JP2011159452A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for suppressing the fall-off of an actuator. <P>SOLUTION: On a casing 2 of the connector 1, a first stopper 29 is formed which is located above a front upper beam and in front of a lever part 53. On a rear lower beam 35 of a first terminal 3, a second stopper 35c is formed which is located in the rear of a cam part 51. When the lever part 53 abuts on the first stopper 29, the cam part 51 abuts on the second stopper 35c. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a connector, and more particularly, to a technique for suppressing actuator dropout.

  A connector used for a flat wire such as an FPC (Flexible Printed Circuit) or FFC (Flexible Flat Cable) is provided with an actuator for bringing the connector terminal and the electrode of the flat wire into pressure contact.

  The terminal of the connector disclosed in Patent Document 1 has a front beam extending forward from the base and a rear beam extending rearward from the base, and the front beam and the rear beam can be alternately moved up and down. Yes. The actuator cam is located below the rear beam, and can be rotated between a pressing position where the front beam is brought into contact with the flat wire by pushing up the rear beam and a release position where the lifting is released. ing. The actuator has a lever portion extending in a direction away from the cam portion, and when the lever portion is tilted backward from the standing posture, the cam portion rotates from the release position to the pressing position.

JP 2008-192408 A

  Incidentally, the connector disclosed in Patent Document 1 is provided with a rising portion for preventing it from coming out behind the cam portion. However, even if such a rising portion is provided, if a load toward the front rather than the original rear is applied to the lever portion in the standing posture, the cam portion may get over the rising portion and fall out backward. .

  The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a connector capable of suppressing the dropping of the actuator.

  In order to solve the above problems, the connector of the present invention includes one or a plurality of terminals, a housing that holds the terminals, and an actuator. The terminal extends forward from the upper portion of the base, the front upper beam located above the flat electric wire, the rear upper beam extending rearward from the upper portion of the base, and extends rearward from the lower portion of the base. And a rear lower beam. The front upper beam and the rear upper beam can be alternately moved up and down with the upper part of the base as a fulcrum. The actuator has a cam portion and a lever portion. The cam portion is positioned between the rear upper beam and the rear lower beam, and is rotatable between a pressing position that widens the gap and a release position that releases the spreading. The lever portion extends in a direction away from the rotation center of the cam portion, and falls backward from a standing posture when the cam portion rotates from the release position to the pressing position. The housing is formed with a first stopper positioned above the front upper beam and ahead of the lever portion. A second stopper located behind the cam portion is formed on the rear lower beam. When the lever portion abuts on the first stopper, the cam portion abuts on the second stopper.

  According to the present invention, even when a forward load is applied to the standing lever portion, the lever portion abuts on the first stopper located at the front, and the cam portion is located at the rear. By abutting against the stopper, the lever portion is prevented from falling forward and the cam portion is simultaneously lifted, and as a result, the actuator is prevented from falling off.

  The lever portion includes a comb-like portion in which a gap into which the rear upper beam is inserted is formed, and an operation portion that is further away from the cam portion than the comb-like portion, and is formed in the operation portion. You may contact | abut to the said 1st stopper with the contact surface which it was. According to this, it is possible to improve the contact area as compared with the case where the first stopper contacts the comb-shaped portion.

  Further, the operation portion may project forward from the comb-shaped portion in a posture in which the lever portion stands. According to this, since the first stopper comes into contact with the operation portion protruding forward from the comb-like portion, the first stopper can be positioned further forward.

  The contact surface may be an inclined surface that faces forward and downward with the lever portion standing upright. According to this, it is possible to make the direction of the force acting on the lever portion from the first stopper closer to the normal direction of the contact surface.

  The cam portion passes between the rear upper beam and the second stopper and is inserted between the rear upper beam and the rear lower beam.

  In addition, when the cam portion is positioned above and in front of the second stopper between the rear upper beam and the rear lower beam, and the lever portion is tilted forward from a standing posture. In addition, a lower end portion of the inclined surface may be positioned above the first stopper. According to this, when the cam portion is lowered, the first stopper comes into contact with the inclined surface, so that the lever portion is guided in an upright posture.

It is a perspective view of the connector concerning one embodiment of the present invention. It is a front view of the connector. It is a top view of the connector. It is sectional drawing of the connector. It is sectional drawing of the connector. It is sectional drawing of the connector. It is sectional drawing of the connector. It is sectional drawing of the connector. It is a figure explaining the assembly process of the connector. It is a figure explaining the assembly process of the connector. It is a figure explaining the assembly process of the connector. It is a figure explaining the assembly process of the connector. It is a figure explaining the assembly process of the connector. It is a figure explaining the assembly process of the connector.

  An embodiment of a connector of the present invention will be described with reference to the drawings.

  1A to 1C are a perspective view, a front view, and a top view of a connector 1 according to an embodiment of the present invention. 2A to 4B are cross-sectional views of the connector 1. 2A and 3 show a state where the cam portion 51 is in the release position, and FIG. 2B shows a state where the cam portion 51 is in the pressing position. 5A to 6B are views for explaining the assembly process of the connector 1.

  As shown in FIGS. 1A to 1C, the connector 1 has a substantially flat box-shaped housing 2 molded of an insulating resin material. An insertion port 1a is located on the front surface of the housing 2, and an end portion of a flat wire (not shown) is inserted therein. The flat wire is FPC, FFC, or the like, and in this embodiment, an electrode group is formed on both surfaces of the end portion. Inside the housing 2, first terminals 3 and second terminals 4 formed by punching a conductive metal thin plate are arranged alternately and in parallel at predetermined intervals. On the upper rear side of the housing 2, a horizontally long actuator 5 that is molded from an insulating resin material and extends to the left and right is attached. Support metal fittings 6 formed by bending a thin metal plate are attached to the left and right ends of the housing 2.

  The housing | casing 2 has the substantially plate-shaped top part 21 and bottom part 23 which oppose up and down, and the side part 25 which connects these right and left edge parts. A space formed between the top portion 21 and the bottom portion 23 is a space for accommodating the first terminal 3 and the second terminal 4. A plurality of grooves extending in the front-rear direction for inserting each of the first terminal 3 and the second terminal 4 are formed in each of the top portion 21 and the bottom portion 23. The top part 21 covers the upper part of the range excluding the rear part of the bottom part 23. The rear end portion of the top portion 21 is an edge portion extending left and right, and functions as a first stopper 29 as will be described later.

  As shown in FIGS. 2A and 2B, the first terminal 3 is formed in a substantially H shape. That is, the first terminal 3 includes a base portion 31 extending in the vertical direction, a front upper beam 32 extending forward from the upper portion of the base portion 31, a rear upper beam 33 extending rearward from the upper portion of the base portion 31, and a lower portion of the base portion 31. A front lower beam 34 extending forward and a rear lower beam 35 extending rearward from the lower portion of the base 31 are provided.

  The base 31 is located at the center in the front-rear direction in the housing 2, and the front upper beam 32 extends from the upper portion of the base 31 to the vicinity of the insertion port 1 a along the lower surface of the top portion 21 of the housing 2. The front upper beam 32 is located above the flat electric wire 99 inserted into the housing 2 from the insertion port 1a. A contact portion 32 a protruding downward is formed at the front end portion of the front upper beam 32, and this contact portion 32 a comes into contact with a terminal provided on the upper surface of the flat wire 99. The rear upper beam 33 extends from the upper portion of the base portion 31 to the rear of the rear end portion of the top portion 21. The rear upper beam 33 is positioned above the cam portion 51 of the actuator 5 and is inserted into the gap between the comb-shaped portions 55. The front upper beam 32 and the rear upper beam 33 can be elastically deformed so as to alternately move up and down with the upper portion of the base portion 31 as a fulcrum.

  The front lower beam 34 extends from the lower portion of the base portion 31 to the vicinity of the insertion opening 1 a along the upper surface of the bottom portion 23 of the housing 2. The front lower beam 34 is located below the flat electric wire 99 inserted into the housing 2 from the insertion port 1a. The front lower beam 34 is divided into two branches from the middle and extends forward. Among these, the upper branch part 34a located on the upper side can be elastically deformed in the vertical direction. A contact portion 34c protruding upward is formed at the tip of the upper branch portion 34a, and this contact portion 34c comes into contact with a terminal provided on the lower surface of the flat wire 99. On the other hand, the lower branch portion 34 b located on the lower side is supported by a support portion 28 that projects upward from the front end portion of the bottom portion 23 of the housing 2. An insertion hole 28a opened rearward is formed in the support portion 28, and the distal end portion of the lower branch 34b is inserted into the insertion hole 28a.

  The rear lower beam 35 extends rearward from the lower portion of the base portion 31, and reaches the rear side of the rear end portion of the bottom portion 23. The rear lower beam 35 includes a base end portion 35a positioned on the base end side, a contact portion 35b positioned obliquely above the rear of the base end portion 35a, and a second stopper positioned obliquely above the rear of the contact portion 35b. 35c. The contact portion 35 b is located below the cam portion 51 of the actuator 5 and contacts the cam portion 51. The second stopper 35c is located below the front end portion of the rear upper beam 33 and protrudes above the contact portion 35b. The second stopper 35 c is located behind the cam portion 51 of the actuator 5. A rear end portion of the rear lower beam 35 is provided with a contact portion 36 that is located behind the rear end portion of the bottom portion 23 and protrudes slightly below the lower surface of the bottom portion 23. The contact portion 36 contacts a terminal provided on the surface of the circuit board to which the connector 1 is attached.

  As shown in FIG. 3, the second terminal 4 is formed in an approximately H shape, like the first terminal 3. That is, the second terminal 4 includes a base 41 extending in the vertical direction, a front upper beam 42 extending forward from the upper portion of the base 41, a rear upper beam 43 extending rearward from the upper portion of the base 41, and a lower portion of the base 41. The front lower beam 44 extending forward and the rear lower beam 45 extending rearward from the lower portion of the base 41 are provided.

  The base 41 is located at the center in the front-rear direction in the housing 2, and the front upper beam 42 extends from the upper portion of the base 41 to the vicinity of the insertion port 1 a along the lower surface of the top portion 21 of the housing 2. The front upper beam 42 is located above the flat electric wire 99 inserted into the housing 2 from the insertion port 1a. A contact portion 42 a protruding downward is formed in the middle portion of the front upper beam 42, and this contact portion 42 a comes into contact with a terminal provided on the upper surface of the flat wire 99. The contact part 42a formed in the middle part of the front upper beam 42 and the contact part 32a formed at the front end part of the front upper beam 32 of the first terminal 3 are arranged in a staggered manner apart in the front-rear direction. To do. The rear upper beam 43 extends from the upper portion of the base portion 41 to the rear of the rear end portion of the top portion 21. The rear upper beam 43 is positioned above the cam portion 51 of the actuator 5 and is inserted into the gap between the comb-shaped portions 55. The front upper beam 42 and the rear upper beam 43 can be elastically deformed so as to alternately move up and down with the upper portion of the base 41 as a fulcrum.

  The front lower beam 44 extends from the lower portion of the base portion 41 to the vicinity of the insertion port 1 a along the upper surface of the bottom portion 23 of the housing 2. The front lower beam 44 is located below the flat electric wire 99 inserted into the housing 2 from the insertion port 1a. The front lower beam 34 has an upper branch portion 44a extending rearward from the distal end side. The upper branch portion 44a is elastically deformable in the vertical direction. A contact portion 44c protruding upward is formed at the tip of the upper branch portion 34a, and this contact portion 44c comes into contact with a terminal provided on the lower surface of the flat wire 99. The contact portion 44c formed in the middle portion of the front lower beam 44 and the contact portion 34c formed at the front end portion of the front lower beam 34 of the first terminal 3 are arranged in a staggered manner apart in the front-rear direction. To do. A front end portion of the front lower beam 44 is provided with a contact portion 46 that is located in front of the front end portion of the bottom portion 23 and projects slightly below the lower surface of the bottom portion 23. The contact portion 46 contacts a terminal provided on the surface of the circuit board to which the connector 1 is attached.

  The rear lower beam 45 extends from the lower portion of the base portion 31 to the vicinity of the rear end of the bottom portion 23 along the upper surface of the bottom portion 23 of the housing 2. The rear lower beam 45 is positioned below the cam portion 51 of the actuator 5 and contacts the cam portion 51. At the base end portion of the rear lower beam 45, a sawtooth press-fit portion 45a protruding upward is formed. The press-fit portion 45 a bites into the lower surface of the support portion 27 provided inside the housing 2. The support portion 27 is positioned in front of the cam portion 51 of the actuator 5 between the rear upper beam 43 and the rear lower beam 45.

  The actuator 5 is formed in a substantially rectangular plate shape extending left and right. One long side of the actuator 5 serves as an operation unit 57 for the user to turn with a finger. On the other long side of the actuator 5, there is provided a comb-like comb-like portion 55 in which slit-like gaps are arranged on the left and right. The tips of the comb-like portions 55 are connected by a cam portion 51 having a non-circular cross section. The cam portion 51 is disposed between the rear upper beam 33 and the rear lower beam 35 of the first terminal 3 or between the rear upper beam 43 and the rear lower beam 45 of the second terminal 4. The rear upper beam 33 of the first terminal 3 or the rear upper beam 43 of the second terminal 4 is inserted into the gap between the comb-shaped portions 55. The comb-like portion 55 and the operation portion 57 extending in a direction away from the turning center of the cam portion 51 function as a lever portion 53 for turning the cam portion 51.

  The cam portion 51 is provided so that the major axis direction is close to the thickness direction of the actuator 5. The comb-like portion 55 has a thickness approximately equal to the length of the cam portion 51 in the major axis direction. The operating portion 57 is formed to be thicker than the comb-shaped portion 55 so as to protrude from the comb-shaped portion 55 to one side in the thickness direction of the actuator 5. A contact surface 57 a inclined toward the comb-shaped portion 55 is formed on the side close to the comb-shaped portion 55 in the protruding portion of the operation portion 57. As shown in FIG. 2A, when the actuator 5 is in a standing posture, the operation portion 57 projects forward from the comb-like portion 55, and the contact surface 57a faces forward and downward.

  The cam portion 51 is positioned between the release position shown in FIGS. 2A and 3 and the pressing position shown in FIG. 2B when the operation portion 57 provided on the distal end side of the lever portion 53 is operated by the user. To rotate. In the pressing position shown in FIG. 2B, the cam portion 51 is in a posture in which the major axis direction is in the vertical direction, and pushes the rear upper beam 33 of the first terminal 3 upward. Specifically, the distance between the abutting portion 35b of the rear upper beam 33 and the rear lower beam 35 is set to be narrower than the major axis of the cam portion 51, and is pushed and widened when the cam portion 51 rises. Further, since the rear lower beam 35 abuts on the bottom 23 located on the lower side and displacement is limited, the cam portion 51 particularly displaces the rear upper beam 33.

  In this way, the rear upper beam 33 of the first terminal 3 is pushed upward by the cam portion 51, whereby the front upper beam 32 of the first terminal 3 is pushed downward and inserted into the housing 2. It contacts the upper surface of the flat wire 99. At this time, the flat electric wire 99 is sandwiched between the front upper beam 32 and the front lower beam 34. As a result, the contact portions 32 a and 34 c of the first terminal 3 are brought into pressure contact with the electrodes provided on both surfaces of the flat wire 99. The second terminal 4 is also deformed by the cam portion 51 in the same manner as the first terminal 3.

  On the other hand, in the release position shown in FIGS. 2A and 3, the cam portion 51 has a posture in which the major axis direction is along the front-rear direction, and the rear upper beam 33 of the first terminal 3 and the rear upper beam of the second terminal 4. Apart from 43, these pushes are released. With this release, the front upper beam 32 of the first terminal 3 and the front upper beam 42 of the second terminal 4 return from the pressed state, and leave the upper surface of the flat wire 99. Thereby, the flat electric wire 99 is released from being sandwiched by the front upper beam 32 and the front lower beam 34 of the first terminal 3 and from being sandwiched by the front upper beam 42 and the front lower beam 44 of the second terminal 4, It will be in the state which can be inserted / removed from the insertion port 1a.

  When the cam portion 51 is in the release position shown in FIGS. 2A and 3, the lever portion 53 is in an upright posture so that the extending direction from the cam portion 51 is along the vertical direction. And if the lever part 53 is tilted back from the attitude | position which stood up by the user, the cam part 51 will rotate from a cancellation | release position and will reach the press position shown by FIG. 2B. Thus, the connector 1 of the present embodiment is configured as a back flip type connector.

  Here, when the lever portion 53 is in a standing posture as shown in FIGS. 2A and 3, the lever portion 53 is provided in front of the contact surface 57 a at the rear end portion of the top portion 21 of the housing 2. The first stopper 29 is located. For this reason, when a load directed toward the front rather than the original rear is applied to the standing lever 53, the contact surface 57 a of the lever 53 contacts the first stopper 29. At this time, a force that rotates around the contact point between the contact surface 57a and the first stopper 29 acts on the lever portion 53, and the cam portion 51 is lifted obliquely upward rearward from the contact portion 35b. I will try. However, since the first terminal 3 shown in FIG. 2A has a second stopper 35c formed at a position behind the cam portion 51, the cam portion 51 abuts against the second stopper 35c, As a result, the floating of the cam part 51 is suppressed. Thereby, the drop-off of the actuator 5 is suppressed. In order to suppress the cam portion 51 from rising, it is preferable that the second stopper 35 c protrudes upward from the contact portion 35 b at least as much as the short diameter of the cam portion 51.

  Further, in the present embodiment, the contact surface 57a provided on the operation portion 57 of the lever portion 53 that extends to the left and right and the first stopper 29 that is the rear end portion that extends to the left and right of the top portion 21 of the housing 2 are in contact with each other. Since it contacts, it is possible to improve the contact area. In the present embodiment, the first stopper 29 comes into contact with the operation portion 57 protruding forward from the comb-shaped portion 55 in the lever portion 53 in the standing posture, so that the rear end portion of the top portion 21 of the housing 2. It is not necessary to project the rearward more than necessary. Further, in the present embodiment, since the contact surface 57a faces forward and downward when the lever portion 53 is in a standing posture, the first stopper 29 is placed on the contact surface 57a of the lever portion 53 that tends to fall forward. Butts in a direction close to the normal direction of the contact surface 57a, and as a result, it is possible to suppress the displacement of the lever portion 53 when it contacts the first stopper 29.

  As shown in FIGS. 4A and 4B, the support fitting 6 has an inner portion 61 and an outer portion 63 that extend in the front-rear direction. The inner part 61 and the outer part 63 are connected by a connecting part 65 provided at the rear part (see FIG. 1C). The inner side part 61 has a substantially U-shaped fixing part 61a opened downward and a beam part 61b extending forward from the fixing part 61a. The fixing portion 61a is disposed in a groove portion 25a formed in the inner rear portion of the side portion 25 of the housing 2 so that the open side faces downward. The fixing portion 61a presses the shaft portion 59 of the actuator 5 from above. The shaft portion 59 is provided at a position corresponding to the left and right outer sides of the cam portion 51 and serves as the center of rotation. The beam portion 61b is supported from below by a support arm 25b that extends forward from the side portion 25 of the housing 2 in a cantilevered manner. A flange portion 61c that protrudes downward is formed at the tip of the beam portion 61b. The collar portion 61 c is hooked on the ear portions (not shown) provided on both sides of the end portion of the flat wire 99 and functions as a retainer for the flat wire 99.

  The outer side portion 63 has a fixing portion 63a extending downward from the front portion and a fixing portion 63b extending downward from the central portion. The fixing portion 63a is inserted into a hole 25c extending in the vertical direction formed in the outer front portion of the side portion 25 of the housing 2 and reaches the lower end of the hole 25c. The rear side of the fixed portion 63a is formed in a bowl shape so as to bite into the side wall of the hole portion 25c. The fixing portion 63a is exposed to the left and right outward from the gap portion 25e of the side portion 25 (see FIG. 1A), and is soldered to the surface of the circuit board using the gap portion 25e. On the other hand, the fixing portion 63 b is inserted into a hole portion 25 d that is formed in the outer central portion of the side portion 25 of the housing 2 and extends in the vertical direction. The front side of the fixed portion 63b is formed in a bowl shape so as to bite into the side wall of the hole portion 25d.

  5A to 6B are views for explaining the assembly process of the connector 1. First, as shown in FIG. 5A, the second terminal 4 is inserted into the housing 2 from the front side (that is, the insertion port 1a side). Next, as shown in FIG. 5B, the first terminal 3 is inserted into the housing 2 from the rear side. Next, as shown in FIG. 5C, the actuator 5 is attached to the housing 2 from the rear side. Thereafter, as shown in FIG. 5D, the support fitting 6 is attached to the side portion 25 of the housing 2 from above. The connector 1 thus obtained is obtained by soldering the contact portion 36 of the first terminal 3, the contact portion 46 of the second terminal 4, and the fixing portion 63 c of the support bracket 6 to the surface of the circuit board. Fixed to.

  6A and 6B, when the actuator 5 is attached to the housing 2, the lever portion 53 of the actuator 5 stands upright so that the major axis direction of the cam portion 51 coincides with the front-rear direction. The posture is slightly inclined forward. The cam portion 51 passes between the rear upper beam 33 of the first terminal 3 and the second stopper 35c in a state where the major axis direction coincides with the front-rear direction, and between the rear upper beam 33 and the contact portion 35b. Inserted. At this time, the lower end portion of the contact surface 57 a of the lever portion 53 is positioned above the first stopper 29. That is, when the cam portion 51 is inserted between the rear upper beam 33 and the abutting portion 35b and is positioned above and in front of the second stopper 35c, the abutting surface 57a is directly above the first stopper 29. The lower end is located. According to this, when the cam part 51 is lowered and heads toward the contact part 35b, the lever part 53 is in an upright posture by the contact of the first stopper 29 with the contact surface 57a. Be guided to.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made by those skilled in the art.

  1 connector, 2 housing, 21 top, 23 bottom, 25 side, 25a groove, 25b support arm, 25c, 25d hole, 25e clearance, 27, 28 support, 28a insertion hole, 29 first stopper, 3 First terminal, 31 base, 32 front upper beam, 32a contact point, 33 rear upper beam, 34 front lower beam, 34a upper branch, 34b lower branch, 34c contact, 35 rear lower beam, 35a base end Part, 35b contact part, 35c second stopper, 36 contact part, 4 second terminal, 41 base part, 42 front upper beam, 42a contact part, 43 rear upper beam, 44 front lower beam, 44a upper branch part, 44c Contact section, 45 Rear lower beam, 45a Press-fit section, 46 Contact section, 5 Actuator, 51 Cam section, 53 Lever section, 55 Comb section, 57 Operation section, 57a Contact surface, 59 shaft portion, 6 support fitting, 61 inner portion, 61a fixed portion, 61b beam portion, 61c hook, 63 outer portion, 63a fixed portion, 63 b fixed portion 65 connecting portion, 99 flat wires.

Claims (6)

A base, a front upper beam extending forward from the upper portion of the base and positioned above the flat wire; a rear upper beam extending rearward from the upper portion of the base; and a rear lower beam extending rearward from the lower portion of the base. And the front upper beam and the rear upper beam can alternately move up and down with the upper part of the base as a fulcrum, and one or more terminals,
A housing for holding the terminal;
A cam portion that is located between the rear upper beam and the rear lower beam and that can be rotated between a pressing position that pushes the gap between them and a release position that releases the spreading, and a rotation of the cam portion. An actuator having a lever portion extending in a direction away from the center of movement and falling backward from a standing posture when the cam portion rotates from the release position to the pressing position;
With
The casing is formed with a first stopper positioned above the front upper beam and ahead of the lever portion,
The rear lower beam is formed with a second stopper located behind the cam portion,
When the lever portion abuts on the first stopper, the cam portion abuts on the second stopper;
A connector characterized by that. The lever portion has a comb-like portion in which a gap into which the rear upper beam is inserted is formed, and an operation portion that is further away from the cam portion than the comb-like portion, and the lever portion is formed on the operation portion. Abuts against the first stopper at the contact surface;
The connector according to claim 1. The operation portion projects forward from the comb-shaped portion in a posture in which the lever portion stands.
The connector according to claim 2. The contact surface is an inclined surface that faces forward and downward in a posture in which the lever portion stands.
The connector according to claim 2. The cam portion passes between the rear upper beam and the second stopper, and is inserted between the rear upper beam and the rear lower beam.
The connector according to claim 1. When the cam portion is positioned above and in front of the second stopper between the rear upper beam and the rear lower beam, and the lever portion is in a posture inclined forward from a standing posture, A lower end portion of the inclined surface is located above the first stopper;
The connector according to claim 2.

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