Positioning support piece, method for manufacturing the same, and automotive speaker

Abstract

A positioning support piece, a method for manufacturing the same, and a speaker for automobiles. The positioning support piece for the speaker includes an inner ring portion having an annular first inner edge and a first outer edge, and an outer ring portion having an annular second inner edge and a second outer edge, wherein the material of the inner ring portion is cloth and the material of the outer ring portion is rubber, or the material of the inner ring portion is rubber and the material of the outer ring portion is cloth, and the inner ring portion and the outer ring portion are each wavy and each has wave crests and wave troughs, and the first outer edge and the second inner edge are fixedly connected. The positioning support piece is advantageous for the speaker to obtain a better frequency response curve and reduce distortion, and in particular the frequency response curve is good and distortion is low in the low frequency band.

Description

Related Application

[0001] The present application claims priority from Chinese patent applications with application numbers CN2023111366557 and CN2023224021822 filed on September 5, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure belongs to the field of automotive loudspeakers, and relates to a positioning support piece, a method for manufacturing the same, and an automotive loudspeaker. Background Art

[0003] Today's audio-visual systems are developing rapidly, and especially in the acoustic field, requirements for the sound quality of loudspeakers are increasing. Among them, mid-bass loudspeakers are components of audio reproduction systems, especially in-vehicle audio systems. Existing loudspeakers generally include a frame, a diaphragm disposed on the frame, a voice coil connected to the diaphragm, and a positioning support piece. A material widely used for positioning support pieces arranged in existing loudspeakers is cotton cloth. For example, the positioning support piece for a loudspeaker and the manufacturing method thereof disclosed in Chinese patent CN108053818B use cotton or polyester continuous fibers as raw materials. Loudspeakers using conventional cotton cloth positioning support pieces have poor damping performance. There are also patents that disclose that rubber positioning support pieces can be adopted. For example, the thin large-output audio actuator disclosed in Chinese patent CN108650602A uses rubber as a raw material for its positioning support piece. However, mid-bass loudspeakers using rubber positioning support pieces have relatively large distortion. Summary of the Invention

[0004] This disclosure relates to a positioning support piece and a method for manufacturing the same, which are advantageous for a speaker to obtain a better frequency response curve and reduce distortion, particularly in the low-frequency range, and which have a good frequency response curve and low distortion. This disclosure further relates to an automotive speaker employing the positioning support piece, specifically a bass speaker or ultra-bass speaker for an automotive audio system.

[0005] A first aspect of this disclosure is the provision of a speaker positioning support piece, An inner ring portion having an annular first inner edge and a first outer edge, It includes an outer ring portion having an annular second inner edge and a second outer edge, The material of the inner ring portion is cloth and the material of the outer ring portion is rubber, or the material of the inner ring portion is rubber and the material of the outer ring portion is cloth. The inner ring portion and the outer ring portion are each wavy, and each has a wave crest and a wave trough, and the first outer edge and the second inner edge are fixedly connected.

[0006] In some embodiments, the first outer edge and the second inner edge are stacked on top of each other.

[0007] In some embodiments, the first outer edge and the second inner edge are bonded together with an adhesive.

[0008] In some embodiments, the first outer edge and the second inner edge are fixed together by heat-pressing after applying an adhesive.

[0009] In some embodiments, the first outer edge and the second inner edge are located between one wave crest of the inner ring and one wave trough of the outer ring, or between one wave trough of the inner ring and one wave crest of the outer ring. That is, the first outer edge is not a wave crest or trough of the inner ring, and the second outer edge is not a wave crest or trough of the outer ring.

[0010] In some embodiments, the area ratio of the inner ring portion to the outer ring portion is 1:(1.5~3). In some other embodiments, the area ratio of the inner ring portion to the outer ring portion is 1:(2~3). In one specific embodiment, the area ratio of the inner ring portion to the outer ring portion is 1:2.

[0011] In some embodiments, the inner ring portion exhibits a wavy shape from the first inner edge to the first outer edge, and the outer ring portion exhibits a wavy shape from the second inner edge to the second outer edge.

[0012] In some embodiments, the positioning support piece further includes a connecting piece, the connecting piece extending outward from the second outer edge along a single plane, and the connecting piece and the outer ring portion are integral.

[0013] In some embodiments, the number of wave crests in the inner ring is less than the number of wave crests in the outer ring, and the spacing between wave crests and wave troughs on the inner and outer rings is equal. In some other embodiments, the ratio of the number of wave crests in the inner ring to the number of wave crests in the outer ring is 1:(1.1~2.5). In one specific embodiment, the ratio of the number of wave crests in the inner ring to the number of wave crests in the outer ring is 1:1.5.

[0014] In some embodiments, the cloth is a cotton cloth, and the rubber comprises nitrile rubber. Here, the cloth is a cotton cloth cut into a required shape (including, but not limited to, a circular, rectangular, rounded rectangular, or track shape with an opening in the center), and the cotton cloth is formed by knitting cotton fibers. The nitrile rubber is formed into a required shape (including, but not limited to, a circular, rectangular, rounded rectangular, or track shape with an opening in the center) by injection molding. In this specification, “track shape” is also called a racetrack shape, and is formed from one rectangle and two symmetrical semicircles or arches, where the longest chords of the two semicircles or arches each overlap with a pair of opposing sides of the rectangle.

[0015] In some embodiments, the shape of the cloth and the shape of the rubber are similar figures in plan view.

[0016] In some embodiments, the inner ring portion is a single-layer structure made of cloth or cloth with a coating, and the outer ring portion is a single-layer structure made of rubber. Here, the coating includes waterproof coatings or reinforcing coatings, etc.

[0017] In some embodiments, the outer ring portion is a single-layer structure made of cloth or cloth with a coating, and the inner ring portion is a single-layer structure made of rubber. Here, the coating includes waterproof coatings or reinforcing coatings, etc.

[0018] Another aspect of this disclosure is, An automotive speaker, comprising the positioning support piece, wherein the automotive speaker is an ultra-low frequency speaker or low frequency speaker for mounting in an automobile.

[0019] In this specification, "ultra-low frequency speaker" refers to a speaker whose emitted sound is concentrated in the frequency band of 20-40 Hz, and "bass speaker" refers to a speaker whose emitted sound is concentrated in the frequency band of 40-80 Hz.

[0020] Another aspect of this disclosure is, A method for manufacturing the positioning support piece, The steps include cutting the cloth into a ring shape to use as the base material for the inner ring, The steps include providing an annular rubber material to serve as the base material for the outer ring, The process involves applying adhesive to the outer edge of the fabric and / or the inner edge of the rubber material, laminating them, and then heat-pressing them at 80-160°C. The process includes the step of applying a corrugated shape to the connected cloth and rubber material to obtain the positioning support piece.

[0021] This disclosure further employs the following technical solutions: A method for manufacturing the positioning support piece, the manufacturing method comprises: providing an annular rubber material as a base material for an inner ring portion; cutting cloth into an annular shape as a base material for an outer ring portion; applying an adhesive to an outer edge of the rubber material and / or an inner edge of the cloth, laminating the same and performing thermocompression bonding at 80~160°C; performing corrugating processing on the connected cloth and rubber material to obtain the positioning support piece.

[0022] The positioning support piece of the present disclosure is mainly a composite positioning support piece in which an inner ring portion and an outer ring portion both having a corrugated shape are bonded to each other, wherein one of the inner ring portion and the outer ring portion is made of cloth and the other is made of rubber, and an outer edge of the inner ring portion and an inner edge of the outer ring portion are fixedly connected. After being applied to a loudspeaker, the positioning support piece improves the low-frequency or ultra-low-frequency frequency characteristic curve of the loudspeaker, satisfies the requirement of good damping for bass or ultra-bass automotive loudspeakers, reduces the distortion degree at medium and low frequencies, provides a better overall auditory perception, and improves sound quality.

[0023] In order to more clearly describe the technical solution of the present disclosure, the following briefly introduces the drawings required in the description of embodiments. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings without creative efforts. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] [Figure 1] Fig. 1 is a perspective view of a positioning support piece according to an embodiment of the present disclosure. [Figure 2] Fig. 2 is a plan view of a positioning support piece according to an embodiment of the present disclosure. [Figure 3] Fig. 3 is a sectional view taken along line A-A in Fig. 2. [Figure 4] Fig. 4 is a partial enlarged view of part B in Fig. 3. [Figure 5]Figure 5 is a plan view of another positioning support piece according to an embodiment of the present disclosure. [Figure 6] Figure 6 is a cross-sectional view along line AA in Figure 5. [Figure 7] Figure 7 is a magnified view of section C in Figure 6. [Figure 8] Figure 8 is a plan view of an automotive speaker according to an embodiment of the present disclosure. [Figure 9] Figure 9 is a perspective view of an automotive speaker according to an embodiment of the present disclosure. [Figure 10] Figure 10 is a partially enlarged view of the positioning support piece portion in Figure 9. [Figure 11] Figure 11 is a plan view of another automotive speaker according to an embodiment of the present disclosure. [Figure 12] Figure 12 is a perspective view of another automotive speaker according to an embodiment of the present disclosure. [Figure 13] Figure 13 is a magnified view of section E in Figure 12. [Figure 14] Figure 14 shows the frequency response curves of two types of automotive speakers according to the embodiments of this disclosure, and two types of automotive speakers, Comparative Example 1 and Comparative Example 2. [Figure 15] Figure 15 is a magnified view of the low-frequency portion in Figure 14. [Figure 16] Figure 16 shows the distortion curves of two types of automotive speakers according to the embodiments of this disclosure, and two types of automotive speakers, Comparative Example 1 and Comparative Example 2. [Modes for carrying out the invention]

[0025] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the drawings, so that the advantages and features of the present disclosure may be more readily understood by those skilled in the art. It should be noted that the description of these embodiments is intended to aid in the understanding of the present disclosure and does not limit it. Furthermore, the technical features of the embodiments of the present disclosure described below can be combined with each other, insofar as they do not conflict with each other.

[0026] In this disclosure, "inside" and "outside" are defined relative to the center line of the voice coil, with the direction closer to the center line of the voice coil being considered "inside" and the opposite direction being considered "outside." The directional terms "up," "down," and "horizontal" are provided to facilitate understanding of the structure of the automotive speaker for those skilled in the art and do not limit the state of the speaker system after it has been installed in a usage scenario.

[0027] Figure 1 shows the positioning support piece 110 of this embodiment. As shown in Figures 2 to 4, this positioning support piece 110 includes an inner ring portion 11 and an outer ring portion 12, the material of the inner ring portion 11 is cloth and the material of the outer ring portion 12 is rubber. Specifically, the material of the inner ring portion 11 is cotton cloth and the material of the outer ring portion 12 includes nitrile rubber. The inner ring portion 11 and the outer ring portion 12 are each wavy and each has wave crests and wave troughs, the number of wave crests in the inner ring portion 11 is less than the number of wave crests in the outer ring portion 12, and the distance between the wave crests and wave troughs in the inner ring portion 11 and the outer ring portion 12 is equal. The inner ring portion 11 includes a first inner edge 111 and a first outer edge 112, and the inner ring portion 11 is wavy from the first inner edge 111 to the first outer edge 112. The outer ring portion 12 includes a second inner edge 121 and a second outer edge 122, and the outer ring portion 12 is wavy from the second inner edge 121 to the second outer edge 122. The first outer edge 112 and the second inner edge 121 are located between one wave crest of the inner ring portion 11 and one wave trough of the outer ring portion 12, or between one wave trough of the inner ring portion 11 and one wave crest of the outer ring portion 12. The first outer edge 112 and the second inner edge 121 are bonded together with an adhesive, and after applying the adhesive they are heat-pressed to fix them in place, thereby achieving lamination and fixed connection between them. The first outer edge 112 is not a wave crest or wave trough of the inner ring portion 11, and the second outer edge 122 is not a wave crest or wave trough of the outer ring portion 12.

[0028] As shown in Figure 3, the positioning support piece 110 further includes a connecting piece 13, which extends outward from the second outer edge 122 along a single plane, and the connecting piece 13 and the outer ring portion 12 are integral.

[0029] Furthermore, the area ratio of the inner ring portion 11 to the outer ring portion 12 is 1:(1.5~3). In the positioning support piece shown in Figure 2, the area ratio of the inner ring portion 11 to the outer ring portion 12 is 1:2. The inner ring portion 11 has 2 wave crests, and the outer ring portion 12 has 3 wave crests. In plan view, the shapes of the inner ring portion 11 and the outer ring portion 12 are similar figures, and they are concentric.

[0030] Furthermore, it should be noted that the cotton fabric used for the inner ring portion 11 is woven from fibers (e.g., cotton and / or hemp fibers), and the inner ring portion 11 has a single-layer structure and is processed into a sinusoidal or cosine wave-like shape. The outer ring portion 12 has a single-layer structure formed by integrally injection molding of rubber, and is further processed into a sinusoidal or cosine wave-like shape. The deviation value of the thickness of the inner ring portion 11 and the outer ring portion 12 is less than ±0.1 mm, and the shape of the wave (including the height and width of the wave) is identical.

[0031] The manufacturing method of the positioning support piece 110 described above is: The steps include cutting the cloth in a circular shape to form the base material for the inner ring portion 11, The steps include providing an annular rubber material to serve as the base material for the outer ring portion 12, The process involves applying adhesive to the outer edge of the fabric and / or the inner edge of the rubber material, laminating them, and then heat-pressing them at 80-160°C. The steps include: applying a corrugated shape to the connected cloth and rubber material to obtain a positioning support piece 110; Includes.

[0032] Figures 6 to 8 show another positioning support piece 110 according to this embodiment. As shown in Figures 6 to 8, this positioning support piece 110 includes an inner ring portion 21 and an outer ring portion 22, the material of the inner ring portion 21 being rubber and the material of the outer ring portion 22 being cloth. Specifically, the material of the inner ring portion 21 is nitrile rubber and the material of the outer ring portion 22 is cotton cloth. The inner ring portion 21 and the outer ring portion 22 are each wavy and each has wave crests and wave troughs, the number of wave crests in the inner ring portion 21 is less than the number of wave crests in the outer ring portion 22, and the distance between the wave crests and wave troughs in the inner ring portion 21 and the outer ring portion 22 is equal. The inner ring portion 21 includes a first inner edge 211 and a first outer edge 212, and the inner ring portion 21 is wavy from the first inner edge 211 to the first outer edge 212. The outer ring portion 22 includes a second inner edge 221 and a second outer edge 222, and the outer ring portion 22 is wavy from the second inner edge 221 to the second outer edge 222. The first outer edge 212 and the second inner edge 221 are located between one wave crest of the inner ring portion 21 and one wave trough of the outer ring portion 22, or between one wave trough of the inner ring portion 21 and one wave crest of the outer ring portion 22. The first outer edge 212 and the second inner edge 221 are bonded together with an adhesive, and after applying the adhesive they are heat-pressed to fix them in place, thereby achieving lamination and fixed connection between them. The first outer edge 212 is not a wave crest or trough of the inner ring portion 21, and the second outer edge 222 is not a wave crest or trough of the outer ring portion 22.

[0033] As shown in Figure 6, the positioning support piece 110 further includes a connecting piece 23, which extends outward from the second outer edge 222 along a single plane, and the connecting piece 23 and the outer ring portion 22 are integral.

[0034] Furthermore, the area ratio of the inner ring portion 21 to the outer ring portion 22 is 1:(1.5~3). In the positioning support piece shown in Figure 5, the area ratio of the inner ring portion 11 to the outer ring portion 12 is 1:2. The inner ring portion 11 has 2 wave crests, and the outer ring portion 12 has 3 wave crests. In plan view, the shapes of the inner ring portion 11 and the outer ring portion 12 are similar figures, and they are concentric.

[0035] Furthermore, it should be noted that the cotton fabric used for the outer ring portion 12 is woven from fibers (e.g., cotton and / or hemp fibers), and the outer ring portion 12 has a single-layer structure and is processed into a sinusoidal or cosine wave-like shape. The inner ring portion 11 has a single-layer structure formed by integrally injection molding of rubber, and is further processed into a sinusoidal or cosine wave-like shape. The deviation value of the thickness of the inner ring portion 11 and the outer ring portion 12 is less than ±0.1 mm, and the shape of the wave (including the height and width of the wave) is identical.

[0036] The manufacturing method of the positioning support piece 110 in Example 2 described above is: The steps include providing an annular rubber material to serve as the base material for the inner ring portion 21, The steps include cutting the cloth into a ring shape to form the base material for the outer ring portion 22, The process involves applying adhesive to the outer edge of the rubber material and / or the inner edge of the fabric, laminating them, and then heat-pressing them at 80-160°C. The steps include: applying a corrugated shape to the connected cloth and rubber material to obtain a positioning support piece 110; Includes.

[0037] Figures 8 to 10 show a speaker of this embodiment, which is an ultra-low frequency speaker or low frequency speaker mounted in an automobile. Referring to Figures 8 to 10, the speaker includes the positioning support piece 110 shown in Figures 1 to 4. The automobile speaker further includes a frame 14, a front plate 17, a magnet 19, and a T-shaped yoke 18. The frame 14 is provided with a diaphragm 15, to which a voice coil 16 is connected. The front plate 17 and magnet 19 are each provided to surround the T-shaped yoke 18, and a magnetic gap is formed between them and the outer wall of the T-shaped yoke 18 into which the voice coil 16 can be inserted. The lower part of the voice coil 16 is inserted into this magnetic gap, and the diaphragm 15 covers the front surface of the T-shaped yoke 18. Here, the outer edge of the front plate 17 is fitted to the lower end of the frame 14. Specifically, an annular mounting groove is formed at the lower end of the frame 14, and the outer edge of the front plate 17 is inserted into the mounting groove.

[0038] Figures 9 to 10 show an automotive speaker of this embodiment in which the positioning support piece 110 shown in Figures 1 to 4 is arranged. The positioning support piece 110 includes an inner ring portion 11 and an outer ring portion 12, the material of the inner ring portion 11 being cloth and the material of the outer ring portion 12 being rubber. Specifically, the material of the inner ring portion 11 is cotton cloth and the material of the outer ring portion 12 is nitrile rubber. A low-frequency or bass speaker in which this positioning support piece 110 is arranged has good damping performance, low distortion, and good overall sound quality.

[0039] Figures 11 to 13 show another speaker of this embodiment, which is an ultra-low frequency or low frequency speaker mounted in an automobile. Referring to Figures 11 to 13, the speaker includes a positioning support piece 110 as shown in Figures 5 to 7. The automobile speaker further includes a frame 24, a front plate 27, a magnet 29, and a T-shaped yoke 28. The frame 24 is provided with a diaphragm 25, to which a voice coil 26 is connected. The front plate 27 and magnet 29 are provided so as to surround the T-shaped yoke 28, and a magnetic gap is formed between them and the outer wall of the T-shaped yoke 28 into which the voice coil 26 can be inserted. The lower part of the voice coil 26 is inserted into this magnetic gap, and the diaphragm 25 covers the front surface of the T-shaped yoke 28. Here, the outer edge of the front plate 27 is fitted to the lower end of the frame 24. Specifically, an annular mounting groove is formed at the lower end of the frame 24, and the outer edge of the front plate 27 is inserted into the mounting groove.

[0040] Figures 12 and 13 show an automotive speaker of this embodiment in which the positioning support piece 110 shown in Figures 5 to 7 is arranged. The positioning support piece 110 includes an inner ring portion 21 and an outer ring portion 22, the material of which is rubber for the inner ring portion 21 and cloth for the outer ring portion 22. Specifically, the material of the inner ring portion 21 is nitrile rubber, and the material of the outer ring portion 22 is cotton cloth. A low-frequency or low-frequency speaker in which this positioning support piece 110 is arranged has good damping performance, low distortion, and good overall sound quality.

[0041] (Comparative Example 1) Comparative Example 1 provides a type of automotive speaker that is basically the same as the two types of automotive speakers described in the Examples, except that the only difference is the material of the positioning support piece. The positioning support piece used in Comparative Example 1 is a rubber positioning support piece, which is manufactured as a single piece of rubber.

[0042] (Comparative Example 2) Comparative Example 2 provides a type of automotive speaker that is basically the same as the two types of automotive speakers described above in the Examples, but the only difference is the material of the positioning support piece. The positioning support piece used in Comparative Example 2 is a cotton cloth positioning support piece, and the entire piece is manufactured as a single unit from cotton cloth.

[0043] (Comparison of speaker frequency response curves) Frequency response tests were conducted on the two types of automotive speakers in the Examples and the automotive speakers in Comparative Examples 1 and 2, and the results are shown in Figure 14. Here, according to the distinction by the intensity and thickness of the curves, the lightest and thinnest lines represent the frequency response curves of Comparative Examples 1 and 2, while the darkest and thickest lines represent the frequency response curves of the two types of automotive speakers in the Examples. As can be seen from Figures 14 and 15, in the mid-low frequency band, the frequency response curves of the two types of automotive speakers in the Examples are better than those of Comparative Examples 1 and 2.

[0044] (Comparison of speaker distortion curves) Figure 16 shows the distortion curves obtained from distortion tests performed on the two types of automotive speakers in the example and the automotive speakers in comparative examples 1 and 2. Here, according to the distinction by the intensity and thickness of the curves, the lightest and thinnest lines represent the distortion curves of comparative examples 1 and 2, while the darkest and thickest lines represent the distortion curves of the two types of automotive speakers in the example. As can be seen from Figure 16, the distortion of the two types of automotive speakers in the example is clearly lower than that of comparative examples 1 and 2, and the distortion in the mid-to-low frequency range is particularly small.

[0045] The positioning support piece in the above embodiment is mainly a composite positioning support piece in which an inner ring portion and an outer ring portion, both exhibiting a wavy shape, are joined together. In this case, one of the inner ring portion and the other is made of cloth and the other is made of rubber, and the outer edge of the inner ring portion and the inner edge of the outer ring portion are fixedly connected. When applied to a speaker, it improves the frequency response curve of the speaker in the mid-to-low frequency range, while simultaneously satisfying the requirement for good damping of ultra-low or low frequencies in automotive speakers, reducing distortion, improving overall listening perception, and enhancing sound quality.

[0046] The features of the embodiments of this disclosure are stated in the following clauses. 1. A speaker positioning support piece, An inner ring portion having an annular first inner edge and a first outer edge, It includes an outer ring portion having an annular second inner edge and a second outer edge, Here, the material of the inner ring portion is cloth and the material of the outer ring portion is rubber, or the material of the inner ring portion is rubber and the material of the outer ring portion is cloth. The inner ring portion and the outer ring portion are each wavy, and each has a wave crest and a wave trough, and the first outer edge and the second inner edge are fixedly connected.

[0047] 2. In the positioning support piece described in Clause 1, the first outer edge and the second inner edge are stacked on top of each other.

[0048] 3. In the positioning support piece described in Clause 1 or 2, the first outer edge and the second inner edge are bonded together with an adhesive.

[0049] 4. In the positioning support piece described in Clause 3, the first outer edge and the second inner edge are fixed by heat pressing after applying an adhesive.

[0050] 5. In the positioning support piece described in any one of the preceding clauses, the first outer edge and the second inner edge are located between one wave crest of the inner ring portion and one wave trough of the outer ring portion, or between one wave trough of the inner ring portion and one wave crest of the outer ring portion.

[0051] 6. In the positioning support piece described in any one of the above clauses, the area ratio of the inner ring portion to the outer ring portion is 1:(1.5~3).

[0052] 7. In the positioning support piece described in any one of the preceding clauses, the inner ring portion is wavy from the first inner edge to the first outer edge, and the outer ring portion is wavy from the second inner edge to the second outer edge.

[0053] 8. In the positioning support piece described in Clause 7, the positioning support piece further includes a connecting piece, the connecting piece extending outward from the second outer edge along a single plane, and the connecting piece and the outer ring portion are integral.

[0054] 9. In the positioning support piece described in Article 7, the number of wave crests in the inner ring portion is less than the number of wave crests in the outer ring portion, and the distance between the wave crests and wave troughs on the inner ring portion and the outer ring portion is equal.

[0055] 10. In the positioning support piece described in any one of the preceding clauses, the cloth is cotton cloth and the rubber includes nitrile rubber.

[0056] 11. In the positioning support piece described in any one of the preceding clauses, the inner ring portion is a single-layer structure made of cloth or a coated cloth, and the outer ring portion is a single-layer structure made of rubber, or the outer ring portion is a single-layer structure made of cloth or a coated cloth, and the inner ring portion is a single-layer structure made of rubber.

[0057] 12. An automotive speaker comprising a positioning support piece as described in any one of the clauses 1 to 11, wherein the automotive speaker is an ultra-low frequency speaker or a low frequency speaker for mounting in an automobile.

[0058] 13. In the method for manufacturing a positioning support piece as described in any one of the clauses 1 to 11, The aforementioned manufacturing method is The steps include cutting the cloth into a ring shape to use as the base material for the inner ring, The steps include providing an annular rubber material to serve as the base material for the outer ring, The process involves applying adhesive to the outer edge of the fabric and / or the inner edge of the rubber material, laminating them, and then heat-pressing them at 80-160°C. The step of applying a corrugated shape to the connected cloth and rubber material to obtain the positioning support piece is included, or Or, The aforementioned manufacturing method is The steps include providing an annular rubber material to be used as the base material for the inner ring, The steps include cutting the cloth into a ring shape to use as the base material for the outer ring, The process involves applying adhesive to the outer edge of the rubber material and / or the inner edge of the fabric, laminating them, and then heat-pressing them at 80-160°C. The steps include: applying a corrugated shape to the connected cloth and rubber material to obtain the positioning support piece; Includes.

[0059] As set forth herein and in the claims, the terms “includes” and “incorporates” merely indicate that the clearly identified steps and elements are included, and these steps and elements do not constitute an exclusive list, and the methods and apparatus may include other steps and elements.

[0060] Those skilled in the art will understand that, unless otherwise stated, the singular forms “one,” “the foregoing,” and “the foregoing” as used herein may also include the plural form. Furthermore, it will be understood that “plural” in this disclosure refers to two or more, and the same applies to other quantifiers.

[0061] Furthermore, it should be understood that while terms such as "first," "second," etc., are used to describe various types of information, this information should not be limited to these terms. These terms are used solely to distinguish information of the same kind from one another and do not indicate any particular order or importance. In practice, expressions such as "first," "second," etc., can be used completely interchangeably. For example, without departing from the scope of this disclosure, the first information can be called the second information, and similarly, the second information can be called the first information.

[0062] In this disclosure, unless otherwise explicitly stated or limited, the description of a first feature being "above" or "below" a second feature may include direct contact between the first and second features, or it may include contact via another feature between them, rather than direct contact. Furthermore, the description of a first feature being "above," "upper," and "upper surface" of a second feature may indicate that the first feature is directly above and diagonally above the second feature, or simply that the horizontal height of the first feature is greater than that of the second feature. The description of a first feature being "below," "lower," and "underside" of a second feature may indicate that the first feature is directly below and diagonally below the second feature, or simply that the horizontal height of the first feature is lower than that of the second feature.

[0063] The embodiments described above are solely for the purpose of illustrating the technical concept and features of the present disclosure, and are preferred embodiments, intended to enable those familiar with the art to understand and implement the contents of the disclosure, and not to limit the scope of protection of the present disclosure. [Explanation of Symbols]

[0064] 110 Positioning support piece, 11 Inner ring section, 111 First inner edge, 112 First outer edge, 12 Outer ring section, 121 Second inner edge, 122 Second outer edge, 13 Connecting piece, 14 Frame, 15 Diaphragm, 16 Voice coil, 17 Front plate, 18 T-shaped yoke, 19 Magnet, 21 Inner ring section, 211 First inner edge, 212 First outer edge, 22 Outer ring section, 221 Second inner edge, 222 Second outer edge, 23 Connecting piece, 24 Frame, 25 Diaphragm, 26 Voice coil, 27 Front plate, 28 T-shaped yoke, 29 Magnet

Claims

1. A speaker positioning support piece, An inner ring portion having an annular first inner edge and a first outer edge, It includes an outer ring portion having an annular second inner edge and a second outer edge, The material of the inner ring portion is cloth and the material of the outer ring portion is rubber, or the material of the inner ring portion is rubber and the material of the outer ring portion is cloth. The positioning support piece is characterized in that the inner ring portion and the outer ring portion are each wavy, and each has a wave crest and a wave trough, and the first outer edge and the second inner edge are fixedly connected.

2. A positioning support piece according to claim 1, A positioning support piece characterized in that the first outer edge and the second inner edge are stacked on top of each other.

3. A positioning support piece according to claim 1 or 2, A positioning support piece characterized in that the first outer edge and the second inner edge are bonded together with an adhesive.

4. A positioning support piece according to claim 3, A positioning support piece characterized in that the first outer edge and the second inner edge are fixed by heat pressing after applying an adhesive.

5. A positioning support piece according to any one of claims 1 to 4, The positioning support piece is characterized in that the first outer edge and the second inner edge are located between one wave crest of the inner ring portion and one wave trough of the outer ring portion, or between one wave trough of the inner ring portion and one wave crest of the outer ring portion.

6. A positioning support piece according to any one of claims 1 to 5, characterized in that the area ratio of the inner ring portion to the outer ring portion is 1:(1.5 to 3).

7. A positioning support piece according to any one of claims 1 to 6, characterized in that the inner ring portion exhibits a wavy shape from the first inner edge to the first outer edge, and the outer ring portion exhibits a wavy shape from the second inner edge to the second outer edge.

8. A positioning support piece according to claim 7, The positioning support piece further includes a connecting piece, the connecting piece extending outward from the second outer edge along a single plane, and the connecting piece and the outer ring portion are integrally formed.

9. A positioning support piece according to claim 7, A positioning support piece characterized in that the number of wave crests in the inner ring portion is less than the number of wave crests in the outer ring portion, and the distance between the wave crests and wave troughs on the inner ring portion and the outer ring portion is equal.

10. A positioning support piece according to any one of claims 1 to 9, The positioning support piece is characterized in that the cloth is cotton cloth and the rubber contains nitrile rubber.

11. A positioning support piece according to any one of claims 1 to 10, A positioning support piece characterized in that the inner ring portion is a single-layer structure made of cloth or a coated cloth, the outer ring portion is a single-layer structure made of rubber, or the outer ring portion is a single-layer structure made of cloth or a coated cloth, and the inner ring portion is a single-layer structure made of rubber.

12. These are car speakers, An automotive speaker comprising a positioning support piece according to any one of claims 1 to 11, wherein the automotive speaker is an ultra-low frequency speaker or a low frequency speaker for mounting in an automobile.

13. A method for manufacturing a positioning support piece according to any one of claims 1 to 11, The aforementioned manufacturing method is The steps include cutting the cloth into a ring shape to use as the base material for the inner ring, The steps include providing an annular rubber material to serve as the base material for the outer ring, The process involves applying adhesive to the outer edge of the fabric and / or the inner edge of the rubber material, laminating them, and then heat-pressing them at 80-160°C. The step of applying a corrugated shape to the connected cloth and rubber material to obtain the positioning support piece is included, or Or, The steps include providing an annular rubber material to be used as the base material for the inner ring, The steps include cutting the cloth into a ring shape to use as the base material for the outer ring, The process involves applying adhesive to the outer edge of the rubber material and / or the inner edge of the cloth, laminating them, and then heat-pressing them at 80-160°C. The steps include: applying a corrugated shape to the connected cloth and rubber material to obtain the positioning support piece; A manufacturing method characterized by including the following.

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