A chip signal electrical connector

Abstract

The present invention relates to a chip-type signal electrical connector, comprising a plug and a socket with mating front ends, wherein the insulators of the plug and the socket are provided with at least one layer of axially extending signal holes for assembling chip-type pins / chip-type sockets; the tail of the socket insulator is connected to an insulating pressure plate for fixing and sealing the chip-type socket extending out of the insulator tail; the tails of the plug insulator and the socket insulating pressure plate are both stepped, and the tails of the layered chip-type pins and chip-type sockets are located on corresponding stepped surfaces and have exposed cable connection parts; the tail of the plug insulator and the outer side of the socket insulator are both injection-molded with a plastic shell, and the rear end of the plastic shell extends to the rear of the contact and cooperates with the outer sheath of the cable connected to the tail of the contact. The present invention solves the use requirements of fast, reliable and miniaturized connection, and has the characteristics of simple process, low cost, and easy mass production.

Description

Technical Field

[0001] The present invention relates to the technical field of signal connectors, and in particular to a sheet-type signal electrical connector. Background Art

[0002] Green transportation vehicles such as electric bicycles and electric scooters are becoming a mainstay of urban transportation due to their ease of use, compact size, and environmental friendliness. Signal connectors, as a key component of electric vehicle control systems, play a particularly important role. The miniaturization and intelligentization of electric bicycles are also placing higher demands on signal connectors. Future developments in signal connectors will focus on fast and reliable connections, miniaturization, and low cost.

[0003] The existing electric bicycle signal connector interfaces on the market are of many types and complex, with no unified standard formed, and the following problems exist: (1) The existing signal connectors are large in size, which does not conform to the miniaturization and intelligent development trend of electric vehicles; (2) The existing signal connectors use round pins and round holes, which have a complicated production process, high costs, and are not easy to achieve mass production. Summary of the Invention

[0004] The purpose of the present invention is to provide a new type of chip-type signal electrical connector, which adopts a chip-type contact structure, multiple chip contacts are forcibly installed in the holes of the insulator, and the tails are welded with wires and then plastic-sealed for integrated molding, so as to meet the requirements of fast, reliable connection and miniaturization.

[0005] The purpose of the present invention and the technical problems solved are achieved by adopting the following technical solutions. According to the present invention, a chip-type signal electrical connector includes a plug and a socket with mating front ends, wherein the plug and socket insulators are provided with at least one layer of axially extending signal holes for assembling chip-type pins / chip-type sockets; the tail of the socket insulator is connected to an insulating pressure plate for fixing and sealing the chip-type sockets extending out of the insulator tail; the tails of the plug insulator and the socket insulating pressure plate are both stepped, and the tails of the layered chip-type pins and chip-type sockets are located on the corresponding stepped surfaces and have exposed cable welding parts; the tail of the plug insulator and the outer side of the socket insulator are both injection-molded with a plastic shell, and the rear end of the plastic shell extends to the rear of the contact and matches the outer sheath of the cable welded to the tail of the contact.

[0006] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0007] In the aforementioned sheet-type signal electrical connector, the end of the insulator is in a bidirectional stepped shape.

[0008] In the aforementioned chip-type signal electrical connector, both the plug insulator and the socket insulator are provided with an annular groove for the plastic sealing material to flow into during the plastic sealing integration molding to improve the bonding force between the plastic sealing shell and the insulator.

[0009] In the aforementioned chip-type signal electrical connector, an annular rib is provided on the outer peripheral surface of the plug insulator, and an annular groove is provided in the plastic shell of the socket to achieve locking and waterproof sealing by interference fit with the annular rib.

[0010] In the aforementioned chip-type signal electrical connector, the front end of the annular rib is provided with a guide surface, and the mating surface of the plastic-sealed shell of the socket is provided with a guide surface that cooperates with the guide surface to achieve smooth mating between the two.

[0011] In the aforementioned sheet-type signal electrical connector, the insulating pressing plate and the socket insulator are fixed together by the cooperation of the bosses and the grooves on their connecting surfaces.

[0012] In the aforementioned chip-type signal electrical connector, the tail solder joints of the chip-type contacts are protected with glue after being welded to the cable, thereby preventing the solder joints from falling off during plastic-sealed one-piece molding and enhancing the tail seal.

[0013] In the aforementioned chip-type signal electrical connector, the chip-type jack adopts a double-sided cantilever beam structure that forms double-sided contact with the chip-type pin when inserted to achieve stable signal transmission.

[0014] The aforementioned chip-type signal electrical connector, wherein the chip-type pins and chip-type sockets are both locally electroplated, with the contact parts being gold-plated, the middle parts being nickel-plated, and the tail welding parts being tin-plated.

[0015] In the aforementioned sheet-type signal electrical connector, the plug and socket insulators have colors for identifying the number of cores in the product.

[0016] The present invention offers significant advantages and beneficial effects compared to existing technologies. By utilizing the aforementioned technical solution, the present invention's chip-type signal electrical connector achieves considerable technological advancement and practicality, and possesses broad industrial application value. It possesses at least the following advantages: The present invention's contacts are arranged in layers, and the soldering surfaces at the tails of the contacts in different layers can be staggered. This allows for layered soldering of the tails of the contacts in multi-hole connectors, increases the contact arrangement density, and significantly reduces the product's overall dimensions.

[0017] The chip jack of the present invention adopts a double-sided cantilever beam structure, and when the chip pin is inserted, double-sided contact is formed to realize the transmission of current signals. This structure has reliable performance and strong fatigue durability. Both the chip pin and the jack are provided with a barb structure, among which the chip jack is provided with a double layer of barbs to realize the stable installation of the contact parts. The tail ends of the chip pin and jack are also designed with welding knurling to facilitate the welding of cables.

[0018] In summary: The tail ends of the plug and socket of the present invention are both plastic-sealed and molded in an integrated manner with the cable, and the cable is directly connected to the corresponding position of the electric vehicle. When the two are plugged together, it is only necessary to hold the plastic shell and align the triangular arrows on the two plastic shells and insert them forcefully. After plugging in, the signal current is transmitted through the cable and the chip-type pin jack. When separating the plug and socket, it is only necessary to hold the tail ends of the plastic shells of the plug and socket respectively and pull them apart forcefully. The present invention solves the use requirements of fast, reliable and miniaturized connection. The new chip contact structure design also has the characteristics of simple process, low cost, and easy mass production, which is very beneficial to increasing production capacity and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the chip-type signal electrical connector of the present invention;

[0020] Figure 2 This is a cross-sectional view of a chip-type signal electrical connector plug according to the present invention;

[0021] Figure 3 This is a schematic diagram of the insulator of the sheet-type signal electrical connector plug of the present invention;

[0022] Figure 4 This is a cross-sectional view of the chip-type signal electrical connector socket of the present invention;

[0023] Figure 5 This is a schematic diagram of the insulator of the chip-type signal electrical connector socket of the present invention;

[0024] Figure 6 It is a schematic diagram of the plugging of the contacts of the chip-type signal electrical connector of the present invention.

[0025]

Main component symbol description

[0026] 1: Plug

[0027] 2: Socket

[0028] 3: Plug insulator

[0029] 4:Plug plastic shell

[0030] 5: Chip-type long pin

[0031] 6: Chip short pin

[0032] 7: Cable

[0033] 8: First annular groove

[0034] 9: Large chamfer

[0035] 10: Annular ribs

[0036] 11: Socket insulator

[0037] 12: Chip-type long jack

[0038] 13: Chip short jack

[0039] 14: Socket plastic shell

[0040] 15: Annular groove

[0041] 16: Second annular groove

[0042] 17: Insulation plate

[0043] 18: Keyway

[0044] 19: Chip pin

[0045] 20: chip jack

[0046] 21: Welding knurling

[0047] 22: Double barbs

[0048] 23: Cantilever

[0049] 24: Barb

[0050] 25: First step end face

[0051] 26: Anti-slip ribs

[0052] 27: Second step end face DETAILED DESCRIPTION

[0053] To further illustrate the technical means and effects of the present invention to achieve the predetermined purpose of the invention, the following is a detailed description of the specific implementation, structure, features and effects of the chip-type signal electrical connector proposed in accordance with the present invention, in conjunction with the accompanying drawings and preferred embodiments.

[0054] See also Figure 1-6 , which is a schematic diagram of the various components of the chip-type signal electrical connector of the present invention. The electrical connector comprises a plug 1 and a receptacle 2. The plug 1 comprises a plug insulator 3 and a plug plastic housing 4. The plug insulator is radially provided with at least one layer of axially extending signal holes. The insulator ends, each layer of signal holes, are stepped, with each layer of signal holes corresponding to a step. The upper portion of each stepped surface of the signal holes is open, leaving the insulator ends within each layer of holes open for cable connection. In this embodiment of the present invention, to reduce the size of the connector, the insulator ends are bidirectionally stepped.

[0055] Each layer of signal holes includes one or more signal holes. Each of these signal holes is forcibly installed with a blade pin, each with barbs on either side. After installation, the cable connection portion of the blade pin is exposed from the insulator. In this embodiment of the present invention, the cable connection portion of the blade pin is provided with weld knurling 21, but this is not limiting. The plug plastic housing 4 is injection molded onto the outside of the rear end of the plug insulator 3. The rear end of the plug plastic housing extends behind the contact element and mates with the cable sheath.

[0056] The socket 2 comprises a socket insulator 11, a plastic housing 14, and an insulating pressure plate 17. The socket insulator 11 is radially provided with at least one layer of axially extending signal apertures with open ends at the upper and lower portions. Each layer of signal apertures includes one or more signal apertures, each of which is fitted with a blade-type jack 20 with barbs on both sides.

[0057] After the blade jack is forcibly installed into the signal hole in the socket insulator, an insulating pressure plate, which is provided with a hole for the blade jack 20 to pass through, is buckled onto the rear end of the socket insulator to secure the rear end of the blade jack 20. The end of the insulating pressure plate is stepped, with each step corresponding to a signal hole. The signal holes on each step surface are all open, exposing the insulating pressure plate at the end of the blade jack 20. This exposed surface is welded to the cable, leaving the cable connection portion of the blade jack exposed. Furthermore, the rear end surfaces of the insulating pressure plates for adjacent blade jacks are not coplanar, facilitating welding of the rear ends of blade jacks 20 on different layers to the cable.

[0058] In this embodiment of the present invention, the portion of the blade jack used for welding to the cable is provided with welding knurling 21, facilitating rapid automated welding of the wires. The receptacle plastic housing 14 is injection molded onto the outside of the insulator, with the rear end of the housing extending behind the contacts and mating with the outer sheath of the cable.

[0059] In the embodiment of the present invention, the insulating pressing plate 17 and the socket insulator 11 are fixed to each other through the cooperation of the bosses and grooves on their contact surfaces, thereby fixing the tail of the contact, but the present invention is not limited thereto.

[0060] The following describes the specific implementation of the present invention in detail by taking a typical six-core product as an example; other numbers of cores have the same effect.

[0061] The plug 1 of the six-core connector comprises three long blade pins 5, three short blade pins 6, a plug insulator 3, a receptacle plastic housing 4, and a cable 7. First, the three long blade pins 5, each with barbs on both sides, are forcibly installed into the plug insulator 3, with their tails flush with the end face 27 of the second-level step. Then, the three short blade pins 6, each with barbs on both sides, are forcibly installed into the plug insulator, with their tails flush with the end face 25 of the first-level step. The cable 7 is then stripped and welded to the weld knurl 21 at the tail end of the blade pins 19. Finally, the connector is molded and integrally formed, with the tail end of the receptacle plastic housing 4 extending all the way to the outer sheath of the cable 7 to mate with it.

[0062] The plug insulator 3 is provided with an annular rib, which can cooperate with the plastic shell on the socket end when plugged in, forming an interference fit, thereby playing a role of locking and sealing.

[0063] The plug insulator 3 is further provided with a first annular groove 8 , into which the plastic material flows during the plastic-encapsulated integrated molding process, thereby improving the bonding force between the plastic-encapsulated shell and the insulator.

[0064] The bidirectional steps formed at the tail end of the plug insulator 3 include two first step end faces 25 and one second step end face 27, so that the welding surfaces of the tail ends of the contacts can be staggered in layers, which can realize layered welding of the tail ends of the contacts of the multi-hole connector, improve the arrangement density of the contacts, and greatly reduce the overall dimensions of the product.

[0065] After the chip pins are welded, glue is used to protect the solder joints at their tails to prevent the solder joints from falling off during the plastic-sealed integrated molding process, and to achieve better sealing of the tails.

[0066] The socket 2 of the six-core connector comprises three long blade-type jacks 12, three short blade-type jacks 13, a socket insulator 11, an insulating pressure plate 17, a socket plastic shell 14, and a cable 7. First, the three long blade-type jacks 12 with barbs on both sides are forcibly installed into the three holes in the middle layer of the socket insulator. Then, the three short blade-type jacks with barbs on both sides are forcibly installed into the holes on both sides of the socket insulator. Finally, the insulating pressure plate 17 is buckled into the rear end of the socket insulator 11 to fix the jacks in place.

[0067] The tail of the insulating pressure plate 17 is in a double-stepped shape. The tail end of the long sheet-type jack 12 is flush with the end face 27 of the second step, and the tail end of the short sheet-type jack 13 is flush with the end face 25 of the first step. As a result, the welding surfaces of the tail ends of the contacts can be staggered in layers, which can realize layered welding of the tail ends of the contacts of the multi-hole connector, improve the arrangement density of the contacts, and greatly reduce the overall dimensions of the product.

[0068] After stripping the cable, solder it to the knurled area at the end of the contact. The contact is then molded and sealed in a plastic mold. The end of the plastic shell extends all the way to the outer sheath of the cable to fit in. After welding, the contact is glued to protect the solder joints at the end to prevent them from falling off during the plastic molding process and to ensure a better seal at the end.

[0069] In another embodiment of the present invention, the tail of the contact is crimped to the cable, and the crimped portion is protected by glue.

[0070] The guide pins on the insulating pressure plate 17 fit into the grooves on the socket insulator, creating an interference fit. This secures the rear end of the blade jack to the insulating pressure plate and seals the rear end of the socket insulator. An annular groove 15 is provided within the plastic housing 14 of the socket. This groove mates with the annular rib 10 on the plug insulator at the plug end when mated, creating an interference fit and providing a locking and waterproof seal.

[0071] The socket insulator is provided with a second annular groove 16 , into which the plastic material flows during the plastic-encapsulated integrated molding process, thereby improving the bonding force between the plastic-encapsulated shell and the socket insulator.

[0072] In an embodiment of the present invention, the sheet-type jack adopts a double-sided cantilever beam structure, and when the sheet-type pin is inserted, double-sided contact is formed to realize the transmission of current signals. This structure has reliable performance and strong fatigue durability, and realizes stable installation of the contact piece in the insulator.

[0073] In the embodiment of the present invention, a keyway 18 extending in the axial direction is provided on the outer peripheral surface of the socket insulator, and a corresponding guide key is provided inside the plug insulator.

[0074] The chip pins and chip jacks are both partially electroplated, with the contact parts being gold-plated, the middle parts being nickel-plated, and the tail parts connecting to the cable being tin-plated, thereby greatly reducing costs while ensuring performance.

[0075] In the embodiment of the present invention, the tail of the plug and the socket are provided with anti-slip ribs 26 to facilitate the plug and the socket to be plugged in. The insulators of the plug and the socket are provided with different colors according to the number of cores to facilitate the quick distinction of products with different core numbers.

[0076] The annular rib of the plug insulator is provided with a large chamfer, and the mating surface of the socket plastic shell of the socket is also provided with a gently transitioned chamfer, so that the two can be smoothly plugged into each other.

[0077] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the present profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A sheet-type signal electrical connector, comprising a plug and a socket connected at the front end, characterized in that: The insulator of the plug and the socket is provided with at least one layer of signal holes extending in the axial direction for assembling the chip pins / chip jacks, and each layer has one or more signal holes; The tail of the socket insulator is connected to an insulating pressing plate for fixing and sealing the sheet-type jack extending out of the tail of the insulator; The tails of the plug insulator and the socket insulation pressure plate are both stepped, and the tails of the layered sheet-type pins and sheet-type jacks are located on the corresponding step surfaces and have exposed cable connection parts, and the tail end faces of the sheet-type pins and sheet-type jacks are flush with the tail end faces of the step surfaces on which they are located; The tail of the plug insulator and the outer side of the socket insulator are both injection molded with a plastic outer shell, and the rear end of the plastic outer shell extends to the rear of the contact and matches the outer skin of the cable connected to the tail of the contact; The exposed cable connection parts at the tail of the sheet-type pins and sheet-type jacks are both provided with welding knurling, so that the tail of the connector plug and socket can be connected to the tail cable through layered welding, and the cable connection parts between adjacent layers are staggered in the axial direction.

2. The chip-type signal electrical connector according to claim 1, wherein: The end of the insulator is in a bidirectional step shape.

3. The chip-type signal electrical connector according to claim 2, wherein: The plug insulator and the socket insulator are both provided with an annular groove for the plastic sealing material to flow into during the plastic sealing integration molding to improve the bonding force between the plastic sealing shell and the insulator.

4. The chip-type signal electrical connector according to claim 2, wherein: An annular rib is provided on the outer peripheral surface of the plug insulator, and an annular groove is provided in the plastic-sealed outer shell of the socket for interference fit with the annular rib to achieve locking, sealing and waterproofing.

5. The chip-type signal electrical connector according to claim 2, wherein: The insulating pressing plate and the socket insulator are fixed to each other through the cooperation of the boss and the groove on their connecting surface.

6. The chip-type signal electrical connector according to claim 2, wherein: After the sheet contact is connected to the cable, glue is used to protect the tail connection point to prevent the connection point from falling off during plastic sealing and to enhance the tail seal.

7. The chip-type signal electrical connector according to claim 2, wherein: The chip jack adopts a double-sided cantilever beam structure that forms double-sided contact with the chip pin when inserted to achieve stable signal transmission.

8. The chip-type signal electrical connector according to claim 1, wherein: The sheet-type jack and the sheet-type pin are both provided with barbs on both sides, and the tails are both provided with welding knurling; and double layers of barbs are provided on both sides of the sheet-type jack.

9. The chip-type signal electrical connector according to claim 1, wherein: The chip-type pins and chip-type sockets are both locally electroplated, with the contact parts being gold-plated, the middle parts being nickel-plated, and the tail connection parts being tin-plated.

10. The chip-type signal electrical connector according to claim 1, wherein: The plug and socket insulators described therein have colors for identifying the number of cores in the product.

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