JP2018078410A - Speaker device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker device capable of efficiently conveying vibration generated from a vibration device to diaphragm and producing clear sound of a wide range, the volume of which is secured.SOLUTION: In a speaker device according to the present invention in which a vibration device is in contact with a flat surface side of a diaphragm made of a hard plate material and sound is emitted from the diaphragm, a frame body is provided on the diaphragm so as to surround the vibration device, and an elastic body is provided so as to cover the frame body and the vibration device and face the diaphragm to achieve the above-described object.SELECTED DRAWING: Figure 1

Description

The present invention relates to a speaker device.

Conventionally, various types of speaker devices have been proposed. For example, Patent Document 1 describes a speaker device. This speaker device is provided with an amplifying means provided so as to cover the driving member at the other end of a cylindrical driving member having one end provided on a cap made of an elastic material for protecting the voice coil of the actuator, and the amplifying means. The end part of the voice coil and the end part of the drive member are arranged to face each other with a cap interposed therebetween.

However, since the speaker device disclosed in Patent Document 1 is connected to the radiation plate and generates vibration, no measures are taken to prevent movement other than the operation direction of the drive shaft connected to the radiation plate. When trying to obtain a sound volume, there is a problem that movement other than the operation direction of the drive shaft occurs and the sound transmission efficiency tends to decrease.

JP2015-156605A

It is an object of the present invention to provide a speaker device that can efficiently transmit vibration generated from a vibration device to a diaphragm, can secure a sound volume, and can produce a clear sound in a wide sound range. is there.

The speaker device according to the present invention is a speaker device in which a vibration device is brought into contact with a flat surface side of a vibration plate made of a hard plate material and is emitted as sound from the vibration plate, and the vibration plate surrounds the vibration device. The frame body and the vibration device are provided with elastic bodies so as to face the vibration plate with the frame body and the vibration device interposed therebetween.

In the present invention, the elastic body is formed by connecting the vibration device and the frame body by bonding, and the vibration plate, the frame body, the vibration device, and the elastic body are integrated. preferable.

In the present invention, when the vibration device is operated, the elastic body generates an operation following the operation in the drive shaft direction of the vibration device, and the vibration in the juxtaposition direction of the vibration device and the frame body is generated. It is preferable that an urging force applied to the vibration device is generated while preventing movement of the device.

In the present invention, it is preferable that the speaker device is in contact with a second diaphragm larger than the diaphragm.

In the present invention, it is preferable that the speaker device is in contact with a wall, a ceiling, a floor, or furniture.

The speaker device according to the present invention is a speaker device in which a vibration device is brought into contact with a flat surface side of a vibration plate made of a hard plate material and is emitted as sound from the vibration plate, and the vibration plate surrounds the vibration device. A frame body is provided, and an elastic body is provided on the frame body and the vibration device so as to oppose the vibration plate with the frame body and the vibration device interposed therebetween. The sound can be transmitted to the diaphragm well, the sound volume is secured, and a clear sound with a wide sound range can be produced.
According to another aspect of the present invention, the elastic body connects the vibration device and the frame body by bonding, and the vibration plate, the frame body, the vibration device, and the elastic body are integrated. The thing has the effect that the vibration which generate | occur | produced from the vibration generator can be efficiently transmitted to a diaphragm, a sound volume is ensured and a clear sound of a wide sound range can be emitted.
According to a third aspect of the present invention, when the vibration device is operated, the elastic body follows an operation in the drive shaft direction of the vibration device, so that the vibration device and the frame body are arranged side by side. Those that block the movement of the vibration device and generate an urging force added to the vibration device can efficiently transmit the vibration generated from the vibration generation device to the diaphragm, ensuring a large volume and a wide sound range. The effect is that you can produce a clear sound.
Further, according to the fourth aspect of the present invention, when the speaker device is in contact with a second diaphragm larger than the diaphragm, the sound volume is ensured and a clear sound with a wide sound range can be produced. is there.
Further, according to the fifth aspect of the present invention, when the speaker device is brought into contact with a wall, ceiling, floor, or furniture, the sound volume is ensured and a clear sound with a wide sound range can be produced.

It is a perspective view of the speaker apparatus which shows an example of embodiment of this invention. These are top views of a speaker apparatus same as the above. These are sectional drawings of a speaker apparatus same as the above. These are top views which show 2nd Example of a speaker apparatus same as the above. These are sectional drawings which show 2nd Example of a speaker apparatus same as the above. These are top views which show 3rd Example of a speaker apparatus same as the above. These are sectional drawings which show 3rd Example of a speaker apparatus same as the above.

  Hereinafter, modes for carrying out the present invention will be described.

  1 to 3 are examples of the speaker device according to the first embodiment. The speaker device 1 is arranged so as to surround the vibration device 3, the vibration device 3, a drive shaft 31 that transmits vibration generated by the vibration device 3 in contact with the vibration plate 2, and the vibration device 3. A frame 4 and an elastic body 5 provided to face the diaphragm 2 with the vibration device 3 interposed therebetween are provided, and the drive shaft 31 is integrally included in the vibration device 3. Although one vibration device 3 is provided on the diaphragm 2, it is also possible to provide one or more vibration devices 3.

The drive shaft 31 provided in the vicinity of the vibration center axis of the vibration device 3 is brought into contact with the diaphragm 2 as shown in FIGS. 1 to 3, and the vibration generated in the vibration device 3 is Designed to concentrate on the portion of the drive shaft 31 in contact with the diaphragm 2 in the Z direction, the vibration device 3 can efficiently transmit even the weak vibration to the diaphragm 2. It is provided as follows. The diaphragm 2 includes a frame 4 disposed so as to surround the vibration device 3, and the vibration device 3 in contact with the vibration plate 2 of the vibration device 3. The surface opposite to this side is provided to be connected to the frame body 4 via the elastic body 5, and the elastic body 5 operates following the operation of the drive shaft 31. The diaphragm 2, the frame body 4, the vibration device 3, and the elastic body 5 are integrated. In this case, the vibration generated from the vibration device 3 can be continuously and efficiently transmitted to the diaphragm, the sound volume is ensured, and a clear sound with a wide sound range can be produced.

However, if the diaphragm 2, the frame 4, the vibration device 3, and the elastic body 5 are not integrated, the vibration device 3 contacts the vibration plate 2 when the vibration device 3 operates. There is a concern that an operation like a pendulum will occur using the contacted portion of the drive shaft 31 as a fulcrum, and the operation of the drive shaft 31 on the drive shaft in the Z direction will be disturbed. The vibration cannot be continuously and efficiently transmitted to the diaphragm.

The drive shaft 31 of the vibration device 3 can obtain the same effect by providing the elastic body 5 regardless of whether the portion in contact with the vibration plate 2 is fixed or in a stationary state. .

As shown in FIGS. 1 to 3, the elastic body 5 includes the frame 4 provided on the diaphragm 2, the gap 32 disposed substantially uniformly on the outer periphery of the vibration device 3, and the vibration. Covering the vibration plate 2 and the vibration device 3 across the vibration device 3 so as to cover the device 3, the vibration device 3 and the frame 4 are provided over the entire surface in the X direction and the Y direction. The frame body 4 and the vibration device 3 are connected to each other by the entire surface adhesion with a uniform adhesive force in a state where there is no bending. In the case where the elastic body 5 is provided in this way, in the state where the vibration device 3 is not operated, the stress acting as an urging force does not work in any of the X direction, the Y direction, and the Z direction of the elastic body 5. The vibration device 3 is stable, and when the vibration device 3 is operated, an operation is applied to the elastic body 5 in the X direction, the Y direction, and the Z direction, and internal stress is generated. In the operation, an operation that causes tension and deflection is simultaneously applied to the gap 32, so that the internal stress generated in the elastic body 5 is relieved in the gap 32, and the vibration device 3 and the frame body 4 are moved. The movement of the vibration device 3 in the juxtaposed direction (X direction and Y direction) is prevented and stabilized, and the vibration generated by the vibration device 3 moves in the Z direction (FIGS. 1 to 3) of the drive shaft 31. Since the elastic body 5 follows and operates, internal stress is generated. Since the elastic body 5 is connected to the frame body 4 and the vibration device 3 by full adhesion with a uniform adhesive force, a repulsive force against an internal stress is generated in the elastic body 5, and this repulsive force Becomes an urging force to the vibration device 3

In addition, the elastic body 5 undergoes an operation that follows the Z-direction operation of the drive shaft 31 of the vibration device 3 when the vibration device 3 is operated. The generated portion acts as a biasing force applied to the vibration device 3 by the repulsive force of the internal stress in the Z direction (FIGS. 1 to 3), so that the portion of the vibration device 3 that contacts the diaphragm 2 does not float, The vibration generated in the vibration device 3 can be continuously transmitted to the vibration plate 2, and the vibration generated in the vibration device 3 can be efficiently transmitted to the vibration plate 2 and the sound volume is ensured. And has the effect of producing a clear sound with a wide range.

The elastic body 5 is preferably formed into a sheet shape using foamable rubber. For example, the elastic body 5 has a thickness of about 1 to 10 millimeters, and preferably a foamability adjusted to a thickness of 3 millimeters. What was processed into the shape according to the external shape of the said frame 4 using the material which formed the natural rubber in the sheet form is good. It is also possible to use a material having a similar function.

The frame 4 is preferably made of a material used for the diaphragm 2. For example, as shown in FIG. 3, the dimension in the Z direction is such that the vibration device 3 is connected to the diaphragm 2. The surface opposite to the surface on which the drive shaft 31 of the vibration device 3 provided when the device is allowed to stand is parallel to the vibration plate 2 and parallel to the surface of the frame 4 on the vibration plate 2 side. When the elastic body 5 is provided so as to be in the same plane as the surface, the dimension is such that internal stress is not applied in the Z direction of the elastic body 5, and the planar shape is the plane dimension of the vibration device 3. It is preferable to form a square with one side having a dimension that is approximately twice as large as one side.

As the diaphragm 2, a flat plate made of a hard plate material that smoothly transmits vibrations and radiates as sound is used. Examples of the flat plate of the hard plate material include wood, woody material, bamboo, gypsum board, metal, glass, and hard plastic. Among these, the diaphragm 2 is preferable even when wood such as building materials to be discarded such as buildings is used.

The diaphragm 2 is made of hard plate wood. The hard plate wood is a sufficiently dried wood that has reached an equilibrium state with a certain moisture content according to the temperature and humidity of the atmosphere, and the cells of the wood contract by sufficient drying. In addition, in the case of wood that is discarded as a building, the wood is sufficiently dried to become old wood during the period it was used as a building, and the shrinkage of the wood is promoted by natural drying over time, and it is further exposed to air and ultraviolet rays. As a result, the wood is oxidized and the old wood becomes hard wood. The diaphragm 2 formed using such wood is a point sound source at the contact point of the contact portion of the driving shaft 31 of the vibration device 3, and concentrates the vibration generated in the vibration device 3. Therefore, strong vibration is received and vibration can be smoothly transmitted to the entire diaphragm 2. Moreover, it is preferable that the diaphragm 2 is formed in a grid using a conifer having an air-dry specific gravity of about 0.3 to 0.65. In this case, the vibration is transmitted by the fiber of the annual ring, and is amplified and radiated as sound throughout the diaphragm 2, so that a high sound is likely to be emitted from a hard part of winter with a small amount of growth, and a summer with a large amount of growth. The soft part tends to produce low sounds, and vibrations that mix high and low sounds are likely to occur. Moreover, the said diaphragm 2 of such a wood has moderate viscosity, and the coefficient of restitution of a surface is lower than the thing made from a metal or a hard plastic. For this reason, even when the diaphragm 2 is vibrated by either an excitation by an instantaneous external force or a continuous excitation, the emitted sound can be obtained as a “soft sound” with a low frequency component. It is also possible to use the vibration device 1 as an amplifying device and use it as a speaker device by bringing it into contact with a further large diaphragm, or contacting a wall, ceiling, floor or furniture.

4 to 5 are views showing a second embodiment, in which the vibration device 3 is placed on the diaphragm 2 by increasing the area where the end of the drive shaft 31 abuts against the diaphragm 2. This is an example, and the details are the same as in the embodiment.

FIGS. 6 to 7 are views showing a third embodiment, in which the vibration device 3 is fixed to the diaphragm 2 by increasing the area where the end of the drive shaft 31 abuts the diaphragm 2. The frame 4 has a surface opposite to the surface on which the drive shaft 31 of the vibration device 3 provided when the vibration device 3 is placed on the vibration plate 2 is parallel to the vibration plate 2. This is an example in which an auxiliary member 41 is provided so that the dimensions can be easily adjusted so that the frame 4 is flush with the plane parallel to the plane on the diaphragm 2 side, and the details are the same as those in the embodiment. It is.

The present invention has been described above based on the embodiments shown in the accompanying drawings. However, the present invention is not limited to the embodiments of the above-described examples, and appropriate design changes can be made within the intended scope of the present invention. Can be done.

DESCRIPTION OF SYMBOLS 1 Speaker apparatus 2 Diaphragm 3 Vibration apparatus 4 Frame body 5 Elastic body 31 Drive shaft
32 Clearance

Claims (5)

A speaker device that abuts on a flat surface of a diaphragm made of a hard plate and radiates as sound from the diaphragm, the diaphragm is provided with a frame so as to surround the vibrator, A speaker device, wherein an elastic body is provided on the frame and the vibration device so as to face the vibration plate with the frame and the vibration device interposed therebetween. The elastic body connects the vibration device and the frame body by bonding, and the vibration plate, the frame body, the vibration device, and the elastic body are integrated. The speaker device described. When the vibration device is operated, the elastic body follows an operation in the drive shaft direction of the vibration device, and prevents the vibration device from moving in the direction in which the vibration device and the frame are arranged side by side. The speaker device according to any one of claims 1 to 2, wherein an urging force applied to the vibration device is generated. The speaker device according to any one of claims 1 to 3, wherein the speaker device is brought into contact with a second diaphragm larger than the diaphragm. 5. The speaker device according to claim 1, wherein the speaker device is brought into contact with a wall, a ceiling, a floor, or furniture.

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