JP2010055837A - Plug receiving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plug receiving device capable of preventing slipping-off of a plug regardless of existence of a fixed part, and moreover, in the case the plug has the fixed part, capable of releasing slipping-off prevention when an excessive external force is applied. <P>SOLUTION: The plug receiving device 1 is equipped with a body 2 having plug blade insertion holes 40a to 40c on one face 4a, and locking protrusions 61a, 61b to be mechanically bonded to the plug blade of the plug 120 and to prevent slipping-off. The plug blade insertion holes 40a to 40c are formed to be capable of rotating the plug 120 between an insertion-extraction position of inserting and extracting the plug blade 120 and a slipping-off preventing position of preventing the plug from silipping-off by the locking protrusions 61a, 61b. At the body 2, a locking piece (fixed part) 40e to lock a locking piece (fixed part) 121 installed at the plug 120 and to fix the plug 120 at the insertion-extraction position is installed. A locked state of the protrusion piece 40e and the locking piece 121 is released when a force of a prescribed value or more is applied in a direction of which the plug 120 and the body 2 are separated from each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a plug receiving device for connecting a plug.

  Conventionally, various plug receiving devices such as an outlet have been proposed. In such a plug receiving device, the plug is fixed to the plug receiving device by holding the plug blade of the plug (insertion plug) with the blade receiving of the plug receiving device. For this reason, the plug can be easily pulled out by external force, for example, the operation of the electric device stops unexpectedly when the plug is pulled out, or the contact area between the plug blade of the plug and the blade holder is reduced, resulting in contact resistance. There is a possibility that a problem arises that high heat is generated due to an increase in the temperature.

Therefore, various structures have been proposed in order to prevent such plugs from coming off. For example, Patent Document 1 has a structure in which a hook is provided in a plug, a hole into which a hook is fitted is provided in an outlet device (outlet), and the plug is prevented from being detached by fitting the hook of the plug into the hole of the outlet. Is disclosed. Further, in Patent Document 2, by connecting a plug to an outlet and rotating the plug by a predetermined angle, a protrusion provided on a receptacle of the outlet enters a through hole provided in a plug blade of the plug, and the plug is prevented from being detached. A structure is disclosed.
Japanese Utility Model Publication No. 4-102582 JP 2001-185289 A

  In the one shown in Patent Document 1, since the hook is inserted into the hole when the plug is connected to the outlet, like the one shown in Patent Document 2, it is possible to prevent the plug from coming off without rotating it by a predetermined angle. . Therefore, in what is shown in Patent Document 1, the retaining work can be easily performed. However, in the one shown in Patent Document 1, a fixed part such as a hook is essential for the plug, and if the fixed part is not provided for the plug, the plug cannot be prevented from coming off. On the other hand, the one shown in Patent Document 2 utilizes a through hole originally formed in a plug blade of a plug. Therefore, there is an advantage that it is possible to prevent the plug even if the plug is not provided with a special part for preventing the plug, such as a fixed part. It is not possible to connect such a plug.

  By the way, in what is shown in Patent Documents 1 and 2, the plug is firmly fixed to the plug receiving device. However, in view of safety, it is better that the plug is detached from the plug receiving device when an excessive external force is applied. There is a case. For example, in an electrical device such as a personal computer or a server that requires constant power supply, it is preferable that the plug is securely retained by the plug receiving device. However, for electrical equipment that has little effect even when power supply to a dryer or rice cooker is stopped, it is better to release the plug when the external force is applied. The merit of preventing disconnection and the fall of a person who has caught his / her foot on the cord exceeds the demerit that the power supply is stopped.

  The present invention has been made in view of the above points, and can prevent the plug from coming off regardless of the presence or absence of the fixed portion. When the plug has the fixed portion, an excessive external force is applied. It is an object of the present invention to provide a plug receiving device that can release the retaining member.

  In order to solve the above-mentioned problem, in the invention of claim 1, a body having a plug blade insertion hole on one side into which a plug blade of a plug is inserted, and a blade that is in contact with the plug blade inserted into the plug blade insertion hole Inserting a plug blade with an electrical connection portion having a receiving portion and a terminal portion connected to a power source, and a retaining portion that mechanically couples with the plug blade inserted into the plug blade insertion hole to prevent the plug from being removed. The hole is formed in a shape in which the plug can be rotated between an insertion / removal position where the plug blade of the plug can be inserted / removed in a plane parallel to the one surface and a removal position where the plug is prevented from being removed by the retaining portion, The body is provided with a fixing portion that constitutes a fixing means for fixing the plug at the insertion / extraction position, together with a fixed portion provided on the plug, and the fixing means has a predetermined value or more in a direction in which the plug and the body are separated from each other Fix the plug when force is applied Removal, characterized in that.

  According to the first aspect of the present invention, when a plug having a fixed portion is connected, the plug is fixed to the body by the fixed portion of the plug and the fixing portion of the body when the plug is positioned at the insertion / extraction position. The plug can be prevented from coming off and the plug can be prevented from coming off unexpectedly. Further, when a force of a predetermined value or more is applied in a direction in which the plug and the body are separated from each other, the fixing of the plug (preventing the plug from being removed) is released. Therefore, when a person gets caught in the plug cord and an excessive external force is applied, the plug is prevented from coming off, thereby preventing the plug from being damaged, the cord from being disconnected, or a person from falling. Can be safe. On the other hand, in the case of a plug that does not have a fixed portion, the plug is prevented from being detached by the retaining portion when the plug is rotated from the insertion / extraction position to the retaining position, so that the plug can be prevented from being unexpectedly detached. In this way, the plug can be prevented from coming off regardless of the presence or absence of the fixed portion, and when the plug has the fixed portion, the retaining can be released when an excessive external force is applied.

  According to a second aspect of the invention, in the first aspect of the invention, the body is attached to a wall surface of the building with the one surface facing downward, and the body has an insertion hole through which a cord connected to a plug is passed. The cover is movably attached between a closed position for closing the plug storage space formed on the one surface side of the body and an open position for opening the storage space and covering the body. And

  According to the second aspect of the present invention, the cover is positioned at the closed position to close the storage space, thereby preventing splashes from being applied to the blade receiving portion in the plug blade insertion hole of the body and the plug blade of the plug. can do. On the other hand, when the cover is positioned at the open position and the storage space is opened, the cover covers the body, so that the amount of protrusion from the wall surface of the cover does not increase compared to the closed position. Therefore, even when waterproofing is unnecessary, the cover does not get in the way and is easy to use.

  According to a third aspect of the present invention, in the second aspect of the present invention, the cover is rotatably attached to the body, and the rotation axis of the cover is parallel to the wall surface and in a plane perpendicular to the rotation axis. The outer peripheral shape is a fan shape centered on the rotation center of the cover.

  According to the invention of claim 3, the operation of the cover can be easily performed.

  According to a fourth aspect of the present invention, in the second aspect of the present invention, the insertion hole is formed in a size that allows the plug to pass therethrough, and the cover has a portion where the insertion hole is formed in the closed position. The closed surface is disposed so as to be opposed to the one surface with a predetermined distance, and at the open position, the portion where the insertion hole is formed is disposed to face the one surface of the body with a distance shorter than the predetermined distance. It is attached to the body so as to slide between a position and the open position.

  According to the invention of claim 4, the cover can be easily operated.

  According to a fifth aspect of the present invention, in the second or third aspect of the invention, the insertion hole is formed in a size that prevents the plug from passing therethrough, and includes a lock device that fixes the cover in the closed position. Features.

  According to the invention of claim 5, if the cover is fixed in the closed position by the locking device with the plug blade inserted into the plug blade insertion hole, the plug cannot be pulled out from the storage space. Therefore, it is possible to prevent the theft of an electric device or the like connected to the plug receiving device.

  According to a sixth aspect of the invention, in the first aspect of the invention, the terminal portion is formed of a plug separate from the body, and the terminal portion and the blade receiving portion are connected by a cord. To do.

  According to the invention of claim 6, it can be used as an extension cord.

  According to a seventh aspect of the present invention, in the invention according to any one of the first to sixth aspects, the fixed portion includes an elastic piece having elasticity in a direction intersecting the insertion / extraction direction of the plug, and a tip of the elastic piece. And a claw portion protruding in a direction crossing the insertion / extraction direction, and the fixing portion is formed of a locking piece for locking the claw portion of the fixed portion.

  According to the seventh aspect of the present invention, since the work of fixing the fixed part to the fixed part can be easily performed, the plug connecting work is facilitated.

  The invention according to claim 8 is the invention according to any one of claims 1 to 6, wherein one of the fixed part and the fixed part is a magnet, and the other of the fixed part and the fixed part is the magnet. It is characterized by comprising a material adsorbed on.

  According to the eighth aspect of the present invention, the work of fixing the fixed portion to the fixing portion can be easily performed, and therefore, the plug connecting operation becomes easy.

  According to the present invention, the plug can be prevented from coming off regardless of the presence or absence of the fixed portion, and when the plug has the fixed portion, the retaining is released when an excessive external force is applied, It is possible to prevent breakage, breakage of the cord, fall of a person, etc., and there is an effect that safety is high.

(Embodiment 1)
The plug receiving device 1 of the present embodiment is an outdoor outlet used for power supply from a commercial power source, and is attached to a wall surface (outer wall surface) W of a building (for example, a house) as shown in FIGS. The body 2 is provided.

  The body 2 includes a rectangular plate-like pedestal portion 3 attached to the wall surface W, and a container body 4 attached to the opposite side of the pedestal portion 3 from the wall surface W side (the right surface side in FIG. 2A). . Both the base part 3 and the container 4 are made of an insulating resin material.

  The vessel body 4 is formed in a fan-shaped box shape with a central angle of 90 degrees in cross section. The body 4 has one surface 4a corresponding to one of the fan-shaped radii directed to one end side in the longitudinal direction of the base 3 (the lower end side in FIG. 2A) and the other surface 4b corresponding to the other sector-shaped radius. Is attached to the other end side in the longitudinal direction of the front surface 3a of the pedestal 3 (the upper end side in FIG. 2A). In the illustrated example, the container 4 is sized to cover the upper half of the front surface 3 a of the base 3.

  As shown in FIG. 4B, a pair of plug blade insertion holes 40 a and 40 b for voltage electrodes and a plug blade insertion hole 40 c for ground electrodes are formed on one surface 4 a of the container body 4.

  Each of the plurality of plug blades 120a to 120c of the plug 120 (see FIGS. 5 and 6) is inserted into each of the plurality of plug blade insertion holes 40a to 40c. The plug blades 120a and 120b are plug blades for voltage electrodes, and the plug blade 120c is a plug blade for ground electrodes.

  Each plug blade insertion hole 40a, 40b, 40c is formed in a circular arc shape with a central angle smaller than 90 degrees, as shown in FIG. Therefore, after the plug 120 is connected to the plug receiving device 1, the plug 120 can be rotated by a predetermined angle in a plane parallel to the one surface 4 a of the container body 4. That is, the plug blade insertion holes 40a, 40b, and 40c are provided in a plane parallel to the one surface 4a of the container body 4, and an insertion / extraction position (described later) in which the plug blades 120a, 120b, 120c of the plug 120 can be inserted and extracted. The plug is formed so as to be rotatable between a later-described removal-preventing position where the plug is prevented from coming off by the portion. The pair of plug blade insertion holes 40a and 40b for the voltage electrode are located on substantially the same circumference, but the plug blade insertion hole 40c for the ground electrode is a pair of plug blade insertion holes 40a and 40b. It is located on a different circumference.

  On the other surface 4b of the container body 4, a wiring insertion hole (not shown) for inserting a wiring for a power source (commercial power source in the present embodiment) is formed. Correspondingly, an opening (not shown) for allowing the wiring insertion hole to face the outside is formed in the base portion 3.

  The container 4 houses an electrical connection portion 5 for electrically connecting the plug 120 to a power source (commercial power source). The electrical connection portion 5 includes a blade receiving portion 6 that is in contact with the plug blades 120a to 120c inserted into the plug blade insertion holes 40a to 40c, and a terminal portion (not shown) connected to a power source. . The blade receiver 6 includes a pair of blade receivers 6a and 6b for a voltage electrode and a blade receiver 6c for a ground electrode. The pair of blade receptacles 6a and 6b for the voltage electrode correspond to the pair of plug blade insertion holes 40a and 40b, respectively, and the blade receptacle 6c for the ground electrode is accommodated in the container 4 in a form corresponding to the plug blade insertion hole 40c. ing.

  One blade receiver 6a for the voltage electrode has a pair of blade receiving springs 60a that sandwich the plug blade 120a. Here, one blade receiving spring (the blade receiving spring that is in contact with the surface of the plug blade 120a opposite to the other plug blade 120a side) 60a is a cross-sectional shape in a plane parallel to the one surface 4a of the vessel body 4 Is formed in a circular arc shape. The other blade receiving spring (the blade receiving spring in contact with the surface facing the other plug blade 120a in the plug blade 120a) 60a has two surfaces facing the one blade receiving spring 60a. A locking protrusion 61a for preventing the plug 120 from coming off is provided on the surface. The locking projection 61a is formed to have a size that fits into a locking hole (through hole) (not shown) of the plug blade 120a of the plug 120.

  Further, the other blade receiver 6b for the voltage electrode has a pair of blade receiving springs 60b that sandwich the plug blade 120b, similarly to the one blade receiver 6a. One blade receiving spring 60b is formed such that a cross-sectional shape in a plane parallel to the one surface 4a of the container body 4 is an arc shape. The other blade receiving spring 60b is provided with a locking projection 61b in the same manner as the other blade receiving spring 60a of the blade receiving 6a. The locking projections 61b are the same as the locking projections 61a, and these locking projections 61a and 61b constitute the aforementioned retaining portions.

  The blade receiver 6c for the ground electrode has a pair of blade receiving springs 60c that sandwich the plug blade 120c of the plug 120, and each of the pair of blade receiving springs 60c is in a plane parallel to the one surface 4a of the container body 4. The cross-sectional shape is formed in an arc shape.

  As described above, the pair of blade receiving portions 6a and 6b for the voltage electrode are provided with the locking projections 61a and 61b constituting the retaining portion for retaining the plug 120. Therefore, the plug 120 is connected to the plug receiving device 1 at any one of the above-described insertion / extraction position and the above-described prevention position. Then, the insertion / extraction position and the removal prevention position can be switched by rotating the plug 120 in a plane parallel to the one surface 4a of the container body 4. In addition, the shape of each blade receiver 6a-6c is suitably set according to the specification of the plug 120 assumed use. In addition, the terminal portion includes, for example, a pair of fast connection terminals for power supply to which power supply wiring is connected and a quick connection terminal for grounding to which a ground line is connected. Since such an electrical connection part can employ | adopt a conventionally well-known thing, detailed description is abbreviate | omitted.

  As shown in FIG. 1B, the plug receiving device 1 of the present embodiment has an opening 40d into which the lock piece 121 is inserted so that the plug 120 having the lock piece 121 can be connected. Yes. 40 d of opening parts are formed in the one surface 4a of the container 4 so that the lock piece 121 may be inserted when the plug 120 is an insertion / extraction position.

  Here, the lock piece 121 is provided on the outer surface of the plug 120 as shown in FIG. The lock piece 121 has a long elastic piece 121a whose longitudinal direction is the direction along the insertion / extraction direction of the plug 120 (the left-right direction in FIG. 1B). 5 and 7, the illustration of the lock piece 121 is omitted.

  The elastic piece 121a is formed so as to have elasticity in a direction crossing the insertion / extraction direction of the plug 120. The length of the elastic piece 121a is a length that protrudes outward from the front surface of the plug 120 (the surface on which the plug blades 120a to 120c protrude, the left surface in FIG. 1B). A claw portion 121b for fixing the plug 120 to the plug receiving device 1 is provided at the tip of the elastic piece 121a. The claw portion 121b is formed in a cross-sectional triangle shape whose size in the insertion / removal direction becomes smaller as it protrudes, and the protrusion direction is opposite to the plug 120 side of the elastic piece 121a (projects in a direction crossing the insertion / extraction direction). It is. A pressing protrusion 121c for easily bending the elastic piece 121a is formed on the middle part of the elastic piece 121a.

  A locking piece 40e for locking the claw portion 121b of the locking piece 121 inserted into the opening 40d is provided on the inner surface of the opening 40d. Therefore, when the plug blades 120a to 120c of the plug 120 are inserted into the plug blade insertion holes 40a to 40c, the lock piece 121 is also inserted into the opening portion 40d. As shown in FIG. When the connection to the plug receiving device 1 is completed, the claw portion 121b of the lock piece 121 is locked by the locking piece 40e in the opening portion 40d, and the plug 120 is prevented from coming off.

  Therefore, the body 2 is provided with a locking piece 40e serving as a fixing portion that constitutes a fixing means for fixing the plug 120 at the insertion / extraction position, together with a locking piece 121 serving as a fixed portion provided on the plug 120.

  When the plug 120 is pulled out from the plug receiving device 1, the elastic piece 121a is deformed so that the tip of the elastic piece 121a approaches the plug 120 by pressing the pressing projection 121c, and the nail by the locking piece 40e. What is necessary is just to cancel | release the latching state of the part 121b.

  Further, since the elastic piece 121a has elasticity, when a force of a predetermined value or more is applied in a direction in which the plug 120 and the body 2 are separated from each other (a direction in which the plug 120 is relatively separated from the body 2). The elastic piece 121a is deformed by such a force, and the locking state of the claw portion 121b by the locking piece 40e is released (the fixing of the plug 120 is released).

  That is, the fixing means releases the fixing of the plug 120 when a force of a predetermined value or more is applied in a direction in which the plug 120 and the body 2 are separated from each other. Here, the predetermined value is determined by the plug 120 before the plug 120 or the plug receiving device 1 is damaged, the cord 102 is disconnected, or a person who has caught his / her foot on the cord 102 falls. It is set to a value that leaves 1. The predetermined value is determined by the rigidity of the elastic piece 121a, the shape of the claw portion 121b (particularly the angle of the contact surface with the locking piece 40e), and the like.

  As described above, the plug receiving device 1 according to this embodiment includes the body 2 having the plug blade insertion holes 40a to 40c into which the plug blades 120a to 120c of the plug 120 are inserted, and the plug blade insertion holes 40a to 40c. An electrical connection part 5 having a terminal part connected to a blade receiving part 6 and a power source, which are in contact with the plug blades 120a to 120c inserted into the plug blades, and plug blades 120a, 120b inserted into the plug blade insertion holes 40a, 40b; Locking protrusions 61a and 61b are provided that serve as retaining portions that mechanically couple to prevent the plug 120 from coming off. Each plug blade insertion hole 40a to 40c has a plug 120 that prevents the plug 120 from being removed by the insertion and removal positions where the plug blades 120a to 120c of the plug 120 can be inserted and removed and the locking projections 61a and 61b in a plane parallel to the one surface 4a of the container body 4. The plug 120 is formed so as to be rotatable between the position where it is removed.

  The body 2 is provided with a locking piece 121 as a fixed portion provided in the plug 120 and a locking piece 40e as a fixing portion constituting a fixing means for fixing the plug 120 at the insertion / extraction position. This fixing means releases the fixing of the plug 120 when a force of a predetermined value or more is applied in a direction in which the plug 120 and the body 2 are separated from each other (a direction in which the plug 120 is relatively separated from the body 2).

  Therefore, according to the plug receiving device 1 of the present embodiment, when the plug 120 having the lock piece 121 is connected, the lock piece 121 of the plug 120 and the locking piece of the body 2 when the plug 120 is positioned at the insertion / extraction position. Since the plug 120 is fixed to the body 2 by 40e, the plug 120 can be prevented from coming off, and the plug 120 can be prevented from coming off unexpectedly. Further, when a force of a predetermined value or more is applied in the direction in which the plug 120 and the body 2 are separated from each other, the fixing of the plug 120 (preventing the plug from being removed) is released. Therefore, when an excessive external force acts on the cord 102 of the plug 120 due to an excessive external force, the plug 120 is prevented from coming off, and therefore, the plug 120 is damaged, the cord 102 is disconnected, or the person falls. Can be prevented, and is highly safe.

  On the other hand, in the case of the plug 120 that does not have the lock piece 121 (the plug 120 that does not have the lock piece 121 is assumed to be a plug that is widely distributed according to standards such as JIS). Since the locking projections 61a and 61b, which are the retaining portions when rotated to the retaining position, are prevented from being detached, it is possible to prevent the plug 120 from being unexpectedly detached.

  In this way, the plug 120 can be prevented from coming off regardless of the presence or absence of the lock piece 121, and when the plug 120 has the lock piece 121, it can be released when excessive external force is applied. it can.

  Further, in the plug receiving device 1 of the present embodiment, the lock piece 121 and the locking piece 40e constitute a fixing means, and the lock piece 121 is simply inserted into the opening portion 40d so that the lock piece 121 is locked into the locking piece 40e. Therefore, the operation of fixing the lock piece 121 to the engagement piece 40e can be easily performed, so that the connection work of the plug 120 is facilitated. Furthermore, in the plug receiving device 1 of the present embodiment, the opening 40d into which the lock piece 121 is inserted is provided on the side opposite to the plug blade insertion hole 40c side with respect to the rotation center of the plug 120. An area necessary for rotating 120 is narrowed.

  By the way, as a fixing means, in addition to the above-described one composed of the lock piece 121 and the locking piece 40e, one utilizing magnetic force can be employed. Such a fixing means is, for example, provided with a plate-like fixing portion made of a magnet (permanent magnet) on one surface 4a of the container body 4, and a magnet on the front surface of the plug 120 (surface on which the plug blades 120a to 120c protrude). This can be realized by providing a plate-like fixed portion made of an adsorbed material (magnetic material). If such a fixing means using magnetic force is used, the operation of fixing the fixed portion to the fixing portion can be easily performed, so that the plug 120 can be easily connected. In this case, the predetermined value can be set according to the strength of the magnet. Further, instead of using the fixed portion as a magnet, the fixed portion may be a magnet. In short, one of the fixed portion and the fixed portion is a magnet, and the other of the fixed portion and the fixed portion is attracted to the magnet. Any material may be used.

  By the way, the body 2 of the plug receiving apparatus 1 of this embodiment is attached to the wall surface W of a building in the form in which the one surface 4a of the container body 4 faces downward. Therefore, in the following description, for simplification of description, one surface side of the base part 3 in the thickness direction (left-right direction in FIG. 2A) is the front side (right side in FIG. 2A), and the base part 3 The other side of the thickness direction is the rear side (the left side in FIG. 2A), the one end side in the longitudinal direction of the base 3 (the vertical direction in FIG. 2A) is the upper side (the upper side in FIG. 2A), The other end side in the longitudinal direction of the base part 3 will be described as the lower side (the lower side in FIG. 2A).

  By the way, in the plug receiving device 1, as shown in FIGS. 2 and 3, a storage space S for the plug 120 is secured on the one surface 4 a side of the container body 4 so that the plug 120 can be connected. The plug receiving device 1 includes a cover 7 that closes the storage space S.

  The cover 7 is made of, for example, an insulating resin material. The cover 7 is integrally provided with a pair of side plate portions 70 that face each other in the short direction of the base portion 3 (left and right direction in FIG. 3A) and a connecting portion 71 that connects the pair of side plate portions 70 to each other. ing. Here, the outer peripheral shape of the side plate portion 70 in a plane perpendicular to the short direction of the base portion 3 (in the paper plane in FIG. 2A) is a sector shape with a central angle of 90 degrees. The connecting portion 71 connects the pair of side plate portions 70 at the arc portion of the fan-shaped side plate portion 70. Such a cover 7 can accommodate the container 4 (see FIG. 2B), the outer peripheral shape of the side plate portion 70, the distance between the pair of side plate portions 70, the thickness of the connecting portion 71, and the like. Is set.

  Further, a columnar shaft portion 50 a for attaching the cover 7 to the body 2 protrudes on the inner surface side of the side plate portion 70 (on the side facing the other side plate portion 70). The shaft portion 50 a is formed at the central portion of the fan-shaped side plate portion 70. Further, the central axes of the shaft portions 50a of the side plate portions 70 coincide with each other. On the other hand, the vessel body 4 is formed with a bearing portion 41 for pivotally supporting the shaft portion 50a. The bearing portions 41 are formed on both side surfaces of the container body 4 in the short direction of the base portion 3. Therefore, the cover 7 is attached to the container body 4 in a rotatable manner by fitting the shaft part 50a into each of the two bearing parts 41 of the container body 4. Here, since the direction of the rotation axis of the cover 7 is a direction along the short direction of the base 2, the rotation axis of the cover 7 is parallel to the wall surface W.

  The range in which the cover 7 is rotatable surrounds the plug 120 in which the plug blades 120a to 120c are inserted into the plug blade insertion holes 40a to 40c of the container body 4 (closes the storage space S) (see FIG. 2A). ) And FIG. 3 (a)) and the open position (see FIG. 2 (b) and FIG. 3 (b)) surrounding the container 4 of the body 2 (not closing the storage space S). In the closed position, the end surface 7a of the cover 7 corresponding to one radius of the fan-shaped side plate portion 70 abuts on the lower end portion of the front surface 3a of the base 3, and in the open position, the cover corresponding to the radius of the fan-shaped side plate portion 70. 7 is in contact with the upper end of the front surface 3 a of the base 3.

  Here, the connecting portion 71 of the cover 7 is formed with an insertion hole 72 through which the cord 102 connected to the plug 120 passes in a portion facing the plug blade insertion holes 40a to 40c in the closed position. The insertion hole 72 communicates with the outside in the direction from the open position to the closed position so that the cord 102 enters the insertion hole 72 in the process of rotating the cover 7 from the open position to the closed position (FIG. 4 ( a), see (b)). In the present embodiment, the size of the insertion hole 72 is a size that allows the cord 102 to pass therethrough but cannot pass the plug 120.

  Therefore, when the cover 7 is in the open position, the cover 7 covers the container 4 and the storage space S is open, so that the plug 120 can be freely attached to and detached from the plug receiving device 1. On the other hand, when the cover 7 is in the closed position, the cover 7 closes the storage space S and the size of the insertion hole 72 is such that the plug 120 cannot be passed through. The plug 120 cannot be attached or detached.

  As described above, in the plug receiving device 1 of the present embodiment, the cord 102 connected to the plug 120 is attached to the body wall W attached to the wall W of the building with the one surface 4a provided with the plug blade insertion holes 40a to 40c facing downward. A cover 7 having an insertion hole 72 through which it passes is attached so as to be movable between a closed position that closes the storage space S and an open position that opens the storage space S and covers the body 4 of the body 2.

  Therefore, the plug 120 can be enclosed by positioning the cover 7 in the closed position to close the storage space S, and splashes can be enclosed in the blade receiving portions in the plug blade insertion holes 40 a to 40 c of the body 2 and the plugs of the plug 120. It is possible to prevent the blades 120a to 120c from being applied. On the other hand, when the cover 7 is positioned at the open position and the storage space S is opened, the cover 7 covers the container 4 of the body 2, so that the amount of protrusion of the cover 7 from the wall surface W is larger than that at the closed position. It will never become. Therefore, even when waterproofing is not necessary, the cover 7 does not get in the way and is easy to use.

  In particular, the cover 7 is rotatably attached to the container 4 of the body 2, the rotation axis of the cover 7 is parallel to the wall surface W, and the outer peripheral shape of the cover 7 in the plane perpendicular to the rotation axis is the cover 7. It is fan-shaped around the center of rotation. Therefore, the protrusion amount of the cover 7 from the wall surface W is equal in both the closed position and the open position. Further, since the closed position and the open position can be switched simply by rotating the cover 7, the cover 7 can be easily operated.

  5 and 6, an electric vehicle charging cord set (hereinafter abbreviated as “cord set”) 100 is shown as a device connected to the plug receiving device 1.

  The cord set 100 is a power cord set used for connecting an outlet corresponding to an AC power source and an inlet of an electric vehicle. Here, the electric vehicle refers to a vehicle on which a battery (secondary battery) and an electric motor (motor) are mounted. This includes a so-called hybrid car in which an internal combustion engine (gasoline engine) and an electric motor are mounted, and a plug. Includes in-hybrid cars.

  The inlet of the electric vehicle adopts a suitable shape and structure according to the standard of the battery mounted on the electric vehicle. In the present embodiment, it is assumed that a charging device (not shown) for charging the battery by converting AC power to DC power is mounted on the electric vehicle, and the inlet corresponds to AC. That is, the inlet of the electric vehicle is configured to be connectable to an AC power source (for example, AC 200V commercial power source having a frequency of 50 Hz or 60 Hz), and a pair of terminals connected to a pair of voltage electrodes of the AC power source ( And a ground electrode terminal (not shown).

  As shown in FIG. 6, the cord set 100 includes a cord 102 used for connecting a power source, a cord 103 used for connecting a load, and a shut-off device 104 inserted therebetween.

  The cord 102 has a three-core structure in which three insulation-coated electric wires 102a to 102c are arranged in one insulation tube (not shown), and the insulation-coated electric wires 102a and 102b are used to connect voltage electrodes. The insulated wire 102c is used for connection of the ground electrode. A plug 120 is provided at one end of the cord 102. As described above, the plug 120 includes the pair of plug blades 120a and 120b for the voltage electrode and the plug blade 120c for the ground electrode. Each of the three plug blades 120a, 120b, 120c is connected to one end of each of the three insulation-coated electric wires 102a, 102b, 102c of the cord 2.

  Similar to the cord 102, the cord 103 is a three-core type in which three insulation coated wires 103a to 103c are arranged in one insulation tube (not shown). The insulation-coated electric wire 103c is used for connecting the ground electrode for connecting the voltage electrode. A connector 130 is provided at one end of the cord 103. The connector 130 is for connection to an inlet of an electric vehicle, and a pair of terminals 130a and 130b connected to a pair of voltage electrode terminals of the inlet and a terminal 130c connected to a ground electrode terminal. And. Each of the three terminals 130 a, 130 b, and 130 c of the connector 130 is connected to one end of each of the three insulation-coated wires 103 a, 103 b, and 103 c of the cord 103.

  The circuit breaker 104 has a function as an earth leakage circuit breaker and includes a pair of terminal portions 140 and 141. One terminal portion 140 has three terminals 140a, 140b, and 140c, and each of the three terminals 140a, 140b, and 140c has the other end of each of the three insulation-coated wires 102a, 102b, and 102c of the cord 102. Is connected. The terminal part 140 is used as a power connection terminal part for connecting to an AC power source. The other terminal portion 141 has three terminals 141a, 141b, and 141c, and the other terminals of the three insulation-coated electric wires 103a, 103b, and 103c of the cord 103 are respectively connected to the three terminals 141a, 141b, and 141c. Is connected. The terminal part 141 is used as a load connection terminal part for connecting to an electric vehicle as a load.

  The pair of terminal portions 140 and 141 are electrically connected by an electrical connection portion 142. The electrical connection unit 142 includes an electrical circuit 142a that connects the terminal 140a and the terminal 141a, an electrical circuit 142b that connects the terminal 140b and the terminal 141b, and an electrical circuit 142c that connects the terminal 140c and the terminal 141c. In the electrical connection portion 142, contact portions 143a and 143b are inserted into power supply electric paths 142a and 142b used for power supply, respectively. The contact parts 143a and 143b are mechanical contacts composed of a fixed contact and a movable contact that contacts and separates from the fixed contact. The contact parts 143a and 143b are used to turn on / off the power supply to the electric vehicle. 143 is configured. That is, if the opening / closing part 143 is closed (if both contact parts 143a, 143b are closed), it is possible to supply power to the electric vehicle through the electric paths 142a, 142b for feeding, and if the opening / closing part 143 is open. (If both contact portions 143a and 143b are open), the electric paths 142a and 142b for power supply are cut off and power is not supplied to the electric vehicle.

  The shut-off device 104 includes an opening / closing mechanism unit 144 that opens and closes the opening / closing unit 143 and a control unit 145 that controls the opening / closing mechanism unit 144.

  The opening / closing mechanism 144 includes, for example, various types of terminals such as a fixed terminal plate to which the fixed contacts of the contact portions 143a and 143b of the opening / closing unit 143 are fixed, a movable contact to which the movable contact is fixed, a spring material, and a locking member. The members are mechanically coupled, and the opening / closing unit 143 is opened / closed in accordance with a control signal supplied from the control unit 145. Since this type of opening / closing mechanism 144 can be a conventionally known one, a detailed description thereof will be omitted.

  The control unit 145 is, for example, a microcomputer (microcontroller, abbreviated as a microcomputer, also referred to as a CPU in a broad sense), and executes various processes described later by executing a program stored in a memory with the CPU. . The control unit 145 determines whether or not a leakage has occurred based on the detection output of the zero-phase current transformer 146 that detects whether or not an unbalanced current is generated in the power supply paths 142a and 142b. Execute. If it is determined that leakage has occurred as a result of the processing, the control unit 145 controls the opening / closing mechanism unit 144 so that the opening / closing unit 143 is opened. As a result, the pair of terminal portions 140 and 141 are cut off so that power is not supplied from the AC power source to the electric vehicle. On the other hand, if it is determined that no leakage has occurred, the control unit 145 controls the opening / closing mechanism unit 144 so that the opening / closing unit 143 is closed, so that power is supplied from the AC power source to the electric vehicle.

  The control unit 145 also opens and closes the opening / closing mechanism unit 144 based on the detection result of the temperature sensor 147 that detects the temperature of the cord 103 stored in the storage unit 106 described later (the ambient temperature may be used instead of the temperature of the code 103 itself). Execute the process to control. In this process, the control unit 145 controls the opening / closing mechanism unit 144 so that the opening / closing unit 143 is opened when the temperature detected by the temperature sensor 147 is equal to or higher than a predetermined temperature. As a result, the pair of terminal portions 140 and 141 are cut off so that power is not supplied from the AC power source to the electric vehicle. On the other hand, if the temperature is lower than the predetermined temperature, the control unit 145 controls the opening / closing mechanism unit 144 so that the opening / closing unit 143 is closed so that electric power is supplied from the AC power source to the electric vehicle. Here, the above-mentioned predetermined temperature is determined based on the melting point of the insulating coating material of the insulating coated electric wire constituting the cord 103 and the insulating material (such as vinyl) which is the material of the insulating tube. Before melting out, the temperature is set to a temperature at which the electric paths 142a and 142b can be cut off.

  As described above, the breaker 104 has a function of interrupting power supply by interrupting the pair of terminal portions 140 and 141 when a leakage occurs, and a pair of cords 103 in the case where there is a risk of melting the insulation coating or the insulation tube. It has a function of shutting off power supply by shutting off between the terminal portions 140 and 141.

  In addition, the shut-off device 104 includes a power supply unit 148 for supplying power for driving the control unit 145. The power supply unit 148 is configured by a regulator or the like. Each input terminal (not shown) of the power supply unit 148 is connected between the terminals 140a and 140b and the contact points 143a and 143b in the electric paths 142a and 142b, and even when the contact points 143a and 143b are opened, AC The power supply can be received from the power source.

  The blocking device 104 described above is housed in a housing 105 as shown in FIGS. In the following, for simplification of description, the vertical direction in FIG. 5A is the height direction of the casing 105, the horizontal direction in FIG. 5A is the width direction of the casing 105, and FIG. The normal direction of the paper surface in FIG.

  The casing 105 is formed in a rectangular parallelepiped box shape having substantially the same height and width dimensions, and having a thickness direction dimension smaller than the height direction dimension. A first opening (not shown) for passing the cord 102 is provided on one side surface (the left side surface in FIG. 5A) of the casing 105 in the width direction. That is, the other end of the cord 102 is connected to the terminal portion 140 of the blocking device 104 in the housing 105, and one end of the cord 102 is pulled out of the housing 105 through the opening portion. In addition, since the length of the cord 102 inserted between the plug receiving device 1 and the breaker 104 as the earth leakage breaker is determined to be 10 cm to 30 cm by the UL (Underwriters Laboratories Inc) standard, The length is determined within this range.

  On one surface side of the casing 105 in the thickness direction (the left surface in FIG. 5B), a storage portion 106 that can store the cord 103 in a removable manner is provided.

  The storage unit 106 includes a drum 160 around which the cord 103 is wound. The drum 160 is formed in a cylindrical shape with a perfect cross section, and is rotatable to one surface side in the thickness direction of the casing 105 with the central axis as a rotation axis in a state where the central axis direction is along the thickness direction of the casing 105. Is attached. A circular disc portion 161 is provided on the opposite side of the drum 160 from the housing 105 side (left side in FIG. 5B), and the central axis of the disc portion 161 coincides with the central axis of the drum 160. ing. A knob 161a for manually rotating the drum 160 protrudes from an edge of the disk portion 161 opposite to the drum 160 side (left side in FIG. 5B). In addition, the disk portion 161 has a circular inner shape (a slightly larger circular shape than the outer peripheral shape of the disk portion 161) and a frame portion 162 that is a frame body having a rectangular outer peripheral shape. It is supported. The outer size of the frame portion 162 is formed to be the same size as one surface in the thickness direction of the housing 105. The frame portion 162 is attached to the housing 105 by a connecting portion 163 having a bar shape (in the illustrated example, a round bar shape). There are four connecting portions 163 in total, and are located at the four corners of the frame portion 162.

  A second opening (not shown) for passing the cord 103 is provided on one surface in the thickness direction of the housing 105, and one end of the cord 103 is accommodated in the storage portion 106 from the second opening. Pulled out to the side. The other end of the cord 103 is connected to the other terminal portion 141 of the shut-off device 104 in the housing 105, whereby the cord 103 is connected to the cord 102 via the shut-off device 104. The cord 103 drawn from the housing 105 is wound around the outer peripheral surface of the drum 160 (the outer peripheral surface in the plane orthogonal to the rotation axis). Therefore, the length of the cord 103 that can be pulled out from the storage unit 106 can be adjusted according to the rotation of the drum 160.

  On one surface in the height direction of the housing 105 (the lower surface in FIG. 5A), a stand 107 serving as a base for stably placing the housing 105 on the ground is provided. The stand 107 is made of, for example, metal, and has a pair of legs 107a and 107a arranged in the width direction of the housing 105 at a predetermined interval with a thickness direction of the housing 105 being a longitudinal direction, One end of the foot 107a (the end on the side of the housing 105) is connected to one surface in the height direction of the housing 105, and the other end of the pair of the foot 107a (the housing 106 side). And a connecting portion 107c for connecting the end portions) to each other. As such a stand 107, a suitable one is adopted in consideration of the position of the center of gravity of the cord set 100 and the like.

  On the other hand, a carrying handle 108 is provided on the other surface in the height direction of the housing 105 (the upper surface in FIG. 5A). The handle 108 is made of, for example, metal, and has a pair of side portions 108a and 108a arranged in the width direction of the housing 105 at a predetermined interval with a thickness direction of the housing 105 being a longitudinal direction, A pair of connecting portions 108b for connecting one end portion of the side portion 108a (the end portion on the housing 105 side) to the other surface in the height direction of the housing 105, and the other end portion (the storage portion 106) of the pair of side portions 108a. And a grip portion 108c for connecting the end portions on the side. Such a handle 108 is designed so that the height direction of the housing 105 is in a direction along the vertical direction when carrying it in consideration of the position of the center of gravity of the cord set 100 in consideration of easiness to carry.

  Further, a holding portion 109 is provided on one surface side in the height direction (the lower surface side in FIG. 5A) on the other surface in the width direction of the housing 105 (the right surface in FIG. 5A). The holding part 109 is for holding the connector 130, and is formed in a box shape in which the other side in the height direction of the housing 105 (the upper side in FIG. 5B) is opened. Therefore, the connector 130 is held by the holding portion 109 by inserting the tip of the connector 130 into the holding portion 109 through the opening. The shape of the holding portion 109 is not limited to the above example, and any shape can be used as long as the tip of the connector 130 can be held so as not to reach the ground.

  In using the cord set 100, the cord set 100 is carried to a desired position by holding the handle 108 and placed at a desired position by the stand 107. Thereafter, the plug 120 of the cord 102 may be connected to the plug receiving device 1 and the connector 130 may be connected to the inlet of the electric vehicle. Here, when connecting the connector 130 to the inlet of the electric vehicle, the connector 130 may be removed from the holder 109 and the cord 103 may be pulled out from the storage portion 106 as much as necessary. When the cord 103 is pulled out too much, the picking portion 161 a is held, the drum 160 is rotated in the direction in which the cord 103 is wound, and the extra length of the cord 103 is pulled into the storage portion 106.

  As described above, according to the cord set 100, the cord 103 can be used by being pulled out from the storage portion 106 as much as necessary (the extra length portion of the cord 103 can be accommodated). Is not placed on the ground, so that it is possible to prevent a person from being caught by the extra length of the cord 103 and toppling over, so that it can be used safely, and the appearance is clean and good-looking. In addition, since the handle 108 can be carried and can be stably placed on the ground by the stand 107, it is easy to use. In particular, since the cord 103 can be stored in the storage portion 106, it is easy to carry.

  Further, the connector 130 can be held by the housing 105. Therefore, it is possible to prevent the occurrence of problems such as the disconnection of the cord 103 due to the hanging of the connector 130 and the intrusion of water when the connector 130 is left on the ground. Further, when the temperature detected by the temperature sensor 147 becomes equal to or higher than a predetermined temperature, the pair of terminal portions 140 and 141 are cut off, so that no current flows through the cord 103. Therefore, it can be prevented that the temperature of the cord 103 is excessively increased and the insulating coating of the cord 103 is melted to expose the conductive wire.

  Note that another example of such a code set 100 is shown in FIG. A cord set 100 shown in FIG. 7 includes a rectangular parallelepiped housing 105 in which the above-described blocking device 104 (not shown in FIG. 7) is housed, a plug 120 provided at one end, and the other end being one terminal of the blocking device 104. The cord 102 connected to the portion 140 and the connector 130 (not shown in FIG. 7) connected to the inlet of the electric vehicle are provided at one end and the other end is connected to the other terminal portion 141 of the shut-off device 104. And. The cord set 100 shown in FIG. 7 is different from the cord set 100 shown in FIGS. 5 and 6 and does not include the storage unit 106, the stand 107, the handle 108, and the holder 109, so adjusting the length of the cord 103 is not possible. Can not. Further, since the storage unit 106 is not provided, the shut-off device 104 is not provided with the temperature sensor 147 and a function related to the temperature sensor 147.

  By the way, the configuration of the plug receiving device 1 of the present embodiment is not limited to the above, and may be, for example, the configuration shown in FIG. Here, the plug 120 shown in FIG. 8 has a locking piece 121 similar to the one shown in FIG. 1B, but unlike the one shown in FIG. It does not protrude forward from the front surface but protrudes from the outer surface of the plug 120.

  The plug receiving device 1 shown in FIG. 8 corresponds to the plug 120 shown in FIG. 8, and the configuration of the container 4 is different from that shown in FIG.

  That is, in the container body 4 shown in FIG. 8, a recess 40f is formed on the one surface 4a so that the distal end portion (front end portion) of the plug 120 can rotate between the insertion / extraction position and the removal prevention position. The plug blade insertion holes 40a to 40c are opened in the bottom surface of the recess 40f. Further, an opening 40d into which the claw portion 121b of the lock piece 121 enters at the insertion / extraction position is formed on the inner peripheral surface of the recess 40f, and between the opening 40d and the one surface 4a of the container body 4 is formed. A part becomes the locking piece 40e which locks the nail | claw part 121b.

  When the plug 120 shown in FIG. 8 is used, the plug blades 120a to 120c of the plug 120 are inserted into the plug blade insertion holes 40a to 40c opened in the bottom surface of the recess 40f, and the front end of the plug 120 is inserted into the recess 40f. When inserted, the claw portion 121b of the lock piece 121 is locked by the locking piece 40e, and the plug 120 is prevented from coming off.

  Therefore, in the example shown in FIG. 8 as well, the locking piece 121 and the locking piece 40e cause a force greater than a predetermined value in the direction in which the plug 120 and the body 2 are separated from each other (the direction in which the plug 120 is relatively separated from the body 2) The fixing means is configured to release the fixing of the plug 120 when applied.

  On the other hand, if the plug 120 does not have the lock piece 121, the plug blades 120a to 120c of the plug 120 are inserted into the plug blade insertion holes 40a to 40c opened in the bottom surface of the recess 40f, and the plug 120 is inserted. After the front end portion of the plug 120 is inserted into the recess 40f, the locking protrusions 61a and 61b are fitted into the locking holes of the plug blades 120a and 120b of the plug 120 by rotating the predetermined angle and positioning it at the retaining position. The plug 120 is prevented from coming off.

  By the way, the cover 7 may be provided with a plug stopper portion 73 as shown in FIG. The plug stopper portion 73 is provided in the vicinity of the insertion hole 72 on the inner surface side of the connecting portion 71 so as to face the plug 120 below the plug 120 when the cover 7 is in the closed position. If such plug stopper portion 73 is provided, the plug 120 will hit the plug stopper portion 73 when the plug 120 is pulled out when the cover 7 is in the closed position. Therefore, it is possible to prevent the plug 120 from being detached from the plug receiving device 1.

  Further, as shown in FIG. 10, the cover 7 may be provided with a waterproof door 74 that closes the insertion hole 72. The waterproof door 74 is made of an elastic material (for example, an elastomer such as rubber) and is provided on both sides of the insertion hole 72 in the short direction (vertical direction in FIG. 10). The waterproof door 74 is deformed by the cord 102 so that the gap between the waterproof doors 74 is increased in the process of moving the cover 7 from the open position to the closed position. As a result, the cord 102 is pulled out from the storage space S through the gap between the waterproof doors 74. On the other hand, if the cover 7 is moved from the closed position to the open position, the cord 102 is withdrawn from the gap between the waterproof doors 74, so that the waterproof door 74 returns to the original shape shown in FIG. By providing such a waterproof door 74, it is possible to prevent splashes from entering the storage space S through the insertion hole 72, thereby further improving the waterproof property.

  Moreover, the plug receiving apparatus 1 may be provided with the lock apparatus 8 which fixes the cover 7 to a closed position, as shown to Fig.11 (a), (b). Such a locking device 8 includes, for example, a housing 80 having a lock surface provided with an in / out hole (not shown) for a dead bolt (not shown). The housing 80 is attached to the pedestal 3 such that the cover 7 and the lock face in the closed position face each other. The casing 80 is provided with a dead bolt that can be protruded and retracted through a retractable hole. In addition, the casing 80 is provided with a cylinder lock 81 for performing a dead bolt in / out operation using a key.

  On the other hand, the cover 7 is formed with a notch 75 for preventing interference with the housing 80 of the lock device 8. Further, a recess (not shown) into which the dead bolt of the lock device 8 is inserted and removed is formed on the surface of the cover 7 that faces the lock surface of the housing 80 in the closed position. Therefore, if the dead bolt is protruded from the intrusion hole of the housing 80 by operating the cylinder lock 81 of the lock device 8 with the cover 7 being in the closed position, the protruded dead bolt is formed in the recess of the cover 7. The cover 7 is fixed in the closed position. On the other hand, when the cylinder lock 81 is operated so that the dead bolt is inserted into the intrusion hole, the cover 7 is released.

  In the present embodiment, since the size of the insertion hole 72 is such that the plug 120 cannot pass through, the plug blades 120a to 120c of the plug 120 are inserted into the plug blade insertion holes 40a to 40c (the plug 120 is plugged). If the cover 7 is fixed to the waterproof position by the lock device 8 in a state of being connected to the receiving device 1, the plug 120 cannot be pulled out from the storage space S. Therefore, it is possible to prevent the theft of the electric equipment connected to the plug receiving device 1 by the plug 120.

  In the plug receiving device 1 of the present embodiment, the locking projections 61a and 61b provided on the pair of voltage receiving blades 6a and 6b constitute a retaining portion. However, the retaining portion only needs to be mechanically coupled to the plug blades 120a to 120c inserted in the plug blade insertion holes 40a to 40c to prevent the plug 120 from being detached. For example, it is defined in JIS. It may be a hook receiving part for hooking the hook-shaped stopper blade. That is, as the retaining portion of the plug receiving device 1, one that is generally widely used according to a standard such as JIS can be adopted.

(Embodiment 2)
As shown in FIGS. 12 and 13, the plug receiving device 1 of the present embodiment is different from the first embodiment in the configuration of the container 4 and the cover 7. Other configurations (the electrical connection portion 5 housed in the base portion 3 and the container body 4) are the same as those in the first embodiment, and thus the description thereof is omitted.

  As shown in FIGS. 12A and 12B, the container 4 in the present embodiment is formed in a rectangular parallelepiped box shape. On the one surface 4a side of the container body 4, plug blade insertion holes 40 a to 40 c, an opening portion 40 d, and a locking piece 40 e are provided as in the first embodiment (see FIG. 1A), and the body 2 Is attached to the wall surface W with the one surface 4a facing downward. In the present embodiment also, for the sake of simplification of explanation, one surface side of the base part 3 in the thickness direction (left-right direction in FIG. 13A) is the front side (right side in FIG. 13A), and the base part 3 The other side of the thickness direction is the rear side (the left side in FIG. 13A), the one end side in the longitudinal direction of the base 3 (the vertical direction in FIG. 13A) is the upper side (the upper side in FIG. 13A), The other end side in the longitudinal direction of the base part 3 will be described as the lower side (the lower side in FIG. 13A).

  Slide grooves 42 for attaching the cover 7 are formed on both side surfaces (both side surfaces in the left-right direction in FIG. 12A) of the container body 4 in the short direction of the base 3. As shown in FIGS. 13A to 13D, the slide groove 42 includes a pair of horizontal groove portions 42a and 42b and a vertical groove portion 42c that allows the horizontal groove portions 42a to communicate with each other. The pair of lateral groove portions 42a and 42b are formed along the front-rear direction, and are spaced apart from each other at a predetermined interval in the vertical direction. The vertical groove portion 42c is formed along the vertical direction. Also in this embodiment, the container body 4 is formed so as to cover the upper half of the front surface 3 a of the base 3.

  The cover 7 in this embodiment is formed in a rectangular parallelepiped box shape. The cover 7 has an open rear surface and upper surface. The cover 7 is formed in a size that allows the container 4 to be accommodated therein. An insertion hole 72 is formed in the lower surface of the cover 7. The insertion hole 72 in the present embodiment is formed in a size that allows not only the cord 102 but also the plug 120 to pass therethrough. A rectangular parallelepiped slide projection 76 is formed on each of the left and right inner side surfaces of the cover 7. The cover 7 is attached to the body 4 by fitting each of the two slide protrusions 76 into each of the two slide grooves 42 of the body 4.

  Therefore, as shown in FIGS. 13A to 13D, the cover 7 has a position (lower position) where the slide protrusion 76 is located at the rear end of one of the lateral groove portions 42 a of the slide groove 42, and the slide protrusion 76. It slides along the slide groove 42 between the position (upper position) at the rear end of the other lateral groove 42c of the slide groove 42.

  Here, in the lower position, the cover 7 has a portion (lower surface portion) in which the insertion hole 72 is formed placed on the surface 4a of the body 4 of the body 2 with a predetermined distance (the plug 120 between the surface 4a of the body 4). It is arranged to face each other with a distance that can be stored. On the other hand, in the upper position, the cover 7 has a portion (lower surface portion) where the insertion hole 72 is formed separated from the one surface 4a of the body 4 by a distance shorter than the predetermined distance (in the illustrated example, the lower surface portion contacts the one surface 4a). Opposed to each other.

  Therefore, in the plug receiving device 1 of the present embodiment, the lower position is the closed position and the upper position is the open position. In moving the cover 7 from the closed position to the open position, the cover 7 is moved forward along the one horizontal groove portion 42a, then moved upward along the vertical groove portion 42c, and finally the other horizontal groove. What is necessary is just to move back along the part 42b. Conversely, when moving the cover 7 from the open position to the closed position, the cover 7 is moved forward along the other lateral groove 42b, then moved downward along the vertical groove 42c, and finally one of the covers 7 is moved to the closed position. What is necessary is just to move back along the horizontal groove part 42a.

  According to the plug receiving device 1 of the present embodiment described above, similarly to the first embodiment, the plug 120 can be prevented from being pulled out regardless of the presence or absence of the lock piece 121, and the plug 120 has the lock piece 121. The release prevention can be released when an excessive external force is applied.

  Further, when the cover 7 is positioned at the closed position and the storage space S is closed, the splash is applied to the blade receiving portions in the plug blade insertion holes 40 a to 40 c of the body 2 and the plug blades 120 a to 120 c of the plug 120. This can be prevented. On the other hand, if the cover 7 is positioned at the open position, the storage space S is opened and the cover 7 covers the container 4 of the body 2, so that the amount of protrusion of the cover 7 from the wall surface W is larger than that at the closed position. It will never become. Therefore, even when waterproofing is not necessary, the cover 7 does not get in the way and is easy to use.

  In particular, in the plug receiving device 1 of the present embodiment, the cover 7 is arranged such that the portion where the insertion hole 72 is formed is opposed to the one surface 4a of the body 4 with a predetermined distance in the closed position, and the insertion hole is in the open position. 72 is attached to the body 2 so as to slide between the closed position and the open position so that the portion where the 72 is formed is opposed to the one surface 4a of the body 4 at a distance shorter than the predetermined distance. Yes. Therefore, since the position of the front surface of the cover 7 does not change in either the closed position or the open position, the amount of protrusion of the cover 7 from the wall surface W is the same. Further, since the closed position and the open position can be switched simply by sliding the cover 7, the cover 7 can be easily operated.

  The first and second embodiments described above are merely one embodiment of the plug receiving device of the present invention, and are not intended to limit the technical scope of the present invention to the first and second embodiments, but depart from the spirit of the present invention. It can be changed within the range not to be. For example, in the first embodiment, the cover 7 is attached to the body 4 of the body 2 in a form in which the cover 7 can rotate and in the second embodiment in a form in which the cover 7 can slide. However, if the cover 7 is movably attached to the body 2 so that the protruding amount from the wall surface W at the open position is equal to or less than the protruding amount from the wall surface W at the closed position, the effect of the present invention can be achieved. it can. Moreover, the body 2 does not necessarily need to have the base part 3, and the shape of the container body 4, in particular, the shape of the plug blade insertion holes 40a to 40c is not limited to that of each embodiment, and is used for the ground electrode. The thing of the structure which does not have the plug blade insertion hole 40c may be sufficient.

(Embodiment 3)
For example, as shown in FIG. 14, the plug receiving device 1 of the present embodiment connects the plug 120 (hereinafter denoted by reference numeral 120 </ b> A) to the outlet P without the length of the cord 102 (hereinafter denoted by reference numeral 102 </ b> A). It is an extension cord used when it cannot be connected to. The plug receiving device 1 of the present embodiment includes a body 2 for connecting a plug 120A of an electric device such as a cord set 100, a plug 120 (hereinafter denoted by reference numeral 120B) connected to an outlet P, a body 2, and a plug 120B. Are connected to each other with a cord 102 (hereinafter denoted by reference numeral 102B).

  The body 2 in the present embodiment is composed of a cylindrical container 4 whose both end openings are closed. As shown in FIG. 15, plug blade insertion holes 40 a, 40 b, and 40 c similar to those of the first embodiment are formed on one surface 4 a of the container body 4, and an opening portion 40 d and a projecting piece 40 e are provided. .

  In the present embodiment, the electrical connecting portion 5 includes a blade receiving portion 6 housed in the body 4 of the body 2, a terminal portion made of a plug 120B separate from the body 2, a plug 120B serving as the terminal portion, and a blade receiving portion. It is comprised with the code | cord | chord 102B which connects the part 6. FIG. The plug 120B is the same as the plug 120A, but does not include the lock piece 121 serving as a fixed portion. The code 102B is the same as the code 102A.

  That is, in the plug receiving device 1 of the present embodiment, the terminal portion of the electrical connecting portion 5 is formed of the plug 120B separate from the body 2, and the plug 120B serving as the terminal portion and the blade receiving portion 6 are connected by the cord 102B. ing.

  Also in the plug receiving device 1 of the present embodiment, as in the first embodiment, when the plug 120 having the lock piece 121 is connected, when the plug 120 is positioned at the insertion / extraction position, Since the plug 120 is fixed to the body 2 by the locking piece 40e of the body 2, the plug 120 can be prevented from coming off, and the plug 120 can be prevented from coming off unexpectedly. Further, when a force of a predetermined value or more is applied in the direction in which the plug 120 and the body 2 are separated from each other, the fixing of the plug 120 (preventing the plug from being removed) is released. Therefore, when an excessive external force acts on the cord 102 of the plug 120 due to an excessive external force, the plug 120 is prevented from coming off, and therefore, the plug 120 is damaged, the cord 102 is disconnected, or the person falls. Can be prevented, and is highly safe. On the other hand, in the case of the plug 120 that does not have the lock piece 121, the plug 120 is unexpectedly prevented from being detached by the locking projections 61a and 61b that are the retaining portions when the plug 120 is rotated from the insertion / extraction position to the retaining position. It can be prevented from coming off. In this way, the plug 120 can be prevented from coming off regardless of the presence or absence of the lock piece 121, and when the plug 120 has the lock piece 121, it can be released when an excessive external force is applied. it can.

  FIG. 16 shows another example of the plug receiving device 1 of the present embodiment. Like the one shown in FIG. 8, the tip of the plug 120 is placed between the insertion / extraction position and the removal prevention position on one surface 4a of the container 4. A recess 40f of a size that can be rotated is formed. The plug blade insertion holes 40a to 40c are opened in the bottom surface of the recess 40f. In addition, on the inner peripheral surface of the recess 40f, there is provided a locking piece 40e for locking the claw portion 121b of the lock piece 121 at the insertion / extraction position together with an opening portion 40d into which the claw portion 121b of the lock piece 121 enters at the insertion / extraction position. As a result, the plug 120 can be prevented from coming off.

  In addition, this embodiment is only one embodiment of the plug receiving device of the present invention, and is not intended to limit the technical scope of the present invention to the third embodiment, but may be changed without departing from the spirit of the present invention. Can do.

  In the first and second embodiments, the outlet device is illustrated as the plug receiving device, and the extension cord is illustrated in the third embodiment. However, the plug receiving device is not limited thereto, and any device to which the plug 120 is connected may be used. The technical idea of the plug receiving device of the present invention can be applied. For example, it has a plug blade insertion hole for a plug on the power supply side and a plug blade insertion hole for a plug on the load (electric equipment) side. The present invention can also be applied to an electric leakage breaker (ELB) that cuts off an electric circuit.

The plug receptacle apparatus of Embodiment 1 is shown, (a) is a top view of the principal part, (b) is explanatory drawing of a connection state with a plug. The plug receptacle apparatus same as the above is shown, (a) is a side view when the cover is in the closed position, and (b) is a side view when the cover is in the open position. The plug receptacle apparatus same as the above is shown, (a) is a front view when the cover is in the closed position, and (b) is a front view when the cover is in the open position. The plug receiving apparatus same as the above is shown, (a) is a bottom view when the cover is in the closed position, and (b) is a bottom view when the cover is in the open position. The cord set for electric vehicle charging is shown, (a) is a front view, (b) is a side view. It is explanatory drawing of the cord set for electric vehicle charging. It is an external view of the other example of the electric vehicle charging cord set. It is explanatory drawing of the plug receiving apparatus of the other example of Embodiment 1. FIG. It is a side view of another example of the plug receiving device. It is a bottom view of the other example of the plug receiving device. The plug receiving apparatus of the other example same as the above is shown, (a) is a front view, (b) is a side view. The plug receptacle apparatus of Embodiment 2 is shown, (a) is a front view when a cover exists in a closed position, (b) is a front view when a cover exists in an open position. It is explanatory drawing of a plug receiving apparatus same as the above. It is explanatory drawing of the plug receiving apparatus of Embodiment 3. It is an external view of the principal part of a plug receiving apparatus same as the above. It is an external view of the plug receiving apparatus of the other example same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plug receiving apparatus 2 Body 4a One surface 5 Electrical connection part 6 Blade receiving part 7 Cover 8 Locking device 40a-40c Plug blade insertion hole 40e Locking piece (fixing part)
61a, 61b Locking projection (preventing part)
72 Insertion hole 102 (102A, 102B) Cord 120 (120A, 120B) Plug 121 Lock piece (fixed part)
121a Elastic piece 121b Claw portion S Storage space

Claims (8)

A body having a plug blade insertion hole on one side into which the plug blade of the plug is inserted, an electrical connection portion having a blade receiving portion that contacts the plug blade inserted into the plug blade insertion hole and a terminal portion connected to a power source And a retaining portion for mechanically coupling with the blade inserted into the blade insertion hole to prevent the plug from being removed,
The plug blade insertion hole is formed so that the plug can be rotated between an insertion / removal position where the plug blade of the plug can be inserted / removed in a plane parallel to the one surface and a removal position where the plug is prevented from being removed by the retaining portion. Formed,
The body is provided with a fixed portion that constitutes a fixing means for fixing the plug at the insertion / extraction position, together with a fixed portion provided on the plug.
The fixing means releases the fixing of the plug when a force of a predetermined value or more is applied in a direction in which the plug and the body are separated from each other. The body is attached to the wall of the building with the one side facing down,
In the body, a cover having an insertion hole for passing a cord connected to the plug opens a closed position for closing the plug storage space formed on the one surface side of the body, and the storage space. 2. The plug receiving device according to claim 1, wherein the plug receiving device is mounted so as to be movable between an open position and a covering position. The cover is rotatably attached to the body,
The rotation axis of the cover is parallel to the wall surface,
3. The plug receiving device according to claim 2, wherein the outer peripheral shape of the cover in a plane orthogonal to the rotation axis is a fan shape centering on the rotation center of the cover. The insertion hole is formed in a size that allows the plug to pass through,
The cover has a portion where the insertion hole is formed at the closed position facing the one surface of the body at a predetermined distance, and a portion where the insertion hole is formed at the open position is the one surface of the body. 3. The apparatus according to claim 2, wherein the body is slidably moved between the closed position and the open position so as to be opposed to each other with a distance shorter than the predetermined distance. Plug receiving device. The insertion hole is formed in a size that the plug cannot pass through,
4. The plug receiving device according to claim 2, further comprising a lock device for fixing the cover in the closed position. The terminal portion is a plug separate from the body,
The plug receiving device according to claim 1, wherein the terminal portion and the blade receiving portion are connected by a cord. The fixed portion includes an elastic piece having elasticity in a direction intersecting the insertion / extraction direction of the plug, and a claw portion protruding in a direction intersecting the insertion / extraction direction from a tip portion of the elastic piece,
The plug receiving device according to any one of claims 1 to 6, wherein the fixing portion includes a locking piece for locking the claw portion of the fixed portion. One of the fixed part and the fixed part is a magnet,
The plug receiving device according to any one of claims 1 to 6, wherein the other of the fixed portion and the fixed portion is made of a material attracted to the magnet.

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