Patent Publication Number: US-2023146943-A1

Title: Pin array assembly and connector for high-speed signal transmission using the same

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     The present application claims priority to Korean Patent Application No. 10-2021-0154469, filed Nov. 11, 2021, the entire contents of which is incorporated by reference herein for all purposes. 
     BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The present disclosure relates to a pin array assembly and a connector for high-speed signal transmission using the same and, more particularly, to a connector technology in which high-speed signal transmission characteristics are guaranteed by implementing a pin array assembly with multiple pins whose pitches are precisely adjusted by insert injection and a connector capable of relieving stress caused by an external force while applying the pin array assembly. 
     Description of the Related Art 
     A board-to-board connector (BTB connector) is widely used to electrically connect circuit boards. When connectors are coupled, an electrical connection is made by matching between pins, enabling electrical signal transmission between a board and a board. 
     Recently, due to the demand for scalable computing, high-speed signal transmission connectors with high data rates of 28 Gbps, 56 Gbps, or 112 Gbps or more are required. In addition, with the miniaturization and slimming of the system applying the BTB connector, connectors with specifications such as high density, low profile, and low thermal resistance are required. 
     In order to meet these requirements, the number of connector pins increases, the pin pitch is further narrowed, the size of the pin becomes smaller, and the pin is getting thinner at the same time. 
     In particular, in order to ensure the reliability of a connector&#39;s high-speed signal transmission characteristics, stable and precise mounting of pins on a connector body is required. 
     Yet, as the pin pitch of the connector is further narrowed, it is difficult to precisely maintain the pitches when the pins are mounted on the connector body. In case the pin pitches of the connector are not uniform, the matching may be misaligned when coupling the connectors, and since proper matching is not achieved, the reliability of the connector for high-speed signal transmission is deteriorated. 
     Moreover, the smaller and thinner connector pins may be bent or deformed even by a weak external force and may be damaged by an external force above a certain level, and thus, there is a high risk of the pins being deformed or damaged when the pins are installed in the connector body. 
     When connectors are forcibly coupled in a state where the connector pins are not installed in the correct position or are bent and deformed, the pins themselves may be damaged. 
     In addition, for the high-speed signal transmission characteristics, the impedance of the connector pin needs to be precisely maintained at a level of less than a few ohms. A surface mount technology (SMT) for soldering is applied in mounting the connector on the board, and at this time, solder rise occurs in which the mounting material climbs up the connector pin, causing a problem to change the impedance of the connector pin. 
     Impedance change of the connector pin due to solder rise causes contact failure when connecting with the other connector. 
     Thus, it is necessary to remove the contamination of the pins by the mounting material after the pins are mounted, but there is a problem that such contamination is practically impossible to remove. 
     Due to the problem factors described above, the high-speed signal transmission characteristics are deteriorated, and when the board-to-board electrical connection is made through connectors, a malfunction of the entire system is caused. 
     Furthermore, external force may be applied to the connector due to various factors such as coupling with a counterpart connector, and as the external force applied to the connector is transferred to the pin as it is, it may affect a board contact area of the pin, causing damage to the board contact area or separation of the pin from the board. 
     Due to the damage to the board contact area, poor contact of the connector greatly impairs the reliability of high-speed signal transmission characteristics that require high data rates of 28 Gbps, 56 Gbps, or 112 Gbps or more. 
     In addition, external force above a certain level may affect the board itself, causing damage to sensitive electronic components mounted on the board. 
     DOCUMENTS OF RELATED ART 
     
         
         (Patent Document 0001) Korean Patent No. 10-2031505 
         (Patent Document 0002) Korean Patent Application Publication No. 10-2020-0130144 
       
    
     SUMMARY OF THE INVENTION 
     Accordingly, the present disclosure has been made keeping in mind the above problems occurring in the related art, and the present disclosure is intended to provide a 
     In order to achieve the above objective, according to an embodiment of the present disclosure, there is provided a connector that ensures reliability for high-speed signal transmission characteristics and mounting stability on a board. 
     Moreover, an objective of the present disclosure is to minimize the change in impedance that determines high-speed signal transmission characteristics due to imprecise pin pitch and solve the problem of mechanical mismatch when connecting connectors by solving the problem that it difficult to maintain precise connector pin pitch. 
     Furthermore, an objective of the present disclosure is to solve the problem that a connector pin is deformed or damaged when the pin is installed in a connector body as the pin bends or deforms even with a weak external force due to the reduced size and thickness of the pin. 
     In addition, an objective of the present disclosure is to solve the problem of change in impedance of a connector pin and a contact defect with a counterpart pin as a mounting material such as solder or a solder ball rides up the pin when mounting pins on a connector. 
     Particularly, an objective of the present disclosure is to solve the problem that a malfunction of the entire system occurs when a board-to-board electrical connection is made through connectors that require high-speed signal transmission characteristics due to the problem factors occurring in mounting the pins on the connector. 
     In addition, an objective of the present disclosure is to solve the problem that as the external force applied to the connector is transferred to the pin as it is due to various factors such as coupling with a counterpart connector, it affects a board contact area of the pin, causing damage to the board contact area or separation of the pin from the board. 
     Furthermore, an objective of the present disclosure is to solve the problem that the external force above a certain level is transferred to the board through the pins of the connector, causing damage to sensitive electronic components mounted on the board. 
     The objectives of the present disclosure are not limited to the above, and other objectives and advantages of the present disclosure not mentioned may be understood by the following description. 
     In order to achieve the above objective, according to an embodiment of the present disclosure, there is provided a pin array assembly, including: a pin array in which a plurality of pins, each including a body area in which a through hole is famed, are arranged to be spaced apart; a lower support in which a lower end of the pin array is insert-molded and sealed, and configured to support the lower end of the pin array while maintaining a set pitch of the pin array; and an upper support in which a middle portion of the pin array is insert-molded and sealed, and configured to support the middle portion of the pin array while maintaining the set pitch of the pin array. 
     As an example, a pin of the plurality of pins may include: a head area provided with a curved portion that is bent to protrude in one direction and matches a pin of a mating connector; a tail area whose end is mounted; and a body area configured to connect the head area and the tail area and have a through hole formed in a center thereof so as to be deformable in a width direction, wherein a portion of the head area, a portion of the body area, or portions of the head area and the body area may be insert-molded in the upper support and supported, and a portion of the body area, a portion of the tail area, or portions of the body area and the tail area may be insert-molded in the lower support and supported. 
     At this time, the tail area of pin may include: a mounting portion recessed into a semicircle or polygon at an end thereof. 
     In an embodiment, the tail area of pin may include: a mounting portion formed in a bending shape bent in a lateral direction at an end thereof. 
     As an example, the pin array may have a directionality to be coupled with pins of a mating connector, wherein a directional groove may be formed at one end of the lower support to correspond to the directionality. 
     In addition, a connector for high-speed signal transmission of an embodiment according to the present disclosure includes: the pin array assembly; a base mold mounted and fixed on a board and in which the lower support is inserted and supported so that an end of the pin is mounted and fixed to the board; and a top mold in which the upper support is inserted and supported. 
     When the connector is mounted on the board, the rise of a mounting material along the pin may be primarily prevented by the lower support and may be secondarily prevented by the upper support. 
     Furthermore, the connector for high-speed signal transmission may further include: a fastening means configured to support a relative movement of the top mold with respect to the base mold, and to assemble the top mold on top of the base mold, wherein an end contact portion of the pin mounted on the board via the base mold may be fixed and maintained, and when an external force is applied, the body area of the pin may be bent and deformed according to the relative movement of the top mold with respect to the base mold via the fastening means. 
     The fastening means may include: an assembly fastening part formed to protrude in a vertical direction from a side of one of the base mold and the top mold; and an assembly insertion part formed to be wider than a cross-sectional length of the assembly fastening part on a side of a remaining one, so that the assembly fastening part is inserted and fastened, wherein the base mold and the top mold may be assembled by a fastening of the assembly fastening part and the assembly insertion part, and when the external force is applied, the assembly fastening part may be moved in a cross-sectional length direction in the assembly insertion part, so that the relative movement of the top mold is made. 
     As an example, the top mold may include: a top body frame; a plurality of main partition walls provided to be spaced apart in a longitudinal direction inside the top body frame; a plurality of sub partition walls spaced apart in the longitudinal direction inside the top body frame and provided between the main partition walls; and a mounting slot provided by the main partition walls and the sub partition walls and into which the upper support of the pin array assembly is inserted and mounted. 
     The top mold may further include: a pin seating space provided in the main partition wall so that the head area of the pin of the pin array assembly is inserted and seated. 
     Furthermore, the pin seating space may be provided on each side of the main partition wall. 
     The pin seating space may have one side open so that a left-right movement of the head area of the pin is restricted while a front-rear movement is possible. 
     As an example, the base mold may include: a base body frame; a base bottom surface formed on a lower part of the base body frame; a plurality of mounting partition walls spaced apart in a longitudinal direction inside the base body frame and provided on an upper surface of the base bottom surface; and a mounting groove provided between the mounting partition walls and into which the lower support of the pin array assembly is inserted and mounted. 
     The base mold may further include: a mounting hole formed as a through hole in the base bottom surface, and in which a solder ball is seated in a downward direction and the end of the pin of the pin array assembly is inserted and mounted in an upward direction. 
     In the mounting hole, a mounting part of the pin array assembly may be inserted and mounted in the upward direction, a portion of an upper part of the solder ball may be joined in the downward direction to fill a part of a cross section thereof, and an air passage may be formed at a remaining part of the cross section. 
     Furthermore, the connector for high-speed signal transmission may further include: a cavity formed as a space in which the body area of the pin is positioned between the lower support mounted on the base mold and the upper support mounted in the top mold. 
     As an example, the connector may be a hermaphroditic connector in which the pin of the pin array assembly is capable of selectively performing a function of a receptacle or a plug. 
     As another example, the connector may be a receptacle connector or a plug connector in which the pin of the pin array assembly performs either a function of a receptacle or a plug. 
     According to the present disclosure, it is possible to provide a connector that can guarantee reliability for high-speed signal transmission characteristics. 
     In particular, since pitches of connector pins can be maintained precisely by supporting a pin array with an upper support and a lower support using insert injection molding method, it is possible to solve the problem of mismatching due to pin pitch error when coupling connectors, and to ensure reliability and stability for high-speed signal transmission characteristics. 
     In addition, in the case of high-speed signal transmission connectors with high data rates of 28 Gbps, 56 Gbps, or 112 Gbps or higher for application to scalable computing, etc., a connector pin is easily bent or deformed even by a weak external force due to the reduced size and thickness of the pin, leading to a problem of pins being deformed or damaged when the pins are mounted on a connector body. This problem can be solved by means of a pin array assembly. 
     Furthermore, since the rise of the mounting material on the pin is primarily prevented by the lower support and secondarily by the upper support by applying the insert injection molding method to seal the lower portion and the middle portion of the pin array, it is possible to solve the problem of impedance change of the connector pin and a contact defect with a counterpart pin due to the mounting material riding up the pin. 
     In particular, it is possible to solve the problem that high-speed signal transmission characteristics are deteriorated due to various problem factors that occur in mounting individual pins on the connector body, and that malfunction of the entire system is caused due to poor electrical connection. 
     The effects of the present disclosure are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from this specification and accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other objectives, features, and other advantages of the present disclosure will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings, in which: 
         FIGS.  1 A and  1 B  are perspective views of an embodiment of a pin array assembly according to the present disclosure; 
         FIGS.  2 A and  2 B  are perspective views of an example of a pin of the pin array assembly according to the present disclosure; 
         FIGS.  3 A and  3 B  show a double contact structure of the pin according to the present disclosure when mated with a mating connector; 
         FIGS.  4 A and  4 B  are perspective views of another example of the pin of the pin array assembly according to the present disclosure; 
         FIGS.  5 A to  5 C  show an example of manufacturing process of the pin array assembly according to the present disclosure; 
         FIG.  6    is a perspective view of an embodiment of a connector for high-speed signal transmission according to the present disclosure; 
         FIG.  7    is an exploded perspective view viewed from the upper side of the embodiment of the connector for high-speed signal transmission according to the present disclosure; 
         FIG.  8    is an exploded perspective view viewed from the lower side of the embodiment of the connector for high-speed signal transmission according to the present disclosure; 
         FIG.  9    is a plan view of an example of a top mold in the connector for high-speed signal transmission according to the present disclosure; 
         FIGS.  10 A and  10 B  are cut-away views of the example of the top mold of  FIG.  9   ; 
         FIG.  11    is a plan view of an example of a base mold in the connector for high-speed signal transmission according to the present disclosure; 
         FIGS.  12 A and  12 B  are cut-away views of the example of the base mold of  FIG.  11   ; 
         FIGS.  13  and  14    show an example in which a plurality of pin array assemblies are arranged in the longitudinal direction according to the directionality in the connector for high-speed signal transmission according to the present disclosure; 
         FIGS.  15 A to  15 F  show an example of manufacturing process of the connector for high-speed signal transmission according to the present disclosure; 
         FIG.  16    is an example in which the connector for high-speed signal transmission according to the present disclosure is mounted on a board; 
         FIGS.  17  and  18    are cross-sectional views of the example of  FIG.  16   ; 
         FIG.  19    is an example of a structure for relieving stress of the pin in the connector for high-speed signal transmission according to the present disclosure; 
         FIGS.  20 A and  20 B  a cross-sectional view viewed from the front and a cross-sectional view viewed from the side of the example of  FIG.  19   ; and 
         FIGS.  21 A,  21 B,  22 A, and  22 B  are cross-sectional views showing the relationship of stress relief operation of pins in the connector for high-speed signal transmission according to the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, the present disclosure is not limited by the embodiments. 
     In order to explain the present disclosure, the operational advantages of the present disclosure, and the objectives achieved by the practice of the present disclosure, the embodiments of the present disclosure are exemplified below and will be described with reference thereto. 
     First, the terms used in this application are only used to describe specific embodiments, and are not intended to limit the present disclosure, and a singular expression may include a plural expression unless the context clearly indicates otherwise. In addition, it should be understood that in the present disclosure, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and do not preclude the possibility of addition or existence of one or more other features or numbers, steps, operations, components, parts, or combinations thereof. 
     In describing the present disclosure, when it is determined that a detailed description of a related known configuration or function may obscure the gist of the present disclosure, the detailed description thereof will be omitted. 
     The present disclosure proposes a pin array assembly and a connector for high-speed signal transmission using the same and, more particularly, a connector technology in which high-speed signal transmission characteristics are guaranteed by implementing a pin array assembly with multiple pins whose pitches are precisely adjusted by insert injection and a connector capable of relieving stress caused by an external force as the pin array assembly is applied. 
     In the case of high-speed signal transmission connectors to support scalable computing, etc., in order to meet various requirements, the number of connector pins increases, the pin pitch is further narrowed, the size of the pin becomes smaller, and the pin is getting thinner at the same time. 
     In particular, in order to secure stability and reliability for high-speed signal transmission characteristics, the pitch between adjacent pins of a pin array must be precisely maintained. However, if each pin is individually mounted on a connector body, it is not possible to precisely maintain the pitch between the pins and pitch error occurs. 
     In addition, due to the reduced size and thickness, the pins are deformed or damaged even by a weak external force, so it is very difficult to stably mount the pins to the connector body. 
     Due to the pitch error and the defamation or damage of the pins upon installation, etc., the precise matching between pin arrays when coupled with a counterpart connector is not made, which causes problems in high-speed signal transmission. 
     Accordingly, in the present disclosure, a pin array assembly is presented as a way to easily mount a pin array on a connector body while precisely adjusting and maintaining the pin pitch, as well as a high-speed signal transmission connector structure for easy application of the pin array assembly according to the present disclosure. 
     Furthermore, external force may be applied to the connector due to various factors such as coupling with the counterpart connector, and as the external force applied to the connector is transferred to the pin as it is, it may affect a board contact area of the pin, causing damage to the board contact area or separation of the pin from the board. In particular, a certain level of external force transferred to the board affects sensitive electronic components mounted on the board. 
     Therefore, the present disclosure presents the high-speed signal transmission connector structure in which a base mold and a top mold of a connector are separated, so that when an external force is applied, the contact portion of the pin mounted on the board via the base mold is stably fixed while the body of the pin is deformed to a certain level according to the relative movement of the top mold, thereby relieving the stress caused by the external force. 
       FIGS.  1 A and  1 B  show an embodiment of a pin array assembly according to the present disclosure.  FIG.  1 A  is a perspective view of the pin array assembly  200  viewed from the front, and  FIG.  1 B  is a perspective view of the pin array assembly  200  viewed from the rear. 
     The pin array assembly  200  may include a pin array  210 , an upper support  250 , and a lower support  270 . 
     In the pin array  210 , a plurality of pins  220  may be arranged to be spaced apart from each other in a lateral direction. 
     The upper support  250  may maintain a uniform pitch between the pins  220  arranged in the pin array  210  while supporting the middle portion of the pin array  210 . The lower support  270  may maintain a constant pitch between the pins  220  arranged in the pin array  210  while supporting the lower end of the pin array  210 . 
     In particular, the upper support  250  may be provided so that the middle portion of the pin array  210  is insert-molded and sealed while the lower support  270  may be provided so that the lower end of the pin array  210  is insert-molded and sealed. 
     That is, in the pin array assembly  200  according to the present disclosure, the upper support  250  and the lower support  270  may be formed using injection molding by inserting the pin array  210  so that the pitches between the plurality of pins  220  arranged in the pin array  210  can be precisely adjusted and maintained. 
     The pin array assembly  200  may have a directionality according to the shape of the pins  220  of the pin array  210 . As an example, depending on the shape of a head area of the pin  220 , the pin array assembly  200  may have a directionality to be seated on a connector body. 
     A directional protrusion  275  may be provided at one end of the lower support  270  to correspond to the directionality of the pin array assembly  200 , and the pin array assembly  200  may be mounted on the connector body according to the directional protrusion  275 . 
     The pin  220  constituting the pin array  210  will be described in more detail with reference to examples. 
       FIGS.  2 A and  2 B  are perspective views of an example of a pin of the pin array assembly according to the present disclosure. 
     The pin  220  may include a head area  221 , a body area  224 , and a tail area  227 . 
     The head area  221  of the pin  220  may include: a curved portion  222  bent to protrude in one direction to match a pin of a counterpart connector; and a stub  223  with the end bent in the other direction. 
     Due to the shape of the head area  221  of the pin  220 , the pin array assembly  200  in which the pins  220  are arranged has directionality. 
     Since the head area  221  of the pin  220  has an S-shaped double contact structure when the connector is coupled with a mating connector, the reliability of contact with a mating pin may be further improved. 
     In this regard, referring to a double contact structure of the pin according to the present disclosure when coupled with the mating connector shown in  FIGS.  3 A and  3 B , when two connectors are matched to each other, as head areas  221 - 1  and  221 - 2  of mutually coupled pins  220 - 1  and  220 - 2  go all the way to the ends of the mating pins&#39; head areas  221 - 1  and  221 - 2 , they are in contact with each other by the elastic force of the curved portions  222 - 1  and  222 - 2 , so that the double contact point T 1 , T 2  structure may be formed. 
     Due to this double contact structure, it is possible to secure the reliability and stability of high-speed signal transmission characteristics. 
     The pin  220  will be continuously described with reference to  FIGS.  2 A and  2 B  again. 
     The body area  224  of the pin  220  connects the head area  221  and the tail area  227 , and may include a through hole  225  formed in the center thereof. 
     Since the pin  220  is thin, bending deformation is easy to some extent in the thickness direction, but it is not easy to bend and deform in the width direction because it has a certain level of width. In order to maintain a certain level of impedance that determines the contact area and high-speed signal transmission characteristics with the corresponding pin when coupled with the mating connector, it is not possible to reduce the width below a certain level. Due to this functional problem, bending deformation in the width direction of the pin  220  is impossible. 
     However, in the present disclosure, the through hole  225  is formed in the body area  224  of the pin  220  so that deformation in the width direction is possible in the body area  224 . 
     By forming the through hole  225  in the center of the body area  224 , the body area  224  may be divided into two pin body bars  226   a  and  226   b  by the through hole  225 , and since the width of the pin body bars  226   a  and  226   b  may be reduced to a certain level by adjusting the size of the through hole  225 , deformation in the width direction may be made possible in the body area  224  although deformation in the width direction is impossible in the head area  221  and the tail area  227  of the pin. 
     That is, the pin  220  applied to the present disclosure has a thickness capable of bending deformation at a certain level in the front-rear direction by an external force, and bending deformation is also possible even in the width direction, which is the left-right direction due to the structure having the through hole  225  formed in the body area  224  of the pin. 
     In this way, by enabling defamation in the width direction in the body area  224  of the pin  220 , the pin  220  is deformed to a certain level in the width direction when the connector is coupled with the mating connector to support alignment between the connectors, and stress may be relieved through bending deformation when an external force is applied. 
     The tail area  227  of the pin  220  may have an end portion  228  mounted on the connector body. In the embodiment of the connector according to the present disclosure to be described later, the end portion  228  of the tail area  227  of the pin  220  may be mounted on a board via the base mold. To be specific, the end portion  228  of the tail area  227  is inserted into a mounting groove of the base mold and may be mounted on the board using solder. 
     The end portion  228  of the tail area  227  of the pin  220  may be formed in an inwardly recessed semicircular shape. By forming the end portion  228  of the tail area  227  in the semicircular shape, a contact area with the solder is increased to maintain a strong and stable mounting. 
     Moreover, the tail area of the pin may be detailed into various shapes to ensure that the mounting remains stable. In this regard,  FIGS.  4 A and  4 B  are perspective views of another example of the pin of the pin array assembly according to the present disclosure. 
     Since a head area  231  and a body area  234  of a pin  230  shown in  FIGS.  4 A and  4 B  are similar to the head area  221  and the body area  224  of the pin  220  presented in the embodiment of  FIGS.  2 A and  2 B  described above, a description thereof will be omitted. 
     An end portion  238  of a tail area  237  of the pin  230  may be formed in a bending shape in which a portion is bent to one side. By forming the end portion  238  of the tail area  237  in a curved bending shape, a contact area with the solder is increased to maintain a strong and stable mounting. 
     The pin array assembly  200  according to the present disclosure as described above is configured such that the upper support  250  for supporting the pin array  210  is provided while the middle portion of the pin array  210  is insert-molded and sealed, and the lower support  270  for supporting the pin array  210  is provided while the lower end of the pin array  210  is insert-molded and sealed. A process of manufacturing such pin array assembly  200  will be described with reference to an example. 
       FIGS.  5 A to  5 C  show an example of manufacturing process of the pin array assembly according to the present disclosure. 
     As shown in  FIG.  5 A , the pin array  210  supported by a carrier  215  is manufactured by presswork so that the pitches of the pins  220  are adjusted by means of the carrier  215  so as to maintain the arrangement. 
     As shown in  FIG.  5 B , the middle portion of the pin array  210  supported by a carrier  215  is inserted to produce the upper support  250  by injection molding whereas the lower end of the pin array  210  is inserted to produce the lower support  270  by injection molding. 
     Since the pin array  210  is inserted to produce the upper support  250  and the lower support  270  by a molding method in a state in which the pitches between the pins  220  are maintained by the carrier  215 , the pitch of the pin array  210  may be maintained in a precisely adjusted state. 
     The carrier supporting the lower portion of the pin array  210  that is insert-molded in the upper support  250  and the lower support  270  is removed as shown in  FIG.  5 C . 
     The lower end of the pin array  210  from which the carrier  215  is removed may be properly machined, by processing the end portion  228  of each of the pins  220  arranged in the pin array  210  into a semicircular shape or a curved bending shape, it is possible to increase the contact area of the solder to achieve a strong and stable mounting as described above. 
     In an embodiment, when manufacturing the pin array  210  supported by the carrier  215  as shown in  FIG.  5 A , a circular through hole may be formed in the connection portion between the end of the pin array  210  and the carrier  215  by presswork, and when the carrier  215  supporting the pin array  210  is removed as shown in  FIG.  5 C , a semicircular mounting portion may be formed at the end portion  228  of the pin array  210  by cutting the middle of the through hole. 
     Through this manufacturing process, the pin array assembly  200  according to the present disclosure may be produced. 
     In the above-described embodiment of the pin array assembly according to the present disclosure, the pin array assembly is described to be applied to a connector that is a hermaphroditic connector in which the pins of the pin array assembly are capable of selectively performing a function of a receptacle or a plug. However, the present disclosure is not limited thereto, and the pins of the pin array assembly may be configured as receptacle pins and applied to a receptacle connector or may be configured as plug pins and applied to a plug connector. 
     For example, the head area of the pin may be formed in the form of a receptacle to accommodate the mating pin or the head area of the pin may be formed in the form of a plug to accommodate in the other pin. 
     In addition, the present disclosure presents a connector for high-speed signal transmission capable of relieving stress caused by an external force as the pin array assembly according to the present disclosure is applied. Hereinafter, the connector for high-speed signal transmission according to the present disclosure will be described with reference to an embodiment. 
       FIG.  6    is a perspective view of an embodiment of a connector for high-speed signal transmission according to the present disclosure,  FIG.  7    is an exploded perspective view viewed from the upper side of the embodiment of the connector for high-speed signal transmission according to the present disclosure, and  FIG.  8    is an exploded perspective view viewed from the lower side of the embodiment of the connector for high-speed signal transmission according to the present disclosure. 
     The connector  100  according to the present disclosure may include a top mold  110 , a base mold  130 , and the pin array assembly  200 . 
     The body of the connector  100  may be configured by being separated into the top mold  110  at an upper side and the base mold  130  at a lower side. The top mold  110  and the base mold  130  may be assembled to correspond to each other via the fastening means including an assembly fastening part  170  and an assembly insertion part  180 . The top mold  110  may be assembled on the upper part of the base mold  130  by inserting and fastening the assembly fastening part  170  of the top mold  110  into the assembly insertion part  180  provided in the base mold  130 . 
     When an external force is applied while the connector  100  is mounted on a board, the fastening means may support the top mold  110  to move relative to the base mold  130  according to the external force while maintaining a fixed state mounted on the board. 
     A plurality of pin array assemblies  200   a  and  200   b  may be arranged and seated on the base mold  130  in a longitudinal direction, and the top mold  110  may be seated thereon and assembled. At this time, the pin array assembly according to the present disclosure described above may be applied as the pin array assembly  200 . 
     The pin array assembly  200  may be mounted on the base mold  130  by using a solder ball  190  bonding method. Ends of the plurality of pin array assemblies  200   a  and  200   b  arranged in the longitudinal direction may be mounted on the base mold  130  by using a ball grid array (BGA) method, and the connector  100  may be seated on and fixed to a board (not shown) by solder balls  190  on a lower surface of the base mold  130 . 
     Here, the solder ball bonding method for seating the connector  100  on the board is one example, and various bonding methods may be applied. As an example of another bonding method, the connector  100  may be implemented in a state in which the pin array assembly  200  is mounted on the base mold  130  and the top mold  110  without applying a solder ball, or in the process of mounting the connector  100  on the board, the end of the pin may be mounted on the board using a mounting material such as solder paste. 
     The connector  100  according to the present disclosure has a structure in which the top mold  110  and the base mold  130  are separated, and thus, while the end contact portion of the pin  220  mounted on the board via the base mold  130  is maintained in a fixed state, the body area of the pin  220  is bent and deformed according to the relative movement of the top mold  110  by an external force, so that the stress caused by the applied external force may be relieved. 
     Each configuration of the connector  100  according to the present disclosure will be described with reference to examples. 
       FIG.  9    is a plan view of an example of a top mold in the connector for high-speed signal transmission according to the present disclosure,  FIG.  10 A  is  10 B is a cut-away view of the example of  FIG.  9    taken along the X 1 -X 1 ′ direction, and  FIG.  10 B  is a cut-away view of the example of  FIG.  9    taken along the Y 1 -Y 1 ′ direction. 
     The top mold  110  may include a top body frame  111 , and a plurality of main partition walls  113  and a plurality of sub partition walls  114  spaced apart in the longitudinal direction inside the top body frame  111 . 
     A mounting slot  112  into which a middle portion of the pin array assembly  200  is able to be inserted may be provided in a space between the main partition wall  113  and the sub partition wall  114 . 
     Pin seating spaces  115   a  and  115   b  in which the head areas of respective pins arranged in the transverse direction of the pin array assembly  200  are inserted and seated may be provided on each side surface of the main partition wall  113 , respectively. Each of the pin seating spaces  115   a  and  115   b  may be provided as a space larger than the pin head area by a certain level so that the pin head area may be moved within a certain range. Each of the pin seating spaces  115   a  and  115   b  may be formed as a slot-shaped space with one side open so that the movement in the left-right direction of the pin head area is restricted while the movement in the front-rear direction is possible. 
     The plurality of pin array assemblies  200   a  and  200   b  may be inserted and mounted on the mounting slots  112  provided by the main partition walls  113  and the sub partition walls  114  in the longitudinal direction. The upper support of the pin array assembly  200  may be inserted and mounted in the mounting slot  112  of the top mold  110 . 
     The pin array assembly  200  has a directionality, and the plurality of pin array assemblies  200   a  and  200   b  may be alternately mounted in the mounting slots  112  while changing the insertion direction according to the directionality. 
     The assembly fastening part  170  may be provided at the middle portions of the left side and the right side of the top body frame  111  of the top mold  110 . The assembly fastening part  170  may include: a fastening support leg  171  formed by protruding vertically downward from the middle portions of the left side and the right side of the top body frame  111 ; and a fastening protrusion  172  protruding outward from the end of the fastening support leg  171 . 
     The assembly fastening part  170  may also be provided at the middle portions of the upper side and the lower side of the top body frame  111  of the top mold  110 . Similarly, the assembly fastening part  170  may include: a fastening support leg  175  formed by protruding vertically downward from the middle portions of the upper side and the lower side of the top body frame  111 ; and a fastening protrusion  176  protruding outward from the end of the fastening support leg  175 . Although in this embodiment, it has been illustrated and described that the assembly fastening part  170  is provided on each of the left side, the right side, the upper side, and the lower side of the top mold  110 , depending on the situation, the arrangement number, arrangement position, shape, etc. of the assembly fastening part  170  may be selectively and variously modified. 
       FIG.  11    is a plan view of an example of a base mold in the connector for high-speed signal transmission according to the present disclosure,  FIG.  12 A  is a cut-away view of the example of  FIG.  11    taken along the X 2 -X 2 ′ direction, and  FIG.  12 B  is a cut-away view of the example of  FIG.  11    taken along the Y 2 -Y 2 ′ direction. 
     The base mold  130  may include a base body frame  131 , a base bottom surface  132 , and a mounting partition wall  133 . 
     The mounting partition walls  133  are provided inside the base body frame  131  and spaced apart along the longitudinal direction, and a mounting groove  135  into which an end portion of the pin array assembly  200  is able to be inserted and mounted may be provided in a space between the mounting partition walls  133 . 
     A plurality of mounting grooves  135  may be provided along the longitudinal direction by the plurality of mounting partition walls  133  provided to be spaced apart along the longitudinal direction. 
     The plurality of pin array assemblies  200   a  and  200   b  may be inserted and mounted in the mounting grooves  135  provided between the mounting partition walls  133  along the longitudinal direction, and the lower support of the pin array assembly  200  may be inserted and mounted in the mounting groove  135  of the base mold  130 . 
     In addition, as previously described, the pin array assembly  200  has a directionality, and the plurality of pin array assemblies  200   a  and  200   b  may be alternately mounted in the mounting grooves  135  of the base mold  130  while changing the insertion direction according to the directionality. In order to make it easier to distinguish the mounting direction, a directional groove  136  may be famed at one end of the mounting groove  135  so that a directional protrusion formed on one side of the lower support of the pin array assembly  200  may be matched and inserted. 
     On the base bottom surface  132 , mounting holes  137 , in which solder balls  190  are seated on the lower surface thereof and the end portions of the pins of the pin array assembly  200  are inserted and mounted on the upper surface thereof, may be formed. At this time, the mounting hole  137  may be formed in such a size that the end portion of the pin tail area of the pin array assembly  200  is able to be inserted in one direction and a portion of the solder ball  190  is able to be inserted in the other direction. 
     Although the mounting hole  137  is illustrated as a rhombic through hole in this embodiment, the mounting hole may be formed in various shapes in which the solder ball can be stably seated. As an example, the shape of the mounting hole  137  may be variously changed to a circle, an oval, a polygon, etc. in consideration of the shape of the end portion of the pin tail area and the size of the solder ball, and the cross-sectional size of the through hole may also be changed. The size and shape of the through hole of the mounting hole  137  may be determined in consideration of high-speed signal transmission characteristics of the connector and stability when the connector is mounted on a board. 
     In addition, in the mounting hole  137 , an upper part of the solder ball is inserted to fill a part of the cross section of the mounting hole  137 , and the remaining part of the cross section of the mounting hole  137  that is not filled may function as an air passage. The air flow through the mounting hole  137  may function as a kind of dielectric to adjust the impedance of the connector. 
     The assembly insertion part  180  may be provided in the middle of the left side and in the middle of the right side of the base body frame  131  of the base mold  130  to correspond to the assembly fastening part  170  of the top mold  110 . 
     The assembly insertion part  180  may include: a fastening hole  181  famed in the middle of the left side and in the middle of the right side of the base body frame  131 ; and a locking jaw  182  protruding from the inside of the fastening hole  181 . At the upper end of the locking jaw  182 , an inclined portion  183  may be provided to guide the assembly fastening part  170  to the fastening hole  181 . 
     In addition, the assembly insertion part  180  may also be provided in the middle of the upper side and in the middle of the lower side of the base body frame  131  of the base mold  130  in correspondence with the assembly fastening part  170  of the top mold  110 . Likewise in this case, the assembly insertion part  180  may include a fastening hole  185  formed in the middle of the upper side and in the middle of the lower side of the base body frame  131 , and a locking jaw  186  protruding from the inside of the fastening hole  185 , and at the upper end of the locking jaw  186 , an inclined portion  187  may be provided to guide the assembly fastening part  170  to the fastening hole  185 . 
     In this embodiment, it is illustrated and described that the assembly insertion part  180  is provided on each of the left side and right side and upper side and lower side of the base mold  130  corresponding to the embodiment of the top mold  110  discussed above. However, in correspondence with the deformation of the assembly fastening part  170 , the arrangement number, arrangement position, shape, etc. of the assembly insertion part  180  may be selectively and variously modified. 
       FIGS.  13  and  14    show an example in which a plurality of pin array assemblies are arranged in the longitudinal direction according to the directionality in the connector for high-speed signal transmission according to the present disclosure. 
     The pin array assembly  200  according to the present disclosure as described above may be applied as the plurality of pin array assemblies  200   a ,  200   b ,  200   c , and  200   d  arranged in the longitudinal direction. 
     In the plurality of pin array assemblies  200   a  and  200   b , each of the upper supports  250   a  and  250   b  is inserted and mounted in the mounting slot  112  of the top mold  110 , and each of the lower supports  270   a  and  270   b  may be inserted and mounted in the mounting groove  135  of the base mold  130 . 
     The plurality of pin array assemblies  200   a ,  200   b ,  200   c , and  200   d  may be mounted while changing the insertion direction by alternating insertion directions. As described above in the embodiment of the top mold  110 , the pin seating spaces  115   a  and  115   b  provided in the main partition wall  113  of the top mold  110  have insertion directionality of the pin array assemblies  200   a ,  200   b ,  200   c , and  200   d , and accordingly, the plurality of pin array assemblies  200   a ,  200   b ,  200   c , and  200   d  may be inserted and mounted in the top mold  110  by matching the mounting insertion directions. 
     In addition, directional protrusions  275   a  and  275   b  for distinguishing directions are formed at one ends of the lower supports  270   a  and  270   b  of the pin array assemblies  200   a  and  200   b . The plurality of pin array assemblies  200   a  and  200   b  may be inserted and mounted in the base mold  130  by aligning the directional protrusions  275   a  and  275   b  with the directional grooves  136  of the base mold  130 . 
     The connector for high-speed signal transmission  100  according to the present disclosure may be manufactured more easily by applying the pin array assembly  200  according to the present disclosure. In this regard,  FIGS.  15 A to  15 F  show an example of manufacturing process of the connector for high-speed signal transmission according to the present disclosure. 
     Since  FIG.  15 A  briefly shows and describes each configuration of the connector, specific details of each configuration will be described with reference to the above-described embodiments. 
     The manufacturing process of the connector for high-speed signal transmission  100  presented in  FIG.  15    assumes that the pin array assembly  200  is prepared through the manufacturing process of the pin array assembly  200  shown in  FIG.  5   . 
     In a state in which the pin array assembly  200  is prepared, the pin array assembly  200   a  is inserted and mounted in the mounting groove  135  of the base mold  130  in one direction as shown in  FIG.  15 A . The lower support  270   a  of the pin array assembly  200   a  may be inserted and mounted into the mounting groove  135  of the base mold  130 . At this time, the pin array assembly  200   a  is mounted on the base mold  130  by matching the directional protrusion formed on one side of the lower support  270   a  of the pin array assembly  200   a  to the directional groove formed on one side of the mounting groove of the base mold  130 . 
     When the pin array assembly  200   a  is mounted on the base mold  130 , the end portion of each pin of the pin array assembly  200  is inserted into the mounting hole  137  provided in the base bottom surface of the base mold  130 . 
     When the pin array assembly  200   a  is mounted in one direction, the next pin array assembly  200   b  is inserted and mounted in the mounting groove  135  of the base mold  130  in the other direction as shown in FIG.  15 B. As in the case of pin array assembly  200   a , the pin array assembly  200   b  is mounted on the base mold  130  by matching the directional protrusion formed on one side of the lower support  270   b  of the pin array assembly  200   b  to the directional groove famed on one side of the mounting groove of the base mold  130 . 
     As such, by alternately inserting and mounting the plurality of pin array assemblies  200   a  and  200   b  into the plurality of mounting grooves  135  formed to be spaced apart in the longitudinal direction of the base mold  130  while changing the direction, the plurality of pin array assemblies  200   a  and  200   b  may be inserted and mounted on the base mold  130  as shown in  FIG.  15 C . 
     As shown in  FIG.  15 D , in a state in which the plurality of pin array assemblies  200   a  and  200   b  are inserted and mounted on the base mold  130 , the top mold  110  is assembled thereon. The upper supports  270   a ,  270   b  of the plurality of pin array assemblies  200   a ,  200   b  are inserted and mounted into the mounting slots  112  of the top mold  110 , and each pin head area of the pin array assemblies  200   a  and  200   b  is mounted to the pin seating space provided on each side of the main partition wall of the top mold  110  to be seated. 
     At this time, the assembly of the base mold  130  and the top mold  110  may be performed via the fastening means. To be specific, the top mold  110  may be assembled on the upper part of the base mold  130  by inserting and fastening the assembly fastening part of the top mold  110  in accordance with the assembly insertion part provided in the base mold  130 . 
     In a state in which the base mold  130  and the top mold  110  are stably assembled via the fastening means, by bonding the solder balls  190  to the lower surface of the mounting holes  137  of the base mold  130 , the pin array assemblies  200   a  and  200   b  may be mounted via the solder balls  190  as shown in  FIG.  15 E . 
     Through the above process, the connector  100  as shown in  FIG.  15 F  may be completed. 
       FIG.  16    is an example in which the connector for high-speed signal transmission according to the present disclosure is mounted on a board, and  FIGS.  17  and  18    are cross-sectional views of the example of  FIG.  16   . 
       FIG.  17    is a cut-away view of the example of  FIG.  16    taken along the X 3 -X 3 ′ direction, and  FIG.  18    is a cut-away view of the example of  FIG.  16    taken along the Y 3 -Y 3 ′ direction. 
     In describing  FIGS.  16  to  18   , reference will be made to the aforementioned embodiment of each configuration of the connector. 
     The base mold  130  and the top mold  110  are assembled to correspond to each other, and the assembly of the base mold  130  and the top mold  110  may be performed via the fastening means. To be specific, the assembly fastening part  170  of the top mold  110  may be inserted and fastened in accordance with the assembly insertion part provided in the base mold  130 . 
     The top mold  110  may be mounted and assembled on the upper part of the base mold  130  as the fastening protrusions  172  and  176  formed at the ends of the fastening support legs  171  and  175  of the assembly fastening part  170  engage with the locking jaws  182  and  186  formed in the fastening holes  181  and  185  of the assembly insertion part  180 . As the fastening protrusions  172  and  176  are engaged with the locking jaws  182  and  186  and are caught, the top mold  110  may be fixed so as not to be separated from the base mold  130 . 
     Since the space of each of the fastening holes  181  and  185  of the assembly insertion part  180  is provided wider than the cross-sectional length of each of the fastening support legs  171  and  175  of the assembly fastening part  170 , the assembly fastening part  170  may be slightly movable in the horizontal direction in the assembly insertion part  180 . 
     That is, the space length LB 1  of the fastening hole  181  formed in the middle of the left and right sides of the base body frame  131  of the assembly insertion part  180  may be formed wider than the width length LU 1  of the fastening support leg  171  formed at the middle of the left and right sides of the top body frame  111  of the assembly fastening part  170  by a predetermined value. The ratio of the difference between the space length LB 1  of the fastening hole  181  and the width length LU 1  of the fastening support leg  171  may be adjusted as needed. 
     In addition, the space length LB 2  of the fastening hole  185  formed in the middle of the upper and lower sides of the base body frame  131  of the assembly insertion part  180  may be formed wider than the width length LU 2  of the fastening support leg  175  formed at the middle of the upper and lower sides of the top body frame  111  of the assembly fastening part  170  by a predetermined value. As described above, the ratio of the difference between the space length LB 2  of the fastening hole  185  and the width length LU 2  of the fastening support leg  175  may be adjusted as needed. 
     As described above, the assembly fastening part  170  in the assembly insertion part  180  is able to move slightly in the left-right direction and the front-rear direction, and thus, when an external force is applied to the connector  100  due to various factors such as coupling with a counterpart connector, the top mold  110  may relatively move slightly in the left-right and front-rear directions with respect to the base mold  130  according to the external force while the base mold  130  is maintained fixed on the substrate S. 
     Moreover, as the top mold  110  moves in the left-right direction and the front-rear direction with respect to the base mold  130 , the pins of the pin array assembly  150  may also be bent and deformed. 
     A structure for relieving stress of a pin will be described in more detail with reference to  FIGS.  19 ,  20 A, and  20 B  together. 
     The middle portion of the pin  220  may be supported by the top mold  110 , and the lower end of the pin  220  may be supported by the base mold  130 . The top mold  110  and the base mold  130  may directly support the pin  220 . However, as shown in this embodiment, the middle portion of the pin  220  may be supported as the upper support  250  disposed on the middle portion of the pin  220  is inserted and mounted in the mounting slot  112  of the top mold  110 , while the lower end of the pin  220  may be supported as the lower support  270  disposed at the lower end of the pin  220  is inserted and mounted in the mounting groove  135  of the base mold  130 . 
     The lower end of the pin  220  is mounted on the substrate S via the base mold  130 , and the pins  220  may be mounted and fixed on the substrate S together with the base mold  130  by a surface mounting process (SMT) using solder balls  190  or the like. 
     Upon mounting pins on a connector, as a mounting material such as solder or a solder ball rides up the pin, the problem of change in impedance of the connector pin and a contact defect with a counterpart pin may occur. 
     However, in the present disclosure, as the lower end of the pin  220  is insert-molded and sealed by the lower support  270 , when the pin  220  is mounted, the rise of the mounting material on the pin may be primarily prevented by the lower support  270 . 
     In addition, as the middle portion of the pin  220  is insert-molded and sealed by the upper support  250 , when the pin  220  is mounted, the rise of the mounting material on the pin may be secondarily prevented by the upper support  250 . 
     As described above, by inserting the pin  220  to form the lower support  270  and the upper support  250  by a molding method, the corresponding areas are sealed, so that the rise of the mounting material may be effectively prevented. This makes it possible to ensure the high-speed signal transmission characteristics of the connector. 
     In addition, since the lower end of the pin  220  is supported by the base mold  130  and the base mold  130  is fixedly mounted to the substrate S, the lower end of the pin  220  may be stably maintained in a fixed state by the base mold  130 . 
     The top mold  110  assembled on the upper part of the base mold  130  may be relatively movable via the fastening means, and the middle portion of the pin  220  may be supported by the top mold  110 . 
     When an external force is applied to the connector  100  due to various factors such as coupling with a counterpart connector, the top mold  110  may relatively move slightly in the left-right and front-rear directions with respect to the base mold  130  according to the external force. 
     As the top mold  110  moves, the middle portion and upper end of the pin  220  supported by the top mold  110  are moved together with the top mold  110 , while the lower end of the pin  220  supported by the base mold  130  may be maintained in a fixed state since the base mold  130  is maintained in a fixedly mounted state on the substrate S. 
     As the top mold  110  moves relative to the base mold  130 , the body area of the pin  220  positioned between the upper support  250  and the lower support  270  may be bent and deformed according to the moving direction. 
     A cavity  195 , which is an empty space, may be provided between a portion where the upper support  250  is mounted in the top mold  110  and a portion where the lower support  270  is mounted in the base mold  130  to facilitate bending deformation of the pin  220  body area. 
     The body area  224  of the pin  220  is formed with the through hole  225 , so that it can be bent and deformed in the width direction. Since the body area  224  of the pin  220  is located in the cavity  195 , which is an empty space, there is no physical constraint during bending deformation in the left-right direction, which is the width direction, and thus, it is possible to effectively relieve stress caused by external force by means of bending deformation. 
     As such, as a portion of the pin  220  is bent and deformed due to the relative movement of the top mold  110  caused by the external force, the stress applied by the external force is resolved, so that the external force does not affect the lower end of the pin  220 . 
     That is, the top mold  110  and the base mold  130  are separated, and as the top mold  110  moves relatively by the external force and the body area of the pin  220  is bent and deformed accordingly to make the external force disappear while the base mold  130  maintains a fixed state, the external force does not reach the lower end of the pin  220 , and thus, it is possible to stably maintain the contact portion of the substrate S of the pin  220 . 
     An operation relationship of relieving the stress of a pin in a state in which the connector according to the present disclosure is mounted on a board will be described in more detail with reference to  FIGS.  21 A to  22 B . 
       FIGS.  21 A to  22 B  are cross-sectional views showing the relationship of stress relief operation of pins in the example of  FIG.  17   . 
     When an external force directed from the rear to the front is applied to the connector  100  while the connector  100  according to the present disclosure is mounted on the substrate S as shown in  FIG.  21 A , the top mold  110  may be moved from the rear to the front by the external force while the base mold  130  remains fixed to the substrate S as shown in  FIG.  21 B . 
     As the top mold  110  moves, the upper support  250  mounted in the top mold  110  moves together, and thus the head area  221  of the pin  220  is also moved. At this time, since the base mold  130  is fixed to the substrate S and does not move, the lower support  270  mounted on the base mold  130  also maintains a fixed state. 
     That is, as the lower support  270  mounted on the base mold  130  is fixed, and the upper support  250  mounted in the top mold  110  is relatively moved forward, a bending deformation occurs in the body area  224  of the pin  220  positioned therebetween. 
     The thickness direction of the pin  220  has an elastic force capable of bending deformation at a certain level, and the bending deformation occurs in the body area  224  of the pin  220  as the upper side of the body area  224  of the pin  220  is pushed from the rear to the front, and the lower side of the body area  224  of the pin  220  is maintained in a fixed state. 
     When an external force directed toward the front or rear is applied to the connector  100  as described above, as the body area  224  of the pin  220  is bent and deformed forward or backward, the stress caused by the external force is dissipated, so that the external force does not affect the solder balls  190  at the board contact portion of the pin  220 , thereby stably maintaining the board contact portion. In addition, the effect of transferring an external force to the substrate S through the pins  220  may be eliminated. 
       FIGS.  22 A and  22 B  are cross-sectional views showing the relationship of stress relief operation of pins in the example of  FIG.  18   . 
     When an external force directed from the left to the right is applied to the connector  100  while the connector  100  according to the present disclosure is mounted on the substrate S as shown in  FIG.  22 A , the top mold  110  may be moved from the left to the right by the external force while the base mold  130  remains fixed to the substrate S as shown in  FIG.  22 B . 
     As the top mold  110  moves, the upper support  250  mounted in the top mold  110  moves together, and thus the head area  221  of the pin  220  is also moved. At this time, since the base mold  130  is fixed to the substrate S and does not move, the lower support  270  mounted on the base mold  130  also maintains a fixed state. 
     That is, as the lower support  270  mounted on the base mold  130  is fixed, and the upper support  250  mounted in the top mold  110  is relatively moved forward, a bending deformation occurs in the body area  224  of the pin  220  positioned therebetween. 
     The through hole  235  is formed in the body area  224  of the pin  220  to adjust the width of the body area  224  of the pin  220 , so that bending deformation in the width direction may be possible. The bending deformation occurs in the body area  224  of the pin  220  as the upper side of the body area  224  of the pin  220  is pushed from the left to the right, and the lower side of the body area  224  of the pin  220  is maintained in a fixed state. 
     When an external force directed toward the left or right is applied to the connector  100  as described above, as the body area  224  of the pin  220  is bent and deformed to the left or right, the stress caused by the external force is dissipated, so that the external force does not affect the solder balls  190  at the board contact portion of the pin  220 , thereby stably maintaining the board contact portion. In addition, the effect of transferring an external force to the substrate S through the pins  220  may be eliminated. 
     The connector for high-speed signal transmission  100  according to the present disclosure is described as a hermaphroditic connector in which pins are capable of selectively pertaining a function of a receptacle or a plug. However, this is an embodiment, and the present disclosure is not limited thereto. The connector of the present disclosure may be a receptacle connector in which the pins are configured as receptacle pins or a plug connector in which the pins are configured as plug pins. 
     With the present disclosure as described above, it is possible to provide a connector capable of ensuring reliability for high-speed signal transmission characteristics and mounting stability on a board. 
     In particular, since pitches of connector pins may be maintained precisely by supporting a pin array with an upper support and a lower support using insert injection molding method, it is possible to solve the problem of mismatching due to pin pitch error when coupling connectors. 
     In addition, in the case of high-speed signal transmission connectors, a connector pin is easily bent or deformed even by a weak external force due to the reduced size and thickness of the pin, leading to a problem of pins being deformed or damaged when the pins are mounted on a connector body. This problem may be solved by means of a pin array assembly. 
     Moreover, by applying the insert injection molding method to seal the lower portion and the middle portion of the pin array, it is possible to solve the problem of impedance change of the connector pin and a contact defect with a counterpart pin due to the mounting material riding up the pin. 
     Furthermore, by removing the external force applied to the connector stemming from various factors such as coupling with the mating connector, the state of the board contact may be stably maintained. 
     In addition, the board contact area of the connector may be reliably protected, improving the reliability of the signal transmission characteristics of high-speed signal transmission connectors that require high data rates of 28 Gbps, 56 Gbps, or 112 Gbps or more. 
     Furthermore, it is possible to protect sensitive electronic components mounted on the board from external force by blocking the external force from being transferred to the board via the pins of the connector. 
     The above description is merely illustrative of the technical idea of the present disclosure, and various modifications and variations may be made by those skilled in the art to which the present disclosure pertains without departing from the essential characteristics of the present disclosure. Therefore, the embodiments described in the present disclosure are not intended to limit the technical spirit of the present disclosure, but to explain, and the technical spirit of the present disclosure is not limited by these embodiments. The protection scope of the present disclosure should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present disclosure.