JP4394708B2 - Coaxial connector - Google Patents

Description

  The present invention relates to a coaxial connector that is connected to a terminal of a coaxial cable and is connected to a mating connector whose fitting connection direction is a direction orthogonal to the wiring direction of the coaxial cable such as a surface-mounting coaxial connector.

  Conventionally, a coaxial connector 100 connected to a terminal of a coaxial cable and connected to a mating connector such as a surface mount type coaxial connector in a vertical direction orthogonal to the wiring direction (for example, horizontal direction) of the coaxial cable, as shown in FIG. The center contact 101 and the external contact 102 are constituted by an insulator 103 that insulates both of them.

  The center contact 101 is connected to the center terminal of the mating connector, so that the center contact portion 101a projecting downward in the figure, which is the direction of connection with the mating connector, and the center of the coaxial cable 150 arranged in the horizontal direction. A central connection portion 101b for connection to the conductor 151 is provided.

  In addition, the external contact 102 has a cylindrical contact portion 102a formed in a cylindrical shape around the center contact portion 101a via an insulator 103 in order to connect to an external terminal of the mating connector, and the cylindrical contact portion 102a. Clamping the lid portion 102b covering the upper end opening, the insulator 103 protruding in the horizontal direction, holding the insulator 103, and the external conductor 152 of the coaxial cable 150 arranged in the horizontal direction It has an external connection part 102d and a skin clamp part 102e. This external contact 102 is usually formed integrally by pressing a single conductive metal plate in order to reduce the number of parts and reduce the processing cost, and the cylindrical contact portion 102a has a pair of strips. It is formed by winding a piece around a vertical axis.

  The lid portion 102b integrally connected to the cylindrical contact portion 102a covers the upper end opening of the cylindrical contact portion 102a. Are connected at the upper end, and the connecting portion is bent substantially at a right angle toward the rear. The clamp part 102c, the external connection part 102d, and the outer skin clamp part 102e that are linearly coupled from the other side of the lid part 102b are arranged toward the rear in the horizontal direction, and are arranged along the coaxial cable 150 to be connected.

  Because of the processing convenience of the external contact 102, the joint 104 of the cylindrical contact portion 102a is always in the wiring direction (rear) of the coaxial cable 150 to be connected. If the coaxial cable 150 is inadvertently pulled up while the two are connected, the joint 104 between the pair of strips is opened, and the mating strength with the mating connector is weakened, so that there is a problem that the mating connector comes off. It was.

  Therefore, in order to solve this problem, the applicant of the present application divides the external contact 102 into an inner case on the cylindrical contact portion side and an outer case on the lid portion side, and a joint appears in the wiring direction of the coaxial cable 150. Invented a coaxial connector 120 (see Patent Document 1).

Japanese Patent No. 314082 (specification item 0009, the same item 0032 thru 0034, FIG. 1, FIG. 16, FIG. 17)

  Hereinafter, the conventional coaxial connector 120 will be described with reference to FIGS. 11 to 13. In these drawings, the same number is attached | subjected about the structure corresponded to the structure of the coaxial connector 100. FIG. The external contact provided in the coaxial connector 120 includes an inner case 121 shown in FIG. 12 and an outer case 122 shown in FIG.

  In the inner case 121, a cylindrical contact portion 121a, an external connection portion 102d, and a skin clamp portion 102e are integrally formed by punching a single conductive metal plate. The cylindrical contact portion 121 a of the inner case 121 is also formed by winding a pair of strips around a vertical axis, but unlike the cylindrical contact portion 102 a of the coaxial connector 100, A seam 123 is formed on the front side opposite to the wiring direction of the coaxial cable 150 wired to the right). Therefore, the connection part between the external connection part 102d and the outer skin clamp part 102e that are connected in a straight line is the rear side of the cylindrical contact part 121a that is the wiring direction of the coaxial cable 150, and is connected on the rear side of the cylindrical contact part 121a. The part is folded back at a right angle.

  On the other hand, since the upper end of the cylindrical contact portion 121a opens in the outer case 122, the lid portion 102b that covers the opening portion and the insulator 103 that protrudes in the horizontal direction are clamped, and the clamp portion 102c that holds the insulator 103 is clamped. Are integrally formed by punching out one conductive metal plate. At the front end of the lid portion 102b, an engagement notch 122b cut out from the lower side in front of the cylindrical cover 122a and a cylindrical cover 122a in which an engagement hole 122c is formed on the side are integrally provided. .

  The cylindrical cover 122a covers the upper periphery of the cylindrical contact portion 121a of the inner case 121. As shown in FIG. 11, the insulator 103 containing the center contact 101 is sandwiched between the inner case 121 and the outer case 122. The engagement hook 121b protruding from the front end of the cylindrical contact portion 121a is engaged with the engagement notch 122b to prevent the cylindrical contact portion 121a from opening at the joint 123 and to illustrate the cylindrical contact portion 121a. The engagement protrusions that are not engaged are engaged with the engagement holes 122c from the inside to engage both the inner case 121 and the outer case 122.

  Furthermore, the outer case 122 is folded inward, the rearwardly projecting insulator 103 and the inner case 121 behind the cylindrical contact portion 102a are clamped from the outer side and clamped, whereby the outer case 122 is insulated. 103 and the inner case 121 are fixed. Thereafter, the external connection portion 102d and the outer skin clamp portion 102e arranged along the rear of the coaxial cable 150 in the wiring direction are clamped from the outside to the outer conductor 152 and the insulation jacket of the coaxial cable 150, respectively, and the outer contact is connected to the outer conductor. The terminal of the coaxial cable 150 is fixed to the terminal 152.

  According to the coaxial connector 120 configured in this way, since the joint 123 of the cylindrical contact portion 121a does not appear in the wiring direction (rearward) of the coaxial cable 150, even if the coaxial cable 150 is pulled up carelessly, The contact portion 121a is not unfolded, is fitted with a mating connector with an appropriate fitting force, and is not detached from the mating connector.

  However, since the external contact forming the cylindrical contact portion is formed by two parts of the inner case 121 and the outer case 122, the number of parts is increased and the engaging part for integration is provided at the corresponding part of each. An extra process of forming and engaging each other and then assembling is required, resulting in high costs.

  Further, since the cylindrical cover 122a of the outer case 122 is formed to overlap the cylindrical contact portion 121a to be fitted and connected to the mating connector, not only an extra metal material is used but also the outside of the mating portion with the mating connector. The diameter increases. Furthermore, since the cylindrical cover 122a is provided above the cylindrical contact portion 121a connected to the mating connector, the height in the fitting direction is also increased, which is an obstacle to the reduction in size and height of this type of coaxial connector. It was.

  Therefore, a method of welding so that the joint of the pair of strips forming the cylindrical contact portion does not open or forming the cylindrical contact portion by drawing without bending is also studied. This requires an expensive processing step and is expensive, and is not suitable for mass-produced coaxial connectors.

  The present invention has been made in consideration of such conventional problems, and even when the external contact is formed from a single conductive metal plate only by pressing, the joint of the cylindrical contact portion is widened. An object of the present invention is to provide a coaxial connector that does not inadvertently come out of the mating connector.

In order to achieve the above-described object, the coaxial connector according to claim 1 includes a center contact portion formed downward in the vertical direction to be connected to the mating connector, and wiring from the rear in the horizontal direction upward of the center contact portion. A central contact having a central connection portion connected to a central conductor of the coaxial cable, a vertical insulation portion in which an insertion hole through which the central contact portion is inserted is formed in a vertical direction, and a horizontal insulation portion accommodating the central connection portion An insulator that surrounds and holds the central contact, a cylindrical contact portion that is bent in a cylindrical shape along the periphery of the vertical insulating portion with the rear side as a joint, and an upper end side of the cylindrical contact portion A lid portion that covers the opening, a clamp portion that clamps the periphery of the horizontal insulating portion, and an external connection portion that is fixedly connected to the outer conductor of the coaxial cable are integrally formed from a single conductive metal plate, Surrounding the insulator And a connecting portion that connects the front end of the cylindrical contact portion and the front portion of the lid portion is folded rearward so that the upper end side opening of the cylindrical contact portion covers the lid portion. The clamp portion and the external connection portion that are connected to each other in a straight line are coaxial connectors that are connected to the rear side along the coaxial cable from the lid portion, and an opening preventing recess that opens downward is formed on the lower surface of the horizontal insulating portion. In addition, an opening stopper piece accommodated in the opening prevention recess is integrally protruded rearward from the cylindrical contact portion, and a lower surface of the opening prevention piece accommodated in the opening prevention recess is provided on the horizontal insulating portion. The clamp part which clamps the circumference | surroundings contact | abuts, and the said opening stop piece is prevented from falling out from the said opening stop recessed part .

  The cylindrical contact portion that is bent into a cylindrical shape is formed below the horizontal insulating portion that includes a central connection portion that is connected to the central conductor of the coaxial cable. Since it is housed in the opening-preventing recess, it is positioned around its axis so that the rear of the cylindrical contact portion matches the wiring direction of the coaxial cable, and is connected to the clamp portion and the external connection linearly from the lid portion to the rear. The part is disposed along the coaxial cable.

  When the coaxial cable is inadvertently pulled up, the external contact that is fixed to the coaxial cable is subject to an external force applied to the rear side of the cylindrical contact portion where the seam is formed. Since the opening stopper piece integral with the cylindrical contact portion is in contact with the inner top surface of the opening stopper recess formed in the cylindrical contact portion, the cylindrical contact portion is not pulled up with respect to the insulator and the joint is not opened. As a result, the diameter of the cylindrical contact portion does not increase, and there is no possibility that the fitting force with the mating connector will decrease and come out.

  Since the clamp portion comes into contact with the opening stopper piece accommodated in the opening stopper recess in the direction of coming out of the opening stopper recess, it does not come out of the opening stopper recess.

The coaxial connector according to claim 2 is a cylindrical contact formed by cutting and raising a pair of guide pieces backward from a joint of the cylindrical contact portion above the opening stopper piece and cutting and raising the pair of guide pieces. A horizontal insulating portion continuously provided rearward from the vertical insulating portion is inserted into the notch of the portion, and a pair of guide pieces are disposed along both side surfaces of the horizontal insulating portion.

  When the external contact is assembled to the insulator, the horizontal insulating portion is guided between the pair of guide pieces, and is inserted into the notch of the cylindrical contact portion formed by cutting and raising the pair of guide pieces. Accordingly, the cylindrical contact portion is positioned around its axis so that the rear side of the cylindrical contact portion matches the wiring direction of the coaxial cable.

Coaxial connector according to claim 3, open stopping piece is characterized in that it is formed by bending a joint of the tubular contact portion rearward.

  Since the opening stopper piece is not cut and raised from the cylindrical contact portion, the cylindrical contact portion is not cut out, and the periphery of the center contact portion of the center contact inserted through the vertical insulating portion is shielded from the outside. Moreover, since the periphery of the center contact is surrounded by the cylindrical contact portion, it can be matched with the characteristic impedance of the coaxial cable.

  Since the stopper piece is formed below the pair of guide pieces cut and raised from the joint, when the external contact is assembled to the insulator, it approaches the lower surface of the horizontal insulating portion, and the stopper piece is horizontally insulated. It can be made to be naturally accommodated in the opening stopper recess formed below the portion.

  According to the first aspect of the present invention, even if the external contact is formed from a single conductive metal plate only by pressing, the joint of the cylindrical contact portion does not widen, and the connector is inadvertently pulled out from the mating connector. There is no.

  Also, just by inserting the vertical insulation part into the cylindrical contact part so that the opening stopper piece is accommodated in the opening stopper recess, the clamp part and the external connection part connected linearly rearward from the lid part are coaxial cables. Since it arrange | positions in the corresponding | compatible site | part clamped along, clamping process becomes easy.

Furthermore , the opening stopper piece accommodated in the opening stopper recess does not fall off from the opening stopper recess by the clamp portion that contacts in the direction of coming out of the opening stopper recess. In particular, even if the horizontal insulating portion is thin and the depth of the locking recess is shallow, the locking tab can be reliably positioned in the locking recess.

  As a result, even if the external contact receives an external force from various directions, the opening stopper piece does not come out of the opening stopper recess, and the positional displacement between the insulator and the external contact does not occur, so that the joint of the cylindrical contact portion is widened. There is nothing.

According to the invention of claim 2 , since the pair of guide pieces guide the horizontal insulating portion so as to be inserted through the notch of the cylindrical contact portion formed by cutting and raising the guide piece, horizontal insulation is provided between the guide pieces. By simply sliding the part, the opening stopper piece can be accommodated in the opening stopper recess formed on the lower surface of the horizontal insulating part.

  In addition, since the horizontal insulating portion is inserted through the notch of the cylindrical contact portion, the rotation around its axis is restricted, and in cooperation with the opening stopper piece accommodated in the opening stopper recess, the external contact is made to the insulator. Can be fixed without rattling.

According to the invention of claim 3 , since the notch is not formed by forming the stopper piece in the cylindrical contact portion, the periphery of the center contact portion of the center contact is completely shielded by the external contact, and connected to the mating connector. The impedance of the connecting portion of the coaxial connector can be matched with the characteristic impedance of the coaxial cable.

  Further, the opening stopper piece can be easily accommodated in the opening stopper recess when the external contact is assembled to the insulator.

   Hereinafter, a coaxial connector 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9. 1 is a perspective view of the coaxial connector 1, FIG. 2 is a side view of the coaxial connector 1 to which a coaxial cable 150 is connected, FIG. 3 is an exploded perspective view of the coaxial connector 1, and FIGS. FIG. 6 and FIG. 7 are longitudinal sectional views after the coaxial connector 1 is assembled, FIG. 8 is a diagram showing the insulator 2, and FIG. 9 is a diagram showing the external contact 3. In this specification, in FIG. 2, the configuration of each part will be described with the vertical direction in the figure as the vertical direction in the vertical direction, the left as the front in the horizontal direction, and the right as the rear.

  A coaxial cable 150 for connecting a terminal to the coaxial connector 1 includes an intermediate dielectric 153, an outer conductor 152 made of a braided wire, and an insulating jacket 154 covering the outer periphery around a central conductor 151 wired along the central axis. However, the coaxial connector 1 is disposed between the external contact 3 connected to the external conductor 152, the central contact 4 connected to the central conductor 151, and the external contact 3 and the central contact 4. It is comprised with the insulator 2 which insulates both.

  The center contact 4 is formed by punching a strip-shaped conductive metal plate such as titanium copper alloy by press working and bending it into the shape shown in FIG. 3. The center contact 4 is formed on the rectangular plate body 41 and the center pin 161 of the mating connector 160. The central contact portion 42 that is in elastic contact and the central connection portion 43 that is connected to the central conductor 152 of the coaxial cable 150 are integrally formed.

  The center contact portion 42 is composed of a pair of contact pieces that hang downward from both front sides of the plate body 41. The distance between the lower ends of the pair of contact pieces that are free ends is sandwiched by the center pin 161 from both sides. It is narrower than the outer diameter of the center pin 161 so as to make elastic contact. The center connection portion 43 is connected to the rear end of the plate body 41 and is formed to be curved downward around the longitudinal axis so as to cover the center conductor 151 from above.

  The insulator 2 surrounds and holds the center contact 4, and as shown in FIGS. 3 and 8, a vertical insulating portion 21 formed in a cylindrical shape with the vertical direction as an axis, and an upper surface of the vertical insulating portion 21. A cover plate 22 erected on the front side of the vertical insulating part 21 and a rectangular parallelepiped horizontal insulating part 23 projecting rearward from the upper part of the vertical insulating part 21 are integrally formed from an insulating synthetic resin.

  The vertical insulating portion 21 is provided with an insertion hole 24 through which the center contact portion 42 of the center contact 4 is deformably inserted, and the flange 25 is formed outward along the periphery of the upper end. Projected toward.

  The horizontal insulating portion 23 is provided with a mounting groove 26 for positioning and housing the plate body 41 of the center contact 4 along the front-rear direction on the upper surface thereof. The front of the mounting groove 26 communicates with the upper portion of the insertion hole 24, and the rear of the mounting groove 26 accommodates the central conductor 151 of the coaxial cable 150 together with the plate main body 41, and thus opens to the rear as a stepped portion. The horizontal insulating portion 23 is further provided with ribs extending from the both sides of the bottom surface behind the bottom surface. The pair of ribs open downward between the ribs to form an opening recess 27 along the front-rear direction. Yes.

  The cover plate 22 erected from the vertical insulating portion 21 is bent rearward at the time of assembly, and the insertion hole 24 through which the center contact portion 42 is inserted, the plate body 41, and the mounting groove 26 that accommodates the center connection portion 43. The upper surface is covered, and the center contact 4 is supported in the mounting groove 26 without rattling, and the contact with the external contact 3 that further surrounds the outside of the insulator 2 is prevented. For this reason, the cover plate 22 has a notch for facilitating rearward bending at the base end, and has a contour shape substantially the same as the contour of the opening so as to cover the upper surface side opening of the mounting groove 26. ing.

  The external contact 3 is formed by punching a conductive metal plate made of phosphor bronze or the like by pressing and bending it into the shape shown in FIG. 3. The cylindrical contact portion 31 and the opening on the upper end side of the cylindrical contact portion 31 are formed. A cover portion 32 that covers, a clamp portion 33 that clamps the periphery of the horizontal insulating portion 23, an external connection portion 34 that is fixedly connected to the external conductor 152, and a skin clamp portion 35 that clamps the periphery of the insulating jacket 154. , Are integrally formed.

  The cylindrical contact portion 31 is formed by bending a pair of strips into a cylindrical shape around an axis whose vertical axis is a central axis, and the joint 36 of the pair of strips is the rear side, It is attached around the vertical insulating part 21. The cylindrical contact portion 31 has a cylindrical shape whose inner diameter is slightly larger than the outer diameter of the flange 25 so as to be fitted onto the flange 25 of the vertical insulating portion 21. In addition, the stopper protrusions 31a are cut and raised in the direction of the central axis at three positions 120 degrees apart around the circumference below the upper end side opening of the cylindrical contact portion 31 and the thickness of the flange 25. . At the position where the stopper protrusion 31a protrudes inward from the three positions, the columnar vertical insulating portion 21 can be inserted, but the flange 2 contacts the stopper protrusion 31a.

  Accordingly, when the vertical insulating portion 21 is inserted from the upper end side opening of the cylindrical contact portion 31, the bottom surface of the flange 25 is positioned at a position where it abuts against the stopper projection 31 a, and the cylindrical contact portion 31 corresponds to the protruding length of the flange 25. Are disposed along the periphery of the vertical insulating portion 21 with a gap therebetween. When connecting the coaxial connector 1 to the mating connector 160, the cylindrical contact 162 of the mating connector 160 is inserted into the gap with the vertical insulating portion 21. In addition to the joint 36 described above, the cylindrical contact portion 31 is formed with slits 31b upward from two positions at the lower end, so that the cylindrical contact 162 matches the outer diameter of the cylindrical contact 162. The portion 31 slightly expands in diameter and elastically contacts the side surface of the cylindrical contact 162 to be inserted.

  The pair of strips forming the cylindrical contact portion 31 are partly punched slightly longer along the longitudinal direction of the strip, and are formed by bending into a cylindrical shape as shown in FIG. An opening stopper piece 37 that is bent rearward from the eye 36 and protrudes. As shown in FIG. 3, a pair of strips are cut and raised rearward from the joint 36 to form a pair of guide pieces 38, above the joint 36 where the opening stopper 37 is formed. The lateral width of the notch 39 formed by cutting and raising the pair of guide pieces 38 from the joint 36 is slightly longer than the lateral width of the horizontal insulating portion 23, so that the pair of guide pieces 38 are arranged on both sides of the horizontal insulating portion 23. The horizontal insulating portion 23 arranged along the surface and continuously provided in the horizontal direction from the vertical insulating portion 21 is guided to the notch 39, and the horizontal insulating portion 23 protrudes rearward by the notch 39. Position.

  As shown in FIG. 3, the lid portion 32, the clamp portion 33, the external connection portion 34, and the outer skin clamp portion 35 are connected to the central axis of the cylindrical contact portion 31 from the connecting portion 30 connected to the front end of the cylindrical contact portion 31. When assembling the coaxial connector 1, the connecting portion 30 is bent at a right angle to the rear, and arranged in this order from the front end of the cylindrical contact portion 31 toward the rear. Is done.

  The lid portion 32 has a U-shaped cross section orthogonal to the connecting direction, and covers the upper end side opening of the cylindrical contact portion 31 when the connecting portion 30 is bent rearward. The upper part of the cylindrical contact part 31 is clamped from the outside on both sides of the U-shape so that the 31 does not open carelessly from the joint 36.

  The clamp part 33 connected to the upper part of the cover part 32 is connected to the upper plate part 33a and both sides thereof orthogonal to the connection direction, and a pair of caulking arm parts formed in an L-shaped and reverse L-shaped symmetrical shape. As shown in FIG. 7, when the pair of caulking arm portions 33b and 33b are assembled with each other, the whole is formed into a rectangular tube shape. In a state assembled in a rectangular tube shape, the pair of caulking arm portions 33 b and 33 b abut on the bottom surface of the opening stopper piece 37 protruding rearward from the joint 36.

  The external connection part 34 connected to the upper side of the clamp part 33 and the outer skin clamp part 35 further connected to the upper part are both formed in a U-shape in which a cross section perpendicular to the connection direction opens rearward. When the portion 30 is bent rearward, the U-shaped opening is directed downward above the portion where the outer conductor 152 of the coaxial cable 150 wired from the rear toward the center contact 4 is exposed and above the portion of the insulating jacket 154. Arranged.

  Hereinafter, a process of connecting and assembling the terminal of the coaxial cable 150 to the coaxial connector 1 configured as described above will be described. First, the vertical insulating part 21 of the insulator 2 is inserted from above into the cylindrical contact part 31 of the external contact 3 formed as shown in FIG. At the time of this insertion, the vertical insulating portion 21 is inserted into the cylindrical contact portion 31 so that both side surfaces of the horizontal insulating portion 23 are guided in the vertical direction between the pair of guide pieces 38, and the vertical insulating portion 21 is positioned at a position where the flange 2 abuts against the stopper projection 31a. At this insertion position, the horizontal insulating portion 23 is positioned in a state of being inserted through the notch 39 and rearward by the notch 39. Moreover, since the horizontal insulating part 23 is guided by the space between the pair of guide pieces 38 and is directed rearward, the opening stopper 37 projecting rearward from the joint 36 is prevented from opening on the lower surface side of the horizontal insulating part 23. It is naturally housed in the above insertion process.

  Subsequently, the coaxial cable 150 that connects the terminal to the coaxial connector 1 is wired from the rear to the front. The coaxial cable 150 is stripped in advance from the outer insulation jacket 154 in order until the center conductor 151 is exposed before being assembled to the coaxial connector 1, and the center conductor 151, the intermediate dielectric 153, The outer conductor 152 which is a braided wire is sequentially exposed.

  The central conductor 151 exposed at the front end of the coaxial cable 150 is arranged at a step part lowered by one step at the rear end of the mounting groove 26, and the main body plate 41 is inserted while inserting the central contact part 42 of the central contact 4 into the insertion hole 24. The center contact 4 is incorporated with respect to the insulator 2 by being accommodated in the mounting groove 26. Since the center connection portion 43 of the center contact 4 that curves downward in the assembled state covers the upper portion of the center conductor 151, the center connection portion 43 and the center conductor 151 are pressure-bonded by clamping by the clamp portion 33 described later, Make electrical connections. However, in order to more reliably connect the two, the two may be connected by soldering in this step.

  After the central contact 4 is incorporated, the connecting portion 30 of the external contact 3 is bent backward at a right angle from the state shown in FIG. 3, and as shown in FIG. 4, the lid portion 32, the clamp portion 33, the external connection portion 34, and the skin clamp The portions 35 are sequentially arranged from the front end of the cylindrical contact portion 31 toward the rear. At this time, the cover plate 22 erected from the vertical insulating portion 21 is also pushed backward by the lid portion 32 and bent backward, and covers the upper portion of the mounting groove 26 in which the main body plate 41 and the central connection portion 43 are accommodated.

  When the connecting portion 30 is bent rearward at a right angle, as shown in FIGS. 4 and 5, the clamp portion 33 is disposed behind the horizontal insulating portion 23 and around the intermediate insulator 153, and a pair of caulking arm portions 33b. As shown in FIGS. 6 and 7, the clamp portion 33 is caulked so that the tip ends of the front ends are abutted on the lower surface of the stopper piece 37. By caulking the clamp portion 33, the cover plate 22 is pressed inward (downward) of the mounting groove 26, and the central connection portion 43 and the central conductor 151 are connected. Further, the opening stopper piece 37 accommodated in the opening stopper recess 27 is prevented from coming off from the opening stopper recess 27 because the lower surface of the opening stopper piece 37 is covered by the crimping arm portion 33b.

  Subsequently, the external connection portion 34 arranged at the exposed position of the external conductor 152 is clamped by crimping around the external conductor 152, and the external contact 3 is connected to the external conductor 152. Similarly, the outer skin clamp portion 35 disposed at the portion of the insulation jacket 154 is clamped by crimping around the insulation jacket 154, and the assembly of the coaxial connector 1 is completed.

  In the assembled coaxial connector 1, the clamp part 33, the external connection part 34, and the outer skin clamp part 35 of the external contact 3 are crimped to the intermediate insulator 153, the external conductor 152, and the insulation jacket 154 of the coaxial cable 150, respectively. The end of the coaxial cable 150 is firmly fixed to the contact 3. Further, the insulator 2 is fixed to the external contact 3 by the horizontal insulating portion 23 being crimped to the clamp portion 33, and the vertical insulating portion 21 is inserted into the notch 39 so that the horizontal insulating portion 23 is inserted into the axis of the vertical line. In addition to being positioned around, it is sandwiched between the stopper projection 31a and the lid portion 32 and is supported in the cylindrical contact portion 31 without rattling.

  As shown in FIG. 1, the coaxial connector 1 configured in this way is connected to a terminal of a coaxial cable 150 wired from the horizontal direction, and is fitted and connected to a mating connector 160 whose connection direction is the vertical direction. As described above, the connection with the mating connector 160 is performed by inserting the cylindrical contact 162 of the mating connector 160 into the gap between the cylindrical contact portion 31 and the vertical insulating portion 21 so that the cylindrical contact portion 31 and the cylindrical contact 162 are connected. Simultaneously with the connection, the center pin 161 and the center contact portion 42 are connected.

  Even if the coaxial cable 150 is inadvertently pushed upward in the figure while being connected to the mating connector 160, it acts on the external contact 3 in a direction to open the joint 36 of the cylindrical contact portion 31 with respect to the vertical insulating portion 21. The external force is regulated by a stopper piece 37, which is a part of the external contact 3 in the vicinity of the joint 36, contacting the inner top surface of the stopper recess 27 of the insulator 2. Therefore, the cylindrical contact portion 31 does not come out of the mating connector 160 inadvertently from the state in which it is elastically contacted to the outside of the cylindrical contact 162 and the inner diameter is increased and the fitting force is not reduced.

  In the above-described embodiment, the lower surface of the locking stopper 37 accommodated in the locking stopper 27 is covered with a part of the clamp portion 33 to prevent the locking stopper 27 from coming off. It is sufficient that 37 abuts on the lower surface of the horizontal insulating portion 23, and it is not always necessary to surround the clamp portion 33.

  Further, the opening stopper piece 37 is formed by bending further backward from the joint 36 so that the cylindrical contact portion 31 is not cut out at the formation position. For example, like the pair of guide pieces 38. Alternatively, a part of the cylindrical contact portion 31 may be cut and raised rearward. Furthermore, although the pair of opening stopper pieces 37 is formed from both sides of the joint 36, only one of them may be provided.

  Further, the guide piece 38 facilitates accommodation of the opening stopper piece 37 in the opening stopper recess 27 during assembly, but it is not always necessary to provide the guide piece 38.

  The present invention is suitable for a coaxial connector that is connected to a terminal of a coaxial cable and connected to a mating connector in a direction orthogonal to the wiring direction of the coaxial cable.

It is a perspective view of the other party connector 160 which connects the coaxial connector 1 and the coaxial connector 1 which concern on one embodiment of this invention. 2 is a side view of the coaxial connector 1 to which a coaxial cable 150 is connected. FIG. 1 is an exploded perspective view of a coaxial connector 1. FIG. FIG. 4 is a longitudinal sectional view cut along the wiring direction of the coaxial cable 150 showing the assembly process of the coaxial connector 1. FIG. 4 is a longitudinal sectional view cut along the longitudinal direction of a clamp portion 33 showing an assembly process of the coaxial connector 1. 2 is a longitudinal sectional view of the assembled coaxial connector 1 cut along the wiring direction of the coaxial cable 150. FIG. FIG. 4 is a longitudinal sectional view of the assembled coaxial connector 1 cut along the longitudinal direction of a clamp portion 33. (A) of the insulator 2 is a side view, (b) is a bottom view, and (c) is a longitudinal sectional view. (A) of the external contact 3 is a side view, (b) is a bottom view, and (c) is a rear view. FIG. 6 is a longitudinal sectional view showing an assembly process of a conventional coaxial connector 100. It is a longitudinal cross-sectional view of another conventional coaxial connector 120. 3 is a longitudinal sectional view of an inner case 121 of the coaxial connector 120. FIG. 4 is a side view of an outer case 122 of the coaxial connector 120. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coaxial connector 2 Insulator 21 Vertical insulating part 23 Horizontal insulating part 24 Insertion hole 27 Opening recessed part 3 External contact 30 Connection part 31 Cylindrical contact part 32 Lid part 33 Clamp part 34 External connection part 36 Seam 37 Opening stop piece 38 Guide piece 4 Center contact 42 Center contact portion 43 Center connection portion 150 Coaxial cable 151 Center conductor 152 External conductor 160 Mating connector

Claims (3)

A center contact portion formed toward the lower side in the vertical direction connected to the mating connector, and a center connection portion connected to the center conductor of the coaxial cable routed from the rear in the horizontal direction toward the upper side of the center contact portion. Having a central contact;
An insulator having a vertical insulating portion in which an insertion hole for inserting the central contact portion is formed in a vertical direction, and a horizontal insulating portion that accommodates the central connection portion, and surrounds and holds the central contact;
With the rear side as a joint, a cylindrical contact portion that is bent into a cylindrical shape along the periphery of the vertical insulating portion, a lid that covers the upper end side opening of the cylindrical contact portion, and a clamp around the horizontal insulating portion And an external contact portion that is integrally formed from a single conductive metal plate and that surrounds and holds the insulator. ,
A connecting portion that connects the upper end front of the cylindrical contact portion and the front of the lid portion is bent backward so that the upper end side opening of the cylindrical contact portion covers the lid portion, The coaxial part connected to the clamp part and the external connection part connected to the rear along the coaxial cable from the lid part,
On the lower surface of the horizontal insulating portion, a recess for opening is opened downward, and
An opening stopper piece accommodated in the opening stopper recess is integrally protruded rearward from the cylindrical contact portion,
The clamp portion that clamps the periphery of the horizontal insulating portion is in contact with the lower surface of the opening stopper piece accommodated in the opening stopper recess, and the opening stopper piece is prevented from coming off from the opening stopper recess. Coaxial connector. From the joint of the cylindrical contact portion above the opening stopper piece, a pair of guide pieces are cut and raised backward,
The horizontal insulating portion connected to the rear from the vertical insulating portion is inserted into a notch of the cylindrical contact portion formed by cutting and raising the pair of guide pieces, and on both side surfaces of the horizontal insulating portion. The coaxial connector according to claim 1, wherein a pair of the guide pieces are disposed along the coaxial connector. The coaxial connector according to claim 1 , wherein the opening stopper piece is formed by bending backward from a joint of the cylindrical contact portion.

Images