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
  • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
  • H01R13/66—Structural association with built-in electrical component
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R31/00—Coupling parts supported only by co-operation with counterpart
  • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
  • H01R31/065—Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
  • H01R13/66—Structural association with built-in electrical component
  • H01R13/6608—Structural association with built-in electrical component with built-in single component
  • H01R13/6633—Structural association with built-in electrical component with built-in single component with inductive component, e.g. transformer
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
  • H01R13/66—Structural association with built-in electrical component
  • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
  • H01R13/6675—Structural association with built-in electrical component with built-in electronic circuit with built-in power supply

Definitions

• the present invention relates to a power supply for supplying a consumer with a low voltage and in particular to a plug-in device, in which a power plug unit in the form of a removable plug system is interchangeable.
• Plug-in power supplies in the small power range are nowadays increasingly implemented as switching power supplies. Due to their small size and low weight, they have prevailed in many applications and replace the traditional linear devices. Due to the switched-mode power supply technology, a so-called universal input voltage input can be realized in a simple manner, so that the power supply unit can theoretically be operated at any socket outlet of the earth from its electronic design. However, this is prevented by the widely differing connector systems and forms, with the result that mostly unsafe so-called plug adapters must be connected in front, which can unduly increase the torque acting on the socket by the increased distance of the power supply to the socket.
• German Patent DE 43 22 087 C2 discloses a plug-in power supply for supplying electrical equipment with low voltage, in which the contact between the device and the changeover plugs takes place via spring contacts, which are respectively accommodated in the plug and with the voltage transformer assembly of the power supply via contact surfaces on the circuit board of the power supply in contact.
• this solution is relatively expensive, since in each case two springs per plug version are required and beyond the power plug units from two plastic parts, namely the connector contour and a De- disgust, must be trained to ensure the required contact safety. These parts must be joined together in a precise ultrasonic welding process, and in the case of non-optimal welding, the mating and separating forces between the plug and plug-in power supply increase to unacceptable levels. Furthermore, there is no visible locking of the plug unit.
• the solution according to this document is therefore complicated, expensive and only limited process reliability.
• US Pat. No. 6,320,353 B1 discloses the implementation of a plug-in system according to IEC 320 for contacting between a power supply unit and a replaceable power plug unit.
• this solution requires the formation of a complete jack with two spring contacts per plug and for the connection between the spring contacts and the connector pins partially stamped and bent parts for each plug.
• the design of the plug housing is in two parts in order to be able to ensure the required contact safety. Therefore, this construction is relatively expensive and expensive.
• Taiwanese document TW421366Y discloses a solution with comparatively wide spring contacts arranged transversely to the longitudinal side in the housing.
• the connector is connected to the housing by this is first introduced into a backdrop, and then pushed along the housing.
• the contact is made by long longitudinal slots in the plug (about 2.5 x 30 mm) directly on the pins.
• the dimensions of these slots exceed the permissible values of the air and creepage distances. This also violates the relevant regulations for protection against electric shock in this construction.
• a locking is ensured by a separate locking slide with an additional spring.
• the design of the connector housing for all connector types is in two parts and thus this design is relatively expensive and expensive.
• a plug coupling is known from published international patent application WO 2004/013937 A1, in which a replaceable power plug is arranged on the housing of a plug-in power supply, wherein on the housing a projecting guide web is provided with contact elements and the power plug has a corresponding corresponding cavity for receiving the Guide web has.
• a recess and the plug a corresponding recess in the recess pin is arranged so that a fixation of the power plug to the housing and a connection of the contact elements of the power plug with contact elements of the guide web can be produced by a corresponding movement of the power plug relative to the housing ,
• the male coupling according to this document has the disadvantage that on the one hand does not meet the relevant standards with respect to the air and creepage distances, and also that unlocking is only comparatively difficult to implement.
• the object underlying the present invention is therefore to provide an improved power supply unit with replaceable power plug unit, which meets the relevant worldwide safety standards, is inexpensive and easy to manufacture and at the same time easy to use.
• the present invention is based on the idea that a low-cost and standard-compliant AC plug system is specified for a switching power supply, in which for attaching the respective primary-side AC plug to the power supply resilient protruding contacts are mounted, which cooperate with housed in openings mating contacts on the AC plug ,
• Each contact pin of the power plug unit is located in a separate recess dimensioned to comply with the requirements of international standard IEC 60884 for contact safety and creep resistance.
• the recesses may have a rectangular cross-section with dimensions of less than 1.8 mm by 4.8 mm. This complies with the relevant regulations for protection against electric shock with regard to permissible values for air and creepage distances. If the contact pins are arranged so that they can be contacted with the spring contacts in a direction which runs essentially along a plug-in direction of the power plug pins into the power socket, it is avoided that a torque on the connection when plugged into the socket is applied between the AC plug and the AC adapter, which may affect the quality of the electrical contact.
• the spring contacts are at least partially surrounded by a collar.
• a collar prevents the spring contacts from being damaged when replacing the power plug unit.
• a collar has a U-shaped cross section, because here a maximum mechanical safety can be ensured with minimal material costs.
• Such a collar can be integrally attached to the housing, in particular it can be molded in the context of an injection molding process in the manufacture of the housing made of plastic.
• mains plug pins are made in one piece with the associated contact pins, maximum stability and the lowest possible contact resistance on the one hand, and ease of manufacture on the other hand, can be ensured.
• the power plug pins and contact pins can be combined in a particularly simple manner by injection into an insulating plastic to the power plug unit. Such an arrangement makes it possible to manufacture the power plug unit from a part and therefore further reduces the manufacturing cost.
• the power plug unit can be latched to the housing. This makes it possible to ensure that the two parts are securely connected with one another, but that they can be easily detached if necessary.
• the solubility of the power plug unit can be realized in a particularly simple and cost-effective manner while ensuring that handling for a User is easy and secure.
• the molded on the housing detent spring also has the advantage that it produces an improved ESD resistance.
• a structurally very simple solution here is the provision of a link which extends in a direction transverse to a plug-in direction of the power plug pins into the power socket.
• Figure 1 is a perspective view of a plug-in power supply according to the invention according to a first advantageous embodiment
• Figure 2 is a side view of the arrangement of Figure 1;
• Figure 3 is a rotated perspective view of the arrangement of Figure 1;
• Figure 4 is a plan view of a housing according to a further advantageous embodiment
• FIG. 5 shows a detail Y from FIG. 4
• Figure 6 is a rotated by 90 ° side view of the housing of Figure 4;
• FIG. 7 shows a section through the housing of FIG. 6 along the section line AA;
• FIG. 8 shows a section through the housing of FIG. 4 along the section line B-B;
• Figure 9 is a side view of a first power plug unit insertable into the housing of Figures 4 to 8;
• Figure 10 is a rotated by 90 ° view of the power plug unit of Figure 9;
• FIG. 11 shows a section through the arrangement of FIG. 10 along the section line C - C;
• FIG. 12 shows a section through the arrangement of FIG. 10 along the section line D - D;
• Figure 13 is a plan view of a power plug unit according to a further advantageous embodiment
• FIG. 14 shows a section through the power plug unit of FIG. 13 along the section line E-E;
• FIG. 15 shows a section through the power plug unit of FIG. 13 along the section line F-F;
• Figure 16 is a plan view of a power plug unit according to a further advantageous embodiment
• FIG. 17 shows a section through the power plug unit of FIG. 16 along the section line U-U;
• FIG. 18 shows a section through the power plug unit of FIG. 16 along the section line W-W;
• FIG. 19 is a plan view of a power plug unit according to a further advantageous embodiment
• FIG. 20 shows a section through the power plug unit of FIG. 19 along the section line GG;
• FIG. 21 shows a section through the power plug unit of FIG. 19 along the section line H-H;
• Figure 22 is a plan view of the power cable adapter insertable into the housing of Figure 4.
• FIG. 23 shows a section through the power cable adapter along the section line I-I;
• FIG. 24 shows a view rotated by 90 ° of the power cable adapter of FIG. 22.
• the replaceable power plug units 102 to 108 correspond in their plug contour and the shape of the power plug pins 1 10 different country standards, such as the European standard EN 50075 for the power plug unit 102, the US standard for the power plug unit 104, the British standard for the power plug unit 106th and the Australian standard for the power plug assembly 108.
• this selection is only exemplary and those skilled in the art will appreciate that the principles of the invention can be applied to any other plug contours and pin shapes.
• the plug-in power supply unit comprises a housing 112, in which a voltage converter assembly, not shown here, for converting a mains voltage into a required low voltage is arranged.
• the opening 114 serves to carry out a low-voltage cable (not illustrated here) to a consumer.
• the housing 112 may also already be part of a consumer.
• 112 spring contacts 116 are provided on the housing, which are connected in the interior of the housing with input terminals of the voltage converter assembly.
• the power plug pins 110 are integrally formed in the power plug unit 102 to 108 with corresponding contact pins 118, which make with the spring contacts 116 an electrical connection to the (not shown here) power outlet.
• the contact pins 118 are housed in small, 1, 8mm x 4.8mm rectangular recesses to comply with the relevant electrical shock protection regulations.
• the connector contour can be formed for all types of connectors in a single operation by molding the connector pins 110. Subsequent costly operations are thus unnecessary.
• a bending of the spring contacts 116 during mounting of the replaceable power plug unit 102 to 108 is prevented by the fact that plastic tabs 120 injection molded onto the housing 112 are in the form of a U-shaped collar and are connected in fertil with the wall of the housing 112 enclose these springs.
• the one-piece design of the interchangeable power plug unit 102 to 108 further implies that no ultrasonic welding is required and therefore a particularly high stability can be achieved.
• the solution according to the invention is further distinguished by a locking arm 122, which is molded onto the housing 112 and which cooperates with the latching, interchangeable plug unit 102 to 108 with a corresponding detent opening 124 provided thereon.
• Guide projections 126 cooperate with a cam groove 128 formed on the housing 112 for guiding the power plug unit 102 to 108 when mounted on the housing 112. Further views of the plug-in power supply 100 according to the invention are shown in FIGS. 2 and 3.
• the power plug unit is moved in the direction 132 until the guide projections 126 can interact with the cam groove 128.
• the direction 132 is substantially parallel to the insertion in the power outlet.
• the power plug unit 102 is moved in a direction 134 transversely to the insertion direction into the mains socket until the latching arm 122 engages in the latching opening 124. In this case, the power plug unit 102 is guided in the cam groove 128. Thus, the power supply 100 is ready for use.
• FIG. 4 Another embodiment of the plug-in power supply according to the invention will be explained in detail with reference to Figures 4 to 24.
• the openings in the plug modules, through which the spring contact contacted the net pin were reduced to a width of 0.9 mm. This is to ensure compliance with the British standard, but without again using an additional shutter.
• the reachability of the contacts can be tested with a test finger of 1 mm diameter. Accordingly, the width of the contact springs was adjusted to about 0.8 mm.
• the side of the housing 112 is shown, on which the power plug unit 102 to 108 is mounted.
• the spring contacts 116 have particularly small dimensions to electrically contact the accommodated in the associated power connector units in very small recesses according to the invention.
• the spring contacts 116 may, for example, have a width a of only 0.8 mm and a length b of 2.5 mm.
• a mounting opening for inserting the spring contact 116 in the housing 112 has, for example, a dimension c of 1, 8 mm.
• the height h of the spring contact entered in FIG. 8 should be approximately 6.2 mm.
• the contact springs are inserted in vertical guides on the inside of the housing side wall (front), so that the blocking surfaces Chen can be reduced because the primary contact is disposed on the outer edge of the circuit board.
• FIGS. 9 to 12 An interchangeable mains plug unit 102 according to the European standard, which can be inserted into the housing 112, is shown in FIGS. 9 to 12. As already mentioned, the entire power plug unit 102 can be produced in a particularly simple manner by molding the power plug pins 110 in one work step.
• the depth d of the opening 140 is at least 5 mm (plus a funnel-shaped insertion depression g of, for example, 0.5 mm) and the width e is less than 1 mm.
• the length f according to the invention should be about 5 mm, for example 4.8 mm.
• the further power plug units 104 to 108 shown in FIGS. 13 to 21 can be mounted on the housing 112, wherein the openings 140 each have the dimensions which are small according to the invention.
• a power cable adapter 142 may be provided which is connected instead of the power plug units 102 to 108 to the housing, so that the power supply 100 is connected via a connectable to the connector 144 power cord with the socket.
• the connector 144 may be formed, for example, as a known, so-called shaver plug connection.
• the present invention therefore makes it possible to overcome the shortcomings of the prior art and to produce a cost-effective plug device with AC plug in compliance with the relevant standards with a minimum of parts and process steps and a maximum of user comfort.

Applications Claiming Priority (2)

Publications (2)

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ID=36968582

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• 2005
  • 2005-08-30 DE DE102005041116A patent/DE102005041116B4/de active Active
• 2006
  • 2006-07-18 WO PCT/EP2006/007065 patent/WO2007025609A1/de active Application Filing
  • 2006-07-18 KR KR1020087007848A patent/KR101019267B1/ko active IP Right Grant
  • 2006-07-18 JP JP2007532911A patent/JP4445016B2/ja active Active
  • 2006-07-18 EP EP06776293.0A patent/EP1920504B1/de active Active
  • 2006-07-18 CN CN200680000747A patent/CN100581003C/zh active Active
  • 2006-08-28 US US11/511,191 patent/US7563115B2/en active Active

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