Miniature annular transformer package for artificial cochlea implant

Abstract

The utility model provides a miniature toroidal transformer package for an artificial cochlea implant, which comprises a miniature toroidal transformer and a package structure, the package structure is coated outside the miniature toroidal transformer, the miniature toroidal transformer comprises a magnetic ring, and the magnetic ring is coated outside the miniature toroidal transformer. High-temperature-resistant enameled wire coils are uniformly wound on the outer side of the magnetic ring at equal intervals, and leads of the high-temperature-resistant enameled wire coils are welded in the welding holes. The miniature ring transformer packaging structure is simple and reasonable in structure and high in integrity, and meets the special requirements of packaging of an artificial cochlea implant device through the design of the packaging structure for the miniature ring transformer, the design of a matching structure of the miniature ring transformer on a circuit board and the design of a frame combination tool in the circulation process of production and assembly; convenience is provided for production and assembly of the artificial cochlea implant unit circuit board, and the quality and reliability of an artificial cochlea implant product are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic component packaging technology, and in particular, to the field of electronic component packaging technology for cochlear implant units; specifically, it relates to a miniature toroidal transformer package for cochlear implants. Background Technology

[0002] Electronic components are the building blocks of electronic parts and small machines and instruments, including resistors, capacitors, inductors, potentiometers, electronic transformers, integrated circuits, etc. The quality and reliability of these components are crucial to the performance of electronic products. Electronic component packaging is the process of assembling individual devices or integrated circuits into a final product.

[0003] Packaging encompasses the processes of installing, fixing, sealing, and wiring electronic components, as well as the structural forms and types of sealing, substrate and shell structures, and lead materials. The packaging structure of electronic components plays a crucial role in protecting the chip, enhancing electrothermal performance, and facilitating overall assembly. Currently, 90% of the electronic components in cochlear implant unit circuit boards use standard packaged devices. Standard packaged electronic devices facilitate the production and assembly of cochlear implant unit circuit boards, thereby ensuring product quality and reliability.

[0004] The toroidal transformer in the cochlear implant unit's circuit board is used for power conversion and signal transmission. However, due to the size limitations of the cochlear implant unit, this toroidal transformer is extremely small and requires high precision. It must be wound by hand using a microscope and soldered manually. Therefore, this miniature toroidal transformer differs from the specifications and models in the existing complete series of toroidal transformers, belonging to non-standard components without standard packaging. Currently, this miniature toroidal transformer in the cochlear implant unit is still in a simple, exposed form. The coil is wound on the magnetic ring without any encapsulation, and the coil is directly exposed to the air without a shell. Furthermore, because of its small size and the unsealed nature of the device, the enameled wire coil wound on the magnetic ring has a fine diameter, and the enamel layer is not protected and is relatively fragile. The soldered leads are suspended and cannot be fixed, which easily leads to poor connection. This will result in a certain rate of defective products during the subsequent production and assembly of the cochlear implant unit, adversely affecting product quality. Utility Model Content

[0005] Therefore, the purpose of this utility model is to develop a miniature toroidal transformer package for cochlear implants. By designing the packaging structure of the miniature toroidal transformer and its matching structure on the circuit board, as well as the frame assembly tooling design in the production and assembly process, this invention aims to meet the special requirements of cochlear implant device packaging, facilitate the production and assembly of cochlear implant unit circuit boards, and improve the quality and reliability of cochlear implant products.

[0006] This utility model provides a miniature toroidal transformer package for cochlear implants, comprising: a miniature toroidal transformer and a package structure, wherein the package structure covers the outside of the miniature toroidal transformer, the miniature toroidal transformer includes a magnetic ring, and high-temperature resistant enameled wire coils are uniformly wound around the outer side of the magnetic ring at equal intervals, and the leads of the high-temperature resistant enameled wire coils are welded in the welding holes.

[0007] Specifically, the magnetic ring is circular and used to wind the primary and secondary coils of high-temperature resistant enameled wire, forming the main body of the miniature toroidal transformer. The high-temperature resistant enameled wire is wound evenly on the magnetic ring at equal intervals and with consistent tension, ensuring that the tightness of each turn is uniform. The primary and secondary coils are soldered into solder holes inside the leads, ensuring a strong connection between the leads and the high-temperature resistant enameled wire.

[0008] Furthermore, the packaging structure includes: a plurality of symmetrically arranged plate-shaped pins, the plurality of pins being on the same plane, a soldering hole being provided on the side of the pins near the miniature toroidal transformer, the soldering hole being soldered to the leads of the miniature toroidal transformer and the pads of the circuit board, and the bottom of the pins being flat.

[0009] The symmetrical pins distribute the mass load of the miniature toroidal transformer package evenly on the circuit board, improving the uniformity of the stress on the circuit board; the multiple pins are on the same plane and have a flat bottom, making them easy to attach to the circuit board; the pins are designed in a sheet shape, which increases the contact area between the pins and the circuit board, resulting in a firm and reliable connection.

[0010] Furthermore, the encapsulation structure also includes an epoxy resin encapsulation layer, which is injection molded over the top surface of the miniature toroidal transformer. The epoxy resin encapsulation layer primarily forms the body of the miniature toroidal transformer encapsulation structure, protecting the internal components from external forces, providing insulation, waterproofing, heat dissipation, and ensuring good component density.

[0011] Furthermore, the bottom surface of the pin is coated with a pin tin plating layer.

[0012] The bottom surface of the pins is tin-plated, which allows the pins to better fuse with the solder paste during mounting, thereby ensuring a firm and reliable connection between the pins and the circuit board and meeting the requirements of mounting devices.

[0013] Furthermore, the upper surface of the miniature toroidal transformer package is provided with a specification marking layer.

[0014] The upper surface of the miniature toroidal transformer is marked with identification model, period code and polarity mark, which facilitates subsequent device identification and improves the overall production and assembly efficiency of cochlear implant.

[0015] Preferably, the specification marking layer is a laser marking layer. Laser marking is a non-contact process that produces almost no harmful substances. It is a marking method without tool wear and is non-toxic, reducing environmental pollution. It is adaptable to various materials, environmentally friendly and pollution-free, provides permanent marking and good anti-counterfeiting effects, and can achieve very high precision. Character sizes can range from millimeters to micrometers, making it suitable for applications requiring high-precision marking. Laser marking is fast, enabling the completion of a large number of marking tasks in a short time, thus improving production efficiency.

[0016] Furthermore, during the production and assembly process, the number of miniature toroidal transformer packages is multiple, and multiple miniature toroidal transformer packages are installed on a frame assembly tooling to form a miniature toroidal transformer package array. The edge of the frame assembly tooling is provided with rows of equally spaced transfer holes.

[0017] The frame assembly fixture is designed with transfer holes, which facilitates the use of hooks and other tools to pick up and transfer the frame assembly fixture and the devices embedded on it. This avoids direct hand contact with the devices, which could cause electrostatic discharge and damage to the devices, and brings great convenience to the overall production and assembly of cochlear implants.

[0018] An array of multiple miniature toroidal transformer packages is suitable for the mass production of cochlear implants, improving production and assembly efficiency.

[0019] Furthermore, the frame assembly fixture has square holes, and a frame is installed in each square hole. The edge of the frame matches and fits the square hole. A recessed annular support is provided at the bottom center of the frame. The miniature ring transformer is placed in the center of the annular support. The contact surface between the miniature ring transformer and the annular support is coated with a fixing adhesive layer.

[0020] Specifically, the frame is made of oxygen-free copper material. Through structural and shape design, it supports, positions, and limits the size of the miniature toroidal transformer body, so as to achieve good consistency in the product's appearance.

[0021] The recessed annular support plate serves to dissipate heat and shield the miniature toroidal transformer, preventing it from overheating and being affected by external interference during operation. The adhesive layer secures the bottom of the miniature toroidal transformer to the recessed annular platform, serving both positioning and heat conduction purposes.

[0022] Furthermore, the recessed annular support includes a sunken support strip, the upper end of which is orthogonally perpendicular to the bottom of the frame, and the lower end of which is connected to a planar ring, which is orthogonally perpendicular to the sunken support strip.

[0023] The planar ring and the sunken support bar form a cylindrical space to accommodate the miniature toroidal transformer package. This structural design can be fabricated using sheet metal, which reduces material consumption, simplifies the manufacturing process, and lowers production costs compared to the commonly used milling process.

[0024] Furthermore, a circuit board opening is provided in the middle of the multiple pads of the circuit board.

[0025] Due to the size limitations of miniature toroidal transformers used in cochlear implants, the packaging structure is designed as a sunken structure. The miniature toroidal transformer package has a "T" shape when viewed from the side and is sunken during application, with the bottom embedded in the circuit board opening.

[0026] Preferably, the pads of the circuit board mainly consist of a pad body and silkscreen markings, which facilitate the identification of components during production and assembly.

[0027] Furthermore, in the product packaging process of the miniature toroidal transformer package, the outer side of the miniature toroidal transformer package is wrapped with a carrier tape, which is wound in a reel.

[0028] Specifically, the miniature toroidal transformer is packaged using standardized packaging to meet the requirements of standardized equipment mounting. Standardized equipment mounting can significantly improve production efficiency and reduce manual operation time and errors. Through standardized mounting and quality inspection, stable and reliable product quality is ensured, production costs are reduced, and product competitiveness is enhanced.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] The miniature toroidal transformer packaging structure for cochlear implants provided by this utility model is simple and reasonable, with strong overall integrity. Through the design of the packaging structure for the miniature toroidal transformer and the matching structure of the miniature toroidal transformer on the circuit board, as well as the frame assembly tooling design in the production and assembly process, it meets the special requirements of cochlear implant device packaging, greatly facilitates the production and assembly of cochlear implant unit circuit boards, and effectively improves the quality and reliability of cochlear implant products. Attached Figure Description

[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0032] In the attached diagram:

[0033] Figure 1 This is a schematic diagram of the structure of the magnetic ring and high-temperature resistant enameled wire coil inside the miniature toroidal transformer according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the array arrangement structure of the frame on the frame assembly tooling and the installation of the miniature toroidal transformer in an embodiment of this utility model.

[0035] Figure 3 This is a partially enlarged view of the installation of the miniature toroidal transformer according to an embodiment of this utility model;

[0036] Figure 4 This is a schematic diagram of the array arrangement structure of the miniature toroidal transformer package on the frame assembly tooling according to an embodiment of the present invention;

[0037] Figure 5 This is a structural appearance diagram of the miniature toroidal transformer package according to an embodiment of this utility model;

[0038] Figure 6 This is a cross-sectional view of the micro toroidal transformer package according to an embodiment of the present invention;

[0039] Figure 7 This is a schematic diagram of the structure of the carrier tape for packaging the miniature toroidal transformer according to an embodiment of this utility model;

[0040] Figure 8 This is a schematic diagram of the structure of a reel used for winding carrier tape according to an embodiment of the present invention;

[0041] Figure 9 This is a schematic diagram of the solder pads of the circuit board according to an embodiment of the present invention;

[0042] Figure 10 This is a schematic diagram of the mounting structure of the miniature toroidal transformer packaged on a circuit board according to an embodiment of this utility model.

[0043] The markings in the attached figure are as follows:

[0044] 100. Frame; 1001. Circular support plate; 1002. Sunken support bar; 1003. Pin; 1004. Solder hole; 101. Magnetic ring; 102. High-temperature resistant enameled wire coil; 103. Fixing adhesive layer; 104. Epoxy resin encapsulation layer; 106. Pin tin plating layer; 107. Specification marking layer; 108. Circuit board; 109. Frame assembly fixture; 110. Transfer hole; 111. Circuit board opening; 112. Carrier tape; 113. Reel; 115. Solder pad. Detailed Implementation

[0045] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0046] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0047] It should be understood that although the terms first, second, and third may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0048] Example

[0049] This utility model embodiment provides a miniature toroidal transformer package for cochlear implants, such as... Figure 1 As shown, the miniature toroidal transformer includes a magnetic ring 101, around which high-temperature resistant enameled wire coils 102 are evenly wound at equal intervals, with each coil having the same tightness. The top surface of the miniature toroidal transformer is injection molded with an epoxy resin encapsulation layer 104 (e.g., ...). Figure 6 (As shown). The epoxy resin encapsulation layer is used to form the body of the miniature toroidal transformer encapsulation structure, protecting the internal components of the transformer from external forces.

[0050] During the production and assembly process, such as Figure 4 As shown, multiple miniature toroidal transformers can be packaged and mounted on a frame assembly fixture 109. The frame assembly fixture 109 has rows of equally spaced transfer holes 110 along its edges. The frame assembly fixture 109 and the devices mounted on it are transferred by hooking the transfer holes 110, preventing direct hand contact with the devices and potential damage from electrostatic discharge. The frame assembly fixture 109 has multiple arrayed square holes in its center, each containing a frame 100 made of oxygen-free copper material. (See [reference]). Figure 2 As shown, a miniature toroidal transformer packaging array is assembled, suitable for mass production of cochlear implants. The edge of the frame 100 matches and fits the square hole; four plate-shaped pins 1003 are symmetrically arranged around the periphery of the frame 100, increasing the contact area between the frame 100 and the frame assembly fixture 109, ensuring a firm and reliable connection. A recessed annular support plate 1001 is provided at the bottom center of the frame 100. The recessed annular support plate 1001 serves to dissipate heat and shield the miniature toroidal transformer, preventing overheating and external interference during operation; the recessed annular support plate 1001 includes a sunken support strip 1002, the upper end of which is orthogonally perpendicular to the bottom of the frame 100, and the lower end of which is connected to a planar ring, which is orthogonally perpendicular to the sunken support strip 1002. The planar ring and the sunken support strip 1002 constitute a cylindrical space for accommodating the miniature toroidal transformer package. Figure 2 , Figure 3 As shown, the miniature toroidal transformer is placed in the center of the annular support plate 1001, and a fixing adhesive layer 103 is applied to the mating surface of the miniature toroidal transformer and the annular support plate 1001. The fixing adhesive layer 103 fixes the bottom of the miniature toroidal transformer to the concave annular support plate 1001, and plays the role of positioning and heat conduction.

[0051] The miniature toroidal transformer package has a "T"-shaped structure when viewed from the side. When applied to cochlear implant unit products, the bottom of the miniature toroidal transformer package is connected to the circuit board 108 (e.g., Figure 10(As shown). The four pins 1003 are on the same plane, with flat bottoms for easy mounting on the circuit board 108. The four pins evenly distribute the mass load of the miniature toroidal transformer package onto the circuit board 108, ensuring uniform stress on the circuit board 108. The leads of the high-temperature enameled wire coil 102 are soldered into solder holes 1004, ensuring a strong and reliable connection between the pins 1003 and the high-temperature enameled wire. The bottom surface of the pins 1003 is plated with a pin tin plating layer 106. During mounting, the solder paste on the pins 1003 fuses with each other, ensuring a strong and reliable connection between the pins 1003 and the circuit board 108. Solder holes 1004 are provided on the side of the pins 1003 closest to the miniature toroidal transformer. Solder holes 1004 are soldered to the leads of the miniature toroidal transformer and the pads 115 of the circuit board 108. Circuit board openings 111 (e.g., ...) are provided in the middle of the multiple pads 115 of the circuit board 108. Figure 9 As shown, the miniature toroidal transformer package is recessed through the circuit board opening 111 to accommodate the specific limitations imposed by the size of the cochlear implant. In this embodiment, the pads 115 of the circuit board 108 consist of a pad body and silkscreen markings.

[0052] like Figure 5 As shown, the upper surface of the miniature toroidal transformer is provided with a specification marking layer 107, which includes identification of the model number, periodicity code, and polarity mark, facilitating subsequent device identification. In this embodiment, the specification marking layer 107 is a laser marking layer. Laser marking is a non-contact processing method, eliminating tool wear and toxicity. Furthermore, laser marking is fast, enabling the completion of a large number of marking tasks in a short time, thereby improving production efficiency.

[0053] like Figure 7 , 8 As shown, in the packaging process of the miniature toroidal transformer package, the outer packaging of the miniature toroidal transformer package is a carrier tape 112, which is wound in a reel 113. The use of these standardized packaging methods reduces the time and error of manual operation.

[0054] This embodiment effectively protects the enameled wire coil structure, physically protecting the miniature toroidal transformer from external influences and meeting the encapsulation requirements for miniature toroidal transformers. It also meets the standardized requirements for welding and packaging, enabling a complete industrialized production process for the encapsulation, assembly, and packaging of miniature toroidal transformers, thus improving product quality. The encapsulation structure of this miniature toroidal transformer prevents corrosion from airborne impurities, thus protecting the transformer surface and connecting leads. It protects the relatively delicate transformer from electrical and thermal damage and the influence of the external environment. Simultaneously, the encapsulation matches the thermal expansion coefficient of the transformer with that of the frame, mitigating stress caused by thermal changes in the external environment and stress generated by transformer heating, thereby preventing transformer damage and failure. Furthermore, the encapsulated miniature toroidal transformer is easier to install and transport.

[0055] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A miniature toroidal transformer package for cochlear implants, characterized in that, include: A miniature toroidal transformer and a packaging structure, wherein the packaging structure covers the outside of the miniature toroidal transformer, the miniature toroidal transformer includes a magnetic ring, and high-temperature resistant enameled wire coils are uniformly wound around the outside of the magnetic ring at equal intervals, and the leads of the high-temperature resistant enameled wire coils are soldered into solder holes.

2. The miniature toroidal transformer package for cochlear implants according to claim 1, characterized in that, The packaging structure includes: a plurality of symmetrically arranged plate-shaped pins, the plurality of pins being on the same plane, a soldering hole being provided on the side of the pins near the miniature toroidal transformer, the soldering hole being soldered to the leads of the miniature toroidal transformer and the pads of the circuit board, and the bottom of the pins being flat.

3. The miniature toroidal transformer package for cochlear implants according to claim 1, characterized in that, The encapsulation structure further includes an epoxy resin encapsulation layer, which is injection molded over the top surface of the miniature toroidal transformer.

4. The miniature toroidal transformer package for cochlear implants according to claim 2, characterized in that, The bottom surface of the pin is covered with a pin tin plating layer.

5. The miniature toroidal transformer package for cochlear implants according to claim 1, characterized in that, The upper surface of the miniature toroidal transformer package is provided with a specification marking layer.

6. The miniature toroidal transformer package for cochlear implants according to claim 1, characterized in that, During the production and assembly process, there are multiple miniature toroidal transformer packages. These multiple miniature toroidal transformer packages are installed on a frame assembly fixture to form a miniature toroidal transformer package array. The edge of the frame assembly fixture is provided with rows of equally spaced transfer holes.

7. The miniature toroidal transformer package for cochlear implants according to claim 6, characterized in that, The frame assembly fixture has square holes, and a frame is installed in each square hole. The edge of the frame matches and fits the square hole. A recessed annular support is provided at the bottom center of the frame. The miniature toroidal transformer is placed in the center of the annular support. The contact surface between the miniature toroidal transformer and the annular support is coated with a fixing adhesive layer.

8. The miniature toroidal transformer package for cochlear implants according to claim 7, characterized in that, The recessed annular support includes a sunken support strip, the upper end of which is perpendicular to the bottom of the frame, and the lower end of which is connected to a planar ring, which is perpendicular to the sunken support strip.

9. The miniature toroidal transformer package for cochlear implants according to claim 2, characterized in that, The circuit board has a circuit board opening in the middle of multiple pads.

10. The miniature toroidal transformer package for cochlear implants according to claim 1, characterized in that, In the product packaging process of the miniature toroidal transformer package, the outer side of the miniature toroidal transformer package is wrapped with a carrier tape, which is wound in a reel.

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