JP4618200B2 - Waterproof plate - Google Patents

Description

  The present invention relates to a waterproof plate disposed on the front side of a wiring device such as a switch embedded in a construction material.

  Conventionally, as shown in FIG. 10, a waterproof plate disposed on the front side of the switch 55 to protect a wiring device (for example, the switch 55) embedded in a construction material such as an outer wall from water and dust. (For example, refer to Patent Document 1). This waterproof plate includes a synthetic resin plate 41 formed in the shape of a rectangular plate attached to the front side of an embedded wiring device mounting frame 58 (hereinafter referred to as mounting frame 58) to which the switch 55 is attached. In the center of the plate 41, an opening 45 is provided for exposing the operation portion 55a of the switch 55 to the front side. Further, on the back surface of the plate 41, a rib 53 protruding to the back surface side is integrally provided around the opening 45, and a rainproof cover 42 having a square shape in plan view is formed in a frame formed by the rib 53. Be placed.

  The rainproof cover 42 is formed of a transparent elastic material, and an operation protrusion 50 that protrudes to the front side is provided at a portion corresponding to the opening 45 of the plate 41. Then, after the rainproof cover 42 is disposed in the frame formed by the ribs 53 on the back surface of the plate 41 with the operation protrusion 50 of the rainproof cover 42 exposed to the front surface side through the opening 45 of the plate 41, the back surface side is further disposed. In the state where the rectangular frame-shaped pressing plate 43 having the opening 52 in the center is brought into elastic contact with the rainproof cover 42 and in contact with the end surface of the rib 53, the plate 41 and the pressing plate 43 are bonded by, for example, ultrasonic heat welding. The rainproof cover 42 is sandwiched between the plate 41 and the presser plate 43 by fixing.

  The waterproof plate includes a rectangular frame-shaped packing 44 having an opening 56 at the center, and a groove 54 is provided on the front surface side of the packing 44 over the entire circumference. Then, when the ribs 57 provided on the outer peripheral edge of the back surface side of the plate 41 are inserted into the grooves 54 of the packing 44, the plate 41 is screwed to the mounting frame 58 attached to the outer wall via the fixing screw 49. A packing 44 is sandwiched between the plate 41 and the outer wall.

  In the state where the waterproof plate is attached to the outer wall as described above, the operation portion 55a of the switch 55 is disposed in a space that can be formed on the back side of the operation protrusion portion 50 of the rainproof cover 42 (FIG. 10B). When the operation protrusion 50 is pushed from the front side, the operation protrusion 50 is deformed and the operation portion 55a of the switch 55 is also pushed, and the switch 55 can be pushed.

The plate 41 is provided with screw insertion holes 46 through which the fixing screws 49 are inserted at both ends in the longitudinal direction with the opening 45 therebetween, and the fixing screws 49 are inserted into the screw insertion holes 46. When screwing into a screw hole (not shown) of the mounting frame 58, a screw packing 48 is inserted between the fixing screw 49 and the screw insertion hole 46 to waterproof the gap between the fixing screw 49 and the screw insertion hole 46. The sex is secured.
Japanese Patent Laid-Open No. 63-161806 (second page and FIGS. 1 and 2)

  In the above-described waterproof plate, when the operation protrusion 50 of the rainproof cover 42 is pushed from the front side, the operation protrusion 50 is deformed and the operation part 55a of the switch 55 is also pushed, and the switch 55 can be pushed. . However, since the rainproof cover 42 is sandwiched between the plate 41 and the pressing plate 43 and the bending allowance when the operation protruding portion 50 is pressed is small, in order to perform the switching operation of the operating portion 55a. It was necessary to push the operation protrusion 50 with a large force.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a waterproof plate capable of reliably operating a switch with a small force.

The invention of claim 1 has an opening for exposing the operation part of the wiring device embedded in the construction material to the front side, a plate disposed on the front side of the wiring device, and an elastic material A cover that protrudes to the front side through the opening at the portion corresponding to the opening, is attached to the back of the plate and closes the opening, and is formed of an elastic material, and the back of the plate And a seal sandwiched between the surface and the construction surface, and a seal portion that is in close contact with the plate is formed on the outer periphery of the cover over the entire circumference, and between the protrusion and the seal portion in the cover In addition, a flexible bellows-shaped flexible portion that is flexible in the direction in which the operation portion is pushed is formed over the entire circumference, and a rib that protrudes toward the operation portion is provided on a portion facing the operation portion on the inner surface of the protrusion. At least one is provided .

The invention according to claim 2 is characterized in that the cover and the packing are integrally formed.

In the invention of claim 3 , the opening is formed adjacent to a screw boss portion having an insertion hole through which a fixing screw for fixing the plate to the mounting frame for the embedded wiring device is inserted. A fitting recess that fits the screw boss part is provided at the site corresponding to the screw boss part, and an end part on the back side of the fitting recess is extended inward to form a contact part that comes into contact with the bottom surface of the screw boss part. In addition, an opening hole smaller than the outer diameter of the screw portion of the fixing screw is provided in the contact portion.

  According to the first aspect of the present invention, the shape between the protruding portion of the cover and the seal portion is formed into a bellows shape having flexibility in the direction of pressing the operation portion of the wiring device, and the protruding portion of the cover is pushed. In such a case, the bellows portion bends according to the deformation of the cover, so that the amount of deformation of the protruding portion can be increased, and the operation portion of the wiring device can be pushed. Therefore, the wiring device can be reliably operated with a small force, and the operability is improved.

Furthermore, since the contact area between the operating portion and the protruding portion can be reduced by providing the rib, the protruding portion can be prevented from sticking to the operating portion. Therefore, when the hand is released from the protruding portion of the cover, the cover can be reliably returned to the state before the pushing operation, and the operability is improved.

According to the invention of claim 2 , since the cover and the packing are integrally formed, the number of parts and the number of assembling steps can be reduced, and the cost can be reduced. Further, by integrally molding the cover and the packing, there is no possibility that water or dust enters, and there is an effect that the waterproofness and dustproofness are improved. Furthermore, since the cover and packing are integrally molded, there is no need for a space for sandwiching the cover between the plate and the pressing plate or for heat-sealing the plate and the pressing plate as in the past. There is an effect that the width of the bellows shape of the cover can be increased by using.

According to the invention of claim 3, the mounting frame for the embedded wiring apparatus is standardized by JIS or the like, and the pitch of the insertion holes provided in the waterproof plate attached to the mounting frame is also standardized. . Therefore, by forming the opening portion adjacent to the screw boss portion having the insertion hole, the opening portion can be enlarged and the protruding portion of the cover exposed from the opening portion can be enlarged. As a result, it is possible to increase the cover pressing operation area and to improve the operability.

  Further, the end of the back side of the fitting recess of the cover is extended inward to form an abutting portion, and this abutting portion tightens the fixing screw to thereby fix the plate and the mounting frame for the embedded wiring device. Therefore, there is an effect that it is possible to prevent water from entering from the contact portion between the opening of the plate and the protrusion of the cover. Furthermore, an opening hole provided in the contact portion is formed to be smaller than the outer diameter size of the screw portion of the fixing screw, and when the fixing screw is inserted into this opening hole, a restoring force that attempts to return the hole diameter to the contact portion. Therefore, the screw portion and the contact portion can be brought into close contact with each other, and there is an effect that water from the screw portion can be prevented. Further, since it is possible to prevent water from entering the threaded portion without using the conventionally used screw packing, the screw packing can be reduced, and the cost can be reduced.

(First embodiment)
1st Embodiment is described based on FIGS. 1-6, 8 and 9. FIG. The waterproof plate according to the present invention is disposed on the front side of a wiring device (for example, the switch 26) embedded in a construction material such as an outer wall, and protects the switch 26 (wiring device) from water and dust. Used for. 8 and 9 are drawings of the waterproof plate of the second embodiment, but the first embodiment and the second embodiment are other than the structure in which the cover 2 and the packing 3 are integrally molded. The configuration is the same, and the method for attaching the waterproof plate will be described with reference to FIGS.

  As shown in FIG. 1, the waterproof plate includes a plate 1, a cover 2, and a packing 3 as main components. The plate 1 is made of a synthetic resin molded product formed in a rectangular plate shape, and an opening window 5 (opening portion) for exposing the handle portion 26a (operating portion) of the switch 26 to the front side is provided in the center of the plate 1. It has been. Further, on both sides in the longitudinal direction of the plate 1, arc-shaped depressions 27 are formed at substantially the center in the width direction so as to face the opening window 5, and the plate 1 is embedded at the bottom of each depression 27. Screw boss portions 6 each having an insertion hole 7 through which a fixing screw 9 for attachment to the attachment frame 4 (hereinafter referred to as the attachment frame 4) is inserted are provided. Further, ribs 8 projecting toward the packing 3 are provided on the outer peripheral edge on the back side of the plate 1 so as to project over substantially the entire circumference. A cover 2 made of a transparent synthetic resin (for example, soft vinyl chloride) having elasticity and translucency is attached to the plate 1 from the back side (see FIG. 1).

  As shown in FIG. 4, the cover 2 is formed in a vertically long quadrilateral shape when viewed from the front, and a portion corresponding to the opening window 5 of the plate 1 is projected to the front side so that the operation projecting portion 10 (projection). Part). Further, on the outer peripheral edge of the cover 2, a seal piece 11 (seal part) whose outer edge protrudes toward the back surface is formed over the entire circumference of the cover 2. 11 is closely attached. Further, as shown in FIG. 5B, a bellows-shaped flexible portion 12 that meanders in the vertical direction from the operation protrusion 10 toward the seal piece 11 is formed between the operation protrusion 10 and the seal piece 11. It has flexibility with respect to the force which pushes the operation protrusion part 10 to an up-down direction. Further, fitting holes 14 into which the respective screw bosses 6 are fitted are respectively formed in portions corresponding to the screw bosses 6 of the plate 1. As shown in FIG. 5 (c), a contact surface 16 is formed in the fitting hole 14 so as to contact the bottom surface of the screw boss portion 6 of the plate 1 by narrowing the opening edge on the back side inward. Further, the abutment surface 16 is provided with a screw insertion hole 15 having a hole diameter smaller than the outer diameter of the threaded portion 9a of the fixing screw 9. And the packing 3 formed with the synthetic resin (for example, soft vinyl chloride etc.) which has elasticity is attached from the back surface side of this cover 2 and the plate 1 (refer FIG. 1).

  As shown in FIG. 1, the packing 3 is formed in a rectangular frame shape having an opening window 20 at the center, and an insertion groove 17 for inserting the rib 8 of the plate 1 is provided on the entire front surface. ing. Further, on the front side of the packing 3, a protruding piece 19 protruding toward the cover 2 is provided between the insertion groove 17 and the opening window 20 so as to protrude over the entire circumference. The protruding piece 19 engages with the seal piece 11 of the cover 2, and the upper and lower protruding pieces 19 are formed with engaging grooves 18 a and 18 b at portions corresponding to the fitting holes 14 of the cover 2, respectively.

  Here, the metal mounting frame 4 to which the switch 26 is attached will be described with reference to FIG. The mounting frame 4 is standardized by JIS or the like, and is formed in a rectangular frame shape having an opening window 21 for exposing the switch 26 to the front side at the center. At both ends of the mounting frame 4 in the width direction, elongated plate-like projecting pieces 28 projecting toward the rear surface side are provided, and each projecting piece 28 has a set of two attachments for attaching the switch 26. Three sets of holes 22 are arranged in parallel in the vertical direction. In addition, long holes 23 through which fixing screws (not shown) for fixing the mounting frame 4 to an embedding box (not shown) or the like are inserted are provided on both sides in the longitudinal direction with the opening window 21 therebetween. Furthermore, screw holes 24 into which the fixing screws 9 for fixing the waterproof plate according to the present invention are screwed are provided at both ends in the longitudinal direction from the respective long holes 23. Further, an insulating cover 13 having an opening window 13 a communicating with the opening window 21 of the mounting frame 4 in the center and formed in a vertically long frame shape is attached to the rear surface side of the mounting frame 4. The projecting pieces 28 are exposed to the back side through the opening window 13a.

  Next, a procedure for attaching the attachment frame 4 to the construction surface will be described. First, as shown in FIG. 9A, a set of two protrusions 26b provided on both side surfaces of the switch 26 are fitted into the mounting holes 22 provided in the both projecting pieces 28, 28 of the mounting frame 4, so that the switch 26 Is attached to the mounting frame 4. When the mounting of the switch 26 is completed, a fixing screw is inserted into the long hole 23 of the mounting frame 4, and the mounting frame 4 is screwed into an embedded box embedded in the construction material via the fixing screw. 4 is fixed to the construction surface. Then, the handle portion 26 a is attached to the front surface of the switch 26 from the front surface side of the mounting frame 4. When the switch 26 is removed from the mounting frame 4, the projection 26b is retracted by pushing the projection 26c provided on the side surface of the switch 26 inward, so that the engagement is released.

  Next, a procedure for attaching the waterproof plate to the attachment frame 4 will be described. First, the cover 2 is brought closer from the back side of the plate 1, and the operation protruding portion 10 of the cover 2 is exposed to the front side through the opening window 5 of the plate 1. The cover 2 is attached to the plate 1 by fitting. At this time, the plate 1 and the cover 2 are in close contact with each other at the seal piece 11 portion of the cover 2 as shown in FIGS. 2 (b) and 3 (b). Further, the packing 3 is attached to the back surface of the plate 1 while the rib 8 of the plate 1 is inserted into the insertion groove 17 of the packing 3 from the back surface side. At this time, the cover 2 and the packing 3 are in close contact with each other at the contact portion between the seal piece 11 of the cover 2 and the protruding piece 19 of the packing 3 as shown in FIGS. 2 (b) and 3 (b). Then, when the fixing screw 9 is inserted into the insertion hole 7 of the plate 1 and the screw insertion hole 15 of the cover 2 and screwed into the screw hole 24 of the mounting frame 4, the waterproof plate is fixed to the mounting frame 4 and the waterproof plate is attached. Is completed. At this time, the handle portion 26a of the switch 26 is disposed in a space formed inside the operation protruding portion 10 of the cover 2, as shown in FIG. Further, the packing 3 is clamped between the outer peripheral end surface on the back side of the plate 1 and the construction surface by tightening the fixing screw 9.

  Here, the contact surface 16 provided on the back surface side of the fitting hole 14 of the cover 2 is sandwiched between the screw boss portion 6 of the plate 1 and the mounting frame 4, and the seal piece 11 of the cover 2 and the packing Since the three projecting pieces 19 are in close contact with each other, it is possible to prevent water from entering from the contact portion between the opening window 5 of the plate 1 and the operation projecting portion 10 of the cover 2. Further, the screw insertion hole 15 of the cover 2 is formed to have a hole diameter smaller than the outer diameter of the threaded portion 9a of the fixing screw 9. When the fixing screw 9 is inserted into the screw insertion hole 15, the contact surface 16 is formed. Since the restoring force that attempts to return the hole diameter of the screw insertion hole 15 to the original works, the screw portion 9a and the contact surface 16 are in close contact with each other, so that water from the screw portion 9a can be prevented. Therefore, even if the conventional screw packing is not used, the threaded portion 9a and the contact surface 16 can be in close contact with each other to prevent water from entering, so that the screw packing can be reduced and the cost can be reduced. You can go down.

  Next, an operation method will be described. When the operation protruding portion 10 of the cover 2 is pushed from the front side, the handle portion 26a of the switch 26 disposed inside is pushed along with the deformation of the operation protruding portion 10, and the switch 26 is operated. At this time, the flexible portion 12 is bent in the vertical direction in FIG. 5B according to the deformation amount of the operation protruding portion 10. Here, the flexible portion 12 is formed in a bellows shape that meanders in the vertical direction in FIG. 5B, and the amount of bending can be increased in the pushing direction of the handle portion 26 a. Can be greatly deformed. Therefore, since the handle portion 26a can be reliably pushed with a small operating force, the switch 26 can be reliably operated and the operability is improved.

  Further, since the cover 2 is formed of a synthetic resin having elasticity, when the hand is released from the operation protrusion 10 of the cover 2, a restoring force according to the amount of deformation works, and the operation protrusion 10 of the cover 2 is It is possible to return to the state before the pressing operation. Further, the mounting pitch of the insertion holes 7 provided in the plate 1 is a dimension standardized by JIS or the like. By providing the opening window 5 adjacent to the insertion hole 7, the opening window 5 can be enlarged. Therefore, since the operation protruding portion 10 of the cover 2 exposed from the opening window 5 can be increased, the pressing operation area of the cover 2 is increased and the operability is improved. Further, since the cover 2 is formed of a transparent synthetic resin having translucency, the handle portion 26a of the switch 26 disposed inside the cover 2 can be viewed from the front side.

  Here, FIG. 6 shows the back surface of the cover 2, and a plurality of ribs 25 (four in the horizontal direction and two in the vertical direction in FIG. 6) are formed on the inner surface of the operation protrusion 10. In this waterproof plate, by providing the rib 25, the contact area of the switch 26 with the handle portion 26a can be reduced, so that the operation protruding portion 10 can be prevented from sticking to the handle portion 26a. Therefore, when the hand is released from the operation protrusion 10 of the cover 2, the operation protrusion 10 of the cover 2 can be reliably returned to the state before the pressing operation, and the operability is improved.

  In the present embodiment, the size of the handle portion 26a to be used is for one module (about one-third the size of the opening window 21 of the mounting frame 4), for two modules (the opening window 21 of the mounting frame 4). (About half the size) For 3 modules (For the same size as the opening window 21 of the mounting frame 4) For one module and 2 modules so that the switch can be operated reliably. Four ribs 25 are provided in the left-right direction at portions facing the operation surface of the handle portion 26a for the three modules. Further, in the vertical direction, ribs 25 are provided at both ends in the width direction that come into contact with each other according to the swinging motion of the handle portion 26a.

  In the present embodiment, a total of six ribs 25 are provided on the inner surface of the operation projecting portion 10 of the cover 2, but the number of ribs 25 is not limited to the present embodiment, and the handle portion to be used. You may change suitably according to 26a. In the present embodiment, the handle portion 26a for three modules has been described as an example. However, the handle portion 26a to be used is not limited to three modules, and the handles for one module and two modules are used. It may be part 26a. Further, the wiring device to be used is not limited to the switch 26, and any wiring device having an operation unit can be used.

(Second Embodiment)
A second embodiment will be described with reference to FIGS. Since the configuration other than that in which the cover 2 and the packing 3 are integrally formed is the same as that of the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIGS. 7, 8 (b) and 9, the waterproof plate of the present embodiment has a cover 2 and a packing 3 integrally molded with synthetic resin (for example, soft vinyl chloride), for example, two-color molding. 2 is transparent and the packing 3 is molded in the same color as the plate 1, and the other configurations are the same as in the first embodiment.

  In this waterproof plate, the cover 2 and the packing 3 are integrally formed, and the number of parts and the number of assembling steps can be reduced as compared with the case where the cover 2 and the packing 3 are provided separately. I can plan. Moreover, by integrally molding, there is no possibility that water or dust may enter from the joint between the cover 2 and the packing 3, and the waterproofness and dustproofness are improved. Furthermore, since it is integrally molded, there is no need for a space for sandwiching the cover 2 between the plate 1 and the pressing plate or for heat-sealing the plate 1 and the pressing plate as in the prior art. Thus, the width of the bellows shape of the flexible portion 12 provided on the cover 2 can be increased.

It is a disassembled perspective view of the waterproof plate of 1st Embodiment. (A) is a front view same as the above. (B) is AA sectional drawing same as the above. (A) is BB sectional drawing same as the above. (B) is C section sectional drawing same as the above. (A) is a front view of a cover same as the above. (B) is a side view of a cover same as the above. (C) is a bottom view of the same cover. (A) is BB sectional drawing of a cover same as the above. (B) is D section sectional drawing of a cover same as the above. (C) is E section sectional drawing of a cover same as the above. It is a rear view of a cover same as the above. It is a disassembled perspective view of the waterproof plate of 2nd Embodiment. (A) is a front view of the state which attached the switch to the same as the above. (B) is AA sectional drawing of the state which attached the switch to the same. (A) is BB sectional drawing of the state which attached the switch to the same. (B) is F section sectional drawing. (A) is a disassembled perspective view of the waterproof plate of a prior art example. (B) is sectional drawing of the state which attached the switch to the waterproof plate of a prior art example.

Explanation of symbols

1 Plate 2 Cover 3 Packing 5 Opening window (opening)
10 Operation protrusion (protrusion)
11 Seal piece (seal part)
12 Flexible part 26 Switch (wiring device)
26a Handle part (operation part)

Claims (3)

A plate disposed on the front side of the wiring device, having an opening for exposing the operation unit of the wiring device embedded in the construction material to the front side;
A cover that is formed of an elastic material, has a protrusion that protrudes to the front side through the opening at a portion corresponding to the opening, and is attached to the back surface of the plate to close the opening;
A packing formed of an elastic material and sandwiched between the back surface and the construction surface of the plate,
A seal portion that is in close contact with the plate is formed on the outer peripheral edge of the cover over the entire circumference, and is flexible in a direction in which the operation portion is pushed between the protruding portion and the seal portion in the cover. A flexible portion having an accordion shape is formed over the entire circumference, and at least one rib projecting toward the operation portion is provided at a portion facing the operation portion on the inner surface of the projection. And waterproof plate. The waterproof plate according to claim 1, wherein the cover and the packing are integrally formed . The opening is formed adjacent to a screw boss portion having an insertion hole through which a fixing screw for fixing the plate to the mounting frame for an embedded wiring device is inserted.
In the cover, a fitting concave portion for fitting the screw boss portion is provided at a portion corresponding to the screw boss portion, and a bottom surface of the screw boss portion is extended inward by an end portion on the back surface side of the fitting concave portion. 3. The method according to claim 1 , wherein an abutting portion that abuts with the fixing screw is formed, and an opening hole that is smaller than an outer diameter of a screw portion of the fixing screw is provided in the abutting portion. Waterproof plate as described .

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