Automobile loudspeaker cover plate with high sound transmission rate

Abstract

The utility model relates to an automobile loudspeaker cover plate with high sound transmission rate, which comprises a first cover plate, a second cover plate and a support frame, and the support frame is arranged between the first cover plate and the second cover plate. The utility model relates to the technical field of loudspeaker cover plates. According to the automobile loudspeaker cover plate with the high sound transmission rate, the bottom surface of the first mesh plate is flush with the bottom surface of the first hard ring, and the bottom surface of the second mesh plate is flush with the bottom surface of the second hard ring, so that the contact surfaces between the first cover plate and the support frame and between the second cover plate and the support frame are planes; furthermore, when the first cover plate is matched with the second cover plate to mount the supporting frame, the sealing gasket can be effectively flattened, so that the two side surfaces of the supporting mesh plate protrude out of the end wall of the sealing gasket, and the first mesh plate and the second mesh plate are jacked upwards to achieve the effect of fixing the first mesh plate and the second mesh plate; the problem that sound waves drive the first mesh plate or the second mesh plate to shake during conduction to affect tone quality can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeaker cover plates, in particular to a car loudspeaker cover plate with high sound transmittance. Background Art

[0002] Speakers are important components of car audio systems and have attracted much attention from consumers. Speaker covers can be used to install speakers on the dashboard and provide structural covering for the speakers.

[0003] The main function of the speaker cover is to protect the speaker and prevent dust and debris from entering the speaker, thereby preventing these impurities from damaging the internal structure and components of the speaker. In this process, the cover can also filter out some noise and make the audio output clearer. Therefore, in some cases, the speaker cover can even improve the sound quality.

[0004] Chinese patent publication number CN216291321U provides a plastic speaker cover, including a bracket and a cover plate connected to the bracket, wherein the cover plate is provided with a plurality of sound-transmitting holes, wherein the sound-transmitting holes are through holes and are distributed on the entire cover plate. The utility model has the advantages that the sound-transmitting holes of the speaker cover are distributed on the entire cover plate, the spacing between adjacent sound-transmitting holes is small, the speaker cover is light and beautiful, and the sound passing effect and the sound conduction effect are good.

[0005] However, in the above technology, the sound hole of the cover plate is composed of a first part and a second part, and the end size of the second part close to the surface layer is larger than the end size of the first part away from the surface layer. Therefore, a step pile is formed at the connection between the first part and the second part, and there is a curved groove at the connection between the first part and the second part. These curved grooves will reflect the conduction of the sound waves during the conduction of the sound waves, and since the inside of the cover plate lead hole is uneven, an echo chamber will easily be formed at the curved groove, which will affect the sound quality of the speaker. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a car speaker cover with high sound transmittance, so as to solve the technical problems mentioned in the above background technology.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions:

[0008] A car speaker cover with high sound transmittance comprises a first cover, a second cover and a support frame, wherein the support frame is installed between the first cover and the second cover;

[0009] The first cover plate includes a first hard ring, a first mesh plate is arranged inside the first hard ring, and a first connecting hole is opened on the side wall of the first hard ring;

[0010] The second cover plate includes a second hard ring, a second mesh plate is arranged inside the second hard ring, a second connecting hole is opened on the side wall of the second hard ring, and fixing bolts are arranged inside the first connecting hole and the second connecting hole.

[0011] The support frame comprises a sealing ring, and a supporting mesh plate is arranged inside the sealing ring.

[0012] Furthermore, the sealing ring is made of a flexible rubber material, the supporting mesh plate is made of a hard plastic material, and a positioning hole is provided at a position of the sealing ring corresponding to the first connecting hole.

[0013] Furthermore, the first connecting hole and the second connecting hole are both countersunk holes.

[0014] Furthermore, the bottom surface of the first mesh plate is flush with the bottom surface of the first hard ring, and the cross-beam and the longitudinal beam of the first mesh plate have conical cross-sections.

[0015] Furthermore, the bottom surface of the second mesh plate is flush with the bottom surface of the second hard ring, and the cross-beam and the longitudinal beam of the second mesh plate have conical cross-sections.

[0016] Furthermore, the two end surfaces of the supporting mesh plate are respectively the same in shape as the bottom surfaces of the first mesh plate and the second mesh plate.

[0017] In summary, the present invention includes at least one of the following beneficial technical effects:

[0018] 1. A car speaker cover with high sound transmittance, since the bottom surface of the first mesh plate is flush with the bottom surface of the first hard ring, and the bottom surface of the second mesh plate is flush with the bottom surface of the second hard ring, the contact surfaces of the first cover plate and the second cover plate with the support frame are both flat, and then when the first cover plate cooperates with the second cover plate to install the support frame, the sealing gasket can be effectively flattened, so that the two side surfaces of the supporting mesh plate protrude from the end wall of the sealing gasket, thereby lifting the first mesh plate and the second mesh plate upward, achieving the effect of fixing the first mesh plate and the second mesh plate, and effectively avoiding the problem that the first mesh plate or the second mesh plate is driven to shake during the conduction of sound waves and affects the sound quality;

[0019] 2. A car speaker cover with high sound transmittance, since the cross sections of the longitudinal beams and the transverse beams of the first mesh plate and the second mesh plate are both conical, and when the first cover plate, the second cover plate and the support frame are connected to each other, the cross beams and longitudinal beams of the first mesh plate, the second mesh plate and the supporting mesh plate are aligned with each other, and then the cross beams and longitudinal beams of the three can together form cross beams and longitudinal beams with elliptical cross sections, thereby improving the flatness of the wall of the sound hole of the speaker cover, and effectively reducing the problem of echo cavity caused by uneven hole wall when sound waves are transmitted. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The utility model is a structural schematic diagram of a car speaker cover with high sound transmittance.

[0022] Figure 2 The utility model is a structural schematic diagram of a fixing bolt of a car speaker cover with high sound transmittance.

[0023] Figure 3 The utility model is a schematic diagram of the exploded structure of a car speaker cover with high sound transmittance.

[0024] Figure 4 The utility model is a structural cross-sectional view of a car speaker cover with high sound transmittance.

[0025] Figure 5 The utility model is a structural plane cross-sectional view of a car speaker cover with high sound transmittance.

[0026] In the figure, 1. first cover plate; 101. first hard ring; 102. first mesh plate; 103. first connecting hole; 2. second cover plate; 201. second hard ring; 202. second mesh plate; 203. second connecting hole; 3. support frame; 301. sealing ring; 302. support mesh plate; 303. positioning hole; 4. fixing bolt. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] Example:

[0029] Reference Figure 1 - Figure 5 The utility model discloses a car speaker cover with high sound transmittance, comprising a first cover 1, a second cover 2 and a support frame 3, wherein the support frame 3 is installed between the first cover 1 and the second cover 2;

[0030] The first cover plate 1 includes a first hard ring 101, a first mesh plate 102 is disposed inside the first hard ring 101, and a first connection hole 103 is opened on the side wall of the first hard ring 101;

[0031] The second cover plate 2 includes a second hard ring 201, a second mesh plate 202 is arranged inside the second hard ring 201, a second connecting hole 203 is opened on the side wall of the second hard ring 201, and a fixing bolt 4 is arranged inside the first connecting hole 103 and the second connecting hole 203.

[0032] The support frame 3 includes a sealing ring 301 , and a supporting mesh plate 302 is arranged inside the sealing ring 301 .

[0033] In this embodiment, when assembling the car speaker cover, the first cover 1, the support frame 3 and the second cover 2 are stacked in turn and clamped by the fixing bolts 4, so that the support frame 3 supports the first mesh plate 102 and the second mesh plate 202 in the middle of the first cover 1 and the second cover 2. When the first cover 1 cooperates with the second cover 2 to install the support frame 3, the sealing gasket can be effectively flattened so that the two side surfaces of the supporting mesh plate 302 protrude from the end wall of the sealing gasket, thereby lifting the first mesh plate 102 and the second mesh plate 202 upward to achieve the effect of fixing the first mesh plate 102 and the second mesh plate 202, and then the setting of the supporting mesh plate 302 can be effectively used to support the first mesh plate 102 and the second mesh plate 202, which can effectively avoid the problem that the first mesh plate 102 or the second mesh plate 202 vibrates during sound wave conduction and affects the sound quality, so as to prevent the mesh plate from vibrating due to sound wave conduction and affecting the sound quality.

[0034] When the first cover plate 1, the second cover plate 2 and the support frame 3 are connected to each other, the cross beams and longitudinal beams of the first mesh plate 102, the second mesh plate 202 and the support mesh plate 302 are aligned with each other. Figure 4 and Figure 5 As shown, the three cross beams and longitudinal beams together form cross beams and longitudinal beams with elliptical cross sections, thereby improving the flatness of the wall of the sound hole of the speaker cover, and effectively reducing the problem of echo cavity caused by uneven hole wall during sound wave transmission.

[0035] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the sealing ring 301 is made of flexible rubber material, the supporting mesh plate 302 is made of hard plastic material, and a positioning hole 303 is opened at a position of the sealing ring 301 corresponding to the first connecting hole 103 .

[0036] In this embodiment, since the supporting mesh plate 302 is made of hard plastic material and the sealing ring 301 is made of flexible material, when the first cover plate 1 and the second cover plate 2 are fixed on both sides of the sealing ring 301, the sealing ring 301 will be squeezed to deform and reduce its thickness. The supporting mesh plate 302 is made of hard material and cannot be compressed due to squeezing. Therefore, the supporting mesh plate 302 will support the first mesh plate 102 and the second mesh plate 202 on both sides, thereby improving the stability of the first mesh plate 102 and the second mesh plate 202, and can effectively avoid the problem of the first mesh plate 102 or the second mesh plate 202 shaking when the sound wave is transmitted.

[0037] In a further preferred embodiment of the present invention, Figure 1-5 As shown, both the first connection hole 103 and the second connection hole 203 are countersunk holes.

[0038] In this embodiment, by setting the countersunk hole, the bolt head and nut of the fixing bolt 4 are hidden inside the countersunk hole when in use, so as to prevent the fixing bolt 4 from protruding and affecting the installation of the speaker cover;

[0039] The fixing bolt 4 is composed of a bolt and a hexagonal nut, and the hexagonal nut is embedded in the second connecting hole 203 and is tightly connected to the hole wall of the second connecting hole 203 .

[0040] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the bottom surface of the first mesh plate 102 is flush with the bottom surface of the first hard ring 101, and the cross-sections of the cross beams and the longitudinal beams of the first mesh plate 102 are conical.

[0041] In this embodiment, since the bottom surface of the first mesh plate 102 is flush with the bottom surface of the first hard ring 101, the bottom surface of the first cover plate 1 is a plane. When the support frame 3 is installed in conjunction with the second cover plate 2, the sealing gasket can be effectively flattened so that the two side surfaces of the supporting mesh plate 302 protrude from the end walls of the sealing gasket, thereby lifting the first mesh plate 102 upward to achieve the effect of fixing the first mesh plate 102.

[0042] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the bottom surface of the second mesh plate 202 is flush with the bottom surface of the second hard ring 201, and the cross-beams and longitudinal beams of the second mesh plate 202 have conical cross-sections.

[0043] In this embodiment, similarly, since the bottom surface of the second mesh plate 202 is flush with the bottom surface of the second hard ring 201, the bottom surface of the second cover plate 2 is a plane, and when the support frame 3 is installed in conjunction with the first cover plate 1, the sealing gasket can be effectively flattened, so that the two side surfaces of the supporting mesh plate 302 protrude from the end wall of the sealing gasket, thereby lifting the second mesh plate 202 upward, achieving the effect of fixing the second mesh plate 202;

[0044] In summary: since the bottom surface of the first mesh plate 102 is flush with the bottom surface of the first hard ring 101, and the bottom surface of the second mesh plate 202 is flush with the bottom surface of the second hard ring 201, the contact surfaces of the first cover plate 1 and the second cover plate 2 with the support frame 3 are both flat, and then when the first cover plate 1 cooperates with the second cover plate 2 to install the support frame 3, the sealing gasket can be effectively flattened, so that the two side surfaces of the supporting mesh plate 302 protrude from the end wall of the sealing gasket, thereby lifting the first mesh plate 102 and the second mesh plate 202 upward, achieving the effect of fixing the first mesh plate 102 and the second mesh plate 202, and then the setting of the supporting mesh plate 302 can be effectively used to support the first mesh plate 102 and the second mesh plate 202, which can effectively avoid the problem of affecting the sound quality by causing the first mesh plate 102 or the second mesh plate 202 to vibrate during sound wave transmission;

[0045] At the same time, since the cross-sections of the first mesh plate 102 and the second mesh plate 202 are both conical, the resistance to air can be effectively reduced, and the sound waves are transmitted in the air, thereby avoiding affecting the penetration of the sound waves, thereby achieving the purpose of improving the sound transmittance of the cover plate.

[0046] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the two end surfaces of the supporting mesh plate 302 are respectively in the same shape as the bottom surfaces of the first mesh plate 102 and the second mesh plate 202 .

[0047] In the present embodiment, since the cross-sections of the longitudinal beams and the transverse beams of the first mesh plate 102 and the second mesh plate 202 are both conical, and when the first cover plate 1, the second cover plate 2 and the support frame 3 are connected to each other, the transverse beams and longitudinal beams of the first mesh plate 102, the second mesh plate 202 and the supporting mesh plate 302 are aligned with each other, and the transverse beams and longitudinal beams of the three can together form transverse beams and longitudinal beams with elliptical cross-sections, thereby improving the flatness of the wall of the sound hole of the speaker cover plate, and effectively reducing the problem of echo cavity caused by uneven hole wall during sound wave transmission.

[0048] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A car speaker cover with high sound transmittance, characterized in that: It comprises a first cover plate (1), a second cover plate (2) and a support frame (3), wherein the support frame (3) is installed between the first cover plate (1) and the second cover plate (2); The first cover plate (1) comprises a first hard ring (101), a first mesh plate (102) is arranged inside the first hard ring (101), and a first connection hole (103) is opened on the side wall of the first hard ring (101); The second cover plate (2) comprises a second hard ring (201), a second mesh plate (202) is arranged inside the second hard ring (201), a second connecting hole (203) is opened on the side wall of the second hard ring (201), and fixing bolts (4) are arranged inside the first connecting hole (103) and the second connecting hole (203) The support frame (3) comprises a sealing ring (301), and a supporting mesh plate (302) is arranged inside the sealing ring (301).

2. The car speaker cover with high sound transmittance according to claim 1, characterized in that: The sealing ring (301) is made of a flexible rubber material, the supporting mesh plate (302) is made of a hard plastic material, and a positioning hole (303) is provided at a position of the sealing ring (301) corresponding to the first connecting hole (103).

3. The car speaker cover with high sound transmittance according to claim 2, characterized in that: The first connecting hole (103) and the second connecting hole (203) are both countersunk holes.

4. The car speaker cover with high sound transmittance according to claim 3, characterized in that: The bottom surface of the first mesh plate (102) is flush with the bottom surface of the first hard ring (101), and the cross-sections of the transverse beam and the longitudinal beam of the first mesh plate (102) are conical.

5. The car speaker cover with high sound transmittance according to claim 4, characterized in that: The bottom surface of the second mesh plate (202) is flush with the bottom surface of the second hard ring (201), and the cross-sections of the cross beam and the longitudinal beam of the second mesh plate (202) are conical.

6. The car speaker cover with high sound transmittance according to claim 5, characterized in that: The two end surfaces of the supporting mesh plate (302) are respectively the same in shape as the bottom surfaces of the first mesh plate (102) and the second mesh plate (202).

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