JP7282449B2 - plugs and receptacles - Google Patents

Description

TECHNICAL FIELD The present invention relates to connectors (plugs and receptacles) suitable for making electrical connections between electrical /electronic equipment and the like.

Patent Literature 1 below describes a connector that can be used for electrical connection between electrical/electronic devices and the like. In this connector, by inserting the connecting end of the female connector into the connecting end of the male connector, the three contact pins of the male connector are inserted into the receiving holes of the three contact receiving pins of the female connector, They are configured to be electrically connected to each other.

Utility Model Registration No. 3146918

By the way, today, technological development for realizing IoT (Internet of Things) is proceeding. For example, technology for connecting various devices such as household electrical appliances, automobiles, industrial machinery, and medical devices to the Internet, installing sensors in these devices, and remotely monitoring or remotely controlling these devices using information terminal devices. is being developed. When mounting a sensor on a device, a connector is required to electrically connect the device and the sensor. It is necessary to avoid increasing the size of the equipment by providing the equipment with sensors and connectors. Therefore, it is desired that the sensor and the connector to be provided in the device are both small.

There are the following problems in attempting to miniaturize the connector. In the connector, a plurality of terminals are arranged at predetermined positions separated from each other, and each terminal is firmly supported in the connector housing so that the arrangement of the terminals is maintained. As the connector becomes smaller, each terminal and the connector housing become smaller, which may make it difficult to construct a structure for firmly supporting a plurality of terminals in the connector housing.

Further, in the connector, it is necessary to ensure the strength of each terminal so that the terminals of the connector are not damaged by repeated insertion and removal of the connectors. As the connector becomes smaller, the diameter of each terminal becomes smaller, which may make it difficult to ensure the strength of each terminal.

In addition, when connecting connectors, the orientation of both connectors should be easily aligned so that the plurality of terminals of one connector and the plurality of terminals of the other connector are in proper contact with each other. need to be able to In this respect, the connector described in Patent Document 1 below has a mark formed on the outer peripheral surface of the connection end of the male connector and a mark formed on the connection end of the female connector when connecting the male connector and the female connector. By aligning the marks formed on the outer peripheral surface, the ribs formed on the connecting end of the female connector are inserted into the grooves formed on the connecting end of the male connector, and the three contact pins of the male connector and the female connector are inserted into the grooves formed on the connecting end of the male connector. It has a structure in which three contact receiving pins of the connector come into contact with each other. However, as the connector becomes smaller, even if a mark is formed on the outer peripheral surface of the connector housing, the mark becomes smaller and becomes difficult to confirm. In addition, in the case of small connectors, it is not easy to pick the connector by hand and rotate it finely in the circumferential direction. This makes the task of aligning them to be difficult.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a structure for firmly supporting a plurality of terminals, ensuring the strength of the terminals, and facilitating connection with a mating connector. , to provide a plug or receptacle capable of miniaturizing itself .

In order to solve the above problems, the plug of the present invention is a plug attached to a cable and connected to a mating connector, comprising a first plug terminal, a second plug terminal, and a third plug terminal. and a plug support for supporting the first plug terminal, the second plug terminal and the third plug terminal, wherein the first plug terminal has an axis extending in the front-rear direction. A cylindrical contact piece that contacts a first mating terminal of the mating connector, and a flat plate-like connection piece that extends in the front, rear, left, and right directions and is connected to the first electric wire of the cable. and a connecting portion for connecting the contact piece of the first plug terminal and the connection piece of the first plug terminal, and the second plug terminal is formed in a cylindrical shape, The contact piece is disposed concentrically with the contact piece of the first plug terminal on the outer peripheral side of the contact piece of the plug terminal, and contacts the second mating terminal of the mating connector, and a flat plate shape extending in the front, back, left and right directions. A connecting piece formed to connect a second electric wire of the cable and a connecting portion connecting the contact piece of the second plug terminal and the connecting piece of the second plug terminal are provided, The third plug terminal has a cylindrical shape and is arranged concentrically with the contact piece of the second plug terminal on the outer peripheral side of the contact piece of the second plug terminal. a contact piece that contacts the mating terminal; a connection piece that is formed in a flat plate shape extending in the front, rear, left, and right directions and to which a third electric wire of the cable is connected; a contact piece of the third plug terminal and the third and a connecting portion for connecting the connecting pieces of the plug terminals of the first plug terminal, the connecting piece of the second plug terminal, and the connecting piece of the third plug terminal in the front-rear direction. are arranged parallel to each other in the same position and spaced apart from each other, and the plug supports are formed by insert molding of the first plug terminal connection portion and the second plug terminal connection portion. and the connecting portion of the first plug terminal, the connecting portion of the second plug terminal and the connecting portion of the third plug terminal in a state where the connecting portion of the third plug terminal is embedded in the plug support. It is characterized by being an integrated resin molding.

Further, in the plug of the present invention, base end portions of the first plug terminal, the second plug terminal and the third plug terminal may be embedded in the plug support.

Further, in the plug of the present invention, the first mating terminal is provided with a pin-shaped or cylindrical contact piece, and the second mating terminal is formed in a cylindrical shape, A contact piece arranged concentrically with the contact piece of the first mating terminal is provided on the outer peripheral side of the contact piece of the mating terminal, and the third mating terminal is formed in a cylindrical shape, and the second mating terminal A contact piece arranged concentrically with the contact piece of the second mating terminal is provided on the outer peripheral side of the contact piece of the mating terminal, and when the plug and the mating connector are connected, the contact of the first mating terminal is established. A strip is inserted inside the contact strip of the first plug terminal, a contact strip of the second mating terminal is inserted inside the contact strip of the second plug terminal, and a contact strip of the third mating terminal is inserted. A piece is inserted inside the contact piece of the third plug terminal, and each contact piece of the first plug terminal, the second plug terminal and the third plug terminal has a first projection and a third contact piece. 2 convex portions are provided, and in each contact piece of the first plug terminal, the second plug terminal and the third plug terminal, the first convex portion and the second convex portion form the contact The first convex portion and the second convex portion protrude radially inward from a part of the contact piece in the circumferential direction, and the first convex portion and the second convex portion are arranged at the same position in the circumferential direction of the contact piece, and the second convex portion is the contact piece. The second protrusion is disposed closer to the base end side in the axial direction of the contact piece than the first protrusion, and the height of the second protrusion is equal to or higher than the height of the first protrusion. The width of the second protrusion is equal to or greater than the width of the first protrusion, and a part of the second protrusion is embedded in the plug support, so that when the plug and the mating connector are connected, the first plug The first projection provided on the contact piece of the terminal contacts the contact piece of the first mating terminal, and the first projection provided on the contact piece of the second plug terminal contacts the first contact piece. The first protrusion provided on the contact piece of the third plug terminal may contact the contact piece of the third mating terminal.

Further, in the plug of the present invention, the first mating terminal is provided with a pin-shaped or cylindrical contact piece, and the second mating terminal is formed in a cylindrical shape, A contact piece arranged concentrically with the contact piece of the first mating terminal is provided on the outer peripheral side of the contact piece of the mating terminal, and the third mating terminal is formed in a cylindrical shape, and the second mating terminal A contact piece arranged concentrically with the contact piece of the second mating terminal is provided on the outer peripheral side of the contact piece of the mating terminal, and when the plug and the mating connector are connected, the contact of the first plug terminal is established. A strip is inserted inside the contact strip of the first mating terminal, a contact strip of the second plug terminal is inserted inside the contact strip of the second mating terminal, and a contact strip of the third plug terminal is inserted. A piece is inserted inside the contact piece of the third mating terminal, and each contact piece of the first plug terminal, the second plug terminal and the third plug terminal has a first projection and a third contact piece. 2 convex portions are provided, and in each contact piece of the first plug terminal, the second plug terminal and the third plug terminal, the first convex portion and the second convex portion form the contact The first projection and the second projection project radially outward from a portion of the piece in the circumferential direction, the first projection and the second projection are arranged at the same position in the circumferential direction of the contact piece, and the second projection is the contact piece. The second protrusion is disposed closer to the base end side in the axial direction of the contact piece than the first protrusion, and the height of the second protrusion is equal to or higher than the height of the first protrusion. The width of the second protrusion is equal to or greater than the width of the first protrusion, and a part of the second protrusion is embedded in the plug support, so that when the plug and the mating connector are connected, the first plug The first projection provided on the contact piece of the terminal contacts the contact piece of the first mating terminal, and the first projection provided on the contact piece of the second plug terminal contacts the first contact piece. The first protrusion provided on the contact piece of the third plug terminal may contact the contact piece of the third mating terminal.

Further, in the plug of the present invention, the first plug terminal, the second plug terminal, the third plug terminal, the plug support, and the third plug connected to the connection piece of the first plug terminal. an end of one electric wire, an end of the second electric wire connected to the connecting piece of the second plug terminal, and an end of the third electric wire connected to the connecting piece of the third plug terminal and the housing is overmolded with the plug carrier, the end of the first electric wire connected to the connecting piece of the first plug terminal, and the second plug terminal. The end portion of the second electric wire connected to the connecting piece and the end portion of the third electric wire connected to the connecting piece of the third plug terminal may be integrated with each other. .

Further, in order to solve the above problems, the receptacle of the present invention is a receptacle that is attached to a substrate provided with a circuit and that is connected to a mating connector, and comprises a first receptacle terminal and a second receptacle terminal. and a third receptacle terminal, and a receptacle support for supporting the first receptacle terminal, the second receptacle terminal and the third receptacle terminal, wherein the first receptacle terminal has a front and rear terminal. A pin-shaped or cylindrical contact piece having an axis extending in the direction of the circuit and contacting the first mating terminal of the mating connector; and a connecting portion connecting the contact piece of the first receptacle terminal and the connection piece of the first receptacle terminal, and the second receptacle terminal has a cylindrical a contact piece formed in a shape, arranged concentrically with the contact piece of the first receptacle terminal on the outer peripheral side of the contact piece of the first receptacle terminal, and contacting a second mating terminal of the mating connector; A connection piece formed in a plate shape extending in the front, rear, left, and right directions and connected to the second portion of the circuit, and connecting the contact piece of the second receptacle terminal and the connection piece of the second receptacle terminal. a coupling portion is provided in the third receptacle terminal, is formed in a cylindrical shape, and is arranged concentrically with the contact piece of the second receptacle terminal on the outer peripheral side of the contact piece of the second receptacle terminal; a contact piece that contacts a third mating terminal of the mating connector; a connection piece that is formed in a flat plate shape extending in the front, rear, left, and right directions and is connected to a third portion of the circuit; and the third receptacle terminal. and a connection piece of the third receptacle terminal, the connection piece of the first receptacle terminal, the connection piece of the second receptacle terminal, and the third receptacle terminal are arranged parallel to each other in the same position in the front-rear direction, while being spaced apart from each other, and the receptacle support is formed by insert molding to connect the first receptacle terminal and the first receptacle terminal. The first receptacle terminal connecting portion, the second receptacle terminal connecting portion and the third receptacle terminal connecting portion are embedded in the receptacle support. is a resin molded product integrated with the connecting portion of the receptacle terminal.

Further, in the receptacle of the present invention, base end portions of the first receptacle terminal, the second receptacle terminal and the third receptacle terminal may be embedded in the receptacle support.

In the receptacle of the present invention, the first mating terminal is provided with a contact piece formed in a cylindrical shape, and the second mating terminal is provided with a contact piece formed in a cylindrical shape. A contact piece arranged concentrically with the contact piece of the first mating terminal is provided on the outer peripheral side of the contact piece of the third mating terminal. A contact piece is arranged concentrically with the contact piece of the second mating terminal on the outer peripheral side of the contact piece, and when the receptacle and the mating connector are connected, the contact piece of the first receptacle terminal The contact piece of the second receptacle terminal is inserted inside the contact piece of the first mating terminal, the contact piece of the second receptacle terminal is inserted inside the contact piece of the second mating terminal, and the contact piece of the third receptacle terminal is the contact piece of the It is inserted inside the contact piece of the third mating terminal, and the contact pieces of the first receptacle terminal, the second receptacle terminal and the third receptacle terminal each have a first projection and a second projection. is provided, and in each of the contact pieces of the first receptacle terminal, the second receptacle terminal and the third receptacle terminal, the first convex portion and the second convex portion extend around the circumference of the contact piece. The first protrusion and the second protrusion are arranged at the same position in the circumferential direction of the contact piece, and the second protrusion is located at the first protrusion. The height of the second protrusion is equal to or greater than the height of the first protrusion, and the width of the second protrusion is the height of the first protrusion. The width of the second protrusion is equal to or greater than the width of the first protrusion, and a part of the second protrusion is embedded in the receptacle support, and the contact of the first receptacle terminal when the receptacle and the mating connector are connected. The first projection provided on the piece contacts the contact piece of the first mating terminal, and the first projection provided on the contact piece of the second receptacle terminal contacts the second mating terminal. The first projection provided on the contact piece of the third receptacle terminal may come into contact with the contact piece of the third mating terminal.

In the receptacle of the present invention, the first mating terminal is provided with a contact piece formed in a cylindrical shape, and the second mating terminal is provided with a contact piece formed in a cylindrical shape. A contact piece arranged concentrically with the contact piece of the first mating terminal is provided on the outer peripheral side of the contact piece of the third mating terminal. A contact piece is arranged concentrically with the contact piece of the second mating terminal on the outer peripheral side of the contact piece, and when the receptacle and the mating connector are connected, the contact piece of the first mating terminal The contact piece of the second mating terminal is inserted inside the contact piece of the first receptacle terminal, the contact piece of the second mating terminal is inserted inside the contact piece of the second receptacle terminal, and the contact piece of the third mating terminal is the contact piece of the It is inserted inside the contact piece of the third receptacle terminal, and the contact pieces of the first receptacle terminal, the second receptacle terminal and the third receptacle terminal each have a first projection and a second projection. is provided, and in each of the contact pieces of the first receptacle terminal, the second receptacle terminal and the third receptacle terminal, the first convex portion and the second convex portion extend around the circumference of the contact piece. The first protrusion and the second protrusion are arranged at the same position in the circumferential direction of the contact piece, and the second protrusion is located at the first protrusion. The height of the second protrusion is equal to or greater than the height of the first protrusion, and the width of the second protrusion is the height of the first protrusion. The width of the second protrusion is equal to or greater than the width of the first protrusion, and a part of the second protrusion is embedded in the receptacle support, and the contact of the first receptacle terminal when the receptacle and the mating connector are connected. The first projection provided on the piece contacts the contact piece of the first mating terminal, and the first projection provided on the contact piece of the second receptacle terminal contacts the second mating terminal. The first projection provided on the contact piece of the third receptacle terminal may come into contact with the contact piece of the third mating terminal.

According to the present invention, it is possible to provide a plug or receptacle capable of reducing its own size while realizing a structure for firmly supporting a plurality of terminals, securing the strength of the terminals, and facilitating connection with a mating connector. can be done .

It is an explanatory view showing a connector device of an embodiment of the present invention. FIG. 4 is an external view showing a receptacle in the connector device according to the embodiment of the invention; 1 is an external perspective view showing inner terminals, intermediate terminals and outer terminals in a receptacle of a connector device according to an embodiment of the present invention; FIG. FIG. 4 is an external view showing inner terminals, intermediate terminals, and outer terminals of the receptacle as seen from the direction of arrow IV in FIG. 3; FIG. 4 is an external view showing inner terminals, intermediate terminals, and outer terminals of the receptacle viewed from the direction of arrow V in FIG. 3; FIG. 3 is a cross-sectional view of the receptacle seen from the direction of arrows VI-VI in FIG. 2; FIG. 4 is an exploded view showing the plug in the connector device of the embodiment of the present invention; FIG. 4 is an external view showing a plug body in the plug of the connector device according to the embodiment of the present invention; 1 is an external perspective view showing an inner terminal, an intermediate terminal and an outer terminal in a plug of a connector device according to an embodiment of the present invention; FIG. FIG. 10 is an external view showing the inner terminal, the intermediate terminal and the outer terminal of the plug as seen from the arrow X direction in FIG. 9; FIG. 10 is an external view showing the inner terminal, intermediate terminal and outer terminal of the plug viewed from the direction of arrow XI in FIG. 9; FIG. 9 is a cross-sectional view of the plug body viewed from the direction of arrows XII-XII in FIG. 8; FIG. 13 is a cross-sectional view of the plug body viewed from the direction of arrows XIII-XIII in FIG. 12; FIG. 4 is a cross-sectional view showing the housing in the plug of the connector device according to the embodiment of the present invention; FIG. 4 is a cross-sectional view showing a state in which the receptacle and the plug are connected to each other in the connector device according to the embodiment of the present invention; FIG. 4 is an explanatory diagram showing a mold piece used for molding a plug support in the connector device according to the embodiment of the present invention;

(connector device)
FIG. 1 shows a connector device 1 according to an embodiment of the invention. As shown in FIG. 1, the connector device 1 has a receptacle 11 and a plug 41. As shown in FIG. The receptacle 11 is connected to circuits 3 and 4 (see FIG. 2) respectively provided on the upper and lower surfaces of the substrate 2 of the electronic/electrical device. The plug 41 is connected to a plurality of electric wires 6, 7, 8 that the cable 5 has. By fitting the receptacle 11 and the plug 41 together, the circuits 3, 4 and the plurality of electric wires 6, 7, 8 are electrically connected.

(receptacle)
FIG. 2 shows receptacle 11 . FIG. 3 shows inner terminal 12, intermediate terminal 18 and outer terminal 24 of receptacle 11. FIG. 4 shows the inner terminal 12, intermediate terminal 18 and outer terminal 24 of the receptacle 11 viewed from the direction of arrow IV in FIG. 5 shows the inner terminal 12, intermediate terminal 18 and outer terminal 24 of the receptacle 11 viewed from the direction of arrow V in FIG. FIG. 6 shows a cross section of the receptacle 11 viewed in the direction of arrows VI--VI in FIG. For convenience of explanation, the side of the receptacle 11 to which the plug 41 is fitted is referred to as "front" and the side attached to the substrate 2 is referred to as "rear". Also, the top and bottom in FIG. 2 when the receptacle 11 is placed as shown in FIG. Also, the left and right sides of the receptacle 11 placed as shown in FIG. F1, B1, U1, D1, L1 and R1 in FIGS. 2-6 indicate "front", "back", "up", "lower", "left" and "right" of receptacle 11, respectively. .

As shown in FIGS. 2-6, the receptacle 11 has an inner terminal 12, an intermediate terminal 18, an outer terminal 24, a support 30 and a seal ring 35. FIG. The inner terminal 12, the intermediate terminal 18, and the outer terminal 24 are formed by pressing a conductive metal plate such as brass. Also, the inner terminal 12, the intermediate terminal 18 and the outer terminal 24 are electrically isolated from each other.

As shown in FIG. 3 , the inner terminal 12 of the receptacle 11 has a contact piece 13 , a connection piece 14 and a connecting portion 15 . In the inner terminal 12 , the contact piece 13 is arranged on the front end side of the receptacle 11 and contacts the contact piece 44 of the inner terminal 43 of the plug 41 . 6, the contact piece 13 is shaped like a pin with its axis A1 extending in the longitudinal direction of the receptacle 11. As shown in FIG. Specifically, the contact piece 13 is formed to have a pin-like outer shape by bending a metal plate material into a covered cylindrical shape.

In the inner terminal 12 of the receptacle 11, the connection piece 14 is arranged on the rear end side of the receptacle 11 as shown in FIG. part ). 5, the connecting piece 14 has a flat plate-like lower surface extending in the front, rear, left, and right directions of the receptacle 11. As shown in FIG. Moreover, as shown in FIG. 2, the connecting piece 14 is arranged above the axis A1, and the lower surface of the connecting piece 14 is parallel to the axis A1.

In the inner terminal 12 of the receptacle 11, the connecting portion 15 connects the rear end of the contact piece 13 and the front end of the connection piece 14, as shown in FIG. The connecting portion 15 extends rearward from the rear end of the contact piece 13 , bends upward, extends upward, then bends rearward to reach the front end of the connection piece 14 .

Intermediate terminal 18 of receptacle 11 has contact piece 19 , connection piece 20 and connecting portion 21 . At intermediate terminal 18 , contact piece 19 contacts contact piece 50 of intermediate terminal 49 of plug 41 . Further, as shown in FIG. 4, the contact piece 19 is formed in a cylindrical shape having an inner diameter larger than the outer diameter of the contact piece 13 of the inner terminal 12 of the receptacle 11 . Further, the contact piece 19 is arranged concentrically with the contact piece 13 on the outer peripheral side of the contact piece 13 of the inner terminal 12 of the receptacle 11 .

At the intermediate terminal 18 of the receptacle 11, the connecting piece 20 is connected to a portion of the circuit 4 ( second portion of the circuit provided on the substrate ) provided on the bottom surface of the substrate 2, as shown in FIG. As shown in FIG. 5, the connecting piece 20 is shaped like a flat plate whose upper surface extends in the longitudinal and lateral directions of the receptacle 11 and parallel to the lower surface of the connecting piece 14 of the inner terminal 12 of the receptacle 11 . Further, the connecting piece 20 is arranged below the axis A<b>1 and on the lower left side of the connecting piece 14 of the inner terminal 12 of the receptacle 11 .

In the intermediate terminal 18 of the receptacle 11 , the connecting portion 21 connects the left rear end portion of the contact piece 19 and the front end of the connecting piece 20 . The connecting portion 21 extends rearward from the rear left portion of the contact piece 19 and then bends leftward to reach the front end of the connecting piece 20 .

The outer terminal 24 of the receptacle 11 has a contact piece 25 , a connection piece 26 and a connecting portion 27 . At the outer terminal 24 , the contact piece 25 contacts the contact piece 56 of the outer terminal 55 of the plug 41 . Further, as shown in FIG. 4, the contact piece 25 is formed in a cylindrical shape having an inner diameter larger than the outer diameter of the contact piece 19 of the intermediate terminal 18 of the receptacle 11 . Further, the contact piece 25 is arranged concentrically with the contact piece 13 of the inner terminal 12 and the contact piece 19 of the intermediate terminal 18 of the receptacle 11 on the outer peripheral side of the contact piece 19 of the intermediate terminal 18 of the receptacle 11 .

At the outer terminal 24 of the receptacle 11, the connecting piece 26 is connected to another portion of the circuit provided on the lower surface of the substrate 2 ( the third portion of the circuit provided on the substrate ). The illustration of other parts of the circuit provided on the lower surface of the substrate 2 is omitted. As shown in FIGS. 3 to 5, the connecting piece 26 is shaped like a flat plate whose upper surface extends in the longitudinal and lateral directions of the receptacle 11 and is parallel to the lower surface of the connecting piece 14 of the inner terminal 12 of the receptacle 11 . Further, the connection piece 26 is arranged below the axis A<b>1 and on the lower right side of the connection piece 14 of the inner terminal 12 of the receptacle 11 . As shown in FIG. 5, when the receptacle 11 is viewed from above, the connection piece 26 is arranged substantially symmetrically with the connection piece 20 of the intermediate terminal 18 of the receptacle 11 with respect to the axis A1. In the receptacle 11, the upper surface of the connecting piece 20 of the intermediate terminal 18 and the upper surface of the connecting piece 26 of the outer terminal 24 are on the same plane.

In the outer terminal 24 of the receptacle 11 , the connecting portion 27 connects the rear end of the right portion of the contact piece 25 and the front end of the connecting piece 26 . The connecting portion 27 extends rearward from the rear end of the right portion of the contact piece 25 and then bends to the right to reach the front end of the connection piece 26 .

Support 30 of receptacle 11 supports inner terminal 12, intermediate terminal 18 and outer terminal 24 in an electrically insulated manner. As shown in FIG. 6, the support 30 collectively surrounds the joints 15, 21, 27 of the inner terminal 12, the intermediate terminal 18, and the outer terminal 24, and between the joints 15, 21, 27. is formed by an integral resin molding that fills the The support 30 is formed by insert molding (or integral molding), as will be described later. Further, the support 30 is formed in a cylindrical shape concentric with the contact piece 13 of the inner terminal 12 of the receptacle 11 . In the receptacle 11, the rear end side portions (base end side portions) of the contact pieces 13, 19, and 25 of the inner terminal 12, the intermediate terminal 18, and the outer terminal 24 are provided in the resin molding forming the support 30. It is buried.

A mounting groove portion 31 is formed along the entire periphery of the rear end side of the support member 30 . The mounting groove portion 31 is used to mount the receptacle 11 to the case of the electronic/electrical device in which the substrate 2 is accommodated. In addition, a seal ring insertion recess 32 is formed along the entire periphery of the support body 30 at an intermediate portion in the front-rear direction. A seal ring 35 as a seal member is inserted into the seal ring insertion recess 32 . The seal ring 35 is a member for waterproofing between the receptacle 11 and the plug 41, and is formed in a ring shape from an elastic material such as rubber. Further, an engaging projection 33 as an engaging portion for engaging the receptacle 11 and the plug 41 is formed along the entire circumference on the outer peripheral portion on the front end side of the support 30 .

(plug)
FIG. 7 is an exploded view showing the plug 41. As shown in FIG. FIG. 8 shows the plug body 42 of the plug 41. As shown in FIG. FIG. 9 shows the inner terminal 43, the intermediate terminal 49 and the outer terminal 55 of the plug 41. FIG. FIG. 10 shows the inner terminal 43, the intermediate terminal 49 and the outer terminal 55 viewed from the arrow X direction in FIG. FIG. 11 shows the inner terminal 43, intermediate terminal 49 and outer terminal 55 viewed from the direction of arrow XI in FIG. FIG. 12 shows a cross section of the plug body 42 viewed from the direction of arrows XII--XII in FIG. FIG. 13 shows a cross section of the plug body 42 viewed from the direction of arrows XIII--XIII in FIG. FIG. 14 shows a longitudinal section of the housing 68 of the plug 41 (a section taken along a plane including the axis of the housing 68). For convenience of explanation, the side of the plug 41 that is fitted into the receptacle 11 is referred to as the "front", and the side to which the wires 6, 7, 8 of the cable 5 are attached is referred to as the "rear". 8 when the plug main body 42 is placed as shown in FIG. Also, the left and right sides of the plug 41 when viewed from the front of the plug body 42 placed as shown in FIG. F2, B2, U2, D2, L2 and R2 in FIGS. 7 to 14 indicate "front", "rear", "up", "lower", "left" and "right" of the plug 41 respectively. .

As shown in FIG. 7, plug 41 has plug body 42 and housing 68 . The plug body 42 also has an inner terminal 43 , an intermediate terminal 49 , an outer terminal 55 and a support 65 . The inner terminal 43, the intermediate terminal 49, and the outer terminal 55 are formed by pressing a conductive metal plate such as brass. Also, the inner terminal 43, the intermediate terminal 49 and the outer terminal 55 are electrically isolated from each other.

As shown in FIG. 9, the inner terminal 43 of the plug 41 has a contact piece 44, a connection piece 45 and a connecting portion 46. As shown in FIG. In the inner terminal 43 , the contact piece 44 is arranged on the front end side of the plug 41 and contacts the contact piece 13 of the inner terminal 12 of the receptacle 11 . 10 and 12, the contact piece 44 is formed in a cylindrical shape with its axis A2 extending in the front-rear direction of the plug 41. As shown in FIGS. The outer diameter of the contact piece 44 is larger than the outer diameter of the contact piece 13 of the inner terminal 12 of the receptacle 11 and smaller than the inner diameter of the contact piece 19 of the intermediate terminal 18 of the receptacle 11 .

A contact projection 61 and a blocking projection 62 are formed on the contact piece 44 of the inner terminal 43 of the plug 41 . The contact convex portion 61 is formed in the inner terminal 12 of the receptacle 11 when the contact piece 13 of the inner terminal 12 of the receptacle 11 is inserted inside the contact piece 44 of the inner terminal 43 of the plug 41 when the plug 41 and the receptacle 11 are connected. contact piece 13 to electrically connect both contact pieces 44 and 13 to each other. As will be described later, the interrupting protrusion 62 has a function of preventing resin from flowing to the tip side of the contact piece 44 of the inner terminal 43 when the support 65 of the plug 41 is molded. The contact protrusion 61 and the blocking protrusion 62 each protrude radially inward of the contact piece 44 of the inner terminal 43 from the same position in the circumferential direction of the contact piece 44 of the inner terminal 43 . Also, the interrupting protrusion 62 is arranged on the rear side (base end side) of the contact piece 44 of the inner terminal 43 relative to the contact protrusion 61 . The height of the blocking projection 62 (the length from the inner peripheral surface of the contact piece 44 to the projecting end of the blocking projection 62) is the height of the contact projection 61 (the distance from the inner peripheral surface of the contact piece 44 to the contact projection). 61) or more. Also, the width of the blocking protrusion 62 is greater than or equal to the width of the contact protrusion 61 . Further, as shown in FIG. 12, the inner terminal 43 of the plug 41 of the present embodiment has a pair of contact protrusions 61 and blocking protrusions 62 on the left and right sides of the contact piece 44 with respect to the axis A2. They are formed bilaterally symmetrically.

In the inner terminal 43 of the plug 41, the connecting piece 45 is arranged on the rear end side of the plug 41, as shown in FIG. As indicated by the dashed line in FIG. 14, the end of the wire 6 ( first wire ) is connected to the upper surface of the connection piece 45 by soldering, for example. As shown in FIGS. 12 and 13, the connecting piece 45 has a flat plate-like top surface extending in the front, rear, left, and right directions of the plug 41 and parallel to the axis A2. Also, the connection piece 45 is arranged slightly below the axis A2 and on the left side of the axis A2.

In the inner terminal 43 of the plug 41, the connecting portion 46 connects the lower rear end of the contact piece 44 and the front end of the connecting piece 45, as shown in FIGS. The connecting portion 46 extends rearward from the lower rear end of the contact piece 44 and then bends to the left to reach the front end of the connecting piece 45 .

The intermediate terminal 49 of the plug 41 has a contact piece 50, a connection piece 51 and a connecting portion 52, as shown in FIG. At intermediate terminal 49 of plug 41 , contact piece 50 contacts contact piece 19 of intermediate terminal 18 of receptacle 11 . The contact piece 50 is formed in a cylindrical shape. The outer diameter of the contact piece 50 is larger than the outer diameter of the contact piece 44 of the inner terminal 43 of the plug 41, the outer diameter of the contact piece 19 of the intermediate terminal 18 of the receptacle 11, and the outer diameter of the outer terminal 24 of the receptacle 11. It is smaller than the outer diameter of the contact piece 25 . Further, as shown in FIG. 10 , the contact piece 50 is arranged concentrically with the contact piece 44 of the inner terminal 43 of the plug 41 on the outer peripheral side of the contact piece 44 of the inner terminal 43 of the plug 41 . Also, the contact piece 50 of the intermediate terminal 49 is formed with two pairs of contact projections 61 and blocking projections 62, like the contact piece 44 of the inner terminal 43. As shown in FIG.

In the intermediate terminal 49 of the plug 41, the connection piece 51 is arranged on the rear end side of the plug 41, as shown in FIG. As indicated by the dashed line in FIG. 14, the end of the wire 7 ( second wire ) is connected to the upper surface of the connection piece 51 by soldering, for example. As shown in FIGS. 8 and 11, the connecting piece 51 is shaped like a flat plate whose upper surface extends in the front, rear, left, and right directions of the plug 41 and is parallel to the upper surface of the connecting piece 45 of the inner terminal 43 of the plug 41 . there is The connection piece 51 is arranged below the connection piece 45 of the inner terminal 43 of the plug 41 and on the right side of the axis A2.

At the intermediate terminal 49 of the plug 41 , the connecting portion 52 connects the lower rear end of the contact piece 50 and the front end of the connecting piece 51 . As shown in FIGS. 10 and 11 , the connecting portion 52 extends rearward from the lower rear end of the contact piece 50 and then bends to the right to reach the front end of the connecting piece 51 .

The outer terminal 55 of the plug 41 has a contact piece 56, a connection piece 57 and a connecting portion 58, as shown in FIG. At the outer terminal 55 of the plug 41 , the contact piece 56 contacts the contact piece 25 of the outer terminal 24 of the receptacle 11 . The contact piece 56 is formed in a cylindrical shape. Further, the outer diameter of the contact piece 56 is larger than the outer diameter of the contact piece 44 of the intermediate terminal 49 of the plug 41 and larger than the outer diameter of the contact piece 25 of the outer terminal 24 of the receptacle 11 . Further, as shown in FIG. 10 , the contact piece 56 is arranged on the outer peripheral side of the contact piece 50 of the intermediate terminal 49 of the plug 41 , the contact piece 44 of the inner terminal 43 of the plug 41 and the contact piece 50 of the intermediate terminal 49 of the plug 41 . are arranged concentrically with the Also, the contact piece 56 is formed with two pairs of contact projections 61 and interrupting projections 62 in the same manner as the contact piece 44 of the inner terminal 43 of the plug 41 and the contact piece 50 of the intermediate terminal 49 of the plug 41 . there is

In the outer terminal 55 of the plug 41, the connection piece 57 is arranged on the rear end side of the plug 41, as shown in FIG. As indicated by the dashed line in FIG. 14, the upper surface of the connection piece 57 is connected to the end of the wire 8 (third wire) . As shown in FIGS. 8 and 11, the connecting piece 57 has an upper surface extending in the front, rear, left, and right directions of the plug 41 and parallel to the upper surfaces of the connecting pieces 45 and 51 of the inner terminal 43 and the intermediate terminal 49 of the plug 41, respectively. It is formed in a flat plate shape. Also, the connection piece 57 is arranged directly below the axis A<b>2 and below the connection piece 51 of the intermediate terminal 49 of the plug 41 .

In the outer terminal 55 of the plug 41 , the connecting portion 58 connects the lower rear end of the contact piece 56 and the front end of the connecting piece 57 . As shown in FIG. 9 , the connecting portion 58 linearly extends rearward from the lower rear end of the contact piece 56 .

Support 65 of plug 41 supports inner terminal 43, intermediate terminal 49 and outer terminal 55 in an electrically insulated manner. 12 and 13, the support 65 collectively surrounds the connecting portions 46, 52, 58 of the inner terminal 43, the intermediate terminal 49 and the outer terminal 55, and the connecting portions 46, 52, It is formed by an integral resin molding that fills the space 58 . Like the support 30 of the receptacle 11, the support 65 is formed by insert molding (or integral molding). The support 65 is formed in a cylindrical shape concentric with the contact piece 44 of the inner terminal 43 of the plug 41 . In the plug 41 , the rear end side portions (base end side portions) of the contact pieces 44 , 50 , 56 of the inner terminal 43 , the intermediate terminal 49 and the outer terminal 55 are embedded in the resin molding forming the support 65 . there is Further, as shown in FIGS. 7 and 12, fixing grooves 66 for fixing the support 65 in the accommodating portion 69 of the housing 68 are formed in the upper and lower portions of the outer peripheral side of the support 65, respectively. .

As shown in FIG. 7, the housing 68 of the plug 41 is made of a non-conductive material such as resin and has a cylindrical or columnar shape. As shown in FIG. 14, inside the housing 68, an accommodating portion 69 is formed to accommodate the inner terminal 43, the intermediate terminal 49, the outer terminal 55 and the support 65 of the plug 41. As shown in FIG. Fixed projections 70 are formed at two locations on the peripheral wall of the housing portion 69 to engage and fix the support body 66 in the housing portion 69 by being inserted into the fixing groove portion 66 of the support body 65 . . Further, in the housing 68 behind the accommodating portion 69, ends of the electric wires 6, 7, 8 connected to the connection pieces 45, 51, 57 of the inner terminal 43, the intermediate terminal 49, and the outer terminal 55, respectively. A wire support portion 71 is formed to support the . An insertion hole 72 into which the support 31 of the receptacle 11 is inserted is formed in the front end side of the housing 68 . The insertion hole 72 communicates with the housing portion 69 . The front end portions of the contact pieces 44 , 50 , 56 of the inner terminal 43 , the intermediate terminal 49 and the outer terminal 55 are arranged in the insertion holes 72 . The inner diameter of the insertion hole 72 is slightly larger than the outer diameter of the support 31 so that the support 31 of the receptacle 11 is fitted. In addition, an engaging recess 73 as an engaging portion for engaging the receptacle 11 and the plug 41 is formed along the entire circumference on the inner peripheral surface of the insertion hole 72 on the far side (rear side). . A seal ring contact surface 74 with which the seal ring 35 is brought into contact is formed along the entire circumference of the inner peripheral surface of the opening side (front side) of the insertion hole 72 . Further, the housing 68 is formed by overmolding as will be described later.

(Manufacture of each connector)
The receptacle 11 is manufactured, for example, as follows. First, the inner terminal 12, the intermediate terminal 18 and the outer terminal 24 are formed by pressing a metal plate. Next, a support 30 is formed around the connecting portions 15, 21, 27 of the inner terminal 12, the intermediate terminal 18 and the outer terminal 24, respectively, by insert molding. Specifically, after the connecting portions 15, 21, 27 of the inner terminal 12, the intermediate terminal 18, and the outer terminal 24 are placed in the mold, resin, which is a non-conductive material, is injected into the mold. to form the support 30 . The receptacle 11 is completed by the above.

A method for manufacturing the plug body 42 of the plug 41 is as follows, for example. First, the inner terminal 43, the intermediate terminal 49, and the outer terminal 55 are formed by pressing a metal plate. A support 65 is then formed around the connecting portions 46 , 52 , 58 of the inner terminal 43 , intermediate terminal 49 and outer terminal 55 by insert molding. Specifically, after the connecting portions 46, 52, and 58 of the inner terminal 43, the intermediate terminal 49, and the outer terminal 55 are arranged in the mold, resin, which is a non-conductive material, is injected into the mold. to form the support 65 . By the above, the plug body 42 of the plug 41 is completed.

Here, FIG. 16 shows a mold piece 81 that constitutes a part of the mold used for molding the support 65 of the plug body 42. As shown in FIG. In the process of molding the support 65, a mold piece 81 shown in FIG. 49, and between the contact piece 50 of the intermediate terminal 49 and the contact piece 56 of the outer terminal 55, which are concentrically arranged. In the mold piece 81 , the portion 82 of the inner terminal 43 that is inserted into the contact piece 44 is formed in a columnar shape, and its outer shape is substantially equal to the inner diameter of the contact piece 44 . In addition, the contact piece 44 is formed with two contact protrusions 61 that respectively protrude inward. Therefore, grooves 85 extending in the axial direction from the distal end of the cylindrical portion 82 of the mold piece 81 toward the base end are formed at two locations on the outer peripheral surface of the cylindrical portion 82 of the mold piece 81 . ing. When the cylindrical portion 82 of the mold piece 81 is inserted into the contact portion 44 , the contact convex portion 61 enters the grooves 85 , so that the cylindrical portion 82 of the mold piece 81 is inserted into the contact portion 44 . You can go deep inside. Further, the contact piece 44 is formed with two shielding protrusions 62 protruding inward in the same manner as the contact protrusions 61 . Since each interrupting protrusion 62 is arranged at the same position in the circumferential direction of the contact protrusion 61 and the contact piece 44, when the cylindrical portion 82 of the mold piece 81 is inserted into the contact portion 44, Each groove 85 formed in the cylindrical portion 82 of the mold piece 81 receives the blocking projection 62 . Since each interrupting protrusion 62 is arranged on the rear side of the contact piece 44 of the inner terminal 43 relative to the contact protrusion 61, when the cylindrical portion 82 of the mold piece 81 is inserted into the contact portion 44, , each shielding protrusion 62 is arranged closer to the tip side of the cylindrical portion 82 of the mold piece 81 than each contact protrusion 61 is. Therefore, when resin is injected into the mold, the resin that flows through each groove 85 formed in the cylindrical portion 82 of the mold piece 81 to the tip side of the contact piece 44 is blocked. It is blocked by the convex portion 62 . If there were no interrupting protrusion 62, when resin was injected into the mold, the resin would pass through the groove 85 formed in the cylindrical portion 82 of the mold piece 81, and would flow through the contact piece 44. The resin will flow into the position on the tip side where the contact protrusion 61 is formed. If the resin flows to the tip side of the contact piece 44 , in the finished product of the plug 41 , a streak-like resin piece will be formed in the contact piece 44 , and the resin piece will bend or break, causing the inner terminal of the plug 41 to malfunction. 43 and the contact piece 13 of the inner terminal 12 of the receptacle 11, resulting in poor contact. By forming the interrupting projection 62 on the contact piece 44, it is possible to prevent the formation of such a resin piece, thereby preventing poor contact between the contact piece 44 and the contact piece 13 due to such a resin piece. can do.

Similarly, in the mold piece 81, two grooves 85 formed in a cylindrical portion 83 that is inserted between the contact piece 44 of the inner terminal 43 and the contact piece 50 of the intermediate terminal 49 during resin injection. The resin that tries to flow toward the tip of the contact piece 50 is blocked by the two blocking protrusions 62 formed on the contact piece 50 . As a result, it is possible to prevent a streaky resin piece from being formed in the contact piece 50, and such a resin piece is caught between the contact piece 50 and the contact piece 19, preventing contact between the two contact pieces. It is possible to prevent defects from occurring. Similarly, at the time of resin injection, two grooves 85 formed in a cylindrical portion 84 inserted between the contact piece 50 of the intermediate terminal 49 and the contact piece 56 of the outer terminal 55 in the mold piece 81 are filled. The resin that tries to flow toward the tip of the contact piece 56 is blocked by two blocking projections 62 formed on the contact piece 56 . As a result, it is possible to prevent a streaky resin piece from being formed in the contact piece 56, and such a resin piece is caught between the contact piece 56 and the contact piece 25, preventing contact between the two contact pieces. It is possible to prevent defects from occurring.

(Assembly of connector device)
The connector device 1 is assembled, for example, as follows. In the receptacle 11, the connection piece 14 of the inner terminal 12 is connected to the circuit 3 provided on the upper surface of the substrate 2 by soldering, for example. Also, the connection piece 20 of the intermediate terminal 18 is connected to a part of the circuit 4 provided on the lower surface of the substrate 2 by soldering, for example. Also, the connection pieces 26 of the outer terminals 24 are connected to other parts of the circuit 4 by soldering, for example. On the other hand, in the plug 41, the electric wires 6, 7 and 8 of the cable 5 are connected to the connection pieces 45, 51 and 57 of the inner terminal 43, intermediate terminal 49 and outer terminal 55, respectively, by soldering, for example. After that, the housing 68 is formed by overmolding so as to surround the plug body 42, the ends of the wires 6, 7, 8, and the like. Upon completion of molding of housing 68, plug 41 is completed.

When connecting the receptacle 11 and the plug 41, as shown in FIG. 15, the support 30 of the receptacle 11 is inserted into the insertion hole 72 of the housing 68 to fit them together. When the support 30 is inserted into the insertion hole 72, the contact pieces 13, 19 and 25 of the inner terminal 12, intermediate terminal 18 and outer terminal 24 of the receptacle 11 and the inner terminal 43, intermediate terminal 49 and Each contact piece 44, 50, 56 of the outer terminal 55 is in contact with each other. Further, when the support 30 is inserted into the insertion hole 72, the locking protrusion 33 formed in the support 30 of the receptacle 11 and the locking recess 73 formed in the housing 68 of the plug 41 are locked to each other. and the receptacle 11 and the plug 41 are locked. Also, when the support 30 is inserted into the insertion hole 72, the seal ring 35 contacts the inner surface of the seal ring insertion recess 32 and the seal ring contact surface 74, respectively, and the receptacle 11 and the plug 41 are liquid-tight. to seal.

As described above, in the receptacle 11 of the connector device 1 according to the embodiment of the present invention, the support 30 is formed by an integral resin molded product formed by insert molding. The terminal 12 , the intermediate terminal 18 and the outer terminal 24 can be firmly supported by the support 30 . Similarly, in the plug 41 as well, since the support 65 is formed of an integrated resin molded product by insert molding, the size of the plug 41 can be reduced while the inner terminal 43, the intermediate terminal 49 and the outer terminal 55 are formed. It can be firmly supported by the support 65 . In addition, according to the configuration in which the terminals are supported by a resin molded product molded by insert molding, a structure for firmly supporting three terminals like the receptacle 11 or the plug 41 of the present embodiment, or a structure for supporting four or more multiple terminals. A structure for firmly supporting the terminals can be easily realized.

In addition, in the receptacle 11, the contact piece 13 of the inner terminal 12 is formed in the shape of a covered cylinder (pin shape), and the contact pieces 19 and 25 of the intermediate terminal 18 and the outer terminal 24 are formed in the shape of cylinders. High strength can be ensured for each of the contact pieces 13, 19, and 25 while downsizing the receptacle 11. FIG. Similarly, in the plug 41, the contact pieces 44, 50, 56 of the inner terminal 43, the intermediate terminal 49, and the outer terminal 55 are cylindrically formed. , 56 can ensure high strength. Therefore, it is possible to prevent the contact pieces 13, 19, 25, 44, 50 and 56 from being damaged by repeated insertion and removal of the receptacle 11 and the plug 41, thereby realizing a compact and robust connector device 1. can be done.

In the receptacle 11, the contact piece 13 of the inner terminal 12 is formed in a covered cylindrical shape (outer pin shape), and the contact pieces 18 and 24 of the intermediate terminal 18 and the outer terminal 24 are formed in a cylindrical shape and are arranged concentrically. Similarly, in the plug 41, the contact pieces 44, 50, 56 of the inner terminal 43, intermediate terminal 49 and outer terminal 55 are cylindrically formed and arranged concentrically. Therefore, when the plug 41 is connected to the receptacle 11, the position of the plug 41 in the circumferential direction is not restricted. That is, the plug 41 can be fitted into the receptacle 11 regardless of how the position of the plug 41 in the circumferential direction changes due to the rotation of the plug 41 about the axis A2. can be reliably contacted. Therefore, it is possible to achieve high ease of connection between the receptacle 11 and the plug 41 while miniaturizing the connector device 1 . Further, according to the configuration in which a plurality of cylindrical contact pieces are concentrically arranged, the configuration having three terminals like the receptacle 11 or the plug 41 of the present embodiment, or the configuration having a large number of terminals of four or more. Even if there is, it is possible to achieve high ease of connection between the receptacle and the plug.

Here, in the connector device 1 of this embodiment, for example, the receptacle 11 has an overall length of approximately 5 mm and an outer diameter of approximately 3 mm. For example, the plug 41 has an overall length of approximately 12 mm and an outer diameter of approximately 4 mm. In such a compact connector device 1, as described above, each terminal can be firmly supported, a high strength can be ensured for each contact piece of each terminal, and a high connection between the receptacle 11 and the plug 41 can be achieved. Ease of connection can be realized.

In the receptacle 11 , base end portions of the contact pieces 13 , 19 and 25 of the inner terminal 12 , the intermediate terminal 18 and the outer terminal 24 are embedded in the resin molding forming the support 30 . With this configuration, the support strength of each contact piece 13, 19, 25 by the support 30 can be increased. Similarly, in the plug 41 , the base end portions of the contact pieces 44 , 50 , 56 of the inner terminal 43 , the intermediate terminal 49 and the outer terminal 55 are embedded in the resin molding forming the support 65 . With this configuration, the support strength of each contact piece 44 , 50 , 56 by the support 65 can be increased.

In the connector device 1 , the seal ring 35 provided on the outer periphery of the support 30 of the receptacle 11 can liquid-tightly seal the mutually connected receptacle 11 and plug 41 . As a result, water can be prevented from entering the housing 98 of the plug 41 while the receptacle 11 and the plug 41 are connected to each other, and the waterproof performance of the connector device 1 can be enhanced.

Also, in the connector device 1, the engagement protrusion 33 provided on the outer periphery of the support 30 of the receptacle 11 and the engagement recess 73 provided on the inner periphery of the insertion hole 72 of the housing 68 of the plug 41 By locking, the receptacle 11 and the plug 41 that are connected to each other can be locked, and the connection state of the two can be maintained.

Also, in the plug 41, the blocking protrusions 62 formed on the contact pieces 44, 50 and 56 of the inner terminal 43, the intermediate terminal 49 and the outer terminal 55 prevent injection into the mold when the support 65 is molded. It is possible to prevent the resin from flowing to the tip side of the contact pieces 44 , 50 , 56 . Thereby, as described above, it is possible to prevent the occurrence of poor contact between the contact pieces.

In the above embodiment, the receptacle 11 and the plug 41 each have three concentrically arranged terminals. Four or more terminals may be provided.

In the above embodiment, the inner terminal 12, the intermediate terminal 18 and the outer terminal 24 of the receptacle 11 are inserted into the inner terminal 43, the intermediate terminal 49 and the outer terminal 55 of the plug 41, respectively. As an example, the inner terminal 43, the intermediate terminal 49 and the outer terminal 55 of the plug 41 are inserted into the inner terminal 12, the intermediate terminal 18 and the outer terminal 24 of the receptacle 11, respectively. good too.

In the above embodiment, the case where the seal ring 35 is attached to the outer peripheral portion of the support 30 of the receptacle 11 was taken as an example, but the seal ring 35 is attached to the inner peripheral portion of the insertion hole 72 of the housing 68 of the plug 41. good too.

Further, in the above-described embodiment, the locking convex portion 33 is formed on the outer peripheral portion of the support 30 of the receptacle 11 and the locking concave portion 73 is formed on the inner peripheral portion of the insertion hole 72 of the housing 68 of the plug 41 as an example. As mentioned above, a locking recess may be formed on the outer periphery of the support 30 of the receptacle 11 and a locking projection may be formed on the inner periphery of the insertion hole 72 of the housing 68 of the plug 41 .

In the above embodiment, the contact pieces 44, 50, and 56 of the inner terminal 43, the intermediate terminal 49, and the outer terminal 55 of the plug 41 are formed with two pairs of contact projections 61 and blocking projections 62, respectively. As mentioned above, the contact piece 44 , 50 or 56 may be provided with three or more pairs of contact protrusions 61 and blocking protrusions 62 .

Further, in the above embodiment, the contact pieces 44, 50 and 56 of the inner terminal 43, the intermediate terminal 49 and the outer terminal 55 of the plug 41 are formed with the contact projections 61 and blocking projections 62 protruding inward. As an example, instead of this, the contact pieces 13, 19, and 25 of the inner terminal 12, the intermediate terminal 18, and the outer terminal 24 of the receptacle 11 are formed with contact projections and blocking projections projecting outward. good too.

Also, the connected objects to be connected to the receptacle 11 and the plug 41 are not limited to substrates or electric wires. Moreover, in the above-described embodiments, the case where the connector device is configured by a combination of the receptacle connected to the board and the plug to which the electric wire of the cable is connected was taken as an example, but the present invention is not limited to this. The connector device of the present invention may be configured by a combination of a jack to which wires of a cable are connected and a plug to which wires of another cable are connected.

In addition, the present invention can be modified as appropriate within the scope not contrary to the gist or idea of the invention that can be read from the scope of claims and the entire specification, and the plug or receptacle that accompanies such modifications is also the technical concept of the present invention. include.

1 connector device 3, 4 circuits
6, 7, 8 electric wire
11 receptacle 12 inner terminal (first receptacle terminal)
Reference Signs List 13, 19, 25 contact piece 14, 20, 26 connection piece 15, 21, 27 connecting portion 18 intermediate terminal (second receptacle terminal)
24 outer terminal (third receptacle terminal)
30 support (receptacle support)
33 locking projection (locking portion)
35 seal ring (seal member)
41 plug 43 inner terminal (first plug terminal)
44, 50, 56 contact piece 45, 51, 57 connection piece 46, 52, 58 connecting portion 49 intermediate terminal (second plug terminal)
55 outer terminal (third plug terminal)
61 contact protrusion (first protrusion)
62 blocking projection (second projection)
65 support (plug support)
68 housing 69 accommodating portion 72 insertion hole 73 locking recess (locking portion)

Claims (9)

A plug attached to a cable and connected to a mating connector,
a first plug terminal, a second plug terminal, a third plug terminal, and a plug support supporting the first plug terminal, the second plug terminal and the third plug terminal; death,
The first plug terminal is formed in a cylindrical shape having an axis extending in the front-rear direction, and is formed in the shape of a flat plate extending in the front-rear and left-right directions and a contact piece that contacts the first mating terminal of the mating connector. provided with a connection piece to which the first electric wire of the cable is connected, and a connecting portion for connecting the contact piece of the first plug terminal and the connection piece of the first plug terminal,
The second plug terminal has a cylindrical shape and is arranged concentrically with the contact piece of the first plug terminal on the outer peripheral side of the contact piece of the first plug terminal. a contact piece that contacts the mating terminal of the second plug terminal; a connection piece that is formed in a flat plate shape extending in the front, rear, left, and right directions and to which a second electric wire of the cable is connected; a contact piece of the second plug terminal and the second a connecting portion for connecting the connection pieces of the two plug terminals,
The third plug terminal has a cylindrical shape and is arranged concentrically with the contact piece of the second plug terminal on the outer peripheral side of the contact piece of the second plug terminal. a contact piece that contacts the mating terminal of the plug terminal; a connection piece that is formed in a flat plate shape extending in the front, rear, left, and right directions and to which the third electric wire of the cable is connected; the contact piece of the third plug terminal and the third and a connecting portion for connecting the connecting pieces of the plug terminals of 3,
The connecting piece of the first plug terminal, the connecting piece of the second plug terminal, and the connecting piece of the third plug terminal are arranged in the same position in the front-rear direction, separated from each other, and parallel to each other. is placed in
The plug support is formed by insert molding in a state where the connection portion of the first plug terminal, the connection portion of the second plug terminal, and the connection portion of the third plug terminal are embedded in the plug support. A plug, characterized in that it is a resin molded product integrated with the connection portion of the first plug terminal, the connection portion of the second plug terminal, and the connection portion of the third plug terminal. 2. The plug of claim 1, wherein proximal portions of said first plug terminal, said second plug terminal and said third plug terminal are each recessed within said plug support. The first mating terminal is provided with a contact piece formed in a pin shape or a cylindrical shape, and the second mating terminal is formed in a cylindrical shape. is provided with a contact piece arranged concentrically with the contact piece of the first mating terminal, and the third mating terminal is formed in a cylindrical shape and is provided on the outer peripheral side of the contact piece of the second mating terminal. a contact piece arranged concentrically with the contact piece of the second mating terminal;
When connecting the plug and the mating connector, the contact piece of the first mating terminal is inserted inside the contact piece of the first plug terminal, and the contact piece of the second mating terminal is inserted into the second contact piece of the second mating terminal. and the contact piece of the third mating terminal is inserted inside the contact piece of the third plug terminal,
Each contact piece of the first plug terminal, the second plug terminal and the third plug terminal is provided with a first protrusion and a second protrusion,
In each contact piece of the first plug terminal, the second plug terminal and the third plug terminal, the first protrusion and the second protrusion extend from a part of the contact piece in the circumferential direction. The first protrusion and the second protrusion protrude radially inward, and the first protrusion and the second protrusion are arranged at the same position in the circumferential direction of the contact piece, and the second protrusion is closer to the contact piece than the first protrusion. The height of the second protrusion is equal to or greater than the height of the first protrusion, and the width of the second protrusion is the width of the first protrusion. and a portion of the second protrusion is embedded in the plug support,
When the plug and the mating connector are connected, the first protrusion provided on the contact piece of the first plug terminal contacts the contact piece of the first mating terminal, and the second plug is connected. The first projection provided on the contact piece of the terminal contacts the contact piece of the second mating terminal, and the first projection provided on the contact piece of the third plug terminal contacts the third plug terminal. 3. The plug according to claim 2, wherein the plug is in contact with a contact piece of the mating terminal. The first mating terminal is provided with a contact piece formed in a pin shape or a cylindrical shape, and the second mating terminal is formed in a cylindrical shape. is provided with a contact piece arranged concentrically with the contact piece of the first mating terminal, and the third mating terminal is formed in a cylindrical shape and is provided on the outer peripheral side of the contact piece of the second mating terminal. a contact piece arranged concentrically with the contact piece of the second mating terminal;
When connecting the plug and the mating connector, the contact piece of the first plug terminal is inserted inside the contact piece of the first mating terminal, and the contact piece of the second plug terminal is inserted into the second contact piece. and the contact piece of the third plug terminal is inserted inside the contact piece of the third mating terminal,
Each contact piece of the first plug terminal, the second plug terminal and the third plug terminal is provided with a first protrusion and a second protrusion,
In each contact piece of the first plug terminal, the second plug terminal and the third plug terminal, the first protrusion and the second protrusion extend from a part of the contact piece in the circumferential direction. The first protrusion and the second protrusion protrude radially outward, and the first protrusion and the second protrusion are arranged at the same position in the circumferential direction of the contact piece, and the second protrusion is closer to the contact piece than the first protrusion. The height of the second protrusion is equal to or greater than the height of the first protrusion, and the width of the second protrusion is the width of the first protrusion. and a portion of the second protrusion is embedded in the plug support,
When the plug and the mating connector are connected, the first protrusion provided on the contact piece of the first plug terminal contacts the contact piece of the first mating terminal, and the second plug is connected. The first projection provided on the contact piece of the terminal contacts the contact piece of the second mating terminal, and the first projection provided on the contact piece of the third plug terminal contacts the third plug terminal. 3. The plug according to claim 2, wherein the plug is in contact with a contact piece of the mating terminal. The first plug terminal, the second plug terminal, the third plug terminal, the plug support, the end portion of the first electric wire connected to the connecting piece of the first plug terminal, the third a housing that accommodates an end of the second electric wire connected to the connecting piece of the second plug terminal and an end of the third electric wire connected to the connecting piece of the third plug terminal;
The housing is overmolded to form the plug support, the end of the first electric wire connected to the connecting piece of the first plug terminal, and the second electric wire connected to the connecting piece of the second plug terminal. 5. A resin molded product integrated with the end of the second electric wire and the end of the third electric wire connected to the connecting piece of the third plug terminal. The plug described in A receptacle attached to a substrate provided with a circuit and connected to a mating connector,
a first receptacle terminal, a second receptacle terminal, a third receptacle terminal, and a receptacle support supporting the first receptacle terminal, the second receptacle terminal and the third receptacle terminal; death,
The first receptacle terminal has a pin-like or cylindrical contact piece having an axis extending in the front-rear direction, the contact piece contacting the first mating terminal of the mating connector, and a flat plate extending in the front-rear and left-right directions. a connecting piece formed in a shape and connected to the first part of the circuit; and a connecting portion connecting the contact piece of the first receptacle terminal and the connecting piece of the first receptacle terminal,
The second receptacle terminal has a cylindrical shape and is arranged concentrically with the contact piece of the first receptacle terminal on the outer peripheral side of the contact piece of the first receptacle terminal. a contact piece that contacts the mating terminal of the second receptacle terminal; a connection piece that is formed in a flat plate shape extending in the front, rear, left and right directions and is connected to the second portion of the circuit; a contact piece of the second receptacle terminal and the second receptacle terminal; and a connecting portion for connecting the connecting piece of the receptacle terminal of
The third receptacle terminal has a cylindrical shape and is arranged concentrically with the contact piece of the second receptacle terminal on the outer peripheral side of the contact piece of the second receptacle terminal. a contact piece that contacts the mating terminal of the third receptacle terminal; a connection piece that is formed in a flat plate shape extending in the front, rear, left, and right directions and is connected to the third portion of the circuit; a contact piece of the third receptacle terminal and the third and a connecting portion for connecting the connecting piece of the receptacle terminal of
The connection piece of the first receptacle terminal, the connection piece of the second receptacle terminal, and the connection piece of the third receptacle terminal are arranged in the same position in the front-rear direction, separated from each other, and parallel to each other. is placed in
The receptacle support has a state in which the connecting portion of the first receptacle terminal, the connecting portion of the second receptacle terminal, and the connecting portion of the third receptacle terminal are embedded in the receptacle support by insert molding. A receptacle, wherein the connecting portion of the first receptacle terminal, the connecting portion of the second receptacle terminal, and the connecting portion of the third receptacle terminal are integrally formed of a resin molding. 7. The receptacle of claim 6, wherein proximal portions of said first receptacle terminal, said second receptacle terminal and said third receptacle terminal are each embedded within said receptacle support. A cylindrical contact piece is provided on the first mating terminal, and a cylindrical contact piece is provided on the second mating terminal. A contact piece arranged concentrically with the contact piece of the first mating terminal is provided, the third mating terminal is formed in a cylindrical shape, and the second mating terminal is provided on the outer peripheral side of the contact piece of the second mating terminal. a contact piece arranged concentrically with the contact piece of the mating terminal of the
When connecting the receptacle and the mating connector, the contact piece of the first receptacle terminal is inserted inside the contact piece of the first mating terminal, and the contact piece of the second receptacle terminal is inserted into the second contact piece. is inserted inside the contact piece of the mating terminal, the contact piece of the third receptacle terminal is inserted inside the contact piece of the third mating terminal,
Each contact piece of the first receptacle terminal, the second receptacle terminal, and the third receptacle terminal is provided with a first projection and a second projection,
In each contact piece of the first receptacle terminal, the second receptacle terminal, and the third receptacle terminal, the first convex portion and the second convex portion extend from a part of the contact piece in the circumferential direction. The first protrusion and the second protrusion protrude radially outward, and the first protrusion and the second protrusion are arranged at the same position in the circumferential direction of the contact piece, and the second protrusion is closer to the contact piece than the first protrusion. The height of the second protrusion is equal to or greater than the height of the first protrusion, and the width of the second protrusion is the width of the first protrusion. and a portion of the second protrusion is embedded in the receptacle support,
When the receptacle and the mating connector are connected, the first projection provided on the contact piece of the first receptacle terminal contacts the contact piece of the first mating terminal, and the second receptacle is connected. The first projection provided on the contact piece of the terminal contacts the contact piece of the second mating terminal, and the first projection provided on the contact piece of the third receptacle terminal contacts the third contact piece. 8. The receptacle according to claim 7, wherein the receptacle contacts the contact piece of the mating terminal. A cylindrical contact piece is provided on the first mating terminal, and a cylindrical contact piece is provided on the second mating terminal. A contact piece arranged concentrically with the contact piece of the first mating terminal is provided, the third mating terminal is formed in a cylindrical shape, and the second mating terminal is provided on the outer peripheral side of the contact piece of the second mating terminal. a contact piece arranged concentrically with the contact piece of the mating terminal of the
When connecting the receptacle and the mating connector, the contact piece of the first mating terminal is inserted inside the contact piece of the first receptacle terminal, and the contact piece of the second mating terminal is inserted into the second contact piece. is inserted inside the contact piece of the receptacle terminal, the contact piece of the third mating terminal is inserted inside the contact piece of the third receptacle terminal,
Each contact piece of the first receptacle terminal, the second receptacle terminal, and the third receptacle terminal is provided with a first projection and a second projection,
In each contact piece of the first receptacle terminal, the second receptacle terminal, and the third receptacle terminal, the first convex portion and the second convex portion extend from a part of the contact piece in the circumferential direction. The first protrusion and the second protrusion protrude radially inward, and the first protrusion and the second protrusion are arranged at the same position in the circumferential direction of the contact piece, and the second protrusion is closer to the contact piece than the first protrusion. The height of the second protrusion is equal to or greater than the height of the first protrusion, and the width of the second protrusion is the width of the first protrusion. and a portion of the second protrusion is embedded in the receptacle support,
When the receptacle and the mating connector are connected, the first projection provided on the contact piece of the first receptacle terminal contacts the contact piece of the first mating terminal, and the second receptacle is connected. The first projection provided on the contact piece of the terminal contacts the contact piece of the second mating terminal, and the first projection provided on the contact piece of the third receptacle terminal contacts the third contact piece. 8. The receptacle according to claim 7, wherein the receptacle contacts the contact piece of the mating terminal.

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