JP2000209748A - Rainproof cover for incoming line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-assemble rainproof cover for an incoming line. SOLUTION: A casing consists of a cover 1 and a waterproof packing 5. A partition plate 16, having an opening window 13 at the bottom part side of a bulging out part 12, is formed continuously and solidly on the cover 1. Having a line-passing part 31 at its central part, a bushing 3 is fixed to the cover 1 by a holder 4, which grips the mounting base of the bushing 3 between the bushing 3 and the circumferential part of the opening window 13 of the partition plate 16. The press plate 4 is freely detachable at the proximity of the opening window 13 of the partition plate 16 on the cover 1, and is formed into a rectangular plate shape having an oval opening window 43 which corresponds to the line-passing part 31 of the bushing 3 at its central part. A strip-shaped pressing piece 45 is projected continuously and solidly from the back end edge of the pressing plate 4. From the pressing piece 45, a locking claw 45a is protrusively provided which is locked to the locking groove of a fixing piece 14, provided protrusively on the back surface side of the cover 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rainproof cover for use with a bushing through which an electric wire runs between the outside and the inside, which is attached to an outdoor construction surface.

[0002]

2. Description of the Related Art Heretofore, as an outlet which is attached to and used on an outdoor construction surface, it has been arranged so as to cover an electric wire insertion opening formed in the construction surface and bulged away from the construction surface. A so-called waterproof outlet in which the outlet main body is housed in a waterproof case having a bulging portion has been proposed (for example, Japanese Patent Publication No. 1-52966). There has also been proposed a rainproof entry cover provided with a bushing for passing electric wires to and from an indoor location.

[0003] This type of rain-proof cover is, for example, shown in FIG.
As shown in FIG. 11 and FIG. 11, a cover having a bulging portion 12 arranged so as to surround the electric wire insertion opening formed in the construction surface and bulging away from the construction surface (to the left in FIG. 11). 1 'and a bushing 3' attached to the cover 1 '.

[0004] Here, the cover 1 'has a bulge 1
Oval opening window 13 (see FIG. 11) provided on the lower side of 2 to partition the inside and outside of the bulging portion 12 and to attach the bushing 3 ′ (that is, to insert an electric wire extending between outdoor and indoor). A partition plate 16 having an opening is formed continuously and integrally. On the other hand, the bushing 3 ′ is formed of a material having insulation and elasticity, has a wire portion 31 through which the electric wire is passed, and has a flange portion 37 surrounding the wire portion 31 over the entire circumference. . The bushing 3 ′ is moved from below the bulging portion 12 in FIG. 11 in the direction of arrow C in FIG. To
Mounting groove 3 formed over the entire outer peripheral surface of flange 37
8 is fitted to the partition plate 16 of the cover 1 '. Therefore, the outer diameter of the opening window 13 is set so that the bushing 3 ′ does not come off when the electric wire is inserted.
It is formed smaller than the outer diameter of the flange 37 of the bushing 3 '.

[0005]

By the way, in the above-mentioned conventional rainproof cover, the bushing 3 'is fixed to the cover 1' by the bushing 3 '.
6 and is fixed by fitting the mounting groove 38 of the bushing 3 ′ into the periphery of the opening 13 of the partition plate 16. For example, the bushing 3 ′ is inserted at the time of insertion (wire insertion) at the time of construction. However, there has been a problem that the bushing 3 'is easily detached from the cover 1' when it is pulled in the direction of arrow A or arrow B in FIG. In order to prevent the bushing 3 'from coming off easily, it is necessary to make the opening window 13 smaller than the outer diameter of the bushing 3' as much as possible. There was a problem.

[0006] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rain-proof wire cover that is easy to assemble.

[0007]

According to a first aspect of the present invention, there is provided an electric power tool, comprising: a cover provided on a construction surface to cover an electric wire insertion opening; A case having a projected bulging portion and a partition plate provided at a lower side of the bulging portion and partitioning the inside and outside of the bulging portion and having an opening window through which an electric wire is inserted; A bushing having a frame-shaped mounting base surrounding the through-line portion and covering the through-line portion, the bushing being covered by the opening window, and being detachably mounted near the opening window of the case and being provided in the case through the opening of the partition plate of the case. A presser plate for holding a mounting base of the bushing between the window peripheral portion and the bushing, and mounting the bushing between the presser plate and the peripheral portion of the opening window of the case partition plate. Attaching the holding plate to the case as it holds the base Therefore since it is possible to fix the bushing, it is possible to easily fix the bushing to the case during assembly, thereby improving the assembling workability.

According to a second aspect of the present invention, in the first aspect of the present invention, the bushing is covered by the opening window from the inside of the bulging portion partitioned by the partition plate. Is provided with a retaining rib protruding from the top end of the holding plate located at the top surface of the mounting base and coming into contact with the top surface of the holding plate. The bushing can be prevented from coming off when the bushing is pulled to the lower surface side of the mounting base, for example, during a wire connection operation.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the bushing is covered by the opening window from the inside of the bulging portion partitioned by the partition plate. On the inner surface of the bulging portion, there is provided a holding plate fixing rib which comes into contact with the upper surface side of the holding plate and restricts the movement of the holding plate to the upper surface side. Even if the bushing is pulled to the upper surface side of the mounting base at the time of wire insertion work, the movement of the presser plate is regulated by the presser plate fixing rib, so that the bushing can be prevented from coming off.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the case has a box shape having an opening on the construction surface side, has the above-mentioned bulging portion, and is provided at a lower side of the bulging portion. A cover having a partition plate formed with an opening window for entering and receiving an electric wire while partitioning the inside and outside of the part, and a waterproof packing held between the cover and the construction surface, so that the case and the construction surface The waterproofness between them can be increased.

According to a fifth aspect of the present invention, in the first aspect of the present invention, a mounting frame is provided to be attached to the opening of the construction surface, and the case has a mounting portion for mounting to the mounting frame. The case can be attached to the attachment frame attached to the construction surface by the same construction method as attaching the plate to the attachment frame for the embedded wiring device.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION
It can be attached to a construction surface such as an outdoor wall,
As shown in FIGS. 1 to 8, a mounting frame 6 attached to a construction surface having an opening through which electric wires pass is formed, and a bulging portion 12 bulging away from the construction surface. The mounting frame 6 is attached by mounting screws 9 so as to surround the mounting frame 6 and the opening.
And a waterproof packing 5 held between the cover 1 and the construction surface.

The cover 1 is provided below the bulging portion 12 to partition the inside and outside of the bulging portion 12 and to attach the bushing 3 (that is, to insert an electric wire extending between the outside and the inside of the room). A partition plate 16 having an oblong opening window 13 is formed continuously and integrally. In addition,
In the present embodiment, a case is provided in which the cover 1 and the waterproof packing 5 are disposed so as to cover the opening.

As shown in FIGS. 3 and 7, the mounting frame 6 is formed by continuously and integrally connecting the upper end portions and the lower end portions of a pair of frame pieces 61 with the horizontal pieces 62, respectively. It is formed in a vertically long rectangular frame shape having a rectangular opening window 63 for inserting an electric wire passing through the central portion. In addition, the opening window 63 is formed at an appropriate position of the mounting frame 6 corresponding to the bulging portion 12 of the cover 1.

In the middle of each of the horizontal pieces 62 of the mounting frame 6, the mounting frame 6 is embedded on a construction surface (110 in FIG. 9 is a construction material) as shown in FIG. A box hole 64 through which a box screw 80 to be attached to the box 90 is inserted, and a scissor fitting locking hole 65 for locking a scissor fitting used when attaching to a wall panel or the like forming a construction surface.
And a cover screw hole 66 in which a nut 66a into which the mounting screw 9 for mounting the cover 1 is screwed is provided. The mounting frame 6 is formed of a synthetic resin (for example, ABS resin).

The cover 1 is formed of a synthetic resin in the shape of a box whose rear surface (the mounting surface side to the construction surface) is open, and has a base portion 11 formed in a rectangular frame shape and a base portion 1.
The swelling portion 12 is formed integrally and continuously from the upper portion of the swelling member 1 and swells away from the construction surface. The swelling portion 12 is formed integrally and continuously. The partition plate 16 is formed continuously and integrally.

Here, an insertion hole 19 (see FIG. 9) through which the mounting screw 9 is inserted is formed substantially at the center of the upper end of the cover 1 and substantially at the center of the lower end. Here, the mounting screw 9 inserted into each insertion hole 19 is a cylindrical boss 17 protruding from the inner surface of the cover 1 toward the rear of the cover 1.
And screwed into a nut 66a provided in the cover screw hole 66 of the mounting frame 6. Therefore, in this embodiment, it becomes possible to attach the cover 1 to the attachment frame 6 attached to the construction surface by the same construction method as attaching the plate to the attachment frame for the embedded wiring device. The mounting screw 9 has a packing 8 interposed between the head of the mounting screw 9 and the cover 1.

The cover 1 is provided with the waterproof packing 5 described above.
The fitting rib 11a is provided circumferentially from the rear end face of the base portion 11 rearward so that the base portion 11 can be attached. On the other hand, as shown in FIG. 3, the waterproof packing 5 has a box shape having a rear opening and a rectangular opening window 53 for passing electric wires through the front surface.
A fitting groove 51 (see FIG. 1) is formed in the outer peripheral edge of the front surface.
It is fixed to the cover 1 by fitting 1a. Here, the waterproof packing 5 is configured such that the rear end surface of the peripheral wall is in close contact with the construction surface (see FIG. 9). Further, in the front surface of the waterproof packing 5, an insertion hole 56 having an inner diameter substantially matching the outer diameter of each of the bosses 17 protruding from the inner surface of the cover 1 and through which the boss 17 is inserted is formed. In addition, each boss 1
The front end surface (rear end surface) of the abutment 7 comes into contact with a peripheral portion of a cover screw hole 66 protruding forward (in a direction away from the construction surface) from other portions of the mounting frame 6.

Further, the waterproof packing 5 is provided with the opening window 5.
3, a rectangular tubular portion 53a protruding rearward from the periphery of the opening.
Having. A cutout 58 is provided at the lower part of the waterproof packing 5 at a position corresponding to the protruding piece 68 projecting downward from the lower part of the mounting frame 6.

The bushing 3 is attached to the cover 1 before the waterproof packing 5 is attached. The bushing 3 is formed of a material having an insulating property and elasticity (for example, rubber, soft vinyl chloride, or the like). As shown in FIG. And a mounting base 32 formed in a rectangular frame shape surrounding the communication line portion 31.
1a are formed on the left and right along the longitudinal direction of the wire section 31. In addition, both cut grooves 31 are provided on the upper surface side of the wire section 31.
A partition wall 33 is provided between a.

Here, the bushing 3 is provided with the partition plate 1.
6 is fixed to the cover 1 by the presser plate 4 which holds the mounting base 32 of the bushing 3 between the opening window 13 and the periphery. In short, the bushing 3 is covered by the opening window 13 from the inside of the bulging portion 12 partitioned by the partition plate 16.

The holding plate 4 is detachable near the opening window 13 of the partition plate 16 of the cover 1 and has a bushing 3 at the center.
An oval opening window 43 corresponding to the wire section 31 is formed in a rectangular plate shape with an opening. The holding plate 4 has guide pieces 44 projecting from both sides of the holding plate 4. When the holding plate 4 is inserted into the cover 1 from top to bottom in FIG. Of the cover 1 is substantially in contact with a holding plate fixing rib 15b protruding from the inner surface of the cover 1. Further, a band-shaped pressing piece 45 is continuously and integrally protruded from a rear end edge (upper edge in FIG. 3) of the pressing plate 4, and is protruded from the pressing piece 45 to a rear surface side of the cover 1. A locking claw 45a that is locked in the locking groove 14a of the fixed piece 14 protrudes. From both sides of the holding plate 4, connecting legs 46 having locking claws 46 a which are locked in locking holes 16 a (see FIG. 8) formed in the partition plate 16 of the cover 1 at the tip end are protruded. Have been.

On the other hand, the bushing 3 has projecting strips 39 in the form of strips opposed to each other on the upper surface side of both sides of the mounting base 32, and on the upper surface side of the front end of the mounting base 32, A retaining rib 34 (see FIG. 2) is provided in which the leading end wraps around the upper surface of the holding plate 4 located on the upper surface of the mounting base 32 and comes into contact with the upper surface of the holding plate 4.
Here, the retaining rib 34 is located between the inner surface of the bulging portion 12, the periphery of the opening window 13 of the partition plate 16, and the retaining plate fixing rib 15a. A notch 47 (see FIG. 3) is formed in the holding plate 4 at a position corresponding to the retaining rib 34 of the bushing 3.

However, in the rainproof cover of the present embodiment, the front end of the cover is attached to the mounting base 32 of the bushing 3 so as to extend toward the upper surface of the pressing plate 4 located on the upper surface of the mounting base 32. The bushing 3 is attached to the mounting base 3 when a wire is inserted into the wire section 31 of the bushing 3 because the retaining rib 34 is in contact with the upper surface of the bushing.
When the bushing 3 is pulled toward the lower surface side (the direction of the arrow A in FIG. 1), the bushing 3 can be prevented from coming off. Further, since the above-mentioned holding plate fixing ribs 15a, 15a, 15b are protrudingly provided on the inner surface of the cover 1, the bushing 3 is attached to the mounting base 32 when the wire is inserted into the wire portion 31 of the bushing 3. The movement of the holding plate 4 is restricted by the holding plate fixing ribs 15a, 15a, 15b even if the bushing 3 is pulled toward the upper surface side (the direction of the arrow B in FIG. 1), so that the bushing 3 can be prevented from coming off. .

In the rainproof cover of the present embodiment, the mounting base 32 of the bushing 3 is sandwiched between the holding plate 4 and the peripheral portion of the opening window 13 of the partition plate 16 of the cover 1.
Since the bushing 3 can be fixed by attaching the holding plate 4 to the cover 1, the bushing 3 can be easily fixed to the cover 1 during assembly.
The assembly workability can be improved. Further, in the present embodiment, by attaching the waterproof packing 5 to the cover 1, the front surface of the waterproof packing 5 elastically contacts the pressing piece 45 of the pressing plate 4, so that the pressing plate 4 is prevented from coming off the cover 1. it can.

FIG. 9 shows an opening 111 through which the electric wire 100 is inserted.
The mounting frame 6 is attached using a box screw 80 to the embedding box 90 embedded in the construction material 110 having the opening, and the case including the cover 1 and the waterproof packing 5 is attached to the mounting frame 6. Is shown. In short, Figure 9
When the electric wire 100 shown in FIG.
11, an opening window 63 of the mounting frame 6, an opening window 53 of the waterproof packing 5, an opening window 43 of the holding plate 4, a wire portion 3 of the bushing 3.
You will pass one. In addition, the wire section 31 of the bushing 3
Is formed with the cut 31a, so that the electric wire 100
It is designed to elastically deform when inserted.

As shown in FIGS. 4 and 6, the cover 1 has a recess 14 formed in the lower front surface.
The cord holder 2 is attached to the vicinity of 4 by a fixing screw 7. Here, as shown in FIGS. 3 and 5, the fixing screw 7 is screwed to a nut 10 provided inside a cylindrical boss 18 protruding from the rear surface of the cover 1. The cord holder 2 is provided with a cord pressing piece 23 for holding a cord or the like between the bottom of the recess 14 and the cord. Therefore, the electric wire 1 is located between the cord holding piece 23 and the bottom of the recess 14.
If 00 is held, the force acting in the in-plane direction of the wire portion 31 of the bushing 3 when the electric wire 100 is pulled can be reduced.

It should be noted that the wire section 31 of the bushing 3 in the rainproof entry line cover of the present embodiment can pass four coaxial cables.

[0029]

According to the first aspect of the present invention, there is provided a bulging portion which is provided so as to cover an electric wire insertion opening formed in a construction surface and which bulges away from the construction surface. A case provided with a partition plate provided on the lower side of the portion and formed with an opening window for partitioning the inside and outside of the swelling portion and inserting an electric wire,
A bushing that has a through portion through which an electric wire is passed and has a frame-shaped mounting base surrounding the through portion, and a bushing that is covered by the opening window; A holding plate for holding a bushing mounting base between the plate and the opening window peripheral portion is provided, so that the bushing mounting base is held between the holding plate and the opening window peripheral portion of the case partition plate. Therefore, the bushing can be fixed by attaching the holding plate to the case, and the bushing can be easily fixed to the case at the time of assembling, thereby improving the assembling workability.

According to a second aspect of the present invention, in the first aspect of the present invention, the bushing is covered by the opening window from the inside of the bulging portion partitioned by the partition plate. Is provided with a retaining rib protruding from the top end of the holding plate located at the top surface of the mounting base and coming into contact with the top surface of the holding plate. When the bushing is pulled to the lower surface side of the mounting base at the time of a wire connection operation, the bushing can be prevented from coming off.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the bushing is covered by the opening window from the inside of the bulging portion partitioned by the partition plate. On the inner surface of the bulging portion, there is provided a holding plate fixing rib which comes into contact with the upper surface side of the holding plate and restricts the movement of the holding plate to the upper surface side. Even when the bushing is pulled to the upper surface side of the mounting base at the time of a wire insertion operation, the movement of the presser plate is restricted by the presser plate fixing rib, so that the bushing can be prevented from coming off.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the case has a box-like shape having an opening on the construction surface side, has the above-mentioned bulging portion, and is provided below the bulging portion. A cover having a partition plate formed with an opening window for entering and receiving an electric wire while partitioning the inside and outside of the part, and a waterproof packing held between the cover and the construction surface, so that the case and the construction surface There is an effect that the waterproof property between them can be enhanced.

According to a fifth aspect of the present invention, in the first aspect of the present invention, a mounting frame is provided to be attached to the opening of the construction surface, and the case has a mounting portion for mounting to the mounting frame. In addition, there is an effect that the case can be attached to the attachment frame attached to the construction surface by the same construction method as attaching the plate to the attachment frame for the embedded wiring device.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment.

FIG. 2 is an enlarged view of the essential part D of FIG.

FIG. 3 is an exploded perspective view of the same.

FIG. 4 is a front view of the same.

FIG. 5 is a sectional view taken along the line E-E 'of FIG. 4, showing the above.

FIG. 6 is a bottom view of the above.

FIG. 7 is a rear view of the same.

FIG. 8 is a side sectional view showing a state in which a holding plate is attached to the cover.

FIG. 9 is an explanatory diagram of a construction state of the above.

10A and 10B show a conventional example, in which FIG. 10A is a front view, and FIG. 10B is a bottom view.

FIG. 11 is a side view of the same.

[Explanation of symbols]

 Reference Signs List 1 cover 3 bushing 4 holding plate 5 waterproof packing 12 bulging portion 13 opening window 14 fixing piece 16 partitioning plate 31 wire section 32 mounting base 43 opening window 45 holding piece 45a locking claw

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masaaki Nakamura 2856 Shiratsuka-cho, Tsu-shi, Mie Asahi Denki Kogyo Co., Ltd. F-term (reference) 5G363 AA01 AA16 BA01 CB08

Claims (5)

[Claims] 1. A swelling portion which is provided so as to cover an opening for inserting an electric wire which is opened in a construction surface, and which is swelled away from the construction surface, and which is provided below the swelling portion. A case having a partition plate formed with an opening window for inserting the electric wires while partitioning the inside and the outside of the bulging portion, and a frame-shaped mounting base having a through portion through which the electric wires are passed and surrounding the through portion. A bushing covered by the opening window, and a holding plate detachably mounted near the opening window of the case and holding the mounting base of the bushing between the opening window peripheral portion of the partition plate of the case. A rainproof entry line cover. 2. The bushing is covered by the opening window from the inside of the bulging portion partitioned by a partition plate, and a mounting base of the bushing has a tip end on an upper surface side of the mounting base. 2. The rainproof cover according to claim 1, wherein a retaining rib is provided so as to protrude around the upper surface of the presser plate to come into contact with the upper surface of the presser plate. 3. The bushing is covered by the opening window from the inside of the bulging portion partitioned by the partition plate, and the inner surface of the bulging portion of the case contacts the upper surface of the holding plate. The rainproof cover according to claim 1 or 2, wherein a rib for fixing the holding plate, which protrudes and contacts the upper surface of the holding plate, is provided in contact therewith. 4. The case has a box-like shape with an opening on the construction surface side, has the swelling portion, and is provided below the swelling portion to partition the inside and outside of the swelling portion and to insert an electric wire. 2. The rainproof cover according to claim 1, comprising a cover having a partition plate having an opening window, and a waterproof packing held between the cover and the construction surface. 5. The rainproof cable according to claim 1, further comprising a mounting frame attached to the opening of the construction surface, wherein the case has a mounting portion for mounting to the mounting frame. cover.