CN210381273U - Cover plate and sound box - Google Patents

Abstract

The utility model relates to an apron and stereo set, be provided with the sound blocking area on the apron, the sound blocking area sets up to the enclosed construction, the apron has been seted up and has been led the sound groove, lead the sound groove and run through the apron sets up, lead the sound groove around in the sound blocking area sets up. The sound shielding area is used for aligning to the middle of the loudspeaker, the edge of the vibrating diaphragm of the loudspeaker is low-frequency sound when the loudspeaker produces sound, and the middle of the vibrating diaphragm of the loudspeaker is high-frequency sound, so that the high-frequency sound emitted by the loudspeaker can be shielded by the sound shielding area when the sound shielding area aligns to the middle of the loudspeaker, and the high-frequency sound passing through the cover plate is reduced.

Description

Cover plate and sound box

Technical Field

The utility model relates to a stereo set technical field especially relates to apron and stereo set.

Background

The sound refers to a device capable of converting an audio signal into sound, and the sound of the device has a speaker, and when the speaker emits sound, the speaker contains high-frequency sound and low-frequency sound, and in some cases, the high-frequency sound is noise, which affects the sound quality of the whole speaker, so that the high-frequency sound needs to be processed.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a cover plate and a sound.

The utility model provides an apron, be provided with the sound blocking area on the apron, the sound blocking area is the enclosed construction, the sound guiding groove has been seted up to the apron, the sound guiding groove runs through the apron sets up, the sound guiding groove at least part around in the sound blocking area sets up, the apron size is used for matching into wall formula standard panel structure setting.

The cover plate is used for aligning to the middle of the loudspeaker, specifically, the sound shielding area is used for aligning to the middle of the vibrating diaphragm of the loudspeaker, when the loudspeaker produces sound, the edge of the vibrating diaphragm of the loudspeaker is low-frequency sound, and the middle of the vibrating diaphragm of the loudspeaker is high-frequency sound, so that when the sound shielding area aligns to the middle of the loudspeaker, the high-frequency sound emitted by the loudspeaker can be shielded by the sound shielding area, and the high-frequency sound passing through the cover plate is reduced.

In one embodiment, the cross-sectional shape of the sound guide groove is circular arc, and the circular arc center of the sound guide groove is located on the sound shielding area.

In one embodiment, the number of the sound guide grooves is multiple.

In one embodiment, a plurality of the sound guiding grooves are arranged in an array on a circular path, and the arc centers of the sound guiding grooves are arranged in a superposition manner.

In one embodiment, the arc centers of the sound guide grooves coincide, and the arc radius of each sound guide groove is different from the arc radius of the sound guide groove.

In one embodiment, the plurality of sound guiding grooves include a plurality of first sound guiding grooves and a plurality of second sound guiding grooves, each of the first sound guiding grooves is arranged in an array on a circular path, the arc centers of the first sound guiding grooves coincide with each other, each of the second sound guiding grooves is arranged in an array on another circular path, the arc centers of the second sound guiding grooves coincide with each other, the arc centers of the first sound guiding grooves and the arc centers of the second sound guiding grooves coincide with each other, and the arc radii of the first sound guiding grooves and the second sound guiding grooves are different.

In one embodiment, the sound guide groove is in a shape of a long strip, a circle or an ellipse.

In one embodiment, each of the sound guide grooves is divided into at least two groups of sound guide structures, each group of sound guide structures is arranged to form a discontinuous circle, and each group of sound guide structures is arranged to form a discontinuous concentric circle.

A sound box comprises a loudspeaker and a rear cover, wherein the loudspeaker is provided with a vibrating diaphragm, the sound box further comprises a cover plate in any one of the above embodiments, the cover plate is connected with the rear cover, an installation cavity is formed between the cover plate and the rear cover, a sound guide groove is communicated with the installation cavity, the loudspeaker is arranged in the installation cavity, and the middle of the vibrating diaphragm is aligned to the sound shielding area.

In one embodiment, the cross-sectional area of the sound guide groove is 15% to 30% of the cross-sectional area of the diaphragm.

Drawings

FIG. 1 is a schematic view of a cover plate according to an embodiment;

FIG. 2 is a schematic perspective view of a cover plate according to another embodiment;

fig. 3 is a schematic view of a stereo split structure of a sound box according to an embodiment;

fig. 4 is a schematic perspective view of a sound box according to an embodiment.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and fig. 2, in one embodiment, a cover plate 100 is provided, a sound-shielding region 110 is disposed on the cover plate 100, the sound-shielding region 110 is configured as a closed structure, a sound guiding groove 101 is disposed on the cover plate 100, the sound guiding groove 101 is disposed through the cover plate 100, and the sound guiding groove 101 is disposed around the sound-shielding region 110; the cover plate is sized to match the in-wall standard panel structure setting. In this embodiment, the sound-shielding region 110 is a solid structure, that is, the sound-shielding region 110 is not provided with a through hole, the sound-shielding region 110 is configured to align with the middle of the speaker 300, and specifically, the sound-shielding region 110 is configured to align with the middle of a diaphragm in the speaker 300. Specifically, the cover plate is provided with a first surface and a second surface which are arranged in an opposite mode, and the sound guide groove penetrates through the first surface and the second surface of the cover plate.

It is worth mentioning that the wall-in type standard panel structure includes 146 type, 120 type, 118 type, 86 type and 75 type, it should be understood that the standard panel size of the above types is regulated by the country, and the cover plate in the present embodiment is used to match the wall-in type standard panel structure of the above types.

Referring to fig. 1 and 2, in the cover plate 100, the sound-shielding region 110 is disposed in alignment with the middle of the speaker 300, when the speaker 300 generates sound, the edge of the diaphragm of the speaker 300 is low-frequency sound, and the middle of the diaphragm of the speaker 300 is high-frequency sound, so that when the sound-shielding region 110 is aligned with the middle of the speaker 300, the high-frequency sound generated by the speaker 300 can be shielded by the sound-shielding region 110, and thus the high-frequency sound passing through the cover plate 100 is reduced.

It should be understood that the material of the cover plate may be plastic, or alloy, metal, etc., and in one embodiment, the cover plate is integrally formed, so that there is no gap in the cover plate, and sound is prevented from passing through the gap of the cover plate, thereby preventing the sound quality of the speaker from being affected.

In order to realize the function that the sound guide groove can pass through sound, in one embodiment, the shape of the sound guide groove is a strip shape, a circle shape or an oval shape. In one embodiment, the sound guide groove is in a long strip shape. In one embodiment, the shape of the sound guide groove is circular. In one embodiment, the shape of the sound guide groove is an ellipse.

In order to make the sound volume of the speaker passing through the cover plate larger, as shown in fig. 1 and 2, in one embodiment, the cross-sectional shape of the sound guiding groove 101 is a circular arc, and the center of the circular arc of the sound guiding groove 101 is located on the sound shielding area 110. In the case where the width of the sound guide groove 101 is fixed, the plurality of sound guide grooves 101 have a larger sound guide area, so that the sound volume when the speaker 300 passes through the cover plate 100 is larger. In addition, since the arc-shaped sound guide groove 101 has a larger sound guide area, it is possible to reduce interference with the sound of the speaker 300, and to make the sound of the speaker 300 more fidelity.

In order to make the sound volume of the speaker passing through the cover plate larger or more rigid, as shown in fig. 1 and 2, in one embodiment, the number of the sound guide grooves 101 is plural, and in the case that the sectional area of the sound guide groove 101 is fixed, the plural sound guide grooves 101 have a larger sound guide area, so that the sound volume of the speaker 300 passing through the cover plate 100 is larger. In addition, under the condition of equal sound guide areas, compared with the single sound guide groove 101, the sound guide grooves 101 have a solid structure, so that the cover plate 100 has better rigidity.

In order to make the sound output effect better, in one embodiment, a plurality of the sound guide grooves are arranged in an array on a circular path, and the arc centers of the sound guide grooves are arranged in a superposition manner. In this embodiment, the radius of the circular path is the same as the radius of the arc of the sound guide groove, specifically, the sound guide groove extends on the plane where the cover plate is located to form an arc, and the center line of the arc coincides with the circular path. The plurality of arc-shaped sound guide grooves are gathered on the arc path, so that the sound guide grooves can be approximately formed to be close to the circular ring-shaped grooves, and the arc path is provided, so that the sound guide grooves are more uniform in structure, namely, the distance from the middle part of the loudspeaker to each sound guide groove is the same, the risk that high-frequency sound bypasses a sound shielding area is reduced, and the sound outlet effect is better. As shown in fig. 1 and 2, in one embodiment, the number of the sound guiding grooves 101 arranged in an array on a circular path is three, so that the sound guiding grooves 101 have a better sound outputting effect on one hand, and the cover plate 100 has a better strength on the other hand.

In order to increase the sound throughput of the cover plate, as shown in fig. 1 and 2, in one embodiment, the arc centers of a plurality of the sound guide grooves 101 coincide with each other, and the arc radius of each of the sound guide grooves 101 is different from the arc radius of the sound guide groove 101. In this embodiment, the plurality of sound guiding grooves 101 are arranged in an outward direction from the sound shielding region 110 of the cover plate 100, so that the plurality of sound guiding grooves 101 have a larger sound emitting area, and the sound throughput of the cover plate 100 is larger. As shown in fig. 1 and 2, in one embodiment, the arc length of the sound guide groove 101 near the sound shielding region 110 is smaller than that of the sound guide groove 101 far from the sound shielding region 110, so as to allow sound to pass better at a position far from the sound shielding region 110, and allow less sound to pass at a position near the sound shielding region 110, so that the passing of high frequency sound can be reduced at the position of the sound shielding region 110, and low frequency sound can pass better at a position far from the sound shielding region 110, so as to increase the sound throughput of the whole cover plate 100.

In one embodiment, the number of the sound guiding grooves is gradually increased from a position close to the sound shielding area to a position far away from the sound shielding area, so that sound can better pass through the sound guiding grooves at the position far away from the sound shielding area, less sound can pass through the sound guiding grooves at the position close to the sound shielding area, high-frequency sound passing can be reduced at the position of the sound shielding area, low-frequency sound can better pass through the sound guiding grooves at the position far away from the sound shielding area, and therefore the sound passing amount of the whole cover plate is larger.

In order to make the sound output more effective, as shown in fig. 1 and fig. 2, in one embodiment, the sound guide grooves 101 are uniformly spaced. That is, the distance between two sound guide grooves is the same, so that the cover plate 100 can have certain strength, and sound can more uniformly pass through the cover plate through the sound guide grooves 101, so that the sound output effect is better.

In order to improve sound output, as shown in fig. 2, in one embodiment, the plurality of sound guiding grooves 101 includes a plurality of first sound guiding grooves 102 and a plurality of second sound guiding grooves 103, each of the first sound guiding grooves 102 is arranged in an array on a circular path, arc centers of the first sound guiding grooves 102 are overlapped, each of the second sound guiding grooves 103 is arranged in an array on another circular path, arc centers of the second sound guiding grooves 103 are overlapped, arc centers of the first sound guiding grooves 102 and arc centers of the second sound guiding grooves 103 are overlapped, and arc radii of the first sound guiding grooves 102 and the second sound guiding grooves 103 are different. In this embodiment, a plurality of first sound guiding grooves 102 are formed on one circular arc path, a plurality of second sound guiding grooves 103 are formed on the other circular arc path, and the plurality of first sound guiding grooves 102 and the plurality of second sound guiding grooves 103 enable sound of the speaker 300 to more uniformly pass through the cover plate 100, so that a sound output effect is better. In this embodiment, the plurality of sound guiding grooves 101 includes a plurality of third sound guiding grooves 104, the third sound guiding grooves 104 are arranged in an array on a circular path, the arc centers of the third sound guiding grooves 104 are overlapped, and the arc radii of the first sound guiding groove 102, the second sound guiding groove 103, and the third sound guiding grooves 104 are different. It should be noted that the sound guiding grooves may further include a fourth sound guiding groove, a fifth sound guiding groove, a sixth sound guiding groove, and the like disposed along the sound shielding region in the outward direction, and this embodiment is not described redundantly.

To better shield high frequency tones, the cross-sectional shape of the sound-shielding region 110 is circular in one embodiment, as shown in fig. 1 and 2. Because the distance from the circle center to the edge of the circle is equal, the distance that the high-frequency sound in the middle of the diaphragm bypasses the sound shielding area 110 is the same, and therefore, the high-frequency sound can be better shielded under the condition that the cross-sectional areas are equal, and the sound output effect is better.

In order to make the sound output more uniform, in one embodiment, each sound guiding groove is divided into at least two groups of sound guiding structures, each group of sound guiding structures are arranged to form a discontinuous circle, and each group of sound guiding structures are arranged to form a discontinuous concentric circle, so that the sound can uniformly penetrate through each sound guiding structure, and the sound output is more uniform. In the present embodiment, each sound guiding structure is used for passing through sound, and it should be understood that the sound guiding structure in the present embodiment may be the first sound guiding groove, the second sound guiding groove and the third sound guiding groove.

In one embodiment, as shown in fig. 3 and 4, an acoustic device is provided, which includes a speaker 300 and a back cover 400, where the speaker 300 has a diaphragm 310, and further includes a cover plate 100 as described in any one of the above embodiments, where the cover plate 100 is connected to the back cover 400, a mounting cavity 401 is formed between the cover plate 100 and the back cover 400, the sound guide groove 101 is communicated with the mounting cavity 401, the speaker 300 is disposed in the mounting cavity 401, and a middle portion of the diaphragm 310 is disposed in alignment with the sound-shielding region 110. In this embodiment, when the speaker 300 generates sound, the edge of the diaphragm 310 of the speaker 300 is low-frequency sound, and the middle of the diaphragm 310 of the speaker 300 is high-frequency sound, so that the sound-shielding region 110 corresponds to the middle of the speaker 300, and the high-frequency sound generated by the speaker 300 can be shielded by the sound-shielding region 110, so that the high-frequency sound passing through the cover plate 100 is reduced.

In order to improve the sound output effect, in one embodiment, the cross-sectional area of the sound guide groove is 15% to 30% of the cross-sectional area of the diaphragm. The bigger the sound-emitting area of the sound-guiding groove is, the lower the strength of the cover plate is easily caused, and the too small sound-emitting area of the sound-guiding groove easily causes poor sound quality.

In one embodiment, as shown in fig. 3 and 4, an acoustic structure includes a panel 200, a rear case 400, a speaker 300, and the cover plate 100 in any one of the embodiments, where the cover plate 100 is connected to the rear case 400, an installation cavity 401 is formed between the cover plate 100 and the rear case 400, the speaker 300 is disposed in the installation cavity 401, the cover plate 100 and the panel 200 are disposed at an interval, the cover plate 100 and the panel 200 form a buffer cavity 210, an edge of the cover plate 100 is connected to an edge of the panel 200, the cover plate 100 is disposed with a sound guiding groove 101, the panel 200 is disposed with a sound outlet groove 201, and the sound guiding groove 101 and the sound outlet groove 201 are disposed correspondingly.

In the sound structure, when the sound of the speaker 300 passes through the cover plate 100 through the sound guide groove 101, the sound may form multi-angle reflection between the cover plate 100 and the panel 200, so that the sound is softer, and the sound quality of the speaker 300 is improved. That is to say, apron 100 among the prior art can make speaker 300's tone quality descend, after having adopted the technical scheme of this application, can avoid influencing speaker 300's tone quality, and can promote speaker 300's tone quality for the sound effect of sound structure is better. In addition, because a buffer chamber 210 is formed between the cover plate 100 and the panel 200, when the sound of the speaker 300 passes through the cover plate 100 and the panel 200, the cover plate 100 and the panel 200 can vibrate, the buffer chamber 210 can provide a vibrating space between the middle of the cover plate 100 and the middle of the panel 200, and the middle of the cover plate 100 and the middle of the panel 200 can be prevented from colliding, thereby preventing the collision from generating noise, thus on the one hand, the tone quality of the speaker 300 is improved through the cover plate 100 and the panel 200, on the other hand, the collision between the cover plate 100 and the panel 200 is prevented from generating noise, thereby preventing the tone quality of the speaker 300 from being influenced, and further, the.

In order to connect the edge of the cover plate with the edge of the panel, as shown in fig. 2, in one embodiment, a connecting portion 120 is convexly disposed on a surface of the cover plate 100 facing the panel 200, the connecting portion 120 is disposed at the edge of the cover plate 100, and the connecting portion 120 is connected with the edge of the panel 200, so that the edge of the cover plate 100 is connected with the edge of the panel 200. In this embodiment, the connecting portion 120 is used to make the middle of the panel 200 far away from the middle of the cover plate 100, so as to form a buffer cavity 210 between the cover plate 100 and the panel 200, and thus, the connection between the edge of the cover plate 100 and the edge of the panel 200 can be realized. In one embodiment, a fixing portion is convexly disposed on a surface of the panel 200 facing the cover plate 100, the fixing portion is disposed on an edge of the panel 200, and the fixing portion is connected to the edge of the cover plate 100, so that the edge of the cover plate 100 is connected to the edge of the panel 200.

In order to make the connection between the cover plate and the panel more tight, as shown in fig. 2, in one embodiment, the cross-sectional shape of the connecting portion 120 is annular, the sound guide groove 101 of the cover plate 100 is disposed on the inner side of the connecting portion 120, and the connecting portion 120 is disposed annularly, so that the area of contact between the connecting portion 120 and the panel 200 is larger, and the larger the area of contact, the connecting portion 120 can better provide a supporting force for the panel 200, so that the connection between the connecting portion 120 and the panel 200 is more tight. In one embodiment, the cross-sectional shape of the connecting portion 120 is a circular ring, so that the connecting portion 120 is annularly disposed, and the circular ring has a larger area than other rings under the same circumference, so as to better accommodate the sound guide groove 101 therein, and save the manufacturing material of the connecting portion 120. In one embodiment, the cross-sectional shape of the connecting portion 120 is a square ring, so that the connecting portion 120 is disposed in a ring shape. In one embodiment, the cross-sectional shape of the connecting portion 120 is a triangular ring shape, so that the connecting portion 120 is annularly disposed.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides an apron, its characterized in that, be provided with the sound-proof area on the apron, the sound-proof area is the enclosed construction, the sound guide groove has been seted up to the apron, the sound guide groove runs through the apron sets up, the sound guide groove at least part around in the sound-proof area sets up, the apron size is used for matching the wall-entering formula standard panel structure setting.

2. The cover plate according to claim 1, wherein the sound guide groove has a circular arc-shaped cross-section, and the center of the circular arc of the sound guide groove is located on the sound-shielding region.

3. The cover plate according to claim 2, wherein the number of the sound guide grooves is plural.

4. The cover plate according to claim 3, wherein a plurality of the sound-guiding grooves are arranged in an array on a circular path, and the centers of the circular arcs of the sound-guiding grooves are coincident.

5. The cover plate according to claim 3, wherein the arc centers of the plurality of sound guide grooves coincide with each other, and the arc radius of each of the sound guide grooves is different from the arc radius of the sound guide groove.

6. The cover plate according to claim 3, wherein the plurality of sound guide grooves include a plurality of first sound guide grooves and a plurality of second sound guide grooves, each of the first sound guide grooves is arranged in an array on a circular path, the arc centers of the first sound guide grooves are arranged in a coincidence manner, each of the second sound guide grooves is arranged in an array on another circular path, the arc centers of the second sound guide grooves are arranged in a coincidence manner, the arc centers of the first sound guide grooves and the arc centers of the second sound guide grooves are arranged in a coincidence manner, and the arc radii of the first sound guide grooves and the second sound guide grooves are arranged in a different manner.

7. The cover plate according to claim 1, wherein the shape of the sound guide groove is a long strip, a circle or an ellipse.

8. The cover plate according to claim 1, wherein each of the sound guide grooves is divided into at least two sets of sound guide structures, each set of sound guide structures is arranged to form a discontinuous circle, and each set of sound guide structures is arranged to form a discontinuous concentric circle.

9. A sound box, comprising a loudspeaker and a back cover, wherein the loudspeaker is provided with a vibrating diaphragm, and the sound box is characterized by further comprising a cover plate according to any one of claims 1 to 8, the cover plate is connected with the back cover, an installation cavity is formed between the cover plate and the back cover, the sound guide groove is communicated with the installation cavity, the loudspeaker is arranged in the installation cavity, and the middle part of the vibrating diaphragm is aligned with the sound shielding area.

10. The loudspeaker of claim 9, wherein the cross-sectional area of the sound guide groove is 15% to 30% of the cross-sectional area of the diaphragm.

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