JP5481266B2 - Outlet cover - Google Patents

Description

  The present invention relates to an outlet cover for closing a plug insertion hole of an outlet.

  If the outlet plug is not inserted, the plug insertion hole is exposed, and there is a risk that dust, foreign matter or liquid may enter the plug insertion hole and short-circuit. In order to eliminate the risk of dust, foreign matter or liquid entering the plug insertion hole and short-circuiting, an outlet cover that closes the plug insertion hole of the outlet is used. The simplest outlet cover has a structure in which a plug-like projection that is inserted into the plug insertion hole is protruded from a base that is sized to hide the pair of left and right plug insertion holes, and is usually a two-pole outlet (outlet with plug insertion holes only) or It is configured as a resin molded product corresponding to each of the three-pole outlets (the outlet having a grounding hole in addition to the plug insertion hole). (For example, patent document 1, patent document 2, or patent document 3).

Japanese Unexamined Patent Publication No. 09-035803 Japanese Utility Model Publication No.58-130375 Japanese Utility Model Publication No. 53-162392

  The reason why the simplest outlet cover has a different structure according to the two-pole outlet or three-pole outlet is that the outlet cover that matches the three-pole outlet is difficult to use for the two-pole outlet, so make the structure suitable for each. It depends on what is desired. For example, an outlet cover that protrudes from the base into a grounding hole that fits into a three-pole outlet (hereinafter referred to as a ground-like protrusion) can be used as a two-pole outlet with only the plug insertion hole. Can not. If it is used forcibly, the ground-like projections may get in the way and turn over the base, creating a space where dust tends to accumulate.

  Here, if the outlet cover that matches the three-pole outlet projects only the plug-like protrusion from the base and covers the ground hole with the base, it can be used for either a two-pole outlet or a three-pole outlet. I think. However, such an outlet cover cannot be used side by side with a two-pole outlet (for example, a table tap) in which the portion that hides the ground hole protrudes from the main body of the base and the plug insertion hole is densely formed. Therefore, the projecting part that closes the ground hole is retracted as necessary, while the ground hole is blocked by the projecting part that closes the ground hole provided in the base so that it can be used for both a two-pole outlet and a three-pole outlet. To develop an outlet cover that can be used.

  The product developed as a result of the study is an outer base that protrudes only the plug-like projection, contacts the outlet plane, holds the inner base, and is rotatable outside the inner base in a plane parallel to the outlet plane. The outlet cover is composed of a base and has a ground hole covering surface protruding in parallel with the outlet plane on a part of the outer base. The outlet cover of the present invention is a three-pole outlet, plugging the plug-like protrusion of the inner cover to close the plug insertion hole, covering the ground hole covering surface of the outer base, and closing the ground hole, Rotate the outer cover with respect to the inner cover to change the direction of the ground hole covering surface so that it does not interfere with the adjacent two-pole outlet.

  Since the inner base and the outer base only need to rotate relatively, even if the outer base is rotatably attached to the inner base or the inner base is rotatably fitted to the outer base. Good. When the inner base is rotatably fitted to the outer base, the entire inner base is held and held by the outer base completely, so that the inner base against the outlet plane (surface where the plug insertion hole or ground hole opens) The base and the outer base can be contacted equally, and the plug insertion hole and the ground hole can be completely hidden. In this case, the holding recess of the outer base into which the inner base is fitted and the outer periphery of the inner base are each circular. Furthermore, when the fitting cylinder protruding from the inner base is fitted into the fitting hole opened in the outer base, the sense of unity of both is increased, and the rotation when the inner base and the outer base are relatively rotated is stabilized. .

  For the outer base, the ground hole cover surface may be rotated to any angle with respect to the inner base. However, if there is no restriction on the rotation with respect to the inner base, the weight is required when the outlet cover is used with the inner base and the outer base standing upright. There is a risk that the ground cover will always face down. Therefore, the inner base and the outer base may be provided with two or more pairs of convex portions and concave portions that are engaged with each other in the rotation direction of the outer base with respect to the inner base. The convex portion and the concave portion are respectively assigned to the opposing surfaces or sliding contact surfaces of the inner base and the outer base. The pair of convex portions and concave portions allocated to the inner base and the outer base in this way restricts arbitrary rotation of the outer base relative to the inner base by engaging with each other, and stabilizes the orientation of the ground hole covering surface at an angle at which they engage with each other. . The outer base can be rotated by pushing it so that the concave portion is removed from the convex portion. From this, a convex part and a recessed part comprise a kind of moderation mechanism.

  The outlet cover of the present invention is provided with a ground hole covering surface on the outer base that rotates relative to the inner base, and the ground hole covering surface positioned at an angle that covers the ground hole of the three-pole outlet with respect to the inner base. The effect is that the outer base is rotated and retracted. Thereby, the outlet cover of the present invention can be used for both a two-pole outlet and a three-pole outlet.

It is the perspective view which looked at the outlet cover which is an example of this invention from the front. It is the perspective view which decomposed | disassembled the outlet cover of this example into the inner base and the outer base, and was seen from the front. It is the perspective view which looked at the outlet cover of this example from back. It is the perspective view which decomposed | disassembled the outlet cover of this example into the inner base and the outer base, and was seen from back. It is a front view of the outlet cover of this example. It is a rear view of the outlet cover of this example. It is a right view of the outlet cover of this example. It is a top view of the outlet cover of this example. It is AA sectional drawing in FIG. 5 of the outlet cover of this example. It is a perspective view showing the state before attaching the outlet cover of this example to a three-pole outlet. It is the perspective view showing the state where the outlet cover of this example covered the three-pole outlet. FIG. 6 is a front view corresponding to FIG. 5 illustrating a state in which the outer cover is rotated with respect to the inner cover of the outlet cover of the present example. FIG. 2 is a perspective view corresponding to FIG. 1 showing a state in which the outer cover is rotated with respect to the inner cover of the outlet cover of the present example and the ground hole covering surface is retracted to the right. It is a perspective view showing the state before attaching the outlet cover of this example to a two-pole outlet. It is the perspective view showing the state where the outlet cover of this example covered the two-pole outlet.

  An embodiment for carrying out the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 9, the outlet cover 1 of the present invention holds a disc-shaped inner base 11 in which a pair of left and right plug-like protrusions 111, 111 protrudes, and the inner base 11. An example is shown in which an outer base 12 having a rectangular plate shape that is rotatable with respect to the outer base 12 and a semi-disc-shaped ground hole covering surface 121 projecting from one side of the outer base 12 can be shown. The outlet cover 1 of this example is configured such that a disc-shaped inner base 11 is rotatably fitted in a holding recess 124 provided in the outer base 12, and the outer base 12 is relatively 360 degrees relative to the inner base 11. Can be rotated.

  The inner base 11 is a resin disk integrally formed including the plug-like protrusions 111, 111. The inner surface 11 is a surface from which the plug-like protrusion 111 is protruded, that is, a back surface and an outer peripheral surface (radial direction) that contact the outlet flat surfaces 21, 31 described later. The engagement guide surface is inclined as a surface on the opposite side of the surface from which the plug-like protrusion 111 protrudes, that is, on the boundary between the front surface and the outer peripheral surface. 115 is formed. Further, on the front surface, the fitting cylinder 113 protrudes from the center, and four projections 112 are provided at intervals of 45 degrees in the circumferential direction so as to surround the fitting cylinder 113. The projections 112 in this example are hemispherical projections, and four projections 112 are provided at positions corresponding to square corners including sides parallel to the direction in which the plug-like projections 111 are arranged.

  The engaging step 114 is a portion where a holding protrusion 125 formed on the inner periphery of the holding recess 124 of the outer base 12 forms a groove, and the inner base 11 is engaged with the holding protrusion 125 so as to be held. In order to make the back surface of the inner base 11 and the back surface of the outer base 12 flush with each other, the depth of the engagement step 114 is equal to the thickness of the holding protrusion 125. The width of the engagement step 114 should be wider than that of the holding protrusion 125. However, in order to prevent the rotation of the outer base 12 with respect to the inner base 11, the outer peripheral surface of the engagement step 114 and the inner peripheral surface (radius of the holding protrusion 125) It is desirable that the width of the engagement step 114 is equal to the width of the holding protrusion 125 so that the peripheral surface of the engagement inward is in sliding contact.

  The fitting guide surface 115 is a part that makes it easy for the inner base 11 to get over the holding protrusion 125 because the inner base 11 is fitted into the holding recess 124 of the outer base 12. By fitting the inner base 11 into the holding recess 124, the clearance of the cross-sectional triangle formed by the inner surface of the holding recess 124 and the fitting guide surface 115 constitutes a space in which foreign matter that has entered the holding recess 124 is likely to accumulate and is retained. The foreign matter that has entered the recess 124 is collected, and the foreign matter stays in other narrow gaps so that the rotation of the outer base 12 relative to the inner base 11 is not hindered. The foreign matter collected in the clearance having the triangular cross-section is discharged from a die cutting hole 126 provided in the outer base 12.

  The outer base 12 is a resin board having a square shape when viewed from the front, is integrally formed including a ground hole covering surface 121 protruding from one side, and forms a continuous peripheral step 127 from the outer base 12 to the ground covering surface 121. . The peripheral step 127 is a step formed by forming an outer peripheral surface that is slightly smaller than the outer peripheral surface of the outer base 12 and the ground hole covering surface 121, and the plug-like protrusion 111 is connected to the two-pole outlet 2 (see FIG. 15 described later). See Fig. 11) or the plug insertion holes 22 and 32 of the three-pole outlet 3 (see Fig. 11 below), and when the back surfaces of the inner base 11 and the outer base 12 are brought into contact with outlet flat surfaces 21 and 31, which will be described later, A portion where the finger is caught on the outer periphery of the base 12 and the ground hole covering surface 121 is provided, and the outlet cover 1 is easily removed.

  The outer base 12 of this example has a holding recess 124 that is a disk-like recess equivalent to the inner base 11 on the back surface that contacts the outlet flat surfaces 21 and 31 described later. The holding recess 124 is provided with four holding protrusions 125 that protrude inward in the radial direction from the inner peripheral surface at an interval of 45 degrees in the circumferential direction, flush with the back surface of the outer base 12. The holding protrusions 125 in this example are arc-shaped protrusions when viewed from the back, and four holding protrusions 125 are provided in the alignment direction and the alignment orthogonal direction of the plug-like protrusions 111 in total. As described above, since the holding projection 125 is located at a position shifted by 45 degrees in the circumferential direction from the concave portion 122 engaged with the convex portion 112 of the inner base 11, the hemispherical convex portion 112 and the concave portion 122 may be engaged and rattled. The inner base 11 is pressed by two holding projections 125 that are separated from the recess 122 by 45 degrees in the circumferential direction, so that rattling of the inner base 11 can be suppressed.

  In addition, the outer base 12 of this example holds a fitting hole 123 having a circular cross section in the center of the rear surface of the holding recess 124 that makes sliding contact with the front surface of the inner base 11 at a position corresponding to each holding projection 125 of the holding recess 124. Each of the fan-shaped die holes 126 having a size including the protrusions 125 is penetrated toward the front surface of the outer base 12, and four recesses 122 are provided at intervals of 45 degrees in the circumferential direction so as to surround the fitting holes 123. The recess 122 in this example is a hemispherical recess having a larger radius than the described protrusion 112, and the same position as the protrusion 112, that is, a position corresponding to a corner of a square including a side parallel to the arrangement direction of the plug-like protrusions 111. 4 are provided.

  The inner base 11 has a fitting cylinder 113 projecting from the center of the front surface and fitted into the fitting hole 123 of the outer base 12 to project, and the whole is fitted into the holding recess 124 so that the engaging step 114 is held by the holding projection 125. By being engaged with the outer base 12, the outer base 12 is held rotatably. Thus, when the inner base 11 and the outer base 21 are relatively rotated, the outer peripheral surface of the inner base 11 and the inner peripheral surface of the holding recess 124 of the outer base 12 and the side surface of the fitting cylinder 113 of the inner base and the outer surface Since the inner peripheral surface of the fitting hole 123 of the base 12 is in sliding contact with each other, the outer base 12 can be stably rotated with respect to the inner base 11.

  The convex portion 112 that is a hemispherical protrusion and the concave portion 122 that is a hemispherical recess are engaged because the radius of the circle connecting the four concave portions 122 is the same as the radius of the circle connecting the four convex portions 112. . The engagement between the convex portion 112 and the concave portion 122 is such that the hemispherical protrusion fits into the hemispherical recess, so that the convex portion 112 slides within the concave portion 122 and the inner base 11 is rattled. Although there is a possibility, as described above, the rattling is suppressed by pressing the holding projection 125 shifted by 45 degrees in the circumferential direction. Further, for example, when the inner base 11 is rotated to the outer base 12 with its position fixed, the convex portion 112 gets over the peripheral edge of the concave portion 122 and the engagement between the two is released. At this time, the sense of resistance that the convex portion 112 gets over the peripheral edge of the concave portion 122 is a moderation feeling. That is, the convex part 112 and the concave part 122 constitute a moderation mechanism.

  As shown in FIGS. 10 and 11, the outlet cover 1 to be attached to the three-pole outlet 3 is plugged by inserting plug-like protrusions 111 and 111 until the backs of the inner base 11 and the outer base 12 are in contact with the outlet plane 31. The insertion holes 32 and 32 are closed, and the ground hole 33 is covered with the ground hole covering surface 121 of the outer base 12. In this example, since the ground hole 33 is positioned below the plug insertion holes 32, 32, the ground hole covering surface 121 of the outer base 12 faces downward, that is, in the direction in which the three-pole outlets 3 are arranged. Since the outlet plane 31 of the three-pole outlet 3 is sized to include the ground hole 33, the outer base 12 and the ground hole covering surface 121 fit within the outlet plane 31 and cover all three pole outlets 3 arranged closely. Even if 1 is worn, it does not get in the way of each other.

  As shown in FIGS. 12 and 13, the outlet cover 1 to be attached to the two-pole outlet 2 first changes the direction of the ground hole covering surface 121 to the horizontal direction by rotating the outer cover 12 with respect to the inner cover 11. 14 and 15, as shown in FIGS. 14 and 15, insert the plug-like projections 111, 111 until the backs of the inner base 11 and the outer base 12 are in contact with the outlet plane 21, and plug insertion holes 32, 32 are inserted. Block it. At this time, since the ground hole covering surface 121 is retracted in the lateral direction, if only the outer base 12 is provided, it is contained in the outlet plane 21. For this reason, even if the outlet cover 1 is attached to all the two-pole outlets 2 arranged in the nectar, they do not get in the way.

1 Outlet cover
11 base
111 Plug-like protrusion
112 Convex
12 Outer base
121 Ground hole cover surface
122 Recess 2 Two-pole outlet
21 Outlet plane
22 Plug insertion hole 3 Three-pole outlet
31 Outlet plane
32 Plug insertion hole
33 Ground insertion hole

Claims (2)

The outer base consists of an inner base that protrudes only from the plug-like projection and contacts the outlet plane, and an outer base that holds the inner base and is rotatable relative to the inner base in a plane parallel to the outlet plane. A part of the outlet cover with the ground hole covering surface protruding in parallel with the outlet plane. The outlet cover according to claim 1, wherein the inner base and the outer base are provided with two or more pairs of convex portions and concave portions that are engaged with each other in the rotation direction of the outer base with respect to the inner base.

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