speaker

Abstract

The present disclosure provides a loudspeaker, which includes: a support structure, the support structure includes a bracket; a vibration structure, the vibration structure includes a folding ring, the folding ring includes an arc-shaped portion and an outer edge connected to the bracket; wherein the outer edge of the folding ring extends downward, abuts and connects with the outer edge of the top of the bracket, and the outer edge of the folding ring does not exceed the outermost end of the arc-shaped portion in the radial direction. The above structure increases the effective vibration area of ​​the loudspeaker, thereby improving the sensitivity of the loudspeaker.

Description

Technical Field

[0001] The present disclosure relates to a speaker, and more particularly, to a speaker with an improved surround structure. Background Art

[0002] At present, with the increasing popularity of traditional speakers and smart speakers in the market, consumers have higher and higher requirements for sound quality. As the core component of the speaker, the specific design requirements for the speaker may include one or more of the following aspects: (1) the speaker can withstand high power; (2) the speaker has a low resonant frequency; (3) the speaker has extremely high sensitivity; (4) the speaker size is as small as possible; (5) the speaker has low distortion.

[0003] The effective vibration area of ​​a speaker is an important factor affecting the sensitivity of the speaker. On the one hand, the market needs thinner and smaller speakers, and on the other hand, the reduction in the volume of the speaker may reduce the effective vibration area, which may cause a decrease in the sensitivity of the speaker.

[0004] Therefore, it is necessary to provide a speaker which has an effective vibration area as large as possible under a certain outer diameter size restriction. Summary of the invention

[0005] The present disclosure provides a loudspeaker having an effective vibration area as large as possible.

[0006] According to an embodiment of the present disclosure, a speaker is provided, comprising a supporting structure, the supporting structure comprising a bracket; a vibration structure, the vibration structure comprising a folded ring, the folded ring comprising an arc-shaped portion and an outer edge connected to the bracket; wherein the outer edge of the folded ring extends downward, abuts and is connected to the outer edge of the top of the bracket, and the outer edge of the folded ring does not radially exceed the outermost end of the arc-shaped portion in the radial direction.

[0007] Optionally, the outer edge of the folding ring extends vertically downward, and the outer edge of the top of the bracket has a surface that matches it. Optionally, the lower edge of the outer edge of the folding ring does not exceed the lower edge of the outer edge of the top of the bracket, and the bracket includes a horizontal edge extending radially outward along the lower edge of the outer edge of the top.

[0008] Optionally, the arc-shaped portion of the fold ring is symmetrical with respect to an axis extending from a highest point of the arc-shaped portion along a vertical direction of the speaker.

[0009] Optionally, the arcuate portion of the fold ring is asymmetric relative to an axis extending from a highest point of the arcuate portion along a vertical direction of the speaker, and the highest point is radially offset outward or radially offset inward relative to a midpoint of a width of the arcuate portion.

[0010] Optionally, the highest point of the fold ring forms a wave shape in the horizontal direction of the speaker.

[0011] Optionally, the outer edge of the folding ring is connected to the bracket by bonding or snapping.

[0012] Optionally, the vibration structure further includes a spring wave, and an outer edge of the spring wave is connected to the bracket in a vertical direction.

[0013] Optionally, the folding ring is made of one or more of rubber, polyurethane and foam.

[0014] Optionally, the loudspeaker is an axisymmetric loudspeaker or a non-axisymmetric loudspeaker. Optionally, the loudspeaker may be a runway-type loudspeaker or a square loudspeaker.

[0015] Optionally, the speaker includes a magnetic circuit system, and the magnetic circuit system includes a magnetic gap; the vibration structure also includes a spring wave and a voice coil connected to the spring wave, which can be suspended in the magnetic gap.

[0016] Alternatively, the speaker may be a passive radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 shows a cross-sectional view of a speaker according to an embodiment of the present disclosure;

[0018] Figure 2 yes Figure 1 An exploded view of the speaker shown;

[0019] Figure 3A shows a top view of a speaker according to an embodiment of the present disclosure;

[0020] Figure 3B yes Figure 3A A cross-sectional view of the loudspeaker taken along section AA shown;

[0021] Figure 3C yes Figure 3B An enlarged view of the connection between the folding ring and the bracket;

[0022] Figure 4A-4C is a schematic diagram of different forms of folding rings according to an embodiment of the present disclosure, and Figure 4D Is used as Figures 4A-4C A top view and an AA cross-sectional view of a wavy folding ring of different forms of folding rings;

[0023] Figure 5 A schematic diagram showing an effective vibration radius of a loudspeaker according to the present disclosure; and

[0024] Figure 6A comparison diagram of the sound pressure level curves obtained by adopting a horizontal connection method and a vertical connection method when the maximum outer diameter of the loudspeaker is the same is shown. DETAILED DESCRIPTION

[0025] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and cannot be understood as limiting the present disclosure.

[0026] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present disclosure.

[0027] Figure 1-2 A speaker 100 according to an embodiment of the present disclosure is shown, wherein Figure 1 is a cross-sectional view, Figure 2 is an exploded view. Figure 3A shows a top view of a speaker according to an embodiment of the present disclosure; Figure 3B yes Figure 3A A cross-sectional view of section AA of the loudspeaker shown; Figure 3C yes Figure 3B An enlarged view of the connection between the folding ring and the bracket.

[0028] The loudspeaker 100 includes a vibration structure, a magnetic circuit system, and a support structure. The vibration structure may include a folding ring 120, a voice coil 122, a dust cover 124, a spring 126, and a diaphragm 128. The magnetic circuit system may include a main magnet 160, a secondary magnet 162, an upper pole piece 164, and a lower pole piece 166. The support structure may include a bracket 140. The bracket 140 is used to accommodate the vibration structure and the magnetic circuit system. The loudspeaker disclosed in the present invention is not limited thereto and may have more or fewer components.

[0029] In the vibration structure, the radial outer edge of the folding ring 120 is connected to the bracket 140, and the radial inner edge thereof is connected to the diaphragm 128. The radial outer edge of the elastic wave 126 is connected to the bracket 140, and the radial inner edge thereof is connected to the voice coil 122. When the electrical signal (sound signal) enters the voice coil, the voice coil can vibrate in the magnetic gap along the axial direction of the speaker, and the vibration of the voice coil will drive the diaphragm to vibrate. The connection between the folding ring 120 and the bracket 140 will be described in more detail below.

[0030] like Figure 1 , Figure 3B and Figure 3C As shown, the folding ring 120 includes an outer edge 210, an arc-shaped portion 230 and an inner edge 250. The outer edge 210 of the folding ring 120 is located at the outermost side of the folding ring 120 in the radial direction and extends downward (the "upper" and "lower" here are determined relative to the placement direction of the speaker in the figure, that is, the folding ring and the diaphragm of the speaker are located at the upper part of the speaker, and the magnetic circuit system of the speaker is located at the lower part of the speaker), and is adjacent to the outer edge 310 of the top of the bracket. Figure 1 , Figure 3B and Figure 3C Only the case where the outer edge 210 of the fold extends downward in the vertical direction is shown. However, the outer edge 210 of the fold 120 is not limited to the structure that extends downward in the vertical direction of the speaker (i.e., the axial direction of the speaker), and may also include a structure that extends downward at an angle. However, the outer edge 210 of the fold does not exceed the outermost end of the arc-shaped portion 230 of the fold 120 in the radial direction in the radial direction. For example, the outer edge 210 of the fold is inclined inward relative to the outermost end of the arc-shaped portion 230 of the fold 120 in the radial direction.

[0031] The outer edge 210 of the downwardly extending folding ring 210 may be formed into a vertically downward or inclined downward structure during manufacturing.

[0032] In order to connect with the outer edge 210 of the fold ring 120, the outer edge 310 of the top of the bracket 140 can be formed to match the radial downward extension angle of the outer edge 210 of the fold ring 120, so as to maintain the outer edge 210 of the fold ring 120 and the outer edge 310 of the bracket 140. For example, when the outer edge 210 of the fold ring 120 is oriented substantially vertically downward, the outer edge 310 of the bracket is also formed substantially vertically correspondingly; when the outer edge 310 of the fold ring 120 is oriented obliquely downward, the outer edge 310 of the bracket is also formed obliquely downward at substantially the same angle.

[0033] The outer edge 210 of the folding ring 120 and the outer edge 310 of the bracket 140 can be bonded and fixed together. The adhesive 50 is located between the opposing parts of the two. In order to ensure the strength of the bonding between the two, the opposing part of the outer edge 210 of the folding ring 120 and the outer edge 310 of the bracket should be large enough. The length of the outer edge 210 of the folding ring 120 can be selected according to the size of the speaker. The folding ring and the bracket 140 can also be connected in other ways, such as a snap connection. In addition, in order to increase the strength of the connection, the thickness of the outer edge 210 of the folding ring can be greater than the thickness of other parts of the folding ring.

[0034] The folding ring can be made of various suitable materials as needed, including but not limited to rubber, polyurethane (PU), foam, cloth-based materials, paper-based materials, etc.

[0035] The above connection method between the folding ring and the bracket can also be applied to the connection between the elastic wave and the bracket. For example, the outer edge of the elastic wave extends vertically or obliquely downward or upward and is connected to the corresponding part of the bracket by bonding or other methods.

[0036] The top of the bracket 140 may further include a radial edge 330 extending radially outward along the lower edge of the outer edge 310 of the top of the bracket (eg, Figure 3C The length of the outer edge 210 of the fold ring 120 does not exceed the lower edge of the outer edge 310 of the bracket, so that the radial edge 330 can extend radially below the lower edge of the outer edge 210 of the fold ring 120. The radial edge 330 of the bracket 140 can be used to set the opening for fixing the speaker (such as Figure 3A ). In order to minimize the size of the speaker, the maximum width of the bracket can be limited to not more than the diameter D of the folding ring. Optionally, the support structure can also include a terminal 142, which is arranged on the side of the bracket 140 and is radially located inside the radial outer edge of the folding ring. The terminal 142 is connected to the lead wire of the voice coil and is used for electrical connection between the voice coil and the outside of the speaker.

[0037] The present disclosure is not limited to the structure of the bracket shown in the figures, and the bracket may also be a box or other structure suitable for accommodating and supporting the vibration structure.

[0038] Optionally, the bracket is further connected to the magnetic circuit system. In the magnetic circuit system, the main magnet 160, the upper pole piece 164 and the auxiliary magnet 162 are sequentially arranged on the lower pole piece 166 and supported by the lower pole piece 166. They can be connected together by bonding or other means. The magnetic circuit system may also include a copper cap (not shown), which is arranged on the upper pole piece 164 to reduce induced eddy currents and thus reduce distortion. The magnetic circuit system in the above-mentioned embodiment is merely exemplary, and the present disclosure is not limited to the magnetic circuit system, but can be applied to various magnetic circuit systems.

[0039] The effective vibration area of ​​the speaker is related to the distance between the highest point of the arc portion of the fold ring and the vertical axis of the speaker. In the above embodiment of the present disclosure, the connection position between the fold ring and the bracket is placed below the arc portion of the fold ring, so that the connection part of the fold ring does not occupy the width of the speaker, the outer diameter of the speaker is used to the maximum extent, the effective vibration area of ​​the speaker is increased as much as possible, and the sensitivity of the speaker is improved as much as possible.

[0040] like Figure 5 As shown in the figure, taking a circular fold as an example, the effective vibration area S is calculated by taking the distance between the highest point of the arc-shaped portion of the fold and the axis of the speaker as the effective vibration radius a. When the entire width D of the speaker is limited, the distance a between the highest point of the arc-shaped portion of the fold and the axis of the speaker can be increased as much as possible, thereby maximizing the effective vibration area S.

[0041] For other shapes of surrounds, although the calculation method of effective vibration area is different, it is related to the vertical axis of the speaker from the highest point of the surround.

[0042] In addition to adopting a structure in which the connection position between the fold ring and the bracket is placed below the arc portion of the fold ring, it is also possible to consider adopting fold rings of different shapes to increase the effective vibration area and improve the sensitivity of the speaker.

[0043] Figure 4A-4C Schematic diagrams showing different forms of folding rings according to embodiments of the present disclosure, and Figure 4D It adopts Figures 4A-4C The top view and AA cross-sectional view of the wavy fold ring obtained by the different forms of fold ring shown.

[0044] exist Figure 4A In the embodiment, the arcuate portion of the fold is symmetrical with respect to an axis extending from the highest point of the arcuate portion in the vertical direction of the loudspeaker. Figure 4B and 4C In the embodiment, the arcuate portion of the surround is asymmetric with respect to an axis extending from the highest point of the arcuate portion in the vertical direction of the loudspeaker, and the highest point is radially offset outwardly with respect to the midpoint of the width of the arcuate portion ( Figure 4B ) or radially inward displacement ( Figure 4C ).

[0045] use Figure 4B The effective vibration area of ​​the circular ring formed by the shape in the Figure 4A and 4C The circular fold formed by the shape has a larger effective vibration area.

[0046] Figure 4D It adopts Figure 4A , 4Band 4C to form a wavy fold, wherein the highest point of the fold forms a wavy shape (see 401). Figure 4D It can be seen from the AA cross-sectional view in the figure that the highest point of the arc portion corresponding to the wave crest part is offset outward, which is equivalent to Figure 4B The highest point of the arc corresponding to the trough of the wave shape is offset inwards, which is equivalent to Figure 4C One of the main functions of the fold is to ensure that the diaphragm moves along the axis without eccentricity, thereby preventing the voice coil from being rubbed in the magnetic gap. Compared with the circular fold formed in a symmetrical manner, the fold formed in this way can better limit the radial movement of the diaphragm and prevent the fold deformation, thereby improving the sensitivity of the speaker. In addition, the fold is not limited to the above-mentioned shape, and other symmetrical or asymmetrical folds can also be used. In addition, reinforcing ribs or patterns can be provided on the fold to enhance the rigidity of the fold and avoid polarization.

[0047] Figure 6 The figure shows a sound pressure level curve obtained by measuring a 66mm loudspeaker using a horizontal connection method and a vertical connection method between the folding ring and the bracket, wherein the result obtained by the horizontal connection method is represented by a dotted line, and the result obtained by the vertical connection method is represented by a solid line. The horizontal connection method between the folding ring and the bracket requires a certain size to be reserved on the outer edge of the folding ring for a stable connection with the bracket. However, the size occupied by the connection reduces the effective radius of the folding ring vibration, thereby reducing the effective vibration area, thereby reducing the sensitivity of the speaker unit. It can be seen from the above comparison results that, under the same maximum outer diameter, the sound pressure level obtained by the embodiment of the present disclosure is 2-3dB higher than that obtained by the horizontal connection method.

[0048] Although the embodiments of the present disclosure are illustrated by taking active speakers as examples, the connection method between the folding ring and the bracket can also be applied to devices such as passive radiators. Optionally, a passive radiator can be used together with an active speaker and installed on the cabinet of a sound box. The bracket of the passive radiator can be the bracket used for the active speaker in the above embodiments, or it can be the cabinet of the sound box. In addition, the connection method of the present disclosure can be used in a variety of occasions that require hanging and fixing.

[0049] Although the embodiments of the present disclosure relate to a speaker of an axisymmetric structure, the present disclosure is not limited thereto but may be applied to various other speakers such as speakers of a non-axisymmetric structure, for example, a racetrack speaker, a square speaker, and the like.

[0050] The above is only an exemplary embodiment used to illustrate the principle of the present disclosure, and is not intended to limit the protection scope of the present disclosure. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also within the protection scope of the present disclosure.

Claims

1. A speaker, comprising: A support structure, the support structure comprising a bracket; A vibration structure, wherein the vibration structure comprises a folding ring, wherein the folding ring comprises an arc-shaped portion and an outer edge connected to the bracket; The outer edge of the folding ring extends downward to abut and connect with the outer edge of the top of the bracket, and the outer edge of the folding ring does not exceed the outermost end of the arc portion in the radial direction. The outer edge of the top of the bracket matches with the outer edge of the folding ring extending downward, and the bracket does not exceed the outermost end of the arc portion in the radial direction.

2. The loudspeaker according to claim 1, characterized in that: The outer edge of the folding ring extends vertically downward, and the outer edge of the top of the bracket has a surface matching with the folding ring.

3. The loudspeaker according to claim 1 or 2, characterized in that: The lower edge of the outer edge of the fold ring does not exceed the lower edge of the outer edge of the top of the bracket, and the bracket includes a horizontal edge extending radially outward along the lower edge of the outer edge of the top.

4. The loudspeaker according to claim 1 or 2, characterized in that: The arc portion of the fold is symmetrical with respect to an axis extending from a highest point of the arc portion along a vertical direction of the speaker.

5. The loudspeaker according to claim 1 or 2, characterized in that: The arcuate portion of the fold is asymmetric relative to an axis extending from a highest point of the arcuate portion in a vertical direction of the speaker, and the highest point is radially offset outward or radially offset inward relative to a midpoint of a width of the arcuate portion.

6. The loudspeaker according to claim 1 or 2, characterized in that: The highest point of the fold ring forms a wave shape in the horizontal direction of the speaker.

7. The loudspeaker according to claim 1 or 2, characterized in that: The outer edge of the folding ring is connected to the bracket by bonding or snapping.

8. The loudspeaker according to claim 1 or 2, characterized in that: The vibration structure also includes a spring wave, and the outer edge of the spring wave is connected to the bracket in a vertical direction.

9. The loudspeaker according to claim 1 or 2, characterized in that: The folding ring is made of one or more of rubber, polyurethane and foam.

10. The loudspeaker according to claim 1 or 2, characterized in that: The loudspeaker is an axisymmetric loudspeaker or a non-axisymmetric loudspeaker.

11. The loudspeaker according to claim 1 or 2, characterized in that: The speaker is a racetrack speaker or a square speaker.

12. The loudspeaker according to claim 1 or 2, characterized in that Also includes: A magnetic circuit system, the magnetic circuit system comprising a magnetic gap; The vibration structure also includes a spring wave and a voice coil connected to the spring wave, which can be suspended in the magnetic gap.

13. The loudspeaker according to claim 1 or 2, characterized in that: The loudspeaker is a passive radiator.

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