Micro rectangular electric connector for high and low frequency mixed signal transmission

Abstract

The utility model relates to a micro rectangular electric connector for high and low frequency mixed signal transmission, which is characterized in that two sides of an upper shell and a lower shell are locked through guide columns in a threaded manner, the guide columns penetrate out of the upper end surface of the upper shell, and more than one low frequency transmission module and more than one radio frequency transmission module are connected in the upper shell and the lower shell in a penetrating manner; the low-frequency transmission module is formed by connecting a low-frequency insulation base and a low-frequency insulation fixing plate in an up-down covering mode, a plurality of low-frequency contact heads upwards penetrate out of the low-frequency insulation base, the lower end of each low-frequency contact head abuts against a low-frequency pin through a fuzz button, and the low-frequency pins downwards penetrate out of the low-frequency insulation fixing plate. The radio frequency transmission module is the same as the low frequency transmission module, and only adopts a single contact, a fastener and a pin structure. A modular design is adopted, and transmission of various signals is realized by installing different transmission modules into the connector shell; and the fuzz buttons, the contact heads and the pins are used as elastic pieces to realize floating connection with the PCB, so that floating installation, abundant types of transmission signals and small-sized lightweight integration are effectively considered.

Description

Technical Field

[0001] The utility model relates to an electric connector, in particular to a micro rectangular electric connector for transmitting high and low frequency mixed signals. Background Art

[0002] With the application of ultra-large-scale integrated circuits, microelectronics technology has developed rapidly, and requirements for miniaturization, lightweighting, and high reliability of electronic equipment have been put forward. In addition, due to the development of information technology, while equipment is required to be miniaturized, its functions are also becoming more diversified and complex. This has led to an increasing number of functional modules in the equipment, an increase in the number of signal transmissions between subsystems, and an increase in the number of signal types. Therefore, connectors are required to have a compact size, sufficient transmission channels, and the ability to transmit signals of various frequencies. The traditional solution is to separate low-frequency signals from radio-frequency signals, with low-frequency signals transmitted by low-frequency connectors and radio-frequency signals transmitted by radio-frequency connectors, and then miniaturize each of them on this basis. When the number of various signals is large, the number of connectors required will increase, making it impossible to meet the requirements of miniaturization and lightweighting. Therefore, a small connector that can integrate the two signals into one is needed.

[0003] Furthermore, connectors that use headers to transmit signals between two devices' PCBs cannot be used in extremely low spaces (5mm to 10mm) due to height restrictions. Direct soldering of wires is typically used to transmit signals between the two devices, preventing quick separation and significantly reducing maintenance convenience. This also fails to meet the modular requirements of the devices. Therefore, new, environmentally resistant miniature connectors suitable for transmitting mixed high- and low-frequency signals while ensuring stable signal transmission are urgently needed. Summary of the Invention

[0004] In order to solve the deficiencies of the prior art, the utility model provides a micro rectangular electrical connector for high and low frequency mixed signal transmission that effectively takes into account floating installation and rich transmission signal types, as well as small, lightweight integration.

[0005] The technical solution adopted by the utility model is: a high-low frequency mixed signal transmission micro rectangular electrical connector, including an upper shell and a lower shell, which is characterized in that: both sides of the upper and lower shells are screw-locked by guide columns, the guide columns pass through the upper end surface of the upper shell, and the upper and lower shells are connected with one or more low-frequency transmission modules and one or more radio frequency transmission modules. The low-frequency transmission module includes a low-frequency insulating base, a low-frequency insulating fixing plate, multiple low-frequency contact heads, hair buttons and multiple low-frequency pins. The low-frequency insulating base and the low-frequency insulating fixing plate are connected in an upper and lower cover manner. The multiple low-frequency contacts are connected in an upper and lower cover manner. The head is passed through the low-frequency insulating base with the head facing upward, and the lower end of each low-frequency contact head abuts the low-frequency pin through the hair button, and the low-frequency pin passes through the low-frequency insulating fixing plate downward; the RF transmission module includes an RF insulating base, an RF insulating fixing plate, an RF contact head, a hair button and an RF pin, and the RF insulating base and the RF insulating fixing plate are connected in an upper and lower cover manner, the RF contact head passes through the RF insulating base with the head facing upward, and the lower end of the RF contact head abuts the RF pin through the hair button, and the RF pin passes through the RF insulating fixing plate downward; the lower end of the lower shell is provided with a locking screw for passing through and locking the PCB board.

[0006] The wool buttons are gold-plated wool buttons.

[0007] There is one or more differential signal transmission modules connected in the upper and lower shells, and the structure of the differential signal transmission module is the same as that of the low-frequency transmission module.

[0008] There is one or more power transmission modules connected in the upper and lower shells, and the structure of the power transmission module is the same as that of the low-frequency transmission module.

[0009] A sealing gasket is provided on the upper end surface of the upper shell.

[0010] The outer periphery of the low-frequency insulating base has an upward lower step and guide keys in the up and down directions. The guide keys cooperate with the guide grooves on the inner walls of the installation openings in the upper and lower shells. The inner walls of the installation openings in the upper and lower shells are provided with upper steps corresponding to the lower steps.

[0011] The outer end of the guide column is a ball head structure.

[0012] A plurality of probes are evenly distributed around the periphery of the radio frequency transmission module and are connected with the upper and lower shells.

[0013] A probe which is connected to the upper and lower shells is arranged on the center line between two adjacent radio frequency transmission modules.

[0014] This new connector utilizes small, velvet-shaped buttons as contacts, significantly reducing its size and ensuring reliable signal transmission even under high-speed impacts (800g). Its modular design allows for the installation of various transmission modules within the connector housing to facilitate signal transmission. The velvet-shaped buttons, contacts, and pins serve as elastic components, enabling a floating connection to the PCB. Probes are installed within the upper and lower housings of the connector, acting as external components for the RF transmission modules, providing electromagnetic shielding for the modules and enhancing overall anti-interference capabilities.

[0015] The transmission module assembly uses gold-plated wool buttons as the signal transmission medium, and takes advantage of the high elasticity of the wool buttons to ensure reliable contact with external contacts even in high impact and vibration environments. Compared with similar products, it greatly improves the vibration and impact resistance and greatly reduces the product size, so it can be used in extremely small spaces.

[0016] The upper and lower housings utilize a modular design. While maintaining the connector's overall dimensions, the connector can be adapted to various signal transmission requirements by simply replacing the transmission module in the internal mounting port. The module and the mounting port's inner wall utilize a stepped, keyway-fitting structure, and the entire assembly is secured with threaded fastenings, making it removable and easy to maintain and replace. This modular design enriches the product's product range and allows for a wider range of signal types, including low-frequency, RF, differential, and power signals. Compared to traditional connectors that can only transmit a single signal, it offers a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the low-frequency transmission module of the utility model;

[0019] Figure 3 This is a cross-sectional view of the radio frequency transmission module of the present utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the utility model between the upper and lower PCB boards.

[0021] In the figure: upper shell 1, lower shell 2, guide column 3, mounting port 4, lower step 41, guide groove 5, low-frequency transmission module 6, low-frequency insulation base 61, low-frequency insulation fixing plate 62, low-frequency contact head 63, low-frequency pin 64, low-frequency hair button 65, upper step 66, guide key 67, radio frequency transmission module 7, radio frequency insulation base 71, radio frequency insulation fixing plate 72, radio frequency contact head 73, radio frequency pin 74, radio frequency hair button 75, locking screw 8, upper PCB board 9, guide hole 10, lower PCB board 11, locking hole 12. DETAILED DESCRIPTION

[0022] The following is further explained with reference to the accompanying drawings.

[0023] Figure 1-3 As shown: a high-low frequency mixed signal transmission micro rectangular electrical connector, including an upper shell 1, a lower shell 2, a guide column 3, a mounting port 4, a guide groove 5, a low-frequency transmission module 6, a radio frequency transmission module 7 and a locking screw 8. Both sides of the upper and lower shells 1 and 2 are threadedly locked by the guide column 3. The guide column 3 passes through the upper end surface of the upper shell 1. The upper end head of the guide column 3 is a ball head structure. A plurality of mounting ports 4 are provided in the upper and lower shells 1 and 2. There are more than one low-frequency transmission module 6 and more than one radio frequency transmission module 7 connected in the plurality of mounting ports 4. The low-frequency transmission module 6 includes a low-frequency insulating base 61, a low-frequency insulating fixing plate 62, a plurality of low-frequency contact heads 63, a low-frequency wool button 65 and a plurality of low-frequency pins 64. The low-frequency insulating base 61 and the low-frequency insulating fixing plate 62 are connected in an upper and lower cover manner. The low-frequency insulating base 61 is provided with an upper step 66 and a guide key 67 in the upper and lower directions. The step 66 fits tightly against the lower step 41 in the mounting port 4, the guide key 67 is inserted into the guide groove 5 in the mounting port 4, and multiple low-frequency contact heads 63 pass through the low-frequency insulating base 61 upward, and the lower end of each low-frequency contact head 63 abuts against the low-frequency pin 64 through the low-frequency wool button 65, and the low-frequency pin 64 passes through the low-frequency insulating fixing plate 62 downward; the RF transmission module 7 includes an RF insulating base 71, an RF insulating fixing plate 72, an RF contact head 73, an RF wool button 75 and an RF pin 74, and the RF insulating base 71 and the RF insulating fixing plate 72 are connected in an upper and lower cover manner. The mounting structure of the RF insulating base in the mounting port is the same as that of the low-frequency insulating base, the RF contact head 73 passes through the RF insulating base 71 upward, and the lower end of the RF contact head 73 abuts against the RF pin 74 through the RF wool button 75, and the RF pin 74 passes through the RF insulating fixing plate 75 downward; a through-locking screw 8 is provided at the lower end of the lower shell.

[0024] There is one or more differential signal transmission modules connected in the upper and lower shells, and the structure of the differential signal transmission module is the same as that of the low-frequency transmission module.

[0025] There is one or more power transmission modules connected in the upper and lower shells, and the structure of the power transmission module is the same as that of the low-frequency transmission module.

[0026] Figure 4 As shown, when installed between the upper and lower PCB boards 9 and 11, the guide column 3 is connected to the guide hole 10 of the upper PCB board 9, and the lower PCB board 11 is locked at the lower end of the lower shell through the locking hole 12 of the lower PCB board 11 via the locking screw 8.

[0027] Based on this embodiment, the multiple installation ports can also be used to install more than one differential signal transmission module and power transmission module, and their structures are the same as those of the low-frequency transmission module.

[0028] Based on this embodiment, probes are arranged outside the radio frequency transmission modules or between the modules.

[0029] In this embodiment, the fur button is preferably a gold-plated fur button. The fur button acts as an elastic member, allowing the connector contact to float axially. Typically, when subjected to high impact and vibration, the PCB board will deform and cause surface warping. Due to the floating structure of this connector, the floating amount can compensate for the height difference caused by this deformation, ensuring reliable contact between the contact head and the PCB board contacts. Compared to similar products that mostly use soldering connections, which are prone to failure in high-impact and high-vibration environments, leading to signal transmission interruption, the floating structure of this connector prevents this.

Claims

1. A micro rectangular electrical connector for high and low frequency mixed signal transmission, comprising an upper housing and a lower housing, characterized in that: Both sides of the upper and lower shells are locked by guide column threads, and the guide column passes through the upper end surface of the upper shell. There are more than one low-frequency transmission module and more than one radio frequency transmission module connected in the upper and lower shells. The low-frequency transmission module includes a low-frequency insulating base, a low-frequency insulating fixing plate, multiple low-frequency contact heads, a hair button and multiple low-frequency pins. The low-frequency insulating base and the low-frequency insulating fixing plate are connected in an upper and lower cover manner. The multiple low-frequency contact heads pass through the low-frequency insulating base upward, and the lower end of each low-frequency contact head abuts the low-frequency pin through the hair button, and the low-frequency pin passes through the low-frequency insulating fixing plate downward; the radio frequency transmission module includes a radio frequency insulating base, a radio frequency insulating fixing plate, a radio frequency contact head, a hair button and a radio frequency pin. The radio frequency insulating base and the radio frequency insulating fixing plate are connected in an upper and lower cover manner. The radio frequency contact head passes through the radio frequency insulating base upward, and the lower end of the radio frequency contact head abuts the radio frequency pin through the hair button, and the radio frequency pin passes through the radio frequency insulating fixing plate downward; the lower end of the lower shell is provided with a locking screw for passing through and locking the PCB board.

2. The micro rectangular electrical connector for high and low frequency mixed signal transmission according to claim 1, characterized in that: The wool buttons are gold-plated wool buttons.

3. The micro rectangular electrical connector for high and low frequency mixed signal transmission according to claim 1, characterized in that: There is one or more differential signal transmission modules connected in the upper and lower shells, and the structure of the differential signal transmission module is the same as that of the low-frequency transmission module.

4. A micro rectangular electrical connector for high and low frequency mixed signal transmission according to claim 1 or 3, characterized in that: There is one or more power transmission modules connected in the upper and lower shells, and the structure of the power transmission module is the same as that of the low-frequency transmission module.

5. The micro rectangular electrical connector for high and low frequency mixed signal transmission according to claim 1, characterized in that: A sealing gasket is provided on the upper end surface of the upper shell.

6. The micro rectangular electrical connector for high and low frequency mixed signal transmission according to claim 1, characterized in that: The outer periphery of the low-frequency insulating base has an upward lower step and guide keys in the up and down directions. The guide keys cooperate with the guide grooves on the inner walls of the installation openings in the upper and lower shells. The inner walls of the installation openings in the upper and lower shells are provided with upper steps corresponding to the lower steps.

7. The micro rectangular electrical connector for high and low frequency mixed signal transmission according to claim 1, characterized in that: The outer end of the guide column is a ball head structure.

8. The micro rectangular electrical connector for high and low frequency mixed signal transmission according to claim 1, characterized in that: A plurality of probes are evenly distributed around the periphery of the radio frequency transmission module and are connected with the upper and lower shells.

9. A micro rectangular electrical connector for high and low frequency mixed signal transmission according to claim 1 or 8, characterized in that: A probe which is connected to the upper and lower shells is arranged on the center line between two adjacent radio frequency transmission modules.

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