JPH11126652A - Outlet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outlet in which when heat is generated in a plug or the outlet, the plug is automatically separated from the outlet to shut off the flow of current, a gap is produced between contact surfaces of plug and outlet to inform the danger and prevent troubles such as fire. SOLUTION: A plug has a shape memory alloy 2 and a core rod 9 so that the heat generation in a terminal 6 is transmitted to the shape memory alloy 2, the shape memory alloy 2 detects heat, and by utilizing the force generating in the shape memory alloy 2, the plug is separated from the outlet by the action of the core rod 9 to automatically shut off the flow of a current.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The outlet according to the present invention, when it is necessary to receive or supply electricity such as weak electricity and strong electricity, the plus and minus wires of the electrodes are covered with each other to form a single wire. A pair of receiving terminals are provided inside a receiving terminal outlet formed by arranging a single wire, and the receiving terminal outlet has a plug-in side outlet terminal pair to which a cord is connected. It is an outlet that is plugged in and connected and required when receiving or supplying electricity.However, depending on each application, a terminal outlet is provided with a plurality of receiving sides, and a plurality of receiving sides are connected while providing a plurality of receiving sides. There is also a single outlet provided, each of the outlets described above can be plugged in and connected, and the operation of electrical products and the need for electricity A outlet plug side to make the case to perform the energization.

[0002]

2. Description of the Related Art Outlets themselves include an outlet having a pair of plug-in terminals, a receiving outlet having a pair of terminals inside the receiving side, and an outlet having only a plurality of receiving sides. . In addition, there are outlets provided with a plurality of outlet receiving sides and a pair of insertion terminals in a direction opposite to the outlet receiving side, and there are outlets commonly called triple taps and triangular taps (hereinafter referred to as taps). It is not designed for an automatic release structure.

[0003] The outlet is used in a pair of outlets with a plug-in terminal provided at the end of a lead wire (hereinafter referred to as a cord) associated with electrical appliances and equipment. When the cable length is insufficient, an extension cord (hereinafter referred to as a trunk line) is used, and the trunk line is used with a pair of receiving outlets on one side and a plug-in outlet on the other side. In addition, in the state where the plug terminals are connected to the taps which are the outlets on the receiving side, the receiving side is used by connecting to the terminal outlet where only one place is formed, and furthermore, the respective plugging terminals as described above are connected In the state of the tapped, the receiving side may be connected to each of the plurality of formed terminal outlets, and the connection method in which the plurality of insertion terminals are simultaneously connected to the plurality of receiving sides is commonly called “octopus foot wiring”. It is said to be used.

[0004] For the above-mentioned outlet and method of use,
In the case of new construction, etc., there is a margin with the prescribed wire diameter, but since the wiring itself is the minimum wire diameter covered, the outlet itself is not used properly. There were various problems.

[0005] Further, when a terminal outlet provided with a plurality of receiving-side outlets as described above is used while being connected to a plurality of taps in a state of being inserted into each of the taps, it is also commonly called "octopus foot wiring". Although it is usually done, it is common practice that the coated single wire is supposed to use the same number of insertion terminals as the number of receiving sides of the plurality of terminators. ing.
However, in practice, octopus foot wiring is frequently used, and the current situation is that the electrical supply side or the manufacturer of electrical products is instructing the proper connection method to be used because of the undesirable wiring. It is. In addition, even though the single line covered up to the terminal is not wired to the line capacity where the current to be supplied is assumed to be too large considering the octopus wiring, the relay line etc. are also normal It was purchased with a current-carrying wire, connected to each outlet, and used as shown above.

[0006]

Therefore, an overcurrent is caused by the above-mentioned outlet structure or an improper outlet connection method, for example, because current is concentrated at one place. In the case of a single plug-in connection between the outlet on the plug-in side and the outlet on the receiving side, if the wiring connection is poor and the terminal is defective, or if the plug-in is connected for a long period of time, dust and dirt will not be present In addition to the breaker operating due to overcurrent due to accumulation of dust, etc., the current concentrates on one wiring path, and even in the breaker capacity range, the heat generation phenomenon occurs in the wiring, causing a fire when it is severe There were many things to do. Therefore, an object of the present invention is to solve the problem described above, when an abnormal plugging of an outlet occurs due to an overcurrent or concentration of current, which occurs when an inappropriate plugging condition of the outlet is described above. The challenge is to make it an outlet with a functional structure that can be automatically detached from the outlet.

[0007]

As described above, since the power is supplied by connecting the outlet on the insertion side and the outlet on the receiving side, an overcurrent has occurred due to the above-described causes and other problems. In such a case, it is necessary to maintain a function of automatically disconnecting the outlet on the insertion side from the outlet on the receiving side, and to have a functional structure for interrupting the current. It is also possible to provide the functional structure of the present invention in the outlet on the receiving side, but in order to reduce costs, the outlet on the plug-in side is required, and the functional structure that can be shut off is used.

[0008] An ordinary outlet on the plug-in side has a pair of terminals, which are plug-in portions, provided on the outlet main body side and sandwiched between the lid side. In this case, the internal structure of the main body side is such that a pair of terminals are fixed to the left and right, and the two wires covered with one wire are made bare from an arbitrary position from the outlet entrance, and the bare wire is Each is screwed to the terminal in a state of being wound clockwise around the screw hole of the terminal. Therefore, according to the structure of the present invention, the interior of the outlet, which is sandwiched and integrated as described above, is provided with a pair of insertion terminals on the left and right, located between the left and right terminals and located at the center of the outlet itself. At the location where the contact is made, a cavity with an arbitrary interval, width and depth is provided for the purpose of preventing the contact of the terminal and the wiring and of providing the shape memory alloy and the mandrel, and the lower part of the cavity is formed in a dead end state. The outlet is the central part of the outlet where the terminal protrudes. It is formed to protrude only. In this case, a space portion is provided at an arbitrary position near the center portion of the above-mentioned hollow portion formed on the plug side of the outlet main body side of the insertion side and the lid side of the plug side main body of the insertion side, and near where the left and right terminals are screwed. Then, the heat trapped in the left and right terminal portions easily flows from the space to the inside of the cavity, and the shape memory alloy is formed in a state where the temperature can be easily detected.

In the cavity provided as described above, a spiral shape memory alloy is provided, and further, a mandrel holding an arbitrary length, shape and projection is provided inside the shape memory alloy, The shape memory alloy uses the generated force generated by the degree of temperature detection, and the mechanism of the mandrel by the generated force is pushed out to the outlet side by an arbitrary distance, and in this state of the mechanism, the lid side is the body side Covered with
The main body side and the lid side are fixed by screws through predetermined screw holes and used. Because of the functional structure provided above, the overall size is larger than that of a normal outlet, and the space between the pair of terminals and the terminal insertion portion is also wider.However, the terminal insertion portion extends from the portion where the insertion terminal protrudes from the outlet, to the normal terminal width. In order to make the interval, the shape is bent inward.

[0010]

[Function] In the above-mentioned plug-in outlet function structure, the receiving-side plug terminal is improperly connected, or the plug-in side plug terminal is improperly connected, or dust or dirt accumulates on one or each of the above-mentioned plug sockets. If the outlet terminal generates heat due to contact, or if the outlet terminal generates heat due to the concentration of current at the terminal due to octopus wiring, etc., install it in the cavity through the space from the outlet terminal side of the insertion side This is the mechanism by which heat is transmitted to the formed shape memory alloy.

In this mechanism, the shape memory alloy generates a force at the same time as the heat is detected, and the force generated by the shape memory alloy gradually increases as the terminal heat increases. Are pushed out by the generated force, and the pushed-out end portion of the mandrel pushes the receiving-side outlet surface, so that the plug-in-side outlet terminal comes out of the receiving-side outlet terminal. As the terminal heat further increases, when the deformation temperature stored in the shape memory alloy is reached, the outlet terminal of the insertion side is disconnected from the outlet terminal of the receiving side, and the weight of the wiring itself connected to the outlet of the insertion side is reduced. To join,
It drops off from the outlet on the receiving side and completely shuts off the flow of current.

Also, as described above, there is a problem not only with the plug socket on the plug-in side and there is a problem, but also with a problem with the plug socket on the receiving side. Since the heat is transmitted to the outlet, the functional structure of the outlet on the plug-in side works.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front internal view of an outlet main body on the plug side, FIG. 2 is a front internal view of a lid side of the plug main body on the plug side, and FIG. It is the combined three-dimensional perspective view. From the above-mentioned figure, two bare wires of arbitrary length are formed from the wiring entrance 1 where one covered wire is wired, and the bare wires are used as the insulating walls 3 and 12 of the cavity 9 '. Outside and the wall 3 'of the cavity 9'
And the outside of the wall 12 ', respectively, and the bare wire is rounded to the screw holes 7 and 7' provided in the terminal 6 and the terminal 6 'and fixed by screws. The hollow portion 9 ′ is provided with a spiral shape memory alloy 2 and a mandrel 9 inside the shape memory alloy 2, and an arbitrary arbitrary position in the middle of the mandrel 9 is formed in a convex shape, and a terminal is formed. When the mandrel 9 is pushed outward due to the heat generated by the heat generated from the terminal 6 and the terminal 6 ', the entire length of the mandrel 9 does not jump out due to the convex shape. This is a mechanism to protrude by an arbitrary length. Also, in the hatched portion on the wall side of the outlet main body on the plug-in side and the hollow portion 9 'on the outlet lid side, spaces 5, 5', 14, 1 having an arbitrary concave shape are provided.
4 'is provided. When the terminals 6 and 6' generate heat, heat flows into the cavity 9 'through the above-mentioned space. 2 and the screw hole 4 and the screw hole 13 ', the screw hole 4' and the screw hole 13, the screw hole 8 and the screw hole 15 ', and the screw hole 8' and the screw hole 15 respectively. It is fixed by a stop screw.

When the terminals 6 and 6 'generate heat in the state shown in FIG. 1 of the fixed plug-in outlet body and FIG. 2 of the plug-in plug cover, the hollow portion 9' comes from the space portion 4 '.
When the shape memory alloy 2 detects the heat flowing through the shape memory alloy 2, the shape memory alloy 2 retains the generated force that tends to expand, and the generated force acts to push out the mandrel 9, and the extruded mandrel 9 Since the mandrel tip 11 hits the surface of the receiving outlet, the plug-in outlet comes out of the receiving outlet.

[0015]

According to the present invention, if any one of the terminals inside the outlet on the insertion side and the terminal inside the outlet on the receiving side rises in temperature for some reason, the shape memory alloy detects the temperature. When the mandrel activated by temperature detection extends a certain distance at an arbitrary temperature, it hits the receptacle surface of the receiving side, and the corresponding reaction force causes the pair of outlet terminals on the insertion side to slip out of the receptacle terminal on the receiving side little by little. In this case, a gap can be visually observed at the contact portion between the outlet side of the plug-in side and the outlet side of the receiving side, thereby reporting that the outlet is abnormal.

Further, as the terminal temperature rises, the contact surface of the outlet further increases the interval,
When the temperature reaches an arbitrary temperature stored in the shape memory alloy, the outlet terminal on the plug-in side is disconnected from the outlet terminal on the receiving side, automatically shutting off electricity, and finally connected to the outlet on the plug-in side. The load on the connecting wire is also helped, and the outlet on the plug-in side falls off from the outlet on the receiving side, so that a complete and completely safe connection can be obtained.

Since the flow of electricity is completely shut off as described above, abnormalities in the flow of electricity due to an earthquake or the like, abnormal current due to octopus wiring, etc., Therefore, even if both outlets have a problem, there is an effect that a fire or the like can be prevented beforehand.

[0018]

[Brief description of the drawings]

FIG. 1

FIG. 3 is a front view of the outlet main body on the insertion side, separated from the joint of A and A ′.

FIG. 2

FIG. 3 is a front view of the lid side of the plug-in main body separated from the seam of A and A ′.

FIG. 3 is a three-dimensional perspective view of the plug-in outlet in which a plug-side outlet main body and a plug of the plug-side outlet main body are fitted and stopped.

[0019]

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1 'Wiring entrance 2 Shape memory alloy 3 3' Wall 4 4 'Alignment stop hole 5 5' Space 6 6 'Terminal 7 7' Screw hole 8 8 'Alignment stop hole 9 Mandrel 9' Cavity part 10 Mandrel moving position 11 Terminal tip 12 12 'wall 13 13' alignment stop hole 14 14 'space 15 15' alignment stop hole

Claims (4)

[Claims] 1. A plug-in outlet having a pair of plug-in terminals provided on a plug-side outlet main body and a lid integrated with the plug-in outlet main body. In the provided cavity,
A helical shape memory alloy for detecting temperature is provided in a state in which an arbitrary transformation temperature is stored, and a mandrel having an arbitrary length and shape is provided at the center of the shape memory alloy outside the center of the outlet. When a pair of outlets of the plug-in side of the structure is connected to the terminals of the outlet on the receiving side and is energized, the inside of the plug-in side or the receptacle is If the connection terminal inside the outlet on the side has an overcurrent phenomenon or a contact failure due to any cause, a phenomenon occurs in which each terminal starts to generate heat, and when the heat generation phenomenon occurs, the terminal temperature is reduced to a shape memory alloy. In addition to the mechanism for detecting the temperature, the force generated by the shape memory alloy generated by temperature detection is transmitted to the mandrel. At the same time, since the mandrel abuts on the surface of the outlet on the receiving side, a pair of outlet terminals on the plugging side starts to come off from the outlet terminal on the receiving side, and at the same time, a gap is formed in the mating surface between the outlet on the plugging side and the outlet on the receiving side. In addition to the fact that the gap state informs the abnormal connection of the outlet, the power of the shape memory alloy is also increased as the outlet terminal temperature of the plug-in side rises. When the stored arbitrary temperature is reached, the contact part between the outlet terminal on the insertion side and the outlet terminal on the receiving side is cut off, the current is cut off, and there is a function to prevent heat generation at both outlet terminals. An outlet characterized in that the outlet terminal is completely separated from the outlet terminal on the receiving side. 2. A shape memory alloy and a center portion of a shape memory alloy are provided in a center of the plug-in side outlet where the plug-in side outlet main body is provided with a pair of plug-in terminals on the plug-in side outlet main body and the lid. A wall having a hollow shape also serving as insulation is provided on the outer periphery of the shape memory alloy so that a pair of terminals of the outlet main body on the insertion side are not touched with each other while a mandrel is provided on the outer periphery of the shape memory alloy. The outlet according to claim 1, 3. A mandrel having an arbitrary length and shape from the inner diameter side of a shape memory alloy provided in a hollow portion provided in a center portion between a plug-side outlet main body and a lid side. 3. The outlet according to claim 1, wherein the outlet is configured to enter and exit from the part. 4. An outer wall of a hollow portion provided with a shape memory alloy, a mandrel having an arbitrary length and shape, and having insulation at a center portion between the outlet main body on the plug side and the lid side. A space portion having an arbitrary size is provided on both walls of the central portion, which is a joint, so as to easily transmit heat generated by the pair of terminals to the shape memory alloy. An outlet according to claim 2 or claim 3.