JP2013161724A - Plug socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plug socket capable of suppressing misinsertion of foreign matters by a relatively simple structure.SOLUTION: A plug socket 10 has: a cover 1 obtained by uniformly molding a cover part 1a penetrated by a terminal insertion port 1aa into which a terminal of a power plug is inserted, and a shaft part 1b protruding on a back face side opposite to a front face side where the terminal is inserted, in the cover part 1a; a door 2 that has a door part 2a rotatably supported by the shaft part 1b and closing the terminal insertion port 1aa, and a through-hole part 2c disposed adjacent to the door part 2a and opening the terminal insertion port 1aa, and that rotates around a shaft of the shaft part 1b at insertion of the terminal into the terminal insertion port 1aa to enable the terminal to be inserted into the through-hole part 2c; a body 4 having a door receiving part 4a supporting the door 2 from an opposite surface side to the cover 1 to suppress coming out of the door 2 from the shaft part 1b; and a spring 3 disposed between the cover 1 and the body 4 side and pressing the door 2 around the shaft so that the door part 2a closes the terminal insertion port 1aa.

Description

  The present invention relates to an outlet.

  2. Description of the Related Art Conventionally, there has been provided an outlet that suppresses insertion of a foreign substance other than a terminal into a terminal insertion slot into which a terminal of a power plug is inserted from the viewpoint of safety or the like.

  As an outlet of this type, for example, as shown in FIG. There is known an outlet with a rotating door in which 120 (referred to as a second lid) is screwed and fixed with a tapping screw 130 (see Patent Document 1).

  In the outlet of Patent Document 1, a shaft rod 122 fitted with a torque spring 125 provided at the bottom axis of the second lid 120 is formed in the bottom axis of the circular groove 106 provided in the first lid 105. The shaft is fitted into the shaft fitting hole 108. In the outlet, the lower end portion of the torque spring 125 is fitted and locked in the spring fitting hole 107, and the second lid 120 can be rotated repeatedly with respect to the first lid 105 by the spring force of the torque spring 125. .

  When using the outlet, the tip of the plug blade terminal, which is the terminal of the power plug, is inserted into the plug blade insertion holes 121, 121 formed in the plate surface of the second lid 120 to resist the spring force of the torque spring 125. The second lid 120 is rotated in a certain direction (usually rightward). Accordingly, the outlet matches the plug blade insertion ports 121 and 121 formed in the plate surface of the second lid 120 with the plug blade terminal insertion ports 109 and 109 which are terminal insertion ports provided in the first lid 105. The plug blade terminal of the power plug can be inserted and connected to the blade receiving terminals 103 and 103 housed in the instrument base 101. In addition, when the outlet plug terminal of the power plug is pulled out, the second lid 120 is restored to its original state by the repulsive spring force of the torque spring 125, and the plug blade terminal insertion port provided in the first lid 105 is used. 109 and 109 are closed.

  In such an outlet, when the blade terminal is not inserted, the second lid 120 serving as a door block the plug blade terminal insertion port 109, which is a terminal insertion port, to suppress the entry of foreign matter. It becomes possible.

JP 2001-68199 A

  By the way, in the outlet of the above-mentioned patent document 1, the tapping screw 130 is used to pivotally support the second lid body 120 that is a door body that closes the terminal insertion port into which the terminal of the power plug is inserted. The tapping screw 130 is generally made of a metal material having a higher strength than that of the resin. Therefore, the outlet has a number of parts that is increased by the amount of the metal material that pivotally supports the door body, and the structure tends to be complicated and the manufacturing cost tends to increase. At present, there is a demand for an outlet with a simpler configuration and capable of suppressing erroneous insertion of foreign matter, and the above-described outlet configuration alone is not sufficient, and further improvements are required.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide an outlet capable of suppressing erroneous insertion of a foreign object with a relatively simple structure.

  The outlet of the present invention is integrally formed with a cover part through which a terminal insertion port for inserting a terminal of a power plug is inserted and a shaft part protruding to the back side opposite to the front side where the terminal is inserted in the cover part. A terminal of the terminal provided with a cover body, a door portion that is pivotally supported by the shaft portion and closes the terminal insertion port, and a through-hole portion that is arranged adjacent to the door portion and opens the terminal insertion port. A door body that rotates around the axis of the shaft portion when inserted into the insertion port so that the terminal can be inserted into the through-hole portion, and the door body that supports the door body from the side opposite to the cover body. The door body is provided between a body body having a door body receiving portion that suppresses the shaft portion from being pulled out and the cover body side and the body body side, and the door portion closes the terminal insertion port. And a spring body that biases the shaft around the axis.

  The outlet of the present invention has an effect that it is possible to suppress erroneous insertion of foreign matters with a relatively simple structure.

It is the disassembled perspective view seen from the front side which shows the outlet socket of this embodiment. It is the disassembled perspective view seen from the back side which shows the outlet socket of this embodiment. The principal part of the outlet socket of this embodiment is shown, (a) is a front view, (b) is a right side view, and (c) is a rear view. The other principal part of the outlet socket of this embodiment is shown, (a) is a front view, (b) is a right side view, and (c) is a rear view. The other principal part of the outlet socket of this embodiment is shown, (a) is a front view, (b) is a right side view, and (c) is a rear view. It is a front view which shows the outlet socket of this embodiment. It is a left view which shows the outlet socket of this embodiment. It is a rear view which shows the outlet socket of this embodiment. It is a bottom view which shows the outlet socket of this embodiment. It is a perspective view which shows the outlet socket of this embodiment. FIG. 7 is a cross-sectional explanatory view showing the outlet of the present embodiment, taken along AA in FIG. 6. FIG. 7 is an explanatory cross-sectional view taken along the line BB in FIG. 6, showing the outlet according to the present embodiment. It is a perspective view which shows the conventional outlet.

  Hereinafter, the outlet 10 of this embodiment is demonstrated based on FIG. 1 thru | or FIG. In addition, in the figure, the same number is attached | subjected with respect to the same member, and the overlapping description is abbreviate | omitted.

  As shown in FIGS. 1 and 2, the outlet 10 of the present embodiment includes a cover part 1a through which a terminal insertion port 1aa for inserting a terminal of a power plug (not shown) is inserted, and the terminals in the cover part 1a. A cover body 1 is integrally formed with a shaft portion 1b (see FIG. 2) that protrudes on the back side opposite to the front side into which is inserted. The outlet 10 has a door body 2 that is pivotally supported by the shaft portion 1b. The door body 2 includes a door portion 2a that closes the terminal insertion port 1aa and a through-hole portion 2c that is disposed adjacent to the door portion 2a and opens the terminal insertion port 1aa. The door body 2 rotates around the axis of the shaft portion 1b when the terminal is inserted into the terminal insertion port 1aa so that the terminal can be inserted into the through hole portion 2c. In addition, the outlet 10 has a body body 4 that includes a door body receiving portion 4a that supports the door body 2 from the side opposite to the cover body 1a and suppresses the door body 2 from coming out of the shaft portion 1b. . Further, the outlet 10 has a spring body 3 that is arranged between the cover body 1 side and the body body 4 side and biases the door body 2 around the axis so that the door portion 2a closes the terminal insertion port 1aa. doing.

  The outlet 10 of the present embodiment is attached by being inserted into a socket provided on a wall surface (not shown), for example. The outlet 10 is capable of electrically connecting the outlet 10 side and the socket side by inserting the connection terminal 4c of the outlet 10 into the insertion port of the socket. Moreover, the outlet 10 of this embodiment is attached with power plugs of various electric appliances (not shown). The outlet 10 is capable of electrically connecting the outlet 10 side and the appliance side by inserting the terminal of the power supply plug of the appliance into the terminal insertion slot 1aa. The outlet 10 of the present embodiment includes a pair of terminal insertion ports 1aa and 1aa for inserting the terminal of the power plug on the front side of the outlet 10, and a pair of connection terminals 4c and 4c to be inserted into the socket on the back side of the outlet 10. It has. Note that the outlet 10 of the present embodiment has a structure to which a power plug defined by IEC (IEC System for Conformity Testing to Standards for Safety of Electrical Equipment) CEE7 / 4, CEE7 / 5, or the like can be connected. Similarly, the outlet 10 of the present embodiment has a structure that can be connected to a socket defined by IECEE CEE7 / 4, CEE7 / 5, or the like.

  The outlet 10 of the present embodiment has a built-in receiver that receives an instruction signal such as wireless or infrared transmitted from a transmitter (not shown). In addition, the outlet 10 incorporates a control circuit that performs control so as to perform electrical connection and disconnection between the socket on the power supply side and the electrical appliance side. In the outlet 10, for example, an internal receiver receives an instruction signal from a transmitter, and a control circuit electrically connected to the receiver supplies power from the socket on the wall surface to the appliance side based on the instruction signal. Switch to stop. For example, when the person away from the outlet 10 operates the transmitter, the outlet 10 performs power feeding from the socket side of the wall surface to the electric appliance side such as a lighting fixture and stops feeding. As a result, the outlet 10 can be turned on and off by the transmitter only by connecting a lighting fixture that does not have a function of performing remote operation to the socket side of the wall surface via the outlet 10. Note that the outlet 10 is not limited to a configuration including a receiver, and may be provided with a sensor device such as a human sensor in order to perform power supply and power supply stop in the presence or absence of a person. The outlet 10 may have a function such as a leakage prevention device. Further, the outlet 10 is not limited to one that is connected to a socket provided on the wall surface. The outlet 10 may be used as a wiring device itself embedded in the wall surface without providing a receiver.

  The outlet 10 includes a cover body 1 and a body body 4 that are separable. The cover body 1 and the body body 4 constitute a box-shaped body having a hollow inside by fitting the cover body 1 and the body body 4 together. The cover body 1 and the body body 4 can be formed using, for example, an electrically insulating resin material. The outlet 10 of the present embodiment is configured by fitting a bottomed rectangular tube-shaped cover body 1 and a bottomed rectangular tube-shaped body body 4 together. The cover body 1 is illustrated in FIG. 3, and the right side view and the left side view (not shown) of the cover body 1 shown in FIG. 3B are symmetrical. The body body 4 is shown in FIG. 4, and the right side view and the left side view (not shown) of the body body 4 shown in FIG. 4B are symmetrical.

  The cover body 1 has a rectangular outer shape when viewed from the front, and includes a bottomed cylindrical recess 1c at the center on one end side in the longitudinal direction. On the front side, the cover body 1 has a pair of terminal insertion ports 1aa and 1aa through which the pair of pins of the power plug are inserted in the inner bottom surface of the recess 1c. Each terminal insertion opening 1aa has a circular shape so that the cylindrical pin of the power plug can be inserted in a front view. The cover body 1 has a shape inside the recess 1c into which the power plug can be inserted. Although the power plug is not shown in the drawing, the outer shape of the power plug inserted into the recess 1c is a columnar shape, and a side end portion is formed on the remainder of the column cut out into a circular arc column shape. The thing of the shape which has can be utilized. The recess 1c includes a pair of protrusions 1ca and 1ca corresponding to the side end portions of the power plug at positions where the power plug is inserted, corresponding to the pair of side end portions on the power plug side. The outlet 10 can prevent the cylindrical power plug from rotating with respect to the outlet 10 by a plurality (four in this case) of protrusions 1ca provided in the recess 1c of the cover body 1. .

  Further, the cover body 1 is provided with a pair of adjacent protruding portions 1ca and 1ca facing each other in the concave portion 1c, and is recessed from the inner wall surface of the concave portion 1c perpendicular to the line segment between the opposing protruding portions 1ca and 1ca. A pair of slit-shaped openings 1cb and 1cb are provided over the inner bottom surface of 1c (see FIGS. 1 and 3). When the power plug is inserted, the outlet 10 elastically contacts the power plug and restricts the power plug from dropping from the recess 1c, and the contact piece 4ba that can function as a fastener protrudes from each opening 1cb. ing. The pair of contact pieces 4ba protrude from each opening 1cb and are curved so that the inner diameter of the recess 1c is narrowed so as to be elastically contacted with the power plug. The outlet 10 of the present embodiment also has a function that allows the contact piece 4ba to be electrically grounded to the power plug side (see FIGS. 1, 6, and 10 to 12).

  The outlet 10 of the present embodiment incorporates an elastic member 4b made of a metal (for example, copper or copper alloy) having a C-shaped outer shape and a contact piece 4ba at the C-shaped open end. The elastic member 4b can be formed by bending a plate material. The elastic member 4b inserts the fixing screws 8bc and 8bc into the screw holes 4b1 and 4b1 provided in the base 4bc of the elastic member 4b, and is screwed to the body 4 side provided on the back side of the cover body 1. The fixing screw 8bc fixes a terminal receiving spring 4d arranged on the back side of the body body 4. The terminal receiving spring 4d is configured to be able to come into contact with a round pin-shaped ground terminal (not shown) protruding from the socket on the wall surface side (see FIGS. 1, 8, and 12). The terminal receiving spring 4d can be formed by bending a plate material made of metal (for example, copper or copper alloy). Further, the terminal receiving spring 4d is disposed on the back side of the body body 4, and is electrically connected to a grounding member 4g made of metal (for example, copper, copper alloy, etc.) having a C-shaped outer shape. The ground member 4g extends from the base end piece 4gc through which the insertion hole 4g1 through which the ground terminal can be inserted is penetrated, the side end part 4gb extending from both ends of the base end piece 4gc, and the side end part 4gb. The fixed piece 4ga is integrally formed. The ground member 4g can be formed by bending a plate material made of metal (for example, copper or copper alloy). The grounding member 4g is provided with screw holes 4g2 that are screwed into the fixing screws 8bc in the fixing pieces 4ga that are the tip of the grounding member 4g. The grounding member 4g having a C-shaped outer shape has a fixing piece 4ga and a terminal receiving spring 4d at one end portion screwed together by a fixing screw 8bc.

  In addition, the outlet 10 is installed so that the side end portion 4gb of the grounding member 4g is exposed on the surface in the cutout portion 4f1 provided on the side surface of the cylindrical portion 4f protruding to the back side of the body body 4 (FIG. 1). FIG. 4, FIG. 8 to FIG. 10, and FIG. 12). The ground member 4g can also electrically connect a ground terminal portion (not shown) provided on the socket side of the wall surface to the side end portion 4gb of the ground member 4g.

  In addition, the outlet 10 includes a pair of connection terminals 4c and 4c that are inserted into socket insertion openings provided on the wall side. Each connection terminal 4c consists of a cylindrical metal pin, and is fixed to the body body 4 by integral molding with the body body 4 (see FIG. 11). The screw 8ca is fixed to the connection terminal 4c on the body body 4 side through the power supply terminal 4e inside the outlet 10. The power supply terminal 4e is connected to a terminal portion 4e1 provided with a screw hole 4e1a through which the screw 8ca is inserted, an S-shaped portion 4e2 connected to an end portion of the terminal portion 4e1, and an end portion of the S-shaped portion 4e2. Terminal piece 4e3. The power supply terminal 4e can be formed by bending a metal plate (for example, copper or copper alloy).

  In addition, the outlet 10 includes a terminal receiving portion 4 i that is electrically connected to the terminal of the power plug inside the outlet 10. The terminal receiving portion 4i includes a pair of opposed semi-cylindrical terminal receiving spring portions 4i1, 4i1, a holding piece 4i3 that holds each terminal receiving spring portion 4i1, and a terminal piece 4i2 that extends from the holding piece 4i3. ing. The terminal receiving portion 4i can be formed by bending a metal (for example, copper or copper alloy) plate material. The terminal receiving portion 4i is fixed by screwing the screw 8ia to the body body 4.

  The cover body 1 includes a circular recess 1i at the center on the other end side in the longitudinal direction when viewed from the front. The hollow portion 1 i constitutes a bottomed cylindrical portion 1 ia that protrudes on the back side of the cover body 1. The hollow portion 1i includes a through hole 1ib whose front view is circular on the bottom surface of the bottomed cylindrical portion 1ia (see FIGS. 1, 2, 3, and 12). In the outlet 10, when the cover body 1 is viewed from the front, a circular protective cover 6 aa whose outer shape is similar to the hollow portion 1 i and slightly smaller than the hollow portion 1 i is inserted into the hollow portion 1 i of the cover body 1 from the front side of the cover body 1. (See FIGS. 6, 7, and 9 to 12). The protective cover 6aa has a bottomed cylindrical shape that can be protected by covering the indicator lamp 6a disposed inside the outlet 10.

  Further, the cover body 1 has a recess 1c that is recessed from the front side where the terminal of the power plug in the cover part 1a is inserted, and protrudes on the back side opposite to the front side of the cover part 1a. As shown in FIG. 2, the cover body 1 includes a shaft portion 1 b that protrudes from the center of the outer bottom surface to the back side of the cover portion 1 a on the outer bottom surface of the recess 1 c. Further, the cover body 1 has a pair of regulating walls 1d and 1d protruding symmetrically around the shaft portion 1b disposed at the center portion on the outer bottom surface of the recess 1c. The regulation wall 1d is disposed in the vicinity of the terminal insertion port 1aa. The pair of regulating walls 1d and 1d are disposed in the vicinity of the pair of terminal insertion ports 1aa and 1aa around the axis of the shaft portion 1b (see FIGS. 2 and 3). Further, the regulation wall 1d has a rectangular shape protruding from the outer bottom surface of the recess 1c. Furthermore, the cover body 1 is provided with a separation wall 1k that protrudes along the outer periphery of the outer bottom surface from the outer bottom surface of the recess 1c on the back surface side of the cover portion 1a and is formed of a part of a ring. The separation wall 1k is preferably provided in the outlet 10 in order to spatially separate the space side on which the indicator lamp 6a and the like are mounted and the space side on which the door body 2 is disposed.

  As shown in FIG. 5, the door body 2 has an insertion hole 2 b into which the shaft portion 1 b of the cover body 1 is inserted at the center of the door body 2. The door body 2 is pivotally supported by the shaft portion 1b. The door body 2 includes a pair of door portions 2a and 2a that close the pair of terminal insertion ports 1aa and 1aa, and a pair of door insertion ports 1aa and 1aa that are arranged adjacent to each door portion 2a and that open the pair of terminal insertion ports 1aa and 1aa, respectively. Through-hole portions 2c and 2c are provided. The door body 2 has a pair of through-hole portions 2c and 2c arranged symmetrically with the insertion hole 2b at the center as the center in plan view. The through-hole 2c has a shape in which a part of the fan-shaped part on the side of the shaft 1b is cut out from a fan-shaped part having a circular shape around the insertion hole 2b through which the shaft 1b is inserted in plan view. The door body 2 is symmetrical with the insertion hole 2b in the center as a center, and the door body 2 is adjacent to the through-hole portion 2c along the rotation direction in which the door body 2 rotates about the axis of the shaft portion 1b. The door part 2a is arranged.

  The door body 2 rotates around the axis of the shaft portion 1b of the cover body 1 when the terminal of the power plug is inserted into the terminal insertion port 1aa, and the terminal is inserted from the position where the door portion 2a closes the terminal insertion port 1aa. The opening 1aa can be opened and the terminal of the power plug can be rotated to a position where it can be inserted into the through hole 2c. In addition, the door body 2 has corresponding restriction walls 1d and 1d inserted in the pair of through-hole portions 2c and 2c, respectively. Therefore, in the door body 2, the rotation of the shaft portion 1 b around the axis of the cover body 1 is restricted by the restriction wall 1 d of the cover body 1. In other words, the door body 2 can be rotated between a closed position where the door 2a closes the terminal insertion opening 1aa and a position where the terminal of the power plug opens the terminal insertion opening 1aa through which the through hole 2c can be inserted. It is said. The door 2a is rotated about the axis of the shaft 1c so that the terminal of the power plug can be inserted easily, so that the door 2a is inserted in the direction of insertion of the terminal of the power plug along the direction of rotation of the door 2. An inclined surface that is inclined to the back side is provided. Further, the door body 2 is provided with a protruding portion 2aa at the boundary between the door portion 2a and the through-hole portion 2c on the back side of the inclined surface of the door portion 2a. The outlet 10 can suppress, for example, a foreign object with a sharp tip from being easily inserted into the outlet 10 by the protrusion 2aa.

  The outlet 10 of the present embodiment has a body body 4 provided with a door body receiving portion 4a. The door body receiving portion 4a supports the door body 2 from the side opposite to the cover body 1 and suppresses the door body 2 from coming out of the shaft portion 1b. When the body body 4 and the cover body 1 are engaged with each other, the body body 4 is configured such that the door body receiving portion 4a comes into contact with the back side of the door body 2 and can hold the door body 2. In addition, the outlet 10 according to the present embodiment includes a printed wiring board 5a that can come into contact with the shaft portion 1b of the cover body 1. The printed wiring board 5a is mounted with an indicator lamp 6a and an electronic component of a receiver that is electrically connected to the indicator lamp 6a. In addition, the printed wiring board 5a is mounted with an electronic component for constituting a control circuit that performs control so as to perform electrical connection and disconnection between the socket side of the wall surface and the electrical appliance side. Furthermore, the printed wiring board 5a is mounted with various electronic components such as a lightning surge protection device, a cylindrical fuse 6b, a temperature fuse 6c for suppressing abnormal heat generation, and a relay 6d for preventing leakage. The printed wiring board 5a is formed in a rectangular flat plate shape. The printed wiring board 5a is mounted with electronic components such as an indicator lamp 6a, a capacitor 6b, a resistor 6c, and a relay 6d. A wiring pattern (not shown) is formed on the printed wiring board 5a so that the connection terminal 4c side connected to the socket and the terminal receiving part 4i side connected to various electronic components can be electrically connected. It is composed. Moreover, the indicator lamp 6a mounted on the printed wiring board 5a can be constituted by a light emitting diode. The indicator lamp 6a is, for example, in a control state in which the outlet 10 is electrically connected between the electronic device side and the socket side of the wall surface by distinguishing between lighting and blinking of red light emission and green light emission. The status etc. can be displayed.

  The protective cover 6aa that covers the indicator lamp 6a not only protects the indicator lamp 6a, but also functions as an operation unit that performs operations to supply power to the receiver and the control circuit of the outlet 10 itself and to stop power supply. ing. When the protective cover 6aa is pressed from the front side of the cover body 1, the front end portion 6ba of the protective cover 6aa inside the outlet 10 presses the switch 6e mounted on the printed wiring board 5a (see FIG. 12). ). The switch 6e is electrically connected to a receiver, a control circuit, and the like so that power can be supplied to and stopped from the receiver and the control circuit of the outlet 10 itself. As the switch 6e, for example, a push lock switch that is a position holding type switch that is turned on and off each time it is pressed can be used. In the outlet 10, a return spring 6f is disposed between the protective cover 6aa and the bottomed cylindrical portion 1ia of the cover body 1 so that the pressed protective cover 6aa returns to its original position.

  Each connection terminal 4c is electrically connected to each power supply terminal 4e. The power supply terminal 4e is electrically connected to the printed wiring board 5a side by inserting a terminal piece 4e3 of the power supply terminal 4e into a connection hole 5e provided in the printed wiring board 5a.

  Further, in the outlet 10, the terminal of the power plug is electrically connected to the terminal receiving part 4i by inserting the through hole 2c of the door 2 from the terminal insertion port 1aa of the outlet 10. The terminal receiving portion 4i is electrically connected to the printed wiring board 5a side by inserting the tip of the terminal piece 4i2 extending from the holding piece 4i3 into the through hole 5f provided in the printed wiring board 5a. . The printed wiring board 5a is provided with an opening 5g capable of accommodating the terminal receiving spring portion 4i1 of the terminal receiving portion 4i. Moreover, although the terminal receptacle 4i and the connection terminal 4c are electrically connected via the printed wiring board 5a, the outlet 10 is not directly electrically connected.

  In the rectangular flat printed wiring board 5a, the front side of the printed wiring board 5a and the shaft portion 1b of the cover body 1 are in contact with each other at one end in the longitudinal direction (see FIGS. 11 and 12). The door body 2 to be inserted into the shaft portion 1 b is supported by a pair of door body receiving portions 4 a and 4 a that protrude from the inner bottom surface side of the body body 4. The door body 2 has an X-shape in which the contact surface 2ab of the door body 2 extends from the center portion where the insertion hole 2b of the door body 2 is provided on the back side of the door body 2. That is, the door body 2 is provided with an X-shaped projecting portion 2d at the center of the back side of the door body 2, and the surface of the projecting portion constitutes the contact surface 2ab. In the door body 2, the X-shaped contact surface 2 ab and the door body receiving portion 4 a protruding from the inner bottom surface of the body body 4 are in contact. In the outlet 10 of the present embodiment, the force applied to the door body 2 is received on the door body receiving portion 4a side when the terminal presses the door portion 2a of the door body 2 when the terminal of the power plug is inserted. The door body receiving portion 4a is formed of a pair of parallel plate-like bodies that are integrally formed with the body body 4 and protrude from the inner bottom surface side of the body body 4. The door body receiving portion 4a has a pair of plate-like bodies inserted through the openings 5g and 5g of the printed wiring board 5a. The door body receiving portion 4a is arranged so that the opposing surfaces where the pair of plate-like bodies are opposed are along one side of each of the rectangular openings 5g, 5g. The outlet 10 receives a force applied to the door body 2 as a force in the compression direction to the door body receiving portion 4a. Therefore, the outlet 10 does not need to pivot the door body 2 on the cover body 1 using a metal pin having a higher strength than that of the resin, and the outlet 10 has a relatively simple configuration. Is possible.

  In other words, the outlet 10 according to the present embodiment pivotally supports the door body 2 by a shaft portion 1b provided integrally with the cover body 1 instead of a metal pin that pivotally supports the door body 2. The outlet 10 of the present embodiment can simplify the assembly process by reducing the number of parts of the outlet 10 by the amount of metal pins or the like. Therefore, the outlet 10 of this embodiment can also reduce the manufacturing cost of the outlet 10 as a whole. Further, the door body 2 includes the X-shaped contact surface 2ab, so that the door body 2 rotates as compared with the case where the entire rear surface side of the door body 2 is in contact with the door body receiving portion 4a. It is possible to disperse the force applied to the door body 2 while reducing the frictional force generated between the door body 2 and the door body receiving portion 4a. Such a door body 2 can be formed relatively easily by injection molding using an electrically insulating resin material (for example, urea resin). Note that the door body receiving portion 4a is not limited to the shape of a pair of plate-like bodies, and may be various shapes such as a cylindrical body protruding from the body body 4 side. The door body receiving portion 4 a is formed so as to protrude from the inner bottom surface side of the body body 4 by integral molding with the body body 4. Thereby, the door receiving part 4a can form a structure with high mechanical strength with respect to the press from the door 2 comparatively easily. Further, the door body receiving portion 4a is not limited to the case where the door body receiving portion 4a and the body body 4 are formed as long as the door body receiving portion 4a can be strong enough to be pressed from the door body 2. Can be formed separately.

  Further, the outlet 10 of the present embodiment includes a spring body 3 between the cover body 1 and the door body 2 and having a cylindrical outer shape and spirally wound. The spring body 3 is arranged so as to be extrapolated to the shaft portion 1 b of the cover body 1. The spring body 3 is engaged by inserting one end of the spring body 3 into a notch hole 1g provided in the vicinity of the shaft part 1b of the cover body 1 and hooking it on a locking piece (not shown) inside the notch hole 1g. It has stopped (refer FIG. 2, FIG. 3). In addition, the spring body 3 is inserted from the front side of the door body 2 into the through hole 2g provided in the vicinity of the insertion hole 2b of the door body 2 at the other end of the spring body 3 and hooked on the back side of the door body 2. It is locked (see FIGS. 1, 2 and 5). Thereby, the spring body 3 biases the door body 2 around the axis of the shaft portion 1b so that the door portion 2 closes the terminal insertion port 1aa. In the outlet 10 of the present embodiment, the spring body 3 is provided by being extrapolated to the shaft portion 1b between the cover body 1 and the door body 2, and the space inside the outlet 10 is effectively used. The outlet 10 uses a leaf spring which is arranged between the cover body 1 and the printed wiring board 5a and urges the door body 2 around the axis of the shaft portion 1b instead of the spirally wound spring body 3. May be configured. Therefore, the outlet 10 is not limited to the configuration of the spring body 3 wound spirally to urge the door body 2 around the axis of the shaft portion 1b so that the door portion 2a closes the terminal insertion port 1aa. . Further, the spring body 3 is not limited to the one disposed between the cover body 1 and the door body 2.

  The outlet 10 includes an engagement claw 1h that engages the cover body 1 with the body body 4 side. A pair of engaging claws 1h are provided as a set along the short direction of the lower side of the cover body 1 (the lower side of the paper surface of FIG. 2 and the right side of the paper surface of FIG. 3). The engaging claw portion 1h is formed in a tapered shape in which the tip end portion is tapered as it is away from the cylindrical frame portion 1a2 and the inner bottom surface side of the bottomed square cylindrical cover body 1. The cover body 1 can be formed by integrally molding the frame portion 1a2 and the engaging claw portion 1h.

  Further, the outlet 10 is attached to the cylindrical frame body portion 4a2 in the bottomed rectangular cylindrical body body 4 along the short side direction of the lower side of the body body 4 (the right side of the paper surface in FIGS. 1 and 4). 4 is provided with a pair of side protrusions 4h and 4h protruding outward. Each side protrusion 4h is provided with an engagement hole (not shown) that engages with a plurality of (here, three) engagement claws 1h of the cover body 1. The engagement hole is formed in a size that can be engaged with a set of three engagement claws 1 h of the cover body 1. The side protrusion 4h is fixed to the frame body portion 4a2 of the body body 4 having a bottomed rectangular tube shape. The side protrusion 4h of the body body 4 is configured to be elastically deformable with respect to the frame body portion 4a2. The body body 4 can be formed by integrally molding the frame body portion 4a2 and the side protrusion 4h. In other words, the side protrusion 4h has a C-shaped outer shape, and the engagement hole is formed in a portion protruding from the frame body portion 4a2 and exposed to the outside. The outlet 10 inserts the engaging claw portion 1h protruding inward from the frame portion 1a2 side of the cover body 1 into the engaging hole of the side protruding piece 4h protruding from the frame portion 4a2 of the body body 4.

  The cover body 1 positions and fixes the cover body 1 to the body body 4 side by engaging the engagement claw portion 1h and the engagement hole corresponding to the engagement claw portion 1h, respectively. That is, the outlet 10 is configured by fitting the cover body 1 and the body body 4 together. The cover body 1 is provided with cylindrical projecting portions 1e and 1e at the corners on the upper side (left side of the paper in FIG. 3) of the four rectangular corners when viewed from the back side. The body body 4 includes a columnar protrusion 4j that protrudes from the inner bottom surface of the body body 4 at a corner corresponding to the protrusion 1e of the cover body 1. A screw insertion hole 4e1 through which the screw portion 7f1 of the screw 7f is inserted from the back side of the body body 4 is provided in the projecting portion 4j (see FIGS. 1 and 8). The protruding portion 1e of the cover body 1 is provided with a screw engaging hole 1e1 into which the screw portion 7f1 of the screw 7f protruding from the screw insertion hole 4e1 is screwed. The outlet 10 is configured such that the protruding portion 1e of the cover body 1 and the protruding portion 4j of the body body 4 are brought into contact with each other and can be screwed by a screw 7f inserted from the back side of the body body 4. . In the outlet 10, the cover body 1 and the body body 4 are screwed together by a screw 7f. The outlet 10 inserts the screw 7f into the screw insertion hole 4e1 from the back side of the body body 4, and is screwed into the screw insertion hole 1e1 of the projecting portion 1e of the cover body 1, whereby the cover body 1 and the body body 4 Are fixed together.

  The outlet 10 of the present embodiment in which the cover body 1 and the body body 4 are fixed has a box shape as shown in FIGS. In addition, the outlet 10 is symmetrical with the left side view of the cover body 1 shown in FIG. 7 and the right side view (not shown). In addition, the outlet 10 is symmetrical with a bottom view of the outlet 10 shown in FIG. 9 and a plan view (not shown).

  The cover body 1 uses a resin material (for example, urea resin) as an integrally molded product including a cover portion 1a through which the terminal insertion port 1aa is provided and a shaft portion 1b protruding from the back side of the cover portion 1a. Can be formed. The cover body 1 can be formed as an integrally molded product by injection molding in which an electrically insulating resin material heated and melted is injected and injected into a mold. Similarly, the body body 4 can be formed as an integrally molded product by injection molding in which an electrically insulating resin material heated and melted is injected and injected into a mold and cooled and solidified.

  In addition, the outlet 10 of the present embodiment is not limited to the connection pin 4c being a cylindrical pin, but may have another shape such as a flat blade. Furthermore, the outlet 10 according to the present embodiment is not limited to the one in which the two round terminal insertion openings 1aa and 1aa into which the pair of pins of the power plug are inserted, and other shapes of plugs such as flat blades. A blade may be inserted. Further, the outlet 10 has a grounding electrode terminal insertion port for inserting a grounding electrode terminal on the electric appliance side in addition to the terminal insertion port 1aa as long as the door body 2 is not obstructed from rotating around the axis of the shaft portion 1b (see FIG. (Not shown).

  Hereinafter, the assembly process of the outlet 10 of the present embodiment will be described.

  First, assembly on the cover body 1 side of the outlet 10 will be described.

  In the outlet 10 of the present embodiment, the other end of the spring body 3 that is cylindrical and spirally wound is inserted into the through hole 2g near the insertion hole 2b in the center of the door 2 from the front side of the door 2. Insert and hook on the back side of the door body 2 to lock. Next, in the outlet 10, the spring body 3 and the door body 2 are externally attached to the shaft portion 1 b projecting from the center portion of the outer bottom surface of the recess 1 c on the back side of the cover body 1 on the cover body 1 side. Inserted. The outlet 10 is locked by hooking one end of the spring body 3 to a locking piece in the notch hole 1 g provided in the vicinity of the shaft portion 1 b of the cover body 1. At this time, the door body 2 inserts the regulation wall 1 d of the cover body 1 into the through hole portion 2 c of the door body 2. The door body 2 is urged around the axis of the shaft portion 1b by the spring body 3, and the through hole portions 2c, 2c provided in the door body 2 and the terminal insertion ports 1aa, 1aa provided in the cover body 1 are shaft portions 1b. It is constituted so as to deviate by a predetermined angle (for example, 30 °) around the axis. Therefore, when the terminal of the power plug is not inserted, the outlet 10 is in a state where the door 2a is closed with the terminal insertion port 1aa, and suppresses erroneous insertion of foreign matters other than the terminal from the terminal insertion port 1aa. Is possible.

  Next, assembly on the body body 4 side of the outlet 10 will be described.

  In the outlet 10 of this embodiment, the connection terminal 4c is formed integrally with the body body 4 on the back side of the body body 4 by injection molding. In the outlet 10, the power supply terminal 4 e is fixed to the connection terminal 4 c on the body body 4 side from the front side of the body body 4 by screws 8 ca on the body body 4 side. Further, the outlet 10 has a grounding member 4g disposed in advance on the back side of the body body 4 via a terminal receiving spring 4d on the body body 4 side, and the grounding member 4g is disposed from the front side of the body body 4 via the elastic member 4b. Are fixed using a fixing screw 8bc. Furthermore, the outlet 10 fixes the terminal receiving part 4i to the body body 4 from the front side of the body body 4 by the fixing screw 8ia on the body body 4 side. Thus, the body body 4 is in a state in which the contact piece 4ba of the elastic member 4b, the terminal piece 4e3 of the power supply terminal 4e, and the terminal piece 4i2 of the terminal receiving portion 4i protrude from the inner bottom surface side of the body body 4.

  In this state, the outlet 10 places the printed wiring board 5a on which the electronic components are previously mounted on the body body 4 side. The outlet 10 holds the printed wiring board 5 a with a rib 4 k protruding from the inner bottom surface side of the body body 4. Here, in the printed wiring board 5a, the terminal piece 4e3 of the power feeding terminal 4e is inserted into the connection hole 5e of the printed wiring board 5a. Further, in the printed wiring board 5a, the terminal piece 4i2 of the terminal receiving portion 4i is inserted into the through hole 5f of the printed wiring board 5a. In the printed wiring board 5a, one contact piece 4ba of the elastic member 4b is inserted into the opening hole 5h of the printed wiring board 5a. The other contact piece 4ba of the elastic member 4b is disposed outside the outer shape of the printed wiring board 5a.

  In the outlet 10, in order to electrically connect the terminal piece 4e3 inserted into the connection hole 5e of the printed wiring board 5a and the wiring pattern on the printed wiring board 5a side, the terminal piece 4e3 and the wiring pattern are soldered. Similarly, in the outlet 10, in order to electrically connect the terminal piece 4i2 inserted into the through hole 5f of the printed wiring board 5a and the wiring pattern on the printed wiring board 5a side, the terminal piece 4i2 and the wiring pattern are connected. Soldering etc.

  Finally, combining the cover body 1 side and the body body 4 side of the outlet 10 will be described.

  The outlet 10 is engaged with the engaging claw portion 1 h of the cover body 1 and the engaging hole of the side protrusion 4 h of the body body 4. In the outlet 10, the pair of door body receiving portions 4a protruding from the inner bottom surface of the body body 4 supports the door body 2 from the side opposite to the cover body 1, so that the door body 2 does not come out of the shaft portion 1b. The cover body 1 side and the body body 4 side are combined. Further, the outlet 10 is screwed to the cover body 1 and the body body 4 by a screw 7f from the back side of the body body 4 with the contact piece 4ba of the elastic member 4b protruding from the opening 1cb of the cover body 1. Is done.

  In the outlet 10 of the present embodiment formed in this way, when the terminal of the power plug on the electric appliance side is not inserted, foreign matter is erroneously introduced into the outlet 10 from the outside of the outlet 10 via the terminal insertion ports 1aa and 1aa. Insertion can be suppressed by the door body 2 in which the door portions 2a and 2a block the terminal insertion ports 1aa and 1aa.

  When the outlet 10 of the present embodiment is connected to the electric appliance side, the terminal of the power plug is inserted into the terminal insertion port 1aa to press the door 2a that closes the terminal insertion port 1aa. The outlet 10 rotates the door body 2 against the elastic force of the spring body 3 when the terminal comes into contact with the inclined surface of the door portion 2c inclined to the back side in the insertion direction of the terminal of the power plug as the terminal is inserted. A force works in the moving direction. When the terminal contacts the door portion 2a and the door body 2 is rotated, the outlet 10 is located when the through-hole portions 2c and 2c provided in the door body 2 and the terminal insertion port 1aa provided in the cover body 1 match. The terminal can be inserted and connected to a terminal receiving spring portion 4i1 housed in the outlet 10. Further, in the outlet 10, when the terminal of the power plug is pulled out from the terminal insertion port 1aa, the door body 2 is rotated around the axis of the shaft portion 1b by the elastic force of the spring body 3, and the door portion 2a is turned to the terminal insertion port 1aa. Occlude. Therefore, the outlet 10 of the present embodiment can suppress erroneous insertion of foreign matters with a relatively simple structure.

DESCRIPTION OF SYMBOLS 1 Cover body 1a Cover part 1aa Terminal insertion port 1b Shaft part 2 Door body 2a Door part 2c Through-hole part 3 Spring body 4 Body body 4a Door body receiving part 10 Outlet

Claims (1)

A cover body integrally formed with a cover portion through which a terminal insertion port for inserting a terminal of the power plug is inserted and a shaft portion protruding to the back side opposite to the front side into which the terminal is inserted in the cover portion;
The terminal is inserted into the terminal insertion port, and includes a door portion that is pivotally supported by the shaft portion and closes the terminal insertion port, and a through-hole portion that is arranged adjacent to the door portion and opens the terminal insertion port. A door that pivots around the axis of the shaft part at times and allows the terminal to be inserted into the through-hole part,
A body body including a door body receiving portion that supports the door body from the side opposite to the cover body and suppresses the door body from coming out of the shaft portion;
An outlet comprising: a spring body that is arranged between the cover body side and the body body side and biases the door body around the axis so that the door portion closes the terminal insertion port.

Images