JP2010278296A - Photoelectric conversion connector for substrates and electric connector for substrates - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photoelectric conversion connector for a substrate in which the displacement of a photoelectric conversion element relative to a connector housing is not generated by mechanical stress and heat stress at a connection terminal. <P>SOLUTION: A photoelectric conversion connector for a substrate includes a photoelectric conversion element 30 which is housed in a connector housing 10 and converts a light signal to an electric signal or the electric signal to the light signal and a connection terminal 20 which is fixed to the connector housing 10 and electrically connects the photoelectric conversion element 30 to an electric circuit of an outer substrate 5. The connection terminal 20 includes a fixing portion 22 pressed into the connector housing 10, a substrate-side connection portion 24 extended from one side of the fixing portion 22 to the outside of the connector housing 10 and connected with the outer substrate 5, and an element side connection portion 26 extended from the other side of the fixing portion 22 to the inside of the connector housing 10 and connected with the photoelectric conversion element 30. At least a portion of the substrate side connection portion 24 is bent. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a board connector mounted on a board on which an electric circuit is formed, and in particular, such a board connector, which performs photoelectric conversion between an optical signal and an electric signal. The present invention relates to a substrate photoelectric conversion connector on which an element is mounted, a substrate electrical connector for electrically connecting a terminal of a counterpart connector and an electric circuit formed on the substrate, and the like.

  A connector that is directly mounted on a board on which an electric circuit is formed, that is, a so-called board connector is generally known. Patent Document 1 describes such a substrate connector, which is a substrate photoelectric conversion connector on which a photoelectric conversion element (optical element module) that converts an optical signal and an electrical signal into each other is mounted.

  The photoelectric conversion connector for a substrate described in Patent Document 1 has a configuration in which a photoelectric conversion element is attached to a receiving cylinder formed in a connector housing via a sleeve, and a plurality of connection terminals ( (Lead frame) is formed to protrude. The substrate photoelectric conversion connector is mounted on the substrate by inserting the plurality of connection terminals through a fixing hole provided in the center of the land of the substrate and soldering to the land.

  However, the photoelectric conversion connector for a substrate as described in Patent Document 1 has a problem that the photoelectric conversion element is displaced due to heat generated by soldering when the photoelectric conversion connector for a substrate is mounted on the substrate. there were. That is, the heat accompanying soldering is transmitted to the connection terminal, a thermal stress is generated inside, the connection terminal is deformed, and the photoelectric conversion element provided integrally with the connection terminal is displaced. Furthermore, when the photoelectric conversion connector for a board is mounted on the board, the connector and the board are not accurately positioned. Therefore, when the connector is slightly tilted and inserted into the board and soldered to the board, etc. A load in the bending direction is applied to the connection terminal, and stress is generated inside the connection terminal. That is, the photoelectric conversion element may be displaced due to such mechanical stress. Due to such a positional shift of the photoelectric conversion element, there is a problem that a core shift occurs between the photoelectric conversion element and the optical fiber provided in the counterpart connector, and the amount of signal loss at the time of photoelectric conversion increases.

  In addition, the deformation of the connection terminal due to thermal stress or mechanical stress is not limited to the photoelectric conversion connector for the substrate on which the photoelectric conversion element is mounted, and other substrate connectors such as an electric wire and an electric circuit on the substrate are electrically connected. There is a problem with the electrical connector for the board for connection. In other words, if the connection terminal fixed to the board is deformed by stress, the displacement of the terminal part of the connection terminal mated with the mating connector occurs (running of the tip of the terminal part), which is necessary for fitting the connectors together. May increase the force and make assembly work difficult. When the amount of positional deviation is large, the terminals may not be fitted together, or the terminal portions of the connection terminals may be bent or crushed as a result of forced fitting.

JP 2002-82258 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a substrate photoelectric conversion connector that can absorb a positional shift of a photoelectric conversion element with respect to a connector housing due to thermal stress or mechanical stress generated in a connection terminal. It is another object of the present invention to provide an electrical connector for a board that can absorb a positional shift of a terminal portion with respect to a connector housing due to thermal stress or mechanical stress generated in a connection terminal.

  In order to solve the above problems, a photoelectric conversion connector for a substrate according to the present invention includes a photoelectric conversion element housed in a connector housing, and a connection terminal that electrically connects the photoelectric conversion element to an electric circuit of an external substrate. The connection terminal is press-fitted and fixed to the connector housing; a board-side connection part that extends from one of the fixing parts to the outside of the connector housing and is connected to the external board; and the fixing An element-side connecting portion that extends from the other side of the connector housing to the inside of the connector housing and is connected to the photoelectric conversion element, and the substrate-side connecting portion is bent at least at one place. It is what.

  In this case, an internal substrate for processing an electrical signal sent from the photoelectric conversion element and / or an electrical signal sent to the photoelectric conversion element is provided in the connector housing, and the element side via the internal substrate is provided. The connection part and the said photoelectric conversion element should just be connected.

  The board-side connection part is composed of a base end part extending from one of the fixing parts and a leg part fixed to the external board bent and extended from the base end part, The base end portion only needs to be in contact with the outer wall of the connector housing.

  The board electrical connector according to the present invention includes a connection terminal for electrically connecting a terminal of the mating connector to an electric circuit of the external board, and the connection terminal includes a fixing portion press-fitted into a connector housing, and the fixing A board-side connecting portion that extends from one end of the connector to the outside of the connector housing and is connected to the external board, and extends from the other end of the fixing portion to the inside of the connector housing, and is fitted with a terminal of the mating connector. A terminal-side connection portion connected to the terminal portion to be joined, and the gist of the substrate-side connection portion is that at least one of the connection portions is bent.

  In this case, an internal board for processing an electrical signal sent from the mating connector and / or an electrical signal sent to the mating connector is provided in the connector housing, and the terminal-side connection portion is provided via the internal board. The terminal part should just be connected.

  The board-side connecting portion is configured by a base end portion extending from one of the fixing portions and a leg portion fixed to the external substrate that is bent and extends from the base end portion, The base end portion only needs to be in contact with the outer wall of the connector housing.

  According to the photoelectric conversion connector for a substrate according to the present invention, between the substrate-side connection portion connected to the external substrate and the element-side connection portion connected to the photoelectric conversion element, fixing that is press-fitted and fixed to the connector housing. Therefore, the deformation of the board-side connecting part due to thermal stress or mechanical stress is absorbed by the fixing part. In addition, since the board-side connection portion is bent, deformation caused by thermal stress and mechanical stress is absorbed even in the bent portion. Therefore, the deformation of the board side connection portion is not transmitted to the element side connection portion, and the positional deviation of the element side connection portion, that is, the positional deviation of the photoelectric conversion element is suppressed, and the optical fiber connected to the photoelectric conversion element and the counterpart connector It can be set as the photoelectric conversion connector for substrates with a small connection loss in the connection surface.

  In this case, if the element side connection portion and the photoelectric conversion element are connected via the internal substrate, the terminal side connection portion may be deformed by the connection portion between the element side connection portion and the internal substrate or by the internal substrate itself. Since it is absorbed, an increase in connection loss at the connection surface between the photoelectric conversion element and the optical fiber is further suppressed. In other words, this configuration not only uses the internal substrate housed in the connector housing as an electrical member that constitutes an electric circuit for processing a transmitted signal, but also mechanically connects the connection terminal and the photoelectric conversion element. By using it as a bridging member, it is intended to further suppress positional deviation of the photoelectric conversion element.

  When the bent board-side connecting portion is composed of a base end portion extended from the fixed portion and a leg portion bent and extended from the base end portion, the base end portion is connected to the connector housing. If the outer wall is brought into contact with the outer wall, the deformation of the leg connected to the external board is not easily transmitted to the base end in contact with the outer wall of the connector housing, and the effect of preventing the positional deviation of the photoelectric conversion element is obtained. Further increase.

  Moreover, according to the electrical connector for a board according to the present invention, a connector is provided between the board-side connecting part connected to the board and the terminal-side connecting part connected to the terminal part fitted to the terminal of the counterpart connector. Since there is a fixing portion press-fitted into the housing, the deformation of the board-side connecting portion due to thermal stress or mechanical stress is absorbed by the fixing portion. In addition, since the board-side connection portion is bent, deformation caused by thermal stress and mechanical stress is absorbed even in the bent portion. Therefore, the deformation of the board-side connecting portion is not transmitted to the terminal-side connecting portion, and the positional deviation of the terminal-side connecting portion, that is, the positional deviation of the terminal portion is suppressed, thereby preventing the occurrence of poor fitting with the terminal of the counterpart connector. be able to.

  In this case, if the terminal-side connection portion and the photoelectric conversion element are connected via the internal substrate, the connection portion between the terminal-side connection portion and the internal substrate, or the deformation of the substrate-side connection portion due to the internal substrate itself is deformed. Since it is absorbed, the displacement of the terminal portion is further suppressed. In other words, such a configuration not only serves as an electrical member that constitutes an electric circuit for processing a transmitted signal, but also mechanically bridges the connection terminal and the terminal portion of the internal substrate housed in the connector housing. By using it as a member to be used, it is intended to further suppress the displacement of the terminal portion.

  When the bent board-side connecting portion is composed of a base end portion extended from the fixed portion and a leg portion bent and extended from the base end portion, the base end portion is connected to the connector housing. If the outer wall is brought into contact with the outer wall, the deformation of the leg connected to the external board is not easily transmitted to the base end portion in contact with the outer wall of the connector housing, and the effect of preventing the displacement of the terminal portion is further improved. Rise.

It is sectional drawing of the photoelectric conversion connector for substrates which concerns on one Embodiment of this invention. 1 is an external perspective view of a photoelectric conversion connector for a substrate according to an embodiment of the present invention. It is the external appearance perspective view which looked at the housing main body with which the photoelectric conversion connector for substrates shown in FIG. It is the external appearance perspective view which looked at the housing main body with which the photoelectric conversion connector for substrates shown in FIG. FIG. 4 is an enlarged view in the vicinity of part A in FIG. 3. FIG. 5 is an external perspective view of a connection terminal fixed to the housing body shown in FIGS. 3 and 4. It is sectional drawing of the photoelectric conversion connector for substrates which concerns on one Embodiment of this invention which does not mount an internal substrate. It is sectional drawing of the electrical connector for boards which concerns on one Embodiment of this invention.

  Hereinafter, a photoelectric conversion connector 1 for a substrate according to an embodiment of the present invention will be described in detail with reference to the drawings. Here, FIG. 1 is a cross-sectional view (including the external control board 5) of the substrate photoelectric conversion connector 1 according to the present embodiment, and FIG. 2 is an external perspective view. In addition, the upper and lower in the following description means the upper and lower in FIG. 1, the front end side means the fitting side with the other party connector 90 mentioned later (right side in FIG. 1), and the base end side is the opposite side. (Left side in FIG. 1). In the following description, the term “axial direction” refers to the horizontal direction in FIG.

  The board photoelectric conversion connector 1 is a connector mounted (mounted) on the external control board 5 (hereinafter referred to as the external board 5) shown in FIG. 1, and includes a connector housing 10 and a plurality of parts fixed to the connector housing 10. Connection terminal 20, photoelectric conversion element 30 having a function of converting an optical signal into an electrical signal, and a function of converting an electrical signal into an optical signal, and an internal control board 40 (hereinafter referred to as “internal control board”) fixed in connector housing 10. (Referred to as an internal substrate 40).

  The connector housing 10 is a synthetic resin member including a housing main body 12 and a lid 19 fixed to the housing main body 12. 3 and 4 are external perspective views of the housing body 12. 3 is an external perspective view of the housing body 12 as viewed from above, and FIG. 4 is an external perspective view of the housing body 12 as viewed from below (FIG. 4 (a) shows the connection terminals 20 and the interior. FIG. 4B shows a state in which the photoelectric conversion element 30 is fixed to the housing main body 12 to which the shield member 18 is fixed. FIG. 4B shows an internal substrate on the housing main body 12 to which the photoelectric conversion element 30 in FIG. 40 shows a fixed state.) FIG. 5 shows an enlarged view of the vicinity of part A in FIG.

  As shown in FIGS. 1 to 4, the housing body 12 includes a terminal fixing portion 13 to which the connection terminal 20 and the outer shell 50 are fixed, and a fitting portion 16 to be fitted to the mating connector 90. As is apparent from the figure, the terminal fixing portion 13 is larger in the width direction than the fitting portion 16.

  The terminal fixing portion 13 is surrounded by an upper wall 14 and a side wall 15 having a substantially rectangular cross section, and has an internal space 131 that opens downward. The upper wall 14 is provided with a plurality of fixing holes 122a penetrating from the outer surface to the inner space 131. In each of the plurality of fixing holes 122a, the connection terminal 20 is fixed by press-fitting.

  This point will be specifically described with reference to FIGS. 1 and 6 (an external perspective view of the connection terminal 20). The connection terminal 20 is a member formed in a substantially “U” shape (substantially “U” shape) such that a metal material is illustrated, and extends from a fixed portion 22 and one end of the fixed portion 22. A board-side connecting portion 24 provided and an element-side connecting portion 26 extended from the other end are provided.

  The fixing portion 22 is a portion that becomes a press-fitting allowance for the fixing hole 122a, and the size of the cross section of the fixing portion 22 is slightly larger than the cross section of the fixing hole 122a. If the size of the cross section of the fixing portion 22 relative to the size of the fixing hole 122a is a size that can secure the press-fit strength so that the connection terminal 20 does not easily fall out of the connector housing 10, it is particularly preferable. It is not limited.

  A board-side connecting portion 24 extends from one end of the fixing portion 22, specifically, one end located outside the upper wall surface 14 of the connector housing 10. The board-side connection portion 24 includes a base end portion 241 on the fixed portion 22 side and a leg portion 242 extending from the base end portion 241. The proximal end portion 241 extends from one end of the fixed portion 22 at a substantially right angle with the axial direction of the fixed portion 22. The leg portion 242 extends from one end of the base end portion 241 to be substantially perpendicular to the axial direction of the base end portion 241 and parallel to the fixed portion 22. Here, as shown in FIGS. 3 and 4, a groove 141 for accommodating the terminal is formed on the base end side of the upper wall 14 of the terminal fixing portion 13 and the base end side surface of the side wall 15. The groove portions 141 are provided in the same number as the connection terminals 20 (fixing holes 122a). The connection terminals 20 are fixed so that the respective board side connection portions 24 are located inside the groove portions 141 and do not protrude outward. .

  As shown in FIG. 1, the base end portion 241 is in contact with the outer wall of the connector housing 10 (the upper wall 14 of the terminal fixing portion 13) in the board side connection portion 24 positioned in the groove portion 141 in this way. On the other hand, the base 241 of the leg 242 that extends substantially perpendicularly from one end of the base end 241 is in contact with the outer wall of the connector housing 10. Specifically, a support protrusion 142 having a R-shaped cross section is formed on the upper portion of the side wall 15 (base end side surface) of the terminal fixing portion 13. This support protrusion 142 is used to support the connecting portion (bent portion) between the base end portion 241 and the leg portion 242 so that the connecting portion (bending portion) is not broken when a deformation occurs due to some external force applied to the leg portion 242. It is a configuration. The reason why only the bent portion is supported in this manner is that the leg portion 242 can be flexibly deformed with the connecting portion (bent portion) to the base end portion 241 as a fulcrum, and the base end portion. This is to prevent the deformation from being transmitted to 241 and to facilitate the insertion of the leg portion 242 into the fixing hole 5a formed in the external substrate 5 when the connector is mounted.

  The connection terminal 20 fixed to the connector housing 10 in this way has a part of the leg portion 242 protruding from the lower end surface of the connector housing 10. This protruding portion is inserted into the fixing hole 5a of the external substrate 5, and is electrically connected to an electric circuit formed on the external substrate 5 by soldering and mechanically connected to the external substrate 5 (base material of the external substrate 5). The By mechanical connection between the connection terminal 20 and the external substrate 5, the entire substrate photoelectric conversion connector 1 is mechanically connected to the external substrate 5 (mounted on the external substrate 5).

  The fitting portion 16 has an internal space 161 surrounded by an outer wall 17 having a substantially rectangular cross section. As can be seen from FIG. 4, a part of the lower surface of the outer wall 17 is open. As can be seen from FIGS. 1 to 3, a locking projection 171 that is locked to a locked portion (hole) (not shown) provided in the mating connector 90 is formed on the upper surface of the outer wall 17. Further, a guide 172 formed along the longitudinal direction of the connector is formed on the upper side surface. Further, the photoelectric conversion element 30 is fixed to the internal space 161 via the internal shield member 18.

  This point will be specifically described with reference to FIG. 5 which is a partially enlarged view of FIG. In the internal space 161, two protrusions 162 protruding from the inner surface of the fitting portion 16 are provided, and a first engagement groove 162a is formed in each of the two protrusions 162 in the axial direction. (Only one protrusion 162 and the first engagement groove 162a are shown in FIG. 5). In addition, two second engaging grooves 162b are formed in a direction perpendicular to the axial direction at the boundary portion between the terminal fixing portion 13 and the fitting portion 16 described above (see FIG. Only the engagement groove 162b of FIG.

  The inner shield member 18 is formed by bending a conductive member such as aluminum, for example, and includes a bottom surface 181 and two side walls 182 that are parallel to an axis that is erected from the bottom surface 181 (hereinafter, these two side walls are generically referred to as the inner shield member 18). Left and right side walls 182), and a base end side wall 183 that is erected from the bottom surface 181 and is substantially perpendicular to the axial direction. As shown in the figure, the inner shield member 18 has the left and right side walls 182 engaged with the first engagement grooves 162a, the both ends of the proximal side wall 183 engaged with the second engagement grooves 162b, and the bottom surface. 181 is brought into contact with the inner surface of the fitting portion 16 and fixed to a predetermined position in the internal space 161 of the fitting portion 16.

  A cutout 182 a having a predetermined width is formed in each of the left and right side walls 182 of the inner shield member 18. The photoelectric conversion element 30 is fixed at a predetermined position by press-fitting the main body 31 into the notch 182a. Further, two terminals 183 a are formed so as to protrude from the upper end surface of the base end side wall 183.

  The photoelectric conversion element 30 has a function of converting an optical signal sent from one optical fiber 91 a connected to the counterpart connector 90 into an electrical signal (light receiving function), and an electrical sent from the external board 5 or the internal board 40. A function of converting the signal into an optical signal and sending it to the other optical fiber 91b connected to the other connector (optical transmission function) (the photoelectric conversion element 30 is a so-called optical element module in which two elements are packaged). is there). Examples of the element that converts an optical signal into an electric signal include a photodiode. Moreover, a light emitting diode etc. can be illustrated as an element which converts an electrical signal into an optical signal. These elements are accommodated in the main body 31. A terminal 32 of an element housed in the main body 31 is formed so as to protrude from the main body 31.

  The internal board 40 is a board housed in the connector housing 10 and includes a width detail 41 having a relatively small width and a thick part 42 having a relatively large width. The width of the width detail 41 is substantially the same as the width of the internal space 161 of the fitting portion 16 in the connector housing 10, and the width of the wide portion 42 is the width of the terminal fixing portion 13 in the connector housing 10. The width of the internal space 131 is substantially the same. By using such an internal substrate 40, the size of the device (device having the external substrate 5) on which the substrate photoelectric conversion connector 1 is mounted can be reduced. That is, it is possible to reduce the size of the external substrate 5 by mounting a part of functions (signal processing function, etc.) that can be mounted on the external substrate 5 on the internal substrate 40 and storing them in the connector housing 10. it can.

  As shown in FIGS. 1 and 4, one side (width detail 41 side) of the internal substrate 40 is electrically connected to an electric circuit formed on the internal substrate 40 by soldering through a terminal 32 of the photoelectric conversion element 30. And mechanically connected to the internal substrate 40 (the base material of the internal substrate 40). In addition, the other side (the wide width portion 42 side) of the internal substrate 40 is inserted through the element side connection portion 26 of the connection terminal 20, and is electrically connected to the electric circuit formed on the internal substrate 40 by the solder, and the internal substrate. 40 (base material of the internal substrate 40) is mechanically connected. That is, an optical signal sent from one optical fiber 91a connected to the counterpart connector is converted into an electrical signal by the photoelectric conversion element 30 and output from the terminal 32, and passes through the electrical circuit of the internal substrate 40 (predetermined After processing (for example, signal amplification), the signal is output from the connection terminal 20 to the external substrate 5. In addition, the electrical signal generated by the external substrate 5 passes through the electrical circuit of the internal substrate 40 from the connection terminal 20 (predetermined processing (for example, signal amplification)) and is sent from the terminal 32 to the photoelectric conversion element 30. Is converted into an optical signal and transmitted to the optical fiber 91b on the other side of the counterpart connector.

  Further, the terminal 183 a of the internal shield member 18 is also fixed to the internal substrate 40. That is, the terminal 183a of the internal shield member is electrically connected to an electric circuit formed on the internal substrate by soldering and mechanically connected to the internal substrate 40 (base material of the internal substrate 40), and through the electric circuit Connected to ground. With this configuration, the photoelectric conversion element 30 and the portion formed in the width detail 41 of the electric circuit formed on the internal substrate 40 are covered with the internal shield member 18, and noise from the outside to the portion is covered. The influence of is reduced.

  As shown in FIG. 1, a lid 19 is fixed to the housing body 12 of the connector housing 10 so as to cover the internal substrate 40 mechanically connected to the terminals 32 of the photoelectric conversion element 30 and the like. The lid 19 serves to protect the electric circuit formed on the internal substrate 40, the mounted elements, and the like.

  On the other hand, as shown in FIGS. 1 and 2, the outer periphery of the terminal fixing portion 13 of the connector housing 10 is covered with an external shield member 50. The outer shield member 50 is formed to be slightly larger than the terminal fixing portion 13 and has a rectangular parallelepiped shape with one (lower) opening. A snap-fit terminal 51 protrudes from the opened lower end surface. The external shield member 50 is inserted into the external substrate 5 while elastically deforming the snap-fit terminals 51, and is electrically connected to the electric circuit formed on the external substrate 5 by soldering and the external substrate 5 (base material of the external substrate 5). And mechanically connected. The external shield member 50 is connected to the ground through an electric circuit formed on the external substrate 5. By adopting such a configuration, in the electric circuit formed on the internal substrate 40, the portion formed in the thick portion 42 is covered with the external shield member 50, and the influence of external noise on the portion is reduced. .

  The counterpart connector 90 is slid until the locking projection 171 is locked to the locked portion (not shown) while being guided by the guide 172 with respect to the photoelectric conversion connector 1 for a substrate having the above-described configuration, It is fitted with the substrate photoelectric conversion connector 1 according to the present embodiment so as to cover the fitting portion 16. Thereby, optical fiber 91a, 91b with which the other party connector 90 is provided, and the photoelectric conversion element 30 with which the board | substrate photoelectric conversion connector 1 is provided are faced | matched, and both are optically connected.

  The configuration of the substrate photoelectric conversion connector 1 according to the embodiment of the present invention has been described above. However, according to the substrate photoelectric conversion connector 1, the following operational effects are achieved.

  As described above, the connection terminal 20 included in the substrate photoelectric conversion connector 1 has a leg portion 242 inserted through the external substrate 5, electrically with the electric circuit formed on the external substrate 5 by soldering, and the external substrate 5. Since it is mechanically connected to the (base material of the external substrate 5), the heat of the molten solder is transmitted to the connection terminal 20 when the connection terminal 20 is soldered. In particular, since the legs 242 to be soldered have a high temperature, thermal stress is generated therein. Further, when the connector is inclined when the photoelectric conversion connector 1 for substrates is mounted, a load in the bending direction is applied to the leg portion 242, and mechanical stress is generated inside the leg portion 242. However, according to the photoelectric conversion connector 1 for a substrate according to the present embodiment, the deformation of the leg portion 242 due to the stress is not transmitted to the photoelectric conversion element 30, and the positional deviation of the photoelectric conversion element 30 with respect to the connector housing 10 is not caused. Is prevented. Therefore, the connection loss at the connection surface between the photoelectric conversion element 30 and the optical fiber does not increase.

  In the photoelectric conversion connector 1 for a substrate according to this embodiment, the deformation of the leg portion 242 is not transmitted to the photoelectric conversion element 30 for the following reasons 1) to 3). 1) The connection terminal 20 includes a fixed portion 22, an element side connection portion 26 protruding from the fixed portion 22 to the inside of the connector housing 10, and a board side connection portion 24 protruding from the fixed portion 22 to the outside of the connector housing 20. However, since the fixing portion 22 is press-fitted into the connector housing 20, the deformation of the leg portion 242 of the board side connection portion 24 is absorbed by the fixing portion 22 and is not easily transmitted to the element side connection portion 26. Further, since the base end portion 241 and the leg portion 242 are bent at a substantially right angle in the board side connecting portion 24, the deformation of the leg portion 242 is absorbed by the bent portion, and the base end portion 241 and the fixing portion 22 are absorbed. It is difficult to be transmitted to the element side connection portion 26 located on the more distal end side. In order to enhance the effect of absorbing this deformation in the board-side connection part 24, the length of the board-side connection part 24 should be as long as possible. This is because the longer the length of the board-side connecting portion 24 is, the smaller the deformation of the leg portion 242 is on the fixed portion 22 side. In particular, the longer the leg 242 to which heat or external force is actually applied, the better. Specifically, the length of the leg portion 242 may be longer than at least the fixed portion 22 or the base end portion 241 that is the press-fitting allowance.

  2) In addition, the element side connection portion 26 is not directly connected to the photoelectric conversion element 30 but mechanically connected to the photoelectric conversion element 30 via the internal substrate 40. That is, even if the deformation of the leg portion 242 is transmitted to the element side connection portion 26, the deformation is absorbed by the connection portion between the element side connection portion 26 and the internal substrate 40 or the internal substrate 40 itself. That is, in this configuration, the internal substrate 40 that is an electrical member provided to reduce the size of the external substrate 5 is also used as a member that mechanically bridges the connection terminal 20 and the photoelectric conversion element 30. Thus, the positional shift of the photoelectric conversion element 30 is to be prevented.

  3) Since the base end 241 of the board-side connecting portion 24 of the connection terminal 20 is in contact with the outer wall of the connector housing 10 (the upper wall 14 of the terminal fixing portion 13), the deformation of the leg portion 242 It is difficult to be transmitted to the base end portion 241 that is in contact with the outer wall of the housing 10. In order to enhance this effect, the base end portion 241 may be formed as thick as possible so that the deformation of the base end portion 241 does not deform. As shown in FIG. 1, it is preferable to form it thicker than the fixing portion 22 and the leg portion 242.

  For the reasons 1) to 3) above, in the photoelectric conversion connector 1 for substrates, the positional shift of the photoelectric conversion element 30 is prevented. However, the effect of preventing the positional deviation of the photoelectric conversion element 30 is that the effect is enhanced if all of these configurations are employed, and is not necessarily obtained unless all the configurations are employed. For example, as shown in FIG. 7, when the internal substrate 40 is not used, the element side connection portion 26 of the connection terminal 20 and the terminal 32 of the photoelectric conversion element 30 may be integrally formed. Even in such a configuration, the deformation of the leg portion 242 is absorbed by the fixing portion 22 press-fitted into the connector housing 10 or the board-side connecting portion 24 having a bent portion, so that the leg portion 242 is deformed as compared with the conventional board connector. An excellent effect of preventing displacement of the photoelectric conversion element 30 can be obtained.

  Further, since the connection terminal 20 provided in the substrate photoelectric conversion connector 1 according to the present embodiment is formed in a substantially “U” shape (substantially “U” shape), as shown in FIG. It can be easily fixed by inserting it into the fixing hole 122a from the upper surface of the housing 10. Further, the board-side connection portion 24 of the connection terminal 20 fixed in this way is disposed in the groove portion 141 and does not protrude outward from the outer edge of the connector housing 10, so that the board-side connection is performed during assembly work of the connector. Generation | occurrence | production of the malfunction that the part 24 bends is prevented.

  As mentioned above, although the structure and effect of the photoelectric conversion connector 1 for substrates according to the present embodiment have been described, the technical idea of the photoelectric conversion connector 1 for substrates also applies to the connector for substrates on which the photoelectric conversion element 30 is not mounted. Applicable. In other words, any board connector mounted on a board is applicable regardless of the type. For example, the present invention can also be applied to a board electrical connector used for electrically connecting an electric wire connected to a counterpart connector and an electric circuit formed on an external board. Hereinafter, an example will be briefly described.

  FIG. 8 is a cross-sectional view schematically showing the board electrical connector 2 according to one embodiment of the present invention. The board electrical connector 2 includes a connector housing 60, a connection terminal 70 fixed to the connector housing 60 by press fitting, a terminal portion 80, and an internal board 85 interposed between the connection terminal 70 and the terminal portion 80. Is provided. The connector housing 60 and other members are the same as those in the above embodiment, and thus the description thereof is omitted.

  The connection terminal 70 includes a fixing portion 72 that is press-fitted into the connector housing 60, a board-side connection portion 74 that extends from one end of the fixing portion 72 outside the connector housing 60, and a fixing portion 62 that is inside the connector housing 60. It consists of a terminal side connection part 76 extended from the other end. The board-side connection portion 74 of the connection terminal 70 includes a base end portion 741 that is bent at a substantially right angle from the fixing portion 72 and a leg portion 742 that is bent at a substantially right angle from the base end portion 741 and is parallel to the fixing portion 72. Have

  The terminal portion 80 is a male type that fits into a female terminal portion provided on a mating connector (not shown). The internal board 85 processes an electrical signal sent from the counterpart connector or an electrical signal sent to the counterpart connector (for example, signal amplification).

  With such a configuration, even if the leg portion 742 of the connection terminal 70 is deformed, the deformation is not transmitted to the terminal portion 80 as in the above embodiment. That is, 1) a fixing portion 72 press-fitted into the connector housing 60, a bent portion provided in the board side connection portion 74, 2) a connection portion between the terminal side connection portion 76 and the internal substrate 85, and the internal substrate 85 itself. 3) Since the deformation of the leg portion 742 is absorbed by the base end portion 741 in contact with the outer wall of the connector housing 60, the terminal portion 80 is not displaced relative to the connector housing 60. Therefore, it is possible to avoid occurrence of poor fitting with the counterpart connector (for example, inability to fit the terminal, or damage or crushing of the terminal due to forced fitting of the terminal).

  In the board electrical connector 2, when the internal board 85 is not used, the terminal side connecting part 76 and the terminal part 80 may be configured integrally. Even in such a configuration, the deformation of the leg portion 742 is absorbed by the fixing portion 72 press-fitted into the connector housing 60 and the board-side connecting portion 74 having a bent portion. Thus, an excellent effect of preventing displacement of the terminal portion 80 can be obtained.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

  For example, in the substrate photoelectric conversion connector 1 according to the embodiment, the photoelectric conversion element 30 mounted on the connector housing 10 includes an element that converts an optical signal into an electric signal and an element that converts an electric signal into an optical signal. Although what is called an optical element module provided was demonstrated, it is not restricted to such a structure. The present invention can also be applied to a connector (a connector corresponding to either reception or transmission) on which only a photoelectric conversion element having one of the functions is mounted.

DESCRIPTION OF SYMBOLS 1 Substrate (photoelectric conversion) connector 5 External (control) substrate 10 Connector housing 20 Connection terminal 22 Fixing part 24 Substrate side connection part 241 Base end part 242 Leg part 26 Element side connection part 30 Photoelectric conversion element 40 Internal (control) board 60 connector housing 70 connection terminal 72 fixing part 74 board side connection part 741 base end part 742 leg part 76 terminal side connection part 80 terminal part 85 internal board

Claims (6)

A photoelectric conversion connector for a substrate, comprising: a photoelectric conversion element housed in a connector housing; and a connection terminal for electrically connecting the photoelectric conversion element to an electric circuit of an external substrate,
The connection terminal includes a fixed portion that is press-fitted and fixed to the connector housing, a board-side connection portion that extends from one of the fixed portions to the outside of the connector housing and is connected to the external substrate, and the fixed portion Extending from the other side to the inside of the connector housing, and having an element side connection portion connected to the photoelectric conversion element,
The substrate-side connection portion is bent at least at one place, wherein the substrate-side connection portion is a photoelectric conversion connector for a substrate.   In the connector housing, an internal substrate for processing an electrical signal sent from the photoelectric conversion element and / or an electrical signal sent to the photoelectric conversion element is provided, and the element-side connecting portion is interposed through the internal substrate. The photoelectric conversion connector for a substrate according to claim 1, wherein the photoelectric conversion element is connected.   The board-side connecting portion includes a base end portion extending from one of the fixing portions, and a leg portion fixed to the external substrate that is bent and extends from the base end portion. The photoelectric conversion connector for a substrate according to claim 1, wherein an end portion is in contact with an outer wall of the connector housing. An electrical connector for a board comprising a connection terminal for electrically connecting a terminal of a mating connector with an electrical circuit of an external board,
The connection terminal includes a fixed portion press-fitted into a connector housing, a board-side connection portion that extends from one end of the fixed portion to the outside of the connector housing and is connected to the external substrate, and the other end of the fixed portion Extending from the inside of the connector housing, and having a terminal-side connecting portion connected to a terminal portion that fits with a terminal of a mating connector,
The board-side connection portion is bent at least at one place.   In the connector housing, an internal board for processing an electrical signal sent from the mating connector and / or an electrical signal sent to the mating connector is provided, and the terminal side connecting portion and the terminal section are provided via the internal board. And the board electrical connector according to claim 4. The board-side connecting portion includes a base end portion extending from one of the fixing portions, and a leg portion fixed to the external substrate that is bent and extends from the base end portion. 6. The board electrical connector according to claim 4, wherein an end portion is in contact with an outer wall of the connector housing.

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