JPH0245975Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a safety outlet.

(Prior Art) A general electrical outlet has a contact placed at a position corresponding to the outlet and a terminal connected to a power source. These contacts and terminals are integrally formed of a conductive plate material. Then, when the contact of the plug is inserted through the outlet and brought into contact with the contact of the outlet, the plug is energized. With such a structure, if a child were to mischievously insert a conductive member such as tweezers, clips, wire, nails, scissors, etc., there was a risk that the conductive member would come into contact with the contact and cause an electric shock.

Therefore, recently, safety outlets have been developed in which the outlet is closed with a lid. Some safety outlets of this type have a lid that automatically rotates to close the socket when the plug is removed, and others that close the socket by manually operating the lid.

(Problem that the invention attempts to solve) However, with the above-mentioned lid-closing safety outlet,
It was relatively easy for a child to open the socket by operating the lid, and safety was not sufficiently ensured.

(Means for Solving the Problems) The present invention has been made to solve the above problems, and its gist is: (a) It is hollow and has an outlet into which the contact of the plug is inserted. The outlet body, (b) the contact placed inside the outlet body and in contact with the contact of the plug, (c) the terminal placed inside the outlet body and connected to the power supply side, and (d) the outlet body (e) an operating body that is slidably supported by the outlet body and closes the switch when moved toward the plug; (f) An elastic body inside the outlet body that pushes back the contacts of the plug inserted into the outlet by a certain amount; The safety electrical outlet is characterized in that it is provided with a locking member that locks and causes the operating body to follow the plug when the plug is pushed back by the elastic body.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. Figures 1 to 5 show the outlet 10 of the present invention.
6 and 7 show a plug 50 to be connected to this outlet 10.

The plug 50 includes a plug body 51 and a contact 52 protruding from one end surface of the plug body 51.

The outlet 10 has a hollow outlet main body 11. This outlet main body 11 is constructed by connecting two half-split cases 11a and 11b to each other.

The upper case 11a is formed with a recess 12 for accommodating a part of the plug body 51, and the bottom of the recess 12 is formed with two insertion ports 13 into which the contacts 52 of the plug 50 are inserted. ing.

As shown in FIGS. 1 and 4, the lower case 11
Two partition walls 14 are integrally formed in b, and the partition walls 14 divide the inside of the outlet main body 11 into three storage chambers 15a, 15b, 15.
It is divided into c.

Contactors 20 made of conductive leaf springs are stored and fixed in the storage chambers 15a and 15b on both sides, respectively. This contactor 20 includes a flat base 20a installed on the bottom surface of the lower case 11b, and a flat base 20a installed on the bottom surface of the lower case 11b.
It has both side pieces 20b rising from 0a. Both side pieces 20b extend toward the insertion port 13, are in contact with each other or are close to each other, and have open ends to form a receiving portion 20c. Contact 20
An elastic body 21 made of a plate spring is housed inside. As shown in FIG. 3, this elastic body 21 has a base 21a and both side pieces 21b.
b are inclined toward each other toward the tip.

As shown in Figures 2 and 4, the central storage compartment 1
5c, a pair of terminals 22 are housed and fixed apart from each other. This terminal 22 is made of a conductive plate spring, and has a base 22a fixed to the lower case 11b.
, an inclined part 22b extending from the base 22a in an inclined manner toward each other, and furthermore, this inclined part 2.
Slanted portions 22 extending in directions away from each other from 2b
It has c. Power supply side wire (not shown)
is inserted through the insertion hole 16 formed in the lower case 11b and connected to the base 22a of the terminal 22.

The terminal 22 is electrically connected to the contactor 20 described above via a switch 23. More specifically, as shown in FIG. 4, each contactor 20 is connected to a connecting member 24 made of a conductive plate spring. Note that the connecting member 24 and the contactor 20 may be integrally formed by one conductive plate spring.
The connecting member 24 passes through the partition wall 14 and extends to the central storage chamber 15c, where it is bent into a V-shape as shown in FIG. Connection member 24
The switch 23 is constituted by the tip contact portion 24x of the terminal 22 and the tip contact portion 22x of the terminal 22.

A small diameter recess 17 is formed in the center of the bottom surface of the recess 12 of the upper case 11a.
An insertion hole 18 and a slit 17a for air venting are formed on the bottom surface. Also, lower case 11
An insertion hole 19 is also formed in the center of b. A rod-shaped actuating body 26 is inserted into these insertion holes 18 and 19 so as to be slidable in the axial direction thereof. The actuating body 26 passes between the pair of terminals 22 described above in the central storage chamber 15c. Working body 26
has a large-diameter head 26a at one end, and this head 26a is housed in the recess 17 of the upper case 11a. The other end of the actuating body 26 protrudes from the lower case 11b and has a threaded portion 26b. A nut 27 that restricts movement of the actuating body 26 is fixed to the threaded portion 26b so that its position can be adjusted. There are projections 26c on both sides of the middle part of the actuating body 26.
is formed, and this protrusion 26c is in contact with the inclined portion 22b of the terminal 22 described above. Working body 2
6 is connected to the lower case 11 by the elastic force of this terminal 22.
It is constantly biased in direction b. Note that this terminal 2
The elastic force of the elastic body 21 is weaker than that of the elastic body 21.

The head 26a of the operating body 26 has a shallow recess 26d.
is formed in the recessed portion 26d, and a planar fastener 30, which is called magic tape in its trade name, is formed in the recessed portion 26d.
(anchoring member) is housed and fixed by adhesive or other means. On the other hand, as shown in FIGS. 5 and 6, a recess 53 is formed in the surface of the plug body 51 on the contact 52 side, and a sheet fastener 54 is also formed within this recess 53.
The storage is fixed. The above fastener 30.5
4, one is female and the other is male.

In the above configuration, the actuating body 26 is always urged toward the lower case 11b by the elastic force of the terminal 22, the lower surface of the head 26a contacts the bottom surface of the recess 17, and the upper end surface of the head 26a contacts the upper case 11b.
It is flush with the bottom surface of the recess 12 of 1a. Further, in this state, the switch 23 is open.

When the contact 52 of the plug 50 is inserted into the outlet 13 of the outlet 10 and pushed in, the contact 52 moves from the receiving part 20c of the contact 20 to the side pieces 20.
It is press-fitted between b. As a result, both contacts 20, 5
2 contacts are obtained. When the plug 50 is further pushed in, the plug body 51 is inserted into the recess 1 of the outlet 10.
It corresponds to the bottom of 1. At this time, the fastener 30 fixed to the actuating body 26 is attached to the fastener 54 of the plug 50.
Attach to.

When the plug 50 is pushed in until it hits the outlet 10 as described above, the contact 52 pushes the elastic body 21 inside the outlet 10 and elastically deforms it, and when the plug 50 is released, the elastic body 21 The elastic force of 21 pushes back a certain amount (for example, about 3 to 3.5 mm). Note that even if the plug 50 is pushed back a little, the contact state between the contact 52 and the contact 20 is maintained. When the plug 50 is pushed back, the actuating body 26, which is attached to the plug 50 via the fasteners 30 and 54,
Follow the plug 50. The operating body 26 is the plug 50
When the protrusion 26c moves to the side, the protrusion 26c pushes the inclined part 22b of the terminal 22 in the lateral direction, and the tip part 22x of the terminal 22
contacts the tip 24x of the connecting member 24, and the switch 23 is closed. As a result, the contact 52 of the plug 50 is electrically connected to the terminal 22 via the contact 20 of the outlet 10, the connecting member 24, and the switch 23, and the plug 50 is energized.

When the plug 50 is pulled out, the actuating body 26 also tries to be pulled out, but since the nut 27 hits the lower case 11b, the actuating body 26 is stopped. As a result, the engagement between the actuating body 26 and the plug 50 by the fasteners 30 and 54 is released by the pulling force of the plug 50, and the actuating body 26 returns toward the lower case 11b by the elastic force of the terminal 22. . At this time, the switch 23 is opened and the terminal 22 and the contactor 20 are electrically cut off.

The switch 23 connects the plug 50 to the outlet 10.
It is closed only by once pushing it in and releasing it, and is normally open to electrically isolate between the contactor 20 and the terminal 10. Therefore, even if a child accidentally inserts the conductive member into the outlet 13 of the outlet 10 and contacts the contact 20, electricity will not be supplied to the conductive member, thereby preventing the risk of electric shock.

Since the head 26a of the actuating body 26 normally does not protrude from the outlet body 11, it cannot be pinched and pulled with fingers or tweezers. Further, since there is almost no gap between the head 26a and the inner surface of the recess 17, it is impossible to insert tweezers or the like and pull it. Therefore, it is difficult for the operating body 26 to be moved due to a child's mischief, and the switch 23 will not be closed, thereby ensuring safety.

The present invention is not limited to the above embodiments and can be modified in various ways. For example, instead of the above-mentioned fastener, as an engaging member that causes the actuating body to follow the plug,
A suction cup may also be used. Furthermore, the actuating body may be provided with a magnet and the plug may be provided with a magnet or an iron plate, or the plug may be provided with a magnet and the actuating body may be provided with an iron plate. Adhesives, mechanical fastening mechanisms, etc. are also possible.

(Effects of the invention) As explained above, in the safety outlet of the invention, the contact that contacts the contact of the plug and the terminal connected to the power supply side are electrically connected via the switch. This switch is closed only by inserting the plug, and simply inserting the conductive member into an outlet does not supply electricity to the conductive member, thereby reliably preventing the risk of electric shock.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of an outlet that is an embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view taken along the line - in FIG. 1, and FIG. 3 is a diagram showing an elastic body housed in the outlet. Fig. 4 is a cross-sectional view along the line - in Fig. 1, Fig. 5 is a plan view seen from the direction in Fig. 1,
FIG. 6 is a front view of the plug, and FIG. 7 is a bottom view of the plug. 10... Outlet, 11... Outlet body, 20... Contact, 21... Elastic body, 22...
Terminal, 23... Switch, 26... Operating body, 30
... Fastener (locking member), 50 ... Plug,
52...Contact child.

Claims (1)

[Scope of Claim for Utility Model Registration] (a) An outlet body that is hollow and has an outlet for inserting the contact of the plug, and (b) A contact that is placed inside the outlet body and comes into contact with the contact of the plug. (c) a terminal placed inside the outlet body and connected to the power supply side, and (d) a switch placed inside the outlet body that electrically connects or disconnects the contactor and the terminal. , (E) Supported in a slidable manner by the outlet body,
an actuating body that closes the switch when moved toward the plug; (f) an elastic body that pushes back the contact of the plug inserted into the outlet by a certain amount within the outlet body; and (g) the plug side of the actuating body. The device is characterized by comprising a locking member provided at the end, which locks the actuating body to the plug when the plug is inserted, and causes the actuating body to follow the plug when the plug is pushed back by the elastic body. safety outlet.