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CN-224232982-U - Multi-terminal card connector

CN224232982UCN 224232982 UCN224232982 UCN 224232982UCN-224232982-U

Abstract

The utility model provides a multi-terminal card connector which comprises an insulating body, wherein a plurality of terminal grooves are respectively arranged in longitudinal side walls at two sides of a slot of the insulating body, a plurality of terminals are respectively arranged in at least one part of the terminal grooves, double-layer terminals are arranged in the rest terminal grooves, the double-layer terminals comprise a lower-layer terminal and an upper-layer terminal, the thickness of the upper-layer terminal along the longitudinal direction of the insulating body is smaller than that of the lower-layer terminal along the longitudinal direction of the insulating body, and the multi-terminal card connector can enable the characteristic impedance of the lower-layer terminal to be lower, so that the high-frequency performance of the lower-layer terminal is improved.

Inventors

  • CAI YOUHUA
  • LIN HAIYAN

Assignees

  • 深圳市兴万联电子有限公司

Dates

Publication Date
20260512
Application Date
20250408

Claims (10)

  1. 1. A multiple terminal card connector, comprising: The insulation body is provided with a longitudinal slot which is concavely arranged from the top surface and is used for inserting an electronic module, a plurality of terminal slots are respectively arranged in the longitudinal side walls at two sides of the slot, and the least one end of the insulation body is provided with a lug accommodating space and a pin joint part for pin joint of the lug; at least one ear clip pivoted at one end of the insulation body; The terminals are respectively accommodated in corresponding terminal grooves in the two longitudinal side walls in a one-to-one correspondence mode, at least one part of the terminal grooves are internally provided with double-layer terminals, the other terminal grooves are internally provided with single-layer terminals, the double-layer terminals comprise lower-layer terminals and upper-layer terminals, and the thickness of the upper-layer terminals along the longitudinal direction of the insulating body is smaller than that of the lower-layer terminals along the longitudinal direction of the insulating body.
  2. 2. The multiple terminal card connector of claim 1, wherein a lower terminal and an upper terminal in each terminal groove are insert-molded with a plug inserted and fixed in the terminal groove at the position of the double-layered terminal, and wherein each single-layered terminal is fixed in the corresponding terminal groove from the bottom of the insulating body upward in an inserting manner at the position of the single-layered terminal, or one terminal in each terminal groove is insert-molded with a plug inserted and fixed in the terminal groove.
  3. 3. The multiple terminal card connector of claim 1, wherein said upper terminal is inserted and fixed in the terminal slot from the top of the insulating body downward, and the lower terminal is inserted and fixed in the terminal slot from the bottom of the insulating body upward, and the single-layer terminal is inserted and fixed in the terminal slot from the bottom of the insulating body upward or from the top of the insulating body downward.
  4. 4. The connector of claim 3, wherein each of the top surface, the slot-facing surface and the slot-facing surface of the longitudinal side wall has a recessed structure such that the slot for receiving the upper terminal is completely open.
  5. 5. The connector of claim 4, wherein each of the longitudinal side walls has a top surface, a slot-facing surface and a slot-facing surface, each of which is recessed at a position corresponding to the upper terminal to form a first recess, a second recess and a third recess, the first recess, the second recess and the third recess are in communication with the corresponding terminal slot for receiving the upper terminal, the second recess is located above a terminal slot for receiving the lower terminal provided at the slot-facing surface of the longitudinal side wall, the slot-facing side and the slot-facing side of the first recess are in communication with the second recess and the third recess, respectively, the third recess is formed to penetrate down through the bottom of the longitudinal side wall, and the first recess, the second recess and the third recess form the recessed structure.
  6. 6. The connector of claim 5, wherein each of the longitudinal side walls has a surface facing away from the slot and recessed toward the bottom surface of the longitudinal side wall to form a fourth recess, the fourth recess being disposed along the longitudinal direction of the longitudinal side wall, the third recess being in communication with the fourth recess.
  7. 7. The connector of claim 5, wherein a plurality of upper terminals are disposed adjacent to each other in the recess structure, and an independent barrier is formed between each two adjacent terminal grooves of the terminal grooves for accommodating the plurality of upper terminals, wherein the top surface, the slot-facing surface and the slot-facing surface of each independent barrier are lower than the top surface, the slot-facing surface and the slot-facing surface of the longitudinal side wall.
  8. 8. The connector of any one of claims 4 to 6, wherein a plurality of said recessed structures are provided on the top surface of each of said longitudinal side walls at intervals, and a scoop is provided at a position between each adjacent two of the recessed structures, the scoop penetrating the bottom of the longitudinal side wall.
  9. 9. The connector of any one of claims 3 to 7, wherein the lower terminals include fixing portions fixed in the corresponding terminal grooves, the fixing portions extend upward and downward to form upper and lower arm portions, respectively, lower ends of the lower arm portions are bent toward the outside of the insulative housing to form soldered portions of the lower terminals, and upper ends of the upper arm portions protrude toward the slot to form contact portions of the lower terminals.
  10. 10. The connector of any one of claims 3 to 7, wherein the upper terminal comprises an outer arm and an inner arm, the outer arm has a length longer than that of the inner arm, the lower end of the outer arm is bent toward the outside of the insulative housing to form a welded portion of the upper terminal, the upper end of the outer arm is connected to the upper end of the inner arm via a transverse connection portion and forms an inverted U-shaped holding portion held at the upper portion of the insulative housing, the lower end of the inner arm is bent forward and upward to form an elastic arm, and the upper end of the elastic arm is bent toward the slot to form a contact portion of the upper terminal extending into the slot.

Description

Multi-terminal card connector Technical Field The utility model belongs to the field of connectors, and particularly relates to a multi-terminal card connector. Background Chinese patent CN202411745993.5 discloses a high-speed communication storage electric connector, which comprises an insulating body and a plurality of terminals accommodated in the insulating body. The middle part of the top surface of the insulating body is concaved downwards along the longitudinal direction to form a longitudinal slot, longitudinal side walls which are arranged along the length direction of the slot are arranged on two sides of the slot, and a plurality of terminal grooves are formed on the longitudinal side walls on two sides of the slot. The top surface of the longitudinal side wall is downwards recessed at a position corresponding to a terminal groove for accommodating the upper-layer terminal to form a rectangular groove with an open inner side, a plurality of independent barriers are positioned below the rectangular groove, and the outer sides of the independent barriers are connected to the side wall of the rectangular groove close to the outer side of the insulating body. The terminals are respectively accommodated in the corresponding terminal grooves in the two longitudinal side walls in a one-to-one correspondence mode. The terminals in each longitudinal side wall are partially provided with double-layer terminals, namely, at least a part of terminal grooves are provided with double-layer terminals, and the rest terminal grooves are provided with single-layer terminals. The double-layer terminal comprises a lower-layer terminal and an upper-layer terminal, the upper-layer terminal of the double-layer terminal is fixed in the terminal groove in a downward inserting mode from the top of the insulating body, the lower-layer terminal of the double-layer terminal is fixed in the terminal groove in an upward inserting mode from the bottom of the insulating body, the single-layer terminal is fixed in the terminal groove in an upward inserting mode from the bottom of the insulating body, and each single-layer terminal is flush with the lower-layer terminal and forms a row. The upper layer terminal and the lower layer terminal comprise fixing parts fixed in corresponding terminal grooves, and an opening is formed in the middle of each fixing part and used for saving metal materials. The inner side of the fixing part is protruded with a clamping point clamped on the inner wall of the corresponding terminal groove. The fixed part extends upwards and downwards to form an upper arm part and a lower arm part respectively, the lower end of the lower arm part bends towards the inner side of the insulating body to form a welding part, the upper tail end of the upper arm part of the lower-layer terminal protrudes towards the slot side to form a contact part, the upper tail end of the upper arm part of the upper-layer terminal extends towards the slot side to form an upper inclined arm, the tail end of the upper inclined arm bends downwards to form a lower inclined contact arm, the tail end of the lower inclined contact arm is a contact end, and the contact end stretches into the slot. According to the high-speed communication storage electric connector, the number of the terminals is increased by locally arranging the double-layer terminals, so that the signal transmission channels are increased, the signal transmission speed is greatly improved, the upper-layer terminals of the double-layer terminals are fixed in the terminal grooves from top to bottom in a plug-in manner, the lower-layer terminals are fixed in the terminal grooves from bottom to top in a plug-in manner, plugs are not needed, no plug assembly step is needed, high-speed automatic plug-in production can be realized, the cost is reduced, and the yield is improved. The upper and lower terminals of the double-layer terminal have uniform thickness along the longitudinal direction of the insulating body, the characteristic impedance of the lower terminal is high, and the high-frequency performance of the lower terminal is reduced, in addition, a rectangular groove (i.e. a concave structure) with a downward concave opening is formed on the top surface of the longitudinal side wall, the concave structure is not designed on the outer side surface of the longitudinal side wall far away from the slot and the inner side surface facing the slot, so that the terminal groove for accommodating the upper terminal is not completely in an open state, thereby causing difficulty in inserting the upper terminal, and the concave structure is only arranged on the partial position of the top surface of the longitudinal side wall, so that the weight of the insulating body is reduced. Therefore, improvements are needed. Disclosure of utility model The present utility model is directed to a multiple-terminal card connector, which solves the above-mentioned problems. In order to achieve th