JPH02116405A - Hand tool - Google Patents
Hand toolInfo
- Publication number
- JPH02116405A JPH02116405A JP1242440A JP24244089A JPH02116405A JP H02116405 A JPH02116405 A JP H02116405A JP 1242440 A JP1242440 A JP 1242440A JP 24244089 A JP24244089 A JP 24244089A JP H02116405 A JPH02116405 A JP H02116405A
- Authority
- JP
- Japan
- Prior art keywords
- clutch
- locking
- hand
- parts
- hand tool
- 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
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- B25B23/141—Mechanical overload release couplings
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drilling And Boring (AREA)
- Percussive Tools And Related Accessories (AREA)
- Portable Power Tools In General (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、２つのクラッチ部分間でトルクを伝達するた
めの、駆動系に安全クラッチを備えた手持ち工具であっ
て、上記クラッチ部分かガイド内に保持された、ばね負
荷を受けた係止部材を介して相互に結合されており、超
過トルクを上回ると係止部材が外れるようＶＣなった形
式のものに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The invention relates to a hand tool with a safety clutch in the drive train for transmitting torque between two clutch parts, the invention being a hand tool with a safety clutch in the drive system, in which said clutch part is located in a guide. They are connected to each other via retained, spring-loaded locking members, and are of the VC type such that the locking members disengage when an excess torque is exceeded.
従来技術
ＤＥ−ＡＳＩ ９６５２７５明細書から手持ち工具用の
過負荷クラッチないしは安全クラッチが知られておシ、
このクラッチはばね負荷を受けた係止部を備えており、
かつ所要空間が僅かであることで優れている。しかしこ
のクラッチは切断力を外部から調節することができず、
ドリル作業に際して異なる要求例に適合不可である。From the prior art DE-ASI 965275, an overload clutch or safety clutch for hand tools is known.
This clutch has a spring-loaded lock,
It is also excellent in that it requires only a small amount of space. However, the cutting force of this clutch cannot be adjusted externally.
It is not possible to meet different requirements for drilling work.
発明が解決しようとする問題点
本発明の課題は、上記欠点を持ンｔない手持ち工具を提
供することである。Problem to be Solved by the Invention The object of the invention is to provide a hand-held tool which does not have the above-mentioned disadvantages.
問題点を解決するための手段
上記の課題を解決するための本発明の手段は、冒頭に記
載の形式の手持ち工具においてクラッチが多段に構成さ
れ、６個以上のクラッチ部分ヲ圃えており、これらのク
ラッチ部分の少なくとも１つが切換え装置によって接続
、切断可能であることである。Means for Solving the Problems The means of the present invention for solving the above-mentioned problems is such that, in the hand-held tool of the type described at the beginning, the clutch is constructed in multiple stages and has six or more clutch parts. At least one of the clutch parts can be connected and disconnected by a switching device.
発明の効果
本発明による手持ち工具は、クラッチの接続全所つため
の、係止力乞上回るトルク（以下で超過トルクと称する
）を、クラッチ金分解することなしに多段１昔で高める
ことができる、という利点を有している。このことは時
にハンマードリルで、種々の硬度の物質を作業する場合
にまたは種々の大きさの直径のドリル工具を使用する場
合（この場合には作業者は異なる大きさのトルクを保持
しなければならない）に有用でな
ある。極端Ｖ列ではクラッチは完全にロック可能であシ
、その結果工具で最大のモータ出力が作用する。クラッ
チの高いトルクへの調節は作業者によって意識的に行な
われ、かつ固定保持されなければならないので、工具の
ロックに際してクラッチの意想外の非応答は防止される
。Effects of the Invention The hand-held tool according to the present invention can increase the torque that exceeds the locking force (hereinafter referred to as excess torque) in order to tighten all the connection points of the clutch in multiple stages without disassembling the clutch metal. It has the advantage of This is sometimes true when working with materials of varying hardness with a hammer drill, or when using drill tools of varying diameters (in which case the operator must hold different magnitudes of torque). ) is useful. In the extreme V row, the clutch is fully lockable, so that maximum motor power is applied to the tool. The adjustment of the clutch to a high torque must be carried out consciously by the operator and must be held fixed, so that an unintentional non-response of the clutch upon locking of the tool is prevented.
クラッチの構造はきわめて簡単であり、かつ個別部分を
焼結または押出し成形によって製作し得るように構成さ
れている。このことについては例えば請求項５ＶＣよる
開いた係止みぞも寄与する。The construction of the clutch is extremely simple and is constructed in such a way that the individual parts can be manufactured by sintering or extrusion. For example, the open locking groove according to claim 5VC also contributes to this.
更に本発明は請求項２から１０に記載されている。クラ
ッチの構成を有利に簡単な安全クラッチに使用可能であ
る、それというのも製作・組立がきわめて簡単であり、
かつ作用能力が通常の係止部に比べて係止クールによっ
て高められているからである。特に請求項１０による切
換え装置も必要なときにクラッチをロックし得るように
簡単なりラッチに使用することができる。The invention is further defined in claims 2 to 10. The clutch configuration can advantageously be used as a simple safety clutch because it is extremely easy to manufacture and assemble.
This is also because the action ability is enhanced by the locking cool compared to a normal locking portion. In particular, the switching device according to claim 10 can also be used for simple latching in order to be able to lock the clutch when necessary.
実施例
第１図に示されたハンマードリルはモータと工具受容部
との間の駆動系に安全クラッチを備えている。安全クラ
ッチについては第２図に詳しく示されている。軸１に被
動部分であるクラツチ部分として第１のケージ２が相対
回動不能に固定されている。ケージは１個以上の半径方
向の切欠３を有している。切欠３内には圧縮ばね４およ
びロールから成る係止部材５が配置されている。圧縮ば
ね４は係止部材５を外方へ駆動部分であるクラッチ部分
６へ押圧している。Embodiment The hammer drill shown in FIG. 1 is equipped with a safety clutch in the drive system between the motor and the tool receiver. The safety clutch is shown in detail in FIG. A first cage 2 is fixed to the shaft 1 as a clutch part, which is a driven part, so as to be relatively unrotatable. The cage has one or more radial cutouts 3. A locking member 5 consisting of a compression spring 4 and a roll is arranged in the cutout 3. The compression spring 4 presses the locking member 5 outwardly against the drive part, the clutch part 6.
クラッチ部分６は外歯７を有し、この外歯は例えば駆動
モータ（図示せず）のピニオン８とチ
噛合っている。クララ／部分６は軸１に自在に回転可能
に、ストッパリング１０および第１のケージ２によって
第２の同形式のケージ１１を介して保持されている。第
２のケージ１１は同様に被動部分として働き、かつ軸１
上で自在に回転可能である。このケージも半径方向の切
欠１２を有し、切欠内には第１のケージ２の場合と同様
にばね負荷を受けた係止ロール１３が配置されている。The clutch part 6 has external teeth 7 which mesh, for example, with a pinion 8 of a drive motor (not shown). The clara/part 6 is held rotatably on the shaft 1 by a stop ring 10 and a first cage 2 via a second cage 11 of the same type. The second cage 11 likewise serves as a driven part and the shaft 1
It can be rotated freely on the top. This cage also has a radial recess 12 in which, as in the first cage 2, a spring-loaded locking roll 13 is arranged.
係止ロール５．１３はそれぞれクラッチ部分６に設けら
れた軸方向の、片側で開いた係止みぞ１４へ係合する（
第６図も参照）。両ケージ２．１１は軸方向の貫通孔１
５．１６を有し、これらの貫通孔は係止部材５．１３の
係止状態では合致するようになっている。貫通孔１５．
１６は切欠３相互間、切欠１２相互間にａｎ）、有利に
は切欠数と同数で存在する。クラッチ部分６も貫通孔１
５．１６と合致する貫通孔１７を有する。The locking rolls 5.13 each engage in an axial, one-sided, open locking groove 14 provided in the clutch part 6 (
(See also Figure 6). Both cages 2.11 have an axial through hole 1
5.16, and these through holes are adapted to coincide in the locked state of the locking member 5.13. Through hole 15.
16 are present between the notches 3 and between the notches 12 an), preferably in the same number as the number of notches. Clutch part 6 also has through hole 1
It has a through hole 17 matching 5.16.
貫通孔１５．１６．１７内へ切換え装置としてピン２０
が挿入可能である。ピンは支持プレート２１に固定され
ている。支持プレート２１はばね２２の作用下にあシ、
そのためにピン２０は休止位置ではケル２２０貫通孔１
５のみへ係合するにすぎない。切換え装置は操作部２３
を備え、この操作部を介して支持プレートを軸方向に押
しずらすことができる。操作部２３は有利には手持ち工
具ケーシングの外部へ導き出され、外部から操作可能で
ある。Pin 20 as a switching device into the through hole 15.16.17
can be inserted. The pin is fixed to a support plate 21. The support plate 21 is recessed under the action of a spring 22;
For this purpose, the pin 20 is in the rest position through the kel 220 through hole 1.
It only engages with 5. The switching device is the operation section 23
The support plate can be pushed and moved in the axial direction via this operating section. The actuating part 23 is preferably led outside the hand tool housing and can be operated from the outside.
安全クラッチを備えた機械の基本的な作用は従来公知で
ある。ピン２０の第２図に示された位置において、トル
クはクラッチ部分６から係止ロール５およびケージ２の
みを介して軸１へ伝達される。ケージ１１はクラッチ部
分６と一緒に軸１上で自由に回転する。クラッチはこの
位置で手待ち工具の通常の使用（小寸法から中寸法のド
リル直径）で使用でき、かつ安全クラッチにつ・ρて低
い応答量を与える。The basic operation of machines with safety clutches is known from the prior art. In the position of the pin 20 shown in FIG. 2, torque is transmitted from the clutch part 6 to the shaft 1 only via the locking roll 5 and the cage 2. The cage 11 rotates freely on the shaft 1 together with the clutch part 6. The clutch can be used in this position for normal hand tool use (small to medium drill diameters) and provides a low response amount for the safety clutch.
操作部２３を第２図でみて下から押し、これにより支持
プレート２１をクラッチの方へ押しずらすと、ピン２０
は付加的に貫通孔１６へ係合し、これにより２つのケー
ジ２．１１は相対回動不能に連結される。この位置では
第１のケージ２のトルクも係止ロール５を介して、第２
のケージ１１のトルクも係止ロール１３＆介して協働し
、このことにより安全クラッチとしてより高い切断力が
与えられる。これは厳しい使用条件のためにクラッチの
超過トルクを高めるが、ロックの場合のようにクラッチ
の切断が完全に阻止される訳ではない。この位置では・
・ンマ〜ドリルにおいて例えば大きな外径のビットクラ
ウンを機械の保持に大きな力の使用下で使用することが
できる。操作部２３を解除すると、その都度当初の低い
超過トルクが再度得られる。When the operating portion 23 is pushed from below as seen in FIG. 2 and the support plate 21 is pushed toward the clutch, the pin 20
additionally engages in the through hole 16, whereby the two cages 2.11 are connected in a rotationally fixed manner. In this position, the torque of the first cage 2 is also transferred to the second cage via the locking roll 5.
The torque of the cage 11 also cooperates via the locking roll 13, which provides a higher cutting force as a safety clutch. This increases the excess torque of the clutch due to severe service conditions, but does not completely prevent clutch disengagement as in the case of a lock. At this position...
- In drills, for example, bit crowns with a large external diameter can be used with large forces for holding the machine. When the actuator 23 is released, the initial low excess torque is obtained again each time.
図示されていない第６の位置ではピン２０は更にクラッ
チ部分６へも係合し、そのためにクラッチはロックされ
、もはや係止は外されない。In a sixth position, not shown, the pin 20 also engages the clutch part 6, so that the clutch is locked and no longer disengaged.
したがってクラッチの作用は失なわれる。The action of the clutch is therefore lost.
２つの被動部分２．１１ではなく、１つの、または２つ
よりも多くの部分を使用してもよい。Instead of two driven parts 2.11, one or more than two parts may be used.
すなわち付加的なトルク値を調節することができる。複
数の被動部分の代わりに複数の駆動部分を設けることも
でき、この場合には駆動部分は有利には各被動部分と協
働する。更に本発明は半径方向で働く係止部材に限定さ
れるものではなく、軸方向で働くクラッチでも使用する
ことができる。各クラッチ部分２．１１の超過トルクは
別個に係止ロールの数（例えば、２個、６個、４個、６
個）、圧縮ばねのばね力および係止みぞ１４の斜角でも
って調節することができる。This means that additional torque values can be adjusted. Instead of a plurality of driven parts, it is also possible to provide a plurality of drive parts, in which case the drive part preferably cooperates with each driven part. Furthermore, the invention is not limited to radially acting locking members, but can also be used with axially acting clutches. The excess torque of each clutch part 2.11 is determined separately by the number of locking rolls (e.g. 2, 6, 4, 6
), the spring force of the compression spring and the oblique angle of the locking groove 14 can be adjusted.
第１図はハンマードリルを示した図、第２図は安全クラ
ッチの第６図の１−１線に沿った断面図、第６図は第２
図Ｏｎ −ｙｍに沿った断面図である。
１・・・軸、２．１１・・・ケージ、３．１２・・・切
欠、４・・・圧縮ばね、５．１３・・・係止ロール、６
・・・クラッチ部分、７・・・外歯、８・−・ビニオン
、１０．・。
ストッパリング、１４・・・係止みぞ、１５．１６．１
７・・・貫通孔、２０・−・ピン、２１・・・支持プレ
ート、２２・・・ばね、２３・・・操作部。
２．６．１１ クラッチ部分
２０．２１ 切換え装置Figure 1 is a diagram showing the hammer drill, Figure 2 is a sectional view of the safety clutch taken along line 1-1 in Figure 6, and Figure 6 is a diagram showing the safety clutch.
FIG. 2 is a sectional view along the diagram On-ym; DESCRIPTION OF SYMBOLS 1... Shaft, 2.11... Cage, 3.12... Notch, 4... Compression spring, 5.13... Locking roll, 6
... Clutch part, 7... External tooth, 8... Binion, 10.・. Stopper ring, 14...Latching groove, 15.16.1
7...Through hole, 20...Pin, 21...Support plate, 22...Spring, 23...Operation unit. 2.6.11 Clutch part 20.21 Switching device
Claims (1)
駆動系に安全クラッチを備えた手持ち工具であつて、上
記クラッチ部分がガイド内に保持された、ばね負荷を受
けた係止部材を介して相互に結合されており、超過トル
クを上回ると係止部材が外れるようになつた形式のもの
において、クラッチが多段に構成され、３個以上のクラ
ッチ部分（２、６、１１）を備えており、これらのクラ
ッチ部分の少なくとも１つ（１１）が切換え装置（２０
、２１）によつて接続、切断可能であることを特徴とす
る、手持ち工具。 ２、切換え装置（２０、２１）が操作部（２３）を解除
したときに自動的に戻るようになつている、請求項１記
載の手持ち工具。 ３、係止部材（５、１３）が片側で開いた係止みぞ（１
４）へ係合している、請求項１または２記載の手持ち工
具。 ４、係止部材が係止ロールまたは係止ローラ（５、１３
）から成り、かつ係止みぞ（１４）と線接触している、
請求項１から３までのいずれか１項記載の手持ち工具。 ５、複数の同形式のクラッチ部分（２、１１）が対応す
るクラッチ部分（６）内に配置されている、請求項１か
ら４までのいずれか１項記載の手持ち工具。 ６、クラッチ部分（６）がモータのピニオン（８）と噛
合い、かつ自在に回転可能に軸 （１）に配置されており、軸に他方のクラッチ部分（２
）の１つが相対回動不能に固定されている、請求項５記
載の手持ち工具。 ７、クラッチ部分（２、６、１１）が貫通孔（１５、１
６、１７）を有し、貫通孔が係止部材（５、１３）の係
止状態で合致するようになつている、請求項１から６ま
でのいずれか１項記載の手持ち工具。 ８、各クラッチ部分に係止部材（５、１３）と同数の貫
通孔（１５、１６、１７）が設けられている、請求項７
記載の手持ち工具。 ９、切換え装置がピン（２０）を備え、ピンが貫通孔（
１５、１６、１７）内へ挿入可能である、請求項７記載
の手持ち工具。 １０、２つのクラッチ部分間でトルクを伝達するための
駆動系に安全クラッチを備えた手持ち工具であつて、上
記クラッチ部分がガイド内に保持された、ばね負荷を受
けた係止部材を介して相互に結合されており、超過トル
クを上回ると係止部材が外れるようになつた形式のもの
において、クラッチが切換え装置を備え、この切換え装
置によつて駆動部分であるクラッチ部分（６）が被動部
分と相対回動不能にロックすることができることを特徴
とする、手持ち工具。[Claims] 1. For transmitting torque between two clutch parts,
A hand-held tool with a safety clutch in the drive system, the clutch parts being interconnected via a spring-loaded locking member held in a guide and locking when an excess torque is exceeded. In the type in which the member is detachable, the clutch is configured in multiple stages and includes three or more clutch parts (2, 6, 11), and at least one of these clutch parts (11) is switched. Equipment (20
, 21). 2. Hand-held tool according to claim 1, characterized in that the switching device (20, 21) automatically returns when the operating element (23) is released. 3. The locking member (5, 13) has a locking groove (1) open on one side.
4). The hand tool according to claim 1 or 2, wherein the hand tool is engaged with 4). 4. The locking member is a locking roll or locking roller (5, 13
) and in line contact with the locking groove (14),
Hand tool according to any one of claims 1 to 3. 5. Hand tool according to claim 1, characterized in that a plurality of identical clutch parts (2, 11) are arranged in corresponding clutch parts (6). 6. A clutch part (6) meshes with the pinion (8) of the motor and is arranged on the shaft (1) so as to be freely rotatable, and the other clutch part (2
6. The hand-held tool according to claim 5, wherein one of the members (1) is fixed so as not to be relatively rotatable. 7. The clutch part (2, 6, 11) has a through hole (15, 1
7. Hand tool according to claim 1, characterized in that the through-holes are adapted to coincide in the locked state of the locking elements (5, 13). 8. Claim 7, wherein each clutch portion is provided with the same number of through holes (15, 16, 17) as the locking members (5, 13).
Hand tools listed. 9. The switching device includes a pin (20), and the pin is inserted into the through hole (
8. A hand tool according to claim 7, which is insertable into a hand tool (15, 16, 17). 10. A hand tool with a safety clutch in the drive system for transmitting torque between two clutch parts, said clutch part via a spring-loaded locking member held in a guide. In the case where the clutches are connected to each other and the locking member is released when an excess torque is exceeded, the clutch is equipped with a switching device, and this switching device causes the clutch part (6), which is the driving part, to be driven. A hand-held tool, characterized in that it can be locked against rotation relative to its parts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883832202 DE3832202C1 (en) | 1988-09-22 | 1988-09-22 | Hand-held machine tool |
| DE3832202.1 | 1988-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02116405A true JPH02116405A (en) | 1990-05-01 |
Family
ID=6363487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1242440A Pending JPH02116405A (en) | 1988-09-22 | 1989-09-20 | Hand tool |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH02116405A (en) |
| CH (1) | CH680746A5 (en) |
| DE (1) | DE3832202C1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009504419A (en) * | 2005-08-08 | 2009-02-05 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Electric tool machine and overload prevention device |
| JP2010137356A (en) * | 2002-09-13 | 2010-06-24 | Black & Decker Inc | Rotary tool |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4405155A1 (en) * | 1994-02-18 | 1995-08-24 | Renk Tacke Gmbh | Two stage safety clutch for shaft |
| DE19903863A1 (en) * | 1999-02-01 | 2000-08-24 | Bosch Gmbh Robert | Safety clutch, especially for handheld tool, having terminating part which surrounds cage, whereby force of spring arrangement is directed radial outwards |
| DE10002748B4 (en) * | 2000-01-22 | 2006-05-18 | Robert Bosch Gmbh | Hand tool with a safety clutch |
| DE10047312A1 (en) * | 2000-09-25 | 2002-05-08 | Hilti Ag | Controllable planetary gear |
| DE10058994B4 (en) * | 2000-11-28 | 2005-04-21 | Robert Bosch Gmbh | Chisel and hammer |
| DE10130520B4 (en) * | 2001-06-25 | 2008-10-30 | Robert Bosch Gmbh | Hand tool with a safety clutch |
| DE10131220C1 (en) * | 2001-06-28 | 2003-03-06 | Metabowerke Gmbh | Electric handtool with overload coupling reducing torque transmitted between drive shaft of electric drive motor and driven stage when tool is blocked |
| DE102004034268B3 (en) * | 2004-07-15 | 2005-12-29 | Wacker Construction Equipment Ag | Rotary hammer with safety coupling |
| DE102004042952A1 (en) | 2004-09-06 | 2006-03-23 | Hilti Ag | Screwdriver with axially acting impact mechanism |
| EP1702723B1 (en) | 2005-03-18 | 2014-04-02 | Black & Decker, Inc. | Power tool torque overload clutch |
| DE102006009922A1 (en) * | 2006-03-03 | 2007-09-06 | Robert Bosch Gmbh | Switchable coupling for an electric hand tool |
| DE102006057283A1 (en) * | 2006-12-05 | 2008-06-12 | Robert Bosch Gmbh | hand tool |
| DE102007010182A1 (en) * | 2007-03-02 | 2008-09-04 | Robert Bosch Gmbh | Gearing arrangement for a hammer drill and/or chisel hammer comprises a spring element arranged on a driven unit in front of a toothed wheel unit and a locking element along a power flow direction of the driven unit |
| DE102008002594A1 (en) | 2008-06-24 | 2009-12-31 | Robert Bosch Gmbh | Method for operating a machine tool with a coupling device |
| DE102008002591A1 (en) * | 2008-06-24 | 2009-12-31 | Robert Bosch Gmbh | Coupling device for a machine tool and machine tool |
| DE102008040031A1 (en) * | 2008-06-30 | 2009-12-31 | Robert Bosch Gmbh | Multi-speed transmission device and machine tool |
| US8540580B2 (en) * | 2009-08-12 | 2013-09-24 | Black & Decker Inc. | Tool bit or tool holder for power tool |
| EP3535095B1 (en) | 2016-11-04 | 2023-12-06 | Milwaukee Electric Tool Corporation | Clutch mechanism for rotary power tool |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2459092A (en) * | 1945-04-19 | 1949-01-11 | Dana Corp | Slip clutch power take-off unit |
| US2674357A (en) * | 1952-01-31 | 1954-04-06 | Research Corp | Torque overload control |
| DE2936755C3 (en) * | 1979-09-12 | 1982-04-08 | Jean Walterscheid Gmbh, 5204 Lohmar | Overload clutch |
-
1988
- 1988-09-22 DE DE19883832202 patent/DE3832202C1/en not_active Expired - Lifetime
-
1989
- 1989-08-17 CH CH300189A patent/CH680746A5/de not_active IP Right Cessation
- 1989-09-20 JP JP1242440A patent/JPH02116405A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010137356A (en) * | 2002-09-13 | 2010-06-24 | Black & Decker Inc | Rotary tool |
| JP2009504419A (en) * | 2005-08-08 | 2009-02-05 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Electric tool machine and overload prevention device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3832202C1 (en) | 1990-03-22 |
| CH680746A5 (en) | 1992-10-30 |
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