JP2002367724A - Power supply coupling part and electric appliance equipped with power supply coupling part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply coupling part with which a further safety can be secured by more surely preventing short-circuiting of a metal contact part. SOLUTION: A power supply coupling part 14 consists of a connector 18 fitted to the supply-side device of power source and a connector 19 fitted to the side of a device power source is supplied. The connector 19 is equipped with magnets 20a, 20b and metal contact parts 21a, 21b, and the connector 18 is equipped with a base part 23 with magnets 26a, 26b fitted and a movable part 24 with metal contact parts 33a, 33b fitted and supported on the base part 23 by the biasing force of a spring 25. When the magnets 26a, 26b are fixed to the magnets 20a, 20b with the metal contact parts 33a, 33b in contact with the metal contact parts 21a, 21b, the movable part 24 moves toward the base part 23 against the biasing force, so that the power source supplying side device and the supplied side device come in a state of conduction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply connecting portion for detachably connecting a power supply side device and a power supply side device,
The present invention relates to an electric appliance including the power supply connection.

[0002]

2. Description of the Related Art As a power supply connecting portion for detachably connecting a power supply side device and a power supply side device to each other, for example, the one shown in FIG. 5 is known. This power connection 1
It is employed in an electric appliance such as an ultrasonic dishwasher or an electric pot, and is composed of a connector 2 provided on a power supply side device and a connector 3 provided on a power supply side device.

The connector 2 has a magnet 4 exposed to the outside and a concave portion 5 formed so as to sandwich the magnet 4.
a, 5b, and the metal contacts 6 are provided in the recesses 5a, 5b.
a, 6b are provided. Conductive wires 7a and 7b are connected to the metal contact portions 6a and 6b, and when the plug of a power cord (not shown) is inserted into an outlet, the conductive wires 7a and 7b are connected.
A voltage is applied to b.

The connector 3 includes a magnet 8 exposed to the outside, and bar-shaped metal contact portions 9a and 9b provided so as to sandwich the magnet 8. Metal contact parts 9a, 9
b are connected to conductors 10a and 10b.
a and 10b are connected to a piezoelectric element or the like (not shown).

The connector 2 and the connector 3 are detachably connected by a magnet 4 and a magnet 8, and in a state where both are connected, the metal contact portions 6a and 6b and the metal contact portions 9a and 9b come into contact with each other and the supply side. Device conductors 7a, 7b
And the conducting wires 10a and 10b of the supply-side device conduct.

[0006]

By the way, in the power supply connecting portion 1, the metal contact portions 6a and 6b are provided in the concave portions 5a and 5b, so that the plug 2 is not connected to the connector 2 even though the connector 2 is not connected to the connector 3. Although the metal contact portions 6a and 6b are designed so as not to be short-circuited even if they are inserted into an outlet, for example, in an electric appliance such as an ultrasonic dishwasher or an electric pot, the connectors 2 and 3 are easily wetted by water. Since it can be used in place, it is desirable to more reliably eliminate the possibility of shorting of the metal contacts.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a power supply connecting portion capable of more reliably preventing a short circuit of a metal contact portion and ensuring further safety, and a power supply connecting portion having the same structure. An object of the present invention is to provide an electric appliance provided with the electric device.

[0008]

According to a first aspect of the present invention, there is provided a power supply connecting portion for detachably connecting a power supply side device and a power supply side device, wherein the power supply side device includes: Or comprises a fixed contact portion provided on one side of the supply-side device and a movable contact portion provided on the other side,
The fixed contact portion includes first fixing means and a first metal contact portion, the movable contact portion includes a base provided with second fixing means fixed to the first fixing means, and the first metal contact portion. A movable portion supported by a biasing force of an elastic member with respect to the base portion, wherein the second metal contact portion is in contact with the first metal contact portion. When the second fixing means is fixed to the first fixing means, the movable unit moves against the urging force with respect to the base, so that the supply-side device and the supplied-side device Are in a conductive state.

According to a second aspect of the present invention, there is provided an electric appliance including the power supply connecting portion according to the first aspect.

[0010]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an ultrasonic dishwasher as an electric appliance according to the present invention. The dishwasher 11 includes a control device 12 as a power supply side device and a cleaning tank 13 as a power supply side device, and these are detachably connected via a power supply connection portion 14.

A control circuit (not shown) is built in the control device 12, and a power cord 15 and a power supply cable 16 are provided.
And an operation unit 17 are provided. When the plug 15a of the power cord 15 is inserted into the outlet, a voltage is supplied to the power supply cable 16 via the control circuit, and the voltage is adjusted by operating the operation unit 17. A connector 18 is provided at the end of the power supply cable 16 as a movable contact portion.

The cleaning tank 13 has a built-in piezoelectric element (not shown) on its peripheral wall 13a or bottom 13b.
A connector 19 is provided as a fixed contact portion to which the connector 18 of the power supply cable 16 is connected. Cleaning tank 13
When a voltage is applied to the piezoelectric element in a state in which the washing liquid is filled, the dishes in the washing liquid are washed.

As shown in FIG. 2, the power supply connection portion 14 is composed of connectors 18 and 19, and the connector 19 has magnets 20a and 20b as first fixing means and metal contact portions 21a and 21a as first metal contact portions. 21b. The metal contact portions 21a and 21b are connected to the piezoelectric element by conducting wires 22a and 22b.

The connector 18 has a base 23 and a movable part 24.
And a spring 25 as an elastic member.

The base 23 is provided with magnets 26a and 26b as second fixing means, and a recess 27 is provided substantially at the center thereof. In the concave portion 27, metal members 28a, 28b arranged opposite to each other and insulating members 29a, 2 fixed inside the metal members 28a, 28b.
9b. The metal members 28a, 28b are connected to the control circuit by conducting wires 36a, 36b.

The movable portion 24 includes an insulating plate portion 30 and a flange portion 31 connected to each other by a bar portion 32. The metal contact portion 3 serving as a second metal contact portion is provided on the surface of the plate portion 30.
3a and 33b, and metal pieces 34a and 34b are provided on the back side. Metal contact part 33a and metal piece 34
a is connected by a conducting wire 35a inserted through the insertion hole 30a formed in the plate-shaped portion 30, and the metal contact portion 33b and the metal piece 34b are connected by a conducting wire inserted through the insertion hole 30b formed in the plate-shaped portion 30. 35b.

The bar portion 32 is inserted into the space facing the insulating members 29a and 29b, and a spring 25 is provided so as to surround the bar portion 32. As shown in the figure, the plate portion 30 is located on the right side of the insulating members 29a and 29b, the flange portion 31 is located on the left side, and the spring 25 is
9a, 29b and the plate-shaped portion 30 are contacted by an urging force. The movable portion 24 is supported by the base 23 by the urging force of the spring 25.

A rubber boot 37 is attached to the plate portion 30 and the base portion 23 of the movable portion 24 so that dust and water droplets do not enter between the base portion 23 and the movable portion 24.

When the connector 18 and the connector 19 are connected, the metal contact portions 33a and 33b are
a and 21b in contact with the magnets 26a and 26b.
Is magnetically attached to the magnets 20a and 20b. Here, the spring constant of the spring 25 is determined so that the magnetic attraction between the magnets 26a, 26b and the magnets 20a, 20b is stronger than the urging force of the spring 25. 3 to the left, and a connection state as shown in FIG. 3 is established. In this connection state, the metal members 28a and 28b, the metal pieces 34a and 3
4b, conducting wires 35a, 35b, metal contact portions 33a, 33b
And the conductors 36a, 3 via the metal contact portions 21a, 21b.
Since the conductive wires 6b and the conducting wires 22a and 22b are electrically connected, the voltage adjusted by the operation unit 17 is applied to the piezoelectric element to perform ultrasonic cleaning.

In the connection state of the connectors 18 and 19, the inclined portion 27a is formed in the concave portion 27 so as to leave a space around the plate portion 30, so that the boot 37 is connected to the plate portion 30 in the connection state. Around the metal contact portions 33a, 33b and the metal contact portions 21a, 21b, and the magnets 26a, 26b and the magnet 20.
a, 20b does not hinder magnetic adhesion.

In the ultrasonic dishwasher 11 according to this embodiment, even if the plug 15a is inserted into the outlet while the connector 18 is not connected to the connector 19, the metal member 28 is urged by the spring 25.
a, 28b and the metal pieces 34a, 34b are separated from each other, and no voltage is applied to the metal contact portions 33a, 33b. Therefore, the possibility of a short circuit in the metal contact portions is more reliably eliminated, and extremely high safety is achieved. Is secured.

It should be noted that the present invention is not limited to the above-described embodiment, and for example, the electric appliance may be an electric pot or the like. When the electric appliance is an electric pot as described above, the connector 18 and the connector 19 are generally provided on the power cord 38 and the pot body 39, respectively, as shown in FIG. Power cords.

[0024]

As described above, according to the first aspect of the present invention, even if the plug of the power cord is plugged into the outlet while the movable contact portion is not connected to the fixed contact portion, the movable portion is not moved. Since the power supply voltage is not applied to the second metal contact portion unless is moved against the urging force of the elastic member, the possibility of short-circuit of the metal contact portion is more reliably eliminated, and extremely high safety is secured.

According to the second aspect of the present invention, the above-described effects of the first aspect of the invention can be obtained in an electric appliance.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an ultrasonic dishwasher according to the present invention.

FIG. 2 is an explanatory view showing a power supply connection part of the dishwasher of FIG. 1;

FIG. 3 is an explanatory diagram illustrating a connection state of a power supply connection unit in FIG. 2;

FIG. 4 is a perspective view showing an electric pot according to the present invention.

FIG. 5 is an explanatory diagram showing a conventional power supply connection unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Ultrasonic dishwasher (electric appliance) 12 Control apparatus (supply side apparatus) 13 Cleaning tank (supplied side apparatus) 14 Power supply connection part 18 Connector (movable contact part) 19 Connector (fixed contact part) 20a, 20b Magnet (First fixing means) 21a, 21b Metal contact part (first metal contact part) 23 Base 24 Moving part 25 Spring (elastic member) 26a, 26b Magnet (second fixing means) 33a, 33b Metal contact part (second metal) 38) Power cord (supply-side device) 39 Pot body (supplied-side device)

Claims (2)

[Claims] 1. A power supply connecting portion for detachably connecting a power supply side device and a power supply side device, wherein a fixed contact portion provided on one of the power supply side device or the power supply side device is provided on the other side. The fixed contact portion includes first fixing means and a first metal contact portion, and the movable contact portion is provided with second fixing means fixed to the first fixing means. A base, and a movable portion provided with a second metal contact portion that contacts the first metal contact portion and supported by a biasing force of an elastic member with respect to the base portion, wherein the second metal contact portion is the first metal contact portion. When the second fixing means is fixed to the first fixing means in a state of being in contact with the one metal contact portion, the movable section moves against the base against the urging force, whereby the supply is performed. Side device and the supplied side device become conductive. A power supply connection unit, characterized in that: 2. An electric appliance comprising the power supply connection according to claim 1.