Plastic sound basin

Abstract

This utility model discloses a plastic speaker cone, relating to the field of loudspeaker technology. The key technical features are: a cone body made of plastic material, comprising a top and an end portion distributed vertically; an integrally formed folded edge connected to the top of the cone, the folded edge having a wavy cross-section; several reinforcing ribs on the back of the cone; and a damping ring fixedly connected to the back of the top portion. The reinforcing ribs improve the core rigidity of the cone, suppressing vibration energy while increasing the energy of the main segmented vibrations. The damping ring, located between the end of the reinforcing rib and the folded edge, efficiently absorbs and dissipates the vibration energy transmitted thereto. The wavy folded edge provides a long stroke and linear restoring force, absorbing residual energy from the cone and suppressing boundary reflections. The reinforcing ribs, damping ring, and folded edge constitute a three-stage vibration suppression system: core suppression, node absorption, and boundary dissipation. This effectively solves the problems of segmented vibration and residual vibration, resulting in better sound quality for the speaker cone.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and more specifically, to a plastic cone. Background Technology

[0002] With the popularization and development of automobiles, cars are playing an increasingly important role in our lives. People not only pay attention to the performance and appearance of cars, but also focus more on improving the driving experience. In these experiences, car audio plays an important role. Whether it is a long-distance trip or a daily commute, a high-quality car audio system can greatly enhance the driving experience and has become an indispensable part of modern cars.

[0003] The speaker cone is a crucial component of a car loudspeaker. Its main materials include pulp, plastic, and metal. It produces sound by pushing air through axial movement. The speaker cone mainly consists of the cone body and the flange. The conical cone shape expands the effective radiation area. The flange abuts against the speaker frame and can move axially, providing a linear restoring force opposite to the direction of movement, allowing it to return to its stationary position after the signal stops. However, plastic speaker cones exhibit segmented vibrations at certain frequencies, especially mid-to-high frequencies. This causes the restoring force of the cone to become non-linear, resulting in different movements in different parts of the cone, producing segmented vibrations, sound coloration, and affecting sound quality. Furthermore, due to the poor internal damping of plastic speaker cones, the cone may not stop vibrating quickly, resulting in muddy sound and unclear low frequencies.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a plastic cone in order to solve the above-mentioned problems.

[0006] The above-mentioned technical objective of this utility model embodiment is achieved through the following technical solution: a plastic cone, comprising a cone body made of plastic material, the cone body comprising a top and an end distributed vertically, the top of the cone body being connected to an integrally formed folded edge, the cross-section of the folded edge being wavy, the back of the cone body being provided with a plurality of reinforcing ribs, and a damping ring being fixedly connected to the back of the top.

[0007] The present invention is further configured such that: the folded edge includes a first connecting part, a first wave, a second wave and a second connecting part arranged in sequence, the first connecting part is fixedly connected to the top, and the second connecting part is used to abut against the basin stand.

[0008] The present invention is further configured such that the radius of curvature of the first wave is smaller than the radius of curvature of the second wave.

[0009] The present invention is further configured such that: the reinforcing ribs are distributed radially, the cross-section of the reinforcing ribs is arc-shaped, and the cross-sectional size of the reinforcing ribs decreases sequentially from the end to the top.

[0010] The present invention is further configured such that: the damping ring is located between the reinforcing rib and the first connecting part, and the damping ring is made of ethylene-vinyl acetate copolymer.

[0011] The present invention is further configured such that the damping ring is fixed to the basin body through a secondary injection molding process.

[0012] In summary, this utility model has the following beneficial effects:

[0013] By incorporating reinforcing ribs, damping rings, and wavy-shaped folded edges, the reinforcing ribs enhance the core rigidity of the cone, suppressing vibrational energy while increasing the energy of the main segmented vibrations. The damping rings are located between the ends of the reinforcing ribs and the folded edges. The damping rings have high internal damping characteristics, efficiently absorbing and dissipating the vibrational energy transmitted to them, while transferring unabsorbed vibrational energy to the folded edges. The wavy-shaped folded edges provide a long stroke and linear restoring force, absorbing the residual energy transmitted from the cone and suppressing boundary reflections. The reinforcing ribs, damping rings, and folded edges constitute a three-stage vibration suppression system: core suppression, node absorption, and boundary dissipation. This effectively solves the problems of segmented vibrations and residual vibrations, resulting in better sound quality for the cone. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a plastic cone according to the present invention. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the structure of a plastic cone according to the present invention. Figure 2 ;

[0016] Figure 3 This is a cross-sectional view of a plastic cone according to the present invention;

[0017] Figure 4 for Figure 3 A magnified view of A in the middle.

[0018] Reference numerals: 1. Basin; 101. Top; 102. End; 2. Folded edge; 201. First connecting part; 202. First wave; 203. Second wave; 204. Second connecting part; 3. Reinforcing rib; 4. Damping ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] In one possible embodiment, please refer to Figure 1 and Figure 2 As shown, a plastic cone includes a cone body 1 made of plastic material. The cone body 1 includes a top 101 and an end 102 distributed vertically. A number of reinforcing ribs 3 are provided on the back of the cone body 1. The reinforcing ribs 3 can increase the overall rigidity of the cone body 1. The reinforcing ribs 3 are radially distributed. The cross-section of the reinforcing ribs 3 is arc-shaped and the cross-sectional size of the reinforcing ribs 3 decreases sequentially from the end 102 to the top 101. As a result, the strength of the reinforcing ribs 3 gradually decreases from the end 102 to the top 101. This suppresses the vibration energy while increasing the main segmented vibration energy, causing the segmented vibration energy to move towards the side closer to the top.

[0021] For further details, please refer to Figure 3 and Figure 4 As shown, the top 101 of the cone 1 is connected to an integrally formed flange 2. The cross-section of the flange 2 is wavy. The flange 2 includes a first connecting part 201, a first wave 202, a second wave 203, and a second connecting part 204 arranged sequentially. The first connecting part 201 is fixedly connected to the top 101 of the cone 1. The second connecting part 204 is used to abut against the frame to realize the installation of the cone 1 and the frame. The double-wave flange 2 provides a long stroke and linear restoring force. At the same time, the radius of curvature of the first wave 202 is smaller than that of the second wave 203, thereby realizing a gradual change in mechanical impedance, smoothly guiding energy transfer and absorption, so that the low frequency extension of the cone is deeper and the distortion is smaller at high volumes. The vibration behavior of the entire cone 1 in all frequency bands is effectively controlled, and the frequency response curve is flatter and smoother.

[0022] For further details, please refer to Figure 1 and Figure 2As shown, a damping ring 4 is fixedly connected to the back of the top 101. The damping ring 4 is located between the reinforcing rib 3 and the first connecting part 201. The damping ring 4 is made of ethylene-vinyl acetate copolymer. Ethylene-vinyl acetate copolymer has high internal damping properties and can efficiently absorb vibration energy. At the same time, the damping ring 4 is fixed to the basin 1 through a secondary injection molding process. During casting, the basin 1 and the folded edge 2 are first cast through the first set of molds. The basin 1 and the folded edge 2 are made of polypropylene material, which is plastic. The cooled basin 1 and the folded edge 2 are removed and placed into the second set of molds. Ethylene-vinyl acetate copolymer is added, and the damping ring 4 is injection molded. Since the melting point of ethylene-vinyl acetate copolymer is lower than that of polypropylene, the damping ring 4 can be fixed to the basin 1 through the secondary injection molding method. The secondary injection molding method can ensure that the damping ring 4 is fully fixed to the basin 1.

[0023] For details, please refer to Figures 1-4 As shown, by setting the reinforcing rib 3, damping ring 4, and folded edge 2 with a wavy cross section, the reinforcing rib 3 can improve the core rigidity of the cone 1, suppress vibration energy, and increase the main segmented vibration energy. The damping ring is located between the end of the reinforcing rib 3 and the folded edge 2. The damping ring 4 has the characteristics of high internal damping, which can efficiently absorb and dissipate the vibration energy transmitted to it, and at the same time transfer the unabsorbed vibration energy to the folded edge 2. The wavy folded edge 2 can provide a long stroke and linear restoring force, absorb the residual energy transmitted from the cone 1 and suppress boundary reflection. The reinforcing rib 3, damping ring 4, and folded edge 2 constitute a three-level vibration suppression system of core suppression, node absorption, and boundary dissipation, which can effectively solve the problems of segmented vibration and residual vibration, so that the cone has better sound quality.

[0024] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A plastic cone, comprising a cone body (1) made of plastic material, characterized in that: The basin (1) includes a top (101) and an end (102) distributed vertically. The top (101) of the basin (1) is connected to an integrally formed folded edge (2). The cross section of the folded edge (2) is wavy. The back of the basin (1) is provided with several reinforcing ribs (3). The back of the top (101) is fixedly connected to a damping ring (4).

2. The plastic cone according to claim 1, characterized in that: The folded edge (2) includes a first connecting part (201), a first wave (202), a second wave (203) and a second connecting part (204) arranged in sequence. The first connecting part (201) is fixedly connected to the top (101), and the second connecting part (204) is used to abut against the basin stand.

3. A plastic cone according to claim 2, characterized in that: The radius of curvature of the first wave (202) is smaller than the radius of curvature of the second wave (203).

4. A plastic cone according to claim 1, characterized in that: The reinforcing ribs (3) are radially distributed, and the cross-section of the reinforcing ribs (3) is arc-shaped and the cross-sectional size of the reinforcing ribs (3) decreases sequentially from the end (102) to the top (101).

5. A plastic cone according to claim 2, characterized in that: The damping ring (4) is located between the reinforcing rib (3) and the first connecting part (201), and the damping ring (4) is made of ethylene-vinyl acetate copolymer.

6. A plastic cone according to claim 5, characterized in that: The damping ring (4) is fixed to the basin (1) by a secondary injection molding process.

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