Integrated autotransformer for avionics equipment

Abstract

The invention belongs to the technical field of aviation electrical design, and discloses an integrated autotransformer for avionics equipment, the integrated autotransformer comprises an insertion finger support component, a framework coil component, an insertion finger cover plate component, a wiring board component and the like, and a mechanical interface can be mechanically connected with the outside only by using a milled insertion finger support as a base. The mounting gap between the upper magnetic core and the lower magnetic core is adjusted through the elastic pieces, so that the assembly efficiency is improved, and the disassembly and assembly process is simplified. In the aspect of electrical interfaces, external electrical cross-linking is realized by adopting a connector of the wiring board component, internal electrical cross-linking is performed by adopting a binding post of the wiring board component, the installation form is simple, and the installation and maintenance efficiency is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the field of aviation electrical design technology, and specifically relates to a design scheme of an integrated autotransformer for avionics equipment. As an integrated autotransformer, it is often used in voltage conversion airborne equipment in aviation electrical equipment, which facilitates the disassembly, assembly and maintenance of the product and improves safety and reliability. Background Art

[0002] In recent years, with the development of aviation power system technology, voltage conversion airborne equipment has been increasingly widely used. Voltage conversion equipment is a device that achieves voltage conversion by changing the voltage, and the internal core is the autotransformer. With the continuous development of the aviation industry, there are more and more aircraft models and more and more avionics equipment. Different models and different power equipment have different requirements for the installation, fixation and electrical connection of autotransformers. Autotransformers are usually installed on the outer casing of voltage equipment, but due to the different mechanical interfaces reserved for different equipment, mechanical and electrical disassembly and maintenance in narrow operating spaces and difficult-to-operate locations will increase the maintenance time of the equipment and affect the aesthetics. As the aviation industry market continues to grow, it will make airborne equipment lack a competitive advantage.

[0003] Based on this, there is an urgent need for an integrated autotransformer structure for avionics equipment to solve the above-mentioned problems. Summary of the invention

[0004] In order to overcome the problems of limited installation position and complex electrical interconnection, the present invention proposes an integrated autotransformer for avionics equipment, which can greatly improve the efficiency of disassembly and maintenance, and enhance safety and reliability.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An integrated autotransformer for avionics equipment, comprising:

[0007] A finger bracket component, which is provided with a plurality of finger brackets and mounting holes for external mechanical connection;

[0008] A skeleton wire package component, which is mounted on the finger bracket;

[0009] A finger inserting cover plate component, which is connected to the finger inserting bracket and is used to fix the skeleton wire package component;

[0010] The terminal block component is fixedly connected to the finger cover component and is provided with an integrated socket for external electrical cross-linking.

[0011] As a further technical solution of the present invention, the skeleton wire package component is welded to the terminal posts on the terminal board component to achieve internal electrical cross-linking, which includes a wire package and a magnetic core, and the wire package is installed on the magnetic core.

[0012] As a further technical solution of the present invention, the magnetic core includes upper and lower magnetic cores, which are locked by locking belts and locking screws. The wire package is installed on a winding frame, and the upper and lower magnetic cores are respectively plugged into both ends of the winding frame.

[0013] As a further technical solution of the present invention, a spring sheet is inserted into the installation gap between the magnetic core and the winding skeleton, and the spring sheet includes an upper spring sheet and a lower spring sheet.

[0014] As a further technical solution of the present invention, the upper and lower magnetic cores and the upper and lower spring sheets are all designed in an M-shaped structure.

[0015] As a further technical solution of the present invention, the finger cover component includes a finger cover and a mounting portion, the mounting portion is perpendicular to one side of the finger cover, the finger bracket is inlaid with a wire screw sleeve, and the mounting portion and the finger bracket are connected by a screw assembly and a wire screw sleeve.

[0016] As a further technical solution of the present invention, the finger inserting cover plate is provided with an elliptical hole feature with tolerance.

[0017] As a further technical solution of the present invention, the terminal block component is fixed to the finger cover plate by means of riveting pillars and is fixed by fasteners.

[0018] As a further technical solution of the present invention, the finger bracket component adopts an inverted M-shaped structure design, the finger bracket is provided with two parallel rows, and the magnetic core is placed between the two rows of finger brackets.

[0019] As a further technical solution of the present invention, the finger bracket component includes a mounting plate, and the mounting holes are evenly arranged on the mounting plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The complex combination of autotransformers is integrated into a replaceable form, which realizes the cross-linking with the outside, can greatly improve the efficiency of disassembly and maintenance, and improve safety and reliability.

[0022] 2. The mechanical interface is mechanically connected to the outside only through the milled finger bracket as the base, and the installation gap between the upper and lower magnetic cores is adjusted by the spring clip, which improves the assembly efficiency and simplifies the disassembly and assembly process.

[0023] 3. In terms of electrical interface, external electrical cross-linking is achieved through the connector of the terminal board component, and internal electrical cross-linking is achieved through the terminal posts of the terminal board component. It has a simple structure, high manufacturability, and is easy to disassemble, assemble and maintain the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an exploded schematic diagram of an integrated autotransformer for avionics equipment of the present invention;

[0025] Figure 2 It is a schematic diagram of assembling an integrated autotransformer for avionics equipment of the present invention;

[0026] Figure 3 It is a schematic diagram of the present invention before assembly in a voltage conversion device product;

[0027] Figure 4 This is a schematic diagram of the present invention after being assembled in a voltage conversion device product.

[0028] In the figure: 100, finger bracket component; 101, wire screw sleeve; 102, finger bracket, 200, skeleton wire package component; 201, lower spring piece; 202, lower magnetic core; 203, wire package, 204, winding skeleton, 205, locking belt, 206, upper spring piece, 207, upper magnetic core, 208, locking nut, 300, finger cover component, 301, finger cover, 302, riveting support, 303, screw assembly, 400, terminal board component, 401, terminal board, 402, socket, 403, fastener, 404, terminal. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-4 The present invention provides an integrated autotransformer for avionics equipment, which is used for voltage conversion electrical equipment, including a finger bracket 102 component 100, a skeleton wire package component 200, a finger cover component 300, a terminal board component 400, etc. The electrical connection can be externally electrically cross-linked through the socket 402 on the terminal board component 400, and the mechanical interface can only be fixed through the four through holes on the finger bracket 102 component 100 to achieve the fixation of the entire structure.

[0031] The finger bracket 102 component 100 adopts an inverted M-shaped structure design, which is provided with a plurality of finger brackets 102 and a mounting plate. The finger brackets 102 are provided with two parallel rows, the magnetic core is placed between the two rows of finger brackets 102, and the finger brackets 102 are inlaid with wire screw sleeves 101. The mounting plate is provided with evenly distributed mounting holes for external mechanical connection.

[0032] The skeleton wire package component 200 is mounted on the finger bracket 102; the skeleton wire package component 200 is welded with the terminal post 404 on the terminal board component 400400 to achieve internal electrical cross-linking, which includes a wire package 203 and a magnetic core, and the wire package 203 is mounted on the magnetic core.

[0033] The magnetic core includes upper and lower magnetic cores 207 and 202, which are made of stainless steel. The upper and lower magnetic cores 207 and 202 are locked by a locking belt 205 and a locking screw, and the locking belt 205 and the locking nut 208 are packaged and assembled using a predetermined torque and tooling. The wire package 203 is installed on the winding skeleton 204, and the upper and lower magnetic cores 207 and 202 are respectively plugged into the two ends of the winding skeleton 204. Shrapnel is inserted into the installation gap between the magnetic core and the winding skeleton 204. The shrapnel includes upper and lower shrapnel 206 and 201, which are used to fill the gap. The upper and lower magnetic cores 207 and 202 and the upper and lower shrapnel 206 and 201 are all designed with an M-shaped structure. The shrapnel is an elastic material with a thickness of 0.5 mm, which can ensure the locking of the magnetic core. The locking belt 205 is made of a steel belt to provide a locking force; the locking screw is a hexagon socket screw, which is used to resist the locking belt 205 to achieve locking of the locking belt 205.

[0034] The finger cover component 300 is connected to the finger bracket 102 and is used to fix the skeleton wire package component 200; the finger cover component 300 includes a finger cover 301 and a mounting portion, the mounting portion is perpendicular to one side of the finger cover 301, and the mounting portion and the finger bracket 102 are connected by a screw assembly 303 and a wire screw sleeve 101 to achieve the locking of the upper and lower magnetic cores 207 and 202. The finger cover 301 is provided with an elliptical hole feature of tolerance.

[0035] The terminal block component 400 is fixedly connected to the finger cover component 300, and includes a terminal block 401, on which an integrated socket 402 is provided for external electrical cross-linking. The terminal block component 400 is fixed to the finger cover 301 by a press-riveted support 302, and is fixed by a fastener 403. The press-riveted support 302 can prevent the risk of the press-riveted support 302 falling into the voltage conversion device during maintenance.

[0036] The packaged integrated autotransformer needs to be vacuum dipped in paint to remove the air gaps between the windings and complete the structural gap filling and curing.

[0037] So far, the purpose of the present invention has been achieved.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An integrated autotransformer for avionics equipment, characterized in that ,include: A finger bracket component, which is provided with a plurality of finger brackets and mounting holes for external mechanical connection; A skeleton wire package component, which is mounted on the finger bracket; A finger inserting cover plate component, which is connected to the finger inserting bracket and is used to fix the skeleton wire package component; The terminal block component is fixedly connected to the finger cover component and is provided with an integrated socket for external electrical cross-linking.

2. The integrated autotransformer for avionics equipment according to claim 1, characterized in that: The skeleton wire package component is welded with the terminal posts on the terminal board component to realize internal electrical cross-linking. The skeleton wire package component comprises a wire package and a magnetic core, and the wire package is installed on the magnetic core.

3. The integrated autotransformer for avionics equipment according to claim 2, characterized in that: The magnetic core comprises an upper magnetic core and a lower magnetic core, the upper magnetic core and the lower magnetic core are locked by a locking belt and a locking screw, the wire package is installed on a winding frame, and the upper magnetic core and the lower magnetic core are respectively plugged into two ends of the winding frame.

4. The integrated autotransformer for avionics equipment according to claim 3, characterized in that: A spring sheet is inserted into the installation gap between the magnetic core and the winding frame, and the spring sheet includes an upper spring sheet and a lower spring sheet.

5. The integrated autotransformer for avionics equipment according to claim 4, characterized in that: The upper and lower magnetic cores and the upper and lower spring sheets are all designed in an M-shaped structure.

6. The integrated autotransformer for avionics equipment according to claim 5, characterized in that: The finger inserting cover plate component comprises a finger inserting cover plate and a mounting portion, wherein the mounting portion is perpendicular to one side of the finger inserting cover plate, a wire screw sleeve is inlaid on the finger inserting bracket, and the mounting portion and the finger inserting bracket are connected through a screw assembly and a wire screw sleeve.

7. The integrated autotransformer for avionics equipment according to claim 6, characterized in that: The finger cover plate is provided with an elliptical hole feature with tolerance.

8. The integrated autotransformer for avionics equipment according to claim 7, characterized in that: The terminal block component is fixed on the finger cover plate by means of riveting pillars and is fixed by fasteners.

9. An integrated autotransformer for avionics equipment according to claims 2-8, characterized in that: The finger inserting bracket component adopts an inverted M-shaped structure design, the finger inserting bracket is provided with two parallel rows, and the magnetic core is placed between the two rows of finger inserting brackets.

10. The integrated autotransformer for avionics equipment according to claim 9, characterized in that: The finger bracket component includes a mounting plate, and the mounting holes are evenly arranged on the mounting plate.

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