WO2005086523A1

WO2005086523A1 - Speaker apparatus

Info

Publication number: WO2005086523A1
Application number: PCT/JP2005/000668
Authority: WO
Inventors: Takano Kimpara; Junske Akiyama
Original assignee: Kimpara & Co., Ltd.
Priority date: 2004-03-05
Filing date: 2005-01-20
Publication date: 2005-09-15

Abstract

A spherical speaker apparatus having a speaker box formed in a spherical shape, capable of reproducing smooth reproduced sound and ample low tone, and enabling the adjustment of an installation angle to suit, for example, for mounting on a vehicle. The speaker device in which the inner wall surface side of the speaker box is formed in a spherical shape comprises a through hole formed in the wall surface of the speaker box opposed to the center of the speaker unit to communicate with the outside of the speaker box for relieving, to the outside, strong sound pressure generated in the speaker unit when the speaker unit is operated. The speaker device is characterized in that a sounding tube is passed through the through hole on the speaker box inner wall surface side. Also, the speaker device is characterized in that an opening hole may be formed in place of the through hole.

Description

Specification

Speaker device

Technical field

The present invention relates to a speaker device.

Background art

[0002] In general, most speaker devices in the form of square boxes are distributed. The lowest sound frequency that can be played back by the square box-shaped box is the sound frequency (s = 340 m) divided by the total length of the four sides of the speaker box. The lower the sound frequency, the lower the sound becomes, and the lower the pitch becomes, the harder it becomes to reproduce. For this reason, in a practical small rectangular box-shaped speaker box, the speaker unit to be used is devised, and various ideas are devised based on an aerodynamic idea to try to reproduce even a low frequency. However, it is true that bass sounds are being reproduced. There are many artifacts that are artificial and bass sounds are too conscious. In addition, unnecessary sound radiation is generated from each corner of the speaker box, and the sound is turbid, and the sound strays to the front plate (baffle board) to which the speaker unit is fixed. Although the sound quality has been improved a little by applying some power, it is not perfect.

In view of the above, in order to reproduce smooth bass without habits using a rectangular box-shaped speaker box, the speaker box must be large.

[0003] By the way, it is generally known that a spherical speaker box has the highest frequency characteristic, which is the most important factor when playing back music in acoustic engineering, if the internal volumes of the speaker boxes are almost equal. . However, the reason that almost no excellent spherical loudspeaker devices have hitherto appeared on the market is that there was no calculation formula for determining the size of the sphere box corresponding to the desired frequency. In recent years, the present inventors have derived a calculation formula for determining the size, and this problem has been solved.

Furthermore, in a spherical speaker box, simply attaching a speed unit to the speaker box will cause the spherical box to be closed, and the cone paper will not be able to operate smoothly due to the internal and external air pressure. Problem of distorted sound There was a point. Therefore, the inventor of the present application has improved the efficiency of escaping sound pressure generated in the speaker box, further preventing sound disturbance due to standing waves, making bass reproduction more advantageous, and improving the acoustics of the entire reproduction sound band. Made an invention with improved effects and obtained a patent

(See Reference 1). According to this speaker device, the above-described conventional problems as described above have been solved, and even with a relatively small speaker box, it is possible to reproduce a smooth bass with a habit closer to the original sound. The present inventor has expanded his research field to pursue higher sound quality in the spherical speaker device and to enrich the practical application range without being satisfied with the technical level.

Patent Document 1: Japanese Patent No. 2946412

Disclosure of the invention

Problems to be solved by the invention

[0004] The present invention has been made in such a background, and in a speaker device having a spherical speaker box, smooth reproduction sound and richer bass can be reproduced, and the installation angle and the like can be adjusted. They are trying to realize a spherical speaker device that is also suitable for vehicle mounting.

Means for solving the problem

[0005] That is, the speaker device according to claim 1 includes a speaker unit that outputs sound and a speaker box that houses the speed unit, and the speaker box has a front side outside the speaker unit. In a speaker device having a speaker installation port for directing and having a configuration in which the inner wall surface side of a speaker box is formed in a spherical shape, a speaker cut is provided on a wall surface of the speaker box facing the center of the speaker unit. The speaker box has a through hole communicating with the outside of the speaker box to allow the strong sound pressure generated inside to escape to the outside during operation, and an acoustic tube communicates with the through wall of the speaker box on the inner wall side. It consists of.

[0006] The speaker device according to claim 2 includes a speaker unit that outputs sound and a speaker box that houses the speaker unit. The speaker box has a front side facing the speaker unit. A speaker device having a speaker installation port for directing and having a configuration in which the inner wall surface side of the speaker box is formed in a spherical shape is used. The speaker device attaches the speaker device to the interior wall of the vehicle, and uses the box space behind the interior wall of the vehicle as the inner volume of the speaker box on the wall of the speaker box facing the center of the speaker unit. It is characterized by having an open hole large enough to be opened.

[0007] Furthermore, in the speaker device according to claim 3, in addition to the requirements described in claim 1, the speaker box includes a sound absorbing material for absorbing and eliminating a standing wave generated inside the speaker unit during operation. And the diameter of the sound absorbing material is set to be equal to or larger than the diameter of the cone paper of the speaker cut.

[0008] Furthermore, in the speaker device according to claim 4, in addition to the requirements described in claim 1, 2, or 3, the speaker device uses two support plates having installation holes into which the speaker boxes fit. The box is sandwiched from the front and back while being fitted in the installation hole, and the speaker boss is rotatably supported.

[0009] Furthermore, in the speaker device according to claim 5, in addition to the requirements described in claim 1, 2, 3, or 4, for balancing the speaker unit around the through hole or the open hole of the speaker box. Characterized by being provided with a counter balancer of

[0010] Further, in the speaker device according to claim 6, in addition to the requirements described in claim 1, 3, 4, or 5, the sound tube is formed of a weight member that balances with the speaker unit. It is characterized by the following.

[0011] Further, in the speaker device according to claim 7, in addition to the requirements described in claim 1, 2, 3, 4, 5, or 6, the speaker box is formed by joining two hollow substantially hemispherical ones. It is characterized by being formed as follows.

[0012] Furthermore, in addition to the requirements described in Claims 1, 2, 3, 4, 5, 6 or 7, the speaker device according to claim 8 is taken out of the vehicle and mounted on an interior wall of the vehicle. It is characterized by being provided detachably so that it can be performed.

[0013] Furthermore, in the speaker device according to claim 9, in addition to the requirements described in claim 1, 2, 3, 4, 5, 6, or 7, a veneer sheet is attached to an outer surface of the speaker box. It is characterized by having been done. [0014] Furthermore, in the speaker device according to claim 10, in addition to the requirement described in claim 9, in manufacturing the veneer sheet,

a. In the boil process, the material to be processed is boiled for 2 to 80 days. The low-temperature boil is started, the temperature of the hot water is gradually increased until immediately before unloading, and the temperature of the hot water is reduced to 50 to 1 just before unloading. A process of rapidly increasing to an upper limit temperature of 70 ° C is performed,

b.In the pushing step, the thickness of the veneer material is set to 0.17 mm or more and 0.4 mm or less,

c In the veneer material pretreatment step, quick drying is performed within one hour after peeling by radiant heat from a heater to evaporate about 70% of the water content of the veneer material, followed by natural drying for several days or more. Is performed, and

d. The backing material prepared in the backing material preparation step is that a paper made from a raw material liquid having a Japanese paper raw material and a synthetic resin pulp raw material is applied,

e. Between the thermocompression bonding step and the product peeling step, there is provided a polishing finishing step of polishing the surface of the veneer material with a backing material supported on the base plate, and in this polishing finishing step, A process in which the abrasive material is brought into contact with the veneer plate material a plurality of times and the contact pressure is reduced to lower the initial contact pressure and then increased to the subsequent contact pressure;

f. In the product peeling step, the backing material with backing material is peeled off from the base plate! / ヽ, a process of sticking release paper to the base plate is performed, and all or a part of the above steps a to f are selectively adopted. Things.

[0015] Furthermore, in the speaker device according to claim 11, in addition to the requirements described in claim 10, when the veneer sheet is attached to an outer surface of the speaker box, the content of water contained in the veneer sheet is increased. It is characterized in that a processing step and a sticking step of sticking a veneer sheet to a speaker box while extending the veneer sheet are adopted. The invention's effect

The speaker device of the present invention has the following effects by the above-described means.

That is, according to the speaker device of claim 1, the speaker device faces the center of the speaker unit. By providing a through-hole to the wall of the speaker box, the sound pressure inside the speaker box is released to allow the cone paper of the speaker unit to vibrate smoothly and the sound pressure generated inside the speaker box by the acoustic tube Controls the excessive escape of sound, and the bass resonance principle of the bass flex allows for smoother sound reproduction and richer bass reproduction. By enriching the amount of sound information, the volume of the sound of radios, cassette tapes, CDs, etc. is not unnecessarily increased.For example, when installed in a vehicle, the external force required for driving the vehicle is reduced. Various information that leads to safe driving is not hindered, and vehicle driving safety is improved.

[0017] According to the speaker device of claim 2, since the box space behind the interior wall of the vehicle is used as the internal volume of the speed box, the sound volume is much larger than the apparent size of the speaker device. This allows for richer bass reproduction.

[0018] Further, according to the speaker device of the third aspect, if the inner wall surface of the speaker box is spherical, the sound is likely to be collected at the center. Therefore, by providing the sound absorbing material at the center of the speaker box, the speaker can be efficiently provided. It is possible to absorb and extinguish the standing wave in the box.

Further, according to the speaker device of the fourth aspect, the deflection angle of the speaker unit can be supported by a simple structure with a simple structure.

Further, according to the speaker device of the fifth aspect, since the counter balancer is provided, the posture stability of the speaker box is improved.

Further, according to the loudspeaker device of claim 6, it is not necessary to separately provide a counter balancer such as a weight in addition to the acoustic tube.

Furthermore, according to the speaker device of the seventh aspect, the manufacturing process can be relatively simplified, and sufficient strength as a speaker box can be obtained.

[0023] Furthermore, according to the speaker device of claim 8, since the speaker device can be used as audio outside the vehicle, when the user wants to enjoy music or the like outside the vehicle, he / she must carry a separate radio cassette tape recorder or the like as luggage one by one. No longer needed.

[0024] Furthermore, according to the loudspeaker device according to claim 9, the veneer sheet is extremely flexible, and is not cracked or cracked even when attached to a three-dimensional curved surface having large unevenness on the curved surface, and is completed. The loudspeaker device is very excellent in design. [0025] Furthermore, according to the loudspeaker device according to claim 10, the raw wood is gradually boiled slowly over time, and the temperature of the hot water is rapidly increased to the upper limit temperature that the raw wood can withstand immediately before the last removal. The veneer material, which is less likely to break or break during the punching process, which reduces the burden on the raw wood in the boil process, is flexible and can be cracked or broken even when attached to a three-dimensional curved surface. And cracks occur. When the veneer sheet is made as thin as 0.17 mm or more and 0.4 mm or less, it is flexible and can cope with a three-dimensional curved surface with finer irregularities. Furthermore, if quick drying is performed within one hour after peeling and natural drying (curing) is performed over a long period of time, the veneer material will harden in a state of shrinking from tens of percent to twenty-seven percent This makes it possible to obtain a durable veneer material 2 with elasticity, which is less likely to crack, break or break during or after the speaker box is stretched. Furthermore, when a paper-made material made from a raw material liquid having a Japanese paper raw material and a synthetic resin pulp raw material is used as the backing material, it is rich in water permeability, has good compatibility with the veneer material, and has a base material shape. Adhered deformation and fixation are achieved. Furthermore, in the case where a polishing finishing process for polishing the surface of the veneer material is provided, after the veneer sheet is attached to the base material to be decorated, the power to eliminate the polishing finish on the surface of the veneer sheet is also simplified. Becomes possible. When the contact pressure of the abrasive is lower than the initial contact and the contact pressure after that is increased, the surface of the veneer material is smoothly finished smoothly. Furthermore, when release paper is applied to the base plate, the release properties of the base plate force plate of the veneer material with a backing material in the product peeling process are improved, and the production efficiency is improved. The material adheres to the base plate side and does not peel off, or the adhesiveness to the base plate side is strong, and it is difficult to peel off.

[0026] Further, according to the speaker device of the eleventh aspect, the veneer material shrunk by drying in the veneer material pretreatment step is rich in flexibility and excellent in extensibility by a running-in processing step of increasing water content. Do not stretch the veneer sheet to the speaker box.Even in the bonding process, the veneer sheet is not cracked, torn or wrinkled. be able to.

Brief Description of Drawings

[FIG. 1] Two types of speaker devices of the present invention are installed on an interior wall of a vehicle door and on a lary tray, respectively. FIG. 2 is a perspective view showing an embodiment in which the speaker device is installed and an exploded perspective view of the speaker device.

FIG. 2 is a cross-sectional plan view showing an example in which the speaker device of the present invention is attached to a door.

[3] FIG. 3 is a side view showing a state where the speaker device of the present invention is mounted on a stand. [4] FIG. 4 is a vertical sectional side view of the speaker device of the present invention.

圆 5] (a) is an explanatory view showing another embodiment in which the sound absorbing material is supported by a cord, and (b) is a longitudinal side view showing another embodiment in which the sound absorbing material is provided on the inner wall surface of the speaker box. (C) is a longitudinal sectional side view showing another embodiment in which the configuration of the power balancer is changed.

FIG. 6 is an explanatory diagram showing an outline of manufacturing a speaker box.

FIG. 7 is a longitudinal sectional side view showing an embodiment in which a trunk box of a vehicle is used as an internal volume of a speaker box by a speaker device having an open hole.

[8] is an explanatory view showing the manufacturing process of the veneer sheet.

FIG. 9 is an exploded perspective view showing a veneer sheet, a base plate used for manufacturing the veneer sheet, and release paper.

FIG. 10 is a step-by-step explanatory view showing a state in which a veneer sheet is adhered to a speaker box through a conforming processing step and an adhering step.

FIG. 11 is a perspective view of the inside of a vehicle showing an installation example in which the speaker device of Embodiment 2 is applied to a wall surface of a rear space of the vehicle.

[12] Fig. 12 is a perspective view showing a vehicle rear surface force, showing Example 3 in which a speaker device is detachably configured.

Explanation of symbols

1A speaker device

1B speaker device

2 Speaker unit

2a Protector

3 Speaker box

30F Box front

30B Box rear

31 Speaker installation 32 Through hole

33 Open hole

4 Acoustic tube

5 weight

6 Sound absorbing material

60 sound absorbing material

7 Support rod

70 String

8 Veneer sheet

9 stand

91 Sales support plate

91a Installation hole

92 Rear support plate

92a Installation hole

93 Bottom plate

10 Mounting plate

11 Bracket

12 Veneer material

13 Backing material

14 Adhesive

15 bedplate

16 Release paper

17 Adhesive solution

B counter balancer

C early

CI interior wall

CIO LyaTray

BS screw w glued wood

Wh hole

H hot water

M type

P heating press equipment

s thunder

SI abrasive

S2 air pad

BT boiling tank

TO Log

Tl processing material

BEST MODE FOR CARRYING OUT THE INVENTION

The best mode of the present invention is specifically described in the following examples.

Example 1

Hereinafter, the present invention will be described based on the illustrated embodiments. Reference numerals 1A and 1B in the drawing denote speaker devices of the present invention.In FIG. 1, first, as an example, a speaker device 1A according to claim 1 of the present application is mounted on an interior wall C1 of a door of a vehicle C. And the one equipped with the speaker device 1B according to claim 2 of the present invention on the rear tray C10. The main difference between the speaker device 1A and the speaker device 1B is that, in the speaker device 1A, a through hole 32 is provided at the rear portion of the speaker box 3 and an acoustic tube 4 is provided on the inner wall surface of the speaker box. The speaker device 1B has an open hole 33 at the rear of the speaker box 3.

In the claims and the specification of the present application, the interior wall C1 refers to all the panel members to which the speed devices 1A and IB inside the vehicle C can be attached, and the ryatley C10 is also an interior wall C1. include.

Hereinafter, each of the speaker devices 1A and IB will be described in detail.

[1] Regarding the speaker device 1A

First, the speaker device 1A will be described. The speaker device 1A is a speaker that outputs sound. The speaker unit 2 includes a power unit 2 and a spherical speaker box 3 having a speaker installation port 31 in which the speaker unit 2 is installed.

[0032] As the speaker unit 2, it is possible to use various types of speaker units 2 which are conventionally known or will be improved in the future, and are the same as those generally distributed. On the front side of the speaker unit 2, a detachable sound-permeable protector 2a is provided.

Next, the speaker box 3 which is a characteristic member of the present invention will be described.

The speaker box 3 has a spherical outer shape as described above, and an inner wall surface is formed in a spherical shape as shown in FIG. Further, as described above, a circular speaker installation port 31 for installing the speaker unit 2 is provided on the front surface of the speaker box 3, and a wall of the speaker box 3 facing the center of the speaker installation port 31 has: There is provided a through-hole 32 communicating with the outside of the speed force box 3 for releasing the strong sound pressure generated inside when the speed force unit 2 operates to the outside.

In the embodiment shown in FIGS. 1 and 2, the speaker device 1A is rotatably supported via the bracket 11 to the interior wall C1 of the door of the vehicle C, and is mounted so that its installation direction can be deflected. In addition, the speaker device 1A can be installed at an appropriate position so that the installation direction can be deflected freely by using, for example, a stand 9 as shown in FIG. The stand 9 shown in FIG. 3 specifically includes a front support plate 91, a rear support plate 92, and a bottom plate 93. The front support plate 91 and the rear support plate 92 are provided with installation holes 91a and 92a for fitting the speaker box 3, and the front support plate 91 and the rear support plate 92 sandwich the speaker box 3 therebetween. The front support plate 91 and the rear support plate 92 are accommodated in 91a and 92a, and are fixed with screws BS or the like. At this time, the speed force box 3 can be freely rotated in the installation holes 91a and 92a of the front support plate 91 and the rear support plate 92.

On the other hand, the front support plate 91 and the rear support plate 92 are vertically fixed to the bottom plate 93 with screws BS or the like, and the bottom plate 93 is further fixed to the installation surface with screws BS. Of course, it can be modified to be fixed using double-sided adhesive tape.

Next, each member provided in the speaker box 3 will be described. The acoustic tube 4 is inserted and provided in the through hole 32 on the inner wall surface side of the speaker box 3 as shown in FIG. 1 (b) and FIG. In addition, this acoustic tube 4 has a ring to balance the weight with the speaker unit 2. The counterbalancer B to which the weight 5 is applied is externally fitted and fixed. A substantially spherical sound absorbing material 6 is supported by three support rods 7 attached to the tip of the acoustic tube 4 and is provided at a substantially central position in the speaker box 3.

[0036] The number of support rods 7 supporting the sound absorbing material 6 can be three, four, two, or any other suitable number. The support rods 7 can be attached to the acoustic tube 4, and the speaker unit can be used. The sound absorbing material 6 may be attached to the end of the speaker box 3 so as to be located substantially at the center of the speaker box 3. The sound absorbing material 6 may be supported by a string 70 as shown in FIG. As the cord 70, an elastic member that expands and contracts like synthetic rubber can be used. Further, the sound absorbing material 6 is located almost at the center of the speaker box 3 and is attached to the entire upper hemisphere on the inner wall surface of the speaker box 3 as shown in FIG. 5 (b), for example. Is also possible. The sound absorbing material 60 can be used in accordance with the characteristics of the speaker unit 2 used in this way and the desired timbre.

FIG. 5 (c) shows another embodiment of the counter balancer B. The counter balancer B uses an annular weight 5 as described above, as well as an acoustic balance as shown in FIG. 5 (c). The tube 4 itself may be formed of a material that can balance the weight with the speaker unit 2.

Next, the manufacturing process of the speaker box 3 will be briefly described. As shown in FIG. 6A, the speaker box 3 is formed by hollowing out the laminated wood W as an example. . Specifically, as shown in Fig. 6 (b), the center of the laminated wood W formed by laminating a plurality of wooden boards is cut into a hemisphere, and the outer edge of the hole Wh of the cut laminated wood W is shown in the figure. 6 As shown in (c), cut out further into a hemisphere. Then, a box front part 30F and a box rear part 30B are formed by the above-described method, and as shown in FIG. 6D, a speaker installation port 31 is opened in the center of the box front part 30F, and a box rear part is formed. A through hole 32 is provided at the center of 30B. A circular pipe-shaped acoustic tube 4 is provided in the through hole 32 by inserting the inner wall side force. Then, a weight 5 as a counterbalancer B for balancing the weight with the speaker unit 2 is externally fitted to the acoustic tube 4 and fixed. Further, as an example, a support rod 7 for supporting the sound absorbing material 6 is attached to the tip of the acoustic tube 4, and the sound absorbing material 6 is attached to the tip. While fitting the box front 30F and the box rear 30B manufactured as described above, It is formed into a spherical shape as shown in FIG. Further, in order to enhance the design of the speaker device 1A, a veneer sheet 8 whose natural eyes are thinly peeled (0.17 mm to 0.4 mm) is adhered to the outer surface of the speaker box 3.

[0038] The speaker box 3 can be manufactured by an appropriate manufacturing method using various materials, in addition to being formed by hollowing out the laminated wood W as described above. For example, a plywood made of a wooden material may be formed into a hemisphere by pressurizing, and the two hemispheres may be joined to form a spherical power box. Further, a metal plate or the like may be formed into a hemisphere by pressing with a pressing force, and the two hemispheres may be joined to form a spherical speaker box. Alternatively, a metal speaker such as aluminum, iron, or copper may be formed into a sphere or a hemisphere by a forging method, and the two may be joined to form a spherical speaker box. Alternatively, a spherical speaker box may be formed by joining two molds formed into spheres or into hemispheres by a resin casting method in which an acrylic resin or the like is poured into a molding die made of silicon. Alternatively, a synthetic resin plate formed into a sphere or a hemisphere by a vacuum forming method may be joined to form a spherical speaker box.

The veneer sheet 8 adhered to the outer surface of the speaker box 3 is obtained through the following manufacturing process.

(1) Wood removal process (See Fig. 8 (a))

First, the trees are cut down to obtain a log TO (log), which is then transported, for example, by sea. The species suitable for the veneer sheet 8 are mainly hardwoods, and many species such as oak, ash, hippopotamus, zelkova, oak, teak, and maple can be applied. The log of TO is used to obtain a processed material T1 with a shape suitable for the thrust force.

[0040] (2) Boil process (see Fig. 8 (b))

Then, the wood mashed material T1 is put into a boiling tank BT and boiled. This is because boiling is carried out for a long time to make it easy to scrape in a punching process described later, and to obtain a thin veneer blank 12. The boiling process is performed for 60 hours to 80 days, during which the temperature of the hot water is gradually increased. The number of days required for the boil process and the ultimate upper limit temperature differ depending on the condition of the raw wood TO even if the type is the same. For example, in the case of ebony, boiling is performed over 60 days, and the initial temperature (water temperature) is the cold water temperature. The temperature is about 4 ° C, and the power is gradually increased by slightly less than 1 ° C per day, and the level is about 50 ° C by the last three days immediately before unloading (the state of the processed material T1). In the last three days, boil at 60 ° C, the upper limit of the hot water temperature for boiling ebony. In the case of a hard maple, boiling is performed for three days, and the first temperature is 20-32 ° C, and the second temperature is 33-38 ° C. The temperature of the third 3

9 Perform at 55 ° C (55 ° C is the upper limit temperature of hot water for boiling the hard sample).

(3) Thrusting process (see FIG. 8 (c))

In the punching process, the processed material T1 that has passed through the above-described boiling process is cut by a cutting machine such as a rotor leaser or a vertical or horizontal slicer according to the use of the veneer sheet 8. Incidentally, in this embodiment, a rotor leaser is used as a cutting machine. The thickness of the veneer blank 12 is preferably within a range of 0.17 mm or more and 0.3 mm or less, and a thickness of 0.4 mm or less is suitable for use on a curved surface portion having strong bending.

[0042] (4) Veneer plate pretreatment process (see Figs. 8 (d) and (e))

The veneer blank 12 obtained in the punching process is hung in a drying room within 30 minutes and is quickly dried to evaporate about 70% of the water content by the radiant heat from the heater (as an example, the drying room temperature is about 38%). ° C), air-dry in an indoor environment while suspended for about a day. After that, the veneer material 12 is placed in a stacked state and cured for several tens of days. It is preferable that the quick drying be completed within one hour at most. In this veneer material pretreatment process, the veneer material shrinks by more than ten to twenty percent, but it is possible to obtain a very durable veneer material that is elastic enough to harden in the shrunk state. . Note that a dielectric heater using microwaves is suitable as the heater.

(5) Backing material preparation step (see FIG. 8 (f) and FIG. 9)

On the other hand, in a separate step, a backing material 13 to be adhered to the back surface of the veneer blank 12 is prepared, and in this embodiment, the backing material 13 is made of paper. A raw material liquid having a resin pulp raw material is used which is made of paper and has elasticity that can correspond to the elasticity of the veneer blank 12. As the base plate 15, a plate having a smooth surface and appropriate heat resistance and strength is preferable, and for example, a synthetic resin plate such as a duralumin plate or a polyester plate, a veneer plate, or the like can be used. The back bonded to the base plate 15 When a material that is easily peeled off from the hitting material 13 is used, it is not always necessary to attach the release paper 16. In this backing material preparation step, the backing material 13 is adhered on the base plate 15. First, the adhesive 14 is applied on the base plate 15 to which the release paper 16 is adhered, and then the adhesive 14 is applied thereon. A backing material 13 is adhered to the base material 15, and an adhesive 14 is applied to the upper surface of the backing material 13 on the base plate 15.

(6) Thermocompression bonding process (see FIG. 8 (g))

In the thermocompression bonding step, the veneer blank 12 is placed on the upper surface of the backing material 13 on the base plate 15 to which the adhesive 14 has been applied, and thermocompression bonded. As an example of the heating means, a Caro heat press device P is used as an example, and a heating press is performed at a pressure of 100 kg / cm ² and a heating temperature of about 100 ° C. for about 5 to 10 seconds.

(7) Polishing / finishing process (see FIG. 8 (h))

Next, the veneer blank 12 held and held by heating and pressing on the base plate 15 is polished by a sander S. In this polishing finish, the abrasive material S1 (sanding belt) is brought into contact a plurality of times, and the contact pressure is reduced by lowering the initial contact and increasing the subsequent contact pressure. Specifically, the abrasive material used is, for example, one with a roughness of about 240, and the initial contact pressure is the pressure of the air pad S2 that presses the abrasive material S1 from the side opposite to the polishing surface. It is performed at about 0.05-0.2 kg / cm ² , and the subsequent contact pressure is about three times the pressure.

It is to be noted that the polishing and finishing step can be omitted as appropriate, and the polishing may be performed after the veneer sheet 8 is attached to the speaker box 3!

(8) Veneer Sheet Peeling Step (See FIG. 8 (i))

The veneer sheet 12 with the backing material 13 integrated with the backing material 13 is peeled off from the base plate 15 and inspected for cracks, breaks, cracks, etc., and the veneer sheet 8 is obtained. Since the release paper 16 is adhered to the base plate 15 at the time of peeling, the backing material 13 does not stick to the base plate 15 but sticks to the side of the veneer material 12, so that it is very easy to peel off.

[0047] The veneer sheet 8 obtained as described above is rich in flexibility and can be applied to an adhered member having a three-dimensional curved surface having a large three-dimensional curved surface with a large difference in height of irregularities that cannot be conventionally handled. It can be installed without cracking, tearing or cracking. When the veneer sheet 8 is adhered to the speaker box 3, the following characteristic adhering method is adopted so that cracks, cracks, wrinkles, and the like do not occur.

That is, when the veneer sheet 8 manufactured by the above-described manufacturing method is attached to the speaker box 3, the veneer sheet 8 is subjected to a conforming process of including moisture, and the back side of the veneer sheet 8 (the backing material). Side), an adhesive solution 17 is applied to the speaker box 3 while the veneer sheet 8 is stretched.

In the adaptation process, as an example, the veneer sheet 8 is immersed in a water tank filled with hot water H, water is sprayed on the veneer sheet 8, painted with a brush, or placed in a steam chamber for a predetermined time. The veneer sheet 8 is moistened by suspending the veneer sheet 8 to increase the moisture content of the veneer sheet 8 (see FIG. 10 (a)).

In the attaching step, an acrylic adhesive solution 17 is applied to the back side of the veneer sheet 8 by, for example, diving, spraying, brushing, or the like (see FIG. 10B), and the veneer sheet is manually placed. While pulling and extending 8, the speaker box 3 is attached to the components that make up the speaker box 3 (in the example of FIG. 10, 30F at the front of the box) (see FIGS. 10 (c) and 10 (d)). At this time, the veneer sheet 8 is excellent in extensibility, for example, 13-20, because the veneer material 12 contracted by more than ten to twenty and a few percent in the veneer material pretreatment step is subjected to the above-mentioned conforming treatment. % It can be stretched without cracking or tearing. Also, after attaching the veneer sheet 8, the veneer sheet 8 wound around the front part 30F of the box with a mold M as shown in Fig. If the mold M is removed after a lapse of several tens of minutes, the bonding of the veneer sheet 8 to the front part 30F of the box is completed as shown in FIG. 10 (f). The veneer sheet 8 is similarly adhered to the rear part 30B of the box.

In the speaker box 3 to which the veneer sheet 8 is attached as described above, the veneer sheet 8 is rich in flexibility. There is no cracking or cracking, and the design is very good.

[0052] The speaker device 1A of the present invention is configured as described above. When using this device, first, the direction of the speaker unit 2 in the device is adjusted to a desired angle position. That is, the speaker box 3 is spherical, is housed in the installation holes 91a and 92a of the interior wall C1 and the stand 9, and has the counterbalancer B as a weight 5 installed therein. Therefore, the angle can be adjusted in the free direction, and the stability of maintaining the posture is excellent.

When sound is generated from the speaker device 1A, since the speaker box 3 is spherical, there is no specific side unlike the rectangular box-shaped speaker device. It produces a good bass range exceeding the size of the speaker box 3 that cannot be considered in a speaker box 3 with a corner like a rectangular box-shaped speaker device that does not have the above problem, and a smooth sound with little habit. If the through holes 32 are not provided at this time, since the inside of the speaker box 3 is in a closed state, the sound pressure in the speaker box 3 that generates sound before and after the cone paper of the speaker unit 2 is contained. This is a force that prevents smooth vibration of the cone paper of the speaker unit 2 in the present embodiment. In this embodiment, the force is quickly removed from the through hole 32 through the acoustic tube 4 in the speaker box 3. However, the interference of the vibration of the cone paper of the speed unit 2 does not occur. If the through-hole 32 is merely opened while applying force, the sound pressure in the speaker box 3 will be excessively eliminated, and the cone paper of the speaker will move freely, and the cone paper will overvibrate. Since the acoustic tube 4 is provided in the through-hole 32, which causes distortion of the reproduced sound, the over-vibration of the cone paper is suppressed, and the smooth sound reproduction is achieved by the principle of the tube resonance operation of the nosflex. Rich bass can be reproduced.

Further, when the speaker device 1A generates a power sound, since there is no inherent parallel plane on the inner surface of the sphere of the speaker box 3, there should be no flutter echo of the squeak dragon phenomenon generated between the parallel planes. However, since the flutter echo is generated with little force, the sound absorbing material 6 absorbs and eliminates the flutter echo.

[2] Regarding Speaker Device 1B

Next, referring to FIG. 1 and FIG. 7, a description will be given of the speeding device 1B buried in the lyray tray C10 of the vehicle C of the sedan type. The speaker device 1B, like the speaker device 1A, includes a speaker unit 2 that outputs sound and a spherical speaker box 3 having a speaker installation port 31 in which the speaker unit 2 is installed. The speaker unit 2 and the spherical speaker box 3 are formed by hollowing out the laminated wood W as shown in the speaker device 1A, for example. The wall of the speaker box 3 facing the center of the power unit 2 has an open hole large enough to use the box space behind the interior wall of vehicle C as the internal volume of the speaker box 33. Is open. In the present embodiment, as an example, the size of the open hole 33 is formed to be about 70% of the diameter of the speaker box 3. A counterbalancer B with an appropriate weight 5 is provided on the periphery of the open hole 33. Unlike the speaker device 1A, the speaker box 3 is not provided with the sound absorbing material 6 as an example.

[0056] According to the speaker device 1B having the above-described configuration, the trunk box below the lary tray C10 of the vehicle C is used as the internal volume of the speaker box 3, so that it is much larger than the apparent size of the speaker device 1B. A loud volume and richer bass reproduction can be achieved. Note that the speaker device 1B can of course be installed on the door of the vehicle C or the like.

Example 2

FIG. 11 shows an embodiment in which a speaker device 1B is provided on the interior wall C1 of a! SUV car (sports utility vehicle,, suru station wagon, 1BOX car, minivan, etc.).

Example 3

FIG. 12 shows an embodiment in which the speaker device 1 A provided on the interior wall C 1 of the vehicle C is detachable so that the speaker device 1 A can be placed outside the vehicle to enjoy music and the like. In this embodiment, as an example, a configuration is adopted in which the speaker device 1A is detachably attached to the interior wall C1 of the vehicle together with the mounting plate 10 rotatably attached by the bracket 11!

Industrial applicability

[0059] The present invention is particularly advantageous in places where the installation space is limited, such as in a vehicle.

Claims

The scope of the claims

[1] A speaker unit for outputting sound, and a speaker box for accommodating the speaker unit. The speaker box has a speaker installation port in which the front side of the speaker unit is directed to the outside, and a speaker box for the speaker unit. A speaker device having a configuration in which an inner wall surface is formed in a spherical shape is provided.

On the wall of the speaker box facing the center of the speaker unit, a through-hole communicating with the outside of the speaker box is provided for releasing the strong sound pressure generated inside when the speaker box operates to the outside. A speaker device, wherein an acoustic tube is provided so as to communicate with a through hole on the inner wall surface of the speaker box.

[2] A speaker unit for outputting sound, and a speaker box for accommodating the speaker unit. The speaker box has a speaker installation port in which the front side of the speaker unit is directed to the outside, and has a speaker box. A speaker device having a configuration in which an inner wall surface is formed in a spherical shape is provided.

In this speaker device, the speaker device is mounted on an interior wall of a vehicle, and a wall space of the speaker box facing the center of the speed unit is defined as a box space behind the interior wall of the vehicle as an internal volume of the speaker box. A speaker device characterized by having an open hole large enough to be used.

[3] At the center of the speaker box, a sound absorbing material for absorbing and extinguishing a standing wave generated inside when the speaker unit operates is provided, and the diameter of the sound absorbing material is determined by the cone of the speed unit. The speaker device according to claim 1, wherein the speaker device is set to be equal to or larger than the diameter of the paper.

[4] The speaker box is rotatably held by using two support plates having an installation hole to which the speaker box is fitted, sandwiching the speaker box from the front and back with the speaker box fitted into the installation hole. 4. The speaker device according to claim 1, wherein the speaker device is supported.

5. The speaker device according to claim 1, wherein a counter balancer for balancing with the speaker unit is provided around a through hole or an open hole of the speaker box.

[6] The sound tube is formed of a weight member that balances with the speaker unit. The speaker device according to claim 1, 3, 4, or 5, wherein:

[7] The speaker device according to any one of claims 1, 2, 3, 4, 5, and 6, wherein the speaker box is formed by joining two hollow substantially hemispherical members.

[8] The vehicle according to claim 1, 2, 3, 4, 5, 6, 7 or 8, which is detachably mounted on an interior wall of the vehicle so that the vehicle can be taken out of the vehicle and mounted thereon. Speaker device.

[9] The speaker device according to claim 1, 2, 3, 4, 5, 6, 7, or 8, wherein a veneer sheet is attached to an outer surface of the speaker box.

[10] In manufacturing the veneer sheet,

f. In the product peeling step, the backing material with backing material is peeled off from the base plate! / ヽ, a process of sticking release paper to the base plate is performed, wherein all or a part of the above steps a to f are selectively adopted. The speaker device according to claim 9.

[11] When the veneer sheet is attached to the outer surface of the speaker box, a running-in process of increasing the water content of the veneer sheet and a veneer sheet to the speaker box are performed. The speaker device according to claim 10, wherein a sticking step of sticking while extending is adopted.