Speaker structure and intelligent robot

Abstract

The present invention provides an intelligent robot, comprising a speaker structure and a shell. The speaker structure is arranged in the shell and comprises a plate, a speaker and a sound wave reflection cone. The plate, the speaker and the sound wave reflection cone are assembled in the shell. The speaker structure comprises a plurality of sound-speaker holes and a first boss and a second boss extending toward the interior of the shell. The sound-speaker holes are arranged in the shell around an axis and are located between the first boss and the second boss. The plate is assembled on the first boss, the speaker is assembled on the plate, and the sound wave reflection cone is arranged on the second boss. The sound wave reflection cone and the speaker are arranged along the axis and face each other. The speaker and the sound wave reflection cone are symmetrical about the axis. The sound waves generated by the speaker are reflected by the sound wave reflection cone and transmitted out of the shell from the sound-speaker hole. The intelligent robot of the present invention can provide a sound wave transmission effect with an omnidirectional range.

Description

Technical Field

[0001] The present invention relates to a loudspeaker structure and an intelligent robot. Background Art

[0002] With the advancement of smart device manufacturing and R&D, a special type of intelligent robot has begun to enter everyday life. A so-called intelligent robot is a multifunctional smart device, essentially integrating various smart devices into a single smart device. For example, a smart robot might integrate the speaker system of an audio player and the projection system of a video player, enabling voice conversations with smart voice devices, as well as other functions.

[0003] However, intelligent robots with integrated speaker structures have limitations in the directionality of sound wave transmission. Specifically, the user and the intelligent robot are typically assumed to be facing each other. Therefore, existing technologies require the speaker to transmit sound waves only in a forward direction. However, if multiple users are present, or if a user is positioned behind the intelligent robot, the user cannot clearly discern the sound emitted by the intelligent robot. Consequently, the intelligent robot's sound transmission range is limited to the area in front of it, significantly limiting the user-robot interaction. Therefore, providing an omnidirectional sound wave transmission structure to overcome these limitations and enhance human-robot interaction has become a challenge for those skilled in the art.

[0004] This "Background" section is intended only to facilitate understanding of the present invention. Therefore, the information disclosed in this section may contain information that does not constitute prior art known to those skilled in the art. The information disclosed in this section does not imply that the information or the problems to be solved by one or more embodiments of the present invention were known or understood by those skilled in the art prior to the filing of this application. Summary of the Invention

[0005] The present invention provides a loudspeaker structure and an intelligent robot, which enable the intelligent robot to provide a sound wave transmission effect in an omnidirectional range.

[0006] Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

[0007] In order to achieve one or part or all of the above-mentioned purposes or other purposes, one embodiment of the present invention proposes a speaker structure for being configured in a shell. The speaker structure includes a plate, a speaker and a sound wave reflection cone. The plate, the speaker and the sound wave reflection cone are assembled in the shell. The speaker structure includes a plurality of sound holes and a first boss and a second boss extending toward the inside of the shell. The sound holes are configured in the shell around an axis and are located between the first boss and the second boss. The plate is assembled on the first boss, the speaker is assembled on the plate, and the sound wave reflection cone is arranged on the second boss. The sound wave reflection cone and the speaker are arranged along the axis and face each other. The speaker and the sound wave reflection cone are symmetrical about the axis. The sound waves generated by the speaker are reflected by the sound wave reflection cone and transmitted out of the shell from the sound hole.

[0008] In order to achieve one or part or all of the above-mentioned purposes or other purposes, one embodiment of the present invention proposes an intelligent robot, including a speaker structure and a shell. The speaker structure is arranged in the shell and includes a plate, a speaker and a sound wave reflection cone. The plate, the speaker and the sound wave reflection cone are assembled in the shell. The speaker structure includes a plurality of sound holes and a first boss and a second boss extending toward the inside of the shell. The sound holes are arranged in the shell around an axis and are located between the first boss and the second boss. The plate is assembled on the first boss, the speaker is assembled on the plate, and the sound wave reflection cone is arranged on the second boss. The sound wave reflection cone and the speaker are arranged along the same axis and face each other. The speaker and the sound wave reflection cone are symmetrical about the axis. The sound waves generated by the speaker are reflected by the sound wave reflection cone and transmitted out of the shell from the sound hole.

[0009] Based on the above, the speaker structure comprises a plate and a sound wave reflection cone disposed on the first and second bosses within the housing, respectively. The speaker is then mounted on the plate, with the speaker and the sound wave reflection cone coaxially facing each other. Consequently, sound waves generated by the speaker are reflected by the sound wave reflection cone and then transmitted out of the housing through the sound-emitting holes arranged around the axis, thereby achieving omnidirectional sound wave transmission.

[0010] Furthermore, because the sound wave reflection cone is symmetrical relative to the axis—that is, it is an axisymmetric cone with its tip located on the axis—it can correspond to the speaker holes also arranged around the axis, thereby smoothly reflecting the sound waves transmitted from the speaker and then transmitting them out of the housing through these speaker holes. This effectively converts unidirectional sound waves (emitted from the speaker) into omnidirectional sound waves. Accordingly, an intelligent robot utilizing this speaker structure can successfully generate omnidirectional sound waves, allowing the user to clearly hear the sound emitted by the speaker regardless of their position relative to the intelligent robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. 4 is a schematic diagram of an intelligent robot according to an embodiment of the present invention.

[0012] Figure 2 yes Figure 1 A partial schematic diagram of an intelligent robot.

[0013] Figure 3 yes Figure 1 An exploded diagram of some components of an intelligent robot.

[0014] Figure 4 yes Figure 1 A partial cross-sectional view of an intelligent robot.

[0015] Figure 5 A frequency response graph showing whether a speaker structure has acoustically transparent fabric or not.

[0016] Figure 6 and Figure 7 A frequency response diagram of the speaker hole of a speaker structure at different opening ratios is shown.

[0017] Reference Signs List

[0018] 10: Intelligent Robot

[0019] 11: Shell

[0020] 100: Speaker structure

[0021] 110: first boss

[0022] 120: Second boss

[0023] 130: Plate

[0024] 140: Speaker

[0025] 150: Sound wave reflection cone

[0026] 160: Speaker hole

[0027] 170: Projection module

[0028] 180: Cover

[0029] 190: Sound-permeable fabric

[0030] 200: Control module

[0031] A1: Head

[0032] A2: Neck

[0033] A3: Body

[0034] C1: Diaphragm center

[0035] C2: cone tip

[0036] D1, D2: direction

[0037] H1, H2, K1, K2, K3: curve

[0038] L1: axis

[0039] N1: First cavity

[0040] N2: Second cavity

[0041] N3: Space

[0042] P1, P2: Benchmark

[0043] R1: Ring area

[0044] S1: plane

[0045] S2: Smooth surface

[0046] t1: thickness

[0047] W1, W2: screws. DETAILED DESCRIPTION

[0048] The foregoing and other technical aspects, features, and benefits of the present invention will be more clearly understood in the following detailed description of a preferred embodiment with reference to the accompanying drawings. Directional terms such as up, down, left, right, front, and back, used in the following embodiments, are merely references to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes only and are not intended to limit the present invention.

[0049] Figure 1 FIG. 4 is a schematic diagram of an intelligent robot according to an embodiment of the present invention. Figure 2 yes Figure 1 A partial schematic diagram of the intelligent robot. Please also refer to Figure 1 and Figure 2 In this embodiment, the intelligent robot 10 includes a head A1, a neck A2, and a body A3 (including limbs). The head A1 and neck A2 are hollow shells 11, while the torso of the body A3 can be hollow or solid depending on actual design requirements, and the present invention is not limited thereto. The interior of the shell 11 houses a speaker structure 100. Here, the speaker structure 100 has a sound-producing function, enabling interaction with the user. The various components will be described below.

[0050] Figure 3 yes Figure 1 Exploded diagram of some components of the intelligent robot. Please also refer to Figure 2 and Figure 3As previously described, the speaker structure 100 is configured to be disposed within the housing 11. In this embodiment, the speaker structure 100 includes a panel 130, a speaker 140, and a sound wave reflection cone 150 assembled within the housing 11. Furthermore, the speaker structure 100 also includes a plurality of sound holes 160 disposed within the housing 11, and a first boss 110 and a second boss 120 extending toward the interior of the housing 11. The sound holes 160 are disposed about an axis L1 within the neck portion A2 of the housing 11 and are located between the first boss 110 and the second boss 120. Here, the plate 130 is assembled on the first boss 110, the speaker 140 is assembled on the plate 130, and the sound wave reflection cone 150 is assembled on the second boss 120, wherein the sound wave reflection cone 150 and the speaker 140 are arranged along the axis L1 and face each other, and the speaker 140 and the sound wave reflection cone 150 are symmetrical about the axis L1, so that the sound waves generated by the speaker 140 are reflected by the sound wave reflection cone 150 and transmitted out of the shell 11 from the sound hole 160.

[0051] Figure 4 yes Figure 1 Partial cross-sectional view of the intelligent robot. Please also refer to Figure 3 and Figure 4 Specifically, the first boss 110 and the second boss 120 are provided on the inner wall structure of the housing 11 and extend from the inner wall toward the interior of the housing 11. They can be manufactured by means of component assembly or integral molding. Figure 4As shown, the direction in which the speaker 140 is assembled to the plate 130 positioned on the first boss 110 is the same as the direction D2 in which the sound wave reflection cone 150 is assembled to the second boss 120. The direction D1 in which the plate 130 is assembled to the first boss 110 and the direction D2 in which the sound wave reflection cone 150 is assembled to the second boss 120 are opposite each other. The first boss 110 and the plate 130 form a plane S1, while the second boss 120 and the conical reflective surface of the sound wave reflection cone 150 form a smooth surface S2, with the plane S1 and smooth surface S2 facing each other. In this embodiment, the speaker 140 is fixed to the plate 130. The plate 130 is essentially fastened to the first boss 110 via screws W2, while the sound wave reflection cone 150 is fastened to the second boss 120 via screws W1. The screws W2 securing the plate 130 are not located on the plane S1, and the screws W1 securing the sound wave reflection cone 150 are not located on the smooth surface S2. Accordingly, the first boss 110, the second boss 120, the plate 130, the speaker 140, and the sound wave reflection cone 150, together with a portion of the housing 11, can form a first sound cavity N1 of the speaker 140 within the housing 11, and the sound hole 160 configured in the housing 11 is arranged around the first sound cavity N1. In other embodiments, the plate 130 that secures the speaker 140 can be secured to the first boss 110 via adhesive or a latch structure, and the sound wave reflection cone 150 can be secured to the second boss 120 via adhesive or a latch structure. The present invention is not limited to these securing methods. Furthermore, in other embodiments, the screw W2 that secures the plate 130 can be located on the flat surface S1, while the screw W1 that secures the sound wave reflection cone 150 can be located on the smooth surface S2. The present invention is not limited to these methods.

[0052] Furthermore, the housing 11 has an annular region R1. In this embodiment, the annular region R1 is located at the neck portion A2 of the housing 11. The annular region R1 surrounds the first boss 110, the second boss 120, the speaker 140, the plate 130, and the sound wave reflection cone 150. The sound-speaker hole 160 is located in the annular region R1, and the orthographic projection of the sound-speaker hole 160 on the axis L1 is aligned with the first boss 110 and the second boss 120. In other words, Figure 4 As shown, as the component structure of the first sound cavity N1, the orthographic projection of the above-mentioned plane S1 on the axis L1 has a reference P1, and the orthographic projection of the outer edge of the smooth surface S2 on the axis L1 has a reference P2. The outer edge of the smooth surface S2 is, for example, the connection between the conical reflective surface and the second boss 120. The first boss 110 corresponds to the reference P1, the second boss 120 corresponds to the reference P2, and the annular area R1 is located between the references P1 and P2. More importantly, aligning the sound speaker holes 160 of the first boss 110 and the second boss 120 is also equivalent to aligning the references P1 and P2. Accordingly, the range of the sound speaker hole 160 along the axis L1 can correspond to and be consistent with the sound wave reflection range of the sound wave reflection cone 150, so as to ensure that the sound waves reflected by the sound wave reflection cone 150 can all be transmitted out of the shell 11 through the sound speaker hole 160 without loss.

[0053] If the orthographic projection range of the sound-speaker hole 160 along the axis L1 is lower than the references P1 and P2, it is easy to cause phase interference of the sound waves. Figures 2 to 4 As shown, the speaker structure 100 also includes a cover 180 for assembling to the plate 130 and covering the speaker 140. If the speaker structure 100 does not use the cover 180, sound waves will leak when the orthographic projection range of the speaker hole 160 along the axis L1 exceeds the reference P1. In addition, screws W1 and W2 are used to lock the sound wave reflection cone 150 and the plate 130 in opposite directions to ensure that there is no additional structural interference between the plane S1 and the smooth surface S2, which is more conducive to the transmission of sound waves in the first sound cavity N1 to avoid attenuation. At the same time, the first sound cavity N1 is connected to the external environment only through the speaker hole 160, which can effectively prevent foreign objects from entering the first sound cavity N1 and interfering with the sound waves transmitted therein, while also providing protection for the diaphragm component of the speaker 140.

[0054] Based on the above, since the sound wave reflection cone 150 is a conical disk symmetrical with respect to the axis L1, and its cone tip C2 is located on the axis L1, and the center C1 of the diaphragm of the speaker 140 is also located on the axis L1 and opposite the cone tip C2, it can correspond to the sound holes 160 arranged around the axis L1. Therefore, the sound waves transmitted from the speaker 140 are smoothly reflected by the conical reflective surface of the sound wave reflection cone 150 and then transmitted out of the housing 11 through these sound holes 160. In other words, the distribution range of the sound holes 160 is equivalent to encompassing the sound waves transmitted from the first sound cavity N1 out of the housing 11. In this way, the unidirectional sound waves transmitted from the speaker 140 to the sound wave reflection cone 150 can be smoothly converted into omnidirectional sound waves. The reflected sound waves are then transmitted out of the housing 11 in a 360-degree radial pattern with the axis L1 as the center (for example, the periphery of the plane with the axis L1 as the normal). In this embodiment, the material of the sound wave reflection cone 150 and the plate 130 is not limited, and they can be made of plastic, metal, ceramic, glass, or wood. Materials with smoother surfaces and lower sound absorption coefficients can achieve better reflection effects.

[0055] On the other hand, please refer to Figure 2 and Figure 4 The intelligent robot 10 of this embodiment further includes a projection module 170 and a control module 200, wherein the projection module 170 and the control module 200 are disposed within the housing 11, and the control module 200 is electrically connected and used to drive the projection module 170 and the speaker 140, and the projection module 170 and the sound wave reflection cone 150 are located on opposite sides of the plate 130. Figure 1 、 Figure 2 and Figure 4As shown, the projection module 170 is, for example, disposed within the head A1 of the intelligent robot 10. By incorporating the projection module 170 and the speaker structure 100, the intelligent robot 10 not only has the function of projecting images but also further provides the interactive effects desired by the user. In this embodiment, the cover 180 is sealingly assembled to the panel 130 and covers the speaker 140, thereby forming a second sound cavity N2 for the speaker 140. Furthermore, while forming the second sound cavity N2, the cover 180 also forms a space N3 with a portion of the housing 11. The projection module 170 is not located within the second sound cavity N2, but rather within the space N3. In this way, the cover 180 can effectively isolate the second sound cavity N2 from the space N3, thereby preventing the sound waves of the speaker 140 from being transmitted to the space N3 and affecting the projection module 170. At the same time, because the second sound cavity N2 formed by the cover 180 has a specific shape, the user can select a corresponding cover 180 based on the frequency spectrum characteristics of the speaker 140 to prevent the shape, size, or material of the housing 11 from affecting the sound wave spectrum of the speaker 140 when the cover 180 is not present.

[0056] Here, the first sound cavity N1 and the second sound cavity N2 are located on opposite sides of the plate 130 and the first boss 110, respectively. The first sound cavity N1 and the second sound cavity N2 are separated by the plate 130 and the first boss 110, thereby effectively preventing sound waves from the second sound cavity from being transmitted to the first sound cavity. Furthermore, if the cover 180 is not used, the plate 130, the first boss 110, and a portion of the housing 11 form a space N3. The first sound cavity N1 and the space N3 are located on opposite sides of the plate 130 and the first boss 110, respectively. The first sound cavity N1 and the space N3 are separated by the plate 130 and the first boss 110, thereby preventing sound waves from the speaker 140 from being transmitted to the space N3 and affecting the projection module 170.

[0057] The speaker structure 100 of this embodiment further includes a sound-transparent fabric 190 , which is disposed outside the housing 11 and covers the speaker hole 160 . For example, the fabric 190 is disposed on the neck A2 of the intelligent robot 10 . This fabric 190 serves to modify the appearance of the intelligent robot 10 , preventing users from easily seeing the speaker hole 160 and the structure within the housing 11 . It also provides a dust-proof effect. Figure 5 A frequency response graph showing whether the speaker structure has acoustically transparent fabric, which is used to show the corresponding relationship between the frequency of the sound wave and the sound pressure level (SPL). Figure 5 , wherein curve H1 represents the frequency response state without the sound-transmitting fabric 190, and curve H2 represents the frequency response state with the sound-transmitting fabric 190. Figure 5It can be seen that although the sound-permeable fabric 190 will slightly attenuate high-frequency sound waves, the degree of attenuation is actually less than 3dB, so it will not actually make a significant difference to the user's hearing. In addition, the sound-permeable fabric 190 also has the effect of modifying the timbre. Depending on the type of speaker, different materials of sound-permeable fabric can be used to produce different degrees of attenuation of high-frequency sound waves.

[0058] It should also be mentioned that the shape of the speaker hole 160 of the present invention is not limited. Figures 2 to 4 The holes shown are fence holes, but in other embodiments not shown, they may also be hexagonal holes, square holes, elliptical holes or round holes. Figure 4 In this embodiment, for the speaker structure 100, in addition to the opening range of the speaker hole 160, the material of the housing 11, the thickness t1 of the annular region R1, and the aperture ratio of the speaker hole 160 in the annular region R1 also affect the transmitted sound waves. The aperture ratio is essentially equal to the total opening area of the speaker holes divided by the surface area of the annular region R1: aperture ratio = (total opening area of the speaker holes) / (surface area of the annular region) x 100%.

[0059] For example, if the housing 11 is made of metal with a thickness of 1 mm in the annular region R1, the opening ratio of the speaker hole 160 in the annular region R1 should be at least 15% to ensure the quality of sound transmitted from the housing 11. Alternatively, if the housing 11 is made of plastic with a thickness of 2 mm in the annular region R1, the opening ratio of the speaker hole 160 in the annular region R1 should be at least 20% to ensure a relatively good sound effect from the housing 11.

[0060] Figure 6 and Figure 7 This diagram shows the frequency response of the speaker holes in the speaker structure at different opening ratios. Please also refer to Figure 6 and Figure 7 , using a plastic material with a thickness of 2mm (such as ABS) to set the speaker holes 160 with different opening ratios, wherein the curve K1 represents the speaker hole 160 with an opening ratio of 100%, which is equivalent to a completely open space, while the curve K2 represents the speaker hole 160 with an opening ratio of 20%, and the curve K3 represents the speaker hole 160 with an opening ratio of 10%. Figure 6 It can be seen that high-frequency sound waves will be attenuated due to the influence of the speaker hole with an opening rate of 20%, but the frequency range with the most serious attenuation is still within the 1 / 3 octave band, and the other frequencies are not significantly attenuated. Therefore, the sound waves transmitted from the housing 11 are still within the user's auditory acceptance range. Figure 7 , the attenuation degree and the affected bandwidth of the sound wave are greater than Figure 6 As shown, it has seriously affected the user's hearing effect.

[0061] In summary, in the above-mentioned embodiment of the present invention, the speaker structure is to respectively provide a plate and a sound wave reflection cone on the first boss and the second boss in the shell, and to provide the speaker on the plate, so that the speaker and the sound wave reflection cone are coaxial and face each other. Accordingly, the sound waves generated by the speaker are reflected by the sound wave reflection cone and then transmitted out of the shell from the sound-emitting holes provided around the axis, thereby achieving an omnidirectional sound wave transmission effect. In more detail, although the above-mentioned embodiment of the present invention only illustrates the cover, speaker, plate and sound wave reflection cone arranged in sequence from the head to the neck direction of the shell in the speaker structure, in other embodiments, the speaker structure may also include, for example, a sound wave reflection cone, plate, speaker and cover arranged in sequence from the head to the neck direction of the shell, and the present invention is not limited thereto.

[0062] Furthermore, since the sound wave reflection cone is a conical disk that is symmetrical relative to the axis, its cone tip is located on the axis, and the center of the speaker's diaphragm is also located on the axis to be opposite to the cone tip, it can correspond to the sound speaker holes that are also arranged around the axis, and successfully convert the unidirectional sound waves transmitted from the speaker to the sound wave reflection cone into omnidirectional sound waves, and the reflected sound waves will radiate out of the shell in a 360-degree pattern with the axis as the center (for example, a plane with the axis as the normal).

[0063] In this way, no matter where the user is located on the intelligent robot, he or she can clearly hear the sound emitted by the speaker structure, and the speaker structure is no longer limited in its range of interaction with the user due to the directionality of the sound.

[0064] The above description is only a preferred embodiment of the present invention and cannot be used to limit the scope of implementation of the present invention. That is, any simple equivalent changes and modifications made in accordance with the claims and description of the present invention are still within the scope of the patent of the present invention. In addition, any embodiment or claim of the present invention does not need to achieve all the purposes, advantages or features disclosed in the present invention. In addition, the abstract of the specification and the name of the invention are only used to assist in patent document retrieval and are not used to limit the scope of rights of the present invention. In addition, the terms "first", "second", etc. mentioned in this specification or claims are only used to name the name of the element or to distinguish different embodiments or scopes, and are not used to limit the upper or lower limit of the number of elements.

[0065] Although the present invention has been disclosed above with reference to the embodiments, they are not intended to limit the present invention. Any person skilled in the art may make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the claims.

Claims

1. A speaker structure, characterized in that: The speaker structure is configured to be arranged in a housing, and includes: a plate, a speaker, a sound wave reflection cone, and a cover. The plate, the speaker, the sound wave reflection cone, and the cover are assembled in the housing; wherein, The speaker structure includes a plurality of sound holes and a first boss and a second boss extending toward the interior of the housing. The plurality of sound holes are arranged around an axis in the housing and located between the first boss and the second boss. The plate is assembled on the first boss; The speaker is assembled on the panel; The sound wave reflection cone is disposed on the second boss, wherein the sound wave reflection cone and the speaker are disposed along the axis and face each other, the speaker and the sound wave reflection cone are symmetrical about the axis, the first boss, the second boss, the plate, the speaker, and the sound wave reflection cone form a first sound cavity of the speaker within the housing, the multiple sound holes are disposed around the first sound cavity, and sound waves generated by the speaker are reflected by the sound wave reflection cone and then transmitted out of the housing through the multiple sound holes; The cover is sealingly assembled to the panel and covers the speaker to form a second sound cavity of the speaker. The first sound cavity and the second sound cavity are respectively located on opposite sides of the panel and the first boss. The panel and the first boss isolate the first sound cavity and the second sound cavity, so that the first sound cavity and the second sound cavity are not connected to each other. The cover and a part of the shell form a space, and the cover isolates the second sound cavity from the space.

2. The loudspeaker structure according to claim 1, characterized in that The first boss and the plate form a plane, and the plane faces the sound wave reflection cone and the second boss.

3. The speaker structure according to claim 1, characterized in that The second boss and the conical surface of the sound wave reflection cone form a smooth surface, and the smooth surface faces the plate and the first boss.

4. The loudspeaker structure according to claim 1, characterized in that The direction in which the plate is assembled to the first boss is opposite to the direction in which the sound wave reflection cone is assembled to the second boss. The first boss and the plate form a plane, and the second boss and the conical surface of the sound wave reflection cone form a smooth surface. The plane and the smooth surface face each other.

5. The loudspeaker structure according to claim 4, characterized in that: The plate is fastened to the first boss by at least one screw, and the sound wave reflection cone is fastened to the second boss by at least one screw. The at least one screw fastening the plate is not located on the plane, and the at least one screw fastening the sound wave reflection cone is not located on a smooth surface.

6. The loudspeaker structure according to claim 1, characterized in that The shell has an annular area surrounding the first boss, the second boss, the speaker, the plate and the sound wave reflection cone. The multiple sound holes are located in the annular area, and the orthographic projection range of each of the multiple sound holes on the axis is aligned with the orthographic projection of the first boss and the second boss on the axis.

7. The loudspeaker structure according to claim 6, characterized in that: The annular region is made of a metal material with a thickness of 1 mm, and an opening ratio of the plurality of sound-speaker holes in the annular region is at least greater than 15%.

8. The loudspeaker structure according to claim 6, characterized in that The annular area is made of a plastic material with a thickness of 2 mm, and an opening ratio of the plurality of sound-speaker holes in the annular area is at least greater than 20%.

9. The loudspeaker structure according to claim 1, characterized in that The speaker structure further includes a sound-transmitting cloth, which is arranged outside the shell and covers the plurality of sound-speaker holes.

10. The loudspeaker structure according to claim 1, characterized in that The projection module and the sound wave reflection cone disposed in the housing are located on opposite sides of the plate, and the projection module is located outside the second sound cavity.

11. An intelligent robot, characterized in that: include: A speaker structure and a housing, wherein the speaker structure is configured in the housing and comprises a plate, a speaker, a sound wave reflection cone, and a cover, wherein the plate, the speaker, the sound wave reflection cone, and the cover are assembled in the housing; wherein, The speaker structure includes a plurality of sound holes and a first boss and a second boss extending toward the interior of the shell, the plurality of sound holes are arranged in the shell around an axis and are located between the first boss and the second boss, the plate is assembled on the first boss, the speaker is assembled on the plate, and the sound wave reflection cone is arranged on the second boss, wherein the sound wave reflection cone and the speaker are arranged along the axis and face each other, the speaker and the sound wave reflection cone are symmetrical about the axis, the speaker, the plate, the sound wave reflection cone and a part of the shell form a first sound cavity, and the plurality of speakers The holes are arranged around the first sound cavity, and the sound waves generated by the speaker are reflected by the sound wave reflection cone and then transmitted out of the shell from the multiple sound holes. The cover is sealedly assembled to the plate and covers the speaker to form a second sound cavity of the speaker. The first sound cavity and the second sound cavity are respectively located on opposite sides of the plate and the first boss. The plate and the first boss isolate the first sound cavity and the second sound cavity, so that the first sound cavity and the second sound cavity are not connected to each other. The cover and a part of the shell form a space, and the cover isolates the second sound cavity from the space.

12. The intelligent robot according to claim 11, characterized in that: The shell is the head and neck of the intelligent robot, and the plurality of speaker holes are located on the neck of the intelligent robot.

13. The intelligent robot according to claim 11, wherein: The first boss and the plate form a plane, and the plane faces the sound wave reflection cone and the second boss.

14. The intelligent robot according to claim 11, wherein: The second boss and the conical surface of the sound wave reflection cone form a smooth surface, and the smooth surface faces the plate and the first boss.

15. The intelligent robot according to claim 11, wherein: The direction in which the plate is assembled to the first boss is opposite to the direction in which the sound wave reflection cone is assembled to the second boss. The first boss and the plate form a plane, and the second boss and the conical surface of the sound wave reflection cone form a smooth surface. The plane and the smooth surface face each other.

16. The intelligent robot according to claim 15, characterized in that: The plate is fastened to the first boss by at least one screw, and the sound wave reflection cone is fastened to the second boss by at least one screw. The at least one screw fastening the plate is not located on the plane, and the at least one screw fastening the sound wave reflection cone is not located on a smooth surface.

17. The intelligent robot according to claim 11, wherein: The shell has an annular area surrounding the first boss, the second boss, the speaker, the plate and the sound wave reflection cone. The multiple sound holes are located in the annular area, and the orthographic projection range of each of the multiple sound holes on the axis is aligned with the orthographic projection of the first boss and the second boss on the axis.

18. The intelligent robot according to claim 17, wherein: The annular region is made of a metal material with a thickness of 1 mm, and an opening ratio of the plurality of sound-speaker holes in the annular region is at least greater than 15%.

19. The intelligent robot according to claim 17, wherein: The annular area is made of a plastic material with a thickness of 2 mm, and an opening ratio of the plurality of sound-speaker holes in the annular area is at least greater than 20%.

20. The intelligent robot according to claim 11, wherein: The intelligent robot further includes a sound-permeable fabric disposed outside the shell and covering the plurality of sound-speaker holes.

21. The intelligent robot according to claim 11, wherein: The intelligent robot also includes a projection module, wherein: The projection module is disposed in the housing, and the projection module and the sound wave reflection cone are located on opposite sides of the plate.

Images