JP5692914B2 - connector - Google Patents

Description

  The present invention relates to a connector to which a terminal is inserted and mounted in a housing.

  As a connector, a connector in which a metal terminal is inserted into a cavity formed in a resin housing is generally used. And the terminal inserted in this cavity is prevented from detaching with respect to the housing by the lance formed in the housing engaging with the engaging portion formed on the terminal (for example, Patent Documents 1 to 3). reference).

JP 2005-243359 A JP 2005-174830 A JP 2008-159383 A

  In the connector having the above structure, it is necessary to form a latching portion that can latch the lance of the housing in the terminal, but this latching portion securely latches the lance when it is inserted into the cavity to a predetermined position. Therefore, the cost is increased due to the complexity of the mold for forming the terminal, and further, the terminal itself is increased in size. Further, if a locking part such as a large hole or notch is formed in the terminal, the strength of the terminal is reduced.

  In particular, in the terminal provided at the end of the coaxial cable, the periphery of the inner terminal is covered with the outer terminal to obtain a shielding property. However, if a locking part such as a large hole or notch is formed in the outer terminal, the entire circumference Insufficient shielding occurs, impedance mismatch occurs, and it becomes difficult to ensure good performance as a high-frequency connector.

  The present invention has been made in view of the above-described circumstances, and the object thereof is to increase impedance matching and improve high-frequency performance without incurring a cost increase and an increase in size, and without defects such as a decrease in strength. It is to provide a connector that can be used.

In order to achieve the above-described object, the connector according to the present invention is characterized by the following (1) to (3).
(1) A connector including a housing having a cavity, and a terminal inserted into the cavity and accommodated therein,
The terminal has a terminal body molded from a conductive material, and a resin locking block integrally formed on the outer periphery of the terminal body,
A lance for locking the locking block of the terminal inserted in the cavity is formed in the housing.
(2) In the connector configured as described in (1) above, a recess is formed in the terminal body at a location where the locking block is formed.
(3) In the connector having the configuration of (1) or (2), the terminal includes an outer terminal in which the terminal body is formed in a cylindrical shape and is electrically connected to an outer conductor of the coaxial cable.

In the connector having the configuration (1), the lance of the housing is locked to the locking block integrally formed on the outer periphery of the terminal body, and the terminal is accommodated and held in the cavity of the housing. There is no need to form a large hole or notch to which the is locked. Thereby, the cost increase by the complexity of a metal mold | die, enlargement, and strength reduction can be suppressed. Further, when the terminal is an outer terminal, it is possible to suppress a decrease in shielding property due to the formation of a large hole or notch, improve impedance matching, and improve high-frequency performance.
In the connector having the above configuration (2), the locking block can be bitten into the recessed portion formed in the terminal main body and can be reliably integrated.
In the connector having the above configuration (3), there is no need to form a large hole or notch for locking the lance of the housing in the cylindrical terminal body constituting the outer terminal. In addition, it is possible to improve the high frequency performance by improving impedance matching.

  According to the present invention, it is possible to provide a connector capable of improving high-frequency performance by increasing impedance matching without causing an increase in cost and size, and without causing problems such as a decrease in strength.

  The present invention has been briefly described above. Further, details of the present invention will be further clarified by reading through the modes for carrying out the invention described below with reference to the accompanying drawings.

It is the perspective view which looked at the connector concerning this embodiment in section. It is the perspective view which looked at the coaxial terminal which comprises the connector which concerns on this embodiment in cross section. It is a perspective view of the inner terminal which comprises a coaxial terminal. It is a perspective view of the coaxial terminal which comprises the connector which concerns on this embodiment. It is a perspective view before shaping | molding of the latching block of the coaxial terminal which comprises the connector which concerns on this embodiment. FIGS. 6A and 6B are diagrams illustrating a manufacturing process of a coaxial terminal, in which FIG. 6A is a perspective view illustrating a molding process of an inner terminal, and FIG. 6B is a perspective view illustrating a molding process of an outer terminal. It is a perspective view of the metal mold | die and inner terminal explaining the formation process of an inner terminal. It is a perspective view of the metal mold | die and outer terminal explaining the formation process of an outer terminal.

  Hereinafter, an example of an embodiment according to the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a connector according to this embodiment in cross-sectional view, FIG. 2 is a perspective view of a coaxial terminal constituting the connector according to this embodiment, and FIG. 3 is a perspective view of an inner terminal constituting the coaxial terminal. 4 is a perspective view of a coaxial terminal constituting the connector according to this embodiment, and FIG. 5 is a perspective view of the coaxial terminal constituting the connector according to this embodiment before molding a locking block.

  As shown in FIG. 1, the connector 11 according to the present embodiment is a coaxial connector provided at the end of the coaxial cable 1.

  The connector 11 includes a housing 21 and a coaxial terminal 31 incorporated in the housing 21.

  As shown in FIG. 2, the coaxial terminal 31 includes an inner terminal 40 and an outer terminal (terminal) 50, and each is connected to the coaxial cable 1.

  The coaxial cable 1 to which the coaxial terminal 31 is connected includes a core wire 2, an insulating layer 3 that is extrusion-coated around the core wire 2, an external conductor 4 provided around the insulating layer 3, and a periphery of the external conductor 4. And an outer cover 5 coated on the surface.

  As shown in FIG. 3, the inner terminal 40 is an inner terminal formed by pressing a rectangular piece made of a metal plate such as copper, which is a rectangular conductive material, into a thin cylindrical shape with the longitudinal direction as the central axis. A terminal main body 41 is provided, and is crimped and connected to the core wire 2 exposed at the end of the coaxial cable 1.

  Further, the inner terminal body 41 of the inner terminal 40 is integrally provided with an insulator 42 formed of synthetic resin. The insulator 42 is formed in a circular cross section, and by forming flange portions 43 at both ends thereof, a groove portion 44 that is recessed in the circumferential direction is formed in an intermediate portion in the axial direction.

  As shown in FIG. 4, the outer terminal 50 has an outer terminal main body (terminal main body) 51 formed in a cylindrical shape, and is wound around the portion of the outer conductor 4 exposed at the end of the coaxial cable 1. The end portion of the coaxial cable 1 is crimped and connected so as to cover the portion of the outer conductor 4 exposed at the end portion of the coaxial cable 1.

  The outer terminal body 51 of the outer terminal 50 is formed by pressing a rectangular piece made of a metal plate such as copper, which is a rectangular conductive material, into a thin cylindrical shape with the longitudinal direction as the central axis.

  The outer terminal body 51 is integrally provided with a locking block 52 formed of synthetic resin. The locking block 52 is formed in a substantially circular cross section, and a locking convex portion 53 protruding to the outer peripheral side is formed on a part of the periphery. The locking block 52 is formed in the same position as the insulator 42 of the inner terminal 40 in the axial direction, whereby the locking block 52 is provided on the outer peripheral side of the insulator 42.

  As shown in FIG. 5, the outer terminal main body 51 of the outer terminal 50 is formed with a plurality (three) of recessed portions 54 at intervals in the circumferential direction at the locking position of the locking block 52. The locking block 52 is formed on the outer periphery of the outer terminal 50 at the position where these depressions 54 are formed. On the inner peripheral surface of the outer terminal main body 51, there are protrusions 54 a that protrude toward the inner peripheral side by forming recesses 54, and these protrusions 54 a are formed on the insulator 42 of the inner terminal 40. It arrange | positions in the formed groove part 44 (refer FIG. 2). Thereby, the outer terminal main body 51 and the insulator 42 of the inner terminal 40 are engaged with each other, so that the inner terminal 40 and the outer terminal 50 are fixed.

  The housing 21 that accommodates the coaxial terminal 31 having the above-described structure is formed of synthetic resin, and has a cavity 22 that penetrates forward and backward. A coaxial terminal 31 is inserted into and accommodated in the cavity 22 from a terminal insertion port 22 a on the rear end 21 a side of the housing 21.

  The housing 21 is formed with a step portion 23 at an intermediate portion in the axial direction, and the inner diameter of the cavity 22 is made small on the tip 21b side with the step portion 23 as a boundary.

  Further, a lance 24 is formed on the rear end 21 a side of the upper portion forming the cavity 22 with respect to the step portion 23 in the axial direction of the housing 21. The lance 24 is connected to the rear end 21 a side of the housing 21 and extends to the front end 21 b side of the housing 21, and a claw portion 25 protruding to the inner side of the cavity 22 is formed in the vicinity of the front end. .

  In the connector 11, in order to accommodate the coaxial terminal 31 in the housing 21, the coaxial terminal 31 is inserted into the cavity 22 from the terminal insertion port 22 a on the rear end 21 a side of the housing 21.

  At this time, the coaxial terminal 31 is inserted into the cavity 22 with the locking protrusion 53 formed on the locking block 52 of the outer terminal 50 facing the lance 24 side of the housing 21.

  As described above, when the coaxial terminal 31 is inserted into the cavity 22, the locking projection 53 of the locking block 52 of the coaxial terminal 31 comes into contact with and slides on the claw portion 25 of the lance 24, and the claw portion 25 moves to the housing 21. The lance 24 is elastically deformed by being pushed outward.

  When the locking block 52 of the coaxial terminal 31 comes into contact with the step portion 23 of the housing 21, the elastically deformed lance 24 is restored, and the claw portion 25 is formed on the rear end side of the locking block 52 of the coaxial terminal 31. Enter and lock. Thereby, the coaxial terminal 31 is accommodated in the cavity 22 in a state in which the coaxial terminal 31 is prevented from coming out of the cavity 22.

  Thus, according to the connector according to the above embodiment, the lance 24 of the housing 21 is locked to the locking block 52 formed integrally with the outer periphery of the outer terminal main body 51, and the outer terminal 50 is placed in the cavity 22 of the housing 21. Therefore, it is not necessary to form a large hole or notch for locking the lance 24 in the outer terminal main body 51 itself. Thereby, the cost increase by the complexity of a metal mold | die, enlargement, and strength reduction can be suppressed.

  Further, since it is not necessary to form a large hole or notch for locking the lance 24 of the housing 21 in the cylindrical outer terminal main body 51 constituting the outer terminal 50, the cylindrical outer terminal main body 51 extends over the entire circumference. It is possible to shield well, and it is possible to improve impedance matching and improve high frequency performance.

  Moreover, the locking block 52 can be bitten into the recess 54 formed in the outer terminal main body 51 and can be reliably integrated. Further, by forming the recessed portion 54, the protruding portion 54 a that protrudes to the inner peripheral side of the outer terminal main body 51 is disposed in the groove portion 44 formed in the insulator 42 of the inner terminal 40. Accordingly, the inner terminal 40 and the outer terminal 50 can be reliably fixed by engaging the outer terminal body 51 and the insulator 42 of the inner terminal 40 with each other without providing a separate fixing structure.

  Next, the case where the coaxial terminal 31 is manufactured will be described.

  6A and 6B are diagrams showing a manufacturing process of the coaxial terminal, in which FIG. 6A is a perspective view for explaining the inner terminal molding process, and FIG. 6B is a perspective view for explaining the outer terminal molding process. 7 is a perspective view of a mold and an inner terminal for explaining a molding process of the inner terminal, and FIG. 8 is a perspective view of a mold and an outer terminal for explaining the molding process of the outer terminal.

(Inner terminal molding)
As shown in FIG. 6A, the inner terminal main body 41 of the inner terminal 40 is formed by pressing the terminal plate portion 102 supplied in the state of a chain terminal connected to the carrier 101 with a press mold, and has a substantially U-shaped cross section. Shaped into a letter shape. A fitting hole 103 for fitting a convex portion (not shown) of a transport device such as a robot arm used when assembling the connector is juxtaposed in the longitudinal direction in the carrier 101. When the inner terminal main body 41 is formed, the entire chain terminal is movable in a state where the convex portion of the transport device is fitted in the fitting hole 103.

  The core wire 2 of the coaxial cable 1 is inserted and disposed in the inner terminal body 41 having a substantially U-shaped cross section, and is crimped by a press mold to connect the inner terminal body 41 to the core wire 2.

  Next, as shown in FIG. 7, in order to form the insulator 42, the upper die 106 and the lower die 107 in which the semicircular holes 104 are formed are butted from the upper and lower sides of the inner terminal body 41, and the upper die 106 and A molten resin material (insulating material) is injected into the injection space formed from the semicircular hole 104 of the lower mold 107.

  When the resin material is cured, the upper mold 106 is raised, and the lower mold 107 is lowered to remove the mold. Thereby, the inner terminal 40 in which the insulator 42 is provided on the inner terminal body 41 is formed by hoop molding, and at the same time, the inner terminal 40 is crimped and connected to the core wire 2 of the coaxial cable 1.

(Outer terminal molding)
As shown in FIG. 6B, the outer terminal main body 51 of the outer terminal 50 is formed by pressing a terminal plate portion 112 supplied in the state of a chain terminal connected to the carrier 111 with a press mold so as to have a substantially U-shaped cross section. Shaped into a letter shape. The carrier 111 is provided with a fitting hole 113 arranged in the longitudinal direction for fitting a convex portion (not shown) of a transport device such as a robot arm used at the time of assembling the connector. When the outer terminal main body 51 is molded, the entire chain terminal is movable in a state where the convex portion of the transport device is fitted in the fitting hole 113.

  The inner terminal 40 connected to the end of the coaxial cable 1 and the end of the coaxial cable 1 are inserted into the outer terminal main body 51 having a substantially U-shaped cross section. The coaxial cable 1 has the outer conductor 4 exposed at its end.

  After the inner terminal 40 and the end of the coaxial cable 1 are inserted and arranged in the outer terminal body 51 having a substantially U-shaped cross section, it is crimped by a press mold, and the outer end is placed around the end of the coaxial cable 1 and the inner terminal 40. The terminal body 51 is molded and attached in a cylindrical shape so as to be wound. In addition, a plurality of recesses 54 are formed at intervals in the circumferential direction at the molding position of the locking block 52 in the outer terminal main body 51 by this pressing. When forming this hollow part 54, it presses to such an extent that the hole which penetrates the front and back of the outer terminal main body 51 is not formed. A protrusion 54 a that protrudes from the inner peripheral surface of the outer terminal main body 51 by forming the recess 54 is disposed in a groove 44 formed in the insulator 42 of the inner terminal 40. Thereby, the outer terminal main body 51 and the insulator 42 of the inner terminal 40 are engaged with each other, so that the inner terminal 40 and the outer terminal 50 are securely fixed.

  Next, in order to mold the locking block 52, as shown in FIG. 8, the upper mold 116 and the lower mold 117 in which the semicircular holes 114 are formed are abutted from the upper and lower sides of the outer terminal body 51, and these upper molds 116 are brought together. A molten resin material (insulating material) is injected into the injection space formed from the semicircular hole 114 of the lower mold 117. The semi-circular hole 114 of the upper mold 116 is formed with a recess that forms the locking projection 53 of the locking block 52.

  When the resin material is cured, the upper mold 116 is raised and the lower mold 117 is lowered to remove the mold. Thereby, the outer terminal 50 in which the locking block 52 is provided on the outer terminal body 51 is formed by hoop molding, and at the same time, the outer terminal 50 is crimped and connected to the end of the coaxial cable 1.

  As described above, by forming the inner terminal 40 and the outer terminal 50 in order, the coaxial terminal 31 that is accommodated in the cavity 22 of the housing 21 and constitutes the connector 11 is obtained.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

1 Coaxial cable 4 Outer conductor 11 Connector 21 Housing 22 Cavity 24 Lance 50 Outer terminal (terminal)
51 Outer terminal body (terminal body)
52 Locking block 54 Recessed part

Claims (3)

A connector comprising a housing having a cavity and a terminal inserted into and accommodated in the cavity,
The terminal has a terminal body molded from a conductive material, and a resin locking block integrally formed on the outer periphery of the terminal body,
The connector, wherein the housing is formed with a lance for locking the locking block of the terminal inserted into the cavity.   2. The connector according to claim 1, wherein the terminal main body has a recessed portion formed at a position where the locking block is formed.   The connector according to claim 1, wherein the terminal includes an outer terminal in which the terminal body is formed in a cylindrical shape and is electrically connected to an outer conductor of the coaxial cable.

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