JP3090424B2 - Plug removal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug detaching device, and more particularly, to a device for automatically removing a plug of an electric appliance or an electric device from a socket when an earthquake occurs.

[0002]

2. Description of the Related Art An electric appliance having a built-in heater such as a microwave oven, a rice cooker, and an electric stove is heavy.
If you fall or fall in the event of an earthquake, you may hit the surrounding objects strongly, turn on the power switch,
There is a danger of falling over the power cord, damaging it, causing a short circuit or short circuit, and causing a fire.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to make it possible to reliably prevent fires caused by electric appliances and electric devices during an earthquake disaster.
An object of the present invention is to provide a plug detaching device capable of automatically extracting a plug from a socket when an earthquake occurs.

[0004]

In order to achieve the above object, the present invention provides a plug removing device including a plug, a socket into which the plug is inserted, and a plug for maintaining the plug in the socket. The push-out member that moves between the position of (1) and the second position to remove the plug from the socket, the seismic mechanism that detects the earthquake, and the push-out member are always located at the first position, A drive mechanism that, when activated, causes the extruding member to move to the second position, the extruding member being located between the female contacts of the socket and incorporated within the socket.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the plug detachment device of the present invention, when the seismic mechanism detects an earthquake, the drive mechanism moves the pushing member, and the pushing member moves between the female contacts of the socket to push up the plug. The plug is pulled out of the socket.

[0006] The removal of the plug is performed by the movement of the push-out member inside the socket, so that the space required for the movement of the push-out member is not required below the socket, and the thickness of the device is reduced.

In the apparatus of the present invention, the pushing member is incorporated into the socket by, for example, arranging the pushing member in a recess or groove provided in the socket between the female contacts. The extruding member is inserted by exposing a part to the hole provided in the socket.

In an embodiment of the present invention, the socket is disposed between the female contacts and has a through-hole sized to permit movement of the pusher between two positions, and along the female contact from the through-hole. The extruded member has a main body portion and a portion protruding from these, having an extending side hole,
The main body portion is inserted into the socket with the protruding portion positioned in the side hole and the protruding portion is positioned in the side hole, and when the extruding member is moved to the second position, the protruding portion pushes the plug to release the plug from the socket.

Further, in the embodiment of the present invention, the seismic sensing mechanism includes a weight and a spring member supporting the weight, and the drive mechanism rotates the arm member that can rotate and the rotation that moves the pushing member to the second position. A spring member loaded on the arm member to perform the rotation, a ratchet rotating together with the arm member, and engaging the ratchet when the pushing member is in the first position to rotate the ratchet and the arm member. And a pawl member that causes the pushing member to move away from the pawl wheel to the second position by the first spring member by vibrating the weight, and arm members are disposed on both sides of the socket. And the remaining components of the drive mechanism and the seismic It arranged parallel to the arm member, and is further reduced a device thickness.

An embodiment of the plug detachment device of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the plug removing device includes a pair of sockets 10 and a case 20.

As shown in FIGS. 3, 5 and 6, the socket 10 has a main body 11, a substrate 12, and female contacts 13 for contacting male contacts of a plug.
The main body 11 has two rooms 14 inside, and an opening 15 for inserting a male contact of a plug communicating with each room 14 is provided on a front wall. The substrate 12 has projections that fit into these chambers 14, is fitted from the rear opening of the main body 11, and seals the chambers 14. Female contact 13 is attached to substrate 12. The female contact itself includes a pair of contact members 16 and a contact member 17 for holding these contact members 16. The female contact 13 is fixed to the substrate 12 by projecting the contact member 17 from the back surface of the substrate 12. When the substrate 12 is fitted to the main body 11, the contact member 16 is in the room 14, and the contact member 17 is in the room 14. It is located outside the socket. Further body 11
Has a through hole 18 in the wall that partitions the room 14. The through hole 18 penetrates between the female contacts 13 and has both ends opened at the upper and lower surfaces of the main body 11. The through hole 18 extends along the female contact 13 and has a side hole 19 having an opening in the front wall of the main body 11. doing.

The case 20 comprises a base 21 and a cover 22, as shown in FIGS. The base 21 is formed of a synthetic resin molded article having a hollow box shape with an open front surface.
An opening 24 for exposing the back surface of the “0” is provided. Two partition walls 25 and 26 are incorporated inside the base 21 to form three rooms inside the base 21. These partition walls 25 and 26 are located on both sides of the opening 24, are arranged so as to connect the upper and lower walls of the base 21, and are formed integrally with the rear wall 23 of the base 21. Further, a support wall 27 is formed integrally with the base 21. This support wall 27 is divided into partition walls 25,
The length is shorter than 26, and is arranged to face the partition wall 26 and to be parallel to the side wall of the base 21. Cover 2
2 is a socket 1 as shown in FIG. 1, FIG. 2 and FIG.
0 is in the form of a hollow box having an opening 28 for exposing the front surface and having an open rear surface. The hollow box is covered with the base 21 and fixed to the base 21 with screws or the like.

The socket 10 has its front surface positioned at the opening 28 of the cover 22 and the contact piece member 17 is
3 and are spaced from each other in the center room of the case 20 so as to pass through the opening 24 in the case 20 and, as shown in FIGS. , 26a. Further, in the case 20, an extruding member 31 for pulling out a plug inserted into the socket 10 is provided.
In addition, a drive mechanism for operating the pushing mechanism by the operation of the seismic mechanism is incorporated in the other room in one of the rooms where the seismic mechanism is located on both sides in the central room in the base 21.

The pushing member 31 is provided in the through hole 1 of the socket 10.
8 is inserted. The extruding member itself is a member having an I-shaped cross section. As shown in FIG. 5, a main body portion 32 having an elongated plate shape and two portions 3 protruding from the main body portion 32 are formed.
3 is provided. These projecting portions 33 are arranged at intervals corresponding to the intervals formed by the side holes 19 of the two sockets 10. A tip 34 is engaged and fixed to each protruding portion 33. Incorporation into the socket 10 is achieved by connecting the protrusion 33 and the chip 34 to the socket 1.
The main body portion 32 is located in each of the 0 side holes 19 and is made by passing through the through hole 18 of each socket 10.

The drive mechanism has an arm member 41 and a shaft 42 for holding the arm member 41. The shaft 42 is disposed above and below the socket 10, and both ends are held by bearings provided on the partition walls 25 and 26 of the base 21.
The arm member 41 has one end fitted to the shaft 42,
Further, it is fixed to the shaft 42 by a set screw or the like, and the groove at the other end is fitted to the end of the pushing member 31. The pins 43 are fitted into the long holes in the arm member 41 and the long holes at both ends of the pushing member 31 to connect the arm member 41 and the pushing member 31, and when the arm member 41 rotates about the shaft 42. ,
The extruding member 31 is moved in parallel. As shown in FIG. 3, the spring 44 is a torsion coil spring having two coil portions. The intermediate portion is brought into contact with the arm member 41, the ends are brought into contact with the base 21, and the coil portion is brought into contact with the shaft 42 of the arm member 41. The arm member 41 is rotated counterclockwise as shown by a chain line in FIG.
The push-up member 31 is flipped up. However, the push-up member 31 is positioned at the position shown by the solid line in FIG. 5 by the ratchet wheel 45 and the pawl 46, the gear trains 50 to 53, and the like, as described below.

The ratchet wheel 45 is fitted and fixed to a shaft 47 as best shown in FIG. The shaft 47 is held by bearings on the partition wall 26 and the support wall 27. A pawl 46 is engaged with a tooth of the pawl 45. The pawl 46 is engaged and fixed to a shaft 48. The shaft 48 is held at both ends by bearings on the partition wall 26 and the support wall 27. The spring 49 is a torsion coil spring whose coil portion is fitted on the shaft 48 and whose both ends are engaged with the pawl 46 and the shaft 48, so that the pawl 46 is always engaged with the ratchet wheel 45.

A gear 50 is provided on the shaft 47 of the ratchet wheel 45.
Is the partition wall 26 on the shaft 42 of the arm member 41.
A gear 51 is engaged and fixed to an end protruding from the gear 51. Between these gears 50 and 51, double gears 52 and 53 are arranged. These double gears 52,
Reference numeral 53 designates two gears having different nominal diameters arranged coaxially. The shaft is held by bearings provided on the partition wall 26 and the support wall 27 of the base 21. The double gear 52 has a large gear meshed with the gear 50, a small gear meshed with a large gear of the double gear 53, and a small gear of the double gear 52 meshed with the gear 51. The bell crank 54 is engaged and fixed to a shaft 55, and the shaft 55 is held by bearings provided on the partition wall 26 and the support wall 27. The bell crank 54 has one end in contact with the end of the pawl 46 opposite to the end that bites into the ratchet wheel 45, and the other end in the rod member 5.
6 is connected to one end by a pin. The other end of the rod member 56 is pin-connected to one end of the arm member 57. The arm member 57 traverses the base 21 with the end opposite to the end connected to the rod member 56 positioned in the room containing the seismic mechanism, as best shown in FIG. It is arranged and rotatably attached to the partition wall 26 by a pin 58. When the arm member 57 rotates clockwise about the pin 58 in FIG. 3, the rod member 56 moves downward, and the bell crank 54 rotates counterclockwise about the shaft 55 in FIG. The pawl 46 can be rotated clockwise by the spring 49 and the lower pawl 46 can be rotated counterclockwise by the spring 49 to allow the pawl wheel 45 to be free. And pawl 4
A knob 72 is fitted and fixed to a portion of the shaft 47 of the fifth shaft projecting from the side wall of the base 21, and by rotating the knob 72, the gear 50 of the ratchet wheel 45
Via coaxial gears 52 and 53 and gear 51, spring 44
, The arm member 41 can be rotated in the opposite direction.

As shown in FIG.
It has. The weight 61 has a rectangular parallelepiped shape, is disposed between the side wall of the base 21 and the partition wall 25, and is slidable on rails provided integrally with the rear wall 23 in parallel with these walls. It is listed in. A spring receiver 62 is arranged below the weight 61. A coil spring 63 is disposed between the weight 61 and the spring receiver 62. Weight 61 and coil spring 6
Reference numeral 3 denotes a vibration system, and when vibration of a certain frequency is applied to the device, the weight 61 resonates. A pin 64 is engaged with the upper end of the weight 61 and is screwed. The arm member 57 of the drive mechanism has a weight 6 at the end opposite to the end connected to the rod member 56.
The weight 61 is in contact with the tip of one pin 64 and rotates when the weight 61 resonates due to the earthquake, so that the bell crank 54 can be rotated via the rod member 56 and the ratchet wheel 45 can be released. The spring receiver 62 is provided on the base 2.
The position of the screw member 65 is fixed to a screw member 65 screwed into the spring receiver 62 through an elongated hole in the rear wall 23.
And by moving the spring receiver 62, the spring force of the coil spring 63 can be changed.

This plug removing device is attached to a wall outlet 70 already installed in a house, for example, as shown in FIG. The wall outlet 70 has a known configuration,
The surface is exposed to the surface of the wall surface W and is embedded inside the wall. Mounting is female contact 1 of socket 10
3 by inserting the contact piece 17 penetrating the back wall of the base 21 into a socket incorporated in the wall outlet 70.

A plug 71 at the end of a power cord such as an electric heater or a microwave oven is inserted into the socket 10 of the plug removing device in the same manner as when plugged into the wall outlet 70. At this time, the pushing member 31 of the plug removing device according to the present invention is pushed down to the position shown by the solid line in FIG. 5, the arm member 41 is twisting the spring 44, and the pawl 46 is engaged with the ratchet wheel 45. And pushing member 3
1 is fixed, and the tip 34 of the pushing member 31 is in contact with a region of the plug 71 between the male contacts.

When an earthquake occurs and the weight 61 vibrates, the pin 64 of the weight 61 pushes the arm member 57 to rotate the arm member 57. When the arm member 57 rotates clockwise in FIG. 3 around the pin 58, the rod member 56 moves downward, and the bell crank 54
, The shaft 55 rotates counterclockwise about the shaft 55.
When rotated, the upper pawl 46 rotates clockwise about the shaft 48 against the spring 49, and the lower pawl 46 rotates counterclockwise about the shaft 48 against the spring 49. Move away from 45. When the ratchet wheel 45 becomes free, the arm member 41 at the top in FIG.
4 rotates clockwise, and at the same time, the lower arm member 41 rotates counterclockwise by the spring 44. When the arm member 41 rotates, the pushing member 31 moves in parallel in a direction opposite to the insertion direction of the plug 71, and as shown by a dashed line in FIG. 5, the tip 34 fitted to the projecting portion 33 of the pushing member 31 pushes the plug 71. , The plug 71 is detached from the socket 10. For this reason, even if an earthquake occurs during the operation of the electric heater or the microwave oven, energization is immediately stopped, and even if these fall down, fire does not occur. Return is
By rotating the knob 72, the gear 50, the double gears 52, 53 and the gear 51 of the ratchet wheel 45 are reversed, and while the spring 44 is twisted, the arm member 41 and the push-out member 31 are moved.
From the chain line to the position indicated by the solid line.
Is inserted into the socket 10 after the position of the push-out member 31 is fixed by inserting the plug 71 into the socket 45.

[0023]

As described above, the plug detachment device of the present invention can automatically remove the plug connected to the power supply from the socket when an earthquake occurs. In addition to eliminating the possibility of injury or death, there is no need for a space under the socket to accommodate the push-out member, so the device can be made thinner. Other objects do not collide and come off.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a plug detachment device of the present invention.

FIG. 2 is a side view.

FIG. 3 is a front view showing a state where a cover is removed.

FIG. 4 is a sectional view of the apparatus taken along line AA of FIG. 3;

FIG. 5 is a sectional view of the apparatus taken along the line BB of FIG. 3;

FIG. 6 is a sectional view of the socket taken along the line CC of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Socket 31 ... Extruded member 33, 34 ... Part of extruded member 41-58 ... Drive mechanism 61-65 ... Seismic mechanism 71 ... Plug

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroharu Kosaka 1-1-13 Hatagaya, Shibuya-ku, Tokyo Inside the Fire Defense Research Institute of Tokyo Fire Department (72) Inventor Kazuo Kato 1-1-13-20 Hatagaya, Shibuya-ku, Tokyo, Tokyo Inside Fire Research Institute of Fire and Disaster Management Agency (72) Masahiro Kataoka 1-13-20 Hatagaya, Shibuya-ku, Tokyo Inside Fire Research Institute of Tokyo Fire Department (72) Ryosuke Kubodera 5-6-46 Shimoishikami, Nerima-ku, Tokyo No. Yakko Electric Co., Ltd. (72) Inventor Toshihisa Eshiro 5-6-46 Shimoishikami, Nerima-ku, Tokyo Examiner, Yakko Electric Co., Ltd. Hideyuki Maruyama (56) References JP-A-9-245901 ( JP, A) JP-A-9-283217 (JP, A) JP-A 1-152473 (JP, U) JP-A 5-65077 (JP, U) JP-A 62-67475 (JP, U) JP 1983-35260 (JP, U ) Registered utility model 3018144 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 13/56-13/72

Claims (4)

(57) [Claims] The method includes the steps of: moving a socket including a plug into which the plug is inserted; and a first position for maintaining the plug in the socket and a second position for detaching the plug from the socket. An extruding member, a seismic sensing mechanism for detecting an earthquake, and a drive mechanism for causing the extruding member to move to the second position when the extruding member is always located at the first position and the seismic sensing mechanism is activated. Wherein the pushing member is located between the female contacts of the socket and is incorporated in the socket. 2. A movement including a plug into which the plug is inserted and a first position for keeping the plug inserted into the socket and a second position for detaching the plug from the socket. An extruding member, a seismic sensing mechanism for detecting an earthquake, and a drive mechanism for causing the extruding member to move to the second position when the extruding member is always located at the first position and the seismic sensing mechanism is activated. A socket having a through hole disposed between the female contacts and having a size allowing the pusher to move between the two positions, and a side hole extending from the through hole along the female contact; An extruding member having a main body part and a part protruding from the main body part, and the main body part is incorporated in the socket with the protruding part positioned in the side hole and the protruding part positioned in the side hole. . 3. A movement including a plug and including a plug into which the plug is inserted, and a first position for maintaining the plug in the socket and a second position for removing the plug from the socket. An extruding member, a seismic sensing mechanism for detecting an earthquake, and a drive mechanism for causing the extruding member to move to the second position when the extruding member is always located at the first position and the seismic sensing mechanism is activated. Wherein the socket is disposed between the female contacts and has a through hole sized to permit movement of the pushing member between the two positions to the pushing member, and a side hole extending from the through hole along the female contact. A member having a main body portion and a portion protruding from the main body portion, the protruding portion being disposed in the through hole with the protruding portion positioned in the side hole, the seismic sensing mechanism including a weight and a spring member supporting the weight; A rotatable arm member coupled to the extruding member, a pawl wheel and an extruding member rotating with the spring member and the arm member loaded to the arm member to make a rotation for moving the extruding member to the second position; Engages with the pawl when in the first position,
A pawl member for stopping rotation of the ratchet wheel and the arm member, and causing the pushing member to move away from the pawl wheel to the second position by a first spring member by vibration of the weight, wherein the arm member is a socket. Are connected to a portion of the pushing member coming out of the socket, and the remaining components and the seismic mechanism of the drive mechanism are arranged in parallel with the socket and the arm member. To remove the plug. 4. Apparatus according to claim 3, wherein the drive mechanism comprises a gear train for transmitting the rotation of the ratchet to the arm member.