Coaxial loudspeaker

Abstract

A coaxial loudspeaker comprises a tweeter assembly, a woofer assembly, and a frame. The tweeter assembly is used to produce high-frequency sound with a primary propagation direction along a first direction. The woofer assembly is used to produce bass sound with a primary propagation direction along the first direction. The woofer assembly includes a sound guide facing the tweeter assembly. The high-frequency sound produced by the tweeter assembly, which has a primary propagation direction along the first direction, is guided by the sound guide to propagate in a second direction. The tweeter and woofer assemblies are arranged coaxially, and the second direction of propagation differs from the first. The tweeter and woofer assemblies are mounted on the frame.

Description

Cross-reference to related registrations

[0001] This application claims priority over Chinese patent application No. 2024107885118, which was filed on June 18, 2024, pursuant to 35 USC §119(a), and the entire contents of which are hereby incorporated by reference. BACKGROUND 1. Technical field

[0002] The present disclosure relates to the technical field of loudspeakers and in particular to a coaxial loudspeaker. 2. Description of the state of the art

[0003] A coaxial loudspeaker is a loudspeaker in which a woofer and a tweeter are arranged along the same axis. The woofer and tweeter are responsible for producing low and high frequencies, respectively. Generally, the directions of movement of the woofer and tweeter diaphragms are the same, which means that the main direction of propagation of the sound radiated by both the woofer and tweeter is the same; that is, the sound is propagated primarily in a single direction. Prior art coaxial loudspeakers are therefore limited by the fact that the main direction of sound propagation is restricted to a single direction.

[0004] The information disclosed in this background section is intended solely to enhance understanding of the background of the described technology and may therefore contain information that does not constitute prior art already known to a person skilled in the art. Furthermore, the information disclosed in the background section does not imply that one or more problems to be solved by one or more embodiments of the disclosure have been identified by a person skilled in the art. SUMMARY

[0005] The purpose of this disclosure is to provide a coaxial loudspeaker capable of propagating sound in at least two principal directions. The coaxial loudspeaker comprises a tweeter assembly, a woofer assembly, and a frame. The tweeter assembly is used to produce high-frequency sound with a principal direction of propagation along a first direction. The woofer assembly is used to produce bass sound with a principal direction of propagation along the first direction. The woofer assembly includes a sound guide facing the tweeter assembly. The high-frequency sound produced by the tweeter assembly with the principal direction of propagation along the first direction is guided by the sound guide so that it propagates in a second direction. The tweeter assembly and the woofer assembly are arranged coaxially, and the second direction differs from the first.The high-frequency assembly and the low-frequency assembly are arranged on the frame.

[0006] Optionally, the sound-guiding element is a cone, and a cone angle of the sound-guiding element is directed towards the tweeter assembly, with a gap between the sound-guiding element and the tweeter assembly.

[0007] Optionally, the frame includes a first sound outlet, and the high-frequency sound propagates through the first sound outlet.

[0008] Optionally, the low-frequency assembly also includes a low-frequency diaphragm, wherein the sound-guiding part is part of the low-frequency diaphragm and the low-frequency diaphragm is connected to the frame.

[0009] Optionally, the sound guide is a cone, and a cone angle of the sound guide is directed towards the high-frequency assembly, with the sound guide and the low-frequency diaphragm being arranged coaxially.

[0010] Optionally, the low-frequency assembly also includes a low-frequency diaphragm carrier and a low-frequency voice coil, wherein the low-frequency diaphragm is connected to the low-frequency diaphragm carrier and the low-frequency voice coil is also connected to the low-frequency diaphragm carrier.

[0011] Optionally, the low-frequency diaphragm carrier includes a second sound outlet, and the high-frequency sound propagates through the second sound outlet.

[0012] Optionally, the low-frequency diaphragm and the low-frequency diaphragm carrier enclose a recording space, and the high-frequency assembly is located inside the recording space.

[0013] Optionally, the coaxial loudspeaker also includes a magnet guide, wherein the high-frequency assembly is arranged on the magnet guide and the magnet guide is arranged within the recording space.

[0014] Optionally, the low-frequency assembly further includes a magnet, and the frame includes a projecting section, wherein the magnet guide, the magnet and the projecting section are successively in contact with each other.

[0015] Optionally, the coaxial loudspeaker further comprises a first damper and a second damper, wherein the first damper is connected to the magnet guide, the first damper is also connected to the low-frequency diaphragm carrier, the second damper is connected to the low-frequency diaphragm carrier and the second damper is connected to the frame.

[0016] Optionally, the low-frequency membrane carrier also includes a stepped section, with the first damper and the second damper each connected to the stepped section.

[0017] Optionally, the stepped section is arranged in a central position on a side wall of the low-frequency membrane carrier.

[0018] Optionally, the low-frequency diaphragm carrier further comprises a cylindrical section, wherein the cylindrical section is arranged coaxially with the low-frequency voice coil.

[0019] By arranging the tweeter assembly, the woofer assembly, and the frame, the tweeter assembly is used to generate high-frequency sound with a primary propagation direction along the first direction, and the woofer assembly is used to generate bass sound with a primary propagation direction along the first direction. The woofer assembly includes the sound guide facing the tweeter assembly. The high-frequency sound generated by the tweeter assembly, with its primary propagation direction along the first direction, is guided by the sound guide to propagate in a second direction, with the tweeter and woofer assemblies arranged coaxially.

[0020] Since the low-frequency assembly can generate bass sound along the first direction, and the high-frequency sound generated by the high-frequency assembly can be guided by the sound guide so that it propagates in the second direction, which differs from the first direction, the coaxial loudspeaker can generate sound in at least two principal directions of propagation, thus avoiding the problem of sound propagating in a single direction as with conventional coaxial loudspeakers.

[0021] The above description is a general summary of the technical aspects of the present application. To provide a better understanding of the technical methods and to facilitate their implementation, the following will provide a detailed description of the application along with illustrations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings serve to improve understanding of the present application and are an integral part thereof. The illustrative embodiments and their explanations serve to clarify the present application and do not unduly restrict it. In the drawings: Fig. Figure 1 is an exploded view of an embodiment of the coaxial loudspeaker according to the invention (without the low-frequency diaphragm carrier); Fig. 2 is a half-section view of an embodiment of the coaxial loudspeaker according to the invention (without the low-frequency diaphragm carrier, frame and second damper); Fig. Figure 3 is a half-section view of an embodiment of the coaxial loudspeaker according to the invention; Fig. 4 is an enlarged view of the in Fig. 3 marked section A; Fig. Figure 5 is an exploded view of the first damper, low-frequency diaphragm carrier and second damper in an embodiment of the present invention; and Fig. Figure 6 is a perspective view of a low-frequency diaphragm, a low-frequency diaphragm support, a first damper and a high-frequency diaphragm in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EXECUTION FORMS

[0023] In the following detailed description of preferred embodiments, reference is made to the accompanying drawings, which form part thereof and illustrate specific embodiments in which the invention can be carried out. In this context, directional terminology such as "top," "bottom," "front," "back," etc., is used with reference to the orientation of the described figure(s). The components of the present invention can be positioned in a number of different orientations. The directional terminology is therefore used for illustrative purposes only and is in no way limiting. On the other hand, the drawings are only schematic, and the sizes of components may be exaggerated for clarity. It is understood that other embodiments can be used and structural modifications made without departing from the scope of the present invention.It is also understood that the phraseology and terminology used here serve a descriptive purpose and should not be considered restrictive. The use of "including," "comprehensive," or "with," and variations thereof, is intended to encompass the elements and equivalents listed below, as well as additional elements. Unless otherwise specified, the terms "connected," "coupled," and "assembled," and variations thereof, are used here in a broader sense and include direct and indirect connections, couplings, and assemblies. Similarly, the terms "facing," "approaching," and variations thereof are used here in a broader sense and include direct and indirect approach, and "adjacent to" and variations thereof are used here in a broader sense and include direct and indirect "adjacent to."Therefore, the description of component "A" facing component "B" can include situations where component "A" is directly facing component "B" or where one or more additional components are located between component "A" and component "B". Similarly, the description of component "A" adjacent to component "B" can include situations where component "A" is directly adjacent to component "B" or where one or more additional components are located between component "A" and component "B". Accordingly, the drawings and descriptions are considered illustrative and not restrictive.

[0024] As in Fig. Figure 1 shows an embodiment of the coaxial loudspeaker. The coaxial loudspeaker of the present invention comprises a tweeter assembly 1, a woofer assembly 2, and a frame 3. The tweeter assembly 1 is used to generate high-frequency sound with a primary propagation direction along the first direction. The woofer assembly 2 is used to generate bass sound with a primary propagation direction along the first direction. The woofer assembly 2 comprises a sound guide 200 facing the tweeter assembly 1. The high-frequency sound generated by the tweeter assembly 1, with its primary propagation direction along the first direction, is guided by the sound guide 200 so that it propagates in a second direction. The tweeter assembly 1 and the woofer assembly 2 are arranged coaxially, and the second direction differs from the first direction.Both the high-frequency assembly 1 and the low-frequency assembly 2 are arranged on the frame 3.

[0025] As in Fig. As shown in Figure 1, a rectangular coordinate system 0-XYZ is introduced within the coaxial loudspeaker for ease of explanation. The center axes of the tweeter assembly 1 and the woofer assembly 2 are aligned coaxially with the Z-axis. The X-axis or Y-axis is parallel to the radial direction of the sound guide 200. The sound guide 200 can have a curved surface, with its longitudinal section appearing curved when viewed from either the YoZ or XoZ plane. Alternatively, the sound guide 200 can have a conical surface, with its longitudinal section appearing as a straight line when viewed from either the YoZ or XoZ plane.The sound guide 200 can also have an inclined plane or other shapes, provided that its structure can deflect the high-frequency sound from the high-frequency assembly 1 in such a way that the direction of propagation differs from that of the bass sound produced by the low-frequency assembly 2.

[0026] As in Fig. As shown in Figure 1, the tweeter assembly 1, the woofer assembly 2, and the frame 3 can be arranged coaxially. The sound guide 200 can be made of a solid, sound-reflecting material. The materials of the sound guide 200 and the woofer diaphragm 20 can be the same. For example, both the sound guide 200 and the woofer diaphragm 20 can be made of materials such as paper, plastic, metal, or synthetic fiber.

[0027] As in Fig. As shown in Figure 1, the coaxial loudspeaker can produce sound that propagates in at least two principal directions. This is because the low-frequency assembly 2 can produce bass sound with a principal propagation direction along the first direction, and the high-frequency sound produced by the high-frequency assembly 1, also with a principal propagation direction along the first direction, can be guided by the sound guide 200 so that it propagates in a second direction that differs from the first. This avoids the problem of sound radiated by the coaxial loudspeaker propagating in only one principal direction. The principal propagation direction of the high-frequency sound radiated by the high-frequency assembly 1 and the principal propagation direction of the bass sound radiated by the low-frequency assembly can lie in the Z-axis direction; that is, the first direction can be the Z-axis direction. The second direction can form an angle with the first direction.For example, the second direction can form an angle with the Z-axis. That is, the high-frequency sound emitted by the tweeter assembly 1 can, after being reflected by the sound guide 200, propagate in a direction that forms an angle with the Z-axis.

[0028] As in Fig. As shown in 2, both the high-frequency module 1 (see Fig. 1 for the high-frequency module 1, also below) as well as the low-frequency module 2 (see Fig. 1 for the low-frequency module 2, also below) tones with a primary direction of propagation and a secondary direction of propagation. The volume is greatest in the primary direction of propagation, while the volume in the secondary direction of propagation is lower than in the primary direction. Fig. Figure 2 shows only the primary propagation direction of the high-frequency sound emitted by tweeter assembly 1 (represented by three smaller arc segments) and the primary propagation direction of the bass sound emitted by woofer assembly 2 (represented by one larger arc segment). The secondary propagation directions of the high-frequency sound emitted by tweeter assembly 1 and the bass sound emitted by woofer assembly 2 are not shown. The primary propagation direction of the high-frequency sound emitted by tweeter assembly 1 is the axial direction of tweeter assembly 1. The primary propagation direction of the bass sound emitted by woofer assembly 2 is the axial direction of woofer assembly 2. The primary propagation direction of the high-frequency sound generated by tweeter assembly 1 can be represented by the direction of the central axis of tweeter assembly 1 (e.g., the central axis of tweeter assembly 1 can be the Z-axis).The main propagation direction of the bass sound generated by the low-frequency assembly 2 can be represented by the direction of the central axis of the low-frequency assembly 2 (e.g., the central axis of the low-frequency assembly 2 can be the Z-axis).

[0029] As in Fig. As shown in 3, the tweeter assembly 1 (see Fig. The tweeter assembly 1 (see Figure 1 below) comprises a tweeter diaphragm 10, a tweeter voice coil 11, and a first magnet 12. The tweeter diaphragm 10 is rigidly connected to the tweeter voice coil 11. The central axis of the tweeter diaphragm 10, the central axis of the tweeter voice coil 11, and the central axis of the first magnet 12 are aligned coaxially with the Z-axis. The tweeter voice coil 11 is embedded in the gap formed by the first magnet 12 and the magnet guide 4. When the tweeter voice coil 11 is energized, the magnetic force generated by the first magnet 12 causes the tweeter diaphragm 10 to oscillate up and down along the Z-axis, thereby generating high-frequency sound. That is, the tweeter assembly 1 generates high-frequency sound that propagates primarily along the Z-axis.

[0030] As in Fig. As shown in 3, the low-frequency module 2 (see Fig. 1 for the low-frequency assembly 2 (also below) comprise a low-frequency diaphragm 20, a low-frequency diaphragm carrier 21, a low-frequency voice coil 22, and a second magnet 23. The low-frequency voice coil 22 is embedded in the gap formed by the second magnet 23 and the magnet guide 4. The central axis of the low-frequency diaphragm 20, the central axis of the low-frequency diaphragm carrier 21, the central axis of the low-frequency voice coil 22, and the central axis of the second magnet 23 are aligned coaxially with the Z-axis. The low-frequency diaphragm 20 is rigidly connected to the frame 3. The low-frequency diaphragm carrier 21 is rigidly connected to the low-frequency diaphragm 20. When the low-frequency voice coil 22 is energized, the magnetic force generated by the second magnet 23 drives the low-frequency diaphragm carrier 21 to move up and down along the Z-axis. When the low-frequency diaphragm carrier 21 moves up and down along the Z-axis, it causes the low-frequency diaphragm 20 to vibrate up and down, thereby generating bass sound.This means that the low-frequency assembly 2 generates bass sound that propagates mainly along the direction of the Z-axis.

[0031] As in Fig. Figure 3 shows the tweeter assembly 1 and the woofer assembly 2 (see Fig. 1 for the tweeter assembly 1 and the woofer assembly 2 (also shown below) are arranged coaxially. Therefore, the tweeter diaphragm 10, the tweeter voice coil 11, the first magnet 12, the magnet guide 4, the woofer diaphragm 20, the woofer diaphragm support 21, the woofer voice coil 22, and the second magnet 23 are arranged coaxially. The specific way in which the tweeter assembly 1 and the woofer assembly 2 are arranged on the frame 3 can be referenced in the following description of the embodiment.

[0032] As in Fig. As shown in 3, the low-frequency module 2 comprises (see Fig. 1 for the low-frequency assembly 2, also below) a sound-guiding element 200, which is part of the low-frequency assembly 2, making the sound-guiding element 200 more compact and easier to install. In particular, the sound-guiding element 200 can be part of the low-frequency diaphragm 20. For example, the sound-guiding element 200 can be formed integrally with the low-frequency diaphragm 20. Alternatively, the sound-guiding element 200 can be attached to the low-frequency diaphragm 20 by gluing, welding, or one-piece forming. Since the low-frequency diaphragm 20 can oscillate up and down along the Z-axis to produce bass sound, the sound-guiding element 200, which is part of the low-frequency diaphragm 20, can also be used by the high-frequency assembly 1 (see below). Fig. 1 for the high-frequency assembly 1 (also below) conducts the high-frequency sound generated. Therefore, there is no need for a separate sound-guiding structure for the high-frequency sound, making the sound-guiding part 200 more compact and easier to install (once the low-frequency diaphragm 20 is installed, the sound-guiding part 200 is also installed, eliminating the need for separate installation of the sound-guiding structure).

[0033] As in Fig. As shown in Figure 3, the sound-guiding element 200 is optionally a cone whose cone angle faces the tweeter assembly 1 (see Figure 3). Fig. 1 for the tweeter assembly 1, also below). The sound guide 200 can be positioned above the tweeter assembly 1. The sound guide 200 and the tweeter assembly 1 are spaced apart from each other, that is, they do not touch. The tweeter assembly comprises the tweeter diaphragm 10, which faces the cone angle of the sound guide 200, and the tweeter diaphragm 10 and the sound guide 200 are arranged coaxially. For example, the cone angle of the sound guide 200 can face the negative direction of the Z-axis, while the tweeter diaphragm 10 can protrude in the positive direction of the Z-axis. The tweeter diaphragm 10 and the sound guide 200 are coaxially aligned, and the conical shape of the sound guide 200 allows the high-frequency sound generated by the tweeter diaphragm 10 to be reflected more evenly after propagating in its main direction of propagation.

[0034] As in Fig. As shown in Figure 3, the cone angle of the sound-guiding element 200 can face the tweeter diaphragm 10, and the central axis of the sound-guiding element 200 can be aligned coaxially with the tweeter diaphragm 10. In this way, the sound generated by the tweeter diaphragm 10 propagates in the main direction of propagation and is then guided by the sound-guiding element 200 (for example, the sound generated by the tweeter diaphragm 10 in the main direction of propagation can be reflected by the sound-guiding element 200). The sound can then propagate within the conical space, with the inner surface of the sound-guiding element 200 serving as the apex of the cone.

[0035] As in Fig. As shown in 3, the low-frequency module 2 comprises (see Fig. 1 for the low-frequency assembly 2, also below) optionally also the low-frequency diaphragm 20, wherein the sound-guiding element 200 is part of the low-frequency diaphragm 20 and the low-frequency diaphragm 20 is connected to the frame 3. The low-frequency diaphragm 20 can be attached to the frame 3. For example, the outer edge of the low-frequency diaphragm 20 can be attached to the upper end of the frame 3 by welding or gluing. The sound-guiding element 200 is a cone, and the cone angle of the sound-guiding element 200 faces the high-frequency assembly 1 (see Fig. 1 for the high-frequency assembly 1), and the sound-guiding element 200 is aligned coaxially with the low-frequency diaphragm 20. For example, the central part of the low-frequency diaphragm 20 can be recessed downwards (e.g. in the direction of the negative direction of the Z-axis) to form a conical sound-guiding element 200, which can be a cone formed from a diaphragm.

[0036] As in Fig. As shown in 3, the low-frequency module 2 comprises (see Fig. 1 for the low-frequency assembly 2 (also below) optionally a low-frequency diaphragm carrier 21 and a low-frequency voice coil 22. The low-frequency diaphragm 20 is connected to the low-frequency diaphragm carrier 21, and the low-frequency voice coil 22 is connected to the low-frequency diaphragm carrier 21. The low-frequency diaphragm carrier 21 generally has the shape of a shell and is open at both ends. The upper part of the low-frequency diaphragm carrier 21 covers the low-frequency diaphragm 20. The upper part of the low-frequency diaphragm carrier 21 is attached to the low-frequency diaphragm 20, either by welding or bonding. The low-frequency diaphragm carrier 21 is located between the magnet guide 4 and the frame 3. The lower part of the low-frequency diaphragm carrier 21 is attached to the low-frequency voice coil 22, either by welding or bonding. The low-frequency diaphragm carrier 21 can be made of plastic, metallic materials (e.g., aluminum alloy or magnesium-aluminum alloy), or synthetic fibers.

[0037] As in Fig. As shown in Figure 3, the low-frequency diaphragm 20 and the low-frequency diaphragm carrier 21 optionally form an enclosed recording space, and the high-frequency assembly 1 (see Figure 3) Fig. The tweeter assembly 1 (also shown below) is positioned within the recording space. For example, after the upper end of the woofer diaphragm support 21 is attached to the lower surface of the woofer diaphragm 20, a cylindrical recording space can be formed. The tweeter assembly 1 can be positioned centrally and slightly above this space by attaching it to the magnet guide 4. Placing the tweeter assembly 1 within the enclosed space reduces the installation space compared to an externally exposed tweeter assembly 1.

[0038] As in Fig. As shown in Figure 3, the coaxial loudspeaker optionally also includes a magnet guide 4, wherein the high-frequency assembly 1 (see Figure 3) Fig. The magnet guide 4 is located within the recording chamber. The first magnet 12 of the tweeter assembly 1 can be placed in a cylindrical groove at the upper end of the magnet guide 4. The magnet guide 4 can be positioned centrally and slightly below the upper level of the recording chamber by attaching it to the magnet 23a and the projecting section 30. The magnet guide 4 can be a common U-shaped structure (like a U-yoke), meaning that the magnet guide 4 can conduct magnetism for both the first magnet 12 and the second magnet 23. The magnet guide 4 can be made of ferromagnetic steel. Positioning the magnet guide 4 within the recording chamber reduces the installation space compared to an exposed magnet guide 4.

[0039] As in Fig. As shown in 3, the low-frequency module 2 comprises (see Fig. 1 for the low-frequency assembly 2 (also below) optionally further a magnet 23a, and the frame 3 includes a projecting section 30. The magnet guide 4, the magnet 23a, and the projecting section 30 are in sequential contact with each other. The magnet 23a can be the second magnet 23, and its shape can be cylindrical. The magnet 23a can be embedded in a cylindrical groove located in the lower center of the magnet guide 4. The upper end of the magnet 23a can be attached to the magnet guide 4, while the lower end can be attached to the projecting section 30. For example, after the magnet guide 4, the magnet 23a, and the projecting section 30 are in sequential contact, adhesive can be applied to their contact surfaces for fixation. The projecting section 30 can be located in the center of the bottom of the frame 3.The foregoing section 30 can take the form of a cone, a cylinder, or a rectangular body. The foregoing section 30 can also take other forms, as long as it can pass through the lower hole of the low-frequency diaphragm support 21 and support the magnet 23a. The magnet guide 4, the magnet 23a, and the foregoing section 30 are arranged coaxially. By positioning the foregoing section 30 at the base of the frame 3, the magnet 23a and the magnet guide 4 can be lifted from the base of the frame 3, thereby providing adequate space for movement of the low-frequency voice coil 22.

[0040] As in Fig. As shown in Figure 3, the coaxial loudspeaker optionally includes a first damper 5 and a second damper 6. The first damper 5 connects the magnet guide 4 and the woofer diaphragm carrier 21, while the second damper 6 connects the woofer diaphragm carrier 21 and the frame 3. Both the first damper 5 and the second damper 6 can be ring-shaped with an arcuate cross-section. The inner edge of the first damper 5 can be attached to the outer edge at the top of the magnet guide 4, while the outer edge of the first damper 5 can be attached to the inner edge of the woofer diaphragm carrier 21. The first damper 5 can be curved upwards (e.g., in the positive direction of the Z-axis) and positioned inside the woofer diaphragm carrier 21. The first damper 5 can be attached to the magnet guide 4 and the woofer diaphragm carrier 21 by gluing or welding.

[0041] As in Fig. As shown in Figure 3, the inner edge of the second damper 6 can be attached to the outer wall of the low-frequency diaphragm support 21, while the outer edge of the second damper 6 can be attached to the inner wall of the frame 3. The second damper 6 can be bent downwards (e.g., in the negative direction of the Z-axis) and positioned outside the low-frequency diaphragm support 21. The second damper 6 can be attached to the low-frequency diaphragm support 21 and the frame 3 by gluing or welding. The first damper 5, the second damper 6, and the low-frequency diaphragm support 21 work together to maintain the vertical alignment of the low-frequency voice coil 22 and prevent it from tilting.

[0042] Referring to Fig. 4 and Fig. 5, the low-frequency diaphragm carrier 21 optionally also includes a stepped section 210, wherein the first damper 5 and the second damper 6 are each connected to the stepped section 210. The stepped section 210 can be a flat circular ring, wherein the inner diameter of the low-frequency diaphragm carrier 21 above the stepped section 210 is larger than the inner diameter of the low-frequency diaphragm carrier 21 below the stepped section 210. The upper and lower surfaces of the stepped section 210 can be flat. The annular stepped section 210 can be aligned coaxially with the low-frequency diaphragm 20. The outer edge of the first damper 5 can be attached to the upper surface of the stepped section 210, while the inner edge of the second damper 6 can be attached to the lower surface of the stepped section 210. The first damper 5 and the second damper 6 can be attached to the stepped section 210 by gluing or welding.

[0043] Referring to Fig. 4 and Fig. 5. The design of the stepped section 210 increases the contact area between the first damper 5, the second damper 6, and the low-frequency diaphragm carrier 21, thereby increasing the stability of the attachment of the first damper 5 and the second damper 6 to the low-frequency diaphragm carrier 21. Since both the first damper 5 and the second damper 6 are attached to the stepped section 210, they lie approximately in the same plane at the attachment point on the low-frequency diaphragm carrier 21. Therefore, the first damper 5 and the second damper 6 will not cause any bending movement on the low-frequency diaphragm carrier 21 due to vertical misalignment, thus preventing the low-frequency diaphragm carrier 21 from tilting due to bending movement. This helps the first damper 5, the second damper 6, and the low-frequency diaphragm carrier 21 to keep the low-frequency voice coil 22 vertically aligned without tilting, ensuring more stable operation.The stepped section 210 is positioned in the middle of the side wall of the low-frequency membrane carrier 21.

[0044] As in Fig. As shown in Figure 6, the low-frequency membrane carrier 21 optionally also includes a second sound outlet 211, and the frame 3 includes a first sound outlet 31 (see Figure 6). Fig. 3 for frame 3 and first sound outlet 31, also below). The high-frequency sound propagates through the second sound outlet 211 and / or the first sound outlet 31. The second sound outlet 211 can be located on the side wall of the low-frequency diaphragm carrier 21 above the stepped section 210 (see Fig. 5 for the stepped section 210). The shape of the second sound outlet 211 can be a rectangular slot. There can be several second sound outlets 211, and they can be evenly distributed along the side wall of the low-frequency diaphragm carrier 21 with respect to the Z-axis.

[0045] As in Fig. As shown in Figure 1, the first sound outlet 31 can be located on the frame 3 above the stepped section 210 (see Figure 1). Fig. 5 for the stepped section 210). The first sound outlet 31 can be circular. There can be several first sound outlets 31, and they can be evenly distributed along the side wall of the frame 3 with respect to the Z-axis. The second sound outlet 211 (see Fig. The number of openings for the second sound outlet 211 (see also below) is larger than the number for the first sound outlet 31. The second sound outlet 211 and the first sound outlet 31 connect the recording chamber to the outside space. The number of second sound outlets 211 is less than the number of first sound outlets 31. The high-frequency sound generated by the tweeter assembly 1 and the high-frequency sound reflected and deflected by the sound guide 200 can propagate outwards (e.g., in the direction of the X-axis or Y-axis) through the second sound outlet 211 and the first sound outlet 31.

[0046] As in Fig. As shown in Figure 6, the low-frequency diaphragm carrier 21 optionally further comprises a cylindrical section 212 which is aligned coaxially with the low-frequency voice coil 22 (see Figure 6). Fig. 3 for the low-frequency voice coil 22, also below). The cylindrical section 212 can be tubular. The upper end of the cylindrical section 212 can be attached to the inside of the stepped section 210 (see Fig. 4 for the stepped section 210, also below). For example, the cylindrical section 212 and the stepped section 210 can be formed as a single piece. Since the low-frequency voice coil 22 moves mainly in the axial direction along the Z-axis, the coaxial arrangement of the cylindrical section 212 and the low-frequency voice coil 22 ensures that the force of the low-frequency voice coil 22 is transmitted along the Z-axis to the low-frequency diaphragm 20, thus preventing force from being wasted in a radial direction (e.g., along the X-axis or Y-axis) and thereby increasing the efficiency of the power transmission of the low-frequency voice coil 22.

[0047] The foregoing description of preferred embodiments of the invention has been presented for illustrative and descriptive purposes. It is not intended to be exhaustive or to limit the invention to one exact form or to the disclosed exemplary embodiments. Accordingly, the foregoing description should be regarded as illustrative rather than limiting. Obviously, many modifications and variations are apparent to those skilled in the art. The embodiments have been selected and described to best explain the principles of the invention and its best practical application, and thereby enable those skilled in the art to understand the invention in various embodiments and with various modifications as are suitable for the respective use or implementation.It is intended that the scope of the invention be defined by the appended claims and their equivalents, in which all terms are meant in their broadest meaningful sense unless otherwise specified. Therefore, the term "the invention," "the present invention," or the like does not necessarily limit the scope of the claims to a particular embodiment, and reference to particularly preferred exemplary embodiments of the invention does not imply any limitation of the invention, nor can any such limitation be inferred. The invention is limited only by the spirit and scope of the appended claims. Furthermore, these claims may refer to the use of "first," "second," etc., before a noun or element.Such terms are to be understood as nomenclature and should not be construed as limiting the number of elements modified by that nomenclature unless a specific number has been indicated. The abstract of disclosure is provided to comply with the requirements that prescribe an abstract enabling a seeker to quickly ascertain the subject matter of the technical disclosure of a patent granted on the basis of that disclosure. It is provided on the condition that it is not to be used for the interpretation or limitation of the scope or meaning of the claims. The advantages and benefits described may not apply to all embodiments of the invention.It should be noted that, in the described embodiments, modifications can be made by a person skilled in the art without deviating from the scope of the present invention as defined by the following claims. Furthermore, no element or component in the present disclosure is intended to be made available to the public, regardless of whether the element or component is expressly mentioned in the following claims.

Claims

[1] Coaxial loudspeaker, comprising: a high-frequency assembly for generating high-frequency sound with a main propagation direction along a first direction; a low-frequency assembly for generating bass sound with a main propagation direction along the first direction, wherein the low-frequency assembly comprises a sound guide directed towards the high-frequency assembly, wherein the high-frequency sound generated by the high-frequency assembly is guided with the main propagation direction along the first direction by the sound guide such that it propagates in a second direction, wherein the high-frequency assembly and the low-frequency assembly are arranged coaxially and the second direction differs from the first direction; and a frame, wherein the high-frequency assembly and the low-frequency assembly are arranged on the frame. [2] Coaxial loudspeaker according to claim 1, wherein the sound-guiding part is a cone and a cone angle of the sound-guiding part is directed towards the high-frequency assembly, wherein there is a gap between the sound-guiding part and the high-frequency assembly. [3] Coaxial loudspeaker according to claim 1 or claim 2, wherein the frame comprises a first sound outlet and the high-frequency sound propagates through the first sound outlet. [4] Coaxial loudspeaker according to one of claims 1 to 3, wherein the low-frequency assembly further comprises a low-frequency diaphragm, the sound-guiding part is a part of the low-frequency diaphragm and the low-frequency diaphragm is connected to the frame. [5] Coaxial loudspeaker according to claim 4, wherein the sound guide is a cone and a cone angle of the sound guide is directed towards the high-frequency assembly, wherein the sound guide and the low-frequency diaphragm are arranged coaxially. [6] Coaxial loudspeaker according to claim 4 or claim 5, wherein the low-frequency assembly further comprises: a low-frequency diaphragm carrier; and a low-frequency voice coil connected to the low-frequency magnet carrier, where the low-frequency diaphragm is connected to the low-frequency diaphragm carrier. [7] Coaxial loudspeaker according to claim 6, wherein the low-frequency diaphragm carrier comprises a second sound outlet and the high-frequency sound propagates through the second sound outlet. [8] Coaxial loudspeaker according to claim 6 or 7, wherein the low-frequency diaphragm and the low-frequency diaphragm carrier enclose a receiving space and the high-frequency assembly is located within the receiving space. [9] Coaxial loudspeaker according to claim 8, further comprising a magnet guide, wherein the high-frequency assembly is arranged on the magnet guide and the magnet guide is located within the recording space. [10] Coaxial loudspeaker according to claim 9, wherein the low-frequency assembly further comprises a magnet, the framework further includes a preceding section, and wherein the magnetic guide, the magnet and the protruding section come into contact with each other successively. [11] Coaxial loudspeaker according to claim 9 or 10, wherein a first magnet of the high-frequency assembly is arranged in a cylindrical groove at the upper end of the magnet guide, wherein the magnet guide is positioned in a receiving space by being attached to the magnet and the protruding section, where the magnet guide is a common U-shaped magnet, and the magnetic guide conducts magnetism for both the first magnet and the second magnet. [12] Coaxial loudspeaker according to any one of claims 9 to 11, further comprising: a first damper connected to the magnet guide and the low-frequency diaphragm carrier; and a second damper that is connected to the low-frequency diaphragm carrier and the frame. [13] Coaxial loudspeaker according to one of claims 6 to 12, wherein the low-frequency diaphragm carrier further comprises a stepped section, wherein the first damper and the second damper are each connected to the stepped section. [14] Coaxial loudspeaker according to claim 13, wherein the stepped section is located at a central position of a side wall of the low-frequency diaphragm carrier. [15] Coaxial loudspeaker according to any one of claims 6 to 14, wherein the low-frequency diaphragm carrier further comprises a cylindrical section which is arranged coaxially with the low-frequency voice coil.

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