CN102332648B - Electrical connectors for flat conductors - Google Patents

Abstract

An electric connector for a flat conductor comprises two kinds of terminals with different assembling directions towards a shell and can greatly reduce position error of cam parts. In the flat type electric connector for the conductor, an attaching part (38A) of a second terminal (30) attached with the cam is arranged at a position which is the same with a lower edge of a position limiting part (18B) or therebelow, an attaching part (28A) of a first terminal (20) is arranged above the attaching part (38A) of the second terminal (30), a first cam part (55) and a second cam part (56) of a movable construction member (3) can rotate around a common axes, the movable construction member (3) is provided with upper cam edges (55B), (56B) and lower cam edges (55A), (56A) which are abutted against upper arm parts and lower arm parts of the first terminal and the second terminal, the lower cam edges (55A), (56A) of the first cam part (55) and the second cam part (56) can form that when the movable construction member (3) turns towards a closed position, the difference of radius lengths of the cams which are movably contacted with the lower arm part within a movable contacting range and in the optional same angle positions is a fixed value.

Description

Electrical connectors for flat conductors

technical field

The invention relates to an electrical connector for flat conductors.

Background technique

In the connector disclosed in Patent Document 1, the terminal has an upper arm portion and a lower arm portion extending in the front-rear direction, and is formed in a horizontal H shape in which both are connected by a connecting portion. In this Patent Document 1, two types of terminals are formed, both of which form a horizontal H shape, one type of terminal is assembled toward the housing from the front, and the other type of terminal is assembled toward the housing from the rear. Due to the difference in the assembling direction, the details including the connecting portion for connecting to the circuit board are different, but the two types of terminals have basically the same shape in terms of forming a horizontal H shape. In the assembled state toward the housing, insert the FPC as the object to be connected between the upper arm and the lower arm on the rear side of the two types of terminals, and operate the The movable member (operating member) of the cam part located between the upper arm part and the lower arm part corresponding to each terminal. The cam part lifts the front part of the upper arm part of the two terminals. The position is the fulcrum to elastically displace the rear portion of the upper arm portion downward. The elastic deformation of the rear portion of the terminal presses the flat conductor downward, thereby making the connection to the rear portion of the lower arm portion of the terminal reliable.

In this Patent Document 1, the cam portion of the movable member receives a reaction force from below when the movable member is operated, and by this reaction force, the upper edge of the cam portion is aligned with the upper arm portion of the terminal for both types of terminals. Lift it upwards with the front in direct contact. In contrast, the lower edge of the cam directly presses the lower arm of the terminal for one type of terminal and receives an upward reaction force, while for the other type of terminal, it presses the lower arm of the other terminal. The shell that remains is subjected to a reaction force.

Patent Document 1: Japanese Patent No. 4279823

In Patent Document 1, among the cam portions of the movable member, the cam portion whose position corresponds to one type of terminal abuts only the terminal, and the cam portion whose position corresponds to the other type of terminal abuts on the terminal at its upper edge. It abuts against the housing at the lower edge. Therefore, the cam portion corresponding to the position of the other type of terminal is supported and positioned by two different members in the vertical direction. Generally speaking, components will have manufacturing errors and assembly errors. Therefore, the cam portion may have a position error resulting from the accumulation of the errors of the above two components. This increases the error in the lifting amount of the front portion of the upper arm portion of the terminal, and as a result, increases the error in the amount of elastic displacement at the rear portion of the upper arm portion. The error in the amount of elastic displacement affects the contact pressure between the flat conductor and the terminal, resulting in a difference in contact pressure between one type of terminal and another type of terminal. This reduces the reliability of the connection state between the terminal and the flat conductor.

Contents of the invention

The present invention is made in view of the above circumstances, and its object is to provide an electrical connector for flat conductors, which has two types of terminals with different assembly directions toward the housing, and for the two types of terminals, the cam portion of the movable member is only in contact with the two types of terminals. The terminals abut against each other, thereby minimizing the position error of the cam portion.

The electrical connector for flat conductors of the present invention has: a plurality of terminals, the plurality of terminals are made by maintaining the flat plate surface of the metal plate, and the upper arm portion extending in the front-rear direction is connected by the connecting portion in the middle portion in the front-rear direction. It is connected with the lower arm; the housing is formed with a terminal slot for arranging and holding the terminals in a direction at right angles to the plate surface of the terminal, and a receiving opening for a flat conductor opening toward the rear and a movable member capable of moving between an open position where the flat conductor can be inserted toward the receiving opening and a closed position where the inserted flat conductor is pressed by the above-mentioned upper arm. There are two types of terminals: a first terminal attached to the terminal slot from the front side and a second terminal attached to the terminal slot from the rear side, and an island-shaped position regulating portion is provided at least on the terminal slot where the second terminal is attached , when the movable member is located at the open position, the flat conductor is inserted into the above-mentioned receiving opening, and when the movable member moves toward the closed position, the cam portion formed on the movable member connects the first terminal and the second terminal to each other. The front portion of each upper arm portion is lifted upward, and the rear portion of the upper arm portion is elastically deformed downward, thereby pressing the flat conductor downward.

In this electrical connector for flat conductors, in the present invention, the position of the lower arm portion of the second terminal in front of the connecting portion corresponds to the above-mentioned position restricting portion, and the position where it abuts against the cam is in the upper and lower positions. The direction is located at the same position as the lower edge of the position restricting portion or a position below it.

The portion where the lower arm portion of the first terminal comes into contact with the cam portion formed in the front portion of the connecting portion is located above the contact portion of the second terminal in the vertical direction, and the cam portion of the movable member The position corresponding to the first terminal and the second terminal in the terminal arrangement direction has a first cam part and a second cam part respectively, and the first cam part and the second cam part rotate around a common axis, and have a The upper and lower cam edges of the upper and lower arms of the terminal and the second terminal abut against each other, and the lower cam edges of the first and second cams are formed so that when the movable member is opened from the When the position is turned toward the closed position, the difference between the cam radius lengths at any same angular position within the sliding contact range with the lower arm is constant.

In the connector of the present invention having this structure, the first terminals are attached to the corresponding terminal grooves from the front and the second terminals are respectively attached to the housing from the rear. The terminal groove for the second terminal is provided with an island-shaped position restricting portion, and the connection portion connecting the upper arm portion and the lower arm portion of the second terminal is located behind the position restricting portion in the front-rear direction, that is, In other words, the position of the part of the lower arm part in front of the connecting part corresponds to the position restricting part. The position of the cam-abutting portion formed on the upper edge of the front portion is the same as or lower than the lower edge of the position regulating portion. Therefore, when the second terminal is attached from the rear, the position restricting portion does not become an obstacle to the front portion of the lower arm portion forming the contact portion, and the second terminal can be attached from the rear. On the other hand, since the first terminal is attached from the front, it does not matter whether there is a corresponding position restricting portion or not, and the position where the first terminal contacts the cam is higher than the position where the second terminal contacts.

The movable member has a first cam portion and a second cam portion respectively corresponding to the first terminal and the second terminal, and the two cam portions rotate around a common axis. Therefore, the distance from the axis line of the first cam portion and the second cam portion to the respective contact portions of the first terminal and the second terminal is larger in the second terminal than in the first terminal. In the present invention, the difference in the cam radius of the first cam portion and the second cam portion at the lower cam edge is set according to the distance difference. Therefore, within the range of sliding contact, during rotation, the above-mentioned upper cam edge and the lower cam edge are in direct contact with the terminals. Therefore, the manufacturing and assembly errors between the movable member and the case can be reduced in relation to the position of the cam portion, and the contact pressure between the flat conductor and the terminal can be reduced, and the error between the two terminals can be reduced, and the contact can be stabilized. .

In addition, in the present invention, in the above situation, the axis of the above-mentioned cam can be positioned upward, and even if the length of the operation portion of the movable member is reduced, the movable member can be positioned at the open position. The upward protrusion of the operation part outside the housing is ensured to be of a size that enables the operability of the movable member to be good, and the protrusion of the connector in the closed position state does not increase in the front-rear direction to the outside of the housing. Miniaturization in the closed position, which is the state in which the connector is used.

In the present invention, each lower cam edge of the first cam portion and the second cam portion of the movable member can be formed in an arc shape. In this case, the lower cam edges of the first cam portion and the second cam portion are formed as part of concentric circles having a cam radius difference. In the present invention, the first cam portion and the second cam portion may be formed by curves other than circular arcs as long as they have the above-mentioned cam radius.

In the present invention, the lower arm portion of the first terminal has a concave curved portion along the lower cam edge within the sliding contact range of the first cam portion, and the lower arm portion of the second terminal has a straight line extending in the front-rear direction. department. The concave curved portion and the linear portion formed in this way support the lower cam flanges of the corresponding first cam portion and the second cam portion, respectively. The concave bent portion of the first terminal is used to prevent the cam from falling off, and the straight portion of the second terminal allows the second terminal to be inserted from behind.

As described above, in the present invention, for the two types of terminals attached to the housing from the front and the rear, the abutment portion that abuts against the cam portion of the movable member for pressing the flat conductor is formed to have a difference in height. , to allow the above-mentioned installation, so the above-mentioned cam part can be supported only by the terminal, as a result, the manufacturing error and assembly error can be controlled to a minimum, the error of the pressing force of the terminal toward the flat conductor can be eliminated, and the terminal and flat conductor can be improved. connection reliability between type conductors. In addition, in the present invention, the axis line of the above-mentioned cam can be positioned upward, and even if the length of the operating portion of the movable member is reduced, the operating portion can be directed toward the outside of the housing when the movable member is in the open position. The upward protrusion of the movable member is ensured to be of such a size that the operability of the movable member is good, and the protrusion of the connector in the closed position in the front and rear direction does not become large, and the closed position, that is, the connector can be realized. Miniaturization in use.

Description of drawings

FIG. 1 is a perspective view showing the overall appearance of a connector according to one embodiment of the present invention.

Fig. 2 is a sectional view of the connector of Fig. 1 when the movable member is in the open position, Fig. 2(A) is a sectional view at the first terminal, Fig. 2(B) is a sectional view at the second terminal, Fig. 2(C) is a cutaway view of the fitting.

Fig. 3 is a sectional view of the connector of Fig. 1 when the movable member is in the closed position, Fig. 3(A) is a sectional view at the first terminal, Fig. 3(B) is a sectional view at the second terminal, Fig. 3(C) is a cutaway view of the fitting.

(Symbol Description)

1: connector

3: Movable components

10: shell

16: Storage opening

18A: Position restriction department

20: first terminal

21: upper arm

22: lower arm

23: Connecting part

28A: Contact part

30: Second terminal

31: upper arm

32: lower arm

33: Connecting part

38A: Contact part

55: First cam unit

55A: Lower cam flange

55B: Upper cam flange

56: Second cam part

56A: Lower cam flange

56B: Upper cam flange

F: flat conductor

Detailed ways

One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1 , reference numeral 1 denotes a connector of the present embodiment, and reference numeral F denotes a flat conductor connected to the connector 1 .

The flat conductor F has a connecting portion connected to the above-mentioned connector 1 at its front end (the upper right edge in the figure), and extends longly toward the rear. Illustration omitted. In the present embodiment, the above-mentioned flat conductor F removes the covering portion on the upper surface of the tip portion to expose the connection circuit portion F1 to form a connection portion. In order to improve the strength when connecting with the connector, a reinforcing sheet F2 is provided on the lower surface of the connecting part.

At the connection portion of the above-mentioned flat conductor F, engaged portions F3 are formed by notches on both side edges in the width direction. Letting the claw-shaped locking part of the accessory described later enter and lock with the notch-shaped locked part F3 helps to prevent the flat conductor F from falling off.

The connection circuit portion F1 of the connection portion of the flat conductor F is provided with spacers F4 formed on each of the plurality of wiring portions arranged in the width direction, and the spacers F4 are alternately arranged front and rear in a zigzag shape.

On the other hand, the connector 1 is composed of a connector body 2 and a movable member 3 movably supported by the connector body 2 .

The connector main body 2 has: a housing 10 made of an electrical insulating material; two types of terminals, the first terminal 20 and the second terminal 30, which are made of a metal plate and held by the housing 10; Fitting 40 made of sheet metal and held by housing 10 .

The housing 10 has a roughly rectangular parallelepiped shape that is longer in the width direction of the above-mentioned flat conductor F and has a smaller height dimension. alternating in direction. The two first terminal grooves 11 and the second terminal grooves 12 are respectively corresponding to the first terminal 20 and the second terminal 30 for their insertion and holding, forming an arrangement range of the terminals in the width direction. On the outside of the arrangement range of the terminals, the fitting groove 13 for holding the fitting 40 is formed in the same slit shape as the terminal grooves 11 and 12 , extending in the front-rear direction.

The above-mentioned first terminal 20, second terminal 30 and accessories 40 are made by maintaining the flat surface of the metal plate, and related to this, the first terminal groove 11 and the second terminal groove 12 for inserting and holding these components And the slot width of fitting groove 13 on the direction of terminal arrangement is also formed approximately equal to the board thickness of first terminal 20, second terminal 30 and fittings 40, in Fig. 2 (A), Fig. 2 (B) and Fig. 2 (C ), let the direction at right angles to the paper surface be the above-mentioned groove width.

As shown in Figure 2(A), Figure 2(B) and Figure 2(C) respectively, the first terminal groove 11, the second terminal groove 12 and the accessory groove 13 are between the upper wall 14 and the bottom wall 15 of the housing 10 Intersections are formed in the front-back direction (right and left in the figure). The rear parts of the first terminal groove 11, the second terminal groove 12, and the accessory groove 13 are communicated with each other at the central position in the height direction by a communication groove extending in a direction at right angles to the paper surface of FIG. The receiving opening 16 is provided, and the connecting portion of the flat conductor F can be introduced into the receiving opening 16 . The rear areas of the first terminal groove 11, the second terminal groove 12, and the fitting groove 13 are separated up and down by the above-mentioned receiving opening 16 to form a first terminal upper groove 11A, a first terminal lower groove 11B, and a second terminal upper groove 12A. And second terminal lower slot 12B, fitting upper slot 13A and fitting lower slot 13B.

The above-mentioned first terminal slot 11 , second terminal slot 12 and fitting slot 13 are also communicated at their front parts. That is to say, the front parts of the first terminal slot 11 , the second terminal slot 12 and the accessory slot 13 communicate through the open space 17 formed above the bottom wall 15 of the housing 10 . Therefore, at the front part, the upper wall 14 forms a gap, and this open space 17 can be arranged and rotated by the movable member 3 . As shown in Figure 2(C), the above-mentioned upper wall 14 also has a notch in the rear part at the position of the fitting groove 13 on both ends in the terminal arrangement direction, so that the corresponding part of the fitting 40 there can face upward Fully displace.

In the above-mentioned first terminal groove 11, second terminal groove 12 and accessory groove 13, the parts between the above-mentioned open space 17 at the front and the receiving opening 16 at the rear in the front-rear direction are respectively provided with Island-shaped position regulating portions 18A, 18B, and 18C formed between the upper wall 14 and the bottom wall 15 connect the facing inner surfaces of the respective grooves to each other. The position regulating parts 18B and 18C provided in the second terminal groove 12 and the fitting groove 13 are located at the same position in the front-rear direction and are located in front of the position regulating part 18A provided in the first terminal groove 11 .

In the terminal arrangement direction, on the part of the bottom wall 15 corresponding to the above-mentioned first terminal groove 11, second terminal groove 12 and accessory groove 13, there are formed for fixing the first terminal 20, the second terminal 30 and the accessory 40 described later. the fixed part. The fixing part 19A for the first terminal groove 11 is formed by making the front end of the bottom wall 15 into a tapered part, and the fixing parts 19B and 19C for the second terminal groove 12 and the accessory groove 13 are formed by making the bottom wall 15 The rear end portion is formed by a tapered portion.

The first terminal 20, the second terminal 30, and the fitting 40 that are respectively inserted into the above-mentioned first terminal groove 11, second terminal groove 12, and accessory groove 13 and held are all made of a flat plate surface of a metal plate and formed into a substantially horizontal H shape. shape, respectively having upper arm parts 21, 31, 41 and lower arm parts 22, 32, 42, both of which are connected by connecting parts 23, 33, 43 located in the middle part in the front-rear direction. The connecting portion 23 of the first terminal 20 is located in front of the corresponding position restricting portion 18A, and the connecting portions 33, 43 of the second terminal 30 and the accessory 40 are located behind the corresponding position restricting portions 18B, 18C.

As shown in FIG. 2(A), although the upper arm portion 21 of the first terminal 20 extends to the vicinity of the front end of the housing 10, it only extends to the middle portion toward the rear. In this upper arm part 21, a pressure receiving arm part 24 is formed in front of the connection part 23, and the flexible arm part 25 from the rear is positioned upward through the inclined part. The pressure-receiving arm portion 24 has a pressure-receiving concave portion 24A formed at its lower edge, and a pressing protrusion 25A protruding downward is provided at the rear end of the flexible arm portion 25 . When the upper arm portion 21 receives an upward force from the movable member 3 to be described later, the flexible arm portion 25 bends and tilts downward with the position of the connecting portion 23 as a fulcrum based on the principle of leverage.

The rear portion of the lower arm portion 22 of the first terminal 20 extends to approximately the same position as the flexible arm portion 25 of the upper arm portion 21 in the front-rear direction, and the front portion of the lower arm portion 22 of the first terminal 20 is more It extends further forward and its front end protrudes outside the casing. The lower arm portion 22 has a front fixed arm portion 26 and a rear fixed arm portion 27 in the front and rear relative to the position of the connecting portion 23 . The front fixed arm portion 26 has a cam support portion 28 protruding upward in the middle portion in the front-rear direction, and a connecting portion 29 protruding forward and outward of the housing.

The upper edge of the cam support portion 28 reaches a position above the lower edge of the island-shaped position regulating portion 18A of the housing 10 , and a substantially L-shaped upper edge forms a cam contact portion 28A. This cam abutment portion 28A has a straight edge portion 28A- 1 extending in the front-rear direction, and an arcuate portion 28A- 2 formed as a corner. This arcuate portion 28A- 2 is slightly recessed in the up-down direction than the above-mentioned straight edge portion 28A- 1 .

The connecting portion 29 bends downward and has a lower edge slightly lower than the bottom surface of the bottom wall 15 of the housing 10 , and the lower edge surface is in contact with the circuit surface corresponding to the circuit board and can be soldered. A groove-shaped fixed portion 29A is formed on the rear edge side of the connection portion 29, and the fixed portion 29A is pressed into the tapered fixed portion 19A formed on the bottom wall 15 of the casing 10, thereby It plays a role of fixing the first terminal 20 toward the housing 10 .

The rear fixing arm portion 27 of the lower arm portion 22 of the first terminal 20 extends rearward from the position of the connecting portion 23 to a position corresponding to the pressing protrusion 25A of the upper arm portion 21 . At the rear end of the rear fixing arm portion 27, a contact portion 27A protruding upward facing the pressing protrusion 25A is provided. In addition, locking projections 27B protruding upward are formed on the rear fixing arm portion 27 at positions corresponding to the position regulating portions 18A of the housing 10 in the front-rear direction.

The first terminal 20 formed in the above manner is inserted toward the first terminal groove 11 from the front to the rear. When inserted to a predetermined position, the rear fixed arm portion 27 of the lower arm portion 22 penetrates between the bottom wall 15 of the housing 10 and the island-shaped position limiting portion 18A, and is formed on the locking protrusion 27B of the rear fixed arm portion 27 The lower edge of the position limiting portion 18A is bitten, and the fixed portion 29A of the front fixing arm portion 26 is fitted into the fixing portion 19A of the bottom wall 15 of the housing 10 to fix the first terminal 20 to prevent the first terminal 20 from falling off.

As shown in FIG. 2(B), the upper arm portion 31 of the second terminal 30 extends forward to approach the front end of the housing 10 and extends rearward to the rear end of the housing 10 . In the upper arm portion 31 , a pressure-receiving arm portion 34 is formed in front of the connection portion 33 , and a flexible arm portion 35 is formed behind it. The pressure-receiving arm portion 34 has a pressure-receiving concave portion 34A formed at its lower edge, and a pressing protrusion 35A protruding downward is provided at the rear end of the flexible arm portion 35 . When the pressure-receiving concave portion 34A of the upper arm portion 31 receives an upward force from a movable member described later, the flexible arm portion 35 bends downward with the position of the connecting portion 33 as a fulcrum to incline according to the principle of leverage.

The front part of the lower arm part 32 of the second terminal 30 extends to approximately the same position as the pressure receiving arm part 34 of the above-mentioned upper arm part 31 in the front-rear direction, and the rear part faces backward than the flexible arm part 35 of the upper arm part 31. Extended, and its rear end protrudes outside the shell. The lower arm portion 32 has a front fixed arm portion 36 and a rear fixed arm portion 37 in front and rear positions relative to the connection portion 33 . The front fixed arm portion 36 has a cam support portion 38 provided at its front portion.

The position of the upper edge of the cam support portion 38 of the front fixed arm portion 36 is the same as or lower than the position of the lower edge of the island-shaped position regulating portion 18B of the housing 10, forming a cam abutment with a linear edge. Site 38A.

On the front fixed arm portion 36, a locking protrusion protruding upward is formed at a position corresponding to the position regulating portion 18B of the housing 10 between the cam contact portion 38A and the coupling portion 33 in the front-rear direction. 36B.

As described above, in the above-mentioned second terminal 30 , the connection portion 39 is provided at the rear end portion opposite to the connection portion 29 of the first terminal 20 in the front-rear direction.

The above-mentioned connecting portion 39 protruding from the outside of the housing is arranged at the rear end of the rear fixing arm portion 37 to bend downwards, thereby having a lower edge slightly below the bottom surface of the bottom wall 15 of the housing 10, and the lower edge surface is in contact with the bottom surface of the housing 10. The corresponding circuit surface of the circuit substrate can be soldered and connected. The connecting portion 39 is formed with a groove-shaped fixed portion 39A on its front edge side, and the fixed portion 39A is pressed into the tapered fixing portion 19B of the housing 10 so as to move the second terminal 30 toward the fixed portion 19B. Housing 10 is fixed.

On the rear fixed arm part 37 of the lower arm part 32 of the above-mentioned second terminal 30, at a position corresponding to the pressing protrusion 35A slightly forward than the connecting part 39, there is provided an anti-pressing protrusion 35A opposite to the pressing protrusion 35A. Contact portion 37A protruding upward.

The second terminal 30 formed in the above manner is inserted toward the second terminal groove 12 from the rear to the front. When inserted to a predetermined position, the front fixed arm portion 36 of the lower arm portion 32 penetrates between the bottom wall 15 of the housing 10 and the island-shaped position limiting portion 18B, and the locking protrusion 36B formed on the front fixed arm portion 36 bites. Insert the lower edge of the position limiting portion 18B, and the fixed portion 39A of the rear fixing arm portion 37 fits into the fixing portion 19B of the bottom wall 15 of the housing 10 to fix the second terminal 30 to prevent the second terminal 30 from falling off.

As shown in FIG. 2(C), the fitting 40 is formed in a shape similar to the second terminal 30 . When compared with the second terminal 30 , the difference lies in that although the locking portion 45A at the rear end of the upper arm portion 41 is formed in the same shape as the pressing protrusion 35A of the second terminal 30 , it is formed larger, and is formed on the lower arm portion 42 . There is no portion corresponding to the contact portion 37A of the second terminal 30 at the rear end thereof. Others are the same as the second terminal 30, so adding "10" to the symbol of the second terminal 30 becomes a symbol starting with "40", and its description is omitted.

The locking portion 45A of the fitting 40 is formed in a large hook shape and protrudes downward, its front edge is approximately at right angles to the front-rear direction, and its rear edge forms an oblique edge toward the lower end. The flexible arm portion 45 of the upper arm portion 41 on which the engaging portion 45A is formed is inclined slightly upward toward the rear, and is elastically deflected so that the engaging portion 45A pressed by the front end of the inserted flat conductor F is further inclined upward. , so that further insertion of the flat conductor F to a predetermined position can be performed. The above-mentioned rear notched portion of the upper wall 14 of the housing 10 allows this elastic deflection of the flexible arm portion 45 upward.

In the connector main body 2 that holds the first terminal 20, the second terminal 30, and the fitting 40 in the housing 10, the movable member 3 is movable, and in this embodiment, is supported so as to be rotatable. .

As shown in FIG. 1 , the movable member 3 is made of the same electrically insulating material as the case 10 as a member extending over substantially the entire width of the case 10 .

The movable member 3 is supported rotatably between an open position shown in FIG. 2 and a closed position shown in FIG. 3 . In FIG. 2 , the axis of rotation of the movable member 3 is located at the lower half of the movable member 3 , which is housed in an open space 17 formed at the front of the housing 10 . In FIG. 2 , outside the open space 17 , the upper half protruding upward from the upper wall 14 of the housing 10 serves as an operating portion 51 for the user to rotate and operate the movable member 3 .

In the lower half of FIG. 2 of the above-mentioned movable member 3, in the width direction (terminal arrangement direction) of the movable member 3, at positions corresponding to the first terminal 20, the second terminal 30 and the accessory 40, the Slit-shaped first groove 52 , second groove 53 , and third groove that allow the front parts of the upper arms 21 , 31 , 41 of the first terminal 20 , second terminal 30 , and fitting 40 to enter are formed. 54. Therefore, the groove widths of the first groove portion 52, the second groove portion 53, and the third groove portion 54 (the width between the inner surfaces of the grooves in a direction perpendicular to the paper surface) are wider than the first terminal 20, the second terminal 30, and the first terminal 20. Each plate thickness of the fitting 40 is slightly larger. In the first groove portion 52 , the second groove portion 53 , and the third groove portion 54 , a first cam portion 55 , a second cam portion 56 , and a third cam portion 57 that connect groove inner surfaces to each other are provided, respectively.

As shown in Figure 2 (A), the first cam portion 55 provided at the first groove portion 52 corresponding to the first terminal 20 is located at the lower part of the above-mentioned first groove portion 52 of the movable member 3 in the open position, with a lateral direction. Long oblong cross-section. The rotation center X of the first cam portion 55 is located on the extension line of the rotation axis of the movable member 3 on the curvature center of the arc portion on the right side of the oblong cross section. Therefore, a straight line whose one end is the above-mentioned rotation center X and whose other end is any point of the above-mentioned circular arc portion becomes a cam radius. Among the left and right arc portions of the first cam portion 55 , the right arc portion where the rotation center X exists forms a lower cam edge 55A, and the left arc portion forms an upper cam edge 55B. The lower cam edge 55A forms a sliding contact range with which the cam abutting portion 28A slides. The upper cam edge 55B and the lower cam edge 55A are separated by a sufficient distance so that when the first cam portion 55 rotates around the rotation center X to the closed position in FIG. 3 , the upper arm portion 21 of the first terminal 20 is pressed. The arm portion 24 is elastically displaced when the pressure receiving concave portion 24A is pressed upward. Although the above-mentioned lower cam edge 55A has a slight gap with the concave arc-shaped portion 28A-2 of the cam abutment portion 28A at the open position shown in FIG. 2(A), as it moves toward the closed position, Rotation is accommodated in the arc-shaped portion 28A- 2 and the position of the rotation center X is stabilized.

As shown in FIG. 2(B), the second cam portion 56 provided at the second groove portion 53 corresponding to the second terminal 30 has a lower cam edge 56A with a large circular arc on its right side, and a lower cam edge 56A on its left side. The upper cam edge 56B of a small circular arc is formed into a substantially fan shape, and the rotation center X is located at the same position as the first cam portion 55, which is the circle of the lower cam edge 56A that forms a sliding contact range with the cam contact portion 38A. The center of curvature of the arc. With respect to the above-mentioned rotation center X, the cam abutment portion 38A of the cam support portion 38 is located below the straight edge portion 28A-1 of the cam abutment portion 28A of the cam support portion 28 of the first terminal 20. The cam radius of the lower cam edge 56A contacted by the cam abutting portion 38A is larger than that of the first cam portion 55 , and has a certain cam radius difference from the first cam portion 55 at any angular position. Like the upper cam edge 55B of the first cam portion 55 , the upper cam edge 56B of the second cam portion 56 is separated from the lower cam edge 56A by a sufficient distance so that the second cam portion 56 is centered on the rotation center X. When turning to the closed position in FIG. 3 , the pressure receiving arm portion 34 of the upper arm portion of the second terminal 30 is elastically displaced by being pressed upward by the pressure receiving concave portion 34A.

As shown in Figure 2 (C), the third cam portion 57 provided at the third groove portion 54 corresponding to the accessory 40 is substantially the same as the above-mentioned second cam portion 56 located in the second groove portion 53, and has a The lower cam edge 57A with a large circular arc has an upper cam edge 57B with a small circular arc on its left side, forming a substantially fan-shaped shape, and the rotation center X is located at the same position as the rotation centers of the first cam portion 55 and the second cam portion 56. The position is the center of curvature of the arc of the lower cam edge 57A that forms a sliding contact range with the cam contact portion 48A. With respect to the above-mentioned rotation center X, the cam abutment portion 48A of the cam support portion 48 is located on the straight edge portion 28A-1 of the cam abutment portion 28A of the cam support portion 28 of the first terminal 20 similarly to the second cam portion 56 . Therefore, the cam radius of the lower cam edge 57A in contact with the above-mentioned cam abutment portion 48A is larger than that of the first cam portion 55, and there is a certain cam radius difference at any angular position. Like the upper cam edge 55B of the first cam portion 55, the upper cam edge 57B of the third cam portion 57 and the lower cam edge 57A have a sufficient distance so that the third cam portion 57 is centered on the rotation center X. When turning to the closed position in FIG. 3 , the pressure receiving arm portion 44 of the upper arm portion of the fitting 40 is elastically displaced by being pressed upward by the pressure receiving concave portion 44A.

The function of the connector of the present embodiment having the above-mentioned structure can be exhibited as follows.

First, the connector 1 is arranged at a predetermined position on the circuit board (not shown), and the soldering and fixing part 49 of the accessory is soldered and connected to the corresponding part of the circuit board to connect the connecting part 29 of the first terminal and the second terminal. Part 39 is fixed.

For the connector 1 mounted on the circuit board in this way, as shown in FIG. 2 , the movable member 3 is brought to the open position, and the receiving opening 16 of the housing 10 is opened toward the rear to form a flat connector that can be inserted. The state of conductor F.

Next, the connecting portion of the flat conductor F is inserted forward into the above-mentioned accommodation opening 16 . The first terminal 20 is between the pressing protrusion 25A of the upper arm 21 and the contact portion 27A of the lower arm 22 , the second terminal 30 is between the pressing protrusion 35A of the upper arm 31 and the contact portion 37A of the lower arm 32 , Both are spaced slightly wider than the thickness of the connection portion of the flat conductor F, so that the connection portion of the flat conductor F can be easily inserted. However, regarding the above-mentioned accessory 40, the space between the engaging portion 45A of the upper arm 41 of the accessory 40 and the lower arm 42 is narrower than the thickness of the connecting portion of the flat conductor F, so the flat conductor F is closed at its front end. The locking portion 45A is lifted up and moved forward to a predetermined position, and the locking portion 45A enters into the notch-shaped locked portion F3 of the flat conductor F, thereby preventing the flat conductor F from falling off.

Next, as shown in FIG. 3 , the movable member 3 is rotated to the closed position. By this rotation, the first cam portion 55, the second cam portion 56, and the third cam portion 57 of the movable member 3 rotate about the rotation center X, and the lower cam edges 55A, 56A, 57A of the movable member slidably contact the corresponding first The contact parts 28A, 38A, 48A of the terminal 20, the second terminal 30 and the accessory 40, and the upper cam edges 55B, 56B, 57A will correspond to the pressure receiving recess 24A of the first terminal 20, the second terminal 30 and the accessory 40 , 34A, 44A press upward. As a result, the pressure-bearing arm portions 24, 34, 44 of the upper arm portions 21, 31, 41 of the first terminal 20, the second terminal 30, and the accessory 40 are lifted, and the flexible arm portions 25, 35, 45 are lifted according to the principle of leverage. By bending downward, the pressing protrusions 25A, 35A press the upper surface of the flat conductor F downward, and the locking portion 45A is further displaced downward to maintain its position. Therefore, the flat conductor F comes into contact with the contact portions 27A and 37A of the first terminal 20 and the second terminal 30 with a predetermined contact pressure to realize electrical connection, and passes through the locking portion 45A of the fitting 40 to reliably secure the locked portion F3. prevent shedding.

In the present invention, even in such a connector formed by assembling the first terminal 20 to the housing 10 from the front and the second terminal 30 to the housing 10 from the rear, it is set so that the corresponding first cam portion 55 and the lower cam edges 55A and 56A of the second cam portion 56 have a certain radius difference, so the first cam portion 55 and the second cam portion 56 are always in direct contact with the first terminal 20 and the second terminal 30 respectively, thus eliminating Due to the manufacturing error and assembly error caused by the presence of the case, the error between the terminals in the amount of displacement of the upper arm parts 21 and 31 becomes very small, so the contact pressure between the terminal and the flat conductor can be stabilized. In the present invention, in the first terminal 20, the abutment portion 28A that abuts on the first cam portion 55 is located above, and in the second terminal 30, since the cam radius of the second cam portion is set to be large, the The center of rotation of the cam can be positioned upward, and even if the length of the operating portion 51 of the movable member 3 is made relatively small, the operating portion can be directed upwardly outside the housing when the movable member is located at the open position. The amount of protrusion is ensured so that the operability of the movable member is good, and in the closed position, the amount of protrusion of the connector in the front-rear direction toward the outside of the housing does not increase, and the use of the connector in the closed position can be realized. state of miniaturization.

In this embodiment, preferably, in the first cam portion 55, in the open position state of FIG. At a slightly lower position, the upper part 55C, which is the upper part, is cut into a circle recessed from the lower cam edge 55A. Thereby, when the first cam portion 55 starts to rotate toward the closed position, the above-mentioned upper portion 55C will not be stuck to the upper end corner portion 28A-3 of the above-mentioned arc-shaped portion 28A-2, and can move toward the arc-shaped portion 28A-2. The range moves smoothly.

Although the lower cam edges of the first cam portion and the second cam portion are arc-shaped in the present invention, other curves are also acceptable as long as the cam radius difference at any angle is constant. In addition, the lower cam flange only needs to form an envelope in the shape of an arc or other curves over the entire range, and may form a notch in a part of the range.

In the present invention, when the connection circuit part is formed on the upper surface of the flat conductor, the first terminal and the second terminal do not need to have a contact part on the lower arm part, and the pressing part of the upper arm part can also be used as a contact part. portion and is in contact with the connection circuit portion. In addition, a terminal having a contact portion on the lower arm and a terminal having a pressing portion of the upper arm also serving as a contact portion may be mixed to form a so-called two-up-and-down contact or a staggered arrangement.

Claims (3)

1. an electrical connector has:

A plurality of terminals, the plurality of terminal is that to maintain the smooth plate face of metallic plate made, the upper arm parts that will extend to front-rear direction by linking part at the fore-and-aft direction pars intermedia and lower arm part link;

Housing, this housing is formed with the terminal groove on the rectangular direction of plate face with this terminal, this terminal being arranged and kept, towards the peristome of accommodating for flat conductive member of rear opening; And

Movable link, this movable link can move flat conductive member between the described off-position of accommodating the enable possition of peristome insertion and with described upper arm parts, the flat conductive member after inserting being pressed,

A plurality of terminals have the first terminal that is installed to described terminal groove from front side, be installed to these two kinds of terminals of the second terminal of described terminal groove from rear side, at least at the described terminal groove that the second terminal is installed, be provided with the position limitation section of island, at movable link, be positioned under the state of enable possition, flat conductive member is inserted to the described peristome of accommodating, when movable link moves towards off-position, the cam part that is formed at this movable link is lifted the front portion of each upper arm parts of the first terminal and the second terminal towards top, make the rear portion of this upper arm parts towards the below strain, thereby flat conductive member is pressed towards below,

It is characterized in that,

The position of the lower arm part of the second terminal part on the front than linking part is corresponding to described position limitation section, and this part is positioned at the position identical with the lower edge of this position limitation section or position than it on the lower with the position of cam butt on above-below direction,

The lower arm part of this first terminal and the position that is formed on than linking part the cam part butt of part on the front are positioned at the top side's in butt position of more described the second terminal position on above-below direction, the cam part of movable link position corresponding with the first terminal and the second terminal on the terminal board column direction has respectively the first cam part and the second cam part, the first cam part and the second cam part are rotated around common axis, and there is epirelief wheel rim and lower cam edge with the place ahead part butt of each upper arm parts of the first terminal and the second terminal and lower arm part, each time cam edge of described the first cam part and the second cam part forms when movable link rotates from enable possition towards off-position, with the cam radius length difference each other of any equal angular position in the sliding contact scope of lower arm part sliding contact be definite value.

2. electrical connector as claimed in claim 1, is characterized in that,

The first cam part of movable link and each time cam edge of the second cam part are with circular-arc formation.

3. electrical connector as claimed in claim 1 or 2, is characterized in that,

Have along the recessed bend of the lower cam edge in the sliding contact scope of the first cam part in the lower arm part of the first terminal, in the lower arm part of the second terminal, there is the linearity section of extending to front-rear direction.

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