EP1409206A1 - Bohr- und/oder schlaghammer mit handgriff - Google Patents
Bohr- und/oder schlaghammer mit handgriffInfo
- Publication number
- EP1409206A1 EP1409206A1 EP02758385A EP02758385A EP1409206A1 EP 1409206 A1 EP1409206 A1 EP 1409206A1 EP 02758385 A EP02758385 A EP 02758385A EP 02758385 A EP02758385 A EP 02758385A EP 1409206 A1 EP1409206 A1 EP 1409206A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hammer
- axis
- motor
- striking
- percussion
- 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.)
- Granted
Links
Classifications
-
- 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
Definitions
- the invention relates to a hand-held drilling and / or percussion hammer according to the preamble of claim 1. 5
- Drilling and / or impact hammers hereinafter referred to as hammers for short, are produced in accordance with a variety of design concepts, depending on the intended use. Hammers with small electric power consumption and light weight are generally used with a manual IC) reached in "pistol-shaped" is executed. However, with higher demands on the performance of such a hammer, a correspondingly increased diameter of an electric motor used in the hammer, generally a common universal motor, will result in a disadvantageous large distance between a hammer axis and the handle.
- the invention has for its object to provide a hand-held drilling and / or percussion hammer, which has compact outer dimensions.
- An inventive hand-held drill and / or percussion hammer hereinafter referred to as a hammer, has an electric motor, a drivable by the electric motor percussion, a the electric motor and the percussion receiving housing and a handle which is formed on the housing, that a Gripping position is located in an extension of a striking axis of the striking mechanism.
- the axis of rotation of the motor shaft of the electric motor with the impact axis is parallel to the axis.
- the arrangement of the handle at the height of the impact axis allows operation of the hammer without disturbing pitching vibrations, while the alignment of the motor shaft has a significant reduction in manufacturing costs result, because the number of required components can be significantly reduced.
- the structure according to the invention is particularly suitable for hammers middle performance class or above.
- the electric motor may be formed from a three-phase motor, wherein further in the housing, a converter for supplying power to the three-phase motor is provided with a suitable power frequency.
- the three-phase motor makes it possible to significantly reduce the overall length of the hammer in its longitudinal direction, since a three-phase motor is shorter not only because of the omission of a collector, but also because this motor type can be shorter by the length of one or both motor bearings. Since these can be installed in contrast to the universal motor by the absence of a projecting beyond the end faces of the rotor core stack winding on the rotor in the winding of the stator.
- a wobble shaft device can be provided in the housing, which converts a rotational movement of the three-phase motor into a reciprocating motion for the striking mechanism, the three-phase motor - in relation to the striking axis in horizontal position - above the wobble shaft device and behind the impact mechanism - ie between Percussion and handle - can be arranged.
- a wobble shaft device is provided in the housing, which converts a rotational movement of the three-phase motor into a reciprocating motion for the impact mechanism, wherein the three-phase motor below the bogie and below the wobble shaft device, in each case based on the striking axis in horizontal position, can be arranged.
- the resulting overall length of this embodiment is extremely short, resulting in excellent handling of the hammer.
- the handle formed on the housing is a spade handle, wherein the three-phase motor can be arranged in a region of the housing below the spade handle.
- the converter can be U-shaped for reasons of space and can be arranged above the percussion unit and above the tumble-wave device, relative to the striking axis in a horizontal position.
- This possible embodiment of the converter has the advantage that unnecessary voids in the housing can be filled in accordance with the converter, which is reflected in the compact outer dimensions of the hammer. Furthermore, the resulting in the converter heat loss can be efficiently dissipated through the housing to the outside.
- a spade handle is formed on the housing.
- the hammer mechanism is designed as a hollow piston impaction, with hollow drive piston and movable therein percussion piston, wherein the wobble shaft device serves as a drive for the hollow plunger impaction.
- the particular advantage of the described hammer is that on the one hand the total number of mechanical parts can be reduced and on the other hand the cost of these mechanical parts can be considerably reduced. With comparable functions as with conventional hammers of this performance class, not only cost advantages, but also weight advantages can be achieved. Consequently, the hammer according to the invention is extremely advantageous in terms of manufacturing costs, safety, ease of use and durability.
- the electric motor is a universal motor.
- a spade handle may be formed on the housing, further wherein the universal motor in a lower housing bar, d. H. in a region of the housing below the spade handle, can be arranged.
- This arrangement advantageously leads to a small total length of the hammer in its longitudinal direction, despite the inherently longer design of the universal motor in relation to the three-phase motor.
- FIG. 1 shows a basic structure of a first embodiment of the hammer according to the invention in a lateral Thomasan- sees
- Fig. 2 shows a basic structure of a second embodiment of the hammer according to the invention
- FIG. 3 shows a basic structure of a third embodiment of the hammer according to the invention.
- FIG. 4 shows a basic structure of a fourth embodiment of the hammer according to the invention.
- FIGS. 1 to 4 each show a basic structure of a first to fourth embodiment of a boring and / or percussion hammer 1 according to the invention, hereinafter referred to as a hammer, in a lateral sectional view.
- the first to fourth embodiments shown in FIGS. 1 to 4 have in common that a housing 2 is provided, in which at one end a tool holder 3 is mounted with a chuck 4, in which a tool (not shown) can be clamped , A shank 3a of the tool holder 3 leads into the housing 2 and is mounted in the housing 2 about a first axis 6 by means of a first bearing device 5. From the illustrations in FIGS. 1 to 4 it can be seen that the first axis 6 is parallel to a horizontal main working direction of the hammer 1, which results from the orientation of the tool holder 3 and corresponds to the longitudinal or striking axis of a tool.
- a handle 7 is attached to the housing 2 at the level of the first bearing device 5.
- the handle 7 extends in its longitudinal direction substantially perpendicular to the main working direction of the hammer, whereby, when an operator grips the handle 7 with one hand, a reliable support of the torque by the operator is possible.
- a jug or spade handle 8 is formed, which the operator can embrace with her main hand.
- the spade handle 8 is in two places, i. hinged at the top and bottom of the housing 2. As can be seen in the figures, it is ensured by the provision of the spade handle 8 that the gripping position, that is to say the main hand of the operator, is always substantially at height or in height
- an operating switch 8a is provided in an upper region of the spade handle 8, by the operation of which the operator can put the hammer 1 into operation or out of operation.
- the operating switch 8a is also arranged approximately in extension of the striking axis in order to obtain the desired gripping position.
- FIGS. 1 to 4 have in common that an anvil 3b is arranged within the shaft 3a of the tool holder 3 leading into the housing 2.
- the striker 3b is movable in the shaft 3a in a direction parallel to the axis 6 or to the main working direction.
- a percussion mechanism 9 is provided, which is designed as a hollow piston percussion.
- the percussion mechanism 9 in this case has a percussion piston 10, a percussion piston 10 driving in a known manner drive piston 11 and a percussion tube 12 in which the unit consisting of the percussion piston 10 and the drive piston 11 is movably guided parallel to the axis 6.
- a longitudinal axis of the percussion mechanism 9 is coaxial with the first axis 6.
- a flange 13 is provided with a guide eye 14 at the end of the drive piston 11, wherein at an area of the percussion tube 12 which extends over the flange 13, an external toothing 15 is formed.
- the impact mechanism 9 cooperates with a wobble shaft device 16, which is mounted in the housing 2 via a second bearing device 18 and can be rotationally driven about a second axis 17 parallel to the first axis 6.
- a first pin 19 is provided by a third bearing means 20 on a main body of the wobble shaft means 16 and extends at an angle to the second axis 17.
- a free end of the first pin 19 is rotatably mounted in the guide eye 14 of the flange 13.
- the main body of the wobble shaft device 16 has a second pin 21 with an outer toothing 21a, wherein the second pin 21 extends axially parallel to the percussion mechanism 9 or percussion tube 12 such that the outer toothing 21a of the second pin 21 is connected to the outside toothing 15 of the percussion tube 12 is engaged.
- the above-described wobble shaft device 16 on the one hand enables the hammer mechanism tube 12 of the percussion mechanism 9 to be rotated via the second pin 21, which consequently leads to a rotation of the tool holder 3 for a drilling function of the hammer 1. Furthermore, upon rotation of the wobble shaft device 16 about the second axis 17, the first pin 19 continuously passes from a first working position "A" to a second working position "B” and back again to the first working position "A". By the storage of the free end of the first pin 19 in the guide eye 14 thus the flange 13 and thus the drive piston 11 of the impact mechanism is set in a reciprocating motion parallel to the first axis 6.
- a coupling device (not shown) can be adjusted accordingly, whether a rotational movement of a motor to be explained below in a rotational movement of the hammer tube 12 or in a striking movement of the drive piston 11 and thus of the percussion piston 10 is converted, or if there is a superposition of the rotational movement of the Schlagwer- krohrs 12 with the translational reciprocation of the drive piston 11 and the percussion piston 10 for a simultaneous drilling and impact of the hammer 1 comes.
- a tool (not shown) can be inserted into the chuck 4 of the tool holder 3 in such a way that it is held therein in a form-fitting manner in the radial direction, and thus movable in a horizontal direction parallel to the main working direction.
- the striker 3b is configured such that a first end thereof facing the tool holder 3 adjoins the chuck 4.
- a percussion 9 facing the second end of the striker 3b extends through the shaft 3a so that it can come into contact with an end face of the percussion piston 10.
- a rotational movement of the percussion tube 12 via the shaft 3 a to the tool holder 3 transmits, due to a force applied to the hammer 1 contact pressure to a working surface in the chuck 4 recorded end of the tool at the first end abutting the striker 3b, which in turn with its second end abuts the end face of the percussion piston 10.
- the rotation of the tool holder 3 is transmitted to the in a radial direction positively inserted into the chuck 4 tool so that a drilling function of the hammer 1 can perform.
- FIG. 1 shows a first embodiment of the hammer 1, in which a three-phase motor 23 is accommodated via a fourth bearing device 24 in the housing 2 above the wobble shaft device 16 and behind the impact mechanism 9.
- a three-phase motor is generally characterized by the fact that it has a small dimension in the axial direction due to the omission of the otherwise usual in universal motors collector.
- the axial length of this motor type can also be reduced by the length of the motor bearings, as they can be installed in the region of the winding of the stator in contrast to the universal motor by the absence of a projecting beyond the end faces of the rotor core stack winding on the rotor.
- a decisive feature of this embodiment is that the rotary current motor 23 is accommodated in the housing 2 in such a way that an axis of rotation 25 of a motor shaft .26 of the three-phase motor 23 is axially parallel with the first axis 6 or the main working direction of the hammer 1.
- the overall length LGES of the hammer 1 in its longitudinal direction is smaller in comparison to hammers of this power class if a universal motor were installed in such a way that its motor axis would be parallel to the main working direction.
- shortening in the range of 50 to 70 mm can be assumed.
- a converter 27 is arranged below the three-phase motor 23 in a region of the housing between the wobble shaft device 16 and the spade handle 8, in order to supply the three-phase motor 23 with energy accordingly.
- the converter 27 can be suitably fed with single-phase AC line voltage and transforms the mains current into a suitable for the three-phase motor 23 current.
- the motor shaft 26 of the three-phase motor 23 has, at a free end which is in alignment with a flange toothing 28 formed on the main body of the wobble shaft means 16, an external toothing 29 which is engaged with the flange gear 28. In this way, it is possible to transmit the rotation of the motor shaft 26 of the three-phase motor 23 to the wobble shaft device 16.
- a second embodiment of the invention is shown in a side sectional view.
- This second embodiment is largely identical to the first embodiment, wherein the same reference numerals Chen used for the same components, the explanation will not be repeated at this point.
- the three-phase motor 23 is arranged in a region of the housing 2 below the spade handle 8.
- the converter 27 is arranged behind the striking mechanism 9 and above the dewing device 16, in each case with respect to the main working direction.
- a third embodiment of the hammer 1 of which a basic structure is shown in a side sectional view in FIG. 3, an outer shape of the housing 2 is modified in comparison with the first embodiment and the second embodiment in that the three-phase motor 23 is here below Schlagwerks 9 and below the rope melwellen offered 16, each based on the main working direction, is arranged.
- the converter 27 is formed into a U-shape and disposed above the hammer mechanism 9 and above the wobble shaft means 16, with respect to the main working direction, respectively. Due to the design in the U-shape, it is possible that by the converter 27 spaces in the housing 2 are suitably filled, resulting in compact outer dimensions of the hammer 1.
- this shape of the arrangement of the converter 27 is advantageous because it takes up very little space in the housing 2. Furthermore, the heat loss generated by the U-shape in the converter 27 can be released efficiently via the housing 2 to the outside.
- the remaining components of the third embodiment are substantially identical to those of the first and second embodiments.
- FIG. 4 shows a basic structure of a fourth embodiment, which is essentially identical to the second embodiment explained above.
- a universal motor 30 is accommodated here in the housing 2 instead of a three-phase motor, which has a larger dimension in the axial direction due to a separate motor bearing outside the winding of the stator. Due to the advantageous arrangement of the universal motor in the housing 2, wherein the axis of rotation 25 of the motor shaft 26 of the universal motor 30 is axially parallel to the main working direction, but also can be in the fourth embodiment, a reduced overall length LQES compared to hammering this power class achieve, if in these the Electric motor would be arranged in the manner shown here in the housing.
- the various embodiments of the hammer 1 according to the invention due to the above-described design concept, allow a generous dimensioning of the essential components, such as e.g. the first to fourth bearing means 5, 18, 20, 24, the first and second pins 19, 21 and the external teeth 15, 21a, 29, to. This results in a high load capacity and a favorable long life with a superior impact performance of the hammer.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Drilling And Boring (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10136515A DE10136515C2 (de) | 2001-07-26 | 2001-07-26 | Bohr- und/oder Schlaghammer mit Handgriff |
DE10136515 | 2001-07-26 | ||
PCT/EP2002/008255 WO2003011531A1 (de) | 2001-07-26 | 2002-07-24 | Bohr- und/oder schlaghammer mit handgriff |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1409206A1 true EP1409206A1 (de) | 2004-04-21 |
EP1409206B1 EP1409206B1 (de) | 2005-09-28 |
Family
ID=7693234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02758385A Expired - Lifetime EP1409206B1 (de) | 2001-07-26 | 2002-07-24 | Bohr- und/oder schlaghammer mit handgriff |
Country Status (6)
Country | Link |
---|---|
US (1) | US6843330B2 (de) |
EP (1) | EP1409206B1 (de) |
JP (1) | JP4227517B2 (de) |
DE (2) | DE10136515C2 (de) |
ES (1) | ES2248594T3 (de) |
WO (1) | WO2003011531A1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5041575B2 (ja) * | 2006-03-07 | 2012-10-03 | 日立工機株式会社 | 打撃工具 |
KR100770217B1 (ko) * | 2006-06-12 | 2007-10-26 | 삼성전자주식회사 | 포토레지스트 제거용 조성물 및 이를 이용한 범프 전극의형성 방법 |
DE102008000677A1 (de) * | 2008-03-14 | 2009-09-17 | Robert Bosch Gmbh | Handwerkzeugmaschine für schlagend angetriebene Einsatzwerkzeuge |
DE102008000687A1 (de) * | 2008-03-14 | 2009-09-17 | Robert Bosch Gmbh | Handwerkzeugmaschine für schlagend angetriebene Einsatzwerkzeuge |
US8813868B2 (en) * | 2008-05-09 | 2014-08-26 | Milwaukee Electric Tool Corporation | Auxiliary handle for use with a power tool |
US9776296B2 (en) | 2008-05-09 | 2017-10-03 | Milwaukee Electric Tool Corporation | Power tool dust collector |
JP5479023B2 (ja) * | 2009-10-20 | 2014-04-23 | 株式会社マキタ | 充電式電動工具 |
CN103079770B (zh) * | 2010-08-27 | 2017-02-01 | 博世电动工具(中国)有限公司 | 手持式电动工具 |
DE102010062094A1 (de) * | 2010-11-29 | 2012-05-31 | Robert Bosch Gmbh | Hammerschlagwerk |
US9038745B2 (en) | 2010-12-20 | 2015-05-26 | Brigham Young University | Hand power tool and drive train |
EP2718067B1 (de) | 2011-04-11 | 2023-10-11 | Milwaukee Electric Tool Corporation | Tragbare hydraulische auswurflochbohrer |
US9016317B2 (en) | 2012-07-31 | 2015-04-28 | Milwaukee Electric Tool Corporation | Multi-operational valve |
DE102012221748A1 (de) * | 2012-11-28 | 2014-05-28 | Robert Bosch Gmbh | Handwerkzeugmaschine |
JP6325360B2 (ja) * | 2014-06-12 | 2018-05-16 | 株式会社マキタ | 打撃工具 |
US11084006B2 (en) | 2017-03-23 | 2021-08-10 | Milwaukee Electric Tool Corporation | Mud mixer |
JP7362727B2 (ja) | 2018-05-15 | 2023-10-17 | ライトマター インコーポレイテッド | フォトニック処理デバイス及び方法 |
US11398871B2 (en) | 2019-07-29 | 2022-07-26 | Lightmatter, Inc. | Systems and methods for analog computing using a linear photonic processor |
CN111864978B (zh) * | 2020-07-29 | 2022-12-27 | 吉林大学 | 一种孔用耐压柱状直线振动器 |
US11858100B2 (en) | 2021-04-07 | 2024-01-02 | Milwaukee Electric Tool Corporation | Impact power tool |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3161242A (en) * | 1960-05-31 | 1964-12-15 | Skil Corp | Rotary-hammer devices and tool element accessories therefor |
US3203490A (en) * | 1963-06-27 | 1965-08-31 | Black & Decker Mfg Co | Compact rotary hammer |
DE1220361B (de) * | 1965-05-07 | 1966-07-07 | Duss Maschf | Schmiereinreinrichtung an einem Bohrhammer zur Steinbearbeitung |
DE2449191C2 (de) * | 1974-10-16 | 1988-03-24 | Robert Bosch Gmbh, 7000 Stuttgart | Hammer |
DE2506057C3 (de) * | 1975-02-13 | 1979-02-22 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Motorisch angetriebener Bohrhammer |
US4113035A (en) * | 1977-04-21 | 1978-09-12 | Licentia Patent-Verwaltungs-G.M.B.H. | Hammer drill with drive and percussion elements accommodated in a cylinder |
DE3304916A1 (de) * | 1983-02-12 | 1984-08-16 | Robert Bosch Gmbh, 7000 Stuttgart | Bohrhammer |
DE3322965A1 (de) * | 1983-06-25 | 1985-01-03 | Eugen Lutz GmbH u. Co Maschinenfabrik, 7130 Mühlacker | Bohrmaschine |
DE3405922A1 (de) | 1984-02-18 | 1985-08-22 | Robert Bosch Gmbh, 7000 Stuttgart | Handwerkzeugmaschine, insbesondere bohr- oder schlaghammer |
JP3292969B2 (ja) * | 1995-08-18 | 2002-06-17 | 株式会社マキタ | ハンマードリル |
DE19534850A1 (de) * | 1995-09-20 | 1997-03-27 | Hilti Ag | Schlagunterstütztes Handbohrgerät |
DE19728727C1 (de) * | 1997-07-04 | 1999-02-18 | Wacker Werke Kg | Schlag- und/oder Bohrhammer mit Leerlaufkupplung |
DE19851888C1 (de) * | 1998-11-11 | 2000-07-13 | Metabowerke Kg | Bohrhammer |
GB9902793D0 (en) * | 1999-02-09 | 1999-03-31 | Black & Decker Inc | Rotary hammer |
DE10033362A1 (de) * | 2000-07-08 | 2002-01-17 | Hilti Ag | Elektrohandwerkzeug mit Leerschlagabschaltung |
-
2001
- 2001-07-26 DE DE10136515A patent/DE10136515C2/de not_active Expired - Fee Related
-
2002
- 2002-07-24 EP EP02758385A patent/EP1409206B1/de not_active Expired - Lifetime
- 2002-07-24 ES ES02758385T patent/ES2248594T3/es not_active Expired - Lifetime
- 2002-07-24 JP JP2003516749A patent/JP4227517B2/ja not_active Expired - Fee Related
- 2002-07-24 DE DE50204410T patent/DE50204410D1/de not_active Expired - Lifetime
- 2002-07-24 US US10/473,635 patent/US6843330B2/en not_active Expired - Fee Related
- 2002-07-24 WO PCT/EP2002/008255 patent/WO2003011531A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO03011531A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1409206B1 (de) | 2005-09-28 |
DE50204410D1 (de) | 2005-11-03 |
US20040104033A1 (en) | 2004-06-03 |
DE10136515A1 (de) | 2003-02-13 |
US6843330B2 (en) | 2005-01-18 |
JP4227517B2 (ja) | 2009-02-18 |
JP2004535946A (ja) | 2004-12-02 |
WO2003011531A1 (de) | 2003-02-13 |
DE10136515C2 (de) | 2003-10-23 |
ES2248594T3 (es) | 2006-03-16 |
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