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CN-224232957-U - High-speed card edge connector

CN224232957UCN 224232957 UCN224232957 UCN 224232957UCN-224232957-U

Abstract

The utility model discloses a high-speed card edge connector which comprises a plastic main body, a terminal group and a grounding part, wherein a first slot and a second slot are arranged on the plastic main body, the terminal group comprises a plurality of contact terminals arranged on two sides of the first slot and power terminals arranged on two sides of the second slot, each row of contact terminals comprises signal terminals and grounding terminals which are arranged at intervals, the grounding part is arranged below the terminal group and comprises a grounding strip and a plastic combination part, and two sides of the grounding strip are provided with a plurality of connecting arms which are used for being correspondingly connected with the outer sides of the grounding terminals. The integrated grounding component is fixedly connected with the grounding terminal, so that the integrated grounding component has a large contact area, effectively reduces contact resistance, effectively prevents electromagnetic interference, is not easy to loosen and deform, is stably connected for a long time, reduces resonance between signal terminals, improves signal transmission quality and speed, reduces complexity of the connector, can be quickly assembled and conveniently detected, and is reliable in grounding process due to the adoption of the novel grounding terminal, and secondary connection is realized.

Inventors

  • JIN HAIWEI
  • ZHANG SHUNHUA
  • DENG ZHONGCHENG
  • HUANG KE

Assignees

  • 电连技术股份有限公司

Dates

Publication Date
20260512
Application Date
20250527

Claims (10)

  1. 1. A high speed card edge connector, comprising: The plastic body comprises a first plastic body (1) and a second plastic body (2) embedded in the first plastic body (1), wherein a first slot (101) and a second slot (201) are respectively formed in the first plastic body (1) and the second plastic body (2), and the first slot (101) and the second slot (201) are positioned on the same straight line for plugging a second circuit board (9); The terminal group comprises a plurality of contact terminals (3) arranged on two sides of the first slot (101) and power terminals (4) arranged on two sides of the second slot (201), wherein each row of contact terminals (3) comprises signal terminals (301) and grounding terminals (302) which are arranged at intervals; The grounding component (5) is arranged below the terminal group and is an integrated component comprising a grounding strip (501) and a plastic bonding part (502), and a plurality of connecting arms (5012) which are used for being correspondingly connected with the outer sides of the grounding terminals (302) are distributed on two sides of the grounding strip (501).
  2. 2. A high-speed card edge connector as set forth in claim 1, wherein the contact terminal (3) comprises a holding portion located inside the first slot (101), a pin extending out of the bottom of the first plastic body (1), a terminal body extending into the first slot (101), and an elastic contact portion disposed at the end of the terminal body.
  3. 3. The high-speed card edge connector as set forth in claim 2, wherein the grounding bar (501) comprises a grounding body (5011) and a plurality of connecting arms (5012), the connecting arms (5012) are formed by extending from a left side and a right side of the grounding body (5011) to horizontal and vertical directions in sequence, a first contact surface (5012 a) is arranged on the inner side of the connecting arms (5012) in the vertical direction, a second contact surface (5012 b) is arranged on the outer side of the connecting arms (5012) in the vertical direction, and the first contact surface (5012 a) is fixedly connected with the outer side of the grounding terminal (302) pin.
  4. 4. A high-speed card edge connector as set forth in claim 3, wherein the ground terminal (302) is bent to be substantially L-shaped or Z-shaped and comprises a non-bent leg platform (3022 a) and a bent leg platform (3022 b), wherein the bent leg platform (3022 b) is parallel to the first contact surface (5012 a) and is fixedly connected thereto by welding.
  5. 5. The high-speed card edge connector as set forth in claim 4, wherein the difference between the pin bending platform (3022 b) and the pin unbending platform (3022 a) is the thickness of the connecting arm (5012), and the pin unbending platform (3022 a) and the second contact surface (5012 b) are in the same plane after the grounding terminal (302) pin and the connecting arm (5012) are welded, and are welded with the same wire (10).
  6. 6. A high-speed card edge connector as set forth in claim 3, wherein said plastic bonding portion (502) is embedded in said grounding body (5011), a connection bump (5021) is provided on a side of said plastic bonding portion (502) close to said contact terminal (3), and said connection arms (5012) are protruded from both sides of said plastic bonding portion (502).
  7. 7. A high-speed card edge connector as set forth in claim 3, wherein said grounding body (5011) has a rectangular shape having a thickness, a width not exceeding a sectional arrangement thickness of said contact terminals (3) on both sides, and a length not less than a lateral arrangement width of said contact terminals (3) on both sides.
  8. 8. The high-speed card edge connector as set forth in claim 5, further comprising a rear cover (6), wherein the rear cover (6) is mounted at the bottom of the first plastic main body (1), two rows of through holes (601) for extending pins of the contact terminals (3) are formed in the rear cover (6), concave surfaces (602) for placing the pin bending platforms (3022 b) are further formed in the rear cover (6), and grooves (603) are further formed in one surface, close to the grounding component (5), of the rear cover, and the grooves (603) are connected with the connection bumps (5021) in a matching mode.
  9. 9. The high-speed card edge connector as set forth in any one of claims 2 to 8, wherein a plastic block (7) is provided at the holding portion of each row of contact terminals (3) by insert molding, a fastening portion (701) is further provided on the plastic block (7), and a bayonet (105) matching with the fastening portion (701) is further provided on the side wall of the plastic body.
  10. 10. The high-speed card edge connector as set forth in any one of claims 1 to 8, wherein connecting seats (102) are further provided at both ends of the first plastic body (1), and positioning posts (103) and fixing pieces (104) for fixing the first plastic body (1) to the first circuit board (8) are further provided at the bottom of the first plastic body (1).

Description

High-speed card edge connector Technical Field The present utility model relates to a connector, and more particularly, to a high-speed card edge connector. Background Card edge connectors are used primarily for simple circuit board connections, such as connecting an expansion card of a computer to a motherboard. The connector at that time has simple structure and lower performance requirement. With the development of electronic technology, particularly the development of computer technology and communication technology, there is a higher demand for the performance, reliability, miniaturization, etc. of card edge connectors. For example, in the field of data centers, telecommunications equipment, and the like, connectors are required to support high-speed data transmission and high-density installation. With the continuous increase of signal transmission rate, for example, the signal transmission rate under the specification of pcie4.0 is up to 16Gt/s, and the signal transmission rate under the specification of pcie5.0 is up to 32Gt/s, the card edge connector needs to have better high-frequency transmission performance so as to reduce signal distortion and attenuation. Miniaturization and densification of electronic devices have tended to be miniaturized, thinned, and this has required smaller card edge connectors and finer pin pitches, while also ensuring good electrical and mechanical performance to achieve more functional integration within a limited space. The reliability is enhanced, namely, in the application scenes such as severe industrial environment, automobile environment and the like, the card edge connector needs to have higher reliability, can bear the influence of environmental factors such as vibration, impact, high temperature, humidity and the like, and ensures the stability of connection and the accuracy of signal transmission. In view of the miniaturization requirement of the card edge connector, the pitch of each terminal is continuously reduced, which easily causes Crosstalk phenomenon (cross talk) between conductive terminals, thereby affecting the signal transmission performance of the connector. Therefore, the grounding plate is mounted inside the connector and is connected with the grounding terminal in the conductive terminals to reduce the influence of electromagnetic interference or crosstalk phenomenon on the connector. In the prior art, at least four grounding pieces are respectively connected with a grounding terminal, the grounding pieces are connected in a bayonet connection mode, the grounding pieces are also connected with a shell of a card edge connector in a bayonet connection mode, in actual production of products, the matching precision requirement of the bayonet is high, multiple debugging is needed in the manufacturing process, the processing technology is complex, the connector is inconvenient to assemble and is not beneficial to industrial processing production, and most importantly, the grounding pieces of the bayonet connection have insufficient connection strength, if the clamping quantity is insufficient, the clamping quantity is easy to loosen due to deformation of plastic elements, the connection between the grounding pieces is unstable, the grounding loop of the connector is affected, the anti-electromagnetic interference performance of the connector is affected, in addition, the split grounding pieces have low fault tolerance, poor contact phenomenon occurs, and in the process of fault inquiry, the fault types are more, the fault detection is inconvenient, and a certain difficulty is brought to product detection. In addition, the grounding piece of the elastic connection has limited long-term stability, and the elastic element can have problems of fatigue, deformation and the like in the long-term use process, thereby affecting the reliability of the connection and failing to meet the long-term stable grounding requirement of the card edge connector. Disclosure of utility model In order to make up for the defects, the utility model provides the high-speed card edge connector, so that the connector is connected with the ground to achieve the effects of long-term stable connection, reliable manufacturing process, simple installation, convenient detection and high fault tolerance, thereby effectively avoiding the electromagnetic interference of the connector and really promoting the high-speed and high-quality transmission of data. The technical scheme adopted by the utility model for solving the technical problems is as follows: The high-speed card edge connector comprises a plastic main body, a terminal group and a grounding component, wherein the plastic main body comprises a first plastic main body and a second plastic main body embedded in the first plastic main body, a first slot and a second slot are respectively formed in the first plastic main body and the second plastic main body, the first slot and the second slot are positioned on the same straigh