JP3101341U - Elastic parts for outlet safety cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elastic part for a safety cover of an outlet, which has a simple structure, is easy to assemble, reliably prevents intrusion of dust or foreign matter, and enables the shielding effect of an outlet to be checked at a glance.
An elastic part (1) installed below an outlet of an outlet to support a safety cover that opens and closes the outlet according to vertical and horizontal movements and that is restricted from moving when it swings. A vertical elastic piece 11, a horizontal elastic piece 12, and a fixed piece 13. The vertical elastic piece 11 supports a middle portion of the lower surface of the safety cover and serves as a fulcrum of swinging, and the safety cover faces the insertion port. The horizontal elastic piece 12 urges the safety cover in the horizontal direction just below the insertion port, and the fixing piece 13 is fixed to the outlet.
[Selection diagram] Fig. 1

Description

  The present invention relates to a resilient component for a safety cover of an outlet, which is movably mounted on the outlet and provides a restoring force for returning to an original position to a safety cover for shielding an insertion port when a plug is not inserted.

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, an outlet has been proposed in which a movable cover body is installed inside to shield the insertion port (see Patent Document 1).
As shown in FIG. 7, 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. 8, when foreign matter C is inserted into one insertion port D3, foreign matter C acts only on one shielding piece D2 of cover body D1, so that 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 case, since the cover body D1 cannot be moved vertically downward and can only be moved in the width direction, the shielding piece D2 is inserted into the insertion port D3 to move the cover body D1 in the width direction. You can't regulate. That is, in a normal state, the shielding piece D2 shields the area below the insertion port D3. For this reason, it is impossible to completely prevent dust and the like from entering the inside of the outlet, and the shielding effect of the insertion port D3 is not clear from the appearance.

US Pat. No. 6,537,088

  The problem to be solved by the present invention is to provide horizontal and vertical resilience to the safety cover, swingably support the safety cover at an intermediate portion thereof, and have a simple structure, easy assembly, and an outlet. An object of the present invention is to provide an elastic part for a safety cover of an outlet, which can surely prevent intrusion of dust into the inside and can confirm at a glance the effect of shielding the insertion port.

The resilient part for the safety cover of the outlet of the present invention is installed below the pair of outlets formed in the outlet so as to be movable vertically and horizontally, and opens and closes the outlet according to the vertical and horizontal movement. And a resilient part for supporting a safety cover whose movement is restricted when it swings, comprising a vertical elastic piece, a horizontal elastic piece, and a fixed piece, wherein the vertical elastic piece supports a lower intermediate portion of the safety cover. As a fulcrum of swinging, the safety cover is urged upward toward the insertion port, and the horizontal elastic piece attaches the safety cover in a horizontal direction directly below the insertion port. The fixing piece is provided outside the working range of the vertical elastic piece and the horizontal elastic piece with respect to the safety cover, and is fixed to the outlet.
The fixing piece may stand upright, and an inclined piece anchored to the outlet may be formed on the fixing piece.

According to the invention of claim 1, since the safety cover is moved in the vertical and horizontal directions to open and close the outlet of the outlet, it is possible to completely cover the outlet with the safety cover in a normal state. In addition to reliably preventing intrusion of dust, etc., the shielding effect on the insertion port can be checked at a glance.If a foreign object is inserted into one of the insertion ports, the safety cover swings and horizontal movement is restricted. Therefore, invasion of foreign matter can be prevented.
In addition, since the safety cover is supported by one elastic component and urged in the vertical and horizontal directions, the structure can be simple and easily assembled.
According to the invention of claim 2, the elastic component can be firmly attached to the outlet.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the elastic part 1 of the present invention is made of an elastic metal plate and includes a vertical elastic piece 11, a horizontal elastic piece 12 and a fixed piece 13.
The vertical elastic piece 11 constitutes the bottom of the elastic component 1, and has one end in the width direction curved upward in a gentle arc shape, and the tip is branched back and forth to form a pair of fulcrum portions 112. . The fulcrum portion 112 is curved upwardly convex, and a notch 111 is formed between the pair of fulcrum portions 112 so that the fulcrum portion 112 can swing vertically.

The horizontal elastic piece 12 is erected substantially vertically above the bottom of the vertical elastic piece 11 in the front-rear direction, and a fixed end 121 formed at one end of the horizontal elastic piece 12 is located behind the vertical elastic piece 11. Fixed to the rim.
Further, the horizontal elastic piece 12 gradually extends from the fixed end 121 toward the other end so as to approach the fulcrum 112 of the vertical elastic piece 11, and the other end of the horizontal elastic piece 12 has a fulcrum part. A pressing portion 122 that is convexly curved in the 112 direction is formed.
Further, the portion of the horizontal elastic piece 12 excluding the fixed end 121 is separated from the vertical elastic piece 11 so that the pressing portion 122 can swing in the horizontal direction. That is, the action direction of the horizontal elastic piece 12 is orthogonal to the action direction of the vertical elastic piece 11.

The fixing piece 13 is a member for fixing the elastic component 1 to the outlet, and stands up at the other end of the vertical elastic piece 11 substantially vertically so as not to hinder the swing of the fulcrum 112 and the horizontal elastic piece 12 ( Outside the working range of the vertical elastic piece 11 and the horizontal elastic piece 12).
Further, the fixed piece 13 is formed with an inclined piece 131 cut and raised so as to obliquely project outward from the upper end toward the lower end.

The outlet into which the elastic component 1 is incorporated includes an outer shell 2, an inner shell 3, and a safety cover 4, as shown in FIG.
The outer shell 2 is formed in a box shape by engaging the upper shell 21 and the lower shell 22, and a pair of insertion holes 211 is formed in a top portion of the upper shell 21.
As shown in FIGS. 2 and 4, a positioning piece 213 that sandwiches the safety cover 4 from the front and rear sides is formed at the upper end of the front and rear inner surfaces of the upper shell 21.
Further, as shown in FIGS. 2 and 3, a position facing the outside of one of the insertion ports 211 near one side of the lower surface of the top portion of the upper shell body 21 determines a position of the safety cover 4 in a normal state. A contact piece 214 is provided, and a fitting piece 212 having a slit facing upward from the lower end face is provided near the other side of the lower surface of the top portion of the upper shell 21.

The inner shell 3 is housed in the lower shell 22 and protrudes into the upper shell 21 so that a space 5 is formed between the upper shell 21 and the top.
In addition, a pair of conductive terminals 31 is installed in the inner space of the inner shell 3 immediately below the insertion port 211 of the outer shell 2, and from a top surface of the inner shell 3 at a position corresponding to the insertion port 211. An inner insertion port 32 reaching the inner space is formed.
Then, the elastic part 1 is placed on the upper surface of the inner shell 3 with its fulcrum 112 facing the contact piece 214 of the upper shell 21, and the fixing piece 13 of the elastic part 1 is fitted together with the inclined piece 131 with the fitting piece. The elastic part 1 is fixed by engaging with the slit 212. Since the inclined piece 131 of the fixed piece 13 is anchored to the inner surface of the slit to prevent it from falling off, the elastic part 1 is firmly attached and does not fall off.

The safety cover 4 is installed in the space 5 formed between the inner shell 3 and the outer shell 2 below the insertion port 211 of the upper shell 21 so as to be vertically and horizontally movable.
A pair of protrusions 41 is provided on both sides of the upper surface of the safety cover 4 so as to be removably engaged with the insertion port 211. The upper surface of the protrusion 41 is a slope 411 that is inclined so that the contact piece 214 side is lower.
Further, an insertion opening 42 is formed in the safety cover 4 at a position adjacent to the inside of the projection 41 near the fitting piece 212.

The safety cover 4 is disposed at a position surrounded by the positioning piece 213, the fitting piece 212 and the contact piece 214 in the space 5. The elastic piece 12 is in contact with the side surface of the safety cover 4.
Then, the horizontal elastic piece 12 urges the safety cover 4 in the horizontal direction so that the safety cover 4 comes into contact with the contact piece 214 so that the projection 41 is located immediately below the insertion port 211, and the fulcrum 112 of the vertical elastic piece 11 The safety cover 4 is urged vertically upward.
As shown in FIGS. 3 and 4, the safety cover 4 abuts on the abutment piece 214 of the upper shell 21, and the projection 41 is inserted into the insertion port 211 to shield the insertion port 211. ing.

When the safety cover 4 moves downward in the vertical direction, the vertical elastic piece 11 of the elastic part 1 is deformed, and a restoring force for pushing the safety cover 4 back is obtained. When it moves horizontally in the direction away from it, the horizontal elastic piece 12 of the elastic part 1 is deformed, and a restoring force for pushing the safety cover 4 back toward the contact piece 214 is obtained.
Also, the trajectory of the safety cover 4 at the time of movement is restricted by the positioning piece 213, and moves without changing its posture.
When pressure is applied only to one of the protrusions 41 of the safety cover 4, the safety cover 4 swings around the fulcrum 112 of the vertical elastic piece 11 as a fulcrum.

As shown in FIG. 5, when the blade 61 of the plug 6 is inserted into the pair of insertion ports 211, the pair of projections 41 are simultaneously pushed downward and come out of the insertion port 211, and the safety cover 4 is attached to the vertical elastic piece. It moves downward while deforming it against the bias of 11.
Then, the blade 61 of the plug 6 and the slope 411 at the upper end of the protrusion 41 slide relatively to generate a horizontal thrust, and the safety cover 4 deforms against the bias of the horizontal elastic piece 12. While moving, it moves in the horizontal direction so as to approach the fixed piece 13.
Eventually, when the protrusion 41 moves to a position where it is completely removed from the insertion port 211, the blade 61 of the plug 6 is moved through the insertion port 42 of the safety cover 4 and the inner insertion port 32 of the inner shell 3. 31 and becomes conductive.

As shown in FIG. 6, when a foreign object is inserted into one of the insertion ports 211, only the one protrusion 41 is pushed downward by the foreign object, so that the safety cover 4 is supported by the fulcrum 112 of the vertical elastic piece 11. The other projection 41 is pushed upward and kept inserted in the insertion port 211.
Therefore, the safety cover 4 cannot move in the horizontal direction, and the lower part of the insertion port 211 into which the foreign matter has entered is blocked by the protrusion 41, so that the foreign matter passes through the inner insertion port 32 and reaches the conductive terminal 31. Can not reach.

Note that the vertical elastic piece 11, the horizontal elastic piece 12, and the fixed piece 13 of the elastic part 1 may be formed independently, and then integrated by appropriate means such as welding, rivets, fitting, or the like.
The shapes of the vertical elastic piece 11, the horizontal elastic piece 12, and the fixed piece 13 can be appropriately changed as long as they perform the same function.

1 is a perspective view of a resilient part for a safety cover of an outlet showing an embodiment of the present invention. FIG. 2 is an exploded perspective view of the outlet according to the present invention. FIG. 3 is a vertical sectional view of the outlet according to the present invention in a normal state. FIG. 4 is a cross-sectional view of the outlet according to the present invention in a normal state. The longitudinal section at the time of plug insertion of the outlet concerning the present invention. FIG. 3 is a vertical cross-sectional view of the outlet according to the present invention when foreign matter enters. The longitudinal section at the time of plug insertion of the conventional outlet. FIG. 6 is a vertical cross-sectional view of a conventional outlet when foreign matter enters.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Elastic component 11 Vertical elastic piece 111 Notch part 112 Support point part 12 Horizontal elastic piece 121 Fixed end part 122 Pressing part 13 Fixed piece 131 Inclined piece 2 Outer shell 21 Upper shell 211 Insert port 212 Fitting piece 213 Positioning piece 214 Contact piece 3 Inner shell 31 Conductive terminal 32 Inner outlet 4 Safety cover 41 Projection 411 Slope 42 Insertion port 5 Space 6 Plug 61 Blade

Claims (2)

  It is installed below a pair of outlets formed in the outlet so that it can move vertically and horizontally, and opens and closes the outlet with vertical and horizontal movement, and the movement is restricted when it swings. A resilient part for supporting the cover, comprising a vertical elastic piece, a horizontal elastic piece, and a fixed piece, wherein the vertical elastic piece supports a lower intermediate portion of the safety cover and serves as a fulcrum of swinging, and The cover is urged upward toward the insertion port, the horizontal elastic piece urges the safety cover horizontally just below the insertion port, and the fixed piece is the vertical elastic piece. And a resilient part for a safety cover of an outlet, wherein the resilient part is provided outside a working range of the horizontal elastic piece with respect to the safety cover and is fixed to the outlet. The elastic part for a safety cover of an outlet according to claim 1, wherein the fixing piece stands upright, and an inclined piece is formed on the fixing piece to be anchored to the outlet.

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