Speaker and its damper, Vehicle audio system

Abstract

The application discloses a loudspeaker, a speaker cone thereof and a vehicle-mounted audio system. The loudspeaker comprises a support, a diaphragm, a voice coil and a speaker cone. The diaphragm is hung on an open end of the support, the voice coil is connected to the diaphragm, and the speaker cone is connected to the diaphragm or the voice coil. The main body of the speaker cone comprises a plurality of elastic strips which are arranged at intervals along the circumferential direction of the voice coil. The elastic strips have inner ends close to the voice coil and outer ends far away from the voice coil. The loudspeaker of the application adopts a speaker cone with high elasticity and low distortion, and has a wide frequency response range and low distortion.

Description

Technical Field

[0001] This invention relates to a loudspeaker and its spider, and a vehicle audio system. Background Technology

[0002] The spider is a key elastic component of a loudspeaker, its main function being to limit the radial displacement of the voice coil and ensure that the voice coil vibrates linearly along the vibration axis in the magnetic field. Currently, positioning supports are typically made of woven materials, rubber, etc., which have the following drawbacks:

[0003] 1. Insufficient elasticity and fatigue issues. Traditional spiders have a limited range of elastic deformation. They are prone to plastic deformation during high-frequency vibration, which can cause voice coil misalignment and distortion. After long-term use, the elasticity deteriorates significantly, affecting the lifespan of the speaker.

[0004] 2. Narrow frequency response range. The rigid or flexible single material of the spider cannot simultaneously achieve high-frequency response speed and low-frequency vibration stability, resulting in large fluctuations in the frequency response curve in the mid-to-high frequency range, which limits the sound quality performance.

[0005] 3. Poor heat dissipation. Traditional spiders are installed inside the speaker, such as in the internal space between the diaphragm and the magnetic circuit. The heat generated during operation is difficult to dissipate quickly and effectively, and the high-temperature environment will accelerate the aging of the spider materials.

[0006] 4. Structural design limitations. Traditional planar or simple pleated structures of spars are prone to stress concentration during vibration, resulting in a high risk of localized fracture.

[0007] The information disclosed in the background section is only intended to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0008] This invention provides a loudspeaker that employs a highly elastic, low-distortion spider, exhibiting a wide frequency response range and low distortion. This invention also provides a highly elastic, low-distortion spider.

[0009] One aspect of the present invention relates to a loudspeaker, comprising a bracket, a diaphragm, a voice coil, and a spider, the diaphragm being suspended from an open end of the bracket, the voice coil being connected to the diaphragm, and the spider being connected to either the diaphragm or the voice coil; the body of the spider includes a plurality of elastic strips spaced apart along the circumference of the voice coil, the elastic strips having an inner end closer to the voice coil and an outer end farther from the voice coil.

[0010] In some preferred embodiments, there is a gap between adjacent elastic strips.

[0011] In some preferred embodiments, the elastic wave includes an outer ring, and the outer end of the elastic strip is connected to the outer ring; or, the elastic wave includes a central portion, and the inner end of the elastic strip is connected to the central portion.

[0012] In some preferred embodiments, the elastic wave includes an outer ring and a central portion, the outer ring surrounds the central portion, the outer end of the elastic strip is connected to the outer ring, the inner end of the elastic strip is connected to the central portion, and adjacent elastic strips are connected only through the outer ring and the central portion.

[0013] In some preferred embodiments, the length of the elastic strip is greater than the distance between the inner edge of the outer ring and the outer edge of the center portion.

[0014] In some preferred embodiments, the elastic wave has a surface opposite to the diaphragm, the surface being planar or conical, and the elastic strip has one or more bends that bend and extend within the surface.

[0015] In some preferred embodiments, the diaphragm has a front facing forward and outward of the speaker, and a back facing rearward; the spider is located on the front side of the diaphragm, and the outer ring of the spider is connected to the open end of the bracket; the voice coil has a front end portion extending to the front side of the diaphragm, the center portion being connected to the front end portion of the voice coil, and the rear end portion of the voice coil being inserted into a magnetic circuit system behind the diaphragm, the magnetic circuit system being fixed to the bracket.

[0016] In some preferred embodiments, the support includes a hollow, open-front cup-shaped portion, and the magnetic circuit system is disposed within the cup-shaped portion and fixed to the inner side of the closed base plate of the cup-shaped portion.

[0017] In some preferred embodiments, the spider is disposed between the diaphragm and the magnetic circuit system, a central hole is provided on the central portion, the voice coil passes through the central hole, the central portion is connected to the voice coil, and the outer ring is connected to the inner surface of the bracket.

[0018] In some preferred embodiments, the main body is centrally symmetrical.

[0019] In some embodiments, the main body is located on a plane. In other preferred embodiments, the main body is located on a conical surface, with the inner end of the elastic strip higher than or lower than the outer end.

[0020] In some preferred embodiments, the elastic strip is a slender plastic or metal strip, the aspect ratio or length-to-width ratio of the elastic strip is 5 to 5000, and the elastic strip has a circular or polygonal cross-section.

[0021] In some preferred embodiments, the spring is integrally injection molded from plastic or integrally punched from a metal sheet.

[0022] In some preferred embodiments, the spider is exposed on the outside of the speaker. In some more preferred embodiments, the spider is positioned on the front side of the diaphragm. The heat generated by the spider during operation can be dissipated quickly and effectively, preventing the formation of a high-temperature environment inside the speaker.

[0023] A second aspect of the invention relates to a spring wave, which is the spring wave in the aforementioned loudspeaker.

[0024] A third aspect of the invention relates to an in-vehicle audio system comprising the aforementioned speaker.

[0025] In some embodiments, the in-vehicle audio system is a pedestrian warning device.

[0026] The present invention adopts the above solution, which has the following advantages compared with the prior art:

[0027] The speaker of this invention employs a novel spider structure, which exhibits superior elasticity, reduced elastic decay, and avoids impacting speaker lifespan due to spider fatigue. The spider itself possesses good strength, increasing the flexibility of speaker structural design and facilitating a wider frequency response. The speaker's spider exhibits high elasticity, low distortion, good heat dissipation, and structural stability. Attached Figure Description

[0028] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is an exploded view of the structure of a loudspeaker according to Embodiment 1 of the present invention.

[0030] Figure 2 This is a top view of a loudspeaker according to Embodiment 1 of the present invention.

[0031] Figure 3 for Figure 2 Sectional view along the AA direction.

[0032] Figure 4 for Figure 3 A magnified view of a section at point B.

[0033] Figure 5 This is a bottom view of a slingshot according to Embodiment 1 of the present invention.

[0034] Figure 6This is a perspective view of a spring wave according to Embodiment 1 of the present invention.

[0035] Figure 7 This is an exploded view of a loudspeaker according to Embodiment 2 of the present invention.

[0036] Figure 8 This is a cross-sectional view of a loudspeaker according to Embodiment 2 of the present invention.

[0037] Figure 9 This is a perspective view of a spring wave according to Embodiment 2 of the present invention.

[0038] Figure 10 This is an exploded view of a loudspeaker according to Embodiment 3 of the present invention.

[0039] Figure 11 This is a perspective view of a spring wave according to Embodiment 3 of the present invention.

[0040] Figure 12 This is a top view of a loudspeaker according to Embodiment 4 of the present invention.

[0041] Figure 13 This is a cross-sectional view of a loudspeaker according to Embodiment 4 of the present invention.

[0042] In the above attached figures,

[0043] 100. Speaker;

[0044] 1. Support frame; 11. Basin stand; 111. Open end; 112. Cup-shaped part; 12. Outer cylinder; 121. Welding piece; 122. Padding cotton;

[0045] 2. Diaphragm; 21. Dust cap;

[0046] 3. Voice coil;

[0047] 4. Magnetic circuit system; 40. Magnetic gap; 41. Magnetic conductor; 42. Magnet; 43. Front panel;

[0048] 5. Spinner; 50. Main body; 501. Elastic strip; 502. Bending part; 503. Outer end; 504. Inner end; 51. Outer ring; 52. Center part; 522. Voice coil groove. Detailed Implementation

[0049] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] In this article, "front" and "rear" are defined with reference to the speaker's vibration axis. "Front" refers to the direction of sound wave radiation along the vibration axis, and "outer" refers to the opposite direction. The directional terms "up," "down," and "horizontal" are intended to help those skilled in the art understand the speaker's structure and are not used to limit the speaker's position in its intended use. For example, a speaker can be mounted on a horizontal, inclined, or vertical surface of a vehicle, with the diaphragm facing up, down, front, back, left, or right.

[0051] Figures 1 to 13 The diagrams are drawn to scale. To keep the instructions concise, the proportions of each component are not listed individually. However, the proportions and positions of each component should be considered part of the contents of this instruction manual. Example 1

[0052] Figures 1 to 3 An embodiment of a loudspeaker is shown. The loudspeaker 100 is suitable for installation in a vehicle as part of an in-vehicle audio system. The loudspeaker 100 can be used outside the vehicle, and the in-vehicle audio system can be a pedestrian warning system (AVAS), installed on a new energy vehicle, to emit a warning sound when the new energy vehicle is traveling at low speed.

[0053] The loudspeaker 100 is specifically a moving-coil loudspeaker, employing a traditional electroacoustic conversion principle. (See reference...) Figures 1 to 8 As shown, the loudspeaker 100 mainly includes a bracket 1, a diaphragm 2, a voice coil 3, a magnetic circuit system 4, and a spider 5. The diaphragm 2 is suspended on the open end of the bracket 1, and the voice coil 3 is connected to the diaphragm 2 and driven by the magnetic circuit system 4; the spider 5 is connected to the diaphragm 2 and / or the voice coil 3 to suppress the diaphragm 2 and / or the voice coil 3 from moving in directions other than the expected direction, so that the diaphragm 2 reciprocates along the expected vibration axis, producing a piston-like motion mode.

[0054] The bracket 1 is made of a material with good strength, such as plastic or metal. The bracket 1 is preferably a single, integral part, for example, injection molded from plastic. Referring to Figures 1 and 2, the bracket 1 includes a frame 11 with an open end 111 for connecting the diaphragm 2, etc. The bracket 1 may also have a cup-shaped portion 112, which is hollow and open at only one end, with a closed bottom plate. The cup-shaped portion 112 essentially functions as a rear cover, enclosing the magnetic circuit system 4 within it, serving as a physical protective structure for the magnetic circuit system 4. The cup-shaped portion 112 is generally hollow and closed at only one end, containing a cylindrical cavity. The portion between the open end 111 and the cup-shaped portion 112 may have a perforated section to connect the spaces inside and outside the frame 11, allowing the speaker 100 to have a larger rear cavity.

[0055] The bracket 1 also includes a hollow outer cylinder 12 with open ends, and a speaker frame 11 is disposed inside the outer cylinder 12. The open end 111 of the speaker frame 11 is fixedly connected to the top end of the outer cylinder 12, and the outer cylinder 12 covers the speaker frame 11 inside. A solder tab 121 may be provided on the outer cylinder 12 for connecting to the lead wire of the voice coil 3 to receive an electrical signal as a sound source. An elastic porous pad 122 is connected to the bottom end of the outer cylinder 12. The bottom end of the outer cylinder 12 is mounted on a vehicle, and the pad 122 is located between the outer cylinder 12 and the vehicle to reduce vibration transmitted from the vehicle to the speaker 100.

[0056] like Figure 1 and Figure 3 As shown, the diaphragm 2 includes a cone with an open tip, and the cone as a whole is truncated conical in shape. The cone can be made of paper, fabric, non-woven fabric, plastic sheet, etc., and has good rigidity. The cone can be suspended from the open end 111 of the support 1 by a surrounding member, and the cone is located inside the support 1. The surrounding member is elastic, thereby allowing the cone to vibrate back and forth along the vibration axis, producing a piston-like motion. The surrounding member can be made of rubber or fabric or non-woven fabric composited with thermoplastic / thermosetting resin. The surrounding member and the cone can be integrated or separate; if the surrounding member and the cone are two independent parts, they are fixed together by adhesive. Taking the orientation shown in the figure as an example, the outer edge of the cone is suspended from the open end 111 (upper end) of the support 1 by the surrounding member, and the tip of the cone is lower than its outer edge; viewed along the direction perpendicular to the vibration axis, the diaphragm 2 is basically completely covered by the support 1. In some other embodiments, the diaphragm 2 can be a planar diaphragm 2 or a dome diaphragm 2 with a forward-convex center.

[0057] like Figure 3 As shown, the voice coil 3 is connected to the diaphragm 2, and one end of the voice coil 3 is inserted into the magnetic gap 40 of the magnetic circuit system 4. Specifically, the lower end of the voice coil 3, with the coil wound around it, is inserted into the magnetic gap 40 of the magnetic circuit system 4. The coil of the voice coil 3 is connected to an electrical signal through a pair of leads. The magnetic circuit system 4 provides a magnetic field. When the coil is energized, under the action of electromagnetic induction, the voice coil 3 will move in one direction, which is the vibration axis of the loudspeaker 100, that is, the axial center line of the voice coil 3. The bracket 1 is provided with a wiring port, in which a solder tab 121 is embedded for connecting an external cable. An audio signal can be connected to the leads of the voice coil 3 through an external cable. The voice coil 3 is provided with a through hole to allow airflow inside and outside the voice coil 3.

[0058] like Figure 1 and Figure 3As shown, the magnetic circuit system 4 includes a magnetic conductor 41 and a magnet 42, and a magnetic gap 40 includes the gap between the magnetic conductor 41 and the magnet 42. A front sheet 43 may also be stacked on the magnet 42, and the gap between the front sheet 43 and the magnetic conductor 41 is also part of the magnetic gap 40. The material of the magnetic conductor 41 can be a magnetically conductive material selected from iron, cobalt, nickel, or one or more alloys thereof, such as ferrosilicon, silicon steel, or soft magnetic ferrite. In one embodiment, the magnetic conductor 41 includes a U-shaped iron, with the magnet 42 and the front sheet 43 fixed inside the U-shaped iron, and the magnetic gap 40 formed inside the U-shaped iron, located between the inner peripheral wall of the U-shaped iron and the outer peripheral surface of the magnet 42 / front sheet 43. In another embodiment, the magnetic conductor 41 can be a T-shaped iron. The bottom of either the U-shaped iron or the T-shaped iron is fixed to the base plate of the bracket 1, specifically the base plate of the cup-shaped portion 112.

[0059] Furthermore, a mounting groove is formed at the bottom of the cup-shaped portion 112, with only one end of the mounting groove open. Figure 3 The bottom of the magnetic circuit assembly is tightly secured in the mounting groove (the upper end of the assembly). The inner surface of the mounting groove has multiple protrusions spaced apart along the circumference of the magnetic circuit assembly to hold it within the groove. Specifically, the bottom of the magnetic conductor 41 of the magnetic circuit assembly is secured in the mounting groove, fixing the magnetic circuit assembly within the cup-shaped portion 112.

[0060] The magnetic circuit system 4 is disposed within the enclosed bottom of the cup-shaped portion 112. Specifically, the bottom of the magnetic conductor 41 of the magnetic circuit system 4 is fixed to the base plate and located inside the base plate. For example, the bottom of the U-shaped iron or the base of the T-shaped iron is fixed to the inside of the base plate and is covered inside the cup-shaped portion 112. This improves the connection strength between the magnetic circuit assembly and the support 1 and provides positioning during assembly, thus facilitating assembly.

[0061] Figure 5 and Figure 6 An embodiment of a spider 5 in a loudspeaker 100 is shown. Combined with... Figures 2 to 6 As shown, the main body 50 of the spider 5 includes multiple elastic strips 501, which are spaced apart along the circumference of the voice coil 3. Each elastic strip 501 has an inner end 504 closer to the voice coil 3 and an outer end 503 farther from the voice coil 3. The main body 50 is composed of these multiple elastic strips 501, which is significantly different from traditional corrugated or sheet-type spiders. The multiple elastic strips 501 are independent of each other, and there are gaps between adjacent elastic strips 501. Each elastic strip 501 can deform independently.

[0062] The elastic wave 5 includes an outer ring 51 and a central portion 52. The outer ring 51 surrounds the central portion 52. The outer end 503 of the elastic strip 501 is connected to the outer ring 51, and the inner end 504 of the elastic strip 501 is connected to the central portion 52. Adjacent elastic strips 501 are connected only through the outer ring 51 and the central portion 52. In another embodiment, the elastic wave 5 includes an outer ring 51, and the outer end 503 of the elastic strip 501 is connected to the outer ring 51. Adjacent elastic strips 501 are connected only through the outer ring 51. In yet another embodiment, the elastic wave 5 includes a central portion 52, and the inner end 504 of the elastic strip 501 is connected to the central portion 52. Adjacent elastic strips 501 are connected only through the central portion 52.

[0063] The length of the elastic strip 501 is greater than the distance between the inner edge of the outer ring 51 and the outer edge of the center portion 52. The elastic strip 501 has one or more bends 502, allowing the elastic strip 501 to have a larger range of elastic deformation. The bends 502 are preferably smooth transitions, such as arc-shaped bends 502. The diaphragm 5 has a surface opposite to the diaphragm 2, which is a planar or conical surface, within which the bends 502 of the elastic strip 501 bend and extend. For example, in Figure 3 In the example shown, the overall shape of the spring wave 5 is a truncated cone. The first surface of the main body 50 of the spring wave 5, which is close to and opposite to the diaphragm 2, is a conical surface. The bent portion 502 of the elastic strip 501 bends along this first surface, meaning that the surface of the elastic strip 501 close to the diaphragm 2 is entirely within the first surface. Furthermore, the second surface of the main body 50 of the spring wave 5, which is farther from the diaphragm 2 (opposite to and parallel to the first surface), is also a conical surface, and the surface of the elastic strip 501 farther from the diaphragm 2 (front or rear surface) is also entirely within the second surface.

[0064] The diaphragm 2 has a front facing forward and outward of the speaker 100, and a back facing backward. In this embodiment, the spider 5 is located on the front side of the diaphragm 2, and the outer ring 51 of the spider 5 is connected to the open end 111 of the bracket 1, for example, by adhesive bonding or ultrasonic welding. The voice coil 3 has a front end portion extending to the front side of the diaphragm 2, and the center portion 52 of the spider 5 is connected to the front end portion of the voice coil 3. Figure 4 As shown, a voice coil groove 522 is provided on the rear surface of the center part 52 of the spider 5, and the front end of the voice coil 3 is inserted into the voice coil groove 522 and glued together with glue.

[0065] The main body 50 of the Spiral 5 is centrally symmetrical, as... Figure 2 and Figure 5As shown, multiple elastic strips 501 form a centrally symmetrical pattern with the vibration axis as the center. In this embodiment, the main body 50 is entirely located on a conical surface, and the inner end 504 of the elastic strip 501 is lower than the outer end 503. In another embodiment, the main body 50 is entirely located on a conical surface, and the inner end 504 of the elastic strip 501 is higher than the outer end 503. In yet another embodiment, the main body 50 is entirely located on a plane, and the elastic wave 5 can be horizontal and perpendicular to the vibration axis of the speaker 100.

[0066] In this embodiment, the main body 50 of the elastic wave 5 forms a truncated cylinder that is larger at the front and smaller at the back, that is, the diameter of the front part of the main body 50 is larger than the diameter of the rear part, and the elastic wave 5 is suspended in the bracket 1 in a concave state. The central part 52 of the elastic wave 5 is flat, and the elastic wave 5 as a whole also forms a truncated cone that is larger at the front and smaller at the back, with the outer diameter of the outer ring 51 being larger than the diameter of the central part 52.

[0067] The elastic strip 501 is a slender plastic or metal strip with an aspect ratio (length to width or length to diameter) of 5 to 5000. The elastic strip 501 has a circular or polygonal cross-section; for example, the cross-section perpendicular to its length direction can be circular, triangular, rectangular, or rounded rectangular. The elastic wave 5 can be integrally injection molded from plastic or integrally stamped from a metal sheet. The plastic can include polypropylene, or the elastic wave 5 can be made of a metal alloy such as stainless steel.

[0068] An embodiment of an in-vehicle audio system is also provided, which includes the speaker 100 described above. The in-vehicle audio system is installed in a vehicle and plays sound into or outside the vehicle's cabin. Example 2

[0069] Figures 7 to 9 Another embodiment of the loudspeaker 100 and another embodiment of the spider 5 are shown. (See also...) Figures 7 to 9 As shown, the spring wave 5 is located on the front side of the diaphragm 2, and the inner end 504 of the elastic strip 501 is higher than the outer end 503. The main body 50 of the spring wave 5 forms a truncated cylinder with a smaller front and a larger rear, that is, the diameter of the front part of the main body 50 is smaller than the diameter of the rear part, and the spring wave 5 is suspended outside the support 1 in a forward-protruding state. The central part 52 of the spring wave 5 is flat, and the spring wave 5 as a whole also forms a truncated cone with a smaller front and a larger rear, and the outer diameter of the outer ring 51 is larger than the diameter of the central part 52. Other aspects are basically the same as in Embodiment 1. Example 3

[0070] Figure 10 and Figure 11 Another embodiment of a loudspeaker 100 and another embodiment of a spider 5 are shown. (Refer to...) Figure 10 and Figure 11The spider 5 is located on the front side of the diaphragm 2, and the main body 50 is situated on a plane perpendicular to the vibration axis of the speaker 100. The spider 5 is also horizontal and perpendicular to the vibration axis of the speaker 100. The central part 52 of the spider 5 is flat, and the spider 5 as a whole is also flat. The spider 5 covers the open end 111 of the support 1 and does not protrude forward or recede backward. Example 4

[0071] Figure 12 and Figure 13 Another embodiment of a loudspeaker 100 is shown. (Refer to...) Figure 12 and Figure 13 The spider 5 is located between the diaphragm 2 and the magnetic circuit system 4. A central hole is provided on the central part 52 of the spider 5, through which the voice coil 3 passes. The central part 52 is connected to the voice coil 3, and the outer ring 51 is connected to the inner surface of the support 1.

[0072] A dust cap 21 is attached to the cone, covering the open tip of the cone to prevent dust, foreign objects, etc. from entering the speaker 100. The material of the dust cap 21 and the cone can be the same, and they can be integral or glued together. Taking the orientation shown in the attached figure as an example, the top of the dust cap 21 is lower than or level with the outer edge of the cone; viewed along the direction perpendicular to the vibration axis, the diaphragm 2 and the dust cap 21 are basically completely covered by the bracket 1.

[0073] In embodiments 1 to 3, the spider 5 is disposed on the front side of the diaphragm 2. Besides preventing the diaphragm 2 from vibrating in directions other than intended, it also serves as a grille or mesh for the speaker 100, protecting the diaphragm 2. When the speaker 100 of embodiments 1 to 3 is used in an outdoor environment (such as a pedestrian warning device), a separate grille or mesh may not be necessary. When the speaker 100 of embodiment 4 is used in an outdoor environment, it may further include a grille disposed on the front side of the diaphragm 2 to prevent foreign objects from impacting the diaphragm 2, and also to prevent water droplets from splashing onto the diaphragm 2 or to prevent water accumulation.

[0074] In the loudspeaker 100 of embodiments 1 to 3, the front section of the voice coil 3 can be sealed by the center part 52 of the spider 5, so that no additional dust cap is required.

[0075] The speaker 100 in this embodiment employs a novel spider 5 structure, which solves the heat dissipation problem of traditional spiders 5, as well as the problems of insufficient elasticity and fatigue in traditional spiders 5. Furthermore, the speaker 100 has a wider frequency range.

[0076] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0077] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar.

[0078] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0079] The above embodiments are only for illustrating the technical concept and features of the present invention, and are preferred embodiments. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the scope of protection of the present invention.

Claims

1. A loudspeaker comprising a bracket, a diaphragm, a voice coil, and a spider, the diaphragm being suspended from an open end of the bracket, the voice coil being connected to the diaphragm, and the spider being connected to either the diaphragm or the voice coil; characterized in that, The main body of the spring includes multiple elastic strips, which are spaced apart along the circumference of the voice coil. Each elastic strip has an inner end closer to the voice coil and an outer end farther from the voice coil. The elastic wave includes a central portion, and the inner end of the elastic strip is connected to the central portion; The diaphragm has a front facing forward and outward of the speaker, and a back facing backward. The spider is located on the front side of the diaphragm. The voice coil has a front end portion extending to the front side of the diaphragm. The central portion is connected to the front end portion of the voice coil. The front end portion of the voice coil is closed by the central portion of the spider.

2. The loudspeaker according to claim 1, characterized in that, There is a gap between adjacent elastic strips.

3. The loudspeaker according to claim 1, characterized in that, The elastic wave includes an outer ring, and the outer end of the elastic strip is connected to the outer ring.

4. The loudspeaker according to claim 1, characterized in that, The elastic wave includes an outer ring that surrounds the central portion, the outer end of the elastic strip is connected to the outer ring, and adjacent elastic strips are connected only through the outer ring and the central portion.

5. The loudspeaker according to claim 4, characterized in that, The length of the elastic strip is greater than the distance between the inner edge of the outer ring and the outer edge of the center portion.

6. The loudspeaker according to claim 5, characterized in that, The elastic wave has a surface opposite to the diaphragm, the surface being a plane or a cone, and the elastic strip has one or more bends that bend and extend within the surface.

7. The loudspeaker according to claim 4, characterized in that, The outer ring of the spider is connected to the open end of the bracket; the rear end of the voice coil is inserted into the magnetic circuit system behind the diaphragm, and the magnetic circuit system is fixed to the bracket.

8. The loudspeaker according to claim 7, characterized in that, The bracket includes a hollow, open-front cup-shaped portion, and the magnetic circuit system is disposed inside the cup-shaped portion and fixed to the inner side of the closed base plate of the cup-shaped portion.

9. The loudspeaker according to any one of claims 1 to 8, characterized in that, The main body is centrally symmetrical and the entire main body is located on a plane; or the entire main body is located on a conical surface, and the inner end of the elastic strip is higher than the outer end or the inner end is lower than the outer end.

10. The loudspeaker according to any one of claims 1 to 8, characterized in that, The elastic strip is a slender plastic or metal strip with an aspect ratio of 5 to 5000 and a circular or polygonal cross-section; or, the elastic wave is integrally injection molded from plastic or integrally punched from a metal sheet; or, the elastic wave is exposed on the outside of the speaker.

11. The loudspeaker according to claim 1, characterized in that, A voice coil groove is formed on the rear surface of the center portion of the spider, and the front end of the voice coil is inserted into the voice coil groove and bonded together with glue.

12. A type of spring wave, characterized in that, The spring wave is the spring wave in a loudspeaker as described in any one of claims 1 to 10.

13. A vehicle-mounted audio system, characterized in that, Includes the loudspeaker as described in any one of claims 1 to 10.

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