JPH07146990A - Emergency alarm device for waterproof structure - Google Patents

Abstract

PURPOSE:To easily assemble the device and to securely prevent the entrance of rainwater. CONSTITUTION:The emergency alarm device is constituted by fixing a cover 3 which covers the front surface and peripheral edge of a case main body 1. The cover 3 has an outer peripheral wall 3A along the peripheral edge. A packing 2 made of a rubber elastic body is put between the cover 3 and case main body 1 to connect them in waterproof structure. The case main body 1 has an inner peripheral wall 1A along the peripheral edge of the front surface. The packing 2 has a waterproof groove 2A into which the inner peripheral wall 1A of the case body 1 is inserted and also has plural elastic linear projections 2B projecting to the internal surface of the cover 3. While the cover 3 is fixed to the case body 1, the waterproof groove 2A of the packing 2 comes into contact with the inner peripheral wall 1A of the case body 1 and the elastic linear projections 2B come into contact with the internal surface of the cover 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof emergency alarm device having a cover fixed to the front surface of a case body.

[0002]

2. Description of the Related Art As an emergency alarm device, there is an emergency bell.
The emergency bell incorporates various electronic components to give an alarm in an emergency. The electronic components are fixed to the case body. A metal plate cover is fixed to the front surface of the case body in order to prevent rainwater from entering the case body containing the electronic components. The cover also serves to beautifully decorate the front of the case body. The cover has an outer peripheral wall formed by bending the peripheral edge inward so as to cover the front surface and the peripheral edge of the case body. Insert the case body into the outer peripheral wall of the cover to fix the cover to the case body. In this state, the cover that covers the case body can cover the front surface and the peripheral edge of the case body for a clean surface treatment.

In order to close the gap between the case body and the cover to form a waterproof structure, as shown in FIG.
Has the packing 2 bonded at the position shown by hatching in the figure. The packing 2 is formed by molding a rubber-like elastic body into a band shape, and is bonded to the outer peripheral surface of the case body 1 via an adhesive tape or a rubber-based adhesive as shown in FIG. After fixing the packing 2 to the case body 1, cover the case body 1 with the cover 3
Then, the cover 3 is fixed to the case main body 1 by putting the cover 3 inside the outer peripheral wall.

[0004]

As shown in FIG. 2, the emergency alarm device of this structure has a packing 2 composed of an outer peripheral wall 3A formed by bending a peripheral edge of a cover 3 and an outer peripheral surface of a case body 1. Is sandwiched, and a waterproof structure is provided between the cover 3 and the case body 1. The rubber-like elastic packing 2 adhered to the case body 1 is elastically pressed against the inner surface of the outer peripheral wall 3A of the cover 3 to realize a waterproof structure. The emergency alarm device of this structure has a drawback that it is difficult to make it completely waterproof. It covers the entire inner surface of the outer peripheral wall 3A of the cover 3 with the packing 2
This is because it is difficult to adhere the surfaces of the.

The thick packing 2 is formed on the outer peripheral wall 3A of the cover 3.
Is strongly pressed against the inner surface of the outer peripheral wall 3A and the packing 2.
Prevent gaps between them. However, the case body 1 with the thick packing 2 bonded to the outer peripheral surface cannot be easily inserted into the outer peripheral wall 3A of the cover 3. Thick packing 2
Is expanded and becomes larger than the outer peripheral wall 3A of the cover 3, so that the cover 3 is inserted with the entire packing 2 crushed thinly. The packing 2 adhered to the outer peripheral surface of the case body 1 is extremely difficult to crush. If a thin packing 2 is used to make it easier to put the case body 1 inside the cover 3, a gap is created between the case body 1 and the cover 3, which makes it difficult to form a completely waterproof structure. This is because it is difficult to make the gap between the outer peripheral surface of the case body 1 and the inner surface of the outer peripheral wall 3A of the cover 3 constant with extremely high accuracy. When the gap between the cover 3 and the inner surface of the outer peripheral wall 3A is partially widened, a gap is created in this portion,
It has the drawback of rainwater infiltration.

The rainwater that has penetrated through the packing causes damage to the electronic components fixed to the case body. For this reason, it is important to fix the cover to the case body as a completely waterproof structure that prevents rainwater from entering the case body.

The present invention was developed for the purpose of realizing this. The important object of this invention is to
(EN) It is possible to provide an emergency alarm device having a waterproof structure which can be easily and easily assembled and can surely prevent intrusion of rainwater.

[0008]

In order to achieve the above-mentioned object, an emergency alarm device having a waterproof structure of the present invention has the following configuration. The emergency alarm device has a cover 3 fixed to cover the front surface and the peripheral edge of the case body 1. The cover 3 is provided with an outer peripheral wall 3 </ b> A along the peripheral edge so as to cover the peripheral edge of the case body 1. The cover 3 is fixed to the case body 1 by guiding the case body 1 inside the outer peripheral wall 3A. Furthermore, cover 3
In order to make the connecting portion between the case body 1 and the case body 1 waterproof, a rubber-like elastic packing 2 is provided between the cover 3 and the case body 1.
Are sandwiched between. The packing 2 is in close contact with the inner surface of the cover 3 and the outer peripheral edge of the case body 1, and has a waterproof structure between the cover 3 and the case body 1.

Further, the emergency alarm device of the present invention is characterized by having all the following configurations. The case body 1 has an inner peripheral wall 1A along the peripheral edge of the front surface. In order to easily connect the packing 2 to the inner peripheral wall 1 </ b> A of the case body 1, the packing 2 is the inner peripheral wall 1 of the case body 1.
It is formed in a rod shape or an annular shape so as to be elastically deformable along A, and has a waterproof groove 2A into which it is fitted at a position facing the inner peripheral wall 1A. Further, the packing 2 has a plurality of elastic ridges 2 </ b> B protruding on the inner surface of the cover 3 so that the packing 2 can be in close contact with the inner surface of the cover 3 with the cover 3 fixed to the case body 1. When the cover 3 is fixed to the case body 1, the packing 2
Attaches the waterproof groove 2A to the inner peripheral wall 1A of the case body 1,
The elastic ridge 2B is brought into close contact with the inner surface of the cover 3 to connect the case body 1 and the cover 3 to the waterproof structure.

In a further preferred aspect of the present invention, the inner peripheral wall 1A is formed in a rail shape having a substantially cross section. The packing is formed in a substantially C-shaped cross section so as to cover the inner peripheral wall 1A.

In a further preferred aspect of the present invention, the packing has a deformation escape portion 2C that facilitates elastic deformation due to close contact with the inner peripheral wall 1A.

In a further preferred aspect of the present invention, the packing has a press-fitting protrusion 2D which is press-fitted between the outer peripheral wall 3A and the inner peripheral wall 1A or between the inner peripheral wall 1A and the case body 1 to be in close contact therewith.

[0013]

In the waterproof emergency alarm device of the present invention, the cover 3 is fixed to the case body 1 as follows. The packing 2 is connected to the case body 1. FIG. 3 shows the packing 2 and the case body 1 before being connected.
The packing 2 shown in this figure is an inner peripheral wall 1A of the case body 1.
It is shaped like a U along the line. Packing 2 in this figure
Are fixed to both sides and the upper edge of the case body 1 except the lower edge. The lower edge of the case body 1 has the case body 1 and the cover 3
The packing 2 is not clamped in order to drain rainwater that enters between and. The packing 2 has a case body 1 in the waterproof groove 2A.
The inner peripheral wall 1A is inserted and connected to the case body 1. The case body 1 to which the packing 2 is connected is inserted into the outer peripheral wall 3A of the cover 3 to attach the cover 3 to the case body 1
Fixed to. To fix the cover 3 to the case body 1,
For example, a set screw penetrating the cover 3 is screwed into and fixed to the case body 1. When the cover 3 is fixed to the case body 1, the packing 2 is sandwiched between the case body 1 and the cover 3 as shown in FIG. The packing 2 shown in this figure is
The waterproof groove 2A is brought into close contact with the inner peripheral wall 1A of the case body 1, and the elastic ridges 2B are brought into close contact with the inner surface of the cover 3 so that the case body 1 and the cover 3 have a waterproof structure.

Further, according to a further preferred aspect of the present invention, the inner peripheral wall 1A is formed in a rail shape having a substantially cross section, and the packing 2 has a substantially cross section C so as to cover the inner peripheral wall 1A.
Since it is formed in a letter shape, the case main body has a wide waterproof structure on the upper side, the lower side and the side.

Further, according to a further preferred aspect of the present invention, since the packing has a deformation escape portion 2C which facilitates elastic deformation due to the close contact with the inner peripheral wall 1A, when the packing closely contacts the inner peripheral wall 1A. , Packing 2 is inner peripheral wall 1
Adhere while adjusting the shape so that it follows the shape of A.

Further, according to a further preferred aspect of the present invention, the packing has a press-fitting projection 2D which is press-fitted between the outer peripheral wall 3A and the inner peripheral wall 1A or between the inner peripheral wall 1A and the case body 1 to be in close contact therewith. Since it has, the adhesion state is further improved.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. The waterproof emergency alarm device shown in FIG. 3 includes a case body 1 integrally formed of plastic, a rubber-like elastic packing 2, and a cover 3 formed by pressing a metal plate. The case body 1 of the emergency alarm device includes an emergency switch that is pressed in an emergency, a speaker that emits an alarm sound, an electronic circuit for driving the speaker, and the like. Since the waterproof structure for connecting the cover is characteristic, the structure for connecting the cover and the case body will be described in detail below. The other part can be any structure currently used or to be developed.

The case body 1 shown in FIG. 3 has an inner peripheral wall 1A formed along the peripheral edge thereof. The inner peripheral wall 1A protrudes from the surface of the case body 1 and is formed to have a constant width and height. The height of the inner peripheral wall 1A, the packing 2 is connected here,
The packing 2 is designed so that the front surface of the packing 2 elastically presses and closely contacts the inner surface of the cover 3. The case body 1 shown in FIG. 3 and FIG. 4 is located inside the inner peripheral wall 1A and has a convex portion 5 at a part thereof.
Is provided. The convex portion 5 is a portion for fixing the speaker,
It is provided in the part that fixes the plate. When the convex portion 5 collides with the inner surface of the cover 3, the front surface of the packing 2 cannot be brought into close contact with the inner surface of the cover 3. Therefore, the inner peripheral wall 1A
Allows the packing 2 to be closely attached to the inner surface of the cover 3 with the cover 3 and the packing 2 sandwiched therebetween, with the convex portion contacting the inner surface of the cover 3, or with the convex portion not contacting the cover 3. Designed to height.

The case body 1 shown in these figures has partition walls 4 which are located above and below a portion for fixing the speaker and which extend in the horizontal direction. The partition walls 4 are arranged above and below the portion to which the speaker is attached. The partition wall 4 is provided for flowing rainwater that has infiltrated into the mounting portion of the speaker to both sides. A sound hole is opened in the cover 3 at the portion where the speaker is fixed. This is because the sound of the speaker is efficiently radiated to the outside. Rainwater enters the cover 3 having the sound holes. The partition wall 4 separates the rainwater that has entered from the sound hole and flows it down to both sides. Both ends of the partition wall 4 are inclined downwardly so that rainwater can easily flow down. Partition wall 4
Connects the packing 2 having the same cross-sectional shape as the packing 2 connected to the inner peripheral wall 1A so that the front edge is watertightly adhered to the inner surface of the cover 3.

The packing 2 is manufactured by molding a rubber-like elastic body such as natural or synthetic rubber. This packing 2
Has an H-shaped cross section shown in FIG. 5 so that the inner peripheral wall 1A and the partition wall 4 can be easily connected to each other without water leakage. That is, the packing 2 is a rod-like or annular shape that is elastically deformable along the inner peripheral wall 1A of the case body 1, has a waterproof groove 2A into which it is fitted at a position facing the inner peripheral wall 1A, and is elastic on the inner surface of the cover 3. It has two elastic ridges 2B that closely adhere to each other and waterproof. The packing 2 shown in FIG. 5 has two elastic ridges 2B formed on both sides. However, the packing 2 used in the emergency alarm device of the present invention may be formed with three or more elastic ridges 2B.

The waterproof groove 2A of the packing 2 is designed to have a width that allows the inner peripheral wall 1A and the partition wall 4 to be inserted therein and to be in close contact with the surface thereof. In the packing 2 shown in FIG. 5, the opening of the waterproof groove 2A is narrowly formed. The waterproof groove 2A having this shape is characterized in that, when inserted in the inner peripheral wall 1A of the case body 1 and the partition wall 4, the elasticity of the packing 2 allows the waterproof groove 2A to be in close contact with the surfaces of the inner peripheral wall 1A and the partition wall 4 for reliable waterproofing. Further, there is also a feature that the opening of the waterproof groove 2A can be widened and easily inserted into the inner peripheral wall 1A and the partition wall 4.

In the packing 2 shown in FIG. 5, the elastic ridges 2B provided on both sides are inclined slightly outward. As shown in FIG. 6, the slanting elastic ridges 2B project to the bent portion of the cover 3 with the outer peripheral wall 3A in a state where the cover 3 is fixed,
It has the feature that it can be more reliably waterproofed. In addition, elastic ridge 2B
When the cover 3 is fixed to the case body 1 by crushing, the elastic ridges 2B are easily elastically deformed, and the cover 3 can be surely brought into close contact with the inner surface of the cover 3. Furthermore, FIG.
In the packing 2 shown in FIG. 2, the width (b) of the elastic ridge 2B is wider than the inner width (a) of the waterproof groove 2A. The packing 2 having this shape is characterized in that when the elastic ridge 2B is pressed by the inner surface of the cover 3, the elastic ridge 2B is easily deformed, and the inner surface of the cover 3 can be more firmly attached.

The packing 2 having this shape can also be fixed to the back surface of the case body 1, as shown in FIG. As shown in FIG. 7, the case body 1 connecting the packing 2 to the back surface also has an inner peripheral wall 1A formed on the periphery of the back surface. The inner peripheral wall 1A can be formed by providing a groove on the peripheral edge of the case body 1. The case body 1 of this shape can be connected to the packing 2 on the inner peripheral walls 1A on the front and back sides, and the cover 3
And the case body 1 can be more reliably waterproofed.

Packing 2 connected to the back of the case body 1
Is preferably adhered to the inner peripheral wall 1A. This is to prevent the cover 3 from coming off in a fixed state. The packing 2 sandwiched between the front surface of the case main body 1 is pressed against the case main body 1 by the cover 3 and therefore does not come off. Therefore, it is not necessary to bond it to the inner peripheral wall 1A, but it goes without saying that it may be bonded.

Next, FIGS. 8 to 12 show a further preferred embodiment of the present invention. The emergency alarm devices shown in these figures are different in that the packing 2 has a different shape as compared with the embodiment shown in FIGS. 1 to 7 and that the inner peripheral wall 1A has a different sectional shape. The packing shown in FIGS. 8 to 12 uses two kinds of packing, packing 2 ′ and packing 2 ″. Further, the inner peripheral wall 1A is formed in a rail shape having a substantially T-shaped cross section as shown in FIG. Has been done.

First, the packing 2'is formed in a substantially C-shaped cross section as shown in FIG. Packing 2'is
Similar to the packing 2 described above, the waterproof groove 2A and the elastic ridges 2B are provided. Further, the width (b) of the elastic ridge 2B is made wider than the inner width (a) of the waterproof groove 2A. Further, the packing 2'includes a deformation escape portion 2C that facilitates elastic deformation due to close contact with the inner peripheral wall 1A. Further, the packing 2 ′ is provided with a press-fitting projection 2D which is press-fitted between the inner peripheral wall 1A and the case body 1 to be in close contact therewith.

Since the packing 2'is formed to have a substantially C-shaped cross section so as to cover the inner peripheral wall 1A, the case main body can have a wide waterproof structure upward, downward, or laterally. In addition, since the packing 2'has a deformation escape portion 2C that facilitates elastic deformation due to the close contact with the inner peripheral wall 1A, when the packing 2'closely contacts the inner peripheral wall 1A, the packing 2'is The shape can be closely adhered while the shape is adjusted so as to follow the shape of 1A, and at the same time, the cover 3 can absorb the excessive elastic deformation even if the packing 2 ′ is pressed too much. Further, since the packing 2'has a press-fitting protrusion 2D which is press-fitted and closely adhered between the inner peripheral wall 1A and the case body 1, the contact state can be further improved. The press-fitting protrusion 2D is formed on the outer peripheral wall 3A.
It may be arranged between the inner peripheral wall 1A and the inner peripheral wall 1A.

On the other hand, the packing 2 "also has a deformation escape portion 2C and a press-fitting projection 2D, like the packing 2 '. And, the packing 2" closely adheres to the partition wall 4.

[0029]

EFFECT OF THE INVENTION The waterproof emergency alarm device of the present invention is
You can completely waterproof between the cover and the case body,
It has the feature that it can be assembled easily, easily, and efficiently. The emergency alarm device according to the present invention is provided with an inner peripheral wall at the peripheral edge of the front surface of the case main body, a waterproof groove of the packing is inserted into the inner peripheral wall, and the packing is sandwiched between the cover and the case main body. This is because the plurality of elastic ridges provided are brought into close contact with the inner surface of the cover. In particular, the emergency alarm device of the present invention is characterized in that the case main body having the packing connected thereto can be smoothly inserted into the outer peripheral wall of the cover to completely waterproof the cover. This is because the packing makes a plurality of elastic ridges adhere to the inner surface of the cover to waterproof it.
The waterproof packing with this structure requires the packing to be crushed by the outer peripheral wall of the cover to be waterproof when the case body is inserted inside the outer peripheral wall of the cover, as in the conventional emergency alarm device shown in FIG. Absent. The packing can be waterproofed by pressing the elastic ridges against the inner surface of the cover, so that the cover can be connected to the case body for waterproofing.

According to a further preferred aspect of the present invention, the inner peripheral wall 1A is formed in a rail shape having a substantially cross section, and the packing is formed in a substantially C shape in cross section so as to cover the inner peripheral wall 1A. Therefore, the case body has a wide waterproof structure on the upper side, the lower side and the side.

Further, according to a further preferred aspect of the present invention, since the packing has a deformation escape portion 2C which facilitates elastic deformation due to the close contact with the inner peripheral wall 1A, when the packing closely contacts the inner peripheral wall 1A. , Packing is inner wall 1A
Adhere while adjusting the shape so that it follows the shape of.

Further, according to a further preferred aspect of the present invention, the packing has a press-fitting projection 2D which is press-fitted between the outer peripheral wall 3A and the inner peripheral wall 1A or between the inner peripheral wall 1A and the case body 1. Since it has, the adhesion state is further improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a cover and a case body of a conventional emergency alarm device.

FIG. 2 is a vertical cross-sectional view showing a connecting portion between the cover and the case body of the emergency alarm device shown in FIG.

FIG. 3 is an exploded perspective view of an emergency alarm device according to an embodiment of the present invention.

4 is a vertical cross-sectional view of the case body shown in FIG.

5 is a sectional view of the packing of the emergency alarm device shown in FIG.

6 is a cross-sectional view of a connecting portion between a case body and a cover of the emergency alarm device shown in FIG.

7 is a perspective view of the case body shown in FIG. 3 as seen from the back side.

FIG. 8 is an exploded perspective view of an emergency alarm device according to another embodiment of the present invention.

9 is a sectional view of the packing 2'of the emergency alarm device shown in FIG.

FIG. 10 is a sectional view of the packing 2 ″ of the emergency alarm device shown in FIG.

FIG. 11 is a cross-sectional view of a connecting portion between the case body and the cover of the emergency alarm device shown in FIG.

FIG. 12 is a cross-sectional view of a connecting portion between the case body and the cover of the emergency alarm device shown in FIG.

[Explanation of symbols]

1 Case body 1A Inner wall 2,
2 ', 2 "packing 2A waterproof groove 2B elastic ridge 2C
Deformation relief part 2D Press-fitting protrusion 3 Cover 3A
Waterproof groove 4 Partition wall 5 Convex part

Claims (4)

[Claims] 1. A cover 3 covering a front surface and a peripheral edge of the case body 1 is fixed, and the cover 3 has an outer peripheral wall 3A along the peripheral edge, and the case main body 1 is guided inside the outer peripheral wall 3A. The cover 3 is fixed to the case body 1, and is further sandwiched between the cover 3 and the case body 1 by a packing 2 made of a rubber-like elastic material, so that the packing 2 is attached to the inner surface of the cover 3 and the outside of the case body 1. An emergency alarm device having a waterproof structure, which has a waterproof structure between the cover 3 and the case body 1 in close contact with the peripheral edge, having the following configurations. The case body 1 has an inner peripheral wall 1A along the peripheral edge of the front surface. The packing 2 is formed in a rod shape or an annular shape so as to be elastically deformable along the inner peripheral wall 1A of the case body 1, and has a waterproof groove 2A into which it is fitted at a position facing the inner peripheral wall 1A. The packing 2 has a plurality of elastic ridges 2B protruding toward the inner surface of the cover 3. With the cover fixed to the case body 1, the waterproof groove 2A of the packing 2 is provided with the inner peripheral wall 1 of the case body 1.
The elastic ridge 2B is in close contact with A, and the elastic ridge 2B is in close contact with the inner surface of the cover 3 to connect the case body 1 and the cover 3 to a waterproof structure. 2. The waterproof emergency alarm device according to claim 1, wherein the emergency alarm device has the following configuration. The inner peripheral wall 1A is formed in the shape of a rail having a substantially cross section in cross section. The packing has a cross section of approximately C so as to cover the inner peripheral wall 1A.
It is formed in a letter shape. 3. The waterproof emergency alarm device according to claim 1, which has the following configuration. The packing has a deformation escape portion 2C that facilitates elastic deformation due to close contact with the inner peripheral wall 1A. 4. The waterproof emergency alarm device according to claim 1, having the following configuration. The packing has a press-fitting protrusion 2D which is press-fitted between the outer peripheral wall 3A and the inner peripheral wall 1A or between the inner peripheral wall 1A and the case body 1 to be in close contact therewith.