JP2017152196A - Terminal connection structure and electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal connection structure for an electric connector capable of reducing the cost of manufacture while improving connection stability regarding a connection of pin-shaped terminals.SOLUTION: The present invention relates to a terminal connection structure configured to fit and connect pin-shaped two terminals with each other. In the terminal connection structure, distal end portions 411 and 611 of any one of the two terminals comprise connection holes 413 and 613 formed from: contact parts 412 and 612 in which distal end portions 211a and 211b of the other terminal can be inserted in slide contact and which have such an inner surface shape that at least one point of the distal end portions 211a and 211b of the other terminal is brought into contact in a fitted and connected state; and bottomed cavity parts 415 and 615 which are positioned adjacently in directions C and D axially inside of one terminal rather than the contact parts 412 and 612 and have such an inner surface shape that the distal end portions 211a and 211b of the other terminal cannot be inserted. The contact parts 412 and 612 have a depth dimension E with which only the distal end portions 211a and 211b of the other terminal are accommodated in the fitted and connected state.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a terminal connection structure for connecting between substrates of electric devices and electronic devices, and an electrical connector using the terminal connection structure.

  2. Description of the Related Art Conventionally, as an electrical connector for connecting substrates, an electrical connector that conducts between substrates by bringing a pin-shaped terminal and a socket-shaped terminal into contact with each other has been proposed (for example, see Patent Document 1).

  In the electrical connector as described above, by forming an elastic piece that is elastically deformed so that the pin-shaped terminal can be held in the socket-shaped terminal, poor conduction due to the displacement of the pin-shaped terminal is suppressed.

European Patent No. 2304852

  However, in the electrical connector as described above, since the pin-shaped terminals are held by the elastic pieces formed on the socket-shaped terminals, the connection stability between the terminals is improved, but an operation process for forming the elastic pieces is necessary. There is a problem that the manufacturing cost becomes high.

  In order to reduce the work process as described above, a method of connecting pin-shaped terminals is also conceivable, but when connecting pin-shaped terminals, the terminals come into contact with each other at the tip of the terminal. There is a possibility that a stable connection cannot be obtained, for example, a connection failure may occur due to the adhered matter.

  Accordingly, the problem to be solved by the present invention relates to the connection between pin-shaped terminals, a terminal connection structure capable of reducing the manufacturing cost while improving the connection stability and the electric power using this terminal connection structure To provide a connector.

  In order to achieve the above object, a terminal connection structure of the present invention is a terminal connection structure in which two terminals having a pin shape are fitted and connected to each other, and a tip portion of one of the two terminals In addition, the contact portion can be inserted while being slidably contacted with the tip portion of the other terminal, and has an inner surface shape that contacts at least one point of the tip portion of the other terminal in the fitted connection state, and more than the contact portion. A contact hole that is located adjacent to the inner side in the axial direction of one of the terminals and has a bottomed cavity with an inner surface that cannot be inserted into the tip of the other terminal; It has a depth dimension in which only the tip portion of the other terminal is accommodated in the fitted connection state.

  In the above terminal connection structure, since two pins having a pin shape are connected to each other, it is not necessary to form an elastic piece for holding the terminal as compared with the case where the pin-shaped terminal is held by the socket-shaped terminal. Therefore, since the number of work steps can be reduced, the manufacturing cost can be reduced.

  In addition, since the contact portion having an inner surface shape that can be inserted into the tip portion of one of the two terminals while sliding the tip portion of the other terminal in contact with at least one point is formed. Misalignment can be suppressed.

  However, when two terminals having a pin shape are connected to each other, the other terminal comes into contact with one terminal at one point.

  Therefore, the other terminal slid by forming a bottomed cavity having an inner surface shape that is positioned adjacent to the inner side in the axial direction of one terminal from the contact part and into which the tip of the other terminal cannot be inserted. At this time, deposits adhering to the tip portion are collected in the bottomed cavity to enhance the connection stability between the terminals.

  Therefore, it is possible to provide a terminal connection structure capable of reducing the manufacturing cost while improving the connection stability.

  Further, the contact portion is in contact with at least one point of the tip portion of the other terminal in the fitted connection state due to an inner surface shape inclined from the opening portion into which the other terminal is inserted to the bottomed cavity portion. For this reason, it is possible to reduce the displacement from the fitting connection position and to guide the insertion of the tip portion to a position where at least one point in the vicinity of the bottomed cavity portion is in contact.

  The electronic connector according to the present invention is an electrical connector for connecting two substrates, the fixed connector and the movable connector mounted on each of the two substrates, the fixed connector and the movable connector. An intermediate adapter that detachably fits and connects, the intermediate adapter has first terminals having pin shapes at both ends, and the fixed connector is connected to one end of the first terminal. And the movable connector has a third terminal having a pin shape to which the other end of the first terminal is connected, and the second terminal and the third terminal. An inner surface shape in which at least one point of the front end portion of the first terminal can be in contact with the front end portion of the first terminal in the fitted connection state. Contact And a bottomed cavity portion that is located adjacent to the inner side in the axial direction of the at least one terminal with respect to the contact portion, and has a bottomed cavity portion into which the tip portion of the first terminal cannot be inserted. The contact portion has a depth dimension in which only the tip end portion of the first terminal is accommodated in the fitted connection state.

  The above electronic connector connects the first terminal having the pin shape and the second terminal and / or the third terminal having the pin shape, and therefore has a pin shape as compared with the case where the pin shape terminal is held by the socket shape terminal. There is no need to form an elastic piece for holding the terminal. Therefore, since the number of work steps can be reduced, the manufacturing cost can be reduced.

  Moreover, since the contact portion having an inner surface shape that can be inserted into the tip portion of at least one of the second terminals and the third terminal while sliding the tip portion of the first terminal and that contacts at least one point, is formed. A positional deviation from the fitting connection position can be suppressed.

  Furthermore, by forming a bottomed cavity portion that is located adjacent to the inner side in the axial direction of the second terminal and / or the third terminal with respect to the contact portion and has an inner surface shape into which the tip portion of the first terminal cannot be inserted, It is possible to improve the connection stability between the first terminal, the second terminal, and / or the third terminal by collecting deposits attached to the tip portion when one terminal slides in the bottomed cavity.

  Therefore, it is possible to provide an electrical connector capable of reducing the manufacturing cost while improving the connection stability.

  Further, the contact portion is in contact with at least one point of the distal end portion of the first terminal in the fitted connection state due to an inner surface shape inclined from the opening portion of the connection hole to the bottomed cavity portion. For this reason, it is possible to reduce the displacement from the fitting connection position and to guide the insertion of the tip portion to a position where at least one point in the vicinity of the bottomed cavity portion is in contact.

  Furthermore, the intermediate adapter has a first insulator that holds the first terminal and a first shell that covers the first insulator, and the fixed connector has a second insulation that holds the second terminal. And a second shell that covers the second insulator, and the movable connector has a third insulator that holds the third terminal, and a third shell that covers the third insulator, It is possible to prevent deterioration of electrical characteristics by preventing leakage of electromagnetic waves generated from each terminal and intrusion of noise from the outside. Further, the outer conductor of the substrate and the shell can be electrically connected by the shell covering the insulator.

  In addition, the first insulator is divided into two parts, an insulating part that holds one end side of the first terminal and an insulating part that holds the other end side of the first terminal. Insulating the contact portions of the first terminal and the second terminal, and the first terminal and the third terminal, respectively, and reducing the manufacturing cost of the insulator by dividing into two parts.

  Furthermore, when the fixed connector or the movable connector is fitted to the intermediate adapter, it is bent and deformed until it is in a fitted connection state, and when it is in the fitted and connected state, the elastic part that elastically returns to the bent deformation, Since it further includes an abutting portion with which the elastic portion abuts when in the mating connection state, it is possible to easily confirm whether or not the worker performing the mating operation is in a normal mating connection state.

  In addition, since the elastic piece comes into contact with the abutting portion when a normal mating connection state is reached, whether or not the normal mating connection state is reached by giving a feeling of moderation (click feeling) to the worker who performs the mating work. Can be easily confirmed.

  Thus, according to the present invention, it is possible to provide a terminal connection structure and an electrical connector that can reduce the manufacturing cost while improving the connection stability with respect to the connection between the pin-shaped terminals.

It is a disassembled perspective view which shows the electrical connector which concerns on this embodiment. (A) Sectional view of the intermediate connector shown in FIG. 1, (b) A perspective view from the left side of the adapter insulator shown in (a), (c) A perspective view from the right side of the adapter insulator shown in (a). . FIG. 3A is a side view of the intermediate contact shown in FIG. 2A, and FIG. 3B is a schematic sectional view of the intermediate contact and adapter terminal shown in FIG. (A) It is a perspective view of the adapter shell shown in FIG. 1, (A) It is AA sectional drawing shown in (a). (A) A perspective view of the adapter ring shown in FIG. 1, (b) a plan view of the adapter ring shown in (a), (c) a side view of the adapter ring shown in (a), and B shown in (d) and (b). It is -B sectional drawing. (A) Perspective view of fixed side connector shown in FIG. 1, (b) Plan view of fixed side connector shown in (a), CC sectional view shown in (c) and (b), (d) (a) It is a rear view of the fixed side connector shown, and is a perspective view of the fixed side insulator shown to (e) and (c). (A) Perspective view of movable connector shown in FIG. 1, (b) Plan view of movable connector shown in (a), DD sectional view shown in (c) and (b), (d) (a) It is a rear view of the movable connector shown, and is a perspective view of the movable insulator shown in (e) and (c). (A) Schematic sectional view showing the terminal connection structure of the electrical connector shown in FIG. 1, (b) Schematic sectional view showing a state where the adapter terminal shown in FIG. 1 is in contact with the fixed terminal, (c) Adapter terminal shown in FIG. It is a schematic sectional drawing which shows the state which inserted in the fixed side connection hole. (A) It is a schematic sectional drawing of the electrical connector shown in FIG. 1, (b) It is a schematic sectional drawing which shows the state which fits the intermediate | middle adapter shown to (a) to a movable side connector. (A) It is a perspective view which shows the fitting state of the electrical connector shown in FIG. 1, (b) It is a schematic sectional drawing of the electrical connector shown in (a).

  Hereinafter, a terminal connection structure and an electrical connector according to an embodiment of the present invention will be described with reference to the drawings.

[1. Schematic configuration of electrical connector]
First, the configuration of the electrical connector according to the present embodiment will be described with reference to FIG. In the following embodiment, a case will be described in which the electrical connector is a connector that conducts and connects between two spaced apart substrates (not shown).

  As shown in FIG. 1, the electrical connector 1 includes an intermediate adapter 12 having a substantially cylindrical shape, a fixed connector 14 mounted on one board, and a movable side mounted on the other board spaced from the one board. The connector 16 is substantially constituted.

  The electrical connector 1 configured as described above is configured such that after one side of the intermediate adapter 12 is fitted to the fixed side connector 14, the other side of the intermediate adapter 12 is fitted to the movable side connector 16. 14 and the movable connector 16 are connected so as to be conductive.

[2. Intermediate adapter configuration]
Next, the configuration of the intermediate adapter 12 will be described with reference to FIGS. As shown in FIGS. 1 and 2A, the intermediate adapter 12 includes an adapter terminal (first terminal) 21 having a pin shape, an intermediate contact 22 to which the adapter terminal 21 is connected at both ends, an adapter terminal 21, An adapter main body 23 covering the intermediate contact 22 is substantially configured.

  As shown in FIG. 3B, the adapter terminal 21 includes one side adapter terminal 21 a connected to one end side intermediate contact 22 a of the intermediate contact 22, and the other end connected to the other end side intermediate contact 22 b of the intermediate contact 22. A side adapter terminal 21b is provided.

  The one-side adapter terminal 21a and the other-side adapter terminal 21b are formed in a pin shape having a diameter of about 1 mm by cutting a metal such as brass, beryllium copper, or phosphor bronze. That is, the one-side adapter terminal 21a and the other-side adapter terminal 21b are formed in the same pin shape.

  When the intermediate adapter 12, the fixed side connector 14, and the movable side connector 16 are in the fitted connection state, the tip end portion 211a of the one side adapter terminal 21a shown in FIG. The tip portion 211b of the other adapter terminal 21b shown in FIG. 2A is in contact with the terminal 41 and the movable terminal 61 of the movable connector 16 described later.

  As shown in FIGS. 3A and 3B, the intermediate contact 22 has a substantially cylindrical shape, and has a spring 221 inside the substantially cylindrical shape. The one-side adapter terminal 21a and the other-side adapter terminal 21b are connected to both ends of the spring 221.

  When the spring 221 is fitted and connected to the intermediate adapter 12, the fixed connector 14, and the movable connector 16, the direction of the arrows A and B shown in FIG. When pressed from the fitting direction A and the fitting direction B), the distance W between the one-side adapter terminal 21a and the other-side adapter terminal 21b can be freely changed by bending and deforming.

  Further, as shown in FIGS. 3A and 3B, the intermediate contact 22 is located near the one end side intermediate contact 22a and the other end side intermediate contact 22b and outward from the outer peripheral surface of the intermediate contact 22. The inner periphery where the outer peripheral protrusion 222 that protrudes and the outer peripheral surface of the one end side intermediate contact 22a and the other end side intermediate contact 22b abut on the intermediate contact end contact portion 232 that is the inner peripheral surface of the adapter insulator 231 described later. Contact portions 223 are formed respectively.

  The outer peripheral protrusion 222 is on the side of the fitting direction A and the fitting direction B in which the fixed connector 14 and the movable connector 16 are fitted and connected, and is a part of the side surface of the adapter insulator 231 described later. Side contact portions 224 with which the protruding portion contact portions 233 come into contact are formed.

  As shown in FIGS. 1 and 2, the adapter main body 23 has a substantially cylindrical shape, and is located on the outer periphery of the one-side adapter terminal 21a or the other-side adapter terminal 21b, and the one-side adapter terminal 21a and the other-side adapter terminal. Adapter insulators (first insulators) 231 each holding 21b, an adapter shell (first shell) 241 having a substantially cylindrical shape covering the adapter insulators 231, and an adapter ring provided on the outer periphery of the adapter shell 241 (Elastic part) 251.

  The adapter insulator 231 (one-side adapter insulator 231a, other-side adapter insulator 231b) is formed of an insulating resin such as a fluororesin, and as shown in FIG. The one-side adapter insulator 231a that is held together with the intermediate contact 22 and the other-side adapter insulator 231b that holds the other-side adapter terminal 21b together with the intermediate contact 22 are divided into two parts.

  As shown in FIG. 2B and FIG. 2C, the one-side adapter insulator 231a and the other-side adapter insulator 231b have a substantially cylindrical shape. Since the one-side adapter insulator 231a and the other-side adapter insulator 231b have the same shape, in FIG. 2B and FIG. 2C, the one-side adapter insulator 231a and the other-side adapter insulator 231b are replaced with each other. The adapter insulator 231 is illustrated and described.

  The one-side adapter insulator 231a and the other-side adapter insulator 231b include an inner contact end contact portion 232 that is an inner peripheral surface of the adapter insulator 231 and contacts the inner peripheral contact portion 223 described above, and adapter insulation. A projecting portion abutting portion 233 that is a part of the side surface of the body 231 and abuts on the side surface abutting portion 224 described above, an insulator concave portion 234 that engages with a shell convex portion 243 of the adapter shell 241 described later, and a fixed side A connector insertion portion 235 into which a part of the connector 14 or the movable connector 16 is inserted is formed.

  The intermediate contact end contact portion 232 is in contact with the inner peripheral contact portion 223 (see FIG. 3B) located on the inner peripheral surface, so that the adapter insulator 231 is positioned on the inner side in the axial direction of the adapter terminal 21 ( The movement in the direction of arrow C and arrow D in FIG.

  The projecting portion abutting portion 233 abuts on the side surface abutting portion 224 (see FIG. 3B), so that the adapter insulator 231 has the axial direction of the adapter terminal 21 (the fitting direction A in FIG. The movement to the direction B) is suppressed.

  The insulator recesses 234 are respectively formed on the outer peripheral surfaces of the one-side adapter insulator 231a and the other-side adapter insulator 231b, and are formed so that a shell projection 243 of the adapter shell 241 to be described later can be inserted.

  The connector insertion part 235 is a movable part that holds a part of the fixed side terminal 41 and a part of the fixed side insulator 422 that holds the fixed side terminal 41, or a part of the movable side terminal 61 that holds the movable side terminal 61. A part of the side insulator 622 is inserted.

  In the one-side adapter insulator 231a and the other-side adapter insulator 231b configured as described above, the intermediate contact end contact portion 232 contacts the inner peripheral contact portion 223 and the intermediate contact 22 and the one-side adapter terminal 21a Or the other side adapter terminal 21b is hold | maintained and a connector insertion part is located in the outer periphery of the one side adapter terminal 21a or the other side adapter terminal 21b.

  The adapter shell 241 is made of metal such as brass, beryllium copper, phosphor bronze, etc. As shown in FIGS. 4A and 4B, the shell intermediate portion 241a, the one-side shell end portion 241b, and others. The side shell end 241c has a step shape that changes stepwise. That is, the one-side shell end 241b and the other-side shell end 241c have a concave shape that is recessed from the shell intermediate portion 241a.

  As shown in FIGS. 4A and 4B, the adapter shell 241 includes an end-side ring contact portion 242a with which a ring end portion 254 of an adapter ring 251 to be described later contacts, and an elastic piece to be described later. An intermediate ring contact portion 242b where the tip of 253 is located and a shell convex portion 243 to be inserted into the insulator concave portion 234, respectively.

  The shell convex portion 243 has a convex shape protruding on the inner peripheral surface of the adapter shell 241. And it suppresses that the adapter insulator 231 moves to the axial direction (fitting direction A or fitting direction B of FIG. 3) of the adapter terminal 21 by inserting the shell convex part 243 in the insulator concave part 234 mentioned above. To do.

  As shown in FIG. 2A, the adapter ring includes a one-side adapter ring 251a provided on the outer periphery of the one-side shell end 241b and an other-side adapter ring 251b provided on the outer periphery of the other-side shell end 241c. It is configured.

  As shown in FIGS. 5A to 5D, the one-side adapter ring 251a and the other-side adapter ring 251b are formed integrally with the ring portion 252 and the ring portion 252 having a substantially C-shaped shape. And an elastic piece 253 that can be bent and deformed toward the adapter shell 241 together with the ring portion 252.

  Since the adapter ring 251a and the adapter ring 251b have the same shape, the adapter ring 251a and the adapter ring 251b are illustrated and described as the adapter ring 251 in FIGS. 5 (a) to 5 (d).

  The ring portion 252 has a shape in which a part of the annular shape is opened (see FIG. 5B), and is located on the outer periphery of the one-side shell end portion 241b or the other-side shell end portion 241c. It has a ring end portion 254 that contacts the ring contact portion 242a.

  The ring end 254 is in contact with the above-described end side ring contact portion 242a, so that when the intermediate adapter 12, the fixed side connector 14, and the movable side connector 16 are fitted, the ring portion 252 is the axis of the adapter terminal 21. The movement in the direction (fitting direction A or fitting direction B in FIG. 3) is suppressed.

  The elastic pieces 253 are integrally formed with the ring portion 252 at three positions with a predetermined interval. The elastic piece 253 is located on the outer periphery of the one-side shell end 241b and the other-side shell end 241c (see FIG. 2A).

  Since the ring portion 252 has a shape in which a part of the annular shape is opened as described above, and the elastic pieces 253 are provided at intervals, the ring portion 252 can be bent and deformed toward the adapter shell 241 side. Is possible. Specifically, when the intermediate adapter 12 is fitted to the fixed connector 14, one side ring edge 252 a of the ring part 252 is pressed by the fixed side locking part 427 described later, and is bent and deformed together with the elastic piece 253. When the side locking portion 427 is overcome, the other ring edge 252b and the fixed side locking portion 427 are locked by returning to the bending deformation. Details of the locking mechanism between the ring portion 252 and the fixed-side locking portion 427 will be described later.

  As described above, since adapter rings 251a and 251b have the same shape, they can be molded using the same mold.

[3. Fixed side connector configuration]
Next, the configuration of the fixed connector 14 will be described with reference to FIG. As shown in FIGS. 6A to 6E, the fixed connector 14 includes a fixed terminal (second terminal) 41 having a pin shape and a fixed connector body 42 covering the fixed terminal 41. It is roughly structured.

  The fixed side terminal 41 is formed in a pin shape by cutting a metal such as brass, beryllium copper, phosphor bronze or the like. The fixed terminal 41 is formed in the same shape as a movable terminal 61 described later.

  Further, as shown in FIG. 6C, the fixed side terminal 41 is formed with a fixed side connection hole (connection hole) 411 into which the one-side adapter terminal 21a is inserted.

  Furthermore, the fixed-side terminal 41 cannot be inserted with the fixed-side guide portion (contact portion) 413 that guides the tip portion 211a of the one-side adapter terminal 21a and the tip portion 211a of the one-side adapter terminal 21a. A fixed-side bottomed cavity 414 is formed. The detailed configuration of the fixed terminal 41 will be described later.

  As shown in FIGS. 6A to 6D, the fixed-side connector main body 42 is formed integrally with the fixed-side adapter connecting portion 421 into which the intermediate adapter 12 is fitted and the fixed-side adapter connecting portion 421. The fixed side base 431 has a substantially rectangular parallelepiped shape.

  As shown in FIGS. 6A to 6E, the fixed-side adapter connection portion 421 has a substantially cylindrical shape and is positioned on the outer periphery of the fixed-side terminal 41 to hold the fixed-side terminal 41. 422 and a fixed-side shell 423 that has a substantially cylindrical shape and covers the fixed-side insulator 422.

  The fixed insulator 422 is formed of an insulating resin such as a fluororesin as with the adapter insulator 231. As shown in FIG. 6E, the fixed-side insulator 422 includes a fixed-side terminal abutting portion 424 where the fixed-side terminal 41 abuts on the inner peripheral surface, and a fixed-side shell contact where the fixed-side shell 423 abuts. A contact portion 425 and a fixed-side convex contact portion 426 with which a fixed-side shell convex portion 428 described later contacts are formed.

  The fixed side shell 423 is formed of a metal such as brass, beryllium copper, phosphor bronze, etc., like the adapter shell 241. The fixed-side shell 423 is formed with a fixed-side locking portion 427 protruding inward and a fixed-side shell convex portion 428 with which the above-described fixed-side convex portion abutting portion 426 abuts.

  The other-side ring edge 252b described above is locked to the fixed-side locking portion 427. Specifically, when the intermediate adapter 12 is fitted to the fixed-side connector 14, the ring portion 252 is bent and deformed from the one-side ring edge portion 252a to the other-side ring edge portion 252b. The other side ring edge 252b is locked over the portion 427. Details of the locking mechanism between the ring portion 252 and the fixed-side locking portion 427 will be described later.

  The fixed-side shell convex portion 428 is in contact with the above-described fixed-side convex portion abutting portion 426, so that when the intermediate adapter 12 is fitted to the fixed-side connector 14, the fixed-side insulator 422 becomes the axis of the adapter terminal 21. The movement in the direction (the fitting direction A in FIG. 6C) is suppressed.

  At the four corners of the fixed side base portion 431, fixed side substrate connection portions 432 having a substantially rectangular parallelepiped shape are formed. The fixed-side board connecting portion 432 is connected to an external conductor of the board (not shown) by soldering.

[4. Structure of movable connector]
Next, the configuration of the movable connector 16 will be described with reference to FIG. As shown in FIGS. 7A to 7E, the movable connector 16 includes a movable terminal (third terminal) 61 having a pin shape and a movable connector body 62 covering the movable terminal 61. It is roughly structured.

  The movable terminal 61 is formed into a pin shape by cutting a metal such as brass, beryllium copper, phosphor bronze, etc., like the fixed terminal 41. The movable terminal 61 is formed in the same shape as the fixed terminal 41 as described above.

  Moreover, as shown in FIG.7 (c), the movable side terminal 61 has the movable side connection hole (connection hole) 611 in which the other side adapter terminal 21b is inserted.

  Further, the movable side terminal 61 cannot be inserted with the movable side guide portion (contact portion) 613 for guiding the distal end portion 211b of the other side adapter terminal 21b to the movable side distal end portion 612 and the distal end portion 211b of the other side adapter terminal 21b. A movable bottomed cavity 614 is formed. The detailed configuration of the movable terminal 61 will be described later.

  As shown in FIGS. 7A to 7D, the movable connector main body 62 is formed integrally with the movable adapter connecting portion 621 into which the intermediate adapter 12 is fitted and the movable adapter connecting portion 621. The movable side base 631 has a substantially rectangular parallelepiped shape.

  As shown in FIGS. 7A to 7E, the movable-side adapter connecting portion 621 is located on the outer periphery of the movable terminal 61 having a substantially cylindrical shape and holds the movable-side terminal 61. And a movable-side shell 623 that covers the movable-side insulator 622 without a substantially cylindrical shape.

  The movable insulator 623 is formed of an insulating resin such as a fluororesin, like the adapter insulator 231 and the fixed insulator 422. As shown in FIG. 7E, the movable-side insulator 622 includes a movable-side terminal abutting portion 624 that abuts the movable-side terminal 61 on the inner peripheral surface, and a movable-side shell contact that a movable-side shell 623 abuts on. It has a contact portion 625 and a movable-side convex portion abutting portion 626 with which a movable-side shell convex portion 628 described later abuts.

  The movable side shell 623 is formed of a metal such as brass, beryllium copper, phosphor bronze or the like, like the adapter shell 241 and the fixed side shell 423, and as shown in FIG. A movable terminal contact portion 624 that contacts the movable shell, a movable shell contact portion 625 that contacts the movable shell 623, and a movable convex contact portion 626 that contacts a movable shell convex portion 628 described later are formed. Has been.

  The movable shell 623 is formed of a metal such as brass, beryllium copper, phosphor bronze, etc., like the adapter shell 241 and the fixed shell 423. The movable side shell 623 is provided with a movable side shell convex portion 628 with which the above-described movable side convex portion abutting portion 626 abuts.

  The movable-side shell convex portion 628 is in contact with the movable-side convex portion abutting portion 626 described above, so that the movable-side insulator 622 is connected to the axis of the adapter terminal 21 when the intermediate adapter 12 is fitted to the movable-side connector 16. The movement in the direction (the fitting direction B in FIG. 7C) is suppressed.

  At the four corners of the movable side base 631, movable side substrate connecting portions 632 having a substantially rectangular parallelepiped shape are formed. The movable board connecting portion 632 is connected to an outer conductor of the board (not shown) by soldering.

[5. Terminal connection structure]
Next, with reference to FIG. 8A to FIG. 8C, a terminal connection structure for fitting and connecting the terminals having the pin shape described above will be described. In addition, the following connection structure is a terminal connection structure which connects pin-shaped terminals, and demonstrates the case where pin-shaped terminals about 2 mm in diameter are connected.

  In addition, since the above-described one-side adapter terminal 21a and the other-side adapter terminal 21b have the same shape, and the above-described fixed-side terminal 41 and the movable-side terminal 61 have the same shape, the one-side adapter terminal 21a and the fixed side will be described below. A connection structure of the terminal 41 will be described with reference to the drawings.

  The tip portion 211 of the one-side adapter terminal 21a has a substantially hemispherical shape. The fixed-side terminal 41 to which the one-side adapter terminal 21a is connected is formed with a fixed-side connection hole 411 into which the one-side adapter terminal 21a is inserted.

  Further, the fixed-side terminal 41 cannot receive the fixed-side guide portion (contact portion) 413 that guides the tip portion 211a of the one-side adapter terminal 21a and the tip portion 211a of the one-side adapter terminal 21a into the fixed-side tip portion 412. A fixed-side bottomed cavity 414 is formed.

  The fixed-side guide part 413 can be inserted while sliding the tip part 211a of the one-side adapter terminal 21a, and at least the tip-part part 211a of the one-side adapter terminal 21a when the intermediate adapter 12 and the fixed-side connector 14 are fitted and connected. It has an inner surface shape that contacts one point. In this embodiment, as an inner surface shape at which at least one point is in contact, a case where the fixed side guide portion 413 is an inner surface shape inclined from the opening portion 411a of the connection hole 411 to the fixed side bottomed cavity portion 414 will be described.

  As described above, the distal end portion 211 of the adapter terminal 21 has a substantially hemispherical shape, and the fixed-side terminal 41 has an inner surface shape on which the fixed-side guide portion 413 is formed. Therefore, FIG. 8B and FIG. ), The tip end portion 211a can come into contact with the fixed terminal 41 at at least one point.

  Further, as described above, since the tip end portion 211 of the adapter terminal 21 can contact at least one point with the fixed terminal 41, the connection stability between the adapter terminal 21a and the fixed terminal 41 can be improved. it can.

  Further, the fixed-side guide portion 413 is inclined from the opening 411a into which the one-side adapter terminal 21a is inserted to the fixed-side bottomed cavity portion 414, and the intermediate adapter 12 and the fixed-side connector 14 are fitted and connected to one side. The tip portion 211a is guided to a position where at least one point of the tip portion 211a of the adapter terminal 21a contacts. Here, the fixed guide portion 413 can be in contact with at least one point of the tip portion 211a at any position, but the guide to the position where at least one point is in contact is shown in FIGS. 8B and 8C. ), The distal end portion 211a of the one-side adapter terminal 21a is inserted to the vicinity of the fixed-side bottomed cavity portion 414 due to the inclination of the fixed-side guide portion 413 and is a guide to a position in contact with the fixed-side guide portion 413. Is desirable.

  The fixed-side bottomed cavity 414 is located adjacent to the inner side in the axial direction of the one-side adapter terminal 21a (the direction of the arrow C and the arrow D in FIG. 8A) than the fixed-side guide 413, and the one-side adapter The tip 21a of the terminal 21a has an inner surface shape that cannot be inserted. That is, as shown in FIG. 8A, the width W1 of the one-side adapter terminal 21a is larger than the width W2 of the fixed-side bottomed cavity 414 and narrower than the width W3 of the fixed-side connection hole 411. The side adapter terminal 21a and the fixed side terminal 41 are formed (W2 <W1 <W3). Therefore, the substantially hemispherical tip portion 211a can be inserted from the opening 411a of the fixed-side connection hole 411 to the vicinity of the fixed-side bottomed cavity 414 while sliding.

  Further, since the width W1 of the one-side adapter terminal 21a is larger than the width W2 of the fixed-side bottomed cavity 414 and narrower than the width W3 of the fixed-side connection hole 411, the one-side adapter terminal 21a is Deposits attached to the tip end portion 211 when sliding are collected in the fixed-side bottomed cavity 414, and the connection stability between the one-side adapter terminal 21a and the fixed-side terminal 41 can be further enhanced.

  Then, when the intermediate adapter 12 and the fixed connector 14 are fitted to form a fitting connection state, only the tip portion 211a is accommodated in the fixed connection hole 411 as shown in FIG. That is, the fixed-side connection hole 411 has a depth dimension E in which the edge portion 211 of the distal end portion 211 is accommodated in the fitted connection state.

  As described above, since the fixed-side connection hole 411 has a depth dimension E in which only the tip portion 211a is accommodated, the tip portion 211a is fixed to the fixed-side connection hole 411 when the one-side adapter terminal 21a slides. Can be prevented from coming off.

  In the terminal connection structure of the other-side adapter terminal 21b and the movable-side terminal 61, the “one-side adapter terminal 21a”, “the tip portion 211a of the one-side adapter terminal 21a”, “the fixed-side terminal 41”, “the fixed-side” Connection holes 411 ”,“ openings 411a of the fixed-side connection holes 411 ”,“ fixed-side tip portions 412 ”,“ fixed-side guide portions 413 ”, and“ fixed-side bottomed hollow portions 414 ”are designated as“ other sides ” “Adapter terminal 21b”, “tip portion 211b of other side adapter terminal 21b”, “movable side terminal 61”, “movable side connection hole 611”, “opening portion 611a of movable side connection hole 611”, “movable side tip portion 612” ”,“ Movable side guide portion 613 ”, and“ movable side bottomed cavity portion 614 ”, respectively.

[6. Assembly and mating connection of electrical connector]
Next, the fitting connection of the electrical connector 1 will be described with reference to FIGS. First, the spring 221 is positioned inside the intermediate contact 22, and the one-side adapter terminal 21a and the other-side adapter terminal 21b are connected to both ends of the spring 221 (see FIG. 3B).

  Next, the one-side adapter insulator 231a is positioned on the outer periphery of the one-side adapter terminal 21a, the other-side adapter insulator 231b is positioned on the outer periphery of the other-side adapter terminal 21b, and the one-side adapter terminal 21a or the other-side adapter terminal 21b is Hold (see FIG. 3B).

  Further, the adapter shell 241 is positioned on the outer periphery of the adapter insulator 231 to cover the adapter insulator 231. Further, the intermediate adapter 12 is assembled by positioning the one-side adapter ring 223a on the outer periphery of the one-side shell end 241b of the adapter shell 241 and the other-side adapter ring 223b on the outer periphery of the other-side shell end 241c (FIG. 2A). reference).

  In assembling the solid-side connector 14, first, the fixed-side insulator 422 is positioned on the outer periphery of the fixed-side terminal 41 to hold the fixed-side terminal 41. Further, the fixed-side shell 423 is positioned on the outer periphery of the fixed-side insulator 422 so as to cover the fixed-side insulator 422. The solid-side connector 14 assembled in this way is mounted on the substrate by soldering the fixed-side substrate connecting portion 432 to an external conductor of the substrate (not shown).

  In assembling the movable side connector 16, first, the movable side insulator 622 is positioned on the outer periphery of the movable side terminal 61 to hold the movable side terminal 61. The movable shell 623 is positioned on the outer periphery of the movable insulator 622 to cover the movable insulator 622. The movable connector 16 assembled in this way is mounted on the substrate by soldering the movable substrate connecting portion 632 to an external conductor of the substrate (not shown).

  In the fitting connection between the fixed connector 14 and the movable connector 16 mounted on the substrate and the intermediate adapter 12, first, one side of the intermediate adapter 12 is fitted to the fixed connector 14. In the fitting to the fixed side connector 14, first, the one side ring edge 252 a (see FIG. 5) of the ring part 252 is pressed against the fixed side locking part 427.

  When the one-side ring edge portion 252a is pressed, the ring portion 252 is bent and deformed inward in the axial direction (the arrow C direction and the arrow D direction in FIG. 8A) together with the elastic piece 253 (see FIG. 5). When the fixed connector 14 is properly fitted and connected to the intermediate adapter 12, the fixed ring engagement portion 427 is overcome and the bending deformation is restored, whereby the other ring edge portion 252b and the fixed lock portion are fixed. 427 is locked (see FIG. 10B). In this manner, one side of the intermediate adapter 12 is inserted into the fixed adapter connection portion 421 and the intermediate adapter 12 and the fixed connector 14 are fitted.

  Further, as described above, since the fixed side guide 41 is formed with the fixed side guide portion 413, the one side shell end 241b (see FIG. 8) is connected to the fixed side adapter while slidingly contacting the one side adapter terminal 21a. It can be inserted into the part 421.

  Then, the ring operator 252 and the elastic piece 253 are bent and deformed, and the operator who performs the fitting operation is in a normal fitting connection state by the locking mechanism that locks when the ring portion 252 gets over the fixed side locking portion 427. It can be easily confirmed whether or not.

  In addition, when a normal fitting connection state is established, the bending deformation of the other ring edge portion 252b is restored, so that a locking mechanism that contacts and locks to the fixed-side locking portion 427 is used to save the worker who performs the fitting work. A feeling (click feeling) can be given.

  Next, the other side of the intermediate adapter 12 is fitted to the movable connector 16. In the fitting to the movable side connector 16, the spring 221 is bent and deformed by pressing the intermediate adapter 12 toward the fixed side connector 14.

  Further, as described above, since the movable side terminal 61 is formed with the movable side guide portion 613, the other side of the intermediate adapter 12 is inserted into the movable side adapter connecting portion 621 while slidingly contacting the other side adapter terminal 21b. can do.

  Furthermore, since the one-side adapter terminal 21a can be slidably contacted with the fixed-side guide portion 413, when the adapter shell end 232c is inserted into the movable-side adapter connection portion 621, the intermediate adapter 12 is connected to the fixed-side terminal 41 and About 3 degrees in the XY direction (see FIG. 9B) with respect to the center axis T (see FIG. 9A) of the movable terminal 61 (about 3 degrees centering on the Z axis), and in the Z direction (see FIG. (Refer to b), a positional deviation of about ± 1 mm is allowed.

  Then, when the spring 221 that has been bent and deformed is elastically restored, the other-side shell end 241 c is inserted into the movable-side adapter connecting portion 621, and the intermediate adapter 12 and the movable-side connector 16 are fitted and fixed by the intermediate adapter 12. The side connector 14 and the movable side connector 16 are connected so as to be conductive (see FIGS. 10A and 10B).

  The fixed connector 14 and the movable connector 16 connected as described above can be separated. That is, by pressing the intermediate adapter 12 toward the fixed connector 14, the spring 221 is bent and deformed, and the intermediate adapter 12 is removed from the movable connector 16. And it can isolate | separate by releasing the latching state of the other side ring edge part 252b and the stationary side latching | locking part 427, and removing the intermediate adapter 12 from the stationary side connector 14. FIG.

  As described above, since the one-side adapter terminal 21a and the other-side adapter terminal 21b are connected to both ends of the spring 221, the one-side adapter terminal 21a and the other-side are changed depending on the amount of the spring 221 that elastically recovers from the bending deformation. The interval W (see FIG. 3B) between the adapter terminals 21b can be changed. That is, the length H3 from the tip end portion 211a of the one-side adapter terminal 21a to the tip end portion 211b of the other-side adapter terminal 21b shown in FIG. 9A is within a predetermined range (for example, between 12.5 mm and 14.5 mm). Can be changed. Thereby, the electrical connector 1 can be made to follow the distance between board | substrates.

  As described above, the height H2 of the movable connector 16 is formed to be higher than the height H1 of the fixed connector 14 (see FIG. 9A). For this reason, when the spring 221 elastically recovers from the bending deformation, the other-side shell end 241 c is guided inside the movable-side adapter connecting portion 621, and the displacement of the intermediate adapter 12 can be suppressed.

  Furthermore, the height H2 of the movable connector 16 is such that when the amount of bending deformation of the spring 221 is maximum, the one-side adapter terminal 21a is fixed to the fixed-side terminal 41 as shown in FIGS. It is desirable that the length be such that the other-side shell end 241c can be positioned under the movable-side adapter connection portion 621 while slidingly contacting with it.

  In addition, the movable adapter connection portion 621 is formed with an inclined portion 629 that opens to the side where the other adapter terminal 21b is inserted. For this reason, as shown in FIG. 9B, the other-side shell end 241c from the lower part of the movable-side adapter connecting part 621 to the inside of the movable-side adapter connecting part 631 while slidingly contacting the one-side adapter terminal 21a with the fixed-side terminal 41. Can be positioned.

[7. Effect]
The above terminal-to-terminal connection structure is a terminal connection structure in which two terminals having a pin shape (one-side adapter terminal 21a and fixed-side terminal 41, other-side adapter terminal 21b and movable-side terminal 61) are fitted and connected. In addition, the other terminal (adapter terminal) is connected to the tip portion (fixed side tip portion 411, movable side tip portion 611) of one of the two terminals (fixed side terminal 41, movable side terminal 61). 21) can be inserted while sliding the tip portions (211a, 211b), and has a contact portion (fixed side) having an inner surface shape where at least one point of the tip portions (211a, 211b) of the other terminal is in contact in a fitted connection state The guide portion 413, the movable side guide portion 613), and the contact portion (the fixed side guide portion 413, the movable side guide portion 613) on the inner side in the axial direction of the one terminal (the arrow C direction and the arrow in FIG. 8A) A bottomed cavity portion (fixed-side bottomed cavity portion 415, movable-side bottomed cavity portion 615) having an inner surface shape that is located adjacent to the direction) and into which the tip portion (211a, 211b) of the other terminal cannot be inserted, And the contact part (fixed side guide part 413, movable side guide part 613) is the tip of the other terminal in the fitted connection state. It has a depth dimension (depth dimension E in FIG. 8C) in which only the portions (211a, 211b) are accommodated.

  According to the terminal connection structure described above, two terminals having a pin shape (the one-side adapter terminal 21a and the fixed-side terminal 41, and the other-side adapter terminal 21b and the movable-side terminal 61) are connected by a socket-shaped terminal. It is not necessary to form an elastic piece for holding the terminal as compared with the case of holding a pin-shaped terminal. Therefore, since the number of work steps can be reduced, the manufacturing cost can be reduced.

  Further, any one of the two terminals (one-side adapter terminal 21a and fixed-side terminal 41, other-side adapter terminal 21b and movable-side terminal 61) is connected to the tip portion (fixed-side tip portion 412 and movable-side tip portion 612). Since the contact portion (fixed side guide portion 413, movable side guide portion 613) having an inner surface shape that can be inserted while sliding the tip portion (211a, 211b) of the other terminal in contact with at least one point, is fitted. The positional deviation from the connection position can be suppressed.

  Furthermore, the inner side in the axial direction of one terminal (fixed side terminal 41, movable side terminal 61) than the contact portion (fixed side guide portion 413, movable side guide portion 613) (the arrow C direction and the arrow D in FIG. 8A). A bottomed cavity (fixed-side bottomed cavity 415, movable-side bottomed cavity 615) having an inner surface shape that is located adjacent to the direction) and cannot be inserted into the tip portion (211a, 211b) of the other terminal. By doing this, when the other terminal (adapter terminal 21) slides, the deposits attached to the tip portions (211a, 211b) are removed from the bottomed cavity (fixed side bottomed cavity 415, movable side bottomed cavity). 615) can improve the connection stability of the terminals (the one-side adapter terminal 21a and the fixed-side terminal 41, the other-side adapter terminal 21b and the movable-side terminal 61) by the wiping (cleaning) mechanism collected in 615). Therefore, it is possible to provide a terminal connection structure capable of reducing the manufacturing cost while improving the connection stability.

  In particular, since the one-side adapter terminal 21 a can be slidably contacted with the fixed-side guide portion 412, when the adapter shell end 232 c is inserted into the movable-side connecting portion 621, the intermediate adapter 12 and the fixed-side terminal 41 are movable. About 3 degrees (about 3 degrees about the Z axis) in the XY direction (see FIG. 9B) and Z direction (see FIG. 9B) with respect to the central axis T of the side terminal 61 (see FIG. 9A). )) Has a floating mechanism that allows a positional deviation of about ± 1 mm. For this reason, connection stability can be further improved.

  Further, the contact portions (fixed side guide portion 413, movable side guide portion 613) are inclined from the openings 413a, 613a) to the bottomed cavity portion (fixed side bottomed cavity portion 414, movable side bottomed cavity portion 614). Due to the shape of the inner surface, at least one point of the tip portion (211a, 211b) of the other terminal is in contact in the fitted connection state. Therefore, it is possible to reduce the displacement from the fitting connection position, and to a position where at least one point in the vicinity of the bottomed cavity (the fixed-side bottomed cavity 414, the movable-side bottomed cavity 614) is in contact. The insertion of the tip portions (211a, 211b) can be guided.

  The electrical connector 1 as described above is an electrical connector 1 for connecting two boards, and the fixed connector 14 and the movable connector 16 mounted on each of the two boards, the fixed connector 14 and And an intermediate adapter 12 for fitting and connecting the movable connector 16 in a separable manner. The intermediate adapter 12 is a first terminal having a pin shape at both ends (one end side intermediate contact 22a and the other end side intermediate contact 22b). The fixed-side connector 14 has a second terminal (fixed-side terminal 41) having a pin shape to which one end of the first terminal (one-side adapter terminal 21a) is connected, and is movable. The connector 16 has a third terminal (movable side terminal 61) having a pin shape to which the other end portion (other side adapter terminal 21b) of the first terminal is connected, and the second terminal (fixed side terminal 41) and Of the third terminal (movable side terminal 61), the tip part (211a, 211b) of the first terminal is inserted in sliding contact with the tip part (fixed side tip part 412, movable side tip part 612) of at least one terminal. And at least one of the contact portions (fixed side guide portion 413, movable side guide portion 613) having an inner surface shape that contacts at least one point of the tip portion (211a, 211b) of the first terminal in the fitted connection state. An inner surface that is located adjacent to the inner side of the terminal in the axial direction (arrow C direction and arrow D direction in FIG. 8A) and into which the tip portion (fixed-side tip portion 411, movable-side tip portion 611) of the first terminal cannot be inserted. A bottomed cavity having a shape (fixed side bottomed cavity 415, movable side bottomed cavity 615) and a connection hole (fixed side connection hole 413, movable side connection hole 613), and contact (Fixed side The id part 413 and the movable side guide part 613) have a depth dimension (depth dimension E in FIG. 8C) in which only the front end portions (211a, 211b) of the first terminal are accommodated in the fitted connection state. .

  According to the electrical connector 1 described above, a first terminal having a pin shape (adapter terminal 21) and a second terminal having a pin shape and / or a third terminal (fixed side terminal 41, movable side terminal 61) are connected. There is no need to form an elastic piece for holding the pin-shaped terminal as compared with the case where the pin-shaped terminal is held by the socket-shaped terminal. Therefore, since the number of work steps can be reduced, the manufacturing cost can be reduced.

  In addition, among the second terminal and the third terminal (fixed-side terminal 41, movable-side terminal 61), the tip of the first terminal is connected to the tip portion (fixed-side tip portion 412, movable-side tip portion 612) of at least one of the terminals. Since the contact portions (fixed side guide portion 413, movable side guide portion 613) having an inner surface shape that can be inserted while sliding the portions (211a, 211b) and at least one point touches, the position shift from the fitting connection position Can be suppressed.

  Furthermore, the axial direction of the second terminal and / or the third terminal (fixed side terminal 41, movable side terminal 61) (arrow in FIG. 8A) rather than the contact portion (fixed side guide portion 413, movable side guide portion 613). A bottomed cavity (fixed side bottomed cavity 414, movable side bottomed) that is located adjacent to the inside of the C direction and the direction of arrow D) and has an inner surface shape into which the tip portion (211a, 211b) of the first terminal cannot be inserted. By forming the cavity portion 614), the deposits attached to the tip portions (211a, 211b) when the first terminal (adapter terminal 21) slides are removed from the bottomed cavity portion (fixed side bottomed cavity portion 414, It is possible to improve the connection stability of the first terminal (adapter terminal 21) and the second terminal and / or the third terminal (fixed side terminal 41, movable side terminal 61) by collecting in the movable-side bottomed cavity 614). . Therefore, it is possible to provide the electrical connector 1 capable of reducing the manufacturing cost while improving the connection stability.

  Further, the contact portions (fixed side guide portion 413, movable side guide portion 613) are inclined from the openings 413a, 613a) to the bottomed cavity portion (fixed side bottomed cavity portion 414, movable side bottomed cavity portion 614). Due to the shape of the inner surface, at least one point of the tip portion (211a, 211b) of the first terminal is in contact in the fitted connection state. Therefore, it is possible to reduce the displacement from the fitting connection position, and to a position where at least one point in the vicinity of the bottomed cavity (the fixed-side bottomed cavity 414, the movable-side bottomed cavity 614) is in contact. The insertion of the tip portions (211a, 211b) can be guided.

  Further, the intermediate adapter 12 includes a first insulator (adapter insulator 231) that holds the first terminal (adapter terminal 21) and a first shell (adapter shell 241) that covers the first insulator (adapter insulator 231). The fixed-side connector 14 includes a second insulator (fixed-side insulator 422) that holds the second terminal (fixed-side terminal 41) and a second insulator that covers the second insulator (fixed-side insulator 422). The movable side connector 16 includes a third insulator (movable side insulator 622) that holds a third terminal (movable side terminal 61), and a third insulator (movable side insulation). Since the third shell (movable side shell 623) covering the body 622) is provided, leakage of electromagnetic waves generated from each terminal (adapter terminal 21, fixed side terminal 41, movable side terminal 61) and intrusion of noise from the outside are prevented. Prevent bad electrical characteristics It is possible to suppress. Further, the shell (adapter shell 241, fixed side shell 423, movable side shell 623) covering the insulator (adapter insulator 231, fixed side insulator 422, movable side insulator 622) and the outer conductor of the substrate and the shell (adapter The shell 241, the fixed shell 423, and the movable shell 623) can be electrically connected.

  The first insulator (adapter insulator 231) includes an insulating portion (one-side adapter insulator 231a) that holds one end portion side (one-side adapter terminal 21a) of the first terminal and the other end portion of the first terminal. The first terminal and the second terminal (the one-side adapter terminal 21a and the fixed-side terminal 41) are constituted by two parts of the insulating portion (the other-side adapter insulator 231b) that holds the side (the other-side adapter terminal 21b). ), Insulating the contact portions (fixed side guide portion 413, movable side guide portion 613) of the first terminal and the third terminal (the other side adapter terminal 21b and the movable side terminal 61) and by dividing the contact portion into two parts. The manufacturing cost can be reduced.

  Further, when the intermediate adapter 12 is fitted to the fixed-side connector 14, it is bent and deformed until it is in the fitted connection state, and when it is in the fitted and connected state, the elastic portion (ring portion 252) in which the bending deformation is elastically restored, and the fitting Since it is further provided with a contact portion (fixed side locking portion 427) with which the elastic portion comes into contact when it is in the connected state, it is easy for the worker who performs the fitting operation to check whether or not it is in a proper fitted connection state. Can do.

  In addition, since the elastic portion (ring portion 252) comes into contact with the contact portion (fixed side locking portion 427) in a proper fitting connection state, a moderation feeling (click feeling) is given to the worker who performs the fitting operation. Thus, it can be easily confirmed whether or not a normal fitting connection state has been reached.

  Further, since the one-side adapter terminal 21a and the other-side adapter terminal 21b have the same shape of pin, and the fixed-side terminal 41 and the movable-side terminal 61 have the same shape of pin, the fitting connection There is no restriction in the direction, and erroneous fitting between the fixed connector 14 and the movable connector 16 can be suppressed.

  Furthermore, since the one-side adapter terminal 21a and the other-side adapter terminal 21b are connected to both ends of the spring 221, the distance between the one-side adapter terminal 21a and the other-side adapter terminal 21b is determined by the amount that the spring 221 elastically recovers from the bending deformation. W (see FIG. 3B) can be changed. That is, the length H3 from the tip end portion 211a of the one-side adapter terminal 21a to the tip end portion 211b of the other-side adapter terminal 21b shown in FIG. 9A is within a predetermined range (for example, between 12.5 mm and 14.5 mm). Can be changed. Thereby, the electrical connector 1 can be made to follow the distance between board | substrates.

  Further, since the one-side adapter insulator 231a and the other-side adapter insulator 231b have the same shape and can be molded using the same mold, the one-side adapter insulator 231a configured in two parts is used. And the cost for manufacturing the other side adapter insulator 231b can be reduced.

  Furthermore, since the one-side adapter ring 251a and the other-side adapter ring 251b can be molded using the same mold, the cost for manufacturing the adapter ring 251 can be reduced. .

[8. Modified example]
As described above, the terminal connection structure and the electrical connector 1 according to the present embodiment are illustrated and described based on the embodiment. However, the terminal connection structure and the electrical connector 1 are not limited to this, and the configuration of each part is the same. It can be replaced with an arbitrary configuration having the above function. Hereinafter, modifications of the terminal connection structure and the electrical connector 1 will be described.

  In the above-described embodiment, the adapter insulator 231 is described as being divided into two parts of the one-side adapter insulator 231a and the other-side adapter insulator 231b. However, the adapter insulator 231 may be integrally formed. That is, the adapter insulator 231 may be configured integrally so that the one-side adapter terminal 21a and the other-side adapter terminal 21b can be held. However, as described above, by constituting the one-side adapter insulator 231a and the other-side adapter insulator 231b into two parts, the cost for the insulator can be reduced as compared with the case where the one-side adapter insulator 231b is constituted integrally.

  In the embodiment described above, the case where the fixed side locking portion 427 over which the adapter ring 251 rides over is formed only in the fixed side connector 14, but the movable side locking portion over which the adapter ring 251 rides over the movable side connector 16 as well. And a moderation feeling (click feeling) may be given to an operator who performs the fitting work when the intermediate adapter 12 is fitted to the movable connector 16.

  In the above-described embodiment, as an example in which the fixed-side distal end portion 412 or the movable-side distal end portion 612 has an inner surface shape that contacts at least one point with the fixed-side guide portion 413 or the movable-side guide portion 613, The case of the inner surface shape inclined from the openings 411a and 611a of the connection hole 611 to the fixed-side bottomed cavity 414 and the movable-side bottomed cavity 614 has been described, but the fixed-side tip portion 412 or the movable-side tip portion 612 Other inner surface shapes may be used as long as the inner surface shape contacts at least one point.

  In the embodiment described above, the case where the height H2 of the movable connector 16 is formed to be higher than the height H1 of the fixed connector 14 (H1 <H2) has been described. The height H2 may be the same height (H1 = H2) as the height of the fixed connector 14. Further, the height H1 of the fixed connector 14 may be higher than the height H2 of the movable connector 16 (H1> H2).

  In the above-described embodiment, the case where the connection hole (the fixed side connection hole 411 and the movable side connection hole 611) is provided in both the fixed side terminal 41 and the movable side terminal 61 has been described. And only the fixed terminal 41). However, in order to improve connection stability, it is desirable that connection holes are provided in both the fixed side terminal 41 and the movable side terminal 61.

  As mentioned above, even if it replaces with the thing of the arbitrary structures which have the same function, the effect similar to the terminal connection structure and electric connector 1 which concern on embodiment of this invention can be acquired.

DESCRIPTION OF SYMBOLS 1 Electrical connector 12 Intermediate adapter 14 Fixed side connector 16 Movable side connector 21a One side adapter terminal 21b Other side adapter terminal 22a One end side intermediate contact 22b Other end side intermediate contact 23 Adapter main body 41 Fixed side terminal 42 Fixed side connector main body 61 Movable side Terminal 62 Movable connector body 211 Tip portion 221 Spring 231 Adapter insulator 241 Adapter shell 251 Adapter ring 252 Ring portion 253 Elastic piece 411 Fixed side connection hole 412 Fixed side tip portion 413 Fixed side guide portion 414 Fixed side bottomed cavity portion 421 Fixed-side adapter connection portion 422 Fixed-side insulator 423 Fixed-side shell 427 Fixed-side locking portion 431 Fixed-side base portion 432 Fixed-side substrate connection portion 611 Movable-side connection hole 612 Movable-side tip portion 613 Movable-side guide portion 14 movable bottomed hollow portion 621 movable adapter connector 622 movable insulator 623 movable shell 631 movable base 632 movable board connecting portion

Claims (7)

A terminal connection structure for fitting and connecting two terminals having a pin shape,
At the tip portion of one of the two terminals,
A contact portion that can be inserted while sliding the tip portion of the other terminal, and has an inner surface shape that contacts at least one point of the tip portion of the other terminal in the fitted connection state;
It has a connection hole composed of a bottomed cavity portion that is located adjacent to the inner side in the axial direction of the one terminal than the contact portion and has an inner surface shape into which the tip portion of the other terminal cannot be inserted,
The contact portion has a depth dimension in which only the tip portion of the other terminal is accommodated in the fitted connection state. The contact portion is
The at least one point of the tip of the other terminal is in contact with the other terminal due to the inner surface shape inclined from the opening into which the other terminal is inserted to the bottomed cavity. Terminal connection structure described in 1. An electrical connector for connecting between two boards,
A fixed connector and a movable connector mounted on each of the two substrates;
An intermediate adapter that detachably fits and connects the fixed connector and the movable connector;
The intermediate adapter has a first terminal having a pin shape at both ends,
The fixed connector has a second terminal having a pin shape to which one end of the first terminal is connected,
The movable connector has a third terminal having a pin shape to which the other end of the first terminal is connected,
Of the second terminal and the third terminal, at the tip of at least one terminal,
A contact portion that can be inserted while sliding the tip portion of the first terminal, and has an inner surface shape that contacts at least one point of the tip portion of the first terminal in the fitted connection state;
A connecting hole that is located adjacent to the contact portion on the inner side in the axial direction of the at least one terminal and has a bottomed cavity portion having an inner surface shape into which the tip portion of the first terminal cannot be inserted. ,
The electrical connector according to claim 1, wherein the contact portion has a depth dimension in which only the tip portion of the first terminal is accommodated in the fitted connection state. The contact portion is
4. The electricity according to claim 3, wherein at least one point of the tip end portion of the first terminal is in contact in the fitting connection state due to an inner surface shape inclined from the opening portion of the connection hole to the bottomed cavity portion. connector. The intermediate adapter has a first insulator that holds the first terminal, and a first shell that covers the first insulator;
The fixed connector includes a second insulator that holds the second terminal, and a second shell that covers the second insulator,
5. The electrical connector according to claim 3, wherein the movable connector includes a third insulator that holds the third terminal and a third shell that covers the third insulator. 6.   The first insulator is divided into two parts, an insulating part that holds one end of the first terminal and an insulating part that holds the other end of the first terminal. The electrical connector according to claim 5. When the fixed connector or the movable connector is fitted to the intermediate adapter, it is bent and deformed until it is in a fitted connection state, and when it is in the fitted and connected state, the elastic part that elastically returns to the bent deformation,
The electrical connector according to any one of claims 3 to 6, further comprising an abutting portion with which the elastic portion abuts in the fitted connection state.

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