Loudspeaker diaphragm structure with liquid silica gel coating

Abstract

The utility model discloses a loudspeaker diaphragm structure with a liquid silica gel coating, which comprises a body and a vibrating ring, and the surface of the body and the surface of the vibrating ring are respectively provided with a liquid silica gel coating. According to the utility model, the problem of weather resistance of a single material in the prior art is solved, so that the use limit of the vibrating diaphragm reaches-60 DEG C to 250 DEG C; according to the utility model, the problem that the hardness of the material changes greatly along with the change of the environment temperature in the prior art is solved, and the change of the resonant frequency F0 is effectively controlled; according to the utility model, the problem of insufficient damping of a single material in the prior art is solved, and the vigorous degree, fineness and definition of sound are greatly improved; the distortion degree of the loudspeaker is reduced; according to the utility model, the production cost is reduced by more than 50% compared with that of a silica gel injection process, and the bonding problem of silica gel materials in bonding and assembling can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of loudspeaker diaphragm manufacturing, in particular to a loudspeaker diaphragm structure with a liquid silicone coating. Background Art

[0002] F0 (resonant frequency) refers to the frequency corresponding to the maximum impedance value of the speaker in the low-frequency band in the free sound field. It is an important parameter in electroacoustics and is directly related to the performance of the speaker. In the impedance curve of the speaker, FO refers to the frequency corresponding to the maximum impedance value in the low-frequency band. The frequency corresponding to the first main peak of this impedance value rising with frequency is the resonant frequency of the speaker.

[0003] The resonant frequency is related to the mass and compliance of the speaker, that is, the greater the mass of the vibration system, the softer the paper cone fold and the centering rotor, the greater the compliance and the lower the resonant frequency, and vice versa. This formula can be expressed as FO=1 / 2πSQRT(1 / m*c), where m is the mass of the vibration system and c is the compliance of the vibration system.

[0004] The speaker diaphragm (commonly known as "drum paper") is made of a body and a vibration ring. Currently, the common materials for the vibration ring include cloth and sponge, but the above single materials have their own limitations, such as:

[0005] 1. Weather resistance:

[0006] 1.1 The temperature resistance range of cloth, sponge and other materials is -40 degrees Celsius to 120 degrees Celsius;

[0007] 1.2 The hardness of materials such as cloth and sponge will change greatly with the change of ambient temperature, which will be reflected in the speaker diaphragm and cause the change of the speaker's resonant frequency;

[0008] 2. Acoustic performance:

[0009] 2.1 Cloth, sponge and other materials have insufficient damping, so the sound is not thick, delicate and clear, which can easily cause distortion;

[0010] In the prior art, there are also attempts to use silicone to make speaker vibration rings, because the material properties of silicone are most suitable for application in the field of speaker vibration ring manufacturing, but there are also the following fatal shortcomings;

[0011] 1. The bonding coefficient of silicone is very difficult, which can easily cause quality problems during bonding and assembly;

[0012] 2. Silicone is usually produced by injection molding, which has high processing costs.

[0013] 3. Due to the high density of silicone, pure silicone material will greatly reduce the SPL (sensitivity) of the speaker, increase the weight of the speaker's magnetic circuit system, and thus increase the production cost of the entire speaker;

[0014] 4. Fluorine series waterproofing agents are generally used in existing technologies, but banning the use of fluorine has become a major trend in the future internationally.

[0015] The purpose of the utility model is to solve the above-mentioned technical problems. Utility Model Content

[0016] The utility model aims to provide a loudspeaker diaphragm structure with a liquid silicone coating.

[0017] To solve the above technical problems, the utility model is implemented through the following technical solutions: a loudspeaker diaphragm structure with a liquid silicone coating, comprising a body and a vibration ring, and the surfaces of the body and the vibration ring have a layer of liquid silicone coating.

[0018] As the preferred technical solution of the utility model, further:

[0019] In the aforementioned diaphragm structure with liquid silicone coating, the fitting portion between the body and the vibration ring does not have a liquid silicone layer, and the assembly portion between the vibration ring and the speaker does not have a liquid silicone layer.

[0020] The aforementioned diaphragm structure with liquid silicone coating has an opening in the middle of the body to form a neck structure. The inner and outer sides of the neck structure extending from the opening to a width of 1-2 mm do not have a liquid silicone layer.

[0021] The aforementioned diaphragm structure with liquid silicone coating has at least one circle of R-ring structure on the diaphragm ring, and the outermost circle of the R-ring structure extends toward the assembly surface with a width of 1-1.5 mm and has a circle of liquid silicone layer.

[0022] The aforementioned diaphragm structure with liquid silicone coating, the assembly area of ​​the body neck structure and the dust cap does not have a liquid silicone layer.

[0023] The aforementioned diaphragm structure with liquid silicone coating has a body with eyelet holes for installing the silk thread, and the fixing position of the silk thread does not have a liquid silicone layer.

[0024] The utility model has the following beneficial effects:

[0025] 1. The utility model solves the weather resistance problem of a single material in the prior art:

[0026] 1.1. The utility model can make the use limit of the diaphragm reach -60 degrees Celsius to 250 degrees Celsius;

[0027] 1.2. The utility model solves the problem in the prior art that the hardness of the material changes greatly with the change of the ambient temperature, and effectively controls the change of the resonant frequency F0;

[0028] 2. The utility model can effectively improve the acoustic performance of the diaphragm:

[0029] 2.1. The utility model overcomes the problem of insufficient damping of a single material in the prior art, and greatly improves the thickness, fineness and clarity of the sound;

[0030] 2.2. The utility model effectively reduces the distortion of the speaker and is closer to the original sound;

[0031] 3. The utility model effectively reduces costs:

[0032] 3.1. The production cost of this utility model is reduced by more than 50% compared with the silicone injection process;

[0033] 4. The utility model can effectively solve the bonding problem of silicone materials during lamination and assembly;

[0034] 5. Since the density of silicone is relatively high, and only liquid silicone coating is used in this application, the weight of the diaphragm is greatly reduced compared with pure silicone material, which greatly improves the SPL (sensitivity) of the speaker, can make the magnetic circuit system of the speaker lighter, and reduce the production cost of the entire speaker;

[0035] 6. The diaphragm structure in the present application has excellent waterproof properties and can avoid the problems of using fluorine series waterproofing agents in conventional technologies, because banning the use of fluorine is a major trend in the future internationally. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] 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.

[0037] Figure 1-1 Schematic diagram of the structure of the tweeter diaphragm;

[0038] Figure 1-2 This is the structural breakdown diagram of the tweeter diaphragm;

[0039] Figure 2-1 It is a schematic diagram of the structure of the tweeter diaphragm with a reinforcing rib R-ring structure;

[0040] Figure 2-2 This is a structural exploded diagram of the tweeter diaphragm with a reinforcing rib R-ring structure;

[0041] Figure 3-1 It is a schematic diagram of the structure of the diaphragm with eyelet carcass and R-ring structure;

[0042] Figure 3-2 This is an exploded view of the structure of the diaphragm with eyelet carcass and R-ring structure;

[0043] Figure 4-1 It is a schematic diagram of the structure of an oblate carcass and a diaphragm with a reinforcing rib R-ring structure;

[0044] Figure 4-2 This is a structural exploded view of the oblate carcass and the diaphragm with a reinforcing rib R-ring structure;

[0045] Figure 5-1 It is a schematic diagram of the structure of a circular carcass and a diaphragm with a reinforcing rib R-ring structure;

[0046] Figure 5-2 This is a structural exploded view of the circular carcass and the diaphragm with a reinforced rib R-ring structure;

[0047] Figure 6-1 It is a schematic diagram of the structure of the elliptical carcass and the diaphragm with R-ring structure;

[0048] Figure 6-2 This is a structural breakdown diagram of the elliptical carcass and the diaphragm with R-ring structure;

[0049] Figure 7-1 It is a schematic diagram of the structure of a circular carcass and a diaphragm with an R-ring structure;

[0050] Figure 7-2 This is an exploded view of the structure of the circular carcass and the diaphragm with R-ring structure;

[0051] Figure 8-1 It is a schematic diagram of the structure of a circular carcass and a diaphragm with an R-ring structure;

[0052] Figure 8-2 This is an exploded view of the structure of the circular carcass and the diaphragm with R-ring structure;

[0053] Figure 9-1 It is a schematic diagram of the structure of a circular carcass and a diaphragm with a square R-ring structure;

[0054] Figure 9-2 This is an exploded view of the structure of the circular carcass and the diaphragm with a square R-ring structure;

[0055] Figure 10-1 It is a schematic diagram of the structure of the diaphragm with a special eyelet carcass and R-ring structure;

[0056] Figure 10-2 This is an exploded view of the structure of the diaphragm with a special eyelet carcass and R-ring structure;

[0057] Figure 11-1It is a schematic diagram of the structure of the diaphragm with a reinforced rib carcass and an R-ring structure;

[0058] Figure 11-2 This is an exploded view of the diaphragm with a reinforced rib carcass and R-ring structure;

[0059] Figure 12-1 It is a schematic diagram of the structure of an elliptical carcass and a diaphragm with a special-shaped R-ring structure;

[0060] Figure 12-2 This is a structural breakdown diagram of the elliptical carcass and the diaphragm with a special-shaped R-ring structure;

[0061] Figure 13-1 It is a schematic diagram of the structure of the diaphragm with a 3R ring structure;

[0062] Figure 13-2 This is a structural breakdown diagram of the diaphragm with a 3R ring structure;

[0063] Figure 14-1 It is a schematic diagram of the structure of the diaphragm with a double R-ring structure;

[0064] Figure 14-2 This is a structural breakdown diagram of the diaphragm with a double R-ring structure. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0066] Carcass materials suitable for this embodiment include: paper, paper + various fibers, various woven materials (glass fiber, carbon fiber, bulletproof fiber, basalt fiber, polyester fiber and other fiber materials), non-woven fabrics and other materials, excluding rubber.

[0067] The vibration ring materials suitable for this patent include cloth, foam, composite materials of cloth and foam, etc., excluding rubber. Example 1

[0068] Figure 1-1 to Figure 1-2 It is a structural diagram and exploded diagram of the tweeter diaphragm. During the actual construction, the fitting parts between the body and the vibration ring are not coated with liquid silicone, and the assembly parts between the vibration ring and the speaker are not coated with liquid silicone layer. The remaining surfaces of the body and the vibration ring can be coated with liquid silicone. Example 2

[0069] Figure 2-1 to Figure 2-2This is a structural schematic diagram and exploded diagram of the tweeter diaphragm with a reinforced R-ring structure. During construction, the fitting parts between the body and the vibration ring are not coated with liquid silicone, and the assembly parts between the vibration ring and the speaker are not coated with a liquid silicone layer. The outermost R-ring structure extends 1-1.5mm to the assembly surface to be coated with liquid silicone, and the remaining surfaces of the body and the vibration ring can be coated with liquid silicone. Example 3

[0070] Figure 3-1 to Figure 3-2 It is a structural schematic diagram and exploded diagram of a diaphragm with a body and R-ring structure with an eyelet hole. During the actual construction, the fitting part between the body and the vibration ring is not coated with liquid silicone, the assembly part between the vibration ring and the speaker is not coated with a liquid silicone layer, the outermost R-ring structure extending 1-1.5mm to the assembly surface can be coated with liquid silicone, the inner and outer sides of the neck structure in the middle of the body extending 1-2mm from the opening to the surrounding area do not have a liquid silicone layer, the assembly area of ​​the body neck structure and the dust cap does not have a liquid silicone layer, an eyelet hole for installing a silk thread is provided on the body, the fixing position of the silk thread does not have a liquid silicone layer, and the remaining surfaces of the body and the vibration ring can be coated with liquid silicone. Example 4

[0071] Figure 4-1 to Figure 4-2 It is a structural schematic diagram and exploded diagram of the oblate carcass and the diaphragm with a reinforced R-ring structure. During the actual construction, the fitting parts between the carcass and the vibration ring are not coated with liquid silicone, the assembly parts between the vibration ring and the speaker are not coated with a liquid silicone layer, the outermost R-ring structure extending 1-1.5mm to the assembly surface can be coated with liquid silicone, the neck structure in the middle of the carcass extending 1-2mm in width from the opening to the surrounding areas has no liquid silicone layer on the inner and outer sides, the assembly area of ​​the carcass neck structure and the dust cap has no liquid silicone layer, and the remaining surfaces of the carcass and the vibration ring can be coated with liquid silicone. Example 5

[0072] Figure 5-1 to Figure 5-2 It is a structural schematic diagram and exploded diagram of a circular carcass and a diaphragm with a reinforced R-ring structure. During the actual construction, the fitting parts between the carcass and the vibration ring are not coated with liquid silicone, the assembly parts between the vibration ring and the speaker are not coated with a liquid silicone layer, the outermost R-ring structure extending 1-1.5mm to the assembly surface can be coated with liquid silicone, the neck structure in the middle of the carcass extending 1-2mm in width from the opening to the surrounding areas has no liquid silicone layer on the inner and outer sides, the assembly area of ​​the carcass neck structure and the dust cap has no liquid silicone layer, and the remaining surfaces of the carcass and the vibration ring can be coated with liquid silicone. Example 6

[0073] Figure 6-1 to Figure 6-2It is a structural schematic diagram and exploded diagram of an elliptical carcass and a diaphragm with an R-ring structure. During the actual construction, the fitting parts between the carcass and the vibration ring are not coated with liquid silicone, the assembly parts between the vibration ring and the speaker are not coated with a liquid silicone layer, the outermost R-ring structure extending 1-1.5mm to the assembly surface can be coated with liquid silicone, the inner and outer sides of the neck structure in the middle of the carcass extending 1-2mm in width from the opening to the surrounding areas do not have a liquid silicone layer, the assembly area of ​​the carcass neck structure and the dust cap does not have a liquid silicone layer, and the remaining surfaces of the carcass and the vibration ring can be coated with liquid silicone. Example 7

[0074] Figure 7-1 to Figure 7-2 It is a structural schematic diagram and exploded diagram of a circular carcass and a diaphragm with an R-ring structure. During the actual construction, the fitting parts between the carcass and the vibration ring are not coated with liquid silicone, the assembly parts between the vibration ring and the speaker are not coated with a liquid silicone layer, the outermost R-ring structure extending 1-1.5mm to the assembly surface can be coated with liquid silicone, the inner and outer sides of the neck structure in the middle of the carcass extending 1-2mm in width from the opening to the surrounding areas do not have a liquid silicone layer, the assembly area of ​​the carcass neck structure and the dust cap does not have a liquid silicone layer, and the remaining surfaces of the carcass and the vibration ring can be coated with liquid silicone. Example 8

[0075] Figures 8-1 to 8-2 It is a structural schematic diagram and exploded diagram of a circular carcass and a diaphragm with an R-ring structure. During the actual construction, the fitting parts between the carcass and the vibration ring are not coated with liquid silicone, the assembly parts between the vibration ring and the speaker are not coated with a liquid silicone layer, the outermost R-ring structure extending 1-1.5mm to the assembly surface can be coated with liquid silicone, the inner and outer sides of the neck structure in the middle of the carcass extending 1-2mm in width from the opening to the surrounding areas do not have a liquid silicone layer, the assembly area of ​​the carcass neck structure and the dust cap does not have a liquid silicone layer, and the remaining surfaces of the carcass and the vibration ring can be coated with liquid silicone. Example 9

[0076] Figure 9-1 to Figure 9-2 It is a structural schematic diagram and exploded diagram of a circular carcass and a diaphragm with a square R-ring structure. During the actual construction, the fitting parts between the carcass and the vibration ring are not coated with liquid silicone, the assembly parts between the vibration ring and the speaker are not coated with a liquid silicone layer, the outermost R-ring structure extending 1-1.5mm to the assembly surface can be coated with liquid silicone, the inner and outer sides of the neck structure in the middle of the carcass extending 1-2mm in width from the opening to the surrounding areas do not have a liquid silicone layer, the assembly area of ​​the carcass neck structure and the dust cap does not have a liquid silicone layer, and the remaining surfaces of the carcass and the vibration ring can be coated with liquid silicone. Example 10

[0077] Figures 10-1 to 10-2It is a structural schematic diagram and exploded diagram of a diaphragm with a special eyelet carcass and R-ring structure. During the actual construction, the fitting parts between the carcass and the vibration ring are not coated with liquid silicone, the assembly parts between the vibration ring and the speaker are not coated with a liquid silicone layer, the outermost R-ring structure extending 1-1.5mm to the assembly surface can be coated with liquid silicone, the inner and outer sides of the neck structure in the middle of the carcass extending 1-2mm in width from the opening to the surrounding areas do not have a liquid silicone layer, the assembly area of ​​the carcass neck structure and the dust cap does not have a liquid silicone layer, an eyelet hole for installing a silk thread is provided on the carcass, the fixing position of the silk thread does not have a liquid silicone layer, and the remaining surfaces of the carcass and the vibration ring can be coated with liquid silicone. Embodiment 11

[0078] Figure 11-1 to Figure 11-2 It is a structural schematic diagram and exploded diagram of a diaphragm with a reinforced rib carcass and an R-ring structure. During the actual construction, the fitting parts between the carcass and the vibration ring are not coated with liquid silicone, the assembly parts between the vibration ring and the speaker are not coated with a liquid silicone layer, the outermost R-ring structure extending 1-1.5mm to the assembly surface can be coated with liquid silicone, the inner and outer sides of the neck structure in the middle of the carcass extending 1-2mm in width from the opening to the surrounding areas do not have a liquid silicone layer, the assembly area of ​​the carcass neck structure and the dust cap does not have a liquid silicone layer, and the remaining surfaces of the carcass and the vibration ring can be coated with liquid silicone. Example 12

[0079] Figure 12-1 to Figure 12-2 It is a structural schematic diagram and exploded diagram of an elliptical carcass and a diaphragm with a special-shaped R-ring structure. During the actual construction, the fitting part between the carcass and the vibration ring is not coated with liquid silicone, the assembly part between the vibration ring and the speaker is not coated with a liquid silicone layer, the outermost R-ring structure extending 1-1.5mm to the assembly surface can be coated with liquid silicone, the inner and outer sides of the neck structure in the middle of the carcass extending 1-2mm in width from the opening to the surrounding areas do not have a liquid silicone layer, the assembly area of ​​the carcass neck structure and the dust cap does not have a liquid silicone layer, and the remaining surfaces of the carcass and the vibration ring can be coated with liquid silicone. Embodiment 13

[0080] Figure 13-1 to Figure 13-2 It is a structural schematic diagram and exploded diagram of the diaphragm with a 3R ring structure. During the actual construction, the fitting part between the carcass and the vibration ring is not coated with liquid silicone, the assembly part between the vibration ring and the speaker is not coated with a liquid silicone layer, the outermost R ring structure extending 1-1.5mm to the assembly surface can be coated with liquid silicone, the inner and outer sides of the neck structure in the middle of the carcass extending 1-2mm in width from the opening to the surrounding areas do not have a liquid silicone layer, the assembly area of ​​the carcass neck structure and the dust cap does not have a liquid silicone layer, and the remaining surfaces of the carcass and the vibration ring can be coated with liquid silicone. Embodiment 14

[0081] Figure 14-1 to Figure 14-2 It is a structural schematic diagram and exploded diagram of the diaphragm with a double R-ring structure. During the actual construction, the fitting part between the carcass and the vibration ring is not coated with liquid silicone, the assembly part between the vibration ring and the speaker is not coated with a liquid silicone layer, the outermost R-ring structure extending 1-1.5mm to the assembly surface can be coated with liquid silicone, the inner and outer sides of the neck structure in the middle of the carcass extending 1-2mm in width from the opening to the surrounding areas do not have a liquid silicone layer, the assembly area of ​​the carcass neck structure and the dust cap does not have a liquid silicone layer, and the remaining surfaces of the carcass and the vibration ring can be coated with liquid silicone.

[0082] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model; the preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods; obviously, many modifications and changes can be made according to the contents of this specification; this specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model; the utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A loudspeaker diaphragm structure with a liquid silicone coating, comprising a body and a vibration ring, characterized in that: The surfaces of the carcass and the vibration ring are coated with a layer of liquid silicone.

2. The diaphragm structure with liquid silicone coating according to claim 1, characterized in that: The fitting part between the body and the vibration ring does not have a liquid silicone layer, and the assembly part between the vibration ring and the speaker does not have a liquid silicone layer.

3. The diaphragm structure with liquid silicone coating according to claim 2, characterized in that: The middle part of the carcass is provided with an opening to form a neck structure, and the inner and outer sides of the neck structure extending from the opening to the surrounding area with a width of 1-2 mm do not have a liquid silicone layer.

4. The diaphragm structure with liquid silicone coating according to claim 3, characterized in that: The vibration ring has at least one circle of R-ring structure, and the outermost circle of the R-ring structure extends toward the assembly surface with a width of 1-1.5 mm and has a circle of liquid silicone layer.

5. The diaphragm structure with liquid silicone coating according to claim 3, characterized in that: The assembly area of ​​the carcass neck structure and the dust cap does not have a liquid silicone layer.

6. The diaphragm structure with liquid silicone coating according to claim 2, characterized in that: The carcass is provided with eyelet holes for installing the brocade thread, and the fixing position of the brocade thread does not have a liquid silicone layer.

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