Drum paper damper combined structure of ultrathin loudspeaker

Abstract

The invention relates to a cone paper damper combined structure of an ultrathin loudspeaker, and belongs to the technical field of cone paper. Comprising drum paper and a damper, the drum paper is composed of an annular folded edge, a conical part, a connecting part and a vibration part, the outer side wall of the annular folded edge is connected with the top of a disc frame, the two ends of the conical part are connected with the inner ring side wall of the annular folded edge and the connecting part respectively, and clamping tables are arranged at the inner end and the outer end of the connecting part respectively. The inner side clamping table of the connecting part is bonded to the outer side wall of the top of the voice coil, the outer side clamping table of the connecting part is bonded to the inner side wall of the damper, the outer side wall of the damper is connected with the disc frame, and the outer side wall of the vibration part is connected to the joint of the conical part and the annular folded edge. According to the invention, the problem that the sound quality damage cannot be avoided while the height of the existing woofer is reduced is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of drum paper, and in particular relates to a drum paper spring wave combination structure of an ultra-thin speaker. Background Art

[0002] Currently, various portable Bluetooth speakers, WIFI speakers, and smart speakers on the market all require products to reproduce perfect sound quality in a small size, which places high demands and restrictions on the timbre (low-frequency response) and height of the speakers installed in the speakers. Only by adopting the design of ultra-thin speakers and breaking through the height limit of speakers in product structure and connection process can we meet the sound quality requirements and integrate the trend of the times and the market for the use of portable devices.

[0003] However, such devices in the prior art mostly use traditional subwoofers, and the existing speakers generally adopt the following structure: the basin frame is a basin-like structure, the magnetic circuit is installed on the basin frame through a supporting structure, the voice coil is arranged on the outside of the magnetic circuit, the inner side of the drum paper is connected to the voice coil, and the outer side is connected to the basin frame; the elastic wave is arranged under the drum paper, the inner side is connected to the voice coil, and the outer side is connected to the basin frame.

[0004] The drum paper adopts a completely conical basin structure, and the drum paper taper of this type of speaker is generally controlled at ≤120 degrees. The smaller the taper value, the better the rigidity. The rigidity of the drum paper is an important indicator that determines the characteristics of the speaker. The smaller the taper value, the larger the corresponding height value. Therefore, there are defects such as too large volume and installation height, and a more complex structure of the elastic wave is required for support to keep the drum paper in the correct position during the movement. When the drum paper and the elastic wave are fixed, the inner diameter of the drum paper, the inner diameter of the elastic wave and the voice coil are glued together. If an ultra-thin speaker is to be made, the depth of the drum paper needs to be reduced and the shape needs to be flattened to meet the depth dimension requirements so as to avoid the speaker height being too high and interfering with the installation of the speaker structure. However, if the height of the speaker is reduced, the change in the taper of the drum paper will cause the drum paper to be insufficiently rigid, resulting in poor sound quality, and it will not be able to radiate a strong and powerful low-frequency output response while meeting the ultra-thin requirements. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a drum-paper-elastic wave combination structure of an ultra-thin speaker, which solves the problem that the existing bass speaker cannot avoid sound quality damage while reducing its height.

[0006] The objective of the present invention can be achieved through the following technical scheme: A drum-paper-sprung wave combination structure of an ultra-thin speaker, comprising a drum paper and a spring wave, wherein the drum paper is composed of an annular folded edge, a conical portion, a connecting portion and a vibrating portion, wherein the outer wall of the annular folded edge is connected to the top of a disc frame, and the two ends of the conical portion are respectively connected to the inner ring side wall of the annular folded edge and the connecting portion, and both inner and outer ends of the connecting portion are provided with a clamping platform, the inner clamping platform of the connecting portion is bonded to the outer wall of the top of the voice coil, the outer clamping platform of the connecting portion is bonded to the inner wall of the spring wave, the outer wall of the spring wave is connected to the disc frame, and the outer wall of the vibrating portion is connected to the connection between the conical portion and the annular folded edge.

[0007] As a preferred technical solution of the present invention, the middle portion of the connecting portion is composed of a plurality of reinforcing ribs, the plurality of reinforcing ribs are arranged in a circular array, and the two ends of the reinforcing ribs are respectively connected to the two clamping platforms.

[0008] As a preferred technical solution of the present invention, a connecting ring is provided in the middle of the connecting portion, and the connecting ring is connected to the middle parts of a plurality of reinforcing ribs.

[0009] As a preferred technical solution of the present invention, grooves are provided on the bottom surfaces of the connecting ring and the reinforcing ribs.

[0010] As a preferred technical solution of the present invention, the conical portion and the top surface of the connecting portion are provided with ribs, and the bottom surfaces of the ribs are respectively in contact with the inner surface of the conical portion and the top surface of the connecting portion.

[0011] As a preferred technical solution of the present invention, it also includes a clamping ring, the top surface of the clamping ring is provided with a step surface on one side close to the inner ring, the clamping ring is sleeved on the outer wall of the voice coil, the bottom surface of the inner clamping platform of the connecting part abuts against the step surface, and the clamping platform is bonded and consolidated with the clamping ring.

[0012] As a preferred technical solution of the present invention, the taper of the tapered portion is 101°.

[0013] As a preferred technical solution of the present invention, a wire is provided on the damper, and a avoidance groove is opened at the position of the connecting portion corresponding to the wire. One end of the wire is connected to the voice coil through the avoidance groove, and the other end is connected to the terminal on the disc frame.

[0014] The beneficial effects of the present invention are as follows: by converting a part of the tapered portion of the drum paper into a gentle arc while keeping the tapered portion of the drum paper unchanged, the height of the drum paper is reduced; at the same time, in order to ensure the rigidity of the drum paper, both the inner and outer rings of the connecting portion are provided with clamping platforms, which are used to connect with the voice coil and the spring wave, so that the spring wave and the drum paper do not need to be connected to the voice coil during connection, but the spring wave is connected to the corresponding position of the tapered portion, so that the vibration generated by the drum paper is directly transmitted to the spring wave, so that the spring wave can reduce the energy of the vibration transmitted to the frame while maintaining the sound transmission efficiency, thereby reducing the distortion of the sound, improving the timbre of the speaker, and solving the problem that the existing subwoofer cannot avoid sound quality damage while reducing the height. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the drum paper structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the connecting part of the present invention;

[0019] Figure 4 This is a test curve diagram of a traditional drum paper speaker of the present invention;

[0020] Figure 5 This is a test curve diagram of the drum paper speaker of the present invention;

[0021] Main component symbols

[0022] In the figure: 1, drum paper; 11, annular folded edge; 12, tapered portion; 13, connecting portion; 131, clamping platform; 132, reinforcing ribs; 133, connecting ring; 134, avoidance groove; 14, vibration portion; 15, groove; 16, rib plate; 2, elastic wave; 3, clamping ring; 4, wire. DETAILED DESCRIPTION

[0023] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0024] See also Figure 1-Figure 5The present embodiment provides a drum-paper-sprung wave combination structure of an ultra-thin speaker, comprising a drum paper 1 and a spring wave 2, wherein the drum paper 1 is composed of an annular folded edge 11, a conical portion 12, a connecting portion 13 and a vibrating portion 14, wherein the annular folded edge 11, the conical portion 12 and the connecting portion 13 are all annular structures, and the vibrating portion 14 is a circular structure, the outer wall of the annular folded edge 11 is connected to the top of the disc frame, the two ends of the conical portion 12 are respectively connected to the inner ring side wall of the annular folded edge 11 and the outer ring of the connecting portion 13, and the inner and outer ends of the connecting portion 13 are provided with a clamping platform 131, the connecting portion 13 is bonded to the outer wall of the top of the voice coil through the inner clamping platform 131, and the outer clamping platform 131 of the connecting portion 13 is bonded to the inner ring side wall of the spring wave 2, the outer wall of the spring wave 2 is connected to the disc frame, and the outer wall of the vibrating portion 14 is connected to the connection between the conical portion 12 and the annular folded edge 11.

[0025] As the current electronic products have a trend of miniaturization and thinning, the electroacoustic devices used in electronic products, such as speakers, also have a need for thinning. This places high demands and restrictions on the timbre (low-frequency response) and height of the speakers installed in the sound box. In order to ensure the timbre of the speaker, the drum paper 1 in the current subwoofer needs to control the taper to ≤120 degrees, and the smaller the taper of the speaker, the better the rigidity. The rigidity of the drum paper 1 is an important indicator that determines the characteristics of the speaker, but the smaller the taper value, the larger the corresponding height value. Therefore, if the current ultra-thin speaker is to meet the installation height requirements, it is necessary to increase the taper of the drum paper 1, which affects the timbre of the speaker, and in order to maintain the timbre of the speaker, the installation height of the drum paper 1 cannot be reduced. Therefore, in order to solve this problem.

[0026] In the present invention, the drum paper 1 can be basically divided into two parts, wherein the annular folded edge 11 and the vibration part 14 are the same as the original drum paper 1, and the conical part 12 is composed of the conical part 12 and the connecting part 13 in the present invention. By converting a part of the conical part 12 into a gentle arc while keeping the conicity of the conical part 12 of the drum paper 1 unchanged, the height of the drum paper 1 is reduced. At the same time, in order to ensure the rigidity of the drum paper 1, the inner and outer rings of the connecting part 13 are provided with clamping platforms 131, and the two clamping platforms 131 are used to connect with the voice coil and the damper 2, so that the damper 2 and the drum paper 1 do not need to be connected to the voice coil when they are connected, but the damper 2 is connected to the corresponding position of the conical part 12. In this way, when the drum paper 1 is driven by an electrical signal, its surface vibrates, and this vibration causes the movement of the surrounding air molecules to form sound waves. At this time, the vibration generated by the drum paper 1 will be directly transmitted to the spring wave 2, so that the spring wave 2 can reduce the energy of vibration transmitted to the frame while maintaining the sound transmission efficiency, thereby reducing sound distortion and improving the timbre of the speaker.

[0027] At the same time, in order to ensure that the drum paper 1 of the present invention can produce the same timbre as the existing drum paper 1 after changing its structure, refer to Figure 4-Figure 5 As can be seen from the attached drawings, the frequency response curve of the drum paper 1 of the present invention has obvious peaks and valleys and abnormal distortion starting from 300Hz. However, since the effective frequency range of the subwoofer is 20-200Hz, the problems above 200Hz can be ignored. Therefore, the drum paper 1 in the present invention reduces the installation height while ensuring that the sound quality produced by the drum paper 1 is consistent with the existing ones.

[0028] In order to ensure the rigidity of the drum paper 1 and avoid the sound of the drum paper 1 being affected when the installation height of the drum paper 1 is reduced, in this embodiment, the middle part of the connecting portion 13 is composed of a plurality of reinforcing ribs 132, and the plurality of reinforcing ribs 132 are arranged in a circular array. The two ends of the reinforcing ribs 132 are respectively connected to the two clamping platforms 131. The connecting portion 13 is formed by forming a circular array with the plurality of reinforcing ribs 132, so that the reinforcing ribs 132 can evenly distribute the force, so that the drum paper 1 maintains good shape stability when vibrating, thereby improving the stability and rigidity of the connecting portion 13 when connected to the tapered portion 12, ensuring its structural stability during use, and reducing the sound deterioration caused by the reduction of the installation height of the drum paper 1.

[0029] Since the connection part 13 is composed of a plurality of reinforcing ribs 132, there will be a gap between two adjacent reinforcing ribs 132. Therefore, in order to reduce the vibration of the drum paper 1 during the vibration process, the connection part 13 can form a whole to transmit the vibration, and avoid the vibration frequencies of the reinforcing ribs 132 being inconsistent when being vibrated, thereby generating noise that affects the sound quality of the speaker, in one embodiment, a connecting ring 133 is provided in the middle of the connection part 13, and the connecting ring 133 is connected to the middle of several reinforcing ribs 132. By connecting the connecting ring 133 to the middle of several reinforcing ribs 132, the adjacent reinforcing ribs 132 can be integrated together, so that they form a whole when being vibrated, thereby improving the transmission efficiency of the vibration. In this way, when the drum paper 1 vibrates, the existence of the connecting ring 133 allows the vibrations of the various reinforcing ribs 132 to remain synchronized, avoiding the mutual interference of vibrations of different frequencies and reducing the generation of noise.

[0030] In order to reduce the production cost of the drum paper 1 while improving the rigidity of the drum paper 1, in one embodiment, the bottom surfaces of the connecting ring 133 and the reinforcing rib 132 are provided with grooves 15. By providing the grooves 15 on the bottom surfaces of the connecting ring 133 and the reinforcing rib 132, the use of materials can be optimized and the consumption of raw materials can be reduced. Moreover, the design of the grooves 15 not only reduces the amount of material used, but also forms a reinforcing structure. The shape and layout of the groove 15 area can provide additional rigidity improvement, especially in the case of bending and twisting of the bottom surface. By reasonably designing the depth and shape of the grooves 15, the ability of the drum paper 1 to resist deformation in the working state can be improved, making it more stable. At the same time, the design of the grooves 15 can reduce the weight of the overall structure, so that the drum paper 1 can be lighter while maintaining the corresponding rigidity. This helps to improve the response speed of the speaker and improve its frequency response performance.

[0031] Although the rigidity of the conical portion 12 is improved by the setting of the connecting portion 13, the rigidity of the conical portion 12 itself is determined by its own taper. In order to improve the rigidity of the drum paper 1 without changing the taper of the drum paper 1, in one embodiment, the conical portion 12 and the top surface of the connecting portion 13 are provided with ribs 16, and the bottom surface of the ribs 16 is respectively fitted with the inner surface of the conical portion 12 and the top surface of the connecting portion 13. By fitting the ribs 16 with the inner surface of the conical portion 12 and the top surface of the connecting portion 13, it can be ensured that the geometric shape and taper of the conical portion 12 do not change. This design can enhance the structural strength of the conical portion 12 without affecting the sound wave propagation characteristics of the conical portion 12. Such a design can not only improve the clarity and sound quality of the sound, but also enhance the stability and durability of the overall structure.

[0032] In order to make the drum paper 1 more stable when connected to the voice coil, in one embodiment, it also includes a clamping ring 3, and a step surface is provided on the top surface of the clamping ring 3 close to the inner ring. The clamping ring 3 is sleeved on the outer wall of the voice coil, and the bottom surface of the inner clamping platform 131 of the connecting part 13 abuts against the step surface. The clamping platform 131 and the clamping ring 3 are bonded and consolidated. The clamping ring 3 can provide a more stable connection point. After the bottom surface of the inner clamping platform 131 of the connecting part 13 abuts against the step surface, a mechanical locking effect is formed, which makes the connection between the drum paper 1 and the voice coil more stable and reduces the looseness caused by vibration. Therefore, the connection stability between the drum paper 1 and the voice coil is significantly enhanced without increasing the complexity, and the sound quality of the speaker is avoided due to the loose connection position of the drum paper 1 during vibration.

[0033] Since the original conical portion 12 is divided into two parts, the height of the speaker can be greatly reduced. Since the smaller the taper of the drum paper 1, the better the tone of the speaker, in order to improve the sound quality of the speaker, in one embodiment, the taper of the conical portion 12 is 101°. The taper of the drum paper 1 of the existing woofer is usually controlled at ≤120 degrees. In order to improve the rigidity of the drum paper 1, the taper of the conical portion 12 is set to 101°, which is generally considered to be a relatively small taper in the audio field. The small taper design can improve the directivity and high-frequency response of the speaker, thereby improving the overall sound quality. The smaller taper can better control the radiation of sound waves, making the tone clearer and richer, and enhancing the harmony of low and high frequencies. Compared with the common taper, the design with a taper of 101° can promote more uniform sound wave radiation and reduce phase distortion caused by the shape change of the tapered portion 12.

[0034] In order to ensure the effective transmission of electrical signals so that the voice coil can accurately respond to the input signal, in one embodiment, a wire 4 is provided on the damper 2, and a avoidance groove 134 is provided at the position of the connection portion 13 corresponding to the wire 4. One end of the wire 4 is connected to the voice coil through the avoidance groove 134, and the other end is connected to the terminal on the disc frame. In the speaker, the wire 4 plays a vital role. It is not only a transmission channel for electrical signals, but also affects the quality of sound, the performance of the speaker and the overall effect of the system. Therefore, the audio signal is transmitted from the audio amplifier or the sound source to the voice coil of the speaker through the wire 4, and the voice coil electrical signal is converted into mechanical vibration, which drives the diaphragm to vibrate and generate sound waves, ensuring that the sound is clearer and more dynamic. In addition, the setting of the avoidance groove 134 helps to reduce the influence of electromagnetic interference (EMI) of the wire 4 and other external noise on the audio signal. This can help improve the sound quality and reduce background noise and distortion.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A drum-paper-spring wave combination structure of an ultra-thin speaker, characterized in that: The invention comprises a drum paper and a spring wave, wherein the drum paper is composed of an annular folded edge, a conical portion, a connecting portion and a vibrating portion, the outer wall of the annular folded edge is connected to the top of the disc frame, the two ends of the conical portion are respectively connected to the inner ring side wall of the annular folded edge and the connecting portion, the inner and outer ends of the connecting portion are provided with a clamping platform, the inner clamping platform of the connecting portion is bonded to the outer wall of the top of the voice coil, the outer clamping platform of the connecting portion is bonded to the inner wall of the spring wave, the outer wall of the spring wave is connected to the disc frame, and the outer wall of the vibrating portion is connected to the connection between the conical portion and the annular folded edge.

2. The drum-paper-spring wave combination structure of an ultra-thin speaker according to claim 1, characterized in that: The middle part of the connection part is composed of a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged in a circular array, and the two ends of the reinforcing ribs are respectively connected to the two clamping platforms.

3. The drum-paper-spring wave combination structure of an ultra-thin speaker according to claim 2, characterized in that: A connecting ring is provided in the middle of the connecting part, and the connecting ring is connected to the middle parts of a plurality of reinforcing ribs.

4. The drum-paper-spring wave combination structure of an ultra-thin speaker according to claim 3, characterized in that: The bottom surfaces of the connecting ring and the reinforcing ribs are both provided with grooves.

5. The drum-paper-spring wave combination structure of an ultra-thin speaker according to claim 3, characterized in that: The conical portion and the top surface of the connecting portion are provided with ribs, and the bottom surfaces of the ribs are respectively in contact with the inner side surface of the conical portion and the top surface of the connecting portion.

6. The drum-paper-spring wave combination structure of an ultra-thin speaker according to claim 2, characterized in that: It also includes a clamping ring, a top surface of which is provided with a step surface on one side close to the inner ring, the clamping ring is sleeved on the outer wall of the voice coil, the bottom surface of the inner clamping platform of the connecting part abuts against the step surface, and the clamping platform is bonded and consolidated with the clamping ring.

7. The drum-paper-spring wave combination structure of an ultra-thin speaker according to claim 1, characterized in that: The tapering angle of the tapered portion is 101°.

8. The drum-paper-spring wave combination structure of an ultra-thin speaker according to claim 1, characterized in that In: The wave damper is provided with a conducting wire, and the connecting portion is provided with an avoidance groove at a position corresponding to the conducting wire. One end of the wire is connected to the voice coil through the avoidance groove, and the other end is connected to the terminal on the disc frame.

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