KR20220048770A - Socket connector - Google Patents

Abstract

Provided is a socket connector including a mold part (400), a fitting (500), and a first type socket terminal (600A). The first type socket terminal (600A) includes: (a) an outer end part (600A-1) exposed from a side wall of the mold part, and spaced upward from the bottom of the mold part; (b) an upper curved part (600A-2) bent convexly toward an upper part while extended inward in a width direction of the socket connector from the outer end part; (c) a lower curved part (600A-3) bent convexly toward a lower part while extended inward in the width direction of the socket connector from the upper curved part, wherein at least one portion of the part bent convexly toward the lower part is exposed when seen from the bottom of the mold part, and the bottom thereof is an embedded part embedded with respect to the substrate; and (d) an inner end part (600A-4) facing the upper part while extended inward in the width direction of the socket connector from the lower curved part, and combined with a terminal of a counterpart connector of the socket connector. Therefore, the present invention is capable of improving durability.

Description

socket connector {SOCKET CONNECTOR}

The present invention relates to a socket connector. More specifically, the present invention relates to a socket connector including a signal terminal having different positions of mounting parts, and a socket mold part including a support part for supporting the terminal when the terminal is operated to form a contact force.

In general, when substrates are interconnected, two connectors connected to each substrate by a method such as soldering are used, and the two connectors may be connected to each other. Here, one of the two connectors is a plug connector, and the other is a socket connector. A socket connector is also called a receptacle connector. Such a plug connector and a socket connector may be formed by disposing terminals in a mold part. A plug connector and a socket connector may be engaged with each other to form an electrical connector assembly.

In accordance with the trend of miniaturization of electronic devices, miniaturization and reduction in size of connectors are also required. However, there is a certain limit in reducing the pitch or reducing the size of the connector to reduce the size and height of the connector.

In addition, there is always a demand for improvement in durability against contact force or deformation of the socket terminal.

A technical problem to be solved by the present invention is to realize a lower height (reduction in length) of a connector without reducing a pitch or reducing components, and also to improve durability against contact force or deformation of a terminal.

For example, in a conventional socket connector, it is common that all mounting parts are arranged in a line at regular intervals. The problem in that case is that the spacing between the mounting parts is made small in order to make the connector smaller (that is, to reduce the height). is that it occurs.

That is, the plurality of socket terminals (particularly, signal terminals) must be electrically insulated from each other so that desired signals can be distinguished and transmitted. However, if the distance (pitch) between the signal terminals is reduced in the process of reducing the connector size, as described above, in the process of mounting the connector on the board, some signal terminals may be electrically connected to each other undesirably. . This is because even if the signal terminals are precisely arranged with a small predetermined pitch, the solder may not be able to follow the precise pitch during the mounting process and the solder may spread undesirably.

In addition, there are cases in which the contact force is insufficient at the moment the plug connector and the socket connector are coupled, or the terminal of the socket connector remains deformed for a long time when the coupled state is maintained for a long time, thereby weakening the contact pressure.

Technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to the present invention, there is provided a socket connector solder mounted on a board, comprising: a base; a first wall protruding from an upper surface of the base; a second wall protruding from the upper surface of the base and intersecting the first wall; and an upper surface of the base. a third wall portion protruding from and intersecting the second wall portion and facing the first wall portion; and a fourth wall portion projecting from an upper surface of the base portion, intersecting the first and third wall portions and facing the second wall portion; a mold part; a metal fitting installed on the first wall part; and a plurality of socket terminals installed on at least the second wall portion, wherein the plurality of socket terminals include at least a first type of socket terminal, wherein the first type of socket terminal includes (a) a width of the socket connector an outer end located outside the mold portion and exposed from the sidewall of the mold portion and spaced upward from the bottom surface of the mold portion, (b) extending from the outer end inward in the width direction of the socket connector and convex toward the upper portion The bent upper curved portion, (c) extending from the upper curved portion in the width direction of the socket connector and bent convexly downwardly, at least a portion of the bent portion convexly toward the lower portion of the mold portion a lower curved portion exposed when viewed from the bottom, and (d) an inner end portion that extends inwardly from the lower curved portion in the width direction of the socket connector and faces upward, and is coupled to a terminal of a mating connector of the socket connector, , the portion exposed when viewed from the bottom of the lower curved portion of the first type of socket terminal is a mounting portion mounted with respect to the substrate, the socket connector is provided.

Preferably, the plurality of socket terminals further include at least a second type of socket terminal, and the second type of socket terminal includes: (a') a sidewall of the mold part located outside the socket connector in a width direction an outer end exposed at the height of the bottom of the mold part, (b') an upper curved part extending inward in the width direction of the socket connector from the outer end and bent convexly upward, (c') the A lower curved portion extending inward in the width direction of the socket connector from the upper curved portion and bent convexly downward, and the portion bent convexly toward the lower portion is not exposed when viewed from the bottom surface of the mold portion, and ( d') extending from the lower curved portion inward in the width direction of the socket connector and facing upward, and including an inner end coupled to a terminal of a mating connector of the socket connector, and an outer end of the second type of socket terminal is a mounting unit mounted on the substrate.

Preferably, the first type socket terminal and the second type socket terminal are disposed to face each other in a width direction of the socket connector.

Preferably, the first-type socket terminal and the second-type socket terminal are alternately arranged one by one in a longitudinal direction of the socket connector.

Preferably, a support part, which is a part of the mold part, is formed below the connection part connecting the lower curved part and the inner end of the socket terminal, and the socket connector is coupled to the terminal of the counterpart connector so that the inner end is the inner side of the socket connector When operated as a , the connecting portion is supported in contact with the support portion.

Preferably, when the socket connector is viewed from the upper surface or the lower surface, there is a space penetrating vertically on the side surface of the inner end portion.

Preferably, when the socket connector is viewed from the upper surface or the lower surface, a space penetrating vertically is also present inside the inner end portion.

Preferably, an upper portion of the mounting portion of the socket terminal of the first type is covered by the mold portion, and when the socket connector is coupled with the terminal of the mating connector and the inner end is moved inward of the socket connector , an upper portion of the mounting portion is supported in contact with the mold portion.

Preferably, the socket terminal of the first type and the socket terminal of the second type are arranged to be mixed.

According to embodiments of the technical idea of the present invention, there are at least the following effects.

According to the present invention, the pitch of the second socket terminal 600 is the distance from the next terminal, but when the second socket terminal 600 is viewed only by the same type, which mounting part ( 600A-m) and the adjacent other mounting portions 600A-m are twice the pitch. Similarly, in the B-type terminal 600B, the distance between one mounting portion 600B-m and the adjacent positive portion 600B-m is twice the pitch.

That is, when the pitch between the second socket terminals 600 is m, the pitch between the mounting parts 600B-m of the B-type terminal 600B is 2m. Also in the A-type terminal 600A, the pitch between the mounting portions 600A-m is similarly set to 2m.

In addition, since the mounting portion 600B-m of the B-type terminal 600B (directly adjacent to the outer end 600B-1) and the outer end 600A-1 of the A-type terminal 600A have a height difference from each other, The risk that the solder (solder) to be used for the mounting portion 600B-m of the B-type terminal 600B is buried or spread on other parts of the A-type terminal 600A (eg, the outer end 600A-1, etc.) is significantly reduced .

If the solder cream or solder paste invades the adjacent terminals, there is a problem in that the terminals to be electrically separated are short-circuited. However, according to the present invention, the pitch between the plurality of second socket terminals 600 is narrow However, since it is only necessary to consider the pitch of the terminals of the same type (ie, the A-type terminals 600A or the B-type terminals 600B), the concern can be greatly reduced. This is because there is a margin of space between the mounting parts.

In this way, while leaving the pitch between the second socket terminals 600 (eg, signal terminals) as it is, the pitch between the mounting parts can be virtually doubled, which is a great help in reducing the size of the connector. Since the pitch of the socket terminals 600 can be made close, the length direction of the connector can be reduced as a whole.

In addition, in the prior art, the contact force is not sufficient at the moment when the plug connector and the socket connector are coupled, or when the coupled state is maintained for a long time, the terminal of the socket connector remains deformed for a long time, so that the contact pressure is weakened. According to the present invention, there is a support portion 400-s supporting the portions 600A-c and 600B-c where the lower curved portion 600A-3 and the end portion 600A-4 (inner end) meet. The support part 400 -s is a part of the socket mold part 400 , and serves to support the terminals 600A and 600B when the terminals 600A and 600B are operated to improve the contact force.

The support part 400-s, which is a part of the socket mold part 400, supports the connection parts 600A-c and 600B-c that receive the most stress, so that the contact force is improved. In addition, when the bonding state continues for a long time, the point in which the connection parts 600A-c and 600B-c tend to lose elasticity can be compensated to some extent.

In addition, the mold part 400 of the upper part (+Z direction) of the mounting part 600A-m of the A-type terminal 600A is a filled part (ie, the upper surface fixing part 400-u), and this mounting part ( The relative arrangement relationship of 600A-m) (ie, the lower curved portion 600A-3) and the upper surface fixing portion 400-u provides a higher fixing force. That is, when the inner end portion 600A-4 is moved, the upper surface fixing portion 400-u, which is a part of the mold portion 400, supports the mounting portion 600A-m from above, thus assisting the contact pressure. , it also helps to improve durability.

In addition, the mold portion 400 of the lower portion (-Z direction) of the lower curved portion 600B-3 of the B-type terminal 600B is a filled portion (ie, the lower surface fixing portion 400-d). The relative arrangement relationship between the curved portion 600B-3 and the lower surface fixing portion 400-d provides a higher fixing force. That is, when the inner end portion 600B-4 is moved, the lower surface fixing portion 400-d, which is a part of the mold portion 400, supports the lower curved portion 600B-3 from below, thus assisting the contact pressure. , it also helps to improve durability.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a view showing a socket connector 20 according to the present invention.
FIG. 2 is a top view of the socket connector 20 of FIG. 1 .
3 is an enlarged view of a part of FIG. 2 .
4 is a side cross-sectional view of the cross-section in the ab direction of FIG. 3 viewed from the side.
5 is a bottom view of the socket connector 20 of the present invention as viewed from the bottom.
6 is a view showing a side cross-section of the A-type terminal 600A in an operating state and a side cross-section of the B-type terminal 600B in an operating state overlapping each other.
FIG. 7 is a bottom view of the top view shown in FIG. 2 .
FIG. 8 is a side view of the socket connector 20 of FIG. 1 .

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

1 is a view showing a socket connector 20 according to the present invention.

The socket connector 20 will be described as follows.

The socket connector 20 may include, for example, a socket mold part 400 , a first socket terminal 500 , and a second socket terminal 600 .

The socket mold part 400 (mold part of the socket connector) may have a shape to accommodate the mold part (plug mold part) of the plug connector (not shown). For example, the mold part of the plug connector may have a shape to be inserted into a space defined by the mold part 400 of the socket connector.

The socket mold part 400 may be formed of an insulator including resin and epoxy, but is not limited thereto.

The first socket terminal 500 and the second socket terminal 600 may be disposed on a wall portion of the socket mold part 400 . In addition, the plurality of first socket terminals 500 and the plurality of second socket terminals 600 may be disposed on the wall portion of the socket mold part 400 .

In FIG. 1 , the two first socket terminals 500 are illustrated, although this is not necessarily the case, but it is preferable to form a symmetrical shape with the opposite wall surface.

In addition, the socket mold part 400 has a base. The socket mold part 400 includes a base, a first wall part 110 protruding from the upper surface of the base part, a second wall part 120 protruding from the upper surface of the base part and intersecting the first wall part 110, and protruding from the upper surface of the base part. and a third wall portion 130 that intersects the second wall portion 120 and faces the first wall portion 110, protrudes from the upper surface of the base portion and intersects the first wall portion 110 and the third wall portion 130 and crosses the second and a fourth wall portion 140 opposite to the wall portion 120 .

For example, a first socket terminal 500 is formed on the first wall part 110 , and a plurality of second socket terminals 600 are formed side by side on a second wall part 120 adjacent to the first wall part at about 90 degrees. , another first socket terminal 500 is formed on the third wall part 130 adjacent to the second wall part 120 at about 90 degrees, and the fourth wall part adjacent to the third wall part 130 at about 90 degrees ( A plurality of second socket terminals 600 different from 140 are formed side by side. In addition, the fourth wall portion 140 and the first wall portion 110 are adjacent to each other forming about 90 degrees.

Accordingly, the first wall part 110 and the third wall part 130 face each other and have a symmetrical shape, and the second wall part 120 and the fourth wall part 140 face each other and have a symmetrical shape.

The first socket terminal 500 and the second socket terminal 600 may include a conductive material.

For example, the first socket terminal 500 and the second socket terminal 600 may be formed of a metal material including copper, but is not limited thereto.

Accordingly, when the plug connector (not shown) is fastened to the socket connector 20 , the first plug terminal and the second plug terminal (not shown) are electrically connected to the first socket terminal 500 and the second socket terminal 600 . can be connected

For example, a first plug terminal (not shown) may be electrically connected to the first socket terminal 500 , and a second plug terminal (not shown) may be electrically connected to the second socket terminal 600 .

For example, when the first plug terminal is a power terminal, the first socket terminal 500 may input/output a power electrical signal. Depending on the situation, the first socket terminal 500 may be simply referred to as a metal ball, provided that no particular attention is paid to the fact that it is a power supply terminal and only the fact that a certain structure exists.

For example, when the second plug terminal is a signal terminal, the second socket terminal 600 may input/output an electrical data signal.

The socket connector 20 may be an exemplary socket connector to which a plug connector (not shown) according to an embodiment is fastened. The socket connector 20 may include, for example, a socket mold part 400 , a first socket terminal 500 , and a second socket terminal 600 .

The mold part 400 of the socket connector may have a shape to accommodate the mold part (plug mold part) of the plug connector (not shown). For example, the plug mold part may have a shape to be inserted into a space defined by the socket mold part 400 .

The socket mold part 400 may be formed of an insulator including resin and epoxy, but is not limited thereto.

The first socket terminal 500 and the second socket terminal 600 may be disposed on a wall portion of the socket mold part 400 . In addition, the plurality of first socket terminals 500 and the plurality of second socket terminals 600 may be disposed on the wall portion of the socket mold part 400 .

In the socket connector 20 of FIG. 1 , each of the first socket terminals 500 at both ends covers the plastic housing (the socket mold part 400 ). That is, there is no part where the plastic housing covers the first socket terminal 500 , the first socket terminal 500 covers the plastic housing, and the first socket terminal 500 is exposed. As a conventional example, there is a case in which a portion of the first socket terminal 500 (eg, a portion corresponding to the corner portion of the socket connector 20) is covered with a plastic housing. Because the metal of the body covers the entire housing, it prevents cracks in the housing and enables easier bonding operation.

On the other hand, as an example, the signal terminal as the second socket terminal 600 may consist of 32 PINs that allow a current of 0.3A, and the power terminal as the first socket terminal 500 can allow a current of 5A there is. However, in the example of FIG. 1, the number of PINs is eight. The socket mold part 400 of the socket connector 20 is preferably made of a plastic material, and may be, for example, liquid crystal polymer (LCP). The first socket terminal 500 and the second socket terminal 600 of the socket connector 20 are preferably made of a metal material, and may be, for example, gold-plated (nickel underlayer) on a copper alloy.

FIG. 2 is a top view of the socket connector 20 of FIG. 1 .

The second socket terminal 600 may be a mixture of a plurality of types (eg, two types). 2 shows that the A-type terminals 600A and B-type terminals 600B are alternately arranged. A-type terminals 600A and B-type terminals 600B are alternately disposed along the longitudinal direction (X direction) of the connector 20 , and A-type terminals 600A along the width direction (Y direction) of the connector 20 ) and the B-type terminal 600B face each other. That is, the A-type terminals 600A are arranged in a zigzag manner, and the B-type terminals 600B are also arranged in a zigzag form that engages them. However, this is a preferred embodiment, and the arrangement is not necessarily limited as shown in FIG. 2 .

3 is an enlarged view of a part of FIG. 2 .

In Fig. 3, the A-type terminal 600A includes an outer end 600A-1 (outer cut portion), an upper curved portion 600A-2; a lower curve 600A-3 (see FIG. 4), and an inner end 600A-4. The B-type terminal 600B includes an outer end 600B-1 (outer end), an upper curved portion 600B-2, a lower curved portion 600B-3, and an inner end 600B-4.

The inner side in the width direction refers to a central position in the width of the socket connector 20 . The outer side in the width direction refers to both ends in the width of the socket connector 20 . In the example of FIG. 3 , both the left and right sides are outside in the width direction, and the middle part is inside in the width direction.

Since it is difficult to grasp a three-dimensional shape with only FIG. 3, which is a top view, the cross section ab of FIG. 3 will be described below with reference to FIG. 4 which is a view viewed from the side.

4 is a side cross-sectional view of the cross-section in the ab direction of FIG. 3 viewed from the side.

A side cross-section of the A-type socket terminal 600A cut in a plane (YZ plane) orthogonal to the longitudinal direction (X-axis direction) of the socket connector 20 is shown on the left side of FIG. 4 .

Similarly, a side cross-section of the B-type socket terminal 600B cut in a plane (YZ plane) orthogonal to the longitudinal direction (X-axis direction) of the socket connector 20 is shown on the right side of FIG. 4 .

Looking at the schematic configuration, the A-type socket terminal (600A) is

Located outside the width direction (Y direction) of the socket connector 20, exposed at the sidewall of the mold part 400 (socket mold part), the outer end 600A- spaced upward from the bottom surface of the mold part 400 1; end);

An upper curved portion 600A-2 extending inwardly in the width direction (Y direction) of the socket connector 20 from the outer end portion 600A-1 and being bent convexly toward the upper portion (+Z direction);

While extending inwardly in the width direction (Y direction) of the socket connector 20 from the upper curved portion 600A-2, it is bent convexly toward the lower portion (-Z direction), and is bent convexly toward the lower portion (-Z direction). At least a portion of the formed portion is exposed when viewed from the bottom of the mold portion 400, the lower curved portion (600A-3), and

While extending inwardly in the width direction (Y direction) of the socket connector 20 from the lower curved portion 600A-3 and facing the upper portion (+Z direction), the mating connector of the socket connector 20 (plug connector not shown) The inner end (600A-4) coupled with the terminal (P) of

includes

In addition, the portion exposed when viewed from the bottom of the lower curved portion 600A-3 of the A-type socket terminal 600A functions as a mounting portion 600A-m mounted on the substrate.

A plug terminal (signal terminal) of the plug connector (not shown) is sandwiched between the inner side (inside in the width direction) of the upper curved portion 600A-2 and the outside (outside in the width direction) of the inner end portion 600A-4 and is coupled. .

In addition, looking at the schematic configuration, the B-type socket terminal 600B is

The socket connector 200 is located outside the width direction (Y direction), exposed from the side wall of the mold part 400, and located at the height of the bottom surface of the mold part 400, the outer end (600B-1; end),

An upper curved portion 600B-2 extending inward in the width direction of the socket connector 20 from the outer end portion 600B-1 and bent convexly toward the upper portion (+Z direction);

The portion extending inward in the width direction (Y direction) of the socket connector 20 from the upper curved portion 600B-2 is bent convexly toward the lower portion (-Z direction), and the portion bent convexly toward the lower portion of the mold The lower curved portion 600B-3 that is not exposed when viewed from the bottom of the portion 400, and

While extending inwardly in the width direction (Y direction) of the socket connector 20 from the lower curved part 600B-3 and facing the upper part (+Z direction), the terminal of the mating connector (not shown) of the socket connector 20 ( P) and the inner end (600B-4) coupled with

includes

And, the outer end 600B-1 of the B-type socket terminal 600B functions as a mounting portion 600B-m mounted on the substrate.

A plug terminal (signal terminal) of the plug connector (not shown) is sandwiched between the inner side (inside in the width direction) of the upper curved portion 600B-2 and the outside (outside in the width direction) of the inner end portion 600B-4 and is coupled. .

As in FIG. 3 , also in FIG. 4 , the term “inside” in the width direction refers to a central position in the width of the socket connector 20 . The outer side in the width direction refers to both ends in the width of the socket connector 20 . In the example of Fig. 4, both the left and right sides are outside in the width direction, and the middle portion is inside in the width direction.

That is, the inner side in the width direction in FIG. 4 refers to the middle part. The portion indicated by the arrow a in FIG. 4 is the outside, and the portion indicated by the arrow b is also the other outside.

The bending around the lower curved portion 600A-3 of the A-type socket terminal 600A is different from the bending around the lower curved portion 600B-3 of the B-type socket terminal 600B.

Specifically, the bending around the lower curved portion 600A-3 of the A-type socket terminal 600A protrudes further downward than around the lower curved portion 600B-3 of the B-type socket terminal 600B. , the periphery of the lower curved portion is easily exposed through a space cut out between the base portions of the socket mold portion 400 .

5, which will be described later, it can be seen that the periphery of the mounting portion 600A-m is exposed.

Although the difference in the bending state around the lower curves (ie, 600A-3, 600B-3) shown in the left and right sides of FIG. 4 is not essential, if bending as shown in the left and right sides of FIG. 4 is A, The mounting part 600A-m of the type terminal 600A is exposed to the space between the bases of the socket mold part 400 , and the lower curved part 600B-3 of the B type terminal 600B is the socket mold part 400 . It becomes easier to make it covered by the base (that is, covered when viewed from the bottom to the top, as in FIG. 5 to be described later).

In FIG. 4 , it can be seen that the A-type terminal 600A and the B-type terminal 600B have different shapes.

The height of the outer ends 600A-1 and 600B-1 of the second socket terminal 600 is different depending on the type of the terminal 600 . That is, although it is commonly referred to as the second socket terminal 600 , referring to FIGS. 1 and 4 , there is a terminal 600A having a high outer end 600A-1 and a height of the outer end 600B-1 is higher. There is a lower terminal 600B. Higher height means that it is further in the +Z-axis direction in FIGS. 1 to 4 .

Referring back to FIG. 1 , although it is in contact with the socket mold part 400 , it can be seen that the high outer end 600A-1 and the low outer end 600B-1 are mixed.

As shown in FIG. 4 , the high outer end 600A-1 and the low outer end 600B-1 are mixed.

The second socket terminal 600 having the high outer end 600A-1 is referred to as an A-type terminal 600A, and the second socket terminal 600 having the low outer end 600B-1 is referred to as B It can be classified as a type terminal 600B.

In the conventional socket connector, there is only one type of terminals corresponding to the second socket terminal of the present invention, and even if the shapes are slightly different, the heights of the outer ends 600A-1 and 600B-1 are different as shown in FIGS. 1 and 4 . The other two types of terminals were not mixed.

In FIG. 4 , in the A-type second socket terminal 600A and the B-type second socket terminal 600B, it has been described that the heights of the outer ends 600A-1 and 600B-1 are different. However, the A-type terminal 600A and the B-type terminal 600B are not only different in height of the outer ends 600A-1 and 600B-1, but also have different mounting positions.

The mounting part refers to bonding a part of the second socket terminal 600 to the board by soldering or the like so that the second socket terminals 600 (600A, 600B) are fixed to the board.

As shown in FIG. 4 , the lower side immediately adjacent to the outer end 600B-1 of the B-type second socket terminal 600B becomes the mounting portion 600B-m. However, in the A-type second socket terminal 600A, unlike that, the lower portion immediately adjacent to the outer end portion 600A-1 is not the mounting portion, but the lower curved portion 600A-3 that is more biased toward the center of the socket connector 20 . The lower side of is the mounting portion (600A-m).

That is, when viewed from FIG. 3 , a plurality of mounting units are not arranged in a line on one line in the X-axis direction, but a plurality of mounting units 600A-m and 600B-m are arranged over two lines in the X-direction.

Therefore, considering only the mounting portion 600A-m of the A-type terminal 600A, one line is formed sequentially at a constant interval in the X-axis direction, and the mounting portion 600B-m of the B-type terminal 600B is formed. ), another line is formed sequentially at regular intervals in the X-axis direction. That is, these two lines are parallel to each other. And these two lines are spaced apart from each other at a certain distance in the Y-axis direction.

In a conventional socket connector, it is common that all mounting parts are arranged on the same line at regular intervals. The problem in that case is that when the spacing between mounting parts is reduced to make the connector smaller (that is, to reduce the height), the solder (solder) that attaches the mounting part to the board comes into contact with the adjacent mounting part. is that it occurs.

That is, the plurality of socket terminals (signal terminals) must be electrically insulated from each other so that desired signals can be distinguished and transmitted. However, if the distance (pitch) between the signal terminals is reduced in the process of reducing the connector size, as described above, in the process of mounting the connector on the board, some signal terminals may be electrically connected to each other undesirably. will be This is because even if the signal terminals are precisely arranged to have a certain pitch, the solder may not be able to follow the precise pitch in the process of mounting on the board and the solder may spread undesirably.

However, referring to FIGS. 1 and 2, for example, when the pitch between adjacent second socket terminals 600 is m, it can be easily seen that the pitch between the mounting parts of the second socket terminals 600 is 2m, not m. will be able

That is, according to the present invention, the pitch of the second socket terminal 600 is the distance from the adjacent terminal, but the distance between one mounting portion 600A-m and another adjacent mounting portion 600A-m is 2 of the pitch. doubles

And the distance between one mounting part 600B-m and another mounting part 600B-m also becomes twice the said pitch.

If the solder cream or solder paste invades the adjacent terminals, there is a problem in that the terminals to be electrically separated are short-circuited. However, according to the present invention, the pitch between the plurality of second socket terminals 600 is narrow However, since it is only necessary to consider the pitch of the terminals of the same type (ie, the A-type terminals 600A or the B-type terminals 600B), the concern can be greatly reduced. This is because there is a margin of space between the mounting parts.

1 to 4, when the A-type terminal 600A and the B-type terminal 600B are alternately arranged, the outer end 600A-1 of the A-type terminal and the outer end 600B of the B-type terminal -1) is different in height. In addition, only the B-type terminal 600B has a mounting portion formed adjacent to the outer end thereof. As shown in FIG. 4 , the A-type terminal 600A does not have a surface adjacent to the outer end thereof, but a portion 600A-m spaced a predetermined distance from it in the Y-axis direction becomes the mounting part.

Then, when the pitch between the second socket terminals 600 is m, the pitch of the B-type terminal 600B between the mounting parts 600B-m is 2m. Also in the A-type terminal 600A, the pitch between the mounting portions 600A-m is similarly set to 2m.

In addition, since the mounting portion 600B-m of the B-type terminal 600B (directly adjacent to the outer end 600B-1) and the outer end 600A-1 of the A-type terminal 600A have a height difference from each other, The risk that the solder (solder) to be used for the mounting portion 600B-m of the B-type terminal 600B is buried or spread on other parts of the A-type terminal 600A (eg, the outer end 600A-1, etc.) is significantly reduced . This height difference can be clearly seen from FIGS. 1 and 4 .

As shown in the sectional side view of FIG. 4 , the arch shape near the lower curved portion 600A-3 of the A-type terminal 600A is different from that of the lower curved portion 600B-3 of the B-type terminal 600B.

Due to such a difference, when viewed from the bottom as shown in FIG. 5 to be described later, the lower curved portion 600A-3 (the bottom surface of which becomes the mounting portion 600A-m) of the A-type terminal 600A is exposed, and B The lower curved portion 600B-3 of the type terminal 600B is hidden by the socket mold portion 400 and is not visible. That is, whether the socket mold part 400 is covered is different.

On the other hand, the cross section of the socket mold part 400 is shown in FIG. 4 , and hatched portions in the cross section indicate the face directly cut when cut in the ab direction. And, in the socket mold part 400 of FIG. 4 , the portion not hatched indicates that it is retreated back from the cut surface (ie, it is retreated in the -X direction in FIG. 4 ). That is, the empty space S is indicated in FIG. 3 . Referring to the existence of the empty space S of FIG. 3 , the structure of the same empty space S of FIG. 4 may be easily understood. As described above, the hatched portion of the socket mold part 400 of FIG. 4 is a portion directly cut by the ab-direction cut surface of FIG. 3, and the non-hatched portion is not a direct cut surface, so it is marked with an empty space (S) in FIG. It can be understood that the upper and lower portions are penetrated.

Due to the existence of the empty space S, the terminals (in particular, the ends 600A-4 and 600B-4) are more freely movable, and if the support part 400-s of the mold supports only to some extent, the terminals 600A, 600B) (in particular, the section from the connecting portions 600A-c, 600B-c to the inner ends 600A-4, 600B-4) can be moved while freely exerting elastic force up and down.

In particular, among the hatched cross-sections of the socket mold part 400, the lower curved part 600A-3 and the end part 600A-4 (inner end) meet the connecting parts 600A-c and 600B-c supporting parts ( 400-s) exist. The support part 400-s is a part of the socket mold part 400 and serves to support the terminals 600A and 600B when the terminals 600A and 600B are operated to improve the contact force (described later in FIG. 6 ). box).

In addition, when viewed from the side cross-sectional view of FIG. 4 , the mold part 400 of the upper part (+Z direction) of the mounting part 600A-m of the A-type terminal 600A is filled with a portion (ie, the upper surface fixing part 400 ). -u)). Also through FIG. 3 (top view), it can be seen that the upper surface fixing part 400 - u covers a part of the A-type terminal 600A from the upper surface. The relative arrangement relationship between the mounting portion 600A-m (ie, the lower curved portion 600A-3 ) and the upper surface fixing portion 400-u provides a higher fixing force. For reference, such a structure may be implemented by insert molding or the like.

That is, the upper part of the mounting part 600A-m of the A-type socket terminal 600A is covered by a part 400-u of the socket mold part 400 , and the socket connector 20 is a mating connector (not shown). ) of the terminal (see P of FIG. 6 to be described later) and the inner end 600A-4 is moved to the inside of the socket connector 20, the upper portion of the mounting portion 600A-m is the mold portion 400 It is supported in contact with the upper surface fixing part (400-u) that is a part of the.

In addition, when viewed from the side cross-sectional view of Figure 4, the mold portion 400 of the lower portion (-Z direction) of the lower curved portion 600B-3 of the B-type terminal 600B is a filled portion (that is, the lower surface fixing portion ( 400-d)). Also through FIG. 5 (bottom view), it can be seen that the lower surface fixing part 400 - d covers a part of the B-type terminal 600B from the lower surface. The relative arrangement relationship between the lower curved portion 600B-3 and the lower surface fixing portion 400-d provides a higher fixing force.

That is, when the inner end portion 600B-4 is moved, the lower surface fixing portion 400-d, which is a part of the mold portion 400, supports the lower curved portion 600B-3 from below, thus assisting the contact pressure. , it also helps to improve durability.

5 is a bottom view of the socket connector 20 of the present invention as viewed from the bottom.

In Fig. 5, the lower curved portion 600A-3 (the bottom surface of which becomes the mounting portion 600A-m) of the A-type terminal 600A is exposed, and the lower curved portion 600B-3 of the B-type terminal 600B. ) is hidden by the socket mold part 400, so it can be confirmed that it is not visible. 4 , the arch shape of the A-type terminal 600A and the arch shape of the B-type terminal 600B are different from each other. If the arch shape is so different, as shown in FIG. 5 , the lower curved part 600B-3 of the B-type terminal 600B is covered by the socket mold part 400 (when viewed from the bottom to the top), and the A-type terminal The lower curved portion 600A-3 of 600A (the bottom surface of which is the mounting portion 600A-m) is easy to expose.

However, it is not limited to this illustration, and the arch shape when the vicinity of the mounting portion 600A-m of the A-type terminal 600A is cut in the YZ plane and the lower curved portion 600B-3 of the B-type terminal 600B Although the arch shape when cut in the YZ plane is not different, the lower curved portion 600B-3 of the B-type terminal 600B is covered by the socket-molded portion 400 according to the shape of the socket molded portion 400, and the A-type terminal The mounting portion 600A-m of the 600A may be formed to be exposed.

In the above example, it has been described that the A-type second socket terminals 600A and B-type second socket terminals 600B are alternately disposed one by one. Although this example is preferred, the present invention is not limited thereto.

That is, the A-type terminal 600A, the B-type terminal 600B, the A-type terminal 600A, the B-type terminal 600B, ... are arranged side by side in this order to effectively double the pitch between the mounting parts. It is preferable in terms of being able to increase and the ease of molding the socket mold part 400, but it is not necessarily limited thereto.

For example, the sequence of the A-type terminal 600A, the B-type terminal 600B, the B-type terminal 600B, ... may be repeated. Alternatively, the sequence of the A-type terminal 600A, the A-type terminal 600A, the B-type terminal 600B, ... may be repeated.

Alternatively, it is also possible that they are mixed without a specific rule.

Alternatively, in a certain section, the A-type terminal 600A, the B-type terminal 600B, the B-type terminal 600B, ... is repeated in the order, and the edge of the second socket terminal 600 (ie, the first socket) is repeated. It is also possible to arrange in a different manner only in the portion close to the terminal 500 .

As such, the arrangement order of the A-type terminals 600A and B-type terminals 600B is not limited. The reason is that the A-type terminal 600A, B-type terminal 600B, A-type terminal 600A, B-type terminal 600B, . Although it is the most efficient in that it can be doubled, even if it is not the entire section, if the pitch is increased in some sections, the mounting efficiency increases as much.

FIG. 6 is a diagram showing a side cross-section of the A-type terminal 600A in an operating state and a side cross-section of the B-type terminal 600B in an operating state overlapping each other.

However, unlike FIG. 4 showing only a specific cross-section, in FIG. 6 , side cross-sections of the terminals 600A and 600B extending along the X-direction are shown overlapping each other. 4 shows a state in which the plug connector is not coupled to the socket connector 20 (that is, a state in which the terminals 600A and 600B are not operated), FIG. 6 shows that the plug terminal P is the second socket terminal There is a difference in that it represents a state coupled to (600; 600A, 600B) (that is, a state in which the terminals 600A and 600B are operated). The plug terminal P of the plug socket (not shown) in FIG. 6 is shown in an arbitrary shape for convenience in order to show the operating state of the second socket terminal 600 (600A, 600B), and the plug terminal P is It is not limited to the shape shown in FIG. Rather, the plug terminals (signal terminals) of the plug connector (not shown) are formed inside (inside in the width direction) of the upper curved portions 600A-2 and 600B-2 and outside (width) of the inner ends 600A-4 and 600B-4. It will be more common in the form of being sandwiched and coupled between).

In FIG. 6 , the support part 400-s of the socket mold part 400 includes the lower curved parts 600A-3 and 600B-3 that are curved parts under the second socket terminals 600A and 600B and the inner ends 600A- 4 and 600B-4) are supported to connect the portions 600A-c and 600B-c.

As shown in FIG. 6 , when the socket connector 20 and the plug connector are coupled, the terminal 600A and the terminal 600B both receive the greatest stress at the connection portions 600A-c and 600B-c. And, since the support part 400-s, which is a part of the socket mold part 400 shown in FIG. 6, supports the connection parts 600A-c and 600B-c that receive the most stress, the contact force is improved. In addition, when the bonding state continues for a long time, the point in which the connection parts 600A-c and 600B-c tend to lose elasticity can be compensated to some extent.

FIG. 7 is a bottom view of the top view shown in FIG. 2 .

Also, Fig. 5 shows a part of Fig. 7 .

In FIG. 7, a portion indicated by a hatched line is a mounting part. Specifically, for the terminal 600A, the mounting portion 600A-m is the bottom surface of the lower curved portion 600A-3, and for the terminal 600B, the mounting portion 600B-m is the bottom surface of the outer end portion 600B-1. 1) is.

When the center points of the mounting portion 600A-m of the A-type terminal 600A are connected in the X direction, one virtual line (for convenience, the line A) is formed.

In addition, when the center points of the mounting portions 600B-m of the B-type terminal 600B are connected to each other, another virtual line (for convenience, the line B) is formed.

Lines A and B do not overlap and are parallel.

The center point may be a center of gravity or an area center. However, although it is said that the center points are connected, this center point does not have to be the center of gravity in the strict sense or the center of the area in the strict sense. That is, even if a specific point of the mounting part 600A-m of the A-type terminal 600A is selected and the said selected specific point is connected in some A-type terminal 600A arrange|positioned, it is the same. The same is true for the B-type terminal 600B.

For example, in FIG. 7, line B was obtained by selecting and connecting the center of the area or weight of the plurality of mounting parts 600B-m, but positions corresponding to each other in the plurality of mounting parts 600B-m (for example, 7), it can be seen that a new line B parallel to the line A is obtained even if the corresponding points are connected. In other words, an imaginary line A connecting the same points of the plurality of mounting parts 600A-m for mounting the A-type socket terminal 600A on the board and the B-type socket terminal 600B are connected to the board. It may be said that the imaginary line B connected to the same points of the plurality of mounting units 600B-m for mounting on the .

At this time, since the A-type terminals 600A and B-type terminals 600B are alternately arranged, the plurality of second socket terminals 600 (A-type terminals 600A and B-type terminals 600B) are connected to each other. When the pitch of the A-type terminal 600A is m, the pitch between the mounting parts 600A-m of the A-type terminal 600A is 2m, and the mounting parts 600B-m of the B-type terminal 600B are mounted on each other. It can be easily grasped that the pitch of is also 2 m.

Of course, various modifications may be made. For example, even if the A-type terminal 600A and the B-type terminal 600B are alternately disposed on the second wall part 120 as shown in FIG. , it is also possible to arrange only the B type terminals).

Alternatively, even if the terminals 600A and 600B are mixed without a certain rule, the line A connecting the mounting parts 600A-m and the line B connecting the mounting parts 600B-m do not overlap each other. The point forming the line will not change.

Of course, in terms of efficiency, the form shown in FIG. 7 would be the best, but even if some of the second socket terminals 600 deviate from the rule, the effect of increasing the pitch between the mounting parts is generally exhibited.

The right side of FIG. 7 is similar to the left side of FIG. 7 , but viewed from a different perspective.

In FIG. 7 , it can be seen that when the mounting portions of the adjacent second socket terminals 600 are connected to each other, a zigzag shape is obtained. If the A-type terminals 600A and B-type terminals 600B are alternately arranged one by one, an accurate zigzag arrangement will be obtained.

This is a different expression of the description of the lines A and B on the left side of FIG. 7 . Due to this zigzag arrangement, the pitch between the socket terminals 600A or 600B of the same type is doubled compared to the pitch between the plurality of second socket terminals 600 .

However, as described above, the arrangement may be slightly changed. That is, if the A-type terminal 600A and the B-type terminal 600B are alternately arranged one by one, an accurate zigzag arrangement will be obtained, but the order of the terminals 600A, 600A, 600B, ... Even if it is repeatedly arranged with , an approximate zigzag arrangement is obtained even if it is not an exact zigzag arrangement.

Alternatively, even if the terminals 600A and 600B are mixed without a specific rule, it may be said to be an approximate zigzag arrangement even if it is not an exact zigzag arrangement. Of course, in terms of efficiency, the form shown in FIG. 7 would be the best, but even if some of the second socket terminals 600 deviate from the rule, the effect of increasing the pitch between the mounting parts is generally exhibited.

In FIG. 7 , a case in which four terminals are disposed in the X direction has been described, but the number of terminals is not limited thereto, and may be any number (eight, 16, etc.). In addition, the arrangement of the second wall portion 120 and the fourth wall portion 140 is shown to be regular, and although this is preferable, it is not necessarily limited thereto, and the second socket terminal in the fourth wall portion 140 is not limited thereto. The arrangement state of 600 ( 600A, 600B) may be independent of the arrangement state of the second socket terminal 600 ( 600A, 600B) in the second wall part 120 . That is, in the second wall portion 120 , the terminals 600A and 600B are alternately disposed one by one, and in the fourth wall portion 140 , only the terminals 600A exist, and various modifications are possible.

In addition, although the A-type terminal 600A and the B-type terminal 600B have been described, it may be assumed that a C-type terminal having another shape having a different mounting position is also present. Of course, considering the ease of manufacture and arrangement, it is most preferable to alternately arrange the A-type terminals 600A and B-type terminals 600B one by one, but the present invention provides another third type (eg, C type) terminals are also not excluded.

FIG. 8 is a side view of the socket connector 20 of FIG. 1 .

The outer end 600A-1 of the A-type terminal 600A is at a position somewhat higher from the bottom surface, and the outer end 600B-1 of the B-type terminal 600B is at a position equal to or slightly lower than the bottom surface. It can be seen that it exists in

In the B-type terminal 600B, the bottom surface of the outer end portion 600B-1 functions as a mounting portion 600B-m, which is a portion to be mounted on a substrate by soldering or the like.

In the A-type terminal 600A, the outer end portion 600A-1 does not function as a mounting portion, but instead the mounting portion 600A-m, which is a portion where the bottom surface of the lower curved portion 600A-3 is mounted on the board by soldering or the like. ) to function as

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, but may be manufactured in various different forms, and those of ordinary skill in the art to which the present invention pertains. It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

20: socket connector
110: first wall part
120: second wall part
130: third wall part
140: fourth wall part
400: socket mold part
400-s: support
400-u: upper surface fixing part
400-d: lower surface fixing part
500: first socket terminal
600: second socket terminal
600A: A-type terminal among the second socket terminals
600A-1: the outer end of the A-type terminal 600A
600A-2: the upper curved portion of the A-type terminal 600A
600A-3: the lower curved portion of the A-type terminal 600A
600A-4: the inner end of the A-type terminal 600A
600A-m: Mounting part of A-type terminal (600A) (bottom surface of the lower curved part)
600A-c: a connection portion between the lower curved portion 600A-3 and the inner end portion 600A-4 of the A-type terminal
600B: B-type terminal among the second socket terminals
600B-1: the outer end of the B-type terminal 600B
600A-2: the upper curved portion of the B-type terminal 600B
600B-3: the lower curved portion of the B-type terminal 600B
600B-4: the inner end of the B-type terminal 600B
600B-m: Mounting part of the B-type terminal 600B (bottom surface of the outer end)
600B-c: a connection portion between the lower curved portion 600B-3 and the inner end portion 600B-4 of the B-type terminal

Claims (9)

A socket connector soldered to a board, comprising:
A base portion, a first wall portion protruding from the upper surface of the base portion, a second wall portion protruding from the upper surface of the base portion and intersecting the first wall portion, and the first wall portion projecting from the upper surface of the base portion and intersecting the second wall portion a mold part including a third wall part opposite to the mold part, a fourth wall part protruding from an upper surface of the base part, intersecting the first and third wall parts, and facing the second wall part;
a bracket installed on at least the first wall portion; and
a plurality of socket terminals provided on at least the second wall portion
includes,
wherein the plurality of socket terminals include at least a first type of socket terminal;
The first type of socket terminal is
(a) an outer end located outside the socket connector in the width direction, exposed from a side wall of the mold part, and spaced apart from the bottom surface of the mold part upward;
(b) an upper curved portion extending inward in the width direction of the socket connector from the outer end and bent convexly upward;
(c) extending from the upper curved portion inward in the width direction of the socket connector and bent convexly toward the lower portion, at least a portion of the portion bent convexly toward the lower portion is exposed when viewed from the bottom of the mold portion a lower curve in the
(d) the inner end of the socket connector extending inward in the width direction of the socket connector from the lower curved portion and facing upward, and coupled to the terminal of the mating connector of the socket connector
includes,
The socket connector, characterized in that the portion exposed when viewed from the bottom of the lower curved portion of the first type socket terminal is a mounting portion mounted with respect to the substrate. The method of claim 1,
The plurality of socket terminals further include at least a second type of socket terminal,
The second type of socket terminal,
(a') an outer end positioned outside the socket connector in the width direction and exposed from a sidewall of the mold part, and positioned at the height of the bottom surface of the mold part;
(b') an upper curved portion extending inwardly in the width direction of the socket connector from the outer end and bent convexly upward;
(c') extending from the upper curved portion inward in the width direction of the socket connector and being convexly bent downwardly, the portion bent convexly toward the lower portion is not exposed when viewed from the bottom of the mold portion lower curve, and
(d') the inner end of the socket connector extending inward in the width direction of the socket connector from the lower curved portion and facing upward, and coupled to the terminal of the mating connector of the socket connector
includes,
An outer end of the second type of socket terminal is a mounting portion mounted on the board. 3. The method of claim 2,
The socket connector of claim 1, wherein the first-type socket terminal and the second-type socket terminal are disposed to face each other in a width direction of the socket connector. 4. The method of claim 2 or 3,
The socket connector according to claim 1, wherein the first-type socket terminal and the second-type socket terminal are alternately arranged one by one in a longitudinal direction of the socket connector. 4. The method according to any one of claims 1 to 3,
A support part, which is a part of the mold part, is formed below the connection part connecting the lower curved part and the inner end of the socket terminal,
When the socket connector is coupled to the terminal of the mating connector and the inner end is moved to the inside of the socket connector, the connector is supported in contact with the support portion. 4. The method according to any one of claims 1 to 3,
When the socket connector is viewed from an upper surface or a lower surface, a space penetrating vertically is present in a side surface of the inner end. 7. The method of claim 6,
When the socket connector is viewed from an upper surface or a lower surface, a space penetrating vertically is also present inside the inner end of the socket connector. 4. The method according to any one of claims 1 to 3,
The upper portion of the mounting portion of the first type of socket terminal is covered by the mold portion,
When the socket connector is coupled to the terminal of the mating connector and the inner end is moved to the inside of the socket connector, an upper portion of the mounting portion is supported in contact with the mold portion. 4. The method of claim 2 or 3,
The socket connector according to claim 1, wherein the first-type socket terminal and the second-type socket terminal are mixedly arranged.

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