EP0700595B1 - Elektrische handwerkzeugmaschine mit potentiometer und verfahren zum einstellen des potentiometers - Google Patents
Elektrische handwerkzeugmaschine mit potentiometer und verfahren zum einstellen des potentiometers Download PDFInfo
- Publication number
- EP0700595B1 EP0700595B1 EP95913860A EP95913860A EP0700595B1 EP 0700595 B1 EP0700595 B1 EP 0700595B1 EP 95913860 A EP95913860 A EP 95913860A EP 95913860 A EP95913860 A EP 95913860A EP 0700595 B1 EP0700595 B1 EP 0700595B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- potentiometer
- slider
- hand
- power 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.)
- Expired - Lifetime
Links
Images
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/14—Adjustable resistors adjustable by auxiliary driving means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
- H01H9/061—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner enclosing a continuously variable impedance
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H2011/0075—Apparatus or processes specially adapted for the manufacture of electric switches calibrating mechanical switching properties, e.g. "snap or switch moment", by mechanically deforming a part of the switch, e.g. elongating a blade spring by puncturing it with a laser
Definitions
- the invention relates to a hand tool according to the Genus of claim 1 or of a method according to Genus of claim 11.
- a hand tool according to the Genus of claim 1 or of a method according to Genus of claim 11.
- One by hand adjustable potentiometer by means of an actuator have (see. EP-A-0 489 342). Due to inevitable manufacturing and Assembly tolerances must be followed in such hand tools installation of the potentiometer in the housing Resistance adjustment can be carried out in which certain position of the actuator on the potentiometer a desired tap resistance is set. This adjustment process is usually carried out using a additional balancing resistance.
- a trimming resistor for example an adjustable rotary potentiometer or a serve additional resistance that can be burned off by laser beams. The Use trimming resistors for trimming however causes additional effort, particularly in the Large-scale production leads to undesirable additional costs.
- the hand tool according to the invention or the inventive method with the characterizing features of Claim 1 and claim 11, on the other hand, have the advantage that additional trimming resistors for trimming the Potentiometers are not required, making the Manufacturing costs for the handheld machine tool can be reduced is.
- FIG. 1 shows a view of a hand drill as Example of a potentiometer Hand machine tool
- Figure 2 shows a longitudinal section through a Potentiometer according to a first exemplary embodiment
- FIG. 3 a plan view of a resistance path of the potentiometer
- Figure 4 shows a partial section through an actuator of the first Embodiment
- Figure 5 is a perspective view a second embodiment
- Figure 6 is a partial section by the actuator of a third embodiment
- figure 7 shows a section through a potentiometer according to a fourth Embodiment
- Figure 8 is a partial view of the Actuator according to FIG. 7.
- FIG 1 is an example of an electrically operated Handheld power tool 10 shown a in a known manner, a housing 11 arranged therein Electric motor and one rotating by means of the electric motor drivable tool holder 12 for receiving a drilling or Impact drilling tool 13.
- the drive power of the Electric motor is by means of a pressure trigger trained control device 14 controllable.
- the Control device 14 has an actuator 15, which partially protrudes from the housing 2.
- the actuator 15 is part of a Potentiometer 20, which is shown in more detail in Figure 2.
- the potentiometer 20 has a known electrical Resistance track 21, which is on a with respect to the housing 11th Resistive resistance carrier 11a is applied. With the Resistor track 21 is a grinder 22 in electrical conductive pressure contact. The grinder 22 forms one opposite the housing 11 slidable part of the potentiometer 20 and for this purpose connected to the actuator 15 so as to be fixed against displacement.
- the grinder 22 is on his spring end 23 in contact with the resistance track 21 formed like a fork and forms two grinding fingers 22a and 22b, which are made electrically conductive.
- the Resistance path 21 runs between end points 24 and 25 loop-like and has two parallel, in Movement direction of the actuator 15 extending Path sections 21a and 21b.
- the track section 21a stands there via the grinding finger 22a and the grinding finger 22b of the Grinder 22 in electrically conductive contact with the Track section 21b of the resistance track 21.
- the effective here electrical resistance is less than that Corresponding resistance on the resistance track 21, so that the Grinder 22 therefore bridges the resistance track 21.
- Such displacement potentiometers are known per se. Since the Resistance track 21 always has certain deviations due to production in their electrical resistance between the end points 24 and 25 and also the relative position of the grinder 22 to Resistance track 21 varies depending on tolerance, is according to Assembly of the potentiometer 20 and the actuator 15 in the housing 11 of the hand drill 10, a resistance comparison with a Perform adjustment device so that the potentiometer 20 in a certain position, e.g. B. a basic position, a has the desired tap resistance.
- a certain position e.g. B. a basic position
- the first exemplary embodiment according to FIG. 2 is in the actuator 15 in the direction of displacement Grinding 22 extending fastening recess 27 is provided, in which the grinder 22 can be anchored at its end 28.
- a fastening tongue 29 is in the area of the end 28 provided by the elongated part of the grinder 22nd protrudes at an angle and with an edge 29a on a locking surface 30 the mounting recess 27 is under tension.
- the locking surface 30 of the Fastening recess 27 is relatively rough or exists They are made of relatively soft plastic and can also be used Positive locking by hooking or digging in the edge 29a in the Set catch area 30. Instead of a separate one Fastening tongue 29 or in addition to this can also do that End 28 of the grinder 22 to be bent into a tab 33, such as is shown in Figure 3.
- the tab 33 is also below Preload with an edge 33a on the locking surface 30 and prevents the slide 22 from being moved unintentionally compared to the actuator 15 in an analogous manner.
- FIG. 5 shows a second embodiment of the slidable Part of the potentiometer 20. Compared to the previous one Embodiment same or equivalent parts are in this and in the following third embodiment same reference numerals.
- Between grinder 22 and Actuator 15 are also means 26 for adjusting the Relative position trained.
- the actuator 15 is the Fastening recess 27 arranged in the form of a T-groove, which is provided for receiving the end 28 of the grinder 22.
- the T-slot has an opening 44 along its longitudinal direction through which the grinder 22 used is accessible from the outside.
- the , Grinder 22 has a U-shape near its end 28 highly arched bending point 40, at the center of the largest Elevation of a hole 41 is arranged.
- the tongues 42 are roughened at their edges 43 or carry teeth what serves to anchor in the locking surface 30 of the actuator 15.
- the locking surface 30 can also consist of plastic.
- the end 28 is first inserted up to the tongues 42.
- a shifting device for example one rod-shaped tool, at hole 41 is the U-shaped area of the Grinder 22 compressible against its bias, so that the end 28 then further into the mounting recess 27th can be inserted.
- the protruding into the mounting recess 27 Part of the grinder 22 is supported on the support surface 31 from.
- the teeth 43 of the Tongues 42 against the latching surface 30 of the fastening recess 27 be pressed and thus under normal load for one Ensure that the grinder 22 of the potentiometer 20 is anchored.
- the relative position of the grinder 22 to the actuator 15 is at any time after the bending point 40 has been compressed possible in both shift directions.
- FIG. 6 shows a third embodiment of the invention Means 26.
- the grinder 22 points at its in the Fastening recess 27 projecting end 28 on one side Toothing 46 and is on its toothing 46 opposite side surface 47 formed flat.
- the level Side surface 47 is against the by means of a pivot pin 48 Support surface 31 of the mounting recess 27 pressed.
- the Pivot pin 48 is stiff by a perpendicular to Direction of displacement of the actuator 15 lying axis of rotation rotatable and engages with its outer surface 49 in the toothing 46 a.
- the grinder can be turned by turning the pivot pin 48 22 more or less deep in the fastening recess 27 indent.
- the Pivot pin 48 is made of relatively soft plastic, for example made so that the teeth 46 in its outer surface 49 digs in. Due to the difficult bearing of the pivot pin 48 in the actuator 15, the grinder 22 is opposite Actuator 15 non-displaceable at normal actuating forces positioned. By turning the pivot pin 48, the Relative position of actuator 15 and grinder 22 at any time be changed as required.
- the potentiometer from the previous embodiments is as a rotary potentiometer 20 trained.
- the rotary potentiometer 20 has one Potentiometer housing 11a, which is opposite the housing 11 of the Hand machine tool is set.
- Central in Potentiometer housing 11a has a hub 59 which is rotatably mounted forms the adjustable part of the rotary potentiometer 20.
- hub 59 and potentiometer housing 11a are analogous to the Embodiments of grinder 22 described above and resistance tracks 21 arranged, in which shown fourth embodiment of the grinder 22 on the hub 59 is attached.
- a gear 61 is arranged to form a common axis of rotation 60, which is rotatably mounted on a bearing pin 62 fixed to the housing.
- the gear 61 has a central through hole 63, in the on one side of the journal 62 to about the middle of the Through bore 63 protrudes and that with a central bore 64 the hub 59 is aligned.
- the gear 61 stands with a toothing 64 of the actuator 15 engaged ( Figure 8) so that a longitudinal displacement of the Actuator 15 transmitted in a rotational movement of the gear 61 becomes.
- This rotary movement is via a fixing pin 65 on the Hub 59 transferable.
- the fixing pin 65 is in this Through hole 63 of the gear 61 and the central hole 64 of the hub 59 can be pressed. Before that, however, is the relative position from hub 59 to gear 61 shown in FIG preassembled position of the fixing pin 65 according to the invention adjustable.
- the rotary potentiometer 20 can also be a with the gear 61 form a common unit with a separate housing, which in the Housing 11 of the hand drill is used. same for also for the first three embodiments.
- Resistance track 21, grinder 22 and actuator 15 can also be a Form unit and arranged in a common housing be from which the pressure trigger protrudes and into the housing 11 of the hand drill is used. The adjustment can then already take place outside the housing 11.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Adjustable Resistors (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
Claims (11)
- Elektrisch betriebene Handwerkzeugmaschine mit einem Potentiometer (20), das in einem Gehäuse (11) der Handwerkzeugmaschine angeordnet ist und das eine ortsfest im Gehäuse (11) festgelegte elektrische Widerstandsbahn (21) und einen mit der Widerstandsbahn (21) in elektrisch leitendem Druckkontakt stehenden Schleifer (22) aufweist, der mit einem relativ zum Gehäuse (11) verschiebbaren Stellglied (15) eine Verschiebeeinheit bildet, wobei die Handwerkzeugmaschine mit einer Abgleicheinrichtung zum Einstellen eines gewünschten Abgriffwiderstandes am Potentiometer (20) in einer bestimmten Stellposition des Stellgliedes (15) versehen ist, dadurch gekennzeichnet, daß die Abgleicheinrichtung Mittel (26) zum Einstellen der Relativposition von Schleifer (22) und Stellglied (15) zueinander nach deren Einsetzen in das Gehäuse (11) aufweist.
- Handwerkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Mittel (26) zum Einstellen der Relativposition von Schleifer (22) und Stellglied (15) zueinander eine im Stellglied (15) in Verschieberichtung von Stellglied (15) und Schleifer (22) verlaufende Befestigungsausnebmung (27) aufweisen, in der ein Ende (28) des Schleifers (22) verankerbar ist.
- Handwerkzeugmaschine nach Anspruch 2, dadurch gekennzeichnet, daß das in die Befestigungsausnehmung (27) ragende Ende (28) des Schleifers (22) eine unter Vorspannung an einer Rastfläche (30) der Befestigungsausnehmung (27) anliegende Kante (29a; 33a) einer Befestigungszunge (29) bzw. einer Lasche (33) aufweist.
- Handwerkzeugmaschine nach Anspruch 2, dadurch gekennzeichnet, daß der Schleifer (22) im Bereich des in die Befestigungsausnehmung (27) ragenden Endes (28) eine U-förmig hochgewölbte Biegestelle (40) aufweist, die seitlich frei abstehende, hochgestellte Zungen (42) aufweist, die aufgerauhte oder gezackte Ränder (43) haben, welche in die korrespondierende Rastfläche (30) der Befestigungsausnehmung (27) eingreifen.
- Handwerkzeugmaschine nach Anspruch 4, dadurch gekennzeichnet, daß die Befestigungsausnehmung (27) als T-Nut mit einer Öffnung (44) ausgebildet ist, durch welche die Biegestelle (40) des Schleifers (22) zusammendrückbar und längsverschiebbar ist.
- Handwerkzeugmaschine nach Anspruch 5, dadurch gekennzeichnet, daß im Schleifer (22) ein Loch (41) zur Aufnahme einer Verschiebevorrichtung ausgebildet ist.
- Handwerkzeugmaschine nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, daß zumindest die Rastfläche (30) der Befestigungsausnehmung (27) des Stellgliedes (15) aus Kunststoff hergestellt ist.
- Handwerkzeugmaschine nach Anspruch 2, dadurch gekennzeichnet, daß das in die Befestigungsausnehmung (27) ragende Ende (28) des Schleifers (22) in berührendem Kontakt mit einem im Stellglied (15) schwergängig drehbar gelagerten Drehbolzen (48) steht.
- Handwerkzeugmaschine nach Anspruch 6, dadurch gekennzeichnet, daß der Drehbolzen (48) zumindest an seiner Mantelfläche aus Kunststoff hergestellt ist und mit seiner Mantelfläche in eine am Schleifer (22) ausgebildete Verzahnung (46) greift.
- Handwerkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, daß das Potentiometer als Drehpotentiometer (20) mit zwischen einem Potentiometergehäuse (11a) und einer demgegenüber verdrehbaren Nabe (59) ausgebildet ist, zwischen denen eine Widerstandbahn (21) mit zugehörigem Schleifer (22) liegt, wobei die Nabe (59) in beliebiger Drehposition mit einem Zahnrad (61) drehfest verbindbar ist, welches in Eingriff mit einer Verzahnung (64) des Stellgliedes (15) ist.
- Verfahren zum Einstellen eines gewünschten Abgriffwiderstandes eines Potentiometers (20) in einer abzugleichenden Stellposition eines Stellgliedes (15) bei elektrisch betriebenen Handwerkzeugmaschinen, wobei das Potentiometer (20) eine in einem Gehäuse (11) der Handwerkzeugmaschine angeordnete Widerstandsbahn (21) und einen demgegenüber verschiebbaren, mit dieser in elektrischem Schleifkontakt stehenden Schleifer (22) aufweist, der mit dem Stellglied (15) eine Verschiebeeinheit bildet, dadurch gekennzeichnet, daß zunächst die Widerstandsbahn (21) und das Stellglied (15) mit Schleifer (22) in das Gehäuse (11) eingesetzt werden, daß das Stellglied (15) in eine vorgegebene Stellposition gebracht wird, daß anschließend die Relativposition von Schleifer (22) und Stellglied (15) zueinander so lange verändert wird, bis der Schleifer (22 gewünschten Widerstand am Potentiometer (20) abgreift, und daß abschließend der Schleifer (22) und das Stellglied (15) in dieser Relativposition verschiebefest miteinander verbunden werden.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4410312 | 1994-03-25 | ||
DE4410312A DE4410312C2 (de) | 1994-03-25 | 1994-03-25 | Elektrische Handwerkzeugmaschine mit Potentiometer und Verfahren zum Einstellen des Potentiometers |
PCT/DE1995/000406 WO1995026589A1 (de) | 1994-03-25 | 1995-03-24 | Elektrische handwerkzeugmaschine mit potentiometer und verfahren zum einstellen des potentiometers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0700595A1 EP0700595A1 (de) | 1996-03-13 |
EP0700595B1 true EP0700595B1 (de) | 2001-08-29 |
Family
ID=6513791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95913860A Expired - Lifetime EP0700595B1 (de) | 1994-03-25 | 1995-03-24 | Elektrische handwerkzeugmaschine mit potentiometer und verfahren zum einstellen des potentiometers |
Country Status (7)
Country | Link |
---|---|
US (1) | US5606234A (de) |
EP (1) | EP0700595B1 (de) |
CN (1) | CN1041478C (de) |
CZ (1) | CZ285192B6 (de) |
DE (2) | DE4410312C2 (de) |
ES (1) | ES2165418T3 (de) |
WO (1) | WO1995026589A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4735106B2 (ja) * | 2005-07-29 | 2011-07-27 | パナソニック電工株式会社 | 電動工具 |
JP5356161B2 (ja) * | 2009-09-04 | 2013-12-04 | 株式会社マキタ | 変速用スイッチ |
US9884416B2 (en) | 2011-08-01 | 2018-02-06 | Ingersoll-Rand Company | Devices including power tools with non-binding linear slides and associated methods |
EP2739439B1 (de) | 2011-08-01 | 2016-10-05 | Ingersoll-Rand Company | Batteriepackungsfreigabe mit taktiler rückkopplung für schnurlose elektrische werkzeuge |
EP2688080B1 (de) * | 2012-07-16 | 2019-05-29 | Black & Decker Inc. | Elektronisches Schaltmodul für ein Elektrowerkzeug |
US9242362B2 (en) | 2012-09-07 | 2016-01-26 | Robert Bosch Gmbh | Slide switch for a power tool |
JP6617911B2 (ja) * | 2015-08-04 | 2019-12-11 | パナソニックIpマネジメント株式会社 | 電動工具 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2047758C3 (de) * | 1970-09-29 | 1981-07-16 | J.& J. Marquardt, 7201 Rietheim-Weilheim | Betätigungsvorrichtung, insbesondere für einen elektrischen Schalter, mit einem durch eine Rasteinrichtung feststellbaren Betätigungsorgan |
DE2629722C3 (de) * | 1976-07-02 | 1981-04-23 | Scintilla Ag, Solothurn | Handbetätigbare Einbauschaltvorrichtung für elektrische Maschinen, insbesondere Handbohrmaschinen |
DE3342474A1 (de) * | 1983-11-24 | 1985-06-13 | Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt | Schalter |
US4649245A (en) * | 1985-08-09 | 1987-03-10 | Black & Decker Inc. | Variable speed trigger switch |
DE3882007T2 (de) * | 1987-10-21 | 1994-02-17 | Omron Tateisi Electronics Co | Elektrischer Schalter für Elektrowerkzeug. |
DE3821562C1 (de) * | 1988-06-25 | 1990-02-08 | Telefunken Electronic Gmbh, 7100 Heilbronn, De | |
DE4038786A1 (de) * | 1990-12-05 | 1992-06-11 | Bsg Schalttechnik | Vorrichtung zur steuerung oder regelung von durch akkus versorgter geraete |
DE4038785A1 (de) * | 1990-12-05 | 1992-06-11 | Bsg Schalttechnik | Vorrichtung zur steuerung oder regelung von durch akkus versorgter geraete |
DE4225287A1 (de) * | 1992-07-31 | 1994-02-03 | Marquardt Gmbh | Elektrischer Schalter zur Drehzahlregulierung von Motoren |
-
1994
- 1994-03-25 DE DE4410312A patent/DE4410312C2/de not_active Expired - Fee Related
-
1995
- 1995-03-24 CN CN95190218A patent/CN1041478C/zh not_active Expired - Lifetime
- 1995-03-24 DE DE59509553T patent/DE59509553D1/de not_active Expired - Fee Related
- 1995-03-24 WO PCT/DE1995/000406 patent/WO1995026589A1/de active IP Right Grant
- 1995-03-24 ES ES95913860T patent/ES2165418T3/es not_active Expired - Lifetime
- 1995-03-24 CZ CZ952911A patent/CZ285192B6/cs unknown
- 1995-03-24 EP EP95913860A patent/EP0700595B1/de not_active Expired - Lifetime
- 1995-03-24 US US08/545,628 patent/US5606234A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1126003A (zh) | 1996-07-03 |
DE4410312A1 (de) | 1995-09-28 |
DE59509553D1 (de) | 2001-10-04 |
EP0700595A1 (de) | 1996-03-13 |
WO1995026589A1 (de) | 1995-10-05 |
CZ285192B6 (cs) | 1999-06-16 |
CN1041478C (zh) | 1998-12-30 |
DE4410312C2 (de) | 2000-01-13 |
CZ291195A3 (en) | 1996-02-14 |
US5606234A (en) | 1997-02-25 |
ES2165418T3 (es) | 2002-03-16 |
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