JP6402604B2 - Grounded power plug receiving device - Google Patents

Description

  The present invention relates to a grounded power plug receiving device such as a table tap or an outlet for fitting a power plug having a grounding cord.

As this type of grounded power plug receiving device, for example, a grounding table tap described in Patent Document 1 is known.
In this grounding table tap, a plurality of, for example, four sets of outlets constituted by two voltage side pole blade receiving spring blocks and one ground side pole blade receiving spring block are arranged in series on the outer shell, and one end of the outer shell is arranged. An earth terminal is formed in the part.

JP-A-5-205820

In the grounding table tap described in Patent Document 1, when a power plug having a voltage side pole blade and a ground side pole blade at the end face is mounted, the voltage side pole blade and the ground side pole blade of the power plug are desired. Electrical connection can be achieved by fitting into the voltage side pole blade receiving spring block and the ground side pole blade receiving spring block of the outlet.
However, when only the voltage side pole blade is provided on the end face and a power plug having a grounding cord is attached to the grounding table tap instead of the ground side pole blade, the voltage side pole blade is a voltage side pole blade receiving spring block. The connection portion at the tip of the grounding cord is connected to an earth terminal formed on the end surface of the grounding table tap. At this time, the grounding cord should be long, but since it is usually about 10 cm, the tip of the grounding cord does not reach the grounding terminal when power plugs with grounding cords are attached to multiple table taps. There is a problem that the cord may not be connected.

  Accordingly, the present invention has been made paying attention to the problems of the conventional example described above, and an object of the present invention is to provide a grounded power plug receiving device capable of easily and reliably grounding a power plug having a grounding cord. It is said.

In order to achieve the above object, a grounded power plug receiving device according to an aspect of the present invention receives an insulating case body and a voltage side pole blade of a power plug having a grounding cord disposed in the insulating case body. A plurality of outlet parts having voltage-side pole blade receiving springs, and a grounding insertion part for inserting and holding a grounding cord of a power plug having a grounding cord individually provided adjacent to each outlet part. The power plug includes an insertion hole having a lock release position that allows insertion and extraction of the voltage side pole blade of the power plug and a lock position that suppresses extraction of the voltage side pole blade of the power plug. When it is inserted to the unlocked position of the insertion hole of each outlet and then rotated to the locked position, it is clamped by the voltage side pole blade receiving spring and locked from the locked position. Holding When rotated to the release position, it allows withdrawal from the clamping state is canceled each outlet portion by the voltage side electrode blade receiving springs, for insertion part grounded, the distal end of the ground cord while permitting insertion of ground cord A pair of plate portions arranged opposite to each other so that the upper end is opened, and a pair of the voltage side pole blades of the power plug when the voltage side pole blades are rotated from the unlocked position to the locked position. A holding mechanism that achieves the holding of the grounding cord by the plate portion, the holding mechanism is rotatably supported by the insulating case body, and the voltage side electrode blade of the power plug rotates from the unlocked position to the locked position. A rotating arm that engages with the voltage side electrode blade of the power plug and rotates with the rotation of the voltage side electrode blade, and is formed on the rotating arm, and one of the pair of plate portions is placed inside Inserted between a pair of plates Distal end of the ground code that that have a pressing engagement portion for holding the.

  According to one aspect of the present invention, it is possible to provide a grounded power plug receiving device that can easily and reliably hold the tip of the ground cord when the power plug having the ground cord is attached.

It is a top view which shows the table tap which is 1 aspect of this invention. FIG. 2 is an enlarged plan view of an outlet portion with the upper case of FIG. 1 removed. It is sectional drawing on the III-III line of FIG. It is a top view which shows a power cord with a grounding cord. It is a front view which shows the embedded outlet socket which is 1 aspect of this invention.

  Next, an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

Further, the embodiment described below exemplifies an apparatus and a method for embodying the technical idea of the present invention, and the technical idea of the present invention is the material, shape, structure, The layout is not specified as follows. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.
One embodiment of the present invention will be described with reference to a table tap which is one of grounded power plug receiving devices.

  As shown in FIG. 1, the table tap 10 includes an insulating case body 11, a connection cord 12 led out from the insulating case body 11, and a grounded power plug 13 connected to the tip of the connection cord 12. Yes. The grounded power plug 13 is a pair of parallel plate-like voltage side electrode blades 13b and 13c protruding from the end face of the plug body 13a, and a position spaced apart from the intermediate position between the voltage side electrode blades 13b and 13c by one predetermined distance. To the voltage-side electrode blades 13b and 13c and a ground-side electrode blade 13d protruding in parallel.

  As the power plug to be attached to the table tap 10, in addition to the same shape as the grounded power plug 13 described above, a ground used for the device 15 requiring grounding such as a personal computer or a liquid crystal display shown in FIG. There is a power plug 14 with cord. In the power plug 14, the grounding side blade of the grounded power plug 13 is omitted, and a grounding cord 14d is projected instead.

  The grounding cord 14d includes an insulating cord portion 14e that protrudes from the side surface or the back surface of the plug main body 14a and is covered with insulation, and a conductive terminal portion 14f that is attached to the tip of the insulating cord 14e. Here, the terminal part 14f can be comprised by the crimp terminal formed in various shapes, such as round shape and U shape. Further, although not shown, the grounding cord 14d may be a terminal portion 14f that can be electrically conductive by cutting off the coating at the tip of the insulating cord 14e instead of the crimping terminal to expose the internal conductor.

On the other hand, as shown in FIG. 3, the insulating case body 11 is integrally connected by a fixing member such as a screw (not shown) by fitting the upper case body 11a and the lower case body 11b. A plurality of, for example, four outlet portions 21A, 21B, 21C, and 21D to which the power plug 13 or 14 is attached are formed in the upper case body 11a.
Each of the outlet portions 21A to 21D has three pole blade insertion holes 22a, 22b for inserting the voltage side pole blades 13b, 13c and the ground side pole blade 13d of the grounded power plug 13 formed in the upper case body 11a, and 22c and a grounding insertion hole 22d for inserting the tip of the grounding cord 14d of the power cord 14 with grounding cord. Here, the grounding insertion hole 22d is formed on the opposite side of the pole blade insertion hole 22a from the pole blade insertion hole 22b and extending in a direction perpendicular to the longitudinal direction of the insulating case body 11.

And each outlet part 21A-21D surrounds the pole blade insertion holes 22a-22c and the grounding insertion hole 22d, and the identification display part 23 showing the connection range of a power plug is formed.
Further, as shown in FIG. 2, each of the outlet portions 21A to 21D has a voltage side for receiving the voltage side pole blades 13b, 13c and 14b, 14c of the power plugs 13 and 14 arranged at the bottom of the lower case body 11b. It has pole blade receiving springs 24a and 24b and a ground side pole blade receiving spring 24c that receives the ground side pole blade 13d.

Also, each of the outlet portions 21A to 21D is for grounding in which the tip of the grounding cord 14d of the power cord 14 with grounding cord is inserted and held on the opposite side of the voltage-side polar blade receiving spring 24b of the voltage-side polar blade receiving spring 24a. An insertion portion 25 is formed.
As shown in FIG. 3, each of the voltage side pole blade receiving springs 24a and 24b and the ground side pole blade receiving spring 24c has a U-shape when viewed from the side fixed to the bottom of the lower case body 11b by screwing or the like. A base 26a, inner inclined extensions 26b and 26c that incline extend from the upper end of the opposing plate portion of the base 26a to contact each other, and an outer inclination that inclines outward from the contact portion of these inclined extensions 26b and 26c. Extension portions 26d and 26e are provided.

  The voltage-side pole blade receiving springs 24a and 24b and the ground-side pole blade receiving spring 24c are formed in a circular arc shape so as to allow the rotation of the pole blades 13b, 13c and 13d when viewed from the plane. . Further, the voltage side pole blade receiving springs 24a and 24b and the ground side pole blade receiving spring 24c are arranged on the end side in the clockwise direction with respect to the insertion holes 22a, 22b and 22c formed in the upper case body 11a. Yes.

  Therefore, the voltage side pole blade receiving springs 24a and 24b and the ground side pole blade receiving spring 24c do not exist on the end portions in the counterclockwise direction of the insertion holes 22a, 22b and 22c. For this reason, the counterclockwise direction side of the insertion holes 22a, 22b and 22c is a lock release position where the voltage side pole blades 13b and 13c and the ground side pole blade 13d of the power plug 13 can be easily inserted and extracted. The voltage-side electrode blades 13b, 13c and the ground-side electrode blade 13d are rotated clockwise in a state where the voltage-side electrode blades 13b, 13c and the ground-side electrode blade 13d are inserted into the insertion holes 22a, 22b, and 22c. Is held between the voltage-side pole blade receiving springs 24a and 24b and the ground-side pole blade receiving spring 24c, and becomes a locked position where the withdrawal is suppressed.

As shown in FIG. 3, the grounding insertion portion 25 is a plate that is a pressure contact portion that is U-shaped when viewed from the side in a state where no load is applied to the spring receiving portion 11c formed on the lower case body 11b. It has a spring member 25a. The open end of the leaf spring member 25a faces the grounding insertion hole 22d formed in the upper case body 11a. As shown in FIGS. 2 and 3, the leaf spring member 25a locks the power plug 13 or 14 by a rotating arm 27 whose plate portion on the side facing the voltage side pole blade receiving spring 24a constitutes a holding mechanism. The tip of the grounding cord 14d is clamped by being inclined inward in conjunction with the rotation to the position.

  The rotating arm 27 is rotatably supported by a support shaft 28 formed at the center point of the arc of the voltage side pole blade receiving springs 24a and 24b of the lower case body 11b. The rotating arm 27 has a substantially L-shaped arm portion 27a that is rotatably supported by the support shaft 28 and reaches the grounding insertion portion 25 through the rear side of the voltage-side pole blade receiving spring 24a. The arm portion 27a includes a first engagement piece 27b that is engaged with the voltage-side pole blade 13b or 14b and moved rearward when the power plug 13 or 14 is rotated to the locked position, and a grounding insertion portion. A second engagement piece 27c serving as an arcuate pressing engagement portion centered on the center of the support shaft 28 that contacts the plate portion 25c on the voltage side pole blade receiving spring 24a side of the 25 leaf spring members 25a. Yes.

The second engagement piece 27c is connected to the first arcuate plate portion 27d connected to the tip of the arm portion 27a and the counterclockwise end of the first arcuate plate portion 27d via the tapered plate portion 27e. The second arcuate plate portion 27f is provided.
The first arcuate plate portion 27d has an arcuate outer peripheral surface 27g with the center of the support shaft 28 as a center point and a shortest distance from the center point to the plate portion 25c of the leaf spring member 25a as a radius.

The second arcuate plate portion 27f has an outer peripheral surface 27h having a radius longer than the shortest distance from the center point of the support shaft 28 to the plate portion 25c of the leaf spring member 25a. The tapered plate portion 27e has a tapered surface 27i that connects the outer peripheral surfaces of the first arc-shaped plate portion 27d and the second arc-shaped plate portion 27f.
The rotating arm 27 is provided with a return spring 30 that returns the arm portion 27a to the rotation start position between the arm portion 27a and the positioning pin 29 protruding from the bottom of the lower case body 11b.

When the arm 27 a is in contact with the support pin 29 by the return spring 30, the rotating arm 27 is configured such that the outer peripheral surface of the first arcuate plate portion 27 d is the plate portion of the plate spring member 25 a of the grounding insertion portion 25. It is in contact with the outer peripheral surface of 25c.
When the power plug 13 or 14 is rotated clockwise from this state to the locked position, the voltage side electrode blade 13b is engaged with the first engagement piece 27b in the middle of the operation, and the first engagement piece 27b is moved to the clockwise direction. Move in the direction. As a result, the rotating arm 27 rotates clockwise, and the tapered plate portion 27e and the second arcuate plate portion 27f sequentially contact the outer peripheral surface of the plate portion 25c of the leaf spring member 25a of the grounding insertion portion 25. Accordingly, the plate portion 25c of the leaf spring member 25a is inclined inward, and the terminal portion 14f of the ground cord 14d of the power cord 14 with the ground cord is inserted between the plate portions 25b and 25c of the leaf spring member 25a. In this case, the terminal portion 14f is sandwiched.

  Thereafter, when the power plug 13 or 14 is rotated from the locked position to the unlocked position, the rotating arm 27 is returned to the initial position where it comes into contact with the support pin 29 by the return spring 30. Accordingly, the second arcuate plate portion 27f, the tapered plate portion 27e, and the first arcuate plate portion 27d are brought into contact with the outer peripheral surface of the plate portion 25c of the leaf spring member 25a in this order, and the plate portion 25c is perpendicular to the inclined state. Returning to the state, the holding of the terminal portion 14f of the grounding cord 14d provided in the grounded power plug 13 is released.

  It should be noted that the ground-side pole blade receiving springs 24c of the outlet portions 21A to 21D and the leaf spring members 25a of the grounding insertion portion 25 are electrically connected to each other and are grounded via an insulated grounding cord in the connection cord 12. The power plug 13 is electrically connected to the ground-side electrode blade 13d. The ground terminal 31 formed on the end surface of the case body 11 opposite to the connection cord 12 is also electrically connected to the ground-side pole blade receiving spring 24c and the leaf spring member 25a of the outlet portion 21A.

  Similarly, the voltage side electrode blade receiving springs 24a of the outlet portions 21A to 21D are electrically connected to each other and electrically connected to the voltage side electrode blade 13b of the grounded power plug 13 through the inner conductor of the connection cord 12. It is connected. Further, the voltage-side electrode blade receiving springs 24b are connected to each other and electrically connected to the voltage-side electrode blade 13c of the grounded power plug 13 via the inner conductor of the connection cord 12.

Next, the operation of the above embodiment will be described. When the grounded power plug 13 is attached to the table tap 10, first, the voltage side pole blades 13b and 13c are inserted into the unlock position of the pole blade insertion holes 22a and 22b, and at the same time the ground side pole blade 13d is inserted into the pole blade. It inserts in the lock release position side of the insertion hole 22c.
In this state, the grounded power plug 13 is rotated clockwise as viewed from above, whereby the voltage side pole blades 13b and 13c are held between the voltage side pole blade receiving springs 24a and 24b, and the ground side pole blade 13d is grounded. It becomes a locked position clamped with the side pole blade receiving spring 24c.

  When the grounded power plug 13 is attached to the table tap 10, since the ground side polar blade 13d is formed integrally with the voltage side polar blades 13b and 13c, the grounded power plug 13 of the table tap 10 is connected to the wall. By connecting the grounded power plug 13 attached to the table tap 10 to the locked position, the grounding-side electrode blade 13d can be connected to the power outlet via the connection cord 12 and the grounded power plug 13 by connecting to a grounded power outlet. Can be grounded.

  On the other hand, when the grounding-side pole blade 13d is omitted and a power cord 14 with a grounding cord having a grounding cord 14d is attached to any of the outlet portions 21A to 21D of the table tap 10 instead, a power source with a grounding cord is provided. The voltage side pole blades 14b and 14c of the plug 14 are inserted into the pole blade insertion holes 22a and 22b of the desired outlet portions 21A to 21D of the table tap 10 at the unlock position. Before or after that, the terminal portion 14f of the grounding cord 14d is inserted into the grounding insertion hole 22d.

In this initial state, the outer peripheral surface of the first arcuate plate portion 27d of the second engagement piece 27c of the rotating arm 27 is in contact with the plate portion 25c of the leaf spring member 25a of the grounding insertion portion 25. The part 25c maintains a vertical state. For this reason, the terminal part 14f of the grounding cord 14d can be easily inserted into the grounding insertion part 25.
In this state, when the power plug 14 with the ground cord is rotated clockwise to the locked position, the rear end of the power plug 14 with the rotating arm 27 is engaged with the first engagement of the rotating arm 27 as the voltage-side pole blade 14b rotates clockwise. In contact with the piece 27b, the rotating arm 27 rotates clockwise as shown by the one-dot chain line in FIG. As a result, the tapered plate portion 27e and the second arcuate plate portion 27f of the second engagement piece 27c come into contact with the plate portion 25c of the leaf spring member 25a of the grounding insertion portion 25 in this order from the outside. For this reason, the plate portion 25c of the plate spring member 25a is inclined inward, and the terminal portion 14f inserted between the plate portions 25b and 25c of the plate spring member 25a is held in a locked state. As a result, conduction between the grounding cord 14d and the grounding electrode on the outlet side is ensured.

  Thus, when the power cord 14 with the grounding cord is attached to the table tap 10, the grounding blade insertion holes 22a and 22b for inserting the voltage side polar blades 14b and 14c and the grounding insertion portion for inserting the tip of the grounding cord 14d. 25 is surrounded by the identification display unit 23, so that it is possible to suppress erroneous insertion of the ground cord 14d into the outlet portion adjacent to the controller portion into which the voltage side pole blades 14b and 14c are inserted.

Thus, according to 1st Embodiment of this application, when several outlet part 21A-21D is formed in the table tap 10, it is predetermined spacing with respect to the voltage side pole blade insertion hole 22a of each outlet part 21A-21D. The grounding insertion portion 25 is formed at a remote position.
For this reason, when the power plug 14 with the grounding cord is attached to the desired outlet portion 21i (i = 21A to 21D) of the table tap 10, the voltage side pole blades 14b and 14c of the power cord 14 with the grounding cord are connected to the table tap 10. Are inserted into the unlocked positions of the pole blade insertion holes 22a and 22b, and the terminal portion 14f of the grounding cord 14d or the exposed internal conductor is inserted into the grounding insertion portion 25 before and after that.

At this time, since the power plug 14 with the ground cord is in the unlocked position, the first engagement piece 27b of the rotating arm 27 and the voltage side pole 14b of the power plug 14 with the ground cord are not as shown in FIG. Opposing in contact. Therefore, the rotating arm 27 is in contact with the positioning pin 29 by the return spring 30 as shown by the solid line in FIG.
In this state, the rotary arm 27 has a first arcuate plate portion 27d of the second engagement piece 27c thereof and a plate portion 25c on the voltage side pole blade receiving spring 24a side of the leaf spring member 25a of the grounding insertion portion 25. Maintains a vertical state. Therefore, the tip of the grounding cord 14d can be easily inserted from the open end of the leaf spring member 25a of the grounding insertion portion 25.

  Then, when the power cord 14 with grounding cord is rotated clockwise to the locked position, the voltage-side pole blades 14b and 14c of the power cord 14 with grounding cord are connected to the inner inclined plate portions 26b of the voltage-side pole blade receiving springs 24a and 24b. And the voltage side pole blades 14b and 14c enter into the contact part of 26c. When the power plug 14 with the ground cord reaches the lock position, the voltage-side pole blades 14b and 14c are sandwiched between the voltage-side pole blade receiving springs 24a and 24b, thereby preventing the power cord 14 with the ground cord from coming out.

  As described above, when the power cord 14 with grounding cord is rotated to the lock position side, the first engagement of the rotating arm 27 is performed by the voltage side electrode blade 14b with the clockwise rotation of the power plug 14 with grounding cord. The joining piece 27b is pushed clockwise, and the turning arm 27 turns clockwise with the support shaft 28 as a fulcrum. By the rotation of the rotating arm 27, the second arcuate plate portion 27f extends from the first arcuate plate portion 27d of the second engagement piece 27c beyond the tapered plate portion 27e, and the leaf spring of the grounding insertion portion 25 is moved. It will contact the plate portion 25c of the member 25a. For this reason, the plate portion 25c of the leaf spring member 25a is inclined inward to sandwich the terminal portion 14f of the ground cord 14d. Therefore, the terminal portion 14f of the grounding cord 14d is prevented from coming out from the grounding insertion portion 25.

Further, in order to pull out the power plug 14 with the ground cord attached to the table tap 10, the power plug 14 with the ground cord is rotated from the lock position to the lock release position in the counterclockwise direction. Thereby, the clamping of the voltage side pole blades 14b and 14c by the voltage side pole blade receiving springs 24a and 24b is released.
By turning the power cord 14 with ground cord counterclockwise, the voltage-side pole blade 14b returns to the state shown by the solid line in FIG. The one engaging piece 27b returns in the counterclockwise direction while being in contact with the voltage side pole blade 14b, and the rotating arm 27 is also rotated in the counterclockwise direction.

  By the rotation of the rotating arm 27 in the counterclockwise direction, the second arcuate plate portion 27f of the second engagement piece 27c is engaged with the outer peripheral surface of the plate portion 25c of the leaf spring member 25a of the grounding insertion portion 25. The first arcuate plate portion 27d returns to the state of engaging with the outer peripheral surface of the plate portion 25c of the plate spring member 25a through the tapered portion 17e. For this reason, the plate portion 25c of the leaf spring member 25a returns to the vertical state, and the pinching of the tip of the ground cord 14d is released. Thereby, the terminal part 14f of the grounding cord 14d can be easily removed from the grounding insertion part 25.

Therefore, when the power plug 14 with the ground cord reaches the unlocking position, the clamping state of the voltage side electrode blades 14b and 14c and the clamping state of the terminal portion 14f of the ground cord 14d are released. It can be easily pulled out from the outlet portion 21 i of the table tap 10.
As described above, according to the above embodiment, even the power cord 14 with the grounding cord can be easily inserted into and removed from the table tap 10, and the tip end of the grounding cord 14 d can be attached to the grounding insertion portion 25. Just by inserting, the leaf spring member 25a securely holds the power cord 14 with grounding cord as the power cord 14 is rotated to the locked position. Further, by rotating the power plug 14 with the ground cord from the locked position to the unlocked position, the clamping of the voltage side electrode blades 14b and 14c is released, and the clamping of the tip of the ground cord 14d is also automatically released. The

  In addition, the rotating arm 27 is applied as a holding mechanism, and the second engagement piece 27c is provided on the distal end side of the first engagement piece 27b, so that the power cord 14 with the grounding cord can be rotated from the unlocked position to the locked position. Even if the amount of movement is small, the amount of rotation of the second engagement piece 27c can be increased. For this reason, it becomes easy to form the first arcuate plate portion 27d, the tapered plate portion 27e, and the second arcuate plate portion 27f.

  Further, by arranging the rotation center of the rotation arm 27 on a line orthogonal to the side surface of the plate portion 25c of the leaf spring member 25, the second arcuate plate portion 27f is plated at the lock position of the power plug 14 with the ground cord. When contacting the plate portion 25c of the spring member 25, the side surface of the plate portion 25c of the plate spring member 25 and the tangent line of the second arcuate plate portion 27f coincide with each other. The second arcuate plate portion 27f can be reliably prevented from rotating due to the elastic force. Therefore, the tip of the grounding cord 14d can be reliably held.

  In the first embodiment, the case where the table tap 10 is applied as the grounded power plug receiving device has been described. However, the present invention is not limited to this and is embedded in a wall or the like as shown in FIG. For example, with respect to the two embedded outlets 40 arranged in the above, the ground insertion portions 42 may be individually formed in the outlet portions 41A and 41B. In this embodiment, since the grounding insertion portion 25 is formed below the pole blade insertion hole 22c for inserting the grounding side pole blade 13d, the second engagement piece 27c of the rotating arm 27 in the above-described embodiment. Is extended to the grounding insertion portion 42, and a tapered plate portion 27e and a second arcuate plate portion 27f that engage with the leaf spring member 25a of the grounding insertion portion 25 are formed on the end side thereof. Good.

  Moreover, in the said embodiment, although the case where the grounding insertion part 25 was formed in the outer side facing the voltage side pole blade receiving spring 24a of outlet part 21A-21D was demonstrated, it is not limited to this, voltage The grounding insertion portion 25 can be formed on the side pole blade receiving spring 24b side, and further, as shown in FIG. 5, it can be arranged to face the grounding side blade insertion hole 22c. In addition, if a movable member that moves in accordance with the movement of the power plug 14 with the ground cord to the lock position is provided, and the ground cord 14d can be held by the ground insertion portion 25 by this movable member, the pole blade insertion holes 22a to 22c. The grounding insertion portion 25 can be formed at an arbitrary position around the.

  In the above embodiment, the case where the second engagement piece 27c is integrally formed at the tip of the arm portion 27a of the rotating arm 27 has been described. However, the present invention is not limited to this, and the tip of the arm portion 27a is not limited thereto. A long hole is formed, and a sliding arm that slides parallel to the leaf spring member 25a of the grounding insertion portion 25 is engaged with the long hole, and the first engagement plate portion and the first engagement are engaged with the sliding arm. Even if a second engagement plate portion projecting toward the leaf spring member 26 with respect to the plywood portion and a tapered plate portion connecting the first engagement plate portion and the second engagement plate portion are formed, the same as in the above embodiment. An effect can be produced. Further, a sliding member that slides as the power plug 14 is rotated to the lock position is provided instead of the rotating arm, and the sliding member is engaged with the leaf spring member 25a of the grounding insertion portion 25 inclined. A part may be formed. In short, a holding mechanism capable of holding the tip of the grounding cord 14d in conjunction with the rotation of the power cord 14 with grounding cord to the locked position may be configured.

Furthermore, in the said embodiment, although the case where the U-shaped leaf | plate spring member 25a was arrange | positioned to the insertion part 25 for earthing | grounding was demonstrated, it is not limited to this, The leaf | plate spring member 25a is only board | plate part 25c. It may be shaped and a fixed wall may be provided at a position facing the plate portion 25c.
Moreover, in the said embodiment, although the table tap and outlet socket which mount | wear with the grounded power plug 13 which has a ground side pole blade were demonstrated, it is not limited to this, The pole blade insertion hole 22c and the ground side pole blade You may make it abbreviate | omit the receiving spring 24c and to provide the outlet part which can mount | wear with only the power plug 14 with a grounding cord.

  DESCRIPTION OF SYMBOLS 10 ... Table tap, 11 ... Insulation case body, 12 ... Connection cord, 13 ... Grounded power plug, 13a ... Plug body, 13b, 13c ... Voltage side pole blade, 13d ... Ground side pole blade, 14 ... Power source with ground cord Plug, 14a ... Plug body, 14b, 14c ... Voltage side pole blade, 14d ... Grounding cord, 21A-21D ... Outlet part, 22a-22c ... Pole blade insertion hole, 24a, 24b ... Voltage side pole blade receiving spring, 24c ... Ground side pole blade receiving spring, 25 ... grounding insertion portion, 25a ... leaf spring member, 27 ... rotating arm, 27a ... arm portion, 27b ... first engagement piece, 27c ... second engagement piece, 27d ... first 1 arcuate plate portion, 27e ... tapered plate portion, 27f ... second arcuate plate portion, 28 ... support shaft, 29 ... positioning pin, 30 ... return spring, 40 ... embedded outlet, 41A, 41B ... consen Part, 42 ... ground insertion section

Claims (7)

An insulating case body;
A plurality of outlet portions having voltage side pole blade receiving springs that receive the voltage side pole blades of a power plug having a grounding cord disposed in the insulating case body;
A grounding insertion part for inserting and holding the grounding cord of the power plug having a grounding cord provided separately adjacent to each outlet part,
The outlet portion is provided with a insertion hole having a suppressing locked position the pull-out voltage side Gokuha unlocked position and the power plug to permit insertion and withdrawal of the voltage side Gokuha of the power plug, the power plug When the voltage side electrode blade is inserted into the lock release position of the insertion hole of each outlet portion and then rotated to the lock position, the voltage side electrode blade is sandwiched between the voltage side electrode blade receiving springs and When rotated to the unlock position, the clamping state by the voltage side pole blade spring is released and can be pulled out from each outlet part ,
The grounding insertion portion includes a pair of plate portions arranged to face each other so that an upper end holding the tip of the grounding cord is open while allowing the grounding cord to be inserted, and a voltage side pole blade of the power plug. A holding mechanism that achieves the holding of the grounding cord by the pair of plate portions in conjunction with the rotation of the voltage side polar blade when rotating from the unlocking position to the locking position ;
The holding mechanism is rotatably supported by the insulating case body, and when the voltage side pole blade of the power plug rotates from the unlock position to the lock position, A pivot arm that engages and pivots as the voltage-side pole blade pivots, and is formed on the pivot arm, and one of the pair of plates is moved inward to move the pair of plates. parts ground with power plug receiving apparatus characterized that you have a pressing engagement portion for holding the front end of the ground code inserted between. The grounded power plug receiving apparatus according to claim 1, wherein the pressing engagement portion is provided at a tip of the rotating arm. The grounded power plug receiving device according to claim 1 or 2, wherein the pair of plate portions are U-shaped plate spring members integrally formed by bending a single plate-like member. The ground cord, ground with power plug receiving apparatus according to claim 1, the terminal portion attached to the tip of its is characterized in that it is held by said pair of plate portions. The ground cord, ground with power plug receiving apparatus according to claim 1, characterized in that the terminal section insulating coating to expose the inner conductor is removed at the tip of its is held by the pair of plate portions . Wherein the insulation case body, ground with power plug according to any one of claims 1 5, characterized in that the identification display section surrounding said grounding insertion portion corresponding to the outlet portion is formed Receiving device. The grounded power plug receiving device according to any one of claims 1 to 6 , wherein the insulating case body is configured in any one of a table tap shape and an outlet shape.

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