Card edge connector and connector assembly

Abstract

The utility model discloses a card edge connector and a connector assembly, the connector assembly comprises a circuit board and a card edge connector installed on the circuit board, the card edge connector is used for electrical plugging of an electronic card, the card edge connector comprises an insulation body, the insulation body is provided with an installation surface facing downward in the vertical direction and a butt joint surface facing forward in the front-back direction, the mounting surface downwards faces the circuit board, and the slot forwards penetrates through the butt joint surface to allow the electronic card to be inserted backwards; an ear clip is arranged at the end part of the insulating body in the left-right direction, the ear clip is provided with an elastic arm which extends outwards towards one side in the left-right direction relative to the insulating body and a buckling part which is convexly arranged in a first direction relative to the elastic arm in the up-down direction, and the buckling part is used for locking the electronic card; and a force is applied to the elastic arm in a second direction opposite to the first direction in the vertical direction, so that the elastic arm deflects towards the second direction to unlock the electronic card. The card edge connector is convenient for a user to operate the elastic arm and unlock the electronic card in the vertical direction.

Description

[Technical field]

[0001] The utility model relates to a card edge connector and a connector assembly, in particular to a card edge connector and a connector assembly which can stably lock and unlock an electronic card. [Background technology]

[0002] Card edge connectors are widely used in computer equipment. Existing card edge connectors and connector components with circuit boards and mounted on the card edge connectors, the card edge connectors usually have an insulating body extending in the longitudinal direction, an ear buckle is installed at one longitudinal end of the insulating body, the insulating body has a mating surface and a mounting surface arranged opposite to each other in the vertical direction, a slot is formed by a depression in the vertical direction from the mating surface for accommodating an electronic card, the mounting surface is used to connect with the circuit board, the ear buckle is located on the outer side of the slot extending in the longitudinal direction, and is used to lock the electronic card, the vertical direction is perpendicular to the longitudinal direction, a lateral force is applied to the ear buckle to deflect the ear buckle, and unlock the electronic card, the lateral direction is perpendicular to the longitudinal direction and the vertical direction.

[0003] However, a computer device is often provided with a plurality of electronic components, and the ear button requires a large space for deflection in the lateral direction, which is not conducive to the miniaturization of the computer device. In addition, the existing computer devices are becoming increasingly thinner and lighter, and the design of inserting the electronic card into the slot in the vertical direction cannot meet the demand. At the same time, the components on the electronic card are easily obscured above the ear button and other components on the circuit board are horizontally adjacent to the ear button, making it difficult for the operator to operate the ear button.

[0004] Therefore, it is necessary to design a new card edge connector and connector assembly to overcome the above problems. [Contents of the utility model]

[0005] The utility model aims to provide a card edge connector and a connector assembly which can stably lock and conveniently unlock the electronic card by plugging the electronic card in a direction parallel to the circuit board.

[0006] In order to achieve the above purpose, the utility model adopts the following technical means:

[0007] A card edge connector, an insulating body, the insulating body having a mounting surface facing downward in the up-down direction and a mating surface facing forward in the front-back direction, the mounting surface being used to face downward to the circuit board, the insulating body being provided with a slot, the slot penetrating forward through the mating surface for allowing the electronic card to be inserted backward; a plurality of conductive terminals, the conductive terminals being provided on the insulating body, the conductive terminals having a contact portion exposed in the slot; an ear buckle, the ear buckle being provided at an end portion of the insulating body in the left-right direction, the ear buckle being provided with an elastic arm extending outward toward one side in the left-right direction relative to the insulating body and a buckle portion protruding in a first direction relative to the elastic arm in the up-down direction, the buckle portion being used to lock the electronic card, applying force to the elastic arm in a second direction opposite to the first direction in the up-down direction, causing the elastic arm to swing toward the second direction to unlock the electronic card.

[0008] Furthermore, the elastic arm includes an upper surface of the arm, and the buckle portion protrudes upward from the upper surface of the arm. When unlocking, a downward force is applied to the elastic arm to make the elastic arm deflect downward to unlock the electronic card.

[0009] Furthermore, the height of the buckle portion protruding upward from the upper surface of the arm is a first height; the elastic arm includes a pressing portion for applying a downward force, and the height of the pressing portion to the mounting surface in the up and down directions is a second height, and the second height is greater than the first height.

[0010] Furthermore, the elastic arm includes a pressing portion for applying downward force, the height of the pressing portion to the mounting surface in the vertical direction is a second height, and the height of the slot in the vertical direction is defined as a third height, and the third height is less than the second height.

[0011] Furthermore, the slot is provided with an upper slot wall and a lower slot wall located below the upper slot wall, the upper slot wall and the lower slot wall define the slot, and the highest point of the buckle portion protruding upward from the upper surface of the arm is defined as the buckle vertex, the buckle vertex is higher than the lower slot wall but not higher than the upper slot wall in the up and down directions, and the upper surface of the arm is not higher than the lower slot wall.

[0012] Furthermore, the insulating body has a first assembly part, which is located on one side of the slot in the left-right direction, and the ear buckle has a second assembly part, the elastic arm is extended from the second assembly part, and the second assembly part is assembled to the first assembly part along the up-down direction.

[0013] Furthermore, it includes a first fixing member, which has a fixing portion and a welding portion formed by bending and extending from the bottom end of the fixing portion, the welding portion is bent and extended in the left and right directions relative to the fixing portion toward a side away from the slot, the fixing portion is fixed to the first assembly portion, and the welding portion is used for surface welding to the circuit board.

[0014] Furthermore, the insulating body has a top surface opposite to the mounting surface in the up and down directions, the first assembly part has a stop surface, the stop surface is arranged upward, and the stop surface is higher than the mounting surface and lower than the slot in the up and down directions, the second assembly part is assembled to the first assembly part from top to bottom, and the stop surface stops the second assembly part upward.

[0015] Furthermore, the second assembly portion has a limiting portion, and the limiting portion is arranged adjacent to the slot in the left and right directions.

[0016] Furthermore, the second assembly portion has a front end surface, and the front end surface is arranged flush with the butt joint surface.

[0017] Furthermore, the elastic arm extends linearly in the left-right direction.

[0018] A connector assembly comprises: a circuit board; a card edge connector, which is mounted downward on the circuit board for electrically plugging an electronic card, the card edge connector comprising a terminal module and an ear buckle: the terminal module comprises an insulating body and a plurality of conductive terminals arranged on the insulating body, the insulating body having a mating surface, the insulating body being provided with a slot, the slot penetrating forward through the mating surface for the electronic card to be inserted backward, the conductive terminal being provided on the insulating body, the conductive terminal having a contact portion exposed in the slot; the ear buckle being provided at an end portion of the insulating body in the left-right direction, the ear buckle being provided with an elastic arm extending outwardly toward one side in the left-right direction relative to the insulating body and a buckle portion protruding in a first direction relative to the elastic arm in the up-down direction, the buckle portion being used to lock the electronic card, applying force to the elastic arm in a second direction opposite to the first direction in the up-down direction so that the elastic arm is deflected in the second direction to unlock the electronic card.

[0019] Furthermore, the elastic arm includes an upper surface of the arm, and the buckle portion protrudes upward from the upper surface of the arm. When unlocking, a downward force is applied to the elastic arm to make the elastic arm deflect downward to unlock the electronic card.

[0020] Furthermore, the height of the buckle portion protruding upward from the upper surface of the arm is a first height; the elastic arm includes a pressing portion for applying a downward force, and the height of the pressing portion to the circuit board in the up and down directions is greater than the first height.

[0021] Furthermore, the elastic arm is arranged parallel to the circuit board. The insulating body has a first assembly part, the first assembly part is located at one side of the slot in the left-right direction, the ear buckle has a second assembly part, the elastic arm is extended from the second assembly part, and the second assembly part is assembled to the first assembly part along the up-down direction.

[0022] Furthermore, the conductive terminal has a welding foot, which is exposed from the insulating body and welded to the circuit board. The ear clip is assembled to the insulating body after the terminal module is welded to the circuit board.

[0023] Furthermore, the terminal module further includes a first fixing member, the first fixing member having a fixing portion and a welding portion formed by bending and extending from the bottom end of the fixing portion, the welding portion is bent and extended in the left and right directions relative to the fixing portion toward a side away from the slot, the fixing portion is fixed to the first assembly portion, and the surface of the welding portion is welded to the circuit board.

[0024] Compared with the prior art, the card edge connector and connector assembly of the utility model have the following beneficial effects:

[0025] The buckle portion protrudes from the upper surface of the arm in a first direction along the up-down direction to lock the electronic card. The electronic card is inserted backward into the slot, and a force in a second direction opposite to the first direction is applied to the elastic arm in the up-down direction, so that the elastic arm is deflected in the second direction, which is convenient for the user to operate the elastic arm to unlock the electronic card.

Brief Description of the Drawings

[0026] Figure 1 A three-dimensional diagram of a connector assembly and an electronic card of the utility model;

[0027] Figure 2 for Figure 1 A perspective view of the electronic card before it is inserted into the connector assembly;

[0028] Figure 3 for Figure 2 A front view of the connector assembly;

[0029] Figure 4 for Figure 3 Sectional view along line AA;

[0030] Figure 5 for Figure 3 A cross-sectional view taken along line BB;

[0031] Figure 6 for Figure 5 Schematic diagram of the middle ear clip being assembled on the insulating body;

[0032] Figure 7 for Figure 2 A perspective view of the middle connector assembly at another viewing angle with the ear clip separated from the insulating body;

[0033] Figure 8 for Figure 2 Exploded perspective view of the mid-card edge connector;

[0034] Fig. 9 for Figure 8 Stereoscopic view of the middle ear button;

[0035] Fig.10 for Figure 2 Top view of the mid-card edge connector.

[0036] Connector Assembly 1000 Circuit board 100 Card Edge Connector 200 Electronic card 300 Insulation body 1 Butt surface 1a Mounting surface 1b Top surface 1c Slot 11 Upper tank wall 111 Lower tank wall 112 First assembly unit 12 Stop surface 121 Mounting slot 122 Through slot 123 Conductive terminal 2 Contact Department 21 Welding foot 22 Main body 23 Ear studs 3 Second assembly unit 31 Limiting slot 311 Mounting arm 312 Limiting part 3121 Projection 313 Front face 314 Spring arm 32 Arm upper surface 321 Pressing portion 322 Buckle portion 33 Snap Vertex 331 Stopper 34 First fixing member 4a Second fixing member 4b Fixing portion 41 Welding part 42 Positioning piece 5 Rib 51 Back cover 6 First height H1 The second height H2 The third height H3 [Specific implementation method]

[0037] In order to facilitate a better understanding of the purpose, structure and features of the present utility model, the present utility model is further described in conjunction with the accompanying drawings and specific implementation methods.

[0038] For ease of understanding, the left-right direction is defined as X, the front-back direction is defined as Y, and the up-down direction is defined as Z. The left-right direction X, the front-back direction Y, and the up-down direction Z are perpendicular to each other.

[0039] like Figure 1 and Figure 2 , which is a stereoscopic view of a connector assembly 1000 of the present invention, the connector assembly 1000 includes a circuit board 100 and a card edge connector 200 mounted on the circuit board 100, the card edge connector 200 is used to plug an electronic card, so that the card edge connector 200 electrically connects the circuit board 100 with the electronic card 300. In this embodiment, the electronic card 300 is inserted into the card edge connector 200 backward along the front-to-back direction, and the card edge connector 200 is mounted on the circuit board 100 along the top-to-bottom direction.

[0040] like Figure 8 and Fig.10 As shown, the card edge connector 200 includes an insulating body 1 extending longitudinally along the left-right direction, an ear buckle 3 provided at one end of the insulating body 1 in the left-right direction, a plurality of conductive terminals 2 installed on the insulating body 1, a first fixing member 4a fixed to one end of the insulating body 1 in the left-right direction, a second fixing member 4b fixed to the other end of the insulating body 1 in the left-right direction, a positioning member 5 located between two rows of the conductive terminals 2, and a back cover 6 fixed to the insulating body 1. In this embodiment, the insulating body 1, the conductive terminals 2, the first fixing member 4a, the second fixing member 4b, the positioning member 5 and the back cover 6 together constitute a terminal module.

[0041] like Figure 4 and Figure 8 As shown, the insulating body 1 is provided with a mating surface 1a and a mounting surface 1b, the mating surface 1a is arranged facing forward in the front-to-back direction, and the mounting surface 1b is arranged facing downward in the up-down direction and is arranged face to face with the circuit board 100. In this embodiment, the mounting surface 1b and the mating surface 1a are perpendicular to each other. The insulating body 1 also includes a slot 11, which is formed by being recessed backward from the mating surface 1a along the front-to-back direction. The slot 11 is for the electronic card 300 to be inserted backward. The slot 11 is provided with an upper slot wall 111 and a lower slot wall 112 located below the upper slot wall 111. The upper slot wall 111 and the lower slot wall 112 define the slot 11. The height of the slot 11 in the up-down direction is a third height H3, that is, the distance between the upper slot wall 111 and the lower slot wall 112 in the up-down direction is the third height H3.

[0042] like Figure 4 , Figure 7 and Fig.10 As shown, the insulating housing includes a top surface 1c arranged opposite to the mounting surface 1b in the up-down direction and a first assembly portion 12 located on one side of the slot 11 in the left-right direction. The first assembly portion 12 includes a stop surface 121 and two mounting grooves 122, the mounting grooves 122 are formed by being recessed downward from the top surface 1c in the up-down direction, and the two mounting grooves 122 are "L" shaped and symmetrically arranged in the front-to-back direction when viewed from the top. The two mounting grooves 122 are spaced apart from each other in the front-to-back direction, the mounting grooves 122 penetrate the corresponding ends on the insulating body 1 outward in the left-to-right direction, and are recessed downward to the stop surface 121 in the up-down direction, the stop surface 121 is parallel to the top surface 1c, and the stop surface 121 is higher than the mounting surface 1b in the up-down direction and lower than the lower slot wall 112. The first assembly portion 12 also includes a through groove 123, and the through groove 123 connects the two mounting grooves 122 in the front-to-back direction.

[0043] like Figure 2 and Figure 4As shown, a plurality of the conductive terminals 2 are arranged on the insulating body 1, and the plurality of the conductive terminals 2 are arranged in two rows. Each of the conductive terminals 2 includes a contact portion 21 exposed in the slot 11 and electrically connected to the electronic card 300, a solder foot 22 extending out of the insulating body 1 and soldered to the circuit board 100, and a main body 23 connecting the contact portion 21 and the solder foot 22. The contact portions 21 of the two rows of conductive terminals 2 are also arranged in two rows and are arranged on the upper and lower sides of the slot 11. The solder feet 22 of the two rows of conductive terminals 2 are arranged in two rows in the front-to-back direction, and the solder feet 22 are soldered to the circuit board 100 by surface soldering technology.

[0044] like Figure 6 and Fig. 9 As shown, the ear button 3 is an integrated structure made of insulating material. The ear button 3 is made of a different material from the insulating body 1. In this embodiment, the ear button 3 is assembled to the insulating body 1 from top to bottom. The ear button 3 is first installed on the terminal module, and then the card edge connector 200 is installed on the circuit board 100. In other embodiments, the ear button 3 can be assembled to the insulating body 1 from top to bottom after the terminal module is installed on the circuit board 100. Figure 7 and Fig. 9 As shown, the ear clip 3 includes a second assembly part 31, an elastic arm 32, a buckle part 33 and a stop part 34. The second assembly part 31 is assembled to the first assembly part 12 along the up-down direction. The elastic arm 32 and the stop part 34 are extended from the second assembly part 31 along the left-right direction toward the side away from the slot 11. The elastic arm 32 and the stop part 34 are located on the same side of the second assembly part 31. The stop part 34 is spaced apart from the elastic arm 32 in the up-down direction to prevent the elastic arm 32 from excessively deflecting in the up-down direction.

[0045] like Figure 3 , Figure 6 and Fig. 9 As shown, the second assembling part 31 is assembled to the first assembling part 12 along the up and down direction. In this embodiment, the second assembling part 31 is assembled downward to the first assembling part 12. The second assembling part 31 includes a limiting groove 311, two mounting arms 312 and a protrusion 313 protruding from each of the mounting arms 312.

[0046] like Figure 1 and Figure 3As shown, the limiting groove 311 is formed by a concave surface of the second assembly part 31 on the side away from the slot 11 in the left-right direction, and the limiting groove 311 penetrates the second assembly part 31 forward. The limiting groove 311 is located above the upper surface 321 of the arm in the up and down direction to limit the electronic card 300. The limiting groove 311 is arranged opposite to the slot 11 in the left-right direction.

[0047] like Fig. 9 and Fig.10 As shown, the two mounting arms 312 are arranged opposite to each other in the front-to-back direction and are located on the side of the second assembly portion 31 facing the slot 11 in the left-right direction. The two mounting arms 312 are installed downwardly into the two mounting slots 122 one by one, wherein the front mounting arm 312 has a limiting portion 3121, and the limiting portion 3121 is respectively arranged adjacent to the limiting slot 311 and the slot 11 in the left-right direction, that is, the limiting portion 3121 is located between the limiting slot 311 and the slot 11 in the left-right direction.

[0048] like Figure 5 and Figure 6 As shown, the two protrusions 313 of the second assembly portion 31 are protruded from the sides of the two mounting arms 312 facing each other in the front-to-back direction. When the mounting arms 312 are assembled downward into the mounting grooves 122 and reach the stop surface 121 downward, the protrusions 313 protrude into the through grooves 123 to prevent the ear buckle 3 from escaping upward from the insulating body 1.

[0049] like Fig. 9 and Fig.10 As shown, the second assembly portion 31 further includes a front end surface 314 , and the front end surface 314 is arranged to face forward in the front-to-back direction, and the front end surface 314 is arranged flush with the docking surface 1 a .

[0050] like Figure 3 and Fig. 9 As shown, the elastic arm 32 extends straightly in the left-right direction and is parallel to the circuit board 100. The elastic arm 32 includes an arm upper surface 321 and a pressing portion 322. The arm upper surface 321 is arranged to face upward and is approximately parallel to the top surface 1c and the circuit board 100. The arm upper surface 321 is located below the lower groove wall 112 in the up-down direction. The pressing portion 322 is used for the user to apply a force in the up-down direction thereon to make the elastic arm 32 deflect in the up-down direction. The height of the pressing portion 322 to the mounting surface 1b in the up-down direction is a second height H2, and the second height H2 is greater than the third height H3.

[0051] like Figure 3As shown, the buckle portion 33 is convexly arranged in a first direction relative to the elastic arm 32 in the vertical direction, and the buckle portion 33 is used to lock the electronic card 300. A force is applied to the pressing portion 322 in a second direction opposite to the first direction in the vertical direction, so that the elastic arm 32 is deflected in the second direction, and the buckle portion 33 is driven to move along the second direction to unlock the electronic card 300. In this embodiment, the first direction is an upward direction, and the second direction is a downward direction, that is, the buckle portion 33 is formed by protruding upward from the upper surface 321 of the arm in the vertical direction, and the pressing portion 322 is pressed downward, so that the elastic arm 32 is deflected downward, and the buckle portion 33 is driven to move downward, and the electronic card 300 is unlocked. The highest point of the buckle portion 33 protruding upward from the arm upper surface 321 is defined as a buckle vertex 331. The buckle vertex 331 is located above the lower groove wall 112 in the up and down directions and does not exceed the upper groove wall 111. In the present embodiment, the buckle vertex 331 is arranged roughly flush with the upper groove wall 111. The height of the buckle portion 33 protruding upward from the arm upper surface 321 is a first height H1, and the first height H1 is less than the second height H2.

[0052] like Figure 3 As shown, in this embodiment, the stopper 34 is located below the elastic arm 32 to prevent the elastic arm 32 from swinging excessively when the elastic arm 32 is pressed downward. In other embodiments, the buckle portion 33 is formed to protrude downward relative to the elastic arm 32 in the vertical direction, so that the user pushes the pressing portion 322 upward to make the elastic arm 32 swing upward, drive the buckle portion 33 to move upward, unlock the electronic card 300, and allow the electronic card 300 to move forward and be pulled out from the slot 11.

[0053] like Figure 3 and Figure 8 As shown, the first fixing member 4a and the second fixing member 4b are both stamped from metal plates and are arranged at the left and right ends of the insulating body 1. The first fixing member 4a and the second fixing member 4b both have a fixing portion 41 and a welding portion 42 formed by bending and extending from the bottom end of the fixing portion 41. The fixing portion 41 extends in the up-down direction and is in the shape of a flat plate. The fixing portion 41 is fixed to the insulating body 1. The welding portion 42 is bent and extended in the left-right direction relative to the fixing portion 41 toward a side away from the slot 11. The welding portion 42 is used for surface welding on the circuit board 100. The fixing portion 41 of the first fixing member 4a is fixed to the first assembling portion 12, and the fixing portion 41 of the second fixing member 4b is fixed to the other end of the insulating body 1 relative to the first assembling portion 12.

[0054] like Figure 4 and Figure 8As shown, the positioning member 5 is clamped on the insulating body 1 and is located outside the slot 11 in the front-to-back direction. The positioning member 5 is arranged at the rear end of the insulating body 1. The positioning member 5 is arranged between the main bodies 23 of the two rows of the conductive terminals 2. The positioning member 5 includes a plurality of ribs 51. The plurality of ribs 51 are arranged on the front and rear sides of the positioning member 5. The plurality of ribs 51 on each side of the front and rear sides of the positioning member 5 are arranged side by side and spaced apart in the left-right direction. The main body 23 of each conductive terminal 2 is limited between two adjacent ribs 51.

[0055] like Figure 4 and Figure 8 As shown, the rear cover 6 is located at the rear side of the insulating body 1 and is clamped with the insulating body 1. The rear cover 6 is located outside the main body 23 of the conductive terminal 2 and is crimped onto the main body 23 of the conductive terminal 2 that is closer to the rear side in the two rows of conductive terminals 2.

[0056] The beneficial effects of the card edge connector and connector assembly of the utility model are as follows:

[0057] 1) The buckle portion 33 protrudes upward from the upper surface 321 of the elastic arm 32, and the operator only needs to press the elastic arm 32 downward, that is, the elastic arm 32 is subjected to a downward force, so that the elastic arm 32 swings toward the direction close to the circuit board 100, which is easy to operate and reasonably utilizes the space between the ear buckle 3 and the circuit board 100 in the upper and lower directions, avoiding space waste.

[0058] 2) The buckle vertex 331 is lower than the upper slot wall 111 and higher than the lower slot wall 112 in the vertical direction, ensuring that the electronic card 300 can be locked and avoiding the need for the elastic arm 32 to deflect significantly to unlock the electronic card 300.

[0059] 3) The protrusion 313 extends into the through slot 123 , thereby preventing the ear clip 3 from being separated from the insulating body 1 in the up and down directions.

[0060] 4) The elastic arm 32 extends substantially parallel to the circuit board 100 , thereby ensuring the distance between the elastic arm 32 and the circuit board 100 in the vertical direction and preventing the elastic arm 32 from contacting the circuit board 100 when the elastic arm 32 is deflected.

[0061] 5) The first height H1 is smaller than the second height H2, so as to prevent the ear button 3 from hitting the circuit board 100 when unlocking the electronic card 300.

[0062] 6) The third height H3 is smaller than the second height H2 because the buckle vertex 331 is generally not higher than the upper surface of the electronic card 300 inserted in the slot 11, that is, the upper slot wall 111 of the slot 11. Therefore, it is ensured that when the ear buckle 3 is deflected in the up and down directions, the electronic card 300 can be unlocked smoothly.

[0063] 7) The second assembling portion 31 is assembled to the first assembling portion 12 along the up-down direction, so that it is convenient for the ear clip 3 to be assembled to the insulating body 1 , and the ear clip 3 can be assembled after the terminal module is installed on the circuit board 100 .

[0064] The above detailed description is only an explanation of the preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.

Claims

1. A card edge connector, mounted on a circuit board, for electrically plugging an electronic card, characterized in that: include: An insulating body, the insulating body having a mounting surface facing downward in the up-down direction and a docking surface facing forward in the front-back direction, the mounting surface facing downward to the circuit board, the insulating body having a slot passing through the docking surface forwardly for the electronic card to be inserted backwardly; A plurality of conductive terminals, each of which is disposed on the insulating body and has a contact portion exposed in the slot; An ear buckle, the ear buckle is arranged at one end of the insulating body in the left-right direction, the ear buckle is provided with an elastic arm extending outward toward one side in the left-right direction relative to the insulating body, and a buckle portion protruding in a first direction relative to the elastic arm in the up-down direction, the buckle portion is used to lock the electronic card, and a force is applied to the elastic arm in a second direction opposite to the first direction in the up-down direction, so that the elastic arm is deflected in the second direction to unlock the electronic card.

2. The card edge connector according to claim 1, wherein: The elastic arm comprises an upper surface of the arm, and the buckle portion protrudes upward from the upper surface of the arm. When unlocking, a downward force is applied to the elastic arm to make the elastic arm deflect downward to unlock the electronic card.

3. The card edge connector according to claim 2, wherein: The height of the buckle portion protruding upward from the upper surface of the arm is a first height; the elastic arm includes a pressing portion for applying a downward force, and the height of the pressing portion to the mounting surface in the up and down directions is a second height, and the second height is greater than the first height.

4. The card edge connector according to claim 2, wherein: The elastic arm includes a pressing portion for applying downward force, the height of the pressing portion to the mounting surface in the vertical direction is a second height, the height of the slot in the vertical direction is a third height, and the third height is less than the second height.

5. The card edge connector according to claim 2, wherein: The slot is provided with an upper slot wall and a lower slot wall located above the upper slot wall, the upper slot wall and the lower slot wall define the slot, and the highest point of the buckle portion protruding upward from the upper surface of the arm is defined as the buckle vertex, the buckle vertex is higher than the lower slot wall but not higher than the upper slot wall in the up and down direction, and the upper surface of the arm is not higher than the lower slot wall.

6. The card edge connector according to claim 1, wherein: The insulating body has a first assembly part, which is located on one side of the slot in the left-right direction. The ear buckle has a second assembly part, the elastic arm is extended from the second assembly part, and the second assembly part is assembled to the first assembly part along the up-down direction.

7. The card edge connector according to claim 6, wherein: It further includes a first fixing member, which has a fixing portion and a welding portion formed by bending and extending from the bottom end of the fixing portion, the welding portion is bent and extended in the left and right directions relative to the fixing portion toward a side away from the slot, the fixing portion is fixed to the first assembly portion, and the welding portion is used for surface welding to the circuit board.

8. The card edge connector according to claim 6, wherein: The insulating body has a top surface opposite to the mounting surface in the up and down directions, the first assembly part has a stop surface, the stop surface is arranged upward, and the stop surface is higher than the mounting surface and lower than the slot in the up and down directions, the second assembly part is assembled to the first assembly part from top to bottom, and the stop surface stops the first assembly part upward.

9. The card edge connector according to claim 6, wherein: The second assembly portion has a limiting portion, and the limiting portion is arranged adjacent to the slot in the left and right directions.

10. The card edge connector according to claim 9, wherein: The second assembly portion has a front end surface, and the front end surface is arranged flush with the butt joint surface.

11. The card edge connector according to claim 1, wherein: The elastic arm extends linearly along the left-right direction.

12. A connector assembly, characterized in that: include: a circuit board; A card edge connector, mounted downwardly on the circuit board, for electrically plugging an electronic card, the card edge connector comprising a terminal module and an ear buckle; The terminal module includes an insulating body and a plurality of conductive terminals disposed on the insulating body, wherein the insulating body has a mating surface, the insulating body is provided with a slot, the slot passes through the mating surface forwardly for the electronic card to be inserted backwardly, the conductive terminals are disposed on the insulating body, and the conductive terminals have a contact portion exposed in the slot; The ear buckle is arranged at one end of the insulating body in the left-right direction, and the ear buckle is provided with an elastic arm extending outward toward one side in the left-right direction relative to the insulating body, and a buckle portion protruding in a first direction relative to the elastic arm in the up-down direction, the buckle portion is used to lock the electronic card, and a force is applied to the elastic arm in a second direction opposite to the first direction in the up-down direction, so that the elastic arm is deflected in the second direction to unlock the electronic card.

13. The connector assembly according to claim 12, wherein: The elastic arm comprises an upper surface of the arm, and the buckle portion protrudes upward from the upper surface of the arm. When unlocking, a downward force is applied to the elastic arm to make the elastic arm deflect downward to unlock the electronic card.

14. The connector assembly according to claim 13, wherein: The height of the buckle portion protruding upward from the upper surface of the arm is a first height; the elastic arm includes a pressing portion for applying a downward force, and the height of the pressing portion to the circuit board in the up and down directions is greater than the first height.

15. The connector assembly according to claim 12, wherein: The elastic arm is arranged parallel to the circuit board.

16. The connector assembly according to claim 12, wherein: The insulating body has a first assembly part, which is located on one side of the slot in the left-right direction. The ear buckle has a second assembly part, the elastic arm is extended from the second assembly part, and the second assembly part is assembled to the first assembly part along the up-down direction.

17. The connector assembly according to claim 16, wherein: The conductive terminal has a welding foot, which is exposed from the insulating body and welded to the circuit board. The ear clip is assembled on the insulating body after the terminal module is welded to the circuit board.

18. The connector assembly of claim 16, wherein: The terminal module further includes a first fixing member, which has a fixing portion and a welding portion formed by bending and extending from the bottom end of the fixing portion, and the welding portion is bent and extended in the left and right directions relative to the fixing portion toward a side away from the slot, the fixing portion is fixed to the first assembly portion, and the surface of the welding portion is welded to the circuit board.

Images