JP2009021026A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector in which a preferable impedance matching can be made and which is superior in noiseproof performance and locking performance. <P>SOLUTION: The connector is provided with a ground plate 50 which is installed so as to cover a conduction part A1 of a flexible cable A and each terminal 20 and electrically contacts the ground part A3 of the flexible cable A when a cut-out part A2 is engaged with a locking part 15 after the flexible cable A is inserted in a connector body 10. A temporary support member 40, which elastically deforms upward while contacting the flexible cable A inserted in the connector body 10 and restores by energizing the flexible cable A downward when the cut-out part A2 is engaged with the locking part 15, is provided at both-end sides in terminal arrangement direction of the connector body 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a connector for connecting, for example, a flexible printed circuit board (FPC) or a flexible flat cable (FFC).

  Conventionally, as this type of connector, a connector main body in which one end of a connection object can be inserted into a predetermined position, a plurality of terminals that contact the connection object inserted into the connector main body, and a connector body inserted into the connector main body By providing a pressing member that presses the connection object to each terminal side, and by providing a temporary holding member for temporarily holding the connection object at a contact portion between the conductive portion provided in the connection object and each terminal, It is known that a connection object is prevented from coming out of a connector main body before being pressed by a pressing member, or from causing contact failure due to displacement.

  However, in this connector, since it cannot be confirmed that the connection object is temporarily held by the temporary holding member, the connection object is not electrically connected to each terminal in a state where the connection object is not completely inserted into the connector body. The part may come into contact and be energized. At this time, before the connection object is pressed to the terminal side by the pressing member, the connection object is pulled out from the connector body, or a displacement occurs between the connection object and each terminal, so that the contact failure or the conductive part of the connection object There was a problem that damage such as streaking occurred.

Therefore, by providing a locking portion for locking the connection object on both ends in the terminal arrangement direction in the connector body, the connection object is provided at both ends of the connection object when inserted into the connector body. It is known that the notched part is fitted to the locking part, and the connection target object is temporarily held by restricting the movement of the connection target object in the anti-insertion direction by locking with the locking part. (For example, refer to Patent Document 1).
JP 2003-100370 A

  However, since the connector of the conventional example does not take measures against EMI (Electro Magnetic Interference), it is likely to be affected by external electromagnetic waves and may have poor noise resistance. In the conventional example, since impedance matching measures are not taken, there is a possibility that high-speed signal transmission cannot be sufficiently performed.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a connector that can achieve suitable impedance matching and is excellent in noise resistance and lockability.

  In order to achieve the above object, the present invention provides a connector main body in which one end of a connection object can be inserted into a predetermined position, a plurality of terminals in contact with a conductive portion provided in the connection object, and the connection object is a connector. And a pressing member that presses the connection object toward each terminal side by being inserted into the connector body after being inserted into the main body, and has locking portions protruding from both ends of the connector body in the terminal arrangement direction. When an object is inserted into the connector body, the tip side of the connection object gets over the locking part, and the notches provided on both side ends of the connection object are fitted to the locking part and locked in the anti-insertion direction. In the connector as described above, provided to cover the conductive portion and each terminal of the connection object, when the connection object is inserted into the connector body and the notch is fitted to the locking portion, the connection object is provided. Grounded and electrical A shield member formed so as to be connected is provided, elastically deforms in a predetermined direction while contacting a connection object inserted into the connector body, and when the notch is fitted to the lock part, the connection object is locked. Temporary holding members that are restored while being urged in the fitting direction are provided on both ends of the connector body in the terminal arrangement direction.

  As a result, when the connection object is completely inserted into the connector body, that is, when the notch of the connection object is fitted into the locking part, the connection object is fitted into the locking part by the temporary holding member. And is locked in the anti-insertion direction by the locking portion, so that the movement of the connection object in the anti-insertion direction can be restricted. Further, when the connection object is inserted into the connector main body, the conductive portion is covered with the shield member, so that the influence of external electromagnetic waves on the conductive portion can be reduced. Further, when the connection object is inserted into the connector body, the conductive portion and the ground portion of the connection object can be electrically connected to each terminal and the shield member.

  According to the present invention, when the connection object is completely inserted into the connector body, the movement of the connection object in the anti-insertion direction can be restricted, so that the connection object is reliably prevented from coming out of the connector body. It is possible to improve locking. In addition, since the influence of external electromagnetic waves on the conductive portion can be reduced, noise resistance can be improved. Furthermore, since the conductive portion and ground portion of the connection object can be electrically connected to each terminal and the shield member, so-called microstrip line structure can be formed, and suitable impedance matching can be achieved. High-speed signal transmission can be sufficiently performed.

  1 to 8 show an embodiment of the present invention. FIG. 1 is a perspective view of a connector, FIG. 2 is a front view of the connector, FIG. 3 is a side view of the connector, and FIG. 5 is a cross-sectional view taken along line BB when the flexible cable is not inserted, FIG. 6 is a cross-sectional view taken along line CC when the flexible cable is not inserted, and FIG. 7 is a line BB when the flexible cable is inserted. FIG. 8 is a cross-sectional view in the direction of the arrowed arrows CC when the flexible cable is inserted.

  This connector includes a connector body 10 into which one end of a flexible cable A as a connection object can be inserted, a plurality of terminals 20 that respectively contact a plurality of conductive portions A1 of the flexible cable A inserted into the connector body 10, and a connector. A pressing member 30 that presses the flexible cable A inserted into the main body 10 toward each terminal 20, a temporary holding member 40 that temporarily holds the flexible cable A inserted into the connector main body 10, and a flexible member that is inserted into the connector main body 10 It is comprised from the ground board 50 as a shield member provided so that each electroconductive part A1 of the cable A might be covered.

  The flexible cable A is referred to as a so-called flexible flat cable (FFC), and a plurality of conductive portions A1 are provided at intervals in the width direction as shown in FIG. ing. Further, a pair of left and right cutouts A2 is provided at both end portions of the flexible cable A, and the front surface of each cutout A2 is formed by a front end face A2a that forms a plane downward. Further, a ground portion A3 is provided on the rear end side of each notch portion A2, and the flexible cable A has a microstrip line structure formed by each conductive portion A1 and each ground portion A3. The connection object may be a flexible printed circuit (FPC) or the like.

  The connector main body 10 is a molded product of a non-elastic member such as a synthetic resin, and is formed in a box shape having an open front side. That is, the connector main body 10 includes an upper surface portion 11, a rear surface portion 12, a side surface portion 13, and a bottom surface portion 14, and the flexible cable A is inserted from the front surface opening portion. A plurality of terminal holes 12a are provided in the back surface portion 12 at equal intervals in the width direction, and each terminal 20 is held in each terminal hole 12a. In addition, a pair of temporary holding holes 12b are provided at both ends of each terminal hole 12a in the arrangement direction, and each temporary holding member 40 is held in each temporary holding hole 12b. In front of each temporary holding hole 12b, a pair of left and right engaging portions 15 formed integrally with the connector main body 10 project upward, and each engaging portion 15 is inserted into the connector main body 10. When engaged with each cutout A2 of the flexible cable A, the flexible cable A is locked in the anti-insertion direction. Each locking portion 15 is formed so that each terminal 20 is in contact with the flexible cable A, that is, higher than the height protruding upward, and its front end is inclined upward toward the rear of the connector body 10. It is formed to make.

  Each terminal 20 is made of an electrically conductive metal plate having elasticity, and is held in each terminal hole 12 a of the connector body 10. Each terminal 20 includes a first straight portion 21 extending in the vertical direction, a second straight portion 22 extending forward from the upper end of the first straight portion 21, and a contact portion provided at the front end of the second straight portion. 23 and a board connecting portion 24 extending rearward from the lower end of the first straight portion 21. The contact portion 23 is bent so as to protrude upward, and impedance matching can be easily performed. Each terminal 20 comes into contact with the conductive portion A1 of the flexible cable A inserted into the connector main body 10 from below, and when the flexible cable A is pressed downward by the pressing member 30, it is elastically downward. It is designed to deform.

  The pressing member 30 is made of a synthetic resin molded product, and is formed in a substantially L shape so as to cover the upper surface side and the front surface side of the connector main body 10. The pressing member 30 includes an operation unit 31 disposed outside the connector body 10, a pressing piece 32 disposed in the connector body 10, and a pair of left and right arm portions 33 inserted into the connector body 10. ing. The operation part 31 extends in the width direction of the pressing member 30, and gripping parts 31 a are projected from both ends thereof. In addition, a concave portion 31 b into which the flexible cable A can be inserted is provided at the center of the lower surface of the operation portion 31. The pressing piece 32 extends rearward from the center of the back surface of the operation unit 31 and is positioned above each terminal 20. Moreover, the thickness dimension of the pressing piece 32 is formed so that it may become small gradually toward the front end side, ie, back. Each arm portion 33 extends rearward from both ends of the back surface of the operation portion 31 and is provided in the connector main body 10 so as to be movable in the front-rear direction.

  Each temporary holding member 40 is made of an electrically conductive metal plate having elasticity, and is held in each temporary holding hole 12 b of the connector main body 10. Each temporary holding member 40 has a pressing piece 41 and a ground contact piece 42 extending in a bifurcated forward direction with a space in the vertical direction, and a ground contact portion 42 a protruding upward at the tip of the ground contact piece 42. Is provided. In addition, a connection portion 43 connected to the substrate is provided at the rear end of each temporary holding member 40.

  The ground plate 50 is made of a conductive metal plate extending in the width direction of the connector main body 10, and is attached to the bottom surface portion 14 of the connector main body 10. Since the ground plate 50 is located below the flexible cable A and is provided so as to cover the conductive portion A1 and each terminal 20 of the flexible cable A from below, the influence of external electromagnetic waves on the conductive portion A1 and each terminal 20 is provided. Can be reduced. Further, contact pieces 51 that are bent so as to protrude upward are provided at both ends in the width direction of the ground plate 50, and the contact pieces 51 contact the lower part of the ground contact piece 42 of the temporary holding member 40. It is supposed to be. The ground plate 50 is connected to a ground portion (not shown) of the substrate.

  In the connector configured as described above, each terminal 20 and each temporary holding member are soldered to the substrate by connecting the board connecting portion 23 of each terminal 20, the connecting portion 43 of each temporary holding member 40, and the ground plate 50. 40 and the ground plate 50 are connected to the substrate. When connecting the flexible cable A to the connector, the flexible cable A can be inserted into the connector body 10 by pulling the pressing member 30 forward. That is, since the thickness dimension of the pressing piece 32 of the pressing member 30 is formed so as to gradually decrease toward the distal end side, when the pressing member 30 moves forward, the bottom portion 14 and the pressing piece 32 The distance increases, and the flexible cable A can be inserted between the bottom surface portion 14 and the pressing piece 32.

  Next, when the flexible cable A is inserted into the connector main body 10 via the concave portion 31b of the pressing member 30, both end sides in the width direction of the distal end of the flexible cable A come into contact with the front end portions of the respective locking portions 15, and then each engagement. It rides on the upper surface of each locking portion 15 while being guided by the inclined surface on the front end side of the locking portion 15. And after the width direction both ends of the front-end | tip of the flexible cable A contact the pressing piece 41 of each temporary holding member 40, the pressing piece 41 of each temporary holding member 40 is elastically deformed upward along the upper surface of the flexible cable A. As shown in FIG.

  Further, when the flexible cable A is inserted toward the rear of the connector main body 10, the tip of the flexible cable A gets over each locking portion 15, and each notch portion A 2 of the flexible cable A and each locking portion 15 of the connector main body 10. And the flexible cable A moves downward. At this time, the elastically deformed pressing pieces 41 of the temporary holding members 40 restore the original shape while urging the flexible cable A downward. Then, a feeling that the flexible cable A is fitted to each locking portion 15 while being pressed by each temporary holding member 40 is transmitted to the outside through the flexible cable A.

  Further, when each notch A2 of the flexible cable A is fitted to each locking portion 15, each conductive portion A1 of the flexible cable A and the contact portion 23 of each terminal 20 come into contact with each other as shown in FIG. Each notch A <b> 2 of the cable A is locked to each locking portion 15. Thereby, the flexible cable A is temporarily held in the connector 10 by each temporary holding member 40. In this case, since the flexible cable A is locked in the anti-insertion direction, that is, in front of the connector main body 10 by the locking portions 15 made of an inelastic member, the locking is released by the deformation of the locking portions 15. As a result, the connector main body 10 is not pulled out, and the positional deviation between the terminals 20 is not caused. Further, since the temporary holding member 40 is connected to the substrate via the connection portion 42, it is not pulled out together with the flexible cable A to the front of the connector main body 10.

  Further, as shown in FIG. 8, when each cutout portion A2 of the flexible cable A is fitted to each locking portion 15, each conductive portion A1 of the flexible cable A is electrically connected to each terminal 20, and the ground portion A3. Is electrically connected to the ground plate 50 via the ground contact portion 42 a of the temporary holding member 40. In this case, since the lower surface side of each conductive portion A1 is covered with the ground plate 50, it is possible to reduce the influence of external electromagnetic waves on each conductive portion A1. Further, since each conductive portion A1 and ground portion A3 of the flexible cable A are electrically connected to each terminal 20 and ground plate 50, so-called microstrip lines can be formed, and suitable impedance matching is achieved. obtain. Further, by bringing the contact piece 51 of the ground plate 50 into contact with the temporary holding member 40, it is possible to form a microstrip line with a reduced number of parts and to increase a usable frequency band. .

  As described above, according to the connector of the present embodiment, the cutout portion A2 is provided so as to cover the conductive portion A1 of the flexible cable A and each terminal 20, and after the flexible cable A is inserted into the connector body 10, 15 is provided with a ground plate 50 formed so as to be electrically connected to the ground portion A3 of the flexible cable A, elastically deforming upward while contacting the flexible cable A inserted into the connector body 10, When the cutout portion A2 is fitted into the locking portion 15, the temporary holding members 40 for restoring the flexible cable A while urging it downward are provided on both ends of the connector body 10 in the terminal arrangement direction. When the cable is completely inserted into the cable 10, the movement of the flexible cable A in the anti-insertion direction can be restricted. It is possible to reliably prevent Bull cable A comes out of the connector body 10. Therefore, the locking property can be improved. Moreover, since the influence of the external electromagnetic wave with respect to electroconductive part A1 can be reduced, noise-proof performance can be improved. Furthermore, since the conductive portion A1 and the ground portion A3 of the flexible cable A can be electrically connected to each terminal 20 and the ground plate 50, a so-called microstrip line structure can be formed, and suitable impedance matching can be achieved. Therefore, high-speed signal transmission can be sufficiently performed.

  Further, the temporary holding member 40 is provided with a ground contact piece 42 formed so as to come into contact with the ground portion A3 of the flexible cable A inserted into the connector main body 10, and the contact piece 51 of the ground plate 50 is used as the ground contact piece 42. Since it can be contacted, the number of parts can be reduced to form a microstrip line, and the usable frequency band can be widened.

The perspective view of the connector in one embodiment of the present invention Front view of connector Connector side view Bottom view of flexible cable BB cross-sectional view when the flexible cable is not inserted CC cross-sectional view when the flexible cable is not inserted BB cross-sectional view when the flexible cable is inserted CC cross-sectional view in the direction of arrow when the flexible cable is inserted

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Connector main body, 20 ... Terminal, 30 ... Pressing member, 40 ... Temporary holding member, 42 ... Ground contact piece 42, 50 ... Ground plate, 51 ... Contact piece, A ... Flexible cable, A1 ... Multiple conductive parts, A2 ... notch, A3 ... ground part.

Claims (2)

A connector body in which one end of the connection object can be inserted into a predetermined position, a plurality of terminals that contact a conductive portion provided in the connection object, and the connection object is inserted into the connector body after being inserted into the connector body. A pressing member that presses the connection object toward each terminal side, and a locking portion is provided on both ends of the connector body in the terminal arrangement direction, and when the connection object is inserted into the connector body, In the connector in which the front end side gets over the locking portion, and the notch portions provided on both side ends of the connection object are fitted in the locking portion and locked in the anti-insertion direction.
Provided to cover the conductive portion and each terminal of the connection object, and when the notch is fitted to the locking portion after the connection object is inserted into the connector body, the ground portion provided in the connection object and the electric A shield member formed so as to be connected electrically,
When it is elastically deformed in a predetermined direction while contacting the connection object inserted into the connector body and the notch is fitted to the locking part, the connection object is restored while being urged in the fitting direction with the locking part. A temporary holding member is provided on both ends of the connector body in the terminal arrangement direction. The temporary holding member is provided with a ground contact portion formed so as to be in contact with the ground portion of the connection object inserted into the connector main body,
The connector according to claim 1, wherein either one of the ground contact portion and the shield member is formed so as to be in contact with the other.

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