JPS6316216Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting structure for an acoustic vibrating body in a seat, which is suitable for attaching an acoustic vibration transmission device to a passenger car, for example, and which eliminates unpleasant sounds.

Recently, acoustic vibration transmission devices have been proposed.
An acoustic vibration transmission device uses a filter to extract the low-pitched sounds that are difficult to transmit to the listener using conventional speakers when listening to music, amplifies this, and converts it into vibration waves using an acoustic vibrator. This device conveys music to the listener's body, allowing the listener to feel the music through their body as well as the normal sound waves perceived by the ears, thereby improving the sense of realism associated with listening to music.

The above-mentioned acoustic vibration transmission device is considered to be in extremely high demand as it matches the tastes of today's young people who love music, and if such a device is applied to vehicles such as passenger cars, it will be possible to listen to music while driving. Delivers even more comfort.

Therefore, in order to provide the acoustic vibration transmission device on the seat of a passenger car or the like, we proposed a method of attaching a vibrating body that first generates vibration waves. According to one of the attachment methods, the vibrating body is attached and fixed to the back surface of the seat portion and the backrest portion of the seat using a seat spring, thereby eliminating the complexity of assembly. However, according to the above mounting method, the seat spring is configured to come into direct contact with the vibrating body, so when the vibrating body vibrates, the seat spring resonates, which causes abnormal noise or squeaks. It had drawbacks.

The present inventor has devised the present invention in view of the above-mentioned problem and to effectively solve the problem.

The purpose of this invention is to prevent the seat spring from producing abnormal noise when the vibrating body vibrates when the vibrating body of an acoustic vibration transmission device is fixed to the seat using a seat spring, etc. An object of the present invention is to provide a mounting structure for an acoustic vibrating body in a seat in which a buffer member is interposed between the body and a seat spring or the like.

A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

First, the electrical configuration of the acoustic vibration transmission device will be outlined. In FIG. 1, an electric signal related to music, etc. is generated for a listener 2 seated on a seat 1 from a conventional acoustic circuit 3 consisting of an amplifier such as a tuner or cassette tape recorder, and a speaker 4 outputs an electric signal. Sound waves are given by performing acoustic conversion. On the other hand, electric signals related to music, etc. are separately taken out and filtered through a low-pass filter 5 to filter the bass (for example, 150Hz).
), this electric signal related to bass is amplified by a special low-frequency power amplifier 6, and the amplified electric signal is used to generate an electric vibration transducer installed in the sheet 1, that is, an acoustic vibration. The bodies 7, 7 are driven, and vibration waves are generated by the vibrating bodies 7, 7, and are transmitted directly to the body of the listener 2 via the cushioned seat 8 and backrest 9 of the seat 1. .

As mentioned above, an acoustic vibration transmission device is a component that extracts the low frequency from an acoustic electrical signal, increases its power, and generates it as a vibration wave.
It consists of a low-pass filter 5, a special power amplifier 6, and a vibrating body 7.

Next, the mounting structure of the vibrating body in the seat 1 will be specifically explained.

FIG. 2 shows the appearance of a seat for one person, such as a passenger car, for example, and for this one seat 1, the vibrating body 7 of the acoustic vibration transmission device is, for example, a seat portion 8 having cushioning properties. , backrest part 9
A total of 4 pieces, 2 pieces each side by side, are arranged on the back side of the . However, this number of attachments can be determined arbitrarily.

FIG. 3 shows an enlarged longitudinal sectional view of the backrest portion 9.
The backrest portion 9 is mainly formed of a cushion member, and the cushion member is supported by a seat frame 10 disposed around the periphery of the backrest portion 9. A plurality of wave-shaped seat springs 11 are disposed in parallel between the left and right seat frames (not shown) of the backrest portion 9, and the seat springs 11 generate elasticity, and the backrest portion 9
is supported. The vibrating body 7, which has a substantially truncated conical shape, is housed in a concave portion 9a of the same shape formed on the back surface of the backrest portion 9 in the shape shown in the figure, and in the housed state, the rear surface is made of a vibration-absorbing material such as a foam material. It is supported and fixed by a seat spring 11 with a buffer member 12 having a function interposed therebetween.

In the above description, it is assumed that the hardness of the buffer member 12 is smaller than the hardness of the vibrating body and the seat components. Further, it is sufficient that it can cover one vibrating body, and the size can be determined arbitrarily.

In addition, an installation method may be adopted in which the vibration of the vibrating body 7 is transmitted to the backrest 9 via the diaphragm, but in this case, when the diaphragm and the seat spring come into contact, there is a gap between them. A buffer member as described above will be provided.

According to the mounting method having the above configuration, since the buffer member 12 is provided between the vibrating body 7 or the diaphragm and the seat spring 11, even if the vibrating body 7 etc. vibrate, the seat spring 11
There is no resonance between the vibrating body 7 and the seat spring 11, and it is possible to prevent the occurrence of hitting sounds between the vibrating body 7 and the seat spring 11.

Next, another embodiment of the mounting structure for the acoustic vibrator according to the present invention will be described.

Conventionally, there are also vibrating body mounting structures as shown in FIGS. 4 and 5, for example. According to this structure, the vibrating body 7 housed in the storage recess formed on the back surface of the backrest part 9 is not directly pressed and supported by the seat springs 11 in the same way as described above.
In order to arrange the vibrating body 7 between two seat springs, a plate member 13 is used to support and fix the vibrating body 7. In this case, the plate member 13 has two
hooks 13a, 13a are formed on the upper side, the hooks 13a, 13a are locked to the upper seat spring 11, and the lower part of the plate member 13 is pressed by the lower seat spring 11, so that the back surface of the backrest portion 9 The vibrating body 7 is fixed.

In the above, when an electric signal is applied to the vibrating body 7 and the vibrating body 7 vibrates, the plate member 13 and the seat springs 11 . . . vibrate through the plate member 13 and generate sound. Therefore, as shown in FIG. 6, a buffer member 14 made of, for example, a foam material (urethane, etc.) is interposed between the vibrating body 7 and the plate member 13, so that vibrations are transmitted from the vibrating body 7 to the plate member 13, etc. It prevents In this way, the plate member 13 is used as a fixing member.
The present invention can also be applied to cases where . In addition, also in the above, the buffer member 14
The hardness of the vibrator, diaphragm, and seat components shall be lower than that of the vibrating body, diaphragm, and seat components.

As is clear from the above explanation, according to the present invention, when the vibrating body provided in the seat vibrates,
It is possible to prevent resonance of a pressing and fixing member such as a seat spring, or the occurrence of hitting sounds between a vibrating body and the like and the pressing and fixing member, thereby preventing the generation of unnecessary noise. In addition, since the generation of unnecessary noise is prevented, the vibration of the vibrating body can be transmitted to the human body without causing distortion, and the assembling of the vibrating body to the seat can be simplified by reducing the number of man-hours. can.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is an electrical configuration diagram of an acoustic vibration transmission device, Fig. 2 is a perspective view of a seat provided with a vibrating body, and Fig. 3 is a longitudinal section of the backrest. 4 is a rear perspective view of the backrest portion, FIG. 5 is a partial vertical sectional view of the seat backrest portion showing another conventional vibrating body fixing method, and FIG. 6 is a rear perspective view of the seat back portion, and FIG. FIG. In the drawings, 1 is a seat, 7 is a vibrating body, 8 is a seat portion, 9 is a backrest portion, 9a is a recessed portion, 11 is a seat spring, 12 and 14 are buffer members, and 13 is a plate member.

Claims (1)

[Scope of utility model registration request] In a seat having a seat and a backrest made of cushion material, a vibrating body storage section is formed on the back surface of the seat and backrest, and the vibrating body is stored in this, and the vibrating body is used for vibration absorption. A mounting structure for an acoustic vibrator in a seat, characterized in that it is fixed with a pressure fixing member via a buffer member.