JP3101226U - Outlet safety device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety device for an outlet, which prevents an intrusion of a foreign substance from an insertion port, does not cause a consumer to misunderstand that it is a defective product, and has an improved appearance and texture.
SOLUTION: An upper insertion port 12 and a lower insertion port 52 are formed in an upper shell 1 and a lower shell 5 so as to match a conductive terminal A3, and a slide plate 2 is provided with a shielding plate 22 having a horizontal upper surface. The first elastic member 3 urges the slide body 2 in the width direction so that the shielding plate 22 matches the upper insertion port 12, and the lower surface of the slide body 2 is interposed between the shielding plates 22 by the second elastic member 4. It is supported and urged upward, and the protrusion 21 is provided on the slide body 2, the guide piece 53 is provided on the lower shell 5, and the guide piece 53 is brought into contact with the protrusion 21 when the slide body 2 moves downward in parallel. In contact therewith, an inclined surface 54 is provided to guide the shield plate 22 in the width direction so as to come off the upper insertion hole 12.
[Selection diagram] Fig. 4

Description

  The present invention relates to an outlet safety device for preventing a foreign object from entering an outlet and an electric shock accident.

General wall outlets and extension outlets have one or more sets of two or three sets of outlets, but these outlets are open, so that infants etc. can remove foreign objects from curiosity. It is easy to cause an electric shock accident by inserting it into the outlet.
In addition, a conductive terminal made of a copper material is installed inside the insertion port. If the conductive terminal is exposed to the air for a long time, the conductive efficiency is adversely affected by oxidation of copper and volume of dust.
Therefore, conventional outlets have a potential danger and are not ideal.

In view of this, there has been proposed a safe outlet that prevents foreign substances from entering the insertion port (see Patent Document 1).
As shown in FIG. 8, this outlet is provided with a cover body D1 movable in the width direction inside a shell D of the outlet, and the cover body D1 is provided with an insertion port D3 with the movement thereof. A pair of shielding pieces D2 that open and close the lower part are provided. The cover body D1 is urged in a direction in which the shielding piece D2 shields the insertion port D3.
When the blade B1 of the plug B is inserted into the insertion port D3, the slopes of the left and right shielding pieces D2 are uniformly pressed and moved by the tip of the blade B1, and the entire cover body D1 moves in the width direction and passes through the blade B1. Therefore, the plug B can be completely inserted, and the tip of the blade B1 can be connected to the conductive piece D4 installed at the back of the insertion port D3.

On the other hand, as shown in FIG. 9, when the foreign matter C is inserted into one of the insertion holes D3, the foreign matter C acts only on one of the shielding pieces D2 of the cover body D1, so that the cover body D1 rotates like a lever. The other shielding piece D2 is lifted upward, so that the cover body D1 cannot move in the width direction, the insertion port D3 remains shielded, and the foreign matter C enters further. Can not.
However, in this outlet, although the effect of avoiding the danger caused by the invasion of foreign matter is sufficiently obtained, since the shielding piece D2 of the cover body D1 is disposed below the insertion port D3, the consumer can avoid the outside of the shell D. When looking at the insertion port D3 from above, the inclined shielding piece D2 is seen, and depending on the inclined state, there is a possibility of misunderstanding that the cover body D1 is not properly attached.

US Pat. No. 6,537,088

  The problem to be solved by the present invention is to prevent foreign substances from entering through the insertion port, avoid the volume of dust on the conductive terminals and prevent the occurrence of electric shock accidents, and consumers may misunderstand that they are defective. It is an object of the present invention to provide an outlet safety device with an improved appearance and texture.

  The safety device for an outlet according to the present invention includes an upper shell, a slide, a first elastic member, a second elastic member, and a lower shell, wherein the upper shell has a pair of a pair of members installed in the outlet. A pair of upper insertion holes located above the conductive terminals are bored, and the slide body is installed below the upper shell so as to be movable in the width direction and the up and down direction, and is provided on the upper shell. The first elastic member biases the slide body in the width direction so that the shield plate coincides with the upper insertion port. The second elastic member supports a lower surface of the slide body between the pair of shielding plates and urges the slide body upward, and the lower shell body is configured to have the upper shell below the slide body. A pair attached to the body and corresponding to the upper outlet and conductive terminal It has a lower insertion port, a projection is formed on one of the slide body and the lower shell body, and a guide piece is provided on the other of the slide body and the lower shell body. And a slope that guides in the width direction so that the shielding plate of the slide body comes off the upper insertion hole when the projection moves in parallel to the projection.

According to the present invention, when the blade of the plug is inserted into the upper insertion port, the slide body can move to connect the conductive terminal and the blade, but foreign matter is only present in one of the upper insertion ports. When it enters, the shielded state by the shield plate is maintained and the intrusion of foreign matter is reliably prevented, so that the deterioration of the conductive efficiency due to the volume of dust and the occurrence of an electric shock accident can be prevented.
Further, since the upper surface of the shielding plate seen through the upper insertion port is a horizontal surface, the appearance is good, and there is no possibility that the consumer may mistakenly think that the assembly is defective.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 to 6 show a first embodiment of the present invention.
As shown in FIGS. 1 and 2, the outlet safety device includes an upper shell 1, a slide 2, a first elastic member 3, a second elastic member 4, and a lower shell 5.
The upper shell 1 forms an outer shell together with the lower shell 5 and has a box shape with an open lower surface. Fitting projections 11 for assembling with the lower shell 5 are provided on both sides of the lower surface of the upper shell 1, and a pair of left and right upper insertion ports 12 are formed near both sides of the top of the upper shell 1.
Further, on the lower surface of the upper shell 5, a support piece 13 protruding downward is provided between the left and right upper insertion ports 12, and a positioning piece protruding downward outside one of the upper insertion ports 12. 14 are provided.

The slide body 2 has a central portion formed of a hollow, substantially rectangular frame, is installed inside the upper shell 1 so as to be movable in the width direction and the vertical direction, and has a support piece 13 of the upper shell 1 at the center. Is inserted.
At the middle part of the front and rear frames of the slide 2, projections 21 protruding toward the center are provided so as to face each other, and one of the left and right frames of the slide 2 is provided with a column 23 toward the center. To protrude. Then, the slide body 2 is installed in the upper shell body 2 such that the tip of the column body 23 faces the support piece 13.
Further, a pair of shielding plates 22 corresponding to the pair of upper insertion ports 12 of the upper shell 1 are provided on both left and right sides of the upper surface of the slide body 2. The upper surface of the shielding plate 22 is a horizontal plane.

The first elastic member 3 is composed of a coil spring, one end of which is engaged with the column 23 of the slide body 2 and the other end of which is in contact with the support piece 13 of the upper shell 1 to shield the slide body 2 from its shield. The plate 22 urges the upper shell 1 in a direction matching the upper insertion port 12.
The second elastic member 4 has a pair of front and rear elastic ends 41, and an end opposite to the elastic end 41 is locked to the positioning piece 14 of the upper shell 1. The elastic end portion 41 supports the lower surfaces of the front and rear frames of the slide body 2 between the left and right shielding plates 22 and urges the slide body 2 upward.
In this manner, when the slide body 2 is urged in the width direction by the first elastic member 3 and urged upward by the second elastic member 4, the shielding plate 22 of the slide body 2 is normally raised from below. It is inserted into the insertion port 12.

The lower shell 5 is mounted on the lower surface of the upper shell 1 by an appropriate means such as fitting, screwing, ultrasonic bonding, or the like, and through holes on both sides thereof engage with the fitting projections 11 of the upper shell 1. 51.
In addition, a pair of lower outlets 52 are formed at positions corresponding to the upper outlets 12 of the upper shell 1 near both sides of the lower shell 5, and between the left and right lower outlets 52, Guide pieces 53 are erected on the front and rear portions of the upper surface of the lower shell 5 respectively.
One side surface of the guide piece 53 (a side surface closer to the support piece 13) is a slope 54 that is inclined so as to approach the support piece 13 downward. The guide piece 53 is located below the slide body 2 in a normal state (in a state where the slide body 2 is raised), and when the slide body 2 is lowered, the position and the height at which the protrusion 21 comes into contact with the slope 54. Formed.
Further, a support protrusion 55 that supports the first elastic member 3 from below is provided between the front and rear guide pieces 53 at a position facing the side surface of the support piece 13.

As shown in FIGS. 3 to 6, the safety device is fitted and fixed in a fixing hole A1 formed in the center of the upper surface of the outlet A, and is mounted on a seat A2 provided inside the outlet A. . Then, the upper socket 12 of the upper shell 1 and the lower socket 52 of the lower shell 5 are arranged above the conductive terminal A3 installed in the seat A2 of the outlet A.
As shown in FIG. 3, when the blade B1 of the plug B is inserted into the pair of upper insertion ports 12, the left and right shielding plates 22 are simultaneously pushed downward and come out of the upper insertion port 12, and the slide body 2 is in the second position. The projection 21 of the slide body 2 comes into contact with the slope 54 of the guide piece 53 by moving downward in parallel against the bias of the second elastic member 4.

As shown in FIG. 4, when the blade B <b> 1 of the plug B enters further deeply, the slide body 2 continues to descend, and the protrusion 21 slides along the slope 54 of the guide piece 53. As a result, the slide body 2 moves in the width direction so as to approach the support piece 13 while compressing the first elastic member 3 against the bias of the first elastic member 3.
Then, as shown in FIG. 5, when the shielding plate 22 is completely moved to a position separated from the upper insertion port 12, the blade B <b> 1 of the plug B passes through the lower insertion port 52 of the lower shell 5 and the conductive terminal of the outlet A. It is inserted into A3 and becomes conductive.

The first elastic member 3 descends while being compressed as the slide body 2 descends. However, since the first elastic member 3 is supported from below by the support protrusion 55 of the lower shell 5, the first elastic member 3 does not fall off from the support piece 13 due to deformation.
When the blade B1 of the plug B is removed, the slide body 2 is pushed by the first elastic member 3 and moves in the width direction so as to move away from the support piece 13, and is pushed by the second elastic member 4 to rise, After returning to the original position, the shielding plate 22 shields the upper insertion port 12 again.

As shown in FIG. 6, when the foreign matter C is inserted into the one upper insertion port 12, only the one shielding plate 22 is pushed downward by the foreign matter C. The shield plate 22 rotates around the portion supported by the elastic end portion 41, and the other shield plate 22 is pushed upward to maintain the state of being inserted into the upper insertion port 12.
Therefore, the slide body 2 cannot move in the width direction, and the lower part of the upper insertion hole 12 in which the foreign matter C has entered is blocked by the shielding plate 22, so that the foreign matter C passes through the lower insertion hole 52 and becomes conductive. Terminal A3 cannot be reached.

FIG. 7 shows a second embodiment of the present invention.
A guide piece 24 is provided in the widthwise middle portion of the lower surface of the slide body 2, and the side surface of the guide piece 24 on the column 23 side is a slope 25 that is inclined so as to approach the support piece 13 downward.
Further, a projection 56 is formed in the widthwise middle portion of the upper surface of the lower shell 5 so as to come into contact with the slope 25 of the guide piece 24 when the slide body 2 moves downward in parallel. When the slide 2 continues to descend, the slope 25 of the guide piece 24 formed on the slide 2 and the projection 56 of the lower shell 5 relatively slide, and the slide 2 moves in the width direction. The upper insertion port 12 is opened.
Other configurations and methods of use are substantially the same as those of the first embodiment, and therefore, the same portions are denoted by the same reference numerals and detailed description thereof will be omitted.
The shapes of the upper shell and the lower shell are not particularly limited as long as they have a space in which the slide body, the first elastic member, and the second elastic member can be stored. The upper surface of the lower shell may be closed with the upper shell having a box shape with an open upper surface.

FIG. 2 is an exploded perspective view of the outlet safety device according to the first embodiment. 1 is a cross-sectional view of a safety device for an outlet according to a first embodiment. FIG. 4 is a cross-sectional view showing a first stage of an operation process when the outlet and the safety device according to the first embodiment are plugged in. FIG. 6 is a sectional view showing a second stage of the operation process of the outlet and the safety device according to the first embodiment when the plug is inserted. FIG. 5 is a sectional view showing a third stage of the operation process of the outlet and the safety device according to the first embodiment when the plug is inserted. FIG. 4 is a cross-sectional view illustrating an operation process of the outlet and the safety device according to the first embodiment when a foreign object enters. Sectional drawing of the safety device of the outlet which shows Example 2. Sectional drawing at the time of plug insertion of the conventional outlet. Sectional drawing at the time of a foreign substance invasion of the conventional outlet.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Upper shell 11 Fitting protrusion 12 Upper insertion hole 13 Supporting piece 14 Positioning piece 2 Slide body 21 Projecting part 22 Shielding plate 23 Column 24 Guide piece 25 Slope 3 First elastic member 4 Second elastic member 41 Elasticity End 5 Lower shell 51 Through hole 52 Lower insertion port 53 Guide piece 54 Slope 55 Support protrusion 26 Projection A Outlet A1 Fixing hole A2 Seat A3 Conductive terminal B Plug B1 Blade C Foreign matter

Claims (1)

A safety device mounted on an outlet, comprising: an upper shell, a slide, a first elastic member, a second elastic member, and a lower shell, wherein the upper shell is installed in the outlet. A pair of upper insertion ports located above the pair of conductive terminals are formed, and the slide body is installed below the upper shell body so as to be movable in a width direction and a vertical direction, and the upper shell body is provided. And a pair of shielding plates whose upper surface is a horizontal plane, wherein the first elastic member attaches the slide body in the width direction so that the shielding plate coincides with the upper insertion port. Urged, the second elastic member supports the lower surface of the slide body between the pair of shielding plates and urges the slide body upward, and the lower shell body is disposed below the slide body under the slide body. Attached to the upper shell, and compatible with the upper outlet and conductive terminal A pair of lower insertion holes, a projection is formed on one of the slide body and the lower shell, and a guide piece is provided on the other of the slide body and the lower shell, and the guide piece is provided on the slide. An outlet safety device having an inclined surface that guides in the width direction such that the shielding plate of the slide body comes off the upper insertion hole when the body moves downward in parallel to the protrusion.

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