JP2009199944A - Magnet type electric outlet adapter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnet type electric outlet adapter capable of preventing increase of contact resistance caused by contact between a terminal section and a terminal pin. <P>SOLUTION: The magnet type electric outlet adapter comprises a first adapter half-body A composed of a body 1 with inserting holes 15a, 16a wherein the terminal 13 projecting a pair of plug blades 12 capable of being inserted into and pulling out of an electric outlet and electrically connected with the plug blade 12 and a pair of terminal pins 22 are inserted, and a second adapter half-body B composed of a body 2 for storing the pair of terminal pins 22 capable of electrically connecting with the terminal section 13 via the inserting holes 15a, 16a and a blade-receiving section. The terminal 13 comprises a terminal plate 13a having the plug blade 12, a movable plate 13b wherein the terminal pin 22 is touched and a fulcrum section X arranged on the terminal plate 13a is freely rotatable as a fulcrum, and a reverse spring 13c for urging the movable plate 13b in a direction bringing into contact with the terminal plate 13a formed along the direction crossed with the inserting direction of the terminal pin 22. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a magnetic outlet adapter that is interposed between an outlet and a plug that can be connected to the outlet, and enables the outlet and the plug to be magnetically connected.

  Conventionally, a magnet is used to prevent disconnection of the cord when an external force is applied to the cord of the plug or to prevent the electric device to which the cord is connected from falling over a general outlet. Magnetic outlets are used that allow the plug to be removed from the outlet with a weak pulling force, but such magnetic outlets have a special shape, unlike ordinary outlets. Construction was necessary. Therefore, in order to obtain the same function as a magnetic outlet without performing electrical work, a magnetic outlet adapter is provided that is interposed between the outlet and the plug so that they can be magnetically attached. It is disclosed in Document 1.

  Hereinafter, a conventional example of such a magnetic outlet adapter will be described. This conventional example is composed of a first adapter half connected to an outlet provided on a wall surface, and a second adapter half connected to a plug connected to an external load. The first adapter half includes a pair of plug blades that can be connected to an outlet port of an outlet provided on a wall surface on one side, an insertion hole that is provided on the other side and into which a pair of terminal pins are inserted, and The second adapter half has a pair of terminal pins on one surface side and the other surface side on the other surface side. The second adapter half has a terminal portion that electrically connects the terminal pin inserted through the insertion hole and the plug blade. A plug body having a blade receiving portion to which a plug blade of a plug can be connected and electrically connected to a terminal pin, and the first adapter half and the second adapter half are connected to the first adapter half. Installed on the provided magnet and second adapter half Bound to the magnetic attraction force acting between the obtained magnetically attached pieces.

  Further, the first adapter half body is formed so that one surface provided with the plug blade and the other surface provided with the insertion hole are orthogonal to each other, and the first adapter half is provided on the wall surface. When connected to a provided outlet, the other side faces the ground. Thus, the magnet type outlet adapter becomes compact as a whole, and the amount of protrusion from the wall surface can be suppressed.

  Here, as shown in FIG. 6, the terminal portion of the first adapter half has two contact springs 101 (one in the drawing) in which the terminal pin 200 is elastically contacted and can be bent in the insertion direction of the terminal pin 200. Consists of. The contact spring 101 is, for example, a leaf spring formed by bending one end side of a metal plate a plurality of times (in the drawing, twice) into a substantially U shape, and a contact point with which the terminal pin 200 contacts at one end thereof. 101a is provided. One end of the plug blade 100 is caulked and fixed to the other end of the contact spring 101, and the contact spring 101 and the plug blade 100 are mechanically and electrically connected.

The end of the terminal pin 200 opposite to the side in contact with the contact spring 101 is caulked and fixed to one end of a substantially L-shaped conductive plate 202 made of a metal plate, and the terminal pin 200 and the conductive plate 202 are connected. They are mechanically and electrically connected. Further, a blade receiving portion 201 including a pair of spring pieces 201a facing each other and a connecting piece 201b connecting the spring pieces 202a is caulked and fixed to the other end portion of the conductive plate 202. The part 201 is mechanically and electrically connected. Thus, when the terminal pin 200 comes into contact with the contact point 101a of the contact spring 101, the plug blade 100 and the blade receiving portion 201 are electrically connected.
Japanese Patent Laying-Open No. 2005-243312

  However, in the above-described conventional example, since the plug blade 100 is caulked and fixed to the contact spring 101, when the contact 101a is pressed against the terminal pin 200, stress is applied to the caulking site, and the caulking site is deteriorated. There is a possibility that heat is generated by increasing the contact resistance due to contact with the pin.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a magnet type outlet adapter capable of preventing an increase in contact resistance due to contact with a terminal pin in a terminal portion.

  In order to achieve the above object, a pair of plug blades that can be inserted into and removed from an existing outlet are provided on one side and a terminal portion that is electrically connected to the plug blade, and a pair of terminals. A first adapter half comprising a container having an insertion hole through which the pin is inserted; a pair of terminal pins electrically connectable to the terminal portion through the insertion hole; and an electrical connection to the terminal pin; The first adapter half and the second adapter half are composed of a second adapter half composed of a container housing a blade receiving portion for receiving a plug plug blade provided in the plug that can be inserted into and removed from the outlet. The second adapter half can be attached to and detached from the first adapter half by a magnetic force acting between a magnet provided on one of the magnets and a magnetized piece made of a magnetic material provided on the other. Combined magnetic outlet adapter The terminal portion includes a terminal plate on which the blade is provided, a movable plate that contacts the terminal pin and is rotatable about the fulcrum portion provided on the terminal plate, and a direction intersecting the insertion direction of the terminal pin. And a reversing spring that urges the movable plate in a direction to contact the terminal plate.

  In order to achieve the above object, a pair of plug blades that can be inserted into and removed from an existing outlet are provided on one side of the invention, and a terminal portion that is electrically connected to the plug blade, and a pair of terminals. A first adapter half comprising a container having an insertion hole through which the pin is inserted; a pair of terminal pins electrically connectable to the terminal portion through the insertion hole; and an electrical connection to the terminal pin; The first adapter half and the second adapter half are composed of a second adapter half composed of a container housing a blade receiving portion for receiving a plug plug blade provided in the plug that can be inserted into and removed from the outlet. The second adapter half can be attached to and detached from the first adapter half by a magnetic force acting between a magnet provided on one of the magnets and a magnetized piece made of a magnetic material provided on the other. Combined magnetic outlet adapter The terminal portion includes a terminal plate that is provided with a plug blade and contacts with the terminal pin, and the second adapter half is provided with a spring member that biases the terminal pin in the insertion direction. And

  According to the invention of claim 1, since the contact pressure at the contact point is secured by the movable plate and the reversing spring provided separately from the terminal plate, the terminal plate does not require a plate spring, and the terminal plate is thick. The plug blade can be formed integrally. Therefore, there is no need to crimp the plug blade to the terminal plate, so that when the contact is pressed against the terminal pin, the connecting portion between the plug blade and the terminal plate is not deteriorated by applying stress to the crimped portion, and the terminal It is possible to prevent an increase in contact resistance due to contact with the terminal pin at the portion. In addition, since it is more resistant to repeated stress than a leaf spring, it is possible to prevent a decrease in contact pressure due to use over time, and to prevent heat generation due to an increase in contact resistance accompanying a decrease in contact pressure.

  According to invention of Claim 2, since a leaf | plate spring is not required for a terminal part, a terminal board can be formed thickly and a plug blade can be formed integrally. Therefore, there is no need to crimp the plug blade to the terminal plate, so that when the contact is pressed against the terminal pin, the connecting portion between the plug blade and the terminal plate is not deteriorated by applying stress to the crimped portion, and the terminal It is possible to prevent an increase in contact resistance due to contact with the terminal pin at the portion. Further, since the spring member is provided on the second adapter half side, it is not necessary to provide the spring member at the terminal portion, and the size can be reduced.

(Embodiment 1)
Hereinafter, Embodiment 1 of the magnetic outlet adapter according to the present invention will be described with reference to the drawings. In this embodiment, as shown in FIGS. 1 to 3, a pair of plug blades 12 that can be inserted into and removed from an outlet (not shown) of an existing outlet (not shown) are provided on one surface of the wall. A first adapter half A comprising a container 1 having terminal portions 13 electrically connected to the blade 12 and insertion holes 15a and 16a through which a pair of terminal pins 22 are inserted, and insertion holes 15a and 16a. A pair of terminal pins 22 that can be electrically connected to the terminal portion 13 via a plug, and a plug plug blade (not shown) provided on a plug (not shown) that is electrically connected to the terminal pin 22 and can be inserted into and removed from the outlet. A magnet 18 provided on the first adapter half A, a second adapter half B composed of a container body 2 that houses a blade receiving portion (not shown) that receives a blade receiver (not shown), Of the magnetic material provided in the adapter half B A second adapter half B is detachably coupled to the first adapter half A by magnetic attraction force acting between the pieces 26.

  As shown in FIG. 2 (a), the container body 1 of the first adapter half A is opened on one side and has a box body 10 having a front surface portion 10a that is connected to an outlet while opening one side. And a box cover 11 having a bottom surface portion 11a to which the second adapter half B is connected. The body 10 has an insertion hole (not shown) through which the plug blade 12 is inserted in the front surface portion 10a connected to the outlet. In addition, on both side surfaces of the body 10 (the front side and the back side in FIG. 2A), the holding portions 10b that are recessed in a concave shape projecting toward the cover 11 side from the coupling surfaces of the body 10 and the cover 11 respectively. Is provided. Thus, the body 1 is easily held by gripping the grip portion 10b with the fingers of the hand.

  As shown in FIG. 1, an inner body 14 of a box having a pair of plug blades 12 and terminal portions 13 connected to the respective plug blades 12 is inserted into the body 10 through the insertion holes. It is stored in the form. The middle body 14 has a pair of engaging projections 14c projecting from both side surfaces (the front side and the back side in FIG. 1 (a)), and a plug, which will be described later, is provided on the engagement projection 14c. The blade 12 and the engagement recess 12b of the terminal portion 13 are engaged, whereby the plug blade 12 and the terminal portion 13 are fixedly attached. Further, the middle body 14 is provided with a spring storage portion 14a in which only one side surface is closed, and a spring storage portion 14b in which only the other side surface is closed, and these spring storage portions 14a and 14b are reversed as described later. The spring 13c is stored.

  As shown in FIG. 1, a pair of screw insertion holes 10 c through which the assembly screws 3 are inserted are passed through the front surface portion 10 a of the body 10 in the longitudinal direction. The assembly screw 3 is inserted into and screwed into a pair of screw insertion holes (not shown) provided in 11, so that the body 10 and the cover 11 are coupled to each other. Here, in this embodiment, as shown in FIG. 2A, the angle formed between the normal direction of the front surface portion 10a and the normal direction of the bottom surface portion 11a of the device body 1 of the first adapter half A is as follows. It is formed to have an obtuse angle. That is, since the angle formed by the insertion / extraction direction of the plug blade 12 and the insertion / extraction direction of the terminal pin 22 is an obtuse angle, the amount of protrusion in the horizontal direction can be suppressed, and the insertion / extraction of the plug blade 12 as in the conventional example. The second adapter half B can be easily attached to and detached from the first adapter half A as compared with the case where the angle formed by the direction and the insertion / extraction direction of the terminal pin 22 is a right angle.

  As shown in FIG. 2A, the cover 11 is formed in a curved surface shape that curves from the coupling surface with the body 10 to the bottom surface portion 11a, and an insertion hole 15a through which the terminal pin 22 is inserted is provided on one surface. In addition, an intermediate cover 15 that holds the magnet 18, a door body 17 that is rotatable between a position where the insertion hole 15 a is closed and a position where the insertion hole 15 a is opened, and an insertion hole 16 a that communicates with the insertion hole 15 a are provided. The middle frame 16 holding the door body 17 is accommodated. As shown in FIG. 2B, an opening 11b is provided on the bottom surface 11b of the cover 11 so that the one surface of the middle cover 15 faces the outside.

  The middle cover 15 is formed in a long flat plate shape, and a pair of substantially circular insertion holes 15a are provided through the substantially central portion in the longitudinal direction as shown in FIG. Further, as shown in FIG. 1, both ends in the longitudinal direction are provided with flat plate magnets 18 and holding portions 15 b that hold a pair of flat plate yokes 19 that sandwich the magnets 18. As shown in FIG. 2 (b), one end portion of each yoke 19 is exposed to the outside through two pairs of substantially rectangular through holes 15c that are provided at both ends in the longitudinal direction across the pair of insertion holes 15a. It is open to the public. Thus, the first adapter half A and the second adapter half B are coupled by the magnetic force acting between the yoke 19 and the magnetic piece 26. Further, as shown in FIG. 2B, a convex positioning convex portion 15d that protrudes in a direction opposite to the insertion direction of the terminal pin 22 is provided at a substantially central portion in the longitudinal direction of the middle cover 15. Yes.

  As shown in FIG. 1, the middle frame 16 is formed in a long flat plate shape, and a pair of substantially oval insertion holes 16 a communicating with the insertion holes 15 a of the middle cover 15 are provided along the longitudinal direction. . The middle frame 16 sandwiches and holds the door body 17 with the middle cover 15.

  As shown in FIG. 1, the door body 17 is formed in a substantially oval shape so as to cover each insertion hole 15a, and is rotated to a position where the insertion hole 15a is closed by a spring member 17a made of a torsion coil spring attached to itself. It is energized to move. Further, although not shown, an inclined surface is formed on the surface of the door body 17 on which the terminal pin 22 abuts along the rotational direction of the door body 17, and the tip of the terminal pin 22 slides on the inclined surface. By doing so, the door body 17 is rotated to a position for opening the insertion hole 15a.

  As shown in FIGS. 3A and 3B, the second adapter half B includes a pair of terminal pins 22, a pair of magnetized pieces 26, and a pair of blade receiving portions. It is prepared for the body 2. The container body 2 is formed by combining a body 20 and a cover 21 each formed of a box having an opening on one surface. A pair of terminal pins 22 extends along the short direction through a pair of pin insertion holes 20c through which the terminal pins 22 are inserted in a substantially central portion of the upper surface of the vessel body 2 (the upper surface in FIG. 3A). The magnetized pieces 26 are disposed at both ends of the upper surface in the longitudinal direction. In a substantially central portion of the lower surface of the vessel body 2 (the lower surface in FIG. 3A), a substantially arc shape in which a plug plug blade of a plug provided in a load (not shown) such as an electric device can be inserted and removed. A pair of plug blade insertion holes 21a are provided therethrough. A concave positioning recess 20b that is recessed in the normal direction of the upper surface is provided along the longitudinal direction of the upper surface at a position sandwiched between the terminal pins 22 on the upper surface of the vessel body 2. The first adapter half A and the second adapter half B can be positioned by fitting the positioning protrusions 15d of one adapter half A.

  Here, as shown in FIGS. 1 and 4, each terminal portion 13 of the present embodiment has a fulcrum portion which is integrally formed with a plug blade 12 at one end portion and is bent into a mountain fold at the other end portion. A terminal plate 13a made of a metal plate having a metal plate, a movable plate 13b having a substantially U-shaped cross section that contacts the terminal pin 22 and is rotatable about a fulcrum portion A provided on the terminal plate 13a, and a terminal pin 22 It comprises a coiled reversing spring 13c provided along the direction intersecting the insertion direction and biasing the movable plate 13b in a direction to contact the terminal plate 13a. In addition, an insulating coating 12a is provided in the vicinity of the part formed integrally with the terminal plate 13a in the plug blade 12, and the width direction both ends of the part where the plug blade 12 and the terminal plate 13a are formed integrally. Are provided with engaging recesses 12b that engage with the engaging protrusions 14c of the inner cover 14, respectively.

  The movable plate 13b is arranged so that the substantially central portion of one surface facing the terminal plate 13a is in contact with the fulcrum portion a. Further, on one surface of the movable plate 13b that faces the terminal pin 22, a contact point 13d that contacts the tip of the terminal pin 22 is provided. Each reversing spring 13c is housed in the spring housing portions 14a and 14b of the middle body 14, one end of which is locked to the inner walls of the spring housing portions 14a and 14b, and the other end abutting against the movable plate 13b. Thus, the movable plate 13b is urged in a direction to contact the terminal plate 13a.

  Hereinafter, the connection operation between the terminal portion 13 and the terminal pin 22 will be described. When the terminal pin 22 is inserted through the insertion holes 15a and 16a and the contact 13d is pressed by the tip of the terminal pin 22, the movable plate 13b is moved to one side (left side in FIG. 4) with the fulcrum portion a as a fulcrum. While rotating, the reversing spring 13c bends to the one side. At this time, since the force that the reversing spring 13c tries to return to the original state acts on the movable plate 13b, a sufficient contact pressure between the contact 13d and the terminal pin 22 can be secured. When the terminal pin 22 is pulled out, the reversing spring 13c is restored to its original state by releasing the pressure applied by the terminal pin 22, and the movable plate 13b is rotated to the other side with the fulcrum part a as a fulcrum. Return to the original state.

  As described above, since the contact pressure between the contact 13d and the terminal pin 22 is secured by the movable plate 13b and the reversing spring 13c provided separately from the terminal plate 13a, the terminal plate 13a does not require a plate spring. The plug blade 12 can be integrally formed by forming the terminal plate 13a thick. Therefore, there is no need to caulk the plug blade 12 to the terminal plate 13a. Therefore, when the contact point 13d is pressed against the terminal pin 22, stress is applied to the caulked portion, so that the coupling site between the plug blade 12 and the terminal plate 13a is deteriorated. Therefore, it is possible to prevent an increase in contact resistance due to contact with the terminal pin 22 in the terminal portion 13. In addition, since it is resistant to repeated stress compared to the case where the terminal portion 13 is configured from a leaf spring, it is possible to prevent a decrease in contact pressure due to use over time, and to prevent heat generation due to an increase in contact resistance accompanying a decrease in contact pressure. be able to.

(Embodiment 2)
Hereinafter, a magnetic outlet adapter according to a second embodiment of the present invention will be described with reference to the drawings. However, since the basic configuration of this embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals and description thereof is omitted. The present embodiment is characterized by the terminal portion 13 of the first adapter half A and the terminal pins 22 and the blade receiving portion 23 of the second adapter half B.

  First, the structure of the second adapter half B will be described. In addition, the 2nd adapter half body B of this embodiment is the same structure as the 2nd adapter half body B of Embodiment 1 about the other site | parts except the blade receiving part. As shown in FIG. 5 (b), the second adapter half B is opened on one side and opened on one side with a box body 20 having a pin insertion hole (not shown) penetrating on the other side. In addition, the container body 2 is composed of a box cover 21 having a plug blade insertion hole 21a penetrating the other surface. The body 2 is provided in a substantially circular screw insertion hole 26a penetrating each magnetic piece 26 and a pair of screw insertion holes 20a and a cover 21 provided at both longitudinal ends of the body 20 respectively. The assembly screw 3 is inserted into and screwed into a pair of screw insertion holes (not shown).

  As shown in FIGS. 5A and 5B, the body 20 includes a pair of terminal pins 22, a pair of spring pieces 23a facing each other, and a connecting piece 23b for connecting the spring pieces 23a. A pair of blade receiving portions 23 and two conductive plates 24 made of a metal plate to which the connecting pieces 23b of the respective blade receiving portions 23 are caulked and fixed are accommodated, and one end of each terminal pin 22 and each conductive plate 24 are A spring member 25 that urges the terminal pin 22 in the insertion direction is disposed therebetween.

  The spring member 25 is a plate spring formed by bending a metal plate a plurality of times (three times in the drawing) into a substantially U shape, and one end portion thereof is fixed to one end portion of the terminal pin 22, The other end is fixed to the conductive plate 24 so that it can be bent in the insertion direction of the terminal pin 22. The terminal portion 13 includes a terminal plate 13a formed of a metal plate that is formed so that the plug blade 12 is integrally formed at one end and the other end is opposed to the terminal pin 22, and the other end of the terminal plate 13a. And a contact point 13d that contacts the tip of the terminal pin 22.

  Hereinafter, the connection operation between the terminal portion 13 and the terminal pin 22 will be described. When the terminal pin 22 is inserted through the insertion holes 15a and 16a and the contact 13d is pressed by the tip of the terminal pin 22, the spring member 25 bends in the direction opposite to the insertion direction of the terminal pin. At this time, since the force that the spring member 25 tries to return to the original state acts on the terminal pin 22, a sufficient contact pressure between the contact 13 d and the terminal pin 22 can be ensured. When the terminal pin 22 is pulled out, the spring member 25 returns to its original state by releasing the pressure applied by the terminal pin 22.

  As described above, since the leaf spring is not required for the terminal portion 13, the terminal plate 13a can be formed thick and the plug blade 12 can be formed integrally. Therefore, there is no need to caulk the plug blade 12 to the terminal plate 13a. Therefore, when the contact point 13d is pressed against the terminal pin 22, stress is applied to the caulked portion, so that the coupling site between the plug blade 12 and the terminal plate 13a is deteriorated. Therefore, it is possible to prevent an increase in contact resistance due to contact with the terminal pin 22 in the terminal portion 13. Further, since the spring member 25 is provided on the second adapter half B side, it is not necessary to provide the spring member 25 in the terminal portion 13 and the size can be reduced.

It is a disassembled perspective view of the 1st adapter half body which shows Embodiment 1 of the magnet-type outlet adapter which concerns on this invention. It is a figure which shows the 1st adapter half body same as the above, (a) is a side view, (b) is a bottom view. It is a figure which shows the 2nd adapter half body same as the above, (a) is the perspective view seen from the upper side, (b) is the perspective view seen from the lower side. It is a perspective view which shows the connection of the terminal part of a 1st adapter half body same as the above, and the terminal pin of a 2nd adapter half body. It is a figure which shows Embodiment 2 of the magnetic-type outlet adapter which concerns on this invention, (a) is a perspective view which shows the connection of the terminal part of a 1st adapter half body, and the terminal pin of a 2nd adapter half body, (b) ) Is an exploded perspective view of the second adapter half. It is a perspective view which shows the connection of the terminal part of the conventional 1st adapter half body, and the terminal pin of a 2nd adapter half body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 Body 12 Plug blade 13 Terminal part 13a Terminal board 13b Movable board 13c Reversing spring 15a, 16a Insertion hole 18 Magnet 22 Terminal pin 23 Blade receiving part 26 Magnetic attachment piece A 1st adapter half body B 2nd adapter Half body

Claims (2)

  A pair of plug blades that can be inserted into and removed from an existing outlet on one side, a terminal portion that is electrically connected to the plug blade, and a container body that has an insertion hole through which the pair of terminal pins are inserted. An adapter half, a pair of terminal pins that can be electrically connected to the terminal portion through the insertion hole, and a plug plug blade provided on the plug that is electrically connected to the terminal pin and can be inserted into and removed from the outlet. A second adapter half comprising a container for receiving the blade receiving portion, a magnet provided on one of the first adapter half and the second adapter half, and provided on the other A magnetic outlet adapter in which the second adapter half is detachably coupled to the first adapter half by a magnetic force acting between the magnetic pieces made of magnetic material, and the terminal portion is A terminal board with a blade A movable plate that contacts the terminal pin and is rotatable about a fulcrum provided on the terminal plate, and a direction that is provided along the direction intersecting the insertion direction of the terminal pin so that the movable plate contacts the terminal plate. A magnet type outlet adapter characterized by comprising a reversing spring for biasing.   A pair of plug blades that can be inserted into and removed from an existing outlet on one side, a terminal portion that is electrically connected to the plug blade, and a container body that has an insertion hole through which the pair of terminal pins are inserted. An adapter half, a pair of terminal pins that can be electrically connected to the terminal portion through the insertion hole, and a plug plug blade provided on the plug that is electrically connected to the terminal pin and can be inserted into and removed from the outlet. A second adapter half comprising a container for receiving the blade receiving portion, a magnet provided on one of the first adapter half and the second adapter half, and provided on the other A magnetic outlet adapter in which the second adapter half is detachably coupled to the first adapter half by a magnetic force acting between the magnetic pieces made of magnetic material, and the terminal portion is With a blade Consists terminal board child pin contacts, the second adapter half, Magnetic outlet adapter, wherein a spring member for biasing the terminal pins in the insertion direction is provided.

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