JP6677351B2 - Board mounted coaxial connector - Google Patents

Description

  The present invention relates to a board-mounted coaxial connector and a method for manufacturing the same.

  2. Description of the Related Art Conventionally, a board-mounted coaxial connector used in a state of being mounted on a board is known (for example, see Patent Document 1).

  The board-mounted coaxial connector of Patent Literature 1 has an internal terminal having a center conductor as a contact pin, an external terminal having a cylindrical outer conductor disposed around the center conductor, and a connector between the internal terminal and the external terminal. An insulating member to be arranged. The coaxial connector is mounted on a board via internal terminals and external terminals. When connecting the coaxial connector mounted on the board to the mating connector, the center conductor of the internal terminal and the outer conductor of the external terminal are fitted to corresponding terminals of the mating connector.

  In such a configuration, the center conductor of the internal terminal has a cylindrical shape formed by drawing, and a flange portion (diameter enlarged portion) that expands in the radial direction is formed at the base end. By disposing the insulating member so as to surround the flange, the flange functions as a stopper for the internal terminal.

Patent No. 3161281

  2. Description of the Related Art In recent years, multilayer boards on which coaxial connectors are mounted have been developed. A layer including a plurality of electrodes (a ground electrode and a signal electrode) is provided inside such a substrate. As the number of layers of the substrate increases, the distance between the layers formed by the plurality of electrodes and the distance between the terminals of the coaxial connector and the layers formed by the electrodes become shorter. In particular, when the distance between the terminal of the coaxial connector and the layer formed by the electrode becomes short, there is a concern that electrical capacitive coupling occurs between the two and that the electrical characteristics of the mounting board deteriorate. If the design of the board cannot be changed, it is desirable to take measures on the coaxial connector side so that the deterioration of the electrical characteristics can be suppressed even when the board is mounted on the board.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-described problems and to provide a board-mounted coaxial connector capable of suppressing deterioration of electrical characteristics and a method of manufacturing the same.

  In order to achieve the above object, a board-mounted coaxial connector of the present invention includes an internal terminal, an external terminal, and an insulating member disposed between the internal terminal and the external terminal. A board-mounted coaxial connector mounted on a board via the external terminal, wherein the internal terminal includes a first terminal protruding to be inserted into a terminal of a mating connector, and a base of the first terminal. A second terminal portion extending from the end portion in a direction intersecting the direction in which the first terminal portion protrudes, and a second terminal portion mounted on a substrate, wherein the first terminal portion extends cylindrically from the base end portion; And an outer diameter of the proximal end portion is set to be equal to or less than an outer diameter of the cylindrical portion excluding the proximal end portion.

  Further, the method of manufacturing a board-mounted coaxial connector of the present invention includes an internal terminal, an external terminal, and an insulating member disposed between the internal terminal and the external terminal, wherein the internal terminal and the external terminal are provided. A method of manufacturing a board-mounted coaxial connector mounted on a board through a method, comprising: preparing the internal terminal; preparing the external terminal; and spacing the internal terminal and the external terminal from each other. Holding the internal terminal and insert molding the insulating member between the internal terminal and the external terminal. The step of preparing the internal terminal includes the step of preparing one plate-shaped member. A first terminal portion extending in a plate shape in a first direction, and a first terminal portion branched from a side of a central portion of the first terminal portion and formed in a plate shape in a second direction orthogonal to the first direction. Extending second end Preparing the one plate-shaped member having a first portion and a first portion on one side and a second portion on the other side with respect to a center portion of the first terminal portion in the first direction. And bending the first terminal portion or the second terminal portion at a connecting portion between the first terminal portion and the second terminal portion. ,including.

  ADVANTAGE OF THE INVENTION According to the board-mounted type coaxial connector of this invention, and its manufacturing method, deterioration of an electrical characteristic can be suppressed.

FIG. 2 is a perspective view showing the coaxial connector of the first embodiment (a diagram in which an insulating member is indicated by a solid line). FIG. 2 is a perspective view showing the coaxial connector of the first embodiment (a view in which an insulating member is indicated by a dotted line). Image of coaxial connector mounted on board Side view of internal terminal Rear view of internal terminals A perspective view for explaining an example of a method of forming an internal terminal. A perspective view for explaining an example of a method of forming an internal terminal. A perspective view for explaining an example of a method of forming an internal terminal. Perspective view showing an internal terminal according to a first modification. Perspective view showing an internal terminal according to a first modification. Perspective view showing an internal terminal according to a first modification. Perspective view showing an internal terminal according to Modification Example 2. Perspective view showing an internal terminal according to Modification Example 3. Side view showing internal terminal according to Modification 3 Perspective view showing internal terminals used in the coaxial connector of the second embodiment. FIG. 9 is a perspective view for explaining an example of a method of forming the internal terminals shown in FIG. FIG. 9 is a perspective view for explaining an example of a method of forming the internal terminals shown in FIG. FIG. 9 is a perspective view for explaining an example of a method of forming the internal terminals shown in FIG. FIG. 9 is a perspective view for explaining an example of a method of forming the internal terminals shown in FIG.

  According to the first aspect of the present invention, an internal terminal, an external terminal, and an insulating member disposed between the internal terminal and the external terminal are provided, and a substrate is provided via the internal terminal and the external terminal. A board-mounted coaxial connector to be mounted, wherein the internal terminal includes a first terminal protruding so as to be inserted into a terminal of a mating connector, and a first terminal protruding from a base end of the first terminal. A second terminal portion extending in a direction intersecting the projecting direction of the first terminal portion, the second terminal portion being mounted on a substrate, the first terminal portion having a tubular portion extending in a tubular shape from the proximal end portion, An outer diameter of the portion is set to be equal to or less than an outer diameter of the cylindrical portion excluding the base end portion.

  According to such a configuration, by configuring the base end portion of the first terminal portion so as not to spread, the first terminal portion can be compared with a case where the base end portion is expanded in the radial direction and the flange portion is provided. The facing area facing the substrate is reduced. Thereby, the capacitive coupling between the first terminal portion and the electrode in the inner layer of the substrate can be suppressed, and deterioration of the electrical characteristics of the board-mounted coaxial connector can be suppressed.

  According to a second aspect of the present invention, the outer diameter of the base end of the first terminal portion is set to the same length as the outer diameter of the cylindrical portion excluding the base end. The present invention provides a board-mounted coaxial connector as described above. According to such a configuration, the first terminal portion can be easily formed by forming the cylindrical portion of the first terminal portion into a straight shape.

  According to the third aspect of the present invention, the first terminal portion is formed of a single plate-shaped member integrated with the second terminal portion, and the tubular portion of the first terminal portion is A first plate-shaped portion extending to one side in the circumferential direction; and a second plate-shaped portion extending from the first portion to the other side in the circumferential direction. The first portion and the second portion The board-mounted coaxial connector according to the first aspect or the second aspect, wherein the distal ends of the portions are arranged to face each other. According to such a configuration, the internal terminal can be easily formed by forming the first terminal portion and the second terminal portion with one plate-shaped member. Further, by forming the tubular portion of the first terminal portion separately into the first portion and the second portion, the first portion and the second portion are formed simply by bending the plate-like member. And the first terminal portion can be easily formed.

  According to a fourth aspect of the present invention, the cylindrical portion of the first terminal portion has a through hole on a side surface, and the insulating member is disposed so as to pass through the through hole. A board-mounted coaxial connector according to any one of three aspects is provided. According to such a configuration, by disposing the insulating member in the through hole, the first terminal portion can be firmly held, and the strength of the first terminal portion can be reinforced.

  According to a fifth aspect of the present invention, an internal terminal, an external terminal, and an insulating member disposed between the internal terminal and the external terminal are provided, and a substrate is provided via the internal terminal and the external terminal. A method of manufacturing a board-mounted coaxial connector to be mounted, the method comprising: preparing an internal terminal; preparing an external terminal; and holding the internal terminal and the external terminal at an interval from each other. And the step of insert-molding the insulating member between the internal terminal and the external terminal, the step of preparing the internal terminal is a step of preparing one plate-shaped member, A first terminal portion extending in a plate shape in a first direction, and a second terminal branched from a side of a central portion of the first terminal portion and extending in a plate shape in a second direction orthogonal to the first direction. The one piece having a part A step of preparing a plate-like member; and a step in which the first end on one side and the second part on the other side are opposed to each other with reference to the center of the first terminal in the first direction. And a step of bending the first terminal portion or the second terminal portion at a connection portion between the first terminal portion and the second terminal portion, wherein the first terminal portion and the second terminal portion are bent. Provided is a method for manufacturing a connector.

  According to such a method, by forming the first terminal portion into a shape in which the base end portion does not spread, the facing area where the first terminal portion faces the substrate is smaller than in a form in which the base end portion is widened. Accordingly, it is possible to suppress the electrical capacitive coupling between the first terminal portion and the electrode in the substrate inner layer, and to suppress the deterioration of the electrical characteristics of the board-mounted coaxial connector. Further, by forming the first terminal portion and the second terminal portion with one plate-shaped member, the internal terminals can be easily formed. Further, since the first terminal portion can be formed only by bending the first portion and the second portion, the first terminal portion can be easily formed.

  According to a sixth aspect of the present invention, the step of preparing the one plate-like member includes the step of preparing the plate-like member having a through-hole formed in the first terminal portion, wherein the insulating member The method of manufacturing a board-mounted coaxial connector according to the fifth aspect, wherein the step of insert-forming includes the step of arranging the insulating member in the through hole of the first terminal portion. According to such a method, by disposing the insulating member in the through hole, the first terminal portion can be firmly held by the insulating member.

  Hereinafter, exemplary embodiments of a board-mounted coaxial connector and a method for manufacturing the same according to the present invention will be described with reference to the accompanying drawings. The present invention is not limited to the specific configurations of the following embodiments, but includes configurations based on similar technical ideas.

(Embodiment 1)

  1 and 2 are perspective views showing a board-mounted coaxial connector (hereinafter, referred to as a coaxial connector) 2 according to the first embodiment. The coaxial connector 2 shown in FIGS. 1 and 2 includes an internal terminal 4, an external terminal 6, and an insulating member 8 as main components. In FIG. 1, the insulating member 8 is indicated by a solid line, and in FIG. 2, the insulating member 8 is indicated by a dotted line.

  In the coaxial connector 2, the back surfaces of the internal terminals 4 and the external terminals 6 are mounted on a board (not shown), and the front surfaces of the internal terminals 4 and the external terminals 6 are connected to a mating connector (not shown). When the coaxial connector 2 is connected to the mating connector, the internal terminals 4 and the external terminals 6 are fitted to corresponding terminals of the mating connector.

  As shown in FIGS. 1 and 2, the internal terminal 4 includes a center conductor 10 and a mounting part 12. The center conductor 10 is a terminal (first terminal portion) for electrically connecting the internal terminal 4 to a mating connector, and the mounting portion 12 is for mounting the internal terminal 4 on a substrate and electrically connecting the internal terminal 4 to a board. Terminal (second terminal part).

  The center conductor 10 is a member protruding in the direction A (insertion direction) so as to be inserted into the terminal of the mating connector. The center conductor 10 has a cylindrical shape (cylindrical in the first embodiment) extending in a cylindrical shape in the direction A. A through-hole 14 penetrating in the direction A is formed at the center of the center conductor 10.

  As shown in FIGS. 1 and 2, the center conductor 10 has a pin shape that can be inserted into a socket-shaped terminal (not shown) of the mating connector. The pin shape has a contact surface on the outer periphery and the socket shape has a contact surface on the inner periphery.

  The mounting portion 12 is a plate-shaped member extending in the B direction from the base end portion 10a (FIG. 2) of the center conductor 10. The B direction in the first embodiment is orthogonal to the A direction. The mounting section 12 is mounted on the board by soldering.

  The external terminal 6 includes an external conductor 16 and a mounting part 18. The external conductor 16 is a terminal (third terminal portion) for electrically connecting the external terminal 6 to a mating connector, and the mounting portion 18 is for mounting the external terminal 6 on a substrate and electrically connecting the external terminal 6 to a mating connector. Terminal (fourth terminal unit). The center conductor 10 of the internal terminal 4 is arranged inside the outer conductor 16.

  The outer conductor 16 is configured as a tubular (cylindrical in the first embodiment) member extending in the A direction similarly to the above-described center conductor 10 so as to be fitted to the terminal of the mating connector. A groove 16a for fitting a terminal of a mating connector is formed on the outer peripheral surface of the external conductor 16.

  The mounting portion 18 is a plate-shaped member extending laterally from the base end portion 16b (FIG. 2) of the external conductor 16. The mounting section 18 is mounted on the board by soldering. In the first embodiment, three mounting portions 18 are provided.

  The insulating member 8 is an insulating member disposed between the internal terminal 4 and the external terminal 6 so as to electrically insulate the internal terminal 4 from the external terminal 6. The insulating member 8 is made of, for example, a resin.

  As an example of a method of manufacturing the coaxial connector 2 having the above-described configuration, first, the internal terminals 4 and the external terminals 6 are prepared. Specifically, the internal terminals 4 and the external terminals 6 having the shapes shown in FIGS. 1 and 2 are prepared. The internal terminals 4 and the external terminals 6 can be manufactured by processing a single metal plate, and are formed by, for example, plating nickel and gold on the surface of a copper alloy material. A detailed method for manufacturing the internal terminal 4 will be described later.

  Thereafter, the internal terminals 4 and the external terminals 6 are held in a state of being spaced apart from each other using a mold or the like. In this state, a resin as a raw material of the insulating member 8 is insert-molded between the internal terminal 4 and the external terminal 6 to form the insulating member 8. Thereby, the coaxial connector 2 shown in FIGS. 1 and 2 can be manufactured.

  FIG. 3 shows an image diagram of a state in which the coaxial connector 2 having the above-described configuration is mounted on a board.

  FIG. 3 schematically shows the center conductor 10 of the internal terminal 4 in the coaxial connector 2, and the front-side ground electrode 22 and the rear-side ground electrode 24 of the substrate 20. In the state shown in FIG. 3, when a high-frequency signal flows through the coaxial connector 2, between the center conductor 10 and the front-side ground electrode 22 (arrow C) and between the center conductor 10 and the back-side ground electrode 24 (arrow D). , Electrical capacitive coupling occurs. Among them, particularly, when the capacitance generated between the center conductor 10 indicated by the arrow D and the back-side ground electrode 24 increases, the electrical characteristics often deteriorate.

  In order to suppress such deterioration of the electric characteristics, in the coaxial connector 2 of the first embodiment, the shape of the center conductor 10 of the internal terminal 4 is devised. Specifically, description will be given with reference to FIGS. 4A and 4B.

  FIG. 4A is a side view of the internal terminal 4, and FIG. 4B is a rear view of the internal terminal 4. As shown in FIGS. 4A and 4B, the center conductor 10 in the first embodiment has a substantially cylindrical shape, and includes a base end 10a to which the mounting portion 12 is connected, and a base end 10a. A cylindrical portion 10b extending in the insertion direction A in a cylindrical shape (in the first embodiment, a cylindrical shape). The cylindrical portion 10b constitutes a tip 10c of the center conductor 10.

  In the first embodiment, in particular, the outer peripheral portion is linearly formed from the base end portion 10a to the cylindrical portion 10b, and the outer diameter (diameter) D1 of the base end portion 10a and the outer diameter D2 of the cylindrical portion 10b are the same. Is set to In this way, the base end portion 10a of the center conductor 10 is not formed with a flange portion that expands in the radial direction. In the first embodiment, the width of the mounting portion 12 is also set to the same length as the width (outer diameter D1) of the base end portion 10a.

  In contrast to the configuration of the first embodiment described above, a form in which a flange having an enlarged diameter is formed at the base end of the center conductor, as in the coaxial connector of Patent Document 1, may be considered. In this embodiment, a flange having an increased area is formed at a position closest to the substrate in the coaxial connector. For this reason, the area where the center conductor faces the substrate 20 increases, and the capacitance generated between the center conductor and the back-side ground electrode 24 increases, which may cause a deterioration in the electrical characteristics of the coaxial connector.

  In the coaxial connector 2 of the first embodiment, the flange is not formed at the base end 10a of the center conductor 10 as described above, and the outer peripheral portion is linear in the direction A as the insertion direction. According to such a configuration, the facing area where the center conductor 10 faces the substrate 20 can be reduced, so that the capacitance generated between the center conductor 10 and the back-side ground electrode 24 can be reduced, and The deterioration of the electrical characteristics of the connector 2 can be suppressed.

  An example of a method for forming the internal terminal 4 having the above-described configuration will be described with reference to FIGS. 5A to 5C.

  First, one plate-like member 26 is prepared (Step S1). Specifically, as shown in FIG. 5A, a conductive plate-shaped member 26 integrally having a first terminal portion 28 and a second terminal portion 30 is prepared.

  As shown in FIG. 5A, the first terminal portion 28 is a plate-like portion extending in the first direction E. The second terminal portion 30 is a plate-like portion extending in a second direction F orthogonal to the first direction E. The first terminal portion 28 and the second terminal portion 30 are integrally formed so as to extend along the same plane. As shown in FIG. 5A, the first terminal portion 28 and the second terminal portion 30 are connected to each other by a connection line 31. In addition, the second terminal portion 30 is branched laterally from a central portion of the first terminal portion 28 in the E direction.

  Next, the first terminal portion 28 is bent (step S2). Specifically, as shown in FIG. 5A, the first portion 28a on one side and the first portion 28a on the other side are based on a center line 29 which is a center position of the first terminal portion 28 in the first direction E. Each of the second portions 28b is curved.

  As shown in FIG. 5B, the first portion 28a is curved along the circumferential direction R1, and the second portion 28b is curved along the circumferential direction R2 opposite to the circumferential direction R1. The tip 28c of the first portion 28a and the tip 28d of the second portion 28b are arranged to face each other. The tip 28c and the tip 28d may be in contact or non-contact.

  The first terminal portion 28 curved in this manner is formed in a cylindrical shape extending linearly along the axial direction without any irregularities on the outer peripheral portion.

  Next, the first terminal portion 28 is bent (Step S3). Specifically, the first terminal portion 28 is bent by about 90 degrees with reference to the connection line 31 which is a connection portion between the first terminal portion 28 and the second terminal portion 30 shown in FIG. 5B.

  When the first terminal portion 28 is bent, the shape becomes as shown in FIG. 5C. In the plate-like member 26 shown in FIG. 5C, the first terminal portions 28 constitute the central conductor 10, and the second terminal portions 30 become the internal terminals 4 constituting the mounting portion 12.

  According to such a method of forming the internal terminal 4, the center conductor 10 can be formed in a tubular shape in which the outer peripheral portion without the flange at the base end portion is linearly formed. Therefore, the area of the substrate 20 facing the back-side ground electrode 24 can be reduced as compared with a form having a flange at the base end of the center conductor, and the capacitance generated between the back-side ground electrodes 24 can be suppressed. However, deterioration of the electrical characteristics of the coaxial connector 2 can be suppressed.

  As described above, since the deterioration of the electric characteristics of the coaxial connector 2 can be suppressed, even if a large number of electrode layers are provided without reducing the number of electrode layers in the inner layer of the substrate 20, the center conductor of the internal terminal 4 is provided. The desired electrical characteristics can be obtained by reducing the capacitive coupling between the electrode 10 and the electrode of the substrate 20. As a result, restrictions on the design of the substrate 20 can be reduced.

  Further, according to the above method, since the center conductor 10 and the mounting portion 12 can be formed from one plate-like member 26, the internal terminals 4 can be formed by a simple method. Furthermore, since the center conductor 10 can be formed only by bending the first portion 28a and the second portion 28b of the first terminal portion 28, the first terminal portion 28 can be formed by a simple method. Can be.

  The shape of the internal terminal 4 used in the coaxial connector 2 according to the first embodiment has been described in detail, but various modifications are possible. A specific modified example will be described with reference to FIGS. 6A to 10D. In the following modified examples, points different from the first embodiment will be mainly described, and description of overlapping contents will be omitted. In addition, the same or equivalent components will be described with the same reference numerals.

(Modification 1)
6A to 6C show an internal terminal 40 according to the first modification. The internal terminal 40 shown in FIGS. 6A to 6C includes a center conductor 42 and a mounting part 43.

  Similarly to the internal terminal 4 of the first embodiment, the base end portion 42a of the central conductor 42 does not have a radially expanded flange portion, and is set to the same outer diameter as the outer diameter of the cylindrical portion 42b. . Accordingly, the area of the center conductor 42 facing the substrate 20 can be reduced, and thus, similarly to the coaxial connector 2 of the first embodiment, the deterioration of the electrical characteristics of the coaxial connector using the internal terminals 40 is suppressed. be able to.

  In the center conductor 42 of the first modification, the distal end portion 42c at a position facing the base end portion 42a has a tapered shape narrowed in the radial direction from the cylindrical portion 42b. That is, the outer diameter of the distal end portion 42c is smaller than the outer diameter of the cylindrical portion 42b, and is configured to gradually decrease toward the distal end side. By thus forming the distal end portion 42c into a tapered shape in which the distal end side is narrowed, the distal end portion 42c can be easily inserted into the terminal of the mating connector.

  The central conductor 42 of the first modification is further provided with a notch 44 at the base end 42a. The above-mentioned insulating member 8 (FIG. 1) is arranged in the notch 44. By disposing the insulating member 8 in the notch 44, the center conductor 42 can be firmly fixed by the insulating member 8. By providing the notch 44 in this way, even if the insulating member 8 does not have a retaining function without providing a flange at the base end 42a of the central conductor 42, the strength of the central conductor 42 can be reinforced. it can.

  In order to form the internal terminals 40 as shown in FIGS. 6A to 6C, the notch 44 is formed in advance in the plate-like member 26 shown in FIG. 5A, and the same method as that shown in FIGS. 5A to 5C is used. The above method may be performed.

(Modification 2)
Next, FIG. 7 shows an internal terminal 50 according to a second modification. The internal terminal 50 shown in FIG. 7 includes a center conductor 52 and a mounting part 43. The center conductor 52 includes a base end 52a, a tube 42b, and a tip 42c.

  The internal terminal 50 shown in FIG. 7 differs from the internal terminal 40 of the first modification in that a notch 55 is formed in addition to the notch 44 at the base end 52a of the center conductor 52.

  The notch 55 is provided, and the insulating member 8 is arranged in the notch 55. Thereby, the center conductor 52 can be more firmly fixed by the insulating member 8 and the strength of the center conductor 52 can be reinforced.

  In order to form the internal terminal 50 as shown in FIG. 7, the notch 44 and the notch 55 are formed in advance in the plate-like member 26 shown in FIG. 5A, and the method shown in FIGS. 5A-5C is used. What is necessary is just to implement the method similar to.

(Modification 3)
Next, FIGS. 8A and 8B show an internal terminal 60 according to the third modification. The internal terminals 60 shown in FIGS. 8A and 8B include a center conductor 62 and a mounting portion 43. The center conductor 62 includes a base end portion 62a, a cylindrical portion 62b, and a front end portion 42c.

  The internal terminal 60 shown in FIGS. 8A and 8B differs from the internal terminal 40 of the first modification in that a through hole 64 is formed on the side surface of the cylindrical portion 62b of the center conductor 62.

  The insulating member 8 (not shown) is disposed in the through hole 64. The insulating member 8 is disposed so as to surround the outer peripheral portion and the inner peripheral portion of the central conductor 62 through the through hole 64, and is disposed so as not to expose the through hole 64 in a completed state of the coaxial connector 2 as shown in FIG. You.

  By arranging the insulating member 8 in the through hole 64 in this manner, a wedge structure can be obtained, and the center conductor 62 can be more firmly fixed. Further, by suppressing the detachment and rotation of the center conductor 62 by the insulating member 8, deterioration of the electric characteristics of the coaxial connector 2 can be suppressed. Further, since the directionality of the center conductor 62 and the mounting portion 43 is uniquely determined by the insulating member 8 and does not move, the electric / mechanical due to the rotation of the center conductor 62 when the coaxial connector 2 is mounted on the substrate 20. It is possible to prevent the occurrence of a malfunction of the performance.

  In order to form the internal terminal 60 as shown in FIGS. 8A and 8B, the notch 44 and the through hole 64 in the plate-like member 26 shown in FIG. What is necessary is just to implement the same method as the method mentioned above.

(Embodiment 2)
An internal terminal used in the coaxial connector according to the second embodiment of the present invention will be described. In the second embodiment, differences from the first embodiment will be mainly described. In the second embodiment, the same or equivalent components as those in the first embodiment are denoted by the same reference numerals and described. In the second embodiment, descriptions overlapping with the first embodiment are omitted.

  In the first embodiment, the internal terminals 4 are formed by bending, whereas in the second embodiment, the internal terminals are formed by drawing, which is different from the first embodiment.

  FIG. 9 shows an internal terminal 70 according to the second embodiment. The internal terminal 70 shown in FIG. 9 includes a center conductor 72 and a mounting part 74.

  The center conductor 72 is formed in a substantially cylindrical shape, and includes a base end 72a, a tube 72b, and a tip 72c.

  In the first embodiment, the through-hole 14 is formed so as to penetrate the center of the center conductor 10. On the other hand, in the second embodiment, the through-hole is not formed and the through-hole 14 is closed. It is formed in a dome shape. Further, a rectangular through-hole 76 is formed on the side surface of the cylindrical portion 72b.

  The internal terminal 70 shown in FIG. 9 can be formed by drawing a single plate-like member 80 as shown in FIG. 10A.

  Specifically, the plate member 80 shown in FIG. 10A includes a first plate portion 82 and a second plate portion 84. The first plate portion 82 has a constant width D3. A second plate portion 84 continuing from the first plate portion 82 includes a base end portion 84a formed so as to gradually increase from the width D3 to the width D4, and a central portion 84b that extends from the base end portion 84a at a constant width D4. , A distal end portion 84c that smoothly narrows from the central portion 84b toward the distal end.

  In order to form the internal terminals 70, a second plate portion 84 having a width larger than that of the first plate portion 82 is subjected to drawing using a punch or the like. Thereby, the intermediate body 86 shown in FIG. 10B is formed.

  In the intermediate body 86, a cylindrical tubular portion 88 protruding in the direction A orthogonal to the width direction is formed in the second plate portion 84. Since the cylindrical portion 88 is formed by drawing, a through hole penetrating the center portion is not formed.

  In the second plate portion 84 shown in FIG. 10B, a flange portion 89 having a diameter larger than the outer diameter of the cylindrical portion 88 is formed at the base end. In order to form the tubular portion 88 by drawing, an enlarged diameter portion such as a flange portion 89 is required.

  Next, the side surface of the cylindrical portion 88 of the intermediate body 86 shown in FIG. 10B is cut out. Thereby, a through hole 90 is formed as shown in FIG. 10C.

  Next, in the intermediate body 86 shown in FIG. 10C, the flange 89 is cut. Thereby, the internal terminal 70 (FIG. 9) as shown in FIG. 10D can be formed. In the internal terminal 70 shown in FIG. 10D, the cylindrical portion 88 corresponds to the central conductor 72, and the first plate portion 82 corresponds to the mounting portion 74.

  Also in the internal terminal 70 shown in FIGS. 9 and 10D, the base end portion 72a of the center conductor 72 does not have a flange portion extending in the radial direction, and is set to have the same outer diameter as the cylindrical portion 72b. According to such a configuration, similarly to the internal terminal 4 of the first embodiment, it is possible to suppress the deterioration of the electrical characteristics of the coaxial connector using the internal terminal 70.

  In the case where the internal terminal 70 of the second embodiment is formed by the above-described method, the shape of another portion of the intermediate body 86 in the cutting step of forming the through hole 90 and the cutting step of cutting the flange 89 is described. It may be difficult, for example, to collapse. In contrast to the method of forming the internal terminals 70 by drawing, the method of forming the internal terminals 4 by bending as in Embodiment 1 does not require a step of cutting or cutting. Therefore, the internal terminals 4 can be formed accurately and easily.

  As described above, the present invention has been described with reference to the first and second embodiments and the modifications, but the present invention is not limited to the first and second embodiments and the modifications. For example, in the first embodiment, the case where the outer diameter of the base end 10a of the center conductor 10 is the same as the outer diameter of the cylindrical portion 10b excluding the base end 10a has been described. However, the length may be shorter than the outer diameter of the cylindrical portion 10b. Even in such a case, since the area of the center conductor 10 facing the substrate 20 can be reduced, deterioration of the electrical characteristics of the coaxial connector 2 can be suppressed. As described above, when the outer diameter of the base end portion 10a is set to be equal to or less than the outer diameter of the cylindrical portion 10b excluding the base end portion 10a, deterioration of the electrical characteristics of the coaxial connector 2 can be suppressed.

  In this specification, the term “tubular shape” includes not only a perfect cylindrical shape but also a cylindrical shape having an outer diameter that is not constant and changes, or a cylindrical shape in which irregularities, notches, protrusions, and the like are added. (Approximately cylindrical, substantially cylindrical, roughly cylindrical, etc.). The “outer diameter” in the present specification means the length of the longest part in a cross section orthogonal to the projecting direction (insertion direction A) of the center conductor 10. In addition, the term “cylindrical” in this specification includes not only a perfect cylindrical shape, but also a cylindrical shape having an outer diameter that is not constant and changes, or a cylindrical shape in which irregularities, notches, protrusions, and the like are added. (Approximately cylindrical, substantially cylindrical, roughly cylindrical, etc.).

  In the first embodiment, the case where the internal terminal 4 is formed by bending one plate-shaped member 26 when forming the internal terminal 4 has been described. However, the present invention is not limited to such a case. The internal terminals 4 may be formed by performing processing other than bending, such as drawing, based on a plurality of members. It is to be noted that forming the internal terminals 4 by bending one plate-shaped member 26 allows the internal terminals 4 to be formed accurately and easily.

  Further, in the first embodiment, as described with reference to FIGS. 5B and 5C, the case where the first terminal portion 28 is bent with respect to the second terminal portion 30 in the plate-like member 26 has been described, but the present invention is not limited to such a case. . Instead of the first terminal portion 28, the second terminal portion 30 may be bent with respect to the first terminal portion 28. That is, one of the first terminal portion 28 and the second terminal portion 30 may be bent.

  Further, in the third modification, the case where the center conductor 62 is provided with the through hole 64 to function as the retaining prevention mechanism has been described, but the present invention is not limited to such a case. For example, a protrusion may be provided on the side surface of the center conductor 62 or a groove may be provided to dispose the insulating member 8 so as to function as a retaining prevention mechanism. In addition, since the thickness of the center conductor 62 is relatively small, it is easier to perform processing by providing the through hole 64 instead of the protrusion or groove.

  While this disclosure has been fully described in connection with preferred embodiments thereof with reference to the accompanying drawings, various variations and modifications will be apparent to those skilled in the art. It is to be understood that such changes and modifications are included therein unless they depart from the scope of the present disclosure as set forth in the appended claims. In addition, combinations of elements and changes in the order in each embodiment can be realized without departing from the scope and spirit of the present disclosure.

  In addition, by appropriately combining any of the above-described various embodiments and modifications, the effects of the respective embodiments can be achieved.

  The present invention is applicable to any board-mounted coaxial connector and any method for manufacturing the same.

2 Coaxial connector (board mounted coaxial connector)
4 Internal terminal 6 External terminal 8 Insulating member 10 Central conductor (first terminal portion)
10a Base end 10b Tube 10c Tip 12 Mounting part (second terminal part)
14 through hole 16 external conductor (third terminal)
16a Groove 16b Base end 18 Mounting part (fourth terminal part)
Reference Signs List 20 substrate 22 front side ground electrode 24 back side ground electrode 26 plate member 28 first terminal portion 28a first portion 28b second portion 28c tip 28d tip 29 center line 30 second terminal portion 31 connection line 40 internal terminal 42 Center conductor 42a Base end 42b Tube part 42c Tip part 43 Mounting part 44 Notch 50 Internal terminal 52 Center conductor 52a Base end 55 Notch 60 Internal terminal 62 Center conductor 62a Base end 62b Tube part 64 Through hole 70 Internal terminal 72a proximal end 72b cylindrical portion 72c distal end 74 mounting portion 76 through hole 80 plate member 82 first plate 84 second plate 84a proximal end 84b central portion 84c distal end 86 intermediate body 88 cylindrical portion 89 flange Part 90 through hole

Claims (3)

A board-mounted coaxial connector including an internal terminal, an external terminal, and an insulating member disposed between the internal terminal and the external terminal, and mounted on a substrate via the internal terminal and the external terminal. hand,
A first terminal protruding so as to be inserted into a terminal of a mating connector; and a first terminal extending from a base end of the first terminal in a direction intersecting a protruding direction of the first terminal. A second terminal portion mounted on the substrate,
The first terminal portion has a tubular portion extending in a tubular shape from the proximal end portion, and an outer diameter of the proximal end portion is equal to an outer diameter of the tubular portion excluding the proximal end portion and the second terminal. A board-mounted coaxial connector, wherein a width of the portion is set equal to an outer diameter of the base end portion . The first terminal portion is formed of a single plate-shaped member integrated with the second terminal portion,
The cylindrical portion of the first terminal portion includes a plate-shaped first portion extending to one side in the circumferential direction, and a plate-shaped second portion extending from the first portion to the other side in the circumferential direction. 2. The board-mounted coaxial connector according to claim 1, wherein the first portion and the second portion are arranged such that tips thereof face each other. 3.   The board mounted type coaxial connector according to claim 1, wherein the cylindrical portion of the first terminal portion has a through hole on a side surface, and the insulating member is arranged to pass through the through hole.

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