Connector

Abstract

To implement stable connection.SOLUTION: A connector 3 comprises a housing 5 and a plurality of terminals 6 arranged in a width direction W, each of which has a fixation part 62, an extension part 63, and a connection part 64. Each connection part 64 comprises a connection base part 65, a first arm part 66, and a second arm part 67. The first arm part 66 includes a support part 66b and a sub arm part 66c consisting of a first sub arm part 66A and a second sub arm part 66B. The first sub arm part 66A has a first contact part 66Ap; the second sub arm part 66B has a second contact part 66Bp. The second arm part 67 has a pressing part 67p that protrudes toward a predetermined position between the first contact part 66Ap and the second contact part 66Bp. Each connection part 64 is configured so that when a partner connection body 4 is inserted between the first arm part 66 and the second arm part 67, the pressing part 67p presses the partner connection body 4 and at least one of the first contact part 66Ap and the second contact part 66Bp becomes conductive with the partner connection body 4.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present disclosure relates to a connector structure. [Background technology]

[0002] As a conventional connector technology, there is a connector that connects a film wire to a board, which is configured without a flip, and when inserting the film wire into the housing of the connector, a small force is applied at first, and a large force is applied only at the end to insert and fix the film wire into the connector. This prevents the contact pins of the film wire from being scratched or broken, and at the same time, the film wire can be inserted into the correct position of the terminal, and the fixed state of the film wire can be stabilized (see, for example, Patent Document 1). Patent Document 1 discloses a film wire connector in which multiple terminals are inserted and fixed in a housing, and when a film wire is inserted into an insertion part of the housing, the contact pins of the film wire come into close contact with the contact parts of the terminals (see FIG. 12). The terminals of the connector have the contact parts formed on one side, and a seesaw member that seesaws around the center is formed integrally with the terminal at a position facing the contact parts, and the seesaw member seesaws with the film wire, stabilizing the fixed state of the film wire. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special table 2008-504645 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the connector of Patent Document 1, the seesaw member is formed so that the pressure applying portion faces the contact portion of the terminal. If the pressure applying portion and the terminal become misaligned due to some influence, such as an error in terminal installation, or if a force is generated that separates the contact pin of the film wire and the contact portion of the terminal due to prying or the like, stable conductivity may not be achieved.

[0005] In view of the above problems, the present disclosure has an object to provide a connector that can achieve a more stable connection. [Means for solving the problem]

[0006] In order to solve the above problems, the connector according to the present embodiment includes a housing having an insertion section having a predetermined width into which a mating connector having a plurality of mating terminals arranged thereon can be inserted, and a base section located a predetermined distance away in an insertion direction, which is a direction in which the mating connector is inserted from the insertion section, and a plurality of terminals, each having a fixed section having one end fixed to the base, an extension section having one end connected to the fixed section and the other end extending in a reverse insertion direction, which is the opposite direction to the insertion direction, and a connection section having one end connected to the extension section and the other end extending in the reverse insertion direction, which can be electrically connected to a mating terminal, and arranged in a width direction, which is the width direction of the housing. Each connection section of the plurality of terminals includes a connection base section extending from the other end of the extension section in a cross direction that crosses the insertion direction and the width direction, a first arm section extending from one end of the connection base on the cross direction side in the reverse insertion direction, and a second arm section extending from the other end of the connection base on the cross direction side in the reverse insertion direction. The first arm has a sub-arm consisting of a support portion extending from a predetermined position on the extension side of the first arm portion toward the second arm portion, a first sub-arm portion extending from the end of the extension side of the support portion in the reverse insertion direction, and a second sub-arm portion extending from the end in the insertion direction, a first contact portion protruding from the first sub-arm portion toward the second arm portion, and a second contact portion protruding from the second sub-arm portion toward the second arm portion, and the second arm has a pressing portion protruding toward a predetermined position between the first contact portion and the second contact portion, and each connection portion of the multiple terminals is configured such that when a mating connector is inserted between the respective first arm portion and second arm portion via the insertion portion, the pressing portion presses the mating connector, and at least one of the first contact portion and the second contact portion is conductive with the mating connector. Effect of the Invention

[0007] According to the connector of this embodiment, a stable connection can be achieved. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an oblique view showing a printed circuit board 1 and a mating connecting body 4 according to this embodiment, where A shows the state before the mating connecting body 4 is inserted into the connector 3, and B shows the state after insertion of the mating connecting body 4 into the connector 3 has been completed. [Diagram 2] FIG. 2 shows a flexible wiring board 9, where A is a plan view, B is a cross-sectional view taken along the line XX showing an enlarged view of the vicinity of electrode 9a, C is a front view of the end portion seen from the electrode 9a side, and D is an enlarged view of area Y. [Diagram 3] FIG. 3 is a plan view of FIG. 1A, and FIG. 3B is a ZZ cross-sectional view. [Figure 4] FIG. 4 is an exploded perspective view of the printed circuit board 1. As shown in FIG. [Diagram 5] FIG. 5 is a diagram for explaining the positional relationship between the terminal 6 and the guide 53, in which A is an enlarged view of an area V in FIG. 3B, and B is a schematic diagram seen from the insertion portion 51 side for explaining the arrangement in the width direction W. [Figure 6] FIG. 6 is a perspective view of the terminal 6. As shown in FIG. [Figure 7] FIG. 7 is a diagram defining formal areas to explain the configuration of terminal 6A, in which A shows the elements that make up the entire terminal 6A, B shows the elements that make up contact portion 61, C shows the elements that make up fixed portion 62, D shows the elements that make up extension portion 63, E shows the elements that make up connection portion 64, and F shows the elements that make up first arm portion 66. [Figure 8] FIG. 8 is a diagram for explaining the terminal 6A, where A is a perspective view and B is a plan view. [Figure 9] FIG. 9 is a diagram for explaining the terminal 6B, where A is a perspective view and B is a plan view. [Figure 10] FIG. 10 is a diagram showing the state in which the mating connector 4 is inserted in FIG. 5A. [Figure 11] FIG. 11 is a perspective view of a plurality of terminals 6 that are all configured to have the same shape. [Figure 12] FIG. 12 is a diagram for explaining a conventional connector. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In the following description, components having the same functions are denoted by the same reference numerals, and duplicated description will be omitted.

[0010] FIG. 1 is an oblique view showing a printed circuit board 1 and a mating connecting body 4 according to this embodiment, where A shows the state before the mating connecting body 4 is inserted into the connector 3, and B shows the state after insertion of the mating connecting body 4 into the connector 3 has been completed.

[0011] (Muting connector 4) As shown in FIG. 1, the mating connector 4 according to this embodiment is composed of a flexible wiring board 9 and a mating insertion portion 8. FIG. 2 shows the flexible wiring board 9, in which A is a plan view, B is a cross-sectional view taken along the line XX, and C is a front view of the end portion seen from the electrode 9a side, and D is an enlarged view of the region Y. The flexible wiring board 9 according to this embodiment is a thin-plate-shaped wiring board made of, for example, polyimide as a base material. The flexible wiring board 9 has flexibility to the extent that it can be bent 180 degrees from the center so that both ends in the length direction are aligned, or more. In this embodiment, the flexible wiring board 9 is composed of a first layer 91A and a second layer 91B as shown in FIG. 2B, and the first layer 91A and the second layer 91B are joined together by a predetermined adhesive to form an integrated body. However, the flexible wiring board 9 is not limited to this configuration. For example, it may be simply formed by stacking two layers instead of forming an integrated body. The first layer 91A has a plurality of wirings 9A arranged in the width direction of the flexible wiring board 9 (left and right direction in FIG. 2A), and one end of each wiring 9A is provided with an elongated electrode 9a for electrical connection with the connector 3. The wirings 9A are covered with an insulating layer 9C for insulation. The second layer 91B has a plurality of wirings 9B (FIG. 2B) arranged in the width direction of the flexible wiring board 9, similar to the first layer 91A, and one end of each wiring 9B is provided with an elongated electrode 9b for electrical connection with the connector 3. The wirings 9B are covered with an insulating layer 9D for insulation. The plurality of electrodes 9a and 9b are arranged shifted from positions facing each other in the width direction of the flexible wiring board 9. With this arrangement, the electrodes 9a and 9b, which are a plurality of terminals, are arranged in a staggered configuration across the surface on the first layer 91A side and the surface on the second layer 91B side, as shown in FIG. 2D. Since the electrodes 9a and 9b serve as terminals of the mating connection body 4, in this embodiment, they are also referred to as "mating terminals."

[0012] Flexible wiring board 9 has an electrode connectable to another device or equipment at the end opposite to electrodes 9a and 9b. These electrodes are not shown in Figures 1 to 3, and the length of flexible wiring board 9 is shown as being limited to a part.

[0013] As shown in FIG. 1A, the mating connector 4 is provided with a mating insertion section 8 at the end of the flexible wiring board 9 on the side of the electrodes 9a and 9b, which facilitates the insertion operation into the connector 3. The mating insertion section 8 mainly includes an insertion guide 8a, a claw section 8b, a lever 8c, and a secondary lock mechanism 8d. FIG. 3 is a plan view of FIG. 1A, and FIG. 3B is a ZZ cross-sectional view. The insertion guide 8a has a substantially box-like shape and has a hollow box shape into which the flexible wiring board 9 can be inserted. Specifically, as shown in FIGS. 3A and 3B, the insertion guide 8a has a substantially box-like shape having side walls 8a1 and 8a2 standing on both sides of the flexible wiring board 9, an upper cover 8a3 that covers the upper surface of the flexible wiring board 9, and a lower cover 8a4 that covers the lower surface of the flexible wiring board 9. The insertion guide 8a has an opening 8a5 on the side opposite the electrodes 9a and 9b, and an opening 8a6 on the side of the electrodes 9a and 9b. The side walls 8a1 and 8a2 extend longer toward the electrodes 9a and 9b than the upper cover 8a3 and the lower cover 8a4 so as to cover both ends of the flexible wiring board 9 in the width direction. As a result, the insertion guide 8a has a box-shaped hollow shape inside, and when the flexible wiring board 9 is placed inside the insertion guide 8a, the electrodes 9a and 9b can be exposed. The insertion guide 8a has a width length (length in the left-right direction in FIG. 3A) formed slightly shorter than the opening width of the insertion part 51 of the housing 5. The height of the side walls 8a1 and 8a2 is configured to be slightly shorter than the height of the insertion part 51 so that it can be inserted into the opening of the insertion part 51. The tip of the insertion side of the side walls 8a1 and 8a2 is tapered to facilitate insertion into the connector 3. As a result, the insertion guide 8a makes it easy to position the insertion part 51 in the width direction and the up-down direction (height direction), and makes it easy to insert the mating connector 4 into the connector 3.

[0014] As shown in FIG. 1, the mating insertion part 8 has two claws 8b on the upper cover 8a3 for fitting (primary locking) with the lock hole 5c1 provided in the housing 5 of the connector 3. The claws 8b fit into the lock hole 5c1 to prevent misalignment of the mating connector 3 and mating connector 4. The mating insertion part 8 has a secondary lock mechanism 8d on the upper cover 8a3 for more securely fitting the connector 3 and mating connector 4. Assuming that the printed circuit board 1 is in a stationary state, the mating connector 4 is moved in a direction approaching the connector 3 of the printed circuit board 1 (the same direction as the insertion direction P described later) and the mating insertion part 8 of the mating connector 4 is inserted into the insertion part 51 of the connector 3, as shown in FIG. 3B, to fit the connector 3 and the mating connector 4. The side walls 8a1 and 8a2 are provided with positioning parts 8e (FIG. 1A) near the ends opposite to the tapered ends. The positioning portion 8e restricts the insertion movement of the flexible wiring board 9 into the connector 3 so that it cannot move toward the base portion 52 (FIG. 3B) more than expected. This prevents, for example, damage to the terminal 6 in the connector 3 and the flexible wiring board 9. After the claw portion 8b and the lock hole 5c1 are engaged, the secondary locking mechanism 8d is pushed in the insertion direction P, so that a part of the convex portion (not shown) provided at both ends of the secondary locking mechanism 8d slips under the lever 8c. This makes it impossible for the lever 8c to be pushed downward (toward the lower cover 8a4), and therefore the primary lock cannot be released, completing the secondary lock (secondary lock). This movement allows the user to recognize that the connector 3 and the mating connecting body 4 are engaged securely, not only functionally but also visually and consciously. The upper cover 8a3 is provided with the lever 8c (FIG. 1) connected to the claw portion 8b. By moving the secondary locking mechanism 8d in the reverse insertion direction P' described later, the secondary locking is released and the lever 8c becomes operable downward (toward the lower cover 8a4). By pushing the lever 8c downward, the claw portion 8b also moves downward in conjunction, and the engagement (primary locking) between the claw portion 8b and the lock hole 5c1 is released.

[0015] (Printed Circuit Board 1) Fig. 4 is an exploded perspective view of the printed circuit board 1. As shown in Fig. 4, the printed circuit board 1 has as its main components a printed wiring board 2 and a connector 3 into which a mating connector 4 can be inserted.

[0016] (Printed Wiring Board 2) The printed wiring board 2 has a base material of, for example, glass epoxy resin, and a plurality of electrodes 21A, 21B are arranged on the upper surface 2a in the horizontal direction (the direction of width W3 in FIG. 3, hereinafter also referred to as the "width direction W") of the printed wiring board 2 so as to be electrically connected (hereinafter also referred to as "current flow") to the electrodes 9a, 9b of the mating connector 4. The plurality of electrodes 21A and 21B are arranged so as to be displaced (shifted) in the width direction W from positions facing each other. As a result, the plurality of electrodes 21A and 21B are arranged in a staggered pattern on the upper surface 2a of the printed wiring board 2. The printed wiring board 2 has two holes 22 into which the fixing device 7 can be inserted through the hole 54 of the connector 3.

[0017] (Connector 3) As shown in FIG. 4, the connector 3 includes a housing 5 and a plurality of terminals 6 as main components.

[0018] The housing 5 is a molded product made of a thermoplastic resin such as ABS as a base material, and in this embodiment, it is mounted on the upper surface 2a of the printed wiring board 2. The housing 5 in this embodiment has side walls 5a and 5b that are upright walls, and an upper surface 5c and a lower surface 5d that cover part of these walls, and forms a hollow box shape having an insertion part 51 on the front side in FIG. 4 and a base part 52 on the back side. The insertion part 51 is provided at one end of the housing 5 and has a rectangular opening having a width W3 (FIG. 3A) into which the mating connector 4 can be inserted. The base part 52 has a rectangular opening having the same width W3 as the opening of the insertion part 51 at a position spaced a length D3 from the opening of the insertion part 51 in the direction in which the mating connector 4 is inserted (hereinafter also referred to as the "insertion direction P"). The housing 5 has a plurality of terminals 6 inserted inside the hollow box shape, and the terminals 6 are press-fitted and fixed to the lower surface 5d of the housing 5. The terminals 6 will be described in detail later.

[0019] The housing 5 has two lock holes 5c1 in which the claws 8b of the mating insertion portion 8 are fitted, near the center of the upper surface 5c on the insertion portion 51 side. As shown in FIG. 3, the housing 5 has a plurality of guide portions 53 that are provided so as to extend (hereinafter, simply referred to as "extending") in a direction from the base portion 52 toward the insertion portion 51 (hereinafter, also referred to as "reverse insertion direction P'") inside the hollow housing 5. FIG. 5 is a diagram for explaining the positional relationship between the terminals 6 and the guides 53, in which A is an enlarged view of the area V in FIG. 3B, and B is a schematic diagram seen from the insertion portion 51 side for explaining the arrangement in the width direction W. In order to facilitate understanding of the structure, FIG. 5A shows one terminal 6 and one guide portion 53. FIG. 5B shows two terminals 6 (terminals 6A and 6B) and three guides 53 extending in the vertical direction. In Fig. 5B, the guide portion 53 is shown hatched in order to distinguish between the terminal 6 and the guide 53. As shown in Fig. 5, the guide 53 is a thin flat plate that stands upright in a horizontally elongated state. The guide portion 53 is provided with a cutout portion 53A into which the mating connector 4 can be inserted. The multiple guide portions 53 each have the same configuration, and as shown in Fig. 5B, the guide portions 53 and the terminals 6 are arranged alternately in the width direction W (left-right direction in Fig. 5B) within the housing 5.

[0020] (Terminal 6) As shown in Fig. 4, the multiple terminals 6 are arranged in the width direction W of the connector 3 and comprise multiple terminals 6A that are electrically connected to the electrodes 21A, and multiple terminals 6B that are arranged in the width direction W of the connector 3 and are electrically connected to the electrodes 21B. Fig. 6 is a perspective view of the terminals 6. In Fig. 6, only six of the multiple terminals 6 are shown, and the other terminals 6 are not shown. The connector 3 has the same number of terminals 6 as the total number of the electrodes 21A, 21B. The multiple terminals 6 are arranged such that the terminals 6A and the terminals 6B are alternately arranged in the width direction W of the housing 5.

[0021] (Terminal 6A) FIG. 7 is a diagram defining formal regions to explain the configuration of the terminal 6A, in which A shows elements constituting the entire terminal 6A, B shows elements constituting the contact portion 61, C shows elements constituting the fixed portion 62, D shows elements constituting the extension portion 63, E shows elements constituting the connection portion 64, and F shows elements constituting the first arm portion 66. FIG. 8 is a diagram for explaining the terminal 6A, in which A is a perspective view and B is a plan view. As shown in FIG. 7A, the terminal 6A is composed of the contact portion 61, the fixed portion 62, the extension portion 63, and the connection portion 64, which are connected to each other and have a thin plate shape formed as an integral unit by, for example, a punching process. The terminal 6A has a base material of a conductive material such as copper.

[0022] As shown in FIG. 7B, the contact portion 61 is composed of a joint portion 61a that electrically joins with the electrode 21A on the printed wiring board 2, a leg portion 61b that extends upward from one end of the joint portion 61a in the reverse insertion direction P' (to the right in FIG. 7B) to adjust the length of the contact portion 61, and a contact end portion 61c that extends from the leg portion 61b in the reverse insertion direction P' and has a predetermined height longer than the extension width of the leg portion 61b.

[0023] As shown in Fig. 7C, the fixed portion 62 is a thin flat plate connected to the contact portion 61, and fixes the terminal 6 to the housing 5. The fixed portion 62 is composed of a fixed base portion 62a and a fixed extension portion 62b. The fixed base portion 62a has a substantially rectangular flat plate shape, the insertion direction P side (left side in Fig. 7C) is connected to the contact end portion 61c, and has a fixed end 62a1 (see Fig. 8B) at its lower end which is press-fitted and fixed to the base portion 52 of the housing 5. The fixed extension portion 62b forms a substantially rectangular flat plate that extends from the upper surface 5c side of the fixed base portion 62a toward the upper surface 5c side with a width shorter than the width of the fixed base portion 62a.

[0024] As shown in FIG. 7D, the extension portion 63 is a thin flat plate connected to the fixed portion 62, and adjusts the pressure applied to the connection portion 64 caused by the insertion of the flexible wiring board 9. The extension portion 63 has an extension base 63a and extension ends 63b, 63c provided at both ends thereof. The extension end 63b of the extension portion 63 is connected to one end of the fixed extension portion 62b of the fixed portion 62 and extends in the reverse insertion direction P'. The extension base 63a extends from the other end of the extension end 63b in the direction of the lower surface 5d (downward in FIG. 7D) by a predetermined length. The extension end 63c extends from the end of the extension base 63a on the lower surface 5d side in the reverse insertion direction P' by a predetermined length. In this embodiment, the region of the extension portion 63 where the extension direction is changed by the extension base portion 63a and the extension end portion 63b is referred to as the "bent portion 63X". Also, the region of the portion where the extension direction is changed by the extension base portion 63a and the extension end portion 63c is referred to as the "bent portion 63Y". The extension portion 63 is connected to the connection portion 64. When the flexible wiring board 9 of the mating connection body 4 is inserted into the connection portion 64, the extension portion 63 is displaced as follows. In response to a force in the insertion direction P, the extension base portion 63a rotates with the bent portion 63X as a fulcrum (displaces in the clockwise direction in FIG. 8B), and in conjunction with this movement, the bent portion 63Y and the extension end portion 63c are displaced in the insertion direction P (the direction approaching the base portion 52), and the connection portion 64 is also displaced accordingly. With respect to a force in a direction (up and down direction in FIG. 8B, hereinafter also referred to as "crossing direction I") that intersects both the insertion direction P and the width direction W at substantially right angles, the extension end 63c rotates with the bent portion 63Y as a fulcrum. That is, when the force in the crossing direction I is on the upper side (top surface 5c side), the extension end 63c is displaced counterclockwise in FIG. 8B, and when the force in the crossing direction I is on the lower side (bottom surface 5d side), the extension end 63c is displaced clockwise. Accordingly, the connection portion 64 is also displaced. Therefore, the extension portion 63 adjusts the pressure applied to the connection portion 64 by the flexible wiring board 9 by the spring force of the bent portions 63X and 63Y. The bent portions 63X and 63Y can accommodate, for example, a misalignment due to the press-fitting attitude of the terminal 6 into the housing 5, or a misalignment of the contact position and angle due to a manufacturing error of the terminal, and can reduce the insertion force when the flexible wiring board 9 is inserted into the connection portion 64, which contributes to improving reliability by preventing damage.

[0025] The connecting portion 64 has a thin plate shape with one end connected to the extending end portion 63c of the extending portion 63 and the other end extending in the reverse insertion direction P'. The connecting portion 64 is configured to be electrically connected to the mating connecting body 4 by inserting the mating connecting body 4 into the connector 3, as described later.

[0026] (Connection 64) As shown in FIG. 7E, the connection portion 64 is made up of a connection base portion 65, a first arm portion 66, and a second arm portion 67.

[0027] The connection base 65 extends in the intersecting direction I from the extension end 63c of the extension portion 63 to form a substantially rectangular flat plate.

[0028] As shown in FIG. 7F, the first arm 66 is composed of a main arm 66a, a support portion 66b, and a sub-arm 66c. The main arm 66a extends linearly from the upper surface 5c side of the connecting base 65 in the cross direction I in the reverse insertion direction P' to form an elongated flat plate. The main arm 66a has a shape that tapers toward the extension direction. The support portion 66b extends from a predetermined position on the extension side of the main arm 66a (in FIG. 7F, it is the end of the main arm 66a, but is not limited to the end) to the second arm 67 side (lower surface 5d side) in the cross direction I by a short length compared to the extension length of the first arm 66, and serves as a fulcrum for the seesaw behavior of the sub-arm 66c. As shown in FIG. 7F, the sub-arm 66c is composed of a first sub-arm 66A extending from the end of the extending side of the support 66b in the reverse insertion direction P', and a second sub-arm 66B extending from the end of the extending side of the support 66b in the insertion direction P. The extension length LA (FIG. 8) of the first sub-arm 66A is shorter than the extension length LB of the second sub-arm 66B. As a result, the spring constant of the second sub-arm 66B is lower than that of the first sub-arm 66A, and when the flexible wiring board 9 is inserted, the second sub-arm 66B has a larger displacement than the first sub-arm 66A. This makes it possible to reduce the insertion force of the flexible wiring board 9 into the mating connector 4.

[0029] As shown in FIG. 8, the first sub-arm 66A has a first contact 66Ap that protrudes toward the second arm 67 side (the lower surface 5d side) in the cross direction I. The first contact 66Ap is configured to be electrically connectable to an electrode of the flexible wiring board 9 by inserting the mating connector 4 into the connector 3. The first sub-arm 66A has a first protrusion 66Ao that protrudes from the end on the insertion section 51 side toward the first arm 66 side (the upper surface 5c side) in the cross direction I. At least a part of the first protrusion 66Ao faces the adjacent guide 53, and overlaps with the adjacent guide 53 in the width direction W with a predetermined gap therebetween (FIG. 5). This restricts the movement of the first protrusion 66Ao in the width direction W. The tip position of the end of the protruding side of the first protruding portion 66Ao is located on the sub-arm portion 66c side (lower surface 5d side) by a length t1 from the position of the first arm portion 66 on the upper surface 5c side in the crossing direction I (FIG. 7E). The first arm portion 66 has a spring property, so that it moves in the crossing direction I when the flexible wiring board 9 is inserted. When a force in the upward direction (toward the upper surface 5c) is applied to the first arm portion 66, the first arm portion 66 moves in the upward direction (toward the upper surface 5c). Since the first arm portion 66 is located on the upper surface 5c side by a length t1 from the first protruding portion 66Ao, it functions as a clearance that enables the sub-arm portion 66c to perform a seesaw motion. The end of the extending side of the first sub-arm portion 66A has a slope portion 66As that slopes toward the first arm portion 66 side (upper surface 5c side) in the crossing direction I as it moves toward the reverse insertion direction P' from the first contact portion 66Ap.

[0030] As shown in FIG. 8, the second sub-arm 66B has a second contact 66Bp that protrudes toward the second arm 67 side (the lower surface 5d side) in the intersecting direction I. The second contact 66Bp is configured to be electrically connected to an electrode of the flexible wiring board 9 by inserting the mating connector 4 into the connector 3. The second sub-arm 66B has a second protrusion 66Bo that protrudes from the end of the extension side (the base 52 side) toward the first arm 66 (the upper surface 5c side). At least a part of the second protrusion 66Bo faces the adjacent guide portion 53, and overlaps with each other in the width direction W with a predetermined gap (FIG. 5). This restricts the movement of the second protrusion 66Bo in the width direction W. The second protrusion 66Bo and the first arm 66 are located a predetermined distance apart in a direction that intersects approximately at right angles. 8, the first arm 66 has a recess 66H at a position facing the second protrusion 66Bo to avoid contact with the second protrusion 66Bo. The end of the extension side (base 52 side) of the second sub-arm 66B has a slope 66Bs that slopes toward the first arm 66 side (top surface 5c side) in the intersecting direction I as it moves from the second contact point 66Bp toward the reverse insertion direction P'.

[0031] The second arm 67 extends from the lower side (lower surface 5d side) of the connecting base 65 in the cross direction I toward the reverse insertion direction P' to form a long and narrow flat plate. The second arm 67 has a tapered shape, and extends in the reverse insertion direction P' to a position halfway in the extending direction, and extends so that the tip is inclined toward the upper surface 5c as it extends in the reverse insertion direction P' from that position. This increases the spring constant of the second arm 67. The first arm 66 has a seesaw structure consisting of a linear main arm 66a, a support portion 66b, and a sub-arm 66c, and has a lower spring constant than the second arm 67. The connecting base 65 has an end portion on the extending end portion 63c side (left side in FIG. 8B) connected to the extending end portion 63c. The position of this connection is a predetermined position between the upper end (top surface 5c side) and the lower end (bottom surface 5d side) of the connection base 65 in the cross direction I. In Fig. 8, this position is provided in the center, but is not limited to this.

[0032] As shown in FIG. 8B, the second arm 67 has a pressing portion 67p on the extending side. The pressing portion 67p protrudes toward a predetermined position between the first contact portion 66Ap and the second contact portion 66Bp in the sub-arm 66c. In this embodiment, the pressing portion 67p is located opposite to any portion (G) of the second sub-arm 66B. The position of this G is preferably determined so that the moment acting on the first contact portion 66Ap and the second contact portion 66Bp is balanced, taking into consideration the seesaw structure of the sub-arm 66c, the lengths of LAp and LBp (FIG. 7F) described later, and the position of the pressing portion 67p. Due to this positional relationship, even if the flexible wiring board 9 is twisted and a force acts to separate the first contact portion 66Ap and the electrode of the flexible wiring board 9, a pressing force acts between the second contact portion 66Bp and the electrode of the flexible wiring board 9 (contact pressure is ensured), and good electrical contact is maintained between the terminal 6 and the flexible wiring board 9. As the position of G, for example, it is possible to set it at a position closer to the second contact portion 66Bp than the center position between the first contact portion 66Ap and the second contact portion 66Bp. The pressing portion 67p presses the flexible wiring board 9 of the inserted mating connector 4. The end of the second arm 67 on the side of the insertion section 51 has a sloped portion 67s that slopes from the pressing portion 67p toward the insertion section 51 (the reverse insertion direction P' side) in a direction away from the sub-arm 66c (toward the lower surface 5d), and at least a part of the end faces the adjacent guide portion 53 and overlaps with a predetermined gap in the width direction W (FIG. 5). This restricts the movement of the end of the second arm 67 on the side of the insertion section 51 in the width direction W. The pressing portion 67p and the first contact portion 66Ap are separated by a length t2 in the cross direction I, and the pressing portion 67p and the second contact portion 66Bp are separated by a length t3 in the cross direction I (FIG. 7E). In this embodiment, t2 and t3 are set to be slightly shorter than the thickness of the flexible wiring board 9 in order to enable insertion of the flexible wiring board 9 and to appropriately ensure the pressing force of the pressing portion 67p and the contact pressure of the first contact portion 66Ap and the second contact portion 66Bp with the flexible wiring board 9. However, t2 and t3 are not limited to this and may be set to other lengths as long as the contact pressure with the flexible wiring board 9 can be increased.In this case, for example, t2 and t3 may be configured to be 0 (zero) or a negative value.

[0033] (terminal 6B) 9A and 9B are diagrams for explaining terminal 6B, where A is a perspective view and B is a plan view. As shown in Fig. 9, terminal 6B is composed of a contact portion 61B, a fixed portion 62, an extension portion 63, and a connection portion 64B.

[0034] Contact portion 61B does not have portions corresponding to leg portion 61b and contact end portion 61c of contact portion 61 (FIG. 7B), but is configured in a shape similar to joint portion 61a, and is electrically joined to electrode 21B on printed wiring board 2.

[0035] The fixed portion 62 and the extending portion 63 of the terminal 6B have the same shapes as the fixed portion 62 and the extending portion 63 of the terminal 6A.

[0036] The connection portion 64B has the same configuration as the connection portion 64 of the terminal 6A. However, the connection portion 64B is configured to be connected to the extension portion 63 of the terminal 6B in a state where it has the same shape as the connection portion 64 of the terminal 6A and is inverted (rotated 180 degrees) about the axis of the insertion direction P. Due to this inversion, the terminal 6B has a pressing portion 67p on the upper surface 5c side and a first contact portion 66Ap and a second contact portion 66Bp on the lower surface 5d side.

[0037] The terminals 6 are inserted into the housing 5 and press-fitted and fixed, completing the assembly of the connector 3. In each terminal 6A of the connector 3, the first contact portions 66Ap are arranged in overlapping positions in the width direction W, the second contact portions 66Bp are arranged in overlapping positions in the width direction W, and the pressing portions 67p are arranged in overlapping positions in the width direction W. In each terminal 6B of the connector 3, the first contact portions 66Ap are arranged in overlapping positions in the width direction W, the second contact portions 66Bp are arranged in overlapping positions in the width direction W, and the pressing portions 67p are arranged in overlapping positions in the width direction W.

[0038] (Mounting of connector 3 to printed wiring board 2) The process of mounting the connector 3 on the printed wiring board 2 to obtain the printed circuit board 1 is performed, for example, in the following steps (see FIG. 4). Solder paste is applied to the electrodes 21A and 21B of the printed wiring board 2. The terminal 6A of the connector 3 is opposed to the electrode 21A of the flexible wiring board 9, and the terminal 6B of the connector 3 is opposed to the electrode 21B of the flexible wiring board 9, and the hole 54 of the housing 5 is aligned with the hole 22 of the printed wiring board 2. The fixing tool 7 is inserted from above (upper surface 5c) to fix the printed wiring board 2 and the connector 3. In this state, a heat treatment is performed using a reflow furnace or the like to complete the electrical connection between the terminal 6 and the printed wiring board 2, and the printed circuit board 1 is obtained.

[0039] (Insertion of the mating connector 4 into the connector 3) FIG. 10 is a diagram showing the case where the mating connector 4 is inserted in FIG. 5A. To facilitate understanding, FIG. 10 shows only an image of the flexible wiring board 9 in addition to FIG. 5A. An example will be described in which the printed circuit board 1 having the connector 3 is fixed (in a stationary state) and the mating connector 4 is inserted by moving it in the insertion direction P (as shown in FIG. 3B). As described above, the height of the side wall 8a1 of the mating insertion portion 8 is configured to be slightly shorter than the height of the insertion portion 51, and the tip of the flexible wiring board 9 is inserted so as to be guided to a position between the first contact portion 66Ap and the pressing portion 67p in the cross direction I. If any part of the tip of flexible wiring board 9 is inserted slightly above (toward upper surface 5c) or below (toward lower surface 5d) between first contact portion 66Ap and pressing portion 67p in cross direction I, flexible wiring board 9 will behave as follows because it has gradient portions (gradient portions 66As, 67s, and 66Bs). When the tip of flexible wiring board 9 comes into contact with gradient portion 66As, if the tip of flexible wiring board 9 comes into contact with terminal 6A, first arm portion 66 moves upward (toward upper surface 5c), and if the tip of flexible wiring board 9 comes into contact with terminal 6B, first arm portion 66 moves downward (toward lower surface 5d). At the same time, sub-arm portion 66c tilts so that second contact portion 66Bp moves away from first arm portion 66 (in other words, sub-arm portion 66c tilts so that first contact portion 66Ap moves closer to first arm portion 66). When the flexible wiring board 9 is further inserted in the insertion direction P and the tip of the flexible wiring board 9 comes into contact with the sloped portion 67s, the second arm 67 moves downward (toward the lower surface 5d) when the tip of the flexible wiring board 9 comes into contact with the terminal 6A, and moves upward (toward the upper surface 5c) when the tip of the flexible wiring board 9 comes into contact with the terminal 6B. When the flexible wiring board 9 is further inserted in the insertion direction P and the tip of the flexible wiring board 9 comes into contact with the sloped portion 66Bs, the sub-arm 66c tilts so that the second contact portion 66Bp approaches the first arm 66 (in other words, the sub-arm 66c tilts so that the first contact portion 66Ap moves away from the first arm 66). In other words, the structure is such that the buckling phenomenon of the terminal 6 is unlikely to occur when the flexible wiring board 9 is inserted into the terminal 6.

[0040] 10, the tip of the flexible wiring board 9 is stably inserted close to the connection base 65. The mating connecting part 4 is inserted into the connector 3 to a predetermined position by the locking mechanism between the locking hole 5c1 of the housing 5 and the claw 8b of the mating insertion part 8 and by the positioning part 8e restricting the movement in the insertion direction P. The secondary locking mechanism 8d is moved in the insertion direction P to activate the secondary locking, completing the insertion of the mating connecting part 4.

[0041] According to the connector 3 of this embodiment, when the mating connector 4 is inserted between the sub-arm 66c and the second arm 67, the mating connector 4 is pressed by the pressing portion 67p. As a result, the electrodes 9a and 9b come into contact with the opposing first contact portion 66Ap and second contact portion 66Bp, respectively, and a reaction force against the pressing force is generated. When focusing on one wiring and electrode, such as the wiring 9A and the electrode 9a, the flexible wiring board 9 has a configuration of a double-supported beam in which one surface is supported by the first contact portion 66Ap and the second contact portion 66Bp and the other surface is pressed by the pressing portion 67p. That is, since the pressing portion 67p is not provided at a position facing the first contact portion 66Ap or the second contact portion 66Bp, the pressing force by the pressing portion 67p is not concentrated on one of the contact portions. Therefore, it is possible to reduce the insertion force of the flexible wiring board 9. This reduces damage to the flexible wiring board 9, and improves the reliability of the connection between the first contact portion 66Ap and the electrode 9a, and the connection between the second contact portion 66Bp and the electrode 9b.

[0042] First arm 66 has a so-called seesaw structure by support portion 66b and sub-arm portion 66c, and has a spring constant lower than that of second arm 67. This is because, when flexible wiring board 9 is inserted, the displacement toward first arm 66 (sub-arm portion 66c) is greater than that toward second arm 67, and this seesaw structure can also reduce the insertion force in flexible wiring board 9, preventing damage to flexible wiring board 9.

[0043] The adoption of the seesaw structure enhances the reliability of the connection. That is, the moment generated by the pressing force applied to the first contact portion 66Ap and the length LAp (FIG. 7F) from the support portion 66b to the first contact portion 66Ap is balanced with the moment generated by the pressing force applied to the second contact portion 66Bp and the length LBp (FIG. 7F) from the support portion 66b to the second contact portion 66Bp. In this case, even if the electrical continuity between one of the first contact portion 66Ap and the second contact portion 66Bp is insufficient, electrical continuity is possible through the other contact portion, so that the reliability of the connection with the mating connector 4 is expected to be improved.

[0044] The structure of the second arm 67 ensures the appropriate pressing force by the pressing portion 67p, thereby ensuring the reliability of the connection to the first contact portion 66Ap and the second contact portion 66Bp. Therefore, there is no need to provide a separate part for ensuring the pressing force in order to ensure the connection to the electrodes 9a, 9b of the flexible wiring board 9.

[0045] Since the terminals 6A and 6B are arranged alternately, the direction in which the flexible wiring board 9 is pressed alternately from the upper side and the lower side when viewed from the width direction W, so that good contact is maintained even if a force such as a tilt is applied to the flexible wiring board 9.

[0046] The above describes the embodiment of the present disclosure. With the above configuration, when the mating connection body 4 is inserted between the first arm portion 66 and the second arm portion 67 of each of the connection portions 64 of the multiple terminals 6 via the insertion portion 51, the pressing portion 67p presses the mating connection body 4, and at least one of the first contact portion 66Ap and the second contact portion 66Bp is electrically connected to the mating connection body 4. This allows a stable connection to be achieved.

[0047] [Variations] Fig. 11 is a perspective view of a case where a plurality of terminals 6 are uniformly configured to have the same shape. The connector 3 of this embodiment may use a plurality of terminals 6' configured with only one terminal (terminal 6B in Fig. 11) as shown in Fig. 11, instead of the plurality of terminals 6 configured with terminals 6A and 6B shown in Fig. 6. In this case, the mating connection body 4 is prepared by mounting, for example, the wiring 9B and the electrode 9b among the wirings 9A and B and the electrodes 9a and 9b in Fig. 2. That is, the mating connection body 4 is prepared by mounting a flexible wiring board (flexible wiring board 9' not shown) with wiring and electrodes provided only on one side. Even in this case, the mating connecting body 4 has the first contact portion 66Ap and the second contact portion 66Bp as fulcrums, and when pressure is applied by the pressing portion 67p, a reaction force due to a sufficient pressing force that allows electrical continuity between at least the first contact portion 66Ap and the second contact portion 66Bp is generated in the mating connecting body 4 due to the balance effect of the moment similar to that of the above-mentioned double-supported beam, enabling electrical continuity with the mating connecting body 4. In this case, even if electrical continuity with one of the first contact portion 66Ap and the second contact portion 66Bp is insufficient, electrical continuity is possible through the other contact portion, and therefore the reliability of the connection with the mating connecting body 4 can be improved.

[0048] The embodiment and modified examples of the present disclosure have been described above. The number of terminals 6 in the present embodiment has been described by taking as an example a case where the number of terminals 6A and the number of terminals 6B are the same (23 each), but these are merely examples, and the total number of terminals 6 may be changed in consideration of the wiring of the flexible wiring board 9. The number of terminals 6A and the number of terminals 6B do not necessarily have to be the same, and may be appropriately adjusted depending on the layout of the flexible wiring board 9. The present embodiment has been described by taking as an example a case where the flexible wiring board 9 is wired approximately horizontally to the printed circuit board 1, but when the flexible wiring board 9 is wired approximately perpendicularly to the printed circuit board 1, the housing 5 may be mounted approximately perpendicularly to the printed circuit board 1. Needless to say, the printed circuit board and the mating connector described in the present embodiment can be appropriately changed without departing from the spirit of the present disclosure. [Explanation of symbols]

[0049] 1 Printed circuit board 2 Printed wiring board 2a Top surface 2b Bottom surface 21A,21B Electrode 22 Hole 3 Connector 4 Mating body 5 Housing 5a, 5b Side wall 5c Top 5c1 Lock hole 5d Bottom surface 51 Insertion part 52 Base 53 Guide 53A Notch 54 Hole 6,6A,6B Terminal 61,61B Contact part 62 Fixed part 62a Fixed base 62b Fixed extension part 62a1,62a2 End part 63 Extended portion 63a Extended base 63b,63c Extended end 63X,63Y Bent part 64,64B Connection part 65 Connection base 66 1st arm 66a Main arm 66A 1st secondary arm part 66Ap 1st contact part 66As Slope part 66Ao 1st protrusion part 66b Support part 66B 2nd secondary arm part 66Bp Second contact section 66Bs Gradient section 66Bo 2nd protrusion 66c Secondary arm 66H Recess 67 Second arm 67p Pressing section 67s Gradient section 7 Fixture 8 Mating insertion part 8a Insertion guide 8a1,8a2 Side wall 8a3 Top cover 8a4 Bottom cover 8a5,8a6 Opening 8b Claw 8c Lever 8d Secondary locking mechanism 8e Positioning portion 9,9' Flexible wiring board 9a,9b electrode 9A,9B wiring 91A 1st layer 91B 2nd layer 9C, 9D Insulating layer D3,LA,LAp,LB,LBp,t1,t2,t3,W3 Length I Cross direction P Insertion direction P' Reverse insertion direction W Width direction

Claims

1. a housing having an insertion portion having a predetermined width into which a mating connection body having a plurality of mating terminals arranged thereon can be inserted, and a base portion located a predetermined distance away in an insertion direction in which the mating connection body is inserted from the insertion portion; a plurality of terminals each having a fixed portion having one end fixed to the base, an extension portion having one end connected to the fixed portion and the other end extending in a reverse insertion direction that is the opposite direction to the insertion direction, and a connection portion having one end connected to the extension portion and the other end extending in the reverse insertion direction and capable of conducting with the mating terminal, the plurality of terminals being arranged in a width direction that is the width direction of the housing; A connector comprising: Each connection portion of the plurality of terminals is a connection base portion extending from the other end of the extension portion in a cross direction crossing the insertion direction and the width direction; a first arm portion extending in the reverse insertion direction from one end of the connection base portion in the intersecting direction; a second arm portion extending in the reverse insertion direction from the other end of the connection base portion in the intersecting direction, The first arm portion is A support portion extending from a predetermined position on the extension side of the first arm portion toward the second arm portion; a sub-arm portion including a first sub-arm portion extending in the reverse insertion direction from an end portion of the extension side of the support portion, and a second sub-arm portion extending in the insertion direction from the end portion; A first contact portion protruding from the first sub arm portion toward the second arm portion; A second contact portion protruding from the second sub-arm portion toward the second arm portion; having the second arm portion has a pressing portion that protrudes toward a predetermined position between the first contact portion and the second contact portion, Each connection portion of the plurality of terminals is configured such that, when the mating connection body is inserted between the first arm portion and the second arm portion via the insertion portion, the pressing portion presses the mating connection body, and at least one of the first contact portion and the second contact portion is electrically connected to the mating connection body. connector.

2. 2. The connector of claim 1, wherein the extension portion has at least one of a first bend portion that enables at least a portion of the extension portion to be displaced in a direction toward the fixed portion, and a second bend portion that enables at least a portion of the extension portion to be displaced in the vertical direction.

3. The connector according to claim 2 , wherein the extension portion is connected to the connection portion at a position between the one end and the other end of the connection portion.

4. The housing has a plurality of guide portions extending from the base portion in the reverse insertion direction, the plurality of guide portions are arranged such that the guide portions and the terminals alternate in the width direction; Each of the guide portions has a notch portion into which the mating connection body can be inserted when the mating connection body is inserted between the first arm portion and the second arm portion via the insertion portion. The connector of claim 1 .

5. 5. The connector as described in claim 4, wherein the end portion on the extended side of the second arm portion has a first gradient portion that moves away from the secondary arm portion as it moves toward the reverse insertion direction starting from the pressing portion, and at least a portion of the end portion overlaps with an adjacent guide portion in the width direction.

6. The connector according to claim 1 , wherein a length of the extension in the first sub-arm is shorter than a length of the extension in the second sub-arm.

7. The connector according to claim 1 , wherein at least a portion of the pressing portion faces any portion of the second sub arm portion.

8. The first sub arm further has a first protruding portion protruding from an end portion thereof toward the first arm portion, At least a portion of the first protrusion overlaps with the adjacent guide portion in the width direction, and an end portion of the protrusion side is located closer to the sub-arm portion than an end portion of the first arm portion opposite to the sub-arm portion. The connector according to claim 4.

9. The second sub arm further includes a second protruding portion protruding from the end portion on the extension side toward the first arm, At least a portion of the second protrusion overlaps with the adjacent guide portion in the width direction and is located a predetermined distance away from the first arm portion. The connector according to claim 4.

10. The first arm portion has a recessed portion at a position opposite to the second protruding portion. The connector of claim 9.

11. an end portion of the first sub-arm portion on an extension side has a second gradient portion that is inclined toward the first arm portion from the first contact portion toward the reverse insertion direction; an end portion of the second sub-arm portion on an extension side has a third gradient portion that is inclined toward the first arm portion from the second contact portion toward the reverse insertion direction; The connector of claim 1 .

12. a housing having an insertion section having a predetermined width into which a mating connector having a plurality of mating terminals arranged in a staggered pattern across one surface and the other surface can be inserted, and a base section located a predetermined distance away in an insertion direction in which the mating connector is inserted from the insertion section; a plurality of terminals each having a fixed portion having one end fixed to the base, an extension portion having one end connected to the fixed portion and the other end extending in a reverse insertion direction that is the opposite direction to the insertion direction, and a connection portion having one end connected to the extension portion and the other end extending in the reverse insertion direction and capable of conducting with the mating terminal, the plurality of terminals being arranged in a width direction that is the width direction of the housing; A connector comprising: the plurality of terminals are arranged such that a plurality of first terminals and a plurality of second terminals are alternately arranged in the width direction, Each connection portion of the plurality of first terminals is a connection base portion extending from the other end of the extension portion in a cross direction crossing the insertion direction and the width direction; a first arm portion extending in the reverse insertion direction from one end of the connection base portion in the intersecting direction; a second arm portion extending in the reverse insertion direction from the other end of the connection base portion in the intersecting direction, The first arm portion is A support portion extending from a predetermined position on the extension side of the first arm portion to the second arm portion in the intersecting direction; a sub-arm portion including a first sub-arm portion extending in the reverse insertion direction from an end portion of the extension side of the support portion, and a second sub-arm portion extending in the insertion direction from the end portion; A first contact portion protruding from the first sub arm portion toward the second arm portion; A second contact portion protruding from the second sub-arm portion toward the second arm portion; having the second arm portion has a pressing portion protruding toward a predetermined position between the first contact portion and the second contact portion, each of the connection portions of the second terminals is connected to the extension portion of the second terminal in a state in which the connection portion of the second terminal has the configuration of the connection portion of the first terminal and is inverted around the insertion direction as an axis; Each connection portion of the plurality of terminals is configured such that, when the mating connection body is inserted between the first arm portion and the second arm portion via the insertion portion, the pressing portion presses the mating connection body, and at least one of the first contact portion and the second contact portion is electrically connected to the mating connection body. connector.

13. The plurality of first terminals include The first contact portions are arranged at positions overlapping each other in the width direction, The second contact portions are arranged at positions overlapping each other in the width direction, The pressing portions are arranged at positions overlapping each other in the width direction, The plurality of second terminals include The first contact portions are arranged at positions overlapping each other in the width direction, The second contact portions are arranged at positions overlapping each other in the width direction, The pressing portions are arranged at positions overlapping each other in the width direction. The connector of claim 12.

Images