Loudspeaker

Abstract

A loudspeaker comprises a casing, a cup body, a voice coil and a damper. The outer edge of the damper is arranged towards the bottom end of the cup body, and the inner edge of the damper is connected to the U-shaped iron or the T-shaped yoke. The cup body is provided with a top end directly facing the vibrating diaphragm, the voice coil, the damper and at least one part of the cup body are all positioned in the casing, and the casing comprises at least one opening positioned on the side wall so as to expose a part of the bottom end of the cup body.

Description

Technical Field

[0001] The present invention relates to a loudspeaker, and more particularly to a loudspeaker having a long - stroke driver with a high aspect - ratio support system. Background Art

[0002] Conventional loudspeakers use a circular spider (support element), typically disposed around the voice coil. Generally, such loudspeakers are circular. However, modern audio systems often require more integrated bass performance, especially to achieve the performance of a woofer in a single product without a separate woofer enclosure and its associated electronics. This situation typically occurs when form factor is prioritized over other aspects of system design. Typical examples include monitor / display woofers, all - in - one soundbars, and thin - form - factor network audio products, such as those integrating WIFI and Bluetooth. Such systems generally require a high - aspect - ratio (non - circular) form factor, combined with high driving power, to provide as much strong bass performance as possible within limited space, especially in products with limited height. High - aspect - ratio, long - stroke drivers face multiple design challenges when optimized for smaller products. They require a large driving force for the system, which demands a powerful driver and voice coil, and also require a large moving quality to operate effectively in a relatively small volume. Due to limitations in magnetic materials, coil technology, heat - dissipation management, and adhesive properties, such high - force drivers (β - drivers) can only be achieved through a certain minimum diameter of the voice coil and spider. In addition, the high aspect - ratio of the conical element (i.e., the radiating surface) also brings acoustic - loading problems, with a tendency to tilt and wobble at large amplitudes (especially when the internal cavity pressure increases due to long stroke), which typically occurs along the long axis of the driver.

[0003] Typically, due to the narrow form factor and extended stroke, there is not enough mounting space for a circular spider, so traditionally the most robust spider designs (such as textile spiders, metal, or engineered - plastic springs) are difficult to use in narrow - form - factor drivers.

[0004] In addition, the depth of the driver must be strictly controlled to avoid exacerbating the wobble mode, causing contact between the voice coil and the motor element, and ensuring that the designed depth of the driver remains at a minimum. To enable the driver to achieve the required long stroke, the spider or support element must be designed with a certain width in the system. Summary of the Invention

[0005] The object of the present application is to provide an improved design having a high - aspect - ratio surround system.

[0006] According to a first embodiment of the present application, the present application provides a loudspeaker, comprising a housing, a cup body, a voice coil, and a spider, wherein an outer edge of the spider is disposed towards a bottom end of the cup body, and an inner edge of the spider is connected to a U-iron or a T-york, the cup body has a top end directly facing a diaphragm, wherein the voice coil, the spider, and at least a part of the cup body are all located within the housing, and the housing includes at least one opening in a side wall to expose the bottom end of the part of the cup body.

[0007] Due to the opening design of the housing, the travel of the cup body and the voice coil is increased, thereby enhancing the stability of the voice coil. Therefore, for a housing of limited size, better performance can be achieved through this long-travel design. Thus, the performance of relatively small-sized devices is improved, especially the bass performance. Therefore, a subwoofer is usually not required.

[0008] Preferably, the cup body is a frustum of a cone, having an inclined wall portion from a larger bottom end to a smaller top end, and wherein the housing includes at least one opening in a side wall, and a part of the bottom end of the cup body is located within the opening, flush with the opening, or protruding outward from the opening, such that the cup body can move longitudinally relative to the housing, and the bottom end moves within the longitudinal range of the opening.

[0009] This makes the cup body of the present application larger than that in existing feasible cases, thereby allowing a larger travel of the voice coil.

[0010] Preferably, at least two openings are respectively provided on opposite sides of the housing.

[0011] Accordingly, the bottom end of the cup body and the diameter of the cup body itself can be made larger, so as to improve performance within a housing of limited size. Different from conventional devices, the cup body of the present application is not completely limited by the housing size.

[0012] Preferably, the upper top end of the cup body has a flat annular surface.

[0013] One or more recesses may be provided on a side surface of the cup body.

[0014] One or more first recesses may be provided on the flat annular surface of the upper top end. Preferably, at least two diametrically opposed first recesses are provided.

[0015] One or more second recesses may also be provided on the side surface of the cup body. Preferably, two diametrically opposed first recesses are provided.

[0016] These recesses enable the moving suspension system and / or other components to be as close as possible to the housing of the product, thereby maximizing the travel of the voice coil in a relatively small housing or product.

[0017] Preferably, the diaphragm has an inner edge and an outer edge. The inner edge is connected to the U-shaped iron or T-shaped yoke of the speaker, and the outer edge is connected to the inner surface of the bottom end of the cup body.

[0018] Preferably, the outer edge of the diaphragm includes an extended portion that wraps around the bottom end of the cup body.

[0019] The opening length of the housing is D, which can achieve the maximum moving stroke required by the voice coil. As the size / area of the diaphragm increases, the audio performance of the speaker becomes more stable, thus improving the performance within a housing of limited size. Therefore, it is not completely restricted by the dimensions of the four walls of the housing, and the area of the diaphragm can be larger than that of a housing without an opening. That is to say, the outer diameters of the cup body and the diaphragm can be maximized within a housing of limited size while still allowing the required long stroke. Description of the Drawings

[0020] Specific embodiments of the present application will be described with reference to the drawings to illustrate the details of its structure, where:

[0021] Figure 1 is a partial cross-section of the speaker of the present application.

[0022] Figure 2 is a top view of the speaker of the present application.

[0023] Figure 3 is a plan view of another speaker of the present application.

[0024] Figure 4 is a cross-sectional view of the speaker of the present application.;

[0025] Figure 5 is a schematic diagram of another design of the speaker of the present application.

[0026] Figure 6 is a schematic diagram of another design of the speaker of the present application.

[0027] Figure 7 is a schematic diagram of another design of the speaker of the present application.

[0028] Figure 8 is a schematic diagram of the non-circular diaphragm of the speaker of the present application.;

[0029] Figure 9 is a schematic diagram of the "runway" diaphragm of the speaker of the present application

[0030] Figure 10 is a schematic diagram of an alternative design of the speaker of the present application.

[0031] Figure 11 is a partial cross-section of the opening in the side wall of the housing of the speaker of the present application and the cup body. Detailed Description of the Invention

[0032] To better understand the technical content of this application, the following provides preferred specific embodiments. As Figure 1 shown in Figure 4 , the loudspeaker includes a housing 1, in which a loudspeaker assembly including a voice coil 2, a copper ring 3, and a U-iron or T-yoke 4 is installed. Of course, the loudspeaker also includes other components, and those skilled in the relevant art can understand the existence of these components.

[0033] The spider (support element) 5 is installed between the U-iron (or T-yoke) 4 and the bottom end 10 of the cup 6. The cup 6 is generally frustum-shaped, and the clearest view can be seen in Figure 1 , whose top end 9 has a perforation 7. The cup 6 has an inclined wall portion, and the periphery of the bottom end is larger than the top surface. In the shown design, the cup 6 has a top portion 6A, and the top portion 6A presents a taper angle, while the bottom portion 6B may have a different taper angle or be cylindrical. However, this design can be varied. In some embodiments, the cup 6 may be a cone with a single taper angle from the bottom surface to the top surface.

[0034] The perforation 7 is located at the center, at the center of the top end 9 of the cup 6. The cup 6 has an extended inner edge 8, and the extended inner edge 8 extends downward from the perforation on the top surface. That is, the upper part of the housing 1 can be bent downward, and its bent end (extended inner edge 8) is connected to the voice coil 2. The downward-extended extended inner edge 8 is at an angle and protrudes inward from the longitudinal axis of the cup 6. The top end 9 of the cup 6 is far from the bottom end 10, and the bottom end 10 is connected to the spider 5. In this embodiment, as Figure 1 and Figure 4 shown, the top end 9 is inclined inward at an angle (towards the longitudinal axis of the cup 6). The top end 9 of the cup 6 (the part with a smaller diameter in the frustum shape) is generally flat and connected to the diaphragm 11. The top end 9 is preferably a flat annular surface, directly facing the diaphragm 11. This flat annular surface is generally at a 90-degree angle to the longitudinal axis of the cup 6. The top end 9 of the cup 6 can be all or part of a flat surface, and this flat surface is perpendicular to the longitudinal axis of the cup 6.

[0035] Figure 4 It also shows the surround 12 connected to the diaphragm 11. Of course, in use, the voice coil 2 is in a magnetic field and moves according to any driving signal. Of course, in use, the voice coil 2 is in a magnetic field and moves according to any driving signal, thereby causing the diaphragm 11 to move and then emit sound.

[0036] The frustum-shaped cup body 6 is installed above the voice coil 2 and the spider 5. The perforation 7 is located at the center of the top 6A of the cup body 6. In use, at least a part of the top end 30 of the voice coil 2 can protrude through the perforation 7, and at least the part passing through the perforation 7 is defined by the radial inner end 14 of the downwardly extending inner edge 8. The voice coil 2 is connected to the cup body 6 at the edge 36 of the perforation 7.

[0037] In Figure 4 , the voice coil 2 is connected to the inner edge 8 of the cup body 6 by an adhesive 17. The spider 5 is arranged towards a longitudinal end of the cup body 6, and a perforation 7 is arranged at the other longitudinal end of the cup body 6. The edge 36 of the inner edge 8 is connected to the voice coil 2. The voice coil 2, the spider 5, and at least a part of the cup body 6 are located within the housing 1.

[0038] The top end 9 of the top 6A of the cup body 6 (i.e., the part away from the bottom end 10 connected to the spider 5) is a flat annular surface and is connected to the diaphragm 11, where this flat annular surface is perpendicular to the longitudinal axis of the cup body 6. Therefore, when the voice coil 2 moves (such as Figure 1 the up and down movement shown), it will cause the corresponding movement of the cup body 6, thereby causing the corresponding movement of the diaphragm 11. It should be noted that in this embodiment, when the voice coil 2 is in a stationary state, the voice coil 2 does not contact the diaphragm 11. That is, there is a gap between the top end 30 of the voice coil 2 and the bottom surface of the diaphragm 11. It is worth noting that in another embodiment, the cup body 6 does not necessarily need to have a perforation; the top end 30 of the voice coil 2 can be directly connected to the inner surface of the top end 9 of the cup body 6, that is, the top end 30 of the voice coil 2 is covered by the top of the cup body 6 and is not exposed through a perforation.

[0039] Figure 1 and Figure 4 The other elements in

[0040] are other standard elements of the speaker mechanism and will not be described in detail here for the sake of clarity, but those skilled in the art can understand the functions of these elements.

[0040] Since the voice coil 2 protrudes through the perforation 7 in the cup body 6, a greater stroke can be provided. Accordingly, for a given size of the housing 1, a longer stroke can provide better performance. Furthermore, the performance of smaller devices can be improved, especially the bass performance. Therefore, a woofer is usually not required.

[0041] Further, in order to effectively "squeeze" a large speaker driver assembly into a small-sized housing as much as possible, the housing 1 is provided with one or more openings 16. In Figure 1 the embodiment shown, the opposite side walls 18, 20 of the housing 1 have two openings 16. These two openings 16 or windows / cuts in the housing 1 enable a part of the bottom end 10 of the cup body 6 to extend into, onto (tangent alignment), or beyond the plane of the side walls 18, 20, as shown in Figure 11As shown. That is, a part of the bottom end 10 of the cup body 6 is flush with the opening 16, located within the opening 16, or protrudes outward from the opening 16, such that the cup body 6 can move longitudinally relative to the housing 1 and the bottom end 10 thereof moves within the longitudinal range of the opening 16. Therefore, the diameter of the bottom end 10 of the cup body 6 can be maximized, enabling the cup body 6 and the surround 5 to be correspondingly larger in size.

[0042] The longitudinal length D of the opening 16 is the maximum movement stroke required to reach the voice coil 2. As the size / area of the surround 5 increases, the audio performance of the speaker becomes more stable, thereby improving the performance of the housing with limited dimensions. Therefore, the speaker of the present application is not completely limited by the wall size of the housing 1, and the area of the surround 5 can be larger than that of a housing without the opening 16. That is to say, the outer diameters of the cup body 6 and the surround 5 can be maximized in a housing with limited dimensions while still allowing the desired long stroke.

[0043] As Figure 1 and Figure 11 clearly shown, a part of the bottom end 10 of the cup body 6 is located within the opening 16, and because the bottom end 10 is circular (or oval, see Figure 2 ), in another embodiment, the bottom end 10 can actually extend slightly beyond the wall surfaces 18, 20.

[0044] Each opening 16 has a height D such that the bottom end 10 of the cup body 6 can move up and down longitudinally within the opening 16 by a maximum distance of D.

[0045] Therefore, in an embodiment as Figure 2 shown, the cross-section of the cup body 6 does not need to be circular, but can be oval or elliptical. This top view also shows how the bottom end 10 of the cup body 6 extends into the opening 16 in the lower edge portion of the side walls 18, 20 or slightly beyond the opening 16 (for example, part of the edge of the bottom end 10 is blocked by the side walls 18, 20). Additionally, the cup body 6 can also be of other shapes, and the shape of the surround 5 can also be designed to correspond to the shape of the cup body 6.

[0046] Figure 3 shows a schematic diagram of a design similar to Figure 1 wherein the cross-section of the cup body 6 is circular. Figure 3 shows how the bottom end 10 of the cup body 6 extends into the opening 16 of the side walls 18, 20 (for example, part of the edge of the bottom end 10 is blocked by the side walls 18, 20).

[0047] Of course, in the embodiments of the present application, other shapes or housings 1 or enclosures considering other factors can be used.

[0048] The setting of the opening 16 enables the use of a wider cup body than before without contacting the side walls 18, 20 of the housing 1, allowing the use of a significantly larger cup body and surround, thereby improving performance and enabling the use of a more powerful driver in a housing of limited size. This is particularly desirable in designs with small form factor considerations or for items such as "smart speakers", Bluetooth TM or Wi-Fi TM devices, etc., which are usually very compact in size but need to provide as complete a sound as possible.

[0049] Please refer to Figure 4 , the inner edge 26 of the surround 5 is connected to the U-shaped iron (or T-shaped yoke) 4 by adhesive, and the radial outer edge 27 of the surround 5 includes an extension portion 28. The extension portion 28 is generally a curved structure that surrounds at least a portion of the bottom end 10 of the cup body 6. Thereby enabling the cup body 6 to be securely fixed to the surround 5.

[0050] The top end 9 of the cup body 6 is provided with one or more substantially opposite first recesses 31, 32, as Figure 1 and Figure 2 shown. Generally, these two recesses are provided at radially opposite positions, although the number of recesses can be more or less. These elements are used to further position the moving support element and / or other elements as close as possible to the housing of the product. Also, the first recesses 31, 32 can be used to respectively place the lead-out ends of the voice coil 2, such that the two lead-out ends of the voice coil 2 are respectively located between the first recesses 31, 32 and the diaphragm 11, preventing the lead-out ends from moving out of place. Additional recesses can be provided towards the top surface of the cup body 6, and the additional recesses can include radially opposite second recesses 33, 35. The second recesses 33, 35 can be composed of two or more flat surfaces or curved surfaces. Each of the second recesses 33, 35 is a substantially multi-flat or curved portion of the wall of the cup body 6. Since they are formed on a substantially circular cross-sectional body, they form two recesses on both sides of the cup body 6. And they are located at the part of the cup body 6 closest to the side walls 18, 20 of the housing 1. Basically, the size of the second recesses 33, 35 is larger than the size of the first recesses 31, 32, and the maximum bending curvature in the second recesses 33, 35 is less than the maximum bending curvature in the first recesses 31, 32.

[0051] It should be noted that in the preferred embodiment shown, most clearly shown in Figure 4 , the diaphragm 11 is attached to the lower side of the inner edge of the surround 12; usually connected by adhesive.

[0052] In Figure 5 the alternative embodiment shown, the opening 16 in the side wall of the housing 1 extends to the top surface of the housing 1. Thus, the top surface of the opening 16 has an open end 16a. That is, compared with Figure 1Compared with the through-hole 16 on the housing 1, the opening 16 in this embodiment is an upward recessed opening on the housing 1. In some cases, a diaphragm positioning ring 40 can be installed between the top surface of the housing 1 (including the opening end 16a) and the diaphragm 11. Through Figure 5 the design of the opening 16 shown, the height space for the movement of the voice coil 2 is maximized, and the stroke lengths of the cup 6 and the diaphragm 11 are increased. Additionally, it should be noted that, as Figure 5 shown, the cup 6 in this embodiment further includes at least one opening 29 that faces the opening 16 of the housing 1 and is exposed from the opening 16. In one embodiment, a plurality of openings 29 are formed on the wall of the cup 6 and are evenly distributed along the wall.

[0053] Or, as Figure 6 shown, the opening 16 extends to the bottom end of the housing 1. Thus, the opening 16 has a lower opening end 16b on its bottom surface. That is to say, compared with Figure 1 the through-hole 16 being a perforation on the housing 1, the opening 16 in this embodiment is a downward recessed opening on the housing 1. This again maximizes the height space for movement, thereby increasing the stroke lengths of the cup 6 and the diaphragm 11. In addition, as Figure 6 shown, the cup 6 in this embodiment further includes at least one opening 29 that faces the opening 16 of the housing 1 and is exposed from the opening 16.

[0054] In Figure 7 a further variant embodiment shown, the housing 1 consists of an upper part and a lower part, namely the upper housing part C1 and the lower housing part C2. The upper housing part C1 includes an upper opening 161, and the bottom surface of the upper opening 161 has a lower opening end 16c, while the lower housing part C2 includes a lower opening 162, and the top surface of the lower opening 162 has an upper opening end 16d. When the upper housing part C1 and the lower housing part C2 are connected, a single opening 16 is formed. That is to say, the housing 1 has two different upper part C1 and lower part C2, the upper opening 161 is formed in the upper part C1 of the housing, and the lower opening 162 is formed in the lower part C2 of the housing, and they are aligned to form a single opening 16. These two upper and lower parts of the housing can be formed separately or be components of a single housing. Additionally, as Figure 7 shown, the cup 6 in this embodiment further includes at least one opening 29 that faces the opening 16 of the housing 1 and is exposed through the opening 16.

[0055] Obviously, in the above and other embodiments, the openings (or windows) 16 will be formed on opposite sides of the housing 1, especially on both sides of the long side (not the short side) of the housing 1. However, the number of openings (or windows) 16 can be more than two or less.

[0056] In another variant embodiment, as Figure 8 andFigure 9 As shown, the shape of the spider 5 is different from the traditional circular shape and has different configurations. For example, the length (e.g., the X direction in Figure 9 ) is greater than its width (e.g., the Y direction in Figure 9 ). The outermost and innermost corrugations of the spider 5 can be oval or racetrack-shaped, as shown in Figure 8 and Figure 9 .

[0057] The spider 5 has a shape with a generally racetrack shape or oval pattern, approaching a rectangular shape (see Figure 9 ). For example, the aspect ratio between its length and width can generally be between 1.3 and 2.2. This helps with installation into a speaker cabinet / enclosure with limited dimensions while maximizing the stability of the voice coil and the spider. In addition, the bottom opening of the bottom end 10 of the cup 6 also matches the shape of the outer edge 27 of the spider 5 (e.g., racetrack shape), so the cup 6 also correspondingly presents a configuration such as a racetrack or elliptical cone shape. Specifically, the shape and size of the opening at the bottom end 10 of the cup 6 generally match the shape and size of the outer edge 27 of the spider 5. This enables the bottom end 10 of the cup to be connected to the spider 5, as shown in Figure 4 . This design of the spider shape increases the overall stability of the voice coil 2. In addition, there are multiple openings 29 around the wall of the cup 6, and at least one opening 29 is exposed through the opening 16 of the cabinet 1. In one embodiment, the multiple openings 29 are evenly distributed around the wall of the cup 6.

[0058] In another variant embodiment, as shown in Figure 10 , the bottom surface of the cabinet 1 can be folded backward and joined to the spider 5 and the T-shaped yoke 46. Specifically, the bottom end C3 of the cabinet 1 can be bent or folded upward, and the folded end 111 is connected to the inner edge 26 of the spider 5 and the upper top end of the T-shaped yoke 46. Furthermore, the folded end 111 is located between the inner edge 26 and the T-shaped yoke 46. Different from other embodiments, in this embodiment, the bottom end of the cabinet 1 does not cover or surround the bottom C4 of the T-shaped yoke 46. Instead, the folded end 111 of the bottom end of the cabinet 1 is connected to the upper top end of the T-shaped yoke 46, so that the bottom C4 of the T-shaped yoke 46 is exposed from the bottom end C3 of the cabinet 1 and protrudes from the bottom end C3. There is a T-shaped yoke 46 in most speakers for conducting magnetism when powered on. Any feature in any of the embodiments or variations shown or described in the figures can of course be used in other embodiments.

[0059] It should be noted that in this specification, relative terms such as "upper", "bottom surface", "top surface", etc. refer to a configuration in which the diaphragm is generally located perpendicular to the top surface. In fact, the speaker can of course adopt any configuration, for example, depending on the external design, the use of the speaker, and personal choice.

[0060] It should be noted that the above-mentioned numerous embodiments are only examples for the convenience of description. The scope of rights of this application shall be subject to the appended claims, rather than being limited to the above-mentioned embodiments.

Claims

1. A loudspeaker, comprising a housing, a cup, a voice coil, and a spring, characterized in that: The outer edge of the elastic wave is set toward a bottom end of the cup body, and the inner edge of the elastic wave is connected to a U-shaped iron or a T-shaped yoke, and the cup body has a top directly facing the diaphragm, wherein the voice coil, the elastic wave and at least a portion of the cup body are all located within the casing, and the casing includes at least one opening located on the side wall, exposing the bottom end of the cup body.

2. A loudspeaker as claimed in claim 1, wherein at least a portion of the cup body forms a truncated cone having a tapered wall portion from a larger bottom end to a smaller top end.

3. The loudspeaker according to claim 1, characterized in that: A portion of the bottom end of the cup body is flush with the opening, or is located in the opening, or protrudes outward from the opening, so that the cup body can move longitudinally relative to the housing, and the bottom end moves within the longitudinal range of the opening.

4. The loudspeaker according to claim 3, characterized in that: At least two openings are arranged on opposite side walls of the housing.

5. The loudspeaker according to claim 1, characterized in that: The voice coil does not contact the diaphragm, and there is a gap between the top end of the voice coil and the diaphragm.

6. The loudspeaker according to claim 1, wherein: The opening extends to the top surface of the casing.

7. The loudspeaker according to claim 1, characterized in that: It further includes a diaphragm positioning ring, which is located between the diaphragm and the housing.

8. The loudspeaker according to claim 1, wherein: The opening extends to the bottom surface of the casing.

9. The loudspeaker according to claim 1, wherein: The housing has an upper part and a lower part. The at least one opening is a single opening. The upper opening of the upper part and the lower opening of the lower part are aligned to form the single opening.

10. The loudspeaker according to claim 1, characterized in that The top end of the cup body has a completely or partially flat surface.

11. The loudspeaker according to claim 10, characterized in that: The flat surface lies in a plane perpendicular to the extension axis of the cup body.

12. The loudspeaker according to claim 1, characterized in that Also included is one or more recesses on the surface of the cup body.

13. A loudspeaker as claimed in claim 12, characterized in that The top surface of the cup body is provided with one or more first recesses.

14. A loudspeaker as claimed in claim 13, characterized in that It also includes at least two first recesses that are axially opposite to each other, wherein two lead-out ends of the voice coil are respectively located between the first recess and the diaphragm to prevent the two lead-out ends from shifting.

15. The loudspeaker according to claim 1, characterized in that The side surface of the cup body has one or more second recesses.

16. A loudspeaker as claimed in claim 15, characterized in that It also includes two diametrically opposite second recesses, and the two second recesses are located at the portion of the cup body closest to the side wall of the housing.

17. The loudspeaker according to claim 15, characterized in that Each of the second recesses is a multi-plane portion or an arc-shaped portion of the wall of the cup body.

18. The loudspeaker according to claim 1, characterized in that The upper top of the cup body is provided with a through hole, so that the top of the voice coil extends into or passes through the through hole, and the voice coil and the cup body are connected at the edge of the through hole.

19. The loudspeaker according to claim 1, characterized in that The upper top end of the cup has a flat annular surface surrounding the perforation and is connected to the diaphragm.

20. The loudspeaker according to claim 18, characterized in that The cup body includes an extended inner edge extending downwardly, and the inner edge extends downwardly from the through hole of the top surface.

21. A loudspeaker as claimed in claim 20, characterized in that The downwardly extending inner edge is angled and projects inwardly toward the longitudinal axis of the cup body.

22. The loudspeaker according to claim 11, characterized in that The outer edge of the elastic wave is connected to the inner surface of the bottom end of the cup body.

23. A loudspeaker as claimed in claim 22, characterized in that The outer edge of the elastic wave includes an extension portion, and the extension portion surrounds and covers the bottom end of the cup body.

24. A loudspeaker as claimed in claim 1, characterized in that The voice coil is connected to the edge of the perforation of the cup body by using adhesive.

25. The loudspeaker according to claim 1, characterized in that It also includes at least one opening located on the wall of the cup body, the at least one opening faces the side wall of the housing and is exposed from the opening of the housing.

26. A loudspeaker as claimed in claim 25, characterized in that It also includes at least one opening evenly distributed on the wall of the cup body.

27. A loudspeaker as claimed in claim 6, characterized in that Also included is a diaphragm positioning ring located between the top surface and the diaphragm.

28. The loudspeaker of claim 25, wherein the spring wave is non-circular and has a length and a width, and the aspect ratio between the length and the width is between 1.3 and 2.

2.

29. The loudspeaker of any one of claims 1 to 28, wherein the spider has a racetrack-shaped or elliptical configuration.

30. The loudspeaker as claimed in claim 1, wherein the housing has a bottom end that is bent upward and connects the inner edge of the elastic wave and the folded end of the U-shaped iron or the T-shaped yoke.

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