Electric connector and terminal thereof

Abstract

The utility model discloses an electric connector and a terminal thereof, and the electric connector comprises a body which is provided with a plurality of vertically-through accommodating grooves; the plurality of terminals are respectively accommodated in the accommodating grooves; each terminal is formed by winding a metal sheet and is provided with a barrel-shaped part and a contact part which is bent inwards from the barrel-shaped part and protrudes upwards, the contact part is used for abutting against an upper butt joint element upwards, the barrel-shaped part is provided with a first side edge and a second side edge which are spaced, and the contact part is wound inwards from the first side edge and protrudes upwards from the second side edge; the first side edge and the second side edge are obliquely arranged in the vertical direction, and the contact part is formed by bending the cylindrical part inwards, so that when the contact part is pressed downwards by an upper butt joint element, outward expansion of the cylindrical part during compression deformation can be reduced, stable contact between the first side edge and the second side edge is improved, and the service life of the connector is prolonged. Therefore, the conduction path of the terminal is shortened.

Description

[Technical Field]

[0001] This utility model relates to an electrical connector and its terminals, and more particularly to a terminal for improving high frequency and an electrical connector having the terminal. [Background Technology]

[0002] An electrical connector has multiple terminals, each terminal having a first ridge and a second ridge arranged left and right, and multiple ribs arranged at intervals in a vertical direction connecting the first ridge and the second ridge. The first ridge and the second ridge extend longitudinally in the vertical direction. A contact portion is provided at the upper end of the first ridge. The ribs extend spirally upward around a virtual axis. Although it is desirable for the first ridge to contact the second ridge when the mating element contacts the contact portion downward to shorten the conduction path of the terminal, the ribs near the contact portion are subjected to greater forces than the ribs far from the contact portion, making the ribs near the contact portion more prone to torsion. Furthermore, since the contact portion is located directly above the first ridge, when the mating element contacts the contact portion downward, the first ridge is prone to torsion outward, which may cause the first ridge to fail to contact the second ridge after it moves downward. In this case, the conduction path of the terminal must pass through the ribs, making the conduction path of the terminal longer, which is not conducive to high-speed signal transmission. [Utility Model Content]

[0003] The purpose of this invention is to provide a terminal and an electrical connector having the terminal, wherein the terminal is generally cylindrical and has a shortened conduction path.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An electrical connector includes: a body having a plurality of through-holes; a plurality of terminals respectively received in the receiving slots; each terminal is formed by winding a metal sheet, having a cylindrical portion and a contact portion that bends inward from the cylindrical portion and protrudes upward, the contact portion being used to abut against an upper mating element upward, the cylindrical portion having a first side edge and a second side edge spaced apart, the first side edge and the second side edge being inclined in the vertical direction, and the first side edge and the second side edge contacting each other when the contact portion is pressed downward by the upper mating element.

[0006] Furthermore, the angle between the contact point of the first side edge and the second side edge and the horizontal plane is less than or equal to 85 degrees and greater than or equal to 60 degrees.

[0007] Furthermore, the contact portion is wound inward from the first side edge, and the terminal is provided with a through groove penetrating the thickness of the cylindrical portion and the thickness of the contact portion. Thus, the contact portion includes an upper section for abutting against the upper docking element, a lower section located below the upper section, and a connecting section connecting the upper section and the lower section. The cylindrical portion includes a first rib and a second rib spaced vertically apart, and a connecting rib connecting the first rib and the lower section. The vertical distance between the first rib and the second rib gradually increases along the winding direction. The second rib connects to the upper section, the second side edge is located on the second rib, and the first side edge is located on the connecting rib.

[0008] Furthermore, the cylindrical portion also includes a third rib, which is disposed between the first rib and the second rib, and is spaced vertically from the first rib and the second rib respectively. The third rib is connected to the connecting rib, and the distance between the first rib and the third rib gradually increases along the winding direction.

[0009] Furthermore, a connecting part protrudes upward from the second rib to connect the material strip. After the terminal is flattened, the distance between the connecting rib and the second rib gradually decreases from bottom to top. The part of the second rib that connects the first rib and the connecting part is defined as the first segment, and the part of the second rib that connects the upper segment and the connecting part is defined as the second segment. The second segment and the upper segment are located on the same straight line, and the upper segment and the lower segment are arranged parallel to each other.

[0010] Furthermore, the terminals include signal terminals and ground terminals. Each signal terminal also includes a first protrusion and a second protrusion, with the first protrusion and the second protrusion extending in opposite directions. Each receiving slot for receiving the signal terminal has a stop and a plurality of limiting slots extending upward through the body. The lower surface of the stop prevents the first protrusion from moving upward. The second protrusion is received in the limiting slot, and the bottom surface of the limiting slot prevents the second protrusion from moving downward.

[0011] Furthermore, it includes a metal sleeve, and the terminals include a grounding terminal and a signal terminal. The metal sleeve surrounds the periphery of the cylindrical portion of the grounding terminal, and a plurality of through slots penetrate the cylindrical portion along the thickness of the cylindrical portion. The contact portion is higher than the upper end of the metal sleeve and is projected in the horizontal direction. The metal sleeve shields the through slots.

[0012] Furthermore, each terminal also has a lower cylindrical portion and a mating portion that bends inward and protrudes downward from the lower cylindrical portion. The cylindrical portion and the lower cylindrical portion are separated vertically and connected by an intermediate portion. The mating portion is used to abut downward against a lower mating element. The mating portion is lower than the lower end of the metal sleeve. The metal sleeve is bent towards the cylindrical portion by a bend. The bend is located between the cylindrical portion and the lower cylindrical portion. When the terminal is pressed by the upper mating element and the lower mating element, the cylindrical portion and the lower cylindrical portion abut against the bend respectively.

[0013] Furthermore, the terminals include multiple grounding terminals and multiple pairs of differential signal terminals; one of the pairs of differential signal terminals is rotated 180 degrees symmetrically relative to the other.

[0014] This utility model also provides a terminal formed by winding a metal sheet, including a cylindrical portion and a contact portion that is wound inward from the cylindrical portion and protrudes upward. The contact portion is used to abut against an upper mating element. The cylindrical portion has a first side edge and a second side edge spaced apart. The first side edge and the second side edge are inclined in the vertical direction. When the contact portion is pressed downward by the upper mating element, the first side edge and the second side edge come into contact with each other.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Since the contact portion is formed by bending inward from the cylindrical portion, when the upper mating element presses the contact portion downward to move the contact portion downward, it can reduce the outward expansion of the cylindrical portion during compression deformation, improve the stable contact between the first side edge and the second side edge, and thus shorten the conduction path of the terminal. [Attached Image Description]

[0017] Figure 1 This is an exploded perspective view of the electrical connector of this utility model;

[0018] Figure 2 This is a top view of the electrical connector of this utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the upper and lower mating elements of the electrical connector of this utility model.

[0020] Figure 4 This is a perspective view of the grounding terminal of this utility model before and after it is assembled into the metal sleeve;

[0021] Figure 5 This is a three-dimensional sectional view of the cylindrical part and the lower cylindrical part of the grounding terminal of this utility model before and after the abutment and bending part;

[0022] Figure 6 This is a three-dimensional sectional view of the differential signal terminals housed in the main body of this utility model;

[0023] Figure 7 This is a schematic diagram showing the unfolded differential signal terminal of this utility model.

[0024] Explanation of reference numerals in the accompanying drawings for the specific implementation methods:

[0025] Electrical connector 100 Upper docking element 200 Lower docking element 300 Ontology 1 Metal Sleeve 2 First containment tank 11 Second containment tank 12 Limiting groove 111 Block 112 Differential signal terminal S Grounding terminal G Cylindrical part A Contact part 31 First lateral edge X Second lateral edge Y Through slot 32 Upper section 311 Next section 312 Connector 313 First rib 33 Second rib 34 Connecting rib 35 Continuous material section 36 First paragraph 341 Second paragraph 342 Third rib 37 Lower cylinder B docking section 38 Middle part C First protrusion D Second protrusion E Bending part 21 Groove 22 400 strip

Detailed Implementation Methods

[0026] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0027] like Figure 1 , Figure 2 As shown, the electrical connector 100 of this utility model is used to electrically connect an upper docking element 200 and a lower docking element 300 respectively (in this embodiment, the upper docking element 200 is a chip and the lower docking element 300 is a circuit board). The electrical connector 100 includes a body 1, multiple terminals and multiple metal sleeves 2. The body 1 has multiple first receiving grooves 11 and second receiving grooves 12 that extend vertically through the body 1. Each first receiving groove 11 includes a limiting groove 111 that extends upward through the body 1 and a stop block 112 that protrudes from the groove wall of the first receiving groove 11.

[0028] like Figure 1 , Figure 2 , Figure 3 As shown, the multiple terminals include multiple signal terminals (in this embodiment, multiple pairs of differential signal terminals S; in other embodiments, they can also be single-ended signal terminals) and multiple ground terminals G (the structure of the differential signal terminals S is roughly the same as the structure of the ground terminals G). A pair of differential signal terminals S is surrounded by multiple ground terminals G. Each differential signal terminal S is respectively housed in a first receiving slot 11, and each ground terminal G is respectively housed in a second receiving slot 12. One of the pair of differential signal terminals S is symmetrically rotated 180 degrees relative to the other (e.g., ...). Figure 2 As shown), each terminal is formed by winding a metal sheet, having a cylindrical portion A and a contact portion 31 (i.e., a projection along the vertical direction, the contact portion 31 being located inside the cylindrical portion A and close to the center of the cylindrical portion A) that bends inward from the cylindrical portion A and protrudes upward. The contact portion 31 is used to abut upward against the upper mating element 200. The cylindrical portion A has a spaced first side edge X and a second side edge Y and is inclined along the vertical direction. The angle between the abutting position of the first side edge X and the second side edge Y and the horizontal plane is less than or equal to 85 degrees and greater than or equal to 60 degrees (in this embodiment, the angle between the first side edge X and the horizontal plane is 60 degrees, such as...). Figure 7As shown (i.e., α = 60°), in this embodiment, the contact portion 31 connects the first side edge X of the cylindrical portion A and the upper edge of the cylindrical portion A and is rolled inward (of course, in other embodiments, the contact portion 31 may also bend upward from the upper edge of the cylindrical portion A and extend towards the center line of the cylindrical portion A); the through groove 32 penetrates the cylindrical portion A and the contact portion 31 along the thickness of the cylindrical portion A, so that the contact portion 31 includes an upper section 311 for abutting upward against the upper mating element 200, a lower section 312 located below the upper section 311, and a connecting section 313 connecting the upper section 311 and the lower section 312. Section 311 is arranged parallel to the lower section 312. The cylindrical portion A further includes a first rib 33 and a second rib 34 spaced vertically apart, and a connecting rib 35 connecting the first rib 33 and the lower section 312. The vertical distance between the first rib 33 and the second rib 34 gradually increases along the winding direction, thereby reducing the number of windings of the cylindrical portion A. This allows the height of the differential signal terminal S to meet the requirements, and further shortens the length of the first rib 33 and the second rib 34, thus shortening the signal transmission path. The first side edge X is located on the connecting rib 35, and the second rib 34 connects to the upper section 311. A connecting part 36 protrudes upward from the second rib 34 to connect the material strip 400. After the differential signal terminal S is flattened, the distance between the connecting rib 35 and the second rib 34 gradually decreases from bottom to top. The portion of the second rib 34 connecting the first rib 33 and the connecting part 36 is defined as the first segment 341, which is arc-shaped. The portion of the second rib 34 connecting the upper segment 311 and the connecting part 36 is defined as the second segment 342, which is on the same straight line as the upper segment 311. The cylindrical portion A also includes a third... Rib 37 is disposed between the first rib 33 and the second rib 34, and is respectively spaced vertically from the first rib 33 and the second rib 34. The third rib 37 is connected to the connecting rib 35, and the vertical distance between the first rib 33 and the third rib 37 gradually increases along the winding direction. Adding the third rib 37 between the first rib 33 and the second rib 34 is equivalent to adding a lever arm to the cylindrical part A. When the contact part 31 abuts against the upper docking element 200, the reaction force generated by the cylindrical part A increases, thereby providing a greater positive force for the contact part 31 to abut against the upper docking element 200.

[0029] like Figure 1 , Figure 6 , Figure 7As shown, the terminal also includes a lower cylindrical portion B, which is vertically spaced from the cylindrical portion A, and a mating portion 38 that bends inward and protrudes downward from the lower cylindrical portion B. The mating portion 38 is used to abut downward against the lower mating element 300. In this embodiment, the cylindrical portion A and the lower cylindrical portion B are symmetrical in the vertical direction, and the contact portion 31 and the mating portion 38 are symmetrical in the vertical direction (of course, in other embodiments, the cylindrical portion A and the lower cylindrical portion B may be asymmetrical in the vertical direction; the contact portion 31 and the mating portion 38 may be asymmetrical in the vertical direction). The cylindrical portion A and the lower cylindrical portion B are connected by an intermediate portion C, and a first protrusion D and a second protrusion E extend in opposite directions from opposite sides of the intermediate portion C. Furthermore, the extension length of the first protrusion D is greater than the extension length of the second protrusion E. When the differential signal terminal S is assembled into the first receiving groove 11, the lower surface of the stop block 112 blocks the corresponding first protrusion D from moving upward, and the second protrusion E of the differential signal terminal S is received in the limiting groove 111. The bottom surface of the limiting groove 111 blocks the corresponding second protrusion E from moving downward. There is a gap between the lower surface of the stop block 112 and the corresponding first protrusion D, and there is a gap between the bottom surface of the limiting groove 111 and the corresponding second protrusion E, so that the differential signal terminal S can move slightly up and down in the first receiving groove 11, increasing the elasticity of the differential signal terminal S.

[0030] like Figure 4 , Figure 5 As shown, each grounding terminal G has a cylindrical portion A surrounded by a metal sleeve 2. The contact portion 31 is higher than the upper end of the metal sleeve 2, and the mating portion 38 is lower than the lower end of the metal sleeve 2. Projected horizontally, the metal sleeve 2 covers the through groove 32. Each metal sleeve 2 is bent into a bend 21 towards the cylindrical portion A. After the grounding terminal G is assembled to the metal sleeve 2, the bend 21 is bent again. The bend 21 is located between the cylindrical portion A and the lower cylindrical portion B to prevent the grounding terminal G from detaching. When the grounding terminal G is pressed by the upper docking element 200 and the lower docking element 300, the cylindrical part A and the lower cylindrical part B respectively abut against the bent part 21. The metal sleeve 2 also has a groove 22 that penetrates downward through the metal sleeve 2. The grounding terminal G is assembled in the metal sleeve 2 from bottom to top. The first protrusion D and the second protrusion E of the grounding terminal G abut against the edge 221 of the groove 22, so that the grounding terminal G is connected to the metal sleeve 2.

[0031] In summary, this utility model has the following beneficial effects:

[0032] 1. Since the contact portion 31 is formed by bending inward from the cylindrical portion A, when the upper mating element 200 presses the contact portion 31 downward to make the contact portion 31 move downward, the outward expansion of the cylindrical portion A during compression deformation can be reduced, the stable contact between the first side edge X and the second side edge Y can be improved, thereby shortening the conduction path of the terminal.

[0033] 2. The distance between the first rib 33 and the second rib 34 gradually increases along the winding direction, which reduces the number of times the terminal is wound. This allows the height of the cylindrical part A to meet the requirements and also shortens the length of the first rib 33 and the second rib 34, thereby shortening the signal transmission path.

[0034] 3. The first protrusion D and the second protrusion E of the grounding terminal G abut against the edge 221 of the groove 22, making the grounding terminal G conductive with the metal sleeve 2. At the same time, after the grounding terminal G contacts the upper docking element 200 and the lower docking element 300, the cylindrical part A and the lower cylindrical part B of the grounding terminal G will abut against the bent part 21 respectively, thereby forming multiple conductive paths between the grounding terminal G and the metal sleeve 2, so that the induced current in the grounding terminal G can quickly flow back to the reference plane.

[0035] The above detailed description is only a description of the preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. An electrical connector, characterized in that, include: A single main body with multiple vertically penetrating receiving slots; Multiple terminals are respectively housed in the receiving slot; Each terminal is formed by winding a metal sheet and has a cylindrical portion and a contact portion that bends inward from the cylindrical portion and protrudes upward. The contact portion is used to abut against an upper mating element. The cylindrical portion has a first side edge and a second side edge spaced apart. The first side edge and the second side edge are inclined in the vertical direction. When the contact portion is pressed downward by the upper mating element, the first side edge and the second side edge come into contact with each other.

2. The electrical connector as described in claim 1, characterized in that: The angle between the contact point of the first side edge and the second side edge and the horizontal plane is less than or equal to 85 degrees and greater than or equal to 60 degrees.

3. The electrical connector as described in claim 1, characterized in that: The contact portion is wound inward from the first side edge. The terminal has a through groove that penetrates the thickness of the cylindrical portion and the thickness of the contact portion. Thus, the contact portion includes an upper section for abutting against the upper docking element, a lower section located below the upper section, and a connecting section connecting the upper and lower sections. The cylindrical portion includes a first rib and a second rib spaced vertically apart, and a connecting rib connecting the first rib and the lower section. The vertical distance between the first rib and the second rib gradually increases along the winding direction. The second rib connects to the upper section, the second side edge is located on the second rib, and the first side edge is located on the connecting rib.

4. The electrical connector as described in claim 3, characterized in that: The cylindrical portion further includes a third rib, which is disposed between the first rib and the second rib, and is spaced vertically from the first rib and the second rib respectively. The third rib is connected to the connecting rib, and the distance between the first rib and the third rib gradually increases along the winding direction.

5. The electrical connector as described in claim 3, characterized in that: A connecting part protrudes upward from the second rib to connect the material strip. After the terminal is flattened, the distance between the connecting rib and the second rib gradually decreases from bottom to top. The part of the second rib that connects the first rib and the connecting part is defined as the first segment, and the part of the second rib that connects the upper segment and the connecting part is defined as the second segment. The second segment and the upper segment are located on the same straight line, and the upper segment and the lower segment are arranged parallel to each other.

6. The electrical connector as claimed in claim 1, characterized in that: The terminals include signal terminals and ground terminals. Each signal terminal also includes a first protrusion and a second protrusion, which extend in opposite directions. Each receiving slot for receiving the signal terminal has a stop and a plurality of limiting slots extending upward through the body. The lower surface of the stop prevents the first protrusion from moving upward. The second protrusion is received in the limiting slot, and the bottom surface of the limiting slot prevents the second protrusion from moving downward.

7. The electrical connector as claimed in claim 1, characterized in that: The device further includes a metal sleeve, and the terminals include a grounding terminal and a signal terminal. The metal sleeve surrounds the cylindrical portion of the grounding terminal. Multiple through slots penetrate the cylindrical portion along the thickness of the cylindrical portion. The contact portion is higher than the upper end of the metal sleeve and is projected in the horizontal direction. The metal sleeve shields the through slots.

8. The electrical connector as claimed in claim 7, characterized in that: Each terminal also has a lower cylindrical portion and a mating portion that bends inward and protrudes downward from the lower cylindrical portion. The cylindrical portion and the lower cylindrical portion are separated vertically and connected by an intermediate portion. The mating portion is used to abut downward against a lower mating element. The mating portion is lower than the lower end of the metal sleeve. The metal sleeve is bent towards the cylindrical portion by a bend. The bend is located between the cylindrical portion and the lower cylindrical portion. When the terminal is pressed by the upper mating element and the lower mating element, the cylindrical portion and the lower cylindrical portion abut against the bend respectively.

9. The electrical connector as claimed in claim 1, characterized in that: The terminals include multiple grounding terminals and multiple pairs of differential signal terminals; one of the differential signal terminals in a pair is rotated 180 degrees symmetrically relative to the other.

10. A terminal formed by winding a metal sheet, characterized in that, include: The cylindrical portion and the contact portion that is rolled inward from the cylindrical portion and protrudes upward are used to abut against an upper abutment element. The cylindrical portion has a first side edge and a second side edge spaced apart. The first side edge and the second side edge are inclined in the vertical direction. When the contact portion is pressed downward by the upper abutment element, the first side edge and the second side edge come into contact with each other.

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