JPS6340942Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a sensory acoustic vibration device.

The sensory acoustic vibration device aims to enhance the sense of reality by not only achieving the effect of an acoustic device using air propagation, but also by converting, for example, a low-frequency electric signal into mechanical vibration and allowing the user to experience it. Various specific configurations of the sensory acoustic vibration device have been proposed, but basically they include an acoustic vibration unit that generates mechanical vibrations in response to a low-frequency electric signal, and a vibrating device placed over the acoustic vibration unit. It has a body and is applied to, for example, sofas, beds, and car seats.

A conventional example of such a sensory acoustic vibration device is a chair-type device shown in FIG.

In FIG. 1, a frame member 2 extends along the lower main surface of a cushion member 1 as a vibrated body. The frame member 2 is generally rectangular in shape and carries the cushion member 1. Furthermore, legs (not shown) are protruded from, for example, the four corners of the frame member 2, and the entire chair including the frame member 2 is supported by the legs. An acoustic vibration unit 3 is arranged below the cushion member 1, and is connected to an annular frame member 5 via a plate-shaped vibration transmission member 4.
The frame member 5 is in contact with the lower main surface of the cushion member 1 at its upper surface. Further, a pair of membrane members 6a and 6b are stretched in a sash-like manner on the above-mentioned contact surface of the frame member 5 with the cushion member 1 and the back surface thereof. The frame member 5 is arranged approximately at the center of the main surface of the frame member 2, and together with the acoustic vibration unit 3, the vibration transmission member 4, and the membrane members 6a and 6b, a plurality of belt members are made of rubber or the like and serve as tension means. 7 between the frame members 2. These belt members 7 stretch the acoustic vibration unit 3, frame member 5, etc. between the frame members 2, and also support the load applied via the cushion member 1 when the person is seated. For this reason, the belt member 7 has sufficient strength to withstand impact loads when the user is seated, and is stretched with a predetermined tension.

In the body-sensing acoustic vibration device, in order to efficiently transmit the vibrations emitted from the body-sensing acoustic vibration device to the viewer's body, vibrations can be caused to leak through the frame member 2 to the floor or the like on which the body-sensing acoustic vibration device is installed. It is essential to reduce the amount. It is known that the rate of vibration leakage to the floor etc. is directly proportional to the rigidity of the frame member 2 as well as the hardness of the tensioning means such as the belt member 7 for tensioning the acoustic vibration unit 3. In the conventional sensory acoustic vibration device, the strength and tension of the belt member 7, that is, the apparent hardness, are set to be large so that the belt member 7 can withstand impact loads and the like when seated. Therefore, there was an inconvenience that the vibrations emitted from the acoustic vibration unit 3 leaked to the floor or the like.

The present invention has been made in view of the above-mentioned points, and its purpose is to provide a body-sensing acoustic vibration device that has sufficient strength for practical use and can improve the body-sensible vibration characteristics.

The sensory acoustic vibration device according to the present invention includes a cushion member, a frame member extending along the lower main surface of the cushion member, and a frame member disposed below the cushion member to generate mechanical vibrations in response to a low-frequency electric signal. an acoustic vibration unit, an annular frame member coupled to the acoustic vibration unit via a vibration transmission member and in contact with the cushion member, and a ring-shaped frame member stretched in a tassel shape on the contact surface of the frame member with the cushion member and the back surface thereof. the acoustic vibration unit, the vibration transmitting member, the frame member, and the membrane member between the frame members; The first and second parts are stretched across each other.
The first elastic support member is inserted between the contact surface of the frame member and the membrane member stretched over the contact surface, and the second elastic support member is made of an elastic support member. The acoustic vibration unit, the vibration transmission member, the frame member, and the membrane member are stretched by being inserted between the back surface of the frame member and the membrane member stretched on the rear surface. do.

Hereinafter, a sensory acoustic vibration device according to an embodiment of the present invention will be described with reference to FIGS. 2 and 3. The sensory acoustic vibration device was manufactured as a chair for use at home.

As shown in the figure, a frame member 1 is placed along the lower main surface of a flat cushion member 10 as a vibrated body made of cotton felt or urethane foam.
1 is extending. The frame member 11 is made of a steel pipe or the like, has a generally rectangular shape, and supports the cushion member 10. Although not shown, legs are provided downwardly protruding from, for example, the four corners of the frame member 11, and the whole body-sensing acoustic vibration device including the frame member 11 is supported by the legs. There is. An acoustic vibration unit 12 is arranged below the cushion member 10. The acoustic vibration unit 12 generates mechanical vibration by, for example, using a voice coil as a fixed side and reciprocating a magnetic circuit section serving as a driver unit in response to a low-frequency electric signal. will not be detailed here. The acoustic vibration unit 12 is connected to an annular frame member 14 via a vibration transmission member 13 made of a steel plate or the like.
The frame member 14 is formed by bending a steel pipe into a rectangular shape, for example, and its upper surface is in contact with the lower main surface of the cushion member 10. A pair of membrane members 15a and 15b made of cloth, rubber, or the like are stretched in a sash-like manner on the surface of the frame member 14 that contacts the cushion member 10 and on the back surface thereof. Note that the film-like members are not limited to separate members such as 15a and 15b, but may be a single member in which these members are integrally connected to each other.

A pair of belt-shaped first and second elastic support members 16a and 16b made of rubber or the like are stretched between mutually opposing portions of the frame member 11 so as to cross each other. These first and second elastic supporting members constitute a tensioning means for stretching the acoustic vibration unit 12, the vibration transmission member 13, the frame member 14, and the membrane members 15a, 15b between the frame members 11. A mounting bracket 17a and a mounting pin 17b are fixed to both ends of each elastic support member 16a and 16b.
7b is inserted into the hole 11a formed in the frame member 11, thereby attaching it to the frame member.

The first elastic support member 16a is inserted between the contact surface of the frame member 14 with the cushion member 10 and the membrane member 15b stretched over the contact surface,
It is designed to mainly bear the load when sitting. Therefore, the first elastic support member 16a is stretched with sufficient strength and tension to withstand the impact load and the like during seating. In addition, the second elastic support member 1
6b is inserted between the back surface of the frame member 14 (the back surface of the contact surface) and the membrane member 15a stretched over the back surface, and mainly connects the acoustic vibration unit 12, the vibration transmission member 13, and the frame member. 14 and membrane member 15a, 1
5b. Therefore, the tensile strength and tension, that is, the apparent hardness, of the second elastic support member 16b are set to be considerably smaller than those of the first elastic support member 16a, and it has a sufficient damping effect against vibration. . Therefore, the second
Vibrations leaking to the floor or the like through the elastic support member 16b and the frame member 11 are either completely absent or extremely weak. Further, by appropriately determining the tensile strength and tension of the second elastic support member 16b, it is possible to vary the sensory acoustic vibration device.

The frame member 14 and the membrane members 15a and 15b are connected to the first and second elastic supporting members 16a and 16, respectively.
The frame member 11 is slidable relative to b.
The acoustic vibration unit 12, the vibration transmission member 13, the frame member 14, and the membrane member 15 are stretched between them.
a, 15b can be moved and positioned at desired positions between the frame members.

In addition, the first and second elastic supporting members 16a and 1
Since the tensile strength and tension of the chair 6b can be set to predetermined values, the cushion performance and sensory vibration characteristics of the chair or the like can be adjusted separately.

FIG. 4 shows a modification of the elastic support member.

While the above-mentioned elastic support members 16a and 16b use belt-shaped rubber or the like, this elastic support member has a coil spring 19. The coil spring has an annular shape as a whole, and mounting fittings 20 are fixed to both ends of the coil spring.
a and the frame member 11 via the mounting pin 20b.
It is stretched between the mutually opposing parts of the.

FIG. 5 shows another modification of the elastic support member.

The elastic support member consists of an S-shaped spring 21, which is tensioned between the frame members 11 by hooking its ends onto attachment portions 11b fixed to the frame members 11.

As detailed above, in the sensory acoustic vibration device according to the present invention, a canvas is wrapped around an annular frame and an acoustic vibration unit is coupled to the annular frame to form a vibrating body, and this vibrating body is connected to a belt-like member that crosses each other. Because of the structure in which the cushion is stretched by a cushion, the uniformly distributed vibrations in the cushion are not attenuated and natural vibrations can be felt, which is preferable.

[Brief explanation of the drawing]

Figure 1 is a diagram showing a conventional example of a sensory acoustic vibration device.
FIGS. 2 and 3 are perspective views and side sectional views of essential parts of the sensory acoustic vibration device according to the present invention, and FIGS. 4 and 5 are views showing modified examples of the elastic supporting member. Explanation of symbols of main parts, 10... Cushion member, 11... Frame member, 12... Acoustic vibration unit, 13... Vibration transmission member, 14... Annular frame member, 1
5a, 15b...membrane member, 16a...first elastic support member, 16b...second elastic support member.

Claims (1)

[Claims for Utility Model Registration] (1) A cushion member, a frame member extending along the lower main surface of the cushion member, and a frame member disposed below the cushion member that generates mechanical vibration in response to a low-frequency electric signal. an annular frame member that is coupled to the acoustic vibration unit via a vibration transmission member and comes into contact with the cushion member; and a sash-like structure on the contact surface of the frame member with the cushion member and on the back surface thereof. the acoustic vibration unit, the vibration transmission member, the frame member, and the membrane member between the frame members; It consists of first and second elastic support members stretched across opposite parts, and the first elastic support member is connected to the contact surface of the frame member and the membrane stretched to the corresponding contact surface. The second elastic support member is inserted between the back surface of the frame member and the membrane member stretched over the back surface to transmit the acoustic vibration unit and vibration. A body-sensing acoustic vibration device characterized in that a member, a frame member, and a membrane member are stretched. (2) The sensory acoustic vibration device according to claim 1, wherein the first elastic support member and the second elastic support member have different hardnesses.