JP4386374B2 - L-type coaxial connector - Google Patents

Description

  The present invention relates to an L-shaped coaxial connector.

  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. 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, and the upper surface 55B is flat. The contact portion 53 of the terminal 51 is accommodated in the hollow hole portion 55A, and the connection portion 52 is placed on the upper surface 55B. 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 in the same direction as the inner lid portion 56 of the insulator, but is bent so as to push the inner 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. Furthermore, since the tip of the center conductor C4 is positioned by the rising wall portion 52B as described above, the connection portion 52 cannot be brought to the position of the contact portion 53 in the radial direction of the main body portion 55. This hinders miniaturization of the connector in the longitudinal direction of the cable C.

  In view of such circumstances, an object of the present invention is to provide an L-type coaxial connector that makes a cable solder at a terminal firm and stable, and realizes downsizing of the connector in the longitudinal direction of the cable.

  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, wherein the terminal has a cable extending direction at the connection portion and an insertion direction to the mating connector substantially perpendicular, and the insulator is a contact portion of the terminal. A main body portion in which a hollow portion is formed and an inner lid portion that forms a cable housing portion between the upper surface of the main body portion and presses a connection portion of a terminal disposed on the upper surface of the main body portion. The outer conductor has a cylindrical portion that accommodates the main body portion of the insulator and an outer lid portion that applies a pressing force to the inner lid portion, and between the cylindrical portion and the main body portion of the insulator. A cylindrical annular space for receiving and contacting the outer conductor of the mating connector Forms.

In such an L-shaped coaxial connector, in the present invention, the insulator has a shoulder portion formed with a support surface for supporting the cable that can extend radially outward from the main body portion, and the upper surface of the main body portion of the insulator is the shoulder. The inner lid portion and the shoulder portion are vertically positioned in different ranges in the longitudinal direction of the cable and press the cable from above and below .

According to the connector of the present invention configured as described above, the shoulder portion of the insulator and the inner lid portion are in different ranges in the longitudinal direction of the cable, and the upper surface of the main body portion of the insulator is below the support surface of the shoulder portion. Since the cable is placed in the submerged position, the cable is bent and deformed so that the cable is sheared in the diametrical direction and compressed by using the flexibility and elastic diameter reduction of the cable. The height range can be accommodated within the bending deformation range of the cable, and the cable can be held strongly, leading to a reduction in the height of the connector .

In the present invention, if a gap allowing deformation of the cable is formed between the main body portion and the shoulder portion of the insulator, the above-described bending and diameter reduction of the cable can be easily performed.

  In the present invention, the terminal has a flat portion for solder connection of the central conductor of the cable, and the cross-section of the connection portion on the surface including the axis of the cable is substantially U-shaped, and the axis of the flat portion A wall is formed by suspending at both ends in the direction, a slit-shaped groove for insertion of the center conductor is formed on one wall, and the other wall is positioned opposite to the tip of the center conductor. It can be made into a form. 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 the both wall parts.

In the present invention, as described above, since the annular space communicates with the cable housing portion and the cable is exposed in the annular space, the tip of the external conductor of the mating connector can be inserted to the vicinity of the cable housing portion. Therefore, the height of the outer conductor necessary for stable mating (effective mating length), the sum of the height of the cable and the outer lid is the height of the connector, so the height of the connector Can be reduced. Also, by utilizing the flexibility and elastic diameter reduction of the cable, the shoulder part and the inner lid part are compressed and held so that the cable is sheared in the diametrical direction in different ranges in the longitudinal direction of the cable. it the height becomes housed is possible within the deformation range deflection of can be reduced, can be strongly retained to the cable.

  Hereinafter, embodiments of the present invention will be described 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 upward at both end portions 12B, and the contact portion 13 has a tongue-like shape from the side edge between the wall portions 15 and 16. Hanging 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 the outer side surface 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 main body portion 21 of the insulator 20 so as to penetrate vertically, and upper surfaces 25 on both end sides thereof are connected portions of the terminal 10. 12 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.

  Guide walls 28 are erected on both sides of the shoulder portion 22 for guiding the inner lid portion 23 (described later) when it is bent. Thus, the side wall portion 27 and the guide wall 28 form a standing wall rising from the upper surface 25 on the inner surface thereof. 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. At that time, the inner lid portion 23 is within the range of the upper surface 25 when viewed from above, and from the side. When viewed, the dielectric C3 is compressed so that at least a portion of the inner lid portion is within the height range of the standing wall.

  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 its 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. Further, 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) After that, as shown in FIG. 2, the outer lid portion 32 of the outer conductor 30 is bent at a substantially right angle at its base portion 32A, and the outer lid portion 32 presses the inner lid portion 23 of the insulator 20 to press it. Is bent in the same way. Then, the gripping portions 32B and 32C of the outer conductor 30 are bent and deformed in 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 bends and is deformed by compression. As a result, the sum of the height dimensions of the dielectric C3 of the cable and the inner lid portion 23 of the insulator 20 in the range of the cylindrical portion 31 of the outer conductor 30 in the radial direction is the shoulder portion 22 and the shoulder portion 22. The sum of the height dimensions of the upper dielectric C3 is the same at the same position in the height direction. 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 between the main body 21 and the shoulder 22 in the insulator 20, so that 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. 3, and the description thereof is omitted by giving the same reference numerals to the respective parts.

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 Terminals 22 Shoulders 12 Connections 22A Clearances 12A Flats 23 Middle Covers 13 Contact Ports 25 Upper Surfaces 15, 16 Walls 30 External Conductors 15A Grooves 31 Cylindrical Parts 20 Insulators 32 Outer Covers 21 Main Units

Claims (3)

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 The terminal has a main body portion in which the extending direction of the cable at the connection portion and the insertion direction to the mating connector are substantially perpendicular to each other, and the insulator is a hollow portion that accommodates the connecting portion of the terminal. And an inner lid portion that forms a cable housing portion between the main body portion and the upper surface of the main body portion and presses a connection portion of a terminal disposed on the upper surface of the main body portion. A cylindrical portion that accommodates the outer lid portion and an outer lid portion that applies a pressing force to the inner lid portion, and receives and contacts the external conductor of the mating connector between the cylindrical portion and the main body portion of the insulator. In an L-shaped coaxial connector forming a cylindrical annular space for connection Te, the insulator has a shoulder which the support surface is formed for the cable support put out extending radially outwardly from the body portion, death below the supporting surface of the top shoulder portion of the main body portion of the insulator The L-shaped coaxial connector is characterized in that the inner lid portion and the shoulder portion are positioned vertically in different ranges in the longitudinal direction of the cable and press the cable from above and below . The L-shaped coaxial connector according to claim 1 , wherein the insulator has a gap that allows deformation of the cable between the main body and the shoulder.   The terminal has a substantially U-shaped cross section in the plane including the cable axis, and has flat portions for solder connection of the central conductor of the cable, at both ends of the flat portion in the axial direction. A wall portion is formed by suspending, a slit-like groove portion for insertion of the center conductor is formed on one wall portion, and the other wall portion is located facing the tip of the center conductor. The L-shaped coaxial connector according to claim 1.

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