JP2000030790A - Power source connecting equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power source connecting equipment such as an outlet, etc., preventing heat generation and ignition caused even when dust piles on it. SOLUTION: When an AC adapter 14 is put in a second area 22, of a cap 21 of an exposed square triple outlet, in an inclined state forming a clearance gap in the upper part, then comparatively massive dust 19 piles up on it as time goes by. A second movable member 32 is mounted to the cap 21 so as to move back and forth, and it blocks the upper part of the clearance gap. Thereby, the dust is prevented from piling up on the place where a pair of plug blades 14A of the AC adapter 14 exists. This eliminates the risk of electrification of the dust and sparkling between the pair of plug blades 14A or between second plug blade sockets.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply connection device for connecting to a power supply such as an outlet of a commercial power supply, a power tap branch adapter or an AC adapter, and more particularly to a power supply connection for preventing deterioration of insulation. Equipment related.

[0002]

2. Description of the Related Art Power supply connecting devices such as a commercial power outlet, a power tap branch adapter, and an AC adapter are widely used in offices and homes.

FIG. 17 shows a state in which an AC adapter is attached to an outlet buried in a wall of a house. An outlet 12 is embedded in a predetermined position of the wall 11, and a plate member 13 is attached to a surface of the outlet 11 so that the inside of the outlet 12 is not exposed.
In this example, an AC adapter 14 is inserted into the outlet 12. The AC adapter 14 is used, for example, to perform conversion for supplying DC power to a telephone (not shown).

The AC adapter 14 is ideally mounted so that the surface facing the plate member 13 is brought into close contact with the entire surface of the plate member 13.
However, due to the weight of the AC adapter 14 to be inserted into the outlet 12 and the difficulty of the operation when mounting the furniture using the gap of the furniture, the gap 16 is still formed at the top as shown in the figure. Installation often ends. In many cases, the power connection devices such as the AC adapter 14 and the outlet 12 will be maintained for many years from then on. In particular, if furniture such as a chest is returned to the position before installation after the power supply connection device is attached, the power supply connection device is left without being cleaned, and dust and dirt accumulate. Will be.

[0005]

Generally, dust and dirt floating in the air fall on the plate member 13 or the surface of the wall as shown by an arrow 17 and fall along the surface as shown by an arrow 18. As a result, a relatively large amount of dust and dirt 19 accumulates on the upper part of the AC adapter 14 including the stepped portion and the gap 16 on the plate member 13. The dust or dust 19 thus deposited becomes conductive when replenished with water due to dew condensation on the wall 11 or the like.
As a result, a small spark is generated, for example, between the pair of blades 14A of the AC adapter 14 (only the front blade is shown in the figure) and between the poles of the outlet 12. When a spark occurs, this corresponding portion of the power supply connection device is heated and its insulating material gradually carbonizes. As a result, a large current eventually flows through the material forming the poles of the power supply connection device, and this portion generates heat and eventually ignites.

[0006] As described above, dust and dirt accumulate in gaps between power supply connected devices, and when moisture is added to the gaps, conduction between power supply terminals occurs. In some cases, there is a problem that a fire may occur.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power supply connecting device capable of preventing heat and ignition caused by dust and dirt even when the dust accumulates in the surroundings.

[0008]

According to a first aspect of the present invention, there is provided a power supply connecting device, wherein a plane on which a pair of terminals connected to a power supply line is planted or a pair of terminal receivers for receiving the pair of terminals are arranged. In a predetermined region located between the pair of terminals or the pair of terminal receivers described above,
Projects from this plane by a predetermined distance in a non-pressed state, retreats to the same plane as this plane according to the pressed state, and when protruding, moves from any position corresponding to one of the pair of terminals or the pair of terminal receivers on the plane to the other. The invention is characterized in that a blocking movable member having a width sufficient to make it impossible to see a position corresponding to a part is arranged.

That is, according to the first aspect of the present invention, the plane on which the pair of terminals connected to the power supply line are planted and the plane on which the pair of terminal receivers for receiving the pair of terminals are arranged are not connected to each other. At this time, in order to prevent dust and dirt from entering the gap to generate a spark, a shut-off type movable member for shutting off dust and dirt is arranged between the pair of terminals or the pair of terminal receivers. . The blocking movable member protrudes from the above-mentioned plane by a predetermined distance in a state where it is not pressed, and can be retracted to the same plane as this plane according to the pressing state. This is because the plane on which the pair of terminals are planted and the plane on which the pair of terminal receivers for receiving the pair of terminals are arranged should ideally be in close contact with each other. In addition, since the cut-off movable member retreats in accordance with the pressing state, even when the power connection device is inclined or connected at an interval, the cut-off movable member changes the amount of protrusion in accordance with this, and removes dust and dirt. Can be shut off. Of course, if the space between the two power supply connection devices is too wide, power supply becomes impossible, and such a situation can be discovered. Not be. According to the first aspect of the present invention, in a state where power supply is performed without any problem, the situation where dust and dust are bad is eliminated, and the maximum amount of protrusion of the shut-off movable member can supply power. Range. Since the blocking movable member blocks a conductive path formed by dust or dust between the pair of terminals or the pair of terminal receivers, it must be a member having a width sufficient to allow one of the terminals to be invisible from the other. is there.

According to a second aspect of the present invention, there is provided the power supply connection device, wherein the pair of terminals on the plane on which the pair of terminals connected to the power supply line are planted or the pair of terminal receivers for receiving the pair of terminals are arranged. It is pressed against a region of a predetermined width including a straight line that is substantially parallel to a straight line connecting the pair of terminal receivers, does not contact the pair of terminals or the pair of terminal receivers, and extends both ends of the straight line by an appropriate distance. An eaves-shaped movable member which projects from the plane by a predetermined distance in a non-existent state and retreats to the same plane as the plane according to a pressed state is arranged.

That is, according to the second aspect of the present invention, the plane on which the pair of terminals to be connected to the power supply line are planted and the plane on which the pair of terminal receivers for receiving the pair of terminals are arranged are not connected to each other. At this time, in order to prevent dust and dirt from entering the gap to generate a spark, a shut-off type movable member that shuts off the dirt and dust falling on the pair of terminals or the pair of terminal receivers is arranged. . The blocking movable member protrudes from the above-mentioned plane by a predetermined distance in a state where it is not pressed, and can be retracted to the same plane as this plane according to the pressing state. This is because the plane on which the pair of terminals are planted and the plane on which the pair of terminal receivers for receiving the pair of terminals are arranged should ideally be in close contact with each other. In addition, since the cut-off movable member retreats in accordance with the pressing state, even when the power connection device is inclined or connected at an interval, the cut-off movable member changes the amount of protrusion in accordance with the change to remove dust and dirt. Can be shut off. Of course, if the distance between the two power supply devices is too wide, it will be impossible to supply power, so such a situation can be discovered,
It is not an object of the invention described in claim 2. According to the second aspect of the present invention, in a state where power supply is performed without any trouble,
This is for eliminating the situation where dust and dust are bad, and the maximum amount of the protruding movable member is in a range where power can be supplied. The blocking movable member includes a straight line that is substantially parallel to a straight line connecting the pair of terminals or the pair of terminal receivers, does not contact the pair of terminals or the pair of terminal receivers, and extends both ends of the straight line by an appropriate distance. The movable member, such as an eave, which is arranged in a region of a predetermined width is used to cover a pair of terminals or a pair of terminal receivers. This is because the eaves-type movable members are disposed in the upper and lower parts to prevent the intrusion thereof.

According to a third aspect of the present invention, in the power supply connection device, the pair of terminals are arranged on a plane where a pair of terminals connected to the power supply line are planted or on a plane where a pair of terminal receivers for receiving the pair of terminals are arranged. In a closed area surrounding the pair of terminal receivers, an encircling movable member that projects from the flat surface by a predetermined distance in a non-pressed state and retreats to the same plane as the flat surface in a pressed state is disposed.

According to the third aspect of the present invention, the plane on which the pair of terminals connected to the power supply line are planted and the plane on which the pair of terminal receivers for receiving the pair of terminals are arranged are not connected to each other. At this time, in order to prevent dust and dirt from entering the gap and generating a spark, a shut-off type movable member that shuts off the dirt and dust falling on the pair of terminals or the pair of terminal receivers is arranged. . The blocking movable member protrudes from the above-mentioned plane by a predetermined distance in a state where it is not pressed, and can be retracted to the same plane as this plane according to the pressing state. This is because the plane on which the pair of terminals are planted and the plane on which the pair of terminal receivers for receiving the pair of terminals are arranged should ideally be in close contact with each other. In addition, since the cut-off movable member retreats in accordance with the pressing state, even when the power connection device is inclined or connected at an interval, the cut-off movable member changes the amount of protrusion in accordance with the change to remove dust and dirt. Can be shut off. Of course, if the distance between the two power supply devices is too wide, it will be impossible to supply power, so such a situation can be discovered,
It is not an object of the invention described in claim 3. According to the third aspect of the present invention, in a state where power supply is performed without any problem,
This is for eliminating the situation where dust and dust are bad, and the maximum amount of the protruding movable member is in a range where power can be supplied. The blocking movable member is disposed in a closed region surrounding the pair of terminals or the pair of terminal receivers, and prevents the intrusion of these members from any surrounding directions.

According to a fourth aspect of the present invention, in the power supply connection device according to the second aspect, the eaves-shaped movable members are arranged in a pair on the plane so as to sandwich the pair of terminals or the pair of terminal receivers. It is characterized by.

That is, the invention according to claim 4 shows that the eaves-shaped movable member is arranged not only above the pair of terminals but also below the pair of terminals. By arranging them on both sides in this way, it is possible to effectively prevent intrusion such as falling of dust or dust, regardless of which side of the power supply connection device is turned up.

According to a fifth aspect of the present invention, in the power supply connection device according to the first and second aspects, the cutoff movable member and the eaves movable member are connected.

In other words, according to the fifth aspect of the present invention, by combining these, it is possible to effectively prevent intrusion of dust and dirt, and to shut off both power sources when dust and dirt are deposited. It is possible to dramatically improve safety.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments.

First Embodiment

FIG. 1 shows a lid portion of an exposed rectangular triple outlet as a power supply device in a first embodiment of the present invention, and FIG. 2 shows a main body portion of the exposed rectangular triple outlet. . FIG. 3 is a left side view of an exposed rectangular triple outlet with a lid attached to an upper portion of the main body, and FIG. 4 is a bottom view of FIGS. 1 and 2 when viewed from the lower side.

The lid 21 shown in FIG. 1 is divided into _three regions 22 ₁ , 22 ₂ and 22 ₃ in the longitudinal direction. The first region 22 ₁ is arranged a first insertion port 23 ₁ of the pair,
The ₂ second region 22 is disposed a second insertion port 23 ₂ of the pair, the third region 22 ₃ as well is disposed a third insertion opening 23 ₃ pair. It corresponds to the exposed square respectively receiving first to third plug pins became pair 26 ₁ triple outlet of the body portion 25, 26 _2, 26 ₃ as shown in FIG. 2, AC for example shown in FIG. 17 Adapter 1
A plug blade of a power connection device on the power receiving side such as the plug blade 14A of No. 4 is inserted.

Body part 2 of exposed rectangular triple outlet
5 has a mark 27 indicating the vertical position when mounted on a wall.
Is formed. From this mark 27, the first blade reception
26 ₁Is on the upper side and the third blade receiver 26_ThreeIs on the lower side
Can be attached to a wall (not shown)
Understand. The main body part 25 has two
Screw hole 28₁, 28_TwoAre formed, as shown in FIG.
Screw the lid 21 on the screw 29₁, 29_TwoFixed to the body 25
It is supposed to.

The above configuration is the same as that of the conventional exposure square
It is basically the same as ripple outlet. Dew of this embodiment
The lid 21 of the angled triple outlet has
Area 22₁, 22_Two, 22_ThreeMovable members 31-33
Are mounted so that they can move forward and backward.
Paired first to third blade receivers 26₁, 26_Two, 26 _Three
Plays a role in preventing the formation of a current path due to dust and dirt
It is supposed to. In this embodiment, the first movable member 31
Are T-shaped, and the second operating member 32 is shaped like a horizontal bar.
You are. The third movable member 33 is a pair of third insertion ports.
23_ThreeThe cross section that surrounds is a square tubular shape
You. In this embodiment, the three regions 22₁, 22_Two,
22_ThreeMovable members 31 to 33 of different shapes
The movable member of which shape is placed in which area
Is completely free to do, one of these is movable
The member is divided into three areas 22₁, 22_Two, 22_ThreeUnified placement
It is also possible.

First area 22₁First movable located in
The member 31 is in the second region 22_TwoSecond movable located in
The starting point is the horizontal bar portion 31A similar to the member 32 and its central portion.
As the second area 22_TwoFirst insertion port 23 in the direction₁Bottom of
And a vertical bar portion 31B extending to a position beyond the portion.
Have been. The horizontal bar portion 31A is provided with a pair of first insertion ports 23.
₁Are sufficiently longer than the interval between₁From above
Plays the role of "eave" to cover and prevent dust and dust from falling
are doing. On the other hand, the vertical bar portion 31B has a pair of
1 blade holder 26₁Between the current path due to dust and dust
Plays a role in separating dust and dirt so that they are not formed
You. The first movable member 31 is illustrated on the surface portion 35 of the lid 21.
The opposing surface of the power connection device on the other side is not pressed
As long as it protrudes from this surface part. Figure 3 shows this protrusion
It shows the state. Also, the power connection device of the other party
In a state where the electric current is secured between the facing surface of
If there is a certain gap, the first movable member
31 is held in an advancing / retreating state to fill this gap.
You. Therefore, the maximum protrusion amount of the first movable member 31 is secured.
Is set to be larger than the maximum gap that occurs when
I have.

The second movable member 32 disposed in _two second regions 22 are cross-bar 31A of the same configuration of the first movable member 31 disposed in the first region 22 _1, its function The same applies to this.

The third movable member 33 disposed in the third region 22 _3, because cross-section as to surround the third insertion port 23 ₃ of the pair is a square tubular shape, the four directions Dust and dust are prevented from entering the _third insertion port 233. 3 and 4 represent a third movable member 33 in a state in which the opposing surfaces of the power connection device on the partner side to the third region 22 ₃ is not pressed. The first to third movable members 31
33 are inserted into grooves of the respective movable members such as T-shaped via elastic members such as springs or sponges. Depending on the outlet, these movable members 31 to 31
33 may be configured by an elastic member and partially inserted into the groove.

FIG. 5 corresponds to FIG. 17, in which the exposed rectangular triple outlet of the present embodiment is attached to a wall and AC power is supplied.
This shows the state where the adapter is inserted. In this example, the second region 22 ₂ to the AC adapter 14 of the exposed rectangular triple outlet cover 21 is attached in a state of having a gap 16 in the upper. As described with reference to FIG. 17, a relatively large amount of dust and dirt 19 accumulates on the AC adapter 14 over time. However, the second operating member 32 blocks the upper part of the gap 16. Accordingly, little dust or dirt is deposited on the AC adapter 14 where the pair of blades 14A (only the front blade is shown in the figure) is present. is not risk of sparking occurs between or between the second plug blade receiving 26 ₂ of plug pins 14A of.

[0029] In this way, the exposed rectangular triple outlet of the first embodiment, by connecting a wire, not shown, interior wiring to the pair of power connection terminals 37 _1, 37 ₂ of the body portion 25 shown in FIG. 2 , the first to third insertion opening 23 21 _to
3 ₃ receive first through third plug pins through the 26 _1, 26 _2, 26 ₃
Power can be supplied to the terminal (plug blade) of the power supply connection device (not shown) inserted into the power supply connection device. Since the first to third movable members 31 to 33 are independently arranged in the _three regions 22 ₁ , 22 ₂ and 223, respectively, the power connection device is attached to any of the three outlet portions. However, it is possible to effectively prevent the generation of sparks due to dust and dirt regardless of the state of attachment of each power supply connection device. Therefore, the spark does not carbonize the resin portion of the outlet, and the pair of power supply connection terminals 37 ₁ ,
37 _{that two} current-carrying failure according to the supplied bid part power is generated also becomes nil.

Second Embodiment

FIG. 6 shows the appearance of a flat cap according to a second embodiment of the present invention. The male flat cap 41 is electrically connected to an outlet as described in the previous embodiment, a female flat connector body in which a blade insertion port is disposed in place of the blade 42 of the flat cap 41, and the like. And used to supply power. A blocking portion 45A of a movable member 45 is disposed so as to slightly protrude and retreat in the direction of arrow 44 from the center of a flat surface 43 where a pair of blades 42 are implanted at the tip of the flat cap 41. .

FIG. 7 shows a disassembled state of the flat cap shown in FIG. The movable member 45 is made of plastic and formed in a U-shape as a whole. The central portion (the portion arranged vertically in FIG. 6) is a blocking portion 45A for blocking dust and dirt. From both ends of the blocking part 45A, the slide part 4 is bent at a right angle.
5B and 45C extend, and their tips are bent inward to form the engaging portions 45D and 45E.

The flat cap 41 is configured such that an upper cover 46U and a lower cover 46D having substantially the same shape are integrally fixed with screws 47 with a pair of blades 42 interposed therebetween.
The upper cover 46U and the lower cover 46D have the same shape slide groove 48 (the lower cover 46D side is not shown).
Are formed along the longitudinal direction of the blade 42, and
The vicinity of the end on the side opposite to 3 forms a deeper engagement groove 48A. A notch 49 is formed at the other end of the slide groove 48 such that the plane 43 at an intermediate position between the pair of blades 42 is cut off at a predetermined depth. A spring 51 extends parallel to the pair of blades 42 from the inside of the notch 49.
Is protruding.

In the flat cap 41 having such a structure,
The slide portions 45B and 45C are attached to the upper cover 46U or the lower cover 4 while the blocking portion 45A is in contact with the tip of the spring 51.
6D is inserted into the corresponding slide groove 48, and is slid against the force of the spring 51 until the tips of the engaging portions 45D and 45E are engaged with the engaging groove 48A. Thus, the assembled flat cap 41 as shown in FIG. 6 is completed. When the flat cap 41 is connected to a power connection device such as an outlet on the other side, the blocking portion 45A is pressed against the opposing surface, and when the surfaces are completely joined, the blocking portion 45A is Retreat until it is on the same plane. On the other hand, as described with reference to FIG. 5, when a gap is formed in the facing surface that is electrically connected to the power supply connection device on the other side, a pair of blades 42 The space is blocked by the blocking unit 45A. That is, a path for energization made of dust and dirt is not formed between the pair of blades 42, and there is no possibility that the flat cap 41 may cause carbonization due to sparks.

In this embodiment, the male flat cap 4 is used.
Although the cut-off part 45A which can move forward and backward is formed in 1,
It is also effective to arrange a movable member similar to the movable member 45 on the female flat cap according to the same principle. Naturally, similar movable members may be arranged in both the male and female types.

FIG. 8 shows a first modification of the invention in the second embodiment. In the flat cap 61 of the first modified example, the same portions as those in FIG. 6 are denoted by the same reference numerals, and the description thereof will be omitted as appropriate. The flat cap 61 has a shape in which an upper cover 62U and a lower cover 62D are fastened with screws (not shown). A surface that constitutes the distal end of a portion located in the middle of a pair of blades 42 (in the figure, the vicinity of the distal end of the flat cap 61 is shown in a cut-out state, so the forward-side blade is not shown). Reference numeral 63 denotes a position retreated (displaced upward in the drawing) by a distance a from the flat surface 43 constituting the tip of the cap in other places. The cross-sectional shape parallel to the surface forming the blade 42 in the central portion including the surface 63 is as follows:
As shown in the figure, a part is in a constricted shape.

The movable member 66 which can move forward and backward in the direction of the arrow 65 has the same shape as the movable member 45 of the previous embodiment as a whole, but is integrally formed with the blocking portion 66A corresponding to the blocking portion 45A. A bent spring member 66F is arranged. The engaging portions 66D and 66E corresponding to the engaging portions 45D and 45E of the previous embodiment are adapted to engage with the above-described constricted portions.

The movable member 66 makes the blocking member 66A protrude as far as possible in the tip direction of the blade 42 by the force exerted on the surface 63 by the spring member 66F in a state where no external force is applied to the blocking member 66A. When the flat cap 61 is to be connected to a power connection device such as a connector (not shown) or a female flat cap in this state, the distal end face of the power connection device on the other side presses the blocking portion 66A. When the connection is made perfectly, the distal end surface of the power supply connection device on the other side retreats the distal end surface of the interrupting portion 66A to the same plane as the flat surface 43, and these surfaces come into close contact with each other. On the other hand, when the connection is incomplete and a certain gap is generated between the front end face of the power supply connection device on the other side and the flat surface 43, the blocking portion 66A keeps the protruding state, and the pair of plugs Blade 42
Will function to shut off between

FIG. 9 shows a second modification of the invention in the second embodiment. In the flat cap 71 of the second modified example, the same portions as those in FIGS. 6 and 8 are denoted by the same reference numerals, and the description thereof will be omitted as appropriate. In the flat cap 71 of the second modified example, the convex movable member 7 is provided at the position where the movable member 66 of the first modified example is disposed.
6 is arranged so as to be able to advance and retreat in the direction of arrow 65. The movable member 76 is also fitted in a space 77 having a convex shape. In order to cause the movable member 76 to protrude from the flat surface 43 in a state where no external force is applied, an elliptical spring member 76
F is similarly arranged.

When the flat cap 71 is to be connected to a power connecting device such as a connector or a female flat cap (not shown), the flat cap 71 is retracted as the distal end surface of the mating power connecting device presses the cut-off portion 76A. . Then, when the connection is made perfectly, the front end surface of the power supply connection device on the other side is connected to the front end surface of the cut-off portion 76A by the flat surface 4.
3 are retracted to the same plane, and these planes are completely adhered. On the other hand, when the connection is incomplete and a certain gap is generated between the front end surface of the power supply connection device on the other side and the flat surface 43, the blocking portion 76A keeps the protruding state, and the pair of plugs It will function to cut off between the blades 42.

Next, the shapes of various movable members applicable to the second embodiment and the modifications will be described.

FIGS. 10 to 13 show various movable members protruding from the distal end surface of the flat cap. The flat cap 81 shown in FIG. 10 is similar to that of the second embodiment. The flat cap 81 has a rod shape or one flat plate at an intermediate position between the blades 42 on the plane 43 on which the pair of blades 42 are implanted. Are movable so as to be able to advance and retreat. FIG.
A T-shaped movable member 84 is disposed on the flat cap 83 shown in FIG. The flat cap 83 of this example is connected to a power connection device such as an outlet with the upper side facing upward in the figure.

A flat-shaped cap 85 shown in FIG. 12 has a D-shaped movable member 86 disposed therein. The flat cap 85 of this example may be connected to a power connection device such as an outlet with the upper side facing upward in the figure, or may be connected with the lower side facing upward in the opposite direction. Good. The flat cap 87 shown in FIG.
8 are arranged so as to surround the respective blades 42. Therefore, no matter what angle the flat cap 87 itself is arranged, it is possible to reliably prevent the occurrence of obstacles due to dust. Of course, each movable member 82, 84,
It is preferable that the ends 86 and 88 are such that the end faces facing the front end face of the power supply connection device on the other side come into full contact with the front end face. Therefore, each movable member 82, 84, 86, 88
It is preferable that, rather than always projecting by equal amounts from the flat surface 43, the projecting amounts can be freely changed according to the angle at the time of connection with the front end surface of the power supply connection device. .

Third Embodiment

FIGS. 14 to 16 show a branch adapter as a power supply connection device in the third embodiment of the present invention. Of these, 14 are those viewed branching adapter 91 from the lower side, similarly the pair second insertion port 92 ₂ are disposed with the first insertion opening 92 ₁ of the pair. FIG. 15 shows the branch adapter 91 in a posture of being inserted into an outlet (not shown) attached to a vertical member such as a wall. Between a pair of blades 93 (only the front blade is shown in the figure) for insertion into the insertion opening of the outlet (not shown), a flat surface 94 to be brought into contact with the front end surface of the outlet in the direction of arrow 95. A movable member 96 slightly projects so as to be able to advance and retreat.

FIG. 16 shows a plane where a pair of blades 93 in the branch adapter 91 are implanted. In this embodiment, the movable member 96 is T-shaped. Therefore, even if the corner tap 91 is attached to the outlet while being inclined as shown in FIG. 17, the horizontal bar portion 96A of the movable member will block dust and dust falling from above. In addition, the vertical bar portion 96B of the movable member prevents dust or dirt from wrapping between the pair of blades 93 to prevent sparking.

In the embodiments and the modified examples described above, the terminal inserted for receiving power supply to a power supply device such as an outlet has been described as a plug blade. However, the terminal need not be of such a flat plate shape. Instead, for example, a part or the whole thereof may be cylindrical. In such a case, it is natural that the shape of the insertion port as the receiving port of the terminal also matches the shape. In the embodiment, the outlet, the flat cap, and the branch adapter have been described as examples. However, it is obvious that the present invention can be applied to other power supply connection devices.

[0048]

As described above, claims 1 to 3 are described.
According to the described invention, the movable member is made to protrude from a predetermined plane, and can be retracted to the same plane as this plane when pressed. Thereby, when the power supply connection devices are connected, these surfaces can be completely adhered to each other,
The connection state can be stabilized as in the related art. Moreover, even when a gap is generated between the power-connected devices without bringing the surfaces of the power-connected devices into close contact with each other, the movable member fills a part of the gap, so that dust or dirt accumulates at important parts of the power-connected device. Can be effectively prevented, and the safety can be improved.

According to the first aspect of the present invention, since the shut-off movable member is disposed between the pair of terminals or the pair of terminal receivers, the direction of rotation of these terminals or terminal receivers is determined. Alternatively, there is an effect that sparks caused by dust and dirt can be effectively prevented at the time of connection between power supply connected devices even if they are arranged at positions.

Further, according to the second aspect of the present invention, both ends of the straight line which are substantially parallel to the straight line connecting the pair of terminals or the pair of terminal receivers, do not contact the pair of terminals or the pair of terminal receivers, and The eave-shaped movable member is arranged in a region of a predetermined width including a straight line extended by an appropriate distance. Accordingly, the possibility that not only dust and dirt but also water droplets drop onto the pair of terminals or the pair of terminal receivers can be greatly reduced, and the electrical characteristics of the power supply connection device itself can be kept good for a long period of time. .

According to the third aspect of the present invention, since the surrounding movable member is disposed in the closed area surrounding the pair of terminals or the pair of terminal receivers, the power supply connection device can be moved in any rotational position and direction. Even if it is arranged, it is possible to effectively prevent dust, dust, or moisture from entering the closed area.

Further, according to the fourth aspect of the present invention, since the eave-shaped movable member is arranged not only on the upper side of the pair of terminals but also on the lower side, either side of the power supply connection device is placed on the upper side. Even so, it is possible to effectively prevent intrusion of dust or dust falling.

According to the fifth aspect of the present invention, the cut-off movable member and the eaves-shaped movable member are connected by the power supply connection device. Can be realized, and double security can be ensured.

[Brief description of the drawings]

FIG. 1 is a plan view of a lid of an exposed rectangular triple outlet according to a first embodiment of the present invention.

FIG. 2 is a plan view of a main body portion of the exposed rectangular triple outlet in the first embodiment.

FIG. 3 is a plan view of the exposed rectangular triple outlet in the first embodiment as viewed from the left side.

FIG. 4 is a plan view of the exposed rectangular triple outlet according to the first embodiment as viewed from below.

FIG. 5 is a side view showing a state in which an AC adapter is attached to the exposed rectangular triple outlet in the first embodiment.

FIG. 6 is a perspective view of a flat cap according to a second embodiment of the present invention as viewed obliquely from above.

FIG. 7 is a perspective view showing a state where the flat cap shown in FIG. 6 is disassembled.

FIG. 8 is a partial sectional view showing a flat cap as a first modification of the invention in the second embodiment.

FIG. 9 is a partial sectional view showing a flat cap as a second modification of the invention in the second embodiment.

FIG. 10 is a plan view of one embodiment of the flat cap as viewed from the tip of the blade.

FIG. 11 is a plan view of another embodiment of the flat cap as viewed from the tip of the blade.

FIG. 12 is a plan view of still another embodiment of the flat cap as viewed from the tip of the blade.

FIG. 13 is a plan view of still another embodiment of the flat cap as viewed from the tip of the blade.

FIG. 14 is a plan view of a branch adapter according to a third embodiment of the present invention as viewed from below.

FIG. 15 is a side view of a branch adapter according to the third embodiment.

FIG. 16 is a plan view of a surface on which a blade of a branch adapter according to a third embodiment is implanted.

FIG. 17 is an explanatory diagram showing an example of dust or dust accumulation when an AC adapter is connected to a conventional embedded outlet.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 16 Gap 19 Dust and dust 21 Lid (of an exposed rectangular triple outlet) 26 Blade holder 31-33, 45, 66, 76, 82, 84, 86, 8
8, 96 Movable member 41, 61, 71, 81 Flat cap 48 Sliding groove 51 Spring 66F, 76F Spring member 91 Branch adapter

Claims (5)

[Claims] 1. A position between a pair of terminals or a pair of terminal receivers on a plane on which a pair of terminals to be connected to a power supply line are provided or a plane on which a pair of terminal receivers for receiving the pair of terminals are arranged. To the predetermined area
In a non-pressed state, it projects from this plane by a predetermined distance and retreats to the same plane as this plane according to the pressed state, and at the time of projection, from any position on the plane corresponding to one of the pair of terminals or the pair of terminal receivers to the other. A power supply connection device, wherein a cut-off type movable member having a width sufficient to make it impossible to see a position corresponding to a part is arranged. And a straight line connecting the pair of terminals or the pair of terminal receivers on a plane on which a pair of terminals connected to the power supply line is provided or a plane on which a pair of terminal receivers for receiving the pair of terminals are arranged. A predetermined distance from this plane in a non-pressed state, in a region of a predetermined width including a straight line that is substantially parallel, does not contact the pair of terminals or the pair of terminal receivers, and extends both ends of the straight line by an appropriate distance. An eaves-type movable member, which protrudes only and retreats to the same plane as this plane in accordance with a pressed state, is disposed. 3. A closed area surrounding the pair of terminals or the pair of terminal receivers on a plane on which a pair of terminals connected to the power supply line is provided or a plane on which a pair of terminal receivers for receiving the pair of terminals are arranged. And a surrounding movable member protruding from the plane by a predetermined distance in a non-pressed state and retracting to the same plane as the plane according to the pressed state. 4. The power supply connection device according to claim 2, wherein the eave-shaped movable members are arranged in a pair on the plane so as to sandwich the pair of terminals or the pair of terminal receivers. 5. The power supply device according to claim 1, wherein the cut-off type movable member and the eaves-type movable member are connected to each other.