KR910007978Y1 - Plug - Google Patents

Abstract

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Description

110V / 220V combined automatic voltage changer

1 is an exploded perspective view showing the configuration of the flocs according to the present invention.

2 to 4 are cross-sectional views of the coupling state showing the state of use of the floc according to the present invention, a is a cross-sectional view of the state in which each of the plug terminal is embedded in the plug housing, b is a cross-sectional view of the A-A line of the in-phase.

Fig. 3A is a cross sectional view when used for 110V, and b is a sectional view taken along line B-B of the statue.

Fig. 4A is a cross sectional view when used for 220V, and b is a C-C cross sectional view.

5 is a diagram of a load-side connection state of an electric machine employing the plug of the present invention, wherein a is a connection diagram when using a 110V voltage, and b is a connection diagram when using a 220V voltage.

* Explanation of symbols for main parts of the drawings

1: Fluctu support 11, 12, 13, 14: Challenge

11a, 14a: straight portion 11b, 14b: arc portion

12a, 13a: vertical connecting piece 12b, 3b: horizontal connecting piece

20, 20 ': 110V plate-shaped terminal 20a, 20'a: protrusion connection piece

30, 30 ': 220V rod terminal 21, 31: operation knob

22, 32: connecting piece 33: connecting piece

40: Fluctuated body 41, 41 ': guide groove

42, 42 ', 43, 43': Terminal hole 50: Fixture

51, 51 ': bullet piece 52: intermediate support piece

The present invention relates to a 110V / 220V combined automatic voltage switching plug used to input power to a 110V / 220V combined electrical and electronic equipment that directly uses AC power, such as a fan or hair dryer, in particular the electrical equipment inside the Four conductive pieces connected to the load side of each of them, and 110V plate terminal and 220V rod terminal connected to each of the conductive pieces together with the plug terminal suitable for the operating voltage by simple operation of the operation knob formed integrally with each terminal. The present invention relates to a 110V / 220V combined automatic voltage switching plug that selectively draws out and switches the voltage connected to the load side of the device by drawing out the selected plug terminal.

In general, 110V / 220V combined electric equipment that uses AC power directly, such as a fan or hair dryer, has four connections on the load side of the equipment to which the AC power is input. As shown in a of FIG. 5, the first connection part C1, the third connection part C3, the second connection part C2, and the fourth connection part C4 are connected to each other so that the load L1 and L2 are connected to the first connection part C1. And the fourth connection part C1 and C4 are connected in parallel, and when used at 220V, the third connection part C3 and the second connection part C2 are connected as shown in b of FIG. 5 to load L1. (L2) is adjusted in accordance with the use voltage by being connected in series between the first and fourth connection portions C1 and C4.

Therefore, such a conventional electric equipment is provided with a separate switching switch for switching the input voltage in accordance with the power source used, and the power cord connected to the switching switch of such electrical equipment is usually a fixed 220V dedicated plug is installed. In addition, there is a separate adapter-type 110V dedicated plug that is selectively connected to the 220V dedicated plug.

Therefore, in such a conventional electric equipment, each of the above-described voltage changeover switch and a separate adapter type plug must be provided, and even in this case, the input voltage applied to the device by operating the changeover switch according to the used voltage is 110V or The switch to 220V, and when using the 110V voltage, there was a difficulty and inconvenience in use, such as connecting the 110V plug to the 220V dedicated plug terminal of the power cord and then connected to the power outlet.

In addition, when the power switch is connected to an electric device without switching the switch according to the used voltage due to carelessness or inexperience of the user, that is, the power supply of the device is adjusted to 110V. When connecting the plug, there was a problem such as damage to the circuit of the device by overvoltage.

Therefore, the main object of the present invention is to provide a 110V / 220V combined automatic voltage switching plug that does not have the above problems, inconveniences and problems.

Another object of the present invention is to provide a plug terminal, 110V plate terminal and 220V rod terminal, and a conductive piece that is in contact with each of the plug terminal inside the plug housing for electrical equipment connected to the power outlet. 110V / 220V can be used to selectively take out the required plug terminal by simple operation of the operation knob and to automatically switch the input voltage to the load-side connection part of the electrical equipment by taking out the plug terminal. It is to provide an automatic voltage switching plug.

Another object of the present invention is to combine a 110V / 220V that can keep the fixed position of the extracted plug terminal is securely fixed by allowing the plug terminal drawn out of the plug housing to be fixed by the bullet piece of the fixture in contact with the operation knob. It is to provide automatic voltage switching plug.

In order to achieve the above object, the 110V / 220V combined automatic voltage switching plug of the present invention is configured as follows.

Four conductive pieces protrude in parallel on one surface of the floc support in which one end of the input power cord is embedded, and four power lines connected to the load side connection of the electric device are connected to one end of each conductive piece embedded in the support, respectively. A pair of left and right pairs of 110V plate-shaped terminals and 220V rod terminals which are always in contact with two conductive pieces on both sides of each of the conductive pieces and selectively contact two conductive pieces in the middle part of the flocks, coupled to one side of the floc support. Are placed respectively.

The plug terminals installed in this way, that is, two pairs of plate-shaped terminals and rod-shaped terminals are connected to each other by a connecting piece having an operation knob, and the operation knobs are arranged to be moved along guide grooves formed on the upper and lower surfaces of the plug enclosure. By moving each of the operation knobs, each of the plug terminals can be drawn out to the outside of the front face of the plug housing. In this way, the inner side of the connecting rod of the bead-like terminal that is drawn out can connect the load side connection of the device in series through the respective conductive pieces. Connecting pieces are provided, and connecting portions for connecting the load-side connecting portions of the apparatus in parallel through respective conductive pieces are formed on the inner side surfaces of the rear ends of both plate-shaped terminals.

In addition, a fastener having a bullet piece that is in contact with a connection piece of each of the plug terminals drawn out to the outside is installed in the middle of the inside of the plug housing in which the plug terminal and the conductive piece are arranged.

In the 110V / 220V combined automatic switching plug according to the present invention, both 110V plate terminals and 220V rod terminals arranged in the plug housing are selectively placed on the load side of the electric equipment using AC power through the respective conductive pieces. Since the plate-shaped or rod-shaped terminal suitable for the voltage used is drawn out of the plug housing, the switching of the input voltage to the load side of the device can be automatically performed. The pulling-in operation can be performed simply by pushing or pulling the operation knobs exposed to the upper and lower surfaces of the floc container, respectively.

In addition, the drawn out as described above is fixed and stable to the fixed position of the drawn plug terminal is used as the plug terminal of the fixed fastener that is automatically contacted to the connecting piece of the operation knob as each plug terminal is drawn out of the use of the floc Concerns such as poor electrical connection can be completely eliminated.

The foregoing and other objects and features of the present invention may be understood in more detail by considering the following description described by the accompanying drawings, which are illustrated by way of example.

1 is an exploded perspective view showing the overall configuration of the plug according to an embodiment of the present invention, Figure 2 is a cross-sectional view of each of the plug terminal is built in the plug body of the present invention, Figures 3 and 4 are the present invention As shown in this figure, the flocks according to the present invention have a predetermined interval on one surface of the plug support 1 in which one end of the power cord W is embedded. First, second, third, and fourth protrusion pieces 11, 12, 13, 14, and protrudingly installed in parallel, and formed at the tip of the first and fourth conductive pieces 11, 14, respectively. It is always in contact with the L-shaped straight portions 11a, 14a and the arc portions 11b, 14b of the arc-shaped connecting piece, and selectively contacts the second and third conductive pieces 12, 13, and the rear end of the body. Each pair of 110V plate terminals 20, 20 'and 220V rod terminals (3 and 3) connected by connecting pieces 22 and 32 having operating knobs 21 and 31 respectively. 0, 30 '), and guide grooves 41, in which the plate-shaped terminals 20 and 20' and the operation knobs 21 and 31 of the rod-shaped terminals 30 and 30 'can be moved back and forth. 41 ') and the terminal holes 42, 42', 43, 43 ', through which the respective terminals 20, 20', and 30, 30 'can be drawn out, to the upper, lower and front surfaces of the body. And a connection piece of each of the operation knobs 21 and 31 which are provided at the plug housing 40 and fixed to one surface of the floc support 1 and moved forward along the guide grooves 41 and 41 '. 22) (32) fasteners 50 which are provided on the upper and lower sides of the intermediate support piece 52, respectively, which are in contact with the rear end of each of the intermediate pieces 52, and are disposed over the inner middle portion of the plug box 40; It consists of.

The second and third conductive pieces 12, 13 of the conductive pieces 11, 12, 13, 14 are vertically connected pieces 12a extended outwardly bent at the distal ends of the straight pieces arranged in parallel with each other. 13a is formed, and horizontal connecting pieces 12b and 13b which are bent inwardly are formed at the lower ends of the vertical connecting pieces 12a and 13a.

In addition, the two plate-shaped terminals 20, 20 'is formed on the inner surface of the rear end of the body connected by the connecting piece 22, the protrusion connecting pieces (20a) (20'a) having a predetermined length and thickness are respectively formed As the terminals 20 and 20 'move forward, the inner surfaces of each of these protruding connecting pieces 20a and 20'a become vertical connecting pieces 13a of the third and second conductive pieces 13 and 12 ( 12a) the outer and outer surfaces of the rod-like terminals 30 and 30 'are respectively connected to the third and second conductive pieces 13 at the middle of the upper surface of the connecting piece 32 connecting the rear ends of the bodies. The connection piece 33 which can be selectively contacted with the lower surface of the horizontal connection piece 13b, 12b formed in the (12) is fixed.

On the other hand, the fastener 50 for fixing the plate-like terminal 20, 20 'and the rod-shaped terminal 30, 30' as described above is the front end and the rear end of the intermediate support piece 52 of the plug housing 40 The second and third conductive pieces 12 and 13 are fixed to the support hole 53 formed between the front surface of the c) and the inner surface of the floc support body 1, and formed inside the distal end of the intermediate support piece 52. A spring 14 made of an insulating material interposed between the vertical connecting pieces 12a and 13a is inserted.

In addition, one end of the body having a predetermined width and length is connected to the upper end and the lower end of the intermediate support piece 52, respectively, which are arranged above and below the intermediate support piece 52. The front end portion is disposed in an inclined direction with a predetermined distance from the intermediate support piece 52, and the operation knobs 21 and 31 are located at the rear ends of the upper and lower guide grooves 41 and 41 '. That is, in the state in which each of the plate-shaped terminals 20, 20 'and the rod-shaped terminals 30, 30' are embedded in the flock enclosure 40, the images of the inclined carbon fragments 51, 51 'compressed inwardly, When the inner surface of each of the connecting pieces 22 and 23 is in contact with the lower surface, and the connecting pieces 22 and 32 and the operating knobs 31 and 32 are moved forward, the inclined bullet pieces 51 The tip end of 51 'is in contact with the rear end inner side of each of the connecting pieces 22 and 32, respectively.

In the drawings, reference numerals W1, W3, W2, and W4 are connected to the ends of the respective conductive pieces 11, 12, 13, and 14 embedded in the floc support 1, respectively, as shown in FIG. It is connected to the load side connection part C1 (C2) (C3) (C4) of the electric equipment as shown, and the power supply line was shown, and 15, 15 'is the arc of the said 1st and 4th conductive piece 11,14. The contact force between each of the conductive pieces 11, 14 and the rod-shaped terminals 30, 30 'is provided between the upper portions 11b and 14b and the inner surface of the floc box 40, and the spring 44, 44 ′ is formed on both side walls of the plug box 40 to show the support protrusions fitted into the support grooves (not shown) of the 220V outlet.

The method of using the inventive design configured as described above and the effects thereof are as follows.

2, a and b of FIG. 2 show the plate-shaped terminals 20 and 20 'and the rod-shaped terminals 30 and 30' of the 110V / 220V combined automatic voltage switching plug according to the present invention. In this state, the plate-shaped terminals and the rod-shaped terminals 20 ', 30', and 20 and 30 disposed adjacent to each other are the red portions and the arc portions of the first and fourth conductive pieces 11 and 14, respectively. 11a and 11b and 14a and 14b, respectively, and the third and second conductive pieces 13 and 12, the terminals 20 ', 30', 20 and 30, and the conductive piece 13, respectively. (12) is in a state of maintaining a constant distance.

In such a state, when the plug of the present invention is to be connected to the 110V power outlet and used, the operation knob 21 located in the upper guide groove 41 of the plug box 40 is pushed forward and integrally therewith. The plate terminals 20 and 20 'are exposed to the outside through the terminal holes 42 and 42' on the front of the plug box 40 as shown in a of FIG. 3, respectively. Protruding contact pieces 20a and 20'a formed on the inner surface of the rear end of the second end 20 'are connected to the vertical connecting pieces 13a and 12a at the tips of the third and second conductive pieces 13 and 12, respectively.

Therefore, when the plate terminals 20 and 20 'exposed to the outside in such a state are connected to the 110V power outlet, the first and third conductive pieces 11 and 13 connected to the plate terminals 20 and 20'. ) Is connected to the load side connection portions C1 (C3) through the respective power supply lines W1 and W3, and the second and fourth conductive pieces 12 and 14 are connected via the respective power supply lines W2 and W4. Voltage required by being connected to the load side connecting portions C2 and C4 and connecting the load L1 and L2 in parallel between the first and fourth connecting portions C1 and C4 as shown in a of FIG. The switching action of is done automatically.

Further, as shown in b of FIG. 3, the front end of the upper bullet piece 51 of the fixture 50 is brought into contact with the lower end of the rear side of the connecting piece 22 moved forward as described above. Hold the fixed position of the plate-shaped terminal (20, 20 ') to be moved.

On the other hand, when connecting the plug of the present invention to the 220V power outlet in the above state, by pressing the coal piece 51 exposed through the guide groove 41, the coal piece 51 in contact with the rear end of the connecting piece 22 To the lower side and pull the operation knob 21 to the rear side to lead both of the plate-shaped terminal (20, 20 ') into the interior of the floc box 40, then the lower guide groove (41') of the floc box (40) By moving and operating the operation knob 31 positioned in the same manner as described above, 220 V rod terminals 30 and 30 'required as shown in a of FIG. 4 can be easily drawn out. In the same state, since the connecting piece 33 provided on the upper surface of the connected power piece 32 is connected to the horizontal connecting portions 12b and 13b of the second and third conductive pieces 12 and 13, respectively, When the rod-shaped terminals 30 and 30 'drawn out in the state are connected to the outlet, the load L1 as shown in b of FIG. When L2 is connected in series between the first and fourth connection portions, the voltage is automatically switched.

In addition, the rod-shaped terminal (30, 30 ') moved forward as described above, the lower rod piece (51') of the fastener 50 is in contact with the connecting piece 32, the rod-shaped terminal (30, 30 ') drawn out I can fix it stably.

As described above, the present invention provides a 110V / 220V combined plug for supplying power to a 110V / 220V combined electric device using AC power directly. Install several conductive pieces to which the power line is connected, and arrange the 110V plate terminal and the 220V rod terminal with their respective operating knobs in parallel between each conductive piece, according to the movement operation of each operation knob. The plate and rod terminals can be pulled in or out of the plug box, and the switching of the voltage input to the load side connection of the electric equipment can be automatically performed according to the selection of the terminal. Depending on the voltage, the required terminal can be simply drawn out for more convenient and safe use. By automatically switching the voltage required without the use of a ring switch, there is an effect, such as being able to completely exclude the risk of damage and connection failure due to the electrical device to the top of careless users.

Claims (3)

In the 110V / 220V combined plug of an electric device using AC power directly, the first, second, third and fourth conductive pieces 11 disposed on one surface of the plug support 1 in which one end of the power cord is embedded (12) (13) (14) and always in contact with the first and fourth conductive pieces (11) (14) and selectively connected to the third and second conductive pieces (13) (12) and the rear end 110V plate terminals 20 and 20 'and 220V rod terminals 30 and 30' connected to the connecting pieces 22 and 32 having additional operation knobs 21 and 31, respectively, and the terminals 20, 20 '), the upper and lower guide grooves 41 and 41' and the terminal holes 42 and 42 'are disposed so that the operation knobs 21 and 31 of 30 and 30' can be moved back and forth. 43 and 43 ', respectively, and a plug box 40 coupled to one surface of the plug support 1, and each operation knob 21 moved forward along the guide grooves 41 and 41'. The coal pieces 51 and 51 'which are respectively in contact with the rear ends of the connecting pieces 22 and 32 of the 31 are provided on the upper and lower sides of the intermediate support piece 52 and the flocks 110V / 220V Combine automatic voltage switching plugs, characterized by consisting of a fixture 50 is disposed inside the intermediate part of the body 40. The straight portion 14a of claim 1, wherein the fourth and first conductive pieces 14 and 11 are in contact with the plate-shaped terminals 20 and 20 'and the rod-shaped terminals 30 and 30'. , 11a) and a circular arc part (14b, 11b), respectively, characterized in that the 110V / 220V combined automatic voltage switching flocks. The third and second conductive pieces (13) and (12) of each of the plate-shaped terminals (20, 20 ') drawn to the outside of the floc box (40) outside the front end of each plate-like body. Vertical connecting pieces 13a and 12a are respectively provided in contact with the protruding contact pieces 20a and 20'a formed on the inner surface of the rear end, and each of the rod-like terminals is provided at a lower end of each of the vertical connecting pieces 13a and 12a. 110V / 220V combined automatic voltage switching flocks provided with horizontal connecting pieces 13b and 12b which are connected together to a connecting piece 33 formed on an upper surface of the connecting piece 32 of 30 and 30 '.