EP1674165A1 - Rüttelvorrichtung für einen tragbaren Gegenstand mit Schutzmitteln gegen mechanische Stö e - Google Patents

Rüttelvorrichtung für einen tragbaren Gegenstand mit Schutzmitteln gegen mechanische Stö e Download PDF

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Publication number
EP1674165A1
EP1674165A1 EP04106904A EP04106904A EP1674165A1 EP 1674165 A1 EP1674165 A1 EP 1674165A1 EP 04106904 A EP04106904 A EP 04106904A EP 04106904 A EP04106904 A EP 04106904A EP 1674165 A1 EP1674165 A1 EP 1674165A1
Authority
EP
European Patent Office
Prior art keywords
vibrating device
moving mass
fixed
mass
fixed structure
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.)
Withdrawn
Application number
EP04106904A
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English (en)
French (fr)
Inventor
Gérald Maurice Matthey
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP04106904A priority Critical patent/EP1674165A1/de
Priority to JP2005364542A priority patent/JP4866599B2/ja
Priority to US11/303,995 priority patent/US7339857B2/en
Priority to CN2005101323114A priority patent/CN1792471B/zh
Priority to EP20050112662 priority patent/EP1674166B1/de
Publication of EP1674165A1 publication Critical patent/EP1674165A1/de
Priority to HK06113873.9A priority patent/HK1093034A1/xx
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system

Definitions

  • the present invention relates to a vibrating device, which comprises means for protecting against mechanical shocks, for a portable object, such as a wristwatch.
  • the vibrating device comprises a mobile mass consisting in part of a magnetic structure connected to a fixed structure by means of a spring element and a coil connected to the fixed structure without mechanical contact with the moving mass.
  • the coil is electromagnetically coupled to the moving mass to allow it to oscillate in at least one direction of oscillation when it is fed by AC electrical signals at a determined frequency.
  • the vibrating device for a portable object can be used for the generation of a silent alarm or to signal a telephone call by vibration.
  • the coil must be electrically activated to actuate the moving mass to create a low frequency vibration that can be felt by the wearer of such an object.
  • the vibration can be controlled according to a specific programming of the portable object so as to warn the wearer of a specific event, for example a wake-up time, a phone call or other.
  • the vibrating device can equip a portable object, such as a wristwatch, a mobile phone, a traditional organizer, a pager or other small object.
  • a portable object such as a wristwatch, a mobile phone, a traditional organizer, a pager or other small object.
  • the vibrating device comprises a relatively large moving mass relative to the total mass of the device, it is necessary to protect it from mechanical shock. Therefore, it must be avoided that the mobile mass of the vibrating device undergoes movements due to shocks, relative to the fixed structure, too large amplitude in all directions. With such mechanical shocks, the element spring, maintaining the moving mass relative to the coil connected to the fixed structure, can suffer buckling or significant fatigue can quickly damage the vibrating device, or break.
  • the vibrating device consists of a cylindrical coil mounted on a body of a ferromagnetic structure, a moving mass which comprises a permanent magnet biased in a direction parallel to the axis of the coil, and elastic elements connecting the mobile mass to the ferromagnetic structure.
  • the ferromagnetic structure comprises electromagnetic excitation portions directed perpendicularly with respect to the axis of the coil, these excitation portions being opposite polar parts of the mobile mass.
  • a disadvantage of such a device described in EP 0 625 738 is that it is sensitive to shocks, because the moving mass must be important for the vibrating device equipping for example a wristwatch provides a vibration likely to be felt by the wearer of the watch. As a result, the elastic elements are liable to undergo significant deformation or to break during major mechanical shocks.
  • the main purpose of the invention is therefore to overcome the drawbacks mentioned above by producing a vibrating device capable of including means of protection against mechanical shocks.
  • the invention relates to a vibrating device which is characterized in that a fixed part of the vibrating device is arranged to cooperate with a part of the mobile mass to allow the mobile mass to oscillate freely in a mode normal operation of the vibrating device at least up to a determined maximum amplitude value, and to limit the amplitude of movement of the moving mass in a determined manner in all directions in order to protect the vibrating device from mechanical shocks.
  • An advantage of the vibrating device resides in the fact that it comprises protection means making it possible to limit the amplitude of the movement of the moving mass notably in directions other than the direction of oscillation of the moving mass during normal operation of the vibrating device.
  • the protection means also limit the amplitude of movement of the moving mass in the direction of oscillation to an amplitude value preferably slightly greater than the maximum amplitude value of oscillation of the moving mass in operation. normal. Since the amplitude of movement of said moving mass is limited, this preserves the spring element of the vibrating device from any mechanical stress (torsion, bending) due to mechanical shock.
  • the spring element is preferably composed of a base plate fixed on the fixed structure and two leaf springs coming from material with the base plate.
  • the two spring blades are disposed substantially perpendicular to the base blade on two opposite sides of said base blade.
  • the moving mass is held between the two leaf springs and is fixed on an end blade which connects the ends of the leaf springs opposite to the base blade.
  • the spring member further comprises a piece integral with the base blade which is disposed on one side of the base blade parallel to the direction of oscillation of the moving mass.
  • This flat piece is arranged perpendicular to the base blade and comprises a longitudinal opening in the direction of oscillation in combination with a surface of the fixed structure on which is fixed the base blade.
  • An element protruding from the moving mass is arranged partly through the longitudinal opening so that the longitudinal opening of the flat part defines means for protecting or guiding the element projecting from the moving mass.
  • the edges of the opening fulfill the role of stops for the protruding element in order to limit the movement of the moving mass to a determined range of motion which is an advantage of the vibrating device.
  • the width of the opening is chosen to be larger than the thickness of the part of the projecting element passing through the opening, but preferably less than twice the thickness of the portion of said projecting element in order to ensure protection of the vibrating device.
  • the length of the opening is instead chosen so as to let the mobile mass oscillate freely up to a maximum amplitude determined in normal operation of the vibrating device.
  • the guide means are defined by the flat part which is an integral part of the spring element is that it is thus not necessary to mount additional elements to the device to ensure its protection.
  • Several spring elements with their blades and their part can be easily made by stamping and folding operations of a metal sheet.
  • the vibrating device is thus made up of components that are easy to produce and assemble while providing protection against mechanical shocks of the moving mass.
  • the moving mass comprises a second projecting element disposed on one side of the mass opposite to the first projecting element.
  • This second projecting element is intended to be positioned in a guide housing of suitable size of a wall of an inner platform of a portable object when the vibrating device is fixed on the platform.
  • the invention also relates to a portable object, such as a wristwatch comprising a vibrating device cited above, the vibrating device being fixed on a platform of the portable object, which is characterized in that the platform shape comprises a wall with a guide housing in which is positioned a member protruding from the moving mass of the vibrating device, which is disposed on one side of the moving mass opposite to the fixed structure, the guide housing being of suitable size of in order to allow the moving mass to oscillate freely in a normal operating mode of the vibrating device at least up to an amplitude value determined maximum, and to limit the amplitude of movement of the moving mass in a determined manner in all directions to protect the vibrating device from mechanical shocks.
  • a portable object such as a wristwatch comprising a vibrating device cited above, the vibrating device being fixed on a platform of the portable object, which is characterized in that the platform shape comprises a wall with a guide housing in which is positioned a member protruding from the moving mass of the vibrating device, which is
  • the vibrating device and a drive circuit of the device are intended to equip a small portable object, such as a wristwatch so as to provide a silent alarm by vibration of a moving mass of the vibrating device.
  • FIGS 1 and 2 show a preferred embodiment of the vibrating device 1 to be mounted in a housing of a portable object, such as a wristwatch.
  • This vibrating device 1 is defined as a vibrating half Voice Coil device. It is preferably used to generate a silent alarm or to signal telephone calls by vibration.
  • the vibrating device 1 comprises an annular flat coil 2, which is fixed at the edge to a nonmagnetic fixed structure 5.
  • the coil 2 may comprise one or more substantially coaxial contiguous turns.
  • Two electrical connection terminals 7 of the coil 2 are shown in FIG. 1 on a lower part of the non-magnetic structure 5.
  • the vibrating device 1 further comprises a mobile mass 3a, 3b, 6 and 15 composed in part of a magnetic structure.
  • This mobile mass is connected to the non-magnetic structure 5 without mechanical contact with the coil using a spring element 4, which comprises a flat part 4d explained below to serve as guide means of the mobile mass to protect the device of any mechanical shock.
  • the magnetic structure of the mobile mass comprises a ferromagnetic plate 6 on which are fixed two permanent magnets 3a and 3b adjacent direction of opposite magnetization opposite respectively two diametrically opposite portions of the coil.
  • the magnets generate a magnetic field B, which is conducted in the ferromagnetic plate 6, in a direction along the Y axis perpendicular to the plane of the coil.
  • the current flowing in the coil portions is substantially perpendicular to the magnetic field B in the direction of the Z axis.
  • a Laplace force in a direction along the X axis is obtained to oscillate the moving mass in a plane substantially perpendicular to the axis of the coil 2 in a determined oscillation direction.
  • the movement of the moving mass is substantially sinusoidal in the opposite directions represented by O + and O- with respect to a central rest position of the moving mass.
  • the resonant frequency of the moving mass may be of the order of 135 Hz for example.
  • This complementary plate 15 may be made of a material such as brass or tungsten.
  • the spring element 4 which holds the mobile mass, comprises a base plate 4c fixed by two screws 9 by means of a non-magnetic plate 5 'on the non-magnetic fixed structure 5, and two leaf springs 4a and 4b coming from material with the base blade and disposed on two opposite sides of the base blade.
  • the leaf springs 4a and 4b are arranged perpendicular to the base plate 4c, so that the cross section forms a U.
  • An end plate 4e connects the ends of the leaf springs 4a and 4b opposite to the base plate.
  • This end plate on which is fixed by laser welding or gluing for example a portion of the ferromagnetic plate 6, is in a plane substantially parallel to the base plate.
  • the ferromagnetic plate 6 and the complementary plate 15 are placed between the leaf springs 4a and 4b without direct contact with each leaf spring.
  • the height of the ferromagnetic plate 6 and complementary 15 is lower than the height of the leaf springs 4a and 4b.
  • Each spring blade may comprise two longitudinal through slots 8, which are dimensioned to adjust a theoretical resonance frequency of the vibrating device.
  • the dimensions of the vibrating device shown in FIGS. 1 and 2 may be 10 mm long, 4 mm wide and 2 mm high with a coil which may comprise up to 400 substantially contiguous turns. coaxial.
  • the spring element 4 comprises a flat part 4d which is made of material with the base plate 4c and is arranged substantially perpendicular to the base plate facing the moving mass and parallel to the direction of oscillation of the mobile mass.
  • the flat part 4d comprises a longitudinal opening of substantially rectangular shape 14 in the direction of oscillation in combination with a surface of the fixed structure 5 on which is fixed the base plate 4c.
  • the ferromagnetic plate 6 of the moving mass comprises a projecting element 16 which penetrates through the longitudinal opening so that a part of the projecting element is disposed in the opening 14 with a certain clearance.
  • This longitudinal opening defines means for guiding the moving mass.
  • the edges of the opening define on the other hand mechanical stops to limit the amplitude of movement of the moving mass in a determined manner at least in the directions along the X and Y axes.
  • the width of the opening 14 is of dimension slightly greater than the thickness of the portion of the element projecting into the opening, but less than twice the thickness of this portion of said projecting element.
  • the projecting element may not be of uniform thickness in the direction of the Z axis. It could take the form of a hook with a thickness of the parts of the projecting element outside the opening greater than the width of the opening to provide better protection against shocks also in the direction of the Z axis.
  • the L-shaped piece instead of making an opening in the room 4d, it could be envisaged to configure the L-shaped piece to define a housing with the surface of the fixed structure 5 on which is fixed the base plate 4c.
  • this embodiment requires making two folds of the part 4d and forming stops at the ends of the part in the longitudinal direction to limit the amplitude of movement of the moving mass in the direction of oscillation according to the invention.
  • X axis X axis.
  • the vibrating device comprises the means of protection against mechanical shocks through the part 4d which is part of the spring element 4, no additional element is therefore necessary to ensure the protection of the vibrating device. Therefore, the vibrating device is easy to perform while being protected from mechanical shock.
  • the vibrating device 1 further comprises a second projecting element 26 intended to cooperate with a housing of a wall of a platform explained below with reference Figures 3, 4a and 4b.
  • This second projecting element 26 is placed on one side of the moving mass opposite to the first projecting element 16.
  • This second projecting element comes from material with the ferromagnetic plate as the first projecting element.
  • the two projecting elements are arranged on a central line of the moving mass perpendicular to the direction of oscillation of said mass.
  • the projecting elements 16 and 26 can be made of material with the ferromagnetic plate 6 as described above. However, they can be provided on the complementary plate 15 rather than on the ferromagnetic plate 6. These projecting elements can also be attached to one or the other plate or to the intersection of the two plates by any means. They can be screwed, welded or glued to the plate (s).
  • FIGs 3, 4a and 4b there is shown the vibrating device 1 mounted on a platform 10 of a portable object, which is preferably a wristwatch. So as not to overload the figures, it is shown that the platform 10 which is housed in a not shown case of the wristwatch.
  • This platform can be a watch plate.
  • a printed circuit, not shown, can be made on a part of this platform 10 for the electrical connection of the various electrical components of the watch.
  • the vibrating device is fixed on the platform 10 so that the connection terminals 7 of the coil come into contact with the metal tracks 17 of the platform 10.
  • These metal tracks 17 are connected in particular to a drive circuit of the vibrating device which is not shown.
  • the projecting element 26 When fixing the vibrating device 1 on the platform 10, the projecting element 26 is positioned in a guide housing 21 formed in a rigid wall 20 partially surrounding the vibrating device 1. When the moving mass is in position resting, the projecting element 26 is positioned in the center of this guide housing 21.
  • the housing 21 has a section, as shown in Figure 4b, of substantially rectangular shape with a width slightly greater than the thickness of the projecting element 26, but less than twice the thickness of this projecting element.
  • the length of the housing 21 in the direction of oscillation along the X axis is dimensioned so as to allow the moving mass to oscillate freely in the oscillation direction at least up to a determined maximum amplitude value.
  • the edges of this housing serve as stops to the projecting element 26 to limit the range of motion in all directions.
  • this guide housing 21 of the wall 20 having a determined depth, and to the flat part 4d provided with the guide opening of the projecting element 16, a good protection against mechanical shocks in all directions of the vibrating device is ensured.
  • the vibrating device can be designed by the skilled person without departing from the scope of the invention defined by the claims. It can be provided with several elements protruding from each side of the moving mass to cooperate with the opening of the room or with the housing of the wall of the platform of the portable object. It can also be provided that the fixed structure or the part of the spring element comprises a protuberance guided in a longitudinal groove formed in a portion of the moving mass opposite the structure to provide protection against mechanical shock of the device vibrant. It may be provided that an additional fixed portion of the vibrating device is disposed on a side opposite to the fixed base blade of the spring member. This additional fixed part comprises a guide housing for the second element projecting from the vibrating device to ensure protection of the vibrating device by the projecting elements placed on two opposite sides of the mobile mass cooperating with the guide means.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Telephone Set Structure (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
EP04106904A 2004-12-22 2004-12-22 Rüttelvorrichtung für einen tragbaren Gegenstand mit Schutzmitteln gegen mechanische Stö e Withdrawn EP1674165A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP04106904A EP1674165A1 (de) 2004-12-22 2004-12-22 Rüttelvorrichtung für einen tragbaren Gegenstand mit Schutzmitteln gegen mechanische Stö e
JP2005364542A JP4866599B2 (ja) 2004-12-22 2005-12-19 携帯用品用の機械的衝撃保護手段が設けられた震動装置
US11/303,995 US7339857B2 (en) 2004-12-22 2005-12-19 Vibrating device provided with mechanical shock protection means for a portable object
CN2005101323114A CN1792471B (zh) 2004-12-22 2005-12-19 用于便携式物体的具有机械冲击保护件的振动装置
EP20050112662 EP1674166B1 (de) 2004-12-22 2005-12-21 Rüttelvorrichtung für einen tragbaren Gegenstand mit Schutzmitteln gegen mechanische Stöße
HK06113873.9A HK1093034A1 (en) 2004-12-22 2006-12-18 Vibrating device provided with mechanical shock protection means for a portable object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04106904A EP1674165A1 (de) 2004-12-22 2004-12-22 Rüttelvorrichtung für einen tragbaren Gegenstand mit Schutzmitteln gegen mechanische Stö e

Publications (1)

Publication Number Publication Date
EP1674165A1 true EP1674165A1 (de) 2006-06-28

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EP04106904A Withdrawn EP1674165A1 (de) 2004-12-22 2004-12-22 Rüttelvorrichtung für einen tragbaren Gegenstand mit Schutzmitteln gegen mechanische Stö e

Country Status (5)

Country Link
US (1) US7339857B2 (de)
EP (1) EP1674165A1 (de)
JP (1) JP4866599B2 (de)
CN (1) CN1792471B (de)
HK (1) HK1093034A1 (de)

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EP2073077A1 (de) * 2007-12-21 2009-06-24 Omega SA Stoßsichere vorrichtung für ein antriebsorgan eines uhrwerks
CH704199A2 (fr) * 2010-12-10 2012-06-15 Montres Breguet Sa Mecanisme de sonnerie d'une montre ou d'une boite a musique.
CN107621875A (zh) * 2017-09-04 2018-01-23 信利光电股份有限公司 一种触摸显示模组
US10749404B2 (en) * 2018-01-12 2020-08-18 Ford Global Technologies, Llc Terminal connector assembly in overmolded single unit with coil end windings, temperature sensors, and cooling channel
CN110225152B (zh) * 2019-04-25 2021-11-09 维沃移动通信有限公司 一种振动结构、振动方法和终端设备
JP7386062B2 (ja) * 2019-05-13 2023-11-24 アルプスアルパイン株式会社 振動発生装置
EP3738683B1 (de) * 2019-05-13 2022-03-09 Alps Alpine Co., Ltd. Vibrationsgenerator mit einem magneten zwischen einem oberen und unteren joch
WO2021000184A1 (zh) * 2019-06-30 2021-01-07 瑞声声学科技(深圳)有限公司 振动电机
CN214674820U (zh) * 2020-12-22 2021-11-09 瑞声光电科技(常州)有限公司 一种振动马达
CN214314997U (zh) * 2020-12-25 2021-09-28 瑞声光电科技(常州)有限公司 振动马达
CN214544062U (zh) * 2020-12-25 2021-10-29 瑞声光电科技(常州)有限公司 一种振动马达
CN214544065U (zh) * 2020-12-25 2021-10-29 瑞声光电科技(常州)有限公司 一种振动马达
US11831215B2 (en) * 2021-05-06 2023-11-28 Aac Microtech (Changzhou) Co., Ltd. Linear vibration motor
JP2023047774A (ja) 2021-09-27 2023-04-06 アルプスアルパイン株式会社 振動発生装置

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DE4117227A1 (de) * 1991-05-27 1992-12-03 Philips Patentverwaltung Haushaltsvibrationsgeraet mit einem vibrationsteil
EP0625738A1 (de) * 1993-05-18 1994-11-23 Asulab S.A. Stiller elektromagnetischer Alarm
US6492899B1 (en) * 1998-11-26 2002-12-10 Tokyo Parts Industrial Co., Ltd. Electromagnetic converter having superior anti-shock property

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EP0625738A1 (de) * 1993-05-18 1994-11-23 Asulab S.A. Stiller elektromagnetischer Alarm
US6492899B1 (en) * 1998-11-26 2002-12-10 Tokyo Parts Industrial Co., Ltd. Electromagnetic converter having superior anti-shock property

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Also Published As

Publication number Publication date
CN1792471B (zh) 2010-10-13
JP2006175433A (ja) 2006-07-06
US20060133218A1 (en) 2006-06-22
HK1093034A1 (en) 2007-02-23
CN1792471A (zh) 2006-06-28
US7339857B2 (en) 2008-03-04
JP4866599B2 (ja) 2012-02-01

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