JPH077778A - Speaker system and speaker supporting structure - Google Patents

Abstract

PURPOSE:To change the resonance frequency of a speaker and to improve tone consequently. CONSTITUTION:The top surface 1d of the speaker 1 mounted on the contact board 3 of a stand 2 is pressed by the contact board 3 engaged with the tip of a strut 4 fixed to a ceiling 8 by a mounting board 6. Thus, the speaker 1 receives a compression force from the top surface 1d and a bottom surface, a speaker cabinet 1a becomes equivalent to the one with improved rigidity, intrinsic values such as the resonance frequency or the like are changed and also vibration attenuation characteristics are improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for a speaker, and by sandwiching the speaker with two contact plates,
The present invention relates to a speaker support structure suitable for equivalently increasing the rigidity of a speaker cabinet.

[0002]

2. Description of the Related Art Conventionally, a speaker shown in FIG. 12 or a structure (not shown) for mounting on a wall or a ceiling has been widely used for installing a speaker in an audio device.

In the case of the structure in which the speaker 21 is supported by the stand 21 composed of the substrate 21a, the support columns 21b, and the mounting plate 21c, the vibration transmitted from the floor 7 is temporarily cut by the weight of the speaker 1 and the stand 21, and the installation position is reduced. Since it can be adjusted freely, these were intended to improve the sound quality.

FIGS. 13 and 14 show speaker characteristics in this case. FIG. 13 shows vibration damping characteristics of the baffle surface 1b, and FIG. 14 shows speaker radiation sound damping characteristics.

Further, in the case of the structure in which the speaker 1 is mounted on the wall or ceiling, the vibration transmitted from the floor 7 is cut by fixing the speaker 1 to an appropriate place, and the sound quality is improved. Since the floor 7 is not used in this structure, a space factor can be gained.

[0006]

However, in the above-described conventional speaker support structure, unnecessary vibration is cut or the installation position is changed by changing the support structure by mounting the speaker on the ceiling or wall or changing the weight or structure of the stand. Although it was possible to improve the sound quality by improving the sound field by changing the sound field, these are, after all, macroscopic improvements. The attenuation characteristics of the baffle surface and the radiated sound at the time of sound emission shown in FIG. 13 and FIG. The characteristics peculiar to the speaker, such as the attenuation characteristics of, could not be improved.

The present invention has been made in view of the above points, and an object thereof is to solve the drawbacks of the conventional example and change the resonance frequency of the speaker, thereby improving the sound quality. An object of the present invention is to provide a speaker system and a speaker support structure that can be designed.

[0008]

The speaker system of the present invention is configured such that a compressive force is applied from the outside of the cabinet to at least two opposing plate members of the speaker cabinet in which the speaker unit is mounted.

The speaker support structure of the present invention comprises a contact plate releasably engaged with a stand on which the speaker is mounted,
A contact plate releasably locked to a pillar mounted on the ceiling is provided, and the contact plates press the bottom surface and the top surface of the speaker cabinet to sandwich the speaker.

Further, in the speaker support structure, the contact plates are detachably engaged with at least two arms provided on the stand, and the left and right side surfaces of the speaker cabinet are pressed and sandwiched by the two contact plates. It is configured as follows.

Further, in the speaker supporting structure, the speaker plates are opposed to each other by the contact plates releasably engaged with at least two arms attached to a wall or a ceiling.
It is configured such that two surfaces are pressed and sandwiched.

In the above speaker support structure, a projection is provided on a surface of the contact plate that comes into contact with the speaker, and at least a surface of the projection is formed of a vibration isolator.

In the above speaker supporting structure, the supporting column and the arm are provided with adjusting means for adjusting the length.

[0014]

According to the present invention, the speaker system described above comprises:
Since the compressive force is applied to at least two opposing plates from the outside of the speaker cabinet, the rigidity of the speaker cabinet is equivalently increased.

In the speaker support structure, the speaker is sandwiched by pressing the bottom surface and the top surface of the speaker cabinet with the contact plates or pressing the left and right side surfaces of the speaker cabinet with the contact plates. , The speaker receives a compressive force from the upper and lower sides or the left and right sides via the protrusions of both contact plates.

This compression force is equivalent to the rigidity of the speaker cabinet being increased, and the vibration characteristics (vibration mode) of the speaker cabinet which is heavier and has higher rigidity than this speaker are improved. be able to.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a speaker support structure according to the present invention will be described with reference to FIGS. The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

FIG. 1 is a perspective view showing a first embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the length adjusting means is further provided on the column of the stand in the first embodiment.
FIG. 3 is a perspective view showing a contact plate according to the present invention. FIG. 4 is a perspective view showing the adjusting means for adjusting the length of the column according to the present invention.

FIG. 5 is a perspective view showing a second embodiment of the present invention. FIG. 6 is a perspective view showing a third embodiment of the present invention. FIG. 7 is a perspective view showing a fourth embodiment of the present invention.

FIG. 8 is a perspective view showing a state where the contact plate on the top surface of the speaker is locked by the arm provided on the stand in the present invention. FIG. 9 is a perspective view showing a state in which the contact plate on the top surface of the speaker is locked by the arm attached to the wall in the present invention. FIG. 10 is a diagram showing the vibration damping characteristics of the speaker baffle surface in the first embodiment of the present invention. FIG. 11 is a diagram showing attenuation characteristics of speaker radiation sound in the first embodiment of the present invention.

In the first embodiment shown in FIGS. 1 to 4, the speaker 1 is a speaker cabinet 1a and two speaker units 1c arranged on a front baffle surface 1b.
It shows a closed-type speaker system configured by a network (not shown). 1d is the top surface.

Reference numeral 2 denotes a stand for the speaker 1, which is composed of a circular metal, wood, or resin column 2b erected on a metal or wooden substrate 2a and a contact plate 3 locked on the column 2b. ing. Reference numeral 2c denotes a stepped screw portion, which has the same cross section as a post 4 described later and has a stepped screw portion 4
It has a structure similar to that of e.
Constitutes an adjusting means 5 for length adjustment which moves up and down without changing the direction.

Reference numeral 3 is a metal or wooden contact plate. The contact plate 3 is attached to the upper portion of the stand 2 and the speaker 1 is placed thereon. Further, the contact plate 3 presses the top surface of the speaker 1 and both left and right side surfaces. The contact surface 3c of the two contact plates 3 that contacts the speaker 1 is provided with four hemispherical protrusions 3d having the same height, and the surfaces of these protrusions 3d are coated with a rubber material for vibration isolation. . Mounting surface 3e
Is provided with a protrusion 3f with which the column 4 is engaged.

Reference numeral 4 is a column having a circular cross section, which is made of metal, wood, resin or the like, and is provided with an adjusting means 5 for adjusting the length in the middle part. In this adjusting means 5, one of the columns 4a constituting the column 4 is processed with a screw 4b at its tip, and a guide portion 4c is further provided at its tip, and the other column 4 is provided.
A hole for inserting the guide portion 4c is provided in the inner diameter portion of d, and a stepped screw portion 4e which is screwed with the screw 4b is provided in this opening portion. Replace the stepped screw part 4e with the screw 4c.
By screwing to and turning to the left and right, the length of the support column 4 changes and the support column 4 expands and contracts. A recess 4f that engages with the protrusion 3f of the contact plate 3 in a rotatable and disengageable manner is provided at the center of the end of the column 4d. By rotating the stepped screw portion 4e, the contact plate 3 which is rotatably and disengageably locked to the support column 4d is pressed against or separated from the speaker 1 without changing its direction.

6 is a mounting plate, made of metal or resin,
It is attached to the ceiling 8 and the support column 6 is attached to the attachment plate 6. Reference numeral 7 is a floor and 8 is a ceiling (upper structural member).

In the case of the speaker supporting structure shown in FIG. 1, the speaker 1 is placed on the contact plate 3 of the stand 2 attached to the floor 7 at the position where the speaker 1 is installed, and the ceiling 8 directly above the speaker 1. The support 4 is attached to the mounting plate 6 fixed thereto, and the recess 4f at the tip of the support 4 and the projection 3d of the other contact plate 3 are fitted together, and the contact plate 3 is positioned at the center of the speaker 1 top surface 1d. Let

Then, the pillar 4 is extended by arbitrarily turning the stepped screw portion 4e, and the protrusion 3d of the contact plate 3 is pressed against the top surface 1d of the speaker 1 with an arbitrary force, so that the speaker 1 is moved by both contact plates 3. It will be pinched.

For this reason, the speaker 1 is compressed by the small projections 3d of the two contact plates 3 on the top surface 1d and the bottom surface under a concentrated load at each of the four positions, so that the rigidity of the speaker cabinet 1a is increased. As a result, the vibration characteristics of the speaker cabinet, which is heavier and has higher rigidity than the speaker cabinet 1a, are equivalent to those of the speaker cabinet 1a. Therefore, the vibration mode generated when the speaker unit 1c emits sound is transmitted to the speaker cabinet 1a, and the decay time of the speaker cabinet 1a itself is shortened to suppress the squeaking of the speaker cabinet 1a. Frequency characteristics are improved.

The speaker 1 in this embodiment shown in FIG.
The vibration damping characteristic of the baffle surface 1b is improved as compared with the speaker 1 shown in FIG. 13 mounted on the conventional stand 21. That is, the resonance frequency near 60 Hz is 200 Hz
Moving to the neighborhood, the decay time (millisec) has become shorter.

The attenuation characteristic of the radiated sound of the speaker 1 in this embodiment shown in FIG. 11 is 10 as compared with the characteristic shown in FIG. 14 in which the speaker 1 is mounted on the conventional stand 21.
Attenuation characteristics are improved over the entire range of 0 Hz to 1 KHz, and particularly sound near 200 Hz (portion surrounded by circle (P) in FIG. 14).
Decays quickly.

As described above, according to the speaker support structure of the present embodiment, unnecessary reverberant sound can be reduced, the radiated sound from the two speaker units 1c is not muddy, and a good audible characteristic can be obtained.

In the case of the speaker support structure shown in FIG. 2, the adjusting means 5 is attached to the support column 2b of the stand 2 of the support structure shown in FIG.
By adjusting the vertical position of the contact plate 3 on which the speaker 1 is placed by turning the stepped screw portion 2c, the speaker 1 is set to the optimum position, and the speaker 1 is accordingly set. The upper stepped screw part 4e is rotated to push down the upper contact plate 3 and press the top surface 1d.

As a result, similarly to the case of FIG. 1, the speaker 1 has the top surface 1d via the projections 3d of the upper and lower contact plates 3.
And the compressive force from the bottom surface, the rigidity of the speaker cabinet 1a is equivalently increased, and is equivalent to the vibration damping characteristic of the baffle surface 1a of the speaker 1 shown in FIG. 10 and the damping characteristic when the speaker 1 emits sound shown in FIG. The characteristics of are obtained.

In the second embodiment shown in FIG. 5, 2d is a mounting plate, which is fixed to the top of the column 2b of the stand 2.

Reference numeral 9 is an arm made of metal or resin,
The cross section is the same as the pillar 4, and one end is a mounting plate 2d.
Is fixed to the left and right sides of each of the parts, and is bent upward in a substantially U shape, and the adjusting means 5 for adjusting the length is provided in the horizontal part.
A structure similar to the above is provided on both arms 9, and two contact plates 3 for pressing the left and right side surfaces of the speaker 1 are provided at the ends thereof, like the contact plate 3 locked to the support column 4 in the first embodiment. It is locked so that it can rotate and engage and disengage.

In the case of this speaker support structure, by rotating the left and right stepped screw portions 9a, both contact plates 3 are brought closer to the speaker 1 side, and the speaker 1 is pressed from both sides via the protrusions 3d. To pinch. Therefore, the speaker 1 is compressed by the concentrated loads from the left and right side surfaces by the four protrusions 3d on one side, which is equivalent to the rigidity of the speaker cabinet 1a being increased as in the first embodiment shown in FIG. Then, the eigenvalues such as the resonance frequency change, and the vibration damping characteristics of the baffle surface 1a of the speaker 1 shown in FIG.
The characteristics change substantially in the same manner as the attenuation characteristics when the speaker 1 emits sound as shown in FIG.

In the third embodiment shown in FIG. 6, 10a is an L-shaped arm, which has the same cross section as the pillar 2b and the arm 9, and one end of which is fixed to a fixture 11 mounted on the wall 12. The other end bent in an L shape is provided with the same structure as the adjusting means 5 for adjusting the length, and the contact plate 3 on which the speaker 1 is mounted is locked to the column 2b at the tip thereof. Like the first contact plate 3a, it is locked so as to be rotatable and disengageable.

Reference numeral 10b is an L-shaped arm.
An arm having the same shape in cross section as 0a and having a top surface 1d of the speaker 1 placed on the contact plate 3 on a wall 12 having a fixture 11 and a stepped screw portion 10c like the arm 10a. The contact plate 3 locked to 10b is pressed and supported.

In the case of this speaker supporting structure, as in the first embodiment shown in FIG. 2, since the speaker 1 is sandwiched by the contact plates 3, the speaker cabinet 1a is mounted on the top surface 1.
It is equivalent to that the cabinet 1a is compressed from the bottom surface d and the rigidity of the cabinet 1a is increased, and the speaker 1 shown in FIG.
The vibration damping characteristics of the baffle surface 1a and the damping characteristics when the speaker 1 emits sound shown in FIG. 11 is obtained.

In this speaker support structure, the upper and lower stepped screw portions 10c allow fine adjustment of the vertical position of the speaker 1, so that the speaker 1 can be set at the optimum position.

In the fourth embodiment shown in FIG. 7, 13 is L
It is a V-shaped arm and has the same shape in cross section as the arm 10a. One ends of the two arms 13 are fixed to the fixtures 11 attached to the ceiling 8 and are bent in an L-shape. Stepped screw portions 13a constituting the adjusting means 5 for length adjustment are provided at both ends of both arms 13 like the stepped screw portion 10c of the arm 10a, and the left and right side surfaces of the speaker 1 are provided at the tips thereof. The contact plate 3 that presses is locked so as to be rotatable and disengageable.

In the case of this speaker support structure, the speaker 1 is placed on a stand (not shown) and is placed at a predetermined position between the contact plates 3. Then, the left and right stepped screw portions 13a are turned to move both the contact plates 3 in the left and right side directions of the speaker 1, and the speaker 1 is pressed from both sides via the protrusions 3d as in the second embodiment shown in FIG. Then, the speaker 1 is clamped.

Therefore, the speaker 1 has four protrusions 3 on one side.
As a result, the speaker cabinet 1 is compressed by receiving a concentrated load from both left and right side surfaces by d, as in the second embodiment shown in FIG.
This is equivalent to the increase in the rigidity of a, and the vibration damping characteristics of the baffle surface 1a of the speaker 1 shown in FIG.
The characteristics change in substantially the same manner as the attenuation characteristics when the speaker 1 emits sound as shown in FIG.

In the first embodiment, the contact plate 3 for pressing the top surface 1d of the speaker 1 is locked to the support column 4 attached to the ceiling 8. However, the present invention is not limited to this, and is shown in FIG. The contact plate 3 to the arm 14 provided on the stand 2,
The stepped screw portion 14a similar to the stepped screw portion 4e may be turned to adjust the pressing force of the speaker 1 to sandwich the speaker 1.

Further, as shown in FIG. 9, the contact plate 3 is
May be locked to the arm 10b attached to the wall 12 as in the third embodiment shown in FIG. 6, and the stepped screw portion 10c may be rotated to adjust the pressing force of the speaker 1.

In this embodiment, the surface of the projection 3 provided on the contact plate 3 is coated with a rubber material, but all the projections 3 may be made of a rubber material having high hardness.

The contact plates 3 may be manufactured in different shapes and materials, and the contact plates 3 may be exchanged for use.

In the present embodiment, as shown in FIG. 4, the protrusion 3f of the contact plate 3 is engaged with the recess 4f provided at the end of the columns 4, 2b and the arms 9, 10a, 10b, 13, 14. However, the present invention is not limited to this, and contrary to the above, a protrusion is provided at the end of each of the columns 4, 2b and the arms 9, 10a, 10b, 13, 14 and the protrusion is used as the contact plate. The structure may be such that it engages with the concave portion provided in 3.

[0049]

According to the speaker support structure of the present invention, since the bottom surface and the top surface or both left and right sides of the speaker are pressed and sandwiched by the contact plates having the protrusions, the rigidity of the speaker cabinet is increased. The resonance frequency, vibration damping characteristics, and other eigenvalues are changed to become equivalent to that of the speaker cabinet, which is equivalent to the vibration characteristics of a speaker cabinet that is heavier and more rigid than this speaker, and as shown in FIGS. The resonance frequency in the vicinity moved to around 200 Hz,
The baffle surface attenuates faster, and as can be seen from FIGS. 11 and 14, the attenuation characteristic of the speaker radiation sound improves. Therefore, the reverberant sound unnecessary for the speaker is reduced, and the radiated sound from the speaker unit becomes a clear sound without becoming muddy, which is a very good sound in terms of hearing.

Further, the vibration pressure of the speaker cabinet is changed by changing the pressing force of the speaker by the above contact plate with the stepped screw portion or by using the contact plate of different shape and material, and the installation place or the music source is changed. Or you can control the sound to suit your taste.

Further, as shown in FIGS. 1 and 2, the top and bottom surfaces of the speaker are pressed and fixed on the stand by the ceiling and the floor, so that the speaker support structure and the speaker become an integral structure and vibrate. The vibrating ground that escapes becomes clear and the sound quality improves.

Further, the support structure having the arm fixed to the wall or the ceiling does not use the floor, so that the space factor is improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a length adjusting means is provided on a column of a stand in the first embodiment of the present invention.

FIG. 3 is a perspective view showing a contact plate according to the present invention.

FIG. 4 is a perspective view showing an adjusting means for length adjustment according to the present invention.

FIG. 5 is a perspective view showing a second embodiment of the present invention.

FIG. 6 is a perspective view showing a third embodiment of the present invention.

FIG. 7 is a perspective view showing a fourth embodiment of the present invention.

FIG. 8 is a perspective view showing another embodiment of the present invention.

FIG. 9 is a perspective view showing another embodiment of the present invention.

FIG. 10 is a diagram showing vibration damping characteristics of the speaker baffle surface in the first embodiment of the present invention.

FIG. 11 is a diagram showing attenuation characteristics of radiated sound in the first embodiment of the present invention.

FIG. 12 is a perspective view showing a conventional speaker support structure.

13 is a diagram showing vibration damping characteristics of the speaker baffle surface in FIG.

FIG. 14 is a diagram showing attenuation characteristics of speaker radiation sound in FIG.

[Explanation of symbols]

1: Speaker 1a: Speaker cabinet 1b: Baffle surface 1c: Speaker unit 1d: Top surface 2: Stand 2a: Substrate 2b, 4, 4a, 4d: Support post 3: Contact plate 3c: Contact surface 3d: Protrusion 3e: Mounting surface 3f : Projection part 4b: Screw 4c: Guide part 2c, 4e, 9a, 10c, 13a, 14a: Stepped screw part 4f: Recessed part 5: Adjusting means 6: Mounting plate 7: Floor 8: Ceiling 9, 10a, 10b, 13 , 14: Arm 11: Fixture 12: Wall

Claims (7)

[Claims] 1. A speaker system characterized in that a compressive force is applied from the outside of the cabinet to at least two opposing plates of a speaker cabinet to which a speaker unit is attached. 2. A contact plate releasably locked to a stand on which a speaker is placed, and a contact plate releasably locked to a pillar mounted on a ceiling, wherein the contact plates are speakers. A speaker support structure characterized in that the speaker is sandwiched by pressing the bottom surface and the top surface of the cabinet. 3. A contact plate is detachably engaged with at least two arms provided on a stand on which a speaker is placed, and the left and right side surfaces of the speaker cabinet are pressed by the two contact plates to be sandwiched. A speaker support structure characterized by being configured. 4. At least two mounted on a wall or ceiling
With the contact plate that is detachably locked to one arm,
A speaker support structure characterized in that it is configured such that two opposite surfaces of a speaker cabinet are pressed and sandwiched. 5. A protrusion is provided on a surface of the contact plate that contacts the speaker.
The speaker support structure described. 6. The speaker support structure according to claim 5, wherein at least the surface of the protrusion provided on the contact plate is formed of a vibration isolator. 7. The speaker support structure according to claim 2, 3 or 4, characterized in that an adjusting means for adjusting a length is provided on the column and the arm.