Icing detection control box structure

Abstract

The invention belongs to the technical field of ice prevention and removal, and relates to an icing detection control box structure, which comprises an electric connector, a front panel, a filter circuit board, a power supply circuit board, a signal circuit board, an outer cover and a base, the electric connector is fixed on the front panel; the filter circuit board is fixed on a boss on the inner surface of the front panel; a contact pin of the electric connector is welded on the filter circuit board for signal transmission; the power supply circuit board is fixed on the base through a short strut and a long strut; the signal circuit board is fixed at the end of the long strut; the filter circuit board is connected with the power supply circuit board through the 90-degree inter-board connector; the power supply circuit board is connected with the signal circuit board through the 180-degree inter-board connector; and the outer cover, the front panel and the base form a closed cavity.

Description

Technical Field

[0001] This invention belongs to the field of anti-icing and de-icing technology, and relates to an ice detection and control box structure. Background Technology

[0002] The icing detection control box is an accessory product of the aircraft anti-icing and de-icing system. Its main responsibility is to provide power to the icing detector, calculate the collected icing information, and provide it to the aircraft. In terms of structural layout, the internal electrical connectors and circuit boards of traditional icing detection control boxes are connected by flying wires. The wiring layout is often messy and difficult to fix. In some products, the wires have even loosened under stress during mechanical environment testing. Summary of the Invention

[0003] The purpose of this invention is to provide a structure for an icing detection control box. The installation and arrangement of its internal connectors and circuit boards are optimized, eliminating the need for internal flying wires. The electrical connectors are fixed to the circuit boards by soldering with solder pins and fastening with standard parts. The circuit boards are fixed to each other by 90° or 180° inter-board connectors, supports, fasteners, and other parts. These measures ensure that no flying wires are required inside the icing detection control box, resulting in a simple structure, reasonable layout, convenient assembly, and improved vibration resistance.

[0004] The technical solution of this invention: An icing detection control box structure includes: an electrical connector, a front panel, a filter circuit board, a power circuit board, a signal circuit board, an outer cover, and a base; The electrical connector is fixed to the front panel; The filter circuit board is fixed to the protrusion on the inner surface of the front panel; the pins of the electrical connector are soldered to the filter circuit board for signal transmission. The power circuit board is fixed to the base by short and long support pillars; The signal circuit board is fixed to the end of the long support column; The filter circuit board is connected to the power supply circuit board via a 90° inter-board connector. The power supply circuit board is connected to the signal circuit board via a 180° inter-board connector; The outer cover, front panel, and base form a closed cavity.

[0005] Furthermore, the front panel has one large Ф26mm round hole and four small Ф3.2mm round holes in the center for fixing the electrical connector, four cylindrical bosses inside for fixing the filter circuit board, and four square bosses at the bottom for fixing to the base; there are grooves on the sides for placing the sealing ring.

[0006] Furthermore, the base has a symmetrical structure with mounting lugs on the outer side for fixing the product; threaded holes and bosses are provided inside for fixing the front panel, short support, and outer cover; the inner boss has a groove on the side for placing the sealing ring.

[0007] Furthermore, the long and short pillars have the same structure but different lengths. One end is externally threaded, and the other end is a cylindrical structure combining hexagonal and cylindrical shapes with internal threads inside. The power circuit board, signal circuit board, and base are fastened together through the internal and external threads.

[0008] Furthermore, the electrical connector is secured to the front panel using M3 lead-sealed screws, spring washers, flat washers, and nuts.

[0009] Furthermore, the filter circuit board is fixed to the internal boss of the front panel by M3 cylindrical head screws, spring washers, and flat washers.

[0010] Furthermore, the signal circuit board is fixed to the long support using M3 cylindrical head screws, spring washers, and flat washers.

[0011] Furthermore, the front panel is secured to the base using M4 countersunk screws.

[0012] Furthermore, the outer cover is fixed to the base with M4 cylindrical head screws.

[0013] Furthermore, there are sealing rings between the outer cover and the front panel and base for sealing.

[0014] Advantages of this invention: Compared to traditional icing detection and control boxes, this invention features a redesigned layout and structure. It eliminates the need for internal flying wires, simplifying assembly. The filtering, power supply, and signal processing circuits are arranged on three different circuit boards according to their functions. Following a modular design concept, this effectively improves product reliability, reduces circuit board complexity, and enhances product maintainability. Attached Figure Description

[0015] Figure 1 This is a front sectional view of the icing detection control box of the present invention; Figure 2 This is a three-dimensional diagram of the icing detection and control box of the present invention; Figure 3 This is a three-dimensional view showing the front panel of the present invention; Figure 4 This is a three-dimensional view showing the base of the present invention; Figure 5 This is a three-dimensional view showing the outer casing of the present invention; Figure 6 This is a three-dimensional view showing the short and long pillars of the present invention. Detailed Implementation

[0016] The specific implementation of the present invention will be further described below with reference to the accompanying drawings.

[0017] An icing detection control box structure includes an electrical connector 1, a front panel 2, a filter circuit board 3, a long support column 4, a short support column 5, a power circuit board 6, a signal circuit board 7, a sealing ring 8, an outer cover 9, and a base 10. Electrical connector 1 is fixed to the front panel 2 using M3 lead-sealed screws, spring washers, flat washers, and nuts; filter circuit board 3 is fixed to the internal boss of the front panel 2 using M3 cylindrical head screws, spring washers, and flat washers; power circuit board 6 is fixed to the base 10 using short support 5 and long support 4; signal circuit board 7 is fixed to the long support 4 using M3 cylindrical head screws, spring washers, and flat washers; the pins of electrical connector 1 are soldered to the filter circuit board 3 for signal transmission; the filter circuit board 3 and power circuit board 6 transmit signals through a 90° inter-board connector; the power circuit board 6 and signal circuit board 7 transmit signals through a 180° inter-board connector; the front panel 2 is fixed to the base 10 using M4 countersunk screws; the outer cover 9 is fixed to the base 10 using M4 cylindrical head screws; a sealing ring 8 seals the outer cover 9 with the front panel 2 and the base 10.

[0018] The front panel 2 has one large Ф26mm round hole and four small Ф3.2mm round holes in the center for fixing the electrical connector 1. The four cylindrical bosses inside are used to fix the filter circuit board 3, and the four square bosses at the bottom are used to fix it to the base 10. There are grooves on the side for placing the sealing ring 8. The filter circuit board 3 is used to arrange the protection circuit and filter circuit of the icing detection control box. The main advantage of isolating the protection circuit and filter circuit on a single circuit board is that it optimizes noise isolation and electromagnetic compatibility.

[0019] The long support column 4 and the short support column 5 have similar structures, with one end having an external thread and the other end having a cylindrical structure combining hexagonal and cylindrical shapes, and an internal thread inside. The power circuit board 6, signal circuit board 7, and base 10 are fastened together through the internal and external threads.

[0020] The power circuit board 6 is used to arrange the power module and other devices of the icing detection and control box. The purpose is to centrally arrange the main heat-generating components for easy thermal management.

[0021] The signal circuit board 7 is used to house the core components of the icing detection control box, such as the microcontroller and bus transceiver, with the aim of shortening the signal transmission trace distance and isolating digital noise.

[0022] The outer cover 9 and the sealing ring 8 are used to isolate the internal structure from the external environment, achieving a good electromagnetic shielding effect.

[0023] The base 10 has a symmetrical structure with mounting lugs on the outer side for fixing the product; it has threaded holes and bosses on the inside for fixing the front panel 2, short support column 5, and outer cover 9; the inner boss has a groove on the side for placing the sealing ring 8. Example This invention provides an icing detection control box structure. According to its functional requirements, the internal components are arranged on a filter circuit board 3, a power circuit board 6, and a signal circuit board 7. The filter circuit board 3 is fixed on the front panel 2. The power circuit board 6 and the signal circuit board 7 are fixed on the base 10 by short support pillars 5 and standard screws. The signals between different internal circuit boards are transmitted through inter-board connectors without any wire connection, which greatly simplifies the assembly operation steps.

[0024] The electrical connector 1 is fastened to the central plane of the front panel 2 from the outside in by four sets of M3 lead-sealed screws, flat washers, spring washers, and nuts. The filter circuit board 3 is fastened to four cylindrical bosses inside the front panel 2 by four sets of M3 cylindrical head screws, spring washers, and flat washers. The cylindrical bosses are provided with internal threads for connection. The electrical connector 1 adopts a pin-type insertion structure. The pins pass through the pre-drilled pad holes on the filter circuit board 3 for soldering, ensuring the transmission of internal and external signals of the product.

[0025] The short support column 5 is fixed to the base 10 by external threads. After the four mounting holes of the power circuit board 6 are aligned with the internal thread holes of the short support column 5, the external thread of the long support column 4 is screwed into the internal thread of the short support column 5 for fastening. After the four mounting holes of the signal circuit board 7 are aligned with the internal thread holes of the long support column 4, they are fastened by screwing into the internal thread holes of the long support column 4 with four sets of M3 cylindrical head screws, spring washers, and flat washers. The power circuit board 6 and the signal circuit board 7 transmit signals through two sets of 180° inter-board connectors on the circuit board.

[0026] After the electrical connector 1, filter circuit board 3, power circuit board 6, and signal circuit board 7 are installed, the front panel 2 is installed along the axial direction of the electrical connector 1. The signal transmission connection between the filter circuit board 3 and the power circuit board 6 is completed through the 90° inter-board connector. The front panel 2 is fixed by the four countersunk holes at the bottom of the base 10. At this time, the icing detection control box forms an L-shaped installation structure.

[0027] The sealing ring 8 is made of G514 rubber, which has good conductivity and sealing performance. After the front panel 2 and the base 10 are assembled, the sealing ring 8 is placed in the groove with a width of 2.1mm on the side. The outer cover 9 is slid in along the direction of the boss on the side of the base 10. After the four groove holes at the bottom of the base 10 are aligned with the boss holes inside the outer cover 9, they are fastened with four M4 cylindrical head screws.

Claims

1. An icing detection and control box structure, characterized in that: The structure includes: an electrical connector, a front panel, a filter circuit board, a power supply circuit board, a signal circuit board, an outer cover, and a base; The electrical connector is fixed to the front panel; The filter circuit board is fixed to the protrusion on the inner surface of the front panel; the pins of the electrical connector are soldered to the filter circuit board for signal transmission. The power circuit board is fixed to the base by short and long support pillars; The signal circuit board is fixed to the end of the long support column; The filter circuit board is connected to the power supply circuit board via a 90° inter-board connector. The power supply circuit board is connected to the signal circuit board via a 180° inter-board connector; The outer cover, front panel, and base form a closed cavity.

2. The structure according to claim 1, characterized in that: The front panel has one large Ф26mm round hole and four small Ф3.2mm round holes in the center for fixing the electrical connector. Inside, there are four cylindrical bosses for fixing the filter circuit board, and at the bottom, there are four square bosses for fixing to the base. There are grooves on the sides for placing the sealing ring.

3. The structure according to claim 2, characterized in that: The base has a symmetrical structure with mounting lugs on the outer side for fixing the product; threaded holes and bosses on the inside for fixing the front panel, short support, and outer cover; and grooves on the side of the internal boss for placing the sealing ring.

4. The structure according to claim 1, characterized in that: The long and short pillars have the same structure but different lengths. One end is externally threaded, and the other end is a cylindrical structure combining hexagonal and cylindrical shapes. The internal structure is internally threaded, and the power circuit board, signal circuit board, and base are fastened together through the internal and external threads.

5. The structure according to claim 2, characterized in that: The electrical connector is secured to the front panel using M3 lead-sealed screws, spring washers, flat washers, and nuts.

6. The structure according to claim 2, characterized in that: The filter circuit board is fixed to the internal boss of the front panel by M3 cylindrical head screws, spring washers, and flat washers.

7. The structure according to claim 4, characterized in that: The signal circuit board is fixed to the long support column by M3 cylindrical head screws, spring washers, and flat washers.

8. The structure according to claim 3, characterized in that: The front panel is fixed to the base with M4 countersunk screws.

9. The structure according to claim 8, characterized in that: The outer cover is fixed to the base with M4 cylindrical head screws.

10. The structure according to claim 3, characterized in that: There are sealing rings between the outer cover and the front panel and the base for sealing.

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