JP7122530B2 - Outlet temperature sensor mounting structure and its production method - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to an outlet temperature sensor mounting structure and a method for producing the same.

Conventionally, there has been known a configuration in which a temperature sensor is incorporated in an outlet in order to detect temperature rise due to tracking.

In Patent Document 1, a temperature sensor is provided between receiving blades of a power outlet, and when the temperature detected by this temperature sensor is higher than a reference temperature value, a buzzer, lighting, or the like is used to notify the temperature, and a breaker or the like is used to connect the power outlet. It is described that the power supply to the

Japanese Patent Application Laid-Open No. 2004-22172

In the outlet described in Patent Document 1, the temperature sensor is arranged between the receiving blades while being covered with the sealing resin, so there is a problem that the accuracy of temperature detection of the receiving blade by the temperature sensor is not good.

An object of the present disclosure is to provide a temperature sensor attachment structure for an outlet and a method for producing the same, which can accurately measure the temperature of a temperature measurement target in the outlet.

A temperature sensor mounting structure for an outlet according to the present disclosure is a temperature sensor mounting structure for mounting a temperature sensor to a temperature measurement target in an outlet into which a plug is inserted and removed, wherein the temperature sensor is closely attached to the temperature measurement target. and a pressing member that presses the temperature sensor so as to cause the temperature sensor to move.

Further, a method for producing a temperature sensor attachment structure for an outlet according to the present disclosure is a method for producing a temperature sensor attachment structure for attaching a temperature sensor to a temperature measurement object in an outlet into which a plug is inserted and removed, A pressing member is provided which is placed in contact with a temperature measurement target and presses the temperature sensor so as to bring the temperature sensor into close contact with the temperature measurement target.

According to the outlet temperature sensor mounting structure and the production method thereof according to the present disclosure, it is possible to accurately measure the temperature of the temperature measurement target in the outlet.

Fig. 2 is an overall perspective view of an outlet installed together with a cosmetic cover; It is a front view of an outlet. Fig. 3 is an exploded perspective view of the outlet with the outlet main body cover and the outlet outer cover removed; Fig. 2 is a front view of the outlet with the outlet main body cover and the outlet outer cover removed; FIG. 5 is an exploded perspective view showing the outlet shown in FIG. 4 with a case removed; FIG. 6 is a perspective view showing a state in which the body member and the opening/closing unit housing are removed in the outlet shown in FIG. 5; FIG. 4 is a side view of the opening/closing unit in an open state; FIG. 4 is a side view of the opening/closing unit in a closed state; It is a perspective view which shows the terminal part of an outlet in a partially disassembled state. It is a perspective view which shows the temperature sensor mounting structure of an outlet. FIG. 11 is a partially cutaway plan view showing the temperature sensor mounting structure of FIG. 10; FIG. 4 is an exploded perspective view showing a blade receiving spring block and a body member; FIG. 4 is a perspective view showing a state in which one blade receiving spring block is attached to a body member; FIG. 4 is an exploded perspective view showing one blade receiving spring block and a body member; It is a perspective view which expands and shows a part of terminal part. FIG. 11 is an exploded perspective view showing another example of the outlet temperature sensor mounting structure; FIG. 17 is an assembled perspective view of the temperature sensor mounting structure of FIG. 16; 18 is a plan view including a partial cross section showing the temperature sensor mounting structure of FIG. 17; FIG. FIG. 18 is a perspective view (partially including a transparent portion) showing how the clip is pressed by the protrusion of the cover member in the temperature sensor mounting structure of FIG. 17;

Embodiments according to the present disclosure will be described in detail below with reference to the accompanying drawings. In this description, specific shapes, materials, numerical values, directions, etc. are examples for facilitating understanding of the present disclosure, and can be changed as appropriate according to usage, purpose, specifications, and the like. In addition, when a plurality of embodiments and modifications are included below, it is assumed from the beginning that the characteristic parts thereof will be used in combination as appropriate.

FIG. 1 is an overall perspective view of an outlet 10 installed together with a decorative cover. FIG. 2 is a front view of the outlet 10. FIG. 1 and 2 (the same applies to other figures), arrow X indicates the width direction (or left-right direction), arrow Y indicates the front-back direction (or depth direction), and arrow Z indicates the up-down direction (or height direction). is shown. These three directions are orthogonal to each other. It should be noted that these directions are examples and do not substantially define the configuration of the outlet according to the present disclosure.

As shown in FIGS. 1 and 2, the outlet 10 is formed in a rectangular parallelepiped shape that is vertically long when viewed from the front. The size of the receptacle 10 is formed according to the JIS standard. The outlet 10 is installed, for example, in a state of being embedded in a wall or the like.

A decorative cover 2 having a rectangular frame shape is arranged around the front surface of the outlet 10 . The decorative cover 2 is composed of, for example, a resin molded product. The decorative cover 2 is provided around the front surface of the outlet 10, so that the hole formed in the wall of the outlet 10 and the fixture (not shown) for attaching the outlet 10 to the hole are hidden from the outside and look good. It is a member for improving

FIG. 3 is an exploded perspective view of the outlet 10 with the outlet body cover and the outlet outer cover removed. As shown in FIGS. 1 to 3 , the outlet 10 includes an outlet main body cover (cover member) 12 and an outlet outer cover (cover member) 14 . Both the outlet main body cover 12 and the outlet outer cover 14 are made of resin molding.

The outlet body cover 12 is arranged to cover the front surface of the outlet 10 . The outlet body cover 12 includes an upper cover 12a and a lower cover 12b. The upper cover 12a is provided to cover the front of a blade receiving spring block housed in a case described later.

Blade inserting portions 18a and 18b are arranged in two upper and lower stages on the upper cover 12a. Blade insertion openings 20a and 20b into which two plate-shaped blades of an insertion plug (not shown) are inserted are formed side by side in the left-right direction in the upper blade insertion portion 18a. In the lower blade insertion portion 18b, blade insertion openings 20a and 20b into which two blades of an insertion plug are inserted are formed side by side in the left-right direction. A ground terminal insertion opening 20c into which a rod-shaped terminal for grounding is inserted is formed at a lower position between them. In this embodiment, the opening edge of one blade insertion opening 20a is formed in a substantially D-shaped frame shape when viewed from the front, and the opening edge of the other blade insertion opening 20b is formed in a rectangular frame shape. An example is given. However, it is not limited to this, and the opening edges of the blade insertion openings 20a and 20b may be formed in the same shape.

A lower cover 12b forming part of the outlet body cover 12 is provided to cover the terminal portion 100 housed in the case. On the surface of the lower cover 12b, characters such as "earth" and "open" and a mark indicating earthing are attached. The lower cover 12b is detachably attached to the upper cover 12a. Specifically, it is mounted by inserting two mounting pins 13 formed integrally with the lower cover 12b into mounting holes 15 formed in the upper cover 12a. By removing the lower cover 12b from the outlet 10, the grounding terminal portion of the terminal portion 100 is exposed. As a result, the outlet 10 becomes ready for connection with an external grounding wire.

The outlet outer cover 14 is formed in a U-shape when viewed from the front, and is arranged adjacent to the upper, left, and lower sides of the outlet main body cover 12 . The outlet outer cover 14 is provided to cover the front surface of an opening/closing unit 70 which will be described later. The outlet outer cover 14 is formed with an elongated rectangular opening 14a and a circular through hole 14b located above the opening 14a. An operation lever 71 of the opening/closing unit 70 is arranged in the opening 14a in an exposed state. A push switch mounted on a substrate, which will be described later, is arranged inside (that is, behind) the through hole 14b. As a result, the push switch can be pushed down by inserting, for example, a thin stick-shaped tool or the tip of a pen into the through hole 14b. In addition, the push switch has a light-emitting portion, and the through hole 14b also functions as a translucent window for confirming the lighting state of the light-emitting portion from the outside.

Above the through-hole 14b in the outlet outer cover 14, "power supply" and "abnormality" are indicated. The area above the display "power supply" is a power lamp portion 14c that lights, for example, in green when power is supplied from the outlet 10, and the area above the display "abnormal" lights or flashes, for example, in red when the outlet 10 is abnormally heated. It is an abnormal light portion 14d. Although the power lamp portion 14c and the abnormal lamp portion 14d are translucent portions through which light passes through the wall surface of the outlet outer cover 14, they may be formed as translucent windows each having a through hole.

FIG. 4 is a front view of the outlet 10 with the outlet body cover 12 and the outlet outer cover 14 removed. FIG. 5 is an exploded perspective view showing the outlet 10 shown in FIG. 4 with the case 16 removed.

The outlet 10 has a case 16 . The case 16 is configured by, for example, a resin molded product. As shown in FIGS. 3 and 4, the case 16 has a rectangular parallelepiped outer shape with a bottom surface at the rear and an open front.

As shown in FIGS. 3 and 4, an engaging portion 22 is protruded from the outer surface of the case 16 along the long side direction. Two engaging portions 22 are provided on each side surface at intervals. The cover member 17 is attached to the case 16 by engaging the hook portions 17a (see FIG. 19) of the cover member 17 attached to the front portion of the case 16 with these engaging portions 22, and the cover member 17 is attached to the outlet. A body cover 12 is attached.

As shown in FIG. 5, two pillars 26 are erected on the bottom surface 24 of the case 16 with a gap therebetween in the vertical direction Z. As shown in FIG. A space 28 for accommodating the opening/closing unit 70 is defined between the pillars 26 and the case inner surface 25a on one side in the width direction X. As shown in FIG. A space 30 for accommodating the blade receiving spring unit 40, the substrate 120 and the like is defined between the column portion 26 and the case inner surface 25b on the other side.

In addition, a partition wall portion 27 having an L shape in a front view viewed from the front protrudes from a lower portion of the bottom surface 24 of the case 16 . The partition wall portion 27 defines a space 32 in which the terminal portion 100 is accommodated within the case 16 .

A plurality of support protrusions 29 are formed on the bottom surface 24 of the case 16 so as to protrude therefrom. A substrate 120 housed in the case 16 is supported by the tip surfaces of these support projections 29 .

6 is a perspective view showing a state in which the body member and the opening/closing unit housing are removed in the outlet shown in FIG. 5. FIG. As shown in FIGS. 4 to 6, the outlet 10 includes a blade receiving spring unit 40, an opening/closing unit 70, and a substrate 120. As shown in FIGS. The outlet 10 may also include a grounding terminal portion 102 .

The blade receiving spring unit 40 includes two blade receiving spring blocks 42a and 42b, a body member 44 supporting these blade receiving spring blocks 42a and 42b, and the blade receiving spring blocks 42a and 42b pressed against the body member 44. and a fixing member 46 for fixing in a state. The body member 44 and the fixing member 46 are preferably made of insulating resin molded products. The blade receiving spring blocks 42a and 42b may be clamped and held or fixed by a pair of claw portions (not shown) provided on the body member 44. As shown in FIG.

One of the blade receiving spring blocks 42 a is a terminal member electrically connected to an external power supply line of voltage phase (hereinafter referred to as L phase) connected to the terminal portion 100 of the outlet 10 . The other blade receiving spring block 42 b is a terminal member that is electrically connected to a neutral-phase (hereinafter referred to as N-phase) external power supply line that is connected to the terminal portion 100 of the outlet 10 . The blade receiving spring blocks 42a and 42b are manufactured, for example, by punching and bending a metal plate such as a copper plate.

The blade receiving spring blocks 42a and 42b may have the same shape. Therefore, the configuration of one blade receiving spring block 42a will be mainly described below, and the description of the other blade receiving spring block 42b will be omitted as appropriate.

The blade receiving spring block 42a includes two pairs of blade receiving springs 48, a connecting portion 50 that mechanically and electrically connects the blade receiving springs 48, and along the front-rear direction from the edge of the connecting portion 50. It integrally has a connection terminal portion 52 formed by bending.

A pair of blade receiving springs 48 in the L-phase blade receiving spring block 42a are arranged inside a blade insertion opening 20a formed on the upper right side of the upper cover 12a. Another pair of blade receiving springs 48 is arranged inside a blade insertion opening 20a formed on the lower right side of the upper cover 12a (see FIG. 2).

A pair of blade receiving springs 48 in the N-phase blade receiving spring block 42b are arranged inside a blade insertion opening 20b formed on the upper left side of the upper cover 12a. Another pair of blade receiving springs 48 is arranged inside a blade insertion opening 20b formed on the left side of the lower stage of the upper cover 12a (see FIG. 2).

As shown in FIG. 6, one end of an L-phase conducting wire 54a is connected to the connection terminal portion 52 of the L-phase blade receiving spring block 42a by soldering or the like. One end of an N-phase conductor 54b is connected to the connection terminal portion 52 of the N-phase blade receiving spring block 42b by soldering or the like. The L-phase conductor 54a and the N-phase conductor 54b are preferably made of, for example, a braided copper wire coated with insulation. The other ends of the L-phase conductor 54a and the N-phase conductor 54b are connected to the switching unit 70, respectively.

Temperature sensors 54 are attached to the connecting terminal portions 52 of the blade receiving spring blocks 42a and 42b by clips 56 (see FIG. 11). The mounting structure of the temperature sensor 54 will be detailed later. The temperature sensor 54 measures the temperatures of the blade receiving spring blocks 42a and 42b, respectively, and transmits the measurement results to the substrate 120 via the signal lines 60a and 60b.

The board 120 is a circuit board on which pattern wiring (not shown) is formed. The substrate 120 is mounted with a control device such as a microcomputer. Based on the measurement result transmitted from the temperature sensor 54, the control device determines whether or not the temperature of the blade receiving spring blocks 42a, 42b exceeds a predetermined threshold value. Then, when the temperature of at least one of the blade receiving spring blocks 42a and 42b exceeds a predetermined threshold temperature, the control device determines that the outlet 10 is in an overheated state, and activates an opening/closing unit described later via a signal line 60c. Send a signal.

Here, the predetermined threshold temperature can be set to 100.degree. C. to 150.degree. C., for example. The predetermined threshold temperature can be set according to the heat resistance temperature of the resin material forming the outlet body cover 12 and the body member 44 of the outlet 10 . Also, the predetermined threshold temperature may be changed according to the environmental temperature (or ambient temperature) in which the outlet 10 is used. Also, a buzzer device may be mounted on the substrate 120 . When it is determined that the temperature of at least one of the blade receiving spring blocks 42a and 42b exceeds a predetermined threshold temperature and is in an overheated state, the control device blinks the light emitting portion of the push switch 132 and sounds the buzzer device. Then, the notification operation may be performed. Furthermore, as a resin material constituting the cover member such as the outlet main body cover 12 and the body member 44, for example, melamine resin, urea resin, polybutylene terephthalate (PBT), etc. are preferably used.

As shown in FIG. 6, two signal lines 62a and 62b extend from the back surface of the substrate 120. As shown in FIG. Even if a signal indicating the measurement result by the temperature sensor 54 or the operating state (on/off state) of the opening/closing unit 70 is transmitted to a power control device or a distribution board outside the outlet 10 via these signal lines 62a and 62b. good.

In this embodiment, an example in which the board 120 has a function of detecting an overheating state of the outlet 10 as an abnormality will be described, but the present invention is not limited to this. The outlet may have a seismic detection function that cuts off the power supply when an earthquake of a predetermined seismic intensity or more is detected as an abnormality. In this case, the seismic intensity may be configured by a seismic sensor that can detect acceleration, such as a gyro sensor, installed on the board or in another part inside the outlet. The seismic sensor is connected to a control device on the substrate via pattern wiring or signal lines on the substrate. The control device outputs an operation signal to the opening/closing unit 70 when it is determined that the earthquake is equal to or greater than a predetermined seismic intensity based on the input from the seismic sensor. Further, the outlet according to the present disclosure may have such a vibration detection function and the above-described overheating detection function in combination, or may have the vibration detection function alone. Furthermore, the outlet according to the present disclosure may be provided with an earth leakage detection function that cuts off the current when an earth leakage is detected as an abnormality, in combination with the above-described overheating or vibration sensing, or alone. A current sensor may be provided in the outlet to detect electric leakage, and the opening/closing unit may be operated when the current flowing through the blade receiving spring block exceeds a predetermined threshold current value.

Even in an outlet having such a vibration detection function or an electric leakage detection function, it is possible to share the outlet components other than the substrate, thereby improving the productivity of the outlet and suppressing the manufacturing cost.

As shown in FIG. 6 , the outlet 10 has a switch board 130 . A push switch 132 is mounted on the switch board 130 . The push switch 132 is arranged inside the through hole 14b of the outlet outer cover 14 (see FIGS. 1 to 3). As a result, the push switch 132 can be pressed from the outside of the outlet 10 through the through hole 14b. The switchboard 130 is connected to the substrate 120 via signal lines. When the push switch 132 is pressed, an actuation signal is transmitted from the substrate 120 to the opening/closing unit 70, which will be described later. As a result, the opening/closing unit 70 switches from the closed state to the open state, and the push switch 132 flashes to indicate an abnormal state. By pressing the push switch 132 in this manner, it is possible to test whether or not the outlet 10 operates normally. Further, by pressing the push switch 132, the buzzer device that notifies the overheating state can be stopped.

A power lamp light emitting unit 134 and an error lamp light emitting unit 136 are mounted on the switch board 130 . The power lamp light emitting part 134 is arranged to face the inside of the power lamp portion 14c of the outlet outer cover 14, and the fault lamp light emitting part 136 is arranged to face the inside of the fault lamp portion 14d of the outlet outer cover 14. (See Figure 2). The power lamp light emitting unit 134 is preferably configured by, for example, a light emitting diode (LED) that emits green light. The fault lamp light emitting unit 136 is preferably composed of, for example, a light emitting diode (LED) that emits red light. The power lamp light emitting unit 134 is lit when the outlet 10 is in the power supply state. The abnormal light emitting unit 136 is lit or blinks when abnormal heat generation is detected in the outlet 10 as will be described later. Since the lighting states of these light emitting units 134 and 136 are visible from the outside of the outlet 10, the light emitting units 134 and 136 constitute a part of the notification unit.

Next, the opening/closing unit 70 will be described with reference to FIGS. 7 and 8. FIG. FIG. 7 is a side view of the opening/closing unit 70 in the closed state. FIG. 8 is a side view of the opening/closing unit 70 in the open state. In FIGS. 7 and 8, the opening/closing unit 70 is shown with the wall surface of the housing covering the outside in the width direction removed.

As shown in FIG. 7 , the opening/closing unit 70 has a housing 72 . An operation lever 71 is rotatably provided on the front surface of the housing 72 in an exposed state.

The opening/closing unit 70 contains a coil 73 , a movable iron piece 74 , a trigger lever 75 , a support lever 76 , an operating plate 77 , a pressure spring 78 , an operating member 79 , press springs 80 and 85 , an L-phase movable terminal plate 81 and a L-phase movable terminal portion 82, N-phase movable terminal plate 83, N-phase movable terminal portion 84, L-phase fixed terminal plate 86, L-phase fixed terminal portion 87, N-phase fixed terminal plate 88, N-phase fixed terminal portion 89 Prepare.

Coil 73 is powered in response to an actuation signal from substrate 120 . Thereby, the coil 73 generates magnetic force. The movable iron piece 74 is provided in the housing 72 so as to be movable in the front-rear direction Y at a position close to the rear (lower side in FIG. 7) of the coil 73 . The movable iron piece 74 is fixed to one end of the N-phase movable terminal plate 83 . One end of the N-phase movable terminal plate 83 is electrically and mechanically connected to the other end of the N-phase conductor 54b by soldering or the like.

The trigger lever 75 is substantially L-shaped, and is provided on the widthwise side wall surface of the housing 72 so as to be rotatable about a shaft portion 75a. One end of the trigger lever 75 is arranged at a position where it can be engaged with the movable iron piece 74 .

The support lever 76 has a shape extending in the front-rear direction Y, and is provided on the widthwise side wall surface of the housing 72 so as to be rotatable around a shaft portion 76a. One end of the support lever 76 is arranged at a position where it can be engaged with the other end of the trigger lever 75 .

One end of the operating plate 77 abuts on the other end of the support lever 76 and is supported. The operating plate 77 is connected to the other end of a substantially U-shaped pressure spring 78 whose one end is connected to the operating lever 71 . is pressed against.

A torsion spring 90 is arranged around the rotation center of the operating lever 71 . As will be described later, when the opening/closing unit 70 operates to cut off power, the operating lever 71 is rotated by the biasing force of the torsion spring 90, and protrudes in front of the outlet 10 as shown in FIG. Become.

As shown in FIG. 7, the actuating member 79 is arranged adjacent to the support lever 76 and the actuating plate 77, and is provided on the lateral side wall of the housing 72 so as to be rotatable about a shaft portion 79a. A rear end (lower end in FIG. 7) of the operating member 79 is biased by a press spring 80 . As a result, the operating member 79 is urged by the pressing spring 80 to rotate counterclockwise in FIG.

The actuating member 79 is provided at a substantially central portion in the front-rear direction Y so as to be engageable with the L-phase movable terminal plate 81 . One end of the L-phase movable terminal plate 81 is electrically and mechanically connected to the other end of the L-phase conductor 54a by soldering or the like. An L-phase movable terminal portion 82 is fixed to the other end of the L-phase movable terminal plate 81 by, for example, caulking.

The L-phase movable terminal plate 81 is held by the actuating member 79 at a position rotated clockwise against the biasing force of the pressure contact spring 85 . As a result, as will be described later, when the operating member 79 is rotated counterclockwise by the biasing force of the pressure spring 80 , the L-phase movable terminal plate 81 is released from the pressing force of the pressure spring 85 . is pushed up by the biasing force of

Also, the operating member 79 presses the intermediate portion of the N-phase movable terminal plate 83 . An N-phase movable terminal portion 84 is fixed to the other end portion of the N-phase movable terminal plate 83 by, for example, caulking. As will be described later, when the operating member 79 rotates counterclockwise, the N-phase movable terminal plate 83 is pushed up by the rear end portion (lower end portion in FIG. 7) of the operating member 79, and the N-phase movable terminal portion 84 moves forward (upward in FIG. 7).

As shown in FIG. 7, the L-phase movable terminal portion 82 is in contact with and electrically connected to an L-phase fixed terminal portion 87 arranged in the housing 72 . The L-phase fixed terminal portion 87 is fixed to one end portion of the L-phase fixed terminal plate 86 by caulking or the like. The L-phase fixed terminal plate 86 extends outside the housing 72 .

The N-phase movable terminal portion 84 is in contact with and electrically connected to an N-phase fixed terminal portion 89 arranged in the housing 72 . The N-phase fixed terminal portion 89 is fixed to one end portion of the N-phase fixed terminal plate 88 by caulking or the like. The N-phase fixed terminal plate 88 extends outside the housing 72 .

In the opening/closing unit 70 configured as described above, when power is supplied to the coil 73 by an operation signal from the substrate 120, the movable iron piece 74 is attracted by the magnetic force of the coil 73 and moves in the direction of the arrow A as shown in FIG. move to

Then, one end of the trigger lever 75 is pushed by the movable iron piece 74 to rotate clockwise, and the support lever 76 is pushed by the other end of the trigger lever 75 to rotate counterclockwise. Rotate.

Then, one end of the operating plate 77 supported by the upper end of the support lever 76 is released, and the operating plate 77 is pushed backward (downward in FIG. 8) by the pressing force of the pressing spring 78 . At this time, the operation lever 71 rotates in a state in which the end protrudes toward the front surface of the outlet 10 due to the reaction force of the pressing spring 78 and the biasing force of the torsion spring 90 .

Since the operating plate 77 is no longer supported by the support lever 76 , the operating member 79 , which has been pushed clockwise by the operating plate 77 and supported, rotates counterclockwise due to the biasing force of the pressure contact spring 80 . . As a result, the L-phase movable terminal plate 81 is moved by the biasing force of the compression spring 85 , and the L-phase movable terminal portion 82 is separated from the L-phase fixed terminal portion 87 . At the same time, the N-phase movable terminal plate 83 is lifted by being pushed by the operating member 79 rotating counterclockwise. As a result, the N-phase movable terminal portion 84 is separated from the N-phase fixed terminal portion 89 . By separating the L-phase movable terminal portion 82 and the N-phase movable terminal portion 84 from the L-phase fixed terminal portion 87 and the N-phase fixed terminal portion 89, respectively, the switch unit 70 switches from the closed state to the open state. As a result, the power supply to the blade receiving spring blocks 42a and 42b is interrupted, and the power supplied from the outlet 10 to the load through the plug is turned off. When the abnormal state is canceled and the operating lever 71 is manually returned from the state shown in FIG. 8 to the state shown in FIG. state, and can return from an open circuit state to a closed circuit state.

It should be noted that the opening/closing unit 70 is not limited to the configuration described above, and any known electrical circuit breaking mechanism may be used.

FIG. 9 is a perspective view showing the terminal portion 100 of the outlet 10 in a partially exploded state. The outlet 10 has a terminal portion 100 . The terminal portion 100 is a connection portion to which an external power supply line is electrically and mechanically connected.

The terminal portion 100 includes an L-phase fixed terminal plate 86 , an N-phase fixed terminal plate 88 , locking springs 92 and 94 and an unlocking member 96 . The L-phase fixed terminal plate 86 has an L-phase connection portion 86 a bent in a U shape at the other end extending from the housing 72 of the opening/closing unit 70 . The N-phase fixed terminal plate 88 has an N-phase connection portion 88 a bent in a U-shape at the other end extending from the housing 72 of the switch unit 70 . Lock springs 92 and 94 are arranged inside the connecting portions 86a and 88a, respectively. As a result, the connection portions 86a and 88a are so-called quick connection terminals that can be connected quickly by inserting the connection terminals of the L-phase and N-phase external power supply lines from the rear, respectively.

By pushing the unlocking member 96, the lock springs 92 and 94 can be separated from the respective phase connection portions 86a and 88a, and as a result, the connection terminals of the L-phase and N-phase external power supply lines are connected to the connection portions. It can be removed from 86a, 88a.

The terminal portion 100 also includes a grounding terminal portion 102 . The grounding terminal portion 102 includes a grounding terminal plate 104 formed by punching and bending a metal plate such as a copper plate. A screw 105 is screwed into one end of the grounding terminal plate 104 , and the screw 105 can be used to connect the external grounding wire to the grounding terminal portion 102 . A grounding blade receiving spring 106 is formed at the other end of the grounding terminal plate 104 . The grounding blade receiving spring 106 is arranged inside the grounding terminal insertion opening 20c formed in the lower stage of the upper cover 12a of the outlet main body cover 12. As shown in FIG. As a result, the grounding terminal of the insertion plug inserted from the grounding terminal insertion opening 20c is connected to the grounding terminal plate 104. As shown in FIG.

FIG. 10 is a perspective view showing a temperature sensor mounting structure for an outlet. 11 is a partially cutaway plan view showing the temperature sensor mounting structure of FIG. 10. FIG. 12 is an exploded perspective view showing the blade receiving spring blocks 42a, 42b and the body member 44. FIG. 10 to 12, illustration of the fixing member 46 constituting the blade receiving spring unit 40 is omitted.

As shown in FIGS. 10 to 12, the blade receiving spring unit 40 supports an L-phase blade receiving spring block 42a, an N-phase blade receiving spring block 42b, and these blade receiving spring blocks 42a and 42b. and a body member 44 for Each of the blade receiving spring blocks 42a, 42b has a shape symmetrical with respect to the BB line, which is the center line of the blade receiving spring unit 40 in the width direction. Although the blade receiving spring block 42a will be described below, the same applies to the blade receiving spring block 42b.

The blade receiving spring block 42a includes two pairs of blade receiving springs 48, connecting portions 50 for mechanically and electrically connecting the blade receiving springs 48, and along the front-rear direction Y from the edges of the connecting portions 50. and a connecting terminal portion 52 which is formed by bending. A temperature sensor 54 is attached to the connection terminal portion 52 .

In this embodiment, the temperature sensor 54 is clamped and fixed by a clip 56 that is an example of a pressing member. As a result, the temperature sensor 54 is arranged in close contact with the blade receiving spring block 42a, which is the object of temperature measurement. The clip 56 integrally has a pair of clamping pieces 56a and a connecting portion 56b that connects the clamping pieces 56a.

Since the temperature sensor 54 is clamped by the clip 56 in this manner, the temperature sensor 54 is attached in close contact with the connection terminal portion 52, which is the object of temperature measurement. As a result, the accuracy of temperature measurement by the temperature sensor 54 is improved. Further, the blade receiving spring blocks 42a and 42b can be easily assembled to the body member 44 with the temperature sensor 54 attached to the connection terminal portion 52 with the clip 56. As shown in FIG.

The temperature sensor 54 is preferably composed of a thermistor, a resistance temperature detector, or a thermocouple. It is attached in close contact with the connection terminal portion 52 to be measured. A heat conducting member may be interposed between the temperature sensor 54 and the connection terminal portion 52 . The thermally conductive member is preferably composed of, for example, a flexible and thin member such as a thermally conductive sheet or grease. By providing such a heat-conducting member, the temperature sensor 54 is likely to be in a state of being in closer contact with the temperature measurement target, which can contribute to the improvement of the temperature measurement accuracy.

In this embodiment, the clip 56 is used as a pressing member for pressing the temperature sensor 54 to bring it into close contact with the connection terminal portion 52, which is the object of temperature measurement. However, the present invention is not limited to this. . Instead of the clip 56, an urging member such as a coil spring or leaf spring may be used to press the temperature sensor against the temperature measurement target.

13 is a perspective view showing a state in which one blade receiving spring block 42a is attached to the body member 44. FIG. 14 is an exploded perspective view showing one blade receiving spring block 42a and the body member 44. FIG. 13 and 14, illustration of the temperature sensor 54 and the clip 56 is omitted.

As shown in FIGS. 13 and 14, a blade receiving spring block (blade receiving member) 42a includes two pairs of blade receiving springs 48 and a coupling portion that mechanically and electrically connects each blade receiving spring 48. 50 and a connecting terminal portion 52 formed by bending along the front-rear direction Y from the edge portion of the connecting portion 50 . The blade receiving spring 48 includes a pair of blade receiving pieces facing each other. The tip of each blade receiving piece is bent outward so as to open in a substantially V shape. This ensures that the plug blades of the plug-in plug are received between the pair of blade receptacles.

The blade receiving spring block 42a also integrally has a U-shaped bent spring portion 49 provided spaced apart on both sides of a blade receiving spring 48 including a pair of blade receiving pieces. The bending spring portion 49 has a bending portion 49a on the same side as the tip portions of the pair of blade receiving pieces, and has a pair of extending portions 49b extending from the bending portion 49a toward the base end portion side of the pair of blade receiving pieces. is doing.

The blade receiving spring block 42a is housed in the body member 44 and arranged. The body member 44 is formed so as to partition four recesses 45 . Two ribs 47a are formed to extend in the front-rear direction Y and are spaced apart from each other on the wall surface located on the center side in the width direction X among the inner wall surfaces defining the recess 45 . The strength of the body member 44 can be increased by these ribs 47a.

Further, ribs 47b are formed to face each other on inner wall surfaces facing in the up-down direction Z among the inner wall surfaces defining the recess 45. As shown in FIG. These ribs 47b are, as shown in FIG. 49b. A bent portion 49a of the bent spring portion 49 is in contact with the end portion of the rib 47b.

By assembling the bent portion 49a of the bent spring portion 49 in contact with the end portion of the rib 47b formed in the body member 44, the blade receiving spring block 42a is accurately positioned with respect to the body member 44. can be assembled into Further, the pair of extending portions 49b of the bending spring portion 49 sandwich the rib 47b, so that the blade receiving spring block 42a can be firmly assembled to the body member 44. As shown in FIG.

Further, when a force in the width direction X acts on the plug to be inserted into or removed from the outlet 10, the pair of blade receiving pieces are plastically deformed so as to open abnormally, resulting in contact pressure between the blade and the blade receiving pieces. may become weaker. Then, spark discharge or the like may occur due to poor contact, which may cause abnormal overheating. On the other hand, in the outlet 10 of the present embodiment, the rib 47b is clamped by the bending spring portion 49 integrally formed with the blade receiving spring 48, so that even if the opening force acts as described above, the pair of Abnormal opening and deformation of the blade receiving spring 48 formed of the blade receiving piece can be prevented or suppressed.

In this embodiment, the ribs 47b are formed on the two inner wall surfaces of the recess 45 facing each other in the vertical direction Z, and the ribs 47b are sandwiched by the bending spring portions 49. However, the present invention is not limited to this. A rib protruding from the inner wall surface of the recess 45 in the front-rear direction Y (that is, the bottom surface of the recess 45) may be sandwiched between the pair of extending portions of the bending spring portion 49, or a rib protruding from the bottom surface may be sandwiched. A configuration may be adopted in which the pair of blade receiving pieces are sandwiched by the proximal end portions (that is, the end portions on the side opposite to the distal end portions).

FIG. 15 is a perspective view showing an enlarged part of the terminal portion. As shown in FIG. 15, a printed circuit board 110 for temperature measurement may be provided. Temperature sensors 112 a and 112 b are mounted on the printed circuit board 110 . The temperature sensors 112a and 112b are preferably composed of, for example, a thermistor, a resistance temperature detector, or a thermocouple. The temperature sensors 112a and 112b may be provided on the printed circuit board 110 covered with a heat conducting member. In this case, the temperature sensors 112a and 112b are joined to the L-phase fixed terminal plate 86 and the N-phase fixed terminal plate 88, which are objects of temperature measurement, via heat conducting members. The thermally conductive member is preferably a flexible resin having thermal conductivity. As a result, the temperature sensors 112a and 112b are brought into closer contact with the temperature measurement target, and the temperature measurement accuracy can be improved. In order to ensure more reliable electrical insulation between the L-phase fixed terminal plate 86 and the N-phase fixed terminal plate 88, which are objects of temperature measurement, the heat-conducting member is preferably made of insulating resin. As a specific example, the heat-conducting member can be made of a low-hardness acrylic resin, such as 3M's Hyper Soft Heat Dissipating Sheets (registered trademark) 6500H, 6510H, 5578H.

The temperature sensor 112a mounted on the printed circuit board 110 is connected to the L-phase fixed terminal plate 86, and the temperature sensor 112b mounted on the printed circuit board 110 is connected to the N-phase fixed terminal plate 88. The temperature of the L-phase fixed terminal plate 86 measured by the temperature sensor 112a is transmitted to the substrate 120 via the signal line 114a. Also, the temperature of the N-phase fixed terminal plate 88 measured by the temperature sensor 112b is transmitted to the substrate 120 via the signal line 114b.

A control device provided on the substrate 120 determines whether or not the fixed terminal temperatures measured by the temperature sensors 112a and 112b exceed a predetermined threshold temperature. Then, when the temperature of at least one of the fixed terminal plates 86, 88 exceeds a predetermined threshold temperature, the control device determines that the outlet 10 is in an overheated state, and sends an operation signal to the switching unit 70 via the signal line 60c. Send. As a result, the opening/closing unit 70 is actuated to open the circuit, and the power supply to the blade receiving spring blocks 42a and 42b is interrupted. As the predetermined threshold temperature here, the same value as that compared with the temperatures measured by the temperature sensors 54 of the blade receiving spring blocks 42a and 42b can be used.

In the outlet 10 of the present embodiment, the temperature sensors are arranged on both the blade receiving spring blocks 42a, 42b and the fixed terminal plates 86, 88. A temperature sensor may be arranged on only one of them.

As described above, the outlet temperature sensor attachment structure according to the present embodiment is a temperature sensor attachment structure for attaching the temperature sensor 54 to the temperature measurement target in the outlet 10 into which the plug is inserted and removed. and a pressing member that presses the temperature sensor 54 so as to bring it into close contact with the temperature measurement target. Here, the pressing member is a clip 56 that sandwiches and presses the temperature sensor 54 and the object of temperature measurement. It is preferable to have By pressing the temperature sensor 54 against the object of temperature measurement with a pressing member such as the clip 56 in this way, the temperature can be measured with high accuracy.

Further, in the present embodiment, a heat conducting member may be interposed between the temperature sensor 54 and the object of temperature measurement. As a result, the temperature sensor 54 can be brought into closer contact with the temperature measurement target, and the temperature can be measured with higher accuracy.

Further, in the present embodiment, the temperature measurement target is a part of the fixed terminal plates 86, 88 to which the external power line is connected to the outlet 10, or a part of the blade receiving spring blocks 42a, 42b into which the plug is inserted and removed. It is preferable that at least one of By measuring the temperature of the members forming the current path in the outlet 10 in this manner, the overheating state of the outlet 10 can be detected accurately and quickly.

The temperature sensor 54 is any one of a thermistor, a resistance temperature detector, and a thermocouple, and a clip 56, which is an example of a pressing member, selects any one of the thermistor, resistance temperature detector, and thermocouple as a temperature measurement target. Close contact is preferred.

Next, another example of the outlet temperature mounting structure will be described with reference to FIGS. 16 to 19. FIG. FIG. 16 is an exploded perspective view showing another example of the outlet temperature sensor mounting structure. 17 is an assembled perspective view of the temperature sensor mounting structure of FIG. 16. FIG. 18 is a plan view including a partial cross section showing the temperature sensor mounting structure of FIG. 17. FIG. 19 is a perspective view (partially including a transparent portion) showing how the clip is pressed by the protrusion of the cover member in the temperature sensor mounting structure of FIG. 17. FIG.

As shown in FIGS. 16 to 18, the blade receiving spring unit 40 accommodates an L-phase blade receiving spring block 42a, an N-phase blade receiving spring block 42b, and these blade receiving spring blocks 42a and 42b. and a body member 44 for Each of the blade receiving spring blocks 42a, 42b has a shape symmetrical with respect to the BB line, which is the center line of the blade receiving spring unit 40 in the width direction. Although the blade receiving spring block 42a will be described below, the same applies to the blade receiving spring block 42b.

The blade receiving spring block 42a includes two pairs of blade receiving springs 48, connecting portions 50 for mechanically and electrically connecting the blade receiving springs 48, and along the front-rear direction Y from the edges of the connecting portions 50. and a connecting terminal portion 52 which is formed by bending. The connection terminal portion 52 has a bent portion 52a that is bent into an L-shaped cross section. A temperature sensor 54 is attached to the bent portion 52 a of the connection terminal portion 52 .

In this embodiment, the temperature sensor 54 is clamped and fixed by clips 56 . As a result, the temperature sensor 54 is arranged in close contact with the blade receiving spring block 42a, which is the object of temperature measurement. The clip 56 integrally has a pair of clamping pieces 56a and a connecting portion 56b that connects the clamping pieces 56a. Since the temperature sensor 54 is clamped by the clip 56 in this manner, the temperature sensor 54 is attached in close contact with the bent portion 52a of the connection terminal portion 52, which is the object of temperature measurement. As a result, the accuracy of temperature measurement by the temperature sensor 54 is improved.

The temperature sensor 54 is preferably composed of any one of a thermistor, a resistance temperature detector, and a thermocouple. A heat conducting member may be interposed between the temperature sensor 54 and the bent portion 52 a of the connection terminal portion 52 . The thermally conductive member is preferably composed of, for example, a flexible and thin member such as a thermally conductive sheet or grease. By providing such a heat-conducting member, the temperature sensor 54 is likely to be in a state of being in closer contact with the temperature measurement target, which can contribute to the improvement of the temperature measurement accuracy.

The blade receiving spring blocks 42a, 42b, temperature sensor 54 and clip 56 are assembled to the body member 44 as follows.

A body member 44 made of an insulating resin molded product has a substantially rectangular parallelepiped shape. Four recesses 45 are defined in the body member 44 . The blade receiving spring blocks 42a, 42b are assembled to the body member 44 in a state in which the four pairs of blade receiving springs 48 of the blade receiving spring blocks 42a, 42b are accommodated in the concave portions 45, respectively.

On both side surfaces of the outer peripheral surface of the body member 44 that face each other in the width direction X, there are formed sensor housing portions 46 that are recessed in a rectangular shape when viewed from the front. A mounting portion 47 having a substantially U-shape when viewed from the front protrudes from the inner surface of the sensor housing portion 46 . The mounting portion 47 opens outward in the width direction X. As shown in FIG.

When assembling the blade receiving spring unit 40, as shown in FIG. 16, first, the temperature sensor 54 is inserted and accommodated in the sensor accommodating portion 46 of the body member 44 from the outside in the width direction X (direction of arrow C). . At this time, the temperature sensor 54 is placed and supported on the mounting portion 47 , and the signal line 60 a extending from the temperature sensor 54 is inserted into the opening of the mounting portion 47 .

Next, the blade receiving spring block 42a is assembled to the body member 44 by inserting the connection terminal portion 52 of the blade receiving spring block 42a into the sensor accommodating portion 46 in the direction of the arrow D along the front-back direction Y. As a result, the bent portion 52 a of the connection terminal portion 52 is arranged between the temperature sensor 54 and the wall surface of the sensor housing portion 46 .

In this state, the clip 56 is inserted into the sensor accommodating portion 46 from the arrow C direction. 17 and 18, the temperature sensor 54 is attached to the bent portion 52a of the connection terminal portion 52 in pressure contact with the clip 56. As shown in FIG. The temperature sensor 54 can be assembled in the other blade receiving spring block 42b in the same manner. Therefore, in the blade receiving spring unit 40 of the outlet 10 of the present embodiment, the temperature sensor 54 and the blade receiving spring blocks 42a, 42b are assembled to the body member 44, and the clip 56 is inserted to obtain the blade receiving spring blocks 42a, 42b. Attachment of the temperature sensor 54 to 42b can be performed more easily.

The blade receiving spring unit 40 assembled as described above is housed in the case 16 together with the opening/closing unit 70, as shown in FIG. A cover member 17 is attached to cover the front portion of the case 16 . The cover member 17 has four hook portions 17a protruding from the rear end portion, and is assembled to the case 16 by engaging the hook portions 17a with the engaging portions 22 on the side surfaces of the case 16. As shown in FIG. The upper cover 12a of the outlet main body cover 12, the operating lever 71 of the opening/closing unit 70, and the like are exposed from an opening formed in the front wall of the case 17. As shown in FIG. In addition, in FIG. 19, the case 16 is indicated by a dashed line so as to be seen through.

In this way, the case 16 for housing the body member 44 of the blade receiving spring unit 40 and the cover member 17 are provided. ing. In this case, the projecting portion 17b contacts and presses the connecting portion 56b of the clip 56 . As a result, it is possible to reliably prevent the clip 56 from coming off the blade receiving spring block 40 .

Note that the outlet temperature sensor mounting structure and the manufacturing method thereof according to the present disclosure are not limited to the above-described embodiments and modifications thereof, and various Of course, modifications and improvements are possible.

2 decorative cover 10 outlet 12 outlet main body cover (cover member) 12a upper cover 12b lower cover 13 mounting pin 14 outlet outer cover (cover member) 14a opening 14b through hole 14c power lamp portion 14d error light portion, 15 mounting hole, 16 case, 17 cover member, 17a hook portion, 17b protrusion, 18a, 18b blade insertion portion, 20a, 20b blade insertion opening, 20c grounding terminal insertion opening, 22 engaging portion , 24 bottom surface, 25a, 25b case inner surface, 26 column, 27 partition wall, 28, 30, 32 space, 29 support protrusion, 40 blade receiving spring unit, 42a, 42b blade receiving spring block (blade receiving member), 44 body member, 45 recessed portion, 46 sensor storage portion, 47 placement portion, 48 blade receiving spring, 49 bending spring portion, 49a bending portion, 49b extending portion, 50 coupling portion, 52 connection terminal portion (temperature measurement target), 52a Bending portion 54, 112a, 112b Temperature sensor 54a L-phase conductor 54b N-phase conductor 56 Clip 56a Clamping piece 56b Connecting part 60a, 60b, 60c, 62a, 62b Signal line 70 Switching unit 71 Operation Lever 72 Housing 73 Coil 74 Movable Iron Piece 75 Trigger Lever 75a, 76a, 79a Shaft 76 Support Lever 77 Operating Plate 78 Pressing Spring 79 Operating Member 81 L-Phase Movable Terminal Plate 82 L-Phase Movable terminal portion, 83 N-phase movable terminal plate, 84 N-phase movable terminal portion, 86 L-phase fixed terminal plate, 86a L-phase connection portion, 87 L-phase fixed terminal portion, 88 N-phase fixed terminal plate, 88a N-phase connection portion , 89 N-phase fixed terminal portion, 96 unlocking member, 100 terminal portion, 102 grounding terminal portion, 104 grounding terminal plate, 110 printed circuit board, 114a, 114b signal line, 120 substrate, 130 switch board, 132 push switch, 134 power lamp light-emitting part, 136 fault lamp light-emitting part.

Claims (10)

A temperature sensor mounting structure for mounting a temperature sensor on a temperature measurement target in an outlet into which a plug is inserted and removed,
the temperature sensor;
a pressing member that presses the temperature sensor so as to bring it into close contact with the temperature measurement target ;
The pressing member is a clip that clamps and presses the temperature sensor and the temperature measurement target, and the clip integrally has a pair of clamping pieces and a connecting portion that connects the clamping pieces,
The temperature measurement target is a part of a blade receiving member housed in a body member, and the body member has a mounting portion for the temperature sensor,
The blade receiving member is housed in the body member, and a part of the blade receiving member and the temperature sensor are sandwiched with the temperature sensor mounted on the mounting portion,
Outlet temperature sensor mounting structure. 2. The outlet temperature sensor mounting structure according to claim 1 , wherein a heat conducting member is interposed between said temperature sensor and said temperature measurement object. 2. The object to be measured for temperature is at least one of a portion of a terminal plate to which an external power supply line is connected to an outlet, or a portion of the blade receiving member into which a plug is inserted and removed. 2. The outlet temperature sensor mounting structure according to 2. comprising a case for housing the body member and a cover member,
2. The outlet temperature sensor mounting structure according to claim 1 , wherein a projection for pressing said clip is provided at a position facing said clip on the inner surface of said cover member . The temperature sensor is any one of a thermistor, a resistance temperature detector, and a thermocouple, and the pressing member brings one of the thermistor, resistance temperature detector, and thermocouple into close contact with the object of temperature measurement. 5. The outlet temperature sensor mounting structure according to any one of items 4 to 5 . A method for producing a temperature sensor attachment structure for attaching a temperature sensor to a temperature measurement target in an outlet into which a plug is inserted and removed, comprising:
placing the temperature sensor in contact with the temperature measurement object;
a pressing member that presses the temperature sensor so as to bring the temperature sensor into close contact with the temperature measurement target ;
The pressing member is a clip that clamps and presses the temperature sensor and the temperature measurement target, and the clip integrally has a pair of clamping pieces and a connecting portion that connects the clamping pieces,
The temperature measurement target is a part of a blade receiving member housed in a body member, and the body member has a mounting portion for the temperature sensor,
housing the blade receiving member in the body member;
Place the temperature sensor on the mounting part,
inserting the clip from the outside of the body member, and sandwiching a portion of the blade receiving member and the temperature sensor with the clip;
A method for producing a temperature sensor mounting structure for an outlet. 7. The method of producing a temperature sensor mounting structure for an outlet according to claim 6 , wherein a heat conducting member is interposed between said temperature sensor and said object of temperature measurement. 7. The object to be measured for temperature is at least one of a portion of a terminal plate to which an external power supply line is connected to an outlet, or a portion of the blade receiving member into which a plug is inserted and removed. 8. The method for producing the outlet temperature sensor mounting structure according to 7 . housing the body member in a case,
attaching a cover member to the case;
7. The method for producing a temperature sensor mounting structure for an outlet according to claim 6 , wherein a protrusion provided on the inner surface of said cover member at a position facing said clip presses said clip. 6. The temperature sensor is any one of a thermistor, a resistance temperature detector, and a thermocouple, and the pressing member brings one of the thermistor, resistance temperature detector, and thermocouple into close contact with the object of temperature measurement . 10. The method for producing the outlet temperature sensor mounting structure according to any one of claims 9 .

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