WO2002037062A1 - Compteur de type a aimant mobile et dispositif de compteur utilisant ledit compteur de type a aimant mobile - Google Patents
Compteur de type a aimant mobile et dispositif de compteur utilisant ledit compteur de type a aimant mobile Download PDFInfo
- Publication number
- WO2002037062A1 WO2002037062A1 PCT/JP2001/009170 JP0109170W WO0237062A1 WO 2002037062 A1 WO2002037062 A1 WO 2002037062A1 JP 0109170 W JP0109170 W JP 0109170W WO 0237062 A1 WO0237062 A1 WO 0237062A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnet
- movable
- pointer
- instrument
- movable magnet
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D13/00—Component parts of indicators for measuring arrangements not specially adapted for a specific variable
- G01D13/22—Pointers, e.g. settable pointer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R7/00—Instruments capable of converting two or more currents or voltages into a single mechanical displacement
- G01R7/04—Instruments capable of converting two or more currents or voltages into a single mechanical displacement for forming a quotient
- G01R7/06—Instruments capable of converting two or more currents or voltages into a single mechanical displacement for forming a quotient moving-iron type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
Definitions
- the present invention relates to a movable magnet type instrument for driving a pointer and an instrument device using the movable magnet type instrument.
- a cross-coil movable magnet instrument As an instrument main body applied to a vehicle instrument device, for example, a cross-coil movable magnet instrument is generally well known.
- a movable magnet type instrument is also called an air-comb movement, in which a two-pole magnetized magnet with N and S poles is accommodated in a space formed in a housing, and a rotor shaft fixed to a rotor magnet is attached to the housing.
- a pointer is attached to support.
- a pair of coils are wound around the housing so as to be orthogonal to each other.
- the pointer can be made to move angularly according to the measured amount.
- a shield case made of a magnetic material such as an iron-nickel alloy is used to prevent the two-pole magnetized rotor magnet from being affected by geomagnetism. Part was covered. .
- a shield case made of a magnetic material such as an iron nickel alloy was necessary in consideration of magnetic interference with a magnet or the like and magnetic efficiency. For this reason, the number of parts could not be reduced, and it was difficult to reduce the cost because the magnetic material such as iron-nickel alloy forming the shield case was expensive.
- the movable device Since a plurality of magnet-type instruments are provided, the cost of the movable magnet-type instrument adds to the cost of the instrument as it is, leading to an increase in the cost of the instrument.
- the present invention has been made in view of this point, and a main object of the present invention is to provide a movable magnet type instrument capable of reducing costs and an instrument device using the movable magnet type instrument. It is. Disclosure of the invention
- a movable magnet type meter includes: a rotor magnet magnetized so that adjacent magnetic poles are different from each other; and a pair of coils provided around the rotor magnet and whose winding center axes intersect at right angles.
- the acute angle r is 360 Z 2 n (n is 4 or more). In multiples of 2).
- a protective cover made of a ferromagnetic material for protecting the coil is provided.
- a transmission means for transmitting the rotation of the rotatable magnet to the pointer is provided between the pointer and the mouth magnet, and the pointer rotates at a lower speed than the rotor magnet through the transmission means.
- the meter device using the movable magnet type meter is a meter device using at least one or more movable magnet type meters, wherein: a rotor magnet having at least four or more magnetic poles magnetized; A pair of coils provided around the rotor magnet, the winding center axes of which intersect non-perpendicularly, and a pointer that rotates by using the rotor magnet as a drive source; the number of magnetic poles of the rotor magnet is n; At least one movable magnet instrument is provided, where r is the acute angle formed by the intersection of the winding center axes, and the acute angle r is an angle determined by 360 Z 2 n ( ⁇ is 4 or more and a multiple of 2). It is a thing.
- At least one of the movable magnet-type instruments is provided with a protection case made of a non-magnetic material for protecting the coil.
- At least one of the movable magnet-type instruments includes the pointer and the rotor magnet. And transmitting means for transmitting the rotation of the rotatable magnet to the pointer during rotation of the pointer, and rotating the pointer at a lower speed than the rotatable magnet.
- FIG. 1 is a plan view of a movable magnet type instrument according to a first embodiment of the present invention
- FIG. 2 is a cross-sectional view taken along line AA of FIG. 1
- FIG. FIG. 4 is a block diagram showing control means
- FIG. 5 is a waveform diagram of a drive signal supplied to the coil
- FIG. 6 is a diagram showing the number of magnetic poles and the winding of the coil in the present embodiment.
- FIG. 7 is an explanatory diagram showing the relationship between the acute angle formed by the rotation center axis and
- FIG. 7 is a diagram showing the relationship between the number of magnetic poles and the acute angle formed by the winding center axis of the coil in a modification of the present embodiment.
- FIG. 1 is a plan view of a movable magnet type instrument according to a first embodiment of the present invention
- FIG. 2 is a cross-sectional view taken along line AA of FIG. 1
- FIG. 4 is a block diagram showing control means
- FIG. 5 is
- FIG. 8 is an explanatory diagram showing the relationship between the number of magnetic poles and the acute angle formed by the winding center axis of the coil in a modification of the present embodiment
- FIG. FIG. 10 is a cross-sectional view of an instrument
- FIG. 10 is a front view of the instrument device of the third embodiment
- FIG. 11 is an instrument device of the fourth embodiment. Is a front view
- the first Fig. 2 is a front view of the instrument apparatus of the fifth embodiment
- the first FIG. 3 is a front view of the instrument apparatus of the sixth embodiment.
- the movable magnet type meter Ml has a predetermined distance between the first shaft 2 of the magnet 1 and the first shaft 2 supporting the rotor magnet 1.
- a second shaft 3 provided in parallel with a gap, a housing 4 for supporting the first and second shafts 2 and 3 and accommodating the rotor magnet 1 and a transmission mechanism described later;
- a pair of coils 5, 6 wound around the outside of the housing 4, a protective case 7 including a part of the coils 5, 6 and covering the outer periphery of a required portion of the housing 4, and each end of the coils 5, 6 are conductive.
- a transmission means TR for transmitting the rotation of 1 to the pointer 9 is provided.
- the rotor magnet 1 has a total of 4 poles, so that the magnetic poles adjacent to each other have different polarities between the N pole and the S pole, and is a disk-shaped magnetized in the radial direction with an area ratio of 1/4 equal to each other.
- the first shaft 2 is supported by the housing 4 so as to rotate (cooperate) with the first shaft 2 (see FIG. 3).
- the transmission means TR includes a first gear TR 1 fixed to the first shaft 2 and interlocking with the rotor magnet 1, and a second gear fixed to the second shaft 3 while being connected to and coupled to the first gear TR1.
- the first gear TR 1 is formed to have a smaller diameter than the second gear TR 2, and the outer periphery thereof has “1 4” gears. Continuous teeth are formed.
- the second gear T R2 has a larger diameter than the first gear T R1, and has “56” continuous teeth formed on the outer periphery thereof.
- the housing 4 is made of a synthetic resin, and is divided into a first frame 41 located on the lower side and a second frame 42 located on the upper side in FIG.
- a cavity S is formed between the frames 41, 42, and the rotor magnet 1 and the transmission means TR are housed in the cavity S, and the first and second shafts 2, 3 are pivotally supported.
- One end of the shaft 3 protrudes outside from the housing 4, and a pointer 9 is attached to the tip.
- the coils 5 and 6 are located on the radial outer periphery of the magnet 1 where the second gear TR 2 is not disposed, and the winding diameter corresponding to the radial peripheral surface of the rotor magnet 1 is directed toward the first shaft 2.
- the winding center axes CI and C2 of the coils 5 and 6 extend toward the first shaft 2 and intersect at the rotation center RC of the rotor magnet 1 (intersection point).
- the acute angle r formed by the intersection of the winding center axes C 1 and C 2 is set to approximately 45 degrees in the present embodiment.
- the directions of the winding central axes C I, C 2 of the coils 5, 6 are the directions in which the coils 5, 6 generate a magnetic field.
- the acute angle r of 45 degrees It is an intermediate angle between the 90-degree angle formed by the pole and the N pole on the opposite side and one of the adjacent S poles.
- the acute angle r in the case of a 6-pole magnet 1 is, for example, the coil 5; with the N pole facing, the 180 degree opposite S pole and the opposite side
- the angle is 30 degrees, which is an intermediate angle between the 60 degrees formed by the S pole and the adjacent N pole.
- the acute angle r formed by intersecting the winding center axes C 1 and C 2 of 45 degrees may be formed by the arrangement of the coils 5 and 6 as shown in FIG.
- a cup-shaped protective case 7 is mounted on the housing 4 wound with the coils 5 and 6.
- a required area of the housing 4 excluding an area corresponding to the second gear TR2 that is, The protective case 7 covers only the area of the housing 4 opposite to the pointer 9 without including the area corresponding to the second gear TR2.
- the protection case 7 is made of a non-magnetic material such as aluminum and is provided to protect the coils 5 and 6. Since the protective case 7 is formed without using an expensive magnetic material as described above, the cost can be reduced.
- the material of the protective cover 7 is not limited to aluminum but may be a synthetic resin.
- control means 120 including a control unit 100 and a drive processing unit 110, as shown in FIG.
- the control unit 100 is composed of a microcomputer, and includes a CPU for executing the control program, a ROM for storing the control program, a RAM for temporarily storing the processed data, and an interface (I / F) for inputting an external signal. ), Which are installed on the vehicle body including a bus connecting each of the CPU, ROM, RAM, and interface. In this case, a sensor that detects rotation of the output shaft of the transmission and outputs a predetermined pulse signal Is connected.
- the control unit 100 calculates the pulse signal and converts the pulse signal into a designated position on a dial (not shown) described later. Then, a process for obtaining the designated angle data on the dial of the hands 9 is performed, and the designated angle data is output to the drive processing unit 110 at the subsequent stage.
- the drive processing unit 110 includes a ROM unit that stores the amount of current applied to each of the coils 5 and 6 according to the indicated angle data, a DZA conversion unit that converts an output value of each ROM unit into a corresponding analog amount, The drive processing unit 110 includes a drive II output unit for supplying a drive voltage corresponding to the analog amount to each of the coils 5 and 6.
- the indicated angle data starting from 0 is a drive signal having a different electrical angle (phase angle), specifically, a sinusoidal waveform, a cos waveform voltage signal having a different phase according to the electrical angle as shown in FIG.
- the signals are converted into voltage signals and supplied to the coils 5 and 6. -
- a combined magnetic field vector corresponding to the measured amount is formed by each of the coils 5 and 6, and the rotor magnet 1 rotates by an angle corresponding to the measured amount according to the combined magnetic field vector, and the pointer 9 accordingly. Rotate to indicate the measured quantity on the dial.
- the transmission means TR functions as a deceleration transmission means, whereby the pointer 9 is decelerated and rotated to 1 Z4 with respect to the rotatable magnet 1, so the pointer 9 is set to Rotation angle of the rotor magnet 1 requires a rotation angle of 4 times the deflection angle (rotation angle) of the pointer 9 to rotate.
- the input signal from the sensor 130 corresponds to the deflection angle of the pointer 9 'of 90 degrees
- a drive signal for rotating the magnet 1 by 360 degrees in mechanical angle a drive signal corresponding to 2 ⁇ minutes (one cycle) in electrical angle is supplied twice to each coil 5 and 6 repeatedly. Will be.
- the rotation angle of the rotor magnet 1 obtained by supplying a drive signal equivalent to 2 ⁇ in electrical angle (hereinafter referred to as signal supply for 27C) is 180 degrees in mechanical angle, and the pointer angle through the transmission means TR.
- the deflection angle (rotation angle) of 9 is also a mechanical angle of 45 degrees, and is larger than 45 degrees, and the deflection angle of the pointer 9, for example, 90 degrees, 135 degrees, and 180 degrees.
- 27 ⁇ signal supply In order to obtain the signal, 27 ⁇ signal supply must be continuously and repeatedly supplied.
- the rotor magnet 1 With the above configuration, it is possible to drive the rotor magnet 1 with less influence of geomagnetism or the like than in the case where the magnet 1 is magnetized with two poles. Therefore, the rotor magnet 1 can be driven without covering the magnet 1 with a magnetic material, and only for the purpose of protecting the coils 5 and 6 from physical damage, etc. It is only necessary to form the protective cover 7 with a material, and the cost can be reduced as compared with the conventional movable magnet type instrument.
- the number of magnetic poles ⁇ of the rotor magnet 1 is 4 or more (4 or more is a natural number ( ⁇ ) times 2).
- the acute angle r formed by supplying the drive signal to the pair of coils 5 and 6 and formed by intersecting the magnetic field directions is the fourth angle when the number of magnetic poles is “4”.
- the acute angle r may be set to half (172) of (360 degrees Z number of magnetic poles n). Also, although not shown, when the number of magnetic poles is “8”, the acute angle r may be set to 22.5 degrees, which is half (1Z2) of (360 ° no magnetic pole number n).
- the transmission means TR is constituted by the two gears TR1 and TR2, but the number of gears constituting the transmission means TR is arbitrary.
- the first gear TR11 which is held together with the mouth magnet 1 so as to be independently rotatable with respect to the first shaft 2 and rotates in conjunction with the rotor magnet 1.
- the rotation of the gear TR11 is transmitted to the second gear TR12, and the rotation of the second gear TR12 is transmitted to the fourth gear TR14 through the third gear TR13. It may be configured to drive the finger ⁇ 9 mounted on the first shaft 2.
- the transmission means TR for decelerating and rotating, it is possible to provide a movable magnet type meter M2 which can further suppress the influence of the geomagnetism on the mouth magnet 1 and can give a high-precision instruction. Can be.
- the protective case 7 is provided. However, if it is not necessary to protect the coils 5, 6, etc., the protective case 7 may not be provided. With this configuration, the number of parts can be reduced. It is also possible to reduce costs.
- the meter device 11 of the present embodiment is used for a vehicle such as an ordinary automobile, and is called a so-called combination meter, and indicates and displays a plurality of measurement items with one movable magnet type meter.
- This instrument 11 has multiple movable magnets It has instruments m1 to m4. These movable magnet instruments m1 to m4 are mounted on a hard circuit board 12 made of glass epoxy resin or the like.
- the movable magnet-type instruments m3 and m4 are arranged adjacent to each other. Are located. In addition, the movable magnet instruments m l and m 2 are separated from each other to such an extent that there is no danger of magnetic interference.
- the movable magnet-type instruments ml, m2, m3, and m4 are shown in a simplified manner, and the movable magnet-type instruments m1 and m2 have the same configuration as the movable magnet-type instrument M1 described above.
- the movable magnet-type instruments m3 and m4 have the same basic configuration as the movable magnet-type instrument M1.
- a protective case 13 formed of a magnetic material such as permalloy described later is provided.
- the movable magnet type meter ml is an engine tachometer that indicates and displays the engine speed.
- the movable magnet type meter m2 is a speedometer indicating the speed of the vehicle.
- the movable magnet type meter m3 is an engine water temperature gauge for indicating and displaying the temperature of the engine cooling water.
- the movable magnet type meter m4 is a fuel gauge for indicating and displaying the remaining amount of fuel such as gasoline in the vehicle.
- a dial or the like provided with a scale or an indicator attached to the scale is provided behind the pointer 9, but it is unnecessary in the description of the present embodiment.
- the components are not shown.
- the movable magnet-type meters ml and m2 have an expensive protective case made of a magnetic material because the magnet 1 is less affected by terrestrial magnetism, etc. than the magnet 1 is magnetized with two poles.
- the rotor magnet 1 can be driven without using the magnet 1 without covering the magnet 1 with the protective case 13, for example, to protect the coils 5 and 6 from physical damage. It is only necessary to provide the protective case 7 with an inexpensive material other than a magnetic material, and the cost can be reduced as compared with the conventional movable magnet type instrument main body.
- the movable magnet type meter m3 used in the present embodiment will be described. Since the movable magnet type meter m 4 has the same structure as the movable magnet type meter m 3, the movable magnet type The description of the meter m4 is omitted.
- the protective case 13 is made of a magnetic material.
- the movable magnet meter ml and m 2 that do not require the protective case 13 made of an expensive magnetic material are used for the meter device 11, and the (1) The manufacturing cost can be reduced. 'In particular, in the instrument device 11 using a large number of movable magnet instruments, the production cost can be further reduced.
- the measuring device 11 is provided with a movable magnet type meter m 2 constituting the speedometer of the embodiment on a relatively small circuit board 12 a compared to the circuit board 12 of the third embodiment. It has one.
- Such an instrument device 11 indicates and displays only the speed of the vehicle, and is applied to the relatively inexpensive instrument device 11.
- the movable magnet-type instrument m 2 does not include an expensive protective case 13 made of a magnetic material. It is possible to reduce the manufacturing cost by using it.
- an instrument device 11 is provided with the same movable magnet instruments ml, m2, and m4 as those in the third embodiment on a circuit board 12.
- the meter device 11 components using a magnetic material such as a magnetic force 14 are mounted on a circuit board 12. If it is necessary to arrange the movable magnet type meter m4 near such parts using magnetic materials, move the movable magnet type meter m4 provided with the protective case 13 made of magnetic material. Just use it.
- only the fuel gauge for indicating and displaying the remaining amount of fuel is indicated and indicated, and the engine water temperature meter is indicated by using a light source (not shown), for example, a light emitting diode. It has a configuration with only a formula meter m4.
- a movable magnet instrument m4 equipped with a protective case 13 made of a magnetic material is used only in the vicinity of a part using a magnetic material, etc., and is separated from the part using a magnetic material.
- the manufacturing cost of the instrument device 1 can be reduced by using the movable magnet instruments ml and m2 provided with the protective case ⁇ ⁇ made of a nonmagnetic material.
- the production cost can be further reduced.
- the instrument device 11 of the present embodiment includes a plurality of movable magnet instruments m5 to m7.
- the movable magnet instruments m5 to m7 are different from the movable magnet instruments m1 to m4 of the third to fifth embodiments in that they do not include the protective cases 7 and 16 themselves.
- the movable magnet type meter m5 is an engine tachometer for indicating and displaying the engine speed.
- the movable magnet type meter m6 is a speedometer for indicating and displaying the speed of the vehicle.
- the movable magnet type meter m7 is a fuel gauge for indicating and displaying the remaining amount of gasoline and fuel of the vehicle.
- the present invention can provide a movable magnet type instrument that can reduce costs, and can be used to reduce the cost of an instrument device using a movable magnet type instrument.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Instrument Panels (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020027008436A KR20020067924A (ko) | 2000-10-31 | 2001-10-18 | 가동 자석식 계기와 이 가동 자석식 계기를 이용한 계기장치 |
US10/168,856 US6727622B2 (en) | 2000-10-31 | 2001-10-18 | Movable-magnet type meter and meter device using this movable-magnet type meter |
EP01976754A EP1335191A4 (en) | 2000-10-31 | 2001-10-18 | MOBILE MAGNET TYPE COUNTER AND COUNTER DEVICE USING SAID MOBILE MAGNET TYPE COUNTER |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000337260A JP3371961B2 (ja) | 2000-10-31 | 2000-10-31 | 可動磁石式計器 |
JP2000-337260 | 2000-10-31 | ||
JP2000-399788 | 2000-12-28 | ||
JP2000399788A JP2002202160A (ja) | 2000-12-28 | 2000-12-28 | 計器装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002037062A1 true WO2002037062A1 (fr) | 2002-05-10 |
Family
ID=26603429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/009170 WO2002037062A1 (fr) | 2000-10-31 | 2001-10-18 | Compteur de type a aimant mobile et dispositif de compteur utilisant ledit compteur de type a aimant mobile |
Country Status (5)
Country | Link |
---|---|
US (1) | US6727622B2 (ja) |
EP (1) | EP1335191A4 (ja) |
KR (1) | KR20020067924A (ja) |
CN (1) | CN1229628C (ja) |
WO (1) | WO2002037062A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4298311B2 (ja) * | 2003-02-07 | 2009-07-15 | キヤノン株式会社 | モータ |
JP4458988B2 (ja) * | 2004-08-31 | 2010-04-28 | 日本精機株式会社 | マグネットロータおよびそのマグネットロータを備えた可動磁石式計器、そのマグネットロータを備えたステッピングモータ |
FR2882460B1 (fr) * | 2005-02-24 | 2009-10-02 | Peugeot Citroen Automobiles Sa | Dispositif d'indication, notamment pour vehicule automobile |
KR102260144B1 (ko) | 2021-01-04 | 2021-06-09 | 주식회사 유림테크 | 가동 코일형 절연저항 및 전압 계기 장치 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0488864U (ja) * | 1990-02-21 | 1992-08-03 | ||
JPH08251902A (ja) * | 1995-03-07 | 1996-09-27 | Canon Inc | ステップモータ |
JP2001289876A (ja) * | 2000-01-31 | 2001-10-19 | Nippon Seiki Co Ltd | 可動磁石式計器 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7308770A (en) * | 1973-06-22 | 1974-12-24 | Speedometer-kilometer meter for vehicles - pulse generator drives stepping motor connected to kilometer counter and speed indicator | |
JPS5387692A (en) | 1977-01-12 | 1978-08-02 | Nec Corp | Moving magnet type display device |
US4782353A (en) * | 1984-02-27 | 1988-11-01 | Seikosha Co., Ltd. | Stepping motor-driven sector opening/closing device |
JPH06101922B2 (ja) | 1990-07-30 | 1994-12-12 | いすゞ自動車株式会社 | 渦電流式減速装置 |
FR2706039B1 (fr) * | 1993-06-04 | 1995-08-04 | Sagem | Logomètre. |
US5578918A (en) * | 1994-07-21 | 1996-11-26 | Floscan Instrument Company, Inc. | Modular two or three coil movement having a magnet homing free cross sectional shape of the shield pot |
FR2742940B1 (fr) * | 1995-12-22 | 1998-03-13 | Moving Magnet Tech | Moteur diphase, notamment un moteur d'horlogerie ou un moteur pour l'entrainement d'une aiguille d'un afficheur |
FR2747196B1 (fr) * | 1996-04-05 | 1998-06-26 | Magneti Marelli France | Dispositif moteur a commande electromagnetique, notamment logometre |
FR2754953B1 (fr) * | 1996-10-21 | 1999-02-26 | Moving Magnet Tech | Moteur polyphase, notamment pour l'entrainement d'une aiguille d'un afficheur |
US6388346B1 (en) * | 1998-10-14 | 2002-05-14 | Air Concepts, Inc. | Axial fluid flow inducing device with multiple magnetically driven impellers |
US6055857A (en) * | 1998-11-10 | 2000-05-02 | Chrysler Corporation | Instrument cluster gauge mounting means |
-
2001
- 2001-10-18 KR KR1020027008436A patent/KR20020067924A/ko not_active Application Discontinuation
- 2001-10-18 WO PCT/JP2001/009170 patent/WO2002037062A1/ja not_active Application Discontinuation
- 2001-10-18 EP EP01976754A patent/EP1335191A4/en not_active Withdrawn
- 2001-10-18 US US10/168,856 patent/US6727622B2/en not_active Expired - Lifetime
- 2001-10-18 CN CNB018033253A patent/CN1229628C/zh not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0488864U (ja) * | 1990-02-21 | 1992-08-03 | ||
JPH08251902A (ja) * | 1995-03-07 | 1996-09-27 | Canon Inc | ステップモータ |
JP2001289876A (ja) * | 2000-01-31 | 2001-10-19 | Nippon Seiki Co Ltd | 可動磁石式計器 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1335191A4 * |
Also Published As
Publication number | Publication date |
---|---|
US20020190594A1 (en) | 2002-12-19 |
CN1229628C (zh) | 2005-11-30 |
CN1394274A (zh) | 2003-01-29 |
KR20020067924A (ko) | 2002-08-24 |
US6727622B2 (en) | 2004-04-27 |
EP1335191A1 (en) | 2003-08-13 |
EP1335191A4 (en) | 2004-12-15 |
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