WO2016109974A1

WO2016109974A1 - Sound system with multiple sound tracks

Info

Publication number: WO2016109974A1
Application number: PCT/CN2015/070430
Authority: WO
Inventors: 孙悦炜
Original assignee: 深圳圣世科技有限公司
Priority date: 2015-01-09
Filing date: 2015-01-09
Publication date: 2016-07-14

Abstract

Disclosed is a sound system with multiple sound tracks, comprising two front loudspeakers, two rear loudspeakers, a middle loudspeaker and a mega bass loudspeaker; further comprising a rear sound device which can be mounted on the back of a chair, wherein the rear sound device comprises a rear loudspeaker box, a support arm and a fixing belt; the two rear loudspeakers are respectively accommodated in loudspeaker box cavities at two ends of the rear loudspeaker box, the bottom part of the rear loudspeaker box is connected to the support arm, which vertically extends downwards; and the support arm is provided with the fixing belt which can wind around the chair back and bind the support arm to the chair back so that the rear loudspeaker box is suspended above the chair back. The beneficial effects of the present invention are that the sound system can be easily placed, transported and stored, saves space and enables a user to have better audiovisual effects.

Description

Multi-channel sound system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to speaker space arrangements for stereo devices, and more particularly to speaker arrangements and devices for multi-channel system audio equipment.

BACKGROUND OF THE INVENTION Prior art multi-channel sound systems, such as cinemas or home theaters, widely use 5.1-channel multi-channel surround sound systems, including two front speakers, two rear speakers, and a center surround sound box. And a subwoofer speaker; in order to get good audio-visual effects, the principle of placement is: two front speakers should be placed in a word line to face the viewer, one left and right, one rear speaker On the left and right sides of the viewer. Now widely used 5.1-channel audio equipment, the front speakers are mostly placed directly on the table, the center speakers are also placed on the table, the rear speakers are grounded or nailed to the wall, and the physical structures of the speakers are independent of each other. The whole system is too scattered, unsightly, complicated to install, occupying a large space, and wiring troubles.

SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to design and produce a multi-channel sound system by avoiding the above-mentioned deficiencies of the prior art, and to solve the problems that the prior art speaker is unsuitable and convenient.

The technical solution proposed by the present invention to solve the above technical problem is a multi-channel sound system comprising two front speakers, two rear speakers, one center speaker and one subwoofer; a rear audio device on the back of the chair, the rear audio device includes a rear speaker, a support arm and a fixed strap; the two ends of the rear speaker are a speaker cavity for accommodating two rear speakers, The bottom of the rear speaker is connected with a vertically downward support arm; the support arm is provided with a fixing strap that can surround the seat back and bind the support arm to the back of the chair so that the rear speaker is suspended above the seat back.

An outwardly extending fixing piece is further disposed on the support arm between the rear speaker and the fixing belt, and when the fixing belt binds the supporting arm to the seat back, the fixing piece extending outward from the supporting arm is just right It is stuck on the back of the chair.

The fixing strap comprises two hinges respectively connected to the left and right sides of the support arm through a rotating shaft, and the hinges are rotatable about the connecting shaft; wherein a hinge is connected to the supporting arm side and is made of an elastic material. The elastic elastic band is provided with a buckle at the other end; and the other hinge is provided with a card hole for engaging the buckle of the elastic band.

The fixing piece is a metal piece made of an elastic metal material and having two fixing fingers; the two fixing fingers are in a U-shaped or Y-shaped structure, and when the fixing piece is stuck on the upper end of the seat back, two pieces of the fixing piece are The fixed finger is applied to the external force so that the fixed finger end is bent downward to be fastened to the seat back.

An adjustment buckle that adjusts its own length is also mounted on the elastic band.

Also included is a front audio device for placement behind the display, the front audio device comprising a base, a connecting plate and three connecting arms, the lower end of the connecting plate being tightly fitted into a card slot on the base, One end of the three connecting arms is respectively connected with a speaker that houses a front speaker and a center speaker, and the other ends of the connecting arms are respectively connected to the left and right sides and the top end of the connecting plate, and when the current audio device is placed behind the display, The speakers with the front speakers and the center speakers are suspended from the left, right and upper ends of the display. The connecting plate is a flat casing; the connecting arms include an outer arm and an inner arm of the cavity structure, and the inner arm is movably nested inside the outer arm; one end of each outer arm is embedded in the connecting plate of the flat casing a connecting portion rotatably connected to the connecting plate through a rotating shaft; the inner arm protruding from the other end of each outer arm to be connected with a corresponding front speaker or a speaker of the center speaker; applying an external force to push and pull the inner arm on the outer arm The relative position in the middle can adjust the length of the connecting arm.

The inner cavity of the inner arm is divided into two radial cavities, and a U-shaped positioning elastic piece made of an elastic metal piece is inserted into a cavity, and two open flanks of the U-shaped positioning elastic piece are inserted. Since the tension is tightly clamped in the cavity, the positioning elastic piece is further disposed on the side wing of the inner arm housing wall with an upwardly protruding button, and the button passes through the through hole in the wall of the inner arm housing and is inserted into the outer arm. One of the plurality of positioning holes arranged in sequence on the outer casing, such that the inner arm is fixed to the outer arm and cannot slide somewhere when no external force acts; the connecting wire of the front speaker or the center speaker passes through the inner arm The other cavity is collected to the connection board and connected to the power amplifier on the external subwoofer through the through hole on the connection board.

The connecting plate of the connecting plate and the connecting arm are respectively provided with a limiting groove for limiting the rotation angle of the connecting arm.

The invention has the beneficial effects that the speaker in the multi-channel sound system can be conveniently suspended near the left, right and upper ends of the display device and near the human ear on both sides, saving space; and the speaker on the front audio device is required The wires for transmitting audio signals are routed inside the front audio device, which is summarized as an exposed wire and a subwoofer. The rear audio device receives the audio signal from the subwoofer through WiFi, reducing external wiring and avoiding the messy wiring. At the same time, the front audio device can adjust the position of the speaker according to the size of different display devices. The rear audio device can be adjusted according to different chairs, sofas and the like to adapt to different placement conditions, easy to use and easy to use. Operation; each audio device of the multi-channel sound system has a folding and split structure, and the overall size is reduced after being folded and split, which is convenient for transportation and storage.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view showing the state of use of an acoustic system in a preferred embodiment of the multi-channel audio system of the present invention; FIG.

Figure 2 is a schematic projection view of the rear acoustic device 1 of the preferred embodiment;

Figure 3 is a schematic projection view of the rear side of the rear acoustic device 1 of the preferred embodiment;

Figure 4 is a schematic perspective view of the rear view of the preferred embodiment of the audio device 1 mounted on the back of the chair;

Figure 5 is a schematic perspective view showing the separated state of the components of the rear acoustic device 1 in the preferred embodiment;

Figure 6 is a schematic perspective view of the front view acoustic device 2 placed on the display screen 7 in the preferred embodiment;

Figure 7 is a schematic projection view showing the state in which the base 20 of the front audio device 2 and the connecting board 21 are separated in the preferred embodiment;

FIG. 8 is a schematic projection view showing the outer arm 221 and the inner arm 222 of the connecting arm 22 of the front audio device 2 in an exploded state according to the preferred embodiment;

Figure 9 is a front elevational cross-sectional view of a connecting arm 22 in the preferred embodiment;

Figure 10 is a partial cross-sectional view showing the axial projection of the connecting plate 21 in the preferred embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be further described in conjunction with the preferred embodiments shown in the drawings.

Referring to Figures 1 through 5, a preferred embodiment of the present invention is to produce a multi-channel sound system comprising two front speakers, two rear speakers, one center speaker and one subwoofer. a subwoofer 9; further comprising a rear audio device 1 mountable on the back of the chair, the rear audio device comprising a rear speaker 11, a support arm 12 and a fixed strap 13; the two rear speakers respectively Placed in the speaker cavity at both ends of the rear speaker 11, the bottom of the rear speaker 11 is connected to the vertically downward support arm 12; the support arm 12 is provided with a wraparound back and a support arm On the back of the chair, the rear speaker is suspended from the fixing strap 13 above the seat back.

There is also an outwardly extending fixing piece 14 on the support arm 12 between the rear speaker 11 and the fixing belt. When the fixing belt 13 binds the supporting arm 12 to the seat back, the fixing piece 14 which protrudes outward on the supporting arm Just stuck on the back of the chair. The fixing piece is a metal piece made of an elastic metal material and having two fixing fingers 141; The two fixing fingers 141 are U-shaped or Y-shaped. When the fixing piece is stuck on the upper end of the seat back, the two fixing fingers of the fixing piece are applied with a certain degree of external force, so that the fixing fingers 141 are bent downwardly and tightly. The ground is buckled on supports such as seat backs and sofa stools of different specifications. The fixing piece 14 is externally coated with a soft rubber sleeve.

Referring to FIG. 5, the fixing strap 13 includes two hinges 131 connected to the left and right sides of the support arm 12 via the rotating shaft 132, and the hinges are rotatable about the connecting shaft 132; wherein a hinge is remotely supported. The arm side is connected with a retractable elastic band 133 made of an elastic material, and the other end of the elastic band 133 is provided with a buckle 134; on the other hinge, a card for engaging the buckle of the elastic band is provided hole. An adjustment buckle 15 that adjusts its own length is also mounted on the elastic band. The adjusting buckle is a side-shaped Japanese shape, and one end of the elastic band 133 passes through the two through holes of the adjusting buckle from one end of the side of the adjusting buckle, and then passes through the hinge of the hinge connected with the elastic band 133. The hole is finally connected and fixed to the other end of the adjusting buckle side, so that the elastic band between the adjusting buckle 15 and the hinge 131 is double-layered, and the double elastic band between the adjusting buckle 15 and the hinge is adjusted by sliding. The spacing of the elastic band 133 is adjusted to adjust the overall length of the elastic band 133. The other end of the elastic band is provided with a buckle 134. The buckle 134 is provided with a barb. The hinge on the other side of the support arm 12 is provided with and with the buckle 134. The barb-fitted through hole allows the buckle 134 of the elastic band to be snapped so that the elastic band 133 can be tightly held on the seat back of different specifications.

Referring to FIG. 6 to FIG. 10, in the present example, the multi-channel sound system further includes a front audio device 2 for being placed behind the display, the front audio device 2 including a base 20, a connecting plate 21 and three The connecting arm 23, the lower end of the connecting plate 21 is tightly fitted into the slot of the base 20, and one end of the three connecting arms 22 is respectively connected to each of the speakers 4 accommodating the front speaker and the center speaker. The other ends of the connecting arms 22 are respectively connected to the left and right sides and the top end of the connecting board. When the current audio device 2 is placed behind the display 7, the two front speakers and the middle speakers with the front speakers and the center speakers are installed. The speakers are suspended from the left, right and upper ends of the display 7, respectively.

In this example, the connecting plate 21 is a flat casing; the connecting arms 22 include an outer arm 221 and an inner arm 222 of a cavity structure, and the inner arm 222 is movably nested inside the outer arm 221; One end of the arm 221 is embedded in the joint of the connecting plate 21 of the flat casing, and is rotatably connected to the connecting plate 21 through the rotating shaft; the inner arm 222 is extended from the other end of each outer arm 221, and is respectively connected to the corresponding front end. The speaker 4 of the speaker or the center speaker; the relative position of the external force pushing and pulling inner arm 222 in the outer arm 221 can adjust the length of the connecting arm 22.

Referring to FIG. 9, the inner cavity of the inner arm 222 is divided into two radial cavities, and a cavity is inserted into the cavity. a U-shaped positioning elastic piece 23 made of a metal piece, the two flared side wings of the U-shaped positioning elastic piece 23 are tightly clamped into the cavity due to the tension, and the positioning elastic piece abuts the side wing of the inner arm outer casing wall An upwardly protruding button 231 is further disposed, and the button 231 passes through a through hole in the wall of the inner arm casing, and is inserted into one of the plurality of positioning holes 2210 arranged in sequence on the outer arm housing. Therefore, when the external force is not applied, the inner arm 222 is fixed to the outer arm 221 and cannot slide somewhere. The external force can adjust the relative position of the inner arm 222 and the outer arm 221 to adjust the length of the connecting arm 22; the front speaker or The wires connected to the center speaker pass through another cavity of the inner arm, are collected at the connection plate to form the wires 6, and are connected to the power amplifier on the external subwoofer 9 through the through holes on the connection plate.

Referring to FIG. 10, the connecting plate of the connecting plate 21 and the connecting arm 22 are respectively provided with a limiting groove 210 for limiting the rotation angle of the connecting arm. The left and right connecting arms 22 of the front audio device 2 can be rotated and folded to reduce the overall size of the front audio device 2, save space, reduce the size of the package, and facilitate storage and transportation. Meanwhile, the connecting plate 21 is embedded. The card slot inserted in the base 20 can be easily and conveniently disassembled and installed, which is convenient for storage, transportation, and reduction of package size.

The front audio device 2 in this embodiment combines two front speakers and one center speaker, and is directly placed on the desktop, so that the two front speakers are hung on the left and right sides of the display device, and the center speaker is suspended. With the top of the display device. The rear audio unit 1 in this example combines two rear speakers and is fixed to the chair so that the two rear speakers are hung on both sides of the listener. In this way, the physical structure of the multi-channel sound system is divided into two parts: the front and the back. The subwoofer provides audio signals to the front and rear audio devices respectively. At the same time, the speakers on the front audio device need to transmit audio signals. The wires are wired inside the front audio device, which is summarized as an exposed wire and a subwoofer. The rear audio device receives the audio signal from the subwoofer through WiFi, reducing external wiring and avoiding the messy wiring affecting the appearance and use. At the same time, the front audio device can adjust the position of the speaker according to the size of different display devices. The rear audio device can be adjusted according to different chairs, sofas and other supports to adapt to different placement conditions, easy to use and easy to operate; At the same time, the audio devices of the multi-channel sound system also have a folding and split structure, and the overall size of the device after folding and splitting is reduced, which is convenient for transportation and storage.

Claims

A multi-channel sound system comprising two front speakers, two rear speakers, a center speaker and a subwoofer;

Also included is a rear audio device mountable on the back of the chair, the rear audio device including a rear speaker, a support arm and a strap;

The two ends of the rear speaker are a speaker cavity for accommodating two rear speakers, and the bottom of the rear speaker is connected with a vertically downward support arm; the support arm is provided with a wraparound chair Back, tie the support arm to the back of the chair, and suspend the rear speaker to the fixing strap above the seat back.
The multi-channel sound system of claim 1 wherein:

An outwardly extending fixing piece is further disposed on the support arm between the rear speaker and the fixing belt, and when the fixing belt binds the supporting arm to the seat back, the fixing piece extending outward from the supporting arm is just right It is stuck on the back of the chair.
The multi-channel sound system of claim 1 wherein:

The fixing strap includes two hinges respectively connected to the left and right sides of the support arm through a rotating shaft, and the hinges are rotatable about the connecting shaft; wherein a hinge is connected to the supporting arm side and is made of an elastic material. A telescopic elastic band, the other end of the elastic band is connected with a buckle; and the other hinge is provided with a card hole for engaging the buckle of the elastic band.
A multi-channel sound system according to claim 2, wherein:

The fixing piece is a metal piece made of an elastic metal material and having two fixing fingers; the two fixing fingers are in a U-shaped or Y-shaped structure, and when the fixing piece is stuck on the upper end of the seat back, two pieces of the fixing piece are The fixed finger is applied to the external force so that the fixed finger end is bent downward to be fastened to the seat back.
A multi-channel sound system according to claim 3, wherein:

An adjustment buckle that adjusts its own length is also mounted on the elastic band.
The multi-channel sound system of claim 1 wherein:

Also included is a front audio device for placement behind the display, the front audio device comprising a base, a connecting plate and three connecting arms, the lower end of the connecting plate being tightly fitted into a card slot on the base, One end of the three connecting arms is respectively connected with a speaker that houses a front speaker and a center speaker, and the other ends of the connecting arms are respectively connected to the left and right sides and the top end of the connecting plate, and the current audio device is placed behind the display. The speakers with the front and center speakers are just suspended from the left, right and upper ends of the display.
A multi-channel sound system according to claim 6 wherein:

The connecting plate is a flat housing;

Each connecting arm includes an outer arm and an inner arm of the cavity structure, and the inner arm is movably nested inside the outer arm; one end of each outer arm is embedded in the connection of the connecting plate of the flat housing, and is rotatably connected through the rotating shaft a connecting plate; each of the inner arms protrudes from the other end of each outer arm, and is connected with a corresponding front speaker or a speaker of the center speaker; and the external force is applied to the relative position of the inner arm in the outer arm to be adjusted The length of the connecting arm.
A multi-channel sound system according to claim 7 wherein:

The inner cavity of the inner arm is divided into two radial cavities, and a U-shaped positioning elastic piece made of an elastic metal piece is inserted into a cavity, and two open flanks of the U-shaped positioning elastic piece are inserted. Since the tension is tightly clamped in the cavity, the positioning elastic piece is further disposed on the side wing of the inner arm housing wall with an upwardly protruding button, and the button passes through the through hole in the wall of the inner arm housing and is inserted into the outer arm. One of the plurality of positioning holes arranged in sequence on the outer casing, such that the inner arm is fixed to the outer arm and cannot slide somewhere when no external force acts; the connecting wire of the front speaker or the center speaker passes through the inner arm The other cavity is collected to the connection board and connected to the power amplifier on the external subwoofer through the through hole on the connection board.
A multi-channel sound system according to claim 7 wherein:

The connecting plate of the connecting plate and the connecting arm are respectively provided with a limiting groove for limiting the rotation angle of the connecting arm.