Automobile radio frequency receiving module structure

Abstract

The utility model discloses an automobile radio frequency receiving module structure, a housing is a cavity structure with a top opening, one side of the housing is fixedly provided with a connector, the connector is formed by fixing a plurality of L-shaped PI N pins side by side, one end of each PI N pin extends out of a plugging port outside the housing, the other end of each PI N pin faces the opening direction in the housing, and the other end of each PI N pin extends out of the plugging port. An opening of the shell is covered with a PCBA board, components on the PCBA board are located on the inner side of the shell, and a PI N pin in the shell is electrically connected with the PCBA board. According to the radio frequency receiving module structure provided by the utility model, the used devices are greatly reduced, so that the volume of the whole radio frequency receiving module is reduced, the module is integrated, miniaturized and convenient to install, the process production cost of the radio frequency module is greatly saved, and the long-term stability of the sealing performance of the radio frequency module in different environments is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile radio frequency receiving modules. Background Art

[0002] The RF receiving module is mainly used in the car to output high-intensity radio wave signals from the radio wave signals received by multiple antennas. The terminal accesses the Internet through the antenna to obtain information, entertainment or mobile office business models. In the car, it is mainly used in applications including in-vehicle infotainment systems, in-vehicle hands-free and keyless start. It is a communication technology that supports short-distance communication between devices.

[0003] Currently, most existing radio frequency receiving modules are installed in the dashboard of the car or on the roof beam. For example, the public document with announcement number CN216310807U, publication date 2022-04-15, and patent name "Vehicle-mounted Electronic Tags and Vehicles" discloses a vehicle-mounted electronic tag. In order to solve the problem that the vehicle-mounted electronic tag affects the driver's line of sight during use, the vehicle-mounted electronic tag of the utility model includes: a tag body module and a radio frequency module. The vehicle-mounted electronic tag is split, and the tag body module and the radio frequency module are connected in communication. The tag body module is set at a position inside the vehicle that does not block the field of vision, and the radio frequency module is set at the position of the instrument panel in contact with the front windshield. Radio frequency receiving modules with similar installation methods have the problems of occupying a large space and being difficult to install. Summary of the invention

[0004] The technical problem to be solved by the utility model is to realize a car radio frequency receiving module structure which is based on miniaturization and convenient installation.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a car radio frequency receiving module structure, the shell is a cavity structure with a top opening, a connector is fixed on one side of the shell, and the connector is composed of a plurality of L-shaped PIN pins fixed side by side, one end of the PIN pins extends out of the plug interface outside the shell, and the other end is in the shell toward the opening direction, the opening of the shell is covered with a PCBA board, and the PIN pins in the shell are electrically connected to the PCBA board.

[0006] The connector is fixed in the housing by integral injection molding.

[0007] The PIN pin is a fisheye structure pin, and the four corners of the fisheye structure pin are a solder-free pin structure with rounded corners. The PIN pin is fixed on the PCBA board by press-fitting.

[0008] The four corners of the shell are provided with protruding clamping posts, and the four corners of the PCBA board are provided with mounting holes corresponding to the positions of the clamping posts.

[0009] The clamping column is provided with four functional sections from top to bottom, namely a guiding section, a clamping section, a limiting section and a fixing section. The fixing end is used to be fixed in the shell. The outer diameter of the limiting section is larger than the mounting hole. The clamping section is composed of a plurality of elastic connecting rods bent outward. The outer diameter of the clamping section is slightly larger than the space of the mounting hole. During installation, the clamping section is tightly fixed in the mounting hole through the deformation of the connecting rod. The outer diameter of the guiding section is smaller than the outer diameter of the mounting hole.

[0010] The top end of the clamping column is inside the shell.

[0011] The shell is provided with a sealing cover, and the sealing cover makes the waterproof sealing level of the shell reach IPX7.

[0012] The components on the PCBA board are located inside the housing.

[0013] The radio frequency receiving module structure of the utility model uses greatly fewer components, thereby reducing the volume of the entire radio frequency receiving module, making the module integrated, miniaturized, and easy to install, greatly saving the process production cost of the radio frequency module and improving the long-term stability of the sealing performance of the radio frequency module in different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following is a brief description of the contents expressed in each figure in the utility model specification and the marks in the figure:

[0015] Figure 1 This is a schematic diagram of the housing without the PCBA board installed;

[0016] Figure 2 This is a schematic diagram of the pressing of the housing and PCBA board;

[0017] Figure 3 It is a schematic diagram of the PI N structure;

[0018] Figure 4 This is a schematic diagram of the pressing of the clamping column and the PCBA board;

[0019] The markings in the above figures are: 1. Shell; 2. Plug interface; 3. PIN pin; 4. PCBA board; 5. Snap-in column. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the specific implementation methods of the present invention, such as the shapes and structures of the components involved, the relative positions and connection relationships between the components, the functions and working principles of the components, the manufacturing process and the operation and use methods, etc., through the description of the embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0021] The overall structure of the automotive RF receiving module is a shell 1 structure. The top of the shell 1 is open, and a matching sealing cover is provided on the side of the opening. After the sealing cover and the shell 1 are buckled together, the waterproof sealing level IPX7 can be achieved. The shape of the shell 1 can be designed as needed. One side of the shell 1 is provided with a plug-in interface 2 for plugging in other devices. The plug-in interface 2 is provided with a connector. The connector is composed of a plurality of L-shaped PIN pins 3 fixed side by side, such as Figure 3 As shown, one end of the PIN pin 3 extends out of the plug interface 2 outside the housing 1, and the other end faces the opening direction in the housing 1. The PIN pin 3 and the plug interface 2 can be integrally injection molded to improve the waterproof sealing level of the product connector end. The specific steps are that the metal PIN needs to be stamped with a stamping die and then electroplated. Secondly, the processed 6 metal PINs are placed in the insert 9 plug interface 2. Finally, the insert with the PIN is placed in the mold core and injection molded as a whole at one time, which ensures the precise positioning of the metal PIN and the verticality with the end face of the PIN pin 3. The dimensional accuracy is high and the waterproof sealing level of the connector is improved. Then the plug interface 2 containing the PIN pin 3 is integrally injection molded with the housing 1, so that the waterproof sealing level of the entire housing 1 can meet the IPX7 requirements of the DIN40050-9 standard.

[0022] The opening of the housing 1 is covered with a PCBA board 4. The components on the PCBA board 4 are located inside the housing 1, so that the housing 1 can better protect the components. The PIN pin 3 in the housing 1 is electrically connected to the PCBA board 4. The PIN pin 3 preferably adopts a fisheye structure pin. The PIN pin of the connector in the prior art is tightly connected to the end of the PCBA board 4 mainly by post-welding or wave soldering. As a widely used welding technology, wave soldering is prone to defects such as poor tin penetration or bridging. The production efficiency of the post-welding method is relatively low. Figure 3 The PIN pin 3 of the fisheye terminal adopts a fisheye structure, and the fisheye terminal is a kind of PRESS FIT, made of copper alloy material. Its two elastic parts are squeezed and elastically contracted, so that the fisheye terminal can be smoothly inserted into the hole of the circuit board, thereby realizing the electrical connection between the fisheye terminal and the circuit board, making it convenient and efficient to assemble with the circuit board, with stable contact, no welding and convenient disassembly. The new fisheye-shaped four-angled solder-free pin structure with rounded corners is conducive to workers quickly press-fitting PCBA and fisheye PIN feet, which is conducive to improving the production efficiency of the production line and avoiding damage to PCBA and components during the welding process.

[0023] The four corners of the shell 1 are provided with protruding clamping columns 5, and the top ends of the clamping columns 5 are inside the shell 1 to avoid interference with the sealing cover. The four corners of the PCBA board 4 are provided with mounting holes corresponding to the positions of the clamping columns 5. They are fixed by clamping, which is faster and more reliable. The structure and parameters of each clamping column 5 are the same. The clamping column 5 is provided with four functional sections from top to bottom, namely, a guide section, a clamping section, a limit section and a fixed section. The fixed end is used to be fixed in the shell 1. The outer diameter of the limit section is larger than the mounting hole. The clamping section is composed of a plurality of elastic connecting rods bent outward. The outer diameter of the clamping section is slightly larger than the space of the mounting hole. During installation, the clamping section is tightly fixed in the mounting hole through the deformation of the connecting rod. The outer diameter of the guide section is smaller than the outer diameter of the mounting hole.

[0024] The radio frequency receiving module structure of the utility model is a brand-new structural design. The assembly includes 6 metal PINs, plastic parts, PCBA and other parts. First, the connector and the module shell are injection molded into a whole. Secondly, the solder-free connection structure of the PCBA board 4 and the PIN needle 3 is installed in the cavity formed between the two shells 1. Finally, a compact product structure design is realized, the waterproof sealing level of the radio frequency receiving module is improved, the production efficiency is improved, and the requirements of high product strength and low component cost are achieved.

[0025] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A car radio frequency receiving module structure, the shell is a cavity structure with an opening at the top, a connector is fixed on one side of the shell, characterized in that: The connector is composed of a plurality of L-shaped PIN pins fixed side by side, one end of each of the PIN pins extends out of the plug interface outside the shell, and the other end is in the shell toward the opening direction, the opening of the shell is covered with a PCBA board, and the PIN pins in the shell are electrically connected to the PCBA board.

2. The automotive radio frequency receiving module structure according to claim 1, characterized in that: The connector is fixed in the housing by integral injection molding.

3. The automotive radio frequency receiving module structure according to claim 2, characterized in that: The PIN pin is a fisheye structure pin, and the four corners of the fisheye structure pin are a solder-free pin structure with rounded corners. The PIN pin is fixed on the PCBA board by press-fitting.

4. The automotive radio frequency receiving module structure according to claim 1, 2 or 3, characterized in that: The four corners of the shell are provided with protruding clamping posts, and the four corners of the PCBA board are provided with mounting holes corresponding to the positions of the clamping posts.

5. The automotive radio frequency receiving module structure according to claim 4, characterized in that: The clamping column is provided with four functional sections from top to bottom, namely a guiding section, a clamping section, a limiting section and a fixing section. The fixing section is used to be fixed in the shell. The outer diameter of the limiting section is larger than the mounting hole. The clamping section is composed of a plurality of elastic connecting rods bent outward. The outer diameter of the clamping section is slightly larger than the space of the mounting hole. During installation, the clamping section is tightly fixed in the mounting hole through the deformation of the connecting rod. The outer diameter of the guiding section is smaller than the outer diameter of the mounting hole.

6. The automotive radio frequency receiving module structure according to claim 5, characterized in that: The top end of the clamping column is inside the shell.

7. The automotive radio frequency receiving module structure according to claim 1 or 6, characterized in that: The components on the PCBA board are located inside the housing.

8. The automotive radio frequency receiving module structure according to claim 7, characterized in that: The shell is provided with a sealing cover, and the sealing cover makes the waterproof sealing level of the shell reach IPX7.

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