TWI610494B - Card edge connector - Google Patents

Abstract

The present disclosure provides a card edge connector. The card edge connector includes a plurality of plate terminals. The flat terminals each include a resilient arm portion. The elastic arm portion includes a reverse folding section, an outer inclined arm section, an upper reverse folding section and an inner inclined arm section. The resilient arm portion is a two-armed configuration having a closed loop having an inner arm and an outer arm. The inner arm and the outer arm respectively have the lower reflexing section, the outer slanting arm section, the upper reflexing section and the inner slanting arm section corresponding to each other. The width of the upper reflexed section of the inner arm is greatest in each section of the inner arm and in each section of the outer arm. Since the upper reflexed section has the largest width, excessive deflection of the flat terminals can be prevented.

Description

Card edge connector

The present disclosure relates to a card edge connector, and more particularly to a card edge connector for assembling a card edge module.

Fig. 1 is a view showing the structure of a terminal 11 of a conventional card edge connector, which is disclosed in U.S. Patent No. 4,832,617, the entire disclosure of which is incorporated herein by reference. Referring to Figure 1, the terminal 11 is a terminal of a planar conductive member having an intermediate slot 10 to form substantially parallel and spaced planar shanks 12A and 12B that are remote from the base 14. The ends are joined together at a location 16. The planar rod portions 12A and 12B have a uniform and uniform width along the length (i.e., the width W0 of the planar rod portion 12A is the same as the width W0' of the planar rod portion 12B), and the intermediate slit 10 is located at two The width of the spacing between adjacent edges of the planar shanks 12A and 12B is substantially the same as the width of the planar shanks 12A and 12B. One of the planar shanks 12A and 12B is subjected to a tensile force, and the other of the planar shanks 12A and 12B is subjected to a compressive force. Since the widths of the substantially parallel planar rod portions 12A and 12B of the terminal 11 are the same, the stress applied to the planar rod portions 12A and 12B by the card 18 is relatively easy when the card 18 is inserted or withdrawn. Exceeding the stress that the planar rod portions 12A and 12B can withstand, thus causing permanent deformation of the terminal 11, particularly in the bending of the two planar rod portions 12A and 12B, the problem of such permanent deformation is more likely to occur. The tension and compression forces of the planar rod portions 12A and 12B are unequal. Of course, one way is to increase the width and thickness of the planar rod portions 12A and 12B to overcome the maximum plastic deformation therein, but Connectors and terminals are difficult to design and are smaller and more compact. 2 is a schematic structural view of a conventional card edge connector terminal 2A and 2B, which is disclosed in Chinese Patent Application No. 201480045224.2 (U.S. Patent Publication No. 2016/0181713; Application No. 103127051). Referring to FIG. 2, the terminal 2A includes a contact portion 20A, and the terminal 2B includes a contact portion 20B. The contact portions 20A and 20B are formed as a ring and include back frames 22A and 22B that help support the contact portions 20A and 20B. However, similarly, since the contact portion 20A of the terminal 2A and the contact portion 20B of the terminal 2B have the same width, the card is applied to the contact portion of the terminal 2A when a card (not shown) is inserted or withdrawn. The stress of the contact portion 20B of the 20A and the terminal 2B relatively easily exceeds the stress that the contact portion 20A of the terminal 2A and the contact portion 20B of the terminal 2B can withstand, thereby causing permanent deformation of the terminals 2A and 2B, particularly at the terminals 2A and 2B. The problem of permanent deformation is more likely to occur at the bend. The above description of the "prior art" is merely an indication of the prior art and does not constitute a prior art description of the disclosure, and does not constitute a prior art of the disclosure, and any description of the "previous technique" above. Neither should be part of this case.

Embodiments of the present disclosure provide a card edge connector. The card edge connector includes an insulating base and a plurality of flat terminals. The insulating base has an elongated shape extending along a longitudinal direction and has a top surface and a bottom surface defining an up-and-down direction; and a card edge slot along the longitudinal direction on the top surface Separating the insulating body into a first wall body and a second wall body; the first wall body and the second wall body face a direction defining a transverse direction; the first wall body and the second wall The direction of the wall facing the card edge slot is an opposite inner side, and the direction opposite to the card edge slot is an opposite outer side; the first wall body and the second wall body each have a side by side and a lateral direction along the longitudinal direction Set a plurality of terminal slots. Each of the flat-plate terminals is mounted in each of the terminal slots, and the extending direction of the plate surface of each of the flat-plate terminals is parallel to the lateral direction, and each of the flat-plate terminals includes a base portion, a contact portion, and an elastic arm portion. The base portion is below the flat terminal. The contact portion is above the flat terminal and extends into the card edge slot. The elastic arm portion is located between the base portion and the contact portion, and the elastic arm portion sequentially includes a lower reflexing section, an outer oblique arm section, an upper reflexing section, and an inner inclined arm section. The lower folding portion is connected to the base portion and extends from the base portion in a direction toward the opposite inner side and in a direction opposite to the opposite outer side and in an obliquely upward direction. The outer inclined arm section extends in the opposite outer direction and the obliquely upward direction. The upper reflexing section extends in a direction opposite to the opposite inner side and in a downward direction. The inner inclined arm section extends in a direction toward the opposite inner side and a direction obliquely downward. The elastic arm portion is a double-armed structure having a closed loop having an inner arm and an outer arm disposed along the overall contour of each flat terminal and having different contours, the inner arm and the outer arm The outer arms respectively have the lower reflexing section, the outer slanting arm section, the upper reflexing section and the inner slanting arm section corresponding to each other. The outer oblique arm segment of the outer arm and the outer oblique arm segment of the inner arm are separated by a first spacing, and the upper reflexing section of the outer arm and the upper reflexing section of the inner arm are separated by a second spacing, and The inner inclined wall section of the outer arm and the inner inclined wall section of the inner arm are separated by a third distance. One thickness refers to the plate thickness of each flat terminal, and a width refers to the width of each portion of each flat terminal in the direction of the plate surface. The width of the upper reflexed section of the inner arm is maximum among the sections of the inner arm and the sections of the outer arm; and the width of the upper reflexed section of the inner arm is greater than the upper reflex of the outer arm The width of the segment; and the width of the upper reflexed section of the inner arm is greater than the width of the upper reflexed section of the outer arm. The width of the lower reflexed section of the inner arm is minimal in each section of the inner arm; and the width of the lower reflexed section of the outer arm is minimal in each section of the outer arm. The width of the lower folded portion of the inner arm is greater than or equal to the width of the lower folded portion of the outer arm, and the width of the outer inclined arm portion of the inner arm is greater than or equal to the width of the outer inclined arm portion of the outer arm The width of the inner inclined arm section of the inner arm is greater than or equal to the width of the inner inclined arm section of the outer arm. The second pitch is greater than the first pitch and the third pitch. In an embodiment of the disclosure, the second pitch is greater than the first pitch, and the first pitch is greater than the third pitch. In an embodiment of the present disclosure, the width of the lower reflexed section of the inner arm is the same as the width of the lower reflexed section of the outer arm. In an embodiment of the present disclosure, the ratio of the width of the inner arm and the outer arm to the thickness ranges from 1.3 to 2.3. In the embodiment of the present disclosure, the contact portion has a contact edge and a guiding edge, and the guiding edge is located above the contact edge. The flat terminal further includes a first row of flat terminals and a second row of flat terminals, wherein the flat terminals of the first row are respectively mounted in the terminal slots of the first wall, and each of the second columns The flat terminals are respectively installed in the respective terminal slots of the second wall body. The height of the contact portion of each of the flat terminals of the first row is lower than the height of the contact portion of each of the flat terminals of the second row. The angle between the leading edge of each of the flat terminals of the first row and the acute angle of the vertical direction is greater than the angle between the leading edge of each of the flat terminals of the second row and the acute angle of the vertical direction. The width of the upper reflexed section of the inner arm of each of the flat terminals of the first row is greater than the width of the upper reflexed section of the inner arm of each of the flat terminals of the second row. In an embodiment of the present disclosure, a width of the inner inclined arm section of the inner arm of each of the flat terminals of the second row is greater than a width of the inner inclined arm section of the inner arm of each flat terminal of the first row. The width of the inner inclined arm section of the outer arm of each flat terminal of the first row is equal to the width of the upper reflexed section of the outer arm of each flat terminal of the first row, and the flat terminal of the second column The width of the inner inclined arm section of the outer arm is equal to the width of the upper reflexing section of the outer arm of each flat terminal of the second row, and the inner oblique of the outer arm of each flat terminal of the first row The width of the arm section is greater than the width of the inner bevel arm section of the outer arm of each of the flat terminals of the second row. The width of the outer oblique arm section of the inner arm of each flat terminal of the first row is greater than or equal to the width of the outer oblique arm section of the inner arm of each flat terminal of the second row. The width of the lower reflexed section of the outer arm of each flat terminal of the first row, the width of the lower reflexed section of the inner arm of each flat terminal of the first row, and the flat panel terminals of the second column The width of the lower reflexed section of the outer arm, the width of the lower reflexed section of the inner arm of each of the flat terminals of the second row, and the outer oblique of the outer arm of each of the flat terminals of the first row The width of the arm segment, the width of the outer bevel arm segment of the outer arm of each of the flat terminals of the second row, and the width of the outer bevel arm segment of the inner arm of each of the flat plate terminals of the second row are equal to each other. In an embodiment of the present disclosure, in each of the flat terminals of the first row: a width of the upper reflexed section of the inner arm is greater than a width of the upper reflexed section of the outer arm, and the inner oblique of the inner arm The width of the arm segment is the same as the width of the inner oblique arm segment of the outer arm, the width of the outer oblique arm segment of the inner arm is greater than or equal to the width of the outer oblique arm segment of the outer arm, and the lower portion of the inner arm The width of the folding section is equal to the width of the lower folding section of the outer arm; the width of the upper folding section of the inner arm is larger than the width of the inner inclined arm section of the inner arm, and the inner inclined arm of the inner arm The width of the segment is greater than or equal to the width of the outer oblique arm segment of the inner arm, the width of the outer oblique arm segment of the inner arm is greater than or equal to the width of the lower reflexing segment of the inner arm; The width of the folded section is the same as the width of the inner inclined arm section of the outer arm, the width of the inner inclined arm section of the outer arm is greater than the width of the outer inclined arm section of the outer arm, and the outer inclined arm of the outer arm The width of the segment is the same as the width of the lower reflexed section of the outer arm; and the ratio of the width of the inner arm and the outer arm to the thickness ranges from 1.3 to 2.3. In each of the flat terminals of the second row: a width of the upper reflexed section of the inner arm is greater than a width of the upper reflexed section of the outer arm, and a width of the inner inclined arm section of the inner arm is greater than the outer arm The width of the inner inclined arm section, the width of the outer inclined arm section of the inner arm is equal to the width of the outer inclined arm section of the outer arm, and the width of the lower inverted section of the inner arm is equal to the outer arm The width of the lower reflexed section; the width of the upper reflexed section of the inner arm is the same as the width of the inner inclined arm section of the inner arm, and the width of the inner inclined arm section of the inner arm is greater than the outer oblique of the inner arm The width of the arm segment, the width of the outer oblique arm segment of the inner arm is equal to the width of the lower reflexing segment of the inner arm; the width of the upper reflexing segment of the outer arm is the same as the inner oblique arm of the outer arm The width of the segment, the width of the inner oblique arm segment of the outer arm is the same as the width of the outer oblique arm segment of the outer arm, the outer oblique arm segment of the outer arm has the same width as the lower reflex of the outer arm The width of the segment; and the ratio of the width of the outer arm to the thickness is in the range of 1.3-2.0. In an embodiment of the present disclosure, each of the flat terminals further includes a holding portion configured to interfere with the insulating base. In an embodiment of the present disclosure, the holding portion is integrally formed with the flat terminals. In an embodiment of the present disclosure, the card edge connector further includes a plurality of support blocks. Each of the support blocks is located between the base portion and the retaining portion, wherein each of the terminal slots further includes a support block receiving groove, and the support block receiving grooves communicate with each other, and the support blocks are received by the support blocks that communicate with each other. The grooves are arranged side by side in the longitudinal direction. In the embodiment of the present disclosure, the holding portion further includes an interference protrusion, and wherein each of the support block receiving grooves further includes a shallow groove, and the interference protrusion is interference-fixed with the shallow groove. In an embodiment of the present disclosure, each of the terminals further includes a tail portion, and the insulating base further includes a plurality of terminal tail fixing slots configured to position and receive the tail portions of the flat terminal. In an embodiment of the present disclosure, an upper end of the inner side of the first wall body has a diagonal insertion guide surface facing the card edge slot. In an embodiment of the present disclosure, the flat terminals each have a double-armed configuration with a closed loop. The dual-arm structure has the inner arm and the outer arm that are disposed along the entire outline of each of the flat terminals. The inner arm and the outer arm of each flat terminal have different profiles, and the inner arm and the outer arm of the outer arm may have arm segments of different widths (the lower reflex section, the outer oblique arm section, The upper reflex section and the inner oblique arm section have different widths. Moreover, in some corresponding arm segments, the width of one arm segment of the inner arm is greater than the width of a corresponding arm segment of the outer arm, and in some arm segments, the outer arm has a relatively large spacing from the inner arm. , for example, the second pitch. Accordingly, the double-armed configuration of the closed loops of the flat terminals can control the deflection behavior of the flat terminals and prevent excessive deflection of the flat terminals to avoid permanent of the flat terminals. Deformation. In contrast, in some conventional terminals, since the widths of the substantially parallel two planar rod portions of the terminal are the same, the stress applied to the two planar rod portions is relatively easy when the card is inserted or pulled away. Exceeding the stress that the two flat rods can withstand, thus causing permanent deformation of the terminal, especially in the bending of the two flat rod portions, the problem of such permanent deformation is more likely to occur. The technical features and advantages of the present disclosure are summarized broadly, and the detailed description of the present disclosure will be better understood. Other technical features and advantages of the subject matter of the claims of the present disclosure will be described below. It will be appreciated by those of ordinary skill in the art that the present invention may be practiced otherwise. It is to be understood by those of ordinary skill in the art that this invention is not limited to the spirit and scope of the disclosure as defined by the appended claims.

The following disclosure provides many different embodiments or examples for implementing different features of the present application. The specific examples of components and configurations are described below to simplify the disclosure of the present application. Of course, these are merely examples and are not intended to limit the application. For example, the following description describes an embodiment in which forming a first feature on or over a second feature can include forming first and second features of direct contact, and can also include embodiments for forming other features between the first and second features Thus, the first and second features are not in direct contact. Furthermore, the application may repeat the component symbols and/or letters in different examples. This repetition is for the purpose of simplicity and clarity, and is not intended to govern the relationship between the various embodiments and/or the structures discussed. Furthermore, this application may use spatially equivalent words, such as "lower", "lower", "lower", "higher", "higher" and the like, to describe one of the patterns. The relationship of an element or feature to another element or feature. Spatially corresponding words are used to encompass different orientations of the device in use or operation in addition to the orientations depicted in the drawings. The device may be positioned (rotated 90 degrees or other orientations) and the spatially corresponding description used in this application may be interpreted accordingly. It will be appreciated that when a feature is formed over another feature or substrate, other features may be present therebetween. 3 is a top perspective view of the card edge connector 3 of the embodiment of the present disclosure. The card edge connector 3 is mounted on a carrier 5 and receives a card edge module 4. Referring to FIG. 3, although FIG. 3 illustrates the pattern of the two card edge modules 4, it is not illustrated that the two card edge modules 4 are inserted into the card edge connector 3 at a time. Further, the pattern of the two card edge modules 4 is merely for explaining that the card edge module 4 can be inserted into the card edge connector 3 at a position between the position 4' and the position 4'' and held in the insertion direction. In some embodiments, carrier 5 includes a printed circuit board (PCB). 4 is a bottom perspective view of the card edge connector 3 of FIG. 3. FIG. 5 is a top perspective exploded perspective view of the card edge connector 3 of FIG. 4. FIG. 6 is an exploded bottom perspective view of the card edge connector 3 of FIG. 4. Referring to FIGS. 4-6, the card edge connector 3 includes an insulating base 7, a plurality of flat terminals 9, and two auxiliary fixing members 6. Referring back to FIG. 3, the flat terminals 9 are mounted in the insulating base 7 and fixed to the carrier 5, and the two auxiliary fixing members 6 assist the insulating base 7 to be fixed to the carrier 5. The insulating base 7 has an elongated shape extending in a longitudinal direction and has a top surface 70 and a bottom surface 72 defining an up and down direction. The insulating base 7 has a card edge slot 74 along the longitudinal direction on the top surface 70, and is configured to receive the card edge module 4 with reference to FIG. 7 is a cross-sectional perspective view of the card edge connector 3 of FIG. 5 taken along section line AA, in which only a perspective cross section of the insulating base 7 is illustrated, and a pair of flat terminals 9 separate the terminal slots 78 of the insulating base 7. . FIG. 8 is a schematic cross-sectional perspective view showing the assembled panel terminal 9 of the card edge connector 3 of FIG. 7. Figure 9 is a schematic cross-sectional plan view of the card edge connector 3 of Figure 8 taken along a cross-sectional view. Referring to FIGS. 7-9, the card edge slot 74 divides the insulating base 7 into a first wall 74A and a second wall 74B. The direction in which the first wall 74A and the second wall 74B face defines a lateral direction. The insulating base 7 has a plurality of terminal slots 78, and each of the first wall 74A and the second wall 74B has the terminal slots 78 arranged side by side in the longitudinal direction and laterally. The flat terminals 9 include a first row of flat terminals 1 and a second row of flat terminals 2. The respective flat terminals 1 of the first row are respectively mounted in the respective terminal slots 78 of the first wall 74A, and the flat terminals 2 of the second row are respectively mounted in the respective terminal slots 78 of the second wall 74B. The extending direction of the plate surface of each of the flat terminals 9 is parallel to the lateral direction. In an embodiment, each of the plate terminals 1 of the first row has a different profile from each of the plate terminals 2 of the second column. In another embodiment, each of the flat terminal 1 of the first row and each of the flat terminals 2 of the second row may have the same contour. Further, the first wall body 74A and the second wall body 74B are opposed to each other in the direction of the card edge slot 74 in the opposite inner direction R1, and the direction opposite to the card edge slot 74 is the opposite outer direction R2. Further, an upper end of an inner side 93 of the first wall body 74A of the insulating base 7 has a diagonal insertion guiding surface 77 facing the card edge slot 74. The oblique insertion guide surface 77 is configured to guide the card edge module 4 when the card edge module 4 is obliquely inserted into the card edge slot 74. Hereinafter, referring to FIGS. 9 and 10, the common structural features of the flat terminals 9 will be first described. Hereinafter, the flat terminals 1 of the first row are taken as an example, but the same applies to the flat terminals 2 of the second row. FIG. 10 is a top perspective view of the flat terminal 9 of the card edge connector 3 of FIG. 4. Each of the flat terminals 9 includes a base portion 30, a contact portion 40, a resilient arm portion 50, and a tail portion 60. The base 30 is located below the flat terminal 9. The contact portion 40 is positioned above the flat terminal 9 and extends into the card edge slot 74 in the inboard direction R1 with reference to FIGS. 7 to 9. The elastic arm portion 50 is located between the base portion 30 and the contact portion 40. The contact portion 40 has a contact edge 42 and a guiding edge 44. The leading edge 44 is located above the contact edge 42 and is configured to guide the card edge module 4 when the card edge module 4 is inserted into the card edge slot 74. In some embodiments, the tail portion 60 includes a surface welded tail portion and the plate terminal 9 is secured to the carrier plate 5 by soldering the surface welded tail portion to the carrier plate 5. The elastic arm portion 50 sequentially includes a reverse folding section, an outer inclined arm section, an upper reflexing section, and an inner inclined arm section. One end of the lower inversion section connecting the inner side direction R1 of the base portion 30 extends from the base portion 30 toward the inner side direction R1 and extends in the opposite direction to the outer direction R2 and the obliquely upward direction. The outer inclined arm section extends in the outer direction R2 and the obliquely upward direction. The reverse bending of the upper folding section extends in the direction of the opposite inner side direction R1 and in the obliquely downward direction. The inner inclined arm section extends in the direction of the opposite inner side direction R1 and in the obliquely downward direction. Further, the resilient arm portion 50 is a two-armed configuration having a closed loop. The dual-arm configuration has an inner arm and an outer arm that are disposed along the overall contour of each of the flat terminals 9 and have different contours. The inner arm and the outer arm respectively have a lower reflex section, an outer slant arm section, an upper reflex section, and an inner slant arm section corresponding to each other, which will be described in detail below. In the following, a thickness T, a width W, and a height L of the flat terminal 9 will be discussed. The thickness T refers to the plate thickness of the flat terminal 9, that is, the thickness and width W of the flat terminal 9 in the longitudinal direction refer to the width of each portion of the flat terminal 9 in the direction of the plate surface, and the height L refers to the flat plate. The distance between the upper end of the upper reflexed section 56 of the terminal 9 and the lower end of the base 30 in the up and down direction, that is, the total height of the flat terminal 9. In the present embodiment, the flat terminal 9 is formed by branking stamping of the sheet material, so the base portion 30, the lower reflexing section, the outer oblique arm section, and the upper reflexing section of the flat terminal 9 are The inner inclined arm section and the contact portion 40 all have the same thickness T and are located on the same board surface. Referring to Figures 9 and 10, the common structural features of the respective arm segments of the first row of the plate terminals 1 and the second row of the plate terminals 2 over the width W will be described below. As described above, the flat panel terminals 1 of the first row are exemplified below, and for convenience of discussion, the internal structures of the panel terminals 1 of the first row are marked as follows: the outer arm is labeled A1 and the inner arm is labeled B1. The lower reflex section of the outer arm A1 is marked as 52A, the outer oblique arm section is labeled 54A, the upper reflexed section is marked as 56A, the inner oblique arm section is marked as 58A, and the lower reflexed section of the inner arm B1 is marked as 52B. The outer oblique arm segment is labeled 54B, the upper reflexed segment is labeled 56B, and the inner oblique arm segment is labeled 58B. The common structural features can be expressed as: (1) the width W of the upper reflexed section 56B of the inner arm B1 is the largest among the segments of the inner arm B1 and the outer arms A1; and the upper reflexed section 56B of the inner arm B1 The width W is greater than the width W of the upper reflexed section 56A of the outer arm A1. (2) The width W of the lower reflexed section 52B of the inner arm B1 is the smallest among the sections of the inner arm B1; and the width W of the lower reflexed section 52A of the outer arm A1 is the smallest among the sections of the outer arm A1. (3) The width W of the lower reflexed section 52B of the inner arm B1 is greater than or equal to the width W of the lower reflexed section 52A of the outer arm A1; in one embodiment, the width W of the lower reflexed section 52B of the inner arm B1 is equal to The width W of the lower reflexed section 52A of the outer arm A1. (4) The width W of the outer oblique arm segment 54B of the inner arm B1 is greater than or equal to the width W of the outer oblique arm segment 54A of the outer arm A1, and the width W of the inner oblique arm segment 58B of the inner arm B1 is greater than or equal to the outer arm A1. The width W of the inner oblique arm section 58A. (5) The outer inclined arm section 54A of the outer arm A1 is separated from the outer inclined arm section 54B of the inner arm B1 by a first interval S11, and the upper reversed section 56A of the outer arm A1 is separated from the upper inverted section 56B of the inner arm B1 by one The second spacing S12, the inner inclined wall section 58A of the outer arm A1 and the inner inclined wall section 58B of the inner arm B1 are separated by a third interval S13. The second spacing S12 is greater than the first spacing S11 and the third spacing S13. In one embodiment, the second pitch S12 is greater than the first pitch S11, and the first pitch S11 is greater than the third pitch S13; accordingly, it is possible to prevent the outer arm A1 and the inner arm B1 from interfering when the flat terminal 9 is elastically deformed. (6) The ratio of the width W to the thickness T of the inner arm B1 is 1.3-2.3, and the ratio of the width W to the thickness T of the outer arm A1 is 1.3-2.3. As described above, in the present disclosure, the flat terminal 9 has a double-armed structure in which a loop is closed, and the double-armed structure has an inner arm B1 and an outer arm A1 which are disposed along the entire outline of the flat terminal 9. The inner arm B1 and the outer arm A1 of the flat terminal 9 have different profiles, and the inner arms B1 and the outer arms A1 may have arm segments of different widths on the same arm. Furthermore, in some corresponding arm segments, the width W of one arm segment of the inner arm is greater than the width W of a corresponding arm segment of the outer arm, and in some arm segments, the outer arm has a relatively large spacing from the inner arm, for example The second interval S12. According to this, the behavior of the deflection of the flat terminal 9 can be controlled, and excessive deflection of the flat terminal 9 can be prevented to prevent permanent deformation of the flat terminal 9. In an embodiment, the flat terminals 1 of the first row have different profiles from the flat terminals 2 of the second row. For convenience of discussion, referring back to FIG. 10 and FIG. 11, the internal structure of the flat terminal 2 of the second row is marked as follows: the outer arm is labeled A2 and the inner arm is labeled B2; the lower reflexed section of the outer arm A2 is labeled 53A. The outer oblique arm section is marked as 55A, the upper reversed section is marked as 57A, and the inner inclined arm section is marked as 59A; and the inner reversed section of the inner arm B2 is marked as 53B, and the outer inclined arm section is marked as 55B, and the outer inclined arm section is marked as 55B. The segment is labeled 57B and the inner oblique segment is labeled 59B. Referring to Fig. 9, the relationship between the width W of each arm segment of each of the flat-plate terminals 1 of the first row and the width W of each arm segment of each of the flat-plate terminals 2 of the second row can be expressed as follows: (1) First The width W of the upper reflexed section 56B of the inner arm B1 of each of the flat-plate terminals 1 of the column is larger than the width W of the upper reflexed section 57B of the inner arm B2 of each of the flat-plate terminals 2 of the second row. (2) The width W of the inner inclined arm section 59B of the inner arm B2 of each flat terminal 2 of the second row is larger than the width W of the inner inclined arm section 58B of the inner arm B1 of each flat terminal 1 of the first row. (3) The width W of the inner inclined arm section 58A of the outer arm A1 of each flat terminal 1 of the first row is equal to the width W of the upper reflexed section 56A of the outer arm A1 of each flat terminal 1 of the first row, the second column The width W of the inner inclined arm section 59A of the outer arm A2 of each of the flat-plate terminals 2 is equal to the width W of the upper reflexed section 57A of the outer arm A2 of each flat-plate terminal 2 of the second row, and the respective flat-plate terminals 1 of the first column The width W of the inner inclined arm section 58A of the outer arm A1 and the upper reversed section 56A of the outer arm A1 is larger than the upper reflexing section 59A of the outer arm A2 of the flat row terminal 2 of the second row and the upper reflexing arm A2 The width W of the segment 57A. (4) The width W of the outer oblique arm section 54B of the inner arm B1 of each of the flat terminal 1 of the first row is greater than or equal to the width W of the outer oblique arm section 55B of the inner arm B2 of each flat terminal 2 of the second row. (5) The width W of the lower reflexed section 56A of the outer arm A1 of each of the flat-plate terminals 1 of the first row, the width W of the lower reflexed section 52B of the inner arm B1 of each of the flat-plate terminals 1 of the first row, and the second column The width W of the lower reflexed section 53A of the outer arm A2 of each of the flat-plate terminals 2, the width W of the lower reflexed section 53B of the inner arm B2 of each of the flat-plate terminals 2 of the second row, and the flat-plate terminals 1 of the first row The width W of the outer oblique arm section 54A of the outer arm A1, the width W of the outer oblique arm section 55A of the outer arm A2 of each flat terminal 2 of the second row, and the outer oblique of the inner arm B2 of each flat terminal 2 of the second row The width W of the arm segments 55B is equal to each other. (6) The height of the contact portion 40 of each of the flat terminal 1 of the first row is lower than the height of the contact portion 40 of each of the flat terminals 2 of the second row. (7) the angle between the leading edge 44 of each of the flat terminals 1 of the first row and the acute angle in the up and down direction is larger than the angle between the leading edge 44 of each of the flat terminals 2 of the second row and the acute angle in the up and down direction, in other words, The leading edges 44 of the respective flat terminals 2 of the second row are steeper inward and downward than the leading edges 44 of the respective flat terminals 2 of the second row. The outline relationship of each of the flat terminal 1 of the first row and the flat terminal 2 of the second row will be separately described below. In each of the flat-plate terminals 1 of the first row: (1) The ratio of the width W to the thickness T of each of the inner arm B1 and the outer arm A1 is in the range of 1.3 to 2.3. In some embodiments, the endpoint value of the range of ratios is not limited to 1.3 and can be any value between 1.3 and 2.3. In some embodiments, the other endpoint value of the range of ratios is not limited to 2.3 and can be any value between 1.3 and 2.3. (2) The width W of the upper reflexed section 56B of the inner arm B1 is larger than the width W of the upper reflexed section 56A of the outer arm A1, and the width W of the inner inclined arm section 58B of the inner arm B1 is the same as the inner oblique arm of the outer arm A1. The width W of the segment 58A, the width W of the outer oblique arm segment 54B of the inner arm B1 is greater than or equal to the width W of the outer oblique arm segment 54A of the outer arm A1, and the width W of the lower reflexing segment 52B of the inner arm B1 is equal to the outer arm. The width W of the lower reflexed section 52A of A1. (3) The width W of the upper reversed section 56B of the inner arm B1 is greater than the width W of the inner inclined arm section 58B of the inner arm B1, and the width W of the inner inclined arm section 58B of the inner arm B1 is greater than or equal to the outer oblique of the inner arm B1. The width W of the arm segment 54B and the width W of the outer oblique arm segment 54B of the inner arm B1 are greater than or equal to the width W of the lower reflexed section 52B of the inner arm B1. (4) The width W of the upper reflexed section 56A of the outer arm A1 is the same as the width W of the inner inclined arm section 58A of the outer arm A1, and the width W of the inner oblique arm section 58A of the outer arm A1 is larger than the outer oblique arm of the outer arm A1. The width W of the segment 54A, the width W of the outer oblique arm segment 54A of the outer arm A1 is the same as the width W of the lower reflexed segment 52A of the outer arm A1. (5) The outer inclined arm section 54A of the outer arm A1 is spaced apart from the outer inclined arm section 54B of the inner arm B1 by a first interval S11, and the upper reversed section 56A of the outer arm A1 is separated from the upper inverted section 56B of the inner arm B1 by one. The second spacing S12, the inner inclined wall section 58A of the outer arm A1 and the inner inclined wall section 58B of the inner arm B1 are separated by a third interval S13. The second pitch S12 is greater than the first pitch S11, and the first pitch S11 is greater than the third pitch S13. In each of the flat-plate terminals 2 of the second row: (1) The ratio of the width W to the thickness T of each of the inner arm B2 and the outer arm A2 is in the range of 1.3 to 2.0. In some embodiments, the endpoint value of the range of ratios is not limited to 1.3 and can be any value between 1.3 and 2.0. In some embodiments, the other endpoint value of the range of ratios is not limited to 2.0 and can be any value between 1.3 and 2.0. (2) The width W of the upper reflexed section 57B of the inner arm B2 is larger than the width W of the upper reflexed section 57A of the outer arm A2, and the width W of the inner inclined arm section 59B of the inner arm B2 is larger than the inner oblique arm section of the outer arm A2 The width W of 59A, the width W of the outer oblique arm section 55B of the inner arm B2 is equal to the width W of the outer oblique arm section 55A of the outer arm A2, and the width W of the lower inverted section 53B of the inner arm B2 is equal to the lower side of the outer arm A2. The width W of the segment 53A. (3) The width W of the upper reflexed section 57B of the inner arm B2 is the same as the width W of the inner inclined arm section 59B of the inner arm B2, and the width W of the inner inclined arm section 59B of the inner arm B2 is larger than the outer oblique arm of the inner arm B2. The width W of the segment 55B, the width W of the outer oblique arm segment 55B of the inner arm B2 is equal to the width W of the lower reflexed segment 53B of the inner arm B2. (4) The width W of the upper folded portion 57A of the outer arm A2 is the same as the width W of the inner inclined arm portion 59A of the outer arm A2, and the width W of the inner inclined arm portion 59A of the outer arm A2 is the same as the outer oblique of the outer arm A2. The width W of the arm segment 55A, the width W of the outer oblique arm segment 55A of the outer arm A2 is the same as the width W of the lower reflexing segment 53A of the outer arm A2. (5) The outer inclined arm section 55A of the outer arm A2 is separated from the outer oblique arm section 55B of the inner arm B2 by a first interval S21, and the upper reversed section 57A of the outer arm A2 is separated from the upper reversed section 57B of the inner arm B2 by one. The second spacing S22, the inner inclined wall section 59A of the outer arm A2 and the inner inclined wall section 59B of the inner arm B2 are separated by a third interval S23. The second pitch S22 is greater than the first pitch S21, and the first pitch S21 is greater than the third pitch S23. Referring to FIG. 11, each of the flat terminals 9 of the card edge connector 3 further includes a holding portion 90 extending upward from the base portion 30, and is configured to interfere with the insulating base member 7. The retaining portion 90 further includes an interference bump 92. Each of the flat terminals 9 further includes a support block 80 , and each support block 80 is located between the base portion 30 of the flat terminal 9 and the holding portion 90 . The support block 80 holds the retaining portion 90 on the base 30 in an injection molded manner. Referring to FIG. 6 and FIG. 7 , each of the terminal slots 78 further includes a support block receiving groove 780 . Each of the support block receiving grooves 780 has a shallow groove 79 . The support block receiving grooves 780 are arranged side by side in the longitudinal direction and communicate with each other. Each of the flat terminals 9 is inserted into each of the terminal slots 78 from bottom to top. The support blocks 80 of the flat terminals 9 are respectively received in the support block receiving grooves 780, and the interference bumps 92 on the holding portions 90 of the flat terminals 9 are respectively Interference with each shallow groove 79 is fixed. The support blocks 80 are arranged side by side in the longitudinal direction in the support block receiving grooves 780 that communicate with each other. Since the material of the support block 80 is an electrically insulating material, even if the support block receiving grooves 780 are in communication with each other such that the support blocks 80 are in contact with each other, the card edge connector 3 is not adversely affected. However, in the present embodiment, the retaining portion 90 is separated from the base portion 30 of the flat terminal 9. The present disclosure is not limited thereto. In some embodiments, the card edge connector 3 does not include the support block 80 and the support block receiving slot. 780, the holding portion 90 is integrally formed with the base portion 30 of the flat terminal 9. In addition, referring to FIG. 3 and FIG. 7, the insulating base 7 further includes a plurality of terminal tail fixing grooves 76. The terminal tail securing slots 76 are configured to position and receive the tail portions 60 of the flat terminal terminals 9. Moreover, referring to FIG. 3, the card edge module 4 includes a plurality of conductive pads 41. After the card edge module 4 is inserted into the card edge slot 74, the conductive pads 41 are electrically connected to the contact portion 40 of the tablet terminal 9. The foregoing is a summary of the features of the embodiments, and those skilled in the art can understand the various aspects of the disclosure. Those skilled in the art will appreciate that the disclosure of the present application can be readily utilized as a basis for designing or modifying other processes and structures to achieve the same objectives and/or the same advantages as the embodiments described herein. It should be understood by those skilled in the art that the present invention is not limited to the spirit and scope of the present disclosure, and that various changes, substitutions and substitutions can be made by those skilled in the art without departing from the spirit of the disclosure. range.

11‧‧‧ Terminal
10‧‧‧Intermediate grooving
12A‧‧‧Flat pole
12B‧‧‧Flat pole
14‧‧‧ base
16‧‧‧ parts
W0'‧‧‧Width
W0 ‧‧‧Width
2A‧‧‧ terminals
2B‧‧‧ terminals
20A‧‧‧Contacts
20B‧‧‧Contacts
22A‧‧‧back frame
22B‧‧‧ Back frame
5‧‧‧ Carrier Board
4‧‧‧ card edge module
3‧‧‧ card edge connector
4'‧‧‧Location
4''‧‧‧Location
7‧‧‧Insulated body
9‧‧‧Slab terminal
6‧‧‧Auxiliary fixtures
70‧‧‧ top surface
72‧‧‧ bottom
78‧‧‧Terminal slot
74A‧‧‧First wall
74B‧‧‧Second wall
R1‧‧‧Inside direction
R2‧‧‧ outside direction
80‧‧‧Support block
90‧‧‧ Holding Department
30‧‧‧ base
40‧‧‧Contacts
50‧‧‧Flexible arm
60‧‧‧ tail
42‧‧‧Contact edge
44‧‧‧ Leading edge
S11‧‧‧ first spacing
S12‧‧‧Second spacing
S13‧‧‧ third spacing
S21‧‧‧ first spacing
S22‧‧‧Second spacing
S23‧‧‧ third spacing
T‧‧‧ thickness
W‧‧‧Width
L‧‧‧ Height
77‧‧‧ oblique insertion guide surface
1‧‧‧first row of flat-panel terminals
2‧‧‧Slab terminal of the second column
A1‧‧‧External arm
B1‧‧‧ internal arm
52A‧‧‧ lower folding section
54A‧‧‧External oblique arm section
56A‧‧‧Upper folding section
58A‧‧‧Intra-angled arm section
52B‧‧‧Under the reverse section
54B‧‧‧Outer oblique arm section
56B‧‧‧Upper folding section
58B‧‧‧Inner inclined arm section
A2‧‧‧External arm
B2‧‧‧ internal arm
53A‧‧‧Unfolding section
55A‧‧‧Outer oblique arm section
57A‧‧‧Upturned section
59A‧‧‧Intra-angled arm section
53B‧‧‧Unfolding section
55B‧‧‧External oblique arm section
57B‧‧‧Upper folding section
59B‧‧‧Intra-angled arm section
92‧‧‧Interference bumps
79‧‧‧ shallow trough
80‧‧‧Support block
780‧‧‧Support block storage slot
76‧‧‧Terminal tail fixing groove
41‧‧‧Electrical mat
R1‧‧‧Inside direction
R2‧‧‧ outside direction

The aspects of the disclosure of the present application are best understood from the following detailed description and the accompanying drawings. Note that various features are not drawn to scale in accordance with standard implementations of the industry. In fact, the dimensions of the various features may be arbitrarily increased or decreased for clarity of discussion. FIG. 1 is a schematic structural view of a terminal of a conventional card edge connector. 2 is a schematic structural view of a terminal of a conventional card edge connector. 3 is a top perspective view of the card edge connector of the embodiment of the present disclosure. 4 is a bottom perspective view of the card edge connector of FIG. 3. FIG. 5 is a top exploded view of the card edge connector of FIG. 4. FIG. 6 is a bottom perspective exploded view of the card edge connector of FIG. 4. Figure 7 is a cross-sectional perspective view of the card edge connector of Figure 5 taken along section line A-A. FIG. 8 is a schematic cross-sectional perspective view showing the assembled flat terminal of the card edge connector of FIG. 7. FIG. Figure 9 is a plan view showing the card edge connector of Figure 8 in a cross-sectional view. 10 is a top perspective view of the flat terminal of the card edge connector of FIG. 4. 11 is a top perspective exploded perspective view of the flat terminal of the card edge connector of FIG. 4.

T‧‧‧ thickness

W‧‧‧Width

L‧‧‧ Height

1‧‧‧Slab terminal

30‧‧‧ base

40‧‧‧Contacts

42‧‧‧Contact edge

44‧‧‧ Leading edge

50‧‧‧Flexible arm

76‧‧‧Terminal tail fixing groove

80‧‧‧Support block

90‧‧‧ Holding Department

92‧‧‧Interference bumps

S11‧‧‧ first spacing

S12‧‧‧Second spacing

S13‧‧‧ third spacing

A1‧‧‧External arm

B1‧‧‧ internal arm

52A‧‧‧ lower folding section

52B‧‧‧Under the reverse section

54A‧‧‧External oblique arm section

54B‧‧‧Outer oblique arm section

56A‧‧‧Upper folding section

56B‧‧‧Upper folding section

58A‧‧‧Intra-angled arm section

88B‧‧‧Intra-angled arm section

Claims (13)

A card edge connector comprising: an insulating base body having an elongated shape extending along a longitudinal direction and having a top surface and a bottom surface defining an up and down direction; wherein the top surface has a longitudinal direction along the vertical surface a first card body slot and a second wall body; The first wall body and the second wall body face opposite sides of the card edge slot, and the opposite direction of the card edge slot is opposite outer sides; the first wall body and the second wall body each have a plurality of terminal slots arranged side by side and laterally along the longitudinal direction; and a plurality of flat terminal terminals each mounted in each of the terminal slots, wherein a plate surface of each of the flat terminals extends in a direction parallel to the lateral direction, each of the flat plates The terminals respectively include: a base portion located below the flat plate terminal; a contact portion positioned above the flat plate terminal and extending into the card edge slot; and a resilient arm portion located between the base portion and the contact portion The elastic arm portion includes: a reverse folding section, connecting the a base portion extending from the base portion toward the opposite inner side and oppositely bent toward the opposite outer side and an obliquely upward direction; an outer oblique arm portion extending toward the opposite outer side direction and the obliquely upward direction; a reverse folding section extending in a direction opposite to the opposite inner side and a downward oblique direction; and an inner inclined arm section extending in a direction toward the opposite inner side and a downward oblique direction, wherein the elastic arm portion has a closed back a double-armed structure of the ring having an inner arm and an outer arm disposed along the entire contour of each of the flat terminals and having different contours, the inner arm and the outer arm respectively having corresponding to each other a lower reflexing section, the outer slanting arm section, the upper reflexing section, the inner slanting arm section, wherein the outer slanting arm section of the outer arm and the outer slanting arm section of the inner arm are separated by a first spacing, The upper reflexed section of the outer arm and the upper reflexed section of the inner arm are separated by a second spacing, and the inner inclined wall section of the outer arm and the inner inclined wall section of the inner arm are separated by a third spacing, wherein A thickness refers to the thickness of each flat terminal, and a width finger a width of each of the flat terminals in the direction of the board surface, wherein a width of the upper reflexed section of the inner arm is maximum among the sections of the inner arm and the sections of the outer arm; and the inner arm The width of the upper reflexed section is greater than the width of the upper reflexed section of the outer arm, wherein the width of the lower reflexed section of the inner arm is minimum in each section of the inner arm; and the lower arm of the outer arm The width of the reflexed section is the smallest among the sections of the outer arm, wherein the width of the lower reflexed section of the inner arm is greater than or equal to the width of the lower reflexed section of the outer arm, the outer oblique of the inner arm The width of the arm segment is greater than or equal to the width of the outer oblique arm segment of the outer arm, the width of the inner oblique arm segment of the inner arm is greater than or equal to the width of the inner oblique arm segment of the outer arm, wherein the second spacing Greater than the first pitch and the third pitch. The card edge connector of claim 1, wherein the second pitch is greater than the first pitch, and the first pitch is greater than the third pitch. The card edge connector of claim 2, wherein the width of the lower reflexed section of the inner arm is the same as the width of the lower reflexed section of the outer arm. The card edge connector of claim 3, wherein a ratio of a width of the inner arm and the outer arm to the thickness ranges from 1.3 to 2.3. The card edge connector of claim 1, 2, 3 or 4, wherein the contact portion has a contact edge and a guiding edge, the guiding edge is located above the contact edge, wherein the flat terminals further comprise a a flat terminal of the first row and a flat terminal of the second row, wherein the flat terminals of the first row are respectively mounted in the terminal slots of the first wall, and the flat terminals of the second row are respectively mounted on the first terminal In the terminal slots of the two walls, the height of the contact portion of each of the flat terminals of the first row is lower than the height of the contact portion of each of the flat terminals of the second row, wherein the flat terminals of the first column The angle between the guiding edge and the acute angle in the up and down direction is greater than the angle between the leading edge of each of the flat terminals of the second row and the acute angle of the up and down direction, and the inner arm of each of the flat terminals of the first column The width of the upper reflex section is greater than the width of the upper reflex section of the inner arm of each of the flat terminals of the second column. The card edge connector of claim 5, wherein a width of the inner oblique arm segment of the inner arm of each of the flat terminals of the second column is greater than the inner oblique of the inner arm of each flat terminal of the first column a width of the arm segment, wherein a width of the inner inclined arm segment of the outer arm of each of the flat terminals of the first row is equal to a width of the upper reflexed portion of the outer arm of each flat terminal of the first column, the first The width of the inner inclined arm section of the outer arm of each of the flat terminals of the two columns is equal to the width of the upper reflexed section of the outer arm of each flat terminal of the second row, and the flat terminal of the first column The width of the inner inclined arm section of the outer arm is larger than the width of the inner inclined arm section of the outer arm of each flat terminal of the second row, wherein the outer inclined arm of the inner arm of each flat terminal of the first row The width of the segment is greater than or equal to the width of the outer oblique arm segment of the inner arm of each of the flat terminals of the second column, wherein the width of the lower reflexed section of the outer arm of each flat terminal of the first column, the The width of the lower reflexed section of the inner arm of each of the flat terminals of the first row, and the outer arm of each of the flat terminals of the second row a width of the lower folding section, a width of the lower folding section of the inner arm of each of the flat terminals of the second row, a width of the outer inclined arm section of the outer arm of each flat terminal of the first row, The width of the outer inclined arm section of the outer arm of the flat terminal of the second row and the width of the outer inclined arm section of the inner arm of each flat terminal of the second row are equal to each other. The card edge connector of claim 6, wherein in each of the flat terminals of the first column: a width of the upper reflexed section of the inner arm is greater than a width of the upper reflexed section of the outer arm, the inner The inner inclined arm section of the arm has a width equal to the width of the inner inclined arm section of the outer arm, the outer inclined arm section of the inner arm has a width greater than or equal to a width of the outer inclined arm section of the outer arm, The width of the lower reflexed section of the inner arm is equal to the width of the lower reflexed section of the outer arm, and the width of the upper reflexed section of the inner arm is greater than the width of the inner inclined arm section of the inner arm, the inner arm The width of the inner inclined arm segment is greater than or equal to the width of the outer oblique arm segment of the inner arm, and the width of the outer oblique arm segment of the inner arm is greater than or equal to the width of the lower reflexed portion of the inner arm, The width of the upper reflexing section of the outer arm is the same as the width of the inner slanting arm section of the outer arm, the width of the inner slanting arm section of the outer arm is greater than the width of the outer slanting arm section of the outer arm, the outer The width of the outer inclined arm section of the arm is the same as the width of the lower reflexing section of the outer arm, and the ratio of the width of the inner arm and the outer arm and the ratio of the thickness 1.3-2.3, wherein in each of the flat terminals of the second column: the width of the upper reflexed section of the inner arm is greater than the width of the upper reflexed section of the outer arm, and the inner inclined arm section of the inner arm a width greater than a width of the inner inclined arm section of the outer arm, a width of the outer inclined arm section of the inner arm being equal to a width of the outer inclined arm section of the outer arm, and a width of the lower inverted section of the inner arm being equal to a width of the lower reflexed section of the outer arm, a width of the upper reflexed section of the inner arm being the same as a width of the inner inclined arm section of the inner arm, and a width of the inner oblique arm section of the inner arm being greater than the width The width of the outer oblique arm section of the inner arm, the width of the outer oblique arm section of the inner arm is equal to the width of the lower reflex section of the inner arm, and the width of the upper reflexing section of the outer arm is the same as the outer The width of the inner inclined arm section of the arm, the width of the inner inclined arm section of the outer arm is the same as the width of the outer inclined arm section of the outer arm, and the outer inclined arm section of the outer arm has the same width as the outer The width of the lower reflexed section of the arm, the ratio of the width of the inner arm and the outer arm to the thickness, is in the range of 1.3 to 2.0. The card edge connector of claim 1, wherein each of the flat terminals further includes a holding portion configured to interfere with the insulating seat. The card edge connector of claim 8, wherein the holding portion is integrally formed with the flat terminal. The card edge connector of claim 8, further comprising a plurality of support blocks, each support block being located between the base portion and the retaining portion, wherein each of the terminal slots further comprises a support block receiving slot, the supports The block accommodating grooves communicate with each other, and the support blocks are arranged side by side in the longitudinal direction in the support block accommodating grooves that communicate with each other. The card edge connector of claim 10, wherein the holding portion further comprises an interference protrusion, and wherein each of the support block receiving grooves further comprises a shallow groove, and the interference protrusion is interference-fixed with the shallow groove. The card edge connector of claim 11, wherein each of the terminals further comprises a tail portion, the insulating base body further comprising a plurality of terminal tail fixing slots configured to position and accommodate the flat terminal terminals The tail. The card edge connector of claim 5, wherein the upper end of the inner side of the first wall has an oblique insertion guide surface facing the card edge slot.