JPH0744114Y2 - Sound transmission hole structure for telephone sounder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a sound transmission hole for transmitting sound from a sounder (sound generation device) for generating sound such as a ringing sound in a telephone to the outside. Regarding the structure.

[Conventional technology]

FIG. 4 is a partially cutaway side view showing a sound transmission hole structure for a sounder of a conventional telephone, and FIG. 5 is a plan view of a sounder mounting portion.
FIG. 6 is a side sectional view of the sounder mounting portion.

In FIGS. 4 to 6, reference numeral 1 denotes a telephone, which is composed of a main body 2 and a handset 3, both of which are connected by a cord 4. The main body 2 has a recessed handset mounting portion 2a corresponding to a part of the handset 3 on the surface, and the handset 3 is mounted so as to be integrated by engaging both ends of the handset mounting portion 2a. To be done. Although not shown, either the main body 2 or the handset 3 side is provided with a dial or a push button for inputting the telephone number of the other party when making a call.

Reference numeral 5 is a sounder (sound generation device) provided inside the main body 2 for generating a ringing sound or the like, with the sound generation surface 5a on the side that generates sound facing the bottom surface of the main body 2.
A plurality of bosses 6 that rise from the bottom surface of the main body 2 to the inside are fixed by screwing them with screws 7.

8 is arranged so as to face the sound generating surface 5a of the sounder 5,
It is a cylindrical rib provided between the bosses 6 and has a slit portion 8a at one position on the peripheral surface.

Reference numeral 9 denotes a ring-shaped rubber packing placed on the upper surface of the rib 8, and when the sounder 5 is attached to the boss 6 by the screw 7, the sound generating surface 5a of the sounder 5 does not have a gap with the upper end surface of the rib 8. It is interposed so as to be in close contact. In this way, the inside of the rib 8 whose upper surface is closed by the sound generating surface 5a of the sounder 5 is closed by releasing only the slight slit portion 8a, and the front air chamber 10 for reverberating the sound from the sounder 5 is formed. Become.

Reference numeral 11 is a sound transmission hole formed through the bottom surface of the main body 2 so as to be continuous with the vicinity of the slit portion 8a of the rib 8.

With the configuration described above, when the sounder 5 is fixed to the main body 2 with the screw 7 via the boss 6, the sound generating surface 5a of the sounder 5 is brought into close contact with the upper end surface of the rib 8 via the rubber packing 9.

As a result, the front air chamber 10 is formed, and when sound is generated from the sound generating surface 5a of the sounder 5 in the direction of the arrow in the figure, the sound reverberates in the front air chamber 10 and the sound pressure level becomes high.

The echoed sound leaks to the outside from the slit portion 8a of the rib 8 and is further connected to the slit 8a through the sound transmission hole 11
It was supposed to be emitted to the outside of the bottom side of the main body 2.

[Problems to be solved by the device]

However, according to the conventional technique described above, in the structure having only the slit portion provided on the rib forming the front air chamber and the sound transmission hole continuously provided in the vicinity of the slit portion, the slit portion is provided. The sound leaked from the main part of the sound escapes into the main body before it escapes from the sound transmission hole to the outside of the main body.
There is a problem that the sound pressure level emitted from the sound transmission hole to the outside of the bottom surface becomes a low level sound pressure that does not reach a desired sound pressure level.

The present invention has been made to solve such a problem, and the sound from the sounder whose sound pressure level is set to a high level by the anterior chamber is used to reduce the rib slits and sound transmission holes without lowering the sound pressure level. It is an object of the present invention to provide a sound transmission hole structure for a telephone which can be sent to the outside of the main body via the device and is easy to manufacture.

[Means for Solving the Problems]

In order to achieve this object, the present invention forms a cylindrical rib on the bottom surface of the main body that constitutes the telephone together with the handset, and closely mounts the sound generating surface of the sounder so that it faces the upper end of the rib. The inside of the rib is a front air chamber for reverberating the sound from the sound generating surface, and in a part of the rib peripheral surface so as to be parallel to the direction from the sound generating surface to the bottom surface of the front air chamber. A slit portion is provided, and a sound transmission hole is formed at the base of the slit portion so as to be continuous with the slit portion on the bottom surface side of the main body so that the echo sound of the front air chamber is transmitted to the slit portion and the sound transmission hole. In the sound transmission hole structure for the sounder of the telephone that sends out to the outside of the main body via
A guide portion which is in contact with the sound transmitting hole and is erected in a wall shape so as to guide the sound from the slit portion to the sound transmitting hole is provided so as to face the slit portion of the rib with the sound transmitting hole interposed therebetween. It is characterized by

[Action]

In the present invention having such a configuration, when sound is emitted from the sound generating surface of the sounder, this sound reverberates in the front air chamber whose periphery is covered by the ribs and the upper surface is closed by the sounder, resulting in a high sound pressure level. After being raised, it comes out from the rib slit.

Then, this sound hits the guide portion formed facing the slit portion and is guided along the guide portion toward the sound transmission hole below, and the sound is transmitted from the sound transmission hole to the main body without lowering the sound pressure level. It is sent to the outside.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially cutaway side view of a sound transmission hole structure for a sounder showing an embodiment of the present invention, FIG. 2 is a plan view of a sounder mounting portion in the present embodiment, and FIG. 3 is a side sectional view of FIG. It is a figure.

In FIG. 1 to FIG. 3, reference numeral 1 is a telephone including a main body 2 and a handset 3, both of which are connected by a cord 4.

On the front surface side of the main body 2, a handset mounting portion 2a which is recessed corresponding to a part of the handset 3 is formed, and the handset 3 is mounted so that both ends thereof are engaged with the handset mounting portion 2a so as to be integrated. It is supposed to be done.

Although not shown, a dial, a push button, or the like for inputting the telephone number or the like of the other party when making a call is provided on either the body 2 or the handset 3 side.

Reference numeral 5 denotes a sounder (sound generation device) provided inside the main body 2 for generating a ringing sound or the like, and a sound generation surface 5a for generating sound is directed to the bottom surface side of the main body 2 so that the bottom surface of the main body 2 Is fixed to the plurality of bosses 6 which are formed by rising from the inside to the inside by screws 7 with screws.

8 is arranged so as to face the sound generating surface 5a of the sounder 5,
Is a substantially cylindrical rib provided between the bosses 6,
A slit portion 8a is provided at an arbitrary position on the circumferential surface so as to be parallel to the direction from the sound generating surface 5a to the bottom surface of the front air chamber to be described later.

Reference numeral 9 denotes a ring-shaped rubber packing placed on the upper surface of the rib 8, and when the sounder 5 is attached to the boss 6 by the screw 7, the sound generating surface 5a of the sounder 5 is located on the upper end surface of the rib 8 without a gap. It is interposed so as to be in close contact. In this way, the inside of the rib 8 whose upper surface is closed by the sound generating surface 5a of the sounder 5 is closed by releasing only the slight slit portion 8a, so that the sound from the sounder 5 is reflected in the front air chamber. Will be 10.

Reference numeral 11 is a sound transmission hole formed through the bottom surface of the main body 2 so as to be continuous with the vicinity of the slit portion 8a of the rib 8.

A sound transmission hole 12 rises from the outer end of the sound transmission hole 11 and opposes the slit portion 8a of the rib 8 to shield a part of sound leaking from the slit portion 8a and to be formed in the base portion. It is a wall-shaped guide portion that leads to 11.

With the configuration described above, when the sounder 5 is fixed to the main body 2 with the screw 7 via the boss 6, the sound generating surface 5a of the sounder 5 is brought into close contact with the upper end surface of the rib 8 via the rubber packing 9.

As a result, the front air chamber 10 is formed, and when sound is generated from the sound generating surface 5a of the sounder 5 in the direction of arrow A in the figure, the sound reverberates in the front air chamber 10 and the sound pressure level becomes high.

The reverberant sound whose sound pressure level is high leaks out from the slit portion 8a of the rib 8 to the inside of the main body 2, and also on the inner surface of the guide portion 12 formed facing the slit portion 8a. It hits and is guided along this surface toward the sound transmission hole 11 provided below, that is, in the base of the guide portion 12.

As a result, the sound flows out into the main body 2 and also into the sound transmission hole 11 on the bottom surface side of the main body 2, and the sound flows out from the sound transmission hole 11 to the outside.

It should be noted that the present invention is not limited to the above-described embodiment, but various modifications can be made. For example, the number of slits may be plural if the sound from the sounder can be sufficiently reflected, and in this case, the same number of guides as slits are provided.

In addition, a sound transmission hole is provided at the base of the boss that fixes the sounder, the slit is formed at a position facing the boss, and wall-shaped parts are formed like flanges on both sides of the boss to serve as guide parts. Can also be considered.

[Effect of device]

As described above, according to the present invention, the sound rising through the slit formed in the rib formed on the bottom surface of the main body of the telephone is brought into contact with the sound transmitting hole so as to guide the sound to the wall and rise up in a wall shape. The guide portion is provided so as to face the slit portion of the rib with the sound transmission hole interposed therebetween, and is emitted from the sound generating surface of the sounder and is raised to a high sound pressure level in the front air chamber, and then the slit portion of the rib is formed. The sound that has escaped to the outside is guided toward the sound transmission hole below along the guide portion formed facing the slit portion, and is sent to the outside of the main body from this sound transmission hole.

Therefore, according to this, the sound emitted from the sound generation surface of the sounder and increased to the high sound pressure level in the front air chamber can be sent to the outside of the main body as the sound of the desired high sound pressure level without lowering the sound pressure level. In addition to the effect that it can be obtained, the guide portion is structurally only provided so as to face the slit portion of the rib with the sound transmission hole interposed therebetween, and therefore, it is possible to easily manufacture without requiring difficult processing. Is obtained.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a sound transmission hole structure for a sounder showing an embodiment of the present invention, FIG. 2 is a plan view of a sounder mounting portion of the present embodiment, and FIG. 3 is a side cross section of FIG. FIG. 4 is a partially cutaway side view showing a conventional structure, FIG. 5 is a plan view of a conventional sounder mounting portion, and FIG. 6 is a side sectional view of FIG. 1 ... Telephone, 2 ... Main body 3 ... Handset, 5 ... Sounder 5a ... Sound generation surface, 8 ... Rib 8a ... Slit part, 10 ... Front air chamber 11 ... Sound transmission hole, 12 ... … Guide section

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A cylindrical rib is formed on a bottom surface of a main body of a telephone together with a handset, and a sound generation surface of a sounder is closely attached to an upper end of the rib so that the sound is generated in the rib. A front air chamber for reverberating sound from the generation surface, so as to be parallel to the direction from the sound generation surface toward the bottom surface of the front air chamber, with a slit portion provided on a part of the rib peripheral surface, At the base of the slit portion, a sound transmission hole is formed so as to be continuous with the slit portion on the bottom surface side of the main body, and the reverberant sound of the front air chamber is transmitted to the outside of the main body through the slit portion and the sound transmission hole. In a sound transmission hole structure for a sounder of a telephone to send out, a guide part which is raised in a wall shape in contact with the sound transmission hole so as to guide the sound from the slit portion to the sound transmission hole is sandwiched between the sound transmission holes. Facing the slit part of the rib Sounder sound transmission pore structure of the telephone, characterized in that provided by.