JP2003331997A - Mini-coaxial connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a return by a bending process and a deformation by a pulling-off action in an insertion-coupling tubular body about a mini-coaxial connector used in an electronic equipment, for example, a personal computer, a cellular phone, a PDA or the like. <P>SOLUTION: With the mini-coaxial connector 1 for conducting a male type contact of a coaxial connector receptacle and an outer-shell body through a contact and an insertion-coupling tubular body core wires and braided wires of a coaxial cable provided in a metal shell, a spring back preventing means to prevent a return by bending and forming of the insertion-coupling tubular body is provided with the insertion-coupling tubular body 2f engaging to insertion-coupled with the outer-shell body. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mini-coaxial connector used in electronic equipment such as personal computers, mobile phones and PDAs.

[0002]

2. Description of the Related Art Conventionally, as a mini-coaxial connector 20 used in a small electronic device such as a mobile phone, as a conventional example, as shown in FIG. 11, a miniature coaxial connector 20 is fitted to a coaxial connector receptacle 22 on a printed circuit board 21. At the same time, in order to make the height H from the board surface as low as possible, the core wire 23a of the coaxial cable 23 is arranged in a direction orthogonal to the male contact of the coaxial connector receptacle 22 so as to be L-shaped. What is done is known.

In the core wire 23a of the coaxial cable, the pressure contact 25 provided on the insulator 24 of the mini-coaxial connector 20 breaks the inner insulator 23b of the coaxial cable 23 with its sharp blade and abuts the core wire 23a. Electrical continuity is achieved. The pressure contact 25 is fitted to the male contact 22a of the coaxial connector receptacle 22 to electrically connect the core wire 23a and the male contact 22a.

On the other hand, the outer contact 26 of the mini-coaxial connector 20 is also used as a cover member for covering the pressed coaxial cable 23, and also the fixed band 26.
The outer sheath 23c of the coaxial cable 23 is caulked and fixed by a.
The crimping piece 26b breaks the outer cover 23c to establish electrical continuity with the outer conductor (shield braided wire).

As a conventional example, as shown in FIG. 12, this is an L-shaped mini-coaxial connector in which a coaxial cable 23 is arranged substantially parallel to the printed circuit board 21, and the female contact 27 is L-shaped. The connection portion with the coaxial cable 23 is provided at a position separated from the fitting position with the coaxial connector receptacle 22.

[0006]

However, in the above-mentioned conventional example, the outer shell of the coaxial cable is pierced, but since the mini coaxial connector is downsized and thinned, the cutting blade becomes thin and the pressure welding work is difficult. Has become. Further, it is difficult to package the mini-coaxial connector delivered to the customer as an intermediate assembly before the coaxial cable is pressed. Also, if the coaxial cable is pressed, it becomes difficult for the customer to assemble it. In the conventional example, when removing the mini-coaxial connector from the coaxial connector receptacle, the coaxial cable may be pulled out without using a jig, and in that case, the female contact is long, so there is a problem that it is easily deformed by the removal force. is there. The mini coaxial connector according to the present invention has been proposed in order to solve such a problem.

[0007]

The gist of the mini-coaxial connector according to the present invention for solving the above-mentioned problems is to provide a contact and a fitting cylinder in which a core wire and a braided wire of a coaxial cable are provided in a metal shell. Via the male connector and outer shell of the coaxial connector receptacle via
The fitting tubular body fitted to the outer shell body is provided with a springback preventing means for preventing a return due to the bending of the fitting tubular body.

Further, the gist of the mini-coaxial connector of the present invention is to provide a male contact of a coaxial connector receptacle through a contact provided on a metal shell for a core wire and a braided wire of a coaxial cable and a fitting cylinder. Each of them is electrically connected to the outer shell body, and in the fitting cylinder body fitted to the outer shell body,
A caulking portion for caulking the inner insulator of the coaxial cable,
That is, a reinforcing member is extended to a crimping portion for crimping the braided wire of the coaxial cable.

The gist of the mini coaxial connector according to the present invention is as follows.
The core wire and the braided wire of the coaxial cable are electrically connected to the male contact and the outer shell of the coaxial connector receptacle through the female contact provided on the metal shell and the fitting cylindrical body. Is provided with a press-contact terminal for press-contacting the core wire, and an opening portion of the press-contact terminal is opened toward the male contact side.

According to the mini-coaxial connector of the present invention,
Since the flat body portion of the shell is provided with the springback preventing means in the fitting cylinder body that is bent substantially orthogonally, even if the fitting cylinder body tries to return before being bent, This is prevented by the locking action of the prevention means, and the bent state of the fitting cylinder is maintained.

Further, the reinforcing member prevents the deformation of the shell by increasing the resistance against the deformation force of the shell when the mini coaxial connector is pulled out from the coaxial connector receptacle.

Further, in the female contact of the shell, since the pressure contact terminal for pressure contacting the core wire of the coaxial cable is opened toward the male contact side of the coaxial connector receptacle, the contact height can be lowered. , The overall height of the mini coaxial connector will be reduced.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a mini coaxial connector 1 according to the present invention will be described with reference to the drawings. In addition, in order to facilitate understanding of the present invention, portions corresponding to the conventional example are described with the same reference numerals as in the conventional example.

The mini-coaxial connector 1 of the present invention is shown in FIG.
As shown in (A) and (B), the coaxial cable 3 is crimped to the metal shell 2. This shell 2
As shown in FIG. 2, there are a portion for crimping and holding the coaxial cable 3 and a portion for fitting with a coaxial connector receptacle (not shown) fixed on the printed circuit board.

In the portion for crimping and holding the coaxial cable 3, a plurality of crimping portions which are cut and raised so as to be orthogonal to each other from both sides of the base 2a of the shell are arranged.
There is a caulking part, which is the outer cover 3a of the coaxial cable 3.
An outer cover crimping member 2b for crimping, a braid crimping member 2c for crimping the braided wire 3b of the coaxial cable 3, and a caulking member 2d for crimping the inner insulator 3c of the coaxial cable 3.

The braid pressure-bonding member 2c and the caulking member 2d are respectively provided with semi-circular projections 2e projecting as locking portions inside thereof.

As shown in FIG. 2, a fitting cylindrical body 2f having a cylindrical shape and having slits provided at two positions at its tip end is provided at a portion of the coaxial connector receptacle fitted with the outer shell. . 2B and FIG.
As shown in (A), a pair of extended reinforcing portions 2g protruding linearly from the cylindrical portion in the tangential direction are provided, and the extended reinforcing portions 2g have locking recesses 2h, 2i, 2j. Each is provided. The extended reinforcing portion 2g has a length up to the portion of the braid crimping member 2c when the fitting cylinder 2f is bent, and serves as a reinforcing member that is caulked by a double member.

Immediately after punching from the thin metal plate, the fitting cylindrical portion 2f is formed substantially orthogonal to the surface of the base 2a, as shown in FIG. 2 (B). And
As shown in FIG. 2, the fitting tubular body 2f is bent at approximately 90 degrees in the direction of the arrow in the figure at the narrow width portion of the neck portion 2k that connects the base 2a and the fitting tubular body 2f.

When the fitting cylinder 2f is bent, the elastic force of the member itself causes a force to return to the original state. Therefore, in order to prevent the springback, it is cut and raised from the base 2a at a substantially right angle. Protrusions 2n for locking are provided on the pair of locking members 2m.

The projection 2n engages with the recess 2j when the fitting cylinder 2f is bent. At the same time, the protrusion 2e of the caulked portion 2d engages with the recess 2h, and the protrusion 2e of the braid crimp member 2c engages with the recess 2i.

Due to these fitting and locking actions, spring back of the fitting cylinder 2f is prevented.
Therefore, the recesses 2h, 2i, 2j and the protrusions 2e, 2n are
And serve as springback prevention means. The two recesses 2j are also used for fixing the insulator 5 press-fitted into the fitting cylinder 2f, as described later.

The shell 2 formed as described above is connected to the carrier portion (or after cutting),
The insulator and the contact (female contact) are press-fitted into the fitting cylinder 2f to be assembled. That is, as shown in FIG. 4A, the female contact 4 (see FIG. 9) is connected to the insulator 5 (see FIG. 10).
(Refer to FIG. 2) and press-fit it into the fitting cylinder 2f.

The outer peripheral surface of the fitting cylindrical body 2f is press-fitted to a position where the insulator 5 abuts on the restriction projection 2p protruding toward the inner wall side. As shown in FIG. 5, due to the presence of the recess 2j in the fitting cylindrical body 2f, the portion of the recess 2j protruding toward the inner peripheral wall surface engages with the locking projection 5a of the insulator 5. , The insulator 5 is fixed.

In the female contact 4, the pressure contact direction of the pressure contact terminals 4a, 4b for pressure contacting the core wire of the coaxial cable 3 is the same as the contact direction of the contact pieces 4c, 4d for fitting the male contact of the coaxial connector receptacle. , And the same direction.

As a result, the base portion 4 of the female contact 4 is
The height from e can be reduced. In the case of the conventional example, if the pressure contact terminal and the contact piece are provided on the opposite side of the base portion 4e, the height of the female contact as a whole becomes high. The height can be lowered. Press fit engagement piece 4
Reference numeral f is an engagement piece that engages so as not to come out when it is pressed into the insulator 5.

Next, from the state where the insulator 5 and the female contact 4 are attached to the fitting cylinder 2f (the state shown in FIG. 4A), the fitting cylinder 2f is bent in a substantially orthogonal direction. (The state shown in FIG. 4B).

At this time, the spring back means acts so that the projections 2e, 2n are locked in the recesses 2h, 2i, 2j. Thus, as shown in FIG. 6, the carrier portion 7
The mini-coaxial connector 1 in which the female connector 4 and the insulator 5 are assembled is formed on the, and the mini-coaxial connector 1 is wound on a reel and delivered as a product. When the shell 2 is previously cut from the carrier part 7 and the female contact 4 and the insulator 5 are press-fitted into the shell 2, the shell 2 is delivered as a product in the state shown in FIG. 4 (B). .

To attach the coaxial cable 3 to the mini coaxial connector 1, pull out the required length from the reel and cut the mini coaxial connector 1 from the carrier portion 7 as shown in FIG. As shown in FIG. 7, the coaxial cable 3 is mounted from the same direction as the direction in which the coaxial connector receptacle is fitted, and as shown in FIG. 8, the pressure welding work and the caulking work are performed in one step with a jig or the like.

[0029]

As described above, in the mini coaxial connector according to the present invention, the coaxial connector receptacle is provided with the core wire and the braided wire of the coaxial cable through the contact and the fitting cylinder provided on the metal shell. And a springback prevention for preventing return due to the fitting cylinder being bent and formed in the fitting cylinder fitted into the outer shell. Since the means is provided, it has an excellent effect that the fitting cylinder is stably fixed even after being bent.

Further, the core wire and the braided wire of the coaxial cable are electrically connected to the male contact of the coaxial connector receptacle and the outer shell through the contact provided on the metal shell and the fitting cylinder. A reinforcing member extending from the crimping portion for crimping the internal insulator of the coaxial cable and the crimping portion for crimping the braided wire of the coaxial cable to the fitting cylinder body fitted to the outer shell body. Therefore, as shown in FIG. 8, it has an excellent effect that it is double crimped and firmly crimped, and the deformation when it is removed from the coaxial connector receptacle is reduced.

Further, since the female contact is provided with a pressure contact terminal for pressure contacting the core wire, and the opening of the pressure contact terminal is opened toward the male contact side, the back of the entire mini-coaxial connector is formed. This has an excellent effect that the height of the device can be reduced, which contributes to high-density mounting in a thin and small mobile phone or the like.

[Brief description of drawings]

FIG. 1 is a front view (A) of a mini coaxial connector 1 according to the present invention, and an explanatory view (B) showing how a coaxial cable 3 is crimped to the mini coaxial connector 1.

FIG. 2 is a plan view (A) of the shell 2 of the mini coaxial connector 1 according to the present invention, and a sectional view (B) taken along the line AA.
Is.

3A is a cross-sectional view taken along the line BB in FIG. 2B, and FIG. 3B is a cross-sectional view taken along the line CC.

FIG. 4 is a sectional view (A) showing a state in which a female contact 4 and an insulator 5 are press-fitted into the mini-coaxial connector 1 according to the present invention (A), and a sectional view (B) showing a state in which a fitting cylinder 2f is bent. .

5 is a sectional view (B) taken along the line DD in FIG. 4 (A).

FIG. 6 is a plan view showing a state where a mini coaxial connector 1 of the present invention is formed on a carrier portion 7.

FIG. 7 is a cross-sectional view of a state in which the coaxial cable 3 is crimped onto the mini coaxial connector 1 according to the present invention.

FIG. 8 shows a mini coaxial connector 1 according to the present invention,
Explanatory drawing (A) showing how the coaxial cable 3 is crimped,
(B) and (C).

FIG. 9 is a front view (A), side views (B), (C) of the female contact 4 in the mini-coaxial connector 1 according to the present invention.
It is a top view (D) and a bottom view (E).

FIG. 10 is a front view (A), side views (B), (C), and bottom view (D) of an insulator 5 in the mini-coaxial connector 1 according to the present invention.

FIG. 11 is an explanatory view (A), a plan view (B) and a front view (C) of assembling a coaxial cable 23 of a mini coaxial connector according to a conventional example.

FIG. 12 is an explanatory view (A) and a perspective view (B) of a usage state of a mini coaxial connector according to a conventional example.

[Explanation of symbols]

1 mini coaxial connector, 2
Shell, 2a base, 2b
Outer cover crimping member, 2c braided crimping member,
2d Caulking member, 2e
Protrusion, 2f fitting cylinder, 2g extended reinforcement, 2h, 2
i, 2j recess, 2k neck,
2m locking member, 2n protrusion,
2p regulation protrusion 3
Coaxial cable, 3a skin,
3b braided wire, 4
Female contact, 4a, 4b pressure contact terminal,
4c, 4d contact pieces, 4e base,
4f Press-fitting engagement piece, 5
Insulator, 5a Locking protrusion.

Claims (3)

[Claims] 1. A method for electrically connecting a core wire and a braided wire of a coaxial cable to a male contact and an outer shell of a coaxial connector receptacle through a contact provided on a metal shell and a fitting cylinder. A mini-coaxial connector characterized in that the fitting tubular body fitted to the outer shell body is provided with springback preventing means for preventing return due to bending of the fitting tubular body. . 2. A core wire and a braided wire of a coaxial cable are electrically connected to a male contact and an outer shell of a coaxial connector receptacle through a contact provided on a metal shell and a fitting cylinder. A reinforcing member extending from the crimping portion for crimping the inner insulator of the coaxial cable and the crimping portion for crimping the braided wire of the coaxial cable to the fitting cylindrical body fitted to the outer shell. It has a mini coaxial connector. 3. A core wire and a braided wire of a coaxial cable are inserted through a female contact provided on a metal shell and a fitting cylinder.
The male contact and the outer shell of the coaxial connector receptacle are electrically connected to each other, and the female contact is provided with a press contact terminal for press contacting the core wire, and the opening of the press contact terminal is on the male contact side. A mini-coaxial connector characterized by being opened toward.