Bass loudspeaker cover

Abstract

The utility model relates to the field of automotive interiors, in particular to a woofer cover, which comprises an inner cover, an outer cover and shielding cloth positioned between the inner cover and the outer cover, the outer cover is covered on the inner cover, a plurality of annular ribs are arranged on the inner cover, the annular ribs are mutually sleeved, the inner side of the annular rib on the innermost layer is a hollow area, and a support structure is arranged at the hollow area. According to the scheme, the problem that vibration sound and abnormal sound are generated due to the fact that the outer cover collides with the non-woven fabric when the loudspeaker in the prior art emits low-frequency-band sound waves is solved.

Description

Technical Field

[0001] The utility model relates to the field of automobile interior decoration, in particular to a bass speaker cover. Background Art

[0002] Nowadays, speakers are installed on car door panels for entertainment of drivers and passengers. However, the speakers cannot be exposed to the outside, so speaker covers are installed on the door panels to cover and protect the speakers. The speaker covers protect the speakers from damage by the external environment, have a certain aesthetic effect, and can improve the sound propagation effect.

[0003] The current speaker cover includes an inner cover (the existing inner cover is as follows Figure 1 As shown, a relatively large hollow area 41 is provided in the middle of the inner cover, and an annular rib 4) and an outer cover are provided around the hollow area, and a non-woven fabric is provided between the inner cover and the outer cover. The outer cover is covered on the inner cover, and the non-woven fabric is located between the inner cover and the outer cover. After the speaker cover covers the speaker, the outer cover is exposed to the outside, which mainly serves the purpose of aesthetics. Some sound-transmitting holes are provided on the outer cover, which is conducive to the propagation of sound, and the non-woven fabric plays a role in shielding the inner cover and the speaker, which can prevent people from seeing the inner cover and the speaker and other structures through the sound-transmitting holes, thereby improving the aesthetics.

[0004] However, for some high-end models, the outer cover is made of metal, but the speaker cover is affected by the assembly and fixation of the clips. During assembly, the deformation of the outer cover will exceed 0.2mm. In this way, when the middle part of the outer cover is deformed, the gap between the outer cover and the non-woven fabric becomes larger. When the speaker emits low-frequency sound waves, the outer cover collides with the non-woven fabric to produce a vibration sound, which has an obvious abnormal sound and greatly reduces the user experience. Utility Model Content

[0005] The utility model aims to provide a bass speaker cover to solve the problem in the prior art that when the speaker emits low-frequency sound waves, the middle part of the outer cover collides with non-woven fabric to generate vibration sound and abnormal sound.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a bass speaker cover, comprising an inner cover, an outer cover and a shielding cloth located between the inner cover and the outer cover, the outer cover covers the inner cover, the inner cover is provided with multiple layers of annular ribs, the multiple layers of annular ribs are mutually nested, the inner side of the innermost layer of annular ribs is a hollow area, and a supporting structure is provided in the hollow area.

[0007] After the inventor discovered the technical problems in the background technology, he analyzed the causes and believed that the reason why the abnormal noise occurs in the prior art is that the area of ​​the hollow area inside the innermost annular rib in the middle of the inner cover is large, and there is no structure in the hollow area to support the middle part of the outer cover. In this way, the strength of the middle part of the outer cover is greatly reduced, and the middle part of the outer cover is prone to deformation, which makes the gap between the middle part of the outer cover and the non-woven fabric larger, thereby causing the problem of abnormal noise.

[0008] To this end, the inventors set up a supporting structure in the hollow area, which supports the middle part of the outer cover, so that when the speaker cover is installed, the middle part of the outer cover is not easily deformed under the support of the supporting structure. In this way, no large gap will be generated between the middle part of the outer cover and the shielding cloth, and the shielding cloth and the middle part of the outer cover can be in contact with each other, thereby avoiding the vibration sound caused by the collision between the outer cover and the non-woven fabric when the speaker emits low-frequency sound waves, eliminating low-frequency resonance, and solving the abnormal sound.

[0009] In addition, the shielding cloth in the middle of the outer cover is clamped by the supporting structure and the outer cover, so that the shielding cloth here is fixed and not easy to shake under the joint clamping of the supporting structure and the outer cover, thereby avoiding abnormal noise caused by the shielding cloth vibrating and colliding with the middle of the outer cover.

[0010] Preferably, as an improvement, the support structure includes a plurality of support ribs. Thus, the support for the middle part of the outer cover and the pressing of the shielding cloth at the middle part of the outer cover to the middle part of the outer cover are achieved through the plurality of support ribs.

[0011] Preferably, as an improvement, a plurality of support ribs are cross-connected. The plurality of support ribs are cross-connected, thereby improving the structural strength of the support ribs.

[0012] Preferably, as an improvement, the support structure further includes a support portion, and two ends of the support rib are respectively connected to the support portion and the inner wall of the hollow area.

[0013] Therefore, the support structure may not only include support ribs, but also be provided with support parts, which are connected with a plurality of support ribs, thereby improving the structural strength of the support structure.

[0014] Preferably, as an improvement, the support portion is annular, circular, triangular or square.

[0015] Preferably, as an improvement, the supporting structure is a disc, the disc is fixedly connected to the innermost annular rib, and a plurality of through holes are provided on the disc.

[0016] Therefore, the support structure uses a disc, which blocks the hollow area. Compared with the support structure directly using support ribs, there is still a gap between adjacent support ribs, and the middle part of the outer cover will still deform at the gap. In this solution, the disc will not have the problem of gaps between adjacent support ribs. Compared with the support ribs, the disc has a larger projected area on the outer cover, so it can provide all-round support to the middle part of the outer cover, comprehensively improving the strength of the middle part of the outer cover, and the middle part of the outer cover is less likely to deform. At the same time, the inner cover and the outer cover are buckled together. Compared with the support ribs, the disc is pressed on the shielding cloth, and the shielding cloth in the middle part of the outer cover is better clamped and pressed by the support structure.

[0017] In this solution, the through holes on the disc are used to allow sound to propagate through the air, thereby preventing the disc from hindering the propagation of sound.

[0018] Preferably, as an improvement, the shielding cloth is a mesh cloth, and the mesh cloth is made of PET.

[0019] In addition, after analysis, the inventor found that the reason why the problems in the prior art exist in the background technology is also related to the material of the shielding cloth. The shielding cloth in the prior art is non-woven fabric, and the non-woven fabric is not soft. When the speaker emits low-frequency sound waves, the non-woven fabric vibrates and collides with the metal cover to produce obvious vibration sound.

[0020] In the present solution, the inventor uses mesh cloth made of PET material instead of non-woven fabric. The mesh cloth made of PET material is softer than non-woven fabric. The shielding cloth made of such soft material is not easy to produce obvious collision sound with the outer cover, which is helpful to solve the problem of abnormal noise.

[0021] In addition, the mesh cloth made of PET material also has good sound transmittance.

[0022] Preferably, as an improvement, the thickness of the mesh cloth is 0.4-0.6 mm, and the thickness of the mesh cloth is greater than the gap between the inner cover and the outer cover for accommodating the mesh cloth.

[0023] The non-woven fabric in the prior art is relatively thin, so there will be a gap between the non-woven fabric and the outer cover. In this solution, the thickness of the mesh cloth is controlled to 0.4-0.6mm. Compared with the prior art, the thickness of the shielding cloth is increased. In this way, when the mesh is arranged between the inner cover and the outer cover, the two sides of the mesh cloth are closely attached to the inner and outer covers respectively, which is conducive to reducing the gap between the mesh cloth and the outer cover and reducing vibration and abnormal noise.

[0024] Preferably, as an improvement, the diameter of the innermost annular rib is 25-35 mm.

[0025] Preferably, as an improvement, the density of the mesh cloth is 90-110 g / m 2The hardness of the fabric is related to its density. The higher the density, the thicker the fabric. The harder the fabric, the lower the density, the thinner and softer the fabric. In this solution, the density of the mesh cloth is selected within this range, which can ensure that the mesh cloth has a certain thickness and the softness meets the corresponding requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of the inner cover in the prior art.

[0027] Figure 2 It is an exploded stereoscopic view of the woofer speaker cover in this embodiment.

[0028] Figure 3 This is a front view of the improved inner cover, in which the supporting structure is a supporting rib.

[0029] Figure 4 This is a front view of the improved inner cover, in which the supporting structure includes supporting ribs and supporting blocks.

[0030] Figure 5 This is a front view of the improved inner cover, in which the supporting structure is a disc. DETAILED DESCRIPTION

[0031] The following is further described in detail through specific implementation methods:

[0032] The reference numerals in the drawings of the specification include: outer cover 1, shielding cloth 2, inner cover 3, annular rib 4, hollow area 41, supporting structure 5, supporting rib 51, supporting part 52, through hole 53, and disc 54.

[0033] The embodiment is basically as shown in the attached Figure 2-Figure 5 As shown: A bass speaker cover, comprising an inner cover 3, an outer cover 1, and a shielding cloth 2 located between the inner cover 3 and the outer cover 1. The outer cover 1 in this embodiment is made of metal material, and a plurality of sound-transmitting holes are provided on the outer cover 1. The inner cover 3 is made of plastic material. The outer cover 1 and the inner cover 3 are snapped together. After the outer cover 1 and the inner cover 3 are snapped together, the shielding cloth 2 is located between the inner cover 3 and the outer cover 1.

[0034] Combination Figure 1 As shown, the inner cover 3 in the prior art is provided with multiple layers of annular ribs 4, which are mutually nested, and have different diameters. The inner side of the innermost annular rib 4 is a hollow area 41, and the diameter of the innermost annular rib 4 is 25-35 mm, specifically 30 mm. In this way, the area of ​​the hollow area 41 is relatively large.

[0035] Combination Figure 2 and Figure 3As shown, in this embodiment, a support structure 5 is provided at the hollow area 41 on the basis of the inner cover 3 of the prior art, and the support structure 5 and the innermost annular rib 4 are integrally injection molded. The support structure 5 in this embodiment includes a plurality of support ribs 51, and the plurality of support ribs 51 are cross-connected.

[0036] Combination Figure 4 As shown, in other embodiments, the support structure 5 further includes a support portion 52 , and two ends of the support rib 51 are respectively connected to the support portion 52 and the inner wall of the hollow area 41 . Figure 4 The support portion 52 is annular. Of course, in other embodiments, the support portion 52 can also be circular, triangular or square. The support portion 52 can also be special-shaped. The support portion 52 can be a hollow structure or a solid structure.

[0037] Thus, after assembling the outer cover 1, the inner cover 3 and the shielding cloth 2 together to form a speaker cover, the speaker cover is installed on the interior trim panel on the inner side of the vehicle door. During the installation process, the support structure 5 supports the middle part of the outer cover 1, so that when the speaker cover is installed, the middle part of the outer cover 1 is not easily deformed under the support of the support structure 5, so that there will not be a large gap between the middle part of the outer cover 1 and the shielding cloth 2, and the shielding cloth 2 and the middle part of the outer cover 1 can be attached to each other, thereby avoiding the outer cover 1 and the non-woven fabric from colliding to produce vibration sound when the speaker emits low-frequency sound waves, eliminating low-frequency resonance, and solving abnormal noise. At the same time, the shielding cloth 2 at the middle part of the outer cover 1 is clamped by the support structure 5 and the outer cover 1, so that the shielding cloth 2 here is fixed and not easy to shake under the joint clamping of the support structure 5 and the outer cover 1, thereby avoiding the shielding cloth 2 here from vibrating and colliding with the middle part of the outer cover 1 to cause abnormal noise.

[0038] Combination Figure 5 As shown, of course, in other embodiments, the support structure 5 can also be a disc 54, the disc 54 and the innermost annular rib 4 are integrally fixedly connected, the disc 54 is located on the side of the inner cover 3 close to the outer cover 1, and in order to improve the sound permeability of the disc 54, a plurality of through holes 53 are provided on the disc 54. Thus, Figure 3-Figure 4 Although the support structure 5 in the embodiment can improve the support effect on the middle part of the outer cover 1, there is still a certain gap between adjacent support ribs 51 or between the support ribs 51 and the innermost annular rib 4, and the middle part of the outer cover 1 will still deform at the gap. In this embodiment, the support structure 5 adopts a disc 54, and there will be no problem of gaps between adjacent support ribs 51. The contact area between the support structure and the shielding cloth 2 is larger, so that the middle part of the outer cover 1 can be supported in all directions, and the strength of the middle part of the outer cover 1 is improved in all directions, and the middle part of the outer cover 1 is less likely to deform. At the same time, the inner cover 3 and the outer cover 1 are buckled together. Compared with the support ribs 51, the disc 54 presses on the shielding cloth 2, and the shielding cloth 2 in the middle part of the outer cover 1 is better clamped and pressed by the support structure 5.

[0039] Of course, in other embodiments, the support rib 51 may be integrally formed on the side of the disc 54 away from the outer cover 1, that is, the support rib 51 is located on the side of the disc 54 away from the outer cover 1, so that the strength of the disc 54 can be improved, and the disc 54 can provide more stable support to the middle part of the outer cover 1.

[0040] For the shielding cloth 2, non-woven fabric in the prior art may be selected.

[0041] However, in some embodiments, in order to further solve the problem in the present application and improve the effect of reducing abnormal noise, the shielding cloth 2 in this embodiment is preferably a mesh cloth, and the mesh cloth is made of PET. The thickness of the mesh cloth is 0.4-0.6mm, preferably 0.5mm, and the thickness of the mesh cloth is greater than the gap between the inner cover 3 and the outer cover 1 to accommodate the mesh cloth. The density of the mesh cloth is 90-110g / m 2 The density of the mesh is preferably 100g / m 2 .

[0042] The reason why the non-woven fabric is replaced with a mesh fabric is that the mesh fabric made of PET material is softer than the non-woven fabric, so that the shielding cloth 2 made of such a soft material is not easy to produce obvious collision sound with the outer cover 1. The thickness of the mesh fabric in this embodiment is 0.4-0.6 mm, and the thickness of the mesh fabric is greater than the gap between the inner cover 3 and the outer cover 1 for accommodating the mesh fabric, so that when the mesh fabric is located between the inner cover 3 and the outer cover 1, it can be fully filled, which is conducive to eliminating the gap between the mesh fabric and the outer cover 1, thereby reducing the generation of abnormal noise.

[0043] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A bass speaker cover, comprising an inner cover, an outer cover and a shielding cloth between the inner cover and the outer cover, wherein the outer cover covers the inner cover, the inner cover is provided with multiple layers of annular ribs, the multiple layers of annular ribs are mutually sleeved, and the inner side of the innermost annular rib is a hollow area, characterized in that: A supporting structure is provided in the hollow area.

2. A woofer cover according to claim 1, characterized in that: The supporting structure includes a plurality of supporting ribs.

3. A woofer cover according to claim 2, characterized in that: Multiple supporting ribs are cross-connected.

4. A woofer cover according to claim 2, characterized in that: The support structure also includes a support portion, and two ends of the support rib are respectively connected to the support portion and the inner wall of the hollow area.

5. A woofer cover according to claim 4, characterized in that: The support portion is annular, circular, triangular or square.

6. The woofer cover according to claim 1, characterized in that: The supporting structure is a disc, the disc is fixedly connected to the innermost annular rib, and a plurality of through holes are arranged on the disc.

7. The woofer cover according to claim 1, characterized in that: The shielding cloth is a mesh cloth made of PET material.

8. A woofer cover according to claim 7, characterized in that: The thickness of the mesh cloth is 0.4-0.6 mm, and the thickness of the mesh cloth is greater than the gap between the inner cover and the outer cover for accommodating the mesh cloth.

9. The woofer cover according to claim 1, characterized in that: The diameter of the innermost annular rib is 25-35mm.

10. The woofer cover according to claim 7, characterized in that: The density of the mesh cloth is 90-110g / m 2 .

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