JP3875246B2 - Terminal for L-type coaxial connector and connector having the same - Google Patents

Description

  The present invention relates to a terminal for an L-shaped coaxial connector and a connector having the terminal.

  Such a connector is known as shown in FIG. 3 of the accompanying drawings. In the connector 50 shown in FIG. 3, the coaxial cable C has a shield wire C2, a dielectric C3, and a center conductor C4 in this order in the outer sheath C1. The center conductor C4 is soldered to the terminal 51. The terminal 51 is formed by bending a metal piece, and has a connection part 52 and a contact part 53. The connecting portion 52 has a peak portion 52A near one end and a rising wall portion 52B near the other end, and a slit 52C is formed in the rising wall portion 52B, and the central conductor C4 is received at a predetermined position by the slit 52C. ing. At that time, the rising wall 52B positions the tip of the central conductor C4. The peak portion 52A and the rising wall portion 52B also have a function of preventing the flow of solder to both ends when the central conductor C4 is soldered to the connection portion 52 in the middle thereof. Further, the contact portion 53 has a tongue-like shape having a plane parallel to the paper surface at two positions spaced in a direction perpendicular to the paper surface from the position of the peak portion 52A, and is integrally formed with the connection portion 52. Is formed.

  The terminal 51 is held by an insulator 54. This insulator has a cylindrical main body portion 55 and an inner lid portion 56. The main body portion 55 has a hollow hole portion 55A formed at the center, the upper surface 55B is flat, the contact portion 53 of the terminal 51 is accommodated in the hollow hole portion 55A, and the upper surface 55B is placed on the connection portion 52. Has been. A shoulder portion 57 is provided so as to extend from the upper surface position of the main body portion 55 to the outside of the radius, and supports the portion of the dielectric C3 of the cable C. Further, from the upper surface position of the main body portion 55, an inner lid portion 56 extends in a peripheral portion on the opposite side to the outer side of the shoulder portion 57, and the inner lid portion 56 is an outer conductor described below. The terminal 52 is bent together with the outer lid portion to cover the terminal 52 as shown in FIG. 3, and the distal end portion thereof is located in parallel with the shoulder portion 57.

  The outer conductor 58 made of a metal plate has a cylindrical portion 59 and an outer lid portion 60. The cylindrical part 59 accommodates the main body part 55 of the insulator 54 and forms a cylindrical annular space 61 between them. The outer lid portion 60 extends from the tubular portion 59 like the middle lid portion 56 of the insulator, but is bent so as to push the middle lid portion 56 as shown in FIG. The outer lid portion 60 is rounded so as to surround the cable C at the tip thereof, and holds the cable.

  On the other hand, the mating connector 70 has a terminal 71, an insulator 72, and an external conductor 73. The terminal 71 has a contact portion 71A that is partially drawn and protruded in a shaft shape, and a connection portion 71B that extends from the bottom portion in a plate shape. The outer conductor 73 has a cylindrical portion 73A.

Thus, the connector 50 is coupled to the tubular portion 59 while receiving the tubular portion 73A of the mating connector 70 in the annular space 61, and simultaneously the terminals 53 and 71 are fitted together.
Not found

  In such a connector of FIG. 3, the terminal 51 is pressed and held by the middle lid portion 56 of the insulator at the peak portion 52A. However, the mountain portion 52A has a round top and is only one place. Accordingly, the holding force by the inner lid portion 56 is not sufficient and is not stable, and when an external force is applied via the cable connected to the terminal 51 by soldering, a large force is applied to the solder portion, leading to solder failure.

  In view of such circumstances, an object of the present invention is to provide a terminal for a coaxial connector that can firmly and stably solder a cable at a terminal, and a connector having the terminal.

  An L-shaped coaxial connector according to the present invention supports a terminal having a connection portion where a central conductor of a coaxial cable is connected, a contact portion connected to a corresponding contact portion of a mating connector, and surrounding the terminal. An insulator and an outer conductor for housing the insulator are provided.

In the terminal of the coaxial connector, the extending direction of the cable at the connection portion and the inserting direction to the mating connector are substantially perpendicular. In addition, the insulator includes a main body portion formed with a hollow portion that accommodates the contact portion of the terminal, and an inner lid portion that is bent so as to press the connection portion of the terminal disposed on the upper surface of the main body portion against the upper surface. have. The outer conductor includes a tubular portion for accommodating the main body portion of the insulator, a cable tip with providing a pressing force for bending to the inner-lid portion during formed extending from the tubular portion bent And holding an outer lid portion.

An annular space is formed between the tubular portion and the main body portion of the insulator for receiving and connecting the outer conductor of the mating connector.

In the present invention, the terminal includes a flat portion for placing a central conductor exposed at an end portion of the cable and soldering, and a contact portion depending from both side edges of the flat portion on both sides of the cable. The flat portion has a wall portion that hangs upward at both ends in the longitudinal direction of the cable, and a slit-like groove portion for insertion of the central conductor is formed on one wall portion so as to open upward. wall portion is located opposite to the tip of the center conductor, the wall portion of the above both ends of the flat portion projects beyond the range of the contact portion in the cable longitudinal direction, outside the width of the groove center conductor It is set to be larger than the diameter and smaller than the outer diameter of the dielectric covering the central conductor, and the one and other wall portions of the terminal are high when pressed at the upper end when the inner lid portion is bent. It is characterized by that. According to such a terminal, it is easy to manufacture the terminal, and at the time of soldering, it is possible to prevent the solder from flowing out to the other part by both wall parts. Also, since the one and other wall portions of the terminal are at a height that is pressed and supported by the upper ends of the wall portions when the inner lid portion of the insulator is bent, the terminal is axially It is firmly held by two walls and stabilized.

As described above, according to the present invention, the terminal is prevented from flowing out of the solder due to the presence of both wall portions, the coaxial cable is positioned in the longitudinal direction of the cable by one wall portion, and both the wall portions are bent when the insulator is bent. A stable and firm terminal support can be obtained by being pressed by the inner lid.

  Embodiments of the present invention will be described below with reference to FIGS. 1 and 2 of the accompanying drawings.

  FIG. 1 is a perspective view showing each member in a separated state before assembly of the L-shaped coaxial connector of the present embodiment.

  In FIG. 1, the connector has a terminal 10, an insulator 20, and an outer conductor 30.

The terminals 10 are made by processing a band-shaped metal material, and a plurality of terminals 10 are provided at fixed intervals with respect to the carrier 11. Each terminal 10 has a connection part 12 and a contact part 13. After the central conductor C4 of the cable C is soldered to the flat part 12A of the connection part 12, the terminal 10 is separated from the carrier 11 by the separation part 14. And become independent. The connection portion 12 of the terminal 10 has wall portions 15 and 16 erected at both end portions 12B, and the contact portion 13 has a tongue shape from the side edge between the wall portions 15 and 16. It hangs down. One wall portion 15 is formed with a groove portion 15A for receiving the central conductor C4. The wall portion 15 forms the groove portion 15A, and its outer surface also has a function of contacting the end surface of the dielectric C3 of the cable. The other wall portion 16 is formed by a portion cut and raised from one end side of the window portion 17A formed in the portion 17 that connects the carrier 11 and the terminal 10, and faces the tip of the center conductor C4. Both contact portions 13 are curved inward at the lower portion to form a throat portion 13A.

  The insulator 20 is made by molding an insulating material, and includes a substantially cylindrical main body portion 21, a shoulder portion 22 that extends outward from the upper position of the main body portion 21, and a shoulder. It has the part 22 and the inner cover part 23 which is located on the opposite side in the outer radius and extends upward.

  A hollow portion 24 that accommodates the tongue-like contact portion 13 of the terminal 10 is formed in the body portion 21 of the insulator 20 so as to penetrate vertically, and edges of the upper surface 25 on both ends thereof are formed on the terminal 10. The surface on which the connecting portion 12 is placed is formed. A flange portion 26 is formed on the upper peripheral edge of the main body portion 21, and side wall portions 27 are provided on both side positions of the hollow portion 24. The side wall portion 27 is not particularly essential.

As a preferred form, the shoulder portion 22 is provided with guide walls 28 on both sides, and this is for guiding the inner lid portion 23 described later when it is bent. It is not a thing. In the present embodiment, a gap 22 </ b> A is formed between the shoulder portion 22 and the main body portion 21. The guide wall 28, the side wall 27, and other main body portions protruding upward from the upper surface 25 are all positioned lower than the cable dielectric C3 disposed on the upper surface 25. The height dimension is determined as shown.

  The inner lid portion 23 is bent so as to be parallel to the upper surface 25 later, but at this time, the inner lid portion 23 is dimensioned to be within the range of the upper surface 25.

  The outer conductor 30 is made by processing a metal plate, and has a cylindrical portion 31 and an outer lid portion 32.

The cylindrical portion 31 has a diameter that accommodates the main body portion 21 of the insulator 20 in a concentric position and forms an annular space 2 that receives the cylindrical outer conductor of the mating connector between the main body portion 21 and the main body portion 21. ing. The cylindrical portion 31 is provided with an surrounding portion 33 that extends laterally and surrounds the shoulder portion 22 (and the guide wall 28) of the insulator 20 from the side. The outer lid portion 32 is a constricted base portion 32A, which is later bent in the direction of the cylindrical portion 31. At this time, the flat lid portion 32D that covers the range of the cylindrical portion 31 and outside the range, the cable C It has grip portions 32C and 32B that are plastically deformed so as to grip the outer skin C1 portion and the shield wire C2 portion. In addition, a protruding piece 32E is provided between the gripping portions 32C and 32B and the flat lid portion 32D so as to wrap around the shoulder portion 22 and bend at the groove portion 32F to support and reinforce the shoulder portion 22. It has been.

  Since the annular space 2 communicates with the cable housing portion and the dielectric C3 of the cable is exposed in the annular space 2, the tip of the outer conductor of the mating connector can be inserted to the vicinity of the cable housing portion, The sum of the height of the outer conductor (effective fitting length) necessary for stable fitting, the height of the dielectric C3, and the height of the outer lid portion 32 is the height of the connector. The annular space 2 must be longer than the effective fitting length.

The connector of this embodiment having such a configuration is assembled and used in the following manner.
(1) The central conductor C4 of the cable C as shown in FIG. 1 is accommodated in the groove 15A of the terminal 10 and arranged on the flat portion 12A of the connection portion 12, and soldered here. At this time, the solder does not flow from here through the wall portions 15 and 16 at both ends and adhere to the inside of the contact portion 13.
(2) Next, the terminal 10 and the cable C connected thereto are arranged on the insulator 20. At that time, the contact portion 13 of the terminal 10 is accommodated in the hollow portion 24 of the insulator 20, both end portions 12B of the connection portion 12 are supported by the upper surface 25 of the insulator 20, and the portion of the dielectric C3 of the cable C is It is supported by the shoulder 22 of the insulator 20.
(3) Thereafter, as shown in FIG. 2, the outer lid portion 32 of the outer conductor 30 is bent at a substantially right angle at the base portion 32A, and the outer lid portion 32 presses the inner lid portion 23 of the insulator 20 to press this. Is bent in the same way. Then, the gripping portions 32B and 32C of the outer conductor 30 are bent and deformed into a cylindrical shape so that the shield wire C2 and the outer sheath C1 of the cable are gripped. By doing so, the inner lid portion 23 and the shoulder portion 22 of the insulator 20 are located in different ranges in the longitudinal direction of the cable C as seen in FIG. 2, so that the portion of the dielectric C3 is pressed from above and below. It is compressed and deformed together with the bending deformation. As a result, the dielectric C3 of the cable and the hollow portion 24 of the insulator 20 in the range of the cylindrical portion 31 of the outer conductor 30 in the radial direction are in the same position as the shoulder 22 and the dielectric C3 in the height direction. It becomes the same size. That is, the height dimension is smaller by the thickness (height in FIG. 2) dimension of the inner lid portion than the conventional one of FIG. Further, when the cable is deformed, a gap 22A is formed in the insulator 20 between the main body portion 21 and the shoulder portion 22. Therefore, a part of the cable escapes here and is easily deformed. Further, as is apparent from FIG. 2, the inner lid portion 23 supports the two wall portions 15 and 16 of the terminal 10 by pressing them at their upper ends.
(4) The connector 1 assembled in this way is coupled to the mating connector 70 as shown in FIG. The mating connector 70 is the same as the conventional connector shown in FIG.

It is a perspective view which shows each member of the connector of one Embodiment of this invention in the isolation | separation state before an assembly. It is sectional drawing after the assembly of the connector of FIG. It is sectional drawing of the conventional connector.

Explanation of symbols

10 Terminal 12 Connection part 12A Flat part 13 Contact part 15, 16 Wall part
15A Groove
20 Insulator
21 Body 22 Shoulder 22A Gap 23 Middle lid
2 5 Upper surface 30 External conductor 31 Cylindrical part 32 Outer cover part

Claims (2)

In the terminal for connecting the central conductor exposed at the end of the coaxial cable, a flat part for placing the central conductor of the cable and soldering, and both sides of the cable, both sides of the flat part It has a contact part that hangs down from the edge, and a wall part that hangs upward at both ends of the cable in the longitudinal direction of the flat part, and a slit-like groove part for insertion of the central conductor opens upward on one wall part was formed, the other wall portion is located opposite to the tip of the center conductor, the wall portion of the above both ends of the flat portion projects beyond the range of the contact portion in the cable longitudinal direction, the both ends The wall portion is formed at the same height, and the width of the groove is set to be larger than the outer diameter of the center conductor and smaller than the outer diameter of the dielectric covering the center conductor. A terminal having a contact portion connected to a corresponding contact portion of the mating connector and a connection portion to which the central conductor of the coaxial cable is connected; an insulator supporting the terminal so as to surround the terminal; and an external housing the insulator A conductor, and the terminal is substantially perpendicular to the direction in which the cable extends in the connection portion and the direction in which the connector is inserted into the mating connector, and the insulator has a main body formed with a hollow portion for accommodating the contact portion of the terminal, and The main body portion has a middle lid portion that is bent on the upper surface of the terminal and forms a cable housing portion in the middle of the upper surface in the height direction, and the outer conductor is a cylindrical shape that houses the main body portion of the insulator. It includes a part, an outer lid portion to hold the cable at a tip portion with providing a pressing force for bending to the inner-lid portion during formed extending from the tubular portion bent, cylindrical portion and said accept the outer conductor of the mating connector between the body portion of the insulator In the L-shaped coaxial connector forming a cylindrical annular space for tactile connection, the terminal has a flat part for placing a central conductor exposed at the end of the cable and soldering, and the cable. On the other hand, it has a contact part that hangs down from both side edges of the flat part on both sides, and a wall part that hangs upward at both ends of the flat part in the longitudinal direction of the cable. And the other wall portion is positioned to face the tip of the central conductor, and the wall portions at both ends of the flat portion are the contact portions in the cable longitudinal direction. also protrudes from the range of the width of the groove is greater than the outer diameter of the center conductor, it is smaller than the outer diameter of the dielectric covering the center conductor, one and the other wall portion of the terminal, When the above-mentioned inner lid is bent, the height is pressed at the upper end. L-type coaxial connector, characterized in that there.

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