Board-to-board small-spacing multi-band high-frequency electric connector

Abstract

The utility model provides a board-to-board small-spacing multi-band high-frequency electric connector, which comprises a socket and a plug which are mutually plugged, the socket comprises a socket body and a plurality of first terminals accommodated in the socket body, the plug comprises a plug body and a plurality of second terminals accommodated in the plug body, and the second terminals are connected with the socket body. The socket body and the plug body extend along the lengthwise direction, the second terminal comprises a main body arm, a bending arm which bends and extends upwards from the main body arm, and a mounting arm arranged below the main body arm, and the thickness of at least part of the bending arm along the front-back direction is smaller than that of the main body arm. The board-to-board small-spacing multi-band high-frequency electric connector provided by the utility model is smooth in transmission when transmitting high-frequency signals, and has the advantages of stable characteristic impedance, low signal loss and the like, thereby meeting the requirements of multiple high-frequency specifications.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to a board-to-board small-pitch multi-band high-frequency electrical connector. Background Technology

[0002] With the booming development of the electronics industry, the technological trends of electronic devices entering the high-speed digital field are: signal rise time is getting shorter and shorter, CPU clock frequency is getting faster and faster, the number of connector pins is increasing and the pitch is getting smaller and smaller. High frequency and high speed also bring a good user experience. Consumers also want better transmission and speed when using electronic devices. As a result, the demand for board electrical connectors for small pitch and multi-band boards has emerged.

[0003] In view of this, it is necessary to improve the existing high-frequency electrical connectors to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a board-to-board small-pitch multi-band high-frequency electrical connector with a higher transmission rate.

[0005] To achieve the above-mentioned utility model objectives, this utility model provides a board-to-board small-pitch multi-band high-frequency electrical connector, which includes a socket and a plug that are plugged into each other. The socket includes a socket body and a plurality of first terminals housed within the socket body. The plug includes a plug body and a plurality of second terminals housed within the plug body. Both the socket body and the plug body extend along the longitudinal direction. The second terminal includes a main arm, a bent arm that bends upward from the main arm, and a mounting arm disposed below the main arm. At least a portion of the bent arm has a thickness less than that of the main arm in the front-rear direction.

[0006] As a further improvement of this utility model, the first terminal includes two first cutting surfaces arranged opposite each other in the longitudinal direction and a first contact surface located between the two first cutting surfaces.

[0007] As a further improvement of this utility model, the first terminal includes a docking arm extending in a vertical direction and a fixing arm extending in a horizontal direction; the first contact surface is disposed on the docking arm.

[0008] As a further improvement of this utility model, the socket body is longitudinally elongated and recessed from top to bottom to form a longitudinally elongated insertion groove. The socket body includes a pair of first sidewalls surrounding the insertion groove and a first end wall connected to the longitudinal ends of the first sidewalls. A plurality of longitudinally arranged first slots are formed on the inner wall surface of the first sidewalls. The first cut surface abuts against the first slot and the first contact surface is exposed towards the insertion groove.

[0009] As a further improvement of this utility model, a plurality of longitudinally arranged windows are recessed on the outer wall surface of the first side wall of the socket body, and a plurality of through holes are provided in each window, the through holes penetrating the first side wall inward.

[0010] As a further improvement of this utility model, the second terminal includes two second cutting surfaces arranged opposite each other in the longitudinal direction and a second contact surface located between the two second cutting surfaces; the second contact surface is located on the bending arm.

[0011] As a further improvement of this utility model, the bending arm includes a first bending segment and a second bending segment that extend sequentially. The first bending segment is connected to the main arm, and the bending angles of the first bending segment and the second bending segment are opposite. The thickness of the second bending segment in the front-back direction is less than that of the first bending segment.

[0012] As a further improvement of this utility model, the second cutting surface of the main body arm of the second terminal is provided with protruding corner portions, which are symmetrically arranged.

[0013] As a further improvement of this utility model, the plug body includes a longitudinally elongated body portion and a mating protrusion formed by protruding upward from the body portion. The body portion has several receiving grooves that extend vertically through it, and the main arm is received in the receiving grooves. The second cutting surface of the main arm is in contact with the inner wall of the receiving groove.

[0014] As a further improvement of this utility model, the plug body includes a longitudinally elongated body portion and a mating protrusion formed by protruding upward from the body portion. The mating protrusion includes a pair of longitudinally elongated second sidewalls and a second end wall connected to the two longitudinal ends of the second sidewalls. The second sidewalls are provided with a plurality of longitudinally arranged second slots. The bent arm of the second terminal is accommodated in the second slot. The second cutting surface of the bent arm abuts against the inner wall of the second slot, and the second contact surface is exposed to the outside.

[0015] The beneficial effects of this utility model are as follows: The board-to-board small-pitch multi-band high-frequency electrical connector of this utility model has advantages such as stable characteristic impedance and low signal loss, because at least part of the thickness of the bent arm in the front-to-back direction is smaller than that of the main arm. Therefore, the bent arm is at least partially thinned, resulting in smooth transmission of high-frequency signals. This meets the requirements of multiple high-frequency specifications such as PCIe Gen 4, USB 3.2 Gen 2, DP 1.4 HBR 3, and HDMI 2.1. Furthermore, electronic devices such as computers have fast signal transmission speeds and high frequencies during operation, providing users with a better user experience. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the plug and socket of the plate-to-plate small-pitch multi-band high-frequency electrical connector of this utility model;

[0017] Figure 2 This is a schematic diagram of the socket structure in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the socket body in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the first terminal in this utility model;

[0020] Figure 5 This is a schematic diagram of the plug structure in this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the second terminal in this utility model;

[0022] Figure 7 This is a structural schematic diagram of the second terminal from another perspective in this utility model. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0024] like Figures 1 to 7 As shown, this utility model provides a board-to-board small-pitch multi-band high-frequency electrical connector 100, which includes a socket 10 and a plug 30 that are plugged into each other. The socket 10 includes a socket body 1 and a plurality of first terminals 2 housed in the socket body 1. The plug 30 includes a plug body 3 and a plurality of second terminals 4 housed in the plug body 3. The socket body 1 and the plug body 3 both extend in the longitudinal direction. The second terminal 4 includes a main arm 41, a bent arm 42 that bends upward from the main arm 41, and a mounting arm 43 disposed below the main arm 41. At least a portion of the bent arm 42 has a thickness less than that of the main arm 41 in the front-rear direction.

[0025] Because at least a portion of the bending arm 42 is thinner than the main arm 41 in the front-to-back direction, the bending arm 42 is at least partially thinned, resulting in smooth transmission of high-frequency signals. This provides advantages such as stable characteristic impedance and low signal loss, thus meeting the requirements of multiple high-frequency specifications such as PCIE GEN4, USB 3.2 GEN2, DP 1.4 HBR3, and HDMI 2.1. Furthermore, electronic devices, such as computers, experience fast signal transmission at high frequencies during operation, providing users with a better user experience.

[0026] The first terminal 2 includes two first cutting surfaces 210 arranged opposite each other in the longitudinal direction and a first contact surface 220 located between the two first cutting surfaces 210. During the terminal manufacturing process, the first terminal 2 is usually cut from the terminal strip first, thus the first terminal 2 has two opposite cutting surfaces, namely the two first cutting surfaces 210. After cutting, the first terminal 2 is then bent to form a shape as shown in the image. Figure 4 The structure shown is as follows. The first terminal 2 has a first contact surface 220, which is located between two first cutting surfaces 210. The first terminal 2 is electrically connected to the mating terminal, i.e., the second terminal 4, through the first contact surface 220. Therefore, in this specific embodiment, the first cutting surface 210 and the first contact surface 220 of the first terminal 2 are not the same surface, and the first terminal 2 has stronger elasticity and greater stability.

[0027] Specifically, such as Figure 4 As shown, the first terminal 2 includes a vertically extending docking arm 21 and a laterally extending fixing arm 22; the first contact surface 220 is disposed on the docking arm 21. The first terminal 2 is L-shaped and is embedded in the socket body 1 by injection molding. The docking arm 21 is used for electrical connection with the second terminal 4 of the plug 30, and the fixing arm 22 is used for mounting to other circuit boards or connecting to other electronic devices. The docking arm 21 includes the first contact surface 220, and the first contact surfaces 220 of the docking arms 21 of the two symmetrically arranged first terminals 2 are also arranged opposite each other. The top of the docking arm 21 is embedded in the socket body 1 to strengthen the bonding force between the first terminal 2 and the socket body 1 above. The two second cut surfaces 410 of the docking arm 21 are symmetrically recessed inward with a first recess 211 and a second recess 212. The first recess 211 and the second recess 212 are used to better connect the docking arm 21 with the socket body 1 below, which can strengthen the bonding force between the second terminal 4 and the socket body 1.

[0028] like Figure 2 As shown, the socket body 1 is longitudinally elongated and recessed from top to bottom to form a longitudinally elongated insertion groove 10. The socket body 1 includes a pair of first sidewalls 11 surrounding the insertion groove 10 and a first endwall 12 connected to the longitudinal ends of the first sidewalls 11. A plurality of longitudinally arranged first slots 111 are formed on the inner wall surface of the first sidewalls 11. The first cutting surface 210 abuts against the first slot 111, and the first contact surface 220 is exposed towards the insertion groove 10.

[0029] The socket body 1 is generally elongated, and the first terminal 2 is embedded within it. The socket body 1 has a insertion groove 10, and the mating arm 21 of the first terminal 2 is correspondingly engaged within the first groove 111, with the first contact surface 220 of the mating arm 21 exposed outwards for electrical connection with the mating second terminal 4. The lower part of the insertion groove 10 is made of plastic and is fixedly attached to the lower part of the mating arm 21 of the first terminal 2. The first groove 111 extends downwards from the upper surface of the insertion groove 10 through the socket body 1, and the fixing arm 22 of the first terminal 2 also extends outwards from the lower part of the socket body 1.

[0030] The outer wall surface of the first sidewall 11 of the socket body 1 has a plurality of longitudinally arranged windows 112 recessed therein, and each window 112 is provided with a plurality of through holes 113, the through holes 113 penetrating the first sidewall 11. Thus, the through holes 113 can penetrate the first sidewall 11 and reach the first terminal 2, which facilitates the positioning of the first terminal 2 during the injection molding process.

[0031] Additionally, it should be noted that the top of the first side wall 11 and the first end wall 12 of the socket body 1 are provided with a plug-in surface 13 along the edge of the plug groove 10. The plug-in surface 13 is inclined downward, so that the plug 30 can be easily inserted.

[0032] like Figure 7 As shown, the second terminal 4 includes two second cutting surfaces 410 arranged opposite each other in the longitudinal direction and a second contact surface 420 located between the two second cutting surfaces 410; the second contact surface 420 is located on the bending arm 42. Similarly, in the process of manufacturing the second terminal 4, the second terminal 4 is first cut off from the terminal strip, thus forming two opposite cutting surfaces, namely the two second cutting surfaces 410, and then bent to form the shape shown. Figure 6 The structure and shape of the terminal are as follows. The bending surface and the cutting surface are not the same. Therefore, in this specific embodiment, the second cutting surface 410 and the second contact surface 420 of the second terminal 4 are not the same surface, and the terminal has stronger elasticity and stability.

[0033] As described above, the second terminal 4 includes a main arm 41, a bent arm 42 extending upward from the main arm 41, and a mounting arm 43 disposed below the main arm 41. The bent arm 42 includes a first bent segment 421 and a second bent segment 422 extending sequentially. The first bent segment 421 is connected to the main arm 41, and the bending angles of the first bent segment 421 and the second bent segment 422 are opposite. The thickness of the second bent segment 422 in the front-back direction is less than that of the first bent segment 421.

[0034] As described above, the second terminals 4 are arranged in pairs, and the first bending sections 421 of the two symmetrical second terminals 4 are both bent outwards, thus keeping the first bending sections 421 of the two symmetrical second terminals 4 away from each other; while the second bending sections 422 are both bent inwards, thus keeping the second bending sections 422 of the two symmetrical second terminals 4 closer to each other. The thickness of the second bending section 422 in the front-back direction is less than that of the first bending section 421, that is, the terminal at the second bending section 422 is thinned, thereby having advantages such as smooth transmission, stable characteristic impedance, and low signal loss when transmitting high-frequency signals.

[0035] Of course, if the overall thickness of the bending arm 42 of the second terminal 4 is reduced, or if it is a different structure, the purpose of this utility model can also be achieved.

[0036] The main arm 41 extends generally in the vertical direction and includes an inclined section 411 and a vertical section 412. The inclined section 411 is connected to the bent arm 42, and the vertical section 412 is connected to the mounting arm 43. The vertical section 412 extends vertically, and the inclined section 411 slopes upward from the vertical section 412. The inclined sections 411 of the two symmetrical second terminals 4 both extend outward. Therefore, during the insertion of the plug 30 into the socket 10, the second terminals 4 are elastic and can converge under the pressure of the insertion slot 10 for better electrical connection with the first terminal 2.

[0037] The second terminal 4 has protruding corner portions 4121 on the second cutting surface 410 of the main body arm 41, and the protruding corner portions 4121 are symmetrically arranged. The protruding corner portions 4121 are provided on the vertical section 412, so as to facilitate better connection with the plastic of the plug body 3.

[0038] The convex corner 4121 extends the width of the main body arm 41 of the second terminal 4, thereby further securing the second terminal 4 to the plug body 3.

[0039] The bottom of the main body arm 41 of the second terminal 4 is recessed inward to form a notch, and limiting protrusions 4122 are formed between the notch and the two second cutting surfaces 410. The width of the mounting arm 43 along the longitudinal direction is the same as the width of the notch, and the mounting arm 43 is fixedly mounted at the notch. The mounting arm 43 is assembled onto the main body arm 41. Of course, if the mounting arm 43 and the main body arm 41 are integrally formed, and are also cut and bent from the terminal material strip, then it is also within the protection scope of this utility model.

[0040] The plug body 3 includes a longitudinally elongated body portion 31 and a mating protrusion 32 protruding upward from the body portion 31. The body portion 31 has several receiving grooves that extend vertically through it. The main body arm 41 is accommodated in the receiving grooves. The second cutting surface 410 of the main body arm 41 is in contact with the inner wall of the receiving groove.

[0041] In this specific embodiment, since the inclined section 411 of the main arm 41 extends outward at an incline, the receiving groove has a certain width in the front-back direction to provide the main arm 41 with a certain deformation space. At the same time, the main arm 41 is provided with a protruding corner portion 4121 and a limiting protrusion 4122 to better connect and fix with the receiving groove, thereby enhancing the connection stability between the second terminal 4 and the plug body 3.

[0042] The mating protrusion 32 includes a pair of longitudinally elongated second sidewalls 321 and second endwalls 322 connected to the longitudinal ends of the second sidewalls 321. The second sidewalls 321 are provided with a plurality of longitudinally arranged second slots, and the bent arm 42 of the second terminal 4 is accommodated in the second slot. The second cutting surface 410 of the bent arm 42 abuts against the inner wall of the second slot, and the second contact surface 420 is exposed outward. As described above, the first bent section 421 of the bent arm 42 is exposed outward from the second slot to be electrically connected to the mating second terminal 4.

[0043] Therefore, in summary, since the thickness of at least a portion of the bending arm 42 of the second terminal 4 in the front-to-back direction is less than that of the main arm 41, the bending arm 42 is at least partially thinned, resulting in smooth transmission of high-frequency signals. This provides advantages such as stable characteristic impedance and low signal loss, thus meeting the requirements of multiple high-frequency specifications such as PCIE GEN4, USB3.2 GEN2, DP1.4 HBR3, and HDMI2.1. Furthermore, electronic devices, such as computers, have high signal transmission speeds and frequencies during operation, providing users with a better user experience. Moreover, both the first terminal 2 and the second terminal 4 are cut from terminal strips, and their cut surfaces and the contact surfaces used for mating are not the same, resulting in greater elasticity and stability for the first terminal 2 and the second terminal 4.

[0044] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0045] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A board-to-board, small-pitch, multi-band, high-frequency electrical connector, comprising a receptacle and a plug that are plugged into each other, the receptacle comprising a receptacle body and a plurality of first terminals received in the receptacle body, the plug comprising a plug body and a plurality of second terminals received in the plug body, the receptacle body and the plug body each extending along a longitudinal direction, characterized in that: The second terminal comprises a main arm, a bent arm extending upwards from the main arm, and a mounting arm arranged below the main arm, and a thickness of at least part of the bent arm in the front-rear direction is smaller than that of the main arm.

2. The board-to-board, close-coupled, multi-band, high-frequency electrical connector of claim 1, wherein: The first terminal comprises two first cutting surfaces arranged opposite in the longitudinal direction, and a first contact surface between the two first cutting surfaces.

3. The board-to-board, close-coupled, multi-band, high-frequency electrical connector of claim 2, wherein: The first terminal comprises a vertical extending docking arm and a horizontal extending fixing arm, and the first contact surface is arranged on the docking arm.

4. The board-to-board, close-coupled, multi-band, high-frequency electrical connector of claim 2, wherein: The socket body is longitudinally arranged and concave from top to bottom to form a longitudinal plug slot, and the socket body comprises a pair of first side walls surrounding the plug slot, and a first end wall connected to the longitudinal ends of the first side walls; a plurality of first clamping grooves are arranged on the inner wall surface of the first side walls in the longitudinal direction; the first cutting surface is arranged in the first clamping groove, and the first contact surface is exposed towards the plug slot.

5. The board-to-board small-pitch multi-band high-frequency electrical connector as described in claim 2, characterized in that: A plurality of window portions are arranged on the outer wall surface of the first side wall of the socket body in the longitudinal direction, and a plurality of through holes are arranged in each window portion, and the through holes penetrate the first side wall inwardly.

6. The board-to-board close pitch multi-band high frequency electrical connector of claim 1, wherein: The second terminal comprises two second cutting surfaces arranged opposite in the longitudinal direction, and a second contact surface between the two second cutting surfaces; the second contact surface is arranged on the bent arm.

7. The board-to-board close pitch multi-band high frequency electrical connector of claim 6, wherein: The bent arm comprises a first bent section and a second bent section extending in sequence, the first bent section is connected to the main arm, and the bending angles of the first bent section and the second bent section are opposite; the thickness of the second bent section in the front-rear direction is smaller than that of the first bent section.

8. The board-to-board, close-coupled, multi-band, high-frequency electrical connector of claim 6, wherein: A protruding corner portion is outwardly arranged on the second cutting surface of the main arm of the second terminal, and the protruding corner portions are symmetrically arranged.

9. The board-to-board close pitch multi-band high frequency electrical connector of claim 6, wherein: The plug body comprises a body portion and a docking protruding portion upwardly protruding from the body portion, a plurality of accommodating grooves are formed in the body portion in the vertical direction, and the main arm is accommodated in the accommodating grooves; the second cutting surface of the main arm is arranged in abutment with the inner wall of the accommodating grooves.

10. The board-to-board, close-coupled, multi-band, high-frequency electrical connector of claim 6, wherein: The plug body comprises a body portion and a docking protruding portion upwardly protruding from the body portion, the docking protruding portion comprises a pair of second side walls arranged in the longitudinal direction, and a second end wall connected to the longitudinal ends of the second side walls, the second side walls are provided with a plurality of second clamping grooves arranged in the longitudinal direction, and the bent arm of the second terminal is accommodated in the second clamping grooves; the second cutting surface of the bent arm is arranged in abutment with the inner wall of the second clamping grooves, and the second contact surface is outwardly exposed.

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