CN102957008B - Card edge connector - Google Patents

Abstract

A card edge connector includes an insulating body with a card insertion port, and a plurality of blanking terminals arranged in the insulating body, and each terminal includes a fixing portion, a welding portion extending from one end of the fixing portion, an elastic arm extending from the other end of the fixing portion, and a contact portion connected to the end of the elastic arm, wherein the contact portion protrudes into the card insertion port, and each terminal has substantially the same width in the cross section of each part thereof; wherein the insulating body further includes a first terminal seat and a second terminal seat, and the fixing portion of each terminal is assembled between the first and second terminal seats.

Description

card edge connector

technical field

The invention relates to a card edge connector, in particular to a card edge connector applicable to memory modules, graphics card modules, solid state hard drive modules or wireless network card modules.

Background technique

In the past, it was used in card edge connectors such as memory modules (Memory Modules) such as desktop or portable notebook computers, network communication card modules, multimedia audio-visual modules and satellite positioning modules (GPS Modules), central processing units, and compilers and decoders. , Usually due to miniaturization, the distance between terminals cannot be further reduced, or problems such as signal interference are likely to occur in implementation, so it is difficult to apply to occasions with high frequency requirements. As shown in FIG. 1 , it is an internal schematic diagram of a conventional card edge connector. It is mainly made of the insulating body 1b to cover a plurality of bent terminals 2b in the form of in-mold injection, or the insulating body 1b is molded first and then the bent terminals 2b are inserted into it, and each terminal 2b is covered by the insulating body The portion covered by 1b is protrudingly provided with a tooth-shaped engaging portion 20b to increase the holding force with the insulating body 1b. Therefore, under the structure in which the terminals 2b and the insulating body 1b are fixed, the insulating body must reserve enough flesh thickness between the terminals 2b for the bite portions 20b of the terminals 2b to penetrate, so it is difficult to further reduce the size of the terminals 2b. spacing, or cause difficulties in connector molding and inconvenient assembly.

In addition, as shown in FIG. 2 , it is a schematic cross-sectional view of another existing card edge connector. It is mainly provided with upper and lower terminals 2a, 3a in the insulating body 1a, and provides a plug-in card module (not shown) inserted between the upper and lower terminals 2a, 3a. The upper and lower terminals 2a, 3a of the card edge connector are blanking type, and a fixing part 20a, 30a must be protrudingly provided on the direction formed by the terminals to be embedded in the insulating body 1a. The upper and lower terminals 2a, 3a are firmly assembled with the insulating body 1a to prevent the upper and lower terminals 2a, 3a from loosening or shifting. For this reason, one of the reasons why this kind of card edge connector cannot meet the high-frequency requirements is that the upper and lower terminals 2a, 3a must be firmly assembled in the insulating body 1a, and the fixed part 20a protruded , 30a. Because when the upper and lower terminals 2a, 3a provide signals for transmission, the cross sections passing through the fixing parts 20a, 30a suddenly become huge and wide, which will interfere with the signals.

Therefore, in order to solve the above problems, other technical solutions must be used to replace the conventional fixing method in which the connector terminals are disposed in the insulating body. In addition, the upper and lower terminals 2a and 3a of the above-mentioned other card edge connector belong to the blanking type, but in the past, the cross-sections of various parts of the blanking type terminals are not equal, which is also one of the reasons for affecting signal transmission. one.

Contents of the invention

The main purpose of the present invention is to provide a card edge connector, which is mainly an insulating body composed of two or more plastic parts, and the terminals of the card edge connector are fixed between these plastic parts. Furthermore, the fixing part of the terminal can be consistent with the forming direction of the terminal itself without any occlusal or bifurcated structure, so as to maintain a good signal transmission effect of the terminal.

Another object of the present invention is to provide a card edge connector in which the cross-sections of the terminals are substantially equal in width, so as to further reduce loss during high-frequency signal transmission.

In order to achieve the above-mentioned purpose, the present invention provides a card edge connector, which includes an insulating body with a card slot, and a plurality of blanking terminals arranged in the insulating body, and each terminal includes a fixing part, a A welding part extending from one end of the fixing part, an elastic arm extending from the other end of the fixing part, and a contact part connected to the end of the elastic arm. It is substantially equal in width; wherein, the insulating body further includes a plurality of terminal seats, and the fixing parts of each terminal are assembled between these terminal seats.

In order to achieve the above object, the present invention also provides a card edge connector, which includes an insulating body and a plurality of terminals disposed in the insulating body, the insulating body includes a first terminal base and a second terminal base, the first The terminal base has a first wall and a plurality of first clips, and the second terminal base also has a second wall and a plurality of second clips, and the first and second walls are spaced apart to form a socket Each terminal includes a fixed part, a welding part extending from one end of the fixed part, an elastic arm extended from the other end of the fixed part, and a contact part connected to the end of the elastic arm. The contact part protrudes from the plug In the bayonet, each terminal is substantially equal in cross-section in each part; wherein, the first and second clips of the first and second terminal bases are opposite to each other, and each terminal is distributed in the opposite first and second clips between the parts, and the opposite first and second clamping parts are clamped on the fixing parts of the terminals.

In order to achieve the above object, the present invention also provides a card edge connector, which includes an insulating body with a card slot, and a plurality of first terminals and second terminals disposed in the insulating body; each first terminal includes a The first fixing part, a first welding part extending from one end of the first fixing part, a first elastic arm extending from the other end of the first fixing part, and a first contact part connected to the end of the first elastic arm, The first contact portion protrudes from one side of the card slot; and each second terminal also includes a second fixing portion, a second welding portion extending from one end of the second fixing portion, and a second welding portion extending from the other end of the second fixing portion. The second elastic arm, and a second contact portion connected to the end of the second elastic arm, the second contact portion protrudes on the other side of the card slot; wherein, the insulating body further includes a first terminal seat and a The second terminal seat, and each first terminal is a blanking type, the cross-section of each part is substantially equal in width, the first fixing part of each first terminal is assembled between the first and second terminal seats, and each first terminal The second fixing portion of the two terminals is covered by the second terminal base.

Compared with the prior art, the present invention allows the terminals to further reduce the distance between each other, and does not need to provide any structure such as snapping or bifurcation for piercing the insulating body, so that good signal transmission of the terminals can be maintained The effect, especially applicable to high-frequency signals, can reduce the loss caused by high-frequency signal transmission.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

FIG. 1 is an internal schematic diagram of an existing card edge connector;

Fig. 2 is a schematic cross-sectional view of another existing card edge connector;

Fig. 3 is an exploded perspective view of the present invention;

Fig. 4 is the three-dimensional combination diagram of the present invention;

Fig. 5 is a schematic diagram of the appearance of the first terminal of the present invention;

Fig. 6 is a schematic view of the appearance of the second terminal of the present invention;

Fig. 7 is a schematic cross-sectional view of the clamping of the first terminal by the first and second terminal bases of the present invention;

Fig. 8 is a schematic cross-sectional view of the second terminal clamped by the first and second terminal bases of the present invention;

Fig. 9 is a schematic cross-sectional view of another embodiment of the present invention.

Among them, reference signs

current technology

Insulation body 1a, 1b

Terminal 2b snapping part 20b

Upper terminal 2a Fixed part 20a

Lower terminal 3a fixed part 30a

this invention

Insulation body 1

First Terminal Block 10 First Wall 100

The first clip 101 The first clip 101’

The first terminal slot 102 The second terminal seat 11

Second wall part 110 Second clip part 111

The second clamping part 111' the second terminal slot 112

card slot 12

First terminal 2

The first fixed part 20 The first welding part 21

First elastic arm 22 First contact part 23

Second terminal 3

The second fixed part 30 The second welding part 31

Second elastic arm 32 Second contact part 33

Detailed ways

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and accompanying drawings of the present invention. However, the accompanying drawings are provided for reference and illustration only, and are not intended to limit the present invention.

Please refer to FIG. 3 and FIG. 4 , which are respectively a three-dimensional exploded view and a three-dimensional assembled view of the present invention. The present invention provides a card edge connector, including an insulating body 1, and a plurality of blanking type terminals 2, 3 arranged in the insulating body 1; wherein:

The insulative body 1 is a horizontal strip body, and a card slot 12 is provided on it extending its transverse direction, which can be used for inserting cards such as electronic cards or circuit boards (not shown) into the insulative body 1, and then with the insulative body 1. The terminals 2 and 3 provided in the insulating body 1 are in electrical contact.

Please refer to Fig. 5 and Fig. 6 together, the above-mentioned multiple terminals 2, 3 can be divided into multiple first terminals 2 and multiple second terminals 3, and are blanking type; the so-called blanking type terminal is A sheet of metal is formed directly by punching without bending or the like. In the embodiment of the present invention, the first terminal 2 can be located above the second terminal 3 (as shown in FIG. 7 ), and each first terminal 2 includes a first fixing part 20, a A first welding portion 21 extending from one end of the fixing portion 20, a first elastic arm 22 extending from the other end of the first fixing portion 20, and a first contact portion 23 connected to the end of the first elastic arm 22; and the second The terminals 3 also include a second fixing portion 30, a second welding portion 31 extending from one end of the second fixing portion 30, a second elastic arm 32 extending from the other end of the second fixing portion 30, and a second elastic arm 32 connected to the second fixing portion 30. The second contact portion 33 at the end of the two elastic arms 32 . The first and second fixing parts 20 and 30 of each of the first and second terminals 2 and 3 are used for the terminals 2 and 3 to be assembled in the insulating body 1, and one end of each of the first and second fixing parts 20 and 30 is extended to The first and second welding parts 21 and 31 are used for the connector to be welded on the circuit board (not shown), etc., and the first and second elastic arms 22 and 32 extending from the other end are It provides elastic contact effect when the plug-in card (not shown) is inserted, so as to ensure the contact between the first and second contact portions 23, 33 and the plug-in card (not shown). In addition, the cross-sections a1 and a2 of the first and second terminals 2 and 3 are substantially equal in width, which can further reduce the loss problem during high-frequency signal transmission.

Please also refer to Fig. 7, the insulating body 1 mainly comprises two or more than two (ie multiple) terminal bases 10, 11; The first terminal base 10 and a second terminal base 11 mutually assemble the insulating body 1, wherein the first terminal base 10 has a first wall portion 100 extending transversely of the insulating body 1, and a plurality of walls corresponding to the second one. The first clamping portions 101 and 101' (101' shown in FIG. 8 ) are spaced and juxtaposed on the inner side of a wall portion 100 , and the second terminal base 11 also has a second wall portion 110 formed along the lateral direction of the insulating body 1 , and a plurality of second clamping portions 111, 111' (111' as shown in FIG. 8) corresponding to the multiple first clamping portions 101, 101', and the first and second wall portions 100, 110 are intervals Oppositely, the aforementioned card slot 12 for inserting a card (not shown) into the insulating body 1 is formed. At the same time, the contact portions 23, 33 of the terminals 2, 3 protrude from the card slot 12; in more detail, the first terminal base 10 is provided with a plurality of first terminal slots 102 on the first wall 100, The second terminal base 11 is also provided with a plurality of second terminal grooves 112 on the second wall portion 110, and the first and second elastic arms 22, 32 of the first and second terminals 2, 3 are accommodated in the first and second elastic arms 22, 32 respectively. , the two terminal grooves 102, 112, and the first contact portion 23 of the first terminal 2 is protruding from one side of the card slot 12, while the second contact portion 33 of the second terminal 3 is protruding from the other side of the card slot 12 On one side, so that the first and second contact parts 23, 33 can elastically clamp the plug-in card (not shown).

Therefore, the card edge connector of the present invention can be obtained through the above-mentioned structural composition.

Accordingly, as shown in FIG. 7 and FIG. 8, since the insulating body 1 is composed of a first terminal base 10 and a second terminal base 11, and the first and second terminal bases 10, 11 have multiple A first clip 101, 101' and a plurality of second clips 111, 111'. Therefore, each first terminal 2 can be distributed between the relative first and second clips 101, 111 (as shown in FIG. 7 ), and each second terminal 3 can also be distributed between the relative first and second clips. Parts 101', 111' (as shown in FIG. 8 ), so that the opposing first and second clamping parts 101, 111 (or 101', 111') are sandwiched between each first terminal 2 (or each first terminal 2 On the fixing portions 20, 30 of the two terminals 3), in other words, the fixing portions 20, 30 of the terminals 2, 3 are assembled between the first and second terminal bases 10, 11 for fixing. Therefore, the fixing portions 20 and 30 of the first and second terminals 2 and 3 can be formed in the same direction as the terminal itself without any bifurcated structure, and can maintain a good signal transmission effect of the terminal to meet the high frequency requirement.

It is worth mentioning that each of the first and second clamping parts 101, 111 (or 101', 111') can be a straight wall surface extending horizontally or vertically, or an inclined chamfered wall surface, etc., depending on the first , The forming direction of the fixing parts 20, 30 of the two terminals 2, 3 is arranged in cooperation.

In addition, as shown in Figure 9, the first and second terminals 2 and 3 do not all need to be clamped and fixed by the first and second terminal bases 10 and 11, and the first and second terminals can also be fixed according to actual needs and conditions. 2, 3 One of them is sandwiched and fixed by the first and second terminal blocks 10, 11, while the other can be formed by means such as injection molding (Insert-molding Type); and in this embodiment, Take the second terminal base 2 covering the second fixing portion 30 of the second terminal 3 as an example, and vice versa.

Therefore, the card edge connector (1) of the present invention can at least have the following effects:

1. The insulating body 1 clamps each terminal 2, 3 through a plurality of terminal bases 10, 11, so that each terminal 2, 3 does not need to form any bite structure that penetrates the insulating body 1, or is used to insert the insulating body 1 Fork structure, etc., thus can maintain good signal transmission effect of each terminal 2, 3.

2. As mentioned above, when the terminals 2 and 3 do not need to form the above-mentioned structure, the distance between the terminals 2 and 3 can be further reduced to apply to high-frequency signal occasions, and the assembly can still be easily or without increasing the assembly difficulties etc.

3. Each terminal 2, 3 is a blanking type, and the cross-section of each part is substantially equal in width, so the loss of each terminal 2, 3 during high-frequency signal transmission can be further reduced.

4. In the case that the card edge connector has multiple rows of terminals 2, 3, it can also be made by cooperating with conventional methods such as injection overmolding, so that the card edge connector can be assembled on the insulating body 1 and the terminals 2, 3 More flexibility without any throttling issues.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (16)

1. A card edge connector, characterized in that, comprising: An insulating body, including a first terminal seat and a second terminal seat, the first terminal seat has a first wall portion and a plurality of first clamping portions, and the second terminal seat also has a second wall portion and a plurality of first clamping portions. a plurality of second clamping parts, the first and second wall parts are opposite to each other at intervals to form a bayonet insertion slot; and A plurality of blanking type terminals are arranged in the insulating body, and each of the terminals includes a fixing part, a welding part extending from one end of the fixing part, an elastic arm extending from the other end of the fixing part, and a connecting At the contact portion at the end of the elastic arm, the contact portion protrudes from the card insertion slot, and each terminal is equal in cross-section at each part; Wherein, each of the first and second clamping portions of the first and second terminal bases is opposite to each other, and the plurality of terminals are distributed between the opposing first and second clamping portions, and each of the opposing first , The second clamping portion is clamped on the fixing portion of each terminal. 2 . The card edge connector according to claim 1 , wherein the insulating body is in the shape of a horizontal strip. 3 . 3 . The card edge connector according to claim 2 , wherein the card insertion opening is formed along a transverse direction of the insulating body. 4 . 4. The card edge connector according to claim 1, wherein the opposing first and second clamping portions are straight walls. 5. The card edge connector according to claim 4, wherein the straight wall is transverse. 6. The card edge connector according to claim 4, wherein the straight wall is straight. 7 . The card edge connector according to claim 1 , wherein each of the opposing first and second clamping portions is an oblique chamfer wall surface. 8. The card edge connector according to claim 1, wherein the first terminal seat is provided with a plurality of first terminal slots on the first wall, and the second terminal seat is provided on the second wall A plurality of second terminal slots are provided, and the elastic arms of the plurality of terminals are accommodated in the first and second terminal slots respectively. 9. A card edge connector, characterized in that it comprises: An insulating body with a bayonet slot; a plurality of first terminals, each of which includes a first fixing portion, a first welding portion extending from one end of the first fixing portion, a first elastic arm extending from the other end of the first fixing portion, and a first contact portion connected to the end of the first elastic arm, the first contact portion protrudes from one side of the card insertion slot; and A plurality of second terminals, each of which also includes a second fixing portion, a second welding portion extending from one end of the second fixing portion, and a second elastic arm extending from the other end of the second fixing portion , and a second contact portion connected to the end of the second elastic arm, the second contact portion protrudes from the other side of the card insertion slot; Wherein, the insulating body also includes a first terminal seat and a second terminal seat, and each of the first terminals is a blanking type, and the cross-section of each part is equal in width, and the first fixing part of each of the first terminals It is assembled between the first and second terminal bases, and the second fixing part of each second terminal is covered by the second terminal base. The first terminal base has a first wall part and a plurality of The first clamping portion, and the second terminal base also has a second wall portion and a plurality of second clamping portions, the first and second clamping portions of the first and second terminal bases are opposite to each other, and the plurality of second clamping portions are opposite to each other. Each first terminal is distributed between each of the opposite first and second clamping parts, and each of the opposite first and second clamping parts is clamped on the first fixing part of each of the first terminals. 10. The card edge connector according to claim 9, wherein the insulating body is in the shape of a horizontal strip. 11. The card edge connector according to claim 10, wherein the card insertion opening is formed along a transverse direction of the insulating body. 12 . The card edge connector according to claim 9 , wherein the first and second wall portions are opposite to each other at intervals to form the card insertion opening. 13 . 13. The card edge connector according to claim 9, wherein the opposing first and second clamping portions are straight walls. 14. The card edge connector according to claim 13, wherein the straight wall is transverse. 15. The card edge connector according to claim 13, wherein the straight wall is straight. 16 . The card edge connector according to claim 9 , wherein each of the opposing first and second clamping portions is an oblique chamfer wall surface. 17 .