JP3418513B2 - Connecting terminal - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection terminal that fixes an end portion of an inner conductor of an electric wire and can be fitted and connected to a conductive member. In particular, the inner conductor portion is composed of a single core wire. The present invention relates to a connection terminal having an improved structure for fixing a terminal portion of a coaxial cord.

[0002]

2. Description of the Related Art Conventionally, lead wires and internal wiring of high-frequency equipment and electronic computers, antenna feeding systems, UHF and VH such as CATV and ITV
In coaxial cables that have been used for transmission of F and video frequencies, the inner conductor core wire consisting of annealed copper single core wire or twisted annealed copper wire is about 1/10 to 2/10 (about 0.
Since it is set to a thickness of about 4 mm to 3 mm, the method of fixing to the connection terminal that can be fitted and connected to the conductive member depends on the binding and gripping method using the crimping piece that is used for normal connection terminals. As shown in FIG. 7, the inner portion exposed by removing, for example, the sheath 5, the outer conductor 4 and the insulator 3 on the upper surface in the vicinity of the rear end portion of the connecting portion 11 of the connecting terminal 10 to avoid the electric wire breakage and the dropout failure. It was a general method to fix the conductor 2 by soldering 6 or ultrasonic welding. The conventional connection terminal 10 configured as described above forms a part of a conductive member,
For example, the connecting pin 14 of the antenna feeding system circuit 13 is formed by bending the front end side wall of the connecting terminal 10 into a fitting spring portion 12
It was fitted inside to obtain conduction.

[0003]

However, in the above-mentioned conventional connecting terminal 10, since the inner conductor 2 is relatively thin, it takes time and skill for soldering or ultrasonic welding processing, and the workability is improved. I couldn't hope.

The present invention solves the above-mentioned problems of the prior art, and securely and easily fixes the inner conductor without damaging the inner conductor, and the connection terminal can be automatically fixed by a crimping machine. It is intended to provide.

An object of the present invention is to provide a substantially flat and elongated connecting portion, a fitting spring portion formed by bending along both front end portions of the connecting portion, and both central end portions of the connecting portion 21. A cylindrical portion formed by bending along the above, an insulator crimping portion formed by bending along both rear end portions of the connecting portion, and insertable into the inside through an upper opening of the cylindrical portion. A connecting terminal comprising a plug portion, wherein the plug portion has a gap in which the inner conductor core wire of an electric wire extending vertically above the tubular portion can be pushed into the tubular portion and fixed therein. And at least the inner peripheral surfaces of the front wall piece and the rear wall piece.

Further, the above object of the present invention is achieved by a connection terminal characterized in that the tubular portion is composed of one side wall piece and the other side wall piece having a front wall piece and a rear wall piece.

Further, the object of the present invention is that the cylindrical portion is provided with a protrusion so as to cross the bottom surface thereof.
This is achieved by a connection terminal characterized in that the plug portion has a groove portion corresponding to the projection portion and is recessed in the bottom surface thereof.

Further, the object of the present invention is characterized in that the tubular portion is formed by engraving notches capable of capturing the inner conductor core wire on the front wall piece and the rear wall piece. Achieved by connecting terminals.

Still another object of the present invention is that the tubular portion is provided with a notch portion capable of capturing the inner conductor core wire on the front wall piece, and the inner conductor core wire is bent on the rear wall piece. This is achieved by a connecting terminal characterized in that it comprises a slit that does not induce deformation.

Further, the above object of the present invention is achieved by a connecting terminal characterized in that the electric wire comprises a coaxial cord having an inner conductor.

Further, the above object of the present invention is achieved by a connection terminal characterized in that the inner conductor comprises a single core wire or a twisted core wire.

The connection terminal of the present invention includes a substantially flat and elongated connecting portion, a fitting spring portion formed by bending along both front end portions of the connecting portion, and both center end portions of the connecting portion. A tubular part formed by bending along it, an insulator crimping part formed by bending along both rear end portions of the connecting part, and a plug insertable into the inside from an upper opening part of the tubular part In the connection terminal, the plug portion has a gap in which the inner conductor core wire of an electric wire vertically extending above the tubular portion can be pushed into and fixed in the tubular portion. Of at least the inner peripheral surfaces of the front wall piece and the rear wall piece, the inner conductor core wire is bent and deformed in the gap caused by the assembly of the tubular portion and the plug portion. Fixed.

Further, in the connection terminal of the present invention, since the cylindrical portion is composed of one side wall piece and the other side wall piece having the front wall piece and the rear wall piece, the construction is compact and the processing is easy.

Further, in the connection terminal of the present invention, the tubular portion is formed by projecting the projection so as to traverse the bottom surface thereof, and the plug portion has the groove corresponding to the projection. Since the bottom surface is recessed, the bending deformation of the inner conductor core wire is further increased, and the friction resistance of the retaining wire is further increased.

Further, in the connection terminal of the present invention, the tubular portion is formed by engraving the notch portions capable of capturing the inner conductor core wire on the front wall piece and the rear wall piece. Positioning for bending deformation and fixing of the conductor core wire can be performed easily and reliably.

Further, in the connection terminal of the present invention, the tubular portion is provided with the notch portion capable of capturing the inner conductor core wire in the front wall piece, and the rear wall piece of the inner conductor core wire is formed. Since the slit which does not induce the bending deformation is provided, the abnormal tension phenomenon due to the bending deformation of the inner conductor core wire is alleviated, and the occurrence of core breakage failure is suppressed.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the connection terminal of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a vertical cross-sectional view of a main part of the connection terminal 20 of the present invention, FIG. 2 is a plan view of the main part of the connection terminal 20 in a developed state, and FIG. 3 is a perspective view of the main part of the connection terminal 20. It is a thing. The connection terminal 20 of the present invention comprises a substantially flat and elongated connecting portion 21, a fitting spring portion 22 formed by bending along both front end portions of the connecting portion 21,
A tubular portion 23 formed by bending along both central ends of the connecting portion 21, an insulator crimping portion 24 formed by bending along both rear end portions of the connecting portion 21, and the tube. It is provided with a plug portion 25 which can be inserted into the inside from the upper opening portion of the shaped portion 23.

The tubular portion 23 comprises one side wall piece 26 along both sides of the connecting portion 21 and the other side wall piece 29 having a front wall piece 28 and a rear wall piece 29, and the plug portion 25. Is a wire that extends vertically above the tubular portion 23, for example, a single-core wire that is the inner conductor 2 of the coaxial cord 1 is pushed into the tubular portion 23, and the inner peripheral surface of the tubular portion 23 and the The stopper portion 25 is fixed by being bent and deformed in a gap defined by the outer peripheral surface of the plug portion 25, and the gap faces at least the inner peripheral surfaces of the front wall piece 28 and the rear wall piece 29 of the tubular portion 23. It may be formed between the outer peripheral surfaces of the plug portion 25.

In order to further secure the fixation of the inner conductor 2 due to the bending deformation by the assembly of the tubular portion 23 and the plug portion 25, as shown in FIG. While the protruding portion 31 is provided so as to cross the bottom surface thereof, the plug portion 25 is formed by recessing the groove portion 30 corresponding to the protruding portion 31 at the bottom surface thereof.

In FIG. 5, in order to easily and surely position the inner conductor 2 for bending deformation and fixing, notches capable of catching the inner conductor 2 on the front wall piece 28 and the rear wall piece 29 are shown. The cylindrical portion 23 formed by engraving the portions 32 and 33 is shown.

FIG. 6 shows a cutout portion capable of catching the inner conductor core wire on the front wall piece 28 in order to alleviate an abnormal tension phenomenon caused by the bending deformation of the inner conductor 2 and suppress the occurrence of a core wire breakage failure. The cylindrical portion 23 is formed by engraving 32 and providing the rear wall piece 29 with a slit 34 that does not induce bending deformation of the inner conductor core wire.

The connection terminal of the present invention configured as described above
The wire 20 to be connected is not limited to the coaxial cord 1 of the inner conductor 2 formed of, for example, a single core wire or a twisted core wire exposed by removing the sheath 5, the outer conductor 4 and the insulator 3 as described above. Instead, it can be applied to an electric wire composed of a usual twisted core wire, an insulator, a sheath, and the like.

[0023]

The connection terminal 20 of the present invention has the following novel effects. That is, the connection terminal 20 of the present invention comprises a substantially flat and elongated connecting portion 21, the fitting spring portion 22 formed by bending along both front end portions of the connecting portion 21, and the connecting portion 21. Of the cylindrical portion 23 formed by bending along both central end portions, the insulator crimping portion 24 formed by bending along both rear end portions of the connecting portion 21, and the tubular portion. The plug part that can be inserted into the inside from the upper opening of 23
In the connection terminal 20 including 25, the tubular portion 23 includes the one side wall piece 26 and the other side wall piece 27 having the front wall piece 28 and the rear wall piece 29, and the plug portion. 25, at least the front wall of the tubular portion 23, the gap that can be fixed by pressing the inner conductor core wire of the electric wire extending vertically above the tubular portion 23 into the tubular portion 23. Since it is provided on the inner peripheral surfaces of the piece 28 and the rear wall piece 29, the cylindrical portion 23
Is compact and easy to process, and the inner conductor core wire can be securely and easily fixed by bending deformation in the gap caused by the assembly of the tubular portion 23 and the plug portion 25. became. Further, since the plug portion 25 is simply press-fitted into the inside from the upper opening portion of the tubular portion 23 , it can be automatically fixed by the crimping machine.

Furthermore, the connection terminal 20 of the present invention is the tubular portion.
23 is formed by projecting the protruding portion 31 so as to traverse the bottom surface thereof, and the plug portion 23 is formed by recessing the groove portion 30 corresponding to the protruding portion 31 in the bottom surface thereof. The bending deformation of the inner conductor 2 is increased, and it is possible to increase the friction resistance of the retainer.

Further, the connection terminal 20 of the present invention is the tubular portion.
23, the front wall piece 28 and the rear wall piece 29 are engraved with the respective cutout portions 32, 33 capable of capturing the inner conductor 2,
Positioning for bending deformation and fixing of the inner conductor 2 can be performed easily and reliably.

Further, the connection terminal 20 of the present invention is the tubular portion.
23 engraves the notch 32 capable of capturing the inner conductor 2 on the front wall piece 28, and forms the inner conductor 2 on the rear wall piece 29.
Since the slit 34 which does not induce the bending deformation is provided, it is possible to alleviate the abnormal tensile phenomenon caused by the bending deformation of the inner conductor 2 and suppress the occurrence of core wire breakage failure.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main part of a connection terminal of the present invention.

FIG. 2 is a development view of a main part of a connection terminal of the present invention.

FIG. 3 is a perspective view of a main part of the connection terminal of the present invention.

FIG. 4 is a vertical cross-sectional view of a main part of another connection terminal of the present invention.

FIG. 5 is a perspective view showing a main part of another connection terminal of the present invention.

FIG. 6 is a perspective view showing a main part of still another connection terminal of the present invention.

FIG. 7 is a perspective view showing a main part of a conventional connection terminal.

[Explanation of symbols]

1 coaxial cord 2 inner conductor 3 insulator 4 outer conductor 5 sheath 6 solder 10 Conventional connection terminal 11 Connection 12 Mating spring part 13 Antenna feeding circuit 14 Connection pin 20 Connection terminal of the present invention 21 Connection 22 Mating spring part 23 Cylindrical part 24 Insulator crimp part 25 Stopper 26 Side wall piece 27 Side wall piece 28 Front wall piece 29 Rear wall piece

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Shown 55-8127 (JP, U) Shown 63-37075 (JP, U) Shown 48-76482 (JP, U) Shown 54- 107889 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01R 17/04 H01R 4/18

Claims (7)

(57) [Claims] 1. A substantially flat and elongated connecting portion, a fitting spring portion formed in front of the connecting portion, and a tubular portion formed by bending along both central ends of the connecting portion 21. After the connection
Insulator crimping portion formed by bending process along the square two side portions,
And a connection terminal comprising a plug portion that can be inserted into the inside from an upper opening of the tubular portion, wherein the plug portion is an inner conductor core wire of an electric wire extending vertically above the tubular portion. A connection terminal, characterized in that it has a gap that can be pushed into and fixed in the tubular portion with respect to at least the inner peripheral surfaces of the front wall piece and the rear wall piece of the tubular portion. 2. The connection terminal according to claim 1, wherein the tubular portion includes one side wall piece and the other side wall piece having a front wall piece and a rear wall piece. 3. The cylindrical portion is formed by projecting a projection so as to traverse the bottom surface thereof, and the plug portion is formed by recessing a groove corresponding to the projection on the bottom surface thereof. The connection terminal according to claim 1, which is characterized in that. 4. The connection according to claim 1, wherein the tubular portion is formed by engraving notches capable of capturing the inner conductor core wire on the front wall piece and the rear wall piece. Terminal. 5. The cylindrical portion is provided with a notch capable of capturing the inner conductor core wire in the front wall piece, and a slit that does not induce bending deformation of the inner conductor core wire in the rear wall piece. The connection terminal according to claim 1, wherein 6. The connection terminal according to claim 1, wherein the electric wire is a coaxial cord having an inner conductor. 7. The connection terminal according to claim 6, wherein the inner conductor comprises a single core wire or a twisted core wire.