EP1127644A2 - Outil électrique à main - Google Patents

Outil électrique à main Download PDF

Info

Publication number: EP1127644A2
Authority: EP; European Patent Office
Prior art keywords: gear; gears; shaft; hand tool; electric hand
Prior art date: 2000-02-23
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.): Granted

Application number

EP01103858A

Other languages

German (de)

English (en)

Other versions

EP1127644A3 (fr

EP1127644B1 (fr

Inventor

Karl-Eugen Dipl.-Ing.(Fh) Deibler

Gerhard Dipl.-Ing.(Fh) Maurer

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Metabowerke GmbH and Co

Original Assignee

Metabowerke GmbH and Co

Priority date (The priority date 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 date listed.)

2000-02-23

Filing date

2001-02-16

Publication date

2001-08-29

2001-02-16 Application filed by Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co

2001-08-29 Publication of EP1127644A2 publication Critical patent/EP1127644A2/fr

2002-01-09 Publication of EP1127644A3 publication Critical patent/EP1127644A3/fr

2006-04-26 Application granted granted Critical

2006-04-26 Publication of EP1127644B1 publication Critical patent/EP1127644B1/fr

2021-02-16 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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

Definitions

the invention relates to an electric hand tool with a Gearbox with at least two gear stages, in which each Gear stage a gear on a drive shaft and a corresponding gear meshing with this gear includes an output shaft and in which the gear stages Assigned gears with different outer diameters are, at least one for switching the transmission Gear of a shaft is axially displaceable.
Electric hand tools are, in particular, two-speed rotary hammers, Impact drills, drills or screwdrivers.
Such gears for electric hand tools exist in the Rule from a gear block, d. H. two side by side arranged gears on different number of teeth a wave that are shifted together to make that Change gear ratio. By moving either one or the other gear works with its corresponding gear on the other shaft together, alternatively both gears out of engagement can be moved out.
the invention solves this problem by providing one Gearbox in which on at least one of the shafts Gear with a larger diameter an internal toothing has with the external teeth of a gear a smaller outside diameter of the same shaft corresponds and the gearwheel with the larger one Outside diameter on the gear with the smaller one Outside diameter is axially displaceable. That is, the Gear wheels of the different gear stages of a shaft are not next to each other on the shaft, but are arranged one above the other or one inside the other coaxially. By moving the larger gear either one or the other gear with the respective one Counter gear can be engaged.
Such a transmission is very compact, because the gears are not next to each other, but one above the other are arranged and therefore little space in the axial direction consume. It can also be inexpensive manufacture, has a high stability and allows one high torque transmission with low wear in reliable way.
both on the output shaft and on the Driveshaft the gears with the larger ones Outside diameters on the gears with the smaller ones Outside diameters are arranged axially displaceable. This will further reduce the necessary Installation space of the gearbox reached. In addition, especially if two blocks constructed in this way are provided the way the larger gears have to travel to perform a shift, can be further reduced.
the gearwheel with the smaller outside diameter can do this have a greater axial extent than the gear with the larger diameter. This will make small necessary displacement safe guidance and a ensures the greatest possible stability of the transmission.
the larger gear thus receives a safe guidance through the smaller gear.
the gear or gears press the smaller outer diameter onto the shaft or positively or materially on the shaft to be determined.
Figure 1 shows a gear 10 of an impact drill with an input shaft 12 and an output shaft 14 which are interconnected via the transmission 10.
a gear 16 with a smaller one Outside diameter arranged, the gear 16 is integrally connected to the shaft 12.
a gearwheel 18 arranged with a larger outer diameter, which in its inner bore has an internal toothing 20 which the counter contour to the external toothing 22 of the gear wheel 16 forms so that the gear 18 via its teeth 20 with the gear 16 cooperates and a rotary drive is ensured.
a Gear 24 pressed on with a smaller outer diameter, wherein a gear 26 with a larger outer diameter on the Gear 24 is arranged with a smaller outer diameter and the gear 26 has an internal toothing 28 in it Has central bore with an external toothing 30 of the gear 24 corresponds, so that a rotary drive is ensured.
Figure 1 shows the transmission in second gear, the Larger gear 18 of the drive shaft 12 with the smaller one Gear 24 of the output shaft 14 is in engagement 32 and so the torque from the drive shaft 12 to the Output shaft 14 transmits.
the gear 26 of the Output shaft 14 is here on the gear 24 in the Drawing moved to the right.
the gear 26 there hereby the external toothing 30 of the smaller gear wheel 24 at least partially free, so that the gear 18 Drive shaft 12 with its external toothing 36 with the External teeth 30 of the gear 24 can cooperate.
FIG 3 now shows the transmission 10 also in first gear as Figure 2, in which the outer gear 26 with its External toothing 38 with the external toothing 22 of the gear 16 of the drive shaft 12 cooperates.
the gear 18 with the larger outer diameter of the drive shaft 12 move so far to the left in the drawing plane until it has a striker 40 over a Recess 42 in the gear 18 and a cam 44 of the Impact device interacts.
the hammer drill is then in the so-called hammer position and the drilling process is reinforced. The filming continues to take place.
Figure 4 shows the transmission of Figure 3, in which the Gear 18 in engagement with the striker 40 located.
“chisel position” is the Rotational driving interrupted via the transmission 10, in which the outer gear 26 of the output shaft 14 in the Drawing level has been moved to the right, that it bears against the stop 34.
the external toothing 38 of gear 26 is no longer engaged with the toothing 22 of the gear 16.
the output shaft is here blocked.
FIG. 5 to 8 now show the gear positions according to Figure 1 to Figure 4, with the switchover to be dealt with by means of the actuating element.
the switching process takes place by means of two cams 50 and 52, which act on two levers 54 and 56.
the cam 50 which is on the lever 56, is illustrated acts, and the lever 56 is shown hatched, whereas the lever 54 and the cam 52 are unshaded are shown.
the lever 54 acts on the outside Gear 26 of the output shaft 14.
the lever 56 acts a linkage 58 on the outer gear 18 of the drive shaft 12.
FIG. 6 shows, the distance between the two levers 54 and 56, which are biased against each other via a spring 60, constant.
the movement of the cams 50 and 52 provides one Movement of both levers 56 and 54 in the drawing right, causing both gears 26 and 18 towards move on the striking mechanism 40 and the movement of both Gears 18, 26 are carried out synchronously.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Percussive Tools And Related Accessories (AREA)
Surgical Instruments (AREA)
Gear-Shifting Mechanisms (AREA)
Gear Transmission (AREA)

EP01103858A 2000-02-23 2001-02-16 Outil électrique à main Expired - Lifetime EP1127644B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE10008315		2000-02-23
DE10008315A DE10008315A1 (de)	2000-02-23	2000-02-23	Elektrohandwerkzeug

Publications (3)

Publication Number	Publication Date
EP1127644A2 true EP1127644A2 (fr)	2001-08-29
EP1127644A3 EP1127644A3 (fr)	2002-01-09
EP1127644B1 EP1127644B1 (fr)	2006-04-26

Family

ID=7632017

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP01103858A Expired - Lifetime EP1127644B1 (fr)	2000-02-23	2001-02-16	Outil électrique à main

Country Status (3)

Country	Link
EP (1)	EP1127644B1 (fr)
AT (1)	ATE324213T1 (fr)
DE (2)	DE10008315A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102006061600A1 (de)	2006-12-27	2008-07-03	Metabowerke Gmbh	Elektrohandwerkzeuggerät
CN102470521A (zh) *	2009-07-03	2012-05-23	罗伯特·博世有限公司	手持式工具机
CN103538037A (zh) *	2012-07-16	2014-01-29	罗伯特·博世有限公司	手持式工具机装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5915765B2 (ja) *	1981-10-05	1984-04-11	松下電工株式会社	回転式電動工具の変速装置
DE3934283A1 (de) *	1988-10-14	1990-05-03	Hitachi Koki Kk	Schaltgetriebe fuer eine elektrisch angetriebene werkzeugmaschine
DE19848073B4 (de) *	1997-10-22	2005-06-23	Makita Corp., Anjo	Drehzahländerungseinrichtung für eine Werkzeugmaschine und Werkzeugmaschine mit einer solchen Drehzahländerungseinrichtung
DE19849073A1 (de) *	1998-10-24	2000-04-27	Aventis Pharma Gmbh	Transgener C. elegans als Modellorganismus für Untersuchungen zur Alzheimer'schen Krankheit

2000
- 2000-02-23 DE DE10008315A patent/DE10008315A1/de not_active Ceased
2001
- 2001-02-16 DE DE50109580T patent/DE50109580D1/de not_active Expired - Lifetime
- 2001-02-16 AT AT01103858T patent/ATE324213T1/de not_active IP Right Cessation
- 2001-02-16 EP EP01103858A patent/EP1127644B1/fr not_active Expired - Lifetime

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102006061600A1 (de)	2006-12-27	2008-07-03	Metabowerke Gmbh	Elektrohandwerkzeuggerät
CN102470521A (zh) *	2009-07-03	2012-05-23	罗伯特·博世有限公司	手持式工具机
CN102470521B (zh) *	2009-07-03	2015-12-16	罗伯特·博世有限公司	手持式工具机
US9415497B2 (en)	2009-07-03	2016-08-16	Robert Bosch Gmbh	Hand-held power tool
CN103538037A (zh) *	2012-07-16	2014-01-29	罗伯特·博世有限公司	手持式工具机装置
CN103538037B (zh) *	2012-07-16	2019-06-11	罗伯特·博世有限公司	手持式工具机装置

Also Published As

Publication number	Publication date
EP1127644A3 (fr)	2002-01-09
DE10008315A1 (de)	2001-09-06
DE50109580D1 (de)	2006-06-01
ATE324213T1 (de)	2006-05-15
EP1127644B1 (fr)	2006-04-26

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