JP2016031830A - Connector for board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector for a board that can solve the following problem: when force acting in a direction of extracting a mounted signal transmission medium (force directing to the front side of a connector) is applied to the mounted signal transmission medium, a part of the force acts on an actuator, so that the actuator disengages from a housing.SOLUTION: An actuator 5 has a front emphasis portion 56 which is pushed and moved by a board 6 when the board 6 is inserted, a contact push-up portion for spreading the gap between pinching portions by pushing up a contact in connection with the push-up of the front emphasis portion, and a spring portion for supporting the contact push-up portion. The contact push-up portion has an insulator 51 covering a portion which comes into contact with the contact when the contact is pushed up, and a projection 21 for lowering the height of at least a part of the opening of a board insertion port of the housing 2. When the height between the lower end of the opening lowered by the projection and the lower surface of the housing is represented by first height H1 and the height between the upper end of the contact push-up portion and the lower surface of the housing is represented by second height H2, H1<H2.SELECTED DRAWING: Figure 18

Description

  The present invention relates to an electrical connector, and in particular, a flat signal transmission medium such as FPC (FLEXIBLE PRINTED CIRCUIT) or FFC (FLEXIBLE FLAT CABLE) is used as one connection object, and the signal transmission medium is electrically connected to another connection object. An electrical connector to be connected in general, which includes an actuator.

  In various electric devices and the like, an electric connector including an actuator is widely used to electrically connect a flat signal transmission medium such as FPC or FFC. Hereinafter, in this specification, an electrical connector is simply referred to as a connector. In addition, the direction having an opening for inserting a signal transmission medium (referred to as a board insertion port) is the front of the connector, and the opposite side is the rear. When the connector is mounted on the board, the direction in which the board-side surface faces is the lower side of the connector, and the opposite side is the upper side.

  In the connector, when a force is applied to the attached signal transmission medium in the direction of removal from the connector, that is, in front of the connector, the signal transmission medium and the actuator interfere with each other, and a part of the force is applied to the actuator. Something is communicated to.

  For example, Patent Document 1 discloses a connector 200 as shown in FIG. FIG. 26 shows a state where the signal transmission medium 201 is being inserted. The tip of the signal transmission medium 201 abuts against the guide locking portion 204 and pushes up the actuator 203. After that, when the signal transmission medium 201 is inserted to the final connection position, the guide locking portion 204 of the actuator 203 falls into the step portion of the position restricting portion 205, so that the signal transmission medium 201 is held without coming out of the insulating housing 206. Is done.

  When a force in front of the connector is applied to the signal transmission medium 201 in the held state without pushing down the release operation unit 202, the guide locking unit 204 of the actuator 203 and the position regulating unit 205 of the signal transmission medium 201 are moved. have a finger in the pie. As a result, part of the force applied to the signal transmission medium 201 is transmitted to the actuator 203. If a large force is momentarily applied at this time, the actuator 203 may be detached from the insulating housing 206.

  The connector 200 in a state where the actuator 203 is detached from the insulating housing 206 is in a damaged state and cannot operate normally. Moreover, this state may cause not only a problem that the connector 200 does not operate correctly but also another problem. That is, the actuator 203 that is detached from the connector 200 and is not fixed anywhere is a foreign object in the device incorporating the connector 200 and is not necessary in nature. For example, the actuator 203 may enter other movable parts of the device. There is a risk of inducing other failures.

  As described above, in the conventional connector, when a force for removing the signal transmission medium (force toward the connector) is applied to the installed signal transmission medium, a part of the force acts on the actuator, and the actuator May come off the housing.

JP2010-225448, paragraph 0051, FIG.

  The present invention has been made in view of such a situation, and a problem to be solved by the present invention is to provide a connector that prevents the actuator from falling off the housing.

  In order to solve the above-described problems, the present invention includes, as one aspect thereof, a housing, an actuator held by the housing, and a contact held by the housing, and a board to be connected is inserted from the outside. A connector for a board that is held between holding parts formed on a contact, and an actuator is pushed by a board when the board is inserted (pushing and moving), and the front force point part is pushed. A contact push-up portion that widens between the clamping portions by pushing up the contact, and a spring portion that supports the contact push-up portion, and the contact push-up portion comprises an insulator that covers a portion that contacts the contact when the contact is pushed up A protrusion that lowers the height of at least a part of the opening of the board insertion opening of the housing. When the height between the lower end of the opened opening and the lower surface of the housing is the first height H1, and the height between the upper end of the contact push-up portion and the lower surface of the housing is the second height H2, H1 < Provided is a board connector that is H2.

  The actuator may further include a rear force point portion that is pushed by the board when the board is removed from the connector.

  It is conceivable that the actuator is formed by bending a laminated body in which a metal layer made of metal and an insulating layer made of an insulator are laminated.

  Alternatively, the actuator may be formed by insert molding an insulator on a metal plate and bending it.

  The actuator includes a beam part for fixing to the housing, a spring part supported by the beam part, a contact push-up part supported by the spring part, and a front force point part projecting downward from the contact push-up part. Two sets of a beam portion, a spring portion, and a front force point portion may be provided, and the two spring portions may support both ends of the contact push-up portion.

  Alternatively, the actuator includes a beam portion for fixing to the housing, a spring portion supported by the beam portion, a contact push-up portion supported by the spring portion, and a front force point portion projecting downward from the contact push-up portion. It is good also as providing one set which consists of a part, a spring part, and a front force point part, and a spring part is arrange | positioned in the center of a contact raising part.

  The spring portion may be formed by folding a beam portion extending in the substrate insertion direction in the substrate removal direction.

  Alternatively, the spring portion may be formed by folding back the end portion of the contact push-up portion.

  According to one aspect of the present invention, the first height H1, which is the height of the opening with the protrusion lowered, is lower than the second height H2, which is the height of the contact push-up portion. For this reason, for example, when the board attached to the connector is removed, there is no possibility that the actuator is detached from the housing.

1 is a top perspective view of a connector 1 according to an embodiment of the present invention. 2 is a bottom perspective view of the connector 1. FIG. 3 is a top view of the connector 1. FIG. 1 is a front view of a connector 1. FIG. 2 is a bottom view of the connector 1. FIG. 3 is a perspective view of a first contact 3. FIG. 4 is a perspective view of a second contact 4. FIG. 3 is a perspective view of an actuator 5. FIG. 4 is a side view of the actuator 5. FIG. 3 is a perspective sectional view of an actuator 5. FIG. 2 is a perspective view of a signal transmission medium 6. FIG. 4 is a perspective view for explaining the positional relationship among a first contact 3, a second contact 4, and an actuator 5 inside the housing 2. FIG. FIG. 6 is a perspective view for explaining an assembly process of the connector 1. FIG. 6 is a perspective view for explaining an assembly process of the connector 1. FIG. 6 is a perspective view for explaining an assembly process of the connector 1. FIG. 5 is a cross-sectional view for explaining a process of assembling the actuator 5 to the housing 2 in the assembly process of the connector 1. FIG. 5 is a perspective cross-sectional view for explaining a process of assembling the actuator 5 to the housing 2 in the assembly process of the connector 1. FIG. 6 is a cross-sectional view for explaining the operation of the connector 1 when the signal transmission medium 6 is mounted. FIG. 6 is a perspective sectional view for explaining the operation of the connector 1 when the signal transmission medium 6 is mounted. 2 is a perspective view of an actuator 100. FIG. 2 is a perspective view of an actuator 110. FIG. 2 is a perspective view of an actuator 120. FIG. 3 is a perspective view of an actuator 130. FIG. 3 is a side view of an actuator 130. FIG. 3 is a front view of an actuator 130. FIG. 10 is a side view of a connector 200 described in Patent Document 1. FIG.

  A connector 1 according to an embodiment of the present invention will be described. The connector 1 is mounted on a printed board (not shown), for example, to electrically connect a board (a flat signal transmission medium 6 such as FPC or FFC) that is a connection target to wiring on the printed board. Connector.

  In this specification, the coordinate system is defined as follows. Referring to FIG. 1, the direction in which the signal transmission medium 6 is inserted into the connector 1 is the X axis. A virtual plane parallel to a printed circuit board (not shown) on which the connector 1 is placed is defined as an XY plane, and a straight line orthogonal to the X axis in the XY plane is defined as a Y axis. A direction orthogonal to the XY plane is taken as a Z-axis direction. The directions of arrows on the X axis, the Y axis, and the Z axis in the drawing indicate the respective positive directions. In particular, in the X axis, the direction in which the unmounted signal transmission medium 6 is inserted into the connector 1 is referred to as an insertion direction, and the direction in which the mounted signal transmission medium 6 is removed from the connector 1 is referred to as a removal direction.

  The connector 1 will be described with reference to FIGS. The connector 1 includes a housing 2, first contacts 3A to 3E, second contacts 4A to 4F, and an actuator 5. In particular, in FIG. 4, in the actuator 5, a lower beam portion 52A, a lower beam portion 52B, which will be described later, and a cantilevered upper beam portion 54A, an upper beam portion 54B and a lower beam portion 52A, 52B are connected. Part of the spring part 53 </ b> A and the spring part 53 </ b> B of the mold can be seen from the board insertion port of the housing 2. As will be described later, the housing 2 includes an opening convex portion 21 that narrows the opening downward. Although not shown in FIG. 4, the contact push-up portion 55 is hidden behind the opening convex portion 21.

  The housing 2 is formed by molding an insulating resin. The housing 2 is a hollow casing having a substantially rectangular parallelepiped outer shape. A substrate insertion opening is provided in the front, and the substrate insertion opening communicates with the hollow portion inside. Grooves for fitting and supporting the first contacts 3A to 3E, the second contacts 4A to 4F, and the actuator 5 are provided along the X direction in the drawing on the upper and lower surfaces inside.

  The first contacts 3 </ b> A to 3 </ b> E are the same component, and are collectively referred to as the first contact 3 here. The first contact 3 is formed by punching a metal plate such as phosphor bronze into a predetermined shape.

  The first contact 3 will be described with reference to FIG. The lower beam portion 31 is fitted into a recess provided on the inner lower surface of the housing 2 to fix the first contact 3 to the housing 2. As shown in FIGS. 2 and 3, the terminal portion 32 which is one end of the lower beam portion 31 protrudes from the rear portion of the housing 2 (opposite side of the board insertion port) and is connected to a wiring on a printed board (not shown) by, for example, soldering. Electrically connected. The convex portion at the substantially center of the lower beam portion 31 is a lower clamping portion 33. A connecting portion 34 stands upright between the terminal portion 32 and the lower clamping portion 33. Thus, while the lower end of the connection part 34 is connected to the lower beam part 31, the upper end of the connection part 34 bends in the extraction direction and becomes a cantilever. This beam is referred to as an upper beam portion 35. The upper beam part 35 is provided with an upper clamping part 36 at a position corresponding to the lower clamping part 33. Further, an actuator contact portion 37 that comes into contact with the actuator 5 and is pushed up by the actuator 5 in accordance with the operation of the actuator 5 is provided before the upper holding portion 36. That is, the upper beam portion 35 that is a cantilever is pushed up by the actuator 5. In the following description, the lower beam part 31, the terminal part 32, the lower clamping part 33, the coupling part 34, the upper beam part 35, the lower clamping part 36, and the actuator contact part 37 of each of the first contacts 3A to 3E will be referred to. In this case, as in the description of the first contacts 3A to 3E, the reference numerals are suffixed with alphabets A to E.

  The second contacts 4A to 4F are the same component, and will be described collectively as the second contact 4 here. The second contact 4 is formed by punching a metal plate such as phosphor bronze into a predetermined shape.

  The second contact 4 will be described with reference to FIG. The lower beam portion 41 is fitted into a recess provided on the inner lower surface of the housing 2 to fix the second contact 4 to the housing 2. The terminal portion 42 located at the front end of the lower beam portion 41 protrudes from the lower portion of the housing 2 at the front portion of the housing 2 and is electrically connected to wiring on a printed board (not shown) by, for example, soldering. The convex portion at the substantially center of the lower beam portion 41 is a lower clamping portion 43. A connecting portion 44 stands upright in front of the rear end of the lower beam portion 41. In this way, the lower end of the connecting portion 44 is connected to the lower beam portion 41, while the upper end of the connecting portion 44 is bent in the removal direction to form a cantilever. This beam is referred to as an upper beam portion 45. The upper beam portion 45 is provided with an upper clamping portion 46 at a position corresponding to the lower clamping portion 43. Further, an actuator contact portion 47 that comes into contact with the actuator 5 and is pushed up by the actuator 5 according to the operation of the actuator 5 is provided before the upper clamping portion 46. That is, the upper beam portion 35 that is a cantilever is pushed up by the actuator 5. In the following description, the lower beam portion 41, the terminal portion 42, the lower clamping portion 43, the connecting portion 44, the upper beam portion 45, the lower clamping portion 46, and the actuator contact portion 47 of each of the second contacts 4A to 4F will be referred to. In this case, as in the description of the second contacts 4A to 4F, the reference numerals are suffixed with alphabets A to E.

  The actuator 5 is made of metal and is made of, for example, copper alloy or stainless steel. As can be seen from FIGS. 8, 9, and 10, the actuator 5 is formed by forming an insulating layer made of an insulator on one surface of a single metal plate, punching it into a predetermined shape, and then bending it. Is formed. In FIG. 8, each part of the insulating layer is shown as insulating layers 51A, 51B, 51C.

  The actuator 5 includes lower beam portions 52A and 52B, spring portions 53A and 53B, upper beam portions 54A and 54B, a contact lifting portion 55, front force point portions 56A and 56B, and rear force point portions 57A and 57B.

  The lower beam portion 52 </ b> A is fitted in a groove provided on the inner lower surface of the housing 2 to fix the actuator 5 to the housing 2. The same applies to the lower beam portion 52B.

  The spring portion 53A connects the lower beam portion 52A and the upper beam portion 54A, and acts as a spring. Similarly, the spring portion 53B connects the lower beam portion 52B and the upper beam portion 54B and acts as a spring.

  The front force point portion 56 </ b> A has an inclined portion that descends from the front to the rear of the connector 2. When the signal transmission medium 6 is further pushed into the connector 2 from a state in which the inclined portion and the signal transmission medium 6 inserted from the outside are in contact, the front force point portion 56A rides on the signal transmission medium 6 by the inclined portion. Similarly, the front force point portion 56 </ b> B has an inclined portion that descends from the front to the rear of the connector 2. When the signal transmission medium 6 is further pushed into the connector 2 from a state in which the inclined portion and the signal transmission medium 6 inserted from the outside are in contact, the front force point portion 56B rides on the signal transmission medium 6 by the inclined portion.

  This will be described with reference to the signal transmission medium 6 in FIG. When the signal transmission medium 6 is pushed into the connector 2, the end 61A of the signal transmission medium 6 comes into contact with the front force point portion 56A. When the signal transmission medium 6 is further pushed in from this state, the front force point portion 56A rides on the surface of the signal transmission medium 6 from the end 61A and slides on the surface. Notches 62A and 62B are provided on the left and right sides (sides along the X-axis direction) of the signal transmission medium 6, respectively. When the front force point 56A that has slid along the surface of the signal transmission medium 6 reaches the end 63A of the notch 61A, the front force point 56A and the rear force point 57A are accommodated in the notch 62A. At this time, the signal transmission medium 6 is attached to the connector 2. The same applies to the front force point portion 56B.

  The rear force point portion 57A has an inclined portion that rises obliquely upward from the lower end of the front force point portion 56A. When the signal transmission medium 6 attached to the connector 2 is pulled with a force stronger than a certain level, the rear force point portion 57A rides on the surface of the signal transmission medium 6 at the notch end portion 63A, and the surface It slides on and slides down from the surface of the signal transmission medium 6 at the end 61A. The same applies to the rear force point portion 57B.

  The first contact 3, the second contact 4, and the actuator 5 described above are arranged in the positional relationship as shown in FIG. It should be noted that the contact between the first contact 3 and the second contact 4 and the actuator 5 is made through the insulating layer 51C. The actuator contact portions 37A to 37E of the first contacts 3A to 3E and the actuator contact portions 47A to 47F of the second contacts 4A to 4F are not in direct contact with the metal plate 50 and are in contact with each other via the insulating layer 51C. ing. For this reason, even if it contacts the metal actuator 5, the first contacts 3A to 3E and the second contacts 4A to 4F are not electrically connected to each other via the actuator 5.

  Next, the assembly process of the connector 1 will be described. First, the housing 2 in which none of the first contact 3, the second contact 4, and the actuator 5 is incorporated is prepared, and the first contacts 3A to 3E are inserted from the back of the housing 2 as shown in FIG. To do. Next, as shown in FIG. 14, the second contacts 4A to 4F are inserted from the front surface of the housing 2 in which the first contacts 3A to 3E are incorporated. Next, as shown in FIG. 15, the actuator 5 is inserted from the front surface of the housing 2 in which the first contacts 3A to 3E and the second contacts 4A to 4F are incorporated.

  Here, in the assembly process of the connector 1, the process of inserting the actuator 5 will be further described with reference to FIGS.

  FIG. 16 is a matrix of 4 rows and 3 columns. In each row, three sectional views of the housing 2 are described. The first row “before insertion” is a cross section immediately before the actuator 5 is inserted into the housing 2. The second row “In-insertion 1” is a cross section when the contact lifting portion 55 of the actuator 5 reaches the board insertion opening. The third row “In-insertion 2” is a cross section of the process in which the contact lifting portion 55 slides and moves under the opening convex portion 21 described later. The fourth row “after insertion” is a cross section when the actuator 5 is completely inserted into the housing 2. The “ACT cross section” in the first column is a cross section in the portion of the actuator 5 and the contact lifting portion 55 in FIG. 8 where the insulating layer 51C faces upward due to the folding of the metal plate. The second row “SMT cross section” is a cross section on the outer end face of the lower beam portion 52B, the spring portion 53B, and the upper beam portion 54B in FIG. The third row “force point section” is a section on the outer surface of the downward convex portion forming the front force point portion 56B and the rear force point portion 57B. The same applies to FIG. 17 except that it is a perspective sectional view.

  As shown in FIGS. 16 and 17, in the vicinity of the board insertion opening of the housing 2, an opening convex portion 21, which is a protrusion protruding from the upper surface to the lower face in order to reduce the height of the opening of the board insertion opening, is provided. Is provided. The opening convex portion 21 also includes a groove for fitting and supporting the first contacts 3A to 3E, the second contacts 4A to 4F, and the actuator 5.

  A slope 22 is provided in front of the opening protrusion 21. As the actuator 5 is inserted into the housing 2, the contact lifting portion 55 comes into contact with the inclined surface 22. When the actuator 5 is further pushed into the housing 2 from this state, the contact lifting portion 55 moves downward along the inclined surface 22 as shown in the second row “In-insertion 1” in FIG. 16, and the spring portion 53A. 53B is elastically deformed. When the actuator 5 is further pushed into the housing 2, the spring portions 53 </ b> A and 53 </ b> B are elastically deformed, and the contact lifting portion 55 moves toward the back of the housing 2 while contacting the inclined surface 22.

  As shown in “In-insertion 2” in the third row of FIG. 3, after the contact lifting portion 55 reaches the lower end of the opening convex portion 21, when the actuator 5 is further pushed into the housing 2, the spring portions 53A and 53B are elastic. The contact lifting portion 55 is deformed and moves toward the back of the housing 2 while being in contact with the lower end of the opening convex portion 2.

  Behind the opening convex portion 21 is a surface extending substantially vertically downward from the inner upper surface of the housing 2. This surface is referred to as an actuator restraining surface 23. In the second row “inserting 1” and the third row “inserting 2”, the opening convex portion 21 pressed the elastically deformed actuator 5 vertically downward, but the contact lifting portion 55 reached the actuator restraining surface 23. Then, pressing by the opening convex part 21 is lost. For this reason, when the contact lifting portion 55 moves beyond the actuator restraining surface 23 to the back of the housing 2, the spring portions 53A and 53B return to their original shapes, and as shown in “after insertion” in the fourth row of FIG. The lifting portion 55 operates to jump up in the hollow portion of the housing 2. Thereafter, the contact lifting portion 55 is positioned above the lower end of the actuator restraining surface 23. As will be described later, this positional relationship between the contact lifting portion 55 and the lower end of the actuator restraining surface 23 can prevent the actuator 5 from falling off the housing 2.

  Here, the height between the lower end of the opening convex portion 21 and the lower surface of the housing 2, particularly the height between the lower end of the actuator restraining surface 23 and the lower surface of the housing 2 is defined as a first height H <b> 1. When the height between the upper end of the contact lifting portion 55 and the lower surface of the housing 2 when no is added is the second height H2, the relationship of H1 <H2 is established.

  Through the above assembly process, the first contact 3, the second contact 4, and the actuator 5 are arranged in the housing 2 so as to have the positional relationship shown in FIG. 12, thereby completing the connector 1.

  Next, the operation of the connector 1 when the signal transmission medium 6 is mounted will be described with reference to FIGS.

  FIG. 18 is a matrix of 3 rows and 2 columns. In each row, two sectional views of the housing 2 are described. The first row “initial state” is a cross section immediately before the signal transmission medium 6 is inserted into the connector 1. In the second line “substrate (FPC) insertion process”, the tip of the signal transmission medium 6 passes through the opening convex portion 21 and comes into contact with the front force point portion 56B of the actuator 5, and the front force point portion 56B is on the signal transmission medium 6. It is a section in the state where it got on. The third line “completion completion” is a cross section in a state where the signal transmission medium 6 is further pushed in and the rear force point portion 57B slides down the notch end portion 63B and is caught by the notch 62B. The “ACT cross section” in the first column is a cross section in the portion of the actuator 5 and the contact lifting portion 55 in FIG. 8 where the insulating layer 51C faces upward due to the folding of the metal plate. The second row “cross section of the contact portion” is a cross section along the outer surface of the second contact 4F. The same applies to FIG. 19 except that it is a perspective sectional view. In the first row “initial state” in FIG. 18, the height H1 between the lower end of the opening convex portion 21 and the lower surface of the housing 2 and the upper end of the contact lifting portion 55 when no external force is applied are shown. The height H2 between the lower surface of the housing 2 is shown.

  As shown in the first line (initial state) of FIGS. 18 and 19, the signal transmission medium 6 that is not yet attached to the connector 1 is inserted from the board insertion port of the connector 1. The board insertion port of the connector 1 is narrowed by the opening convex portion 21, but the inclined surface 22 guides the tip of the signal transmission medium 6 to facilitate insertion. When the signal transmission medium 6 is pushed into the connector 1 along the guide of the slope 22, the tip of the signal transmission medium 6 passes through the space between the opening convex portion 21 and the lower surface of the housing 2, It passes under the actuator restraining surface 23 and contacts the front force point portion 56 </ b> B of the actuator 5.

  When the signal transmission medium 6 is further pushed in from this state, the tip of the signal transmission medium 6 pushes up the inclination provided in the front force point portion 56B. Accordingly, the contact lifting portion 55 moves upward, and the spring portion 53B is elastically deformed.

  The contact lifting portion 55 is in contact with the lower surfaces of the actuator contact portions 37A to 37E of the first contacts 3A to 3E via the insulating layer 51C. Similarly, the contact lifting portion 55 contacts the lower surfaces of the actuator contact portions 47A to 47F of the second contacts 4A to 4F via the insulating layer 51C. When the contact lifting portion 55 moves upward, the first contacts 3A to 3E and the second contacts 4A to 4F are elastically deformed accordingly, and the actuator contact portions 37A to 37E and the actuator contact portions 47A to 47F are pushed up. At this time, since the contact between the first contact 3 and the second contact 4 and the actuator 5 is performed via the insulating layer 51C, the first contact 3 and the second contact 4 are electrically connected. There is nothing.

  When the signal transmission medium 6 is further pushed in, the front force point portion 56B completely climbs over the signal transmission medium 6 as shown in the second row of FIG. 18 and FIG. 19 (board (FPC) insertion process). At this time, the tip of the upper clamping portion 36 of the first contact 3 is configured to be higher than the tip of the front force point portion 56B. The same applies to the upper clamping portion 46 of the second contact 4. With this configuration, it is possible to avoid the upper holding portions 36 and 46 from coming into contact with the signal transmission medium 6 in the board (FPC) insertion process. Even in the corresponding process of removing the signal transmission medium 6 from the connector 1, the upper holding portions 36 and 46 and the signal transmission medium 6 can be kept in a non-contact state. Thereby, when the signal transmission medium 6 is attached to the connector 1 or removed, it is possible to avoid the upper clamping portions 36 and 46 from damaging the surface of the signal transmission medium 6.

  When the signal transmission medium 6 is further pushed into the connector 1, the lower end of the front force point 56B slides on the upper surface of the signal transmission medium 6 and reaches the notch end 63B. The force point portion 57B slides and is caught in the notch 62B. The state at this time is shown in the third row (completion completion) of FIGS.

  As the front force point portion 56B and the rear force point portion 57B slide down into the notch 62B, the force against the elastic deformation of the spring portion 53B disappears, the shape of the spring portion 53B returns to the initial state, and the contact lifting portion 55 Move downward. Along with this, the force that lifted the actuator contact portions 37 and 47 upward disappears, and the first contact 3 and the second contact 4 move downward, but the notches are formed under the upper holding portions 36 and 46. There is a wiring pattern formed on the upper surface of the signal transmission medium 6. For this reason, the upper holding parts 36 and 46 are respectively lowered on the wiring pattern of the signal transmission medium 6. The upper clamping unit 36 pairs with the lower clamping unit 33 to sandwich the signal transmission medium 6, and the upper clamping unit 47 pairs with the lower clamping unit 47 to sandwich the signal transmission medium 6.

  As described above, when the fitting is completed, the elastic deformation of the actuator 5 is completely released, while the elastic deformation of the first contact 3 and the second contact 4 partially remains due to the support of the signal transmission medium 6. The remaining elastic deformation acts on each of the first contact 3 and the second contact 4 as a force for maintaining contact with the wiring pattern of the signal transmission medium 6.

  Here, a case is considered in which force is applied to the signal transmission medium 6 that has been fitted into the connector 1 in the direction of being pulled out from the connector 1. When a force of a predetermined magnitude or more is applied, the notched end portion 63B of the signal transmission medium 6 pushes up the rear force point portion 57B. As a result, the rear force point portion 57 </ b> B rides on the upper surface of the signal transmission medium 6. Thereafter, when the signal transmission medium 6 is further pulled, the signal transmission medium 6 can be removed from the connector 1. Thus, when the signal transmission medium 6 is removed, a force in the removal direction also acts on the actuator 5.

  The actuator 5 is fixed to the housing 2 by attaching the lower beam portions 52 </ b> A and 52 </ b> B to a groove provided on the lower surface of the housing 2.

  As described above, the present invention has been described according to the embodiment and modifications thereof, but the present invention is not limited to this.

  An actuator 100 which is a modification of the actuator 5 is shown in FIG. In the actuator 5, a metal plate having an insulating layer formed on one surface is bent, and in particular, the contact lifting portion 55 is folded so that the insulating layer is on the upper side, thereby preventing a short circuit between the contacts. On the other hand, in the actuator 100, the insulating layer 101 is provided only on the surface in contact with the contact among the metal plates forming the contact lifting portion 55.

  Such a structure can be realized, for example, by selectively forming an insulating layer only at a corresponding portion of the metal plate. Or after forming an insulating layer in the whole surface of one side of a metal plate, it can implement | achieve by removing insulating layers other than the applicable location by an etching etc. In the actuator 100, it is not necessary to fold the metal plate in order to provide the insulating layer of the contact lifting portion 55.

  FIG. 21 shows an actuator 110 which is another modification of the actuator 5. The actuator 110 has a mold 111 that covers the periphery of the metal plate that becomes the contact lifting portion 55. The mold 111 is molded by mold-in.

  An actuator 120 which is another modification of the actuator 5 is shown in FIG. The actuator 5 includes a pair of SMT portions including a lower beam portion 52A, a spring portion 53A, and an upper beam portion 54A at one end portion of the contact lifting portion 55, and a lower beam portion 52B and a spring portion at the other end portion. The actuator 120 has a structure including another set of SMT portions including 53B and an upper beam portion 54B, whereas the actuator 120 includes a lower beam portion 52, a spring portion 53, and an upper beam portion 54 in the center of the contact lifting portion 55. This is a structure having only one set of SMT parts. By making the SMT portion as one set, the width of the actuator 120 can be narrowed, so the width of the connector 1 can be narrowed. As with the actuator 5, an insulating layer is formed on one surface of a single metal plate, and the insulating layers 121 </ b> A and 121 </ b> B are provided on the contact lifting portion 55 by folding back at the contact lifting portion 55.

  An actuator 130, which is another modification of the actuator 5, will be described with reference to FIGS. It is the same as the actuator 5 in that the insulating layer 51C is provided on the contact lifting portion 55 by forming an insulating layer on one surface of one metal plate and folding it back at the contact lifting portion 55.

  Each of the actuator 5 and its deformation forms a spring portion by folding back the beam portion extending in the insertion direction of the signal transmission medium 6 in the removal direction. On the other hand, in the actuator 130, the spring portions 131A and 131B are formed by folding back the end portion of the contact push-up portion.

  In the above-described actuators such as the actuator 5, the lower beam portion is extended beyond the position of the contact lifting portion and then folded back to form a spring portion. The upper beam portion supported in a cantilever shape by the spring portion is extended from the folded back to the board insertion port side of the connector. The contact lifting portion is supported at the tip of the upper beam portion. Thus, since the lower beam portion and the upper beam portion are folded back in the depth direction, a certain amount of depth is required for the actuator, and as a result, a certain amount of depth is also required for the connector incorporating the actuator. On the other hand, since the actuator 130 uses a spring portion made of a metal plate bent just below the contact lifting portion 55, the depth of the actuator 130 can be shortened, and as a result, the depth of the connector 1 can be shortened. can do.

  Further, in the above-described actuator 5 and its modification, the both ends of the contact lifting portion 55 are bent downward, and the inverted triangular plate is used as the front force point portion and the rear force point portion. The inclination acting as the front force point portion and the rear force point portion is formed not by bending the plate but by the cut shape of the plate. On the other hand, in the actuator 130, the metal plate is bent to form a slope that acts as the front force point portions 132A and 132B and the rear force point portions 133A and 133B.

1 Connector 1
2 Housing 3, 3A-3E First contact 4, 4A-4F Second contact 5, 100, 110, 120, 130 Actuator 6 Signal transmission medium 21 Opening convex portion 22 Slope 23 Actuator restraining surface 31 Lower beam portion 32 Terminal portion 33 Lower clamping part 34 Connecting part 35 Upper beam part 36 Upper clamping part 37 Actuator contact part 41 Lower beam part 42 Terminal part 43 Lower clamping part 44 Connecting part 45 Upper beam part 46 Upper clamping part 47 Actuator contact parts 51A, 51B, 51C, 101, 121A, 121B Insulating layer 52A, 52B Lower beam part 53A, 53B, 131A, 131B Spring part 54A, 54B Upper beam part 55 Contact push-up part 56A, 56B, 132A, 132B Front force point part 57A, 57B, 133B Rear force point part 61A, 61B End 62A, 62B Notch 63A notch end 111 mold

Claims (8)

A board connector comprising a housing, an actuator held by the housing, and a contact held by the housing, wherein a board as a connection object is inserted from the outside and held between clamping parts formed in the contact Because
The actuator includes a front force point portion that is pushed by the substrate when the substrate is inserted, a contact push-up portion that widens the clamping portion by pushing up the contact in accordance with the pushing of the front force point portion, A spring portion supporting the contact push-up portion,
The contact push-up portion includes an insulator that covers a portion that comes into contact with the contact when the contact is pushed up,
A projection for lowering the height of at least a part of the opening of the substrate insertion port of the housing;
The height between the lower end of the opening lowered by the protrusion and the lower surface of the housing is defined as a first height H1, and the height between the upper end of the contact push-up portion and the lower surface of the housing is defined as a second height H2. When the board connector H1 <H2.   The board connector according to claim 1, wherein the actuator further includes a rear force point portion that is pushed by the board when the board is removed from the connector.   3. The board connector according to claim 1, wherein the actuator is formed by bending a laminated body formed by laminating a metal layer made of metal and an insulating layer made of an insulator.   The board connector according to claim 1, wherein the actuator is formed by insert-molding an insulator on a metal plate and bending it. The actuator includes a beam part for fixing to a housing, a spring part supported by the beam part, the contact push-up part supported by the spring part, and the front force point part projecting downward from the contact push-up part. With
The actuator includes two sets of the beam part, the spring part, and the front force point part,
The board connector according to any one of claims 1 to 4, wherein the spring portions of the two sets support both ends of the contact push-up portion. The actuator includes a beam part for fixing to a housing, a spring part supported by the beam part, the contact push-up part supported by the spring part, and the front force point part projecting downward from the contact push-up part. With
One set comprising the beam part, the spring part, and the front force point part,
The board connector according to claim 1, wherein the spring portion is disposed at a center of the contact push-up portion.   The board connector according to claim 5, wherein the spring part is formed by folding back the beam part extending in the board insertion direction in the board removal direction.   The board connector according to claim 5, wherein the spring part is formed by folding back an end part of the contact push-up part.

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