Card connector
By setting a spacer and an inclined extension terminal structure on the side wall of the insulating housing of the card connector, the problems of interference between terminals and large insertion force are solved, and the effects of high-frequency transmission and stable insertion are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-04-14
AI Technical Summary
When increasing the number of terminals to improve the transmission rate, existing card connectors have excessively close distances between the outer and inner rows of terminals, causing mutual interference, affecting high-frequency transmission, and requiring excessive insertion force, which is not conducive to the insertion of electronic cards.
A card connector is designed, wherein an outer terminal slot and an inner terminal slot are provided on the side wall of the insulating housing, and there is a gap between the outer terminal slot and the inner terminal slot. The terminals are designed as first and second main force arms and secondary force arms. The insertion force is reduced and the electric field interference is reduced by the gap and the inclined extension structure, ensuring terminal spacing and stable contact.
This reduces insertion force, lowers electric field interference, improves high-frequency transmission rate and signal integrity, and ensures stable insertion and contact of electronic cards.
Smart Images
Figure CN224123541U_ABST
Abstract
Description
[Technical Field]
[0001] This utility model relates to a card connector, and more particularly to a card connector that reduces insertion force and facilitates high-frequency transmission. [Background Technology]
[0002] To achieve higher transmission rates, existing card connectors typically increase the number of terminals in the insulating body. To avoid increasing the length of the insulating body and requiring more installation space, two rows of terminals are usually placed on one side wall of the insulating body. This increases the number of terminals without increasing the side wall length. Furthermore, to minimize the increase in side wall width, the inner row of terminals is closer to the slot, and its spring arms are slightly tilted and bent towards the slot to form a contact portion with the electronic card. The outer row of terminals has its spring arms tilted and bent more significantly towards the slot to form a contact portion with the electronic card. However, this design results in a larger tilt angle for the outer row of terminals and a closer distance between the spring arms and the inner row of terminals, leading to mutual interference between the inner and outer rows of terminals, which is detrimental to high-frequency transmission. Moreover, having two rows of terminals on one side wall means that when the electronic card is inserted into the slot, both the spring arms of the outer and inner rows exert force on the card, increasing the insertion force and hindering card insertion.
[0003] Therefore, it is necessary to provide a new card connector to overcome the above-mentioned defects. [Utility Model Content]
[0004] To address the problems in the prior art, the purpose of this utility model is to provide a card connector with improved terminal and insulating housing structure to reduce insertion force and facilitate high-frequency transmission.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a card connector for interfacing with an electronic card, characterized in that it comprises: an insulating shell, a slot and two side walls located on both sides of the slot, at least one side wall having a plurality of outer terminal slots and a plurality of inner terminal slots, the outer terminal slots and inner terminal slots respectively communicating with the slot, and a gap between the outer terminal slots and inner terminal slots; a plurality of first terminals are received in the plurality of outer terminal slots, a plurality of second terminals are received in the plurality of inner terminal slots, the second terminals are located on the side of the first terminals near the slot, each first terminal includes a first base, a first main arm and a first secondary arm extending obliquely upward from the first base toward the slot at intervals, the first main arm being located between the first secondary arm and the slot, and extending from the upper end of the first main arm along the slot... The device bends and extends towards the slot to form a curved portion. A first abutting section that abuts against the electronic card is provided on the side of the curved portion near the slot. A terminal section extends downward from the first abutting section and inclined away from the slot to form a terminal section. Each second terminal includes a second base. A second main arm and a second auxiliary arm are provided at intervals, extending upward from the second base towards the slot. A second abutting section that contacts the electronic card is provided on the side of the second main arm near the slot. The interval is located between the first main arm and the second auxiliary arm. The interval is not lower than the second main arm and is located below the curved portion. After the electronic card is inserted, the first main arm shifts towards the direction of the first auxiliary arm to abut against the first auxiliary arm, and the second main arm shifts towards the direction of the second auxiliary arm to abut against the side of the second auxiliary arm away from the interval.
[0006] Furthermore, the plurality of second terminals are divided into a plurality of second ground terminals and a plurality of second signal terminals. The second ground terminal includes a second ground pin extending from the second base toward the slot. The second signal terminal includes a second signal pin extending from the second base toward the slot. The extension length of the second ground pin is greater than the extension length of the second signal pin, and the second ground pin is higher than the second signal pin.
[0007] Furthermore, the first auxiliary lever arm is lower than the bending part, and the position where the top of the first auxiliary lever arm abuts against the first main lever arm is the first contact point, which is higher than the bottom of the end segment.
[0008] Furthermore, the first auxiliary lever arm includes a widened portion located above the first contact point, the width of which in the front-back direction is greater than the width of the first auxiliary lever arm at the first contact point.
[0009] Furthermore, the point where the top of the second auxiliary lever arm abuts against the second main lever arm is the second contact point, and the height of the second contact point is approximately the same as that of the second contact segment.
[0010] Furthermore, the minimum distance between the first main arm and the second auxiliary arm in the front-to-back direction is not less than 0.5 mm.
[0011] Furthermore, the spacer includes a first side facing the second auxiliary arm and a second side facing the first main arm. The first main arm extends obliquely from the first base toward the spacer. The second side is an obliquely extended curved surface to make way for the first main arm. The second base abuts against the first side. There is a gap between the top of the second auxiliary arm and the first side.
[0012] Furthermore, a portion of the first main arm's projection along the front-back direction overlaps with the gap portion. The width of the top of the gap portion in the front-back direction is less than the distance between the first and second main arms along the front-back direction. In the vertical direction, the top of the gap portion is approximately flush with the top of the second main arm.
[0013] Furthermore, the outer terminal slot is further recessed into the spacer along the front-back direction. A branch extends from the first base toward the side near the slot, and a first locking point protrudes from the branch. The branch is inserted into the spacer, and the first locking point interferes with and is fixed to the upper wall of the outer terminal slot located in the spacer. A second locking point protrudes from the second base along the front-back direction, and the second locking point interferes with and is fixed to the groove wall of the inner terminal slot located below the slot.
[0014] Furthermore, the number of inner terminal slots on the same sidewall is greater than the number of outer terminal slots. Multiple second terminals are arranged in a row at equal intervals in the left-right direction. Only a portion of the second terminals have first terminals on the side away from the slot. The number of first terminals is equal to the number of outer terminal slots. The outer terminal slots penetrate the sidewall in the front-back direction.
[0015] The beneficial effects of this utility model are as follows: The first terminal extends from the upper end of the first main arm toward the slot to form an extension portion, and the first abutting section is set on the side of the extension portion near the slot. This avoids the situation where the tilt angle of the first main arm is too large and occupies the upper space of the interval portion, providing upward protrusion space for the interval portion, making the interval portion higher than the second terminal. This ensures that the interval portion separates the first terminal and the second terminal in the front-back direction. Moreover, the interval portion is made of insulating plastic material, which makes the electric field strength of the first terminal high on the side of the interval portion away from the slot and low on the side of the interval portion near the slot. That is, the electric field lines of the first terminal become sparse after passing through the interval portion, thereby reducing the far-end crosstalk of the first terminal to the second terminal. Before the electronic card is inserted into the slot, the first main arm and the first auxiliary arm are mutually... The second main arm and the second auxiliary arm are spaced apart from each other. When the electronic card is inserted, only the elastic deformation force of the first main arm and the second main arm acts on the electronic card. The first auxiliary arm and the second auxiliary arm do not apply elastic deformation force to the electronic card, which ensures that the insertion force when the electronic card is inserted is small, making it easy to insert the electronic card. After the electronic card is inserted, the first auxiliary arm abuts against the first main arm, and the second auxiliary arm abuts against the second main arm. The first main arm, the first auxiliary arm, the second main arm, and the second auxiliary arm all apply a holding force to the electronic card at the same time, ensuring stable contact between the electronic card and the first terminal and the second terminal. The distal segment is inclined downward from the first abutting segment and away from the slot. The distal segment is away from the slot and does not contact the electronic card, preventing the first main arm from being deformed by rubbing against the first abutting segment at an inclined angle when the electronic card is pulled out. [Attached Image Description]
[0016] Figure 1 This is a perspective view of the card connector, electronic card, and circuit board of this utility model;
[0017] Figure 2 for Figure 1 Exploded view of the middle plug-in connector;
[0018] Figure 3 for Figure 1 Cross-sectional view of the middle card connector along the front-to-back and up-to-down directions;
[0019] Figure 4 for Figure 3 A sectional front view;
[0020] Figure 5 for Figure 4 A cross-sectional front view after the electronic card has been inserted;
[0021] Figure 6 for Figure 5 A magnified view of part A in the middle;
[0022] Figure 7 for Figure 5 Enlarged view of part B in the middle
[0023]
Detailed Implementation Methods
[0024] 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.
[0025] In this utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.
[0026] like Figure 1 As shown, the card connector 100 of this utility model is used to electrically connect the electronic card 200 to the circuit board 300. The card connector 100 is located above the circuit board 300, and the electronic card 200 is inserted downwards into the card connector 100. In this embodiment, the card connector 100 is specifically a DDR connector. Of course, in other embodiments, it can also be other card connectors 100 such as PCIE or MCIO, which is not limited here.
[0027] like Figure 2 As shown, the card connector 100 includes an insulating housing 1, a plurality of first terminals 2 and a plurality of second terminals 3 disposed on the insulating housing 1, the plurality of second terminals 3 are arranged in two rows at equal intervals in the left and right directions, and only a portion of the second terminals 3 in each row are provided with first terminals 2 on their outer sides.
[0028] like Figure 2As shown, the insulating housing 1 has two towers 11 in the left-right direction, a slot 12 located between the two towers 11, two side walls 13 located on both sides of the slot 12 in the front-back direction, a plurality of outer terminal slots 14, a plurality of inner terminal slots 15, and a plurality of spacers 16 provided on each side wall 13. Specifically, the tower portion 11 extends upward from both ends of the insulating housing 1 in the left and right directions to form the edges for fixing the electronic card 200 at both ends. The slot 12 is recessed downward from the insulating body to accommodate the electronic card 200. Multiple external terminal slots 14 are arranged discontinuously in the left and right direction and communicate with the slot 12. The external terminal slots 14 penetrate the side wall 13 in the front and back direction and are further recessed into the spacer portion 16 in the front and back direction. Multiple internal terminal slots 15 are arranged continuously in the left and right direction and communicate with the slot 12. The internal terminal slots 15 are located on the side of the external terminal slots 14 that are closer to the slot 12. The number of internal terminal slots 15 on the same side wall 13 is greater than the number of external terminal slots 14. Only a portion of the internal terminal slots 15 have external terminal slots 14 on their outer sides. The spacer portion 16 separates the external terminal slots 14 and the internal terminal slots 15 in the front and back direction. The spacer includes a first side surface 161 facing the internal terminal slot 15 and a second side surface 162 facing the external terminal slot 14. The second side surface 162 is an inclined curved surface. Of course, in other embodiments, the plurality of outer terminal slots 14, the plurality of inner terminal slots 15, and the plurality of spacers 16 may also be provided on only one sidewall 13.
[0029] like Figure 3 and Figure 4As shown, multiple first terminals 2 correspond one-to-one with multiple outer terminal slots 14 and are housed in the outer terminal slots 14. The first terminals 2 are formed by cutting metal sheets. Before being installed into the insulating housing 1, the first terminals 2 have a strip (not shown) connected to one side in the front-back direction. When installing the first terminals 2 into the outer terminal slots 14, the strip can be used to insert the first terminals 2 from the outer surface of the side wall 13 in the front-back direction into the outer terminal slots 14, thereby saving assembly space. Each first terminal 2 includes a first base 21, a first main arm 22a and a first secondary arm 22b extending upward from the first base 21 toward the slot 12, a curved portion 23 extending from the upper end of the first main arm 22a toward the slot 12, a first abutting section 24 provided on the side of the curved portion 23 near the slot 12, a terminal section 25 extending downward from the first abutting section 24 toward the slot 12, a widened portion 26 connected to the first secondary arm 22b and located above the first secondary arm 22b, a first pin 27 extending from the first base 21 toward the slot 12, and a branch 211 extending from the first base 21 toward the side near the slot 12, with a first locking point 212 protruding from the branch 211. Specifically, the first main arm 22a faces the second side 162 and extends obliquely from the first base 21 toward the spacer 16. The second side 162 is an obliquely extending curved surface to make way for the first main arm 22a. The first pin 27 extends out of the insulating shell 1 and is electrically connected to the circuit board 300. The support 211 is inserted into the spacer 16. The first locking point 212 interferes with and is fixed to the upper wall of the outer terminal slot 14 located in the spacer 16. The first abutting section 24 enters the slot 12 to contact the electronic card 200. The distal section 25 is inclined downward from the first abutting section 24 and away from the slot 12. The distal section 25 is away from the slot 12 and does not contact the electronic card 200, preventing the electronic card 200 from scraping the first abutting section 24 at an oblique angle when it is pulled out, thus deforming the first main arm 22a. When the electronic card 200 is not inserted into the slot 12, the first main arm 22a and the first auxiliary arm 22b are spaced apart in the front-back direction. The first main arm 22a is closer to the slot 12 than the first auxiliary arm 22b. The height of the spacer 16 is lower than the height of the upper end of the first main arm 22a and the spacer 16 is located below the curved part 23. A portion of the projection of the first main arm 22a in the front-back direction overlaps with the spacer 16 and the tilt trend of the overlapping portion is roughly the same as the tilt trend of the second side 162. The extension dimension of the curved part 23 in the front-back direction is greater than the width of the top of the spacer 16 in the front-back direction.
[0030] like Figure 5 and Figure 6As shown, after the electronic card 200 is inserted, the first main arm 22a shifts towards the first auxiliary arm 22b due to the pushing force of the electronic card 200, and abuts against the first auxiliary arm 22b. The distance between the top of the first auxiliary arm 22b and the first main arm 22a does not exceed the moving distance of the first main arm 22a, ensuring that the first main arm 22a and the first auxiliary arm 22b abut against each other. The abutment point 28 is the first contact point, which is higher than the bottom of the end segment 25. Ideally, the height of the first contact point 28 is approximately equal to the height of the first contact segment 24. The widened portion 26 is located above the first contact point 28, and its width along the front-to-back direction is greater than the width of the first auxiliary arm 22b at the first contact point 28. The widened portion 26 and the curved portion 23 are spaced apart.
[0031] like Figure 2 , Figure 3 and Figure 4 As shown, multiple second terminals 3 are arranged in a row along the left-right direction and housed in an inner terminal slot 15. The second terminals 3 are formed from sheet metal. A spacer 16 is provided between the second terminals 3 and the first terminal 2. The multiple second terminals 3 are divided into second ground terminals 3b and second signal terminals 3a. The second signal terminals 3a and the second ground terminals 3b are arranged alternately along the left-right direction. Each second signal terminal 3a includes a second base 31. A second main arm 32a and a second auxiliary arm 32b extend obliquely upward from the second base 31 toward the slot 12. A second abutment section 33 is provided on the side of the second main arm 32a near the slot 12. A guide section 34 extends obliquely upward from the second abutment section 33 toward the direction away from the slot 12. A second signal pin 35a extends from the second base 31 toward the direction away from the slot 12. A second locking point 311 protrudes along the front-back direction on the side of the second base 31 away from the second auxiliary arm 32b. The structure of the second grounding terminal 3b is roughly the same as that of the second signal terminal 3a. The second grounding terminal 3b includes a second base 31, from which a second main arm 32a and a second auxiliary arm 32b extend upward at an incline toward the slot 12. The second main arm 32a has a second abutment section 33 on the side near the slot 12. A guide section 34 extends upward at an incline away from the slot 12 from the second abutment section 33. A second grounding pin 35b extends from the second base 31 away from the slot 12. A second locking point 311 protrudes in the front-back direction on the side of the second base 31 near the second auxiliary arm 32b. The extension length of the second grounding pin 35b is greater than that of the second signal pin 35a, and the second grounding pin 35b is higher than the second signal pin 35a. The second locking point 311 interferes with and is fixed to the wall of the inner terminal slot 15 located below the slot 12. The guide section 34 guides the electronic card 200 to be inserted downward.
[0032] like Figure 4, Figure 5 and Figure 7 As shown, the second signal pin 35a and the second ground pin 35b extend out of the insulating housing 1 and are electrically connected to the circuit board 300. The second abutment section 33 enters the slot 12 to contact the electronic card 200, and the second abutment section 33 is located directly below the first abutment section 24. When the electronic card 200 is not inserted into the slot 12, the second main arm 32a and the second auxiliary arm 32b are spaced apart in the front-back direction, and the distance between the top of the second auxiliary arm 32b and the second main arm 32a does not exceed the moving distance of the second main arm 32a. The second main arm 32a is closer to the slot 12 than the second auxiliary arm 32b. In the vertical direction, the top of the spacer 16 is approximately flush with the top of the second main arm 32a. The width of the top of the spacer 16 in the front-back direction is less than the distance between the first main arm 22a and the second main arm 32a in the front-back direction. The first side 161 is provided corresponding to the second terminal 3. The second base 31 abuts against the first side 161. There is a gap between the upper end of the second auxiliary arm 32b and the first side 161. The first main arm 22a is located on the side of the second auxiliary arm 32b away from the slot 12. The distance between the first main arm 22a and the second auxiliary arm 32b in the front-back direction is not less than 0.5mm. After the electronic card 200 is inserted, the second main arm 32a is pushed by the electronic card 200 and shifts towards the direction of the second auxiliary arm 32b and abuts against the side of the second auxiliary arm 32b away from the spacer 16, so as to ensure that the second main arm 32a and the second auxiliary arm 32b abut against each other. The position where the second auxiliary arm 32b abuts against the second main arm 32a is the second abutting point 36. The height of the second abutting point 36 is approximately the same as that of the second abutting section 33.
[0033] This utility model has the following beneficial effects:
[0034] 1. The first terminal 2 extends from the upper end of the first main arm 22a toward the slot 12 to form a curved portion 23, and the first abutting section 24 is set on the side of the curved portion 23 near the slot 12. This avoids the situation where the first main arm 22a has an excessively large tilt angle and occupies the upper space of the spacer 16, so that the spacer 16 can be higher than the second terminal 3. This ensures that the spacer 16 separates the first terminal 2 and the second terminal 3 in the front-back direction. The spacer 16 is made of insulating plastic material, so that the electric field strength of the first terminal 2 is high on the side of the spacer 16 away from the slot 12, and low on the side of the spacer 16 near the slot 12. That is, the electric field lines of the first terminal 2 become sparse after passing through the spacer 16, thereby reducing the far-end crosstalk of the first terminal 2 to the second terminal 3. Before the electronic card 200 is inserted into the slot 12, the first main arm 22a and the first auxiliary arm 22b are spaced apart from each other, and the second main arm 32a and the second auxiliary arm 32b are spaced apart from each other. When the electronic card 200 is inserted into the slot 12, the first main arm 22a and the first auxiliary arm 22b are spaced apart from each other. When the card is inserted, only the elastic deformation force of the first main arm 22a and the second main arm 32a acts on the electronic card 200. The first auxiliary arm 22b and the second auxiliary arm 32b do not apply elastic deformation force to the electronic card 200, ensuring that the insertion force of the electronic card 200 is small, which facilitates the insertion of the electronic card 200. After the electronic card 200 is inserted, the first auxiliary arm 22b abuts against the first main arm 22a, and the second auxiliary arm 32b abuts against the second main arm 32a. 2a. The first auxiliary arm 22b, the second main arm 32a, and the second auxiliary arm 32b simultaneously apply a holding force to the electronic card 200 to ensure stable contact between the electronic card 200 and the first terminal 2 and the second terminal 3. The distal segment 25 is inclined downward from the first abutment segment 24 and away from the slot 12. The distal segment 25 is away from the slot 12 and does not contact the electronic card 200, preventing the electronic card 200 from rubbing against the first abutment segment 24 at an inclined angle when it is pulled out, thus deforming the first main arm 22a.
[0035] 2. The extension length and height of the second grounding pin 35b are both greater than those of the second signal pin 35a. The second grounding pin 35b shields the second signal pins 35a located on both sides of the second grounding pin 35b, reducing the influence between two adjacent second signal terminals 3a and improving the transmission rate of the card connector 100.
[0036] 3. The first contact point 28 is located between the bottom of the curved part 23 and the end section 25, ensuring that the impedance value of the lever arm region formed by the first main lever arm 22a and the first secondary lever arm 22b of the first terminal 2 is close to 45Ω, so that the overall impedance of the first terminal 2 is matched and the signal integrity is improved.
[0037] 4. Before inserting the electronic card 200, the gap between the first auxiliary lever arm 22b and the first main lever arm 22a at the first contact point 28 shall not exceed the compression distance of the first main lever arm 22a after the electronic card 200 is inserted, so as to ensure that the first auxiliary lever arm 22b and the first main lever arm 22a are stably contacted after the electronic card 200 is inserted.
[0038] 5. The first terminal 2 is provided with a widened portion 26 located above the first contact point 28. The width of the widened portion 26 in the front-back direction is greater than the width of the first auxiliary lever arm 22b at the first contact point 28. The first auxiliary lever arm 22b is narrow and has a slender structure with a large inductance value and high impedance. The widened portion 26 is located at the upper end of the first auxiliary lever arm 22b, which increases the capacitance and reduces the impedance of the lever arm of the first terminal 2, making the overall impedance of the first terminal 2 more matched, which is more conducive to the transmission of high frequencies.
[0039] 6. The second contact point 36 and the second contact section 33 are approximately the same height. The second contact point 36 and the second contact section 33 can be plated with gold in one electroplating operation, which reduces the number of electroplating operations and optimizes the manufacturing process of the card connector 100.
[0040] 7. Before inserting the electronic card 200, the gap between the second auxiliary arm 32b and the second main arm 32a at the second contact point 36 shall not exceed the compression distance of the second main arm 32a after the electronic card 200 is inserted, so as to ensure that the second auxiliary arm 32b and the second main arm 32a are stably contacted after the electronic card 200 is inserted.
[0041] 8. If the distance between the first terminal 2 and the second terminal 3 is too close, they will interfere with each other and be detrimental to signal transmission. The distance between the first main arm 22a and the second auxiliary arm 32b should not be less than 0.5mm, which can effectively reduce the interference between the first terminal 2 and the second terminal 3 and improve the signal integrity of the card connector 100.
[0042] 9. A gap is left between the top of the second auxiliary lever arm 32b and the first side 161 to allow space for the second auxiliary lever arm 32b to shift outward.
[0043] 10. The second side 162 is an inclined curved surface with the same inclination direction as the first main arm 22a. This not only allows the first main arm 22a to be positioned, but also gradually reduces the amount of plastic around the first main arm 22a. This avoids a sudden decrease in the capacitance of the first main arm 22a, which would lead to a sudden change in impedance. This allows the impedance value of the first arm to change smoothly, which is beneficial for high-frequency signal transmission.
[0044] 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. A card connector for mating with an electronic card, characterized in that, include: An insulating housing is provided with a slot and two side walls located on both sides of the slot. At least one side wall is provided with a plurality of outer terminal slots and a plurality of inner terminal slots. The outer terminal slots and inner terminal slots are respectively connected to the slot. A gap is provided between the outer terminal slots and the inner terminal slots. Multiple first terminals are housed in multiple outer terminal slots, and multiple second terminals are housed in multiple inner terminal slots. The second terminals are located on the side of the first terminals closer to the slot. Each first terminal includes a first base, and a first main arm and a first auxiliary arm extend obliquely upward from the first base toward the slot at intervals. The first main arm is located between the first auxiliary arm and the slot. A curved portion is formed by bending from the upper end of the first main arm in a direction close to the slot. A first abutting section that abuts against the electronic card is provided on the side of the curved portion close to the slot. A terminal segment is formed by extending obliquely downward from the first abutting section in a direction away from the slot. Each second terminal includes a second base, and a second main arm and a second auxiliary arm extend obliquely upward from the second base toward the slot at intervals. A second abutting section that contacts the electronic card is provided on the side of the second main arm close to the slot. A spacer is located between the first main arm and the second auxiliary arm. The spacer is not lower than the second main arm and is located below the curved portion. After the electronic card is inserted, the first main arm shifts toward the direction of the first auxiliary arm to abut against the first auxiliary arm, and the second main arm shifts toward the direction of the second auxiliary arm to abut against the side of the second auxiliary arm away from the gap.
2. The card connector according to claim 1, characterized in that: The multiple second terminals are divided into multiple second ground terminals and multiple second signal terminals. The second ground terminal includes a second ground pin extending from the second base toward the slot. The second signal terminal includes a second signal pin extending from the second base toward the slot. The extension length of the second ground pin is greater than the extension length of the second signal pin, and the second ground pin is higher than the second signal pin.
3. The card connector according to claim 1, characterized in that: The first auxiliary lever arm is lower than the bending part, and the position where the top of the first auxiliary lever arm abuts against the first main lever arm is the first contact point. The first contact point is higher than the bottom of the end section.
4. The card connector according to claim 3, characterized in that: The first auxiliary lever arm includes a widened portion located above the first contact point, the width of which in the front-to-back direction is greater than the width of the first auxiliary lever arm at the first contact point.
5. The card connector according to claim 1, characterized in that: The point where the top of the second auxiliary lever arm meets the second main lever arm is called the second contact point, and the second contact point is at approximately the same height as the second contact segment.
6. The card connector according to claim 1, characterized in that: The minimum distance between the first main arm and the second auxiliary arm in the front-to-back direction shall not be less than 0.5 mm.
7. The card connector according to claim 1, characterized in that: The spacer includes a first side facing the second auxiliary arm and a second side facing the first main arm. The first main arm extends obliquely from the first base toward the spacer. The second side is an obliquely extended curved surface to make way for the first main arm. The second base abuts against the first side. There is a gap between the top of the second auxiliary arm and the first side.
8. The card connector according to claim 1, characterized in that: A portion of the first main arm's projection along the front-to-back direction overlaps with the gap. The top of the gap is narrower in the front-to-back direction than the distance between the first and second main arms along the front-to-back direction. In the vertical direction, the top of the gap is roughly flush with the top of the second main arm.
9. The card connector according to claim 1: the outer terminal slot is further recessed into the spacer in the front-back direction, the first base extends a branch towards the side near the slot, the branch protrudes a first locking point, the branch is inserted into the spacer, and the first locking point interferes with and is fixed to the upper wall of the outer terminal slot located in the spacer; the second base protrudes a second locking point in the front-back direction, and the second locking point interferes with and is fixed to the groove wall of the inner terminal slot located below the slot.
10. The card connector according to claim 1: the number of inner terminal slots on the same sidewall is greater than the number of outer terminal slots, multiple second terminals are arranged in a row at equal intervals in the left-right direction, only a portion of the second terminals are provided with first terminals on the side away from the slot, the number of first terminals is equal to the number of outer terminal slots, and the outer terminal slots penetrate the sidewall in the front-back direction.