JPH0213238Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field to which the invention pertains) The present invention relates to an acoustic vibrating body mounting device for mounting a vibrating body unit so that generated acoustic vibrations are transmitted to a vehicle seat. This invention relates to an apparatus for attaching an acoustic vibrator to a vehicle seat in which a body panel is provided on the back side of the seat bag.

(Background of the invention and problems with the prior art) When listening to music etc. using an audio device, etc.
In addition to the sound waves transmitted through the ears, if sound vibrations in the deep bass range are applied directly to the body, the sense of realism will be significantly enhanced, allowing the enjoyment of powerful music. In this way, in order to transmit acoustic vibrations to the body, an acoustic vibrator is attached to the seat on which the listener is seated, and a low-frequency signal of the acoustic signal that makes the sound device such as a speaker vibrate. The acoustic vibrator may be driven to generate vibrations. Therefore, it is becoming common to see vehicles such as passenger cars having acoustic vibrators attached to their seats.

By the way, when such an acoustic vibrating body is attached to a vehicle seat, the vibrating body must be in close contact with the cushion material so that the vibration waves generated by the vibrating body can be transmitted to the occupant through the cushion material of the seat. We must ensure that
Therefore, conventionally, such an acoustic vibrator was attached inside the seat. However, in order to do so, it is not only necessary to change the structure of the seat frame, etc., but also requires time and effort to attach and detach the vibrating body. In addition, in order to widely transmit the generated vibration waves, the vibrating body is made into a unit with a relatively large volume, so by providing such a vibrating body unit inside the seat, it is possible to I had a problem with it being uncomfortable to sit on.

In particular, for seats where the back of the seat back is in close contact with the body panel, such as the rear seat of a passenger car, if such a vibrating body unit is installed inside the seat bag, the part where the vibrating body unit is installed and the seat This results in a difference in cushioning properties from the parts that are not covered, resulting in a significant loss of comfort.

(Purpose of the invention) The present invention was devised in view of the above problems, and its main purpose is to reduce vibrations that apply acoustic vibrations to the seat back in a seat where a body panel is provided on the back side of the seat back. To enable a body unit to be easily attached and detached, and to have the vibrating body unit hardly affected on sitting comfort even when the vibrating body unit is attached.

Another purpose of the present invention is to make it possible to install such a vibrating body unit in existing vehicle bodies that are not equipped with such acoustic vibration equipment by simply making simple modifications. That's true.

(Characteristics of the invention) In order to achieve this purpose, the invention provides an opening at a position facing the back of the seat back of the body panel, and an elastic member such as a coil spring that is stretched between the opening and the periphery of the opening. This allows the vibrating body unit to be supported in a floating state at the opening. Before the seat back is assembled, the front surface of the vibrating body unit protrudes forward from the general surface of the body panel, and when the seat back is assembled, it is pressed against the back surface by the elastic force of the elastic member. It is made possible to do so.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

Fig. 1 shows an embodiment in which the acoustic vibrating body mounting device according to the present invention is applied to the rear seat of a passenger car. FIG. 3 is a longitudinal side view showing an assembled state.

As is clear from these figures, the seat back 1 of the rear seat is supported with its back surface 1a in close contact with the body panel 2. Behind this body panel 2 is the trunk compartment 3.
It is said that The body panel 2 has a shallow recess 2 facing rearward at a position facing the seat back 1.
a is provided, and an opening 4 is formed at the bottom of the recess 2a. This opening 4 may be a long opening continuous in the width direction of the body panel 2, but it may be a rectangular or circular opening having a predetermined width.
It is desirable that a plurality of them be arranged side by side in the width direction of the body panel 2.

A vibrating body unit 6 is supported in a floating state in the center of the opening 4 by a plurality of coil springs 5, 5, which are held and tensioned at the upper edge 4a and lower edge 4b, respectively. It is becoming more and more common. This vibrating body unit 6 consists of an acoustic vibrating body 6 ₁ that generates vibration waves and a vibration transmission plate 6 ₂ that is vibrated by the vibration waves, and has a considerable thickness. As shown in Figure A, when the seat back 1 is not assembled, the front surface of the vibrating body unit 6, that is, the contact surface 6a facing the vibration transmission plate ₆₂ and the seat back 1 is located forward of the general surface S of the body panel 2. It's starting to stand out. Therefore, when the seat bag 1 is assembled to the body panel 2, the vibrating body unit 6 is pressed rearward by the seat bag 1, as shown in FIG. 1B, and the coil spring 5
is beginning to be extended.

When the coil spring 5 is expanded in this manner, the vibrating body unit 6 is pressed against the back surface 1a of the seat bag 1 by its elastic force. As a result, the contact surface 6a of the vibration transmission plate ₆₂ comes into close contact with the back surface 1a of the seat bag 1, and the vibration of the vibration transmission plate ₆₂ is reliably transmitted to the seat bag 1.

This vibration transmission plate 6 ₂ vibrates an acoustic vibrator 6 ₁
is driven by a signal that extracts only the low-frequency range signal through a low-pass filter from the audio signal generated by an audio signal source such as a tuner or cassette tape deck, and amplifies that signal. ing. On the other hand, the speaker is operated by the acoustic signal generated from the acoustic signal generating source in the same way as in a normal audio device. Therefore, when you sit on the seat, you will perceive the sound waves generated from the speakers through your ears, and at the same time you will experience vibrations synchronized with the sound waves through the seat back 1, allowing you to enjoy music etc. with a sense of realism. You will be able to do this.

Then, by attaching the vibrating body unit 6 to the body panel 2 and pressing it against the back surface 1a of the seat bag 1 by the elastic force of the coil spring 5, the vibrating body unit 6 can be attached to the seat bag 1. Since there is no need to change the structure of the frame etc., the standard specification seat can be used as is. Further, the vibrating body unit 6 can be easily attached or detached by simply attaching it to or detaching it from the body panel 2. Furthermore, since this work can be performed from the trunk compartment 3 side, there is no need to remove the seat back 1.

Furthermore, this vibrating body unit 6 is installed using the space behind the body panel 2. Therefore, since there is no need to occupy the internal space of seat bag 1, the seat bag 1
The thickness of the cushion material can also be set to provide optimum sitting comfort. Furthermore, since the vibrating body unit 6 is elastically supported by the spring 5, the cushioning properties of the seat bag 1 are not impaired.

Vibration transmission plate 6 ₂ of such vibrating body unit 6
is for widely transmitting vibration waves generated by the vibrating body ₆₁ to the surface of the seat back 1, and is often made of a relatively hard material such as a high-density cushion material. For this reason, a relatively thin vibration transmission plate 6 ₂ is sometimes used. In such a case, attach another cushion material, etc. to the front of the vibration transmission plate ₆₂ , and
What is necessary is just to make it the required thickness.

FIG. 2 shows such an embodiment.
In this embodiment, since the thickness of the vibration transmission plate 6 ₂ is small, even when the coil spring 5 is kept in its natural state, the front surface of the vibration transmission plate 6 ₂ is rearward from the general surface S of the body panel 2. It is located in Therefore, a pressing cushion plate 7 of an appropriate thickness is attached to the front surface of the vibration transmission plate ₆₂ by adhesive or the like, and the front surface of the pressing cushion plate 7 protrudes forward from the general surface S of the body panel 2. It is made to be. By doing this,
When the seat bag 1 is assembled to the body panel 2, the vibrating body unit 6 is pressed rearward by the back surface 1a of the seat bag 1 via the cushion plate 7. This causes the coil spring 5 to expand, and its elastic force brings the cushion plate 7 into close contact with the back surface 1a of the seat bag 1. In this way, the vibration of the vibrating body 6 ₁ is transmitted to the seat back 1 through the vibration transmission plate 6 ₂ and the cushion plate 7. At this time, the cushion plate 7 is compressed by pressure from the front and rear surfaces, so even if it is made of a soft cushion material, it can sufficiently transmit vibrations.

In the above embodiments, the coil spring 5 is used as the elastic member to support the vibrating body unit 6.
It is sufficient that the seat back 1 is supported in such a way that an elastic force is applied to resist it when it is pressed rearward. An appropriate elastic member such as rubber can be used. When such a band-shaped elastic member is used, the upper and lower ends of the elastic member are fixed to the upper and lower edges 4a and 4b of the opening 4 by appropriate means such as welding or gluing, and the vibrating body unit 6 is fixed. What is necessary is just to fix a back surface part to the intermediate part of the elastic member. In that case, the recess 2a does not necessarily need to be provided in the body panel 2, and the opening 4 can be provided directly on the general surface S of the body panel 2. Further, such elastic members can be provided not only in the vertical direction but also in the left and right directions.

Furthermore, it is clear that the present invention can be applied not only to the rear seats of passenger cars, but also to any seats, such as sports car seats, as long as a body panel is provided on the back side of the seat back. Probably.

(Effects of the invention) As is clear from the above explanation, according to the invention, an opening is provided in the body panel located on the back side of the seat bag, and an elastic member stretched between the opening and the peripheral edge of the opening is provided. Therefore, since the vibrating body unit is attached, there is no need to change the structure of the seat frame etc. in order to attach the vibrating body unit, and the same seat as the conventional one can be used, and the vibrating body unit is Attachment and detachment can also be done with extremely simple operations. In addition, the elastic member allows the vibrating body unit to be elastically pressed against the seat back so that it comes into close contact with the seat back, so that the vibrations generated from the vibrating body unit are reliably transmitted to the seat back. , it is possible to almost eliminate the loss of sitting comfort caused by the vibrating body unit. Furthermore, since processing on the car body side only requires creating an opening in the body panel, the vibrating unit can be attached to the existing car body with simple processing, making it easy to enjoy highly immersive music etc. It is possible to modify the vehicle into a vehicle that can.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of the acoustic vibrating body mounting device according to the present invention, in which A is a longitudinal side view showing the state before the seat bag is assembled, and B is a longitudinal side view showing the state with the seat bag assembled. FIG. 2 is a longitudinal sectional side view showing another embodiment of the present invention before the seat bag is assembled. 1... Seat back, 1a... Back, 2... Body panel, 4... Opening, 4a... Upper edge, 4b
... lower edge, 5 ... coil spring (elastic member), 6 ... vibrator unit, 6 ₁ ... acoustic vibrator, 6 ₂ ... vibration transmission plate, S ... body panel general surface.

Claims (1)

[Scope of claim for utility model registration] Body panel 2 on the back side 1a of the seat back 1
In a vehicle seat provided with; the seat back back surface 1 of the body panel 2;
An opening 4 is provided at a position opposite to a, and a vibrating unit 6 that applies acoustic vibration to the seat bag 1 is located in the opening 4, and the vibrating unit 6 is connected to the peripheral edges 4a, 4b of the opening 4. An acoustic vibrating body mounting device for a vehicle seat, characterized in that the acoustic vibrating body mounting device for a vehicle seat is supported by being elastically pressed against the back surface la of the seat bag 1 by an elastic member 5 stretched between the seat bag and the seat bag.