EP0156387B1 - Schwingungsdämpfende Griffvorrichtung - Google Patents

Schwingungsdämpfende Griffvorrichtung Download PDF

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Publication number
EP0156387B1
EP0156387B1 EP19850103706 EP85103706A EP0156387B1 EP 0156387 B1 EP0156387 B1 EP 0156387B1 EP 19850103706 EP19850103706 EP 19850103706 EP 85103706 A EP85103706 A EP 85103706A EP 0156387 B1 EP0156387 B1 EP 0156387B1
Authority
EP
European Patent Office
Prior art keywords
vibration
grip
mass body
grip member
proof
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
Application number
EP19850103706
Other languages
English (en)
French (fr)
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EP0156387A3 (en
EP0156387A2 (de
Inventor
Makoto Minamidate
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.)
Yamaguchi Yasuharu
Original Assignee
Yamaguchi Yasuharu
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.)
Filing date
Publication date
Priority claimed from JP6102684A external-priority patent/JPS60207778A/ja
Priority claimed from JP59064136A external-priority patent/JPS60207777A/ja
Application filed by Yamaguchi Yasuharu filed Critical Yamaguchi Yasuharu
Publication of EP0156387A2 publication Critical patent/EP0156387A2/de
Publication of EP0156387A3 publication Critical patent/EP0156387A3/en
Application granted granted Critical
Publication of EP0156387B1 publication Critical patent/EP0156387B1/de
Expired legal-status Critical Current

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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
    • B25F5/02—Construction of casings, bodies or handles
    • B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
    • B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
    • 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
    • B25F5/006—Vibration damping means

Definitions

  • the invention relates to a vibration-proof grip device comprising:
  • the vibration-proof grip device to which the invention relates can be suitably used as a grip for hand-supported vibratory tools or machines such as machine drills, leg drills, pitching hammers and disk grinders.
  • vibration-proof grips have been proposed to solve the problems noted above.
  • Prior art vibration-proof grips mostly utilize vibration-proof rubber or springs which are provided between the tool as the source of vibrations and grip.
  • the aim of such vibration-proof grips is to provide a vibration-proof effect of the grip by making the proper vibration frequency of the grip system to be lower than the vibration frequency of the tool body.
  • a vibration-proof grip device of the type mentioned in the beginning is disclosed in DE-A-3 304 849, the primary object of which is to provide a vibration-isolated handle adapted to a vibrating tool which can damp vibration from the vibrating tool without lowering the hardness of the connection between the vibrating tool and the handle and without increasing the weight of the handle.
  • the handle of DE-A-3 304 849 comprises a connecting member mounted on a vibration source, the connecting member having a longitudinal axis and a predetermined length; an elastic member having the same longitudinal axis and about the same length as the connecting member; a tubular grip extending in the same direction as the elastic member and having a length longer than the elastic member, the tubular grip being mounted in the elastic member at one end thereof; and a mass body attached on the extending free end of the grip.
  • the present invention has been intended to effectively solve the prior art problems noted above and its object is to provide a vibration-proof grip device to be used as a grip for a tool or machine producing undesired strong vibrations, which can provide sufficient vibration-proof effect and also permits a mechanical strength practically equal to that of a rigid support and reduction of size and weight to be realized.
  • a vibration-proof grip device of the type mentioned in the beginning which is characterized in that said second mass body is an impact mass body provided in the grip member such that it can strike the inner walls thereof upon vibration, and a second elastic member being provided between the vibration source and said first mass body.
  • the invention is predicated on a fact that one or more nodes of vibrations occur in a vibration system, having a multiple freedom, in which a plurality of mass bodies are coupled to one another via elastic members such as rubber members, when the system is vibrated.
  • the center of a grip member is located at a position, at which a node of vibrations occurs.
  • an impact mass body is provided in the grip member such that it can strike the grip member that would arise due to variations of the vibration frequency of the vibration source.
  • a vibration-proof grip device of the type mentioned in the beginning which is characterized in that said second mass body being an impact mass body provided in the grip member such that it can strike the inner walls thereof upon vibration, and said first mass body forming a second elastic member between said vibration source and said first elastic member.
  • Reference numeral 1 designates a tubular body which is mounted on a source of vibrations such as a machine drill.
  • a first elastic member 2 as shown in Fig. 2, which is a cylindrical member made of rubber and is secured by baking to the tubular body 1.
  • Pair nuts 3 are coaxially inserted in and secured to opposite end portions of the first elastic member 2.
  • Each nut 3 has a bottom, and its inner periphery is formed with a female thread. Screwed in each of the nuts 3 is a stem portion 4a of a first mass body 4 having a rod-like shape, as shown in Fig. 3.
  • a portion 4a of the first mass body 4 other than its stem portion 4a is buried in a second elastic member 6 made of rubber, which fills a stem portion of a cylindrical grip member 5.
  • the portion 4b of the first mass body 4 has flanges 4c which serve to prevent detachment of the portion 4b from the second elastic member 6.
  • the grip member 5 has a central partition wall 5a and has an open end (8) opposite the second elastic member 6.
  • a second mass body 7 is mounted in the open end of the grip member 5 to close the opening.
  • the grip member 5 has an inner space 8 which is defined between the partition wall 5a and second mass body 7, and a substantially cylindrical impact mass body 9 is provided in the space 8.
  • the radial dimension of the impact mass body 9 is slightly smaller than the inner diameter dimension of the grip member 5, and also its axial dimension is slightly smaller than the axial dimension of the space 8 between the second mass body 7 and the partition wall 5a.
  • the impact mass body 9 is capable of being vibrated in the space 8 and striking the inner wall of the grip member 5 and second mass body 7.
  • Undesired vibrations are transmitted from the source of vibrations such as machine drill to the tubular body 1.
  • the vibrations transmitted to the tubular body 1 is attenuated by the first elastic member 2 to a certain extent before being transmitted to the opposite side first mass bodies 4.
  • the first mass bodies 4 are vibrated substantially at the same phase as the original vibrations.
  • the vibrations of each first mass body 4 are transmitted through the second elastic member 6 to the grip member 5.
  • the second elastic member 6 intervenes between the first mass body 4 and stem portion of the grip member 5 and the second mass body 7 and impact mass body 9 are provided on the other side of the grip member 5 than the stem side and serve to suppress vibrations or displacement by their inertia.
  • the elasticity of the second elastic member 6, the mass of the second mass body 7 and impact mass body 9 and/or the length of the grip member 5 may be suitably selected such that the other side of the grip member 5 than the stem side, the vibrations of which lags behind the vibrations of the first mass body 4, will vibrate at the opposite phase to and at the same frequency as the first mass body 4.
  • the first mass body 4 which is vibrated with the original vibrations constitutes a loop of vibrations, while the end portion of the grip member 5 other than the stem thereof constitutes a node of vibrations.
  • the original vibrations from the source of vibrations thus can be extremely attenuated.
  • the end portion of the grip member 5 is not substantially vibrated.
  • the vibration mode noted above fails to be realized so that the end portion of the grip member 5 is vibrated.
  • the impact mass body 9 provided in the grip member 5 can provide a vibration-proof effect for a considerably wide vibration frequency range.
  • the impact mass body 9 in the space 8 is vibrated at a different phase from the vibration phase of the grip member 5, so that it strikes the walls of the grip member 5 including the partion wall 5a and also the second mass body 7.
  • Such collision of the impact mass body 9 have an effect of suppressing or attenuating the vibrations of the end portion of the grip member 5.
  • the vibrations of the end portion of the grip member 5 can be effectively prevented over a comparatively wide vibration frequency range of the vibration source.
  • the gap or clearance between the outer periphery of the impact mass body 9 and inner periphery of the grip member 5 should be appropriately set, preferably to about 0.5 mm. If the clearance is too small, the impact mass body 9 and grip member 9 would be vibrated in unison with each other, so that a vibration attenuation effect due to the collision of the impact mass body 9 can not be obtained. On the other hand, if the clearance is too large, the frequency of collision of the impact mass body 9 would be too low to suppress the vibrations of the grip member 5.
  • Fig. 4 shows results of measurement of vibratory acceleration transmitted to a prior art grip of a machine drill
  • Fig. 5 shows results of measurement of vibratory acceleration transmitted to the end portion of the grip 5 of this embodiment of the vibration-proof grip device when the device is mounted on the same machine drill.
  • the ordinate is taken for gravitational acceleration
  • the abscissa is taken for time.
  • Fig. 6 shows a second embodiment of the vibration-proof device according to the invention.
  • reference numeral 10 designates a plate-like member which is mounted by bolts on a vibration source such as a leg drill pair tubular bodies 11 are mounted on the opposite bent ends of the plate-like member 10.
  • a cylindrical grip member 13 central portion of which is somewhat expanded is provided between the pair tubular bodies 11 in a coaxial relation thereto.
  • the tubular bodies 11 are each filled with a first elastic member 12 made of rubber.
  • Opposite end portions of the grip member 13 are filled with second elastic members 14 made of rubber.
  • the grip member 13 is supported by first mass bodies 15, each of which bridges the associated first and second elastic members 12 and 14. An inner end portion of each first mass body 15 is buried in and secured to the associated second elastic member 14.
  • each first mass body 15 penetrates the first elastic member 12, and a lock nut 16 is fitted on its outer end projecting from the associated first elastic member 12.
  • a sleeve 19 is provided in the see-through hole of the first elastic member 12 which is penetrated by the first mass body 15.
  • the grip member 13 has a pair of partition walls 13a defining a central inner space.
  • An impact mass body 18 is provided in the central inner space. The radial dimension of the impact mass body 18 is slightly smaller than the inner periphery diameter of the wall of the grip member 13 defining the central inner space so that the impact mass body 18 can strike the inner wall of the grip member 13.
  • Vibrations of a vibration source are transmitted through the plate-like member 10 and each tubular body 11 to each first elastic member 12 to be attenuated therein before being transmitted to each first mass body 15.
  • the first mass body 15 undergoes vibrations substantially at the same phase and at the same frequency as the original vibrations although with a smaller amplitude than the original vibrations.
  • the first mass bodies 15 are vibrated comparatively strongly, but by virtue of the presence of the second elastic member 14 and impact mass body 18, a central portion of the grip member 13 is vibrated at the opposite phase to the vibrations of the first mass bodies 15, that is, it constitutes a node of vibrations. In other words, the central portion of the grip member 13 is not substantially vibrated, and a sufficient vibration-proof effect can be obtained.
  • the second mass bodies 17 in this embodiment are thought to serve as inertial mass to suppress vibrations transmitted from the end portion of the first mass bodies 15 through the second elastic members 14 to the ends of the grip member 13.
  • the vibration suppression effect of the collision of the impact mass body 18 is the same as in the preceding first embodiment.
  • Fig. 7 shows results of measurement of vibratory acceleration transmitted to a prior art grip mounted on a leg drill
  • Fig. 8 shows results of measurement of vibratory acceleration transmitted to the central portion of the grip member 13 of this embodiment of the vibration-proof grip device which is mounted on the same leg drill. Again with this embodiment very satisfactory vibration-proof effects are recognized.
  • Fig. 9 shows a third embodiment of the vibration-proof grip device according to the invention.
  • reference numeral 20 designates a cylindrical member with a bottom, which is mounted on a vibration source such as a pitching hammer.
  • the cylindrical member 20 also serves as a compressed air source section for supplying working compressed air to the vibratory tool body. Compressed air is supplied to the cylindrical member.20 through a tube 21 mounted on a side wall of the member 20.
  • the tube 21 is curved and serves as a grip support.
  • a cylindrical grip member 23 is mounted on an end portion of the tube 21 via an elastic member 22 made of rubber.
  • An impact mass body 24 is provided in an end portion of the grip member 23 such that it can strike the grip member 23.
  • the grip member 23 is provided at the end with a connector 25, to which an air supply hose can be connected.
  • An on-off valve 26 is provided on a portion of the tube 21 extending between the cylindrical member 20 and grip member 23, and it can open and close a compressed air passage.
  • the on-off valve 26 includes a valve member 27 having a see-through hole, a spring 29 urging the valve member 27 against a valve casing 28 and a lever 30 for operating the valve member 27.
  • the impact mass body 24 has a see-through hole serving as a compressed air passage.
  • the curved tube 21 has flexibility so that it can serve the roles of both the first mass body and the first elastic member. Vibrations of the source of vibrations are transmitted through the cylindrical member 20 to the tube 21. Owing to the presence of the elastic member 22 and impact mass body 24, however, a node of vibrations is formed at the end portion of the grip member 23 to provide for the vibration-proof effect. The collision of the impact mass body 24 also provides a vibration suppression effect.
  • Fig. 10 shows results of measurement of vibratory acceleration transmitted to a prior art grip mounted on a pitching hammer
  • Fig. 11 shows results of measurement of vibratory ' acceleration transmitted to the end of the grip member 23 of this embodiment of the vibration-proof grip device which is mounted on the same pitching hammer. Again with this embodiment, excellent vibration-proof effects could be recognized.
  • the impact mass bodies 9, 18 and 24 have each been a one-piece body, but it is possible to replace the one-piece body with a plurality of washers or steel balls.
  • Fig. 12 shows a modification of the first embodiment, which employs a plurality of washers 31 in lieu of the impact mass body 9.
  • the individual washers 31 will randomly collide with one another, so that it is possible to improve the vibration-proof effect.
  • Fig. 13 shows a further embodiment of the vibration-proof grip device according to the invention.
  • reference numeral 41 designates a vibration source which produces undesired vibrations, e.g., a pitching hammer, a disk grinder, a hammer drill and other vibratory tools.
  • a plate-like support 42 on which the embodiment of the vibration-proof grip device is mounted, is secured by bolts to the vibration source 41.
  • the plate-like support 42 has a pair of cylindrical casings 43 which are provided symmetrically at its opposite ends. Shafts 44 coaxially penetrate the respective casing 43. A portion of each shaft 44 that extends in the associated casing 43 has a flange 44a.
  • Two first elastic members 45 made of rubber fill the space between the outer periphery of the shaft 44 and inner periphery of the casing 43 such that the flange 44a is found between and supported by these elastic members 45.
  • the first elastic members 45 permit vibrations of the shaft 44 in the axial direction of the casing 43. Rings 46 are provided to prevent wear of the shaft 44 and shaft holes of the casing 43 due to contact of the two when the shaft 44 is vibrated.
  • a pair of arms 47 are mounted on upper end portions of the respective shafts 44.
  • the arms 47 are symmetrically outwardly curved so that they respectively have substantially semi-circular arcu- lar shape. They have respective flanges 47a provided at the end and facing each other.
  • Each of the arms 47 has a cylindrical stem portion 47b, which is fitted on a reduced-diameter upper end portion 44b of the shaft 44 and secured by a bolt 48 to the shaft 44.
  • Pair rods 49 extend from the flanges 47a at the end of the pair arms 47 toward each other. These rods 49 are coaxially aligned to each other.
  • Second elastic members 50 made of rubber are each mounted on the outer periphery of each rod 49.
  • a cylindrical grip member 51 encloses and couples together the two second elastic members 50.
  • a space is defined in the grip member 51 between the two rods 49 or two second elastic members 50, and a cylindrical impact mass body 52 is provided in this space.
  • the outer diameter of the impact mass body 52 is slightly smallerthan the inner diameter of the grip member 51, and also its axial dimension is slightly smaller than the axial dimension of the space between the two rods 49 or second elastic members 50.
  • the impact mass body 52 is capable of striking the grip member 51, rods 49 and second elastic members 50. Rivets 53 are provided for preventing the rotation of the grip member 51 relative to the rods 49. The rivets 53 are unnecessary in case where the second elastic members 50 and rods 49 are secured by baking to the grip member 51.
  • each shaft 44 and associated arm 47 constitute a mass body 54 which can be vibrated through the first elastic members 45.
  • Undesired vibrations are transmitted from the vibration source 41 through the plate-like support 42 to the opposite end casings 43.
  • the vibrations of each casing 43 are attenuated by the first elastic members 45 before being further transmitted to the mass body 54 consisting of the shaft 44 and arm 47.
  • the vibrations of the mass body 54 are transmitted through the rod 49, second elastic member 50 and grip member 51 to the impact mass body 52.
  • the mass and dimensions of the mass bodies 54 and impact mass body 52 and/or modulus of elasticity of the first and second elastic members 45 and 50 may be appropriately selected such that the mass bodies 54 will vibrate at the same frequency and the same phase as the vibration source 41 but the impact mass body 52 and grip member 51 will vibrate at the opposite phase to but at the same frequency as the vibrations of the mass bodies 54. That is, in this case the mass bodies 54 constitute a loop of vibrations, while the grip member 51 constitutes a node of vibrations. Thus, vibrations transmitted from the vibration source 41 are extremely attenuated and are substantially not transmitted to the grip member 51. Again with this embodiment a vibration suppression effect can be obtained over a considerably wide frequency range owing to the impact mass body 52.
  • the clearance between the impact mass body 52 and grip member 51 is set to a predetermined value, e.g., about 0.5 mm. Again in this embodiment, if the clearance is too small, the impact mass body 52 and grip member 51 would be vibrated in unison with each other, so that the vibration attenuation effect due to the collision of the impact mass body 52 can not be expected. If the clearance is too large, on the other hand, the frequency of collision of the impact mass body 52 would be too low to be able to suppress vibrations of the grip member 51.
  • Fig. 14 shows results of measurement of vibratory acceleration transmitted to a prior art grip used for a pitching hammer
  • Fig. 15 shows results of measurement of vibratory acceleration transmitted to the central portion of the grip member 51 of this embodiment of the vibration-proof grip device which is mounted on the same pitching hammer.
  • the impact mass body 52 in the above embodiment may be replaced with a plurality washers or steel balls.
  • the individual washers or steel balls will collide with one another, so that the overall motion or collision of the washers or steel balls which serve as the impact mass body is complicated, so that it is possible to improve the vibration-proof effect.
  • Fig. 16 shows a case, in which steel balls 60 are employed in lieu of the impact mass body 52 in the above embodiment. In this case, the extent, to which the steel balls fill the inner space of the grip member 51, is appropriately adjusted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (10)

1. Erschütterungsfeste Griffvorrichtung, umfassend:
(a) einen ersten Massenkörper (4, 15, 54), der mit einer Vibrationsquelle (41) verbunden ist;
(b) ein erstes elastisches Teil (6, 14, 50), das den ersten Massenkörper (4, 15, 54) umschließt;
(c) ein Griffteil (5, 13, 51), das um das erste elastische Teil (6, 14, 50) herum angebracht ist; und
(d) einen zweiten Massenkörper (9, 18, 52), der an dem Griffteil (5, 13, 51) vorgesehen ist;
dadurch gekennzeichnet, daß der zweite Massenkörper ein Aufprallmassenkörper (9, 18, 52) ist, der in dem Griffteil (5, 13, 51) derart vorgesehen ist, daß er die inneren Wände desselben bei Vibration treffen kann, und ein zweites elastisches Teil (2, 12, 45) zwischen der Vibrationsquelle (41) und dem ersten Massenkörper (4,15, 54) vorgesehen ist.
2. Erschütterungsfeste Griffvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß ein dritter Massenkörper (7, 17) auf dem Griffteil (5, 13) angebracht ist.
3. Erschütterungsfeste Griffvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der dritte Massenkörper (7) auf einem Ende des Griffteils (5) entfernt dem ersten Massenkörper (4) angebracht ist.
4. Erschütterungsfeste Griffvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß ein Paar von ersten Massenkörpern (4) auf der Vibrationsquelle über entsprechende zweite elastische Teile (2) derart angebracht ist, daß sie sich voneinander nach auswärts erstrecken, wobei ein Paar von Griffteilen (5) jeweils auf den ersten Massenkörpern (4) über entsprechende erste elastische Teile (6) angebracht ist, wobei ein Paar von Aufprallmassenkörpern (9) jeweils in den Griffteilen (5) derart vorgesehen ist, daß sie die inneren Wände der Griffteile (5) treffen können, und wobei ein Paar von dritten Massenkörpern (7) jeweils auf den Griffteilen (5) angebracht ist.
5. Erschütterungsfeste Griffvorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß jeder der dritten Massenkörper (7) auf einem Ende des Griffteils (5) entfernt von dem zugehörigen ersten Massenkörper (4) angebracht ist.
6. Erschütterungsfeste Griffvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß ein Paar von ersten Massenkörpern (15) auf einer Quelle von Vibrationen über entsprechende zweite elastische Teile (12), die aus Gummi oder dergleichen hergestellt sind, derart angebracht ist, daß sie sich aufeinander zu erstrecken, wobei das Griffteil (13) zwischen die ersten Massenkörper (15) über erste elastische Teile (14), die aus Gummi oder dergleichen hergestellt sind, gekoppelt ist, wobei ein Aufprallkörper (18) in dem Griffteil (13) vorgesehen ist, und wobei ein Paar von dritten Massenkörpern (15) an entgegengesetzten Enden des Griffteils (13) vorgesehen ist.
7. Erschütterungsfeste Griffvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß ein Paar von ersten Massenkörpern (54) auf einer Vibrationsquelle (41) über entsprechende zweite elastische Teile (45), die aus Gummi oder dergleichen hergestellt sind, angebracht ist; wobei jeder der ersten Massenkörper (54) einen Stab (49) an seinem Ende umfaßt, das entgegengesetzt dem zweiten elastischen Teil (45) ist, wobei sich die Stäbe (49) aufeinander zu erstrecken, wobei die ersten elastischen Teile (50) aus Gummi oder dergleichen hergestellt sind und jeder (50) auf dem äußeren Umfang von jedem Stab (49) angebracht ist, wobei das Griffteil (51) zylindrisch und derart vorgesehen ist, daß es die beiden ersten elastischen Teile (50) verbindet, und wobei der Aufprallmassenkörper (52) in dem Griffteil (61) zwischen den beiden Stäben (49) vorgesehen ist.
8. Erschütterungsfeste Griffvorrichtung, umfassend:
(a) einen ersten Massenkörper (21), der mit einer Vibrationsquelle verbunden ist;
(b) ein erstes elastisches Teil (22), das den ersten Massenkörper (21) umschließt;
(c) ein Griffteil (23), das um das erste elastische Teil (22) herum angebracht ist; und.
(d) einen zweiten Massenkörper (24), der an dem Griffteil (23) vorgesehen ist;
dadurch gekennzeichnet, daß der zweite Massenkörper ein Aufprallmassenkörper (24) ist, der in dem Griffteil (23) derart vorgesehen ist, daß er die inneren Wände desselben bei Vibration treffen kann, und der erste Massenkörper (21) ein zweites elastisches Teil zwischen der Vibrationsquelle und dem ersten elastischen Teil (22) bildet.
9. Erschütterungsfeste Griffvorrichtung nach irgendeinem der Ansprüche 1, 4, 6, 7 oder 8, dadurch gekennzeichnet, daß das Spiel zwischen dem Aufprallmassenkörper (18, 24, 52) oder jedem Aufprallmassenkörper (9) und dem inneren Umfang des Griffteils (13, 23, 51) oder jedem Griffteil (5) etwa 0,5 mm beträgt.
10. Erschütterungsfeste Griffvorrichtung nach irgendeinem der Ansprüche 1, 4, 6, 7 oder 8, dadurch gekennzeichnet, daß der Aufprallmassenkörper (18, 24, 52) oder jeder Aufprallmassenkörper (9) aus einer Mehrzahl von Aufprallmassenkörperstücken (31, 60) besteht.
EP19850103706 1984-03-30 1985-03-27 Schwingungsdämpfende Griffvorrichtung Expired EP0156387B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP61026/84 1984-03-30
JP6102684A JPS60207778A (ja) 1984-03-30 1984-03-30 防振ハンドル装置
JP59064136A JPS60207777A (ja) 1984-03-31 1984-03-31 防振ハンドル装置
JP64136/84 1984-03-31

Publications (3)

Publication Number Publication Date
EP0156387A2 EP0156387A2 (de) 1985-10-02
EP0156387A3 EP0156387A3 (en) 1987-05-20
EP0156387B1 true EP0156387B1 (de) 1990-11-07

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EP19850103706 Expired EP0156387B1 (de) 1984-03-30 1985-03-27 Schwingungsdämpfende Griffvorrichtung

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EP (1) EP0156387B1 (de)
DE (1) DE3580380D1 (de)

Cited By (1)

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US7676890B2 (en) 2005-10-25 2010-03-16 Black And Decker, Inc. Vibration dampening handle for a powered apparatus

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DE4011124A1 (de) * 1990-04-06 1991-10-10 Metabowerke Kg Vibrationsgedaempfter handgriff
SE465960B (sv) * 1990-05-04 1991-11-25 Atlas Copco Tools Ab Vibrationsdaempad handhaallen rotationsslipmaskin
DE9419182U1 (de) * 1994-11-30 1995-01-26 Irmer + Elze Maschinenfabrik GmbH & Co. KG, 32547 Bad Oeynhausen Druckluftwerkzeug
DE19503526A1 (de) * 1995-02-03 1996-08-08 Bosch Gmbh Robert Bohr- und/oder Schlaghammer mit abnehmbarem vibrationsgedämpften Handgriff sowie vibrationsgedämpfte Handgriffanordnung für einen Bohr- und/oder Schlaghammer
US5732602A (en) * 1996-03-12 1998-03-31 Schwartz; Noah Handle having resilient material incorporated therein
DE10005080C1 (de) * 2000-02-04 2001-08-02 Bosch Gmbh Robert Handwerkzeugmaschine mit zumindest einem Handgriff und wenigstens einem elastischen, schwingungsdämpfenden Element
DE50211364D1 (de) † 2002-09-19 2008-01-24 Aeg Electric Tools Gmbh Zusatzhandgriff
GB2402098B (en) * 2003-05-21 2007-10-17 Black & Decker Inc Vibration reduction apparatus for power tool and power tool incorporating such apparatus
DE202004012400U1 (de) * 2004-08-07 2005-12-22 Metabowerke Gmbh Elektrohandwerkzeuggerät
US7252156B2 (en) * 2005-03-31 2007-08-07 Makita Corporation Vibration isolation handle
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EP2532484B1 (de) * 2011-06-07 2017-01-11 Black & Decker Inc. Griffanordnung für ein elektrisches Werkzeug
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US8141209B2 (en) 2005-10-25 2012-03-27 Black And Decker, Inc. Vibration dampening handle for a powered apparatus

Also Published As

Publication number Publication date
EP0156387A3 (en) 1987-05-20
DE3580380D1 (de) 1990-12-13
EP0156387A2 (de) 1985-10-02

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