JP5888507B2 - Outlet - Google Patents

Description

  Embodiments described herein relate generally to an outlet that can connect a ground wire.

  Conventionally, for example, an outlet embedded in a wall surface includes an outlet with an earth terminal capable of connecting an earth wire of an electric device.

  In such an outlet, a ground wire insertion port is provided on the front surface of the outlet body, a leaf spring that is a locking spring for connecting the ground wire is disposed in the outlet body, and a door body is provided at the ground wire insertion port. It can be opened and closed.

  The door body comes into contact with the leaf spring by turning to the open position and elastically deforms the leaf spring, whereby the ground wire can be attached to and detached from the leaf spring.

  Since the door body in the open position elastically deforms the leaf spring and is urged toward the closing direction by the reaction force of the leaf spring, the door body rotates in the closing direction when the hand is released from the door body.

Japanese Patent No. 3463467

  In conventional outlets, when the ground wire is attached / detached, the door body closes unless the door body is held in the open position. Therefore, hold the door body in the open position with one hand and ground with the other hand. There is a problem that it is difficult to attach and detach the ground wire because an operation for attaching and detaching the wire is required.

  The problem to be solved by the present invention is to provide an outlet capable of easily connecting a ground wire.

The outlet of the embodiment includes an outlet body, a leaf spring, and a door body. The outlet body has a ground wire insertion port. The leaf spring is disposed in the outlet body and holds the ground wire inserted from the ground wire insertion port. The door body is supported to be rotatable between a closed position for closing the ground wire insertion port with respect to the outlet body and an open position for turning into the outlet body to open the ground wire insertion port , A contact portion is provided that enables the ground wire to be attached and detached by elastically deforming the leaf spring by contact with the leaf spring by turning the door portion to the open position . Door body, the boundary of the middle of the neutral point of the rotation range of the door portion, while being biased toward the opening direction by a leaf spring, if the door unit is in an open rotation-side, the door portion is closed rotation-side If it is, it will be urged | biased by the leaf | plate spring toward the closing direction .

  According to the present invention, by rotating the door body to the open position, the leaf spring is elastically deformed by contact with the plate spring to allow the ground wire to be attached and detached, and at the open position, the door body is moved by the plate spring. Since the door body is biased toward the opening direction, the open state of the door body and the attachable / detachable state of the ground wire can be maintained even when the door body is released, and the ground wire can be easily attached and detached.

It is sectional drawing of the outlet socket which shows 1st Embodiment, (a) is sectional drawing of the closed state of a door body, (b) is sectional drawing of the open state of a door body. The door body of the same outlet is shown, (a) is a left side view, (b) is a front view, (c) is a right side view, (d) is a rear view, and (e) is a bottom view. The outlet is shown, (a) is a front view, (b) is a side view, and (c) is a sectional view. The door body of the outlet socket which shows 2nd Embodiment is shown, (a) is a right view, (b) is a rear view, (c) is a bottom view.

  Hereinafter, a first embodiment will be described with reference to FIGS. 1 to 3.

  FIG. 3 shows an embedded outlet 10. The outlet 10 is attached to a frame-like support 11 for attaching to an embedding box embedded in a wall surface.

  The outlet 10 has an outlet body 16 configured by combining a case 14 on the back side and a cover 15 on the front side. The outlet body 16 is formed in a vertically long shape having a predetermined dimension defined by the JIS standard.

  On the back of the case 14, a power line connection hole (not shown) for inserting and connecting a power line wired to the embedded box and a ground for inserting and connecting a ground line wired to the embedded box A line connection hole 18 and the like are formed.

  The cover 15 has a plug blade insertion port 20 for inserting a pair of plug blades on the voltage electrode side of a plug of an electric device connected to the outlet 10 and a ground pin insertion port 21 for inserting a ground pin in two pairs at the top and bottom. Two sets are formed.

  At the bottom of the front surface of the cover 15, two ground wire insertion ports 22 for inserting the ground wires of the electrical equipment connected to the outlet 10 are formed side by side, and the door body 23 can be opened and closed at each ground wire insertion port 22. Is arranged.

  In addition, a plug blade receiving terminal (not shown) connected to a pair of plug blades inserted into each pair of plug blade insertion ports 20 is disposed in the outlet body 16 and a ground pin is inserted. An earth terminal 26 connected to the earth pin inserted into the port 21 and the earth wire inserted into each earth wire insertion port 22 is disposed.

  The ground terminal 26 is formed with a pin receiving portion 27 to be connected by sandwiching a ground pin inserted into each ground pin insertion port 21 and, as shown in FIG. A ground wire connecting portion 28 is formed which is a fixed ground terminal portion disposed on the upper side of the insertion area in the outlet body 16 into which is inserted.

  Further, as shown in FIG. 1, a leaf spring accommodating portion 16a is formed at the bottom of the outlet body 16, and earth wires inserted from the respective earth wire insertion ports 22 are connected to the ground terminals 26 in the leaf spring accommodating portion 16a. A leaf spring 31 is disposed as a locking spring, which is a movable earth terminal that is sandwiched and held between the earth wire connecting portion 28 and the earth wire connecting portion 28. That is, the leaf spring 31 is arranged below the insertion area in the outlet body 16 into which the ground wire is inserted from each ground wire insertion port 22.

  The leaf spring 31 is disposed in the leaf spring accommodating portion 16a and is positioned and held, and protrudes from the front end of the base portion 32 toward the upper ground wire connecting portion 28 via the curved portion 33. The movable part 34 is provided. At the tip of the movable portion 34, an edge-shaped locking portion 35 that bites into the ground wire and prevents it from coming off is formed. At least in the lateral width region of the movable portion 34, a contact region that faces the ground wire connection portion 28 and connects to the ground wire, and a contact that allows the door body 23 to come into contact with the side portion of the ground wire connection portion 28. And having a region. The leaf spring 31 is disposed between the leaf spring accommodating portion 16a and the ground wire connecting portion 28 in a state where the movable portion 34 is elastically deformed downward from an unloaded state, and is a reaction force against the elastic deformation. Thus, the movable portion 34 is biased toward the upper ground wire connecting portion 28.

  In addition, support members 38 that rotatably support the door body 23 are arranged on both sides of the insertion area in the outlet body 16 where the ground wire is inserted from each ground wire insertion port 22 at the bottom of the outlet body 16. Has been. The support member 38 has an arcuate groove 39 centering on the rotation center O of the door body 23. One or both of the support members 38 on both sides may be provided integrally with the outlet body 16 such as the case 14 or the cover 15.

  As shown in FIGS. 1 and 2, the door body 23 has a vertically long door portion 42 that can close the ground wire insertion opening 22, and a lever portion 43 that protrudes from the back surface of the door portion 42. doing.

  An operation part 44 is formed at the lower part of the door part 42 for hooking a finger to operate the door body 23 to be opened and closed.

  On both side surfaces of the lever portion 43, arcuate rotation guide portions 45 project from the rotation center O of the door body 23. The rotation guide portions 45 on both sides are fitted into the groove portions 39 of the support members 38 on both sides, and the door body 23 is supported on the outlet body 16 via the support members 38, and the rotation guide portions 45 are formed on the groove portions 39. , The door body 23 is rotated around the rotation center O. The rotation range of the door body 23 is located on the front surface of the outlet body 16 so as to close the ground wire insertion opening 22 and the lower end of the door section 42 is located on the cover 15 portion constituting the lower edge of the ground wire insertion opening 22. Between the closed position where it abuts and the open position where it is located in the outlet body 16 and opens the ground wire insertion port 22 and the door portion 42 abuts the portion of the cover 15 constituting the upper edge of the ground wire insertion port 22. It is considered as a range.

  The lever portion 43 protrudes from the back surface of the door portion 42 in a substantially triangular shape, and a contact portion 46 that contacts the movable portion 34 of the leaf spring 31 is formed at the tip thereof. Then, by rotating the door body 23 to the open position, the contact portion 46 presses the movable portion 34 of the leaf spring 31 and elastically deforms it downwardly away from the ground wire connection portion 28, so that the movable portion 34 and the ground wire A gap of a size that allows the ground wire to be inserted and removed can be formed between the connecting portion 28 and the connecting portion 28.

  In a state where the movable portion 34 is elastically deformed by the contact portion 46, the contact portion 46 receives a reaction force against the elastic deformation from the movable portion 34. At this time, the direction in which the door body 23 receives the reaction force from the movable portion 34 and turns is reversed at the neutral point in the middle of the rotation range of the door body 23. That is, the contact portion 46 of the door body 23 and the door body are defined by a neutral imaginary line L1 formed by the contact portion 46 at the neutral point in the middle of the rotation range of the door body 23 and the rotation center O of the door body 23. If the imaginary line L2 formed by the rotation center O of 23 is on the open rotation side, it receives a reaction force biased from the movable portion 34 toward the opening direction, and if it is on the closed rotation side, the movable portion 34 Receives a reaction force biased toward the closing direction. The relationship in which the direction in which the door body 23 receives the reaction force from the movable part 34 and rotates in the reverse direction at the neutral point in the middle of the rotation range of the door body 23 is the rotation of the door body 23. It can be arbitrarily set depending on the position of the moving center O and the contact portion 46, the shape and position of the movable portion 34 of the leaf spring 31, and the like.

  As shown in FIG. 1 (a), in the state where the ground wire is not connected to the outlet 10 and the door body 23 is located at the closed position located on the front surface of the outlet body 16, the ground wire is connected. When connecting, the door body 23 is rotated to the open position.

  That is, by placing a finger on the operation portion 44 of the door body 23 and operating the operation portion 44 to be pulled up toward the front side, the rotation guide portion 45 of the door body 23 has an arc along the groove 39 of the support member 38. The door body 23 rotates in the opening direction around the rotation center O.

  As the door body 23 rotates in the opening direction, the abutting portion 46 presses the movable portion 34 of the leaf spring 31 and elastically deforms downwardly away from the ground wire connecting portion 28.

  If the finger is released from the operation unit 44 before the virtual line L2 formed by the contact portion 46 of the door body 23 and the rotation center O of the door body 23 exceeds the neutral virtual line L1 (neutral point), Since the line L2 is closer to the closing rotation side than the neutral virtual line L1, the door body 23 is forcibly rotated back to the closing position by the reaction force urged from the movable part 34 in the closing direction.

  Further, the door body 23 is rotated in the opening direction, and when the virtual line L2 formed by the contact portion 46 of the door body 23 and the rotation center O of the door body 23 reaches the neutral virtual line L1 (neutral point), The movable part 34 is in the most elastically deformed state.

  As shown in FIG. 1B, the door body 23 is further rotated in the opening direction, and a virtual line L2 formed by the contact portion 46 of the door body 23 and the rotation center O of the door body 23 is a neutral virtual line L1. By moving over the (neutral point) to the opening rotation side, the rotation direction for biasing the door body 23 by the reaction force of the movable portion 34 is reversed from the closing direction to the opening direction. Accordingly, the door body 23 is forcibly rotated to the open position by the reaction force urged from the movable portion 34 toward the open direction. When the door body 23 rotates to the open position, the movable portion 34 returns slightly upward from the position where it is most elastically deformed.

  Therefore, even if the finger is removed from the operation unit 44, the open state of the door body 23 is maintained, and a gap of a size that allows the ground wire to be inserted / removed is provided between the movable unit 34 and the ground wire connection unit 28. Maintained.

  Then, in a state where the door body 23 is held in the open position located in the outlet body 16, the ground wire of the electric device is inserted between the movable portion 34 and the ground wire connecting portion 28 from the ground wire insertion port 22.

  After that, by placing a finger on the operation part 44 of the door body 23 and operating the operation part 44 to pull it down, the rotation guide part 45 of the door body 23 is arcuate along the groove 39 of the support member 38. The door body 23 rotates in the closing direction around the rotation center O.

  By the rotation of the door body 23 in the closing direction, the contact portion 46 presses the movable portion 34 of the leaf spring 31 and elastically deforms it downwardly away from the ground wire connection portion 28.

  Further, the door body 23 is rotated in the closing direction, and when the virtual line L2 formed by the contact portion 46 of the door body 23 and the rotation center O of the door body 23 reaches the neutral virtual line L1 (neutral point), The movable part 34 is in the most elastically deformed state.

  Further, the door body 23 is rotated in the closing direction, and the imaginary line L2 formed by the contact portion 46 of the door body 23 and the rotation center O of the door body 23 gets over the neutral imaginary line L1 (neutral point) and is closed and rotated. By moving to the side, the rotational direction for biasing the door body 23 by the reaction force of the movable portion 34 is reversed from the opening direction to the closing direction. Accordingly, the door body 23 is forcibly rotated toward the closed position by the reaction force urged from the movable portion 34 in the closing direction. At the same time, the movable portion 34 presses and holds the ground wire against the ground wire connecting portion 28 to hold the ground terminal and the ground wire in an electrically connected state.

  After the movable portion 34 presses and holds the ground wire against the ground wire connecting portion 28, the door body 23 is inserted into the ground wire insertion port 22 at the position where the contact portion 46 contacts the movable portion 34 and the door portion 42. It is possible to freely rotate between the positions contacting the grounding wire. Therefore, for example, due to the relationship of the center of gravity of the door body 23, when the finger is released from the operation unit 44, the door body 23 rotates in the closing direction, and the door 42 is on the ground wire inserted into the ground wire insertion port 22. Abut.

  On the other hand, when the ground wire is disconnected from the outlet 10, as described above, the door body 23 is rotated to the open position so that the open state of the door body 23 is maintained and the movable portion 34 is connected to the ground wire. Since a gap of a size that allows the ground wire to be pulled out is formed between the portion 28 and the portion 28, the ground wire can be easily pulled out.

  After removing the ground wire, as described above, the door body 23 is returned to the closed position by rotating the door body 23 in the closing direction.

  According to the outlet 10 configured in this way, the leaf spring 31 is elastically deformed by contact with the leaf spring 31 by turning the door body 23 to the open position, and the ground wire can be attached and detached. At the open position, the door body 23 is urged toward the opening direction by the leaf spring 31. Therefore, at the open position of the door body 23, the door body 23 can be opened and the ground wire can be attached and detached even if the hand is released from the door body 23. The state can be maintained, and the ground wire can be easily attached and detached.

  Further, the door body 23 is urged toward the opening direction by the leaf spring 31 if the door part 42 is on the opening rotation side with respect to the neutral point in the middle of the rotation range of the door part 42, and the door If the portion 42 is on the closing rotation side, it is urged toward the closing direction by the leaf spring 31. Therefore, the leaf spring 31 can be effectively used without using any special urging means.

  Further, since the reaction force from the leaf spring 31 is applied to the door body 23, when a general shaft is used for the rotation center O, the shaft may cause a problem in strength. Therefore, by supporting the door body 23 on the outlet body 16 so as to be rotatable by the rotation guide portion 45 provided in an arc shape around the rotation center O, the reaction force from the leaf spring 31 is prevented. Thus, the strength of the rotation guide portion 45 can be increased, and the reliability can be improved.

  Next, a second embodiment will be described with reference to FIG. In addition, about the same structure and effect as 1st Embodiment, the description is abbreviate | omitted using the same code | symbol.

  A spherical protrusion 50 serving as a locking portion is formed to protrude from at least one side surface of the lever portion 43 of the door body 23 at a position away from the rotation guide portion with respect to the rotation center O. ing.

  On the other hand, the support member 38 or the outlet main body 16 is provided with a hollow portion into which the protrusion 50 is fitted and held when the door body 23 is rotated to the open position.

  With this configuration, when the door body 23 is rotated to the open position, the leaf spring 31 urges the door body 23 in the opening direction, and the protrusion 50 is formed in the recessed portion of the support member 38 or the outlet body 16. By fitting the door body 23 into the open position by fitting, the door body 23 can be reliably maintained in the open state.

  Further, by operating the door body 23 in the open position in the closing direction, the projecting portion 50 comes off from the recess of the support member 38 or the outlet body 16, and the door body 23 can be rotated in the closing direction.

  In addition, the protrusion 50 is not limited to the protrusion 50 on the door body 23 side, and the recess on the support member 38 or outlet body 16 side, but the protrusion is provided on the door body 23 side and the protrusion on the support member 38 or outlet body 16 side. May be.

  The outlet 10 is provided with a pair of ground wire insertion ports 22, but individual door bodies 23 that open and close for each ground wire insertion port 22 may be used, or both ground wire insertion ports 22 may be opened and closed together. Alternatively, an integrated door body 23 may be used.

  The outlet can be applied not only to the embedded outlet but also to an outlet with a cord.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 outlet
16 Outlet body
22 Ground wire insertion slot
23 Door
31 leaf spring
42 Door
45 Rotation guide
46 Contact part
50 Projection as a locking part

Claims (3)

An outlet body having a ground wire insertion opening;
The outlet disposed within the body, a leaf spring which holds the ground wire to be inserted from the ground wire insertion opening;
Door portion that is rotatably supported between an open position for opening the by rotating the ground wire insertion opening into the outlet body and a closed position for closing said ground wire insertion port to said outlet body, and it has a contact portion to allow detachment of the ground wire is elastically deforming the plate spring in contact with the plate spring by rotation to the open position of the door portion, rotation of the door portion If the door portion is on the open rotation side with the neutral point in the middle of the range as a boundary, the leaf spring is biased toward the opening direction, and if the door portion is on the close rotation side, the plate spring A door body biased towards the closing direction by ;
An outlet characterized by comprising . Door is claim 1 Symbol mounting receptacle, characterized in that a locking portion for detachably engaging against outlet body by rotation in the open position. The outlet according to claim 1 or 2 , wherein the door body is rotatably supported by the outlet body by a rotation guide portion provided in an arc shape around the rotation center.

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