KR102626063B1 - Sylinder switchover type plug safe parating socket - Google Patents

Abstract

In order to simplify the configuration and improve safety during heat generation, the present invention provides a housing portion formed by electrically dividing a pair of mounting spaces through which a power supply insertion hole through which a power supply side connection line is inserted is formed on the lower surface of one side in the longitudinal direction; A terminal body provided on one side of the mounting space and electrically connected to the power connection line, and a plug connection portion extending from the terminal body toward the other side of the mounting space and forming a hollow portion into which a power plug is selectively inserted and electrically connected. A power terminal unit made of an electric current-conducting material and provided in pairs; a connection supporter provided on one side of the mounting space in the longitudinal direction and providing a pressing force so that the power-side connection line is supported in contact with the terminal body; A solenoid is provided in the center with a through hole communicating with the lower part of the hollow part, and has a first electrode exposed at the top and a second electrode in contact with the power terminal part, and is disposed at the bottom of the through hole to selectively supply power to the solenoid. A solenoid device including a plunger that is raised; and provided between the hollow part and the through hole, wherein when the ambient temperature of the housing part rises above a preset safe temperature, the plunger for disengaging the power plug upward from the hollow part is raised as the temperature rises. A cylindrical power transfer type plug safety disconnect outlet is provided including a vertically-elevating temperature sensing cut-off unit that selectively energizes the first electrode by vertically-elevating thermal expansion and deformation.

Description

Cylinder switchover type plug safe paring socket}

The present invention relates to a cylindrical power-switching type plug-separable receptacle, and more specifically, to a cylindrical power-switching-type plug-separable receptacle with a simplified configuration and improved stability when generating heat.

Generally, an outlet is equipped to insert a power plug provided at the end of a cord of various electrical appliances. These outlets are connected to indoor electrical wiring and are installed on walls or floors. Accordingly, when the power plug is connected to the outlet, power is supplied to the electric appliance through a cord.

Here, the outlet is provided with a ground terminal on one side connected to an external ground plane, and the power plug is provided with a ground terminal connected to the ground terminal. Through this, when the ground portion of the power plug is interconnected to the ground terminal portion of the outlet, even if an abnormal current occurs in the indoor wiring, damage and malfunction of the electrical appliance to which the outlet is connected can be prevented by being grounded through the ground terminal portion.

Additionally, the outlet is provided with a latching bar that is electrically connected to the ground terminal portion, and a pair of ground lines is electrically connected to the ground terminal portion as it contacts the latching bar. At this time, each of the ground lines is clamped and fixed between the head portion of the extension screw member and the locking bar as the extension screw member penetrating the locking bar is screwed with the end portion of the ground line peeled off.

However, conventional outlets do not have a separate device to detect and automatically block the flow of current even if high heat is generated inside the outlet case due to an internal defect or an external fire, which can lead to secondary safety accidents. There was a serious problem.

Korean Patent No. 10-1862667

In order to solve the above problems, the present invention aims to provide a cylindrical power transfer type plug safety separation outlet with a simplified configuration and improved safety when generating heat.

In order to solve the above problem, the present invention includes a housing portion formed by electrically dividing a pair of mounting spaces formed through a power insertion hole through which a power supply side connection line is inserted on a lower surface of one side in the longitudinal direction; A terminal body provided on one side of the mounting space and electrically connected to the power connection line, and a plug connection portion extending from the terminal body toward the other side of the mounting space and forming a hollow portion into which a power plug is selectively inserted and electrically connected. A power terminal unit made of an electric current-conducting material and provided in pairs; a connection supporter provided on one side of the mounting space in the longitudinal direction and providing a pressing force so that the power-side connection line is supported in contact with the terminal body; and a solenoid having a through hole communicating with the lower portion of the hollow portion in the central portion and having a first electrode and a second electrode in contact with the power terminal portion exposed at the upper portion, which is disposed below the through hole to selectively supply power to the solenoid. A solenoid device including a plunger raised to; and provided between the hollow part and the through hole, wherein when the ambient temperature of the housing part rises above a preset safe temperature, the plunger for disengaging the power plug upward from the hollow part is raised as the temperature rises. A cylindrical power transfer type plug safety disconnect outlet is provided including a vertically-elevating temperature sensing cut-off unit that selectively energizes the first electrode by vertically-elevating thermal expansion and deformation.

Through the above solutions, the present invention provides the following effects.

First, when the surrounding temperature of the housing part rises above the preset safe temperature, the connection support part and the solenoid device are energized through the bimetal that thermally expands and deforms, and the plunger is sucked upward through the magnetic force generated in the solenoid device and strikes the power plug upward. Accordingly, the power plug and the power terminal are separated and electrically blocked, thereby automatically blocking the current flow in the event of a fire, thereby preventing secondary safety accidents.

Second, since the vertically-elevating temperature sensing cut-off part is made of bimetal that maintains thermal expansion and deformation above a preset temperature, the upward suction state of the plunger is maintained through the magnetomotive force of the solenoid until it is cooled to the preset safe temperature range, thereby disconnecting the power plug and power supply. Because the terminals are spaced apart, electrical connections are fundamentally blocked, and safety of use can be significantly improved.

Third, since the vertically-elevated temperature sensing cut-off unit and the solenoid device are mounted inside the cut-off case to form a single assembly, the mold of the housing part is simplified, reducing the defect rate, making assembly easy and driving reliability improved through accurate coupling between parts. In addition, maintainability can be significantly improved because only the vertically-elevated temperature sensing cutoff unit and the solenoid device can be separated and replaced or repaired and then reassembled.

Figure 1 is a perspective view of a cylindrical power transfer type plug safety disconnect outlet according to an embodiment of the present invention.
Figure 2 is a top view showing the coupled state of a cylindrical power transfer type plug safety disconnect outlet according to an embodiment of the present invention.
Figure 3 is an exploded perspective view of a cylindrical power transfer type plug safety disconnect outlet according to an embodiment of the present invention.
Figure 4 is a cross-sectional example showing the coupling structure of the power supply side connection line according to an embodiment of the present invention.
Figure 5 is an exploded perspective view of a vertically-elevated temperature sensing cut-off unit and a solenoid device according to an embodiment of the present invention.
Figures 6 and 7 are illustrations showing the use state of a cylindrical power transfer type plug safety disconnect outlet according to an embodiment of the present invention.
Figure 8 is an example of assembly and disassembly of a cylindrical connector according to an embodiment of the present invention.
Figures 9a and 9b are exemplary diagrams showing the operating state of the vertically-elevated temperature sensing cut-off unit according to an embodiment of the present invention.

Hereinafter, a cylindrical power transfer type plug safety disconnect outlet according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a perspective view of a cylindrical power transfer type plug safety disconnect outlet according to an embodiment of the present invention, and Figure 2 is a top view showing a combined state of a cylindrical power transfer type plug safety disconnect outlet according to an embodiment of the present invention. .

And, Figure 3 is an exploded perspective view of a cylindrical power transfer type plug safety disconnect outlet according to an embodiment of the present invention, and Figure 4 is a cross-sectional example showing the coupling structure of the power side connection line according to an embodiment of the present invention.

Next, Figure 5 is an exploded perspective view of a vertically-elevated temperature sensing cut-off unit and a solenoid device according to an embodiment of the present invention, and Figures 6 and 7 are a cylindrical power transfer type plug safety disconnect outlet according to an embodiment of the present invention. This is an example diagram showing the state of use. In addition, Figure 8 is an example of assembly and disassembly of a cylindrical connector according to an embodiment of the present invention.

And, Figure 9 is an exemplary diagram showing the operating state of a cylindrical power transfer type plug safety disconnect outlet according to an embodiment of the present invention. At this time, Figure 9a shows the operating state of the cylindrical power transfer type plug safe separation outlet 200 of the present invention when the surrounding temperature is below the safe temperature, and Figure 9b shows the surrounding temperature of the cylindrical power transfer type plug safety separation outlet 200. It is desirable to understand it as an operating state when the temperature is above the safe temperature.

Next, Figures 2 to 7 show a state in which the cover part 50 of the cylindrical power transfer type plug safety disconnect outlet 200 of the present invention is separated and the interior of the housing part 110 is exposed, and the grounding member 60 ) and the ground stopper 70 are preferably understood to be omitted.

Also, it is preferable to understand that Figure 9 is shown with the blocking case 181, blocking cover 141, and covering portion 191, which will be described later, omitted. Next, it is preferable that the cylindrical power transfer type plug safety disconnect outlet 200 and the outlet 200, which will be described below, are understood to have the same meaning.

As shown in Figures 1 to 9b, the cylindrical power transfer type plug safety disconnect outlet 200 according to an embodiment of the present invention includes a housing part 110, a power terminal part 130, a connection support part 120, and a solenoid device. (180), and includes a vertically-elevated temperature sensing cut-off unit (140).

Referring to Figures 1 to 4, the housing portion 110 is preferably formed by having a pair of mounting spaces 112 electrically separated from each other with a partition wall 116 in between. In addition, it is preferable that a power insertion hole 111 through which the power supply side connection line 1a is inserted is formed through a lower surface of one longitudinal side of each of the mounting spaces 112.

In detail, the housing portion 110 is preferably provided in a box shape with an upper side open and at least one pair of mounting spaces 112 formed therein. At this time, in this embodiment, as an example, the mounting space 112 is divided on both sides through the partition wall 116 provided along the longitudinal direction in the center of the width direction of the housing portion 110 to form two locations. Although explained and illustrated, it is not limited thereto. In addition, the housing portion 110 is preferably made of an electrically insulating material such as synthetic resin, which can prevent short circuits between components fastened to each other and leakage of internal electricity.

In addition, as the mounting space 112 is divided into at least two or more parts through the partition wall 116, the component parts can be partitioned and arranged to be spaced apart from each other within each mounting space 112, and the power supply side Even if a plurality of connection lines 1a are provided, mutual short circuits can be prevented. Here, the power insertion hole 111 is preferably formed on one side of each mounting space 112 in the longitudinal direction, and the power insertion hole 111 is preferably formed left and right symmetrically around the partition wall 116. do.

At this time, it is preferable that the upper side of each power insertion hole 111 communicates with one of the mounting spaces 112 and the lower side communicates with the outside so that the power supply side connection line 1a is inserted. In addition, a seating portion on which the grounding member 60 is seated in surface contact may be formed on the upper surface of the partition wall 116, and the grounding member 60 is the grounding member 60 disposed on the lower surface of the housing portion 110. It can be electrically connected to the holding bar 70 through an energizing screw or the like.

At this time, the configuration of the grounding member 60 and the grounding stopper 70 is disclosed in prior art outlets such as the applicant's registered patents Nos. 10-2058411, 10-1862667, and 10-1881107. , Anyone with general knowledge in the relevant field can easily perform the procedure, so further detailed explanations will be omitted.

Next, the connection support part 120, which will be described later, is received and fixed on one side of the mounting space 112, and the solenoid device 180, which will be described later, is inserted and fixed on the other side of the connection support part 120. ) is preferably formed.

Meanwhile, the cover part 50 is preferably coupled to cover the upper side of the housing part 110. A coupling fixing groove 53 into which the power plugs P1 and P2 are inserted is recessed in the upper surface of the cover part 50. In addition, the coupling fixing groove 53 may be formed with an inner contour that corresponds to or is smaller than the outer contour of the body (PA) of the power plug, and at least both sides that are symmetrical are formed with the outer surface of the body (PA) of the power plug. By partially fitting together, movement or random separation of the power plugs (P1, P2) can be prevented.

In addition, it is preferable that a power terminal hole 51 is formed on the bottom of the coupling fixing groove 53 so that the power plugs P1 and P2 can be inserted into electrical contact with the plug connection part 132, which will be described later. . In addition, a pair of ground terminal holes 52 through which the upper end of the ground member 60 penetrates may be formed on the bottom surface of the coupling fixing groove 53 and spaced apart from the power terminal hole 51. The power terminal hole 51 is preferably aligned at a position corresponding to the upper and lower sides of the hollow portion 134, which will be described later.

Here, the power terminal units 130 are arranged along the longitudinal direction of each mounting space 112, and are preferably provided symmetrically in pairs. The power terminal portion 130 is made of a conductive material such as conductive metal such as brass, and preferably includes a terminal body 131 and the plug connection portion 132. At this time, the terminal body 131 is provided on one side of the mounting space 112 and is electrically connected to the power supply side connection line 1a, and includes a terminal upper surface portion 131a and a terminal contact surface portion 131b. desirable.

In addition, the terminal upper surface portion 131a is provided in a flat shape facing the bottom surface of one side of the mounting space 112 to cover the upper part of one side of the mounting space 112, and the terminal contact surface portion 131b is It is preferable that the terminal top surface portion 131a extends and is bent downward from one end.

At this time, the terminal contact surface portion 131b is preferably extended to correspond to the outer inner surface in the width direction of each mounting space 112 where the power insertion hole 111 is formed. Accordingly, when the power connection line 1a is inserted into the power insertion hole 111, its end contacts the terminal contact surface portion 131b and is electrically connected.

In addition, the plug connection portion 132 extends integrally from the terminal body 131 toward the other side in the longitudinal direction of the mounting space 112, and the power plugs P1 and P2 are selectively inserted and electrically connected. It is preferable that a hollow portion 134 is formed in the plug connection portion 132. That is, when the power plugs (P1, P2) are inserted into the hollow portion 134 and electrically connected to the plug connection portion 132, the power plugs (P1, P2) are connected to the plug connection portion 132 and the terminal. It can be electrically connected to the power supply connection line 1a via the body 131 and receive electricity.

At this time, the mounting opening 114 is formed through the other side of the mounting space 112 corresponding to the lower side of the hollow portion 134 of one of the pair of power terminal portions 130, and the mounting opening 114 It is preferable that the solenoid device 180 is coupled to.

Meanwhile, referring to FIGS. 3 and 4, the connection supports 120 are provided in at least one pair, and are preferably provided on one side of each mounting space 112 where the power insertion hole 111 is formed. The connection support part 120 preferably includes an elastic piece 127 and a puller 128.

In detail, the elastic piece 127 is preferably provided corresponding to each of the power insertion holes 111, and is located on both sides corresponding to the front-back direction of the housing portion 110 within one side of each mounting space 112. It is preferable that they are spaced apart and provided in pairs. Also, when the power connection line 1a is introduced into the mounting space 112 through the power insertion hole 111, it is pressed toward the terminal contact surface 131b through the elastic piece 127.

Furthermore, referring to FIG. 4, the elastic piece 127 is bent multiple times so that the power supply side connection line 1a and the terminal contact surface portion 131b can be stably pressed and contacted. At this time, it is preferable that the distal end of the elastic piece 127 in contact with the power connection line 1a is bent upwardly in accordance with the insertion direction of the power connection line 1a. Therefore, even if the power connection line 1a is pulled outward, it can be prevented from being unnecessarily separated from the outlet 200 by being engaged with the distal end of the elastic piece 127.

At this time, this elastic piece 127 may be formed of a metal material with a certain elasticity and may be manufactured using a stainless steel thin plate or the like. Through this, the power side connection line 1a is provided with a pressing force so that it comes into contact with the terminal contact surface portion 131b and is electrically connected, and can be elastically deformed by the pressing force applied when pressing the puller 128, which will be described later. You can.

In addition, the puller 128 is inserted through the puller insertion hole 111a formed between the pair of power insertion holes 111, and the power supply side connection line 1a is formed by the elasticity of the elastic piece 127. The elastic piece 127 is pressed so that its restraint state is selectively released.

That is, when the puller 128 is pressed toward the upper side of the mounting space 112 in order to separate the power connection line 1a from the outlet 200, the elastic piece ( The distal end of 127) is elastically deformed to one side of the mounting space 112. Through this, the distal end of the elastic piece 127 can be separated from the power supply side connection line 1a and the restraint state can be released.

At this time, when the external force pressing the puller 128 upward is released, the puller 128 is pressed downward by the elastic restoring force of the elastic piece 127, and the puller 128 automatically returns to the initial position. It can be. Accordingly, the distal end of the elastic piece 127 is adjacent to and contacts the power connection line 1a and is engaged and fixed, and the terminal contact surface portion 131b and the power connection line 1a can be stably contacted. And, when the power connection line 1a is in contact with the terminal contact surface 131b, it is electrically connected to the power terminal 130 and the power plugs P1 and P2 that selectively contact the power terminal 130. can be connected

Meanwhile, referring to FIG. 5, the solenoid device 180 is provided to be coupled to the mounting opening 114, and preferably includes a blocking case 181, a plunger 187, and a solenoid 189.

In detail, a storage space is formed inside the blocking case 181, and the plunger 187 is stored in the storage space. The storage space is provided with an elastic means 182 that elastically supports the plunger 187 downward, and the elastic means 182 preferably has a radius outside the lower end of the solenoid 189 and the plunger 187, which will be described later. It is preferable that it is interposed between the stopping ends 187a extending in the direction.

At this time, the elastic restoring force of the elastic means 182 may be formed with a force smaller than the magnetomotive force of the solenoid 189. Therefore, when the outlet 200 is turned off, which will be described later, the plunger 187 can be easily attracted to the solenoid 189, and when the magnetomotive force is removed, the plunger 187 is connected to the elastic means 182. It can be easily returned downward through its elastic resilience.

In addition, the blocking case 181, like the housing portion 110, is preferably made of an electrically insulating material such as synthetic resin. In addition, the mounting opening 114 is formed through a cross-sectional area of the solenoid device 180.

Subsequently, the plunger 187 extends in the vertical direction below the hollow portion 134 and is provided to be lifted up and down in the storage space. At this time, it is elastically supported downward through the elastic means 182. In addition, the plunger 187 is preferably aligned so that the through hole 189c of the solenoid 189 is concentric with the hollow portion 134.

Next, the solenoid 189 is fixed to the upper end of the blocking case 181 and is provided to surround the upper outer periphery of the plunger 187. A first electrode (189a) and a second electrode (189b) are spaced apart from each other and protrude above the solenoid (189). At this time, the second electrode 189b is provided to contact the power terminal portion 130 disposed in the mounting space 112 to which the solenoid device 180 is coupled, and the first electrode 189a is described later. It is provided to contact the cylindrical connector part 190 of the vertically lifting type temperature sensing blocking part 140.

Next, the vertically-elevated temperature sensing blocking unit 140 is provided between the hollow part 134 and the through hole 189c, and includes the blocking cover 141, the cylindrical connector unit 190, It is desirable to include a connector connection portion 195 and a bimetal 145.

In detail, the blocking cover 141 covers the upper part of the solenoid device 180, and a through hole 142 communicating with the through hole 189c is formed in the center, and the through hole 189c and the through hole 142 are formed. ) is arranged concentrically so that the plunger 187 can be lifted up and down through the storage space to the hollow part 134, and is preferably formed in a circular shape of a preset size.

In addition, the blocking cover 141 has the through hole 142 protruding upward, and the cylindrical connector portion 190 is formed between the outer edge of the through hole 142 and the side wall protruding on the upper outer side of the blocking cover 141. ) is preferably provided with an accommodating space with an open upper portion.

Subsequently, it is preferable that a cylindrical connector connection groove 143a is formed on one upper side of the blocking cover 141 through which the first electrode 189a protruding through and the cylindrical connector portion are connected. In addition, it is preferable that a second electrode ground hole 143b through which the second electrode 189b protrudes and comes into contact is formed on the other spaced upper side of the blocking cover 141. Also, the blocking cover 141, like the housing portion 110, is preferably made of an electrically insulating material such as synthetic resin.

Meanwhile, the solenoid device 180 and the vertically-elevating temperature sensing block 140 are connected to the mounting opening 114 formed through the other side of the mounting space 112 corresponding to the lower part of the hollow portion 134. can be combined In addition, at least one of the blocking case 181 included in the solenoid device 180 and the blocking cover 141 included in the vertically lifting type temperature sensing blocking unit 140 has the mounting opening 114. It is preferable that the coupling protrusion 149 protrudes so as to be coupled to the edge through a coupling means.

Then, as shown in Figures 5 and 8 The cylindrical connector part 190 is preferably provided with a covering part 191, a wire part 192, and a bimetal connection groove 193.

In detail , the cylindrical connector portion 190 is preferably connected to a bimetal 145, which will be described later, at the front end, and is connected to the connector connection portion 195 at the rear end. At this time, the coating portion 191 is a coating portion made of an insulating material and wraps the wire portion 192, which is made of a conductive material such as brass. Additionally, the covering portion 191 is preferably formed of an electrically insulating material. In addition, it is preferable that a portion of the wire portion 192 is exposed to the outside of the coating portion 191.

In addition, the cylindrical connector portion 190 is preferably formed by connecting the other end of the bimetal 145 to the bimetal connection groove 193. Through this, when thermal expansion deformation of the bimetal 145, which will be described later, occurs, rotation of the connected cylindrical connector portion 190 can occur.

In detail, referring to FIG. 9, when the rotation operation occurs, the wire portion 192 of the cylindrical connector portion 190 may be disposed to face the first electrode 189a on the lower surface so as to selectively conduct electricity. Additionally, the wire portion 192 is connected to the connector connection portion 195 so that electrical conduction may occur.

At this time, the connector connection portion 195 is preferably provided with a first connector 196 and a second connector 197. In addition, the first connector 196 is made of a conductive material, and the second connector 197, which is connected to the power terminal 130 on the other side and connected to the first connector 196, is also made of a conductive metal such as brass. It is desirable to have it made of material. Through this, when the rotational motion of the cylindrical connector part 190 occurs, the solenoid 189, the first electrode 189a, the wire part 192, the first connector 196, and the second Electrical conduction may occur between the connector 197 and the power terminal unit 130 on the other side.

At this time, the second connector 197 connected to the first connector 196 is preferably in contact with at least one of the pair of power terminals 30 (hereinafter referred to as the other power terminal 130). In detail, when the first connector 196 selectively contacts one power terminal of the pair of power terminals, the second connector 197 contacts the other power terminal 30.

At this time, an auxiliary connection line 198 may be further provided to electrically connect the second connector 197 and the first connector 196. That is, the second connector 197 and the first connector 196 may be connected through the auxiliary connection line 198.

Therefore, the first connector 196 of the connector connection portion 195 is electrically connected to the first electrode 189a by rotation of the cylindrical connector portion 190.

In detail, the second connector 197 is provided to contact the other power terminal, and the second electrode 189b of the solenoid 189 is provided to contact the one power terminal. In addition, the first connector 196 is preferably connected to the cylindrical connector portion 190 and selectively connected to the first electrode 189a through the rotation operation.

Meanwhile, the above-described parts included in the vertically-elevating temperature sensing blocking unit 140 can be separated and reassembled. Therefore, through this structure, ease of assembly and reliability of assembly between parts assembled inside the vertically-elevating temperature sensing blocking unit 140 can be improved.

Subsequently, the bimetal 145 is such that when the ambient temperature of the housing part 110 rises above the preset safe temperature, the first electrode 189a on the upper surface of the blocking cover 141 is connected to the wire part 192. It is preferable that the cylindrical connector portion 190 be provided with a feature that rotates the cylindrical connector portion 190 to conduct electricity.

At this time, the ambient temperature of the housing unit 110 is preferably understood as a concept encompassing the air temperature inside the housing unit 110 and the temperature of each component disposed within the housing unit 110. Here, the safe temperature can be set at 70 to 100°C, and most preferably at 80°C.

Next, a side wall portion is protruded at the edge of the blocking cover 141, and a screw groove for fixing one end 145a of the bimetal 145 with a fixing screw is formed at the edge. Through this, one end of the bimetal 145 can be supported in surface contact on the upper part of the blocking cover 141.

In addition, the other end 145b of the bimetal 145 is preferably connected to surround the outer periphery of the front part of the cylindrical connector 190 and is restrained by the bimetal connection groove 193.

In detail, the bimetal 145 has the other end ( 145b) may be thermally expanded and deformed.

At this time, it is preferable that the upper surface of the bimetal 145 be formed with a higher thermal expansion coefficient than the lower surface so that the other end 145b can be thermally expanded and deformed. For example, the bimetal 145 may be provided by having a plate made of copper disposed on the upper surface of the other end portion 145b and a plate made of iron, which has a lower coefficient of thermal expansion than that of copper, disposed on the lower surface and bonded to each other. Of course, the above material can be replaced with another material as long as the magnitude relationship of the thermal expansion coefficient is satisfied.

Meanwhile, when the surrounding temperature of the housing portion 110 is below the safe temperature, the bimetal 145 is maintained in its form before thermal expansion. Therefore, the first connector 196 does not conduct electricity to the first electrode 189a and power is not applied to the solenoid 189.

At this time, the plunger 187 is elastically supported downward through the elastic means 182 interposed between the solenoid 189 and the stopping end 187a, so that the power plugs P1 and P2 are connected to the hollow portion ( 134) It is drawn inside and comes into contact with the power terminal portion 130. Through this, current flows through the power connection line 1a, the power terminal 130, and the power plugs P1 and P2.

Also, when the surrounding temperature of the housing portion 110 rises above the safe temperature, the other end portion 145b of the bimetal 145 thermally expands outward. That is, as the bimetal 145 thermally expands and deforms outward, the cylindrical connector portion 190 fixed to the blocking cover 141 rotates. In addition, the wire portion 192 may be in contact with the first electrode 189a to conduct electricity.

In detail, when the wire portion 192 is energized with the first electrode 189a, the one side power terminal portion 130, the second electrode 189b, the first electrode 189a, the wire portion 192, As current flows through the first connector 196, the second connector 197, and the other power terminal 30, power is applied to the solenoid device 180.

At this time, when power is applied to the solenoid device 180, magnetomotive force is generated and the plunger 187 is drawn into the solenoid 189 and rapidly moves upward. Accordingly, the upper end of the plunger 187 is drawn upward into the hollow part 134 and the power plugs P1 and P2 in contact with the hollow part 134 are pushed upward with strong force. Through this, the power plugs (P1, P2) are separated from the hollow portion 134, so the current can be automatically blocked.

That is, the present invention operates the solenoid device 180 through thermal expansion and deformation of the vertically-elevating temperature sensing cut-off portion 140, and the power plugs P1 and P2 are separated from the hollow portion 134. It operates to cut off the current as the electrical connection is released. At this time, when the plunger 187 moves upward, the elastic means 182 is compressed.

Here, when the power plugs (P1, P2) are separated from the hollow portion 134 through the operation of the solenoid device 180, the body portion (PA) of the power plug moves to the outside of the coupling fixing groove portion 53. It protrudes.

Therefore, the user can visually check the body portion (PA) of the power plug protruding to the outside of the outlet 200, immediately determine that the current is blocked, and then proceed with subsequent processing. Since the blocking state can be maintained, safety can be significantly improved. In addition, when the surrounding temperature of the housing portion 110 is maintained above the safe temperature, the bimetal 145 of the vertically lifting type temperature sensing blocking portion 140 is maintained in a thermally expanded and deformed state.

Accordingly, since the energized state of the solenoid device 180 and the connection terminal 130 is maintained, the plunger 187 can be maintained in a state in which it is attracted by the magnetomotive force of the solenoid 189. Through this, even if the power plugs (P1, P2) are inserted into the hollow portion 134 due to the suction rise of the plunger 187, they can be removed again.

At this time, when the surrounding temperature of the housing part 110 falls again below the safe temperature, the bimetal 145 is restored to its form before thermal expansion and deformation, and the cylindrical connector part 190 rotates back to its previous state.

Accordingly, the first electrode 189a leaves the wire portion 192 and is connected to the covering portion 191 made of an insulating material and is connected through the first connector 196 and the second connector 197. Current flow between the pair of power terminal units 130 is blocked. Accordingly, the magnetomotive force of the solenoid 189 is lost.

And, the plunger 187 is elastically supported downward through the elastic restoring force of the elastic means 182. Through this, when the power plugs (P1, P2) are reinserted into the hollow portion 134, the plug connection portion 132 and the power plugs (P1, P2) come into electrical contact again, causing current to flow.

Of course, when the surrounding temperature of the housing portion 110 is maintained above the safe temperature, the plug connection portion 132 and the power plugs (P1, P2) have a current flow due to the restart of the solenoid device 180. You may be blocked.

That is, when the ambient temperature of the housing unit 110 rises above the safe temperature, the vertically-elevating temperature sensing blocking unit 140 connects the power plugs (P1, P2) through thermal expansion deformation of the bimetal 145. It is preferable to understand it as a device that is operated to separate from the hollow portion 134 and block the flow of current.

In other words, it is desirable to understand that the function is not to block the current flow when a simple overcurrent occurs, but to block the current flow according to the increase in the ambient temperature of the housing portion 110.

Therefore, secondary safety accidents can be prevented by stably blocking the current flow of the product even when the ambient temperature of the housing part 110 increases due to external factors such as fire as well as heat generation due to the combination of parts.

Meanwhile, it is preferable that a communication portion 116a in which the auxiliary connection line 198 connecting the first connector 196 and the second connector 197 is received is formed recessed in the partition wall 116. Accordingly, the auxiliary connection line 198 is prevented from interfering with the grounding member 60, and thus operational reliability can be further improved.

At this time, terms such as “include,” “comprise,” “equip,” or “have,” as used above, mean that the corresponding component may be present, unless specifically stated to the contrary. Rather than excluding a component, it should be interpreted as allowing additional inclusion of other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the contextual meaning of the related technology, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in the present invention.

As explained above, the present invention is not limited to the above-described embodiments, and modifications and implementations can be made by those skilled in the art without departing from the scope of the claims of the present invention. And these modifications fall within the scope of the present invention.

1a: Power side connection line 110: Housing portion
112: Mounting space 114: Mounting opening
130: power terminal part 134: hollow part
140: Vertical lifting type temperature sensing block 180: Solenoid device
187: Plunger 189: Solenoid
189a: First electrode P1, P2: Power plug
200: Cylindrical power transfer type plug safety separation outlet

Claims (5)

A housing portion formed by electrically dividing a pair of mounting spaces formed through a power insertion hole into which a power supply connection line is inserted on a lower surface of one longitudinal side of the body;
A terminal body provided on one side of the mounting space and electrically connected to the power connection line, and a plug connection portion extending from the terminal body toward the other side of the mounting space and forming a hollow portion into which a power plug is selectively inserted and electrically connected. A power terminal unit made of an electric current-conducting material and provided in pairs;
a connection supporter provided on one side of the mounting space in the longitudinal direction and providing a pressing force so that the power-side connection line is supported in contact with the terminal body;
A solenoid is provided in the center with a through hole communicating with the lower part of the hollow part, and has a first electrode exposed at the top and a second electrode in contact with the power terminal part, and is disposed at the bottom of the through hole to selectively supply power to the solenoid. A solenoid device including a raised plunger; and
It is provided between the hollow part and the through hole, and when the ambient temperature of the housing part rises above a preset safe temperature, the plunger for separating the power plug upward from the hollow part is vertically raised as the temperature rises. A cylindrical power transfer type plug safety disconnect outlet including a vertically-elevated temperature sensing cut-off unit that selectively energizes the first electrode by elevation-type thermal expansion deformation. According to claim 1,
The vertically-elevated temperature sensing and blocking unit
A blocking cover made of an insulating material that covers the top of the solenoid device and has a through hole in communication with the through hole in the center, through which the first electrode and the second electrode are exposed;
A cylindrical connector portion formed on the lower surface with a portion of the wire portion disposed opposite the first electrode to selectively conduct electricity is exposed and electrically connected to the first connector for power application at the rear end,
A cylindrical power transfer type plug safety disconnect, wherein one end is fixed to one side of the blocking cover and the other end is connected to surround the outer periphery of the front part of the cylindrical connector, and the upper surface includes a bimetal having a higher coefficient of thermal expansion than the lower surface. Power socket. According to claim 2,
The cylindrical connector part
inside The wire portion is made of a conductive material and extends in a straight line,
A cylindrical power transfer type plug safety disconnect outlet comprising a cylindrical insulating material covering portion surrounding the outer periphery of the wire portion so that a portion of the wire portion is exposed. According to claim 2,
One end of the bimetal is fixed to the edge of the blocking cover with a fixing screw, and the other end is formed with a bimetal coupling groove that surrounds and binds the outer circumference of the cylindrical connector part. According to claim 2,
The solenoid device and the vertically-elevating temperature sensing block are provided to be coupled to a mounting opening formed through the other side of the mounting space corresponding to the lower part of the hollow portion,
The solenoid device further includes a blocking case made of an insulating material, which is provided with elastic means for elastically supporting the plunger downward in a storage space formed therein, and to which the solenoid is fixed at the upper end,
The blocking cover covers the upper part of the blocking case, and the first electrode and the second electrode for supplying power to the solenoid device are installed through it.