CN205583197U - A 90°IEC connector and a signal line using the 90°IEC connector - Google Patents

Abstract

The utility model proposes a 90°IEC connector and a signal line using the 90°IEC connector, which can not only improve the transmission performance of the signal at the connector, but also facilitate the arrangement of the signal line. The utility model is composed of a plug, a main body, a tail tube, a locking sleeve, a needle core, a first insulating rubber core, and a second insulating rubber core. The tail tube is vertically installed at the tail end of the main body, and the locking sleeve is installed on the tail tube; the first insulating rubber core is fixed in the plug or the main body, and the second insulating rubber core is fixed in the tail tube. The needle core is an L-shaped structure, and the head end of the needle core passes through the first insulating rubber core and is fixedly connected to the first insulating rubber core; the tail end of the needle core is fixed by the second insulating rubber core; the interior of the main body and the interior of the tail tube are hollow, and the tail end face of the first insulating rubber core, the head end face of the second insulating rubber core, the inner side wall of the main body and the inner side wall of the tail tube form a cavity with air as the insulating medium, and the middle part and the tail end of the needle core are exposed in the cavity.

Description

A sort of 90 ° IEC connectors and the use of the 90 ° IEC connector signal line

technical field

The utility model relates to a fully shielded 90° joint with high reflection performance and conforming to the IEC61169-2 specification and a signal line using the 90° IEC joint.

Background technique

As shown in Figures 1 and 2, the traditional IEC61169-2-compliant connector (referred to as the IEC connector) consists of three parts: the shell, the needle core and the insulating rubber core. When the joint is assembled with the coaxial cable, the core wire of the cable is welded or riveted with the needle core, the shielded wire is welded with the shell, and then the outer mold is formed by injection molding.

In theory, the impedance of the connector is formed by the impedance of each part of the connector. The specific calculation formula of the impedance is as follows: Z0=138.16*lg(D/d)/SQRT(ε), where Z0: impedance (unit: ohm); D: inner diameter of the outer conductor (unit: mm); d: outer diameter of the inner conductor (unit: mm); ε: dielectric constant of the material (note: among all insulating materials, air has the largest ε, which is 1.0). The traditional IEC connector uses PE as the insulating medium, and the ε=2.28 of the PE material; for the IEC male connector, D=8.4mm, d=2.35mm, calculated by the above impedance formula, the impedance is only about 50 ohms, which does not match the system. As a result, the reflection index of the finished coaxial cable is very poor, and the higher the transmission frequency, the worse the reflection; in addition, the open tail of the connector has almost no shielding for the signal. The above reasons lead to a very large loss of signal transmission.

At present, the signal system is developing in the direction of high frequency and high speed, and the traditional IEC connector cannot meet the requirements of the new system.

In addition, the sockets corresponding to the above-mentioned connectors are generally buried in the wall. When the connectors are inserted into the sockets, the signal lines at the end of the plugs are perpendicular to the wall, and because the signal lines are generally relatively hard coaxial cables, they cannot be placed close to the wall. wall, so it takes up a lot of space and is very unsightly.

Contents of the invention

The purpose of this utility model is to propose a 90°IEC joint conforming to the IEC61169-2 standard and a signal line using the 90°IEC joint which are easy to install, which can not only improve the signal transmission performance at the joint, but also facilitate the arrangement of the signal lines.

The 90°IEC joint of the utility model is composed of a plug, a main body, a tail pipe, a locking sleeve, a needle core, a first insulating rubber core, and a second insulating rubber core, and the plug, the main body, the needle core, and the tail pipe are all metal Made; the plug is installed on the head end of the main body, the tail pipe is installed on the tail end of the main body and is perpendicular to the axis of the main body, and the locking sleeve is installed on the tail pipe through screw fit; the first insulating glue The core is fixed in the plug or the main body, the second insulating rubber core is fixed in the tail pipe, the needle core is an L-shaped structure with a bent part, and the head end of the needle core passes through the first insulating rubber core and connects with the first The insulating rubber core is fixedly connected; the tail end of the needle core is fixed by the second insulating rubber core; the inside of the main body and the inside of the tail pipe are hollow, and the tail end face of the first insulating rubber core and the head of the second insulating rubber core The end face, the inner side wall of the main body and the inner side wall of the tail pipe form a cavity with air as the insulating medium, and the middle part and the tail end of the needle core are exposed in the cavity.

The above-mentioned 90°IEC connector adopts an L-shaped needle core, and makes the plug and the tailpipe vertical. When the plug is inserted into the socket buried in the wall, the tailpipe will be parallel to the wall, so that the signal lines will be parallel And close to the wall, reducing the occupied space, and more beautiful. More importantly, the above-mentioned cavity will increase the impedance of the connector, so that the impedance of the connector is about 75 ohms, which matches the system and improves the transmission performance of the signal at the connector. The specific principles are as follows:

The size of the plug is standard, that is, it meets the size requirements of IEC169-2. However, if the impedance calculation formula is used to calculate, the impedance of the plug part is only about 50 ohms. In this way, the impedance of the entire connector may not be the 75 ohms required by the system. ;

According to the impedance calculation formula, the dielectric constant of air is the largest, that is, 1.0. Generally, the dielectric constant of the insulating material used to fix the connector needle core is greater than 1.0. The utility model forms a cavity with air as the insulating medium inside the main body, increasing the The impedance of the main part (about 100 ohms), through the equalization effect with the impedance of the plug part (50 ohms), the overall connector reaches or is close to 75 ohms.

Further, the tail end of the needle core is fixedly connected to the second insulating rubber core through an elastic wiring mechanism, the elastic wiring mechanism is composed of rings at both ends and a number of elastic pieces connected between the rings at both ends, the elastic pieces The middle part of the needle core is bent toward the central axis of the elastic wiring mechanism; the tail end of the needle core is inserted into the elastic wiring mechanism. The end of the needle core is connected to the elastic wiring mechanism. When the coaxial cable is inserted, the shrapnel will clamp the core wire of the coaxial cable without welding or riveting to fix it. It is easy to assemble and easy to use. At the same time, the coaxial cable and the needle core It remains coaxial after assembly and does not affect impedance matching.

Further, a rubber seat is fixed in the cavity, and the rubber seat is composed of a round tube and a cover plate semi-closed at the top of the round tube, and grooves are provided on the top of the round tube and the side of the cover plate; The round tube is fixed in the main body, the curved part of the needle core is erected on the rubber seat, and the needle core is stuck in the groove. The above-mentioned rubber seat can fix the needle core and prevent the needle core from loosening and shrinking after being stressed.

Further, the tail pipe is integrally connected by an externally threaded pipe and a connection pipe whose diameter is smaller than that of the externally threaded pipe, and the externally threaded pipe is fixedly connected to the main body; A ring-shaped step, the ring-shaped step is covered with a crimping sleeve, and the tail end of the crimping sleeve is composed of several elastic sheets at intervals, and the elastic sheets are suspended in the air; the inside of the locking sleeve is a gradual Constricted bell mouth structure, the diameter of the bell mouth gradually decreases from the direction of the tail pipe to the direction away from the tail pipe. When the locking sleeve is screwed into the external threaded pipe of the tail pipe, the elastic sheet of the crimping sleeve will contact the inner wall of the locking sleeve, and will bend and gather in the direction of the central axis under the action of the inner wall of the locking sleeve, so that the coaxial The cable is clamped to prevent the coaxial cable from coming out.

Further, the inside of the plug is provided with a stepped surface, the plug is sleeved on the main body, the top surface of the outer edge of the first insulating rubber core is against the stepped surface of the plug, and the bottom surface of the outer edge of the first insulating rubber core is in contact with the main body The head ends of the plugs and the main body are used to fix the first insulating rubber core. When assembling the 90°IEC connector, first pass the needle core through the first insulating rubber core and fix it with the first insulating rubber core (specifically, the first insulating rubber core can be plasticized on the needle core), and then put the first insulating rubber core The bottom surface of the outer edge of the rubber core is against the head end of the main body, and then the head end of the main body is inserted into the tail end of the plug, so that the top surface of the outer edge of the first insulating rubber core is against the step surface of the plug, and finally the plug is connected to the plug. The main body is riveted, so that the insulating rubber core is fixed in the 90°IEC joint by the plug and the main body.

Further, the contact core is a male contact core or a female contact core, so that the 90° IEC connector is a male contact or a female contact.

When the needle core adopts a female needle core, an elastic compression mechanism is provided in the plug of the 90°IEC connector, and the elastic compression mechanism is composed of rings at both ends and elastic joints connected between the rings at both ends. The compression section is formed, and the middle part of the elastic compression section bends toward the central axis of the elastic compression mechanism. In this way, when the IEC male connector is connected to the female connector, the above-mentioned elastic compression section can be kept pressed tightly with the male connector core, and the contact area with the male connector core is increased, which is conducive to reliable electrical connection and good signal Shielding effect.

The signal line of the present utility model includes the above-mentioned 90°IEC connector and coaxial cable, and one or both ends of the coaxial cable are connected with the 90°IEC connector; The connection is fixed, the tail end of the tail pipe is inserted between the braided layer and the aluminum foil layer of the coaxial cable, and the coaxial cable is compressed and fixed between the tail pipe and the lock sleeve by a locking sleeve. The tailpipe of the above-mentioned 90° IEC connector is electrically connected to the shielding layer of the coaxial cable (ie, the braided layer and the aluminum foil layer), which can avoid signal leakage and improve the signal shielding effect. In addition, because the tail pipe and the cable are tightly assembled, the impedance of the tail pipe is equal to the impedance of the coaxial cable, that is, 75 ohms, and the impedance of the plug part and the main part of the 90° IEC connector is also 75 ohms after equalization, so This makes the impedance of the entire signal line 75 ohms, which greatly improves the signal transmission performance.

The 90°IEC joint of the utility model perfectly solves the problem that the traditional IEC joint does not meet the 75 ohm impedance, and provides a good shielding effect for the signal line, and at the same time solves the problems of large space occupation and inconvenient layout, and has a good commercial value.

Description of drawings

Figure 1 is a structural sectional view of a traditional IEC connector (male).

Fig. 2 is a structural sectional view of a traditional IEC connector (female).

Fig. 3 is a structural sectional view of the 90° IEC joint (male) of the present invention.

Fig. 4 is a structural cross-sectional view of the 90° IEC joint (female head) of the present invention.

Fig. 5 is a schematic diagram of wire stripping of a coaxial cable.

Fig. 6 is a structural cross-sectional view of the signal line of the present invention (that is, after the 90° IEC connector is assembled with the coaxial cable).

Fig. 7 is a schematic structural view of the medium-voltage line sleeve of the present invention.

Fig. 8 is a schematic diagram of the cooperation structure of the tailpipe and the crimping sleeve in the utility model.

Fig. 9 is an enlarged schematic diagram of the structure at the tailpipe in the present invention.

Fig. 10 is a schematic structural view of the rubber seat of the present invention.

Fig. 11 is a three-dimensional structural schematic diagram of the 90° IEC connector (male) of the present invention.

Fig. 12 is a three-dimensional structural schematic diagram of a 90° IEC joint (female head) of the present invention.

Drawings indicate: 1. Plug; 2. Main body; 3. Tail pipe; 31. External thread pipe; 32. Wiring pipe; 4. Locking sleeve; 5. Needle core; 6. First insulating rubber core; 7. Second Two insulating rubber cores; 8, rubber seat; 81, round tube; 82, cover plate; 83, groove; 9, elastic wiring mechanism; 10, crimping sleeve; 101, elastic sheet; 11, cavity; Pressing mechanism; 13, coaxial cable; 131, inner conductor; 132, braiding layer; 133, aluminum foil layer.

detailed description

Below with reference to the accompanying drawings, through the description of the implementation examples, the specific embodiments of the present utility model, such as the shape, structure, mutual position and connection relationship between each part, the role and working principle of each part, etc. Further details.

Example 1:

As shown in the figure, the 90° IEC connector of this embodiment consists of a plug 1, a main body 2, a tail pipe 3, a locking sleeve 4, a needle core 5, a first insulating rubber core 6, a second insulating rubber core 7, and a rubber seat 8 , an elastic wiring mechanism 9, the plug 1, the main body 2, the needle core 5, the tail pipe 3, the elastic wiring mechanism 9, and the locking sleeve 4 are all made of metal; the first insulating rubber core 6, the second insulating The rubber core 7 and the rubber seat 8 are made of colloid.

The plug 1 is riveted to the head end of the main body 2, the tail pipe 3 is riveted to the tail end of the main body 2 and is perpendicular to the axis of the main body 2, and the tail pipe 3 is integrally connected by an externally threaded pipe 31 and a wiring pipe 32 whose diameter is smaller than that of the externally threaded pipe 31 The externally threaded pipe 31 is fixedly connected to the main body 2; the junction of the externally threaded pipe 31 and the wiring pipe 32 is provided with an annular step, and the crimping sleeve 10 is set on the annular step, and the tail of the crimping sleeve 10 The end is composed of several elastic sheets 101 at intervals, and the elastic sheets 101 are suspended in the air; the locking sleeve 4 is installed on the externally threaded pipe 31 through thread fit, and the inside of the locking sleeve 4 is a tapered bell mouth structure with internal threads , the diameter of the bell mouth gradually decreases from the direction of the tail pipe 3 to the direction away from the tail pipe 3 .

The second insulating rubber core 7 is fixed in the tail pipe 3, the needle core 5 is an L-shaped structure provided with a bent portion, and the head end of the needle core 5 passes through the first insulating rubber core 6 and is connected with the first insulating rubber core 6. The core 6 is fixedly connected; the tail end of the needle core 5 is fixedly connected with the second insulating rubber core 7 through the elastic wiring mechanism 9; the elastic wiring mechanism 9 is composed of rings at both ends and a number of shrapnels connected between the rings at both ends , the middle part of the elastic piece is bent toward the central axis of the elastic wiring mechanism 9; the tail end of the needle core 5 is inserted into the elastic wiring mechanism 9.

The interior of the main body 2 and the interior of the tail pipe 3 are hollow, and the tail end face of the first insulating rubber core 6, the head end face of the second insulating rubber core 7, the inner side wall of the main body 2 and the inner side wall of the tail pipe 3 constitute a The cavity 11 uses air as an insulating medium, and the middle and tail ends of the needle core 5 are exposed in the cavity 11 .

There is a stepped surface inside the plug 1, the top surface of the outer edge of the first insulating rubber core 6 is against the stepped surface of the plug 1, and the bottom surface of the outer edge of the first insulating rubber core 6 is against the head end of the main body 2, thereby using the plug 1. The main body 2 fixes the first insulating rubber core 6 .

The rubber seat 8 is composed of a round tube 81 and a cover plate 82 semi-closed on the top of the round tube 81. The top of the round tube 81 and the side of the cover plate 82 are provided with a groove 83; the round tube 81 is fixed on the main body 2 Inside, the curved part of the needle core 5 is erected on the rubber base 8, and the needle core 5 is stuck in the groove 83.

The contact core 5 is a male contact core 5 or a female contact core 5, so that the 90° IEC connector is a male contact or a female contact. When the needle core 5 adopts the female needle core 5, the plug 1 of the 90° IEC connector is provided with an elastic compression mechanism 12, and the elastic compression mechanism 12 is composed of rings at both ends and rings at both ends. The elastic compression section between the rings is formed, and the middle part of the elastic compression section bends toward the central axis of the elastic compression mechanism 12 .

The 90° IEC joint of this embodiment adopts the needle core 5 which is integrally processed and bent into an L-shaped structure, and makes the plug 1 and the tail pipe 3 in a vertical state. When the plug 1 is inserted into the socket buried in the wall, the tail pipe 3 will be parallel to the wall, so that the signal line will be parallel and close to the wall, which reduces the occupied space and is more beautiful. More importantly, the above-mentioned cavity 11 will increase the impedance of the connector, so that the impedance of the connector is about 75 ohms, matching with the system, and improving the signal transmission performance at the connector.

The signal line of the present utility model comprises the above-mentioned 90°IEC joint and coaxial cable 13, and one or both ends of the coaxial cable 13 are connected with the 90°IEC joint; The needle core 5 of the connector is connected and fixed, and the tail end of the tail pipe 3 is inserted between the braided layer 132 and the aluminum foil layer 133 of the coaxial cable 13, and the coaxial cable 13 is compressed and fixed on the tail pipe by using the locking sleeve 4 3 and the locking sleeve 4. The tailpipe 3 of the above-mentioned 90° IEC connector is electrically connected to the shielding layer of the coaxial cable 13 (ie, the braided layer 132 and the aluminum foil layer 133 ), which can avoid signal leakage and improve the signal shielding effect. In addition, because the tail pipe 3 is closely assembled with the cable, the impedance of the tail pipe 3 is equal to the impedance of the coaxial cable 13, that is, 75 ohms, and the impedance of the plug 1 part and the main body 2 part of the 90° IEC connector is equalized. It is 75 ohms, so that the impedance of the entire signal line is 75 ohms, which greatly improves the signal transmission performance.

Claims (8)

1. A 90 ° IEC joint is characterized in that it is composed of a plug, a main body, a tail pipe, a locking sleeve, a needle core, a first insulating rubber core, and a second insulating rubber core. The plug, the main body, the needle core, and the tail The pipes are all made of metal; the plug is installed at the head end of the main body, the tail pipe is installed at the tail end of the main body and is perpendicular to the axis of the main body, and the locking sleeve is mounted on the tail pipe through thread fit; the The first insulating rubber core is fixed in the plug or the main body, the second insulating rubber core is fixed in the tail pipe, the needle core is an L-shaped structure with a bent part, and the head end of the needle core passes through the first insulating rubber core And fixedly connected with the first insulating rubber core; the tail end of the needle core is fixed by the second insulating rubber core; the inside of the main body and the inside of the tail pipe are hollow, and the tail end face of the first insulating rubber core, the second insulating rubber core The head end surface of the rubber core, the inner side wall of the main body and the inner side wall of the tail pipe form a cavity with air as the insulating medium, and the middle part and the tail end of the needle core are exposed in the cavity. 2. The 90° IEC joint according to claim 1, characterized in that the tail end of the needle core is fixedly connected to the second insulating rubber core through an elastic wiring mechanism, and the elastic wiring mechanism is connected to the rings at both ends. It is composed of several elastic pieces between the rings at both ends, and the middle part of the elastic pieces is bent toward the central axis of the elastic wiring mechanism; the tail end of the needle core is inserted into the elastic wiring mechanism. 3. The 90° IEC joint according to claim 1, characterized in that a rubber seat is fixed in the cavity, the rubber seat is composed of a round tube and a cover plate semi-closed at the top of the round tube, the round tube The top of the tube and the side of the cover plate are provided with grooves; the round tube is fixed in the main body, the curved part of the needle core is erected on the rubber seat, and the needle core is stuck in the groove. 4. The 90° IEC joint according to claim 1, 2 or 3, characterized in that the tail pipe is integrally connected by an externally threaded pipe and a junction pipe whose diameter is smaller than that of the externally threaded pipe, and the externally threaded pipe is connected with the The main body is fixedly connected; an annular step is provided at the junction of the external threaded pipe and the wiring pipe, and a crimping sleeve is set on the annular step, and the tail end of the crimping sleeve is composed of several elastic pieces at intervals. The elastic piece is suspended in the air; the inside of the locking sleeve is a tapered bell mouth structure with internal threads, and the diameter of the bell mouth gradually decreases from the direction of the tail pipe to the direction away from the tail pipe. 5. The 90° IEC joint according to claim 1, 2 or 3, wherein a stepped surface is provided inside the plug, the plug is set on the main body, and the top surface of the outer edge of the first insulating rubber core is in contact with the plug The stepped surface of the first insulating rubber core is against the bottom surface of the outer edge of the first insulating rubber core and the head end of the main body, so that the first insulating rubber core is fixed by the plug and the main body. 6. The 90° IEC joint according to claim 1, 2 or 3, characterized in that the contact core is a male contact core or a female contact core. 7. The 90°IEC joint according to claim 6, wherein when the contact core adopts a female contact core, an elastic compression mechanism is provided in the plug of the 90°IEC joint, and the elastic compression mechanism The mechanism is composed of circular rings at two ends and an elastic pressing section connected between the two rings. The middle part of the elastic pressing section bends toward the central axis of the elastic pressing mechanism. 8. A signal line that adopts the 90° IEC connector of claim 1, comprising the 90° IEC connector and a coaxial cable, one or both ends of the coaxial cable are connected with the 90° IEC connector; it is characterized in that the The inner conductor of the coaxial cable is connected and fixed with the needle core of the 90°IEC connector, and the tail end of the tail pipe is inserted between the braided layer and the aluminum foil layer of the coaxial cable, and the coaxial cable is compressed and fixed by a locking sleeve Between tailpipe and locking sleeve.