CA2071681A1 - Apparatus for transmitting electric power and data in motor vehicles - Google Patents
Apparatus for transmitting electric power and data in motor vehiclesInfo
- Publication number
- CA2071681A1 CA2071681A1 CA002071681A CA2071681A CA2071681A1 CA 2071681 A1 CA2071681 A1 CA 2071681A1 CA 002071681 A CA002071681 A CA 002071681A CA 2071681 A CA2071681 A CA 2071681A CA 2071681 A1 CA2071681 A1 CA 2071681A1
- Authority
- CA
- Canada
- Prior art keywords
- conductor strips
- transformer
- steering
- steering wheel
- data
- 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.)
- Abandoned
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 19
- 239000004020 conductor Substances 0.000 claims abstract description 18
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R35/00—Flexible or turnable line connectors, i.e. the rotation angle being limited
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/027—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems between relatively movable parts of the vehicle, e.g. between steering wheel and column
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
- H01F2038/143—Inductive couplings for signals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/18—Rotary transformers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
- Air Bags (AREA)
- Near-Field Transmission Systems (AREA)
- Power Steering Mechanism (AREA)
Abstract
ABSTRACT
In an apparatus for transmitting electric power and data between the vehicle side and the steering wheel side of a motor vehicle, a transformer is used, which com-prises a stationary primary coil on the vehicle side and a secondary coil, which is provided on the steering wheel side and is non-rotatably connected to the steering shaft.
Data are transmitted by a capacitor, which comprises sta-tionary conductor strips which are provided on the vehicle side and surround the steering column and conductor strips which are provided on the steering wheel side and register with the stationary conductor strips and surround and are non-rotatably connected to the steering shaft.
In an apparatus for transmitting electric power and data between the vehicle side and the steering wheel side of a motor vehicle, a transformer is used, which com-prises a stationary primary coil on the vehicle side and a secondary coil, which is provided on the steering wheel side and is non-rotatably connected to the steering shaft.
Data are transmitted by a capacitor, which comprises sta-tionary conductor strips which are provided on the vehicle side and surround the steering column and conductor strips which are provided on the steering wheel side and register with the stationary conductor strips and surround and are non-rotatably connected to the steering shaft.
Description
2~7~
The present invention relates to an apparatus for trans-mitting electric Dower and data between the vehicle side and the steering wheel side of a motor vehicle by means of a bipartite transformer, which is coaxial to the steering shaft and campri~es a stationary shell cDre,which is Provided an the vehicle core and surrnunds the steerinq column and i9 l~-shaoed in section and extends around a primary cnll, and a shell core, which is U-shaped in sec-tion and i9 provided on the steering wheel side and sur-rounds and is non-rotatably connected to the steering shaft and extends around a secondary coil, and an air gap i9 provided between said shell cores.
Electrical means provided on the rotatable part of the steering system of motor vehicles and stationary electric means provided on the vehicle side are generallv connected by a slio ring, which orovides an electrical connection by means of sliding contacts. Pecause such a connection may be disturbed by dust, moisture, corrosion and by vibrations oF the motor vehicle and for this reason i9 not highly reliable, particularly as regards the means for actuating an air ban apparatus for impact Protection, which is integr2ted in the steering wheel and in the in-strument oanel, DE-A-3,041,257 discloses a current-conducting - 2 - 2071~81 connector between relatively rotatable parts of steering systems o~ motor vehicles. That connector consists of a spiral sprinq, which is made af electrically conductive material and accDmmodated in a housing. The housing is binartite and comprises an inner part, which is non-ro-tatably connected to the steering shaft and is provided with a core, which serves to wind up the spiral spring.
The housinq also comprises a stationary outer part. Va-rious madifications of that current-conducting connector are based on the same basic princiDle and have been des-cribed, e.o., in DE-A-3,90B,179, DE-A-3,150,4Z7 and EP-E'-0,195,833.
~ ut said current-conductinq conneCtors do no lnnger comply with the require~ents which in modern motor vehicles are tD be met as regards control and indicatinq elements which are inte~rated in the steerinq wheel and particularly as regards as the air baa apparatuS ~or im-pact protection which is integrated in the steering wheel and the instrument panel.
For this reason a further devolopment has re-sulted in an apparatus for a non-contacting transmission of informatian oenerated by a plurality of control elements provided on the steerinq wheel to an information recoqni-tion system that is Drovided on the vehicle side. 5uch an aDparatus is disclosed in EP-~-0,1~3,5B0. In that case an annular primary coil is orovided on the vehicle side and i9 surrounded by a shell-core, which i9 ll-shaoed in section, and a rotatable annular secondary coil is provided on the steerinq wheel side and i9 surrounded by a shell core which is U-shaped in section. ~oth said coils are coaxial to the steerinq shaft and there is an air qap between the two shell 2~7~8~
cores. To ensure a reliable transmission of the pulses which are generated by a plurality of control elements Drovided in the steerinq wheel, the air gap must not be changed. For this reason, soecial means are requried for maintaining the air gao constant during the angular ~ove-ment of the secondary coil relative to the primary coil.
In view of that priDr art it is an object of the present invention sa to imprnve the aDOaratus des-cribed hereinbefore that a reliable transmission of elec-tric power to the steerina wheel is ensured and that for the per~ormance of indicating and control functions an undisturbed transmis3ion of data from the steering wheel, e.g., to control the horn and the radiD, and to the steer-ing wheel, e.g., to indicate the frequency selected for the radio and for monitoring indications, will be ensured.
That object is accomplished in that a caPacitor is provided, which i5 coaxial to the bipartite transfor~er and cunsists of stationarV conductor strips which are pro-vided on the vehicle side and surround the steering column t and of conductor strips, which are orovided on the steering wheel side and register and define an air gap with said stationary conductor striDs and surround and are non-ro-tatably connected to the 3teerina shaft.
1ectric Dower required in the steerinq wheel i9 inductively transmitted by the cuils whirh are surroun-ded by the shell cores. The primary coil is activated by a pulse, which is generated by a switch, such as a tran-sistor, and ~hich results in a build-up of magnetic enerqy, which when the pulse is terminated is discharged in~o the secondary coil and in the latter oenerates a current, which is conducted to the caoacitor and to the consumer. On the 2~7~8~
steering wheel side the electric power is cDnverted by a rectifier circuit to a d.c. voltage and is controlled by the electranic circuitry provioed on the steering wheel side. The level of the oower which i9 transmitted will depend on the ratio of the 0N time to the OFF time of the switch. During a controlled aperation only that power will be transmitted which is required on the steering wheel side. For that control, different pulse widths are selected ln alternation.
Data are transmitted from the steerinq wheel ~ide to the vehicle side and from the vehicle side to the steering wheel side via thecaoacitor, which is independent of the inductive transmission Df power. On the vehicle side and on the steering wheel side the capacitar is cnn-nected to identical activatinq and evaluating circuits be-cuase data are transmitted in both directions~
~ o minimize interferino magnetic fields and to ensure a high efficiency, the air nao between the shell cores has preferably a width of 0.3 mm to 1 mm.
~ ecause the air gap of the capacitor i9 renuired to h~ve a width of 0.2 to 0.5 mm, the capacity of the ca-DaCitOr i9 relatively low so that special means the re-quired to activate the caDacitor so as to avoid an inter-ference by electromaqnetic fields.
In addition, the transmission of data is syn-chrnnized with the frequency of the transformer in order to avoid an interference by electromagnetic fields.
Accordinn to a orefe~red embodiment of the in-vent~on the caoacitor consists of four conductinq con-ductor strips, which are arranoed in two Dairs of register-ino strios.
2~71681 A preferred ~eature of the capacitor re~ides in that the conductor strips cansist of concentric cylin-drical slee~es, which desirably surround the trznsformer.
The conductor strips may alternatively consist of coaxial annular disks arranged in a row.
The capacitor composed of sleeves suitably sur-rounds the transformer.
The shell cores preferably consist of ferrite cores, which have a high initial permeability to prevent an emergence of Magnetic fieldq from the core in case of a relatively high saturation. ~esides, ferrite cores hsve a very high electric resistance and low magnetic losses.
To pEvent an emergence of interfering fields to the outside, the transformer and the capacitar are preferably provided with shielding means, preferably of sheet s~eel.
The data which are generated in the steer~ng wheels oy corresponding momentary-contact switches are transmitted to the vehicle side, where they serve to cDn-trol the car radio ando the tachometer. The momentary-con-tact switches provided on the vehicle side are used to control indicating li~hts provided in the steering wheel to indicate certain operating conditions, such as oil le-vel, orivino light, etc. ~esides, the data of the car radio can be transmitted to the steering wheel for a display of the frequency and other radio data.
The voltage for the control and for the indica-tions must be buffered by means of a capacitor because the elec~rical energy is transmitted only by pulses. When the switch is on, the power must be transmitted by the capacitor.
~7~&~i~
The power required for the air bag apparatus for impact protection iB stored in that the voltage transmitted by the transformer is stored in a separate capacitor or in a storage battery and i9 used to ignite the gas genera~or in response to a signal transmitted by the capacitor in case of an accident.
The invention is illustrated by way of example in the drawlngs and will be explained more in detail here-inafter.
Figure 1 is a longitudinal sectional view showing a steering shaft, tD which that capacitor half and that transformer half which are provided on the steering wheel side are non-rotatably connected, and also showing that transformer half and that capacitor half which are provided on the vehicle side and are fixed to the fra~e of the ve-hicle.
The mounting flano;e 1 provided on the vehicle side is coaxially connected by the screw Z to the housing 4, which is U-shaped in section and fixed to the frame and surrounds the steering shaft 3 and is open toward the steering wehel. The cavity of the housing 4 contains an annular primary coil 6, which is surrounded by ~he shell core 5, which consists of ferrite. On the vehicle side a housing 7 is provided, which is U-shaped in section and is open on the vehicle side and is coaxial and non-rntatably connected tD the steering shaft 3 and contains an inserted annular secandary coil 9, which is surrounded by a shell core a. ~he radial outer legs 1D and 11 of the housings 4 and 7 on the vehicle side and on the steering wheel side, respectively, are axially extanded and overlap in the for~
of two concentric sleeves. Two closely spaced apart re-20716g~
g~stering and clnsely snaced apart pairs of conductorstriDs 12, 12' and 13, 13' are attached ta the inside sur-face of the leg 10 oF the housing 4 on the vehicle side and to the outside surface of the leq 11 of the housing 7 on the steerino wheel side.
Figure ~ shows a capacitor 14, which i5 COmODqed of two pairs of registering and clasely spaced apart an-nular disks 15, 15' an~ 16, 16', which serve as conductor strips. The two annular disks 15, 16' are non-rotatably connected to the steering shaft, not shown, and the two annular disks 15', 16 are provided on the vehicle side and f1xed to the frame. The two halves of the transfor~er, not shown, may be arranged under the capacitor in the region which is defined by the broken line.
The advantaqes afforded by the invention reside particularly in a reliable and undisturbed trans~ission of puwer and data and in a transmi sion of complex data in-formation withaut noise and wear.
The present invention relates to an apparatus for trans-mitting electric Dower and data between the vehicle side and the steering wheel side of a motor vehicle by means of a bipartite transformer, which is coaxial to the steering shaft and campri~es a stationary shell cDre,which is Provided an the vehicle core and surrnunds the steerinq column and i9 l~-shaoed in section and extends around a primary cnll, and a shell core, which is U-shaped in sec-tion and i9 provided on the steering wheel side and sur-rounds and is non-rotatably connected to the steering shaft and extends around a secondary coil, and an air gap i9 provided between said shell cores.
Electrical means provided on the rotatable part of the steering system of motor vehicles and stationary electric means provided on the vehicle side are generallv connected by a slio ring, which orovides an electrical connection by means of sliding contacts. Pecause such a connection may be disturbed by dust, moisture, corrosion and by vibrations oF the motor vehicle and for this reason i9 not highly reliable, particularly as regards the means for actuating an air ban apparatus for impact Protection, which is integr2ted in the steering wheel and in the in-strument oanel, DE-A-3,041,257 discloses a current-conducting - 2 - 2071~81 connector between relatively rotatable parts of steering systems o~ motor vehicles. That connector consists of a spiral sprinq, which is made af electrically conductive material and accDmmodated in a housing. The housing is binartite and comprises an inner part, which is non-ro-tatably connected to the steering shaft and is provided with a core, which serves to wind up the spiral spring.
The housinq also comprises a stationary outer part. Va-rious madifications of that current-conducting connector are based on the same basic princiDle and have been des-cribed, e.o., in DE-A-3,90B,179, DE-A-3,150,4Z7 and EP-E'-0,195,833.
~ ut said current-conductinq conneCtors do no lnnger comply with the require~ents which in modern motor vehicles are tD be met as regards control and indicatinq elements which are inte~rated in the steerinq wheel and particularly as regards as the air baa apparatuS ~or im-pact protection which is integrated in the steering wheel and the instrument panel.
For this reason a further devolopment has re-sulted in an apparatus for a non-contacting transmission of informatian oenerated by a plurality of control elements provided on the steerinq wheel to an information recoqni-tion system that is Drovided on the vehicle side. 5uch an aDparatus is disclosed in EP-~-0,1~3,5B0. In that case an annular primary coil is orovided on the vehicle side and i9 surrounded by a shell-core, which i9 ll-shaoed in section, and a rotatable annular secondary coil is provided on the steerinq wheel side and i9 surrounded by a shell core which is U-shaped in section. ~oth said coils are coaxial to the steerinq shaft and there is an air qap between the two shell 2~7~8~
cores. To ensure a reliable transmission of the pulses which are generated by a plurality of control elements Drovided in the steerinq wheel, the air gap must not be changed. For this reason, soecial means are requried for maintaining the air gao constant during the angular ~ove-ment of the secondary coil relative to the primary coil.
In view of that priDr art it is an object of the present invention sa to imprnve the aDOaratus des-cribed hereinbefore that a reliable transmission of elec-tric power to the steerina wheel is ensured and that for the per~ormance of indicating and control functions an undisturbed transmis3ion of data from the steering wheel, e.g., to control the horn and the radiD, and to the steer-ing wheel, e.g., to indicate the frequency selected for the radio and for monitoring indications, will be ensured.
That object is accomplished in that a caPacitor is provided, which i5 coaxial to the bipartite transfor~er and cunsists of stationarV conductor strips which are pro-vided on the vehicle side and surround the steering column t and of conductor strips, which are orovided on the steering wheel side and register and define an air gap with said stationary conductor striDs and surround and are non-ro-tatably connected to the 3teerina shaft.
1ectric Dower required in the steerinq wheel i9 inductively transmitted by the cuils whirh are surroun-ded by the shell cores. The primary coil is activated by a pulse, which is generated by a switch, such as a tran-sistor, and ~hich results in a build-up of magnetic enerqy, which when the pulse is terminated is discharged in~o the secondary coil and in the latter oenerates a current, which is conducted to the caoacitor and to the consumer. On the 2~7~8~
steering wheel side the electric power is cDnverted by a rectifier circuit to a d.c. voltage and is controlled by the electranic circuitry provioed on the steering wheel side. The level of the oower which i9 transmitted will depend on the ratio of the 0N time to the OFF time of the switch. During a controlled aperation only that power will be transmitted which is required on the steering wheel side. For that control, different pulse widths are selected ln alternation.
Data are transmitted from the steerinq wheel ~ide to the vehicle side and from the vehicle side to the steering wheel side via thecaoacitor, which is independent of the inductive transmission Df power. On the vehicle side and on the steering wheel side the capacitar is cnn-nected to identical activatinq and evaluating circuits be-cuase data are transmitted in both directions~
~ o minimize interferino magnetic fields and to ensure a high efficiency, the air nao between the shell cores has preferably a width of 0.3 mm to 1 mm.
~ ecause the air gap of the capacitor i9 renuired to h~ve a width of 0.2 to 0.5 mm, the capacity of the ca-DaCitOr i9 relatively low so that special means the re-quired to activate the caDacitor so as to avoid an inter-ference by electromaqnetic fields.
In addition, the transmission of data is syn-chrnnized with the frequency of the transformer in order to avoid an interference by electromagnetic fields.
Accordinn to a orefe~red embodiment of the in-vent~on the caoacitor consists of four conductinq con-ductor strips, which are arranoed in two Dairs of register-ino strios.
2~71681 A preferred ~eature of the capacitor re~ides in that the conductor strips cansist of concentric cylin-drical slee~es, which desirably surround the trznsformer.
The conductor strips may alternatively consist of coaxial annular disks arranged in a row.
The capacitor composed of sleeves suitably sur-rounds the transformer.
The shell cores preferably consist of ferrite cores, which have a high initial permeability to prevent an emergence of Magnetic fieldq from the core in case of a relatively high saturation. ~esides, ferrite cores hsve a very high electric resistance and low magnetic losses.
To pEvent an emergence of interfering fields to the outside, the transformer and the capacitar are preferably provided with shielding means, preferably of sheet s~eel.
The data which are generated in the steer~ng wheels oy corresponding momentary-contact switches are transmitted to the vehicle side, where they serve to cDn-trol the car radio ando the tachometer. The momentary-con-tact switches provided on the vehicle side are used to control indicating li~hts provided in the steering wheel to indicate certain operating conditions, such as oil le-vel, orivino light, etc. ~esides, the data of the car radio can be transmitted to the steering wheel for a display of the frequency and other radio data.
The voltage for the control and for the indica-tions must be buffered by means of a capacitor because the elec~rical energy is transmitted only by pulses. When the switch is on, the power must be transmitted by the capacitor.
~7~&~i~
The power required for the air bag apparatus for impact protection iB stored in that the voltage transmitted by the transformer is stored in a separate capacitor or in a storage battery and i9 used to ignite the gas genera~or in response to a signal transmitted by the capacitor in case of an accident.
The invention is illustrated by way of example in the drawlngs and will be explained more in detail here-inafter.
Figure 1 is a longitudinal sectional view showing a steering shaft, tD which that capacitor half and that transformer half which are provided on the steering wheel side are non-rotatably connected, and also showing that transformer half and that capacitor half which are provided on the vehicle side and are fixed to the fra~e of the ve-hicle.
The mounting flano;e 1 provided on the vehicle side is coaxially connected by the screw Z to the housing 4, which is U-shaped in section and fixed to the frame and surrounds the steering shaft 3 and is open toward the steering wehel. The cavity of the housing 4 contains an annular primary coil 6, which is surrounded by ~he shell core 5, which consists of ferrite. On the vehicle side a housing 7 is provided, which is U-shaped in section and is open on the vehicle side and is coaxial and non-rntatably connected tD the steering shaft 3 and contains an inserted annular secandary coil 9, which is surrounded by a shell core a. ~he radial outer legs 1D and 11 of the housings 4 and 7 on the vehicle side and on the steering wheel side, respectively, are axially extanded and overlap in the for~
of two concentric sleeves. Two closely spaced apart re-20716g~
g~stering and clnsely snaced apart pairs of conductorstriDs 12, 12' and 13, 13' are attached ta the inside sur-face of the leg 10 oF the housing 4 on the vehicle side and to the outside surface of the leq 11 of the housing 7 on the steerino wheel side.
Figure ~ shows a capacitor 14, which i5 COmODqed of two pairs of registering and clasely spaced apart an-nular disks 15, 15' an~ 16, 16', which serve as conductor strips. The two annular disks 15, 16' are non-rotatably connected to the steering shaft, not shown, and the two annular disks 15', 16 are provided on the vehicle side and f1xed to the frame. The two halves of the transfor~er, not shown, may be arranged under the capacitor in the region which is defined by the broken line.
The advantaqes afforded by the invention reside particularly in a reliable and undisturbed trans~ission of puwer and data and in a transmi sion of complex data in-formation withaut noise and wear.
Claims (11)
1. An apparatus for transmitting electric power and data between the vehicle side and the steering wheel side of a motor vehicle by means of a bipartite trans-former, which is coaxial to the steering shaft and com-prises a stationary shell core, which is provided on the vehicle core and surrounds the steering column and is U-shaped in section and extends around a primary coil, and a shell core, which is U-shaped in section and is provided on the steering wheel side and surrounds and is non-rotatab-ly connected to the steering shaft and extends around a secondary coil, and an air gap is provided between said shell cores, characterized in that a capacitor is provided, which is coaxial to the bipartite transformer and consists of stationary conductor strips (12, 13, 15, 16), which are provided on the vehicle side and surround the steering co-lumn, and of conductor strips (12', 13', 15', 15'), which are provided on the steering wheel side and register and define an air gap with said stationary conductor strips and surround and are non-rotatably connected to the steer-ing shaft (3).
2. An apparatus according to claim 1, characte-rized in that the air gap between the shell cores (5, 6) of the capacitors has a width of 0.3 to 1 mm and the air gap between the conductor strips (12, 12', 13, 13', 15, 15', 16, 16') of the capacitors has a width of 0.2 to 0.5mm.
3. An apparatus according to claim 1, characterized in that the conductor strips (12, 12', 13, 13') consist of concentrically arranged cylindrical sleeves.
4. An apparatus according to claim 1, characterized in that the conductor strips (15, 15', 16, 16') consist of annular disks arranged in a row.
5. An apparatus according to claim 1, 2, 3 or 4, characterized in that the capacitor consists of at least four conductor strips (12, 12', 13, 13', 15, 15', 16, 16') which are arranged in pairs of registering strips.
6. An apparatus according to claim 1, 2, 3 or 4, characterized in that the capacitor consists of sleeves and surrounds the transformer.
7. An apparatus according to claim 1, 2, 3 or 4, characterized in that the shell cores consists of ferrite.
8. An apparatus according to claim 1, 2, 3 or 4, characterized in that the transformer and the capaci-tor are provided with shielding means.
9. An apparatus according to claim 1, 2, 3 or 4, characterized in that data are transmitted in synchronism with the frequency of the transformer.
10. An apparatus according to claim 1, 2, 3 or 4, characterized in that the transformer is adapted to be pulsed.
11. An apparatus according to claim 8, wherein said shielding means are made of steel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4120650A DE4120650A1 (en) | 1991-06-22 | 1991-06-22 | DEVICE FOR TRANSMITTING ELECTRICAL ENERGY AND DATA IN MOTOR VEHICLES |
| DEP4120650.9 | 1991-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2071681A1 true CA2071681A1 (en) | 1992-12-23 |
Family
ID=6434525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002071681A Abandoned CA2071681A1 (en) | 1991-06-22 | 1992-06-19 | Apparatus for transmitting electric power and data in motor vehicles |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5498911A (en) |
| EP (1) | EP0520535B1 (en) |
| JP (1) | JP2956866B2 (en) |
| KR (1) | KR930001524A (en) |
| BR (1) | BR9202356A (en) |
| CA (1) | CA2071681A1 (en) |
| DE (2) | DE4120650A1 (en) |
| ES (1) | ES2077340T3 (en) |
| MX (1) | MX9203031A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7135981B1 (en) | 2004-10-12 | 2006-11-14 | Teleflex Megatech Inc. | Fuel level variation detector for marine vehicle |
| US7405540B2 (en) | 2003-10-20 | 2008-07-29 | Teleflex Megatech, Inc. | Secondary power supply system and method of activating subsystems from a vehicle steering wheel |
| US7525449B1 (en) | 2003-10-20 | 2009-04-28 | Teleflex Megatech, Inc. | Status light for switch on boat steering wheel |
| US7672759B1 (en) | 2004-02-24 | 2010-03-02 | Teleflex Megatech, Inc. | Communication with a steering wheel switch |
| EP2201584B1 (en) | 2007-09-10 | 2017-07-26 | SEW-EURODRIVE GmbH & Co. KG | Coupling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59304677D1 (en) * | 1993-03-24 | 1997-01-16 | Siemens Ag | Device and method for wireless data and energy transmission |
| DE4404816B4 (en) * | 1994-02-16 | 2005-08-25 | Siemens Restraint Systems Gmbh | Device for transmitting energy and data between the vehicle and the steering wheel side of motor vehicles |
| US5636863A (en) * | 1994-04-26 | 1997-06-10 | Eaton Corporation | Vehicle steering column control system |
| US6012736A (en) * | 1994-04-26 | 2000-01-11 | Eaton Corporation | Vehicle steering column control system |
| US5906392A (en) * | 1994-04-26 | 1999-05-25 | Eaton Corporation | Vehicle steering column control system |
| DE19520063C2 (en) * | 1995-06-06 | 1998-07-09 | Petri Ag | Optical energy and information transmission for steering wheels |
| DE19528693B4 (en) * | 1995-08-04 | 2006-07-06 | Marquardt Gmbh | Steering wheel for a motor vehicle |
| DE19529528A1 (en) * | 1995-08-11 | 1997-02-13 | Bosch Gmbh Robert | Arrangement for the contactless transmission of signals between a fixed and a rotatably mounted vehicle part |
| DE19530589A1 (en) * | 1995-08-19 | 1997-02-20 | Bosch Gmbh Robert | Arrangement for the contactless transmission of an airbag deployment signal |
| DE19532043C2 (en) * | 1995-08-31 | 2002-10-24 | Marquardt Gmbh | Steering wheel for a motor vehicle |
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- 1991-06-22 DE DE4120650A patent/DE4120650A1/en not_active Withdrawn
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- 1992-06-04 DE DE59203194T patent/DE59203194D1/en not_active Expired - Fee Related
- 1992-06-04 ES ES92201602T patent/ES2077340T3/en not_active Expired - Lifetime
- 1992-06-04 EP EP92201602A patent/EP0520535B1/en not_active Expired - Lifetime
- 1992-06-19 CA CA002071681A patent/CA2071681A1/en not_active Abandoned
- 1992-06-19 KR KR1019920010718A patent/KR930001524A/en not_active Application Discontinuation
- 1992-06-19 MX MX9203031A patent/MX9203031A/en not_active IP Right Cessation
- 1992-06-19 JP JP4185962A patent/JP2956866B2/en not_active Expired - Lifetime
- 1992-06-22 BR BR929202356A patent/BR9202356A/en not_active IP Right Cessation
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1994
- 1994-12-13 US US08/355,422 patent/US5498911A/en not_active Expired - Fee Related
Cited By (6)
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|---|---|---|---|---|
| US7405540B2 (en) | 2003-10-20 | 2008-07-29 | Teleflex Megatech, Inc. | Secondary power supply system and method of activating subsystems from a vehicle steering wheel |
| US7525449B1 (en) | 2003-10-20 | 2009-04-28 | Teleflex Megatech, Inc. | Status light for switch on boat steering wheel |
| US7672759B1 (en) | 2004-02-24 | 2010-03-02 | Teleflex Megatech, Inc. | Communication with a steering wheel switch |
| US7135981B1 (en) | 2004-10-12 | 2006-11-14 | Teleflex Megatech Inc. | Fuel level variation detector for marine vehicle |
| EP2201584B1 (en) | 2007-09-10 | 2017-07-26 | SEW-EURODRIVE GmbH & Co. KG | Coupling device |
| EP2201584B2 (en) † | 2007-09-10 | 2020-07-22 | SEW-EURODRIVE GmbH & Co. KG | Coupling device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0520535B1 (en) | 1995-08-09 |
| KR930001524A (en) | 1993-01-16 |
| EP0520535A1 (en) | 1992-12-30 |
| DE59203194D1 (en) | 1995-09-14 |
| JP2956866B2 (en) | 1999-10-04 |
| JPH05201337A (en) | 1993-08-10 |
| BR9202356A (en) | 1993-03-30 |
| ES2077340T3 (en) | 1995-11-16 |
| DE4120650A1 (en) | 1992-12-24 |
| US5498911A (en) | 1996-03-12 |
| MX9203031A (en) | 1993-07-01 |
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| Date | Code | Title | Description |
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| FZDE | Dead |