JPH0719100Y2 - Contact for coaxial connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a contact for a coaxial connector that is electrically connected to a coaxial cable.

[Prior Art] As an example of a conventional coaxial connector, there is a coaxial connector shown in FIGS. 4 to 6. The coaxial cable 1 is connected to the coaxial connector. The coaxial cable 1 has a center conductor 1c and an outer conductor 1a. An electrically insulating first coating portion (not shown) is interposed between the central conductor 1c and the outer conductor 1a. The outer peripheral surface of the outer conductor 1a is covered with an electrically insulating second covering portion 1b. Outer conductor 1a
Is made by braiding conductive thin wires.

The coaxial connector has a clamp 3 for fixing the outer conductor 1a, a gasket 5 for tightly adhering to the second coating portion of the coaxial cable 1 to form a waterproof structure, and the gasket 5 is uniformly compressed to prevent twisting and damage. It has a washer 7 and a body 9 as an outer shell part of the coaxial connector. The clamp 3, the gasket 5 and the washer 7 are integrally fastened to the body 9 by screwing with a nut 11.

A center contact 13 is connected to the center conductor 1c. The center contact 13 is positioned by the bushing 15a or 15b. The center contact 13 is insulated and held by the insulator 17 at the center of the body 9.

Such a coaxial cable 1 is end-processed at one end and connected to the coaxial connector. That is, coaxial cable 1
The second covering portion 1b is peeled off from one end of the outer conductor 1a, and the braided state of the outer conductor 1a is loosened and then straightly formed. Further, one end portion of the coaxial cable 1 is formed in conformity with the clamp shape of the outer conductor 1a, and the outer conductor 1a is cut to a specified size and connected to the coaxial connector.

[Problems to be Solved by the Invention] However, in the connection and wiring work of the coaxial cable 1, the work of connecting the outer conductor 1a and the work of fixing the outer coating portion 1b are separately performed. Therefore, there is a problem that these operations of the coaxial cable 1 require a lot of time and a large number of parts are used.

Therefore, the work of connecting the coaxial cable 1 and the coaxial connector as described above is not suitable for mass production because it takes time to process one end portion of the coaxial cable 1, that is, the terminal.

Further, there is a problem that the number of parts is large and the workability is poor in the assembling work of the coaxial connector.

Therefore, an object of the present invention is to provide a contact for a coaxial connector, which can shorten the processing time of the end of the coaxial cable, reduce the number of parts used, and handle and reduce the price. is there.

[Means for Solving the Problems] According to the present invention, an electrically insulating first coating portion interposed between the center conductor and the outer conductor and a second coating portion coating the outer conductor are provided. A conductive contact included in a coaxial connector that is electrically connected to a coaxial cable that has a crimping portion for crimping to the outer conductor, and for holding the second covering portion that is connected to the crimping portion. And a plug portion extending from the crimping portion for fixing a conductive center contact connected to the center conductor via an insulator, the crimping portion including the second covering portion. A crimp piece that breaks through and contacts the outer conductor, and a second contact portion that opposes the crimp piece and breaks through the second covering portion, presses the outer conductor toward the crimp piece, and contacts the outer conductor with a repulsive force. Having a pressing piece A characteristic coaxial connector contact is obtained.

[Embodiment] FIG. 1 shows a coaxial connector contact according to an embodiment of the present invention, and FIGS. 2 and 3 show a state in which the coaxial connector contact of FIG. 1 is connected to a coaxial cable. In this embodiment, the same parts as those of the coaxial cable 1 shown in FIG.

With reference to FIGS. 1 to 3, the coaxial connector contact is electrically connected to a coaxial cable (including a shielded cable in this embodiment).

On the other hand, the contact 21 is incorporated in the coaxial connector. The contact 21 has a crimp portion 23 for crimping to the outer conductor 1a on one side in the longitudinal direction, and a holding portion 25 connected to the crimp portion 23 and for holding the second covering portion 1b. ing. A cylindrical plug portion 27 extends from the pressure-bonding portion 23 on the other side of the pressure-bonding portion 23, that is, on the side opposite to the holding portion 25. The plug portion 27 is a portion extended from the crimp portion 23 for fixing a conductive center contact 29 such as a socket contact connected to the center conductor 1c via an insulator 31. The insulator 31 guides the insertion of the mating outer conductor incorporated in the mating connector (not shown).

In addition, an insertion hole 33 formed on one side for insertion of a center contact (not shown) on the other side such as a pin contact which is electrically insulated and incorporated into the outer conductor on the other side.
I will guide you from. The center conductor 1c is inside the insulator 31 and is electrically insulated from the outer conductor 1a by the insulator 31. In addition, this insulator
Reference numeral 31 mechanically holds one end portion of the plug portion 27, that is, the tip end portion of the coaxial cable 1, and also holds the center contact 1c. Further, the plug portion 27 is formed with a contact spring piece 35 (see FIG. 1) that receives the outer conductor of the mating connector. The contact spring piece 35 is formed by notching the plug portion 27 in the longitudinal direction, and one end of the contact spring piece 35 has a plug portion 27.
, And the other end is slightly bent inside the plug portion 27.

Further, the crimping portion 23 breaks through the second covering portion 1b and the outer conductor 1a.
A pair of crimping pieces 37 that contact the crimping piece 37 and a pair of pressing pieces 39 that oppose the crimping piece 37 and press the outer conductor 1a toward the crimping piece 37.
And have. The crimping piece 37 is formed by cutting and raising the bottom surface portion 41 of the contact 21. The pressing piece 39 extends from the bottom surface portion 41 of the contact 21 to the outside orthogonal to the crimping piece 37. The holding portion 25 has a pair of holding pieces 43 and extends in the same manner as the pressing piece 39.

By the way, the contact 21 is formed by punching a thin metal plate and then bending it to obtain the shape shown in FIG.

Next, the work of connecting the contact 21 to the coaxial cable 1 will be described below.

The coaxial cable 1 of FIG. 2 has the second coating portion 1b and the outer conductor 1a at one end thereof peeled off to expose the central conductor 1c and the first coating portion 1d, and the contact of FIG. 21 center conductors
Connect the center contact 29 to 1c. The center contact 29 is connected to the insulator 31. The insulator 31 is inserted into the plug portion 27 and fixed. In this state, for example, using a crimping tool (not shown) having an upper die and a lower die, the crimping portion 23
The holding portion 25 fixes the coaxial cable 1. Crimp part
The lower mold is located under 23 and the holding unit 25, and the upper mold is crimped.
23 and the holding portion 25. Next, when the crimping tool is moved toward the crimping section 23 and the holding section 25, a pair of pressing pieces are pressed.
39 is deformed while being rolled inward, and the tip is pressed against the outer peripheral surface of the second covering portion 1b. In this way, the pressing piece 39
Penetrates the second coating portion 1b and comes into contact with the outer conductor 1a. The pressing piece 39 is continuously pressed until it has a curved shape, and the pressing is completed. At this time, the curved portion of the pressing piece 39 has a strong repulsive force and always holds down the coaxial cable 1 to maintain electrical stability. The pressing piece 39 is the coaxial cable 1
When holding the cable, the crimping piece 37 has an edge 37a capable of crimping the coaxial cable 1 at two points evenly and in good balance, thereby ensuring a stable contact. At the same time, the coaxial cable 1 is pressed against the crimping piece 37 from above, and the second coating portion 1b is breached by the edge 37a formed at the upper end of the crimping piece 37, and the crimping piece 37 contacts the outer conductor 1a. At the same time, holding piece 43
The outer circumference of the coaxial cable 1 by crimping and deforming it into a second
The covering portion 1b is held.

In this way, the coaxial cable is securely fixed to the coaxial connector contact, the center conductor 29 is electrically connected to the center conductor 1c, and the contact 21 is electrically connected to the outer conductor 1a.

[Effects of the Invention] As described in the above embodiments, according to the contact of the coaxial connector of the present invention, the plug portion, the crimping portion and the holding portion can be simultaneously and collectively connected to the coaxial cable, which facilitates the connection work. It can be carried out.

Further, since the contact may be directly connected to the coaxial cable, the number of parts can be reduced and the coaxial connector can be manufactured at a low price.

[Brief description of drawings]

FIG. 1 is a perspective view of a contact for a coaxial connector according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a coaxial cable connected to the contact of FIG. 1, and FIG. 3 is III-I of FIG.
II sectional view, FIG. 4 is a sectional view of a conventional coaxial connector, FIG.
FIG. 6 is a side view showing a state where a coaxial cable is connected to the coaxial connector of FIG. 4, and FIG. 6 is an exploded view of the coaxial connector of FIG. 1; coaxial cable, 1a; outer conductor, 1b; second covering portion, 1c;
Center conductor, 1d; first coating, 3; clamp, 9; body, 1
1; Nut, 13; Center contact, 21; Contact, 23; Crimping part, 25; Holding part, 27; Plug part, 29; Center contact, 3
1; insulator, 37; crimping piece, 39; pressing piece, 43; holding piece.

Claims (1)

[Scope of utility model registration request] 1. An electrically insulating first covering portion interposed between a central conductor and an outer conductor, and a second covering portion covering the outer conductor.
A conductive contact included in a coaxial connector that is electrically connected to a coaxial cable having a cover portion, and a second cover portion connected to the crimp portion for crimping the outer conductor. And a plug part extending from the crimping part for fixing the conductive center contact connected to the center conductor via an insulator, the crimping part being the first part. The crimping piece that breaks through the second covering portion and comes into contact with the outer conductor, and the second crimping piece that faces the crimping piece and breaks through the second covering portion and presses the outer conductor toward the crimping piece with a repulsive force. A contact for a coaxial connector, which has a pressing piece that comes into contact with an outer conductor.