A ceramic speaker

Abstract

The present invention discloses a ceramic speaker, which includes a box body and a speaker. The box body includes a spherical cavity and a bottom cover. The bottom cover and the speaker are respectively installed at two ends of the cavity. The cavity is a ceramic cavity. A horizontal plane passing through the center of the sphere of the ceramic cavity divides the ceramic cavity into an upper cavity and a lower cavity. The area of the projection of the upper cavity on the vertical plane is larger than the area of the projection of the lower cavity on the vertical plane. By using a ceramic cavity to replace the traditional wooden or plastic sound cavity, the present invention will not cause audio loss, and has good responses to high, middle and low frequency sounds. The low frequency is thick and heavy, the middle frequency is melodious and pleasant, and the high frequency is clear and loud. At the same time, since the cavity in the ceramic mold is easy to process, speakers with different shapes can be manufactured, and the appearance is more beautiful.

Description

Technical Field

[0001] The present invention relates to the technical field of speakers, and particularly to a ceramic speaker. Background Art

[0002] A speaker is a device that can convert an audio signal into sound, and has gradually become an essential electronic product in people's lives. People's requirements for the performance of speakers are getting higher and higher, and at the same time, they also require the appearance of speakers to be diverse and artistic.

[0003] The material of the speaker and the control circuit are important factors determining the sound quality and functions. The control circuit generally includes a central processing unit, a power supply module, and other functional modules. Currently, most speakers are generally made of wood materials. Due to the hardness of the wood materials and the limitations of the processing methods, it is difficult to meet the theoretical design requirements of the speakers. Therefore, it is difficult to suppress and eliminate "standing sound waves", which easily leads to an increase in the distortion degree of the low-frequency band of the reproduced music. At the same time, the appearance of the manufactured speakers is relatively monotonous and not beautiful enough. However, by using ceramics as the sounding cavity, the effect achieved by the resonance of sound and ceramics cannot be achieved by traditional speakers made of wood or plastic under similar conditions. The resulting sound quality will be better. At the same time, its glaze surface is smooth, crystal clear, with a soft luster, warm and jade-like, and has a unique artistic beauty with a rich texture. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a ceramic speaker with a beautiful appearance, small occupied space, and better sound quality.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a ceramic speaker, including a box body and a speaker. The box body includes a spherical cavity and a bottom cover. The bottom cover and the speaker are respectively installed at both ends of the cavity. The cavity is a ceramic cavity. A horizontal plane passing through the center of the sphere of the ceramic cavity divides the ceramic cavity into an upper cavity and a lower cavity. The area of the projection of the upper cavity on the vertical plane is larger than the area of the projection of the lower cavity on the vertical plane.

[0006] Adopting the above solution, a ceramic cavity is manufactured according to the above proportional relationship, then the speaker is fixed in the ceramic cavity, and the ceramic cavity is covered by a top cover and a bottom cover, so that the ceramic cavity forms a chamber, and the speaker is controlled to play music. The ceramic cavity has no toughness compared with traditional wooden or plastic sound cavities, will not cause audio loss, and has a good response to high, medium, and low-frequency sounds. The low frequency is thick and heavy, the medium frequency is melodious and pleasant, and the high frequency is clear and loud. At the same time, since the cavity in the ceramic mold is easy to process, speakers with different shapes can be manufactured, and the appearance is more beautiful.

[0007] As a preferred solution, an upper opening is provided at the upper end of the upper cavity, and a lower opening is provided at the lower end of the lower cavity. The circular arc from the circular arc vertex of the inner wall of the ceramic cavity to the upper opening is called the upper circular arc, and the circular arc from the circular arc vertex of the inner wall of the ceramic cavity to the lower opening is called the lower circular arc. The ratio of the arc length of the upper circular arc to the arc length of the lower circular arc is 1.1 to 2:1.

[0008] As a preferred solution, the ratio of the arc length of the upper circular arc to the arc length of the lower circular arc is 1.2:1.

[0009] As a preferred solution, the diameter of the upper opening is smaller than the distance from the center of the sphere of the ceramic cavity to the inner wall of the ceramic cavity, and the diameter of the lower opening is smaller than the distance from the center of the sphere of the ceramic cavity to the inner wall of the ceramic cavity.

[0010] As a preferred solution, the ratio of the diameter of the upper opening to the diameter of the lower opening is 1:1.1 to 1.3.

[0011] As a preferred solution, the ratio of the diameter of the upper opening to the diameter of the lower opening is 1:1.1.

[0012] As a preferred solution, the speaker is fixedly connected to the upper opening.

[0013] As a preferred solution, the speaker includes a cover plate and a speaker body fixed on the cover plate. The surface of the cover plate is provided with mesh holes. The two side edges of the cover plate are provided with folded edges that bend downward. The folded edges are horizontally bent with contact edges. An installation position is formed between the contact edges and the folded edges. An installation portion matching the installation position is provided on the inner wall of the upper end of the ceramic cavity.

[0014] With the above solution, through the mutual cooperation of the installation portion located on the inner wall of the upper opening, the installation is more convenient and firm, and it can avoid the detachment of the cover plate during the use of the speaker. At the same time, the setting of the cover plate can effectively prevent external dust or impurities from entering the ceramic cavity, thereby affecting the sound quality of the speaker.

[0015] As a preferred solution, it further includes a circuit board and a battery located in the ceramic cavity. An installation post extending upward is provided on the inner surface of the bottom cover. A threaded hole is provided in the installation post. An installation hole matching the threaded hole is provided on the circuit board. The battery is electrically connected to the circuit board; a charging socket for charging the battery is provided on the circuit board, and a charging hole for the charging socket to extend out is provided on the bottom cover.

[0016] With the above solution, align the mounting holes on the circuit board with the threaded holes on the mounting posts, and then fix the circuit board on the inner surface of the bottom cover by passing screws through the mounting holes and the threaded holes respectively. This makes installation and disassembly convenient, avoids the circuit board falling off during use, and at the same time inserts the charging plug through the charging hole into the charging socket to charge the battery in a timely manner, ensuring the normal use of the speaker.

[0017] As a preferred solution, it further includes a support base connected to the box body. A circular groove is provided on the upper part of the support base, and the shape and size of the circular groove are consistent with those of the bottom cover.

[0018] With the above solution, it is convenient to fix the ceramic speaker, avoids damage to the ceramic cavity during use, and can effectively play a certain protective role.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: By fixing the speaker, circuit board and battery in the ceramic cavity, and covering the ceramic cavity with the top cover and the bottom cover, a chamber is formed in the ceramic cavity. The circuit board controls the speaker to play music. The ceramic cavity has no toughness compared with traditional wooden or plastic sound cavities, will not cause audio loss, and has a good response to high, middle and low frequency sounds. The low frequency is thick and heavy, the middle frequency is melodious and pleasant, and the high frequency is clear and loud. At the same time, since the cavity in the ceramic mold is easy to process, speakers with different shapes can be manufactured, and the appearance is more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the drawings and embodiments.

[0021] Figure 1 is a schematic diagram of the ceramic speaker of the present invention.

[0022] Figure 2 is a schematic diagram of the ceramic cavity in the ceramic speaker of the present invention.

[0023] Figure 3 is the front view of the ceramic cavity in the ceramic speaker of the present invention.

[0024] Figure 4 is a schematic internal view of the ceramic speaker of the present invention.

[0025] Figure 5 is Figure 4 a schematic diagram of the position A in

[0026] Figure 6 a schematic diagram of the bottom cover.

[0027] Figure 7 is a schematic diagram of Embodiment 4.

[0028] Figure 8 is a schematic diagram of the support base.

[0029] Figure 9 is the impedance curve of the speaker.

[0030] Figure 10 is the frequency response curve of the speaker on the baffle.

[0031] Figure 11 is the frequency response curve of the speaker on the ceramic speaker box.

[0032] 1 - ceramic cavity; 11 - upper opening; 12 - lower opening; 13 - center of the sphere; 14 - upper cavity; 15 - lower cavity; 16 - upper arc length; 17 - lower arc length; 2 - speaker; 21 - speaker body; 22 - cover plate; 221 - hem; 222 - contact edge; 3 - bottom cover; 31 - mounting post; 32 - threaded hole; 33 - charging hole; 4 - circuit board; 5 - battery; 6 - mounting part; 7 - support base; 71 - circular slot. Detailed implementation mode

[0033] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0034] In the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention; in addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] Embodiment 1

[0036] Please refer to Figure 1 and Figure 2, a ceramic speaker, comprising a box body, a speaker 2, a circuit board 4 and a battery 5. The box body includes a spherical cavity 1 and a bottom cover 3. The cavity is a ceramic cavity 1. The bottom cover 3 and the speaker 2 are respectively installed at both ends of the ceramic cavity 1. The speaker 2, the circuit board 4 and the battery 5 are all located inside the ceramic cavity 1. A horizontal cross-section passing through the center of the sphere of the ceramic cavity 1 divides the ceramic cavity 1 into an upper cavity 14 and a lower cavity 15. The area of the projection of the upper cavity on the vertical plane is larger than the area of the projection of the lower cavity on the vertical plane; an upper opening 11 is provided at the upper end of the upper cavity 14. The diameter of the upper opening 11 is smaller than the distance from the center of the sphere of the ceramic cavity 1 to the inner wall of the ceramic cavity 1. The diameter of the lower opening 12 is smaller than the distance from the center of the sphere of the ceramic cavity 1 to the inner wall of the ceramic cavity 1; the arc from the arc vertex of the inner wall of the ceramic cavity 1 to the upper opening 11 is called the upper arc 16, and the arc from the arc vertex of the inner wall of the ceramic cavity 1 to the lower opening 12 is called the lower arc 17. The above-mentioned arc vertex is the vertex of the arc formed when the vertical cross-section projection of the ceramic cavity 1 is projected onto a plane; the area of the projection of the above-mentioned upper cavity on the vertical plane refers to the area enclosed by the upper arc and the upper opening when the upper cavity is projected onto the vertical plane, and the area enclosed by the lower arc and the lower opening when the lower cavity is projected onto the vertical plane.

[0037] The speaker 2 and the bottom cover 3 are respectively installed at the upper opening 11 and the lower opening 12. The speaker 4 is fixed at the upper part of the upper cavity 14. The speaker 4 is electrically connected to the circuit board 4. The circuit board 4 is fixed on the inner surface of the bottom cover 3. The battery 5 is electrically connected to the circuit board 4. A charging socket (not shown) for charging the battery is provided on the circuit board 4. A charging hole 33 for the charging socket to extend out is provided on the bottom cover 3.

[0038] The structure in which the above-mentioned circuit board 4 is fixed on the bottom cover 3 is: an upward-extending mounting post 31 is provided on the inner surface of the bottom cover 3, and a threaded hole 32 is provided inside the mounting post 31. A mounting hole (not shown) matching the threaded hole 3 is provided on the circuit board 4.

[0039] The structure in which the above-mentioned speaker 2 is installed at the upper opening 11 is: the speaker 2 includes a cover plate 21. Mesh holes are provided on the surface of the cover plate 21. Folded edges 221 bent downward are provided on both sides of the cover plate 21. A contact edge 222 is horizontally bent on the folded edge 221. An installation position is formed between the contact edge 222 and the folded edge 221. An installation portion 6 matching the installation position is provided on the inner wall of the upper opening 11.

[0040] In this embodiment, the ratio of the arc length of the upper arc 16 to the arc length of the lower arc 17 is 1.5:1, and the ratio of the diameter of the upper opening 11 to the diameter of the lower opening 12 is 1:1.3.

[0041] A ceramic cavity is manufactured from ceramic raw materials according to the parameters that the arc length ratio of the upper arc to the lower arc is 1.5:1, and the diameter ratio of the upper opening to the lower opening is 1:1.3. Then, the speaker 4 is fixed to the upper opening 11 of the ceramic cavity 1, and the upper opening 11 is covered by the top cover 2. Then, the circuit board 4 is fixed to the bottom cover 3. After fixing the circuit board 4, the bottom cover 3 is installed at the lower opening 12 so that the ceramic cavity 1 forms a chamber, thus completing the assembly of the ceramic speaker. After assembling the ceramic speaker, the sound quality of the ceramic speaker is tested by professional instruments, and the test results are shown in Table 1.

[0042] Example 2

[0043] The difference between this example and Example 1 is that: the arc length ratio of the upper arc 16 to the lower arc 17 is 1.2:1, and the diameter ratio of the upper opening 11 to the lower opening 12 is 1:1.1.

[0044] A ceramic cavity 1 is manufactured from ceramic raw materials according to the parameters that the arc length ratio of the upper arc 16 to the lower arc 17 is 1.2:1, and the diameter ratio of the upper opening 11 to the lower opening 12 is 1:1.1. Then, the speaker 5 is fixed to the upper opening 11 of the ceramic cavity 1, and the upper opening 11 is covered by the top cover 2. Then, the circuit board 4 is fixed to the bottom cover 3. After fixing the circuit board 4, the bottom cover 3 is installed at the lower opening 12 so that the ceramic cavity 1 forms a closed chamber, thus completing the assembly of the ceramic speaker. After assembling the ceramic speaker, the sound quality of the ceramic speaker is tested by professional instruments, and the test results are shown in Table 1.

[0045] Example 3

[0046] The difference between this example and Example 1 is that: the arc length ratio of the upper arc 16 to the lower arc 17 is 1.3:1, and the diameter ratio of the upper opening 11 to the lower opening 12 is 1:1.2.

[0047] A ceramic cavity 1 is manufactured from ceramic raw materials according to the parameters that the arc length ratio of the upper arc 16 to the lower arc 17 is 1.3:1, and the diameter ratio of the upper opening 11 to the lower opening 12 is 1:1.2. Then, the speaker 4 is fixed to the upper opening 11 of the ceramic cavity 1, and the upper opening 11 is covered by the top cover 2. Then, the circuit board 4 is fixed to the bottom cover 3. After fixing the circuit board 4, the bottom cover 3 is installed at the lower opening 12 so that the ceramic cavity 2 forms a chamber, thus completing the assembly of the ceramic speaker. After assembling the ceramic speaker, the sound quality of the ceramic speaker is tested by professional instruments, and the test results are shown in Table 1.

[0048] Example 4

[0049] The difference between this embodiment and Embodiment 1 lies in that: it further includes a support base 8 connected to the box body. A circular slot 71 is provided on the upper part of the support base 7, and the shape and size of the circular slot 71 are consistent with those of the bottom cover 3. After the assembled ceramic speaker is turned on through the switch, the circuit board 4 controls the speaker 4 to play music. At this time, only by aligning the bottom cover 3 with the circular slot 81 can the ceramic speaker be fixed on the support base 7, preventing damage to the ceramic cavity 1 during use and effectively playing a certain protective role.

[0050] Comparative Example 1

[0051] The difference between Comparative Example 1 and Embodiment 1 lies in that: the ratio of the arc length of the upper arc 16 to the arc length of the lower arc 17 is 2.2:1, and the ratio of the diameter of the upper opening 11 to the diameter of the lower opening 12 is 1:1.4.

[0052] Comparative Example 2

[0053] The difference between Comparative Example 2 and Embodiment 1 lies in that: the ratio of the arc length of the upper arc 16 to the arc length of the lower arc 17 is 1:1, and the ratio of the diameter of the upper opening 11 to the diameter of the lower opening 12 is 1:1.

[0054] Comparative Example 3

[0055] The difference between Comparative Example 3 and Embodiment 1 lies in that: the ceramic cavity is replaced with a cavity made of ordinary plastic, and the cavity is manufactured according to the ratio of the arc length of the upper arc to the arc length of the lower arc of 1.2:1 and the ratio of the diameter of the upper opening to the diameter of the lower opening of 1:1.1. Then, the speaker, the circuit board, and the battery are installed in the cavity, and the cavity is covered by the top cover and the bottom cover to form a chamber.

[0056] Table 1 Test results of the embodiments and comparative examples:

[0057]

[0058] As can be seen from Table 1, the audio spans of Embodiments 1 to 3 are significantly better than those of Comparative Example 1 and Comparative Example 2, indicating that the ceramic cavity manufactured from the ceramic speaker of the present application according to the above parameters enables the speaker to have a wider audio range, without causing audio loss, thereby causing the ceramic cavity to resonate with the sound and resulting in better sound quality. By comparing Embodiments 1 to 3 with Comparative Example 3, it can be concluded that by using a cavity made of ceramic, the speaker can have a wider audio range, enabling the cavity to resonate with the sound better and having better sound quality. At the same time, the parameters of the ceramic cavity in Embodiment 2 are the best. Beyond this range, whether it is less than or greater than the range described in the embodiment, the sound quality does not reach the best.

[0059] By Figure 9It can be seen that when the speaker is not placed in the ceramic cavity, there is basically no low frequency.

[0060] From Figure 10 and Figure 11 It can be seen that when the speaker is placed in the ceramic cavity, compared with the test on the baffle, the mid-low frequency is significantly improved, with a wider audio range and no audio loss, thus causing the ceramic cavity to resonate with the sound and achieving a better sound quality effect.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0062] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A ceramic speaker, comprising a box body and a speaker, wherein the box body includes a spherical cavity and a bottom cover, and the bottom cover and the speaker are respectively installed at two ends of the cavity, and is characterized in that: The cavity is a ceramic cavity, which is the sound cavity of the speaker. The sound cavity is used to improve the sound quality of the speaker. The horizontal plane passing through the center of the sphere of the ceramic cavity divides the ceramic cavity into an upper cavity and a lower cavity. The area of the projection of the upper cavity on the vertical plane is larger than that of the lower cavity on the vertical plane. The upper end of the upper cavity is provided with an upper opening, and the lower end of the lower cavity is provided with a lower opening. The arc from the arc vertex of the inner wall of the ceramic cavity to the upper opening is called the upper arc, and the arc from the arc vertex of the inner wall of the ceramic cavity to the lower opening is called the lower arc. The ratio of the arc length of the upper arc to the arc length of the lower arc is 1.1-2:1; the diameter of the upper opening is smaller than the distance from the center of the sphere of the ceramic cavity to the inner wall of the ceramic cavity, and the diameter of the lower opening is smaller than the distance from the center of the sphere of the ceramic cavity to the inner wall of the ceramic cavity; the ratio of the diameter of the upper opening to the diameter of the lower opening is 1:1.1-1.

3.

2. The ceramic speaker according to claim 1, wherein: The ratio of the arc length of the upper arc to the arc length of the lower arc is 1.2:

1.

3. The ceramic speaker according to claim 1, characterized in that: The ratio of the diameter of the upper opening to the diameter of the lower opening is 1:1.

1.

4. The ceramic speaker according to claim 1, characterized in that: The speaker is fixedly connected to the upper opening.

5. The ceramic speaker according to claim 4, wherein: The speaker includes a cover plate and a speaker body fixed on the cover plate. The surface of the cover plate is provided with mesh holes. The two side edges of the cover plate are provided with folded edges bent downward. The folded edges are horizontally bent with contact edges. An installation position is formed between the contact edges and the folded edges. An installation part matching the installation position is provided on the inner wall of the upper end of the ceramic cavity.

6. The ceramic speaker according to claim 1, wherein: It further includes a circuit board and a battery located in the ceramic cavity. An installation post extending upward is provided on the inner surface of the bottom cover. A threaded hole is provided in the installation post. An installation hole matching the threaded hole is provided on the circuit board. The battery is electrically connected to the circuit board; a charging socket for charging the battery is provided on the circuit board, and a charging hole for the charging socket to extend out is provided on the bottom cover.

7. The ceramic speaker according to claim 1, wherein: It further includes a support seat connected to the box body. A circular groove is provided at the upper part of the support seat. The shape and size of the circular groove are consistent with those of the bottom cover.

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