JP2009170149A - Wall-embedded receptacle and plug - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent bending of a plug terminal edge in case of moving an electric apparatus in the state with a plug of a power cord of the electric apparatus inserted into a receptacle. <P>SOLUTION: A wall-embedded receptacle 1 includes: a generally spherical receptacle body 2 chamfered in a rear face part and a surface part; a receptacle receiving portion 3 which movably pinches the receptacle body 2 recessed so as to be adapted into the spherical part of the receptacle body 2; and a curled external power line 4 to transmit an electric power from the outside to the wall-embedded receptacle 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention reduces the stress on the outlet or the plug and prevents the bending of the plug terminal blade even when the electric device is moved with the plug of the power cord of the electric device inserted into the outlet.

Currently, as shown in FIG. 6, a plug is commercially available in which a portion including the plug terminal blade can be rotated in one direction.

However, there is no particular problem when moving electrical equipment in the vertical direction due to the shape of the outlet of the outlet and the direction of rotation of the plug (which is rare in such cases), but when moving in the horizontal direction ( In many cases, horizontal stress may act on the plug terminal blade, and the plug may come off from the outlet, and in extreme cases, the plug terminal blade may be bent.

In particular, there are currently many plug and power cord connection parts that are integrally formed of insulating resin, and the rigidity of the connection parts has become extremely large, which makes the risk of bending the plug terminal blade more serious. ing.

  As described above, there is a demand for an outlet or a plug in which the plug terminal blade does not bend even when the electric device is moved in the horizontal direction.

  The invention according to the present application solves such a problem, and proposes an outlet in which the direction of the insertion port of the plug terminal blade is movable and a plug that is rotatable in two directions.

In other words, in the wall-embedded outlet according to claim 1, the plug terminal blade insertion port is disposed on the outer surface, and the terminal blade gripping metal and the power supply wire electrically connected to the gripping metal are disposed inside. Electrically connected to the power supply line of the socket body, and the socket body that is recessed so as to correspond to the spherical part of the roughly spherical shape, the spherical part of the outlet body, and the outlet body is movably clamped. It consists of a curled external power supply line.

  According to a second aspect of the present invention, there is provided a plug including a plug main body, a portion connected to the plug main body and including a plug terminal blade that is rotatable, and a portion including a power cord that is rotatable in a direction perpendicular to the rotation. It is characterized by the following.

  By carrying out the present invention, even when the electric device is moved in the horizontal direction, the plug terminal blade is not bent, and further, electrical safety is achieved.

Embodiments of the present invention according to the present application will be described below with reference to the drawings.
Example 1

  1 is a front view of a wall-embedded outlet 1, and FIG. 2 is a cross-sectional view of the wall-embedded outlet 1 in a state of being embedded in a wall 23 (a cross-sectional view taken along the line AA ′ in FIG. 1). . As shown in FIG. 2, the wall-embedded outlet 1 corresponds to an approximately spherical outlet body 2 chamfered on the front surface portion and the back surface portion and the spherical portion of the outlet body portion 2 (that is, the outlet body 2). The main part is an outlet receptacle 3 that is recessed (so as to be in surface contact with the portion 2) and movably holds the outlet main body 2 and a curled external power line 4 that transmits power to the wall-embedded outlet 1 from the outside. As a component.

  The outlet body 2 is made of an electrically insulating material, and as shown in FIG. 2, there is an insertion port 5 for inserting a plug terminal blade 20 attached to a power cord of another electric device or the like on the outer surface. A terminal blade gripping part 6 for gripping 20 and a power line 7 are arranged inside. Further, a groove 8 for fitting these elements into the outlet main body 2 or a hole 9 for electrical connection are provided.

  As shown in FIG. 3 (a cross-sectional view of the part at BB ′ in FIG. 1), the outlet body 2 is composed of two members 2a and 2b with the BB ′ cross-sectional part as the upper and lower parts. As shown in FIG. 4 (cross-sectional view taken along the line CC ′ in FIG. 1), the screws 10 are coupled. The outlet body 2 has two screws, but three or more may be used. However, as shown in FIG. 3, it is necessary to arrange the hole 11 through which the screw 10 passes so as to avoid the charged portion, and in order to strengthen the coupling, a longer screw is used as shown in FIG. There is a need to.

  It is necessary to prevent the screw head of the screw 10 from interfering with the movement of the outlet main body 2 and the outlet receptacle 3 due to surface contact. Therefore, a screw head recess 12 is provided so that the screw head does not protrude from the spherical surface portion of the outlet body 2. In order not to increase the resistance when the outlet body 2 is moved, the number of screws is about four, and the area of the recess 12 is reduced, so that the play between the recess 12 and the screw head can be minimized. desirable.

In a state where the power cord plug 21 of another electrical device or the like is connected to the outlet main body 2, stress is applied to the outlet main body 2 vertically and horizontally by the movement of the electrical device. It is necessary to prevent excessive stress from bending the plug terminal sword of the electric device by moving the outlet main body 2 with this stress.

Even if an ordinary electric wire is used as an external power supply line that is wired inside the wall and electrically connected to the outlet, the outlet main body 2 can be moved to some extent if an extra length is given in advance. However, it is better to use the curled external power supply line 4 for smoother movement. As a result, the outlet body 2 can be moved smoothly, and even when the power cord plug 21 of an electric device or the like is removed from the outlet body 2, the elasticity of the curled external power line 4 allows The position of the part 2 naturally returns to the original position.
(Example 2)

  The plug 18 shown in FIG. 5 includes a plug body 13, a rotatable portion 14 including the plug terminal blade 15, and a rotatable portion 17 connected to the power cord 10. The rotation direction of the rotatable portion 17 is set to be perpendicular to that of the rotatable portion 14.

In the power cord 10 of the electric device to which the plug 18 is applied, when the plug 18 is inserted into an outlet embedded in a wall and the electric device is moved, the movable portion 14 can be moved with respect to the vertical movement of the electric device. As a result of the pivoting of the electrical equipment, the pivotable portion 17 pivots to reduce the stress on the terminal blade 15 of the plug 18 and prevent bending of the terminal blade. it can.

The front view of a wall-embedded outlet. The vertical sectional view (A-A 'sectional view) of a wall-embedded outlet. The horizontal sectional view (B-B 'sectional view) of an outlet body part. The vertical sectional view (C-C 'sectional view) of an outlet body part. A plug that can be rotated in both horizontal and vertical directions ((a) is a plan view and (b) is a side view). Conventional plug that can be rotated in the vertical direction ((a) is a plan view, (b) is a side view).

Explanation of symbols

22 Plug power cord 24 Outlet box 25 Cap tie 26 Recess for screw head accommodation to fix outlet receptacle

Claims (2)

An approximately spherical outlet main body disposed on the outer surface of the plug terminal blade insertion port and on the inside of the terminal blade gripping fitting and the power supply wire electrically connected to the gripping fitting;
An outlet receiving portion that is recessed so as to correspond to the spherical portion of the outlet body, and movably holds the outlet body;
A curled external power line electrically connected to the power line of the outlet body,
A wall-embedded outlet characterized by comprising A plug body;
A portion connected to the plug body and including a rotatable plug terminal blade;
A portion including a power cord connected to the plug body and rotatable in a direction perpendicular to the rotation;
A plug characterized by comprising.