JP3089956U - Power converter structure - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To change the voltage output of a power converter by a protection device inserted from the outside, to facilitate the replacement, flexible selection, low cost, and low manufacturing cost. Provide a power converter structure that is easy. SOLUTION: A power converter main body and a protection device are provided. The power converter main body has at least a power supply case 11 and a fitting bath 111 formed in the power supply case.
And the protection device is inserted into the insertion bath, and the protection device is provided with a resistance element. If the protection devices having different resistance values are replaced by these configurations, different outputs are output to the power converter main body. Can be formed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a power converter structure, and more particularly to a power converter structure for converting an AC power supply to a DC power supply.

[0002]

[Prior art]

 A power converter is a type of power supply that is often used in various electrical appliances and equipment, such as stereos, electric chargers, earphones, printers, and notebook computers. According to this, the AC power source of the city power is converted to a DC power source of a predetermined value (for example, 5 volts or 12 volts) and output, which is used for the use of respective electric appliances.

[0003] Fig. 1 shows a conventional typical power converter 1a, which includes a power supply case 11a, a lead 12a, a DC plug 13a, and an AC plug 14a, and the power supply case 11a includes an AC plug 14a. The power converter 1a can be used as an electric charger when the AC power received by the power converter 1a is converted to a DC power and the required power is output from the DC plug 13a and connected to, for example, a notebook computer.

However, this type of power converter 1a has a capability that its DC plug 13a outputs only a single voltage, and cannot be used for all electric appliances that require different voltage values. Also, adjustable power converters have been proposed. This is achieved by adding a knob 15a to the power supply case 11a (or by adding a finger switch) and using an adjustment electric circuit (such as a resistance element) in the power supply case 11 as shown in FIG. An adjustment function was provided to allow the user to reach the required output DC voltage value, and the device was designed so that it could be applied to electrical products with different specifications.

However, those conventional techniques still have the following problems. That is, it is necessary to fix the adjustment electric circuit inside the power converter 1a in advance by welding, and the operation is considerably complicated and expensive, and the knob 13a adopts a three-stage or five-stage design. The tolerance is poor, and in practice, an excessive current is output due to the error of the user's position adjustment, and the power converter 1a and the electric product are damaged.

As shown in FIG. 3, the power converter 1a may be used for a vehicle, and the AC plug 14a may be converted to a vehicle power adapter 14a. Therefore, it can be used inside the vehicle by inserting it into the socket inside the vehicle. In addition, the adjusting electric circuit is welded and fixed inside the power adapter 14a for the vehicle. However, as described above, it is necessary to weld and fix the adjustment electric circuit in the vehicle power supply adapter 14a 'in advance, so that the production is troublesome, the cost is high, and the selectivity is also high. There is a limit.

[0007]

[Problems to be solved by the invention]

 The present invention changes the voltage output of the power converter by a protection device inserted from the outside, and provides a power converter structure that is convenient to replace, flexible in selectivity, low in cost, and easy to manufacture. Its primary purpose is to provide.

Another object of the present invention is to provide a power converter structure to which the power input of the city power and the power supply in the vehicle can be applied.

Another object of the present invention is to provide a power converter structure characterized by giving a presentation to a user by emitting light when energized by a display electric circuit.

[0010]

[Means for Solving the Problems]

 To achieve the above object, the present invention includes a power converter main body and a protection device, and the power converter main body has at least a power supply case and a fitting tank formed in the power supply case. And the protection device is inserted into the fitting bath, and the protection device is provided with a resistive element, and when the protection devices having different resistance values are replaced by these configurations, the power converter body has different outputs. It can be formed as follows.

Further, the power converter protection device according to the present invention includes a case, in which a plurality of metal pieces are provided, the metal piece is inserted into the insertion tank, and the resistance element is provided between the metal pieces. Connected to.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the specific structure according to those descriptions is merely a preferred embodiment of the present invention, and It is stated in advance that the range is not limited in a narrow sense.

[0013]

[Embodiment of the invention]

 As shown in FIGS. 4 to 6, the power converter structure according to the present invention has a power converter main body 1 and a protection device 2, wherein the power converter main body 1 has a power supply case 11, a lead 12, and a DC input. The power converter main unit 1 has an AC input terminal 14 and a local power plug. The DC input terminal 13 is a DC plug and the AC input terminal 14 is a local power plug. AC power is supplied to the power supply case 11 by being inserted into the power supply case 11, and is converted to DC voltage by the conversion electric circuit in the power supply case 11, and then supplied to a predetermined electrical product from the DC input terminal. In addition, a fitting bath 111 is formed at the side end of the power supply case 11 so as to be recessed, and is electrically connected to an electric circuit in the power supply case 11. The above-mentioned conversion electric circuit belongs to a general technical field, and thus the description thereof is omitted here.

In addition, the local power socket into which the AC input terminal 14 is inserted can be applied to indoor buildings and traffic tools such as trains, airplanes, and buses.

The protection device 2 is entirely formed in an insulating casing 21 (made of a plastic material or the like), and has two conductive metal pieces 22 inside thereof, and a resistance element 23 between them. The metal pieces 22 are connected to each other and a part of the main body of the metal pieces 22 is exposed from the casing 21 so that the metal pieces 22 can be inserted into the fitting bath 111.

When the user inserts the protection device 2 into the insertion tank 111 by the above-described procedure, an electric circuit inside the power converter main body 1 performs an operation in accordance with the resistance element 23 and outputs a corresponding output. Value, and by replacing the protective device 2 with a different resistance value, a different voltage output can be obtained, so that the selectivity is flexible and the insertion and withdrawal operations can be easily performed. This is quite convenient because the above-mentioned effect can be achieved, and in this way, various problems such as the complexity of the electric circuit of the conventional adjustable power converter, the difficulty of manufacturing, the high cost, and the small number of output selections can be solved. it can. Also, in order to facilitate the identification, the present invention may apply a coating layer of a different color to the casing 21 at the time of manufacture, or print the resistance value thereof.

In addition, the power converter main body 11 is provided with a display electric circuit 112 and is provided with a light emitting diode. When the power is turned on, the light emitting diode is turned on, thereby notifying the user of the situation.

FIG. 6 shows another embodiment of the present invention, in which an AC input terminal 14 can be used in a vehicle power adapter and inserted into a socket in the vehicle, and then used in the vehicle. Will be possible. Therefore, the user can use a notebook computer, an audio-visual optical disk broadcaster, a handheld device, a portable communication tool, and the like on the vehicle by inserting the protection devices 2 having different resistance values.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a conventional power converter.

FIG. 2 is an external perspective view showing an adjustable power converter to which a conventional AC plug is attached.

FIG. 3 is an external perspective view showing an adjustable power converter to which a conventional vehicle power adapter is attached.

FIG. 4 is an explanatory view showing a use state of the present invention before assembly.

FIG. 5 is an enlarged view showing the case of the present invention.

FIG. 6 is an external perspective view showing the assembled state of the present invention.

FIG. 7 is an external perspective view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power converter body 11 Power supply case 12 Lead 13 DC input terminal 14 AC input terminal 21 Casing 22 Metal piece 23 Resistance element 111 Fitting tank 112 Display electric circuit

Claims (6)

[Utility model registration claims] A power converter main body including at least a power supply case and a fitting tank formed in the power supply case; a protection device fitted with the fitting tank and having a resistance element; A power converter structure, characterized in that the power converter main body can generate different outputs by providing the protection device whose value can be replaced. 2. The power converter structure according to claim 1, wherein the power converter body is connected to a DC input terminal and an AC input terminal via leads. 3. The power converter structure according to claim 1, wherein a display electric circuit is further disposed in the power supply case. 4. The power converter structure according to claim 1, wherein a light emitting element is mounted on the display electric circuit. 5. The power converter structure according to claim 1, wherein the AC input terminal is an electric plug of local electric power or a power adapter for a vehicle. 6. The protection device includes a case, in which a plurality of metal pieces are provided, the metal pieces are fitted into the fitting tank, and the resistance element is connected between the metal pieces. The power converter structure according to claim 1, wherein: