Speaker structure and smart robot

Abstract

To provide a speaker structure and a smart robot, which can achieve an omnidirectional effect of sound wave transmission.SOLUTION: A smart robot includes a speaker structure 110 and a shell body. The speaker structure is disposed in the shell body and includes a plate 130, a speaker 140, and a conical acoustic reflector 150. The plate, the speaker and the conical acoustic reflector are assembled in the shell body. The speaker structure includes a plurality of speaker holes 160, and a first stage 110 and a second stage 120 extending into the shell body. The speaker holes surround an axis to be disposed at the shell body and are located between the first stage and the second stage. The plate is assembled to the first stage. The speaker is assembled to the plate. The conical acoustic reflector is disposed on the second stage. The conical acoustic reflector and the speaker are disposed along the axis and face each other. Each of the speaker and the conical acoustic reflector is symmetrical about the axis. A sound wave generated by the speaker is transmitted to the outside of the shell body from the speaker holes after being reflected via the conical acoustic reflector.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a speaker structure and a smart robot. [Background technology]

[0002] With the development of intelligent device manufacturing and research and development, a known special smart robot has begun to appear in daily life. The so-called smart robot is an intelligent device with various functions, which corresponds to an intelligent device integrating intelligent devices with different functions. For example, in a smart robot, a speaker system of an audio playback device and a projection system of a video playback device may be integrated to realize the voice dialogue function and other various functions of an intelligent audio device.

[0003] However, when it comes to a smart robot with an integrated speaker structure, the directivity of the sound waves is limited, that is, the user and the smart robot are usually preset to face each other, so the prior art drives the speaker to propagate sound waves only forward. Once the smart robot faces multiple users or the user is behind the smart robot, the user cannot clearly recognize the sound from the smart robot. Therefore, by limiting the broadcast range of the smart robot to the local space in front of it, the interaction between the user and the smart robot is obviously limited. Therefore, how to provide an omnidirectional sound wave propagation structure to improve the above-mentioned limitations and improve the effect of human-machine interaction is a problem that needs to be considered and solved by those skilled in the art.

[0004] Note that the "Background Art" section is intended only to aid in understanding the present invention, and therefore the contents disclosed in the "Background Art" section may include techniques not known to those skilled in the art. Therefore, the contents disclosed in the "Background Art" section do not mean that the contents or the problems that one or more embodiments of the present invention are intended to solve were already known to those skilled in the art prior to the filing of the present invention. Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a speaker structure and a smart robot that can achieve an omnidirectional sound wave propagation effect.

[0006] Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention. [Means for solving the problem]

[0007] In order to achieve one, some, all or other of the above objects, an embodiment of the present invention provides a speaker structure disposed in a shell. The speaker structure includes a plate, a speaker, and a sound-reflecting cone. The plate, the speaker, and the sound-reflecting cone are assembled in the shell. The speaker structure includes a plurality of speaker holes and a first convex base portion and a second convex base portion extending into the inside of the shell, the speaker holes surround an axis disposed in the shell and are located between the first convex base portion and the second convex base portion. The plate is assembled on the first convex base portion, the speaker is assembled on the plate, and the sound-reflecting cone is disposed on the second convex base portion. The sound-reflecting cone and the speaker are disposed along the axis and face each other, the speaker and the sound-reflecting cone are respectively symmetrical with respect to the axis, and the sound waves generated by the speaker propagate from the speaker hole to the outside of the shell after being reflected by the sound-reflecting cone.

[0008] In order to achieve one, some, all or other of the above objects, in one embodiment of the present invention, a smart robot is provided, which includes a speaker structure and a shell. The speaker structure is disposed on the shell and includes a plate, a speaker and a sound-reflecting cone. The plate, the speaker and the sound-reflecting cone are assembled in the shell. The speaker structure includes a plurality of speaker holes and a first convex base part and a second convex base part extending inside the shell, the speaker hole surrounds an axis disposed on the shell and is located between the first convex base part and the second convex base part. The plate is assembled on the first convex base part, the speaker is assembled on the plate, and the sound-reflecting cone is disposed on the second convex base part. The sound-reflecting cone and the speaker are disposed along the axis and face each other, the speaker and the sound-reflecting cone are respectively symmetrical with respect to the axis, and the sound waves generated by the speaker propagate from the speaker hole to the outside of the shell after being reflected by the sound-reflecting cone.

[0009] As described above, in the speaker structure, a plate and a sound-reflecting cone are respectively installed on the first convex base and the second convex base in the shell, and the speaker is installed on the plate, and the speaker and the sound-reflecting cone are coaxial and facing each other, so that the sound waves generated by the speaker are reflected by the sound-reflecting cone and then propagate to the outside of the shell through the speaker hole installed around the axis, thereby achieving an omnidirectional sound propagation effect.

[0010] Moreover, the sound reflection cone is symmetrical with respect to the axis, i.e., the sound reflection cone is an axisymmetric cone, and its cone tip is located on the axis, so that the sound reflection cone can correspond to the speaker holes that are also installed around the axis. Therefore, after the sound waves propagating from the speakers are reflected, they can be smoothly propagated to the outside of the shell through these speaker holes. In this way, the unidirectional sound waves (from the speakers) can be smoothly converted into omnidirectional sound waves. Therefore, the smart robot using the speaker structure can smoothly generate omnidirectional sound waves, and the user can clearly hear the sound from the speaker no matter what direction the smart robot is in.

[0011] In order to make the above-mentioned features and advantages of the present invention more apparent, the present invention will now be described in detail with reference to the accompanying drawings, in which: FIG. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 illustrates a smart robot in one embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram showing a portion of the smart robot of FIG. 1. [Diagram 3] FIG. 2 is an exploded view of some components of the smart robot of FIG. [Figure 4] This is a cross-sectional view of a portion of the smart robot of Figure 1. [Diagram 5] FIG. 13 is a frequency response diagram of a speaker structure with and without an acoustically transparent cloth. [Figure 6] FIG. 11 is a frequency response diagram when the speaker hole of the speaker structure has different aperture ratios. [Figure 7] FIG. 11 is a frequency response diagram when the speaker hole of the speaker structure has different aperture ratios. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The above and other technical contents, features, functions and effects of the present invention will become clearer from the detailed description of the preferred embodiments based on the accompanying drawings. Note that the directional terms used in the following embodiments, such as up, down, left, right, front, rear, etc., are merely the directions in the accompanying drawings. Therefore, the directional terms used are only for the purpose of explaining the present invention, and are not intended to limit the present invention.

[0014] FIG. 1 is a diagram showing a smart robot according to an embodiment of the present invention. FIG. 2 is a diagram showing a part of the smart robot of FIG. 1. Please refer to FIG. 1 and FIG. 2 at the same time. In this embodiment, the smart robot 10 includes a head A1, a neck A2 and a body A3 (including limbs), in which the head A1 and the neck A2 are a hollow shell 11, and the trunk of the body A3 may be a hollow or solid structure according to the actual design needs, but the present invention is not limited thereto. The inside of the shell 11 is used to install a speaker structure 100. Here, the speaker structure 100 has a voice function and can perform relevant interactions with the user. Hereinafter, the different components will be described in detail respectively.

[0015] FIG 3 is an exploded view of some parts of the smart robot in FIG 1. Please refer to FIG 2 and FIG 3 at the same time. As mentioned above, the speaker structure 100 is installed in the shell 11, and the speaker structure 100 of this embodiment includes a plate 130, a speaker 140 and a sound reflection cone 150 assembled in the shell 11. In addition, the speaker structure 100 further includes a plurality of speaker holes 160 installed in the shell 11, and a first convex base part 110 and a second convex base part 120 extending into the inside of the shell 11, among which, the speaker hole 160 is installed in the neck part A2 of the shell 11 around the axis L1, and is located between the first convex base part 110 and the second convex base part 120. Here, the plate 130 is assembled to the first protruding base 110, the speaker 140 is assembled to the plate 130, and the sound wave reflecting cone 150 is assembled to the second protruding base 120, whereby the sound wave reflecting cone 150 and the speaker 140 are installed along the axis L1 and face each other, and the speaker 140 and the sound wave reflecting cone 150 are symmetrical with respect to the axis L1. Thus, the sound waves generated by the speaker 140 are reflected by the sound wave reflecting cone 150 and then propagate to the outside of the shell 11 through the speaker hole 160.

[0016] FIG. 4 is a cross-sectional view of a part of the smart robot of FIG. 1. Please refer to FIG. 3 and FIG. 4 at the same time. In detail, the first convex base 110 and the second convex base 120 are inner wall structures installed in the shell 11, and extend from the inner wall into the inside of the shell 11, and they may be made by means of parts assembly, integral molding, etc. As shown in FIG. 4, the direction in which the speaker 140 is assembled to the plate 130 positioned on the first convex base 110 is the same as the direction D2 in which the sound reflection cone 150 is assembled to the second convex base 120, and the direction D1 in which the plate 130 is assembled to the first convex base 110 is opposite to the direction D2 in which the sound reflection cone 150 is assembled to the second convex base 120, where the first convex base 110 and the plate 130 form a plane S1, the cone-shaped reflecting surface of the second convex base 120 and the sound reflection cone 150 form a smooth surface S2, and the plane S1 and the smooth surface S2 are opposite to each other. In this embodiment, the speaker 140 is fixed to the plate 130, the plate 130 is substantially locked to the first protruding base 110 by the screw W2, the sound reflection cone 150 is locked to the second protruding base 120 by the screw W1, the screw W2 for locking the plate 130 is not located on the plane S1, and the screw W1 for locking the sound reflection cone 150 is not located on the smooth surface S2. Thus, the first protruding base 110, the second protruding base 120, the plate 130, the speaker 140, the sound reflection cone 150, and a part of the shell 11 can form a first sound cavity N1 of the speaker 140 in the shell 11, and the speaker hole 160 arranged in the shell 11 is arranged to surround the first sound cavity N1. In another embodiment, the plate 130 for fixing the speaker 140 may be fixed to the first protruding portion 110 by adhesive or a mortise and tenon structure, and the sound reflection cone 150 may be fixed to the second protruding portion 120 by adhesive or a mortise and tenon structure, but the present invention is not limited to the fixing method. In another embodiment, the screw W2 for locking the plate 130 may be located on the flat surface S1, and the screw W1 for locking the sound reflection cone 150 may be located on the smooth surface S2, but the present invention is not limited thereto.

[0017] In addition, the shell 11 has an annular region R1, and in this embodiment, the annular region R1 is located at the neck A2 of the shell 11, and the annular region R1 surrounds the first convex base 110, the second convex base 120, the speaker 140, the plate 130 and the sound reflection cone 150, and the speaker hole 160 is located in the annular region R1, and the orthogonal projection range of the speaker hole 160 on the axis L1 is aligned with the first convex base 110 and the second convex base 120. That is, as shown in Fig. 4, the orthogonal projection range of the above-mentioned flat surface S1 and the smooth surface S2 as components of the first sound cavity N1 on the axis L1 has references P1 and P2, of which the first convex base 110 corresponds to the reference P1, the second convex base 120 corresponds to the reference P2, and the annular region R1 is between the references P1 and P2. More importantly, the speaker hole 160, which is aligned with the first protruding base portion 110 and the second protruding base portion 120, is also aligned with the references P1 and P2. As a result, the range of the speaker hole 160 along the axis L1 corresponds to and coincides with the sound reflection range of the sound reflection cone 150, so that it is possible to ensure that all sound waves reflected by the sound reflection cone 150 are transmitted to the outside of the shell 11 via the speaker hole 160 without any leakage.

[0018] When the range of the orthogonal projection along the axis L1 of the speaker hole 160 is lower than the reference P1, P2, it is easy to cause interference of the phase of the sound wave. In addition, as shown in FIG. 2 to FIG. 4, the speaker structure 100 further includes a cover part 180, which is used to assemble the plate 130 and cover the speaker 140. If the speaker structure 100 does not use the cover part 180, the sound wave may leak when the range of the orthogonal projection along the axis L1 of the speaker hole 160 exceeds the reference P1. In addition, the screws W1, W2 lock the sound wave reflection cone 150 and the plate 130 oppositely, which can ensure that the flat surface S1 and the smooth surface S2 have no unnecessary structural interference, which is more favorable for the propagation of the sound wave in the first sound cavity N1 and can avoid attenuation. In addition, since the first sound cavity N1 communicates with the outside environment only through the speaker hole 160, it is possible to effectively prevent interference with the sound waves propagating therein due to external objects entering the first sound cavity N1, and it is also possible to provide a protective effect for the diaphragm of the speaker 140.

[0019] As described above, the sound wave reflecting cone 150 is a cone-shaped disk symmetrical with respect to the axis L1, and its cone apex 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 faces the cone apex C2, so that it can correspond to the speaker holes 160 that are similarly installed around the axis L1. Therefore, after the sound waves propagating from the speaker 140 are reflected by the cone-shaped reflecting surface of the sound wave reflecting cone 150, they can be smoothly propagated outside the shell 11 via these speaker holes 160, that is, the distribution range of the speaker holes 160 corresponds to covering the sound waves propagating from the first sound cavity N1 to the outside of the shell 11. In this way, the unidirectional sound waves propagating from the speaker 140 to the sound wave reflecting cone 150 can be smoothly converted into omnidirectional sound waves, and the reflected sound waves can be propagated radially outside the shell 11 at 360 degrees around the axis L1 (for example, around a plane normal to the axis L1). In this embodiment, the materials of the sound wave reflecting cone 150 and the plate 130 are not limited, and they may be made of plastic materials, metal materials, ceramic materials, glass materials, or wood materials, and materials with a smooth surface and low sound absorption coefficient have a relatively good reflection effect.

[0020] 2 and 4. The smart robot 10 of this embodiment further includes a projection module 170 and a control module 200, in which the projection module 170 and the control module 200 are installed in the shell 11, the control module 200 is electrically connected to the projection module 170 and the speaker 140 for driving them, and the projection module 170 and the sound reflection cone 150 are located on opposite sides of the plate 130. More specifically, as shown in FIG. 1, FIG. 2 and FIG. 4, the projection module 170 is installed in the head A1 of the smart robot 10, for example, by installing the projection module 170 and the speaker structure 100, the smart robot 10 can provide the user with the necessary interaction effect in addition to having the function of image projection. In this embodiment, the cover part 180 is assembled to the plate 130 by sealing, and covers the speaker 140 to form the second sound cavity N2 of the speaker 140. More specifically, the cover 180 forms the second sound cavity N2 and also forms a space N3 with a part of the shell 11, and the aforementioned projection module 170 is not located in the second sound cavity N2 but in the space N3. In this way, the cover 180 effectively isolates the second sound cavity N2 from the space N3, so as to prevent the sound waves of the speaker 140 from propagating to the space N3 and affecting the projection module 170. In addition, the second sound cavity N2 formed by the cover 180 has a specific shape, that is, the user can select the corresponding cover 180 according to the frequency spectrum characteristics of the speaker 140. This can avoid the influence of the outer shape, size, and material of the shell 11 on the sound spectrum of the speaker 140 when the cover 180 is not present.

[0021] Here, the first sound cavity N1 and the second sound cavity N2 are located on opposite sides of the plate 130 and the first protruding base 110, respectively, and the first sound cavity N1 and the second sound cavity N2 do not communicate with each other due to the isolation function of the plate 130 and the first protruding base 110. Therefore, it is possible to effectively prevent the sound waves of the second sound cavity from propagating to the first sound cavity. In addition, when the cover part 180 is not used, the plate 130 and the first protruding base 110 form a space N3 with a part of the shell 11, and the first sound cavity N1 and the space N3 are located on opposite sides of the plate 130 and the first protruding base 110, respectively, and the first sound cavity N1 and the space N3 do not communicate with each other due to the isolation function of the plate 130 and the first protruding base 110. This prevents the sound waves of the speaker 140 from propagating to the space N3 and affecting the projection module 170.

[0022] The speaker structure 100 of this embodiment further includes an acoustically transparent cloth 190, which is installed on the outside of the shell 11 and covers the speaker hole 160. Here, take the acoustically transparent cloth 190 installed on the neck A2 of the smart robot 10 as an example, which decorates the appearance of the smart robot 10, prevents the user from seeing the speaker hole 160 and the structure inside the shell 11, and also provides the effect of dust prevention. FIG. 5 is a frequency response diagram of the speaker structure with and without an acoustically transparent cloth, which shows the corresponding relationship between the frequency of the sound wave and the sound pressure level (SPL). Please refer to FIG. 5. Curve H1 represents the frequency response state when the acoustically transparent cloth 190 is not arranged, and curve H2 represents the frequency response state when the acoustically transparent cloth 190 is arranged. As can be seen from FIG. 5, the acoustically transparent cloth 190 slightly attenuates the high frequency sound wave, but the degree of attenuation is actually less than 3 dB. Therefore, in reality, it does not bring about any obvious difference to the user's hearing. In addition, the acoustically transparent cloth 190 has the effect of decorating the sound, and by using acoustically transparent cloth made of different materials depending on the type of speaker, different degrees of attenuation of high frequency sound waves can be achieved.

[0023] It should be noted that the present invention is not limited to the outer shape of the speaker hole 160, and what is shown in Fig. 2 to Fig. 4 is a fence hole, but in other embodiments not shown, it may be a hexagonal hole, a square hole, an elliptical hole or a round hole. Also refer to Fig. 4. In this embodiment, in terms of the speaker structure 100, in addition to the above-mentioned opening area of ​​the speaker hole 160, the material of the shell 11, the thickness t1 of the annular region R1, and the opening ratio of the speaker hole 160 in the annular region R1 can also affect the propagating sound wave. Here, the opening ratio is substantially equal to the value obtained by dividing the sum of the opening areas of the speaker holes by the surface area of ​​the annular region R1, that is, the opening ratio = (sum of the opening areas of the speaker holes) / (surface area of ​​the annular region) x 100%.

[0024] For example, if the portion of the shell 11 in the annular region R1 is made of a metal material with a thickness of 1 mm, the aperture ratio of the speaker hole 160 in the annular region R1 must be at least 15% or more, thereby ensuring the quality of the sound propagating outward from the shell 11. Also, if the portion of the shell 11 in the annular region R1 is made of a plastic material with a thickness of 2 mm, the aperture ratio of the speaker hole 160 in the annular region R1 must be at least 20% or more, in order to have a relatively good effect on the sound propagating outward from the shell 11.

[0025] 6 and 7 are frequency response diagrams when the speaker holes of the speaker structure have different aperture ratios. Please refer to FIG. 6 and FIG. 7 at the same time. The speaker holes 160 with different aperture ratios are installed using a plastic material (e.g., ABS) with a thickness of 2 mm, where the curve K1 indicates that the aperture ratio of the speaker holes 160 is 100%, which corresponds to a completely open space, the curve K2 indicates that the aperture ratio of the speaker holes 160 is 20%, and the curve K3 indicates that the aperture ratio of the speaker holes 160 is 10%. As can be seen from FIG. 6, the high-frequency sound waves are attenuated by the effect of the speaker holes with an aperture ratio of 20%, but the frequency range where the degree of attenuation is relatively severe is still within the 1 / 3 octave band, and there is no obvious attenuation for other frequencies. Therefore, the sound waves propagating out of the shell 11 are still within the range of the user's hearing. Next, please refer to FIG. 7. The degree of sound wave attenuation and the bandwidth of influence shown in Figure 7 are both larger than those shown in Figure 6. Thus, in this case, the user's hearing effect is severely affected.

[0026] As described above, in the above embodiment of the present invention, in the speaker structure, a plate and a sound-reflecting cone are respectively installed on the first convex base and the second convex base in the shell, and the speaker is installed on the plate, and the speaker and the sound-reflecting cone are coaxial and facing each other. In this way, the sound waves generated by the speaker are reflected by the sound-reflecting cone and then propagate out of the shell through the speaker hole installed around the axis, thereby realizing an omnidirectional sound wave propagation effect. In addition, in the above embodiment of the present invention, it is only shown that the cover part, the speaker, the plate and the sound-reflecting cone are sequentially arranged along the head-to-neck direction of the shell in the speaker structure, but in other embodiments, for example, the sound-reflecting cone, the plate, the speaker and the cover part may be sequentially arranged along the head-to-neck direction of the shell in the speaker structure, but the present invention is not limited thereto.

[0027] Furthermore, the sound reflection cone is a cone-shaped disk symmetrical with respect to an axis, and the tip of the cone is located on the axis, and the center of the speaker diaphragm is also located on the axis and faces the tip of the cone, so that the sound reflection cone can correspond to the speaker holes similarly installed around the axis. This allows the unidirectional sound waves propagating from the speaker to the sound reflection cone to be smoothly converted into omnidirectional sound waves, and the reflected sound waves can propagate radially outward from the shell in 360 degrees around the axis (for example, in a plane normal to the axis).

[0028] In this way, the user can clearly hear the sound from the speaker structure regardless of the user's orientation relative to the smart robot, and the speaker structure is not limited in its range of interaction with the user due to sound directionality.

[0029] The present invention has been disclosed above based on the preferred embodiment described above, but the preferred embodiment described above is not intended to limit the present invention, and a person skilled in the art may make minor modifications and adaptations to the present invention without departing from the technical spirit and scope of the present invention, and therefore the scope of protection of the present invention is based on the scope of the appended claims. Any embodiment or claim of the present invention does not necessarily achieve all of the objectives, advantages or features disclosed in the present invention. In addition, the abstract and the title of the invention are only intended to aid in document search and are not intended to limit the technical scope of the present invention. Furthermore, the terms "first", "second", and the like used in the present specification or claims are only intended to name elements or distinguish other embodiments or scopes, and are not intended to limit the upper or lower limits on the number of elements. [Explanation of symbols]

[0030] 10: Smart robot 11: Shell 100:Speaker structure 110:First convex part 120:Second convex part 130: Plate 140: Speaker 150: Sound wave reflection cone 160:Speaker hole 170: Projection module 180: Cover part 190: Acoustically transparent fabric 200: Control module A1:Head A2: Cervical A3: Torso C1: Center of the diaphragm C2: Petrous apex D1, D2: Direction H1, H2, K1, K2, K3: Curve L1: Axis N1: First sound cavity N2: Second sound cavity N3: Space P1, P2: Standard R1: Annular region S1: Plane S2: Smooth surface t1: Thickness W1, W2: Screw

Claims

1. A speaker structure disposed in a shell, Includes a plate, a speaker and a sound reflector. the plate, the speaker and the sound reflector are assembled inside the shell; The speaker structure includes a plurality of speaker holes and a first protruding portion and a second protruding portion extending into the shell, The plurality of speaker holes are disposed on the shell around the axis and are located between the first protruding portion and the second protruding portion; The plate is assembled to the first protruding base portion, the speaker is assembled to the plate; The sound wave reflecting cone is disposed on the second convex portion, The sound wave reflection cone and the speaker are disposed along the axis and face each other; the speaker and the sound reflection cone are each symmetrical about the axis; The sound waves generated by the speaker are reflected by the sound wave reflection cone and then propagate to the outside of the shell through the plurality of speaker holes, the shell has an annular region surrounding the first protruding portion, the second protruding portion, the speaker, the plate, and the sound wave reflection cone, the plurality of speaker holes are located in the annular region; A speaker structure in which the on-axis orthogonal projection range of the multiple speaker holes is aligned with one side of the on-axis orthogonal projection range of the first convex base portion and one side of the on-axis orthogonal projection range of the second convex base portion.

2. 2. A speaker structure according to claim 1, the first protruding portion, the second protruding portion, the plate, the speaker and the sound wave reflecting cone form a first sound cavity of the speaker within the shell; The speaker structure, wherein the plurality of speaker holes are disposed surrounding the first sound cavity.

3. 2. A speaker structure according to claim 1, the first protruding portion and the plate form a plane; The flat surface faces the sound wave reflecting cone and the second convex portion, a speaker structure.

4. 2. A speaker structure according to claim 1, The second convex portion and the cone surface of the sound wave reflecting cone form a smooth surface, The smooth surface faces the plate and the first convex base portion, a speaker structure.

5. 2. A speaker structure according to claim 1, The direction in which the plate is assembled to the first protruding base portion is opposite to the direction in which the sound wave reflecting cone is assembled to the second protruding base portion; the first protruding portion and the plate form a plane; The second convex portion and the cone surface of the sound wave reflecting cone form a smooth surface, The flat surface and the smooth surface face each other, in a speaker structure.

6. 6. A speaker structure according to claim 5, the plate is locked to the first protruding portion by at least one screw; The sound wave reflecting cone is locked to the second protruding portion by at least one screw; the at least one screw that locks the plate does not lie in the plane; A speaker structure, wherein the at least one screw for locking the sound wave reflection cone is not located on the smooth surface.

7. 2. A speaker structure according to claim 1, the annular region is a metallic material having a thickness of 1 mm; A speaker structure, wherein the open area ratio of the plurality of speaker holes in the annular region is at least greater than 15%.

8. 2. A speaker structure according to claim 1, the annular region is a plastic material having a thickness of 2 mm; A speaker structure, wherein the open area ratio of the plurality of speaker holes in the annular region is at least greater than 20%.

9. 2. A speaker structure according to claim 1, further comprising an acoustically transparent fabric; The acoustically transparent fabric is disposed on an exterior of the shell and covers the speaker holes.

10. 2. A speaker structure according to claim 1, Further comprising a cover portion; the cover part is hermetically assembled to the plate and covers the speaker to form a second sound cavity of the speaker; A speaker structure, wherein the projection module and the sound wave reflection cone installed inside the shell are located on opposite sides of the plate, and the projection module is located outside the second sound cavity.

11. A smart robot including a speaker structure and a shell, the speaker structure is disposed on the shell and includes a plate, a speaker, and a sound reflecting cone; the plate, the speaker and the sound reflector are assembled inside the shell; The speaker structure includes a plurality of speaker holes and a first protruding portion and a second protruding portion extending into the shell, the plurality of speaker holes are disposed in the shell around the axis and are located between the first protruding portion and the second protruding portion; The plate is assembled to the first protruding base portion, the speaker is assembled to the plate; The sound wave reflecting cone is disposed on the second convex portion, The sound wave reflection cone and the speaker are disposed along the axis and face each other; the speaker and the sound reflection cone are each symmetrical about the axis; The sound waves generated by the speaker are reflected by the sound wave reflection cone and then propagate to the outside of the shell through the plurality of speaker holes, the shell has an annular region surrounding the first protruding portion, the second protruding portion, the speaker, the plate, and the sound wave reflection cone, the plurality of speaker holes are located in the annular region; A smart robot, wherein the on-axis orthogonal projection range of the multiple speaker holes is aligned with one side of the on-axis orthogonal projection range of the first convex base portion and one side of the on-axis orthogonal projection range of the second convex base portion.

12. 12. The smart robot of claim 11, the speaker, the plate, the sound-reflecting cone and a portion of the shell form a first sound cavity; The plurality of speaker holes are arranged surrounding the first sound cavity, the smart robot.

13. 12. The smart robot of claim 11, The shell is the head and neck of the smart robot, The smart robot, wherein the plurality of speaker holes are located in the neck of the smart robot.

14. 12. The smart robot of claim 11, the first protruding portion and the plate form a plane; The plane faces the sound wave reflecting cone and the second convex portion, the smart robot.

15. 12. The smart robot of claim 11, The second convex portion and the cone surface of the sound wave reflecting cone form a smooth surface, The smooth surface faces the plate and the first convex portion, the smart robot.

16. 12. The smart robot of claim 11, The direction in which the plate is assembled to the first protruding base portion is opposite to the direction in which the sound wave reflecting cone is assembled to the second protruding base portion; the first protruding portion and the plate form a plane; The second convex portion and the cone surface of the sound wave reflecting cone form a smooth surface, The plane surface and the smooth surface face each other, smart robot.

17. 17. The smart robot of claim 16, the plate is locked to the first protruding portion by at least one screw; The sound wave reflecting cone is locked to the second protruding portion by at least one screw; the at least one screw that locks the plate does not lie in the plane; A smart robot, wherein the at least one screw that locks the sound wave reflecting cone is not located on the smooth surface.

18. 12. The smart robot of claim 11, the annular region is a metallic material having a thickness of 1 mm; A smart robot, wherein the open area ratio of the plurality of speaker holes in the annular region is at least greater than 15%.

19. 12. The smart robot of claim 11, the annular region is a plastic material having a thickness of 2 mm; A smart robot, wherein the open area ratio of the plurality of speaker holes in the annular region is at least greater than 20%.

20. 12. The smart robot of claim 11, further comprising an acoustically transparent fabric; The acoustically transparent cloth is placed on the exterior of the shell and covers the speaker holes.

21. 12. The smart robot of claim 11, Further comprising a projection module and a cover part, the projection module is disposed inside the shell, the projection module and the sound reflection cone are located on opposite sides of the plate; The cover part is hermetically assembled to the plate and covers the speaker to form a second sound cavity of the speaker, the smart robot.

22. A speaker structure disposed in a shell, Includes a plate, a speaker and a sound reflector. the plate, the speaker and the sound reflector are assembled inside the shell; The speaker structure includes a plurality of speaker holes and a first protruding portion and a second protruding portion extending into the shell, The plurality of speaker holes are disposed on the shell around the axis and are located between the first protruding portion and the second protruding portion; The plate is assembled to the first protruding base portion, the speaker is assembled to the plate; The sound wave reflecting cone is disposed on the second convex portion, The sound wave reflection cone and the speaker are disposed along the axis and face each other; the speaker and the sound reflection cone are each symmetrical about the axis; The sound waves generated by the speaker are reflected by the sound wave reflection cone and then propagate to the outside of the shell through the plurality of speaker holes, The speaker structure comprises: Further comprising a cover portion; the cover part is hermetically assembled to the plate and covers the speaker to form a second sound cavity of the speaker; A speaker structure, wherein the projection module and the sound wave reflection cone installed inside the shell are located on opposite sides of the plate, and the projection module is located outside the second sound cavity.

23. A smart robot including a speaker structure and a shell, the speaker structure is disposed on the shell and includes a plate, a speaker, and a sound reflecting cone; the plate, the speaker and the sound reflector are assembled inside the shell; The speaker structure includes a plurality of speaker holes and a first protruding portion and a second protruding portion extending into the shell, the plurality of speaker holes are disposed in the shell around the axis and are located between the first protruding portion and the second protruding portion; The plate is assembled to the first protruding base portion, the speaker is assembled to the plate; The sound wave reflecting cone is disposed on the second convex portion, The sound wave reflection cone and the speaker are disposed along the axis and face each other; the speaker and the sound reflection cone are each symmetrical about the axis; The sound waves generated by the speaker are reflected by the sound wave reflection cone and then propagate to the outside of the shell through the plurality of speaker holes, The smart robot comprises: Further comprising a projection module and a cover part, the projection module is disposed inside the shell, the projection module and the sound reflection cone are located on opposite sides of the plate; The cover part is hermetically assembled to the plate and covers the speaker to form a second sound cavity of the speaker, the smart robot.

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