JP2018110067A - Coaxial connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coaxial connector having an extremely high positional accuracy of a socket, and that prevents unsteadiness of the socket.SOLUTION: A coaxial connector comprises an external conductor 40 and a socket 30. The coaxial connector further comprises a first resin structure 10. The socket 30 is held and fixed at both ends of the first resin structure 10. The first resin structure 10 is fixed to the external conductor 40. Further, the coaxial connector may comprise a second resin structure 20, and the second resin structure 20 may be fixed to the external conductor 40 and fitted to the first resin structure 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a coaxial connector, and more particularly, to a coaxial connector in which a socket has extremely high positional accuracy and the socket does not wobble.

  A conventional coaxial connector is disclosed in Japanese Patent Application Laid-Open No. 2010-67425. FIG. 10 shows a coaxial connector 500 disclosed in Patent Document 1.

  The coaxial connector 500 includes an outer conductor (housing) 101 and a socket 102, both of which are made of metal. The coaxial connector 500 includes a resin structure (bushing) 103 for fixing the socket 102 to the outer conductor 101. The resin structure 103 also functions to insulate the socket 102 from the external conductor.

  The socket 102 includes a connection portion (cylindrical portion) 102 a into which a center pin of another coaxial connector (not shown) is inserted, and a back surface portion 102 b to be attached to the resin structure 103.

  The resin structure 103 includes a circular portion 103a for accommodating the connecting portion 102a of the socket 102 and a holding portion 103b for attaching the socket 102.

  The socket 102 is fixed to the resin structure 103 by housing the connecting portion 102a in the circular portion 103a and attaching the back surface portion 102b to the holding portion 103b.

  The socket 102 is cantilevered to the resin structure 103. That is, a clearance is provided between the connection portion 102a of the socket 102 and the circular portion 103a of the resin structure 103, and the socket 102 is attached to the resin structure 103 only by the back surface portion 102b.

  The resin structure 103 to which the socket 102 is fixed is cantilevered to the outer conductor 101 by caulking the caulking portion 101 a of the outer conductor 101. That is, in the resin structure 103, only the holding portion 103b is fixed to the outer conductor 101, and the circular portion 103a is not fixed to the outer conductor 101.

  A coaxial cable 104 is connected to the coaxial connector 500. More specifically, the central conductor 104 a of the coaxial cable 104 is connected to the socket 102, and the outer mesh conductor (outer conductor) 104 b of the coaxial cable 104 is connected to the outer conductor 101.

  The coaxial connector 500 is used by being fitted to another corresponding coaxial connector having a center pin. More specifically, the connecting portion 102a of the socket 102 of the coaxial connector 500 and the center pin of another coaxial connector are connected, and the outer conductor 101 of the coaxial connector 500 and the outer conductor of another coaxial connector are connected. use.

JP 2010-67425 A

  The coaxial connector 500 has a problem that the relative position of the connecting portion 102a of the socket 102 with respect to the outer conductor 101 is not stable because the socket 102 is cantilevered to the resin structure 103, and the positional accuracy is low. . That is, even if the resin structure 103 can be fixed to the outer conductor 101 with high positional accuracy, the positional accuracy of the connecting portion 102a of the socket 102 that is cantilevered with respect to the resin structure 103 is low. There is a problem that the relative positional accuracy of the connecting portion 102a of the socket 102 with respect to the outer conductor 101 is low.

  In the coaxial connector 500, only the holding portion 103b of the resin structure 103 is fixed to the outer conductor 101, the circular portion 103a of the resin structure 103 is not fixed to the outer conductor 101, and the resin structure 103 is connected to the outer conductor 101. Since the cantilever is fixed, the relative position of the connecting portion 102a of the socket 102 with respect to the outer conductor 101 is not stable, and there is a problem that the positional accuracy is low. That is, contrary to the above, even if the socket 102 can be fixed to the resin structure 103 with high positional accuracy, the positional accuracy of the resin structure 103 cantilevered with respect to the outer conductor 101 is low. There is a problem that the relative positional accuracy of the connecting portion 102a of the socket 102 with respect to the outer conductor 101 is low. Of course, the positional accuracy of the resin structure 103 with respect to the outer conductor 101 is low, and the positional accuracy of the socket 102 with respect to the resin structure 103 may be low.

  Further, in the coaxial connector 500, the socket 102 is cantilevered and fixed to the resin structure 103, and the resin structure 103 is cantilevered and fixed to the outer conductor 101. In some cases, wobbling occurs in the circular portion 103a of the structure 103.

  The coaxial connector 500 has a low relative positional accuracy of the connecting portion 102a of the socket 102 with respect to the outer conductor 101, and the connecting portion 102a of the socket 102 may be wobbled. In some cases, it was not possible to fit another corresponding coaxial connector. That is, the center pin and the connection portion 102a are not aligned with each other, and the center pin may not be inserted into the connection portion 102a. In some cases, the positions of the center pin and the connection portion 102a do not match, and at least one of the center pin and the connection portion 102a may be damaged.

  The coaxial connector of the present invention has been made to solve the above-described problems, and as a means for the coaxial connector of the present invention, the coaxial connector includes an outer conductor and a socket, and further includes a first resin structure, The socket was fixed to both ends of the first resin structure, and the first resin structure was fixed to the external conductor.

  It is preferable that the first resin structure and the socket are inseparably integrated. For example, the position accuracy of the socket with respect to the first resin structure can be increased by integrally molding the first resin structure and the socket.

  It is preferable that the socket is formed with a stopper from the first resin structure. In this case, the socket does not come off from the first resin structure, and high positional accuracy of the socket with respect to the first resin structure can be maintained over time. In addition, as a retainer, a longitudinal retainer, a lateral retainer, a height retainer, and the like can be formed.

  It is preferable that the first resin structure has a cross shape. In this case, the first resin structure can be fixed to the outer conductor with high positional accuracy.

  Caulking can be used for fixing the first resin structure to the outer conductor. In this case, the first resin structure can be firmly fixed to the outer conductor with high positional accuracy.

  Alternatively, press fitting can be used to fix the first resin structure to the outer conductor. In this case, the first resin structure can be easily fixed to the outer conductor with high positional accuracy.

  Furthermore, the second resin structure is provided, the second resin structure is fixed to the outer conductor, the first resin structure has a recess, and the second resin structure is fitted into the recess of the first resin structure. It is preferable. In this case, the positional accuracy of the first resin structure with respect to the outer conductor can be increased, and thus the positional accuracy of the socket with respect to the outer conductor can be increased.

  It is preferable that the outer conductor and the second resin structure are inseparably integrated. For example, by integrally molding the outer conductor and the second resin structure, the positional accuracy of the second resin structure with respect to the outer conductor is increased, and thus the positional accuracy of the first resin structure with respect to the outer conductor is increased. Furthermore, the positional accuracy of the socket with respect to the outer conductor is increased.

  It is preferable that the second resin structure is press-fitted into the recess of the first resin structure. In this case, the positional accuracy of the first resin structure with respect to the second resin structure is increased, and the positional accuracy of the first resin structure with respect to the outer conductor is increased. Position accuracy is increased.

  It is preferable that the outer conductor is formed with a stopper for the second resin structure. In this case, the second resin structure does not come off from the outer conductor, and the high positional accuracy of the second resin structure with respect to the outer conductor can be maintained over time.

  It is preferable that both the concave portion of the first resin structure and the second resin structure have a cross shape. In this case, the positional accuracy of the first resin structure with respect to the second resin structure is increased, and the positional accuracy of the first resin structure with respect to the outer conductor is increased. Position accuracy is increased.

  In the coaxial connector according to the present invention, since the socket is fixed at both ends to the first resin structure, the position of the socket is stable and the positional accuracy is extremely high. Further, the coaxial connector of the present invention does not wobble the socket.

1 is a perspective view showing a coaxial connector 100 according to an embodiment. 1 is an exploded perspective view showing a coaxial connector 100. FIG. 1 is an exploded perspective view showing a coaxial connector 100. FIG. 4A and 4B are perspective views of main parts of the coaxial connector 100, respectively. 5A and 5B are perspective views of main parts of the coaxial connector 100, respectively. 1 is a perspective view of a main part of a coaxial connector 100. FIG. 7A and 7B are perspective views of main parts of the coaxial connector 100, respectively. FIG. 8A is a perspective view of the coaxial connector 100. FIG. 8B is a perspective view of a main part of the coaxial connector 100. It is a perspective view which shows another coaxial connector 200 which can be fitted and used for the coaxial connector 100. FIG. 10 is an exploded perspective view showing a coaxial connector 500 disclosed in Patent Document 1. FIG.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The embodiment is an example of the embodiment of the present invention, and the present invention is not limited to the content of the embodiment. Further, the drawings are for helping understanding of the embodiment, and may not be drawn strictly. For example, a drawn component or a dimensional ratio between the components may not match the dimensional ratio described in the specification. In addition, the constituent elements described in the specification may be omitted in the drawings or may be drawn with the number omitted.

  1 to 8 show a coaxial connector 100 according to an embodiment. However, FIG. 1 is a perspective view. 2 and 3 are exploded perspective views, respectively. 3 (A), (B), FIG. 4 (A), (B), FIG. 5 (A), (B), FIG. 6, FIG. 7 (A), and (B) are perspective views of main parts, respectively. is there. 8A is a perspective view, and FIG. 8B is a perspective view of a main part.

  In the following, first, an outline of the coaxial connector 100 will be described, and then details of each part of the coaxial connector 100 will be described.

  As shown in FIGS. 1 to 3, the coaxial connector 100 includes a first resin structure 10, a second resin structure 20, a socket 30, and an external conductor 40.

  The first resin structure 10 and the second resin structure 20 are each made of an engineering plastic that can be injection molded, such as epoxy, liquid crystal polymer, and nylon.

  The socket 30 and the external conductor 40 are each made by processing a metal plate such as phosphor bronze, and the surfaces thereof are plated with Ni, Ag, Au, or the like.

  As shown in FIGS. 5A and 5B, the socket 30 and the first resin structure 10 are integrally formed, and the socket 30 and the first resin structure 10 are inseparably integrated.

  As shown in FIG. 7A, the outer conductor 40 and the second resin structure 20 are integrally formed, and the outer conductor 40 and the second resin structure 20 are inseparably integrated.

  As shown in FIG. 8A, the integrated socket 30 and the first resin structure 10 are fixed to the integrated outer conductor 40 and the second resin structure 20.

  Details of each part will be described below.

  4A and 4B show the socket 30. FIG. However, FIG. 4A shows the surface of the socket 30 on the side to which the center pin of another connector (not shown) is connected. FIG. 4B shows the back surface. In the drawing, arrows indicate the X direction, Y direction, and Z direction. In the following, for convenience of explanation, the X direction is the horizontal direction, the Y direction is the vertical direction, and the Z direction is the height direction. (Same in the following).

  As described above, the socket 30 is manufactured by processing a metal plate and has a strip shape.

  The socket 30 includes a through hole 31 into which a center pin is inserted.

  The socket 30 is formed with a pair of cut-and-raised contacts 32 on both sides of the through-hole 31 for guiding the center pin and contacting the center pin for electrical connection.

  The socket 30 is formed with three types of retainers 33, 34, and 35. The stoppers 33, 34, and 35 are for preventing the socket 30 integrally formed with the first resin structure 10 from being detached from the first resin structure 10. The retainers 34 and 35 are each formed as a pair.

  The stopper 33 is formed by providing a taper at the tip of the socket 30. The retainer 33 is mainly for preventing separation in the height direction (Z direction).

  The stopper 34 is formed by providing recesses on both sides of the socket 30. The retainer 34 is mainly for preventing separation in the vertical direction (Y direction).

  The stopper 35 is formed by providing a taper on both sides of the socket 30. The retainer 35 is mainly for preventing separation in the height direction (Z direction).

  5A and 5B show the integrally molded socket 30 and the first resin structure 10. However, FIG. 5A shows the surface of the first resin structure 10 on the side where another connector (not shown) is fitted. FIG. 5B shows the back surface.

  The first resin structure 10 has a cross shape in which the vertical structure 11 and the horizontal structure 12 intersect each other.

  In the first resin structure 10, a through hole 13 is formed at the intersection of the vertical structure 11 and the horizontal structure 12.

  Then, the through hole 31 and the cut and raised contact 32 are arranged in the through hole 13 portion, and the socket 30 and the first resin structure 10 are integrally molded. The socket 30 is fixed at both ends to the first resin structure 10 at the through-hole 13 portion.

  On the back surface (the side shown in FIG. 5B) of the first resin structure 10, a recess 14 for fitting the second resin structure 20 is formed. The recess 14 has a cross shape.

  A pair of flanges 15 are formed at the end of the first resin structure 10 for caulking and locking a plate-like caulking portion 43 of the outer conductor 40 described later.

  As described above, since the socket 30 and the first resin structure 10 are integrally formed, the relative positional accuracy of the socket 30 with respect to the first resin structure 10 is extremely high. That is, the integral molding is generally performed by housing the socket 30 in a mold (not shown) and then injecting resin into the mold and curing it. However, the socket 30 is placed in the correct position. If it can be accommodated in the mold, the relative positional accuracy of the socket 30 with respect to the first resin structure 10 becomes extremely high. That is, the relative positional accuracy of the through hole 31 of the socket 30 with respect to the first resin structure 10 is extremely high.

  Further, since the socket 30 is fixed at both ends to the first resin structure 10, the socket 30 fixed to the first resin structure 10 does not wobble. That is, the relative position of the socket 30 with respect to the first resin structure 10 does not vary. That is, the relative position of the through hole 31 of the socket 30 with respect to the first resin structure 10 does not vary.

  Further, since the socket 30 is formed with three types of retainers 33, 34, and 35 for preventing the socket 30 from being detached from the first resin structure 10, the socket 30 is removed from the first resin structure 10. The position accuracy of the socket 30 with respect to the first resin structure 10 can be maintained over time without deviating. As shown in FIG. 5B, the resin of the first resin structure 10 is deposited on the taper of the stopper 33 and the stopper 35, and the socket 30 is mainly high from the first resin structure 10. This prevents separation in the vertical direction (Z direction). In addition, the resin of the first resin structure 10 is embedded in the recess of the retainer 34 and mainly prevents the socket 30 from being detached from the first resin structure 10 in the vertical direction (Y direction). Yes.

  FIG. 6 shows the outer conductor 40. However, FIG. 6 shows the surface of the outer conductor 40 on the side on which the second resin structure 20 is fixed.

  As described above, the outer conductor 40 is manufactured by processing a metal plate.

  The outer conductor 40 is formed with cylindrical portions 41a to 41d for engaging with an outer conductor of another connector (not shown) to make an electrical connection. The cylindrical portions 41a to 41d are divided into four parts with notches provided between them, but they are engaged with the outer conductor of another connector as a whole.

  The outer conductor 40 is formed with four stoppers 42 that are cut and raised to prevent the integrally molded second resin structure 20 from being detached from the outer conductor 40.

  The outer conductor 40 is formed with a pair of plate-shaped caulking portions 43 for fixing the first resin structure 10 integrally molded with the socket 30 by caulking.

  FIG. 7A shows the outer conductor 40 and the second resin structure 20 that are integrally molded. FIG. 7B shows the back side (the side in contact with the external conductor 40) of the second resin structure 20 formed integrally with the external conductor 40.

  The second resin structure 20 has a cross shape in which the vertical structure 21 and the horizontal structure 22 intersect each other.

  The second resin structure 20 is formed with four locking portions 23 that bite into the four retaining holes 42 formed on the outer conductor 40.

  As described above, since the outer conductor 40 and the second resin structure 20 are integrally formed, the relative positional accuracy of the second resin structure 20 with respect to the outer conductor 40 is extremely high. That is, the integral molding is generally performed by housing the outer conductor 40 in a mold (not shown) and then injecting resin into the mold and curing the outer conductor 40. If it can arrange | position and accommodate in a metal mold | die, the relative positional accuracy of the 2nd resin structure 20 with respect to the external conductor 40 will become very high.

  In addition, since the outer resin 40 is provided with four stoppers 42 for preventing the second resin structure 20 from being detached from the outer conductor 40, the second resin structure 20 is connected to the outer conductor 40. Accordingly, the high positional accuracy of the second resin structure 20 with respect to the outer conductor 40 can be maintained over time. The engaging portion 23 of the first resin structure 10 shown in FIG. 7B bites into the stopper 42 of the outer conductor 40, and the second resin structure 20 extends from the outer conductor 40 in the lateral direction (X direction). In the vertical direction (Y direction) and the height direction (Z direction), separation is prevented.

  FIG. 8A shows a state where the integrated socket 30 and the first resin structure 10 are fixed to the integrated external conductor 40 and the second resin structure 20. FIG. 8B shows a state in which the second resin structure 20 is fitted in the recess 14 of the first resin structure 10.

  As shown in FIG. 8B, a cross-shaped second resin structure 20 is fitted in the recess 14 of the cross-shaped first resin structure 10. A slight clearance may be provided between the recess 14 and the second resin structure 20. Alternatively, the second resin structure 20 may be press-fitted into the recess 14 without providing a clearance between the recess 14 and the second resin structure 20. In any case, the first resin structure 10 and the second resin structure 20 are fitted to each other with extremely high positional accuracy.

  As shown in FIG. 8A, both ends of the lateral structure 12 of the first resin structure 10 are locked by a pair of locking pieces 45 formed by cutting out the external conductor 40 in advance, The first resin structure 10 is slid, and the leading end of the vertical structure 11 of the first resin structure 10 is locked to a locking piece 44 formed by cutting out the external conductor 40 in advance.

  In FIG. 8A, the plate-like caulking portion 43 of the outer conductor 40 is not yet caulked. Thereafter, by caulking the pair of plate-shaped caulking portions 43 onto the pair of flanges 15 of the first resin structure 10, the first resin structure 10 integrally formed with the socket 30 becomes the outer conductor 40. It is firmly fixed to.

  A coaxial cable (not shown) is connected to the coaxial connector 100. More specifically, the central conductor of the coaxial cable is connected to the socket 30. In addition, the outer mesh conductor of the coaxial cable is connected to the outer conductor 40.

  The coaxial connector 100 is used by being fitted to another coaxial connector 200 as shown in FIG. 9, for example. More specifically, the center pin 210 of the coaxial connector 200 is inserted into the through hole 31 of the socket 30 of the coaxial connector 100 so that the electrical connection between the socket 30 and the center pin 210 is removed, and the coaxial connector is connected. The four cylindrical portions 41 a to 41 d of the 100 outer conductors 40 are locked to the four locking pieces 221 a to 221 d formed on the outer conductor 220 of the coaxial connector 200, so that the outer conductor 40 and the outer conductor 220 are connected to each other. The electrical connection is peeled off and used.

  The coaxial connector 100 having the above structure has extremely high positional accuracy of the socket 30 with respect to the first resin structure 10. Further, the relative positional accuracy of the second resin structure 20 with respect to the outer conductor 40 is extremely high. The second resin structure 20 is fitted into the recess 14 of the first resin structure 10 with extremely high positional accuracy. As a result, the coaxial connector 100 has extremely high positional accuracy of the socket 30 with respect to the outer conductor 40. That is, the relative positional accuracy of the through hole 31 of the socket 30 with respect to the outer conductor 40 is extremely high. Therefore, for example, when the coaxial connector 100 is to be fitted to the coaxial connector 200 shown in FIG. 9, the position of the through hole 31 and the position of the center pin 210 are exactly the same, and the socket 30 and the center pin 210 are Are securely connected electrically. Further, since the position of the through hole 31 and the position of the center pin 210 do not match, the socket 30 is not damaged.

  In the coaxial connector 100, since the socket 30 is fixed to the first resin structure 10 at both ends, the socket 30 fixed to the first resin structure 10 does not wobble. Therefore, the relative position of the socket 30 with respect to the first resin structure 10, the second resin structure 20, and the external conductor 40 does not vary. That is, the relative position of the through hole 31 of the socket 30 with respect to the first resin structure 10, the second resin structure 20, and the outer conductor 40 does not vary. Therefore, in the coaxial connector 100, the wobbling of the socket 30 does not prevent the center pin 210 from being inserted into the through hole 31 of the socket 30.

  The coaxial connector 100 can be manufactured by a manufacturing method that has been widely used for manufacturing a coaxial connector. Briefly described, it is as follows.

  First, a metal plate such as phosphor bronze, which is a material for the socket 30 and the outer conductor 40, is prepared.

  Next, a punching process, a bending process, a drawing process, a cutting process, a forging process, and the like are appropriately performed on the prepared metal plate to manufacture the socket 30 and the outer conductor 40. These steps are usually performed in a state where the socket 30 and the external conductor 40 are connected to the lead frame, respectively.

  Next, the surfaces of the socket 30 and the outer conductor 40 are plated.

  Next, after preparing a metal mold | die and accommodating the socket 30 in a metal mold | die, resin is inject | poured into the metal mold | die and it hardens | cures and the socket 30 and the 1st resin structure 10 are integrally molded. . Similarly, after housing the outer conductor 40 in the mold, a resin is injected into the mold and cured to integrally mold the outer conductor 40 and the second resin structure 20.

  Next, the socket 30 and the outer conductor 40 are separated from the lead frame.

  Finally, the coaxial connector 100 is completed by fixing the first resin structure 10 integrally molded with the socket 30 to the integrally formed outer conductor 40 and the second resin structure 20.

  The structure of the coaxial connector 100 according to the embodiment and an example of the manufacturing method have been described above. However, the present invention is not limited to the contents described above, and various modifications can be made in accordance with the spirit of the invention.

  For example, in the coaxial connector 100, the first resin structure 10 has a cross shape, but the shape of the first resin structure 10 is arbitrary and may be other shapes.

  Further, in the coaxial connector 100, the second resin structure 20 is fixed to the outer conductor 40. However, the second resin structure 20 is not an indispensable component, and the first molded integrally with the socket 30 on the outer conductor 40. If the resin structure 10 can be fixed with accurate position accuracy, the second resin structure 20 may be omitted.

  Further, in the coaxial connector 100, the first resin structure 10 integrally molded with the socket 30 is fixed to the outer conductor 40 by caulking, but the shape of the portion to which the first resin structure 10 of the outer conductor 40 is attached in advance. The first resin structure 10 that is integrally formed with the socket 30 may be fixed to the external conductor 40 by press-fitting.

DESCRIPTION OF SYMBOLS 10 ... 1st resin structure 11 ... Vertical structure 12 ... Horizontal structure 13 ... Through-hole 14 ... Recess 15 ... Flange 20 ... 2nd resin structure 21. ..Vertical structure 22 ... Horizontal structure 23 ... Locking portion 30 ... Socket 31 ... Through hole 32 ... Cutting contact 33-35 ... Retaining 40 ... External Conductors 41a to 41d ... cylindrical portion 42 ... retaining stopper 43 ... plate-like caulking portion 44, 45 ... locking piece

Claims (12)

An outer conductor,
A coaxial connector having a socket,
Furthermore, a first resin structure is provided,
The socket is fixed at both ends to the first resin structure;
A coaxial connector in which the first resin structure is fixed to the outer conductor.   The coaxial connector according to claim 1, wherein the first resin structure and the socket are inseparably integrated.   The coaxial connector according to claim 1, wherein the socket is formed with a stopper from the first resin structure.   4. The coaxial connector according to claim 3, wherein the retaining member comprises at least one of a retaining member in the vertical direction, a retaining member in the horizontal direction, and a retaining member in the height direction.   The coaxial connector according to claim 1, wherein the first resin structure has a cross shape.   The coaxial connector according to any one of claims 1 to 5, wherein the first resin structure is fixed to the outer conductor by caulking.   The coaxial connector according to any one of claims 1 to 5, wherein the first resin structure is fixed to the outer conductor by press-fitting. Furthermore, a second resin structure is provided,
The second resin structure is fixed to the outer conductor;
The first resin structure includes a recess;
The coaxial connector according to any one of claims 1 to 7, wherein the second resin structure is fitted into the recess of the first resin structure.   The coaxial connector according to claim 8, wherein the outer conductor and the second resin structure are inseparably integrated.   The coaxial connector according to claim 8 or 9, wherein the second resin structure is press-fitted into the concave portion of the first resin structure.   The coaxial connector according to any one of claims 8 to 10, wherein the outer conductor is formed with a stopper for the second resin structure. 12. The coaxial connector according to claim 8, wherein each of the concave portion of the first resin structure and the second resin structure has a cross shape.

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