Source: https://patents.google.com/patent/WO2008147279A1/en
Timestamp: 2019-01-16 17:14:11
Document Index: 611037054

Matched Legal Cases: ['art 1', 'art 2', 'art 5', 'arts 7', 'art 2', 'arts 7', 'arts 7', 'art 10', 'arts 11', 'art 7', 'arts 7', 'art 2', 'arts 33', 'art 31', 'art 31', 'arts 7', 'art 31', 'arts 49', 'art 31', 'arts 52', 'arts 50', 'arts 46', 'art 7', 'arts 50', 'arts 63', 'art 4', 'arts 7', 'arts 42', 'arts 50', 'arts 49', 'arts 49']

WO2008147279A1 - Cordless electrical connection with simple key - Google Patents
Cordless electrical connection with simple key Download PDF
WO2008147279A1
WO2008147279A1 PCT/SE2008/000334 SE2008000334W WO2008147279A1 WO 2008147279 A1 WO2008147279 A1 WO 2008147279A1 SE 2008000334 W SE2008000334 W SE 2008000334W WO 2008147279 A1 WO2008147279 A1 WO 2008147279A1
PCT/SE2008/000334
Olsson Joergen
The docking unit contains multiple spring pins, of which one is pushed in when the key reaches the front of the docking unit. Transmission of current between the docking unit and the key is effected in the primary case only when this pin is pushed in far enough. Since multiple pins are arranged adjacent to each other in a pattern, only low precision is required when the key is advanced towards the front of the docking unit. The front of the key is equipped with suitable steering, for example shaped as a steering ball, designed to simplify inserting the key into a canal containing a pin of the docking matrix. The key may, with proper design, also function as sealing against water after docking.
- Fig. 1 is a schematic cross-sectional view of a row of a pin matrix in a docking unit,
- Fig. 2 is a schematic cross-sectional view of a column of a pin matrix in a docking unit,
- Fig. 3 is a schematic cross-sectional view of a key to be used for energy withdrawal from a docking unit,
- Fig. 4 is a front view of a pin matrix,
- Fig. 5 depicts a car parked in front of a docking unit,
- Fig. 6 depicts a car in process of connecting to a docking unit,
- Fig. 7 depicts a car connected to a docking unit,
- Fig. 8 is a view from behind of a pin modified for transmission of three-phase current,
- Fig. 9 is a top view of the pin of fig. 8,
- Fig. 10 is a side view of the pin of fig. 8,
- Fig. 11 is a front view of upper and lower power rails modified for connection to three-phase voltage, and
- Fig. 12 is a cross-sectional view of the upper and lower power rails of fig. 11. -Fig. 13 illustrates another example of the matrix.
-Fig. 14 is a view showing the matrix in fig. 13 connected to the key located to a telescope.
- Fig. 15 is a view of a pin fitting the matrix in fig. 13.
-Fig. 16 is a view of a telescope with a key fitting the matrix in fig. 13.
DETAILED DESCRIPTION A method and devices for cordless electrical connection of an object will now be described. The description will be conducted in reference to a vehicle, a passenger vehicle in particular, but the electrical connection can be used in all mobile or moving objects which require or may require transference of electricity. The electrical connection is primarily intended for transmission of electrical energy and may particularly be used for connecting the object to a high voltage. By high voltage we mean for instance the voltage of the public electric power net, or a voltage large enough to be harmful to people, in general larger than say 100 V. The electrical connection may also be used for other cases of transference of electricity, such as . signal transfer or connection to a low voltage.
In the case where the electrical connection is used for cordless connection of a vehicle to a high tension electrical power net, as shown in fig. 5 - 7, a first part 1 of the connection, herein referred to as the docking unit, may be mounted at one end of a parking space and oriented perpendicularly to the longitudinal direction of the parking space, while a second part 2 of the connection, herein referred to as the telescopic part, is mounted at the front of the vehicle 3. As the vehicle is parked an arm 4 is ejected horizontally from the telescopic part. The anterior part of the arm constitutes or carries a contact part 5, see also fig. 3, herein referred to as the key. The arm is ejected adequately for the key to be pushed in far enough into the docking unit 1, which has a vertical receiving surface made up by the anterior surfaces of elastically suspended, horizontally mobile pins 6 and interjacent fixed frame parts 7 of the docking unit, see fig. 4. Before the arm 4 is ejected towards the docking unit 1 it may be confirmed or verified, if this is required, that the vehicle is actually able to, or has the right to, connect to the docking unit in question. This may be done by a communication where a wireless unique signal is sent from a unit 8 on the vehicle 3 and received and answered by a unit 9, placed inside, close to or in the vicinity of the docking unit 1. A received affirmative signal may directly activate ejection of the arm 4 from the telescopic part 2 without any additional command or input. The spring pins 6 of the docking unit 1 thus form a pin matrix as shown in fig. 4, i.e. a for instance regular pattern made up by pins and interjacent frame parts 7. Every spring pin is completely surrounded by frame parts and governed in a way such that it can not become in mechanical or electrical contact with any of the other spring pins. The intermediate frame parts 7 and an outer surrounding frame part 10 are all made of electrically isolating material, as are the anterior parts 11 of the spring pins 6, which free surfaces are visible in fig. 4, see also fig. 1 and 2. As the key 5 reaches the vertical, towards the vehicle directed, surface of the docking unit 1, the anterior end of the key will hit the anterior surface of a spring pin and/or a frame part 7, 10. The free surfaces of the frame parts are advisably executed in a way such that, at contact, they will guide the key towards a spring pin 6, for example by having the shape of steering ridges 12. For instance, the anterior part of the interjacent frame parts 7 can be given the shape of a pyramid, and in particular may then the interjacent parts of the inner frame parts form a regular pyramid, see fig. 1 and 2. If a steering ridge 12 is hit by the key 5 the key will then be guided to the electrically isolating anterior parts of a spring pin 6'. This pin will then be pushed inwards between the adjacent frame parts by the telescopic part 2, which is working against a spring force. The key 5 is pushed in further until a certain counter force is obtained, at or after which the telescopic part is notified that the pin 6' is pushed in far enough by signal exchange between electrically conducting surfaces of the pin 61 and the key.
The spring pins 6 have main parts 33, see fig. 2, made of electrically isolating material. The main parts have the shape of elongated, uniform rods with rectangular cross-section. Inside them are deep longitudinal, axial cavities or dead end holes 34, with constant and uniform cross- section along its entire length, starting from the rear surfaces of the pins. Inside these dead end holes or canals compression springs 35 are mounted, that acts on the bottom of the dead end holes and on the free end of spring supports 36, which are part of the fixed main part 31 of the docking unit 1. The spring supports have the shape of uniform pegs and are placed along the longitudinal axis of the canals 32 of the docking unit. The spring supports 36 run in the inner canals 34 of the spring pins and may have essentially the same cross-section as these. The spring supports are connected at their inner end to for instance horizontally arranged thinner partition walls 37, which are attached to a rear inner wall of the main part 31 of the docking unit. In the same way the intermediate frame parts 7 are attached to partition walls 38. In this way horizontal cavities 39 are created, at the bottom of the canals 32, that run along the above described rear inner wall of the main part 31 of the docking unit.
In the uninfluenced state of the spring pins the surface of the transition area 44 bear against corresponding surfaces of transition areas 45 of the walls of the canals 32. These transition areas 5 may in a corresponding way have a plane surface, be vertical in the example, and at an angle of 45° to the surfaces of the walls of the canals, which bear against the electrically conducting side plates 42. In this way the transition areas 44, 45 make up a stopper to the spring pins 6 when acted upon by the compression springs 35.
Several electrically conducting surfaces bear against the side plates in the uninfluenced
10 state of the spring pins. At some distance from the open end of the canals 32 are two opposite contact surfaces 46 for signal transfer and control of earth. Further into the canals are at each side of the transmission areas 45 pairs of opposite contact surfaces 47 and 48. In these last pairs, surfaces that are along the same side inside the canals are electrically connected to each other by cables 49. All these different contact surfaces are surfaces of prestressed spring contact parts 49,
15 50 and 51. Out of these contact parts, the ones which have surfaces that are electrically connected to each other can be prestressed by using a common flat spring 52. This will then be applied at a section of the main part 31, behind the opposite transition area 45, and may also constitute the electrical connection 49. The contact parts may be designed as contact cylinders, which obtain their spring prestressing by being compelled into rectangular, elongated recesses in 0 resilient thin sheet-metal contact parts 52, 53, such that the width of the recesses is less than the axial diameter of the contact cylinders. Furthermore, the contact parts may be placed in elongated spaces 54, 55 and 56, which extend across all the canals 32 at a direction perpendicular to the canals. In the example the elongated spaces are oriented horizontally. The elongated spaces 54, 55 and 56 are parallel to the rear elongated spaces 39 described above. 5 In each of the rear elongated spaces 39 runs a contact rail 61 used for transmission of high tension, also named connection rail or power rail. The contact rail is rotatable around a longitudinal axis 62. Resilient, electrically isolating tongues 63, see especially figure 1, are attached to the rail opposite each adjacent canal 32.
The function of the device will now be described in closer detail. When a spring pin 6' is0 pushed into a canal 32 by the compressive force of the key 5, the electric connection to earth is broken. When the key is fully inserted, the anterior contact parts of the canal 32 are instead in electric connection with the contact surfaces 25, for signal transfer and to control that the vehicle or object is connected to electrical earth, and the contact parts 50 further inside the canal are in electric connection with the anterior contact surfaces 23 for transmission of current and energy to the key. Signal exchange may be carried out using the electrically conducting surfaces 46 of the canal, which are designed for this purpose, and corresponding surfaces 25 of the key.
When the docking unit has obtained the go-ahead a control current, checking for earth, is placed over the anterior contact parts 46. The control current passes over that row of the matrix in which a pin (6') has been pushed in by the key 5. All the spring pins 6 which are unaffected lead the control current through their electrically conducting surfaces 46. When the pin 6' is pushed in far enough the control current will pass through the conducting surfaces 25 of the key for signal exchange and earth control. For this to be possible each of the anterior contact parts , 49, with their respective contact surfaces, is divided into two electrically separated parts, see ' particularly fig. 1. These isolated parts, which are part of anterior contact parts on each side of an interjacent frame part 7 of a column, are electrically connected, for instance by being part of the same contact cylinder, as shown in fig. 1. In this way the control current can flow through this row of the matrix. The trigger unit of the docking unit, not shown in figure, checks the flow continuously. If the control current is unable to pass the trigger unit will determine that no connection to high tension is allowed. Furthermore, through the same contact surfaces the key 5 can be connected to protective earth. When the control current flows, a switch, not shown in figure, can be activated to connect high tension to the two power rails 61 in that row of the matrix which contains the pushed in pin 6'. Which row having been determined for instance in the preceding signal exchange. The power rails connects electrical phase and zero potential to the electrically conducting side plates 42 of the pin 6'. Current will then flow between the rails 61 and the vehicle 3 through the side plates, the inner contact parts 50, 51, their internal connections 49, 52 and the anterior conducting plates 23 of the key 5. All the other pins that are in the same row as 6' are electrically isolated from the high tension by the isolating parts 63 of the power rails 61. The isolating parts are put in place by a revolving movement as the power rails reach the rear ends of the side plates 42. When the key 5 is inserted into a canal 32 the seal can tighten against the walls of the canal. The seal can be designed to expand inside the canal at pressure from the telescopic part 4, thereby protecting the electrically conducting transmission surfaces from water and humidity. The seal can constitute a ring made of rubber, or some similar material, placed in a circumferential groove at the rear end of the key. The key may be divided into two parts with the groove at the partition surface. The key 5 is pushed into the canal 32 by the telescopic part until a certain pressure is obtained, at which a pressure switch, not shown in figure, connected to the telescopic part will stop the forward movement. The two parts of the two-piece key are pushed closer together, with the seal in between, at which the slot is reduced (in width and/or depth) and the seal thus pushed outwards.
Alternatively, the seal of the key can be brought about by designing the key with a thicker, conical rear end, not shown in figure, so that it will tighten against the oblique surfaces of the frame parts 7, 10, surrounding the open end of the canal 32 when the key is fully inserted into the canal. The system could also be used together with a debit system with remote control via
Internet, SMS or telephone calls. After receiving a signal from the vehicle, possible via the docking unit, the debit system could send a signal by radio or by the electric power net, affirming that energy withdrawal is allowed.
The spring pins can be design with conducting side plates on all side surfaces for transmission of three-phase current. The arrangement for connection to high tension will then be different. On a modified spring pin 6" each of the contact plates is divided into two electrically isolated parts 42', see fig. 8 - 10. The anterior part of one of these conducting parts covers most of the side surface of the spring pin to be able to effect the transmission between the anterior contact surfaces 46 of the canal 32 into which the pin is inserted. At the forward-facing surface of each contact rail 61' are conducting surfaces electrically isolated from each other, see fig. 11, for connection to zero potential "0" and phase potential Fl, F2 and F3, respectively. To achieve this, the contact rail may contain an electrically isolating middle section, at the forward-facing surface on which the conducting surfaces are placed, which are connected by lead-ins gf to the conductive surfaces in the back of the rails, see fig. 12. Inside the canals, each of the rear or inner contact surfaces 47, 49 and corresponding contact parts 50, 51 is divided into two electrically isolated parts, not shown in figure, similarly to the anterior contact surfaces 46 and the contact parts 49, but without the two-and-two electrical connection. The resilient thin sheet-metal parts 49 are also divided into two electrically isolated parts. The forward, conducting surfaces 23 of the key 5 are in the same way divided into two electrically isolated parts, not shown.
Another embodiment of the invention will now be described. The matrix may be arranged as in figure 13, where the pins A 13 are controlled by an inelastic band Al 5, having its ends applied to a spring A 16 via an electronics unit Al 8 and a hook A22. The band Al 5 thus 5 extends transverse all of the pins Al 3 when they are in an unactivated state. When the vehicle is about to insert the key A 17 in to the matrix according to figure 13, via the telescopic part A l l, a wireless ID signal is sent to the electronics unit A 18. At correct ID, an electronic lock will release the hook A 22 in connection A 19 to the band and the spring A 16, making it possible to a pin A 13 to be pushed in, see figure 14. Then the band Al 5 will extend along a curved surface
10 of the pushed-in pin Al 3, said curved surface of the pin Al 3 being visible in figure 15. Once a pin A 13 has been pushed in, all band portions A 15 of the remaining rows are locked by the electronic lock, so that no other pins A 13 in either row can be pushed in. The length of the band Al 5 will allow for only one of the pins A 13 to be pushed in at the time. The band Al 5 will act as a spring for the pushed-in pin Al 3. When the key is removed the band Al 5 will return the
15 pushed-in pin Al 3 to its unactivated position. Thus, the band Al 5 replaces all the springs of the individual canals in the embodiment described above.
20 The two examples described above illustrates two out of many ways to control the spring pins and some different ways to arrange contact parts for transmission of high current, but the main theme of the invention remains the same, i.e. that the demand for precision when parking a vehicle is substantially reduced when the docking unit is designed in accordance with the invention, i.e. with a matrix or a pattern of steering parts A 14 and connection points/pins A
3. The cordless electrical connection according to claim 2, characterized by the intermediate parts, at their free front surfaces, comprising guiding surfaces, particularly in the, shape of ridges or the like, for example in pyramidal or sub-pyramidal shape, in the purpose of guiding the key towards an adjacent pin.
6. The cordless electrical connection according to claim 1 , characterized by the key, at its forward end, having a seal which tightens between the key and a canal of the pin to which the key is connected and thereby protects the connection against water and humidity, particularly the seal tightens inside or against walls of the canal or surfaces near the open end of the canal.
PCT/SE2008/000334 2007-05-25 2008-05-15 Cordless electrical connection with simple key WO2008147279A1 (en)
SE0701337A SE531179C2 (en) 2007-05-25 2007-05-25 Cordless electrical connection with simple key
SE0701337-8 2007-05-25
JP2010509300A JP2010528418A (en) 2007-05-25 2008-05-15 Cordless electrical connection device equipped with a simple key
US12600294 US8038478B2 (en) 2007-05-25 2008-05-15 Cordless electrical connection with simple key
EP20080753954 EP2151020A4 (en) 2007-05-25 2008-05-15 Cordless electrical connection with simple key
CA 2687568 CA2687568A1 (en) 2007-05-25 2008-05-15 Cordless electrical connection with simple key
WO2008147279A1 true true WO2008147279A1 (en) 2008-12-04
ID=40075351
PCT/SE2008/000334 WO2008147279A1 (en) 2007-05-25 2008-05-15 Cordless electrical connection with simple key
US (1) US8038478B2 (en)
EP (1) EP2151020A4 (en)
JP (1) JP2010528418A (en)
CA (1) CA2687568A1 (en)
WO (1) WO2008147279A1 (en)
DE102013225196A1 (en) 2013-12-06 2015-06-11 Robert Bosch Gmbh Device for operating medium supply
JP6035383B1 (en) * 2015-07-03 2016-11-30 東芝電波プロダクツ株式会社 connector
WO2007035165A1 (en) * 2005-09-26 2007-03-29 Bjoerling Thomas Cordless connector
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EP2151020A1 (en) 2010-02-10 application
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JP2010528418A (en) 2010-08-19 application
CA2687568A1 (en) 2008-12-04 application
EP2151020A4 (en) 2014-05-07 application
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