Elastic sheet type electric connector

Abstract

The invention discloses an elastic sheet type electric connector. The elastic sheet type electric connector comprises an insulating core body and a plurality of terminals, each terminal comprises a butt joint part, at least one holding part and at least one electric connection part, the plurality of butt joint parts of the plurality of terminals are in butt joint with terminals of a pair of opponent connectors, the holding part is fixed on the insulation core body, and the electric connection part is electrically connected with a circuit board. The plurality of terminals comprise a plurality of differential signal terminal pairs, a plurality of shielding terminals, a pair of power supply terminals and a functional terminal. The electrical connection part of each terminal comprises a pair of elastic arms and a contact arm, the elastic arms are connected to the holding part, the contact arm is connected to the elastic arms to form an electrical loop, and the contact arm is closer to the circuit board than the elastic arms and is in contact with a welding pad of the circuit board. The extending direction of the electrical connection part intersects with the extending direction of the butt joint part and the extending direction of the holding part.

Description

Technical Field

[0001] The present invention relates to the technical field of an electrical connector, and more particularly to a spring-type electrical connector that forms an electrical connection with a solder pad of a circuit board by using a spring-type structure. Background Art

[0002] Electrical connectors are used to connect different electronic components or modules so that electronic signals can be transmitted between different electronic components or modules through the electrical connectors. Some electrical connectors are installed on circuit boards to form electrical connections with the circuit boards. The terminals of existing electrical connectors form electrical connections with the circuit boards in a direct plug-in structure or a surface mounted structure. The terminals of existing electrical connectors form electrical connections with the solder pads of the circuit boards in the form of columnar solder pins.

[0003] As electrical connectors enter the era of high-speed transmission, the frequency of electronic signals is getting higher and higher. When high-frequency signals pass through columnar solder pins, they are prone to emit electromagnetic waves due to electromagnetic effects caused by the alternating electric fields of the signals. The emitted electromagnetic waves are likely to affect the electronic signals of other parts of the electrical connectors, causing crosstalk and signal distortion. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a spring-type electrical connector, which uses the part connected to the circuit board to form an electrical circuit. When the electric field alternates at a high frequency, it can guide the electric field back to the terminal to avoid forming an antenna effect and emitting electromagnetic waves, causing electromagnetic interference, and solving the problems of crosstalk and signal distortion caused by electrical connectors in the prior art when transmitting high-frequency signals.

[0005] The present invention provides a spring-type electrical connector, comprising an insulating core and a plurality of terminals. Each terminal comprises a docking portion, at least one retaining portion and at least one electrical connection portion, the plurality of docking portions of the plurality of terminals dock with the terminals of a pair of hand connectors, the retaining portion is fixed to the insulating core, the electrical connection portion is electrically connected to a circuit board, and the plurality of terminals comprise a plurality of pairs of differential signal terminals, a plurality of shielding terminals, a pair of power terminals and a plurality of functional terminals. The electrical connection portion of each terminal comprises a pair of elastic arms and a contact arm, the elastic arms are connected to the retaining portion, the contact arms are connected to the elastic arms and form an electrical circuit, the contact arms are closer to the circuit board than the elastic arms and the contact arms contact the solder pads of the circuit board. The extension direction of the electrical connection portion intersects with the extension directions of the docking portion and the retaining portion.

[0006] In another embodiment, the mating portions of the plurality of terminals are arranged into a first row and a second row parallel to each other along a first direction, the retaining portions and the electrical connection portions of the plurality of terminals are arranged in a row along the first direction, and at least one shielding terminal, functional terminal or / and retaining portion or / and electrical connection portion of a power terminal is arranged between the retaining portions or / and the electrical connection portions of two differential signal terminal pairs.

[0007] In another embodiment, the docking portion of at least one shielding terminal is located in the first column, and the docking portion of at least one shielding terminal is located in the second column, and the retaining portion of the shielding terminal whose docking portion is located in the first column includes two first branch portions, one of which is connected to the electrical connection portion, and the other first branch portion is connected to the retaining portion of the shielding terminal whose docking portion is located in the second column.

[0008] In another embodiment, the other first bifurcated portion of the retaining portion is a retaining portion of the shielding terminal whose docking portion is located in the second row, which is engaged with the retaining portion by means of a locking structure.

[0009] In another embodiment, the shielding terminal with the mating portion located in the second row includes two second forked portions, each of which is connected to an electrical connecting portion, wherein one of the second forked portions is connected to a first forked portion of the retaining portion with the mating portion located in the first row.

[0010] In another embodiment, the mating portions of the plurality of differential signal terminals, the at least one shielding terminal, the power terminal, and the plurality of functional terminals have the same length.

[0011] In another embodiment, the insulating core includes a tongue portion, a fixing portion and a retaining portion, the tongue portion and the fixing portion form an integrated structure, the retaining portion is engaged with the fixing portion, the docking portions of the plurality of terminals are arranged on the tongue portion, and the first row and the second row of the docking portions are respectively located on two opposite surfaces of the tongue portion, the fixing portions of the plurality of terminals are arranged on the fixing portion, and the electrical connection portion is arranged on the retaining portion.

[0012] In another embodiment, one end of the retaining portion away from the tongue portion has a plurality of accommodating grooves, and the electrical connecting portions of the plurality of terminals are accommodated in the accommodating grooves.

[0013] In another embodiment, it also includes a metal shell, one end of the metal shell is connected to the insulating core, the metal shell has a accommodating space, the plurality of terminals are arranged in the accommodating space, and the other end of the metal shell forms a pair of interfaces, which are connected to the accommodating space.

[0014] In another embodiment, it further includes a metal reinforcement member connected to one side of the metal shell, the metal reinforcement member includes a pair of wing plate parts, each wing plate part has a bolt hole and a positioning hole.

[0015] The spring-type electrical connector of the present invention forms a structure in which a pair of elastic arms and contact arms are connected to the electrical connection portion of the terminal of the electrical connector, so that the elastic arms and the contact arms form an electrical circuit. When the electric field alternates at a high frequency, the electric field can be guided back to the terminal to avoid the formation of an antenna effect and the emission of electromagnetic waves, which causes electromagnetic interference, thereby solving the problems of crosstalk and signal distortion caused by electrical connectors in the prior art when transmitting high-frequency signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of an embodiment of a spring-type electrical connector of the present invention.

[0017] Figure 2 yes Figure 1 A three-dimensional view of the spring-type electrical connector from another perspective.

[0018] Figure 3 yes Figure 1 A three-dimensional exploded view of a spring-type electrical connector.

[0019] Figures 4 to 10 It is a schematic diagram of the assembly of the spring-type electrical connector of the present invention.

[0020] Description of reference numerals: 1-spring-type electrical connector; 10-insulating core; 11-tongue plate; 12-fixing portion; 13-holding portion; 20-terminal; 21-joining portion; 21a, 21c, 21e, 21g, 21i, 21k, 21m, 21o, 21q, 21s-joining portion; 21b, 21d, 21f, 21h, 21j, 21l, 21n, 21p, 21r-joining portion; 22-holding portion; 22A, 22B- A bifurcation; 22C, 22D-a second bifurcation; 22'-anchoring protrusion; 22"-anchoring groove; 23-electrical connection portion; 30-metal shell; 31-anchoring spring; 40-metal reinforcement; 41-wing plate portion; 42-bolt hole; 43-positioning hole; 131-accommodating groove; 231-elastic arm; 232-contact arm; L1-first direction; A-first row; B-second row; O-docking port; P-circuit board; P1-soldering pad; S-accommodating space. DETAILED DESCRIPTION

[0021] See also Figure 1 , Figure 2 and Figure 3 , which represents an embodiment of the spring-type electrical connector of the present invention. The spring-type electrical connector 1 of this embodiment is a female electrical connector of a High Definition Multimedia Interface (HDMI). The spring-type electrical connector 1 of this embodiment includes an insulating core 10, a plurality of terminals 20, a metal shell 30 and a metal reinforcement 40. The plurality of terminals 20 are disposed on the insulating core 10, the metal shell 30 is snap-fitted and positioned on the insulating core 10 and covers the insulating core 10 and the terminals 20, and the metal reinforcement 40 is welded and fixed to the metal shell 30 to strengthen the structure of the spring-type electrical connector 1.

[0022] See also Figure 4 and Figure 5The terminal 20 is formed by stamping and bending a metal strip. Each terminal 20 includes a docking portion 21, at least one retaining portion 22, and at least one electrical connection portion 23. The docking portion 21 of the terminal 20 docks with a terminal of a counterpart connector. The docking portions 21 of the terminals 20 of this embodiment are arranged in a first row A and a second row B parallel to each other along a first direction L1. The first row A of the docking portion 21 includes docking portions 21a, 21c, 21e, 21g, 21i, 21k, 21m, 21o, 21q, and 21s, which respectively correspond to the positive differential signal pin (pin 1) of channel 2, the negative differential signal pin (pin 3) of channel 2, the shield pin (pin 5) of channel 1, the positive differential signal pin (pin 7) of channel 0, the negative differential signal pin (pin 9) of channel 0, the timing signal shield pin (pin 11), the CEC channel pin (pin 13), the SCL pin (pin 15), the ground pin (pin 17), and the hot plug detection pin (pin 19) defined in the HDMI specification. The second row B of the docking portion 21 includes docking portions 21b, 21d, 21f, 21h, 21j, 21l, 21n, 21p, and 21r, which respectively correspond to the shielding pin (pin 2) of channel 2, the positive differential signal pin (pin 4) of channel 1, the negative differential signal pin (pin 6) of channel 1, the shielding pin (pin 8) of channel 0, the positive differential signal pin of timing (pin 10), the negative differential signal pin of timing (pin 12), the reserved unused pin (pin 14), the SDA pin (pin 16), and the power pin (pin 18) defined in the HDMI specification.

[0023] The holding portion 22 is fixed to the insulating core 10 to position the terminal 20. The holding portions 22 of the terminal 20 of this embodiment are arranged in a row along the first direction L1. The fixed portion 22 of the terminal 20 corresponding to the docking portion 21e (shielding terminal) of the first row A of this embodiment is divided into two first bifurcated portions 22A and 22B, wherein the first bifurcated portion 22A is connected to its electrical connection portion 23 and forms an integrated structure, and the other first bifurcated portion 22B is shorter in length and connected to the fixed portion 22 of the terminal 20 corresponding to the docking portion 21b. The first fork portion 22B is connected to the fixing portion 22 of the terminal 20 corresponding to the docking portion 21b by a snap-fit ​​structure, wherein the first fork portion 22B forms a trident-shaped snap-fit ​​protrusion 22', and the fixing portion 22 of the terminal 20 corresponding to the docking portion 21b (shielding terminal) forms a snap-fit ​​groove 22", and the snap-fit ​​protrusion 22' is snap-fitted to the snap-fit ​​groove 22", so that the first fork portion 22B is connected to the fixing portion 22 of the terminal 20 corresponding to the docking portion 21b. The fixing portion 22 of the terminal 20 corresponding to the docking portion 21k of this embodiment also has the same structure as the terminal 20 corresponding to the docking portion 21e, namely, two first fork portions 22A and 22B, wherein the first fork portion 22A is connected to its electrical connection portion 23, and the other first fork portion 22B is connected to the fixing portion 22 of the terminal 20 corresponding to the docking portion 21h.

[0024] The fixed portion 22 of the terminal 20 corresponding to the docking portion 21b of the second column B of this embodiment is divided into two second branching portions 22C and 22D, and the two second branching portions 22C and 22D are respectively connected to an electrical connection portion 23. The second branching portion 22C forms the above-mentioned engaging groove 22" and is engaged with the first branching portion 22B of the fixed portion 22 of the terminal 20 corresponding to the docking portion 21e. The fixed portion 22 of the terminal 20 corresponding to the docking portion 21h of the second column B is divided into two first branching portions 22A and 22B, wherein the first branching portion 22A is connected to its electrical connection portion 23 and forms an integrated structure, and the other first branching portion 22B is shorter in length and is connected to the first branching portion 22A of the fixed portion 22 of the terminal 20 corresponding to the docking portion 21e.

[0025] The fixing portion 22 of the terminal 20 (shielding terminal) corresponding to the docking portion 21 of the first column A forms two first branching portions 22A and 22B and is connected to the fixing portion 22 of the terminal 20 (shielding terminal) corresponding to the docking portion 21 of the second column B. Among the fixing portions 22 arranged along the first direction L1, at least one shielding terminal, functional terminal or / and a power terminal is arranged between the fixing portions 22 of the two differential signal terminal pairs. Since the electrical connection portion 23 corresponds to the fixing portion 22 one-to-one, at least one shielding terminal, functional terminal or / and a power terminal is arranged between the electrical connection portions 23 of the two differential signal terminal pairs. This plays the role of electromagnetic shielding and can prevent crosstalk between the differential signal terminal pairs.

[0026] like Figure 2 and Figure 5 As shown, the electrical connection portion 23 is perpendicular to the fixing portion 22, and the electrical connection portion 23 is electrically connected to a circuit board P. The electrical connection portion 23 of each terminal 20 includes a pair of elastic arms 231 and a contact arm 232, the elastic arm 231 is connected to the fixing portion 22, the contact arm 232 is connected to the elastic arm 231 and is located between the pair of elastic arms 231 to form an electrical circuit, the contact arm 232 is closer to the circuit board P than the elastic arm 231, and the contact arm 232 contacts the pad P1 of the circuit board P. The electrical circuit formed by the elastic arm 231 and the contact arm 232 can guide the electric field back to the terminal 20 when the electric field alternates at a high frequency, so as to avoid the formation of an antenna effect and the emission of electromagnetic waves, causing electromagnetic interference.

[0027] See also Figure 6 , Figure 7 and Figure 8 , and please also refer to Figures 1 to 3 The insulating core 10 includes a tongue portion 11, a fixing portion 12 and a retaining portion 13. The tongue portion 11 and the fixing portion 12 form an integrated structure, and the retaining portion 13 is engaged with the fixing portion 12. The docking portion 21 of the terminal 20 is arranged on the tongue portion 11, and the first column A and the second column B of the docking portion 21 are respectively located on two opposite surfaces of the tongue portion 11. The fixing portion 22 of the terminal 20 is arranged on the fixing portion 12. Through the embedded injection molding process, the docking portion 21 of the terminal 20 is positioned on the tongue portion 11 and the fixing portion 22 is positioned on the fixing portion 12. The retaining portion 13 is shaped like a rear cover. The retaining portion 13 is engaged with the fixing portion 12 through a snap-fit ​​structure, and the end of the retaining portion 13 away from the tongue portion 11 has a plurality of accommodating grooves 131. The electrical connection portion 23 of the terminal 20 is accommodated in the accommodating grooves 131 and exposed from the retaining portion 13.

[0028] See also Fig. 9The spring-type electrical connector 1 of this embodiment further includes a metal shell 30, one end of which is connected to the insulating core 10, and the metal shell 30 is engaged with the slot of the insulating core 10 through the engagement spring 31, so as to be positioned on the insulating core 10. The metal shell 30 covers the tongue plate portion 11 and the fixing portion 12 of the insulating core 10, and an accommodating space S is formed inside the metal shell 30, and the terminal 20 is arranged on the tongue plate portion 11 and is thus located in the accommodating space S. The other end of the metal shell 30 forms a pair of interfaces O, and the interface P is connected to the accommodating space S. The counterpart connector is inserted into the accommodating space S through the interface O, and the terminal of the counterpart connector contacts the docking portion 21 of the terminal 20 to form an electrical connection.

[0029] See also Fig.10 The leaf spring type electrical connector 1 of this embodiment further includes a metal reinforcement 40, which is connected to the metal housing 30. The metal reinforcement 40 of this embodiment is fixed to one side of the metal housing 30 by a laser welding process, and is used to strengthen the structure of the metal housing 30. The metal reinforcement 40 includes a pair of wing plate portions 41, each wing plate portion 41 has a bolt hole 42 and a positioning hole 43, and the metal reinforcement 40 can lock and fix the metal housing 30 on the electronic device.

[0030] The spring-type electrical connector of the present invention forms a structure in which a pair of elastic arms and contact arms are connected to the electrical connection portion of the terminal of the electrical connector, so that the elastic arms and the contact arms form an electrical circuit. When the electric field alternates at a high frequency, the electric field can be guided back to the terminal to avoid the formation of an antenna effect and the emission of electromagnetic waves, which causes electromagnetic interference, thereby solving the problems of crosstalk and signal distortion caused by electrical connectors in the prior art when transmitting high-frequency signals.

[0031] The above description is only a preferred embodiment of the present invention, and it cannot be used to limit the scope of the implementation of the present invention. That is, all simple equivalent changes and modifications made according to the claims and the description of the present invention are still within the scope of the present invention. In addition, any embodiment or claim scope of the present invention does not have to achieve all the purposes, advantages or features provided by the present invention. In addition, the abstract and the title are only used to assist in searching patent documents, and are not used to limit the scope of the present invention. In addition, the terms "first", "second", etc. mentioned in this specification or claims are only used to name the name of the element or distinguish different embodiments or scopes, and are not used to limit the upper or lower limit of the number of elements.

Claims

1. A spring-type electrical connector, characterized in that: include: an insulating core; and A plurality of terminals, each terminal comprising a mating portion, at least one retaining portion and at least one electrical connection portion, the plurality of mating portions of the plurality of terminals mating with terminals of a pair of opposing connectors, the retaining portion being fixed to the insulating core, the electrical connection portion being electrically connected to a circuit board, the plurality of terminals comprising a plurality of pairs of differential signal terminals, a plurality of shielding terminals, a power terminal and a plurality of functional terminals; The electrical connection portion of each terminal includes a pair of elastic arms and a contact arm, the pair of elastic arms are connected to the holding portion, the contact arm is connected to the elastic arm and forms an electrical circuit, the contact arm is closer to the circuit board than the elastic arm and the contact arm contacts the solder pad of the circuit board; The extension direction of the electrical connection portion intersects with the extension directions of the docking portion and the fixing portion.

2. The spring-type electrical connector according to claim 1, characterized in that: The mating portions of the plurality of terminals are arranged into a first row and a second row parallel to each other along a first direction, the retaining portions and the electrical connecting portions of the plurality of terminals are arranged in a row along the first direction, and at least one of the shielding terminals, at least one of the functional terminals or / and the retaining portion or / and the electrical connecting portion of the power terminal are arranged between the retaining portions or / and the electrical connecting portions of two pairs of the differential signal terminals.

3. The spring-type electrical connector according to claim 2, characterized in that: The docking portion of at least one of the shielding terminals is located in the first column, and the docking portion of at least one of the shielding terminals is located in the second column, and the retaining portion of the shielding terminal whose docking portion is located in the first column includes two first branching portions, one of which is connected to the electrical connection portion, and the other of which is connected to the retaining portion of the shielding terminal whose docking portion is located in the second column.

4. The spring-type electrical connector according to claim 3, characterized in that: The other first bifurcated portion of the retaining portion is engaged with the retaining portion of the shielding terminal of the second row of the docking portion by a locking structure.

5. The spring-type electrical connector according to claim 3, characterized in that: The shielding terminal whose mating portion is located in the second row includes two second forked portions, each of which is connected to one of the electrical connecting portions, wherein one of the second forked portions is connected to one of the first forked portions of the retaining portion whose mating portion is located in the first row.

6. The spring-type electrical connector according to claim 1, characterized in that: The mating parts of the plurality of pairs of differential signal terminals, the plurality of shielding terminals, the power terminal and the plurality of functional terminals have the same length.

7. The spring-type electrical connector according to claim 1, characterized in that: The insulating core includes a tongue portion, a fixing portion and a retaining portion, the tongue portion and the fixing portion form an integrated structure, the retaining portion is engaged with the fixing portion, the docking portion of the plurality of terminals is arranged on the tongue portion, and the first row and the second row of the docking portion are respectively located on two opposite surfaces of the tongue portion, the fixing portion of the plurality of terminals is arranged on the fixing portion, and the electrical connection portion is arranged on the retaining portion.

8. The spring-type electrical connector according to claim 6, characterized in that: One end of the retaining portion away from the tongue plate portion is provided with a plurality of accommodating grooves, and the electrical connecting portions of the plurality of terminals are accommodated in the accommodating grooves.

9. The spring-type electrical connector according to claim 1, characterized in that: It also includes a metal shell, one end of which is connected to the insulating core, the metal shell has a containing space, the plurality of terminals are arranged in the containing space, and the other end of the metal shell forms a pair of interfaces, which are connected to the containing space.

10. The spring-type electrical connector according to claim 8, characterized in that: The invention also comprises a metal reinforcement piece connected to one side of the metal shell. The metal reinforcement piece comprises a pair of wing plate parts. Each of the wing plate parts has a bolt hole and a positioning hole.

Images