283423C
- Authority
- CN
- China
- Prior art keywords
- hand held
- held power
- power machine
- described hand
- adjusting device
- 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.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims abstract 2
- 230000006835 compression Effects 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 3
- 238000009527 percussion Methods 0.000 description 9
- 230000002349 favourable effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000003467 diminishing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/04—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type
- F16D7/06—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with intermediate balls or rollers
- F16D7/10—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with intermediate balls or rollers moving radially between engagement and disengagement
-
- 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
- B25D16/003—Clutches specially adapted 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
-
- 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
- B25D2250/165—Overload clutches, torque limiters
-
- 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
- B25D2250/195—Regulation means
- B25D2250/205—Regulation means for torque
Abstract
The invention achieves better use of a machine tool when mounting various types of drills or drill crowns. A safety clutch 14 provided to a drive system contains two clutch elements for transmission of torque centering around a rotating axial line. The clutch elements are coupled through the medium of an engaging mechanism equipped with an engaging element 22. When the engaging element exceeds limit torque to release an engaging state, the limit torque can be adjusted to various values by using one or more operation means 36.
Description
Technical field
The present invention relates to a kind of hand held power machine.
Technical background
Still continue rotation uncontrollably for fear of the percussion drill that when stuck within the walls, grips when the circular drill bit of drill bit or insert by the user, known, the circular drill bit of drill bit or insert is connected with the drive unit of percussion drill by a safety clutch, in case drill bit is stuck, safety clutch is just thrown off immediately.
Hand held power machine by the band safety clutch of known a kind of this type of DE 3832202 C1.For transmit the moment of torsion safety clutch have one first radially internal clutch spare and surround the second clutch spare of first clutch spare, clutch device interconnects by the latch elements of making roller.Roller moves in gathering sill in first clutch spare.Be provided with a compression spring in gathering sill, it is bearing on the bottom land in its first end, and with its second end radially outward towards second clutch spare directive effect on roller, roller is pressed in the breach of second clutch spare.If surpass the moment of torsion of regulation, this post radially inwardly skids off from breach, presses to compression spring, and throws off safety clutch.Then roller skids off breach.
Summary of the invention
The present invention relates to a kind of hand held power machine that at least one is installed in the safety clutch in driving-chain in the housing that has, in order to transmit moment of torsion around rotating shaft, this safety clutch has at least two clutch elements, clutch element interconnects by the locking mechanism that has at least one latch elements, and locking mechanism is thrown off when surpassing a ultimate torque.
The present invention's suggestion, ultimate torque can be adjusted to different numerical value by means of at least one adjusting device.Though ultimate torque is less than the peak torque of obtaining by ergonomics in according to the hand held power machine of prior art, but adjust to greater than the maximum working torque that may occur, above in contrast to this scheme has such advantage, when promptly using hand held power machine with less possible operation torque, for example with the unit-type drill head that is no more than the 40mm diameter, ultimate torque then can be adjusted smallerly.Possible maximum working torque appears at when particularly piercing concrete with the circular drill bit of big insert.
Using when comparing less operation torque work with maximum working torque, under stuck situation, can avoid operator, material or locking mechanism to bear unnecessary high load capacity, and by avoiding unnecessary high reaction torque to improve security.Can reduce the particularly wearing and tearing in locking mechanism, and be issued to long service life in the situation that ultimate torque remains unchanged at least substantially.
Ultimate torque can by with different, do to such an extent that can adjust in professional's rational structure, for example use a kind of adjustable detent profile or the like.If but ultimate torque can adjust by a kind of pretightning force of locking mechanism that can be by the adjusting device adjustment, just can realize the simple especially solution of a kind of structure.Pretightning force can have been made level or step-less adjustment.
The pretightning force of latch elements produces by at least one compression spring in a kind of preferred structure of the present invention.It can make normal structure easily, and can reach little construction expenditure.
Compression spring its dorsad an end of latch elements preferably be bearing on the spring spindle, it can move by the outline of adjusting device.Spring spindle provide can with the advantage of the binding face of the outline optimum Match of adjusting device.Therefore compression spring can be by spring spindle safety, reliable and do not have fret wear ground by the adjusting device tensioning with loosen.On an end of compression spring, can reach binding face favourable, especially flat at it, make compression spring move reliably, and can avoid stuck or buckling by spring spindle for compression spring.
Adjusting device advantageously is made of a push rod, and at least one spring spindle is bearing on its shell surface, and its diameter with the contact zone of spring spindle in change.Adjusting device is built in the locking mechanism with can saving the position, and particularly arranges perpendicular to spring spindle.Can advantageously a plurality of spring spindles be set around adjusting device or push rod star, and by the adjusting device adjustment.
The present invention is suggestion secondly, and compression spring and spring spindle are contained in the hole of clutch element, reach favourable guiding thus, and can avoid the crooked and stuck of locking mechanism reliably.
The best pretension of adjusting device also can move by this cam on a cam, can be transformed into moving axially of adjusting device easily with rotatablely moving thus, and reach favourable gearratio.
Advise that in another kind of structure of the present invention cam can rotate by an external rotating bar that is contained on the machine hand tool housing.Can reach the easy operation of adjusting device with few construction expenditure.In order adjusting device to be fixed on the position of each hope, dwang can be done to such an extent that can snap in the different positions.
Can be rotated to support in the sealing thread spare that is screwed in the machine hand tool housing in a kind of preferred form of implementation cam.The possibility that this paper provides an a kind of revoling tube to carry out sealing simple in structure with respect to machine hand tool housing inside particularly can reach the pretension that adjusting device is pressed in the spring on the cam easily when sealing thread spare is installed.
Secondly suggestion, adjusting device can be handled by an actuator that is contained in the housing, can improve comfortableness thus.Actuator can be made pneumatic, electronic and/or electromagnetism, for example is made of a motor or an electrically-energized reciprocating motion electromagnet.
Actuator is according at least one operational factor control in a kind of preferred form of implementation.Can avoid operating mistake reliably, and can further improve comfortableness.
Especially operational factor is derived out by a method of operation of selecting, and that is to say, makes locking mechanism adjust to best pretightning force according to the difference of the method for operation of adjusting by actuator.But also can, measure operational factor by sensor.For example, that is to say, can reach especially flexibly with sensor and adjust according to the automatically best ultimate torque of adjusting of the difference of used bit diameter according to the difference of drill chuck position.
Description of drawings
Other advantages are obtained by following the description of the drawings.One embodiment of the present of invention have been represented in the drawings.Accompanying drawing, explanation and claims comprise many combination of features.The mode that the professional also can suit is considered these features separately and is merged into significant other combinations.
Accompanying drawing is as follows:
Fig. 1 is by a cross section of percussion drill that has a fastener on-off device of the locking mechanism with powerful pretension in driving-chain;
Fig. 2 is by a cross section of percussion drill of locking mechanism by having of Fig. 1 of weak pretension;
Fig. 3 is along the section of III-III line among Fig. 1;
Fig. 4 is along the section of IV-IV line among Fig. 2.
The specific embodiment
Fig. 1 represent by one do not draw in detail have a section that is installed in the percussion drill of the safety clutch of making the fastener on-off device 14 in the housing 44 inherent driving-chains.Safety clutch 14 has a clutch spur gear 16 and the clutch disk 20 that two clutch elements, have kayser cam 18, and it interconnects by locking mechanism and the latch elements 22 of making roller.Clutch spur gear 16 can be rotated to support on percussion drill one bevel gearing pinion 10 the shaft shoulder 24 and press fit between the clutch disk 20 of axle on 26.The pinion 10 of bevel gearing is shaped on axle 26, bevel gear 12 engagements of pinion and bevel gearing.
Roller partly stretches out groove 28, and is bearing on the precipitous edge 34 of kayser cam 18 (Fig. 3 and 4) at circumferencial direction when not overstepping the extreme limit moment of torsion.If overstep the extreme limit moment of torsion, be pressed in the groove 28 just roller overcomes the effect of compression spring 30, so the precipitous edge 34 of kayser cam 18 can leave roller.With respect to clutch disk 20 rotations, throw off by safety clutch 14 together with its kayser cam 18 for clutch spur gear 16.
The ultimate torque of opening safety clutch 14 depends on the locking mechanism pretightning force of compression spring 30 in other words.Spring force is determined by the decrement of compression spring 30, that is is had the position of the spring spindle 32 of compression spring 30 to determine by its upper support when roller snaps in.
The adjusting device 36 of making push rod is installed in the axle 26 of making hollow shaft, and is installed in axle 26 by one and is pressed on the cam 40 along the direction of pinion 10 dorsad towards the spring 38 of pinion 10 1 sides.Cam 40 is screwed on the sealing thread spare 42 of housing 44 one at a side bearing of push rod dorsad, can be rotated to support in the through hole of sealing thread spare 42 with a cylindrical part 52, and extend beyond sealing thread spare 42 and housing 44 with processing outer-hexagonal 54 thereon.For the sealing of the through hole in the sealing thread spare 42, the O shape of packing in the cannelure in the cylindrical part 52 of cam 40 circle 58.Sealing thread spare 42 passes through cam 40 and push rod preloading spring 38 when being screwed into.
On the outer-hexagonal 54 of hull outside cam 40, install one have one corresponding in the dwang 46 of hexagonal.The rotation of dwang 46 or cam 40 causes a lift 48 of push rod.Push rod towards a side of pinion 10 with the contact zone of spring spindle 32 in have the diminishing subregion 56 of pinion 10 directions on one day.
If pass through the cam 40 edges direction adjustment push rod of pinion 10 dorsad, spring spindle 32 radially moves inward so.Thereby reduce the pretightning force and the ultimate torque (Fig. 2 and 4) of compression spring 30.Percussion drill is adjusted to and is suitable for using the unit-type drill head that is not more than 40mm.
If make push rod to pinion 10 direction adjustment by cam 40, spring spindle 32 radially outward moves so.Thereby the pretightning force of intensified pressure spring 30 and ultimate torque (Fig. 1 and 3).Percussion drill is adjusted to and is suitable for adopting the circular drill bit of insert.
The figure mark
10 pinions, 28 grooves
12 bevel gears, 30 pressure springs
14 safety clutch, 32 spring spindles
16 clutch spur gears, 34 edges
18 kayser cams, 36 adjusting devices
20 clutch disks, 38 springs
22 latch elements, 40 cams
24 shaft shoulders, 42 sealing thread spares
26 44 housings
46 dwangs, 54 outer-hexagonals
48 lifts, 56 subregions
50 lubricant holes, 58 O shapes circle
52 cylindrical parts
Claims (11)
1. hand held power machine, it has at least one and is installed in the interior safety clutch in driving-chain (14) of a housing (44), this transmission has at least two clutch elements around the safety clutch of the moment of torsion of rotating shaft, they interconnect by the locking mechanism that has at least one latch elements (22), locking mechanism is thrown off when overstepping the extreme limit moment of torsion, this ultimate torque can be adjusted to different numerical value by means of at least one adjusting device (36), described ultimate torque can be by the pretightning force adjustment that can pass through the locking mechanism that adjusting device (36) adjusts, the pretightning force of described locking mechanism produces by at least one compression spring (30), and this compression spring is being to act on the direction radially with respect to described rotating shaft.
2. according to the described hand held power machine of claim 1, it is characterized in that: a side bearing of latch elements (22) is on a spring spindle (32) dorsad at it for compression spring (30), and spring spindle can move by the outline of adjusting device (36).
3. according to the described hand held power machine of claim 2, it is characterized in that: adjusting device (36) is made of a push rod, supports a spring spindle (32) on its shell surface at least, and with the contact zone of spring spindle (32) in its diameter change.
4. according to claim 2 or 3 described hand held power machines, it is characterized in that: compression spring (30) and spring spindle (32) are placed in the hole (28) of clutch element.
5. according to the described hand held power machine of claim 1, it is characterized in that: adjusting device (36) is pressed on the cam (40), and can move by this cam.
6. according to the described hand held power machine of claim 5, it is characterized in that: cam (40) can rotate by a dwang (46) that is installed in housing (44) outside.
7. according to the described hand held power machine of claim 6, it is characterized in that: cam (40) can be rotated to support in the sealing thread spare (42) that can be screwed in the housing (44).
8. according to the described hand held power machine of claim 1, it is characterized in that: adjusting device (36) can be handled by an actuator that is installed in the housing (44).
9. according to the described hand held power machine of claim 8, it is characterized in that: actuator is according at least one operational factor control.
10. according to the described hand held power machine of claim 9, it is characterized in that: operational factor is derived out by the method for operation of selecting.
11. according to the described hand held power machine of claim 9, it is characterized in that: operational factor is measured by sensor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10130520A DE10130520B4 (en) | 2001-06-25 | 2001-06-25 | Hand tool with a safety clutch |
| DE10130520.6 | 2001-06-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1393323A CN1393323A (en) | 2003-01-29 |
| CN1283423C true CN1283423C (en) | 2006-11-08 |
Family
ID=7689325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021247870A Expired - Fee Related CN1283423C (en) | 2001-06-25 | 2002-06-25 | Portable tool machine |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2003062768A (en) |
| CN (1) | CN1283423C (en) |
| CH (1) | CH695852A5 (en) |
| DE (1) | DE10130520B4 (en) |
| GB (1) | GB2378488B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101547771B (en) * | 2006-12-05 | 2012-09-05 | 罗伯特·博世有限公司 | Handheld tool |
| CN107661991A (en) * | 2016-07-29 | 2018-02-06 | 米夏埃尔·魏尼希有限公司 | Clamping device for cutter |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005026092A1 (en) * | 2005-06-07 | 2006-12-14 | Zeitlauf Gmbh Antriebstechnik & Co Kg | Freewheel assembly, for a rotating hub on a shaft, has radially sprung locking rollers on the shaft working with structured recesses at the hub inner circumference |
| WO2009029997A1 (en) * | 2007-09-06 | 2009-03-12 | Demain Technology Pty Ltd | A mechanical assembly for a power tool |
| KR100987087B1 (en) * | 2008-06-02 | 2010-10-11 | 한국과학기술연구원 | Device for genrating limit torque and rotating device using the same |
| DE102008002589A1 (en) * | 2008-06-24 | 2009-12-31 | Robert Bosch Gmbh | Machine tool with an adjustable coupling device and method of operation |
| DE102008002594A1 (en) | 2008-06-24 | 2009-12-31 | Robert Bosch Gmbh | Method for operating a machine tool with a coupling device |
| DE102008002593A1 (en) | 2008-06-24 | 2009-12-31 | Robert Bosch Gmbh | Machine tool with coupling device |
| DE102008002591A1 (en) * | 2008-06-24 | 2009-12-31 | Robert Bosch Gmbh | Coupling device for a machine tool and machine tool |
| JP5537055B2 (en) * | 2009-03-24 | 2014-07-02 | 株式会社マキタ | Electric tool |
| DE102010042981A1 (en) * | 2010-10-27 | 2012-05-03 | Robert Bosch Gmbh | Machine tool device |
| DE102013009891A1 (en) * | 2013-06-13 | 2014-12-18 | Andreas Stihl Ag & Co. Kg | Work tool with an internal combustion engine |
| CN104295620B (en) * | 2013-07-19 | 2021-01-19 | 南京德朔实业有限公司 | Clutch system and hand-held electric tool |
| CN105570339B (en) * | 2016-02-29 | 2017-12-01 | 沃得精机(中国)有限公司 | Toggle rod type underdrive smoothing press clutch |
| TWI659807B (en) * | 2018-08-16 | 2019-05-21 | 佳銘精密工業有限公司 | Torsion joint structure |
| CN113276071B (en) * | 2021-05-09 | 2023-09-12 | 江苏东成工具科技有限公司 | Two-in-one hand tool |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3093984A (en) * | 1960-12-01 | 1963-06-18 | Rca Corp | Coupling mechanism |
| AT243588B (en) * | 1963-05-20 | 1965-11-25 | Elmeg | Torque limiters for worm drives |
| GB1369207A (en) * | 1970-09-30 | 1974-10-02 | Bishop Eaves & Sons Ltd | Torque-limitting clutches |
| US4371354A (en) * | 1980-12-29 | 1983-02-01 | Titan Tool Co. | Controlled-torque apparatus |
| DE3205513C1 (en) * | 1982-02-16 | 1983-03-31 | Jean Walterscheid Gmbh, 5204 Lohmar | Torque limiting clutch |
| DE3235544A1 (en) * | 1982-09-25 | 1984-03-29 | Robert Bosch Gmbh, 7000 Stuttgart | Drill hammer |
| GB2131503A (en) * | 1982-12-09 | 1984-06-20 | Desoutter Ltd | Power tool with overload release clutch |
| DE3707051A1 (en) * | 1987-03-05 | 1988-09-15 | Bosch Gmbh Robert | Method for interrupting the drive activity, in particular at least the percussive-drive activity, of a powered hand tool |
| DE3832202C1 (en) * | 1988-09-22 | 1990-03-22 | Robert Bosch Gmbh, 7000 Stuttgart, De | Hand-held machine tool |
| DE19628945A1 (en) * | 1995-11-02 | 1997-05-07 | Bosch Gmbh Robert | Process for interrupting the driving activity of a hand tool, and hand tool working according to this process |
| DE29713253U1 (en) * | 1997-07-25 | 1998-11-19 | Beyert Thomas | Overload clutch |
| GB9716166D0 (en) * | 1997-08-01 | 1997-10-08 | British Autogard | Torque limiting clutch |
-
2001
- 2001-06-25 DE DE10130520A patent/DE10130520B4/en not_active Expired - Fee Related
-
2002
- 2002-03-08 CH CH00399/02A patent/CH695852A5/en not_active IP Right Cessation
- 2002-06-20 GB GB0214311A patent/GB2378488B/en not_active Expired - Fee Related
- 2002-06-25 JP JP2002185043A patent/JP2003062768A/en active Pending
- 2002-06-25 CN CNB021247870A patent/CN1283423C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101547771B (en) * | 2006-12-05 | 2012-09-05 | 罗伯特·博世有限公司 | Handheld tool |
| CN107661991A (en) * | 2016-07-29 | 2018-02-06 | 米夏埃尔·魏尼希有限公司 | Clamping device for cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10130520B4 (en) | 2008-10-30 |
| GB2378488A (en) | 2003-02-12 |
| GB0214311D0 (en) | 2002-07-31 |
| DE10130520A1 (en) | 2003-01-09 |
| JP2003062768A (en) | 2003-03-05 |
| CN1393323A (en) | 2003-01-29 |
| CH695852A5 (en) | 2006-09-29 |
| GB2378488B (en) | 2003-08-06 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061108 Termination date: 20140625 |
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| EXPY | Termination of patent right or utility model |