JPH058791Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (1) Industrial application field The invention is equipped with a pair of output windings that can be connected in series and in parallel, and can output a low voltage when connected in parallel. , relates to a portable generator that can output both high and low voltages when connected in series.

(2) Prior Art This portable generator is capable of outputting a high voltage, for example 240V, and a low voltage, for example 120V, when both output windings are connected in series by switching the voltage changeover switch device. When the windings are connected in parallel, a low voltage, e.g. 120V, is output, but in the conventional type, output terminals of the same type connected to the same winding have their output terminals aligned in the same direction. In many cases, a low-voltage output outlet is provided corresponding to only one output winding because it is preferable to use a switch or to configure a switching circuit with a switch having as few switching contacts as possible.

(3) Problems to be solved by the invention In the conventional method described above, when taking out low voltage from the low voltage output outlet with both output windings connected in series, one of the output windings is connected in series. Only the output voltage of one output winding is extracted, and the output voltage of the other output winding is not effectively extracted, resulting in poor output extraction capability as a whole.

The present invention was developed in view of the above circumstances, and takes into consideration the problem of the output terminal extraction direction of the low-voltage output outlet and the problem of reducing the number of switching contacts as much as possible. It is an object of the present invention to provide a portable generator that can effectively extract the output voltage from both output windings when outputting a low voltage in a connected manner, and has improved output extraction capability.

B. Structure of the invention (1) Means for solving the problems The portable generator according to the invention includes a first terminal connected to the first line connected to one end of the first output winding, and a first terminal connected to the first line connected to one end of the first output winding. a first low voltage output outlet having a second terminal connected to a second line connected to the other end; a second low voltage output outlet having a first terminal connected to the first line and a second terminal connected to a third line; a low voltage output outlet; a first terminal connected to the first line; a second terminal connected to the second line;
a high-low dual purpose output outlet having a terminal and a third terminal connected to the fourth line; a fifth line connected to one end of the second output winding is connected to the third and fourth lines; A series connection mode in which the sixth line connected to the other end is electrically connected to the first line, and a series connection mode in which the sixth line connected to the other end is electrically connected to the first line, and the fifth and Between the lines and the 6th
and a voltage changeover switch device capable of switching between a parallel connection mode in which the second lines are electrically connected;
Equipped with

(2) Effect When the switching mode of the voltage changeover switch device is a series connection mode, one end of the first output winding is connected to the second output winding.
Connected to the other end of the output winding, both output windings are connected in series, and in this state, low voltage is supplied from the first and second low voltage output outlets respectively corresponding to the first and second output windings. It is possible to take out the high voltage from both high and low output outlets, and if the switching mode of the voltage changeover switch device is a parallel connection mode, the first
and the second output winding are connected in parallel, and in this state, the connection polarity of the second low voltage output outlet corresponding to the second output winding side is reversed from that when connected in series, and the Since the third terminal is isolated from the second output winding, low voltage can be obtained from the dual-purpose output outlet with limited output terminals, and low voltage of the same phase can be obtained from the first and second low-voltage output outlets. Each can be taken out.

(3) Embodiment Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. First, in FIG. 1, this portable generator has a pair of first and second output windings 1 and 2,
A voltage changeover switch device 3 capable of switching between a series connection state and a parallel connection state of both output windings 1 and 2; a dual-purpose high and low output outlet 4 for taking out a high voltage, for example, 240V and a low voltage, for example, 120V; first, second and third low voltage output outlets 5, 6, 7 for taking out low voltage;
and an automatic voltage regulator 8.

Both output windings 1 and 2 have the same specifications, and their output voltages are, for example,
It is 120V.

The high and low output outlet 4 has both output windings 1,
Both output windings 1,
A first terminal 4a connected to the connection point of No. 2, second and third terminals 4b and 4c connected to both ends of both output windings 1 and 2 connected in series, respectively, and a fourth terminal grounded. 4d. Moreover, when the output windings 1 and 2 are connected in parallel, the third terminal 4c is connected to the second terminal 4c.
It is disconnected from the output winding 2.

1st and 3rd low voltage output outlets 5, 7
are first terminals 5a, 7a connected to the first line 1 connecting one end of the first output winding 1 and the first terminal 4a of the dual-purpose output outlet 4, and the other end of the first output winding 1 and Second terminals 5b and 7b connected to the second line 2 connecting the second terminal 4b of the high and low output outlet 4, and a third terminal 5 that is grounded.
c and 7c, respectively.

Further, the second low voltage output outlet 6 is connected to the first low voltage output outlet 6.
It includes a first terminal 6a connected to line 1, a second terminal 6b connected to third line 3, and a third terminal 6c grounded.

When both output windings 1 and 2 are connected in parallel, the first, second and third low voltage output outlets 5, 6 and 7 are connected in parallel between both ends of those output windings 1 and 2, and both output When the windings 1 and 2 are connected in series, the first and third low-voltage output outlets 5 and 7 are connected in parallel between both ends of one output winding 1, and the second low-voltage output outlet 6 is connected between both ends of the second output winding 2 with the connection polarity reversed from when connected in parallel.

Moreover, the first and second low voltage output outlets 5 and 6 are for obtaining an output of, for example, 120V and 15A, and the third low voltage output outlet 7
is for obtaining an output of 120V and 30A, for example. Therefore, in order to prevent connection mistakes, the first and second low voltage output outlets 5,
6 and the third low voltage output outlet 7 are formed so that their terminal shapes are partially different from each other.

The voltage changeover switch device 3 includes first to fourth changeover switches S1, S2, S3, and S4 that operate in conjunction with each other. That is, each of the changeover switches S1 to S4 has a pair of individual contacts S1a, S1b, S2a, and S2.
b; S3a, S3b; S4a, S4b; and common contacts S1c, S2c, S3c, S4c; in one switching mode, the common contacts S1c to S4 are provided.
In the other switching mode, the common contacts S1c to S4c conduct to the other individual contacts S1b to S4.
b, respectively.

One individual contact S1a of the first changeover switch S1
is connected to the second line 2, and the other individual contact S
1b is the third terminal 4 of the high and low output outlet 4
It is connected to the fourth line 4 connected to c. Further, common contacts S1c and S2c of the first and second changeover switches S1 and S2 are connected to the third line 3.
One individual contact S3a of the third changeover switch S3 and the other individual contact S of the second changeover switch S2
2b are interconnected, and the individual contact S2b is connected to one end of the second output winding 2 via the fifth line 5. Further, one individual contact S2a of the second changeover switch S2 and the other individual contact S3b of the third changeover switch S3 are connected to each other,
The individual contact S3b is connected to the other end of the second output winding 2 via the sixth line 6. Furthermore, the common contact S3c of the third changeover switch S3 is connected to the first line 1.

Individual contacts S4a and S4 of the fourth changeover switch S4
b is connected to the intermediate portions of both output windings 1 and 2, and a voltage detection portion 8a of an automatic voltage regulator 8 is connected between the common contact S4c and the first output winding 1.

Next, the operation of this embodiment will be described. When the voltage changeover switch device 3 is operated to connect the common contacts S1c to S4c of each changeover switch S1 to S4 to one of the individual contacts S1a to S4a, the two output windings 1 and 2 are connected in parallel as shown in Fig. 2. That is, one end of the second output winding 2 is connected to the fifth
Line 5 is connected to the first line 1 via individual contacts S2b, S3a and a common contact S3c;
The other end of the second output winding 2 is connected to the second line 2 via the sixth line 6, individual contacts S3b, S2a, common contacts S2c, S1c, and individual contact S1a. The second terminal 6b of the second low-voltage output outlet 6 is connected to the third line 3, the common contact S1
c and the second line 2 via the individual contact S1a
It is connected to a high/low output socket.
The third terminal 4 c of the second output winding 2 is disconnected from the second output winding 2 .

When the voltage changeover switch device 3 is connected in parallel in this manner, the first high/low dual-purpose output socket 4
A low voltage output can be obtained between the first and second terminals 4a, 4b. Therefore, although three output lines can be connected to the plug side of this high and low compatible output outlet 4, the output is limited to only two lines, so that erroneous connection can be reliably prevented. In addition, the terminals of the first and second low voltage output outlets 5, 6 are aligned in the same direction, so that a voltage of the same phase can be taken out.

Next, operate the voltage changeover switch device 3 to connect the common contacts S1c to S4c of each changeover switch S1 to S4.
When conductive to the other individual contacts S1b to S4b,
Both output windings 1 and 2 are connected in series as shown in FIG. That is, one end of the first output winding 2 is connected to the fourth line 4 via the fifth line 5, individual contacts S2b, common contacts S2c, S1c, and individual contacts S1b, and the other end of the second output winding 2 is connected to the first line 1 via the sixth line 6, individual contact S3b and common contact S3c. Further, the second low voltage output outlet 6 is connected to the first low voltage output outlet 6.
It is connected between the first and fourth lines 1 and 4 via the changeover switch S1, and the connection polarity is reversed from that when connected in parallel.

When the voltage changeover switch device 3 is connected in series, a high voltage output can be obtained from between the second and third terminals 4b and 4c of the high and low output outlet 4, and a high voltage output can be obtained from the first or third low voltage output outlet 4. Low voltage outputs can be obtained from the output outlets 5, 7 and the second low voltage output outlet 6, respectively, and the output voltages of both output windings 1, 2 can be effectively taken out.

Moreover, in the series connection state, the common contact S4c of the fourth changeover switch S4 is electrically connected to the other individual contact S4b, and the voltage detection section 8 of the automatic voltage regulator 8
a is connected to both output windings 1 and 2, respectively. Therefore, voltage regulation of both output windings 1, 2 is automatically performed. In contrast, in conventional devices, the voltage of only one output winding, for example 1, is generally automatically adjusted, and the automatic voltage adjustment function is insufficient.

C. Effects of the invention As described above, according to the invention, the connection mode of both output windings can be switched between series and parallel with a simple configuration, and when connected in parallel, the output direction of the terminal at each low voltage output outlet can be switched. The first and second windings correspond to both output windings individually, while taking into account that the
Low voltage output outlets can be connected between both ends of both output windings, and by limiting the output terminals, it is possible to obtain low voltage from both high and low output outlets, and when connected in series, both output windings can be effectively taken out from the low-voltage output outlets corresponding to the output windings, respectively, and the output extraction capacity can be improved as a whole.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is an electrical circuit diagram of the main parts of a portable generator, and Figs. 2 and 3 show connection states according to changes in the switching mode of the voltage changeover switch device. It is a figure which simplifies and shows each. 1, 2... Output winding, 3... Voltage changeover switch device, 4... High and low output outlet, 4a...
1st terminal, 4b...2nd terminal, 4c...3rd terminal, 5...1st low voltage output outlet, 5a,
6a...first terminal, 5b, 6b...second terminal, 6
...Second low voltage output outlet, 8...Automatic voltage regulator, 8a...Voltage detection section, 1...First line, 2...Second line, 3...Third line, 4...Third line 4th line, 5...5th line,
6...6th line.

Claims (1)

[Claims for Utility Model Registration] (1) Equipped with first and second output windings 1 and 2 that can be connected in series and in parallel, and can output low voltage when connected in parallel, and can output high and high voltage when connected in series. In a portable generator capable of outputting both low voltages, a first terminal 5a connected to the first line 1 connected to one end of the first output winding 1 and a second line connected to the other end of the first output winding 1. a first low voltage output outlet 5 having a second terminal 5b connected to the first line 1; a second low voltage outlet 5 having a first terminal 6a connected to the first line 1 and a second terminal 6b connected to the third line 3; A low voltage output outlet 6; a first terminal 4a connected to the first line 1; a second terminal 4a connected to the second line 2;
a high-low dual purpose output outlet 4 having a terminal 4b and a third terminal 4c connected to the fourth line 4; a fifth line 5 connected to one end of the second output winding 2 to the third and fourth lines 3 and 4; A mode in which both the output windings 1 and 2 are connected in series by making the sixth line 6 conductive and connected to the other end of the second output winding 2 conductive to the first line 1;
The third and second lines 3, 2 are electrically connected and the fourth line 4 is separated from the second output winding 2, and the fifth and first lines 5, 1 and the sixth and second lines 6, 2 are connected. A portable generator characterized by comprising: a voltage changeover switch device 3 capable of switching between a mode in which both output windings 1 and 2 are connected in parallel with conduction between them; (2) The voltage changeover switch device 3 has a series connection mode in which the voltage detection section 8a of the automatic voltage regulator 8 is connected between both output windings 1 and 2, and a series connection mode in which the voltage detection section 8a of the automatic voltage regulator 8 is connected between both output windings 1 and 2.
The portable generator according to claim (1), which is a registered utility model, is configured to be switchable between a parallel connection mode in which the voltage detection section 8a is connected to only one of the two.