Speaker cabinet structure with an inclined, arc-shaped reflective chamber

Abstract

This invention relates to a speaker enclosure structure with an inclined arc-shaped reflective chamber, comprising an enclosure, a loudspeaker, and a housing. The loudspeaker is mounted on the front side of the enclosure, and the front side of the loudspeaker forms a reference plane located on a coordinate plane formed by the horizontal axis (X-axis) and the vertical axis (Y-axis). The housing is mounted on the rear side of the enclosure, and its front side is recessed to form an arc-shaped reflective chamber. The arc-shaped reflective chamber has a three-dimensional arc configuration and is at least partially located in the direction of sound wave propagation of the loudspeaker within the enclosure, for reflecting the sound waves generated by the loudspeaker. The arc-shaped reflective chamber can be tilted along the horizontal axis (X-axis) and / or the vertical axis (Y-axis) respectively, so that a lateral angle and / or a longitudinal angle are formed between the arc-shaped reflective chamber and the reference plane. Thus, through the asymmetrical internal structure, the generation of standing waves can be suppressed, thereby improving the acoustic performance of the speaker enclosure structure.

Description

Technical Field

[0001] This invention relates to speaker structure, and more particularly to a reflective chamber with a three-dimensional arc shape, wherein the reflective chamber is placed at an angle relative to a reference plane to form a lateral angle and / or a longitudinal angle. Prior Technology

[0002] In speaker design, optimizing acoustic performance has always been a key focus and research direction in the industry, especially achieving high-quality sound within limited space. Factors such as the internal structural design, spatial configuration, and material selection all affect sound fidelity, clarity, and low-frequency response, thus influencing the overall sound quality. Therefore, as users' demands for sound quality increase, speaker designers need to overcome multiple technical challenges to achieve high-fidelity sound.

[0003] Furthermore, the geometry and spatial layout of the speaker's internal structure affect the propagation path of sound waves. In symmetrical or regularly shaped spaces, sound waves tend to reflect along fixed paths. This can easily lead to the superposition or cancellation of sound waves, resulting in increased or decreased sound pressure levels at specific frequencies—a phenomenon known as standing waves. This not only makes the sound too intense in certain frequency ranges, causing sound quality distortion, but can also lead to an uneven sound field. Especially in low-frequency response, sound waves are more easily affected by the spatial shape, forming a specific sound pressure distribution and affecting the clarity and fullness of bass frequencies.

[0004] Furthermore, symmetrical internal structures are widely used because they are simpler to manufacture. However, as mentioned earlier, when the internal structure of a speaker is too symmetrical, it increases the number of times sound waves reflect along the same path and increases the probability of standing waves, thus affecting the layering and realism of the sound. In particular, standing waves can also interfere with the movement of the speaker diaphragm and affect the sound reproduction accuracy, making it impossible to faithfully reproduce the details of the original sound source.

[0005] In summary, speaker design involves many technical challenges. Therefore, how to reduce the probability of standing wave generation while reducing design and production difficulties, so as to improve the acoustic performance of the speaker and make the sound clearer and more realistic, has become an important issue of this invention. Summary of the Invention

[0006] In order to stand out in a highly competitive market, the inventors, with a spirit of continuous improvement, have finally developed a speaker structure with an inclined arc-shaped reflective chamber after a long period of research and experimentation. This structure effectively controls standing waves and reduces their impact on sound quality, and the inventors hope to gain market favor through the advent of this invention.

[0007] One objective of this invention is to provide a speaker enclosure structure with an inclined arc-shaped reflective chamber, comprising an enclosure, a loudspeaker, and a housing. The loudspeaker is mounted on the front side of the enclosure, and the front side of the loudspeaker forms a reference plane located on a coordinate plane formed by the horizontal axis (X-axis) and the vertical axis (Y-axis). The housing is mounted on the rear side of the enclosure, and its front side is recessed to form an arc-shaped reflective chamber. The arc-shaped reflective chamber has a three-dimensional arc configuration and is at least partially located in the direction of sound wave propagation of the loudspeaker within the enclosure, for reflecting the sound waves generated by the loudspeaker. The arc-shaped reflective chamber can be tilted along the horizontal axis (X-axis) and / or the vertical axis (Y-axis) respectively, so that a horizontal angle and / or a vertical angle are formed between the arc-shaped reflective chamber and the reference plane. Thus, through the asymmetrical internal structure, the generation of standing waves can be suppressed, thereby improving the acoustic performance of the speaker enclosure structure.

[0008] Optionally, the lateral angle is greater than 0 degrees and less than 90 degrees, and the longitudinal angle is equal to 0 degrees.

[0009] Optionally, the longitudinal angle is greater than 0 degrees and less than 90 degrees, and the transverse angle is equal to 0 degrees.

[0010] Optionally, the lateral angle is greater than 0 degrees and less than 90 degrees, and the longitudinal angle is greater than 0 degrees and less than 90 degrees.

[0011] Optionally, the arc-shaped reflective chamber has an arc shape in cross-section, and its arc angle range is less than 180 degrees.

[0012] Optionally, the outer contour of the housing is the same as the shape of the arc-shaped reflective chamber.

[0013] Optionally, the speaker structure also includes at least one bass reflex port, wherein the two ends of the bass reflex port have connected openings, and the bass reflex port is located at least near the higher position of the arc-shaped reflective chamber in its inclined orientation.

[0014] Optionally, the phase inverter is recessed and extends inward from the front side of the housing.

[0015] To enable the esteemed review committee to gain a further understanding of the purpose, technical features, and effects of this invention, the following detailed description is provided, along with accompanying drawings: Simple Explanation of the Diagram

[0016] [Figure 1] is a front perspective view of the speaker structure of the present invention; [Figure 2] is a rear perspective view of the speaker structure of the present invention; [Figure 3] is a right-side view of the speaker structure of the present invention; [Figure 4] is a top view of the speaker structure of the present invention; [Figure 5] is a schematic diagram of the longitudinal angle between the arc-shaped reflective cavity and the reference plane of the present invention; [Figure 6] is a schematic diagram showing the lateral angle between the arc-shaped reflective cavity and the reference plane of the present invention; and [Figure 7] is a schematic diagram showing the positions of the housing and the bass reflex port in the speaker structure of the present invention. Implementation

[0017] To make the objectives, technical content, and advantages of this invention clearer, the following description, in conjunction with specific embodiments and accompanying drawings, provides further insight. Those skilled in the art will understand the advantages and effects of this invention, and the invention can be applied through other different specific embodiments. Details in this specification can be modified and changed without departing from the concept of this invention. Furthermore, the accompanying drawings are for simple illustration only and are not depictions of actual dimensions. Moreover, unless explicitly indicated or defined in the context, the terms "a" and "the" in this invention include the plural.

[0018] It should be understood that the terms used herein generally have their common meaning in the art, and in case of conflict, any definition given herein shall prevail. Since the same thing can be expressed in multiple ways, the use of alternatives or synonyms does not exclude other synonyms, and the use of terms is illustrative only and does not limit the scope or meaning of the invention or any term. The terms first, second, or third, etc., may be used herein to describe various elements. These terms are used to distinguish one element from another and should not impose any substantial limitations on any element, nor should they limit the assembly or arrangement order of the elements in practical applications. Furthermore, directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the scope of protection of the invention.

[0019] Furthermore, the term "and / or" as used herein may include, as appropriate, any combination of one or more of the associated listed items. Additionally, terms such as "substantially" or "approximately" as used in the specification may refer to the average of a numerical or complex range of deviations from a particular value that can be recognized or determined by a person skilled in the art, including taking into account certain specific errors that may arise when measuring that particular value due to limitations of the measurement system or equipment. For example, a numerical value referred to as "substantially" may include ±5%, ±3%, ±1%, ±0.5%, ±0.1%, and one or more standard deviations of that particular value.

[0020] This invention relates to a speaker enclosure structure with an inclined, arc-shaped reflective chamber, as shown in Figures 1 to 4. In one embodiment, the speaker enclosure structure 1 includes a cabinet 11, a speaker 13, and a housing 15. For ease of explanation of the component features and relative positional relationships, the spatial form of the components is defined in the following description based on three mutually orthogonal axes: the horizontal axis (X-axis), the vertical axis (Y-axis), and the depth axis (Z-axis). Since this invention relates to the placement of the housing 15, a reference plane R is formed on the front side of the speaker 13 as a reference for adjusting the position of the housing 15 relative to the speaker 13. This reference plane R is an imaginary plane extending from the outer edge of the speaker 13, and not a recessed area on the front side of the speaker 13.

[0021] Continuing from the above, please refer again to Figures 1 to 4. The reference plane R is located on the coordinate plane formed by the horizontal axis (X-axis) and the vertical axis (Y-axis). Specifically, the horizontal axis (X-axis) refers to the left-right extension direction, where the upper left of Figure 1 is the left side direction of the element, and the lower right of Figure 1 is the right side direction of the element; the vertical axis (Y-axis) refers to the up-down extension direction, where the upper part of Figure 1 is the upper (top) side direction of the element, and the lower part of Figure 1 is the lower (bottom) side direction of the element; the depth axis (Z-axis) refers to the front-back extension direction, where the lower left of Figure 1 is the front side direction of the element, and the upper right of Figure 1 is the rear side direction of the element.

[0022] Furthermore, referring again to Figures 1 to 4, the speaker 13 can be mounted on the front side of the enclosure 11, and the housing 15 can be mounted on the rear side of the enclosure 11. The enclosure 11 also provides space for various components such as electronic parts, circuit boards, and wiring necessary for the speaker structure 1 to operate normally. In this embodiment, the enclosure 11 is composed of at least a front cover 11A and a hollow enclosure 11B. The speaker 13 can be mounted on the front cover 11A, and the housing 15 can be mounted on the hollow enclosure 11B, but this is not a limitation. In other embodiments of the present invention, depending on actual needs, the enclosure 11 can be a single component; or, the enclosure 11 can be composed of multiple components; or, the enclosure 11 can be integrally formed with the housing 15, but the housing 15 will still have the structural features described later; in addition, the shape and appearance of the enclosure 11 can be adjusted according to product requirements, and is not limited to the form shown in FIG1, so as to improve the flexibility of the speaker structure 1 in product design and meet the preferences of consumers of different age groups.

[0023] Referring again to Figures 1 to 4, the front side of the speaker 13 can be exposed outside the enclosure 11. When the speaker 13 is driven, its single diaphragm vibrates, and the generated sound waves propagate to the outside and inside of the enclosure 11. Among them, the sound waves generated by the speaker 13 into the enclosure 11 can propagate to the housing 15. Furthermore, depending on the product requirements, the speaker 13 may be of various types, including but not limited to subwoofers, midrange speakers, tweeters, horn speakers, or full-range speakers. Any speaker that can emit sound waves and can be used with the subsequent housing 15 is considered a speaker 13 in this invention.

[0024] Furthermore, referring again to Figures 1 to 4, the front side of the housing 15 is recessed inward to form an arc-shaped reflective chamber 150, and the arc-shaped reflective chamber 150 has a three-dimensional arc configuration. In this embodiment, the outer contour of the housing 15 also has a three-dimensional arc configuration, and the arc angle of the outer contour of the housing 15 and the arc-shaped reflective chamber 150 are substantially the same, but this is not a limitation. Depending on product requirements, in some embodiments, the outer contour of the housing 15 may differ from the shape of the arc-shaped reflective chamber 150. In addition, the arc-shaped reflective chamber 150 has an arc shape in cross-section, and its arc angle range is less than 180 degrees. In other words, the cross-sectional shape of the arc-shaped reflective chamber 150 is smaller than the complete semicircle extending from the center, but this is not a limitation. Furthermore, at least a portion of the arc-shaped reflective chamber 150 is located in the direction of sound wave propagation within the enclosure 11 of the loudspeaker 13. Thus, the sound waves generated by the loudspeaker 13 inside the enclosure 11 can be reflected back and forth within the arc-shaped reflective chamber 150; in other words, the arc-shaped reflective chamber 150 constitutes a sound wave reflection area. It is worth noting that when the housing 15 and the enclosure 11 are integrally formed, the portion containing the arc-shaped reflective chamber 150 is designated as the housing 15, and the remaining portion is designated as the enclosure 11.

[0025] To facilitate the explanation of the relationship between the arc-shaped reflective chamber 150 and the reference plane R, Figures 5 and 6 only show the arc-shaped reflective chamber 150 and the reference plane R. It should be noted that the reference plane R can be moved in the figures as needed to keep it close to the arc-shaped reflective chamber 150 for easy marking of the included angle. Such positional changes are limited to the marking requirements of the drawings in the instruction manual and do not affect the definition of the reference plane R. Furthermore, in Figures 3 and 5, viewed from the right-hand perspective, the arc-shaped reflective chamber 150 can rotate around the horizontal axis (X-axis) and tilt along the vertical axis (Y-axis), forming a longitudinal angle θY between the arc-shaped reflective chamber 150 and the reference plane R. The horizontal axis (X-axis) serves as the boundary; the arc-shaped reflective chamber 150 can tilt upwards or downwards. The opening of the arc-shaped reflective chamber 150 is used as the reference plane to define its angular relationship with the reference plane R (i.e., the longitudinal angle θY). In Figures 4 and 6, viewed from a top-down perspective, the arc-shaped reflective chamber 150 can rotate around the longitudinal axis (Y-axis) and tilt along the transverse axis (X-axis), forming a transverse angle θX between the arc-shaped reflective chamber 150 and the reference plane R. The arc-shaped reflective chamber 150 can tilt to the left or right, with the longitudinal axis (Y-axis) as the boundary. The opening of the arc-shaped reflective chamber 150 is used as the reference plane to define the angular relationship between it and the reference plane R (i.e., the transverse angle θX).

[0026] Referring again to Figures 5 and 6, depending on actual needs, in some embodiments, the arc-shaped reflective chamber 150 is tilted only along the longitudinal axis (Y-axis), and the longitudinal angle θY formed by tilting upwards or downwards is greater than 0 degrees and less than 90 degrees, while the lateral angle θX is 0 degrees (i.e., there is no lateral angle θX). In some embodiments, the arc-shaped reflective chamber 150 is tilted only along the transverse axis (X-axis), and the lateral angle θX formed by tilting left or right is greater than 0 degrees and less than 90 degrees, while the longitudinal angle θY is 0 degrees (i.e., there is no longitudinal angle θY). In some embodiments, the arc-shaped reflective chamber 150 can be tilted simultaneously along both the transverse axis (X-axis) and the longitudinal axis (Y-axis), such that both the lateral angle θX and the longitudinal angle θY are greater than 0 degrees and less than 90 degrees. Therefore, it can be seen that the circular arc reflection chamber 150 and the reference plane R can form only a lateral angle θX or a longitudinal angle θY, or have both a lateral angle θX and a longitudinal angle θY.

[0027] Furthermore, the volume of the speaker enclosure significantly affects sound quality. Generally, a larger speaker enclosure volume results in better low-frequency response, and a larger space allows for richer propagation and reflection paths for sound waves, thereby enhancing the dynamics and ambiance of the timbre. Since the arc-shaped reflective chamber 150 of this invention forms a lateral angle θX and / or a longitudinal angle θY with the reference plane R, in other words, the housing 15 or the arc-shaped reflective chamber 150 will exhibit an inclined state with one side higher and the other lower relative to the reference plane R. Based on the aforementioned features, please refer to Figures 1 and 7, the speaker enclosure structure 1 also includes at least one bass reflex port 111. In this embodiment, the bass reflex port 111 is located on the front side of the enclosure 11 and extends inward, with interconnected openings at both ends, thus forming an internal duct space 1110. However, this is not a limitation; in other embodiments, the bass reflex port 111 may also be located on the rear side of the enclosure 11 and extend inward. Furthermore, the position of the bass reflex tube 111 corresponds to or is at least close to the side of the housing 15 away from the reference plane R, that is, it is in a higher position of the inclined state of the housing 15 (or the arc-shaped reflection chamber 150). The aforementioned design can extend the path of the reflected sound wave from the opening of the bass reflex tube 111 and reduce the intensity (amplitude) of the harmful reflected sound wave, thereby making the low-frequency performance of the speaker structure 1 fuller.

[0028] In summary, referring again to Figures 1 to 7, the speaker structure 1 can have the following effects: (1) Since the arc-shaped reflective chamber 150 in the housing 15 is arc-shaped, the reflective surface it forms is also an arc-shaped surface. This design can increase the probability that the incident angle of the reflected sound wave is not zero, reduce the situation where the reflected sound wave returns directly to the single diaphragm, reduce the interference of the single diaphragm with the reflected sound wave, and thus improve the fidelity of the loudspeaker. (2) Since the arc surface is a symmetrical geometric structure, it easily leads to regular reflection of sound waves, increasing the possibility of standing waves. To solve this problem, the present invention breaks the symmetry by tilting the arc reflection chamber 150 relative to the reference plane R, thereby reducing the formation of standing waves in the shell 15 and reducing unnecessary resonance and unnatural vibrational sound waves. The aforementioned structure can retain a more complete sound transmission effect, making the original sound more realistic and significantly improving the clarity of the sound. (3) Since the housing 15 or the arc-shaped reflective chamber 150 is tilted, it helps to reduce the probability of standing wave generation. In other words, the aforementioned design increases the number of propagation and reflection of sound waves within the speaker structure 1. In addition, placing the bass reflex tube 111 at a higher position in the tilted state of the housing 15 or the arc-shaped reflective chamber 150 can also extend the path of reflected sound waves from the port of the bass reflex tube 111. Combining the above, it achieves an effect similar to increasing the speaker volume.

[0029] Note that the above description is only a preferred embodiment of the present invention. However, the scope of the rights claimed by the present invention is not limited thereto. All equivalent variations that can be easily conceived by those skilled in the art based on the technical content disclosed in the present invention should be included within the protection scope of the present invention.

[0030] 1: Speaker structure 11: Box 11A: Front cover 11B: Hollow Boxes 111: Phase Inverter 1110: Internal piping space 13: Speaker 15: Casing 150: Circular arc reflection chamber R: Reference plane θ X: Lateral angle θ Y: Vertical angle

Claims

1. A speaker cabinet structure with an inclined, arc-shaped reflective chamber, comprising: One box; A loudspeaker is mounted on the front side of the enclosure, and the front side of the loudspeaker forms a reference plane located on a coordinate plane formed by the horizontal and vertical axes; and a housing is mounted on the rear side of the enclosure, with its front side recessed to form an arc-shaped reflective chamber. The arc-shaped reflective chamber has a three-dimensional arc configuration and is at least partially located in the direction of sound wave propagation of the loudspeaker within the enclosure, for reflecting the sound waves generated by the loudspeaker. The arc-shaped reflective chamber can be tilted along the horizontal axis and / or the vertical axis, respectively, so that a horizontal angle and / or a vertical angle are formed between the arc-shaped reflective chamber and the reference plane. The arc-shaped reflective chamber is arc-shaped in cross-section, and its arc angle range is less than 180 degrees.

2. The speaker structure as described in claim 1, wherein, The horizontal angle is greater than 0 degrees and less than 90 degrees, and the vertical angle is equal to 0 degrees.

3. The speaker structure as described in claim 1, wherein, The longitudinal angle is greater than 0 degrees and less than 90 degrees, and the transverse angle is equal to 0 degrees.

4. The speaker structure as described in claim 1, wherein, The horizontal angle is greater than 0 degrees and less than 90 degrees, and the vertical angle is greater than 0 degrees and less than 90 degrees.

5. The speaker structure as described in claim 1, wherein, The outer contour of the housing is the same as the shape of the arc-shaped reflective chamber.

6. The speaker structure as described in any one of claims 1 to 4 further includes at least one bass reflex port, wherein, The phase inverter has two connected openings at its ends, and the phase inverter is located at least near the higher position of the arc-shaped reflective chamber in its tilted orientation.

7. The speaker structure as described in claim 6, wherein, The phase inverter is recessed and extends inward from the front side of the housing.

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