公开(公告)号：EP0639304A1

公开(公告)日：1995-02-22

申请号：EP94906880.0

申请日：1994-02-18

申请人： ROBERT BOSCH GMBH

发明人： KIRN, Manfred

IPC分类号： H02K7 ,  H02K23 ,  H02P3

CPC分类号： H02P3/06 ,  H02K7/106 ,  H02K23/24

摘要： The invention relates to an inverse speed motor, especially a universal motor, with a braking device and a stator having a field winding and a rotating armature powered via a commutator and brushes and a suitable circuit for switching the field winding to braking mode and a braking device inducing an additional magnetic field during braking. The inverse speed motor is to be constructed in such a way that, when it is switched from motor to generator or braking mode, the braking process is simply triggered via self-excitation. To this end, to the set of pole shoes (12) of the stator are allocated means for inducing a magnetic field, preferably at least one additional coil (20), and at least one pole arc (16) of at least one pole shoe has a groove (18) or a pair thereof and the additional coil (20) is arranged in the groove (18) or pair or grooves.

公开(公告)号：EP0536162B1

公开(公告)日：1995-02-01

申请号：EP91909956.4

申请日：1991-05-28

申请人： ROBERT BOSCH GMBH

发明人： KIRN, Manfred ,  GRAMMER, Werner ,  KRÄMER, Gerhard ,  EULE, Meinhard

IPC分类号： H02K3/51 ,  H02K3/487

CPC分类号： H02K3/487 ,  H02K3/51

摘要： For an armature (1) for high-speed forced ventilation electric motors running in air containing abrasive dust, especially in electric tools, preferably angle sanders, with windings fitted in grooves (7) of a set of armature plates which are held down in the grooves (7) by longitudinal elastic groove closures (15) and form winding heads (9, 11) at the front ends of the armature, it is proposed that, in order to increase the sturdiness of the armature winding and its resistance to abrasive dust and to improve cooling, the groove closures (15) project beyond the grooves (7), follow the contour of the winding heads (9, 11) especially along generating lines in the longitudinal direction of the armature and extend to the front ends of the armature (1) where their ends are bunched.

公开(公告)号：EP1008229A1

公开(公告)日：2000-06-14

申请号：EP98949917.3

申请日：1998-08-19

申请人： ROBERT BOSCH GMBH

发明人： GÜNTHER, Klaus ,  KIRN, Manfred ,  HORNUNG, Friedrich

IPC分类号： H02K7/102 ,  H02K7/12

CPC分类号： H02K7/1023 ,  F16D49/00 ,  F16D2066/003 ,  H02K7/102 ,  H02K7/12

摘要： The invention relates to an electric motor, especially for a an electric tool, comprising driving means which can be connected to a power supply via switching means and a mechanically operating braking device for restraining the drive shaft when the electric motor is disconnected from the power supply and/or when the cut-out switch is activated. According to the invention, a rotor (armature 14) pertaining to the electric motor and used to provide torque is subjected to a mechanical braking force (F1) when the power supply voltage (48) is turned off.

公开(公告)号：EP0345271B1

公开(公告)日：1992-11-25

申请号：EP88901239.9

申请日：1988-01-12

申请人： ROBERT BOSCH GMBH

发明人： KIRN, Manfred

IPC分类号： B24B45/00 ,  B27B5/32 ,  B23B31/40

CPC分类号： B24B45/006 ,  B27B5/32 ,  F16D1/06 ,  Y10T403/4682 ,  Y10T403/4688

摘要： Clamping device for portable grinding machines, forming part of the clamp nut (17) which can be screwed onto the screw thread (13) at the end of the drive shaft (10) when a mill (15) is to be clamped. The clamp nut (17) bears a non-rotatable and axially-mobile clamp disc (21), which is supported axially by the clamp nut (17) by means of supporting elements (50) arranged in the form of a ring segment. The supporting elements (50) are wedge-shaped in cross-section, the supporting annular surfaces (25, 26) of the clamp disc (21) and clamp nut (17) being correspondingly and similarly arranged in a wedge formation along the flanks of a V-belt pulley. The supporting elements (50) are provided with an outer ball groove (51), along which balls (24) can roll. The clamp disc (21) is provided with axially parallel longitudinal pins (36), serving as stop pins. An annular driving element (28) is disposed axially between the clamp disc (21) and the clamp nut (17), said element provided with an inner ball groove (32) and radial pins (35), which extend across the path of the balls and apply pressure to said balls (24) by means of springs (38). The annular surface (32) of the driving element (28) is provided with recesses (33) for the balls, into which they can pass while the driving element (28) is rotating, providing radial relief to the supporting elements (50) and easing axial tension on the clamp disc (21).

公开(公告)号：EP0853520A1

公开(公告)日：1998-07-22

申请号：EP96932458.0

申请日：1996-10-04

申请人： ROBERT BOSCH GMBH

发明人： KIRN, Manfred ,  KRAENZLER, Ernst ,  KLINGENSTEIN, Klaus ,  DREHER, Ernst ,  HAHN, Gerd ,  MATZO, David ,  ULLRICH, Joerg ,  DEHDE, Joerg ,  GARATWA, Karl ,  SCHADOW, Joachim ,  HERMES, Christian ,  MOESSNER, Joerg

IPC分类号： B23B31

CPC分类号： B23B31/103 ,  Y10S279/906 ,  Y10S279/907 ,  Y10T279/17153 ,  Y10T279/17761 ,  Y10T279/17777 ,  Y10T279/17794 ,  Y10T408/907 ,  Y10T408/95

摘要： The proposal is for a manual machine tool with a tool holder (20) and an appropriate tool (16) with an insertion shank (17) which are designed in such a way that there are, axially separately fitted, guides (18) to guide the tool shank (17) axially, a rotating region (21) and a securing section (24). Great guiding precision with a simple structure and economical production of the tool holder (20) and the tool shank (17) can thus be attained.

公开(公告)号：EP0604477B1

公开(公告)日：1997-09-03

申请号：EP92918670.8

申请日：1992-09-03

申请人： ROBERT BOSCH GMBH

发明人： KIRN, Manfred

IPC分类号： B24B45/00

CPC分类号： B23Q11/0092 ,  B23Q3/16 ,  B24B27/08 ,  B24B45/00 ,  B24B55/00

摘要： Described is a hand-held power tool, in particular an angle grinder (1), fitted with a spindle brake (21), the tool having a spindle (7, 67) on which a disc-shaped attachment (33, 83) is gripped between an inner flange (29, 79) and an outer flange (31, 81). The attachment has a central bore (39, 84) through which the spindle (7, 67) passes, leaving a zone of play round the circumference of the spindle. The outer flange (31, 81) is screwed on a mounting thread (37, 85) in the opposite direction to the direction of rotation of the spindle (7, 67). The tool is designed in such a way that, when the spindle (7, 67) is braked, the gripping pressure on the attachment (33, 83) between the inner and outer flanges (29, 31, 79, 81) increases automatically.

公开(公告)号：EP0424388B1

公开(公告)日：1994-07-06

申请号：EP89903683.4

申请日：1989-04-06

申请人： ROBERT BOSCH GMBH

发明人： SCHÄFER, Dieter ,  KÖBER, Karl-Ernst ,  LASCH, Volker ,  TREYZ, Karl ,  KIRN, Manfred ,  BORST, Erich ,  SCHAAL, Günter ,  METZGER, Kurt

IPC分类号： B24B45/00 ,  B24B23/02

CPC分类号： F16D1/06 ,  B24B45/006 ,  B27B5/32

摘要： A clamping device for portable grinding machines according to the main patent ... (P 37 05 638.7) has an insert (156) shaped as a sheet metal moulded part axially supported on the clamping washer (121) or clamping screw (117) and circumferentially interlocked. The insert (156) carries on segments (159), the slanted support surface (160) for the wedge-shaped support bodies (150), and is hardened at least in these areas. Curved cutouts (163) form stops (131) on the sheet metal moulded part and retain on one side the rolling bodies (124) and on the other side the spring ends (138). In areas located in circumferential gaps between two successive support bodies (150) are formed stops (164) curved out of the sheet metal moulded part which position the support bodies (150) in the circumferential direction. Sheet metal cutouts (165) shaped as hooks as formed therebetween in order to reliably mount the springs (138). The sheet metal moulded part is designed at the same time as a spring element which exerts an axial elastic force between the clamping screw (117) and the clamping washer (121) and prevents the clamping device from being automatically loosened under the influence of vibrations.

公开(公告)号：EP0424388A1

公开(公告)日：1991-05-02

申请号：EP89903683.0

申请日：1989-04-06

申请人： ROBERT BOSCH GmbH

发明人： SCHÄFER, Dieter ,  KÖBER, Karl-Ernst ,  LASCH, Volker ,  TREYZ, Karl ,  KIRN, Manfred ,  BORST, Erich ,  SCHAAL, Günter ,  METZGER, Kurt

IPC分类号： B23C5 ,  B23B31 ,  B24B23 ,  B24B45 ,  B27B5 ,  F16D1

CPC分类号： F16D1/06 ,  B24B45/006 ,  B27B5/32

摘要： Un agencement de serrage pour meuleuses portatives selon le brevet principal ... (P 37 05 638.7) comprend une pièce d'insertion sous forme d'une pièce façonnée en tôle qui s'appuie axialement sur la rondelle (121) ou sur l'écrou (117) de serrage et qui est retenue par liaison de forme dans le sens de sa circonférence. La pièce d'insertion (156) porte sur les segments (159), la surface d'appui inclinée (160) des corps d'appui (150) cunéiformes, et est durcie au moins à ces endroits. Des sections (163) de la pièce façonnée en tôle sont pliées de façon à former des butées (131) sur lesquelles s'appuient d'un côté les corps de rouleaux (124) et de l'autre côté les extrémités de ressorts (138). Des pièces de butée (164) pliées à la verticale dans la pièce façonnée en tôle dans des régions situées dans des espaces circonférentiels entre deux corps d'appui (150) successifs servent à positionner les corps d'appui (150) dans le sens de la circonférence. Des sections (165) de tôle pliées verticalement de façon à former des crochets sont situées entre les butées (164) afin d'assurer un montage fiable des ressorts (138). La pièce façonnée en tôle constitue en outre un élément à ressort qui exerce une force élastique axiale entre l'écrou (117) et la rondelle (121) de serrage et qui empêche le dispositif de serrage de se desserrer automatiquement sous l'effet des vibrations.

公开(公告)号：EP0344154A1

公开(公告)日：1989-12-06

申请号：EP87907746.0

申请日：1987-12-04

申请人： ROBERT BOSCH GMBH

发明人： KIRN, Manfred

IPC分类号： B24B45 ,  F16D1

CPC分类号： B24B45/006

摘要： Le dispositif de fixation est destiné aux machines à meuler portatives. Il comprend un écrou de serrage (17) apte à être vissé sur l'extrémité filetée (13) de la broche d'entraînement (10) pour la fixation d'une meule (15). L'écrou de serrage (17) porte un disque de serrage (21) non rotatif mais mobile axialement. Ces deux pièces présentent des surfaces annulaires (25, 26) qui ferment une cage de roulement de billes (24), celles-ci servant de soutien au disque de serrage (21). L'écrou (17) et le disque de serrage (21) sont accouplés par des goupilles (36) parallèles à l'axe longitudinal et qui servent de butée aux billes. Une bague (29) pourvue d'une rainure (32) pour les billes est disposée coaxialement entre l'écrou (17) et le disque de serrage (21). Des goupilles radiales (35) font saillie dans le chemin de roulement des billes et appuient contre les billes sous l'action de ressorts (39). La surface annulaire (25) du disque de serrage (21) présente des cavités (33) dans lesquelles les billes peuvent pénétrer par rotation de l'organe d'actionnement (28) sous l'effet de la détente axiale du disque de serrage (21).

摘要翻译： 该固定装置适用于便携式磨床。 它包括适于拧到传动销（10）的螺纹端（13）上用于固定砂轮（15）的夹紧螺母（17）。 夹紧螺母（17）带有一个不旋转但可轴向移动的夹紧盘（21）。 这两个部件具有环形表面（25,26），该环形表面封闭用于支撑夹盘（21）的滚珠（24）的滚动笼。 螺母（17）和夹紧盘（21）通过平行于纵向轴线的销（36）连接并用作球的止动件。 设置有用于球的沟槽（32）的环（29）同轴地布置在螺母（17）和夹盘（21）之间。 径向销（35）伸入滚珠的滚道内并在弹簧（39）的作用下压靠滚珠。 夹盘（21）的环形表面（25）具有空腔（33），在夹盘的轴向膨胀的作用下，球体可通过致动构件（28）的旋转而穿过该空腔 21）。

公开(公告)号：EP0906175A1

公开(公告)日：1999-04-07

申请号：EP97942809.0

申请日：1997-09-06

申请人： ROBERT BOSCH GMBH

发明人： KIRN, Manfred ,  BLEICHER, Manfred ,  HAHN, Gerd ,  LAMPRECHT, Justus ,  MATZO, David ,  FAERBER, Herbert ,  HÖLDERLIN, Andreas ,  DEHDE, Jörg ,  BUJALSKI, Leon ,  GAWRON, Alex ,  HOLZER, Michael, Jr.

IPC分类号： B23D47 ,  B24B45 ,  B27B5

CPC分类号： B24B45/006 ,  B27B5/32 ,  Y10T83/9379 ,  Y10T83/9464

摘要： The present invention relates to a manually driven machine (10) provided with a rotatively driven disk-type tool (22), for example a circular saw, a cage (12) accomodating a propulsion engine and a spindle (17) bearing a tool between an attaching nut, a clamping screw (19), or a similar item, and supporting bridles (21, 23), of which the one (23) facing the spindle (17) is easily workable, can rotate without using any tool and takes its bearing against the tool (22) without much friction. The securing and releasing efficiency of the tool results from the fact that adjustment means (35) coupled with the supporting bridle (22) cause the latter to be axially shifted by a torque, including through the tool, in the direction of the latter (22) when they start rotating relative to the tool spindle (17), thereby increasing the clamping force exerted on the tool (23), and tend, when the tool (22) is idle, to cause the supporting bridle (23) to axially shift away from the tool (22), thereby bringing about a release of the clamping force.