CN107347168A - Flat panel loudspeaker - Google Patents

Abstract

The invention discloses a panel audio. The flat panel audio includes: a rear case; a vibrating plate mounted to the rear case and forming a cavity between the vibrating plate and the rear case; and a driver disposed on the vibrating plate and the cavity between the rear shell and configured to drive the vibrating plate. The driver is connected to the rear case by an elastic washer.

Description

flat panel audio

technical field

The present invention relates to a sound system, and in particular to a panel sound.

Background technique

Since the advent of flat panel audio in the 1990s, it has been loved by users for its light and unique design.

A conventional soundbar includes a rear case, a vibration plate mounted to the rear case, and a driver for driving the vibration plate. However, the driver of the conventional flat panel is directly installed to the rear case, and thus may cause resonance of the components of the flat panel, thereby affecting the sound quality of the flat panel.

Contents of the invention

The object of the present invention is to provide a flat panel audio system, which can at least partly solve the above technical problems.

According to one aspect of the present invention, a flat panel audio is provided.

According to an exemplary embodiment, the panel audio may include: a rear case; a vibration plate mounted to the rear case and forming a cavity between the vibration plate and the rear case; and a driver. A driver is disposed in the cavity between the vibrating plate and the rear case and is configured to drive the vibrating plate. The driver is connected to the rear case by an elastic washer.

According to another embodiment, the flat panel audio may further include a sound-absorbing material disposed between the vibrating plate and the housing, and an opening is provided in the sound-absorbing material, and the driver is connected to the vibrating plate through the opening. and the casing.

According to another embodiment, the rear shell is provided with at least one elongated opening.

According to another embodiment, the rear shell is provided with a plurality of elongated openings, and these openings are arranged symmetrically on both sides of the vibrator or evenly distributed around the vibrator.

According to another embodiment, at least one elongated groove is provided on the outer surface of the rear shell, and each opening is arranged in a corresponding groove.

According to another embodiment, openings are provided on the side walls of said groove.

According to another embodiment, the opening is provided on a side wall of the groove facing away from the driver.

According to another embodiment, the rear side of the rear shell is provided with a foot support connected to said rear shell and pivotable relative to said rear shell, said foot support having a non-supporting surface engaging the surface of said rear shell. state, a first support state at a first angle to the surface of the rear shell, and a second support state at a second angle to the surface of the rear shell.

According to a further embodiment, the first angle is between 20 degrees and 40 degrees, and the second angle is about 90 degrees.

According to another embodiment, the flat panel audio further includes a driving circuit, and the driving circuit includes a Bluetooth module.

According to another aspect, the driving circuit is further configured to make the flat panel audio play startup music or prompt sound when the flat panel audio is turned on.

According to another embodiment, the driver includes:

bracket;

a magnet mounted to the bracket;

a voice coil connected to the bracket by an elastic suspension; and

A cover plate is arranged at the front end of the voice coil, and the cover plate is connected to the vibration plate.

According to another embodiment, the surface of the cover plate connected to the vibrating plate includes a peripheral portion and a concave central portion, the cover plate being connected to the vibrating plate through the peripheral portion.

According to another embodiment, the flat panel audio further includes a frame, and the edge portion of the vibration plate is clamped and fixed between the frame and the rear case.

According to another aspect, the flat panel audio system may further include a first accessory, and the frame is further configured to clip and fix the first accessory to the front of the vibration plate.

According to another embodiment, the edge portion of the vibrating plate is adhesively fixed to the rear shell.

According to another embodiment, the soundbar may include a frame and a first attachment, the frame configured to fix the first attachment to the front of the vibration plate.

According to another embodiment, the cavity between the vibrating plate and the rear shell includes a first compartment and a second compartment, the driver is located in the first compartment, and the panel audio further includes a mounting A second accessory in the second compartment.

According to another embodiment, the rear case has an openable cover at a portion corresponding to the second compartment.

According to another aspect of the present invention, a flat panel audio is provided. According to an exemplary embodiment, the panel audio may include: a rear case; a vibration plate mounted to the rear case and forming a cavity between the vibration plate and the rear case; a driver, the The driver is disposed in a cavity between the vibrating plate and the rear case and is configured to drive the vibrating plate; a sound-absorbing material disposed between the vibrating plate and the rear case; and connected to the housing And a foot support capable of pivoting relative to the housing. The driver is connected to the vibration plate, and the driver is connected to the rear shell through an elastic washer; the back of the rear shell is provided with a plurality of elongated openings, and the plurality of elongated openings are symmetrically arranged on both sides of the driver; and the foot bracket has an unsupported position engaging the surface of the housing, a first supported position at a first angle with the surface of the housing, and a first supported position at a second angle with the surface of the housing Two supporting states.

Description of drawings

Preferred embodiments of the present invention will now be described by way of example with reference to the accompanying drawings, in which:

Fig. 1 schematically shows an exploded perspective view of a panel audio according to an embodiment of the present invention;

Fig. 2 schematically shows a front view of a flat panel audio according to an embodiment of the present invention;

Fig. 3 schematically shows a rear view of the panel audio in Fig. 2;

Fig. 4 schematically shows a sectional view along line A-A in Fig. 2;

Figure 5 schematically shows an enlarged sectional view along the line B-B in Figure 3; and

Fig. 6 schematically shows a cross-sectional view of the driver used in the panel audio of the present invention.

detailed description

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Like reference numerals in the drawings refer to like features. The present invention can also be implemented in other different forms, therefore the embodiments set forth herein should not be construed as limiting the present invention. These embodiments are provided so that those skilled in the art can fully and completely understand the concept of the present invention.

The directional words "upper", "lower", "left", "right", "front", "rear", etc. as used herein refer to the situation shown in the accompanying drawings and are for the purpose of convenience only The invention is described, not limited.

Fig. 1 shows an exploded perspective view of a sound panel according to an embodiment of the present invention. As shown in FIG. 1 , the flat panel stereo is generally indicated by reference numeral 100 . The panel audio 100 includes: a rear shell 12; a vibrating plate 13, the vibrating plate 13 is mounted to the rear shell 12 and forms a cavity between the vibrating plate 13 and the rear shell 12; and a driver 14, the The driver 14 is disposed in a cavity between the vibrating plate 13 and the rear case 12 and configured to drive the vibrating plate 13 . The driver 14 is connected to the vibrating plate 13 to drive the vibrating plate 13 to vibrate. The driver 14 is connected to the rear case 12 through an elastic washer 15 .

By arranging the elastic washer 15 between the driver 14 and the rear shell 12, the influence of the vibration of the driver on the components of the panel audio can be reduced when the driver is working, which is conducive to eliminating the resonance between the components of the panel audio, thereby helping to improve the performance of the panel. The sound quality of the speakers.

In practice, the material of the elastic washer 15 can be chosen to be able to provide suitable elasticity and support. For example, the elastic gasket 15 may be a silicone gasket, an EVA (ethylene-vinyl acetate copolymer) gasket or the like.

According to a further exemplary embodiment, the flat panel audio 100 further includes a sound-absorbing material 16 disposed between the vibrating plate 13 and the rear shell 12 . In non-limiting examples, the sound-absorbing material 16 may include sound-absorbing panels, sound-absorbing cotton, and the like. In order to reduce the overall weight of the flat panel audio 100, in the present invention, the sound-absorbing material 16 preferably includes a layer of sound-absorbing cotton.

When the vibrating plate 13 vibrates, it simultaneously generates sound waves propagating forward and backward, but the phases of the sound waves are opposite. Therefore, when the sound waves emitted backward by the vibration plate are reflected by the rear shell 12 and propagate toward the front of the vibration plate 13, they will at least partially cancel each other out with the sound waves emitted forward by the vibration plate, which is detrimental to the sound quality of the flat panel audio. Impact.

And by arranging the sound-absorbing material 16 on the backside of the vibrating plate 13 (that is, between the vibrating plate 15 and the rear shell 12), the sound waves generated by the vibrating plate 13 to the rear can be at least partially absorbed or eliminated, thereby helping to improve the sound quality of the panel audio system. sound quality.

In a further embodiment, in the case where the sound-absorbing material 16 is provided, an opening 151 (as shown in FIG. 1 ) may be provided on the part of the sound-absorbing material 16 corresponding to the driver 13, so that the driver 13 can pass through the opening. 151 is connected to the vibrating plate 13 and the rear case 12 .

In an exemplary embodiment, as shown in FIG. 1 , the flat panel audio system may further include a frame 11 , and an edge portion of the vibrating plate 13 may be clamped and fixed to the rear case 12 by the frame 11 . During specific implementation, the frame 11 and the rear shell 12 can respectively have joint parts that cooperate with each other, so that the frame 11 and the rear shell 12 can be combined with each other and fix the edge of the vibrating plate 13 . The form or structure of the joint portion of the frame 11 and the rear case 12 may adopt a conventional snap fit structure, or a plug-in fit structure, etc., and there is no specific limitation here.

In an alternative embodiment, the edge portion of the vibrating plate 13 can be fixed to the rear case 12 by sticking, instead of pressing the edge portion of the vibrating plate 13 onto the rear case through the frame 11 and being clamped between the frame and the rear case. between. Therefore, in this embodiment, there may be no frame 11 .

In another embodiment, even if the vibrating plate 13 is pasted to the rear case 12, the frame 11 may still be provided to provide other functions. For example, the frame 11 can be used to connect or fix other accessories (not shown) to the vibrating plate 13 . For example, said frame 11 may be a picture frame and said accessory may thus be a photograph or a picture. As another example, the frame may be a mirror frame and the accessory may thus be a mirror. For another example, the frame may be a purely decorative frame. In another example, the accessories may include various decorations, fixed or connected to the vibrating plate by a frame. In yet another example, the attachment may be affixed directly to the vibrating plate without the use of a frame.

By introducing various accessories into the panel audio of the present invention, the appearance of the panel audio can be changed according to the needs of users, which can meet the needs of users in terms of personalized customization of the panel audio.

FIG. 2 and FIG. 3 respectively show a front view and a rear view of an exemplary sound panel, and FIG. 4 schematically shows a cross-sectional view taken along line A-A in FIG. 2 . In order to further improve the sound quality of the flat panel audio, according to a further exemplary embodiment, at least one elongated opening 122 may be provided on the rear shell, as shown in FIG. 3 . By providing openings on the rear shell, the reverse sound waves emitted by the vibrating plate 13 during operation can partly pass through these openings 122 from the interior of the flat panel audio, so that the anti-phase sound waves reflected by the rear shell 12 and propagating forward are eliminated. Further reduction is conducive to further improving the sound quality of the panel audio.

In a preferred embodiment, in order to balance the sound effect, a plurality of openings 122 can be opened, and these openings are respectively arranged on two sides of the driver 14 . FIG. 3 shows four elongated openings 122 extending linearly, two of which are located on the left side of the driver, and the other two are located on the right side of the driver (refer to FIG. 1 to know the position of the driver 13 in FIG. 3 ). In other embodiments not shown, the opening 122 is not limited to the form shown in FIG. 3 . For example, two arc-shaped openings may be provided on the rear shell, respectively on both sides of the driver. For another example, four arc-shaped openings may be provided on the rear case, and these four arc-shaped openings are evenly arranged along the circumference of the same circle with the center of the driver as the center.

In order to further improve the sound quality of the panel audio, in a further exemplary embodiment, a plurality of elongated grooves may be provided on the outer surface of the rear case, and the plurality of openings 122 are respectively arranged in the corresponding grooves. By providing grooves on the outer surface of the rear case, a protrusion is formed on the inner surface of the rear case (as shown in FIG. 5 ). These protrusions make the inner surface of the back shell uneven, thereby forming irregular reflections on the inner surface of the back shell for sound waves propagating backward from the vibrating plate, so that part of the sound waves can be reflected multiple times by different parts of the back shell, and As the reflection proceeds, the energy of the sound wave is continuously attenuated, which is beneficial to improving the sound quality of the sound emitted from the flat panel.

In a further exemplary embodiment, as shown in FIG. 5 , the opening 122 is arranged on the side wall of the groove, and furthermore, the opening 122 can be arranged on the side wall of the groove far away from the driver 13 superior. By providing this configuration, at least a part of the sound waves propagating backwards emitted by the vibrating plate 13 will pass through the opening 122 provided on the side wall of the groove away from the driver 13 from the panel speaker through the complicated multiple reflection process. The rear of the 100 comes out. During this process, the sound wave energy is continuously attenuated, which is beneficial to further eliminate the noise of the panel speaker and eliminate the influence of the reverse sound wave on the sound quality of the speaker.

According to another exemplary embodiment of the present invention, as shown in FIG. 1 , a foot bracket 19 connected to the rear case 12 and capable of pivoting relative to the rear case 12 is provided on the outer side of the rear case 12 . As shown, the foot support 19 can be pivotally connected to the approximately middle position of the rear shell 12 by the pivot 20, and the foot support 19 can be configured to have an unsupported state conforming to the surface of the shell (see FIG. 4 ), a first support state at a first angle to the surface of the housing and a second support state at a second angle to the surface of the housing. For example, the first angle is 20 degrees to 40 degrees, and the second angle is about 90 degrees. As shown in FIG. 4 , it can be understood that when the foot support is in the first supporting state (for example, an angle of about 30 degrees is formed between the foot support 19 and the rear shell 12), it can support the panel audio 100 longitudinally; When the bracket is in the second supporting state (for example, the angle between the foot bracket 19 and the rear shell 12 is about 90 degrees), the flat panel audio 100 can be turned over 90 degrees as a whole, so that the foot bracket 19 can support the flat panel audio 100 laterally.

In practice, as shown in FIG. 1 , according to an exemplary embodiment, end plugs 21 may be provided at both ends of the pivot 20 between the foot bracket 19 and the rear shell 12 to keep the pivot 20 in place to prevent the pivot 20 out; in addition, according to another exemplary embodiment, a foot pad 22 may also be provided at the end of the foot support 19 .

According to an exemplary embodiment, the flat panel audio 100 further includes a driving circuit and a built-in power supply 18 , as shown in FIG. 1 , the driving circuit can be arranged on a circuit board 17 . A built-in power supply 18 is connected to the drive circuit. In an alternative embodiment, the flat panel audio may not be configured with a built-in power supply, but rely on an external power supply to work. In addition, a switch 24 connected to the circuit board 17 may also be provided on the side of the flat panel audio 100 (for example, at the edge of the rear case 12 of the casing), for controlling the opening and closing of the flat panel audio 100 . Those skilled in the art can understand that one or more switches can also be arranged in other positions of the tablet computer. For example, set in place on the rear case. In addition, a second opening 152 can also be provided at the position corresponding to the built-in power supply 18 of the sound-proof material 16, so that the built-in power supply 18 can be arranged in the second opening 152, which is beneficial to saving space and is beneficial to the flat panel audio 100. Thinning.

Further, in order to facilitate the operation of the flat panel audio, a bluetooth module (not shown in the figure) may also be provided on the circuit board or the driving circuit may include a bluetooth module. Through the Bluetooth module set in the tablet audio 100, the Bluetooth module of the mobile electronic device (such as a smart phone, tablet computer, etc.) can communicate with the Bluetooth module of the tablet audio 100, so that within a certain distance (for example. 30 meters), and the flat panel audio 100 can therefore be wireless, and can be arranged in any desired position, for example, through the hanging opening 121 opened on the rear shell 12 (see FIG. 3 ) to hang from a hook or other support provided on the wall. The built-in power supply 18 is preferably a rechargeable lithium battery, so that it can provide sufficient battery life for the flat panel audio 100 after one charge.

In an exemplary embodiment, the driving circuit can also be configured to make the flat-panel stereo play startup music or prompt sounds when the flat-panel stereo is turned on. By setting the startup music or prompt tone, the user can be clearly reminded that the flat-panel audio is already on and ready for use at any time. In addition, by setting the startup music, the user can feel happy physically and mentally.

Fig. 6 schematically shows a cross-sectional view of the driver used in the panel audio of the present invention. According to an exemplary embodiment, the driver 14 may include a bracket 141 , a magnet 142 mounted on the bracket, a voice coil 144 connected to the bracket 141 through an elastic suspension 143 , some wires 145 and the like. The basic components of these drives are known in the art and will not be described in detail here.

In a further embodiment, as shown in FIG. 6 , the driver 14 further includes a cover plate 146 disposed at the front end of the voice coil 144 , and the cover plate 146 is connected to the vibration plate 13 . For example, the cover plate 146 is substantially disc-shaped, and its diameter is about 1.2 to 2 times the diameter of the voice coil to sufficiently contact the vibration plate 13 and drive the vibration plate 13 more balanced.

According to a further exemplary embodiment, in order to maintain good vibration characteristics of the vibration plate 13, the cover plate 146 can be configured such that the surface of the cover plate 146 connected with the vibration plate 13 includes an outer peripheral portion 1461 and a concave central portion 1462, so that The cover plate is connected to the vibrating plate 13 through the peripheral portion 1461, as shown in FIG. 6 .

In addition, referring to FIG. 4 , the cavity between the vibrating plate 13 and the rear shell 12 includes a first compartment 123 and a second compartment 124 , and the driver 14 is located in the first compartment 123 . In a further embodiment, the flat panel audio 100 further includes a second accessory (not shown in the figure) installed in the second compartment 124 . In order to conveniently install the second accessory into the second compartment 124 , the rear case 12 has an openable cover 23 (see FIG. 1 ) at a portion corresponding to the second compartment.

The vibrating plate 13 according to the present invention can be made of various known materials, for example, speaker paper, plastic board, fiber board and the like. When the vibrating plate 13 is made of a transparent or at least translucent material, the second appendage on the back side of the vibrating plate 13 can be observed through the vibrating plate 13 . According to an exemplary embodiment, the second accessory can be, for example, an electronic clock, therefore, the flat panel audio according to the present invention can also be used as a clock. In addition, the second accessory can also be LED lights of various shapes, so as to provide lighting effects for the flat panel audio.

Various improvements of the flat panel audio system of the present invention have been described in detail above with reference to the accompanying drawings. Those skilled in the art can understand that when actually implementing the technical solution of the present invention, all the above-mentioned improvements do not have to be included in the same flat panel audio at the same time. The actual flat panel audio may only include the improvement of one aspect or a combination of improvements in several aspects.

For example, according to an exemplary embodiment, as shown in FIG. 1 , the flat panel audio 100 may include: a rear shell 12 ; A cavity is formed between the rear shell 12; the driver 14 is arranged in the cavity between the vibration plate 13 and the rear shell 12 and is configured to drive the vibration plate 13; a sound absorbing material 16 between the vibrating plate 13 and the rear case 12; and a foot bracket 19 connected to the case and capable of pivoting relative to the case. The driver 14 is connected to the vibrating plate 13, and the driver 14 is connected to the rear shell 12 through an elastic washer 15; the back of the rear shell 12 is provided with a plurality of elongated openings 122, and the plurality of thin The long opening 122 is symmetrically arranged on both sides of the driver 14; and the foot support 19 has a non-supporting state attached to the surface of the shell, a first supporting state at a first angle with the surface of the shell, and A second support state at a second angle to the surface of the housing.

Although a number of exemplary embodiments have been shown and described with reference to the drawings, those skilled in the art will appreciate that various modifications and changes can be made to these embodiments without departing from the principles and spirit of the invention. Therefore, the scope of the present invention should be defined by the appended claims and their equivalents.

Claims (20)

1. A flat panel sound, comprising:

a rear housing;

a vibration plate mounted to the rear case and forming a cavity therebetween; and

a driver disposed in a cavity between the vibration plate and the rear case and configured to drive the vibration plate,

wherein the driver is connected to the rear case by an elastic washer.

2. The flat panel sound of claim 1, further comprising a sound absorbing material disposed between the vibration plate and the rear case, and wherein an opening is provided in the sound absorbing material through which the driver is connected to the vibration plate and the rear case.

3. The flat panel sound of claim 1, wherein the back shell is provided with at least one elongated opening.

4. The flat panel sound of claim 3, wherein the back shell is provided with a plurality of elongated openings symmetrically disposed on both sides of the vibrator or evenly distributed around the vibrator.

5. A flat panel sound according to claim 3, wherein the back of the back shell has at least one elongate recess in its outer surface, each opening being provided in a respective recess.

6. The flat panel sound of claim 5, wherein the opening is provided on a sidewall of the recess.

7. The flat panel sound of claim 6, wherein the opening is provided on a side wall of the recess remote from the driver.

8. Flat sound according to any of claims 1-7, wherein the back side of the back shell is provided with a foot support connected to the back shell and pivotable relative to the back shell, the foot support having an unsupported state in which it abuts the surface of the back shell, a first supported state in which it is at a first angle to the surface of the back shell and a second supported state in which it is at a second angle to the surface of the back shell.

9. The flat panel sound of claim 8, wherein the first angle is 20 degrees to 40 degrees and the second angle is about 90 degrees.

10. The flat panel sound of any of claims 1-7, further comprising a driver circuit, the driver circuit comprising a Bluetooth module.

11. The flat panel sound of claim 10, wherein the drive circuit is further configured to cause the flat panel sound to play power-on music or an alert tone when the flat panel sound is powered on.

12. Flat sound according to any of claims 1-7, wherein the driver comprises:

a support;

a magnet mounted to the bracket;

a voice coil connected to the support by a resilient suspension; and

and a cover plate disposed at a front end of the voice coil, the cover plate being connected to the vibration plate.

13. The flat sound according to claim 12, wherein the surface of the cover plate connected to the vibration plate includes an outer peripheral portion through which the cover plate is connected to the vibration plate and a recessed central portion.

14. The flat panel sound according to any one of claims 1 to 7, further comprising a frame, wherein an edge portion of the vibration plate is sandwiched and fixed between the frame and a rear case.

15. The flat panel sound of claim 14, further comprising a first attachment, the frame further configured to clip the first attachment to the front of the diaphragm.

16. The flat panel sound according to any one of claims 1 to 7, wherein an edge portion of the vibration plate is adhesively fixed to the rear case.

17. The flat panel sound of claim 16, further comprising a frame and a first attachment, the frame configured to secure the first attachment to the front of the diaphragm.

18. The flat panel sound of any of claims 1-7, wherein the cavity between the vibrating plate and the back shell comprises a first compartment and a second compartment, the driver being located in the first compartment, and the flat panel sound further comprises a second accessory mounted in the second compartment.

19. The flat sound of claim 18, wherein the back shell further has an openable lid at a portion corresponding to the second compartment.

20. A flat panel sound, comprising:

a rear housing;

a vibration plate mounted to the rear case and forming a cavity therebetween;

a driver disposed in a cavity between the vibration plate and the rear case and configured to drive the vibration plate;

a sound absorbing material disposed between the vibration plate and the rear case; and

a foot bracket connected to the housing and pivotable relative to the housing,

wherein,

the driver is connected to the vibration plate, and the driver is connected to the rear case through an elastic washer;

the back of the rear shell is provided with a plurality of elongated openings which are symmetrically arranged at two sides of the driver; and is

The foot rest has an unsupported state in which it conforms to the surface of the shell, a first supported state in which it forms a first angle with the surface of the shell, and a second supported state in which it forms a second angle with the surface of the shell.