Electrical connectors

Abstract

An electrical connector includes: two symmetrically arranged insulating bases; two terminal blocks passing through the two insulating bases and including a plurality of signal terminals and a ground terminal, with two adjacent signal terminals disposed between the two ground terminals; and two shielding members symmetrically arranged along a front-rear axis, each comprising: a horizontally arranged elongated plate-shaped base plate; a connecting strip arranged parallel to the base plate; a wide extension portion longitudinally connected between the base plate and the connecting strip; a plurality of narrow extension portions arranged longitudinally and parallel to the wide extension portion; and a plurality of spring arms extending outward from one side edge of the extension portion. The upper and lower edges of the two shielding members are aligned, and the extension portion and the spring arms are disposed on one side of the front-rear axis of the shielding member. The rear ends of the spring arms passing through the insulating bases respectively contact the ground terminals.

Description

Technical Field

[0001] This utility model relates to an electrical connector, and more particularly to an electrical connector that can operate stably in a high-frequency environment. Background Technology

[0002] In recent years, the booming development of the electronics industry and consumers' preference for lighter, thinner, smaller, and more portable electronic products have driven small electronic products to become the mainstream in the market. For these reasons, electronic devices are becoming increasingly smaller, leading to the miniaturization of circuit boards and corresponding connectors. However, with the miniaturization of circuits, the distance between terminals inside electronic components such as connectors is shortened, resulting in more frequent coupling between the electric fields of the terminals. This contributes to the generation of more noise signals and exacerbates crosstalk problems when transmitting high-frequency signals, causing connectors to be unable to operate stably in high-frequency environments.

[0003] Therefore, it is necessary to provide an electrical connector with better resistance to high-frequency noise and crosstalk. Summary of the Invention

[0004] The purpose of this utility model is to provide an electrical connector, comprising: two symmetrically arranged insulating seats, the two insulating seats being elongated; two symmetrically arranged terminal groups, the two terminal groups respectively passing through the two insulating seats and including a plurality of signal terminals and a plurality of ground terminals, two adjacent signal terminals forming a differential terminal pair, the differential terminal pair being disposed between the two ground terminals; and two shielding members, the two shielding members being joined together and respectively fixed in the two insulating seats, and arranged axially symmetrically with a front-rear axis as the axis of symmetry; wherein each of the two shielding members is formed by stamping a single metal sheet, and each includes: a horizontally arranged elongated plate-shaped base plate, a connecting strip arranged parallel to the base plate, and longitudinally connected to the base plate and the insulating seat. A wide extension between the connecting strips, a plurality of narrow extensions longitudinally connected between the substrate and the connecting strip and parallel to the wide extension, and a plurality of spring arms extending outward from one side edge of the wide extension and the narrow extensions, the height of the shield extending vertically is greater than the height of the two insulating seats, and the upper and lower edges of the two shields are aligned with each other, so that the substrate and the connecting strip protrude from the top and bottom surfaces of the two insulating seats, and the extensions and the spring arms are both located on the same side of the front and rear axis of the shield, so that the substrates of the two shields cover the gap between the extensions, the spring arms extend into the insulating seats, and the ends of the spring arms respectively contact the grounding terminals of the two terminal groups.

[0005] In some embodiments, the wide extension is located at the rear edge of the substrate and is aligned with the differential terminal pair closest to the rear edge. The width of the wide extension is cut off from the width of the differential terminal pair. The narrow extension is aligned with the signal terminal adjacent to the ground terminal on the front side.

[0006] In some embodiments, the spring arms disposed on the front and rear sides of the wide extension respectively abut against two adjacent grounding terminals of the differential terminal pair that are aligned with it, and the spring arm disposed on the front side of the narrow extension abuts against the grounding terminal adjacent to the signal terminal on the rear side.

[0007] In some embodiments, the spring arm disposed on the same extension and located on the same side edge includes an outer spring arm located at the end of the extension and an inner spring arm covered by the two insulating seats. The outer spring arm is disposed close to the top and bottom surfaces of the two insulating seats. The outer spring arm and the inner spring arm are respectively provided with a contact section that bends inward and is electrically connected to the grounding terminal at their outwardly extending ends.

[0008] In some embodiments, the signal terminal and the ground terminal each include a fixing portion and a welding portion extending downward from the fixing portion. The welding portion extends downward and then bends outward and extends further. The distance the substrate extends downward does not exceed the bend of the welding portion. The length of the substrate is approximately equal to the length of all terminals arranged together.

[0009] In some embodiments, the fixing portion of the signal terminal has a recessed portion on one side adjacent to the fixing portion of the grounding terminal, and the fixing portion of the grounding terminal has a narrow portion formed by inward indentation on both sides corresponding to the position of the recessed portion of the signal terminal. The recessed portion and the narrow portion are opposite to each other, and the contact section of the inner spring arm abuts against the narrow portion of the fixing portion of the grounding terminal.

[0010] In some embodiments, the adjacent surfaces of the two insulating seats are respectively provided with a groove, the shielding member protrudes from the top and bottom surfaces of the insulating seat by the groove, the bottom surface of the groove is respectively provided with a plurality of through holes, the grounding terminal is exposed in the through holes, and the inner spring arm is located in the through holes of the insulating seat.

[0011] In some embodiments, the substrate and the connecting strip are each provided with a protrusion that protrudes inward from the adjacent surfaces of the two shielding members, and the positions of the two protrusions are opposite.

[0012] Another objective of this utility model is to provide an electrical connector, comprising: two insulating bases; two terminal groups, each terminal group passing through the two insulating bases and including a plurality of signal terminals and a plurality of ground terminals, two adjacent signal terminals forming a differential terminal pair, the differential terminal pair being disposed between the two ground terminals; and two shielding members, the two shielding members being joined together and respectively fixed in the two insulating bases; wherein both shielding members are formed by stamping metal sheets, and each includes: a base plate, a connecting strip arranged parallel to the base plate, longitudinally connected between the base plate and the connecting strip. The shield has multiple extensions between the shields and multiple spring arms extending outward from one side edge of the extensions. The height of the shields extending vertically is greater than the height of the two insulating seats. The upper and lower edges of the two shields are aligned with each other, so that the substrate and the connecting strip protrude from the top and bottom surfaces of the two insulating seats. The extensions and the spring arms are both located on the same side of the front and rear axes of the shields, so that the substrates of the two shields cover the gap between the multiple extensions. The spring arms extend into the insulating seats, and the ends of the spring arms contact the grounding terminals of the two terminal groups respectively.

[0013] As described above, the electrical connector of this utility model has a shielding component whose substrate and connecting strip protrude from the top and bottom surfaces of the two insulating seats to separate the electric fields of the two terminal groups and reduce the coupling between the electric fields. The shielding component is provided with a spring arm that bends outward and extends to contact all the grounding terminals to eliminate the potential difference between the grounding terminals. This improves the crosstalk problem generated when transmitting high-frequency signals and enhances the working capability of the electrical connector in high-frequency environments. Attached Figure Description

[0014] To make the above and other objects, features, advantages and embodiments of this utility model more apparent and understandable, the contents of this case can be better understood when read in conjunction with the accompanying drawings.

[0015] Figure 1 This is a perspective view of the electrical connector of this utility model.

[0016] Figure 2 This is an exploded view of the electrical connector of this utility model.

[0017] Figure 3 This is an exploded view of the terminal assembly of this utility model.

[0018] Figure 4 This is an exploded view of the insulating base and shielding component of this utility model.

[0019] Figure 5 This is a partial perspective view of the terminal assembly of this utility model.

[0020] Figure 6This is a perspective view of the shielding component of this utility model.

[0021] Figure 7 This is a bottom view of the terminal assembly of this utility model.

[0022] Figure 8 This is a left view of the terminal assembly of this utility model.

[0023] Figure 9 This utility model terminal assembly is along Figure 8 A partial cross-sectional view of line AA.

[0024] Figure 10 This utility model terminal assembly is along Figure 8 A partial cross-sectional view of the BB line. Detailed Implementation

[0025] To illustrate in detail the technical content, structural features, objectives, and effects of the electrical connector of this utility model, the following embodiments are provided in conjunction with the accompanying drawings.

[0026] Please see Figure 1 and Figure 2 The present invention provides an electrical connector 200 comprising a housing 50, an accommodating space 55 disposed inside the housing 50, an insulating body 40 disposed in the accommodating space 55, and a terminal assembly 100 disposed inside the insulating body 40.

[0027] Please see again Figure 3 The terminal assembly 100 includes two insulating seats 10 arranged symmetrically on the left and right, two terminal groups 20 respectively passing through the insulating seats 10, and two shielding members 30 respectively fixed in the insulating seats 10.

[0028] Please see Figure 3 and Figure 4 The two insulating seats 10 are generally elongated, and each has a groove 11 at its adjacent surface to accommodate the shielding member 30. The height of the insulating seat 10 is less than that of the shielding member 30, so that the shielding member 30 protrudes from the top and bottom of the insulating seat 10. The bottom surface of each groove 11 is provided with a plurality of through holes 12.

[0029] Please see Figure 3 and Figure 5 The terminal group 20 consists of a plurality of signal terminals 201 and a plurality of ground terminals 202 arranged side by side. The signal terminals 201 form a differential terminal pair in pairs, while the ground terminals 202 are alternately arranged between two sets of differential terminal pairs. The ground terminals 202 are exposed in the through hole 12.

[0030] Continue reading Figure 3 and Figure 5 The signal terminal 201 and the ground terminal 202 are both elongated strips and each includes a fixing part 201a and 202a fixed and covered in the insulating base 10, a mating part 201b and 202b extending upward from the fixing part 201a and 202a, and a welding part 201c and 202c extending downward from the fixing part 201a and 202a, respectively. The welding parts 201c and 202c extend downward and then bend outward and extend to be welded to a circuit board. Furthermore, the fixing portion 201a of the signal terminal 201 and the fixing portion 202a of the ground terminal 202 are provided with a single-sided recessed portion 201d on the side adjacent to each other. The fixing portion 202a of the ground terminal 202 is provided with a narrow portion 202d formed by inward indentation on both sides corresponding to the position of the recessed portion 201d of the signal terminal 201. The recessed portion 201d and the narrow portion 202d are opposite to each other to reduce the cross-sectional area of ​​the two fixing portions 201a and 202a, thereby improving the impedance matching of the electrical connector 200 and enhancing the working stability of the electrical connector 200 in a high-frequency environment.

[0031] Please see Figure 3 Each of the two shielding components 30 is formed by stamping a single metal sheet, and the two are arranged symmetrically with the front and rear axes as the axis of symmetry. After the two shielding components 30 are joined together, they are clamped and fixed in the two insulating seats 10, and electrically connected between the grounding terminals 202 in the two terminal groups 20.

[0032] Please see again Figure 3 , Figure 4 and Figures 6 to 10 Taking the shielding member 30 installed on the right side as an example, the shielding member 30 includes: a long strip-shaped base plate 31 disposed at the top end, a connecting strip 32 disposed at the bottom end and parallel to the base plate 31, a wide extension 33 connected between the base plate 31 and the connecting strip 32, a plurality of narrow extensions 34 connected between the base plate 31 and the connecting strip 32 and parallel to the wide extension 33, and a plurality of spring arms 35 extending outward from one side edge of the wide extension 33 and the narrow extension 34.

[0033] The wide extension 33 and the narrow extension 34 are aligned with the signal terminals 201. The wide extension 33 is located at the rear edge of the substrate 31 and is aligned with the differential terminal pair closest to the rear edge. The narrow extension 34 is aligned with the signal terminal 201 adjacent to the ground terminal 202 on the front edge. The width of the wide extension 33 is cut off from the width of the aligned differential terminal pair. The spring arm 35 passes through the insulating base 10 and contacts the ground terminal 202, thereby making all the ground terminals 202 have the same potential. The spring arm 35 located at the front edge bends forward, while the spring arm 35 located at the rear edge bends backward. The plurality of spring arms 35 disposed on the same extension 33, 34 and located on the same side edge include an outer spring arm 36 located at the end of the extension 33, 34 and an inner spring arm 37 located within the two insulating seats 10. The outer spring arm 36 is disposed close to the top and bottom surfaces of the two insulating seats 10. The inner spring arm 37 is installed in the through hole 12. The outer spring arm 36 and the inner spring arm 37 are respectively provided with an inwardly bent contact section 351 at the outwardly extending ends, which is electrically connected to the grounding terminal 202.

[0034] Please see Figure 6 and Figure 9 In this embodiment, the upper and lower edges of the two symmetrically arranged shielding members 30 are aligned with each other, and the height of the two shielding members 30 extending vertically is greater than the height of the groove 11, so that a part of the substrate 31 and the connecting strip 32 protrude from the groove 11, and protrude from the top and bottom surfaces of the two insulating seats 10 respectively.

[0035] Please see Figure 3 , Figure 9 and Figure 10 In this preferred embodiment, all terminals in the two terminal groups 20 are arranged symmetrically from left to right. The downward extension distance of the substrate 31 does not exceed the bend of the welding portion 201c. The vertical extension length of the substrate 31 is equal, and the front-to-back length of the substrate 31 is approximately equal to the arrangement length of all terminals. This allows the substrate 31 of one shielding member 30 to cover the gap between the extension portions 33 and 34 of the other shielding member 30, thereby separating the electric field between the two terminal groups 20, reducing the coupling between the electric fields, and suppressing the generation of noise signals. In this embodiment, the substrate 31 and the connecting strip 32 are each provided with a protrusion 38 that protrudes inward from the adjacent surfaces of the two shielding members 30. The positions of the protrusion 38 on the substrate and the protrusion 38 on the connecting strip 32 are opposite, making it easy for the two shielding members 30 to overlap.

[0036] The spring arms 35 located on the front and rear sides of the wide extension 33 respectively abut against the two adjacent grounding terminals 202 of the differential terminal pair that are aligned with it. The spring arms 35 located on the front side of the narrow extension 34 respectively abut against the grounding terminals 202 adjacent to the signal terminal 201 on the rear side. The contact section 351 of the outer spring arm 36 abuts against the fixing part 202a, and the contact section 351 of the inner spring arm 37 abuts against the narrow part 202d.

[0037] In summary, the electrical connector 200 of this invention, through the substrate 31 of the two shielding members 30, with the substrate 31 and the connecting strip 32 protruding from the two insulating seats 10, separates the electric fields of all differential terminal pairs in the two terminal groups 20, weakens the coupling phenomenon between the electric fields, and thus reduces noise signals. Furthermore, through the outer spring arm 36 and the inner spring arm 37 disposed on the front and rear side edges of the extensions 33 and 34, both of which are electrically connected to the grounding terminals 202 in the two terminal groups 20, the potential difference between the grounding terminals 202 is eliminated, pushing the crosstalk resonance point to a higher frequency. Therefore, the electrical connector 200 of this invention can effectively suppress the crosstalk resonance point, improve the crosstalk problem of high-frequency signals, and enhance the transmission capability of high-frequency signals.

[0038] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An electrical connector, characterized by: The device comprises: two symmetrically arranged insulating bases, each insulating base being elongated; two symmetrically arranged terminal groups, each terminal group passing through the two insulating bases and including a plurality of signal terminals and a plurality of ground terminals, two adjacent signal terminals forming a differential terminal pair, the differential terminal pair being disposed between the two ground terminals; and two shielding members, the two shielding members being joined together and respectively fixed in the two insulating bases, and arranged axially symmetrically with a front-rear axis as the axis of symmetry; wherein each of the two shielding members is formed by stamping a single metal sheet, and each includes: a horizontally arranged elongated plate-shaped base plate, a connecting strip arranged parallel to the base plate, and a wide extension connecting the base plate and the connecting strip longitudinally. The shielding member has a longitudinal extension, a plurality of narrow extensions that are parallel to the wide extension and are connected between the substrate and the connecting strip, and a plurality of spring arms that extend outward from one side edge of the wide extension and the narrow extension. The height of the shielding member extending vertically is greater than the height of the two insulating seats, and the upper and lower edges of the two shielding members are aligned with each other, so that the substrate and the connecting strip protrude from the top and bottom surfaces of the two insulating seats. The extensions and the spring arms are both located on the same side of the front and rear axis of the shielding member, so that the substrates of the two shielding members cover the gap between the extensions. The spring arms extend into the insulating seats, and the ends of the spring arms respectively contact the grounding terminals of the two terminal groups.

2. The electrical connector as described in claim 1, characterized in that: The wide extension is located at the rear edge of the substrate and is aligned with the differential terminal pair closest to the rear edge. The width of the wide extension is cut off from the width of the differential terminal pair. The narrow extension is aligned with the signal terminal adjacent to the ground terminal on the front edge.

3. The electrical connector as described in claim 2, characterized in that: The spring arms located on the front and rear edges of the wide extension respectively abut against and are aligned with the two adjacent grounding terminals of the differential terminal pair, and the spring arm located on the front edge of the narrow extension abuts against the grounding terminal on the rear side adjacent to the signal terminal.

4. The electrical connector as described in claim 1, characterized in that: The spring arm disposed on the same extension and located on the same side edge includes an outer spring arm located at the end of the extension and an inner spring arm covered by the two insulating seats. The outer spring arm is disposed close to the top and bottom surfaces of the two insulating seats. The outer spring arm and the inner spring arm are respectively provided with a contact section that bends inward and is electrically connected to the grounding terminal at the outwardly extending ends.

5. The electrical connector as described in claim 4, characterized in that: The signal terminal and the ground terminal each include a fixing part and a welding part extending downward from the fixing part. The welding part extends downward and then bends outward and extends further. The distance the substrate extends downward does not exceed the bend of the welding part. The length of the substrate is approximately equal to the length of all terminals arranged together.

6. The electrical connector as described in claim 5, characterized in that: The fixing portion of the signal terminal has a recessed portion on one side adjacent to the fixing portion of the grounding terminal, and the fixing portion of the grounding terminal has a narrow portion formed by inward indentation on both sides corresponding to the position of the recessed portion of the signal terminal. The recessed portion and the narrow portion are opposite to each other, and the contact section of the inner spring arm abuts against the narrow portion of the fixing portion of the grounding terminal.

7. The electrical connector as claimed in claim 4, characterized in that: Each of the two insulating bases has a groove on its adjacent surface. The shielding member protrudes from the top and bottom surfaces of the insulating base through the groove. The bottom surface of the groove has a plurality of through holes. The grounding terminal is exposed in the through holes, and the inner spring arm is located in the through holes of the insulating base.

8. The electrical connector as claimed in claim 1, characterized in that: The substrate and the connecting strip are each provided with a protrusion that protrudes inward from the adjacent surfaces of the two shielding members, and the positions of the two protrusions are opposite.

9. An electrical connector, characterized in that: The device comprises: two insulating bases; two terminal groups, each terminal group passing through the two insulating bases and including a plurality of signal terminals and a plurality of ground terminals, two adjacent signal terminals forming a differential terminal pair, the differential terminal pair being disposed between the two ground terminals; and two shielding members, the two shielding members being joined and respectively fixed in the two insulating bases; wherein both shielding members are formed by stamping metal sheets and each includes: a base plate, a connecting strip arranged parallel to the base plate, a plurality of extensions longitudinally connected between the base plate and the connecting strip, and A plurality of spring arms extend outward from one side edge of the extension portion. The height of the shielding member extending vertically is greater than the height of the two insulating seats. The upper and lower edges of the two shielding members are aligned with each other, so that the substrate and the connecting strip protrude from the top and bottom surfaces of the two insulating seats. The extension portion and the spring arms are both located on the same side of the front and rear axis of the shielding member, so that the substrates of the two shielding members cover the gap between the plurality of extension portions. The spring arms extend into the insulating seats, and the ends of the spring arms respectively contact the grounding terminals of the two terminal groups.

Images