JP2585350Y2 - Speaker system - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker arrangement of a speaker system.

[0002]

2. Description of the Related Art As a technique relating to speaker placement, a speaker resonance preventing apparatus filed by the present applicant has been proposed in Japanese Utility Model Publication No. 43-143.
No. 23406.

FIG. 5 is a partial longitudinal sectional view of the resonance preventing device for a speaker. According to this conventional speaker system 50, a screw hole 53 is formed after the yoke 52 including the magnet of the speaker 51, and a screw 55 is planted at one end of the reinforcing member 54. The other end of 54 is fixed to a rear lid 56 with a wood screw 57 or the like. still,
In the figure, 58 is a front baffle board, and 59 is a frame of the speaker 51.

According to this configuration, the yoke 5 having a large mass
2 is securely fixed and supported by the frame 59 and the rear lid 56, and the stiffness of the holding portion is increased and made rigid, so that resonance caused by the mass of the yoke 52 and the stiffness of the frame 59 and the baffle board 58 occurs. It could be significantly reduced.

[0005]

However, since the yoke 52 of the speaker 51 and the rear lid 56 are supported by the reinforcing member 54, a member having high rigidity and a relatively long length is required as the reinforcing member 54. Met. Therefore, a relatively heavy reinforcing member 54 is required, which has been a factor in making the speaker system 50 heavier.

Accordingly, an object of the present invention is to provide a speaker system capable of reducing vibration and resonance while reducing the weight of the speaker system and increasing the magnetic flux density of the speaker magnet section. is there.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a plurality of loudspeakers arranged in a horizontal plane in a direction in which the axis is dynamically balanced with the direction of motion of the vibration system, and The axes are arranged so as to have the same elevation angle with respect to the horizontal plane in the vertical plane, and the support systems of the plurality of speakers are connected to each other by the member having high rigidity in the axial direction. It is characterized by wearing.

[0008]

A plurality of loudspeakers are arranged in a horizontal plane in a direction in which the axis is dynamically balanced with the direction of motion of the vibration system, and these support systems are connected to each other by a member having high rigidity (hereinafter referred to as a coupling member). ), The cabinet and the support system hardly move in response to the movement of the vibration system, so that a relatively small connecting member can be used, and the weight of the cabinet can be reduced.

[0009] Since the speakers are arranged in opposite directions, the same polarity of the magnets of the vibration system face each other. Therefore, the leakage magnetic flux from the yoke side can be reduced, and the magnetic flux density can be increased accordingly.

Since the axes are arranged so as to have the same elevation angle with respect to the horizontal plane in the vertical plane, the center of gravity of the whole speaker can be located at the center of the coupling member. Therefore,
The whole speaker can be supported in a well-balanced manner only by attaching the vicinity of the center of the connecting member to the surface of the cabinet.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a first embodiment of the speaker system according to the present invention. FIG. 3 is a longitudinal sectional view of the first embodiment of the speaker system according to the present invention. As shown in FIG. 3, the speakers 2 and 3 are arranged such that the virtual axes F1 and F2 of the speakers 2 and 3 actually have an elevation angle θ. In the speaker system 1 according to the present invention, the speakers 2 and 3 having the same characteristics face each other, and the yokes 4 and 5 of these speakers 2 and 3 are made of a highly rigid member such as iron (hereinafter referred to as a connecting member) 6. Cabinet 7
It was attached to.

On the other hand, the speakers 2,
The pattern of the magnetic flux generated in the magnets 10 and 11 is as shown in FIG. FIG. 2 is a conceptual diagram of a magnetic flux pattern of the magnets 10 and 11 of the speaker system 1.

That is, the magnetic flux M1 generated from the magnet 10 of the speaker 2 to the outside of the yoke 4 and the magnetic flux M2 generated from the magnet 11 of the speaker 3 to the outside of the yoke 5 repel each other. A magnetic flux M3 generated inside the yoke 4 from 10 and a magnetic flux M4 generated inside the yoke 5 from the magnet 11 repel each other.

Therefore, the leakage magnetic fluxes M3a and M4a leaking from inside the yokes 4 and 5 to the outside are directed in the thickness direction of the yokes 4 and 5, respectively. Can be raised.

The centers 4a. A vibration system is formed by the voice coils 12 and 13 which are vertically movablely fitted to the coil 5a, the cones 14 and 15 directly connected to the coils 12 and 13, and the dampers 16 and 17, and the yokes 4 and 5 and the magnet 10 , 11, frames 18, 19 and caps 20, 21 form a support system.

When audio signals having the same phase are input to these speakers 2 and 3, virtual axes F1 and F2 indicating the movement directions of the voice coils 12 and 13 are set in opposite directions.
In other words, the direction of mechanical equilibrium (the direction of canceling forces)
Occurs.

Therefore, in FIG.
By connecting the yokes 4 and 5 of the speaker 3 with the coupling member 6, vibrations received by the speakers 2 and 3 due to the movement of the voice coils 12 and 13 (the axes F1 and F2 in FIG.
Direction) is transmitted to the coupling member 6 and is canceled by the coupling member 6, so that the vibration is reduced. That is, to reduce the vibration, the coupling member 6 can be small, and the cabinet 7 can be reduced in weight.

FIG. 3 is a longitudinal sectional view of the first embodiment of the speaker system according to the present invention. That is, as described above, the axes F1 and F2 of the speakers 2 and 3 are each configured to have an elevation angle θ with respect to a virtual horizontal axis H on the extension of the bottom surface 7B of the cabinet. Accordingly, since the center of gravity of the speakers 2 and 3 is set at the center C of the coupling member 6, the bottom surface 6B of the coupling member 6 can be attached to the bottom surface 7B of the cabinet 7, so that the speakers 2 and 3 can be attached.
3 can be supported in a well-balanced manner.

FIG. 4 is a cross-sectional view of a second embodiment of the loudspeaker system according to the present invention. This speaker system 20
In this example, three speakers 31 to 33 having the same characteristics are connected via a connecting member 34 and attached to a cabinet 35. The axes F11 to F13 of these speakers 31 to 33 are configured to have an angle β with each other. Therefore, the vibrations that the speakers 31 to 33 receive due to the movement of the voice coil (not shown) are canceled out and weakened at the central portion C of the coupling member 34.

Further, since the speakers 31 to 33 are arranged rearwardly at the same angle β, the magnetic fluxes generated from the magnets 36 to 38 of these speakers 31 to 33 also repel each other, and The magnetic flux density can be increased by reducing the leakage magnetic flux leaking to the outside.

A vertical sectional view of the speaker system 20 is substantially the same as FIG. 3 when FIG. 4 is longitudinally sectioned along axes F11 and F12. That is, the speakers 31 to 33 are also configured to have the elevation angle θ. Therefore, similarly to the speaker system 1, the bottom surface of the coupling member 34 can be attached to the bottom surface of the cabinet 35 to support the speakers 31 to 33 in good balance.

As described above, according to the loudspeaker system according to the present invention, each loudspeaker is arranged backward so that the axes of the movement directions are equiangular on the horizontal plane and the vertical plane. Even if a small one is used, vibrations based on the movement of the vibration system can be reduced, the cabinet can be reduced in weight, leakage magnetic flux can be reduced, and only the center of the coupling member near the center is attached to the cabinet. Since the speakers can be supported, the speakers can be arranged in a well-balanced manner. Therefore, the number of materials can be reduced, which is suitable for cost reduction.

Although the present embodiment has been described with reference to the case of two or three speakers, it goes without saying that the present invention can be similarly applied to the case of four or more speakers. Further, the present invention is not limited to a combination of the same speakers, and speakers having similar characteristics, for example, 16
In the case of a combination of a cm woofer and a 20 cm woofer, the horizontal motion vectors of the speakers are balanced, that is,
Although the horizontal arrangement may not be at equal angular intervals, an effect similar to that of the first or second embodiment can be obtained.

[0024]

According to the present invention, a plurality of loudspeakers are arranged in a horizontal plane in a direction in which the axis is dynamically balanced with respect to the direction of movement of the vibration system, and these support systems are connected to each other by a member having high rigidity. Since the cabinet and the support system hardly move in response to the movement of the vibration system, a relatively small coupling member can be used, and the weight of the cabinet can be reduced.

Since the same polarity of the magnets of the vibration system are opposed to each other, the magnetic flux leakage from the yoke side can be reduced, and the magnetic flux density can be increased accordingly.

Since the axes are arranged in the vertical plane so as to have the same elevation angle with respect to the horizontal plane, the center of gravity of the whole speaker can be located at the center of the coupling member. Therefore,
The vicinity of the center of the coupling member can be attached to the surface of the cabinet, so that the entire speaker can be supported in a well-balanced manner.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first embodiment of a speaker system according to the present invention.

FIG. 2 is a conceptual diagram of a magnetic flux pattern of a magnet of the speaker according to the present invention.

FIG. 3 is a longitudinal sectional view of the first embodiment of the speaker system according to the present invention.

FIG. 4 is a cross-sectional view of a second embodiment of the speaker system according to the present invention.

FIG. 5 is a partial longitudinal sectional view of a conventional speaker resonance preventing device.

[Explanation of symbols]

1,30 ... Speaker system, 2,3,31-33 ...
Speaker, 4,5 ... yoke, 7,35 ... cabinet, 10,
11 ... magnet, 12, 13 ... voice coil, 1
4, 15: cone, 16, 17: damper, 18, 19
... frame, 20, 21 ... cap.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04R 1/40 310 H04R 9/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of loudspeakers are arranged in a horizontal plane in a direction in which axes are mechanically balanced with a direction of movement of a vibration system, and in a vertical plane, the axes have an equal elevation angle with respect to the horizontal plane. And a support system for the plurality of speakers is connected to each other by a member having high rigidity in the axial direction, and the member is mounted in a cabinet.