A waterproof connector with a built-in resistor

Abstract

The utility model provides a waterproof connector containing resistance, including insulating body, terminal group and shell, terminal group includes at least a pair of first terminal, a pair of second terminal and a pair of third terminal, and the welding has an electric resistance between one first terminal and one second terminal, and the welding has another electric resistance between another first terminal and another second terminal, and the first solder pad that forms with the one end connection of electric resistance is formed on the first terminal, and the second solder pad that forms with the other end connection of electric resistance is formed on the second terminal, be equipped with the accommodation groove on the insulating body, and two electric resistance and first solder pad and second solder pad are placed into the accommodation groove, and the accommodation groove still fills with sealant, compared with prior art, the waterproof connector containing resistance, the electric resistance is in the accommodation groove and is welded between corresponding first solder pad and second solder pad, and the accommodation groove of placing resistance is filled and sealed with sealant, and when the shell of subsequent injection moulding is carried out, can resist external pressure, ensure that the electric resistance and corresponding solder pad steady welding.

Description

Technical Field

[0001] This utility model relates to the field of connectors, and in particular to a waterproof connector with an internal resistor. Background Technology

[0002] With the development of electronic products, the USB Association has designated the Type-C interface as the unified interface for all electronic products, aiming to reduce the variety of interfaces and avoid material waste. According to the USB Association, the Type-C interface has many functional pins (also called functional terminals), each with its own function. The configuration pins (CC1 / CC2, VCONN) are used to detect and identify the connected device. Typically, functional resistors connected to the configuration pins are used to distinguish the device type (Source, Sink, DRP). For example, pull-up resistors (Rp) and additional resistors (Ra) are used on the host side to enable the device to recognize the connected peripheral device; pull-down resistors (Rd) and additional resistors (Ra) are used on the peripheral device to help with role identification and power management. Furthermore, for USB Power Delivery (PD), the CC line can also transmit higher power levels and alternating modes.

[0003] In existing technologies, the common practice is to pre-solder the functional resistors onto a PCB board and then connect the PCB board to the configuration pins. This method requires an additional PCB board, which increases both material and manufacturing costs. Furthermore, when the TYPE-C interface is used as a USB PD connector, the thickness of the copper foil on the PCB board limits the passage of large currents, affecting the transmission of higher power levels.

[0004] To address the aforementioned issues, patent CN223181471U describes a method where the tail ends of the two signal terminals in the receiving groove are connected to the grounding terminal via two resistors. A sealing block integrally formed with the housing is used to seal the receiving groove. However, since the sealing block is integrally formed with the housing, and the housing is molded using injection molding, the injection pressure is typically high, reaching 50-200 MPa (approximately 500-2000 times atmospheric pressure), far exceeding conventional air pressure (approximately 0.1 MPa). Under these conditions, the resistors within the receiving groove must withstand immense pressure and tension, easily causing the resistors to detach from their corresponding terminals, resistor displacement and deformation, and softening of the solder paste used to solder the resistors to their corresponding terminals, thus affecting the normal operation of the connector. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a waterproof connector with an internal resistor. By filling the mounting groove with sealant, the resistor can be stably soldered to the corresponding terminal, and the connector also provides a waterproof function.

[0006] The technical solution adopted in this utility model is as follows: A waterproof connector with built-in resistors includes an insulating body, a terminal group disposed on the insulating body, and a housing disposed outside the insulating body. The terminal group includes at least a pair of first terminals, a pair of second terminals, and a pair of third terminals. A resistor is soldered between one first terminal and one second terminal, and another resistor is soldered between another first terminal and another second terminal. A first pad connected to one end of the resistor is formed on the first terminal, and a second pad connected to the other end of the resistor is formed on the second terminal. The insulating body is provided with a mounting groove, into which two resistors and the first and second pads connected to the two ends of the resistors are placed. The mounting groove is also filled with sealant for the interior of the mounting groove and the gap around the two resistors.

[0007] Preferably, the mounting slot includes two side-by-side mounting slots, with the two resistors respectively located in the two mounting slots and connected to the first pad of the corresponding first terminal and the second pad of the corresponding second terminal.

[0008] More preferably, each slot is provided with a front cutout and a rear cutout, the first pad is inserted into the front cutout and connected to one end of the resistor, and the second pad is inserted into the rear cutout and connected to the other end of the resistor.

[0009] Preferably, the placement slot is provided with a partition, which divides the placement slot into two independent placement slots. The partition is provided with an opening for connecting the two placement slots and for the flow of sealant.

[0010] Preferably, the first terminal is a signal terminal and the second terminal is a power terminal, with a resistor soldered between the corresponding signal terminal and the power terminal.

[0011] Preferably, the first terminal is a signal terminal and the second terminal is a ground terminal, with a resistor soldered between the corresponding signal terminal and the ground terminal.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a waterproof connector containing a resistor, wherein the resistor is soldered between the first pad in the corresponding first terminal and the second pad in the corresponding second terminal. The resistor and the first and second pads at both ends of the resistor are placed in a mounting groove. The mounting groove for placing the resistor is filled and sealed with sealant. When the outer shell is subsequently injection molded, it can resist external pressure, ensure stable soldering between the resistor and the corresponding terminal, and play a waterproof role. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a waterproof connector containing an internal resistor provided by this utility model.

[0014] Figure 2 This is an exploded view of a waterproof connector containing an internal resistor provided by this utility model.

[0015] Figure 3 This is a schematic diagram of a terminal group in a waterproof connector containing an internal resistor, provided by this utility model.

[0016] Figure 4 This is a schematic diagram of the insulating body in a waterproof connector containing an internal resistor provided by this utility model. Detailed Implementation

[0017] The preferred embodiments of this utility model will be described in detail with reference to the accompanying drawings.

[0018] Figures 1 to 4 This is a preferred embodiment of a waterproof connector containing an internal resistor provided by this utility model. For example... Figures 1 to 4As shown, the waterproof connector containing resistors includes an insulating body 10, a terminal group 20 disposed on the insulating body, and a housing 30 disposed outside the insulating body. The terminal group 20 includes at least a pair of first terminals 21, a pair of second terminals 22, and a pair of third terminals 23. A resistor 24 is soldered between one first terminal 21 and one second terminal 22, and another resistor 24 is soldered between another first terminal 21 and another second terminal 22. A first pad 211 is formed on the first terminal 21 and connected to one end of the resistor 24, and a second pad 221 is formed on the second terminal 22 and connected to the other end of the resistor 24. The insulating body 10 is provided with a mounting groove 11. The two resistors 24 and the first pad 211 and the second pad 221 connected to the two ends of each resistor are placed in the mounting groove 11. The mounting groove 11 is filled with sealant 12 for the gaps between the mounting groove 11 and the resistors 24. During the assembly process of the connector, the terminal group 20 (as an insert) is first placed into a mold, and then molten insulating material (such as engineering plastic) is injected. The terminal group 20 and the insulating body 10 are integrally formed by cooling and curing. The first pad 211 and the second pad 221 extend into the mounting groove 11. Two resistors 24 are then placed in the mounting groove 11 in the insulating body 10. Each resistor 24 is soldered between the first pad 211 of the corresponding first terminal 21 and the second pad 221 of the corresponding second terminal 22. After the resistors 24 are soldered, the mounting groove 11 for the resistors 24 is filled and sealed with sealant 12. After the sealant 12 cures, the integrally formed terminal group 20 and the insulating body 10 are then connected. The insulating body 10 is placed in another pre-set mold as an insert. Shell material is injected into the mold to form a shell 30 enclosing the insulating body 10. Since the injection pressure is usually high during the secondary injection molding process to form the shell 30, sealant 12 is used to fill the sealing groove 11 before the secondary injection molding. The cured sealant 12 can prevent the solder joints between the resistor 24 and the terminal from detaching, the resistor 24 from shifting or deforming, and the solder paste between the resistor 24 and the terminal from softening. Simultaneously, the sealant 12 provides waterproofing. It is worth noting that this embodiment uses a 6-pin TYPE C female waterproof connector (…). Figures 1 to 4 This is an example, but it should be noted that the technical solution described in this utility model is also applicable to TYPE C male waterproof connectors.

[0019] The insulating body 10 includes an integrally formed body 101 and a tongue 102. The tail end of the terminal group is provided corresponding to the body 101, and the head end of the terminal group is provided corresponding to the tongue 102. The mounting groove 11 is provided on the body 101.

[0020] The mounting slot 11 includes two parallel mounting slots 111, with two resistors 24 respectively located in the two mounting slots 11 and connected to corresponding first terminals 21 and second terminals 22. Each mounting slot 111 has a front cutout 1111 and a rear cutout 1112. The first pad 211 is inserted into the front cutout 1111 and connected to one end of the resistor 24, and the second pad 221 is inserted into the rear cutout 1112 and connected to the other end of the resistor 24, to prevent the first pad 211 and the second pad 221 from shaking or shifting, which would affect the soldering of the resistors 24.

[0021] The placement slot 11 is provided with a partition 1101, which divides the placement slot 11 into two sub-slots 111. The partition 1101 is provided with an opening 1102 for connecting the two sub-slots 111 and allowing the sealant 12 to flow through. In this way, when the sealant 12 is filled into the placement slot 11, it is ensured that both sub-slots 111 are completely sealed.

[0022] In one preferred embodiment, the first terminal 21 is a signal terminal, the second terminal 22 is a power terminal, and the resistor 24 is soldered between the corresponding signal terminal and the power terminal. In another preferred embodiment, such as... Figures 1 to 4 In this configuration, the first terminal 21 is a signal terminal, and the second terminal 22 is a ground terminal. A gap is left between the signal terminal and the ground terminal, and the resistor 24 is soldered between the corresponding signal terminal and the ground terminal within the gap.

[0023] In summary, the technical solution of this utility model can fully and effectively achieve the aforementioned objectives. Furthermore, the structure and functional principles of this utility model have been fully verified in the embodiments, achieving the expected effects and objectives. Without departing from the principles and essence of this utility model, various changes or modifications can be made to the embodiments. Therefore, this utility model includes all substitutions within the scope mentioned in the patent application claims, and any equivalent changes made within the scope of this patent application are within the scope of the patent application.

Claims

1. A waterproof connector with built-in resistance, comprising an insulating body, a terminal group disposed on the insulating body, and a housing disposed outside the insulating body, characterized in that, The terminal group includes at least a pair of first terminals, a pair of second terminals, and a pair of third terminals. A resistor is soldered between one first terminal and one second terminal, and another resistor is soldered between the other first terminal and the other second terminal. A first pad connected to one end of the resistor is formed on the first terminal, and a second pad connected to the other end of the resistor is formed on the second terminal. An insulating body is provided with a mounting groove, and the two resistors and the first and second pads connected to the two ends of the resistors are placed in the mounting groove. The mounting groove is also filled with sealant to seal the inside of the mounting groove and the gap around the two resistors.

2. The waterproof connector with built-in resistor according to claim 1, characterized in that: The mounting slot includes two side-by-side mounting slots, with two resistors respectively located in the two mounting slots and connected to the first pad of the first terminal and the second pad of the second terminal.

3. The waterproof connector with built-in resistor according to claim 2, characterized in that: Each slot has a front cutout and a rear cutout. The first pad is inserted into the front cutout and connected to one end of the resistor, and the second pad is inserted into the rear cutout and connected to the other end of the resistor.

4. The waterproof connector with built-in resistor according to claim 2, characterized in that: The placement slot is equipped with a partition, which divides the placement slot into two sub-slots. The partition is provided with an opening for connecting the two sub-slots and for the flow of sealant.

5. The waterproof connector with built-in resistor according to claim 1, characterized in that: The first terminal is a signal terminal, and the second terminal is a power terminal. A resistor is soldered between the corresponding signal terminal and the power terminal.

6. The waterproof connector with built-in resistor according to claim 1, characterized in that: The first terminal is a signal terminal, and the second terminal is a ground terminal. The resistor is soldered between the corresponding signal terminal and the ground terminal.

Images