JP4548781B2 - Outlet - Google Patents

Description

  The present invention relates to an outlet provided with a switch for detecting and shutting off an abnormality in an electric circuit.

  Conventional outlets equipped with a switch that shuts off the power supply to the receiving blade for connecting the plug blade of the power plug in the event of an abnormality in the electrical circuit are available with either a rotary handle or a push button. It was. When the operation part of the switch is a rotary handle, it is provided so as to protrude from the surface of the case regardless of whether the handle is in an on position or an off position, so that the switch can be turned on and off at any time (for example, Patent Document 1). In addition, when the operation part of the switch is a push button, the push button is provided so as to be substantially flush with the surface of the case at the on position and protrude from the surface of the case at the off position, and can be turned on manually. The off operation cannot be performed (for example, refer to Patent Document 2).

Japanese Patent Laid-Open No. 2000-231965 (FIG. 2) Japanese Patent Laid-Open No. 10-144409 (FIG. 6)

  A switch that shuts off when an abnormality occurs in the electric circuit is not recommended to be manually turned off because the switching contact and the switching mechanism are consumed when the breaking operation is performed. It was not preferable because a thing or a person could come in contact and be turned off unnecessarily. However, in the case of a rotary handle, there is a drawback that it looks bad because the handle protrudes from the surface of the case in both the on position and the off position. In addition, the push button type switch cannot be turned off, and it looks good because it is almost flush with the surface of the case at the on position, but the structure of the opening and closing mechanism is complicated, so there is a disadvantage that it is expensive. there were.

  According to the first aspect of the present invention, there is provided a switch for shutting off the power supply to the receiving blade for connecting the plug blade of the power plug when an abnormality occurs in the electric circuit, and the rotation for operating the switch. In the outlet that exposes the handle of the type on the surface of the case, the handle is substantially flush with the surface of the case when turned on, protrudes from the surface of the case when turned off, and cannot be manually turned off when the handle is turned on It is characterized by reducing the gap with the case.

  According to a second aspect of the present invention, the outlet according to the first aspect further includes a test circuit that generates a pseudo abnormality in the electric circuit.

  According to a third aspect of the present invention, in the outlet according to the first or second aspect, even when the handle is constrained in the on position, the switch is cut off when an electric circuit abnormality occurs. And

  According to the first aspect of the present invention, it is possible to prevent the handle from being turned off unnecessarily by using the switch of the rotary handle that can be manufactured at a low cost, and to improve the appearance during normal use. There is an effect that can be done.

  According to the second aspect of the present invention, it is possible to confirm whether or not the switch operates normally, and there is an effect that it can be used when it is desired to turn off the handle.

  According to the third aspect of the present invention, there is an effect that the load device can be protected from the abnormality of the electric circuit even when there is an obstacle on the front surface of the handle of the outlet.

  In the outlet comprising a switch that cuts off the power supply to the receiving blade for connecting the plug blade of the power plug when an abnormality occurs in the electric circuit, and the rotary handle for operating the switch is exposed on the surface of the case, When the handle is turned on, the display surface of the operation unit is substantially flush with the surface of the case. When the handle is turned off, the operation unit protrudes from the surface of the case. Reduce the gap between the surface and the wall surface of the recess of the case.

  A first embodiment of the outlet according to the present invention will be described with reference to the accompanying drawings of FIGS.

  The outlet 1 is provided with a pair of plug blade insertion ports 3 into which a plug blade (not shown) of a power plug is inserted on the front surface of a resin case 2 formed in a rectangular parallelepiped shape at two locations, the center and the bottom. A receiving blade (not shown) for connecting the plug blade of the power plug is disposed inside the plug blade insertion port 3. The two receiving blades are supplied with power through wiring (not shown) connected to the back surface of the case 2.

  In addition, a switch for protecting the electric circuit from abnormalities such as tracking and electric leakage when power is supplied to the receiving blade is provided on the upper portion of the case 2, and the switch handle 5 is exposed vertically on the front surface of the case 2. It is provided rotatably. The handle 5 includes a circular portion 5b having a shaft portion 5a that is pivotally supported, and an operation portion 5c extending on a tangent line of the circular portion 5b. The operation portion 5c is provided with an indication "ON" on the surface thereof, and the operation portion 5c is provided so as to fit into the recess 2b of the case 2 so that the display surface 5d is substantially flush with the surface 2a of the case 2. The gap between the outer peripheral surface of the operation portion 5c and the wall surface of the recess 2b of the case 2 is reduced in the on position.

  The outlet 1 thus formed is used with the handle 5 of the switch turned on, and when it is turned on, the operation portion 5c of the handle 5 is substantially flush with the case surface 2a, so that it looks good. Further, since the gap between the operation portion 5c of the handle 5 and the case 2 is small, a finger cannot enter and an unnecessary off operation cannot be performed.

  And a switch will carry out interruption | blocking operation, if abnormality of an electric circuit is detected. When the blocking operation is performed, the handle 5 rotates in the direction of the arrow in FIG. 2 and the operation portion 5c protrudes from the case surface 2a as indicated by a broken line. For this reason, it is possible to visually confirm that the switch is turned off. Even if the handle 5 is restrained at the ON position, the switch is cut off when an abnormality occurs in the electric circuit. Therefore, even if there is an obstacle on the front surface of the handle 5, the load connected to the outlet 1 due to the abnormality in the electric circuit. Equipment can be protected. In addition, a test circuit (not shown) that artificially generates an abnormality in the electric circuit is provided, and the test button 6 of the test circuit is provided so as not to protrude from the surface 2 a of the case 2. When the test button 6 is pressed, a pseudo abnormality occurs in the electric circuit, and the switch detects this and performs a blocking operation. Thus, it can be confirmed whether or not the switch operates normally, and can also be used when the handle 5 is to be turned off.

  After the handle 5 is turned off, after removing the cause of the abnormality, the operation portion 5c of the handle 5 is rotated so as to be pushed into the concave portion 2b of the case 2, and the switch is turned on to return.

It is a front view which shows the outlet socket which concerns on this invention. It is the right view which fractured | ruptured the principal part which shows the outlet socket which concerns on this invention.

Explanation of symbols

2 Case 2a Case surface 2b Recessed portion 5 Handle 5a Shaft portion 5b Circular portion 5c Operation portion 5d Display surface

Claims (3)

  In an outlet comprising a switch for shutting off the power supply to the receiving blade for connecting the plug blade of the power plug when an abnormality occurs in the electric circuit, and a rotating handle for operating the switch exposed on the surface of the case The handle is substantially flush with the surface of the case when it is on, protrudes from the surface of the case when it is off, and has a small gap with the case so that it cannot be manually turned off when the handle is on. Outlet.   The outlet according to claim 1, further comprising a test circuit that artificially generates an abnormality in the electric circuit.   The outlet according to claim 1 or 2, wherein the switch is cut off when an abnormality occurs in an electric circuit even when the handle is restrained at an on position.

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