Contact element and composite butt joint type connector

Abstract

The invention provides a contact piece and a composite butt joint type connector. The contact piece comprises a signal terminal, a medium supporting piece and a grounding terminal. The signal terminal comprises a signal elastic arm part, a first connecting part and a bending clamping part which are connected in sequence, and the bending clamping part forms a signal clamping area; the medium supporting piece is coated and formed on the first connecting part; the grounding terminal comprises a grounding elastic arm part, a winding part and a plurality of grounding clamping parts which are connected in sequence, the winding part wraps the peripheral wall of the medium supporting piece, the grounding clamping parts are arranged at intervals in the circumferential direction of the winding part, a grounding clamping cavity is defined by the grounding clamping parts jointly, and the bending clamping part is located in the grounding clamping cavity; the contact surface of the signal elastic arm part and the contact surface of the grounding elastic arm part are parallel to each other, so that the contact can simultaneously meet functions which can only be realized by two independent connectors, precious layout space on a circuit board is greatly saved, the occupied space is small, and the contact conforms to the development trend of miniaturization, lightness and thinness of electronic equipment.

Description

Technical Field

[0001] This invention relates to the technical field of connectors, and in particular to a contact element and a composite mating connector. Background Technology

[0002] With the development of high-performance computing, millimeter-wave communication, chip testing platforms, server interconnects and high-speed measurement equipment, the demand for high bandwidth, low crosstalk, small size and high integration of system interfaces is constantly increasing.

[0003] However, existing system interfaces have multiple signal, ground, and control ports, requiring multiple connectors to be distributed across the system interface. In addition, each connector is a single-function connector. For example, a board-to-board connector is only responsible for connecting two circuit boards; a wire-to-board connector is only responsible for connecting a cable and a circuit board. This makes the system more complex and also results in a larger space occupation problem. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a contact element and composite mating connector with a simpler system and smaller space occupation.

[0005] The objective of this invention is achieved through the following technical solution: A contact element, comprising: The signal terminal includes a signal spring arm, a first connecting part, and a bending clamping part connected in sequence, wherein the bending clamping part forms a signal clamping area; A medium support component is overmolded onto the first connecting portion; The grounding terminal includes a grounding spring arm, a winding part, and a plurality of grounding clamping parts connected in sequence. The winding part covers the outer peripheral wall of the dielectric support member. The plurality of grounding clamping parts are arranged at intervals along the circumference of the winding part. The plurality of grounding clamping parts together form a grounding clamping cavity. The bending clamping part is located in the grounding clamping cavity. The contact surface of the signal spring arm is parallel to the contact surface of the grounding spring arm.

[0006] In one embodiment, there are two grounding projectile arms, namely a first grounding projectile arm and a second grounding projectile arm, which are located on both sides of the signal projectile arm.

[0007] In one embodiment, the first grounding spring arm is connected to the winding part and together forms a first bending groove area, and the second grounding spring arm is connected to the winding part and together forms a second bending groove area. Both the first bending groove area and the second bending groove area are disposed on one side of the signal spring arm.

[0008] In one embodiment, the contact surface of the signal flare arm and the contact surface of the grounding flare arm are located on the same plane; and / or, In one embodiment, the signal terminal is a one-piece molded structure; and / or, In one embodiment, the grounding terminal is a one-piece molded structure.

[0009] In one embodiment, the winding portion includes a plurality of connecting pieces connected circumferentially along the outer peripheral wall of the medium support member. There is a bending angle between any two adjacent connecting pieces. One of the connecting pieces at both ends of the winding portion forms a lug, and the other connecting piece at both ends of the winding portion forms a slot. The lug is engaged in the slot.

[0010] In one embodiment, the bending clamping portion includes a fixing portion, a first bending portion and a second bending portion respectively connected to both sides of the fixing portion, and the signal clamping area is formed between the bending protrusion of the first bending portion and the bending protrusion of the second bending portion; the fixing portion is connected to the first connecting portion.

[0011] In one embodiment, the fixing part is connected to the first bending part and together form a third bending groove area, the fixing part is connected to the second bending part and together form a fourth bending groove area, and the third bending groove area and the fourth bending groove area are disposed opposite to each other.

[0012] A composite mating connector includes a circuit board, a housing, and a contact element as described in any of the above embodiments. The housing has a slot and a retaining groove. The winding portion is located in the slot and is inserted into the housing. The circuit board is located in the retaining groove. At least one side of the circuit board has a signal gold finger and a ground gold finger. The signal spring arm elastically abuts against the signal gold finger, and the ground spring arm elastically abuts against the ground gold finger.

[0013] In one embodiment, the composite mating connector further includes a fixing plate, and the housing also has a fixing groove. The fixing groove and the locking plate groove are located on the same side of the housing, and the fixing plate is inserted into the fixing groove. A signal limiting groove and a grounding limiting groove are formed on the side of the fixing plate adjacent to the circuit board. A portion of the signal spring arm is located in the signal limiting groove, and a portion of the grounding spring arm is located in the grounding limiting groove.

[0014] In one embodiment, there are multiple contacts, and the multiple contacts are arranged in at least one row. The grounding terminal of each contact also includes an abutment tab connected to one side of the winding portion. The abutment tab of the grounding terminal of any two adjacent contacts in the same row elastically abuts against the winding portion of the grounding terminal of the other contact.

[0015] Compared with the prior art, the present invention has at least the following advantages: 1. At one end of the contact, a signal clamping area is formed by the bending clamping part, and multiple ground clamping parts are spaced apart circumferentially along the winding part, forming a ground clamping cavity. The bending clamping part is located inside the ground clamping cavity, meaning that multiple ground clamping parts are arranged around the bending clamping part, making one end of the contact a coaxial mating interface. At the other end of the contact, the contact surfaces of the signal spring arm and the ground spring arm are parallel to each other, allowing the signal spring arm to make elastic contact with the signal gold fingers of the circuit board, and the ground spring arm to make elastic contact with the ground gold fingers of the circuit board. This makes the other end of the contact a gold finger plug-in interface of the circuit board. In this way, the contact can simultaneously meet the functions that would otherwise require two independent connectors, greatly saving valuable layout space on the circuit board, occupying less space, and conforming to the development trend of miniaturization and thinning of electronic devices.

[0016] 2. The above-mentioned contact components eliminate the need to design two independent connection and fixing schemes for two different types of connections. That is, the contact components provide two connection paths, which greatly improves the flexibility and simplicity of the system design and makes the system simpler.

[0017] 3. Since the contacts can be compatible with two different types of connections, the number of connectors themselves is reduced, and the surrounding fasteners and assembly process are also simplified, thereby reducing the overall material and assembly costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a composite mating connector according to one embodiment; Figure 1a for Figure 1 A partial schematic diagram of the composite mating connector shown; Figure 2 for Figure 1 An exploded view of the composite mating connector shown. Figure 3 for Figure 2 A schematic diagram of the contacts of the composite mating connector shown. Figure 4 for Figure 3 An exploded view of the contact components shown. Figure 5 for Figure 2 A schematic diagram of the housing of the composite mating connector shown from another perspective; Figure 6 for Figure 5 A schematic diagram of the casing from another perspective; Figure 7 This is a schematic diagram of a contact element according to another embodiment; Figure 8 for Figure 2 A schematic diagram of the mounting plate of the composite mating connector is shown. Detailed Implementation

[0020] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] This application provides a contact element, including a signal terminal, a dielectric support, and a ground terminal; and / or, the signal terminal includes a signal spring arm, a first connecting portion, and a bending clamping portion connected in sequence; and / or, the bending clamping portion forms a signal clamping area; and / or, the dielectric support is formed over the first connecting portion; and / or, the ground terminal includes a ground spring arm, a winding portion, and a plurality of ground clamping portions connected in sequence; and / or, the winding portion covers the outer peripheral wall of the dielectric support; and / or, the plurality of ground clamping portions are spaced apart circumferentially along the winding portion; and / or, the plurality of ground clamping portions together form a ground clamping cavity; and / or, the bending clamping portion is located within the ground clamping cavity; and / or, the contact surface of the signal spring arm is parallel to the contact surface of the ground spring arm.

[0024] For one end of the contact, a signal clamping area is formed by the bending clamping part, and multiple ground clamping parts are arranged circumferentially along the winding part, forming a ground clamping cavity. The bending clamping part is located inside the ground clamping cavity, meaning that multiple ground clamping parts are arranged around the bending clamping part, making one end of the contact a coaxial mating interface. For the other end of the contact, the contact surfaces of the signal spring arm and the ground spring arm are parallel to each other, allowing the signal spring arm to make elastic contact with the signal gold fingers of the circuit board, and the ground spring arm to make elastic contact with the ground gold fingers of the circuit board. This makes the other end of the contact a gold finger plug-in interface of the circuit board. In this way, the contact can simultaneously meet the functions that would otherwise require two independent connectors, greatly saving valuable layout space on the circuit board, occupying less space, and conforming to the development trend of miniaturization and thinning of electronic devices.

[0025] The aforementioned contact eliminates the need for designing two separate connection and fixing schemes for two different types of connections. The contact provides two connection paths, significantly improving the flexibility and simplicity of the system design, making the system more streamlined. Because the contact is compatible with two different types of connections, the number of connectors is reduced, and the surrounding fixing components and assembly process are also simplified, thereby lowering overall material and assembly costs.

[0026] To better understand the technical solution and beneficial effects of this application, the following detailed description is provided in conjunction with specific embodiments: like Figures 1 to 6 As shown, a composite mating connector 10 of one embodiment includes a circuit board 100, a housing 200, and contacts 300. In one embodiment, the contacts 300 include a signal terminal 310, a dielectric support 320, and a ground terminal 330.

[0027] The signal terminal 310 includes a signal spring arm 312, a first connecting part 314 and a bending clamping part 316 connected in sequence. The bending clamping part 316 forms a signal clamping area 3162, which is used to clamp the signal terminal 310 of the coaxial connector, so that the signal terminal 310 and the signal clamping area 3162 can be elastically plugged and unplugged.

[0028] In one embodiment, the media support 320 is overmolded onto the first connecting portion 314, thereby assembling and fixing the first connecting portion 314 to the media support 320. In one embodiment, the media support 320 is overmolded onto the first connecting portion 314 using an injection molding process, thereby ensuring a good overmolding of the media support 320 onto the first connecting portion 314. In other embodiments, the media support 320 is also overmolded onto the first connecting portion 314 using other processes.

[0029] In one embodiment, the grounding terminal 330 includes a grounding spring arm 332, a winding portion 334, and a plurality of grounding clamping portions 336 connected in sequence. The winding portion 334 covers the outer peripheral wall of the dielectric support member 320, fixing the winding portion 334 to the outer peripheral wall of the dielectric support member 320. The plurality of grounding clamping portions 336 are spaced apart circumferentially along the winding portion 334, and together form a grounding clamping cavity. The bent clamping portion 316 is located within the grounding clamping cavity, and the plurality of grounding clamping portions 336 abut against the outer peripheral wall of the shielding shell of the coaxial connector. In this embodiment, the plurality of grounding clamping portions 336 form a grounding clamping group, which surrounds the bent clamping portion 316, enabling the contact member 300 to be plugged and unplugged into the coaxial connector.

[0030] In one embodiment, the contact surface 3120 of the signal flare arm 312 and the contact surface 3320 of the grounding flare arm 332 are parallel to each other, so that the signal flare arm 312 makes elastic contact with the signal gold finger 102 of the circuit board 100, and the grounding flare arm 332 makes elastic contact with the grounding gold finger 104 of the circuit board 100, thereby forming the gold finger plug-in interface of the circuit board 100 at the other end of the contact member 300.

[0031] In one embodiment, the housing 200 has a slot 202 and a card slot 204. The winding portion 334 is located in the slot 202 and is inserted into the housing 200, allowing the contact 300 to be plugged into and unplugged into the housing 200. The circuit board 100 is located in the card slot 204. At least one side of the circuit board 100 has a signal gold finger 102 and a ground gold finger 104. The signal spring arm 312 elastically abuts against the signal gold finger 102, and the ground spring arm 332 elastically abuts against the ground gold finger 104.

[0032] The aforementioned composite mating connector 10 and its contact 300, for one end of the contact 300, since the bending clamping portion 316 forms a signal clamping area 3162, and since multiple ground clamping portions 336 are arranged circumferentially along the winding portion 334, the multiple ground clamping portions 336 together form a ground clamping cavity, and the bending clamping portion 316 is located inside the ground clamping cavity, that is, the multiple ground clamping portions 336 are arranged around the bending clamping portion 316, so that one end of the contact 300 forms a coaxial mating interface; for the other end of the contact 300, since the signal spring arm portion 312... The contact surface and the contact surface of the grounding spring arm 332 are parallel to each other, so that the signal spring arm 312 makes elastic contact with the signal gold finger 102 of the circuit board 100, and the grounding spring arm 332 makes elastic contact with the grounding gold finger 104 of the circuit board 100. This makes the other end of the contact 300 form the gold finger plug-in interface of the circuit board 100. In this way, the contact 300 can simultaneously meet the functions that would otherwise require two independent connectors, greatly saving valuable layout space on the circuit board 100, occupying less space, and conforming to the development trend of miniaturization and thinning of electronic devices.

[0033] Furthermore, the aforementioned contact 300 eliminates the need for designing two separate connection and fixing schemes for the two different types of connections. In other words, contact 300 provides two connection paths, greatly improving the flexibility and simplicity of the system design and simplifying the system. Because contact 300 is compatible with two different types of connections, the number of connectors themselves is reduced, and the surrounding fixing components and assembly process are also simplified, thereby reducing overall material and assembly costs.

[0034] like Figure 2 , Figure 5 and Figure 6 As shown, further, there are multiple contacts 300 and multiple slots 202. The winding portions 334 of the grounding terminals 330 of the multiple contacts 300 are inserted into the multiple slots 202 in a one-to-one correspondence, so that the composite mating connector 10 can realize multiple signal transmission.

[0035] like Figures 3 to 4As shown, in one embodiment, there are two grounding arms 332, namely a first grounding arm 332a and a second grounding arm 332b. The first and second grounding arms are located on both sides of the signal arm 312, so that each contact 300 forms a GSG structure with a signal terminal 310 (S) and ground terminals (G) distributed on both sides of the signal terminal 310. That is, a coplanar waveguide structure is adopted to provide a stable local return path, suppress crosstalk, maintain a constant characteristic impedance (e.g., 50Ω) control, and excellent high-frequency performance. In other words, the signal line is tightly surrounded by grounding wires on both sides, forming an "electromagnetic shielding chamber", which can effectively prevent signal energy from radiating outward and also prevent external electromagnetic interference from entering. This allows multiple coplanar waveguides to be arranged very closely together (forming a high-density array) with very little mutual interference. In this embodiment, the first and second grounding arms are symmetrically arranged with respect to the plane containing the center line of the signal arm 312.

[0036] like Figures 3 to 4 As shown, further, the characteristic impedance value of each contact 300 is in the range of 45Ω~55Ω, so that the characteristic impedance value of each contact 300 is controlled within the range of 50Ω±10%, thereby making the characteristic impedance value of each contact 300 relatively constant.

[0037] like Figures 3 to 4 As shown, in one embodiment, the first grounding spring arm 332a is connected to the winding portion 334 and together forms a first bending groove area, and the second grounding spring arm 332b is connected to the winding portion 334 and together forms a second bending groove area. Both the first and second bending groove areas are positioned towards one side of the signal flare arm 312, making the contact member 300 more compact and space-saving. In this embodiment, the bending angles of both the first and second bending groove areas are 90°, allowing both the first and second grounding spring arms to be arranged parallel to the signal flare arm 312.

[0038] like Figures 3 to 4As shown, in one embodiment, the contact surface of the signal flare arm 312 and the contact surface of the grounding flare arm 332 are located on the same plane, allowing them to better abut against the same surface of the circuit board 100. In other embodiments, the contact surfaces of the signal flare arm 312 and the grounding flare arm 332 are not limited to being on the same plane. For example, there may be a height difference between the contact surfaces of the signal flare arm 312 and the grounding flare arm 332 within a predetermined range, meaning they may not be on the same plane. And / or, like Figures 3 to 4 As shown, in one embodiment, the signal terminal 310 is a one-piece molded structure, making its structure more compact; in this embodiment, the signal terminal 310 is a one-piece bent-formed structure. Specifically, the signal terminal 310 is integrally formed by a bending process. And / or, like Figures 3 to 4 As shown, in one embodiment, the grounding terminal 330 is a one-piece molded structure, making its structure more compact. In this embodiment, the grounding terminal 330 is a one-piece bent structure. Specifically, the grounding terminal 330 is integrally formed by a bending process.

[0039] like Figures 3 to 4 As shown, further, a signal reinforcing rib 3122 is provided on the bent back of the signal flare arm 312, so that the contact surface of the signal flare arm 312 and the signal gold finger 102 are more stable, and the contact resistance generated by the contact surface of the signal flare arm 312 and the signal gold finger 102 is more stable, providing consistent contact resistance and contact feel, and extending the service life of the contact 300 in the plug-in connection between the composite mating connector 10 and the circuit board 100.

[0040] like Figures 3 to 4 As shown, the bent back of the grounding spring arm 332 is further provided with a grounding reinforcing rib 3322, which makes the contact surface of the grounding spring arm 332 and the grounding gold finger 104 more stable. This makes the contact resistance generated by the contact surface of the grounding spring arm 332 and the grounding gold finger 104 more stable, providing consistent contact resistance and contact feel, and extending the service life of the contact 300 in the plug-in connection between the composite mating connector 10 and the circuit board 100.

[0041] like Figure 4 or Figure 7As shown, in one embodiment, the winding portion 334 includes a plurality of connecting pieces 3344 sequentially connected circumferentially along the outer peripheral wall of the medium support 320. A bending angle exists between any two adjacent connecting pieces. One connecting piece at each end of the winding portion 334 forms a lug 334a, and the other connecting piece at each end of the winding portion 334 forms a slot 334b. The lug engages with the slot, allowing the winding portion 334 to extend along the outer peripheral wall of the medium support 320 and reliably cover and fix it to the medium support 320. In this embodiment, the cross-section of the outer peripheral wall of the medium support 320 is polygonal, and there are rounded corners on adjacent sides, allowing the winding portion 334 to extend along the outer peripheral wall of the medium support 320 and reliably fit and conform to the outer surface of the medium support 320 for secure covering and fixing.

[0042] like Figure 4 As shown, the surface of the dielectric support 320 is further provided with a weight-reducing groove 321, which reduces the weight of the contact 300 while maintaining the signal stability of the contact 300, thereby making the entire composite mating connector 10 lighter.

[0043] like Figure 4 As shown, the surface of the medium support 320 is further formed with a pressing groove 323, the winding portion 334 is formed with a pressing opening 3341, the pressing opening 3341 is formed with a pressing ear 3343, the pressing ear and the inner wall of the pressing groove form a clearance gap, the pressing ear is used to be embedded in the pressing groove, so that the winding portion 334 and the medium support 320 are reliably fixedly connected.

[0044] like Figure 4 As shown, in one embodiment, the bending clamping portion 316 includes a fixing portion 316a, a first bending portion 316b, and a second bending portion 316c respectively connected to both sides of the fixing portion. The signal clamping area 3162 is formed between the bending protrusions of the first bending portion and the bending protrusions of the second bending portion, so that the first bending portion and the second bending portion are elastically clamped together on the signal terminal 310. In this embodiment, the fixing portion is connected to the first connecting portion 314, so that the bending clamping portion 316 forms the signal clamping area 3162. In this embodiment, the bending clamping portion 316 is integrally bent by a bending process. Further, the first connecting portion 314 has embedded grooves 3147 formed on both sides to prevent the first connecting portion 314 from detaching from the dielectric support member 320, so that the dielectric support member 320 is reliably covered and fixed to the first connecting portion 314.

[0045] In one embodiment, the fixing part is connected to the first bending part and together they form a third bending groove area, and the fixing part is connected to the second bending part and together they form a fourth bending groove area, with the third bending groove area and the fourth bending groove area being disposed opposite to each other. In this embodiment, the bending angles of both the third bending groove area and the fourth bending groove area are 90°, so that the first bending part and the second bending part are arranged parallel to each other, and both the first bending part and the second bending part are arranged perpendicular to the fixing part.

[0046] like Figure 2 and Figure 8 As shown, in one embodiment, the composite mating connector 10 further includes a fixing plate 400, and the housing 200 also forms a fixing groove 207. The fixing groove 207 and the locking groove 204 are located on the same side of the housing 200, and the fixing plate 400 is inserted into the fixing groove 207. The side of the fixing plate 400 adjacent to the circuit board 100 has a signal limiting groove 402 and a grounding limiting groove 404. A portion of the signal spring arm 312 is located in the signal limiting groove, and a portion of the grounding spring arm 332 is located in the grounding limiting groove, so that the fixing plate 400 can fix and limit the signal spring arm 312 and the grounding spring arm 332.

[0047] like Figure 2 , Figure 5 and Figure 6As shown, in one embodiment, there are multiple contacts 300, and the multiple contacts 300 are arranged in at least one row. The grounding terminal 330 of each contact 300 also includes an abutment tab 335 connected to one side of the winding portion 334. The abutment tab 335 of the grounding terminal 330 of any two adjacent contacts 300 in the same row elastically abuts against the winding portion 334 of the grounding terminal 330 of the other contact 300, so that the grounding terminals 330 of two adjacent contacts 300 in the same row are in contact with each other. In this way, the contacts 300 in the same row are designed to share a common ground (all ground terminals are interconnected), forming a unified ground plane, which makes the overall grounding consistency higher, the return path equivalent to the same, and the coupling between contacts 300 more controllable, further reducing the crosstalk and ground potential difference between two adjacent contacts 300. In this embodiment, each contact 300 has two grounding spring arms 332 for its grounding terminal 330. The two grounding spring arms 332 are a first grounding spring arm and a second grounding spring arm, respectively. The first grounding spring arm and the second grounding spring arm are located on both sides of the signal spring arm 312. That is, each contact 300 adopts a coplanar waveguide structure. In addition, the grounding terminals 330 of two adjacent contacts 300 located in the same row are in contact with each other, so that multiple contacts 300 can be densely arranged, which further improves the compactness of the composite mating connector 10. At the same time, the contacts 300 can provide a stable local return path, suppress crosstalk, control impedance, and have excellent high-frequency performance.

[0048] like Figure 4 As shown, the abutting tab 335 further includes an extension portion 3352 and a raised spring tab 3354. The extension portion 3352 extends outward from one end of the winding portion 334. One end of the raised spring tab 3354 is fixed to the extension portion 3352, and the other end of the raised spring tab is bent, so that the raised spring tab can better elastically abut against the outer wall of the winding portion of the adjacent contact member, so that the grounding of the two adjacent contact members can make mutual contact.

[0049] like Figure 2 , Figure 5 and Figure 6As shown, further, the multiple contact elements 300 are distributed in a rectangular array, that is, the multiple contact elements 300 are arranged in at least two rows, forming n rows of contact element groups, namely the first row of contact element groups, the second row of contact element groups, ..., the nth row of contact element groups, where n is an integer greater than or equal to 2. Each row of contact element groups includes m contact elements 300 arranged side by side, where m is a positive integer, making the arrangement of the multiple contact elements 300 relatively dense. In this embodiment, each contact element 300 includes a horizontal center line and a vertical center line, and the horizontal center lines of two adjacent contact elements 300 in the same row of contact element groups are collinear. The horizontal center line is parallel to the length direction of the housing 200 (i.e., parallel to the X-axis direction), and the vertical center line is parallel to the width direction of the housing 200 (i.e., parallel to the Y-axis direction).

[0050] like Figure 2 , Figure 5 and Figure 6 As shown, further, the vertical center lines of adjacent contacts 300 in adjacent rows of contact groups are staggered, meaning there is an interlacing distance between the vertical center lines of adjacent contacts 300 in adjacent rows of contact groups. Adjacent contacts 300 in the same row of contact groups also have a lateral spacing. This staggered distribution of adjacent contacts 300 in adjacent rows of contact groups reduces the space occupied by adjacent contacts 300 in the housing 200 while maintaining the same lateral spacing. Consequently, the arrangement of multiple contacts 300 is more dense, employing a high-density matrix arrangement, significantly increasing the terminal density per unit area of ​​the housing 200. In this embodiment, the number of contacts 300 is 72, enabling the composite mating connector 10 to achieve 72 electrical contact points.

[0051] Furthermore, the lateral spacing is 0.3mm~0.8mm. Compared with traditional connectors, the spacing between two adjacent contacts 300 of the above-mentioned composite mating connector 10 is smaller, which makes the distribution of multiple contacts 300 more dense.

[0052] like Figure 2 , Figure 5 and Figure 6 As shown, in one embodiment, multiple contacts 300 are arranged in a rectangular array, which has the advantages of smaller footprint, shorter wiring path, more uniform signal transmission length and suitability for highly integrated modular devices compared to the linear arrangement of existing technologies. By integrating multiple high-speed signals, ground return current and control signals into a compact structure, system wiring space can be saved, modular interface design can be provided, costs can be reduced, material management can be simplified, assembly complexity can be reduced, signal path consistency can be unified, and high-speed integrity can be improved.

[0053] like Figure 2 , Figure 5 and Figure 6 As shown, further, n is greater than or equal to 2. In this embodiment, a gold finger array group is formed on the surface of the circuit board 100. The gold finger array group includes two gold finger rows, namely a first gold finger row group and a second gold finger row group. The first gold finger row group includes m first signal gold fingers 102 and 2m first ground gold fingers 104. Two first ground gold fingers 104 are respectively provided on both sides of each first signal gold finger 102 to form a first gold finger group unit. The second gold finger row group includes m second signal gold fingers 102 and 2m second ground gold fingers 104. Two second ground gold fingers 104 are respectively provided on both sides of each second signal gold finger 102 to form a second gold finger group unit. in Figure 3 This is a schematic diagram of contact element 300 in the first row of contact element groups. Figure 7 This is a schematic diagram of the contact 300 of the second row of contact groups; the length of the signal spring arm 312 of the signal terminal 310 of each contact 300 of the first row of contact groups is greater than the length of the signal spring arm 312 of the signal terminal 310 of each contact 300 of the second row of contact groups; the length of the ground spring arm 332 of the ground terminal 330 of each contact 300 of the first row of contact groups is greater than the length of the ground spring arm 332 of the ground terminal 330 of each contact 300 of the second row of contact groups. The signal spring arm 312 of the signal terminal 310 of each contact 300 in the first row of contact groups elastically abuts against the first signal gold finger 102 of the corresponding first gold finger group unit on the first side of the circuit board 100. The ground spring arm 332 of the ground terminal 330 of each contact 300 in the first row of contact groups elastically abuts against the first ground gold finger 104 of the corresponding first gold finger group unit on the first side. The signal spring arm 312 of the signal terminal 310 of each contact 300 in the second row of contact groups elastically abuts against the second signal gold finger 102 of the corresponding second gold finger group unit on the first side of the circuit board 100. The ground spring arm 332 of the ground terminal 330 of each contact 300 in the second row of contact groups elastically abuts against the second ground gold finger 104 of the corresponding second gold finger group unit on the first side. This allows the multiple contacts 300 of the composite mating connector 10 to achieve a denser layout, while making the structure of the composite mating connector 10 more compact.

[0054] Specifically, n equals 4. Gold finger arrays are formed on both sides of the circuit board 100. Each gold finger array includes two gold finger rows, namely a first gold finger row and a second gold finger row. The first gold finger row includes m first signal gold fingers 102 and 2m first ground gold fingers 104. Each first signal gold finger 102 has two first ground gold fingers 104 on each side to form a first gold finger group unit. The second gold finger row includes m second signal gold fingers 102 and 2m second ground gold fingers 104. Each second signal gold finger 102 has two second ground gold fingers 104 on each side to form a second gold finger group unit. The first row of contact groups and the second row of contact groups are located on the first side of the circuit board 100, and the third row of contact groups and the fourth row of contact groups are located on the second side of the circuit board 100. in Figure 3 This is a schematic diagram of contact element 300 in the first or fourth row of contact elements. Figure 7 This is a schematic diagram of the contact 300 in the second or third row of contact groups; further, the length of the signal spring arm 312 of the signal terminal 310 of each contact 300 in the first row of contact groups is greater than the length of the signal spring arm 312 of the signal terminal 310 of each contact 300 in the second row of contact groups; the length of the ground spring arm 332 of the ground terminal 330 of each contact 300 in the first row of contact groups is greater than the length of the ground spring arm 332 of the ground terminal 330 of each contact 300 in the second row of contact groups. The signal spring arm 312 of the signal terminal 310 of each contact 300 in the first row of contact groups elastically abuts against the first signal gold finger 102 of the corresponding first gold finger group unit on the first side of the circuit board 100; the ground spring arm 332 of the ground terminal 330 of each contact 300 in the first row of contact groups elastically abuts against the first ground gold finger 104 of the corresponding first gold finger group unit on the first side; the signal spring arm 312 of the signal terminal 310 of each contact 300 in the second row of contact groups elastically abuts against the second signal gold finger 102 of the corresponding second gold finger group unit on the first side of the circuit board 100; the ground spring arm 332 of the ground terminal 330 of each contact 300 in the second row of contact groups elastically abuts against the second ground gold finger 104 of the corresponding second gold finger group unit on the first side.

[0055] Furthermore, the length of the signal spring arm 312 of the signal terminal 310 of each contact 300 in the third row of contact groups is less than the length of the signal spring arm 312 of the signal terminal 310 of each contact 300 in the fourth row of contact groups; the length of the ground spring arm 332 of the ground terminal 330 of each contact 300 in the third row of contact groups is less than the length of the ground spring arm 332 of the ground terminal 330 of each contact 300 in the fourth row of contact groups. The signal spring arm 312 of the signal terminal 310 of each contact 300 in the fourth row of contact groups elastically abuts against the first signal gold finger 102 of the corresponding first gold finger group unit on the second side of the circuit board 100; the ground spring arm 332 of the ground terminal 330 of each contact 300 in the fourth row of contact groups elastically abuts against the first ground gold finger 104 of the corresponding first gold finger group unit on the second side of the circuit board 100; the signal spring arm 312 of the signal terminal 310 of each contact 300 in the third row of contact groups elastically abuts against the second signal gold finger 102 of the corresponding second gold finger group unit on the second side of the circuit board 100; the ground spring arm 332 of the ground terminal 330 of each contact 300 in the third row of contact groups elastically abuts against the second ground gold finger 104 of the corresponding second gold finger group unit on the second side of the circuit board 100.

[0056] Compared with the prior art, the present invention has at least the following advantages: 1. For one end of the contact 300, since the bending clamping portion 316 forms a signal clamping area 3162, and since multiple grounding clamping portions 336 are arranged circumferentially along the winding portion 334, the multiple grounding clamping portions 336 together form a grounding clamping cavity. The bending clamping portion 316 is located inside the grounding clamping cavity, that is, the multiple grounding clamping portions 336 are arranged around the bending clamping portion 316, so that one end of the contact 300 forms a coaxial mating interface; for the other end of the contact 300, since the contact surface of the signal spring arm portion 312 and the grounding spring arm portion 3162 are mated together, the signal spring arm portion 3162 forms a signal clamping area 3162. The contact surfaces of the contacts 32 are parallel to each other, so that the signal spring arm 312 makes elastic contact with the signal gold finger 102 of the circuit board 100, and the ground spring arm 332 makes elastic contact with the ground gold finger 104 of the circuit board 100. This makes the other end of the contact 300 form the gold finger plug-in interface of the circuit board 100. In this way, the contact 300 can simultaneously meet the functions that would otherwise require two independent connectors, greatly saving valuable layout space on the circuit board 100, occupying less space, and conforming to the development trend of miniaturization and thinning of electronic devices.

[0057] 2. The aforementioned contact 300 eliminates the need to design two independent connection and fixing schemes for the two different types of connections. That is, the contact 300 provides two connection paths, which greatly improves the flexibility and simplicity of the system design and makes the system simpler.

[0058] 3. Since the contact 300 is compatible with two different types of connections, the number of connectors themselves is reduced, and the surrounding fasteners and assembly process are also simplified, thereby reducing the overall material cost and assembly cost.

[0059] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A contact element, characterized in that, include: The signal terminal includes a signal spring arm, a first connecting part, and a bending clamping part connected in sequence, wherein the bending clamping part forms a signal clamping area; A medium support component is overmolded onto the first connecting portion; The grounding terminal includes a grounding spring arm, a winding part, and a plurality of grounding clamping parts connected in sequence. The winding part covers the outer peripheral wall of the dielectric support member. The plurality of grounding clamping parts are arranged at intervals along the circumference of the winding part. The plurality of grounding clamping parts together form a grounding clamping cavity. The bending clamping part is located in the grounding clamping cavity. The contact surface of the signal spring arm is parallel to the contact surface of the grounding spring arm.

2. The contact element according to claim 1, characterized in that, The number of grounding projectile arms is two, namely a first grounding projectile arm and a second grounding projectile arm, which are located on both sides of the signal projectile arm.

3. The contact element according to claim 2, characterized in that, The first grounding missile arm is connected to the winding part and together forms a first bending groove area. The second grounding missile arm is connected to the winding part and together forms a second bending groove area. Both the first bending groove area and the second bending groove area are arranged facing one side of the signal missile arm.

4. The contact element according to claim 1, characterized in that, The contact surface of the signal flare arm and the contact surface of the grounding flare arm are located on the same plane; and / or, The signal terminal is a one-piece molded structure; and / or, The grounding terminal is a one-piece molded structure.

5. The contact element according to claim 1, characterized in that, The winding section includes a plurality of connecting pieces that are sequentially connected circumferentially along the outer peripheral wall of the medium support member. There is a bending angle between any two adjacent connecting pieces. One of the connecting pieces at both ends of the winding section forms a lug, and the other connecting piece at both ends of the winding section forms a slot. The lug is engaged in the slot.

6. The contact element according to claim 1, characterized in that, The bending clamping part includes a fixing part, a first bending part and a second bending part respectively connected to both sides of the fixing part, and the signal clamping area is formed between the bending protrusion of the first bending part and the bending protrusion of the second bending part; the fixing part is connected to the first connecting part.

7. The contact element according to claim 6, characterized in that, The fixing part is connected to the first bending part and together they form a third bending groove area. The fixing part is connected to the second bending part and together they form a fourth bending groove area. The third bending groove area and the fourth bending groove area are arranged opposite to each other.

8. A composite mating connector, characterized in that, The device includes a circuit board, a housing, and a contact element as described in any one of claims 1 to 7. The housing has a slot and a card slot. The winding portion is located in the slot and is inserted into the housing. The circuit board is located in the card slot. At least one side of the circuit board has a signal gold finger and a ground gold finger. The signal spring arm elastically abuts against the signal gold finger, and the ground spring arm elastically abuts against the ground gold finger.

9. The composite mating connector according to claim 8, characterized in that, It also includes a fixing plate, and the housing also has a fixing groove. The fixing groove and the locking plate groove are located on the same side of the housing, and the fixing plate is inserted into the fixing groove. The side of the fixing plate adjacent to the circuit board has a signal limiting groove and a grounding limiting groove. A portion of the signal spring arm is located in the signal limiting groove, and a portion of the grounding spring arm is located in the grounding limiting groove.

10. The composite mating connector according to claim 8, characterized in that, The number of the contacts is multiple, and the multiple contacts are arranged in at least one row. The grounding terminal of each contact also includes an abutting tab connected to one side of the winding portion. The abutting tab of the grounding terminal of one of any two adjacent contacts in the same row elastically abuts against the winding portion of the grounding terminal of the other contact.

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