JP5227379B2 - Flat conductor electrical connector - Google Patents

Description

  The present invention relates to an electrical connector for a flat conductor.

  In the electrical connector for a flat conductor, in order to ensure the certainty and stability of the contact between the flat conductor inserted forward into the housing and the terminal, the contact portion for contacting the flat conductor with the terminal May be formed. For example, an electrical connector described in Patent Document 1 is known as an electrical connector having a terminal in which a plurality of contact portions are formed.

  In the electrical connector disclosed in Patent Document 1, the terminal is a flexible first extending from the lower portion of the base portion extending in the up-down direction (a direction perpendicular to the plane of the flat conductor) to the rear, which is the flat conductor extraction direction. One contact arm portion (elastic arm portion) and a flexible second contact arm portion (elastic arm) extending in parallel with the first contact arm portion from the base at a position lower than the first contact arm portion Part). The first contact arm portion is formed such that a front contact portion for contacting the flat conductor protrudes upward at the rear end. Further, the second contact arm portion has a rear side portion extending obliquely upward in the up-down direction, and the rear contact portion for contacting the flat conductor is rearward of the front contact portion and at the rear end. It is formed to protrude. Accordingly, the terminal has two contact portions that are shifted in the front-rear direction, that is, a front contact portion of the first contact arm portion and a rear contact portion of the second contact arm portion. For example, in the example of FIG. 7 of Patent Document 1, these two contact portions are positioned above the front contact portion, although slightly more than the rear contact portion.

  In the electrical connector of Patent Document 1, when the actuator as a movable member is in the open position, the flat conductor is inserted forward into the housing, and then the actuator is moved to the closed position, whereby the flat conductor is moved to the above position. Pressed downward toward the front contact portion and the rear contact portion, and the front contact portion and the rear contact portion are elastically displaced downward to contact the corresponding circuit portion formed on the lower surface of the front end portion of the flat conductor. Touch with. In Patent Document 1, when the actuator is in the open position, a gap larger than the thickness of the flat conductor is maintained between the actuator, the rear contact portion, and the front contact portion, and the flat conductor is easily inserted. The

Japanese Patent No. 4192203

  The flat conductor is inserted forward into the housing when the actuator is in the open position. The corresponding circuit portion formed on the lower surface of the front end portion of the flat conductor is inserted to a predetermined position above the front contact portion and the rear contact portion, and then the flat conductor is pressed downward by the actuator. While the flat conductor is inserted to the predetermined position, the corresponding circuit portion on the lower surface is connected to the flat conductor by its own weight or by applying a downward force to the flat conductor until the insertion. It can be made to slidably contact with the contact portion, particularly the rear contact portion. In this case, the flat conductor is once placed on the rear contact portion, and then inserted forward as it is and slidably contacted with the rear contact portion. The surface of the corresponding circuit portion of the flat conductor is cleaned by sliding contact with the rear contact portion, that is, so-called wiping, and the possibility of improving the contact with the subsequent terminal is expected. In order to effectively perform wiping with such a flat conductor, it is preferable that the second elastic arm portion on which the rear contact portion is formed has elasticity that easily causes elastic bending.

  However, in Patent Document 1, since the distance between the actuator in the open position, the rear contact portion, and the front contact portion is larger than the thickness of the flat conductor, the height direction of the inserted flat conductor is not determined, Even if it is said that the second elastic arm can bend easily just by placing it lightly on the rear contact part of the second elastic arm, sufficient sliding contact pressure cannot be obtained by the weight of the flat conductor alone. When the flat conductor is pressed downward at the time of insertion, it is difficult to adjust the sliding contact pressure to a desired value by hand, and the sliding contact pressure at any point in the insertion process also in the width direction of the flat conductor. It will fluctuate. Even if the skilled person can skillfully insert the flat conductor without any of these problems and good wiping is obtained, the flat conductor and the rear contact portion will be used in the state where the actuator is in the closed position later. The contact pressure between is not sufficient. That is, in Patent Document 1, the second elastic arm portion extends longer than the first elastic arm portion, and in this respect, it can be said that the second elastic arm portion is bent and easily comes into sliding contact. However, the function required of the elastic arm when using the connector is that when the flat conductor is pressed by the actuator in the closed position, the contact portion makes contact with the corresponding circuit portion of the flat conductor with sufficient contact pressure. However, if it is easy to bend as described above, there is a conflicting undesirable result that the contact pressure becomes insufficient. If the second elastic arm portion has a sufficient rigidity so as to obtain a high contact pressure although it extends for a long time, it is difficult to bend and the cleaning effect by wiping is reduced.

  In view of such circumstances, the present invention can perform sufficient wiping so as to bend easily when a flat conductor is inserted, and obtain sufficient contact pressure between the flat conductor and the contact portion of the terminal when the movable member is moved to the closed position. It is an object of the present invention to provide a flat conductor electrical connector having a plurality of contact portions.

  An electrical connector for a flat conductor according to the present invention is made by maintaining a flat plate surface of a metal plate, a housing in which a receiving portion for receiving a flat conductor, a terminal groove for holding a terminal is formed, and a flat plate surface of the metal plate. Solder connection to the circuit board outside the housing and the contact part for contact with the flat conductor that is held in the terminal groove of the housing with the direction perpendicular to the arrangement direction and inserted forward into the receiving part of the housing A plurality of terminals having a connection portion to be connected, an open position where the receiving portion is opened to allow insertion of a flat conductor, and a closed position where the flat conductor after insertion is pressed against the contact portion of the terminal. And a movable member movable between the positions.

  In such an electrical connector for a flat conductor, according to the present invention, the terminal has a plurality of flexible elastic arm portions extending in the front-rear direction and formed with contact portions, and on the opposite side of the elastic arm portion with respect to the flat conductor. A support arm portion positioned, and the elastic arm portion is elastically displaceable in a direction perpendicular to the surface of the flat conductor when the contact portion is pressed by the flat conductor, and the support arm portion The support arm is formed with a support portion for supporting the movable member in a movable manner between the open position and the closed position, and the housing or the movable member in the open position has a regulating surface in contact with the upper surface of the flat conductor. A distance between the regulating surface in the thickness direction of the flat conductor and the rear contact portion is formed to be narrower than the thickness of the flat conductor, and the plurality of elastic arm portions in each terminal are the contact portions thereof. Are located differently in the front-rear direction, and at least the contact part located at the rearmost When the flat conductor presses the contact portion with a movable member that is in contact with the surface of the flat conductor being inserted and is in sliding contact with the surface, While the elastic arm portion having the contact portion located at the position is in the process of elastic displacement, the contact portion formed on the elastic arm portion comes into contact with the housing, and the contact portion of the elastic arm portion is less likely to be elastically displaced. It is characterized by.

  According to the present invention having such a configuration, the distance in the thickness direction of the flat conductor between the regulating surface of the movable member in the housing or the open position and the rearmost contact portion is smaller than the thickness of the flat conductor. When the flat conductor is inserted, the flat conductor is uniformly pressed to the contact portion at each terminal by the force received from the regulation surface, and the flat conductor has a good cleaning effect by reliable and uniform wiping. obtain. In the present invention, when the flat conductor is inserted, the elastic arm portion having the contact portion located at the rearmost portion is made sufficiently long so that the elastic arm portion can be easily bent and wiping can be performed sufficiently. After the flat conductor is inserted, when the movable member moves to the closed position, the contact portion provided on the elastic arm portion contacts the housing during the movement of the movable member, and the elastic arm portion reaches the contact portion. As a result, the length of the elastic arm becomes short, and it becomes difficult to bend. Accordingly, when the connector is used, the contact pressure at the contact portion increases, and good contact with the flat conductor is secured and maintained.

  In the present invention, it is preferable that the contact portion located at the rear end is set to have a larger amount of interference with the flat conductor than the other contact portions. When the flat conductor is inserted, it is the last contact portion that first comes into contact with the corresponding circuit portion of the flat conductor and makes the longest contact. Therefore, the contact portion at the rear end has an effective amount of wiping by having an interference amount larger than that of the other contact portions, while the amount of interference is not so large at the contact portion in front of the contact portion. The insertion resistance of the flat conductor is small as a whole, and it is not necessary to increase the insertion force of the flat conductor.

  In the present invention, the plurality of elastic arm portions have two elastic arm portions, a front elastic arm portion formed with a front contact portion and a rear elastic arm portion formed with a rear contact portion, and a rear elastic arm portion in a free state. The arm length can be longer than the front elastic arm portion. When the terminal has two elastic arm portions, if the length of the free state of the rear elastic arm portion is made longer than that of the front elastic arm portion, wiping is reliably performed at the rear contact portion formed on the rear elastic arm portion. The front elastic arm portion and the rear elastic arm portion can be formed so as to extend rearward with the front position of the terminal as a base. In this case, the rear elastic arm portion may be bent at the rear position of the terminal so that the tip having the contact portion faces forward. By doing so, the elastic rear arm portion can further increase the elastic arm length by the distance from the bent portion to the tip.

  In the present invention, the contact portion provided on the elastic arm portion having the contact portion located at the rearmost side may be provided on the rear side of the contact portion in the longitudinal direction of the elastic arm portion or on the tip side. You can also. In the former case, the elastic arm portion shortens the cantilevered elastic arm length to the contact portion by the contact between the contact portion and the housing, and in the latter case, the elastic arm portion becomes a double-supported beam shape. In either case, it becomes difficult to bend. That is, the contact portion is not easily elastically displaced.

  In the present invention, as described above, the distance in the thickness direction of the flat conductor between the contact portion of the terminal located at the rearmost in the insertion direction of the flat conductor and the regulating surface formed on the movable member in the housing or the open position is set. The thickness of the flat conductor is smaller than the thickness of the flat conductor, and the movable member after insertion of the flat conductor moves to the closed position. In the process, the contact portion is brought into contact with the housing, so that when the flat conductor is inserted, the elastic contact portion on the rearmost side that is sufficiently bent by the force that the flat conductor receives from the regulating surface is inserted. At each point of the insertion process in the width direction, the contact part is reliably and stably pressed against each contact part, cleaned by good wiping, and after being inserted to a predetermined position, the movable member is closed. Flat type by moving to position When the elastic arm portion is bent by the body and the bending proceeds, the contact portion of the elastic arm portion comes into contact with the housing, and the free length of the elastic arm portion, that is, the elastic arm length contributing to the bending is As a result, the elastic arm portion becomes difficult to bend, and as a result, when using the connector in which the movable member is in the closed position, the contact pressure with the flat conductor is increased and the state is maintained.

It is a perspective view showing the whole electric connector for flat type conductors concerning an embodiment of the present invention, and is shown in the state where a movable member exists in an open position. FIGS. 2A and 2B are cross-sectional views at a terminal position in FIG. 1, (A) before flat conductor insertion, (B) when flat conductor insertion is completed, and (C) after flat conductor insertion, the movable member is in the closed position. Indicates the state. It is a longitudinal cross-sectional view of the electrical connector for flat conductors which concerns on the modification of embodiment of FIG. It is a longitudinal cross-sectional view of the electrical connector for flat conductors which concerns on the other modification of embodiment of FIG. It is a longitudinal cross-sectional view of the electrical connector for flat conductors which concerns on the further modification of embodiment of FIG. 1, (A) is before a flat conductor insertion, (B) is a movable member closed position after insertion of a flat conductor. Shows the state.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

<First embodiment>
FIG. 1 is a perspective view showing the entire flat conductor electrical connector according to this embodiment in a state where the movable member is in the open position. 2 is a vertical cross-section at the terminal position in the terminal arrangement direction of the connector of FIG. 1, (A) is a state where the movable member is in the open position before the flat conductor is inserted, and (B) is a flat type. After the conductor is inserted, the movable member is in the open position, and (C) shows the state in which the movable member is in the closed position after the flat conductor is inserted.

  An electrical connector 1 for flat conductors (hereinafter simply referred to as “connector 1”) according to the present embodiment is disposed on a circuit board (not shown), and a connecting portion of a flat conductor such as an FPC is forward. The connector is inserted in a direction parallel to the surface of the circuit board (to the right in FIG. 2) to electrically connect the flat conductor and the circuit board. In FIG. 1, an intermediate portion in the longitudinal direction, which is the terminal arrangement direction of the connector 1, is indicated by a two-dot chain line and is not shown.

  The connector 1 has a substantially rectangular parallelepiped outer shape and is made of an electrical insulating material, for example, a synthetic resin housing 10, a plurality of metal terminals 20 arranged and held in the housing 10 at equal intervals, and the housing 10 and the plurality of terminals. 20, a movable member 30 made of an electrical insulating material, for example, made of synthetic resin, rotatably supported by 20, and a metal fixing bracket 40 held by the housing 10 at both ends in the terminal arrangement direction of the housing 10. ing.

  2B and 2C are inserted in the connector 1 in the terminal arrangement direction (direction perpendicular to the paper surface in FIGS. 2B and 2C). Corresponding circuit portions connected to the terminals 20 are formed on the lower surface at positions corresponding to the plurality of terminals 20, respectively.

  As shown in FIGS. 1 and 2, the housing 10 includes a bottom wall 11, a front wall 12 extending upward at a front position of the bottom wall 11 in the flat conductor insertion direction, and a terminal arrangement direction (flat conductor). Side walls 13 (not shown in FIG. 2) extending upward from the bottom wall 11 at both end positions of the housing 10 in a direction corresponding to the width direction of the housing 10. A terminal groove 14 for holding the terminal 20 is formed in the housing 10 so as to extend back and forth at equal intervals in the terminal arrangement direction of the housing 10. The housing 10 forms an open space in which the rear part is opened upward and cut out in the terminal arrangement range.

  As shown in FIG. 2, the terminal groove 14 is formed in a slit shape extending in a direction parallel to the paper surface and penetrates in the front-rear direction.

  As can be seen in FIG. 1, the fixture 40 has a shaft support portion that rotatably supports an end shaft portion of a movable member 30 described later. Further, the side wall 13 is formed with slit-shaped fixing metal holding grooves 13 </ b> A for holding the fixing metal 40 opening upward, downward, and rearward at positions on the rear side of the side wall 13.

  As shown in FIG. 2, the upper half of the rear half of the housing 10 is formed with an open space that communicates over the terminal arrangement range and opens upward, as described above, and the lower half of the open space. The portion forms a receiving space 15 as a receiving portion for receiving the flat conductor F from the rear. The upper half of the open space forms a movable member moving space 16 that allows the movable member 30 to move between the open position and the closed position.

  As shown in FIG. 2, the terminal 20 is made by, for example, punching while maintaining a flat surface of the metal plate, and the terminal groove 14 of the housing 10 has a direction perpendicular to the plate surface as a terminal arrangement direction. Array is retained. The terminal 20 is attached to the terminal groove 14 of the housing 10 in the direction (extraction direction) opposite to the insertion direction of the flat conductor, that is, leftward in FIG.

  As shown in FIG. 2, the terminal 20 extends rearwardly along the upper portion of the terminal groove 14 at the upper part in the terminal groove 14 and extends in an arm shape toward the movable member moving space 16. An arm portion 21, an extension arm portion 22 that extends to the middle in the front-rear direction while contacting the bottom wall 11 of the housing along the lower portion of the terminal groove 14 at the lower portion of the terminal groove 14, The connecting portion 23 extending outward from the housing 10 downward is connected to the front end of the support arm portion 21, the front end of the extended arm portion 22, and the rear end of the connecting portion 23. And a connecting portion 24. The support arm portion 21, the extended arm portion 22, and the connection portion 23 connected by the connecting portion 24 are integrated with high rigidity.

  From the rear edge of the connecting portion 24, the flexible front elastic arm portion 25 is directed rearward at a position above the extended arm portion 22 in substantially the same range as the extended arm portion 22 extending to the intermediate position in the front-rear direction. It extends. A flexible rear elastic arm portion 26 extends rearward from the rear end portion of the extended arm portion 22, and the rear elastic arm portion 26 forms a gap between the bottom wall 11 and the bottom wall 11. 11 and a lower portion 26-1 extending along the lower end portion 26-1, and an upper portion 26-2 that is bent at the rear end position of the lower portion 26-1 and changes its direction to extend forward. In this embodiment, as seen in FIG. 2, the upper portion 26-2 of the rear elastic arm portion 26 facing forward after being bent at the rear end extends to the vicinity of the rear end portion of the front elastic arm portion 25. Yes. The lower portion 26-1 of the rear elastic arm portion 26 is made to have a size that is narrower in the vertical width than the extension arm portion 22, and maintains a gap with the bottom wall 11 in a free state (FIG. 2 ( (See A) and (B)).

  As described above, the front elastic arm portion 25 extends to substantially the same position as the extended arm portion 22 in the front-rear direction, and the front contact portion 25A for contacting the corresponding circuit portion on the lower surface of the flat conductor F after insertion. Is formed so as to protrude upward at the rear end portion of the front elastic arm portion 25. Further, the rear elastic arm portion 26 has a flat shape after insertion at the front end of the upper portion 26-2 extending to the front contact portion 25A of the front elastic arm portion 25 toward the front through a bent portion at the rear end position. A rear contact portion 26A for contacting the corresponding circuit portion on the lower surface of the conductor F is formed to protrude upward. The bent portion, that is, the rear end of the lower portion 26-1, forms a contact portion 27 where the rear elastic arm portion 26 contacts the bottom wall 11 of the housing in the course of elastic displacement. As shown in FIG. 2, the rear contact portion 26A is located above the front contact portion 25A when the rear elastic arm portion 26 is in a free state before the flat conductor F is inserted. . Further, as seen in FIG. 2A, the rear contact portion 26A flattens the gap between the lower end of the movable member 30 in the open position when the rear elastic arm portion 26 is in a free state. It is positioned so as to be smaller than the thickness of the mold conductor F. Therefore, when the flat conductor F is inserted into the gap, the lower end surface of the movable member 30 in the open position functions as a regulating surface 30A with respect to the flat conductor F, and the flat conductor F is in contact with the rear contact. The portion 26A is pressed downward to be elastically displaced and moves forward, and then the front contact portion 25A is pressed downward to be elastically displaced. In a free state before insertion of the flat conductor F, the rear contact portion 26A is positioned above the front contact portion 25A. Therefore, after the flat conductor F is inserted, the amount of elastic displacement of the rear contact portion 26A. Is larger than the elastic displacement amount of the front contact portion 25A. At this time, the front contact portion 25A does not need to be elastically displaced and does not have to contact the flat conductor F.

  The support arm portion 21 of the terminal 20 is formed with a concave rotation support portion 21 </ b> A opening downward at the lower edge of the rear end portion located in the movable member moving space 16. As will be described later, the rotation support portion 21A accommodates a shaft portion 32 serving as a rotation center of the movable member 30, and when the movable member 30 rotates between an open position and a closed position, The shaft portion 32 is rotatably supported.

  The connecting portion 23 of the terminal 20 has a lower edge located slightly below the lower surface of the bottom wall 11 of the housing 10, and when the connector 1 is disposed on a circuit board (not shown), The corresponding circuit portion of the circuit board is securely contacted and can be soldered to the corresponding circuit portion. The connecting portion 24 is press-fitted into the terminal groove 14 at the upper and lower edge portions.

  The movable member 30 functions as a restricting means for restricting the upper surface of the flat conductor F inserted when the movable member 30 is in the open position downward toward the front contact portion 25A and the rear contact portion 26A of the terminal 20. . The movable member 30 has an open position in which the flat conductor F can be inserted in a vertical position extending in the vertical direction as shown in FIG. 2B, and a front-back direction as shown in FIG. It can be rotated between a closed position in which the contact pressure of the flat conductor F with respect to the front contact portion 25A and the rear contact portion 26A of the terminal 20 is increased.

  As is often seen in FIG. 1, the movable member 30 is formed with a width exceeding the arrangement range of the terminals 20 in the terminal arrangement direction. As shown in FIGS. 1, 2A and 2B, the movable member 30 has a groove slightly wider than the plate thickness of the terminal 20 at a position corresponding to the terminal 20 in the terminal arrangement direction. A groove portion 31 having a slit shape is formed in a substantially lower half portion of the movable member 30 at the open position. Accordingly, as is often seen in FIG. 1, the substantially lower half of the movable member 30 has a comb-like shape penetrating in the terminal arrangement range when viewed in the front-rear direction. The groove portion 31 allows the rotation support portion 21A of the terminal 20 to enter from the front.

  As shown in FIGS. 2A and 2B, the groove portion 31 is provided with a shaft portion 32 in an island shape near the lower end portion of the movable member 30. The opposed inner wall surfaces of the groove portion 31 are connected to each other. The shaft portion 32 has a circular cross section in the present embodiment.

  The movable member 30 has end shaft portions formed coaxially with the shaft portion 32 at both side ends in the terminal arrangement direction, and the end shaft portions are supported by the support portions of the fixing bracket 40 described above. It is supported rotatably.

  2A and 2B, the front surface (right surface) (lower end) of the movable member 30 in the vertical position at the open position is in the horizontal position when the movable member 30 is in the closed position. It is formed as a pressing surface 34 that presses the flat conductor F downward (see also FIG. 2C).

  The fixture 40 is made by punching a metal plate. As shown in FIG. 1, the fixture 40 is inserted into the slit-like fixture holding groove 13A of the housing 10 in a posture in which the plate surface is perpendicular to the terminal arrangement direction. It is attached from the rear. The connector 1 is fixed on the circuit board by soldering the lower edge of the fixing bracket 40 to the circuit board.

  Hereinafter, the connection operation between the connector 1 and the flat conductor F will be described with reference to FIG.

  First, as shown in FIG. 2A, the movable member 30 is brought to the open position in the vertical position. Next, the flat conductor F is inserted into the receiving space 15 of the housing 10 from the rear (left side) to the front (right side). As shown in FIG. 2B, the flat conductor F is inserted to a predetermined position where the front end surface of the flat conductor F abuts the rear surface of the front wall 12. In the present embodiment, the space between the regulation surface 30A formed at the lower end of the movable member 30 in the open state and the rear contact portion 26A before contact with the flat conductor F located at the rear is flat in the vertical direction. The gap is smaller than the thickness of the mold conductor F. Therefore, when the flat conductor F is introduced into the receiving space 15 when the movable member 30 is in the open position, the flat conductor F has the restriction surface 30 </ b> A whose upper surface is formed by the lower end of the movable member 30. It is regulated and receives a downward force from the regulation surface 30A, and the upper surface presses the rear contact portion 26A downward and elastically displaces it. The amount of elastic displacement of the rear contact portion 26A is equal to the amount of interference between the rear contact portion 26A in a free state and the thickness of the flat conductor F before the flat conductor F is inserted. The flat conductor F is inserted further forward while securing the elastic displacement with respect to the rear contact portion 26A. In the present embodiment, the rear elastic arm portion 26 is bent at the rear end with the lower portion 26-1 extending rearward from the middle position of the housing in the front-rear direction while forming a gap with the bottom wall 11 of the housing. Since the upper portion 26-2 extending forward is continuously formed in the shape of a horizontal U, the elastic arm length is sufficiently long, and the elastic displacement amount can be sufficiently secured easily. . The pad-shaped connecting portion formed on the lower surface of the front end portion of the flat conductor F further advances in contact with the rear contact portion 26A that is sufficiently elastically displaced, thereby cleaning with a so-called wiping effect. Is done.

  However, the front contact portion 25A has a smaller amount of interference with the flat conductor F than the rear contact portion 26A, and the flat conductor F (the tip) has a predetermined amount after elastic contact with the front contact portion 25A. The forward distance is not much left to the position, and the sliding contact distance with the front contact portion 25A is small. In the front contact portion 25A, rather than the wiping effect, it is meaningful to support the flat conductor F in a reliable contact after the movable member 30 reaches the closed position. Since the wiping effect is sufficiently obtained by the rear contact portion 26A having a large sliding contact distance to a predetermined position, there is no need for elastic contact pressure with the front contact portion 25A at this time.

  Thus, after the flat conductor F has advanced to a predetermined position and has been inserted into the receiving space 15, the movable member 30 is rotated to the closed position as seen in FIG. As the movable member 30 rotates toward the closed position, the rear elastic arm portion 26 is elastically deformed downward, and the rear end thereof, that is, the lower portion and the upper portion of the rear elastic arm portion 26, The lower end 26-1 is in contact with the bottom wall 11 of the housing 10, and the lower portion 26-1 can no longer contribute to the elastic deflection. The arm portion 26 ensures elastic bending only by the upper portion 26-2. Therefore, the rear elastic arm portion 26 increases its rigidity in the process of elastic bending and becomes difficult to bend. Thereafter, the rear contact portion 26A is in contact with the flat conductor F under a relatively small amount of elastic displacement. Bring great contact pressure.

  Thus, the rear elastic arm portion 26 of the present embodiment ensures a large amount of elastic displacement for wiping by sufficient elastic bending at the beginning of insertion of the flat conductor F, and later increases the rigidity so that the connector can be used. A sufficiently large contact pressure is ensured with the required flat conductor F.

  In the present embodiment, when the flat member F is inserted into the receiving space 15 when the movable member 30 is in the open position, the lower end surface of the movable member 30 acts as a restriction surface on the flat conductor F. In the present invention, the restricting surface can be obtained without using a movable member. However, the flat conductor F is sufficiently elastically displaced downward without causing the flat conductor F to escape upward. For example, at a position corresponding to both side edges of the flat conductor F inside the side wall 13, as shown by a two-dot chain line in FIG. If the protrusion 13B is formed, the lower surface of the protrusion acts as a restricting surface, and the flat conductor F moves upward on the restricting surface even if it is lifted by the rear contact portion 26A. Thus, the reaction force from the regulation surface effectively presses the rear contact portion 26A downward. Of course, in order to form the restricting surface, a plurality of protrusions provided in the front-rear direction and a groove portion that guides the side edge of the flat conductor F may be used instead of the above-described protrusions.

  In the embodiment shown in FIGS. 1 and 2, the flat conductor is inserted into the connector on the circuit board from a direction parallel to the surface of the circuit board. However, the present invention is limited to this embodiment. In addition, the present invention can be applied to a connector in which a flat conductor is inserted from a direction perpendicular to the surface of the circuit board as shown in FIG. In FIG. 3, since the flat conductor F is inserted from the upper side to the lower side, the lower side is the front side in this embodiment.

  In FIG. 3, the horizontal connector of FIGS. 1 and 2 is arranged to be rotated 90 ° so as to be a vertical type, but with a form in which a part of each of the terminal and the movable member is slightly changed. It has become. The terminal 20 has connection portions 23A and 23B extending at both ends of the housing 10 at the lower end, and the movable member 30 has a short operation portion located outside the housing. Therefore, the connector of FIG. 3 is a vertical type connector, the connecting portions 23A and 23B extend from the lower end of the housing to both sides, and the operating portion of the movable member 30 as compared with the connector of FIG. 1 is slightly different from the connector of FIG. 1 only in that the contact portion of the terminal and the restricting portion that comes into contact with the flat conductor are the same.

  In the form of FIG. 3, the open position is when the movable member takes a vertical posture upward, and in this state, the flat conductor F is inserted from above to below, that is, forward. At the beginning of insertion, the flat conductor F is regulated by the regulating surface 30A of the movable member 30 and moves forward while pressing the rear contact portion 26A to the left, and the front end surface of the flat conductor F abuts the rear surface of the front wall 12. Brought into place. In the meantime, the operation of the flat contact F with respect to the rear contact portion 26A and the front contact portion 25A is exactly the same as in the case of FIGS.

  When the flat conductor F is brought to the predetermined position, the movable member 30 is rotated to the closed position in the horizontal position as seen in FIG.

  Next, the embodiment of FIG. 4 is different from the embodiment of FIGS. 1 and 2 in that the movable member 30 is rotated in the opposite direction, but otherwise the embodiment of FIG. 1 and FIG. The form is exactly the same. In the case of FIG. 3, the operation part of the movable member is slightly shorter, but is substantially the same as that of FIGS. 1 and 2.

  In the connector of FIG. 4, the flat conductor F is inserted forward to a predetermined position when the movable member 30 is in the open position in the vertical position, as in FIGS. 1 and 2. Thereafter, the movable member 30 is rotated counterclockwise to bring it to the closed position in the horizontal position as shown in FIG. The operation between the flat conductor F and the terminal 20 is exactly the same as in FIGS.

  The embodiment of FIG. 5 has an upper elastic arm portion 25 and a lower elastic arm portion 26 corresponding to the front elastic arm portion 25 and the rear elastic arm portion 26 in FIG. Only the form is different from the form of FIG.

  In FIG. 5, the terminal 20 has two elastic arm portions, an upper elastic arm portion 25 and a lower elastic arm portion 26, and both elastic arm portions extend substantially in parallel toward the rear from the connecting portion 24 in the up and down position. Yes. The upper elastic arm portion 25 extends straight rearward at a position above the lower elastic arm portion 26, and has a front contact portion 25A at the rear end thereof. The lower elastic arm portion 26 located below the upper elastic arm portion 25 extends rearward at a position away from the bottom wall 11 of the housing 10, and is located above a position corresponding to the rear end of the upper elastic arm portion 25. And it inclines toward the back and is bent and it has 26 A of back contact parts in the rear-end part. The rear elastic arm portion 26 has a projecting contact portion 27 at the lower edge at the middle portion in the front-rear direction. When the rear contact portion 26A is pressed downward by the flat conductor F and elastically displaced downward, the abutment portion 27 has its projection amount set so as to abut against the bottom wall 11 of the housing 10 in the displacement process. Yes. In this embodiment, both elastic arm portions 25 and 26 are different in shape from those of FIG. 1 and FIG. 2 or FIG. 4, but the positions of the front contact portion 25A and the rear contact portion 26A (front and rear direction and up and down direction). The direction position is the same as that in FIG. 1 and FIG. 2 or FIG.

  In this embodiment, as shown in FIG. 5A, the flat conductor F is inserted when the movable member 30 is in the open position in the vertical position. Since the positions of the rear contact portion 26A and the front contact portion 25A are the same as in the case of FIG. 1 and FIG. 2 or FIG. Until then, the flat conductor F, the rear contact portion 26A, and the front contact portion 25A operate in exactly the same manner as in FIGS.

  When the flat conductor F moves forward to a predetermined position, the movable member 30 is rotated toward the closed position in the horizontal position as shown in FIG. During the rotation process, the protruding contact portion 27 of the lower elastic arm portion 26 contacts the bottom wall 11 of the housing 10. Therefore, after that, the elastic arm length of the lower elastic arm portion 26 is shortened, and elastic bending occurs only in a portion behind the corresponding contact portion 27. Thus, the rear elastic arm portion 26 is easily bent at the time of contact with the flat conductor F, and the movable member 30 is brought into the closed position after obtaining a sufficient wiping effect by increasing the amount of elastic displacement when the flat conductor advances. Sometimes, a short elastic arm length makes it difficult to bend, and a large contact pressure can be secured even with a small amount of elastic displacement.

  In the present embodiment shown in FIG. 5, further modifications are possible. In FIG. 5, the rear elastic arm portion 26 is provided with a contact portion 27 at an intermediate portion thereof, and in the elastic displacement process of the rear elastic arm portion 26, the protrusion 27 contacts the bottom wall 11 of the housing 10. After the time point, the rear elastic arm portion 26 is made difficult to bend and a high contact pressure is obtained with a small displacement amount at the rear contact portion 26A, but in place of the protruding contact portion 27, FIG. As shown by a two-dot chain line, a similar effect can be obtained by providing an extension protrusion extending downward at the rear end of the rear elastic arm portion 26 as a contact portion 27 ′. be able to. That is, the rear elastic arm portion 26 is a single-beam spring when the flat conductor F is inserted, and the abutting portion 27 ′ provided as the extending protrusion with the rotation of the movable member at the closed position. Comes into contact with the bottom wall 11 and the rear elastic arm portion 26 is in the form of a cantilever beam extending over the entire length, so that the rear elastic arm portion 26 is less likely to bend, that is, the rear contact portion 26A is less likely to be elastically displaced, thereby ensuring a large contact pressure. You can also

  In the embodiment, the case where a plurality of elastic arm portions are provided is illustrated, but the present invention is not limited to this, and three or more elastic arm portions can be provided. In that case, the contact portion located at the rearmost position is set so as to have a larger amount of interference with the flat conductor than the contact portion of the elastic arm portion between the restriction surface and the contact portion located at the rearmost position. The elastic arm portion formed with the contact portion shortens the elastic arm length during the elastic displacement process.

DESCRIPTION OF SYMBOLS 1 Connector 25A Front contact part 10 Housing 26 (back) (downward) elastic arm part 15 Receiving part (receiving space) 26A Back contact part 20 Terminal 27, 27 'Contact part 21A (rotation) support part 30 Movable member 25 ( Front) (Upper) Elastic arm 30A Restricting surface

Claims (7)

A housing in which a receiving portion for receiving a flat conductor and a terminal groove for holding a terminal are formed, and a terminal of the housing which is made while maintaining a flat plate surface of a metal plate and whose direction is perpendicular to the plate surface. It has a contact portion for contact with a flat conductor that is arranged and held in a groove and is inserted forward into a receiving portion of the housing, and a connection portion for soldering to a circuit board outside the housing. A plurality of terminals, and a movable member movable between an open position where the receiving portion is opened and a flat conductor can be inserted, and a closed position where the flat conductor after insertion is pressed against the contact portion of the terminal. In the flat conductor electrical connector
The terminal has a plurality of flexible elastic arm portions extending in the front-rear direction and having contact portions formed thereon, and a support arm portion positioned on the opposite side of the elastic arm portion with respect to the flat conductor,
The elastic arm portion is elastically displaceable in a direction perpendicular to the surface of the flat conductor when the contact portion is pressed by the flat conductor,
The support arm portion is formed with a support portion for supporting the movable member movably between the open position and the closed position at a tip side portion of the support arm portion,
The movable member in the housing or the open position has a regulating surface in contact with the upper surface of the flat conductor, and the distance between the regulating surface and the rear contact portion in the thickness direction of the flat conductor is narrower than the thickness of the flat conductor. Has been
The plurality of elastic arm portions in each terminal have their contact portions positioned differently in the front-rear direction, and at least the contact portion located at the rearmost portion has an interference amount with the surface of the flat conductor being inserted. And is provided so as to be in sliding contact with the surface,
When the flat conductor presses the contact portion with the movable member toward the closed position, the contact portion formed on the elastic arm portion while the elastic arm portion having the contact portion located at the rear end is in the process of elastic displacement. An electrical connector for a flat conductor, wherein the contact portion of the elastic arm portion is less likely to be elastically displaced by being in contact with the housing.   The flat connector electrical connector according to claim 1, wherein the contact portion located at the rearmost portion has a larger amount of interference with the flat conductor than other contact portions.   The plurality of elastic arm portions have two elastic arm portions, a front elastic arm portion formed with a front contact portion and a rear elastic arm portion formed with a rear contact portion, and the arm length of the rear elastic arm portion in a free state is The flat connector electrical connector according to claim 1 or 2, wherein the electrical connector is longer than the front elastic arm portion.   4. The electrical connector for a flat conductor according to claim 1, wherein the front elastic arm portion and the rear elastic arm portion extend rearward with a front portion position of the terminal as a base portion.   The flat connector electric connector according to claim 4, wherein the rear elastic arm portion is bent at a rear position of the terminal, and a tip having a contact portion faces forward.   2. The electrical connector for a flat conductor according to claim 1, wherein the contact portion is provided on the rear side of the contact portion in the longitudinal direction of the elastic arm portion.   2. The electrical connector for a flat conductor according to claim 1, wherein the contact portion is provided on the tip side of the contact portion in the longitudinal direction of the elastic arm portion.

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