JP4897425B2 - Retaining outlet with door - Google Patents

Description

  The present invention relates to an outlet having a plug blade insertion hole that is always closed by a door body and having a plug retaining mechanism for the inserted plug. The present invention relates to a retaining outlet with a door that can prevent the occurrence of damage.

  Conventionally, in order to prevent the plug inserted into the outlet from being inadvertently pulled out, an outlet having a mechanism for preventing the plug from being inserted is provided. Outlets with such a retaining mechanism are frequently used as waterproof outlets installed outdoors, where power cords are often pulled inadvertently, but in recent years, with the spread of electronic devices such as computers In order to ensure the reliability of power supply to these electronic devices, it is frequently used as a wall-embedded outlet or a table tap outlet used indoors.

  As for an outlet having such a retaining mechanism, there is Patent Document 1 (Japanese Patent Laid-Open No. 8-273746) regarding a waterproof outlet installed outdoors, and Patent Document 2 (Japanese Patent Laid-Open No. 9-151) regarding an outlet used indoors. -320671). The waterproof outlet described in Patent Document 1 is formed with a door that closes the plug blade insertion hole, and closes the plug blade insertion hole and the pin insertion hole of the outlet body when the plug blade and the ground pin are not inserted. It is formed as a structure.

In addition, for the purpose of preventing dust intrusion and children's mischief from the past, there is also an outlet provided with a door body that opens and closes the plug blade insertion port by plugging / unplugging the plug blade in the outlet. Is provided. As an outlet provided with such a door body, the present patent applicant has previously proposed an insertion connector according to Patent Document 3 (Japanese Utility Model Publication No. 48-17999). Even if an infant mischiefly inserts a wire or a metal piece into one insertion port, this insertion connector is not connected to the other electrode side unless a metal piece is inserted into the insertion port. The insertion slot is configured not to release.
JP-A-8-273746 JP-A-9-320671 Japanese Utility Model Publication No. 48-17999

  However, in the waterproof outlet described in the above-mentioned Patent Document 1, even when the plug blade of the plug is inserted from the position where the retaining mechanism acts, the door body that closes the plug blade insertion hole opens. For this reason, there was a possibility that the initially planned engagement state between the plug and the outlet could not be obtained.

  Therefore, the present invention is to provide a retaining outlet with a door that can prevent the insertion of an inappropriate plug, in which the plug blade insertion hole is opened only when the plug blade of the plug is inserted from a predetermined insertion position. And

  In addition, if the plug blade is inserted from the position where the retaining mechanism acts, the plug blade or the blade receiving spring of the plug will be loaded because it is not in the original insertion state. The plug blade may be deformed or the internal structure of the outlet may be damaged.

  Accordingly, an object of the present invention is to provide a door-preventing outlet that prevents improper unauthorized plugging and prevents the plug blade from being deformed or the internal structure of the outlet from being damaged. .

  In order to solve at least one of the above problems, the present invention provides a retaining outlet with a door that does not open a door for closing a plug blade insertion hole unless it is inserted from a predetermined position.

  That is, according to the present invention, there is provided a door outlet having an arcuate plug blade insertion hole through which the inserted blade can be rotated, and a door body for closing the plug blade insertion hole. Is formed with an inclined surface for converting the insertion force of the plug blade into a force for opening the door body, and the inclined surface has a flat surface or a protruding surface that is reversely inclined with respect to the inclined surface. The present invention provides a retaining outlet with a door characterized in that a section is provided.

  According to such a door outlet, the part of the inclined surface that converts the insertion force of the plug blade into the force to open the door body is flat or opposite to the inclined surface. Even if the plug blade is inserted from the portion where this protrusion exists, the insertion force of the plug blade is not converted into the force to open the door body, The door body can keep the state where the plug blade insertion hole is closed, thereby preventing the plug blade from entering the plug blade insertion hole.

  Further, in the above-mentioned door socket outlet, the pair of arcuate plug blade insertion holes arranged opposite to each other has a plug blade insertion position that allows insertion of the plug blade, and a plug blade holding position that retains the inserted blade. It is desirable that the protrusion is provided at the stopper blade holding position.

  With a retaining outlet, it is not normally assumed that the plug blade is inserted from the plug blade holding position that holds the inserted blade, and if the plug blade is forcibly inserted from the plug blade holding position, In order to prevent the plug blade from coming off, a configuration provided in the outlet (hereinafter referred to as “removal prevention configuration”) is damaged, or the plug blade is deformed. Therefore, by reliably preventing the insertion of the plug blade from such a blade holding position, it is possible to prevent the breakage of such a retaining structure and the deformation of the blade.

Further, in the present invention, in order to solve at least one of the above-described problems, a door including an arc-shaped plug blade insertion hole in which the inserted plug blade is rotatable, and a door body that closes the plug blade insertion hole. It is a non-removable outlet, and has an arc-shaped grounding blade insertion hole and a door body that closes the grounding blade insertion hole. The door body converts the insertion force of the grounding blade into a force that opens the door body. An inclined outlet with a door is provided, in which a part of the inclined surface is provided with a protrusion having a flat surface or a reverse inclined surface with respect to the inclined surface.
According to such a door socket outlet, the above-mentioned protrusion will be provided on the inclined surface of the door body that closes the grounding blade insertion hole, and when the plug is inserted into the outlet from an inappropriate position. In the power plug, the grounding blade hits the protrusion, and the door body does not move in the opening direction, and insertion of the power plug into the outlet is prevented. In particular, in the standardized power plug, since the grounding blade is formed longer than the plug blade, when the grounding blade hits the projection of the door body, the plug blade closes the plug blade insertion hole. It can be prevented from hitting the body and deforming.
The above-mentioned retaining outlet with a door includes an arc-shaped grounding blade insertion hole and a door body that closes the grounding blade insertion hole, and the protrusion may be provided on the door body that closes the plug blade insertion hole. . If the plug blade is inserted from an inappropriate position as described above, a problem of deformation of the plug blade also occurs, so that such a problem is solved. In particular, when compared with a grounding blade, the plug blade is usually easily deformed in the thickness direction, so that the deformation of the plug blade is surely prevented.
When forming the protrusion on the door body as described above, it is desirable to adjust the formation position as follows. That is, a pair of arc-shaped plug blade insertion holes arranged opposite to each other has a plug blade insertion / extraction position that enables insertion and removal of the plug blade, and a plug blade holding position that holds the inserted plug blade in place. The protrusion provided on the door body that closes the insertion hole of the ground blade is a retaining outlet with a door provided at a position where the ground blade is located when the pair of blades are present at the blade holding position.

  In addition, when the protrusion includes all door bodies provided in the outlet, that is, a pair of door bodies that close the pair of plug blade insertion holes, and a door body that closes the ground blade insertion hole, All can be provided. Further, when a pair of plug blade insertion holes and a ground blade insertion hole are provided, the protrusion is formed only on the door body that closes the plug blade insertion hole, or only on the door body that closes the ground blade insertion hole. Protrusions can also be formed. By forming protrusions on all door bodies that close at least the plug blade insertion holes, any deformation in the pair of plug blades can be prevented.

  In addition, when the outlet socket with a door is mounted in a rainproof plate and has an outlet boss portion that faces downward when installed on a wall surface, and the plug blade insertion hole is provided in the outlet boss portion. A more remarkable effect is obtained. This is because when the plug blade insertion hole is formed in the downward outlet boss in the installed state, it is difficult to visually check the plug blade insertion hole if the outlet is provided at a low position on the wall surface. However, in the retaining outlet with a door according to the present invention, when the plug blade is inserted from an inappropriate position, the door body for closing the plug blade insertion hole is not opened, and insertion at the inappropriate position can be prevented. Therefore, the door outlet according to the present invention can insert the plug blade from an appropriate position even when the plug blade insertion hole is installed in a state in which it is difficult to see.

  In addition, the door outlet is provided with a case body composed of a body and a cover, and an outer shell is formed, and the door body is provided at the tip of an arm portion whose base is supported in the case body, The door body can be formed such that the arm portion is elastically biased (not shown) in a direction to close the plug blade insertion hole. Even if the plug blade insertion hole is closed by the door body in such a configuration, if the protrusion is formed on the door body, the insertion force of the plug blade inserted from the portion where the protrusion is formed is not affected by the protrusion. The door body is not moved against the elasticity that is received by the portion and biases the arm portion.

  Further, the door outlet is provided with an outer shell formed of a case body composed of a body and a cover, and the door body is supported by a receiving portion provided integrally or separately in the case body. The plug blade insertion hole can be slid in a direction to open and close, and can be configured to be elastically biased in a direction to close the plug blade insertion hole. Even if formed in this way, if the protrusion is formed on the door body, the insertion force of the plug blade inserted from the portion where the protrusion is formed is received by the protrusion, and the plug blade insertion hole is formed. The door body is not slid in the opening / closing direction.

  Hereinafter, one embodiment of a retaining outlet 1 with a door according to the present invention will be described based on the drawings. However, in the retaining outlet with a door described below, the same reference numerals are given to the same members or structures in terms of operational effects.

  1A is a side view, FIG. 1B is a front view, FIG. 1D is a rear view, and FIG. 2D is a bottom view showing the overall structure of a retaining outlet 1 with a door according to the present embodiment. It is (A) 2A-2A arrow sectional drawing in (B), (B) 2B-2B arrow sectional drawing. In particular, the door-prevention outlet 1 shown in this embodiment is embodied as a waterproof outlet that is installed outdoors and is suitable for use.

  In this door socket outlet 1, a body 2, a cover 3 that forms an internal space together with the body 2, and an outlet boss that is attached to an opening that opens on the lower surface side when the cover 3 is attached to the body 2. 4 and 4 form an outer shell (case body 6).

  The outlet boss 4 formed downward in the case body 6 is provided with two power plug insertion ports 7. In this embodiment, each plug insertion port 7 is configured by a pair of plug blade insertion holes 10 formed in an arcuate shape and arranged to face each other, and a ground blade insertion hole 11 provided separately from the plug blade insertion hole 10. The power supply plug 20 having a two-pole grounding type can be inserted. Further, a ground screw 13 constituting a ground terminal is provided below the outlet boss 4 in the cover 3, and a ground wire provided separately from the two-pole power plug 20 ′ with a ground wire is connected to the ground screw 13. So that it can be grounded.

  In the case body 6, a blade receiving spring 14 is disposed behind each plug blade insertion hole 10 formed in the outlet boss 4, and a blade receiving spring for a grounding blade is also disposed behind the grounding blade insertion hole 11. (Not shown) is arranged. The plug blade insertion hole 10 and the ground blade insertion hole 11 are formed in an arc shape on the surface of the outlet boss 4 so that the inserted plug blade 21 and the ground blade 22 can be rotated by a predetermined angle. It is configured.

In addition, when the inserted power plug 20 is rotated by a predetermined angle, the power plug 20 is formed with a retaining mechanism for holding the power plug 20 so as to prevent the power plug 20 from being detached. However, the present invention does not have a feature in the retaining mechanism, and since there are many known techniques (such as Japanese Patent Laid-Open No. 10-223306) for the retaining mechanism, this retaining mechanism. The detailed description about is omitted in this specification. Incidentally, when referring to details of the retaining mechanism, in addition to the Japanese Patent 10-223306 discloses can be referred to the technique described in JP-A-10-223302.

  In the non-door outlet 1 with the door according to the present embodiment, a power plug is provided in the door body 30 that opens and closes the pair of plug blade insertion holes 10 and the ground blade insertion holes 11 constituting each plug insertion port 7. An inclined surface 31 that moves the door body 30 in the direction of opening each blade insertion hole with the insertion of the blade 20 and a protrusion 32 that protrudes from the inclined surface 31 are formed (FIG. 1 ( D)).

  Hereinafter, the configuration and operation / effect of the door body 30 will be specifically described with reference to FIGS. FIG. 3 is an enlarged view of a main part for explaining the operation of the door body 30 in the door outlet 1 according to this embodiment, and FIG. 4 is a diagram showing the operational effects of the door body 30 and other embodiments. FIG.

  FIG. 3 shows a cross-sectional view of the vicinity of the door body 30 in the electrical outlet 1 with a door, and the insertion state of the power plug 20. The ground blade 22 can be inserted into and removed from the ground blade insertion hole 11. There is a grounding blade insertion / extraction position to be held, and a holding position which is present at a position where the inserted grounding blade 22 is rotated and which prevents the power plug 20 from being pulled out. Among these, as shown in FIGS. 3A to 3C, when the ground blade 22 is inserted from the insertion / extraction position of the ground blade 22, the inserted ground blade 22 closes the ground blade insertion hole. When hitting the inclined surface 31 of the door body 30, the door body 30 is pushed out in the direction in which the ground blade insertion hole 11 opens (the direction indicated by the arrow in the drawing). At this time, the door body 30 is supported at the base (the back side portion into which the grounding blade 22 is inserted) and is elastically biased by an elastic body (not shown) having a certain elasticity to insert the grounding blade. Although the hole 11 is closed, insertion of the grounding blade 22 moves the door body 30 in a direction to open against the elastic bias. As a result, the power plug 20 is inserted into an outlet, and by rotating the plug 20, it is possible to prevent the power outlet from falling off. In particular, the door body 30 in the present embodiment is provided at the tip of an arm portion 51 whose base is supported in the case body, and the ground blade insertion hole 11 is closed by an elastic body (not shown) via the arm portion 51. It is elastically biased in the direction of

  On the other hand, as shown in FIG. 3D, when the ground blade 22 is inserted from the holding position of the power plug 20 in the ground blade insertion hole 11, the ground blade 22 is a protrusion formed on the door body 30. 32, and the movement of the door body 30 is thereby prevented, so that the ground blade insertion hole 11 does not open. As shown in FIG. 3 (D), the protrusion 32 only needs to be formed at a position where the grounding blade 22 to which the plug 20 is to be inserted from the holding position hits. In addition to being formed as a surface perpendicular to the insertion direction, the inclined surface 31 can be formed as an inclined surface (opposite inclined surface). FIG. 3A shows a drawing of the door body and a schematic view seen from the back side in the insertion direction of the power plug, together with a sectional view showing the vicinity of the door body.

  Thus, since the insertion of the power plug 20 to be inserted into the outlet according to the present embodiment is prevented by the projection 32 formed on the door body 30, the plug blade 21 and the ground blade 22 are deformed. And the blade receiving spring 14 in the outlet is not damaged. In particular, as shown in this embodiment, by forming the protrusion 32 on the door body 30 that closes the grounding blade insertion hole 11, the standardized power plug 20 is to be inserted from the holding position in the outlet. In this case, since the grounding blade 22 first collides with the protrusion 32 formed on the door body 30, the plug blade 21 formed shorter than the grounding blade 22 does not hit the door body 30. Therefore, the deformation of the plug blade 21 can be reliably prevented. FIG. 3D shows a schematic view seen from the back side in the insertion direction of the power plug together with a sectional view showing the vicinity of the door body.

  As shown in the present embodiment, if the protrusion 32 is formed not only on the door body that closes the ground blade insertion hole but also on the door body 30 that closes the plug blade insertion hole 10, the power plug 20 is temporarily connected. Even when the plug blade 21 is inserted into the outlet in an inclined state and the plug blade 21 contacts the plug blade insertion hole 10, the door body 30 that closes the plug blade insertion hole 10 does not open. Thereby, the situation where the blade receiving spring of the outlet is damaged can be avoided.

  Next, the operation and effect when the protrusion 32 is formed in another embodiment of the door body 30 that closes the plug blade insertion hole will be described with reference to FIG. As shown in FIG. 4A, when the plug blade 21 is inserted from a portion (insertion position) where no projection is provided on the inclined surface 31 of the door body 30, the plug blade 21 enters. As a result, the door body 30 moves in the lateral direction, whereby the plug blade insertion hole 10 is opened. On the other hand, as shown in FIG. 4 (B), when a protrusion 32 having a plane perpendicular to the insertion direction of the plug blade 21 is formed on the slope, the plug blade 21 inserted is the protrusion. Since it is received by 32 and the door body 30 does not move laterally, the plug blade insertion hole 10 remains closed. As a result, it is possible to avoid a situation in which the deformation of the plug blade 21 and the constituent elements of the outlet existing behind the plug blade insertion hole 10 are damaged. In addition, as shown in FIG. 4C, the protrusion 32 has an inclined surface 31 that is opposite to the inclined surface 31 that converts the insertion force of the plug blade 21 into a force that opens the door body 30. It can also be embodied as

  FIG. 5 is an enlarged view of a main part showing the form of the vicinity of the door of the door outlet 30 according to another embodiment of the door body 30 that closes the ground blade insertion hole, and (A) to (C) are ground blades 22. The flow of opening the grounding blade insertion hole 11 due to the movement of the door body 30 due to the insertion of, and (D) shows an example of inserting the power plug 20 from the holding position of the grounding blade insertion hole 11. Show. 5A shows a drawing of the door body and a schematic view seen from the back side in the insertion direction of the power plug together with a sectional view showing the vicinity of the door body, and FIG. 5D shows the door body. A schematic view seen from the back side in the insertion direction of the power plug is shown together with a sectional view showing the vicinity of the power plug.

In the outlet shown in this figure, the door body 30 that closes the plug blade insertion hole 10 and the ground blade insertion hole 11 is elastically biased by a spring 50 to close each insertion hole. When the power plug 20 is inserted from the insertion position of each insertion hole, the inclined surface 31 of the door body 30 that closes the ground blade insertion hole 11 by the ground blade 22 is pushed (in a direction against the elastic bias of the spring), The grounding blade insertion hole 11 is opened. Insertion of the same as blade 21 inclined surface 31 of the door 30 for closing the blade insertion hole 10 is pressed (in the direction of anti-to elastically energized spring), it is opened the blade insertion hole 10. On the other hand, when the power plug 20 is inserted out of the original plug 20 insertion position, the grounding blade 22 and the plug blade 21 are restrained by the protrusions 32 formed on the door bodies 30 to prevent the intrusion. In addition, the door body 30 does not move in the direction of opening each insertion hole due to the presence of the protrusion 32.

  FIG. 6 is an embodiment diagram of FIGS. 4 (A) and 4 (B) and shows an example of an outlet corresponding to a bipolar power plug 20 ′ without the ground blade 22. In the outlet shown in this example, a protrusion is formed on the door body 30 that closes the plug blade insertion hole 10, and thus the plug blade insertion when the power plug 20 ′ is inserted from the holding position of the plug blade insertion hole 10. The opening of the hole 10 is blocked. Note that the configuration of the protrusion 32 and the operational effects obtained thereby are the same as those of the outlet into which the two-pole grounding type power plug 20 can be inserted, and are omitted here. 6A to 6C show a flow in which the door body 30 moves and the plug blade insertion hole 10 is opened by insertion of the plug blade 21, and FIG. 6D shows the power plug 20 connected to the plug blade. The example at the time of inserting from the holding position of the insertion hole 10 is shown. 6A shows a drawing of the door body and a schematic view seen from the back side in the insertion direction of the power plug, together with a cross-sectional view showing the vicinity of the door body, and FIG. 6D shows the door body. A schematic view seen from the back side in the insertion direction of the power plug is shown together with a sectional view showing the vicinity of the power plug.

  7A is a front view showing a specific example of an outlet according to another embodiment, FIG. 7B is a schematic view showing a moving direction of the door body 30, and FIG. In particular, the outlet according to this embodiment is embodied as a wall surface embedded outlet.

  In the outlet shown in this figure, a housing having a standardized dimension in the wiring device is formed by the body 2 existing on the back side and the cover 3 existing on the front side. An attachment frame 51 for installing the outlet on the wall surface (or an attachment provided on the wall surface) is integrated. A power plug insertion port 7 into which a two-pole grounding type power plug 20 can be inserted into the outlet boss 4 present on the front surface of the housing thus formed (more specifically, the front surface of the cover 3). Are arranged at the top and bottom of the two openings, and the plug blade insertion hole 10 and the ground blade insertion hole 11 constituting each power plug insertion hole 7 are provided with door bodies 30 for closing and opening them. The door body 30 also has the inclined surface 31 formed at the insertion position of the power plug 20 and the protrusion 32 formed at the holding position. Thereby, the insertion of the power plug 20 from the inappropriate position described above can be prevented.

  Although FIG. 7 shows an example of a wall-embedded outlet, in particular, a plug socket that can be used to prevent the plug by rotating the inserted power plug 20 around the insertion shaft. And if it is provided with the door body 30 which closes the insertion hole of the plug blade 21 and the earthing | grounding blade 22, this invention can be implemented. For example, the present invention can be implemented as an outlet portion in a table tap or the like.

  FIG. 8 is a diagram for explaining a specific example of the size and formation position of the protrusion 32. In the case of the above-described outlet, the insertion / extraction position (FIG. 8A) into which the plug blade 21 of the power plug 20 can be inserted, and the insertion shaft of the power plug 20 (in this figure, go straight to the drawing). There is a holding position (FIG. 8 (B)) for retaining the plug 20 so that the plug 20 is not pulled out by being rotated around the direction of the axis. In the outlet according to the present invention, since the power plug 20 is prevented from being inserted from such a holding position, the protrusion 32 is formed so as to exist in this holding position. Further, when the power plug 20 is inserted from the original insertion position, the door body 30 is moved by the insertion of the power plug 20, and the plug blade insertion hole 10 and the ground blade insertion hole 11 are opened. Since it is necessary, it is necessary that the protrusion is not formed at least at the insertion position. For this reason, when forming the projection, for example, in the blade insertion hole 10, the length L of the hole is removed from the length M of the blade 21 existing at the insertion position (ie, the holding region). It is desirable that it be formed to a length N of (position). In consideration of the clearance when inserting the blade 21, it is desirable that the length M of the blade 21 is assumed to be slightly longer.

(A) Side view, (B) Front view, (C) Rear view, (D) Bottom view showing the overall structure of a door socket outlet according to the present embodiment In FIG. 1 (B), (A) 2A-2A arrow sectional drawing, (B) 2B-2B arrow sectional drawing The principal part enlarged view explaining operation | movement of the door body of the earthing | grounding blade insertion hole in the retaining outlet with a door of embodiment The principal part enlarged view which shows the effect by the said door body in the plug blade insertion hole of other embodiment The principal part enlarged view which shows the door in the grounding blade insertion hole of other embodiment The door body in the plug blade insertion hole of other embodiment is shown, (A)-(C) is explanatory drawing which shows the flow which opens the plug blade insertion hole by insertion of a plug blade, (D) is a power plug Explanatory drawing showing the case where the is inserted from the holding position of the plug blade insertion hole Furthermore, (A) front view which shows the specific example of the outlet socket concerning other embodiment, (B) right view, (C) schematic which shows the moving direction of a door body It is explanatory drawing which shows the magnitude | size and formation position of a protrusion, (A) is an insertion position, (B) is explanatory drawing which shows a holding position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outlet with door 2 Body 3 Cover 4 Outlet boss 7 Power plug insertion port 10 Plug blade insertion hole 11 Ground blade insertion hole 20 Power plug 21 Plug blade 22 Ground blade 30 Door body 31 Inclined surface 32 Projection

Claims (7)

An outlet plug with a door provided with an arc-shaped plug blade insertion hole in which the inserted blade can be rotated, and a door body for closing the plug blade insertion hole,
In the pair of arc-shaped plug blade insertion holes arranged opposite to each other, there is a plug blade insertion / removal position that enables insertion and removal of the plug blade, and a plug blade holding position that holds the inserted plug blade in place.
The door body is formed with an inclined surface that converts the insertion force of the plug blade into a force for opening the door body,
A stopper outlet with a door, characterized in that a protrusion having a planar shape orthogonal to the insertion direction of the plug blade or a reverse inclined surface with respect to the inclined surface is provided at the stopper blade holding position on the inclined surface.
2. The door according to claim 1 , wherein the protrusion is formed to have a length of a holding position excluding a length of the plug blade existing at the insertion position from a length L of the plug blade insertion hole. Unplugged outlet.
An outlet plug with a door provided with an arc-shaped plug blade insertion hole through which the inserted blade can rotate, and a door body for closing the plug blade insertion hole, further comprising an arc-shaped ground blade insertion hole, It has a door that closes the grounding blade insertion hole,
The pair of arc-shaped plug blade insertion holes arranged opposite to each other has a plug blade insertion / removal position that enables insertion / removal of the blade, and a blade retention position for retaining the inserted blade.
The door body that closes the insertion hole of the grounding blade has an inclined surface that converts the insertion force of the grounding blade into a force that opens the door body,
When the pair of plug blades on the inclined surface is located at the plug blade holding position, the ground blade is located at a flat surface orthogonal to the insertion direction of the plug blade or a protrusion having an inclined surface opposite to the inclined surface. A non-removable outlet with a door.

The projection is claims 1 to 3 doors with retaining receptacle, wherein the provided every door body.
The retaining outlet with the door is mounted in a rainproof plate and includes an outlet boss portion that faces downward when installed on the wall surface.
The blade insertion holes claims 1 to 4 doors with retaining receptacle, wherein the provided in the outlet boss.
The outlet socket with a door has an outer shell formed by a case body consisting of a body and a cover.
The door body is provided at the tip of an arm part whose base is supported in the case body,
The door is claims 1 to 5 doors with retaining receptacle, wherein in that the arm portion is elastically biased in a direction of closing the blade insertion hole.
The door outlet is a case body consisting of a body and a cover, and an outer shell is formed.
The door body is supported by a receiving portion provided integrally or separately in the case body, slides in a direction to open and close the plug blade insertion hole, and elastically biases in a direction to close the plug blade insertion hole. It claims 1 to 4 doors with retaining receptacle, wherein the being.