JP2004014461A - Waterproof receptacle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent water from entering indoors from a through-hole of a wall surface for taking out a wire, even for the wall surface which can not prevent the entrance of rain water by a waterproof packing having a rainproof effect against the wall surface with a roughness of not more than 2 mm. <P>SOLUTION: The water proof receptacle comprises a receptacle body 1 with a tap blade insertion hole 52; a waterproof receptacle plate 2 formed in a shape of a box storing the receptacle body 1 inside, having an opening 2b at the side of the wall face H and an opening 2c making a tap blade insertion hole 52 open outward while facing itself downward formed to the lower surface side;a waterproof packing 108 formed so as to block the opening 2b of the wall surface side, having an opening 80 for inserting the wire taken out from the through-hole TH of the wall surface H and connected to the receptacle body 1; and a bushing 11 formed in a shape having a cylindrical part 111 extending from the opening 80 of the waterproof packing 108 into the through-hole TH of the wall face H, while surrounding the wire inserted into the opening 80. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a waterproof outlet.
[0002]
[Prior art]
Conventionally, when it is desired to take out a commercial power supply connector (outlet) from the outer wall of a building, the outlet is attached to a drip-proof plate having waterproof performance.
[0003]
FIG. 10 is a perspective view showing a conventional waterproof outlet attached to an outdoor wall H, and FIG. 11 is an exploded perspective view of the waterproof outlet.
[0004]
This waterproof outlet can be connected to two types of power plugs with and without a ground pin, and has a body 103 having an open front and lower surface, and an open rear and lower surface attached to the front of the body 103. And a lower cover 105 attached to a lower surface opening that is opened in a state where the cover 104 is attached to the body 103. Here, the side opposite to the wall surface H of the waterproof outlet plate 2 is the front surface, the surface attached to the wall surface H is the rear surface, and the side facing the ground is the lower surface. In FIG. 11, the upper side is the rear surface, the lower side is the front surface, and the right side is the lower surface. Corresponding.
[0005]
Although not shown, the inside of the body 103 is separated into upper and lower storage portions by partition walls, blade receiving springs 106a, 106b, and 106c are stored in the lower storage portion, and the upper storage portion further stores three in the left-right direction. The components of the connection terminal portion 107 for connecting the power supply line and the ground line of the power supply line to the respective storage rooms are stored in the respective storage rooms. Two insertion holes 30 for inserting a power supply line and a ground wire into the storage chamber are formed in the bottom surface of the storage chamber for the components of each connection terminal portion 107 from the lower surface side, and a release hole 31 described later in detail. Has been perforated. On both sides of the body 103, mounting pieces 33 are formed, in which insertion holes 32 through which fixing screws 38 for fixing the body 103 to the waterproof outlet plate 2 are inserted.
[0006]
In the cover 104, a storage section 40 and a storage chamber 41 corresponding to each storage section or storage chamber of the body 103 are separately formed by a partition wall 42. The inner bottom surface of the storage section 40 is an obliquely forwardly inclined surface, and a plurality of projections 44 are arranged in the center of the inner bottom surface in a lateral direction. In addition, the bottom surface of the storage portion of the blade receiving springs 106a, 106b, 106c (not shown) of the body 103 has an inclined rearwardly inclined surface, so that the blade receiving member formed when the cover 104 is attached to the body 103 is formed. The space under the springs 106a, 106b, 106c is widened. Also, a plurality of protrusions similar to the cover 104 are formed on the bottom surface of the storage portion of the blade receiving springs 106a, 106b, 106c of the body 103. Fitting holes 43 are formed in the partition walls 42 on both sides of the center of the cover 104. Fitting projections projecting from the body 103 are fitted into the fitting holes 43, and the cover 104 is attached to the body 103. It can be positioned and attached.
[0007]
The lower cover 105 is attached from below with the cover 104 attached to the body 103, and is provided with plate-shaped separation pieces 50 and 51 projecting from the back surface. The separation piece 50 separates left and right storage portions of the blade receiving springs 106a, 106b, 106c formed when the cover 104 is attached to the body 103. One storage space separated by the separation piece 50 is The storage space is narrow and the other storage space is wide, and the narrow storage space is referred to as a side storage space in the following description. The larger storage space is separated back and forth by a separation piece 51, and the storage spaces separated by the separation piece 51 are called a front storage part and a rear storage part, respectively. Here, blade receiving springs 106a and 106b to which a plug blade of a power plug is connected are stored in the front and rear storage portions, respectively, and a blade receiving spring 106c to which a ground pin of the power plug is connected is stored in a side storage portion. You. A flange piece 55 is provided on the outer peripheral surface of the lower cover 105 slightly below the upper surface, and the outer periphery of the opening side when the cover 104 is attached to the body 103 at the four corners on the back surface of the flange piece 55. A holding rib 54 for holding the surface in a wrapping manner is formed. On the front surface of the lower cover 105, a blade insertion hole 52 for inserting a blade of a power plug is formed corresponding to the front and rear storage portion, and a pin insertion hole for inserting an earth pin corresponding to the side storage portion. An insertion hole 52, 53 is formed in an arc shape so that the inserted blade and earth pin can be rotated by a predetermined angle.
[0008]
The blade receiving springs 106a and 106b housed in the front and rear housings respectively hold the blades of the power plug inserted through the blade insertion holes 52 formed in the front cover or the rear of the lower cover 105. The two blade receiving portions 60a received in the form are integrally formed, and the tip shape of each blade receiving portion 60a is formed in an arc shape corresponding to the shape of the blade insertion hole 52, and the blade is rotated. At this time, a locking dowel is formed to prevent the blade from coming off. That is, the blade receiving springs 106a and 106b constitute a retaining blade receiving spring. Further, the blade receiving spring 106c stored in the side storage portion includes a blade receiving portion 60b that receives the ground pin so as to sandwich it.
[0009]
The connection terminal portion 107 has a so-called quick-connecting terminal structure, and is housed in the storage room so as to cover the pair of lock springs 70, the release button 71, and the lock spring 70 which are respectively stored in the storage room of the body 103. The terminal wire 72 has a U-shaped terminal plate 72. The core wire of the power supply line inserted through the wire insertion hole 30 drilled in the bottom surface of the storage chamber is elastically sandwiched and connected between the locking spring 70 and the terminal plate 72. It is supposed to. When the power line is disconnected, when the release button 71 is pressed through the release hole 31, the release button 71 presses the lock spring 70, thereby acting to separate the lock spring 70 from the core wire of the power supply line. The line is coming off. The connection terminal portion 107 for connecting the ground line of the power supply line has the same structure. Note that the ground connection terminal portion 107 is connected to the ground connection terminal portion 107 so as to be clearly distinguished from other connection terminal portions 107. The color of the release button 71a is different from the color of the release button 71 of the other connection terminal 107. Connecting pieces 73 extend from the terminal plates 72, respectively, and are caulked to the corresponding blade receiving springs 106a to 106c by the connecting pieces 73.
[0010]
The waterproof outlet plate 2 has a box shape with an open rear surface (the side of the mounting surface to the wall surface H). The upper portion swells forward, and the outlet body 1 is housed in the swelling portion 20. In addition, the side surface shape of the bulging part 20 is a substantially triangular shape with the lower portion being higher, the front surface shape is rectangular, and the lower surface is open. A U-shaped hood 21 for protecting the area below the opening from rain is attached to the opening edge. On both sides of the inner bottom surface of the bulging portion 20, a boss 20b having a screw hole 20a for fixing the body 103 is formed. A hole 27 is formed on a lower front surface of the waterproof outlet plate 2 to expose a screw portion 62 integrally formed with a lead plate 61 described later. A positioning groove for the lead plate 61 is formed on an inner bottom surface of the lower portion. Is formed by a pair of convex ribs 28. An insertion hole 29 through which a fixing screw 26 is passed is formed in the center of the lower portion of the waterproof outlet plate 2, and a boss 20 c is formed at the upper end of the inner bottom surface of the bulging portion 20. A through hole 25 through which the fixing screw 26 passes is formed, and the fixing screw 26 is screwed through the insertion hole 29 and the through hole 25 to be attached to the wall surface H of the outlet.
[0011]
The lead plate 61 has one end bent in a U-shape to protrude forward, and forms a screw portion 62 having a screw hole 69 formed in the center piece of the U-shape portion. 10 is screwed with an earth screw 64 shown in FIG. 10, and a screw terminal 62 and the earth screw 64 constitute an earth terminal for earthing. An arc-shaped retaining piece 63 is formed on both sides of the front surface of the screw portion 62. When an earth screw 64 is screwed into the screw portion 62 to connect an earth wire, the earth wire is connected to the earth screw 61. It can be easily held between the screw portion 62. In addition, an insertion hole 66 for a fixing screw 65 for fixing the lead plate 61 to the case 2 and a notch 67 are formed on both sides of the screw portion 62.
[0012]
A central portion of the lead plate 61 is bent in a plurality of steps, and a wedge-shaped claw 68 projecting toward the outlet main body 1 is formed at one end of the other T-shaped tip. That is, the lead plate 61 is used to connect to the ground connection terminal 107. For this purpose, a portion of the body 103 where the ground connection terminal portion 107 is formed has a storage chamber having the same shape as the other connection terminal portion 107 and a lead plate connection terminal portion for connecting the claw piece 68 of the lead plate 61. A storage chamber for storing the components constituting 107a is formed. In this storage chamber, a lock spring 70a and a terminal plate 72a integrally formed with the terminal plate 72 are stored. An insertion hole 30a for inserting the claw piece 68 of the lead plate 61 is formed in the bottom surface of the storage chamber.
[0013]
Further, the blade insertion hole 52 and the pin insertion hole 53 are closed when the blade or the ground pin is not inserted. For this purpose, a door 34 that closes the blade insertion hole 52 and a leaf spring 35 that resiliently opens the door 34 to close the blade insertion hole 52 when not inserted are provided. The leaf spring 35 is fixed by a projection (a projection 44 in the case of the cover 104) protruding from the lower storage portion of the body 103 and the cover 104, and forms an elastic piece 36 that resiliently opens the door 34 when cut and raised. The door 34 is interposed between the leaf spring 35 and the blade receiving springs 106a, 106b, 106c, and has a closing piece 37 formed at the end to close the blade insertion hole 52, and the blade receiving spring 106a of the closing piece 37 is formed. , 106b, and 106c are formed in a tapered surface that is inclined toward the insulating piece 51 of the lower cover 105 toward the back so that the blade can be smoothly introduced.
[0014]
When the plug blade of the power plug is not inserted, the closing piece 37 comes into contact with the insulating piece 51 to close the plug blade insertion hole 52. The pin insertion hole 53 is closed when not in use by the door 34a and the leaf spring 35a in substantially the same manner. In the blade receiving spring 106c for grounding, the leaf spring 35a is slidably inserted from the front into a pair of vertical grooves formed facing the side surface of the lower housing portion of the body 103 and fixed. This makes it easy to attach the leaf spring 35a to a predetermined position. It is particularly effective in automatic assembling if the insertion direction of the leaf spring 35a matches the assembling direction. There is also an advantage that the size of the leaf spring 35a can be reduced as compared with the case of press-fitting the rib 44. Further, in order to position the door 34a for closing the earth pin insertion hole 53, both sides perpendicular to the operating direction of the door 35a are slightly attached to side storage portions formed when the body 103 is covered with the cover 104. A guide portion is formed to be held while being sandwiched with a gap therebetween, so that the play of the door 35a is reduced.
[0015]
However, when the guide portion 46 is formed over the body 3 and the cover 4, a malfunction of the door 35 a may occur due to a warp deformation of the body 103 or the cover 104. The guide portion is tapered on the side of the insertion hole 53 of the ground pin, and the width is increased toward the insertion side. Since the doors 35 and 35a for closing the earth pin insertion hole 53 when they are not inserted are provided in this manner, water does not intrude from the insertion hole 53 and foreign matter does not enter.
[0016]
Hereinafter, the procedure for assembling the outlet will be briefly described. First, the lower plate spring 35, the ground-side plate spring 35a, the locking spring 70, the release button 71, and the blade receiving springs 106a, 106c integrated with the terminal plate 72 are integrated into the body 103. The front leaf spring 35 is attached to 104, and the cover 104 is attached to the body 103.
[0017]
In this state, the doors 34, 34a are interposed between the leaf springs 35, 35a and the blade receiving springs 106a to 106c, and then the insulating pieces 50, 51 are inserted between the blade receiving springs 106a to 106c. Then, the lower cover 105 is attached. The outlet main body 1 assembled in this manner is inserted into the bulging portion 20 from the rear surface of the waterproof outlet plate 2, and at this time, the lower cover 105 of the outlet main body 1 is fitted into the opening of the bulging portion 20, and the outlet main body 1 is fixed. By fixing the fixing screw 38 to the screw hole 20a of the boss 20b of the waterproof outlet plate 2 in this state, the mounting of the outlet body 1 to the waterproof outlet plate 2 is completed. A cover 104 and a lower cover 105 are sandwiched and fixed between 103 and the waterproof outlet plate 2. The lower cover 105 is prevented from coming off from the opening of the bulging portion by the flange piece 55.
[0018]
In this state, the screwed portion 62 of the lead plate 61 is exposed from the hole 27, the claw 68 is inserted into the insertion hole 30 a to connect the lead plate 61 to the ground connection terminal portion 7, and the lead plate 61 is screwed with the screw 65. Fix to the waterproof outlet plate 2. Then, when the ground screw 64 is screwed into the screw portion 62 from the front surface side of the waterproof outlet plate 2, the assembly of the outlet is completed. In the above description, the lead plate 61 is fixed with a screw. However, the lead plate 61 may be fixed with a driving stud, which is particularly advantageous for automatic assembly. Further, in the above case, the screw is fixed on both sides of the screw portion 62 of the lead plate 61. However, the insertion hole 22 for inserting the tip of the lead plate 61 is formed in the waterproof outlet plate 2, and the screw is fixed. Is made one location, assembly becomes easier.
[0019]
When the outlet is mounted on the wall H, the outlet is mounted so that the lower surface of the lower cover 105 faces rearward. In this case, the waterproof packing 108 is further fitted on the rear surface of the waterproof outlet plate 2 and the mounting frame 109 is used. The waterproof packing 108 has a groove formed on the outer peripheral edge of the front surface thereof for fitting a rib 2a provided around the rear surface of the waterproof outlet plate 2 and is fixed to the waterproof outlet plate 2 by fitting the rib 2a into the groove.
[0020]
A rectangular opening 80 is formed in a portion of the waterproof packing 108 corresponding to the insertion hole 30 and the release hole 31 of the body 103 so that a power supply line or the like can be connected from the rear side. A hole 81 to be inserted is formed. The mounting frame 109 has a rectangular shape, and is mounted on the wall H by screwing a box screw through a mounting hole 90 into an embedding box embedded in the wall H. This outlet is fixed to the screw hole 91 of the mounting frame 109. The screw 26 is attached by screwing.
[0021]
[Problems to be solved by the invention]
By the way, in the conventional waterproof outlet as described above, if the unevenness of the wall surface is about 2 mm or less, a waterproof packing on the wall surface can provide a rainproof effect. However, there is a problem that the rainproof effect can no longer be obtained if the unevenness of the wall becomes about 10 mm. In this case, it is necessary to apply a caulking material around the waterproof outlet to prevent a portion where water enters between the waterproof packing and the wall surface, resulting in a problem that extra work time and cost are required.
[0022]
The present invention has been made in view of the above circumstances, and even if a wall cannot be rain-proofed with a waterproof packing having a rain-proof effect on irregularities of about 2 mm or less, the wall is connected to the outlet main body. It is an object of the present invention to provide a waterproof outlet that can prevent water from entering the indoor side from a through hole in a wall surface for extracting an electric wire.
[0023]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a waterproof outlet according to the first aspect of the present invention, which has an outlet main body having a plug blade insertion port, a box-shaped housing for accommodating the outlet main body inside, and an opening on a wall surface side. A waterproof outlet plate having an opening on the lower surface side that faces the outside with the plug blade insertion hole facing downward, and a waterproof hole formed on the wall surface of the waterproof outlet plate so as to close the opening on the wall side, and a through hole in the wall surface. A waterproof packing having an opening for inserting an electric wire drawn out of the waterproof main body and connected to the outlet body, and surrounding the electric wire inserted into the opening of the waterproof packing, the wall surface is formed from the opening side of the waterproof packing. And a bushing formed in a shape having a cylindrical portion that extends and press-fits into the through hole.
[0024]
According to a second aspect of the present invention, in the waterproof outlet according to the first aspect, the bushing has a flange portion for closing an opening of the waterproof packing at an end portion of the tubular portion on the opening side.
[0025]
According to a third aspect of the present invention, in the waterproof outlet according to the second aspect, a low rib is provided on an outer peripheral edge of the opening of the waterproof packing to abut on a surface of the flange and close the opening of the waterproof packing together with the flange. Are protruded toward the wall surface side.
[0026]
According to a fourth aspect of the present invention, in the waterproof outlet according to the second aspect, the bushing has a concave portion having an inner diameter larger than an inner diameter of the tubular portion between the tubular portion and the flange portion. A hole having the same diameter as the inner diameter of the concave portion is formed in the flange.
[0027]
According to a fifth aspect of the present invention, in the waterproof outlet according to the first aspect, a high ridge is formed on an outer peripheral edge of the opening of the waterproof packing so as to project toward a wall surface, and a part of the bushing is formed by the ridge. It is characterized by being inserted into.
[0028]
According to a sixth aspect of the present invention, in the waterproof outlet according to any one of the first to fifth aspects, a pleated rib is provided around the outer peripheral surface of the tubular portion of the bushing.
[0029]
BEST MODE FOR CARRYING OUT THE INVENTION
(1st Embodiment)
1 is a cross-sectional view of a waterproof outlet according to a first embodiment of the present invention attached to a wall, FIG. 2 is a perspective view of the waterproof outlet, and FIG. 3 is a configuration diagram of a bushing used in the waterproof outlet. FIG. 4 is a view for explaining the installation of the waterproof outlet, and FIG. 5 is a view for explaining the effect of the concave portion of the bushing.
[0030]
As shown in FIGS. 1 and 2, the waterproof outlet of the first embodiment is formed in an outlet body 1 having a blade insertion hole 52 and a box-like shape for housing the outlet body 1 therein. A waterproof outlet plate 2 having an opening 2b and having an opening 2c facing the outside with the blade insertion hole 52 facing downward on the lower surface side, and a box for closing the opening 2b on the wall surface side of the waterproof outlet plate 2 Waterproof packing 108 having an opening 80 through which an electric wire (W in FIG. 5) drawn out of the through hole TH of the wall surface H and connected to the outlet main body 1 is inserted, a lead plate 61 and a ground screw 64 are provided in the same manner as the conventional waterproof outlet shown in FIGS. 10 and 11, and a difference from the conventional waterproof outlet is that a waterproof packing 108 is provided. A bushing 11 formed in a shape having a cylindrical portion 111 that extends from the opening 80 side of the waterproof packing 108 into the through hole TH of the wall H and press-fits in a state surrounding the electric wire W inserted into the opening 80. Have. In addition, a low rib 80a that abuts against a surface (left surface in FIG. 1) of a flange portion 113 to be described later and closes the opening 80 of the waterproof packing 108 together with the flange portion 113 is provided on the outer peripheral edge of the opening 80 of the waterproof packing 108. It protrudes toward the side.
[0031]
The bushing 11 is made of, for example, a soft vinyl chloride resin (or an elastomer or the like). The size of the tubular portion 111 is set so that the outer diameter is about 19 mm and the inner diameter is about 15 mm. In the hole TH area, as shown in FIG. 3, a saw blade which rises vertically on the opening 80 side (the left side in FIG. 3B) of the waterproof packing 108 and is tapered toward the inside (the right side) of the wall surface H is inclined. A plurality of rib-shaped ribs 111a are provided around the circumference.
[0032]
Further, the bushing 11 is provided with a flange 113 for closing the opening 80 of the waterproof packing 108 on the end side of the tubular portion 111 on the opening 80 side. The flange portion 113 is formed, for example, in a rectangular shape having a thickness of about 2 mm and a size of about 58 mm × 58 mm.
[0033]
Further, a recess 112 having an inner diameter of about 27 mm larger than the inner diameter of the tubular portion 111 is provided between the tubular portion 111 and the flange 113 of the bushing 11, and a hole having the same diameter as the inner diameter of the recess 112 is formed. It is formed on the flange 113. The size of the concave portion 112 is set such that the concave portion 112 bulges from the flange portion 113 toward the cylindrical portion 111 by about 5.5 mm, and the depth thereof becomes approximately 4.5 mm in accordance with the thickness of the flange portion 113.
[0034]
The cylindrical portion 111, the flange portion 113, and the concave portion 112 are integrally formed, and are dimensioned so that the total length is about 47.5 mm.
[0035]
Next, as shown in FIGS. 1 and 4, a procedure for attaching the waterproof outlet having the above-described configuration to a wall H having a joint J having a depth of about 10 mm on an outer wall having a thickness of about 20 mm will be described. First, the mounting frame 109 is screwed to the wall H while the electric wire W drawn out of the through hole TH of the wall H is inserted into the mounting frame 109. Next, the tubular portion 111 of the bushing 11 is turned toward the wall surface H, and the tubular portion 111 of the bushing 11 is pressed into the through hole TH while the electric wire W is inserted through the tubular portion 111. Next, a set of the integrally assembled outlet main body 1, waterproof outlet plate 2, and waterproof packing 108 is screwed to the mounting frame 109 in the same manner as in the related art.
[0036]
As described above, according to the first embodiment, in a state where the cylindrical portion 111 of the bushing 11 surrounds the electric wire W inserted into the opening 80 of the waterproof packing 108, the penetration of the wall H from the opening 80 side of the waterproof packing 108 is performed. Since it extends into the hole TH and is press-fitted, even on a wall surface that cannot be rain-proofed with a waterproof packing having a rain-proof effect on irregularities of about 2 mm or less, the electric wire W connected to the outlet main body 1 can be used. Water can be prevented from entering the indoor side from the through hole TH of the wall surface H for drawing out.
[0037]
The pleat-shaped rib 111a provided on the outer peripheral surface of the cylindrical portion 111 of the bushing 11 serves as a breakwater against rainwater that tends to enter the indoor side from the through hole TH, so that rainwater enters the indoor side. In addition, since the frictional resistance is reduced as compared with a structure in which the whole is tapered, the cylindrical portion 111 of the bushing 11 can be easily pressed into the through hole TH.
[0038]
Since the flange 113 of the bushing 11 closes the opening 80 of the waterproof packing 108, it is possible to prevent rainwater from entering the outlet main body 1. In the first embodiment, the low-profile rib 80a facing the wall surface is provided around the outer peripheral edge of the opening 80 of the waterproof packing 108, so that the ingress of rainwater into the outlet main body 1 can be more appropriately prevented. In addition, the manufacturing of the waterproof packing 108 is facilitated, and the workability for connecting the electric wire W without being hindered by the ribs 80a is improved.
[0039]
As shown in FIG. 5B, the recess 112 having a diameter larger than the inner diameter of the tubular portion 111 exists between the tubular portion 111 and the flange 113 of the bushing 11, so that the configuration shown in FIG. As compared with the structure having no concave portion as shown in FIG. That is, in the structure having no concave portion shown in FIG. 5A, the accommodation of the electric wire W becomes considerably cramped, whereas in the structure having the concave portion 112 as in the first embodiment shown in FIG. Therefore, the electric wire W is easily accommodated.
[0040]
(2nd Embodiment)
FIG. 6 is a cross-sectional view of the waterproof outlet according to the second embodiment of the present invention attached to a wall, and FIG. 7 is a configuration diagram of a bushing used in the waterproof outlet.
[0041]
As a difference from the first embodiment, the waterproof outlet of the second embodiment is provided with a bushing 12 having a different structure in place of the bushing 11, as shown in FIGS.
[0042]
The bushing 12 is also made of, for example, a soft vinyl chloride resin (or an elastomer), and surrounds the electric wire W inserted into the opening 80 of the waterproof packing 108. It has a tubular portion 121 that extends and press-fits inside.
[0043]
In addition, the bushing 12 is provided with a flange portion 123 on the end side (right end in FIG. 7B) of the tubular portion 121 on the opening 80 side of the waterproof packing 108 and a stopper portion 124 near the flange portion 123. I have. Both the flange 123 and the stopper 124 are formed, for example, in a circular shape having a thickness of about 3 mm and an outer diameter of about 33 mm.
[0044]
The tubular portion 121 is formed in a tapered shape such that the outer diameter of the tip of the waterproof packing 108 on the opening 80 side (the left side in FIG. 3B) is about 25 mm and the outer diameter near the stopper 124 is about 25 mm. The inner diameter of the cylindrical portion 121 is set to about 16 mm.
[0045]
The cylindrical portion 121, the flange portion 123, and the stopper portion 124 are integrally formed, and are dimensioned so that the total length is about 37 mm. The hole on the press-fit side of the bushing 12 has an oval shape smaller than the inner diameter of the cylindrical portion 121, as shown in FIG. The waterproof outlet having such a configuration is also attached to the wall surface in the same manner as in the first embodiment.
[0046]
As described above, according to the second embodiment, in a state where the tubular portion 121 of the bushing 12 surrounds the electric wire W inserted into the opening 80 of the waterproof packing 108, the penetration of the wall H from the opening 80 side of the waterproof packing 108 is performed. Since it extends into the hole TH and is press-fitted, even on a wall surface that cannot be rain-proofed with a waterproof packing having a rain-proof effect on irregularities of about 2 mm or less, the electric wire W connected to the outlet main body 1 can be used. Water can be prevented from entering the indoor side from the through hole TH of the wall surface H for drawing out.
[0047]
Further, since the stopper portion 124 is provided inside the flange portion 123, the stopper portion 124 hits the surface of the wall surface H, so that the entire bushing 12 can be prevented from being excessively pressed into the through hole TH.
[0048]
Further, as shown in FIG. 6, a low-height rib 80 a facing the wall surface is provided around the outer peripheral edge of the opening 80 of the waterproof packing 108, so that rainwater can more appropriately enter the outlet main body 1. In addition to this, the manufacturing of the waterproof packing 108 is facilitated, and the workability for connecting the electric wire W without being disturbed by the ribs 80a is improved.
[0049]
(Third embodiment)
FIG. 8 is a cross-sectional view of the waterproof outlet according to the third embodiment of the present invention as mounted on a wall, and FIG. 9 is a perspective view of the waterproof outlet.
[0050]
The waterproof outlet of the third embodiment is different from the first embodiment in that a high ridge 80b protruding toward the wall surface H is formed on the outer peripheral edge of the opening 80 of the waterproof packing 108 as shown in FIGS. Is formed, and a part of the bushing 13 is inserted into the protruding strip 80b.
[0051]
The bushing 13 is also made of, for example, a soft vinyl chloride resin (or an elastomer), and surrounds the electric wire W inserted into the opening 80 of the waterproof packing 108 in the same manner as in the first embodiment. A cylindrical portion 111 extending from the side into the through hole TH of the wall surface H and being press-fitted. In the through hole TH region on the outer peripheral surface of the cylindrical portion 111, a plurality of saw-toothed fold-shaped ribs 111a are formed. Is established. Further, the bushing 13 is provided with a flange 133 inserted into the protruding strip 80b at an end of the tubular portion 111 on the opening 80 side.
[0052]
Even in the waterproof outlet having such a configuration, in the state where the tubular portion 111 of the bushing 13 surrounds the electric wire W inserted into the opening 80 of the waterproof packing 108, the through hole of the wall H extends from the opening 80 side of the waterproof packing 108. The wire W connected to the outlet main body 1 is drawn out even if the wall cannot be rain-proofed with a waterproof packing having a rain-proof effect on irregularities of about 2 mm or less because the wall extends and press-fits into the TH. Water can be prevented from entering the indoor side from the through hole TH of the wall surface H.
[0053]
A high ridge 80b projecting toward the wall surface H is formed on the outer peripheral edge of the opening 80 of the waterproof packing 108, and a part of the bushing 13 is inserted into the ridge 80b. Accordingly, it is possible to preferably prevent rainwater from entering the outlet main body 1.
[0054]
【The invention's effect】
As is apparent from the above description, the waterproof outlet according to the first aspect of the present invention has an outlet main body having a plug blade insertion hole, a box-shaped housing for housing the outlet main body, and an opening on the wall side. A waterproof outlet plate having an opening on the lower surface side that faces the outside with the plug blade insertion hole facing downward, and formed into a shape that closes the opening on the wall surface side of the waterproof outlet plate. A waterproof packing having an opening through which an electric wire drawn out from the through hole and connected to the outlet main body is inserted, and a state in which the electric wire inserted into the opening of the waterproof packing is surrounded, from the opening side of the waterproof packing. A bushing formed in a shape having a cylindrical portion that extends and press-fits into the through hole of the wall surface, so that the cylindrical portion of the bushing is Waterproof that has a rainproof effect against irregularities of about 2 mm or less on the wall by extending and pressing into the through hole of the wall from the opening side of the waterproof packing while surrounding the electric wire inserted into the opening of the wall Even on a wall surface that cannot be protected from rain by packing, water can be prevented from entering the indoor side from a through hole in the wall surface for drawing out an electric wire connected to the outlet main body.
[0055]
According to a second aspect of the present invention, in the waterproof outlet according to the first aspect, the bushing has a flange portion for closing the opening of the waterproof packing at an end portion of the cylindrical portion on the opening side. Blocks the opening of the waterproof packing, so that rainwater can be prevented from entering the outlet main body.
[0056]
According to a third aspect of the present invention, in the waterproof outlet according to the second aspect, a low rib is provided on an outer peripheral edge of the opening of the waterproof packing to abut on a surface of the flange and close the opening of the waterproof packing together with the flange. Is projected toward the wall surface side, so that rainwater can be more appropriately prevented from entering the outlet main body side. Further, the manufacture of the waterproof packing is facilitated, and the workability for connecting the electric wires without being disturbed by the ribs is improved.
[0057]
According to a fourth aspect of the present invention, in the waterproof outlet according to the second aspect, the bushing has a concave portion having an inner diameter larger than an inner diameter of the tubular portion between the tubular portion and the flange portion. Since a hole having the same diameter as the inner diameter of the concave portion is formed in the flange portion, an extra space can be secured by the concave portion larger than the inner diameter of the cylindrical portion, which communicates flush with the hole of the flange portion. In addition, it is possible to improve the accommodation of the electric wire.
[0058]
According to a fifth aspect of the present invention, in the waterproof outlet according to the first aspect, a high ridge is formed on an outer peripheral edge of the opening of the waterproof packing so as to project toward a wall surface, and a part of the bushing is formed by the ridge. Since it is inserted into the inside, the intrusion of rainwater into the outlet main body side can be suitably prevented by the ridges.
[0059]
According to a sixth aspect of the present invention, in the waterproof outlet according to any one of the first to fifth aspects, a fold-like rib is provided around an outer peripheral surface of the cylindrical portion of the bushing. Since the fold-like ribs provided on the outer peripheral surface of the portion serve as a breakwater against rainwater that tends to enter the indoor side from the through hole, it is possible to suitably prevent rainwater from entering the indoor side. . Further, since the frictional resistance is reduced as compared with the structure in which the whole is tapered, the cylindrical portion of the bushing can be easily pressed into the through hole.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a waterproof outlet according to a first embodiment of the present invention as viewed on a wall.
FIG. 2 is a perspective view of the waterproof outlet.
FIG. 3 is a configuration diagram of a bushing used for the waterproof outlet.
FIG. 4 is an explanatory view of mounting the waterproof outlet.
FIG. 5 is a view for explaining an effect of a concave portion of the bushing.
FIG. 6 is a cross-sectional view of a waterproof outlet according to a second embodiment of the present invention as viewed on a wall.
FIG. 7 is a configuration diagram of a bushing used in the waterproof outlet.
FIG. 8 is a cross-sectional view of a waterproof outlet according to a third embodiment of the present invention as viewed on a wall.
FIG. 9 is a perspective view of the waterproof outlet.
FIG. 10 is a perspective view showing a conventional waterproof outlet mounted on an outdoor wall surface.
FIG. 11 is an exploded perspective view of the waterproof outlet.
[Explanation of symbols]
1 Outlet body
2 Waterproof outlet plate
108 Waterproof packing
11,12 bushing
111, 121 cylindrical part
111a rib
112 recess
113,123 collar
124 stopper

Claims (6)

An outlet body having a plug blade insertion port,
A waterproof outlet plate formed in a box shape for housing the outlet body therein, having an opening on the wall surface side, and having an opening on the lower side surface facing the outside with the plug blade insertion opening facing downward,
A waterproof packing formed in a shape to close an opening on the wall surface side of the waterproof outlet plate, and having an opening for inserting an electric wire drawn out from a through hole of the wall surface and connected to the outlet body,
A bushing formed in a shape having a cylindrical portion that extends from the opening side of the waterproof packing into the through hole of the wall surface and press-fits in a state surrounding the electric wire inserted into the opening of the waterproof packing. Characterized by a waterproof outlet. 2. The waterproof outlet according to claim 1, wherein the bushing has a flange for closing an opening of the waterproof packing at an end of the tubular portion on the opening side. 3. A low rib that abuts against the surface of the flange and closes the opening of the waterproof packing together with the flange to protrude toward the wall surface at an outer peripheral edge of the opening of the waterproof packing. Item 2. The waterproof outlet according to item 2. The bushing has a concave portion having an inner diameter larger than the inner diameter of the cylindrical portion between the cylindrical portion and the flange portion, and a hole having the same diameter as the inner diameter of the concave portion is formed in the flange portion. The waterproof outlet according to claim 2, wherein: The waterproof outlet according to claim 1, wherein a high protruding strip protruding toward a wall surface is formed on an outer peripheral edge of the opening of the waterproof packing, and a part of the bushing is inserted into the protruding strip. . The waterproof outlet according to any one of claims 1 to 5, wherein a pleated rib is provided on an outer peripheral surface of the tubular portion of the bushing.

Images