Low-cost sound head pole plate
By using a combination of a plastic microphone electrode body and an electroplated metal coating, the problems of numerous manufacturing processes, high processing difficulty, and high cost of existing microphone electrode production have been solved, thus achieving low-cost microphone electrode production.
Patent Information
- Application Number
- CN202423069890.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-11
AI Technical Summary
The existing microphone plate manufacturing process involves many steps, is difficult to process, and has a long production cycle, resulting in high production costs.
The main body, made of plastic, is molded and formed, and a metal coating is formed on its surface by electroplating, forming a composite component that combines metal and non-metal.
This reduces processing difficulty, shortens the production cycle, and effectively reduces production costs.
Smart Images
Figure CN223681166U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to microphone field technology especially is low -cost sound head polar plate. BACKGROUND
[0002] The microphone is common sound receiving equipment, and its function is to convert sound signals into electric signals. The microphone is provided with a capacitor sound head. The capacitor sound head of the existing design is formed based on a structure composed of two parallel metal plates. A gap between the two metal plates forms a capacitor. One electrode of the capacitor sound head is composed of a fixed metal plate, which is generally called a polar plate. For a polarized sound head, it is generally called a back polar plate. The other electrode is composed of a very thin non-metal film surface coated with metal, which is also generally called a sound film or a vibrating film. When a user uses it, the airflow and sound energy formed by the peripheral sound source during transmission will act on the two electrodes. The electrode composed of a very thin non-metal film surface coated with metal will form displacement deformation. At the same time of displacement, the capacity of the capacitor between the two polar plates will change, thereby generating an electric signal output, thus completing the conversion of sound and electricity.
[0003] When the microphone is used, in order to obtain the desired effect, a hole or a groove is formed on the product parts during design, and sound-absorbing materials are added inside to obtain the desired signal and filter out or attenuate the unwanted signal. The sound head polar plate is an indispensable important component for picking up sound, especially the through holes arranged on the polar plate. The number, size and arrangement position of the through holes on the polar plate directly affect the frequency response characteristics and directivity of the microphone. However, the substrate of the large-diameter pure capacitor structure sound head is currently made of metal material. The metal is processed into a shape through a mechanical processing process. The process has many procedures, high processing difficulty, long production cycle, and high processing and production cost. Therefore, it is necessary to improve the existing polar plate. CONTENT OF THE UTILITY MODEL
[0004] Therefore, the utility model provides a low-cost sound head polar plate, which can effectively solve the problems of the existing sound head polar plate, such as many process procedures, high processing difficulty, long production cycle and high processing and production cost.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A low-cost sound head polar plate comprises a body and a metal plating layer. The body is made of plastic material. A central hole is formed in the center of the upper surface of the body. A plurality of groups of through holes are formed around the central hole. A first through hole is formed in the peripheral edge of the upper surface of the body. A fixing hole is formed in the peripheral side surface of the body. The metal plating layer is formed on the upper surface of the body by electroplating.
[0007] As a preferred solution, the plurality of groups of through holes are arranged circumferentially and spaced apart around the central hole.
[0008] As a preferred solution, an annular groove is formed on the upper surface of the body, the annular groove is located around the central hole and the plurality of groups of through holes, and the first through hole is located around the annular groove.
[0009] As a preferred solution, the inner distance of the annular groove gradually decreases from top to bottom.
[0010] As a preferred solution, each group of through holes is composed of a plurality of second through holes and a plurality of third through holes, and the plurality of second through holes and the plurality of third through holes are alternately and radially arranged.
[0011] As a preferred solution, the plurality of second through holes are all through holes, and the plurality of third through holes are all non-through holes.
[0012] As a preferred solution, the plurality of second through holes each include a first input section, a first contraction section and a first output section sequentially connected from top to bottom, and the plurality of third through holes each include a second input section and a second contraction section sequentially connected from top to bottom.
[0013] As a preferred solution, the first input section, the first output section and the second input section are all cylindrical.
[0014] As a preferred solution, the metal plating layer is a chrome plating layer, a nickel plating layer or other metal or other metal plating layer.
[0015] The utility model discloses a metal-plated through hole plate has the advantages of the prior art, and the specific speaking can know from the above technical scheme:
[0016] By selecting the body of plastic material, the mold can be directly pressed into shape, reducing the processing procedure and reducing the processing difficulty, shortening the production cycle, effectively reducing the production cost, and cooperating with the electroplating mode to form a metal plating layer on the upper surface of the body, so that a composite assembly combined with metal and non-metal is formed, which has the metal characteristics of the plate.
[0017] To make the structure characteristics and functions of the utility model clearer, the utility model will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 It is the three-dimensional schematic diagram of the preferred embodiment of the utility model;
[0019] Fig. 2 It is the front view of the preferred embodiment of the utility model;
[0020] Fig. 3 is a sectional view of a preferred embodiment of the present application.
[0021] Brief Description of the Drawings
[0022] 10, body 11, center hole
[0023] 12, groups of through holes 121, second through hole
[0024] 1211, first input section 1212, first contraction section
[0025] 1213, first output section 122, third through hole
[0026] 1221, second input section 1222, second contraction section
[0027] 13, first through hole 14, fixing hole
[0028] 15, annular groove 20, metal plating layer. DETAILED DESCRIPTION
[0029] Please refer to Figs. 1 to 3 , which shows the specific structure of a preferred embodiment of the present application, comprising a body 10 and a metal plating layer 20.
[0030] The body 10 is made of plastic, a center hole 11 is formed on the upper surface of the body 10, a plurality of groups of through holes 12 are formed around the center hole 11, a first through hole 13 is formed on the periphery of the upper surface of the body 10, and a fixing hole 14 is formed on the side surface of the body 10. In this embodiment, an annular groove 15 is formed on the upper surface of the body 10, the annular groove 15 is located outside the center hole 11 and the plurality of groups of through holes 12, the first through hole 13 is located outside the annular groove 15, and the inner distance of the annular groove 15 gradually decreases from top to bottom. In addition, the plurality of groups of through holes 12 are arranged circumferentially around the center hole 11, each group of through holes 12 is composed of a plurality of second through holes 121 and a plurality of third through holes 122, and the plurality of second through holes 121 and the plurality of third through holes 122 are radially alternately arranged. Specifically, the plurality of second through holes 121 are all through holes, the plurality of third through holes 122 are all non-through holes, the plurality of second through holes 121 each include a first input section 1211, a first contraction section 1212 and a first output section 1213 connected in sequence from top to bottom, and the plurality of third through holes 122 each include a second input section 1221 and a second contraction section 1222 connected in sequence from top to bottom, and the first input section 1211, the first output section 1213 and the second input section 1221 are all cylindrical.
[0031] The metal plating layer 20 is formed on the upper surface of the body 10 by electroplating; in this embodiment, the metal plating layer 20 is a chromium plating layer or a nickel plating layer.
[0032] The design focus of the utility model lies in: through selecting the body of plastic material, can use the mould direct compression molding, reduces the processing procedure and reduces the processing procedure difficulty, shortens the production cycle, effectively reduces the production cost, again cooperates the metal plating layer that is formed in the upper surface of the body in the way of electroplating, makes it form a kind of metal and non-metal combined composite component, possesses the metal characteristic of polar plate.
[0033] The above is only the preferred embodiment of the utility model, and does not limit the technical range of the utility model, so any slight modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiment still belong to the range of the technical scheme of the utility model.
Claims
1. A low cost phono cartridge pole piece characterized by: The utility model relates to a plastic body with a metal plating layer, a central hole is formed in the center of the upper surface of the body, a plurality of groups of through holes are formed around the central hole, a first through hole is formed in the periphery of the upper surface of the body, a fixing hole is formed in the lateral surface of the body, and the metal plating layer is formed on the upper surface of the body by electroplating.
2. The low cost audio head diaphragm of claim 1 wherein: The plurality of groups of through holes are circumferentially spaced around the central hole.
3. The low cost audio head diaphragm of claim 1 wherein: An annular groove is formed in the upper surface of the body, the annular groove is located outside the central hole and the plurality of groups of through holes, and the first through hole is located outside the annular groove.
4. The low cost audio head diaphragm of claim 3 wherein: The inner distance of the annular groove gradually decreases from top to bottom.
5. The low cost audio head diaphragm of claim 1 wherein: Each group of through holes is composed of a plurality of second through holes and a plurality of third through holes, and the plurality of second through holes and the plurality of third through holes are alternately and spacedly arranged radially.
6. The low cost audio head diaphragm of claim 5 wherein: The plurality of second through holes are through holes, and the plurality of third through holes are non-through holes.
7. The low cost audio head plate of claim 6, wherein: The plurality of second through holes each include a first input section, a first contraction section, and a first output section sequentially connected from top to bottom, and the plurality of third through holes each include a second input section and a second contraction section sequentially connected from top to bottom.
8. The low cost audio head plate of claim 7, wherein: The first input section, the first output section, and the second input section are in cylindrical shape.
9. The low cost audio head diaphragm of claim 1 wherein: The metal plating layer is a chromium plating layer or a nickel plating layer.