JPH09182255A - Waterproof apparatus for electric wiring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof apparatus for electric wirings wherein the electric wiring work applied to an electric wiring object can be performed in a predetermined state and its through hole for wirings can be sealed very easily without requiring much labor even in the course of the solidification of a sealant and its waterproof quality can be held firmly even after the completion of its sealing work. SOLUTION: This apparatus comprises a through hole 12 bored in a panel 11; a flange 12a formed on the rear surface side of the periphery of the through hole 12; and a cover vessel 14 for covering the though hole 12 and flange 12a from the rear surface side of the through hole 12 in the state that a cable 13 is passed through the through hole 12, and capable of being fastened to the panel 11 in the state that at least the whole periphery of its opening end overlaps with the flange 12a, and capable of being filled with a predetermined quantity of a liquid sealant to the depth wherein the end opening portion of the flange 12a is dipped into the liquid sealant. Using this apparatus, the through hole 12 and cable 13 can be sealed in a bonding way by filling the sealant into the cover vessel 14 via the through hole 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof device for electric wiring, and more particularly, to a part of a casing or panel of an electric wiring target object installed in a place where waterproofness is required. The present invention relates to a possible waterproof device for electric wiring.

[0002]

2. Description of the Related Art Conventionally, there are various kinds of electromechanical devices installed in a place having a lot of water or dust, and generally, water and dust are considered to cause various troubles to the electromechanical devices. There is. In particular, various waterproof measures have been taken for electromechanical devices.For example, water heaters and lighting equipment used in bathrooms have a structure that allows the electromechanical device body to be installed outside the bathroom as much as possible. However, since the operation panel and switches for operating the main body are required to be operated from the bathroom for convenience, they are usually installed in the bathroom,
It is rarely installed outside the bathroom. Particularly in recent bathrooms, devices requiring electrical control such as 24-hour baths and bubble baths are increasing, and many of these electromechanical devices can be operated from inside the bathroom.

Not only in the bathroom, there are many electromechanical devices required to have such waterproofness, and those operation panels and switches have recently been waterproofed by coating the surface with a resin. Many. Even when the casing or panel is installed, waterproofing measures are taken such as by sandwiching packing between the casing and the panel, and they exhibit extremely effective waterproofing performance.

[0004]

However, the waterproof casing of the electromechanical device installed in the above-mentioned water-rich place, the operation panel, and the switches are
Although the waterproofness of the panel surface and the electromechanical device itself is effective, there is no definitive waterproofing measure for the cable that is the electrical wiring connecting the switch and the electromechanical device.

FIG. 9 is a perspective view showing a state in which electric wiring is waterproofed by a conventional adhesive. For example, in the conventional case, a through hole 1 formed in a panel 3 as shown in FIG. 9 is used.
After passing the cable 2 through the
The through-hole 1 was sealed by closing and fixing. According to this method, the through hole 1 is sealed by the cable 2
While fixing the adhesive in a predetermined state, the adhesive 4 is applied to a thickness substantially the same as that of the panel 3 until the adhesive 4 is solidified.
It was a very troublesome and time-consuming task of fixing. Moreover, if the cable 2 is moved even slightly before the adhesive 4 is completely solidified, a gap is created between the adhesive 4 and the cable 2, or the cable 2 is moved even after the adhesive 4 is solidified. As a result, the adhesive 4 is easily peeled off.

Therefore, according to the present invention, the electric wiring to the electric wiring target can be operated in a predetermined state, and the work can be performed easily during the solidification of the sealant, and the through hole for wiring can be sealed very easily. It is an object of the present invention to provide a waterproof device for electric wiring, which can maintain the waterproof property even after completion of the sealing work.

[0007]

According to a first aspect of the invention, there is provided a waterproof device for electric wiring, wherein a through hole is formed in an electric wiring object, and a flange is formed on the back surface side around the through hole. In the state where the cable is passed through the through hole, the through hole and the flange are covered from the back surface side of the through hole, and at least the entire circumference of the opening end can be locked in a state of overlapping with the flange, and a predetermined amount. And a lid container that can be filled with the liquid sealing agent until the front end opening of the flange is immersed. Here, the lid container may be made of any material as long as it can be covered with the through hole and locked, and the sealing agent may be a potting agent or a simple adhesive agent.

Therefore, according to the waterproof device for electric wiring of the first aspect of the invention, the lid container is opened from the rear surface side of the through hole in a state in which the cable is penetrated through the through hole formed in the electric wiring object. By locking and filling the lid container with a predetermined amount of liquid sealing agent, the through hole can be sealed.

According to a second aspect of the present invention, there is provided a waterproof device for electric wiring, wherein the lid container according to the first aspect has a cable pressing portion capable of pressing the cable to a predetermined position of the electric wiring target object. The cable can be clamped by the wiring object. Here, the electric wiring object may be provided with a recess for holding the cable at a position corresponding to the cable pressing portion of the lid container.

Therefore, according to the waterproof device for electric wiring of the second aspect of the invention, the through hole can be sealed and the cable can be sealed while the cable is held between the cable pressing portion of the lid container and the electric wiring target object. The cable can be fixed to the through hole with a sealant while sandwiching the pin.

According to a third aspect of the present invention, there is provided a waterproof device for electric wiring, wherein the lid container according to the first or second aspect has a claw portion which can be engaged with a part of the through hole, and is used as an electric wiring object. It is removable. Here, the claw portion may be formed on the hook member by providing the hook member on the lid container.

Therefore, according to the waterproof device for electric wiring of the third aspect of the invention, the lid container can be detachably locked in the through hole by the claw portion, so that the lid container can be easily assembled without using a special tool. In addition, the wiring can be redone before the sealing agent is filled.

[0013]

Embodiments of the present invention will be described below. 1 is an exploded perspective view showing a waterproof device for electric wiring according to a first embodiment of the present invention, and FIG. 2 is an exploded side view showing a waterproof device for electric wiring according to a first embodiment of the present invention.

As shown in FIGS. 1 and 2, a waterproof device 10 for electric wiring of this embodiment has a through hole 12 for wiring formed in a panel 11 which is an electric wiring object, and the through hole 12. And a lid container 14 that can be fixed by covering the cable 13 in a penetrating state, and filling the lid container 14 from the through hole 12 with a potting agent 15 mainly composed of a synthetic resin that solidifies at a predetermined temperature. Thus, the through hole 12 and the cable 13 are hermetically sealed to exert a waterproof function.

The panel 11 is a plate member made of plastic or the like, which is applied from the rear surface of a casing provided with switches and the like and is fixedly adhered thereto.
A method in which a resin having elasticity called packing is sandwiched and fixed with a screw or the like, or an adhesive is applied and fixed in a portion where 1 and a casing which is adhesively fixed to the surface of the panel 11 are in contact with each other. Is generally practiced. Recently, a method of electrically treating the contact surface between the casing and the panel 11 and adhering it may be adopted.

The panel 11 has a length of about 1 cm to 2 cm,
A rectangular through hole 12 having a width of about 2 cm to 5 cm is formed,
Along the outer periphery of the opening of the through hole 12, a flange 12a having a length of about 1 cm to 2 cm projects toward the back surface of the panel 11. A recess 12b is formed in the flange 12a, and the cable 13 passes through the recess 12b. Further, on the back surface 1 cm to 2 cm above the through hole 12, the length is about 1 cm to 2 cm and the width is 2 cm to 5 cm.
A recess 16 having a depth of about 1 mm to 3 mm is formed on the order of cm.

The cable 13 is a lead wire or the like for electrical wiring, and is connected to switches provided in a casing or the like that is adhesively fixed to the back surface of the panel 11, and is connected to the switches and their extended ends. The electrical connection is made with various electromechanical devices to be connected. The cable 13 in this embodiment is the cable 1 extending from the switches.
The end of 3 is wired through the through hole 12 from the surface of the panel 11 to the back surface.

The lid container 14 has a potting agent receiving portion 14a having a size capable of enclosing the flange 12a provided on the back surface of the through hole 12 with an interval of about 1 mm to 2 mm, and is inclined upward. And a container portion formed by a cable pressing portion 14c that is extended and protrudes like a bow of a ship,
The potting agent receiving portion 14a is constituted by hooking members 14b provided upright on the left and right ends. Hook member 14b
A claw portion 14d is formed at the tip of the claw portion 14d.
d is engaged with a step portion 12c formed in the through hole 12. Then, as shown by the alternate long and short dash line in FIG. 1, in a state where the cable 13 is passed through the through hole 12, the cable 1 is pressed by the cable pressing portion 14c from the rear surface of the panel 11.
3 is pressed into the concave portion 12b of the panel 11, and the flange 12a is wrapped therein so that it is fitted into the through hole 12 and locked. At this time, the entire circumference of the opening end of the container portion of the lid container 14 is the flange 12a around the through hole 12.
Lock in the state of overlapping with.

The potting agent 15 is mainly composed of a synthetic resin such as urethane resin which solidifies at a predetermined temperature, and the cable 13 and the lid container 14 are arranged on the panel 11 in a liquid state heated to a high temperature. In the state, the through hole 1
It is poured into the lid container 14 from 2 until at least the tip opening portion of the flange 12a is immersed. Then, by solidifying the liquid potting agent 15, the through hole 12 and the cable 13 are integrated, and the through hole 12 is in a sealed state.

Next, a detailed structure of the periphery of the through hole 12 and the lid container 14 of the waterproof device for electric wiring of this embodiment will be described. FIG. 3 is a vertical cross-sectional view showing a through hole and a cable recess formed in an electric wiring object of a waterproof device for electric wiring according to the first embodiment of the present invention. FIG. 4 is a first embodiment of the present invention. A plan view showing a lid container of a waterproof device for electric wiring,
FIG. 5 is a sectional view showing an X-X section of the lid container of FIG.

As shown in FIG. 3, a flange 12a projecting toward the back surface of the panel 11 around the through hole 12 formed in the panel 11 has a hook member 14b of the lid container 14.
And has a role of a guide when inserting the hook member 14b. In addition, the recessed portion 16 formed about 1 cm to 2 cm above the through hole 12 on the back surface of the panel 11,
A cable 13 can be passed through, and a lid container 14 is attached to the panel 1.
The cable pressing portion 14 of the lid container 14 in the state of being locked at 1.
The cable 13 can be clamped by c. Further, above the inner sides of the left and right sides of the flange 12a, the claw portion 1 formed at the tip portion of the hooking member 14b of the lid container 14.
A step portion 12c capable of hooking 4d is formed. All of them are made of plastic, that is, the same material as that of the panel 11, and are integrally molded with the panel 11.

As shown in FIGS. 4 and 5, the lid container 14
Is a plastic container having a lid function, and has a substantially convex shape when viewed from the top surface, and has a long trapezoid shape in which the upper side is wider than the lower side when viewed from the side. The inside of the lid container 14 has a container shape as a potting agent receiving portion 14a, and the flange 1 on the rear surface of the through hole 12 is formed.
2a can be entirely inserted into this container-shaped portion. Further, on the left and right ends of the potting agent receiving portion 14a, a hook member 14b in a state in which a plastic plate material is erected.
Is provided, and a claw portion 14d that can be engaged with the step portion 12c inside the flange 12a is provided at the tip end portion of the hook member 14b. And, actually, the lid container 1
When the hook member 14b of No. 4 is fitted into the through hole 12, the elastic force of the hook member 14b and the step portion 12c and the claw portion 14 are used.
The lid container 14 can be fixed at a predetermined position with respect to the through hole 12 by hooking with d.

A liquid potting agent is put into the potting agent receiving portion 14a of the lid container 14 while the lid container 14 is locked to the panel 11 by passing the cable 13 through the through hole 12.
The completed state of the waterproof device for electric wiring of the present embodiment will be further described. FIG. 6 is a cross-sectional view showing a state immediately after a potting agent is injected into the electric wiring waterproof device according to the first embodiment of the present invention, and FIG. 7 shows an electric wiring waterproof device according to the first embodiment of the present invention. It is a perspective view from the upper surface side which shows an external appearance.

As shown in FIG. 6, the cable 13 routed through the through hole 12 is pressed and locked by the lid container 14 fitted from the rear surface of the panel 11. That is, the cable 13 passed through the through hole 12 is pressed downward by the concave portion 12b of the flange 12a, and is pressed upward by the cable pressing portion 14c at the tip end portion of the lid container 14, so that the cable pressing portion 14c and the recess are formed. Part 1
It is sandwiched by 6 and fixed. In such a state, the potting agent 15 which has been heated to a predetermined temperature and turned into a liquid is poured from the through hole 12.

By leaving the potting agent 15 until it solidifies, the cable 13 is integrated with the through hole 12 and is in a hermetically sealed state. In this state, the cable 13 has come out of the potting agent 15 that has solidified as shown in FIG. 7, and the cable 13 is pressed against the panel 11 by the locking tool 17 or the like to be fixed to the electrical wiring. Is completed. FIG. 7 shows a state in which the six cables 13 have been processed. Inside potting, cable 13
Is fixed in a substantially S-shape as shown in FIG.

Therefore, in the work of sealing the electric wiring waterproofing device 10 of the present embodiment with respect to the through hole 12, a special tool is used for assembling the through hole 12 and the lid container 14 by the hook member 14b. You can do it very easily with one touch. Moreover, the recess 12 of the flange 12a
b and the lid container 14, and the cable pressing portion 14c and the panel 1
Since the cable 13 can be clamped by the recessed portion 16 of 1, the cable 13 is locked in a predetermined form,
The potting agent 15 can be filled. For this reason, the waterproofing work can be performed extremely easily in a short time, and since it is sufficient to leave the potting agent 15 even during the coagulation of the potting agent 15, no trouble is required. Further, since it has an extremely simple structure, it is suitable for mass production and can be provided at a relatively low cost, and any person can perform the sealing work very easily. Further, since the waterproofed cable 13 is fixed in a state of being locked by the electric wiring waterproofing device 10, the cable 13 does not move largely even after completion of the sealing work, and the potting agent 1
There is almost no gap between them and the potting agent 15, and the potting agent 15 does not peel off, so that the waterproofness can be maintained extremely strongly.

The recessed portion 1 of the panel 11 described above is used.
6 is not necessarily provided, but is preferably provided in order to protect the cable 13 from pressure applied to the cable 13 and the like. In addition, the cable pressing portion 14 of the lid container 14
If a c-shaped depression is used, the cable 13 can be protected even if the depression 16 of the panel 11 is omitted. Further, the shape of the lid container 14 is not limited to the shape described above, and may be a quadrangle.

Although the potting agent 15 is used as the sealing agent here, any other liquid may be used as long as it solidifies after a lapse of a predetermined time at room temperature, such as an adhesive.

The size of each member is not limited to the above description, and may be appropriately changed depending on the device or the number or thickness of the cables 13 to be wired.

Next, a second embodiment of the present invention will be described. FIG. 8 is an exploded perspective view showing the structure of the electric wiring waterproofing device according to the second embodiment of the present invention. In the figure, the same reference numerals and symbols as those in the first embodiment denote the same or corresponding parts as in the first embodiment.

As shown in FIG. 8, the waterproof device for electric wiring 10 of this embodiment is substantially the same as that of the first embodiment, except that the shape of the lid container 18, the position of the recess 19 of the panel 11 and They differ in terms of shape.

The lid container 18 of the present embodiment has a hemispherical shape which is circular when viewed from above, that is, a parabola-shaped potting agent receiving portion 18a and hooks provided upright on the left and right of the potting agent receiving portion 18a. And the member 18b.

The hook member 18b has a claw portion 18d at its tip.
Is provided, and the claw portion 18d is locked to the step portion 12c inside the through hole 12, so that the lid container 18 is fixed to the panel 11.
It can be fixed to. The opening end of the potting agent receiving portion 18a serves as a cable pressing portion 18c, and the cable 13 is sandwiched and fixed by a recess 19 formed in an annular shape around the through hole 12 of the panel 11 and the cable pressing upper portion 18c. You can do it.

Therefore, the waterproof device for electric wiring of this embodiment also has the same effects as the first embodiment.
In addition, the cable extending from the back of the panel 11 can run in any direction of 360 degrees. That is, in the above-described first embodiment, the cable is connected to the flange 1 from the rear surface of the panel.
Although it was possible to project only in a certain direction of the concave portion 12b of 2a, that is, the cable pressing portion 14c of the lid container 14 and the recessed portion 16 of the panel 11, in the present embodiment, the cable pressing portion 18c is formed. The circular shape allows the cable 13 to be extended in any direction.

By the way, the waterproof device for electric wiring according to the first and second embodiments can be applied to any through hole that requires waterproof or dustproof treatment. It can also be applied to a through hole through which a wire harness is passed, a through hole through which a gas pipe, a water pipe, etc. are passed.

[0036]

As described above, in the waterproof device for electric wiring according to the first aspect of the present invention, the cable is passed through the through hole formed in the electric wiring target object from the back side of the through hole. By locking the lid container and filling the lid container with a predetermined amount of liquid sealant, the through hole can be sealed, so that waterproofing can be performed by simple work, and waterproof work is easy. Can be done in a short time. Moreover, since it is sufficient to leave the sealing agent even during the solidification of the sealing agent, no trouble is required. Further, since it has an extremely simple structure, it can be provided at a relatively low cost for mass production, and at the same time, anyone can perform the sealing work very easily.

The waterproof device for electric wiring according to the invention of claim 2 is
With the cable pressing portion of the lid container and the electrical wiring target object, the through hole can be sealed while the cable is clamped, and the cable can be fixed to the through hole with the sealant while the cable is clamped. The waterproof work is extremely easy, there is no concern that the cable will move even while the sealant is solidifying, and it can be left alone, so there is no trouble. Furthermore, the waterproof cable is fixed in the locked state, and the cable does not move significantly even after the sealing work is completed, so that a gap is created between the cable and the seal agent, and the seal agent is peeled off. Since it hardly happens, the waterproofness can be maintained extremely strongly.

The waterproof device for electric wiring according to the invention of claim 3 is
Since the lid container can be detachably locked in the through hole by the claw portion, it can be easily assembled without using a special tool, and the wiring can be re-wired before the sealant is filled, It is extremely easy to assemble each member for waterproofing work, and the workability is good.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a waterproof device for electric wiring according to a first embodiment of the present invention.

FIG. 2 is an exploded side view showing the waterproof device for electric wiring according to the first embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view showing a through hole and a cable retaining recess formed in an electric wiring object of the electric wiring waterproofing device according to the first embodiment of the present invention.

FIG. 4 is a plan view showing a lid container of the electric wiring waterproofing device according to the first embodiment of the present invention.

5 is a cross-sectional view showing an X-X cross section of the lid container of FIG.

FIG. 6 is a cross-sectional view showing a state immediately after the potting agent is injected into the waterproofing device for electric wiring according to the first embodiment of the present invention.

FIG. 7 is a perspective view from the top side showing the external appearance of the waterproof device for electric wiring according to the first embodiment of the present invention.

FIG. 8 is an exploded perspective view showing the structure of a waterproof device for electric wiring according to a second embodiment of the present invention.

FIG. 9 is a perspective view showing a state in which electric wiring is waterproofed by a conventional adhesive.

[Explanation of symbols]

 10 Waterproof Device for Electric Wiring 11 Panel 12 Through Hole 12a Flange 12b Recess 12c Stepped Part 13 Cable 14, 18 Lid Container 14a, 18a Potting Agent Receiving Part 14b, 18b Hooking Member 14c, 18c Cable Pressing Part 14d, 18d Claw 15 Potting Agent 16, 19 Dimple 17 Locking tool

Claims (3)

[Claims] 1. A through hole formed in an electrical wiring target object, a flange formed on a back surface side around the through hole, and a back surface of the through hole in a state where a cable penetrates the through hole. From the side, the through hole and the flange are covered, and at least the entire circumference of the opening end can be locked in a state of overlapping with the flange, and a predetermined amount of liquid sealant can be filled until the tip opening of the flange is immersed. A waterproof device for electric wiring, comprising: a lid container. 2. The lid container has a cable pressing portion that can press the cable to a predetermined position of an electric wiring target,
The waterproof device for electric wiring according to claim 1, wherein the cable can be held between the cable pressing portion and the electric wiring target object. 3. The lid container has a claw portion that can be engaged with a part of the through hole, and is attachable to and detachable from an electrical wiring target object. The waterproof device for electric wiring according to.