JP3141018U - Connector for small coaxial cable - Google Patents

Abstract

A connector for a small coaxial cable is provided.
A metal case includes an insulating base and a contact terminal. The metal case has a case in which a slot and a limiting arm are provided, and the case is provided with a foldable clamping portion that is integrally extended. A plurality of clamping plates are respectively installed on both sides of the clamping part. The insulating base has a groove body installed in the slot, and the groove body is provided with a fixing bar, a joint port, and an electric wire base, the electric wire base is located on the inner periphery of the pair of limiting arms, The length of the limit arm is equal. A pair of contact plates and a pair of arc-shaped rivet plates crossing back and forth are installed at the bottom and top of the contact terminals, respectively, and fastened to the core wire of the coaxial cable. The holding plate of the metal case is bent, and is held and fixed to the outside of the case, the limiting arm of the case, the outside of the coaxial cable, and the like by a plurality of installed holding plates. Among them, the clamping plate for fixing the outer periphery of the limiting arm is a five-sided clamping plate having an opening shape.
[Selection] Figure 3

Description

The present invention relates to the structure of a connector for a small coaxial cable, and in particular, is a connector for a small coaxial cable in which the entire assembly is closely joined and the signal is hardly distorted.

FIG. 1 and FIG. 2 show an assembly process of a conventional general small coaxial cable and a sectional view after the assembly is completed. The conventional connector for a small coaxial cable includes an insulating base 1 and a metal case 2.

A cylindrical groove 11 is provided in the vertical direction of the insulating table 1. The front end portion of the outer edge of the groove body 11 is extended and a fixing bar is installed, and a joint port 13 penetrating vertically is formed on the inner periphery of the groove body 11, and one side of the groove body 11 is extended sideways. Thus, the electric wire base 14 is formed.

Contact terminals 15 are provided in the groove 11. A contact plate 151 is provided at the bottom of the contact terminal 15 so as to penetrate through the joint 13 of the groove 11, and a bent fixing bar 152 is formed on the top of the contact terminal 15.

The metal case 2 has a cylindrical case 21 in the vertical direction, and a slot 211 penetrating vertically is formed on the inner periphery of the case 21, and one side of the case 21 extends sideways and protrudes in a pair. An arm 212 is formed. The end portion of the outer edge of the case 21 extends to be provided with a holding portion 22, and the holding portion 22 and the case 21 are integrally molded. A bent portion 23 is formed between the holding portion 22 and the case 21, and the holding portion 22 can be bent with the bent portion 23 as a turning point. A pair of first clamping plate 221, second clamping plate 222, and third clamping plate 223 are installed on both sides of clamping unit 22, respectively.

The coaxial cable 3 includes a core wire 31, an insulating layer 32, a braided conductor 33 and an insulating coat 34 in order from the inner layer to the outer layer.

When assembling the whole, first, the insulating base 1 and the contact terminal 15 are installed in the slot 211 of the metal case 2, and at the same time, the electric wire base 14 of the insulating base 1 is placed between the pair of limiting arms 212 in the metal case 2. Subsequently, the coaxial cable 2 is installed on the top of the insulating base 1, and the core wire 31 of the coaxial cable 2 can be drilled in the contact terminal 15, and then the holding part 22 that was originally vertical using a jig is bent in the horizontal direction. The core cable 31 of the coaxial cable 3 is pressed by the coaxial cable 3 and the core wire 31 is fixed by the holding portion 22, the fixing bar 12 and the fixing bar 152 of the contact terminal 15, and the core wire 31 and the contact terminal 15 can be clamped. Finally, the first sandwiching plate 221, the second sandwiching plate 222, and the third sandwiching plate 223 on both sides of the sandwiching portion 22 are respectively connected to the limiting arm 212 of the case 21, the braided conductor 33 of the coaxial cable 3, and the insulating base coat 34 of the coaxial cable 3. The structure of the connector for the conventional small coaxial cable is completed by being pinched and fixed on top.

However, in the conventional general coaxial cable connector, since the electric wire base 14 of the insulating base 1 is shorter than the limiting arm 212 of the metal case 2, the clamping portion 22 is clamped and fixed to the limiting arm 212 by the first clamping plate 221. When this is done, an air gap is generated instead of a state where the inner circumference of the limit arm is clogged, and when transmitting a high-frequency signal, signal distortion is likely to occur due to the air gap. Furthermore, since the connector for the conventional small coaxial cable simply holds the core wire 31 of the coaxial cable 3 by the method of holding the upper and lower sides by the fixing bar 152, the holding force is not sufficient, and contact failure is likely to occur. Affects signal transmission quality.

In view of the shortcomings of the conventional connector for small coaxial cables, the inventor expects to provide the coaxial cable connector structure of the present invention and eliminate the disadvantages of the prior art.

The main purpose of the present invention is to provide a connector structure for a small coaxial cable, the entire assembly is closely joined, and during signal transmission, signal distortion is less likely to occur and signal transmission quality is ensured. It is.

According to the above object, the small coaxial cable connector of the present invention includes a metal case, an insulating base and a contact terminal. The metal case has a cylindrical case, and includes a slot and a pair of restricting arms on the inner periphery and one side of the case, respectively, and a foldable sandwiching portion that is integrally extended is provided at the distal end portion of the case. A plurality of clamping plates are installed on both sides of the clamping part. The insulating base has a groove body installed in the slot of the metal case, a fixing bar is extended to the top of the outer edge of the groove body, and a joint port and a wire base are respectively provided on the inner periphery and one side of the groove body. The pair of restriction arms is located on the inner periphery of the pair of restriction arms, and the length of the pair of restriction arms is equal to each other. A pair of arc-shaped rivet plates crossing back and forth are installed on both sides of the top portion of the contact terminal, and the pair of rivet plates are fixed to the core wire of the coaxial cable. The holding plate of the metal case is bent, and is held and fixed to the outside of the case, the limiting arm of the case, the outside of the coaxial cable, and the like by a plurality of installed holding plates. In this way, the length is equal between the wire base and the limit arm, and the wire base can fill the inner circumference of the limit arm, so that when the holding plate of the metal case clamps and fixes the outer circumference of the limit arm, it is flat. Since joining without a gap is obtained, the structure is stable and signal distortion is less likely to occur.

In addition, one of the clamping plates of the metal case is a five-sided clamping plate having an opening shape, and the bending points set in advance at each corner correspond to the respective bending angles of the limit arm of the metal case, so that there is a gap. In this state, the restricting arm and the electric wire base on the inner periphery thereof are clamped to improve the adhesion.

According to the present invention, by providing a connector structure for a small coaxial cable, the entire assembly is intimately joined, signal distortion is less likely to occur during signal transmission, and signal transmission quality is ensured. .

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

As shown in FIGS. 3 to 6, the small coaxial cable connector of the present invention includes a contact terminal 5, an insulating base 6, and a metal case 7.

A pair of contact plates 51 are provided on the bottom of the contact terminal 5 downward, and a pair of arc-shaped rivet plates 52 are provided on both sides of the top so as to cross forward and backward. The pair of front and rear arc-shaped rivet plates 52 can be clamped and fixed to the core wire 31 of the coaxial cable 3 both front and rear, so that the core wire 31 will not be damaged because it has a firm tightening and fixing action. .

A cylindrical groove 61 is provided in the vertical direction of the insulating table 6. A fixing bar 62 is extended at the top of the outer edge of the groove 61, a joint port 63 penetrating vertically is formed on the inner periphery of the groove 61, and a wire base 64 is extended sideways on one side of the groove 61. The core wire 31 and the insulating layer 32 of the coaxial cable 3 are straddled. The electric wire stand 64 is restricted by the following metal case 7.

The metal case 7 has a cylindrical case 71 in the vertical direction, a slot 711 penetrating vertically is formed on the inner periphery of the case 71, and a pair of protrusions projecting sideways on one side of the case 71 An arm 712 is extended. There is an appropriate gap between the limiting arms 712, which is used to limit the wire base 64 of the insulating base 6 to be located on the inner circumference of the limiting arm 712, and in the design of the present invention, The base 64 and the limiting arm 712 have the same length structure. An extended clamping portion 72 is provided at the outer edge of the case 71, and the clamping portion 72 and the case 71 are integrally molded. A bent portion 73 is formed between the holding portion 72 and the case 71, and the holding portion 72 has a function of bending the bent portion 73 as a turning point and fixing the coaxial cable 3. A first sandwiching plate 721, a second sandwiching plate 722, a third sandwiching plate 723, and a fourth sandwiching plate 724 are provided on both sides of the sandwiching portion 72, respectively.

As shown in FIGS. 7 and 8, arc rivet plates 52 intersecting before and after the contact terminals 5 are folded inside to be pinched and fixed to the core wire 31 of the coaxial cable (FIG. 4). Subsequently, the contact terminal 5 is installed in the joint 63 of the groove 61 of the insulating base 6 by the contact plate 51 and the insulating base 6 is installed in the slot 711 of the metal case 7 together with the contact terminal 5 (FIG. 5). And shown in FIG. After that, the clamping part 72 that was originally vertical using the jig is bent in the horizontal direction to perform packing pressing on the coaxial cable 3, and the first clamping plate 721, the second clamping plate 722 on both sides of the clamping part 72, and By being clamped and fixed to the outside of the case 71, the limiting arm 712 of the case 71, the braided conductor 33 of the coaxial cable 3, and the insulating base coat 34 of the coaxial cable 3 by the third clamping plate 723 and the fourth clamping plate 724, respectively ( 6 and 8), the assembly and structure of the connector for the small coaxial cable in the present invention is completed.

The connector according to the present invention has a general connector connecting action after the assembly is completed. Since the fixing bar 62 of the insulating base 6 is located between the contact terminal 5 and the metal case 7, it has an insulating action. Since the clamping part 72 of the metal case 7 and the braided conductor 33 of the coaxial cable 3 are clamped and fixed to each other, it has a grounding action. The core wire 31 of the coaxial cable 3 can be electrically connected to other substances through the contact terminal 5 and through the joint port 63.

However, according to the connector design of the present invention, the electric wire base 64 of the insulating base 6 and the limit arm 712 of the metal case 7 have the same length structure, and the electric power base 64 fills the inner peripheral space of the limit arm 712. Therefore, when the second clamping plate 722 of the metal case 7 clamps and fixes the outer periphery of the limiting arm 712, a flat and gap-free joint is obtained on the inner periphery of the limiting arm 712. Signal distortion is less likely to occur. In the connector structure of the present invention, the arc-shaped rivet plate 52 intersecting the front and rear of the contact terminal is clamped and fixed to the core wire 31 of the coaxial cable 3 respectively. A clamping force for clamping and fixing occurs, and the fixing force increases. Moreover, the arc-shaped rivet plates 52 intersecting in the front-rear direction can prevent the rivet plate from being broken or the core wire 31 from being damaged by the corresponding rivet plate being too long or too short.

When implemented, the second sandwiching plate 722 is a five-sided sandwiching plate having an opening shape, and the bending points set in advance at the respective corners (four corners) and the respective bending angles of the limiting arm 712 of the metal case 7 are determined. Since it corresponds, according to the shape of the said 5th surface clamping board, the 2nd clamping board 722 clamps the restriction arm 712 and the electric wire stand 64 of the inner periphery in the state without a clearance gap, and adhesiveness improves.

FIG. 1 is a sectional view showing a conventional connector for a small coaxial cable. 2 is a cross-sectional view of the connector of FIG. 1 after assembly is complete. FIG. 3 is an exploded perspective view showing a connector for a small coaxial cable of the present invention. 4 is a schematic diagram showing an assembly process of the connector of FIG. FIG. 5 is a schematic diagram showing the assembly process of the connector of FIG. 6 is a cross-sectional view of the connector of FIG. 3 after assembly is complete. 7 is a sectional view showing the connector of FIG. 8 is a sectional view showing the connector of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Insulation base 11 Groove body 12 Fixing bar 13 Joint port 14 Electric wire stand 5 Contact terminal 151 Contact board 152 Fixing bar 2 Metal case 21 Case 211 Slot 212 Restriction arm 22 Clamping part 221 1st clamping board 222 2nd clamping board 223 3rd Clamping plate 3 Coaxial cable 31 Core wire 32 Insulating layer 33 Braided conductor 34 Insulating coat 5 Contact terminal 51 Contact plate 52 Arc-shaped rivet plate 6 Insulating base 61 Groove 62 Fixing bar 63 Joint port 64 Electric wire base 7 Metal case 71 Case 711 Slot 712 Restriction Arm 72 Clamping portion 721 First clamping plate 722 Second clamping plate 723 Third clamping plate 724 Fourth clamping plate 73 Bending portion

Claims (2)

A connector for a small coaxial cable comprising a core wire, an insulating layer, a braided conductor and an insulating coat in order from the inner layer to the outer layer,
The connector is a metal case having a cylindrical case in the vertical direction and having a slot and a pair of restricting arms on the inner periphery and one side of the case, respectively, and the outer edge of the case has a distal end via a bent portion. A sandwiching portion is integrally extended, and the sandwiching portion is bent with the bent portion as a turning point, and a first sandwiching plate, a second sandwiching plate, a third sandwiching plate, and a fourth sandwiching plate are respectively provided on both sides of the sandwiching portion. And what to install
An insulating base having a groove in the vertical direction, the groove being installed in a slot of the metal case, and a fixing bar extending from the top of the outer edge of the groove, A joint port and an electric wire base are provided on the inner periphery and one side, respectively, and the electric wire base is located on the inner periphery of the pair of restricting arms, extends over the coaxial cable, and is equal in length to the pair of restricting arms. What is the structure,
A pair of contact plates are installed at the bottom, and the pair of contact plates are contact terminals installed at the joint of the insulating base, and a pair of arc-shaped rivet plates crossing back and forth are installed on both sides of the top of the contact terminal. The pair of rivet plates fixed to the core of the coaxial cable;
The holding plate of the metal case is bent, and the first holding plate, the second holding plate, the third holding plate, and the fourth holding plate respectively, the case outside, the case limiting arm, the braided conductor of the coaxial cable, and the A connector for a small coaxial cable, characterized in that the insulation coat of the coaxial cable is sandwiched and fixed. A five-side sandwich plate in which the second sandwich plate of the metal case has an opening shape, wherein bending points provided in advance at each corner correspond to respective folding angles of the limit arm of the metal case. The connector for small coaxial cables according to claim 1.