JPH08237344A - Waterproof case for portable telephone set - Google Patents

Abstract

PURPOSE: To make acoustic characteristic satisfactory by connecting a microphone and a speaker with a plug to be inserted to a jack for the head set of a portable telephone set to be effectively protected from water and salinity. CONSTITUTION: A speaker 60 is connected to the plug by a cord 78 and the plug is inserted to the jack for the head set of the portable telephone set in freely attachably and detachably. On the other hand, the speaker 60 housed in a rubber bush 58 is fixed by adhesive and a resonance chamber 65 is partitioned and formed between the case main body 4 and the speaker 60. Thus, the sound pressure of the speaker 60 can be risen. Since the microphone 70 is covered by the rubber bush 72, vibrating sound transmitted from the waterproof case 2 can be cut off. Then, a resonance chamber 73 adjusting frequency characteristic and sensitivity is provided in front of the microphone 70, the sensitivity of the microphone 70 can be improved and the hole 20 is sealed by a waterproof sheet 74.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a waterproof case of a mobile phone. The spread of mobile phones is remarkable in recent years,
It is used in a wide range of places. Therefore, it is considered to use the mobile phone on a cruiser, a fishing boat or the like at sea, or to use it on the beach for sea bathing.

For this reason, it is necessary to take measures such as the resistance of the mobile phone to seawater and measures against sand on the beach. In general,
Although there are mobile phones that have already incorporated the function of daily life waterproofing level, mobile phones that can withstand salt such as seawater have not been marketed.

Therefore, since there is a possibility of corrosion / clogging due to salt content, malfunctions, etc., it is necessary to protect the mobile phone in a waterproof case because it is necessary to protect the mobile phone considerably higher than general water. .

There is also a demand for a mobile phone and its waterproof case that can withstand outdoor use such as civil engineering work, use in an atmosphere where chemicals are attached such as a gas station, and use by persons involved in fishing.

[0005]

2. Description of the Related Art Conventional mobile phones are generally waterproof to the level of daily life, and should be used only with wet hands, or if they are slightly rained or splashed with water. I am giving it.

However, since it does not have sufficient resistance to seawater or the like and resistance to other harsh environments, the mobile phone is stored in a waterproof case and used in these harsh environments.

[0007]

The conventional waterproof case is
When the mobile phone is stored, the transmitter and the receiver are provided at positions substantially corresponding to the transmitter and the receiver of the mobile phone.

However, since the transmitter and the receiver have a structure in which the opening provided in the case is simply covered with a waterproof sheet, the acoustic characteristics of the mobile phone are greatly deteriorated when the mobile phone is housed in the waterproof case. There was a problem of doing.

The present invention has been made in view of the above points, and an object of the present invention is to effectively protect a mobile phone from moisture and salt contained in seawater and to provide good acoustic characteristics. It is to provide a waterproof case for a mobile phone that can be used.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a transmitter and a receiver at positions substantially corresponding to the transmitter and the receiver of the mobile phone when the mobile phone is stored. In a waterproof case of a mobile phone having a microphone, a microphone and a speaker are respectively attached to the inside of the transmitter and the receiver of the waterproof case, and the microphone and the speaker are inserted into a headset jack of the mobile phone housed in the waterproof case. A waterproof case for a mobile phone, which is characterized in that it is connected to a plug.

[0011]

When the plug is inserted into the headset jack of the mobile phone, the microphone and speaker in the waterproof case are connected to the transmitting / receiving circuit of the mobile phone. As a result, good acoustic characteristics can be maintained even when the mobile phone is stored in the waterproof case.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. First, the waterproof case 2 of the present embodiment will be schematically described with reference to FIGS. 1 and 2. 1A is a plan view of the embodiment, FIG. 1B is a left side view, and FIG. 2A is a rear view.
1B is a front view of FIG.

The waterproof case 2 is composed of a case body 4 and a lid 6 rotatably attached to the case body 4 by a shaft 8, and the hook 12 is engaged with the case body 4 and the lid 6. Are joined together.

A mobile phone 10 is housed in the waterproof case 2. As shown in FIG. 1 (A), a hole 14 for a receiver, a hole 20 for a transmitter, and a hole 22 for an alert sound are provided on the surface side of the waterproof case 2, and these holes are It is covered with a waterproof sheet.

On the front surface side of the waterproof case 2, an LCD display section 16 formed of a transparent material, a key top 18 formed on the key top of the mobile phone 10, and a window 24 for a reception lamp are further formed. . Further, a volume control switch 26 is provided on the side surface of the waterproof case 2.

Reference numeral 28 denotes an antenna hood, in which the antenna of the mobile phone is housed. A hook portion 30 having a hole 30a is formed at the upper end of the waterproof case 2, and a belt clip 32 is provided on the back surface thereof. As shown in FIGS. 1B and 2B, a pair of rail grooves 34 are formed on both sides of the waterproof case 2.

As shown in FIG. 3, the case body 4 is divided into a first body 4a and a second body 4b. As shown in FIG. 4, the gasket 36 that seals the waterproof case 2 is divided into a first gasket 36a and a second gasket 36b at the tip.

A gasket 3 is provided between the case body 4 and the lid 6.
6, the first gasket 36a is sandwiched between the first main body 4a and the second main body 4b, and the second gasket 36b is sandwiched between the second main body 4b and the lid 6.
The inside is sealed. The gasket 36 is usually adhered to the case body 4 side.

As shown in FIG. 5, the waterproof case 2 can be hung from a wall surface, a pillar or the like by hooking the hook hooking portion 30 on a hook 40 fixed to the wall 38. Further, as shown in FIG. 6, it can be detachably accommodated in a holder 42 fixed to the wall 38.

Protrusions 42a that fit into the rail grooves 34 of the waterproof case are formed on both sides of the holder 42. When the waterproof case 2 is inserted into the holder 42, the rail grooves 34 of the waterproof case 2 are aligned with the holder 42. It fits into the convex portion 42a.

A hole 42b for a simple lock is provided on the back surface of the waterproof case 2, and when the waterproof case 2 is inserted into the holder 42, the belt clamp 32 enters the hole 42b and the waterproof case 2 is inserted into the holder 42. You can easily lock with.

Next, referring to FIG. 7, the alert (ringing tone) resonance chamber structure will be described in detail. Generally, when a mobile phone is stored in a waterproof case, the acoustic system changes.

Since the sound is hermetically closed, the sound pressure of the speaker decreases and the sensitivity of the microphone decreases. In addition, the sound pressure of alerts (ringing sounds) also decreases. The microphone and the speaker are acoustically coupled, and the sound picked up by the speaker is picked up by the microphone to cause howling.

Therefore, in order to obtain a sound pressure higher than the specified value, it is necessary to provide an alert that gives a higher sound pressure, but since the mobile phone has a specified performance limit for downsizing. , When the mobile phone is stored in the waterproof case, the sound pressure will be reduced. Therefore, it is effective to increase the sound pressure by using the resonance chamber.

In FIG. 7, reference numeral 46 denotes an alert attached to the case 44 of the mobile phone 10, which is housed in the rubber bush 47. A resonance case 48 defining a first resonance chamber 49a and a second resonance chamber 49b is bonded to the case body 4 of the waterproof case 2.

A sealing gasket 50 is arranged between the waterproof case 2 and the resonance case 48, and a sealing gasket 52 is arranged between the case 44 and the resonance case 48 of the mobile phone 10. Further, the alert hole 22 is closed with a waterproof film 54.

The sound emitted from the alert 46 of the mobile phone 10 enters the first resonance chamber 49a and is expanded, and is further enlarged in the second resonance chamber 49b and emitted from the hole 22. Since the waterproof case 2 of this embodiment is provided with such a resonance chamber structure, the alert sound of the mobile phone 10 housed in the waterproof case 2 can be clearly heard.

Next, with reference to FIG. 8, a speaker and microphone mounting structure, which is one of the features of the present invention, will be described. A rib 56 is integrally formed with the case body 4 near the upper end of the waterproof case 2.

A speaker 60 housed in a rubber bush 58 is attached to the rib 56 by adhesion or the like. A resonance chamber 65 is defined between the case body 4 and the speaker 60, and the speaker hole 14 is closed with a waterproof sheet 66.

The speaker 60 is connected by a cord 78 to a plug 80 shown in FIG. 1A, and the plug 80 is detachably inserted into a headset jack of a mobile phone. Since the resonance chamber 65 is provided, the sound pressure of the speaker 60 can be increased.

A rib 68 is formed integrally with the case main body 4 near the lower end of the waterproof case 2, and the rib 68 is formed.
Microphone 70 housed in rubber bush 72
Are attached by adhesion or the like.

Since the microphone 70 is covered with the rubber bush 72, the vibration sound transmitted from the waterproof case 2 can be cut off. A resonance chamber 73 for adjusting frequency characteristics and sensitivity is provided in front of the microphone 70, so that the sensitivity of the microphone can be increased. The hole 20 for the microphone is closed with a waterproof sheet 74. The microphone 70 is connected by a cord 78 to the plug 80 shown in FIG.

As described above, in this embodiment, since the speaker 60 and the microphone 70 are provided inside the waterproof case 2 and these are connected to the plug 80 by the cord 78, by inserting the plug 80 into the headset jack of the mobile phone, The speaker 60 and the microphone 70 are connected to the transmission / reception circuit of the mobile phone. Therefore, even when the mobile phone 10 is housed in the waterproof case 2, the acoustic characteristics of the speaker 60 and the microphone 70 are not deteriorated.

FIG. 9 shows the shockproof structure and the float structure of the waterproof case. Acceleration of 100G level is applied at the time of drop impact. Therefore, it is often impossible to reduce the size of the housing. The waterproof case 2 of the present embodiment can absorb impact force by providing the cushion members 76 at the four corners and the back surface of the mobile phone 10 housed in the case.

Further, by forming the cushion material 76 from a foam material, the amount of air in the waterproof case 2 is adjusted to increase the buoyancy, so that the waterproof case 2 can be picked up without sinking when falling into the water. it can.

Referring to FIG. 10, a waterproof case 2'of another embodiment of the present invention is shown. A printed circuit board 82 is attached to the waterproof case 2 ', and an amplifier 84 and a battery 86 are mounted on the printed circuit board 82.

Then, as shown in the block diagram of FIG. 11, the mobile phone 10 is connected to an amplifier 84, and this amplifier has a power source (battery) 86, a speaker 60 and a microphone 70.
Is connected.

According to this embodiment, since the amplifier 84 is provided in the waterproof case 2 ', the sound pressure of the speaker 60 is increased,
The sensitivity of the microphone 70 can be increased.

[0039]

According to the present invention, a microphone and a speaker are attached to the inside of the transmitter and the receiver of the waterproof case, respectively, and the voice transmission and reception sound is sent to the microphone and the speaker from the headset jack of the mobile phone. With this configuration, it is possible to improve the acoustic characteristics of the mobile phone housed in the waterproof case.

Further, the waterproof case of the present invention has a waterproof function, a dustproof function, a holder function and a float function, and
Excellent impact resistance and chemical resistance.

[Brief description of drawings]

FIG. 1 is an external view (1) of an embodiment of the present invention.

FIG. 2 is an external view (No. 2) of the embodiment of the present invention.

FIG. 3 is a view showing a mounting state of a gasket.

FIG. 4 is a perspective view of a gasket and an antenna hood.

FIG. 5 is a diagram showing a state in which the waterproof case is hooked on a hook.

FIG. 6 is a view showing a state in which the waterproof case is inserted into the holder.

FIG. 7 is a cross-sectional view showing an alert resonance chamber structure.

FIG. 8 is a partial cross-sectional view showing a speaker and microphone mounting structure.

FIG. 9 is a diagram showing a shock resistant structure.

FIG. 10 is a diagram showing another embodiment of the present invention.

FIG. 11 is a block diagram of another embodiment.

[Explanation of symbols]

 2 Waterproof case 4 Case body 6 Lid 14 Earpiece 20 Transmitter 22 Alert part 60 Speaker 70 Microphone 80 Plug

Claims (5)

[Claims] 1. A waterproof case of a mobile phone having a transmitter and a receiver at positions substantially corresponding to the transmitter and the receiver of the mobile phone when the mobile phone is housed, wherein the transmitter and the receiver of the waterproof case are provided. A waterproof case for a mobile phone, characterized in that a microphone and a speaker are attached to the inside of a receiver, and the microphone and the speaker are connected to a plug inserted into a headset jack of the mobile phone housed in the waterproof case. 2. The waterproof case for a mobile phone according to claim 1, further comprising an amplifier connected to the microphone and the speaker of the waterproof case. 3. The waterproof case for a mobile phone according to claim 2, further comprising a power supply for supplying power to the microphone, the speaker, and the amplifier. 4. The waterproof case comprises a case body and a lid, and an integrated gasket between the case body and the lid.
The waterproof case for a mobile phone according to claim 1, wherein a gasket for the antenna hood is incorporated. 5. The waterproof case for a mobile phone according to claim 1, wherein an alert resonance chamber is provided inside the waterproof case that roughly corresponds to the alert section of the mobile phone.