CN219892486U - Card edge connector and connector assembly - Google Patents

Abstract

The utility model discloses a card edge connector and a connector assembly composed of the card edge connector and a memory module, wherein the card edge connector comprises an insulating body, the insulating body comprises two side walls and a bottom wall which are opposite along the transverse direction, and a clamping groove formed by surrounding the two side walls and the bottom wall, the side walls are provided with terminal grooves communicated with the clamping groove, an opening is formed on one surface of the insulating body in the clamping groove for the memory module to be inserted into, and the distance between a conductive terminal and the opening is larger than the height of the conductive terminal protruding from the bottom wall towards the opening; the memory module comprises a substrate, a plurality of conducting strips arranged on two sides of the substrate and a plurality of elastic contact pieces fixed with the conducting strips, wherein the elastic contact pieces are provided with elastic arms which are in elastic contact with the conducting terminals, and the elastic contact pieces are formed on the memory module by canceling part of the length of the elastic contact arms in the prior art, so that the overall height of the conducting terminals is reduced, and good elastic contact between the conducting terminals and the memory module is provided.

Description

Card edge connector and connector assembly

[ field of technology ]

The present utility model relates to a card edge connector and a connector assembly formed by the card edge connector and a matched memory module, and more particularly, to a card edge connector and a connector assembly for reducing electromagnetic interference.

[ background Art ]

In the conventional computer system, a circuit board is provided with several side-by-side card edge connectors, each card edge connector is used for inserting an electronic card, the structure of each card edge connector generally comprises an insulating body and a plurality of conductive terminals, the insulating body comprises two opposite side walls and a bottom wall, the two side walls and the bottom wall enclose to form a clamping groove, the plurality of conductive terminals are mounted on the two side walls, each conductive terminal is in a longitudinal structure, each conductive terminal comprises a main body part, an elastic contact arm extending from one end of the main body part and a welding part extending from the other end of the main body part, the main body part is fixedly arranged on the insulating body, the welding part is exposed from the bottom wall and welded to the circuit board, the elastic contact arm extends into the clamping groove for inserting the electronic card, the elastic contact arm is provided with a contact part at the opening end of the clamping groove far away from the bottom wall, and the contact part is in butt joint with a golden finger on the electronic card to form an electrical connection.

However, in a computer system, a plurality of card edge connectors are not used at the same time, a part of the card edge connectors are inserted into an electronic card, and another part of the card edge connectors are empty, so that when the card slot of the card edge connector is empty, the electronic card is not inserted, and the conductive terminals in the empty card edge connectors generate a longer antenna, so that the antenna effect is very strong, and the divergent electromagnetic wave can generate electromagnetic interference to the card edge connectors or other electrical components in the connection system in the vicinity of the card edge connectors.

Accordingly, there is a need to design a new connector assembly to ameliorate the above-mentioned problems.

[ utility model ]

The utility model provides a card edge connector and a connector assembly, which can shorten the length of a conductive terminal and reduce electromagnetic interference.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a card edge connector for plugging with a memory module, comprising: the insulation body comprises two side walls and a bottom wall which are opposite in the transverse direction, a clamping groove is formed by surrounding the two side walls and the bottom wall, a terminal groove is formed in the side walls, the terminal groove is communicated with the clamping groove in the transverse direction, an opening is formed in the clamping groove on one side surface of the insulation body in the inserting direction for inserting the memory module, and the inserting direction is perpendicular to the transverse direction; the conductive terminal is arranged on the insulating body, extends beyond the bottom wall in the plugging direction and faces the opening direction, and comprises a main body part, a butt joint part formed by extending from one end of the main body part and a pin formed by extending from the other end of the main body part, wherein the butt joint part is used for being connected with the memory module in a guiding way, and the butt joint part is accommodated in the terminal groove and does not protrude into the clamping groove no matter the memory module is inserted into or not inserted into the clamping groove; in the plugging direction, the distance between the conductive terminal and the opening is larger than the protruding height of the conductive terminal relative to the bottom wall towards the opening.

Further, the main body portion extends along the plugging direction, and the abutting portion is formed by bending and extending from one end of the main body portion in a direction away from the clamping groove in the transverse direction, and then bending and extending in a direction close to the clamping groove.

Further, the butt joint is substantially C-shaped.

Further, the conductive terminal is formed by stamping and bending a metal plate, the thickness of the main body part in the transverse direction is the thickness of the metal plate, the butt joint part continues to extend out of the guide part, and the thickness of the guide part gradually becomes thinner from the butt joint part to a direction away from the butt joint part.

Further, the conductive terminal has a guiding portion connected to an end of the abutting portion away from the main body portion, the guiding portion is provided with a first guiding surface, and the first guiding surface is formed by extending the abutting portion obliquely in a direction of inserting and connecting the abutting portion toward the opening and toward a side of the clamping groove in a lateral direction.

Further, the guide part is also provided with a second guide surface, and the second guide surface is formed by the inclined extension of the first guide surface towards one side far away from the clamping groove in the transverse direction and towards the opening in the inserting direction.

Further, the insulating body is further concavely provided with a yielding groove at one side of the terminal groove, which is far away from the clamping groove in the transverse direction, the yielding groove is arranged corresponding to the abutting portion in the transverse direction, and the yielding groove is used for allowing the abutting portion to enter when the abutting portion is elastically deformed.

Further, the portion extending from the main body portion toward the opening does not exceed the main body portion on the side surface facing the card slot in the lateral direction.

Further, the insulating body is provided with two inner side surfaces and a butt joint surface which are oppositely arranged in the transverse direction, the clamping groove is formed between the two inner side surfaces, the opening is formed on the butt joint surface, the terminal groove penetrates through the inner side surfaces and forms a first window on the inner side surfaces, the terminal groove penetrates through the butt joint surface and forms a second window on the butt joint surface, and the first window is communicated with the second window.

Compared with the prior art, the card edge connector has the following beneficial effects:

in the direction of inserting, the distance between the conductive terminal and the opening is greater than the height of the conductive terminal, which is opposite to the bottom wall and protrudes towards the opening, the overall height of the conductive terminal is reduced, so that when the card edge connector is empty, the length of the conductive terminal for generating a stake effect is shortened, and electromagnetic interference to the card edge connector in side operation is reduced.

The utility model also adopts the following technical scheme:

a connector assembly, comprising: the memory module comprises a substrate, a plurality of conductive sheets and a plurality of elastic contact pieces, wherein the substrate is provided with two side faces oppositely arranged along the transverse direction, the plurality of conductive sheets are arranged on the two side faces, the plurality of elastic contact pieces are fixed with the plurality of conductive sheets, the elastic contact pieces are provided with fixing parts and elastic arms which are formed by extending from the fixing parts, the elastic arms are provided with contact parts, and the fixing parts are fixed on the corresponding conductive sheets; the card edge connector comprises an insulating body and a plurality of conductive terminals arranged on the insulating body; the insulating body comprises two side walls opposite to each other along the transverse direction and a bottom wall connected with the two side walls, a clamping groove is formed by surrounding the two side walls and the bottom wall, each side wall is provided with a terminal groove, the conductive terminal is installed in the terminal groove, the terminal groove is communicated with the clamping groove in the transverse direction, the clamping groove penetrates through the insulating body along one side in the plugging direction and forms an opening in the insulating body, the plugging direction is perpendicular to the transverse direction, the clamping groove is used for the insertion of the memory module, and in the plugging direction, the distance between the conductive terminal and the opening is larger than the protruding height of the conductive terminal relative to the bottom wall towards the opening; the conductive terminal comprises a main body part, a butt joint part extending from one end of the main body part and a pin extending from the other end of the main body part, and when the memory module is inserted into the clamping groove, the spring arm protrudes into the clamping groove, so that the contact part is in contact with the butt joint part to form electric connection.

Further, the spring arm is provided with a connecting portion, the connecting portion is connected between the contact portion and the fixing portion, and the contact portion is formed by bending and extending the connecting portion in a direction away from the substrate in a transverse direction, and then bending and extending the connecting portion in a direction close to the substrate.

Further, the main body portion extends along the plugging direction, and the abutting portion is formed by bending and extending from one end of the main body portion in a direction away from the clamping groove in a transverse direction, and then bending and extending in a direction close to the clamping groove.

Further, the contact portion forms a multipoint contact with the abutting portion.

Further, the substrate is provided with a plurality of concave parts in the two side surfaces respectively, the concave parts are formed by inwards sinking the corresponding side surfaces in the transverse direction, and the concave parts are arranged corresponding to the spring arms in the transverse direction and are used for giving way to the spring arms when the contact part is contacted with the abutting part.

Further, the base plate has an end face facing the bottom wall in the insertion direction, the recess penetrates the end face, and the recess is provided in the lateral direction corresponding to the connection portion and the contact portion.

Further, the conductive terminal has a guiding portion connected to an end of the abutting portion away from the main body portion, the guiding portion is provided with a first guiding surface, the first guiding surface is formed by extending a side of the abutting portion facing the clamping groove in a transverse direction obliquely toward a side away from the clamping groove and toward the opening in a plugging direction, and the first guiding surface is used for guiding the contact portion.

Further, the substrate has an end face facing the bottom wall in the plugging direction, the contact portion extends beyond the end face toward one side of the bottom wall in the plugging direction, the bottom wall is provided with a plurality of accommodating grooves penetrating the bottom wall in the plugging direction and communicating with one of the terminal grooves in the transverse direction, and the accommodating grooves are used for accommodating portions of the contact portion beyond the end face.

Further, the guiding portion further has a second guiding surface, the second guiding surface is formed by extending the first guiding surface obliquely in a lateral direction towards a side away from the clamping groove and in a plugging direction towards the opening, and the second guiding surface is used for guiding the contact portion.

Further, the conductive terminal and the elastic contact are each formed by punching a metal plate material, the metal plate material forming the conductive terminal has a plate thickness larger than that of the metal plate material forming the elastic contact, and the abutting portion and the contact portion are brought into contact on the plate surfaces facing each other.

Further, the insulating body is provided with two inner side surfaces and a butt joint surface, the two inner side surfaces are oppositely arranged in the transverse direction, the clamping grooves are limited in the transverse direction, the opening is formed in the butt joint surface, the terminal groove penetrates through the inner side surfaces and forms a first window on the inner side surfaces, the terminal groove penetrates through the butt joint surface and forms a second window on the butt joint surface, and the first window is communicated with the second window to allow the corresponding elastic contact piece to be in a clearance fit.

Further, the abutting portion is received in the terminal groove without protruding into the card groove, regardless of whether the memory module is inserted or not inserted into the card groove.

Compared with the prior art, the connector assembly has the following beneficial effects:

in the plug-in direction, the distance between the conductive terminal and the opening is greater than the height of the conductive terminal protruding towards the opening relative to the bottom wall, and a part of the length of an elastic contact arm in the prior art is cancelled and moved to the memory module to form the elastic contact piece, so that the whole height of the conductive terminal is reduced, the length of the conductive terminal for generating a stake effect is shortened when the card edge connector is empty, the electromagnetic interference to the card edge connector in the side operation is reduced, and the elastic arm can ensure stable mechanical contact between the memory module and the conductive terminal, so that stable electrical connection is achieved.

[ description of the drawings ]

FIG. 1 is an exploded perspective view of a connector assembly and circuit board of the present utility model;

FIG. 2 is an enlarged view of region A of FIG. 1;

FIG. 3 is a partial schematic view of a portion of a spring contact separation substrate in the memory module of FIG. 1;

FIG. 4 is a perspective view of the connector assembly and circuit board of FIG. 1;

FIG. 5 is a partial cross-sectional view of the memory module of FIG. 1 and a card edge connector taken along a plane perpendicular to the lateral direction when not fully mated;

FIG. 6 is a cross-sectional view of the memory module of FIG. 5 taken along a plane perpendicular to the longitudinal direction when not fully mated with the card edge connector;

FIG. 7 is an enlarged view of a portion of region B of FIG. 6;

FIG. 8 is a schematic diagram showing the memory module of FIG. 6 continuing to move downward during the process of docking with the card edge connector but not fully docked;

FIG. 9 is a schematic diagram of the memory module of FIG. 8 continuing to move downward to fully mate with the card edge connector.

Reference numerals of the specific embodiments illustrate:

[ detailed description ] of the utility model

For a better understanding of the utility model with objects, structures, features, and effects, the utility model will be described further with reference to the drawings and to the detailed description.

For ease of understanding, the definition transverse direction is denoted by X, the longitudinal direction is denoted by Y, the mating direction is denoted by Z, and the transverse direction X, the longitudinal direction Y and the mating direction Z are perpendicular to each other.

As shown in fig. 1 and fig. 4, the connector assembly 1000 of the present utility model and the circuit board 2000 are schematic diagrams, the connector assembly 1000 includes a card edge connector 100 and a memory module 200 plugged in the card edge connector 100, the card edge connector 100 is configured to be mounted on a circuit board 2000, in this embodiment, the card edge connector 100 is a DIMM connector, the memory module 200 is a dual in-line memory module, and the circuit board 2000 is mounted with a plurality of card edge connectors 100 side by side, and the plugging direction is up and down. In other embodiments, the plugging direction may be other directions, such as an oblique direction having a certain inclination angle with the up-down direction.

As shown in fig. 1 and 4, the card edge connector 100 includes an insulative housing 1, a plurality of conductive terminals 2, and two lugs (not shown) pivotally connected to two longitudinal ends of the insulative housing 1, wherein the lugs (not shown) are rotatable relative to the insulative housing 1 and are switchable between an open position and a closed position for unlocking and locking the memory module 200.

As shown in fig. 1, 2 and 6, the insulating body 1 includes a mating surface 11 and a mounting surface 12 disposed opposite to each other along the plugging direction, and the mounting surface 12 is configured to face the circuit board 2000. The insulating body 1 includes two side walls 13 and a bottom wall 14, the two side walls 13 are disposed opposite to each other along a transverse direction, the side walls 13 and the bottom wall 14 extend along a longitudinal direction, the two side walls 13 and the bottom wall 14 enclose to form a slot 15, the memory module 200 is inserted into the slot 15 along an inserting direction, and the slot 15 forms an opening 151 on the abutting surface 11 for inserting the memory module 200.

As shown in fig. 2, 5 and 6, each of the side walls 13 is provided with a plurality of terminal grooves 131, two of the side walls 13 respectively have an inner side surface 133 facing each other, two of the inner side surfaces 133 define the card slot 15 in the lateral direction, each of the terminal grooves 131 is provided with a first window 134 in the inner side surface 133, the first window 134 extends from the bottom wall 14 to the abutting surface 11, the terminal grooves 131 and the card slot 15 communicate in the lateral direction through the first window 134, the terminal grooves 131 penetrate from the mounting surface 12 to the abutting surface 11 in the plugging direction, the terminal grooves 131 form a second window 135 in the abutting surface 11, the second window 135 extends in the lateral direction to the corresponding inner side surface 133, and the first window 134 and the second window 135 communicate with each other. Each side wall 13 is further provided with a recess 132 at a side of each terminal slot 131 away from the card slot 15 along the transverse direction, and the recess 132 communicates with the corresponding terminal slot 131 and extends to the abutting surface 11 in the abutting direction. The bottom wall 14 is provided with a plurality of accommodating grooves, the accommodating grooves penetrate through the bottom wall 14 along the plugging direction, the accommodating grooves are in two rows in the transverse direction, each row of accommodating grooves corresponds to the terminal grooves 131 on the adjacent side wall 13 one by one, and the accommodating grooves are communicated with the corresponding terminal grooves 131 in the transverse direction.

As shown in fig. 1, 2 and 5, the insulating body 1 further includes two tower portions 16 located at opposite ends of the clamping groove 15 in the longitudinal direction, each of the tower portions 16 accommodates one of the lugs (not shown), and the tower portion 16 protrudes in the plugging direction toward a side away from the mounting surface 12 with respect to the abutting surface 11, that is, in this embodiment, the tower portion 16 protrudes upward with respect to the abutting surface 11. The tower 16 is provided with a guide groove 161 communicating with the clamping groove 15, the guide groove 161 penetrates the corresponding tower 16 toward a side away from the mounting surface 12 in the plugging direction, and penetrates portions of the corresponding tower 16 protruding from the abutting surface 11 toward sides of the two towers 16 facing each other in the longitudinal direction.

As shown in fig. 5 and 6, the plurality of conductive terminals 2 are mounted in the plurality of terminal grooves 131 in a one-to-one correspondence, and each of the conductive terminals 2 includes a main body 21, a butt portion 23 extending from one end of the main body 21, a pin 22 extending from the other end of the main body 21, and a guide portion 24 extending continuously from the butt portion 23. The abutting portion 23 and the guiding portion 24 are both accommodated in the corresponding terminal groove 131, but do not protrude into the clamping groove 15 in the lateral direction, the main body portion 21 is fixed to the corresponding terminal groove 131 in an interference manner, and the pins 22 protrude from the mounting surface 12 to be soldered to the circuit board 2000. In the plugging direction, the distance D1 between the conductive terminal 2 and the opening 151 is greater than the height D2 of the conductive terminal 2 protruding toward the opening 151 with respect to the bottom wall 14.

As shown in fig. 6 and 7, the conductive terminal 2 is formed by stamping a metal plate, the main body 21 extends in the plugging direction in the corresponding terminal slot 131, and two plate surfaces of the main body 21 are disposed opposite to each other in the lateral direction, that is, the thickness of the main body 21 in the lateral direction is the plate thickness of the metal plate, and the abutting portion 23 is formed by bending and extending with respect to the plate surface of the main body 21. In the transverse direction, the abutting portion 23 is bent and extended from the upper end of the main body portion 21 in a direction away from the clamping groove 15, and then bent and extended in a direction close to the clamping groove 15, that is, the abutting portion 23 is approximately C-shaped, the abutting portion 23 is disposed corresponding to the relief groove 132 in the transverse direction, and the relief groove 132 is used for allowing the abutting portion 23 to enter when elastically deforming.

As shown in fig. 6 and 7, the plate thickness of the guide portion 24 becomes gradually thinner from the abutting portion 23 toward a direction away from the abutting portion 23, the guide portion 24 is provided with a first guide surface 241 and a second guide surface 242, the first guide surface 241 is formed by a side surface of the abutting portion 23 facing the card slot 15 in the lateral direction extending obliquely toward a side away from the card slot 15 and toward the opening 151 in the plugging direction, and the second guide surface 242 is formed by a side of the first guide surface 241 facing away from the card slot 15 in the lateral direction and extending obliquely toward the opening 151 in the plugging direction. In the transverse direction, the distance between the abutting portion 23 and the guide portion 24 and the corresponding inner side surface 133 is greater than the distance between the main body portion 21 and the corresponding inner side surface 133, i.e., the abutting portion 23 and the guide portion 24 do not extend beyond the plate surface of the main body portion 21 adjacent to the card slot 15 in the transverse direction. In other embodiments, the second guiding surface 242 may not be provided on the guiding portion 24, and the first guiding surface 241 may directly extend to another surface of the guiding portion 24 away from the card slot 15.

As shown in fig. 1 and 3, the memory module 200 includes a substrate 3 having two side surfaces 31 disposed opposite to each other in a lateral direction, a plurality of conductive pads 4 disposed on the two side surfaces 31, and a plurality of elastic contacts 5 fixed to the plurality of conductive pads 4, wherein the plurality of elastic contacts 5 are disposed in one-to-one correspondence with the plurality of conductive pads 4, and the plurality of elastic contacts 5 are configured to contact the plurality of conductive terminals 2 in one-to-one correspondence. The lower end of the base plate 3 further comprises an end surface 32 connecting the two side surfaces 31, and when the memory module 200 is completely docked with the card edge connector 100, the end surface 32 abuts against the upper surface of the bottom wall 14 exposed to the card slot 15. The substrate 3 is provided with a plurality of concave portions 33 on two side surfaces 31, the concave portions 33 are formed by being recessed inward in the transverse direction from the corresponding side surfaces 31, the concave portions 33 are arranged between the conductive sheets 4 and the end surfaces 32 in the plugging direction, the concave portions 33 penetrate through the end surfaces 32, the concave portions 33 on the same side surface 31 are arranged in one-to-one correspondence with the conductive sheets 4 in the plugging direction, and in the embodiment, the concave portions 33 extend from the corresponding conductive sheets 4 to the end surfaces 32.

As shown in fig. 3, 6 and 7, the elastic contact 5 is also formed by pressing a metal plate, and the metal plate W1 for forming the conductive terminal 2 is larger than the metal plate W2 for forming the elastic contact 5. The elastic contact 5 is provided with a fixing portion 51 and an elastic arm 52 extending from the fixing portion 51. The fixing portion 51 is fixed to the corresponding conductive sheet 4, the spring arm 52 includes a connection portion 521 connected to the fixing portion 51 and a contact portion 522 connected to the connection portion 521, the connection portion 521 is connected between the contact portion 522 and the fixing portion 51, the contact portion 522 is formed by bending and extending from the connection portion 521 in a direction away from the substrate 3 in a lateral direction, and then bending and extending in a direction approaching the substrate 3, and the contact portion 522 is also substantially in a C-shaped structure.

As shown in fig. 5, 6 and 9, regardless of whether the memory module 200 is inserted or not into the card slot 15, the abutting portion 23 is received in the terminal slot 131 without protruding into the card slot 15, and when the memory module 200 is inserted into the card slot 15, the spring arm 52 protrudes into the card slot 15 such that the contact portion 522 is in contact with the abutting portion 23 to form an electrical connection, the abutting portion 23 and the contact portion 522 are in contact on a plate surface facing each other, the width of the spring arm 52 in the longitudinal direction is smaller than the widths of the first window 134 and the second window 135, and when the memory module 200 is inserted into the card slot 15, the spring arm 52 can be connected with the conductive terminal 2 through the first window 134 and the second window 135, and the contact portion 522 and the corresponding abutting portion 23 are both in a C-shaped structure, so that the contact portion 522 and the abutting portion 23 can be in contact with multiple points.

As shown in fig. 6 to 9, the memory module 200 is shown in the illustration of different periods of time during the mating process with the card edge connector 100.

As shown in fig. 6, 7 and 8, in the process of inserting the memory module 200 into the card slot 15 and guiding the latch arm 52 to the abutting portion 23, the latch arm 52 is guided by at least one of the first guiding surface 241 and the second guiding surface 242, mainly by the first guiding surface 241, and when the memory module 200 is obliquely inserted into the card slot 15, the latch arm may be guided by the second guiding surface 242 first, and finally, as shown in fig. 9, when the memory module 200 is completely abutted to the card edge connector 100, the contact portion 522 extends beyond the end surface 32 in the inserting direction, and the receiving slot of the bottom wall 14 receives a portion of the contact portion 522 beyond the end surface 32.

In summary, the card edge connector and the connector assembly of the utility model have the following advantages:

(1) In the plugging direction, the distance D1 between the conductive terminal 2 and the opening 151 is greater than the height D2 of the conductive terminal 2 protruding toward the opening 151 relative to the bottom wall 14, so that the overall height of the conductive terminal 2 is reduced, the stake effect is effectively improved when the card edge connector 100 is empty, and electromagnetic interference to the card edge connector 100 in operation on the upper side of the circuit board 2000 is reduced.

(2) The elastic contact 5 is disposed on the memory module 200, so that the conductive terminal 2 can cancel a part of the length of the elastic contact arm in the prior art and move to the memory module 200 to form the elastic contact 5, so that the overall height of the conductive terminal 2 is shortened, the stake effect is improved, and the elastic arm 52 can ensure stable mechanical contact between the memory module 200 and the conductive terminal 2, thereby achieving stable electrical connection.

(3) The thickness of the elastic contact 5 is smaller than that of the main body 21 and the abutting portion 23 of the conductive terminal 2, so that the elastic contact 5 has better elasticity, and stable elastic connection between the memory module 200 and the card edge connector 100 can be ensured.

(4) The first guiding surface 241 of the guiding portion 24 is formed by extending a side surface of the abutting portion 23 facing the card slot 15 in the lateral direction toward a side away from the card slot 15 and extending obliquely in the plugging direction toward the opening 151, so that the elastic contact 5 is electrically connected to the abutting portion 23 when the memory module 200 is inserted into the card slot 15.

(5) The abutting portion 23 and the guiding portion 24 extending from the main body portion 21 toward the opening 151 do not exceed the surface of the main body portion 21 facing the clamping groove 15 in the lateral direction, that is, the abutting portion 23 and the guiding portion 24 do not extend into the clamping groove 15, and compared with the conventional terminal structure, the length of the conductive terminal 2 for generating the stake effect is further shortened.

(6) The first window 134 and the second window 135 are communicated, and the corresponding elastic contact element 5 is put aside, so that the elastic contact element 5 can penetrate through the first window 134 and the second window 135 to extend into the terminal groove 131, and conductive connection with the conductive terminal 2 is realized.

The above detailed description is merely illustrative of the preferred embodiments of the utility model and is not intended to limit the scope of the utility model, so that all equivalent technical changes that can be made by the present specification and illustrations are included in the scope of the utility model.

Claims (21)

1. A card edge connector for plugging with a memory module, comprising:

the insulation body comprises two side walls and a bottom wall which are opposite in the transverse direction, a clamping groove is formed by surrounding the two side walls and the bottom wall, a terminal groove is formed in the side walls, the terminal groove is communicated with the clamping groove in the transverse direction, an opening is formed in the clamping groove on one side surface of the insulation body in the inserting direction for inserting the memory module, and the inserting direction is perpendicular to the transverse direction;

the conductive terminal is arranged on the insulating body, extends beyond the bottom wall in the plugging direction and faces the opening direction, and comprises a main body part, a butt joint part formed by extending from one end of the main body part and a pin formed by extending from the other end of the main body part, wherein the butt joint part is used for being connected with the memory module in a guiding way, and the butt joint part is accommodated in the terminal groove and does not protrude into the clamping groove no matter the memory module is inserted into or not inserted into the clamping groove;

in the plugging direction, the distance between the conductive terminal and the opening is larger than the protruding height of the conductive terminal relative to the bottom wall towards the opening.

2. The card edge connector of claim 1, wherein: the main body part extends along the inserting direction, and the butt joint part is formed by bending and extending from one end of the main body part in the transverse direction in the direction away from the clamping groove and then bending and extending in the direction close to the clamping groove.

3. The card edge connector of claim 2, wherein: the butt joint part is approximately C-shaped.

4. The card edge connector of claim 1, wherein: the conductive terminal is formed by stamping and bending a metal plate, the thickness of the main body part in the transverse direction is the plate thickness of the metal plate, the butt joint part continues to extend out of the guide part, and the plate thickness of the guide part gradually thins from the butt joint part to a direction far away from the butt joint part.

5. The card edge connector of claim 1, wherein: the conductive terminal is provided with a guide part connected to one end of the butt joint part far away from the main body part, the guide part is provided with a first guide surface, and the first guide surface is formed by obliquely extending one side of the butt joint part facing the clamping groove in the transverse direction towards one side far away from the clamping groove and towards the opening direction in the inserting direction.

6. The card edge connector as defined in claim 5, wherein: the guide part is also provided with a second guide surface, and the second guide surface is formed by the inclined extension of the first guide surface towards one side far away from the clamping groove in the transverse direction and towards the opening in the inserting direction.

7. The card edge connector of claim 1, wherein: the insulating body is further concavely provided with a yielding groove at one side, far away from the clamping groove, of the terminal groove in the transverse direction, the yielding groove is arranged corresponding to the butt joint part in the transverse direction, and the yielding groove is used for enabling the butt joint part to enter when the butt joint part is elastically deformed.

8. The card edge connector of claim 1, wherein: the portion extending from the main body portion toward the opening does not exceed the main body portion on the side surface facing the card slot in the lateral direction.

9. The card edge connector of claim 1, wherein: the insulating body is provided with two inner side surfaces and a butt joint surface which are oppositely arranged in the transverse direction, the clamping groove is formed between the two inner side surfaces, the opening is formed on the butt joint surface, the terminal groove penetrates through the inner side surfaces and forms a first window on the inner side surfaces, the terminal groove penetrates through the butt joint surface and forms a second window on the butt joint surface, and the first window is communicated with the second window.

10. A connector assembly, comprising:

the memory module comprises a substrate, a plurality of conductive sheets and a plurality of elastic contact pieces, wherein the substrate is provided with two side faces oppositely arranged along the transverse direction, the plurality of conductive sheets are arranged on the two side faces, the plurality of elastic contact pieces are fixed with the plurality of conductive sheets, the elastic contact pieces are provided with fixing parts and elastic arms which are formed by extending from the fixing parts, the elastic arms are provided with contact parts, and the fixing parts are fixed on the corresponding conductive sheets;

the card edge connector comprises an insulating body and a plurality of conductive terminals arranged on the insulating body;

the insulating body comprises two side walls opposite to each other along the transverse direction and a bottom wall connected with the two side walls, a clamping groove is formed by surrounding the two side walls and the bottom wall, each side wall is provided with a terminal groove, the conductive terminal is installed in the terminal groove, the terminal groove is communicated with the clamping groove in the transverse direction, the clamping groove penetrates through the insulating body along one side in the plugging direction and forms an opening in the insulating body, the plugging direction is perpendicular to the transverse direction, the clamping groove is used for the insertion of the memory module, and in the plugging direction, the distance between the conductive terminal and the opening is larger than the protruding height of the conductive terminal relative to the bottom wall towards the opening;

the conductive terminal comprises a main body part, a butt joint part extending from one end of the main body part and a pin extending from the other end of the main body part, and when the memory module is inserted into the clamping groove, the spring arm protrudes into the clamping groove, so that the contact part is in contact with the butt joint part to form electric connection.

11. The connector assembly of claim 10, wherein: the elastic arm is provided with a connecting part, the connecting part is connected between the contact part and the fixing part, and the contact part is formed by bending and extending the connecting part in the direction away from the substrate in the transverse direction and then bending and extending the connecting part in the direction close to the substrate.

12. The connector assembly of claim 11, wherein: the main body part extends along the inserting direction, and the butt joint part is formed by bending and extending from one end of the main body part in the transverse direction in the direction away from the clamping groove and then bending and extending in the direction close to the clamping groove.

13. The connector assembly of claim 12, wherein: the contact portion and the abutting portion form multi-point contact.

14. The connector assembly of claim 10, wherein: the substrate is provided with a plurality of concave parts in the two side surfaces respectively, the concave parts are formed by inwards sinking the corresponding side surfaces in the transverse direction, and the concave parts are arranged corresponding to the spring arms in the transverse direction and are used for giving way to the spring arms when the contact part is contacted with the butt joint part.

15. The connector assembly of claim 14, wherein: the base plate has an end face facing the bottom wall in the plugging direction, the recess penetrates the end face, and the recess is arranged corresponding to the connecting portion and the contact portion in the transverse direction.

16. The connector assembly of claim 10, wherein: the conductive terminal is provided with a guide part connected to one end of the butt joint part far away from the main body part, the guide part is provided with a first guide surface, the first guide surface is formed by obliquely extending one side of the butt joint part facing the clamping groove in the transverse direction towards one side far away from the clamping groove and in the inserting direction towards the opening direction, and the first guide surface is used for guiding the contact part.

17. The connector assembly of claim 16, wherein: the base plate is provided with an end face facing the bottom wall in the plugging direction, the contact part extends to one side of the bottom wall in the plugging direction and exceeds the end face, the bottom wall is provided with a plurality of accommodating grooves, the accommodating grooves penetrate through the bottom wall in the plugging direction and are communicated with one of the terminal grooves in the transverse direction, and the accommodating grooves are used for accommodating the part of the contact part exceeding the end face.

18. The connector assembly of claim 16, wherein: the guide part is also provided with a second guide surface, the second guide surface is formed by the inclined extension of the first guide surface towards one side far away from the clamping groove in the transverse direction and towards the opening in the inserting direction, and the second guide surface is used for guiding the contact part.

19. The connector assembly of claim 10, wherein: the conductive terminal and the elastic contact are respectively formed by stamping a metal plate, the metal plate forming the conductive terminal has a plate thickness larger than that of the metal plate forming the elastic contact, and the abutting part and the contact part are contacted on the plate surfaces facing each other.

20. The connector assembly of claim 10, wherein: the insulating body is provided with two inner side surfaces and a butt joint surface which are oppositely arranged in the transverse direction, the two inner side surfaces limit the clamping groove in the transverse direction, the opening is formed in the butt joint surface, the terminal groove penetrates through the inner side surfaces and forms a first window in the inner side surfaces, the terminal groove penetrates through the butt joint surface and forms a second window in the butt joint surface, the first window is communicated with the second window, and the corresponding elastic contact piece is in a yielding state.

21. The connector assembly of claim 10, wherein: the abutting portion is accommodated in the terminal groove without protruding into the card groove when the memory module is inserted or not inserted into the card groove.