Card edge connector

Abstract

The utility model relates to a card edge connector for inserting an electronic card, comprising an insulating body, a terminal, an ear buckle and a lock pin, one end of the insulating body is provided with a tower, the tower is provided with a first sliding groove, the ear buckle is rotatably connected to the tower, the ear buckle rotates between a locking position and an unlocking position, the ear buckle is provided with a second sliding groove, the lock pin is inserted into the first sliding groove and the second sliding groove, the ear buckle rotates relative to the insulating body to move the lock pin between a first position and a second position in the first sliding groove, the lock pin is inserted into the electronic card when located at the first position, and the lock pin is separated from the electronic card when located at the second position. The trajectory of the lock pin inserted into or separated from the electronic card translates along the first sliding groove instead of rotating along the ear buckle, so there is no need to consider the problem that the structure of the ear buckle fixed to the electronic card interferes with the electronic card due to the close distance, the limiting gap of the lock pin to the electronic card is reduced, the stability of the lock to the electronic card is improved, and the transmission of high-speed signals is ensured.

Description

[Technical Field]

[0001] This utility model relates to the field of card edge connector technology, and in particular to a card edge connector that improves the locking effect of electronic cards. [Background Technology]

[0002] A card edge connector is a connector that electrically connects to an electronic card. A card edge connector typically includes an insulating body, terminals, and an ear clip. The insulating body has a slot for inserting the electronic card. The terminals are electrically connected to the electronic card inserted into the slot to ensure data signal transmission. The ear clip is rotatably connected to the insulating body. The ear clip switches between a stop position and a release position by rotation. When the ear clip rotates to the stop position, it limits the electronic card to prevent it from falling out of the slot. When the ear clip rotates to the release position, it releases the limit on the electronic card, allowing the electronic card to be removed from the slot, thus enabling the installation and removal of the electronic card.

[0003] The existing ear clip limits the electronic card by directly contacting it. However, since the ear clip itself needs to rotate relative to the insulated body, a certain height gap needs to be reserved between the ear clip and the electronic card to avoid interference that would prevent the electronic card from being inserted or removed. When the ear clip is in the stopping position, the height gap allows the electronic card to have a certain free displacement stroke. That is, the electronic card will only be stopped by the ear clip after moving a certain distance. In a vibration environment, the electronic card is easily scratched. The card edge connector has a poor locking effect on the electronic card and is also prone to poor electrical contact of the electronic card, which makes it impossible to achieve high-speed signal transmission.

[0004] Therefore, it is necessary to design an improved card edge connector to overcome the above problems. [Utility Model Content]

[0005] To address the problems faced by the prior art, the present invention aims to provide a card edge connector. By inserting a locking pin between the insulating body and the ear loop, the rotation of the ear loop causes the locking pin to move within the first sliding groove. The locking pin limits the electronic card, eliminating the need for a pre-reserved height gap in the ear loop, thereby reducing the gap between the locking pin and the electronic card. This solves the problem of poor electronic card locking effect and ensures the transmission of high-speed signals.

[0006] To achieve the above objectives, the present invention employs the following technical means:

[0007] A card edge connector for inserting an electronic card, comprising:

[0008] An insulating body, wherein the insulating body is provided with a downwardly recessed slot, and a tower is provided at one end of the insulating body along the left-right direction, and the tower is provided with a first sliding groove;

[0009] A terminal is housed in the insulating body, the terminal at least partially protruding into the slot, and the terminal is used for electrical connection with the electronic card;

[0010] An ear clip, rotatably connected to the tower, rotates between a locked position and an open position, and is provided with a second sliding groove; and

[0011] A locking pin is inserted into the first and second slide grooves. The ear clip rotates relative to the insulating body, causing the locking pin to move from a first position to a second position within the first slide groove. The first slide groove is configured to allow the locking pin to move relative to the insulating body at least in the left-right direction, and the second slide groove is configured to allow the locking pin to move relative to the ear clip at least in the up-down direction. When the ear clip rotates to the locked position, the locking pin is located at the first position within the first slide groove and engages with the notch of the electronic card. When the ear clip rotates to the open position, the locking pin moves to the second position in the left-right direction and disengages from the notch of the electronic card. In the left-right direction, the first position is closer to the slot than the second position.

[0012] In one embodiment, the first groove extends downward at an angle from one end away from the slot to one end closer to the slot, and the height of the locking pin at the first position is lower than the height of the locking pin at the second position.

[0013] In one embodiment, the tower portion is inserted upward into the ear clip, and a limiting surface is provided on the top of the tower. When the ear clip is rotated to the open position, the inner sidewall of the ear clip abuts against the limiting surface.

[0014] Wherein, the limiting surface extends obliquely upward from the end away from the slot to the end closer to the slot; the first slide groove has an extension surface opposite each other in the vertical direction, the angle between the extension surface and the horizontal line extending in the horizontal direction is α, the angle between the limiting surface and the horizontal line extending in the horizontal direction is β, then 0.5β≤α≤1.5β.

[0015] In one embodiment, a protrusion is provided on one inner wall surface of the first slide along the vertical direction. When the locking pin moves to a first position in the first slide, the protrusion blocks the locking pin on the side away from the slot.

[0016] In one embodiment, the protrusion has an arc-shaped cross-section, and the width of the protrusion gradually decreases from the inner wall of the first groove toward the interior of the first groove.

[0017] In one embodiment, the ear clip includes a lever portion, a connecting plate connected to the lever portion, and a top portion connected to the connecting plate. The connecting plate is rotatably connected to the tower. The second slide groove is disposed on the connecting plate. The first slide groove on the tower and the second slide groove on the connecting plate are at least partially aligned in the front-back direction.

[0018] In one embodiment, an assembly groove is provided on the side wall of the lever, the assembly groove extends in the front-rear direction, a third sliding groove is provided on the inner wall surface of the assembly groove, the third sliding groove is connected to the assembly groove, the setting position and shape and size of the third sliding groove are corresponding to the second sliding groove, and the locking pin passes through the assembly groove, passes through the third sliding groove and enters the first sliding groove and the second sliding groove.

[0019] In one embodiment, a pivot is provided on the side of the connecting plate, and the pivot is pivotally connected to the tower; the ear buckle also includes a fastening part connected to the connecting plate, the fastening part is located on the outside of the pivot, and when the ear buckle is rotated to the locking position, the fastening part engages with the tower.

[0020] In one embodiment, the locking pin includes an insert portion and a limiting portion connected to one end of the insert portion; the insert portion is cylindrical and is received in the third slide groove, the second slide groove and the first slide groove; the cross-sectional area of ​​the limiting portion is larger than the cross-sectional area of ​​the insert portion, and the limiting portion abuts against the inner wall surface of the assembly groove.

[0021] The lever part is provided with a slot, which is arranged opposite to each other on both sides of the assembly groove. A stop plate is inserted into the slot, and the stop plate engages with the lever part. The stop plate stops at the end of the limiting part.

[0022] In one embodiment, the tower includes two upwardly extending support plates, which are arranged opposite to each other on both sides of the connecting plate; the number of fastening parts is two, and the two fastening parts are respectively arranged on the side of the support plates away from the connecting plate. The fastening parts on both sides are provided with opposing extending locking blocks. When the ear is in the locked position, the locking blocks engage with the side of the support plate away from the connecting plate.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The locking pin is inserted into the first slide groove of the tower and the second slide groove of the latch. The first slide groove allows the locking pin to move relative to the insulating body at least in the left-right direction, and the second slide groove allows the locking pin to move relative to the latch at least in the up-down direction. When the latch rotates, the top of the latch will generate a displacement in the up-down direction. The locking pin can avoid the problem of excessive distance between the locking pin and the notch edge of the electronic card due to synchronous up-down displacement with the top of the latch by displacing relative to the latch along the second slide groove. When the latch rotates, the top of the latch will also generate a displacement in the left-right direction. The displacement of the top of the latch in the left-right direction will cause the locking pin to move in the left-right direction in the first slide groove. Thus, the latch can provide the force required for the locking pin to move in the left-right direction, so that when the latch rotates from the open position to the locked position, the locking pin moves in the left-right direction to the first position in the first slide groove and engages in the notch of the electronic card. The electronic card is locked. When the ear loop rotates from the locked position to the open position, the locking pin moves to the second position in the left-right direction and disengages from the notch of the electronic card to unlock the electronic card smoothly. That is, the movement trajectory of the locking pin is limited by the first slide groove set on the tower. Compared with the traditional method of blocking the electronic card by the locking structure on the ear loop itself, the locking pin does not need to engage or disengage from the electronic card along the rotation trajectory of the ear loop. The locking pin can engage or disengage from the electronic card along the translation trajectory of the first slide groove. Therefore, it avoids the problem that the ear loop itself fixes the electronic card, resulting in a large gap with the electronic card, which leads to poor locking effect, or a small gap, which causes mutual interference with the electronic card. This application reduces the limiting gap of the electronic card by setting the locking pin, reduces the shaking amplitude of the electronic card in the slot, avoids the electronic card being scratched, improves the locking effect of the electronic card, and ensures the transmission of high-speed signals.

[0025] 2. The first slide extends downward at an angle from the end furthest from the slot toward the end closest to the slot. The height of the locking pin at the first position is lower than the height of the locking pin at the second position. This causes the locking pin to gradually approach the notch edge of the electronic card as the ear buckle rotates toward the slot and pushes the locking pin along the first slide towards the slot. This further reduces the gap height between the locking pin and the notch edge of the electronic card, thereby further improving the locking effect on the electronic card.

[0026] 3. A limiting surface is provided at the top of the tower. The limiting surface can abut against the inner wall of the ear buckle to limit the maximum rotation angle of the ear buckle. That is, the angle between the limiting surface and the horizontal line extending in the left and right direction will affect the rotation angle of the ear buckle. The larger the angle between the first slide groove and the horizontal line extending in the left and right direction, the closer the locking pin can get to the electronic card when it moves along the first slide groove. The smaller the angle between the first slide groove and the horizontal line extending in the left and right direction, the less resistance the locking pin has to move along the first slide groove, and the easier it is for the user to push the ear buckle to rotate. The first slide groove has an extension surface facing each other in the vertical direction. By setting the angle between the extension surface and the horizontal line extending in the left and right direction as α, and the angle between the limiting surface and the horizontal line extending in the left and right direction as β, then 0.5β≤α≤1.5β is used to ensure that the gap height between the locking pin and the electronic card is reduced while avoiding excessive resistance to the movement of the locking pin in the first slide groove, making the disassembly and assembly operations easier and more convenient.

[0027] 4. A protrusion is provided on the inner wall of the first slide groove. When the locking pin moves to the end of the first slide groove near the slot, the protrusion blocks the side of the locking pin away from the slot, thereby increasing the holding force that keeps the locking pin in the position of the first slide groove near the slot, improving the locking pin's ability to keep the electronic card in a stop and limit position, preventing the locking pin from slipping due to vibration and releasing the stop on the electronic card, and further improving the stability of the card edge connector for the electronic card latch.

[0028] 5. An assembly groove is provided on the side wall of the lever part, and a third sliding groove is provided on the inner wall of the assembly groove. The position, size and shape of the third sliding groove correspond to the second sliding groove, so that the locking pin passes through the assembly groove, passes through the third sliding groove and enters the first and second sliding grooves. During the rotation of the ear buckle, the inner side walls of the first, second and third sliding grooves will contact the locking pin, thereby increasing the contact area between the locking pin and the ear buckle and the insulating body during use, avoiding deformation of the locking pin due to the concentration of stress load, and extending the service life of the locking pin.

[0029] 6. The locking pin includes an inserting part and a limiting part. The inserting part is housed in the third slide groove, the first slide groove, and the second slide groove. The limiting part abuts against the inner wall of the assembly groove. The slot extends to both sides of the assembly groove. By inserting a stop plate into the slot, the locking pin is prevented from coming out of the assembly groove. The locking pin can be quickly installed and removed by a single stop plate, which facilitates the easy replacement of parts during later maintenance. [Attached Image Description]

[0030] Figure 1 This is an exploded structural diagram of the card edge connector according to the first embodiment of the present utility model;

[0031] Figure 2 for Figure 1 Schematic diagram of the combined structure of the middle card edge connector;

[0032] Figure 3 for Figure 2 A cross-sectional view of the ear loop in the locked position at position AA;

[0033] Figure 4 for Figure 3 A cross-sectional view showing the ear loops in the open position.

[0034] Figure 5 for Figure 2 A cross-sectional view of the ear loops in the locked position at the BB position;

[0035] Figure 6 for Figure 5 A cross-sectional view showing the ear loops in the open position.

[0036] Figure 7 for Figure 2 A cross-sectional view at position CC;

[0037] Figure 8 for Figure 1 A partially enlarged schematic diagram of the insulating body in the middle;

[0038] Figure 9 for Figure 1 A schematic diagram of the structure of the middle ear loop.

[0039] Explanation of reference numerals in the accompanying drawings for specific embodiments:

[0040] 1. Card edge connector 10. Insulating body 11. Slot 12. Mounting surface 13. Dating surface 14. Control Tower 141. Support plate 142. Limiting surface 15. First chute 151. Protrusion 152. Extended surface 20. Terminal 30. Earrings 31. Lever section 311. Assembly slot 312. Card slot 313. Third Slide 32. Connecting plate 321. Second Slide 322. Shaft 33. Top section 34. Fastening part 341. Card Block 35. Stop plate 40. Locking pin 41. Intersection 42. Limiting part 50. Electronic Card 51. Gap X, Up and Down Direction Y, left and right directions Z, Forward / Backward Direction [Specific Implementation Examples]

[0041] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0047] It should be noted that, according to Figures 1 to 9 As shown, in this embodiment of the invention, the X-axis, Y-axis, and Z-axis intersect each other in pairs. For ease of explanation, the up-down direction is defined as the X-axis direction, the direction of the X-axis arrow is upward, and the opposite direction of the X-axis arrow is downward. The left-right direction is defined as the Y-axis direction, and the front-back direction is defined as the Z-axis direction. In this embodiment, the X-axis and Y-axis directions are coplanar and relatively perpendicular, and the Z-axis direction is relatively perpendicular to the common plane of the X-axis and Y-axis. The up-down, left-right, and front-back directions are relatively perpendicular to each other. Further explanation: the term "parallel" in this application includes not only absolute parallelism but also approximately parallelism as commonly understood in engineering, such as "parallel" referring to an angle between lines, lines and surfaces, or surfaces with an angle of -1° to 1°. Similarly, "perpendicular" also includes not only absolute perpendicularity but also approximately perpendicularity as commonly understood in engineering, such as "perpendicular" referring to an angle between lines, lines and surfaces, or surfaces with an angle of 89° to 91°. Equal distances or equal angles include not only absolute equality, but also approximate equality as commonly understood in engineering, which means there can be a certain degree of error, such as a tolerance range of -1% to 1%.

[0048] Please see Figures 1 to 9 The card edge connector 1 of the first embodiment of the present utility model includes an insulating body 10, a terminal 20, an ear loop 30 and a locking pin 40. The card edge connector 1 is used for inserting an electronic card 50. The terminal 20 is electrically connected to the electronic card 50 for signal transmission. The ear loop 30 is used to switch the position of the locking pin 40 so that the locking pin 40 stops or unlocks the edge of the notch 51 of the electronic card 50.

[0049] Please see Figures 1 to 8The insulating body 10 is longitudinally elongated and has a downwardly recessed slot 11 for inserting the electronic card 50 vertically. The insulating body 10 has a mounting surface 12 and a mating surface 13 on its two sides in the vertical direction. The mounting surface 12 is located at the bottom of the insulating body 10 (the bottom refers to the side of the insulating body 10 closest to the circuit board after the card edge connector 1 is assembled onto the circuit board). The mounting surface 12 can be directly or indirectly engaged with the circuit board. Direct engagement means the mounting surface 12 is directly attached to the circuit board, while indirect engagement means the mounting surface 12 is supported on the circuit board by other components, resulting in a certain gap between the mounting surface 12 and the circuit board. Understandably, the engagement state between the mounting surface 12 and the circuit board can be selected according to the actual structural requirements. The mating surface 13 is located on the side of the insulating body 10 away from the mounting surface 12. The slot 11 is formed on the mating surface 13 and recessed towards the mounting surface 12. The mating surface 13 is located on the side of the insulating body 10 near the electronic card 50, thereby enabling signal transmission between the electrical components and the electronic card 50 through the card edge connector 1.

[0050] The insulating body 10 has a tower 14 at one end along the left-right direction. The tower 14 includes a base 142 and two support plates 141 extending upward from opposite sides of the base 142. The base 142 is a straight plate extending along the common surface of the front-back direction and the left-right direction. The base 142 is located at the bottom of the tower 14. The support plates 141 are plates extending along the common surface of the up-down direction and the left-right direction. The two support plates 141 are arranged side by side at intervals along the front-back direction. The interval between the two support plates 141 is used for inserting the electronic card 50. The electronic card 50 is fixed to the card edge connector 1 by limiting and stopping the electronic card 50 inside the tower 14.

[0051] The tower 14 is provided with a first slide 15, which is used to guide the movement direction of the locking pin 40. The first slide 15 is elongated and there are two of them. The two first slides 15 are respectively provided on the two support plates 141. The first slide 15 is configured to allow the locking pin 40 to move relative to the insulating body 10 at least in the left and right directions. The first slide 15 has a first position and a second position. The locking pin 40 moves between the first position and the second position in the first slide 15. When the locking pin 40 is in the first position, it engages and limits the edge of the notch 51 of the electronic card 50. When the locking pin 40 is in the second position, it disengages from the edge of the notch 51 of the electronic card 50 and unlocks. Understandably, the first slide groove 15 can extend horizontally in the left-right direction. In this case, the locking pin 40 moves accordingly in the left-right direction to stop or unlock the electronic card 50. The extension direction of the first slide groove 15 can also be tilted at a certain angle relative to the left-right direction. In this case, the locking pin 40 will also rise and fall a certain height in the up-down direction during its movement. The smaller the angle between the extension direction of the first slide groove 15 and the left-right direction, the less resistance the latch faces as it moves within the first slide groove 15, making it easier for the user to operate the latch and improving the user experience. Conversely, the larger the angle between the extension direction of the first slide groove 15 and the left-right direction, the greater the rise and fall height of the latch in the up-down direction during its movement within the first slide groove 15. Consequently, the gap when the latch stops and limits the electronic card 50 is smaller, improving the locking effect on the electronic card 50. In this embodiment, the first slide groove 15 extends downward at an incline from the end away from the slot 11 to the end closer to the slot 11. That is, the distance between the first slide groove 15 and the mounting surface 12 gradually decreases in the direction from the end away from the slot 11 to the end closer to the slot 11. This causes the first slide groove 15 to extend downward at an incline towards the slot 11 along the insertion direction of the electronic card 50. The height of the locking pin 40 at the second position is higher than the height of the locking pin 40 at the first position. That is, as the locking pin 40 moves downward in the first slide groove 15 towards the end closer to the slot 11, the locking pin 40 will move downward at a certain height in the vertical direction. This reduces the gap between the locking pin 40 and the electronic card 50 when the electronic card 50 is blocked and limited, thereby improving the locking effect on the electronic card 50.

[0052] Please see Figures 1 to 6 The terminal 20 is a conductive component, housed within and fixedly connected to the insulating body 10. At least a portion of the terminal 20 protrudes into the slot 11. The terminal 20 is used for electrical connection with the electronic card 50. One end of the terminal 20 is electrically connected to the electronic card 50, while the other end protrudes from the mounting surface 12 and is electrically connected to electrical components. The terminal 20 connects the electronic card 50 to the electrical components, ensuring the transmission of electrical signals. In this embodiment, multiple terminals 20 are provided, arranged in a parallel, left-right spacing pattern within the insulating body 10.

[0053] Please see Figures 1 to 9The ear clip 30 is rotatably connected to the tower 14. The ear clip 30 rotates between a locked position and an open position. The rotation of the ear clip 30 relative to the insulating body 10 causes the locking pin 40 to move in the first slide groove 15, thereby moving the locking pin 40 between a first position and a second position in the first slide groove 15. The first position corresponds to the locked position of the latch, and the second position corresponds to the open position of the latch. The ear loop 30 is provided with a second slide groove 321, which is elongated and is used for the locking pin 40 to pass through. This allows the rotational displacement of the ear loop 30 to be converted into the displacement of the locking pin 40 in the vertical and horizontal directions. The displacement of the locking pin 40 in the horizontal direction will cause the locking pin 40 to move within the first slide groove 15, while the displacement of the locking pin 40 in the vertical direction will be absorbed by the second slide groove 321. This ensures that the rotation of the ear loop 30 will push the locking pin 40 to move within the first slide groove 15. The second slide groove 321 is configured to allow the locking pin 40 to move relative to the ear loop 30 at least in the vertical direction. Specifically, when the ear clip 30 rotates from the locked position to the open position, the inner wall surface of the second slide groove 321 near the slot 11 abuts against the locking pin 40, thereby pushing the locking pin 40 from the first position to the second position; when the ear clip 30 rotates from the open position to the locked position, the inner wall surface of the second slide groove 321 away from the slot 11 abuts against the locking pin 40, thereby pushing the locking pin 40 from the second position to the first position. Understandably, when the extension direction of the first slide groove 15 has a certain angle relative to the left-right direction, the movement of the locking pin 40 within the first slide groove 15 will also generate a vertical displacement, which is also absorbed by the second slide groove 321. In this embodiment, the ear clip 30 is covered on the outside of the tower 14, and the tower 14 is partially inserted into the ear clip 30. The top of the tower 14 is provided with a limiting surface 143, that is, the top end face of the support plate 141 is the limiting surface 143. When the ear clip 30 is rotated to the open position, the inner sidewall of the ear clip 30 abuts against the limiting surface 143 to limit the rotation angle of the ear clip 30. The limiting surface 143 extends obliquely upward from the end away from the slot 11 to the end closer to the slot 11, that is, the distance between the limiting surface 143 and the mounting surface 12 gradually increases. The limiting surface 143 extends obliquely away from the slot 11 along the insertion direction of the electronic card 50. The first slide groove 15 has an extension surface 152 facing each other in the vertical direction. The extension surface 152 is planar and opposite to each other on both sides of the first slide groove 15. The extension direction of the extension surface 152 is the extension direction of the first slide groove 15. The angle between the extension surface 152 and the horizontal line extending in the left and right direction is α, and the angle between the limiting surface 143 and the horizontal line extending in the left and right direction is β. Then 0.5β≤α≤1.5β.The larger the angle between the first slide groove 15 and the horizontal line extending in the left and right direction, the greater the height change of the locking pin 40 in the vertical direction when it moves along the first slide groove 15, and the closer it is to the edge of the notch 51 of the electronic card 50, resulting in a more stable fixation of the electronic card 50. The smaller the angle between the first slide groove 15 and the horizontal line extending in the left and right direction, the less resistance the locking pin 40 encounters when moving along the first slide groove 15, making it easier to rotate the ear clip 30. The angle between the limiting surface 143 and the horizontal line extending in the left and right direction affects the rotation angle of the ear clip 30. After testing, when the angle between the first slide groove 15 and the left and right direction is 0.5β≤α≤1.5β, it ensures that the gap height between the locking pin 40 and the electronic card 50 is reduced while avoiding excessive resistance to the movement of the locking pin 40 within the first slide groove 15, making the disassembly and assembly operations easier and more convenient.

[0054] The earring 30 includes a lever part 31, a connecting plate 32 connecting the lever part 31, and a protruding part 33 connecting the connecting plate 32. The lever part 31 is located on the top of the earring 30 and is block-shaped. When the earring 30 is in the locked position, the lever part 31 extends approximately in the left-right direction to facilitate the human hand to press the lever part 31 to rotate the earring 30. The connecting plate 32 is rotatably connected to the tower 14. The connecting plate 32 is disposed between two support plates 141. The second slide groove 321 is disposed on the connecting plate 32. The first slide groove 15 on the tower 14 and the second slide groove 321 on the connecting plate 32 are at least partially aligned in the front-back direction. The top of the connecting plate 32 is connected to the lever part 31, and the bottom of the connecting plate 32 is connected to the ejector part 33. The ejector part 33 protrudes from the connecting plate 32 toward the slot 11. When the ear buckle 30 is in the locked position, the ejector part 33 extends approximately in the left-right direction. The bottom of the electronic card 50 is pressed against the ejector part 33. When the ear buckle 30 rotates from the locked position to the open position, the ejector part 33 rotates upward, thereby lifting the electronic card 50 through the ejector part 33 to facilitate the removal of the electronic card 50. In this embodiment, the connecting plate 32 has a rotating shaft 322 protruding on both sides, and the rotating shaft 322 on both sides is inserted into the support plate 141 on both sides respectively, so as to pivotally connect the ear buckle 30 to the tower 14.

[0055] The actuating part 31 has an assembly groove 311 on its side wall. The assembly groove 311 is strip-shaped and extends in the front-to-back direction. A third sliding groove 313 is formed on the inner wall of the assembly groove 311, that is, a third sliding groove 313 is formed inside the actuating part 31. The third sliding groove 313 is connected to the assembly groove 311. The position, shape and size of the third sliding groove 313 correspond to the second sliding groove 321. The locking pin 40 passes through the assembly groove 311, passes through the third sliding groove 313 and enters the first... The sliding groove 15 and the second sliding groove 321, along with the assembly groove 311, provide the space required for the installation and removal of the locking pin 40. When the buckle 30 rotates, the inner walls of the second sliding groove 321 and the third sliding groove 313 simultaneously push the locking pin 40 along the first sliding groove 15. By adding the third sliding groove 313, the contact area between the buckle 30 and the locking pin 40 is increased, thereby avoiding stress concentration caused by the buckle 30 pushing the locking pin 40 and resulting in deformation of the locking pin 40, improving the reliability of the locking pin 40 and extending its service life. It is understood that the buckle 30 may only have the second sliding groove 321 on the connecting plate 32, or only have the third sliding groove 313 on the lever part 31, or have both the second sliding groove 321 on the connecting plate 32 and the third sliding groove 313 on the lever part 31. The locking pin 40 passes through the second sliding groove 321 and / or the third sliding groove 313, ensuring that the buckle 30 can push the locking pin 40 along the first sliding groove 15 when it rotates.

[0056] The ear clip 30 also includes a fastening part 34 connected to the connecting plate 32. The fastening part 34 is located on the outside of the tower 14 and is disposed on the outside of the rotating shaft 322. The top end of the fastening part 34 is connected to the lever part 31. When the ear clip 30 is rotated to the locked position, the fastening part 34 engages with the tower 14 to improve the holding force of the ear clip 30 in the locked position and prevent the ear clip 30 from accidentally disengaging from the locked position when unlocking is not required. In this embodiment, two fastening parts 34 are provided. The two fastening parts 34 are respectively arranged on the side of the support plate 141 away from the connecting plate 32. The fastening parts 34 on both sides are provided with opposing extending locking blocks 341. When the ear clip 30 is in the locked position, the locking blocks 341 engage with the side of the tower 14 away from the ejector part 33 to improve the effect of securing the ear clip 30 in the locked position.

[0057] Please see Figure 1 , Figures 3 to 9The locking pin 40 passes through the mounting groove 311, through the third slide groove 313, and enters the first slide groove 15 and the second slide groove 321. The locking pin 40 is strip-shaped and extends in the front-to-back direction. The locking pin 40 is configured to engage from the side of the electronic card 50 into a corresponding notch 51 of the electronic card 50. The notch 51 is formed on the side of the electronic card 50 near the tower 14. When the locking pin 40 slides into the notch 51, it can stop and limit the edge of the notch 51. When the locking pin 40 disengages from the notch 51, it unlocks and eliminates the obstruction of the edge of the notch 51. The ear loop 30 rotates... When rotated to the locked position, the locking pin 40 is located in the first position within the first slide groove 15 and engages with the notch 51 of the electronic card 50. When the ear loop 30 is rotated to the open position, the locking pin 40 moves to the second position in the left-right direction and disengages from the notch 51 of the electronic card 50. Thus, by rotating the ear loop 30 between the locked and open positions, the locking pin 40 can be controlled to engage with or disengage from the notch 51 of the electronic card 50, thereby achieving the switching between blocking and releasing the electronic card 50. In this embodiment, in the left-right direction, the first position is closer to the slot 11 than the second position; the end of the electronic card 50 furthest from the slot 11 is positioned between the first and second positions, ensuring that when the locking pin 40 moves to the second position within the first slide groove 15, the locking pin 40 no longer blocks the electronic card 50, and the electronic card 50 can be directly removed from the slot 11 without having to remove one end of the electronic card 50 first and then the other end, making the removal and installation of the electronic card 50 more convenient and faster. In this embodiment, a protrusion 151 is provided on one inner wall surface of the first slide groove 15 along the vertical direction. When the locking pin 40 moves to the first position within the first slide groove 15, the protrusion 151 blocks the side of the locking pin 40 away from the slot 11. The protrusion 151 is used to increase the holding force when the locking pin 40 is fixed in the first position, that is, to improve the stability of the ear clip 30 in the locked position. Specifically, the cross-section of the protrusion 151 is arc-shaped, and the width of the protrusion 151 gradually decreases from the inner wall of the first slide groove 15 towards the interior of the first slide groove 15, so that the locking pin 40 will generate a jerky feedback to the operator's hand when passing through the protrusion 151, thereby reminding the operator that the ear clip 30 has been rotated to the locked position or that the ear clip 30 has been disengaged from the locked position.

[0058] The locking pin 40 includes an insertion portion 41 and a limiting portion 42 connected to one end of the insertion portion 41. The insertion portion 41 is cylindrical and is received within a third slide groove 313, a first slide groove 15, and a second slide groove 321. The central axis of the insertion portion 41 extends in the front-rear direction. The limiting portion 42 is disposed at one end of the insertion portion 41 in the front-rear direction. The limiting portion 42 is cylindrical, and its central axis is collinear with the central axis of the insertion portion 41. The cross-sectional area of ​​the limiting portion 42 is larger than that of the insertion portion 41. Here, the cross-sectional area refers to the area perpendicular to the central axis of the insertion portion 41. The cross-sectional area of ​​the limiting part 42 in the direction perpendicular to the central axis of the inserting part 41 is greater than the cross-sectional area of ​​the inserting part 41 in the direction perpendicular to its own central axis. This ensures that, viewed from the front-rear direction, the limiting part 42 at least partially protrudes from the circumference of the inserting part 41, thereby achieving the limiting and stopping function of the limiting part 42. The limiting part 42 abuts against the inner wall surface of the assembly groove 311, thereby positioning the locking pin 40 in the assembly groove 311. Furthermore, the actuating part 31 is provided with a slot 312; the slot 312 is arranged opposite to each other on both sides of the assembly groove 311, and the slot 312 is provided along the extension direction perpendicular to the assembly groove 311. A stop plate 35 is inserted into the slots 312 on both sides. The stop plate 35 is straight and perpendicular to the extension direction of the assembly slot 311. The stop plate 35 engages with the lever part 31 to secure the stop plate 35 in the slot 312. The stop plate 35 stops at the end of the limiting part 42, which refers to the end of the limiting part 42 away from the connecting plate 32. The stop plate 35 stops and fixes the locking pin 40 that passes through the first slide groove 15, the second slide groove 321 and the third slide groove 313. When it is necessary to remove the locking pin 40, simply pull out the stop plate 35 to pull the locking pin 40 out of the assembly slot 311. The disassembly and assembly operation is simple and convenient.

[0059] In summary, this utility model provides a card edge connector 1, which has the following advantages compared with the prior art:

[0060] 1. The locking pin 40 is inserted into the first slide groove 15 of the tower 14 and the second slide groove 321 of the ear buckle 30. The first slide groove 15 allows the locking pin 40 to move relative to the insulating body 10 at least in the left-right direction, and the second slide groove 321 allows the locking pin 40 to move relative to the ear buckle 30 at least in the up-down direction. When the ear buckle 30 rotates, the top of the ear buckle will have a displacement in the up-down direction. The locking pin 40 can avoid moving up and down synchronously with the top of the ear buckle by moving relative to the ear buckle 30 along the second slide groove 321, which would reduce the distance between the locking pin 40 and the edge of the notch 51 of the electronic card. The problem is that the vertical displacement of the top of the earring can be absorbed by the movement of the locking pin 40 along the second slide groove 321. However, when the earring 30 rotates, the top of the earring will also have a horizontal displacement. This horizontal displacement will cause the locking pin 40 to move horizontally along the first slide groove 15. Thus, the earring 30 can provide the force required for the locking pin 40 to move horizontally, so that when the earring 30 rotates from the open position to the locked position, the locking pin 40 moves horizontally to the first slide groove 15. The first position of the latch 30 is engaged with the notch 51 of the electronic card to lock the electronic card 50. When the latch 30 rotates from the locked position to the open position, the locking pin 40 moves to the second position in the left-right direction and disengages from the notch 51 of the electronic card to unlock the electronic card 50. That is, the movement trajectory of the locking pin 40 is limited by the first slide groove 15 provided on the tower 14. Compared with the traditional method of blocking the electronic card 50 by the locking structure on the latch 30 itself, the locking pin 40 does not need to be engaged with the notch 51 of the electronic card 50 along the rotation trajectory of the latch 30. When the electronic card 50 is inserted or detached, the locking pin 40 can be inserted or detached along the translational trajectory of the first slide groove 15. Therefore, it avoids the problem that the ear clip 30 may have a large gap with the electronic card 50 due to its own fixation of the electronic card 50, resulting in poor locking effect, or that the small gap may have a small gap that interferes with the electronic card 50. This application reduces the limiting gap of the electronic card 50 by setting the locking pin 40, reduces the shaking amplitude of the electronic card 50 in the slot 11, avoids the electronic card 50 being scratched, improves the locking effect of the electronic card 50, and ensures the transmission of high-speed signals.

[0061] 2. The first slide groove 15 extends downward at an angle from the end away from the slot 11 toward the end closer to the slot 11. The height of the locking pin 40 at the first position is lower than the height of the locking pin 40 at the second position. This causes the ear buckle 30 to rotate toward the slot 11 and push the locking pin 40 to move along the first slide groove 15 toward the slot 11. As a result, the locking pin 40 gradually approaches the edge of the notch 51 of the electronic card 50, thereby further reducing the gap height between the locking pin 40 and the edge of the notch 51 of the electronic card 50 and further improving the locking effect on the electronic card 50.

[0062] 3. A limiting surface 143 is provided on the top of the tower 14. The limiting surface 143 can abut against the inner wall of the ear buckle 30 to limit the maximum rotation angle of the ear buckle 30. That is, the angle between the limiting surface 143 and the horizontal line extending in the left and right direction will affect the rotation angle of the ear buckle 30. The larger the angle between the first slide groove 15 and the horizontal line extending in the left and right direction, the closer the locking pin 40 can get to the electronic card 50 when it moves along the first slide groove 15. The smaller the angle between the first slide groove 15 and the horizontal line extending in the left and right direction, the closer the locking pin 40 can get to the electronic card 50 when it moves along the first slide groove 15. The less resistance the groove 15 moves, the easier it is for the user to push the ear clip 30 to rotate. The first groove 15 has an extension surface 152 facing each other in the vertical direction. By setting the angle between the extension surface 152 and the horizontal line extending in the horizontal direction as α, and setting the angle between the limiting surface 143 and the horizontal line extending in the horizontal direction as β, then 0.5β≤α≤1.5β ensures that the gap height between the locking pin 40 and the electronic card 50 is reduced while avoiding excessive resistance to the movement of the locking pin 40 in the first groove 15, making the disassembly and assembly operations easier and more convenient.

[0063] 4. A protrusion 151 is provided on the inner wall surface of the first slide groove 15. When the locking pin 40 moves to the end of the first slide groove 15 near the slot 11, the protrusion 151 blocks the side of the locking pin 40 away from the slot 11, thereby increasing the holding force that keeps the locking pin 40 at the end of the first slide groove 15 near the slot 11, improving the ability of the locking pin 40 to keep the electronic card 50 stopped and limited, preventing the locking pin 40 from slipping due to vibration and releasing the stop on the electronic card 50, and improving the stability of the card edge connector 1 locking the electronic card 50.

[0064] 5. An assembly groove 311 is provided on the side wall of the lever part 31. A third sliding groove 313 is provided on the inner wall of the assembly groove 311. The position, size and shape of the third sliding groove 313 correspond to the second sliding groove 321, so that the locking pin 40 passes through the assembly groove 311, passes through the third sliding groove 313 and enters the first sliding groove 15 and the second sliding groove 321. During the rotation of the ear buckle 30, the inner side walls of the first sliding groove 15, the second sliding groove 321 and the third sliding groove 313 will all contact the locking pin 40, thereby increasing the contact area between the locking pin 40 and the ear buckle 30 and the insulating body 10 during use, avoiding deformation of the locking pin 40 due to the concentration of stress load, and extending the service life of the locking pin 40.

[0065] 6. The locking pin 40 includes an inserting part 41 and a limiting part 42. The inserting part 41 is received in the third slide groove 313, the first slide groove 15 and the second slide groove 321. The limiting part 42 abuts against the inner wall of the assembly groove 311. The two sides of the assembly groove 311 are provided with slots 312. By inserting the stop plate 35 into the slots 312, the locking pin 40 is prevented from coming out of the assembly groove 311. The locking pin 40 can be quickly installed and removed by a stop plate 35, which facilitates the operation of replacing parts during later maintenance.

[0066] 7. The locking pin 40 stops and limits the edge of the notch 51 of the electronic card 50. By setting the end of the electronic card 50 away from the slot 11 in the left and right direction to be closer to the slot 11 than the end of the first slide 15 away from the slot 11, the locking pin 40 no longer stops the edge of the notch 51 when it moves to the end of the first slide 15 away from the slot 11. This ensures that the electronic card 50 can be directly pulled out of the slot 11 without having to pull out one end of the electronic card 50 first and then the other end. The disassembly and assembly of the electronic card 50 is more convenient and faster.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A card edge connector for inserting an electronic card, characterized in that, include: An insulating body, wherein the insulating body is provided with a downwardly recessed slot, and a tower is provided at one end of the insulating body along the left-right direction, and the tower is provided with a first sliding groove; A terminal is housed in the insulating body, the terminal at least partially protruding into the slot, and the terminal is used for electrical connection with the electronic card; An ear clip, rotatably connected to the tower, rotates between a locked position and an open position, and is provided with a second sliding groove; and A locking pin is inserted into the first and second slide grooves. The ear clip rotates relative to the insulating body, causing the locking pin to move between a first position and a second position within the first slide groove. The first slide groove is configured to allow the locking pin to move relative to the insulating body at least in the left-right direction, and the second slide groove is configured to allow the locking pin to move relative to the ear clip at least in the up-down direction. When the ear clip rotates to the locked position, the locking pin is located at the first position within the first slide groove and engages with the notch of the electronic card. When the ear clip rotates to the open position, the locking pin moves to the second position in the left-right direction and disengages from the notch of the electronic card. In the left-right direction, the first position is closer to the slot than the second position.

2. The card edge connector according to claim 1, characterized in that, The first slide extends downward at an angle from the end furthest from the slot to the end closest to the slot, and the height of the locking pin at the first position is lower than the height of the locking pin at the second position.

3. The card edge connector according to claim 1, characterized in that, The tower portion is inserted upward into the ear clip, and a limiting surface is provided on the top of the tower. When the ear clip is rotated to the open position, the inner sidewall of the ear clip abuts against the limiting surface. Wherein, the limiting surface extends obliquely upward from the end away from the slot to the end closer to the slot; the first slide groove has an extension surface opposite each other in the vertical direction, the angle between the extension surface and the horizontal line extending in the horizontal direction is α, the angle between the limiting surface and the horizontal line extending in the horizontal direction is β, then 0.5β≤α≤1.5β.

4. The card edge connector according to claim 1, characterized in that, The first slide groove has a protrusion on one side of its inner wall along the vertical direction. When the locking pin moves to the first position in the first slide groove, the protrusion blocks the locking pin on the side away from the slot.

5. The card edge connector according to claim 4, characterized in that, The protrusion has an arc-shaped cross-section, and the width of the protrusion gradually decreases from the inner wall of the first groove towards the inside of the first groove.

6. The card edge connector according to claim 1, characterized in that, The ear clip includes a lever part, a connecting plate connected to the lever part, and a top part connected to the connecting plate. The connecting plate is rotatably connected to the tower. The second sliding groove is disposed on the connecting plate. The first sliding groove on the tower and the second sliding groove on the connecting plate are at least partially aligned in the front-back direction.

7. The card edge connector according to claim 6, characterized in that, An assembly groove is provided on the side wall of the lever part, the assembly groove extends in the front-to-back direction, and a third sliding groove is provided on the inner wall surface of the assembly groove. The third sliding groove is connected to the assembly groove, and the setting position and shape and size of the third sliding groove correspond to the second sliding groove. The locking pin passes through the assembly groove, passes through the third sliding groove, and enters the first sliding groove and the second sliding groove.

8. The card edge connector according to claim 7, characterized in that, A pivot is provided on the side of the connecting plate, and the pivot is pivotally connected to the tower. The ear buckle also includes a fastening part that connects to the connecting plate. The fastening part is located on the outside of the pivot. When the ear buckle is rotated to the locking position, the fastening part engages with the tower.

9. The card edge connector according to claim 7, characterized in that, The locking pin includes an insert portion and a limiting portion connected to one end of the insert portion; the insert portion is cylindrical and is housed in the third slide groove, the second slide groove and the first slide groove; the cross-sectional area of ​​the limiting portion is larger than the cross-sectional area of ​​the insert portion, and the limiting portion abuts against the inner wall surface of the assembly groove. The lever part is provided with a slot, which is arranged opposite to each other on both sides of the assembly groove. A stop plate is inserted into the slot, and the stop plate engages with the lever part. The stop plate stops at the end of the limiting part.

10. The card edge connector according to claim 7, characterized in that, The tower includes two upwardly extending support plates, which are arranged opposite to each other on both sides of the connecting plate. The ear buckle also includes a fastening part that connects to the connecting plate. There are two fastening parts, which are respectively arranged on the side of the support plates away from the connecting plate. The fastening parts on both sides are provided with opposing extending locking blocks. When the ear buckle is in the locked position, the locking blocks engage with the side of the support plate away from the connecting plate.

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