DE20313370U1 - voltage selector - Google Patents

Description

Voltage switch

The present invention relates to a voltage switch (AC/DC adapter), in particular a voltage switch which can convert an alternating current into various desired direct voltages through a transformer (adapter) by means of the optional insertion of various electronic locking components.

A voltage switch (adapter) is a power supply unit that can be connected to a power supply unit or an electronic device, for example an acoustic device, a charger, headphones, an inkjet printer or laser printer, a notebook computer, etc., so that an alternating current available at home can be converted by this voltage switch into an appropriate direct current (e.g.

DC 5V, DC 9V, DC 12V or DC 16V etc.) to operate various power supplies or electronic systems.

Fig. 1 shows a typical conventional voltage changeover switch (adapter) which comprises a changeover switch body (Ha), a power cord (12a), a DC plug (13a) and an AC plug (14a), the changeover switch body (Ha) having a transformer circuit (main circuit) (not shown in the drawing) therein so that the AC power input through the AC plug (14a) can be converted into a DC power by this voltage changeover switch and the converted DC power can be further output to an electronic device through the DC plug (13a). When the DC plug (13a) is connected to a notebook computer, this voltage changeover switch can serve as a charging device.

However, the above-mentioned DC plug (13a) can only output a single voltage. Therefore, the desired various output voltages for the various electrical devices or electronic systems cannot be provided.

Fig. 2 shows a known improved adjustable voltage switch which has a button (15a) (or a toggle switch) on the switch housing (Ha), this button (15a) corresponding to the

arranged transformer circuit (not shown in the drawing) is designed accordingly so that a desired predetermined output voltage, selectable by turning the knob (15a), can be achieved by adjusting this knob (15a) in order to be able to provide the various voltage specifications of various electrical devices or electronic systems.

The disadvantage of the above-mentioned designs, however, is that the transformer circuit in the voltage switch must be soldered in advance. This means that the known voltage switches are relatively laborious and impractical to assemble and their manufacture requires a significantly higher level of effort. In addition, the knob (15a) is normally designed in such a way that there are 3 or 5 rotary knob positions to which the knob can be set, so that a 3-stage or 5-stage selection is possible. This means that the selection is limited and the known voltage switches are impractical to use. There is also a risk that the knob will come loose after a certain period of use, which can lead to incorrect setting.

Fig. 3 shows another known voltage changeover switch that is used in a motor vehicle, where the AC plug (Ha) is designed as a vehicle electrical system plug connection (14a') that can be connected to a KPZ vehicle electrical system socket. The transformer circuit (not shown in the drawing) must also be soldered into the vehicle electrical system plug connection (14a'). It is therefore relatively laborious and impractical to install the vehicle electrical system plug connection (14a') and there is also a considerably increased outlay for its manufacture.

The invention is therefore based on the important object of creating a multi-purpose voltage switch with which it is possible to convert the output voltage of the voltage switch by means of an external electronic locking component and in which the respective output voltage can be conveniently selected when used, and which is easy to manufacture and replace.

The invention is based on a further object, a

Multi- ^purpose voltage switch ₂ , which

AC mains current or the vehicle electrical system current can be adapted, whereby the transformer circuit installed in the main part of the voltage universal switch forms a plurality of DC outputs and can provide a corresponding three-phase output voltage to an electrical device or an electronic system when a desired position of an electronic locking component is selected.

The stated objects are achieved by the voltage switch with the features according to claim 1.

A main part of the voltage switch can be connected to an AC plug and a DC plug using a connecting cable.

A locking bracket formed with a plurality of holes may be mounted on the main body of the voltage changeover switch for insertion with an electronic locking component and additionally electrically connected to the transformer circuit, wherein the locking bracket may be arranged either in the form of a male or female configuration or in another configuration or in the form of a printed circuit board circuit for electrical connection.

It is possible to arrange a connection opening for connection to the transformer circuit on the three-phase plug.

It is also possible to arrange a connector on the connecting cable and to arrange a connection opening for connection to the transformer circuit.
25

It is also possible to attach the locking pins of the locking bracket accordingly to the electronic locking component.

It is also possible to arrange a housing in the electronic component, which housing has two locking pins arranged on it, wherein a component between these two locking pins for converting different output voltages from the main part of the voltage switch, wherein a resistor, a capacitor

or an inductive resistance can be arranged.

Further features and advantages of the invention will become clear from reading the following description of preferred embodiments, which refers to the drawings, in which:
5

Fig. 1 is a schematic representation of a known conventional voltage switch;

Fig. 2 is a schematic diagram of a known conventional voltage switch equipped with an AC plug and an adjustable knob;

Fig. 3 is a schematic representation of a known conventional voltage switch equipped with a vehicle electrical system plug connection and an adjustable knob;

Fig. 4 is an exploded perspective view of the present invention;

Fig. 5 is a perspective view of the present invention in an assembled configuration;

Fig. 6 is a schematic representation of the present invention, wherein a

electronic locking component is shown; 25

Fig. 7 is a schematic representation of the present invention showing another electronic locking component;

Fig. 8 is a schematic representation of the present invention showing another electronic locking component;

Fig. 9 shows a further preferred embodiment of the invention;

Fig. 10 shows a further preferred embodiment of the invention;

Fig. 11 shows a further preferred embodiment of the invention, wherein the

electronic component is not yet shown assembled;
5

Fig. 12 shows a further preferred embodiment of the invention, wherein the
electronic component is not yet shown assembled;

Fig. 13 is a perspective view of an electronic component according to Fig. 12;
10

Fig. 14 shows a further preferred embodiment of the invention, wherein the
electronic component is not yet shown assembled;

As can be seen from Fig. 4 and 5, a voltage changeover switch according to the invention essentially consists of a main part (1) and an electronic locking component (2), wherein a changeover switch housing (11) is provided in the main part (1) of the voltage changeover switch and a transformer circuit (master circuit) is formed in this main part (1) of the voltage changeover switch (as such, this is general state of the art and is therefore not described in more detail here) and the transformer circuit is connected to an AC plug (14) and a DC plug (13) by a connecting cable (12). The AC plug (14) serves to receive the alternating current, which is fed to the transformer circuit in order to be converted there into a direct current. The converted direct current is then fed through the direct current plug to an electrical device or an electronic system. A locking bracket (15) with a plurality of holes (16) is arranged in a recess on the changeover switch housing (11). The locking bracket (15) shown in the exemplary embodiment is designed, for example, in the form of a pentagon with five holes.

Two locking pins (21) are arranged on an electronic locking component (2) for connection to the holes (16) of the locking bracket (15).

Since a voltage regulator located in the main part (1) of the voltage switch

located transformer circuit is already set up to provide a plurality of required output DC voltages, an appropriate selection of the locking pins (21) can be carried out in order to connect the transformer circuit and output a corresponding voltage.
5

After the two locking pins (21) of the electronic locking component (2) are connected in the corresponding holes (16) of the main part (1) of the voltage switch, the transformer circuit in the main part (1) of the voltage switch can provide a corresponding output voltage.

From Fig. 6, 7 and 8 it can also be seen that the main body (1) of the voltage changeover switch can convert various output voltages after replacing various electronic locking components (2). The electronic locking components (2) shown in the embodiments can convert, for example, DC 16V, DC 19V or DC 20V etc. output voltages, which can be used optionally on an electrical device or an electronic system. The spatial division and design of locking pins (21) are arranged in advance in a practical manner. An advantage of the above-mentioned constructions is that the voltage changeover switch according to the invention can be manufactured at a considerably lower cost and is easy to assemble. In addition, the nominal output voltage can be applied to each electronic component for identification purposes during manufacture.

Fig. 9 shows a further preferred embodiment of the invention, wherein the AC plug (14) can be arranged in the form of a vehicle electrical system plug connection (14') so that it can be connected to a vehicle electrical system socket. In this way, various electronic locking components (2) can advantageously be connected to the main part (1) of the voltage switch in order to be able to use a notebook, a DVD-ROM, a PDA device or a mobile communication system in a motor vehicle.

Fig. 10 shows another preferred embodiment of the invention, wherein the connection

for the locking bracket (15) and the electronic locking component

(2') can also be designed according to plug connections of a male plug (plug) and a female socket (socket). A connection opening (17) for receiving an electrical connection terminal is formed in the locking bracket (15) of the main part (1) of the voltage changeover switch so that it can be connected to an electronic locking component (2') designed with a plug connection.

Since a transformer circuit located in the main part (1) of the voltage switch is already set up to provide a plurality of required output DC voltages, the transformer circuit can be switched on after connecting the electronic locking component (2') to the connection opening (17) of the locking bracket (15) in order to be able to output a corresponding voltage.

Fig. 11 shows another preferred embodiment of the invention, wherein the electronic component is not yet shown assembled and comprises a square locking bracket (15') provided with four sets of holes (16') on the main body (1) of the voltage changeover switch. By connecting the two locking pins (2Γ) of the electronic locking component (2) to the corresponding holes (16') of the main body (1) of the voltage changeover switch, the transformer circuit formed in the main body (1) of the voltage changeover switch can produce a corresponding rotary output voltage, for example DC 15V, DC 16V, DC 19V or DC 20V.

It is also possible to design the locking bracket (15, 15') according to the invention in the form of a male plug and a female socket, in various designs and in the form of a printed circuit board circuit in order to be able to achieve a power switch-on.

Fig. 12 shows another preferred embodiment of the invention, wherein the electronic component is not yet shown assembled. It is also possible to arrange a connection opening (131) on the DC plug (13) and to connect it to the above-mentioned transmitter circuit so that an electronic locking component (2) can be inserted therein. An electronic locking component (2) consists essentially of an insulating housing (20) and two

Locking pins (21), the two locking pins (21) being connected by a resistor (22) (as shown in Fig. 13) and the strips of the two locking pins (21) being designed to protrude from the insulating housing (20) so that they can be inserted into the connection opening (131) of the DC plug (13).
5

After the electronic locking component (2) is inserted into the connection hole (131) of the DC plug (13), the transformer circuit can cooperate with the resistor (22) to provide a corresponding output voltage. By replacing the electronic locking components (2) with various resistors, various output voltages can be produced. Therefore, it is very flexible in selection and only requires a simple operation of removal and insertion.

Fig. 14 shows another preferred embodiment of the invention, the electronic component not yet being shown assembled. It is also possible to arrange a connector (3) at an appropriate location near the DC plug (13) of the connecting cable (12) connected to the main body (1) of the voltage changeover switch and to provide a connection opening (31) on this connector (3) and to electrically connect it to the above-mentioned transformer circuit. By replacing the electronic locking components (2) with various resistors, various DC output voltages can be converted from the main body (1) of the voltage changeover switch, which can be output to an electrical device or an electronic system through the DC plug (13).

It is also possible to form the above-mentioned resistor (22) by means of an electronic component, e.g. a capacitor, an inductive resistor or similar components.

As can be seen from the above description, the voltage switch allows for convenient and simple installation, reduces manufacturing costs and reduces the risk of use.

The designations and descriptions of the individual parts of the embodiment according to the present invention as well as the drawings serve only for

Illustrative of the preferred embodiment of the present invention and are not intended to limit the scope of the present invention. It is to be understood that the embodiment described above may be embodied in various ways without departing from the spirit and scope of the present invention. Accordingly, the following claims, which are a part of this invention, are also intended to apply to any modifications of the embodiments.

A voltage switch (AC/DC adapter) is described, which essentially consists of a main part (1) of a voltage switch and an electronic locking component

(2), wherein a transformer circuit (master circuit) is provided in said main part (I) of the voltage switch, which is electrically connected to a locking component (2) arranged in said main part (1) of the voltage switch so that a suitable electrical component can be inserted thereon as a replacement, so that the main part (1) of the voltage switch can output different DC voltages as required.

Claims (9)

1. Voltage switch (AC/DC adapter) comprising essentially a main part ( 1 ) of the voltage switch and an electronic locking component ( 2 , 2 '), wherein a transformer circuit (master circuit) is provided in the main part ( 1 ) of the voltage switch, which is electrically connected to the locking component ( 2 ) arranged in the main part ( 1 ) of the voltage switch, characterized in that a suitable electrical component can be selectively inserted thereon so that the main part ( 1 ) of the voltage switch can output different DC voltages as required. 2. Voltage switch according to claim 1, characterized in that the main part ( 1 ) of the voltage switch is connected to an AC plug ( 14 ) and a three-phase plug ( 13 ) by a connecting cable ( 12 ). 3. Voltage switch according to claim 1, characterized in that a locking bracket ( 15 , 15 ') with a plurality of holes ( 16 , 16 ') for receiving an electrical locking component ( 2 , 2 ') is provided on the main part ( 1 ) of the voltage switch and is electrically connected to the transmitter circuit. 4. Voltage switch according to claim 3, characterized in that the locking holder ( 15 , 15 ') is designed in the form of a male or a female plug connection, in various designs or in the form of a printed circuit board circuit for electrical switching on. 5. Voltage switch according to claim 2, characterized in that a connection opening ( 131 ) is arranged on the DC plug ( 13 ) for switching on the transformer circuit. 6. Voltage switch according to claim 2, characterized in that a connecting part ( 3 ) is arranged on the connecting cable ( 12 ) and a connection opening ( 31 ) which can be electrically switched on with the transformer circuit is arranged on the connecting part ( 3 ). 7. Voltage switch according to claim 1, characterized in that a plurality of locking pins ( 21 , 21 ') are formed on the electronic locking component ( 2 , 2 ') corresponding to the holes ( 16 , 16 ') of the locking bracket ( 15 , 15 '). 8. Voltage switch according to claim 1, characterized in that the electronic locking component ( 2 ) essentially consists of a housing ( 20 ) and two locking pins ( 21 ) arranged on this housing ( 20 ), wherein a component ( 22 ) is connected to the two locking pins ( 21 ) so that the main part ( 91 ) of the voltage switch can provide various output voltages. 9. Voltage switch according to claim 8, characterized in that the component ( 22 ) is a resistor, a capacitor or an inductive resistor.