KR20100109427A - Electric connector for circuit substrate - Google Patents

Abstract

assignment
The present invention provides an electrical connector for a circuit board that prevents stress from occurring on the shield plate during assembling and after assembly, so that the shield plate can be easily attached to the housing, and the housing and the shield plate are hardly deformed even when heated.
Resolution
The connector includes a housing 10 for arranging and holding a signal group, a ground terminal 30 having an ivory arm portion 31 extending in the insertion-out direction of the balanced conductor, and a terminal group including a plurality of signal terminals and ground terminals 30. To cover at least a portion of the housing 10 over a terminal arrangement range, and a movable member 40 movable toward the closed position that increases the contact pressure between the balanced conductor and the terminal group in an open position allowing the balanced conductor to be inserted. The shielding plate 50 mounted to the housing 10 is provided, and the ground terminal 30 is elastically displaced by being pushed by the cam part 42C of the movable member 40 when the movable member 40 is in the closed position. The upper arm portion is in contact with the shield plate 50.

Description

ELECTRIC CONNECTOR FOR CIRCUIT SUBSTRATE}

The present invention relates to an electrical connector mounted on a circuit board.

Many electrical connectors mounted on a circuit board are provided with a shield metal plate member in a housing. This connector is arrange | positioned on a circuit board, and the flat conductor is connected from the front surface in the direction parallel to the surface of the circuit board. As this kind of connector, the connector disclosed by patent document 1 is known, for example.

Patent Literature 1 discloses a connector for a circuit board fitted to the housing so that the shield plate covers the rear surface from the upper surface of the housing. In the connector, a terminal group consisting of a signal terminal and a ground terminal (ground terminal) is arranged and held by the housing, and the shield is formed by fitting projections or click portions formed on the shield plate to recesses or holes formed in corresponding portions of the housing. The plate is mounted on the housing. In the state where the shield plate is attached to the housing, a contact piece formed by cutting a part of the portion covering the upper surface of the housing or the portion covering the rear surface of the shield plate is in elastic contact with the ground terminal.

Japanese Patent Application Laid-Open No. 11-204204

However, the connector of Patent Literature 1, at the time of assembling the connector, has a large contact pressure to ensure stable electrical conduction with the ground terminal, while elastically contacting the contact piece of the shield plate with the ground terminal, that is, while elastically displacing it. It is necessary to attach the shield plate to the housing. Therefore, since the shield plate must be mounted while receiving the reaction force from the ground terminal, the position of the shield plate is likely to be displaced during the assembling operation, and assembly of the connector is not easy. In recent years, the connector tends to be reduced in size, and the shield plate is often thinned. In particular, such a thin shield plate is likely to be displaced due to the reaction force from the ground terminal at the time of installation. In addition, the contact pressure between the shield plate and the ground terminal may cause damage to the shield plate and the ground terminal.

Moreover, even after the connector was assembled, the contact pieces of the shield plate were elastically displaced, so that stress was always generated in the shield plate main body. The stress was transmitted to the housing through the shield plate and the mounting portion of the housing. As described above, if the connector is heated during reflow mounting of the circuit board in a state where stress is generated in the housing, the housing is easily deformed by heat and warpage occurs. In addition, the shield plate itself is also thermally deformed by heating.

Such deformation of the housing and the shield plate may cause adverse effects due to the insufficient lack of contact pressure between the contact piece of the shield plate and the ground terminal.

In view of these circumstances, the present invention prevents stress from occurring on the shielding plate when not in use during assembly and even after assembly, so that the mounting of the shielding plate to the housing is easy, and the substrate or the shielding plate is hardly deformed even when heated. It is an object to provide an electrical connector.

The electrical connector for a circuit board which concerns on this invention is a circuit board electrical connector which arrange | positions on a circuit board, and inserts a flat conductor, and electrically connects the balanced conductor and a circuit board, Comprising: The signal terminal of a metal and a flat conductor of A metal ground terminal having a movable arm portion extending in the insertion extraction direction, a housing of an electrical insulator holding and arranging a terminal group including a plurality of signal terminals and a ground terminal, and an opening for allowing a flat conductor to be inserted into an opening of the connector. The movable member is movable from the position toward the closed position which raises the contact pressure of the flat conductor and the terminal group, and a shield plate is mounted to the housing so as to cover at least a part of the housing over the terminal arrangement range.

In such a circuit board electrical connector, in the present invention, the movable member has a cam portion that pushes and elastically displaces the movable arm portion of the ground terminal when moving to the closed position, and the ground terminal is located in the closed position. At this time, the movable arm portion pushed by the cam portion and elastically displaced is in contact with the shield plate.

When the movable member is moved toward the closed position in order to increase the contact pressure between the flat conductor inserted into the opening of the connector and the terminal group, the movable arm portion of the ground terminal is pushed elastically by the cam portion of the movable member. When the movable member is in the closed position, the movable arm portion pushed by the cam portion and elastically displaced makes contact with the shield plate at a large contact pressure such that electrical conduction with the shield plate can be stably secured. In other words, when the movable member is in the open position, the movable arm portion of the ground terminal is not in contact with the shield plate or is in contact with the small contact pressure such that electrical conduction with the shield plate is not stably obtained. No stress is generated on the shield plate, or a slight degree of stress is generated. Usually, when assembling the connector, the movable member is in the open position. Therefore, according to the present invention, when the connector is assembled, the shield plate receives no reaction force from the ground terminal or only a small degree, so that large stress does not occur in the shield plate. Therefore, during the assembly operation of the connector, the shield plate is attached to the housing almost without shifting the position of the shield plate.

Moreover, at the time of reflow mounting, the flat conductor is not connected to the connector, and the movable member is in the open position. Therefore, since the stress is not applied to the shield plate at all, or only a slight degree is applied, the shield plate and the housing on which the shield plate is mounted are hardly deformed by heating.

As one form of the cam part of a movable member, the cam part is located under the movable arm part of a ground terminal, and when a movable member moves to a closed position, you may push up the movable arm part and elastically displace the movable arm part. By making the cam portion in this form, the arm portion pushed up by the cam portion and elastically displaced is in contact with the shield plate in the closed position.

It is preferable that the movable arm part of a ground terminal is formed in the contact part with a shield plate as a protrusion part. Thus, by forming a protrusion part in a movable arm part, even if the elastic displacement amount of a movable arm part is small, the movable arm part and a shield plate can contact. Moreover, although the contact of the arm part of a ground terminal and a shield plate is local, the movable arm part and a shield plate can be reliably contacted.

At least one of the ground terminals of the plurality of ground terminals may be formed as one member integrally with the shield plate. By integrating the ground terminal and the shield plate, the number of parts can be reduced, so that the parts can be easily managed and the manufacturing cost can be reduced.

The housing has an opening that is opened forward and into which the balanced conductor is inserted in a direction parallel to the circuit board, the shield plate is mounted to the housing so as to cover the upper portion of the housing, and the ground terminal is located under the movable arm portion of the movable arm. A fixed arm portion extending in a direction parallel to the arm portion and fixed to the housing, and a connecting portion connecting the movable arm portion and the fixed arm portion at a longitudinal middle position, wherein the movable arm portion presses the flat conductor from above; It has a pressurizing part at the front side rather than the said connection part, and has a hydraulic pressure part which receives the force upward from the cam part of a movable member at a rear end side than the said connection part, and the cam part of the said movable member is a movable arm. It is located below the negative pressure receiving portion, and the movable arm portion is provided when the movable member moves toward the closed position. The pressing portion is pushed up by the additional cam portion and elastically displaced in a lever shape with the connecting portion as a supporting point to displace the pressing portion downward. When the movable member is in the closed position, the pressing portion presses the flat conductor from above and The upper edge of the rear end may be in contact with the shield plate.

As described above, in the present invention, when the movable member is in the closed position, the movable arm portion of the ground terminal is brought into contact with the shield plate at a large contact pressure such that electrical conduction with the shield plate can be stably secured. When the movable member is in the open position, the movable arm portion of the ground terminal and the shield plate are not in contact with each other or contact with a small contact pressure. Can be attached to, and the connector can be easily assembled.

Moreover, even when reflow is mounted, since a large stress does not generate | occur | produce in a shield plate, the shield board and the housing in which the shield board is mounted are not deformed by heating. Therefore, when the movable member is moved to the closed position, a good contact state between the arm portion of the ground terminal and the shield plate can be ensured.

1 is a perspective view showing an electrical connector for a circuit board and a balanced conductor according to a first embodiment.
FIG. 2 is a cross-sectional view of the connector of FIG. 1 in which two signal terminals are arranged, as viewed from the terminal arrangement direction, FIG. 2A is a position of one signal terminal, and FIG. 2B is another signal terminal. Each cross section is shown in the position, and the movable member is shown in the open position.
3 is a cross-sectional view of the connector of FIG. 1 as viewed from the terminal arrangement direction from the position of the ground terminal, FIG. 3A is a state in which the movable member is in an open position, and FIG. 3B is a state in which the movable member is closed; Is shown.
4 is a perspective view illustrating a shield plate of the connector of FIG. 1.
5 is a cross-sectional view of the connector in the second embodiment as viewed from the terminal arrangement direction from the position of the ground terminal, FIG. 5A is a state in which the movable member is in the open position, and FIG. It is shown in the closed position.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described based on an accompanying drawing.

≪ First Embodiment >

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the connector of one Embodiment of this invention, and the balanced conductor which should be connected to this.

In FIG. 1, the code | symbol 1 is a connector of this embodiment, and the code | symbol F is a balanced conductor connected to the connector 1. As shown in FIG. The connector 1 includes a housing 10 made of an electrical insulating material, a plurality of signal terminals 20 and a ground terminal 30 made of a metal plate held by the housing 10 (hereinafter, appropriately referred to as “terminal 20”). 30) ”, the movable member 40 which presses the balanced conductor F connected to the terminal 20, 30, and the metal plate shield plate 50 mounted to the housing 10, . The connector 1 is a thin connector having a height of about 1 mm.

For example, the balanced conductor F is provided with a corresponding circuit portion in contact with each terminal 20, 30 on a lower surface of the flexible sheet, and a reinforcing sheet on an upper surface of a tip portion which becomes a portion to be inserted into the connector 1. (F1) is attached. The flat conductor is provided with a locking recess F2 as a caught portion for engaging with the lock protrusion of the connector and preventing the flat conductor from being pulled out at the side edge of the portion where the reinforcing sheet F1 is formed. .

The housing 10 is, for example, a predetermined distance between the plurality of two signal terminals 20 (20A and 20B) and the ground terminal 30 which are shaped while maintaining a flat plate surface of a metal plate in a direction perpendicular to the plate surface. It is arranged to keep. The housing 10 has a surface parallel to the surface of the signal terminals 20A, 20B and the ground terminal 30 at respective positions of the two types of signal terminals 20A, 20B and the ground terminal 30. As can be seen from Figs. 2 (A), 2 (B) and Fig. 3 showing a cross section of a space penetrating in the front-rear direction (left and right directions in Figs. 2 (A), 2 (B) and 3), It has an upper wall 12 and a lower wall 13. The upper wall 12 forms a space 14 in which the rear region (the right partial region in FIGS. 2 (A), 2 (B) and 3) is cut out and opened upward, and will be described later in this space 14. The movable member 40 is arrange | positioned. In this embodiment, the balanced conductor F is accommodated from the opening part of the front side (left in FIG. 2 (A), 2 (B), and FIG. 3) in the housing | casing 10. As shown in FIG.

As shown in FIGS. 2A, 2B, and 3, the inner surface of each of the upper wall 12 and the lower wall 13 of the housing 10 extends through the terminal insertion groove 15 extending in the front-rear direction. 16) is formed. The groove widths (groove inner widths in the direction perpendicular to the ground in Figs. 2A, 2B and 3) of the terminal insertion grooves 15 and 16 are almost the same as the plate thicknesses of the terminals 20 and 30. In this way, the terminals 20 and 30 can be inserted or supported. The terminal insertion grooves 15, 16 support one terminal 20, 30 with the upper and lower sets of terminal insertion grooves 15, 16 at the same position in the terminal arrangement direction. The two types of signal terminals 20A and 20B and the ground terminal 30 are arranged such that the ground terminals 30 are mixed in the arrangement of the signal terminals 20A and 20B, for example. As can be seen from Figs. 2 (A) and 2 (B), one type of signal terminal 20A and another type of terminal 20B are respectively in the right and left sides with respect to the terminal insertion grooves 15 and 16, respectively. It is press-fitted. 3, the ground terminal 30 is press-fitted from the right side with respect to the terminal insertion grooves 15 and 16. As shown in FIG. In order to more reliably hold | maintain the terminal 20, 30, the fixing part 16A, 16B which thins the edge part of the lower wall 13 at the terminal insertion start side, and fixes the terminal 20, 30 to this is provided. .

As shown in Figs. 2A and 2B, the two types of signal terminals 20A and 20B form a horizontal H-shape, and the upper arm portions 21A and 21B and the lower arm portions 22A and 22B are both. It has the connection part 23A, 23B which connects an arm, respectively. The upper arm portions 21A and 21B have protrusion-like pressing portions 24A and 24B on the front end side (left end side in the drawing), and recessed or immersive hydraulic pressure portions 25A and 25B on the rear end side. The pressure receiving portions 25A, 25B are portions that receive upward force from the cam portion of the movable member 40, which will be described later. Upon receiving such force, the upper arm portions 21A, 21B are elastically connected portions 23A, 23B. ) Is elastically displaced so as to be inclined in a lever shape as a support point, and the pressing portions 24A and 24B are displaced downward, and the equalizing conductors are pressed downward by the pressing portions 24A and 24B. The upper arm portion 21A of the one kind of signal terminal 20A extends longer than the upper arm portion 21B of the other signal terminal 20B, so that the pressing portion 24A is longer than the pressing portion 24B. Located in front In contrast, the pressure receiving portions 25A and 25B are at the same position in the front-rear direction. The upper arm portions 21A and 21B are pressed into the bottom surface of the terminal insertion groove 15 at the upper edge near the connecting portions 23A and 23B, but are inclined with the connecting portions 23A and 23B as the supporting points. Thus, a very small gap is formed between the terminal insertion groove 15 and the inner surface of the opposing groove.

The lower arm portions 22A and 22B are accommodated in the terminal insertion groove 16 of the lower wall 13. In one type of signal terminal 20A, the lower arm portion 22A has a portion extending forward than the connecting portion 23A at the front end side, has elasticity in the up and down direction, and has a protruding contact portion 26A at the front end portion. ), The portion extending rearward from the connecting portion 23A has a connecting portion 27A and a fixed portion 28A on the rear end side. The connection portion 27A protrudes out of the housing and is in a position where the lower edge is in contact with the circuit board, and is used for solder connection with the corresponding circuit portion of the circuit board. 28 A of to-be-retained parts are formed in the groove shape so that the connection part 27A may become the inner edge, and it is attached to the fixing part 16A of the lower wall 13 of the said housing 10, and is attached. At the upper edge of the portion between the connecting portion 27A and the connecting portion 23A, a locking convex portion 29A is formed, and the cam of the movable member 40 together with the leading edge of the locking convex portion 29A at its front position. The recessed support part 29A-1 which supports the cam part at the time of negative rotational movement is formed.

In the other signal terminal 20B, the lower arm portion 22B has a front end of the portion extending forward than the connecting portion 23B, and has a connecting portion 27B and a fixed portion 28B. With respect to the one kind of terminal 20A, although the connecting portion 27B and the pinned portion 28B are formed in opposite positions and front ends, their shape and function are the same as in the case of the one signal terminal 20A. The connecting portion 27B is soldered to the circuit board, and the fixed portion 28B is fitted to the fixing portion 16B of the lower wall 13 of the housing 10 to be fixed. The lower arm portion 22B is provided with a protruding contact portion 26B at a position substantially equal to the pressing portion 24B in the front-rear direction between the connecting portion 23B and the connecting portion 27B. Further, the lower arm portion 22B is provided with a support portion 29B supporting the cam portion at the time of rotational movement of the cam portion of the movable member 40 at a straight upper edge of the portion extending rearward from the connecting portion 23B. It is.

Hydraulic pressure portions 25A and 25B to displace the pressing portions 24A and 24B of the upper arm portions 21A and 21B downward in order to push the balanced conductors toward the contact portions 26A and 26B of the signal terminals 20A and 20B. ), The movable member 40 for lifting upwards is made of the same electrical insulating material as that of the housing in this embodiment, and has the operation part 41 and the cam part 42A, 42B. The movable member 40 is disposed in the space 14 at the rear of the housing 10, and these signal terminals 20A and 20B are located at positions corresponding to the respective signal terminals 20A and 20B in the terminal arrangement direction. Slit-shaped grooves 41A, 41B are formed to allow rear entry of the ivory arm portions 21A, 21B of the upper and lower arm portions 21A, 21B. ) Is formed. In the present embodiment, the cam portions 42A and 42B form an elliptical island shape that is horizontally long when the movable member 40 is in the open position of FIGS. 2 (A) and 2 (B). The rear portion of the upper arm portions 21A, 21B is accommodated in the groove portions 41A, 41B between 42B and the groove bottoms 41A-1, 41B-1 of the groove portions 41A, 41B. The movable member 40 is capable of freely rotating around the cam portions 42A and 42B, and is clockwise from an open position in a vertically long position shown in FIGS. 2A and 2B. Receive a reciprocating rotational operation between the closed positions which rotate 90 ° and take a long horizontal position. In the attitude | position of the opening position shown to FIG. 2 (A), 2 (B), in the movable member 40, the part which protrudes upwards from the space 14 of a housing becomes the operation part 41, and this operation part At 41, a manipulation force for the rotational motion is received. The cam portions 42A and 42B are elongated horizontally and vertically elongated at the time of rotational movement from the state supported by the support portions 29A-1 and 29B of the signal terminals 20A and 20B to the closed position, In the upper stage, the pressure receiving portions 25A, 25B of the signal terminals 20A, 20B are lifted upward. In this way, the upper arm parts 21A and 21B of the signal terminals 20A and 20B are elastically displaced so as to be inclined in a lever shape with the connecting parts 23A and 23B as the supporting points as described above, and the pressing parts 24A and 24B By pressing the balanced conductor downward, the contact pressure between the balanced conductor and the contact portions 26A and 26B of the signal terminals 20A and 20B is increased.

The ground terminal 30 is inserted rearward into the terminal insertion grooves 15 and 16 of the corresponding housing 10 as shown in Figs. 3A and 3B, and is held there. The ground terminal 30 is substantially similar to the signal terminal 20A of FIG. 2A, forming a horizontal H shape, and has an upper arm portion 31, a lower arm portion 32, and a connecting portion 33. The upper arm part 31 is formed as a movable arm part which can be elastically displaced similarly to the signal terminal 20A, and has the press part 34 in the front side, and the hydraulic part 35 in the rear end side. The upper arm portion 31 has a protruding contact protrusion 36 at the upper edge of the portion between the connecting portion 33 and the hydraulic pressure portion 35 in the front-rear direction. The lower arm portion 32 is formed as a fixed arm portion fixed to the housing 10, similarly to the signal terminal 20A, and has a ground contact portion 37 on the front end side and a connecting portion 38 and a fixed portion 38A on the rear end side. And an engaging convex portion 39 is formed at the upper edge of the portion between the connecting portion 38 and the connecting portion 33, and the concave support portion 39A supporting the cam portion of the movable member 40 at the front position thereof. Is formed. As shown in FIG. 3A, when the movable member 40 is in the open position, a gap is formed between the contact protrusion 36 of the ground terminal 30 and the shield plate 50, and the contact protrusion is provided. And the shield plate 50 are not in contact.

2 (A) and 3 (A) and 3 (B), as can be seen clearly, the upper wall 12 of the housing 10 has a rear end at the position of the ground terminal 30 in the terminal arrangement direction, It is located slightly ahead of the rear end at the position of the signal terminal 20A in the same direction. This is to form a space in the rear of the upper wall 12 that accommodates the contact protrusions 36 as shown in Figs. 3A and 3B.

In the present embodiment, it is assumed that the ground terminal has a connecting portion and a fixed portion on the rear end side, but instead of the signal terminal 20B, the ground terminal may have a connecting portion and a fixed portion on the front end side.

As shown in Figs. 3A and 3B, the movable member 40 is provided with a groove portion 41C that allows entry of the rear portion of the upper arm portion 31, and has an island shape in the groove portion 41C. 42 C of cam parts are formed. The movable member 40 accommodates the rear portion of the upper arm portion 31 in the groove portion 41C between the cam portion 42C and the groove bottom 41C-1 of the groove portion 41C in the open position. As shown in FIG. 3 (A), the groove portion 41C has a slightly wider front side in the open position toward the upper side, and the movable member 40 interferes with the contact protrusion 36 of the ground terminal 30. It is not supposed to. The shape of the cam portion 42C is the same as the cam portions 42A and 42B of the signal terminals 20A and 20B. Thus, as shown in FIG.3 (B), when the movable member 40 rotates to the closed position, the ivory arm part 31 is the connection part 33 similarly to the case of signal terminal 20A, 20B. It is elastically displaced so that it may incline to a lever shape as a support point, and the press part 34 is displaced downward. As a result, as shown in FIG. 3B, the contact protrusion 36 of the ground terminal 30 is in contact with the shield plate 50, and the ground terminal 30 and the shield plate 50 are electrically connected to each other. It is conducting. The contact pressure which arises by the contact of the contact protrusion part 36 and the shield plate 50 is about 0.15-0.5 N at least.

In this embodiment, since the contact protrusion part 36 is formed in the contact part with the shield plate 50 in the ground terminal 30, even if the elastic displacement amount of the upper arm part 31 of the ground terminal 30 is small, it is grounded. The terminal 30 and the shield plate 50 can be contacted. In addition, although the contact between the ground terminal 30 and the shield plate 50 is local, the ground terminal 30 and the shield plate 50 can be reliably contacted.

As shown in FIG. 4, the shield plate 50 attached to the housing 10 is made by bending one metal plate after forming its outer shape. The shield plate 50 has an upper shield portion 52 having a flat surface in close contact with the upper surface of the housing 10 and a shield portion 51 having a side shield portion 53 positioned at the side of the housing 10. And the solder fixing portion 54 bent from the side shield portion 53 in the terminal array direction inward and bent upward from the solder fixing portion 54 so as to be parallel to the side shield portion 53, that is, the terminal ( The locking part 55 which has a plate surface parallel to 20 and 30 is integrally provided as one member.

The upper shield portion 52 has a flat surface and has a rectangular shape, and a mounting cutout portion 52A having a semicircular shape and a straight inner edge is formed at the trailing edge at the central portion in the longitudinal direction (terminal arrangement direction). The mounting cutout 52A is formed in a small region which is smaller than the width of the upper shield portion 52 in the front-rear direction so that the strength of the upper shield portion 52 is not lowered or the shielding effect is lowered. have. A locking projection 52A-1 is formed on the straight inner edge forming the rear portion of the mounting cutout 52A.

The side shield part 53 has the front part 53A connected with the one part of the side ends of the upper shield part 52 in the front-back direction, and the rear part 53B extended from this. The whole 53A is bent at the boundary with the upper shield portion 52 and extends downward. The rear part 53B is formed by extending the entire surface of the 53A as it is, and forming an arm shape. A cutout 53A-1 is formed in the lower edge of the whole 53A, and a rear portion thereof is bent inward in the terminal array direction than the cutout 53A-1, and is parallel to the upper shield 52. The solder fixing part 54 which forms a part of surface is formed. The solder fixing portion 54 is configured such that its bottom face is in contact with the surface of the circuit board, and is soldered to the corresponding portion of the circuit board. The whole part 53A has the leg part 53A-2 which formed the same surface as the said rear part 53B in the lower edge part ahead of the said cutting groove 53A-1. The lower edge 53A-2 is positioned so that its lower edge is located on the circuit board, and similarly to the solder fixing part 54, it forms another solder fixing part that assists fixing with the circuit board. Solder fixing with the circuit board may be any one of the solder fixing part 54 or the leg portion 53A-2. In the rear part 53B of the said side shield part 53, the lower edge of the rear end side is cut out in staircase shape, and the axial support part 53B-1 is formed. This shaft support part 53B-1 accommodates the rotational motion shaft in this shaft support part 53B-1, when the movable member 40 mentioned later has a rotational motion shaft in the terminal arrangement direction both ends, and this support this rotational motion. do.

The locking portion 55 is connected to the solder fixing portion 54 through the bent region at the lower edge portion of the front end side, and the locking protrusion 56 protruding upward is formed at the upper edge. The lock projection 56 enters into the locking concave portion F2 as the caught portion formed in the balanced conductor F connected to the connector 1 shown in FIG. It is to prevent.

In view of mounting such a shield plate 50, the housing 10 will be described again. As shown in FIG. 1, the housing 10 includes a shield plate holding groove 17 for inserting the engaging portion 55 of the shield plate 50 and a mounting cutout 52A of the upper shield portion 52. It has the projection 18 for latching.

The shield plate holding groove 17 is outside the terminal arrangement range, in other words, the range in which the terminal insertion grooves 15 and 16 are formed, and the terminal 20, which is held by the terminal insertion grooves 15 and 16. It is formed so that the plate surface of the said locking part 55 may be located in the surface parallel to the plate of 30. The protrusion 18 formed on the upper surface of the housing 10 is located at a position where the mounting cutout 52A of the shield plate 50 is fitted when the shield plate 50 is mounted to the housing 10 from the front. It is formed, and the locking projection 52A-1 formed in the inner edge of the mounting cutout 52A is made to penetrate into the side surface of the protrusion part 18. As shown in FIG. As a result, the upper shield portion 52 elongated in the terminal arrangement direction is prevented from rising upward from the upper surface of the housing 10.

When the shield plate 50 is mounted to the housing 10, the engaging portion 55 is inserted from the front into the shield plate holding groove 17 of the housing 10 and is held there.

The connector of this embodiment is used in the following manner and functions.

(1) First, in assembling the connector, in the state where the movable member 40 and the shield plate 50 are not attached, the signal terminal 20A shown in FIG. 15, 16 and fixed to the fixing portion 16A of the housing 10 with the fixing portion 28A, and the signal terminal 20B shown in FIG. 15, 16 and secured to the fixing portion 16B of the housing 10 with the fixing portion 28B. In addition, the ground terminal 30 shown in Fig. 3 is inserted into the terminal insertion grooves 15 and 16 from the right side and fixed to the fixing portion 16A of the housing 10 by the fixed part 38A. In the present embodiment, the terminals 20 and 30 are arranged such that the ground terminals 30 are mixed in the arrangement of the signal terminals 20A and 20B, but may be arranged in a different order as required.

(2) Next, the movable member 40 is attached from the rear in the open position state shown to FIG. 2 (A), 2 (B), and FIG. 3 (A). The cam portions 42A, 42B and 42C of the movable member 40 are positioned in contact with the support portions 29A-1, 29B and 39A of the terminals 20 and 30.

(3) After this, the shield plate 50 is attached to the housing 10 from the front. The upper shield portion 52 and the side shield portion 53 constituting the shield portion 51 of the shield plate 50 are located in contact with the upper and side surfaces of the housing 10, respectively, and the locking portion 55 is the shield plate. It is inserted into the retaining groove 17. The upper shield portion 52 has a mounting cutout portion 52A fitted to the protrusion 18 on the upper surface of the housing 10, and the engaging projection 52A-1 of the inner edge of the mounting cutout 52A has its protrusion portion. The position of the upper shield portion 52 is firmly fixed by digging into the side surface of 18. On the other hand, the locking part 55 inserted in the shield plate holding groove 17 is press-fitted with respect to the shield plate holding groove 17, and is hold | maintained.

At the time of installation of the shield plate 50 to the housing 10, the movable member 40 is in the open position, and the upper arm portion 31 of the ground terminal 30 is the cam portion 42C of the movable member 40. Not lifted by Therefore, at the time of installation of the shield plate 50, the contact protrusions 36 formed on the upper edge of the upper arm portion 31 do not contact the shield plate 40, so that stress does not occur in the shield plate 50. .

(4) The connector 1 assembled in this manner is disposed on a predetermined circuit board at the time of use. When the connector 1 is disposed on a circuit board, the connection portions 27A, 27B, 38 of the terminals 20, 30, the solder fixing portions 54 of the shield plate 50, and the leg portions 53A-2, respectively. Is in contact with the corresponding portion of the circuit board. After this, soldering with this counterpart is carried out so that the signal terminals 20A and 20B are electrically connected with the corresponding circuits and fixed, and the ground terminal 30 is fixed with the corresponding circuit parts and grounded, and the shield plate ( The solder fixing portion 54 and the leg portion 53A-2 of the 50 are fixed to the circuit board.

(5) After this, the balanced conductor F shown in FIG. 1 is inserted into the connector 1, and the movable member 40 is rotated to the closed position. By the rotational movement to the closed position, the cam portions 42A, 42B and 42C of the movable member 40 are vertically elongated to receive the hydraulic pressure portions 25A and 25B of the signal terminals 20A and 20B and the ground terminal 30. Presses the pressure-receiving portion 35 upwards), and according to the principle of the lever described above, the upper arm portions 21A, 21B of the signal terminals 20A, 20B and the upper arm portion 31 of the ground terminal 30 are sheared. The pressing portions 24A, 24B, and 34 are inclined so as to be displaced downward, and the pressing portions 24A, 24B and 34 press the balanced conductors F downward. The flat conductor F pressed downward increases the contact pressure with the contact portions 26A, 26B of the signal terminals 20A, 20B and the ground contact portion 37 of the ground terminal 30. In addition, at the time of the rotational movement of the movable member 40 to the closed position, the upper arm portion 31 of the ground terminal 30 is lifted by the cam portion 42C of the movable member 40 from the hydraulic pressure portion 35. As a result, when the movable member 40 is in the closed position, as shown in FIG. 3B, the contact protrusion 36 of the upper arm portion 31 comes into contact with the shield plate 50. Moreover, the lock protrusion 56 of the locking part 55 intrudes into the locking recessed part F2 of the flat conductor F, and the fall of the balanced conductor F is prevented.

In the connector 1 which concerns on this embodiment, when the movable member 40 is in an open position, since the ground terminal 30 and the shield plate 50 do not contact, the shield plate 50 is carried out at the time of connector assembly. Is mounted on the housing 10, the shield plate 50 does not receive a reaction force from the ground terminal 30, and stress does not occur in the shield plate 50. Accordingly, the position of the shield plate 50 does not shift during the assembling work, so that the mounting of the shield plate 50 and the assembly of the connector 1 can be easily performed. In addition, since the ground terminal 30 and the shield plate 50 do not contact each other, the ground terminal 30 and the shield plate 50 can be avoided from being damaged by shaving or the like during the assembling work.

In addition, after the connector 1 is assembled, when the connector 1 is reflowed to the circuit board, the flat conductor F is not connected to the connector 1, and the movable member 40 is opened. In position. Therefore, at the time of the reflow mounting, since the ground terminal 30 does not contact the shield plate 50, no stress is generated in the shield plate 50. As a result, the shield plate 50 and the The housing 10 on which the shield plate 50 is mounted is not deformed by heating. Therefore, when the connector 1 and the balanced conductor F are connected, ie, when the movable member 40 is moved to the closed position, a good contact state between the ground terminal 30 and the shield plate 50 can be ensured. .

In this embodiment, although the contact protrusion part was formed in the contact part with the shield plate in a ground terminal, when sufficient elastic displacement amount of the upper arm part of a ground terminal can be ensured, it does not form a contact protrusion part in the said contact part, The upper edge of the upper arm portion of the terminal may be in contact with the shield plate.

Further, at the position of the ground terminal in the terminal arrangement direction, the rear end side portion of the shield plate, that is, the portion extending rearward from the rear end portion of the upper wall of the housing is bent downward to form a contact portion with the ground terminal, and the contact portion And the ground terminal may contact each other. In this case, if the contact state between the contact portion and the ground terminal can be secured when the movable member is in the open position, the contact protrusion may or may not be formed on the ground terminal.

In the present embodiment, the ground terminal and the shield plate are formed as separate members, but as a modification, at least some of the ground terminals and the shield plate of the plurality of ground terminals may be integrally formed as one member. For example, the part in which the engaging part is formed in the shield plate is formed in the shape which integrated the ground terminal and the lock protrusion, and has both the function to prevent the fall of the balanced conductor by the lock protrusion, and the ground function by the ground terminal. You may. As described above, by forming the ground terminal and the shield plate integrally with one member, the number of parts can be reduced, so that the parts can be easily managed and the manufacturing cost can be reduced. In this modification, the ground terminal which is not integrated with the shield plate among the plurality of ground terminals is formed so as to be mixed in the arrangement of the signal terminals as in the above-described embodiment.

In the present embodiment, the ground terminal and the shield terminal are not in contact with each other during assembly of the connector and when the movable member is in the open position. Instead, grounding is performed with a slight pressure such that electrical conduction is not obtained stably. The terminal and the shield terminal may be in contact with each other. Thus, even if some contact pressure generate | occur | produces, the position of a shield board hardly shifts during assembly of a connector. In addition, since only a small amount of stress is applied to the shield plate, during the reflow mounting, the shield plate and the housing on which the shield plate is mounted are hardly deformed by heating.

In the present embodiment, the signal terminal and the ground terminal are so-called press-punched terminals formed while maintaining the flat plate surface of the metal plate. Instead, the signal terminal and the ground terminal are formed as so-called bent terminals that bend the plate surface to form elasticity. You may also

In the present embodiment, the electrical connection between the balanced conductor F and the signal terminals 20A, 20B includes contact portions 26A, 26B of the corresponding circuit portion formed on the bottom surface of the balanced conductor F and the signal terminals 20A, 20B. ), But the form of the connection is not limited to this.

For example, a corresponding circuit portion is formed on the upper surface of the balanced conductor F, and the contact between the corresponding circuit portion and the pressing portions 24A, 24B of the signal terminals 20A, 20B (hereinafter referred to as "upper contact connection"). Alternatively, a corresponding circuit portion may be formed on the upper and lower surfaces of the balanced conductor F, and may be formed by both the upper contact connection and the lower contact connection. Moreover, the upper contact connection and the lower contact connection may be alternately made in the terminal arrangement direction.

In the present embodiment, the connector 1 is assembled by mounting in the order of the signal terminal 20A, the ground terminal 30, the movable member 40, the signal terminal 20B, and the shield plate 50. The assembly procedure of 1) is not limited to this.

The assembly of the connector 1 may be performed in the order of the movable member 40, the signal terminal 20B, and the shield plate 50, for example, after mounting the signal terminal 20A and the ground terminal 30 at the same time. The shield plate 50, the signal terminal 20A and the ground terminal 30, the movable member 40, and the signal terminal 20B may be performed in this order.

Although the flat conductor is inserted into the connector which concerns on this embodiment in the direction parallel to a circuit board, the connector to which this invention is applied is not limited to this, For example, it has the opening part which a housing opens upwards, It may be a so-called vertical (vertical type) connector in which the conductor is inserted into the opening from above in the direction perpendicular to the circuit board.

≪ Second Embodiment >

In the connector described in the first embodiment, the signal terminal and the ground terminal have an upper arm portion and a lower arm portion, both arm portions are connected by a connecting portion at a longitudinal intermediate position thereof, and a balanced conductor between both arm portions in front of the connecting portion. And a connector having a so-called back flip terminal that presses the flat conductor at the front end of the lower arm part by inclining the upper arm part by the action of the movable member behind the connecting part and pressurizes the flat conductor at the front end of the lower arm part. . In contrast, the present embodiment shows that the present invention can be applied as a connector having a front flip terminal. The connector according to the present embodiment is different from the connector of the first embodiment in that the shape of the terminal and the movable member are formed so as to be free to rotate on the front end side, and thus the connector and the movable member will be described. .

FIG. 5 is a cross-sectional view at the position of the ground terminal of the connector according to the present embodiment, FIG. 5 (A) shows a state in which the movable member is in the open position, and FIG. 5 (B) is in the closed position. The connector of this embodiment has the housing 60, the signal terminal (not shown), the ground terminal 70, the movable member 80, and the shield plate 90. As shown in FIG.

The housing 60 has a rear wall 61 and a lower wall 62 in the terminal arrangement range. The region in front of the rear wall forms a space 63 that is open upward, and the movable member 80 is disposed in the space 63. On the inner surfaces of the rear wall 61 and the lower wall 62, an L-shaped terminal insertion groove 64 extending in a direction perpendicular to the terminal arrangement direction is formed. The rear wall 61 is formed with a hole 65 penetrating in the front-rear direction at the lower portion. The housing 60 is equipped with a shield plate 90 covering the upper surface of the housing 60.

The ground terminal 70 has an upper arm portion 71, a lower arm portion 72, and a connecting portion 73 that connects both arm portions. Unlike the first embodiment, the connecting portion 73 connects the upper arm portion 71 and the lower arm portion 72 at both rear portions. The upper arm portion 71 includes an inverted U-shaped rotational motion guide portion 71A for guiding rotational movement of the shaft portion of the movable member 80 on the front end side, and a contact protrusion 71B protruding from the upper edge at an intermediate position in the front-back direction. Have The lower arm portion 72 has a connecting portion 72A and a pinned portion 72B on the front end side. In addition, the ground terminal 70 has a flexible branch arm portion 72D branched from the base portion 72C connected to the connecting portion 73 in the lower arm portion 72 and extending forward. The front end of the branch arm part 72D is located behind the rotational motion guide part 71A of the upper arm part 71, and the contact part 72E which protrudes upward is formed in the front end. Moreover, the projection part 72F which extends into the hole part 65 of the housing 60 toward the back from the base 72C is formed, and is formed in the inner wall surface of the hole part 65 at the upper edge of the projection part 72F. The protruding press-fit portion 72F-1 is formed.

The ground terminal 70 is pressed against the terminal holding groove 64 of the housing 60 from the left side, and the lower arm portion 72 and the connecting portion 73 are supported by the terminal holding groove. Moreover, while the fixing part 72B is fitted in the left end part of which the thickness of the lower wall 62 is thin, the projection part 72F of the ground terminal 70 is press-fitted to the hole part 65 of the housing 60, and the hole As the press-fitting portion 72F-1 is dug into the inner wall surface of the portion 65, the ground terminal 70 is more reliably held. As can be seen from FIG. 5A, in the state where the movable member 80 is in the open position, the contact protrusion 71B forms a gap between the shield plate 90 and the shield plate 90. It is not in contact with (90).

In the present embodiment, the ground terminal is provided with the connecting portion and the fixed portion at the front end side. Instead, the connecting terminal and the fixed portion may be formed to extend out of the housing at the rear end side.

The signal terminal (not shown) in this embodiment is substantially the same shape as the ground terminal 70, and differs from the ground terminal 70 in that the contact protrusion part is not formed in the upper arm part.

In this embodiment, the signal terminal and the ground terminal 70 are arranged such that the ground terminal 70 is mixed, for example, in the arrangement of the signal terminals.

The movable member 80 has the same basic structure as the movable member 40 in 1st Embodiment, and has the operation part 81 which receives the operation force for rotational motion, and the shaft part 82 located in the rotational motion center. . The movable member 80 is disposed in the space 63 of the housing 60 and is about 90 degrees counterclockwise from an open position in a vertically long posture shown in FIGS. 5A and 5B. Between the closed positions which rotate and take a horizontally long posture, it is possible to rotate freely about the shaft part 82. In the attitude | position of the opening position shown to FIG. 5 (A), 5 (B), in the said movable member 40, the part extended upward from the space 63 of a housing | casing becomes the operation part 81, and this operation part ( 81) receives the operating force for the rotational movement.

The movable member 80 is a slit-shaped groove portion that allows the rotational movement support portion 71A of the upper arm portion 71 of the ground terminal 70 to enter the position corresponding to each ground terminal 70 in the terminal arrangement direction. 81A is formed, and the island-shaped shaft portion 82 is formed to connect the groove inner wall surface in the groove portion 81A. The cross section perpendicular to the terminal arrangement direction of the shaft portion 82 has a shape in which the lower portion of the circular shape is well formed in the state where the movable member 80 is in the open position, and in FIGS. 5 (A) and 5 (B) As can be appreciated, the rotary motion is guided to the rotary motion guide portion 71A of the ground terminal 70. Moreover, also in the position corresponding to each signal terminal in the terminal arrangement direction, the movable member 80 is provided with the slit-shaped groove part which allows entrance of the rotational motion support part of the upper arm part of a signal terminal, and the groove inner wall surface in those groove parts. Isle-shaped shaft portion is formed so as to connect the.

When the movable member 80 rotates toward the closed position, the movable member 80 downwards the balanced conductor F at the maximum contact pressure at the corner portions 81B of the movable member 80 during the rotary movement. At this time, the shaft portion 82 pushes the rotational motion guide portion 71A of the ground terminal 70 upward by the reaction force from the balanced conductor F. As shown in FIG. As a result, the upper arm part 71 of the ground terminal 70 is elastically deformed upwards, and the contact protrusion 71B formed in the upper edge of the upper arm part 71 contacts the shield plate 90. In addition, when the movable member 80 rotates and reaches the closed position, the pressurization of the balanced conductor due to the maximum contact pressure by the corner portion 81B is released, but as shown in FIG. Since the state in which the balanced conductor is pressed by the contact pressure by the lower surface of the movable member 80 in B) is maintained, the contact protrusion 71B of the upper arm portion 71 contacts the shield plate 90 so that the ground terminal 70 can be contacted. And the shield plate 90 are kept electrically conductive.

Also in the connector 1 'which concerns on this embodiment, when the movable member 80 is in an open position, since the ground terminal 70 and the shield plate 90 do not contact, the shield plate 90 is carried out at the time of connector assembly. ) Does not generate stress, and the shield plate 90 can be mounted, and thus the connector 1 'can be easily assembled. Moreover, even at the time of reflow mounting of the connector 1 'with respect to the circuit board, no stress is generated in the shield plate 90, and the shield plate 90 and the housing 60 are not deformed by heating. . Therefore, when the connector 1 'and the balanced conductor F are connected, that is, when the movable member 80 is moved to the closed position, a good contact state between the ground terminal 70 and the shield plate 90 can be ensured. have.

Moreover, also in this embodiment, the modification described in 1st Embodiment is applicable.

1, 1 'connector
10, 60 housing
20, 20A, 20B signal terminal
30, 70 ground terminal
31, 71 Upper arm part (movable arm part)
32, 72 lower arm section (fixed arm section)
33, 73 connections
34 Pressing part
35 water pressure
36, 71B contact protrusion
40, 80 movable members
42C cam section
50, 90 shield plate

Claims (5)

An electrical connector for a circuit board disposed on a circuit board and electrically connecting the balanced conductor and the circuit board, the electrical connector having a metal signal terminal and a movable arm portion extending in the insertion and extraction direction of the balanced conductor. Increasing the contact pressure between the flat conductor and the terminal group from the housing of the electrical insulator holding the terminal group including the terminals, the plurality of signal terminals and the ground terminal, and an open position allowing the flat conductor to be inserted into the opening of the connector. An electrical connector for a circuit board comprising a movable member movable toward a closed position and a shield plate mounted to the housing so as to cover at least a part of the housing over a terminal arrangement range, wherein the movable member is moved to the closed position. It has a cam part which pushes and moves elastically the movable arm part of a ground terminal at the time of movement. And said ground terminal, said movable member when in the closed position, an electrical connector for a circuit board, characterized in that the forced contact with an elastic displacement of the movable arm portion to the shield plate cam. The method of claim 1,
The cam part of a movable member is located under the movable arm part of a ground terminal, and when the movable member moves to a closed position, the electrical connector for circuit boards which push up the movable arm part and elastically displace the movable arm part. The method according to claim 1 or 2,
The movable arm part of a ground terminal is a circuit board electrical connector in which the contact part with a shield plate is formed as a protrusion part. The method according to any one of claims 1 to 3,
At least one of the ground terminals of the plurality of ground terminals is integrated with the shield plate and is formed as one member for an electrical connector for a circuit board. The method according to any one of claims 1 to 4,
The housing has an opening which is opened forward and into which the balanced conductor is inserted in a direction parallel to the circuit board, the shield plate is mounted to the housing so as to cover the upper portion of the housing, and the ground terminal is located below the movable arm portion. And a fixed arm portion extending in a direction parallel to the movable arm portion and fixed to the housing, and a connecting portion connecting the movable arm portion and the fixed arm portion at a longitudinal intermediate position, wherein the movable arm portion includes a balanced conductor. The pressurizing portion pressurized from above is provided on the front end side of the connecting portion, and has a hydraulic pressure receiving portion receiving the force upward from the cam portion of the movable member on the rear end side of the connecting portion, and the cam portion of the movable member is Located below the portion, the movable arm portion, when the movable member is moved toward the closed position, It is pushed up by the cam part and elastically displaces in the shape of a lever with the said connection part as a support point, and a press part is displaced downward, when the said movable member is in the closed position, the press part presses a flat conductor from the upper side, and it is rearward behind a connection part. The electrical connector for a circuit board which the upper edge part of the side contacts a shield plate.

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