JP2019140095A - Receptacle connector and tab terminal - Google Patents

Abstract

To provide a receptacle connector having a tab terminal that can be smoothly attached to and detached from a mating connector, and in which stable contact is obtained with less sag even after attachment and detachment have been performed repeatedly.SOLUTION: A receptacle connector RC placed on the mounting surface of one circuit board and into which a plug connector PG placed on the mounting surface of another circuit board is inserted and mated in the direction perpendicular to the mounting surface as the connector insertion and removal direction includes a housing 10 formed in a substantially rectangular parallelepiped thin shape, a plurality of signal terminals 30 held in the housing 10, and a tab terminal 50 mounted on the outside of both ends of the housing 10 in the longitudinal direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a receptacle connector mounted on a circuit board and a tab terminal used for the receptacle connector.

  Conventionally, an electrical connector (BtoB connector) has been used to connect circuit boards to each other. The BtoB connector is composed of a receptacle connector mounted on one circuit board and a plug connector mounted on the other circuit board. By inserting and fitting the plug connector into the receptacle connector, the circuit boards are connected to each other. It is designed to be electrically connected.

  Here, the configuration of the conventional electrical connector (receptacle connector and plug connector) will be briefly described with reference to FIGS.

FIG. 13 is a perspective view of a conventional electrical connector, (a) is a perspective view of a receptacle connector, and (b) is a perspective view of a plug connector, both of which have the mating direction on the upper side. Shown in posture.
FIG. 14 is a schematic diagram for explaining tab terminals to be attached to both end sides of the housing of the conventional receptacle connector, and (a) is a schematic view of the tab terminals as viewed from diagonally above. (B) is the schematic diagram which looked at the tab terminal from the upper part.
FIG. 15 is a schematic diagram for explaining the tab terminals attached to both ends of the housing of the conventional receptacle connector, and (a) is a schematic view of the tab terminals as viewed from the front. (B) is the schematic diagram which looked at the tab terminal from back.

  The receptacle connector 200 and the plug connector 300 shown in FIG. 13 are arranged on the mounting surfaces of different circuit boards (not shown), and are used for connecting the circuit boards. The receptacle connector 200 and the plug connector 300 have a direction perpendicular to the surface of each circuit board as the insertion / extraction direction.

The above-described receptacle connector 200 includes a housing 210 (resin housing 210) formed in a thin, substantially rectangular parallelepiped shape, and a plurality of pieces held in two rows and in an array by the housing 210 with the longitudinal direction of the housing 210 as a terminal array direction. Signal terminals (metal signal terminals) 230 and tab (TAB) terminals (metal tab terminals) 250 that are held so as to cover the upper ends of both ends of the housing 210.
The tab terminal 250 has a role of fixing both ends of the receptacle connector 200 to the circuit board by soldering, and a tab terminal 350 of the mating plug connector 300 is inserted into the tab terminal 350. It plays a role of electrical connection.
Note that the tab terminal 250 is formed with a size larger than that of the signal terminal 230 so that a current larger than the current flowing through the signal terminal 230 can flow. For example, the tab terminal 250 is used as a connection terminal for power supply.

As shown in FIG. 13A, the housing 200 has a bottom wall 211 having a bottom surface parallel to the mounting surface of the circuit board, and rises upward from the bottom wall 211 and an array of signal terminals 230. A rectangular island-shaped central protrusion 215 extending in the direction, and a frame-shaped peripheral wall 212 that stands upward from the outer periphery of the bottom wall 211 and surrounds the central protrusion 215. The peripheral wall 212 includes a pair of side wall portions 212a extending in the arrangement direction of the signal terminals 230, and a pair of end wall portions 212b that connect ends of the pair of side wall portions 212a.
An annular space opening upward is formed between the central protrusion 215 and the peripheral wall 212, and this annular space corresponds to a corresponding fitting portion (square frame-shaped peripheral wall of the mating plug connector 300. 312).

Further, as shown in FIG. 13A, the tab terminal 250 is attached so as to cover the upper ends of the circumferential wall 212 constituting the housing 100 in the longitudinal direction and on both sides. Specifically, as shown in FIGS. 14 and 15, the tab terminal 250 includes a base portion 251 disposed in contact with the upper end side of the end wall portion 212 b and a right angle from both sides of the base portion 251 toward one side (front side). It has a pair of bent arm portions 252, a hook portion 253 provided at the upper end of the base portion 251, and hook portions 254 respectively provided on the arm portion 252. The hook portion 253 is attached so as to cover the upper end portion of the end wall portion 212 b of the housing 100, and the hook portion 254 is attached so as to be exposed to the side wall portion 212 a of the housing 100. In addition, each of the pair of arm portions 252 is provided with an elastic contact piece 255 having an inverted U shape at the upper end portion on the free end side.
The tab terminals 350 provided at both ends of the plug connector 300 are held between the pair of elastic contact pieces 255 provided on the pair of arm portions 252 respectively.
The pair of arm portions 252 has leg portions 252a (see FIG. 15A) at the lower ends thereof, and the leg portions 252a are soldered to the mounting surface of the circuit board. (Leg part 252a is a soldering part).

On the other hand, as shown in FIG. 13B, the plug connector 300 includes a resin housing 310 and signal terminals (metals) held in two rows / array by the housing 310 with the longitudinal direction of the housing 310 as the terminal array direction. Signal terminal) 330 and tab (TAB) terminals (metal tab terminals) 350 attached to both ends of the housing 310.
The tab terminal 350 serves to fix both ends of the plug connector 300 to the circuit board by soldering, and is electrically connected to the tab terminal 250 of the counterpart receptacle connector 200. Have a role to do.

The housing 310 includes a square frame-shaped peripheral wall 312 and a bottom wall 311, and the square frame-shaped peripheral wall 312 and the peripheral wall surrounding the island-shaped central protrusion 215 of the receptacle connector 200. It fits in the space formed between the two.
Then, when the plug connector 300 is inserted and fitted into the receptacle connector 200, the signal terminal 230 of the receptacle connector 200 contacts and is electrically connected to the corresponding signal terminal 330 of the plug connector 300, and the receptacle connector 200 The tab terminal 350 of the plug connector 300 is fitted and electrically connected to the tab terminal 250 of 200.

  In addition, in the electrical connector (BtoB connector) for connecting circuit boards as described above, a tab terminal is arranged and attached so as to cover the upper ends of both ends of the resin housing, and the current flowing through the signal terminal For example, Japanese Patent Application Laid-Open No. H10-228707 discloses a device that can pass a large current.

Japanese Patent No. 5972855

By the way, the above-described conventional receptacle connector employs a configuration in which both ends of the resin housing are arranged so that the tab terminals are covered on the upper end side of the housing, and the tab terminals are attached to the housing. .
However, in the above configuration, the thickness dimension of the tab terminal (thickness dimension in a direction perpendicular to the surface of the circuit board) is limited, and there is a problem that the tab terminal cannot be designed into a free shape. For this reason, the tab terminal of the above-described conventional receptacle connector is provided with a sufficiently large size in the spring portion (for example, the elastic contact piece 255 shown in FIG. 15) that contacts the contact portion of the mating connector. It was not possible, and the spring part was a hard spring that was not supple. As a result, there has been a problem that the conventional receptacle connector cannot be smoothly attached to and detached from the mating connector, and the spring portion may be bent by a slight displacement and stable contact may not be obtained. In particular, since the receptacle connector mounted on the circuit board used in mobile devices such as smartphones is very small, the above-mentioned problem appears remarkably.
As shown in FIG. 15A, the above-described conventional receptacle connector includes a portion (elastic contact piece 255) that is in electrical contact with the mating side and a soldering portion (a leg portion at the lower end of the arm portion 252). Since 252a) is close, the solder travels through the terminal and gets on the contact portion, resulting in a decrease in contact performance.

  The present invention has been made in view of the above-mentioned problems, and its purpose is a receptacle connector mounted on a circuit board, which can be smoothly attached to and detached from the mating connector and repeatedly attached and detached. An object of the present invention is to provide a receptacle connector provided with a tab terminal that is less likely to sag and provides a planned contact. Moreover, this invention is providing the tab terminal mounted in the said receptacle connector.

  The present invention made to solve the above problems is arranged on the mounting surface of another circuit board, with the direction perpendicular to the mounting surface being the connector insertion / extraction direction. A receptacle connector into which a plug connector is inserted and fitted and connected, and a housing formed in a thin, substantially rectangular parallelepiped shape, and a plurality of signal terminals held by the housing with the longitudinal direction of the housing as a terminal arrangement direction And a tab terminal arranged and attached to each of the housing in the longitudinal direction and outside the both ends.

  Thus, the tab terminal of the present invention is not configured to be placed and attached to the upper side of both ends of the resin-made housing like the above-described conventional tab terminals, but is arranged outside the both ends of the housing. It is configured to be attached. According to this configuration, the thickness dimension of the tab terminal (thickness dimension in the direction perpendicular to the surface of the circuit board) is not limited, and the tab terminal can be designed in a free shape. Therefore, according to the present invention, the spring portion of the tab terminal that comes into contact with the contact portion of the mating connector can be used having a sufficiently large size, and as a result, according to the tab terminal of the present invention. As a result, it is possible to smoothly attach and detach the mating connector, and it is possible to obtain a planned contact that is unlikely to sag even after repeated attachment and detachment. Further, the tab terminals are attached to the outside of the longitudinal direction and both ends of the housing, so that the temperature rising heat at the time of current application can be reduced as compared with the conventional configuration “attached to the upper side of the housing (see FIG. 13)”. Heat dissipation is improved. That is, according to the present invention, a receptacle connector having better heat dissipation performance than that of the prior art is provided.

  The tab terminal extends in the width direction of the housing, and is located above the bottom surface portion disposed on the mounting surface of the one circuit board and the end portions on both sides in the width direction of the bottom surface portion. When the plug connector is inserted, at least one pair of the elastic contact pieces abuts on a connection portion provided on the plug connector. It is desirable that the connector is elastically displaced in the width direction so as to sandwich the connecting portion provided in the plug connector.

Since the tab terminal of the present invention is not configured to cover both ends of the housing, it is possible to provide a bottom surface portion to be disposed on the mounting surface of the circuit board. Furthermore, in the present invention, at least a pair of elastic contact pieces that contact the connection portion of the plug connector are configured to rise and extend upward from both sides and end portions of the bottom surface portion. According to this configuration, the spring portion (elastic contact piece) of the tab terminal is designed to have a larger length than the spring portion of the conventional tab terminal (for example, the elastic contact piece 255 shown in FIG. 15). As compared with the prior art, the spring portion can be elastically displaced flexibly.
Further, in the present invention, since at least a pair of elastic contact pieces are connected by the bottom surface portion (because the metal (bottom surface portion) connecting the elastic contact pieces is arranged), the conventional tab terminal spring is provided. Compared with the part, the spring constant is increased, and it does not sag with a slight displacement, and a stable contact can be obtained.

Further, the elastic contact piece rises from both ends in the width direction and rises upward and bends in an inverted U-shape from the upper end of the standing part in the width direction and inward. It is preferable that a contact portion that contacts the connection portion provided in the plug connector is formed on the inner side of the bent portion.
By configuring the elastic contact piece in this manner, the connection portion provided on the plug connector can be held with a large spring force, and a stable connection can be obtained and it can withstand repeated attachment and detachment.

  In addition, a guide piece is formed at a width direction / center portion of the bottom surface portion and at a length direction / outside end portion of the housing, and the guide piece is formed in the width direction / center portion of the bottom surface portion. A first horizontal piece extending in parallel toward the outside from the first horizontal piece, a first vertical piece rising from an end of the first horizontal portion upward at a substantially right angle, and the first vertical piece It is desirable to have a bent piece portion that is bent in an inverted U shape outward from the upper end of the piece portion and extends downward.

  With this guide piece, when the plug connector is fitted to the receptacle connector, the corresponding connecting portion of the tab terminal of the plug connector is positioned at a position between the pair of elastic contact pieces of the tab terminal of the receptacle connector. Can be called. That is, the guide piece can smoothly engage the receptacle connector and the plug connector.

Further, an attachment piece is formed at an end portion in the width direction and the center portion of the bottom surface portion and in the length direction and inside of the housing, and the attachment piece is attached to an end portion in the longitudinal direction of the housing. It is desirable that
As described above, the present invention is not a “configuration to be mounted so as to cover both ends of the resin housing” like the conventional tab terminal. A large space can be taken. As a result, in the present invention, the spring portion (elastic contact piece) of the tab terminal can be designed to have a larger dimension than the spring portion of the conventional tab terminal.

  In addition, the present invention provides a plug connector that is arranged on the mounting surface of one circuit board and is inserted and fitted into a mounting surface of another circuit board with the direction perpendicular to the mounting surface as the connector insertion / extraction direction. Tab terminals attached to both ends of the housing of the receptacle connector to be connected together, and extending in the width direction of the housing, and disposed on the mounting surface of the one circuit board; and A pair of elastic contact pieces extending upward from both ends in the width direction. When the plug connector is inserted, the pair of elastic contact pieces A contact portion provided on the plug connector abuts on the connection portion and is elastically displaced in the width direction so as to sandwich the connection portion provided on the plug connector.

According to the present invention, a receptacle connector mounted on a circuit board that can be smoothly attached to and detached from the mating connector, and that the contact that has been planned is obtained even if it is repeatedly attached and detached. A receptacle connector with a tab terminal can be provided. Further, according to the present invention, it is possible to provide a tab terminal to be mounted on the receptacle connector.
In addition, according to the present invention, it is possible to provide a receptacle connector having better heat dissipation performance and a tab terminal mounted on the receptacle connector as compared with the prior art.

It is a perspective view of the receptacle connector of the embodiment of the present invention. It is the schematic diagram for demonstrating the receptacle connector of embodiment of this invention, (a) is the schematic diagram which showed the upper surface of the receptacle connector, (b) is the schematic diagram which showed the side surface of the receptacle connector. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic diagram for demonstrating the receptacle connector of embodiment of this invention, (a) is the schematic diagram which showed the edge part of the longitudinal direction side of a receptacle connector, (b) is the tab terminal and part of a receptacle connector It is the schematic diagram which showed the cross section. It is a perspective view of the tab terminal provided in the receptacle connector of embodiment of this invention. It is a schematic diagram for demonstrating the tab terminal provided in the receptacle connector of embodiment of this invention, (a) is the schematic diagram which showed the front-end part of the tab terminal, (b) shows the upper surface of a tab terminal. (C) is the schematic diagram which showed the rear-end part of the tab terminal, (d) is the schematic diagram which showed the side part of the tab terminal. It is the schematic diagram which showed the cross section of the tab terminal provided in the receptacle connector of embodiment of this invention, (a) is a schematic diagram which shows the cross section of the width direction and center part of a tab terminal, (b) is a tab It is a schematic diagram showing a cross section of the length direction and the center of the terminal. It is a perspective view of the plug connector of the embodiment of the present invention. It is the schematic diagram for demonstrating the plug connector of embodiment of this invention, (a) is the schematic diagram which showed the upper surface of the plug connector, (b) is the schematic diagram which showed the side surface of the plug connector. It is the perspective view of the tab terminal of the plug connector of embodiment of this invention, (a) is the perspective view which looked at the tab terminal from the back side, (b) is the perspective view which looked at the tab terminal from the front side. . It is a schematic diagram for demonstrating the tab terminal of the plug connector of embodiment of this invention, (a) is a schematic diagram which shows the rear surface of a tab terminal, (b) is a schematic diagram which shows the side surface of a tab terminal. (C) is a schematic diagram which shows the front surface of a tab terminal, (d) is a schematic diagram which shows the upper surface of a tab terminal, (e) is a schematic diagram which shows the lower surface of a tab terminal. It is a schematic diagram showing the state of fitting the tab terminal of the plug connector to the tab terminal of the receptacle connector of the embodiment of the present invention, and (a) is a schematic view of the state seen from above after fitting. (B) is the schematic diagram which fitted and looked at the state from back, (c) is the schematic diagram which fitted and looked at the state from the side. It is the schematic diagram which showed the cross section in the state which fitted the tab terminal of the plug connector to the tab terminal of the receptacle connector of this embodiment. It is a perspective view of the electrical connector of a prior art, (a) is a perspective view of a receptacle connector, (b) is a perspective view of a plug connector. It is a schematic diagram for demonstrating the tab terminal with which the both ends of the housing of the receptacle connector of a prior art are mounted | worn, (a) is the schematic diagram which looked at the tab terminal from diagonally upward, (b) is a tab terminal It is the schematic diagram which looked at from the upper part. It is the schematic diagram for demonstrating the tab terminal with which the both ends of the housing of the receptacle connector of a prior art were mounted | worn, (a) is the schematic diagram which looked at the tab terminal from the front, (b) is the tab terminal It is the schematic diagram which looked at from back.

Hereinafter, the configuration of the electrical connector (receptacle connector RC and plug connector PC) of the embodiment of the present invention will be described with reference to the drawings.
Here, the receptacle connector RC (see FIG. 1) and the plug connector PC (see FIG. 7) of the present embodiment are respectively arranged on mounting surfaces of different circuit boards (not shown), and the circuit boards are connected to each other. Used for. Note that the receptacle connector RC and the plug connector PC both have a direction perpendicular to the surface of each circuit board.

  The present invention is characterized by the configuration of the receptacle connector RC (particularly the tab terminal 50), and the plug connector PC is realized by the configuration of the existing technology. Therefore, in the following, the configuration of the receptacle connector RC (particularly, the tab terminal 50) will be mainly described, and the description of other configurations will be simplified.

  First, the configuration of the receptacle connector RC will be described with reference to FIGS.

  As shown in the figure, the receptacle connector RC has a thin housing 10 (resin housing 10) formed in a substantially rectangular parallelepiped shape and is held in two rows by the housing 10 with the longitudinal direction of the housing 10 as a terminal arrangement direction. A plurality of signal terminals (metal signal terminals) 30 and tab terminals (metal tab terminals) 50 which are arranged and attached to the longitudinal direction and outside both ends of the housing, respectively. .

The tab terminal 50 has a role of fixing both ends of the receptacle connector RC to the circuit board by soldering and fixing the tab terminal 150 of the mating plug connector PG to the circuit board, as in the above-described conventional technology. It is fitted and plays a role of being electrically connected to the tab terminal 150.
The tab terminal 50 is formed with a size larger than that of the signal terminal 30 so that a current larger than a current flowing through the signal terminal 30 can flow. For example, the tab terminal 50 is used as a connection terminal for power supply.

The housing 10 also has a bottom wall 11 having a bottom surface parallel to the mounting surface of the circuit board, and rises upward from a central portion (longitudinal direction / central portion) of the bottom wall 11 and an array of signal terminals 30. A rectangular convex central protrusion 15 extending in the direction, and rectangular convex side protrusions 12, 12 (a pair of vertical protrusions) that stand upward from the short side and both sides of the bottom wall 11 and extend in the arrangement direction of the signal terminals 30. Side projections 12).
The side protrusion 12 has a shape in which a lower end portion thereof is cut out along the longitudinal direction of the housing 10 (see FIGS. 1 and 2B), and the signal terminal 30 is formed in the cutout portion. The outer leg 30a (described later) is arranged.
Further, leg pieces 14 that contact the circuit board are provided at both ends of the side protrusion 12.

  Then, a groove-like space (two parallel groove-like spaces) opened upward is formed between the central protrusion 15 and each side protrusion 12, and this space is formed on the other side. It is a receiving part for receiving the corresponding fitting part (two side walls 102) of the plug connector PG.

  The signal terminal 30 accommodated and held in the housing 10 is formed, for example, by bending a belt-shaped metal plate in the thickness direction. When viewed in the signal terminal arrangement direction, the signal terminal 30 is formed in a horizontal S-shape that connects the inverted U-shaped portion and the U-shaped portion.

  Further, the inverted U-shaped portion of the signal terminal 30 is held by a signal terminal holding portion 12a provided on the side protrusion 12 by having an inner leg portion (not shown) and an outer leg portion 30a. It is attached to the side protrusion 12 by integral molding so as to straddle the holding portion 12a. An inner leg (not shown) of the inverted U-shaped portion of the signal terminal 30 is disposed on the inner surface side of the side projection 12, and an outer leg 30 a of the inverted U-shaped portion is cut off at the lower end of the side projection 12. The end of the outer leg 30 a is disposed on the outer surface side of the side protrusion 12. The outer leg 30a is connected to the terminal of the board circuit.

In addition, the U-shaped portion of the signal terminal 30 has a lower curved portion bent in a concave shape along the bottom wall 11, and from the lower position of the signal terminal holding portion 12 a of the side convex portion 12 to the side surface of the central protrusion 15. Over position. A portion that forms the free end side of the U-shaped portion is located on the side surface of the central protrusion 15 and is an elastic contact piece.
In addition, the signal terminal 30 is similarly held by both of the two side convex portions 12 located opposite to each other, is positioned symmetrically with respect to the central protrusion 15 in the connector width direction, and is regularly spaced in the longitudinal direction. It is arranged.
In addition, since the structure of the signal terminal 30 and the structure of the housing 10 to which the signal terminal 30 is attached are existing techniques, detailed description thereof is omitted.

Next, the configuration of the tab terminal 50 of the receptacle connector RC will be described with reference to FIGS. 1 to 3 and FIGS. 4 to 6 described above.
FIG. 4 is a perspective view of a tab terminal provided in the receptacle connector of the present embodiment. FIG. 5 is a schematic diagram for explaining tab terminals provided in the receptacle connector of the present embodiment. FIG. 6 is a schematic view showing a cross section of a tab terminal provided in the receptacle connector of the present embodiment.

  Specifically, as shown in FIGS. 4 to 6, the tab terminal 50 extends in the width direction of the housing 10 and has a bottom surface portion 51 disposed on a mounting surface of a circuit board (not shown), and a bottom surface portion. 51 has a pair of elastic contact pieces 52 extending upward from the ends on both sides in the width direction.

As shown in FIG. 6A, the elastic contact piece 52 includes a standing portion 52a extending from both sides and ends in the width direction of the bottom surface portion 51 and extending upward, and a protruding portion 52a. It has a bent portion 52b that is bent in an inverted U shape inward in the width direction and inward from the upper end and extends downward (the pair of elastic contact pieces 52 and the bottom portion 51 are formed in a symmetric and symmetrical shape. Have been).
Further, a contact portion 52c (a contact portion 52c protruding substantially in a dome shape) that contacts the tab terminal 150 provided on the plug connector PG is formed inside the bent portion 52b (in the width direction / inside of the housing 10). Yes.
The contact portion 52c of one elastic contact piece 52 and the contact portion 52c of the other elastic contact piece 52 are arranged so as to face each other, and corresponding connection portions (tab terminals 150) of the plug connector PC. ) Are spaced apart by the same dimension (or slightly smaller dimension) as the dimension in the width direction.

  Further, the tab terminal 50 extends in parallel from the width direction / center portion of the bottom surface portion 51 to the outside from the end portion (center portion in the width direction) in the length direction / outside, and upwards. In addition, a guide piece 53 is provided that is bent and extended substantially at a right angle, and is bent in an inverted U shape from the upper end to the outside in the length direction (see FIGS. 3 to 5).

Specifically, as shown in FIG. 6B, the guide piece 53 is the width direction / center portion of the bottom surface portion 51 and the outer side from the length direction / outer end portion (width direction center portion). A horizontal piece 53a extending parallel to the horizontal piece 53a (the horizontal piece 53a is parallel to the bottom 51), and a vertical piece 53b which is bent upward at an approximately right angle from the end of the horizontal piece 53a. A bent piece portion 53c that is bent in an inverted U shape outward from the upper end of the vertical piece portion 53b (outside in the length direction of the housing 10) and extends vertically downward, and an outer side from the lower end of the bent piece portion 53c. And a leg piece portion 53d extending outward (outside in the length direction of the housing 10).
The leg piece portion 53d is disposed at the same height as the bottom surface portion 51 and comes into contact with the mounting surface of the circuit board.
Further, the upper end portion of the guide piece 53 is designed to have the same height as the upper end portion of the elastic contact piece 52 (a dimension in a direction perpendicular to the surface of the circuit board) (FIG. 5A). (See (d)).

  When the plug connector PC is fitted into the receptacle connector RC, the guide piece 53 is used to connect the tab terminal 150 of the plug connector PC to the region between the pair of elastic contact pieces 52 of the tab terminal 50 of the receptacle connector RC. In addition, it is supposed to play a role to align and call. That is, by providing the guide piece 53, the receptacle connector RC and the plug connector PC can be smoothly fitted.

  In addition, the tab terminal 50 extends in parallel from the width direction / center portion of the bottom surface portion 51 to the inner side from the length direction / inner end portion (center portion in the width direction), and upwards. A mounting piece 54 that is bent at a substantially right angle and extends up is provided (see FIGS. 4 to 6).

Specifically, as shown in FIG. 6 (b), the attachment piece 54 is a width direction / center portion of the bottom surface portion 51 and extends in parallel from the length direction / inner end toward the inside. L-shape having a horizontal piece portion 54a (a horizontal piece portion 54a that is parallel to the bottom face portion 51) and a vertical piece portion 54b that bends and rises at a substantially right angle upward from the end of the horizontal piece portion 54a. The vertical piece 54b is attached to the end (longitudinal end) of the housing 10. For example, the vertical piece 54b is embedded in the end portion (end portion in the longitudinal direction) of the housing 10 by integral molding (embedded in resin).
A through hole 54b1 is formed in the illustrated vertical piece 54b.

As described above, the tab terminal 50 of the present embodiment is not attached so as to cover the upper end portion of the resin housing, unlike the tab terminal of the prior art, but the inner side of the tab terminal 50 at the end of the housing 10. The attachment piece 54 (vertical piece portion 54b) provided at the end is attached by a method such as embedding.
Therefore, the installation space for the metal tab terminal 50 can be increased as compared with the conventional technology described above. As a result, in the present embodiment, the spring portion (elastic contact piece 52) of the tab terminal 50 that contacts the mating terminal can be designed to have a larger size than the spring portion of the tab terminal of the prior art. Compared to, a stable contact with the counterpart terminal becomes possible. In addition, since the spring portion (elastic contact piece 52) of the tab terminal 50 is enlarged, it is possible to pass a large current compared to the tab terminal of the prior art.
Further, in the present embodiment, the tab terminal 150 is attached to the outside of the longitudinal direction and both ends of the housing 10, thereby making it possible to compare the current with the “configuration to be mounted on the upper side of the housing (see FIG. 13)”. The heat dissipation of the temperature rising heat at the time of application is improved.

Further, as shown in FIG. 5, the tab terminal 50 of the present embodiment has a pair of rear end arm pieces 55 extending from the center portion of the guide piece 53 in the height direction of the bent piece portion 53 c to both sides in the width direction. Of the attachment piece 54 (vertical piece portion 54b) bent at a substantially right angle toward the inside at the end portion of each rear end arm piece 55 and passing outside the elastic contact piece 52 (in the width direction / outside of the housing 10). A pair of side arm pieces 56 extending to the position are provided.
In addition, the pair of side arm pieces 56 are each provided with a pair of inverted U-shaped protective pieces 57 and 57 arranged so as to sandwich the elastic contact piece 52 from both sides in the longitudinal direction (longitudinal direction of the housing 10). Is provided. That is, as shown in FIG. 5B, the tab terminal 50 is provided with four protective pieces 57.
The protective piece 57 is separated from the elastic contact piece 52 by a predetermined size, extends from the upper end portion of the side arm piece 56 in an inverted U shape, and has a free end having the same height as the bottom surface portion 51. It is arranged in a position (the free end is in contact with the circuit board).
As shown in FIG. 4, the pair of side arm pieces 56 are respectively formed with leg portions 56 a extending downward at the center and lower end sides in the longitudinal direction (longitudinal direction of the housing 10). Has been. The leg portion 56a is soldered to the mounting surface of the circuit board (the leg portion 56a is a soldering portion).

  By providing the protective piece 57 in this manner, the receptacle connector RC can be more firmly attached to the circuit board. Further, by providing the rear end arm piece 55, the side arm piece 56, and the protective piece 57, the elastic contact piece 52 is caused by an operator's mistake or the like during the operation of fitting the receptacle connector RC and the plug connector PC. Can be prevented from colliding with other parts not envisaged.

  Next, the configuration of the plug connector PG serving as the mating terminal of the receptacle connector RC will be described with reference to FIGS.

  FIG. 7 is a perspective view of the plug connector of the present embodiment. FIG. 8 is a schematic diagram for explaining the plug connector of the present embodiment, (a) is a schematic diagram showing the top surface of the plug connector, and (b) is a schematic diagram showing the side surface of the plug connector. is there. FIG. 9 is a perspective view of the tab terminal of the plug connector of the present embodiment, where (a) is a perspective view of the tab terminal viewed from the rear side, and (b) is a perspective view of the tab terminal viewed from the front side. It is. FIG. 10 is a schematic diagram for explaining the tab terminal of the plug connector of the present embodiment, (a) is a schematic diagram showing the rear surface of the tab terminal, and (b) is a schematic diagram showing the side surface of the tab terminal. (C) is a schematic diagram showing the front surface of the tab terminal, (d) is a schematic diagram showing the upper surface of the tab terminal, and (e) is a schematic diagram showing the lower surface of the tab terminal.

As shown in FIGS. 7 and 8, the plug connector PG includes a resin housing 100 and a plurality of signal terminals (made of metal that are held in two rows by the housing 100 with the longitudinal direction of the housing 100 as a terminal arrangement direction. Signal terminal) 130 and a tab terminal (metal tab terminal) 150 attached so as to cover the longitudinal direction and both ends of the housing 100.
The tab terminal 150 plays a role of fixing both ends of the plug connector PG to the circuit board by soldering, and is electrically connected to the tab terminal 250 of the receptacle connector 200 on the mating side. Have a role to do.

  Further, the housing 100 has a bottom wall 101 having a bottom surface parallel to the mounting surface of the circuit board, and a rectangular protrusion that rises upward from both sides in the longitudinal direction of the bottom wall 101 and extends in the arrangement direction of the signal terminals 130. A pair of side walls 102 and end walls 103 (a pair of end walls 103) connecting the longitudinal direction and both ends of the pair of side walls 102 are provided.

The side wall 103 holds a plurality of signal terminals 130 (signal terminals 130 for connection to the corresponding signal terminals 30 of the receptacle connector RC) with the longitudinal direction of the housing 100 as the terminal arrangement direction.
Further, a tab terminal 150 is attached to the end wall 103 of the housing 100 so as to cover the outer peripheral portion thereof (attached by integral molding).

As shown in FIGS. 9 and 10, the tab terminal 150 includes a pair of upper wall portions 151 that are bent and extended downward from both the width direction of the upper wall portion 151 (width direction of the housing 100) and both sides. Side wall portions 152, 152, the length direction of the upper wall portion 151 (the length direction of the housing 100), the front wall portion 153 that is bent and extended from the inside downward, and the lower end portion of the front wall portion 153 And a bottom wall portion 154 extending in a direction parallel to the upper wall portion 151.
In the tab terminal 150, for example, the inner side surface of the upper wall portion 151 is embedded in the upper end portion of the end wall 103, the inner side surface of the side wall portion 152 is embedded in the side end portion of the end wall 103, and the front wall portion 153 The inner side surface is embedded in the inner end portion of the end wall 103, and the inner side surface of the bottom wall portion 154 is embedded in the lower end portion of the end wall 103, thereby being attached to the end wall 103 of the housing 100.

  Next, a state where the tab terminal of the plug connector is fitted to the tab terminal of the receptacle connector of the present embodiment will be described with reference to FIGS.

Here, FIG. 11 is a schematic view showing a state in which the tab terminal of the plug connector is fitted to the tab terminal of the receptacle connector of the present embodiment, and FIG. It is a schematic diagram, (b) is a schematic diagram of fitting and viewing the state from the rear, (c) is a schematic diagram of fitting and viewing the state from the side.
FIG. 12 is a schematic view showing a cross section in a state where the tab terminal of the plug connector is fitted to the tab terminal of the receptacle connector of the present embodiment.
In FIGS. 11 and 12, the housings 10 and 100 are omitted for easy viewing of the drawings.

  When the plug connector PC is inserted and fitted into the receptacle connector RC of the present embodiment, a groove-like space (two in parallel) formed by the central protrusion 15 of the receptacle connector RC and each side protrusion 12 is formed. The corresponding fitting portion (two side walls 102) of the mating plug connector PG is fitted into the groove-like space), and each signal terminal 30 of the receptacle connector RC corresponds to the corresponding signal terminal of the plug connector PC. 130 is connected.

Further, when the plug connector PC is fitted into the receptacle connector RC, the guide piece 53 of the receptacle connector RC makes a pair of elastic contacts with the tab terminal 150 of the plug connector PC and the tab terminal 50 of the receptacle connector RC. The tab 52 of the receptacle connector RC and the tab terminal 150 of the plug connector PG can be fitted to each other as shown in FIG.
Then, when the plug connector PC is fitted into the receptacle connector RC, as shown in FIG. 12, a pair of elastic contact pieces 52 come into contact with the tab terminals 150 provided on the plug connector PC, and the housing 10 The tab terminal 150 provided on the plug connector PC is clamped by being elastically displaced in the width direction. Specifically, the contact portions 52c of the pair of elastic contact pieces 52 sandwich the side wall portions 152 of the tab terminals 150 provided on the plug connector PC.

  As described above, the tab terminal 50 of the present embodiment is not configured to be disposed and attached so as to cover both ends of the resin housing, as in the above-described conventional tab terminal, but at both ends of the housing 10. The structure which attaches the attachment piece 54 provided in the inner side of the tab terminal 50 is employ | adopted. According to this configuration, a space for installing the metal tab terminal 50 can be increased as compared with the above-described conventional technology. As a result, in this embodiment, the spring portion (elastic contact piece 52) of the tab terminal 50 can be designed to have a larger size than the spring portion of the tab terminal of the prior art. That is, according to the present embodiment, the spring portion that comes into contact with the counterpart terminal can be elastically displaced flexibly, and the attachment / detachment with the counterpart terminal becomes smooth.

Moreover, according to this embodiment, since a pair of elastic contact pieces 52 are connected by the bottom face part 51 (because it is the structure by which the metal (bottom part 51) which connects the elastic contact pieces 52 is arrange | positioned), it is conventional. Compared with the spring part of the technical tab terminal, the spring constant is increased, so that a stable contact can be obtained without sagging with a slight displacement.
Furthermore, as shown in FIG. 12, the tab terminal 50 of the present embodiment includes a portion (elastic contact piece 52) that is in electrical contact with the mating side, and a soldering portion (a leg portion 56 a at the lower end of the side arm piece 56). ) Are physically separated from each other, unlike the above-described prior art tab terminal 250 (see FIG. 15A), the phenomenon that the solder travels through the terminal and rides on the contact portion does not occur. . That is, the tab terminal 50 according to the present embodiment has a structure in which the possibility that the contact performance is deteriorated by soldering is reduced as compared with the above-described conventional tab terminal 250.
Moreover, in this embodiment, since the spring part (elastic contact piece 52) of the tab terminal 50 was enlarged, it becomes possible to flow a large current compared with the tab terminal of a prior art. Further, in the present embodiment, the tab terminal 150 is attached to the outside of the longitudinal direction and both ends of the housing 10, thereby making it possible to compare the current with the “configuration to be mounted on the upper side of the housing (see FIG. 13)”. The heat dissipation of the temperature rising heat at the time of application is improved.

  As described above, according to the present embodiment, the receptacle connector RC mounted on the circuit board can be smoothly attached to and detached from the mating connector, and can be repeatedly attached and detached. Therefore, it is possible to provide the receptacle connector RC including the tab terminal 50 in which the planned contact is obtained.

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible within the range of the summary.

  In the above-described embodiment, the tab terminal 50 is configured to have a pair of elastic contact pieces 52 that rise upward from the end portions on both sides of the bottom surface portion 51 in the width direction. It is not limited to. Two or more pairs of elastic contact pieces 52 may be provided on the tab terminal 50. That is, the tab terminal 50 should just be the structure which has at least 1 pair of elastic contact pieces extended and extended upwards from the edge part of the both sides of the width direction of a bottom face part.

  Further, in the above-described embodiment, the attachment piece 54 of the tab terminal 50 is a horizontal direction that is the width direction / center portion of the bottom surface portion 51 and extends in parallel from the length direction / inner end toward the inside. Although it has an L shape having a piece 54a and a vertical piece 54b that bends and rises at a substantially right angle from the end of the horizontal piece 54a, it is not particularly limited to this. . The attachment piece 54 may have a configuration in which only the horizontal piece portion 54a is provided and the vertical piece portion 54b is not provided. In this case, the horizontal piece portion 54 a of the attachment piece 54 is embedded in the end portion (end portion in the longitudinal direction) of the housing 10.

RC ... Receptacle connector 10 ... Housing 11 ... Bottom wall 12 ... Side protrusion 12a ... Signal terminal holding part 15 ... Central protrusion 30 ... Signal terminal 50 ... Tab terminal 51 ... Bottom part 52 ... Elastic contact piece 52a ... Standing part 52b ... bent part 52c ... contact part 53 ... guide piece 53a ... horizontal piece part 53b ... vertical piece part 53c ... bent piece part 53d ... leg piece 54 ... mounting piece 54a ... horizontal piece part 54b ... vertical piece part 54b1 ... through hole 55 ... Rear end arm piece 56 ... Side arm piece 57 ... Protective piece

PG ... Plug connector 100 ... Housing 101 ... Bottom wall 102 ... Side wall 103 ... End wall 130 ... Signal terminal 150 ... Tab terminal 151 ... Upper wall portion 152 ... Side wall portion 153 ... Front wall portion 154 ... Bottom wall portion

Claims (6)

A receptacle connector on which a plug connector arranged on the mounting surface of another circuit board is inserted and fitted and connected with the direction perpendicular to the mounting surface being the connector insertion / extraction direction. Because
A housing formed in a thin, substantially rectangular parallelepiped shape;
A plurality of signal terminals held by the housing with the longitudinal direction of the housing as a terminal arrangement direction;
A receptacle connector comprising tab terminals arranged and attached respectively to the longitudinal direction and both ends of the housing. The tab terminal is
A bottom surface portion extending in a width direction of the housing and disposed on a mounting surface of the one circuit board;
And having at least one pair of elastic contact pieces extending upward from the end portions on both sides in the width direction in the bottom surface portion,
When the plug connector is inserted, at least one pair of the elastic contact pieces abuts on a connection portion provided on the plug connector and elastically displaces in the width direction, and sandwiches the connection portion provided on the plug connector. The receptacle connector according to claim 1, wherein the receptacle connector is configured as described above. The elastic contact piece rises from both ends in the width direction and rises upward, and is bent in an inverted U-shape from the upper end of the standing portion in the width direction and inward. A bent portion extending downward,
The receptacle connector according to claim 1, wherein a contact portion that contacts a connecting portion provided in the plug connector is formed on the inner side of the bent portion. A guide piece is formed at the width direction / center portion of the bottom surface portion and the end portion of the housing in the length direction / outside,
The guide piece includes a first horizontal piece extending in parallel from the width direction / center portion of the bottom surface portion toward the outer side, and bent at a substantially right angle upward from an end portion of the first horizontal portion. A first vertical piece that rises and a bent piece that is bent in an inverted U shape outward from the upper end of the first vertical piece and extends downward. The receptacle connector according to any one of claims 1 to 3.   A mounting piece is formed at an end portion in the width direction and the center portion of the bottom surface portion and in the length direction and inside of the housing, and the mounting piece is attached to an end portion in the longitudinal direction of the housing. The receptacle connector according to any one of claims 1 to 4. A receptacle connector on which a plug connector arranged on the mounting surface of another circuit board is inserted and fitted and connected with the direction perpendicular to the mounting surface being the connector insertion / extraction direction. Tab terminals attached to both ends of the housing of
A bottom surface portion extending in a width direction of the housing and disposed on a mounting surface of the one circuit board;
A pair of elastic contact pieces extending upward from the end portions on both sides in the width direction in the bottom surface portion;
When the plug connector is inserted, the pair of elastic contact pieces abuts on the connection portion provided on the plug connector and elastically displaces in the width direction, and sandwiches the connection portion provided on the plug connector. Tab terminal characterized by the above.

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