JP5796779B2 - Outlet - Google Patents

Description

  Embodiments described herein relate generally to an outlet installed outdoors or the like.

  In recent years, charging stands for electric vehicles (EV) have been installed. In addition, electric bicycles have become widespread in ordinary households, and electric bicycles can be charged from commercial power sources. For charging at these charging stations and ordinary households, an outlet to which the plug can be connected is provided outdoors, and a lock receiving portion provided on the plug and a lock receiving portion are provided so that the plug cannot be accidentally disconnected during charging. The lock piece part which fits in is provided in the outlet, and the lock mechanism is configured to prevent it from coming off.

JP2011-198745A

  However, there are dimensional tolerances in the components of the plug lock receiving portion and the outlet lock piece, and there is a risk that the components cannot be reliably locked due to manufacturing variations. For this reason, in this type of outlet, an important issue is how to configure the outlet so that it can be reliably locked even if there is a dimensional tolerance or manufacturing variation.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an outlet capable of securely locking the plug to the outlet while the plug is inserted into the outlet.

The outlet in the embodiment of the present invention includes a main body, an outlet unit, and a lock piece. A main body is installed in a part to be installed. The outlet unit has an insertion slot into which the plug blade of the plug is inserted, and a blade receiving bracket connected to the plug blade of the inserted plug. Lock piece portion, have a engagement portion engaged with the lock receiving portion of the plug, presses the plug into the insertion slot in the insertion direction of the plug blades of the plug, the insertion slot and the engaging portion is provided faces Is configured to be movable a predetermined distance from a position that is the same as or closer to the dimension from the tip end surface of the plug to the lock receiving portion .

  According to the present invention, it is possible to provide an outlet capable of securely locking the plug to the outlet while the plug is inserted into the outlet.

The longitudinal cross-sectional view which shows the state which installed the outlet socket which is embodiment of this invention in the outer wall surface of a building, and inserted the plug. Similarly, the longitudinal cross-sectional view which shows the state which installed the electrical outlet in the outer wall surface of a building. The perspective view which isolate | separates and shows an outlet socket similarly to a main body and a cover member. The figure which shows the lock piece part of an outlet socket, and the lock receiving part of a plug in the same section, (a) is a side view showing an engaged state, (b) is a side view showing the lock piece part, (c) ) Is a cross-sectional view taken along the line cc in FIG. It is a figure which similarly shows a plug, (a) is a side view, (b) is a perspective view which notches and shows a part. The side view which shows the engagement state of the lock piece part in the conventional electrical outlet, and the lock receiving part of a plug in a partial cross section. The side view which shows the engagement state of the lock piece part of the outlet socket which is the embodiment of the present invention, and the lock receiving part of the plug, with a part thereof being sectioned. The longitudinal cross-sectional view which shows the state which similarly inserts a plug into an outlet socket. The longitudinal cross-sectional view which similarly shows the 1st modification of an outlet socket. The side view which shows the engagement state of the lock | rock piece part of an outlet socket, and the lock | rock receiving part of a plug in the 2nd modification of an outlet socket partly similarly.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. This embodiment constitutes an outlet 10 for outdoor installation with a rated current of 20 A and a rated voltage of 250 V, which is mainly installed outdoors for charging an electric vehicle. As shown in FIG. Of the outlet unit 12 having the main body 11, the insertion port 12a into which the plug blade 21 of the plug 20 is inserted, and the blade holder 12b connected to the plug blade of the inserted plug. The lid 13 is configured to be rotatable with respect to the main body 11 between a closed position covering the insertion port 12a and an open position where the insertion opening 12a is opened. It consists of a lock piece 14 that moves in the insertion direction of the blade 21 and presses the plug against the insertion port 12a, a cover member 15 that covers the main body 11, and the like.

  As shown in FIGS. 1 to 3, the main body 11 has a box shape made of a synthetic resin having electrical insulation, and is composed of an upper plate 11a, a lower plate 11b, both side plates 11c and 11c, and a front plate 11d. The cross section with the open back is integrally formed so as to form a rectangular shape. And the attaching part 11e for attaching the main body 11 to the to-be-installed part X is formed in the outer peripheral part of an upper part, and the lower outer peripheral part. The attachment portion 11e is formed by projecting the back side of the upper surface plate 11a and the lower surface plate 11b integrally outward in a bowl shape, and a through hole 11f is formed therethrough. As will be described later, the attachment holes 11f are holes for attaching to the support 31 on which the main body 11 is installed with screws S1, and two on the upper surface side and one on the lower surface side, and two in total, are formed.

  Further, as shown in FIG. 3, the front plate 11d of the main body 11 is formed so as to be inclined so that the plate surface faces obliquely downward, and a circular shape into which a jetty portion 12d of the outlet unit 12 described later is sealed and inserted. An opening 11d1 is formed. In addition, although the main body 11 comprised the box shape with which the whole back surface was open | released, the back surface may be closed by forming about the insertion hole for letting an electric wire pass. Moreover, although the upper surface plate 11a, the lower surface plate 11b, and the both side surface plates 11c and 11c are configured as closed plate surfaces, a part of the plate surface may be opened.

  As shown in FIGS. 1 and 2, the outlet unit 12 is configured to form a small box-shaped block made of a synthetic resin having electrical insulation, and an insertion port 12a into which the plug blade 21 of the plug 20 is inserted on the front surface. Is integrally formed, and a blade receiving bracket 12b is incorporated therein so that the plug blade insertion portion 12b1 faces the back side of the insertion port 12a, and the plug blade 21 of the plug 20 inserted from the insertion port 12a is It is inserted from the plug blade insertion portion 12b1 of the blade bracket 12b and electrically connected.

  The insertion port 12a of the outlet unit 12 is provided in a recessed fitting portion 12c that is stepped down from the front surface of the outlet unit 12, and the plug blade 21 of the plug 20 inserted into the insertion port 12a easily contacts the user's finger or the like. It is configured not to. Then, the stepped up portion for constituting the recessed fitting portion 12c constitutes an arch-shaped jetty portion 12d, and a ridge portion 13g of the lid 13 to be described later is applied to the top surface of the jetty portion 12d. Configured to touch.

  A packing 12e is provided on the outer periphery of the bottom surface of the recessed fitting portion 12c. The packing 12e is composed of an O-ring made of silicone rubber or the like, and is fitted and supported in a concave groove 12f formed on the outer periphery of the bottom surface of the concave fitting portion 12c. When the plug blade 21 of the plug 20 is inserted from the insertion port 12a and connected to the blade receiving bracket 12b, the distal end surface 24 of the plug 20 abuts on the outer surface of the packing 12e, and the bottom surface of the recessed fitting portion 12c. In other words, it is sealed so that water, dust and the like do not enter the electrical connection portion near the insertion port 12a. As will be described later, the distal end surface 24 of the plug 20 moves further in the insertion direction of the plug blade 21 when the plug 20 is inserted, thereby further packing 12e by the lock piece portion 14 that presses the plug 20 against the insertion port 12a. It can be tightly sealed by being in close contact with the outer surface.

  Note that the blade receiving bracket 12b incorporates a total of three blade receiving brackets, that is, a pair of blade receiving brackets 12b for power connection and one blade receiving bracket 12b 'for ground connection with respect to the outlet unit 12. A power line and a ground line are connected to each blade bracket from the rear surface of the outlet unit 12 when the outlet is installed (not shown).

  The jetty portion 12d of the outlet unit 12 is inserted into the opening 11d1 formed in the front plate 11d of the main body 11, and the insertion port 12a is disposed in the main body 11 so as to face the opening 11d1. Further, the outlet unit 12 is attached to the inclined front plate 11d so that the insertion port 12a faces obliquely downward, and the plug blade insertion portion 12b1 of each blade receiving bracket 12b faces obliquely downward. It is arranged in the main body 11 so that the plug 20 can be mounted from below. In the present embodiment, the outlet unit 12 is disposed in the main body 11 so that each blade bracket 12b faces obliquely downward at an angle of about 30 °.

  As shown in FIG. 3, the lid body 13 forms a door for covering the insertion port 12a of the outlet unit 12 disposed in the main body 11, that is, the plug blade insertion portion 12b1 of the blade bracket 12b. In the same manner as in No. 11, it is integrally formed in a substantially rectangular plate shape with a synthetic resin having electrical insulation. As shown in FIGS. 1 and 2, the size of the rectangular lid body 13 can cover each insertion port 12a and is smaller than an opening 15d of a cover member 15 described later. 15d is formed so as to substantially cover and have a function as a lid of the opening, and the lower side 13a is pivotally supported so as to be rotatable with respect to the lower side 11g of the front plate 11d of the main body 11.

  That is, a separate bearing 16 made of resin is fixed to the lower side portion 11g of the main body 11 with a screw S2 (FIG. 1), and a pair of shaft portions provided on the lower side portion 13a of the lid body 13 are provided on both sides of the bearing 16. The lid 13 is pivotally supported on the front plate 11d of the main body 11 by inserting the shaft 16a through both of them. A coil spring (not shown) is interposed between the bearing 16 and the lower side 13a of the lid 13 so that the lid 13 always closes the insertion port 12a of the outlet unit 12 and the opening 15d of the cover member 15. Energize. An operation handle 13e that protrudes outward is integrally formed on the upper side 13d of the lid 13.

  Further, as shown in FIG. 3, a protrusion 13 g is integrally formed on the inner surface of the lid body 13. The protruding portion 13g serves to prevent or suppress entry of water, dust and the like into the insertion port 12a of the outlet unit 12 described above at the closed position of the lid 13, and the insertion port 12a is formed. The outer surface of the arch-shaped ridge portion 12d is formed in a substantially arch-shaped shape so that the top surface of the ridge portion 13g contacts the top surface of the ridge portion 12d of the concave fitting portion 12c. The

  Thereby, even if water invades from the gap between the lid 13 and the cover member 15, particularly the upper and side gaps, the top surfaces of the ridge portion 12 d and the ridge portion 13 g come into contact with each other, A kind of bank is formed, and it becomes possible to relieve the momentum of water transmitted from the gap and prevent or suppress the intrusion of water into the insertion port 12a.

  Further, a lock piece portion 14 that constitutes a lock mechanism of the plug together with the lock receiving portion 23 of the plug 20 is provided at a substantially central portion of the inner surface of the lid 13 configured as described above. As shown in FIG. 4 in particular, the lock piece 14 engages the plug 20 connected to the blade receiving bracket 12b on the main body 11 side of the outlet, and engages the hook 20 to prevent the plug 20 from coming off from the outlet 10. It is comprised by the nail | claw 14a.

  The lock piece portion 14 is made of a synthetic resin like the lid body 13 and engages with the lock receiving portion 23 of the plug 20 to prevent the plug 20 from being detached as described above. 21 has a function of moving in the insertion direction of 21 (direction of arrow a in FIG. 4A) and pressing the distal end surface 24 of the plug 20 against the insertion port 12a.

  That is, as shown in FIG. 4B, the engaging claws 14a constituting the lock piece portion 14 are formed as vertical surfaces so that one side surface is the engaging portion 14a1, and the bottom portion 14a2 is formed as a slide surface. 4 is formed in a substantially triangular shape when viewed from the front in FIG. 4, and the corner portion of the top of the vertical surface serving as the engaging portion 14a1 is integrated with an R shape for calling in or a guide portion 14a3 forming an inclined surface. Is formed. Furthermore, it forms in the shape which makes reverse T shape by the side view in FIG. 4, and a pair of protrusion part 14a4, 14a4 is integrally formed in the lower part both sides (FIG.4 (c)).

  Further, a guide rail 14b is integrally formed along the insertion direction a of the plug 20 (FIG. 3) at a substantially central portion of the inner surface of the lid 13 (FIG. 3), and the guide rail 14b has a pair of opposed concave grooves 14b1 and 14b1. And a pair of protrusions 14a4, 14a4 of the engaging claw 14a are configured to be fitted. Accordingly, the lock piece portion 14 is guided by the concave grooves 14b1 and 14b1 of the guide rail 14b, and is configured to be slidable along the insertion direction a of the plug 20.

  Further, the guide rail 14b is integrally formed with a stopper portion 14b2 on the insertion direction a side of the plug 20, and is closed at the other end side in the opposite direction to integrally form a support portion 14b3. An elastic member, in this embodiment, a compressed coiled spring 14b4 is mounted between 14a and 14a. The elastic member may have another configuration such as a leaf spring. Then, due to the elasticity of the spring 14b4, the engaging claw 14a is constantly urged to move in the insertion direction a of the plug 20, and the engaging portion 14a1 is in contact with the stopper portion 14b2. And the movement distance l1 of the lock piece part 14 in the guide rail 14b, that is, the engaging claw 14a, is configured as follows in relation to the lock receiving part 23 of the plug 20.

  Here, the configuration of the plug will be described. As shown in FIG. 5, the plug 20 includes a plug body 22 made of an insulating member such as a synthetic resin, and a plug blade 21, that is, a pair of plug blades 21 a for power supply and one plug blade 21 b for grounding. And are embedded in one piece. A lock receiving portion 23 is integrally formed on the outer peripheral surface of the plug body 22. As shown in FIG. 5, the lock receiving portion 23 is continuously curved in a curved shape in the outer peripheral direction and the longitudinal direction of the plug main body 22 from a convex portion integrally formed at a substantially central portion of the outer peripheral surface of the plug main body 22. By adopting the shape, the engagement concave portion 23a having an approximately “U-shape” or “U-shape” shape as a hanging allowance, the curved inclined portions 23b and 23b, and the engagement concave portion 23a are It has a locking portion 23c formed of a vertical surface formed on the bottom surface portion of the character or U shape.

  Then, as shown in FIG. 4A, the plug engagement recess 23a slides and fits into the outlet-side engagement claw 14a by the insertion operation of the plug 20, and the engagement recess 23a is perpendicular to the engagement recess 23a. The engaging portion 23c made of a surface and the engaging portion 14a1 made of a vertical surface of the engaging claw 14a come into contact with each other to engage with each other. The curved inclined portions 23b and 23b act to guide the engaging claw 14a on the outlet side toward the engaging recess 23a along the inclined surface in the process of inserting the plug 20 into the insertion port 12a. Eggplant. The engagement recess 23a of the lock receiving portion 23 in FIGS. 1 and 4 (a) is shown partially in section along the line aa in FIG. 5 (b) and is engaged with the engagement portion 14a1. Showed the condition.

  The plug 20 configured as described above is, for example, a plug for a rated current of 20 A and a rated voltage of 250 V, according to the standards of the Japan Wiring Equipment Manufacturers Association, from the tip surface 24 of the plug 20 to the locking portion 23 c of the lock receiving portion 23. Is standardized including tolerances so that the dimension l2 is 40 ± 0.3 mm (FIG. 5A). Also, as shown in FIG. 4A, the dimension l2 is determined from the contact surface between the plug's tip end surface 24 when the plug 20 is inserted into the outlet 10 and the bottom surface of the recessed fitting portion 12c. It is also a dimension to the engagement surface of 14 engaging part 14a1 and the latching | locking part 23c of the lock | rock receiving part 23. FIG.

  As described above, since the tolerance including the tolerance is standardized, the dimension l2 is 39.7 mm as the minimum dimension lmin and 40.3 mm as the maximum dimension lmax when a tolerance of ± 0.3 mm is considered. For this reason, for example, the dimension on the lock piece part 14 side, that is, the dimension from the bottom of the recessed fitting part 12c of the outlet 10 to the engagement part 14a1 of the lock piece part 14 is configured to be 40 mm, and the dimension on the plug side, that is, In the conventional example in which the lock piece portion 14 does not move when the dimension l2 from the distal end surface 24 of the plug 20 to the locking portion 23c of the lock receiving portion 23 is configured to be the minimum dimension lmin = 39.7 mm, FIG. As shown in FIG. 3, a gap s1 of 0.3 mm is generated between the engaging claw 14a of the lock piece portion 14 and the engaging portion 23c of the lock receiving portion 23. May come off from the outlet 10. Further, when the dimension l2 is configured with the maximum dimension lmax = 40.3 mm, a situation occurs in which the locking portion 23c of the lock receiving portion 23 cannot be engaged with the engaging portion 14a1 of the lock piece portion 14. In addition, the engagement recessed part 23a in FIG. 6 is shown partially in section along the line aa in FIG. 5B, and shows an engaged state with the engagement part 14a1.

  Thus, in the present embodiment, the lock piece portion 14 is configured to be movable in the insertion direction a of the plug 20 along the guide rail 14b as shown in FIG. This moving distance l1 is set to a dimension capable of absorbing the minimum dimension lmin = 39.7 mm to the maximum dimension lmax = 40.3 mm, that is, 0.6 mm. As a result, when the minimum dimension lmin is 39.7 mm, the lock piece 14 moves 0.3 mm in the insertion direction a, so that even if the lock piece 14 is configured to the minimum dimension, There is no gap s1 between the engaging portion 14a1 and the locking portion 23c of the lock receiving portion 23, and the engaging claw 14a can be reliably engaged with the lock receiving portion 23. Actually, as shown in FIG. 4 (b), the lock piece 14 is always urged in the insertion direction a of the plug 20 by the spring 14b4 and has already moved by 0.3 mm, and the engaging claw 14a. The engaging part 14a1 which is the tip of the guide part 14a is in contact with the stopper part 14b2 of the guide rail 14b. For this reason, the lock receiving portion 23 of the plug 20 is guided along the R-shaped guide portion 14a3 for calling, formed in the lock piece portion 14, while being opposite to the insertion direction a (in FIG. 4 (a), The two members engage while moving once in the direction of arrow b), and finally move in the insertion direction a by 0.3 mm so as not to form a gap.

  When the maximum dimension lmax is 40.3 mm, the locking portion 23c of the lock receiving portion 23 on the plug side is an R-shaped guide portion 14a3 formed on the lock piece portion 14 for calling. Is moved by 0.3 mm with respect to the direction opposite to the insertion direction a (in the direction of arrow b in FIG. 4A) while being guided along the direction. Accordingly, even when the maximum dimension is configured, the engagement claw 14 a can be reliably engaged with the lock receiving portion 23.

  As a result, the engagement claw 14a of the lock piece portion 14 and the lock receiving portion 23 can be reliably engaged with each other regardless of the dimensional tolerance due to the dimensional tolerance. It is possible to prevent a fear that 20 cannot be engaged or is disconnected from the outlet 10. That is, it is possible to ensure the reliable mounting of the plug 20 on the outlet 10 even for the above-described dimensional tolerances or manufacturing variations of about ± 0.3 mm.

  In addition, in the present embodiment, the lock piece portion 14 always acts to press in the insertion direction a by the elasticity of the spring 14b4. For this reason, the plug 20 can be further prevented from coming off and the outer surface of the packing 12e can be strongly pressed and brought into close contact with the front end surface 24 of the plug 20, thereby further improving the waterproof / dustproof effect of the packing 12e. It is possible to make it even more effective.

  Furthermore, in the present embodiment, about 1.0 mm is added to the dimensional tolerance ± 0.3 mm. That is, as shown in FIG. 7, the dimension corresponding to the dimensional tolerance described above is ± 1.3 mm, the minimum dimension lmin is 38.7 mm, the maximum dimension lmax is 41.3 mm, and the movement of the lock piece 14 is performed. The distance l1 was configured to be a dimension capable of absorbing the minimum dimension lmin = 38.7 mm to the maximum dimension lmax = 41.3 mm, that is, about 2.6 mm. As a result, it is possible to ensure that the plug is securely attached to the outlet even with respect to a plug having a dimensional tolerance of ± 0.3 mm, that is, various types of plugs configured outside the standard. In addition, the pressing force due to the elastic force of the spring 14b4 is further increased, and it is possible to more reliably prevent the plug from being detached and to exert the adhesion effect by the packing 12e. In addition, the engagement recessed part 23a in FIG. 7 is shown partially in section along the line aa in FIG. 5B, and shows an engaged state with the engagement part 14a1.

  In the case of the configuration shown in FIG. 4A, since the moving dimension l1 is 0.6 mm (0.3 mm on one side), when the minimum dimension lmin is 39.7 m, the engaging claw 14a is provided with the stopper portion. There arises a problem that a force that abuts against 14b2 and presses the plug 20 in the insertion direction a does not act. However, according to the configuration of FIG. 7 in which the moving dimension l1 is 2.6 mm (1.3 mm on one side), this problem can also be solved. In addition, although the outlet 10 and the plug 20 of this embodiment demonstrated above showed the structure and dimension of the locking mechanism for example of one standard of Japan Wiring Equipment Manufacturers Association, other domestic and foreign standards, and also standardization The present invention can be applied as appropriate to outlets and plugs that are not configured.

  The lid body 13 constituting the plug locking mechanism as described above closes the insertion port 12a of the outlet unit 12 and the opening 15d of the cover member 15 when not in use when the plug 20 is not connected, Acts as waterproof and dustproof. At the same time, by grasping the handle 13e with a finger from the opening 15d of the cover member 15 and opening it in the direction indicated by the arrow c in FIG. 2, the insertion port 12a is exposed to the outer surface as shown in FIG. The plug 20 can be inserted from below into the blade receiving bracket 12b from the insertion port 12a.

  Then, when the plug 20 is inserted into the blade bracket 12b, as shown in FIG. 1, the plug 20 moves in the direction of arrow a in FIG. 1 to the lock receiving portion 23 formed on the outer peripheral surface of the plug body 22. Thus, the engagement claw 14a of the lock piece 14 on the outlet side is engaged, and the plug is prevented from coming off. This retaining is achieved by sliding the plug 20 in the direction of the arrow a with respect to the lid 13 that is normally biased in the closing direction by the elasticity of the spring provided on the lid 13. The 14 engaging claws 14a are automatically engaged with the lock receiving portion 23 of the plug 20, and are automatically released by the operation of opening the lid 13 from the engaged state (operation in the direction of arrow c).

  The cover member 15 described above covers the main body 11, and as shown in FIG. 3 in particular, the cover member 15 has a box shape made of a synthetic resin having electrical insulation properties. The upper surface plate 15a, the lower surface plate 15b, and the both side surface plates 15c and 15c are formed so as to cover substantially from the left and right direction, and the cross section with the front and back surfaces open is formed in a rectangular box shape. The inner shape and dimensions of the cover member 15 are formed slightly larger than the outer shape and dimensions of the main body 11, and the main body 11 is inserted into the cover member 15 and fitted with a slight gap.

  The front surface of the cover member 15 has an opening 15d into which the plug blade 21 of the plug 20 is inserted substantially in the middle thereof. The opening 15d is opposed to the top and bottom of the opening 15d and is integrally formed in a bowl shape toward the opening 15d. A pair of formed edges 15e, 15e is formed. Thus, the entire shape of the cover member 15 is configured to form a substantially frame shape with a depth by the opening 15d, the upper and lower edges 15e, and the left and right side plates 15c and 15c.

  Then, the cover member 15 having a substantially frame shape is put on the main body 11 so as to substantially cover the entire main body 11. That is, the back side of the cover member 15 that is opened is inserted and fitted so as to face the front side of the main body 11. This insertion direction is a direction (in the direction of arrow e in FIG. 3) that is substantially orthogonal to the installation part X when the main body 11 is installed on the installation part X, and covers the main body 11 with the cover member 15. Insert it like this.

  Thereby, the upper surface plate 11a, the lower surface plate 11b and the both side surface plates 11c, 11c of the main body 11 are covered by the upper surface plate 15a, the lower surface plate 15b and the both side surface plates 15c, 15c of the cover member 15, and at the same time, the opening 15d The outlet 12a of the outlet unit 12 provided in the front plate 11d, that is, the concave fitting portion 12c having the jetty portion 12d is mounted so as to be exposed to the outer surface. Furthermore, the cover member 15 is formed in a substantially frame shape so as to cover the outer peripheral portion including the attachment portions 11e and 11e of the main body 11, and can achieve a waterproof / dustproof effect in the attachment portion 11e, particularly the upper and lower attachment holes 11f. it can. The main body 11 and the cover member 15 mounted as described above are detachably locked by the locking means 17 and the engagement means 18 and mounted.

  The waterproof outlet 10 having the lid body 13 and the cover member 15 is configured as described above. The outlet 10 configured as described above is installed in the installation portion X by the back frame 30 and the support 31 having packing (not shown).

  Next, the installation procedure and operation of the outlet 10 configured as described above will be described. In the outlet 10 configured as described above, the main body 11 and the cover member 15 are separated as shown in FIG. And as shown in FIG. 2, it installs so that the back side of the main body 11 may become substantially parallel to the outer wall surface X with respect to an installation part, for example, the outer wall surface X in the building of a general household, ie, a substantially vertical direction. . For installation, first, the support 31 is attached to the outer periphery of the installation hole X1 formed in advance on the outer wall surface X with wood screws or the like, and the back frame 30 having packing is attached to the support 31 with screws.

  Next, electric wiring for connecting a 200 V power supply line and a grounding wire is performed on each blade receiving bracket 12 b of the main body 11. Next, the attachment portions 11e and 11e on the outer peripheral portion of the main body 11 are aligned with the back frame 30, the screws S1 and S1 are inserted into the attachment holes 11f and 11f, and are fixed to the screw holes 30a of the support 31 by screwing.

  Next, the cover member 15 is prepared, the open back surface of the cover member 15 is aligned so as to cover the front plate 11d of the main body 11, and the cover member 15 is arranged in a direction substantially orthogonal to the installation portion X ( The main body 11 is inserted into the cover member 15 so as to be detachable by the engaging means. At this time, the cover member 15 can be attached to the main body 11 by moving it in the direction e substantially orthogonal to the portion X to be installed, so that the outer wall surface X1 on the upper side of the installation portion protrudes or other structures Even when the cover member 15 is provided, the cover member 15 can be securely attached to the main body 11 without being disturbed by these protrusions or structures.

  The outlet 10 installed on the outer wall surface X as described above is used as follows. That is, when charging the electric vehicle, as shown in FIG. 8, the handle 13e of the lid 13 is picked and released from the state of FIG. 2 with one hand. Thereby, the opening 15d of the cover member 15 is opened, and the insertion port 12a of the outlet unit 12 is exposed to the outside.

  In this state, as shown in FIG. 8 → FIG. 1, the plug 20 grasped by the other hand is inserted obliquely from below the main body 11, and the plug blade 21 is inserted into the insertion port 12a to start charging. Then, by releasing the handle 13e of the lid 13 opened with one hand, the engagement claw 14a of the lock piece 14 is automatically engaged with the lock receiving portion 23 of the plug 20 and is not used during use. The plug 20 is held so that it does not come out of the outlet 10.

  At this time, as described above, the lock piece 14 provided in the outlet 10 is configured to move in the insertion direction a of the plug blade 21 of the plug 20 and press the plug 20 against the insertion port 12a. Tolerance, manufacturing variations, and various non-standard plugs can be securely attached to the outlet 10 of the plug 20, and the plug can be prevented from being pulled out during charging. it can. In addition, the lock piece 14 always acts to be pressed toward the insertion direction a by the elasticity of the spring 14b4. Therefore, the plug 20 can be further prevented from coming off, and the packing 12e can be pressed and brought into close contact with the front end surface 24 of the plug 20, so that the insertion opening 12a by the packing 12e, that is, the plug blade 21 and Intrusion of water, dust, or the like at the electrical connection portion of the blade bracket 12b can be reliably prevented.

  Further, as described above, when the plug 20 is inserted, that is, when the outlet 10 is in use, the upper surface and both side surfaces of the plug 20 are covered with the cover member 15, and against rainwater from above and rainwater from the lateral direction. Thus, it becomes possible to prevent rainwater from entering the vicinity of the insertion port 12a into which the plug blade 21 of the plug 20 is inserted, that is, the electrical connection portion.

  Next, in a state where charging is completed, the handle 13e of the lid 13 is slightly opened in the direction of the arrow c in FIG. 1, and the engagement claw 14a of the lock piece 14 and the lock receiving portion 23 of the plug 20 are engaged. Is released, and the plug 20 is pulled out from the insertion slot 12a of the outlet 10. By this operation, the lid 13 is automatically rotated toward the closed position by the action of the spring, and the opening 15d and the insertion port 12a of the cover member 15 are closed (FIG. 2).

  At this time, as shown in FIG. 2, the top surface of the ridge portion 13g formed on the inner surface of the lid body 13 abuts on the top surface of the ridge portion 12d of the recessed fitting portion 12c in which the insertion port 12a is formed. Even if, for example, water is infiltrated from the gap between the lid 13 and the cover member 15, particularly the upper and side gaps, due to a car wash or the like near the outlet, the tops of the jetty 12 d and the ridge 13 g When the surfaces come into contact with each other, a kind of bank is formed, and it is possible to relieve the momentum of the water transmitted from the gap and prevent or suppress the entry of water into the insertion port 12a. Thus, when the outlet is not in use, the vicinity of the outlet opening of the outlet, that is, the electrical connection portion is covered with the lid 13 and the cover member 15 to prevent or suppress entry of water, dust, and the like from above and from the side. It becomes possible to do. Moreover, even if it penetrate | invades, water etc. cannot permeate into the insertion port 12a, ie, an electrical connection part, by the packing 12e.

  At the same time, the lid 13 can be automatically rotated to the closed position without any operation by the spring, and the lid 13 can be operated by the spring by removing the plug 20. Therefore, even if the operation of closing the insertion port 12a by the lid 13 is forgotten, it can be reliably closed. Further, the action of the spring makes it possible to prevent inadvertent opening, scattering, etc. of the lid 13 even when there is strong wind and rain such as a typhoon. At the same time, since the attachment portions 11e and 11e of the main body 11 are covered by the cover member 15, the attachment portions 11e and 11e can be waterproofed and dust-proof, and the appearance can be improved and the appearance can be improved. It is possible to prevent it. When removing the cover member 15 from the main body 11 during maintenance / inspection / repair, etc., the engagement means 18 is disengaged by using a tool such as a screwdriver, and removed, for maintenance / inspection / repair, etc. Can be done easily.

  As mentioned above, in this embodiment, although the lock piece part 14 was provided in the cover body 13, as shown in FIG. 9, you may comprise so that it may provide in the main body 11 side. That is, a lock piece portion 14 is provided at a lower portion of the main body 11, and the lock piece portion includes a hook-like engagement claw 14a, and a spring (not shown) that urges the engagement claw 14a in a direction that always protrudes is built in. Configured. In this state, the engagement claw 14a is engaged with the engagement recess 23a of the plug 20 inserted from the lower side of the main body 11, and is prevented from coming off. In addition, by operating a separate release button or the like, the engagement state of the engagement claw 14a with the retracting plug 20 is released. In this configuration, the elastic member that urges the lock piece 14 toward the plug insertion direction a is constituted by a V-shaped leaf spring 14b4. Also in the lock piece portion 14 having the above-described configuration, as in the above-described embodiment, it is ensured that the plug 20 is securely attached to the outlet 10 even with respect to dimensional tolerances, manufacturing variations, and various non-standard plugs. can do. Furthermore, the plug 20 can be further prevented from coming off, and the packing 12e can be pressed and adhered.

  The lock piece 14 is always urged toward the insertion direction a of the plug 20 by the spring 14b4. However, the lock piece 14 may be configured to be manually pressed by a plunger mechanism or the like after the plug is inserted. That is, as shown in FIG. 10, one end portion of the plunger 40 is brought into contact with the other end portion of the spring 14b4, and the knob 41 on the other end portion of the plunger 40 is pushed in the direction of arrow a in the drawing, thereby The tip end surface 24 of the plug 20 can be pressed toward the plug insertion direction a through the engagement state of the lock receiving portion. Although not shown, the plunger 40 can rotate left and right around the plunger shaft, and is locked in the pressed state by pressing in the a direction and rotating to the right. Further, the lock is released by rotating to the left. The engagement recess 23a in FIG. 10 is shown partially in section along the line aa in FIG. 5B, and shows an engagement state with the engagement portion 14a1. In FIGS. 9 and 10 showing the modification, the same parts as those in FIGS. 1 to 8 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In addition, the outlet of the present embodiment is preferably applied to an outlet with a cover installed outdoors. However, an outlet installed indoors may be used. The number of units may be two or three, and the number is not limited. Furthermore, it may be an outlet without a ground terminal, and is not limited to a specific outlet. The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and various design changes can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Outlet 11 Main body 12 Outlet unit 12a Insert port 12b Blade holder 13 Cover body 14 Lock piece part
14a1 Engagement part 20 Plug 21 Plug blade 23 Lock receiving part X Installed part

Claims (3)

A main body to be installed in the installation part;
An outlet unit into which the plug blade of the plug is inserted, and an outlet unit having a blade receiving bracket connected to the plug blade of the inserted plug;
Have a engagement portion engaged with the lock receiving portion of the plug, and a lock piece portion for pressing the plug into the insertion slot in the insertion direction of the plug pins of the plug;
Comprising
The lock piece can move a predetermined distance from a position where the distance between the engagement portion and the surface provided with the insertion port is the same as or closer to the dimension from the tip surface of the plug to the lock receiving portion. Outlet characterized by being configured . The outlet according to claim 1, wherein the lock piece is always urged in an insertion direction of the plug by an elastic member. The lock piece is provided on a lid configured to be rotatable with respect to the main body between a closed position that covers an insertion port of the outlet unit and an open position that opens. Item 3. The outlet according to item 1 or 2.

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